Display device

Abstract

To provide a display device that has excellent portability and excels in listing capability, or an electronic apparatus.SOLUTION: There is provided a display device including two display panels overlapped each other, an area of a portion where the two display panels are overlapped each other being variable. Wider is the area where the two display panels are overlapped, smaller is the display device. The first display panel includes a first region for performing display, and the second display panel includes a second region for performing display and a third region adjacent to the second region and transmitting visible light. Displaying with a seamless wide display region can be performed by overlapping the third region on a surface side of the first region for display.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] One aspect of the present invention relates to a display device and an electronic device.

[0002] Note that one aspect of the present invention is not limited to the above technical field. As for the technical field of one aspect of the present invention, semiconductor devices, display devices, light-emitting devices, power storage devices, storage devices, electronic devices, lighting devices, input devices (for example, touch sensors, etc.), input / output devices (for example, touch panels, etc.), and their driving methods, or their manufacturing methods can be cited as an example.

Background Art

[0003] In recent years, light-emitting devices and display devices are expected to be applied to various uses, and diversification is required.

[0004] For example, in the case of household television devices (also referred to as TVs or television receivers), digital signage, PID (Public Information Display), etc., an increase in the size of the display device is required. The larger the display area of the display device, the more information can be provided at once. Also, the larger the display area, the easier it is to catch people's eyes. For example, it is expected to enhance the advertising effect.

[0005] Also, in the case of portable device applications, an increase in the size of the display device is required. By widening the display area, it is considered to increase the amount of information displayed at once and improve the listability. On the other hand, in portable device applications, miniaturization of the display device is also required to enhance portability.

[0006] Electroluminescence (hereinafter referred to as EL) Light-emitting elements (also called EL elements) that utilize the phenomenon of light emitting diodes (LEDs) are easy to make thin and lightweight. It has features such as high speed response to signals and the ability to be driven using a low voltage DC power supply. , and its application to display devices is being considered.

[0007] For example, Patent Document 1 discloses a flexible light-emitting device to which an organic EL element is applied. There are. [Prior art documents] [Patent documents]

[0008] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-197522 Summary of the Invention [Problem to be solved by the invention]

[0009] An object of one embodiment of the present invention is to provide a highly portable display device or electronic device. Another embodiment of the present invention is to provide a display device or electronic device with excellent viewability. Another object of the present invention is to provide a display device capable of displaying images along a curved surface. One of the objectives of the present invention is to provide a device or electronic device.

[0010] Another object of one embodiment of the present invention is to provide a display device or electronic device that is less likely to be damaged. Another embodiment of the present invention is to provide a highly reliable display device or electronic device. Another object of one embodiment of the present invention is to provide a display device or electronic device with low power consumption. Another object of one embodiment of the present invention is to provide a novel light-emitting device, a novel display device, One object is to provide a display device, an input / output device, an electronic device, a lighting device, or the like.

[0011] Or, one aspect of the present invention is to provide a lightweight display device or the like. Or One aspect of the present invention is to provide a display device or the like having a small thickness. Or, One aspect of the present invention is to provide a display device or the like having flexibility. Or One aspect of the present invention is to provide a light-emitting device or a lighting device having a seamless wide light-emitting area, or a display device, an input / output device, or an electronic device having a seamless wide display area. One object is to do so.

[0012] Note that the description of these problems does not prevent the existence of other problems. Note that one aspect of the present invention does not need to solve all of these problems. Note that it is possible to extract other problems from the descriptions of the specification, drawings, and claims.

Means for Solving the Problems

[0013] One aspect of the present invention is a display device having a first display panel and a second display panel. The [[ID=३१]]first display panel has a first region, and the first region has a function of performing display. The second display panel has a second region and a third region. The second region has a function of performing display. The third region is adjacent to the second region and has a function of transmitting visible light. Further, the display device has a first portion, and in the first portion, at least the third region of the first display panel and the second display panel overlap each other, and the area of the first portion is variable.

[0014] In the display device having the above configuration, the first display panel and the second display panel have at least It is preferable that at least a part of them can overlap with each other. For example, when one display panel is rectangular it is preferable that they can overlap with each other in a state where three or more sides of the ends are aligned.

[0015] The display device having each of the above configurations preferably has a function of fixing the positions of the first display panel and the second display panel in a first state. In the first state, the surface for displaying in the first region (also referred to as the display surface) overlaps with the third region. In the first state, the surface for performing the display in the first region (also referred to as the display surface) overlaps with the third region. (Also referred to as the display surface) overlaps with the third region.

[0016] Alternatively, one aspect of the present invention is a display device having a first display panel, a second display panel, a first support panel, a second support panel, and a hinge portion. The first display panel has a first region, the first region has a function of performing display, the second display panel has a second region and a third region, the second region has a function of performing display, the third region is adjacent to the second region and has a function of transmitting visible light. The first support panel supports the first display panel, and the second support panel supports the second display panel. The hinge portion connects the first support panel and the second support panel so that the relative positional relationship between the first support panel and the second support panel becomes variable. Further, the display device has a first portion, and in the first portion at least the third region of the first display panel and the second display panel overlap each other, and the area of the first portion is variable. That is, it can be said that the hinge portion connects the first support panel and the second support panel so that the area of the first portion becomes variable. at least the third region of the first display panel and the second display panel overlap each other, and the area of the first portion is variable. That is, it can be said that the hinge portion connects the first support panel and the second support panel so that the area of the first portion becomes variable. at least the third region of the first display panel and the second display panel overlap each other, and the area of the first portion is variable. That is, it can be said that the hinge portion connects the first support panel and the second support panel so that the area of the first portion becomes variable. 1 at least the third region of the first display panel and the second display panel overlap each other, and the area of the first portion is variable. That is, it can be said that the hinge portion connects the first support panel and the second support panel so that the area of the first portion becomes variable. In other words, it can be said that the hinge portion connects the first support panel and the second support panel so that the area of the first portion becomes variable.

[0017] In the display device having the above configuration, the hinge portion has a first unit and a second unit, and the first unit and the second unit each have a first axis, a second axis, and an arm. The arm is rotatably connected about a first axis, and the arm is rotatable about a second axis and is preferably rotatably connected.

[0018] Alternatively, in the display device having the above configuration, the hinge portion includes a first unit and a second unit and the first unit and the second unit each have a first axis, a second axis, a third axis, a first arm, and a second arm. The first arm is rotatably connected about the first axis and the first arm is rotatably connected about the third axis. The second arm is rotatably connected about the second axis, and the second arm is preferably rotatably connected about the third axis.

[0019] In the display device having each of the above configurations, the angle formed by the pixels included in the first region and the long side of the third region is preferably greater than 0° and less than 50°. Alternatively, in the display device having each of the above configurations, the overlapping region between the pixels included in the first region and the third region preferably has an angle greater than 0° and less than 50°.

[0020] Alternatively, each of the display devices having the above configurations may have a module in which a connector such as an FPC (Flexible Printed Circuit) or a TCP (Tape Carrier Package) is attached to the first display panel and the second display panel, or a module in which an IC is mounted by a method such as COG (Chip On Glass) or COF (Chip On Film).

[0021] Alternatively, in one aspect of the present invention, any of the above configurations is not a display device, but a light-emitting device or ​​​​​​It may also be applied to an input / output device (such as a touch panel).

[0022] Another embodiment of the present invention is an electronic device including a first display panel, a housing, and a communication unit. A first display panel is located inside the housing, and the first display panel has a first area and a second area, the first area having a function of displaying, and the second area having a function of displaying the first area. The housing has a mechanism for exposing the second area and is adjacent to the first area and has a function of transmitting visible light. The second area of the electronic device overlaps with a part of a second display panel of another electronic device. By communicating with other electronic devices using the communication means, the first display panel and the second display panel The display panel has the function of being used as a single display area.

[0023] Another embodiment of the present invention is an electronic device including a first display panel, a housing, and a communication unit. A first display panel is located inside the housing, and the first display panel has a first area The first area has a display function, and the housing can expose the first area. The electronic device has a mechanism for connecting the first area to a second display panel of another electronic device. By overlapping with the part that transmits visible light and communicating with other electronic devices using communication means, The first display panel and the second display panel have the function of being used as one display area.

[0024] Another embodiment of the present invention is an electronic device including a first display panel, a housing, and a communication unit. A first display panel is located inside the housing, and the first display panel has a first area and a second area, the first area having a function of displaying, and the second area having a function of displaying the first area. The housing is adjacent to the first area and has a function of transmitting visible light, and the housing separates the first area and the second area. and a mechanism that can be exposed from different side edges of the display surface of the first display panel The electronic device has a first area that overlaps with a part of a second display panel of another electronic device and, by communicating with the other electronic device using communication means, has a function of using the first display panel and the second display panel as one display area. The electronic device has a second area that overlaps with a part of a third display panel of another electronic device that transmits visible light and, by communicating with the other electronic device using communication means, has a function of using the first display panel and the third display panel as one display area. In the electronic device having each of the above configurations, it is preferable that at least one of the first area and the second area can be exposed by removing or rotating a part of the housing. Or, one aspect of the present invention is an electronic device having a first display panel, a housing, and communication means. The first display panel is located inside the housing, and the first display panel has a first area and a second area. The first area has a function of performing a display, and the second area is adjacent to the first area and has a function of transmitting visible light. The housing overlaps with the second area and has a part that transmits visible light. The electronic device has a function of using the first display panel and the second display panel as one display area by the part of the housing that transmits visible light overlapping with a part of the second display panel of another electronic device and communicating with the other electronic device using communication means. In the electronic device having each of the above configurations, an antenna, a battery, a speaker, a microphone, or an operation button

[0025] In the electronic device having each of the above configurations, it is preferable that at least one of the first area and the second area can be exposed by removing or rotating a part of the housing.

[0026] Or, one aspect of the present invention is an electronic device having a first display panel, a housing, and communication means. The first display panel is located inside the housing, and the first display panel has a first area and a second area. The first area has a function of performing a display, and the second area is adjacent to the first area and has a function of transmitting visible light. The housing overlaps with the second area and has a part that transmits visible light. The electronic device has a function of using the first display panel and the second display panel as one display area by the part of the housing that transmits visible light overlapping with a part of the second display panel of another electronic device and communicating with the other electronic device using communication means. In the electronic device having each of the above configurations, an antenna, a battery, a speaker, a microphone, or an operation button In the electronic device having each of the above configurations, an antenna, a battery, a speaker, a microphone, or an operation button In the electronic device having each of the above configurations, an antenna, a battery, a speaker, a microphone, or an operation button In the electronic device having each of the above configurations, an antenna, a battery, a speaker, a microphone, or an operation button

[0027] In the electronic device having each of the above configurations, an antenna, a battery, a speaker, a microphone, or an operation button ​​​​It is preferable that the compound has at least one of the above.

[0028] In the display device and electronic device having each of the above configurations, the first display panel is flexible. In the display device having the above-described configuration, the second display panel is preferably flexible. It is preferable that

[0029] In the display device and electronic device having the above configurations, the first display panel may have a curved surface. In the display device having each of the above configurations, the second display panel preferably has a curved surface. It is preferable that: [Effects of the Invention]

[0030] According to one embodiment of the present invention, a highly portable display device or electronic device can be provided. In one embodiment, a display device or an electronic device with excellent visibility can be provided. In one aspect, a display device or electronic device capable of displaying along a curved surface can be provided.

[0031] Alternatively, in one embodiment of the present invention, a display device or electronic device that is less likely to be damaged can be provided. Alternatively, in one embodiment of the present invention, a highly reliable display device or electronic device can be provided. Alternatively, in one embodiment of the present invention, a display device or electronic device with low power consumption is provided. Alternatively, in one embodiment of the present invention, a novel light-emitting device, a display device, an input / output device, An electronic device, a lighting device, or the like can be provided.

[0032] Alternatively, in one embodiment of the present invention, a lightweight display device or the like can be provided. In one embodiment of the present invention, a thin display device or the like can be provided. In this way, a display device having flexibility or the like can be provided. Or, in one aspect of the present invention it is possible to provide a light-emitting device or a lighting device having a seamless wide light-emitting region, or a display device, an input / output device, or an electronic device having a seamless wide display region.

[0033] Note that the description of these effects does not prevent the existence of other effects. Note that one aspect of the present invention does not necessarily have to have all of these effects. Note that it is possible to extract other effects from the descriptions in the specification, drawings, and claims .

Brief Description of the Drawings

[0034]

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Embodiments for Carrying Out the Invention

[0035] The embodiments will be described in detail with reference to the drawings. However, the present invention is not limited to the following description, and those skilled in the art can easily understand that the form and details can be variously changed without departing from the spirit and scope of the present invention. Therefore, the present invention should not be construed as being limited to the description of the embodiments shown below. and various changes can be made to its form and details without departing from the spirit and scope of the present invention. It is easily understood by those skilled in the art. Therefore, the present invention should not be construed as being limited to the description of the embodiments shown below. and is not to be construed as being limited to the description of the embodiments shown below.

[0036] In the configuration of the invention described below, the same parts or parts having similar functions are designated by the same reference numerals. The same reference numerals are used in common among different drawings, and the repeated explanations thereof will be omitted. When referring to a function, the hatch pattern may be the same and no particular symbol may be added.

[0037] In addition, the position, size, range, etc. of each component shown in the drawings are not necessarily the same as in reality for ease of understanding. Therefore, the disclosed invention may not necessarily represent the position, size, range, etc. Furthermore, the present invention is not limited to the position, size, range, etc. disclosed in the drawings.

[0038] The words "film" and "layer" may be used interchangeably depending on the situation. For example, the term "conductive layer" can be used interchangeably with the term "conductive film." Alternatively, for example, the term "insulating film" can be changed to " The term "insulating layer" may be changed to "insulating layer."

[0039] (Embodiment 1) In this embodiment, a display device and an electronic device according to one embodiment of the present invention will be described with reference to FIGS. and explain.

[0040] By arranging a plurality of display panels in one or more directions (for example, in a line or in a matrix), A display device having a large display area can be manufactured.

[0041] When manufacturing a large display device using multiple display panels, the size of one display panel is Therefore, it is not necessary to enlarge the manufacturing equipment for producing the display panel. In addition, it is possible to use small and medium-sized display panel manufacturing equipment. It is possible, and since there is no need to use a new manufacturing apparatus for increasing the size of the display device, the manufacturing cost can be reduced. Also, it is possible to suppress a decrease in yield associated with increasing the size of the display panel. When the size of the display panel is the same, compared with a display device having one display panel, a display device having a plurality of display panels has an effect such as a wider display area and a larger amount of information that can be displayed at one time.

[0042] However, each display panel has a non-display area so as to surround the display area. Therefore, for example, when combining output images of a plurality of display panels to display one image, the one image is visually recognized as being separated for the user of the display device. By narrowing the non-display area of each display panel (using a display panel with a narrow bezel), it is possible to suppress the display of each display panel from being seen as separated, but it is difficult to completely eliminate the non-display area of the display panel.

[0043] Also, when the area of the non-display area of the display panel is small, the distance between the end of the display panel and the elements in the display panel becomes short, and the elements may be easily deteriorated by impurities entering from the outside of the display panel. Therefore, in the display device according to one aspect of the present invention, a plurality of display panels are arranged in a stacked manner. Among the two stacked display panels, at least the display panel located on the display surface side (upper side) has a region that transmits visible light adjacent to the display region. In one aspect of the present invention, the display region of the display panel arranged on the lower side overlaps with the region that transmits visible light of the display panel arranged on the upper side.

[0044]

[0045]

[0046] Thus, in the display device according to one aspect of the present invention, a plurality of display panels are arranged in a stacked manner. Of the two stacked display panels, at least the display panel located on the display surface side (upper side) has a region that transmits visible light adjacent to the display region. In one aspect of the present invention, the display region of the display panel arranged on the lower side overlaps with the region that transmits visible light of the display panel arranged on the upper side. ​​​​​​​​​​​Therefore, the non-display area between the display areas of the two overlapping display panels can be reduced or even eliminated. This makes it difficult for the user to recognize the seam of the display panel, and a large-sized display device can be realized. Moreover, at least a part of the non-display area of the display panel located on the upper side is a region that transmits visible light and can overlap with the display area of the display panel located on the lower side. Also, at least a part of the non-display area of the display panel located on the lower side can overlap with the display area of the display panel located on the upper side or a region that blocks visible light. For these parts, since they do not affect the narrow bezelization (reduction of the area other than the display area) of the display device, it is not necessary to reduce the area. When the non-display area of the display panel is large, the distance between the end of the display panel and the elements inside the display panel becomes long, and it is possible to suppress the deterioration of the elements caused by impurities invading from the outside of the display panel. For example, when an organic EL element is used as the display element, the longer the distance between the end of the display panel and the organic EL element, the less likely (or the more difficult to reach) it is for impurities such as moisture or oxygen to invade the organic EL element from the outside of the display panel. In the display device according to one aspect of the present invention, since the area of the non-display area of the display panel can be sufficiently ensured, a highly reliable large-sized display device can be realized even when a display panel using an organic EL element or the like is applied.

[0047] On the other hand, a large-sized display device may be difficult to carry and may require a large storage space. In addition, depending on the application, the appropriate size of the display area changes, so the display area of one display device Moreover, at least a part of the non-display area of the display panel located on the upper side is a region that transmits visible light and can overlap with the display area of the display panel located on the lower side. Also, at least a part of the non-display area of the display panel located on the lower side can overlap with the display area of the display panel located on the upper side or a region that blocks visible light. For these parts, since they do not affect the narrow bezelization (reduction of the area other than the display area) of the display device, it is not necessary to reduce the area. When the non-display area of the display panel is large, the distance between the end of the display panel and the elements inside the display panel becomes long, and it is possible to suppress the deterioration of the elements caused by impurities invading from the outside of the display panel. For example, when an organic EL element is used as the display element, the longer the distance between the end of the display panel and the organic EL element, the less likely (or the more difficult to reach) it is for impurities such as moisture or oxygen to invade the organic EL element from the outside of the display panel. In the display device according to one aspect of the present invention, since the area of the non-display area of the display panel can be sufficiently ensured, a highly reliable large-sized display device can be realized even when a display panel using an organic EL element or the like is applied. On the other hand, a large-sized display device may be difficult to carry and may require a large storage space. [[ID=##]]

[0048] When the non-display area of the display panel is large, the distance between the end of the display panel and the elements inside the display panel becomes long, and it is possible to suppress the deterioration of the elements caused by impurities invading from the outside of the display panel. For example, when an organic EL element is used as the display element, the longer the distance between the end of the display panel and the organic EL element, the less likely (or the more difficult to reach) it is for impurities such as moisture or oxygen to invade the organic EL element from the outside of the display panel. In the display device according to one aspect of the present invention, since the area of the non-display area of the display panel can be sufficiently ensured, a highly reliable large-sized display device can be realized even when a display panel using an organic EL element or the like is applied. Moreover, at least a part of the non-display area of the display panel located on the upper side is a region that transmits visible light and can overlap with the display area of the display panel located on the lower side. Also, at least a part of the non-display area of the display panel located on the lower side can overlap with the display area of the display panel located on the upper side or a region that blocks visible light. For these parts, since they do not affect the narrow bezelization (reduction of the area other than the display area) of the display device, it is not necessary to reduce the area. When the non-display area of the display panel is large, the distance between the end of the display panel and the elements inside the display panel becomes long, and it is possible to suppress the deterioration of the elements caused by impurities invading from the outside of the display panel. For example, when an organic EL element is used as the display element, the longer the distance between the end of the display panel and the organic EL element, the less likely (or the more difficult to reach) it is for impurities such as moisture or oxygen to invade the organic EL element from the outside of the display panel. In the display device according to one aspect of the present invention, since the area of the non-display area of the display panel can be sufficiently ensured, a highly reliable large-sized display device can be realized even when a display panel using an organic EL element or the like is applied. On the other hand, a large-sized display device may be difficult to carry and may require a large storage space. In addition, depending on the application, the appropriate size of the display area changes, so the display area of one display device When the non-display area of the display panel is large, the distance between the end of the display panel and the elements inside the display panel becomes long, and it is possible to suppress the deterioration of the elements caused by impurities invading from the outside of the display panel. For example, when an organic EL element is used as the display element, the longer the distance between the end of the display panel and the organic EL element, the less likely (or the more difficult to reach) it is for impurities such as moisture or oxygen to invade the organic EL element from the outside of the display panel. In the display device according to one aspect of the present invention, since the area of the non-display area of the display panel can be sufficiently ensured, a highly reliable large-sized display device can be realized even when a display panel using an organic EL element or the like is applied. On the other hand, a large-sized display device may be difficult to carry and may require a large storage space.

[0049] On the other hand, a large-sized display device may be difficult to carry and may require a large storage space. In addition, depending on the application, the appropriate size of the display area changes, so the display area of one display device

[0050] In addition, depending on the application, the appropriate size of the display area changes, so the display area of one display device If the size is variable, the display device can be used in various situations.

[0051] Therefore, in the display device according to one aspect of the present invention, the area of the overlapping portion of the two display panels is made variable. The larger the overlapping area of the two display panels, the smaller the display device becomes, and the portability can be enhanced. Also, by making the area of the overlapping portion of the two display panels variable, the area of the display region of the display device can also be made variable. For example, the area of the display region of the display device is the largest when it is the sum of the areas of the display regions of the plurality of display panels the display device has, and the larger the area of the overlapping portion of two or more display panels, the smaller the area of the display region of the display device becomes.

[0052] <Example 1 of the display device> First, the display device according to one aspect of the present invention will be described.

[0053] Top views of the display device 10 are shown in FIGS. 1(A1), (B1), and (C1), respectively.

[0054] The display device 10 has a display panel 100a, a display panel 100b, and a display panel 100c. [[ID=3,2]]and has.

[0055] Side views of the display device 10 shown in FIG. 1(A1) are shown in FIGS. 1(A2) and (A3), respectively. FIG. 1(A2) is a side view of the long side of the display panel, and FIG. 1(A3) is a side view of the short side of the display panel. A side view of the display device 10 shown in FIG. 1(B1) is shown in FIG. 1(B2). A side view of the display device 10 shown in FIG. 1(C1) is shown in FIG. 1(C2). FIGS. 1(B2) and FIG. 1(C2) are side views of the short side of the display panel, respectively.

[0056] The display device 10 shown in FIGS. 1 (C1) and (C2) has a display panel 100b on the display panel 100a and a display panel 100c on the display panel 100b. 00b and has a display panel 100c on the display panel 100b.

[0057] The display device 10 can change from one of the states of FIG. 1 (A1) and FIG. 1 (B1) to the other. Also, the display device 10 can change from one of the states of FIG. 1 (B1) and FIG. 1 (C1) to the other. That is, the display device 10 can change from one of the states of FIG. 1 (A1) and FIG. 1 ( C1) to the other. C1) to the other.

[0058] For example, when using the display device 10, as shown by the thick line in FIG. 1 (A1), display can be performed using a wide display area 11. Also, when the display device 10 is not in use, as shown in FIGS. 1 (B1) and (C1), by making the area where two or more display panels overlap wider, the display device 10 can be miniaturized. Thereby, the portability of the display device 10 can be increased. (B1) and (C1), the display device 10 can be miniaturized. Thereby, the portability of the display device A can be increased. Also, the storage space of the display device 10 can be reduced. Thereby, the portability of the display device 10 can be increased. Also, the storage space of the display device 10 can be reduced. Thereby, the portability of the display device 10 can be increased. Also, the storage space of the display device 10 can be reduced.

[0059] Further, the display device 10 is a device that can freely change the area of the display area 11. As shown in FIGS. 1 (A1) and (B1), not only can display be performed using a plurality of display panels, but also, as shown in FIG. 1 (C1), display can also be performed using only the display panel located at the uppermost side. When displaying with the display device 10, one or more of the plurality of display panels may be used, and it is not necessary to use all the display panels. When displaying with the display device 10, one or more of the plurality of display panels may be used, and it is not necessary to use all the display panels.

[0060] Further, when displaying with the display device 10, it is not necessary to perform display over the entire display area of each display panel. There is none. For example, as shown in FIG. 1(B1), an area consisting of the entire display area 101c, a part of the display area 101b, and a part of the display area 101a may be used as the display area 11 of the display device. In one aspect of the present invention, it is preferable to obtain information such as the area of the overlapping region of the upper and lower display panels, or the coordinates of the boundary between the display area of the upper display panel and the display area of the lower display panel in the display area 11. For example, it is preferable to have a sensor on a support panel, a hinge part, a housing, etc. described later. Examples of the sensor include an optical sensor such as an infrared sensor, an ultrasonic sensor, a switch, etc. Thereby, the display device can determine the area to be used as the display area 11 among the display areas of each display panel. For example, one image can be displayed in the display area 11. Also, by making the portions not used as the display area 11 among the display areas of each display panel non-display, the power consumption of the display device 10 can be reduced. In one aspect of the present invention, the area of the region where the upper and lower display panels overlap, or information such as the coordinates of the boundary between the display area of the upper display panel and the display area of the lower display panel in the display area 11 is preferably obtained. For example, it is preferable to have a sensor on a support panel, a hinge part, a housing, etc. described later. Examples of the sensor include an optical sensor such as an infrared sensor, an ultrasonic sensor, a switch, etc. Thereby, the display device can determine the area to be used as the display area 11 among the display areas of each display panel. For example, one image can be displayed in the display area 11. Also, by making the portions not used as the display area 11 among the display areas of each display panel non-display, the power consumption of the display device 10 can be reduced. In one aspect of the present invention, the area of the region where the upper and lower display panels overlap, or information such as the coordinates of the boundary between the display area of the upper display panel and the display area of the lower display panel in the display area 11 is preferably obtained. For example, it is preferable to have a sensor on a support panel, a hinge part, a housing, etc. described later. Examples of the sensor include an optical sensor such as an infrared sensor, an ultrasonic sensor, a switch, etc. Thereby, the display device can determine the area to be used as the display area 11 among the display areas of each display panel. For example, one image can be displayed in the display area 11. Also, by making the portions not used as the display area 11 among the display areas of each display panel non-display, the power consumption of the display device 10 can be reduced. In one aspect of the present invention, the area of the region where the upper and lower display panels overlap, or information such as the coordinates of the boundary between the display area of the upper display panel and the display area of the lower display panel in the display area 11 is preferably obtained. For example, it is preferable to have a sensor on a support panel, a hinge part, a housing, etc. described later. Examples of the sensor include an optical sensor such as an infrared sensor, an ultrasonic sensor, a switch, etc. Thereby, the display device can determine the area to be used as the display area 11 among the display areas of each display panel. For example, one image can be displayed in the display area 11. Also, by making the portions not used as the display area 11 among the display areas of each display panel non-display, the power consumption of the display device 10 can be reduced. In one aspect of the present invention, the area of the region where the upper and lower display panels overlap, or information such as the coordinates of the boundary between the display area of the upper display panel and the display area of the lower display panel in the display area 11 is preferably obtained. For example, it is preferable to have a sensor on a support panel, a hinge part, a housing, etc. described later. Examples of the sensor include an optical sensor such as an infrared sensor, an ultrasonic sensor, a switch, etc. Thereby, the display device can determine the area to be used as the display area 11 among the display areas of each display panel. For example, one image can be displayed in the display area 11. Also, by making the portions not used as the display area 11 among the display areas of each display panel non-display, the power consumption of the display device 10 can be reduced. In one aspect of the present invention, the area of the region where the upper and lower display panels overlap, or

[0061] In this embodiment, a display device mainly having a smooth display panel is mainly described as an example. However, in one aspect of the present invention, the display panel may have a curved surface. One aspect of the present invention is a display device having a plurality of curved display panels, and the overlapping area of the two display panels is variable. For example, it has curved display panels 100a, display panel 100b, and display panel 100c, and a configuration that can change from one state such as in FIG. 1(A4) to the other state such as in FIG. 1(C3) can be cited. Note that the display device may have both a curved display panel and a smooth display panel. display panel.

[0062] Also, in one aspect of the present invention, the display panel may have flexibility. For example, FIG. 1 A configuration that can change from one of the states of (A3) to the state of FIG. 1 (A4) is also one aspect of the present invention. When bending the display panel, it may be bent so that the display surface faces inward (the display surface becomes a concave curved surface), or it may be bent so that the display surface faces outward (the display surface becomes a convex curved surface). In this embodiment, in order to distinguish between each display panel, between the components included in each display panel, or between the components related to each display panel, an alphabet is appended after the reference numeral for explanation. Unless otherwise specified, "a" is appended to the display panel or component disposed on the lowermost side (opposite to the display surface side), and for one or more display panels and their components disposed above it, "b", "c", etc. are appended in alphabetical order from the bottom side. Also, unless otherwise specified, even when explaining a configuration including a plurality of display panels, when explaining matters common to each display panel or component, the explanation is made omitting the alphabet. If the display panels constituting the display device can be removed independently of each other, for example, when a defect occurs in the display of one display panel, only the display panel with the display defect can be replaced with a new display panel. By continuing to use the other display panels, the display device can be used for a longer time and at a lower cost.

[0063]

[0064]

[0065] The display panel 100 each has a display area 101 and an area 102. The display panel 100 may have flexibility.

[0066] ​​​​​​​​​​​​​​The display area 101 includes a plurality of pixels arranged in a matrix and can display an image. One or more display elements are provided for each pixel. As the display element, for example, a light-emitting element such as an organic EL element, or a liquid crystal element or the like can be used.

[0067] The area 102 is an area other than the display area 101 and can also be called a non-display area. The area 102 has a region 110 that transmits visible light and a region 120 that blocks visible light. The region 110 that transmits visible light and the region 120 that blocks visible light are each adjacent to the display area 101. Among the area 102, the light transmittance of the portion other than the region 110 that transmits visible light and the region 120 that blocks visible light does not matter.

[0068] A material that transmits visible light is used for the region 110 that transmits visible light. For example, it may include a substrate, an adhesive layer, etc. that constitute the display panel. The higher the transmittance of visible light in the region 110 that transmits visible light, the more preferable it is because the light extraction efficiency of the display panel overlapping below can be increased. For example, in the region 110 that transmits visible light, the average value of the transmittance of light in the range of 450 nm or more and 700 nm or less is preferably 70% or more, more preferably 80% or more, and even more preferably 90% or more. Note that in the display device, the display panel (here, the display panel 100a) arranged on the lowermost side (opposite to the display surface) does not necessarily need to be provided with the region 110 that transmits visible light. For example, wiring for electrically connecting to the pixels (or display elements) included in the display area 101 is provided in the region 120 that blocks visible light. Also, in addition to such wiring, wiring for driving the pixels

[0069] is provided. ​​​​A driving circuit (scanning line driving circuit, signal line driving circuit, etc.) for the above may be provided. The visible light blocking area 120 includes terminals (also called connection terminals) for electrically connecting to an FPC or the like, and and wiring electrically connecting to the terminals.

[0070] In FIG. 1(A1), the display panel 100b has a part on the upper side ( Specifically, the display area 101 of the display panel 100a is The region 110b of the display panel 100b that transmits visible light is arranged to overlap the region 110a. In addition, the visible light of the display panel 100b is blocked on the display area 101a of the display panel 100a. The areas 120b of the display panel 100a are arranged so as not to overlap each other. 101b of the display panel 100b on the display area 101b of the display panel 100b. are arranged so as to overlap.

[0071] Similarly, in FIG. 1(A1), the display panel 100c has a portion thereof that is the same as the display panel 100b. Specifically, the display area of the display panel 100b is The area 110c of the display panel 100c that transmits visible light is arranged so as to overlap the area 101b. In addition, the display panel 100c is positioned on the display area 101b of the display panel 100b. The display panels 100b are arranged so that the areas 120c that block visible light do not overlap. The display area of the display panel 100c is displayed on the area 102b (including the area 120b that blocks visible light). 101c are arranged so that they overlap.

[0072] In FIG. 1(A1), a region 110b that transmits visible light overlaps the display region 101a. Therefore, even if the display panel 100b overlaps on the display surface of the display panel 100a, the user of the display device 10 can visually recognize the entire display in the display area 101a. Similarly, since the display area 101b also has an overlapping area 110c that transmits visible light, even if the display panel 100c overlaps on the display surface of the display panel 100b, the user of the display device 10 can visually recognize the entire display in the display area 10 1b.

[0073] Also, in FIG. 1(A1), above the area 102a (including the area 120a that blocks visible light), the display area 101b of the display panel 100b overlaps, so that the user does not visually recognize a non-display area between the display area 101 a and the display area 101b. Similarly, above the area 102 b (including the area 120b that blocks visible light), the display area 101 c of the display panel 100c overlaps, so that the user does not visually recognize a non-display area between the display area 101b and the display area 101c. Therefore, it is possible to set the area where the display areas 101a, 101b, and 101c are arranged without a gap as the display area 11 of the display device 10.

[0074] Also, in FIG. 1(B1), on the display area 101a of the display panel 100a, the area 110b that transmits visible light of the display panel 100b and the display area 101b are arranged to overlap. Similarly, in FIG. 1(B1), on the display area 101b of the display panel 100b, the area 110c that transmits visible light of the display panel 100c and the display area 101c are arranged to overlap. As a result, compared with FIG. 1(A1), in FIG. 1(B1), the display area 11 of the display device 1 0 becomes narrower, and miniaturization of the display device 10 can be achieved.

[0075] ​​​​​​In addition, in FIG. 1(C1), the display panel 100a, the display panel 100b, and the display panel 100c overlap in a state where all four sides are aligned. Each display panel has a display area 101 overlap with each other, and regions 110 that transmit visible light overlap with each other. In this way, when a plurality of display panels can overlap in a state where three or more sides of their ends are aligned, it is preferable because the display device can be miniaturized.

[0076] Note that the plurality of display panels do not have to be the same size. When the display device has display panels of a plurality of sizes, it is preferable that the ends of the other display panels overlap with the largest display panel because the display device can be particularly miniaturized.

[0077] Next, a mechanism for making variable the area of the portion where two display panels of the display device according to one aspect of the present invention overlap will be described.

[0078] The display device according to one aspect of the present invention has a support panel and a hinge portion. The support panel supports the display panel. The hinge portion connects the two support panels so that the relative positional relationship between the two support panels can be changed. Thereby, the area of the portion where the two display panels overlap can be made variable.

[0079] <Example 1 of hinge portion> FIGS. 2(A) and (B) and FIG. 3(A) show side views of the display device according to one aspect of the present invention. FIG. 3(B) shows a top view of the display device shown in FIG. 3(A).

[0080] The display device shown in FIG. 2(A) includes a display panel 100a, a display panel 100b, a display panel 1 00c, support panel 30a, support panel 30b, support panel 30c, first hinge portion 39 a, and a second hinge portion 39b.

[0081] In FIG. 2(A), the display device includes a support panel 30a, a support panel 30b on the support panel 30a, and a support panel 30c on the support panel 30b. The support panel 30a supports the display panel 100a, the support panel 30b supports the display panel 100b, and the support panel 30c supports the display panel 100c. For example, when the support panel 30b is moved and the display panel 100a comes into contact with the support panel 30b, the display panel 100a may be scratched. Therefore, it is preferable that the display panel 100 does not contact the support panel 30 located on the upper side.

[0082] The support panel is not particularly limited as long as it can support the display panel. For example, organic resin, metal, wood, etc. may be used. As the support panel, a plate-like member may be used to fix and support the display panel. For example, the display panel and the support panel may be adhered. Also, the display panel may be detachable from the support panel, such as by fixing the display panel and the support panel with a fastener or the like. Further, two plate-like members may be used as the support panel to sandwich the display panel. When imparting flexibility to the electronic device or the display device, a flexible member is also used for the support panel. When the display area of the display panel overlaps the support panel on the display surface side, it is preferable to use a material that transmits visible light for the support panel.

[0083] In the present embodiment, the support panel 30 is an area 102 that is a non-display area of the display panel 100. It is configured to be able to hold. Note that the support panel 30 and the display panel 100 may be in contact or may overlap via another member.

[0084] Each hinge part has two units parallel to each other. Specifically, the first hinge part 39 a has a unit 33a and a unit 33b, and the second hinge part 39b has a unit 3 3c and a unit 33d.

[0085] The hinge part may have at least one unit, but it is preferable that the hinge parts have two or more units parallel to each other because the movement of the support panel is restricted and the relative positional relationship between the two support panels becomes easier to control. Specifically, while maintaining the state where the display surfaces of the two display panels are parallel (facing the same direction), the relative position of one display panel with respect to the other display panel can be changed.

[0086] Each unit 33 has a first shaft 31, a second shaft 32, and an arm 35. The arm 35 has a bearing for receiving the first shaft 31 and a bearing for receiving the second shaft 32. The arm 35 is rotatably connected about the first shaft 31. Also, the arm 35 is rotatably connected about the second shaft 32 . There is no particular limitation on the material of the arm 35, and examples include plates (such as metal plates), springs, rubber, threads, wires (such as metal wires), etc. The arms of the display device do not necessarily have to be all of the same material. The display device may have a plurality of types of arms, such as some being metal plates and some being springs.

[0087] Since the display device has the hinge part 39b, the display device can be in the state of FIG. 2(A) and FIG. 2(B) It can be changed from one state to the other.

[0088] As shown by the dashed arrow in FIG. 2(B), the arm 35c rotates about the first axis 31c, and the arm 35d rotates about the first axis 31d, so that the overlapping area between the display panel 100b and the display panel 100c can be reduced. The arm 35c and the arm 35d are preferably each rotatable until the display panel 100b and the display panel 100c are in contact. When the two display panels are in contact and overlapped, the step and joint between the two display panels can be made less noticeable.

[0089] Here, in the display device of the comparative example shown in FIG. 2(C), like the portion surrounded by the two-dot chain line, during the rotation of the arm 35, the support panel 30b and the support panel 30c, or the display panel 100b and the display panel 100c etc. may come into contact and rub against each other. This is not preferable because it causes the display device to be damaged.

[0090] Therefore, as shown by the portion surrounded by the two-dot chain line in FIG. 2(B), when the display panel 100b and the display panel 100c are in contact, it is preferable that the side surface of the support panel 30c on the support panel 30b side does not contact the support panel 30b. Thereby, when changing the relative positional relationship between the two support panels 30, rubbing and damage of the support panel 30 and the display panel 100 can be suppressed, and the reliability of the display device can be improved.

[0091] Similarly, since the display device has the hinge portion 39a, the display device can be changed from one state of FIG. 2(B) and FIG. 3(A) to the other.

[0092] The arm 35a rotates about the first axis 31a, and the arm 35b rotates about the first axis 31b so that the overlapping area between the display panel 100a and the display panel 100b can be reduced This is possible. The arms 35a and 35b are preferably each rotatable until the display panel 100a and the display panel 100b are in contact with each other.

[0093] In FIG. 3(B), the support panel 30 covers a part of the display panel 100, suppressing the user from visually recognizing the area 102 which is the non-display area of the display panel 100 This is achieved.

[0094] <Example 2 of hinge part> 4(A) to 4(C) show side views of a display device according to an aspect of the present invention.

[0095] The display device shown in FIG. 4(A) includes a display panel 100a, a display panel 100b, a display panel 1 00c, a support panel 30a, a support panel 30b, a support panel 30c, a first hinge part 39 c, and a second hinge part 39d.

[0096] The first hinge part 39c includes units 33e and 33f, and the second hinge part 3 9d includes units 33g and 33h.

[0097] Each unit includes a first axis 31, a second axis 32, a third axis 38, a first arm 36, and a second arm 37. The first arm 36 has a bearing for receiving the first axis 31 and a bearing for receiving the third axis 3 8. The second arm 37 has a bearing for receiving the second axis 32 and a bearing for receiving the third axis 3 8. The first arm 36 is rotatably connected about the first axis 31 and is also rotatably connected about the third axis 38. The second​ The arm 37 is rotatably connected about the second axis 32. Further, the second arm 37 is , rotatably connected about the third axis 38. Note that the first arm 36 is rotated about the first axis 31 and the second arm 37 is rotated about the second axis 32 may have the same or different angular magnitudes.

[0098] Since the display device has the hinge portion 39d, the display device can be changed from one of the states of FIG. 4(A) to the other state of FIG. 4(B).

[0099] In Example 1 of the hinge portion, as can be seen from the movement trajectories of the second axis 32c and the second axis 32d indicated by the dashed arrows in FIG. 2(B), in order to rotate the arm, a wide space is required in the stacking direction of the display panels (the thickness direction of the display panel). Therefore, space may be required when housing the display panel in a housing or the like. (the thickness direction of the display panel). Therefore, space may be required when housing the display panel in a housing or the like.

[0100] On the other hand, in Example 2 of the hinge portion, each unit has two arms. Therefore, for example, for each unit, the first arm 36 can be rotated by an angle θ about the first axis 31, and the second arm 37 can be rotated by an angle -θ about the second axis 32. As a result, as shown in FIG. 4(B), the relative position relationship between the display panel 100b and the display panel 100c can be changed without changing in the thickness direction of the display panel, and the display panel 100c can be moved (slid) in the direction indicated by the arrow (the horizontal direction, which can also be said to be the direction parallel to the surface on which the support panel supports the display panel or the display surface of the display panel). Therefore, the display device does not spread in the thickness direction of the display panel more than the state shown in FIG. 4(A), and the display device and The miniaturization of the electronic device can be achieved. As shown in FIG. 4(C), the first arms 36c, 36d, and the second arms 37c, 37d can preferably rotate until the display panel 100b and the display panel 100c are in contact with each other.

[0101] Similarly, since the display device has the hinge portion 39c, the area of the overlapping region between the display panel 100a and the display panel 100b can be made variable.

[0102] <Example 3 of hinge portion> FIGS. 5(A) to (C) and FIG. 6(A) show side views of a display device according to an aspect of the present invention. FIG. 6 (B) shows a top view of the display device shown in FIG. 6(A).

[0103] The display device shown in FIGS. 5(A) to (C) is different from the display device shown in Example 1 of the hinge portion (see FIG. 2(A) etc.) in that the position of the first axis 31 of each unit is variable.

[0104] In Example 1 of the hinge portion, like the portion surrounded by the two-dot chain line in FIG. 3(A), when the two display panels 1 00 are in contact, there may be a case where a gap is formed without the side surface of the support panel 30 that supports the upper display panel 100 contacting the support panel 30 that supports the lower display panel 100. Therefore, a portion that is not supported by the support panel 30 is generated on each display panel 100. Also, like the portion surrounded by the two-dot chain line in FIG. 3(B), there may be a case where the region 102, which is a non-display region of the display panel 100, is visually recognized by the user of the display device.

[0105] On the other hand, in Example 3 of the hinge portion, like the portion surrounded by the two-dot chain line in FIG. 6(A), when the two display panels 100 are in contact, the side surfaces of the support panel 30 that supports the two display panels 100 ​​​It is configured to be in contact with the cow. Therefore, the back surface of the display panel 100 (the surface facing the display surface) The entire body can be supported by the support panel 30, and the display panel 100 can be protected. Also, as shown in FIG. 6(B), the support panel 30 covers the display panel 100 over a wider area so that the area 102, which is the non-display area of the display panel 100, is not visible to the user of the display device. It can be covered with an area.

[0106] Moreover, in Example 3 of the hinge portion, when changing the relative positional relationship between the two support panels 30, it is possible to prevent the support panel 30 and the display panel 100 from coming into contact and being damaged.

[0107] As described above, Example 3 of the hinge portion is a configuration that can enhance the reliability of the display device.

[0108] Specifically, as shown in FIG. 5(B), by moving the first axis 31, the rotation center of the arm 35 can be moved. For example, as shown in FIG. 5(B), when moving the display panel 10 0c to the right side of the display panel 100b, the first axis 31 is also moved to the right side. Then, while moving the rotation center of the arm 35, the support panel 30c can be moved This enables the support panel 30b to be horizontally separated from the support panel 30c more than in FIG. 2(B) in FIG. 5(B), preventing the display panel 100b and the display panel 100c, or the support panel 30b and the support panel 30c, etc., from rubbing against each other. This can prevent rubbing.

[0109] Next, by moving the first axis 31 in the direction opposite to the direction in which it was first moved (here, to the left side), the display panel 100c is brought closer to the display panel 100b. Then, as shown in FIG. 5(C), The display panel 100b and the display panel 100c can be brought into contact with each other. This shows an example in which a part of the panel 100c can be sandwiched between the support panels 30b. The overlapping portion of the two display panels 100 can also be supported by the support panel 30. , the display panel 100 can be protected.

[0110] Similarly, the display device can be changed from the state shown in FIG. 5(C) to the state shown in FIG. 6(A). do.

[0111] As shown in FIG. 6B, the support panel 30 is positioned in the non-display area of the display panel 100. It is preferable to have a structure in which the cover 102 is covered, since it is possible to protect the display panel 100. One embodiment of the present invention is not limited to this, and a part of the region 102 may be exposed.

[0112] <Hinge part example 4> FIG. 7A illustrates a side view of a display device according to one embodiment of the present invention.

[0113] The unit to which the first axis 31 is adapted is the first axis 31 shown in Example 1 of the hinge part. The present invention is not limited to a unit having a first shaft 31, a second shaft 32, and a first arm 35. For example, As shown in FIG. 7A, the first shaft 31, the second shaft 32, and the third shaft 33 shown in Example 2 of the hinge portion This also applies to a unit having a shaft 38, a first arm 36, and a second arm 37. can be done.

[0114] This allows the display panel 100 to be moved in the horizontal direction, and the display panel This can prevent the display panel 100 and the support panel 30 from rubbing against each other. The overlapping portion of the display panel 100 can be supported by the support panel 30. It is possible to prevent the user from visually recognizing the area 102, which is a non-display area of the display panel. It can be done.

[0115] <Example 5 of the hinge part> FIG. 7(B) shows a side view of a display device according to an aspect of the present invention.

[0116] In Example 3 of the hinge part (FIG. 5(A), etc.), the rotation center of the arm 35 can be moved. Although an example has been shown, as shown in FIG. 7(B), even if the configuration is such that the rotation radius of the arm 39 can be changed, the same effect as that of Example 3 of the hinge part can be achieved.

[0117] Specifically, when moving the support panel 30, it is possible to prevent the display panel 100 and the support panel 30 from rubbing against each other. Also, the support panel 30 can support the overlapping portion of the two display panels 100. And it is possible to prevent the user of the display device from visually recognizing the area 102, which is a non-display area of the display panel. And it is possible to prevent the display panel 100 and the support panel 30 from rubbing against each other. Also, the support panel 30 can support the overlapping portion of the two display panels 100. And it is possible to prevent the user of the display device from visually recognizing the area 102, which is a non-display area of the display panel. And it is possible to prevent the user of the display device from visually recognizing the area 102, which is a non-display area of the display panel. It can be done.

[0118] Note that the present invention can also be applied to the unit having the first shaft 31, the second shaft 32, the third shaft 38, the first arm 36, and the second arm 37 shown in Example 2 of the hinge part. Specifically, it may be configured such that the rotation radius of each of the first arm 36 and the second arm 37 can be changed. Specifically, it may be configured such that the rotation radius of each of the first arm 36 and the second arm 37 can be changed. It may be configured such that the rotation radius of each of the first arm 36 and the second arm 37 can be changed.

[0119] So far, as an example of a mechanism for making the area of the overlapping portion of the two display panels variable, the case where the display device has a hinge part has been described, but one aspect of the present invention is not limited to this. It is not limited to this.

[0120] For example, a display device according to an aspect of the present invention may not have a hinge part. For example, on the one hand One support panel has a convex portion, and the other support panel has a concave portion, and the convex portion is slid within the concave portion to make the relative positional relationship between the two support panels variable. Even with such a configuration, it is possible to vary the area of the portion where the two display panels overlap. Also, the area of the display region of the display device can be varied. Hereinafter, an electronic device having a display device using such a configuration will be described.

[0121] Examples of the electronic device exemplified in this specification and the like include, for example, a television device (also referred to as a television or a television receiver), a monitor for a computer, a digital camera, a digital video camera, a digital photo frame, a mobile phone (also referred to as a mobile phone or a mobile phone device), a portable game machine, a portable information terminal, an audio reproduction device, a large game

[0122] <Example 1 of the electronic device> FIGS. 8(A1) and 9(A) respectively show top views of the electronic device 200. FIG. 8(A2) shows a cross-sectional view between the dashed-dotted lines C1 - C2 in FIG. 8(A1), and FIG. 8(A3) shows a cross-sectional view between the dashed-dotted lines C3 - C4 in FIG. 8(A1). FIG. 9(B) shows a cross-sectional view between the dashed-dotted lines C7 - C8 in FIG. 9(A), and FIG. 9(C) shows a cross-sectional view between the dashed-dotted lines C9 - C10 in FIG. 9(A).

[0123] FIGS. 8(A1) to (A3) are diagrams showing a state in which a display device is housed inside the electronic device 200.

[0124] FIGS. 9(A) to (C) are diagrams showing a state in which the display device is deployed from inside the electronic device 200.

[0125] The electronic device 200 has a housing 201a and a housing 201b. The electronic device 200 has, inside the housing, a display device, a battery 211, a circuit board 212, and an antenna 213.

[0126] The display device has a support panel 70a, a support panel 70b, a support panel 70c, a display panel 10 0a, a display panel 100b, and a display panel 100c.

[0127] The electronic device 200 shown in FIGS. 8(A1) to (A3) has, inside the housing, a support panel 70a and a support panel 70b on the support panel 70a and a support panel 70c on the support panel 70b. The support panel 70a supports the display panel 100a, the support panel 70b supports the display panel 100b, and the support panel 70c supports the display panel 100c.

[0128] The circuit board 212 has, for example, a CPU, various memories, a wireless module, etc.

[0129] The electronic device 200 can change from one of the states of FIG. 8(A1) and FIG. 9(A) to the other. For example, when using the electronic device 200, as shown in FIG. 9(A), display can be performed using a wide display area 11. Also, when not using the electronic device 200, as shown in FIG. 8(A1), the area where the three display panels overlap can be made wider, and the electronic device 200 can be miniaturized. Thereby, the portability of the electronic device 200 can be enhanced. Also, the storage space of the electronic device 200 can be made narrower. Moreover, by arranging the display panel inside the housing, it is possible to suppress damage and dirt on the display surface of the display panel.

[0130] ​​​​ FIG. 8(A2) and FIG. 9(B) correspond to cross-sectional views of portions where each support panel has at least one of a convex portion or a concave portion.

[0131] The housing 201a has a convex portion on the surface on the support panel 70a side.

[0132] The support panel 70a has concave portions on two surfaces facing each other. Specifically, it has a first concave portion on the battery 211 side and a second concave portion on the support panel 70b side.

[0133] Of the two surfaces facing each other of the support panel 70b, one surface side (the support panel 70a side ) has a convex portion, and the other surface side (the support panel 70c side) has a concave portion.

[0134] The support panel 70c has a convex portion on the support panel 70b side.

[0135] The first concave portion of the support panel 70a is wider than the convex portion of the housing 201a. The support panel 70 a can move relative to the housing 201a. The convex portion of the housing 201a can slide within the first concave portion of the support panel 70a. Note that a concave portion may be provided on the housing 201a and a convex portion may be provided on the support panel 70a. With such a configuration, when the display device disposed inside the housing is pulled out, it is possible to prevent the display device from separating from the housing ( refer to the region indicated by the two-dot chain line on the rightmost side in FIG. 9(B)).

[0136] The second concave portion of the support panel 70a is wider than the convex portion of the support panel 70b. The second concave portion of the support panel 70a is deeper than other portions and has a portion that fits with the convex portion of the support panel 70b. The support panel 70b can move relative to the support panel 70a. ​​​​​The convex portion of the support panel 70b can slide within the second concave portion of the support panel 70a. Further, by fitting the convex portion of the support panel 70b with the second concave portion of the support panel 70a, the relative positions of the support panel 70a and the support panel 70b can be fixed. Note that a concave portion may be provided on the support panel 70b, and a convex portion may be provided on the support panel 70a.

[0137] Similarly, the concave portion of the support panel 70b is wider than the convex portion of the support panel 70c. The concave portion of the support panel 70b is deeper than other portions and has a portion that fits with the convex portion of the support panel 70c. The support panel 70c can move relative to the support panel 70b. The convex portion of the support panel 70c slides within the concave portion of the support panel 70b. Further, by fitting the convex portion of the support panel 70c with the concave portion of the support panel 70b, the relative positions of the support panel 70b and the support panel 70c can be fixed. Note that a concave portion may be provided on the support panel 70c, and a convex portion may be provided on the support panel 70b.

[0138] More specifically, from the states shown in FIGS. 8(A1) and (A2), to the states shown in FIGS. 9(A) and (B), each support panel 70 can be moved and deployed relative to the housing 201a. At this time, like the two regions indicated by the two-dot chain line in the center of FIG. 9(B), by fitting the convex and concave portions of the two opposing support panels 70, each support panel 70 can be fixed in the deployed state.

[0139] Note that as shown in FIG. 9(C), it is preferable that the two display panels can be in contact with and overlap each other, so that the step or joint between the two display panels is less likely to be visually recognized. FIGS. 8(A2) and ​​​​​​​​​​​As shown in FIG. 9(B), on the side surface of the support panel 70c, there is provided a convex portion that can move within a concave portion provided in the housing 201b (refer to the region indicated by the two-dot chain line on the rightmost side in FIG. 9(B)). Thus, the support panel 70c can change its relative position with respect to other support panels in the direction in which the display panel is laminated (the thickness direction of the display panel). Note that, here, an example in which the housing has the battery 211, the circuit board 212, and the antenna 213 inside is shown, but one aspect of the present invention is not limited to this. For example, the display device may have at least any one of a battery, a circuit board, or an antenna, etc., in addition to the display panel and the support panel. For example, the support panel may have at least any one of a battery, a circuit board, or an antenna, etc., inside. The display device itself may have a function as an electronic device. In this case, the housing has at least a function of housing and protecting the display device. Also, an electronic device according to one aspect of the present invention has any one of a battery, a circuit board, an antenna, a speaker, a microphone, or an operation button, etc. As the battery, it may have a secondary battery, and it is preferable that the secondary battery can be charged using non-contact power transmission. Examples of the secondary battery include lithium-ion secondary batteries such as lithium polymer batteries (lithium ion polymer batteries) using a gel electrolyte, nickel-metal hydride batteries, nickel-cadmium batteries, organic redox batteries, lead-acid batteries, air secondary batteries, nickel-zinc batteries, silver-zinc batteries, and the like.

[0140]

[0141]

[0142]

[0143] ​​​​​​​​​​​​​​By receiving signals with the antenna, the display panel can display images, information, etc. This is also possible. Further, the antenna may be used for non-contact power transmission.

[0144] <Example 2 of electronic device> FIG. 8(B1) and FIG. 10(A) respectively show top views of the electronic device 210. FIG. 8(B2 ), (B3) respectively show an example of a cross-sectional view between the dashed-dotted lines C5-C6 in FIG. 8(B1) FIG. 10(B) shows a cross-sectional view between the dashed-dotted lines C11-C12 in FIG. 10(A), and FIG. 10(C) shows a cross-sectional view between the dashed-dotted lines C13-C14 in FIG. 10(A).

[0145] FIGS. 8(B1) to (B3) are diagrams showing a state in which the display device is housed inside the electronic device 210.

[0146] FIGS. 10(A) to (C) are diagrams showing a state in which the display device is deployed from inside the electronic device 210.

[0147] The electronic device 210 shown in FIG. 8(B1) is different from the electronic device 200 shown in FIG. 8(A1) in that the user can view the display area 101c of the display panel 100c even when the display device is housed inside the electronic device 210. The electronic device 210, as shown in FIGS. 10(A) to (C), not only displays in a state where the display device is deployed, but also, as shown in FIG. 8(B1), can display in a state where the display device is housed. In FIG. 8(B1), only the display panel located on the topmost side needs to perform the display. As shown in FIG. 8(B2), the display panel 100c does not overlap with the housing 201a on the display surface side.

[0148] ​​​​​​​It may also be configured as such. Further, as shown in FIG. 8(B3), the housing 201a has a region 205 that transmits visible light, and the display panel 100c may be configured to overlap with the region 205 that transmits visible light on the display surface side. In FIG. 8(B3), since the display surface of the display panel 100c is protected by the housing 201a, it is possible to suppress the occurrence of scratches and dirt, which is preferable. The housing 201a has a region 205 that transmits visible light, and the display panel 100c may be configured to overlap with the region 205 that transmits visible light on the display surface side. In FIG. 8(B3), since the display surface of the display panel 100c is protected by the housing 201a, it is possible to suppress the occurrence of scratches and dirt, which is preferable. FIG. 10(B) corresponds to a cross-sectional view of a portion where each support panel has at least one of a convex portion or a concave portion.

[0149] FIG. 10(B) corresponds to a cross-sectional view of a portion where each support panel has at least one of a convex portion or a concave portion. Corresponding.

[0150] The support panel 70a has a concave portion on the side where the support panel 70b overlaps.

[0151] Of the two surfaces of the support panel 70b that face each other, one surface side (the support panel 70a side) has a convex portion, and the other surface side (the support panel 70c side) has a concave portion. ).

[0152] The support panel 70c has a convex portion on the side where the support panel 70b overlaps.

[0153] The concave portion of the support panel 70a is wider than the convex portion of the support panel 70b. The concave portion of the support panel 70a is deeper than other portions and has a portion that fits with the convex portion of the support panel 70b. The support panel 70b can move relative to the support panel 70a. The convex portion of the support panel 70b can slide within the concave portion of the support panel 70a. Further, by fitting the convex portion of the support panel 70b with the concave portion of the support panel 70a, the relative position between the support panel 70a and the support panel 70b can be fixed. Note that a concave portion may be provided on the support panel 70b and a convex portion may be provided on the support panel 70a. The concave portion of the support panel 70a is deeper than other portions and has a portion that fits with the convex portion of the support panel 70b. The support panel 70b can move relative to the support panel 70a. The convex portion of the support panel 70b can slide within the concave portion of the support panel 70a. The support panel 70b can move relative to the support panel 70a. The convex portion of the support panel 70b can slide within the concave portion of the support panel 70a. Further, by fitting the convex portion of the support panel 70b with the concave portion of the support panel 70a, the relative position between the support panel 70a and the support panel 70b can be fixed. Note that a concave portion may be provided on the support panel 70b and a convex portion may be provided on the support panel 70a. The convex portion of the support panel 70b can slide within the concave portion of the support panel 70a. Further, by fitting the convex portion of the support panel 70b with the concave portion of the support panel 70a, the relative position between the support panel 70a and the support panel 70b can be fixed. Note that a concave portion may be provided on the support panel 70b and a convex portion may be provided on the support panel 70a. Further, by fitting the convex portion of the support panel 70b with the concave portion of the support panel 70a, the relative position between the support panel 70a and the support panel 70b can be fixed. Note that a concave portion may be provided on the support panel 70b and a convex portion may be provided on the support panel 70a. Note that a concave portion may be provided on the support panel 70b and a convex portion may be provided on the support panel 70a. It may also be configured such that a concave portion is provided on the support panel 70b and a convex portion is provided on the support panel 70a.

[0154] Similarly, the concave portion of the support panel 70b is wider than the convex portion of the support panel 70c. The concave portion of the support panel 70b is deeper than other portions and has a portion that fits with the convex portion of the support panel 70c. The support panel 70c can move relative to the support panel 70b. The convex portion of the support panel 70c can slide within the concave portion of the support panel 70b. Also, when the convex portion of the support panel 70c fits with the concave portion of the support panel 70b, the relative position between the support panel 70b and the support panel 70c can be fixed. Note that a concave portion may be provided on the support panel 70c and a convex portion may be provided on the support panel 70b. More specifically, from the states shown in FIGS. 8(B1) and (B2), each support panel 70 can be moved and deployed relative to the housing 201a to the states shown in FIGS. 10(A) and (B). Note that as shown in FIG. 10(C), it is preferable that when the two display panels are in contact with and overlap each other, the step or joint between the two display panels is less likely to be visually recognized. As shown in FIGS. 8(B2) and 10(B), a convex portion that can move within the concave portion provided in the housing 201b is provided on the side surface of the support panel 70c. Thereby, the support panel 70c can change its relative position with respect to other support panels in the height direction (the thickness direction of the display panel). <Example 2 of the display device>

[0155] So far, an example of a display device in which a plurality of stacked display panels can be deployed in a direction along a straight line has been shown, but one aspect of the present invention is not limited to this. For example, a direction along a curve

[0156]

[0157] ​​​​​​​​​​​It may be unfolded as desired. Also, a plurality of display panels may be unfolded in two or more directions.

[0158] FIGS. 11(A) and (B) respectively show top views of the display device 15.

[0159] The display device 15 has eight display panels (display panels 100a to 100h). The display device 15 can unfold the eight display panels in a direction along a curve. The number of display panels included in the display device is not limited. The display device 15 can be unfolded within an arbitrary range between greater than 0° and less than 360°.

[0160] FIG. 11(C) shows a side view of the display device 15 shown in FIG. 11(B), and FIG. 11(D) shows a side view of the display panel 100a. FIGS. 11(C) and (D) are side views on the long side of the display panel 100a.

[0161] The display device 15 can change from one of the states in FIG. 11(A) to the other state in FIG. 11(B).

[0162] For example, as shown in FIG. 11(D), a display panel having a display surface on one side can be used. Also, a display panel having display surfaces on two opposing sides may be used.

[0163] In the overlapping portion of the display area 101 of the display panel 100 located on the lower side and the visible light transmission area 110 of the display panel 100 located on the upper side, light interference may occur at the end of the visible light transmission area 110.

[0164] Here, the display area 101 has red pixels R, green pixels G, and blue pixels B. Consider the case. In FIG. 12(A), pixels of the same color are arranged in the X direction. Here, when one side of the region 110 that transmits visible light is parallel to the X direction, on that side, red, green, and blue monochromatic light is likely to be visually recognized periodically. This is because there are pixels arranged periodically at the ends of the region 110 that transmits visible light. When a user of the display device visually recognizes monochromatic light, it becomes easier to recognize the ends of the region 110 that transmits visible light.

[0165] Therefore, as shown in FIG. 12(B), the angle θ formed between the X direction (the direction in which pixels of the same color are arranged) and one side of the region 110 that transmits visible light is preferably greater than 0° and less than 50°, more preferably 10° or more and less than 50°. By making the angle θ greater than 0°, the period of red, green, and blue monochromatic light can be shortened. The shorter the period, the less conspicuous the ends of the region 110 that transmits visible light are to the user of the display device because red, green, and blue appear to be mixed and look white. Or, it can also be said that the angle formed by the overlapping region of the pixels and the region 110 that transmits visible light is preferably greater than 0° and less than 50°, more preferably 10° or more and less than 50°. When the angle θ is 50° or more, new light interference may occur.

[0166] As in the display device 15 shown in FIG. 11(A), when the display panel 100 is unfolded in a direction along a curve, it is easy to control the angle θ formed between the direction in which pixels of the same color are arranged and one side of the region 110 that transmits visible light, which is preferable.

[0167] <Example 3 of the display device> FIG. 13(A) shows a front view of the display device 16, and FIG. 13(B) shows a rear view of the display device 16. ​​​​​​is shown. Also, FIG. 14(A) shows a front view of the display device 16, and FIG. 14(B) shows a side view of the display device 16 shown in FIG. 14 (A). And FIG. 14(C) shows a diagram for explaining how two display panels are stacked. Also, FIG. 14(D) shows side views of the display panel 100a(1) and the display panel 100a(2), and FIG. 14(D) shows a side view of the display panel 100a . FIGS. 14(B), (D), and (E) are side views of the long side of the display panel, respectively. The display device 16 can change from one of the states in FIG. 13(A) to the other state in FIG. 14(A).

[0168] As shown in FIG. 14(B), the display device 16 has eight display panels (display panel 100a( 1) to display panel 100d(1) and display panel 100a(2) to display panel 100d( 2)). The display device 16 can expand the eight display panels in a direction along a curve.

[0169] 2)). As shown in FIGS. 14(C) and (D), the display panel 100a(1) and the display panel 100a (2) overlap with each other such that their display surfaces face outward.

[0170]

[0171] Therefore, as shown in FIG. 13(A), on one surface (here, the front surface) of the display device 16, display using the display panels 100a(1) to 100d(1) can be performed. And, as shown in FIG. 13(B), on the other surface (here, the back surface) of the display device 16, display using the display panels 100a(2) to 100d(2) can be performed.

[0172] ​​​​​​As shown in Fig. 14(C), the area consisting of the display area 101 and the area 120 that blocks visible light of the display panel 100a(1) and the area consisting of the display area 101 and the area 120 that blocks visible light of the display panel 100a(2) are arranged so as to overlap each other. Also, the areas 110 that transmit visible light of the display panel 100a(1) and the display panel 100a(2) are arranged so as to overlap each other. As a result, on the front and back surfaces of the display device 16, the area 110 that transmits visible light of the upper display panel and the display area 101 of the lower display panel overlap, and the area 120 that blocks visible light of the upper display panel and the display area 101 of the lower display panel do not overlap. Therefore, through the area 110 that transmits visible light of the upper display panel, the user of the display device can visually recognize the display area 101 of the lower display panel. As shown in Fig. 13(A), when viewed from the front surface, the display panel 100d(1) of the display device 16 is located at the uppermost position, and the display panel 100a(1) is located at the lowermost position. On the other hand, as shown in Fig. 13(B), when viewed from the back surface, the display panel 100a(2) of the display device 16 is located at the uppermost position, and the display panel 100d(2) is located at the lowermost position. Each display panel 100 has areas 110 that transmit visible light on two sides, and the areas 110 that transmit different visible lights on the front and back surfaces overlap the display area 101 of the adjacent display panel 100. For example, as shown in Fig. 13(A), one of the areas 110 that transmit visible light of the display panel 100b(1) overlaps the display area 101 of the display panel 100a(1).

[0173]

[0174] ​​​​​​​​​​​​​​​The other region 110 that transmits visible light of the display panel 100b(1) overlaps with the display region 101 of the display panel 100c (2). Also, a part of the display region 101 of the display panel 100b(1) overlaps with the regions 110 that transmit visible light of the display panels 100c(1) and 100c(2). That is, the user of the display device can visually recognize the display region 101 of the display panel 100b(1) through the regions 110 that transmit visible light of the two display panels. A part of the display region 101 of the display panel 100b(1) overlaps with the regions 110 that transmit visible light of the display panels 100c(1) and 100c(2). That is, the user of the display device can visually recognize the display region 101 of the display panel 100b(1) through the regions 110 that transmit visible light of the two display panels. That is, the user of the display device can visually recognize the display region 101 of the display panel 100b(1) through the regions 110 that transmit visible light of the two display panels. That is, the user of the display device can visually recognize the display region 101 of the display panel 100b(1) through the regions 110 that transmit visible light of the two display panels. That is, the user of the display device can visually recognize the display region 101 of the display panel 100b(1) through the regions 110 that transmit visible light of the two display panels.

[0175] In addition, in FIGS. 13(A), (B), and FIGS. 14(A) to (D), examples using display panels having a display surface on one surface are shown. However, as shown in FIG. 14(E), a display panel 100a having display surfaces on two opposing surfaces may be used. In addition, in FIGS. 13(A), (B), and FIGS. 14(A) to (D), examples using display panels having a display surface on one surface are shown. However, as shown in FIG. 14(E), a display panel 100a having display surfaces on two opposing surfaces may be used. In addition, in FIGS. 13(A), (B), and FIGS. 14(A) to (D), examples using display panels having a display surface on one surface are shown. However, as shown in FIG. 14(E), a display panel 100a having display surfaces on two opposing surfaces may be used.

[0176] Also, in one aspect of the present invention, a display device or an electronic device in a fan shape (approximate fan shape) can be manufactured using a configuration in which a plurality of display panels can be deployed in a direction along a curve. Also, in one aspect of the present invention, a display device or an electronic device in a fan shape (approximate fan shape) can be manufactured using a configuration in which a plurality of display panels can be deployed in a direction along a curve.

[0177] When attempting to manufacture a display device in the shape of a fan using one display panel, if a fold is made in the display panel, display defects may occur, such as a part of the layer constituting the display panel peeling off. Also, if the display panel is bent with a curvature that does not adversely affect the display of the display panel, the thickness may increase when the fan is folded, and the portability and storage performance of the display device may deteriorate. When attempting to manufacture a display device in the shape of a fan using one display panel, if a fold is made in the display panel, display defects may occur, such as a part of the layer constituting the display panel peeling off. Also, if the display panel is bent with a curvature that does not adversely affect the display of the display panel, the thickness may increase when the fan is folded, and the portability and storage performance of the display device may deteriorate. When attempting to manufacture a display device in the shape of a fan using one display panel, if a fold is made in the display panel, display defects may occur, such as a part of the layer constituting the display panel peeling off. Also, if the display panel is bent with a curvature that does not adversely affect the display of the display panel, the thickness may increase when the fan is folded, and the portability and storage performance of the display device may deteriorate. When attempting to manufacture a display device in the shape of a fan using one display panel, if a fold is made in the display panel, display defects may occur, such as a part of the layer constituting the display panel peeling off. Also, if the display panel is bent with a curvature that does not adversely affect the display of the display panel, the thickness may increase when the fan is folded, and the portability and storage performance of the display device may deteriorate. When attempting to manufacture a display device in the shape of a fan using one display panel, if a fold is made in the display panel, display defects may occur, such as a part of the layer constituting the display panel peeling off. Also, if the display panel is bent with a curvature that does not adversely affect the display of the display panel, the thickness may increase when the fan is folded, and the portability and storage performance of the display device may deteriorate.

[0178] On the other hand, in one aspect of the present invention, a display region of a display device can be formed using a plurality of display panels. Since each display panel does not need to be bent when folding the fan, a decrease in the reliability of the display panel due to bending can be suppressed. Examples of an approximate fan-shaped electronic device are shown below. On the other hand, in one aspect of the present invention, a display region of a display device can be formed using a plurality of display panels. Since each display panel does not need to be bent when folding the fan, a decrease in the reliability of the display panel due to bending can be suppressed. Examples of an approximate fan-shaped electronic device are shown below. On the other hand, in one aspect of the present invention, a display region of a display device can be formed using a plurality of display panels. Since each display panel does not need to be bent when folding the fan, a decrease in the reliability of the display panel due to bending can be suppressed. Examples of an approximate fan-shaped electronic device are shown below.

[0179] <Electronic device example 3> An example of an electronic device using the display device 15 shown in FIGS. 11(A) to 11(C) is shown. 2A and 2B show top views of the electronic device 250, respectively.

[0180] FIG. 15(A) shows a state in which a plurality of display panels are housed inside an electronic device 250. Figure.

[0181] FIG. 15(B) is a diagram showing a state in which a plurality of display panels are unfolded from inside the electronic device 250. be.

[0182] The electronic device 250 has a housing 251a and a housing 251b. Inside, there are six display panels (display panel 100a to display panel 100f), a battery 25 15B, the housing 251a includes a circuit board 253 and an antenna 254. An example in which a circuit board 253 and an antenna 254 are included and a battery 256 is included in the housing 251b is shown. The battery 256, the circuit board 253, and the antenna 254 are housed in the housing 251a or The battery and the like may be provided together on one side of the housing 251b. It may be provided in both the housing 251a and the housing 251b.

[0183] One display panel 100 is connected to one handle 257. A plurality of handles 257 may be connected to two or more handles. 52. The handles 257 are also connected by a string 258 that passes through the opening. The member to be passed through the opening of the handle 257 is not limited to a string, but may be a thread, rope, wire, ribbon, or the like. Alternatively, the member to be passed through the opening may be flexible and in the form of a fiber or a strip. For example, natural fibers, synthetic fibers, paper, synthetic resin, rubber, metal, alloy, etc. can be used. It can be achieved. On the handle 257, there are provided wiring or the like for electrically connecting the circuit board 253 provided in the housing 251a and the display panel 100 and so on. In the handle 257, the more the portion bundled by the string 252 and the portion through which the string 258 passes are separated, the more preferably the movement between the handle 257 and the display panel 100 is controlled and it becomes easier to handle them together. The electronic device 250 can change from one of the states shown in FIGS. 15(A) and 15(B) to the other. For example, when using the electronic device 250, as shown in FIG. 15(B), display can be performed using the display areas 101 of a plurality of display panels. When not using the electronic device 250, as shown in FIG. 15(A), by making the area where the plurality of display panels overlap wider, the electronic device 250 can be miniaturized. Thereby, the portability of the electronic device 250 can be enhanced. Also, the storage space of the electronic device 250 can be made narrower. Further, by arranging the display panel inside the housing, it is possible to suppress the display surface of the display panel from being scratched or soiled.

[0184] The electronic device 250 can be used as a fan, a folding fan, or a round fan when it is opened in a fan shape. FIGS. 16(A) and 16(B) respectively show top views of the electronic device 260. FIG. 16(A) is a view showing a state in which a plurality of display panels are housed inside the electronic device 260. FIG. 16(B) is a view showing a state in which a plurality of display panels are deployed from inside the electronic device 260.

[0185]

[0186]

[0187] <Example 4 of the electronic device>

[0188]

[0189] ​​​​​​​​​​ The electronic device 260 has a housing 261a and a housing 261b. The electronic device 260 has, inside the housing, n display panels (display panel 100(1) to display panel 100(n), in one aspect of the present invention, n is a natural number of 2 or more, and in FIG. 16(B), n is a natural number of 7 or more. ). The electronic device 260 preferably has a battery, a circuit board, and an antenna.

[0190] One display panel 100 is connected to one handle 267. The plurality of handles 267 are bundled by a string 62. Also, the plurality of handles 267 are also connected by a string 268 passing through an opening.

[0191] The electronic device 260 shown in FIG. 16(A) allows the user to view the display area 101(n) of the display panel 100(n) even when the display panel 100 is housed inside the electronic device 260, which is different from the electronic device 250 shown in FIG. 15(A). Therefore, as shown in FIG. 16(B), the electronic device 260 not only performs display in the state where the display device is deployed, but also, as shown in FIG. 6(A), can perform display in the state where the display device is

[0192] Moreover, the display panel 100 is not limited to a rectangle as shown in FIG. 15(A) etc., and may be a quadrilateral such as a trapezoid as shown in FIG. 16(A) etc., or a polygon other than a quadrilateral, a circle, a sector, etc.

[0193] As described above, in one aspect of the present invention, a fan-shaped electronic

[0194] <Example 5 of Electronic Device> In the electronic device 250 and the electronic device 260, a configuration having a plurality of display panels 100 is adopted, but one aspect of the present invention is not limited to this. For example, the plurality of display panels 100 included in the electronic device 250 and the electronic device 260 may each independently have a battery, an antenna, a circuit board, etc., and may be configured to be usable with only one display panel 100. In the electronic device 250 and the electronic device 260, a configuration having a plurality of display panels 100 is adopted, but one aspect of the present invention is not limited to this. For example, the plurality of display panels 100 included in the electronic device 250 and the electronic device 260 may each independently have a battery, an antenna, a circuit board, etc., and may be configured to be usable with only one display panel 100. In the electronic device 250 and the electronic device 260, a configuration having a plurality of display panels 100 is adopted, but one aspect of the present invention is not limited to this. For example, the plurality of display panels 100 included in the electronic device 250 and the electronic device 260 may each independently have a battery, an antenna, a circuit board, etc., and may be configured to be usable with only one display panel 100. In the electronic device 250 and the electronic device 260, a configuration having a plurality of display panels 100 is adopted, but one aspect of the present invention is not limited to this. For example, the plurality of display panels 100 included in the electronic device 250 and the electronic device 260 may each independently have a battery, an antenna, a circuit board, etc., and may be configured to be usable with only one display panel 100.

[0195] FIG. 17(A) shows an electronic device 270 having one display panel 100.

[0196] The electronic device 270 has wiring, a circuit board, a battery, etc. in the handle 278. The wiring is electrically connected to the display panel 100. The circuit board etc. are electrically connected to the display panel 100 via the wiring. Further, operation buttons 277 etc. may be provided on the handle 278 or the holder 279. The electronic device 270 has wiring, a circuit board, a battery, etc. in the handle 278. The wiring is electrically connected to the display panel 100. The circuit board etc. are electrically connected to the display panel 10s via the wiring. Further, operation buttons 277 etc. may be provided on the handle 278 or the holder 279. The electronic device 270 has wiring, a circuit board, a battery, etc. in the handle 278. The wiring is electrically connected to the display panel 100. The circuit board etc. are electrically connected to the display panel 100 via the wiring. Further, operation buttons 277 etc. may be provided on the handle 278 or the holder 279. The electronic device 270 has wiring, a circuit board, a battery, etc. in the handle 278. The wiring is electrically connected to the display panel 100. The circuit board etc. are electrically connected to the display panel 100 via the wiring. Further, operation buttons 277 etc. may be provided on the handle 278 or the holder 279.

[0197] For example, the electronic device 270 can be used alone as the electronic device 270, or can be used as a part of the electronic device 260. Specifically, the handle 278 can be removed from the holder 279 and bundled with other handles with the essentials 262. For example, the electronic device 270 can be used alone as the electronic device 270, or can be used as a part of the electronic device 260. Specifically, the handle 278 can be removed from the holder 279 and bundled with other handles with the essentials 262. For example, the electronic device 270 can be used alone as the electronic device 270, or can be used as a part of the electronic device 260. Specifically, the handle 278 can be removed from the holder 279 and bundled with other handles with the essentials 262.

[0198] Also, as shown in FIG. 17(B), the electronic device 270 can be used as a part of the fan-shaped electronic device 280. Specifically, the handle 278 can be removed from the holder 279 and inserted into the holder 289. Also, as shown in FIG. 17(B), the electronic device 270 can be used as a part of the fan-shaped electronic device 280. Specifically, the handle 278 can be removed from the holder 279 and inserted into the holder 289. Also, as shown in FIG. 17(B), the electronic device 270 can be used as a part of the fan-shaped electronic device 280. Specifically, the handle 278 can be removed from the holder 279 and inserted into the holder 289.

[0199] Each holder preferably has a function of protecting the handle 278 and a function of connecting a plurality of handles. Alternatively, a battery, a circuit board, etc. may be provided on each holder. Each holder preferably has a function of protecting the handle 278 and a function of connecting a plurality of handles. Alternatively, a battery, a circuit board, etc. may be provided on each holder.

[0200] In one aspect of the present invention, an electronic device 270 that can be used as an electronic device alone is used alone and can be used in various applications such as being used as part of a fan-shaped or sector-shaped electronic device. Such an electronic device will be described in detail in Embodiment 2 as well.

[0201] <Application Example> As one of the application examples, there is a configuration in which a display device or an electronic device according to one aspect of the present invention is suspended in the air by an ad balloon (all balloons and airships used for advertising purposes).

[0202] Ad balloon 290 is shown in FIGS. 18(A) and (B). FIG. 18(A) shows the ad balloon 290 before inflation, and FIG. 18(B) shows the ad balloon 290 in the inflated state.

[0203] Ad balloon 290 has a spherical body 291, an electronic device 295, and a rope 296.

[0204] Electronic device 295 is connected between spherical body 291 and rope 296.

[0204] As the spherical body 291, a balloon or an airship can be used. To prevent the ad balloon 290 from flying away, the rope 296 is attached to a structure such as a building railing, or a fixing part of the rope 296 is prepared separately to inflate the ad balloon 290.

[0205] The electronic device 295 according to one aspect of the present invention has flexibility and can be manufactured using a thin and lightweight display panel, so the weight can be suppressed. Therefore, it is possible to reduce the size of the spherical body 291, reduce the area of the installation site, or reduce the amount of gas such as helium gas to be filled, which is preferable.

[0206]

[0206] In addition, the electronic device 295 can easily change the advertisement characters by changing the display. Therefore, it is more durable than advertising letters made of glassine paper or vinyl. This is preferable because it can be used repeatedly. The wide range of materials available allows for high water resistance and stain resistance, making it a popular choice. For example, the housing 293a and the housing 293b are made of thin plastic. A case or film made of a material such as a plastic may also be used.

[0207] Electronic equipment 295 can provide highly visible displays whether outdoors, indoors, daytime, or nighttime. This allows advertising text to be displayed in a variety of locations and for a variety of purposes.

[0208] As shown in FIG. 18(A), the electronic device 295 has a housing 293a and a housing 293b. The display panel can be stored inside, making it compact and reducing storage space restrictions. It also helps prevent scratches and dirt from getting on the display panel during storage.

[0209] 18(B), when the advertising balloon 290 is raised, the electronic device 295 By unfolding the display device from inside, advertising text can be displayed.

[0210] The support panel 294 is preferably thin and lightweight. It also has high water resistance and stain resistance. is preferred.

[0211] FIG. 18B shows an example of an electronic device 295 having seven display panels. The number of the display panels is not limited. By overlapping the overlapping areas 110, the electronic device 295 has a wide area where the seams are hard to see. The display area can be used to provide a display.

[0212] In addition, the electronic device 295 can change the size of the display area as needed depending on the number of characters for the advertisement. This can be done.

[0213] <Example of display system> In addition to the display device of one embodiment of the present invention, a display system including a driver device and an output device An electronic device having the display system is also one aspect of the present invention.

[0214] The driving device has a function of supplying signals and potentials for driving the display panel to the display panel. do.

[0215] The driving device includes an antenna, a radio receiver, a radio transmitter, a battery, a computing device, a memory device, etc. A printed circuit board (circuit board) on which an IC is mounted may also be configured to have one or more of the following: good.

[0216] The output device has a function of outputting an image signal to the drive device.

[0217] The drive device and the output device may be electrically connected by a cable. If the output device is configured to be able to send and receive signals wirelessly, cables will be unnecessary. This is preferable because it allows for a simpler configuration.

[0218] Output devices include Blu-ray discs, DVDs (Digital Versatile Discs), Reproducing device or recording / reproducing device for storage media such as ile disk, flash memory, H DD (Hard Disk Drive), SSD (Solid State Drive) e) and other recording / playback devices equipped with storage devices such as the above. The stored image data is output to each display panel as an image signal. Output the image data acquired via the network to each display panel as an image signal It preferably has the function of doing so. By doing so, it becomes possible to easily display the latest information At this time, by adopting a configuration that enables temporary storage of data in the storage means of the output device it is preferable because images can be displayed even when not connected to the network (offline state).

[0219] Also, as the output device, it is preferable to use an uncompressed disk recorder (UDR) that can output high-definition images such as full high vision (1920×1080 pixels), 4K (3840×2160 pixels), or 8K (7680×4320 pixels) without compression

[0220] Furthermore, it is preferable that the output device has a function of dividing a certain image data into a plurality of image signals and outputting them By doing so, it becomes possible to display one large image in the display area of a display device composed of the display areas of a plurality of display panels. Also, since it is not necessary to divide the input image data in advance, it has excellent versatility

[0221] As described above, in one aspect of the present invention, it is possible to provide a display device or electronic device in which the area of the overlapping portion of two display panels is variable and the area of the display area is variable

[0222] This embodiment can be appropriately combined with other embodiments

[0223] (Embodiment 2) In this embodiment, an electronic device according to one aspect of the present invention will be described with reference to FIGS. 19 to 21 It is.

[0224] In Embodiment 1, an example of forming one large display area using a plurality of display panels will be described. However, one large display area may be formed using a plurality of electronic devices. For example, a plurality of portable information terminals or mobile phones may be used.

[0225] <Example 6 of Electronic Device> FIG. 19(A1) shows a front view of the electronic device 330, and FIG. 19(B) shows the back of the electronic device 330. FIG. Also, FIG. 19(A2) shows a cross-sectional view between the dashed lines D1 - D2 in FIG. 19(A1). is shown.

[0226] The electronic device 330 has a housing 331 and a display panel 100. Also, the electronic device 330 preferably has communication means. Examples of the communication means include a wireless module and an antenna, etc. Also, it may be possible to communicate wired using a connector or the like.

[0227] Furthermore, the electronic device 330 may have a speaker 332, cameras 333a, 333b, lights 334a, 334b, operation buttons 335, a battery 336, operation buttons 337, a microphone 338, and an external connection port 342, etc. Note that the electronic device 330 has cameras and lights on both the front and back sides, respectively, but one aspect of the present invention is not limited to this.

[0228] As shown in FIG. 19(A2), the electronic device 330 has a display panel 100. As the display panel 100, for example, the display panel shown in Embodiment 1 can be applied.

[0229] The display panel 100 has a display area 101 and an area 102 that is a non-display area.

[0230] A part of the area 102 that is a non-display area is an area 110 that transmits visible light. The electronic device 3 30 has a mechanism that can expose the area 110 that transmits visible light from the housing. Thus, the display part of another electronic device and the area 110 that transmits visible light can be overlapped. Then, by communicating with another electronic device using the communication means, the display area 101 and the display area of another electronic device can be used as one display area where the seam is difficult to be visually recognized. .

[0231] An example of the mechanism that can expose the area 110 that transmits visible light will be described with reference to FIGS. 19(C) to (F). FIGS. 19(C) to (F) are each an example of a cross-sectional view between the dashed-dotted lines D1 - D2 in FIG. 19(A1).

[0232] For example, as shown in FIG. 19(C), an area 339 that is a part of the housing 331 may be detachable. By removing the area 339, the area 110 that transmits visible light can be exposed. Also, not only the area 110 that transmits visible light but also a part of the display area 101 may be exposed.

[0233] Alternatively, as shown in FIG. 19(D), the area 339 may be rotatable. By rotating the area 339, the area 110 that transmits visible light can be exposed.

[0234] Note that, as shown in FIGS. 19(E) and (F), the area 110 that transmits visible light may be configured to be exposed only on the back side of the electronic device 3 30. For example, in the housing 331, the display panel Among the portions overlapping the display surface side of the panel 100, the region overlapping the region 110 that transmits visible light When visible light is transmitted, through the housing 331 and the region 110 that transmits visible light, the display of the display panel of other electronic devices can be visually recognized.

[0235] Also, FIG. 20(A1) shows a front view of the electronic device 340, and FIG. 20(B) shows a rear view of the electronic device 340. Further, FIG. 20(A2) shows a cross-sectional view between the dashed-dotted lines D3-D4 in FIG. 20(A1).

[0236] The electronic device 340 has a housing 331 and a display panel 100. Also, the electronic device 330 preferably has communication means. Examples of the communication means include a wireless module and an antenna, etc. Also, it may be possible to communicate wired using a connector or the like.

[0237] Furthermore, the electronic device 340 may have a speaker 332, a camera 333b, a light 334a, an operation button 335, a battery 336, an operation button 337, a microphone 338, and an external connection port 342, etc.

[0238] As shown in FIG. 20(A2), the electronic device 340 has a display panel 100. As the display panel 100, for example, the display panel shown in Embodiment 1 can be applied.

[0239] The display panel 100 has a display region 101 and a region 102 that is a non-display region.

[0240] A part of the region 102 that is a non-display region is the region 110 that transmits visible light. The electronic device 340 has a mechanism that can expose the region 110 that transmits visible light from the housing. ​​​​​​​​Thus, the display unit of another electronic device can be overlapped with the region 110 that transmits visible light. In addition, the electronic device 340 has a mechanism that can expose a part of the display region 101 from the housing. Thus, the region of another electronic device that transmits visible light can be overlapped with the display region 101.

[0241] Then, by communicating with another electronic device using the communication means, the display region 101 and the display region of another electronic device can be used as one display region where the seam is difficult to be visually recognized.

[0242] An example of the mechanism that can expose the region 110 that transmits visible light and the display region 101 will be described with reference to FIGS. 20(C) to (F). FIGS. 20(C) to (F) are each an example of a cross-sectional view between the dashed-dotted lines D3 - D4 in FIG. 20(A1). For example, as shown in FIG. 20(C), the regions 339a and 339b, which are each part of the housing 331, may be detachable. By removing the regions 339a and 339b, the region 110 that transmits visible light can be exposed from one side of the display surface of the electronic device 340, and the display region 101 can be exposed from the opposite side.

[0243] Or, as shown in FIG. 20(D), the regions 339a and 339b may be rotatable. By rotating the regions 339a and 339b, the region 110 that transmits visible light and the display region 101 can be exposed.

[0244] Note that, as shown in FIG. 20(E), the region 110 that transmits visible light may be configured to be exposed only on the back side of the electronic device 340. For example, in the housing 331, the display panel 10

[0245] ​​​​​​​​​​ Among the portions overlapping the display surface side of 0, the region overlapping the visible light transmitting region 110 allows visible light to be transmitted. In this case, through the housing 331 and the visible light transmitting region 110, the display of the display panel of another electronic device can be visually recognized.

[0246] Also, as shown in Fig. 20(E), the display region 101 may be configured to be exposed only on the front side of the electronic device 340. In the region 339b, among the portions overlapping the display surface side of the display panel 100, the portion overlapping the display region 101 transmits visible light. Therefore, without removing or rotating the region 339b, the display of the display region 101 can be visually recognized through the visible light transmitting region of another electronic device and the region 339b. However, a step may occur between the display region 101 and the display region of another electronic device, making the joint easily visible and potentially degrading the display quality. Therefore, it is preferable that the distance in the thickness direction between the display region 101 and the display region of another electronic device is as small as possible. Also, as shown in Fig. 20(F), the mechanisms for exposing the visible light transmitting region 110 or the display region 101 in the regions 339a and 339b may have different configurations from each other.

[0247] Fig. 21(A) shows an example of forming one display region using three electronic devices 340. Fig. 2 1(B) is a cross-sectional view taken along the dashed line D5 - D6 in Fig. 21(A).

[0248] By using electronic devices that can expose the visible light transmitting region 110 from one side of the display surface and the display region 1 01 from the opposite side, respectively, a wide display region can be formed without restrictions.

[0249] ​​​​​ Specifically, for two adjacent electronic devices, the upper electronic device The area 110 of the electronic device that transmits visible light is overlapped on the display area 101 of the electronic device below. By doing so, the entire display of the display area 101 of the lower electronic device can be seen. The seam between the display area of the upper electronic device and the display area of the lower electronic device is not visible. The display areas of the upper and lower electronic devices can be combined into one display area. It can be used as follows.

[0250] As shown in FIG. 21(C), the electronic device located at the top has an area that transmits visible light. The display area 101 can be exposed only through the mechanism that can expose the display area 110. The electronic device located at the bottom may not have a mechanism for displaying the display area 101. 100, and only the area 110 that transmits visible light can be exposed. It is not necessary for the device to have a mechanism for doing so.

[0251] In this embodiment, a mechanism that can expose the region 110 that transmits visible light, The display area 101 is exposed by a mechanism that is attached to the opposite sides of the display surface of the electronic device. However, one embodiment of the present invention is not limited to this. One mechanism may be located on the short side of the display surface of the container, and the other mechanism may be located on the long side.

[0252] In addition, a mechanism is provided that can expose the visible light transmitting area 110 and the display area 101. Specifically, as shown in FIG. 21(D), the upper electronic device may be stacked. Through the visible light transmitting area 110 and the visible light transmitting housing 349 of the child device, It may be possible to visually recognize the display area 101 of the lower electronic device.

[0253] In the electronic device of the present embodiment, the display panel preferably has flexibility. Also, the display panel may have a curved surface.

[0254] As described above, the electronic device of the present embodiment can be used alone and can also be used as part of an electronic device having a wider display area by overlapping it with other electronic devices. It can be.

[0255] The present embodiment can be appropriately combined with other embodiments.

[0256] (Embodiment 3) In the present embodiment, a usage example of the display device and the electronic device according to one aspect of the present invention will be described with reference to FIG. 22. It will be described.

[0257] The display device or the electronic device according to one aspect of the present invention has characteristics of being flexible, thin, and lightweight. Therefore, as shown in FIGS. 22(A) to (D), it can be attached to clothes and used. It can be used.

[0258] There is no particular limitation on the position where the device 81 is attached. For example, the front body, the back body, the collar, the sleeves, or the hood can be mentioned.

[0259] Also, there is no limitation on the clothes to which it is attached. For example, tops such as shirts and blouses, bottoms such as trousers and skirts, or one-piece dresses, jumpsuits, etc. can be mentioned. Also, it may be attached to a scarf or a necktie, etc.

[0260] In FIG. 22(A), it is the front body of a shirt, and in FIG. 22(B), it is the front body of a polo shirt. In FIG. 22(C ) In the case of the shirt collar and sleeves, in Fig. 22(D), the back body and hood of the top, and the bottom Examples are shown where the device 81 is attached to each of them.

[0261] The device 81 may be detachably attached to the clothing. For example, when the device 81 may be damaged by washing, it is preferably removable from the clothing.

[0262] The device 81 may be, for example, a display device with a variable display area size as exemplified in Embodiment 1, or a device having a function capable of executing at least any one of various applications such as mobile phones, e-mails, text viewing and creation, Internet communications, computer games, etc. as exemplified in Embodiment 2, and an electronic device capable of touch operation may be applied. Also, the device 81 may be a lighting fixture, and may be used, for example, for crime prevention purposes.

[0263] Moreover, since the electronic device or lighting device according to one aspect of the present invention has flexibility, it can also be incorporated along the inner wall or outer wall of a house or building, or the curved surface of the interior or exterior of an automobile.

[0264] By increasing the number of display panels, the display device or electronic device according to one aspect of the present invention can increase the area of the display region without an upper limit. Therefore, the display device or electronic device according to one aspect of the present invention can be suitably used for digital signage, PID, etc. Also, by changing the arrangement method of the display panels, the display device or electronic device according to one aspect of the present invention can make the outer shape of the display region into various shapes.

[0265] ​​​​In Fig. 22(E), an example in which the device 81 is applied to the column 85 and the wall 86 is shown. By using a flexible display panel as the display panel used for the device 81, it becomes possible to install the device 81 along a curved surface.

[0266] Here, in particular, when using the display device or electronic device of one aspect of the present invention for digital signage or PID, by applying a touch panel to the display panel, not only can an image (still image, video, etc.) be displayed in the display area, but it is also preferable because an observer can intuitively operate it. In addition, when used for applications such as providing route information or traffic information, the usability can be improved by intuitive operation. Note that when installing on a wall surface of a building or a public facility, etc., it is not necessary to apply a touch panel to the display panel.

[0267] This embodiment can be appropriately combined with other embodiments.

[0268] (Embodiment 4) In this embodiment, an example of the lamination of two display panels will be described with reference to Figs. 23 and 24.

[0269] Figs. 23 and 24 are each an example of a cross-sectional view when two display panels are laminated.

[0270] In each of Figs. 23(A) to (E), the lower display panel has a display area 101a, a region 110a that transmits visible light, and a region 120a that blocks visible light. An FPC 112a is electrically connected to the lower display panel. The upper (display surface side) display panel has a display area 101b, a region 110b that transmits visible light, and a region 120b that blocks visible light. ​​​​​​​。The FPC112b is electrically connected to the upper display panel.

[0271] In Fig. 23(A), an example is shown in which the FPC112a is connected to the display surface (front surface) side of the lower display panel, and the FPC112b is connected to the display surface side of the upper display panel. 。

[0272] Here, if air exists between the region transmitting visible light of the upper display panel and the display region of the lower display panel, a part of the light extracted from the display region is reflected at the interface between the display region and the atmosphere, and at the interface between the atmosphere and the region transmitting visible light, respectively, which may cause a decrease in the display brightness. As a result, the light extraction efficiency in the region where the plurality of display panels overlap decreases. In addition, a difference may occur in the brightness of the display region of the lower display panel between the portion that overlaps with the region transmitting visible light of the upper display panel and the portion that does not overlap, and the seam of the display panel may be easily recognized by the user. 。 。 。 。 。 。 。

[0273] Therefore, as shown in Fig. 23(B), it is preferable that the display device has a light-transmitting layer 103 having a refractive index higher than that of air and transmitting visible light between the display region and the region transmitting visible light. 。 Thereby, it is possible to suppress the entry of air between the display region and the region transmitting visible light, and it is possible to reduce the reflection at the interface due to the difference in refractive index. And it is possible to suppress display unevenness or brightness unevenness in the display device. 。 。

[0274] Note that, the higher the transmittance of visible light of the light-transmitting layer, the higher the light extraction efficiency of the display device, which is preferable. For example, in the light-transmitting layer, light in the range of 450 nm or more and 700 nm or less in wavelength 。 The average value of the transmittance is preferably 80% or more, more preferably 90% or more.

[0275] Further, the smaller the difference in refractive index between the light-transmitting layer and the layer in contact with the light-transmitting layer, the more effectively light reflection can be suppressed, which is preferable. For example, the refractive index of the light-transmitting layer is higher than that of air and is preferably 1.3 or more and 1.8 or less. The difference in refractive index between the light-transmitting layer and the layer in contact with the light-transmitting layer (for example, the substrate constituting the display panel) is preferably 0.30 or less, more preferably 0.20 or less, and even more preferably 0.15 or less.

[0276] The light-transmitting layer is preferably detachably in contact with at least one of the lower display panel and the upper display panel. For example, when folding the electronic device according to one aspect of the present invention, the light-transmitting layer can be peeled off from the lower display panel or the upper display panel, and then when pulling out the display panel from the electronic device, it is preferable that both the lower display panel and the upper display panel can be bonded together again. When the display panel does not need to be detachable, the display panels may be fixed using a material having adhesiveness (such as an adhesive) for the light-transmitting layer.

[0277] In addition, when the display panel does not need to be detachable, the display panels may be fixed using a material having adhesiveness (such as an adhesive) for the light-transmitting layer.

[0278] Either an inorganic material or an organic material can be used for the light-transmitting layer. A liquid substance, a gel substance, or a solid substance can be used for the light-transmitting layer.

[0279] For example, liquid substances such as water, an aqueous solution, a fluorine-based inert liquid, a refractive liquid, and silicone oil can be used for the light-transmitting layer.

[0280] When the display device is disposed with an inclination to a horizontal plane (a plane perpendicular to the direction in which gravity acts), or with a​​​ In the case of arranging it vertically or the like, the viscosity of the liquid substance is preferably 1 mPa·s or more, more preferably 1 Pa·s or more, still more preferably 10 Pa·s or more, and particularly preferably 100 Pa ·s or more. However, it is not limited to this in the case of arranging the display device parallel to the horizontal plane, etc. etc.

[0281] If the light-transmitting layer is inert, it is preferable to suppress damage to other layers constituting the display device. etc.

[0282] The material contained in the light-transmitting layer is preferably non-volatile. Thereby, it is possible to suppress air from entering the interface due to the volatilization of the material used in the light-transmitting layer. etc.

[0283] Also, a polymer material can be used for the light-transmitting layer. For example, epoxy resin, acrylic resin, silicone resin, phenol resin, polyimide resin, imide resin, PVC (polyvinyl chloride) resin, PVB (polyvinyl butyral) resin, EVA (ethylene vinyl a cetate) resin, etc. Also, a two-component mixed resin may be used. Any one or more of these resins, various curable adhesives such as ultraviolet curable type light-curable adhesives, reaction curable adhesives, heat curable adhesives, anaerobic adhesives, or adhesive sheets, etc. may be used. When it is not desired to fix the display panels to each other, etc., the adhesive may not be cured.

[0284] The light-transmitting layer is preferably a layer with high self-adsorbability to the adherend. Also, the light-transmitting layer is preferably a layer with high peelability from the adherend. After peeling off the light-transmitting layer attached to the display panel, it is preferable that it can be bonded to the display panel again. etc. etc.

[0285] Further, it is preferable that the light-transmitting layer has no adhesiveness or has low adhesiveness. Thereby, the adherend is not damaged or soiled on its surface, and the adsorption of the light-transmitting layer to the adherend and the removal of the light-transmitting layer from the adherend can be repeated.

[0286] For the light-transmitting layer, for example, a film having adsorptivity or a film having adhesiveness can be used. In addition, when using an adsorption film having a laminated structure of an adsorption layer or an adhesive layer and a base material, the adsorption layer or the adhesive layer may function as the light-transmitting layer in the display device, and the base material may function as the substrate constituting the display panel. Note that the display device may have a substrate separately from the base material of the adsorption film. The adsorption film may have an anchor layer between the adsorption layer or the adhesive layer and the base material. The anchor layer has a function of improving the adhesive force between the adsorption layer or the adhesive layer and the base material. In addition, the anchor layer has a function of smoothing the coating surface of the adsorption layer or the adhesive layer of the base material. Thereby, it is possible to make it difficult to generate bubbles between the adherend and the light-transmitting layer.

[0287] For example, for the display device, a film in which a silicone resin layer and a polyester film are laminated can be preferably used. At this time, the silicone resin layer has adsorptivity and functions as the light-transmitting layer. In addition, the polyester film functions as the substrate constituting the display panel. Note that a substrate constituting the display panel may be provided separately from the polyester film.

[0288] In addition, when using a film in which an adsorption layer, a base material, and an adhesive layer or an adhesive layer are laminated, the adsorption layer functions as the light-transmitting layer in the display device, and the base material functions as the substrate constituting the display panel. ​functions as, and the adhesive layer or bonding layer is a layer that bonds the element layer of the display panel and the substrate and may function as such.

[0289] There is no particular limitation on the thickness of the light-transmitting layer. For example, it may be 1 μm or more and 50 μm or less. The light-transmitting layer may be thicker than 50 μm, but when manufacturing a flexible display device, it is preferably set to a thickness that does not impair the flexibility of the display device. For example, the thickness of the light-transmitting layer is preferably 10 μm or more and 30 μm or less. Also, the thickness of the light-transmitting layer may be less than 1 μm as well.

[0290] The display area 101a overlaps with the area 110b that transmits visible light through the light-transmitting layer 103. Therefore, it is possible to suppress air from entering between the display area 101a and the area 110b that transmits visible light, and it is possible to reduce reflection at the interface due to the difference in refractive index.

[0291] As a result, it is possible to suppress a difference in luminance in the display area 101a between the portion that overlaps with the area 110b that transmits visible light and the portion that does not overlap, making it difficult for the user of the display device to recognize the seam of the display panel. Also, it is possible to suppress display unevenness or luminance unevenness in the display device.

[0292] The area 120a that blocks visible light and the FPC 112a each overlap with the display area 101b. Therefore, it is possible to sufficiently secure the area of the non-display area and to increase the size of the seamless display area, realizing a large-sized display device with high reliability.

[0293] In FIG. 23(C), the FPC 112a is on the surface (back surface) opposite to the display surface of the lower display panel ​​​​​​is connected to the side, and FPC112b is on the side opposite to the display surface of the upper display panel (the back surface) side An example of the connection is shown.

[0294] As shown in FIG. 23(C), the light-transmitting layer 103 may be provided even between the region 120a that blocks visible light of the lower display panel and the display region 101b of the upper display panel. 0a and the display region 101b of the upper display panel.

[0295] By adopting a configuration in which the FPC is connected to the back surface side of the display panel, the end portion of the lower display panel can be attached to the back surface of the upper display panel, so that the adhesive area between them can be increased and the mechanical strength of the bonded portion can be enhanced.

[0296] As shown in FIG. 23(D), the region of the display region 101a that does not overlap with the upper display panel and the light-transmitting layer 103 may overlap. Further, the region 110a that transmits visible light and the light-transmitting layer 103 may overlap.

[0297] Also, as shown in FIG. 23(E), the region of the upper display panel that does not overlap with the display region 101a and the light-transmitting layer 103 may overlap.

[0298] Also, for example, as shown in FIG. 24(A), the lower display panel has a substrate 151a, a substrate 1 52a, and an element layer 153a, and the upper display panel may have a substrate 151b, a substrate 152b, and an element layer 153b.

[0299] The element layer 153a has a region 155a including display elements and a region 156a including wirings electrically connected to the display elements. The wirings included in the region 156a are electrically connected to the FPC112a. continued.

[0300] Similarly, the element layer 153b of the upper display panel includes a region 155b including a display element, a display The region 156b includes wiring electrically connected to the element. is electrically connected to the FPC 112b.

[0301] The light-transmitting layer 103a is provided on the substrate 152a. The laminated structure of the substrate 152a and the light-transmitting layer 103a is formed by using an adhesive film having the laminated structure. The substrate 152b and the light-transmitting layer 103b can also be configured in the same manner. Cut.

[0302] Depending on the material of the light-transmitting layer, fine particles such as dust in the air may be absorbed. In such a case, the area of the display area 101a that does not overlap with the upper display panel may be It is preferable that the light-transmitting layer 103 does not overlap with the light-transmitting layer 103. As a result, the display on the display device can be prevented from becoming unclear.

[0303] As shown in FIG. 24(B), a light-transmitting layer 103a may be provided in contact with the substrate 151a. For example, the substrate 1 may be formed by using the adsorption film having the adsorption layer and the substrate laminated together. The substrate 151b and the light-transmitting layer 103a can be laminated together. 103b can also have a similar configuration.

[0304] In the configuration of FIG. 24(B), the light-transmitting layer is not positioned on the outermost surface of the display surface side of the display device. This can prevent the display of the display device from becoming unclear due to dust or the like adhering to the layer 103. In addition, if an adhesive light-transmitting layer is placed on the back surface of the display device, the surface that is not in contact with the display panel can be easily It can be detachably attached to a desired position using [device name].

[0305] This embodiment can be appropriately combined with other embodiments.

[0306] (Embodiment 5) In this embodiment, a light-emitting panel, which is an example of a display panel, will be described with reference to the drawings.

[0307] In this embodiment, a light-emitting panel mainly using organic EL elements will be exemplified, but the panel that can be used in one aspect of the display device or electronic device of the present invention is not limited to this.

[0308] <Specific Example 1> Fig. 25(A) shows a plan view of the light-emitting panel, and Fig. 25(C) shows an example of a cross-sectional view between the dashed-dotted lines A1 - A2 in Fig. 25(A). Fig. 25(C) also shows an example of a cross-sectional view of the region 110 that transmits visible light. The light-emitting panel shown in Specific Example 1 is a top emission type light-emitting panel using the color filter method. In this embodiment, the light-emitting panel has a configuration, for example, in which one color is represented by three sub-pixels of R (red), G (green), and B (blue), a configuration in which one color is represented by four sub-pixels of R, G, B, and W (white), or a configuration in which one color is represented by four sub-pixels of R, G, B, and Y (yellow). There is no particular limitation on the color elements, and colors other than RGB WY may be used, for example, cyan or magenta may be used. (white), or a configuration in which one color is represented by four sub-pixels of R, G, B, and Y (yellow). There is no particular limitation on the color elements, and colors other than RGB WY may be used, for example, cyan or magenta may be used. WY may be used, for example, cyan or magenta may be used.

[0309] The light-emitting panel shown in Fig. 25(A) has a visible light transmitting region 110, a light-emitting portion 804, a driving circuit portion 806, and an FPC 808. The visible light transmitting region 110 is adjacent to the light-emitting portion 804 and is arranged along two sides of the light-emitting portion 804. and is arranged along two sides of the light-emitting portion 804.

[0310] The light-emitting panel shown in Fig. 25(C) includes a substrate 701, an adhesive layer 703, an insulating layer 705, a plurality of transistors, a conductive layer 857, an insulating layer 815, an insulating layer 817, a plurality of light-emitting elements, an insulating layer 82 1, an adhesive layer 822, a coloring layer 845, a light-shielding layer 847, an insulating layer 715, an adhesive layer 713, and a base plate 711. The adhesive layer 822, the insulating layer 715, the adhesive layer 713, and the substrate 711 transmit visible light. The light-emitting elements and transistors included in the light-emitting section 804 and the drive circuit section 806 are encapsulated by the substrate 701, the substrate 711, and the adhesive layer 822.

[0311] The light-emitting section 804 has a transistor 820 and a light-emitting element 830 on the substrate 701 via the adhesive layer 703 and the insulating layer 705. The light-emitting element 830 has a lower electrode 83 1 on the insulating layer 817, an EL layer 833 on the lower electrode 831, and an upper electrode 835 on the EL layer 833. The lower electrode 831 is electrically connected to the source electrode or the drain electrode of the transistor 820. The end of the lower electrode 831 is covered with the insulating layer 821. The lower electrode 831 preferably reflects visible light. The upper electrode 835 transmits visible light.

[0312] Further, the light-emitting section 804 has a coloring layer 845 overlapping the light-emitting element 830 and a light-shielding layer 847 overlapping the insulating layer 821. The space between the light-emitting element 830 and the coloring layer 845 is filled with the adhesive layer 822.

[0313] The insulating layer 815 has the effect of suppressing the diffusion of impurities into the semiconductor constituting the transistor. Also, it is preferable to select an insulating layer having a planarizing function for reducing surface irregularities caused by the transistor as the insulating layer 817.

[0314] The drive circuit unit 806 has a plurality of transistors on the substrate 701 via the adhesive layer 703 and the insulating layer 705. In FIG. 25(C), one of the transistors included in the drive circuit unit 806 is shown.

[0315] The insulating layer 705 and the substrate 701 are bonded together by the adhesive layer 703. Also, the insulating layer 7 15 and the substrate 711 are bonded together by the adhesive layer 713. When using a film with high moisture resistance for at least one of the insulating layer 705 and the insulating layer 715, it is possible to prevent impurities such as water from entering the light-emitting element 830 and the transistor 820, and the reliability of the light-emitting panel is improved, which is preferable. Therefore, it is preferable.

[0316] The conductive layer 857 is electrically connected to an external input terminal that transmits an external signal (such as a video signal, a clock signal, a start signal, or a reset signal) or a potential to the drive circuit unit 806. Here an example of providing the FPC 808 as an external input terminal is shown. To prevent an increase in the number of processes it is preferable that the conductive layer 857 is formed of the same material and in the same process as the electrodes and wirings used in the light-emitting portion and the drive circuit unit. Here, an example of forming the conductive layer 857 of the same material and in the same process as the electrodes constituting the transistor 820 is shown.

[0317] In the light-emitting panel shown in FIG. 25(C), the FPC 808 is located on the substrate 711. The connector 8 25 is connected to the conductive layer 857 through an opening provided in the substrate 711, the adhesive layer 713, the insulating layer 715, the adhesive layer 822, the insulating layer 817, and the insulating layer 815. Also, the connector 82 5 is connected to the FPC 808. The FPC 808 and the conductive layer 857 are electrically connected through the connector 825. When the conductive layer 857 and the substrate 711 overlap, the substrate 711 is provided with an opening​​ By using this (or a substrate having an opening), the conductive layer 857, the connector 825, and the FPC 808 can be electrically connected.

[0318] Fig. 26 shows an example of a cross-sectional view of a display device having two stacked light-emitting panels shown in Fig. 25(B). In Fig. 26, the display area 101a (corresponding to the light-emitting part 804 shown in Fig. 25(B)) and the area 120a (corresponding to the drive circuit part 806 etc. shown in Fig. 25(B)) that blocks visible light of the lower light-emitting panel, as well as the display area 101b (corresponding to the light-emitting part 804 shown in Fig. 25(B)) and the area 110b (corresponding to the area 110 that transmits visible light shown in Fig. 25(B)) that transmits visible light of the upper light-emitting panel are shown.

[0319] In the display device shown in Fig. 26, the light-emitting panel located on the display surface side (upper side) has an area 110b that transmits visible light adjacent to the display area 101b. The display area 101a of the lower light-emitting panel overlaps with the area 110b that transmits visible light of the upper light-emitting panel. Thus, it is possible to reduce, and even eliminate, the non-display area between the display areas of the two stacked light-emitting panels. As a result, it is possible to realize a large-sized display device in which the seam of the light-emitting panel is difficult for the user to recognize.

[0320] Also, the display device shown in Fig. 26 has a light-transmitting layer 103 that has a refractive index higher than that of air and transmits visible light between the display area 101a and the area 110b that transmits visible light. Thereby, it is possible to suppress air from entering between the display area 101a and the area 110b that transmits visible light, and it is possible to reduce reflection at the interface due to the difference in refractive index, and it is possible to suppress display unevenness or brightness unevenness in the display device. ​​​​​​​​​​​​​​

[0321] The light-transmitting layer 103 may overlap the entire surface of the substrate 711 of the lower light-emitting panel or the substrate 701 of the upper light-emitting panel, or may overlap with the display area 101a and the area 110b that transmits visible light. Also, the substrate 711 or the light-transmitting layer 103 may be included in the area 120a that blocks visible light. For example, an adsorption film having an adsorption layer and a base material laminated thereon can be used to form the laminated structure of the substrate 701 and the light-transmitting layer 103 of the upper light-emitting panel.

[0322]

[0323] <Specific Example 2> FIG. 25(B) shows a plan view of the light-emitting panel, and FIG. 27(A) shows an example of a cross-sectional view between the dashed-dotted lines A3-A4 in FIG. 25(B). The light-emitting panel shown in Specific Example 2 is a top-emission type light-emitting panel using a color filter method, which is different from Specific Example 1. Here, only the points different from Specific Example 1 will be described in detail, and the points common to Specific Example 1 will be omitted from the description.

[0324] In FIG. 25(B), an example having an area 110 that transmits visible light over three sides of the light-emitting panel is shown. Among them, on two sides, the area 110 that transmits visible light is adjacent to the light-emitting portion 804.

[0325] The light-emitting panel shown in FIG. 27(A) is different from the light-emitting panel shown in FIG. 25(C) in the following points.

[0326] The light-emitting panel shown in FIG. 27(A) has an insulating layer 817a and an insulating layer 817b, and has a conductive layer 856 on the insulating layer 817a. The source electrode or drain electrode of the transistor 820 and the lower electrode of the light-emitting element 830 are electrically connected via the conductive layer 856. ​​​​​​​​​​​

[0327] The light-emitting panel shown in FIG. 27A has spacers 823 on an insulating layer 821. By providing 823, the distance between the substrate 701 and the substrate 711 can be adjusted.

[0328] The light-emitting panel shown in FIG. 27(A) has an overcoat that covers the colored layer 845 and the light-shielding layer 847. The space between the light emitting element 830 and the overcoat 849 is filled with an adhesive layer 822. are.

[0329] In addition, in the light-emitting panel shown in FIG. 27(A), the substrate 701 and the substrate 711 are different in size. The FPC 808 is located on the insulating layer 715 and does not overlap the substrate 711. The insulating layer 817a, the insulating layer 817b, and the insulating layer 815 are provided with the edge layer 715, the adhesive layer 822, the insulating layer 817a, the insulating layer 817b, and the insulating layer 815. The conductive layer 857 is connected to the substrate 711 through the opening. Therefore, the material of the substrate 711 is not limited.

[0330] As shown in FIG. 27(B), the light emitting element 830 is made up of a lower electrode 831 and an EL layer 833. The optical adjustment layer 832 may be formed between the first and second layers. The optical adjustment layer 832 may include a light-transmitting conductive layer. It is preferable to use conductive materials. Color filter (colored layer) and microcavity structure By combining with the (optical adjustment layer), the display device according to one embodiment of the present invention can exhibit high color purity. The thickness of the optical adjustment layer is changed depending on the emission color of each sub-pixel. .

[0331] <Example 3> FIG. 25(B) shows a plan view of the light-emitting panel, and the area between the dashed dotted lines A3-A4 in FIG. 25(B) An example of a cross-sectional view is shown in FIG. 27(C). The light-emitting panel shown in Example 3 uses a color-coded method. It is a top emission type light emitting panel that has been formed.

[0332] The light emitting panel shown in Fig. 27(C) includes a substrate 701, an adhesive layer 703, an insulating layer 705, a plurality of transistors, a conductive layer 857, an insulating layer 815, an insulating layer 817, a plurality of light emitting elements, an insulating layer 82 1, a spacer 823, an adhesive layer 822, and a substrate 711. The adhesive layer 822 and the substrate 7 11 transmit visible light.

[0333] In the light emitting panel shown in Fig. 27(C), a connector 825 is located on the insulating layer 815. The connector 825 is connected to the conductive layer 857 through an opening provided in the insulating layer 815. Also, the connector 825 is connected to an FPC 808. The FPC 808 and the conductive layer 857 are electrically connected through the connector 825.

[0334] <Specific Example 4> Fig. 25(B) shows a plan view of the light emitting panel, and Fig. 28(A) shows an example of a cross-sectional view between the dashed-dotted lines A3 - A4 in Fig. 25(B). The light emitting panel shown in Specific Example 4 is a bottom emission type light emitting panel using a color filter method.

[0335] The light emitting panel shown in Fig. 28(A) includes a substrate 701, an adhesive layer 703, an insulating layer 705, a plurality of transistors, a conductive layer 857, an insulating layer 815, a colored layer 845, an insulating layer 817a, an insulating layer 81 7b, a conductive layer 856, a plurality of light emitting elements, an insulating layer 821, an adhesive layer 822, and a substrate 711. The substrate 701, the adhesive layer 703, the insulating layer 705, the insulating layer 815, the insulating layer 817a, and the insulating layer 817b transmit visible light.

[0336] The light emitting portion 804 is formed on the substrate 701 through the adhesive layer 703 and the insulating layer 705 with transistors ​​It includes a transistor 820, a transistor 824, and a light-emitting element 830. The light-emitting element 830 has a lower electrode 831 on an insulating layer 817, an EL layer 833 on the lower electrode 831, and an upper electrode 835 on the EL layer 833. The lower electrode 831 is electrically connected to the source electrode or the drain electrode of the transistor 820. The end of the lower electrode 831 is covered with the insulating layer 821 . The upper electrode 835 preferably reflects visible light. The lower electrode 831 transmits visible light . The position where the coloring layer 845 overlapping the light-emitting element 830 is provided is not particularly limited. For example, it can be provided between the insulating layer 817a and the insulating layer 817b, or between the insulating layer 815 and the insulating layer 817a, etc.

[0337] The driving circuit unit 806 has a plurality of transistors on the substrate 701 via an adhesive layer 703 and an insulating layer 705. In FIG. 28(A), two of the transistors included in the driving circuit unit 806 are shown.

[0338] The insulating layer 705 and the substrate 701 are bonded together by the adhesive layer 703. Using a film with high moisture resistance for the insulating layer 705 can suppress the intrusion of impurities such as water into the light-emitting element 830, the transistor 820, and the transistor 8 24, and is preferable because the reliability of the light-emitting panel is improved. [[ID=�4]]

[0339] The conductive layer 857 is electrically connected to an external input terminal that transmits an external signal or potential to the driving circuit unit 806. Here, an example in which an FPC 808 is provided as the external input terminal is shown. Also, here, an example in which the conductive layer 857 is manufactured using the same material and the same process as the conductive layer 856 is shown.

[0340] <Specific Example 5> FIG. 28(B) shows an example of a light-emitting panel different from Specific Examples 1 to 4.

[0341] The light-emitting panel shown in FIG. 28(B) includes a substrate 701, an adhesive layer 703, an insulating layer 705, a conductive layer 8 14, a conductive layer 857a, a conductive layer 857b, a light-emitting element 830, an insulating layer 821, and an adhesive layer 822 , and a substrate 711.

[0342] The conductive layer 857a and the conductive layer 857b are external connection electrodes of the light-emitting panel and can be electrically connected to an FPC or the like.

[0343] The light-emitting element 830 includes a lower electrode 831, an EL layer 833, and an upper electrode 835. The end of the lower electrode 831 is covered with the insulating layer 821. The light-emitting element 830 is of a bottom emission type, a top emission type, or a dual emission type. The electrode, the substrate, the insulating layer, etc. on the side where light is extracted are each transmissive to visible light. The conductive layer 814 is electrically connected to the lower electrode 831.

[0344] The substrate on the side where light is extracted may have, as a light extraction structure, a hemispherical lens, a microlens array, a film with an uneven structure, a light diffusion film, etc. For example, by adhering the above lens or film onto a resin substrate using an adhesive or the like having the same refractive index as the substrate or the lens or film, a substrate having a light extraction structure can be formed.

[0345] The conductive layer 814 is not necessarily provided, but it is preferably provided because it can suppress the voltage drop caused by the resistance of the lower electrode 831. Also, for the same purpose, a conductive layer that is electrically connected to the upper electrode 835 is provided on the insulating layer 821, on the EL layer 833, or on the upper electrode 835, etc.​​​​ It may be possible.

[0346] The conductive layer 814 can be formed of a single layer or by lamination using a material selected from copper, titanium, tantalum, tungsten, molybdenum, chromium, neodymium , scandium, nickel, aluminum, or an alloy material having these as a main component. The film thickness of the conductive layer 814 can be, for example, 0.1 μm or more and 3 μm or less, and preferably 0.1 μm or more and 0. 5 μm or less.

[0347] <Example of material> Next, materials that can be used for the light-emitting panel will be described. Note that the description of the configurations described above in this specification may be omitted.

[0348] For the substrate, materials such as glass, quartz, organic resin, metal, and alloy can be used. The substrate on the side where light is extracted from the light-emitting element uses a material that transmits the light.

[0349] In particular, it is preferable to use a flexible substrate. For example, an organic resin, or glass, metal, or alloy having a thickness that provides flexibility can be used.

[0350] Since the specific gravity of the organic resin is smaller than that of glass, using an organic resin as the flexible substrate can reduce the weight of the light-emitting panel compared to using glass, which is preferable.

[0351] It is preferable to use a material with high toughness for the substrate. This can realize a light-emitting panel with excellent impact resistance and low breakage. For example, by using an organic resin substrate, or a thin metal substrate or alloy substrate, a lighter and less breakable light-emitting panel can be realized compared to using a glass substrate.

[0352] Metal materials and alloy materials each have high thermal conductivity and can easily conduct heat throughout the substrate. Therefore, it is possible to suppress local temperature rise of the light-emitting panel, which is preferable. The thickness of the substrate using a metal material or an alloy material is preferably 10 μm or more and 200 μm or less, and more preferably 20 μm or more and 5 0 μm or less.

[0353] The material constituting the metal substrate or alloy substrate is not particularly limited. For example, aluminum , copper, nickel, or an alloy of a metal such as an aluminum alloy or stainless steel can be preferably used.

[0354] In addition, when a material with a high emissivity is used for the substrate, it is possible to suppress the increase in the surface temperature of the light-emitting panel, and it is possible to suppress the destruction and the decrease in reliability of the light-emitting panel. For example, the substrate may be a laminated structure of a metal substrate and a layer with a high emissivity (for example, a metal oxide or a ceramic material can be used).

[0355] Examples of the material having flexibility and translucency include the material of the protective substrate 13 2 exemplified in Embodiment 1.

[0356] As the flexible substrate, a layer using the above material may be laminated with a hard coat layer (for example, a silicon nitride layer) that protects the surface of the device from scratches, or a layer made of a material capable of dispersing pressure (for example, an aramid resin layer).

[0357] The flexible substrate can also be used by laminating a plurality of layers. In particular, when it has a configuration including a glass layer, the barrier property against water or oxygen can be improved, and a highly reliable light-emitting panel can be obtained.

[0358] For example, a flexible substrate in which a glass layer, an adhesive layer, and an organic resin layer are laminated from the side closer to the light emitting element. The thickness of the glass layer is preferably 20 μm or more and 200 μm or less. The thickness of the glass layer is 25 μm or more and 100 μm or less. A glass layer with such a thickness is highly resistant to water and oxygen. The thickness of the organic resin layer can be set to 1. The thickness is 0 μm or more and 200 μm or less, preferably 20 μm or more and 50 μm or less. By providing a resin layer, breakage or cracking of the glass layer is suppressed and mechanical strength is improved. By applying such a composite material of glass material and organic resin to a substrate, This makes it possible to provide a highly reliable and flexible light-emitting panel.

[0359] The adhesive layer can be made of a variety of adhesives, including UV-curable and other light-curable adhesives, reactive-curable adhesives, heat-curable adhesives, and adhesives containing Various curing adhesives such as epoxy adhesives can be used. Resin, acrylic resin, silicone resin, phenolic resin, polyimide resin, imide resin , PVC (Polyvinyl chloride) resin, PVB (Polyvinyl butyral) resin, EVA ( Ethylene vinyl acetate resins are examples. In particular, epoxy resins have low moisture permeability. A two-component resin may also be used. Good too.

[0360] The resin may also contain a desiccant. For example, an alkaline earth metal oxide (oxide Use a substance that absorbs moisture by chemical adsorption, such as calcium or barium oxide. Alternatively, materials such as zeolite or silica gel can absorb moisture by physical adsorption. A substance for adsorption may be used. If a desiccant is included, impurities such as moisture can be prevented from invading the functional element, which is preferable because the reliability of the light-emitting panel is improved.

[0361] Also, by mixing a filler or a light-scattering member having a high refractive index into the resin, the light extraction efficiency from the light-emitting element can be improved. For example, titanium oxide, barium oxide, zeolite, zirconium, etc. can be used.

[0362] As the insulating layer 705 and the insulating layer 715, it is preferable to use an insulating film having high moisture resistance respectively. Alternatively, it is preferable that the insulating layer 705 and the insulating layer 715 each have a function of preventing the diffusion of impurities into the light-emitting element.

[0363] Examples of the insulating film having high moisture resistance include films containing nitrogen and silicon such as a silicon nitride film and a silicon oxynitride film, and films containing nitrogen and aluminum such as an aluminum nitride film. Also, a silicon oxide film, a silicon oxynitride film, an aluminum oxide film, etc. may be used.

[0364] For example, the water vapor transmission rate of the insulating film having high moisture resistance is 1×10 -5 [g / (m 2 ·day)] or less, preferably 1×10 -6 [g / (m 2 ·day)] or less, more preferably 1×10 -7 [g / (m 2 ·day)] or less, still more preferably 1×10 -8 [g / (m 2 ·da y)] or less.

[0365] In the light-emitting panel, at least one of the insulating layer 705 or the insulating layer 715 is the emission of the light-emitting element It is necessary to transmit light. Among the insulating layer 705 and the insulating layer 715, the insulating layer on the side that transmits the light emission of the light-emitting element has a higher average light transmittance at a wavelength of 400 nm or more and 800 nm or less than the other insulating layer. Preferably, the insulating layer on the side that transmits the light emission of the light-emitting element has a higher average light transmittance at a wavelength of 400 nm or more and 800 nm or less than the other insulating layer. Preferably, the insulating layer on the side that transmits the light emission of the light-emitting element has a higher average light transmittance at a wavelength of 400 nm or more and 800 nm or less than the other insulating layer.

[0366] The insulating layer 705 and the insulating layer 715 preferably each contain oxygen, nitrogen, and silicon. For example, the insulating layer 705 and the insulating layer 715 preferably each contain silicon oxynitride. The insulating layer 705 and the insulating layer 715 preferably each contain oxygen, nitrogen, and silicon. For example, the insulating layer 705 and the insulating layer 715 preferably each contain silicon oxynitride. The insulating layer 705 and the insulating layer 715 preferably each contain silicon nitride or silicon oxynitride. The insulating layer 705 and the insulating layer 715 preferably each contain silicon nitride or silicon oxynitride. The insulating layer 705 and the insulating layer 715 each preferably have a laminated structure of a silicon oxynitride film and a silicon nitride film, and the silicon oxynitride film and the silicon nitride film are preferably in contact with each other. By alternately laminating a silicon oxynitride film and a silicon nitride film so that many inverse-phase interferences occur in the visible region, the transmittance of visible light of the laminate can be increased. The insulating layer 705 and the insulating layer 715 each preferably have a laminated structure of a silicon oxynitride film and a silicon nitride film, and the silicon oxynitride film and the silicon nitride film are preferably in contact with each other. By alternately laminating a silicon oxynitride film and a silicon nitride film so that many inverse-phase interferences occur in the visible region, the transmittance of visible light of the laminate can be increased. The insulating layer 705 and the insulating layer 715 each preferably have a laminated structure of a silicon oxynitride film and a silicon nitride film, and the silicon oxynitride film and the silicon nitride film are preferably in contact with each other. By alternately laminating a silicon oxynitride film and a silicon nitride film so that many inverse-phase interferences occur in the visible region, the transmittance of visible light of the laminate can be increased. The insulating layer 705 and the insulating layer 715 each preferably have a laminated structure of a silicon oxynitride film and a silicon nitride film, and the silicon oxynitride film and the silicon nitride film are preferably in contact with each other. By alternately laminating a silicon oxynitride film and a silicon nitride film so that many inverse-phase interferences occur in the visible region, the transmittance of visible light of the laminate can be increased.

[0367] The structure of the transistor included in the light-emitting panel is not particularly limited. For example, it may be a staggered transistor or an inverted staggered transistor. Also, it may be any of a top-gate type or a bottom-gate type transistor structure. The semiconductor material used for the transistor is not particularly limited, and examples include silicon, germanium, organic semiconductors, etc. Alternatively, an oxide semiconductor containing at least one of indium, gallium, and zinc, such as an In-Ga-Zn-based metal oxide, may be used. The structure of the transistor included in the light-emitting panel is not particularly limited. For example, it may be a staggered transistor or an inverted staggered transistor. Also, it may be any of a top-gate type or a bottom-gate type transistor structure. The semiconductor material used for the transistor is not particularly limited, and examples include silicon, germanium, organic semiconductors, etc. Alternatively, an oxide semiconductor containing at least one of indium, gallium, and zinc, such as an In-Ga-Zn-based metal oxide, may be used. The structure of the transistor included in the light-emitting panel is not particularly limited. For example, it may be a staggered transistor or an inverted staggered transistor. Also, it may be any of a top-gate type or a bottom-gate type transistor structure. The semiconductor material used for the transistor is not particularly limited, and examples include silicon, germanium, organic semiconductors, etc. Alternatively, an oxide semiconductor containing at least one of indium, gallium, and zinc, such as an In-Ga-Zn-based metal oxide, may be used. The structure of the transistor included in the light-emitting panel is not particularly limited. For example, it may be a staggered transistor or an inverted staggered transistor. Also, it may be any of a top-gate type or a bottom-gate type transistor structure. The semiconductor material used for the transistor is not particularly limited, and examples include silicon, germanium, organic semiconductors, etc. Alternatively, an oxide semiconductor containing at least one of indium, gallium, and zinc, such as an In-Ga-Zn-based metal oxide, may be used. The structure of the transistor included in the light-emitting panel is not particularly limited. For example, it may be a staggered transistor or an inverted staggered transistor. Also, it may be any of a top-gate type or a bottom-gate type transistor structure. The semiconductor material used for the transistor is not particularly limited, and examples include silicon, germanium, organic semiconductors, etc. Alternatively, an oxide semiconductor containing at least one of indium, gallium, and zinc, such as an In-Ga-Zn-based metal oxide, may be used. The structure of the transistor included in the light-emitting panel is not particularly limited. For example, it may be a staggered transistor or an inverted staggered transistor. Also, it may be any of a top-gate type or a bottom-gate type transistor structure. The semiconductor material used for the transistor is not particularly limited, and examples include silicon, germanium, organic semiconductors, etc. Alternatively, an oxide semiconductor containing at least one of indium, gallium, and zinc, such as an In-Ga-Zn-based metal oxide, may be used.

[0368] The crystallinity of the semiconductor material used for the transistor is not particularly limited, and it may be an amorphous semiconductor, a crystalline semiconductor, etc. Any semiconductor having crystallinity (microcrystalline semiconductor, polycrystalline semiconductor, single crystal semiconductor, or semiconductor having a crystalline region in part) may be used. Using a semiconductor having crystallinity is preferable because deterioration of transistor characteristics can be suppressed.

[0369] In one aspect of the present invention, it is preferable to use CAAC-OS (C-axis Aligned Crystalline Oxide Semiconductor) as the semiconductor material for the transistor. Unlike amorphous materials, CAAC-OS has few defect levels and can improve the reliability of transistors. In addition, since CAAC-OS has the feature that crystal grain boundaries are not recognized, it is possible to form a stable and uniform film over a large area, and when a flexible light-emitting device is bent, cracks are less likely to occur in the CAAC-OS film due to stress.

[0370] CAAC-OS is a crystalline oxide semiconductor in which the c-axis of the crystal is substantially perpendicular to the film surface. As the crystal structure of the oxide semiconductor, there are various structures different from single crystals, such as nano-crystal (nc) which is an aggregate of nanoscale microcrystals. CAAC-OS has lower crystallinity than single crystals and higher crystallinity than nc.

[0371] For stabilizing the characteristics of the transistor and the like, it is preferable to provide an underlayer film. As the underlayer film, an inorganic insulating film such as a silicon oxide film, a silicon nitride film, a silicon oxynitride film, or a silicon nitride oxide film can be used, and it can be formed as a single layer or by lamination. The underlayer film can be formed by a sputtering method or a CVD (Chemical Vapor Deposition) method (plasma CVD method). ​​​​​​​​​​​​​​​, thermal CVD method, MOCVD (Metal Organic CVD) method, etc.), ALD ( Atomic Layer Deposition) method, coating method, printing method, etc. can be used for formation . Note that the underlying film may not be provided if not necessary. In this case, the insulating layer 705 can also serve as the underlying film of the transistor.

[0372] As the light-emitting element, an element capable of self-luminescence can be used, and it includes elements whose luminance is controlled by current or voltage. For example, a light-emitting diode (LED), an organic EL element, an inorganic EL element, etc. can be used.

[0373] The light-emitting element can be any of a top emission type, a bottom emission type, and a dual emission type. For the electrode on the side where light is extracted, a conductive film that transmits visible light is used. Also, for the electrode on the side where light is not extracted, it is preferable to use a conductive film that reflects visible light .

[0374] The conductive film that transmits visible light can be formed using, for example, indium oxide, indium tin oxide (ITO: Indium Tin Oxide), indium zinc oxide, zinc oxide (ZnO), zinc oxide doped with gallium , etc. Also, metals such as gold, silver, platinum, magnesium, nickel, tungsten, chromium, molybdenum, iron, cobalt, copper, palladium , or titanium, alloys containing these metal materials, or nitrides of these metal materials (for example, titanium nitride), etc. can also be used by forming them thinly to have light transmittance. For example, using a laminated film of an alloy of silver and magnesium and ITO can enhance conductivity, so it is preferable. It is preferable. Further, graphene or the like may be used.

[0375] The conductive film that reflects visible light can be made of, for example, metal materials such as aluminum, gold, platinum, silver, nickel, tungsten, chromium, molybdenum, iron, cobalt, copper, or palladium, or an alloy containing these metal materials can be used. Further, lanthanum, neodymium, or germanium may be added to the above metal materials or alloys. Also, alloys containing aluminum such as an alloy of aluminum and titanium, an alloy of aluminum and nickel, an alloy of aluminum and neodymium, an alloy containing aluminum, nickel, and lanthanum (Al-Ni-La), etc. (aluminum alloy), an alloy of silver and copper, an alloy of silver, palladium, and copper (also denoted as Ag-Pd-Cu, APC), or an alloy containing silver such as an alloy of silver and magnesium can be used to form it. An alloy containing silver and copper is preferable because it has high heat resistance. Furthermore, oxidation of the aluminum alloy film can be suppressed by laminating a metal film or a metal oxide film in contact with the aluminum alloy film. Examples of the materials for the metal film and the metal oxide film include titanium, titanium oxide, etc. Also, a film composed of a conductive film that transmits visible light and a metal material may be laminated. For example, a laminated film of silver and ITO, a laminated film of an alloy of silver and magnesium and ITO, etc. can be used. The electrodes can each be formed using a vapor deposition method or a sputtering method. Alternatively, it can be formed using a discharge method such as an inkjet method, a printing method such as a screen printing method, or a plating method.

[0376]

[0377] A voltage higher than the threshold voltage of the light-emitting element is applied between the lower electrode 831 and the upper electrode 835. Then, holes are injected into the EL layer 833 from the anode side, and electrons are injected from the cathode side. The injected electrons and holes recombine in the EL layer 833, and the light-emitting substance contained in the EL layer 833 emits light. emits light.

[0378] The EL layer 833 has at least a light-emitting layer. As layers other than the light-emitting layer, the EL layer 833 may further have a layer containing a substance with high hole-injecting property, a substance with high hole-transporting property, a hole-blocking material, a substance with high electron-transporting property, a substance with high electron-injecting property, or a bipolar substance (a substance with high electron-transporting property and high hole-transporting property), etc. The EL layer 833 may use either a low-molecular compound or a high-molecular compound, and may contain an inorganic compound. The layers constituting the EL layer 833 can be formed by methods such as vapor deposition method (including vacuum vapor deposition method), transfer method, printing method, inkjet method, coating method, etc.

[0379] The light-emitting element 830 may contain two or more light-emitting substances. Thereby, for example, a light-emitting element that emits white light can be realized. For example, white light can be obtained by selecting light-emitting substances such that the emissions of each of the two or more light-emitting substances are complementary colors. For example, light-emitting substances that exhibit emissions such as R (red), G (green), B (blue), Y (yellow), or O (orange), or light-emitting substances that exhibit emissions containing spectral components of two or more colors among R, G, and B can be used. For example, a light-emitting substance that exhibits blue emission and a light-emitting substance that exhibits yellow emission may be used. At this time, the emission spectrum of the light-emitting substance that exhibits yellow emission contains spectral components of green and red.

[0380] The light-emitting element 830 may contain two or more light-emitting substances. Thereby, for example, a light-emitting element that emits white light can be realized. For example, white light can be obtained by selecting light-emitting substances such that the emissions of each of the two or more light-emitting substances are complementary colors. For example, light-emitting substances that exhibit emissions such as R (red), G (green), B (blue), Y (yellow), or O (orange), or light-emitting substances that exhibit emissions containing spectral components of two or more colors among R, G, and B can be used. For example, a light-emitting substance that exhibits blue emission and a light-emitting substance that exhibits yellow emission may be used. At this time, the emission spectrum of the light-emitting substance that exhibits yellow emission contains spectral components of green and red. The light-emitting element 830 may contain two or more light-emitting substances. Thereby, for example, a light-emitting element that emits white light can be realized. For example, white light can be obtained by selecting light-emitting substances such that the emissions of each of the two or more light-emitting substances are complementary colors. For example, light-emitting substances that exhibit emissions such as R (red), G (green), B (blue), Y (yellow), or O (orange), or light-emitting substances that exhibit emissions containing spectral components of two or more colors among R, G, and B can be used. For example, a light-emitting substance that exhibits blue emission and a light-emitting substance that exhibits yellow emission may be used. is preferable. Further, the emission spectrum of the light-emitting element 830 has two or more peaks within the range of the visible region (for example, 350 nm or more and 750 nm or less, or 400 nm or more and 800 nm or less, etc.).

[0381] The EL layer 833 may have a plurality of light-emitting layers. In the EL layer 833, the plurality of light-emitting layers may be laminated in contact with each other, or may be laminated via a separation layer. For example, a separation layer may be provided between a fluorescent light-emitting layer and a phosphorescent light-emitting layer.

[0382] The separation layer can be provided, for example, to prevent energy transfer (particularly triplet energy transfer) by the Dexter mechanism from the excited state of the phosphorescent material generated in the phosphorescent light-emitting layer to the fluorescent material in the fluorescent light-emitting layer. The separation layer may have a thickness of about several nm. Specifically, 0.1n m or more and 20 nm or less, or 1 nm or more and 10 nm or less, or 1 nm or more and 5 nm or less . The separation layer includes a single material (preferably a bipolar substance) or a plurality of materials (preferably a hole-transporting material and an electron-transporting material). The separation layer may be formed using the materials contained in the light-emitting layer in contact with the separation layer. Thereby

[0383] the production of the light-emitting element becomes easy, and the driving voltage is reduced. For example, when the phosphorescent light-emitting layer consists of a host material, an assist material, and a phosphorescent material (guest material), the separation layer may be formed of the host material and the assist material. In other words, the separation layer has a region that does not contain a phosphorescent material, and the phosphorescent light-emitting layer has a region that contains a phosphorescent material. Thereby, it becomes possible to deposit the separation layer and the phosphorescent light-emitting layer based on the presence or absence of the phosphorescent material. Also, with such a configuration ​​​By making it like this, it becomes possible to form the separation layer and the phosphorescent light-emitting layer in the same chamber. Thereby, the manufacturing cost can be reduced.

[0384] Further, the light-emitting element 830 may be a single element having one EL layer, or may be a tandem element having a plurality of EL layers stacked via a charge generation layer.

[0385] The light-emitting element is preferably provided between a pair of highly moisture-proof insulating films. Thereby, it is possible to suppress the intrusion of impurities such as water into the light-emitting element and suppress the deterioration of the reliability of the light-emitting panel. Specifically, as described above, when using a highly moisture-proof insulating film as the insulating layer 705 and the insulating layer 715, the light-emitting element is located between a pair of highly moisture-proof insulating films, and the reliability of the light-emitting panel can be suppressed from deteriorating.

[0386] As the insulating layer 815, for example, an inorganic insulating film such as a silicon oxide film, a silicon oxynitride film, or an aluminum oxide film can be used. Further, as the insulating layers 817, 817a, and 817b, for example, organic materials such as polyimide, acrylic, polyamide, polyimideamide, and benzocyclobutene-based resins can be used respectively. Also, a low dielectric constant material (low-k material) or the like can be used. Further, each insulating layer may be formed by laminating a plurality of insulating films.

[0387] The insulating layer 821 is formed using an organic insulating material or an inorganic insulating material. As the resin, for example, polyimide resin, polyamide resin, acrylic resin, siloxane resin, epoxy resin, or phenolic resin can be used. In particular, using a photosensitive resin material, the lower part An opening is formed on the electrode 831, and it is preferable that the side wall of the opening is formed to have a continuous curvature to form an inclined surface. It is preferably formed so as to be an inclined surface.

[0388] The method for forming the insulating layer 821 is not particularly limited. For example, a photolithography method, a sputtering method, a vapor deposition method, a droplet discharge method (such as an inkjet method), a printing method (such as screen printing, offset printing, etc.) can be used.

[0389] The spacer 823 can be formed using an inorganic insulating material, an organic insulating material, a metal material, etc. For example, as the inorganic insulating material or the organic insulating material, various materials that can be used for the above insulating layer can be mentioned. As the metal material, titanium, aluminum, etc. can be used. By configuring the spacer 823 containing a conductive material to be electrically connected to the upper electrode 835, the potential drop caused by the resistance of the upper electrode 835 can be suppressed. Also, the spacer 823 may have a forward taper shape or a reverse taper shape.

[0390]

[0391] The colored layer is a colored layer that transmits light in a specific wavelength band. For example, a color filter that transmits light in the wavelength band of red, green, blue, or yellow can be used. Each colored layer can be formed at a desired position by using various materials and methods such as printing, inkjet, and etching using photolithography. In addition, in the case of white sub-pixels, a resin such as a transparent resin may be disposed so as to overlap with the light-emitting element. The light-shielding layer is provided between adjacent colored layers. The light-shielding layer shields light from adjacent light-emitting elements and suppresses color mixing between adjacent light-emitting elements. Here, by providing the end portion of the colored layer so as to overlap with the light-shielding layer, light leakage can be suppressed. As the light-shielding layer, a material that blocks light emission from the light-emitting element can be used. For example, a black matrix can be formed using a metal material or a resin material containing a pigment or a dye. Note that it is preferable to provide the light-shielding layer in a region other than the light-emitting portion such as a drive circuit portion because unintentional light leakage due to guided light or the like can be suppressed. The colored layer and the light-shielding layer may be covered with an overcoat. By providing the overcoat, diffusion of impurities contained in the colored layer into the light-emitting element can be prevented. The overcoat is composed of a material that transmits light emission from the light-emitting element. For example, an inorganic insulating film such as a silicon nitride film or a silicon oxide film, or an organic insulating film such as an acrylic film or a polyimide film can be used, and a laminated structure of an organic insulating film and an inorganic insulating film may be used.

[0392] The light-shielding layer is provided between adjacent colored layers. The light-shielding layer shields light from adjacent light-emitting elements and suppresses color mixing between adjacent light-emitting elements. Here, by providing the end portion of the colored layer so as to overlap with the light-shielding layer, light leakage can be suppressed. As the light-shielding layer, a material that blocks light emission from the light-emitting element can be used. For example, a black matrix can be formed using a metal material or a resin material containing a pigment or a dye. Note that it is preferable to provide the light-shielding layer in a region other than the light-emitting portion such as a drive circuit portion because unintentional light leakage due to guided light or the like can be suppressed. The colored layer and the light-shielding layer may be covered with an overcoat. By providing the overcoat, diffusion of impurities contained in the colored layer into the light-emitting element can be prevented. The overcoat is composed of a material that transmits light emission from the light-emitting element. For example, an inorganic insulating film such as a silicon nitride film or a silicon oxide film, or an organic insulating film such as an acrylic film or a polyimide film can be used, and a laminated structure of an organic insulating film and an inorganic insulating film may be used. The light-shielding layer is provided between adjacent colored layers. The light-shielding layer shields light from adjacent light-emitting elements and suppresses color mixing between adjacent light-emitting elements. Here, by providing the end portion of the colored layer so as to overlap with the light-shielding layer, light leakage can be suppressed. As the light-shielding layer, a material that blocks light emission from the light-emitting element can be used. For example, a black matrix can be formed using a metal material or a resin material containing a pigment or a dye. Note that it is preferable to provide the light-shielding layer in a region other than the light-emitting portion such as a drive circuit portion because unintentional light leakage due to guided light or the like can be suppressed. The colored layer and the light-shielding layer may be covered with an overcoat. By providing the overcoat, diffusion of impurities contained in the colored layer into the light-emitting element can be prevented. The overcoat is composed of a material that transmits light emission from the light-emitting element. For example, an inorganic insulating film such as a silicon nitride film or a silicon oxide film, or an organic insulating film such as an acrylic film or a polyimide film can be used, and a laminated structure of an organic insulating film and an inorganic insulating film may be used. The colored layer and the light-shielding layer may be covered with an overcoat. By providing the overcoat, diffusion of impurities contained in the colored layer into the light-emitting element can be prevented. The overcoat is composed of a material that transmits light emission from the light-emitting element. For example, an inorganic insulating film such as a silicon nitride film or a silicon oxide film, or an organic insulating film such as an acrylic film or a polyimide film can be used, and a laminated structure of an organic insulating film and an inorganic insulating film may be used. The colored layer and the light-shielding layer may be covered with an overcoat. By providing the overcoat, diffusion of impurities contained in the colored layer into the light-emitting element can be prevented. The overcoat is composed of a material that transmits light emission from the light-emitting element. For example, an inorganic insulating film such as a silicon nitride film or a silicon oxide film, or an organic insulating film such as an acrylic film or a polyimide film can be used, and a laminated structure of an organic insulating film and an inorganic insulating film may be used. The colored layer and the light-shielding layer may be covered with an overcoat. By providing the overcoat, diffusion of impurities contained in the colored layer into the light-emitting element can be prevented. The overcoat is composed of a material that transmits light emission from the light-emitting element. For example, an inorganic insulating film such as a silicon nitride film or a silicon oxide film, or an organic insulating film such as an acrylic film or a polyimide film can be used, and a laminated structure of an organic insulating film and an inorganic insulating film may be used.

[0393] In addition, an overcoat covering the colored layer and the light-shielding layer may be provided. By providing the overcoat, diffusion of impurities contained in the colored layer into the light-emitting element can be prevented. The overcoat is composed of a material that transmits light emission from the light-emitting element. For example, an inorganic insulating film such as a silicon nitride film or a silicon oxide film, or an organic insulating film such as an acrylic film or a polyimide film can be used, and a laminated structure of an organic insulating film and an inorganic insulating film may be used. By providing the overcoat, diffusion of impurities contained in the colored layer into the light-emitting element can be prevented. The overcoat is composed of a material that transmits light emission from the light-emitting element. For example, an inorganic insulating film such as a silicon nitride film or a silicon oxide film, or an organic insulating film such as an acrylic film or a polyimide film can be used, and a laminated structure of an organic insulating film and an inorganic insulating film may be used. The overcoat is composed of a material that transmits light emission from the light-emitting element. For example, an inorganic insulating film such as a silicon nitride film or a silicon oxide film, or an organic insulating film such as an acrylic film or a polyimide film can be used, and a laminated structure of an organic insulating film and an inorganic insulating film may be used. The overcoat is composed of a material that transmits light emission from the light-emitting element. For example, an inorganic insulating film such as a silicon nitride film or a silicon oxide film, or an organic insulating film such as an acrylic film or a polyimide film can be used, and a laminated structure of an organic insulating film and an inorganic insulating film may be used. The overcoat is composed of a material that transmits light emission from the light-emitting element. For example, an inorganic insulating film such as a silicon nitride film or a silicon oxide film, or an organic insulating film such as an acrylic film or a polyimide film can be used, and a laminated structure of an organic insulating film and an inorganic insulating film may be used.

[0394] When applying the material of the adhesive layer on the colored layer and the light-shielding layer, as the material of the overcoat It is preferable to use a material with high wettability for the material of the subsequent layer. For example, as an overcoat layer, an oxide conductive film such as an ITO film or a metal film such as a thin Ag film with sufficient light transmittance is preferably used.

[0395] As the connector, various anisotropic conductive films (ACF: Anisotropic Con ductive Film) or anisotropic conductive pastes (ACP: Anisotropic Conductive Paste) can be used.

[0396] As described above, various panels such as a light-emitting panel, a display panel, and a touch panel can be applied to the display device according to one aspect of the present invention.

[0397] As an example of the display element, for example, an EL element (an EL element including an organic substance and an inorganic substance, an organic E L element, an inorganic EL element), an LED (a white LED, a red LED, a green LED, a blue LED, etc.), a liquid crystal element, an electrophoretic element, a display element using MEMS (micro-electro-mechanical system) and the like can be mentioned.

[0398] Note that the light-emitting panel according to one aspect of the present invention may be used as a display panel or as an illumination panel. For example, it may be utilized as a light source such as a backlight or a front light, that is, as an illumination panel for a display panel.

[0399] This embodiment can be appropriately combined with other embodiments.

[0400] (Embodiment 6) In this embodiment, a touch panel, which is an example of a display panel, will be described with reference to the drawings. ​​​Note that, among the components of the touch panel, for components similar to the light-emitting panel described in Embodiment 5, the previous description can also be referred to. Further, in this embodiment, a touch panel using a light-emitting element is exemplified, but it is not limited thereto. For components similar to those described above, reference can also be made to the previous description. Also, in this embodiment, a touch panel using a light-emitting element is exemplified, but it is not limited thereto.

[0401] <Configuration Example 1> FIG. 29(A) is a top view of the touch panel. FIG. 29(B) is a cross-sectional view taken along the dashed line A -B and the dashed line C-D in FIG. 29(A). FIG. 29(C) is a cross-sectional view taken along the dashed line E -F in FIG. 29(A).

[0402] The touch panel 390 shown in FIG. 29(A) includes a display unit 301 (also serving as an input unit), a scanning line driving circuit 303g(1), an imaging pixel driving circuit 303g(2), an image signal line driving circuit 303s (1), and an imaging signal line driving circuit 303s(2).

[0403] The display unit 301 includes a plurality of pixels 302 and a plurality of imaging pixels 308.

[0404] Each pixel 302 includes a plurality of sub-pixels. Each sub-pixel includes a light-emitting element and a pixel circuit.

[0405] The pixel circuit can supply power to drive the light-emitting element. The pixel circuit is electrically connected to a wiring for supplying a selection signal and is also electrically connected to a wiring for supplying an image signal.

[0406] The scanning line driving circuit 303g(1) can supply a selection signal to the pixel 302.

[0407] The image signal line driving circuit 303s(1) can supply an image signal to the pixel 302.

[0408] The touch sensor can be configured using the imaging pixel 308. Specifically, the imaging pixel 3 08 can detect a finger or the like touching the display unit 301.

[0409] The imaging pixel 308 has a photoelectric conversion element and an imaging pixel circuit.

[0410] The imaging pixel circuit can drive the photoelectric conversion element. The imaging pixel circuit is electrically connected to a wiring that can supply a control signal. Also, the imaging pixel circuit is electrically connected to a wiring that can supply a power supply potential.

[0411] Examples of the control signal include a signal capable of selecting an imaging pixel circuit that reads out a recorded imaging signal, a signal capable of initializing the imaging pixel circuit, and a signal capable of determining the time for the imaging pixel circuit to detect light.

[0412] The imaging pixel driving circuit 303g(2) can supply a control signal to the imaging pixel 308.

[0413] The imaging signal line driving circuit 303s(2) can read out an imaging signal.

[0414] As shown in FIGS. 29(B) and (C), the touch panel 390 has a substrate 701, an adhesive layer 703, an insulating layer 705, a substrate 711, an adhesive layer 713, and an insulating layer 715. Also, the substrate 7 01 and the substrate 711 are bonded together by an adhesive layer 360.

[0415] The substrate 701 and the insulating layer 705 are bonded together by an adhesive layer 703. Also, the substrate 711 and the insulating layer 715 are bonded together by an adhesive layer 713.

[0416] For materials that can be used for the substrate, adhesive layer, and insulating layer, see embodiment 2. It is possible.

[0417] The pixel 302 includes a subpixel 302R, a subpixel 302G, and a subpixel 302B (FIG. 29). (C)). The subpixel 302R has a light-emitting unit 380R, and the subpixel 302G has a light-emitting Subpixel 302B has light-emitting unit 380B.

[0418] For example, the sub-pixel 302R includes a light-emitting element 350R and a pixel circuit. The light emitting unit 350R includes a transistor 302t that can supply power to the light emitting unit 350R. The light emitting element 350R and the optical element (for example, a colored layer 36 that transmits red light) are included in the light emitting element 350R. 7R).

[0419] The light emitting element 350R comprises a lower electrode 351R, an EL layer 353, and an upper electrode 352 in this order. They are stacked (Figure 29(C)).

[0420] The EL layer 353 includes a first EL layer 353a, an intermediate layer 354, and a second EL layer 353b. The layers are stacked in this order.

[0421] In addition, the 380R light emitting unit is equipped with a micro-cathode to efficiently extract light of specific wavelengths. Specifically, a cavity structure can be provided to efficiently extract specific light. The EL layer may be disposed between a film that reflects visible light and a semi-reflective / semi-transmissive film that are disposed in the same manner. stomach.

[0422] For example, the light emitting unit 380R includes an adhesive layer 330 in contact with the light emitting element 350R and the colored layer 367R. It has 60.

[0423] The colored layer 367R is located at a position overlapping the light-emitting element 350R. As a result, a part of the light emitted by the light-emitting element 350R passes through the adhesive layer 360 and the colored layer 367R and is emitted to the outside of the light-emitting unit 380R as shown by the arrow in the figure.

[0424] The touch panel 390 has a light-shielding layer 367BM. The light-shielding layer 367BM is provided so as to surround a colored layer (for example, the colored layer 367R).

[0425] The touch panel 390 has an antireflection layer 367p at a position overlapping the display portion 301. As the antireflection layer 367p, for example, a circularly polarized plate can be used.

[0426] The touch panel 390 has an insulating layer 321. The insulating layer 321 covers the transistor 302t and the like. Note that the insulating layer 321 can be used as a layer for flattening unevenness caused by a pixel circuit or an imaging pixel circuit. Further, it is preferable that the insulating layer 321 covers the transistor 302t and the like and can suppress the diffusion of impurities into the transistor 302t and the like.

[0427] The touch panel 390 has a partition wall 328 overlapping the end portion of the lower electrode 351R. Further, a spacer 329 for controlling the distance between the substrate 701 and the substrate 711 is provided on the partition wall 328.

[0428] The image signal line driving circuit 303s(1) includes a transistor 303t and a capacitor 303c. Note that the driving circuit can be formed on the same substrate in the same process as the pixel circuit. As shown in FIG. 29( B), the transistor 303t may have a second gate 304 on the insulating layer 321. The second gate 304 is electrically connected to the gate of the transistor 303t. ​​​​​​​It may be, or different potentials may be applied thereto. Further, if necessary, the gate 304 of the second may be provided in the transistor 308t, the transistor 302t, etc.

[0429] The imaging pixel 308 has a photoelectric conversion element 308p and an imaging pixel circuit. The imaging pixel circuit can detect the light irradiated on the photoelectric conversion element 308p. The imaging pixel circuit includes a trans istor 308t.

[0430] For example, a pin-type photodiode can be used as the photoelectric conversion element 308p.

[0431] The touch panel 390 has a wiring 311 capable of supplying signals, and a terminal 319 is provided on the wiring 311. An FPC 309 capable of supplying signals such as an image signal and a synchronization signal is electrically connected to the terminal 319. A printed wiring board ( PWB) may be attached to the FPC309.

[0432] Note that transistors such as the transistor 302t, the transistor 303t, and the transistor 308t can be formed in the same process. Or, they may be formed in different processes respectively.

[0433] <Configuration Example 2> FIGS. 30(A) and (B) are perspective views of the touch panel 505. For clarity, representative components are shown. FIG. 31 is a cross-sectional view taken along the dash-dotted line X1-X2 shown in FIG. 30(A).

[0434] As shown in FIGS. 30(A) and (B), the touch panel 505 has a display unit 501, a scanning line driving circuit 303g(1), and a touch sensor 595, etc. Further, the touch panel 505 ​​​​, includes a substrate 701, a substrate 711, and a substrate 590.

[0435] The touch panel 505 has a plurality of pixels and a plurality of wirings 311. The plurality of wirings 311 can supply signals to the pixels. The plurality of wirings 311 are routed to the outer peripheral portion of the substrate 701 and a part of them constitutes a terminal 319. The terminal 319 is electrically connected to the FPC509(1) .

[0436] The touch panel 505 has a touch sensor 595 and a plurality of wirings 598. The plurality of wirings 598 are electrically connected to the touch sensor 595. The plurality of wirings 598 are routed to the outer peripheral portion of the substrate 590 and a part of them constitutes a terminal. And the terminal is electrically connected to the FPC509(2 ). In FIG. 30(B), for clarity, the electrodes and wirings of the touch sensor 595 provided on the back side of the substrate 590 ( the side facing the substrate 701) are shown by solid lines .

[0437] For the touch sensor 595, for example, a capacitance type touch sensor can be applied. As the capacitance method , there are a surface capacitance method, a projected capacitance method, etc. Here, the case of applying a projected capacitance type touch sensor is shown.

[0438] As the projected capacitance method, there are a self-capacitance method, a mutual-capacitance method, etc. Using the mutual-capacitance method is preferable because simultaneous multi-point detection becomes possible.

[0439] Note that various sensors that can detect the proximity or contact of a detection target such as a finger can be applied to the touch sensor 595 .

[0440] The projection-type capacitive touch sensor 595 has electrodes 591 and 592. Electrode 5 91 is electrically connected to any one of a plurality of wirings 598, and electrode 592 is electrically connected to any one of the other of the plurality of wirings 598.

[0441] As shown in FIGS. 30(A) and (B), electrode 592 has a shape in which a plurality of quadrilaterals repeatedly arranged in one direction are connected at corners.

[0442] Electrode 591 is quadrilateral and is repeatedly arranged in a direction intersecting the direction in which electrode 592 extends. Note that the plurality of electrodes 591 do not necessarily have to be arranged in a direction perpendicular to one electrode 592, and may be arranged at an angle of less than 90 degrees.

[0443] Wiring 594 is provided so as to intersect electrode 592. Wiring 594 electrically connects two electrodes 591 that sandwich one of electrodes 592. At this time, a shape in which the area of the intersection portion of electrode 592 and wiring 594 is as small as possible is preferable. Thereby, the area of the region where no electrode is provided can be reduced, and unevenness in light transmittance can be reduced. As a result, unevenness in the luminance of light transmitted through the touch sensor 595 can be reduced.

[0444] Note that the shapes of electrodes 591 and 592 are not limited to this, and can take various shapes. For example, a plurality of electrodes 591 may be arranged so that gaps are as small as possible, and a plurality of electrodes 592 may be provided at intervals so that regions that do not overlap with electrodes 591 are formed via an insulating layer. At this time, it is preferable to provide dummy electrodes that are electrically insulated from these between two adjacent electrodes 592, because the area of regions with different light transmittance can be reduced.

[0445] ​​​​​​​​​​​​ As shown in FIG. 31(A), the touch panel 505 includes a substrate 701, an adhesive layer 703, an insulating layer 705, a substrate 711, an adhesive layer 713, and an insulating layer 715. Further, the substrate 701 and the substrate 711 are bonded together by an adhesive layer 360.

[0446] The adhesive layer 597 bonds the substrate 590 to the substrate 711 so that the touch sensor 595 overlaps the display unit 501. The adhesive layer 597 has light transmissibility.

[0447] The electrodes 591 and 592 are formed using a conductive material having light transmissibility. As the conductive material having light transmissibility, conductive oxides such as indium oxide, indium tin oxide, indium zinc oxide, zinc oxide, and zinc oxide added with gallium can be used. Note that a film containing graphene can also be used. The film containing graphene can be formed, for example, by reducing a film containing graphene oxide formed in a film shape. Examples of the reduction method include applying heat.

[0448] In addition, it is desirable that the resistance values of conductive films such as the electrodes 591, 592, and wiring 594, that is, the materials used for the wiring and electrodes constituting the touch panel, are low. As an example, ITO, indium zinc oxide, ZnO, silver, copper, aluminum, carbon nanotubes, graphene etc. may be used. Further, metal nanowires formed using a very thin (for example, having a diameter of several nm) and a large number of conductors may be used. As an example, Ag nanowires, C u nanowires, or Al nanowires etc. may be used. In the case of Ag nanowires, for example, a light transmittance of 89% or more and a sheet resistance value of 40 Ω / □ or more and 100 Ω / □ or less are realized. In addition, since the light transmittance is high, it is possible to use the electrodes used in the display element, for example, pixel electrodes and The common electrode may be made of metal nanowires, carbon nanotubes, graphene, or the like.

[0449] After forming a film of a light-transmitting conductive material on a substrate 590 by a sputtering method, By using various patterning techniques such as lithography, unnecessary parts are removed to form the electrode 591. and electrode 592 can be formed.

[0450] The electrodes 591 and 592 are covered with an insulating layer 593. An opening is provided in the insulating layer 593, and a wiring 594 electrically connects the adjacent electrodes 591. A photoconductive material is preferred for the wiring 594 because it can increase the aperture ratio of the touch panel. In addition, a material having higher conductivity than the electrodes 591 and 592 can be used. It can be suitably used for the wiring 594 because it can reduce air resistance.

[0451] Note that an insulating layer is provided to cover the insulating layer 593 and the wiring 594 to protect the touch sensor 595. It is possible.

[0452] Furthermore, the connection layer 599 electrically connects the wiring 598 and the FPC 509(2).

[0453] The display unit 501 has a plurality of pixels arranged in a matrix. Since the details are similar, the explanation will be omitted.

[0454] Various transistors can be used in touch panels. Bottom-gate transistors The configuration when applying this is shown in FIGS.

[0455] For example, a semiconductor layer containing an oxide semiconductor, amorphous silicon, etc. can be applied to the transistors 302t and 303t shown in Fig. 31(A). It can be applied to the transistors 302t and 303t.

[0456] For example, a semiconductor layer containing polycrystalline silicon crystallized by a process such as laser annealing can be applied to the transistors 302t and 303t shown in Fig. 31(B). It is possible.

[0457] Further, the configuration in the case of applying a top-gate type transistor is shown in Fig. 31(C).

[0458] For example, a single-crystalline silicon film or the like transferred from a polycrystalline silicon or single-crystalline silicon substrate etc. containing a semiconductor layer can be applied to the transistors 302t and 303t shown in Fig. 31(C). It can be applied.

[0459] <Configuration Example 3> Fig. 32 is a cross-sectional view of the touch panel 505B. The touch panel 505B described in the present embodiment is different from the touch panel 505 in Configuration Example 2 in that the supplied image information is displayed on the side where the transistors are provided and the touch sensor is provided on the substrate 701 side of the display unit. Here, different configurations will be described in detail, and the parts using the same configurations can refer to the above description. The coloring layer 367R is located at a position overlapping the light-emitting element 350R. Also, the light-emitting element 350R shown in Fig. 32(A) emits light toward the side where the transistor 302t is provided. As a result, a part of the light emitted by the light-emitting element 350R passes through the coloring layer 367R and is emitted outside the light-emitting unit 380R in the direction of the arrow shown in the figure. It is applicable.

[0460]

[0461] The touch panel 505B has a light-shielding layer 367BM in the direction of light emission. The light-shielding layer 367 BM is provided so as to surround a colored layer (for example, the colored layer 367R).

[0462] The touch sensor 595 is provided on the substrate 701 side, not on the substrate 711 side (FIG. 32( A)).

[0463] The adhesive layer 597 attaches the substrate 590 to the substrate 701 so that the touch sensor 595 overlaps the display unit. The adhesive layer 597 has translucency.

[0464] In addition, the configuration in the case of applying a bottom-gate type transistor to the display unit 501 is shown in FIG. 32( A), (B).

[0465] For example, a semiconductor layer containing an oxide semiconductor, amorphous silicon, or the like can be applied to the transistors 302t and 303t shown in FIG. 32(A).

[0466] For example, a semiconductor layer containing polycrystalline silicon or the like can be applied to the transistors 302t and 303t shown in FIG. 32(B).

[0467] In addition, the configuration in the case of applying a top-gate type transistor is shown in FIG. 32(C).

[0468] For example, a semiconductor layer containing a single-crystalline silicon film or the like transferred from a polycrystalline silicon or single-crystalline silicon substrate or the like can be applied to the transistors 302t and 303t shown in FIG. 32(C).

[0469] This embodiment can be appropriately combined with other embodiments.

[0470] ​​​ (Embodiment 7) In this embodiment, the display panel will be described with reference to the drawings.

[0471] In FIG. 33(A), a sealing material 4005 is provided so as to surround a pixel portion 4002 provided on a first substrate 4001. The pixel portion 4002 is sealed by the first substrate 4001, the sealing material 4005, and a second substrate 4006. In FIG. 33(A), a signal line driving circuit 4003 formed of a single-crystalline semiconductor or a polycrystalline semiconductor on a separately prepared substrate, and a scanning line driving circuit 4004 are mounted in a region different from the region surrounded by the sealing material 4005 on the first substrate 4001. Also, various signals and potentials applied to the signal line driving circuit 4003, the scanning line driving circuit 4004, or the pixel portion 4002 are supplied from an FPC 4018a and an FPC 4018b.

[0472] In FIGS. 33(B) and (C), a sealing material 4005 is provided so as to surround the pixel portion 4002 provided on the first substrate 4001 and the scanning line driving circuit 4004. The pixel portion 4002 and the scanning line driving circuit 4004 are sealed by the first substrate 4001, the sealing material 4005, and the second substrate 4006. In FIGS. 33(B) and (C), a signal line driving circuit 4003 formed of a single-crystalline semiconductor or a polycrystalline semiconductor on a separately prepared substrate is mounted in a region different from the region surrounded by the sealing material 4005 on the first substrate 4001. In FIGS. 33(B) and (C), various signals and potentials applied to the signal line driving circuit 4003, the scanning line driving circuit 4004, or the pixel portion 4002 are supplied from an FPC 4018.

[0473] ​​​​​​​​​ In FIGS. 33(B) and 33(C), an example is shown in which the signal line driving circuit 4003 is separately formed and mounted on the first substrate 4001, but the present invention is not limited to this configuration. The scanning line driving circuit may be separately formed and mounted, or a part of the signal line driving circuit or a part of the scanning line driving circuit may be separately formed and mounted.

[0474] Note that the connection method of the separately formed driving circuit is not particularly limited, and wire bonding ing, COG, TCP, COF, etc. can be used. FIG. 33(A) is an example in which the signal line driving circuit 4003 and the scanning line driving circuit 4004 are mounted by COG, FIG. 33(B) is an example in which the signal line driving circuit 4003 is mounted by COG, and FIG. 33(C) is an example in which the signal line driving circuit 4003 is mounted by TCP ing. ing.

[0475] Also, the pixel portion 4002 and the scanning line driving circuit 4004 provided on the first substrate 4001 have a plurality of transistors.

[0476] FIG. 34 is a cross-sectional view taken along the dashed-dotted line N1-N2 shown in FIG. 33(B). As shown in FIG. 34 , the display panel has an electrode 4015, and the electrode 4015 is electrically connected to the terminal of the FPC 4018 via the anisotropic conductive layer 4019. Further, the electrode 4015 is electrically connected to the wiring 4014 through the insulating layer 4020 and the opening formed in the insulating layer 4022. connected.

[0477] The electrode 4015 is formed from the same conductive layer as the first electrode 4030, and the wiring 4014 is formed from the same conductive layer as the source electrodes and drain electrodes of the transistors 4010 and 4011. layer.

[0478] In FIG. 34, the electrode 4015 and the wiring 4014 are connected through one opening formed in the insulating layer 4020 and the insulating layer 4022, but the number of openings is not limited to one. For example, by forming a plurality of openings, unevenness is formed on the surface of the electrode 4015, so that the contact area between the subsequently formed electrode 4015 and the anisotropic conductive layer 4019 can be increased. Therefore, the connection between the FPC4018 and the electrode 4015 can be made good. Further, the pixel portion 4002 provided on the first substrate 4001 and the scanning line driving circuit 4004 each have a plurality of transistors. In FIG. 34, the transistor 4010 included in the pixel portion 4002 and the transistor 4011 included in the scanning line driving circuit 4004 are illustrated. In FIG. 34(A), an insulating layer 4020 is provided on the transistor 4010 and the transistor 4011. The insulating layer 4023 is an insulating layer that functions as an underlying layer, and the insulating layer 4022 is an insulating layer that functions as a gate insulating layer. The transistor 4010 provided in the pixel portion 4002 is electrically connected to the display element to form a display panel. The display element is not particularly limited as long as it can perform display, and various display elements can be used. FIG. 34 is an example of a liquid crystal display panel using a liquid crystal element as a display element. In FIG. 34, the liquid crystal element 4013, which is a display element, includes a first electrode 4030, a second electrode 4031, and a liquid crystal layer 4008. Note that insulating layers 4032 and 4033 that function as alignment films are provided so as to sandwich the liquid crystal layer 4008. The second electrode 4031 is provided on the second substrate 4.

[0479]

[0480]

[0481] ​​​​​​​​​​​​​​It is provided on the 006 side, and the first electrode 4030 and the second electrode 4031 are configured to overlap with each other with the liquid crystal layer 4008 therebetween. It has a configuration in which they overlap with each other with the liquid crystal layer 4008 therebetween.

[0482] Also, the spacer 4035 is a columnar spacer obtained by selectively etching an insulating layer, and is provided to control the distance (cell gap) between the first electrode 4030 and the second electrode 4031. Note that spherical spacers may be used. It is provided to control the distance (cell gap) between the first electrode 4030 and the second electrode 4031. Note that spherical spacers may be used. When using a liquid crystal element as a display element, thermotropic liquid crystals, low-molecular liquid crystals, high-molecular liquid crystals, polymer-dispersed liquid crystals, ferroelectric liquid crystals, antiferroelectric liquid crystals, etc. can be used. These liquid crystal materials exhibit a cholesteric phase, a smectic phase, a cubic phase, a chiral nematic phase, an isotropic phase, etc. depending on the conditions. Also, liquid crystals showing a blue phase without using an alignment film may be used.

[0483] When using a liquid crystal element as a display element, thermotropic liquid crystals, low-molecular liquid crystals, high-molecular liquid crystals, polymer-dispersed liquid crystals, ferroelectric liquid crystals, antiferroelectric liquid crystals, etc. can be used. These liquid crystal materials exhibit a cholesteric phase, a smectic phase, a cubic phase, a chiral nematic phase, an isotropic phase, etc. depending on the conditions. Also, liquid crystals showing a blue phase without using an alignment film may be used. When using a liquid crystal element as a display element, thermotropic liquid crystals, low-molecular liquid crystals, high-molecular liquid crystals, polymer-dispersed liquid crystals, ferroelectric liquid crystals, antiferroelectric liquid crystals, etc. can be used. These liquid crystal materials exhibit a cholesteric phase, a smectic phase, a cubic phase, a chiral nematic phase, an isotropic phase, etc. depending on the conditions. Also, liquid crystals showing a blue phase without using an alignment film may be used. These liquid crystal materials exhibit a cholesteric phase, a smectic phase, a cubic phase, a chiral nematic phase, an isotropic phase, etc. depending on the conditions. Also, liquid crystals showing a blue phase without using an alignment film may be used. These liquid crystal materials exhibit a cholesteric phase, a smectic phase, a cubic phase, a chiral nematic phase, an isotropic phase, etc. depending on the conditions. Also, liquid crystals showing a blue phase without using an alignment film may be used. Also, liquid crystals showing a blue phase without using an alignment film may be used.

[0484] Also, the resistivity of the liquid crystal material is 1×10 9 Ω·cm or more, preferably 1×10 11 Ω·cm or more, and more preferably 1×10 12 Ω·cm or more. Note that the resistivity value in this specification is the value measured at 20°C. Note that the resistivity value in this specification is the value measured at 20°C.

[0485] The size of the holding capacitance provided in the liquid crystal display panel is set so that it can hold charges for a predetermined period in consideration of the leakage current of the transistor arranged in the pixel portion. The size of the holding capacitance may be set in consideration of the off-current of the transistor. By using a transistor having a high-purity oxide semiconductor layer, it is sufficient to provide a holding capacitance having a size of 1 / 3 or less, preferably 1 / 5 or less, of the liquid crystal capacitance in each pixel. The size of the holding capacitance provided in the liquid crystal display panel is set so that it can hold charges for a predetermined period in consideration of the leakage current of the transistor arranged in the pixel portion. The size of the holding capacitance may be set in consideration of the off-current of the transistor. By using a transistor having a high-purity oxide semiconductor layer, it is sufficient to provide a holding capacitance having a size of less than 1 / 3, preferably less than 1 / 5, of the liquid crystal capacitance in each pixel. The size of the holding capacitance may be set in consideration of the off-current of the transistor. By using a transistor having a high-purity oxide semiconductor layer, it is sufficient to provide a holding capacitance having a size of less than 1 / 3, preferably less than 1 / 5, of the liquid crystal capacitance in each pixel. By using a transistor having a high-purity oxide semiconductor layer, it is sufficient to provide a holding capacitance having a size of less than 1 / 3, preferably less than 1 / 5, of the liquid crystal capacitance in each pixel. By using a transistor having a high-purity oxide semiconductor layer, it is sufficient to provide a holding capacitance having a size of less than 1 / 3, preferably less than 1 / 5, of the liquid crystal capacitance in each pixel.

[0486] In addition, since a transistor using an oxide semiconductor can obtain a relatively high field-effect mobility, it can be driven at high speed. Therefore, by using a transistor using an oxide semiconductor in the pixel portion of a semiconductor device having a display function, a high-quality image can be provided. Also, since it is possible to separately form a drive circuit portion or a pixel portion on the same substrate, the number of components of the semiconductor device can be reduced.

[0487] For liquid crystal display panels, TN (Twisted Nematic) mode, IPS (In- Plane-Switching) mode, FFS (Fringe Field Swi tching) mode, ASM (Axially Symmetric aligned Micro-cell) mode, OCB (Optical Compensated Birefringence) mode, FLC (Ferroelectric Liqu id Crystal) mode, AFLC (AntiFerroelectric Li quid Crystal) mode, etc. can be used.

[0488] Also, a normally black type liquid crystal display panel, for example, a transmissive liquid crystal display panel adopting a vertical alignment (VA) mode may be used. Here, the vertical alignment mode is a kind of method for controlling the alignment of liquid crystal molecules in a liquid crystal display panel, and is a method in which the liquid crystal molecules are oriented in the vertical direction with respect to the panel surface when no voltage is applied. Examples of the vertical alignment mode include, but are not limited to, MVA (Multi-Domain Vertical Align ment) mode, PVA (Patterned Vertical Alignmen t) mode, etc. When no voltage is applied, the liquid crystal molecules are oriented in the vertical direction with respect to the panel surface. There are several types of vertical alignment modes, such as, for example, MVA (Multi-Domain Vertical Align ment) mode, PVA (Patterned Vertical Alignmen t) mode. (t) mode, ASV (Advanced Super View) mode, etc. can be used. Also, pixels can be divided into several regions (sub-pixels), and multi-domain or multi-domain design, which is devised to tilt molecules in different directions for each region, can be used.

[0489] In addition, in the display panel, optical members (optical substrates) such as a black matrix (light-shielding layer), a polarizing member, a retardation member, an anti-reflection member, etc. are provided as appropriate. For example, circular polarization by a polarizing substrate and a retardation substrate may be used. Also, a backlight, a side light, etc. may be used as a light source.

[0490] In addition, the display method in the pixel portion can use a progressive method, an interlace method, etc. Also, when performing color display, the color elements controlled by the pixels are not limited to the three colors of RGB (R represents red, G represents green, and B represents blue). For example, there are RGBW (W represents white), or those obtained by adding one or more of yellow, cyan, magenta, etc. to RGB. Note that the size of the display area may be different for each dot of the color elements. However, one aspect of the present invention is not limited to the display panel for color display, and can also be applied to the display panel for monochrome display.

Explanation of Signs

[0491] 10 Display device 11 Display area 15 Display device 16 Display device 30 Support panel 30a Support panel 30b Support panel 30c Support panel ​​​​​​​​​​​31 First Axis 31a First axis 31b First axis 31c First axis 31d First axis 32 Second Axis 32c Second axis 32d Second axis 33 units Unit 33a 33b Unit 33c unit 33d Unit 33e unit 33f unit 33g unit 33h unit 35 Arm 35a Arm 35b Arm 35c arm 35d Arm 36 Arm 36c arm 36d Arm 37 Arm 37c Arm 37d Arm 38 The Third Axis 39a Hinge part 39b Hinge part 39c Hinge part 39d Hinge part 70 Support Panel 70a Support Panel 70b Support panel 70c support panel 81 devices 85 pillars 86 Wall 100 Display Panel 100a Display panel 100b Display panel 100c display panel 100d display panel 100f display panel 100h display panel 101 Display area 101a display area 101b display area 101c display area 102 area 102a area 102b area 103 light-transmitting layer 103a light-transmitting layer 103b light-transmitting layer 110 area that transmits visible light 110a area that transmits visible light 110b area that transmits visible light 110c area that transmits visible light 112a FPC 112b FPC 120 area that blocks visible light 120a area that blocks visible light 120b area that blocks visible light 120c area that blocks visible light 132 protective substrate 151a substrate 151b substrate 152a substrate 152b substrate 153a element layer 153b element layer 155a area 155b area 156a area 156b area 200 electronic device 201a housing 201b housing 205 area that transmits visible light 210 electronic device 211 battery 212 circuit board 213 antenna 250 electronic device 251a housing 251b housing 252 requirement 253 circuit board 254 antenna 256 battery 257 handle 258 String 260 Electronic device 261a Housing 261b Housing 262 Required 267 Handle 268 String 270 Electronic device 277 Operation button 278 Handle 279 Holder 280 Electronic device 289 Holder 290 Balloon 291 Sphere 293a Housing 293b Housing 294 Support panel 295 Electronic device 296 Rope 301 Display unit 302 Pixel 302B Sub-pixel 302G Sub-pixel 302R Sub-pixel 302t Transistor 303c Capacity 303g(1) Scanning line drive circuit 303g(2) Imaging pixel drive circuit 303s(1) Image signal line drive circuit 303s(2) Imaging signal line drive circuit 303t Transistor 304 Gate 308 Imaging pixel 308p Photoelectric conversion element 308t Transistor 309 FPC 311 Wiring 319 Terminal 321 Insulation layer 328 Partition wall 329 Spacer 330 Electronic device 331 Housing 332 Speaker 333a Camera 333b Camera 334a Light 334b Light 335 Operation Button 336 Battery 337 Operation Button 338 Microphone 339 Area 339a Area 339b Area 340 Electronic Device 342 External Connection Port 349 Housing 350R Light Emitting Element 351R Lower Electrode 352 Upper Electrode 353 EL Layer 353a EL Layer 353b EL Layer 354 Intermediate Layer 360 Adhesive Layer 367BM Light Shielding Layer 367p Anti-Reflection Layer 367R Coloring Layer 380B Light Emitting Unit 380G Light Emitting Unit 380R Light Emitting Unit 390 Touch Panel 501 Display Unit 505 Touch Panel 505B Touch Panel 509 FPC 590 Substrate 591 Electrode 592 Electrode 593 Insulating Layer 594 Wiring 595 Touch Sensor 597 Adhesive Layer 598 Wiring 599 Connection Layer 701 Substrate 703 Adhesive Layer 705 Insulating Layer 711 Substrate 713 Adhesive Layer 715 Insulating Layer 804 Light Emitting Section 806 Drive Circuit Section 808 FPC 814 Conductive layer 815 Insulating layer 817 Insulating layer 817a Insulating layer 817b Insulating layer 820 Transistor 821 Insulating layer 822 Adhesive layer 823 Spacer 824 Transistor 825 Connector 830 Light-emitting element 831 Lower electrode 832 Optical adjustment layer 833 EL layer 835 Upper electrode 845 Coloring layer 847 Light-shielding layer 849 Overcoat 856 Conductive layer 857 Conductive layer 857a Conductive layer 857b Conductive layer 4001 Substrate 4002 Pixel section 4003 Signal line drive circuit 4004 Scan line drive circuit 4005 Sealing material 4006 Substrate 4008 Liquid crystal layer 4010 Transistor 4011 Transistor 4013 Liquid crystal element 4014 Wiring 4015 Electrode 4018 FPC 4018a FPC 4018b FPC 4019 Anisotropic conductive layer 4020 Insulating layer 4022 Insulating layer 4023 Insulating layer 4030 Electrode 4031 Electrode 4032 Insulating layer 4033 Insulating layer 4035 Spacer

Claims

【Claim 1】 A display device having a first display panel and a second display panel, wherein the first display panel has a first region, the first region has a function of performing display, the second display panel has a second region and a third region, the second region has a function of performing display, the third region is adjacent to the second region and has a function of transmitting visible light, the display device has a first portion, in the first portion, at least the third region of the first display panel and the second display panel overlap each other, A display device, wherein the area of the first portion is variable.

Images