Display device

Abstract

To provide a display device with a wide display area in which a joint line is less recognizable.SOLUTION: A display device includes two display panels overlapping with each other. The upper display panel includes a first display region and a region transmitting visible light. The lower display panel includes a second display region and a region blocking visible light. The second display region overlaps with the region transmitting visible light on a surface side performing display. The region blocking visible light overlaps with the first display region. The lower display panel includes a third display region between the second display region and the region blocking visible light. A gate signal and a source signal supplied to a first pixel in the third display region are equal to a gate signal and a source signal supplied to a second pixel in the second display region. The second pixel is closest to the first pixel among the pixels in the second display region.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] One embodiment of the present invention relates to a display device having a plurality of display panels.

[0002] Note that one embodiment of the present invention is not limited to the above technical field. Examples of the semiconductor device include a semiconductor device, a display device, a light-emitting device, a power storage device, a memory device, an electronic device, a lighting device, Input devices (e.g., touch sensors), input / output devices (e.g., touch panels), etc. These driving methods or manufacturing methods can be cited as examples. [Background technology]

[0003] In recent years, there has been a demand for larger display devices. Garden television equipment (also called television or television receiver), digital signage Digital Signage, Public Information Device (PID) The larger the display area of ​​the display device, the The larger the display area, the more information can be provided to the user. For example, it is expected that this will improve the effectiveness of advertising.

[0004] Electroluminescence (hereinafter referred to as EL) Light-emitting elements (also referred to as EL elements) that utilize the phenomenon are easy to make thin and lightweight. It has the features of being able to respond quickly to the Applications to display devices are being considered. For example, Patent Document 1 discloses a display device in which an organic EL element is applied. , a flexible light emitting device is disclosed. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-197522 Summary of the Invention [Problem to be solved by the invention]

[0006] An object of one embodiment of the present invention is to increase the size of a display device. An object of the present invention is to provide a display device having a wide display area in which seams are less visible. Another object of one embodiment of the present invention is to provide a display device with excellent viewability. Another object of one embodiment of the present invention is to reduce the thickness or weight of a display device. An object of one embodiment of the present invention is to provide a display device capable of displaying images along a curved surface. Another object of one embodiment of the present invention is to provide a highly reliable display device. It shall be one.

[0007] The description of these problems does not preclude the existence of other problems. It is not necessary for the embodiments to solve all of these problems. It is possible to extract other problems from the description of the claim. [Means for solving the problem]

[0008] A display device according to one embodiment of the present invention includes a first display panel and a second display panel. The display panel has a first display area and an area that transmits visible light. The display panel has a second display area, a third display area, and an area that blocks visible light. The third display area is adjacent to the area that transmits visible light. The first display area is located between the light-blocking area and the second display area, and is adjacent to the light-blocking area. The display area 2 overlaps with the area that transmits visible light on the display side. The first display area overlaps the first display area. At least one of the first display area and the area that transmits visible light The second display area has m rows and n columns (m and n are independent). The third display area has a plurality of pixels arranged vertically in a matrix (an integer of 2 or more). The third display area has a plurality of pixels arranged in the n-th column of the second display area. The signal is supplied to the pixel in the i-th row (i is an integer between 1 and m) of the adjacent third display area. The gate signal and source signal are supplied to the pixel in the ith row and nth column of the second display area. Equal to the gate signal and the source signal.

[0009] In the above, the pixel in the ith row and nth column of the second display region has a first light-emitting element and a first The pixel in the i-th row of the third display region has a driving transistor, and the pixel in the i-th row has a second light-emitting element and It is preferable to have a second driving transistor. The drain of the second driving transistor is electrically connected to the first light emitting element. The drain is electrically connected to the second light-emitting element.

[0010] The area of ​​the second light emitting element is preferably larger than the area of ​​the first light emitting element. The ratio W / L of the channel length (L) to the channel width (W) of the second driving transistor is It is preferable that it is larger than the W / L of the drive transistor.

[0011] The first driving transistor is a single gate type, and the second driving transistor is a dual gate type. The algate type is preferred.

[0012] The second display panel has a plurality of source lines, and the source lines from the n+1th column onwards are connected to the nth column source lines. It is preferable to connect it to a source line.

[0013] Alternatively, in the above, the pixel in the ith row and the nth column of the second display region includes a first light-emitting element, a third display area including a first driving transistor and a selection transistor, The pixel has a second light emitting element and a second driving transistor, and a first driving transistor The source or drain of the second driving transistor is electrically connected to the first light-emitting element. The source or drain of the selection transistor is electrically connected to the second light-emitting element. The gate or drain of the first drive transistor and the gate of the second drive transistor are connected to each other. It is preferable that the wiring is electrically connected to the wiring.

[0014] Alternatively, in the above, the pixel in the ith row and the nth column of the second display region includes a first light-emitting element, a third display area including a first driving transistor and a selection transistor, The pixel has a second light emitting element, and the source or drain of the first driving transistor is A selection transistor is electrically connected to the pixel electrode of the first light-emitting element and the pixel electrode of the second light-emitting element. The source or drain of the first drive transistor is electrically connected to the gate of the first drive transistor. It is preferable.

[0015] The pixel in the i-th row of the third display area is the same as the pixel in the i-th row and the n-th column of the second display area. It is preferable that the colors are the same.

[0016] Furthermore, the third display area has a plurality of pixels arranged in the row direction, and the third display area The pixel in the jth column (j is 1 or greater) of the third display area is adjacent to the pixel in the mth row of the second display area. The gate signal and the source signal supplied to the upper (nth) pixel are It is preferable that the gate signal and source signal supplied to the pixel in the mth row and jth column are equal to .

[0017] In the above, the pixel in the mth row and jth column of the second display region has a third light-emitting element and a third The j-th pixel in the third display region has a driving transistor, and a fourth light-emitting element and It is preferable to have a fourth driving transistor. The drain of the fourth driving transistor is electrically connected to the third light emitting element. The drain is electrically connected to the fourth light-emitting element.

[0018] The area of ​​the fourth light emitting element is preferably larger than the area of ​​the third light emitting element. , the W / L of the fourth driving transistor is larger than the W / L of the third driving transistor. It is preferable.

[0019] The third driving transistor is a single gate type, and the fourth driving transistor is a dual gate type. The algate type is preferred.

[0020] The second display panel has a plurality of gate lines, and the gate lines on the m+1th row and after are It is preferable that the signal line is connected to the ground line.

[0021] Alternatively, in the above, the pixel in the m-th row and the j-th column of the second display region includes a third light-emitting element, a third driving transistor and a selection transistor, and a j-th column of the third display area; The pixel has a fourth light emitting element and a fourth driving transistor, and a third driving transistor The source or drain of the fourth driving transistor is electrically connected to the third light-emitting element. The source or drain of the selection transistor is electrically connected to the fourth light-emitting element. The gate or drain of the third drive transistor and the gate of the fourth drive transistor are connected to each other. It is preferable that the wiring is electrically connected to the wiring.

[0022] Alternatively, in the above, the pixel in the m-th row and the j-th column of the second display region includes a third light-emitting element, a third display region including a selection transistor and a third drive transistor; The pixel has a fourth light emitting element, and the source or drain of the third driving transistor is connected to the fourth a selection transistor electrically connected to the pixel electrode of the third light-emitting element and the pixel electrode of the fourth light-emitting element; The source or drain of the third driving transistor is electrically connected to the gate of the third driving transistor. It is preferable.

[0023] The pixel in the jth column of the third display area is the same as the pixel in the mth row and the jth column of the second display area. It is preferable that the colors are the same.

[0024] The second and third display areas are arranged in a total of m+x rows and n+y columns (x and y are independent). The gates supplied to the pixels in the m+1th row and n+1th column are The gate signal and source signal are the gate signal and source signal supplied to the pixel in the mth row and nth column. Preferably they are equal.

[0025] The area of ​​the light emitting element of the pixel in the (m+1)th row and the (n+1)th column is In this case, the area of ​​the pixel in the (m+1)th row and the (n+1)th column is preferably larger than the area of ​​the pixel. The W / L of the driving transistor is smaller than the W / L of the driving transistor in the pixel in the mth row and nth column. Preferably, it is large.

[0026] The driving transistor of the pixel in the mth row and the nth column is a single gate type. The driving transistors of the pixels in the first column are preferably dual gate type.

[0027] It is preferable that the pixels on the m+1th row and the n+1th column have the same color as the pixel on the mth row and the nth column. stomach.

[0028] A display device according to one embodiment of the present invention includes a first display panel and a second display panel. The display panel has a first display area and an area that transmits visible light. The display panel has a second display area and an area that blocks visible light. The second display area is adjacent to the transparent area. The second display area is adjacent to the visible light blocking area. The area overlaps with the area that transmits visible light on the display side. The second display area is an area of ​​m rows and n columns (m and n are each independently an integer greater than or equal to 2). The visible light blocking region is adjacent to the pixel in the nth column. The pixel in the ith row and the n-1th column has a first light-emitting element and a first driving transistor. The pixel in the second column has a second light-emitting element and a second driving transistor. The source or drain of the second driving transistor is electrically connected to the first light emitting element. The source or drain of the transistor is electrically connected to the second light-emitting element. The area of ​​the second light emitting element is larger than the area of ​​the first light emitting element.

[0029] The W / L of the second driving transistor is larger than the W / L of the first driving transistor. It is preferable that:

[0030] The first driving transistor is a single gate type, and the second driving transistor is a dual gate type. The algate type is preferred.

[0031] The visible light blocking region is adjacent to the pixel in the mth row of the second display region, and is located in the mth row and jth column (j is 1 or more, n The area of ​​the light-emitting element of the pixel in the (m-1)th row and jth column is the area of ​​the light-emitting element of the pixel in the (m-1)th row and jth column. It is preferable that the area of ​​the substrate is larger than that of the substrate.

[0032] The W / L of the driving transistor of the pixel in the mth row and jth column is It is preferable that it is larger than the W / L of the drive transistor.

[0033] The driving transistor of the pixel in the (m-1)th row and the jth column is a single-gate type. The driving transistor of the eye pixel is preferably a dual gate type.

[0034] One embodiment of the present invention is a display device including any one of the above display devices, an antenna, a battery, a housing, a camera, An electronic device having at least one of a speaker, a microphone, and an operation button. . [Effects of the Invention]

[0035] According to one embodiment of the present invention, a display device can be made larger. It is possible to provide a display device having a wide display area in which seams are difficult to see. According to one embodiment of the present invention, a display device with excellent viewability can be provided. According to one embodiment of the present invention, a display device can be made thinner or lighter. According to one aspect of the present invention, a display device capable of displaying images along a curved surface can be provided. According to one embodiment of the present invention, a highly reliable display device can be provided.

[0036] The description of these effects does not preclude the existence of other effects. The embodiments do not necessarily have all of these effects. From the description of the section, it is possible to extract other effects. [Brief explanation of the drawings]

[0037] [Figure 1] FIG. 2 is a top view showing an example of a display panel. [Figure 2] FIG. 1 is a top view illustrating an example of a display device. [Figure 3] FIG. 1 is a top view illustrating an example of a display device. [Figure 4] FIG. 1 is a top view showing an example of a display panel and a display device. [Figure 5] FIG. 1 is a top view showing an example of a display panel and a display device. [Figure 6] FIG. 2 is a top view showing an example of a display panel. [Figure 7] FIG. 1 is a top view illustrating an example of a display device. [Figure 8] FIG. 1 is a top view illustrating an example of a display device. [Figure 9] FIG. 1 is a top view showing an example of a display panel and a display device. [Figure 10] FIG. 1 is a top view showing an example of a display panel and a display device. [Figure 11] FIG. 2 is a circuit diagram showing an example of connection between a pixel and a driver circuit. [Figure 12] FIG. 2 is a circuit diagram showing an example of connection between a pixel and a driver circuit. [Figure 13] FIG. 2 is a circuit diagram showing an example of connection between a pixel and a driver circuit. [Figure 14] FIG. 2 is a circuit diagram showing an example of connection between a pixel and a driver circuit. [Figure 15] FIG. 2 is a circuit diagram showing an example of connection between a pixel and a driver circuit. [Figure 16] FIG. 2 is a circuit diagram showing an example of connection between a pixel and a driver circuit. [Figure 17] FIG. 2 is a circuit diagram showing an example of connection between a pixel and a driver circuit. [Figure 18] FIG. 2 is a circuit diagram showing an example of connection between a pixel and a driver circuit. [Figure 19] FIG. 1 is a circuit diagram showing an example of a pixel. [Figure 20] FIG. 2 is a top view showing an example of a pixel. [Figure 21] FIG. 2 is a top view showing an example of a pixel. [Figure 22] 1A and 1B are diagrams for explaining the arrangement of pixels and the arrangement of a display region of a display element; [Figure 23] 1A and 1B are diagrams for explaining the arrangement of pixels and the arrangement of a display region of a display element; [Figure 24] FIG. 1 is a perspective view showing an example of a display device. [Figure 25] FIG. 1 is a top view illustrating an example of a display device. [Figure 26] FIG. 1 is a cross-sectional view showing an example of a display device. [Figure 27] FIG. 1 is a cross-sectional view showing an example of a display device. [Figure 28] 1A and 1B are a top view and a cross-sectional view illustrating an example of a display panel. [Figure 29] 1A and 1B are a top view and a cross-sectional view illustrating an example of a display panel. [Figure 30] 1A and 1B are a top view and a cross-sectional view illustrating an example of a display panel. [Figure 31] FIG. 1 is a cross-sectional view showing an example of a display device. [Figure 32] 1A to 1C are cross-sectional views illustrating an example of a method for manufacturing a display panel. [Figure 33] 1A to 1C are cross-sectional views illustrating an example of a method for manufacturing a display panel. [Figure 34] FIG. 1 is a cross-sectional view showing an example of a display panel. [Figure 35] FIG. 1 is a cross-sectional view showing an example of a display panel. [Figure 36] FIG. 1 is a perspective view showing an example of a touch panel. [Figure 37]FIG. 1 is a cross-sectional view showing an example of a touch panel. [Figure 38] 1A and 1B are a cross-sectional view illustrating an example of a touch panel, and a top view and a cross-sectional view of a transistor. [Figure 39] FIG. 1 is a cross-sectional view showing an example of a touch panel. [Figure 40] FIG. 1 is a cross-sectional view showing an example of a touch panel. [Figure 41] FIG. 1 is a cross-sectional view showing an example of a touch panel. [Figure 42] FIG. 1 is a perspective view showing an example of a touch panel. [Figure 43] FIG. 1 is a cross-sectional view showing an example of a touch panel. [Figure 44] FIG. 1 is a cross-sectional view showing an example of a touch panel. [Figure 45] 1A and 1B illustrate examples of electronic devices and lighting devices. [Figure 46] 1A and 1B are diagrams illustrating examples of electronic devices. [Figure 47] 10A to 10C illustrate examples of use of a display device and an electronic device. DETAILED DESCRIPTION OF THE INVENTION

[0038] The embodiments will be described in detail with reference to the drawings. However, the present invention is not limited to the following description. The present invention is not limited to the above embodiments, and various changes and modifications may be made in the form and details thereof without departing from the spirit and scope of the present invention. It will be readily understood by those skilled in the art that the present invention can be achieved by the following embodiments. It should not be construed as being limited to the contents described.

[0039] 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.

[0040] 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.

[0041] 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."

[0042] (Embodiment 1) In this embodiment, a display device of one embodiment of the present invention will be described with reference to FIGS.

[0043] By arranging multiple 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.

[0044] 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. This eliminates the need to use new manufacturing equipment for enlarging the display device, and This reduces manufacturing costs and also prevents the decline in yield that accompanies larger display panels. can.

[0045] When the size of the display panel is the same, a display device with multiple display panels can be used. A display device with a display panel has a larger display area and can display more information at one time. It has the following effects:

[0046] However, each display panel has a non-display area surrounding the display area. When output images of a plurality of display panels are combined to display one image, the one image is , the images will be perceived as separate by the user of the display device.

[0047] By narrowing the non-display area of ​​each display panel (using a display panel with a narrow frame), This can prevent the display of the panel from appearing separated, but it also completely eliminates the non-display area of ​​the display panel. It is difficult to do so.

[0048] Furthermore, if the area of ​​the non-display region of the display panel is small, the edges of the display panel and the elements in the display panel may be separated. The distance between the display panel and the substrate is short, and impurities entering from outside the display panel can easily cause deterioration of the element. This may be the case.

[0049] Thus, in one embodiment of the present invention, a plurality of display panels are arranged so that they partially overlap each other. Of the two display panels, at least the display panel located on the display surface side (upper side) is In one aspect of the present invention, the display device has a transparent region adjacent to the display region. The display area of ​​the display panel overlaps with the area of ​​the display panel arranged above that transmits visible light. Therefore, it is possible to reduce the non-display area between the display areas of two overlapping display panels, and This makes it difficult for users to notice the seams of the display panel. Therefore, a large display device can be realized.

[0050] At least a part of the non-display area of ​​the upper display panel is an area that transmits visible light. This allows the display area of ​​the display panel located below to overlap with that of the display panel located below. At least a part of the non-display area of ​​the display panel is the display area of ​​the display panel located above, or These areas can overlap with the areas that block visible light. Since this does not affect the size (reduction of the area other than the display area), there is no need to reduce the area.

[0051] If the non-display area of ​​the display panel is large, the distance between the edge of the display panel and the elements within the display panel becomes long. This makes it possible to prevent the element from deteriorating due to impurities entering from outside the display panel. For example, when organic EL elements are used as display elements, the edges of the display panel and the organic EL The longer the distance from the element, the more impurities such as moisture or oxygen from outside the display panel will penetrate into the organic EL In the display device according to one embodiment of the present invention, Since the non-display area of ​​the display panel has sufficient area, it is possible to use a display panel that uses organic EL elements, etc. Even if the device is applied, a highly reliable large-sized display device can be realized.

[0052] Here, after placing two display panels one on top of the other, the relative positions of the two display panels may change. In addition, the higher the density of pixels provided in the display area of ​​the display panel, the more difficult it is to High precision is required for alignment, so when placing two display panels on top of each other, The rail is more likely to slip out of position.

[0053] At this time, the relative positions of the two display panels shift in the direction in which they move apart. and the non-display area of ​​the lower display panel is in contact with the visible light of the upper display panel. In other words, in the display device, there is a non-transparent area between the display areas of the two display panels. For example, a driver circuit or wiring in the vicinity of the display area may This makes it easier for the user of the display device to see the output images of the two display panels. When displaying a single image using a single image, the user may feel that the image appears to be separated. Wow.

[0054] Therefore, in one aspect of the present invention, a display panel disposed on the lower side has a display area and a visible area. Extra pixels (also called dummy pixels) are provided between the light-blocking area and the The dummy pixel has the same color as the pixel closest to it in the display area. The gate signal and source signal are supplied to the pixel closest to the dummy pixel in the display area. The gate signal and source signal are the same as those supplied. The two display panels are shifted apart. and the dummy pixels of the lower display panel are irradiated with the visible light of the upper display panel. By using these dummy pixels to display images, the two display panels Even if there is a misalignment in the direction of separation between the two overlapping display panels, This can prevent a non-display area from being formed between the display areas of the display. This makes it possible to realize a large display device in which the seams of the display panels are hardly noticeable.

[0055] Alternatively, in one embodiment of the present invention, a region that blocks visible light in a display panel disposed on the lower side The area of ​​the display element (which can also be said to be the area of ​​the display region of the display element) of the adjacent pixel is The area of ​​the display element of each pixel is made larger than the area of ​​the display element of the pixel. When the pixel on the lower display panel is turned on, the pixel adjacent to the area blocking visible light is turned off. The area that overlaps with the area that transmits visible light of the display panel on which it is placed becomes large. Even if the display area is large, it is possible to prevent a non-display area from being formed between the display areas of two overlapping display panels. This allows for the realization of a large display device in which the seams of the display panel are difficult for users to notice. It can be realized.

[0056] Specific examples of the display panel and the display device of one embodiment of the present invention will be described below.

[0057] <Configuration example A> FIG. 1A shows a top view of a display panel 100. FIG.

[0058] The display panel 100 shown in FIG. 1A includes a display area 101, a display area 109, and an area 10 2. Here, the area 102 is the display area 10 The area 102 may be called a non-display area. do.

[0059] The region 102 has a region 110 that transmits visible light and a region 120 that blocks visible light. The light transmitting area 110 is adjacent to the display area 101. The display area 109 is adjacent to the display area 101. The display area 109 is located between the visible light blocking area 101 and the visible light blocking area 120, and is adjacent to both. The light transmitting area 110 and the visible light blocking area 120 are respectively It may be provided along a portion of the outer periphery.

[0060] In the display panel 100 shown in FIG. 1A, the display area 109 is arranged along one side of the display area 101. The display panel 100 has a display area 109 arranged along one side of the display area 101. It can be arranged along the above lines.

[0061] In the display panel 100 shown in FIG. 1A, a region 110 that transmits visible light is formed in the display region 10 The display panel 100 has a visible light transmitting region 110. can be arranged along one or more sides of the display area 101. As shown in FIG. 1A, the display panel 100 is in contact with the display area 101 and is located at the edge of the display panel 100. It is preferable that up to

[0062] A visible light transmitting region 110 is formed along one of the two opposing sides of the display region 101. is arranged along the other side, and a display area 109 is arranged along the other side.

[0063] In the display panel 100 shown in FIG. 1A, the region 120 that blocks visible light is The display panel 100 has a visible light blocking area 120 arranged along two sides. It can be provided up to the vicinity of the edge of the panel 100.

[0064] In the region 102 shown in FIG. 1(A), a region 110 that transmits visible light and a region 111 that blocks visible light are The transmittance of visible light in areas other than the area 120 is not an issue.

[0065] The display area 101 includes a plurality of pixels arranged in a matrix, and is capable of displaying an image. Each pixel is provided with one or more display elements. Examples of the display elements include: Light-emitting elements such as EL elements, electrophoretic elements, MEMS (microelectromechanical systems) A display element using a liquid crystal display (LCD) or a liquid crystal display (LCD) can be used. The following mainly describes the case where an EL element is used.

[0066] The display area 109 includes a plurality of pixels arranged in one or more directions and is capable of displaying an image. Each pixel is provided with one or more display elements. The display area 109 can use the same display elements as the area 101. It can also be said to have.

[0067] The visible light transmitting region 110 is made of a material that transmits visible light. The region 110 includes, for example, a substrate and an adhesive layer that constitute the display panel 100. The higher the visible light transmittance of the transparent region 110, the more efficient the light extraction of the display panel that overlaps it. In the region 110 that transmits visible light, the wavelength of 450 nm is The average transmittance of light in the range of 700 nm or more is preferably 70% or more, and more preferably 80% or more. It is more preferable that the ratio is 90% or more, and even more preferable that the ratio is 90% or more.

[0068] The visible light blocking area 120 includes, for example, pixels included in the display area 101 (specifically, Wiring is provided to electrically connect to the display element (transistor or display element, etc.). In addition to the wiring, a driver circuit (scanning line driver circuit or signal line driver circuit, etc.) for driving the pixels can be set up.

[0069] The display panel may have at least one of a scanning line driver circuit and a signal line driver circuit. Alternatively, the display panel may have a structure that does not include both a scanning line driver circuit and a signal line driver circuit. For example, at least one of the scanning line driver circuit and the signal line driver circuit may be An integrated circuit (IC) that functions as a display panel can be electrically connected to the display panel. A display device having a display panel and an IC can be manufactured. Displayed by the Chip On Glass method or the COF (Chip On Film) method Alternatively, the IC can be mounted on a flexible printed circuit board. Substrate (Flexible printed circuit, hereinafter referred to as FPC), TA B (Tape Automated Bonding), or TCP (Tape Car The display device can be made of a PDP (Platform Package) or the like.

[0070] The visible light blocking area 120 includes terminals (also called connection terminals) for electrical connection with an FPC or the like, and wiring electrically connected to the terminals. Note that the terminals and wiring are transparent to visible light. In this case, the terminals and wiring are arranged so as to extend to the region 110 that transmits visible light. It can be set up as follows.

[0071] Here, the width W1 of the region 110 that transmits visible light shown in FIG. 1(A) is 0.1 mm or more and 15 mm or less. It is preferable that the thickness is 0.0 mm or less, more preferably 0.5 mm or more and 100 mm or less, and more preferably 1 mm or more It is more preferable that the width W1 of the region 110 that transmits visible light is 50 mm or less. If the display varies depending on the location or even on a single display panel, It is preferable that the length of the visible light transmitting region 110 is within the above range. Therefore, the larger the width W1 of the region 110 that transmits visible light, the larger the display panel 100 The distance between the edge of the display area 101 and the display area 101 can be increased, and impurities such as water can be prevented from entering the display area 101 from the outside. It is possible to prevent the visible light from penetrating into the region 101. The width W1 of the area 110 corresponds to the shortest distance from the display area 101 to the edge of the display panel 100. This may occur.

[0072] For example, when an organic EL element is used as the display element, the width of the region 110 that transmits visible light is By setting W1 to 0.5 mm or more, it is possible to effectively suppress the deterioration of the organic EL element. In addition, in the area other than the area 110 that transmits visible light, In this case, the distance between the edge of the display area 101 and the edge of the display panel 100 is set to be within the above range. It is preferable to set

[0073] The width W2 of the display area 109 shown in FIG. 1(A) is preferably 0.1 mm or more and 5 mm or less. Preferably, the thickness is 0.5 mm or more and 5 mm or less, and more preferably, 1 mm or more and 5 mm or less. The larger the width W2 of the display area 109, the greater the tolerance for misalignment when two display panels are overlapped. The range is widened, which is preferable. If the width of one pixel is larger than 5 mm, the display area 1 The width W2 of 09 can also be greater than 5 mm.

[0074] When the width W2 of the display area 109 varies depending on the display panel, or when the width W2 of the display area 109 varies depending on the display panel, If the width W2 is different depending on the location, the shortest length can be used as the width W2.

[0075] 1(B) and 1(C) each show an example of an enlarged view of region P1 in FIG. 1(A).

[0076] As shown in FIGS. 1B and 1C, the display area 101 has a plurality of pixels 141 arranged in a matrix. The display panel is capable of full color display using three colors: red, green, and blue. In the case of the pixel 100, each of the pixels 141 is a sub-pixel of one of the above three colors. In addition to the above three colors, sub-pixels of white or yellow may also be provided.

[0077] In this embodiment, the display area 101 has pixels 141 arranged in m rows and n columns (m and n are independent of each other). The display area 109 is an example where the pixels are arranged in a number equal to or larger than 1. 49. When describing the pixel in row a and column b, (a, b) is added after the symbol. do.

[0078] In this embodiment, the horizontal direction of the drawing is the row direction and the vertical direction is the column direction. The row direction and the column direction can be interchanged. The row direction may be either the direction of the pixel electrodes or the direction of the scanning lines. The following description will be given assuming that the first row and the leftmost column are the first rows, but this is not limited to this. You can also use the first row or the rightmost column as the first column.

[0079] In FIGS. 1B and 1C, the pixel 141 in the nth column (i.e., the column at the edge of the display area 101) The pixel 149 is provided adjacent to the pixel 141 in the column direction. The above arrangement is possible. FIG. 1B shows an example in which one column of pixels 149 is provided. ) shows an example having two columns of pixels 149.

[0080] When the pixels 149 are provided in multiple rows or columns, the position of the two display panels when they are overlapped can be adjusted. This is preferable as it widens the allowable range.

[0081] In FIG. 1B, the pixel 141(i,n) (i is an integer between 1 and m) is located to the left of the pixel Pixel 141(i,n-1) is located, and pixel 149(i,n+1) is located to the right. Similarly, pixel 141(i+1,n-1) is located to the left of pixel 141(i+1,n). , and pixel 149(i+1,n+1) is located immediately to the right.

[0082] In FIG. 1C, pixel 149(i,n+1) is located to the right of pixel 141(i,n). To the right of pixel 149(i,n+1) is pixel 149(i,n+2). Similarly, pixel 149(i+1,n+1) is located to the right of pixel 141(i+1,n), Pixel 149(i+1,n+2) is located to the right of pixel 149(i+1,n+1). do.

[0083] The pixel 149 in the i-th row has the same color as the pixel 141 in the i-th row and n-th column. The gate signal and source signal supplied to 149 are supplied to the pixel 141 in the ith row and nth column. The gate signal and the source signal are equal to each other. It outputs light of the same color as pixel 141, at the same timing, and with the same brightness. Even if the two overlapping display panels are misaligned, the display will be displayed at the boundary between the two display panels. For example, in FIG. 1B, pixel 149 (i ,n+1) is the same color as pixel 141(i,n). The gate signal and source signal supplied to the pixel 141(i,n) are In FIG. 1C, pixel 149(i,n+1) and pixel 149(i,n+2) is the same color as pixel 141(i,n). The gate and source signals supplied to the pixel 149(i,n+2) and the pixel 149(i,n+3) are 1(i,n) are equal to the gate and source signals supplied to the

[0084] FIG. 2A shows a top view of a display device 10. The display device of one embodiment of the present invention has one or more The display device 10 shown in FIG. 1(A) shows two display panels 100. Specifically, the display device 10 has The display panel 100 includes a display module 100a and a display panel 100b.

[0085] In this embodiment, the display panels and the components included in the display panels In order to distinguish between the display panels or between the components related to each display panel, an alphabet is added after the reference numeral. The following explanations will be given with the font added. Unless otherwise specified, the bottom side (opposite the display surface) The display panel or component placed on the top side is marked with "a" and the one placed above it is marked with "b." The above display panels and their components are labeled "b", "c", and "alpha" from the bottom up. The items will be listed in alphabetical order.

[0086] In the display device 10, an FPC 112b is connected to the display panel 100b. An IC 115b is electrically connected to the display panel 100b via an FPC 112b. Similarly, an IC is electrically connected to the display panel 100a via an FPC.

[0087] The display panel 100a has a display area 101a, a display area 109a, and an area 102a. The region 102a has a region 120a that blocks visible light. For example, the display panel 100a may have a region 110a that is further displayed below the display panel 100a. When the display panel is arranged, the area 102a has an area 110a that transmits visible light. is preferred.

[0088] The display panel 100b has a display area 101b and an area 102b. The area 102b has: The display panel 10 has a region 110b that transmits visible light and a region 120b that blocks visible light. For example, the display panel 100b may have a display area 109b on the upper side thereof. When a display panel is further arranged, the display panel 100b has a display area 109b. is preferred.

[0089] The display panel 100b is disposed so that a part of it overlaps the upper side (display surface side) of the display panel 100a. Specifically, the display panel 100a is provided with a display area 101a on the display panel 100a. The display panel 1 is arranged so that the regions 110b that transmit visible light of the display panel 1b overlap each other. If the area 120b of the display panel 100b that blocks visible light overlaps the display area 101a of the display panel 100a, In addition, the area 120a of the display panel 100a that blocks visible light is arranged so that the The display areas 101b of the display panels 100b are arranged to overlap each other.

[0090] Since the area 110b that transmits visible light overlaps the display area 101a, the display panel 100 Even if the display area b overlaps the display surface of the display panel 100a, the user of the display device 10 can The entire display of the area 101a can be viewed.

[0091] Moreover, the display area 101b of the display panel 100b overlaps the area 120a that blocks visible light. As a result, there is no non-display area between the display area 101a and the display area 101b. Therefore, the area where the display areas 101a and 101b are arranged seamlessly is called the display area of ​​the display device 10. It is possible to make it a display area 13.

[0092] FIG. 2B shows an example of an enlarged view of the region Q1 in FIG. 2A.

[0093] In FIG. 2B, as an example, the n-2th column, the n-1st column, and the n-3rd column of the display panel 100a are 10 shows a case where a region 110b that transmits visible light overlaps with a pixel 141a in the n-th column.

[0094] In FIG. 2B, the nth column of the display panel 100a, which is the column closest to the display panel 100b, The pixel 141a in the column closest to the display panel 100a in the display panel 100b. 2B, the pixel 141b in the first column is adjacent to the pixel 141b in the first column. 10 shows an ideal state in which the display panel 100a and the display panel 100b overlap without any misalignment.

[0095] When the display panel 100a and the display panel 100b are overlapped as shown in FIGS. 2(A) and 2(B), A user of the display device 10 does not see any area blocking visible light near the boundary between the two display panels. Therefore, the seams of the display panels are less visible to the user.

[0096] Next, from the state of FIG. 2(A), the display panel 100a moves away from the display panel 100b. FIG. 3(A) shows a top view of the display device 10 when the display device 10 is misaligned. 1 shows an example of an enlarged view of a region Q2 in FIG.

[0097] In FIG. 3A, a display area 101a and a display area 109a of a display panel 100a are displayed. The regions 110b of the display panels 100b that transmit visible light overlap.

[0098] As described above, the display panel 100a has a display area 101a and a visible light blocking area 120a. The display panel 100a has a display area 109a. When the area is shifted in a direction away from b, the area that transmits visible light is on the area 120a that blocks visible light. In other words, the seam of the display panel is not visible to the user. This can prevent the material from becoming easily damaged.

[0099] In FIG. 3B, the pixel 141a in the nth column and the pixel 141b in the 1st column, which were adjacent in FIG. 2B, A part of the pixel 149a is located between the pixel 141b. For example, the pixel 141a(i,n Pixel 149(i,n+1) is located between pixel 141b(i,1) and pixel 141b(i,n+1).

[0100] When the display panel 100a and the display panel 100b are overlapped as shown in FIGS. 3(A) and 3(B), The user of the display device 10 will see at least part of the display area 109a near the boundary between the two display panels. Part of it is visible.

[0101] As described above, the pixel 149a in the i-th row has the same color as the pixel 141a in the i-th row and n-th column. The gate signal and source signal supplied to the pixel 149a in the i-th row are The gate signal and source signal supplied to the pixel 141a in the i-th row are the same as those supplied to the pixel 141b in the i-th row. 49a emits light of the same color as the pixel 141a in the ith row and nth column at the same timing and to the same extent. Therefore, the display area 101a and the display area 101b are outputted at the luminance level. This can prevent the image from appearing to be interrupted between 101b.

[0102] <Configuration example B> FIG. 4A shows a top view of the display panel 100, which is different from that shown in FIG. 1A. The display panel 100 differs from the configuration shown in FIG. 1(A) in that it does not have a display area 109. Note that the description of the same configuration as in FIG. 1(A) will be omitted.

[0103] The display panel 100 has a display area 101 and an area 102 .

[0104] The region 102 has a region 110 that transmits visible light and a region 120 that blocks visible light. The light transmitting area 110 and the visible light blocking area 120 are adjacent to the display area 101, respectively. To contact.

[0105] FIG. 4B shows an example of an enlarged view of region P2 in FIG. 4A.

[0106] In FIG. 4B, the area of ​​the pixel 141 in the nth column is larger than the area of ​​the pixel 141 in the (n-1)th column. For example, the area of ​​pixel 141(i,n) is larger than the area of ​​pixel 141(i,n-1). It's also big.

[0107] In one embodiment of the present invention, the area of ​​the display element of the pixel 141 in the n-th column is The area of ​​the display element of the pixel 141 in the nth column is set to be larger than the area of ​​the display element of the pixel 141 in the nth column. The larger the area of ​​the display panel, the wider the tolerance for misalignment when the two display panels are stacked. stomach.

[0108] Here, when a pixel has a light-emitting element as a display element, the pixel controls the current flowing in the light-emitting element. The drive transistor may be configured to control the The source or drain is connected to the light emitting element.

[0109] In FIG. 4B, the voltage supplied to the gate of the driving transistor of the pixel 141 in the nth column is The potential is the potential supplied to the gate of the driving transistor of the pixel 141 in the (n-1)th column. Therefore, the pixel 141 in the n-1th column and the pixel 141 in the nth column are preferably higher than The difference in brightness per unit area can be suppressed.

[0110] Alternatively, in FIG. 4B, the driving transistor of the pixel 141 in the n-th column is n-1 It is preferable that a larger current can flow through the driving transistor than that of the pixel 141 in the second column. This makes it possible to reduce the pixel area per unit area of ​​the pixels 141 in the (n-1)th column and the pixels 141 in the nth column. For example, you can reduce the difference in brightness by using a transistor that you want to pass a larger current through than the others. In this case, some transistors may be of the dual gate type and the other transistors may be of the single gate type. For example, if you want to pass a larger current through a transistor, you can set the channel length (L) and channel width ( The ratio W / L of the transistor can be made larger than that of other transistors.

[0111] When two display panels 100a and 100b are stacked, the lower display panel 100a has The pixel 141a in the nth column has the same area as the pixel 141a in the (n-1)th column, and the upper display panel 1 It is preferable that the area 110b of the display panel 100b be overlapped with the area 110b of the display panel 100b that transmits visible light. A part of the pixels 141a in the nth column of the display panel 100a is located in the display area 101 of the display panel 100b. Overlaps with b.

[0112] As shown in FIG. 4(C), the smaller the overlapping area between the two display panels, the smaller the display panel area. The pixel 141a in the nth column of the display panel 100a is located in the visible light transmitting region 1 of the display panel 100b. Even if the two display panels are displaced apart, the display area Therefore, the position of the display panel 101a can be prevented from being separated from the display area 101b. This can prevent the image from appearing cut off due to misalignment.

[0113] <Configuration example C> Figure 5(A) shows a modified example of Figure 1(B), and Figure 5(B) shows a modified example of Figure 3(B).

[0114] In FIG. 5A, the area of ​​the pixel 149 is larger than the area of ​​the pixel 141 in the n-th column. For example, the area of ​​pixel 149(i,n+1) is larger than the area of ​​pixel 141(i,n).

[0115] In one embodiment of the present invention, the area of ​​the display element of the pixel 149 is The larger the area of ​​the display element of the pixel 149, This is preferable because it widens the tolerance for misalignment when two display panels are superimposed.

[0116] Here, when the pixel has a light-emitting element as a display element, in FIG. 5(A), pixel 14 The potential supplied to the gate of the driving transistor of the pixel 141 in the nth column is It is preferable that the potential is higher than the potential supplied to the gate of the driving transistor. In A), the driving transistor of the pixel 149 is the same as the driving transistor of the pixel 141 in the n-th column. It is preferable that a larger current can flow through the pixel 1 than through the driving transistor. It is possible to suppress the difference in brightness per unit area between the pixel 49 and the pixel 141 in the n-th column.

[0117] As shown in FIG. 5(B), the smaller the overlapping area between the two display panels, the smaller the display panel area. The pixel 149a of the display panel 100a is connected to the area 110b of the display panel 100b that transmits visible light. The overlapping area becomes larger. The image is displayed in the display area 109a, which prevents the image from appearing to be broken between the image displayed in the display area 109a and the image displayed in the display area 109b. It can be controlled.

[0118] <Configuration example D> FIG. 6A shows a top view of the display panel 100, which is different from that shown in FIG. 1A. ) the description of the same configuration will be omitted.

[0119] The display panel 100 shown in FIG. 6A includes a display area 101, a display area 109, and an area 10 It has 2.

[0120] The region 102 has a region 110 that transmits visible light and a region 120 that blocks visible light. The light transmitting area 110 is adjacent to the display area 101. The display area 109 is adjacent to the display area 101. It is located between and adjacent to the region 01 and the region 120 that blocks visible light.

[0121] In the display panel 100 shown in FIG. 6A, the display area 109 is arranged along two sides of the display area 101. In FIG. 6A, the width W2 of the display area 109 is equal on two sides. However, the width W2 may be different depending on the side.

[0122] In the display panel 100 shown in FIG. 6A, the region 110 that transmits visible light is 6A, the width W of the region 110 that transmits visible light is Although the example shows a case where 1 is equal on two sides, the width W1 may be different depending on the side.

[0123] In the display panel 100 shown in FIG. 6A, the region 120 that blocks visible light is are arranged along two sides.

[0124] 6(B) and 6(C) show examples of enlarged views of region P3 in FIG. 6(A).

[0125] In FIG. 6B, adjacent to the pixel 141 in the mth row and the nth column, In FIG. 6B, a pixel 149 is provided on the left side of the pixel 141(m,n). Pixel 141(m,n-1) is located, and pixel 149(m,n+1) is located to the right. Furthermore, pixel 149(m+1,n) is located above pixel 141(m,n), and pixel 149(m+1,n) is located below pixel 141(m,n). Pixel 141(m-1, n) is located at .

[0126] Furthermore, in FIG. 6B, pixel 149(m+1,n) is located diagonally to the upper right of pixel 141(m,n). That is, the display area 101 and the display area 109 are provided with a total of m+ It has 1 row and n+1 columns of pixels.

[0127] In FIG. 6C, the display area 101 and the display area 109 together form a screen of m+2 rows and n+2 columns. In FIG. 6C, the pixel 149(m,n+) is located to the right of the pixel 141(m,n). 1) is located, and to the right of pixel 149(m,n+1) is pixel 149(m,n+2). Furthermore, pixel 149(m+1,n) is located immediately above pixel 141(m,n). However, pixel 149(m+2,n) is located immediately above pixel 149(m+1,n). In FIG. 6C, pixel 149(m+1,n+1) is located diagonally to the upper right of pixel 141(m,n). Pixel 149(m+2,n+2) is provided diagonally above and to the right of pixel 149(m+1,n+1). is provided.

[0128] The number of pixels 149 in the row direction may be different from the number of pixels 149 in the column direction. When the row direction and the column direction are different, the pixel 141 has a shorter side direction than the pixel 141 has a longer side direction. It is preferable to provide more pixels 149 than the number of pixels 149.

[0129] The pixel 149 in the i-th row (i is an integer between 1 and m) has the same color as the pixel 141 in the i-th row and n-th column. The gate signal and source signal supplied to the pixel 149 in the i-th row are The gate signal and source signal supplied to the pixel 141 in the i-th row are the same as those supplied to the pixel 141 in the i-th row. 49 emits light of the same color as the pixel 141 in the ith row and nth column at the same timing and with the same brightness. Output with.

[0130] The pixel 149 in the jth column (j is an integer between 1 and n) has the same color as the pixel 141 in the mth row and jth column. The gate signal and source signal supplied to the pixel 149 in the jth column are The gate signal and source signal supplied to pixel 141 in the jth column are equal to each other. 49 emits light of the same color as the pixel 141 in the mth row and jth column at the same timing and with the same brightness. Output with.

[0131] Pixels 149 on and after the m+1th row and the n+1th column have the same color as pixel 141(m,n). The gate signals and source signals supplied to the pixels 149 in the m+1th row and the n+1th column are The gate signal and source signal supplied to the pixel 141(m,n) are equal to each other. The pixels 149 on the +1th row and the n+1th column emit light of the same color as the pixel 141(m,n). The output is at the same timing and with the same brightness.

[0132] This allows for a clearer image even if two overlapping display panels are misaligned in the row or column direction. This prevents the image from appearing interrupted at the boundary between the two display panels.

[0133] For example, in FIG. 6B, pixel 149(m+1, n-1) is a pixel 141(m, n- The gate signal and the pixel 149(m+1, n-1) are the same color. The gate signal and source signal are the same as those supplied to pixel 141(m,n-1). In FIG. 6C, pixel 149(m+1, n) and pixel 149(m+2, n) are , pixel 141(m,n) has the same color as pixel 149(m+1,n). The gate signal and source signal supplied to pixel 49(m+2,n) are The gate and source signals are equal.

[0134] FIG. 7A shows a display device 10 having four display panels 100 shown in FIG. Specifically, the display device 10 includes display panels 100a, 100b, 100c, and 100d. do.

[0135] In FIG. 7A, the short sides of the display panels 100a and 100b overlap each other, forming a display area 10 A part of the region 110a and a part of the region 110b that transmits visible light overlap each other. The long sides of 100a and 100c overlap each other, and a part of the display area 101a and a visible light transmitting area 102a and 102b are formed. A portion of the region 110c overlaps.

[0136] In FIG. 7A, a part of the display region 101b is a part of the region 110c that transmits visible light. and overlaps with a part of the region 110d that transmits visible light. A portion of it overlaps with a portion of the region 110d that transmits visible light.

[0137] Therefore, as shown in FIG. 7(A), the display areas 101a to 101d are arranged seamlessly. The area thus obtained can be used as the display area 13 of the display device 10.

[0138] FIG. 7B shows an example of an enlarged view of the region Q3 in FIG. 7A.

[0139] In FIG. 7B, as an example, the n-2th column, the n-1st column, and the n-3rd column of the display panel 100a are The regions 110b and 110d that transmit visible light overlap the pixel 141a in the n-th column, The pixels 141a in the (m-2)th, (m-1)th, and (m)th columns of the display panel 100a are 1 shows a case where regions 110c and 110d that transmit visible light overlap.

[0140] In FIG. 7B, the nth column of the display panel 100a, which is the column closest to the display panel 100b, The pixel 141a in the column closest to the display panel 100a in the display panel 100b. The pixel 141b in the first column is adjacent to the pixel 141b in the first column. The pixel 141a in the mth row, which is the row on the display panel 100c side, and the pixel 141b in the mth row on the display panel 100c side The pixel 141c in the first row, which is the row closest to the display panel 100a, is adjacent to the pixel 141b in the second row. In addition, in the display panel 100c, the pixel 1 in the nth column, which is the column closest to the display panel 100d, 41c and the first column of the display panel 100d, which is the column closest to the display panel 100c. The pixel 141d is adjacent to the pixel 141a. The pixel 141b in the mth row on the 100d side and the pixel 141b in the most displayed area on the display panel 100d The pixel 141d in the first row on the panel 100b side is adjacent to the pixel 141d in the first row on the panel 100b side. (B) shows an ideal state in which four display panels 100 are stacked without any misalignment. do.

[0141] When four display panels are stacked as shown in FIGS. 7(A) and 7(B), the user of the display device 10 Therefore, the user cannot see the area blocking visible light near the boundary between the two display panels. The seams of the display panel are less visible.

[0142] Next, from the state of FIG. 7(A), the display panel 100a is rotated from the display panels 100b to 100d. FIG. 8(A) shows a top view of the display device 10 when it is displaced in a direction away from the display device 10. FIG. 8(B) shows An example of an enlarged view of region Q4 in FIG. 8(A) is shown.

[0143] In FIG. 8A, the display area 101a and the display area 109a of the display panel 100a are displayed. The regions 110b to 110d of the display panel 100b that transmit visible light overlap each other.

[0144] As described above, the display panel 100a has a display area 101a and a visible light blocking area 120a. The display panel 100a has a display area 109a. When the light source 100 is shifted in a direction away from the light sources 100b to 100d, the light source 100 transmits visible light onto the region 120a that blocks visible light. In other words, the overlapping of the display areas 110b to 110d can be prevented. This prevents the seams of the flannel from becoming more visible.

[0145] In FIG. 8B, the pixels in the nth column of the display panel 100a, which were adjacent in FIG. 7B, 141a and the first column of pixels 141b of the display panel 100b. Similarly, a part of the pixel 141a in the m-th row of the display panel 100a is located. and the pixel 141c in the first row of the display panel 100c. Furthermore, a part of pixel 141a(m,n) of the display panel 100a is located at the diagonal The pixel 141d(1,1) of the display panel 100d is located at the upper right and diagonally lower left position. A portion of pixel 149a of panel 100a is present.

[0146] When four display panels are stacked as shown in FIGS. 8(A) and 8(B), the user of the display device 10 The display panel 100b to 100d transmits visible light through the region 110 through which the visible light passes. At least a portion of display area 109a of panel 100a is visible.

[0147] As described above, the pixel 149 in the i-th row has the same color as the pixel 141 in the i-th row and the n-th column. The pixel 149 has the same color as the pixel 141 in the mth row and jth column. The gate signal and source signal to be supplied are the gate signal supplied to the pixel 141 in the ith row and nth column. The gate signal and source signal are equal to the j-th row pixel 149. are equal to the gate signal and source signal supplied to the pixel 141 in the mth row and jth column. Pixels 149 on and after the m+1th row and the n+1th column have the same color as pixel 141(m,n). The gate signals and source signals supplied to the pixels 149 in the m+1th row and the n+1th column are The signal is equal to the gate signal and source signal supplied to the pixel 141(m,n). As a result, pixel 149 emits light of the same color as the adjacent pixel 141 at the same timing and to the same extent. Therefore, the brightness of the two display panels stacked in the row or column direction is Even if there is misalignment, the image does not appear to be cut off at the boundary between the two display panels. do.

[0148] <Configuration example E> FIG. 9(A) shows a top view of the display panel 100, which is different from that shown in FIG. 6(A). The display panel 100 differs from the configuration shown in FIG. 6(A) in that it does not have a display area 109. Note that the description of the same configuration as in FIG. 6(A) will be omitted.

[0149] The display panel 100 has a display area 101 and an area 102 .

[0150] The region 102 has a region 110 that transmits visible light and a region 120 that blocks visible light. The light transmitting area 110 and the visible light blocking area 120 are adjacent to the display area 101, respectively. To contact.

[0151] FIG. 9B shows an example of an enlarged view of region P4 in FIG. 9A.

[0152] In FIG. 9B, the area of ​​the pixel 141 in the nth column is larger than the area of ​​the pixel 141 in the (n-1)th column. For example, the area of ​​pixel 141(m-1,n) is Similarly, the area of ​​the pixel 141 in the mth row is larger than the area of ​​the pixel 141 in the (m-1)th row. For example, the area of ​​pixel 141(m,n-1) is larger than the product of n-1). Furthermore, the area of ​​pixel 141(m,n) is larger than the area of ​​pixel 141(m -1,n-1) is larger than the area of

[0153] In one embodiment of the present invention, the area of ​​the display element of the pixel 141 in the n-th column is Similarly, the area of ​​the display element of the pixel 141 in the m-th row is set to be larger than the area of ​​the display element of the pixel 141 in the m-th row. The area of ​​the display element is made larger than the area of ​​the display element of the pixel 141 in the (m-1)th row. The area of ​​the display element of the pixel 141(m, n) is expressed as follows: The area of ​​the display element is set to be larger than the area of ​​the display element that is stacked in the row direction or the column direction. This allows for a wider tolerance for misalignment between the two display panels.

[0154] When the pixel has a light-emitting element as a display element, in FIG. 9B, the pixel 14 in the nth column The potential supplied to the gate of the driving transistor of the pixel 141 in the (n-1)th column is It is preferable that the potential be higher than the potential supplied to the gate of the driving transistor. The potential supplied to the gate of the driving transistor of the pixel 141 in the (m-1)th row is It is preferable that the potential be higher than the potential supplied to the gate of the driving transistor of the pixel 141. The potential supplied to the gate of the driving transistor of the pixel 141(m,n) is The potential supplied to the gate of the driving transistor of the pixel 141(m-1, n-1) is It is preferable that the value is higher than the above.

[0155] Alternatively, in FIG. 9B, the driving transistor of the pixel 141 in the n-th column is n-1 It is preferable that a larger current can flow through the driving transistor than that of the pixel 141 in the second column. Similarly, the driving transistor of the pixel 141 in the m-th row is preferably the same as that of the pixel 141 in the (m-1)-th row. It is preferable that a larger current can flow than the driving transistor of 41. The driving transistor of the pixel 141(m,n) is It is preferable that the driving transistor can pass a larger current than the driving transistor.

[0156] When four display panels are stacked, the other pixels 14 of the lowermost display panel 100a The pixel 141a, which has a larger area than the other pixel 141a, is divided into two parts by the same area as the other pixel 141a. It is preferable that the area 110b of the display panel 100b be overlapped with the area 110b that transmits visible light. Some of the pixels 141a in the panel 100a that are larger in area than the other pixels 141a are They overlap with the display areas 101b to 101d of the display panels 100b to 100d.

[0157] As shown in FIG. 9(C), the display panel 100a is displaced in a direction away from the other display panels. The more pixels 141a in the display panel 100a have a larger area than the other pixels 141a, the Area overlapping with the visible light transmitting regions 110b to 110d of the display panels 100b to 100d Even if the display panel 100a is shifted away from the other display panels, the display area Therefore, the display area 101a can be prevented from being separated from the display areas 101b to 101d. This prevents the image from appearing cut off due to misalignment of the panel.

[0158] <Configuration example F> FIG. 10(A) shows a modified example of FIG. 6(B). FIG. 10(B) shows a modified example of FIG. 7(B). vinegar.

[0159] In FIG. 10A, the area of ​​the pixels 149 arranged in the column direction is the area of ​​the pixel 141 in the nth column. For example, the area of ​​pixel 149(m,n+1) is larger than that of pixel 141(m,n). Similarly, the area of ​​the pixel 149 arranged in the row direction is larger than the area of ​​the pixel 149 in the m-th row. For example, the area of ​​pixel 149(m+1,n) is larger than the area of ​​pixel 141(m , n). Furthermore, the area of ​​pixel 149(m+1, n+1) is larger than the area of ​​pixel 149(m+1, n+1). The area is greater than 1(m,n).

[0160] In one embodiment of the present invention, the area of ​​the display element of the pixel 149 arranged in the column direction is The area of ​​the display element of each pixel 141 is set to be larger than the area of ​​the display element of each pixel 141. The area of ​​the display element of the pixel 149 in the mth row is set to be larger than the area of ​​the display element of the pixel 141 in the mth row. In addition, the area of ​​the display element of pixel 149(m+1, n+1) is increased. 1(m,n) has a larger area than the area of ​​the display element of the pixel 1(m,n). This allows for a wider tolerance for misalignment between two overlapping display panels.

[0161] When a pixel has a light-emitting element as a display element, the pixels are arranged in the column direction in FIG. The potential supplied to the gate of the driving transistor of the pixel 149 in the nth column is It is preferable that the potential is higher than the potential supplied to the gate of the driving transistor of 41. Similarly, the voltage supplied to the gate of the driving transistor of the pixel 149 arranged in the row direction is The potential is higher than the potential supplied to the gate of the driving transistor of the pixel 141 in the mth row. In addition, it is preferable that the gate of the driving transistor of the pixel 149(m+1, n+1) is The potential supplied to the gate is supplied to the gate of the driving transistor of the pixel 141(m,n). It is preferable that the potential is higher than the potential supplied.

[0162] Alternatively, in FIG. 10A, the driving transistors of the pixels 149 arranged in the column direction The driving transistor of the pixel 141 in the nth column can pass a larger current than the driving transistor of the pixel 141 in the nth column. Similarly, the driving transistors of the pixels 149 arranged in the row direction are A larger current can be passed through the driving transistor than that of the pixel 141 in the mth row. In addition, the driving transistor of the pixel 149(m+1, n+1) is preferably the same as that of the pixel 149(m+1, n+1). It is preferable that the driving transistor 1(m,n) can pass a larger current than the driving transistor 1(m,n). stomach.

[0163] As shown in FIG. 10(B), the display panel 100a is shifted in a direction away from the other display panels. The more pixels 149a of the display panel 100a are projected onto the visible light of the display panels 100b to 100d, the more the pixels 149a of the display panel 100a are projected onto the visible light of the display panels 100b to 100d. The area overlapping with the light transmitting regions 110b to 110d becomes larger. The image appears to be cut off between the two display areas due to the difference in the display area 109a. This can be suppressed by

[0164] <Circuit diagram for configuration example A> In the configuration example A, the gate signal and source signal supplied to the pixel 149 in the i-th row, An example of a method for equalizing the gate signal and source signal supplied to the pixels in the nth column will be explained. do.

[0165] FIG. 11 shows a display area 101, a display area 109, a scanning line driving circuit GD, and a signal line driving circuit GD. A circuit diagram explaining the SD connection relationship is shown below.

[0166] The display area 101 has a plurality of pixels 141. The display area 109 has a plurality of pixels 149. The pixel 141 and the pixel 149 each include a selection transistor 70a, a driving transistor The light-emitting element 40 includes a light-emitting element 70b.

[0167] Pixel 141(i,j) (i is an integer between 1 and m, and j is an integer between 1 and n) has one The signal lines 51(j) and one scanning line 52(i) are electrically connected. (j) is electrically connected to the signal line driving circuit SD. It is electrically connected to the drive circuit GD.

[0168] In the selection transistor 70a of the pixel 141(i,j), the gate is connected to the scanning line 52(i). and one of the source and drain is electrically connected to the signal line 51(j). The other of the source and drain is electrically connected to the gate of the driving transistor 70b. One of the source and drain of the driving transistor 70b is connected to the pixel electrode of the light emitting element 40. They are electrically connected, and a constant potential is applied to the other of the source and drain.

[0169] A pixel 149(i,q) (q is n+1, n+2, or n+3) is connected to one signal line 51(q ) and one scanning line 52(i) are electrically connected. The signal line 51(q) is a signal line It is electrically connected to the drive circuit SD.

[0170] In the select transistor 70a of the pixel 149(i,q), the gate is connected to the scan line 52(i). and one of the source and drain is electrically connected to the signal line 51(q). The other of the source and drain is electrically connected to the gate of the driving transistor 70b. One of the source and drain of the driving transistor 70b is connected to the pixel electrode of the light emitting element 40. They are electrically connected, and a constant potential is applied to the other of the source and drain.

[0171] The gates of the selection transistors 70a of the pixel 141 in the i-th row and the pixel 149 in the i-th row are , all of which are electrically connected to the scanning line 52(i). The gate signal supplied to the pixel 149 in the i-th row is equal to the gate signal supplied to the pixel 149 in the i-th row.

[0172] One of the source and drain of the selection transistor 70a of the pixel 141(i,n) is connected to the signal line The select transistor 70a of the pixel 149(i,q) is electrically connected to the Either the source or the drain is electrically connected to the signal line 51(q). D supplies the same source signal to the signal line 51(q) and the signal line 51(n), The source signal supplied to the pixel 49 and the source signal supplied to the pixel 141 in the nth column are made equal to each other. It is possible.

[0173] 12 and 13 show modifications of the circuit diagram of FIG. 11. FIG. 12 shows the signal line 51(n+1) 11 in that signal lines 51(n+2) and 51(n+3) are connected to the FIG. 13 shows a signal line 51(n) including a signal line 51(n+1), a signal line 51(n+2) and a 11 in that a signal line 51(n+3) is connected to the signal line 51(n+4).

[0174] In FIG. 11, the same source signal is supplied to all pixels 149 in the display area 109. Therefore, the signal lines connected to the display area 109 are individually connected to a signal line driving circuit. For example, as shown in FIG. Only one signal line connected to the pixel 149 is directly connected to the signal line driving circuit SD. You can also do this.

[0175] By reducing the number of signal lines connected to the signal line driver circuit SD, the configuration of FIG. 12 can achieve the same results as in FIG. Compared to the configuration of 1, the write time per signal line can be made longer.

[0176] In FIG. 11, the pixels in the display area 109 are the same as the pixels in the n-th column of the display area 101. Therefore, as shown in FIG. The signal lines connected to 149 do not have to be directly connected to the signal line driver circuit SD.

[0177] 13 and the configuration in which the display area 109 is not provided, the signal line driver circuit SD In other words, the number of signal lines connected to the display panel having the display area 109 is not changed. When applying this technology, it is not necessary to design a new driver circuit or to fabricate a new IC. Since there is no need to create new video data, manufacturing costs can be reduced.

[0178] FIG. 14 shows an example in which the display area 109 is provided adjacent to the pixels in the m-th row of the display area 101. Shows.

[0179] The configuration and connection relationship of the pixel 141(i,j) is the same as that in FIG.

[0180] A pixel 149(p,j) (p is m+1, m+2, or m+3) is connected to one signal line 51(j ) and one scan line 52(m) are electrically connected.

[0181] In the selection transistor 70a of the pixel 149(p,j), the gate is connected to the scanning line 52(m). and one of the source and drain is electrically connected to the signal line 51(j). The other of the source and drain is electrically connected to the gate of the driving transistor 70b. One of the source and drain of the driving transistor 70b is connected to the pixel electrode of the light emitting element 40. They are electrically connected, and a constant potential is applied to the other of the source and drain.

[0182] The gates of the selection transistors 70a of the pixel 141(m,j) and the pixel 149 are The j-th column pixel 141 and the j-th column pixel 14 are also electrically connected to the scanning line 52(m). One of the source and drain of the selection transistor 70a of the 9 is connected to the signal line 51(j). That is, the gate signal and the source signal supplied to the pixel 141 in the j-th column are electrically connected. The signal is equal to the gate signal and source signal supplied to the pixel 149 in the j-th column.

[0183] In one embodiment of the present invention, the pixel 149 included in the display region 109 includes the m The same gate signal as that of the pixel 141 in the second row is supplied to the pixel 141. The scanning lines connected to the pixels 149 of the region 109 are directly connected to the scanning line driving circuit GD. It's not necessary.

[0184] 14 and the configuration without the display area 109, the scanning line driving circuit GD is connected to the In other words, the number of scanning lines to be displayed does not change. When applying this technology, it is not necessary to design a new driver circuit or to fabricate a new IC. Since there is no need to create new video data, manufacturing costs can be reduced.

[0185] FIG. 15 shows a display area 101, a display area 109, a scanning line driving circuit GD, 10 shows a circuit diagram for explaining the connection relationship between the signal line driver circuit SD and the signal line driver circuit SD.

[0186] The configuration and connection relationship of the pixel 141(i,j) is the same as that in FIG.

[0187] A pixel 149(i,q) (q is n+1, n+2, or n+3) is connected to one signal line 51(n ) and one scan line 52(i) are electrically connected.

[0188] A pixel 149(p,j) (p is m+1, m+2, or m+3) is connected to one signal line 51(j ) and one scan line 52(m) are electrically connected.

[0189] Pixel 149(p,q) (p is m+1, m+2, or m+3, q is n+1, n+2, or n+3), one signal line 51(n) and one scanning line 52(m) are electrically connected. are.

[0190] In the selection transistor 70a of the pixel 149(p,q), the gate is connected to the scanning line 52(m). and one of the source and drain is electrically connected to the signal line 51(n). The other of the source and drain is electrically connected to the gate of the driving transistor 70b. One of the source and drain of the driving transistor 70b is connected to the pixel electrode of the light emitting element 40. They are electrically connected, and a constant potential is applied to the other of the source and drain.

[0191] The gates of the selection transistors 70a of the pixels 141(m,n) and 149(p,q) are electrically connected to the scanning line 52(m). The gate signal supplied to the pixel 149(p,q) is equal to the gate signal supplied to the pixel 149(p,q). stomach.

[0192] The source of the selection transistor 70a of the pixel 141(m, n) and the pixel 149(p, q) Either the drain or the drain is electrically connected to the signal line 51(n). The source signal supplied to the pixel 141(m,n) and the source signal supplied to the pixel 149(p,q) are The signal is equal to

[0193] 15 and the configuration in which the display area 109 is not provided, the signal line driver circuit SD is connected to the The number of signal lines connected to the scanning line driving circuit GD and the number of scanning lines connected to the scanning line driving circuit GD do not change. When applying a display panel having a display area 109 to a display device, a new driving circuit is designed. No need to create a new IC or new image data. Therefore, the manufacturing cost can be reduced.

[0194] 11 to 15 show examples in which the pixel 141 and the pixel 149 have the same internal configuration. However, one embodiment of the present invention is not limited to this.

[0195] In FIGS. 16A and 16B, the pixel 149 includes a driving transistor 70b and a light-emitting element 40. 10 shows an example in which the select transistor 70a is not provided.

[0196] In FIG. 16A, the pixel 149(m+2, n) and the pixel 149(m+1, n) The gate of the driving transistor 70b of the pixel 141(m,n) is connected to the gate of the driving transistor 70b of the pixel 141(m,n). It is electrically connected to the gate of the resistor 70b.

[0197] In FIG. 16B, the pixel 149(m,n+1) and the pixel 149(m,n+2) The gate of the driving transistor 70b of the pixel 141(m,n) is connected to the gate of the driving transistor 70b of the pixel 141(m,n). It is electrically connected to the gate of the resistor 70b.

[0198] In FIGS. 16C and 16D, a pixel 149 has a light emitting element 40 and a selection transistor 70. 10 shows an example in which the drive transistor 70a and the drive transistor 70b are not provided.

[0199] In FIG. 16(C), the pixel electrode of the light emitting element 40 of the pixel 149(m+1, n) is The pixel electrode 141(m, n) is electrically connected to the pixel electrode of the light emitting element 40.

[0200] In FIG. 16(D), the pixel electrode of the light-emitting element 40 of the pixel 149(m,n+1) is The pixel electrode 141(m, n) is electrically connected to the pixel electrode of the light emitting element 40.

[0201] 16(C) and 16(D), the driving transistor 7 electrically connected to the plurality of light emitting elements 40 0b has a larger current than the driving transistor electrically connected to one light emitting element 40. It is preferable to be able to pass the current.

[0202] In this way, the gate signal and signal supplied to the pixel 149 can be changed by changing the configuration within the pixel. The pixel 149 is connected to the pixel 141 in the nth column of the same row as the pixel 149 or the pixel 141 in the mth row of the same column. The gate signal and the source signal supplied to the display area 1 can be made equal. Even if the region 109 is provided, the number of signal lines connected to the signal line driving circuit SD and the number of scanning line driving circuits Another advantage is that the number of scanning lines connected to the GD does not increase.

[0203] <Circuit diagram for configuration example B> In the configuration example B, the pixel 141 in the nth column has a driving transistor, and the pixel 141 in the n-1th column has a driving transistor. An example of a method for passing a current larger than that of the driving transistor 141 will be described.

[0204] FIG. 17 illustrates the connection relationship between the pixel 141, the scanning line driving circuit GD, and the signal line driving circuit SD. The circuit diagram is shown below.

[0205] The pixels 141 arranged in the first to n-1th columns each include a selection transistor 70 a, a driving transistor 70b, and a light-emitting element 40. 1 respectively correspond to the selection transistor 70a, the driving transistor 70c, and the light-emitting element 40 It has.

[0206] Pixel 141(i,j) (i is an integer between 1 and m, and j is an integer between 1 and n) has one The signal lines 51(j) and one scanning line 52(i) are electrically connected. (j) is electrically connected to the signal line driving circuit SD. It is electrically connected to the drive circuit GD.

[0207] In the selection transistor 70a of the pixel 141(i,j), the gate is connected to the scanning line 52(i). and one of the source and drain is electrically connected to the signal line 51(j). The other of the source and drain is connected to the driving transistor 70b (when j=n, the driving transistor The gate of the driving transistor 70b (j=n) is electrically connected to the gate of the driving transistor 70c. In this case, one of the source and drain of the driving transistor 70c is electrically connected to the light emitting element 40. and a constant potential is applied to the other of the source and drain.

[0208] The driving transistor 70c has a back gate. The back gate is electrically connected to the gate. Compared to single-gate transistors, dual-gate transistors Therefore, the pixel 141 in the nth column is provided with a dual resistor. A single-gate driving transistor 70c is used for the pixel 141 in the (n-1)th column. By using the drive transistor 70b of the n-th column, the drive transistor of the pixel 141 A larger current flows through the driving transistor of the pixel 141 in the n-1th column than through the driving transistor of the pixel 141 in the n-1th column. It is possible.

[0209] In the configuration example C, the driving transistor of the pixel 149 is connected to the driving transistor of the pixel 141 in the n-th column. A similar method can be applied to pass a larger current than the drive transistor.

[0210] In FIG. 18, a dual-gate type driving transistor 70c is used in the pixel 149, and 1 shows an example in which a single-gate type driving transistor 70b is used.

[0211] In FIG. 18, the signal line connected to the pixel 141 in the n-1th column and the pixel 141 in the nth column are Therefore, the potential supplied to the pixel 141 in the nth column is different from the signal line connected to the nth column. The potential supplied to the pixel 141 in the -1st column can be made higher than that supplied to the pixel 141 in the nth column. The potential supplied to the gate of the driving transistor of the pixel 141 in the n-1th column is The potential can be made higher than the potential supplied to the gate of the driving transistor of the element 141. In this case, the pixels 141 in the (n-1)th column and the pixels 141 in the nth column can have the same configuration. For example, both the pixel 141 in the (n-1)th column and the pixel 141 in the nth column can be selected by the selection transistor. The light emitting element 40 may have a configuration including a driving transistor 70a, a driving transistor 70b, and a light emitting element 40. Alternatively, for example, both the pixel 141 in the n-1th column and the pixel 141 in the nth column may be selected as the selected transistor. The light emitting element 40 may have a configuration including a driving transistor 70a, a driving transistor 70c, and a light emitting element 40. Cut.

[0212] <Pixel layout diagram for configuration example C> In the configuration example C, the driving transistor of the pixel 149 is connected to the driving transistor of the pixel 141 in the n-th column. This section explains another method for passing a larger current than that of the drive transistor. , F can be applied in a similar way.

[0213] 19(A) to (D) show examples of pixel circuit diagrams. A) and (B) show examples of pixel layouts. In the layout diagrams, some of the layers, such as the insulating layer, are The configuration is omitted. Figures 20(B) and 21(B) are the same as Figures 20(A) and 21(A). 10 is a diagram in which a pixel electrode 36 is added to the above.

[0214] The pixel circuit 80 shown in FIG. 19A includes a selection transistor 70a, a drive transistor 70b, and a , and a capacitor element 85. The pixel circuit 80 includes a signal line 51, a scanning line 52, and a power supply line The light emitting element 40 has a pixel electrode 36 and a common electrode 38. The line 55 is connected to the capacitor element 85 and to one of the source and drain of the driving transistor 70b. The potential or signal is supplied.

[0215] The pixel circuit 80 shown in FIG. 19(B) has a different connection relationship of the capacitance element 85 from that shown in FIG. 19(A). The pixel circuit 80 shown in FIGS. 19(C) and 19(D) includes a single-gate driving transistor 7 19A in that it does not have a driving transistor 70b but has a dual-gate driving transistor 70c. , which is different from (B).

[0216] The pixel layouts shown in FIGS. 20(A), (B) and 21(A), (B) are, for example, 5(A) or 10(A). 9A or 9B, the display panel in which the area of ​​the display region of the display element varies depending on the pixel. It can also be applied to

[0217] The pixel 141 shown in FIGS. 20(A), (B), 21(A), and (B) has the same structure as that shown in FIG. 19(A). The pixel circuit 80 shown in FIG. 19 is also applied to the pixel 149 shown in FIGS. The pixel circuit 80 shown in FIG. 21(A) is applied to the pixel 149 shown in FIG. 21(A) and (B). 19(C) is applied to the pixel circuit 80 shown in FIG.

[0218] The connection relationship in each pixel will be explained. A part of the scanning line 52 is connected to the selection transistor 70a. A part of the signal line 51 functions as the source or drain of the selection transistor 70a. The semiconductor layer 72a is disposed so as to overlap a part of the scanning line 52, and the semiconductor layer 7 The signal line 51 is disposed so as to overlap a part of the semiconductor layer 72a. On the side of the gate electrode 70a, a conductive layer 74 is formed, which functions as the other of the source and drain of the select transistor 70a. The conductive layer 74b is electrically connected to the conductive layer 76. A part of the gate electrode of the driving transistor 70b, 70b1, 70b2, or 70c is used. Another part of the conductive layer 76 functions as one electrode of the capacitor element 85. A part of the capacitor 55 functions as the other electrode of the capacitor element 85, and another part of the capacitor 55 functions as the other electrode of the driving transistor 7. It functions as either the source or drain of 70b, 70b1, 70b2, or 70c. The other of the source or drain of the driving transistor 70b, 70b1, 70b2, or 70c is , and are electrically connected to the pixel electrodes 36, 36a, or 36b.

[0219] In FIG. 20(B) and FIG. 21(B), the light emitting region 83b is larger than the light emitting region 83a.

[0220] In FIGS. 20A and 20B, the W / L of the driving transistor 70b2 of the pixel 149 is set to The W / L of the driving transistor 70b1 is set to be larger than that of the driving transistor 70b2. The larger the value of / L, the larger the current that can be passed through the light emitting region 83b. Even if the light emitting area 83b is wider than the light emitting area 83a, the brightness of the light emitting area 83b is lower than that of the light emitting area 83a. This can be suppressed.

[0221] In FIGS. 20A and 20B, the semiconductor layer 72b2 has a channel width larger than that of the semiconductor layer 72b1. In the example shown, the driving transistor 70b1 is long in the direction of the arrow B, but the present invention is not limited to this. The capacitor 70b2 may have at least one of a channel length L and a channel width W different from each other. can.

[0222] In FIGS. 21A and 21B, the driving transistor 70b of the pixel 149 is a dual-gate type The driving transistor 70c of the pixel 141 is a single-gate transistor. As mentioned above, compared to single-gate transistors, dual-gate The light-emitting region 83b emits light. Even if the light emitting area 83b is wider than the light emitting area 83a, the brightness of the light emitting area 83b is lower than that of the light emitting area 83a. This can be suppressed.

[0223] The driving transistor 70c has a configuration in which a gate 77 is added to the driving transistor 70b. In FIGS. 21A and 21B, the two gates of the driving transistor 70c are connected to each other. The example shown is a circuit in which two gates of the driving transistor 70c are connected to each other, but the present invention is not limited to this. The gates may not be connected to each other. In this case, different potentials are applied to the two gates. For example, an n-channel transistor can be used as the driving transistor 70c. When using a gate electrode, a potential that shifts the threshold voltage in the negative direction can be applied to one of the gate electrodes. This allows the current that flows when a predetermined potential is applied to the other gate to be increased. do.

[0224] In addition, when the area of ​​the display region of the display element is equal in all pixels, such as in FIG. 1(A), Therefore, the drive transistors of all pixels and the layout of the pixels can be made to have the same configuration. For example, the pixels 141 and 142 shown in FIGS. 20(A), 20(B) and 21(A), 21(B) can be Any one of the layouts of the pixel 149 can be applied.

[0225] <Display area of ​​the display element> The layout of the display area of ​​the display element will be described below.

[0226] FIG. 22A shows an example of an arrangement of pixels in four rows and four columns on a display panel. An example of the layout of the display area of ​​the display element of each pixel is shown in FIGS. 22(B) to 22(E). 22(B) to (E), the display area 41 of the display element of the pixel 141 and the pixel 14 9 is a display area 49 of the display element. The colors are indicated by the symbols R for red, G for green, B for blue, and W for white.

[0227] The order of the colors is not particularly limited. The types and number of colors are also not particularly limited. The area of ​​the region can be made different depending on the color. can be made equal for all colors.

[0228] FIG. 22(B) shows an example of the layout of the display area of ​​the display element having three color pixels of RGB. The display area 41 in the (n-2)th column corresponds to the red (R) pixels 141. The area 41 corresponds to the green (G) pixel 141. The display area 41 in the nth column corresponds to the blue (B) pixel 141. The display area 49 in the n+1th column corresponds to the blue (B) pixel 149. The display area 49 in the (m+1)th row and the jth column and the display area 41 in the mth row and the jth column are the same color. The area of ​​the display area 41 is the same for all the display elements. The areas of display area 41 and display area 49 are also equal.

[0229] FIG. 22(C) shows an example of the layout of the display area of ​​a display element having four color pixels of RGBW. The red (R) pixel and the blue (B) pixel are located in the same row. The green (G) pixel and the white ( The red (R) and green (G) pixels are located in the same row. The blue (B) pixel and the white (W) pixel are located in the same column. The pixel 149 has the same color as the pixel 141 in the mth row and jth column. The pixel 149 in the ith row and n+1th column has the following color: The pixel 141(m,n) has the same color as the pixel 141 in the ith row and nth column. n+1) are both blue.

[0230] FIG. 22(D) shows an example of the layout of the display area of ​​the display element having three color pixels of RGB. The red (R) pixel and the blue (B) pixel are located in the same row. The green (G) pixel and the blue (B) pixel are located in the same row. The red (R) and green (G) pixels are located in the same row. Red (R) and green (G) pixels are located in the same column. Blue (B) pixels In the column where the pixel is located, there are no other pixels of other colors. The display areas 41 and 49 of the display elements are different from the display areas 41 and 49 of the display elements of the pixels of other colors. Narrower than.

[0231] FIG. 22(E) shows an example of the layout of the display area of ​​a display element having three color pixels of RGB. Even if multiple pixels are located on the same row, the display area of ​​the display element is also located on the same row. FIG. 22(E) shows the display areas 41 and 49 of the display elements of the pixels in each row. This is an example of arranging pixels in rows. The blue pixels are arranged below the pixels of other colors, The layout has areas 41 and 49. For example, the layout can be realized by using a color-coded method. This is suitable for fabricating elements.

[0232] The pixels are not limited to being arranged in m rows and n columns. For example, as shown in FIGS. In this way, the display panel 100 may be configured so that it does not have pixels at some coordinates of m rows and n columns. can.

[0233] An example of the layout of the display area of ​​the display element of each pixel in FIG. 23(A) is shown in FIG. 23(B). An example of the layout of the display area of ​​the display element of each pixel in FIG. 23(C) is shown in FIG. In Figures 23(A) and 23(C), there are columns with m pixels and columns with m / 2 pixels. In Figures 23(A) to 23(D), m is an even number. FIG. 23A shows an example in which the nth column located at the edge of the display area 101 has m pixels. FIG. 23C shows a case where the n-th column located at the edge of the display area 101 has m / 2 pixels. This is an example.

[0234] In FIG. 23B, the display areas 41 and 49 of the display elements of the blue pixels are The display area of ​​the blue pixel is larger than the display area 41, 49 of the display element of the blue pixel. The display areas 41 and 49 extend into areas where no pixels of any color are provided. 3(D), the display area 41 of the display element of the blue pixel and the area of ​​the display element of the other color pixel are The same applies to the display area 41 of the display element. The display area 49 of the display element having the pixel of the other color is the same as the display area 49 of the display element having the pixel of the other color. It can be an area.

[0235] As described above, in one embodiment of the present invention, the arrangement of pixels (pixel circuits) and the display area of ​​the display element The layout of the area does not necessarily match the layout of the area, and various layouts can be applied. do.

[0236] <Other configuration examples of display devices> FIG. 24(A) shows a perspective view of the display surface side of the display device 12. FIG. 24(B) shows the display device 1 24(A) and 24(B) show a perspective view of the display device 12 on the side opposite to the display surface side of the display device 12. The display panels 100 are arranged in a 2x2 matrix (two in the vertical and horizontal directions). In Figures 24(A) and 24(B), each display panel is electrically connected to an FPC. Here is an example:

[0237] The display device 12 can be any of the various display panels described in this embodiment. 24(A) and (B) are display panels that do not have a display area 109 (corresponding to FIG. 9(A) and the like). However, a display panel having a display area 109 (corresponding to FIG. 6(A) and the like) is used. It is also possible to do so.

[0238] At least a portion of the display device 12 is flexible. The display panel 100 has flexibility. The display element of the flexible display panel 100 is an organic EL element. It can be suitably used.

[0239] By using the flexible display panel 100, as shown in FIGS. 24(A) and 24(B), The vicinity of the FPC 112a of the display panel 100a is curved, and the display A part of the display panel 100a and the FPC 1 are disposed below the display area 101b of the panel 100b. As a result, the FPC 112a can be positioned on the display panel 100b. In addition, the display panel 100a and the rear surface of the display panel 100b can be arranged without physically interfering with each other. When the display panel 100b is stacked and fixed, the thickness of the FPC 112a must be taken into consideration. Therefore, the height between the top surface of the visible light transmitting region 110b and the top surface of the display panel 100a is As a result, the difference between the edge of the display panel 100b located on the display area 101a can be reduced. can be made less noticeable.

[0240] Furthermore, by making each display panel 100 flexible, the display area of ​​the display panel 100b The height of the upper surface of the display area 101b of the display panel 100a is The display panel 100b can be gently curved to match the height. Therefore, the display area of ​​each display panel is approximately 100% of the area except for the area where the display panel 100a and the display panel 100b overlap. The height can be made uniform, and the display quality of the image displayed in the display area 13 of the display device 12 can be improved. It can be done.

[0241] Although the above description has been given taking the relationship between the display panel 100a and the display panel 100b as an example, other adjacent display panels may be used. The same applies to the two display panels.

[0242] In order to reduce the step between two adjacent display panels 100, the thickness of the display panels 100 is thin. For example, the thickness of the display panel 100 is set to 1 mm or less, preferably 300 μm or less. It is preferable that the thickness is 100 μm or less, and more preferably 100 μm or less. This is preferable because it also leads to a reduction in the thickness or weight of the entire display device.

[0243] FIG. 25(A) is a top view of the display device 12 shown in FIGS. 24(A) and 24(B) as viewed from the display surface side. be.

[0244] Here, the region 110 of the display panel 100 that transmits visible light transmits at least a portion of the visible light. Therefore, the display on the display panel 100 disposed below reflects or absorbs visible light. The portion visible through the region 110 that transmits light and the portion visible without passing through the region 110 are In addition, the display panel overlapping the display area 101 may have a difference in luminance (brightness). The luminance (brightness) of the displayed image decreases according to the number of panels 100.

[0245] For example, in the area A in FIG. 25(A), a 1 In the area B, the display panel 100b is overlapped with the display panel 100c. Two display panels 100, 100c and 100d, are overlapped on the area 101b. In the region C, the display panel 100a has a display region 101a on it. A total of three display panels 100, 100b, 100c, and 100d, are stacked one on top of the other.

[0246] In such a case, the number of pixels is increased depending on the number of display panels 100 that overlap the display area 101. It is preferable to apply a correction to the image data to be displayed so as to locally increase the gradation. This prevents a decrease in the display quality of the image displayed in the display area 13 of the display device 12. Alternatively, by adjusting the data voltage supplied from the drive circuit, The brightness of the pixels can be adjusted.

[0247] In addition, the position of the edge of the display panel 100 arranged at the top is shifted from the edge of the other display panels 100. By doing so, the display area 101 of the display panel 100 overlapping the display area 101 of the lower display panel 100 can be The number can be reduced.

[0248] In FIG. 25(B), display panels 100c and 100b are arranged on the display panels 100a and 100b. 100d are arranged with the display panels 100a and 100b shifted in one direction. 0b, the display panels 100c and 100d are arranged in the region 100c that transmits visible light in the positive direction of the X direction. 10. In this case, the display area 101 is relatively shifted by a distance of width W1. The area D has one display panel 100 superimposed thereon, and the area B has two display panels superimposed thereon. There is an area E where the rule 100 is superimposed.

[0249] Furthermore, the display panels may be arranged so as to be shifted in a direction (Y direction) perpendicular to the X direction. In FIG. 25C, the display panels 100b and 100c are different from the display panels 100a and 100c. 0d is shifted in the positive Y direction by a distance W1, which is the width of the region 110 that transmits visible light. This shows the case where

[0250] The display panel 100 positioned at the top is shifted relative to the display panel 100 positioned at the bottom. When the display areas 101 of the display panels 100 are arranged in a combined manner, the outline of the combined area is Therefore, as shown in Figures 25(B) and (C), the display device When the display area 13 of the display device 12 is rectangular, the display panel 10 positioned outside the rectangular area It is preferable to drive the display panel 10 so that no image is displayed in the display area 101 of the display panel 10. The display area 101 of 0 is determined by taking into consideration the number of pixels in the area where no image is displayed. It is preferable to provide more pixels than the total number of pixels in the display panel 100 divided by the number of display panels 100. It's nice.

[0251] In the above description, the distance by which the display panels 100 are shifted relative to each other is determined based on the distance that transmits visible light. However, the present invention is not limited to this and may be modified depending on the shape of the display panel 100 or the width W1 of the display area 110. The size of the display area 13 of the display device 12 to which the display device 12 is combined can be appropriately set in consideration of the size of the display area 13. This can be done.

[0252] 26 and 27 are examples of cross-sectional views of two display panels bonded together. In the following, an example will be described in which the display panel shown in FIG.

[0253] In each of FIGS. 26(A) to 26(E), the lower display panel has a display area 101a, a visible light The lower display panel has a region 110a that transmits visible light and a region 120a that blocks visible light. The FPC 112a is electrically connected to the upper display panel (display surface side). The optical element has a region 101b, a region 110b that transmits visible light, and a region 120b that blocks visible light. The upper display panel is electrically connected to an FPC 112b. When the display panel shown in FIG. 1 is used, the display area 101a and the visible light blocking area 120a are There is a display area 109a between them.

[0254] In FIG. 26(A), the FPC 112a is connected to the display surface (front surface) of the lower display panel. 10 shows an example in which the FPC 112b is connected to the display surface side of the upper display panel.

[0255] Here, the visible light transmitting area of ​​the upper display panel and the visible light transmitting area of ​​the lower display panel are If there is air between the display area of ​​the filter and the display, some of the light extracted from the display area will The interface between the visible light and the atmosphere, and the interface between the atmosphere and the visible light transmitting area, respectively, reflects and displays This may cause a decrease in brightness in areas where multiple display panels overlap. In addition, the light extraction efficiency of the upper display panel is reduced. The area of ​​the display panel located below the display area is divided into two parts: the area that overlaps with the area of ​​the display panel located below the display area and the area that does not overlap with the area of ​​the display panel located below the display area. This can cause differences in brightness, making the seams of the display panel more noticeable to users. .

[0256] Therefore, as shown in FIG. 26(B), the display device has a transparent region between the display region and the region that transmits visible light. In addition, it is preferable to have a light-transmitting layer 103 that has a refractive index higher than that of air and transmits visible light. This prevents air from getting between the display area and the area that transmits visible light, and reduces the refractive index This can reduce reflection at the interface due to the difference in the thickness of the display device. This makes it possible to suppress uneven brightness.

[0257] In addition, the higher the visible light transmittance of the transparent layer, the higher the light extraction efficiency of the display device. In the light-transmitting layer, the transmittance of light in the wavelength range of 450 nm or more and 700 nm or less is preferably The average value is preferably 80% or more, and more preferably 90% or more.

[0258] Furthermore, 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. For example, the refractive index of the light-transmitting layer only needs to be higher than that of air, and is preferably 1. The ratio is preferably 3 or more and 1.8 or less. The difference in refractive index between the substrates constituting the substrate is preferably 0.30 or less, more preferably 0.20 or less. It is more preferable that the ratio is 0.15 or less, and even more preferable that the ratio is 0.15 or less.

[0259] The light-transmitting layer is detachably attached to at least one of the lower display panel and the upper display panel. It is preferable that the display panels constituting the display device are individually detachable. For example, if a problem occurs with the display of one display panel, Only the panel can be replaced with a new display panel. The other display panels can continue to be used. By using this, the display device can be used for a longer period of time at a lower cost.

[0260] If the display panel does not need to be detachable, the transparent layer may be made of an adhesive material (adhesive The display panels can be fixed together using adhesives or the like.

[0261] The light-transmitting layer can be made of either an inorganic material or an organic material. A soft, gel-like, or solid material can be used.

[0262] The light-transmitting layer may contain, for example, water, an aqueous solution, a fluorine-based inert liquid, a refractive liquid, a silicone oil, etc. A liquid substance can be used.

[0263] When the display device is placed tilted to the horizontal plane (a plane perpendicular to the direction of gravity), or when the display device is placed in a position that is inclined to the horizontal plane (a plane perpendicular to the direction of gravity), When arranging the liquid material vertically, the viscosity of the liquid material should be 1 mPa·s or more. Preferably, 1 Pa·s or more is more preferable, 10 Pa·s or more is even more preferable, and 100 Pa·s or more is even more preferable. s or more is particularly preferable. However, this is not limited to this.

[0264] If the light-transmitting layer is inactive, it is possible to prevent damage to other layers constituting the display device. Yes, it is preferable.

[0265] It is preferable that the material contained in the light-transmitting layer is nonvolatile. This can prevent air from entering the interface due to the evaporation of the material.

[0266] The light-transmitting layer may be made of a polymer material, such as epoxy resin or acrylic. Resin, silicone resin, phenolic resin, polyimide resin, imide resin, PVC (polyvinyl chloride) nitril chloride) resin, PVB (polyvinyl butyral) resin, EVA (ethylene vinyl acetate) Acetate resin, etc. Also, a two-component mixed resin can be used. Photo-curable adhesives such as ultraviolet curable adhesives, and reaction-curable adhesives containing one or more of these resins Various hardening adhesives such as adhesives, thermosetting adhesives, anaerobic adhesives, or adhesive sheets can be used. If you do not want to fix the display panels together, the adhesive does not need to be hardened. .

[0267] The light-transmitting layer is preferably a layer that has high self-adsorption to the adherend. It is preferable that the transparent layer has high peelability against the body. It is preferable that the film can then be reattached to the display panel.

[0268] In addition, it is preferable that the light-transmitting layer has no or low adhesiveness. The light-transmitting layer adheres to the substrate and transmits light from the substrate without damaging or soiling the surface. The peeling of the optical layer can be repeated.

[0269] The light-transmitting layer may be, for example, an adhesive film or a sticky film. The surface of the film that has adhesiveness or stickiness can be one or both sides. The adsorption film having a laminated structure of an adsorption layer or adhesive layer and a substrate can be When used, the adhesive layer or the pressure-sensitive adhesive layer functions as a light-transmitting layer in the display device, and the substrate is It can function as a substrate that constitutes a display panel. The adsorption film may have a substrate separate from the substrate of the film. The anchor layer may be provided between the adhesive layer and the substrate. The anchor layer has the function of improving the adhesive strength of the adhesive layer or the coating of the adhesive layer of the substrate. This makes the surface smooth, reducing the risk of air bubbles forming between the adherend and the light-transmitting layer. It is possible.

[0270] For example, a display device may include a film in which a silicone resin layer and a polyester film are laminated. In this case, the silicone resin layer has an adsorption property, and the light-transmitting layer and the silicone resin layer can be suitably used. The polyester film also functions as a light-transmitting layer or as a display layer. It functions as the substrate that makes up the panel. The silicone resin is applied to one side of the polyester film. Or it may be provided on both sides.

[0271] There is no particular limitation on the thickness of the light-transmitting layer, and it can be, for example, 1 μm or more and 50 μm or less. The thickness of the light-transmitting layer may be thicker than 50 μm, but when manufacturing a flexible display device, It is preferable that the thickness of the transparent layer is set to a level that does not impair the flexibility of the display device. The thickness is preferably 10 μm or more and 30 μm or less. The thickness of the light-transmitting layer is preferably less than 1 μm. It is also possible.

[0272] The display region 101a overlaps with the region 110b that transmits visible light via the light-transmitting layer 103. Therefore, it is possible to prevent air from entering between the display area 101a and the area 110b that transmits visible light. This can reduce reflection at the interface due to the difference in refractive index.

[0273] As a result, the display area is divided into areas that overlap with the area 110b that transmits visible light and areas that do not overlap with the area 110b. The difference in brightness between the areas 101a and 101b is suppressed, and the user of the display device does not notice the seam of the display panel. Furthermore, unevenness in display or brightness on a display device can be suppressed. This becomes possible.

[0274] The visible light blocking area 120a and the FPC 112a overlap with the display area 101b. Therefore, it is possible to secure a sufficient area for the non-display area and enlarge the seamless display area. This makes it possible to realize a highly reliable large-sized display device.

[0275] In FIG. 26(C), the FPC 112a is on the surface (back surface) opposite to the display surface of the lower display panel. FPC 112b is connected to the side opposite the display surface of the upper display panel (back side). An example of a connection is shown below.

[0276] In FIG. 26(C), the light-transmitting layer 103 is disposed between the area 120a of the lower display panel that blocks visible light and the upper The display area 101b of the display panel on the other side is also provided.

[0277] By configuring the FPC to be connected to the back side of the display panel, the edge of the lower display panel It can be attached to the back of the upper display panel, so the adhesive surface area can be increased. This can increase the mechanical strength of the bonded portion.

[0278] In FIG. 26(D), the area of ​​the display area 101a that does not overlap with the upper display panel and the transparent layer Furthermore, the region 110a that transmits visible light and the transparent layer 103 overlap. It has become.

[0279] Depending on the material of the light-transmitting layer, fine particles such as dust in the air may be adsorbed. In such a case, the area of ​​the display area 101a that does not overlap with the upper display panel and the transparent layer It is preferable that the transparent layer 103 does not overlap with the transparent layer 103. This can prevent the display on the display device from becoming unclear.

[0280] In FIG. 26(E), the upper display panel has an area that does not overlap with the display area 101a and a transparent layer It overlaps with 103.

[0281] In the configuration of FIG. 26(E), 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 The display device can be attached to a desired position in a detachable manner using the above method.

[0282] In FIG. 27A, the resin layer 131 is the main body of the display panel 100a and the display panel 100b. The display area of ​​each of the display panels 100a and 100b and the display area of ​​the display panel 100a are covered with a A resin layer 131 is provided to cover the area where the display panel 100a and the display panel 100b overlap each other. It is preferable to do so.

[0283] By providing the resin layer 131 across the plurality of display panels 100, the mechanical Furthermore, if the surface of the resin layer 131 is formed to be flat, This can improve the display quality of the image displayed in the display area 13. For example, Coating machines such as curtain coaters, gravure coaters, roll coaters, and spin coaters By using this apparatus, a resin layer 131 with high flatness can be formed.

[0284] The refractive index of the resin layer 131 is 0.05 times that of the substrate used on the display surface side of the display panel 100. It is preferable that the ratio is 0.8 to 1.2 times, and more preferably 0.9 to 1.1 times. The thickness of the display panel 100 and the resin is preferably 0.95 times or more and 1.15 times or less. The smaller the difference in refractive index of the layer 131, the more efficiently light can be extracted to the outside. The resin layer 131 having such a refractive index is placed between the display panel 100a and the display panel 100b. By providing the step portion so as to cover it, the step portion becomes difficult to be seen, and therefore, the step portion is not visible in the display area 13. This can improve the display quality of the displayed image.

[0285] The resin layer 131 is a layer that transmits visible light. The resin layer 131 is made of, for example, epoxy resin. , aramid resin, acrylic resin, polyimide resin, polyamide resin, polyamideimide resin Organic resins such as fats can be used.

[0286] 27(B), a protective substrate 13 is provided on the display device 12 via a resin layer 131. In this case, the resin layer 131 is preferably provided between the display device 12 and the protective substrate 132. The protective substrate 132 may function as an adhesive layer for adhering the display device 1. 2, and also enhances the mechanical strength of the display device 12. The substrate 132 is made of a material having light-transmitting properties at least in the area overlapping the display area 13. In addition, the protection substrate 132 is formed so that areas other than the area overlapping the display area 13 are not visible. , and may have light-blocking properties.

[0287] The protective substrate 132 may also function as a touch panel. If the protective substrate 132 is flexible and bendable, the protective substrate 132 is also flexible. It is preferable.

[0288] The protective substrate 132 is a substrate used on the display surface side of the display panel 100, or a resin layer 131. The difference in refractive index between the It is more preferable that the ratio is less than or equal to:

[0289] The protective substrate 132 may be a film-like plastic substrate. Polyethylene terephthalate (PET), polyethylene naphthalate (PEN), etc. polyester resin, polyacrylonitrile resin, polyimide resin, polymethyl methacrylate resin, polycarbonate (PC) resin, polyethersulfone (PES) resin, polya Mido resin (nylon, aramid, etc.), polycycloolefin resin, polystyrene resin, Polyamide-imide resin, polyvinyl chloride resin, polyether ether ketone (PEEK) resin Fat, polysulfone (PSF) resin, polyetherimide (PEI) resin, polyarylate (PAR) resin, polybutylene terephthalate (PBT) resin, polytetrafluoroethylene Polytetrafluoroethylene (PTFE) resin, silicone resin, etc. are also available. Substrate (also called prepreg), or inorganic filler mixed with organic resin to lower the coefficient of linear expansion The protective substrate 132 is not limited to a resin film, but may be a printed circuit board. A transparent nonwoven fabric made by processing a continuous sheet of fibroin into a human body. Sheets containing spider silk fibers, composites made by mixing these with resin, and fibers with a fiber width of 4 nm or more A laminate of a nonwoven fabric made of cellulose fibers of 000 nm or less and a resin film, or artificial spider silk fibers A laminate of a sheet containing the resin film and the resin film may be used. The panel may be attached to an acrylic plate, glass plate, wood plate, metal plate, etc. The display panel may be attached to these plates with the display surface side (in this case, the visible light is transmitted The surface opposite to the display surface may be attached. The display panels are preferably removably attached to these plates.

[0290] The protective substrate 132 may be a small material such as a polarizing plate, a circular polarizing plate, a retardation plate, or an optical film. At least one may be used.

[0291] As shown in FIG. 27(C), the display surfaces of the display panels 100a and 100b A resin layer 133 and a protective substrate 134 can be provided on the surface opposite to the display panel. By placing a substrate that supports the display panel on the back of the The image displayed in the display area 13 is displayed smoothly by suppressing bending and keeping the display surface smooth. This can improve the display quality of the image.

[0292] The resin layer 133 and the protective substrate 134 provided on the opposite side to the display surface are not necessarily light-transmitting. The material does not necessarily have to have a specific property, and a material that absorbs or reflects visible light may be used.

[0293] As shown in FIG. 27(D), a resin layer 131 and a protective substrate are provided on the front surface of the display panel. 132, a resin layer 133 and a protective substrate 134 can be provided on the rear surface. The display panel 100a and the display panel 100b are sandwiched between two protective substrates. This can further increase the mechanical strength of the display device 12.

[0294] The total thickness of the resin layer 131 and the protective substrate 132 and the total thickness of the resin layer 133 and the protective substrate 13 For example, the total thickness of the resin layer 131 and the resin layer 14 is preferably approximately the same. 33 are made to have the same thickness, and the protection substrate 132 and the protection substrate 134 are made of materials of the same thickness. This allows the plurality of display panels 100 to be stacked in the thickness direction of the stack. For example, the laminated body including the display panel 100 can be curved. In this case, since the display panel 100 is positioned at the center in the thickness direction, the display changes with the curvature. This reduces the lateral stress applied to the display panel 100, thereby preventing damage to the display panel 100. This can be done.

[0295] In addition, when the thickness of the resin layer and the protective substrate differs between the edge and the center of the display device, The average thickness, maximum thickness, minimum thickness, etc. are appropriately selected, and the resin layer 131 and the protective layer are formed under the same conditions. By comparing the total thickness of the substrate 132 with the total thickness of the resin layer 133 and the protective substrate 134, It is preferable that:

[0296] In FIG. 27(D), if the same material is used for the resin layer 131 and the resin layer 133, the manufacturing cost is Similarly, if the protection substrate 132 and the protection substrate 134 are made of the same material, This is preferable because it reduces the manufacturing cost.

[0297] As shown in FIGS. 27(C) and 27(D), the display panel 100a and the display panel 100b The resin layer 133 and the protection substrate 134 arranged on the rear side of the FPC 112a are In particular, as shown in FIG. 27(D), it is preferable to provide an opening for the FPC 112. When a resin layer 133 is provided so as to cover a part of the display panel 100a and the FPC 112a, This increases the mechanical strength of the connection, preventing the FPC112a from peeling off. Similarly, a resin layer 133 is provided to cover a part of the FPC 112b. It is preferable that

[0298] The display device of one embodiment of the present invention can display FHD (1920×1080), 4K2K (3840×2 048 or 4096 x 2180, etc.), or 8K4K (7680 x 4320 or 8 High resolution, such as 192 x 4320, is preferred.

[0299] <Example of display panel configuration> As described above, in the display panel 100, the region 110 that transmits visible light and the display region 101 are adjacent to each other. In addition, the display area 109 is between the display area 101 and the area 120 that blocks visible light. The following describes the configuration near these boundaries.

[0300] FIG. 28(A) shows a top view of the display panel 100. The display panel 10 shown in FIG. 0 has a display area 101, a display area 109, and an area 102. The area 102 is a visible It has a light transmitting region 110 and a visible light blocking region 120. The display area 10 is adjacent to the display area 101. The display area 109 blocks visible light from the display area 101. It is located between and adjacent to region 120.

[0301] In the display panel 100 shown in FIG. 28(A), the region 110 that transmits visible light is a display region 1 The display area 109 is arranged along the other two sides of the display area 101. Along one of the two opposing sides of the display area 101, A region 110 that transmits visible light is disposed, and a display region 109 is disposed along the other side. In addition, a region 120 that blocks visible light is arranged along the display region 109.

[0302] FIG. 28(B) shows an enlarged view of the region Z1 shown in FIG. 28(A). The region Z1 blocks visible light. This is the area near the boundary between the area 120 and the display area 109 .

[0303] FIG. 28(C) shows an enlarged view of the region Z2 shown in FIG. 28(A). The region Z2 transmits visible light. This is the area near the boundary between the passing area 110 and the display area 101.

[0304] A wiring 142a and a wiring 142b are electrically connected to one pixel 141. The pixel 149 is electrically connected to a wiring 142a and a wiring 142b. Each of the wirings 142a intersects with the wiring 142b and is electrically connected to the circuit 143a. The wirings 142b are electrically connected to the circuit 143b. One of the circuits 143b is a scanning line driving circuit, and the other is a signal line driving circuit. The circuit 143a, the circuit 143b, or both may be omitted.

[0305] In FIG. 28B, a plurality of wirings 145 electrically connected to the circuit 143a or the circuit 143b are The wiring 145 is electrically connected to the FPC in a region not shown, and is connected to the outside. These signals are supplied to the circuit 143a and the circuit 143b.

[0306] In FIG. 28B, a region including the circuit 143a, the circuit 143b, the plurality of wirings 145, etc. , corresponds to the area 120 that blocks visible light.

[0307] In FIG. 28A, the area outside the pixel 141 provided at the edge transmits visible light. The visible light transmitting region 110 corresponds to the pixel 141, the wiring 142a, and the like. The pixel 141 does not have any members that block visible light, such as the wiring 142b. When the wiring 142a or the wiring 142b transmits visible light, the wiring 142a or the wiring 142b is It may be provided extending to.

[0308] Fig. 28(D) is a cross-sectional view taken along the line A1-A2 in Fig. 28(C). Display panel 100 has a pair of substrates (substrate 151 and substrate 152) that transmit visible light. The substrate 151 and the substrate 152 are bonded together by an adhesive layer 154. The substrate on which 141 and wiring 142b etc. are formed is referred to as substrate 151.

[0309] As shown in FIGS. 28(C) and 28(D), when the pixel 141 is located at the extreme edge of the display area 101, In this case, the width W1 of the region 110 that transmits visible light is This is the length to the edge of the pixel 141.

[0310] The edge of the pixel 141 is the edge of the member that blocks visible light included in the pixel 141. Alternatively, the pixel 141 may have a layer containing a light-emitting material between a pair of electrodes. When a light-emitting element including the light-emitting material is used, the edge of the pixel 141 is the edge of the lower electrode. It may be either the edge of the layer or the edge of the upper electrode.

[0311] FIG. 29A is an example of an enlarged top view of the area Z2, and the position of the wiring 142a is the same as that of FIG. 29(B) is different from the cross section taken along the dashed line B1-B2 in FIG. ) and a cross-sectional view taken along the dashed line C1-C2 is shown in FIG. 29(C).

[0312] As shown in FIGS. 29(A) to 29(C), the wiring 142a is located at the extreme edge of the display area 101. In this case, the width W1 of the region 110 that transmits visible light is It should be noted that when the wiring 142a transmits visible light, The region where the wiring 142a is provided may be included in the region 110 that transmits visible light.

[0313] As described above, the display device of one embodiment of the present invention has two overlapping display panels. The display area of ​​the display panel is the area that transmits visible light on the upper display panel, on the display side. The display panel has a display element whose area is the closest to the area that blocks visible light. The area of ​​the display element of each pixel is larger than the area of ​​the display element of the pixel. A display area having dummy pixels is provided between the pixel area and the display area. The color is the same as the pixel closest to the dummy pixel in the display area. The signal and source signal are the gate signal and the gate signal supplied to the pixel closest to the dummy pixel in the display area. The source signal is equal to the position of the display panel. Therefore, if the position of the display panel is such that the two display panels are separated, When there is a misalignment, it is possible to prevent the image from appearing to be cut off near the boundary between the two display panels. This also prevents the seams of the display panels from becoming more visible to the user.

[0314] This embodiment mode can be combined with other embodiment modes as appropriate.

[0315] (Embodiment 2) In this embodiment, a display panel that can be used for a display device of one embodiment of the present invention will be described. This will be explained using the diagram.

[0316] In this embodiment, a display panel using EL elements as display elements will be described as an example.

[0317] The display panel is constructed so that one color is expressed using three sub-pixels: R (red), G (green), and B (blue). A structure in which one color is expressed by four sub-pixels of R, G, B, and W (white), or a structure in which one color is expressed by four sub-pixels of R, G, B, and W (white), A configuration in which one color is expressed by four sub-pixels of Y (yellow), Y (yellow), and Y (yellow) can be applied. Colors other than RGBWY (for example, cyan or magenta) may also be used.

[0318] <Configuration example 1> 30(A) and (B) show top views of the display panel 370. FIG.

[0319] The display panels 370 shown in FIGS. 30(A) and 30(B) each have a region 11 that transmits visible light. 30A, the display portion 381 and the driver circuit portion 382 are transparent to visible light. In this example, the display area 110 is adjacent to the display unit 381 and is arranged along two sides of the display unit 381. In FIG. 30B, the region 110 that transmits visible light is adjacent to the display portion 381. An example in which the indicators are arranged along three sides of the indicator 381 is shown.

[0320] FIG. 30(C) shows a top-emission display panel that uses a color filter method. 30(C) shows a cross-sectional view of the portion of the semiconductor device 370 along the dashed line A1- in FIGS. This corresponds to the cross-sectional view between A2 and A3-A4.

[0321] The display panel 370 includes a flexible substrate 371, an adhesive layer 377, an insulating layer 378, and a plurality of transistors. a capacitor 305, a conductive layer 307, an insulating layer 312, an insulating layer 313, an insulating layer 314, an insulating layer 315, an insulating layer 316, an insulating layer 317, an insulating layer 318, an insulating layer 319, an insulating layer 320, an insulating layer 321, an insulating layer 322, an insulating layer 323, an insulating layer 324, an insulating layer 325, Edge layer 315, light emitting element 304, conductive layer 355, spacer 316, adhesive layer 317, coloring layer 3 25, a light-shielding layer 326, a flexible substrate 372, an adhesive layer 375, and an insulating layer 376. Each layer included in the visible light transmitting region 110 transmits visible light.

[0322] The driver circuit portion 382 includes a transistor 301. The display portion 381 includes a transistor 302. and a transistor 303.

[0323] Each transistor has a gate, a gate insulating layer 311, a semiconductor layer, a source, and a drain. The gate and the semiconductor layer overlap with each other via a gate insulating layer 311. A part of the capacitor 305 functions as a dielectric of the transistor 302. The conductive layer functioning as the drain also serves as one electrode of the capacitor 305 .

[0324] 30C shows a bottom-gate transistor. The transistor structure may be different between the driving circuit section 382 and the display section 381. Each of the transistors 81 may have multiple types of transistors.

[0325] The capacitor 305 has a pair of electrodes and a dielectric between them. The conductive layer is made of the same material and formed in the same process as the gate of the transistor. The source and drain have a conductive layer formed of the same material and in the same process.

[0326] The insulating layer 312, the insulating layer 313, and the insulating layer 314 each cover the transistors and the like. The number of insulating layers covering the transistors and the like is not particularly limited. The insulating layer 312, the insulating layer 313, and the insulating layer 314 each have a function as a smoothing layer. At least one layer is preferably made of a material that is difficult for impurities such as water or hydrogen to diffuse into. This makes it possible to effectively prevent external impurities from diffusing into the transistor. This can improve the reliability of the display panel.

[0327] When an organic material is used for the insulating layer 314, the insulating layer 314 exposed at the edge of the display panel is There is a risk that impurities such as moisture may enter the light emitting elements 304 and the like from the outside of the display panel through the insulating film. If the light emitting element 304 deteriorates due to the intrusion of impurities, it will lead to deterioration of the display panel. Therefore, as shown in FIG. 30(C), the insulating layer 314 is not exposed to the inorganic film (the insulating layer 313 in this example). By providing an opening through which impurities such as moisture can penetrate from the outside of the display panel, the light emitting element 304 can be protected. It is preferable to make the structure difficult to reach.

[0328] 34A shows a cross-sectional view of the insulating layer 314 when the opening is not provided. 4(A), when the insulating layer 314 is provided over the entire surface of the display panel, This is preferable because it can increase the yield in the peeling step described below.

[0329] FIG. 34(B) shows a cross-sectional view in which the insulating layer 314 is not located at the edge of the display panel. In the configuration of FIG. 34(B), the insulating layer using an organic material is not located at the edge of the display panel. Therefore, it is possible to prevent impurities from entering the light emitting element 304 .

[0330] The light-emitting element 304 includes an electrode 321, an EL layer 322, and an electrode 323. The light emitting element 304 may have an optical adjustment layer 324. The light emitting element 304 emits light toward the colored layer 325. Inject.

[0331] By arranging the transistor, the capacitor, the wiring, etc. so as to overlap with the light emitting region of the light emitting element 304, As a result, the aperture ratio of the display section 381 can be increased.

[0332] One of the electrodes 321 and 323 functions as an anode, and the other functions as a cathode. A voltage higher than the threshold voltage of the light emitting element 304 is applied between the electrode 321 and the electrode 323. As a result, holes are injected into the EL layer 322 from the anode side, and electrons are injected from the cathode side. The electrons and holes are recombined in the EL layer 322, and the luminescent material contained in the EL layer 322 It glows.

[0333] The electrode 321 is electrically connected to the source or drain of the transistor 303. The electrodes 321 are connected directly or via other conductive layers. The adjacent two electrodes 321 are connected to the insulating layer 3 It is electrically insulated by 15.

[0334] The EL layer 322 is a layer containing a light-emitting material. An organic EL device using the compound can be suitably used.

[0335] The EL layer 322 has at least one light-emitting layer. The EL layer 322 has multiple light-emitting layers. The EL layer 322 may be formed by using a material other than the light-emitting layer that has a high hole injection property, a material having a high hole transport property, a material with high electron transporting properties, a hole blocking material, a material with high electron transporting properties, a material with high electron injecting properties, or The semiconductor device further includes a layer containing a bipolar substance (a substance having high electron transporting and hole transporting properties). It is possible.

[0336] The EL layer 322 can be made of either a low molecular weight compound or a high molecular weight compound. The layers constituting the EL layer 322 may each be formed by evaporation (vacuum evaporation). The method may include a transfer method, a printing method, an ink jet method, a coating method, etc. do.

[0337] The light emitting element 304 may contain two or more types of luminescent materials. For example, it is possible to realize a light-emitting element that emits color light. White light can be obtained by selecting luminescent materials so that they have a complementary color relationship. For example, R (red), G (green), B (blue), Y (yellow), or O (orange) may be emitted. A luminescent material or a luminescent material that emits light containing two or more of the R, G, and B spectral components For example, a light-emitting material that emits blue light and a light-emitting material that emits yellow light can be used. In this case, the emission spectrum of the luminescent material that emits yellow light is the same as that of the green and red light. The light emitting element 31 preferably has an emission spectrum in the visible region. Wavelength (e.g., 350 nm to 750 nm, or 400 nm to 800 nm, etc.) It is preferable that the wavelength has two or more peaks within the range.

[0338] The light emitting element 304 may be a single element having one EL layer, or may be a charge generating element. The device may be a tandem device having a plurality of EL layers stacked with an intervening layer.

[0339] Inorganic compounds such as quantum dots can also be used as luminescent materials. nm-sized semiconductor nanocrystals, with a size of 1×10 3 Pieces to 1×10 6 Consists of about atoms Quantum dots have a size-dependent energy shift, so they are composed of the same material. Even if quantum dots are synthesized, the emission wavelength varies depending on the size. The emission wavelength can be easily adjusted by changing the size.

[0340] Quantum dots have a narrow peak width in the emission spectrum, making it possible to obtain light emission with good color purity. Furthermore, the theoretical internal quantum efficiency of quantum dots is said to be nearly 100%. By using quantum dots as a light-emitting material, a light-emitting device with high light-emitting efficiency can be obtained. Furthermore, quantum dots are inorganic compounds and have excellent inherent stability. In addition, a light-emitting element that is preferable in terms of life can be obtained.

[0341] The materials that make up quantum dots include elements in group 14 of the periodic table, elements in group 15 of the periodic table, and Group 16 elements, compounds consisting of multiple Group 14 elements, Groups 4 to 1 Compounds of elements in Group 4 and Group 16 of the periodic table, and compounds of elements in Group 2 and Group 16 of the periodic table Compounds with elements, compounds with elements in group 13 of the periodic table and elements in group 15 of the periodic table, compounds with elements in group 13 of the periodic table Compounds of elements and elements from Group 17 of the periodic table, compounds of elements from Group 14 of the periodic table and elements from Group 15 of the periodic table compounds of elements in Group 11 of the periodic table and elements in Group 17 of the periodic table, iron oxides, titanium oxides, Examples include chalcogenide spinels and various semiconductor clusters.

[0342] Examples of materials that make up quantum dots include cadmium selenide, cadmium sulfide, and tetrafluoroethylene. Cadmium sulphide, zinc sulphide, indium phosphide, lead selenide, lead sulphide, selenium and zinc Cadmium compounds, cadmium, selenium and sulfur compounds, etc. It is also possible to use so-called alloy quantum dots in which the ratios are expressed as arbitrary ratios. The quantum dots, which are alloys of selenium, selenium, and sulfur, can change the emission wavelength by changing the ratio of the elements. This is an effective way to obtain blue light emission because it can be changed.

[0343] Quantum dot structures include core type, core-shell type, and core-multishell type. Since the quantum efficiency of light emission is greatly improved, the core-shell type or It is preferable to use core-multishell quantum dots. Examples of shell materials include Examples of zinc oxide include zinc sulfide and zinc oxide.

[0344] Quantum dot materials include colloidal quantum dot materials, alloy quantum dot materials, core-shell quantum dot materials, and Examples of quantum dot materials include shell-type quantum dot materials and core-type quantum dot materials. For example, cadmium (Cd), selenium (Se), zinc (Zn), sulfur (S), and phosphorus (P). , indium (In), tellurium (Te), lead (Pb), gallium (Ga), arsenic (As) , and may contain elements such as aluminum (Al).

[0345] Quantum dots have a high proportion of surface atoms, making them highly reactive and prone to aggregation. Therefore, the surface of quantum dots is often provided with a protective agent or protective groups. This is preferable because it can prevent the quantum dots from agglomerating and increase their solubility in solvents. It can also reduce reactivity and improve electrical stability.

[0346] The size (diameter) of the quantum dots is 0.5 nm or more and 20 nm or less, preferably 1 nm or more and 10 nm or less. Quantum dots are usually used in the range of nanometers or less. The narrower the emission spectrum, the more excellent the color purity of the light emitted. The shape of the quantum dots is not particularly limited, and may be spherical, rod-shaped, disc-shaped, or other shapes. .

[0347] Quantum dots maintain their luminous efficiency even when the light-emitting layer is made up of only quantum dots without using a host material. Therefore, in this respect, a light emitting element that is preferable in terms of life can be obtained. When the light-emitting layer is formed only from quantum dots, the quantum dots have a core-shell structure (core- It is preferable that the structure is a multi-shell structure.

[0348] The electrode 323 functions as a common electrode and is provided across the plurality of light-emitting elements 304. A constant potential is applied to the electrode 323 .

[0349] The light emitting element 304 overlaps the colored layer 325 via the adhesive layer 317. The spacer 316 30C, the light emitting element 304 and the light blocking layer 326 are overlapped with each other through the adhesive layer 317. Although there is a gap between the 326 and the 326, they may be in contact with each other. ) shows a configuration in which the spacer 316 is provided on the flexible substrate 371 side. It may be provided on the second side (for example, closer to the flexible substrate 371 than the light-shielding layer 326).

[0350] A combination of a color filter (colored layer 325) and a microcavity structure (optical adjustment layer 324) By combining these, light with high color purity can be extracted from the display panel. The thickness of the layer 324 varies depending on the color of each pixel.

[0351] The colored layer is a colored layer that transmits light in a specific wavelength band, for example, red, green, blue, or A color filter that transmits light in the yellow wavelength range can be used. The materials that can be used include metal materials, resin materials, and materials containing pigments or dyes. Resin materials and the like are examples.

[0352] Note that one embodiment of the present invention is not limited to the color filter method, but may be a color-coded method, a color conversion method, Alternatively, a quantum dot method or the like may be applied.

[0353] The light-shielding layer is provided between adjacent colored layers. The light-shielding layer blocks light from the adjacent light-emitting element. The colored layer is formed on the edge of the light-shielding layer, and the colored layer is formed on the edge of the light-shielding layer. By providing the light-shielding layer so that it overlaps with the light-emitting layer, it is possible to suppress light leakage. A material that blocks light from the element can be used, for example, a metallic material, or a pigment or dye. The black matrix can be formed using a resin material containing the following: When placed in areas other than the pixel area, such as the driver circuit, unintended light leakage caused by guided light is suppressed. This is preferable because it can

[0354] As shown in FIG. 34(A), the display panel preferably has an overcoat 329. The overcoat 329 prevents impurities contained in the colored layer 325 from reaching the light emitting element 304. The overcoat 329 is transparent to the light from the light emitting element 304. For example, the insulating film may be an inorganic insulating film such as a silicon nitride film or a silicon oxide film, or Organic insulating films such as acrylic films and polyimide films can be used. It may also have a laminated structure.

[0355] In addition, when the material of the adhesive layer 317 is applied onto the colored layer 325 and the light-shielding layer 326, The material of the coating 329 may be a material that has high wettability with respect to the material of the adhesive layer 317. For example, the overcoat 329 is preferably made of indium tin oxide (ITO). A conductive oxide film such as an SiO2 film or a thin film having a light-transmitting property is used. It is preferable to use a metal film such as a g film.

[0356] By using a material that has high wettability with respect to the material of the adhesive layer 317 for the overcoat 329, This allows the material of the adhesive layer 317 to be applied uniformly. This can prevent air bubbles from being mixed in when the liquid crystal display device is brought into contact with the liquid crystal display, thereby preventing display defects.

[0357] The insulating layer 378 and the flexible substrate 371 are bonded together by an adhesive layer 377. The edge layer 376 and the flexible substrate 372 are bonded together by an adhesive layer 375. It is preferable to use a highly moisture-proof film for the insulating layer 378. By disposing the light emitting element 304 and the transistors between the layers, these elements are protected from impurities such as water. This is preferable because it can prevent impurities from entering and improve the reliability of the display panel.

[0358] Highly moisture-proof insulating films include silicon nitride films and silicon nitride oxide films containing nitrogen and silicon. and films containing nitrogen and aluminum, such as aluminum nitride films. A silicon oxide film, a silicon oxynitride film, an aluminum oxide film, or the like may also be used.

[0359] For example, the water vapor permeability of a highly moisture-proof insulating film is 1×10 -5 [g / (m 2 ·day)] Less than 1 × 10 -6 [g / (m 2 ·day)] or less, more preferably 1 × 10 -7 [g / (m 2 ·day)] or less, more preferably 1 × 10 -8 [g / (m 2 ·da y)] or less.

[0360] The connection portion 306 includes a conductive layer 307 and a conductive layer 355. The conductive layer 307 is electrically connected to the source and drain of the transistor. The conductive layer 355 can be formed using the same material and in the same process. The external input terminal is electrically connected to the external terminal for transmitting a signal or potential from the outside. This shows an example in which an FPC 373 is provided as an input terminal. 3 and the conductive layer 355 are electrically connected.

[0361] The connector 319 may be made of various anisotropic conductive films (ACF). Conductive Film) and Anisotropic Conductive Paste (ACP) Pic Conductive Paste) can be used.

[0362] The flexible substrates 371 and 372 each have a thickness sufficient to provide flexibility. Materials such as glass, quartz, resin, metal, alloy, and semiconductor can be used. The substrate on the side where light is extracted from the substrate is made of a material that transmits the light. The thickness is preferably 1 μm or more and 200 μm or less, and more preferably 1 μm or more and 100 μm or less. More preferably, the thickness is 10 μm or more and 50 μm or less, and even more preferably, the thickness is 10 μm or more and 25 μm or less. The thickness and hardness of the flexible substrate should be within a range that satisfies both mechanical strength and flexibility. The flexible substrate may have a single layer structure or a laminate structure.

[0363] Since resin has a smaller specific gravity than glass, using resin as a flexible substrate is much easier than using glass. This is preferable because it allows the display panel to be lighter than when the display panel is mounted.

[0364] It is preferable to use a highly tough material for the substrate. This makes it superior in impact resistance and breakage resistance. For example, a display panel made of a resin substrate, a thin metal substrate, or By using an alloy substrate, it is lighter and less likely to break than when using a glass substrate. This makes it possible to realize a high-quality display panel.

[0365] Metallic and alloy materials have high thermal conductivity and can easily conduct heat across the entire substrate, making it ideal for display panels. It is preferable to use a metal material or an alloy material because it can suppress a local temperature rise in the panel. The thickness of the substrate is preferably 10 μm or more and 200 μm or less, and more preferably 20 μm or more and 50 μm or less. It is more preferable to have one.

[0366] The material for forming the metal substrate or alloy substrate is not particularly limited, but for example, aluminum Preferably, the material is a metal alloy such as aluminum, copper, nickel, or an aluminum alloy or stainless steel. The semiconductor substrate can be suitably used. Examples of materials that form the semiconductor substrate include silicon. .

[0367] In addition, if a material with high thermal emissivity is used for the substrate, the surface temperature of the display panel can be prevented from rising. Therefore, damage to the display panel and a decrease in reliability can be suppressed. The thickness of a layer with high thermal emissivity (for example, a metal oxide or ceramic material can be used) It may also have a layered structure.

[0368] Examples of flexible and light-transmitting materials include polyester resins such as PET and PEN. , polyacrylonitrile resin, acrylic resin, polyimide resin, polymethyl methacrylate Polyamide resin (nylon, aramid, etc.), polysiloxane San resin, cycloolefin resin, polystyrene resin, polyamide-imide resin, polyurethane Tan resin, polyvinyl chloride resin, polyvinylidene chloride resin, polypropylene resin, PTF E resin, ABS resin, etc. In particular, it is preferable to use a material with a low linear expansion coefficient. For example, polyamide-imide resin, polyimide resin, polyamide resin, PET, etc. are preferred. In addition, a substrate in which a fiber body is impregnated with a resin and an inorganic filler in which a resin is impregnated with a fiber body can be used. It is also possible to use a substrate or the like in which the linear expansion coefficient is reduced by mixing with

[0369] As for the flexible substrate, a layer using the above material is used as a hard cover to protect the surface of the device from scratches. a layer of a material that can disperse pressure (e.g., aramid) The insulating layer may be laminated with at least one of a layer of a material such as a resin layer.

[0370] When the flexible substrate has a glass layer, the barrier properties against water and oxygen are improved. This makes it possible to provide a highly reliable display panel.

[0371] For example, a flexible substrate is used in which a glass layer, an adhesive layer, and a 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 resistant to water and oxygen. It is possible to simultaneously achieve high barrier properties and flexibility. The thickness of the resin layer is set to 200 μm or less, preferably 20 μm or more and 50 μm or less. By doing so, it is possible to suppress breakage and cracks in the glass layer and improve the mechanical strength. By applying such a composite material of glass and resin to the substrate, extremely reliable This makes it possible to provide a highly reliable and flexible display panel.

[0372] 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 vapor-curing adhesives can be used. Good too.

[0373] The adhesive layer may also contain a desiccant. For example, an alkaline earth metal oxide (oxide Use substances that adsorb moisture by chemical adsorption, such as calcium oxide and barium oxide. Alternatively, moisture can be absorbed by physical adsorption, such as with zeolite or silica gel. If a desiccant is included, impurities such as moisture can be absorbed into the functional element. This is preferable because it can suppress the intrusion of foreign matter and improve the reliability of the display panel.

[0374] Furthermore, by including a filler or a light scattering material with a high refractive index in the adhesive layer, the light emitted from the light emitting element can be It is possible to improve the light extraction efficiency. For example, titanium oxide, barium oxide, zeolite For example, tungsten, zirconium, etc. can be used.

[0375] The light emitting element can be a self-luminous element, and the brightness can be controlled by a current or a voltage. This category includes devices that are controlled by light emitting diodes (LEDs), organic An organic EL element, an inorganic EL element, or the like can be used in the display panel of one embodiment of the present invention. Various display elements can be used. For example, liquid crystal elements, electrophoretic elements, and MEMS can be used. A display element or the like used in the above method may also be applied.

[0376] The light emitting element may be either a top emission type or a bottom emission type. The electrode on the side from which light is extracted uses a conductive film that transmits visible light. For the electrodes, it is preferable to use a conductive film that reflects visible light.

[0377] The conductive film that transmits visible light is, for example, indium oxide, ITO, indium zinc oxide, It can be formed using zinc oxide (ZnO), ZnO doped with gallium, etc. Gold, silver, platinum, magnesium, nickel, tungsten, chromium, molybdenum, iron, Metallic materials such as cobalt, copper, palladium, or titanium, and alloys containing these metallic materials; Alternatively, nitrides of these metal materials (for example, titanium nitride) can be formed thin enough to have translucency. Furthermore, a laminated film of the above materials can be used as a conductive film. For example, if a laminated film of an alloy of silver and magnesium and ITO is used, the conductivity can be increased. Graphene or the like may also be used.

[0378] The conductive film that reflects visible light is made of, for example, aluminum, gold, platinum, silver, nickel, or tungsten. Metallic materials such as zinc, chromium, molybdenum, iron, cobalt, copper, or palladium, or Alloys containing these metal materials can be used. Tungsten, neodymium, germanium, etc. may be added. Aluminum alloy, aluminum-nickel alloy, aluminum-neodymium alloy, aluminum Aluminum-containing alloys, such as aluminum, nickel, and lanthanum alloys (Al-Ni-La) (aluminum alloy), silver-copper alloy, silver-palladium-copper alloy (Ag-Pd-Cu, A silver-copper alloy, such as an alloy of silver and magnesium, may also be used. The alloy containing aluminum is preferable because it has high heat resistance. By laminating a metal oxide film, oxidation of the aluminum alloy film can be suppressed. Examples of materials for the metal film and metal oxide film include titanium and titanium oxide. The conductive film that transmits visible light may be laminated with a film made of a metal material. For example, a film made of silver and I A laminated film of TO, a laminated film of an alloy of silver and magnesium and ITO, etc. can be used.

[0379] The electrodes can be formed by vapor deposition or sputtering. or by using a discharge method such as an ink jet method, a printing method such as a screen printing method, or a plating method. It can be formed by

[0380] The structure of the transistor included in the display panel is not particularly limited. It may be a staggered transistor, or an inverse staggered transistor. The transistor may be either a top gate type or a bottom gate type. Alternatively, gate electrodes may be provided above and below the channel.

[0381] The crystallinity of the semiconductor material used in the transistor is not particularly limited. A semiconductor having crystallinity (microcrystalline semiconductor, polycrystalline semiconductor, single crystal semiconductor, or a semiconductor having a partially crystalline region) When a semiconductor having crystallinity is used, the transistor This is preferable because it can suppress deterioration of the star characteristics.

[0382] The semiconductor material used for the transistor is not particularly limited, and may be, for example, a group 14 element, a compound semiconductor, or the like. A conductor or an oxide semiconductor can be used for the semiconductor layer. A conductor, a semiconductor containing gallium arsenide, or an oxide semiconductor containing indium can be used. .

[0383] In particular, it is preferable to use an oxide semiconductor as a semiconductor in which a channel of a transistor is formed. It is particularly preferable to use an oxide semiconductor having a larger band gap than silicon. It is desirable to use a semiconductor material with a wider band gap and lower carrier density than silicon. This is preferable because it can reduce the current in the off state of the transistor.

[0384] For example, the oxide semiconductor may contain at least indium (In) or zinc (Zn). More preferably, the oxide contains In-M-Zn (wherein M is Al, Ti, Ga). , Ge, Y, Zr, Sn, La, Ce, Hf or Nd) nothing.

[0385] As a semiconductor material used for transistors, CAAC-OS (C Axis Alignment d Crystalline Oxide Semiconductor) Unlike amorphous materials, CAAC-OS has few defect levels and is therefore suitable for transistor reliability. CAAC-OS has the advantage that no grain boundaries are visible. Therefore, it is possible to form a stable and uniform film over a large area, and the surface is flexible. The CAAC-OS film is less likely to crack due to stress caused when the display device is bent.

[0386] CAAC-OS is a crystalline oxide semiconductor whose c-axis is aligned approximately perpendicular to the film surface. Another example of the crystalline structure of oxide semiconductors is nanoscale microcrystalline aggregates. There are various structures that differ from single crystals, such as nanocrystals (nc). It has been confirmed that CAAC-OS has lower crystallinity than single crystals and has a higher crystallinity than nc. High crystallinity.

[0387] In addition, the CAAC-OS has a c-axis orientation and multiple pellets in the ab-plane direction. The CAAC-OS is a composite of nanocrystals (nanocrystals) that are interconnected and have a distorted crystal structure. , CAA crystal(c-axis-aligned ab-plane-an It can also be called an oxide semiconductor having a chord crystal.

[0388] An insulating layer included in the display panel can be made of an organic insulating material or an inorganic insulating material. Examples of resins include acrylic resin, epoxy resin, polyimide resin, and polyamide resin. , polyimide amide resin, siloxane resin, benzocyclobutene resin, phenolic resin Examples of inorganic insulating films include silicon oxide films, silicon oxynitride films, and silicon nitride oxide films. Silicon film, silicon nitride film, aluminum oxide film, hafnium oxide film, yttrium oxide film film, zirconium oxide film, gallium oxide film, tantalum oxide film, magnesium oxide film, Examples of the thin film include a lanthanum oxide film, a cerium oxide film, and a neodymium oxide film.

[0389] The conductive layers of the display panel are made of aluminum, titanium, chromium, nickel, Copper, yttrium, zirconium, molybdenum, silver, tantalum, or tungsten Any metal or alloy containing this metal as the main component can be used as a single layer structure or a laminated structure. Or indium oxide, ITO, indium oxide containing tungsten, tungsten Indium zinc oxide containing titanium, indium oxide containing titanium, ITO containing titanium , indium zinc oxide, ZnO, gallium-doped ZnO, or silicon-containing indium A conductive material having a light-transmitting property, such as zinc tin oxide, may be used. a semiconductor such as polycrystalline silicon or an oxide semiconductor, which has been made low-resistance by, for example, Silicides such as nickel silicide may also be used. Also, a film containing graphene may be used. The graphene-containing film may be, for example, a film containing graphene oxide formed in a film shape. In addition, a semiconductor such as an oxide semiconductor containing an impurity element can be formed by reducing the Alternatively, conductive paste such as silver, carbon, or copper, or polycarbonate may be used. The conductive paste may be formed using a conductive polymer such as olefin. Conductive polymers are preferred because they are easy to apply.

[0390] FIG. 30(C) is a cross-sectional view of a display device having two display panels 370 stacked on top of each other. Shown in Figure 31.

[0391] In FIG. 31, the display area 101a of the lower display panel (the display unit 381 shown in FIG. 30(C)) 30(C)) and the visible light blocking region 120a (corresponding to the driving circuit section 382 etc. shown in FIG. 30(C)) , and the display area 101b of the upper display panel (corresponding to the display unit 381 shown in FIG. 30(C)). 30(C)) and a visible light transmitting region 110b (the visible light transmitting region 11 shown in FIG. 30(C)). 0).

[0392] In the display device shown in FIG. 31, the display panel located on the display surface side (upper side) is transparent to visible light. The display area of ​​the lower display panel is adjacent to the display area 101b. The area 101a overlaps with the area 110b of the upper display panel that transmits visible light. This reduces the non-display area between the display areas of the two overlapping display panels, and further reduces the This allows for a large display where the seams of the display panel are less noticeable to the user. It is possible to realize a display device.

[0393] The display device shown in FIG. 31 has a transparent region 110b between the display region 101a and the region 110b that transmits visible light. The transparent layer 103 has a refractive index higher than that of air and transmits visible light. This can prevent air from entering between the display area 101a and the area 110b that transmits visible light, This reduces reflection at the interface due to the difference in refractive index. Alternatively, it is possible to suppress uneven brightness.

[0394] The light-transmitting layer 103 is formed on the flexible substrate 372 of the lower display panel or the flexible substrate 373 of the upper display panel. It may overlap the entire surface of the plate 371, or may overlap the display area 101a and the area that transmits visible light. The transparent layer 103 may overlap only the area 110b that blocks visible light. It may overlap with a.

[0395] For example, the light-transmitting layer 103 may be an adsorption film having an adsorption layer on both sides of a substrate. This can be done.

[0396] <Example of manufacturing method for configuration example 1> An example of a manufacturing method for Configuration Example 1 will be described with reference to FIGS. 32 and 33. 10A to 10C are cross-sectional views illustrating a method for manufacturing a display portion 381 of the display panel 370. FIG.

[0397] First, as shown in FIG. 32(A), a peeling layer 403 is formed on a formation substrate 401. Next, A layer to be peeled is formed on the peeling layer 403. Here, the layer to be peeled formed on the peeling layer 403 is These are the layers from the insulating layer 378 to the light emitting element 304 in FIG.

[0398] The substrate 401 to be fabricated is a substrate having heat resistance that can withstand at least the processing temperature during the fabrication process. The substrate 401 may be, for example, a glass substrate, a quartz substrate, a sapphire substrate, a semiconductor substrate, or the like. It is possible to use a solid substrate, a ceramic substrate, a metal substrate, a resin substrate, a plastic substrate, etc. Cut.

[0399] In order to improve mass productivity, a large glass substrate may be used as the substrate 401. For example, 3rd generation (550mm x 650mm) or higher and 10th generation (2950mm) It is preferable to use a glass substrate of 3400 mm or less or a larger size. I wish.

[0400] When a glass substrate is used as the formation substrate 401, a lower layer is formed between the formation substrate 401 and the peeling layer 403. As the base film, a silicon oxide film, a silicon oxynitride film, a silicon nitride film, or a silicon nitride oxide film Forming an insulating film such as a chrome film is preferable because it can prevent contamination from the glass substrate.

[0401] The release layer 403 may be made of tungsten, molybdenum, titanium, tantalum, niobium, nickel, or copper. Baltic, Zirconium, Zinc, Ruthenium, Rhodium, Palladium, Osmium, Iridium an element selected from aluminum and silicon, an alloy material containing the element, or a compound material containing the element The crystal structure of the silicon-containing layer may be amorphous, microcrystalline, or polycrystalline. Also, aluminum oxide, gallium oxide, titanium dioxide, indium oxide Metal oxides such as ITO, indium zinc oxide, and In-Ga-Zn oxide may also be used. The peeling layer 403 is made of a high melting point metal material such as tungsten, titanium, or molybdenum. This is preferable because it increases the degree of freedom in the process of forming the peeled layer.

[0402] The peeling layer 403 can be formed by, for example, sputtering, plasma CVD, or coating (spin coating). The peeling layer 4 can be formed by a method such as a coating method, a droplet discharging method, a dispensing method, or the like, a printing method, or the like. The thickness of O3 is, for example, 1 nm or more and 200 nm or less, preferably 10 nm or more and 100 nm or less. Let's say.

[0403] When the release layer 403 has a single layer structure, it is made of a tungsten layer, a molybdenum layer, or a combination of tungsten and molybdenum. It is preferable to form a layer containing a mixture of tungsten and tungsten oxide. a layer containing an oxide or oxynitride of molybdenum, a layer containing an oxide or oxynitride of molybdenum, or a layer containing tungsten A layer containing an oxide or oxynitride of a mixture of stainless steel and molybdenum may also be formed. The mixture of tungsten and molybdenum is, for example, an alloy of tungsten and molybdenum. is equivalent to

[0404] The peeling layer 403 may be a stack of a layer containing tungsten and a layer containing tungsten oxide. When forming a layer structure, a layer containing tungsten is formed, and an insulating layer formed of oxide is formed on the layer. By forming an insulating film, the interface between the tungsten layer and the insulating film contains tungsten oxide. It is also possible to utilize the fact that a layer containing tungsten is formed. Treatment, oxygen plasma treatment, nitrous oxide (N2O) plasma treatment, ozone water, etc. Alternatively, a layer containing tungsten oxide may be formed by treating the surface with a solution containing tungsten. The curing or heat treatment may be carried out using oxygen, nitrogen, or nitrous oxide, either alone or in combination with other gases. The plasma treatment or heat treatment can be carried out under a mixed gas atmosphere. By changing the surface condition of the peeling layer 403, the adhesion between the peeling layer 403 and the insulating film to be formed later can be controlled. It is possible to do this.

[0405] Note that if separation can be achieved at the interface between the formation substrate and the layer to be peeled, a peeling layer does not have to be provided. For example, glass is used as the substrate, and polyimide, polyester, or polyimide is placed in contact with the glass. An organic resin such as olefin, polyamide, polycarbonate, or acrylic is formed. By performing laser irradiation or heat treatment, the adhesion between the formation substrate and the organic resin is improved. Then, an insulating film and a transistor are formed on the organic resin. Laser irradiation with high energy density or heat treatment at a higher temperature than the previous heat treatment By carrying out the above steps, it is possible to separate the organic resin from the substrate at the interface. Alternatively, separation may be achieved by allowing a liquid to penetrate into the interface between the substrate and the organic resin.

[0406] The organic resin may be used as a substrate for constituting a device, or the organic resin may be removed, Another substrate may be attached to the exposed surface of the layer to be peeled using an adhesive.

[0407] Alternatively, a metal layer is provided between the substrate and the organic resin, and a current is passed through the metal layer. The metal layer may be heated to separate the organic resin at the interface between the metal layer and the organic resin.

[0408] The insulating layer 378 is a silicon nitride film, a silicon oxynitride film, a silicon oxide film, or a nitride oxide film. It is preferable to form the insulating film 11 by using a silicon film or the like in a single layer or a laminated layer.

[0409] The insulating layer 378 is formed by using a sputtering method, a plasma CVD method, a coating method, a printing method, or the like. For example, it is possible to form a film at a temperature of 250°C or higher by plasma CVD. By forming the film at a temperature of 0°C or below, a dense and highly moisture-proof film can be obtained. The thickness of the insulating layer 378 is 10 nm or more and 3000 nm or less, and further 200 nm or more and 150 0 nm or less is preferable.

[0410] 32(B), a peeling layer 413 is formed over the formation substrate 411. Next, A layer to be peeled is formed on the peeling layer 413. Here, the layer to be peeled formed on the peeling layer 413 is These are the insulating layer 376, the light-shielding layer 326, and the colored layer 325 in FIG.

[0411] The formation substrate 411, the release layer 413, and the insulating layer 376 are formed by the formation substrate 401, the release layer 413, and the insulating layer 376, respectively. Materials that can be used for the release layer 403 and the insulating layer 378 can be applied.

[0412] Next, as shown in FIG. 32(C), the fabrication substrate 401 and the fabrication substrate 411 are bonded together with the adhesive layer 317. Use to attach it.

[0413] Next, as shown in Fig. 33(A), the manufacturing substrate 401 and the insulating layer 378 are separated. Either the fabrication substrate 401 or the fabrication substrate 411 may be separated first.

[0414] Before separating the substrate 401 from the insulating layer 378, the insulating layer 378 is cut with laser light or a sharp blade. It is preferable to form a starting point for peeling. Cracks are formed in a part of the insulating layer 378 (film cracks). For example, by irradiating the surface with laser light, the starting point of peeling can be formed. This can cause portions of the insulating layer 378 to melt, vaporize, or thermally break down.

[0415] Then, from the starting point of the peeling that has been formed, physical force (a process of peeling off with a human hand or a jig) is applied. or a process of separating the insulating layer 3 by rotating a roller that is in close contact with the substrate, etc. 33(A) shows the substrate 401 separated from the insulating layer 378. 33(A) shows the peeling layer 403 and the formation substrate 401. The insulating layer 378 and the flexible substrate 371 are bonded together using an adhesive layer 377 .

[0416] Next, as shown in Figure 33(B), the manufacturing substrate 411 and the insulating layer 376 are separated. The upper part of (B) shows the release layer 413 separated from the insulating layer 376 and the fabrication substrate 411. Then, the exposed insulating layer 376 and the flexible substrate 372 are bonded together using an adhesive layer 375. Can.

[0417] As described above, in one embodiment of the present invention, all of the functional elements constituting the display panel are formed on a substrate. Therefore, even when manufacturing a high-definition display panel, the flexible substrate Therefore, high alignment accuracy is not required, and the flexible substrate can be easily attached. In addition, functional elements can be fabricated at high temperatures, which allows for the realization of highly reliable display panels. can.

[0418] <Configuration example 2> FIG. 35(A) shows a cross-sectional view of a display panel to which a color filter system is applied. In the following configuration examples, detailed description of the same configuration as the previous configuration example will be omitted.

[0419] The display panel shown in FIG. 35(A) includes a flexible substrate 371, an adhesive layer 377, an insulating layer 378, and a plurality of a number of transistors, a conductive layer 307, an insulating layer 312, an insulating layer 313, an insulating layer 314, an insulating layer 315, light-emitting element 304, conductive layer 355, adhesive layer 317, colored layer 325, flexible substrate 37 2, and an insulating layer 376.

[0420] The driver circuit portion 382 includes a transistor 301. The display portion 381 includes a transistor 303. It has.

[0421] Each transistor comprises two gates, a gate insulating layer 311, a semiconductor layer, a source, and a drain. The two gates overlap the semiconductor layer via an insulating layer. ) shows an example in which a semiconductor layer is sandwiched between two gates in each transistor. Such a transistor has a higher field-effect mobility than other transistors. This allows the on-current to be increased, resulting in the creation of a circuit capable of high-speed operation. Furthermore, the area occupied by the circuit can be reduced. By applying large transistors, the display panel can be made larger or more precise, and the number of wirings increases. Even if the signal delay in each wiring is small, the brightness of the display can be reduced. In FIG. 35(A), one of the electrodes is made of the same material and in the same process as the electrode 321. An example of creating a gate is shown below.

[0422] The light emitting element 304 emits light toward the colored layer 325. The light emitting element 304 has an insulating layer 314. The colored layer 325 overlaps the light emitting element 304 and the flexible substrate 371. 35A shows an example in which the colored layer 325 is disposed on the insulating layer 313. FIG. 35(A) shows an example in which no light-shielding layer or spacer is provided.

[0423] <Configuration example 3> FIG. 35(B) shows a cross-sectional view of a display panel to which the separate coloring method is applied.

[0424] The display panel shown in FIG. 35(B) includes a flexible substrate 371, an adhesive layer 377, an insulating layer 378, and a plurality of a number of transistors, a conductive layer 307, an insulating layer 312, an insulating layer 313, an insulating layer 314, an insulating layer 315, a spacer 316, a light emitting element 304, an adhesive layer 317, a flexible substrate 372, and an insulating It has a layer 376.

[0425] The driver circuit portion 382 includes a transistor 301. The display portion 381 includes a transistor 302. , a transistor 303, and a capacitor 305.

[0426] Each transistor comprises two gates, a gate insulating layer 311, a semiconductor layer, a source, and a drain. The two gates overlap the semiconductor layer via an insulating layer. ) shows an example in which a semiconductor layer is sandwiched between two gates in each transistor. In FIG. 35(B), one of the gates is formed between the insulating layer 313 and the insulating layer 314. Here is an example:

[0427] The light emitting element 304 emits light toward the flexible substrate 372. 304 does not have an optical adjustment layer. The insulating layer 376 serves as a sealing layer for the light emitting element 304. It works.

[0428] The connection portion 306 has a conductive layer 307. The conductive layer 307 is connected to the FPC 3 via a connecting member 319. 73 and electrically connected to each other.

[0429] <Application example> In one embodiment of the present invention, a display device (an input / output device or a touch panel) equipped with a touch sensor is It is possible to create a polymer (also called a polymer).

[0430] There is no limitation on the detection elements (also referred to as sensor elements) included in the touch panel of one embodiment of the present invention. Various sensors that can detect the proximity or contact of a detected object such as a finger or stylus The sensor can be applied as a sensing element.

[0431] For example, the sensor types include capacitance type, resistive film type, surface acoustic wave type, and infrared type. Various methods can be used, such as optical methods and pressure-sensitive methods.

[0432] In this embodiment, a touch panel having a capacitance type detection element will be described as an example. .

[0433] The capacitance type includes a surface capacitance type, a projected capacitance type, etc. The capacitance type includes the self-capacitance type and the mutual capacitance type. This is preferable because it enables simultaneous multipoint detection.

[0434] The touch panel according to one embodiment of the present invention is formed by bonding a display panel and a sensing element that are separately manufactured. The display element is supported by a substrate supporting the display element and / or an opposing substrate. Various configurations can be applied, such as a configuration in which a pole or the like is provided.

[0435] <Configuration Example 4> FIG. 36(A) is a perspective schematic diagram of the touch panel 300. FIG. 36(B) is a perspective schematic diagram of the touch panel 300. ) is an exploded perspective schematic diagram. For clarity, only representative components are shown. In FIG. 36(B), some components (flexible substrate 330, flexible substrate 372, etc.) are indicated by dashed lines. Only the outline is shown.

[0436] The touch panel 300 includes an input device 310 and a display panel 370, which are overlapped. The touch panel 300 has an area 110 that transmits visible light. The light-transmitting region 110 is adjacent to the display unit 381 and is arranged along two sides of the display unit 381. are.

[0437] The input device 310 includes a flexible substrate 330, electrodes 331, electrodes 332, a plurality of wirings 341, and and a plurality of wirings 342. The FPC 350 has a plurality of wirings 341 and a plurality of wirings 342. The FPC350 is electrically connected to each of the IC351.

[0438] The display panel 370 includes a flexible substrate 371 and a flexible substrate 372 that face each other. The display panel 370 includes a display section 381 and a driving circuit section 382. Wiring 383 and the like are provided on the FPC 373. The FPC 373 is electrically connected to the wiring 383. FPC373 is equipped with IC374.

[0439] The wiring 383 has a function of supplying signals and power to the display portion 381 and the driver circuit portion 382. The signal and power are respectively supplied from the outside or IC374 via FPC373. It is input to wiring 383.

[0440] 37 shows an example of a cross-sectional view of the touch panel 300. In FIG. 37, a display unit 381, a driving The circuit portion 382, ​​the visible light transmitting region 110, the region including the FPC 373, and the FPC 35 37 shows the cross-sectional structure of the region including 0. Furthermore, in FIG. A wiring formed by processing a conductive layer and a conductive layer identical to the source and drain of a transistor 3 shows the cross-sectional structure of an intersection 387 where the wiring formed by processing the wiring intersects with the wiring.

[0441] The flexible substrate 371 and the flexible substrate 372 are bonded together by an adhesive layer 317 . Flexible substrate 372 and flexible substrate 330 are attached together by adhesive layer 396 . Here, each layer from the flexible substrate 371 to the flexible substrate 372 corresponds to the display panel 370. Each layer from the flexible substrate 330 to the electrode 334 corresponds to the input device 310. In other words, the adhesive layer 396 can be said to bond the display panel 370 and the input device 310 together. Alternatively, each layer from the flexible substrate 371 to the insulating layer 376 corresponds to the display panel 370. Each layer from the flexible substrate 330 to the flexible substrate 372 corresponds to the input device 310. That is, the adhesive layer 375 bonds the display panel 370 and the input device 310 together. It can also be said that...

[0442] The configuration of the display panel 370 shown in FIG. 37 is the same as that of the display panel shown in FIG. Therefore, detailed explanation will be omitted.

[0443] <Input device 310> An electrode 331 and an electrode 332 are provided on the flexible substrate 372 side of the flexible substrate 330. Here, an example is shown in which the electrode 331 has an electrode 333 and an electrode 334. As shown at the intersection 387 in FIG. 37, the electrodes 332 and 333 are formed on the same plane. The insulating layer 395 is provided to cover the electrodes 332 and 333. The electrode 334 is provided so as to sandwich the electrode 332 through an opening provided in the insulating layer 395. The electrode 333 is electrically connected to the two electrodes 333 .

[0444] A connecting portion 308 is provided in an area near the end of the flexible substrate 330. The wiring 342 and the conductive layer obtained by processing the same conductive layer as the electrode 334 are laminated to form a functional layer. The connecting portion 308 is electrically connected to an FPC 350 via a connecting member 309 .

[0445] The flexible substrate 330 is bonded to the insulating layer 393 by an adhesive layer 391. As in the manufacturing method of the input device 310, the elements are manufactured on a manufacturing substrate, and then the manufacturing substrate is peeled off. After that, the element can be transferred onto a flexible substrate 330. The insulating layer 393 and elements may be formed directly on the conductive substrate 330 (see FIG. 38(A)). .

[0446] <Configuration example 5> The touch panel shown in FIG. 38(A) does not have an adhesive layer 391 and has a transistor. 37 in that the configurations of the capacitors 301, 302, 303 and the capacitance element 305 are different. It is different from Chipanel.

[0447] FIG. 38(A) shows an example in which a transistor with a top gate structure is applied to a touch panel. vinegar.

[0448] Each transistor has a gate, a gate insulating layer 311, a semiconductor layer, a source, and a drain. The gate and the semiconductor layer overlap with each other via a gate insulating layer 311. The semiconductor layer has a low resistance. The low resistance region 348 may be a transistor solenoid. It functions as a source and drain.

[0449] The conductive layer provided over the insulating layer 313 functions as a lead wiring. 313, the insulating layer 312, and the gate insulating layer 311 through openings formed therein. is electrically connected to.

[0450] In FIG. 38A, the capacitor 305 is a layer formed by processing the same semiconductor layer as the semiconductor layer. The gate insulating layer 311 and the gate insulating layer 312 are laminated together to form a layer formed by processing the same conductive layer as the gate. Here, a channel of a transistor is formed in a part of the semiconductor layer of the capacitor 305. It is preferable that a region 349 having a higher conductivity than the region 347 is formed.

[0451] Regions 348 and 349 are regions 34 where the channel of the transistor is formed. 7, regions containing more impurities, regions with high carrier concentration, regions with low crystallinity, etc. It is possible.

[0452] The transistor 848 shown in FIGS. 38B to 38D is used in the display device of one embodiment of the present invention. You can also do this.

[0453] FIG. 38B shows a top view of a transistor 848. FIG. 38C shows one embodiment of the present invention. 38(C) is a cross-sectional view of the transistor 848 in the channel length direction of the display device. The transistor 848 corresponds to the cross section taken along the dashed line X1-X2 in FIG. FIG. 38D shows a cross-sectional view of the transistor 848 in the channel width direction of the display device of one embodiment of the present invention. 38B. A transistor 848 shown in FIG. 38D is a cross-sectional view of the transistor 848 shown in FIG. This corresponds to the cross section between the chain lines Y1 and Y2.

[0454] The transistor 848 is a type of top-gate transistor having a back gate. .

[0455] In the transistor 848, the semiconductor layer 742 is formed on a protrusion provided in an insulating layer 772. By providing the semiconductor layer 742 on the protrusions provided in the insulating layer 772, the semiconductor layer 74 The second side of the transistor 848 can also be covered by the gate 743. The semiconductor layer 742 can be electrically surrounded by the electric field of the semiconductor layer 743. In this way, the electric field of the conductive film electrically attracts the semiconductor film in which the channel is formed. The structure of the surrounding transistor is called the surrounded channel (s-channel A transistor with an s-channel structure is called an "s-cha" structure. It is also called an "s-channel transistor" or "s-channel transistor."

[0456] In the s-channel structure, a channel is formed in the entire (bulk) of the semiconductor layer 742. The s-channel structure allows the drain current of the transistor to be increased. Furthermore, the electric field of the gate 743 can As a result, the entire channel formation region formed in the semiconductor layer 742 can be depleted. Therefore, in the s-channel structure, the off-state current of the transistor can be further reduced. It is possible.

[0457] The back gate 723 is provided on the insulating layer 378 .

[0458] The conductive layer 744a provided over the insulating layer 729 is a gate insulating layer 311, an insulating layer 728, and a and an opening 747c formed in the insulating layer 729, which is electrically connected to the semiconductor layer 742. The conductive layer 744b provided over the insulating layer 729 is a gate insulating layer 311 and an insulating layer 312. The semiconductor layer 742 and the electrode 747 are electrically connected through an opening 747d formed in the insulating layer 729 and the insulating layer 728. are electrically connected.

[0459] The gate 743 provided on the gate insulating layer 311 is connected to the gate insulating layer 311 and the insulating layer 77. 2, the back gate 723 is electrically connected to the opening 747a and the opening 747b. Therefore, the same potential is supplied to the gate 743 and the back gate 723. In addition, it is not necessary to provide either the opening 747a or the opening 747b. It is not necessary to provide both the opening 747a and the opening 747b. When neither of the back gate 723 and the gate 743 is provided, different potentials are applied to the back gate 723 and the gate 743. It is possible.

[0460] As a semiconductor used for a transistor having an s-channel structure, an oxide semiconductor Conductor, or polycrystalline silicon, or single crystal silicon transferred from a single crystal silicon substrate, etc. Examples include silicon such as kon.

[0461] <Configuration Example 6> The touch panel shown in FIG. 39 is a touch panel that connects a bottom emission type display panel and an input device. This is an example of bonding with adhesive layer 396.

[0462] The display panel in FIG. 39 differs from the configuration in FIG. 35(A) in that it has an insulating layer 376. 39 does not have an insulating layer 393, and the electrodes 331 are directly formed on the flexible substrate 330. 38 in that electrodes 332 and the like are provided.

[0463] <Configuration Example 7> The touch panel shown in FIG. 40 comprises a display panel to which a color-coded display method is applied and an input device. This is an example of bonding with an adhesive layer 375.

[0464] The display panel in FIG. 40 has the same configuration as that in FIG. 35(B).

[0465] The input device of FIG. 40 has an insulating layer 376 on a flexible substrate 392, and an electrode The electrodes 334 and the wiring 342 are covered with an insulating layer 395. The insulating layer 395 has an electrode 332 and an electrode 333 on it. It is bonded to the flexible substrate 392 by an adhesive layer 396 .

[0466] <Configuration Example 8> FIG. 41 shows a touch panel between a pair of flexible substrates (flexible substrate 371 and flexible substrate 372). This is an example having a sensor and a light emitting element 304. By using two flexible substrates, This makes it possible to make the panel thinner, lighter, and more flexible.

[0467] The structure of FIG. 41 is a structure in which a peeled layer is formed on a fabrication substrate 411 in the fabrication method example of the structure example 1. In the example of the manufacturing method of the configuration example 1, the substrate 4 As the layers to be peeled off on the substrate 11, an insulating layer 376, a colored layer 325, and a light-shielding layer 326 were formed ( Figure 32(B)).

[0468] When fabricating the structure shown in FIG. 41, after forming the insulating layer 376, an electrode 332, an electrode 333, and a wiring 342 are formed. Next, an insulating layer 395 is formed to cover these electrodes. Next, an electrode 334 is formed on the insulating layer 395. Next, an insulating film covering the electrode 334 is formed. An edge layer 327 is formed. Then, a coloring layer 325 and a light-shielding layer 326 are formed on the insulating layer 327. Then, the substrates are bonded to the fabrication substrate 401, and the fabrication substrates are peeled off, and a flexible substrate is bonded. By combining these, a touch panel with the configuration shown in FIG. 41 can be produced.

[0469] <Configuration Example 9> 42(A) and (B) are schematic perspective views of the touch panel 320. FIG.

[0470] The touch panel 320 has a visible light transmitting area 110. 10 is disposed adjacent to the display unit 381 and along two sides of the display unit 381.

[0471] In FIGS. 42A and 42B, the input device 318 is a flexible substrate of the display panel 379. The wiring 341 and wiring 342 of the input device 318 are provided on the surface 372. The display panel 379 is electrically connected to the FPC 350 provided thereon.

[0472] By adopting such a configuration, the FPC connected to the touch panel 320 is located on one of the substrate sides ( In this case, it can be arranged only on the flexible substrate 371 side. The figure shows a configuration in which two FPCs are attached to the touch panel 320. The touch panel 320 has multiple The present invention is not limited to a configuration in which multiple FPCs are attached. If the FPC is configured to supply signals to both the display panel 379 and the input device 318, , the configuration can be further simplified.

[0473] The IC 374 has a function of driving the display panel 379. The IC 351 is an input device 318. It has the function of driving the

[0474] 43 shows an example of a cross-sectional view of the touch panel 320. In FIG. 43, a display unit 381, a driving The area including the circuit portion 382, ​​the connection portion 385, the area 110 that transmits visible light, and the FPC 373 Furthermore, in FIG. 43, the same conductive layer as the gate of the transistor is applied. The wiring formed by this process and the same conductive layer as the source and drain of the transistor are processed. The cross-sectional structure of an intersection 387 where the formed wiring intersects is shown.

[0475] The connection portion 385 is connected to one of the wirings 342 (or wirings 341) and one of the conductive layers 307. Electrical connection is made via connector 386.

[0476] The connector 386 may be, for example, a conductive particle. The surface of particles of organic resin or silica coated with a metal material can be used. It is preferable to use nickel or gold as the metal material because it can reduce the contact resistance. It uses particles coated with layers of two or more metal materials, such as nickel coated with gold. It is preferable that the connector 386 is made of a material that is elastically or plastically deformable. At this time, the conductive particles are preferably crushed in the vertical direction as shown in FIG. This may result in a connection between the connector 386 and the conductive layer electrically connected thereto. The increased contact area reduces contact resistance and prevents problems such as poor connections. .

[0477] The connector 386 is preferably disposed so as to be covered with the adhesive layer 317. For example, the adhesive layer 3 After applying the paste or the like that will become 17, the connector 386 may be sprayed onto the connecting portion 385. By disposing the connection portion 385 in the portion where the adhesive layer 317 is to be provided, the adhesive layer 3 17 on the light emitting element 304 (also called a solid sealing structure), A hollow sealed light emitting panel or a liquid crystal display panel, etc., is configured to use an adhesive layer 317 around the periphery. If so, it can be applied in the same way.

[0478] FIG. 43 shows an example in which the optical adjustment layer 324 does not cover the edge of the electrode 321. An example is shown in which the spacer 316 is also provided in the drive circuit section 382.

[0479] <Configuration Example 10> The touch panel shown in FIG. 44(A) includes electrodes constituting a touch sensor and a flexible substrate 37. 2, a light-shielding layer 326 is provided between the insulating layer 376 and the insulating layer 328. When viewed from the flexible substrate 372 side with the light-shielding layer 326 provided therebetween, the insulating layer 328 has the following structure: Conductive layers such as electrodes 332, electrodes 333, and wiring 342, an insulating layer 395 that covers these, and an insulating The electrode 334 and the insulating layer 395 are provided on the insulating layer 395. An insulating layer 327 is provided, and a coloring layer 325 is provided on the insulating layer 327 .

[0480] The insulating layer 327 and the insulating layer 328 function as planarization films. The insulating layer 328 may not be provided if they are not necessary.

[0481] With this configuration, the flexible substrate 372 side is closer to the electrodes and the like that constitute the touch sensor. The light-shielding layer 326 provided on the electrode prevents the electrode from being visible to the user. Therefore, not only is the thickness thin, but the display quality is also improved. It is possible to realize a channel.

[0482] As shown in FIG. 44(B), the touch panel has an insulating layer 376 and an insulating layer 328. The light-shielding layer 326a is provided, and the light-shielding layer 326b is provided between the insulating layer 327 and the adhesive layer 317. By providing the light-shielding layer 326b, light leakage can be more reliably suppressed. do.

[0483] This embodiment mode can be combined with other embodiment modes as appropriate.

[0484] (Embodiment 3) In this embodiment, electronic devices and lighting devices according to one embodiment of the present invention will be described with reference to drawings. .

[0485] Examples of electronic devices include television sets, computer monitors, digital Cameras, digital video cameras, digital photo frames, mobile phones (mobile phones, mobile (also called telephone equipment), portable game machines, personal digital assistants, sound reproduction devices, pachinko machines, etc. Examples include large game consoles.

[0486] Furthermore, since the electronic device or the lighting device of one embodiment of the present invention is flexible, it can be easily installed in a house or a building. It can also be incorporated into the interior or exterior walls of a vehicle, or along the curved surfaces of the interior or exterior of a vehicle. It is Noh.

[0487] Furthermore, the electronic device of one embodiment of the present invention may include a secondary battery and may be configured to use wireless power transmission. It is preferable that the secondary battery can be charged.

[0488] As the secondary battery, for example, a lithium polymer battery (lithium ion battery) using a gel electrolyte is used. Lithium-ion secondary batteries such as lithium polymer batteries, nickel-metal hydride batteries, nickel-cadmium batteries, organic Examples include nickel-zinc batteries, lead-acid batteries, air secondary batteries, nickel-zinc batteries, and silver-zinc batteries. .

[0489] The electronic device according to one embodiment of the present invention may include an antenna. By doing so, it is possible to display images or information on the display unit. If the device has a secondary battery, the antenna may be used for contactless power transmission.

[0490] In a display device according to one embodiment of the present invention, the area of ​​a display region is increased by increasing the number of display panels. Therefore, the display device of one embodiment of the present invention can be made digital. The display device according to one embodiment of the present invention can be suitably used for signage, PID, etc. The display area can be shaped in various ways by changing the layout of the display panel. can.

[0491] In FIG. 45(A), a display device 10 according to one embodiment of the present invention is applied to a pillar 15 and a wall 16. As the display panel used in the display device 10, a flexible display panel is used. By using a panel, it is possible to install the display device 10 along a curved surface.

[0492] Here, particularly when the display device according to one aspect of the present invention is used for digital signage or PID, By applying a touch panel to the display panel, images or videos can be displayed in the display area. Furthermore, it is preferable because it allows the viewer to intuitively operate the device. When used to provide information such as traffic information, the user can operate the device intuitively. In addition, when installing on the wall of a building or public facility, In this case, the display panel does not need to be a touch panel.

[0493] 45(B) to (E) show examples of electronic devices having a curved display unit 7000. The display surface of the unit 7000 is curved, and the display can be performed along the curved display surface. The display unit 7000 may be flexible.

[0494] The display portion 7000 included in each of the electronic devices shown in FIGS. 45B to 45E is a display screen according to one embodiment of the present invention. It is produced using the equipment shown.

[0495] An example of a mobile phone is shown in FIG. 45B. The mobile phone 7100 includes a housing 7101, a display unit 7000, operation button 7103, external connection port 7104, speaker 7105, microphone 7 It has 106 etc.

[0496] A mobile phone 7100 shown in FIG. 45B includes a touch sensor in the display portion 7000. All operations, such as making a call or entering text, can be performed using a finger or stylus. This can be done by touching the part 7000.

[0497] In addition, by operating the operation button 7103, the power can be turned on or off, or the display unit 7000 For example, from the email creation screen, you can change the type of image displayed. You can switch to the main menu screen.

[0498] FIG. 45C shows an example of a television device. The television device 7200 includes a housing 72 The display unit 7000 is built into the housing 72. This shows a configuration that supports 01.

[0499] The television device 7200 shown in FIG. 45C is operated by an operation switch provided in the housing 7201. This can be done by a separate remote control 7211 or the display unit 70. The display unit 7000 may be provided with a touch sensor, and the operation can be performed by touching the display unit 7000 with a finger or the like. The remote control operation device 7211 may display information to be output from the remote control operation device 7211. The remote control 7211 may have a display unit that displays the operation keys or touch panel. The panel allows the user to operate the channel or volume, and the information displayed on the display unit 7000 You can control the video.

[0500] The television device 7200 includes a receiver, a modem, and the like. It is possible to receive general television broadcasts by using a modem. By connecting to a communication network, it can be one-way (sender to receiver) or two-way. It is also possible to communicate information (between a sender and a receiver, or between receivers).

[0501] An example of a portable information terminal is shown in FIG. 45D. The portable information terminal 7300 includes a housing 7301 and It has a display unit 7000. It also has operation buttons, an external connection port, a speaker, a microphone, and an The display unit 7000 may include an antenna, a battery, etc. The display unit 7000 is provided with a touch sensor. The mobile information terminal 7300 is operated by touching the display unit 7000 with a finger or a stylus. This can be done.

[0502] FIG. 45(D) is a perspective view of the portable information terminal 7300, and FIG. 45(E) is a perspective view of the portable information terminal 7300. 300 is a top view.

[0503] The portable information terminal exemplified in this embodiment may be, for example, a telephone, a notebook, an information viewing device, or the like. It has one or more selected functions. Specifically, it can be used as a smartphone. The portable information terminal exemplified in this embodiment is, for example, a mobile phone, an electronic mail various functions such as browsing and creating documents, playing music, internet communication, and computer games The application can be executed.

[0504] The mobile information terminal 7300 can display text or images on multiple surfaces. As shown in FIG. 45(D), three operation buttons 7302 are displayed on one side and are indicated by rectangles. The information 7303 can be displayed on another surface. This example shows information displayed on the top side of the mobile terminal. Information may also be displayed on three or more surfaces of the mobile information terminal.

[0505] Examples of such information include notifications from social networking services (SNS), Display notifying the arrival of an email or phone call, the subject of the email, or the sender's name , date and time, remaining battery power, antenna reception strength, etc. Instead of information, operation buttons, icons, etc. may be displayed at the position where the information is displayed.

[0506] For example, the user of the mobile information terminal 7300 may carry the mobile information terminal 7300 in the breast pocket of his / her clothes. When it is stored, the display (information 7303 in this example) can be confirmed.

[0507] Specifically, the telephone number or name of the caller of the incoming call is displayed on the mobile information terminal 7300. The user takes the mobile information terminal 7300 out of his pocket and You can check the display and decide whether to answer the call without having to pick up the phone.

[0508] FIG. 45(F) shows an example of a lighting device having a curved light-emitting portion.

[0509] The light-emitting portion of the lighting device shown in FIG. 45F is manufactured using the display device of one embodiment of the present invention. will be done.

[0510] The lighting device 7400 shown in FIG. 45(F) includes a light-emitting unit 7402 having a wavy light-emitting surface. This makes it a highly designed lighting device.

[0511] Furthermore, each light-emitting unit included in the lighting device 7400 may be flexible. It is fixed with a plastic member or a movable frame, and the light-emitting surface of the light-emitting part can be adjusted automatically according to the application. Alternatively, the structure may be configured to be freely bendable.

[0512] The lighting device 7400 includes a base 7401 having an operation switch 7403 and a It has a light-emitting part that is held by the

[0513] Here, the illumination device in which the light emitting unit is supported by the base is exemplified. The housing can be fixed to the ceiling or can be hung from the ceiling. The surface can be curved, so the light-emitting surface can be curved concavely to brighten a specific area. It can also be used to illuminate a room, or the light-emitting surface can be curved convexly to brightly illuminate an entire room.

[0514] 46(A1), (A2), (B) to (I) show a display device having a flexible display unit 7001. 1 shows an example of a portable information terminal.

[0515] The display portion 7001 is manufactured using a display device of one embodiment of the present invention. Applies a display device with a display panel that can be bent between 0.01mm and 150mm The display unit 7001 may be provided with a touch sensor, and the display unit 7001 can be operated by touching it with a finger or the like. You can operate the mobile information terminal by touching 1.

[0516] FIG. 46(A1) is a perspective view showing an example of a portable information terminal, and FIG. 46(A2) is a perspective view showing an example of a portable information terminal. 7 is a side view showing an example of a mobile information terminal. 01, a drawer member 7502, an operation button 7503, etc.

[0517] The portable information terminal 7500 includes a flexible display unit 7 wound in a roll shape in a housing 7501. 001.

[0518] In addition, the mobile information terminal 7500 can receive video signals using a built-in control unit. The portable information terminal 7500 can display the image on the display unit 7001. The housing 7501 is equipped with a terminal for connecting a connector, A configuration may be adopted in which signals or power are supplied directly from the outside via wires.

[0519] In addition, the operation button 7503 can be used to turn the power on and off or to switch the image to be displayed. In addition, in Fig. 46 (A1), (A2), and (B), the mobile information terminal In this example, the operation button 7503 is arranged on the side of the mobile information terminal 7500. It may be placed on the same surface (front surface) as the display surface of the terminal 7500 or on the back surface.

[0520] FIG. 46(B) shows the portable information terminal 7500 with the display unit 7001 pulled out. In this state, an image can be displayed on the display unit 7001. The display unit 7001 can be pulled out using the material 7502. 46(A1) in which the display unit 7001 is pulled out, and FIG. 46(B) in which the display unit 7001 is pulled out. For example, the portable information terminal 7500 may display differently. In this state, the rolled-up portion of the display unit 7001 is hidden, so that the mobile information The power consumption of the terminal 7500 can be reduced.

[0521] The display unit 7001 is fixed so that the display surface of the display unit 7001 is flat when the display unit 7001 is pulled out. To secure the display unit 7001 in place, a reinforcing frame may be provided on the side of the display unit 7001.

[0522] In addition to this configuration, a speaker is provided on the housing, and the sound is transmitted by the audio signal received together with the video signal. The audio may be output by the audio input.

[0523] An example of a foldable mobile information terminal is shown in Fig. 46(C) to (E). In Figure 46(D), the state is changed from either the unfolded state or the folded state to the other. In FIG. 46(E), the mobile information terminal 7600 is in a folded state. The portable information terminal 7600 is highly portable when folded and is easy to carry when unfolded. The seamless, large display area provides excellent visibility.

[0524] The display unit 7001 is supported by three housings 7601 connected by hinges 7602. The two housings 7601 are bent via the hinge 7602, and the portable information terminal The 7600 can be reversibly transformed from an unfolded state to a folded state.

[0525] Figures 46(F) and (G) show an example of a foldable mobile information terminal. 46(G) shows the state where the display unit 7001 is folded inward. The mobile information terminal 7650 is folded so that the 001 is facing outward. The mobile information terminal 7650 has a display portion 7001 and a non-display portion 7651. When not in use, the display unit 7001 can be folded inward. Staining or scratches can be prevented.

[0526] An example of a flexible portable information terminal is shown in FIG. 46(H). The portable information terminal 7700 is The device has a housing 7701 and a display portion 7001. It also has a button 7703a as an input means, 7703b, speakers 7704a and 7704b as audio output means, and an external connection port 77 05, a microphone 7706, etc. The portable information terminal 7700 may be flexible. The battery 7709 may be mounted on the display unit 70. It may be placed on top of 01.

[0527] The housing 7701, the display portion 7001, and the battery 7709 are flexible. The portable information terminal 7700 can be bent into a desired shape or twisted. For example, the display portion 7001 of the portable information terminal 7700 is It can be folded outward and used. In this way, the housing 7701 and the display unit 700 can be used in a rolled-up state. Since the portable information terminal 7700 can be freely deformed, it can be easily carried out even if it is dropped or has the advantage that it is less likely to break even if an unintended external force is applied.

[0528] In addition, since the portable information terminal 7700 is lightweight, the upper part of the housing 7701 can be held with a clip or the like. Or, the housing 7701 can be fixed to the wall with a magnet or the like. It can be conveniently used in a variety of situations.

[0529] FIG. 46(I) shows an example of a wristwatch-type portable information terminal. The portable information terminal 7800 has a band. 7801, a display unit 7001, an input / output terminal 7802, an operation button 7803, etc. The housing 7801 functions as a housing. The battery 7805 can be mounted on the display unit 700. 1 or may be arranged overlapping with band 7801.

[0530] The band 7801, the display portion 7001, and the battery 7805 are flexible. The portable information terminal 7800 can be easily bent into a desired shape.

[0531] The operation button 7803 is used to set the time, turn the power on and off, and turn wireless communication on and off. It has various functions such as operation, silent mode activation and deactivation, power saving mode activation and deactivation, etc. For example, an operating system installed in the portable information terminal 7800 can The function of the operation button 7803 can also be freely set using the stem.

[0532] In addition, by touching an icon 7804 displayed on the display unit 7001 with a finger or the like, the application You can launch the application.

[0533] In addition, the mobile information terminal 7800 is capable of performing standardized short-range wireless communication. For example, by communicating with a wireless headset, hands-free operation is possible. You can also make calls.

[0534] The portable information terminal 7800 may also have an input / output terminal 7802. If you have 02, you can exchange data directly with other information terminals via a connector. Charging can also be performed via the input / output terminal 7802. The charging operation of the mobile information terminal shown in the example is performed by non-contact power transmission without using input / output terminals. It is also possible.

[0535] A display device according to one embodiment of the present invention has characteristics of being flexible, thin, and lightweight. Therefore, a device 81 shown in Figs. 47(A) to (C) is used by attaching it to clothing. It is possible.

[0536] The position where the device 81 is attached is not particularly limited, and may be, for example, the front body, the back body, or the collar. , sleeves, or a hood.

[0537] There are no restrictions on the type of clothing to which it can be attached, for example, tops such as shirts and blouses, pants, skirts, etc. Examples include bottoms such as a jacket, a dress, or a jumpsuit. Scarves or ties It may also be attached to the like.

[0538] Figure 47(A) shows the front of a shirt, Figure 47(B) shows the front of a polo shirt, Figure 47(C) ) shows an example in which devices 81 are attached to the collar and sleeve of a shirt.

[0539] The device 81 may be removably attached to clothing. For example, the device may be removed by washing. If the chair 81 is likely to be damaged, it is preferable that it be removable from the clothing.

[0540] This embodiment mode can be combined with other embodiment modes as appropriate. [Explanation of symbols]

[0541] 10 Display device 12 Display device 13 Display area 15 pillars 16 Wall 31 Light-emitting element 36 pixel electrode 38 Common electrode 40 Light-emitting element 41 Display area 49 Display area 51 Signal line 52 scan lines 55 Power line 70a Select transistor 70b Drive transistor 70b1 drive transistor 70b2 drive transistor 70c drive transistor 72a Semiconductor layer 72b1 Semiconductor layer 72b2 Semiconductor layer 74b Conductive layer 76 Conductive Layer Gate 77 80 pixel circuit 81 devices 83a Luminous area 83b Light-emitting area 85 Capacitor element 100 Display Panel 100a Display panel 100b Display panel 100c display panel 100d display panel 101 Display area 101a Display area 101b Display area 101c display area 101d Display area 102 areas 102a area 102b area 103 Translucent layer 109 Display area 109a Display area 109b Display area 110 areas 110a area 110b area 110c area 110d area 112a FPC 112b FPC 115b IC 120 areas 120a area 120b area 131 Resin layer 132 Protection Board 133 Resin layer 134 Protection Board 141 pixels 141a pixel 141b pixels 141c pixels 141d pixels 142a wiring 142b wiring 145 Wiring 149 pixels 149a pixels 154 Adhesive layer 300 touch panel 301 Transistor 302 Transistor 303 Transistor 304 Light-emitting element 305 Capacitor 306 Connection 307 Conductive Layer 308 Connection 309 Connections 310 Input Device 311 Gate insulating layer 312 Insulating layer 313 Insulating Layer 314 Insulating Layer 315 Insulation Layer 316 Spacer 317 Adhesive layer 318 Input Device 319 Connections 320 Touch Panel 321 Electrode 322 EL layer 323 Electrode 324 Optical adjustment layer 325 Colored layer 326 Light blocking layer 326a Light blocking layer 326b Light blocking layer 327 Insulating Layer 328 Insulating Layer 329 Overcoat 330 Flexible substrate 331 Electrode 332 Electrode 333 Electrode 334 Electrode 341 Wiring 342 Wiring 347 areas 348 areas 349 areas 350 FPC 351 IC 355 Conductive Layer 370 Display Panel 371 Flexible substrate 372 Flexible substrate 373 FPC 374 IC 375 Adhesive layer 376 Insulating Layer 377 Adhesive layer 378 Insulating Layer 379 Display Panel 381 Display section 382 Drive circuit section 383 Wiring 385 Connection 386 Connectors 387 Intersection 391 Adhesive layer 392 Flexible substrate 393 Insulating Layer 395 Insulating Layer 396 Adhesive layer 401 Fabricated substrate 403 Peeling layer 411 Fabrication substrate 413 Peeling layer 723 Back Gate 728 Insulation Layer 729 Insulation Layer 742 Semiconductor layer Gate 743 744a conductive layer 744b Conductive layer 747a aperture 747b aperture 747c aperture 747d aperture 772 Insulation Layer 848 transistors 7000 Display 7001 Display section 7100 Mobile Phone 7101 Housing 7103 Operation button 7104 External connection port 7105 Speaker 7106 Microphone 7200 Television Equipment 7201 Case 7203 Stand 7211 Remote control device 7300 Mobile Information Terminal 7301 Housing 7302 Operation button 7303 Information 7400 Lighting Equipment 7401 Daibu 7402 Light-emitting part 7403 Operation switch 7500 Mobile Information Terminal 7501 Case 7502 Drawer parts 7503 Operation button 7600 Personal Digital Assistant 7601 Case 7602 Hinge 7650 Personal Digital Assistant 7651 Hidden part 7700 Personal Digital Assistant 7701 Housing 7703a Button 7703b Button 7704a Speaker 7704b Speaker 7705 External connection port 7706 Mike 7709 Battery 7800 Mobile Information Terminal 7801 band 7802 Input / output terminal 7803 Operation button 7804 Icons 7805 Battery

Claims

[Claim 1] a first display panel and a second display panel; the first display panel has a first display area and an area that transmits visible light; the second display panel has a second display area, a third display area, and an area that blocks visible light; the first display region is adjacent to the region that transmits visible light, the third display region is located between the second display region and the region that blocks visible light, and is adjacent to the second display region and the region that blocks visible light; the second display area overlaps with the visible light transmitting area on the display surface side, the visible light blocking region overlaps with the first display region; at least one of the first display area and the area that transmits visible light overlaps with the third display area; the second display area has a plurality of pixels arranged in m rows and n columns (m and n are each independently an integer of 2 or greater), the third display region has a plurality of pixels arranged in a column direction, the third display area is adjacent to pixels in an n-th column of the second display area, A display device, wherein the gate signal and source signal supplied to the pixel in the i-th row (i is an integer greater than or equal to 1 and less than or equal to m) of the third display area are equal to the gate signal and source signal supplied to the pixel in the i-th row and n-th column of the second display area.

Images