Display device

Abstract

To provide a display device or a display system capable of displaying images along a curved surface, provide a display device or a display system capable of displaying images seamlessly in the form of a ring, and provide display devices or display systems suitable for larger sizes.SOLUTION: A display device includes a display panel. The display panel includes a first part and a second part and is flexible. The first part can display images. The second part can transmit visible light. The display panel is curved so that the second part and the first part overlap with each other.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] One aspect of the present invention relates to a display device that displays an image.

[0002] Note that one embodiment of the present invention is not limited to the above technical fields. The technical field of one embodiment is a semiconductor device, a display device, a light-emitting device, a lighting device, a power storage device, a storage device, a recording device, a display device, a display device, a lighting device, a power storage device, a storage device, a recording medium, a display device, a display device, a light-emitting device, a lighting device, a power storage device, a storage device, a recording medium, a display ... display device, a light-emitting device, a lighting device, a power storage Examples of the present invention include a memory device, a method for driving the memory device, or a method for manufacturing the memory device. do. [Background technology]

[0003] In recent years, there has been a demand for larger and more diverse display devices. (also called television or television receiver), digital signage Signage: Electronic signage, PID (Public Information In addition, in the case of digital signage and PID, The larger the size, the more information can be provided. The larger the shape, the more likely it is to catch people's attention, which is expected to increase the advertising effectiveness.

[0004] A typical display device is an organic EL (Electro Luminescence ) elements and light-emitting diodes (LEDs) Light-emitting devices with optical elements, liquid crystal display devices, electronic paper that displays using electrophoresis, etc. - and others.

[0005] For example, the basic structure of an organic EL element is a layer containing a light-emitting organic compound between a pair of electrodes. By applying a voltage to this element, light is emitted from the light-emitting organic compound. A display device using such an organic EL element is thin and lightweight. This makes it possible to realize a display device with high contrast and low power consumption.

[0006] Patent Document 1 discloses a flexible light-emitting device that uses an organic EL element. . [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-197522 Summary of the Invention [Problem to be solved by the invention]

[0008] One aspect of the present invention provides a display device or a display system capable of displaying images along a curved surface. Another object of the present invention is to provide a display device or a display device capable of displaying a seamless circular image. Another object of the present invention is to provide a display system suitable for large-scale display. One of the objectives is to provide a display system that is easy to see and advertise. It is an object of the present invention to provide a highly effective display device or display system. An object of the present invention is to provide a display device or a display system that is easy to maintain and manage. Another object is to provide a display system with high power supply efficiency. One object is to provide a display device, a display unit, a display system, and the like.

[0009] The description of these problems does not preclude the existence of other problems. It is not necessary to solve all of these problems. It is possible to extract this information from the detailed description, etc. [Means for solving the problem]

[0010] One embodiment of the present invention is a display device having a display panel. The display panel includes a first portion and a second portion. The first portion has a function of displaying an image, and the second portion has a function of displaying an image. The second portion has a function of transmitting visible light. and the first portion are bent so as to overlap each other.

[0011] Another aspect of the present invention is a display device having a first display panel and a second display panel. The first display panel and the second display panel each have a first portion and a second portion. The first part has a function of displaying an image. The first display panel and the second display panel have a function of transmitting visible light. At least one of the panels is bent so that they partially overlap each other. a first portion of the first display panel and a second portion of the second display panel have an overlapping area, The first portion of the display panel and the second portion of the first display panel overlap each other. Has.

[0012] Another aspect of the present invention is a display device having first to n-th (n is an integer of 2 or more) display panels. The first to n-th display panels each have a first portion and a second portion. The first portion has a function of displaying an image, and the second portion has a function of displaying an image. The second portion has a function of transmitting visible light. The two display panels are bent so that they overlap each other. a first portion of the display panel of the (k+1)th display panel (an integer less than or equal to k) and a second portion of the display panel of the (k+1)th display panel are alternately a first portion of the nth display panel and a second portion of the first display panel, the first portion of the nth display panel and the second portion of the first display panel having overlapping areas. The portions have an overlapping area.

[0013] Another aspect of the present invention is a display unit including a display panel and a support. The display panel has a first portion and a second portion, and is flexible. The first portion has a function of displaying an image, and the second portion has a function of transmitting visible light. The holder has a first surface having a curved surface and an attachment mechanism on the opposite side to the first surface. The mounting mechanism has a function of fixing the support to the frame. The second portion of the display panel is fixed along the surface of the support. It has a part.

[0014] The display unit preferably includes a power receiving device. The device includes a power resonant coil, a power receiving coil, a rectifier circuit, a DC-DC converter, and a battery. In the receiving resonant coil, a high frequency voltage is induced by magnetic field resonance. A high frequency voltage is induced by electromagnetic induction with the receiving resonant coil. The DC-DC converter rectifies the high frequency voltage induced in the coil. DC voltage is input. The battery uses the DC voltage output by the DC-DC converter. Furthermore, the DC-DC converter has an input power detection section and a voltage conversion section. The input power detection unit receives a first DC voltage, and the voltage conversion unit converts the first DC voltage into a It is preferable that the input power detection unit converts the input power into a second DC voltage and outputs the second DC voltage. The first means generates a first voltage proportional to the first DC voltage, and a second means generates a second voltage proportional to the first DC voltage. The second means detects a second voltage proportional to the current across the load. The unit includes a switch and a third means. The switch generates a current across the load in response to switching. The third means controls the current flowing through the switch based on the first voltage and the second voltage. By controlling the switching, the ratio between the first voltage and the second voltage is kept constant.

[0015] In addition, the display unit uses FPC (Flexible Printed Circuit) The display panel preferably includes a first driving circuit and a driving device. The driving device is fixed to a portion of the support body excluding the first surface, and The driving device and the display panel are preferably electrically connected via an FPC.

[0016] Another aspect of the present invention is a display system having n display units, The robot has a frame and an output device. The frame has a circular arm and a leg that supports the arm. The output device has a function of outputting a second signal to the display unit. The first to nth display units can be attached to the arms by means of attachment mechanisms. When the unit is attached to the arm, the kth (k is an integer between 1 and n-1) display unit a first portion of the display panel of the (k+1)th display unit and a second portion of the display panel of the (k+1)th display unit; a first portion of the display panel of the nth display unit and a first display panel of the nth display unit, the first portion of the display panel of the nth display unit having an overlapping area with each other; Preferably, the second portion of the display panel of the unit has an overlapping area.

[0017] In the above display system, the frame is fitted with a mounting mechanism of the display unit. It is preferable that the frame has a plurality of projections or recesses. It is preferable that the ring has a mechanism for transforming between a closed state and a partially open state.

[0018] In the display system, the output device wirelessly outputs a second signal to the display unit. It is preferable that the ion exchange membrane has a function of exerting a force.

[0019] The output device has a terminal to which a storage device or an external storage device can be connected. It is also preferable that the output device has a function of acquiring information via a network. is preferred. [Effects of the Invention]

[0020] According to one aspect of the present invention, there is provided a display device or a display system capable of displaying images along a curved surface. Alternatively, a display device or a display system capable of seamless circular display can be provided. Alternatively, a display device or a display system suitable for large size can be provided. can provide a display device or a display system that is eye-catching and has a high advertising effect. Alternatively, it is possible to provide a display device or a display system that is easy to maintain and manage. This makes it possible to provide a display system with high power supply efficiency. , display systems, etc. [Brief explanation of the drawings]

[0021] [Figure 1] 1 shows an example of the configuration of a display panel and a display device according to an embodiment. [Figure 2] 1 shows a configuration example of a display device according to an embodiment. [Figure 3]1 shows a configuration example of a display device according to an embodiment. [Figure 4] 1 shows a configuration example of a display device according to an embodiment. [Figure 5] 3 shows an example of the configuration of a display unit according to an embodiment. [Figure 6] 3 shows an example of the configuration of a display unit according to an embodiment. [Figure 7] 1 shows an example of the configuration of a display system according to an embodiment. [Figure 8] 10 shows an example of a frame configuration according to an embodiment. [Figure 9] 1 shows an example of the configuration of a display system according to an embodiment. [Figure 10] 1 shows an example of the configuration of a display system according to an embodiment. [Figure 11] 1 shows an example of the configuration of a display system according to an embodiment. [Figure 12] 1 shows an example of the configuration of a display system according to an embodiment. [Figure 13] 1 shows an example of the configuration of a display system according to an embodiment. [Figure 14] 1 shows an example of the configuration of a display system according to an embodiment. [Figure 15] 1 shows a configuration example of a display device according to an embodiment. [Figure 16] 1 shows a configuration example of a display device according to an embodiment. [Figure 17] 1 shows a configuration example of a display device according to an embodiment. [Figure 18] 1 shows a configuration example of a display device according to an embodiment. [Figure 19] 1 shows a configuration example of a display device according to an embodiment. [Figure 20] 1 shows an example of the configuration of a display panel according to an embodiment. [Figure 21] 1 shows an example of the configuration of a display panel according to an embodiment. [Figure 22] 3A to 3C are diagrams illustrating the positional relationship of display panels according to an embodiment. [Figure 23] 1 shows an example of the configuration of a display panel according to an embodiment. [Figure 24] 1 shows an example of the configuration of a display panel according to an embodiment. [Figure 25]1 shows a configuration example of a display device according to an embodiment. [Figure 26] 1 shows an example of the configuration of a touch panel according to an embodiment. [Figure 27] 1 shows an example of the configuration of a touch panel according to an embodiment. [Figure 28] 1 shows an example of the configuration of a touch panel according to an embodiment. [Figure 29] 1 shows an example of the configuration of a touch panel according to an embodiment. [Figure 30] 1 shows an example of the configuration of a touch panel according to an embodiment. [Figure 31] 1 shows an example of the configuration of a touch panel according to an embodiment. [Figure 32] 1 shows an example of the configuration of a touch panel according to an embodiment. [Figure 33] 1 shows an example of the configuration of a touch panel according to an embodiment. [Figure 34] 1 shows an example of the configuration of a power supply system and a power receiving device according to an embodiment. [Figure 35] 1 shows an example of the configuration of a DC-DC converter according to an embodiment. [Figure 36] 1 shows an example of the configuration of a DC-DC converter according to an embodiment. [Figure 37] 1 shows an example of the configuration of a DC-DC converter according to an embodiment. [Figure 38] 10 shows an application example of a display device according to an embodiment. [Figure 39] 10 shows an application example of a display device according to an embodiment. [Figure 40] 10 shows an application example of a display device according to an embodiment. [Figure 41] 1 is a photograph of a display device according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0022] 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 form and detail without departing from the spirit and scope of the present invention. Therefore, the present invention is based on the following embodiments. The present disclosure should not be construed as being limited to the contents of the preceding paragraph.

[0023] In the configuration of the invention described below, the same parts or parts having similar functions are The same reference numerals are used in common between different drawings, and repeated explanations thereof will be omitted. When referring to a function, the hatch pattern may be the same and no particular symbol may be assigned.

[0024] In each figure described in this specification, the size, layer thickness, or area of ​​each component is The figures may be exaggerated for clarity and are not necessarily limited to that scale. stomach.

[0025] In this specification, ordinal numbers such as "first" and "second" are used to avoid confusion of components. The number is not a numerical limitation.

[0026] In this specification, unless otherwise specified, "image" refers to a still image, a moving image, or a still image. This includes any image that can be displayed in the display area of ​​a display device, such as an image that includes moving images.

[0027] (Embodiment 1) In this embodiment, a display panel, a display device, a display unit, and a display device according to one embodiment of the present invention will be described. The system and the like will be described with reference to the drawings.

[0028] One aspect of the present invention is to arrange a plurality of display panels in one or more directions (for example, in a row or in a matrix). By arranging the display devices in a wide display area, a display device and a display system can be manufactured. can be done.

[0029] A display device and a display system having a wide display area are manufactured by using a plurality of display panels. In this case, one display panel does not need to be large. There is no need to enlarge the manufacturing equipment for this purpose, and space can be saved. It is possible to use a manufacturing device for display panels, and a new manufacturing device is required for larger display devices. This reduces manufacturing costs and allows for the display panel to be enlarged. This can suppress the decrease in yield that accompanies this.

[0030] When the display panels are the same size, a display device having one display panel and a display Compared with the conventional display system, the display device and the display system having multiple display panels have a larger display area. This has the advantage of being able to display a large amount of information at once.

[0031] However, conventional display panels have a non-display area surrounding the display area. For example, multiple display panels can be arranged and their output images can be combined to display a single image. When the images are displayed in a separate manner, the images appear to be separate to the user of the display device. .

[0032] By narrowing the non-display area of ​​each display panel (using a narrow-frame display panel), This can prevent the panel display from appearing separated, but it is difficult to completely eliminate the hidden area. It is difficult.

[0033] Furthermore, if the area of ​​the non-display area is small, the distance between the edge of the display panel and the elements within the display panel becomes If the display panel becomes too short, impurities may enter the display panel from outside, causing the element to deteriorate. There is.

[0034] In view of this, in a display device and a display system according to one embodiment of the present invention, a plurality of display panels are overlapped. Of the two overlapping display panels, at least the one located on the display surface side (upper side) The display panel has a region that transmits visible light adjacent to the display region. It transmits the display area of ​​the lower display panel and the visible light of the upper display panel. Therefore, the non-display area between the display areas of the two overlapping display panels is This reduces or even eliminates the need for a continuous viewing of the display panel from the user. A large-sized display device and display system with barely noticeable seams can be realized.

[0035] In one aspect of the present invention, at least one of the non-display areas of the upper display panel A part of the display panel is a region that transmits visible light and overlaps with the display region of the display panel located below. In one aspect of the present invention, the non-display area of ​​the lower display panel can be At least a part of the display panel overlaps with the display area of ​​the display panel located above and with the area that blocks visible light. For these parts, the frame of the display device can be narrowed (the area other than the display area can be reduced). Since this does not affect the size (miniaturization), there is no need to reduce the area.

[0036] If the area of ​​the non-display area 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 elements from being deteriorated by impurities entering the display panel from the outside. For example, when an organic EL element is used as a display element, the edge of the display panel and the organic EL element The longer the distance, the more impurities such as moisture and oxygen from outside the display panel will be able to reach the OLED element. In the display device according to one aspect of the present invention, the non-display area is Since a sufficient area can be secured, even if a display panel using an organic EL element or the like is used, the signal A highly reliable large-sized display device and display system can be realized.

[0037] In one embodiment of the present invention, a plurality of display panels are arranged in a line, and two adjacent display panels are arranged in a line. The display panels are arranged so that they overlap each other. The area where both are connected in a strip shape can be used as one display area. Similarly, the two display panels located at the edges are also arranged with parts overlapping each other. Some or all of the display panels are in a bent state. The area where each display area of ​​the panel is connected seamlessly in a cylindrical shape is used as a single display area. You can be there.

[0038] More specifically, for example, the following configuration can be adopted.

[0039] [Display panel configuration example] FIG. 1A shows a display device, a display unit, a display system, and the like according to one embodiment of the present invention. 1 is a schematic top view of a possible display panel 100. FIG.

[0040] The display panel 100 includes a substrate 111, a substrate 112, a display area 101, a driving circuit 102, and a wiring The wiring 103 and the FPC 104 are provided.

[0041] The substrate 111 and the substrate 112 are preferably flexible. 100 can be bent so that the display surface of the display area 101 is convex or concave. Alternatively, the substrates 111 and 112 may be curved substrates having rigidity. .

[0042] The display area 101 is an area where an image can be displayed. A plurality of pixels are disposed between the substrate 111 and the substrate 112.

[0043] The driving circuit 102 is a circuit for driving the pixels in the display area 101. Here, the drive circuit 102 is configured to be built on a substrate 111. However, the driving circuit 102 is not limited to this. Alternatively, a configuration may be adopted in which a chip is used and mounted on the substrate 111 or the FPC 104.

[0044] The FPC 104 is connected to the pixels of the display area 101 and the driving circuit 102 via the wiring 103 . It has the function of supplying signals supplied from the

[0045] The display panel 100 also includes a region 110 (hereinafter referred to as a region 110 ) that is adjacent to the display region 101 and transmits visible light. More specifically, the display area 101 has a contour line A region 110 that transmits visible light is provided along the display region. 101 is a rectangle, and the outline of the display area 101 is aligned along both the long and short sides. In this example, a region 110 that transmits visible light is provided. 2 and wiring 103 are arranged along one of the long sides and one of the short sides of the display area 101, and By adopting a configuration in which no transparent layer is disposed, the region 11 that transmits visible light adjacent to the display region 101 0 can be placed.

[0046] The visible light transmitting region 110 is located at a position where it is connected to the FPC 104, as shown in FIG. It is preferable that the display area 101 is disposed on the opposite side of the display area 101. As will be described later, the FPC 104 is positioned on the opposite side of the display surface of the display area 101. In addition, the display panel 100 can be bent.

[0047] Here, in the display panel 100, the driving circuit 102, the wiring 103, the FPC 104, etc. The area where the light blocking layer is provided is an area 120 (hereinafter also referred to as area 120) that blocks visible light. It can be said that these are made of a material having light-transmitting properties, and the area is transparent to visible light. When the visible light is transmitted through the region 110, it can be said to be a part of the region 110 that transmits the visible light.

[0048] In FIG. 1A, the substrate 112 is indicated by a broken line. The display area 101 is covered with the driving circuit 102, the wiring 103, and the area 110. The substrate 112 may be provided to cover a part or all of the FPC 104. The substrate is arranged to avoid the terminal portion to which the wiring 103 is connected. By using a plate 112 and arranging it so that the opening and the terminal portion overlap, the surface of the terminal portion is exposed. It may also be configured to output the signal.

[0049] [Display device configuration example 1] FIG. 1B shows a configuration example of a display device 30 having two display panels 100. FIG. 2(A) shows a schematic cross-sectional view taken along the cutting line A1-A2 in FIG. 1(B).

[0050] In the following, we will discuss the relationship between the display panels, the components included in the display panels, and In order to distinguish between components related to each display panel, an alphabetical character is added after the reference numeral. In addition, unless otherwise specified, the display device is equipped with multiple display panels. Even when describing a configuration that includes multiple display panels, the same items as those for each display panel or component are included. When explaining, the alphabet will be omitted.

[0051] The display device 30 has a display panel 100a and a display panel 100b, each of whose display surfaces faces outward. Therefore, the display device 30 faces the outside of the ring. You can then display the image.

[0052] The display panel 100a has a region 110a that transmits visible light and a region 120 that blocks visible light. The display panel 100b has a region 11a that transmits visible light and a display region 101b. 0b, a region 120b that blocks visible light, and a display region 101b. A part of the display area 110a is arranged to overlap the display surface side of the display area 101b. Therefore, the viewer can see the image displayed in the display area 101b through the area 110a. This can be done.

[0053] In addition, the FPC 104, which is a part of the region 120b that blocks visible light of the display panel 100b, b, wiring 103b, etc. are provided so as to be covered by the display area 101a of the display panel 100a. Therefore, the display device 30 has a display area 101a and a display area covered by the area 110a. The display area 101b is seamlessly connected to the display area 101a.

[0054] Similarly, a part of the region 110b of the display panel 100b that transmits visible light is The display panel 100a is arranged so as to overlap the display surface side of the display area 101a of the display panel 100a. The FPC 104a and wiring 103a of the display panel 100a are connected to the display area 101b of the display panel 100b. Therefore, the display device 30 has a display area 101b and an area The display area 101a covered by the display area 110b is seamlessly connected to the display area 101a.

[0055] In FIG. 1B, a display area 31 of the display device 30 is shown surrounded by a thick dashed line. In the area 31, the display area 101a and the display area 101b are arranged seamlessly in a ring shape. Therefore, it is possible to display a seamless circular image in the display area 31. By applying the display device 30 to a pillar or the like, a seamless display can be achieved regardless of the direction from which the pillar is viewed. can be seen by the observer.

[0056] The display device 30 according to one embodiment of the present invention has a display area 31 with a 360-degree periphery. Therefore, it is possible to display images that are not the same as the two adjacent display panels. The panel 100 is arranged so that the two display areas 101 are seamlessly connected as seen by the viewer. The two display panels 100 do not necessarily need to be in contact with each other. For this reason, the two display panels 100 do not necessarily need to be fixed together by adhesive or the like. do not have.

[0057] Therefore, in this specification, when the display panel is in a "ring-shaped" state, the display panel The bending of the cable causes the part including the edge of the display panel and the other edge of the display panel to bend. This includes a state in which the part including the display panel overlaps with or touches the part including the display panel. Even if there is a gap or other structure between the two overlapping parts of the panel, it will not form a ring. In addition, the state in which multiple display panels form a "ring" includes the state in which adjacent In two adjacent display panels, the part including the edge of one display panel and the part including the edge of the other display panel The part including the edge of the flannel has one or more overlapping areas or contact areas. In this case, there is a gap between the two overlapping portions of the two adjacent display panels. Even when there is a gap or other structure between them, this is considered to be a ring.

[0058] In addition, although FIG. 1B shows a case where two display panels 100 are used, three display panels may be used. The above display panel 100 can also be used. Therefore, the display area 31 of the display device 30 can be adjusted without changing the size or design of the display panel 100. It is possible to make the size (perimeter of the ring formed by the display area) as large as possible.

[0059] In FIG. 1C, the configuration in which two display panels 100 are arranged to form a ring is shown in the vertical direction. An example of two placements is shown.

[0060] Specifically, the display device 30 shown in FIG. 1C includes four display panels (display panels 100 a to 100d).

[0061] The display panel 100a and the display panel 100b, and the display panel 100c and the display panel 100d are The relative positional relationship of each of 00d is the same as in FIG. 1(B).

[0062] Furthermore, a part of the region 110a of the display panel 100a that transmits visible light is The display panel 100c is arranged so as to overlap the display surface side of the display area 101c. A part of the display area 101a of the display panel 100a is a visible light-shielding area 12 of the display panel 100c. 10c (not shown) so as to cover a part of the wiring 103c and the driving circuit 102c. It is provided.

[0063] Similarly, a part of the region 110b of the display panel 100b that transmits visible light is The display panel 100d is arranged so as to overlap the display surface side of the display area 101d. A part of the display area 101b of the display panel 100b is a visible light blocking area 12 of the display panel 100d. 10d (not shown) so as to cover a part of the wiring 103d and the driving circuit 102d. It is provided.

[0064] Therefore, the display area 31 of the display device 30 shown in FIG. 1C is divided into two vertically positioned Since the display area 101 is connected seamlessly, a seamless image can be displayed vertically. In addition, when the display device 30 is applied to a pillar or the like, it is possible to arrange the display device in the vertical direction. By increasing the number of panels 100, the display area 31 can be expanded without limit in the height direction of the pillar. This makes it possible to

[0065] Here, an example is shown in which the display area 31 of the display device 30 is cylindrical. The display area 31 may have various shapes, for example, a cross-sectional outline shape. However, they can take on a variety of shapes, including circles, ellipses, polygons, and polygons with rounded corners. Alternatively, the shape of the display area 31 may be a pyramidal shape such as a cone or a pyramid. The present invention is not limited to this, and can be applied to polyhedron shapes, polyhedron shapes with rounded corners, and the like.

[0066] For example, by applying the display device 30 to a pillar in a public facility, advertisements can be displayed in all directions. This makes it easier for people to see the advertisement, thereby increasing the effectiveness of the advertisement.

[0067] As a method for displaying an image on the surface of a pillar, for example, a curved 1 However, in this configuration, the area where an image is displayed is In addition, the display is limited to a specific orientation. When arranging the panels side by side along the surface of a pillar or other object, there is a joint between the two display panels. This causes discontinuities in the image.

[0068] Another method is to project an image onto the surface of the pillar using a projection-type video device such as a projector. However, this method requires 1 Multiple projectors are required for each pillar, and the distance between the projectors and the pillars is also large. A large space is required because the distance between the devices must be several meters (typically 2 to 5 meters or more). In addition, in the case of projection-type video equipment, if the surroundings are bright, the image may be blurred due to pillars. The contrast of the displayed image may be reduced due to the influence of reflected light from the The resolution will be reduced, and if there is an obstruction between the projector body and the pillar, the projector may be blocked by the pillar. There are also problems with the shape of the pillar surface and the relationship between the pillar and the projector. Depending on the position relative to the main unit, the image may be distorted.

[0069] However, the display device 30 according to one embodiment of the present invention can display an image by itself. This makes it ideal for installation in places with limited space, such as in ordinary homes. In addition, the image may be distorted and the contrast may be reduced depending on the ambient brightness. This essentially eliminates problems such as reduced resolution and shadows. It is possible to display images with extremely high display quality. Since it does not use a light source such as a lamp, it can reduce power consumption and there is no risk of heat generation. In addition, there is no need to replace the light source. It can be said that this is a display device that achieves both low manufacturing costs and high reliability.

[0070] The thickness of each display panel 100 is, for example, 10 μm or more and 5 mm or less, preferably 2 0 μm or more and 4 mm or less, more preferably 30 μm or more and 3 mm or less, typically 40 μm or less The thinner the display panel 100, the easier it is to mount the display device 3. On the other hand, if the thickness is too thin, the mechanical strength of the display panel 100 is reduced. In addition, for example, if the display panel 100 is provided with a flexible protective sheet, By attaching a sheet or other material to the surface, the total thickness is kept at a moderate level of 0.5 mm to 5 mm. The mechanical strength of the sheath can be increased without sacrificing its weight.

[0071] In addition, the display panel 100 can be made extremely thin and flexible. By using materials such as The surface area is 100cm 2 The weight of each display panel 100 should be between 0.1g and 50g. Preferably, the amount is 0.1 g or more and 30 g or less, more preferably, 0.1 g or more and 10 g or less, and even more preferably Alternatively, it can be between 0.1g and 5g.

[0072] The weight of the display panel 100 is the weight of the display panel 100 alone (maximum weight for displaying an image). It may be the weight of a part that realizes the minimum function (for example, a pair of substrates on which elements etc. are formed). In addition to this, a member (sheet, frame) for ensuring the strength of the display panel 100 The weight of the display panel 100 is also considered. By using such a lightweight display panel 100, the display device 3 The weight of the screen is equal to or greater than the weight of the screen used in the projection type display device. This makes it possible to make the product lighter than the conventional one.

[0073] By using a plurality of relatively small display panels 100 in the display device 30, high yield can be achieved. Furthermore, even if one type of display panel 100 is manufactured, the display panel 100 By changing the number and arrangement of the display areas 31, various display devices 30 with different sizes can be used. Therefore, it is possible to enrich the variety of products and to It also makes it easier to respond to small-scale production tailored to the needs of each individual customer. When used for purposes such as the above, it is useful to be able to easily customize it according to the facility or location. Also, a manufacturer may sell a unit including the display panel 100, and the user may use this to display the image. It is also possible to freely customize the size and shape of the display area 31.

[0074] The number of pixels (also called screen resolution) of the display area 31 of the display device 30 is The number of pixels in the display area 101 that contribute to the display is added together. Here, in order to make the display area 31 of the display device 30 have a predetermined number of pixels, two adjacent The display area 10 of the display panel 100 is located on the opposite side of the display surface. 1 is covered with a display area 101 of a display panel 100 on the display surface side, The number of pixels in the display area 31 may be adjusted to meet user needs and standards. It is possible to realize a display device 30 having a display area 31 with a large number of pixels.

[0075] The above is the explanation of the first configuration example.

[0076] [Modification of Configuration Example 1] In the above, a display device 3 having a large display area 31 is provided using a plurality of display panels 100. Although a configuration example of 100 is shown, a single display panel 100 can also be used.

[0077] 3A and 3B show an example of a display device 30 using one display panel 100. Figure 3(B) shows Figure 3(A) rotated by approximately 180 degrees. A schematic cross-sectional view taken along the line B1-B2 in FIG. 2(B) is shown.

[0078] The display panel 100 is bent in a ring shape so that the display surface faces outward. A portion of the visible light transmitting area 110 along one side of the display area 01 is transparent to the visible light. It is provided to cover a part of the area 101 .

[0079] In addition, a part of the display area 101 of the display panel 100 is a part of the area 120 that blocks visible light. The wiring 103, the FPC 104, and the like are covered.

[0080] In this way, even when one display panel 100 is used, the annular display area 31 has no seams. It is possible to display an image that does not appear in the original image.

[0081] The display device 30, which is configured with only one display panel 100, is suitable for use in small devices. For example, it can be worn as a ring, bracelet, watch, collar, headband, etc. Suitable for wearable devices, digital photo frames, and other desktop electronic devices Of course, the display device 30 having two or more display panels 100 can also be used in this It may be applied to such devices.

[0082] The above is a description of the modified example of the first configuration example.

[0083] [Configuration example 2] In the first example configuration, the display panel 100 is bent so that the display surface faces outward, and the outside of the ring Here, the display panel 100 is a display screen. The display device 30 is configured such that the image is displayed facing the inside of the ring. I will explain.

[0084] FIG. 4A shows two display panels (display panel 100a, display panel 100b) in FIG. 1B. 4(A) shows an example in which the display surface of the LCD panel 100 is positioned inward. 2(C) shows a schematic cross-sectional view taken along the line C1-C2 in FIG. 2(C). In FIG. 1C, four display panels (display panels 100a to 100d) are In this example, two adjacent display panels 100 are arranged with their display surfaces facing inward. The configuration of the overlapping portion is the same as that of the above-described configuration example 1 except for the bending direction of the display panel 100. , which can be used as a reference.

[0085] With this configuration, the display area 31 of the display device 30 is arranged in a circular shape without any joints. The multiple display areas 101 allow a seamless image to be displayed toward the inside of the ring. It becomes possible.

[0086] For example, it is preferable to configure the display device 30 so that the viewer can see the image from inside the ring. Since the image is displayed in 360 degrees around the observer, the observer feels a high sense of presence. In addition, since no seams are generated in the displayed image, the viewer can see the display device 30 The sense that the image is being displayed on a screen fades away, providing an extremely high level of immersion. Therefore, such a display device 30 is suitable for VR (Virtual Reality) applications. At this time, the display device 30 is placed so that the display area 101 surrounds the observer's head. Alternatively, the display device 30 may have a display area 101 large enough for an observer to enter inside. It is also possible.

[0087] For example, when a large display panel is placed in front of the observer, or when a large number of When multiple display panels are arranged side by side, the edges of the display panels and the edges of two adjacent panels may be damaged. The sense of immersion and realism is diminished when the boundaries of the display panel become visible. The same is true for HMDs (Head Mounted Displays).

[0088] In addition, when projecting an image along an interior wall using a projector, etc., it is necessary to project the image onto a curved surface. Depending on the distance between the wall and the projector, the image may become blurred due to the shadow. However, there are problems such as a decrease in clarity (definition) and brightness. One aspect is to display a seamless image in high definition and brightness all around the observer. This makes it possible to display images with a very high sense of realism and immersion.

[0089] The display device 30 according to one embodiment of the present invention can be used to display the same image when multiple viewers stand inside the display device 30. You can view images and share experiences with multiple people. For example, you can visit an amusement park or game center. It can be used in any amusement facility, such as planetariums, art museums, It can also be used for exhibitions at science museums, museums, aquariums, etc. It can also be used for winter sports such as skiing. A facility where you can simulate various sports, including water sports like diving and other marine sports. It can also be used to simulate the experience of traveling to tourist spots or space. It can also be suitably used in facilities where

[0090] In addition, the display device 30 can be transported after removing the plurality of display panels 100 and assembled on-site. Therefore, it is suitable for outdoor or indoor events that are limited in duration. It can be used.

[0091] In addition to the configurations shown in Figures 4(A) and 4(B), an upper opening, a lower opening, or both may be used. A display panel having a flat or curved display surface may be arranged to cover both sides. This allows the image to be displayed in all directions, up and down, left and right, from the perspective of the internal observer, making it possible to In addition, the display device 30 may be provided with a chair or the like inside for the observer to sit on. Any of these may be placed.

[0092] The above is the explanation of configuration example 2.

[0093] [Display unit configuration example] In the following, the present invention will be suitably applied to the display devices exemplified above or the display systems described below. An example of the configuration of a display unit having a display panel that can achieve this will be described.

[0094] 5(A) and 5(B) show an example of the configuration of the display unit 20. This shows the configuration when (A) is rotated approximately 180 degrees.

[0095] The display unit 20 includes a display panel 100 , a support 130 , and a drive device 132 .

[0096] The support 130 has a curved surface on one side thereof, and the display panel 100 is mounted along the curved surface. 5(A) and 5(B), the display surface of the display panel 100 is fixed in a convex shape. The display device is fixed to a support 130, but as shown in FIGS. 6(A) and 6(B), the display surface is concave. The distance may be fixed so that:

[0097] It is preferable that the support 130 and the display panel 100 are detachably fixed to each other. For example, use adhesive with low adhesive strength that allows for easy removal, adhesive sheets, double-sided tape, etc. It is preferable.

[0098] The support 130 is required to have a mechanical strength sufficient to maintain the shape of the display panel 100. For example, materials such as resin, metal, and alloy can be used. This is preferable because the knit 20 can be made lightweight.

[0099] Alternatively, the support 130 may be made of a plastic material, and the curvature of the curved surface may be freely changed. By doing so, the support 13 shown in Figs. Both the form in which the surface of 0 is convex and the form in which it is concave as shown in Figures 6(A) and (B) In this case, after bending the support 130 to a desired curvature, the surface When the display panel 100 is attached, no excessive external force is applied to the display panel 100, which is preferable. stomach.

[0100] A part of the edge of the support 130 is arranged from the surface to which the display panel 100 is attached to the opposite surface. It is preferable that the surface is curved so that the display panel 10 is continuous. 100) without bending a part of the support 130. The display panel 100 can be bent along the support 130 until the surface opposite to the surface .

[0101] The display panel 100 has a region 110 that transmits at least visible light, which is thicker than the support 130. It is preferable that the support 130 is fixed to the support 130 so that the support 130 protrudes outward. When two display units 20 are arranged side by side, the supports 130 do not physically interfere with each other. The area 110 of one display panel 100 is overlapped with the display area 101 of the other display panel 100. It is possible.

[0102] The display panel 100 has a visible light transmitting region 110 and a part of the display region 101. It is preferable that the support 130 is fixed to the support 130 so as to protrude outward from the support 130. In this way, when two display units 20 are arranged side by side, the supports 130 are physically spaced apart from each other. The protruding portion of the display area 101 of one display panel 100 is visible on the other display panel 100 without interfering with the other display panel 100. The visible light blocking area 120 of the display panel 100 can be covered, and the two display panels This makes it easy to arrange the display areas 101 of the display device 100 seamlessly.

[0103] The support 130 has an attachment mechanism 1 at a portion different from the surface to which the display panel 100 is fixed. The mounting mechanism 131 is used to fix the support 130 to a frame 151, which will be described later. 5(A)(B), etc., the attachment mechanism 131 is a part of the support 130. The structure of the attachment mechanism 131 is not limited to this. First, various configurations can be used to fix the support 130 to the frame 151. For example, It may have a mechanism that uses a spring to clamp and fix the frame, or a support A hole is provided in a part of the support 130, and the support 130 and the frame 151 are fixed with a screw or the like. That's fine.

[0104] The mounting mechanism 131 also adjusts the position of the support 130 after mounting it to the frame 151. For example, it is preferable that the support 130 has a mechanism for adjusting the curved surface. It is preferable that the mechanism has a mechanism that can adjust the position in two directions parallel to the two orthogonal axes. Or, in addition to the two orthogonal axes, the axis perpendicular to the orthogonal axes, which is parallel to each of the three axes, It is preferable that the device has a mechanism that allows the position to be adjusted in three directions. The rotation angle of the support 130 can be adjusted around an axis perpendicular to the curved surface of the support 130. It is more preferable that the display unit has a structure in which the display unit is mounted on the frame 151 (described later). After fixing the display units 20, the relative position of the display areas 101 of the two adjacent display units 20 is The positional deviation can be adjusted. Note that such a position adjustment mechanism is also included in the mounting mechanism. It may be provided on the frame 151 instead of 131 .

[0105] The support 130 has a driving device 132 on the side opposite to the surface on which the display panel 100 is fixed. It is preferable that the driving device 132 is positioned at the support 13. It is sufficient that the display panel 100 is fixed to a part other than the surface to which the display panel 100 is fixed. 00 is bent so that a part of it is positioned on the back side of the support 130, and is connected to the FPC 104. and electrically connects to the driving device 132.

[0106] The driver 132 transmits signals and potentials for driving the display panel 100 through the FPC 104. The driving device 132 has a function of supplying the input from the output device 152, which will be described later. A signal including the image data (hereinafter also referred to as an image signal) is transmitted to the display panel 100. It is preferable that the display panel 100 has a function of converting the received signal into a signal or potential for the display panel 100. Alternatively, the display panel 100 may be driven by the driving device 132 alone without being electrically connected to the output device 152. In this case, the drive device 132 may be configured to output a drive signal. The image data is stored in the storage device, or the image data is stored in the drive device 132. The configuration may be such that an external storage device (storage medium) such as a flash memory can be connected.

[0107] The driving device 132 includes an antenna, a radio receiver, a radio transmitter, a battery, a printed circuit board (circuit The printed circuit board may have one or more of the following: In particular, the drive unit 13 may be a device that has an IC mounted thereon, such as a drive unit or a memory device. 2 can receive the above-mentioned signals using wireless communication technology with the output device 152. This eliminates the need for cables, further simplifying the configuration.

[0108] The driving device 132 may include a power receiving device 133. Although an example in which the driving device 132 has a power receiving device has been shown, the display unit may be a separate device from the driving device 132. The power receiving device 133 is not particularly limited, but may be, for example, The power receiving device 133 can be applied to the power receiving device described in the fifth embodiment. It has a resonance coil, a rectifier circuit, a DC-DC converter, and a battery, and uses the magnetic resonance method. The driving device 132 can use a power receiving device that receives power from the power receiving device. This simplifies the configuration by eliminating the need for cables to supply power to each drive unit. It can be abbreviated.

[0109] In FIG. 5B, the driving device 132 is installed on a protruding part of the support 130. However, the present invention is not limited to this, and the driving device 132 may be displaced relative to the support 130. It is sufficient that it is fixed so that it does not move.

[0110] As shown in FIG. 6(C), a driving device 132 may be disposed inside the support 130. At this time, the FPC 104 is connected to the driving device 132 through an opening provided in the support 130. Alternatively, the driving device 132 may be provided on the surface of the support 130. A connector or a cable having a connector is arranged to electrically connect to the The connector and the FPC 104 may be electrically connected.

[0111] The above is a description of an example of the configuration of the display unit.

[0112] [Display system configuration example] An example of the configuration of a display system to which the above-described display unit can be applied will be described below. .

[0113] FIG. 7 shows a display system 10. The display system 10 includes a plurality of display units 20 (display The system includes units 20 a to 20 l), a frame 151 , and an output device 152 .

[0114] FIG. 8 shows the appearance of the frame 151 and the output device 152. FIG. 9 shows the appearance of the frame 151 and the output device 152. 1 is a diagram showing the inside of the display system 10 with a portion (the front side of the page) of the frame 151 and the like cut away. is.

[0115] 8, the frame 151 has a plurality of annular arms 151a. The display unit has legs 151b that support the arms 151a at intervals. When the size of the arms 20 is the same, it is preferable to make the intervals between the two arms 151a equal.

[0116] As shown in FIGS. 8 and 9, the arm portion 151a is provided on the support 130 of the display unit 20. The support 130 can be fixed by a mounting mechanism 131. It is sufficient that a convex portion or a concave portion that fits with the mechanism 131 is provided. When the recesses are arranged at equal intervals with high precision, the display areas of the two adjacent display units 20 This is preferable because it can prevent the position of the arm portion 101 from being displaced. 51a, a display unit 20 support 130 and a frame 151 are adjusted relative to each other. The device may have an adjustment mechanism that allows adjustment.

[0117] As shown in FIG. 9, each display unit 20 has a display panel 100 that is partially overlapped with an adjacent display panel. The frame 151 is detachably fixed to the frame 151 so as to overlap a part of the cable 100. Specifically, The area 110 of the display panel 100 that transmits visible light is The display panel 100 covers a part of the display area 101, and the display area 101 of the display panel 100 is not covered by the other adjacent The display unit 20 is disposed so as to cover a part of the region 120 of the display panel 100 that blocks visible light. is detachably fixed to the frame 151. In this way, the display area of ​​the display system 10 It is possible to display a seamless image across the entire area.

[0118] In addition, since the display unit 20 can be freely attached and detached from the frame 151, for example, Even if one of the units 20 becomes defective, it can be easily replaced. Therefore, it is possible to realize a display system 10 that is easy to maintain and manage. If the display panel 100 is detachable, the display panel 100 can be replaced with another For example, manufacturers can reuse parts of the display unit, reducing costs. The display panel 100 can be sold as a single unit 20, or the display panel 100 can be sold to the user as a replacement part. Alternatively, the display unit 20 can be collected and only the display panel 100 can be exchanged. After conversion, the display unit 20 can be sold again as a display unit 20.

[0119] Remove the display unit 20 from the frame 151 or attach the display unit to the frame 151. When attaching the display unit 20, the display unit 20 is covered with the display unit 20 of interest. However, since the display panel 100 is provided, there are cases where these may interfere with each other physically. Therefore, by providing a mechanism in the display system 10 that allows the display unit 20 to protrude toward the display surface, When attaching or detaching the display unit 20, the target display unit 20 and the adjacent display unit 20 This prevents physical interference between the display panel and the target. The display unit 20 has a display panel 100 that covers the display unit 20. The mechanism for releasing the display unit 20 is attached to the frame 151, the support 130 of the display unit 20, or the mounting Preferably, mechanism 131 has:

[0120] For example, as shown in FIG. 7, the upper one of the two display units 20 is The display panel 100 of the display unit 20 placed on the other side covers the display unit 20 located below. When replacing a certain display unit 20, if the same display unit as the target display unit 20 is A plurality of display units 20 at a height and a display unit 20 above the target display unit 20 The plurality of display units 20 may be simultaneously caused to protrude toward the display surface side. The display panel 100 of the display unit 20 located on the bottom side is When covering, the display units 20 below the target display unit 20 are covered. Just let it jut out.

[0121] Specifically, for example, in FIG. 7, when the display unit 20a is replaced, The display may be performed with the buttons 20b, 20d, and 20c protruding toward the display surface. When replacing the unit 20e, replace the display units 20f, 20g, 20h, 20a, and 20b. 0b, 20c, and 20d may be performed with the respective buttons protruding toward the display surface.

[0122] Here, the display unit 20 is inserted into the display system 10 from the frame 151 toward the display surface. The case where a mechanism for projecting the image is provided has been described. It is sufficient that there is no physical interference between the display panel 100 of the laptop 20 and the display panel 100, and it may have other mechanisms. For example, the display unit 20 may have a mechanism for sliding in the circumferential direction of the frame 151. Alternatively, the display panel 100 may be provided with a mechanism that allows the display panel 100 to be temporarily detached from the display unit 20. Alternatively, as will be described later, if the frame 151 has an openable / closable mechanism, (See Figures 12 and 13.) Even if you replace the display unit 20 with the frame 151 open, good.

[0123] The output device 152 outputs an image signal to the driver 132 of each display unit 20. It is a device that exerts force.

[0124] The output device 152 and each drive device 132 are electrically connected by a cable. However, it is preferable to have a configuration in which signals can be transmitted and received by wireless communication. As shown, the output device 152 is arranged inside the frame 151, thereby saving space. It can be achieved.

[0125] The output device 152 may be, for example, a Blu-ray disc, a DVD (Digital Video Disc), Portable Disk), flash memory, etc. Raw devices, HDD (Hard Disk Drive), SSD (Solid State Recording and playback devices equipped with storage devices such as a USB flash drive can be used. The image data stored in the storage device can be output to each display unit 20 as an image signal. Alternatively, the output device 152 may be configured to output image data acquired via a network. It is preferable that the display unit 20 has a function to output the signal to the display unit 20. It is suitable for applications such as digital signage because it can easily display the latest information. At this time, the output device 152 has a storage means that can temporarily store data. By doing so, you can view the image even when you are not connected to the network (offline). This is preferable because it allows the image to be displayed.

[0126] The output device 152 has a resolution of full high definition (1920 x 1080 pixels), 4K (3840 x 2160 pixels) or 8K (7680 x 4320 pixels) Uncompressed Disk Recorder (UDR) that can output high-resolution images without compression It is preferable to use a compressed disk recorder.

[0127] Furthermore, the output device 152 divides certain image data, converts it into a plurality of image signals, and outputs It is preferable that the display system 10 has a function of being able to display the image. It is possible to display one large image in the display area. This method is highly versatile because it does not require dividing the image data to be processed in advance.

[0128] Although the configuration in which three display units 20 are arranged vertically has been shown, the present invention is not limited to this. There may be one or two, or four or more. The figure shows a configuration in which three display units 20 are arranged in a line. As shown in FIG. 10, the electrodes may be arranged in a staggered pattern.

[0129] In addition, as shown in FIGS. 6(A) and 6(B), the display area 101 is arranged to be a concave surface. When using the display unit 20, the display unit 20 is disposed inside the frame 151. In this case, the output device 152 may be placed at the bottom of the frame 151 or at the top of the frame 151. Just place it outside 51.

[0130] In addition, in FIG. 7 and other figures, the four display panels 100 are arranged in a ring shape. Although the units 20 are arranged in the outer periphery of the frame 151, the number of units is not limited. FIG. 11(A) shows six display units 20 (display units 20a to 20f) in a frame. 1 is a schematic cross-sectional view taken along a plane parallel to the arm portion 151a when the arm portion 151 is disposed in the outer circumferential direction of the arm 151. In FIG. 11A, a total of six display panels 100a to 100f are used. is formed.

[0131] As shown in FIG. 11(B), the display system may have a protective member 134. The protective member 134 is provided on the outer side (the display surface side) of the plurality of display units 20 of the display system. ) and is provided so as to surround them. In FIG. 11(B), the shape of the protection member 134 is The protective member 134 is cylindrical in shape and overlaps at least the display area of ​​the display panel. The protective member 134 is made of a material having light-transmitting properties in the area where the protective member 134 overlaps the display area. The protective member 134 may have a light-blocking property so that the outside area cannot be seen. For example, a plastic plate such as an acrylic plate or a polyvinyl chloride plate, or a glass plate can be used. Alternatively, a film-like or sheet-like plastic substrate or the like may be used.

[0132] The space 135 between the display unit 20 and the protective member 134 is filled with a gas such as the atmosphere. Alternatively, a resin or the like may be provided to bond the display unit 20 and the protective member 134 together. It's fine.

[0133] Here, it is preferable that the frame 151 has an opening and closing mechanism. Even after the display unit 20 is installed in the frame 151, the operation inside the frame 151 can be performed. It is possible to carry out work.

[0134] In FIGS. 12A and 12B, a display system 10 having a frame 151 and an opening / closing mechanism is mounted on the frame. 1 shows a schematic view of the frame 151 as viewed in a direction parallel to the leg 151b.

[0135] Here, the arm portion 151a has a shaft portion 151c and a notch portion 151d. 12(A) to 12(C). 12(B), the frame 151 can be opened to the state shown in FIG.

[0136] In this case, the shaft portion 151c and the notch portion 151d are arranged in positions facing each other. However, by shifting the relative positions of the shaft 151c and the notch 151d, it is possible to When such an opening and closing mechanism is provided, the frame The legs 151b, which are located at the moving parts of 151, are provided with casters or the like, so that deformation can be easily performed. At this time, it is preferable that the legs located in the stationary portion of the frame 151 151b may be fixed to the ground or the like.

[0137] FIG. 13 shows a configuration in which the arm portion 151a of the frame 151 has two notches. By adopting such a configuration, the state shown in FIG. 13(A) can be changed to the state shown in FIG. 13(B). Alternatively, a portion of the frame 151 can be removed.

[0138] The above is a system that displays images in a ring shape using multiple display panels. However, depending on the location where this is applied, it may be possible to display an image without forming a ring. In other words, a configuration in which an image is displayed along a curved or flat surface may be used. Good too.

[0139] [Example of how to operate the display system] Next, an example of a method for operating the display system according to one embodiment of the present invention will be described. 1A to 1D are block diagrams for explaining how to operate the display system.

[0140] The display system 10 shown in FIG. 14(A) includes a plurality of display units installed in a frame 151. Each display unit 20 includes a display panel 100 and an output device 152. , and a drive unit 132.

[0141] The output device 152 outputs an image signal to the driver 132 of each display unit 20. This allows an image to be displayed on the display panel 100 of each display unit 20. The user supplies image data (Data) to be displayed to the output device 152, It is possible to display images on multiple display panels 100 in real time. Broadcasts distributed via radio waves or the Internet are received by a television receiver or modem, and then image data is The data can also be supplied to the output device 152.

[0142] FIG. 14B shows an example in which the output device 152 is equipped with a storage device 153. The storage device 153 can store image data. The output device 152 outputs the image data. By outputting an image signal based on the data, the display panel 100 of each display unit 20 The user can periodically view the image data stored in the storage device 153. By updating the image, a new image can be displayed on multiple display panels 100.

[0143] FIG. 14C shows an example in which an external storage device 154 can be connected to the output device 152. By connecting the external storage device 154 to the output device 152, the data stored in the external storage device 154 can be read. The image data is read, and the output device 152 outputs an image signal based on the read image data. The user can replace the external storage device 154 or change the data stored in the external storage device 154. By updating the stored image data, new images can be displayed on the plurality of display panels 100. can be done.

[0144] The external storage device 154 may be a storage device such as an HDD or SSD that can be attached or detached via a connector. Use of storage devices, flash memory, Blu-ray discs, DVDs, and other storage media can be done.

[0145] FIG. 14(D) shows an example in which the Internet 155 and a server 156 are used. The server 156 distributes image data to the output device 152 via the Internet 155. As shown in FIG. 14(D), a plurality of display systems 10 can be connected to the Internet 1. 55, a server 156 can collectively manage multiple display systems 10. In addition, it is possible to provide new information at all times.

[0146] This type of operation is common in large commercial facilities, public facilities such as airports and hospitals, and railways and buses. public transport vehicles, information displays operated by local governments, and multiple stores over a wide area In cases where the same information is displayed on multiple display systems 10, such as in a franchise business that owns a This is particularly effective.

[0147] In the configurations of FIGS. 14(C) and 14(D), the output device 152 has a storage device 153. If a storage device 153 is provided in FIG. 14C, an external storage device 154 can be installed. Even after the display system 10 is removed, the display system 10 can continue to display images by itself. By providing a storage device 153 in 14(D), it is possible to Even when the display system 10 is offline, it can continue to display images. This becomes:

[0148] The display system of one aspect of the present invention displays a seamless image on the inner or outer circumference of the ring. This allows the observer to obtain information from any direction, and is also different from conventional flat-panel It has the characteristic that it is more noticeable to people than a display device that displays a flat image. It is particularly useful for advertising purposes or for providing information in times of disaster. do.

[0149] This concludes the explanation of how the display system is operated.

[0150] This embodiment may be combined, at least in part, with other embodiments described in this specification. It can be implemented in combination.

[0151] (Embodiment 2) In this embodiment, configuration examples and application examples of a display panel and a display device according to one embodiment of the present invention will be described. This will be described with reference to the drawings.

[0152] [Configuration example 1] FIG. 15A is a schematic top view of a display panel 200 included in a display device of one embodiment of the present invention. is.

[0153] The display panel 200 has a display area 201 and a transparent layer adjacent to the display area 201 that transmits visible light. 15A, the surface 210 includes a region 210 that blocks visible light and a region 220 that blocks visible light. 1 shows an example in which an FPC 212 is provided on a display panel 200.

[0154] The display area 201 includes a plurality of pixels arranged in a matrix, and is used to display an image. Each pixel is provided with one or more display elements. Typically, a light-emitting element such as an organic EL element, or a liquid crystal element can be used.

[0155] In the region 210, for example, a pair of substrates constituting the display panel 200 and the pair of substrates A sealant or the like may be provided to seal the display element sandwiched between the two. The members provided in the region 210 are made of a material that is transparent to visible light.

[0156] In the region 220, for example, wiring electrically connected to the pixels included in the display region 201 is provided. In addition to these wirings, a driving circuit (scanning line driver) is also used to drive the pixels. In addition, the area 220 may be provided with an FPC 212. terminals (also called connection terminals) that electrically connect to the This includes the area in which it is provided.

[0157] A display device 50 according to an embodiment of the present invention includes a plurality of the above-described display panels 200. In B) a schematic top view of a display device 50 with three display panels is shown.

[0158] In the following, we will discuss the relationship between the display panels, the components included in the display panels, and In order to distinguish between components related to each display panel, an alphabetical character is added after the reference numeral. In addition, unless otherwise specified, the bottommost side (opposite side to the display surface side) ) and place the display panel or component above it in order. For one or more display panels and their components, the letter "b" and subsequent alphabets are used after the reference numeral. The letters will be added in alphabetical order. Even when describing a configuration including a display panel, the individual display panels or components When explaining common matters, the alphabet will be omitted.

[0159] The display device 50 shown in FIG. 15(B) includes a display panel 200a, a display panel 200b, and It includes a display panel 200c.

[0160] The display panel 200b is disposed so that a part of it overlaps the upper side (display surface side) of the display panel 200a. Specifically, a part of the display area 201a of the display panel 200a and the display panel The visible light transmitting region 210b of the display panel 200b overlaps with the visible light transmitting region 210b of the display panel 200a. The area 201a and the area 220b of the display panel 200b that blocks visible light are arranged so as not to overlap each other. are located at.

[0161] In addition, a part of the display panel 200c overlaps the upper side (display surface side) of the display panel 200b. Specifically, a part of the display area 201b of the display panel 200b and the display The visible light transmitting region 210c of the display panel 200b overlaps with the visible light transmitting region 210c of the display panel 200b. The display area 201b and the area 220c of the display panel 200c that blocks visible light do not overlap. They are arranged in such a way that

[0162] Since the region 210b that transmits visible light is superimposed on the display region 201a, the display region 20 The entire display area 1a can be viewed from the display surface side. 210c is superimposed, the entire image can be viewed from the display surface side. A region in which the display region 201a, the display region 201b, and the display region 201c are arranged seamlessly. The area (the area surrounded by the dashed line in FIG. 15(B)) can be used as the display area 51 of the display device 50. It becomes Noh.

[0163] Here, the width W of the region 210 shown in FIG. 15(A) is 0.5 mm or more and 150 mm or less, preferably Preferably, the thickness is 1 mm or more and 100 mm or less, and more preferably, 2 mm or more and 50 mm or less. Since the region 210 functions as a sealing region, it is preferable that the width W of the region 210 is large. The longer the distance between the edge of the display panel 200 and the display area 201, the greater the visibility from the outside. Therefore, it is possible to effectively prevent impurities such as water from penetrating into the display area 201. In particular, in this configuration example, the area 210 is provided adjacent to the display area 201, so that the area 2 It is important to set the width W of the display element 10 to an appropriate value. When a polymer is used, the width W of the region 210 is set to 1 mm or more, thereby preventing deterioration of the organic EL element. It should be noted that the display area can be effectively suppressed in areas other than the area 210. The distance between the edge of the area 201 and the edge of the display panel 200 is set to be within the above range. It is preferable that:

[0164] [Configuration example 2] In FIG. 15B, a configuration in which a plurality of display panels 200 are stacked in one direction is shown. A plurality of display panels 200 may be arranged in two directions, vertically and horizontally, so as to overlap each other.

[0165] FIG. 16A shows an example of a display panel 200 in which the shape of the area 210 is different from that of FIG. 15A. The display panel 200 shown in FIG. 16(A) has two adjacent sides of the display area 201. Area 210 is arranged along the

[0166] FIG. 16(B) shows a configuration in which two display panels 200 shown in FIG. 16(A) are arranged vertically and two horizontally. 16(C) shows a perspective view of the display device 50. 1 is a perspective schematic view as seen from the opposite side.

[0167] 16B and 16C, along the short side of the display area 201a of the display panel 200a, The area is provided so as to overlap with a part of the area 210b of the display panel 200b. The area along the long side of the display area 201a of the display panel 200a and the area of ​​the display panel 200c The area 210d of the display panel 200d is provided so as to overlap a part of the area 210c. The area along the long side of the display area 201b of the display panel 200b and the area along the long side of the display panel 200c It is provided so as to overlap an area along the short side of the display area 201c.

[0168] Therefore, as shown in FIG. 16(B), the display area 201a, the display area 201b, and the display area 201c are arranged. The area where the area 201c and the display area 201d are arranged seamlessly is displayed on the display device 50. It is possible to make it into an area 51.

[0169] Here, a pair of substrates used in the display panel 200 are made of a flexible material. It is preferable that the cable 200 has flexibility. As shown in the display panel 200a in (C), the FPC 212a and the like are provided on the display surface side. In this case, a part of the display panel 200a on the side where the FPC 212a is provided is curved, and the FPC 2 12a is arranged so as to overlap the lower side of the display area 201b of the adjacent display panel 200b. As a result, the FPC 212a can be physically connected to the rear surface of the display panel 200b. The display panel 200a and the display panel 200b can be arranged without interference. When bonding FPC212a and FPC212b together, there is no need to consider the thickness of the FPC212a. The upper surface of the region 210b of the display panel 200b and the upper surface of the display region 201a of the display panel 200a As a result, the difference in height of the display panel 200b located above the display area 201a can be reduced. This can prevent the end portion from being visible.

[0170] Furthermore, by making each display panel 200 flexible, the display area of ​​the display panel 200b can be The height of the upper surface of the display area 201b is the height of the upper surface of the display area 201a of the display panel 200a. The display panel 200b can be gently curved to match the height of the display panel. Therefore, each display area is different from the area where the display panel 200a and the display panel 200b overlap. The height of the display area 51 of the display device 50 can be adjusted to the same level. can be increased.

[0171] In the above, the relationship between the display panel 200a and the display panel 200b has been described as an example. The same applies to the two display panels.

[0172] In addition, in order to reduce the difference in level between two adjacent display panels 200, For example, the thickness of the display panel 200 is set to 1 mm or less, preferably 3 mm or less. It is preferable to set the thickness to 00 μm or less, and more preferably 100 μm or less.

[0173] FIG. 17(A) is a schematic top view of the display device 50 shown in FIGS. 16(B) and 16(C) as viewed from the display surface side. This is a schematic diagram.

[0174] Here, visible light (for example, 400 nm or more, 700 nm or more) in the area 210 of one display panel 200 If the transmittance of the display is not sufficiently high, the display area The brightness of the displayed image decreases depending on the number of display panels 200 that overlap with 201. For example, in the area A in FIG. 17A, the display area 2 of the display panel 200a In area B, one display panel 200b is superimposed on the other display panel 200a. Two display panels 200c and 200d are provided on the display area 201b of the display panel 200b. In area C, the image displayed on the display area 201a of the display panel 200a is A total of three display panels: display panel 200b, display panel 200c, and display panel 200d. 200 is superimposed.

[0175] In such a case, depending on the number of display panels 200 stacked on the display area 201, It is preferable to apply a correction to the image data to be displayed that locally increases the gradation of pixels. This is preferable. It is possible to suppress the downward movement.

[0176] In addition, by shifting the position of the display panel 200 arranged at the top, the display panel 20 at the bottom can be It is also possible to reduce the number of display panels 200 that overlap the display area 201 of 0.

[0177] In FIG. 17(B), the display panels arranged on the display panel 200a and the display panel 200b are The display panel 200c and the display panel 200d are spaced apart in one direction (X direction) by a distance equal to the width W of the region 210. In this case, the display panel 200 is arranged so that the display screens are shifted relative to each other. A region D in which one display panel 200 is superimposed on a display region 201, and a region B in which two display panels 20 There are two types of areas E with 0s superimposed.

[0178] The display panel may be arranged by shifting it in a direction (Y direction) perpendicular to the X direction. .

[0179] When the upper display panel 200 is relatively shifted, The outline of the area where the display areas 201 of the panel 200 are combined is different from a rectangular shape. Therefore, when the display area 51 of the display device 50 is rectangular as shown in FIG. In this case, an image is not displayed in the display area 201 of the display panel 200 located outside of this. At this time, the number of pixels in the area where no image is displayed should be taken into consideration. The number of pixels in the display area 51 is larger than the number obtained by dividing the total number of pixels in the display area 51 by the number of display panels 200. The display area 201 of the panel 200 may be provided with the display area 201 .

[0180] In the above description, the distance by which each display panel 200 is shifted relative to the other is defined as the area 210. However, the present invention is not limited to this and may be applied to the shape of the display panel 200 or a combination thereof. This may be set appropriately taking into consideration the shape of the display area 51 of the display device 50, etc.

[0181] [Cross-section example] 18(A) is a schematic cross-sectional view of two display panels 200 bonded together. In (A), the FPC 212a is on the display surface side of the display panel 200a, and the FPC 212b is on the display surface side of the display panel 200a. The diagram shows a configuration in which they are connected to the display surface side of the display panel 200b.

[0182] As shown in FIG. 18(B), the FPC 212a and the FPC 212b are Alternatively, the display panel 200a or the display panel 200b may be connected to the opposite side of the display surface. With this configuration, the edge of the display panel 200a disposed on the lower side is Since it can be attached to the back of the module 200b, the adhesive area can be increased, and the The mechanical strength of the mating portion can be increased.

[0183] As shown in FIG. 18(C) and FIG. 18(D), the display panel 200a and the display A light-transmitting resin layer 231 may be provided to cover the upper surface of the panel 200b. Specifically, the display areas of the display panels 200a and 200b and the display A resin layer 231 is provided to cover the area where the panel 200a and the display panel 200b overlap. It is preferable that

[0184] By providing the resin layer 231 across the plurality of display panels 200, the mechanical strength of the display device 50 can be improved. Furthermore, if the surface of the resin layer 231 is formed to be flat, This can improve the display quality of the image displayed in the display area 51. For example, Coating machines such as curtain coaters, gravure coaters, roll coaters, and spin coaters By using this apparatus, a resin layer 231 with high flatness can be formed.

[0185] The resin layer 231 has a refractive index that differs from that of the substrate used on the display surface side of the display panel 200 by 20%. % or less, preferably 10% or less, and more preferably 5% or less. By using the resin layer 231 having such a refractive index, the refractive index difference between the display panel 200 and the resin can be reduced. The difference in refractive index can be reduced, and light can be efficiently extracted to the outside. The resin layer 231 is provided so as to cover the step portion between the display panel 200a and the display panel 200b. As a result, the step portion becomes difficult to see, and therefore, the step portion is displayed in the display area 51 of the display device 50. This can improve the display quality of the image.

[0186] Examples of materials used for the resin layer 231 include epoxy resin, aramid resin, and acrylic. Uses organic resin films such as resin, polyimide resin, polyamide resin, and polyamideimide resin It is possible.

[0187] 19(A) and 19(B), the display device 50 is held on the display device 50 via a resin layer 231. It is preferable to provide a protective substrate 232. At this time, the resin layer 231 is in contact with the display device 50 and the protective substrate. The protective substrate 232 may also function as an adhesive layer for adhering the protective substrate 232 to the substrate. This not only protects the surface of the display device 50 but also increases the mechanical strength of the display device 50. The protective substrate 232 has a light-transmitting property at least in the area overlapping with the display area 51. In addition, the protective substrate 232 is made of a material that allows the area other than the area overlapping with the display area 51 to be viewed. The light-shielding layer may have a light-shielding property so as not to be obscured.

[0188] The protection substrate 232 may also function as a touch panel. If the protective substrate 232 is flexible and bendable, the protective substrate 232 is also flexible. It is preferable.

[0189] The protective substrate 232 is a substrate used on the display surface side of the display panel 200, or a resin layer 2 The difference in refractive index between the film 31 and the film 32 is 20% or less, preferably 10% or less, and more preferably 5% or less. It is preferable that

[0190] The protective substrate 232 is a film-like plastic substrate, for example, polyimide (PI ), aramid, polyethylene terephthalate (PET), polyethersulfone (PES ), polyethylene naphthalate (PEN), polycarbonate (PC), nylon, poly Ether ether ketone (PEEK), polysulfone (PSF), polyetherimide ( PEI), polyarylate (PAR), polybutylene terephthalate (PBT), silicone A plastic substrate such as a glass substrate or a polycarbonate substrate can be used. The substrate 232 is preferably flexible. The protective substrate 232 may also contain fibers. The protective substrate 232 is made of a resin film. It is not limited to transparent nonwoven fabrics made from continuous sheets of pulp, and fibroin. Sheets containing artificial spider silk fibers containing proteins, composites made by mixing these with resin, and fibers A laminate of a nonwoven fabric made of cellulose fibers with a width of 4 nm to 100 nm and a resin film, artificial A laminate of a sheet containing spider silk fibers and a resin film may also be used.

[0191] As shown in FIGS. 19(C) and 19(D), the display panel 200a and the display panel 20 A resin layer 233 is provided on the surface opposite to the display surface of the display panel 0b, and a protective substrate 234 is provided via the resin layer 233. In this way, the display panel 200a and the display panel 200b may be configured to By sandwiching the display device 50 between two protective substrates, the mechanical strength of the display device 50 is further increased. In addition, the resin layer 231 and the resin layer 233 can be made to have the same thickness, and the protective substrate 23 By using materials of the same thickness for the protective substrate 234 and the display panel 200, it is possible to For example, the display panel 200 may be disposed in the center of the stack. When bending, the display panel 200 is positioned at the center in the thickness direction, so that the bending As a result, the lateral stress applied to the display panel 200 is alleviated, and damage to the panel can be prevented. do.

[0192] As shown in FIGS. 19(C) and 19(D), the display panel 200a and the display panel 20 The resin layer 233 and the protection substrate 234 arranged on the rear side of the FPC 212a are At this time, it is preferable to provide an opening for the resin layer 233 to be exposed to the FPC 21. 2a, the connection between the display panel 200a and the FPC 212a It is possible to increase the mechanical strength and prevent problems such as peeling of the FPC212a. Similarly, it is preferable to provide a resin layer 233 so as to cover a part of the FPC 212b.

[0193] The resin layer 233 and the protective substrate 234 provided on the opposite side to the display surface are not necessarily The resin does not need to be transparent, and may be a material that absorbs or reflects visible light. The same material is used for the layer 233 and the resin layer 231, or the protective substrate 234 and the protective substrate 232. By using such a material, the manufacturing cost can be reduced.

[0194] As shown in FIG. 19(E), a protection substrate 235 may be provided on the display device 50. Similarly, a protective substrate 236 may be provided on the surface of the display panel opposite to the display surface. The plate 235 is thicker than the protective substrate 232 shown in FIGS. 19(A) to 19(D). , which is thicker than the protection substrate 234 shown in FIGS. 19(C) and 19(D).

[0195] The protective substrate may be, for example, a plastic plate such as an acrylic plate or a polyvinyl chloride plate, or a glass plate. Furthermore, metal, wood, stone, etc. may also be used as the protective substrate. By using a thick protective substrate, the surface of the display device 50 can be protected more reliably. In addition, the mechanical strength of the display device 50 can be further increased.

[0196] The protective substrate 235 is made of a material that is translucent at least in the area that overlaps with the display area 51. In addition, the protection substrate 235 is configured so that the area other than the area overlapping with the display area 51 is not visible. In this way, the film may have a light-blocking property.

[0197] The protective substrate 236 does not necessarily have to be transparent, but may absorb or reflect visible light. Materials that can be used may also be used.

[0198] [Example of display area configuration] Next, a configuration example of the display area 201 of the display panel 200 will be described. 16(A) is an enlarged schematic top view of region P, and FIG. 20(B) is an enlarged schematic top view of region Q. FIG.

[0199] As shown in FIG. 20A, a plurality of pixels 241 are arranged in a matrix in the display area 201. The display panel 200 is capable of full color display using three colors: red, blue, and green. In this case, the pixel 241 is a pixel that can display any one of the three colors. Alternatively, a pixel that can display white or yellow in addition to the above three colors may be provided. The area including 1 corresponds to the display area 201.

[0200] A wiring 242a and a wiring 242b are electrically connected to one pixel 241. Each of the wirings 242a intersects with the wiring 242b and is electrically connected to the circuit 243a. The wirings 242b are electrically connected to the circuit 243b. One of the circuits 243a and 243b functions as a scanning line driving circuit, and the other functions as a signal The circuit 243a and the circuit 243b can function as a line driver circuit. Either one or both of 43b may be omitted.

[0201] In FIG. 20A, a plurality of wirings 2 electrically connected to the circuit 243a or the circuit 243b are The wiring 245 is electrically connected to the FPC 223 in a region not shown. The circuit 243a and the circuit 243b have a function of supplying signals from the outside.

[0202] In FIG. 20A, a region including a circuit 243a, a circuit 243b, and a plurality of wirings 245 is , corresponds to the region 220 that blocks visible light.

[0203] In FIG. 20B, the area outside the pixel 241 provided at the edge transmits visible light. The area 210 corresponds to the area 210 through which the pixel 241, the wiring 242a and the wiring 24 2b, etc., which block visible light. Alternatively, if the wiring 242b is transparent to visible light, it may extend to the region 210. It may be provided as follows.

[0204] Here, the width W of the region 210 is the smallest among the regions 210 provided on the display panel 200. When the width W of the display panel 200 varies depending on the location, The shorter length can be set as the width W. In FIG. 20(B), the distance from the pixel 241 to the edge of the substrate is The distance to the vertical direction (i.e., the width W of the region 210) is the same in the vertical direction and the horizontal direction of the drawing. It shows.

[0205] FIG. 20(C) is a schematic cross-sectional view taken along the line A1-A2 in FIG. 20(B). The panel 200 has a pair of light-transmitting substrates (substrate 251, substrate 252). The substrate 251 and the substrate 252 are bonded together by an adhesive layer 253. The substrate on which the wiring 242b and the like are formed is referred to as substrate 251.

[0206] As shown in FIGS. 20B and 20C, the pixel 241 is located at the edge of the display area 201. In this case, the width W of the region 210 that transmits visible light is The length is from the edge of the pixel 241 to the edge of the pixel 241.

[0207] The edge of the pixel 241 is the most visible light-shielding member included in the pixel 241. It also refers to the edge of a member located at the edge. When a light-emitting element (also called an organic EL element) having a layer containing an organic compound is used, pixel 2 The edge of 41 is either an edge of the lower electrode, an edge of the layer containing a light-emitting organic compound, or an edge of the upper electrode. Either one may be used.

[0208] FIG. 21(A) shows a case where the position of the wiring 242a is different from that of FIG. 20(B). FIG. 21(B) is a schematic cross-sectional view taken along the line B1-B2 in FIG. 21(A). 21(C) is a schematic cross-sectional view taken along the cutting line C1-C2 in FIG. 21(A).

[0209] As shown in FIGS. 21A, 21B, and 21C, the wiring 242a is disposed at the edge of the display area 201. When the substrate 251 or the substrate 25 The length is from the end of the wiring 242a to the end of the wiring 242a. In the case where the wiring 242a is transparent, the region where the wiring 242a is provided is included in the region 210. Good too.

[0210] Here, when the density of pixels provided in the display area 201 of the display panel 200 is high, two When two display panels 200 are attached to each other or when the relative positions of the two display panels change, In this case, there may be a portion where the pixel arrangement intervals are discontinuous.

[0211] FIG. 22(A) shows a display area 201a of a display panel 200a provided at the bottom and a display area 201b of a display panel 200b provided at the top. The positional relationship between the display area 201b of the display panel 200b and the display area 201b of the display panel 200b when viewed from the display surface side. 22(A) shows the relationship between the display area 201a and the display area 201b. A part of the display area 201a is covered by the area 210b. There are.

[0212] In the example shown in FIG. 22(A), adjacent pixels 241a and 241b are relatively aligned in one direction. The arrow in the figure indicates that the display panel 200a is misaligned in the Y direction. In the example shown in FIG. 22(B), the direction of the shift is shown with respect to the adjacent panel 200b. The pixel 241a and the pixel 241b are arranged relatively in the vertical and horizontal directions (X and Y directions). ) are shown.

[0213] In the examples shown in FIGS. 22(A) and 22(B), the horizontal and vertical offset distances are In this case, the distance between the display area 201a and the display area 201b is smaller than one pixel. For the image data of the image to be displayed in either one of the areas 201b, By applying correction, it is possible to maintain display quality. Specifically, when the distance between pixels is small, If the distance between pixels is large, the pixel gradation (brightness) is lowered. In the case of a deviation that becomes too large, correction can be made by increasing the gradation (brightness) of the pixel. In the case of a misalignment where the pixels overlap each other by more than one pixel, the image data is adjusted so that the pixels at the bottom are not driven. is corrected by shifting it by one column.

[0214] In FIG. 22C, pixels 241a and 241b, which should have been adjacent to each other, are relatively This shows an example where the image is displaced by more than one pixel in one direction (Y direction). If a deviation of more than the distance of the element occurs, the protruding pixel (the pixel with hatching added) is The same applies when the displacement is in the X direction.

[0215] When bonding a plurality of display panels 200 together, each panel is bonded to prevent misalignment. It is preferable to provide a marker or the like on the display panel 200 for alignment. The display panel 200 has a surface on which a convex portion and a concave portion are formed, and the area where the two display panels 200 overlap is The convex portion and the concave portion may be fitted together (engaged together).

[0216] This embodiment may be combined, at least in part, with other embodiments described in this specification. It can be implemented in combination.

[0217] (Embodiment 3) In this embodiment, a display device, a display unit, and a display system according to one embodiment of the present invention will be described. An example of the configuration of a display panel that can be used will be described with reference to the drawings.

[0218] In this embodiment, a display panel using an organic EL element is mainly illustrated. The display panel that can be used in such a display device is not limited to this. A light-emitting panel or a display panel using a display element or a display element can also be used in the display device of one embodiment of the present invention. It is possible.

[0219] FIG. 23A shows a plan view of the display panel, and the dashed line D1-D2 in FIG. An example of a cross-sectional view of the region 810 that transmits visible light is shown in FIG. An example of a cross-sectional view is also shown.

[0220] The display panel shown in Configuration Example 1 is a top-emission type display using a color filter method. In this embodiment, the display panel is a display panel that displays, for example, R (red), G (green), There are two types of sub-pixels: one with three sub-pixels and one with blue (R, G, B, W), and one with four sub-pixels (R, G, B, W). A pixel expresses one color, and four sub-pixels (R, G, B, and Y (yellow)) express one color. There are no particular limitations on the color elements, and colors other than RGBWY can be used. For example, cyan or magenta may be used.

[0221] The display panel shown in FIG. 23A includes a region 810 that transmits visible light, a display portion 804, and an operating The display unit 804 includes a circuit section 806 and an FPC 808. The visible light transmitting area 810 is The operation circuit section 806 is arranged adjacent to the display section 804 along two sides thereof. The visible light transmitting region 810 includes a scan line driving circuit and a signal line driving circuit. The operating circuit section 806 also includes a region that blocks visible light.

[0222] The display panel shown in FIG. 23(B) includes a substrate 701, an adhesive layer 703, an insulating layer 705, and a plurality of A transistor, a conductive layer 857, an insulating layer 815, an insulating layer 816, an insulating layer 817, and a plurality of light-emitting Element, insulating layer 821, adhesive layer 822, colored layer 845, light-shielding layer 847, insulating layer 715, adhesive The adhesive layer 822, the insulating layer 715, the adhesive layer 713 and the substrate 711. The light emitting element and transistor included in the display unit 804 and the operating circuit unit 806 transmit visible light. The transistor is encapsulated by insulating layer 705 , insulating layer 715 , and adhesive layer 822 .

[0223] The display section 804 is a transistor mounted on the substrate 701 via an adhesive layer 703 and an insulating layer 705. The light emitting element 830 includes a lower electrode 820 on an insulating layer 817. 31, an EL layer 833 on the lower electrode 831, and an upper electrode 835 on the EL layer 833. That is, the light emitting element 830 includes a lower electrode 831, an upper electrode 835, and a lower electrode 836. 31 and an upper electrode 835 sandwiching an EL layer 833 .

[0224] The lower electrode 831 is electrically connected to the source electrode or the drain electrode of the transistor 820. The end of the lower electrode 831 is covered with an insulating layer 821. The lower electrode 831 is The upper electrode 835 is preferably transparent to visible light.

[0225] The display portion 804 includes a coloring layer 845 overlapping the light-emitting element 830 and a coloring layer 846 overlapping the insulating layer 821. The gap between the light emitting element 830 and the colored layer 845 is filled with an adhesive layer 822. It has been done.

[0226] The insulating layer 815 and the insulating layer 816 prevent impurities from diffusing into the semiconductor that constitutes the transistor. In addition, the insulating layer 817 reduces surface irregularities caused by the transistor. It is preferable to select an insulating layer that has a planarizing function for this purpose.

[0227] In addition, in the region of the display panel where no transistor is present, an insulating layer 815 and / or an insulating layer In particular, the insulating layer 816 may not be formed in the region 810 that transmits visible light. 5 and / or insulating layer 816 is not formed, the transmittance is improved, which is preferable. 3 shows a configuration in which the insulating layer 815 is not formed in the region 810 that transmits visible light. For example, silicon nitride is used as the insulating layer 815, and silicon oxynitride is used as the insulating layer 816. can be used.

[0228] The operating circuit section 806 is formed by forming a transistor on the substrate 701 via the adhesive layer 703 and the insulating layer 705. In FIG. 23B, the operating circuit portion 806 includes a plurality of transistors. One transistor is shown.

[0229] By using a film with high moisture resistance for the insulating layer 705 or the insulating layer 715, the light-emitting element 830 and the transistor This can prevent impurities such as water from entering the transistor 820, thereby improving the reliability of the display panel. Furthermore, since the display panel has a substrate, the display panel can be protected from physical impacts. The adhesive layer 703 is preferably used to protect the surface of the insulating layer 701. The substrate 711 is bonded to the insulating layer 715 via the adhesive layer 713. It's pasted together.

[0230] The conductive layer 857 transmits signals (video signals, clock signals, switch signals, etc.) from the outside to the operating circuit section 806. The external electrodes are electrically connected to the external electrodes that transmit signals such as start signals or reset signals and potentials. In this example, an FPC808 is used as an external electrode. The conductive layer 857 is made of the same material and in the same process as the electrodes and wiring used in the display section and the drive circuit section. Here, the conductive layer 857 is preferably formed as an electrode of the transistor 820. This shows an example made using the same materials and processes as in the above.

[0231] In the display panel shown in FIG. 23(B), the FPC 808 is located on the insulating layer 715. The body 825 includes the insulating layer 715, the adhesive layer 822, the insulating layer 817, the insulating layer 816, and the insulating layer 81. 5. The connector 825 is connected to the conductive layer 857 through an opening provided in the FPC The FPC 808 and the conductive layer 857 are electrically connected via the connector 825. To be continued.

[0232] FIG. 24 shows a schematic cross-sectional view of a case where a liquid crystal element is used as a display element. FFS (Fringe Field Switching) mode liquid crystal element The display panel shown in FIG. 24 includes a liquid crystal element 860, a polarizing plate 861, and a , 862, a backlight 863, etc. The liquid crystal element 860 has a comb-shaped first electrode 871, a liquid crystal 872, and a second electrode 873.

[0233] A cross section of two display panels shown in FIG. 23(B) bonded together with an adhesive layer 723 interposed therebetween. An example of this diagram is shown in Fig. 25. Note that an adhesive layer is used instead of the adhesive layer 723 to bond two display panels together. The flannel may be removably fastened.

[0234] In FIG. 25, the display area 101a of the lower (rear) display panel (the display area shown in FIG. 23(A)) 23A) and the visible light blocking region 120a (corresponding to the operating circuit section 804 shown in FIG. 23A). 06, etc.), and the display area 101b of the upper (front) display panel (FIG. 23(A) 23A) and a region 110b that transmits visible light (corresponding to the display portion 804 shown in FIG. 23A). 25 corresponds to the region 810 that transmits visible light. The overlapping portion of the two display panels 200a and 200b described in the second embodiment (the area in FIG. 18(A)) This is also an example of the area 270.

[0235] In FIG. 25, the display panel located on the upper side, which is the display surface side, has a region that transmits visible light. The display unit 804 of the lower display panel and the display unit 810 of the upper display panel are adjacent to each other. The area 810 of the display panel on the other side that transmits visible light overlaps with the area 810 of the display panel on the other side that transmits visible light. The non-display area between the display areas of the two display panels can be reduced or even eliminated. 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.

[0236] 25, the display unit 804 of the lower display panel and the visible light Between the regions 810 that transmit visible light, an adhesive layer 723 that transmits visible light is located. The substrate 711 of the upper display panel and / or the substrate 701 of the lower display panel may be bent. It is preferable that the difference in refractive index is small. This can reduce reflection at the interface due to the difference in refractive index of the laminated body located above the display unit 804. This also makes it possible to suppress display unevenness and brightness unevenness in large display devices.

[0237] [Examples of materials and forming methods] Next, materials that can be used for the display panel will be described. The explanation of the configuration may be omitted.

[0238] The substrate can be made of materials such as glass, quartz, organic resin, metal, and alloy. The substrate on the side from which light from the optical element is extracted is made of a material that transmits the light.

[0239] In particular, it is preferable to use a flexible substrate. For example, an organic resin or a flexible substrate may be used. Any thickness of glass, metal or alloy can be used.

[0240] Since organic resin has a smaller specific gravity than glass, when organic resin is used as a flexible substrate, This is preferable because it allows the display panel to be lighter than when glass is used.

[0241] It is preferable to use a highly tough material for the substrate. This makes it possible to achieve excellent impact resistance and breakage resistance. For example, it is possible to realize a display panel that is hard to damage, even if it is made of an organic resin substrate or a thin metal substrate. By using a metal or alloy substrate, it is lighter and less susceptible to breakage than when using a glass substrate. It is possible to realize a display panel.

[0242] Metallic and alloy materials have high thermal conductivity and can easily conduct heat across the entire substrate, making it ideal for display panels. This is preferable because it can suppress local temperature rises 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 do so.

[0243] 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. It can be used appropriately.

[0244] In addition, if a material with high thermal emissivity is used for the substrate, the surface temperature of the display panel will increase. This can prevent damage to the display panel and a decrease in reliability. A stack of high emissivity layers (for example, metal oxides or ceramic materials can be used) It may also be constructed as such.

[0245] As a substrate having flexibility and light transmission, a film-like plastic substrate, for example, Polyimide (PI), Aramid, Polyethylene terephthalate (PET), Polyethersulfone Polyethylene naphthalate (PEN), Polycarbonate (PC), Nylon, polyetheretherketone (PEEK), polysulfone (PSF), polyethylene Polyetherimide (PEI), Polyarylate (PAR), Polybutylene terephthalate (P A plastic substrate such as BT or silicone resin can be used. , fibers, etc., for example, prepreg, etc. The boards are not limited to resin films, but also include transparent nonwoven fabrics made from continuous sheets of pulp, Sheets containing artificial spider silk fibers containing a protein called fibroin, and these and resin and a composite made of cellulose fibers with a fiber width of 4 nm to 100 nm. A laminate of a woven fabric and a resin film, or a laminate of a sheet containing artificial spider silk fibers and a resin film may also be used.

[0246] As for the flexible substrate, the layer using the above material acts as a hard layer to protect the surface of the device from scratches. Coating layers (e.g., silicon nitride layers) and layers of materials that can disperse pressure (e.g., ara The insulating layer may be laminated with a polymer layer (e.g., a polymer layer).

[0247] The flexible substrate may be formed by stacking a plurality of layers. This means that the barrier properties against water and oxygen can be improved, resulting in a highly reliable display panel. can.

[0248] For example, a flexible substrate in which a glass layer, an adhesive layer, and an organic resin layer are laminated from the side closer to the light emitting element is used. The thickness of the glass layer is preferably 20 μm or more and 200 μm or less. The thickness is preferably 25 μm or more and 100 μm or less. A glass layer with such a thickness is highly resistant to water and oxygen. The thickness of the organic resin layer can be set to 1. The thickness is 0 μm or more and 200 μm or less, preferably 20 μm or more and 50 μm or less. By placing the mechanical resin layer on the outside of the glass layer, breakage and cracks in the glass layer are suppressed. Such a composite material of glass material and organic resin can improve the mechanical strength. By applying this to the substrate, it is possible to create a highly reliable flexible display panel. can.

[0249] A method for forming a flexible display panel will now be described.

[0250] For convenience, the components including pixels and drive circuits, and the components including optical members such as color filters are used here. A structure including a touch sensor circuit or other functional members is called an element layer. The element layer includes, for example, a display element, and in addition to the display element, The display device may include wiring for connecting the display device to the pixel and circuit, and elements such as transistors for use in the pixel and circuit.

[0251] Here, the support having an insulating surface on which the element layer is formed is referred to as a substrate. Let's say.

[0252] As a method for forming an element layer on a flexible substrate, a method for forming an element layer directly on the substrate may be used. a method in which an element layer is formed on a rigid supporting substrate, and then the element layer is peeled off from the supporting substrate; and a method of transferring the device layer onto the substrate.

[0253] If the material constituting the base material is heat resistant to the heat applied in the process of forming the element layer, It is preferable to form the element layer directly on the substrate, since this simplifies the process. When the element layer is formed in a state where the element is fixed to the support substrate, it is easy to transport the element within and between devices. This is preferable because it is easier.

[0254] In addition, when a method is used in which an element layer is formed on a supporting substrate and then transferred to a substrate, the supporting substrate is first A release layer and an insulating layer are laminated on the support substrate, and an element layer is formed on the insulating layer. The element layer is peeled off from the support substrate and transferred to the substrate. A material that allows peeling to occur at the interface of the insulating layer or in the peeling layer may be selected. According to the method, in the step of forming the element layer, a treatment is performed at a temperature higher than the heat-resistant temperature of the base material. This makes it possible to improve the reliability of the display panel.

[0255] For example, a layer containing a high melting point metal material such as tungsten as a peeling layer and an acid of the metal material A layer containing a silicon nitride is stacked on the peeling layer, and a layer containing a silicon nitride or silicon oxynitride is stacked on the peeling layer as an insulating layer. It is preferable to use a layer in which multiple layers of high melting point metal are stacked. For example, high temperature processing can be performed in the device layer, improving reliability. It is possible to further reduce impurities contained in the device layer and to further improve the crystallinity of semiconductors contained in the device layer. It is possible.

[0256] Peeling can be achieved by applying mechanical force to peel it off or by removing the peeling layer by etching. Alternatively, a liquid may be dropped onto a portion of the peeled surface and then allowed to penetrate the entire peeled surface. It is also possible.

[0257] Furthermore, if peeling is possible at the interface between the support substrate and the insulating layer, it is not necessary to provide a peel layer. For example, glass is used as the support substrate and an organic resin such as polyimide is used as the insulating layer. A part of the organic resin is locally heated by laser light or the like to form a peeling starting point, The separation may be performed at the interface between the glass and the insulating layer. Alternatively, the separation may be performed at the interface between the supporting substrate and the insulating layer containing the organic resin. A layer of highly thermally conductive material such as metal or semiconductor is placed between the two layers, and is heated by passing an electric current through it. In this case, the insulating film containing the organic resin may be peeled off by heating the insulating film. The edge layer can also be used as a substrate.

[0258] The adhesive layer can be made of a variety of resins, including UV-curable resins, reactive curable resins, thermosetting resins, and anaerobic resins. Various curable resins such as epoxy resins, Acrylic resin, silicone resin, phenolic resin, polyimide resin, imide resin, PVC (Polyvinyl chloride) resin, PVB (Polyvinyl butyral) resin, EVA (ethylene vinyl acetate resins, etc. In particular, materials with low moisture permeability such as epoxy resins are preferred. It is also preferable to use a two-component mixed resin. Also, an adhesive sheet or the like may be used.

[0259] The resin may also contain a desiccant. For example, an oxide of an alkaline earth metal (an acid The material used is one that absorbs moisture by chemical adsorption, such as calcium oxide or barium oxide. Alternatively, materials such as zeolite and silica gel can absorb moisture by physical adsorption. If a desiccant is included, impurities such as moisture may penetrate into the light emitting element. This is preferable because it can suppress the penetration of light and improve the reliability of the display panel.

[0260] Furthermore, by mixing a filler with a high refractive index or a light scattering material into the resin, it is possible to For example, titanium oxide, barium oxide, Zeolite, zirconium, etc. can be used.

[0261] The insulating layers 705 and 715 are preferably made of insulating films having high moisture resistance. Alternatively, the insulating layers 705 and 715 may have a function of preventing impurities from diffusing into the light-emitting element. It is preferable that the compound has the following structure:

[0262] Highly moisture-proof insulating films include silicon nitride films and silicon nitride oxide films. and films containing nitrogen and aluminum, such as an aluminum nitride film. A silicon oxide film, a silicon oxynitride film, an aluminum oxide film, or the like may also be used.

[0263] For example, the water vapor permeability of a highly moisture-proof insulating film is 1×10 -5 [g / (m 2 ·day) ] or less, preferably 1 × 10 -6 [g / (m 2 ·day)] or less, preferably 1 × 1 0 -7 [g / (m 2 ·day)] or less, more preferably 1 × 10 -8 [g / (m 2 ·d ay)] below.

[0264] In the display panel, at least the insulating layer on the light-emitting surface side of the insulating layer 705 or the insulating layer 715 The insulating layer 705 and the insulating layer 706 must be transparent to the light emitted from the light emitting element. In the case where the insulating layer 705 or the insulating layer 715 has the insulating layer 15, the insulating layer 705 or the insulating layer 715 is the side that transmits light emitted from the light emitting element. The insulating layer has a higher transmittance at wavelengths of 400 nm to 800 nm than the other insulating layer. A high average is preferable.

[0265] The insulating layer 705 and the insulating layer 715 preferably contain oxygen, nitrogen, and silicon. For example, the insulating layer 705 and the insulating layer 715 preferably contain silicon oxynitride. The insulating layer 705 or the insulating layer 715 may contain silicon nitride or silicon nitride oxide. The insulating layers 705 and 715 are preferably formed of a silicon oxynitride film and a silicon nitride film. It is preferable that the silicon oxynitride film and the silicon nitride film are in contact with each other. Silicon oxide films and silicon nitride films are alternately stacked, and anti-phase interference occurs frequently in the visible range. By doing so, the transmittance of the laminate in the visible region can be increased.

[0266] The structure of the transistors included in the display panel is not particularly limited. The transistor may be a top gate transistor or an inverted staggered transistor. The transistor may have either a top-gate or bottom-gate structure. The semiconductor material is not particularly limited, and examples thereof include silicon, germanium, and organic semiconductors. Or, indium, gallium, zinc, such as In-Ga-Zn metal oxides. An oxide semiconductor containing at least one of these may be used.

[0267] The crystallinity of the semiconductor material used in the transistor is not particularly limited. A semiconductor having crystallinity (a microcrystalline semiconductor, a polycrystalline semiconductor, a single-crystal semiconductor, or a semiconductor having a partially crystalline region) If a semiconductor having crystallinity is used, This is preferable because it can suppress deterioration of the resistor characteristics.

[0268] For stabilizing the characteristics of the transistor, it is preferable to provide an underlayer film. , silicon oxide film, silicon nitride film, silicon oxynitride film, silicon nitride oxide film, etc. The base film can be formed by a single layer or a multilayer structure using an organic insulating film. , CVD (Chemical Vapor Deposition) method (Plasma CVD method, thermal CVD method, MOCVD (Metal Organic CVD) method, etc.), ALD (Atomic Layer Deposition), coating, printing, etc. In addition, the undercoat film may not be provided if it is not necessary. The layer 705 can also serve as an underlying film for the transistor.

[0269] The light emitting element can be a self-luminous element, which can be illuminated by current or voltage. The category includes devices whose light intensity is controlled, such as light-emitting diodes (LEDs), organic An EL element, an inorganic EL element, etc. can be used.

[0270] Light-emitting elements are available in top-emission, bottom-emission, and dual-emission types. The electrode on the light extraction side uses a conductive film that transmits visible light. In addition, it is preferable to use a conductive film that reflects visible light for the electrode on the side from which light is not extracted. stomach.

[0271] The conductive film that transmits visible light is made of, for example, indium oxide, indium tin oxide, indium tin oxide, It is formed using zinc oxide, zinc oxide (ZnO), zinc oxide doped with gallium, etc. Also, gold, silver, platinum, magnesium, nickel, tungsten, chromium, Metallic materials such as molybdenum, iron, cobalt, copper, palladium, or titanium, Alloys containing these materials, or nitrides of these metallic materials (e.g., titanium nitride), etc., also have translucency. In addition, the laminated film of the above materials can be used as a conductive layer. For example, a laminate of an alloy of silver and magnesium and indium tin oxide can be used. It is preferable to use a film or the like because it can increase the conductivity. It's fine.

[0272] The conductive film that reflects visible light is made of, for example, aluminum, gold, platinum, silver, nickel, tungsten, or the like. Metallic materials such as stainless steel, chromium, molybdenum, iron, cobalt, copper, or palladium, or In addition, the above metal materials and alloys may contain lanthanum. Tungsten, neodymium, germanium, etc. may be added. Titanium, nickel Alternatively, an alloy containing neodymium and aluminum (aluminum alloy) may be used. Alternatively, an alloy containing silver and copper, palladium, or magnesium may be used. The alloy is preferable because of its high heat resistance. Furthermore, an aluminum film or an aluminum alloy film By laminating a metal film or a metal oxide film in contact with the surface of the substrate, oxidation can be suppressed. Examples of materials for such metal films and metal oxide films include titanium and titanium oxide. Alternatively, the conductive film that transmits visible light may be laminated with a film made of a metal material. and indium tin oxide laminated film, silver-magnesium alloy and indium tin oxide laminated film etc. can be used.

[0273] The lower electrode 831 and the upper electrode 835 are made of the above-mentioned conductive film that transmits visible light. Alternatively, a conductive film that reflects visible light can be used.

[0274] The electrodes may be formed by vapor deposition or sputtering. Forming using ejection methods such as ink jet printing, printing methods such as screen printing, or plating methods It can be achieved.

[0275] A voltage higher than the threshold voltage of the light emitting element is applied between the lower electrode 831 and the upper electrode 835. When this occurs, holes are injected into the EL layer 833 from the anode side, and electrons are injected from the cathode side. The electrons and holes are recombined in the EL layer 833, and the light-emitting material contained in the EL layer 833 emits light. It glows.

[0276] The EL layer 833 has at least a light-emitting layer. The EL layer 833 includes the following layers other than the light-emitting layer: Materials with high hole injection properties, materials with high hole transport properties, hole blocking materials, materials with high electron transport properties Highly electron-injecting or bipolar material (highly electron-transporting and hole-transporting properties) The layer may further include a layer containing a material.

[0277] The EL layer 833 can be made of either a low molecular weight compound or a high molecular weight compound. The layers constituting the EL layer 833 may be formed by evaporation (vacuum evaporation). It can be formed by methods such as transfer method, printing method, ink jet method, coating method, etc. Cut.

[0278] The light emitting element 830 may contain two or more luminescent materials, which may result in, for example, white light. For example, two or more luminescent materials can emit light of complementary colors. White light can be obtained by selecting a luminescent material so that the relationship , R (red), G (green), B (blue), Y (yellow), or O (orange) luminescent materials, It is possible to use a luminescent material that emits light containing spectral components of two or more of the colors R, G, and B. For example, a light-emitting substance that emits blue light and a light-emitting substance that emits yellow light may be used. In this case, the emission spectrum of the luminescent material that emits yellow light contains green and red spectral components. In addition, it is preferable that the light emitting element 830 has an emission spectrum in the visible region (for example, 2 within the range of 350nm to 750nm, or 400nm to 800nm, etc. It is preferable that the peaks are more than 100%.

[0279] The EL layer 833 may have a plurality of light-emitting layers. The optical layers may be stacked in contact with each other or with a separating layer interposed therebetween. For example, a separation layer may be provided between the fluorescent-emitting layer and the phosphorescent-emitting layer.

[0280] The separation layer is used to separate, for example, the excited state of the phosphorescent material generated in the phosphorescent-emitting layer from the excited state of the fluorescent-emitting layer. Prevents energy transfer (especially triplet energy transfer) to fluorescent materials via the Dexter mechanism The separation layer only needs to be a few nanometers thick. .1nm to 20nm, or 1nm to 10nm, or 1nm to 5nm The separating layer may be made of a single material (preferably a bipolar material) or a plurality of materials. The material includes a hole transporting material and an electron transporting material.

[0281] The separation layer may be formed using a material contained in the light-emitting layer that is in contact with the separation layer. This makes it easier to fabricate the light-emitting device and reduces the driving voltage. When the separation layer is made of a host material, an assist material, and a phosphorescent material (guest material), The separation layer may be formed of a host material and an assist material. The phosphorescent layer has a region that does not contain the material, and the phosphorescent layer has a region that contains the phosphorescent material. The separation layer and the phosphorescent light-emitting layer can be deposited by selectively depositing them with or without a phosphorescent material. In addition, by adopting such a configuration, the separation layer and the phosphorescent layer can be formed in the same chamber. This makes it possible to reduce the manufacturing cost.

[0282] The light emitting element 830 may be a single element having one EL layer, or a charge emitting element. The device may be a tandem device having a plurality of EL layers stacked with a bare layer interposed therebetween.

[0283] The light emitting element is preferably provided between a pair of highly moisture-proof insulating films. This makes it possible to prevent impurities such as water from entering the light emitting element, and thus prevents a decrease in the reliability of the display panel. It can be suppressed.

[0284] The insulating layer 815 and the insulating layer 816 may be, for example, a silicon oxide film or a silicon oxynitride film. An inorganic insulating film such as an aluminum oxide film or an inorganic insulating film can be used. The insulating layer 817 and the insulating layer 816 may be formed of different materials. The insulating layer 17a and the insulating layer 817b may be made of, for example, polyimide, acrylic, polyamide, polyamide, or the like. Organic materials such as methylimide amide and benzocyclobutene resins can be used. In addition, low dielectric constant materials (low-k materials) can be used. Each insulating layer may be formed by laminating layers.

[0285] The insulating layer 821 is formed using an organic insulating material or an inorganic insulating material. Examples of the resin include polyimide resin, polyamide resin, acrylic resin, siloxane resin, and epoxy resin. In particular, photosensitive resin materials can be used. An opening is formed on the bottom electrode 831, and the sidewall of the insulating layer 821 at the opening has a curvature. It is preferable to form the inclined surface so that the inclined surface is formed by the inclined surface.

[0286] The method for forming the insulating layer 821 is not particularly limited, but may be a photolithography method, a sputtering method, or the like. , evaporation method, droplet ejection method (inkjet method, etc.), printing method (screen printing, offset printing) It is best to use a printing press, etc.

[0287] The display panel functions as an electrode or wiring of a transistor, or an auxiliary electrode of a light-emitting element. The conductive layer used may be made of, for example, molybdenum, titanium, chromium, tantalum, tungsten, or aluminum. Metallic materials such as aluminum, copper, neodymium, scandium, etc., or alloy materials containing these elements The conductive layer can be formed as a single layer or a laminated layer using a conductive metal oxide. The conductive metal oxide may be indium oxide (In2O3, etc.). ), tin oxide (SnO2, etc.), zinc oxide (ZnO, etc.), indium tin oxide (In2O3 -SnO2, etc.), indium zinc oxide (In2O3-ZnO, etc.) or these metal oxides A material containing silicon oxide can be used.

[0288] 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 band can be used for each color layer. Using various materials, we have developed a printing method, an inkjet method, and an etching method using photolithography. The white sub-pixel is formed at a desired position by a chipping method or the like. A transparent or white resin may be placed on top of it.

[0289] 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 to prevent color mixing between adjacent light-emitting elements. By providing the light-shielding layer so that it overlaps the light-shielding layer, it is possible to suppress light leakage. Materials that block light emitted from the light-emitting element can be used, and include, for example, metal materials, pigments, and dyes. The black matrix may be formed using a resin material containing the light-shielding layer. If the light source is provided in an area other than the display area, unintended light leakage due to guided light can be suppressed. This is preferable.

[0290] In addition, an overcoat may be provided to cover the colored layer and the light-shielding layer. By doing so, it is possible to prevent impurities contained in the colored layer from diffusing into the light emitting element. The overcoat is made of a material that transmits light emitted from the light emitting element, such as silicon nitride. Inorganic insulating materials such as silicon oxide and organic insulating materials such as acrylic resin and polyimide resin are used. It can also be used as a laminated structure of a film containing an organic insulating material and a film containing an inorganic insulating material. good.

[0291] In addition, when the material for the adhesive layer is applied onto the colored layer and the light-shielding layer, the material for the overcoat is It is preferable to use a material that has high wettability with respect to the material of the adhesive layer. As the substrate, an oxide conductive film such as an indium tin oxide film or an A thin film having a light-transmitting property is used. It is preferable to use a metal film such as a g film.

[0292] As a connector, various anisotropic conductive films (ACF) Conductive Film) and Anisotropic Conductive Paste (ACP) c Conductive Paste) can be used.

[0293] This embodiment mode can be combined with other embodiment modes as appropriate.

[0294] (Fourth embodiment) In this embodiment, a touch panel that can be used for a display panel of one embodiment of the present invention will be described. The following description will be made with reference to the drawings. For details, the above description can be referred to. However, the present invention is not limited to this. For example, other elements (display elements) described later may be used. A touch panel using a touch panel (such as a touch panel) can also be used as the display panel of one embodiment of the present invention.

[0295] [Configuration example 1] 26(A) is a top view of the touch panel. 26(C) is a cross-sectional view taken along the dashed line in FIG. This is a cross-sectional view between EF.

[0296] The touch panel 390 shown in FIG. 26(A) includes a display unit 301 (which also serves as an input unit), a scanning line Drive circuit 303g(1), imaging pixel drive circuit 303g(2), image signal line drive circuit 303 303s(1) and an image pickup signal line drive circuit 303s(2).

[0297] The display unit 301 includes a plurality of pixels 302 and a plurality of imaging pixels 308 .

[0298] The pixel 302 includes a plurality of sub-pixels, each of which includes a light-emitting element and a pixel circuit.

[0299] The pixel circuit can supply power to drive the light emitting element. The pixel circuit is electrically connected to a wiring that can supply an image signal. The wiring can be electrically connected to the wiring.

[0300] The scanning line driver circuit 303g(1) can supply a selection signal to the pixel 302.

[0301] The image signal line driver circuit 303s(1) can supply image signals to the pixels 302. .

[0302] A touch sensor can be configured using the imaging pixels 308. Specifically, 308 can detect a finger or the like touching the display unit 301.

[0303] The imaging pixel 308 includes a photoelectric conversion element and an imaging pixel circuit.

[0304] The imaging pixel circuit can drive the photoelectric conversion element. The imaging pixel circuit is electrically connected to a wiring that can supply a power supply potential. The power supply is electrically connected to a wiring that can supply power.

[0305] The control signal may be, for example, a signal to select an imaging pixel circuit that reads out a recorded imaging signal. a signal that can initialize the imaging pixel circuit; a signal that can initialize the imaging pixel circuit; Examples include a signal that can determine the time to be detected.

[0306] The imaging pixel drive circuit 303g(2) can supply a control signal to the imaging pixel 308. do.

[0307] The imaging signal line driving circuit 303s(2) can read out imaging signals.

[0308] As shown in FIGS. 26B and 26C, the touch panel 390 includes a substrate 701, an adhesive layer 70 3, an insulating layer 705, a substrate 711, an adhesive layer 713, and an insulating layer 715. 701 and substrate 711 are bonded together with adhesive layer 360 .

[0309] The substrate 701 and the insulating layer 705 are bonded together with an adhesive layer 703. The insulating layer 715 is attached with an adhesive layer 713 .

[0310] Substrate 701 and substrate 711 are preferably flexible.

[0311] For materials that can be used for the substrate, adhesive layer, and insulating layer, see the above embodiment. It is possible.

[0312] The pixel 302 includes a subpixel 302R, a subpixel 302G, and a subpixel 302B (see FIG. 2). 6(C)). The subpixel 302R has a light-emitting module 380R, and the subpixel 302G has The subpixel 302B has a light-emitting module 380G, and the subpixel 302B has a light-emitting module 380B.

[0313] For example, the sub-pixel 302R includes a light-emitting element 350R and a pixel circuit. The light emitting device 350R includes a transistor 302t that can supply power to the light emitting device 350R. The module 380R includes a light emitting element 350R and an optical element (for example, a colored layer that transmits red light). 367R).

[0314] The light emitting element 350R is composed of a lower electrode 351R, an EL layer 353, and an upper electrode 352 arranged in this order. (Fig. 26(C)).

[0315] The EL layer 353 includes a first EL layer 353a, an intermediate layer 354, and a second EL layer 353b. They are stacked in this order.

[0316] In order to efficiently extract light of a specific wavelength, the light emitting module 380R is equipped with a microphone. Specifically, it is possible to efficiently extract specific light. The EL layer is placed between a film that reflects visible light and a film that is semi-reflective and semi-transparent, which are arranged as shown in the figure. Good too.

[0317] For example, the light emitting module 380R includes an adhesive layer in contact with the light emitting element 350R and the color layer 367R. It has a layer 360.

[0318] The colored layer 367R is located so as to overlap the light emitting element 350R. A part of the light emitted by R is transmitted through the adhesive layer 360 and the colored layer 367R, and is reflected by the arrows in the figure. The light is emitted to the outside of the light emitting module 380R as shown in FIG.

[0319] The touch panel 390 has a light-shielding layer 367BM. The light-shielding layer 367BM is a colored layer (e.g., For example, it is provided so as to surround the colored layer 367R.

[0320] The touch panel 390 has an anti-reflection layer 367p at a position overlapping the display unit 301. The antireflection layer 367p may be, for example, a circular polarizer.

[0321] The touch panel 390 includes an insulating layer 321. The insulating layer 321 is connected to the transistor 302t. The insulating layer 321 flattens the unevenness caused by the pixel circuits and the imaging pixel circuits. It can also be used as a layer for diffusing impurities into the transistor 302t, etc. An insulating layer having a layer capable of suppressing diffusion laminated thereon can be applied to the insulating layer 321. do.

[0322] The touch panel 390 has a partition wall 328 that overlaps the end of the lower electrode 351R. A spacer 329 for controlling the distance between the substrate 701 and the substrate 711 is provided on the partition wall 328 .

[0323] The image signal line driver circuit 303s(1) includes a transistor 303t and a capacitor 303c. The driver circuit can be formed on the same substrate as the pixel circuit in the same process. As shown in (B), the transistor 303t has a second gate 304 on the insulating layer 321. The second gate 304 is electrically connected to the gate of the transistor 303t. Alternatively, different potentials may be applied to the first and second electrodes. The second gate 304 may be provided to the transistor 308t, the transistor 302t, and so on.

[0324] The imaging pixel 308 includes a photoelectric conversion element 308p and an imaging pixel circuit. The image pickup pixel circuit can detect light incident on the photoelectric conversion element 308p. Includes Transistor 308t.

[0325] For example, a pin-type photodiode can be used as the photoelectric conversion element 308p.

[0326] The touch panel 390 has wiring 311 through which signals can be supplied, and terminals 319 The wiring 311 is provided to supply signals such as image signals and synchronization signals. The FPC 309 is electrically connected to the terminal 319. A printed wiring board (PWB) may be attached.

[0327] In addition, transistors such as transistor 302t, transistor 303t, and transistor 308t The transistors can be formed in the same process, or they can be formed in different processes. Good too.

[0328] [Configuration example 2] 27(A) and (B) are perspective views of the touch panel 505A. Figure 28(A) shows a cross section between the dashed line G-H shown in Figure 27(A). Figure.

[0329] As shown in FIGS. 27A and 27B, the touch panel 505A includes a display unit 501, a scanning line The touch panel 50 includes a drive circuit 303g(1) and a touch sensor 595. 5A includes a substrate 701, a substrate 711, and a substrate 590.

[0330] The touch panel 505A has a plurality of pixels and a plurality of wirings 311. 1 can supply signals to the pixels. The terminal 319 is made of FPC509 (1 ) and electrically connect it.

[0331] The touch panel 505A includes a touch sensor 595 and a plurality of wirings 598. The wiring 598 is electrically connected to the touch sensor 595. The wiring 598 is connected to the substrate 59 The terminal is connected to the FPC509. In FIG. 27(B), for clarity, the back surface of the substrate 590 is The electrodes and wiring of the touch sensor 595 provided on the side (the side facing the substrate 701) are indicated by solid lines. is shown.

[0332] For example, a capacitance type touch sensor can be applied to the touch sensor 595. There are various types of capacitive touch panels, such as surface capacitive touch panels and projected capacitive touch panels. This shows a case where a capacitance type touch sensor is applied.

[0333] The projected capacitive type is mainly divided into self-capacitance type and mutual capacitance type, which differ mainly in the driving method. The mutual capacitance method is preferable because it allows simultaneous multi-point detection.

[0334] The touch sensor 595 is capable of detecting the proximity or contact of a detection object such as a finger. Various sensors can be applied.

[0335] The projected capacitive touch sensor 595 has an electrode 591 and an electrode 592. 591 is electrically connected to one of the plurality of wirings 598, and the electrode 592 is electrically connected to one of the plurality of wirings 598. and electrically connect to any other of the above.

[0336] As shown in FIGS. 27(A) and 27(B), the electrodes 592 are made up of a plurality of electrodes repeatedly arranged in one direction. The shape is such that two quadrilaterals are connected at their corners.

[0337] The electrode 591 is quadrilateral and is repeatedly arranged in a direction intersecting the direction in which the electrode 592 extends. The plurality of electrodes 591 are not necessarily arranged in a direction perpendicular to one electrode 592. The angle need not be 90 degrees, but may be less than 90 degrees.

[0338] The wiring 594 is provided so as to intersect with the electrode 592. The wiring 594 is provided so as to sandwich the electrode 592. Two electrodes 591 are electrically connected. At this time, the surface of the intersection of the electrode 592 and the wiring 594 It is preferable to have a shape that minimizes the product. The area can be reduced, and the unevenness of the transmittance can be reduced. It is possible to reduce unevenness in the brightness of light.

[0339] The shapes of the electrodes 591 and 592 are not limited to this, and may take various shapes. For example, a plurality of electrodes 591 are arranged with as few gaps as possible, and the electrodes 591 are connected to each other via an insulating layer. 92 may be provided at intervals so as to form an area that does not overlap with the electrode 591. At this time, a dummy electrode 592 is placed between two adjacent electrodes 592, and is electrically insulated from these electrodes. Providing an electrode is preferable because it can reduce the area of ​​the region with different transmittance.

[0340] A more specific example of the configuration of the touch sensor 595 will be described later.

[0341] As shown in FIG. 28(A), the touch panel 505A includes a substrate 701, an adhesive layer 703, an insulating layer 704, and a The substrate 701 includes an edge layer 705, a substrate 711, an adhesive layer 713, and an insulating layer 715. and substrate 711 are bonded together with adhesive layer 360 .

[0342] The adhesive layer 597 adheres the substrate 590 to the touch sensor 595 so that the touch sensor 595 overlaps the display unit 501. It is attached to a plate 711. The adhesive layer 597 is light-transmitting.

[0343] The electrode 591 and the electrode 592 are formed using a light-transmitting conductive material. Conductive materials that can be used include indium oxide, indium tin oxide, and indium zinc oxide. Conductive oxides such as zinc oxide and zinc oxide doped with gallium can be used. A film containing graphene can also be used. The film containing graphene is, for example, in the form of a film. The graphene oxide film can be formed by reducing the graphene oxide film. Examples of the method include a method of applying heat.

[0344] In addition, conductive films such as electrodes 591, electrodes 592, and wiring 594, that is, a touch panel, are formed. It is desirable that the resistance value of the material used for the wiring and electrodes forming the semiconductor device is low. Tin oxide, indium zinc oxide, zinc oxide, silver, copper, aluminum, carbon nanotubes Furthermore, very thin (for example, a few nanometers in diameter) It is also possible to use metal nanowires made up of a large number of conductive materials. Because of its high transmittance, electrodes used in display elements, such as pixel electrodes and common electrodes, are often made of metal nanowires. Fiber, carbon nanotubes, graphene, etc. may also be used.

[0345] After forming a film of a light-transmitting conductive material on a substrate 590 by sputtering, By using various patterning techniques such as lithography, unnecessary parts are removed to form electrodes 59. 1 and electrode 592 can be formed.

[0346] The electrodes 591 and 592 are covered with an insulating layer 593. An opening is provided in the insulating layer 593 and a wiring 594 electrically connects adjacent electrodes 591 . The transparent conductive material can increase the aperture ratio of the touch panel, so that it is suitable for the wiring 594. In addition, a material having higher conductivity than the electrode 591 and the electrode 592 can be preferably used. Since the electrical resistance can be reduced, it can be suitably used for the wiring 594 .

[0347] Note that an insulating layer is provided to cover the insulating layer 593 and the wiring 594 to protect the touch sensor 595. It is possible.

[0348] Furthermore, the connection layer 599 electrically connects the wiring 598 and the FPC 509(2).

[0349] The display unit 501 has a plurality of pixels arranged in a matrix. Since they are similar, the explanation will be omitted.

[0350] Various transistors can be used in touch panels. The configuration when applying the capacitor is shown in FIGS. 28(A) and 28(B).

[0351] For example, a semiconductor layer containing an oxide semiconductor, amorphous silicon, or the like is formed as shown in FIG. The present invention can be applied to the transistors 302t and 303t.

[0352] For example, a semiconductor containing polycrystalline silicon crystallized by a process such as laser annealing. The layer is applied to the transistor 302t and the transistor 303t shown in FIG. This can be done.

[0353] FIG. 28C shows a structure in the case where a top-gate transistor is used.

[0354] For example, polycrystalline silicon or a single crystal silicon film transferred from a single crystal silicon substrate, etc. The semiconductor layer including the above is used as a transistor 302t and a transistor 303t shown in FIG. can be applied to.

[0355] [Configuration example 3] 29 is a cross-sectional view of touch panel 505B. The image information is displayed on the side where the transistor is provided. The touch sensor is provided on the substrate 701 side of the display unit, and the FPC 509(2) is The difference from the touch panel 505A in the configuration example 2 is that it is provided on the same side as the touch panel C509(1). Here, the different configurations are described in detail, and where similar configurations can be used, The above explanation is incorporated herein.

[0356] The colored layer 367R is located at a position overlapping the light emitting element 350R. The optical element 350R emits light toward the side where the transistor 302t is provided. A part of the light emitted by the light emitting element 350R passes through the colored layer 367R and is emitted in the direction of the arrow shown in the figure. The light is emitted to the outside of the light-emitting module 380R in the direction of the arrow.

[0357] The touch panel 505B has a light-shielding layer 367BM in the light-emitting direction. The 7BM is provided so as to surround a colored layer (for example, the colored layer 367R).

[0358] The touch sensor 595 is provided on the substrate 701 side, not on the substrate 711 side (see FIG. 29). (A)).

[0359] The adhesive layer 597 is formed by bonding the substrate 590 to the substrate 70 so that the touch sensor 595 overlaps the display unit. The adhesive layer 597 is attached to the substrate 1. The adhesive layer 597 is light-transmitting.

[0360] Note that a configuration in which a bottom gate transistor is applied to the display portion 501 is shown in FIG. Shown in (A) and (B).

[0361] For example, a semiconductor layer containing an oxide semiconductor, amorphous silicon, or the like is formed as shown in FIG. The present invention can be applied to the transistors 302t and 303t.

[0362] For example, a semiconductor layer containing polycrystalline silicon or the like is used as the transistor 302 shown in FIG. t and transistor 303t.

[0363] FIG. 29C shows a structure in which a top-gate transistor is used.

[0364] For example, a semiconductor layer including polycrystalline silicon or a transferred single-crystal silicon film is formed as shown in FIG. This can be applied to the transistor 302t and the transistor 303t shown in (C).

[0365] [Touch sensor configuration example] A more specific configuration example of the touch sensor 595 will be described below with reference to the drawings. do.

[0366] FIG. 30(A) shows a schematic top view of the touch sensor 595. The touch sensor 595 is On the plate 590, a plurality of electrodes 531, a plurality of electrodes 532, a plurality of wirings 541, a plurality of wirings 54 2. The substrate 590 also has a plurality of wirings 541 and a plurality of wirings 542 and an electric The FPC550 is provided for connecting to the target.

[0367] 30(B) shows an enlarged view of the area surrounded by the dashed line in FIG. 30(A). The electrode pattern has a shape in which multiple diamond-shaped electrode patterns are lined up in the horizontal direction of the paper. The diamond-shaped electrode patterns are electrically connected to each other. Similarly, the electrode 532 is A plurality of diamond-shaped electrode patterns are arranged in the vertical direction of the paper, and the diamond-shaped electrodes arranged in a row The electrode patterns are electrically connected to each other. Part of these overlaps and crosses each other. At this crossing part, electrodes 531 and 532 An insulator is sandwiched between the wires to prevent an electrical short circuit.

[0368] As shown in FIG. 30(C), the electrode 532 is connected to a plurality of diamond-shaped electrodes 533. , and the bridge electrode 534. The island-shaped electrode 533 is The two adjacent electrodes 533 are electrically connected by a bridge electrode 534. With this structure, the electrode 533 and the electrode 531 are formed using the same conductive film. By processing, they can be formed simultaneously. Therefore, the variation in the film thickness of these layers can be suppressed. This makes it possible to suppress variations in the resistance value and light transmittance of each electrode depending on the location. In this example, the electrode 532 has a bridge electrode 534. 1 may have such a configuration.

[0369] As shown in FIG. 30(D), the diamond-shaped electrodes 531 and 532 shown in FIG. 30(B) The inside of the electrode pattern may be hollowed out, leaving only the outline. In this case, if the width of the electrodes 531 and 532 is thin enough not to be visible to the user, As will be described later, the electrodes 531 and 532 may be made of a light-shielding material such as a metal or alloy. 30(D) is connected to the bridge electrode 534. The configuration may also include the following.

[0370] One electrode 531 is electrically connected to one wiring 541. 2 is electrically connected to one wiring 542.

[0371] Here, the touch sensor 595 is placed on the display surface of the display panel to form a touch panel. In this case, it is preferable to use a light-transmitting conductive material for the electrodes 531 and 532. In addition, a light-transmitting conductive material is used for the electrodes 531 and 532, and the light from the display panel is When the voltage is taken out through the electrode 531 or the electrode 532, the voltage between the electrode 531 and the electrode 532 is It is preferable to arrange a conductive film containing the same conductive material as a dummy pattern between them. In this way, a part of the gap between the electrode 531 and the electrode 532 is filled with a dummy pattern. As a result, the variation in light transmittance can be reduced. This can reduce uneven brightness of the light.

[0372] Examples of the light-transmitting conductive material include indium oxide, indium tin oxide, and indium tin oxide. Conductive oxides such as zinc oxide, zinc oxide, and zinc oxide doped with gallium are used. It is also possible to use a film containing graphene. For example, it can be formed by reducing a film containing graphene oxide formed in a film shape. As a method for this, a method of applying heat can be mentioned.

[0373] Alternatively, a metal or alloy thin enough to have light transmission properties can be used. , silver, platinum, magnesium, nickel, tungsten, chromium, molybdenum, iron, cobalt Metals such as titanium, copper, palladium, or titanium alloys containing such metals can be used. Alternatively, nitrides of the metals or alloys (for example, titanium nitride) may be used. Furthermore, a laminated film in which two or more conductive films containing the above-mentioned materials are laminated may be used.

[0374] In addition, the electrodes 531 and 532 are made thin enough to be invisible to the user. A conductive film may be used. For example, such a conductive film may be processed into a lattice (mesh) shape. This allows for high conductivity and high visibility of the display device. nm or more and 100 μm or less, preferably 50 nm or more and 50 μm or less, more preferably 50 nm or more and 100 μm or less It is preferable that the pattern has a width of 10 μm or more and 20 μm or less. A conductive film having a line width is preferable because it is extremely difficult for a user to visually recognize the conductive film.

[0375] As an example, FIGS. 31(A) to 31(D) show a part of the electrode 531 or the electrode 532 (FIG. 30 The enlarged schematic diagram of the area surrounded by the dashed-dotted circle in Figure 31(A) is shown. ) shows an example in which a lattice-shaped conductive film 561 is used. By arranging it so as not to overlap with the display element of the display device, light from the display device is blocked. In this case, the orientation of the grid is set to the same direction as the arrangement of the display elements, It is also preferable that the period of the grating is an integer multiple of the period of the array of display elements.

[0376] Also, in FIG. 31(B), a lattice-shaped conductive film is processed so that triangular openings are formed. 31(A) shows an example of 562. By adopting such a configuration, Therefore, it is possible to reduce the overall resistance.

[0377] Also, as shown in FIG. 31(C), a conductive film 56 having a pattern shape without periodicity 3. With this configuration, when the display unit of the display device is overlapped, moire is prevented. It should be noted that the moire pattern here refers to fine, evenly spaced conductive patterns. When external light passes through or is reflected by a conductive film, diffraction and interference occur. This refers to the interference pattern that occurs when

[0378] Alternatively, conductive nanowires may be used for the electrodes 531 and 532. ) shows an example in which a nanowire 564 is used. By distributing the particles at an appropriate density so that they come into contact with each other, a two-dimensional network is formed. For example, the average diameter of is 1 nm or more and 100 nm or less, preferably 5 nm or more and 50 nm or less, more preferably 5 nm or more and 50 nm or less The nanowire 564 may be a nanowire having a diameter of 25 nm or more. Metal nanowires such as Cu nanowires, Al nanowires, or carbon nanowires For example, Ag nanowires have a light transmittance of 8 9% or more, and a sheet resistance value of 40Ω / □ or more and 100Ω / □ or less can be achieved.

[0379] In FIG. 30(A) and the like, the top surfaces of the electrodes 531 and 532 are formed in a plurality of diamond shapes. The electrode 531 and the electrode 532 may have any shape other than the above. The upper surface may have various shapes, such as a strip shape (rectangular shape), a curved strip shape, a zigzag shape, etc. In the above example, the electrodes 531 and 532 are arranged so as to be perpendicular to each other. Although shown as being perpendicular to the two electrodes, they do not necessarily have to be arranged perpendicular to each other. The angle formed by these may be less than 90 degrees.

[0380] 32(A) to 32(C), instead of the electrodes 531 and 532, thin wire-shaped upper surfaces are used. 32(A) shows an example in which electrodes 536 and 537 having the same structure are used. 5 shows an example in which linear electrodes 536 and 537 are arranged in a lattice pattern. do.

[0381] In addition, in FIG. 32(B), the electrode 536 and the electrode 537 have a zigzag top surface. In this case, as shown in Figure 32(B), It is preferable to displace the electrodes relatively rather than overlapping them. The length of the portion where the electrode 536 and the electrode 537 face each other in parallel can be increased, and the capacitance between the electrodes can be increased. As shown in FIG. 32(C), The top surface shape of the electrode 536 and the electrode 537 is such that some of the straight lines of the zigzag top surface shape are protruding. If the shape is such that the center positions of the straight line parts are overlapped, the length of the opposing parts will be Since the length can be increased, the capacitance between the electrodes can be increased.

[0382] Enlarged views of the area enclosed by the dashed line in Figure 32(B) are shown in Figures 33(A), 33(B), and 33(C), respectively. Enlarged views of the areas enclosed by the dashed lines in Figure 2(C) are shown in Figures 33(D), 33(E), and 33(F), respectively. Each figure also shows an electrode 536, an electrode 537, and an intersection 538 where these electrodes intersect. As shown in Figures 33(B) and (E), the electrodes 536 and 537 in Figures 33(A) and 33(D) The straight portions of the electrodes 537 may have a meandering shape with corners, or the straight portions of the electrodes 537 may have a meandering shape with corners, as shown in FIG. As shown in (C) and (F), the shape may be a meandering shape with continuous curves.

[0383] The above is a description of an example of the configuration of the touch sensor.

[0384] For example, in this specification, a display element, a display device which is a device having a display element, a light-emitting device, A light-emitting device, which is a device having an element and a light-emitting element, can be used in various forms or in various The display element, the display device, the light-emitting element or the light-emitting device can have, for example, EL (electroluminescence) elements (EL elements containing organic and inorganic materials, organic EL elements) LEDs (white LEDs, red LEDs, green LEDs, blue LEDs, etc.) , transistors (transistors that emit light according to current), electron-emitting devices, liquid crystal devices, electrons Ink, electrophoretic element, grating light valve (GLV), plasma display (PDP), display element using MEMS (microelectromechanical systems) Digital Micromirror Device (DMD), DMS (Digital MicroShutter) MIRASOL (registered trademark), IMOD (Interference Modulation shutter-type MEMS display elements, optical interference-type MEMS display elements, Using electrowetting elements, piezoelectric ceramic displays, and carbon nanotubes In addition to these, it has at least one of an electric or magnetic action. The display medium may have a contrast, brightness, reflectance, transmittance, etc. that change depending on the An example of a display device using an EL element is an EL display. An example of a display device using the element is a field emission display (FED). or SED type flat panel display (SED: Surface-conduction LCDs are liquid crystal displays. An example of a display device is a liquid crystal display (transmissive liquid crystal display, semi-transmissive liquid crystal display). Spray, reflective LCD, direct-view LCD, projection LCD ) Display devices using electronic ink, electronic liquid powder (registered trademark), or electrophoretic elements An example of such a device is electronic paper. When realizing a liquid crystal display, part or all of the pixel electrodes are used as reflective electrodes. For example, a part or the whole of the pixel electrode may be made of aluminum. In this case, the reflective electrode may have a SR It is also possible to provide a memory circuit such as AM. This will further reduce power consumption. When using an LED, a glass substrate is placed under the LED electrode and nitride semiconductor. Graphene or graphite can be placed on top of each other. In this way, by providing graphene or graphite, On top of that, nitride semiconductors, such as n-type GaN semiconductor layers with crystals, can be easily formed. Furthermore, a p-type GaN semiconductor layer having crystals can be formed on the L ED can be constructed. In addition, graphene and graphite can be used with n-type G with crystals. An AlN layer may be provided between the GaN semiconductor layer and the GaN semiconductor layer. However, the graphene layer can be formed by MOCVD. The GaN semiconductor layer can also be formed by sputtering.

[0385] For example, in this specification, an active matrix type having active elements in pixels, or Alternatively, a passive matrix system in which pixels do not have active elements can be used.

[0386] In the active matrix system, the active element (active element, nonlinear element) is a transistor. By using not only transistors but also various active elements (active elements, nonlinear elements), For example, MIM (Metal Insulator Metal) or T It is also possible to use FD (Thin Film Diode) and other elements. Since the number of manufacturing steps is small, it is possible to reduce manufacturing costs and improve yields. Alternatively, these elements can improve the aperture ratio due to their small size. This makes it possible to achieve low power consumption and high brightness.

[0387] Other than the active matrix type, active elements (active elements, nonlinear elements) It is also possible to use a passive matrix type that does not use active elements (active elements). Since it does not use any nonlinear elements, there are fewer manufacturing steps, which reduces manufacturing costs and improves yield. Alternatively, active elements (active elements, non-linear elements) can be used. Since the aperture ratio is not increased, it is possible to achieve low power consumption or high brightness. This can be done.

[0388] In this specification, examples of various displays using a display panel have been shown. However, one aspect of the present invention is not limited to this. For example, the information may not be displayed. For example, the display panel may be used as a lighting device instead of a display panel. By using it, it can be used as an interior with excellent design. It can be used as a light that can illuminate in various directions. Instead of a panel, it may be used as a light source for a backlight or a frontlight. , and may be utilized as a lighting device for a display panel.

[0389] This embodiment may be combined, at least in part, with other embodiments described in this specification. It can be implemented in combination.

[0390] (Embodiment 5) Hereinafter, a power supply system capable of supplying power to a battery included in a display unit or the like according to one embodiment of the present invention will be described. This section explains the system.

[0391] In one aspect of the present invention, the battery is in contact with a power supply source (hereinafter also referred to as a power transmission device). When the device is not connected, power is supplied to the target device (hereinafter also referred to as the power receiving device) (disconnected Power may be supplied by a non-contact power supply method (also called contact power supply or wireless power supply). Examples of such methods include magnetic field resonance, electromagnetic induction, and electrostatic induction.

[0392] In this embodiment, a power supply system in which power is supplied by a magnetic resonance method will be described as an example. The magnetic resonance method uses resonant coils provided on both the power transmitting device and the power receiving device to form a resonator. This is a method of forming an energy transmission path by connecting the power It has a longer power supply distance compared to magnetic induction methods, electrostatic induction methods, etc.

[0393] Here, the input impedance of the power receiving device changes depending on the charging state of the battery. In other words, the input impedance of the power receiving device changes dynamically during power supply. In this case, if the output impedance of the power transmission device is constant, the impedance Therefore, in the case of power supply using the magnetic resonance method, It can be difficult to maintain a high level of power supply efficiency throughout the entire power cycle.

[0394] Therefore, the power receiving device of this embodiment is provided with a voltage ( The former voltage) and the latter voltage) that is proportional to the current input from the outside are detected, and Based on these, a DC-DC converter with a configuration that keeps the ratio of the former voltage to the latter voltage constant is constructed. Apply the data.

[0395] Specifically, the DC-DC converter included in the power receiving device of this embodiment converts the input voltage ( The first voltage is proportional to the DC voltage of the load (i.e., the input current) and the second voltage is proportional to the input current (i.e., the current across the load). By keeping the ratio of the voltage to the Furthermore, in the DC-DC converter, impedance conversion is performed. Therefore, the battery to be powered is connected to the output side of the DC-DC converter. Even if present, the DC-DC It is possible to maintain the input impedance of the converter. In this case, power is supplied by magnetic resonance to a power receiving device having a C converter and the battery. Therefore, it is possible to maintain a high power supply efficiency throughout the power supply period.

[0396] [Power supply system] FIG. 34(A) shows an example of the configuration of a power supply system in which power is supplied by the magnetic field resonance method. The power supply system shown in FIG. 34(A) includes a power transmitting device 400 and a power receiving device 3 shown in FIG. 34(B). 30. The power transmitting device 400 further includes a high frequency power supply 401 that generates a high frequency voltage. 4, a coil 402 to which a high-frequency voltage generated by a high-frequency power supply 401 is applied, and a coil The resonant coil 403 induces a high frequency voltage by electromagnetic induction with the resonant coil 402. In the resonant coil 403, there is a stray capacitance 404 between the wirings that make up the resonant coil 403. As shown in FIG. 34(A), the resonance coil 403 is not directly connected to other components. It is preferable to have a configuration in which the power supply is not connected.

[0397] [Power receiving device] FIG. 34(B) shows an example of the configuration of a power receiving device that receives power by the magnetic resonance method. The power receiving device 330 shown in FIG. 4(B) is a resonant coil in which a high frequency voltage is induced by magnetic field resonance. 331 and a coil 332 in which a high frequency voltage is induced by electromagnetic induction with the resonant coil 331. a rectifier circuit 333 for rectifying the high frequency voltage induced in the coil 332; a DC-DC converter 334 to which a DC voltage output from the DC-DC converter The resonant capacitor 335 has a DC voltage output from the resonant capacitor 335. In the coil 331, there exists a stray capacitance 336 between the wirings that constitute the resonance coil 331.

[0398] As shown in FIG. 34(B), the resonance coil 331 is not directly connected to other components. It is preferable to have a configuration in which other components are not directly connected to the resonance coil 331. In this case, the series resistance and capacitance of the resonant coil 331 become large. The Q value of the circuit including the resonant coil 331 and other components is The Q value of the circuit is lower than that of the resonant coil 331. is higher in power supply efficiency than in a configuration in which the resonant coil 331 is not directly connected to other components. This is because the amount of

[0399] The DC-DC converter 334 is a D type that can maintain a constant input impedance. Furthermore, the input impedance of the DC-DC converter 334 is does not depend on the impedance of the battery 335 present on the output side. Impedance conversion is performed by the DC-DC converter 334. The input impedance of the DC-DC converter 334 is the input impedance of the power receiving device 330. Therefore, the impedance of the battery 335 is changed depending on the charging state of the battery 335. Even if the impedance changes, the input impedance of the power receiving device 330 will not change. As a result, the power receiving device 330 does not depend on the charging state of the battery 335. Therefore, it is possible to supply power with high power supply efficiency.

[0400] In the power supply system shown in FIG. 34(A), the power receiving device is the power receiving device shown in FIG. Therefore, in the power supply system shown in FIG. It is possible to supply power without considering the fluctuation of input impedance in the In the power supply system shown in FIG. 34(A), power supply is performed without dynamically changing the power supply conditions. Highly efficient power supply is possible.

[0401] Next, an example of a configuration of a DC-DC converter that can be used as the DC-DC converter 334 will be described. Show.

[0402] [DC-DC converter configuration example] FIG. 35(A) is a diagram showing a configuration example of a DC-DC converter. The DC-DC converter includes an input power detection unit 1000 to which a DC voltage (V_In) is input. a voltage conversion unit 20 that converts the DC voltage (V_In) into a DC voltage (V_Out) and outputs the converted voltage; 00 and

[0403] 35(B) and (C) show examples of the configuration of the input power detection unit 1000 shown in FIG. 35(A). The input power detection unit 1000 shown in FIG. 35(B) has one end connected to the high potential side input node. a load 1003, the other end of which is electrically connected to the voltage conversion unit 2000; , a means 1001 for detecting a voltage (V_1001) proportional to a DC voltage (V_In); A method for detecting a voltage (V_1002) proportional to a current (I_1003) generated in a load 1003. The voltage (V_1001) detected by the means 1001 and the stage 1002 are The voltage (V_1002) detected by the means 1002 is input to the voltage conversion unit 2000. Furthermore, the input power detection unit 1000 shown in FIG. 35(C) detects that one end of the load 1003 is low. The input power detection unit shown in FIG. 35(B) except that it is electrically connected to the potential side input node. 35B and 35C, in one embodiment of the present invention, In this case, the load 1003 of the input power detection unit 1000 is connected to a high-potential input node or a low-potential input node. The input node is provided so as to be electrically connected to one of the input nodes on the side of the output terminal.

[0404] FIG. 35(D) is a diagram showing an example of the configuration of the voltage conversion unit 2000 shown in FIG. 35(A). The voltage conversion unit 2000 shown in FIG. 35(D) converts the voltage generated in the load 1003 in response to switching. A switch 2002 controls the current, and a voltage (V_1001) and a voltage (V_1002) are controlled based on the voltage. and means 2001 for controlling the switching of a switch 2002 based on the detected voltage.

[0405] The voltage conversion unit 2000 shown in FIG. 35(D) may be of a boost type, a flyback type, a reverse type, or a reverse type. A circuit having a voltage conversion circuit such as a converter and a means 2001 is applied, and the voltage conversion circuit The included switch can be applied as switch 2002 .

[0406] In the DC-DC converter shown in FIG. 35(A), the input voltage (input DC voltage Even if the input current (current (I_1 By controlling the input impedance, it is possible to keep the input impedance constant. Specifically, in the DC-DC converter shown in FIGS. 35(A) to 35(D), the load 1003 The current (I_1003) generated in the The switching of the switch 2002 is controlled by the means 2001. Here, the means 2001 detects the voltage (V_1001) detected by the means 1001. ) and the voltage (V_1002) detected by the means 1002, the switch 200 2. That is, the means 2001 controls the switching of the voltage (V _1001) and a voltage (V_1002) proportional to the input current. Therefore, the DC-DC converter shown in Figs. 35(A) to (D) controls the switching of In the inverter, a voltage (V_ The input impedance is controlled by designing the ratio of the input voltage (V_1001) to the input voltage (V_1002) to be kept constant. It is possible to keep the impedance constant.

[0407] [Example of a DC-DC converter] FIG. 36(A) is a diagram showing an example of a DC-DC converter. The C-DC converter includes a load 4, one end of which is electrically connected to the high-potential input node, and A switch 5 having one end electrically connected to the other end of the load 4 and a resistor 11 having one end electrically connected to the other end of the switch 5 an inductor 6 electrically connected to the high-potential side output node; , one end of which is electrically connected to the other end of the switch 5 and one end of the inductor 6, and the other end of which is connected to the low potential side It is electrically connected to the input node and the low-potential output node (hereinafter referred to as grounded). The load 4 may be a resistive load or an inductive load. The switches 5 and 7 may be transistors or relays. The inductor 6 may be an air-core coil or a cored coil. A coil or the like can be applied.

[0408] Furthermore, the DC-DC converter shown in FIG. 36(A) is ) and a means 1 for detecting a voltage (V_1) proportional to the current (I_4) generated in the load 4. A means 2 for detecting a proportional voltage (V_2), and a means 3 for detecting a voltage (V_1) based on the voltage (V_2) By controlling the switching of switch 5, the ratio of voltage (V_1) to voltage (V_2) is The voltage is kept constant, and the switch 7 is turned off during the period when the switch 5 is turned on. and means 3 for turning on switch 7 during the period when switch 5 is in the off state. Has.

[0409] In the DC-DC converter shown in FIG. 36(A), during the period when the switch 5 is in the OFF state, The current (I_4) generated in the load 4 becomes 0. Then, the switch 5 changes from the OFF state to the ON state. The current (I_4) generated in load 4 increases over time during the period after the change to the This is due to the self-induction of the inductor 6, and the load increases over time. The average value of the current (I_4) generated in load 4 will eventually converge to a constant value. In the DC-DC converter shown in A), the switching of the switch 5 is controlled. It is possible to control the amount of current output.

[0410] In the DC-DC converter shown in FIG. 36(A), the switching of the switch 5 by the means 3 is The switching is detected by the voltage (V_1) detected by the means 1 and the voltage (V_2) detected by the means 2. Here, the means 1 is controlled based on the input voltage (the voltage of the input node The means 2 detects a voltage proportional to the input current (current generated in the load 4). Therefore, means 3 detects the voltage (V_1) and the voltage (V By controlling the switching of switch 5 so as to keep the ratio of _2 constant, the It is possible to keep the input impedance of the DC-DC converter shown in A constant. do.

[0411] In the DC-DC converter shown in FIG. 36(A), the switch 7 is Specifically, when the switch 5 changes from the ON state to the OFF state, When the current changes to , the current continues to flow in inductor 6 due to the self-induction of inductor 6. If the switch 7 is not provided, the switch 5 When the state changes from the on state to the off state, the other end of the switch 5 and one end of the inductor 6 are charged. There is a possibility that the potential of the electrically connected node may suddenly rise or fall. In this case, a high voltage is applied to the switch 5. As a result, the switch 5 is destroyed. On the other hand, in the DC-DC converter shown in FIG. By turning on the switch 7, a path for the current generated in the inductor 6 can be secured. In other words, it is possible to prevent the switch 5 from being destroyed.

[0412] [Specific example of method 1] As means 1, the circuit shown in FIG. 36(B) can be applied. The circuit shown in FIG. 1 includes a resistor 13 electrically connected to the high-potential side input node at one end and a resistor 14 electrically connected to the high-potential side input node at the other end. and a resistor 14 electrically connected to the other end of the resistor 13 and having the other end grounded. The potential of the node where the other end of the resistor 13 and one end of the resistor 14 are electrically connected is input to the means 3. That is, the circuit shown in FIG. 36(B) uses a resistor voltage divider to divide the input voltage (V_In) a circuit for detecting a voltage (V_1) proportional to the voltage (V_1) and outputting the voltage (V_1) to the means 3; is.

[0413] [Specific example of method 2] As means 2, the circuit shown in FIG. 36(C) can be applied. The circuit shown in Figure 1 receives the voltage at one end of the load 4 as a non-inverting input signal and The instrumentation amplifier 22 receives the voltage at the other end of the load 4. The voltage proportional to the difference between the voltage input to the input terminal and the voltage input to the inverting input terminal is obtained. That is, the instrumentation amplifier 22 outputs the voltage applied across the load 4 to the stage 3. The voltage applied across the load 4 is a negative voltage. Since the load current (I_4) is proportional to the current (I_4) across the load 4, the instrumentation amplifier 22 I_4) to the means 3. The circuit shown in Figure 2 generates a voltage proportional to the current (I_4) generated in load 4 by instrumentation amplifier 22. This is a circuit that detects the voltage (V_2) and outputs the voltage (V_2) to the means 3.

[0414] [Specific example of method 3] As means 3, the circuit shown in FIG. 36(D) can be applied. The circuit shown in FIG. 1 receives the voltage (V_2) detected by the means 2 as a non-inverting input signal. The voltage (V_1) detected by the means 1 is input as an inverted input signal. A triangular wave oscillator 37 is connected to a non-inverting input signal. The voltage output by the error amplifier 36 is input as an inverted input signal. The voltage output by the comparator 38 is input to the comparator 3 Controls the switching of switch 5 by outputting a voltage in phase with the voltage output by 8. The buffer 39 outputs a voltage that is in the opposite phase to the voltage output by the comparator 38. The comparator 38 has an inverter 49 for controlling the switching of the switch 7. The switching of the switch 5 is directly controlled by the output voltage (see the procedure shown in FIG. 36(D)). (eliminating buffer 39 from stage 3).

[0415] The error amplifier 36 detects the voltage input to the non-inverting input terminal and the voltage input to the inverting input terminal. That is, the error amplifier 36 amplifies and outputs the difference between the voltage (V_2) and the voltage The difference between (V_1) is amplified and output.

[0416] The comparator 38 detects the voltage input to the non-inverting input terminal and the voltage input to the inverting input terminal. Specifically, the error amplifier 36 compares the voltage output with the When the voltage is lower than the triangular wave, a high-level voltage is output. In other words, the lower the voltage output by the error amplifier 36, The duty ratio of the output signal of the comparator 38 becomes large. The amount of current output from the DC-DC converter is determined according to the ratio. In other words, if the duty ratio is large, the current output from the DC-DC converter (load The current (I_4) generated in 4 also increases. The lower the voltage, the larger the current (I_4) generated in load 4.

[0417] Here, the voltage output by the error amplifier 36 is the input voltage (V _In) and the current ( It varies depending on the voltage (V_2) proportional to the input voltage (V_In). When the input voltage Vin increases, the voltage output by the error amplifier 36 decreases. When (V_In) becomes high, the duty cycle at the output of the comparator 38 becomes large. Therefore, in the circuit shown in FIG. 36(D), when the input voltage (V_In) becomes high, Since the duty ratio of the output signal of the comparator 38 becomes large, The current (I_4) also increases. In short, in the circuit shown in Figure 36(D), the input voltage The value of the current (I_4) generated in load 4 can be changed in accordance with the change in the value of (V_In). Therefore, in the circuit shown in FIG. 36(D), it is possible to adjust the design conditions. The voltage (V_1) proportional to the input voltage detected by the means 1 and the voltage (V_2) proportional to the input voltage detected by the means 2 are The ratio of the voltage (V_2) proportional to the current generated in the load 4 detected by the load current sensor is kept constant. It is possible to do this.

[0418] The DC-DC converter shown in FIG. 37(A) is similar to the DC-DC converter shown in FIG. 36(A). The switch 7 in the inverter is replaced with a diode 8. The DC-DC converter has the same action and effect as the DC-DC converter shown in FIG. 36(A). To bear fruit.

[0419] In the DC-DC converter shown in FIG. 37(A), the first means is ) can be applied, and the circuit shown in FIG. 36(C) can be applied as a means 2. As a third means, the circuit shown in FIG. 37(B) can be applied. In short, the circuit shown in FIG. 37(B) is different from the circuit shown in FIG. 36(D). The inverter 49 is removed from the configuration.

[0420] 37(C), the DC-DC converter shown in FIG. 36(A) is 7(A) and the anode of the diode 8 connected to the other end of the switch 5, one end of the inductor 6, The cathode of the diode 8 is electrically connected to one end of the switch 7 and the cathode of the load 4. The other end of the DC-D converter is electrically connected to one end of the switch 5. It is also possible to apply a C converter. This will enhance the effect of suppressing the breakdown of the switch 5. It becomes possible to do this.

[0421] Also, only diode 8 or both diodes are connected to the DC-DC converter shown in FIG. 37(C). A DC-DC converter with only Code 9 removed can be applied to DC-DC converter 334. It is also possible.

[0422] This embodiment may be combined, at least in part, with other embodiments described in this specification. It can be implemented in combination.

[0423] (Embodiment 6) Hereinafter, a display panel, a display device, a display unit, or a display system according to one embodiment of the present invention will be described. An application example of this will be explained.

[0424] The above explains how to create a display area along the outer or inner curved surface of a cylinder. However, the present invention is not limited to this and can be applied to various three-dimensional objects. The display area is on the side of a column with an ellipse, a hexagon with rounded corners, and a triangle with rounded corners as the base, respectively. FIG. 38(D) shows an example in which a rectangular shape with rounded corners is formed as the bottom surface. FIG. 38(E) shows an example in which a display area 40 is formed on the side of the cone. do.

[0425] 39(A) to 39(C) show examples in which the display area 40 is formed on a part of clothing. 39(A) is an example of a button-down shirt, and by fastening the buttons, the display The seams of the area can be eliminated. Figure 39(B) shows an example of applying this to a polo shirt. A continuous image can be displayed from the front to the back of the polo shirt. (C) is an example of application to the neck and cuffs of a cut-and-sew garment.

[0426] The clothing that forms the display area 40 is not limited, and may be, for example, a shirt, a blouse, etc. This includes tops, pants, skirts, and other bottoms, as well as dresses and jumpsuits. It may also be applied to mufflers, scarves, neckties, etc.

[0427] In addition, when the display area 40 is detachably attached to the clothes, it is possible to wash only the clothes. This prevents the display area 40 from being damaged by washing. If the area 40 is a washable device, remove the display area 40 from the garment. It can be washed without any mess.

[0428] FIG. 40(A) shows an example in which a display area is formed on a pillar 41 or a curved wall 42. By using a flexible display panel as the display panel used in the display area, it is possible to display images on a curved surface. It is possible to arrange the display area along the

[0429] FIG. 40(B) shows an amusement facility 43 having display areas 40 arranged in a circular pattern. A view from above. Audience 45 is surrounded by a display area 40. From the entrance 46, you can enjoy a 360-degree view of the image. Images can also be displayed on the surface, enhancing the sense of realism.

[0430] The display area 40 illustrated in this embodiment is provided with a display panel 100 according to an embodiment of the present invention, a display device At least one of the display device 30, the display unit 20, and the display system 10 is applied. It is possible.

[0431] This embodiment may be combined, at least in part, with other embodiments described in this specification. It can be implemented in combination. [Example]

[0432] In this example, a display device having a ring-shaped display region according to one embodiment of the present invention was manufactured.

[0433] The display panel used in the display device fabricated in this example was fabricated by the following method. A tungsten film is formed on a glass substrate as a peeling layer, and an insulating layer and a transistor are formed on the peeling layer. A peeled layer including a photodiode, a light-emitting element, etc. was formed on a glass substrate. Then, a peeled layer including an insulating layer, a colored layer, a light-shielding layer, etc. was formed on the peeling layer. These two substrates were bonded together with an adhesive. The glass substrate and the peelable layer are separated, and a flexible substrate is attached to the peelable layer using an adhesive. The display panel was fabricated by combining the two.

[0434] The transistor has a channel formed in the semiconductor layer, which is covered with CAAC-OS (C Axis Aligned Crystalline Oxide Semiconductor Unlike amorphous materials, CAAC-OS has few defect levels. In addition, the grain boundaries of the CAAC-OS are This allows for the formation of a stable and uniform film over a large area. In addition, when a flexible display panel is bent, stress is applied to the CAAC-OS film. Lacking is unlikely to occur.

[0435] 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 a nanoscale microcrystalline aggregate. There are various structures that are different from single crystals, such as nano-crystals (nc). It has been confirmed that CAAC-OS has lower crystallinity than single crystals and higher crystallinity than nc. expensive.

[0436] In this example, a channel-etched transistor using an In-Ga-Zn oxide was used. The transistor was fabricated on a glass substrate at a temperature of less than 500°C.

[0437] The light-emitting element used was a tandem (stacked) organic EL element that emits white light. The device has a top-emission structure, and light from the light-emitting element is emitted to the display panel through a color filter. It is taken out of the box.

[0438] The display panel we created has a diagonal size of 13.5 inches and a pixel count of 1280 x 7. 20, pixel size 234μm x 234μm, resolution 108ppi, aperture ratio 61.1 The frame frequency is 60Hz, and the scan driver is built-in. The driver was mounted using the COF method. The thickness of the manufactured display panel was less than 100 μm. Ta.

[0439] The manufactured display panel is fixed to the inside or outside of a cylindrical plastic support member. By this method, two types of display devices with annular display areas were fabricated.

[0440] In FIG. 41(A), three display panels (display panel 100a, Photographs of a display device fabricated by bonding 100b and 100c are shown in Figure 41(A). 41(B) is a photograph of the display device as seen from above. It's a great photo.

[0441] A plurality of FPCs 104 are attached to one display panel 100. is connected to the drive unit. The FPC 104 is attached to the long side of the display panel.

[0442] FIG. 41(A) shows a diagonal stripe image displayed on each of three display panels. This is a photo of the display when the curved surface of the cylinder is displayed in sync. It is possible to display a seamless circular image along the surface.

[0443] Each display panel 100 has a region 110 adjacent to the display region that transmits visible light. In the area where two display panels overlap, the display panel located on the display surface side The area 110 of the display panel overlaps with the display area of ​​the display panel arranged on the opposite side of the display surface. In FIG. 41(B), the area 110a of the display panel 100a is the display area of ​​the display panel 100b. The area shown is a portion overlapping with a part of the area 101b. However, the image is displayed in a continuous manner without any interruptions.

[0444] FIG. 41(C) shows a display panel in which one display panel 100 is fixed to the outside of a cylindrical support member. A photograph of the device is shown.

[0445] In FIG. 41C, the region 110 of the display panel 100 that transmits visible light is referred to as the display region 10 It is placed overlapping part of 1.

[0446] Figure 41(C) shows a photograph when a vertical stripe image is displayed. The display device displays a seamless circular image along the outer curved surface of the cylinder. It has been made.

[0447] As described above, the display device of one embodiment of the present invention is provided adjacent to the display area of ​​the display panel. The area that transmits visible light is placed on one or more display panels so that it overlaps with part of the display area. It was confirmed that by arranging the panels in a ring, it is possible to display a seamless circular image. [Explanation of symbols]

[0448] 1 means 2 means 3 means 4. Load 5 Switch 6 Inductors 7 Switch 8. Diodes 9. Diodes 10 Display System 13 Resistance 14 Resistance 20 Display Unit 20a~h Display unit 22 Instrumentation Amplifier 30 Display device 31 Display area 36 Error amplifier 37 Triangular Wave Oscillator 38 Comparator 39 buffers 40 display area 41 pillars 42 Wall 43 Amusement facilities 44 Stages 45 Audience 46 Entrance / Exit 49 Inverter 50 Display device 51 Display area 100 Display Panel 100a~l display panel 101 Display area 101a~d Display area 102 Drive circuit 102a~d Drive circuit 103 Wiring 103a~d Wiring 104 FPC 104a FPC 104b FPC 110 areas 110a area 110b area 111 Substrate 112 PCB 120 areas 120a area 130 Support 131 Mechanism 132 Drive unit 133 Power receiving device 134 Protective materials 135 Space 151 frames 151a Arm 151b Legs 151c Shaft 151d Notch 152 Output Device 153 Storage device 154 External storage device 155 Internet 156 servers 200 Display Panel 200a~d Display panel 201 Display area 201a~d Display area 210 areas 210a~d area 212 FPC 212a FPC 212b FPC 220 areas 220a~d area 223 FPC 231 Resin layer 232 Protection Board 233 Resin layer 234 Protection Board 235 Protection Board 236 Protection Board 241 pixels 241a pixel 241b pixels 242a wiring 242b wiring 243a circuit 243b circuit 245 Wiring 251 PCB 252 boards 253 Adhesive layer 270 areas 301 Display section 302 pixels 302B subpixel 302G subpixel 302R subpixel 302t transistor 303c capacity 303g(1) Scanning line driver circuit 303g(2) Imaging pixel drive circuit 303s(1) Image signal line driver circuit 303s(2) Image signal line driver circuit 303t transistor Gate 304 308 imaging pixels 308p photoelectric conversion element 308t transistor 309 FPC 311 Wiring 319 terminal 321 Insulating Layer 328 Bulkhead 329 Spacer 330 Power receiving device 331 Resonant Coil 332 Coil 333 Rectifier circuit 334 DC-DC converter 335 Battery 336 Stray Capacitance 350R light emitting element 351R lower electrode 352 Upper electrode 353 EL layer 353a EL layer 353b EL layer 354 Middle Class 360 adhesive layer 367BM light shielding layer 367p anti-reflection layer 367R colored layer 380B Light Emitting Module 380G light emitting module 380R Light Emitting Module 390 Touch Panel 400 Power Transmission Equipment 401 High frequency power supply 402 Coil 403 Resonance Coil 404 Stray Capacitance 501 Display section 505A Touch Panel 505B Touch Panel 509 FPC 531 Electrode 532 Electrode 533 Electrode 534 Bridge Electrode 536 Electrode 537 Electrode 538 Intersection 541 Wiring 542 Wiring 550 FPC 561 Conductive film 562 Conductive film 563 Conductive Film 564 Nanowires 590 PCB 591 Electrode 592 Electrode 593 Insulating Layer 594 Wiring 595 Touch Sensor 597 Adhesive layer 598 Wiring 599 Connection Layer 701 PCB 703 Adhesive layer 705 Insulation Layer 711 Circuit Board 713 Adhesive layer 715 Insulation Layer 723 Adhesive layer 804 Display section 806 Operation circuit section 808 FPC 810 area 815 Insulation layer 816 Insulating layer 817 Insulation layer 817a Insulating layer 817b Insulating layer 820 transistors 821 Insulation layer 822 Adhesive layer 825 Connector 830 Light-emitting element 831 Lower electrode 833 EL layer 835 Upper electrode 845 Colored layer 847 Light blocking layer 857 Conductive layer 860 Liquid crystal element 861 Polarizing Plate 862 Polarizing Plate 863 Backlight 871 Electrode 872 LCD 873 Electrode 1000 Input power detection section 1001 means 1002 means 1003 Load 2000 Voltage conversion unit 2001 means 2002 Switch

Claims

[Claim 1] A display device having a display panel, the display panel has a first portion and a second portion and is flexible; the first portion has a function of displaying an image; the second portion has a function of transmitting visible light, the display panel is bent so that the second portion and the first portion overlap each other; Display device.

Images