Display device

Abstract

To provide a display system which makes a joint of display regions made of a plurality of display panels hard to be visually recognized by an image processing device, or which has the wide display regions whose joint is hard to be visually recognized.SOLUTION: A display system including a display device and an image processing device is provided. The display device includes a second display panel overlapping with a first display panel on the display surface side. The second display panel has a region that transmits visible light adjacent to a display region. The region that transmits visible light of the second display panel overlaps with a display region of the first display panel, which makes a non-display region between display regions of two display panels in the display device small. The image processing device has a function of correcting the gray scale, which is included in image data, corresponding to at least one of a portion overlapping with the region that transmits visible light and a portion not overlapping with the region in the display region of the first display panel.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

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

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

[0004] In addition, there is a demand for larger display devices for mobile device applications. It is being considered to increase the amount of information that can be displayed at one time and improve viewability by doing so.

[0005] Electroluminescence (hereinafter referred to as EL) Light-emitting elements (also called EL elements) that utilize the phenomenon of light emission can be easily made thin and lightweight. It has features such as being able to respond quickly to signals and being able to be driven by a low-voltage DC power supply. The application of organic EL elements to display devices is being considered. For example, one example of a display device using organic EL elements is and is disclosed in Patent Document 1.

[0006] In addition, Patent Document 2 discloses a film substrate on which transistors and semiconductor devices as switching elements are mounted. A flexible active matrix type light emitting device having an organic EL element is disclosed. . [Prior art documents] [Patent documents]

[0007] [Patent Document 1] JP 2002-324673 A [Patent Document 2] JP 2003-174153 A Summary of the Invention [Problem to be solved by the invention]

[0008] An object of one embodiment of the present invention is to increase the size of a display device. Another object of the present invention is to suppress unevenness in display or unevenness in brightness of a display device. Another object of the present invention is to reduce the thickness or weight of a display device. Another object of the present invention is to provide a display device capable of displaying images according to the above. An object of one embodiment of the present invention is to provide a display device with excellent viewability. One aspect of the present invention is to provide a display device having a wide display area in which seams are less visible. This is one of our goals.

[0009] Another aspect of the present invention is to provide a novel image processing device, a display system, or an electronic device. Another object of the present invention is to provide a display device including a plurality of display panels. The present invention aims to provide an image processing device capable of making a seam between display areas less visible. This is the target.

[0010] The description of these problems does not preclude the existence of other problems. It is not necessary for the embodiment to solve all of these problems. It is possible to extract problems other than those mentioned above from the description of the claim. [Means for solving the problem]

[0011] One aspect of the present invention is an image processing device that supplies an image signal to a display device, the image processing device having a calculation unit. The calculation unit is supplied with the first image signal and the correction information, and the calculation unit corrects the first image signal. The calculation unit has a function of generating a second image signal by performing correction based on the positive information, and The display device has a function of supplying two image signals to the first display panel and the second display panel. The first display panel has a first region, and the first region displays The second display panel has a second region and a third region, and the second region has The third region has a function of displaying, and is adjacent to the second region and has a function of transmitting visible light. The first region has a first portion that overlaps with the third region on the display side, and the second region has a second portion that overlaps with the third region on the display side. The image signal is a signal whose gradation corresponding to the first portion is corrected. .

[0012] Another aspect of the present invention is an image processing device that supplies an image signal to a display device, the image processing device comprising: The calculation unit is supplied with a first image signal and correction information, and the calculation unit calculates the first image signal. A function of generating a second image signal by correcting the signal based on the correction information, The display device includes a first display panel, a second display panel, and a second image signal. and a second display panel, the first display panel having a first region, the first region comprising: The second display panel has a function of displaying a second image. The second display panel has a second region and a third region. The region has a function of displaying, and the third region is adjacent to the second region and transmits visible light. The first region has a first portion that overlaps with the third region on the display side. The second image signal includes at least one of the first region and the second region excluding the first portion. The image processing device is a signal in which the gradation corresponding to the portion is corrected.

[0013] Alternatively, one embodiment of the present invention includes a display device and an image processing device, the display device including a first display a first display panel and a second display panel, the first display panel having a first region, the first display panel has a second region and a third region; The second region has a function of displaying, and the third region is adjacent to the second region and has a function of displaying. The first region has a function of transmitting light, and the first region overlaps with the third region on the display surface side. The image processing device has a calculation unit, and the calculation unit receives the first image signal and the correction information. The calculation unit corrects the first image signal based on the correction information to generate a second image. the calculation unit has a function of generating a second image signal, and the calculation unit has a function of supplying the second image signal to the display device. , the second image signal is a signal whose gradation corresponding to the first portion is corrected, It is.

[0014] Alternatively, one embodiment of the present invention includes a display device and an image processing device, the display device including a first display a first display panel and a second display panel, the first display panel having a first region, the first display panel has a second region and a third region; The second region has a function of displaying, and the third region is adjacent to the second region and has a function of displaying. The first region has a function of transmitting light, and the first region overlaps with the third region on the display surface side. The image processing device has a calculation unit, and the calculation unit receives the first image signal and the correction information. The calculation unit corrects the first image signal based on the correction information to generate a second image. the calculation unit has a function of generating a second image signal, and the calculation unit has a function of supplying the second image signal to the display device. The second image signal is a signal representing at least a part of the first region and the second region excluding the first portion. is a corrected signal corresponding to the gray scale.

[0015] The display system of each of the above configurations includes a detection device, and the detection device obtains luminance information of the display device. and a function of supplying the luminance information to the image processing device.

[0016] The display device of the display system having the above configuration may have a light-transmitting layer. The average light transmittance in the wavelength range of 450 nm to 700 nm is 80% or more. and the refractive index is higher than that of air, and the first display panel and the second display panel are preferably disposed between the first display panel and the second display panel. Further, the light-transmitting layer is located on the display surface side of the first display panel and on the display surface side of the second display panel. The first portion is located on a surface side facing the display surface of the display panel. The second region has an overlapping portion with the third region.

[0017] The display device of the display system having the above configuration may be flexible. At least one of the display panels of the display device needs to be flexible, and all of the display panels need not be flexible. It may have a property of

[0018] In each of the above configurations, the image processing device has a storage unit to which correction information is supplied. It is preferable that the storage section has a function of supplying the correction information to the calculation section.

[0019] In each of the above configurations, the second image signal may be a signal that has been subjected to gamma correction.

[0020] Further, an electronic device or a lighting device using the display system having any of the above configurations is also an aspect of the present invention. For example, one aspect of the present invention is a display system having any of the above configurations, a sensor, a battery, a housing, a speaker, a microphone, an operation switch, or an operation button, , electronic devices. Effect of the Invention

[0021] According to one embodiment of the present invention, a display device can be made larger. In this case, unevenness in display or unevenness in brightness of the display device can be suppressed. As a result, the display device can be made thinner or lighter. It is possible to provide a display device capable of displaying images along a curved surface. According to one embodiment of the present invention, a display device with excellent viewability can be provided. In this manner, it is possible to provide a display device having a wide display area in which seams are difficult to see. do.

[0022] According to one aspect of the present invention, a novel image processing device, a display system, an electronic device, etc. Alternatively, according to one embodiment of the present invention, a display device including a plurality of display panels can be provided. It is possible to provide an image processing device that can make the seams of a display area less visible. Cut.

[0023] The description of these effects does not preclude the existence of other effects. An embodiment does not necessarily have all of these effects. It is possible to extract other effects from the description in the section. [Brief description of the drawings]

[0024] [Figure 1] 1A and 1B are diagrams illustrating an example of a display system and an example of an image processing device. [Diagram 2] FIG. 1 is a diagram showing an example of a display system. [Diagram 3] FIG. 1 is a diagram showing an example of a display system. [Figure 4] FIG. 1 is a diagram showing an example of a display system. [Diagram 5] A diagram showing the relationship between input values ​​and output values. [Figure 6] 1A and 1B are diagrams illustrating an example of a display panel and an example of a display device. [Figure 7] FIG. 4 is a diagram showing an example of pattern information. [Figure 8] FIG. 1 illustrates an example of a display device. [Figure 9] FIG. 1 illustrates an example of a display device. [Figure 10] FIG. 2 is a diagram showing an example of a display panel. [Figure 11] FIG. 1 illustrates an example of a display device. [Figure 12] FIG. 1 illustrates an example of a display device. [Figure 13] FIG. 1 illustrates an example of a display device. [Figure 14] FIG. 2 is a diagram showing an example of a display panel. [Figure 15] FIG. 2 is a diagram showing an example of a display panel. [Figure 16] FIG. 1 illustrates an example of a display device. [Figure 17] FIG. 1 is a diagram showing an example of a light-emitting panel. [Figure 18] FIG. 1 illustrates an example of a display device. [Figure 19] FIG. 1 is a diagram showing an example of a light-emitting panel. [Figure 20] FIG. 1 is a diagram showing an example of a light-emitting panel. [Figure 21] FIG. 2 is a diagram showing an example of a touch panel. [Figure 22] FIG. 2 is a diagram showing an example of a touch panel. [Figure 23] FIG. 2 is a diagram showing an example of a touch panel. [Figure 24] FIG. 2 is a diagram showing an example of a touch panel. [Diagram 25] FIG. 2 is a diagram showing an example of a touch panel. [Figure 26] FIG. 2 is a diagram showing an example of a touch panel. [Figure 27] 1A and 1B are diagrams illustrating examples of electronic devices and lighting devices. [Figure 28] 1A and 1B are diagrams illustrating examples of electronic devices. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0025] The embodiment 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 embodiment, and various changes and modifications may be made in the form and details without departing from the spirit and scope of the present invention. It will be easily understood by those skilled in the art that the above-mentioned invention can be obtained by the following embodiments. It should not be construed as being limited to the contents described.

[0026] In the configuration of the invention described below, the same parts or parts having similar functions are referred to as the same parts. The same reference numerals are used in common among different drawings, and the repeated explanations are omitted. When referring to a function, the same hatch pattern may be used and no particular reference number may be given.

[0027] In addition, the position, size, range, etc. of each component shown in the drawings are not necessarily the same as in the actual embodiment, in order to facilitate understanding. Therefore, the disclosed invention may not necessarily represent the position, size, range, etc. Furthermore, the present invention is not limited to the position, size, range, etc. disclosed in the drawings.

[0028] The words "film" and "layer" may be interchangeable depending on the circumstances. For example, the term "conductive layer" can be replaced with "conductive film" Alternatively, for example, the term "insulating film" may be changed to " may be changed to the term "insulating layer."

[0029] In this specification, an example of the case where X and Y are electrically connected is When Y is directly connected without any other element, and when X and Y are electrically connected The elements that are connected to the power supply (e.g., switches, transistors, capacitance elements, inductors, resistance elements, diodes, etc.) There are cases where one or more devices (such as a power supply, a display element, a light-emitting element, or a load) are connected between X and Y. A switch has a function that can be controlled to be turned on and off. A switch can be in a conductive (on) or non-conductive (off) state, allowing current to flow or not. The switch has the function of controlling how much current flows through the circuit. It has the function of changing the

[0030] (Embodiment 1) In this embodiment, an image processing device according to one embodiment of the present invention and a display system according to one embodiment of the present invention are , will be explained with reference to the drawings.

[0031] By arranging multiple display panels in one or more directions (for example, in a line or in a matrix), A display device having a large display area can be manufactured.

[0032] When manufacturing a large display device using multiple display panels, the size of each display panel is Therefore, it is not necessary to enlarge the manufacturing equipment for producing the display panel. This eliminates the need for space-saving manufacturing equipment for small and medium-sized display panels. Since it is not necessary to use new manufacturing equipment to enlarge the display device, This reduces manufacturing costs and also suppresses the decline in yield that accompanies larger display panels. can.

[0033] When the size of the display panel is the same, a display device with multiple display panels can be used. A display device with a display panel has a larger display area and can display more information at one time. It has the following effects:

[0034] However, each display panel has a non-display area surrounding the display area. When output images of a plurality of display panels are combined to display one image, the one image is , they will be perceived as separate by the user of the display device.

[0035] By narrowing the non-display area of ​​each display panel (using a narrow-frame display panel), This can prevent the display of the panel from appearing separated, but it completely eliminates the non-display area of ​​the display panel. It is difficult to do so.

[0036] In addition, if the area of ​​the non-display region of the display panel is small, the edge of the display panel and the elements in the display panel The distance between the display panel and the substrate becomes shorter, and the elements become more susceptible to deterioration due to impurities entering the display panel from outside. This may be the case.

[0037] In view of this, in one embodiment of the present invention, a plurality of display panels are arranged so as to overlap with each other. Of the two display panels, at least the display panel located on the display surface side (upper side) is a visible light In one aspect of the present invention, the display device has a region that transmits light adjacent to the display region. The display area of ​​the display panel and the area that transmits visible light of the display panel arranged above overlap each other. Therefore, it is possible to reduce the non-display area between the display areas of two overlapping display panels, and This makes it difficult for users to notice the seams of the display panel. Therefore, a large display device can be realized.

[0038] At least a part of the non-display area of ​​the upper display panel is an area that transmits visible light. This allows the display area of ​​the display panel located below to overlap with that of the display panel located below. At least a part of the non-display area of ​​the display panel is overlapped with the display area of ​​the display panel located above, or These areas can overlap with the areas that block visible light. Since this does not affect the reduction in area (reduction of the area other than the display area), there is no need to reduce the area.

[0039] If the non-display area of ​​the display panel is large, the distance between the edge of the display panel and the elements within the display panel becomes long. This makes it possible to prevent the element from being deteriorated due to impurities entering the display panel from outside. For example, when an organic EL element is used as the display element, the edge of the display panel and the organic EL The longer the distance from the element, the more impurities such as moisture or oxygen from outside the display panel will enter the organic EL element. In the display device according to one embodiment of the present invention, Since the non-display area of ​​the display panel can be sufficiently secured, it is possible to use a display panel using organic EL elements, etc. Even if the liquid crystal display device is applied, a highly reliable large-sized display device can be realized.

[0040] However, the visible light transmission area is limited to visible light (for example, wavelengths between 450 nm and 700 nm). Therefore, the surface of the display panel located below the The display shows a portion that is visible through a region that transmits visible light and a portion that is visible without passing through the region. There will be a difference in luminance (brightness) between minutes and minutes.

[0041] In view of this, in one aspect of the present invention, a region of a display region that transmits visible light is A portion corresponding to at least one of a portion that is visible through the region and a portion that is visible without the region. This image processing corrects the gradation of the coordinates that are seen through the area that transmits visible light. This can suppress the difference in luminance between the part that is recognized through the region and the part that is recognized without passing through the region. Cut.

[0042] FIG. 1A illustrates an image processing device of one embodiment of the present invention.

[0043] The image processing device 11 is supplied with a first image signal S0. The image signal S 1 is supplied to a display device 12 .

[0044] The first image signal S0 and the second image signal S1 are image data (coordinate information, gradation information, etc. ) and synchronization signals (such as a start pulse signal and a clock signal).

[0045] FIG. 1B shows a display system according to one embodiment of the present invention.

[0046] The display system 10 includes an image processing device 11 and a display device 12 .

[0047] A first image signal S0 is supplied to the image processing device 11 from outside the display system 10. The image processing device 11 supplies the second image signal S1 to the display device 12.

[0048] FIG. 1C shows an example of the configuration of the image processing device 11.

[0049] The image processing device 11 includes a calculation unit 51 and a storage unit 52 .

[0050] The first image signal S0 and the correction information are supplied to the calculation unit 51. The first image signal S0 is corrected based on the correction information to generate a second image signal S1. The calculation unit 51 can supply the second image signal S1 to a display device or the like. In the present specification, the correction information is electrical data.

[0051] The calculation unit 51 includes, for example, a CPU (Central Processing Unit), Includes image processing arithmetic circuits, etc.

[0052] The correction information is supplied to the storage unit 52. The storage unit 52 supplies the correction information to the calculation unit 51. do.

[0053] The correction information supplied to the image processing device 11 includes, for example, information from a camera, a luminance meter, various sensors, (illuminance sensor, color temperature sensor, etc.), optical inspection system of the display device, or calculation, etc. The information acquired in advance is also included. In addition, the display area of ​​the display panel is overlapped with the visible light transmitting area. The light transmittance of the part being inspected (the light transmittance of the material itself (internal transmittance) or the surface reflection and back surface The light transmittance (external transmittance) including the effect of reflection, the light reflectance, or the light absorption rate, etc. The measurement result may be used as correction information. Information such as luminance, gradation, brightness, or chromaticity may be used as correction information. Since the captured image may be distorted, it is recommended to use a camera that corrects the distortion or It is preferable to use the results of analyzing the corrected image as correction information. 11 has a function of correcting distortion of a supplied image, or a function of analyzing a supplied image and obtaining correction information. The signal may have a function of generating

[0054] The storage unit 52 stores, for example, a computer program for the calculation unit 51 to execute calculation processing, The lookup table, the correction information calculated by the calculation unit 51, or the correction information supplied to the image processing device 11 It has a memory circuit for storing correction information and the like.

[0055] In FIG. 1C, an example in which the correction information is supplied from outside the image processing device 11 is shown. One embodiment of the present invention is not limited to this. The correction information may be information from outside the display system 10. or information supplied from outside the image processing device 11, and information within the display system 10, or The information generated within the image processing device 11 is an example of the information.

[0056] For example, the image processing device 11 may generate the correction information. and the correction information may be supplied from the calculation unit 51 to the storage unit 52.

[0057] FIG. 1D illustrates a display system according to one embodiment of the present invention.

[0058] The display system 10 comprises an image processing device 11, a display device 12, and a detection device 14.

[0059] The detection device 14 acquires information such as the luminance, gradation, brightness, or chromaticity of the display device 12. Alternatively, the detection device 14 may detect the surroundings of the display device 12 or the display system 10. The detection device 14 can obtain information about the environment (such as illuminance or color temperature). Cameras, video cameras, luminance meters, various sensors (illuminance sensors, color temperature sensors, etc.), or displays The detector 14 may include an optical inspection system for the display device. The information (information, etc.) can be supplied to the image processing device 11 in the form of electrical data.

[0060] The display system 10 may have multiple types of detection devices to obtain multiple types of information. Correction information may be generated from these pieces of information and used in image processing.

[0061] For example, when the display device 12 is displaying an image, the detector 14 detects the brightness information of the display device 12. The detection device 14 supplies the luminance information to the image processing device 11. For example, When the display device 12 is displaying white on the entire screen, the detector 14 obtains the luminance information of the display device 12. Alternatively, the display device 12 may display red, blue, or green on the entire surface. In each case, the detector 14 obtains luminance information of the display device 12. The device 14 may obtain a plurality of pieces of luminance information.

[0062] The luminance information is supplied from the detection device 14 to the storage unit 52 of the image processing device 11, The luminance information may be supplied from the storage unit 52 to the calculation unit 51. Alternatively, the luminance information may be supplied from the detection device 14. It may also be supplied directly to the calculation unit 51.

[0063] The calculation unit 51 performs calculations using the supplied luminance information to generate correction information. 1 supplies the generated correction information to the storage unit 52.

[0064] After the correction information is supplied to the storage unit 52, the display device 12 displays an image corrected by the correction information. Specifically, a first image signal S0 is input to the calculation unit 51 from the outside. The calculation unit 51 receives the first image signal, and the correction information is supplied from the storage unit 52. The correction information is used to correct the first image signal S0 to generate a second image signal S1. 51 supplies the second image signal S1 to the display device 12. As a result, the display device 12 The corrected image can be displayed.

[0065] 2 to 4 show configuration examples of the display system 10. In FIG.

[0066] The display system 10 shown in FIGS. 2 to 4 includes a decoder circuit 21, an image processing device 11, The signal splitting unit 22, the controller 23a, the controller 23b, and the display device 12 do.

[0067] The display device 12 has a plurality of display panels arranged side by side in one or more directions. , an example having two display panels (display panel 30a and display panel 30b) is shown. For details about the display device 12, please refer to the contents described below.

[0068] In the present embodiment, the display panels and the components included in the display panels In order to distinguish between the display panels or between components related to each display panel, The following explanation will be given with the font added. Unless otherwise specified, the bottom side (opposite the display surface) The display panel or component placed on the left side of the display panel is marked with "a" and the other component placed above it is marked with "b". The above display panels and their components are labeled "b", "c", and "alphabetical order" from the bottom. They will be listed in alphabetical order.

[0069] The display panel 30a includes a display area 101a and a driving circuit 31a. may have a region 110a that transmits visible light.

[0070] The display panel 30b includes a display area 101b, a driving circuit 31b, and a region 101b that transmits visible light. Has 10b.

[0071] The display area 101a of the display panel 30a is a visible light transmitting area 11 of the display panel 30b. The display area 101a overlaps with the area 110b that transmits visible light. There may be a difference in the perceived brightness between the overlapping and non-overlapping areas. The image processing device 11 extracts the area of ​​the image data that overlaps with the area 110b that transmits visible light. The gradation of the coordinates corresponding to at least one of the overlapping portion and the non-overlapping portion is corrected. This makes it possible to reduce uneven brightness in the display region 101a.

[0072] For example, the luminance when the display region 101a and the region 110b that transmits visible light are overlapped, The luminance without overlapping is acquired in advance as correction information, or measured using a detection device. By doing so, the gradation of the image data can be corrected based on the correction information.

[0073] In addition, the image data does not overlap with the area 110b of the display area 101a that transmits visible light. When correcting the gradation of the coordinates corresponding to the part that is not displayed, the gradation of the coordinates corresponding to the display area 101b is corrected. It is preferable to correct the brightness of the entire display device 12. can.

[0074] A compressed or encoded image signal S10 is supplied to the decoder circuit 21. The line 21 converts, decompresses, or restores (decodes) the image signal S10 to generate an image signal S11. Generate.

[0075] It should be noted that the image signal S10 supplied to the display system 10 is not a compressed or encoded signal. In the case where the signal can be processed by the image processing device 11, the decoder circuit 21 is not provided. The image signal S10 may be directly supplied to the image processing device 11 or the like.

[0076] In FIG. 2, a decoder circuit 21 supplies an image signal S11 to an image processing device 11.

[0077] The image processing device 11 corrects the supplied image signal based on the correction information, thereby obtaining a different image. An image signal is generated.

[0078] In FIG. 2, an image signal S11 is supplied to an image processing device 11. The image processing device 11 The image signal S11 is corrected based on the correction information to generate an image signal S12. The image processing device 11 supplies the image signal S12 to the signal division unit 22.

[0079] The signal division unit 22 divides the supplied image signal. The image signal is divided into the number of display panels of the display device 12. For example, in FIG. Since the device 12 is composed of two display panels, the supplied image signal S12 is converted into the image signal S1 The image signal S13a and the image signal S13b are split into two.

[0080] The controller 23a controls the drive circuit 31a to generate an image signal S13a based on the image signal S13a. It supplies the signal S14a.

[0081] Similarly, the controller 23b controls the drive circuit 31 based on the supplied image signal S13b. b supplies an image signal S14b.

[0082] The controller 23a and the controller 23b are configured to, for example, If it is a digital signal, it drives the display panel 30a or the display panel 30b. It is preferable that the controller 23a and the controller 23b have a function of converting the signal into an analog signal for use in the digital signal processing. The function of the controller 23b is the drive circuit 31a and the drive circuit 31b, or the signal division unit 2 When the controller 23a and the controller 23b are provided, the controller 23a and the controller 23b are not provided. It is possible.

[0083] The driving circuit 31a drives the pixels in the display area 101a to Similarly, the driving circuit 31b can drive the image in the display area 101b. By driving the pixels, an image can be displayed in the display area 101b.

[0084] The display panel may have a driver circuit that functions as a gate driver circuit. Each of the driving circuits 31a and 31b preferably functions as a gate driving circuit. Alternatively, the display panel does not include a gate driving circuit, and the display panel and the gate driving circuit A display device is manufactured using a module having an integrated circuit (IC) that functions as a display device. The IC is a COG (Chip On Glass) or COF (Chip On Glass) type. It can be mounted on a board using the film method. Flexible printed circuit board (hereinafter referred to as Flexible printed circuit FPC), TAB (Tape Automated Bonding), or TC A tape carrier package (P) or the like may be used for the module.

[0085] Similarly, the display panel may have a driver circuit that functions as a source driver circuit. Alternatively, the display panel may not be provided with a source driver circuit, and the display panel and a semiconductor device that functions as a source driver circuit may be provided. A display device may be manufactured using a module having such an IC.

[0086] Alternatively, as shown in FIG. 3 and FIG. 4, the decoder circuit 21 divides the image signal S11 into a signal divider. 22.

[0087] As shown in FIG. 3, among the multiple image signals generated by the signal division unit 22, At least one of them is supplied to the image processing device 11 .

[0088] In FIG. 3, the signal splitting unit 22 supplies the image processing device 11 with an image signal S12a. The image processing device 11 corrects the image signal S12a based on the correction information, and outputs the image signal S13a The image processing device 11 supplies the image signal S13a to the controller 23a.

[0089] Moreover, the signal splitter 22 supplies an image signal S12b to the controller 23b.

[0090] As shown in FIG. 4, the signal division unit 22 divides the image signals All may be fed to the image processor 11 .

[0091] In FIG. 4, the signal splitting unit 22 outputs the image signal S12a and the image signal S The image processing device 11 complements the image signal S12a and the image signal S12b. Correct based on positive information and generate image signal S13a and image signal S13b. Image processing The image processing device 11 supplies the image signal S13a to the controller 23a and supplies the image signal S13b to the controller 23b.

[0092] Next, an example of the correction performed by the image processing device 11 will be described with reference to FIGS. 5(A) to (F). Explain.

[0093] In FIGS. 5(A) to (F), the input value input, which is the value of the luminance of the image data included in the image signal input to the display device 12, is set as x (0 ≤ x ≤ 1), and the output value output, which is the value of the luminance output from the display device 12, is set as y (0 ≤ y ≤ 1). Note that the larger the output value y, the brighter the screen (higher the luminance). The input value x and the output value y can each be replaced with gradation values. For example, in the case of 256 gradations, the input value can be x (0 ≤ x ≤ 255), and the output value can be y (0 ≤ y ≤ 255). Note that when the input value x is a luminance value, that value may already be a value that has been corrected by gamma correction or the like (that is, x = x0 , , , , , , , , , ,

[0094] Assume that in the display area 101a of the display panel 30a that does not overlap with the light-transmitting area 110b of visible light, the relationship between the output value y and the input value x (also referred to as the input-output characteristic) is represented by y = x. On the other hand, consider the case where the input-output characteristic in the display area 101a of the display panel 30a that overlaps with the light-transmitting area 110b of visible light is y = a0x (0 < a0 < 1). That is, compared with the display area 101a of the display panel 30a that does not overlap with the light-transmitting area 110b of visible light, the display area 101a of the display panel 30a that overlaps with the light-transmitting area 110b of visible light has a lower luminance. This causes uneven brightness within the display panel 30a. Here, a0 is a value that depends on the optical characteristics of the region 110b that transmits visible light.

[0095] Therefore, in one aspect of the present invention, in order to prevent uneven brightness from occurring within the display panel 30a, the relationship between the input-output characteristics is made equal or the difference between them is made small between the portion that overlaps with the region 110b that transmits visible light and the portion that does not overlap, and the brightness (or tone) corresponding to each position is corrected.

[0096] For example, the input-output characteristics of the portion of the display region 101a that does not overlap with the region 110b that transmits visible light are corrected so as to be y = ax (0 < a < 1) as shown in FIG. 5(A). Specifically the image processing device 11 generates a second image signal S1 including tone information calculated based on such a correction formula for the tone information included in the first image signal S0, and outputs it to the display device 1 2. By performing such correction, it is possible to suppress uneven brightness within the display device 12. Here, a can be calculated using at least one of the brightness information of the display device 12, the transmittance of light in the region 110b that transmits visible light, the reflectance of light, and the absorptance of light, etc.

[0097] Note that the same degree of correction (correction using the same value of a) may be applied to all of the sub-pixels (for example, red (R) pixels, green (G) pixels, blue (B) pixels, etc.) that make up one pixel, or different degrees of correction (for example, correction using a R G B For example, in each case of red display, blue display, or green display, to the detection device 14 Therefore, when acquiring the luminance information of the display device 12, the average value of each of these luminances is calculated and a R a G a B is determined respectively which may be acceptable.

[0098] As shown in FIGS. 2 and 4, when supplying the corrected image signals to both the display panel 30a and the display panel 30b, for example, the luminance of the coordinates corresponding to at least one of the portion that does not overlap with the region 110b that transmits visible light of the display region 101a and the display region 101b can be corrected.

[0099] For example, in addition to the portion that does not overlap with the region 110b that transmits visible light of the display region 101a, by correcting the input-output characteristics of the display region 101b so that they are as shown in FIG. 5(A), y = ax (0 < a < 1), the luminance unevenness within the display device 12 can be suppressed.

[0100] Or, as shown in FIG. 3, when supplying the corrected image signal only to the display panel 30a for example, the luminance of the coordinates corresponding to the portion that overlaps with the region 110b that transmits visible light of the display region 101a among the image data can be corrected.

[0101] For example, as shown in FIG. 5(B), by correcting the input-output characteristics in the portion that overlaps with the region 110b that transmits visible light of the display region 101a so that they are y = x / a (0 < a < 1), the luminance unevenness within the display device 12 can be suppressed.

[0102] Note that in the display device, the input value x and the output value y do not necessarily have a proportional relationship. Generally, the input-output characteristics of the display device are as shown in FIG. 5(C), y = xγ It is known that it can be approximated by the following formula .

[0103] In such a case, for example, as shown in FIG. 5(D), the portion that does not overlap with the region 110b that transmits visible light of the display region 101a and the input / output characteristics of the display region 101b are corrected so that y = ax ( γ ( 0 < a < 1), thereby suppressing luminance unevenness in the display device 12. .

[0104] Alternatively, in one aspect of the present invention, in addition to the correction based on the value of a, gamma correction may be applied to the image signal. .

[0105] Specifically, as shown in FIG. 5(E), the input / output characteristics of the portion that overlaps with the region 110 b that transmits visible light of the display region 101a are corrected so that y = (x / a) (1 / γ) (0 < a < 1). Further, as shown in FIG. 5(F), the input / output characteristics of the portion that does not overlap with the region 110 b that transmits visible light of the display region 101a and the display region 101b are corrected so that y = x . Thereby, luminance unevenness in the display device 12 can be suppressed, and (1 / γ) an image faithful to the image signal supplied to the display system 10 can be displayed. .

[0106] In addition, the image processing device 11 may have pattern information including, as correction information, a correction formula for input / output characteristics, coordinate information of the display panel, and information on whether to correct for each coordinate. Further, the pattern information may have a plurality of correction formulas for input / output characteristics. In that case, the pattern information includes information on whether to correct for each coordinate and, for the coordinates to be corrected, It is preferable that the correction formula to be used is included. Here is an example.

[0107] The display panel shown in FIG. 6A includes a display region 101, a region 120 that blocks visible light, and a region 130 that blocks visible light. The display device shown in FIG. 6(A) has six display panels stacked on top of each other. 6(B).

[0108] In FIG. 6B, the display panel located at the bottom (the upper left display panel) has a display area 101a is an area 105a where an area 110 of another display panel that transmits visible light overlaps. , and a triple-overlapped region 105c.

[0109] The display area 101b is an area 110 of another display panel that transmits visible light. 05a, a two-layer overlapping area 105b, and a three-layer overlapping area 105c.

[0110] The display area 101c is an area 110 of another display panel that transmits visible light. 05a and an overlapping area 105b.

[0111] The display area 101d and the display area 101e each transmit visible light from the other display panels. The area 110 has an overlapping area 105a.

[0112] The display region 101f does not have an overlapping portion with the region 110 that transmits visible light.

[0113] An example of pattern information corresponding to such a display device is shown in FIGS. 7(A) to (D). Now, an example of correcting the gradation of the portion of the display area 101 that overlaps with the area 110 that transmits visible light will be described. For simplicity, let a in the above correction formula be expressed as the visible light of another display panel. An example will be shown in which the value a1 is used only when one transparent region 110 overlaps, and correction is performed. Furthermore, when two or more sheets overlap, the respective values ​​(a2 for two sheets, a3 for three sheets, etc.) ) may be measured or calculated and used for correction.

[0114] FIG. 7A shows pattern information corresponding to the display area 101a. For example, in FIG. In the coordinates included in the area 92a shown in FIG. 1, no correction is performed, and in the coordinates included in the area 92b shown in FIG. = a1, and for coordinates included in the area 92d, a = (a1) 3 Use It is possible to do the right thing.

[0115] FIG. 7B shows pattern information corresponding to the display area 101b. For example, in FIG. In the coordinates included in the area 92a shown in FIG. 1, no correction is performed, and in the coordinates included in the area 92b shown in FIG. = a1, and for coordinates included in area 92c, a = (a1) 2 Use Then, in the coordinates included in the area 92d, a = (a1) 3 Correction can be performed using Cut.

[0116] FIG. 7C shows pattern information corresponding to the display area 101c. For example, in FIG. In the coordinates included in the area 92a shown in FIG. 1, no correction is performed, and in the coordinates included in the area 92b shown in FIG. = a1, and for coordinates included in area 92c, a = (a1) 2 Use It is possible to do the right thing.

[0117] FIG. 7D shows pattern information corresponding to the display area 101d and the display area 101e. For example, no correction is performed on the coordinates included in the area 92a shown in FIG. 7(D), and the coordinates are stored in the area 92b. In the included coordinates, a correction can be made using a=a1.

[0118] In this way, the coordinate information of the display panel and each The pattern information including the value of a corresponding to the coordinates is acquired and stored in the image processing device 11. good.

[0119] The correction performed by the image processing device 11 is not limited to the above. For example, unsharp masking Sharpening processing, noise removal processing, contrast enhancement processing, edge enhancement processing, etc. may be carried out.

[0120] In addition, in the image processing device 11, the area overlapping the area 110b of the display area 101a that transmits visible light is The correction is not limited to the correction of the luminance difference between overlapping and non-overlapping parts, but also applies to the correction of the luminance difference within one display panel. For example, the display may be divided into a plurality of display panels, and the difference in luminance or chromaticity may be corrected. Corrections can be made based on the characteristics of the device 12 or on information about the environment surrounding the display device 12. .

[0121] In addition, as shown in FIG. 8A, when the overlapping of the display panels is misaligned, the display area In order to make the outline of the portion of 101 overlapping with the region 110 that transmits visible light less noticeable, an anti-glare It is preferable to perform aliasing processing. Turn information may be acquired and provided to the image processing device 11 .

[0122] The display system of one embodiment of the present invention may include a flexible display device. In that case, as shown in FIG. 8B, when the display device is bent, the luminance By acquiring this information, the image processing device can perform correction with higher accuracy, which is preferable. stomach.

[0123] In one embodiment of the present invention, at least a part of the display device may be flexible. At least a part of the display panel may be flexible. It is preferable that the display panel is flexible, so that a large curved display can be displayed. This allows realization of a display system having a large optical field or a flexible display system, thereby expanding the range of applications. The organic EL element can be suitably used as a display element.

[0124] The display device or display system may be, for example, FHD (1920 x 1080), 4K2K (38 40x2048 or 4096x2180, or 8K4K (7680x4320) It is preferable to use a high resolution such as 8192 x 4320.

[0125] A specific example of the display device 12 will be described below with reference to the drawings.

[0126] FIG. 9(A) shows a top view of the display device 12. The display device 12 shown in FIG. The display device has three display panels 100 shown in FIG.

[0127] 9(B) and (C) show perspective views of the display device 12 different from that shown in FIG. 9(A). The display device 12 shown in FIG. 10C is a 2×2 matrix display panel 100 shown in FIG. The display device has four of them in a box shape (two in the vertical direction and two in the horizontal direction). 9(A) is a perspective view of the display surface side of the display device 12, and FIG. 9(B) is a perspective view of the display surface side of the display device 12. FIG.

[0128] Also, in FIGS. 9(A) to 9(C), an example is shown in which each display panel is electrically connected to an FPC. vinegar.

[0129] Regarding a display panel that can be used for the display device 12, referring to Figs. 10(A) to 10(D), 10(A) to 10(D) are examples of top views of the display panel 100.

[0130] The display panel 100 has a display area 101 and an area 102. Here, the area 102 is This refers to the area other than the display area 101 in the top view of the display panel 100. It can also be called a non-display area.

[0131] For example, the display panel 100 has a frame-shaped display area 101 surrounding it as shown in FIG. It may have a region 102.

[0132] 10B to 10D show the specific configuration of the region 102. The optical filter has a region 110 that transmits visible light and a region 120 that blocks visible light. The visible light blocking area 110 and the visible light blocking area 120 are adjacent to the display area 101. The transparent region 110 and the visible light blocking region 120 are located on the periphery of the display region 101. It may be provided along a portion.

[0133] In the display panel 100 shown in FIG. 10B, the region 110 that transmits visible light is a display region 1 10C, the display panel 100 is arranged along one side of the display panel 100. A region 110 that transmits visible light is disposed along two sides of the display region 101. The light-transmitting region 110 may be arranged along three or more sides of the display region 101. As shown in FIG. 10B etc., the region 110 that transmits visible light is in contact with the display region 101. It is preferable that the light emitting element is provided up to the edge of the display panel.

[0134] In the display panel 100 shown in FIGS. 10B to 10D, the region 120 that blocks visible light is a display region. The visible light blocking area 120 is disposed along two sides of the display panel. It may be provided in the vicinity.

[0135] In the region 102 shown in FIGS. 10B and 10C, the region 110 that transmits visible light and The visible light transmittance in the area other than the visible light blocking area 120 is not important. As shown in FIG. 10(D), a region 110 that transmits visible light is provided around the entire periphery of the display panel. At least a part of the visible light transmitting region 110 is adjacent to the display region 101. Between the visible light transmitting region 110 and the display region 101, there is a visible light blocking region 120. There may be a portion located.

[0136] The display area 101 includes a plurality of pixels arranged in a matrix and is capable of displaying an image. It is possible. Each pixel is provided with one or more display elements. The display elements may be, for example, For example, a light-emitting element such as an organic EL element, or a liquid crystal element can be used.

[0137] The region 110 that transmits visible light is made of a material that transmits visible light. For example, a display panel The substrate, adhesive layer, etc. constituting the region 100 may be included. The higher the visible light transmittance, the higher the light extraction efficiency of the display panel underneath can be improved, so In the region 110 that transmits visible light, the wavelength range is 450 nm or more and 700 nm or less. The average light transmittance of the surrounding area is preferably 70% or more, and more preferably 80% or more. It is more preferable that the content is 90% or more.

[0138] In the region 120 that blocks visible light, for example, pixels (or display elements) included in the display region 101 are In addition to the wiring, a wiring for driving the pixel is provided. A driving circuit (scanning line driving circuit, signal line driving circuit, etc.) for the above purpose may be provided. The visible light blocking region 120 includes a terminal (also called a connection terminal) for electrically connecting to an FPC or the like, and and wiring electrically connected to said terminals.

[0139] Here, the width W of the region 110 that transmits visible light shown in FIGS. 10(B) and (C) is 0.5 mm. It is preferable that the thickness is 1 mm or more and 150 mm or less, and more preferable that the thickness is 1 mm or more and 100 mm or less. The region 110 that transmits visible light is preferably a sealing region. Therefore, the larger the width W of the region 110 that transmits visible light, the smaller the area of ​​the display panel 100. The distance between the edge and the display area 101 can be increased, and impurities such as water from the outside can be prevented from entering the display area. It is possible to prevent the visible light from penetrating into the region 101. The width W of 110 corresponds to the shortest distance from the display area 101 to the edge of the display panel 100. There are cases.

[0140] For example, when an organic EL element is used as a display element, the width of the region 110 that transmits visible light is By setting W to 1 mm or more, the deterioration of the organic EL element can be effectively suppressed, improving reliability. In addition, the appearance can be improved even in the area other than the area 110 that transmits visible light. The distance between the edge of the display area 101 and the edge of the display panel 100 is set to be within the above range. It is preferable that

[0141] The display device 12 shown in FIG. 9(A) includes display panels 100a, 100b, and 100c.

[0142] The display panel 100b is disposed so that a part of it overlaps the upper side (display surface side) of the display panel 100a. Specifically, the display panel 100a is provided with a display area 101a on the display panel 100. The display panel 1 is arranged so that the regions 110b that transmit visible light of the display panel 1b overlap each other. If the area 120b of the display panel 100b that blocks visible light overlaps the display area 101a of the display panel 100a, In addition, the area 102a of the display panel 100a and the visible light are not blocked. The display area 101b of the display panel 100b is arranged so as to overlap the area 120a. .

[0143] Similarly, the display panel 100c is partially overlapped with the upper side (display surface side) of the display panel 100b. Specifically, the display panel 100b is arranged on the display area 101b of the display panel 100b. The regions 110c of the display 100c that transmit visible light are arranged so as to overlap each other. A region 120c that blocks visible light of the display panel 100c is disposed on the display region 101b of the panel 100b. In addition, the area 102b of the display panel 100b and the visible area 102b of the visible area 102b are arranged so as not to overlap each other. The display panel 100c is disposed so that the display area 101c of the display panel 100c overlaps the light blocking area 120b. It is being done.

[0144] Since the region 110b that transmits visible light overlaps the display region 101a, the display panel 100 Even if b overlaps with the display surface of the display panel 100a, the user of the display device 12 can see the display area Similarly, the entire display in the display area 101b can be viewed with visible light. Since the display panel 100c has an area 110c that transmits light from the display panel 100b, the display panel 100c can transmit light from the display panel 100b. Even if the display area 101b overlaps the screen, the user of the display device 12 can visually recognize the entire display of the display area 101b. It becomes possible to do so.

[0145] In addition, the display panel 100b has a display area 102a and a visible light blocking area 120a on the upper side thereof. The area 101b overlaps with the display area 101a, forming a non-display area between the display area 101a and the display area 101b. Similarly, there is no display panel on the upper side of the region 102b and the region 120b that blocks visible light. The display area 101b and the display area 101c of the rule 100c overlap each other. Therefore, there is no non-display area between the display areas 101a, 101b, and 101c. The seamlessly arranged area can be used as the display area 13 of the display device 12.

[0146] The display device 12 shown in FIGS. 9B and 9C includes display panels 100a, 100b, and 100c. Equipped with 100d.

[0147] In FIG. 9B and FIG. 9C, the short sides of the display panels 100a and 100b overlap each other. A part of the region 101a and a part of the region 110b that transmits visible light overlap each other. The long sides of the display panels 100a and 100c overlap each other, and a part of the display area 101a and a part of the visible light emitting area 102a and 102b are overlapped. There is a partial overlap of the transparent regions 110c.

[0148] In addition, in FIGS. 9B and 9C, a part of the display region 101b is a region that transmits visible light. The visible light transmitting region 110c and the visible light transmitting region 110d overlap each other. A portion of region 101c overlaps with a portion of region 110d that transmits visible light.

[0149] Therefore, as shown in FIG. 9(B), the display areas 101a to 101d are arranged seamlessly. The enclosed area can be used as the display area 13 of the display device 12.

[0150] Here, it is preferable that the display panel 100 has flexibility. The pair of substrates constituting the optical fiber 00 are preferably flexible.

[0151] As a result, for example, as shown in FIGS. 9B and 9C, the FPC 1 of the display panel 100a The vicinity of FPC 112a is curved to reduce the display area 10 of the display panel 100b adjacent to the FPC 112a. A part of the display panel 100a and a part of the FPC 112a can be disposed under the display panel 100a. As a result, the FPC 112a does not physically interfere with the rear surface of the display panel 100b. In addition, the display panel 100a and the display panel 100b can be arranged so as to overlap each other. When fixing, there is no need to consider the thickness of the FPC 112a, so the area that transmits visible light is This reduces the difference in height between the upper surface of the display panel 100a and the upper surface of the area 110b. The edge of the display panel 100b located above the display area 101a can be made less noticeable. .

[0152] Furthermore, by making each display panel 100 flexible, the display area of ​​the display panel 100b The height of the upper surface of the display area 101b of the display panel 100a is The display panel 100b can be gently curved to match the height. Therefore, except for the area near the overlapping area of ​​the display panel 100a and the display panel 100b, The height can be made uniform, and the display quality of the image displayed in the display area 13 of the display device 12 can be improved. It can be done.

[0153] In the above, the relationship between the display panel 100a and the display panel 100b has been described as an example. The same is true for two display panels that share the same display mode.

[0154] In order to reduce the step between two adjacent display panels 100, the thickness of the display panels 100 is For example, the thickness of the display panel 100 is set to 1 mm or less, preferably 300 mm or less. It is preferable that the thickness of the display panel is 100 μm or less, and more preferably 100 μm or less. This is preferable because it leads to a reduction in thickness and weight of the entire display device.

[0155] FIG. 11(A) is a top view of the display device 12 shown in FIGS. 9(B) and 9(C) as viewed from the display surface side. do.

[0156] Here, the transmittance of the visible light in the region 110 of the display panel 100 that transmits the visible light is If the height is not high enough, the display area 101 may be covered by the number of display panels 100 that overlap the display area 101. The brightness of the displayed image may be reduced.

[0157] For example, in the area A in FIG. 11A, a 1 In the region B, the display panel 100b is overlapped with the display panel 100c. A total of two display panels 100, 100c and 100d, are overlapped on the area 101b. In the region C, the display panel 100a is provided with a display region 101a on the display panel 100a. A total of three display panels 100, 100b, 100c, and 100d, are overlapped.

[0158] In such a case, the image data is corrected using the image processing device according to one embodiment of the present invention. Specifically, it is preferable that the number of display panels 100 overlapping the display area 101 is set to 1. It is preferable to perform a correction on the image data so as to locally increase the gradation of pixels. In this way, the deterioration of the display quality of the image displayed in the display area 13 of the display device 12 is suppressed. It becomes possible to do so.

[0159] In addition, the position of the edge of the display panel 100 arranged at the top is shifted from the edges of the other display panels 100. By this, the display panel 100 overlapping the display area 101 of the lower display panel 100 is The number can be reduced.

[0160] In FIG. 11B, display panels 100c and 100b are disposed on the display panels 100a and 100b. Specifically, the display panels 100a, 100b, and 100c are arranged in one direction. 0b, the display panels 100c and 100d are arranged in a region 1 In this case, the display area 101 is shifted by a distance of the width W of the display area 10. A region D in which one display panel 100 is superimposed on the display region 101, and a region B in which two display panels are superimposed on the display region 101. There is an area E where 100 is overlapped.

[0161] Moreover, the display panels may be arranged so as to be shifted in a direction (Y direction) perpendicular to the X direction. In FIG. 11C, the display panels 100b and 100c are different from the display panels 100a and 100c. 0d is shifted by a distance of the width W of the region 110 that transmits visible light in the positive direction of the Y direction. This shows the case where

[0162] The display panel 100 located at the top is shifted relative to the display panel 100 located at the bottom. In the case of arranging the display panels 100 in a combined manner, the outline of the combined display area 101 of each display panel 100 is Therefore, the display device is different from the rectangular shape as shown in Fig. 11(B) and (C). In the case where the display area 13 of the display device 12 is rectangular, the display panel 10 positioned outside the rectangular area It is preferable to drive the display panel 10 so that no image is displayed in the display area 101 of the display panel 10. In the display area 101 of 0, the number of pixels in the area where no image is displayed is taken into consideration. It is preferable to provide more pixels than the total number of pixels in the display panel 100 divided by the number of display panels 100. It is.

[0163] In the above description, the distance by which the display panels 100 are shifted relative to each other is determined based on the distance that transmits visible light. However, the present invention is not limited to this and may be modified depending on the shape of the display panel 100 or the The shape of the display area 13 of the display device 12 to be combined with the display device 12 should be taken into consideration and appropriately set. can be done.

[0164] 12 and 13 are each an example of a cross-sectional view of two display panels bonded together. do.

[0165] In each of FIGS. 12(A) to 12(E), the lower display panel includes a display area 101a and a visible light The lower display panel has a region 110a that transmits visible light and a region 120a that blocks visible light. The FPC 112a is electrically connected to the upper display panel. The optical filter has a region 101b, a region 110b that transmits visible light, and a region 120b that blocks visible light. An FPC 112b is electrically connected to the upper display panel.

[0166] In FIG. 12A, the FPC 112a is connected to the display surface (front surface) of the lower display panel. 13, an example is shown in which the FPC 112b is connected to the display surface side of the upper display panel.

[0167] Here, the visible light transmitting region of the upper display panel and the visible light transmitting region of the lower display panel are If there is air between the display area of ​​the filter, some of the light extracted from the display area will The light is reflected and displayed at the interface between the visible light and the atmosphere, and at the interface between the atmosphere and the visible light transmitting area. This may cause a decrease in the brightness of the area where multiple display panels overlap. In addition, the light extraction efficiency of the upper display panel is reduced. The area of ​​the display panel located below the display area is divided into areas that overlap with the area of ​​the display panel located below and areas that do not overlap with the area of ​​the display panel located below. This can cause differences in brightness, making the seams of the display panel more noticeable to users. .

[0168] Therefore, as shown in FIG. 12B, the display device has a transparent region between the display region and the region that transmits visible light. In addition, it is preferable to have a light transmitting layer 103 that has a refractive index higher than that of air and transmits visible light. This makes it possible to prevent air from entering between the display area and the area that transmits visible light, and the refractive index This can reduce the reflection at the interface due to the difference in the thickness of the display device. In addition, it is better to have no air between the two panels to reduce uneven brightness. It is easy to estimate the degree of decrease in luminance of the display area as seen through the light transmitting area. This makes it possible to improve the accuracy of image processing.

[0169] In addition, the higher the visible light transmittance of the transparent layer, the higher the light extraction efficiency of the display device. In the light-transmitting layer, the transmittance of light in the wavelength range of 450 nm to 700 nm is preferably The average value is preferably 80% or more, and more preferably 90% or more.

[0170] In addition, the smaller the difference in refractive index between the light-transmitting layer and the layer in contact with the light-transmitting layer, the more the reflection of light can be suppressed. For example, the refractive index of the light-transmitting layer only needs to be higher than that of air, and is preferably 1. The ratio is preferably 3 or more and 1.8 or less. The difference in refractive index between the substrates is preferably 0.30 or less, and more preferably 0.20 or less. It is more preferable that the ratio is 0.15 or less, and further more preferable that the ratio is 0.15 or less.

[0171] The light-transmitting layer is in detachable contact with at least one of the lower display panel and the upper display panel. It is preferable that the display panels constituting the display device can be detached independently. For example, if a display problem occurs on one display panel, the display panel with the display problem Only the display panel in the current version can be replaced with a new one. The other display panels can continue to be used. This allows the display device to be used for a longer period of time at lower cost.

[0172] In addition, if the display panel does not need to be detachable, the transparent layer may be made of a material having adhesive properties (adhesive The display panels may be fixed to each other using a bonding agent or the like.

[0173] The light-transmitting layer can be made of either an inorganic material or an organic material. A porous, gel-like, or solid material may be used.

[0174] The light-transmitting layer may be formed of, for example, water, an aqueous solution, a fluorine-based inactive liquid, a refractive liquid, silicone oil, etc. A liquid substance may be used.

[0175] When the display device is placed tilted to the horizontal plane (a plane perpendicular to the direction of gravity) or when the display device is placed in a position that is inclined to the horizontal plane (a plane perpendicular to the direction of gravity), When arranging the liquid vertically, the viscosity of the liquid material is preferably 1 mPa·s or more. It is preferable that the viscosity is 1 Pa·s or more, and more preferable that the viscosity is 10 Pa·s or more. In particular, it is preferable that the display device is arranged parallel to the horizontal plane. However, the present invention is not limited to this.

[0176] If the light-transmitting layer is inactive, it is possible to suppress damage to other layers constituting the display device. Yes, it is preferable.

[0177] It is preferable that the material contained in the light-transmitting layer is non-volatile. This can prevent air from entering the interface due to the volatilization of the material.

[0178] The light-transmitting layer can be made of a polymer material, such as epoxy resin or acrylic. Resin, silicone resin, phenolic resin, polyimide resin, imide resin, PVC (polyvinyl chloride) PVB (Polyvinyl Butyral) resin, EVA (Ethylene Vinyl Alcohol) resin Acetate resins and the like are also usable. Two-liquid mixed resins may also be used. Resins containing one or more of the following: UV-curable adhesives, reactive-curable adhesives, heat-curable adhesives, etc. Various types of curing adhesives such as curing adhesives and anaerobic adhesives, or adhesive sheets, etc. may be used. If it is not desired to fix the display panels together, the adhesive does not need to be cured.

[0179] The light-transmitting layer is preferably a layer that has high self-adsorption to the adherend. It is preferable that the transparent layer has a high peelability against the body. It is preferable that the display panel can then be attached again.

[0180] In addition, it is preferable that the light transmitting layer does not have adhesiveness or has low adhesiveness. The light-transmitting layer adheres to the substrate and transmits light from the substrate without damaging or soiling the surface. The peeling of the optical layer can be repeated.

[0181] The light-transmitting layer may be, for example, a film having an adhesive property or a film having a tackiness. In addition, an adhesive film having a laminated structure of an adhesive layer or a pressure-sensitive adhesive layer and a substrate is used. In this case, the adhesive layer or the pressure-sensitive adhesive layer functions as a light-transmitting layer in the display device, and the substrate functions as a display panel. The display device may function as a substrate for forming the display panel. The adsorption film may have a substrate. The adsorption film may have an anchor layer, an adsorption layer or an adhesive layer, and a substrate. The anchor layer may be provided between the adhesive layer and the substrate. The anchor layer also serves to smooth the coated surface of the adhesive layer or the adhesive layer of the substrate. This function makes it difficult for air bubbles to form between the adherend and the light-transmitting layer. .

[0182] For example, a display device may include a film in which a silicone resin layer and a polyester film are laminated. In this case, the silicone resin layer has an adhesive property and is preferably used as the light-transmitting layer. The polyester film also functions as a substrate that constitutes a display panel. In addition to the polyester film, a substrate constituting the display panel may be provided.

[0183] In addition, when a film in which an adsorption layer, a substrate, and an adhesive layer or a bonding layer are laminated is used, The adsorption layer functions as a light-transmitting layer in a display device, and the base material is a substrate constituting a display panel. The adhesive layer or the bonding layer functions as a layer for bonding the element layer and the substrate of the display panel. It may also function as a

[0184] There is no particular limitation on the thickness of the light-transmitting layer. For example, the thickness may be 1 μm or more and 50 μm or less. The thickness of the display panel may be thicker than 50 μm. However, when a flexible display device is to be manufactured, the thickness of the display panel may be thicker than 50 μm. It is preferable that the thickness of the light-transmitting layer is set to a level that does not impair the flexibility of the display device. For example, the thickness of the light-transmitting layer is The thickness of the light-transmitting layer is preferably 10 μm or more and 30 μm or less. good.

[0185] The display region 101a overlaps, via the light-transmitting layer 103, with a region 110b that transmits visible light. Therefore, air is prevented from entering between the display area 101a and the area 110b that transmits visible light. This can suppress the reflection at the interface due to the difference in refractive index.

[0186] As a result, the display area is divided into areas that overlap with the area 110b that transmits visible light and areas that do not overlap with the area 110b. The difference in brightness between the areas 101a and 101b is suppressed, and the user of the display device does not notice the seam of the display panel. In addition, unevenness in display or luminance in a display device can be suppressed. This becomes possible.

[0187] The visible light blocking area 120a and the FPC 112a overlap the display area 101b. Therefore, it is possible to secure a sufficient area for the non-display area and enlarge the display area without any seams. This makes it possible to realize a highly reliable large-sized display device.

[0188] In FIG. 12C, the FPC 112a is disposed on the opposite side (back side) of the lower display panel from the display surface. FPC112b is connected to the side opposite the display surface of the upper display panel (rear surface). An example of a connection is shown below.

[0189] As shown in FIG. 12C, the light-transmitting layer 103 is disposed in the area 12 that blocks visible light of the lower display panel. 0a and the display area 101b of the upper display panel.

[0190] By configuring the FPC to be connected to the back side of the display panel, the edge of the lower display panel It can be attached to the back of the upper display panel, so the adhesive surface area can be increased. This can increase the mechanical strength of the bonded portion.

[0191] As shown in FIG. 12(D), the area of ​​the display area 101a that does not overlap with the upper display panel The light transmitting layer 103 may overlap the visible light transmitting region 110a. Layer 103 may overlap.

[0192] Also, as shown in FIG. 12(E), the upper display panel has a display area 101a that does not overlap with the display area 101a. The region and the light transmitting layer 103 may overlap.

[0193] Also, for example, as shown in FIG. 13A, the lower display panel is made up of a substrate 151a and a substrate 152a. The upper display panel has a substrate 151b, a substrate 152b, an element layer 153a, and It may also have a child layer 153b.

[0194] The element layer 153a includes a region 155a including a display element and wiring electrically connected to the display element. The wiring included in the region 156a is electrically connected to the FPC 112a. To be continued.

[0195] Similarly, the element layer 153b of the upper display panel includes a region 155b including a display element, a display The region 156b includes wiring that is electrically connected to the element. is electrically connected to FPC 112b.

[0196] The light-transmitting layer 103a is provided on the substrate 152a. The laminated structure of the substrate 152a and the light-transmitting layer 103a is formed by using an adhesive film having the above laminated layers. The substrate 152b and the light-transmitting layer 103b can also be configured in a similar manner. Cut.

[0197] Depending on the material of the transparent layer, fine particles such as dust in the air may be adsorbed. In such a case, the area of ​​the display area 101a that does not overlap with the upper display panel may be It is preferable that the light transmitting layer 103 does not overlap the light transmitting layer 103. As a result, the display on the display device can be prevented from becoming unclear.

[0198] As shown in FIG. 13(B), a light transmitting layer 103a may be provided in contact with the substrate 151a. For example, the above-mentioned adsorption film having an adsorption layer and a base material laminated thereon is used to attach a substrate 1 A laminated structure of the substrate 151b and the light-transmitting layer 103a can be formed. The same configuration can be used for 103b.

[0199] In the configuration of FIG. 13B, the light-transmitting layer is not positioned on the outermost surface on the display surface side of the display device. This can prevent the display of the display device from becoming unclear due to dust or the like adhering to the layer 103. In addition, when a light-transmitting layer having adhesive properties is disposed on the back surface of the display device, the surface that is not in contact with the display panel The display device can be attached to a desired position in a freely detachable manner using the above method.

[0200] As shown in FIG. 13C, the front of the display panel 100a and the front of the display panel 100b A resin layer 131 may be provided to cover the surface. The display areas of the display panels 100a and 100b and the overlapping area of ​​the display panels 100a and 100b are shown in FIG. It is preferable to provide a resin layer 131 covering the above-mentioned area.

[0201] By providing the resin layer 131 across the plurality of display panels 100, the mechanical In addition, if the surface of the resin layer 131 is formed to be flat, It is possible to improve the display quality of the image displayed in the display area 13. For example, Coating machines such as curtain coaters, gravure coaters, roll coaters, and spin coaters By using this apparatus, a resin layer 131 with high flatness can be formed.

[0202] The refractive index of the resin layer 131 is 0.1 times that of the substrate used on the display surface side of the display panel 100. It is preferable that the ratio is 0.8 to 1.2 times, and more preferably 0.9 to 1.1 times. The thickness of the display panel 100 is preferably 0.95 times or more and 1.15 times or less. The smaller the difference in the refractive index of the layer 131, the more efficiently the light can be extracted to the outside. The resin layer 131 having such a refractive index is disposed between the display panel 100a and the display panel 100b. By providing the step portion so as to cover it, the step portion becomes difficult to be seen, so that the step portion is not visible in the display area 13. The display quality of the displayed image can be improved.

[0203] The resin layer 131 is a layer that transmits visible light. The resin layer 131 is made of, for example, an epoxy resin. , aramid resin, acrylic resin, polyimide resin, polyamide resin, polyamideimide resin Organic resins such as oils can be used.

[0204] As shown in FIG. 13D, a protective substrate 13 is disposed on the display device 12 via a resin layer 131. In this case, the resin layer 131 is preferably provided between the display device 12 and the protective substrate 132. The protective substrate 132 may function as an adhesive layer for adhering the display device 1. 2, and can enhance the mechanical strength of the display device 12. The substrate 132 is made of a material having light-transmitting properties at least in the area overlapping the display area 13. In addition, the protection substrate 132 is formed so that areas other than the area overlapping the display area 13 are not visible. , and may have light-shielding properties.

[0205] The protective substrate 132 may have a function as a touch panel. If the protective substrate 132 is flexible and bendable, the protective substrate 132 is also flexible. It is preferable.

[0206] The protective substrate 132 is a substrate used on the display surface side of the display panel 100, or a resin layer 131. The difference in refractive index between the It is even more preferable that the ratio is less than or equal to the above.

[0207] The protective substrate 132 may be a film-like plastic substrate. For example, Polyethylene terephthalate (PET), polyethylene naphthalate (PEN), etc. polyester resin, polyacrylonitrile resin, polyimide resin, polymethyl methacrylate resin, polycarbonate (PC) resin, polyethersulfone (PES) resin, polya Mido resin (nylon, aramid, etc.), polycycloolefin resin, polystyrene resin, Polyamide-imide resin, polyvinyl chloride resin, polyether ether ketone (PEEK) resin Fat, polysulfone (PSF) resin, polyetherimide (PEI) resin, polyarylate (PAR) resin, polybutylene terephthalate (PBT) resin, polytetrafluoroethylene Polytetrafluoroethylene (PTFE) resin, silicone resin, etc. are also available. Substrate (also called prepreg), or inorganic filler mixed with organic resin to lower the linear expansion coefficient The protective substrate 132 is not limited to a resin film, but may be a paste. A transparent nonwoven fabric made by processing fibroin into a continuous sheet. A sheet containing spider silk fibers, a composite material made by mixing these with resin, and a fiber width of 4 nm or more A laminate of a nonwoven fabric made of cellulose fibers less than 0.00 nm and a resin film, or artificial spider silk fibers Alternatively, a laminate of a sheet containing the resin film and the resin film may be used.

[0208] The protective substrate 132 may be a small material such as a polarizing plate, a circular polarizing plate, a retardation plate, or an optical film. At least one may be used.

[0209] As shown in FIG. 13(E), the display surfaces of the display panels 100a and 100b A resin layer 133 and a protective substrate 134 may be provided on the surface opposite to the back surface of the display panel. By disposing a substrate supporting the display panel, unintended warping or bending of the display panel can be prevented. By suppressing the occurrence of such defects and keeping the display surface smooth, the display of the image displayed in the display area 13 can be improved. It can improve quality.

[0210] The resin layer 133 and the protective substrate 134 provided on the opposite side to the display surface are not necessarily light-transmitting. The material does not necessarily have to have a specific optical property, and may be a material that absorbs or reflects visible light.

[0211] As shown in FIG. 13(F), a resin layer 131 and a protective substrate are provided on the front surface of the display panel. A resin layer 133 and a protective substrate 134 may be provided on the back surface of the display 132. The display panel 100a and the display panel 100b are sandwiched between two protective substrates. The mechanical strength of 12 can be further improved.

[0212] In addition, the total thickness of the resin layer 131 and the protective substrate 132 and the total thickness of the resin layer 133 and the protective substrate 13 For example, the total thickness of the resin layer 131 and the resin layer 14 is preferably approximately the same. 33 are made to have the same thickness, and the protection substrate 132 and the protection substrate 134 are made of materials of the same thickness. This makes it possible to stack the display panels 100 in the thickness direction of the laminate. For example, the laminate including the display panel 100 may be curved. In this case, since the display panel 100 is positioned at the center in the thickness direction, the display changes with the curvature. This reduces the lateral stress applied to the display panel 100, thereby preventing damage to the display panel 100. This can be done.

[0213] In addition, when the thickness of the resin layer and the protective substrate differs between the end portion and the center portion of the display device, The average thickness, maximum thickness, minimum thickness, etc. are appropriately selected, and the resin layer 131 and the protective layer are formed under the same conditions. By comparing the total thickness of the substrate 132 with the total thickness of the resin layer 133 and the protective substrate 134, is preferred.

[0214] In FIG. 13(F), if the same material is used for the resin layers 131 and 133, the manufacturing cost Similarly, the protection substrate 132 and the protection substrate 134 are preferably made of the same material. This is preferable because it is possible to reduce the manufacturing cost.

[0215] As shown in FIGS. 13E and 13F, the display panel 100a and the display panel 100b The resin layer 133 and the protective substrate 134 are disposed on the rear side of the FPC 112a. In particular, as shown in FIG. 13(F), it is preferable to provide an opening for the FPC 112. When a resin layer 133 is provided so as to cover a part of the display panel 100a and the FPC 112a, This increases the mechanical strength of the connection, preventing the FPC112a from peeling off. Similarly, a resin layer 133 is provided so as to cover a part of the FPC 112b. It is preferable that

[0216] Next, a configuration example of the display panel 100 will be described. FIG. 14(B) is an example of an enlarged top view of the area P in FIG. 10(C). 1 is an example of an enlarged top view of Q.

[0217] As shown in FIG. 14A, a plurality of pixels 141 are arranged in a matrix in a display area 101. The display panel 100 is capable of full-color display using three colors: red, blue, and green. In this case, each of the pixels 141 displays one of the three colors. In addition to the above three colors, white and yellow can also be displayed. A region including the pixels 141 corresponds to the display region 101.

[0218] A wiring 142a and a wiring 142b are electrically connected to one pixel 141. Each of the wirings 142a crosses the wiring 142b and is electrically connected to the circuit 143a. The wirings 142b are electrically connected to the circuit 143b. and the circuit 143b is a circuit that functions as a scanning line driver circuit, and the other is a signal line The circuit functions as a driver circuit. Either or both may be omitted.

[0219] In FIG. 14A, a plurality of wirings 145 electrically connected to the circuit 143a or the circuit 143b are The wiring 145 is electrically connected to the FPC 123 in a region not shown. The circuit 143a and the circuit 143b have a function of supplying signals from the outside.

[0220] In FIG. 14A, a region including a circuit 143a, a circuit 143b, a plurality of wirings 145, etc. , corresponds to region 120 that blocks visible light.

[0221] In FIG. 14B, the area outside the pixel 141 provided at the edge transmits visible light. The visible light transmitting region 110 corresponds to the pixel 141, the wiring 142a, and the like. The pixel 141 does not have any members that block visible light, such as the wiring 142b. When the wiring 142a or the wiring 142b transmits visible light, the wiring 142a or the wiring 142b transmits visible light. The second electrode 14 may extend to the first electrode 14.

[0222] When the width of the region 110 that transmits visible light differs depending on the display panel, or when the width of the region 110 is different depending on the display panel, If the width of the hole varies depending on the location, the shortest length can be used as the width W. In FIG. 14B, the distance from the pixel 141 to the edge of the substrate (i.e., the area that transmits visible light) is The width (W) of the region 110 is the same in the vertical and horizontal directions of the drawing. One aspect is not limited to this.

[0223] Fig. 14(C) is a cross-sectional view taken along line A1-A2 in Fig. 14(B). The element 100 has a pair of substrates (substrate 151, substrate 152) each of which transmits visible light. The substrate 151 and the substrate 152 are bonded to each other by an adhesive layer 154. The substrate on which 41 and wiring 142b etc. are formed is referred to as substrate 151.

[0224] As shown in FIGS. 14B and 14C, when the pixel 141 is located at the extreme edge of the display area 101, In this case, the width W of the region 110 that transmits visible light is set to be 1 mm from the edge of the substrate 151 or the substrate 152 to the pixel. This is the length to the end of element 141.

[0225] The edge of the pixel 141 refers to the most edge of the members that block visible light included in the pixel 141. Or, a light-emitting organic compound is disposed between a pair of electrodes as a pixel 141. When a light-emitting element (also called an organic EL element) having a layer containing a substance is used, the pixel 141 The end is either an end of a lower electrode, an end of a layer containing a light-emitting organic compound, or an end of an upper electrode. may be also possible.

[0226] FIG. 15A is an example of an enlarged top view of the region Q. The position of the wiring 142a is different from that of FIG. B). Also, the cross-sectional view taken along the line B1-B2 in FIG. 15(A) is different from that in FIG. ), and a cross-sectional view taken along line C1-C2 is shown in FIG.

[0227] As shown in FIGS. 15(A) to 15(C), the wiring 142a is located at the extreme edge of the display area 101. In this case, the width W of the region 110 that transmits visible light is This is the length to the end of the wiring 142a. Note that, when the wiring 142a transmits visible light, The region in which the line 142a is provided may be included in the region 110 that transmits visible light.

[0228] Here, when the density of pixels provided in the display area 101 of the display panel 100 is high, When the display panels 100 are bonded together, misalignment may occur.

[0229] 16(A) to 16(C) show the display area 1 of the display panel 100a provided in the lower part. 01a and the display area 101b of the display panel 100b provided on the top. 16A to 16C are diagrams showing the positional relationship when the display area 101a and The display area 101a is partially visible. It is covered by a light-transmitting region 110b.

[0230] In FIG. 16A, adjacent pixels 141a and 141b are relatively different in one direction (Y direction). The arrow in the figure indicates the case where the display panel 100a is misaligned with the display panel 100. This shows a shifted direction relative to b.

[0231] In FIG. 16B, adjacent pixels 141a and 141b are relatively different in the vertical and horizontal directions. The figure shows the case where the object is misaligned in both the X and Y directions.

[0232] In the examples shown in Figs. 16(A) and 16(B), the horizontal and vertical shift distances are In such a case, the display area 101a and the display area 101b are smaller than one pixel. For image data corresponding to an image to be displayed on at least one of the two screens, the distance of the shift is By applying this correction, it is possible to maintain the display quality. In the case of a smaller deviation, it is preferable to perform correction so as to lower the gradation (luminance) of the pixel. On the other hand, when the distance between pixels becomes large, the pixel gradation (brightness) is increased. In addition, it is preferable that the display area 101b overlaps the display area 101a by one pixel or more. In the case of such a deviation, the pixel 141a located below the pixel 141b is not driven. It is preferable to correct the image data by shifting it by one column as shown above.

[0233] In FIG. 16C, pixels 141a and 141b, which should have been adjacent to each other, are relatively In this example, the pixel shifts by more than one pixel in one direction (Y direction). If a deviation of more than one minute occurs, the pixel that protrudes (the pixel with hatching added) is displayed. It is preferable to drive the actuator so that the deviation does not appear. The same applies when the deviation occurs in the X direction. do.

[0234] In order to prevent misalignment when bonding the multiple display panels 100 together, It is preferable to provide a marker or the like for alignment on the panel 100. A convex portion and a concave portion are formed on the surface of the display panel 100, and the convex portion is disposed in the area where the two display panels 100 overlap. The portion may be fitted into the recess.

[0235] In addition, in consideration of the accuracy of the positional deviation, the display area 101 of the display panel 100 is provided with a It is preferable to have more pixels than are used. For example, pixels along a scan line At least one of the pixel columns along the signal lines or the pixel columns along the signal lines is one or more columns, preferably three or more columns. It is preferable to provide more than five columns, more preferably more than the number of pixel columns used for display. stomach.

[0236] As described above, the image processing device according to one aspect of the present invention is configured to: A portion of the region that is visible through a region that transmits visible light, or a portion that is visible without passing through the region It is possible to carry out image processing to correct the gradation of the coordinates corresponding to at least one of the portions. This allows for a portion that is visible through the region that transmits visible light and a portion that is visible without passing through the region. Therefore, it is possible to suppress the difference in brightness between the part where the display panel is in contact with the other part. To realize a large-sized display system in which unevenness in display or brightness is suppressed and the unevenness in display is hardly noticeable. This can be done.

[0237] This embodiment mode can be combined with other embodiment modes as appropriate.

[0238] (Embodiment 2) In this embodiment, one of the display panels that can be used in the display system of one embodiment of the present invention will be described. An example of a light-emitting panel will be described with reference to the drawings.

[0239] In this embodiment, a light-emitting panel using an organic EL element is mainly illustrated. However, the panels that can be used in the display system are not limited to these.

[0240] <Example 1> FIG. 17A shows a plan view of the light-emitting panel. An example of a cross-sectional view of the region 110 that transmits visible light is shown in FIG. An example of a cross-sectional view is also shown. The light-emitting panel shown in Example 1 is a top panel using a color filter method. In this embodiment, the light-emitting panel is, for example, R A configuration in which one color is expressed using three sub-pixels of R, G, B, and W. A configuration in which one color is expressed by four sub-pixels of R, G, B, Y (yellow), or A configuration in which one color is expressed by a pixel can be applied. There are no particular limitations on the color elements, and RGB A color other than WY may be used, for example, cyan or magenta.

[0241] The light-emitting panel shown in FIG. 17(A) includes a region 110 that transmits visible light, a light-emitting section 804, a driving circuit, The region 110 that transmits visible light is adjacent to the light emitting portion 804. They are in contact with each other and are disposed along two sides of the light emitting portion 804.

[0242] The light-emitting panel shown in FIG. 17(C) includes a substrate 701, an adhesive layer 703, an insulating layer 705, and a plurality of transistors. A transistor, a conductive layer 857, an insulating layer 815, an insulating layer 817, a plurality of light-emitting elements, and an insulating layer 82 1, an adhesive layer 822, a colored layer 845, a light-shielding layer 847, an insulating layer 715, an adhesive layer 713, and a substrate The adhesive layer 822, the insulating layer 715, the adhesive layer 713, and the substrate 711 are visible. The light emitting portion 804 and the driver circuit portion 806 include light emitting elements and transistors. is sealed by substrate 701 , substrate 711 , and adhesive layer 822 .

[0243] The light emitting portion 804 is a transistor on the substrate 701 via the adhesive layer 703 and the insulating layer 705. The light-emitting element 830 includes a lower electrode 83 on an insulating layer 817. 1, an EL layer 833 on the lower electrode 831, and an upper electrode 835 on the EL layer 833. The lower electrode 831 is electrically connected to the source electrode or the drain electrode of the transistor 820. The end of the lower electrode 831 is covered with an insulating layer 821. Preferably, the upper electrode 835 is transparent to visible light.

[0244] The light-emitting section 804 includes a colored layer 845 overlapping the light-emitting element 830 and a layer overlapping the insulating layer 821. The light-shielding layer 847 is provided between the light-emitting element 830 and the colored layer 845. The adhesive layer 822 is provided between the light-emitting element 830 and the colored layer 845. It is being done.

[0245] The insulating layer 815 has an effect of suppressing the diffusion of impurities into the semiconductor that constitutes the transistor. The insulating layer 817 also has a planarizing function to reduce surface irregularities caused by the transistor. It is preferable to select an insulating layer having a

[0246] The driving circuit section 806 is a transistor formed on the substrate 701 via the adhesive layer 703 and the insulating layer 705. In FIG. 17C, one of the transistors included in the driver circuit portion 806 is 1 shows two transistors.

[0247] The insulating layer 705 and the substrate 701 are bonded together by an adhesive layer 703. 15 and the substrate 711 are bonded together by an adhesive layer 713. When a highly moisture-proof film is used for at least one of the light-emitting element 830 and the transistor 715, This can prevent impurities such as water from entering the stencil 820, thereby increasing the reliability of the light-emitting panel. This is preferable.

[0248] The conductive layer 857 transmits signals (video signals, clock signals, start signals, etc.) from the outside to the driving circuit section 806. The external input terminal is electrically connected to an external input terminal that transmits a signal (such as a start signal or a reset signal) or a potential. Here, an example is shown in which an FPC808 is provided as an external input terminal. In order to prevent this, the conductive layer 857 is made of the same material as the electrodes or wiring used in the light-emitting section or the driving circuit section. In this embodiment, the conductive layer 857 is preferably formed in a single process. This shows an example in which the electrode is fabricated using the same material and process as the electrode that constitutes it.

[0249] In the light-emitting panel shown in FIG. 17C, the FPC 808 is located on the substrate 711. 25 includes a substrate 711, an adhesive layer 713, an insulating layer 715, an adhesive layer 822, an insulating layer 817, and The conductive layer 857 is connected through an opening provided in the insulating layer 815. 5 is connected to the FPC 808. The FPC 808 and the conductive layer 857 are connected to each other via the connector 825. When the conductive layer 857 and the substrate 711 overlap, an opening is provided in the substrate 711. By using a substrate having an opening, the conductive layer 857, the connection body 825, and the FP C808 can be electrically connected.

[0250] FIG. 18 shows an example of a cross-sectional view of a display device having two light-emitting panels shown in FIG. 17(B) stacked on top of each other. In FIG. 18, the display area 101a of the lower light-emitting panel (light-emitting unit 80 shown in FIG. 17(B)) is 4) and a visible light blocking region 120a (corresponding to the driver circuit portion 806 and the like shown in FIG. 17(B) 17B), and the display area 101b of the upper light-emitting panel (light-emitting unit 804 shown in FIG. 17B). 17B) and a visible light transmitting region 110b (the visible light transmitting region shown in FIG. 17B) (corresponding to 110).

[0251] In the display device shown in FIG. 18, the light-emitting panel located on the display surface side (upper side) transmits visible light. The display area of ​​the lower light-emitting panel is adjacent to the display area 101b. The region 101a overlaps with the region 110b of the upper light-emitting panel that transmits visible light. Therefore, the non-display area between the display areas of the two overlapping light-emitting panels can be reduced, and This makes it difficult for users to notice the seams of the light-emitting panels. It is possible to realize a display device of this type.

[0252] In addition, the display device shown in FIG. 18 has a display region 101a and a region 110b that transmits visible light. The transparent layer 103 has a refractive index higher than that of air and transmits visible light. This can prevent air from entering between the display area 101a and the area 110b that transmits visible light, and thus reduces refraction. This can reduce reflections at the interface due to the difference in the refractive index. Alternatively, it is possible to suppress uneven brightness.

[0253] The light-transmitting layer 103 is formed on the surface of the substrate 711 of the lower light-emitting panel or the substrate 701 of the upper light-emitting panel. The display area 101a and the visible light transmitting area 110b may overlap on the entire surface. The substrate 711 or the light-transmitting layer 103 may overlap the region 12 that blocks visible light. It may be included in 0a.

[0254] For example, an adsorption film having an adsorption layer and a substrate laminated thereon is used to form an upper light-emitting panel. A laminated structure of the substrate 701 and the light-transmitting layer 103 can be formed.

[0255] <Example 2> FIG. 17B shows a plan view of the light-emitting panel. An example of a cross-sectional view of the light-emitting panel shown in Example 2 is different from Example 1. This is a top-emission type light-emitting panel that uses a color filter method. Only the points that differ from the first specific example will be described in detail, and the points in common with the first specific example will not be described.

[0256] FIG. 17B shows an example in which the light-emitting panel has a region 110 that transmits visible light over three sides. On two of the sides, the region 110 that transmits visible light is adjacent to the light emitting portion 804. is doing.

[0257] The light-emitting panel shown in FIG. 19(A) differs from the light-emitting panel shown in FIG. 17(C) in the following respects.

[0258] The light-emitting panel shown in FIG. 19A includes an insulating layer 817a and an insulating layer 817b. A conductive layer 856 is provided over the transistor 820. , and the lower electrode of the light-emitting element 830 are electrically connected via a conductive layer 856 .

[0259] The light-emitting panel shown in FIG. 19A has a spacer 823 on an insulating layer 821. By providing 823, the distance between the substrate 701 and the substrate 711 can be adjusted.

[0260] The light-emitting panel shown in FIG. 19A includes an overcoat that covers the colored layer 845 and the light-shielding layer 847. The space between the light emitting element 830 and the overcoat 849 is filled with an adhesive layer 822. is.

[0261] In addition, in the light-emitting panel shown in FIG. 19A, the substrate 701 and the substrate 711 have different sizes. The FPC 808 is located on the insulating layer 715 and does not overlap the substrate 711. The edge layer 715, the adhesive layer 822, the insulating layer 817a, the insulating layer 817b, and the insulating layer 815 are provided with The conductive layer 857 is connected to the substrate 711 through the opening. Therefore, the material of the substrate 711 is not limited.

[0262] As shown in FIG. 19B, the light emitting element 830 is made up of a lower electrode 831 and an EL layer 833. The optical adjustment layer 832 may be disposed between the first and second electrodes. It is preferable to use conductive materials. Color filter (colored layer) and microcavity structure By combining with the (optical adjustment layer), the display system according to one embodiment of the present invention can achieve high color purity. The thickness of the optical adjustment layer is changed according to the emission color of each sub-pixel. Can.

[0263] <Example 3> FIG. 17B shows a plan view of the light-emitting panel. An example of a cross-sectional view of the light-emitting panel shown in Example 3 is shown in FIG. It is a top-emission type light-emitting panel.

[0264] The light-emitting panel shown in FIG. 19(C) includes a substrate 701, an adhesive layer 703, an insulating layer 705, and a plurality of transistors. A transistor, a conductive layer 857, an insulating layer 815, an insulating layer 817, a plurality of light-emitting elements, and an insulating layer 82 1, a spacer 823, an adhesive layer 822, and a substrate 711. 11 transmits visible light.

[0265] In the light-emitting panel shown in FIG. 19C, the connector 825 is located on the insulating layer 815. The insulating layer 825 is connected to the conductive layer 857 through an opening provided in the insulating layer 815. The connection member 825 is connected to the FPC 808. Layer 857 provides the electrical connection.

[0266] <Example 4> FIG. 17B shows a plan view of the light-emitting panel. An example of a cross-sectional view of the light-emitting panel shown in Example 4 is a color filter type. This is a bottom emission type light emitting panel that uses the formula.

[0267] The light-emitting panel shown in FIG. 20(A) includes a substrate 701, an adhesive layer 703, an insulating layer 705, and a plurality of transistors. Transistor, conductive layer 857, insulating layer 815, colored layer 845, insulating layer 817a, insulating layer 81 7b, a conductive layer 856, a plurality of light-emitting elements, an insulating layer 821, an adhesive layer 822, and a substrate 711. The substrate 701, the adhesive layer 703, the insulating layer 705, the insulating layer 815, the insulating layer 817a, and and insulating layer 817b transmit visible light.

[0268] The light emitting portion 804 is a transistor on the substrate 701 via the adhesive layer 703 and the insulating layer 705. The light-emitting element 830 includes an insulating layer A lower electrode 831 on the lower electrode 831, an EL layer 833 on the lower electrode 831, and The lower electrode 831 is a source electrode of the transistor 820 or The end of the lower electrode 831 is covered with an insulating layer 821. The upper electrode 835 is preferably reflective to visible light. The lower electrode 831 is preferably transparent to visible light. The position where the colored layer 845 overlapping the light emitting element 830 is provided is not particularly limited. For example, Between the insulating layer 817a and the insulating layer 817b, or between the insulating layer 815 and the insulating layer 817a, etc. It is possible.

[0269] The driving circuit section 806 is a transistor formed on the substrate 701 via the adhesive layer 703 and the insulating layer 705. In FIG. 20A, two of the transistors included in the driver circuit portion 806 are 1 shows two transistors.

[0270] The insulating layer 705 and the substrate 701 are bonded together by an adhesive layer 703. When a film with high moisture resistance is used, the light-emitting element 830, the transistor 820, and the transistor 8 This is preferable because it can prevent impurities such as water from entering the light emitting panel 24 and improves the reliability of the light emitting panel. It is.

[0271] The conductive layer 857 serves as an external input terminal for transmitting a signal or potential from the outside to the driver circuit portion 806. Electrically connect. Here, an example is shown in which an FPC808 is provided as an external input terminal. In this example, the conductive layer 857 is made of the same material and in the same process as the conductive layer 856. Here is an example.

[0272] <Example 5> FIG. 20B shows an example of a light-emitting panel different from concrete examples 1 to 4.

[0273] The light-emitting panel shown in FIG. 20B includes a substrate 701, an adhesive layer 703, an insulating layer 705, a conductive layer 8, and a 14, conductive layer 857a, conductive layer 857b, light emitting element 830, insulating layer 821, adhesive layer 822 , and a substrate 711.

[0274] The conductive layer 857a and the conductive layer 857b are external connection electrodes of the light-emitting panel, and are electrically connected to an FPC or the like. It can be electrically connected.

[0275] The light emitting element 830 includes a lower electrode 831, an EL layer 833, and an upper electrode 835. The end of the electrode 831 is covered with an insulating layer 821. The light emitting element 830 is a bottom emitter. The type is a top emission type, a dual emission type, or a top emission type. The electrode, the substrate, the insulating layer, etc. are each transparent to visible light. Make an electrical connection.

[0276] The substrate from which the light is extracted is equipped with a hemispherical lens, a microlens array, The substrate may have a film having a concave-convex structure, a light diffusing film, etc. For example, a resin substrate. The lens or film is placed on the substrate, and the refractive index is the same as that of the substrate or the lens or film. By bonding the substrate with an adhesive having a light extraction structure, a substrate having a light extraction structure is formed. can be done.

[0277] The conductive layer 814 is not necessarily required, but the voltage drop caused by the resistance of the lower electrode 831 may be reduced. For the same purpose, the upper electrode 835 and the electric A conductive layer for electrically connecting the insulating layer 821, the EL layer 833, the upper electrode 835, or the like is provided on the insulating layer 821, the EL layer 833, the upper electrode 835, or the like. It is okay.

[0278] The conductive layer 814 may be made of copper, titanium, tantalum, tungsten, molybdenum, chromium, or neodymium. Materials selected from the group consisting of , scandium, nickel, and aluminum, or alloys containing these as their main components. The conductive layer 814 can be formed of a single layer or a stacked layer using a gold material or the like. For example, it can be 0.1 μm or more and 3 μm or less, and preferably 0.1 μm or more and 0. It is less than 5 μm.

[0279] <Examples of materials> Next, materials that can be used for the light-emitting panel will be described. The description of the configuration may be omitted.

[0280] The substrate can be made of a material such as glass, quartz, organic resin, metal, or alloy. The substrate on the side from which light from the element is extracted is made of a material that transmits the light.

[0281] In particular, it is preferable to use a flexible substrate. For example, an organic resin or a material having a certain degree of flexibility is used. thickness of glass, metal, or alloy may be used.

[0282] Since organic resin has a smaller specific gravity than glass, using organic resin as a flexible substrate This is preferable because it allows the light-emitting panel to be lighter than when glass is used.

[0283] It is preferable to use a highly tough material for the substrate. This makes it possible to improve impact resistance and prevent breakage. For example, organic resin substrates or thin metal substrates can be used. By using a metal or alloy substrate, it is lighter and less likely to break than a glass substrate. This makes it possible to realize a light-emitting panel that is difficult to use.

[0284] Metallic and alloy materials each have high thermal conductivity and can easily conduct heat throughout the substrate. Therefore, it is possible to suppress a local temperature rise in the light-emitting panel, which is preferable. The thickness of the substrate made of gold material is preferably 10 μm to 200 μm, and more preferably 20 μm to 500 μm. It is more preferable that the thickness is 0 μm or less.

[0285] The material constituting the metal substrate and the alloy substrate is not particularly limited. For example, aluminum The preferred materials are aluminum, copper, nickel, aluminum alloys, stainless steel, and other metal alloys. It can be used appropriately.

[0286] In addition, if a material with high thermal emissivity is used for the substrate, the surface temperature of the light-emitting panel can be prevented from becoming too high. For example, the substrate can be thermally bonded to a metal substrate, and the damage or deterioration of the reliability of the light-emitting panel can be suppressed. A stack of high emissivity layers (which can be metal oxide or ceramic materials, for example) The structure may also be used.

[0287] As a material having flexibility and light transmission, for example, the protective substrate 13 exemplified in the first embodiment can be used. There are two materials.

[0288] As for the flexible substrate, the layer using the above material is used as a hard cover to protect the surface of the device from scratches. A layer of a material capable of dispersing pressure (e.g., an arran layer) The insulating layer may be laminated with a layer of a polymeric mide resin or the like.

[0289] The flexible substrate may be used by laminating a plurality of layers. This improves the barrier properties against water or oxygen, making it possible to provide a highly reliable light-emitting panel. can.

[0290] For example, a flexible substrate in which a glass layer, an adhesive layer, and an organic resin layer are laminated from the side closer to the light emitting element. The thickness of the glass layer is preferably 20 μm or more and 200 μm or less. The thickness of the glass layer is 25 μm or more and 100 μm or less. The organic resin layer can be made thicker than 1 mm thick. The thickness of the thin film is set to 0 μm or more and 200 μm or less, and preferably 20 μm or more and 50 μm or less. By providing a resin layer, the glass layer is prevented from breaking or cracking, and mechanical strength is improved. By applying such a composite material of glass material and organic resin to a substrate, This makes it possible to provide a highly reliable and flexible light-emitting panel.

[0291] The adhesive layer may be a photo-curable adhesive such as an ultraviolet curable adhesive, a reactive curable adhesive, a heat curable adhesive, or an antibacterial adhesive. Various curing adhesives such as epoxy adhesives can be used. Resin, acrylic resin, silicone resin, phenol resin, polyimide resin, imide resin , PVC (polyvinyl chloride) resin, PVB (polyvinyl butyral) resin, EVA ( Ethylene vinyl acetate resins, etc. In particular, epoxy resins, etc., have low moisture permeability. The material is preferably a two-part mixed resin. Also, an adhesive sheet or the like may be used. Good too.

[0292] The resin may contain a desiccant. For example, an oxide of an alkaline earth metal (oxide The material used is one that adsorbs moisture by chemical adsorption, such as calcium or barium oxide. Alternatively, it can be attached by physical adsorption, such as with zeolites or silica gel. Moisture-absorbing materials may also be used. Desiccants are included to absorb moisture and other impurities. This is preferable because it is possible to suppress penetration into the elements and improve the reliability of the light-emitting panel.

[0293] In addition, by mixing a filler having a high refractive index or a light scattering material into the resin, a light emitting element can be formed. For example, titanium oxide, barium oxide, Zeolite, zirconium, etc. can be used.

[0294] The insulating layers 705 and 715 can each be formed using an insulating film having high moisture resistance. Alternatively, the insulating layers 705 and 715 may each be formed to prevent impurities from entering the light-emitting element. It is preferable that the material has a function of preventing diffusion.

[0295] Highly moisture-proof insulating films include those containing nitrogen and silicon, such as silicon nitride film and silicon oxide nitride film. 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.

[0296] For example, the water vapor permeability of a highly moisture-resistant insulating film is 1×10 -5 [g / (m 2 ·day)] Less than or equal to 1×10 -6 [g / (m 2 ·day)] or less, preferably 1×10 -7 [g / (m 2 ·day)] or less, and more preferably 1×10 -8 [g / (m 2 ·da y)] or less.

[0297] In the light-emitting panel, at least one of the insulating layer 705 and the insulating layer 715 is a light-emitting layer for the light-emitting element. The insulating layer 705 or the insulating layer 715 must transmit light. The insulating layer on the side where the light is incident has a higher transmittance than the other insulating layer in the wavelength range of 400 nm to 800 nm. It is preferable that the average transmittance of the film is high.

[0298] Insulating layer 705 and insulating layer 715 may each contain oxygen, nitrogen, and silicon. For example, the insulating layer 705 and the insulating layer 715 each contain silicon oxynitride. In addition, the insulating layer 705 and the insulating layer 715 are preferably made of silicon nitride. In addition, the insulating layer 705 and the insulating layer 715 preferably have a thickness of 100 nm or a thickness of 100 nm. Each of the silicon oxynitride films has a stacked structure of a silicon nitride film and a silicon oxynitride film. It is preferable that the silicon oxide film and the silicon nitride film are in contact with each other. By alternately laminating the PTFE film and the PTFE film, the anti-phase interference occurs mainly in the visible range. The visible light transmittance of the layer can be increased.

[0299] The structure of the transistors in the light-emitting panel is not particularly limited. For example, The transistor may be a top gate type or an inverted staggered type. The transistor may have either a bottom gate type or a bottom gate type structure. The conductive material is not particularly limited, and examples thereof include silicon, germanium, and organic semiconductors. Or, metal oxides containing at least one of indium, gallium, and zinc, such as In-Ga-Zn metal oxides. An oxide semiconductor including at least one of the above may be used.

[0300] 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, the transistor This is preferable because it can suppress deterioration of the star characteristics.

[0301] In one embodiment of the present invention, a semiconductor material for a transistor is a CAAC-OS (CA xis Aligned Crystalline Oxide Semiconductor CAAC-OS has fewer defect levels than amorphous materials. In addition, the grain boundaries of the CAAC-OS are well-defined, which improves the reliability of the transistor. This makes it possible to form a stable and uniform film over a large area. In addition, when a flexible light-emitting device is bent, the stress caused by the bending causes the CAAC-OS film to crack. It is less likely to cause cracks.

[0302] CAAC-OS is a crystalline oxide semiconductor whose c-axis is aligned approximately perpendicular to the film surface. Another crystal structure of oxide semiconductors is the nanoscale microcrystal aggregate, n It is clear that there are various structures that are different from single crystals, such as ano-crystal (nc). CAAC-OS has lower crystallinity than single crystals and higher crystallinity than nc. stomach.

[0303] In order to stabilize the characteristics of the transistor, it is preferable to provide an undercoat film. Inorganic films such as silicon oxide film, silicon nitride film, silicon oxynitride film, and silicon nitride oxide film The insulating film can be formed in a single layer or a multilayer structure. CVD (Chemical Vapor Deposition) method (Plasma CVD method , thermal CVD method, MOCVD (Metal Organic CVD) method, etc.), ALD ( Formed using Atomic Layer Deposition (ALD), coating, printing, etc. If the undercoat film is not necessary, it is not necessary to provide it. In this case, the insulating layer 705 is It can also serve as an underlying film for a transistor.

[0304] The light emitting element may be a self-emitting element, and the luminance may be controlled by a current or a voltage. The category includes devices that are controlled by light emitting diodes (LEDs), organic EL elements, inorganic EL elements, etc. can be used.

[0305] The light-emitting elements are top emission type, bottom emission type, and dual emission type. For the electrode from which light is extracted, a conductive film that transmits visible light is used. 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. .

[0306] The conductive film that transmits visible light is, for example, indium oxide, indium tin oxide (ITO). Indium Tin Oxide, Indium Zinc Oxide, Zinc Oxide (ZnO), Gallium It can be formed by using zinc oxide doped with sulphur. It can also be formed by using gold, silver, platinum, magnesium Nesium, nickel, tungsten, chromium, molybdenum, iron, cobalt, copper, palladium Metallic materials such as aluminum or titanium, alloys containing these metallic materials, or nitrogen compounds of these metallic materials Titanium nitride, for example, can also be used by forming it thin enough to have light transmission. A laminated film of the above materials can be used as the conductive layer. For example, silver and magenta A laminated film of magnesium alloy and ITO is preferred because it can increase the electrical conductivity. In addition, graphene or the like may be used.

[0307] The conductive film that reflects visible light is made of, for example, aluminum, gold, platinum, silver, nickel, tungsten, etc. Metallic materials such as zinc, chromium, molybdenum, iron, cobalt, copper, or palladium; An alloy containing these metal materials can be used. Tungsten, neodymium, germanium, etc. may be added. Aluminum alloy, aluminum-nickel alloy, aluminum-neodymium alloy, aluminum Aluminum-containing alloys, such as aluminum-nickel-lanthanum alloys (Al-Ni-La) (aluminum alloy), silver-copper alloy, silver-palladium-copper alloy (Ag-Pd-Cu, It is formed using an alloy containing silver, such as an alloy of silver and magnesium. An alloy containing silver and copper is preferable because of its high heat resistance. By laminating a metal film or a metal oxide film in contact with the film, oxidation of the aluminum alloy film is suppressed. The metal film and metal oxide film can be made of titanium, titanium oxide, etc. In addition, the conductive film that transmits visible light and a film made of a metal material may be laminated. For example, a laminated film of silver and ITO, or a laminated film of silver-magnesium alloy and ITO, etc. It is possible.

[0308] The electrodes can be formed by vapor deposition or sputtering. Alternatively, a discharge method such as an inkjet method, a printing method such as a screen printing method, or a plating method may be used. It can be formed by

[0309] 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 the light is injected from the anode side to the EL layer 833, holes are injected from the cathode 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. do.

[0310] The EL layer 833 has at least a light-emitting layer. The EL layer 833 has a positive electrode as a layer 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 , a substance with high electron injection properties, or a bipolar substance (a substance with high electron transport properties and hole transport properties) The film may further include a layer containing a polymer (such as a polymeric material).

[0311] 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 each be formed by deposition (vacuum deposition) The method may include a transfer method, a printing method, an ink-jet method, a coating method, etc. do.

[0312] The light emitting element 830 may contain two or more luminescent materials, which may result in, for example, white light emission. For example, two or more luminescent materials may be used that emit complementary colors. By selecting a light-emitting material so as to satisfy the above relationship, white light can be obtained. For example, Luminescent materials that emit light such as R (red), G (green), B (blue), Y (yellow), or O (orange), or It is possible to use a luminescent material that emits light containing two or more of the R, G, and B spectral components. 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, the emission spectrum of the light emitting element 830 is preferably in the visible region (for example, 350 nm or more but not exceeding 750 nm, or 400 nm or more but not exceeding 800 nm, etc. It is preferable that it has a peak.

[0313] The EL layer 833 may have a plurality of light-emitting layers. The 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 light-emitting layer and the phosphorescent light-emitting layer.

[0314] The separation layer is, for example, a layer for converting the excited state of the phosphorescent material generated in the phosphorescent-emitting layer into the fluorescent material in the fluorescent-emitting layer. To prevent energy transfer (especially triplet energy transfer) to materials via the Dexter mechanism The separation layer may be provided with a thickness of about several nm. m or more and less than 20 nm, or 1 nm or more and less than 10 nm, or 1 nm or more and less than 5 nm The separating layer may be made of a single material (preferably a bipolar material) or a plurality of materials (preferably a Preferably, the material includes a hole transporting material and an electron transporting material.

[0315] The separation layer may be formed using a material contained in the light-emitting layer that is in contact with the separation layer. This facilitates the fabrication of 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), In other words, the separation layer may be formed of a phosphorescent material and an assist material. The phosphorescent layer has a region that does not contain a phosphorescent material, and the phosphorescent layer has a region that contains a phosphorescent material. It is possible to deposit the separation layer and the phosphorescent light-emitting layer with or without the phosphorescent material. By forming the separation layer and the phosphorescent layer in the same chamber, it becomes possible to form the separation layer and the phosphorescent layer in the same chamber. This makes it possible to reduce manufacturing costs.

[0316] The light-emitting element 830 may be a single element having one EL layer, or a charge generating It may also be a tandem element having a plurality of EL layers stacked with an intervening layer.

[0317] It is preferable that the light emitting element is 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 light emitting panel. Specifically, as described above, the insulating layer 705 and the insulating layer 715 can be formed of a moisture-proof When a high-insulation film is used, the light-emitting element is placed between a pair of highly moisture-proof insulation films, and the light-emitting panel This can suppress the deterioration of reliability.

[0318] The insulating layer 815 may be, for example, a silicon oxide film, a silicon oxynitride film, or an aluminum oxide film. In addition, the insulating layer 817, the insulating layer 817a, and The insulating layer 817b may be made of, for example, polyimide, acrylic, polyamide, polyimide acryl, etc. Organic materials such as amide and benzocyclobutene resins can be used. A dielectric constant material (low-k material) can be used. In addition, multiple insulating films can be stacked. In this way, each insulating layer may be formed.

[0319] The insulating layer 821 is formed using an organic insulating material or an inorganic insulating material. For example, polyimide resin, polyamide resin, acrylic resin, siloxane resin, epoxy Resin, phenolic resin, etc. can be used. In particular, photosensitive resin material is used, and the lower part An opening is formed on the electrode 831, and the sidewall of the opening has a continuous curvature. It is preferable to form the surface so as to have an inclined surface.

[0320] The method for forming the insulating layer 821 is not particularly limited. For example, the method may be a photolithography method, a sputtering method, or the like. ink jet method, deposition method, droplet ejection method (inkjet method, etc.), printing method (screen printing, offset printing, etc.) Printing, etc. can be used.

[0321] The spacer 823 can be formed using an inorganic insulating material, an organic insulating material, a metal material, or the like. For example, inorganic insulating materials or organic insulating materials can be used for the insulating layer. Examples of metal materials that can be used include titanium and aluminum. The spacer 823 containing a conductive material and the upper electrode 835 are electrically connected to each other. This makes it possible to suppress a potential drop caused by the resistance of the upper electrode 835. The shape of the 23 may be either a forward taper shape or a reverse taper shape.

[0322] A light-emitting panel that functions as an electrode or wiring of a transistor, or an auxiliary electrode of a light-emitting element, etc. The conductive layer used in the conductor may be, for example, molybdenum, titanium, chromium, tantalum, tungsten, Metallic materials such as aluminum, copper, neodymium, and scandium, or alloy materials containing these elements The conductive layer can be formed of a single layer or a laminated layer using a conductive material. The conductive metal oxide may be indium oxide (In2O 3, etc.), tin oxide (SnO2, etc.), ZnO, ITO, indium zinc oxide (In2O3 -ZnO, etc.) or these metal oxide materials containing silicon oxide can be used. can.

[0323] The colored layer is a colored layer that transmits light of a specific wavelength band. For example, red, green, blue, or A color filter that transmits light in the yellow wavelength range can be used. Using various materials, printing, inkjet, photolithography and etching The white sub-pixel is formed at a desired position by a bonding method or the like. Alternatively, a transparent resin may be placed on the plate.

[0324] 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 provided with a 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. A material that blocks light emitted from the optical element can be used, for example, a metal material, a pigment, or In the case of the black matrix, a resin material containing a dye can be used. If the layer is provided in an area other than the light-emitting area, such as the driving circuit area, unintended light leakage due to guided light, etc. This is preferable because it can suppress this.

[0325] In addition, an overcoat may be provided to cover the colored layer and the light-shielding layer. This makes it possible to prevent impurities contained in the colored layer from diffusing into the light emitting element. The bar coat is made of a material that transmits light emitted from the light emitting element, such as a silicon nitride film. Inorganic insulating films such as silicon oxide films, or organic insulating films such as acrylic films and polyimide films are used. Alternatively, the insulating film may have a laminated structure of an organic insulating film and an inorganic insulating film.

[0326] 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 ITO film or a metal film such as an Ag film that is thin enough to have light transmission properties is used. It is preferred to use a membrane.

[0327] As connectors, various anisotropic conductive films (ACFs) are used. Conductive Film), or Anisotropic Conductive Paste (ACP) c Conductive Paste) can be used.

[0328] As described above, the display system according to one embodiment of the present invention includes a light-emitting panel, a display panel, a touch panel, and a Various panels such as glass panels can be applied.

[0329] Examples of display elements include EL elements (EL elements containing organic and inorganic materials, organic EL elements, Inorganic EL elements), LEDs (white LEDs, red LEDs, green LEDs, blue LEDs, etc.), liquid Using crystal elements, electrophoretic elements, and MEMS (microelectromechanical systems) Examples of such display elements include:

[0330] Note that the light-emitting panel of one embodiment of the present invention may be used as a display panel or a lighting panel. For example, it may be used as a light source such as a backlight or a frontlight, i.e., a display. It may also be utilized as a lighting panel for the panel.

[0331] As described above, the image processing device and the device having the region transmitting visible light as exemplified in this embodiment are By using a light-emitting panel that can be used with a touch screen, the seams of the light-emitting panel are less noticeable, reducing display unevenness. Therefore, a large-sized display system with high image quality can be realized.

[0332] This embodiment mode can be combined with other embodiment modes as appropriate.

[0333] (Embodiment 3) In this embodiment, one of the display panels that can be used in the display system of one embodiment of the present invention will be described. The touch panel, which is an example of the touch panel, will be described with reference to the drawings. Among the components, the same components as those of the light-emitting panel described in the second embodiment are described above. In addition, in this embodiment, a touch panel using a light-emitting element is These are examples, but are not limited to these.

[0334] <Configuration example 1> FIG. 21(A) is a top view of a touch panel. FIG. 21(B) is a top view of a touch panel along the dashed line A in FIG. 21(C) is a cross-sectional view taken along the dashed line E in FIG. -F cross-sectional view.

[0335] The touch panel 390 shown in FIG. 21(A) includes a display unit 301 (which also serves as an input unit), a scanning line driver, driving circuit 303g(1), imaging pixel driving circuit 303g(2), image signal line driving circuit 303s The image pickup device 303 includes an image pickup signal line driver circuit 303s(1) and an image pickup signal line driver circuit 303s(2).

[0336] The display unit 301 includes a plurality of pixels 302 and a plurality of imaging pixels 308 .

[0337] The pixel 302 includes a number of sub-pixels, each of which includes a light-emitting element and a pixel circuit.

[0338] The pixel circuit can supply power to drive the light emitting element. The pixel circuit outputs a selection signal The pixel circuit is electrically connected to a wiring that can supply an image signal. The semiconductor device is electrically connected to a wiring that can be connected to the semiconductor device.

[0339] The scanning line driver circuit 303g(1) can supply a selection signal to the pixel 302.

[0340] The image signal line driver circuit 303 s ( 1 ) can supply an image signal to the pixel 302 .

[0341] A touch sensor can be configured using the imaging pixels 308. 08 can detect a finger or the like touching the display unit 301.

[0342] The imaging pixel 308 includes a photoelectric conversion element and an imaging pixel circuit.

[0343] The imaging pixel circuit can drive the photoelectric conversion element. The imaging pixel circuit provides a control signal. The imaging pixel circuit is electrically connected to a wiring that can supply a power supply potential. The semiconductor device is electrically connected to a wiring that can be connected to the semiconductor device.

[0344] 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; and a signal that can detect light by the imaging pixel circuit. Examples of such signals include a signal that can determine the time at which the signal is detected.

[0345] The imaging pixel drive circuit 303g(2) can supply a control signal to the imaging pixel 308. .

[0346] The imaging signal line driving circuit 303s(2) can read out imaging signals.

[0347] As shown in FIGS. 21B and 21C, the touch panel 390 includes a substrate 701, an adhesive layer 703, and a , an insulating layer 705, a substrate 711, an adhesive layer 713, and an insulating layer 715. The 01 and the substrate 711 are attached with an adhesive layer 360 .

[0348] The substrate 701 and the insulating layer 705 are bonded together with an adhesive layer 703. The border layer 715 is attached with an adhesive layer 713 .

[0349] For materials that can be used for the substrate, adhesive layer, and insulating layer, see embodiment 2. It is possible.

[0350] The pixel 302 includes a subpixel 302R, a subpixel 302G, and a subpixel 302B (FIG. 21 (C)).

[0351] For example, the sub-pixel 302R includes a light-emitting element 350R and a pixel circuit. The subpixel 3 also includes a transistor 302t that can supply power to the subpixel 350R. 02R further includes an optical element (for example, a colored layer 367R that transmits red light).

[0352] The light emitting element 350R includes a lower electrode 351R, an EL layer 353, and an upper electrode 352 in this order. It is laminated (Figure 21(C)).

[0353] The EL layer 353 includes a first EL layer 353a, an intermediate layer 354, and a second EL layer 353b. The layers are laminated in this order.

[0354] In order to efficiently extract light of a specific wavelength, the light-emitting element 350R is equipped with a micro-cavity. Specifically, it is possible to arrange the T-structure so that a specific light can be efficiently extracted. The EL layer may be disposed between a film that reflects visible light and a semi-reflective / semi-transmissive film that are disposed in the substrate.

[0355] For example, the subpixel 302R includes a light emitting element 350R and an adhesive layer 360 in contact with a color layer 367R. Yes.

[0356] The colored layer 367R is located so as to overlap the light emitting element 350R. A part of the light emitted by the adhesive layer 360 passes through the colored layer 367R and is reflected by the adhesive layer 360 as shown by the arrows in the figure. The light is emitted to the outside of the subpixel 302R as shown.

[0357] The touch panel 390 includes a light-shielding layer 367BM. The light-shielding layer 367BM is a colored layer (e.g., For example, the colored layer 367R is provided so as to surround the colored layer 367.

[0358] The touch panel 390 has an anti-reflection layer 367p at a position overlapping the display unit 301. As the blocking layer 367p, for example, a circular polarizing plate can be used.

[0359] The touch panel 390 includes an insulating layer 321. The insulating layer 321 includes a transistor 302t, etc. The insulating layer 321 is used to flatten unevenness caused by the pixel circuits or the imaging pixel circuits. In addition, the layer can be used as a layer for diffusing impurities into the transistor 302t, etc. It is preferable to cover the transistor 302t and the like with an insulating layer that can suppress diffusion.

[0360] The touch panel 390 has a partition wall 328 that overlaps an end of the lower electrode 351R. A spacer 329 for controlling the distance between the plate 701 and the substrate 711 is provided on the partition wall 328 .

[0361] The image signal line driver circuit 303s(1) includes a transistor 303t and a capacitor 303c. The driver circuit and the pixel circuit can be formed on the same substrate in the same process. As shown in FIG. 3B, 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. They may be provided with different potentials. The gate 304 may be provided to the transistor 308t, the transistor 302t, and the like.

[0362] The imaging pixel 308 includes a photoelectric conversion element 308p and an imaging pixel circuit. The photoelectric conversion element 308p can detect light irradiated thereto. Includes Zysta 308t.

[0363] For example, a pin-type photodiode can be used as the photoelectric conversion element 308p.

[0364] The touch panel 390 has wiring 311 through which a signal can be supplied, and a terminal 319 is disposed. The FP 311 can supply signals such as image signals and synchronization signals. C309 is electrically connected to terminal 319. FPC309 is a printed wiring board ( A PWB may be attached.

[0365] In addition, transistors such as transistor 302t, transistor 303t, and transistor 308t The resistors can be formed in the same process, or they can be formed in different processes. Good too.

[0366] <Configuration example 2> 22(A) and (B) are perspective views of the touch panel 505. FIG. 23 is a cross-sectional view taken along dashed line X1-X2 in FIG. 22(A). do.

[0367] As shown in FIGS. 22A and 22B, the touch panel 505 includes a display unit 501 and a scanning line drive The touch panel 505 includes a circuit 303g(1) and a touch sensor 595. , substrate 701, substrate 711, and substrate 590.

[0368] The touch panel 505 includes a plurality of pixels and a plurality of wirings 311. The wirings 311 can supply signals to the pixels. The wire is routed around the FPC 509(1), and a part of it constitutes the terminal 319. Make an electrical connection.

[0369] The touch panel 505 includes a touch sensor 595 and a plurality of wirings 598. 598 is electrically connected to the touch sensor 595. The wiring 598 is The terminal is made of FPC509(2 ) is electrically connected to the back side ( The electrodes and wiring of the touch sensor 595 provided on the surface facing the substrate 701 are indicated by solid lines. It shows.

[0370] For example, a capacitive touch sensor can be used as 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 capacitive touch sensor is applied.

[0371] The projected capacitive touch sensor is classified into two types: self-capacitance and mutual capacitance. The use of such a method is preferable since it enables simultaneous multipoint detection.

[0372] The touch sensor 595 can detect the proximity or contact of a detection target such as a finger. A variety of sensors can be applied.

[0373] The projected capacitive touch sensor 595 has an electrode 591 and an electrode 592. 91 is electrically connected to one of the multiple wirings 598, and the electrode 592 is In electrical connection with any of the others.

[0374] As shown in FIGS. 22(A) and 22(B), the electrode 592 is a plurality of electrodes repeatedly arranged in one direction. It has a shape of quadrilaterals connected at the corners.

[0375] The electrode 591 is quadrilateral and is repeatedly arranged in a direction intersecting the direction in which the electrodes 592 extend. In addition, the multiple electrodes 591 are not necessarily arranged in a direction perpendicular to one electrode 592. The electrodes do not necessarily have to be spaced apart from each other and may be disposed at an angle less than 90 degrees.

[0376] The wiring 594 is provided so as to intersect with the electrodes 592. The wiring 594 is connected to one of the electrodes 592. The two sandwiching electrodes 591 are electrically connected. At this time, the intersection of the electrode 592 and the wiring 594 It is preferable that the area of ​​the electrode be as small as possible. As a result, the area of ​​the touch sensor 595 can be reduced, and the unevenness of the light transmittance can be reduced. It is possible to reduce unevenness in the brightness of the transmitted light.

[0377] The shapes of the electrodes 591 and 592 are not limited to this, and may take various shapes. For example, The electrodes 591 are arranged so that there are as few gaps as possible, and the electrodes 59 are connected to each other via an insulating layer. 2 may be provided at intervals so as to leave an area that does not overlap with the electrode 591. At this time, a dummy electrode that is electrically insulated from the adjacent two electrodes 592 is provided between the adjacent two electrodes 592. Providing a pole is preferable because it makes it possible to reduce the area of ​​the region with different light transmittance.

[0378] As shown in FIG. 23A, the touch panel 505 includes a substrate 701, an adhesive layer 703, an insulating layer 705, a substrate 711, an adhesive layer 713, and an insulating layer 715. The substrates 711 are attached with an adhesive layer 360 .

[0379] The adhesive layer 597 adheres the substrate 590 to the substrate 501 so that the touch sensor 595 overlaps the display unit 501. The adhesive layer 597 is attached to the substrate 711. The adhesive layer 597 is light-transmitting.

[0380] The electrode 591 and the electrode 592 are formed using a light-transmitting conductive material. Examples of conductive materials that can be used include indium oxide, indium tin oxide, indium zinc oxide, Conductive oxides such as zinc oxide and zinc oxide doped with gallium can be used. Alternatively, a film containing graphene may be used. The film containing graphene may be formed in a film shape, for example. The graphene oxide film can be formed by reducing the graphene oxide film. and a method of applying heat.

[0381] In addition, the conductive films such as the electrodes 591, the electrodes 592, and the wiring 594 constitute a touch panel. It is desirable to use materials with low resistance for wiring or electrodes. Indium zinc oxide, ZnO, silver, copper, aluminum, carbon nanotubes, graphene Furthermore, very thin (for example, a few nanometers in diameter) Metal nanowires made of multiple conductors may also be used. Wires, Cu nanowires, Al nanowires, etc. may also be used. In the case of Ag nanowires, For example, the light transmittance is 89% or more, and the sheet resistance is 40Ω / □ to 100Ω / □. In addition, since the light transmittance is high, it is possible to realize an electrode for a display element, e.g. Metal nanowires, carbon nanotubes, graphene, etc. are used for pixel electrodes or common electrodes. It's fine.

[0382] After forming a film of a light-transmitting conductive material on a substrate 590 by a sputtering method, By using various patterning techniques such as lithography, unnecessary parts are removed and the electrodes 591 are formed. And electrode 592 can be formed.

[0383] The electrodes 591 and 592 are covered with an insulating layer 593. A hole is provided in the insulating layer 593, and a wiring 594 electrically connects the adjacent electrodes 591. A photoconductive material is preferred for the wiring 594 because it can increase the aperture ratio of the touch panel. In addition, a material having a higher conductivity than the electrodes 591 and 592 can be used. Since the air resistance can be reduced, it can be suitably used for the wiring 594.

[0384] 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.

[0385] Furthermore, the connection layer 599 electrically connects the wiring 598 and the FPC 509(2).

[0386] The display unit 501 has a plurality of pixels arranged in a matrix. Since the above is the case, the description will be omitted.

[0387] Various transistors can be used in touch panels. Bottom-gate transistor The configuration when applying the above is shown in Figures 23(A) and (B).

[0388] For example, a semiconductor layer containing an oxide semiconductor, amorphous silicon, or the like is This can be applied to the transistor 302t and the transistor 303t.

[0389] For example, a semiconductor layer containing polycrystalline silicon crystallized by a process such as laser annealing is applied to the transistor 302t and the transistor 303t shown in FIG. can be done.

[0390] FIG. 23C shows a structure in which a top-gate transistor is used.

[0391] For example, a polycrystalline silicon film or a single crystal silicon film transferred from a single crystal silicon substrate, etc. The semiconductor layer including the can be applied.

[0392] <Configuration example 3> 24 is a cross-sectional view of touch panel 505B. 505B is a side where an image is displayed on the side where a transistor is provided and a touch sensor is displayed. The touch panel 505 of the second configuration example differs from the touch panel 505 of the second configuration example in that the display unit is provided on the substrate 701 side. Different configurations are described in detail here, and where similar configurations can be used, the above The above explanation is incorporated herein by reference.

[0393] The colored layer 367R is located so as to overlap the light emitting element 350R. The 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 travels in the direction of the arrow shown in the figure. The light is emitted to the outside of touch panel 505B in the opposite direction.

[0394] The touch panel 505B has a light-shielding layer 367BM in the light-emitting direction. The BM is provided so as to surround a colored layer (for example, the colored layer 367R).

[0395] The touch sensor 595 is provided on the substrate 701 side, not on the substrate 711 side (FIG. 24( A)).

[0396] The adhesive layer 597 is formed by bonding the substrate 590 to the substrate 701 so that the touch sensor 595 overlaps the display unit. The adhesive layer 597 is light-transmitting.

[0397] A configuration in which a bottom gate type transistor is applied to the display unit 501 is shown in FIG. As shown in (A) and (B).

[0398] For example, a semiconductor layer containing an oxide semiconductor, amorphous silicon, or the like is This can be applied to the transistor 302t and the transistor 303t.

[0399] For example, a semiconductor layer containing polycrystalline silicon or the like is used as the transistor 302t shown in FIG. and transistor 303t.

[0400] FIG. 24C shows a structure in the case where a top-gate transistor is used.

[0401] For example, a polycrystalline silicon film or a single crystal silicon film transferred from a single crystal silicon substrate, etc. The semiconductor layer including the can be applied.

[0402] <Configuration Example 4> As shown in FIG. 25, the touch panel 500TP has a display unit 500 and an input unit 600 superimposed thereon. 26 is a cross-sectional view taken along dashed line Z1-Z2 shown in FIG.

[0403] The individual elements constituting the touch panel 500TP will be described below. The components cannot be clearly separated, and one component may serve as another component, or may be a part of another component. In addition, the touch panel 500T in which the input unit 600 is superimposed on the display unit 500 may be used. P is also called a touch panel.

[0404] The input section 600 has a plurality of detection units 602 arranged in a matrix. The input section 600 includes a selection signal line G1, a control line RES, a signal line DL, and the like.

[0405] The selection signal line G1 and the control line RES are arranged in the row direction (indicated by the arrow R in the figure). The signal lines DL are electrically connected to the plurality of detection units 602 arranged in the column direction (indicated by the arrows in the figure). The sensor 602 is electrically connected to a plurality of sensing units 602 arranged at a position indicated by a symbol C.

[0406] The detection unit 602 detects the proximity or contact of an object and supplies a detection signal. Detects volume, illuminance, magnetic force, radio waves, pressure, etc., and provides information based on the detected physical quantity Specifically, the sensing element may be a capacitance element, a photoelectric conversion element, a magnetic detection element, a piezoelectric element, a resonator, or the like. It can be used for children.

[0407] The detection unit 602 detects, for example, a change in capacitance between an object in proximity or in contact with the object. do.

[0408] In addition, when an object having a higher dielectric constant than the air, such as a finger, comes close to the conductive film in the air, When the finger is touched, the capacitance between the finger and the conductive film changes. This change in capacitance is detected and the detection information is provided. can be provided.

[0409] For example, when the capacitance changes, charge is shared between the capacitance element and the The voltage across the electrodes changes, and this change in voltage can be used as a detection signal.

[0410] The detection unit 602 includes a detection circuit. The detection circuit is connected to a selection signal line G1, a control line RES, or is electrically connected to a signal line DL or the like.

[0411] The detection circuit includes a transistor and a detection element. A capacitor element electrically connected to the detection circuit can be used for the detection circuit. A transistor electrically connected to the capacitor can be used in the detection circuit.

[0412] The detection circuit includes, for example, an insulating layer 653, a first electrode 651 sandwiching the insulating layer 653, and A capacitor 650 having a second electrode 652 can be used (FIG. 26). The voltage between the electrodes of the element 650 is changed by the proximity of a conductive film electrically connected to one of the electrodes. It varies depending on.

[0413] The sensing unit 602 can be rendered conductive or non-conductive based on a control signal. For example, the transistor M12 can be used as the switch.

[0414] Additionally, a transistor may be used in the sensing unit 602 to amplify the sensing signal.

[0415] The transistors that can be manufactured in the same process are the transistors that amplify the detection signal and the This allows the input unit 600 to be manufactured in a simplified manner. We can provide it.

[0416] The detection unit also has a plurality of windows 667 arranged in a matrix. The window portion 667 transmits visible light, and a light-shielding layer BM may be disposed between the windows 667.

[0417] The touch panel 500TP has a colored layer at a position overlapping the window portion 667. The colored layer can be called a color filter. For example, blue A colored layer 367B that transmits green light, a colored layer 367G that transmits red light, A colored layer 367R that transmits yellow light or a colored layer 367R that transmits white light can be used. A colored layer that transmits light may be used.

[0418] The display unit 500 has a plurality of pixels 302 arranged in a matrix. The pixel 302 is arranged so as to overlap with the window portion 667 of the sensing unit 600. The pixels may be arranged with higher resolution than those in Example 02. Since the pixels are the same as those in Example 1, the explanation will be is omitted.

[0419] The touch panel 500TP has a window 667 that transmits visible light and is arranged in a matrix. The input section 600 has a plurality of detection units 602, and the pixels 302 overlapping the window section 667 are overlapped. A display unit 500 having a plurality of windows 667 and a colored layer between the windows 667 and the pixels 302. In addition, each detection unit can reduce interference with other detection units. A switch is provided.

[0420] This allows the detection information detected by each detection unit to be supplied together with the position information of the detection unit. In addition, the detection information is provided in association with the position information of the pixels that display the image. In addition, the detection unit that does not supply detection information and the signal line are put into a non-conductive state. This reduces interference with the detection unit that supplies the detection signal. As a result, it is possible to provide a touch panel 500TP that is highly convenient and reliable.

[0421] For example, the input unit 600 of the touch panel 500TP detects detection information and provides it together with position information. Specifically, the user of the touch panel 500TP can input the following to the input unit 600: Using a finger as a pointer, you can perform various gestures (tap, drag, swipe, or pinch) It is possible to carry out procedures such as punching in.

[0422] The input unit 600 detects a finger or the like approaching or touching the input unit 600 and records the detected position or trajectory. It is possible to provide sensing information including traces and the like.

[0423] The computing device determines whether the supplied information satisfies a predetermined condition based on a program or the like. , executes the command associated with the given gesture.

[0424] Thus, the user of the input unit 600 can provide a predetermined gesture using a finger or the like to input a predetermined The gesture can be used to cause the computing device to execute an instruction associated with the gesture.

[0425] For example, the input unit 600 of the touch panel 500TP first supplies detection information to one signal line. A detection unit X is selected from the plurality of detection units that can detect the object. The signal line of the other detection units, excluding unit X, is put into a non-conductive state. Therefore, the interference with the sensing unit X caused by other sensing units can be reduced.

[0426] Specifically, interference with the detection elements of detection unit X caused by the detection elements of other detection units can be reduced.

[0427] For example, a capacitance element and a conductive film to which one electrode of the capacitance element is electrically connected are connected to a detection element. In this case, the potential of the conductive membrane of the other detection unit causes the conduction of the detection unit X. This reduces interference with the potential of the conductive membrane.

[0428] This allows the Touch Panel 500TP to be equipped with a sensing unit regardless of its size. It can be driven to provide sensing information. For example, it can be used in a handheld device. There are various sizes of touch pads, from those that can be used for writing to those that can be used for electronic whiteboards. Chipanel 500TP can be provided.

[0429] The touch panel 500TP can also be folded or unfolded. In addition, the detection provided by the other detection units can be compared in the folded and unfolded states. Even if the interference with the sensor unit X is different, the state of the touch panel 500TP is not affected. The detection unit can be driven to supply detection information without any need for a power supply.

[0430] In addition, the display unit 500 of the touch panel 500TP can be supplied with display information. For example, the computing device may provide the display information.

[0431] In addition to the above configuration, the touch panel 500TP can also have the following configuration.

[0432] The touch panel 500TP may include a driver circuit 603g or a driver circuit 603d. It may also be electrically connected to the FPC 1.

[0433] The driving circuit 603g can supply a selection signal at a predetermined timing, for example. A selection signal is supplied to each of the selection signal lines G1 in a predetermined order. It can be used in the driver circuit 603g. For example, a shift register, a flip-flop circuit, A circuit, a combinational circuit, or the like can be used.

[0434] The driving circuit 603d supplies detection information based on the detection signal supplied by the detection unit 602. In addition, various circuits can be used for the driving circuit 603d. For example, By electrically connecting to the detection circuit arranged in the unit, a source follower circuit and a A circuit capable of forming a light-reflecting mirror circuit can be used for the driving circuit 603d. Also, the sensor may have an analog-to-digital conversion circuit for converting the detection signal into a digital signal. stomach.

[0435] The FPC 1 supplies timing signals, power supply potential, etc., and is supplied with detection signals.

[0436] The touch panel 500TP includes a driving circuit 503g, a driving circuit 503s, wiring 311, or a terminal The touch panel 500TP (or the drive circuit) may include an FPC 2 may be electrically connected to

[0437] In addition, even if a protective layer 670 is provided to protect the touch panel 500TP from scratches, For example, a ceramic coating layer or a hard coating layer can be used for the protective layer 670. Specifically, a layer containing aluminum oxide or a UV-curable resin can be used.

[0438] This embodiment mode can be combined with other embodiment modes as appropriate.

[0439] (Embodiment 4) In this embodiment, electronic devices and lighting devices according to one embodiment of the present invention will be described with reference to drawings. do.

[0440] Examples of electronic devices include television sets, computer monitors, digital Cameras, digital video cameras, digital photo frames, mobile phones (mobile phones, mobile (also called telephone equipment), portable game machines, personal digital assistants, audio playback devices, pachinko machines, etc. Examples include large game consoles.

[0441] In addition, since the electronic device or lighting device of one embodiment of the present invention is flexible, it can be used in a house or a building. It can also be installed along the inner or outer walls of a vehicle or along the curved surfaces of the interior or exterior of a vehicle. It is Noh.

[0442] Further, the electronic device of one embodiment of the present invention may include a secondary battery and may be configured to use non-contact power transmission. It is preferable to be able to charge the secondary battery.

[0443] As the secondary battery, for example, a lithium polymer battery (lithium ion battery) using a gel electrolyte is used. Lithium-ion secondary batteries such as lithium-ion polymer batteries, nickel-metal hydride batteries, nickel-cadmium batteries, organic These include nickel-zinc batteries, lead-acid batteries, air secondary batteries, nickel-zinc batteries, and silver-zinc batteries. .

[0444] The electronic device according to one embodiment of the present invention may include an antenna. By this, it is possible to display images or information on the display unit. And if a secondary battery is included, the antenna may be used for contactless power transmission.

[0445] The display system according to one embodiment of the present invention has an increased number of display panels, thereby increasing the area of ​​the display region. Therefore, the display system according to one embodiment of the present invention can be The present invention can be suitably used for digital signage, PID, etc. The display system can change the outer shape of the display area to various shapes by changing the arrangement of the display panels. In addition, by applying the image processing device of one embodiment of the present invention, Therefore, the seam between the display areas can be made less noticeable. It is possible to suppress unevenness.

[0446] In FIG. 27(A), a display system 10 according to an embodiment of the present invention is mounted on a pillar 15 and a wall 16. The display system 10 is used as a display panel having flexibility. By using a display panel that can be mounted on a curved surface, the display system 10 can be installed on the curved surface. do.

[0447] Here, in particular, when the display system according to one embodiment of the present invention is used for digital signage or PID, In this case, a touch panel is applied to the display panel, so that an image or a video can be displayed in the display area. This is preferable because it not only makes it easier for the viewer to see the route but also allows the viewer to intuitively operate it. When used to provide information such as traffic information, the user can operate the device intuitively. When installing on the wall of a building or public facility, For example, a touch panel does not need to be applied to the display panel.

[0448] 27B to 27E show an example of an electronic device having a curved display portion 7000. The display surface of the display unit 7000 is curved, and display can be performed along the curved display surface. The display unit 7000 may be flexible.

[0449] The display portion 7000 included in each of the electronic devices shown in FIGS. 27B to 27E is a display device according to one embodiment of the present invention. The system is fabricated using the method shown.

[0450] An example of a mobile phone is shown in FIG. 27B. A mobile phone 7100 includes a housing 7101, a display unit, and a 7000, operation button 7103, external connection port 7104, speaker 7105, microphone 7 It has 106 etc.

[0451] A mobile phone 7100 shown in FIG. 27B includes a touch sensor in a display portion 7000. All operations such as talking or entering text can be done with a finger or a stylus. This can be done by touching part 7000.

[0452] In addition, the operation button 7103 can be used to turn the power on and off, or to turn the display unit 7000 on and off. For example, from the email composition screen, you can change the type of image displayed on the You can then switch to the main menu screen.

[0453] FIG. 27C shows an example of a television device. The television device 7200 includes a housing 72. A display unit 7000 is built into the housing 72.01. This shows a configuration that supports 01.

[0454] The television device 7200 shown in FIG. 27C is operated by an operation switch provided in the housing 7201. This can be done by a separate remote control 7211. The display unit 7000 may be provided with a touch sensor, and the operation may be performed by touching the display unit 7000 with a finger or the like. The remote control unit 7211 displays information output from the remote control unit 7211. The remote control 7211 may have an operation key or a touch panel. The channel or volume can be controlled by the touch panel, and the display unit 7000 displays You can manipulate the video.

[0455] The television device 7200 includes a receiver or a modem. It is also possible to receive general television broadcasts by wired or wireless connection via a modem. By connecting to a communication network, one-way (sender to receiver) or two-way It is also possible to communicate information (between a sender and a receiver, or between receivers).

[0456] An example of a portable information terminal is shown in FIG. It has a display unit 7000. In addition, it has operation buttons, an external connection port, a speaker, a microphone, The display unit 7000 may include an antenna, a battery, etc. The mobile information terminal 7300 is operated by touching the display unit 7000 with a finger or a stylus. This can be done.

[0457] FIG. 27(D) is a perspective view of the portable information terminal 7300, and FIG. 27(E) is a perspective view of the portable information terminal 7300. FIG. 3 is a top view of 300.

[0458] The portable information terminal exemplified in this embodiment may be, for example, a telephone, a notebook, an information viewing device, or the like. It has one or more selected functions. Specifically, it can be used as a smartphone. The portable information terminal exemplified in this embodiment is, for example, a mobile phone, an electronic mail Various functions such as browsing and writing text, playing music, internet communication, and computer games The application can be executed.

[0459] The mobile information terminal 7300 can display text or images on multiple surfaces. For example, As shown in FIG. 27D, three operation buttons 7302 are displayed on one side and are shown as rectangles. The information 7303 can be displayed on another surface. Here is an example of a mobile device with information displayed on the top side of the screen. Also, information may be displayed on three or more surfaces of the mobile information terminal.

[0460] Examples of such information include notifications from social networking services (SNS), Display notifying the arrival of an email or telephone call, the subject of the email, or the name of the sender , date and time, battery level, antenna reception strength, etc. Instead of information, an operation button, an icon, or the like may be displayed at the position where the button is pressed.

[0461] For example, the user of the portable information terminal 7300 may carry the portable information terminal 7300 in a breast pocket of a suit. When it is stored, the display (information 7303 in this example) can be confirmed.

[0462] Specifically, the telephone number or name of the caller of the incoming call is displayed on the mobile information terminal 7300. The user takes the portable information terminal 7300 out of his / her pocket and You can check the display and decide whether or not to answer the call without having to hang up.

[0463] FIG. 27(F) shows an example of an illumination device having a curved light-emitting portion.

[0464] The light-emitting portion of the lighting device illustrated in FIG. 27F is a light-emitting device that uses the display system of one embodiment of the present invention. It is produced.

[0465] The lighting device 7400 shown in FIG. 27(F) includes a light-emitting unit 7402 having a wavy light-emitting surface. This makes it a highly designed lighting device.

[0466] Furthermore, each light-emitting unit included in the lighting device 7400 may be flexible. The light emitting surface of the light emitting part can be adjusted automatically according to the application by fixing it with a plastic member or a movable frame. The structure may be such that it is freely bendable.

[0467] The lighting device 7400 includes a base 7401 having an operation switch 7403 and a The light emitting portion is supported by the light source.

[0468] In the above, the illumination device in which the light-emitting unit is supported by the base is illustrated. The housing can be fixed to the ceiling or hung from the ceiling. The surface can be curved, so the light-emitting surface can be curved concavely to illuminate a specific area. It can also illuminate an entire room by curving the light-emitting surface convexly.

[0469] In FIG. 28(A1), (A2), (B) to (I), a flexible display unit 7001 is provided. 1 shows an example of a portable information terminal.

[0470] The display portion 7001 is manufactured using a display system according to one embodiment of the present invention. Display systems having display panels that can be bent with a diameter of 0.01 mm or more and 150 mm or less The display unit 7001 may be provided with a touch sensor, and the display may be touched by a finger or the like. By touching the portion 7001, the portable information terminal can be operated.

[0471] FIG. 28(A1) is a perspective view showing an example of a portable information terminal, and FIG. 28(A2) is a perspective view showing an example of a portable information terminal. 7 is a side view showing an example of a mobile information terminal. 01, a drawer member 7502, an operation button 7503, etc.

[0472] The portable information terminal 7500 includes a flexible display unit 7 wound in a roll shape in a housing 7501. 001.

[0473] In addition, the portable information terminal 7500 can receive video signals using a built-in control unit. The video can be displayed on the display unit 7001. The housing 7501 is also equipped with a terminal for connecting a connector, A configuration in which signals or power are directly supplied from the outside via wires may also be used.

[0474] In addition, the operation button 7503 can be used to turn the power on and off or to switch the image to be displayed. In addition, in Fig. 28 (A1), (A2), and (B), a mobile information terminal In the example shown, the operation buttons 7503 are arranged on the side of the mobile information terminal 7500. It may be arranged on the same surface (front surface) as the display surface of the terminal 7500 or on the back surface.

[0475] FIG. 28B shows a portable information terminal 7500 with the display portion 7001 pulled out. In this state, an image can be displayed on the display unit 7001. The display unit 7001 can be pulled out using a roll 7502. 28(A1) in which the display unit 7001 is pulled out, and FIG. 28(B) in which the display unit 7001 is pulled out. For example, in the case of FIG. 28(A1), In this state, the rolled-up portion of the display unit 7001 is hidden, so that the mobile information The power consumption of the terminal 7500 can be reduced.

[0476] When the display unit 7001 is pulled out, the display surface of the display unit 7001 is fixed in a flat state. In order to secure the display unit 7001 in place, a reinforcing frame may be provided on the side of the display unit 7001 .

[0477] In addition to this configuration, a speaker is provided on the housing, and the device can be operated by receiving an audio signal together with the video signal. The configuration may be such that audio is output.

[0478] 28(C) to (E) show an example of a foldable portable information terminal. In FIG. 28(D), the state is changed from the unfolded state to the folded state. In FIG. 28(E), the portable information terminal 7600 is in a folded state. The portable information terminal 7600 is highly portable when folded and can be carried around easily when unfolded. It has excellent visibility thanks to its large, seamless display area.

[0479] The display unit 7001 is supported by three housings 7601 connected by hinges 7602. The two housings 7601 are bent via the hinge 7602, so that the portable information terminal The 7600 can be reversibly transformed from an unfolded state to a folded state.

[0480] An example of a foldable mobile information terminal is shown in FIG. 28(F) and (G). 28(G) shows the display unit 7001 folded inward. The portable information terminal 7650 is folded so that the 001 is on the outside. The mobile information terminal 7650 has a display portion 7001 and a non-display portion 7651. When not in use, the display unit 7001 can be folded inward. Staining or damage can be suppressed.

[0481] FIG. 28H shows an example of a flexible portable information terminal. The portable information terminal 7700 is The device has a housing 7701 and a display portion 7001. In addition, the device has a button 7703a as an input means, 7703b, speakers 7704a and 7704b as audio output means, and an external connection port 77 05, a microphone 7706, etc. The portable information terminal 7700 may be flexible. The battery 7709 may be mounted on the display unit 70. It may be placed overlapping with 01.

[0482] The housing 7701, the display portion 7001, and the battery 7709 are flexible. The portable information terminal 7700 can be bent into a desired shape or twisted. For example, the portable information terminal 7700 has a display unit 7001 on the inside or It can be folded outward and used. In this manner, the housing 7701 and the display unit 700 can be used in a rolled-up state. Since the portable information terminal 7700 can freely deform, even if it is dropped or has the advantage that it is less likely to be damaged even if an unintended external force is applied.

[0483] In addition, since the portable information terminal 7700 is lightweight, the upper part of the housing 7701 can be held with a clip or the like. Or, the housing 7701 can be fixed to a wall with a magnet or the like. It can be conveniently used in a variety of situations.

[0484] FIG. 28I shows an example of a wristwatch-type portable information terminal. The device includes a display unit 7001, an input / output terminal 7802, and an operation button 7803. The housing 7801 functions as a housing. The battery 7805 can be mounted on the display unit 700. 1 or may be arranged overlapping with band 7801.

[0485] The band 7801, the display portion 7001, and the battery 7805 are flexible. The portable information terminal 7800 can be easily curved into a desired shape.

[0486] The operation button 7803 is used to set the time, turn the power on and off, and turn wireless communication on and off. It has various functions such as operation, silent mode activation and deactivation, power saving mode activation and deactivation, etc. For example, the operating system installed in the portable information terminal 7800 can The function of the operation button 7803 can also be freely set using the stem.

[0487] In addition, by touching an icon 7804 displayed on the display unit 7001 with a finger or the like, the application You can then launch the application.

[0488] In addition, the mobile information terminal 7800 is capable of performing short-distance wireless communication according to a communication standard. For example, by communicating with a wireless headset, a hands-free You can also make calls.

[0489] The portable information terminal 7800 may also have an input / output terminal 7802. If the device has a connector, data can be exchanged directly with other information terminals. Charging can also be performed via the input / output terminal 7802. The charging operation of the portable information terminal shown in the example is performed by non-contact power transmission without using input / output terminals. It is also possible.

[0490] This embodiment mode can be combined with other embodiment modes as appropriate. [Explanation of symbols]

[0491] 10 Display System 11 Image processing device 12 Display device 13 Display area 14 Detection device 15 Pillars 16. Wall 21 Decoder circuit 22 Signal division section 23a Controller 23b Controller 30a Display panel 30b Display panel 31a Drive circuit 31b Drive circuit 51 Arithmetic section 52 Storage section 92a area 92b area 92c area 92d area 100 Display Panel 100a Display panel 100b Display panel 100c Display Panel 100d Display Panel 101 Display area 101a Display area 101b Display area 101c display area 101d Display area 101e Display area 101f Display area 102 Fields 102a Field 102b Field 103 Translucent Layer 103a Light-transmitting layer 103b Light-transmitting layer 105a Field 105b Field 105c Field 110 Fields 110a Field 110b Field 110c Field 110d Field 112a FPC 112b FPC 120 Fields 120a Field 120b Field 120c Field 123 FPC 131 Resin layer 132 Protective substrate 133 Resin layer 134 Protective substrate 141 pixels 141a pixel 141b pixels 142a Wiring 142b Wiring 143a loop 143b Loop 145 Wiring 151 substrate 151a base plate 151b base plate 152 substrate 152a base plate 152b base plate 153a Element layer 153b Element layer 154 Adhesive layer 155a Field 155b Field 156a Field 156b Field 301 Representation Department 302 pixels 302B sub-pixel 302G sub-pixel 302R subpixel 302t Transistor 303c capacity 303g(1) Scanning line driver circuit 303g(2) Imaging pixel driving circuit 303s(1) Image signal line driver circuit 303s(2) Imaging 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 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 367B Colored layer 367BM light shielding layer 367G colored layer 367p anti-reflection layer 367R colored layer 390 Touch Panel 500 Display 500TP Touch Panel 501 Display section 503g drive circuit 503s driver circuit 505 Touch Panel 505B Touch Panel 509 FPC 590 Substrate 591 Electrode 592 Electrode 593 Insulating Layer 594 Wiring 595 Touch Sensor 597 Adhesive layer 598 Wiring 599 Connection Layer 600 Input section 602 Detection Unit 603d Drive circuit 603g Drive circuit 650 Capacitive element 651 Electrode 652 Electrode 653 Insulation Layer 667 Window 670 protective layer 701 Substrate 703 Adhesive layer 705 Insulation Layer 711 Substrate 713 Adhesive layer 715 Insulating layer 804 Light emitting part 806 Drive circuit section 808 FPC 814 Conductive layer 815 Insulating layer 817 Insulating layer 817a Insulating layer 817b Insulating layer 820 Transistor 821 Insulating layer 822 Adhesive layer 823 Spacer 824 Transistor 825 Connector 830 Light emitting element 831 Lower electrode 832 Optical adjustment layer 833 EL layer 835 Upper electrode 845 Colored layer 847 Light blocking layer 849 Overcoat 856 Conductive layer 857 Conductive Layer 857a Conductive layer 857b Conductive layer 7000 Display 7001 Display section 7100 Mobile Phone 7101 Case 7103 Operation button 7104 External connection port 7105 Speaker 7106 Microphone 7200 Television Equipment 7201 Case 7203 Stand 7211 Remote control device 7300 Mobile Information Terminal 7301 Case 7302 Operation button 7303 Information 7400 Lighting Equipment 7401 Daibu 7402 Light emitting part 7403 Operation switch 7500 Mobile Information Terminal 7501 Case 7502 Materials 7503 Operation button 7600 Mobile Information Terminal 7601 Case 7602 Hinge 7650 Mobile Information Terminal 7651 Hidden part 7700 Portable Information Terminal 7701 Case 7703a Button 7703b Button 7704a Speaker 7704b Speaker 7705 External connection port 7706 Mike 7709 Battery 7800 Mobile Information Terminal 7801 Band 7802 Input / output terminal 7803 Operation button 7804 Icons 7805 Battery

Claims

1. a first display panel having flexibility, a second display panel having flexibility, a third display panel having flexibility, and a fourth display panel having flexibility; the first display panel has a first display area; the second display panel has a second display area; the third display panel has a third display area; the fourth display panel has a fourth display area; a first side of the first display area and a first side of the second display area are arranged to overlap each other; a first side of the third display area and a first side of the fourth display area are arranged to overlap each other; a part of a second side of the first display area and a part of a second side of the third display area are arranged to overlap with each other; a part of a second side of the second display area and a part of a second side of the third display area are arranged to overlap with each other; a part of a second side of the second display area and a part of a second side of the fourth display area are arranged to overlap with each other; A display device, wherein a first side of the first display area and a first side of the third display area are arranged not to be in contact with each other.

2. In claim 1, A display device, wherein an outline of an area formed by combining the first display area, the second display area, the third display area, and the fourth display area has a shape other than a rectangular shape.

Images