Display device and electronic device

Abstract

The present disclosure relates to a display device and an electronic device. [Problem] In order to further improve the viewing angle characteristics. [Solution] A display device is provided, comprising: a plurality of light-emitting portions formed on a substrate; and a color filter arranged to correspond to each light-emitting portion, the color filter being arranged as an upper layer of the light-emitting portion. The light-emitting portion and the color filter are arranged so that, in a region at least within a display surface, a relative misalignment is generated in a plane perpendicular to a stacking direction, between the center of the light-emitting surface of the light-emitting portion and the center of the color filter corresponding to the light-emitting portion.

Description

[0001] This application is a divisional application of the Chinese national phase application of the PCT application with an application date of March 7, 2017, an international application number of PCT / JP2017 / 008961, and an invention name of “Display device and electronic device”. The entry date of the Chinese national phase application into the Chinese national phase is September 21, 2018, and the application number is 201780019568.X. All the contents are incorporated herein by reference. Technical Field

[0002] The present disclosure relates to a display device and an electronic device. Background Art

[0003] Various technologies for improving viewing angle characteristics in display devices have been developed. For example, Patent Document 1 discloses a display device that represents white or neutral color by color mixing a self-luminous element of a plurality of simple colors (red, green, and blue), and wherein the distance from the end of the light-emitting area to the end of the opening of the light-blocking layer provided on the light-emitting area is different between the red light-emitting area, the green light-emitting area, and the blue light-emitting area. In the display device described in Patent Document 1, by appropriately setting the area of ​​the opening of the light-blocking layer, the rate of brightness reduction caused by light blocking by the light-blocking layer can be varied between colors, thereby reducing the difference in viewing angle characteristics between colors. Therefore, the chromaticity change of white or neutral color due to viewing angle can be suppressed.

[0004] Citation List

[0005] Patent Literature

[0006] Patent document 1: JP 2011-40352A. Summary of the invention

[0007] Technical issues

[0008] Here, recently, a display device having a display surface of a smaller area (hereinafter, sometimes referred to as a small display device for simplicity), for example, a head-mounted display (HMD) or an electronic viewfinder (EVF) of a digital camera, is increasingly often mounted on an electronic device. In such an electronic device, a light beam from the display surface of the display device is caused to form an image on the user's eyeball via an optical system of lenses, mirrors, diffraction gratings, etc.; since the weight and size of the electronic device need to be further reduced, the optical system tends to be miniaturized. If the optical system is miniaturized, it is necessary to cause the light beam to properly form an image on the user's eyeball through an optical system with a simpler configuration, and therefore, it is difficult to supplement the viewing angle characteristics of the display device by modifying the configuration of the optical system; the viewing angle characteristics of the display device directly lead to the display quality visually recognized by the user. Therefore, depending on the use, the display device is required to achieve more improved viewing angle characteristics.

[0009] Therefore, the present disclosure proposes a novel and improved display device that can more improve viewing angle characteristics and an electronic device equipped with the display device.

[0010] Solution to the problem

[0011] According to the present disclosure, a display device is provided, comprising: a plurality of light-emitting portions formed on a substrate; and a color filter disposed on the light-emitting portion to correspond to each of the plurality of light-emitting portions. The light-emitting portion and the color filter are disposed so that in at least a partial area of ​​a display surface, a relative misalignment is generated between the center of a light-emitting surface of the light-emitting portion and the center of the color filter corresponding to the light-emitting portion in a plane perpendicular to a stacking direction.

[0012] In addition, according to the present disclosure, there is provided an electronic device, comprising: a display device configured to perform display based on an image signal. The display device comprises: a plurality of light-emitting portions formed on a substrate; and a color filter disposed on the light-emitting portion to correspond to each of the plurality of light-emitting portions, and the light-emitting portion and the color filter are disposed so that in at least a partial area of ​​the display surface, a relative misalignment is generated between the center of the light-emitting surface of the light-emitting portion and the center of the color filter corresponding to the light-emitting portion in a plane perpendicular to the stacking direction.

[0013] According to the present disclosure, the light-emitting portion and the color filter are arranged so that in at least a partial area of ​​the display surface of the display device, a relative misalignment is generated between the center of the light-emitting surface of the light-emitting portion (for example, in an organic EL display, a light-emitting element) and the center of the color filter corresponding to the light-emitting portion in a plane perpendicular to the stacking direction. Therefore, for a pixel including the light-emitting portion and the color filter, a wider viewing angle characteristic can be obtained in the direction in which the color filter is misaligned with the light-emitting surface of the light-emitting portion.

[0014] Advantageous Effects of the Invention

[0015] As described above, according to the present disclosure, the viewing angle characteristics can be further improved. Note that the effects described above are not necessarily restrictive. Any of the effects described in this specification or other effects that can be understood from this specification can be achieved by using or replacing the above effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] [ Figure 1 ] is a diagram that simulates the trajectory of a light beam from a small display device in an electronic device to the user's eyeball when the optical system is miniaturized.

[0017] [ Figure 2 ] is a cross-sectional view showing a configuration example of a display device according to the present embodiment.

[0018] [ Figure 3 ] is a diagram for describing an effect displayed by generating relative misalignment between a light emitting element and a CF (color filter) in a display device according to this embodiment.

[0019] [ Figure 4 ] is a diagram that simply and schematically shows the configuration of a public display device.

[0020] [ Figure 5 ] is a diagram for describing the distribution of the misalignment amount L and the misalignment direction of CF in the display surface of the display device.

[0021] [ Figure 6 ] is a diagram for describing a transition region where the misalignment amount L and / or misalignment direction of CF changes.

[0022] [ Figure 7 ] is a diagram for describing a transition region where the misalignment amount L and / or misalignment direction of CF changes.

[0023] [ Figure 8 ] is a diagram for describing a method for setting a misalignment amount L of a CF.

[0024] [ Fig. 9 ] is a diagram for describing a method for setting a misalignment amount L of a CF.

[0025] [ Fig.10 ] is a diagram for describing a method for setting a misalignment amount L of a CF.

[0026] [ Fig.11 ] is a diagram for describing a method for setting a misalignment amount L of a CF.

[0027] [ Fig.12 ] is a diagram for describing another method for creating relative misalignment between a light emitting element and a CF.

[0028] [ Fig.13 ] is a diagram showing a configuration example of a display device according to a modified example in which a reflector is not provided.

[0029] [ Fig.14 ] is a diagram for describing a method for setting the misalignment amount L of a CF, and also considers the case where the emitted light from the light emitting portion is incident on the side of the CF.

[0030] [ Fig.15 ] is a diagram showing the appearance of a smart phone as an example of an electronic device that can use the display device according to the present embodiment and the modified example.

[0031] [ Fig.16 ] is a diagram showing the appearance of a digital camera as another example of an electronic device that can use the display device according to the present embodiment and the modified example.

[0032] [ Fig.17 ] is a diagram showing the appearance of a digital camera as another example of an electronic device that can use the display device according to the present embodiment and the modified example.

[0033] [ Fig.18 ] is a diagram showing the appearance of an HMD as another example of an electronic device that can use the display device according to the present embodiment and the modified example. DETAILED DESCRIPTION

[0034] Hereinafter, preferred embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Note that, in this specification and the drawings, structural elements that have substantially the same function and structure are denoted with the same reference symbols, and repeated explanation of these structural elements is omitted.

[0035] Note that the description will be given in the following order.

[0036] 1. Background of the present disclosure

[0037] 2. Display device configuration

[0038] 3. About the misalignment of CF

[0039] 4. Modify the example

[0040] 4-1. Method for generating relative misalignment between light emitting element and CF

[0041] 4-2. No reflector configuration is provided

[0042] 4-3. Other methods for setting the misalignment amount L

[0043] 5. Application Examples

[0044] 6. Supplement

[0045] (1. Background of the present disclosure)

[0046] Before describing preferred embodiments of the present disclosure, the background in which the inventor conceived the present disclosure is described in order to make the present disclosure more clear.

[0047] As described above, when using HMD, EVF of digital camera, etc., a small display device can be installed on the electronic device. In such electronic device, a light beam from the display surface of the display device is caused to form an image on the user's eyeball via an optical system such as a lens, a reflector, a diffraction grating, etc. On the other hand, recently, it is very necessary to further reduce the weight and size of the electronic device to reduce the burden on the user. In order to achieve the reduction in weight and size of the electronic device, it is also necessary to install an optical system to achieve a smaller size.

[0048] Figure 1 1 is a diagram showing, in a simulated manner, the trajectory of a light beam from a small display device in an electronic device to a user's eyeball in the case of miniaturization of an optical system. Figure 1 As shown, in order to achieve the reduction in weight and size of the electronic device, it is necessary to reduce the size of the optical system 105 and narrow the distance between the optical system 105 and the display device 1. In addition, since the optical system 105 cannot be made to have a complicated configuration, it is difficult to supplement the viewing angle characteristics of the display device 1 by modifying the configuration of the optical system 105. Therefore, a light beam having a wider angle (i.e., a light beam having a wider viewing angle) among the light beams emitted from the display surface 101 of the display device 1 is guided to the user's eyeball 103 while maintaining almost the same characteristics as when the light beam is emitted from the display surface 101 of the display device 1. For the above reasons, in the case of trying to reduce the size of the optical system 105 in an electronic device using a small display device 1, in order to provide a high-quality display to the user, the display device 1 needs to be able to emit a light beam having desired characteristics even at a wider viewing angle, i.e., have a more excellent wide viewing angle characteristic.

[0049] Here, a display device of a system is generally known in which pixels are formed by providing a color filter (CF) on a white light emitting element, and color display is performed by performing color conversion based on the CF on a pixel basis. If an attempt is made to achieve a wide viewing angle in a display device of such a system, a problem is that so-called color mixing occurs, in which light from one light emitting element is incident on the CF of an adjacent pixel, and light emission of a desired color is not obtained.

[0050] In this regard, various methods of suppressing color mixing have been proposed so far. For example, a method is known in which the distance between the light emitting element and the CF (the facing gap) is set smaller than the pixel size. Alternatively, a method is known in which the area of ​​the light emitting surface of the light emitting element is set much smaller than the area of ​​the CF (the area in the plane perpendicular to the stacking direction).

[0051] However, these methods have the following disadvantages. For example, if the display device is a display device using an organic light emitting diode (OLED) (i.e., an organic electroluminescent (EL) display (OELD display)), and an attempt is made to obtain a narrow facing gap structure, the electrode layer, the protective layer, and the CF adhesive layer need to be made into a thin film. Therefore, there is a concern that the luminous characteristics and protectiveness of the OLED will be greatly reduced. In addition, reducing the area of ​​the light emitting surface of the light emitting element will lead to a decrease in the aperture ratio. Therefore, there is a concern that the brightness will be greatly reduced.

[0052] As described above, it is expected that a small display device (e.g., a display device mounted on an electronic device) will achieve further improvement in wide viewing angle characteristics. However, in the methods generally proposed so far for achieving a wide viewing angle while suppressing color mixing, there is a concern that other characteristics will be reduced. In view of the above-mentioned situation, the inventors have conducted extensive research on the technology of display devices, which can suppress the occurrence of color mixing and can further improve the wide viewing angle characteristics without causing a reduction in other characteristics (e.g., those characteristics as described above), such as a reduction in brightness. Therefore, the present disclosure is conceived.

[0053] Hereinafter, a preferred embodiment of the present disclosure conceived by the present inventors is described in detail. Note that, hereinafter, an embodiment in which the display device is an organic EL display is described as an example of the present disclosure. However, the present disclosure is not limited to this example, and the display device as the target of the present disclosure may be various display devices as long as it is a display device that can realize color display using CF, for example, a liquid crystal display, a plasma display, and an electronic paper device.

[0054] (2. Configuration of display device)

[0055] Now refer to Figure 2 A configuration of a display device according to a preferred embodiment of the present disclosure is described. Figure 2 is a cross-sectional view showing a configuration example of a display device according to the present embodiment. Figure 2 A schematic partial cross-sectional view of a display device according to the present embodiment is shown.

[0056] refer to Figure 2, the display device 1 according to the present embodiment includes, on a first substrate 11: a plurality of light emitting elements 10, each of which includes an OLED and emits white light; and a CF layer 33, which is provided on the light emitting element 10 and in which CFs of some colors are formed to correspond to the light emitting element 10. In addition, a second substrate 34 containing a material that transmits light from the light emitting element 10 is placed on the CF layer 33. In addition, on the first substrate 11, a thin film transistor (TFT) 15 for driving the light emitting element 10 is provided to correspond to the light emitting element 10. Any light emitting element 10 is selectively driven by the TFT 15, and then, the light from the driven light emitting element 10 passes through the corresponding CF and the color of the light is appropriately converted, and then the converted light is emitted from the upper side via the second substrate 34. Thereby, a desired image, character, etc. are displayed.

[0057] Note that in the following description, the stacking direction of the layers in the display device 1 is also referred to as the up-down direction. In this case, the side where the first substrate 11 is placed is defined as the lower side, and the side where the second substrate 34 is placed is defined as the upper side. In addition, a plane perpendicular to the up-down direction is also referred to as a horizontal plane.

[0058] therefore, Figure 2 The display device 1 shown in FIG. 1 is a top-emitting display device capable of color display that can be driven by an active matrix system. However, the present embodiment is not limited to this example, and the display device according to the present embodiment may be a display device driven by another system such as a passive matrix system, or may be a bottom-emitting display device that emits light via the first substrate 11.

[0059] Note that the display device 1 can be mounted on various electronic devices having a display function. Specifically, the display device 1 can be used as a monitoring device, for example, included in a television device, an electronic book, a smart phone, a personal digital assistant (PDA), a notebook personal computer (PC), a camera, a game device, etc. Alternatively, the display device 1 can be used for an EVF of a digital camera, an HMD, etc. As described later, the display device 1 has excellent wide viewing angle characteristics even if a complex optical system is not provided. Therefore, the display device 1 can be appropriately used in the above-mentioned electronic devices, electronic devices carried and used by users, and the electronic devices are required to achieve more reduction in weight and size (in the above-mentioned examples, smart phones, PDAs, digital cameras, HMDs, etc.).

[0060] (First Substrate and Second Substrate)

[0061] In the configuration example shown, the first substrate 11 includes a silicon substrate. In addition, the second substrate 34 includes quartz glass. However, the present embodiment is not limited to this example, and various known materials can be used as the first substrate 11 and the second substrate 34. For example, each of the first substrate 11 and the second substrate 34 may include a high strain point glass substrate, a soda lime glass (a mixture of Na2O, CaO and SiO2) substrate, a borosilicate glass (a mixture of Na2O, B2O3 and SiO2) substrate, a forsterite (Mg2SiO4) substrate, a lead glass (a mixture of Na2O, PbO and SiO2) substrate, various glass substrates with an insulating film formed on the surface, a quartz substrate, a quartz substrate with an insulating film formed on the surface, a silicon substrate with an insulating film formed on the surface, or an organic polymer substrate (e.g., polymethyl methacrylate (PMMA), polyvinyl alcohol (PVA), polyvinyl phenol (PVP), polyether sulfone (PES), polyimide, polycarbonate, polyethylene terephthalate (PET), etc.). The materials included in the first substrate 11 and the second substrate 34 may be the same or different. However, since the display device 1 is a top emission type as described above, the second substrate 34 preferably includes a material having high transmittance, which can advantageously transmit light from the light emitting element 10 .

[0062] (Light emitting element and second component)

[0063] The light emitting element 10 includes a first electrode 21, an organic layer 23 disposed on the first electrode 21, and a second electrode 22 formed on the organic layer 23. More specifically, a second component 52 is stacked on the first electrode 21, wherein an opening 25 is provided so as to expose at least a portion of the first electrode 21, and the organic layer 23 is provided on a portion of the first electrode 21 exposed at the bottom of the opening 25. That is, the light emitting element 10 has a configuration in which the first electrode 21, the organic layer 23, and the second electrode 22 are sequentially stacked in the opening 25 of the second component 52. This stacked structure serves as a light emitting portion 24 of each pixel. That is, a portion of the light emitting element 10 falling under the opening 25 of the second component 52 serves as a light emitting surface. In addition, the second component 52 serves as a pixel defining film, which is provided between pixels and divides the area of ​​the pixel.

[0064] The organic layer 23 includes a light-emitting layer containing an organic light-emitting material, and can emit white light. The specific configuration of the organic layer 23 is not limited, and can be various well-known configurations. For example, the organic layer 23 may have a stacked structure of a hole transport layer, a light-emitting layer, and an electron transport layer, a stacked structure of a hole transport layer and a light-emitting layer also used as an electron transport layer, a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, and an electron injection layer. Stacked structure, etc. In addition, in the case where each of these stacked structures, etc. is used as a "series unit", the organic layer 23 may have a two-stage series structure in which a first series unit, a connecting layer, and a second series unit are stacked. Alternatively, the organic layer 23 may have a three-stage or more-stage series structure in which three or more series units are stacked. In the case where the organic layer 23 includes a plurality of series units, by assigning red, green, and blue to the luminescent colors of the light-emitting layer of the series unit, an organic layer 23 that emits white light as a whole can be obtained.

[0065] In the illustrated configuration example, the organic material is deposited by vacuum vapor deposition to form the organic layer 23. However, the present embodiment is not limited to this example, and the organic layer 23 may be formed by various well-known methods. For example, as a method of forming the organic layer 23, a physical vapor deposition method (PVD method) (e.g., a vacuum vapor deposition method), a printing method (e.g., a screen printing method and an inkjet printing method), a laser transfer method, various coating methods, and the like may be used. In the laser transfer method, a stacked structure of a laser absorption layer for transfer and an organic layer formed on a substrate is irradiated with laser to separate the organic layer on the laser absorption layer and transfer the organic layer.

[0066] The first electrode 21 serves as an anode. Since the display device 1 is a top emission type as described above, the first electrode 21 includes a material capable of reflecting light from the organic layer 23. In the configuration example shown, the first electrode 21 includes an alloy of aluminum and neodymium (Al-Nd alloy). In addition, for example, the film thickness of the first electrode 21 is about 0.1 μm to 1 μm. However, the present embodiment is not limited to this example, and the first electrode 21 may include various known materials used as materials for an electrode on the light reflection side, which is used as an anode in a common organic EL display. In addition, the film thickness of the first electrode 21 is also not limited to the above example, and the first electrode 21 can be appropriately formed within the film thickness range commonly used in organic EL displays.

[0067] For example, the first electrode 21 may include: a metal with a high work function, such as platinum (Pt), gold (Au), silver (Ag), chromium (Cr), tungsten (W), nickel (Ni), copper (Cu), iron (Fe), cobalt (Co) or tantalum (Ta). Or an alloy with a high work function, for example, an Ag-Pd-Cu alloy containing silver as a main component and containing 0.3 mass % to 1 mass % of palladium (Pd) and 0.3 mass % to 1 mass % of copper, an Al-Nd alloy, etc. Alternatively, the first electrode 21 may include a conductive material having a small work function value and a high light reflectivity, such as aluminum or an aluminum-containing alloy. In this case, preferably, the hole injection performance is improved by providing an appropriate hole injection layer, etc. on the first electrode 21. Alternatively, the first electrode 21 may have a structure in which a transparent conductive material having excellent hole injection characteristics (eg, indium and tin oxide (ITO) or indium and zinc oxide (IZO)) is stacked on a reflective film having high light reflectivity (eg, a dielectric multilayer film or aluminum).

[0068] The second electrode 22 is used as a cathode. Since the display device 1 is a top emission type as described above, the second electrode 22 contains a material capable of transmitting light from the organic layer 23. In the configuration example shown, the second electrode 22 contains an alloy of magnesium and silver (Mg-Ag alloy). In addition, for example, the film thickness of the second electrode 22 is about 10nm. However, the present embodiment is not limited to this example, and the second electrode 22 may contain various known materials used as materials for the electrode on the light transmission side, which is used as a cathode in a common organic EL display. In addition, the film thickness of the second electrode 22 is also not limited to the above example, and the second electrode 22 can be appropriately formed within the film thickness range generally used in organic EL displays.

[0069] For example, the second electrode 22 may include aluminum, silver, magnesium, calcium (Ca), sodium (Na), strontium (Sr), an alloy of an alkali metal and silver, an alloy of an alkaline earth metal and silver (e.g., an alloy of magnesium and silver (Mg-Ag alloy)), an alloy of magnesium and calcium (Mg-Ca alloy), an alloy of aluminum and lithium (Al-Li alloy), etc. In the case of using each of these materials in a single layer, for example, the film thickness of the second electrode 22 is about 4nm to 50nm. Alternatively, the second electrode 22 may have a structure in which a layer of any of the above materials and a transparent electrode (having a thickness of, for example, about 30nm to 1μm) including ITO or IZO are stacked from the organic layer 23 side. In the case of using such a stacked structure, for example, the thickness of the layer of any of the above materials can be as thin as about 1nm to 4nm. Alternatively, the second electrode 22 may include only a transparent electrode. Alternatively, the second electrode 22 may be provided with a bus electrode (auxiliary electrode) containing a low resistance material, such as aluminum, aluminum alloy, silver, silver alloy, copper, copper alloy, gold or gold alloy, to reduce the resistance of the second electrode 22 as a whole.

[0070] In the configuration example shown, a material having a predetermined thickness is formed as a thin film by a vacuum vapor deposition method, and then the thin film is patterned by an etching method to form the first electrode 21 and the second electrode 22, respectively. However, the present embodiment is not limited to this example, and the first electrode 21 and the second electrode 22 may be formed by various well-known methods. Examples of methods for forming the first electrode 21 and the second electrode 22 include a vapor deposition method (including an electron beam vapor deposition method, a hot wire vapor deposition method, and a vacuum vapor deposition method), a sputtering method, a chemical vapor deposition method (CVD method), a metal organic chemical vapor deposition method (MOCVD method), a combination of an ion plating method and an etching method, various printing methods (for example, a screen printing method, an inkjet printing method, a metal mask printing method, etc.), an electroplating method (electroplating method, chemical plating method, etc.), a lift-off method, a laser ablation method, a sol-gel method, and the like.

[0071] The second component 52 is formed by forming SiO2 as a thin film with a prescribed film thickness by a CVD method, and then patterning the SiO2 film using a photolithography technique and an etching technique. However, the material of the second component 52 is not limited to this example, and various materials having insulating properties can be used as the material of the second component 52. Examples of the material contained in the second component 52 include SiO2, MgF, LiF, polyimide resin, acrylic resin, fluorine resin, silicone resin, fluorine-based polymer, siloxane-based polymer, etc. However, as described later, the second component 52 contains a material with a lower refractive index than the material of the first component 51. (Configuration of components below the light emitting element)

[0072] On the first substrate 11, the first electrode 21 included in the light emitting element 10 is provided on the interlayer insulating layer 16 including SiON. Then, the interlayer insulating layer 16 covers the light emitting element driving portion formed on the first substrate 11.

[0073] The light emitting element driving portion includes a plurality of TFTs 15. In the example shown, one TFT 15 is provided for one light emitting element 10. The TFT 15 includes a gate electrode 12 formed on a first substrate 11, a gate insulating film 13 formed on the first substrate 11 and the gate electrode 12, and a semiconductor layer 14 formed on the gate insulating film 13. A region of the semiconductor layer 14 located just above the gate electrode 12 serves as a channel region 14A, and a region located so as to sandwich the channel region 14A serves as a source / drain region 14B. Note that, although in the example shown, the TFT 15 is a back gate type, the present embodiment is not limited to this example, and the TFT 15 may be a bottom gate type.

[0074] By the CVD method, an interlayer insulating layer 16 including two layers (a lower interlayer insulating layer 16A and an upper interlayer insulating layer 16B) is stacked on the semiconductor layer 14. In this case, after the lower interlayer insulating layer 16A is stacked, for example, by using a photolithography technique and an etching technique, a contact hole 17 is provided in a portion of the lower interlayer insulating layer 16A corresponding to the source / drain region 14B so as to expose the source / drain region 14B, and an interconnection 18 containing aluminum is formed so as to fill the contact hole 17. For example, the interconnection 18 is formed by combining a vacuum vapor deposition method and an etching method. Thereafter, the upper interlayer insulating layer 16B is stacked.

[0075] In a portion of the upper interlayer insulating layer 16B provided with the interconnection 18, for example, a contact hole 19 is provided by using a photolithography technique and an etching technique so as to expose the interconnection 18. Then, when the first electrode 21 of the light emitting element 10 is formed, the first electrode 21 is formed so as to contact the interconnection 18 via the contact hole 19. Therefore, the first electrode 21 of the light emitting element 10 is electrically connected to the source / drain region 14B of the TFT 15 via the interconnection 18. The gate electrode 12 of the TFT 15 is connected to a scanning circuit (not shown). Each TFT 15 is driven by a current applied to the TFT 15 from the scanning circuit at an appropriate time, and each light emitting element 10 emits light so that a desired image, character, etc. are displayed as a whole. Various well-known methods can be used as a method for driving the TFT 15 to obtain an appropriate display (i.e., a method for driving the display device 1), and therefore, a detailed description is omitted herein.

[0076] Note that although in the above example, the interlayer insulating layer 16 includes SiON, the present embodiment is not limited to this example. The interlayer insulating layer 16 may include various well-known materials that can be used as an interlayer insulating layer in a common organic EL display. For example, as the material included in the interlayer insulating layer 16, a SiO2-based material (e.g., SiO2, BPSG, PSG, BSG, AsSG, PbSG, SiON, spin-on glass (SOG), low-melting glass, glass paste, etc.), a SiN-based material, and an insulating resin (e.g., a polyimide resin, a novolac resin, an acrylic resin, polybenzoxazole, etc.) may be appropriately used alone or in combination. In addition, the method for forming the interlayer insulating layer 16 is also not limited to the above example, and well-known methods such as a CVD method, a coating method, a sputtering method, and various printing methods may be used to form the interlayer insulating layer 16. In addition, although in the above example, the interconnect 18 is formed by forming aluminum as a thin film and patterning the thin film by a vacuum vapor deposition method and an etching method, the present embodiment is not limited to this example. The interconnection 18 can be formed by forming any of various materials used as interconnections in common organic EL displays as a thin film and patterning the thin film by various methods.

[0077] (Configuration of components above the light emitting element)

[0078] The opening 25 provided in the second component 52 of the light emitting element 10 is formed to have a tapered shape, wherein the side wall of the opening 25 is inclined so that the opening area increases as it approaches the bottom. Then, the first component 51 is placed in the opening 25. That is, the first component 51 is a layer provided just above the light emitting surface of the light emitting element 10 and is a layer that propagates the emitted light from the light emitting element upward. In addition, by forming the opening 25 of the second component 52 in the above-described manner, the cross-sectional shape in the stacking direction of the first component 51 (i.e., the cross-sectional shape shown) has a substantially trapezoidal shape, and therefore, the first component 51 has a truncated cone shape or a cone shape with the bottom surface facing upward.

[0079] Si is formed by vacuum vapor deposition method 1-x N x , as a thin film to fill the opening 25, and then, the Si 1-x N x The surface of the film is formed to form the first member 51. However, the material of the first member 51 is not limited to this example, and various materials having insulating properties can be used as the material of the first member 51. Examples of the material included in the first member 51 include Si 1-x N x, ITO, IZO, TiO 2 , Nb 2 O 5 , bromine-containing polymers, sulfur-containing polymers, titanium-containing polymers, zirconium-containing polymers, etc. The method for forming the first member 51 is also not limited to this example, and various well-known methods can be used as the method for forming the first member 51 .

[0080] However, in the present embodiment, the materials of the first component 51 and the second component 52 are selected so that the refractive index n1 of the first component 51 and the refractive index n2 of the second component 52 satisfy the relationship n1>n2. By selecting the materials of the first component 51 and the second component 52 so that the refractive index satisfies the above relationship, at least a portion of the light that has propagated through the first component 51 is reflected at the surface of the second component 52 facing the first component 51. More specifically, the organic layer 23 and the second electrode 22 of the light emitting element 10 are formed between the first component 51 and the second component 52, and therefore, at least a portion of the light that has propagated through the first component 51 is reflected at the interface between the second component 52 and the organic layer 23. That is, the surface of the second component 52 facing the first component 51 serves as the light reflecting portion (reflector) 53.

[0081] In the present embodiment, as described above, the first component 51 is disposed just above the light emitting surface of the light emitting element 10. Then, the first component 51 has a truncated cone shape or a cone shape with the bottom surface facing upward, and therefore, the light emitted from the light emitting surface of the light emitting element 10 is reflected upward by the interface (i.e., the reflector 53) between the first component 51 and the second component 52, which is the light emitting direction. Therefore, according to the present embodiment, by providing the reflector 53, the efficiency of extracting the emitted light from the light emitting element 10 can be improved, and the brightness of the display device 1 as a whole can be improved.

[0082] Note that the inventors' research has shown that in order to more advantageously improve the efficiency of extracting emitted light from the light emitting element 10, it is preferred that the refractive indexes of the first component 51 and the second component 52 satisfy the relationship n1-n2≥0.20. More preferably, the refractive indexes of the first component 51 and the second component 52 satisfy the relationship n1-n2≥0.30. In addition, in order to further improve the efficiency of extracting emitted light from the light emitting element 10, it is preferred that the shape of the first component 51 satisfies the relationships 0.5≤R1 / R2≤0.8 and 0.5≤H / R1≤0.8. Here, R1 represents the diameter of the light incident surface of the first component 51 (i.e., the surface facing downward in the stacking direction and facing the light emitting surface of the light emitting element 10), R2 represents the diameter of the light emitting surface of the first component 51 (i.e., the surface facing upward in the stacking direction), and H represents the distance between the bottom surface and the upper surface (the height in the stacking direction) when the first component 51 is regarded as a truncated cone or a cone.

[0083] The protective film 31 and the planarizing film 32 are sequentially stacked on the planarized first member 51. For example, Si having a prescribed film thickness (about 3.0 μm) is stacked by a vacuum vapor deposition method. 1-y N y The protective film 31 is formed. In addition, for example, SiO 2 having a predetermined film thickness (about 2.0 μm) is stacked by a CVD method and the surface is flattened by a CMP method or the like to form a flattening film 32 .

[0084] However, the materials and film thicknesses of the protective film 31 and the planarizing film 32 are not limited to these examples, and the protective film 31 and the planarizing film 32 may appropriately include various known materials used as protective films and planarizing films of common organic EL displays so as to have a film thickness generally used in organic EL displays.

[0085] However, in the present embodiment, it is preferred to select the material of the protective film 31 so that the refractive index n3 of the protective film 31 is equal to the refractive index n1 of the first component 51 or is less than the refractive index n1 of the first component 51. In addition, the materials of the protective film 31 and the planarizing film 32 are selected so that the absolute value of the difference between the refractive index n3 of the protective film 31 and the refractive index n4 of the planarizing film 32 is preferably less than or equal to 0.30, more preferably, less than or equal to 0.20. By selecting the materials of the protective film 31 and the planarizing film 32 in this way, the reflection or scattering of the emission light from the light emitting element 10 at the interface between the first component 51 and the protective film 31 and at the interface between the protective film 31 and the planarizing film 32 can be suppressed, and the light extraction efficiency can be further improved.

[0086] Note that as the configuration from the first substrate 11 to the protective film 31 of the display device 1 , particularly as the configuration of the reflector 53 , for example, the configuration of the display device disclosed in JP 2013-191533A previously applied by the present applicant may be used.

[0087] The CF layer 33 is formed on the planarization film 32. Therefore, the display device 1 is a display device of a so-called on-chip color filter (OCCF) system, in which the CF layer 33 is formed on the first substrate 11 on which the light emitting element 10 is formed. The second substrate 34 is adhered to the upper side of the CF layer 33 via a sealing resin film 35 such as epoxy resin, thereby manufacturing the display device 1. Note that the material of the sealing resin film 35 is not limited to this example, and the material of the sealing resin film 35 can be appropriately selected in consideration of high transmittance to the emission light from the light emitting element 10, excellent adhesion to the CF layer 33 located on the lower side and the second substrate 34 located on the upper side, low reflectance of light at the interface with the CF layer 33 located on the lower side and the interface with the second substrate 34 located on the upper side, and the like.

[0088] The CF layer 33 is formed so that a CF of each color having a prescribed area is provided for each light emitting element 10. For example, the CF layer 33 can be formed by exposing to a prescribed configuration on a resist material and developing by a photolithography technique. In addition, the film thickness of the CF layer 33 is, for example, about 2 μm. However, the material, formation method, and film thickness of the CF layer 33 are not limited to these examples, and by using various known materials used as a CF layer of a common organic EL display and by various known methods, the CF layer 33 can be appropriately formed so as to have a film thickness generally used in an organic EL display.

[0089] In the example shown, the CF layer 33 is arranged so that red CF 33R, green CF 33G and blue CF 33B each having a specified area are continuously distributed on a horizontal plane. Note that in the following description, in the case where there is no need to particularly distinguish CF 33R, CF 33G and CF 33B, one or more of these may be simply written as CF 33a.

[0090] One pixel is formed by a combination of one light emitting element 110 and one CF 33a. Note that, in reality, in the display device 1, one pixel may include sub-pixels of four colors, i.e., a pixel provided with CF 33R (i.e., a red pixel), a pixel provided with CF 33G (i.e., a green pixel), a pixel provided with CF 33B (i.e., a blue pixel), and a pixel not provided with CF 33a (i.e., a white pixel). However, in this specification, for the sake of convenience of description, a combination of one light emitting element 110 and one CF 33a is also simply referred to as a pixel. Furthermore, in the display device 1, the sub-pixels of four colors may be arranged in a so-called triangle arrangement (see also the later-described arrangement). Figure 6 ).

[0091] Here, in the common display device, the light emitting element and the CF corresponding to the light emitting element are arranged so that the center of the light emitting surface of the light emitting element and the center of the CF roughly coincide in the horizontal plane. On the other hand, in the display device 1 according to the present embodiment, the light emitting element 10 and the CF 33a corresponding to the light emitting element 10 are arranged so that in at least a partial area within the display surface, the position of the center of the light emitting surface of the light emitting element 10 and the position of the center of the CF 33a in the horizontal plane are relatively offset by a prescribed distance L. In the example shown, the center of the CF 33a corresponding to the light emitting element 10 is placed offset in the right direction of the drawing relative to the center of the light emitting surface of the light emitting element 10.

[0092] Note that in the following description, the relative misalignment between the center of the light emitting surface of the light emitting element 10 and the center of the CF 33a corresponding to the light emitting element 10 in the horizontal plane is also referred to simply as the relative misalignment between the light emitting element 10 and the CF 33a. Furthermore, in the relative misalignment between the light emitting element 10 and the CF 33a, the relative misalignment amount L and the misalignment direction of the CF 33a and the center of the light emitting surface of the light emitting element 10 in the horizontal plane are also referred to simply as the misalignment amount L of the CF 33a and the misalignment direction of the CF 33a, respectively.

[0093] Figure 3 3 is a diagram for describing an effect displayed by causing relative misalignment between the light emitting element 10 and the CF 33a in the display device 1 according to the present embodiment. Figure 3 In, simplified Figure 2 , and only the first substrate 11, the light emitting element 10, the second component 52, and the CF layer 33 are shown. Figure 4 2 is a diagram for comparison, and is a diagram simply and schematically showing the configuration of the common display device 6 . Figure 4 The common display device 6 shown in has a configuration similar to that of the display device 1 according to the present embodiment, except that relative misalignment between the light-emitting element 10 and the CF 33a is not produced (i.e., the center of the light-emitting surface of the light-emitting element and the center of the CF corresponding to the light-emitting element roughly coincide in the horizontal plane).

[0094] exist Figure 3 and Figure 4 , the traveling direction of light emitted from a certain light emitting element 10 at a certain angle is shown by an arrow in a simulated manner. Here, it is assumed that the blue light is intended to be obtained as the light from the pixel into which the light emitting element 10 of interest falls. In this case, as Figure 3 As shown, in the configuration according to the present embodiment, due to the fact that the relative positions of CF 33a and the light emitting element 10 are offset by the misalignment amount L on the horizontal plane, light emitted from a certain light emitting element 10 at a certain angle passes through CF 33B and is emitted from the display device 1. Therefore, desired blue light can be obtained. On the other hand, as Figure 4 As shown, in a typical configuration, light emitted from a certain light emitting element 10 at a certain angle does not pass through the blue CF 33B, which is the CF through which the light is originally intended to pass, but passes through the green CF 33G of the adjacent pixel. Therefore, color mixing occurs, and the desired blue light cannot be obtained. Therefore, it can be said that, by the configuration according to the present embodiment, the blue pixel including the certain light emitting element 10 has a wider viewing angle in the right direction of the drawing, which is the misalignment direction of the CF 33B.

[0095] Therefore, in the present embodiment, relative misalignment between the light emitting element 10 and the CF 33 a is generated for the pixel, so that the viewing angle characteristics of the pixel in the misalignment direction of the CF 33 a can be improved.

[0096] Here, the viewing angle characteristics required for a pixel vary depending on the position in the display surface of the display device 1. Therefore, in the present embodiment, the misalignment amount L and misalignment direction of the CF 33a in each pixel are set so that a desired viewing angle is obtained in the pixel according to the position of the light emitting element 10 in the display surface (i.e., the position of the pixel). That is, in the present embodiment, both the misalignment amount and misalignment direction of the CF 33a have distribution in the display surface.

[0097] Figure 5 3 is a diagram for describing the distribution of the misalignment amount L and misalignment direction of the CF 33a in the display surface of the display device 1. Here, it is assumed that when mounted on an electronic device, the display device 1 is mounted so that the display surface 101 faces the optical system 105 at a narrow distance, such as Figure 1 In this case, Figure 5 As shown, for the emission light from the pixels placed in the area 107 approximately close to the center in the display surface 101 of the display device 1, the emission light in the direction approximately perpendicular to the light emitting surface of the light emitting element 10 is sufficient to be incident on the optical system 105. Therefore, the emission light from the pixels placed in the area 107 does not need to have a relatively wide viewing angle characteristic. Therefore, in the pixels placed in the area 107, the light emitting element 10 and the CF 33a are arranged so that the relative misalignment between the light emitting element 10 and the CF 33a is not generated (that is, the misalignment amount L is set to L=0), as in the common display device 6.

[0098] On the other hand, for the emission light from the pixels placed in the area 109 near the periphery in the display surface 101 of the display device 1, the light emitted toward the outer edge of the display surface 101 needs to be incident on the optical system 105. Therefore, the emission light from the pixels placed in the area 109 needs to have a wider viewing angle characteristic toward the outer edge of the display surface 101 (in the example shown, in the right direction of the drawing). Therefore, in the pixels placed in the area 109, the light emitting element 10 and the CF 33a are arranged so that the relative misalignment between the light emitting element 10 and the CF 33a is generated by a prescribed misalignment amount L (L>0), which is different from that in the reference image. Figure 2 and Figure 3 In addition, in this case, the misalignment direction of the CF 33a is set to the direction from the center of the display surface 101 to the position where the pixel is located. Therefore, in the pixel placed in the area 109, a wider viewing angle characteristic is obtained toward the outer edge of the display surface 101.

[0099] Figure 5 Only the configuration of pixels in the area 107 roughly close to the center of the display surface 101 and the area 109 close to the periphery is shown. However, in the present embodiment, pixels are set in a gradual manner according to the position in the display surface 101 (i.e., in a manner in which the misalignment amount L of CF 33a becomes larger as the position shifts from the center of the display surface 101 toward the outer edge). For example, the interior of the display surface 101 is divided into a plurality of areas, and the misalignment amount L is set for each area according to the position of the area in the display surface 101. In addition, the misalignment direction of CF 33a is also set for each area. Here, in the present embodiment, the misalignment direction of CF 33a is simply set to any one of the horizontal direction and the vertical direction of the display surface 101. With this configuration, the distribution of the misalignment direction of CF 33a in the plane of the display surface 101 can be more easily managed. Therefore, the design is not complicated.

[0100] Note that in the above example, it is assumed that the display device 1 and the optical system 105 are arranged as follows Figure 1 , and therefore, the pixels are set so that the misalignment amount L of CF 33a becomes larger as the position shifts from the center of the display surface 101 to the outer edge. However, the present embodiment is not limited to this example. The division manner of the area and the misalignment amount L and misalignment direction of CF 33a in each area (i.e., the distribution of the misalignment amount L and misalignment direction of CFs 33a in the pixel according to the position in the display surface 101) can be set so that the desired viewing angle is appropriately obtained for each pixel in the display surface 101 according to the positional relationship between the display device 1 and the optical system 105 in the electronic device. Specifically, the misalignment direction of CF 33a can be set to the direction in the horizontal plane intended to obtain the viewing angle (i.e., the inclined direction from the direction perpendicular to the light-emitting surface to the direction of the desired viewing angle). The specific method for setting the misalignment amount L of CF 33a will be described in detail later below (3. Regarding the misalignment amount of CF).

[0101] In order to change the misalignment amount L and / or misalignment direction of CF 33a between regions, a transition region where the misalignment amount L and / or misalignment direction of CF 33a changes can be provided between regions. Specifically, the transition region is formed as a region where the area of ​​CF 33a is different from the area of ​​other CF 33a provided in a normal pixel. Figure 6 and Figure 7 is a diagram for describing a transition region where the misalignment amount L and / or misalignment direction of the CF 33 a changes. Figure 6 and Figure 7 The configuration near the boundary between two areas between which the misalignment amount L of the CF 33 a is different in the display device 1 is schematically shown. Figure 6 is a top view and shows the arrangement of CF 33a. Figure 7 is a side sectional view and shows the Figure 6 The AA section shown in the figure corresponds to the cross section. Figure 6 The area without hatching in FIG. 1 corresponds to the area where the white pixel CF 33a is not set. Figure 7 In, simplified Figure 2 The structure of the display device 1 shown in FIG. 1 only shows the first substrate 11, the light emitting element 10, the second component 52 and the CF layer 33. Figure 3 Same as in.

[0102] Figure 6 and Figure 7 As an example, a region 203 in which the misalignment amount L of CF 33a is 0, a region 205 adjacent to the region 203 and in which the misalignment amount L of CF 33a is a non-zero specified value, and a transition region 201 formed between the regions 203 and 205 are shown. As shown in the figure, the transition region 201 is formed as a region in which the area of ​​CF 33a is larger than the area of ​​normal CF 33a in other regions. In addition, the CF 33a located in the transition region 201 is formed so that the area of ​​CF 33a increases on the misaligned side. Therefore, in the region 205, the center of CF 33a is arranged to offset the center of the light-emitting surface of the light-emitting element 10 by the misalignment amount L>0 in the horizontal plane in the direction in which the area of ​​CF 33a located in the transition region 201 increases. Between other regions not shown, by providing a similar transition region 201, the misalignment amount L and / or the misalignment direction between regions can be changed.

[0103] Note that in the above example, the interior of the display surface 101 is divided into a plurality of regions, and the misalignment amount L and the misalignment direction are set for each region according to the position of the region in the display surface 101. However, the present embodiment is not limited to this example. For example, the misalignment amount L and the misalignment direction may be set based on pixels rather than regions, and the misalignment amount L and the misalignment direction may be changed in a continuous manner between pixels according to the position of the pixel in the display surface 101. Similarly, in this case, the misalignment amount L and the misalignment direction of the CF 33a in each pixel can be appropriately set in this way according to the positional relationship between the display device 1 and the optical system 105 in the electronic device, so that the desired viewing angle is obtained for each pixel in the display surface 101.

[0104] In the above, the configuration of the display device 1 according to the present embodiment is described. As described above, according to the present embodiment, the display device 1 has a configuration in which relative misalignment between the light emitting element 10 and the CF 33a is generated for each pixel according to the position of the pixel in the display surface 101 of the display device 1 and the viewing angle required for the pixel. Therefore, according to the present embodiment, a display device 1 with more excellent viewing angle characteristics can be obtained without causing color mixing.

[0105] Furthermore, in the present embodiment, since the viewing angle characteristics can be improved by the relative misalignment between the light emitting element 10 and the CF 33a, it is not necessary to adopt the configuration proposed so far for improving the viewing angle characteristics, for example, the configuration described in (1. Background of the present disclosure) above (for example, narrowing of the facing gap and miniaturization of the area of ​​the light emitting surface). Therefore, the viewing angle characteristics can be improved without reducing the light emitting characteristics or protection of the light emitting element 10 (OLED) or causing a reduction in brightness.

[0106] In addition, by changing the configuration of CF 33a only during the formation of the CF layer 33, the relative misalignment between the light emitting element 10 and CF33a can be obtained, and therefore, the display device 1 according to the present embodiment can be easily manufactured without increasing the number of manufacturing steps. Therefore, the desired effect can be obtained without increasing the production cost.

[0107] In addition, in general, in the case where color shift or color mixing occurs, color correction processing can be performed by the driving circuit. According to the present embodiment, it is not necessary to perform such color correction processing, because the occurrence of color shift and color mixing can be advantageously suppressed while improving the viewing angle characteristics. Therefore, the driving circuit can be obtained more simply, and therefore, the circuit scale of the driving circuit can be made smaller.

[0108] Note that although in the embodiment described above, the misalignment direction of CF 33a is set to only one of the horizontal direction and the vertical direction of the display surface 101, the present embodiment is not limited to this example. For example, the misalignment direction of CF 33a can be any two-dimensional direction in the horizontal plane. With this configuration, the misalignment direction of CF 33a can be set more finely for each pixel, and therefore, the viewing angle adjustment based on the pixel can be performed more strictly.

[0109] In addition, although in the embodiment described above, the display device 1 is a display device of an OCCF system in which the CF layer 33 is formed on the first substrate 11, the present embodiment is not limited to this example. The display device 1 according to the present embodiment may be a so-called facing CF system display device, which is manufactured by forming the CF layer 33 on the second substrate 34, and bonding the first substrate 11 and the second substrate 34 together so that the CF layer 33 faces the light emitting element 10.

[0110] In addition, although in the embodiment described above, the display device 1 has a configuration in which one pixel includes sub-pixels of four colors, namely, a red pixel, a green pixel, a blue pixel, and a white pixel, the present embodiment is not limited to this example. In addition, in a display device having another pixel configuration, by generating a relative misalignment between the light emitting element 10 and the CF 33a in at least a partial area in the display surface, an effect of improving the viewing angle characteristics can be similarly obtained.

[0111] Furthermore, the method for arranging pixels in the display device 1 is not limited to the above-mentioned triangle arrangement. For example, similar effects can be obtained by other pixel arrangements such as stripe arrangement, diagonal arrangement, and rectangular arrangement.

[0112] (3. About the misalignment of CF)

[0113] A method for setting the misalignment amount L of the CF 33a will now be described. As described above, in the present embodiment, the misalignment amount L of the CF 33a in a pixel is set according to the viewing angle required for the pixel. Figures 8 to 11 , describes a method for setting the misalignment amount L of the CF 33a in a pixel when the viewing angle required for the pixel is θ0. Figures 8 to 11 2 is a diagram for describing a method for setting the misalignment amount L of the CF 33 a . Figures 8 to 11 The light emitting portion 24 of one light emitting element 10 , one CF 33 a (in the illustrated example, CF 33R) provided to correspond to the light emitting element 10 , and the display surface 101 of the display device 1 are all shown in a simulated manner.

[0114] like Figures 8 to 11 As shown, the case where the viewing angle of the pixel of interest is θ0 refers to when the emitted light from the light emitting portion 24 passes through the CF 33R and other dielectric layers (reference Figure 2In the case where light is emitted from the display surface 101 in a direction having an angle of θ0 with respect to the direction perpendicular to the display surface 101, the first component 51, the protective film 31, the flattening film 32, etc. described above are provided. Here, for simplicity, it is assumed that the dielectric layer other than CF 33R contains a uniform material. If the refractive index of the material is represented by n1, the refractive index of CF 33R is represented by n2, and the refractive index of the air layer outside the display surface 101 is represented by n0, when the emitted light from the display surface 101 has an angle θ0, the emission angle θ1 (the angle of the emitted light relative to the direction perpendicular to the light emitting surface of the light emitting portion 24) of the emitted light from the light emitting portion 24 can be expressed by the law of refraction by mathematical formula (1) below.

[0115] [Mathematical formula 1]

[0116]

[0117] In other words, if the light emitted from the light emitting portion 24 at the emission angle θ1 passes through the CF 33R and other dielectric layers and travels, the light having the viewing angle θ0 is emitted from the display surface 101. Therefore, the misalignment amount L of the CF 33R for obtaining the light having the viewing angle θ0 on the display surface 101 can be set to a value such that the light emitted from the light emitting portion 24 at the emission angle θ1 passes through the CF 33R and other dielectric layers. Here, as shown in reference Figure 2 As described above, dielectric layers such as the first component 51 and the protective film 31 exist just above the light emitting portion 24, and due to this structure, the emitted light from the light emitting portion 24 must pass through these dielectric layers. Therefore, there is no need to consider the conditions under which the emitted light from the light emitting portion 24 passes through these dielectric layers. Therefore, finally, the misalignment amount L of CF 33R for obtaining light with a viewing angle θ0 on the display surface 101 can be set to such a value that the emitted light with an emission angle θ1 from the light emitting portion 24 passes through CF 33R. Therefore, in the present embodiment, the misalignment amount L of CF 33R can be set to such a value that the emitted light with an emission angle θ1 from the light emitting portion 24 is incident on the lower surface of CF 33R.

[0118] First, for simplicity, it is assumed that light is emitted from one point at the center of the light emitting surface of the light emitting portion 24, and the range of the misalignment amount L of the CF 33R in this case is set. In this case, the case where the value of the misalignment amount L of the CF 33R is the largest is the case where the emitted light from the center of the light emitting surface of the light emitting portion 24 is incident on the end of the lower surface of the CF 33R on the side close to the light emitting portion 24. Figure 833R and the trajectory of the light beam in this case, wherein the emitted light from the center of the light emitting surface of the light emitting portion 24 is incident on the end (in the example shown, the left end) of the lower surface of the CF33R on the side close to the light emitting portion 24. Figure 8 When the positional relationship is shown, the misalignment amount L of CF 33R can be expressed by mathematical formula (2) through geometric consideration.

[0119] [Mathematical formula 2]

[0120]

[0121] Here, the width of CF 33R is represented by w2, the distance in the stacking direction from the surface of the light emitting portion 24 to the lower surface of CF 33R is represented by g1, and the distance in the horizontal plane from the light emitting position in the light emitting portion 24 to the position where the emitted light is incident on CF 33R is represented by d.

[0122] On the other hand, assuming that light is emitted from a point at the center of the light-emitting surface of the light-emitting portion 24, the case where the value of the misalignment amount L of CF 33R is the smallest is the case where the emitted light from the center of the light-emitting surface of the light-emitting portion 24 is incident on the end of the lower surface of CF 33R on the side away from the light-emitting portion 24. Fig. 9 FIG. 2 shows the positional relationship between the light emitting section 24 and the CF 33R and the trajectory of the light beam in this case, wherein the emitted light from the center of the light emitting surface of the light emitting section 24 is incident on the end (in the example shown, the right end) of the lower surface of the CF 33R on the side away from the light emitting section 24. Fig. 9 When the positional relationship is shown, the misalignment amount L of CF 33R can be expressed by mathematical formula (3) through geometric consideration.

[0123] [Mathematical formula 3]

[0124]

[0125] Based on the above considerations, assuming that light is emitted from a point at the center of the light-emitting surface of the light-emitting portion 24, if the misalignment amount L of the CF 33R is set to satisfy the following mathematical formula (4), then for the emitted light from the display surface 101, a viewing angle θ0 can be obtained.

[0126] [Mathematical formula 4]

[0127]

[0128] However, actually, light may be emitted from the light emitting section 24 from an area other than the center of the light emitting surface of the light emitting section 24. Therefore, next, the range of the misalignment amount L of the CF 33R is set more finely by further considering the light emitting position in the light emitting surface of the light emitting section 24. In the case where the light emitting position in the light emitting surface of the light emitting section 24 is considered, the case where the value of the misalignment amount L of the CF 33R is the largest is the case where the emitted light from the light emitting position of the light emitting surface of the light emitting section 24 closest to the CF 33R is incident on the lower surface of the CF 33R. Fig.10 The positional relationship between the light emitting section 24 and the CF 33R in this case and the trajectory of the light beam are shown, wherein the emitted light from the light emitting position (in the example shown, the right end) of the light emitting surface of the light emitting section 24 closest to the CF 33R is incident on the lower surface of the CF 33R. Note that, as an example, Fig.10 FIG. 2 shows the positional relationship between the light emitting section 24 and the CF 33R and the trajectory of the light beam in the case where the emitted light from the light emitting section 24 is incident on the end portion (in the example shown, the left end) of the lower surface of the CF 33R on the side close to the light emitting section 24, and FIG. Figure 8 When the light emitting unit 24 and CF 33R have Fig.10 When the positional relationship is shown, the misalignment amount L of the CF 33R can be expressed by mathematical formula (5) below through geometric consideration. Here, the width of the light emitting portion 24 is represented by w1.

[0129] [Mathematical formula 5]

[0130]

[0131] On the other hand, considering the light-emitting position in the light-emitting surface of the light-emitting portion 24, the case where the value of the misalignment amount L of CF 33R is the smallest is the case where the emitted light from the light-emitting position of the light-emitting surface of the light-emitting portion 24 farthest from CF 33R is incident on the lower surface of CF33R. Fig.11 The positional relationship between the light emitting section 24 and the CF 33R in this case and the trajectory of the light beam are shown, wherein the emitted light from the light emitting position (in the example shown, the left end) of the light emitting surface of the light emitting section 24 farthest from the CF 33R is incident on the lower surface of the CF 33R. Note that, as an example, Fig.11 FIG. 2 shows the positional relationship between the light emitting section 24 and the CF 33R and the trajectory of the light beam in the case where the emitted light from the light emitting section 24 is incident on the end (in the example shown, the left end) of the lower surface of the CF 33R on the side close to the light emitting section 24, and FIG. Figure 8 When the light emitting unit 24 and CF 33R have Fig.11When the positional relationship is shown, the misalignment amount L of CF 33R can be expressed by mathematical formula (6) through geometric considerations as follows.

[0132] [Mathematical formula 6]

[0133]

[0134] On the top Fig.10 and Fig.11 In the Figure 8 , and calculate the misalignment amount L of CF 33R in the case where the emitted light from the light emitting portion 24 is incident on the end of the lower surface of CF 33R on the side close to the light emitting portion 24. The same applies to Fig. 9 , where the emitted light from the light emitting portion 24 is incident on the end of the lower surface of the CF 33R on the side away from the light emitting portion 24. Therefore, finally, the range of values ​​that the misalignment amount L of the CF 33R can take in order to obtain the viewing angle θ0 of the emitted light from the display surface 101 can be expressed by the mathematical formula (7) below. In other words, if the misalignment amount L of the CF 33R is set to satisfy the following mathematical formula (7), the viewing angle θ0 of the emitted light from the display surface 101 can be obtained.

[0135] [Mathematical formula 7]

[0136]

[0137] In the above, a method for setting the misalignment amount L of CF 33R is described. Note that in the above example, the dielectric layer is regarded as a uniform material, and for simplicity, it is assumed that the refractive index of the material is n2, and the range that the misalignment amount L of CF 33a can take is calculated. In the case of trying to find the range of the misalignment amount L more strictly, it can be imagined that the actual display device 1 (for example, in Figure 2 The structure of the display device shown in FIG. 1 ) and similar calculations can be performed while taking into account the refractive index of each layer.

[0138] (4. Modification example)

[0139] Some modified examples of the above-described embodiments will now be described.

[0140] (4-1. Method for Producing Relative Misalignment between Light Emitting Element and CF)

[0141] In the above embodiment, in order to generate relative misalignment between the light emitting element 10 and the CF 33a, a transition region 201 in which the region of the CF 33a is different from the region of other normal CF 33a is provided in the CF layer 33, as shown in FIG. Figure 6 and Figure 7However, in the present embodiment, the method for generating relative misalignment between the light emitting element 10 and the CF 33a is not limited to the above method, and may be other methods.

[0142] Now refer to Fig.12 A modified example of generating relative misalignment between the light emitting element 10 and the CF 33a by another method is described. Fig.12 is a diagram for describing another method for generating relative misalignment between the light emitting element 10 and the CF 33a. Fig.12 In, with Figure 3 and Figure 7 , the cross-sectional structure in the stacking direction of the display device 1a according to the present modification example is simplified, and only the first substrate 11, the light emitting element 10, the second component 52, and the CF layer 33 are shown. Note that the display device 1a according to the present modification example has a configuration similar to the display device 1 according to the above-described embodiment, except that the method for generating relative misalignment between the light emitting element 10 and the CF 33a is different. Therefore, in the following description about the present modification example, the contents different from the above-described embodiment are mainly described, and the detailed description of the contents different from the above-described embodiment is omitted.

[0143] In this modified example, as in the above-described embodiment, the inside of the display surface of the display device 1a is divided into a plurality of regions, and the misalignment amount L and the misalignment direction can be set for each region according to the position in the display surface of the region. As an example, Fig.12 203 where the misalignment amount L of CF 33a is 0, a region 205 adjacent to the region 203 and where the misalignment amount L of CF 33a is a prescribed value other than zero, and a transition region 207 provided between the region 203 and the region 205 are shown, similar to FIG. Figure 7 . As shown in the figure, in the present modified example, the transition region 207 is formed as a region in which the pitch of the light emitting elements 10 (i.e., the pixel pitch) is set to be narrower than the normal pitch of other regions. In addition, in the transition region 207, the pixel pitch is adjusted so that the setting pitch of the light emitting elements 10 is reduced on the misaligned side. Therefore, in the region 205, in the direction in which the setting pitch of the light emitting elements 10 is reduced, the center of the CF 33a is placed to be offset from the center of the light emitting surface of the light emitting portion 24 in the horizontal plane by a misalignment amount L>0. Similarly, between other regions not shown, by providing similar transition regions 207, the misalignment amount L and / or the misalignment direction can be changed between regions.

[0144] Note that, also in this modified example, the misalignment amount L and the misalignment direction may be set not on an area basis but on a pixel basis, and the misalignment amount L and the misalignment direction may be changed in a continuous manner between pixels according to the position of the pixel in the display surface, as in the above-described embodiment. In addition, the misalignment direction of the CF 33a may be only one of the horizontal direction and the vertical direction of the display surface 101, or may be an arbitrary direction in two dimensions in the horizontal plane.

[0145] In addition, as another method for generating relative misalignment between the light emitting element 10 and the CF 33a, a region where the CF 33a is not provided may be formed in the CF layer 33. For example, as in the above-described embodiment, the inside of the display surface of the display device is divided into a plurality of regions, and in the case where the misalignment amount L and the misalignment direction are set for each region according to the position in the display surface of the region, a transition region between the regions is formed as a region a having a prescribed distance where the CF 33 is not provided. For example, if a region where the CF 33a is not provided by an amount of 1 / 3 of the arrangement pitch of the light emitting element 10 is set as the transition region, in the direction in which the region where the CF 33a is not provided is formed, the center of the light emitting surface of the light emitting element 10 and the center of the CF 33a are offset in the horizontal plane by 1 / 3 of the arrangement pitch of the light emitting element 10 between before and after the transition region. That is, the misalignment amount L and the misalignment direction may be changed between before and after the transition region.

[0146] (4-2, reflector configuration not provided)

[0147] In the above embodiment, the reflector 53 is disposed between pixels to increase the brightness (see Figure 2 ). However, the present embodiment is not limited to this example, and the reflector 53 is not necessarily required to be provided in order to achieve the purpose of improving the viewing angle characteristics.

[0148] Now refer to Fig.13 The description does not provide such a modified example of the reflector 53 . Fig.13 is a diagram showing a configuration example of a display device 1b according to a modification example in which the reflector 53 is not provided. Fig.13 , the cross-sectional structure in the stacking direction of the display device 1b according to the present modification example is simplified, and only the first substrate 11, the light emitting element 10, the second component 52a and the CF layer 33 are shown. Figure 3 and Figure 7 Note that the display device 1b according to the present modification example has a similar structure to the display device 1 according to the above-described embodiment, except that the reflector 53 is not provided. Therefore, in the following description about the present modification example, the contents different from the above-described embodiment are mainly described, and the detailed description of the contents different from the above-described embodiment is omitted.

[0149] like Fig.13 As shown, in the display device 1b according to this modified example, a second component 52a that is provided between pixels and serves as a pixel defining film that defines the pixels is provided, instead of the second component 52 of the display device 1 according to the above-mentioned embodiment. In the above-mentioned embodiment, the second component 52a is formed as a layer having a thinner film thickness than the second component 52. Therefore, the area of ​​the side wall of the opening of the second component 52a is not sufficiently ensured as the area directly above the light-emitting portion of the light-emitting element 10 (that is, for the first component embedded in the opening of the second component 52a, the relationship as described above cannot be sufficiently ensured for the height or area of ​​the light incident surface or the light-emitting surface), and the surface of the second component 52a cannot be used as a reflector. That is, the display device 1b is a display device that does not provide a reflector.

[0150] Similarly, in the display device 1b where a reflector is not provided, by generating relative misalignment between the light emitting element 10 and the CF 33a, the wide viewing angle characteristics of the pixel including the light emitting element can be improved in the direction in which the CF 33a is relatively offset, as in the above embodiment. That is, an effect similar to that of the above embodiment can be obtained.

[0151] (4-3. Other methods for setting the misalignment amount L)

[0152] As described above in (3. Regarding the misalignment amount of CF), in the above embodiment, the misalignment amount L of CF 33a is set by specifying the condition that the emission light from the light emitting section 24 is incident on the lower surface of CF 33R. However, the present embodiment is not limited to this example. For example, it is assumed that color conversion will be appropriately performed according to the characteristics of the emission light from the light emitting section 24, the characteristics of CF 33a, etc., and light of desired characteristics can be emitted from the display surface 101 even in the case where the emission light from the light emitting section 24 is incident on the side of CF 33a. Therefore, the misalignment amount L of CF 33a can also be set in consideration of the case where the emission light from the light emitting section 24 is incident on the side of CF 33a.

[0153] Now refer to Fig.14 Such a modification example is described in which the misalignment amount L of the CF 33 a is set also in consideration of the case where the emission light from the light emitting section 24 is incident on the side surface of the CF 33 a . Fig.14 3 is a diagram for describing a method of setting the misalignment amount L of the CF 33a also in consideration of the case where the emitted light from the light emitting section 24 is incident on the side of the CF 33a. Figures 8 to 11 similar, Fig.14The light emitting section 24 of one light emitting element 10 provided in the display device according to the present modification example, one CF 33a (CF 33R in the example shown) provided corresponding to the light emitting element 10, and the display surface 101 of the display device are simulatedly shown. In addition, the dielectric layer is regarded as a layer containing a uniform material having a refractive index of n2.

[0154] Herein, for the sake of simplicity, it is assumed that light is emitted from one point at the center of the light emitting surface of the light emitting portion 24. In this case, in the case where the emitted light from the light emitting portion 24 is incident on the side surface of the CF 33a, the case where the value of the displacement amount L of the CF 33R is the largest is the case where the emitted light from the light emitting portion 24 is incident on the vicinity of the upper end of the side surface of the CF 33a. Herein, for the sake of simplicity, it is assumed that the emitted light from the light emitting portion 24 is incident on the upper end of the side surface of the CF 33a. Fig.14 FIG. 2 shows the positional relationship between the light emitting section 24 and the CF 33R and the trajectory of the light beam in the case where the emitted light from the light emitting section 24 is incident on the upper end of the side surface of the CF 33R. Fig.14 When the positional relationship is shown, the misalignment amount L of CF 33R can be expressed by mathematical formula (8) through geometric considerations as follows.

[0155] [Mathematical formula 8]

[0156]

[0157] Here, the thickness of CF 33R is represented by h2. Within the distance d in the horizontal plane from the light emitting position in the light emitting portion 24 to the position where the emitted light is incident on CF 33R, the length of the portion corresponding to the distance g1 in the stacking direction from the surface of the light emitting portion 24 to the lower surface of CF 33R is represented by d1. And within the distance d, the length of the portion corresponding to the thickness h2 of CF 33R is represented by w p express.

[0158] Therefore, by also considering the case where the emitted light from the light emitting portion 24 is incident on the side surface of the CF 33a, the upper limit value of the range that the displacement amount L of the CF 33R can take is made larger. Fig.14In it is assumed that light is emitted from a point at the center of the light-emitting surface of the light-emitting portion 24. However, if the case where light is emitted from other parts of the light-emitting surface is also considered, as in the consideration in the above (3, regarding the misalignment amount of CF), then finally, the range that the displacement amount L of CF 33R can take can be expressed by the mathematical formula (9) below. In other words, in this modified example, if the misalignment amount L of CF 33R is set to satisfy the following mathematical formula (9), the viewing angle θ0 of the emitted light from the display surface 101 can be obtained. Note that, in fact, if the emitted light from the light-emitting portion 24 is not incident on the "near the upper end" of the side of CF 33a, the emitted light does not pass through CF 33a, and color conversion is not properly performed. Therefore, in the following mathematical formula (9), the case where the emitted light from the light-emitting portion 24 is incident on the "upper end" of the side of CF33a, that is, the case where L is equal to the upper limit value, is excluded.

[0159] [Mathematical formula 9]

[0160]

[0161] Note that instead of analytically setting the misalignment amount L as described above, another method of setting the misalignment amount L of CF 33a may be to repeatedly perform optical simulations and experiments using samples manufactured based on the simulation results to find the optimal misalignment amount and optimal misalignment direction of CF 33a and the optimal distribution of CF 33a in the display surface in a trial and error manner.

[0162] In the above, some modification examples of the present embodiment are described. Note that the configuration that the display device according to the present embodiment can have and the configuration that the display device according to the modification example can have (described above) can be used in combination with each other within the scope of feasibility. For example, the above methods can be appropriately combined to generate relative misalignment between the light emitting element 10 and the CF 33a.

[0163] (5. Application examples)

[0164] Application examples of the display device according to the above-described embodiment and modification examples will now be described.Herein, some examples of electronic devices in which the display device according to the above-described embodiment and modification examples can be used are described.

[0165] Fig.15 1 is a diagram showing the appearance of a smartphone as an example of an electronic device that can use the display device according to the present embodiment and the modified example. Fig.15 As shown, the smartphone 301 includes an operation section 303 including buttons and accepting operations input by a user, and a display section 305 displaying various information. The display section 305 may include any display device according to the present embodiment and the modified examples.

[0166] Fig.16 and Fig.17 : is a diagram showing the appearance of a digital camera as another example of an electronic device that can use the display device according to the present embodiment and the modified example. Fig.16 1 shows an external view of the digital camera 311 when viewed from the front (subject side), and Fig.17 FIG. 3 shows the appearance of the digital camera 311 when viewed from the back. Fig.16 and Fig.17 As shown, the digital camera 311 includes a main body portion (camera body) 313, an interchangeable lens unit 315, a grip portion 317 gripped by a user during shooting, a monitor 319 that displays various information, and an EVF 321 that displays a through image observed by the user during shooting. The monitor 319 and the EVF 321 may include any display device according to the present embodiment and the modified example.

[0167] Fig.18 1 is a diagram showing the appearance of an HMD as another example of an electronic device that can use the display device according to the present embodiment and the modified example. Fig.18 As shown, the HMD 331 includes a glasses-type display portion 333 that displays various information and an ear fixing portion 335 that is fixed to the user's ear during wearing. The display portion 333 may include any display device according to the present embodiment and the modified examples.

[0168] In the above, some examples of electronic devices that can use the display device according to the present embodiment and the modified example are described. Note that the electronic devices that can use the display device according to the present embodiment and the modified example are not limited to the electronic devices described above as examples, and the display device can be used for display devices mounted on electronic devices in all fields that perform display based on image signals input from the outside or image signals generated internally, such as television devices, electronic books, PDAs, notebook PCs, video cameras, HMDs, and game devices.

[0169] [Example]

[0170] The following experiment was conducted to verify the effect of improving the viewing angle characteristics by the display device 1 according to the present embodiment described above. In this experiment, a sample of a display device having the same Figure 2The display device 1 according to the present embodiment shown in the figure is actually driven, and the chromaticity difference according to the viewing angle of the light emitted from the display surface is measured. The configuration in which the sub-pixels of the four colors of red, green, blue and white are combined into one pixel is used as a light-emitting pixel (that is, the three colors of red, green and blue are used as CF). The spacing between the pixels each including the sub-pixels of the four colors is set to 6.8μm. In addition, the film thickness of the CF is set to 2μm.

[0171] However, in the display device manufactured by using Figure 6 and Figure 7 A configuration similar to the configuration shown in the figure is formed only in a part of the display surface, in which a region where relative misalignment is generated between the light-emitting element and the CF by the misalignment amount L is formed. In other regions, as in the usual configuration, no relative misalignment is generated between the light-emitting element and the CF, and the center of the light-emitting surface of the light-emitting element and the center of the CF are caused to roughly coincide in the horizontal plane (that is, the misalignment amount L is set to L=0). In the present experiment, the desired viewing angle on the display surface is set to 30°. In the above-mentioned region where relative misalignment between the light-emitting element and the CF is generated, the misalignment direction of the CF is set to the same direction as the direction intended to obtain the above-mentioned viewing angle. In addition, taking into account the refractive index, thickness, etc. of each layer of the manufactured display device, the misalignment amount L in the region is set by the method described in (3, regarding the misalignment amount of CF) above. Specifically, L=0.6μm is used as a value that satisfies the above-mentioned mathematical formula (7).

[0172] The display device was actually driven, and the u'v' chromaticity points of each of the red, green, and blue colors of the emitted light from the display surface were measured using a spectrophotometer (CS-2000 manufactured by Konica Minolta). The u'v' chromaticity point was measured at each of the position corresponding to the 30° viewing angle of the emitted light from the region where relative misalignment was generated between the light emitting element and the CF (misalignment generation region), the position corresponding to the 30° viewing angle of the emitted light from the region where relative misalignment was not generated between the light emitting element and the CF (misalignment non-generation region), and the position corresponding to the 0° viewing angle of the emitted light from the misalignment non-generation region. The results are shown in Table 1 below.

[0173] [Table 1]

[0174]

[0175]

[0176] In Table 1 above, if attention is focused on the measured values ​​of the u'v' chromaticity point in the position corresponding to the 30° viewing angle in the misalignment generation area, it can be seen that values ​​substantially equal to those of the u'v' chromaticity point in the position corresponding to the 0° viewing angle in the misalignment non-generation area have been obtained. From this result, it can be seen that by using the configuration according to the present embodiment, the value of the u'v' chromaticity point equal to the value in the case of viewing the display surface from the front has been obtained at the desired viewing angle, and improvement in viewing angle characteristics has been achieved.

[0177] On the other hand, if the measured values ​​of the u'v' chromaticity point in the position corresponding to the viewing angle of 30° in the misaligned non-production area and the u'v' chromaticity point in the position corresponding to the viewing angle of 0° in the misaligned non-production area are compared, it can be seen that the value of the v' chromaticity point of the blue color in particular is greatly different from 0.12. Generally speaking, if the u'v' chromaticity point changes by 0.05 or more, people can recognize the change in color. Therefore, this result indicates that the color of the emitted light from the misaligned non-production area may change to the extent that the user can clearly recognize the change between the case where the viewing angle is 0° and the case where the viewing angle is 30°.

[0178] From the above results, it has been confirmed that the viewing angle characteristics can be improved by using the display device 1 according to the present embodiment.

[0179] (6. Supplement)

[0180] The preferred embodiments of the present disclosure have been described above with reference to the accompanying drawings, and the present disclosure is not limited to the above examples. Those skilled in the art may find various changes and modifications within the scope of the appended claims, and it should be understood that these changes and modifications will naturally fall within the technical scope of the present disclosure.

[0181] For example, although the embodiment in which the display device is an organic EL display is described as an example of the present disclosure in the above, the present disclosure is not limited to this example. The display device for the purpose of the present disclosure may be various display devices, as long as these display devices are display devices that can realize color display by using CF, for example, liquid crystal displays, plasma displays, and electronic paper devices. Similarly, in these other display devices, by arranging the light-emitting portion and the CF in this way, an effect similar to the above-mentioned embodiment can be obtained, so that in at least a partial area in the display surface, in a plane perpendicular to the stacking direction, a relative misalignment between the center of the light-emitting surface of the light-emitting portion and the center of the CF of the corresponding light-emitting portion is generated. Here, the light-emitting portion is a portion included in each pixel of the display device and emitting light toward the outside. For example, in an organic EL display (same as the above-mentioned embodiment), the light-emitting portion corresponds to a light-emitting element. In addition, for example, in a liquid crystal display, the light-emitting portion corresponds to an area corresponding to one pixel of the liquid crystal panel. In addition, for example, in a plasma display, the light-emitting portion corresponds to an area corresponding to one discharge unit of the plasma display panel.

[0182] In addition, the effects described in this specification are merely illustrative or exemplary effects and are not restrictive. That is, by using or replacing the above effects, the technology according to the present disclosure can achieve other effects that are clear to those skilled in the art from the description of this specification.

[0183] Additionally, the present technology may also be configured as follows.

[0184] (1) A display device comprising:

[0185] A plurality of light emitting parts are formed on the substrate; and

[0186] a color filter disposed on the light emitting portion to correspond to each of the plurality of light emitting portions,

[0187] The light-emitting portion and the color filter are arranged so that in at least a partial area of ​​the display surface, a relative misalignment is generated between the center of the light-emitting surface of the light-emitting portion and the center of the color filter corresponding to the light-emitting portion in a plane perpendicular to the stacking direction.

[0188] (2) The display device according to (1),

[0189] The areas of the plurality of color filters are distributed in the display surface, thereby generating the relative misalignment.

[0190] (3) The display device according to (2),

[0191] A plurality of regions are arranged in the display surface, and an area of ​​a color filter between adjacent regions is different from areas of other color filters, so that the relative misalignment is generated by using different misalignment amounts between regions.

[0192] (4) The display device according to (2),

[0193] The areas of the plurality of color filters change gradually in the display surface, thereby generating the relative misalignment.

[0194] (5) The display device according to any one of (1) to (4),

[0195] Wherein, in at least a part of the area, the spacing of the light emitting parts arranged on the substrate is different from the spacing in other areas, thereby causing the relative misalignment.

[0196] (6) The display device according to any one of (1) to (5),

[0197] The misalignment amount of the relative misalignment increases as it approaches the outer edge of the display surface.

[0198] (7) The display device according to any one of (1) to (6),

[0199] Wherein, according to the viewing angle required by the pixels including the light-emitting portion and the color filter, the misalignment amount and the misalignment direction of the relative misalignment of the center of the color filter corresponding to the light-emitting portion relative to the center of the light-emitting surface of the light-emitting portion are set in the plane perpendicular to the stacking direction, and the relative misalignment is generated in the light-emitting portion and the color filter.

[0200] (8) The display device according to any one of (1) to (7),

[0201] Among them, in the relative misalignment, the misalignment direction of the center of the color filter corresponding to the light-emitting portion relative to the center of the light-emitting surface of the light-emitting portion in the plane perpendicular to the stacking direction is from the center of the display surface toward the position where the light-emitting portion and the color filter exist in the display surface, and the relative misalignment is generated in the light-emitting portion and the color filter.

[0202] (9) The display device according to any one of (1) to (8), further comprising:

[0203] a first member disposed just above the light emitting portion, the first member having a substantially truncated cone or pyramid shape in which a cross-sectional area in an in-plane direction perpendicular to the stacking direction gradually increases as it approaches a top and configured to spread emission light from the light emitting portion; and

[0204] The second component is arranged between the first components and between adjacent light-emitting parts, wherein the refractive index of the first component is greater than the refractive index of the second component.

[0205] (10) The display device according to any one of (1) to (9),

[0206] The light emitting portion is a light emitting element including an organic light emitting diode, and the display device is an organic EL display.

[0207] (11) An electronic device comprising:

[0208] A display device is configured to display based on an image signal,

[0209] Wherein, the display device comprises

[0210] A plurality of light emitting parts are formed on the substrate; and

[0211] a color filter disposed on the light emitting portion to correspond to each of the plurality of light emitting portions, and

[0212] The light-emitting portion and the color filter are arranged so that in at least a partial area of ​​the display surface, relative misalignment occurs between the center of the light-emitting surface of the light-emitting portion and the center of the color filter corresponding to the light-emitting portion in a plane perpendicular to the stacking direction.

[0213] Reference numerals list

[0214] 1.1a,1b Display device

[0215] 10 Light-emitting elements

[0216] 11First substrate

[0217] 15 TFT

[0218] 21 first electrode

[0219] 22 second electrode

[0220] 23 Organic layer

[0221] 24 light emitting part

[0222] 25 Opening

[0223] 31 Protective film

[0224] 32 Flattening film

[0225] 33 CF layer

[0226] 33R, 33G, 33B CF

[0227] 34 Second substrate

[0228] 35 Sealing resin film

[0229] 51 First Part

[0230] 52 Second Part

[0231] 53 reflector

[0232] 101 display surface

[0233] 301 Smartphone (electronic device)

[0234] 311 Digital Camera (Electronic Equipment)

[0235] 331 HMD (electronic device).

Claims

1. A display device, comprising: a first area of ​​the display device, a second area of ​​the display device, and a third area of ​​the display device, The first region and the second region are arranged along a first direction; and Among them, in the first area: A plurality of first light emitting portions are formed on the substrate. A plurality of first color filters are arranged in the light emitting direction, Each of the plurality of first light emitting portions corresponds to each of the plurality of first color filters, The first distance is a distance between a center of one of the plurality of first light emitting portions and a center of a corresponding one of the plurality of first color filters in a first horizontal cross-sectional view perpendicular to the stacking direction, Wherein, in the second region: A plurality of second light emitting portions are formed on the substrate. A plurality of second color filters are arranged in the light emitting direction, Each of the plurality of second light emitting sections corresponds to each of the plurality of second color filters, The second distance is a distance between the center of one of the plurality of second light emitting portions and the center of a corresponding one of the plurality of second color filters in a second horizontal cross-sectional view perpendicular to the stacking direction, The first area is disposed in a central portion of a display area and the second area is disposed in a first peripheral area of ​​the display area, wherein the second distance set in the first peripheral area is greater than the first distance set in the central part; Wherein, in the third area disposed between the first area and the second area: A plurality of third light emitting portions are formed on the substrate, A plurality of third color filters are arranged in the light emitting direction, Each of the plurality of third light emitting sections corresponds to each of the plurality of third color filters, In a plan view, a size of at least one of the plurality of third color filters is larger than a size of at least one of the plurality of first color filters, and a size of at least one of the plurality of third color filters is larger than a size of at least one of the plurality of second color filters; Colors of the plurality of first color filters, colors of the plurality of second color filters, and colors of the plurality of third color filters are the same.

2. The display device according to claim 1, Also comprising a fourth area, wherein the first area and the fourth area are arranged along a second direction; in, In the fourth region: A plurality of fourth light emitting portions are formed on the substrate, A plurality of fourth color filters are arranged in the light emitting direction, Each of the plurality of fourth light emitting sections corresponds to each of the plurality of fourth color filters, a fourth distance is a distance between a center of one of the plurality of fourth light emitting portions and a center of a corresponding one of the plurality of fourth color filters in a fourth cross-sectional view perpendicular to the stacking direction, The fourth area is disposed in a second peripheral area of ​​the display area, and The colors of the plurality of fourth color filters are the same as the colors of the plurality of first color filters, and the colors of the plurality of second color filters are the same as the colors of the plurality of third color filters.

3. The display device according to claim 2, in, The fourth distance is greater than the first distance.

4. The display device according to claim 1, The third region is a transition region.

Images