Display device

Abstract

A display device includes a plurality of pixels arranged in a first direction and a second direction. Each pixel includes: a first sub-pixel; a second sub-pixel arranged to be adjacent to the first sub-pixel in the first direction; a third sub-pixel arranged to be adjacent to at least one of the first sub-pixel and the second sub-pixel in the second direction; and a light shielding portion arranged corresponding to a position on which the third sub-pixel is arranged so as to limit a viewing angle of the third sub-pixel in the first direction.

Description

[0001] This application is a divisional application of Chinese patent application No. 201510042518.6. Technical Field

[0002] The present disclosure relates to a display device including a plurality of sub-pixels in one pixel, and an electronic device using the display device. Background Art

[0003] The stripe array structure and the delta array structure are called pixel array structures in a display device using an electro-luminescence (EL) element, etc. As another structure, a pixel array structure disclosed in Japanese Unexamined Patent Application Publication No. 2011-249334 is known. Summary of the invention

[0004] The delta array structure is conducive to the wide opening of the pixel to achieve long life and wide viewing angle. However, it is difficult to avoid the uneven feeling of the line pattern in the row direction and column direction of the pixel. On the other hand, in the case of adopting the strip array structure, the uneven feeling can be avoided. However, the total length of the sub-pixel used for color separation in one pixel becomes longer, and the aperture ratio is reduced, and then, the brightness and life are deteriorated.

[0005] Therefore, as disclosed in Japanese Unexamined Patent Application Publication No. 2011-249334, a pixel array structure that achieves high resolution and secures an aperture ratio is proposed. In the pixel array structure disclosed in Japanese Unexamined Patent Application Publication No. 2011-249334, a first sub-pixel and a second sub-pixel are formed on a column in one pixel, and a third sub-pixel is formed on two rows adjacent to the first sub-pixel and the second sub-pixel, and therefore, the aperture ratio is improved. In this pixel array structure, the opening width of the third sub-pixel in the row direction is greater than the opening widths of the first sub-pixel and the second sub-pixel.

[0006] However, in the pixel array structure disclosed in Japanese Unexamined Patent Application Publication No. 2011-249334, since the opening width of the third sub-pixel in the row direction is different from the opening width of the first and second sub-pixels, the viewing angle characteristics are degraded. As an actual phenomenon, the color difference change occurs at the time of full-color emission (white light emission). As the pixel pitch becomes smaller, the phenomenon appears more obviously, and the hue of the image seen from the front of the display panel and the hue of the image seen obliquely are different from each other. Therefore, the viewing angle characteristics are degraded compared with the strip array structure and the delta array structure with the same opening width of the sub-pixels of each color. This phenomenon occurs significantly in high-resolution panels above 2000ppi, and the expectation of high-resolution displays has become a major problem in recent years. In particular, the resolution of the display panel used in the viewfinder or head-mounted display has reached a range above 2000ppi, and it is obvious that the display panel used for this application reduces the quality of the panel.

[0007] It is desirable to provide a display device and an electronic device that can achieve both a wide aperture and a wide viewing angle.

[0008] According to the present disclosure, a display device is provided, comprising a plurality of pixels arranged in a first direction and a second direction. Each pixel comprises: a first sub-pixel; a second sub-pixel arranged to be adjacent to the first sub-pixel in the first direction; a third sub-pixel arranged to be adjacent to at least one of the first sub-pixel and the second sub-pixel in the second direction; and a light shielding portion arranged corresponding to a position on which the third sub-pixel is arranged so as to limit the viewing angle of the third sub-pixel in the first direction.

[0009] According to the present disclosure, an electronic device is provided, comprising a display device in which a plurality of pixels are arranged in a first direction and a second direction. Each pixel comprises: a first sub-pixel; a second sub-pixel arranged to be adjacent to the first sub-pixel in the first direction; a third sub-pixel arranged to be adjacent to at least one of the first sub-pixel and the second sub-pixel in the second direction; and a light shielding portion arranged corresponding to a position on which the third sub-pixel is arranged so as to limit the viewing angle of the third sub-pixel in the first direction.

[0010] In the display device or the electronic device according to the present disclosure, the viewing angle of the third sub-pixel in the first direction is limited by the light shielding portion.

[0011] According to the display device and the electronic device in the present disclosure, since the viewing angle of the third sub-pixel in the first direction is limited by the light shielding portion, a wide aperture and a wide viewing angle can be simultaneously achieved.

[0012] The effects described here are not limited thereto, and may be any effects described in the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a plan view showing an example of a display device in a first embodiment according to the present disclosure;

[0014] Figure 2 It shows Figure 1 A plan view showing an example of an array structure of a color filter portion of a pixel in a display device shown in FIG.

[0015] Figure 3 It shows Figure 1 A plan view showing an example of the configuration of a color filter portion of one pixel in a display device shown in FIG.

[0016] Figure 4 It shows Figure 1 A plan view of an example of an array structure of a light emitting element in a display device shown in FIG.

[0017] Figure 5 It shows Figure 1 A cross-sectional view showing an example of a cross-sectional structure of a pixel in a display device shown in FIG.

[0018] Figure 6 It shows Figure 1 A block diagram of an example of a circuit configuration of a display device shown in FIG.

[0019] Figure 7 It shows Figure 1 A circuit diagram of an example of a driving circuit for a pixel in a display device shown in FIG.

[0020] Figure 8 It shows Figure 1 A cross-sectional view showing an example of a cross-sectional structure of a light-emitting element of a pixel in a display device shown in FIG.

[0021] Fig. 9 It shows Figure 1 A cross-sectional view of another example of a cross-sectional structure of a light-emitting element of a pixel in a display device shown in FIG.

[0022] Fig.10 It shows Figure 1 A plan view of a design example of a pixel in a display device shown in FIG.

[0023] Fig.11 It shows Fig.10 A characteristic diagram of the viewing angle characteristics of a pixel in the horizontal direction in the design example shown in FIG.

[0024] Fig.12 It shows Fig.10 A characteristic diagram of the viewing angle characteristics of a pixel in the vertical direction in the design example shown in FIG.

[0025] Fig.13 It shows Fig.10 Graph showing viewing angle characteristics of a pixel in the vertical direction when the width of the light shielding portion is large in the design example shown in FIG.

[0026] Fig.14 It shows Fig.10 Graph showing the viewing angle characteristics of a pixel in the vertical direction when the width of the light shielding portion is small in the design example shown in FIG.

[0027] Fig.15 is a characteristic diagram showing the viewing angle characteristics of a pixel in the vertical direction when no light shielding portion is provided, as a characteristic diagram of Fig.10 Comparative example of the design example shown in;

[0028] Fig.16 is a plan view showing an example of an array structure of a color filter portion of a pixel in a display device in a first modification example of the first embodiment;

[0029] Fig.17 is a plan view showing an example of an array structure of a color filter portion of a pixel in a display device in a second modification;

[0030] Fig.18 is a plan view showing an example of an array structure of a color filter portion of a pixel in a display device in a third modification;

[0031] Fig.19 It shows Fig.18 A plan view showing an example of the configuration of a color filter portion of one pixel in a display device shown in FIG.

[0032] Fig. 20 is a cross-sectional view showing an example of a cross-sectional structure of a pixel in a display device in a fourth modification;

[0033] Fig.21 is a cross-sectional view showing an example of a cross-sectional structure of a pixel in a display device in a fifth modification;

[0034] Fig. 22 is a plan view showing an example of an array structure of a color filter portion of a pixel in a display device in a second embodiment;

[0035] Fig.23 It shows Fig. 22 A plan view showing an example of the configuration of a color filter portion of one pixel in a display device shown in FIG.

[0036] Fig.24 It shows Fig. 22 A plan view of an example of an array structure of a light emitting element in a display device shown in FIG.

[0037] Fig.25 It shows Fig. 22 An explanatory diagram of the viewing angle characteristic of the third sub-pixel in the vertical direction in the display device shown in FIG.

[0038] Fig.26 is a plan view showing an example of a display device in a third embodiment;

[0039] Fig. 27 It shows Fig.26 A plan view of a first example of an array structure of a color filter portion of a pixel in a display device in FIG.

[0040] Fig.28 It shows Fig. 27 A plan view of an example of the configuration of a color filter portion of one pixel of the first example;

[0041] Fig.29 It shows Fig. 27 A plan view of an example of an array structure in which only color filters are provided without light shielding portions in the first example;

[0042] Fig.30 It shows Fig.26 A plan view of a second example of the array structure of the color filter portion of the pixel in the display device;

[0043] Fig.31 It shows Fig.30 A plan view of an example of the configuration of a color filter portion of one pixel in the second example;

[0044] Fig.32 It shows Fig.30 A plan view of an example of an array structure in which only color filters are provided without light shielding portions in the second example;

[0045] Fig.33 is an external view showing a configuration example of a head mounted display as a first example of a display device applied to an electronic device;

[0046] Fig.34 is a front appearance diagram showing a configuration example of a camera as a second example of a display device applied to an electronic device;

[0047] Fig.35 is a rear appearance diagram showing a configuration example of a camera as a second example of a display device applied to an electronic device;

[0048] Fig.36 is a plan view showing another configuration example of the display device; and

[0049] Fig.37 It shows Fig.36A plan view of an example of an array structure of a color filter portion of a pixel in a display device. DETAILED DESCRIPTION

[0050] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. The description will be made in the following order.

[0051] 1. First Embodiment (Example in which a light shielding portion is arranged in a central portion of one pixel)

[0052] 1.1 Construction Figures 1 to 9 )

[0053] 1.2 Specific Design Examples ( Figures 10 to 14 )

[0054] 1.3 Effect

[0055] 1.4. Modifications

[0056] 1.4.1 First Modification Example ( Fig.16 )

[0057] 1.4.2 Second Modification Example ( Fig.17 )

[0058] 1.4.3 Third Modification ( Fig.18 and Fig.19 )

[0059] 1.4.4 Fourth Modification ( Fig. 20 )

[0060] 1.4.5 Fifth Modification ( Fig.21 )

[0061] 2. Second Embodiment (Example of Arranging a Light Shielding Section in a Position Other Than the Center Part in One Pixel) Figure 22 to Figure 25 )

[0062] 2.1 Construction

[0063] 2.2 Function and Effect

[0064] 3 Third Embodiment (Example of Four-Color Display Device) Figure 26 to Figure 32 )

[0065] 3.1 First Example of Pixel Array Structure

[0066] 3.2 Second Example of Pixel Array Structure

[0067] 4 Examples of applying the display device to electronic equipment ( Figure 33 to Figure 35 )

[0068] 4.1 First application example ( Fig.33 )

[0069] 4.2 Second application example ( Fig.34 and Fig.35 )

[0070] 5 Other Implementation Methods ( Fig.36 and Fig.37 )

[0071] 1. First Implementation

[0072] 1.1 Construction

[0073] Overall structure of the display device 1

[0074] Figure 1 An example of a planar configuration of a display device in the first embodiment of the present disclosure is shown. The display device 1 is used for a television set or the like, and has a configuration in which a plurality of pixels 2 are arranged in a matrix shape in a first direction and a second direction in a display area 110 .

[0075] Each pixel 2 includes a first sub-pixel 2R, a second sub-pixel 2G, and a third sub-pixel 2B. The first sub-pixel 2R and the second sub-pixel 2G are arranged adjacent to each other in the first direction. The third sub-pixel 2B is arranged adjacent to the first sub-pixel 2R and the second sub-pixel 2G in the second direction.

[0076] In this embodiment, the array structure of the pixel 2 will be described, wherein the first direction is the vertical direction (Y direction) in the display surface, and the second direction is the lateral direction (X direction) in the display surface. Figure 1 In the display plane, the display plane refers to the plane parallel to the panel surface (XY plane). Figure 1 In the description, the direction perpendicular to the plate surface will be used as the Z direction, that is, the thickness direction of the pixel 2 is the Z direction.

[0077] The arrangement of the sub-pixels is not limited to the illustrated example, but, for example, the first sub-pixel 2R and the second sub-pixel 2G may be arranged in opposite directions. That is, the first sub-pixel 2R may be arranged adjacent to the lower side of the second sub-pixel 2G.

[0078] Pixel 2 array structure

[0079] Each pixel 2 includes a light emitting element that emits light of a predetermined color and a color filter 23 that transmits the light of the predetermined color. Figure 2 An example of an array structure of a color filter portion of the pixel 2 in the display device 1 is shown. Figure 3 An example of the configuration of a color filter portion of one pixel is shown. Figure 4 An example of an array structure of light-emitting elements of the pixel 2 is shown. Figure 5 An example of a cross-sectional structure of the pixel 2 is shown.

[0080] The first sub-pixel 2R includes a first light emitting element 10R ( Figure 4 and Figure 5 ) and a first color filter 23R ( Figure 2 , Figure 3 and Figure 5 The second sub-pixel 2G includes a second light-emitting element 10G ( Figure 4 and Figure 5 ) and a second color filter 23G ( Figure 2 , Figure 3 and Figure 5 The third subpixel 2B includes a third light emitting element 10B ( ) that emits a third color light LB having a shorter wavelength than the first color light LR and the second color light LG. Figure 4 and Figure 5 ) and a third color filter 23B ( Figure 2 , Figure 3 and Figure 5 ).

[0081] For example, the first light emitting element 10R emits red light as the first color light LR. For example, the second light emitting element 10G emits green light as the second color light LG. For example, the third light emitting element 10B emits blue light as the third color light LB. Each of the first light emitting element 10R, the second light emitting element 10G, and the third light emitting element 10B may be formed of an inorganic EL element other than the organic EL element described below, a semiconductor laser, or a light emitting diode (LED).

[0082] In each pixel 2, the light shielding portion 24 is provided as a black matrix. The light shielding portion 24 is arranged to correspond to the position on which the third sub-pixel 2B is arranged so as to limit the viewing angle of the third sub-pixel 2B in the first direction (Y direction). Figure 2 and Figure 3 As shown in the figure, the light shielding portion 24 is formed by a first light shielding portion 24-1 and a second light shielding portion 24-2. The first light shielding portion 24-1 is arranged on the boundary portion of the pixels adjacent to each other in the first direction. The second light shielding portion 24-2 is arranged on the central portion of the third sub-pixel 2B in one pixel. In this way, in one pixel, the first pixel area 2B-1 and the second pixel area 2B-2 are formed in the third sub-pixel 2B, and the second light shielding portion 24-2 serves as a boundary.

[0083] It is preferable that the planar shapes of the first light emitting element 10R, the second light emitting element 10G, and the third light emitting element 10B correspond to Figure 4, and the shape of the position where the color filter 23 and the light shielding portion 24 are arranged as shown in . Preferably, in one pixel, the third light emitting element 10B is separated at a portion corresponding to the position where the second light shielding portion 24-2 is provided. The width of the third light emitting element 10B and the width of the light shielding portion 24 in the second direction may be different from each other. The first light emitting element 10R, the second light emitting element 10G, and the third light emitting element 10B (light emitting surface) may include a light emitting layer 16C and a lower electrode 14 (reflection surface).

[0084] The light shielding portion 24 is formed of a black resin film mixed with a black coloring agent or whose optical density is 1 or more, or a thin film filter using the mutual interference of thin films. It is preferable to use a black resin film because the black resin film can form the light shielding portion 24 inexpensively and easily. The thin film filter is formed by laminating a thin film formed of a metal, a metal nitride, or a metal oxide in one or more layers, and light is attenuated using the mutual interference of the thin films. In particular, for the thin film filter, a film of alternately laminating chromium and chromium (III) oxide (Cr2O3) may be included.

[0085] For example, the color filter 23 is formed of a resin mixed with a pigment. By selecting the pigment, the light transmittance can be adjusted so that the light transmittance in the wavelength band of the target color is high and the light transmittance in other wavelength bands is low.

[0086] like Figure 5 As shown in FIG. 1 , the light emitting elements 10R, 10G, and 10B are provided on the first substrate 11. The light shielding portion 24 and the color filter 23 are provided on the second substrate 21. The first substrate 11 and the second substrate 21 are formed of glass, a silicon (Si) sheet, a resin, or the like. The first substrate 11 and the second substrate 21 and the light emitting elements 10R, 10G, and 10B are arranged to be opposed to each other, the light shielding portion 24 and the color filter 23 are arranged inside, and the intermediate layer 30 formed of a resin layer 32 and a protective film 31 is provided between the two substrates.

[0087] like Figure 5 As shown in , with respect to the first sub-pixel 2R and the third sub-pixel 2B, color separation is performed on each other in the second direction, and the color boundary 25 of the first color filter 23R and the third color filter 23B is a boundary. Similarly, with respect to the second sub-pixel 2G and the third sub-pixel 2B, color separation is performed on each other in the second direction, and the color boundary 25 of the second color filter 23G and the third color filter 23B is a boundary. Similarly, with respect to the first sub-pixel 2R and the second sub-pixel 2G, color separation is performed on each other in the second direction, and the color boundary 25 of the first color filter 23R and the second color filter 23G is a boundary.

[0088] In this way, in the first sub-pixel 2R and the second sub-pixel 2G, color separation is performed in both the first direction and the second direction by the color filter 23. That is, color separation is performed between pixels and between sub-pixels by the color filter 23. For this reason, with respect to the first sub-pixel 2R and the second sub-pixel 2G, the viewing angle is limited by the color filter 23 in the first direction and the second direction.

[0089] On the other hand, the third sub-pixel 2B has a configuration in which color separation is performed in the second direction by the color filter 23, but color separation is not performed in the first direction. That is, with respect to the third sub-pixel 2B, the viewing angle is limited in the second direction by the color filter 23, but the viewing angle is not limited in the first direction. With respect to the third sub-pixel 2B, the viewing angle in the first direction is limited by the light shielding portion 24. In this way, the viewing angle characteristics in the direction in which color separation is not performed are improved.

[0090] exist Figure 2 In, L BM-H represents the width of the light shielding portion 24 in the lateral direction, and L BM-V L represents the width of the light shielding portion 24 in the vertical direction. subpix1-H represents the opening width of the first sub-pixel 2R in the horizontal direction and L subpix1-V L represents the opening width of the first sub-pixel 2R in the vertical direction. subpix2-H represents the opening width of the second sub-pixel 2G in the horizontal direction, and L subpix2-V represents the opening width of the second sub-pixel 2G in the vertical direction.

[0091] In addition, L subpix3-H represents the opening width of the third sub-pixel 2B in the lateral direction, and Lsubpix3-V Indicates the opening width of the third sub-pixel 2B in the vertical direction. Here, the opening width of the third sub-pixel 2B indicates each opening width of the first pixel area 2B-1 and the second pixel area 2B-2 of the third sub-pixel 2B. In the present embodiment, since the light shielding portion 24 is provided on the central portion of the third sub-pixel 2B in the first direction and on the boundary portion of one pixel, the opening width L of each of the first pixel area 2B-1 and the second pixel area 2B-2 in the vertical direction is subpix3-V The same size.

[0092] In the second direction, it is preferred that the width of the light shielding portion 24 is smaller than the opening width of the third sub-pixel 2B. For example, it is preferred that the light shielding portion 24 has a rectangular basic shape, wherein the direction (second direction) separating the colors of the third sub-pixel 2B is the main axis, and as shown in Formula 1, it is preferred that the length of the main axis is smaller than the opening width of the third sub-pixel 2B.

[0093] L BM-H <Lsubpix3-H …(Formula 1)

[0094] Furthermore, as shown in the following formula 2, it is preferable that the opening width of the first subpixel 2R and the opening width of the second subpixel 2G are larger than the opening width of the third subpixel 2B in the direction in which color separation is performed.

[0095] L subpix3-H <L subpix1-H

[0096] L subpix3-H <L subpix2-H …(Formula 2)

[0097] Because the extraction of light is reduced, it is preferable that the light shielding portion 24 is not arranged on the boundary portion (color boundary 25) of each of the color filters 23R, 23G, and 23B. As described above, it is preferable that, in one pixel, the third light emitting element 10B is separated at a portion corresponding to the position at which the second light shielding portion 24-2 is provided. The reason for separating the third light emitting element 10B in one pixel is to avoid a phenomenon in which light emitted from the third light emitting element 10B is emitted at the second light shielding portion 24-2, interferes in the unit of the display panel, and then generates an unexpected peak.

[0098] Pixel 2 drive circuit and light-emitting diode structure

[0099] Figure 6 An example of a circuit configuration of the display device 1 is shown. Figure 7 An example of a driving circuit of a pixel 2 in a display device 1 is shown. The display device 1 is a device used as an organic EL television apparatus, includes organic elements as light-emitting elements 10R, 10G, and 10B, and includes, for example, a signal line driving circuit 120 and a scanning line driving circuit 130 near a display area 110, which are drivers for image display.

[0100] A pixel driving circuit 140 is disposed in the display area 110 . Figure 7 An example of a pixel driving circuit 140 is shown. The pixel driving circuit 140 is an active type driving circuit formed on the lower layer of the lower electrode 14 described below. That is, the pixel driving circuit 140 includes a driving transistor Tr1, a writing transistor Tr2, a capacitor (holding capacitance) Cs between the transistors Tr1 and Tr2, and a light emitting element 10R (10G or 10B) connected in series to the driving transistor Tr1 between the first power supply line (Vcc) and the second power supply line (GND). The driving transistor Tr1 and the writing transistor Tr2 are formed by ordinary thin film transistors, and their configuration is not particularly limited, that is, for example, it can be an inverse staggered structure (so-called bottom gate type) or it can be a staggered structure (top gate type).

[0101] In the pixel driving circuit 140, a plurality of signal lines 120A are arranged in the column direction, and a plurality of scan lines 130A are arranged in the row direction. The intersection of each signal line 120A and each scan line 130A corresponds to any one (sub-pixel) of the light-emitting elements 10R, 10G, and 10B. Each signal line 120A is connected to the signal line driving circuit 120, and an image signal is provided from the signal line driving circuit 120 to the source of the write transistor Tr2 via the signal line 120A. Each scan line 130A is connected to the scan line driving circuit 130, and an image signal is provided from the scan line driving circuit 130 to the gate of the write transistor Tr2 sequentially via the scan line 130A.

[0102] Figure 8 The cross-sectional configuration of the light-emitting elements 10R, 10G, and 10B is shown. The light-emitting elements 10R, 10G, and 10B are light-emitting elements in which an organic layer 16, a driving transistor Tr1 including a pixel driving circuit 140, a flat insulating film 12, a lower electrode 14 as an anode, an inter-electrode insulating film 15, and a light-emitting layer 16C described below; and an upper electrode 17 as a cathode; these are stacked in the above order from the side of the first substrate 11. The driving transistor Tr1 is electrically connected to the lower electrode 14 via a connection hole 12A provided on the flat insulating film 12.

[0103] The light emitting elements 10R, 10G and 10B are covered by a protective film 31 and then sealed by bonding the entire surface of the protective film 31 with a resin layer 32 therein to the second substrate 21. The protective film 31 is formed of silicon nitride (SiNx), silicon dioxide, metal oxide, etc. For example, the resin layer 32 is formed of a thermosetting resin or an ultraviolet curing resin. The intermediate layer 30 described above is formed of the protective film 31 and the resin layer 32.

[0104] The flat insulating film 12 flattens the surface of the first substrate 11 on which the pixel driving circuit 140 is formed, and preferably, because the excellent connection hole 12A is provided thereon, the flat insulating film 12 is formed of a material having high pattern accuracy. For example, as a forming material of the flat insulating film 12, an organic material such as polyamide, or an inorganic material such as silicon dioxide (SiO2) may be included.

[0105] The lower electrode 14 also acts as a reflective layer, and it is desirable that the reflectivity is as high as possible for improving the luminous efficiency. In particular, in the case where the lower electrode 14 is used as an anode, it is desirable that the lower electrode 14 is formed by a material having improved hole injection characteristics. As an example of the lower electrode 14, a single metal element or metal element alloy having a thickness (hereinafter referred to as thickness) equal to or greater than 100nm and equal to or less than 1000nm in the stacking direction may be included, such as chromium (Cr), gold (Au), platinum (Pt), nickel (Ni), copper (Cu), tungsten (W) or silver (Ag). A transparent conductive film (such as indium tin oxide (ITO)) may be provided on the surface of the lower electrode 14. A material having a high reflectivity but having a hole injection barrier problem due to the presence of an oxide film or a low work function (such as an aluminum (Al) alloy) on the surface can be used as the lower electrode 14 by providing a suitable hole injection layer.

[0106] The inter-electrode insulating film 15 is for ensuring insulation between the lower electrode 14 and the upper electrode 17 and making the light emitting region into an ideal shape, and is, for example, an ideal shape formed of a photosensitive resin. The inter-electrode insulating film 15 is provided only to surround the lower electrode 14, and the region of the lower electrode 14 exposed from the inter-electrode insulating film 15 is the light emitting region. The organic layer 16 and the upper electrode 17 are also provided on the inter-electrode insulating film 15, but light emission occurs only from the light emitting region.

[0107] The organic layer 16 has a structure in which a hole injection layer 16A, a hole propagation layer 16B, a light-emitting layer 16C, an electron propagation layer 16D, and an electron injection layer 16E are sequentially stacked from the lower electrode 14. In the above, if necessary, a layer other than the light-emitting layer 16C can be provided. According to the respective light-emitting colors of the light-emitting elements 10R, 10G, and 10B, the organic layer 16 may have different structures. The hole injection layer 16A is a buffer layer for improving the hole injection efficiency and preventing leakage. The hole propagation layer 16B is a layer for improving the hole propagation efficiency propagated to the light-emitting layer 16C. The light-emitting layer 16C is a layer that emits light when an electric potential is applied and recombination occurs between electrons and holes. The electron propagation layer 16D is a layer for improving the hole propagation efficiency propagated to the light-emitting layer 16C. The electron injection layer 16E is a layer for improving the electron injection efficiency.

[0108] The thickness of the upper electrode 17 is about 10nm, and is formed of an alloy of aluminum (Al), magnesium (Mg), calcium (Ca) or sodium (Na). Among the above, magnesium and silver alloy (Mg-Ag alloy) is preferred due to high conductivity and low absorption in a thin film state. The ratio of Mg:Ag in the Mg-Ag alloy is not particularly limited, but is ideally within a range of about 20:1 to 1:1 based on the film thickness. In addition, the material of the upper electrode 17 may be an aluminum (Al) and lithium (Li) alloy (Al-Li alloy).

[0109] The upper electrode 17 also has the function of a semi-permeable reflective layer. That is, the light emitting elements 10R, 10G, and 10B include the resonator structure MC1, and the light generated at the light emitting layer 16C resonates by the resonator structure MC1 between the lower electrode 14 and the upper electrode 17. The resonator structure MC1 causes the light generated at the light emitting layer 16C to resonate and be extracted from the semi-permeable reflective surface P2, wherein the interface between the lower electrode 14 and the organic layer 16 is the reflective surface P1, the interface between the intermediate layer 18 and the electron injection layer 16E is the semi-permeable reflective surface P2, and the organic layer 16 is the resonant portion. In this way, if the resonator structure MC1 is included, the light generated at the light emitting layer 16C is disturbed by multiple layers, the half-value width of the continuous light extracted from the semi-permeable reflective surface P2 side is reduced, and then, the peak intensity can be increased. That is, the luminous intensity in the front direction increases, and therefore, the color purity of the luminous light can be improved.

[0110] There is a position (resonance surface) where the extracted luminous intensity becomes maximum between the reflection surface P1 and the semi-permeable reflection surface P2. It is preferable that the optical path L1 between the reflection surface P1 and the semi-permeable reflection surface P2 satisfies a predetermined condition in order to improve the extraction efficiency.

[0111] like Fig. 9 As shown in , the light emitting elements 10R, 10G, and 10B may be elements that do not include the semi-permeable reflection surface P2 and reflect the light generated at the light emitting layer 16C at the reflection surface P1 and interfere between the reflected light and the light generated at the light emitting layer 16C.

[0112] 1.2 Specific Design Examples

[0113] In the display device 1 in the present embodiment, the viewing angle characteristics can be adjusted in the direction in which color separation is not performed by changing the lateral size (width) of the light shielding portion 24. For example, by reducing the width of the light shielding portion 24, the viewing angle characteristics in the vertical direction of the third sub-pixel 2B can be changed to a wide angle, and the viewing angle characteristics of the first sub-pixel 2R and the second sub-pixel 2G can be combined. The viewing angle characteristics in the lateral direction can be adjusted so that the widths of the first color filter 23R of the first sub-pixel 2R and the second color filter 23G of the second sub-pixel 2G and the width of the third color filter 23B of the third sub-pixel 2B become different from each other.

[0114] Fig.10 An example of the design of the pixel 2 in this embodiment is shown. The dimensions of each part are as follows.

[0115] Pitch of one pixel: 9.9μm

[0116] L BM-H :3.0μm

[0117] L BM-V :0.8μm

[0118] L subpix1-H :6.1μm

[0119] L subpix2-H :6.1μm

[0120] L subpix3-H :3.8μm

[0121] L subpix1-V :4.95μm

[0122] L subpix2-V :4.95μm

[0123] L subpix3-V :4.15μm

[0124] For example, the gap D between the light emitting elements 10R, 10G, and 10B and the color filter 23 is G ( Figure 5 ), and the opening width of the sub-pixel is 1:1, preferably, the opening width L of the first sub-pixel 2R in the horizontal direction is subpix1-H The opening width L of the second sub-pixel 2G in the vertical direction subpix2-H are respectively the opening width L of the third sub-pixel 2B in the horizontal direction described below. subpix3-H one to three times.

[0125] 1<L subpix1-H <L subpix3-H <3

[0126] 1<L subpix2-H <L subpix3-H <3

[0127] Due to interference in the unit of the display panel compared to the first sub-pixel 2R and the second sub-pixel 2G emitting light having a wavelength longer than the third color light LB, the third sub-pixel 2B emitting the third color light LB having a shorter wavelength has a higher light extraction efficiency in the low-angle side (less than 20 degrees), and therefore, the viewing angle characteristic is not particularly good. In order to control this characteristic, by reducing the opening width of the third sub-pixel 2B in the lateral direction, the viewing angle characteristics of each of the first sub-pixel 2R, the second sub-pixel 2G, and the third sub-pixel 2B are consistent with each other, and therefore, the color difference is improved.

[0128] If the width L of the light shielding portion 24 in the lateral direction is BM-H is reduced, the viewing angle of the third sub-pixel 2B in the vertical direction increases (the viewing angle in the horizontal direction is not affected). subpix3-V The opening width is less than L subpix1-V and L subpix2-V The opening width needs to be reduced by MB-H To increase the viewing angle characteristics of the third sub-pixel 2B. BM-H The value of is obtained from formula (3), the viewing angle characteristics of each sub-pixel in the vertical direction are consistent with each other, and therefore, the color difference is improved. In actual applications, this value does not have to completely satisfy formula (3), but can be a value that basically satisfies formula (3).

[0129] L BM-H =L subpix3-H ×L subpix3-V / L subpix1-V

[0130] L BM-H =L subpix3-H ×L subpix3-V / L subpix2-V ...Formula (3)

[0131] Fig.11 Shows Fig.10 2 in the horizontal direction in the design example. Fig.12 Shows Fig.10 The viewing angle characteristics of pixel 2 in the vertical direction in the design example in FIG. Fig.11 and Fig.12 , white tristimulus values ​​of X, Y and Z are shown. Stimulus value X corresponds to the first color light LR emitted by the first subpixel 2R. Stimulus value Y corresponds to the second color light LG emitted by the second subpixel 2G. Stimulus value Z corresponds to the third color light LB emitted by the third subpixel 2B.

[0132] like Fig.10 In the design example shown in , by making LBM-V 0.8 μm, as Fig.12 The tristimulus values ​​X, Y, and Z in the viewing angle characteristics shown in FIG. 1 are consistent with each other, and it can be seen that the color difference of the viewing angle characteristics is reduced. In addition, in the viewing angle characteristics in the lateral direction, by making the opening width of the third sub-pixel 2B smaller than that shown in FIG. Fig.11 The opening widths of the first sub-pixel 2R and the second sub-pixel 2G shown in FIG. 1 and FIG. 2 are consistent with each other in tristimulus values ​​X, Y, and Z, and the color difference of the viewing angle characteristic is reduced.

[0133] Next, Fig.13 and Fig.14 The width L of the light shielding portion 24 is shown in FIG. BM-H The viewing angle characteristics of pixel 2 in the vertical direction when changed. Fig.13 Shows Fig.10 The width L of the light shielding portion 24 in the design example shown in BM-H Larger (L BM-H =3.8μm), and Fig.14 Shows Fig.10 The width L of the light shielding portion 24 in the design example shown in BM-H Smaller (L BM-H =0.8μm) viewing angle characteristics.

[0134] exist Fig.13 It can be seen that by making the width L of the light shielding portion 24 BM-H The viewing angle characteristic of the third sub-pixel 2B (stimulus value Z) in the vertical direction becomes smaller. Fig.14 It can be seen that by making the width L of the light shielding portion 24 BM-H The width L of the light shielding portion 24 is changed to be smaller so that the viewing angle characteristic of the third sub-pixel 2B (stimulus value Z) in the vertical direction becomes wider. BM-H By changing the pixel width that limits the viewing angle, the viewing angle characteristics can be adjusted. BM-H As design parameter adjustment, an optimal design value may be set according to the pixel pitch (opening width) or the gap DG value between the light emitting elements 10R, 10G, and 10B and the color filter 23 .

[0135] 1.3 Effect

[0136] As described above, according to the present embodiment, the viewing angle of the third sub-pixel 2B in the first direction (Y direction) is limited by the light shielding portion 24. Therefore, a wide aperture and a wide viewing angle can be achieved at the same time.

[0137] Fig.15 It shows that when no light shielding part (L BM_H and LBM_V =0), as the viewing angle characteristic of pixel 2 in the vertical direction, Fig.10 A comparative example of the design example shown in . In the structure of the comparative example, since there is no shading portion 24, the opening width of the third sub-pixel 2B in the vertical direction increases. For this reason, in the viewing angle characteristics in the vertical direction, when white is displayed, in the image seen at an angle with respect to the display surface, the stimulation value Z of the third sub-pixel 2B increases relatively, and blue color difference occurs. On the other hand, in the array structure of the pixel 2 of the present embodiment, since the shading portion 24 is provided in the third sub-pixel 2B, the viewing angle characteristics (stimulation value Z) of the third sub-pixel 2B can be controlled, and the color difference can be reduced. In addition, in the viewing angle characteristics in the lateral direction, by making the opening width of the third sub-pixel 2B with a short wavelength in the lateral direction smaller than the opening widths of other sub-pixels, the viewing angle characteristics of each pixel in the lateral direction can be consistent with each other, and then, the color difference can be improved. In this way, a wide opening (long life) and a wide viewing angle can be achieved while maintaining excellent visibility.

[0138] The effects described herein are merely examples and are not limited thereto, and other effects may be possible. It will be described below that the above-described situation is also applicable to other embodiments and modified examples.

[0139] 1.4 Variations

[0140] 1.4.1 First Modification

[0141] Fig.16 FIG. 2 shows an example of the array structure of the color filter portion of the pixel 2 in the first modification example. Fig.16 As shown in FIG. 1 , the planar shape of the light shielding portion 24 may be substantially elliptical.

[0142] 1.4.2 Second Modification

[0143] Fig.17 FIG. 2 shows an example of an array structure of a color filter portion of a pixel 2 in a second variation. Fig.17 As shown in FIG. 1 , the planar shape of the light shielding portion 24 may be substantially circular.

[0144] The planar shape of the light shielding portion 24 is not limited to a rectangle, an ellipse, or a circle, but any other planar shape may be adopted.

[0145] 1.4.3 Third Modification

[0146] Fig.18 An example of an array structure of a color filter portion of a pixel 2 in a third modification example is shown. Fig.19 An example of the structure of the color filter portion of one pixel is shown. Fig.18 and Fig.19As shown, the width L of the first light shielding portion 24-1 of the light shielding portion 24 in the lateral direction is BM-H1 and the width L of the second light shielding portion 24 - 2 in the lateral direction BM-H2 Can be different from each other.

[0147] 1.4.4 Fourth Modification

[0148] Fig. 20 FIG. 4 shows an example of the array structure of the color filter portion of the pixel 2 in the fourth modification. Fig. 20 As shown in Figure 5 According to the cross-sectional structure shown in FIG. 1 , the resin layer 32 may be omitted from the intermediate layer 30 .

[0149] 1.4.5 Fifth variant

[0150] Fig.21 FIG. 4 shows an example of the array structure of the color filter portion of the pixel 2 in the fifth modification example. Fig.21 As shown in Figure 5 In the cross-sectional structure shown in FIG, the positions of the light shielding portions 24 arranged in the thickness direction (Z direction) may be different. Figure 5 In the cross-sectional structure shown in FIG. 1 , the light shielding portion 24 is provided on the side opposite to the intermediate layer 30. Fig.21 As shown in FIG. 8 , the light shielding portion 24 may be provided on a side surface close to the intermediate layer 30 .

[0151] 2. Second Embodiment (Example in which the light shielding portion 24 is arranged in a position other than the central portion in one pixel)

[0152] 2.1 Construction

[0153] In this embodiment, the array structure of the pixels 2, especially the positions where the light shielding portions 24 are arranged, is different from the array structure of the display device 1 in the first embodiment described above.

[0154] In this embodiment, the configuration and function related to the portion other than the array structure of the pixel 2, in particular, the position of the light shielding portion 24 can be the same as that in the first embodiment. In addition, this configuration can be adopted in a modification example in which this embodiment is combined with the first embodiment.

[0155] Fig. 22 An example of the array structure of the color filter portion of the pixel 2 in this embodiment is shown. Fig.23 An example of the configuration of a color filter portion of one pixel in this embodiment is shown. Fig.24 An example of an array structure of light-emitting elements of the pixel 2 is shown.

[0156] In the array structure of the pixel 2 of the present embodiment, the second light shielding portion 24-2 of the light shielding portion 24 is arranged at a position different from the central portion of the third sub-pixel 2B in the first direction. For this reason, in one pixel, the sizes (opening sizes) of the first pixel area 2B-1 and the second pixel area 2B-2 in the third sub-pixel 2B are different from each other, and the second light shielding portion 24-2 is the boundary. In this way, the viewing angle characteristics of the first pixel area 2B-1 and the viewing angle characteristics of the second pixel area 2B-2 are different from each other. Fig. 22 In, L subpix3-V1 L represents the opening width of the first pixel region 2B-1 in the vertical direction. subpix3-V2 represents the opening width of the second pixel region 2B-2 in the vertical direction.

[0157] In this embodiment, it is preferred that the planar shapes of the first light emitting element 10R, the second light emitting element 10G, and the third light emitting element 10B are as follows: Fig.24 The shape of the position where the color filter 23 and the light shielding portion 24 are arranged as shown in . Preferably, in one pixel, the third light emitting element 10B is separated at a portion corresponding to the position where the second light shielding portion 24-2 is provided. In the second direction, the width of the third light emitting element 10B and the width of the light shielding portion 24 may be different from each other. The first light emitting element 10R, the second light emitting element 10G, and the third light emitting element 10B may include a light emitting layer 16C (light emitting surface) and a lower electrode 14 (reflection surface), respectively.

[0158] 2.2 Function and Effect

[0159] Fig.25 FIG. 2 shows the viewing angle characteristics of the third sub-pixel 2B in the vertical direction in this embodiment. Fig.25 In the left diagram of FIG. 1 , the viewing angle characteristics of each of the first pixel region 2B-1 and the second pixel region 2B-2 in the third sub-pixel 2B are separately shown. Fig.25 The left diagram of shows the viewing angle characteristics of the entire third sub-pixel 2B.

[0160] The viewing angle characteristic can be adjusted by shifting the position of the light shielding portion 24 from the central part of a pixel and changing the opening width of the third sub-pixel 2B in the vertical direction in one pixel. Since the viewing angle characteristic of the entire third sub-pixel 2B is the sum of the viewing angle characteristic of the vertically wide pixel (the second pixel area 2B-2) and the viewing angle characteristic of the narrow pixel (the first pixel area 2B-1), the inflection point can be set at a position such as Fig.25 The entire viewing angle characteristics shown in the right diagram in FIG, and the viewing angle characteristics can be finely adjusted.

[0161] 3. Third Embodiment (Example of Four-Color Display Device 1A)

[0162] Fig.26 1 is a diagram showing an example of a planar configuration of a display device 1A in the present embodiment. The display device 1A in the present embodiment has a configuration of a plurality of pixels 2A of four-color sub-pixels, wherein a fourth sub-pixel 2W is added to the first sub-pixel 2R, the second sub-pixel 2G, and the third sub-pixel 2B, and the display device 1A is arranged in a matrix shape in the first direction and the second direction.

[0163] In the present embodiment, the configuration other than the portion related to the array structure, action, and effect of the pixel 2A may be similar to that in the first embodiment.

[0164] In the display device 1A in this embodiment, the fourth sub-pixel 2W is arranged adjacent to the first sub-pixel 2R in the second direction (X direction). The third sub-pixel 2B is arranged adjacent to the second sub-pixel 2G in the second direction (X direction), and is arranged adjacent to the fourth sub-pixel 2W in the first direction (Y direction).

[0165] The sub-pixels are not limited to the example shown in the arrangement, for example, the fourth sub-pixel 2W and the third sub-pixel 2B may be arranged in opposite directions. That is, the third sub-pixel 2B may be arranged adjacent to the first sub-pixel 2R in the second direction (X direction), and the fourth sub-pixel 2W may be arranged adjacent to the second sub-pixel 2G in the second direction (X direction).

[0166] In the following, reference is made to Figure 27 to Figure 29 as well as Figure 30 to Figure 32 A first example and a second example of the array structure of the pixel 2A will be described. Each pixel 2A includes a light-emitting element that emits color light and a color filter 23A that propagates the color light. The fourth sub-pixel 2W includes a fourth light-emitting element that emits a fourth color light and a fourth color filter 23W that propagates the fourth color light from the fourth light-emitting element. For example, the fourth light-emitting element of the fourth sub-pixel 2W is an element that emits white light.

[0167] 3.1 First Example of Array Structure of Pixel 2A

[0168] Fig. 27 A first example of the array structure of the color filter portion of the pixel 2A is shown. Fig.28 Shows Fig. 27 An example of the configuration of a color filter portion of one pixel in the first example described in . Fig.29 Shows Fig. 27 The first example described in FIG. 1 is an example of an array structure in which the light shielding portion 24A is omitted and only the color filter 23A is provided.

[0169] The light shielding portion 24A is arranged to surround the fourth subpixel 2W to include the boundary portion of the first subpixel 2R and the third subpixel 2B. The light shielding portion 24A limits the viewing angle of the third subpixel 2B in the first direction and limits the viewing angle of the fourth subpixel 2W in the first and second directions.

[0170] The light shielding portion 24A is formed by a first light shielding portion 24-1, a second light shielding portion 24-2, a third light shielding portion 24-3, and a fourth light shielding portion 24-4. The first light shielding portion 24-1 is provided on a boundary portion of pixels adjacent to each other in the first direction. The second light shielding portion 24-2 is provided on a boundary portion of a third sub-pixel 2B and a fourth sub-pixel 2W in one pixel. The third light shielding portion 24-3 is provided on a boundary portion of pixels adjacent to each other in the second direction. The fourth light shielding portion 24-4 is provided on a boundary portion of a first sub-pixel 2R and a fourth sub-pixel 2W in one pixel.

[0171] exist Fig. 27 In, L subpix4-H represents the opening width of the fourth sub-pixel 2W in the horizontal direction and L subpix4-V represents the opening width of the fourth sub-pixel 2W in the vertical direction.

[0172] like Fig.29 As shown in , the first color filter 23R and the second color filter 23G have substantially the same size. In addition, the third sub-pixel 2B and the fourth color filter 23W have substantially the same size. It is preferred that the width of the third color filter 23B and the fourth color filter 23W in the horizontal direction is smaller than the width of the first color filter 23R and the second color filter 23G in the horizontal direction.

[0173] 3.2 Second Example of Array Structure of Pixel 2A

[0174] Fig.30 A second example of the array structure of the color filter portion of the pixel 2A is shown. Fig.31 Shows Fig.30 An example of the structure of the color filter portion of one pixel in the second example described in . Fig.32 Shows Fig.30 The second example described in FIG. 1 is an example of an array structure in which the light shielding portion 24A is omitted and only the color filter 23A is provided.

[0175] Similar to the first example described above, in the second example, the light shielding portion 24A is also arranged to surround the fourth sub-pixel 2W to include the boundary portion of the first sub-pixel 2R and the third sub-pixel 2B. Similar to the first example, the light shielding portion 24A is formed by the first light shielding portion 24-1, the second light shielding portion 24-2, the third light shielding portion 24-3 and the fourth light shielding portion 24-4.

[0176] exist Fig.30 In, Lsubpix4-H represents the opening width of the fourth sub-pixel 2W in the horizontal direction, and L subpix4-V represents the opening width of the fourth sub-pixel 2W in the vertical direction.

[0177] In the second example, if Fig.32 As shown in , the sizes of the first color filter 23R, the second color filter 23G, the third color filter 23B and the fourth color filter 23W are different from each other. It is preferred that the width of the third color filter 23B and the fourth color filter 23W in the lateral direction is smaller than the width of the first color filter 23R and the second color filter 23G in the lateral direction.

[0178] 4. Example of application to display device of electronic equipment

[0179] The display devices 1 and 1A in the respective embodiments described above may be mounted on electronic equipment in various fields that perform image (or video) display.

[0180] 4.1 First application example

[0181] Fig.33 1 is a diagram showing an appearance diagram of a display device 1 or 1A applied to a head-mounted display. For example, the head-mounted display has an ear hook portion 72 for mounting on the user's head on both sides of a glass-shaped display portion 71; and a display portion 71 configured from the display device 1 or 1A in each embodiment described above. By applying the display device 1 or 1A according to the present disclosure to the display portion 71 of the head-mounted display, a wide opening and a wide viewing angle can be achieved, and therefore, it can contribute to improving the marketability of the head-mounted display.

[0182] 4.2 Second application example

[0183] Fig.34 and Fig.35 The figure shows the appearance of the display device 1 or 1A applied to an imaging device (lens exchange type and single lens reflex type digital camera). Fig.34 As shown in FIG. 1 , the imaging device has an interchangeable imaging lens unit (interchangeable lens) 212 on the right front side of a camera main body portion (camera body) 211, and has a grip portion 213 on the left front side of the camera body for the user to grip. Fig.35 As shown in FIG. 2 , the display 214 is provided substantially at the center of the rear surface of the camera body 211. Fig.35As shown in , a viewfinder (eyepiece window) 215 is provided on the upper part of the display 214. The photographer can determine the picture by visually recognizing the optical image of the target induced from the imaging lens unit 212 by observing the viewfinder 215. The viewfinder 215 is constituted by the display device 1 or 1A in each embodiment described above. By applying the display device 1 or 1A according to the present disclosure to the viewfinder of the imaging device, a wide opening and a wide viewing angle can be achieved, and therefore, it can contribute to improving the marketability of the head-mounted display.

[0184] In particular, the technology according to the present disclosure is very useful for electronic devices in the application examples described above. However, the technology according to the present disclosure can be applied to various electronic devices and is not limited to the application examples described above.

[0185] 5. Other Implementation Methods

[0186] The technology according to the present disclosure is not limited to the description in each embodiment, and various modifications can be made.

[0187] For example, in each of the above-described embodiments, the array structure of pixels is described in which the first direction is the vertical direction (Y direction) in the display plane, and the second direction is the lateral direction (X direction) in the display plane. However, the array structure of pixels may be such that the first direction is the lateral direction (X direction) and the second direction is the vertical direction (Y direction).

[0188] For example, in Figure 1 and Figure 2 The array structure of the pixels 2 of the display device 1 in the first embodiment shown in FIG. Fig.36 and Fig.37 The array structure of the display device 1B shown in FIG. Fig.36 and Fig.37 In the display device 1B shown in , the array structure can be a structure in which the first sub-pixel 2R and the second sub-pixel 2G are arranged to be adjacent to each other in the horizontal direction (X direction), and the third sub-pixel 2B is arranged to be adjacent to both the first sub-pixel 2R and the second sub-pixel 2G in the vertical direction (Y direction).

[0189] Furthermore, the present technology can have the following configurations.

[0190] (1) A display device comprising: a plurality of pixels arranged in a first direction and a second direction, wherein each pixel comprises: a first sub-pixel; a second sub-pixel arranged to be adjacent to the first sub-pixel in the first direction; a third sub-pixel arranged to be adjacent to at least one of the first sub-pixel and the second sub-pixel in the second direction; and a light shielding portion arranged corresponding to a position on which the third sub-pixel is arranged so as to limit a viewing angle of the third sub-pixel in the first direction.

[0191] (2) A display device according to the above (1), wherein the third sub-pixel is arranged to be adjacent to both the first sub-pixel and the second sub-pixel in the second direction, and the shading portion includes: a first portion, which is arranged on a boundary portion of adjacent pixels in the first direction; and a second portion, which is arranged in the third sub-pixel in a pixel.

[0192] (3) The display device according to (2) above, wherein a width of the light shielding portion in the second direction is smaller than an opening width of the third sub-pixel.

[0193] (4) A display device according to (2) or (3) above, wherein the first sub-pixel includes a first color filter that transmits a first color light, the second sub-pixel includes a second color filter that transmits a second color light, and the third sub-pixel includes a third color filter that transmits a third color light, and color separation is performed on the first sub-pixel and the second sub-pixel in a first direction and the third sub-pixel in a second direction by the first color filter and the second color filter, and color separation is performed on the first sub-pixel and the second sub-pixel in the second direction by the third color filter.

[0194] (5) The display device according to any one of (2) to (4) above, wherein sizes of the first portion and the second portion are different from each other.

[0195] (6) The display device according to any one of (2) to (5) above, wherein the second portion is provided on a central portion of the third sub-pixel in the first direction.

[0196] (7) The display device according to any one of (2) to (5) above, wherein the second portion is provided at a position different from a center portion of the third sub-pixel in the first direction.

[0197] (8) A display device according to the above (7), wherein, in one pixel, a first pixel region and a second pixel region are formed in a third sub-pixel, wherein the second portion serves as a boundary, and a viewing angle characteristic of the first pixel region and a viewing angle characteristic of the second pixel region are different from each other.

[0198] (9) The display device according to any one of (2) to (8) above, wherein the light shielding portion has a rectangular, elliptical or circular shape.

[0199] (10) A display device according to any one of (2) to (9) above, wherein the first subpixel includes a first light-emitting element that emits a first color of light, the second subpixel includes a second light-emitting element that emits a second color of light, the third subpixel includes a third light-emitting element that emits a third color of light, and, in one pixel, the third light-emitting element is separated at a portion corresponding to a position on which the second portion is set.

[0200] (11) The display device according to (10) above, wherein in the second direction, a width of the third light emitting element and a width of the light shielding portion are different from each other.

[0201] (12) A display device according to any one of the above (1) to (11), wherein a first color light is emitted from a first sub-pixel, a second color light is emitted from a second sub-pixel, a third color light having a wavelength shorter than a wavelength of the first color light and a wavelength of the second color light is emitted from a third sub-pixel, and, in the second direction, an opening width of the third sub-pixel is smaller than an opening width of the first sub-pixel and an opening width of the second sub-pixel.

[0202] (13) A display device according to the above (1), wherein each pixel further includes a fourth sub-pixel arranged adjacent to the first sub-pixel in the second direction, the third sub-pixel arranged adjacent to the second sub-pixel in the second direction and arranged adjacent to the fourth sub-pixel in the first direction, and the shading portion is arranged to surround the fourth color filter to include a boundary portion of the first sub-pixel and the third sub-pixel.

[0203] (14) The display device according to (13) above, wherein the light shielding portion limits a viewing angle of the third sub-pixel in the first direction and limits a viewing angle of the fourth sub-pixel in the first direction and the second direction.

[0204] (15) An electronic device includes: a display device having a plurality of pixels arranged in a first direction and a second direction, wherein each pixel includes: a first sub-pixel; a second sub-pixel arranged to be adjacent to the first sub-pixel in the first direction; a third sub-pixel arranged to be adjacent to at least one of the first sub-pixel and the second sub-pixel in the second direction; and a shading portion arranged corresponding to a position on which the third sub-pixel is arranged so as to limit a viewing angle of the third sub-pixel in the first direction.

[0205] It should be understood by those skilled in the art that, as long as they are within the scope of the attached technical solutions or their equivalents, various variations, combinations, sub-combinations and modifications can be made according to design requirements and other factors.

Claims

1. A display device, comprising: A white sub-pixel including a first light emitting element; A red sub-pixel, comprising a red color filter and a second light-emitting element, wherein the red sub-pixel is adjacent to the white sub-pixel; A blue sub-pixel, comprising a blue color filter and a third light-emitting element, wherein the blue sub-pixel is adjacent to the white sub-pixel; A green sub-pixel, comprising a green color filter and a fourth light-emitting element, and the green sub-pixel is adjacent to the blue sub-pixel; as well as a light shielding portion arranged on at least a light extraction side of the white sub-pixel, The light shielding portion includes a first portion arranged between the white sub-pixel and the red sub-pixel, and a second portion arranged between the white sub-pixel and the blue sub-pixel. The second portion has a second part protruding from the white sub-pixel toward the blue sub-pixel, and The light-emitting portion of the second light-emitting element is larger than the light-emitting portion of the third light-emitting element, wherein the display device further includes another red sub-pixel adjacent to the white sub-pixel on a third side, wherein the third side protrudes from the white sub-pixel toward the other red sub-pixel.

2. The display device according to claim 1, wherein: The width of the red sub-pixel is different from the width of the white sub-pixel, and the width of the blue sub-pixel is different from the width of the green sub-pixel.

3. The display device according to claim 2, wherein: The width of the red sub-pixel is greater than the width of the white sub-pixel, and the width of the blue sub-pixel is greater than the width of the green sub-pixel.

4. The display device according to claim 2, wherein: The white sub-pixel, the red sub-pixel, the blue sub-pixel, and the green sub-pixel have the same height.

5. The display device according to claim 2, wherein: The white sub-pixel has the same width as the blue sub-pixel, and the red sub-pixel has the same width as the green sub-pixel.

6. The display device according to claim 1, wherein: The red sub-pixel is adjacent to the white sub-pixel on a first side of the white sub-pixel, and the blue sub-pixel is adjacent to the white sub-pixel on a second side of the white sub-pixel, the second side being different from the first side.

7. The display device according to claim 6, wherein: The first side is perpendicular to the second side.

8. The display device according to claim 6, wherein: The light shielding portion further includes a third portion disposed on a third side of the white sub-pixel, the third side being different from the first side and the second side, and having a third portion protruding in a direction toward the third side.

Images