Display device

Abstract

The invention relates to a display device. According to one aspect of an embodiment, a display device includes: a first region and a second region each including a plurality of sub-pixels; and a partition wall including a conductive lower portion and an upper portion having an end portion protruding from a side surface of the lower portion, the partition wall surrounding each of the plurality of sub-pixels. Each of the plurality of sub-pixels includes: a lower electrode; an organic layer that covers the lower electrode and emits light in response to application of a voltage; and an upper electrode that covers the organic layer and is in contact with the lower portion of the partition wall. The second region has a plurality of transmissive regions that are surrounded by the partition wall and do not overlap the lower electrode. The resolution of the second region is lower than the resolution of the first region.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the priority based on Japanese Patent Application No. 2023-104290 for which it applied on June 26, 2023, and cites all the contents described in the Japanese Patent Application. Technical Field

[0003] An embodiment of the present invention relates to a display device. Background Art

[0004] In recent years, display devices using organic light-emitting diodes (OLEDs) as display elements have been put into practical use. The display element includes a lower electrode, an organic layer covering the lower electrode, and an upper electrode covering the organic layer. A common voltage is applied to the upper electrode of each display element through wiring arranged in the display area.

[0005] In addition, sometimes at least a portion of a display region where display elements are arranged is required to be light-transmissive. However, when the lower electrode and wiring are formed of a light-shielding material such as metal, the light-transmissiveness of the display device is greatly reduced. Summary of the invention

[0006] In general, according to an embodiment, a display device comprises: a first region and a second region each including a plurality of sub-pixels; and a partition wall including a conductive lower portion and an upper portion having an end protruding from a side surface of the lower portion and surrounding each of the plurality of sub-pixels. Each of the plurality of sub-pixels comprises: a lower electrode; an organic layer covering the lower electrode and emitting light in response to application of a voltage; and an upper electrode covering the organic layer and contacting the lower portion of the partition wall. The second region comprises a plurality of transmissive regions surrounded by the partition wall and not overlapping the lower electrode. In addition, the resolution of the second region is lower than that of the first region.

[0007] According to another aspect of the embodiment, the plurality of sub-pixels include: a first sub-pixel disposed in the first region; and a second sub-pixel disposed in the second region and displaying the same color as the first sub-pixel. In addition, the first sub-pixel and the second sub-pixel have different shapes or sizes.

[0008] According to another aspect of the embodiment, the display device comprises: a lower electrode; a first organic layer, which covers the lower electrode and emits light in response to the application of a voltage; a second organic layer, which is separated from the first organic layer and covers the lower electrode, and emits light in response to the application of a voltage; a partition wall comprising a conductive lower portion and an upper portion having an end protruding from a side surface of the lower portion, at least a portion of the partition wall being located between the first organic layer and the second organic layer; a first upper electrode, which covers the first organic layer and is in contact with the lower portion; and a second upper electrode, which covers the second organic layer and is in contact with the lower portion.

[0009] According to the embodiment, a display device having excellent light transmittance can be provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a diagram showing a configuration example of a display device according to the first embodiment.

[0011] Figure 2 This is a schematic plan view showing an example of the layout of sub-pixels in the first region according to the first embodiment.

[0012] Figure 3 It is along Figure 2 Schematic cross-sectional view of the display device taken along line III-III.

[0013] Figure 4 It is a schematic plan view of the second region of the first embodiment.

[0014] Figure 5 It is along Figure 4 Schematic cross-sectional view of the display device along line VV in FIG.

[0015] Figure 6 This is a schematic cross-sectional view showing another example that can be applied to the transmission region included in the second region.

[0016] Figure 7 This is a schematic cross-sectional view showing still another example that can be applied to the transmission region.

[0017] Figure 8 This is a schematic cross-sectional view showing still another example that can be applied to the transmission region.

[0018] Fig. 9 This is a schematic cross-sectional view showing still another example that can be applied to the transmission region.

[0019] Fig.10 It is a schematic plan view showing a part of the second region of the first embodiment in an enlarged manner.

[0020] Fig.11 It is a schematic plan view of the second region of the second embodiment.

[0021] Fig.12 It is a schematic plan view of the second region of the third embodiment.

[0022] Fig.13 This is a schematic plan view of two sub-pixels included in the second region of the third embodiment.

[0023] Fig.14 It is along Fig.13 Schematic cross-sectional view of the display device taken along line XIV-XIV in FIG.

[0024] Fig.15 It is a schematic plan view of the second region of the fourth embodiment.

[0025] Fig.16 It is a schematic top view of the second region of the fifth embodiment.

[0026] Fig.17 It is a schematic top view of the second region of the sixth embodiment. DETAILED DESCRIPTION

[0027] Several embodiments will be described with reference to the drawings.

[0028] The disclosed content is only an example, and for those skilled in the art, the content that can be easily thought of with respect to appropriate changes that maintain the gist of the invention is of course included in the scope of the present invention. In addition, in order to make the description clearer, the drawings sometimes schematically show the width, thickness, shape, etc. of each part compared to the actual method, but it is only an example and does not limit the interpretation of the present invention. In addition, in this specification and each figure, the same reference numerals are sometimes used to mark the components that perform the same or similar functions as the components described above in relation to the figures that have appeared, and repeated detailed descriptions are appropriately omitted.

[0029] It should be noted that, in the drawings, as needed, for easy understanding, mutually orthogonal X-axis, Y-axis and Z-axis are recorded. The direction along the X-axis is called the X-direction, the direction along the Y-axis is called the Y-direction, and the direction along the Z-axis is called the Z-direction. The Z-direction is the normal direction of the plane including the X-direction and the Y-direction. In addition, observing various elements parallel to the Z-direction is called a top view.

[0030] The display device of each embodiment is an organic electroluminescent display device having an organic light emitting diode (OLED) as a display element, and can be mounted on various electronic devices such as televisions, personal computers, vehicle-mounted equipment, tablet terminals, smartphones, mobile phone terminals, and wearable terminals.

[0031] [First embodiment]

[0032] Figure 11 is a diagram showing a configuration example of a display device DSP according to the first embodiment. The display device DSP includes an insulating substrate 10. The substrate 10 includes a display area DA for displaying an image and a peripheral area SA surrounding the display area DA. The substrate 10 may be glass or a flexible resin film.

[0033] In the present embodiment, the shape of the substrate 10 when viewed from above is a rectangle. However, the shape of the substrate 10 when viewed from above is not limited to a rectangle, and may be other shapes such as a square, a circle, or an ellipse.

[0034] The display area DA includes a plurality of pixels PX arranged in a matrix in the X direction and the Y direction. The pixel PX includes a plurality of sub-pixels SP that display different colors. In the present embodiment, it is assumed that the pixel PX includes a blue sub-pixel SP1, a green sub-pixel SP2, and a red sub-pixel SP3. However, the pixel PX may also include a sub-pixel SP of another color such as white together with the sub-pixels SP1, SP2, and SP3, or instead of any of the sub-pixels SP1, SP2, and SP3.

[0035] The sub-pixel SP includes a pixel circuit 1 and a display element DE driven by the pixel circuit 1. The pixel circuit 1 includes a pixel switch 2, a driving transistor 3, and a capacitor 4. The pixel switch 2 and the driving transistor 3 are switching elements composed of, for example, thin film transistors.

[0036] In the display area DA, a plurality of scanning lines G for supplying scanning signals to the pixel circuits 1 of the sub-pixels SP, a plurality of signal lines S for supplying image signals to the pixel circuits 1 of the sub-pixels SP, and a plurality of power supply lines PL are arranged. Figure 1 In the example of FIG. 5 , the scanning lines G and the power lines PL extend in the X direction, and the signal lines S extend in the Y direction.

[0037] The gate electrode of the pixel switch 2 is connected to the scanning line G. One of the source electrode and the drain electrode of the pixel switch 2 is connected to the signal line S, and the other is connected to the gate electrode of the driving transistor 3 and the capacitor 4. In the driving transistor 3, one of the source electrode and the drain electrode is connected to the power line PL and the capacitor 4, and the other is connected to the display element DE.

[0038] It should be noted that the configuration of the pixel circuit 1 is not limited to the illustrated example. For example, the pixel circuit 1 may include more thin film transistors and capacitors.

[0039] The display area DA includes a first area A1 and a second area A2 having a higher light transmittance than the first area A1. A camera CR, for example, is disposed on the back side of the second area A2. The camera CR can photograph an object on the display surface side through the second area A2. It should be noted that other types of light receiving elements such as an illuminance sensor for detecting external light may be disposed instead of the camera CR. In addition, the display area DA may also include a plurality of second areas A2 that are opposite to the camera CR and the illuminance sensor.

[0040] For example, the second area A2 is smaller than the first area A1. Figure 1 In the example, the second area A2 is located near the end of the display area DA and is surrounded by the first area A1. However, the configuration position of the second area A2 is not limited to this example. The second area A2 does not necessarily need to be surrounded by the first area A1 all around, and can also be configured so that one or two sides face the surrounding area SA. The second area A2 is, for example, rectangular, but can also be other shapes such as a circle.

[0041] Figure 2 FIG. 1 is a schematic plan view showing an example of the layout of sub-pixels SP1, SP2, and SP3 in the first area A1. Figure 2 In the example of FIG. 1 , the sub-pixels SP2 and SP3 are arranged in the X direction with the sub-pixel SP1. In addition, the sub-pixel SP2 and the sub-pixel SP3 are arranged in the Y direction.

[0042] When the sub-pixels SP1, SP2, and SP3 are arranged in this way, columns in which the sub-pixels SP2 and SP3 are alternately arranged in the Y direction and columns in which a plurality of sub-pixels SP1 are repeatedly arranged in the Y direction are formed in the display area DA. These columns are alternately arranged in the X direction. It should be noted that the layout of the sub-pixels SP1, SP2, and SP3 is not limited to Figure 2 Example.

[0043] The rib 5 is disposed in the display area DA. The rib 5 has pixel openings AP1, AP2, and AP3 in the sub-pixels SP1, SP2, and SP3, respectively. Figure 2 In the example, the pixel opening AP1 is larger than the pixel opening AP2, and the pixel opening AP2 is larger than the pixel opening AP3. That is, among the sub-pixels SP1, SP2, and SP3, the sub-pixel SP1 has the largest aperture ratio, and the sub-pixel SP3 has the smallest aperture ratio.

[0044] The sub-pixel SP1 includes a lower electrode LE1, an upper electrode UE1, and an organic layer OR1 respectively overlapping with the pixel opening AP1. The sub-pixel SP2 includes a lower electrode LE2, an upper electrode UE2, and an organic layer OR2 respectively overlapping with the pixel opening AP2. The sub-pixel SP3 includes a lower electrode LE3, an upper electrode UE3, and an organic layer OR3 respectively overlapping with the pixel opening AP3.

[0045] The lower electrode LE1, the upper electrode UE1, and the portion of the organic layer OR1 overlapping with the pixel opening AP1 constitute the display element DE1 of the sub-pixel SP1. The lower electrode LE2, the upper electrode UE2, and the portion of the organic layer OR2 overlapping with the pixel opening AP2 constitute the display element DE2 of the sub-pixel SP2. The lower electrode LE3, the upper electrode UE3, and the portion of the organic layer OR3 overlapping with the pixel opening AP3 constitute the display element DE3 of the sub-pixel SP3. The display elements DE1, DE2, and DE3 may further include a cover layer described later. The ribs 5 surround these display elements DE1, DE2, and DE3, respectively.

[0046] A conductive partition wall 6 is disposed on the rib 5. The partition wall 6 overlaps the rib 5 as a whole and has the same planar shape as the rib 5. That is, the partition wall 6 has openings in the sub-pixels SP1, SP2, and SP3, respectively. From another point of view, the rib 5 and the partition wall 6 are lattice-shaped when viewed from above, and surround the sub-pixels SP1, SP2, and SP3, respectively. The partition wall 6 has a function as a wiring for supplying a common voltage to the upper electrodes UE1, UE2, and UE3.

[0047] Figure 3 It is along Figure 2 A schematic cross-sectional view of the display device DSP along the line III-III in FIG. A circuit layer 11 is arranged on the substrate 10. The circuit layer 11 includes Figure 1 The circuit layer 11 is covered with an organic insulating layer 12. The organic insulating layer 12 functions as a planarizing film that planarizes the unevenness generated in the circuit layer 11.

[0048] The lower electrodes LE1, LE2, and LE3 are disposed on the organic insulating layer 12. The ribs 5 are disposed on the organic insulating layer 12 and the lower electrodes LE1, LE2, and LE3. The ends of the lower electrodes LE1, LE2, and LE3 are covered by the ribs 5. Figure 3 Although not shown in the cross section, the lower electrodes LE1 , LE2 , and LE3 are connected to the pixel circuit 1 of the circuit layer 11 through contact holes provided in the organic insulating layer 12 .

[0049] The partition wall 6 includes a conductive lower portion 61 disposed on the rib 5 and an upper portion 62 disposed on the lower portion 61. The upper portion 62 has a greater width than the lower portion 61. Thus, both ends of the upper portion 62 protrude from the side surfaces of the lower portion 61. Such a shape of the partition wall 6 is called a cantilever shape.

[0050] exist Figure 3In the example of the present invention, the lower portion 61 has a bottom layer 63 disposed on the rib 5 and a shaft layer 64 disposed on the bottom layer 63. For example, the bottom layer 63 is formed thinner than the shaft layer 64. Figure 3 In the example, both ends of the bottom layer 63 protrude from the side surfaces of the shaft layer 64 .

[0051] The organic layer OR1 covers the lower electrode LE1 through the pixel opening AP1. The upper electrode UE1 covers the organic layer OR1 and is opposite to the lower electrode LE1. The organic layer OR2 covers the lower electrode LE2 through the pixel opening AP2. The upper electrode UE2 covers the organic layer OR2 and is opposite to the lower electrode LE2. The organic layer OR3 covers the lower electrode LE3 through the pixel opening AP3. The upper electrode UE3 covers the organic layer OR3 and is opposite to the lower electrode LE3. The upper electrodes UE1, UE2, UE3 are in contact with the side surface of the lower portion 61 of the partition wall 6.

[0052] The display element DE1 includes a cap layer CP1 disposed on the upper electrode UE1. The display element DE2 includes a cap layer CP2 disposed on the upper electrode UE2. The display element DE3 includes a cap layer CP3 disposed on the upper electrode UE3. The cap layers CP1, CP2, and CP3 respectively function as optical adjustment layers to improve the extraction efficiency of light emitted from the organic layers OR1, OR2, and OR3.

[0053] In the following description, the multilayer body including the organic layer OR1, the upper electrode UE1 and the cover layer CP1 is referred to as the stacked film FL1, the multilayer body including the organic layer OR2, the upper electrode UE2 and the cover layer CP2 is referred to as the stacked film FL2, and the multilayer body including the organic layer OR3, the upper electrode UE3 and the cover layer CP3 is referred to as the stacked film FL3.

[0054] A portion of the laminate film FL1 is located above the upper portion 62. This portion is separated from the portion of the laminate film FL1 located below the partition wall 6 (the portion constituting the display element DE1). Similarly, a portion of the laminate film FL2 is located above the upper portion 62, and this portion is separated from the portion of the laminate film FL2 located below the partition wall 6 (the portion constituting the display element DE2). In addition, a portion of the laminate film FL3 is located above the upper portion 62, and this portion is separated from the portion of the laminate film FL3 located below the partition wall 6 (the portion constituting the display element DE3).

[0055] Seal layers SE1, SE2, and SE3 are respectively arranged in sub-pixels SP1, SP2, and SP3. Seal layer SE1 continuously covers cap layer CP1 and partition walls 6 around sub-pixel SP1. Seal layer SE2 continuously covers cap layer CP2 and partition walls 6 around sub-pixel SP2. Seal layer SE3 continuously covers cap layer CP3 and partition walls 6 around sub-pixel SP3.

[0056] exist Figure 3 In the example, the laminated film FL1 and the sealing layer SE1 on the partition wall 6 between the sub-pixels SP1 and SP2 are separated from the laminated film FL2 and the sealing layer SE2 on the partition wall 6. In addition, the laminated film FL1 and the sealing layer SE1 on the partition wall 6 between the sub-pixels SP1 and SP3 are separated from the laminated film FL3 and the sealing layer SE3 on the partition wall 6.

[0057] The sealing layers SE1, SE2, and SE3 are covered by the resin layer 13. The resin layer 13 is covered by the sealing layer 14. The sealing layer 14 is covered by the resin layer 15. The resin layers 13, 15, and the sealing layer 14 are continuously provided at least in the entire display area DA, and a part of them also reaches the peripheral area SA.

[0058] A cover member such as a polarizing plate, a touch panel, a protective film or a cover glass may be further disposed on the resin layer 15. Such a cover member may be bonded to the resin layer 15 via an adhesive layer such as OCA (Optical Clear Adhesive).

[0059] The organic insulating layer 12 is formed of an organic insulating material such as polyimide. The rib 5 and the sealing layers 14, SE1, SE2, and SE3 are formed of silicon nitride (SiNx), silicon oxide (SiOx), silicon oxynitride (SiON), or aluminum oxide (Al 2 O 3 ) or other inorganic insulating materials. In one example, the rib 5 is formed of silicon oxynitride, and the sealing layers 14, SE1, SE2, and SE3 are formed of silicon nitride. The resin layers 13 and 15 are formed of resin materials (organic insulating materials) such as epoxy resin and acrylic resin.

[0060] The lower electrodes LE1, LE2, and LE3 include, for example, a reflective layer formed of silver and a pair of conductive oxide layers covering the upper and lower surfaces of the reflective layer, respectively. Each conductive oxide layer may be formed of a transparent conductive oxide such as ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide), or IGZO (Indium Gallium Zinc Oxide).

[0061] The upper electrodes UE1, UE2, UE3 are formed of a metal material such as an alloy of magnesium and silver (MgAg), etc. For example, the lower electrodes LE1, LE2, LE3 correspond to anodes, and the upper electrodes UE1, UE2, UE3 correspond to cathodes.

[0062] The organic layers OR1, OR2, and OR3 are composed of a plurality of thin films including a light-emitting layer. In one example, the organic layers OR1, OR2, and OR3 have a structure in which a hole injection layer, a hole transport layer, an electron blocking layer, a light-emitting layer, a hole blocking layer, an electron transport layer, and an electron injection layer are sequentially stacked in the Z direction. However, the organic layers OR1, OR2, and OR3 may have other structures such as a so-called tandem structure including a plurality of light-emitting layers.

[0063] The cover layers CP1, CP2, and CP3, for example, have a stacked structure formed by overlapping multiple transparent layers. These transparent layers may include layers formed by inorganic materials and layers formed by organic materials. In addition, these transparent layers have different refractive indices from each other. For example, the refractive indices of these transparent layers are different from the refractive indices of the upper electrodes UE1, UE2, and UE3 and the refractive indices of the sealing layers SE1, SE2, and SE3. It should be noted that at least one of the cover layers CP1, CP2, and CP3 may also be omitted.

[0064] The bottom layer 63 and the shaft layer 64 of the partition wall 6 are formed of metal materials. As the metal material of the bottom layer 63, for example, molybdenum, titanium, titanium nitride (TiN), molybdenum-tungsten alloy (MoW) or molybdenum-niobium alloy (MoNb) can be used. As the metal material of the shaft layer 64, for example, aluminum, aluminum-neodymium alloy (AlNd), aluminum-yttrium alloy (AlY) or aluminum-silicon alloy (AlSi) can be used. It should be noted that the shaft layer 64 can be formed of an insulating material.

[0065] For example, the upper portion 62 of the partition wall 6 has a laminated structure of a lower layer formed of a metal material and an upper layer formed of a conductive oxide. As the metal material forming the lower layer, for example, titanium, titanium nitride, molybdenum, tungsten, molybdenum-tungsten alloy or molybdenum-niobium alloy can be used. As the conductive oxide forming the upper layer, for example, ITO or IZO can be used. It should be noted that the upper portion 62 may have a single-layer structure of a metal material. In addition, the upper portion 62 may include a layer formed of an insulating material.

[0066] A common voltage is supplied to the partition wall 6. The common voltage is supplied to the upper electrodes UE1, UE2, UE3 in contact with the side surface of the lower portion 61. The lower electrodes LE1, LE2, LE3 are supplied with pixel voltages corresponding to the video signals of the signal lines SL through the pixel circuits 1 of the sub-pixels SP1, SP2, SP3.

[0067] The organic layers OR1, OR2, and OR3 emit light in response to the application of voltage. Specifically, if a potential difference is formed between the lower electrode LE1 and the upper electrode UE1, the light-emitting layer of the organic layer OR1 emits light in a blue wavelength region. If a potential difference is formed between the lower electrode LE2 and the upper electrode UE2, the light-emitting layer of the organic layer OR2 emits light in a green wavelength region. If a potential difference is formed between the lower electrode LE3 and the upper electrode UE3, the light-emitting layer of the organic layer OR3 emits light in a red wavelength region.

[0068] As another example, the light-emitting layers of the organic layers OR1, OR2, and OR3 may emit light of the same color (e.g., white). In this case, the display device DSP may also include a color filter that converts the light emitted by the light-emitting layer into light of a color corresponding to the sub-pixels SP1, SP2, and SP3. In addition, the display device DSP may also include a layer including quantum dots that are excited by the light emitted by the light-emitting layer to generate light of a color corresponding to the sub-pixels SP1, SP2, and SP3.

[0069] Figure 4 2 is a schematic top view showing the second area A2 and a portion of the first area A1 surrounding the second area A2. The portion with a dot pattern in the figure corresponds to the partition wall 6. Figure 2 The layout shown has a plurality of sub-pixels SP1, SP2, and SP3. The sub-pixel SP1 is provided with a horizontal stripe pattern, the sub-pixel SP2 is provided with a diagonal stripe pattern, and the sub-pixel SP3 is provided with a vertical stripe pattern.

[0070] The second area A2 has a plurality of transmission areas TA. The transmission areas TA are surrounded by the partition wall 6. From another point of view, the partition wall 6 has a plurality of openings corresponding to the plurality of transmission areas TA. Figure 4 In the example of , the first region A1 does not have the transmission area TA. As another example, the first region A1 may have at least one transmission area TA.

[0071] exist Figure 4 In the example, the shape of the transmission area TA when viewed from above is circular. Not limited to this example, the transmission area TA may have other shapes such as a rectangular shape. The size of the transmission area TA is not particularly limited. In one example, the transmission area TA has a size that is smaller than the smallest sub-pixel (in Figure 4 The transmission area TA may have an area larger than that of each of the sub-pixels SP1, SP2, and SP3.

[0072] Similar to the first area A1, sub-pixels SP1, SP2, and SP3 are also arranged in the second area A2. Figure 4In the example, the sub-pixels SP1, SP2, and SP3 arranged in the first area A1 and the sub-pixels SP1, SP2, and SP3 arranged in the second area A2 have the same shape and size.

[0073] In each of the X direction and the Y direction, the resolution of the second area A2 (the density of the sub-pixels SP1, SP2, and SP3) is lower than the resolution of the first area A1. Figure 4 In the example, in each of the X direction and the Y direction, the resolution of the second area A2 is half the resolution of the first area A1.

[0074] From another point of view, in the second area A2, the pixels PX are thinned out compared to the first area A1, and the transmissive area TA is arranged in the resulting space. Figure 4 In the example of FIG. 5 , the transmissive areas TA and the pixels PX are alternately arranged in the X direction and the Y direction, respectively.

[0075] It should be noted that Figure 4 The shape and size of the second area A2 shown are only examples. The second area A2 may include Figure 4 In the example of more pixels PX and transmissive area TA. In addition, the second area A2 may include more than Figure 4 An example of a smaller number of pixels PX and a smaller number of transmissive areas TA.

[0076] Figure 5 It is along Figure 4 Schematic cross-sectional view of the display device DSP taken along line VV in FIG. Figure 3 The circuit layer 11 shown includes an inorganic insulating layer 31 and metal wiring 32 disposed on the inorganic insulating layer 31. The inorganic insulating layer 31 and the wiring 32 are covered by, for example, an organic insulating layer 12. Figure 5 In FIG. 1 , a portion of the circuit layer 11 located below the inorganic insulating layer 31 and the substrate 10 are omitted.

[0077] exist Figure 5 In the example, the transmission area TA overlaps the organic insulating layer 12 and the rib 5. The lower electrodes LE1, LE2, LE3, the laminated films FL1, FL2, FL3 and the sealing layers SE1, SE2, SE3 are not arranged in the transmission area TA. The resin layer 13 covers the rib 5 in the transmission area TA.

[0078] In such a configuration, external light L incident on the display surface of the display device DSP is transmitted to the back side through the transmission area TA. On the other hand, in areas other than the transmission area TA, the external light L is blocked by the partition wall 6 and the lower electrodes LE1, LE2, LE3.

[0079] The wiring 32 supplies pixel voltages to the sub-pixels SP1, SP2, and SP3 arranged in the second area A2, as described in detail later. Figure 5 In the example of FIG. 1 , the lower electrode LE2 of the sub-pixel SP2 contacts the wiring 32 through a contact hole provided in the organic insulating layer 12. From the viewpoint of improving the light transmittance in the transmission area TA, it is preferred that the various wirings (e.g., wiring 32, Figure 1 The scan line G, the signal line S, and the power line PL) shown do not overlap with the transmission area TA. However, a part of these wirings may overlap with the transmission area TA.

[0080] Figure 6 1 is a schematic cross-sectional view showing another example that can be applied to the transmission area TA. In the example of this figure, the rib 5 has an opening 5a in the transmission area TA. The resin layer 13 is in contact with the organic insulating layer 12 through the opening 5a. The opening 5a has, for example, the same planar shape as the transmission area TA (e.g., a circular shape).

[0081] Figure 7 1 is a schematic cross-sectional view showing another example applicable to the transmission area TA. In the example of this figure, in the transmission area TA, the rib 5 has an opening 5a, and the organic insulating layer 12 has an opening 12a. The opening 12a has, for example, the same planar shape as the transmission area TA (e.g., a circular shape).

[0082] exist Figure 7 In the example of FIG. 5 , the opening 5a is slightly larger than the opening 12a. The edge of the rib 5 along the opening 5a is located above the organic insulating layer 12. The resin layer 13 is in contact with the inorganic insulating layer 31 through the openings 5a and 12a.

[0083] Figure 8 FIG. 2 is a schematic cross-sectional view showing another example that can be applied to the transmission area TA. Figure 7 The rib 5 has an opening 5a, and the organic insulating layer 12 has an opening 12a. Figure 8 In the example of FIG. 5 , the opening 5 a is slightly smaller than the opening 12 a . The edge of the organic insulating layer 12 along the opening 12 a is covered by the rib 5 .

[0084] Fig. 9 A schematic cross-sectional view showing another example that can be applied to the transmission area TA. Figure 7 as well as Figure 8 The organic insulating layer 12 has an opening 12a. Fig. 9 In the example of FIG. 5 , the rib 5 does not have the opening 5 a . The edge of the organic insulating layer 12 along the opening 12 a is covered by the rib 5 .

[0085] Through Figures 6 to 9By removing at least one of the ribs 5 and the organic insulating layer 12 in the transmission area TA, the light transmittance of the transmission area TA can be improved. Figure 8 as well as Fig. 9 When the edge of the organic insulating layer 12 is covered by the rib 5 in this manner, for example, the organic insulating layer 12 can be protected from etching when the partition 6 and the laminated films FL1 , FL2 , and FL3 are patterned.

[0086] Fig.10 2 is a schematic plan view showing a part of the second area A2 in an enlarged manner. The pixel circuit 1 (see FIG. 2 ) of the sub-pixels SP1, SP2, and SP3 arranged in the second area A2 Figure 1 ) may also be arranged in the first area A1. In this way, by reducing the number of pixel circuits 1 arranged in the second area A2, the layout of the second area A2 can be made more efficient, and a wider space for arranging the transmission area TA can be ensured.

[0087] exist Fig.10 In the example of FIG. 1 , the pixel circuit 1a for applying a voltage to the lower electrode LE2 of the sub-pixel SP2 in the second area A2 is arranged in the first area A1. Figures 5 to 9 The sub-pixels SP1 and SP3 in the second region A2 are similarly connected to the wiring 32 shown in the cross section. The pixel circuit 1 for applying a voltage to the lower electrodes LE1 and LE3 may also be arranged in the first region A1.

[0088] The wiring 32 preferably does not overlap with the transmission area TA. Fig.10 In the example, a part of the wiring 32 is bent to avoid the transmission area TA. It should be noted that, similar to the wiring 32, the scanning line G, the signal line S, and the power line PL passing through the second area A2 may also be partially bent to avoid the transmission area TA.

[0089] According to the present embodiment described above, the display area DA has the second area A2 including the transmission area TA. Figure 1 The camera CR and the like are arranged to overlap in the display area DA. In addition, in the present embodiment, sub-pixels SP1, SP2, and SP3 are also arranged in the second area A2. Thus, the second area A2 can also display an image similar to that in the first area A1.

[0090] If the transmission area TA includes a linear shape, halation is likely to occur in the image captured by the camera CR. Figure 4When the transmission area TA is circular or has other curved outer shapes, halation can be suppressed. It should be noted that in the present embodiment, the outer shape of the transmission area TA is mainly defined by the light-shielding partition 6. In this case, the design freedom of the shape of the transmission area TA is improved.

[0091] The configuration of the sub-pixels SP1, SP2, SP3 and the transmissive area TA in the second area A2 is not limited to the configuration disclosed in this embodiment. In the following second to sixth embodiments, other configurations applicable to the second area A2 are disclosed. Figures 1 to 3 as well as Figures 5 to 10 In each embodiment, the same reference numerals are given to the same elements as those in the first embodiment, and repeated descriptions are omitted.

[0092] [Second embodiment]

[0093] Fig.11 2 is a schematic plan view showing a second area A2 and a portion of a first area A1 surrounding the second area A2 according to the second embodiment. Figure 4 Similarly, a dot pattern is given to the partition 6 , a horizontal stripe pattern is given to the sub-pixel SP1 , a diagonal stripe pattern is given to the sub-pixel SP2 , and a vertical stripe pattern is given to the sub-pixel SP3 .

[0094] In this embodiment, the sub-pixels SP1, SP2, and SP3 arranged in the second area A2 are referred to as sub-pixels SP1a, SP2a, and SP3a, respectively. Fig.11 In the example, sub-pixels SP1a, SP2a, and SP3a are all rectangular in shape with the same size. It should be noted that the "sub-pixel size" is equivalent to the area of ​​the opening of the partition wall 6 in the sub-pixel when viewed from above, and more specifically, is equivalent to the area of ​​the area surrounded by the upper portion 62 of the partition wall 6 when viewed from above.

[0095] exist Fig.11 In the example, the sizes of the blue sub-pixels SP1 and SP1a are different from each other. In addition, the sizes of the green sub-pixels SP2 and SP2a are also different from each other. The sizes of the red sub-pixels SP3 and SP3a are different from each other. Fig.11 The same, but can also be different from each other.

[0096] For example, the sub-pixels SP1a, SP2a, and SP3a have the same size. In this case, the sub-pixels SP1a and SP2a arranged in the second area A2 have smaller sizes than the sub-pixels SP1 and SP2 arranged in the first area A1.

[0097] exist Fig.11In the second area A2, a transmission area TA is arranged between two adjacent sub-pixels SP1a, SP2a, and SP3a in the X direction and between two adjacent sub-pixels SP1a, SP2a, and SP3a in the Y direction. More specifically, the second area A2 includes a column C1a in which the sub-pixel SP1a and the transmission area TA are alternately arranged in the Y direction, a column C2a in which the sub-pixel SP2a and the transmission area TA are alternately arranged in the Y direction, and a column C3a in which the sub-pixel SP3a and the transmission area TA are alternately arranged in the Y direction. The columns C1a, C2a, and C3a are repeatedly arranged in the X direction. The pitch of the columns C1a, C2a, and C3a in the X direction is the same as the pitch of the sub-pixels SP1 and SP2 (or the sub-pixels SP1 and SP3) in the X direction.

[0098] The shape of the transmission area TA is, for example, Figure 4 The shape is circular, but other shapes are possible. Fig.11 The transmission area TA in Figure 4 In addition, in the second area A2, there is a configuration of Figure 4 An example of a transmission area TA with many transmissive areas.

[0099] As in the present embodiment, by making the size of the sub-pixel arranged in the second area A2 different from the size of the sub-pixel arranged in the first area A1, the degree of freedom in the layout of the transmissive area TA in the second area A2 can be increased. Thus, for example, the transmissive area TA can be increased as much as possible, and the light transmittance of the second area A2 can be increased.

[0100] [Third embodiment]

[0101] Fig.12 2 is a schematic plan view showing a second area A2 and a portion of a first area A1 surrounding the second area A2 according to the third embodiment. Figure 4 Similarly, a dot pattern is given to the partition 6 , a horizontal stripe pattern is given to the sub-pixel SP1 , a diagonal stripe pattern is given to the sub-pixel SP2 , and a vertical stripe pattern is given to the sub-pixel SP3 .

[0102] In this embodiment, the sub-pixels SP1, SP2, and SP3 arranged in the second area A2 are referred to as sub-pixels SP1b, SP2b, and SP3b, respectively. Fig.12 In the example of FIG. 1 , the sub-pixels SP1 b , SP2 b , and SP3 b have shapes different from those of the sub-pixels SP1 , SP2 , and SP3 , respectively.

[0103] Specifically, the sub-pixels SP1, SP2, and SP3 are rectangular, and the sub-pixels SP1b, SP2b, and SP3b are circular. For example, the sub-pixels SP1b, SP2b, and SP3b have the same size (diameter), but may be different from each other.

[0104] exist Fig.12 In the example of FIG. 1 , the second area A2 includes a column C1b in which two sub-pixels SP1b and one transmission area TA are alternately arranged in the Y direction, a column C2b in which two sub-pixels SP2b and one transmission area TA are alternately arranged in the Y direction, and a column C3b in which two sub-pixels SP3b and one transmission area TA are alternately arranged in the Y direction. The columns C1b, C2b, and C3b are repeatedly arranged in the X direction. The shape of the transmission area TA is, for example, similar to Figure 4 It is also circular in shape, but can also be other shapes.

[0105] As in the present embodiment, by making the shape of the sub-pixel arranged in the second area A2 different from the shape of the sub-pixel arranged in the first area A1, the degree of freedom in the layout of the transmissive area TA in the second area A2 can be increased. Thus, for example, the transmissive area TA can be increased as much as possible, and the light transmittance of the second area A2 can be increased.

[0106] Fig.13 2 is a schematic plan view of two sub-pixels SP1b arranged in the Y direction. In the following description, a display element of one sub-pixel SP1b is referred to as a first display element DE11, and a display element of another sub-pixel SP1b is referred to as a second display element DE12.

[0107] The rib 5 has a first pixel opening AP11 surrounding the first display element DE11 and a second pixel opening AP12 surrounding the second display element DE12. Fig.13 In the example shown in FIG. 1 , both pixel openings AP11 and AP12 are circular.

[0108] In addition, the partition wall 6 has a first opening AP61 surrounding the first pixel opening AP11 and a second opening AP62 surrounding the second pixel opening AP12. Fig.13 In the example of FIG. 1 , these openings AP61 and 62 are also circular in shape like the pixel openings AP11 and AP12 .

[0109] Display elements DE11 and DE12 have a common lower electrode LE1b. Fig.13 In the example of , the lower electrode LE1b has a first portion P1 overlapping with the first pixel opening AP11, a second portion P2 overlapping with the second pixel opening AP12, and a third portion P3 connecting the first portion P1 and the second portion P2. The first portion P1 and the second portion P2 are, for example, circular. For example, the width of the third portion P3 in the X direction is smaller than the width (diameter) of the first portion P1 and the second portion P2 in the X direction.

[0110] Fig.14 It is along Fig.13A schematic cross-sectional view of the display device DSP taken along line XIV-XIV in FIG. The first display element DE11 includes a first organic layer OR11 covering the lower electrode LE1b through a first pixel opening AP11, a first upper electrode UE11 covering the first organic layer OR11, and a first cover layer CP11 covering the first upper electrode UE11. The second display element DE12 includes a second organic layer OR12 covering the lower electrode LE1b through a second pixel opening AP12, a second upper electrode UE12 covering the second organic layer OR12, and a second cover layer CP12 covering the second upper electrode UE12.

[0111] The first organic layer OR11, the first upper electrode UE11, and the first cap layer CP11 overlap with the first opening AP61 of the partition wall 6. The second organic layer OR12, the second upper electrode UE12, and the second cap layer CP12 overlap with the second opening AP62 of the partition wall 6.

[0112] The upper electrodes UE11 and UE12 are in contact with at least one of the bottom layer 63 and the shaft layer 64 of the partition wall 6. The first organic layer OR11 emits blue light according to the potential difference between the lower electrode LE1b and the first upper electrode UE11. Similarly, the second organic layer OR12 emits blue light according to the potential difference between the lower electrode LE1b and the second upper electrode UE12.

[0113] Part of the partition wall 6 is located between the display elements DE11 and DE12. That is, the organic layers OR11 and OR12 are separated by the partition wall 6. Similarly, the upper electrodes UE11 and UE12 are separated, and the cover layers CP11 and CP12 are also separated. The display elements DE11 and DE12 and the partition wall 6 therebetween are continuously covered by the sealing layer SE1b.

[0114] In such a configuration, one pixel circuit 1 (see Figure 1 ) drives the display elements DE11 and DE12. Thus, even when the pixel circuit 1 is arranged in the second area A2, a large space for arranging the transmission area TA can be ensured.

[0115] It should be noted that for Fig.12 The two sub-pixels SP2b arranged along the Y direction and the two sub-pixels SP3b arranged along the Y direction can both be applied. Fig.13 as well as Fig.14 The sub-pixel SP1b shown has the same structure.

[0116] [Fourth embodiment]

[0117] Fig.15 1 is a schematic plan view showing a second area A2 and a portion of a first area A1 surrounding the second area A2 according to the fourth embodiment. Figure 4Similarly, a dot pattern is given to the partition 6 , a horizontal stripe pattern is given to the sub-pixel SP1 , a diagonal stripe pattern is given to the sub-pixel SP2 , and a vertical stripe pattern is given to the sub-pixel SP3 .

[0118] In this embodiment, the sub-pixels SP1, SP2, and SP3 arranged in the second area A2 are referred to as sub-pixels SP1c, SP2c, and SP3c, respectively. Fig.15 In the example of FIG. 1 , the sub-pixel SP1 and the sub-pixel SP1c have the same shape and size. On the other hand, the sub-pixels SP2c and SP3c have shapes different from those of the sub-pixels SP2 and SP3, respectively.

[0119] Specifically, the sub-pixels SP1, SP2, SP3, and SP1c are rectangular, and the sub-pixels SP2c and SP3c are circular. For example, the sub-pixels SP2c and SP3c have the same size (diameter), but may be different from each other.

[0120] exist Fig.15 In the example of FIG. 1 , the second area A2 includes columns C1c in which sub-pixels SP1c and transmissive areas TA are alternately arranged in the Y direction, and columns C2c in which sub-pixels SP3c, sub-pixels SP2c and transmissive areas TA are alternately arranged in the Y direction. Columns C1c and C2c are repeatedly arranged in the X direction. The shape of the transmissive area TA is, for example, similar to Figure 4 It is also circular in shape, but may be in other shapes.

[0121] exist Fig.15 In the example, the size of the sub-pixel SP1c is larger than the sizes of the sub-pixels SP2c and SP3c. This size relationship is the same as the size relationship between the sub-pixel SP1 and the sub-pixels SP2 and SP3. Thus, the difference in display quality between the first area A1 and the second area A2 can be reduced.

[0122] [Fifth embodiment]

[0123] Fig.16 FIG. 1 is a schematic plan view showing a second area A2 and a portion of a first area A1 surrounding the second area A2 according to the fifth embodiment. Figure 4 Similarly, a dot pattern is given to the partition 6 , a horizontal stripe pattern is given to the sub-pixel SP1 , a diagonal stripe pattern is given to the sub-pixel SP2 , and a vertical stripe pattern is given to the sub-pixel SP3 .

[0124] In this embodiment, the sub-pixels SP1, SP2, and SP3 arranged in the second area A2 are referred to as sub-pixels SP1d, SP2d, and SP3d, respectively. Fig.16 In the example of FIG. 1 , the sub-pixels SP1d, SP2d, and SP3d are all rectangular in shape like the sub-pixels SP1, SP2, and SP3. In addition, the sub-pixel SP1 and the sub-pixel SP1d have the same size.

[0125] On the other hand, sub-pixels SP2d and SP3d have sizes different from those of sub-pixels SP2 and SP3. Specifically, the sizes of sub-pixels SP2d and SP3d are larger than those of sub-pixels SP2 and SP3. For example, sub-pixels SP1d, SP2d, and SP3d have the same shape and size, but may be different from each other.

[0126] exist Fig.16 In the example of FIG. 1 , the second area A2 includes columns C1d in which sub-pixels SP1d and transmissive areas TA are alternately arranged in the Y direction, columns C2d in which sub-pixels SP2d and transmissive areas TA are alternately arranged in the Y direction, and columns C3d in which sub-pixels SP3d and transmissive areas TA are alternately arranged in the Y direction. Columns C1d, C2d, and C3d are repeatedly arranged in the X direction. The shape of the transmissive area TA is, for example, similar to Figure 4 It is also circular in shape, but may be in other shapes.

[0127] [Sixth embodiment]

[0128] Fig.17 FIG. 1 is a schematic plan view showing a second area A2 and a portion of a first area A1 surrounding the second area A2 according to the sixth embodiment. Figure 4 Similarly, a dot pattern is given to the partition 6 , a horizontal stripe pattern is given to the sub-pixel SP1 , a diagonal stripe pattern is given to the sub-pixel SP2 , and a vertical stripe pattern is given to the sub-pixel SP3 .

[0129] In this embodiment, the sub-pixels SP1, SP2, and SP3 arranged in the second area A2 are referred to as sub-pixels SP1e, SP2e, and SP3e, respectively. Fig.17 In the example of FIG. 1 , the sub-pixels SP1e, SP2e, and SP3e are all rectangular in shape like the sub-pixels SP1, SP2, and SP3. However, while the sides of the sub-pixels SP1, SP2, SP3, and SP1e are parallel to the X direction and the Y direction, the sides of the sub-pixels SP2e and SP3e are inclined relative to the X direction and the Y direction. The shape of the transmission area TA is, for example, similar to Figure 4 It is also circular in shape, but may be in other shapes.

[0130] The sizes of the sub-pixels SP1e, SP2e, and SP3e are respectively smaller than the sizes of the sub-pixels SP1, SP2, and SP3. Fig.17 In the example, the size of the sub-pixel SP1e is larger than the sizes of the sub-pixels SP2e and SP3e. This size relationship is the same as the size relationship between the sub-pixel SP1 and the sub-pixels SP2 and SP3. Fig.15 The same as the example, the difference in display quality between the first area A1 and the second area A2 can be reduced.

[0131] In the second area A2, groups GR consisting of sub-pixels SP1e, SP2e, SP3e and transmissive areas TA are repeatedly arranged in the X and Y directions. The pitches of the groups GR in the X and Y directions are the same as the pitches of the pixels PX arranged in the first area A1 in the X and Y directions.

[0132] That is, in Fig.17 In the configuration of , the second area A2 also achieves the same resolution as that of the first area A1. Thus, the difference in display quality between the first area A1 and the second area A2 can be reduced.

[0133] In the second to sixth embodiments described above, the first sub-pixel disposed in the first area A1 and the second sub-pixel disposed in the second area A2 and displaying the same color as the first sub-pixel have different shapes or sizes. Fig.11 ), the sizes of the blue sub-pixels SP1 and SP1a are different from each other, and the sizes of the green sub-pixels SP2 and SP2a are also different from each other. Fig.12 ), the shapes of the blue sub-pixels SP1 and SP1b are different from each other, the shapes of the green sub-pixels SP2 and SP2b are different from each other, and the shapes of the red sub-pixels SP3 and SP3b are different from each other. Fig.15 ), the shapes of the green sub-pixels SP2 and SP2b are different from each other, and the shapes of the red sub-pixels SP3 and SP3c are also different from each other. Fig.16 ), the sizes of the green sub-pixels SP2 and SP2d are different from each other, and the sizes of the red sub-pixels SP3 and SP3d are also different from each other. Fig.17 ), the sizes of blue sub-pixels SP1 and SP1e are different from each other, the sizes of green sub-pixels SP2 and SP2e are different from each other, and the sizes of red sub-pixels SP3 and SP3e are different from each other. In addition to these embodiments, various shapes or sizes can be applied to the first sub-pixel arranged in the first area A1 and the second sub-pixel arranged in the second area A2.

[0134] Based on the display device described above as an embodiment of the present invention, any display device that can be implemented by appropriately designing and modifying the display device by a person skilled in the art also belongs to the scope of the present invention as long as it includes the gist of the present invention.

[0135] Within the scope of the concept of the present invention, those skilled in the art can think of various variations, which also belong to the scope of the present invention. For example, embodiments obtained by adding, deleting or designing the above-mentioned embodiments appropriately by those skilled in the art, or embodiments obtained by adding, omitting or changing the conditions of the processes are included in the scope of the present invention as long as they have the gist of the present invention.

[0136] In addition, regarding other effects brought about by the methods described in the above-mentioned embodiments, the effects that are clear from the description of this specification or the effects that can be appropriately thought of by those skilled in the art are of course understood as the effects brought about by the present invention.

Claims

1. A display device comprising: a first region and a second region each including a plurality of sub-pixels; and a partition wall including a conductive lower portion and an upper portion having an end portion protruding from a side surface of the lower portion and surrounding each of the plurality of sub-pixels, Each of the plurality of sub-pixels comprises: Lower electrode; an organic layer covering the lower electrode and emitting light in response to application of a voltage; and an upper electrode covering the organic layer and contacting the lower portion of the partition wall, The second region has a plurality of transmission regions which are surrounded by the partition wall and do not overlap with the lower electrode. The resolution of the second region is lower than the resolution of the first region.

2. The display device according to claim 1, further comprising: an organic insulating layer disposed below the lower electrode; and a rib portion covering an end portion of the lower electrode and the organic insulating layer and having a pixel opening in each of the plurality of sub-pixels, The organic layer covers the lower electrode through the pixel opening, The partition wall is arranged on the rib.

3. The display device according to claim 2, wherein: The transmission region overlaps the organic insulating layer and the rib.

4. The display device according to claim 2, wherein: At least one of the organic insulating layer and the rib has an opening overlapping the transmission area.

5. The display device according to any one of claims 1 to 4, wherein: The first region does not have the transmission region.

6. The display device according to claim 1, further comprising a plurality of pixel circuits for applying voltages to the lower electrodes of the plurality of sub-pixels, The pixel circuit of at least one of the sub-pixels arranged in the second region is arranged in the first region.

7. The display device according to any one of claims 1 to 4, wherein: The transmission area is circular in a plan view.

8. A display device comprising: a first region and a second region each including a plurality of sub-pixels; and a partition wall including a conductive lower portion and an upper portion having an end portion protruding from a side surface of the lower portion and surrounding each of the plurality of sub-pixels, Each of the plurality of sub-pixels comprises: Lower electrode; an organic layer covering the lower electrode and emitting light in response to application of a voltage; and an upper electrode covering the organic layer and contacting the lower portion of the partition wall, The second region has a plurality of transmission regions which are surrounded by the partition wall and do not overlap with the lower electrode. The plurality of sub-pixels include: a first sub-pixel disposed in the first region; and a second sub-pixel, which is arranged in the second region and displays the same color as the first sub-pixel, The first sub-pixel and the second sub-pixel have different shapes or sizes from each other.

9. The display device according to claim 8, wherein: The size of the second sub-pixel is smaller than the size of the first sub-pixel.

10. The display device according to claim 8, wherein: The size of the second sub-pixel is larger than the size of the first sub-pixel.

11. The display device according to claim 8, wherein: The first sub-pixel is rectangular in shape, The second sub-pixel is circular in shape.

12. The display device according to claim 8, further comprising: an organic insulating layer disposed below the lower electrode; and a rib portion covering an end portion of the lower electrode and the organic insulating layer and having a pixel opening in each of the plurality of sub-pixels, The organic layer covers the lower electrode through the pixel opening, The partition wall is arranged on the rib.

13. The display device according to claim 12, wherein: The transmission region overlaps the organic insulating layer and the rib.

14. The display device according to claim 12, wherein: At least one of the organic insulating layer and the rib has an opening overlapping the transmission area.

15. The display device according to any one of claims 8 to 14, wherein: The first region does not have the transmission region.

16. The display device according to any one of claims 8 to 14, further comprising a plurality of pixel circuits for applying voltages to the lower electrodes of the plurality of sub-pixels, The pixel circuit of at least one of the sub-pixels arranged in the second region is arranged in the first region.

17. The display device according to any one of claims 8 to 14, wherein: The transmission area is circular in a plan view.

18. A display device comprising: Lower electrode; a first organic layer covering the lower electrode and emitting light in response to application of a voltage; a second organic layer, which is separated from the first organic layer and covers the lower electrode, and emits light in response to application of a voltage; a partition wall including a conductive lower portion and an upper portion having an end portion protruding from a side surface of the lower portion, wherein at least a portion of the partition wall is located between the first organic layer and the second organic layer; a first upper electrode covering the first organic layer and contacting the lower portion; and A second upper electrode covers the second organic layer and contacts the lower portion.

19. The display device according to claim 18, wherein: The first organic layer and the second organic layer emit light of the same color in response to application of voltage.

20. The display device according to claim 18 or 19, wherein: The partition wall has: a first opening overlapping the first organic layer; and The second opening overlaps with the second organic layer.

Images