Electro-optical devices and electronic equipment
By designing a light emitting element with a specific reflective layer and electrode in an electro-optical device, and adding a light barrier between the light emitting regions, the problems of reduced light brightness and low extraction efficiency in the prior art are solved, and a more efficient light output is achieved.
Patent Information
- Application Number
- JP2021077342
- Authority / Receiving Office
- JP · JP
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2021-04-30
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2041-04-30
Smart Images

Figure 0007666105000001 
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Figure 0007666105000003
Abstract
Description
[Technical field]
[0001] The present invention relates to an electro-optical device and an electronic device. [Background technology]
[0002] There is known an electro-optical device having a light-emitting element such as an organic electroluminescence (EL) element. In this type of device, a color filter that transmits light in a predetermined wavelength range from the light emitted by the light-emitting element is generally provided, as disclosed in Patent Document 1, for example. [Prior art documents] [Patent documents]
[0003] [Patent Document 1] JP 2014-89804 A Summary of the Invention [Problem to be solved by the invention]
[0004] However, the device described in Patent Document 1 has a problem in that when light from the light-emitting element passes through the color filter, the luminance of the light is significantly attenuated, making it impossible to extract the light efficiently. [Means for solving the problem]
[0005] One embodiment of the electro-optical device of the present invention comprises a first light-emitting element including a first electrode and a first reflective layer arranged at a position where the optical distance between the first electrode and the first electrode is a first optical distance, a second light-emitting element including a second electrode integrally formed with the first electrode and a second reflective layer arranged at a position where the optical distance between the second electrode and the second electrode is a second optical distance different from the first optical distance, and a light-shielding portion arranged between the light-emitting region of the first light-emitting element and the light-emitting region of the second light-emitting element in a planar view, wherein a layer in contact with the light-shielding portion is substantially colorless and transparent.
[0006] Another aspect of the electro-optical device of the present invention includes a first light-emitting element including a first electrode and a first reflective layer disposed at a position where an optical distance between the first electrode and the first electrode is a first optical distance; a second light-emitting element including a second electrode integral with the first electrode and a second reflective layer disposed at a position where an optical distance between the second electrode and the second electrode is a second optical distance different from the first optical distance; a light-shielding portion disposed between a light-emitting region of the first light-emitting element and a light-emitting region of the second light-emitting element in a plan view; and a first relay electrode electrically connected to a first pixel electrode of the first light-emitting element. the first pixel electrode has a first contact portion that penetrates the insulating layer and is electrically connected to the first relay electrode, the second pixel electrode has a second contact portion that penetrates the insulating layer and is electrically connected to the second relay electrode, and the light-shielding portion includes the first contact portion and the second contact portion in a planar view.
[0007] An aspect of an electronic device of the present invention includes the electro-optical device of any of the aspects described above, and a control unit that controls the operation of the electro-optical device. [Brief description of the drawings]
[0008] [Figure 1] FIG. 1 is a plan view illustrating an electro-optical device according to an embodiment. [Diagram 2] 2 is an equivalent circuit diagram of the sub-pixel shown in FIG. [Diagram 3] FIG. 2 is a plan view showing a part of an element substrate in the embodiment. [Figure 4] 4 is a cross-sectional view taken along line AA in FIG. [Diagram 5] FIG. 4 is a cross-sectional view taken along line BB in FIG. [Figure 6] 4 is a cross-sectional view taken along line CC in FIG. [Figure 7] 13A and 13B are diagrams illustrating the results of a simulation for explaining the effect of a light blocking portion. [Figure 8]FIG. 11 is a plan view of an element substrate in Modification 1. [Figure 9] FIG. 11 is a plan view of an element substrate in Modification 2. [Figure 10] FIG. 1 is a diagram illustrating a virtual image display device as an example of an electronic device. [Figure 11] FIG. 1 is a perspective view showing a personal computer as an example of an electronic device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0009] Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Note that the dimensions and scale of each part in the drawings may differ from the actual dimensions and some parts are shown diagrammatically to facilitate understanding. Furthermore, the scope of the present invention is not limited to these embodiments unless otherwise specified in the following description to the effect that the present invention is limited thereto.
[0010] 1. Electro-optical device 1-1. Overview of electro-optical devices 1 is a plan view diagrammatically illustrating an electro-optical device 100 according to an embodiment. The electro-optical device 100 is a device that displays an image using an organic electroluminescence (EL). The electro-optical device 100 is, for example, a microdisplay that is suitable for use in a head-mounted display or the like.
[0011] The electro-optical device 100 will be described below. For convenience, the following description will use the mutually orthogonal X-axis, Y-axis, and Z-axis as appropriate. In addition, in the following, one direction along the X-axis is the X1 direction, and the direction opposite to the X1 direction is the X2 direction. Similarly, one direction along the Y-axis is the Y1 direction, and the direction opposite to the Y1 direction is the Y2 direction. One direction along the Z-axis is the Z1 direction, and the direction opposite to the Z1 direction is the Z2 direction. In the following, viewing in the Z1 direction or Z2 direction may be referred to as "planar view."
[0012] The electro-optical device 100 has a display area A10 for displaying an image, and a peripheral area A20 surrounding the periphery of the display area A10 in a planar view. In the example shown in Fig. 1, the shape of the display area A10 in a planar view is a rectangle. Note that the shape of the display area A10 in a planar view is not limited to the example shown in Fig. 1, and may be another shape.
[0013] The display area A10 is composed of a plurality of pixels P. Each pixel P is the smallest unit for displaying an image. The plurality of pixels P are arranged in a matrix along the X-axis and Y-axis directions, for example. Each pixel P has a sub-pixel PB from which light in the blue wavelength range is obtained, a sub-pixel PG from which light in the green wavelength range is obtained, and a sub-pixel PR from which light in the red wavelength range is obtained.
[0014] In the following description, there is no distinction between the sub-pixels PB, PG, and PR, and each of these may be referred to as the sub-pixel P0. The sub-pixel P0 is the smallest unit whose light emission can be controlled independently.
[0015] 1, the electro-optical device 100 includes an element substrate 200 and a light-transmitting substrate 300. The electro-optical device 100 has a so-called top emission structure. The electro-optical device 100 emits light from the light-transmitting substrate 300. Note that light transmittance means transmittance to visible light, and preferably means that the transmittance of visible light is 50% or more.
[0016] The element substrate 200 has a data line driving circuit 101, a scanning line driving circuit 102, a control circuit 103, and a plurality of external terminals 104. The data line driving circuit 101, the scanning line driving circuit 102, the control circuit 103, and the plurality of external terminals 104 are arranged in the peripheral region A20. The data line driving circuit 101 and the scanning line driving circuit 102 are peripheral circuits that control the driving of the plurality of sub-pixels P0. The control circuit 103 controls the driving of the data line driving circuit 101 and the scanning line driving circuit 102. Image data is supplied to the control circuit 103 from a higher-level circuit (not shown). The control circuit 103 supplies various signals based on the image data to the data line driving circuit 101 and the scanning line driving circuit 102. Although not shown, an FPC (Flexible printed circuits) board or the like for electrical connection with the higher-level circuit is connected to the external terminal 104. In addition, a power supply circuit (not shown) is electrically connected to the element substrate 200.
[0017] The light-transmitting substrate 300 is a cover that protects the element substrate 200 and the like. The light-transmitting substrate 300 is formed of, for example, a glass substrate or a quartz substrate. The light-transmitting substrate 300 is bonded to the element substrate 200 via an adhesive (not shown). The adhesive is, for example, a transparent adhesive using a resin material such as an epoxy resin or an acrylic resin.
[0018] Fig. 2 is an equivalent circuit diagram of the sub-pixel P0 shown in Fig. 1. One sub-pixel P0 and its corresponding elements are representatively illustrated in Fig. 2. As shown in Fig. 2, a plurality of scanning lines 111, a plurality of data lines 112, a plurality of power supply lines 113, and a plurality of power supply lines 114 are provided on the element substrate 200.
[0019] The scanning lines 111 extend in a direction along the X-axis, whereas the data lines 112 extend in a direction along the Y-axis. Although not shown, the multiple scanning lines 111 and the multiple data lines 112 are arranged in a lattice pattern. Although not shown, the scanning lines 111 are connected to the scanning line driving circuit 102 shown in FIG. 1, and the data lines 112 are connected to the data line driving circuit 101 shown in FIG. 1.
[0020] 2, the element substrate 200 has, for each sub-pixel P0, a light-emitting element 120 and a pixel circuit 130 that supplies a current to the light-emitting element 120. The light-emitting element 120 is configured with an OLED (organic light-emitting diode). As will be described in detail later, the light-emitting element 120 has a pixel electrode 226, a common electrode 229, and an organic layer 228 disposed therebetween.
[0021] The pixel electrode 226 is electrically connected to the power supply line 113 via the pixel circuit 130. Meanwhile, the common electrode 229 is electrically connected to the power supply line 114. Here, a high-level power supply potential Vel is supplied to the power supply line 113 from a power supply circuit (not shown). A low-level power supply potential Vct is supplied to the power supply line 114 from a power supply circuit (not shown). Therefore, the pixel electrode 226 functions as an anode, and the common electrode 229 functions as a cathode. In the light-emitting element 120, holes supplied from the pixel electrode 226 and electrons supplied from the common electrode 229 are recombined in the organic layer 228, causing the organic layer 228 to generate light.
[0022] The pixel circuit 130 has a switching transistor 131, a driving transistor 132, and a storage capacitor 133. The gate of the switching transistor 131 is electrically connected to the scanning line 111. One of the source and drain of the switching transistor 131 is electrically connected to the data line 112, and the other is electrically connected to the gate of the driving transistor 132. One of the source and drain of the driving transistor 132 is electrically connected to the power supply line 113, and the other is electrically connected to the pixel electrode 226. One of the two electrodes of the storage capacitor 133 is connected to the gate of the driving transistor 132, and the other is connected to the power supply line 113.
[0023] In the pixel circuit 130 described above, when the scanning line 111 is selected by the scanning line driving circuit 102 making the scanning signal active, the switching transistor 131 provided in the selected sub-pixel P0 is turned on. Then, a data signal is supplied from the data line 112 to the driving transistor 132 corresponding to the selected scanning line 111. The driving transistor 132 supplies a current corresponding to the potential of the supplied data signal, i.e., the potential difference between the gate and the source, to the light-emitting element 120. As a result, the light-emitting element 120 emits light with a luminance corresponding to the magnitude of the current supplied from the driving transistor 132. Thereafter, when the scanning line driving circuit 102 cancels the selection of the scanning line 111 and the switching transistor 131 is turned off, the potential of the gate of the driving transistor 132 is held by the holding capacitance 133. Therefore, the light-emitting element 120 can maintain its emission even after the switching transistor 131 is turned off.
[0024] It should be noted that the configuration of the pixel circuit 130 described above is not limited to the illustrated configuration. For example, the pixel circuit 130 may further include a transistor that controls conduction between the pixel electrode 226 and the driving transistor 132.
[0025] 1-2.Details of the element substrate Fig. 3 is a plan view showing a part of the element substrate 200 in the embodiment. Fig. 4 is a cross-sectional view taken along line AA in Fig. 3. Fig. 5 is a cross-sectional view taken along line BB in Fig. 3. Fig. 6 is a cross-sectional view taken along line CC in Fig. 3. Note that Fig. 3 representatively illustrates a light-shielding portion 250 (described later) and related elements for one pixel P among the elements constituting the element substrate 200.
[0026] 3, the element substrate 200 has a set of light-emitting elements 120R, 120G, and 120B for each pixel P. The light-emitting element 120R is the light-emitting element 120 provided in the sub-pixel PR. The light-emitting element 120G is the light-emitting element 120 provided in the sub-pixel PG. The light-emitting element 120B is the light-emitting element 120 provided in the sub-pixel PB.
[0027] Here, the light emitting element 120R is an example of a "first light emitting element," and the light emitting element 120G is an example of a "second light emitting element." Note that the light emitting element 120G may be composed of a plurality of light emitting elements. In this case, for example, the two light emitting elements share one pixel circuit 130 for each sub-pixel PG.
[0028] In this embodiment, the light emitting element 120B is disposed at a position in the Y2 direction relative to the light emitting element 120R. The light emitting element 120G is disposed at a position in the X1 direction relative to the light emitting element 120R and the light emitting element 120B.
[0029] The light emitting element 120R has a light emitting region RR that emits light LLR for the sub-pixel PR. The light emitting element 120G has a light emitting region RG that emits light LLG for the sub-pixel PG. The light emitting element 120B has a light emitting region RB that emits light LLB for the sub-pixel PB.
[0030] In the example shown in FIG. 3, each of the light emitting regions RR, RG, and RB is a quadrangle in plan view. However, the area of the light emitting region RR is smaller than the area of each of the light emitting regions RB and RG. Also, the area of the light emitting region RB is smaller than the area of the light emitting region RG. The areas and plan view shapes of the light emitting regions RR, RG, and RB are not limited to the example shown in FIG. 3, and are arbitrary. For example, the area of the light emitting region RR may be equal to the area of the light emitting region RB or the light emitting region RG. Also, the shapes of the light emitting regions RR, RG, and RB are not limited to a quadrangle, and may be other polygons such as an octagon. Also, the plan view shapes of the light emitting regions RR, RG, and RB may be different from each other.
[0031] 4 and 5, the element substrate 200 includes a substrate 210, a light emitting element layer 220, a sealing layer 230, an adhesion layer 240, a light shielding portion 250, and a resin layer 260. These layers are stacked in the Z1 direction in this order. Each layer constituting the element substrate 200 is formed by appropriately using a known film formation method.
[0032] The substrate 210 is, for example, a silicon substrate. Although not shown, the pixel circuit 130 and various wirings connected thereto are formed on the substrate 210. The substrate 210 is not limited to a silicon substrate, and may be, for example, a glass substrate, a resin substrate, or a ceramic substrate. In this embodiment, since the electro-optical device 100 is a top emission type, the substrate 210 may not have optical transparency. The aforementioned transistors of the pixel circuit 130 may be any of MOS type transistors, thin film transistors, and field effect transistors. When the transistors of the pixel circuit 130 are MOS type transistors having an active layer, the active layer may be formed of a silicon substrate. In addition, examples of materials of the components and various wirings constituting the pixel circuit 130 include conductive materials such as polysilicon, metal, metal silicide, and metal compound.
[0033] The light emitting element layer 220 is a layer in which the light emitting elements 120R, 120G, and 120B are provided. Specifically, the light emitting element layer 220 has an insulating layer 221, a reflective layer 222, a reflective layer 223, an insulating layer 224, a distance adjustment layer 225, a plurality of pixel electrodes 226R, 226G, and 226B, an element isolation layer 227, an organic layer 228, and a common electrode 229. These layers are stacked in this order in the Z1 direction.
[0034] The insulating layer 221 is an interlayer insulating film disposed between the substrate 210 and the reflective layer 222. The insulating layer 221 is made of an insulating material such as silicon oxide (SiO2).
[0035] The reflective layer 222 is a layer having light reflectivity that reflects light generated in the organic layer 228 in the Z1 direction. The reflective layer 222 is divided into a plurality of portions arranged in a matrix corresponding to the plurality of sub-pixels P0 in a plan view. That is, the reflective layer 222 includes a reflective layer 222R corresponding to the sub-pixel PR, a reflective layer 222B corresponding to the sub-pixel PB, and a reflective layer 222G corresponding to the sub-pixel PG. The reflective layer 222R is an example of a "first reflective layer." The reflective layer 222B is an example of a "second reflective layer."
[0036] Examples of the material of the reflective layer 222 include metals such as Al (aluminum), Ag (silver), Cu (copper), and Ti (titanium), and alloys of any of these metals. For example, the reflective layer 222 is made of a laminate of a film made of Ti and a film made of an alloy containing Al and Cu. In the example shown in FIG. 4 and FIG. 5, the reflective layer 222 also functions as wiring. Although not shown, the wiring is electrically connected to, for example, the pixel circuit 130 described above. Note that the reflective layer 222 does not have to function as the wiring. In this case, wiring is provided separately from the reflective layer 222. In addition, the light reflectivity means reflectivity to visible light, and preferably means that the reflectance of visible light is 50% or more.
[0037] The enhanced reflection layer 223 is a layer having optical transparency and insulating properties for increasing the light reflectivity of the reflective layer 222. The enhanced reflection layer 223 is disposed over the entire area of the reflective layer 222 in a plan view. The enhanced reflection layer 223 is formed of, for example, a silicon oxide film.
[0038] The insulating layer 224 has a first insulating layer 224a and a second insulating layer 224b. The first insulating layer 224a fills the gaps between the divided portions of the reflective layer 222 and the enhanced reflective layer 223, and is disposed over the entire area of the enhanced reflective layer 223. The second insulating layer 224b is disposed over the entire area of the first insulating layer 224a. Each of the first insulating layer 224a and the second insulating layer 224b is formed of, for example, a silicon nitride (SiN) film.
[0039] The distance adjustment layer 225 is a layer having optical transparency and insulation properties for adjusting the distance between the reflective layer 222 and the common electrode 229 for each subpixel P0. The distance adjustment layer 225 has a first distance adjustment layer 225a and a second distance adjustment layer 225b. Each of the first distance adjustment layer 225a and the second distance adjustment layer 225b is composed of, for example, a silicon oxide film.
[0040] The first distance adjustment layer 225a is disposed in the subpixel PR among the subpixels PR, PG, and PB, but is not disposed in the subpixels PG and PB. The second distance adjustment layer 225b is disposed in the subpixels PR and PG among the subpixels PR, PG, and PB, but is not disposed in the subpixel PB. Therefore, the first distance adjustment layer 225a and the second distance adjustment layer 225b are disposed in the subpixel PR. The second distance adjustment layer 225b among the first distance adjustment layer 225a and the second distance adjustment layer 225b is disposed in the subpixel PG. Neither the first distance adjustment layer 225a nor the second distance adjustment layer 225b is disposed in the subpixel PB.
[0041] Each of the pixel electrodes 226R, 226G, and 226B is a layer that is provided for each sub-pixel P0 and has electrical conductivity and optical transparency. Examples of the material that constitutes each of the pixel electrodes 226R, 226G, and 226B include transparent conductive materials such as ITO (Indium Tin Oxide) and IZO (Indium Zinc Oxide).
[0042] The pixel electrode 226R is a pixel electrode 226 provided in the sub-pixel PR. The pixel electrode 226G is a pixel electrode 226 provided in the sub-pixel PG. The pixel electrode 226B is a pixel electrode 226 provided in the sub-pixel PB. The pixel electrode 226R is an example of a "first pixel electrode." The pixel electrode 226G is an example of a "second pixel electrode."
[0043] The element isolation layer 227 is an insulating layer covering the outer edges of each of the pixel electrodes 226R, 226G, and 226B. The element isolation layer 227 is made of an insulating material such as silicon oxide. The element isolation layer 227 has a plurality of openings for contacting predetermined regions of the pixel electrodes 226R, 226G, and 226B with the organic layer 228. The plurality of openings define light-emitting regions RR, RG, and RB.
[0044] Here, the contact area between the pixel electrode 226R and the organic layer 228 is equal to the light-emitting area RR in a planar view. Similarly, the contact area between the pixel electrode 226G and the organic layer 228 is equal to the light-emitting area RG in a planar view. The contact area between the pixel electrode 226B and the organic layer 228 is equal to the light-emitting area RB in a planar view.
[0045] The organic layer 228 is a layer mainly composed of an organic compound. Specifically, the organic layer 228 includes a light-emitting layer that emits light when an electric current is applied. In this embodiment, the light-emitting layer includes, for example, a light-emitting layer that emits red light, a light-emitting layer that emits green light, and a light-emitting layer that emits blue light, which are appropriately stacked. Therefore, the organic layer 228 realizes emission of white light or a color similar thereto. The organic layer 228 can be configured and made of a known material. Although not shown, the organic layer 228 includes a hole injection layer, a hole transport layer, an electron transport layer, an electron injection layer, or the like as necessary, in addition to the light-emitting layer. The organic layer 228 may also include a layer composed of an inorganic material such as a metal as necessary.
[0046] The common electrode 229 is a layer that is provided in common to the sub-pixels PR, PG, and PB and has light reflectivity, light transparency, and conductivity. Examples of materials that make up the common electrode 229 include alloys containing Ag, such as MgAg. Note that, of the common electrode 229, the portion that corresponds to the sub-pixel PR is an example of a "first electrode," and the portion that corresponds to the sub-pixel PB is an example of a "second electrode."
[0047] In the light emitting element layer 220 described above, the light emitting element 120R has an insulating layer 221, a reflective layer 222, a reflective layer 223, an insulating layer 224, a first distance adjustment layer 225a, a second distance adjustment layer 225b, a pixel electrode 226R, an element isolation layer 227, an organic layer 228, and a common electrode 229. The light emitting element 120G has a layer structure similar to that of the light emitting element 120R, except that the first distance adjustment layer 225a is omitted and a pixel electrode 226G is provided instead of the pixel electrode 226R. The light emitting element 120B has a layer structure similar to that of the light emitting element 120R, except that the first distance adjustment layer 225a and the second distance adjustment layer 225b are omitted and a pixel electrode 226B is provided instead of the pixel electrode 226R.
[0048] Here, the distance between the reflective layer 222 and the common electrode 229 varies for each sub-pixel P0. Specifically, the distance in the sub-pixel PR is a distance L0R set corresponding to the red wavelength range. The distance in the sub-pixel PG is a distance L0G set corresponding to the green wavelength range. The distance in the sub-pixel PB is a distance L0B set corresponding to the blue wavelength range.
[0049] For this reason, in the sub-pixel PR, an optical resonant structure that resonates light of a red wavelength between the reflective layer 222 and the common electrode 229 is realized. In the sub-pixel PG, an optical resonant structure that resonates light of a green wavelength between the reflective layer 222 and the common electrode 229 is realized. In the sub-pixel PB, an optical resonant structure that resonates light of a blue wavelength between the reflective layer 222 and the common electrode 229 is realized.
[0050] The resonant wavelength in the optical resonant structure described above is determined by the distance between the reflective layer 222 and the common electrode 229. When the distance is L0 and the resonant wavelength is λ0, the following relational expression [1] holds. Note that Φ (radian) in relational expression [1] represents the sum of phase shifts occurring during transmission and reflection between the reflective layer 222 and the common electrode 229. {(2×L0) / λ0+Φ} / (2π)=m0 (m0 is an integer) [1]
[0051] The optical distance L0 is set so that the peak wavelength of the light in the desired wavelength range is the wavelength λ0. This setting enhances the light in the desired wavelength range, thereby increasing the intensity of the light and narrowing its spectrum.
[0052] As described above, in this embodiment, the optical distance L0 is adjusted by varying the thickness of the distance adjustment layer 225 for each sub-pixel P0. Note that the method of adjusting the optical distance L0 is not limited to the method using the thickness of the distance adjustment layer 225. For example, the optical distance L0 may be adjusted by varying the thickness of the pixel electrode 226 for each of the sub-pixels PB, PG, and PR.
[0053] The sealing layer 230 is a layer having gas barrier properties and light transmission properties that seals the light emitting element layer 220 to protect it from external moisture, oxygen, and the like. Specifically, the sealing layer 230 has a first layer 231, a second layer 232, and a third layer 233. These layers are stacked in this order in the Z1 direction. Each of the first layer 231 and the third layer 233 is a layer having light transmission properties for enhancing the gas barrier properties. Each of the first layer 231 and the third layer 233 is composed of, for example, a silicon oxynitride (SiON) film. The second layer 232 is a layer having light transmission properties for providing the third layer 233 with a flat surface. The second layer 232 is composed of, for example, a resin material such as an epoxy resin.
[0054] The adhesion layer 240 is a light-transmitting layer for enhancing adhesion between the sealing layer 230 and the light shielding portion 250. The adhesion layer 240 is made of a resin material such as an epoxy resin. The thickness of the adhesion layer 240 is not particularly limited and may be any thickness.
[0055] The light-shielding portion 250 is a light-shielding layer for blocking unwanted light from the light-emitting regions RR, RG, and RB. Here, the light-shielding portion 250 has a first surface F1 facing in the Z2 direction and a second surface F2 facing in the Z1 direction.
[0056] The light shielding portion 250 preferably has not only light shielding properties but also light absorbing properties or anti-reflection properties, and is made of a resin material such as an acrylic photosensitive resin material containing a coloring material such as a pigment or dye. The coloring material may be capable of shielding the light from each of the light emitting regions RR, RG, and RB, but from the viewpoint of enhancing the light shielding properties, it is preferable that the color of the light shielding portion 250 is black or a dark color close to black. Examples of the coloring material that makes the color of the light shielding portion 250 black or a dark color close to black include a black coloring material such as carbon black, and a coloring material that is a mixture of multiple coloring materials such as red, blue, and green.
[0057] In this embodiment, the light shielding portion 250 has a plurality of first light shielding portions 251 , a plurality of second light shielding portions 252 , a plurality of third light shielding portions 253 , and a plurality of fourth light shielding portions 254 .
[0058] 3, each of the first light-shielding portion 251 and the second light-shielding portion 252 has a strip shape extending in a direction along the X-axis in a plan view. Here, the first light-shielding portion 251 overlaps, in a plan view, a region between the light-emitting region RR and the light-emitting region RB adjacent to each other in the same pixel P and a contact portion 226a (described later) of the light-emitting element 120B. The second light-shielding portion 252 overlaps, in a plan view, a region between the light-emitting region RR and the light-emitting region RB adjacent to each other in different pixels P, a region between the light-emitting regions RG adjacent to each other in different pixels P, and the contact portions 226a of the light-emitting elements 120R and 120G.
[0059] In contrast, each of the third light-shielding portion 253 and the fourth light-shielding portion 254 has a strip shape extending in the direction along the Y-axis in a plan view. Here, the third light-shielding portion 253 overlaps, in a plan view, a region between the light-emitting region RR and the light-emitting region RG adjacent to each other in the same pixel P, and a region between the light-emitting region RB and the light-emitting region RG adjacent to each other in the same pixel P. The fourth light-shielding portion 254 overlaps, in a plan view, a region between the light-emitting region RR and the light-emitting region RG adjacent to each other in different pixels P, and a region between the light-emitting region RB and the light-emitting region RG adjacent to each other in different pixels P.
[0060] In the example shown in Fig. 3, the widths of the first light-shielding portion 251 and the second light-shielding portion 252 in the direction along the Y axis are constant over the entire area in the direction along the X axis. The widths of the first light-shielding portion 251 and the second light-shielding portion 252 in the direction along the Y axis are equal to each other. The widths of the first light-shielding portion 251 and the second light-shielding portion 252 in the direction along the Y axis do not have to be constant over the entire area in the direction along the X axis, and may be partially thicker or thinner. The widths of the first light-shielding portion 251 and the second light-shielding portion 252 in the direction along the Y axis may be different from each other.
[0061] Similarly, the widths of the third light-shielding portion 253 and the fourth light-shielding portion 254 in the direction along the X-axis are constant over the entire area in the direction along the Y-axis. Furthermore, the widths of the third light-shielding portion 253 and the fourth light-shielding portion 254 in the direction along the X-axis are equal to each other. Note that the widths of the third light-shielding portion 253 and the fourth light-shielding portion 254 in the direction along the X-axis do not have to be constant over the entire area in the direction along the Y-axis, and may be partially thicker or thinner. Furthermore, the widths of the third light-shielding portion 253 and the fourth light-shielding portion 254 in the direction along the X-axis may be different from each other.
[0062] In this embodiment, as shown in Fig. 4 and Fig. 5, each of the third light-shielding portion 253 and the fourth light-shielding portion 254 is trapezoidal in shape with a width that decreases in the Z2 direction when viewed in a cross section perpendicular to the Y axis. Similarly, as shown in Fig. 6, the second light-shielding portion 252 is trapezoidal in shape with a width that decreases in the Z2 direction when viewed in a cross section perpendicular to the X axis. Although not shown, the first light-shielding portion 251 is trapezoidal in shape with a width that decreases in the Z2 direction when viewed in a cross section perpendicular to the X axis.
[0063] The cross section, which is a cross section perpendicular to the length direction of each of the first light-shielding portion 251, the second light-shielding portion 252, the third light-shielding portion 253, and the fourth light-shielding portion 254 as described above, has a side based on the first surface F1 and a side based on the second surface F2. In the cross section, the length of the side based on the first surface F1 is shorter than the length of the side based on the second surface F2. Therefore, it is possible to increase the viewing angle of each sub-pixel P0 while blocking abnormal light emission near the periphery of each light-emitting region. The light-shielding portion 250 having such a cross-sectional shape is formed by using, for example, a negative photosensitive resin material as a constituent material.
[0064] The cross-sectional shape of the light-shielding portion 250 is not limited to a shape in which the width decreases continuously in the Z2 direction, and may be a shape in which the width decreases stepwise in the Z2 direction. The cross-sectional shape of the light-shielding portion 250 may be a rectangle or a trapezoid whose width decreases in the Z1 direction.
[0065] The light-shielding portion 250 is provided with a first opening 255R overlapping the light-emitting region RR in a plan view, a second opening 255B overlapping the light-emitting region RB in a plan view, and a third opening 255G overlapping the light-emitting region RG in a plan view. Therefore, light from each of the corresponding light-emitting regions can be emitted to the outside of the element substrate 200 through each of these openings.
[0066] The resin layer 260 is a light-transmitting layer that covers the light-shielding portion 250 so as to fill each opening of the light-shielding portion 250. Here, the resin layer 260 has a third surface F3 facing the Z2 direction and a fourth surface F4 facing the Z1 direction. The resin layer 260 is substantially colorless and transparent, and is made of a resin material such as an acrylic-based photosensitive resin material that does not substantially contain a coloring material. The term "substantially colorless and transparent" is a concept that includes not only completely colorless and transparent, but also transparency that is colored to an extent that is unavoidable in manufacturing. Since the resin layer 260 is substantially transparent, the loss of light that passes through each opening of the light-shielding portion 250 can be reduced.
[0067] Here, the resin layer 260 is a flattening layer for smoothing the unevenness caused by the light shielding portion 250. Therefore, the surface of the resin layer 260 facing the Z2 direction has a shape that conforms to the light shielding portion 250, whereas the fourth surface F4 of the resin layer 260 facing the Z1 direction is a substantially flat surface. The term "substantially flat surface" is a concept that includes not only a flat surface, but also a substantially flat surface that is considered to be a flat surface. By providing such a resin layer 260, it is possible to improve the adhesion between the element substrate 200 and the light-transmitting substrate 300 and reduce unintended reflection at the interface between these substrates.
[0068] Here, the contact portion 226a will be described with reference to FIG. 6. As shown in FIG. 6, a relay electrode 271 is disposed between the first insulating layer 224a and the second insulating layer 224b of the insulating layer 224, and the pixel electrode 226 has a contact portion 226a that penetrates the distance adjustment layer 225 and connects to the relay electrode 271. The relay electrode 271 is an electrode for electrically connecting the pixel electrode 226 to the pixel circuit 130, and is electrically connected to the reflective layer 222. The relay electrode 271 is provided for each light-emitting element 120, and is disposed at a position that does not overlap the light-emitting regions RR, RG, and RB in a planar view. Examples of materials that constitute the relay electrode 271 include conductive materials such as tungsten (W), titanium (Ti), and titanium nitride (TiN).
[0069] In the example shown in Fig. 6, an insulating layer 272 is disposed between the relay electrode 271 and the first insulating layer 224a, and the relay electrode 271 penetrates the insulating layer 272 and the first insulating layer 224a to be connected to the reflective layer 222. The insulating layer 272 is made of, for example, a silicon oxide film. Note that, although Fig. 6 representatively illustrates the pixel electrode 226 and the relay electrode 271 of the light-emitting element 120G, the pixel electrodes 226 and the relay electrodes 271 of the light-emitting elements 120R and 120B are configured in the same manner as the pixel electrode 226 and the relay electrode 271 of the light-emitting element 120G.
[0070] Here, the relay electrode 271 corresponding to the light-emitting element 120R is an example of a "first relay electrode." The relay electrode 271 corresponding to the light-emitting element 120G is an example of a "second relay electrode." Moreover, the contact portion 226a of the pixel electrode 226 of the light-emitting element 120R is an example of a "first contact portion." The contact portion 226a of the pixel electrode 226 of the light-emitting element 120G is an example of a "second contact portion."
[0071] In the configuration in which the relay electrode 271 is provided as described above, the thickness of the organic layer 228 tends to be thin near the periphery of each light-emitting region due to the step caused by the contact portion 226a and the element isolation layer 227. Therefore, when the light-emitting element 120 is driven with a low current, the periphery of each light-emitting region tends to emit light preferentially compared to the center. Such light emission near the periphery of each light-emitting region resonates at a frequency different from the intended resonance frequency in the optical resonance structure described above, causing color shift. Therefore, it is desirable to block such light emission by the light-shielding portion 250. In particular, when the electro-optical device 100 is used as a microdisplay, the pixel is small, so the ratio of the periphery to the original light-emitting region becomes large, and the ratio of the amount of abnormal light emission that causes the above-mentioned color shift becomes large compared to the amount of normal light emission, so it is desirable to block the abnormal light emission.
[0072] The abnormal light emission described above tends to be red because it resonates over an optical distance that is longer by the thickness of the element isolation layer 227. In addition, as the thickness of the organic layer 228 becomes thinner, the transfer of excitation energy within the organic layer 228 tends to occur, and in this respect as well, the abnormal light emission described above tends to be red.
[0073] 1-3. Function of the light shielding part 250 7 is a diagram showing the results of a simulation for explaining the effect of the light shielding portion 250. In FIG. 7, the results of a simulation of the luminance efficiency, color gamut, and luminance viewing angle are shown for the electro-optical devices of Example 1 and Comparative Examples 1 to 3. The luminance efficiency indicates the efficiency of white luminance with respect to the input current. The color gamut indicates the area ratio with respect to the sRGB color gamut. The luminance viewing angle indicates the ratio of luminance at a viewing angle of 20° with respect to the luminance from the front.
[0074] Here, the electro-optical device of Example 1 is the aforementioned electro-optical device 100. The electro-optical device of Comparative Example 1 is similar to the aforementioned electro-optical device 100, except that the light-shielding portion 250 is omitted. The electro-optical device of Comparative Example 2 is similar to the aforementioned electro-optical device 100, except that the light-shielding portion 250 is omitted and a color filter is added. The electro-optical device of Comparative Example 3 is similar to the aforementioned electro-optical device 100, except that a color filter is added.
[0075] As shown in FIG. 7, in Example 1, a color gamut close to those of Comparative Examples 2 and 3 can be achieved, while a luminance efficiency and a luminance viewing angle close to those of Comparative Example 1 can be achieved.
[0076] 1-4. Summary of embodiments As described above, the electro-optical device 100 includes the light-emitting element 120R, which is an example of the "first light-emitting element," the light-emitting element 120B, which is an example of the "second light-emitting element," and the light-shielding portion 250. The light-emitting element 120R includes a common electrode 229, which is an example of the "first electrode," and a reflective layer 222R, which is an example of the "first reflective layer." The reflective layer 222R is disposed at a position where the optical distance L0 between the common electrode 229 and the reflective layer 222R is a first optical distance. The light-emitting element 120B includes a common electrode 229, which is an example of a "second electrode integrally provided with the first electrode," and a reflective layer 222B, which is an example of the "second reflective layer." The reflective layer 222B is disposed at a position where the optical distance L0 between the common electrode 229 and the reflective layer 222B is a second optical distance different from the first optical distance. The light-shielding portion 250 is disposed between the light-emitting region RR of the light-emitting element 120R and the light-emitting region RB of the light-emitting element 120B in a plan view.
[0077] Moreover, the layer in contact with the light blocking portion 250 is substantially colorless and transparent. In particular, in the electro-optical device 100, no colored layer such as a color filter overlaps the light emitting region RR and the light emitting region RB in plan view.
[0078] In the electro-optical device 100 described above, the light-emitting element 120R emits light in a wavelength range corresponding to the first optical distance due to resonance between the common electrode 229 and the reflective layer 222R. The light-emitting element 120B emits light in a wavelength range corresponding to the second optical distance due to resonance between the second electrode and the reflective layer 222B. In addition, the light-shielding portion 250 can block abnormal light emission near the outer periphery of the light-emitting region of each of the light-emitting elements 120R and 120B. Therefore, even if the layer in contact with the light-shielding portion 250 is substantially colorless and transparent, light in a desired wavelength range can be extracted from each of the light-emitting elements 120R and 120B through the layer without providing a color filter. In this way, there is no need to provide a color filter that causes luminance attenuation when extracting light from each of the light-emitting elements 120R and 120B, so light in a desired wavelength range can be efficiently extracted from each of the light-emitting elements 120R and 120B.
[0079] As described above, the light-shielding portion 250 has a first opening 255R overlapping with the light-emitting region RR of the light-emitting element 120R in a planar view, and a second opening 255B overlapping with the light-emitting region RB of the light-emitting element 120B in a planar view. A substantially colorless and transparent resin layer 260 is provided in each of the first opening 255R and the second opening 255B. The resin layer 260 is an example of a layer in contact with the light-shielding portion 250.
[0080] As described above, the light-shielding portion 250 has a first surface F1 and a second surface F2 opposite to the first surface F1. The first surface F1 is located between the second surface F2 and the common electrode 229. The cross section of the light-shielding portion 250 has a side based on the first surface F1 and a side based on the second surface F2. Here, the length W1 of the side based on the first surface F1 is shorter than the length W2 of the side based on the second surface F2. Therefore, the viewing angle characteristics can be improved compared to a configuration in which the length W1 of the side based on the first surface F1 is longer than the length W2 of the side based on the second surface F2.
[0081] Here, as described above, the electro-optical device 100 includes the relay electrodes 271 and the insulating layer 272 of the light-emitting elements 120R and 120G. The light-emitting element 120R has a pixel electrode 226R as an example of a "first pixel electrode", and the relay electrode 271 as an example of a "first relay electrode" is electrically connected to the pixel electrode 226R. The light-emitting element 120G has a pixel electrode 226G as an example of a "second pixel electrode", and the relay electrode 271 as an example of a "second relay electrode" is electrically connected to the pixel electrode 226G. The insulating layer 272 is provided between the pixel electrode 226R and the relay electrode 271 as the first relay electrode, and between the pixel electrode 226G and the relay electrode 271 as the second relay electrode. The pixel electrode 226R has a contact portion 226a as a first contact portion that penetrates the insulating layer 272 and is electrically connected to the relay electrode 271 as the first relay electrode. The pixel electrode 226G has a contact portion 226a as a second contact portion that penetrates the insulating layer 272 and is electrically connected to the relay electrode 271 as a second relay electrode. The second face F2 includes the contact portion 226a as the first contact portion and the contact portion 226a as the second contact portion in a plan view. Therefore, the viewing angle characteristics can be improved while the light shielding portion 250 shields abnormal light emission near the contact portion 226a of each of the light emitting elements 120R and 120B.
[0082] As described above, the resin layer 260 has a third surface F3 and a fourth surface F4 opposite to the third surface F3. The third surface F3 is located between the fourth surface F4 and the common electrode 229. The resin layer 260 covers the light-shielding portion 250, and the fourth surface F4 is a flat surface. In this manner, the resin layer 260 is a flattening layer for mitigating and flattening the unevenness caused by the light-shielding portion 250. For this reason, the resin layer 260 and the light-transmitting substrate 300 for covering can be appropriately bonded to each other.
[0083] As described above, the electro-optical device 100 also includes the sealing layer 230 and the adhesion layer 240. The sealing layer 230 is disposed between the common electrode 229 and the second electrode, and the light shielding portion 250. The adhesion layer 240 is disposed between the sealing layer 230 and the light shielding portion 250 in contact with the light shielding portion 250, and contains a resin. This makes it possible to increase the bonding strength between the light shielding portion 250 and the sealing layer 230.
[0084] As described above, the distance between the light-emitting region RR of the light-emitting element 120R and the light-emitting region RB of the light-emitting element 120B in a plan view is smaller than the thickness t of the sealing layer 230. The shorter the pixel pitch, the greater the influence of abnormal light emission near the periphery of the light-emitting region on normal light emission. In particular, in a configuration in which the pixel pitch is short such that the distance between the light-emitting region RR of the light-emitting element 120R and the light-emitting region RB of the light-emitting element 120B in a plan view is smaller than the thickness of the sealing layer, the influence of abnormal light emission near the periphery of the light-emitting region on normal light emission becomes significant. Therefore, in such a case, it is desirable to block the abnormal light emission by the light-shielding portion 250.
[0085] 2. Variations Each of the embodiments exemplified above can be modified in various ways. Specific modified aspects that can be applied to each of the above embodiments are exemplified below. Two or more aspects arbitrarily selected from the following examples can be appropriately combined to the extent that they are not mutually contradictory. In addition, each modified aspect of the first embodiment shown below can be appropriately applied to the second embodiment to the extent that they are not mutually contradictory.
[0086] 2-1. Variation 1 Fig. 8 is a plan view of an element substrate 200A in Modification 1. Fig. 8 representatively illustrates a light shielding portion 250A (described later) and elements related thereto for one pixel P among the elements constituting the element substrate 200A.
[0087] The element substrate 200A of the first modification is similar to the element substrate 200 of the above embodiment, except that the arrangement and shape in plan view of the light emitting elements 120R, 120G, and 120B are different, and the light shielding portion 250 is replaced with a light shielding portion 250A.
[0088] The light emitting elements 120R, 120G, and 120B of the first modification are arranged in a stripe array along the X-axis for each pixel P. The light emitting elements 120R, 120G, and 120B have the same configuration except for the optical distance L0. In the example shown in FIG. 8, the light emitting region RR of the light emitting element 120R, the light emitting region RG of the light emitting element 120G, and the light emitting region RB of the light emitting element 120B each form a rectangle extending in the Y-axis direction in a plan view. The contact portion 226a is disposed at a position in the Y1 direction relative to these light emitting regions.
[0089] Here, the light-shielding portion 250A overlaps the region between the light-emitting regions and each of the contact portions 226a in a plan view. Such light-shielding portion 250A is provided with a rectangular first opening 255R overlapping the light-emitting region RR in a plan view, a rectangular second opening 255B overlapping the light-emitting region RB in a plan view, and a rectangular third opening 255G overlapping the light-emitting region RG in a plan view. With the above-described first modification, as with the electro-optical device 100 described above, it is possible to efficiently extract light in a desired wavelength range.
[0090] 2-2. Variation 2 Fig. 9 is a plan view of the element substrate 200B in Modification 2. Fig. 9 representatively illustrates a light-shielding portion 250B (described later) and related elements for one pixel P among the elements constituting the element substrate 200B. Note that, although the contact portion 226a is not illustrated in Fig. 9, the contact portion 226a is disposed at a position that does not overlap with the light-emitting regions RR, RG, and RB in a plan view.
[0091] The element substrate 200B of the second modification is similar to the element substrate 200 of the above embodiment, except that the arrangement and shape in plan view of the light emitting elements 120R, 120G, and 120B are different, and the light shielding portion 250 is replaced with a light shielding portion 250B.
[0092] The light emitting elements 120R, 120G, and 120B of the second modification are arranged in a delta arrangement. The light emitting elements 120R, 120G, and 120B have the same configuration except for the optical distance L0. Although not shown, the light emitting region RR of the light emitting element 120R, the light emitting region RG of the light emitting element 120G, and the light emitting region RB of the light emitting element 120B each form a hexagon in a plan view.
[0093] Here, the light-shielding portion 250B overlaps the region between the light-emitting regions in a plan view. Such light-shielding portion 250B is provided with a circular first opening 255R overlapping the light-emitting region RR in a plan view, a circular second opening 255B overlapping the light-emitting region RB in a plan view, and a circular third opening 255G overlapping the light-emitting region RG in a plan view. As with the electro-optical device 100 described above, the above-described second modification also makes it possible to efficiently extract light in a desired wavelength range.
[0094] The arrangement of the light emitting regions RR, RG, RB is not limited to the above-mentioned delta arrangement and stripe arrangement, but may be any arrangement, for example, a rectangular arrangement or a Bayer arrangement.
[0095] 2-3. Variation 3 In the above embodiment, the light-emitting element 120R is the "first light-emitting element" and the light-emitting element 120G is the "second light-emitting element", but the light-emitting element 120B may be regarded as the "second light-emitting element". Furthermore, the light-emitting element 120G or the light-emitting element 120B may be regarded as the "first light-emitting element". When the light-emitting element 120G is regarded as the "first light-emitting element", the light-emitting element 120R or the light-emitting element 120B is an example of the "second light-emitting element". When the light-emitting element 120B is regarded as the "first light-emitting element", the light-emitting element 120R or the light-emitting element 120G is an example of the "second light-emitting element".
[0096] 3.Electronic equipment The electro-optical device 100 of the above-described embodiment can be applied to various electronic devices.
[0097] 3-1. Head-mounted display Fig. 10 is a diagram showing a virtual image display device 700 as an example of an electronic device. The virtual image display device 700 shown in Fig. 10 is a head mounted display (HMD) that is worn on the head of a viewer to display an image. The virtual image display device 700 includes the electro-optical device 100 described above, a collimator 71, a light guide 72, a first reflective volume hologram 73, a second reflective volume hologram 74, and a control unit 79. The light emitted from the electro-optical device 100 is emitted as image light LL. The electro-optical device 100 can be applied with the configurations of each of the above-mentioned forms or modified examples.
[0098] The control unit 79 includes, for example, a processor and a memory, and controls the operation of the electro-optical device 100. The collimator 71 is disposed between the electro-optical device 100 and the light guide 72. The collimator 71 converts the light emitted from the electro-optical device 100 into parallel light. The collimator 71 is composed of a collimator lens and the like. The light converted into parallel light by the collimator 71 enters the light guide 72.
[0099] The light guide 72 is flat and extends in a direction intersecting the direction of the light incident through the collimator 71. The light guide 72 reflects and guides the light inside. A light inlet through which the light enters and a light outlet through which the light exits are provided on a surface 721 of the light guide 72 facing the collimator 71. A first reflection type volume hologram 73 as a diffractive optical element and a second reflection type volume hologram 74 as a diffractive optical element are provided on a surface 722 opposite to the surface 721 of the light guide 72. The first reflection type volume hologram 73 is provided closer to the light outlet side than the second reflection type volume hologram 74. The first reflection type volume hologram 73 and the second reflection type volume hologram 74 have interference fringes corresponding to a predetermined wavelength range and diffract and reflect light in the predetermined wavelength range.
[0100] In a virtual image display device 700 having such a configuration, the image light LL that enters the light guide 72 from the light inlet is repeatedly reflected and guided from the light outlet to the observer's pupil EY, allowing the observer to observe an image composed of a virtual image formed by the image light LL.
[0101] The above-described virtual image display device 700 includes the electro-optical device 100 and a control unit 79 that controls the operation of the electro-optical device 100. Therefore, it is possible to provide a virtual image display device 700 with better light distribution characteristics than conventional devices.
[0102] The virtual image display device 700 may include a combining element such as a dichroic prism that combines the light emitted from the electro-optical device 100. In that case, the virtual image display device 700 may include, for example, an electro-optical device 100 that emits light in a blue wavelength range, an electro-optical device 100 that emits light in a green wavelength range, and an electro-optical device 100 that emits light in a red wavelength range.
[0103] 3-2.Personal Computers Fig. 11 is a perspective view showing a personal computer 400, which is an example of an electronic device. The personal computer 400 shown in Fig. 11 includes the electro-optical device 100, a main body 403 provided with a power switch 401 and a keyboard 402, and a control unit 409. The control unit 409 includes, for example, a processor and a memory, and controls the operation of the electro-optical device 100. The personal computer 400 is excellent in quality since it includes the electro-optical device 100 described above. Note that the electro-optical device 100 can be applied with the configurations of each of the above-mentioned embodiments or modifications.
[0104] Examples of "electronic devices" equipped with the electro-optical device 100 include the virtual image display device 700 illustrated in Fig. 10 and the personal computer 400 illustrated in Fig. 11, as well as devices placed close to the eyes, such as digital scopes, digital binoculars, digital still cameras, and video cameras. "Electronic devices" equipped with the electro-optical device 100 are used as mobile phones, smartphones, PDAs (Personal Digital Assistants), car navigation devices, and in-vehicle display units. "Electronic devices" equipped with the electro-optical device 100 are also used as lighting that emits light.
[0105] Although the present invention has been described above based on the illustrated embodiments, the present invention is not limited to these. Furthermore, the configuration of each part of the present invention can be replaced with any configuration that exerts the same function as the above-mentioned embodiment, and any configuration can be added. Furthermore, the present invention may be configured to combine any configuration of each of the above-mentioned embodiments. [Explanation of symbols]
[0106] 71...collimator, 72...light guide, 73...first reflection type volume hologram, 74...second reflection type volume hologram, 79...control unit, 100...electro-optical device, 101...data line driving circuit, 102...scanning line driving circuit, 103...control circuit, 104...external terminal, 111...scanning line, 112...data line, 113...power supply line, 114...power supply line, 120...light-emitting element, 120B...light-emitting element (second light-emitting element), 120G...light-emitting element, 120R...light-emitting element (first light-emitting element), 130...pixel circuit, 131...switching transistor, 132...driving transistor Star, 133...storage capacitance, 200...element substrate, 200A...element substrate, 200B...element substrate, 210...substrate, 220...light emitting element layer, 221...insulating layer, 222...reflective layer, 222B...reflective layer (second reflective layer), 222G...reflective layer, 222R...reflective layer (first reflective layer), 223...enhanced reflective layer, 224...insulating layer, 224a...first insulating layer, 224b...second insulating layer, 225...distance adjustment layer, 225a...first distance adjustment layer, 225b...second distance adjustment layer, 226...pixel electrode, 226B...pixel electrode, 226G...pixel electrode, 226R...pixel electrode, 226a...con Contact portion, 227...element isolation layer, 228...organic layer, 229...common electrode (first electrode, second electrode), 230...sealing layer, 231...first layer, 232...second layer, 233...third layer, 240...adhesion layer, 250...light shielding portion, 250A...light shielding portion, 250B...light shielding portion, 251...first light shielding portion, 252...second light shielding portion, 253...third light shielding portion, 254...fourth light shielding portion, 255B...second opening, 255G...third opening, 255R...first opening, 260...resin layer, 271...relay electrode, 272...insulating layer, 300...light-transmitting substrate, 400...personal computer, 401 ...power switch, 402...keyboard, 403...main body, 409...control unit, 700...virtual image display device, 721...surface, 722...surface, A10...display area, A20...peripheral area, EY...pupil, F1...first surface, F2...second surface, F3...third surface, F4...fourth surface, L0B...distance, L0G...distance, L0R...distance, LL...image light, LLB...light, LLG...light, LLR...light, P...pixel, P0...subpixel, PB...subpixel, PG...subpixel, PR...subpixel, RB...light-emitting area, RG...light-emitting area, RR...light-emitting area, Vct...power supply potential, Vel...power supply potential, t...thickness.
Claims
1. a first light-emitting element including a first electrode and a first reflective layer disposed at a position where an optical distance between the first electrode and the first reflective layer is a first optical distance; a second light-emitting element including a second electrode provided integrally with the first electrode, and a second reflective layer disposed at a position where an optical distance between the second electrode and a second reflective layer is a second optical distance different from the first optical distance; a light-shielding portion disposed between the light-emitting region of the first light-emitting element and the light-emitting region of the second light-emitting element in a plan view; the light-shielding portion has a first opening overlapping a light-emitting region of the first light-emitting element in a plan view and a second opening overlapping a light-emitting region of the second light-emitting element in a plan view; A substantially colorless and transparent resin layer is provided in contact with the light-shielding portion in each of the first opening and the second opening. Electro-optical device.
2. The light blocking portion has a first surface and a second surface opposite to the first surface, the first surface is located between the second surface and the first electrode or the second electrode, a transverse cross section of the light-shielding portion has a side based on the first surface and a side based on the second surface, a length of a side based on the first surface is shorter than a length of a side based on the second surface; 2. The electro-optical device according to claim 1.
3. a first relay electrode electrically connected to a first pixel electrode of the first light emitting element; a second relay electrode electrically connected to a second pixel electrode of the second light emitting element; an insulating layer provided between the first pixel electrode and the first relay electrode and between the second pixel electrode and the second relay electrode; the first pixel electrode has a first contact portion that penetrates the insulating layer and is electrically connected to the first relay electrode; the second pixel electrode has a second contact portion that penetrates the insulating layer and is electrically connected to the second relay electrode; the second surface encompasses the first contact portion and the second contact portion in a plan view; 3. The electro-optical device according to claim 2.
4. The resin layer has a third surface and a fourth surface opposite to the third surface, the third surface is located between the fourth surface and the first electrode or the second electrode, the resin layer covers the light-shielding portion, The fourth surface is a flat surface. The electro-optical device according to claim 1 .
5. a sealing layer disposed between the first electrode and the second electrode and the light-shielding portion; An adhesion layer including a resin is disposed between the sealing layer and the light-shielding portion and in contact with the light-shielding portion. The electro-optical device according to claim 1 .
6. a distance between a light emitting region of the first light emitting element and a light emitting region of the second light emitting element in a plan view is smaller than a thickness of the sealing layer; 6. The electro-optical device according to claim 5.
7. a first light-emitting element including a first electrode and a first reflective layer disposed at a position where an optical distance between the first electrode and the first reflective layer is a first optical distance; a second light-emitting element including a second electrode provided integrally with the first electrode, and a second reflective layer disposed at a position where an optical distance between the second electrode and a second reflective layer is a second optical distance different from the first optical distance; a light-shielding portion disposed between a light-emitting region of the first light-emitting element and a light-emitting region of the second light-emitting element in a plan view; a first relay electrode electrically connected to a first pixel electrode of the first light emitting element; a second relay electrode electrically connected to a second pixel electrode of the second light emitting element; an insulating layer provided between the first pixel electrode and the first relay electrode and between the second pixel electrode and the second relay electrode; the light-shielding portion has a first opening overlapping a light-emitting region of the first light-emitting element in a plan view and a second opening overlapping a light-emitting region of the second light-emitting element in a plan view; a substantially colorless and transparent resin layer is provided in contact with the light-shielding portion in each of the first opening and the second opening, the first pixel electrode has a first contact portion that penetrates the insulating layer and is electrically connected to the first relay electrode; the second pixel electrode has a second contact portion that penetrates the insulating layer and is electrically connected to the second relay electrode; the light-shielding portion includes the first contact portion and the second contact portion in a plan view, Electro-optical device.
8. The electro-optical device according to claim 1 , A control unit for controlling the operation of the electro-optical device. electronic equipment.
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