Patent Publication Number: US-2022238844-A1

Title: Electro-optical device and electronic apparatus

Description:
The present application is based on, and claims priority from JP Application Serial Number 2021-011753, filed Jan. 28, 2021, the disclosure of which is hereby incorporated by reference herein in its entirety. 
     BACKGROUND 
     1. Technical Field 
     The present disclosure relates to an electro-optical device and an electronic apparatus. 
     2. Related Art 
     Recently, an electro-optical device is known that includes a light emitting element such as an organic EL (electroluminescence) element and a color filter that transmits a predetermined wavelength region of light emitted from the light emitting element. Some such electro-optical devices include a light resonance structure that resonates light emitted from the light emitting element. 
     For example, JP-A-2019-29188 discloses an electro-optical device in which ore display unit is constituted by a pixel constituted of a plurality of sub-pixels, and a pixel electrode and a reflection layer are electrically coupled via a contact electrode in a light emitting element corresponding to a sub-pixel. In the electro-optical device, the film thicknesses of a first distance adjustment layer and a second distance adjustment layer are adjusted so as to form a light resonance structure that resonates light in a predetermined wavelength region by a reflection layer and a counter electrode. 
     However, in the electro-optical device described in JP-A-2019-29188, there is a problem in that it is difficult to improve the sealing performance of the red and green sub-pixels as compared to the blue sub-pixel. The factor that is difficult to improve the sealing performance is, for example, a thickness of a lower side sealing layer above a contact portion where the contact electrode and the reflection layer come into contact. Specifically, when a width of the contact portion is increased in order to sufficiently ensure a contact portion between the contact electrode and the reflection layer, the upper layer drops inside the contact portion and also results in a recess in a light emitting layer. As a result, when the lower side sealing layer is formed above the light emitting layer by vapor deposition, etc., there is a possibility that the sticking of the lower side sealing layer may be deteriorated, and the thickness of the lower side sealing layer above the contact portion may be reduced due to the width of the recess. When the thickness of the lower side sealing layer becomes thinner, sealing performance will decline, and moisture, etc. will easily enter. In other words, there is a need for an electro-optical device that improves sealing performance. 
     SUMMARY 
     An electro-optical device includes an electrode, a first reflection layer provided so as to be separate from the electrode by a first optical distance, a first pixel electrode provided between the electrode and the first reflection layer, a light emitting layer provided between the electrode and the first pixel electrode, a first optical distance adjustment layer provided between the first pixel electrode and the first reflection layer, and a first relay layer provided between the first pixel electrode and the first reflection layer, and configured to electrically couple the first pixel electrode and the first reflection layer, wherein the first optical distance adjustment layer is provided so as to be separate from the first relay layer. 
     An electronic apparatus includes the electro-optical device described above. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a block diagram illustrating a configuration of an organic EL device as an electro-optical device according to an first exemplary embodiment. 
         FIG. 2  is an equivalent circuit diagram illustrating an electrical configuration of a light emitting pixel in the organic EL device. 
         FIG. 3  is a plan view illustrating a configuration of a display unit. 
         FIG. 4  is a plan view illustrating a configuration of the display unit. 
         FIG. 5  is a plan view illustrating an arrangement of a pixel and a color filter in the display unit. 
         FIG. 6  is a cross-sectional view illustrating a configuration of the display unit. 
         FIG. 7  is a schematic cross-sectional view illustrating sticking of a lower side sealing layer. 
         FIG. 8  is a cross-sectional view illustrating a configuration of the display unit. 
         FIG. 9  is a cross-sectional view illustrating a configuration of the display unit. 
         FIG. 10  is a cross-sectional view illustrating a configuration of a display unit according to a second exemplary embodiment. 
         FIG. 11  is a cross-sectional view illustrating a configuration of the display unit. 
         FIG. 12  is a perspective view illustrating an appearance of a head-mounted display as an electronic apparatus according to an exemplary third embodiment. 
         FIG. 13  is a perspective view illustrating an appearance of a personal computer as an electronic apparatus. 
         FIG. 14  is a schematic cross-sectional view illustrating sticking of a lower side sealing layer in the related art. 
     
    
    
     DESCRIPTION OF EXEMPLARY EMBODIMENTS 
     Exemplary embodiments of the present disclosure will be described below with reference to the accompanying drawings. The exemplary embodiments described below describe an example of the present disclosure. The present disclosure is not limited to the following exemplary embodiments. 
     Note that, in each of the drawings below, to illustrate each of layers or each of members at a recognizable size, a scale of each of the layers or each of the members is different from an actual scale. In the following description, with respect to a substrate, for example, a description of “at a substrate” means either the case where it is disposed in contact with the substrate, where it is disposed at the substrate via another structure, or where a part is disposed in contact with the substrate and a part is disposed via another structure. 
     Furthermore, in the following drawings, XYZ axes are given as coordinate axes orthogonal to each other as necessary, a direction indicated by each of arrows is indicated as a +direction, and a direction opposite the +direction is indicated as a −direction. The Z direction may be referred to as an upward direction, and the −Z direction may be referred to as a downward direction, and viewing from the +Z direction is referred to as plan view or a planar manner. The +Z direction is also the direction in which the organic EL device described below emits light. 
     1. First Exemplary Embodiment 
     In the present exemplary embodiment, an organic EL (electroluminescence) device is illustrated as an electro-optical device. This organic EL device is suitably used, for example, in a head-mounted display (HMD) as an electronic apparatus described below, etc. The outline of an organic EL device  1  according to the present exemplary embodiment will be described with reference to  FIGS. 1 and 2 . Note that  FIG. 2  illustrates a pixel circuit  100  in the m-th row and the k-th column described below. 
     As shown in  FIG. 1 , the organic EL device  1  of the present exemplary embodiment includes a display panel  10  having a plurality of sub-pixels Px described below, and a control circuit  20  for controlling operation of the display panel  10 . 
     Digital image data Video is supplied to the control circuit  20  in synchronization with a synchronization signal from a host device (not illustrated). Here, the image data Video is digital data that defines a gray-scale level to be displayed by each sub-pixel Px of the display panel  10 . Moreover, the synchronization signal means a signal including a vertical synchronization signal, a horizontal synchronization signal, and a dot clock signal, etc. 
     The control circuit  20  generates a control signal Ctr that controls operation of the display panel  10  based on the synchronization signal, and supplies the generated control signal Ctr to the display panel  10 . Further, the control Circuit  20  generates an analog image signal Vid based on the image data Video, and supplies the generated image signal Vid to the display panel  10 . Here, the image signal Vid is a signal defining a luminance of a light emitting element included in the sub-pixel Px so that each sub-pixel Px displays a specified gray-scale of the image data Video. 
     The display panel  10  includes M scanning lines  13  that extend along the X-axis, 3N data lines  14  that extend along the Y-axis, a display unit  12  having “M×3N” pixel circuits  100  arranged corresponding to the intersection of the M scanning lines  13  and the 3N data lines  14 , and a driving circuit  11  that drives the display unit  12 . Here, M and N are each independent natural number of 1 or more. 
     In the following description, the plurality of scanning lines  13  correspond to a first row, a second row, . . . , a M-th row in order in the −Y direction, and the plurality of data lines  14  correspond to a first column, a second column, . . . , a 3N-th column in order in the +X direction in order to distinguish the plurality of sub-pixels Px, the plurality of scanning lines  13 , and the plurality of data lines  14  from each other. Furthermore, the +X direction and the +Y direction are referred to as a direction A, the −X direction and the +Y direction are referred to as a direction B, the −X direction and the −Y direction are referred to as a direction C, and the +X direction and the −Y direction are referred to as a direction D. 
     The plurality of sub-pixels Px provided at the display unit  12  include the pixel circuit  100  included in a sub-pixel Px capable of displaying red color (R), the pixel circuit  100  included in a sub-pixel Px capable of displaying green color (G), and the pixel circuit  100  included in a sub-pixel Px capable of displaying blue color (B). Then, in the organic EL device  1 , one case is assumed where, of the first to 3N columns, the pixel circuit  100  included in the sub-pixel Px capable of displaying R is disposed at the (3n−2)-th column, the pixel circuit  100  included in the sub-pixel Px capable of displaying G is disposed at the (3n−1)-th column, and the pixel circuit  100  included in the sub-pixel Px capable of displaying B is disposed at the 3n-th column, where n is a natural number satisfying  1 ≤n≤N. The driving circuit  11  includes a scanning line driving circuit  111  and a data line driving circuit.  112 . 
     The scanning line driving circuit  111  scans (selects) the scanning lines  13  in the first to M-th rows in order. Specifically, in one frame period, the scanning line driving circuit  111  sequentially selects the scanning lines  13  in order for each horizontal scanning period by setting scanning signals Gw [ 1 ] to Gw [m] output for each of the scanning lines  13  of the first to M-th rows to predetermined selective potentials in order for each horizontal scanning period. In other words, in the one frame period, the scanning line driving circuit  111  selects the scanning line  13  in the m-th row by setting, in the m-th horizontal scanning period, the scanning signal Gw [m] output for the scanning line  13  in the m-th row to a predetermined selective potential. Note that the one frame period is a period during which the organic EL device  1  displays one image. 
     The data line driving circuit  112  outputs analog data signals Vd [ 1 ] to Vd [3N] that define the gray-scale to be displayed by each pixel circuit  100  to the 3N data lines  14  for each horizontal scanning period based on the image signal Vid and the control signal Ctr supplied from the control circuit  20 . In other words, the data line driving circuit  112  outputs the data signal Vd [k] for the data line  14  in the k-th column in each horizontal scanning period. 
     Note that in the present exemplary embodiment, the image signal Vid output by the control circuit  20  is an analog signal, but the image signal vid output by the control circuit  20  may be a digital signal. In this case, the data line driving circuit  112  performs D/A conversion of the image signal Vid to generate analog data signals Vd [1] to Vd [3N]. 
     As illustrated in  FIG. 2 , the pixel circuit  100  includes a light emitting element  3  and a supply circuit  40  that supplies a current to the light emitting device  3 . The light emitting element  3  has a pixel electrode  31 , a light emitting functional layer  32 , and a counter electrode  33  as an electrode. The pixel electrode  31  functions as a positive electrode that supplies a hole to the light emitting functional layer  32 . The counter electrode  33  is electrically coupled to a power supplying line  16  set to an electric potential Vct, which is a power supply potential on a low potential side of the pixel circuit  100 , and functions as a negative electrode that supplies an electron to the light emitting functional layer  32 . Then, the hole supplied from the pixel electrode  31  and the electron supplied from the counter electrode  33  are re-coupled by the light emitting functional layer  32 , and the light emitting functional layer  32  emits light. 
     Note that, as will be described in detail below, a red color filter  81 R is disposed overlaid at the light emitting element  3  included in the pixel circuit  100  included in the sub-pixel Px capable of emitting light R. A green color filter  81 G is disposed overlaid at the light emitting element  3  included in the pixel circuit  100  included in the sub-pixel Px capable of emitting light G. A blue color filter  81 B is disposed overlaid at the light emitting element  3  of the pixel circuit  100  capable of emitting light B. Hereinafter, the light emitting element  3  included in the pixel circuit  100  included in the sub-pixel Px capable of emitting light R may also be referred to as a light emitting device  3 R; the light emitting element  3  included in the pixel circuit  100  included in the sub-pixel Px capable of emitting light G may also be referred to as a light emitting element  3 G; and the light emitting element  3  included in the pixel circuit  100  included in the sub-pixel Px capable of emitting light B may also be referred to as a light emitting element  3 B. 
     The supply circuit  40  includes P-channel type transistors  41 ,  42  and a retention capacitor  44 . Here, one or both of the transistors  41 ,  42  may be N-channel type transistors. In addition, the present exemplary embodiment illustrates a form in which the transistors  41 ,  42  are thin film transistors (TFTs), but the present disclosure is not limited thereto. The transistors  41 ,  42  may be field effect transistors such as MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors). 
     In the transistor  41 , the gate is electrically coupled to the scan line  13  in the m-th row, one of the source or drain is electrically coupled to the data line  14  in the k-th column, and the other of the source or drain is electrically coupled to the gate of the transistor  42  and one electrode of the two electrodes included in the retention capacitor  44 . 
     In the transistor  42 , the gate is electrically coupled to the other of the source or drain of the transistor  41  and one electrode of the retention capacitor  44 , one of the source or drain is electrically coupled to the pixel electrode  31 , and the other of the source or drain is electrically coupled to power source wiring  15  to which an electric potential Ve 1 , which is a power supply potential on a high potential side of the pixel circuit  100 , is applied. 
     In the retention capacitor  44 , one electrode of the two electrodes included in the retention capacitor  44  is electrically coupled to the other of the source or drain of the transistor  41  and the gate of the transistor  42 , and the other electrode of the two electrodes included in the retention capacitor  44  is electrically coupled to the power source wiring  15 . The retention capacitor  44  functions as a retention capacitor that holds the gate potential of the transistor  42 . 
     When the scanning line driving circuit ill selects the scanning line  13  in the m-th row by setting the scanning signal Gw [m] to the predetermined selective potential, the transistor  41  provided at the sub-pixel P [m] [k] in the m-th row and the k-th column is turned on. Then, when the transistor  41  is turned on, the data signal Vd [k] is supplied to the gate of the transistor  42  from the data line  14  in the k-th column. In this case, the transistor  42  supplies a current corresponding to the potential of the data signal Vd [k] supplied to the gate, to be exact, the potential difference between the gate and the source, to the light emitting element  3 . That is, the transistor  42  is a drive transistor that supplies a current to the light emitting element  3 . The light emitting element  3  emits light with a luminance corresponding to a magnitude of the current supplied from the transistor  42 , that is, a luminance corresponding to the potential of the data signal Vd [k]. 
     After that, when the scanning line driving circuit  111  releases the selection of the scanning line  13  in the m-th row and the transistor  41  is turned off, the gate potential of the transistor  42  is held by the retention capacitor  44 . Thus, the light emitting device  3  emits light at a luminance corresponding to the data signal Vd (k) even after the transistor  41  is turned off. 
     Note that while not illustrated in  FIG. 2 , a component that electrically couples the pixel electrode  31  included in the light emitting device  3  and the supply circuit  40  is referred to as a contact  7 . Each sub-pixel Px includes the light emitting element  3 , the supply circuit  40 , and a contact region Ca at which the contact  7  is disposed. The contact region Ca is a region at which the contact  7  can be disposed. The contact  7  electrically couples the pixel electrode  31  included in the light emitting device  3  and the supply circuit  40 . 
     Hereinafter, the contact  7  provided at a sub-pixel PxR is also referred to as a contact  7 R, the contact  7  provided at a sub-pixel PxG is also referred to as a contact  7 G, and the contact  7  provided at a sub-pixel PxB is also referred to as a contact  7 B. Further, the contact region Ca at which the contact  7 R is disposed is also referred to as a contact region CaR, the contact region Ca at which the contact  7 G is disposed is also referred to as a contact region CaG, and the contact region Ca at which the contact  7 B is disposed is also referred to as a contact region CaB. Details of the contact  7  will be described below. 
     A planar configuration of the display unit  12  will be described with reference to  FIGS. 3 to 5 . In  FIG. 3 , the color filter  81 , which will be described below, is omitted for ease of illustration. In  FIG. 4 , the color filter  81  is illustrated in  FIG. 3 , and the contact region Ca is omitted for ease of illustration. In  FIG. 5 , a pixel MPx 1 , a pixel MPx 2  disposed in the +X direction of the pixel MPx 1 , a pixel MPx 3  disposed in the +Y direction of the pixel MPx 1 , and a pixel MPx 4  disposed in the +Y direction of the pixel MPx 2 , and the color filter  81  are illustrated. 
     As illustrated in  FIG. 3 , one pixel MPx 1  in the display unit  12  includes sub-pixels PxR, PxG, PxB 1 , PxB 2 . The sub-pixel PxR includes a light emitting element  3 R. The sub-pixel PxG includes a light emitting element  3 G. The sub-pixel PxB. Includes a light emitting element  3 B 1 . The sub-pixel Px 82  includes a light emitting element  3 B 2 . In other words, the sub-pixel MPx 1  includes two sub-pixels PxB 1 , PxB 2  capable of displaying B. A current is supplied to the sub-pixels PxB 1 , PxB 2  from the same supply circuit  40 . 
     The sub-pixels PxB 1 , PxB 2  are disposed along the X-axis. The sub-pixels PxR, PxG are also disposed along the X-axis. The sub-pixels PxB 1 , PxR are disposed along the Y-axis. The sub-pixels PxG, PxB 2  are also disposed along the Y-axis. The sub-pixel PxB 1  and the sub-pixel PxB 2  located in the +X direction of the sub-pixel PxB 1  are coupled by a reflection layer  52 , which will be described below. Note that the planar arrangement of the sub-pixels PxR, PxG, PxB 1 , PxB 2  is not limited to the above. 
     In the present exemplary embodiment, the case is assumed where light emitting regions HaR, HaG, HaB 1 , HaB 2  are formed by each of the light emitting elements  3 R,  3 G,  3 B 1 ,  3 B 2  included in the pixel MPx. The light emitting regions HaR, HaG, HaB 1 , HaB 2  emit light toward the +Z direction. Hereinafter, the light emitting regions HaP, HaG, HaB 1 , HaB 2  are also referred to collectively as a light emitting regions Ha. The light emitting region Ha is a region in which the pixel electrode  31  described above is provided, and the upper portion of the region is opened by the pixel separation layer  34 , which will be described below. The light emitting region Ha is also said to be a region where the pixel electrode  31  and the light emitting functional layer  32  are in contact. Note that an example of a first light emitting region of the present disclosure is the light emitting region HaR, and an example of a second light emitting region of the present disclosure is the light emitting region HaG. 
     In a planar manner, the shape of the light emitting regions HaR, HaG, HaB 1 , HaB 2  is an octagon. Of each side of the light emitting region Ha, a first side located in the direction C when viewed from the center of the light emitting region Ha, and a fifth side positioned in the direction A when viewed from the center of the light emitting region Ha, are parallel to each other. Of each side of the light emitting region Ha, a second side located in the −Y direction when viewed from the center of the light emitting region Ha, and a sixth side positioned in the +Y direction when viewed from the center of the light emitting region Ha, are parallel to each other. Of each side of the light emitting region Ha, a third side located in the direction D when viewed from the center of the light emitting region Ha, and a seventh side positioned in the direction B when viewed from the center of the light emitting region Ha, are parallel to each other. Of each side of the light emitting region Ha, a fourth side located in the +X direction when viewed from the center of the light emitting region Ha, and an eighth side positioned in the −X direction when viewed from the center of the light emitting region Ha, are parallel to each other. 
     The contact region Ca included in the sub-pixel Px is located in the direction A as viewed from the light emitting region Ha included in the sub-pixel Px. Specifically, a contact region CaR included in the sub-pixel PxR is located in the direction A of the light emitting region HaR included in the sub-pixel PxR. A contact region CaG included in the sub-pixel PxG is located in the direction A of the light emitting region HaG included in the sub-pixel PxG. A contact region CaB 1  included in the sub-pixel PxB 1  is located in the direction A of the light emitting region HaB 1  included in the sub-pixel PxB 1 . A contact region CaB 2  included in the sub-pixel PxB 2  is located in the direction A of the light emitting region HaB 2  included in the sub-pixel PxB 2 . 
     The contact regions Ca are aligned along the direction A. A contact  7 B 1  is disposed in the contact region CaB 1 . A contact  7 B 2  is disposed in the contact region CaB 2 . An example of the contacts  7 B 1 ,  7 B 2  according to the present disclosure is a third relay electrode  71 , which will be described below. A third pixel electrode  31 , which will be described below, and a third reflection layer  52 , which will be described below, are electrically coupled via the third relay electrode  71 . 
     The contact  7 R is disposed in the contact region CaR. A first pixel electrode  31 , which will be described below, and a first reflection layer  52 , which will be described below, are electrically coupled via a first relay electrode  71 , which is an example of the contact  7 R of the present disclosure. The contact  7 G is disposed in the contact region CaG. A second pixel electrode  31 , which will be described below, and a second reflection layer  52 , which will be described below, are electrically coupled via a second relay electrode  71 , which is an example of the contact.  7 G of the present disclosure. 
     As illustrated in  FIG. 4 , the display unit  12  includes the color filters  81 R,  81 G,  81 B as the color filter  81 . The color filter  81 R is disposed above the light emitting device  3 R and overlaid with the sub-pixel PxR in a planar manner. The color filter  81 G is disposed above the light emitting element  3 G and overlaid with the sub-pixel PxG in a planar manner. The color filter BIB is disposed above the light emitting elements  3 B 1 ,  3 B 2  and overlaid with the sub-pixels PxB 1 , PxB 2 . The color filters  81 R, BIG,  81 B are rectangular and are disposed so as not to overlap with each other. The color filters  81 R,  81 G,  81 B may be partially overlapped with each other. 
     As illustrated in  FIG. 5 , the color filter  81  adjacent to each sub-pixel PxR of the pixel. MPx 1  to the pixel MPx 4  in the +X direction is the color filter  81 G. The color filter  81  adjacent to each sub-pixel PxG of the pixel MPx 1  to the pixel MPx 4  in the +X direction is the color filter  81 R. The color filter  81  adjacent to each sub-pixel PxB of the MPx 1  to the pixel MPx 4  in the +X direction is the color filter  81 B (not illustrated). The above relationship is the same in the −X direction as in the +X direction described above. 
     The color filter  81  adjacent to each sub-pixel PxR of the pixel MPx 1  to the pixel MPx 4  in the +Y direction is the color filter  81 B. The color filter  81  adjacent to each sub-pixel PxG of the pixel MPx 1  to the pixel MPx 4  in the +Y direction is the color filter  81 B. The color filter  81  adjacent to each sub-pixel PxB of the MPx 1  to the pixel MPx 4  in the +Y direction is the color filter  81 R and the color filter  81 G. The above relationship is the same in the −Y direction as in the +Y direction described above. 
     A cross-sectional configuration of the display unit  12  will be described with reference to  FIGS. 6 to 9 . Reference is also made to  FIG. 14  to describe the sticking of the lower side sealing layer in the related art.  FIG. 6  is a cross section orthogonal to the X-Y plane including the line segment E 3 -e 3  of  FIG. 4 , including the contact  7 R. In  FIG. 7 , the contact  7 R and the region above the contact  7 R and are enlarged.  FIG. 8  is a cross section orthogonal to the X-Y plane including the line segment E 4 -e 4  of  FIG. 4 , including the contact  7 G.  FIG. 9  is a cross section orthogonal to the X-Y plane including the line segment E 2 -e 2  of  FIG. 4 , including the contact  7 B 1 .  FIG. 14  illustrates a region corresponding to  FIG. 7  in the recent organic EL device. 
     Note that the description in  FIG. 6  mainly describes the configuration of the sub-pixel PxR, the description in  FIG. 8  mainly describes the configuration of the sub-pixel PxG, and the description in  FIG. 9  mainly describes the configuration of the sub-pixel PxB 1 . The sub-pixel PxB 2  has the same configuration as the sub-pixel PxB 1 , and thus descriptions thereof will be omitted. Furthermore, the reflection layer  52  provided at the sub-pixel PxP is a first reflection layer of the present disclosure, the reflection layer  52  provided at the sub-pixel PxG is a second reflection layer of the present disclosure, and the reflection layer  52  provided at each of the sub-pixels PxB 1 , PxB 2  is a third reflection layer of the present disclosure. 
     As illustrated in  FIG. 6 , the display unit  12  includes an element substrate  5 , a protective substrate  9 , and an adhesive layer  90  provided between the element substrate  5  and the protective substrate  9 . The organic EL device  1  assumes a top emission method in which light is emitted upward from the protective substrate  9 . 
     The organic EL device  1  includes the counter electrode  33  as an electrode, the first reflection layer  52 , the first pixel electrode  31 , a light emitting layer  30 , optical distance adjustment layers  57 ,  58  serving as first optical distance adjustment layers, and the first relay electrode  71  in the sub-pixel PxR of the display unit  12 . 
     In the light emitting region HaR, the first reflection layer  52  is provided so as to be separate from the counter electrode  33  by a first optical distance. In other words, the first optical distance refers to a product of a distance in a direction along the Z-axis between a surface above the counter electrode  33  and a surface above the first reflection layer  52  in the light emitting region. HaR, and the refractive index therebetween. 
     The first pixel electrode  31  is provided between the counter electrode  33  and the first reflection layer  52 . The light emitting layer  30  is provided between the counter electrode  33  and the first pixel electrode  31 . The optical distance adjustment layers  57 ,  58  are provided between the first pixel electrode  31  and the first reflection layer  52 . The first relay electrode  71  is provided between the first pixel electrode  31  and the first reflection layer  52 , and electrically couples the first pixel electrode  31  and the first reflection layer  52 . 
     The optical distance adjustment layers  57 ,  58  are provided so as to be separate from the first relay electrode  71 . That is, the optical distance adjustment layers  57 ,  58  are not provided in a region that overlaps with the contact portion where the first relay electrode  71  and the first reflection layer  52  come into contact in plan view. 
     The adhesive layer  90  is a transparent resin layer that adheres the element substrate  5  and the protective substrate  9 . The adhesive layer  90  is formed from a transparent resin material such as, for example, an epoxy-based resin. The protective substrate  9  is a transparent substrate disposed above the adhesive layer  90 . The protective substrate  9  protects a member such as the color filter  81  disposed below the protective substrate  9 . A quartz substrate is employed as the protective substrate  9 , for example. 
     The element substrate  5  includes a substrate  50 , a circuit layer  49  formed at the substrate  50 , an interlayer insulating layer  51  laminated above the circuit layer  49 , a reflection layer  52 , a hyper-reflection layer  53 , a first insulating layer  54  as a protective layer, a second insulating layer  55  as a protective layer, the first relay electrode  71 , a third insulating layer  72  as a protective layer, the optical distance adjustment layers  57 ,  58 , the pixel electrode  31 , the light emitting layer  30 , a sealing layer  60 , and a color filter layer B. As described in detail below, the light emitting layer  30  includes the light emitting device  3 R described above. The light emitting element  3  emits light upward and downward. The color filter layer  8  includes the color filter  81 . 
     A substrate capable of implementing various wiring and various circuits is employed for the substrate  50 . Specifically, for the substrate  50 , for example, a silicon substrate, a quartz substrate, a glass substrate, etc. can be employed. The circuit layer  49  is formed at the substrate  50 . The circuit layer  49  includes various circuits such as the scanning lines  13  and the data lines  14  described above, the driving circuit  11 , and the pixel circuit.  100 . The interlayer insulating layer  51  is laminated above the circuit layer  49 . 
     An insulating material such as silicon oxide, for example, is employed for the interlayer insulating layer  51 . The reflection layer  52  is laminated above the interlayer insulating layer  51 . The reflection layer  52  reflects light emitted from the light emitting element  3  of the light emitting layer  30  upward. A film including aluminum and a copper alloy above the titanium layer, for example, is employed for the reflection layer  52 . The reflection layer  52  is a conductive layer having reflective properties with respect to the light, and is formed in discrete islands for each sub-pixel Px. 
     The hyper-reflection layer  53  is disposed covering a surface above the reflection layer  52 , and has a function of enhancing the light reflective properties of the reflection layer  52 . For example, silicon oxide, which is an insulating material having light transmittance, is employed for the hyper-reflection layer  53 . 
     The first insulating layer  54  as a protective layer is provided at a surface above the hyper-reflection layer  53 . The first insulating layer  54  is also provided inside a gap  52  CT provided at the reflection layer  52 . As such, the first insulating layer  54  has a recessed portion  54   a  corresponding to the recess of the gap  52  CT. An embedded insulating film  56  is formed to fill the inside of the recessed portion  54   a . The second insulating layer  55  is provided as a protective layer over the first insulating layer  54  and the embedded insulating film  56 . For example, silicon nitride is employed for the first insulating layer  54  and the second insulating layer  55 . 
     A gap  53  CT is provided at a position corresponding to the contact  7 R in a planar manner. The gap  53  CT extends through the hyper-reflection layer  53 , the first insulating layer  54 , the second insulating layer  55 , and the third insulating layer  72  as a protective layer to be described below. As will be described in greater detail below, the first relay electrode  71 , the first pixel electrode  31 , etc. are provided inside the gap  53  CT. 
     The optical distance adjustment layers  57 ,  58 , the third insulating layer  72 , and the pixel separation layer  34  are disposed above the second insulating layer  55  as a protective layer. Specifically, the optical distance adjustment layers  57 ,  58  are provided in a region including the light emitting region HaR in the direction C with respect to the gap  53  CT. The optical distance adjustment layer  57  is provided at a surface above the second insulating layer  55 , and the optical distance adjustment layer  58  is laminated at a surface above the optical distance adjustment layer  57 . The third insulating layer  72  and the first relay electrode  71  are disposed in the direction A of the optical distance adjustment layers  57 ,  58 . 
     The optical distance adjustment layer  57  and the third insulating layer  72  are disposed so that the positions thereof in the direction along the Z-axis are substantially equal. The optical distance adjustment layer  58  and an end portion in the direction C of the first relay electrode  71  are disposed so that the positions thereof in the direction along the Z-axis are substantially equal. An end portion in the direction A of the optical distance adjustment layers  57 ,  58  and end portions in the direction C of the third insulating layer  72  and the first relay electrode  71  are separated by a portion of the first pixel electrode  31  extending to the lower second insulating layer  55 . In other words, the optical distance adjustment layers  57 ,  58  are provided so as to be separate from the first relay electrode  71 . In other words, in plan view, the first relay electrode  71  does not overlap with the optical distance adjustment layers  57 ,  58 , and the end portion in the direction A of the optical distance adjustment layers  57 ,  58  is disposed between the light emitting region HaR where the first pixel electrode  31  and the light emitting layer  30  come into contact, and the first relay electrode  71 . 
     Thus, in the region where the first relay electrode  71  and the first pixel electrode  31  come into contact, the first relay electrode  71  and the optical distance adjustment layers  57 ,  58  are separated. As a result, a step between the light emitting region HaR and the contact region CaR is reduced. Since the step is reflected by a step of the lower side sealing layer  61  formed above, the step reduction helps to reduce the step of the lower side sealing layer  61 . Furthermore, in the lower side sealing layer  61 , cracking caused by the step of the lower side sealing layer  61  is suppressed, whereby the sealing performance of the lower side sealing layer  61  can be further improved. 
     In addition, the end portion in the direction A of the optical distance adjustment layers  57 ,  58  is separated from the end portion in the direction C of the first relay electrode  71 . That is, the end portion in the direction A of the optical distance adjustment layers  57 ,  58  does not ride up at the end portion in the direction C of the first relay electrode  71 . Therefore, the step generated between the lower side sealing layer  61  above the end portion in the direction A of the light emitting region HaR and the lower side sealing layer  61  above the end portion in the direction C of the pixel separation layer  34  becomes smaller. When the step is large, light may be emitted in the direction A further than the end portion in the direction A of the light emitting region HaR, but this reduction makes it possible to suppress this unnecessary light emission. In other words, the occurrence of color shifting in the organic EL device  1  can be reduced. 
     The optical distance adjustment layers  57 ,  58  have functions to adjust the optical distance between the counter electrode  33  and the reflection layer  52  for each sub-pixel PxR, PxG, PxB. The optical distance adjustment layers  57 ,  58  as the first optical distance adjustment layers are provided at the sub-pixel PxR. The optical distance adjustment layer  58  as a second optical distance adjustment layer is provided at the sub-pixel PxG. None of the optical distance adjustment layers  57 ,  58  are provided at the sub-pixels PxB 1 , PxB 2 . 
     In the present exemplary embodiment, the optical distance adjustment layers  57 ,  58  are insulating layers including silicon oxide. As a result, light transmittance and insulating properties are imparted to the optical distance adjustment layers  57 ,  58 . Note that the optical distance adjustment layers  57 ,  58  are not limited to being an insulating layer. 
     The third insulating layer  72  is provided over the second insulating layer  55  around the gap  53  CT. An insulating material such as silicon oxide is employed for the third insulating layer  72 . Here, the first insulating layer  54 , the second insulating layer  55 , and the third insulating layer  72 , which are protective layers, and the optical distance adjustment layers  57 ,  58 , are common in that they are transparent layers disposed between the reflection layer  52  and the pixel electrode  31 , whereas each function thereof is different. The protective layer including the first insulating layer  54 , the second insulating layer  55 , and the third insulating layer  72  is provided in common at sub-pixels PxR, PxG, PxB 1 , PxB 2  to protect the contact  7 , etc. In contrast, the optical distance adjustment layers  57 ,  58  are selectively disposed in accordance with the color of each sub-pixel Px to form a light resonance structure. 
     The first relay electrode  71  is provided over the third protective layer  72  and inside the gap  53  CT. Thus, the first relay electrode  71  contacts and is electrically coupled to the first reflection layer  52  at the bottom portion of the gap  53  CT. In the present exemplary embodiment, in order to make the electrical coupling between the first relay electrode  71  and the first reflection layer  52  more reliable, the width of the gap  53  CT, that is, the width at which the first relay electrode  71  and the first reflection layer  52  come into contact in the direction A and the direction C is made larger than before. A conductive material such as tungsten, titanium, titanium nitride, etc., for example, is employed for the first relay electrode  71 . 
     The light emitting layer  30  has the pixel electrode  31 , the pixel separation layer  34 , the light emitting functional layer  32  covering the upper portion of the pixel electrode  31  and the pixel separation layer  34 , etc., and the counter electrode  33  laminated above the light emitting functional layer  32 . 
     The pixel electrode  31  is a transparent layer having electrical conductivity, and is formed in discrete islands for each sub-pixel Px. The first pixel electrode  31  is disposed above the first relay electrode  71  including an inner side of the gap  53  CT, and above the optical distance adjustment layers  57 ,  58  in the direction C of the gap  53  CT. The first pixel electrode  31  contacts and is electrically coupled to the first relay electrode  71  above the first relay electrode  71  including the inner side of the gap  53  CT. As a result, the first reflection layer  52  and the first pixel electrode  31  are electrically coupled via the first relay electrode  71 . 
     In addition, as described above, the first pixel electrode  31  is provided to separate the end portion in the direction A of the optical distance adjustment layers  57 ,  58  and the end portion in the direction C of the first relay electrode  71 . The first pixel electrode  31  is disposed across the light emitting region HaR, and an end portion in the direction A of the pixel electrode  31  is located in the direction C further than the recessed portion  54   a . For the first pixel electrode  31 , for example, a conductive transparent material such as ITO (Indium Tin Oxide) or IZO (Indium Zinc Oxide) is employed. 
     The pixel separation layer  34  is provided covering a peripheral portion, etc. of the first pixel electrode  31 , excluding the upper portion of the light emitting region HaR. Specifically, the pixel separation layer  34  has an end portion in the direction A at a boundary portion of the light emitting region HaB 1 , and an end portion in the direction C in the vicinity of the light emitting region HaR. The pixel separation layer  34  covers an upper portion of a peripheral portion of the first pixel electrode  31  including the inner side of the gap  53  CT, an end portion of the first pixel electrode  31  in the direction A of the first relay electrode  71 , and an upper portion of the second insulating layer  55  in the direction A of the gap  53  CT, etc. The pixel separation layer  34  divides a plurality of pixels Px provided at the display unit  12  to each other in a planar manner. An insulating material such as silicon oxide is employed for the pixel separation layer  34  which electrically insulates between adjacent light emitting elements  3 . 
     Although not illustrated, the light emitting functional layer  32  includes a hole injecting layer, a hole transport layer, an organic light emitting layer, and an electron transport layer. The light emitting functional layer  32  is provided over the pixel electrode  31  and the pixel separation layer  34  in a flattened state over the plurality of sub-pixels Px. Since the light emitting functional layer  32  is provided to fill the inner side of the gap  53  CT, the shape of the inward-facing recess in the gap  53  CT is reflected in the light emitting functional layer  32 . Thus, in the light emitting functional layer  32 , a recess is formed at a position corresponding to the gap  53  CT in a planar manner. 
     The light emitting functional layer  32  emits white light by supplying the hole from a region where the upper portion of the pixel electrode  31  is not covered by the pixel separation layer  34 . The white light emitted from the light emitting element  3  is light including red light, green light, and blue light. Note that in the present specification, a structure included in the region including the light emitting region Ha and the contact region Ca is regarded as the sub-pixel Px in plan view. 
     The counter electrode  33  is provided over the light emitting functional layer  32  in a flattened state over the plurality of sub-pixels Px. The counter electrode  33  has light transmittance, light reflectivity, and conductivity. A recess corresponding to the recess in the gap  53  CT occurs at a surface above the counter electrode  33 . A conductive material such as, for example, an alloy of magnesium and silver is employed for the counter electrode  33 . 
     In the organic EL device  1 , the optical resonance structure is formed between the reflection layer  52  and the counter electrode  33  due to the arrangement of the optical distance adjustment layers  57 ,  58 . Therefore, light emitted from the light emitting functional layer  32  is repeatedly reflected between the reflection layer  52  and the counter electrode  33 . As a result, the light is emitted upward through the counter electrode  33  by increasing the intensity thereof of the wavelength corresponding to the optical distance between the reflection layer  52  and the counter electrode  33 . 
     In the present exemplary embodiment, the thickness and arrangement of the optical distance adjustment layers  57 ,  58 , for example, increase the intensity of light at a wavelength of 610 nm for the sub-pixel PxR, the intensity of light at a wavelength of 540 nm for the sub-pixel PxG, and the intensity of light at a wavelength of 470 nm for the sub-pixels PxB 1 , PxB 2 , although not particularly limited. As a result, red light with a maximum luminance of light having a wavelength of 610 nm is emitted from the sub-pixel PxR, green light with a maximum luminance of light having a wavelength of 540 nm is emitted from the sub-pixel PxG, and blue light with a maximum luminance of light having a wavelength of 470 nm is emitted from the sub-pixels PxB 1 , PxB 2 . 
     The sealing layer  60  is provided over the counter electrode  33  in a flattened state over the plurality of sub-pixels Px. The sealing layer  60  has the lower side sealing layer  61 , a flattening layer  62 , and an upper side sealing layer  63 . In the sealing layer  60 , the lower side sealing layer  61 , the flattening layer  62 , and the upper side sealing layer  63  are laminated in this order from the counter electrode  33  upward. The lower side sealing layer  61  and the upper side sealing layer  63  are transparent layers having insulating properties, and inhibit ingress of moisture, oxygen, etc. into the light emitting layer  30 . For example, silicon oxynitride is employed for the lower side sealing layer  61  and the upper side sealing layer  63 . The flattening layer  62  is a transparent layer that flattens the unevenness corresponding to the underlying component. A transparent resin material such as an epoxy-based resin, for example, is employed for the flattening layer  62 . 
     Here, the sticking of the lower side sealing layer  61  at the time of formation will be described by comparing the organic EL device  1  with the recent organic EL device. In the organic EL device of the related art illustrated in  FIG. 14 , similarly to the organic EL device  1  of the present exemplary embodiment, the width of the contact surfaces in the direction A and the direction C are increased in order to make the electrical coupling between a reflection layer  552  and a first relay electrode  571  more reliable. In  FIGS. 7 and 14 , the surface of the lower side sealing layer  61 ,  561  is represented by a solid line, and the surface during formation of the lower side sealing layer  61 ,  561  is represented by a dashed line. 
     As illustrated in  FIG. 14 , in the contact  7 R of the recent organic EL device, the first relay electrode  571  and the reflection layer  552  are electrically coupled. The first relay electrode  571  and the pixel electrode  531  are electrically coupled by being in contact with each other at another position in the direction C (not illustrated). 
     The first relay electrode  571  is provided along the inner side of a gap  553  CT. As a result, a recess is formed in the first relay electrode  571 . Optical distance adjustment layers  557 ,  558 , the pixel electrode  531 , a pixel separation layer  534 , a light emitting functional layer  532 , and a counter electrode  533  are laminated in this order on the upper side including the recess of the first relay electrode  571 . The shape of the recess in the first relay electrode  571  is reflected to the counter electrode  533 , and a recess is also formed at the counter electrode  533 . 
     Although the width of the contact surface between the first relay electrode  571  and the reflection layer  552  is enlarged, each layer described above is provided inside the recess of the first relay electrode  571 . Therefore, the recess formed in the counter electrode  533  has a narrow width. Then, when the lower side sealing layer  561  is formed by a gas phase method such as vapor deposition, the forming material of the lower side sealing layer  561  adheres to the overhang state during formation. As a result, the upper portion of the recess becomes occluded, and the sticking become worse, and the forming material is less likely to be deposited on the bottom portion of the recess. As a result, the thickness of the lower side sealing layer  561  at the bottom portion of the recess of the counter electrode  533  becomes thinner, and it is difficult to improve the sealing performance. 
     In addition, although not illustrated in the drawings, in the recent organic EL device, the optical distance adjustment layer is provided inside the recess in the contact  7 G of the sub-pixel PxG, so it is difficult to improve the sealing performance in the same manner as the recent contact  7 R. Note that, even in the recent organic EL device, it is possible to improve the sticking by further enlarging the width of the recess in the contacts  7 R,  7 G, but there was a limit to widening the contacts  7 R,  7 G due to restrictions on the density and arrangement of the sub-pixel Px. 
     In contrast, as illustrated in  FIG. 7 , in the present exemplary embodiment, the pixel electrode  31 , the pixel separation layer  34 , the light emitting functional layer  32 , and the counter electrode  33  are laminated in this order on the upper side including the recess of the first relay electrode  71 . Since the optical distance adjustment layers  57 ,  58  are not provided inside the recess of the first relay electrode  71 , the recess occurred in the counter electrode  33  is wider than in the related art. Therefore, even when the lower side sealing layer  61  is formed by a vapor phase method such as vapor deposition, the upper portion of the recess becomes less likely to be occluded during formation, and the thickness of the lower side sealing layer  61  at the bottom portion of the recess becomes thicker. As a result, the sealing performance can be further improved than the related art. 
     Note that, although not illustrated, in the present exemplary embodiment, the contact  7 G of the sub-pixel PxG also has the same form as the contact  7 R described above. As a result, the sticking of the lower side sealing layer  61 , compared to the related art, is improved in the sub-pixel PxG, and the sealing performance is improved. 
     Returning to  FIG. 6 , the color filter layer  8  is disposed above the upper side sealing layer  63 . The color filter layer  8  includes the color filters  81 R,  818 , and the color filter  81 G (not illustrated). The color filter  81 R has a function of transmitting red light, the color filter  81 G has a function of transmitting green light, and the color filter  81 B has a function of transmitting blue light. The color filter  81  is formed, for example, by applying a photosensitive resin including a pigment capable of exhibiting each function and then patterning. The protective substrate  9  is disposed above the color filter layer  8  via the adhesive layer  90 . 
     As illustrated in  FIG. 8 , the organic EL device  1  includes the counter electrode  33  as an electrode, the second reflection layer  52 , the second pixel electrode  31 , the light emitting layer  30 , the optical distance adjustment layer  58  serving as the second optical distance adjustment layer, and the second relay electrode  71  in the sub-pixel PxG of the display unit  12 . Note that the configuration of the sub-pixel PxG is described only for a configuration different from that of the sub-pixel PxR, and descriptions thereof are omitted using the same reference signs as those of the sub-pixel PxR. 
     In the light emitting region HaG, the second reflection layer  52  is provided so as to be separate from the counter electrode  33  by a second optical distance. In other words, the second optical distance refers to a product of a distance in a direction along the Z-axis between a surface above the counter electrode  33  and a surface above the second reflection layer  52  in the light emitting region HaG, and the refractive index therebetween. The second optical distance is shorter than the first optical distance in the light emitting region HaR. 
     The second pixel electrode  31  is provided between the counter electrode  33  and the second reflection layer  52 . The light emitting layer  30  is provided between the counter electrode  33  and the second pixel electrode  31 . The second relay electrode  71  is provided between the second pixel electrode  31  and the second reflection layer  52 , and electrically couples the second pixel electrode  31  and the second reflection layer  52 . 
     The optical distance adjustment layer  58  is provided between the second pixel electrode  31  and the second reflection layer  52 , and no optical distance adjustment layer  57  is provided. That is, the second optical distance adjustment layer of the sub-pixel PxG is thinner than the first optical distance adjustment layer of the sub-pixel PxR. The optical distance adjustment layer  58  is provided so as to be separate from the second relay electrode  71 . The optical distance adjustment layer  58  is not provided in a region that overlaps with the contact portion where the second relay electrode  71  and the second reflection layer  52  come into contact in plan view. In other words, in plan view, the second relay electrode  71  does not overlap with the optical distance adjustment layer  58 , and the end portion in the direction A of the optical distance adjustment layer  58  is disposed between the light emitting region HaG where the second pixel electrode  31  and the light emitting layer  30  come into contact, and the second relay electrode  71 . 
     As a result, in the region where the second relay electrode  71  and the second pixel electrode  31  come into contact, the second relay electrode  71  and the optical distance adjustment layer  58  are separated. Therefore, a step between the light emitting region HaG and the contact  7 G is reduced. Since the step is reflected by a step of the lower side sealing layer  61  formed above, the step reduction helps to reduce the step of the lower side sealing layer  61 . Furthermore, in the lower side sealing layer  61 , cracking caused by the step of the lower side sealing layer  61  is suppressed, whereby the sealing performance of the lower side sealing layer  61  can be further improved. 
     In addition, the end portion in the direction A of the optical distance adjustment layer  58  is separated from the end portion in the direction C of the second relay electrode  71 . That is, the end portion in the direction A of the optical distance adjustment layer  58  does not ride up at the end portion in the direction C of the second relay electrode  71 . Therefore, the step generated between the lower side sealing layer  61  above the end portion in the direction A of the light emitting region HaG and the lower side sealing layer  61  above the end portion in the direction C of the pixel separation layer  34  becomes smaller. When the step is large, light may be emitted in the direction A further than the end portion in the direction A of the light emitting region HaG, but this reduction makes it possible to suppress this unnecessary light emission. In other words, the occurrence of color shifting in the organic EL device  1  can be reduced. 
     As illustrated in  FIG. 9 , the organic EL device  1  includes the counter electrode  33  as an electrode, the third reflection layer  52 , the third pixel electrode  31 , the light emitting layer  30 , and the third relay electrode  71  in the sub-pixel PxB 1  of the display unit  12 . The sub-pixels PxB 1 , PxB 2  do not have the optical distance adjustment layer. Note that the configuration of the sub-pixel PxB 1  is described only for a configuration different from that of the sub-pixel PxR, and descriptions thereof are omitted using the same reference signs as those of the sub-pixel PxR. 
     In the light emitting region HaB 1 , the third reflection layer  52  is provided so as to be separate from the counter electrode  33  by a third optical distance. In other words, the third optical distance refers to a product of a distance in a direction along the Z-axis between a surface above the counter electrode  33  and a surface above the third reflection layer  52  in the light emitting region HaB 1 , and the refractive index therebetween. The third optical distance is shorter than the second optical distance in the light emitting region HaG. 
     The third pixel electrode  31  is provided between the counter electrode  33  and the third reflection layer  52 . The light emitting layer  30  is provided between the counter electrode  33  and the third pixel electrode  31 . The third relay electrode  71  is provided between the third pixel electrode  31  and the third reflection layer  52 . The third relay electrode  71  electrically couples the third pixel electrode  31  and the third reflection layer  52 . 
     As described above, in the sub-pixel PxR, the optical distance adjustment layers  57 ,  58  are provided in a region including the light emitting region HaR, and the optical distance adjustment layers  57 ,  58  are not provided in a region overlapping with the first relay electrode  71  in plan view. Further, in the sub-pixel PxG, the optical distance adjustment layer  58  is provided in a region including the light emitting region HaG, and the optical distance adjustment layer  58  is not provided in a region overlapping with the second relay electrode in plan view. Furthermore, no optical distance adjustment layer is provided at the sub-pixels PxB 1 , PxB 2 . Thus, the distance between the first reflection layer  52  and the counter electrode  33  in the region where the first relay electrode  71  is provided, the distance between the second reflection layer  52  and the counter electrode  33  in the region where the second relay electrode  71  is provided, and the distance between the third reflection layer  52  and the counter electrode  33  in the region where the third relay electrode  71  is provided, are equal. 
     As a result, the inside of the contacts  7 R,  7 B is widened, and the width of the recess formed in the corresponding upper light emitting layer  30  also widens. As a result, when the lower side sealing layer  61  is formed by vapor deposition, the thickness of the lower side sealing layer  61  can be increased by improving the sticking. 
     According to the present exemplary embodiments, the following advantages can be obtained. 
     Sealing performance can be improved above the first relay electrode  71 . Specifically, in the sub-pixel PxF, the first relay electrode  71  and the optical distance adjustment layers  57 ,  58  are disposed separately from each other, and the optical distance adjustment layers  57 ,  58  are not disposed on the inner side of the contact  7 R between the first relay electrode  71  and the first reflection layer  52 . As a result, the inside of the contact  7 R is widened, and the width of the recess formed in the upper light emitting layer  30  also widens. As a result, when the lower side sealing layer  61  is formed on the upper side of the light emitting layer  30  by vapor deposition, the thickness of the lower side sealing layer  61  is ensured by improving the sticking. As a result, the organic EL device  1  that improves the sealing performance above the contact  7 R at the first relay electrode  71  can be provided. 
     Sealing performance can be improved above the second relay electrode  71 . Specifically, in the sub-pixel PxG, the second relay electrode  21  and the optical distance adjustment layer  58  are disposed separately from each other, and the optical distance adjustment layer  58  is not disposed on the inner side of the contact  7 G between the second relay electrode  71  and the second reflection layer  52 . As a result, the inside of the contact  7 G is widened, and the width of the recess formed in the upper light emitting layer  30  also widens. As a result, when the lower side sealing layer  61  is formed on the upper side of the light emitting layer  30  by vapor deposition, the thickness of the lower side sealing layer  61  is ensured by improving the sticking. As a result, the organic EL device  1  that improves the sealing performance above the contact  7 G at the second relay electrode  71  can be provided. 
     2. Second Exemplary Embodiment 
     In the present exemplary embodiment, as in the first exemplary embodiment, an organic EL device is exemplified as an electro-optical device. The light emitting device is also suitably used in the HMD described below. The organic EL device according to the present exemplary embodiment differs from the organic EL device  1  of the first exemplary embodiment in the material of the first optical distance adjustment layer and the second optical distance adjustment layer. In addition, the same components as in the first exemplary embodiment are given the same reference signs, and redundant descriptions of these components will be omitted. 
     The configurations of the first optical distance adjustment layer and the second optical distance adjustment layer in the organic EL device of the present exemplary embodiment will be described with reference to  FIGS. 10 and 1 . In  FIG. 10 , the region corresponding to contact  7 R in  FIG. 6  of the first exemplary embodiment is enlarged. In  FIG. 11 , the region corresponding to contact  7 G in  FIG. 8  of the first exemplary embodiment is enlarged. Note that the description of  FIG. 10  describes a configuration of the sub-pixel ExR, and the description in  FIG. 11  describes a configuration of the sub-pixel PxG. 
     As illustrated in  FIG. 10 , as the first optical distance adjustment layer, optical distance adjustment layers  257 ,  258  are provided at the sub-pixel PxR. The planar and cross-sectional arrangement of the optical distance adjustment layer  257 ,  258  is the same as the optical distance adjustment layers  57 ,  58  of the first exemplary embodiment. The optical distance adjustment layers  257 ,  258  are transparent conductive layers that include the same material as the first pixel electrode. Specifically, ITO, IZO, etc., for example, are employed for the optical distance adjustment layers  257 ,  258 . 
     As illustrated in  FIG. 11 , as the second optical distance adjustment layer, the optical distance adjustment layer  258  is provided is provided at the sub-pixel PxG. The planar and cross-sectional arrangement of the optical distance adjustment layer  258  is the same as the optical distance adjustment layer  58  of the first exemplary embodiment. 
     The present exemplary embodiment can achieve a similar effect to the first exemplary embodiment. 
     3. Third Exemplary Embodiment 
     An example of an electronic apparatus according to the present exemplary embodiment illustrates a head-mounted display and a personal computer. 
     As illustrated in  FIG. 12 , a head-mounted display  300  as an electronic apparatus of the present exemplary embodiment includes a temple  310 , a bridge  320 , and projection optical systems  301 L,  301 R. Although not illustrated, the projection optical system  301  L includes the electro-optical device for the left eye, and the projection optical system  301  R includes the electro-optical device for the right eye. The organic EL device of the above exemplary embodiment is employed as these electro-optical devices. As a result, it is possible to provide the head-mounted display  300  in which the sealing performance of the sub-pixels PxR, PxG is improved, the intrusion of moisture, etc. is suppressed, and the reliability is improved. 
     As illustrated in  FIG. 13 , a personal computer  400  as an electronic apparatus of the present exemplary embodiment includes the organic EL device  1  of the above-described exemplary embodiment for displaying various images, and a main body  403  provided with a power switch  401  and a keyboard  402 . As a result, it is possible to provide the personal computer  400  in which the sealing performance of the sub-pixels PxP, PxG is improved, the intrusion of moisture, etc. is suppressed, and the reliability is improved. 
     In addition to the electronic apparatuses described above, examples of electronic apparatuses in which the electro-optical device of the present disclosure is adopted include a mobile phone, a smart phone, a personal digital assistant (PDA), a digital still camera, a television, a video camera, a car navigation device, a display such as an in-vehicle instrument panel, an electronic organizer, electronic paper, a calculator, a word processor, a workstation, a television phone, and a POS (Point Of Sale) terminal, etc. Further, the organic EL device as the electro-optical device of the above exemplary embodiment can be applied as a display unit provided at an electric device such as a printer, a scanner, a copying machine, and a video player.