JP2018125168A - Electro-optic device and electronic equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress the worsening of display quality owing to the presence of a non-luminescent region in a pixel block.SOLUTION: An electro-optic device comprises: a first pixel having a first light-emitting element, a first supply circuit for supplying a current to the first light-emitting element, and a first contact for electrically connecting the first light-emitting element with the first supply circuit; a second pixel having a second light-emitting element, a second supply circuit for supplying a current to the second light-emitting element, and a second contact for electrically connecting the second light-emitting element with the second supply circuit; and a substrate with the first and second supply circuits formed thereon. When viewed from a direction perpendicular to the substrate, a light emission region including the first and second light-emitting elements is located between the first and second contacts.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an electro-optical device and an electronic apparatus.

  In recent years, various electro-optical devices that display images using pixels having light-emitting elements such as organic EL (electro luminescent) elements have been proposed. In such an electro-optical device, one display unit is generally formed by a pixel block composed of a plurality of pixels. For example, Patent Document 1 discloses that a full-color image can be displayed by forming one display unit with a pixel block including pixels that display red, pixels that display green, and pixels that display blue. An electro-optical device is disclosed.

JP 2006-120477 A

  Incidentally, a pixel provided in the electro-optical device includes a supply circuit for supplying a current to the light emitting element, a light emitting element, and a contact for electrically connecting the supply circuit and the light emitting element. In general, when viewed from a direction perpendicular to the substrate on which the supply circuit is formed, the light-emitting element is provided in a region different from a region where the contact is provided. Therefore, generally, the pixel block provided in the electro-optical device includes a light emitting region including a plurality of light emitting elements included in the pixel block, and a non-light emitting region (contact region) including a plurality of contacts included in the pixel block. , Is included. For this reason, when a non-light emitting area is provided near the center of the light emitting area in the pixel block as in Patent Document 1, the non light emitting area exists in one display unit realized by the pixel block. As a result, the display quality of the electro-optical device may be degraded.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a technique for suppressing a decrease in display quality due to the presence of a non-light emitting area in a pixel block.

  In order to solve the above problems, an electro-optical device according to the present invention includes a first light emitting element, a first supply circuit that supplies current to the first light emitting element, the first light emitting element, A first pixel comprising a first contact for electrically connecting the first supply circuit; a second light emitting element; a second supply circuit for supplying current to the second light emitting element; A second pixel having a second contact for electrically connecting the second light emitting element and the second supply circuit, and the first supply circuit and the second supply circuit. And a light emitting region including the first light emitting element and the second light emitting element is located between the first contact and the second contact when viewed from a direction perpendicular to the substrate. It is characterized by that.

  According to the present invention, since the first contact and the second contact are provided outside the outer periphery of the light emitting region, compared with the case where the first contact or the second contact is provided inside the outer periphery of the light emitting region, The display quality of the electro-optical device can be increased.

  The electro-optical device described above includes a first pixel block and a second pixel block adjacent to the first pixel block, and the first pixel block includes the first pixel and the first pixel block. A second pixel, a third light emitting element, a third supply circuit for supplying a current to the third light emitting element, and a third electrically connecting the third light emitting element and the third supply circuit. A third pixel having three contacts, wherein the second pixel block includes a fourth light emitting element, a fourth supply circuit for supplying current to the fourth light emitting element, and the A fourth pixel having a fourth contact electrically connecting the fourth light emitting element and the fourth supply circuit, and when viewed from a direction perpendicular to the substrate, the light emitting region is Including the third light emitting element, the first contact, and the third contact. Ntakuto, and a contact region including the fourth contact, positioned between the second contact may be characterized in that.

  According to this aspect, since the contact region is provided outside the outer periphery of the light emitting region, the display quality of the electro-optical device is improved as compared with the case where the contact region is provided inside the outer periphery of the light emitting region. Is possible.

  In the above-described electro-optical device, the first contact is positioned in the first direction as viewed from the third contact, and the fourth contact is in the first direction as viewed from the second contact. It is good to be characterized by being located in the 2nd direction which intersects, and being located between the 1st contact and the 3rd contact.

  According to this aspect, since the first contact, the third contact, and the fourth contact are linearly arranged, the first contact, the third contact, and the fourth contact are linear. Compared to the case where the light emitting regions are not arranged, the area of the light emitting region can be increased, and the luminance of the image displayed by the electro-optical device can be increased.

  In the electro-optical device described above, the third light emitting element is larger than the first light emitting element and larger than the second light emitting element when viewed from a direction perpendicular to the substrate. May be a feature.

  According to this aspect, when the first pixel, the second pixel, and the third pixel display different colors, the area of the pixel that displays a color with low visibility is increased. The area of the pixel for displaying the color can be made larger, and the electro-optical device can display the correct color.

  In the electro-optical device described above, the first light emitting element includes a common electrode, a first pixel electrode, and a light emitting functional layer provided between the common electrode and the first pixel electrode, The first supply circuit is electrically connected to one of a first transistor for supplying current to the first light emitting element and a source or a drain of the first transistor, and the first light emitting element. A first reflective electrode for reflecting the light emitted from the first electrode, wherein the first contact electrically connects the first pixel electrode and the first reflective electrode; The light-emitting element includes the common electrode, the second pixel electrode, and a light-emitting functional layer provided between the common electrode and the second pixel electrode, and the second supply circuit includes the second supply circuit A second for supplying current to the light emitting element; A second reflective electrode that is electrically connected to one of the source and drain of the transistor and the second transistor and reflects light emitted from the second light emitting element; The contact may electrically connect the second pixel electrode and the second reflective electrode.

  According to this aspect, since the pixel includes the reflective electrode, the luminance of the light emitted from the light emitting element can be increased.

  In addition to the electro-optical device, the present invention can be conceptualized as an electronic apparatus including the electro-optical device. Typically, the electronic device includes a display device such as a head mounted display (HMD) or an electronic viewfinder.

1 is a block diagram illustrating an example of a configuration of an electro-optical device 1 according to an embodiment of the present invention. It is an equivalent circuit diagram which shows an example of a structure of the pixel Px. 3 is a plan view illustrating an example of a configuration of a display unit 12. FIG. 4 is a partial cross-sectional view showing an example of a configuration of a display unit 12. FIG. 12 is an equivalent circuit diagram illustrating an example of a configuration of a pixel Px according to Modification Example 1. FIG. It is a perspective view of the head mounted display 300 concerning the present invention. It is a perspective view of the personal computer 400 concerning this invention.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. However, in each figure, the size and scale of each part are appropriately changed from the actual ones. Further, since the embodiments described below are preferable specific examples of the present invention, various technically preferable limitations are attached thereto. However, the scope of the present invention is particularly limited in the following description. Unless otherwise stated, the present invention is not limited to these forms.

<< A. Embodiment >>
Hereinafter, the electro-optical device 1 according to the present embodiment will be described.

<< 1. Outline of electro-optical device >>
FIG. 1 is a block diagram illustrating an example of the configuration of the electro-optical device 1 according to the present embodiment.
As illustrated in FIG. 1, the electro-optical device 1 includes a display panel 10 having a plurality of pixels Px, and a control circuit 20 that controls the operation of the display panel 10.

Digital image data Video is supplied to the control circuit 20 from a host device (not shown) in synchronization with a synchronization signal. Here, the image data Video is digital data defining the gradation level to be displayed by each pixel Px of the display panel 10. The synchronization signal is a signal including a vertical synchronization signal, a horizontal synchronization signal, a dot clock signal, and the like.
The control circuit 20 generates a control signal Ctr for controlling the operation of the display panel 10 based on the synchronization signal, and supplies the generated control signal Ctr to the display panel 10. 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 that defines the luminance of the light emitting element included in the pixel Px so that each pixel Px displays the gradation specified by the image data Video.

As illustrated in FIG. 1, the display panel 10 includes M scanning lines 13 extending in the + X direction, 3N data lines 14 extending in the + Y direction, and M scanning lines 13 and 3N. A display unit 12 having “M × 3N” pixels Px arranged corresponding to the intersections with the data line 14 and a drive circuit 11 for driving the display unit 12 (M is a natural number of 1 or more). N is a natural number of 1 or more).
Hereinafter, in order to distinguish the plurality of pixels Px, the plurality of scanning lines 13 and the plurality of data lines 14 from each other, the + Y direction to the −Y direction (hereinafter, the + Y direction and the −Y direction are referred to as “Y-axis direction”). In order, the first row, the second row,..., The Mth row, and the −X direction to the + X direction (hereinafter, the + X direction and the −X direction are collectively referred to as the “X-axis direction”). The first column, the second column,..., And the third N column are referred to in order. Hereinafter, the + Z direction (upward direction) and the −Z direction (downward direction) intersecting the X-axis direction and the Y-axis direction are collectively referred to as “Z-axis direction”.
In the present embodiment, the + Y direction is an example of a “first direction”, and the + X direction is an example of a “second direction”.

The plurality of pixels Px provided in the display unit 12 include a pixel PxR that can display red (R), a pixel PxG that can display green (G), and a pixel PxB that can display blue (B). It is. In this embodiment, n is “a natural number satisfying 1 ≦ n ≦ N”, and the pixels PxR are arranged in the (3n−2) -th column among the first to third N-th columns, and the (3n− 1) A case where a pixel PxG is arranged in a column and a pixel PxB is arranged in a third n column is assumed as an example.
In the following description, m is “a natural number satisfying 1 ≦ m ≦ M”, k is “a natural number satisfying 1 ≦ k ≦ 3N”, and the pixel Px in the m-th row and the k-th column is defined as a pixel Px [m] [ k]. That is, in the present embodiment, for example, the pixel PxR can be expressed as a pixel PxR [m] [3n-2], and the pixel PxG can be expressed as a pixel PxG [m] [3n-1]. The pixel PxB can be expressed as a pixel PxB [m] [3n].
In the present embodiment, the three pixels PxR, PxG, and PxB adjacent in the X-axis direction may be referred to as a pixel block BL. That is, in the present embodiment, it is assumed that the display unit 12 has M rows × N columns of pixel blocks BL arranged in a matrix. Hereinafter, the pixel block BL including the pixel PxR [m] [3n-2], the pixel PxG [m] [3n-1], and the pixel PxB [m] [3n] is referred to as the pixel block BL [m] [n ] May be called.

  As illustrated in FIG. 1, the drive circuit 11 includes a scanning line drive circuit 111 and a data line drive circuit 112.

  The scanning line driving circuit 111 scans (selects) the scanning lines 13 in the first to Mth rows in order. Specifically, the scanning line driving circuit 111 horizontally outputs the scanning signals Gw [1] to Gw [M] to be output to each of the first to Mth scanning lines 13 in the period of one frame. By setting a predetermined selection potential in order for each scanning period, the scanning lines 13 are sequentially selected in units of rows for each horizontal scanning period. In other words, the scanning line driving circuit 111 sets the scanning signal Gw [m] to be output to the scanning line 13 of the m-th row to a predetermined selection potential in the m-th horizontal scanning period in one frame period. Thus, the m-th row scanning line 13 is selected. Note that the period of one frame is a period in which the electro-optical device 1 displays one image.

The data line driving circuit 112 is based on the image signal Vid and the control signal Ctr supplied from the control circuit 20, and analog data signals Vd [1] to Vd [3N] that define the gradation to be displayed by each pixel Px. And the generated data signals Vd [1] to Vd [3N] are output to 3N data lines 14 every horizontal scanning period. In other words, the data line driving circuit 112 outputs the data signal Vd [k] to the data line 14 in the kth column in each horizontal scanning period.
In the present embodiment, the image signal Vid output from the control circuit 20 is an analog signal, but the image signal Vid output from the control circuit 20 may be a digital signal. In this case, the data line driving circuit 112 D / A converts the image signal Vid to generate analog data signals Vd [1] to Vd [3N].

  FIG. 2 is an equivalent circuit diagram showing an example of the configuration of the pixel circuit 100 provided in one-to-one correspondence with each pixel Px. In the present embodiment, the plurality of pixel circuits 100 corresponding to the plurality of pixels Px are electrically identical in configuration. In FIG. 2, the pixel circuit 100 provided corresponding to the pixel Px [m] [k] in the m-th row and the k-th column will be described as an example.

  The pixel circuit 100 includes a light emitting element 3 and a supply circuit 40 for supplying current to the light emitting element 3.

The light emitting element 3 includes a pixel electrode 31, a light emitting functional layer 32, and a common electrode 33. The pixel electrode 31 functions as an anode that supplies holes to the light emitting functional layer 32. The common electrode 33 is electrically connected to the power supply line 16 set to the potential Vct that is the power supply potential on the low potential side of the pixel circuit 100, and functions as a cathode that supplies electrons to the light emitting functional layer 32. Then, the holes supplied from the pixel electrode 31 and the electrons supplied from the common electrode 33 are combined by the light emitting functional layer 32, and the light emitting functional layer 32 emits white light.
Although details will be described later, a red color filter 81R is placed on the light emitting element 3 (hereinafter referred to as the light emitting element 3R) included in the pixel PxR, and the light emitting element 3 included in the pixel PxG (hereinafter referred to as the light emitting element). 3G) is overlaid with a green color filter 81G, and a blue color filter 81B is overlaid on the light-emitting element 3 (hereinafter referred to as light-emitting element 3B) of the pixel PxB. For this reason, full color display is possible by the pixels PxR, PxG, and PxB.

  The supply circuit 40 includes P-channel transistors 41 and 42 and a storage capacitor 44. Note that one or both of the transistors 41 and 42 may be an N-channel transistor. In this embodiment, the transistors 41 and 42 are described as examples of thin film transistors. However, the transistors 41 and 42 are field effect transistors such as MOSFETs (metal-oxide-semiconductor field-effect transistors). May be.

The transistor 41 has a gate electrically connected to the m-th row scanning line 13, one source or drain electrically connected to the k-th column data line 14, and the other source or drain connected to the transistor 42 is electrically connected to one of the two electrodes of the storage capacitor 44.
The transistor 42 has a gate electrically connected to the other of the source and drain of the transistor 41 and one electrode of the storage capacitor 44, and one of the source and drain is electrically connected to the pixel electrode 31, The other of the source and the drain is electrically connected to the power supply line 15 set to the potential Vel that is the power supply potential on the high potential side of the pixel circuit 100.
The storage capacitor 44 has one electrode out of two electrodes of the storage capacitor 44 that is electrically connected to the other of the source and drain of the transistor 41 and the gate of the transistor 42, and the storage capacitor 44 has two electrodes The other electrode of the electrodes is electrically connected to the feeder line 15. The storage capacitor 44 functions as a storage capacitor that holds the potential of the gate of the transistor 42.

When the scanning line driving circuit 111 sets the scanning signal Gw [m] to a predetermined selection potential and selects the scanning line 13 in the m-th row, the scanning line driving circuit 111 provides the pixel Px [m] [k] in the m-th row and the k-th column. Transistor 41 is turned on. When the transistor 41 is turned on, the data signal Vd [k] is supplied from the data line 14 in the k-th column to the gate of the transistor 42. In this case, the transistor 42 supplies a current corresponding to the potential of the data signal Vd [k] supplied to the gate (more precisely, the potential difference between the gate and the source) to the light emitting element 3. The light emitting element 3 emits light with luminance corresponding to the magnitude of the current supplied from the transistor 42, that is, luminance corresponding to the potential of the data signal Vd [k].
After that, when the scanning line driving circuit 111 cancels the selection of the scanning line 13 in the m-th row and the transistor 41 is turned off, the potential of the gate of the transistor 42 is held by the storage capacitor 44. For this reason, the light emitting element 3 can emit light with a luminance corresponding to the data signal Vd [k] even after the transistor 41 is turned off.

  Although not shown in FIG. 2, a component for electrically connecting the pixel electrode 31 included in the light emitting element 3 and the supply circuit 40 is referred to as a contact 7 (see FIG. 4). More specifically, the contact 7 electrically connects the pixel electrode 31 included in the light emitting element 3 and the supply circuit 40. Hereinafter, the contact 7 provided in the pixel PxR may be referred to as a contact 7R, the contact 7 provided in the pixel PxG may be referred to as a contact 7G, and the contact 7 provided in the pixel PxB may be referred to as a contact 7B. .

<< 2. Display configuration >>
Hereinafter, an example of the configuration of the display unit 12 according to the present embodiment will be described with reference to FIGS. 3 and 4.

FIG. 3 shows an example of a schematic configuration of the display unit 12 when a part of the display unit 12 according to the present embodiment is viewed in plan from the + Z direction that is the direction in which the electro-optical device 1 emits light. It is a top view.
Specifically, FIG. 3 illustrates the pixel block BL [m] [n] and the pixel block BL [m] [n +] adjacent to the + X side of the pixel block BL [m] [n] in the display unit 12. 1], a pixel block BL [m] [n-1] adjacent to the −X side of the pixel block BL [m] [n], and a pixel adjacent to the −Y side of the pixel block BL [m] [n] A block BL [m + 1] [n], a pixel block BL [m + 1] [n + 1] adjacent to the pixel block BL [m + 1] [n] on the + X side, and a pixel block BL [m +] 1] [n] is a pixel block BL [m + 1] [n-1] adjacent to the −X side. As described above, the pixel block BL [m] [n] includes the pixel PxR [m] [3n-2], the pixel PxG [m] [3n-1], and the pixel PxB [m] [3n]. The pixel block BL [m] [n + 1] includes a pixel PxR [m] [3n + 1], a pixel PxG [m] [3n + 2], and a pixel PxB [m] [3n + 3]. The pixel block BL [m] [n-1] includes a pixel PxR [m] [3n-5], a pixel PxG [m] [3n-4], and a pixel PxB [m] [3n-3]. Including.

  In the present embodiment, as shown in FIG. 3, in each pixel block BL, the light emitting element 3R provided in the pixel PxR is located in the + Y direction of the light emitting element 3B provided in the pixel PxB and is provided in the pixel PxG. The light emitting element 3G is located in the + Y direction of the light emitting element 3B provided in the pixel PxB, and the light emitting element 3G provided in the pixel PxG is located in the + X direction of the light emitting element 3R provided in the pixel PxR. Suppose. In this embodiment, it is assumed that a light emitting region H that emits light in the + Z direction is formed by the light emitting elements 3R, 3G, and 3B included in each pixel block BL. Hereinafter, the light emitting region H formed by the three light emitting elements 3 included in the pixel block BL [m] [n] is referred to as a light emitting region H [m] [n]. In the present embodiment, it is assumed that the light emitting element 3B is larger than the light emitting element 3R and the light emitting element 3B is larger than the light emitting element 3G in plan view.

In this embodiment, as shown in FIG. 3, the contact 7G included in the pixel PxG belonging to the pixel block BL [m] [n] is the contact 7B included in the pixel PxB belonging to the pixel block BL [m] [n]. Is located in the + Y direction. In this embodiment, the contact 7R included in the pixel PxR belonging to the pixel block BL [m] [n + 1] is positioned in the + X direction of the contact 7R included in the pixel PxR belonging to the pixel block BL [m] [n]. To do. In this embodiment, the contact 7R included in the pixel PxR belonging to the pixel block BL [m] [n + 1] is the same as the contact 7G included in the pixel PxG belonging to the pixel block BL [m] [n]. It is located between the contacts 7B of the pixels PxB belonging to [m] [n]. That is, in the present embodiment, the contact 7B of the pixel PxB belonging to the pixel block BL [m] [n], the contact 7R of the pixel PxR belonging to the pixel block BL [m] [n + 1], and the pixel block BL The contacts 7G of the pixels PxG belonging to [m] [n] are linearly arranged in the + Y direction, and these three contacts 7 form one contact region C [m] [n].
For this reason, in the present embodiment, as shown in FIG. 3, the light emission regions H [m] [n] included in the pixel block BL [m] [n] Contact region C [m] [n] formed by the contact 7 (7G, 7B) and one contact 7 (7R) of the pixel block BL [m] [n + 1], and the pixel block A contact region formed by two contacts 7 (7G, 7B) included in BL [m] [n-1] and one contact 7 (7R) included in the pixel block BL [m] [n] C [m] [n-1].

  FIG. 4 is an example of a partial cross-sectional view of the display unit 12 taken along line Ee in FIG.

  As shown in FIG. 4, 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. In the present embodiment, as described above, it is assumed that the electro-optical device 1 is a top emission method in which light is emitted from the protective substrate 9 side (+ Z side).

The adhesive layer 90 is a transparent resin layer for bonding the element substrate 5 and the protective substrate 9. The adhesive layer 90 is formed using, for example, a transparent resin material such as an epoxy resin or an acrylic resin.
The protective substrate 9 is a transparent substrate disposed on the + Z side of the adhesive layer 90. As the protective substrate 9, for example, a quartz substrate or a glass substrate can be employed.

  The element substrate 5 includes a substrate 50, and a wiring layer L, a distance adjustment layer 70, a light emitting layer 30, a sealing layer 60, and a color filter layer 80 stacked on the substrate 50. Although details will be described later, the light emitting layer 30 includes the light emitting element 3 (3R, 3G, 3B) described above. The light emitting element 3 emits light in the + Z direction and the −Z direction. The color filter layer 80 includes the color filter 81R, the color filter 81G, and the color filter 81B described above.

  The substrate 50 is a plate-like member formed of glass, plastic, silicon, quartz, or the like. A wiring layer L is formed on the + Z side of the substrate 50.

  The wiring layer L includes various wirings such as the scanning line 13, the data line 14, the power supply line 15, and the power supply line 16, and various circuits such as the drive circuit 11 and the supply circuit 40.

In FIG. 4, the transistor 42 provided in the supply circuit 40 in the wiring layer L is illustrated as an example.
Specifically, in the example shown in FIG. 4, the semiconductor layer of the transistor 42, that is, the channel region 42 c, the source region 42 s, and the drain region 42 d of the transistor 42 are formed on the substrate 50. An insulating layer L0 is formed so as to cover the semiconductor layer of the transistor.
In the example shown in FIG. 4, the gate electrode 42g of the transistor 42 is formed on the insulating layer L0, and the insulating layer L1 is formed so as to cover the insulating layer L0 and the gate electrode 42g.
In the example shown in FIG. 4, the relay nodes T21 and T22 made of a conductive material are formed on the insulating layer L1, and the insulating layer L2 is formed so as to cover the insulating layer L1 and the relay nodes T21 and T22. Is formed. Among these, the relay node T21 is electrically connected to the drain region 42d through the contact plug W11 penetrating the insulating layer L0 and the insulating layer L1, and the relay node T22 is connected to the insulating layer L0 and the insulating layer L1. It is electrically connected to the source region 42s through a contact plug W12 that penetrates. Although not shown in FIG. 4, the relay node T22 is electrically connected to the feeder line 15.

As shown in FIG. 4, a distance adjustment layer 70 is formed on the + Z side of the wiring layer L. The distance adjustment layer 70 includes a reflective electrode 71 formed on the insulating layer L2, and an insulating layer 72 formed so as to cover the reflective electrode 71 and the insulating layer L2.
Among these, the reflective electrode 71 is formed using a highly reflective conductive material such as aluminum or silver. The reflective electrode 71 is electrically connected to the relay node T21 via a contact 7 penetrating the insulating layer L2.
The insulating layer 72 is an insulating transparent layer for adjusting the optical distance between the light emitting element 3 of the light emitting layer 30 and the reflective electrode 71. The insulating layer 72 is formed using an insulating transparent material such as silicon oxide (SiOx).
Of the various components shown in FIG. 4, the transistor 42, the relay nodes T 21 and T 22, the contact plugs W 11, W 12 and W 21, and the reflective electrode 71 correspond to the supply circuit 40.

As shown in FIG. 4, the light emitting layer 30 is formed on the + Z side of the insulating layer 72.
The light emitting layer 30 includes a pixel electrode 31 formed on the insulating layer 72, an insulating film 34 formed on the insulating layer 72 and the pixel electrode 31, and a light emission formed so as to cover the pixel electrode 31 and the insulating film 34. The functional layer 32 and the common electrode 33 formed on the light emitting functional layer 32 are included.
The pixel electrode 31 is a conductive transparent layer that is individually formed in an island shape for each pixel Px. The pixel electrode 31 is formed using a conductive transparent material such as ITO (Indium Tin Oxide) or IZO (Indium Zinc Oxide).
The insulating film 34 is an insulating component arranged so as to cover the peripheral edge of each pixel electrode 31. The insulating film 34 is formed using an insulating material such as silicon oxide.
The common electrode 33 is a conductive component having both light transparency and light reflectivity, which is disposed so as to straddle a plurality of pixels Px. The common electrode 33 is formed using, for example, an alloy of Mg and Ag.
The light emitting functional layer 32 includes a hole injection layer, a hole transport layer, an organic light emitting layer, and an electron transport layer, and is disposed so as to straddle a plurality of pixels Px. As described above, the light emitting functional layer 32 emits white light when holes are supplied from a portion of the pixel electrode 31 that is not covered with the insulating film 34. That is, the portion of the light emitting layer 30 in which the pixel electrode 31 is not covered with the insulating film 34 corresponds to the light emitting element 3 when viewed in plan. In other words, the insulating film 34 partitions two light emitting elements 3 adjacent to each other.
In the present embodiment, the region where the light emitting element 3 is provided and the region where the contact 7 is provided are regarded as the pixel Px when viewed in plan.

In the present embodiment, the thickness of the insulating layer 72 is adjusted so that the optical resonance structure is formed by the reflective electrode 71 and the common electrode 33. The light emitted from the light emitting functional layer 32 is repeatedly reflected between the reflective electrode 71 and the common electrode 33, and the intensity of light having a wavelength corresponding to the optical distance between the reflective electrode 71 and the common electrode 33. Is enhanced, and the enhanced light is emitted to the + Z side through the common electrode 33 to the protective substrate 9.
In this embodiment, as an example, the intensity of light having a wavelength of 610 nm is increased in the pixel PxR, the intensity of light having a wavelength of 540 nm is increased in the pixel PxG, and the light having a wavelength of 470 nm is increased in the pixel PxB. The film thickness of the insulating layer 72 is set for each pixel Px so as to increase the intensity. For this reason, in the present embodiment, the pixel PxR emits red light that maximizes the luminance of light having a wavelength of 610 nm, and the pixel PxG emits green light that maximizes the luminance of light having a wavelength of 540 nm. As a result, the pixel PxB emits blue light having the maximum luminance of light having a wavelength of 470 nm.

The sealing layer 60 includes a lower sealing layer 61 formed on the common electrode 33, a planarizing layer 62 formed on the lower sealing layer 61, and an upper sealing layer formed on the planarizing layer 62. A stop layer 63.
The lower sealing layer 61 and the upper sealing layer 63 are insulating transparent layers arranged so as to straddle the plurality of pixels Px. The lower sealing layer 61 and the upper sealing layer 63 are constituent elements for suppressing intrusion of moisture, oxygen, or the like into the light emitting layer 30, for example, silicon oxide (SiOx), silicon nitride (SiNx), or And an inorganic material such as aluminum oxide (AlxOy).
The planarization layer 62 is a transparent layer arranged so as to straddle a plurality of pixels Px, and is a component for providing a flat upper surface (a surface on the + Z side). The planarization layer 62 is formed using, for example, a resin material such as an epoxy resin, an acrylic resin, a urethane resin, or a silicon resin, or an inorganic material such as a silicon oxide.

The color filter layer 80 includes a color filter 81R, a color filter 81G, a color filter 81B, and a convex portion 82.
As shown in FIG. 4, the color filter 81R is formed on the upper sealing layer 63 so as to cover the light emitting element 3R in plan view on the + Z side of the light emitting element 3R. The color filter 81G is formed on the upper sealing layer 63 so as to cover the light emitting element 3G in plan view on the + Z side of the light emitting element 3G. The color filter 81B is formed on the upper sealing layer 63 so as to cover the light emitting element 3B in plan view on the + Z side of the light emitting element 3B. In the present embodiment, the convex portion 82 is formed on the upper sealing layer 63 so as to cover the contact 7 in plan view on the + Z side of the contact 7.
The color filter 81R is formed from a photosensitive resin material containing a red color material, the color filter 81G is formed from a photosensitive resin material containing a green color material, and the color filter 81B is a blue color material. It is formed from the photosensitive resin material containing. Moreover, the convex part 82 is formed using the transparent photosensitive resin material which does not contain a color material, for example, acrylic resin. The photosensitive resin material employed as the convex portion 82 may be the same material as the main material of the color filters 81R, 81G, and 81B.

  As shown in FIG. 4, an adhesive layer 90 is provided on the + Z side of the color filter layer 80 so as to cover the color filter layer 80, and a protective substrate 9 is provided on the + Z side of the adhesive layer 90.

<< 3. Effects of the embodiment >>
In general, a pixel block BL including pixels PxR, PxG, and PxB can be arbitrarily selected using three colors of light emitted from the light emitting elements 3R, 3G, and 3B provided in the pixel block BL. Display color. That is, one display unit is formed by the light emitting region H including the light emitting elements 3R, 3G, and 3B provided in the pixel block BL. Therefore, it is preferable that the contact region C which is a non-light emitting region is not provided inside the outer periphery of the light emitting region H which is one display unit.
On the other hand, in this embodiment, since the contact region C is provided outside the outer periphery of the light emitting region H, compared with the case where the contact region C is provided inside the outer periphery of the light emitting region H, The display quality of the electro-optical device 1 can be increased.

In the present embodiment, for example, the pixel block BL [m] [n] corresponds to the “first pixel block”, and the pixel block BL [m] adjacent to the pixel block BL [m] [n] in the + X direction. ] [n + 1] corresponds to the “second pixel block”.
In this case, among the three pixels Px provided in the pixel block BL [m] [n], which is the “first pixel block”, the pixel PxG [m] [3n−1] is the “first pixel block”. Pixel PxR [m] [3n-2] corresponds to “second pixel”, pixel PxB [m] [3n] corresponds to “third pixel”, “second pixel” Of the three pixels Px provided in the pixel block BL [m] [n + 1], which is a “block”, the pixel PxR [m] [3n + 1] corresponds to the “fourth pixel”.
Then, the light emitting element 3G, the contact 7G, and the supply circuit 40 included in the pixel PxG [m] [3n-1] that is the “first pixel” are respectively referred to as “first light emitting element”, “first light emitting element”, The light emitting element 3R, the contact 7R, and the supply circuit 40 included in the pixel PxR [m] [3n-2] corresponding to the “contact” and the “first supply circuit” Corresponding to “second light emitting element”, “second contact”, “second supply circuit”, the light emitting element 3B and the contact 7B provided in the pixel PxB [m] [3n] which is the “third pixel” , And the supply circuit 40 correspond to a “third light emitting element”, a “third contact”, and a “third supply circuit”, respectively, and the pixel PxR [m] [ 3n + 1] includes a light emitting element 3R, a contact 7R, and a supply circuit 40, which are referred to as “fourth light emitting element”, “fourth contact”, “ Corresponding to the supply circuit "of.
In addition, the pixel PxG [m] [3n-1], which is the “first pixel”, includes the pixel electrode 31, the transistor 42, and the reflective electrode 71, which are the “first pixel electrode” and the “first pixel”, respectively. The pixel electrode 31, the transistor 42, and the reflective electrode 71 included in the pixel PxR [m] [3n-2], which corresponds to the “transistor of the transistor” and “first reflective electrode” and is the “second pixel”. These correspond to “second pixel electrode”, “second transistor”, and “second reflective electrode”, respectively.

<< B. Modification >>
Each of the above forms can be variously modified. Specific modifications are exemplified below. Two or more aspects arbitrarily selected from the following examples can be appropriately combined within a range that does not contradict each other. In addition, about the element in which an effect | action and a function are equivalent to embodiment in the modification illustrated below, the code | symbol referred by the above description is diverted and each detailed description is abbreviate | omitted suitably.

<< Modification 1 >>
In the embodiment described above, the pixel circuit 100 includes the transistors 41 and 42. However, the present invention is not limited to such a mode, and the pixel circuit 100 includes transistors other than the transistors 41 and 42. Also good.
FIG. 5 is an equivalent circuit diagram showing an example of the configuration of the pixel circuit 100A included in the pixel Px according to this modification. As shown in this figure, the pixel circuit 100A has the same configuration as the pixel circuit 100 shown in FIG. 2 except that a supply circuit 40A is provided instead of the supply circuit 40. The supply circuit 40A has the same configuration as the supply circuit 40 shown in FIG. In the transistor 45, one of a source and a drain is electrically connected to the pixel electrode 31 through the contact 7, and the other of the source and the drain is electrically connected to one of the source and the drain of the transistor 42. Further, a light emission control signal Gel [m] is supplied from the drive circuit 11 to the gate of the transistor 45 included in the pixel Px in the m-th row. Thereby, the drive circuit 11 controls the on / off of the transistor 45 using the light emission control signal Gel [m].
When the pixel Px includes the pixel circuit 100A illustrated in FIG. 5, the transistor 45 included in the “first pixel” corresponds to the “first transistor”, and the transistor 45 included in the “second pixel” includes “ This corresponds to a “second transistor”.

<< Modification 2 >>
In the embodiment and the modification described above, the pixel PxG is provided on the + X side of the pixel PxR in each pixel block BL. However, the present invention is not limited to such a mode, and the pixel on the + X side of the pixel PxG. PxR may be provided. Specifically, in FIG. 3, the light emitting element 3G and the contact 7G are provided in the regions indicated by reference signs “3R” and “7R”, respectively, and the regions indicated by reference signs “3G” and “7G” are provided respectively. A light emitting element 3R and a contact 7R may be provided. In this case, among the three pixels Px provided in the “first pixel block”, the pixel PxR corresponds to the “first pixel”, the pixel PxG corresponds to the “second pixel”, and the pixel PxB Corresponds to the “third pixel”, and among the three pixels Px provided in the “second pixel block”, the pixel PxG corresponds to the “fourth pixel”. In this case, of the three contacts 7 provided in the “first pixel block”, the contact 7R corresponds to the “first contact”, the contact 7G corresponds to the “second contact”, The contact 7B corresponds to a “third contact”, and among the three contacts 7 provided in the “second pixel block”, the contact 7G corresponds to a “fourth contact”.
In the above-described embodiment and modification, the pixel PxR and the pixel PxG are provided on the + Y side of the pixel PxB in each pixel block BL. However, the present invention is not limited to such an embodiment, and the pixel PxB The pixel PxR and the pixel PxG may be provided on the −Y side.

<< C. Application example >>
The electro-optical device 1 according to the above-described embodiments and modifications can be applied to various electronic apparatuses. The electronic apparatus according to the present invention will be described below.

FIG. 6 is a perspective view showing an appearance of a head mounted display 300 as an electronic apparatus employing the electro-optical device 1 of the present invention. As shown in FIG. 6, the head mounted display 300 includes a temple 310, a bridge 320, a projection optical system 301L, and a projection optical system 301R. In FIG. 6, the left-eye electro-optical device 1 (not shown) is provided in the back of the projection optical system 301L, and the right-eye electro-optical device 1 (not shown) in the back of the projection optical system 301R. Is provided.
FIG. 7 is a perspective view of a portable personal computer 400 that employs the electro-optical device 1. The personal computer 400 includes the electro-optical device 1 that displays various images, and a main body 403 provided with a power switch 401 and a keyboard 402.
The electronic apparatus to which the electro-optical device 1 according to the present invention is applied includes, in addition to the apparatuses illustrated in FIGS. 6 and 7, a mobile phone, a smartphone, a personal digital assistant (PDA), a digital still camera. TV, video camera, car navigation device, vehicle-mounted display (instrument panel), electronic notebook, electronic paper, calculator, word processor, workstation, videophone, POS terminal, and the like. Furthermore, the electro-optical device 1 according to the present invention can be applied as a display unit provided in an electronic apparatus such as a printer, a scanner, a copying machine, and a video player.

DESCRIPTION OF SYMBOLS 1 ... Electro-optical device, 3 ... Light emitting element, 5 ... Element board | substrate, 7 ... Contact, 9 ... Protection board, 10 ... Display panel, 11 ... Drive circuit, 12 ... Display part, 14 ... Data line, 20 ... Control circuit, DESCRIPTION OF SYMBOLS 30 ... Light emitting layer, 31 ... Pixel electrode, 32 ... Light emission functional layer, 33 ... Common electrode, 40 ... Supply circuit, 41 ... Transistor, 42 ... Transistor, 44 ... Retention capacity, 50 ... Substrate, 70 ... Distance adjustment layer, 71 ... reflective electrode, BL ... pixel block, C ... contact region, H ... light emitting region, Px ... pixel, PxR ... pixel, PxG ... pixel, PxB ... pixel.

Claims (6)

A first light emitting element, a first supply circuit for supplying a current to the first light emitting element, and a first contact for electrically connecting the first light emitting element and the first supply circuit; A first pixel comprising;
A second light emitting element, a second supply circuit for supplying a current to the second light emitting element, and a second contact for electrically connecting the second light emitting element and the second supply circuit, A second pixel comprising;
A substrate on which the first supply circuit and the second supply circuit are formed;
With
When viewed from a direction perpendicular to the substrate,
A light emitting region including the first light emitting element and the second light emitting element is located between the first contact and the second contact;
An electro-optical device. A first pixel block;
A second pixel block adjacent to the first pixel block;
With
The first pixel block is:
The first pixel;
The second pixel;
A third light emitting element, a third supply circuit for supplying a current to the third light emitting element, and a third contact for electrically connecting the third light emitting element and the third supply circuit, A third pixel comprising;
With
The second pixel block is:
A fourth light emitting element, a fourth supply circuit for supplying current to the fourth light emitting element, and a fourth contact for electrically connecting the fourth light emitting element and the fourth supply circuit, A fourth pixel comprising,
When viewed from a direction perpendicular to the substrate,
The light emitting region is
Including the third light emitting element;
Located between the second contact and the contact region including the first contact, the third contact, and the fourth contact,
The electro-optical device according to claim 1. The first contact is:
Located in a first direction as viewed from the third contact;
The fourth contact is:
Located in a second direction intersecting the first direction when viewed from the second contact, and
Located between the first contact and the third contact;
The electro-optical device according to claim 2. When viewed from a direction perpendicular to the substrate,
The third light emitting element is:
Larger than the first light emitting element and larger than the second light emitting element;
The electro-optical device according to claim 2, wherein the electro-optical device is provided. The first light emitting element includes:
A light emitting functional layer provided between the common electrode, the first pixel electrode, and the common electrode and the first pixel electrode;
The first supply circuit includes:
Reflects light emitted from the first light emitting element that is electrically connected to one of the first transistor for supplying current to the first light emitting element and the source or drain of the first transistor. A first reflective electrode for
The first contact is:
Electrically connecting the first pixel electrode and the first reflective electrode;
The second light emitting element is:
A light emitting functional layer provided between the common electrode, the second pixel electrode, and the common electrode and the second pixel electrode;
The second supply circuit includes:
A second transistor for supplying a current to the second light emitting element, and one of a source and a drain of the second transistor, electrically connected to the second light emitting element, and emitting light emitted from the second light emitting element A second reflective electrode for reflecting,
The second contact is:
Electrically connecting the second pixel electrode and the second reflective electrode;
The electro-optical device according to claim 1, wherein the electro-optical device is any one of the above. The electro-optical device according to claim 1 is provided.
An electronic device characterized by that.

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