JP2013058322A - Light-emitting panel, display device, and electronic apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light-emitting panel capable of suppressing increases in both the number of manufacturing processes and consumption power, and a display device and an electronic apparatus equipped with the same.SOLUTION: The light-emitting panel comprises: a first pixel; and a second pixel, a third pixel, and a fourth pixel disposed adjacent to the first pixel. The first pixel and the second pixel have a common first organic layer. Similarly, the first pixel and the third pixel have a common second organic layer, and the first pixel and the fourth pixel have a common third organic layer.

Description

  The present technology relates to a light-emitting panel including a self-luminous element such as an organic EL (electroluminescence) element, a display device including the same, and an electronic apparatus.

  In recent years, in the field of display devices that perform image display, display devices using current-driven optical elements, such as organic EL elements, whose light emission luminance changes according to the value of a flowing current have been developed as light-emitting elements of pixels. (See, for example, Patent Document 1). Unlike a liquid crystal element or the like, the organic EL element is a self-luminous element. Therefore, a display device (organic EL display device) using an organic EL element does not require a light source (backlight), and thus has higher image visibility and lower power consumption than a liquid crystal display device that requires a light source. And the response speed of the element is fast.

JP 2011-23240 A

  By the way, in order to realize a color display in an organic EL display device, it is generally performed to coat an organic layer for each kind of subpixel color. For example, a red organic layer is applied to a red sub-pixel, a green organic layer is applied to a green sub-pixel, and a blue organic layer is applied to a blue sub-pixel. However, when the sub-pixel has such a configuration, it is necessary to light all the sub-pixels during white light emission, resulting in high power consumption.

  Accordingly, it is conceivable to further provide a sub-pixel for displaying white. For example, as shown in FIG. 14, organic layers 34R, 34G, 34B, and 34W for red, green, blue, and white are stacked in each subpixel 13R, 13G, 13B, and 13W, and each subpixel is stacked. It is conceivable that color separation is performed by the color filter 37 with the same configuration of 13R, 13G, 13B, and 13W. In such a case, power consumption during white light emission can be reduced, but loss due to the color filter 37 occurs when light is emitted in other colors, so power consumption when light is emitted in other colors is high. turn into. Therefore, for example, as shown in FIG. 15, it is conceivable to stack all the organic layers applied to the other subpixels 13R, 13G, and 13B by the white subpixel 13W. However, in such a case, the number of manufacturing steps increases and the cost increases.

  The present technology has been made in view of such problems, and an object thereof is to provide a light-emitting panel capable of suppressing an increase in both the number of manufacturing steps and power consumption, and a display device and an electronic apparatus including the light-emitting panel. There is to do.

  The light emitting panel according to the present technology includes a first pixel, and a second pixel, a third pixel, and a fourth pixel that are disposed adjacent to the first pixel. The first pixel and the second pixel have a common first organic layer. Similarly, the first pixel and the third pixel have a common second organic layer, and the first pixel and the fourth pixel have a common third organic layer.

  A display device according to the present technology includes the light-emitting panel described above as a display panel, and further includes a drive circuit that drives the display panel. An electronic apparatus according to the present technology includes the display device described above.

  In the light emitting panel, the display device, and the electronic device according to the present technology, the second pixel, the third pixel, and the fourth pixel adjacent to the first pixel each have a common organic layer with the first pixel. As a result, for example, white light emission is possible by lighting only the first pixel. When the first organic layer, the second organic layer, and the third organic layer emit color light corresponding to the color of each pixel, the second pixel, the third pixel, or the fourth pixel is turned on. Thus, for example, red light emission, green light emission, or blue light emission is possible. In addition, when the first organic layer, the second organic layer, and the third organic layer emit yellow light, the second pixel, the third pixel, or the fourth pixel is turned on, and the light is filtered by the color filter. For example, red light emission, green light emission, or blue light emission is possible. As a result, a significant light emission loss due to the color filter can be eliminated. Further, in the present technology, since a common organic layer is provided for adjacent pixels, the first pixel, the second pixel can be processed in the same number of steps as the second pixel, the third pixel, and the fourth pixel. The pixel, the third pixel, and the fourth pixel can be separately painted.

  According to the light-emitting panel, the display device, and the electronic apparatus according to the present technology, the first pixel, which eliminates a significant light emission loss due to the color filter and has the same number of steps as the second pixel, the third pixel, and the fourth pixel are separately applied. Since the second pixel, the third pixel, and the fourth pixel can be separately applied, an increase in both the number of manufacturing steps and power consumption can be suppressed.

It is a figure showing an example of composition of a display concerning an embodiment by this art. It is a figure showing an example of the circuit structure of the sub pixel of FIG. It is a figure showing an example of the layout of the sub pixel of FIG. It is a figure showing an example of the layout of the organic layer shared between adjacent pixels. It is a figure showing an example of the cross-sectional structure of the AA arrow direction of FIG. It is a figure showing the other example of the layout of the organic layer shared between adjacent pixels. It is a figure showing an example of the cross-sectional structure of the AA arrow direction of FIG. It is a top view showing schematic structure of the module containing the display apparatus which concerns on the said embodiment and its modification. It is a perspective view showing the external appearance of the application example 1 of the display apparatus which concerns on the said embodiment and its modification. (A) is a perspective view showing the external appearance seen from the front side of the application example 2, (B) is a perspective view showing the external appearance seen from the back side. 12 is a perspective view illustrating an appearance of application example 3. FIG. 14 is a perspective view illustrating an appearance of application example 4. FIG. (A) is a front view of the application example 5 in an open state, (B) is a side view thereof, (C) is a front view in a closed state, (D) is a left side view, and (E) is a right side view, (F) is a top view and (G) is a bottom view. It is a figure showing an example of the section composition of the conventional subpixel. It is a figure showing the other example of the cross-sectional structure of the conventional subpixel.

DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments for carrying out the invention will be described in detail with reference to the drawings. The description will be given in the following order.

1. Embodiment 2. FIG. Modified example 2. Modules and application examples

<1. Embodiment>
[Constitution]
FIG. 1 illustrates an example of the overall configuration of a display device 1 according to an embodiment of the present technology. The display device 1 includes a display panel 10 and a drive circuit 20 that drives the display panel 10.

  The display panel 10 has a display area 10A in which a plurality of display pixels 14 are two-dimensionally arranged. The display panel 10 displays an image based on the video signal 20A input from the outside by driving each display pixel 14 in an active matrix. Each display pixel 14 includes a plurality of types of sub-pixels having different emission colors. Specifically, each display pixel 14 includes a red sub-pixel 13R, a green sub-pixel 13G, a blue sub-pixel 13B, and a white sub-pixel 13W. In the following description, the subpixel 13 is used as a general term for the subpixels 13R, 13G, 13B, and 13W.

  FIG. 2 illustrates an example of a circuit configuration of the subpixel 13. The subpixel 13 includes an organic EL element 11 and a pixel circuit 12 that drives the organic EL element 11. The subpixel 13R is provided with an organic EL element 11R that emits red EL light as the organic EL element 11. Similarly, the organic EL element 11G that emits green EL light is provided as the organic EL element 11 in the subpixel 13G. The subpixel 13B is provided with an organic EL element 11B that emits blue EL light as the organic EL element 11. The sub-pixel 13W is provided with an organic EL element 11W that emits white EL light as the organic EL element 11.

  The pixel circuit 12 includes, for example, a write transistor Tws, a drive transistor Tdr, and a storage capacitor Cs, and has a 2Tr1C circuit configuration. Note that the pixel circuit 12 is not limited to the 2Tr1C circuit configuration, and may include two write transistors Tws connected in series to each other, or may include transistors other than those described above or capacitors. Also good.

  The write transistor Tws is a transistor that writes a voltage corresponding to the video signal 20A to the storage capacitor Cs. The drive transistor Tdr is a transistor that drives the organic EL element 11 based on the voltage of the storage capacitor Cs written by the write transistor Tws. The write transistor Tws and the drive transistor Tdr are configured by, for example, an n-channel MOS thin film transistor (TFT (Thin Film Transistor)). Note that the write transistor Tws and the drive transistor Tdr may be formed of a p-channel MOS type TFT.

  The drive circuit 20 includes a timing generation circuit 21, a video signal processing circuit 22, a data line drive circuit 23, a gate line drive circuit 24 and a drain line drive circuit 25. The drive circuit 20 is also connected to the data line DTL connected to the output of the data line drive circuit 23, the gate line WSL connected to the output of the gate line drive circuit 24, and the output of the drain line drive circuit 25. And a drain line DSL. The drive circuit 20 further includes a ground line GND (see FIG. 2) connected to the cathode of the organic EL element 11. The ground line GND is connected to the ground, and becomes a ground voltage when connected to the ground.

  The timing generation circuit 21 controls, for example, the data line driving circuit 23, the gate line driving circuit 24, and the drain line driving circuit 25 to operate in conjunction with each other. For example, the timing generation circuit 21 outputs a control signal 21A to these circuits in response to (in synchronization with) a synchronization signal 20B input from the outside.

  For example, the video signal processing circuit 22 corrects a digital video signal 20A input from the outside, converts the corrected video signal into analog, and outputs a signal voltage 22B to the data line driving circuit 23. is there.

  In response to (in synchronization with) the input of the control signal 21A, the data line driving circuit 23 applies the analog signal voltage 22B input from the video signal processing circuit 22 via each data line DTL to the display pixel to be selected. 14 (or sub-pixel 13). For example, the data line driving circuit 23 can output a signal voltage 22B and a constant voltage unrelated to the video signal.

  In response to (in synchronization with) the input of the control signal 21A, the gate line driving circuit 24 sequentially applies a selection pulse to the plurality of gate lines WSL, thereby applying the plurality of display pixels 14 (or sub-pixels 13) to the gate line WSL. The unit is selected sequentially. The gate line driving circuit 24 can output, for example, a voltage applied when the write transistor Tws is turned on and a voltage applied when the write transistor Tws is turned off.

  The drain line driving circuit 25 outputs a predetermined voltage to the drain of the driving transistor Tdr of each pixel circuit 12 via each drain line DSL in response to (in synchronization with) the input of the control signal 21A. ing. The drain line drive circuit 25 can output, for example, a voltage applied when the organic EL element 11 emits light and a voltage applied when the organic EL element 11 is quenched.

  Next, the connection relationship and arrangement of each component will be described with reference to FIG. Gate line WSL extends in the row direction and is connected to the gate of write transistor Tws. The drain line DSL is also formed to extend in the row direction, and is connected to the drain of the drive transistor Tdr. The data line DTL extends in the column direction and is connected to the drain of the write transistor Tws.

  The source of the write transistor Tws is connected to the gate of the drive transistor Tdr and one end of the storage capacitor Cs. The source of the drive transistor Tdr and the other end of the storage capacitor Cs (terminal not connected to the write transistor Tws) are connected to the anode of the organic EL element 11. The cathode of the organic EL element 11 is connected to the ground line GND. The cathode is formed over the entire display area 10A, for example.

  Next, the layout of the sub-pixel 13 and the display pixel 14 will be described with reference to FIG. FIG. 3 shows an example of the layout of the sub-pixel 13 and the display pixel 14.

  For example, as shown in FIG. 3, the display pixels 14 are two-dimensionally arranged in the row direction and the column direction orthogonal to each other. Each display pixel 14 includes a plurality of types of subpixels 13 having different emission colors, and includes, for example, four types of subpixels 13R, 13G, 13B, and 13W. In FIG. 3, each of the subpixels 13 </ b> R, 13 </ b> G, 13 </ b> B, and 13 </ b> W is disposed at each of the four corners of the display pixel 14. Each subpixel 13R, 13G, 13B, 13W has, for example, a rectangular shape. The subpixels 13R, 13G, and 13B are disposed adjacent to the subpixel 13W, respectively.

  Next, a cross-sectional configuration in the display area 10A of the display panel 10 will be described with reference to FIG. FIG. 4 illustrates an example of a cross-sectional configuration in the direction of arrows AA in FIG.

  For example, as shown in FIG. 4, the display panel 10 includes the organic EL elements 11 (11R, 11G, 11B, and 11W) on the circuit substrate 31 on which the pixel circuits 12 are formed in the display region 10A. . The display panel 10 further includes a color filter 37 on the organic EL element 11 with an insulating layer 36 interposed therebetween, for example. The color filter 37 has a red light transmissive filter 37R in a region facing the organic EL element 11R, and a green light transmissive filter 37G in a region facing the organic EL element 11G. . The color filter 37 further includes a blue light transmissive filter 37B in a region facing the organic EL element 11B, and a white light transmissive filter 37W in a region facing the organic EL element 11W. ing.

  The organic EL element 11 has a structure in which an organic layer 34 is sandwiched between a reflective electrode 32 and a transparent electrode 35. Specifically, in the organic EL element 11R, the organic layer 34 has a structure in which an organic layer 34R that emits red light and an organic layer 34W that emits white light are stacked in this order from the circuit board 31 side. In the organic EL element 11G, the organic layer 34 has a structure in which an organic layer 34G that emits green light and an organic layer 34W are stacked in this order from the circuit board 31 side. In the organic EL element 11B, the organic layer 34 has a structure in which an organic layer 34B emitting blue light and an organic layer 34W are stacked in this order from the circuit board 31 side. Furthermore, in the organic EL element 11W, the organic layer 34 has a structure in which an organic layer 34R, an organic layer 34G, an organic layer 34B, and an organic layer 34W are stacked in this order from the circuit board 31 side. .

  The reflective electrode 32 is formed on the circuit board 31 side, and functions as an anode electrode of the organic EL element 11, for example. The reflective electrode 32 is provided independently for each subpixel 13. The reflective electrode 32 is made of a metal material and also functions as a reflective mirror. On the other hand, the transparent electrode 35 is formed on the side opposite to the circuit board 31 and functions as, for example, a cathode electrode of the organic EL element 11. The transparent electrode 35 is formed so as to cover each subpixel 13 and functions as a common electrode in each subpixel 13. The transparent electrode 35 is made of a conductive material that is transparent to visible light. The organic layers 34R, 34G, 4B, and 34W are, for example, sequentially from the reflective electrode 32 side, a hole injection layer that increases the hole injection efficiency, a hole transport layer that increases the hole transport efficiency to the light emitting layer, It has a light emitting layer that generates light emission due to recombination of electrons and holes, and an electron transport layer that increases the efficiency of electron transport to the light emitting layer. Thereby, after the light emitted from the organic layers 34R and 34W is output to the outside through the transparent electrode 35 or reflected by the reflective electrode 32, the subpixel 13R has the organic layers 34R, 34W and It is configured to output to the outside via the transparent electrode 35. The sub-pixel 13G is configured such that light emitted from the organic layers 34G and 34W is output to the outside via the transparent electrode 35 or reflected by the reflective electrode 32, and then the organic layers 34G and 34W and transparent It is configured to output to the outside via the electrode 35. The sub-pixel 13B is configured such that light emitted from the organic layers 34B and 34W is output to the outside via the transparent electrode 35 or reflected by the reflective electrode 32, and then the organic layers 34B and 34W and transparent It is configured to output to the outside via the electrode 35.

  Next, the layout of the organic layers 34R, 34G, and 34B will be described with reference to FIG. FIG. 5 shows an example of the layout of the organic layers 34R, 34G, and 34B. In addition, since the organic layer 34W is formed in the whole display area 10A, the description is omitted in FIG.

  Subpixels 13W and 13R adjacent to each other have an organic layer 34R as a common organic layer. The organic layer 34R has a strip shape extending from the subpixel 13R to the subpixel 13W, and is shared by the subpixels 13W and 13R adjacent to each other. Similarly, the subpixels 13W and 13G adjacent to each other have an organic layer 34G as a common organic layer. The organic layer 34G has a strip shape extending from the subpixel 13G to the subpixel 13W, and is shared by the subpixels 13W and 13G adjacent to each other. Further, the subpixels 13W and 13B adjacent to each other have an organic layer 34B as a common organic layer. The organic layer 34B has a strip shape extending from the subpixel 13B to the subpixel 13W, and is shared by the subpixels 13W and 13B adjacent to each other.

  Although not shown, the organic layer 34R is formed by vapor deposition through one opening Hr of a red mask having an opening Hr at a position where the adjacent subpixels 13W and 13R are formed, for example. Similarly, although not shown, the organic layer 34G is formed by vapor deposition through one opening Hg of a green mask having an opening Hg at a position where the adjacent subpixels 13W and 13G are formed, for example. . The organic layer 34B is formed, for example, by vapor deposition through one opening Hb of a blue mask having an opening Hb at a position where the adjacent subpixels 13W and 13B are formed, although not shown. As described above, the organic layers 34R, 34G, and 34B are collectively formed by one opening Hr, Hg, and Hb for each of the plurality of adjacent subpixels 13. Therefore, in the step of forming the organic layer 34R for the subpixel 13R, the organic layer 34R can be formed for the subpixel 13W. Further, in the step of forming the organic layer 34G for the subpixel 13G, the organic layer 34G can be formed for the subpixel 13W. Furthermore, in the step of forming the organic layer 34B for the subpixel 13B, the organic layer 34B can be formed for the subpixel 13W. Therefore, a new process for forming the plurality of organic layers 34R, 34G, 34B in the sub-pixel 13W is not necessary.

[Operation]
Next, an example of operation | movement of the display apparatus 1 of this Embodiment is demonstrated.

  In this display device 1, a signal voltage 22B corresponding to the video signal 20A is applied to each data line DTL by the data line driving circuit 23, and a selection pulse corresponding to the control signal 21A is driven to the gate line driving circuit 24 and the drain line driving. The circuit 25 sequentially applies to the plurality of gate lines WSL and drain lines DSL. Thereby, the pixel circuit 12 is controlled to be turned on / off in each subpixel 13, and a driving current is injected into the organic EL element 11 of each subpixel 13, whereby holes and electrons are recombined to emit light, Light is extracted outside. As a result, an image is displayed in the display area 10 </ b> A of the display panel 10.

[effect]
Next, effects of the display device 1 according to the present embodiment will be described.

  In order to realize color display in an organic EL display device, it is generally performed that an organic layer is separately applied for each kind of subpixel color. For example, a red organic layer is applied to a red sub-pixel, a green organic layer is applied to a green sub-pixel, and a blue organic layer is applied to a blue sub-pixel. However, when the sub-pixel has such a configuration, it is necessary to light all the sub-pixels during white light emission, resulting in high power consumption.

  Accordingly, it is conceivable to further provide a sub-pixel for displaying white. For example, as shown in FIG. 14, organic layers 34R, 34G, 34B, and 34W for red, green, blue, and white are stacked in each subpixel 13R, 13G, 13B, and 13W, and each subpixel is stacked. It is conceivable that color separation is performed by the color filter 37 with the same configuration of 13R, 13G, 13B, and 13W. In such a case, the power consumption during white light emission can be surely reduced, but the loss due to the color filter 37 occurs when emitting other colors, so the power consumption when emitting other colors. Becomes higher. Therefore, for example, as shown in FIG. 15, it is conceivable to stack all the organic layers applied to the other subpixels 13R, 13G, and 13B by the white subpixel 13W. However, in such a case, the number of manufacturing steps increases and the cost increases.

  On the other hand, in the present embodiment, each of the subpixels 13R, 13G, and 13B adjacent to the subpixel 13W has a separate organic layer in common with the subpixel 13W. Specifically, the subpixels 13W and 13R adjacent to each other have an organic layer 34R as a common organic layer. Similarly, the subpixels 13W and 13G adjacent to each other have an organic layer 34G as a common organic layer. Further, the subpixels 13W and 13B adjacent to each other have an organic layer 34B as a common organic layer. Accordingly, white light can be emitted by turning on only the sub-pixel 13W, and red light, green light, or blue light can be emitted by turning on the sub-pixel 13R, 13G, or 13B. As a result, a significant light emission loss due to the color filter 37 can be eliminated. In the present technology, since a common organic layer is provided for subpixels adjacent to each other, the subpixels 13R, 13G, 13B, and 13W are processed in the same number of steps as the subpixels 13R, 13G, and 13B. It is possible to paint differently. Therefore, increase in both the number of manufacturing processes and power consumption can be suppressed.

<2. Modification>
[Modification 1]
In the above embodiment, an organic layer 34Y that emits yellow light may be provided instead of the organic layers 34R and 34G. FIG. 6 shows an example of the layout of the organic layer 34Y. FIG. 7 illustrates an example of a cross-sectional configuration in the direction of arrows AA in FIG. The organic layer 34Y is a common organic layer for the subpixels 13R, 13G, and 13W. For example, as illustrated in FIGS. 6 and 7, the organic layer 34 </ b> Y has an opening Hy at a position corresponding to the subpixel 13 </ b> B, and an area excluding a position corresponding to the subpixel 13 </ b> B in the display area 10 </ b> A. Covers the whole.

  In this modification, each of the subpixels 13R, 13G, and 13B adjacent to the subpixel 13W has a common organic layer with the subpixel 13W. Specifically, the subpixels 13R, 13G, and 13W have an organic layer 34Y as a common organic layer. Further, the subpixels 13W and 13B adjacent to each other have an organic layer 34B as a common organic layer. As a result, only the sub-pixel 13W is lit to emit white light, and the sub-pixel 13R, 13G, or 13B is lit, and the light is transmitted through the color filter 37, thereby emitting red light, green light, or blue light. It becomes possible. As a result, a significant light emission loss due to the color filter 37 can be eliminated. Further, in this modification, the subpixels 13R, 13G, 13B, and 13W can be separately painted with a smaller number of processes than the subpixels 13R, 13G, and 13B. Therefore, in this modification, it is possible to suppress an increase in both the number of manufacturing steps and power consumption.

<3. Modules and application examples>
Hereinafter, application examples of the display device 1 described in the above embodiment and the modifications thereof will be described. The display device 1 displays an externally input video signal or an internally generated video signal as an image or video, such as a television device, a digital camera, a notebook personal computer, a mobile terminal device such as a mobile phone, or a video camera. The present invention can be applied to display devices for electronic devices in all fields.

[module]
The display device 1 is incorporated into various electronic devices such as application examples 1 to 5 described later, for example, as a module shown in FIG. In this module, for example, an area 210 exposed from a member (not shown) that seals the display panel 10 is provided on one side of the substrate 3, and the timing generation circuit 21 and the video signal processing circuit 22 are provided in the exposed area 210. The data line driving circuit 23, the gate line driving circuit 24, and the drain line driving circuit 25 are extended to form external connection terminals (not shown). The external connection terminal may be provided with a flexible printed circuit (FPC) 220 for signal input / output.

[Application Example 1]
FIG. 9 illustrates an appearance of a television device to which the display device 1 is applied. The television apparatus has a video display screen unit 300 including, for example, a front panel 310 and a filter glass 320, and the video display screen unit 300 is configured by the display device 1.

[Application Example 2]
FIG. 10 shows the appearance of a digital camera to which the display device 1 is applied. The digital camera includes, for example, a flash light emitting unit 410, a display unit 420, a menu switch 430, and a shutter button 440, and the display unit 420 includes the display device 1.

[Application Example 3]
FIG. 11 shows the appearance of a notebook personal computer to which the display device 1 is applied. The notebook personal computer has, for example, a main body 510, a keyboard 520 for inputting characters and the like, and a display unit 530 for displaying an image. The display unit 530 is configured by the display device 1. .

[Application Example 4]
FIG. 12 shows the appearance of a video camera to which the display device 1 is applied. This video camera has, for example, a main body 610, a subject photographing lens 620 provided on the front side surface of the main body 610, a start / stop switch 630 at the time of photographing, and a display 640. Reference numeral 640 denotes the display device 1.

[Application Example 5]
FIG. 13 shows the appearance of a mobile phone to which the display device 1 is applied. For example, the mobile phone is obtained by connecting an upper housing 710 and a lower housing 720 with a connecting portion (hinge portion) 730, and includes a display 740, a sub-display 750, a picture light 760, and a camera 770. Yes. The display 740 or the sub display 750 is configured by the display device 1.

  Although the present technology has been described with reference to the above embodiments and application examples, the present technology is not limited to these, and various modifications can be made.

  For example, in the above-described embodiments and the like, the case where the present technology is applied to a display device has been described. However, the present technology can also be applied to other devices such as a lighting device. In the case of a lighting device, the display panel is a light emitting panel.

  In the above embodiments and the like, the case where the display device is an active matrix type has been described. However, the configuration of the pixel circuit 12 for driving the active matrix is not limited to that described in the above embodiments and the like. Therefore, a capacitor and a transistor can be added to the pixel circuit 12 as necessary. In that case, in addition to the timing generation circuit 21, the video signal processing circuit 22, the data line driving circuit 23, the gate line driving circuit 24, and the drain line driving circuit 25 described above, a necessary driving circuit according to the change of the pixel circuit 12. May be added.

  In the above embodiment and the like, the timing generation circuit 21 and the video signal processing circuit 22 control the driving of the data line driving circuit 23, the gate line driving circuit 24, and the drain line driving circuit 25. You may make it control these drives. Control of the data line driving circuit 23, the gate line driving circuit 24, and the drain line driving circuit 25 may be performed by hardware (circuit) or software (program).

  In the above-described embodiments and the like, it has been described that the source and drain of the write transistor Tws and the source and drain of the drive transistor Tdr are fixed. Needless to say, depending on the direction in which the current flows, The opposing relationship between the source and the drain may be opposite to the above description.

  In the above embodiments and the like, it has been described that the write transistor Tws and the drive transistor Tdr are formed of n-channel MOS type TFTs. However, at least one of the write transistor Tws and the drive transistor Tdr is p It may be formed by a channel MOS type TFT. When the drive transistor Tdr is formed of a p-channel MOS type TFT, the anode 35A of the organic EL element 11 is a cathode and the cathode 35B of the organic EL element 11 is an anode in the above-described embodiment and the like. . In the above-described embodiment and the like, the write transistor Tws and the drive transistor Tdr do not always need to be amorphous silicon type TFTs or micro silicon type TFTs. For example, even a low temperature polysilicon type TFT may be used. Good.

For example, this technique can take the following composition.
(1)
A first pixel, and a second pixel, a third pixel, and a fourth pixel disposed adjacent to the first pixel,
The first pixel and the second pixel have a common first organic layer,
The first pixel and the third pixel have a common second organic layer,
The first pixel and the fourth pixel have a common third organic layer.
(2)
The first organic layer is a red organic layer extending from the second pixel to the first pixel;
The second organic layer is a green organic layer extending from the third pixel to the first pixel;
The light emitting panel according to (1), wherein the third organic layer is a blue organic layer extending from the fourth pixel to the first pixel.
(3)
The first organic layer and the second organic layer are organic layers common to the second pixel, the third pixel, and the first pixel, and are organic layers that emit yellow light.
The light emitting panel according to (1), wherein the third organic layer is a blue organic layer extending from the fourth pixel to the first pixel.
(4)
The light emitting panel according to any one of (1) to (3), wherein each of the first pixel, the second pixel, the third pixel, and the fourth pixel has an anode electrode provided independently for each pixel. .
(5)
A display panel and a drive circuit for driving the display panel;
The display panel includes a first pixel, a second pixel, a third pixel, and a fourth pixel disposed adjacent to the first pixel,
The first pixel and the second pixel have a common first organic layer,
The first pixel and the third pixel have a common second organic layer,
The first pixel and the fourth pixel have a common third organic layer.
(6)
A display device,
The display device includes a display panel and a drive circuit that drives the display panel,
The display panel includes a first pixel, a second pixel, a third pixel, and a fourth pixel disposed adjacent to the first pixel,
The first pixel and the second pixel have a common first organic layer,
The first pixel and the third pixel have a common second organic layer,
The electronic device in which the first pixel and the fourth pixel have a common third organic layer.

  DESCRIPTION OF SYMBOLS 1 ... Display apparatus, 10 ... Display panel, 10A ... Display area, 11, 11R, 11G, 11B ... Organic EL element, 12 ... Pixel circuit, 13, 13R, 13G, 13B ... Sub pixel, 14 ... Display pixel, 20 ... Drive circuit, 21... Timing generation circuit, 21A ... control signal, 22 ... video signal processing circuit, 23 ... data line drive circuit, 24 ... gate line drive circuit, 25 ... drain line drive circuit, 31 ... circuit board, 32 ... reflection Electrode 33 ... resin layer 33A ... opening 34 ... organic layer 35 ... transparent electrode 36 ... insulating layer 37 ... color filter 37R, 37G, 37B, 37W ... light transmissive filter 300 ... video display screen , 310 ... Front panel, 320 ... Filter glass, 410 ... Light emitting part, 420, 530, 640 ... Display part, 430 ... Menu switch, 440 ... Shut -Button, 510 ... main body, 520 ... keyboard, 610 ... main body, 620 ... lens, 630 ... start / stop switch, 710 ... upper housing, 720 ... lower housing, 730 ... connecting portion, 740 ... display, 750 ... Sub-display, 760 ... Picture light, 770 ... Camera, Cs ... Retention capacitor, DSL ... Drain line, DTL ... Data line, Hy ... Opening, Tdr ... Drive transistor, Tws ... Write transistor, WSL ... Gate line.

Claims (6)

A first pixel, and a second pixel, a third pixel, and a fourth pixel disposed adjacent to the first pixel,
The first pixel and the second pixel have a common first organic layer,
The first pixel and the third pixel have a common second organic layer,
The first pixel and the fourth pixel have a common third organic layer. The first organic layer is a red organic layer extending from the second pixel to the first pixel;
The second organic layer is a green organic layer extending from the third pixel to the first pixel;
The light emitting panel according to claim 1, wherein the third organic layer is a blue organic layer extending from the fourth pixel to the first pixel. The first organic layer and the second organic layer are organic layers common to the second pixel, the third pixel, and the first pixel, and are organic layers that emit yellow light.
The light emitting panel according to claim 1, wherein the third organic layer is a blue organic layer extending from the fourth pixel to the first pixel. The light emitting panel according to claim 1, wherein the first pixel, the second pixel, the third pixel, and the fourth pixel each have an anode electrode provided independently for each pixel. A display panel and a drive circuit for driving the display panel;
The display panel includes a first pixel, a second pixel, a third pixel, and a fourth pixel disposed adjacent to the first pixel,
The first pixel and the second pixel have a common first organic layer,
The first pixel and the third pixel have a common second organic layer,
The first pixel and the fourth pixel have a common third organic layer. A display device,
The display device includes a display panel and a drive circuit that drives the display panel,
The display panel includes a first pixel, a second pixel, a third pixel, and a fourth pixel disposed adjacent to the first pixel,
The first pixel and the second pixel have a common first organic layer,
The first pixel and the third pixel have a common second organic layer,
The electronic device in which the first pixel and the fourth pixel have a common third organic layer.

Images