JP2016131071A - Display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a display device which enables the suppression of the increase in thickness.SOLUTION: The display device comprises: a first organic layer 40a provided for each of a plurality of pixels and including a first light-emitting layer operable to emit light of a first color; a second organic layer 40b provided for each of the plurality of pixels, adjoining the first organic layer in a direction orthogonal to the thickness of the first organic layer, and including a second light-emitting layer operable to emit light of a second color which makes white when mixed with the first color; lower electrodes 26 provided under the first organic layer 40a and the second organic layer 40b respectively; upper electrodes 41 provided over the first organic layer 40a and the second organic layer 40b respectively; and color filters 44 provided over the first organic layer 40a and the second organic layer 40b for each of the plurality of pixels, and arranged to allow light in a particular wavelength range to pass therethrough. The first light-emitting layer 40a and the second light-emitting layer 40b are each caused to emit light by an electric current flowing from one of the lower electrode 26 and the upper electrode 41 to the other.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a display device.

  In a display device such as an organic EL (Electro Luminescence) display device, a self-light emitting element such as an organic light emitting diode (OLED) may be controlled using a switching element such as a transistor to display an image. Here, as a self-luminous element, a so-called tundam organic light emitting diode may be employed to obtain white light. In that case, full color display can be performed by using a color filter.

  Patent Document 1 below describes a tandem white OLED device that includes an intermediate connection layer that includes at least two different layers and is not directly connected to an external power source.

Special table 2008-511100 gazette

  When white light emission is realized by a tandem organic light emitting diode, for example, a light emitting layer that emits yellow light and a light emitting layer that emits blue light may be stacked. When two or more light emitting layers are stacked, the thickness of the organic layer increases, and the thickness of the display device also increases.

  Therefore, an object of the present invention is to provide a display device in which an increase in thickness is suppressed.

  The display device of the present invention is provided in each of the plurality of pixels and includes a first organic layer including a first light emitting layer that emits light of a first color, and the thickness of the first organic layer provided in each of the plurality of pixels. A second organic layer adjacent to the first organic layer in a direction orthogonal to the first organic layer and including a second light emitting layer that emits white light when mixed with the first color, and the first organic layer A lower electrode provided below the first organic layer and the second organic layer, an upper electrode provided on the first organic layer and the second organic layer, and the first organic layer for each of the plurality of pixels. And a color filter that is provided on each of the second organic layers and transmits light in a specific wavelength range, and the first light-emitting layer and the second light-emitting layer include the lower electrode and the second light-emitting layer, respectively. Light is emitted by the current flowing from one side of the upper electrode to the other. The features.

1 is a perspective view of a display device according to a first embodiment of the present invention. 1 is a wiring diagram of a display panel according to a first embodiment of the present invention. 1 is an equivalent circuit diagram of a pixel of a display device according to a first embodiment of the present invention. It is sectional drawing of the pixel of the display apparatus which concerns on the 1st Embodiment of this invention. It is the equivalent circuit schematic of the pixel of the display apparatus which concerns on the 2nd Embodiment of this invention. It is sectional drawing of the pixel of the display apparatus which concerns on the 2nd Embodiment of this invention. It is the equivalent circuit schematic of the pixel of the display apparatus which concerns on the 3rd Embodiment of this invention. It is sectional drawing of the pixel of the display apparatus which concerns on the 3rd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that the disclosure is merely an example, and those skilled in the art can easily conceive of appropriate modifications while maintaining the gist of the invention are naturally included in the scope of the present invention. In addition, the drawings may be schematically represented with respect to the width, thickness, shape, and the like of each part in comparison with actual aspects for the sake of clarity of explanation, but are merely examples, and the interpretation of the present invention is not limited. It is not limited. In addition, in the present specification and each drawing, elements similar to those described above with reference to the previous drawings are denoted by the same reference numerals, and detailed description may be omitted as appropriate.

[First Embodiment]
FIG. 1 is a perspective view showing a display device 1 according to the first embodiment of the present invention. The display device 1 includes a display panel 10 fixed so as to be sandwiched between an upper frame 2 and a lower frame 3.

  FIG. 2 is a wiring diagram of the display panel 10 according to the first embodiment of the present invention. The display panel 10 controls each pixel provided in the display area 11 in a matrix by the video signal driving circuit 12 and the scanning signal driving circuit 13 to display an image. Here, the video signal driving circuit 12 is a circuit that generates and transmits a video signal to be sent to each pixel. The video signal driving circuit 12 includes a control circuit 12a that adjusts the luminance of the organic light emitting diode. The scanning signal driving circuit 13 is a circuit that generates and transmits a scanning signal to a TFT (Thin Film Transistor) provided in the pixel. In the drawing, the video signal driving circuit 12 and the scanning signal driving circuit 13 are illustrated as being formed at two locations, but may be incorporated into one IC (Integrated Circuit) or at three locations. It may be formed separately as described above.

  FIG. 3 is an equivalent circuit diagram of a pixel of the display device 1 according to the first embodiment of the present invention. The scanning line 14 that transmits a signal from the scanning signal driving circuit 13 is electrically connected to the gates of the two pixel transistors SST formed in the pixel PX. The scanning line 14 is common to the pixel transistors arranged in one row. The video signal line 15 for transmitting a signal from the video signal driving circuit 12 is electrically connected to either the source or the drain of the pixel transistor SST. The video signal line 15 is common to the pixel transistors arranged in one column. The source or drain of the pixel transistor SST is electrically connected to the gate of the driving transistor DRT and the storage capacitor Cs. The other end of the storage capacitor Cs is electrically connected to the power line 16. Further, the drains of the first driving transistor DRT1 and the second driving transistor DRT2 are electrically connected to the power supply line 16, the source of the first driving transistor DRT1 is electrically connected to the first organic light emitting diode OLED1, The source of the two drive transistor DRT2 is electrically connected to the second organic light emitting diode OLED1. The other ends of the first organic light emitting diode OLED1 and the second organic light emitting diode OLED2 are electrically connected to a ground electrode (common electrode), respectively. The pixel PX of the display device 1 according to the present embodiment includes two organic light emitting diodes, a first organic light emitting diode OLED1 and a second organic light emitting diode OLED2.

  When a voltage corresponding to the scanning signal is applied to the scanning line 14, the pixel transistor SST is turned on. In this state, when a voltage (video signal voltage) corresponding to the video signal is applied to the video signal line 15 on the left side of FIG. 3, the video signal voltage is written to the storage capacitor Cs, and the video signal is applied to the gate of the first drive transistor DRT1. The voltage is applied and the first drive transistor DRT1 is turned on. A power supply voltage for causing the first organic light emitting diode OLED1 to emit light is applied to the power supply line 16 electrically connected to the drain of the first drive transistor DRT1. When the first drive transistor DRT1 is turned on, a current corresponding to the magnitude of the video signal voltage flows through the channel of the first drive transistor DRT1. When a current flows through the channel of the first driving transistor DRT1, a current flows through the first organic light emitting diode OLED1, and the material forming the light emitting layer is excited and emits light. On the other hand, when the pixel transistor SST is turned on and a video signal voltage is applied to the right video signal line 15 in FIG. 3, the second drive transistor DRT2 is turned on, and the second organic light emitting diode OLED2 is turned on. Emits light. The display device 1 according to the present embodiment displays an image by controlling on / off of the pixel transistor SST and the driving transistor DRT provided in each pixel according to signal voltages generated by the video signal driving circuit 12 and the scanning signal driving circuit 13. .

  FIG. 4 is a cross-sectional view of a pixel of the display device 1 according to the first embodiment of the present invention. A substrate 20 is disposed in the lowermost layer of the display panel 10. The substrate 20 is made of glass or artificial resin.

  A base film 21 is formed on the substrate 20 by SiNx, SiOy, or the like. A channel layer 32 that electrically connects the drain electrode 30 and the source electrode 33 of the driving transistor is formed on the base film 21. The channel layer 32 is made of polycrystalline silicon. Note that the channel layer 32 may be formed of amorphous silicon or the like. A first insulating film 22 is formed on the base film 21 and the channel layer 32 by using SiNx, SiOy, or the like. On the first insulating film 22, the gate electrode 31 of the driving transistor is formed of a metal material. A second insulating film 23 is formed on the first insulating film 22 and the gate electrode 31 with SiNx, SiOy, or the like. Through holes reaching the channel layer 32 are provided in the second insulating film 23 and the first insulating film 22, and the drain electrode 30 and the source electrode 33 of the driving transistor are formed of a metal material. On the drain electrode 30, the source electrode 33, and the second insulating film 23, an interlayer insulating film 24 is formed of SiNx, SiOy, or the like. A planarizing film 25 is formed on the interlayer insulating film 24 by SiNx, SiOy, or the like. In the example shown in FIG. 4, the channel layer 32 is an n-channel type, and a current flows from the drain electrode 30 side to the source electrode 33 side.

  A first lower electrode 26a and a second lower electrode 26b are formed of a metal material on the planarizing film 25 that is an insulating surface. The first lower electrode 26a becomes the anode of the first organic light emitting diode OLED1, and the second lower electrode 26b becomes the anode of the second organic light emitting diode OLED2. The first lower electrode 26a and the second lower electrode 26b are provided separately. The first lower electrode 26a and the second lower electrode 26b are electrically connected to the source electrode 33 of the driving transistor through through holes provided in the planarizing film 25 and the interlayer insulating film 24, respectively.

  A pixel isolation film 27 is formed on the planarizing film 25, the first lower electrode 26a, and the second lower electrode 26b by a photosensitive resin such as acrylic or polyimide, or an inorganic material such as SiNx or SiOy. The pixel separation film 27 covers the ends of the first lower electrode 26a and the second lower electrode 26b, respectively, and prevents a short circuit between the electrodes. The pixel separation film 27 defines a light emitting region as described below.

  Each of the plurality of pixels PX is provided with a first organic layer 40a including a first light emitting layer that emits light of a first color. Each of the plurality of pixels PX is adjacent to the first organic layer 40a in a direction orthogonal to the thickness of the first organic layer 40a (a direction along the substrate 20), and becomes white when mixed with the first color. A second organic layer 40b including a second light emitting layer that emits light of the second color is provided. The first organic layer 40a is formed on the pixel isolation film 27 and the first lower electrode 26a. The first organic layer 40a is formed by laminating a hole transport layer, a first light emitting layer, and an electron transport layer in order from the first lower electrode 26a side. Here, an electron injection layer may be formed on the first light emitting layer, or an electron transport layer and an electron injection layer may be sequentially formed. In addition, a hole injection layer may be formed under the first light emitting layer, or a hole injection layer and a hole transport layer may be formed in order. Similarly, the second organic film 40b is formed on the pixel isolation film 27 and the second lower electrode 26b. The first organic layer 40 a and the second organic layer 40 b are adjacent on the pixel separation film 27. The second organic layer 40b is formed by laminating a hole transport layer, a second light emitting layer, and an electron transport layer in this order from the second lower electrode 26b side. Here, an electron injection layer may be formed on the second light emitting layer, or an electron transport layer and an electron injection layer may be sequentially formed. In addition, a hole injection layer may be formed under the second light emitting layer, or a hole injection layer and a hole transport layer may be formed in order. In adjacent pixels, the first organic layer 40a and the second organic layer 40b are provided separately from each other.

  In the display device 1 according to the present embodiment, the first light-emitting layer included in the first organic layer 40a is a layer that emits blue light as the first color, and the second light-emitting layer included in the second organic layer 40b. Is a layer that emits yellow light as the second color. The second color, yellow, is a color that turns white when mixed with the first color, blue. In the display device 1 according to the present embodiment, one pixel includes a first light emitting layer that emits blue light and a second light emitting layer that emits yellow light, and emits white light as a whole.

  The first lower electrode 26a is provided under the first organic layer 40a, and the second lower electrode 26b is provided under the second organic layer 40b. The light emitting region of the first light emitting layer is a region of the first light emitting layer that is formed immediately above the first lower electrode 26a (a portion of the first light emitting layer that does not run on the pixel isolation film 27). The light emitting region of the second light emitting layer is a region formed in the second light emitting layer immediately above the second lower electrode 26b (a portion of the second light emitting layer that does not run on the pixel isolation film 27). Holes flow from the hole transport layer and electrons flow from the electron transport layer into the light emitting regions of the first light emitting layer and the second light emitting layer. Then, recombination of electrons and holes occurs in the first light-emitting layer and the second light-emitting layer, and the organic material forming the first light-emitting layer and the second light-emitting layer is excited and transitions from the high energy level to the low energy level. Emit blue and yellow light respectively.

  On the first organic layer 40a and the second organic layer 40b, an upper electrode 41 is provided by a transparent conductive material such as ITO (Indium Tin Oxide) or IZO (Indium Zinc Oxide). In the display device 1 according to the present embodiment, the upper electrode 41 provided on the first organic layer 40a and the upper electrode 41 provided on the second organic layer 40b are continuously integrated in each of the plurality of pixels. Provided. In addition, the upper electrode 41 is continuously and integrally provided in adjacent pixels among the plurality of pixels. The upper electrode 41 may be provided continuously and integrally on the entire surface of the display region 11.

  The upper electrode 41 is a common electrode of the first organic light emitting diode OLED1 and the second organic light emitting diode OLED2, and serves as a cathode. In the display device 1 according to the present embodiment, the first light emitting layer and the second light emitting layer emit light by current flowing from one of the lower electrode 26 and the upper electrode 41 to the other, respectively. In addition, current flows in the same direction through the first organic layer 40a and the second organic layer 40b. Specifically, a current flows through the first organic layer 40a from the first lower electrode 26a serving as an anode toward the upper electrode 41 serving as a cathode. In the second organic layer 40b, an electrode flows from the second lower electrode 26b serving as the anode toward the upper electrode 41 serving as the cathode.

  A sealing film 42 is formed on the upper electrode 41 in order to prevent deterioration of the organic layer. Furthermore, the filler 43 is filled, and a first colored layer 44a, a second colored layer 44b, and a third colored layer 44c are provided. The first colored layer 44a, the second colored layer 44b, and the third colored layer 44c are layers that constitute a color filter. The color filter is provided on each of the plurality of pixels on the first organic layer 40a and the second organic layer 40b, and transmits light in a specific wavelength range. In the example of FIG. 4, a second colored layer 44b that transmits green light is provided on the first organic layer 40a and the second organic layer 40b. The first colored layer 44a transmits red light, and the third colored layer 44c transmits blue light. In addition to these colored layers, by providing a colored layer that transmits white light, a pixel having red, green, blue, and white emission colors can be formed. In the display device 1 according to the present embodiment, four pixels having emission colors of red, green, blue, and white are set as one unit, and the one unit of pixels is arranged in a matrix to perform full color display. Further, in the display device 1 according to the present embodiment, eight organic light emitting diodes are included in one pixel. In addition, the color which a colored layer permeate | transmits may be other than the color mentioned above, and a full color display can be performed even if it does not provide a white pixel.

  On the first colored layer 44a, the second colored layer 44b, and the third colored layer 44c, the counter substrate 45 is bonded and sealed. A black matrix may be formed on the front surface or the back surface of the counter substrate 45. In addition, a touch panel may be provided on the surface of the counter substrate 45.

  The video signal drive circuit 12 of the display device 1 according to the present embodiment includes a first voltage applied to the first lower electrode 26a (a lower electrode provided below the first organic layer 40a) and a second lower electrode 26b ( And a control circuit 12a that changes a second voltage applied to a lower electrode provided under the second organic layer 40b. In general, the organic layer emitting blue light and the organic layer emitting yellow light have different degrees of change in characteristics over time. For this reason, when the display device is used for many years, there is a difference in luminance between blue and yellow, the light emission color of the pixel changes, and the color of the image displayed by the display device may change. . According to the display device 1 according to the present embodiment, even when the characteristics of the first organic layer 40a and the second organic layer 40b change, the first voltage applied to the first lower electrode 26a and the second voltage By having a control circuit that changes the second voltage applied to the lower electrode 26b, the luminance of the first organic light emitting diode OLED1 and the second organic light emitting diode OLED2 can be independently adjusted, and the display device 1 The color of the displayed image can be adjusted.

  In the display device 1 according to the present embodiment, the first organic layer 40 a that emits blue light and the second organic layer 40 b that emits yellow light are provided adjacent to each other in the direction along the substrate 20. Therefore, a display device in which an increase in thickness is suppressed as compared with the case where a plurality of organic layers is stacked is provided.

[Second Embodiment]
FIG. 5 is an equivalent circuit diagram of a pixel of the display device 1a according to the second embodiment of the present invention. FIG. 6 is a cross-sectional view of a pixel of the display device 1a according to the second embodiment of the present invention. The display device 1a according to the present embodiment is a display according to the first embodiment in that the first organic light emitting diode OLED1 and the second organic light emitting diode OLED2 are connected in series and controlled by one drive transistor DRT. Different from device 1. In the present embodiment, one pixel PX is provided with one drive transistor DRT and two organic light emitting diodes. Further, the configuration of the second organic layer 40c and the upper electrode 42a is different between the display device 1a according to the present embodiment and the display device 1 according to the first embodiment. Regarding other configurations, the display device 1 according to the present embodiment and the display device 1 according to the first embodiment have corresponding configurations.

  In the display device 1a according to the present embodiment, the upper electrode 41a is provided separately in adjacent pixels among the plurality of pixels. The upper electrode 41a is provided separately on the pixel separation film 27 that separates the pixels, and is provided independently for each of the plurality of pixels. The upper electrode 41a is formed so as to surround the end portions of the first organic layer 40a and the second organic layer 40c.

  In each of the plurality of pixels PX, a first organic layer 40a including a first light emitting layer that emits blue light, and a first organic layer in a direction orthogonal to the thickness of the first organic layer 40a (a direction along the substrate 20). Adjacent to 40a, a second organic layer 40b including a second light emitting layer that emits yellow light is provided. The first organic layer 40a is formed by laminating a hole transport layer, a first light emitting layer, and an electron transport layer in order from the first lower electrode 26a side. Here, an electron injection layer may be formed on the first light emitting layer, or an electron transport layer and an electron injection layer may be sequentially formed. In addition, a hole injection layer may be formed under the first light emitting layer, or a hole injection layer and a hole transport layer may be formed in order.

  In the display device 1a according to this embodiment, the second organic layer 40c includes a hole transport layer and an electron transport layer in addition to the second light emitting layer, and the stacking order is reverse to that of the first organic layer 40a. That is, the second organic layer 40c is formed by stacking an electron transport layer, a second light emitting layer, and a hole transport layer in order from the second lower electrode 26b side. Here, a hole injection layer may be formed on the second light emitting layer, or a hole transport layer and a hole injection layer may be sequentially formed. Further, an electron injection layer may be formed under the second light emitting layer, or an electron injection layer and an electron transport layer may be formed in this order.

  The upper electrode 41a is formed of a charge generation layer that generates electrons and holes, supplies electrons to the first organic layer 40a, and supplies holes to the second organic layer 40c. In the display device 1 according to the present embodiment, the first light emitting layer and the second light emitting layer emit light by current flowing from one of the lower electrode 26 and the upper electrode 41a to the other, respectively. In addition, current flows through the first organic layer 40a and the second organic layer 40c in opposite directions. Specifically, a current flows through the first organic layer 40a from the first lower electrode 26a serving as an anode toward the upper electrode 41a serving as a cathode. In the second organic layer 40c, an electrode flows from the upper electrode 41a serving as the anode toward the second lower electrode 26b serving as the cathode. Here, the second lower electrode 26 b is electrically connected to the ground electrode 34. The upper electrode 41a may be formed of ITO, IZO or the like.

  In the display device 1a according to the present embodiment, light emission of the first organic layer 40a and the second organic layer 40c is controlled by one drive transistor DRT, and the first organic layer 40a and the second organic layer 40c are along the substrate 20. Adjacent to the direction. Therefore, a display device in which an increase in thickness is suppressed and an increase in the number of transistors is suppressed as compared with the case where a plurality of organic layers is stacked is provided.

[Third Embodiment]
FIG. 7 is an equivalent circuit diagram of a pixel of the display device 1b according to the third embodiment of the present invention. FIG. 8 is a cross-sectional view of a pixel of the display device 1b according to the third embodiment of the present invention. The display device 1b according to the present embodiment is a display device according to the first embodiment in that the first organic light emitting diode OLED1 and the second organic light emitting diode OLED2 are connected in parallel and controlled by one drive transistor DRT. Different from 1. In the present embodiment, one pixel PX is provided with one drive transistor DRT and two organic light emitting diodes. Further, the configuration of the common lower electrode 26c is different between the display device 1b according to the present embodiment and the display device 1 according to the first embodiment. Regarding other configurations, the display device 1b according to the present embodiment and the display device 1 according to the first embodiment have corresponding configurations.

  In the display device 1 according to this embodiment, in each of the plurality of pixels PX, the common lower electrode 26c provided below the first organic layer 40a and the common lower electrode 26c provided below the second organic layer 40b are It is provided continuously and integrally. That is, the common lower electrode 26c is provided in common for the first organic light emitting diode OLED1 and the second organic light emitting diode OLED2 for each pixel. Further, the common lower electrode 26c is provided separately in the adjacent pixels PX among the plurality of pixels PX. In the display device 1 according to the present embodiment, the upper electrode 41 provided on the first organic layer 40a and the upper electrode 41 provided on the second organic layer 40b are continuously integrated in each of the plurality of pixels PX. Is provided. The upper electrode 41 is continuously and integrally provided in adjacent pixels PX among the plurality of pixels PX. The upper electrode 41 may be provided continuously and integrally on the entire surface of the display region 11.

  In each of the plurality of pixels PX, a first organic layer 40a including a first light emitting layer that emits blue light, and a first organic layer in a direction orthogonal to the thickness of the first organic layer 40a (a direction along the substrate 20). Adjacent to 40a, a second organic layer 40b including a second light emitting layer that emits yellow light is provided. The first organic layer 40a is formed by laminating a hole transport layer, a first light emitting layer, and an electron transport layer in order from the common lower electrode 26c side. Here, an electron injection layer may be formed on the first light emitting layer, or an electron transport layer and an electron injection layer may be sequentially formed. In addition, a hole injection layer may be formed under the first light emitting layer, or a hole injection layer and a hole transport layer may be formed in order. Similarly, the second organic layer 40b is formed by laminating a hole transport layer, a second light emitting layer, and an electron transport layer in order from the common lower electrode 26c side. Here, an electron injection layer may be formed on the second light emitting layer, or an electron transport layer and an electron injection layer may be sequentially formed. In addition, a hole injection layer may be formed under the second light emitting layer, or a hole injection layer and a hole transport layer may be formed in order. In adjacent pixels, the first organic layer 40a and the second organic layer 40b are provided separately from each other. Further, the pixel separation film 27 may be provided at a location where the first organic layer 40a and the second organic layer 40b are in contact with each other.

  In the display device 1b according to the present embodiment, the first light emitting layer and the second light emitting layer emit light by current flowing from one of the common lower electrode 26c and the upper electrode 41 to the other, respectively. In addition, current flows in the same direction through the first organic layer 40a and the second organic layer 40b. Specifically, a current flows through the first organic layer 40a from the common lower electrode 26c serving as the anode toward the upper electrode 41 serving as the cathode. In the second organic layer 40b, an electrode flows from the common lower electrode 26c serving as the anode toward the upper electrode 41 serving as the cathode.

  In the display device 1b according to this embodiment, light emission of the first organic layer 40a and the second organic layer 40b is controlled by one drive transistor DRT, and the first organic layer 40a and the second organic layer 40b are along the substrate 20. Adjacent to the direction. Therefore, a display device in which an increase in thickness is suppressed and an increase in the number of transistors is suppressed as compared with the case where a plurality of organic layers is stacked is provided.

  All display devices that can be implemented by a person skilled in the art based on the above-described display device as an embodiment of the present invention are included in the scope of the present invention as long as they include the gist of the present invention. For example, a display device in which each pixel has an organic layer that emits reddish purple and an organic layer that emits green light, and a display device in which each pixel has an organic layer that emits light blue and an organic layer that emits red light It belongs to the scope of the present invention.

  In the scope of the idea of the present invention, those skilled in the art can conceive various changes and modifications, and it is understood that these changes and modifications also belong to the scope of the present invention. For example, those in which the person skilled in the art appropriately added, deleted, or changed the design of the above-described embodiments, or those in which the process was added, omitted, or changed the conditions are also included in the gist of the present invention. As long as it is provided, it is included in the scope of the present invention.

  In addition, it is understood that other functions and effects brought about by the aspects described in the present embodiment are apparent from the description of the present specification or can be appropriately conceived by those skilled in the art to be brought about by the present invention.

  1, 1a, 1b Display device, 2 upper frame, 3 lower frame, 10 display panel, 11 display area, 12 video signal drive circuit, 12a control circuit, 13 scan signal drive circuit, 14 scan line, 15 video signal line, 16 Power line, 20 substrate, 21 base film, 22 first insulating layer, 23 second insulating layer, 24 interlayer insulating film, 25 planarization film, 26a first lower electrode, 26b second lower electrode, 26c common lower electrode, 27 Pixel separation film, 30 source electrode, 31 gate electrode, 32 semiconductor layer, 33 drain electrode, 34 ground electrode, 40a first organic layer, 40b, 40c second organic layer, 41, 41a upper electrode, 42 sealing film, 43 Filler, 44a First color filter, 44b Second color filter, 44c Third color filter, 45 Counter substrate, PX pixel, SST Pixel transistor, Cs storage capacitor, DRT1 first driving transistor, DRT2 second driving transistor, OLED1 first organic light emitting diode, OLED2 second organic light emitting diode.

Claims (11)

A first organic layer that is provided in each of the plurality of pixels and includes a first light emitting layer that emits light of a first color;
Provided in each of the plurality of pixels, is adjacent to the first organic layer in a direction orthogonal to the thickness of the first organic layer, and emits light in a second color that becomes white when mixed with the first color. A second organic layer including a second light emitting layer;
A lower electrode provided under each of the first organic layer and the second organic layer;
An upper electrode provided on each of the first organic layer and the second organic layer;
A color filter provided on each of the first organic layer and the second organic layer for each of the plurality of pixels, and transmitting light in a specific wavelength range;
Have
The first light emitting layer and the second light emitting layer emit light by current flowing from one of the lower electrode and the upper electrode to the other, respectively. In each of the plurality of pixels, the lower electrode provided below the first organic layer and the lower electrode provided below the second organic layer are provided separately,
In each of the plurality of pixels, the upper electrode provided on the first organic layer and the upper electrode provided on the second organic layer are provided continuously and integrally. The display device according to claim 1. The display device according to claim 2, wherein in the adjacent pixels among the plurality of pixels, the upper electrode is provided continuously and integrally. The display device according to claim 2, wherein current flows in the same direction in each of the first organic layer and the second organic layer. A control circuit that changes a first voltage applied to the lower electrode provided below the first organic layer and a second voltage applied to the lower electrode provided below the second organic layer; The display device according to any one of claims 2 to 4, further comprising: The display device according to claim 2, wherein the upper electrode is separately provided in an adjacent pixel among the plurality of pixels. The display device according to claim 2, wherein currents flow through the first organic layer and the second organic layer in directions opposite to each other. The display device according to claim 2, 6, or 7, wherein the upper electrode is formed of a charge generation layer. In each of the plurality of pixels, the lower electrode provided under the first organic layer and the lower electrode provided under the second organic layer are provided continuously and integrally.
In each of the plurality of pixels, the upper electrode provided on the first organic layer and the upper electrode provided on the second organic layer are provided continuously and integrally. The display device according to claim 1. In the adjacent pixels of the plurality of pixels, the lower electrode is provided separately,
The display device according to claim 9, wherein the upper electrode is continuously and integrally provided in adjacent pixels among the plurality of pixels. 11. The display device according to claim 9, wherein current flows in the same direction in each of the first organic layer and the second organic layer.

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