JP7387317B2 - Light-emitting panels, electronic devices, and methods of manufacturing light-emitting panels - Google Patents

Description

The present disclosure relates to a light emitting panel, an electronic device, and a method of manufacturing a light emitting panel.

Various types of light emitting panels using light emitting elements have been proposed. For example, OLED (organic light-emitting diode) panels using organic materials as light-emitting elements are on the market. Such OLED panels are disclosed, for example, in Patent Documents 1 to 3. Furthermore, a QLED (Quantum Dot light-emitting diode) panel using an inorganic material for the light-emitting layer of the light-emitting element is currently under development. Coating is used in forming the light emitting elements in OLED and QLED panels.

International publication WO2009/057342 Japanese Patent Application Publication No. 2008-216357 Japanese Patent Application Publication No. 2002-222695

Incidentally, in a coated type light emitting panel, pixels are formed by a coated film, so controlling the thickness of the coated film is important in reducing display unevenness such as brightness unevenness. Therefore, it is desirable to provide a light-emitting panel that can reduce display unevenness, an electronic device equipped with the same, and a method for manufacturing the light-emitting panel.

A light emitting panel according to an embodiment of the present disclosure includes a plurality of pixels, a plurality of pixels extending in a first direction, and partitioning two pixels adjacent in a second direction orthogonal to the first direction. The first regulating section and a plurality of second regulating sections extending in the second direction and partitioning two pixels adjacent in the first direction are provided. The plurality of pixels includes at least a first pixel and a second pixel that have different lengths in the first direction and share a light emitting layer. The first pixel and the second pixel are disposed adjacent to each other in the first direction via at least the second regulating section.

An electronic device according to an embodiment of the present disclosure includes the above-described light-emitting panel and a drive circuit that drives the above-described light-emitting panel.

A light emitting panel and an electronic device according to an embodiment of the present disclosure are provided with a first pixel and a second pixel that have different lengths in the first direction and share a light emitting layer. As a result, for example, when the light-emitting layers of the first pixel and the second pixel are formed by a coating method, the ink containing the raw material of the light-emitting layer is allowed to flow between the first pixel and the second pixel via the second regulating part. communicate. Therefore, the thickness of the light emitting layer can be made uniform regardless of the size of the first pixel and the second pixel.

A method for manufacturing a light emitting panel according to an embodiment of the present disclosure includes the following two methods.
(1) A display area, a non-display area around the display area, a plurality of pixel formation areas provided in both the display area and the non-display area, and a plurality of pixel formation areas extending in a first direction and extending in the first direction. A plurality of first regulating portions that partition two pixel formation regions adjacent to each other in a second orthogonal direction, and a plurality of first regulating portions that extend in the second direction and partition two pixel formation regions adjacent to each other in the first direction. The plurality of pixel forming regions include a first pixel and a second pixel having different lengths in the first direction, and the first pixel and the second pixel are provided with a second regulating portion. (2) By applying ink not only to the display area but also to the non-display area of the panel, A pixel including a light emitting layer is formed not only in each pixel formation region included in the area but also in each pixel formation region included in the non-display area.

In the method for manufacturing a light emitting panel according to an embodiment of the present disclosure, ink is applied not only to the display area but also to the non-display area of the panel, so that only each pixel formation area included in the display area is Instead, pixels including a coating film are formed also in each pixel formation area included in the non-display area. Thereby, the thickness of the light emitting layer can be made uniform regardless of the size of the first pixel and the second pixel.

According to a light emitting panel, an electronic device, and a method for manufacturing a light emitting panel according to an embodiment of the present disclosure, the thickness of the light emitting layer can be made uniform regardless of the size of the first pixel and the second pixel. This makes it possible to reduce display unevenness such as uneven brightness. Note that the effects of the present disclosure are not necessarily limited to the effects described herein, and may be any effects described in this specification.

1 is a diagram illustrating a schematic configuration example of a light emitting device according to an embodiment of the present disclosure. 2 is a diagram showing an example of a circuit configuration of each pixel in FIG. 1. FIG. 2 is a diagram illustrating a schematic configuration example of the light emitting panel of FIG. 1. FIG. 2 is a diagram illustrating a schematic configuration example of the light emitting panel of FIG. 1. FIG. 2 is a diagram illustrating a schematic configuration example of the light emitting panel of FIG. 1. FIG. 2 is a diagram illustrating a schematic configuration example of the light emitting panel of FIG. 1. FIG. 2 is a diagram illustrating a schematic configuration example of the light emitting panel of FIG. 1. FIG. FIG. 4 is a diagram showing an example of a cross-sectional configuration of the light emitting panel in FIG. 3 taken along line AA. FIG. 4 is a diagram showing an example of a cross-sectional configuration of the light emitting panel in FIG. 3 taken along line BB. FIG. 5 is a diagram showing an example of a cross-sectional configuration of the light emitting panel in FIG. 4 taken along line AA. FIG. 5 is a diagram showing an example of a cross-sectional configuration of the light emitting panel in FIG. 4 taken along line AA. FIG. 5 is a diagram showing an example of a cross-sectional configuration of the light emitting panel in FIG. 4 taken along line AA. 2 is a diagram illustrating an example of a manufacturing process of the light emitting panel of FIG. 1. FIG. FIG. 14 is a diagram illustrating a process example following FIG. 13; 2 is a diagram illustrating an example of a manufacturing process of the light emitting panel of FIG. 1. FIG. FIG. 16 is a diagram illustrating a process example following FIG. 15; 2 is a diagram illustrating a modified example of the schematic configuration of the light emitting panel of FIG. 1. FIG. 2 is a diagram illustrating a modified example of the schematic configuration of the light emitting panel of FIG. 1. FIG. FIG. 2 is a diagram illustrating a state in which the light emitting device of FIG. 1 is mounted on a dashboard of a moving object. 20 is a diagram illustrating a schematic configuration example of a light emitting panel in the light emitting device of FIG. 19. FIG. 20 is a diagram illustrating a modified example of the light emitting panel of FIG. 19. FIG. 20 is a diagram illustrating a modified example of the light emitting panel of FIG. 19. FIG. 23 is a diagram illustrating an example of a schematic configuration of the light emitting panel of FIG. 22. FIG. 20 is a diagram illustrating a modified example of the light emitting panel of FIG. 19. FIG. 25 is a diagram illustrating an example of a schematic configuration of the light emitting panel of FIG. 24. FIG. 3 to 12, FIG. 17, FIG. 18, and FIG. 20 to 25. FIG. 3 to 12, FIG. 17, FIG. 18, and FIG. 20 to 26. FIG. 8 is a diagram illustrating an example of how wobbling is performed in the light emitting panels of FIGS. 5 and 7. FIG. 8 is a diagram illustrating an example of how wobbling is performed in the light emitting panels of FIGS. 5 and 7. FIG. 8 is a diagram illustrating an example of how wobbling is performed in the light emitting panels of FIGS. 5 and 7. FIG. 8 is a diagram illustrating an example of how wobbling is performed in the light emitting panels of FIGS. 5 and 7. FIG. 1 is a diagram perspectively illustrating an example of the appearance of an electronic device including a light emitting device of the present disclosure. 1 is a diagram perspectively illustrating an example of the appearance of a lighting device including a light emitting element of the present disclosure.

Hereinafter, embodiments for carrying out the present disclosure will be described in detail with reference to the drawings. The embodiments described below are all preferred specific examples of the present disclosure. Therefore, the numerical values, shapes, materials, components, arrangement positions and connection forms of the components shown in the following embodiments are merely examples and do not limit the present disclosure. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims representing the most important concept of the present disclosure will be described as arbitrary constituent elements. Note that each figure is a schematic diagram and is not necessarily strictly illustrated. Further, in each figure, substantially the same configurations are denoted by the same reference numerals, and overlapping explanations will be omitted or simplified.

<1. Embodiment>
[composition]
FIG. 1 shows a schematic configuration example of a light emitting device 1 according to an embodiment of the present disclosure. FIG. 2 shows an example of the circuit configuration of each pixel 11 provided in the light emitting device 1. The light emitting device 1 includes, for example, a light emitting panel 10, a controller 20, and a driver 30. The driver 30 is mounted, for example, on the outer edge portion of the light emitting panel 10. The light emitting panel 10 has a plurality of pixels 11 arranged in a matrix. The controller 20 and the driver 30 drive the light emitting panel 10 (the plurality of pixels 11) based on a video signal Din and a synchronization signal Tin input from the outside.

(Light-emitting panel 10)
The light emitting panel 10 displays an image based on a video signal Din and a synchronization signal Tin input from the outside by driving each pixel 11 in an active matrix manner by the controller 20 and the driver 30. The light emitting panel 10 includes a plurality of scanning lines WSL extending in the row direction, a plurality of signal lines DTL and a plurality of power supply lines DSL extending in the column direction, and a plurality of pixels 11 arranged in a matrix. are doing.

The scanning line WSL is used to select each pixel 11, and supplies a selection pulse to each pixel 11 to select each pixel 11 in a predetermined unit (eg, pixel row). The signal line DTL is used to supply a signal voltage Vsig corresponding to the video signal Din to each pixel 11, and supplies a data pulse including the signal voltage Vsig to each pixel 11. The power line DSL supplies power to each pixel 11.

The plurality of pixels 11 provided in the light emitting panel 10 include a pixel 11 that emits red light, a pixel 11 that emits green light, and a pixel 11 that emits blue light. In the following, the pixel 11 that emits red light is referred to as pixel 11R, the pixel 11 that emits green light is referred to as pixel 11G, and the pixel 11 that emits blue light is referred to as pixel 11B. Among the plurality of pixels 11, pixels 11R, 11G, and 11B constitute a display pixel 12 (see FIG. 3, which will be described later), which is a display unit of a color image. Note that each display pixel 12 may further include, for example, a pixel 11 that emits another color (for example, white, yellow, etc.). Furthermore, each display pixel 12 may include, for example, a plurality of pixels 11 of the same color (for example, two pixels 11 that emit blue light). Therefore, the plurality of pixels 11 provided on the light emitting panel 10 are grouped into display pixels 12 by a predetermined number. In each display pixel 12, a plurality of pixels 11 are arranged in a line in a predetermined direction (eg, row direction).

Each signal line DTL is connected to an output end of a horizontal selector 31, which will be described later. For example, one signal line DTL is assigned to each pixel column. Each scanning line WSL is connected to an output end of a write scanner 32, which will be described later. For example, one scanning line WSL is assigned to each pixel row. Each power supply line DSL is connected to an output end of a power supply. For example, one power supply line DSL is assigned to each pixel row.

Each pixel 11 has a pixel circuit 11-1 and a light emitting element 11-2. The configuration of the light emitting element 11-2 will be described in detail later.

The pixel circuit 11-1 controls light emission and extinction of the light emitting element 11-2. The pixel circuit 11-1 has a function of holding a voltage written to each pixel 11 by write scanning, which will be described later. The pixel circuit 11-1 includes, for example, a drive transistor Tr1, a write transistor Tr2, and a storage capacitor Cs.

The write transistor Tr2 controls application of a signal voltage Vsig corresponding to the video signal Din to the gate of the drive transistor Tr1. Specifically, the write transistor Tr2 samples the voltage of the signal line DTL and writes the voltage obtained by sampling to the gate of the drive transistor Tr1. The drive transistor Tr1 is connected in series to the light emitting element 11-2. The drive transistor Tr1 drives the light emitting element 11-2. The drive transistor Tr1 controls the current flowing through the light emitting element 11-2 according to the magnitude of the voltage sampled by the write transistor Tr2. The holding capacitor Cs holds a predetermined voltage between the gate and source of the drive transistor Tr1. The holding capacitor Cs has a role of keeping the gate-source voltage Vgs of the drive transistor Tr1 constant during a predetermined period. Note that the pixel circuit 11-1 may have a circuit configuration in which various capacitors and transistors are added to the 2Tr1C circuit described above, or may have a circuit configuration different from the circuit configuration of the 2Tr1C described above. good.

Each signal line DTL is connected to an output end of a horizontal selector 31, which will be described later, and a source or drain of a write transistor Tr2. Each scanning line WSL is connected to an output terminal of a write scanner 32, which will be described later, and a gate of a write transistor Tr2. Each power supply line DSL is connected to the power supply circuit and the source or drain of the drive transistor Tr1.

The gate of write transistor Tr2 is connected to scanning line WSL. The source or drain of write transistor Tr2 is connected to signal line DTL. A terminal of the source and drain of the write transistor Tr2 that is not connected to the signal line DTL is connected to the gate of the drive transistor Tr1. The source or drain of the drive transistor Tr1 is connected to the power supply line DSL. Among the source and drain of the drive transistor Tr1, terminals not connected to the power supply line DSL are connected to the anode 21 of the light emitting element 11-2. One end of the storage capacitor Cs is connected to the gate of the drive transistor Tr1. The other end of the storage capacitor Cs is connected to the terminal on the light emitting element 11-2 side of the source and drain of the drive transistor Tr1. A cathode 27 of the light emitting element 11-2 is connected to a constant voltage line (for example, a ground line).

(Driver 30)
The driver 30 includes, for example, a horizontal selector 31 and a light scanner 32. The horizontal selector 31 applies an analog signal voltage Vsig input from the controller 20 to each signal line DTL, for example, in response to (in synchronization with) input of a control signal. The light scanner 32 scans the plurality of pixels 11 in predetermined units.

(controller 20)
Next, the controller 20 will be explained. For example, the controller 20 performs a predetermined correction on a digital video signal Din input from the outside, and generates a signal voltage Vsig based on the resulting video signal. The controller 20 outputs the generated signal voltage Vsig to the horizontal selector 31, for example. The controller 20 outputs control signals to each circuit within the driver 30, for example, in response to (synchronized with) a synchronization signal Tin input from the outside.

Next, the light emitting element 11-2 will be described with reference to FIGS. 3 to 10. 3, FIG. 4, FIG. 5, FIG. 6, and FIG. 7 show schematic configuration examples of the light emitting panel 10. FIG. 3 shows an example of a planar configuration within the display area 10A of the light emitting panel 10. The display area 10A is an area where images are displayed on the light emitting panel 10. The light emitting panel 10 has a non-display area 10B in addition to the display area 10A. The non-display area 10B is provided around the display area 10A. The non-display area 10B is an area corresponding to the frame of the light emitting panel 10. No video is displayed in the non-display area 10B. FIG. 4 shows an example of the planar configuration of the boundary between the display area 10A and the non-display area 10B in the light emitting panel 10. FIG. 5 shows an example of the planar configuration of the entire light emitting panel 10. FIG. 6 shows a modified example of the planar configuration of the boundary between the display area 10A and the non-display area 10B in the light emitting panel 10. FIG. 7 shows a modified example of the planar configuration of the entire light emitting panel 10.

FIG. 8 shows an example of a cross-sectional configuration of the light emitting panel 10 in FIG. 3 taken along line AA. FIG. 8 shows an example of the cross-sectional configuration of the pixels 11 in the row direction. FIG. 9 shows an example of a cross-sectional configuration of the light emitting panel 10 of FIG. 3 taken along the line BB. FIG. 9 shows an example of a cross-sectional configuration of a plurality of pixels 11 in the column direction. 10, 11, and 12 show examples of cross-sectional configurations of the light-emitting panel 10 of FIG. 4 taken along line AA. 10, FIG. 11, and FIG. 12 show examples of cross-sectional configurations near the boundary between the display area 10A and the non-display area 10B.

The light emitting panel 10 has a plurality of pixels 11 arranged in a matrix. As described above, the plurality of pixels 11 provided in the light emitting panel 10 include the pixel 11R, the pixel 11G, and the pixel 11B, and the display pixel 12 is assigned to each group of the pixels 11R, 11G, and 11B. There is. Note that each display pixel 12 may further include pixels 11 that emit other colors (for example, white, yellow, etc.) as described above. Furthermore, each display pixel 12 may include, for example, a plurality of pixels 11 of the same color (for example, two pixels 11 that emit blue light).

The pixel 11R includes a light emitting element 11-2 (11r) that emits red light. The pixel 11G includes a light emitting element 11-2 (11g) that emits green light. The pixel 11B includes a light emitting element 11-2 (11b) that emits blue light. The pixels 11R, 11G, and 11B have a stripe arrangement, and are arranged in rows for each color. In each pixel row, a plurality of pixels 11 that emit light of the same color are arranged side by side in the column direction.

The light emitting panel 10 has a substrate 16. The substrate 16 includes, for example, a base material 16A that supports each light emitting element 11-2, an insulating layer 14, etc., and a wiring layer 16B provided on the base material 16A. The base material 16A is, for example, a light-transmitting substrate having light-transmitting properties, such as a transparent substrate. The base material 16A is made of, for example, alkali-free glass, soda glass, non-fluorescent glass, phosphoric acid glass, boric acid glass, or quartz. The base material 16A may be made of, for example, acrylic resin, styrene resin, polycarbonate resin, epoxy resin, polyethylene, polyester, silicone resin, or alumina. When the substrate 16A is made of resin, for ease of formation, for example, the base material 16A is once formed on a substrate such as glass, and then, after the light emitting panel 10 is produced, it is mechanically peeled off from the glass base material. Alternatively, it may be formed by peeling using a laser. For example, a pixel circuit 11-1 of each pixel 11 is formed in the wiring layer 16B, and a planarization film for embedding the pixel circuit 11-1 of each pixel 11 is formed. The shape of the substrate 16 is, for example, a rectangle as shown in FIG.

The light emitting panel 10 further includes an insulating layer 14 on the substrate 16. The insulating layer 14 is for partitioning each pixel 11. The upper limit of the thickness of the insulating layer 14 is preferably within a range in which the shape can be controlled during manufacturing from the viewpoint of controlling film thickness variations and bottom line width. Further, it is more preferable that the upper limit of the thickness of the insulating layer 14 is within a range that can suppress an increase in takt time due to an increase in exposure time in an exposure process and suppress a decrease in productivity in a mass production process. Further, the lower limit of the thickness of the insulating layer 14 is determined by the resolution limit of the exposure machine and the material, since as the film thickness becomes thinner, the bottom line width needs to be made almost as thin as the film thickness. The thickness of the insulating layer 14 is such that it can at least cover the steps of the anode 21 from the viewpoint of insulation.

The insulating layer 14 has a plurality of column regulation parts 14C, a plurality of row regulation parts 14D, and a surrounding regulation part 14E. Each pixel 11 is divided by a plurality of column regulation parts 14C, a plurality of row regulation parts 14D, and a surrounding regulation part 14E. In FIGS. 3 to 7, the parts painted in black are the line regulation parts 14D, and among the parts painted in gray, the outer edge part of the light emitting panel 10 is the surrounding regulation part 14E, and the parts painted in gray are the line regulation parts 14D. Of these, the portion other than the surrounding restriction portion 14E is the row restriction portion 14C. The row regulating section 14C corresponds to a specific example of the "first regulating section" of the present disclosure. The line regulation section 14D corresponds to a specific example of the "second regulation section", "third regulation section", and "fourth regulation section" of the present disclosure.

Each column regulating section 14C extends in a predetermined direction (first direction), and each row regulating section 14D extends in a direction (second direction) orthogonal to the column regulating section 14C. The plurality of column regulating portions 14C extend in the column direction (first direction) and are arranged in parallel in the row direction (second direction) with predetermined gaps therebetween. The column regulating section 14C partitions two pixels 11 adjacent to each other in the row direction. The plurality of row regulating portions 14D extend in the row direction and are arranged in parallel in the column direction with predetermined gaps therebetween. The row regulating section 14D partitions two pixels 11 adjacent to each other in the column direction. The plurality of column regulation parts 14C and the plurality of row regulation parts 14D intersect with each other (for example, orthogonally), forming a grid-like layout. The circumference regulating portion 14E is provided at the outer edge portion of the light emitting panel 10 and has an annular shape. Each pixel 11 is surrounded by two adjacent column regulating portions 14C and two adjacent row regulating portions 14D at a location other than the outer edge portion of the light emitting panel 10. Each pixel 11 is surrounded by a column regulating section 14C, a row regulating section 14D, and a surrounding regulating section 14E at the outer edge portion of the light emitting panel 10. Therefore, each pixel 11 is partitioned by at least the column regulating section 14C and the row regulating section 14D among the column regulating section 14C, the row regulating section 14D, and the surrounding regulating section 14E.

The insulating layer 14 has an opening 14A in a region other than the outer edge portion of the light emitting panel 10 in a region surrounded by two adjacent column regulating parts 14C and two adjacent row regulating parts 14D. ing. The insulating layer 14 further has an opening 14A in the outer edge portion of the light emitting panel 10 in a region surrounded by the column regulating section 14C, the row regulating section 14D, and the surrounding regulating section 14E. The surface of an anode 21, which will be described later, is exposed at the bottom of each opening 14A. Therefore, holes supplied from the anode 21 exposed at the bottom of each opening 14A and electrons supplied from the cathode 27 (described later) are recombined in the luminescent layer 24 (described later). Luminescence occurs. Therefore, a region of the light-emitting layer 24, which will be described later, that faces the opening 14A becomes a light-emitting region 24A.

For example, as shown in FIGS. 8 to 10, the height of the row regulating portion 14D (height from the substrate 16) is lower than the height of the column regulating portion 14C (height from the substrate 16). There is. The height of the row regulating section 14D (height from the substrate 16) is, for example, approximately half the height of the column regulating section 14C. The height of the row regulating portion 14D (height from the substrate 16) is, for example, 0.1 μm to 2 μm, preferably 0.1 μm to 1 μm. The height of the row regulating portion 14C (height from the substrate 16) is, for example, 0.1 μm to 3 μm, preferably 0.3 μm to 1.5 μm. In this embodiment, when the height of the row regulating portion 14D (height from the substrate 16) is 0.5 μm, the height of the column regulating portion 14C (height from the substrate 16) is 1 μm. It has become. At this time, the plurality of pixels 11 arranged in the column direction are arranged in a band-shaped groove 17 (gap) formed by the two column regulating parts 14C on the left and right of these pixels 11, and for example, the pixels 11 are arranged in a band-shaped groove 17 (gap) formed by the two column regulating parts 14C on the left and right of these pixels 11. Constituent layers (for example, a hole injection layer 22, a hole transport layer 23, and a light emitting layer 24, which will be described later) are shared with each other. The plurality of pixels 11 lined up in the column direction are arranged along the column regulating section 14C, for example, as shown in FIGS. 3 to 7. The height of the circumference regulating portion 14E (height from the substrate 16) is higher than the height of the row regulating portion 14D (height from the substrate 16), for example, the height of the column regulating portion 14C (height from the substrate 16). 16). When the height of the row regulating section 14D is equal to the height of the column regulating section 14C, the row regulating section 14D and the column regulating section 14C may be formed all at once as the same layer.

The groove portion 17 is an area surrounded by the two row regulating portions 14C and the circumferential regulating portion 14E that are parallel to each other and adjacent to each other. The surfaces of each column regulating section 14C and surrounding regulating section 14E are relatively liquid repellent compared to the surface of each row regulating section 14D. If a base layer is formed by coating a film on the surface of each row regulation part 14D and the surface of the anode 21, the surface of each column regulation part 14C and surrounding regulation part 14E is compared with the surface of the base layer. It is desirable that the material has liquid repellency. The base layer refers to a layer applied immediately before ink is applied. For example, when applying an ink that forms the hole injection layer 22, the base layer points to the anode 21, and when applying an ink that forms the hole transport layer 23, the base layer points to the hole injection layer 21. , and when applying the ink forming the light-emitting layer 24, the base layer refers to the hole transport layer 23. Therefore, each row regulating section 14C and surrounding regulating section 14E are arranged so that, for example, when forming the hole injection layer 22, the hole transport layer 23, and the light emitting layer 24 by a coating method, the ink can be applied to other adjacent groove sections 17. prevent it from flowing inside. The liquid repellency of each row regulating section 14C and surrounding regulating section 14E may be realized by the water repellency of the resin itself, or by imparting liquid repellency to the resin surface by fluorine plasma treatment or the like. Good too. Each row regulating section 14D has relatively lyophilicity compared to each column regulating section 14C and surrounding regulating section 14E. Therefore, each row regulating portion 14D does not prevent the ink from wetting and spreading within the groove portion 17, for example, when forming the hole injection layer 22, the hole transport layer 23, and the light emitting layer 24 by a coating method. Each row regulating section 14D is configured such that ink spreads over the surface of each row regulating section 14D, for example, when forming the hole injection layer 22, the hole transport layer 23, and the light emitting layer 24 by a coating method. Each column regulating section 14C and each row regulating section 14D are formed in different processes, for example.

Each light emitting element 11-2 includes, for example, an anode 21, a hole injection layer 22, a hole transport layer 23, a light emitting layer 24, an electron transport layer 25, an electron injection layer 26, and a cathode 27 on a substrate 16 in this order. It is an element.

The light emitting element 11-2 includes, for example, a light emitting layer 24, and an anode 21 and a cathode 27 arranged to sandwich the light emitting layer 24. The light emitting element 11-2 further includes, for example, a hole injection layer 22 and a hole transport layer 23 between the anode 21 and the light emitting layer 24 in this order from the anode 21 side. Note that at least one of the hole injection layer 22 and the hole transport layer 23 may be omitted. The light emitting element 11-2 further includes, for example, an electron transport layer 25 and an electron injection layer 26 between the light emitting layer 24 and the cathode 27 in this order from the light emitting layer 24 side. Note that at least one of the electron transport layer 25 and the electron injection layer 26 may be omitted. The light emitting element 11-2 includes, for example, an anode 21, a hole injection layer 22, a hole transport layer 23, a light emitting layer 24, an electron transport layer 25, an electron injection layer 26, and a cathode 27 in this order from the substrate 16 side. The device has a unique element structure. The light emitting element 11-2 may further include other functional layers.

The hole injection layer 22 is a layer for increasing hole injection efficiency. The hole transport layer 23 is a layer for transporting holes injected from the anode 21 to the light emitting layer 24. The light-emitting layer 24 is a layer that emits light of a predetermined color by recombining electrons and holes. The electron transport layer 25 is a layer for transporting electrons injected from the cathode 27 to the light emitting layer 24. The electron injection layer 26 is a layer for increasing electron injection efficiency. At least one of the hole injection layer 22 and the electron injection layer 26 may be omitted. Each light emitting element 11-2 may further include layers other than those described above.

The anode 21 is formed on the substrate 16, for example. The anode 21 is, for example, aluminum (Al), silver (Ag), an alloy of aluminum or silver, or a reflective electrode having reflective properties. Note that the anode 21 is not limited to a reflective electrode, and may be, for example, a transparent electrode having light-transmitting properties. Examples of the material of the transparent electrode include transparent conductive materials such as ITO (Indium Tin Oxide) and IZO (Indium Zinc Oxide). The anode 21 may be a layered structure of a reflective electrode and a transparent electrode. The edge of the anode 21 is, for example, embedded in the insulating layer 14. When the edge of the anode 21 is embedded in the insulating layer 14, the size of the pixel 11 can be changed by changing the size of each opening 14A (specifically, the size of the bottom of each opening 14A). It becomes possible to adjust the size (area) and the size (area) of the light emitting region 24A.

The cathode 27 is, for example, a transparent electrode such as an ITO film. Note that the cathode 27 is not limited to a transparent electrode, and may be a reflective electrode having light reflectivity. As the material for the reflective electrode, for example, aluminum (Al), magnesium (Mg), silver (Ag), aluminum-lithium alloy, magnesium-silver alloy, etc. are used. In this embodiment, when the substrate 16 and the anode 21 have reflective properties and the cathode 27 has translucent properties, the light emitting element 11-2 is a top-emitting device in which light is emitted from the cathode 27 side. It has a structure. Note that in this embodiment, when the substrate 16 and the anode 21 are translucent and the cathode 27 is reflective, the light emitting element 11-2 emits light from the substrate 16 side. It has a bottom emission structure.

The hole injection layer 22 is made of an organic material such as a conductive polymer material. The hole injection layer 22 is formed, for example, by applying an organic polymer solution of a conductive polymer material such as PEDOT (a mixture of polythiophene and polystyrene sulfonic acid) onto the anode 21 and drying it. In this case, the hole injection layer 22 is constituted by a coating film. When the hole transport layer 23 is formed by coating, the hole injection layer 22 is formed of a material that is insoluble in the coating solution for the hole transport layer 23 or a material crosslinked by heat treatment or the like.

The hole transport layer 23 has a function of transporting holes injected from the anode 21 to the light emitting layer 24. The hole transport layer 23 is, for example, a coating film. The hole transport layer 23 is made of, for example, an organic material (hereinafter referred to as "hole transport material 23M") having a function of transporting holes injected from the anode 21 to the light emitting layer 24 as a main solute component. It is formed by applying and drying a solution. The hole transport layer 23 is composed of a hole transporting material 23M as a main component. When the light emitting layer 24 is formed by coating, the hole transport layer 23 is formed of a material that is insoluble in the coating solution for the light emitting layer 24 or a material crosslinked by heat treatment or the like.

The hole-transporting material 23M, which is a raw material for the hole-transporting layer 23, includes, for example, arylamine derivatives, triazole derivatives, oxadiazole derivatives, imidazole derivatives, polyarylalkane derivatives, pyrazoline derivatives and pyrazolone derivatives, and phenylenediamine. derivatives, amino-substituted chalcone derivatives, oxazole derivatives, styryl anthracene derivatives, fluorenone derivatives, hydrazone derivatives, stilbene derivatives, butadiene compounds, polystyrene derivatives, hydrazone derivatives, triphenylmethane derivatives, tetraphenylbenzine derivatives, etc., or combinations thereof. It is the material. The difference in the HOMO (Highest occupied molecular orbital) level of each material of the hole injection layer 22 and the hole transport layer 23 is preferably 0.5 eV or less in consideration of hole injection properties. .

The light-emitting layer 24 is a layer in which holes injected from the anode 21 and electrons injected from the cathode 27 recombine within the light-emitting layer 24 to generate excitons and emit light. The light emitting layer 24 is, for example, a coating film. The light-emitting layer 24 is formed by applying and drying a solution whose main solute is an organic material that generates excitons and emits light by recombining holes and electrons (hereinafter referred to as "organic light-emitting material 24M"). has been done. The light emitting layer 24 is composed of an organic light emitting material 24M as a main component. In the light emitting element 12r included in the pixel 11R, the organic light emitting material 24M includes a red organic light emitting material. In the light emitting element 12g included in the pixel 11G, the organic light emitting material 24M includes a green organic light emitting material. In the light emitting element 12b included in the pixel 11B, the organic light emitting material 24M includes a blue organic light emitting material.

The light-emitting layer 24 is composed of, for example, a single-layer organic light-emitting layer or a plurality of stacked organic light-emitting layers. When the light-emitting layer 24 is composed of a plurality of stacked organic light-emitting layers, the light-emitting layer 24 is, for example, a stack of a plurality of organic light-emitting layers having a common main component. At this time, all of the plurality of organic light emitting layers are coated films. The plurality of organic light-emitting layers are formed by applying and drying a solution containing the organic light-emitting material 24M as a main solute component.

The organic light emitting material 24M that is the raw material for the light emitting layer 24 may be, for example, a dopant material alone, but is more preferably a combination of a host material and a dopant material. That is, the light emitting layer 24 is configured to include a host material and a dopant material as the organic light emitting material 24M. The host material mainly has the function of charge transport of electrons or holes, and the dopant material has the function of light emission. The host material and dopant material are not limited to one type, and may be a combination of two or more types. The amount of the dopant material is preferably 0.01% by weight or more and 30% by weight or less, more preferably 0.01% by weight or more and 10% by weight or less, based on the host material.

As the host material for the light-emitting layer 24, for example, an amine compound, a condensed polycyclic aromatic compound, or a heterocyclic compound is used. As the amine compound, for example, monoamine derivatives, diamine derivatives, triamine derivatives, and tetraamine derivatives are used. Examples of the fused polycyclic aromatic compound include anthracene derivatives, naphthalene derivatives, naphthacene derivatives, phenanthrene derivatives, chrysene derivatives, fluoranthene derivatives, triphenylene derivatives, pentacene derivatives, and perylene derivatives. Examples of the heterocyclic compound include carbazole derivatives, furan derivatives, pyridine derivatives, pyrimidine derivatives, triazine derivatives, imidazole derivatives, pyrazole derivatives, triazole derivatives, oxazole derivatives, oxadiazole derivatives, pyrrole derivatives, indole derivatives, azaindole derivatives, Examples include azacarbazole, pyrazoline derivatives, pyrazolone derivatives, and phthalocyanine derivatives.

Further, as the dopant material for the light emitting layer 24, for example, a pyrene derivative, a fluoranthene derivative, an arylacetylene derivative, a fluorene derivative, a perylene derivative, an oxadiazole derivative, an anthracene derivative, or a chrysene derivative is used. Furthermore, a metal complex may be used as the dopant material for the light emitting layer 24. Examples of metal complexes include those having a metal atom and a ligand, such as iridium (Ir), platinum (Pt), osmium (Os), gold (Au), rhenium (Re), or ruthenium (Ru). can be mentioned.

The electron transport layer 25 has a function of transporting electrons injected from the cathode 27 to the light emitting layer 24. The electron transport layer 25 is composed of an organic material having electron transport properties (hereinafter referred to as "electron transport material 25M") as a main component. The electron transport layer 25 is made of, for example, a vapor deposited film or a sputtered film. The electron transport layer 25 has a charge blocking function that suppresses the penetration of charges (holes in this embodiment) from the light emitting layer 24 to the cathode 27, a function that suppresses quenching of the excited state of the light emitting layer 24, and the like. It is preferable that

The electron transport material 25M, which is a raw material for the electron transport layer 25, is, for example, an aromatic heterocyclic compound containing one or more heteroatoms in the molecule. Examples of the aromatic heterocyclic compound include compounds containing a pyridine ring, a pyrimidine ring, a triazine ring, a benzimidazole ring, a phenanthroline ring, a quinazoline ring, etc. in the skeleton. Further, the electron transport layer 25 may contain a metal having electron transport properties. The electron transporting layer 25 can improve the electron transporting property of the electron transporting layer 25 by containing a metal having an electron transporting property. Examples of metals contained in the electron transport layer 25 include barium (Ba), lithium (Li), calcium (Ca), potassium (K), cesium (Cs), sodium (Na), rubidium (Rb), and yttribium ( Yb) etc. can be used.

The electron injection layer 26 has a function of injecting electrons injected from the cathode 27 into the electron transport layer 25 and the light emitting layer 24. The electron injection layer 26 is made of, for example, a material having a function of promoting injection of electrons from the cathode 27 to the electron transport layer 25 and the light emitting layer 24 (electron injection material). The above-mentioned electron-injecting material may be, for example, an organic material having electron-injecting properties doped with a metal having electron-injecting properties. The doped metal contained in the electron injection layer 26 is, for example, the same metal as the doped metal contained in the electron transport layer 25. The electron transport layer 25 is made of, for example, a vapor deposited film or a sputtered film.

In this embodiment, each layer (for example, hole injection layer 22, hole transport layer 23, light emitting layer 24, electron transport layer 25, and electron injection layer 26) constituting the light emitting element 11-2 shares the groove portion 17. It is shared by each pixel 11. That is, each layer (for example, hole injection layer 22, hole transport layer 23, light emitting layer 24, electron transport layer 25, and electron injection layer 26) constituting the light emitting element 11-2 is shown in FIGS. 9 to 12, for example. As shown, it is formed to extend in the column direction within the groove portion 17, and is formed across each row regulating portion 14D (that is, on each row regulating portion 14D).

Further, in this embodiment, some layers in the light emitting element 11-2 (for example, the hole injection layer 22, the hole transport layer 23, and the light emitting layer 24) are connected to each pixel 11 in one display pixel 12. The pixel 11 in one display pixel 12 is formed separately. In other words, some of the layers (for example, the hole injection layer 22, the hole transport layer 23, and the light emitting layer 24) in the light emitting element 11-2 are separated by the column regulating section 14C, as shown in FIG. has been done. Further, in this embodiment, some layers (for example, electron transport layer 25 and electron injection layer 26) in light emitting element 11-2 are shared by each pixel 11 in one display pixel 12. That is, as shown in FIG. ) is formed on the row regulating portion 14C.

Further, in this embodiment, the cathode 27 is formed over the entire light emitting panel 10 (for example, the display area 10A and the non-display area 10B). Specifically, the cathode 27 is continuously formed over the entire surface of the electron injection layer 26, the column regulating section 14C, and the row regulating section 14D.

The light emitting element 11-2 further includes a layer (sealing layer 28) that protects and seals the light emitting element 11-2, as shown in FIGS. 8 to 12, for example. The sealing layer 28 is, for example, an inorganic thin film such as an SiNx film or a SiON film formed by a CVD method, a laminated film thereof, a resin material such as an epoxy resin or a vinyl resin, or a combination of these inorganic films and organic films. It is formed by a composite membrane.

The light emitting panel 10 has a plurality of pixels 11 also in the non-display area 10B, as shown in FIGS. 4, 5, and 10 to 12, for example. The plurality of pixels 11 in the non-display area 10B are dummy pixels 11D that do not emit light. That is, the plurality of pixels 11 in the non-display area 10B include a plurality of dummy pixels 11D, as shown in FIGS. 4, 5, and 10 to 12, for example. The dummy pixel 11D corresponds to a specific example of the "third pixel" of the present disclosure. For example, as shown in FIGS. 4 and 5, the plurality of dummy pixels 11D are arranged in the non-display area 10B along the boundary between the display area 10A and the non-display area 10B. FIG. 5 illustrates an example in which the display area 10A is surrounded by a plurality of dummy pixels 11D. The dummy pixel 11D and the pixel 11 arranged at the boundary between the display area 10A and the non-display area 10B in the display area 10A (hereinafter referred to as "pixel 11 near the boundary") are, for example, illustrated in FIGS. As shown in FIG. 2, the dummy pixels 11D and the pixels 11 near the boundary are arranged adjacent to each other in the column direction via a specific partitioned area (row regulation section 14D). The row regulating section 14D provided between the dummy pixel 11D and the pixel 11 near the boundary corresponds to a specific example of the "third regulating section" of the present disclosure. A row regulating section 14D is provided between the dummy pixel 11D and the pixel 11 near the boundary. The row regulating portion 14D provided between the dummy pixel 11D and the pixel 11 near the boundary is formed across the boundary between the display area 10A and the non-display area 10B.

The height of the row regulating section 14D that partitions the dummy pixel 11D and the pixels 11 near the boundary is lower than the height of the column regulating section 14C, for example, as shown in FIGS. 8 and 10 to 12. . At this time, the dummy pixels 11D arranged in the column direction and the pixels 11 near the boundary are arranged in the gap (inside the band-shaped groove 17) formed by the two column regulating sections 14C on the left and right of these dummy pixels 11D and the pixels 11 near the boundary. ), and share layers (for example, hole injection layer 22, hole transport layer 23, and light emitting layer 24) composed of coating films.

For example, as shown in FIG. 4, the length L5 of the row regulating section 14D that partitions the dummy pixel 11D and the pixels 11 near the boundary in the direction parallel to the extending direction of the column regulating section 14C is It is longer than L3 and L4 (described later). The length L3 is the length of the row regulating section 14D that partitions two first pixels 11x (described later) arranged in the column direction in a direction parallel to the extending direction of the column regulating section 14C. A row regulating section 14D that partitions two first pixels 11x (described later) arranged in the column direction corresponds to a specific example of a "fourth regulating section" of the present disclosure. The length L4 is the length of the row regulating section 14D that partitions the first pixel 11x and the second pixel 11y (described later) arranged in the column direction in a direction parallel to the extending direction of the column regulating section 14C. For example, the length L3 and the length L4 are equal to each other.

Each dummy pixel 11D has a common element (light emitting element 11-2) with the light emitting element 11-2 included in each pixel 11 provided in the display area 10A, for example, as shown in FIGS. 10 to 12. are doing. Furthermore, each dummy pixel 11D has a pixel circuit 11-1 electrically connected to the anode 21, for example, as shown in FIG. At this time, the driver 30 does not drive the pixel circuit 11-1 in each dummy pixel 11D. Each dummy pixel 11D may have a pixel circuit 11-1 electrically isolated from the anode 21, for example, as shown in FIG. In each dummy pixel 11D, for example, as shown in FIG. 12, the pixel circuit 11-1 itself may be omitted. In addition, in the light emitting panel 10, instead of providing the dummy pixels 11D in the non-display area 10B, for example, as shown in FIGS. 6 and 7, a row regulating section 14D extending in the column direction may be provided. . At this time, the row regulating portion 14D extending in the column direction is formed across the boundary between the display area 10A and the non-display area 10B.

By the way, as shown in FIGS. 4 to 7 and 10 to 12, the plurality of pixels 11 in the display area 10A include at least a plurality of pixels 11 (first pixel 11x, second pixel 11y). It is included. That is, the first pixel 11x and the second pixel 11y are arranged in the display area 10A. The first pixel 11x corresponds to a specific example of the "first pixel" of the present disclosure. The second pixel 11y corresponds to a specific example of the "second pixel" of the present disclosure. The first pixel 11x and the second pixel 11y are arranged adjacent to each other in the column direction. A partitioned area (row regulation section 14D) is provided between the first pixel 11x and the second pixel 11y. The first pixel 11x and the second pixel 11y are arranged adjacent to each other in the column direction (first direction) via a partitioned area (row regulating section 14D). The first pixel 11x and the second pixel 11y arranged adjacent to each other in the column direction share a layer formed of a coating film (for example, a hole injection layer 22, a hole transport layer 23, and a light emitting layer 24). ing.

The height of the row regulating section 14D that partitions the first pixel 11x and the second pixel 11y is, for example, lower than the height of the column regulating section 14C, as shown in FIGS. 8 to 12. At this time, the first pixel 11x and the second pixel 11y arranged in the column direction are arranged in a gap (inside the band-shaped groove part 17) formed by the two column regulating parts 14C on the left and right of the first pixel 11x and the second pixel 11y. ), and are arranged along the two column regulating portions 14C on the left and right of the first pixel 11x and the second pixel 11y. Further, the length L4 in the column direction of the row regulating portion 14D that partitions the first pixel 11x and the second pixel 11y is equal to the length L3, as shown in FIGS. 4 and 6, for example. .

The first pixel 11x and the second pixel 11y have different lengths in the column direction. The length L2 of the second pixel 11y in the column direction is shorter than the length L1 of the first pixel 11x in the column direction. That is, the plurality of pixels 11 in the display area 10A include a plurality of pixels 11 (first pixel 11x, second pixel 11y) having different lengths in the column direction.

The first pixel 11x and the second pixel 11y are included in mutually different display pixels 12. The first pixel 11x is included in one of two display pixels 12 that are adjacent to each other in the column direction (first direction). The second pixel 11y is included in the other of the two display pixels 12 adjacent to each other in the column direction (first direction). A plurality of display pixels 12 (hereinafter referred to as "display pixels 12s") including a plurality of second pixels 11y are arranged in the display area 10A at the boundary between the display area 10A and the non-display area 10B. That is, the second pixel 11y is arranged at the boundary between the display area 10A and the non-display area 10B. Among the plurality of display pixels 12 (hereinafter referred to as "display pixels 12n") consisting of the plurality of first pixels 11x, some display pixels 12n are in the display area 10A, and are located in the display area 10A and the non-display area. It is arranged between two display pixels 12s at the boundary with 10B. That is, the plurality of display pixels 12n and the plurality of display pixels 12s are arranged alternately along the boundary between the display area 10A and the non-display area 10B, for example, as shown in FIGS. 4 to 7. There is. Further, some display pixels 12n among the plurality of display pixels 12n are adjacent in the column direction to each display pixel 12 arranged at the boundary between the display area 10A and the non-display area 10B in the display area 10A, for example. It is arranged as follows. In a region of the display area 10A excluding the plurality of display pixels 12 provided at the outer edge, for example, a plurality of display pixels 12n are arranged in a matrix. As a result, the boundaries of the images generated by the plurality of display pixels 12s and the plurality of display pixels 12n have a smoother curve than the boundaries of the images generated when the display pixels 12s are not used.

The pixel size (area of the opening 14A) of each pixel 11 (second pixel 11y) included in the display pixel 12s and the pixel size (area of the opening 14A) of each pixel 11 (first pixel 11x) included in the display pixel 12n area) are different from each other. Specifically, the pixel size (area of the opening 14A) of each pixel 11 (second pixel 11y) included in the display pixel 12s is the pixel size of each pixel 11 (first pixel 11x) included in the display pixel 12n. (area of opening 14A). At this time, the pixel ratio (ratio of the area of the opening 14A) of each pixel 11 (second pixel 11y) included in the display pixel 12s and the pixel ratio of each pixel 11 (first pixel 11x) included in the display pixel 12n (ratio of the area of the opening 14A) is preferably equal to each other. Since the brightness of the light emitting element 11-2 is controlled by the current density, when the pixel ratios of the display pixels 12s and 12n are equal to each other, the brightnesses of the display pixels 12s and 12n are equal to each other. Furthermore, when the pixel ratios of the display pixels 12s and 12n are equal to each other, the chromaticity ratios of the display pixels 12s and 12n are also equal to each other. Note that the pixel sizes of each pixel 11 (second pixel 11y) included in the display pixel 12s may be equal to each other or may be different from each other. Furthermore, the pixel sizes of each pixel 11 (first pixel 11x) included in the display pixel 12n may be equal to each other or may be different from each other.

[Production method]
Next, a method for manufacturing the light emitting panel 10 according to this embodiment will be described.

FIG. 13 shows an example of the manufacturing process of the light emitting panel 10. FIG. 13 shows a display area 10A, a non-display area 10B around the display area 10A, a plurality of pixel formation areas 11a provided in both the display area 10A and the non-display area 10B, and a plurality of column regulating parts 14C. A panel 10a is illustrated that includes a plurality of row regulating sections 14D and a surrounding regulating section 14E.

In the panel 10a, the plurality of pixel formation regions 11a include a first pixel 11ax in the process of forming the first pixel 11x, a second pixel 11ay in the process of forming the second pixel 11y, and a second pixel 11ay in the process of forming the dummy pixel 11D. A certain third pixel 11aD is included, and the first pixel 11ax and the second pixel 11ay are arranged adjacent to each other in the column direction via the column regulating section 14C. For example, a hole transport layer 23 is formed on the bottom surface of the first pixel 11ax, the second pixel 11ay, and the third pixel 11aD.

First, a panel 10a and a coating head 40 as shown in FIG. 13 are prepared. The application head 40 is, for example, an ejection device in which a plurality of ejection heads are arranged in a line, and is configured to periodically apply (eject) one line of ink. Note that the coating head 40 may be an ejection device in which a plurality of ejection heads are arranged in a plurality of rows within a width of one pixel line. In this case, it is possible to adjust the ejection amount more finely than when a plurality of ejection heads are arranged in a line. Next, as shown in FIG. 14, for example, one line of ink is periodically applied (discharged) from the application head 40 while scanning the application head 40 in the row direction.

At this time, by applying (discharging) ink not only to the display area 10A but also to the non-display area 10B of the panel 10a, not only each pixel forming area 11a included in the display area 10A but also the non-display area 10B is coated (discharged). A coating film is also formed on each pixel formation region 11a included in the display region 10B. For example, in the non-display area 10B, an unformed area 10B2 of the pixel formation area 11a, a plurality of pixel formation areas 11a (formation area 10B1 of the pixel formation area 11a) in the non-display area 10B, and a plurality of pixels in the display area 10A. A coating film is formed on the formation region 11a. Here, in the non-display area 10B, application (discharge) of ink is started from the unformed area 10B2 of the pixel formation area 11a, and then the plurality of pixel formation areas 11a (formation of the pixel formation area 11a) in the non-display area 10B is started. area 10B1), a plurality of pixel formation areas 11a in the display area 10A, a plurality of pixel formation areas 11a in the non-display area 10B (formation area 10B1 of the pixel formation area 11a), and an unused portion of the pixel formation area 11a in the non-display area 10B. Ink is applied (discharged) in the order of formation region 10B2. At this time, a plurality of pixel forming regions 11a (forming regions 10B1 of pixel forming regions 11a) (furthermore, surrounding regulating portions 14E) in the non-display region 10B on both sides of the direction perpendicular to the scanning direction of the coating head 40 are Alternatively, ink may be applied (discharged).

In this way, pixels containing the coating film are formed not only in each pixel formation area 11a included in the display area 10A but also in each pixel formation area 11a included in the non-display area 10B.

Incidentally, the coating film is shared between two pixel formation regions 11a adjacent in the column direction. The coating film becomes the light-emitting layer 24, for example, by passing through a predetermined drying process. The thickness of the light emitting layer 24 is controlled by the number of ink droplets ejected. Regarding the film thickness of the light-emitting layer 24, it is necessary to control the film thickness on the order of nanometers, and it is essentially difficult to control coating films with different pixel sizes to the same film thickness by controlling the number of droplets. . However, by applying this embodiment, even if the pixel sizes are different, the coating liquid is shared after coating, so it becomes very easy to form and control the same film thickness. In addition, by reducing the droplet size and applying one line with more coating nozzles, finer control of film thickness becomes possible. Note that the hole injection layer 22 and hole transport layer 23 below the light emitting layer 24 can be formed by using a similar method.

Furthermore, the ink applied from the coating head 40 remains in the form of droplets at both ends of the surface of the circumference regulating portion 14E in a direction parallel to the scanning direction of the coating head 40. This is because the surrounding regulating portion 14E has a property of emitting ink applied from the application head 40. Note that when ink is applied (discharged) to the circumferential regulating portions 14E on both sides of the coating head 40 in the direction orthogonal to the scanning direction, the coating head 40 out of the surface of the circumferential regulating portions 14E At both ends in the direction orthogonal to the scanning direction, the ink applied from the application head 40 remains in the form of droplets, and is then dried through a predetermined drying process without spreading into the pixels 11.

In this way, by applying (discharging) ink also to the surface of the non-display area 10B, for example, compared to the case where ink is applied (discharging) only to the display area 10A, the ink vapor in the display area 10A is reduced. The pressure can be made more even. By making the vapor pressure of the ink uniform in the display area 10A, the drying conditions for the coating film formed in each pixel forming area 11a of the display area 10A also become uniform. As a result, the thickness of the light emitting layer 24 and the like formed in each pixel formation region 11a of the display region 10A can be made uniform. Further, due to thermal instability of the coating head 40 at the beginning of coating, the amount of ink ejected from the coating head 40 at the beginning of coating may not be stable. Even in such a case, by applying (discharging) ink to the surface of the non-display area 10B before applying (discharging) ink to the display area 10A, the ink discharging of the coating head 40 can be stabilized. This makes it possible to apply (discharge) ink to the display area 10A. Further, in the unformed area 10B2 of the pixel forming area 11a, the surrounding regulating portion 14E has liquid repellency, so that it can remain in the form of a droplet without getting wet and spreading. Therefore, the thickness of the light emitting layer 24 and the like formed in each pixel formation region 11a of the display region 10A can be made uniform.

FIG. 15 shows a modified example of the manufacturing process of the light emitting panel 10. FIG. 15 shows a display area 10A, a non-display area 10B around the display area 10A, a plurality of pixel formation areas 11a provided in both the display area 10A and the non-display area 10B, and a plurality of column regulating parts 14C. A panel 10a is illustrated that includes a plurality of row regulating sections 14D and a surrounding regulating section 14E.

In the panel 10a, the plurality of pixel formation regions 11a include a first pixel 11ax in the process of forming the first pixel 11x, a second pixel 11ay in the process of forming the second pixel 11y, and a second pixel 11ay in the process of forming the dummy pixel 11D. A certain third pixel 11aD is included, and the first pixel 11ax and the second pixel 11ay are arranged adjacent to each other in the column direction via the column regulating section 14C. For example, a hole transport layer 23 is formed on the bottom surface of the first pixel 11ax, the second pixel 11ay, and the third pixel 11aD.

First, a panel 10a and a coating head 40 as shown in FIG. 15 are prepared. The application head 40 is, for example, an ejection device in which a plurality of ejection heads are arranged in a line, and is configured to periodically apply (eject) one line of ink. Next, as shown in FIGS. 15 and 16, for example, one line of ink is periodically applied (discharged) from the application head 40 while scanning the application head 40 in the column direction.

At this time, by applying (discharging) ink not only to the display area 10A but also to the non-display area 10B of the panel 10a, not only each pixel forming area 11a included in the display area 10A but also the non-display area 10B is coated (discharged). A coating film is also formed on each pixel formation region 11a included in the display region 10B. For example, in the non-display area 10B, an unformed area 10B2 of the pixel formation area 11a, a plurality of pixel formation areas 11a (formation area 10B1 of the pixel formation area 11a) in the non-display area 10B, and a plurality of pixels in the display area 10A. A coating film is formed on the formation region 11a. Here, in the non-display area 10B, application (discharge) of ink is started from the unformed area 10B2 of the pixel formation area 11a, and then the plurality of pixel formation areas 11a (formation of the pixel formation area 11a) in the non-display area 10B is started. area 10B1), a plurality of pixel formation areas 11a in the display area 10A, a plurality of pixel formation areas 11a in the non-display area 10B (formation area 10B1 of the pixel formation area 11a), and an unused portion of the pixel formation area 11a in the non-display area 10B. Ink is applied (discharged) in the order of formation region 10B2. At this time, a plurality of pixel forming regions 11a (forming regions 10B1 of pixel forming regions 11a) (furthermore, surrounding regulating portions 14E) in the non-display region 10B on both sides of the direction perpendicular to the scanning direction of the coating head 40 are Alternatively, ink may be applied (discharged).

In this way, pixels containing the coating film are formed not only in each pixel formation area 11a included in the display area 10A but also in each pixel formation area 11a included in the non-display area 10B.

Incidentally, the coating film is shared between two pixel formation regions 11a adjacent in the column direction. The coating film becomes the light-emitting layer 24, for example, by passing through a predetermined drying process.

Furthermore, the ink applied from the coating head 40 remains in the form of droplets at both ends of the surface of the circumference regulating portion 14E in a direction parallel to the scanning direction of the coating head 40. This is because the surrounding regulating portion 14E has a property of emitting ink applied from the application head 40. Note that when ink is applied (discharged) to the circumferential regulating portions 14E on both sides of the coating head 40 in the direction orthogonal to the scanning direction, the coating head 40 out of the surface of the circumferential regulating portions 14E At both ends in the direction orthogonal to the scanning direction, the ink applied from the application head 40 remains in the form of droplets, and is then dried through a predetermined drying process without spreading into the pixels 11.

In this way, by applying (discharging) ink also to the surface of the non-display area 10B, for example, compared to the case where ink is applied (discharging) only to the display area 10A, the ink vapor in the display area 10A is reduced. The pressure can be made more even. By making the vapor pressure of the ink uniform in the display area 10A, the drying conditions for the coating film formed in each pixel forming area 11a of the display area 10A also become uniform. As a result, the thickness of the light emitting layer 24 and the like formed in each pixel formation region 11a of the display region 10A can be made uniform. Further, due to thermal instability of the coating head 40 at the beginning of coating, the amount of ink ejected from the coating head 40 at the beginning of coating may not be stable. Even in such a case, by applying (discharging) ink to the surface of the non-display area 10B before applying (discharging) ink to the display area 10A, the ink discharging of the coating head 40 can be stabilized. This makes it possible to apply (discharge) ink to the display area 10A. Further, in the unformed area 10B2 of the pixel forming area 11a, the surrounding regulating portion 14E has liquid repellency, so that it can remain in the form of a droplet without getting wet and spreading. Therefore, the thickness of the light emitting layer 24 and the like formed in each pixel formation region 11a of the display region 10A can be made uniform. By adopting a coating method in which the coating head 40 scans in the column direction as shown in FIG. has the advantage of being unaffected.

[effect]
Next, effects of the light emitting panel 10 and the light emitting device 1 including the same according to the present embodiment will be explained.

In this embodiment, a first pixel 11x and a second pixel 11y, which have different lengths in the column direction and share the light emitting layer 24, are provided. The height of the partition area (row regulation part 14D) which partitions the first pixel 11x and the second pixel 11y is lower than the height of the column regulation part 14C which partitions two adjacent pixels 11 in the row direction. . As a result, for example, when the light-emitting layer 24 of the first pixel 11x and the second pixel 11y is formed by a coating method, ink containing the raw material of the light-emitting layer 24 passes through the divided area (line regulating portion 14D) to the first pixel 11x and the second pixel 11y. The first pixel 11x and the second pixel 11y are communicated with each other. Therefore, the thickness of the light emitting layer 24 can be made uniform regardless of the size of the first pixel 11x and the second pixel 11y. As a result, display unevenness such as brightness unevenness can be reduced. Furthermore, for example, when the hole injection layer 22 and the hole transport layer 23 of the first pixel 11x and the second pixel 11y are also formed by a coating method, an ink containing the raw material of the hole injection layer 22 and the hole transport layer 23 is added. communicates between the first pixel 11x and the second pixel 11y via the divided area (line regulating section 14D). Therefore, the thicknesses of the hole injection layer 22 and the hole transport layer 23 can be made uniform regardless of the sizes of the first pixel 11x and the second pixel 11y. As a result, display unevenness such as brightness unevenness can be further reduced.

Furthermore, in the present embodiment, the plurality of pixels 11 are grouped as display pixels 12 by a predetermined number, and the first pixel 11x is one of two display pixels 12 adjacent to each other in the column direction. The second pixel 11y is included in the other of the two display pixels 12 adjacent to each other in the column direction. Further, the first pixel 11x and the second pixel 11y are arranged adjacent to each other in the column direction. As a result, for example, when the light-emitting layer 24 of the first pixel 11x and the second pixel 11y is formed by a coating method, ink containing the raw material of the light-emitting layer 24 passes through the divided area (line regulating portion 14D) to the first pixel 11x and the second pixel 11y. The first pixel 11x and the second pixel 11y are communicated with each other. Therefore, the thickness of the light emitting layer 24 can be made more uniform than in the case where the first pixel 11x and the second pixel 11y are completely separated during coating. In other words, the thickness of the light emitting layer 24 can be made uniform regardless of the size of the first pixel 11x and the second pixel 11y. As a result, display unevenness such as brightness unevenness can be reduced.

Further, in the present embodiment, the first pixel 11x and the second pixel 11y are arranged in the gap (inside the groove 17) between two adjacent column regulating parts 14C. At this time, the first pixel 11x and the second pixel 11y are arranged along the column regulating section 14C. As a result, for example, when the light-emitting layer 24 of the first pixel 11x and the second pixel 11y is formed by a coating method, ink containing the raw material of the light-emitting layer 24 passes through the divided area (line regulating portion 14D) to the first pixel 11x and the second pixel 11y. The first pixel 11x and the second pixel 11y are communicated with each other. Therefore, the thickness of the light emitting layer 24 can be made more uniform than in the case where the first pixel 11x and the second pixel 11y are completely separated during coating. In other words, the thickness of the light emitting layer 24 can be made uniform regardless of the size of the first pixel 11x and the second pixel 11y. As a result, display unevenness such as brightness unevenness can be reduced.

Further, in the present embodiment, the length L2 of the second pixel 11y is shorter than the length L1 of the first pixel 11x, and the second pixel 11y is divided into the display area 10A and the non-display area 10B. located on the border of As a result, the boundaries of images generated by the plurality of display pixels 12s and the plurality of display pixels 12n can be made into smoother curves compared to the boundaries of images generated when the display pixels 12s are not used. .

Further, in this embodiment, it is assumed that the plurality of pixels 11 include a plurality of dummy pixels 11D (third pixels) arranged in the non-display area 10B. In this case, the second pixel 11y and the dummy pixel 11D are arranged adjacent to each other in the column direction via a specific partitioned area (row regulation section 14D) that partitions the second pixel 11y and the dummy pixel 11D. At this time, the length L5 in the column direction of the specific partitioned area (row regulation part 14D) is longer than the length L4 of the partitioned area (row regulation part 14D) that partitions the first pixel 11x and the second pixel 11y. It has become. As a result, the profile of the boundary between the display area 10A and the non-display area 10B can be adjusted by simply changing the length L5 of the specific partition area (line regulating portion 14D) that partitions the second pixel 11y and the dummy pixel 11D. Can be done. Therefore, the boundary between the display area 10A and the non-display area 10B can be made into a smoother curve than when the second pixel 11y is not used. In addition, in the present embodiment, when forming a plurality of dummy pixels 11D in the non-display area 10B, in the manufacturing process, before and after applying (discharging) ink to the display area 10A, the non-display area 10B is Ink is applied (discharged) to the surface. Thereby, uneven drying of the ink applied (discharged) to the display area 10A can be suppressed, so that the thickness of the light emitting layer 24 can be made uniform. As a result, display unevenness such as brightness unevenness can be reduced.

<2. Modified example>
Next, a modification of the light emitting panel 10 according to the above embodiment will be described.

[Modification A]
FIG. 17 shows a modified example of the schematic configuration of the light emitting panel 10 according to the above embodiment. In the display area 10A of the light emitting panel 10 according to the above embodiment, the plurality of pixels 11 include a plurality of first pixels 11x arranged in a row in the column direction and a plurality of second pixels arranged in a row in the column direction. 11y may be included. In this case, the length L6 in the column direction of the region (row regulating portion 14D) that partitions between the two second pixels 11y adjacent in the column direction is the length L6 between the two first pixels 11x adjacent in the column direction. is shorter than the length L3 in the column direction of the region (row regulating section 14D) that partitions the first pixel 11x and the second pixel 11y, and the length L4 of the row regulating section 14D (sectioning region) that partitions the first pixel 11x and the second pixel 11y. is equal to In this case, the area made up of the plurality of second pixels 11y is a high-definition area (high-definition area 10C) compared to other areas in the light emitting panel 10.

In this manner, in this modification, the high-definition area 10C is provided within the display area 10A. Therefore, the pixel rows in the high-definition region 10C do not match the pixel rows in the display region 10A excluding the high-definition region 10C. Therefore, in this modification, a plurality of scanning lines WSL are arranged at a pitch corresponding to the pixel rows in the high-definition area 10C. Furthermore, in the high-definition area 10C, one scanning line WSL is assigned to each pixel row, and in the display area 10A, excluding the high-definition area 10C, one or more scanning lines are assigned to each pixel row. scanning line WSL is assigned. Therefore, in this modification, the light scanner 32 drives each pixel 11 in the high-definition area 10C via a plurality of scanning lines WSL assigned to each pixel row. , each pixel 11 in the area except the high-definition area 10C is driven via a plurality of scanning lines WSL, one or two or more allotted to each pixel row.

In this modification, the height of the row regulating section 14D that partitions the first pixel 11x and the second pixel 11y is lower than the height of the column regulating section 14C, as in the above embodiment. Further, the height of the row regulating section 14D that partitions the two second pixels 11y adjacent to each other is lower than the height of the column regulating section 14C. As a result, for example, when the light emitting layer 24 is formed on the first pixel 11x and the second pixel 11y by a coating method, ink containing the raw material for the light emitting layer 24 is transferred to the first pixel 11x and the second pixel 11y via the line regulating section 14D. 11x and the second pixel 11y. Therefore, the thickness of the light emitting layer 24 can be made more uniform than when the first pixel 11x and the second pixel 11y are completely separated during coating. In other words, the thickness of the light emitting layer 24 can be made uniform regardless of the size of the first pixel 11x and the second pixel 11y. As a result, display unevenness such as brightness unevenness can be reduced.

In this modification, the size of the pixel circuit 11-1 provided in each pixel 11 in the high-definition area 10C and the size of the pixel circuit 11-1 provided in each pixel 11 in the display area 10A excluding the high-definition area 10C are determined. The sizes of the pixel circuits 11-1 may be the same or different.

Note that in this modification, for example, as shown in FIG. 18, the length L6 may be equal to the length L3 or the length L4. In this case, compared to the above embodiment, the aperture ratio of each pixel 11 in the display area 10A excluding the high-definition area 10C can be increased.

[Modified example B]
FIG. 19 shows how the light emitting device 1 (light emitting panel 10) according to the above embodiment and its modification is mounted on the dashboard 130 of the moving body 100. When driving the mobile object 100, the driver 200 visually checks the vehicle body 110 and the surroundings of the mobile object 100 through the windshield 120. At this time, while driving, the driver 200 pays attention to various information displayed on the dashboard 130 (for example, speed, temperature, road map, etc.) as necessary.

Here, the light emitting device 1 (light emitting panel 10) is arranged along the surface of the dashboard 130. At this time, for example, the light emitting panel 10 may be curved or bent. For example, as shown in FIG. 19, the lower part of the light-emitting panel 10 is a substantially parallel screen when viewed from the driver 200, and the upper part of the light-emitting panel 10 is diagonally forward when viewed from the driver 200. Assume that the screen has fallen down. When the light-emitting device 1 (light-emitting panel 10) has such a convex shape when viewed from the driver 200, the light-emitting panel 10 is, for example, as shown in FIG. It has a plurality of second pixels 11y arranged in a matrix in the region 10D), and it has a plurality of first pixels 11x arranged in a matrix in the upper part of the light emitting panel 10 (slanted region 10E). You can leave it there. At this time, the vertical region 10D is arranged closer to the driver 200 than the inclined region 10E.

At this time, the lengths L1 and L2 of the first pixel 11x and the second pixel 11y in the column direction are the apparent pixels of the first pixel 11x and the second pixel 11y when the light emitting panel 10 is viewed from a specific direction. The difference in size (area) is set to be smaller than the difference in actual pixel size (area) between the first pixel 11x and the second pixel 11y. Specifically, in the vertical region 10D, a plurality of second pixels 11y are arranged along the column regulating section 14C, and in the inclined region 10E, a plurality of first pixels 11x are arranged along the column regulating section 14C. ing.

In this modification, furthermore, the length L3 of the partition area (row regulating portion 14D) partitioning between the two first pixels 11x adjacent to each other in the column direction is the length L3 of the partition area (row regulating portion 14D) between the two second pixels 11y adjacent to each other in the column direction. The length L6 is longer than the length L6 of the partition area (row regulation part 14D) that partitions between the first pixel 11x and the second pixel 11y that are adjacent to each other in the column direction. 14D) is equal to the length L4. As a result, the way the image in the vertical area 10D is viewed by the driver 200 (scale, definition) and the way the image in the inclined area 10E is viewed by the driver 200 (scale, definition) are made equal to each other. can do. As a result, the visibility and display quality of the light emitting device 1 (light emitting panel 10) can be improved without depending on the bending of the light emitting panel 10.

For example, as shown in FIG. 21, the lower part of the light-emitting panel 10 is a screen that is tilted forward when viewed from the driver 200, and the upper part of the light-emitting panel 10 is a screen that is tilted forward when viewed from the driver 200. The screen may be substantially parallel. When the light emitting panel 10 has such a concave shape when viewed from the driver 200, the light emitting panel 10 has, for example, a plurality of light emitting panels arranged in a matrix on the upper part of the light emitting panel 10 (vertical area 10D). It has a first pixel 11x, and may have a plurality of second pixels 11y arranged in a matrix at the lower part of the light emitting panel 10 (slope area 10E). As a result, the way the image in the vertical area 10D is viewed by the driver 200 (scale, definition) and the way the image in the inclined area 10E is viewed by the driver 200 (scale, definition) are made equal to each other. can do. As a result, the visibility and display quality of the light emitting panel 10 can be improved without depending on the bending of the light emitting panel 10.

Further, for example, as shown in FIG. 22, the lower part of the light-emitting panel 10 is a substantially parallel screen when viewed from the driver 200, and the middle part of the light-emitting panel 10 is located in front of the screen when viewed from the driver 200. The screen may be tilted diagonally, and the upper part of the light emitting panel 10 may be a substantially parallel screen when viewed from the driver 200. When the light-emitting panel 10 has such a crank shape when viewed from the driver 200, the light-emitting panel 10 has, for example, as shown in FIG. The light-emitting panel has a plurality of first pixels 11x arranged in a matrix, and a plurality of second pixels 11y arranged in a matrix in the middle part (central region 10G) of the light-emitting panel 10. 10 (lower region 10H) may include a plurality of third pixels 11z that are arranged in a matrix and whose length L7 in the column direction is shorter than the length L2. At this time, the lower region 10H is arranged closer to the driver 200 than the upper region 10F and the middle region 10G.

At this time, the first pixel 11x, the second pixel 11y, and the third pixel 11z have different lengths L1, L2, and L7 in the column direction. The length L2 of the second pixel 11y in the column direction is shorter than the length L1 of the first pixel 11x in the column direction. The length L7 of the third pixel 11z in the column direction is shorter than the length L2 of the second pixel 11y in the column direction. That is, the plurality of pixels 11 in the display area 10A include a plurality of pixels 11 (first pixel 11x, second pixel 11y, third pixel 11z) whose lengths L1, L2, and L7 in the directions are different from each other. There is. As a result, the image of the upper part (upper region 10F) of the light emitting panel 10 seen by the driver 200 (scale, definition) and the image of the middle part (middle region 10G) of the light emitting panel 10 seen by the driver 200 are determined. The way the image of the lower part (lower area 10H) of the light-emitting panel 10 is viewed from the driver 200 (scale, definition) can be made equal to each other. As a result, the visibility and display quality of the light emitting panel 10 can be improved without depending on the bending of the light emitting panel 10.

Note that the light emitting panel 10 may be curved in a convex or concave shape. For example, as shown in FIG. 24, the forward inclination angle of the light-emitting panel 10 as viewed from the driver 200 may increase from the bottom to the top of the light-emitting panel 10. When the light-emitting panel 10 is curved in such a convex shape when viewed from the driver 200, for example, as shown in FIG. 25, the length of each pixel 11 in the light-emitting panel 10 in the column direction is , when viewed from the driver 200, the light emitting panel 10 may increase in size from the bottom toward the top. Thereby, it is possible to make the appearance (scale, definition) of the image on the entire light emitting panel 10 uniform from the driver 200. As a result, the visibility and display quality of the light emitting panel 10 can be improved without depending on the bending of the light emitting panel 10.

[Modification C]
FIG. 26 shows a modified example of the cross-sectional configuration of the light emitting panel 10 according to the above embodiment and its modified example. The light emitting panel 10 according to the above embodiment and its modifications may include a circularly polarizing plate 29 on the display surface, for example, as shown in FIG. 26. By providing the circularly polarizing plate 29 on the display surface, for example, even when the light emitting panel 10 is used in an environment where outside light enters, deterioration in the visibility and display quality of the light emitting panel 10 can be prevented.

Note that a color filter may be provided on the display surface instead of the circularly polarizing plate 29. Further, an anti-reflection film or an anti-glare film may be provided on the outermost surface. Moreover, a laminated film of an anti-reflection film and an anti-glare film may be provided on the outermost surface. Moreover, a touch panel may be further provided under the laminated film.

[Modification D]
In the above embodiment and its modifications, the height of the row regulating section 14D (height from the substrate 16) may be equal to the height of the column regulating section 14C (height from the substrate 16). Furthermore, in the above embodiment and its variations, the height of the row regulating section 14D (height from the substrate 16) is higher than the height of the column regulating section 14C (height from the substrate 16). Good too. In these cases, the surfaces of each column regulating section 14C and surrounding regulating section 14E are relatively liquid repellent compared to the surface of each row regulating section 14D. For example, when forming the hole injection layer 22, the hole transport layer 23, and the light emitting layer 24 by a coating method, ink is applied to the surface of each column regulating section 14C and the surrounding regulating section 14E. It is configured to wet and spread over the surface of the portion 14E.

[Modification E]
FIG. 27 shows a modified example of the planar configuration of the light emitting panel 10 according to the above embodiment and its modified example. Note that the number of pixels 11 shown in FIG. 27 is just an example, and the actual number of pixels depends on the display area required for actual use. In the above embodiment and its modified examples, the light emitting panel 10 may have an elliptical shape, for example, as shown in FIG. 27. At this time, the shape of the substrate 16 is elliptical. In the above embodiment and its modified examples, the light emitting panel 10 can take various shapes, such as a circular shape, a trapezoidal shape, or a shape in which a part of a circle is cut out. At this time, the shape of the substrate 16 corresponds to the shape of the light emitting panel 10. Further, when the light emitting panel 10 has a shape other than a rectangle, such as an elliptical shape, a circular shape, a trapezoid shape, or a shape with a part of a circle cut out, the light emitting panel 10 may be 19. As shown in FIG. 21 or 22, it may be bent in a convex, concave, or crank shape, or, for example, as shown in FIG. 24, it may be curved in a convex shape.

Note that in the above embodiment and its modifications, an additional structure may be provided within each pixel 11.

[Modification F]
In the above embodiment and its variations, the light emitting element 11-2 may be a QLED (Quantum Dot electro-luminescence). QLED is, for example, a light emitting element 11-2 in which the light emitting layer 24 is made of an inorganic material, and the hole injection layer 22, hole transport layer 23, electron transport layer 25, and electron injection layer 26 are made of organic materials. Pointing to the element. Even in this case, the same effects as the above embodiment and its modifications can be achieved.

[Modified example G]
In the above embodiment and its modifications, the hole injection layer 22, the hole transport layer 23, the light emitting layer 24, the electron transport layer 25, and the electron injection layer 26 may be formed by vapor deposition instead of coating.

By the way, in the above embodiment and its modification, it is assumed that the user views the light emitting panel 10 diagonally from the column direction. This is because the chromaticity viewing angle of the light emitting panel 10 is larger in the column direction than in the row direction. However, in the above embodiment and its modified examples, the user may view the light emitting panel 10 diagonally from the row direction, if necessary. Compared to the short axis of the pixel, which is the extending direction of the row regulating part 14D, the pixel width can be secured in the long axis direction of the pixel in which the column regulating part 14C extends, so that the brightness viewing angle characteristics and the chromaticity viewing angle are improved. The characteristic design likelihood is high and good viewing angle characteristics can be ensured. Therefore, by rotating and using the light emitting panel 10 so that the vertical direction of the light emitting panel 10 is the column direction of the light emitting panel 10, the left and right side of the panel after the light emitting panel 10 is arranged is rotated by 90 degrees. The viewing angle can be improved.

[Modified example H]
In the above embodiment and its modified examples, the electron transport layer 25 and the electron injection layer 26 may be formed separately for each display pixel 12 and shared by each pixel 11 within the display pixel 12. In this case, the electron transport layer 25 and the electron injection layer 26 may be formed by, for example, mask vapor deposition or coating.

[Modification I]
In the above embodiment and its modification, display pixels of two different pixel sizes (display pixel 12n and display pixel 12s) are arranged at the boundary between display region 10A and non-display region 10B in display region 10A. was. However, in the above embodiment and its modified examples, display pixels of three or more different pixel sizes may be arranged at the boundary between the display area 10A and the non-display area 10B in the display area 10A.

In the above embodiment and its variations, the rows and columns may be interchanged. For example, in the above embodiment and its variations, the column regulating section 14C and the row regulating section 14D may be replaced. In this case, the row regulating section 14D corresponds to a specific example of the "first regulating section" of the present disclosure, and the column regulating section 14C corresponds to a "second regulating section", "third regulating section", and "fourth regulating section" of the present disclosure. This corresponds to a specific example of "Regulatory Department."

[Modification J]
In the above embodiment and its modified examples, wobbling, which periodically moves the display by several pixels, may be performed to prevent burn-in. For example, as shown in FIGS. 28 and 29, a portion of the display area 10A that corresponds to the outer edge is a non-light emitting area 10B, and a portion of the display area 10A that corresponds to an area other than the outer edge is a light emitting area. It may be the area 10A-1. At this time, the light emitting area 10A-1 periodically moves by several pixels in the display area 10A. The light emitting area 10A-1 may have a shape similar to the shape of the display area 10A as shown in FIG. 28, or may have a shape different from the shape of the display area 10A as shown in FIG. 29, for example. (For example, it may be circular or oval).

Further, in this modification, for example, as shown in FIG. 30, two light emitting regions 10A-1 may be provided in the display region 10A. In this case, in the display area 10A, each light emitting area 10A-1 periodically moves by several pixels in the display area 10A. At this time, the two light emitting regions 10A-1 may have mutually different shapes. For example, one light emitting region 10A-1 may be circular or elliptical, and the other light emitting region 10A-1 may be rectangular. Further, in this modification, for example, as shown in FIG. 31, three light emitting regions 10A-1 may be provided in the display region 10A. In this case, in the display area 10A, each light emitting area 10A-1 periodically moves by several pixels in the display area 10A. At this time, the three light emitting regions 10A-1 may have mutually different shapes. For example, the first light emitting area 10A-1 is circular or oval, the second light emitting area 10A-1 is rectangular, and the third light emitting area 10A-1 is circular or oval. It may be oval. Note that in FIGS. 29, 30, and 31, the circular or elliptical boundary line of the light emitting region 10A-1 is shown as a curved line for convenience, but in reality, a step of the size of a pixel 11 exists.

In this modification, the display area 10A is provided with a plurality of light emitting areas 10A-1 that periodically move by several pixels. Thereby, burn-in can be prevented.

Note that in this modification, the light emitting region 10A-1 may have a shape that corresponds to the shape of a display screen of an electronic device to which the display panel 10 is applied. In this case, wobbling may not be performed. In this way, if the shape of the light emitting region 10A-1 can be changed to a shape corresponding to the shape of the display screen of the electronic device to which the display panel 10 is applied, the shape of the display region 10A can be changed for each electronic device. There is no need to change the display panel 10, and the manufacturing cost of the display panel 10 can be reduced.

<3. Application example>
[Application example 1]
Below, application examples of the light emitting device 1 according to the above embodiment and modifications thereof will be described. The light emitting device 1 according to the above embodiment and its modification example is a mobile terminal device such as a television device, a digital camera, a notebook personal computer, a sheet-like personal computer, a mobile phone, an in-vehicle display device, an in-vehicle monitor, or the like. The present invention can be applied to display devices of electronic devices in all fields, such as video cameras, that display externally input video signals or internally generated video signals as images or videos.

FIG. 32 is a perspective view of the external appearance of the electronic device 2 according to this application example. The electronic device 2 is, for example, a sheet-like personal computer that includes a display surface 320 on the main surface of a housing 310. The electronic device 2 includes the light emitting device 1 according to the embodiment and its modification as a display device on the display surface 320 of the electronic device 2. The light emitting device 1 according to the above embodiment and its modification is arranged such that the light emitting panel 10 faces outward. In this application example, since the light emitting device 1 according to the embodiment and its modification is provided on the display surface 320, it is possible to realize an electronic device 2 with high visibility and display quality.

[Application example 2]
Below, an example of application of the light emitting element 11-2 according to the above embodiment and its modification will be described. The light emitting element 11-2 according to the above embodiment and its modifications can be applied to light sources of lighting devices in all fields, such as tabletop or floor lighting devices, or indoor lighting devices. be.

FIG. 33 shows the appearance of an indoor lighting device to which the light emitting device 1 according to the above embodiment and its modification is applied. This lighting device has, for example, a lighting section 410 that includes the light emitting device 1 according to the above embodiment and its modification. The lighting units 410 are arranged in a suitable number and at appropriate intervals on the ceiling 420 of the building. Note that the lighting section 410 can be installed not only on the ceiling 420 but also on a wall 430 or a floor (not shown) or any other location depending on the purpose.

In these lighting devices, illumination is performed using light from the light emitting device 1 according to the embodiment and its modifications. Thereby, a lighting device with high lighting quality can be realized.

Although the present disclosure has been described above with reference to the embodiments, the present disclosure is not limited to the embodiments and can be modified in various ways. Note that the effects described in this specification are merely examples. The effects of the present disclosure are not limited to the effects described herein. The present disclosure may have advantages other than those described herein.

Further, for example, the present disclosure can take the following configuration.
(1)
multiple pixels,
a plurality of first regulating portions extending in a first direction and partitioning two adjacent pixels in a second direction orthogonal to the first direction;
a plurality of second regulating portions extending in the second direction and partitioning the two pixels adjacent in the first direction;
The plurality of pixels include at least a first pixel and a second pixel that have different lengths in the first direction and share a light emitting layer,
The first pixel and the second pixel are arranged adjacent to each other in the first direction via at least the second regulating section. The light emitting panel.
(2)
The plurality of pixels are grouped as display pixels by a predetermined number,
The first pixel is included in one of the two display pixels adjacent to each other in the first direction,
The light emitting panel according to (1), wherein the second pixel is included in the other of two display pixels adjacent to each other in the first direction.
(3)
The light emitting panel according to (1) or (2), wherein the first pixel and the second pixel are arranged in a gap between two adjacent first regulating parts.
(4)
The light emitting panel according to (3), wherein the first pixel and the second pixel are arranged along the first regulating portion.
(5)
comprising a display area and a non-display area around the display area,
The first pixel and the second pixel are arranged in the display area,
The length of the second pixel in the first direction is shorter than the length of the first pixel in the first direction,
The light emitting panel according to any one of (1) to (4), wherein the second pixel is arranged at a boundary between the display area and the non-display area.
(6)
The plurality of pixels include a third pixel arranged in the non-display area,
The second pixel and the third pixel are arranged adjacent to each other in the first direction via a third regulation part of the plurality of second regulation parts,
The length of the third regulating part in the first direction is longer than the length in the first direction of a fourth regulating part other than the third regulating part among the plurality of second regulating parts. The light emitting panel according to (5).
(7)
The length of the second pixel in the first direction is shorter than the length of the first pixel in the first direction,
The plurality of pixels include a plurality of first pixels arranged in line in the first direction and a plurality of second pixels arranged in line in the first direction. (1) The light-emitting panel according to any one of (4) to (4).
(8)
The length in the first direction of the region that partitions between two of the second pixels adjacent in the first direction is the length of the area that partitions between two of the first pixels that are adjacent to each other in the first direction. The light emitting panel according to (7), wherein the length of the region in the first direction is shorter than the length in the first direction.
(9)
The light emitting panel is curved or bent,
The length of the first pixel and the second pixel in the first direction is the difference in apparent pixel size between the first pixel and the second pixel when the light emitting panel is viewed from a specific direction. is set to be smaller than a difference in actual pixel size between the first pixel and the second pixel.
(10)
comprising a display area and a non-display area around the display area,
At least the first pixel and the second pixel are arranged in the display area,
The plurality of pixels include at least a third pixel arranged in the non-display area,
(1) to (4), wherein the first pixel or the second pixel and the third pixel are arranged adjacent to each other in the first direction via at least the second regulating portion. The light-emitting panel according to any one of the above.
(11)
The light emitting panel according to any one of (1) to (10), wherein the light emitting layer is a coating film.
(12)
The light-emitting panel according to (11), wherein the first pixel and the second pixel share another layer composed of a coating film in addition to the light-emitting layer.
(13)
The light emitting panel according to (10), wherein the third pixel and the first pixel or the second pixel share the light emitting layer.
(14)
The light-emitting panel according to (13), wherein the third pixel and the first pixel or the second pixel share another layer composed of a coating film in addition to the light-emitting layer.
(15)
The light emitting panel according to any one of (1) to (14), wherein the second regulating part has relatively lyophilicity compared to the first regulating part.
(16)
The light emitting panel according to any one of (1) to (15), wherein the height of the second restriction part is lower than the height of the first restriction part.
(17)
An electronic device comprising the light emitting panel according to any one of (1) to (16).
(18)
a display area, a non-display area around the display area, a plurality of pixel formation areas provided in both the display area and the non-display area, extending in a first direction, and a plurality of first regulating portions that partition two of the pixel formation regions adjacent to each other in a second direction orthogonal to the second direction; and two of the pixel formation regions that extend in the second direction and adjacent to the first direction. a plurality of second regulating portions that partition regions, each of the plurality of pixel formation regions includes a first pixel and a second pixel having different lengths in the first direction; The second pixel is provided with a panel arranged adjacently in the first direction via the second regulating part;
By applying ink not only to the display area but also to the non-display area of the panel, ink is applied not only to each of the pixel formation areas included in the display area but also to the non-display area. A method for manufacturing a light emitting panel, comprising: forming a pixel including a light emitting layer in each of the pixel forming regions.
(19)
Applying the ink to an unformed area of the pixel formation area in the non-display area, a plurality of the pixel formation areas in the non-display area, and a plurality of the pixel formation areas in the display area. According to (18), the pixel including the light emitting layer is formed not only in each of the pixel formation regions included in the display area but also in each of the pixel formation areas included in the non-display area. A method of manufacturing the light-emitting panel described.
(20)
The method for manufacturing a light emitting panel according to (18) or (19), wherein the second regulating part has more lyophilicity to the ink than the first regulating part.
(21)
The method for manufacturing a light emitting panel according to any one of (18) to (20), wherein the height of the second regulating part is lower than the height of the first regulating part.
(22)
The light emitting panel according to (12), wherein the second regulating section is configured such that ink spreads over the surface of the second regulating section when forming the light emitting layer by a coating method.

DESCRIPTION OF SYMBOLS 1...Light-emitting device, 2...Electronic device, 10...Light-emitting panel, 10A...Display area, 10B...Non-display area, 10C...High definition area, 10D...Vertical area, 10E...Slanted area, 10F...Upper area, 10G...Middle area Region, 10H... Lower region, 11, 11R, 11G, 11B... Pixel, 11x... First pixel, 11y... Second pixel, 11z... Third pixel, 11-1... Pixel circuit, 12-2... Light emitting element, 14 ... Insulating layer, 14A... Opening, 14C... Column regulating section, 14D... Row regulating section, 14E... Surrounding regulating section, 16... Substrate, 16A... Base material, 16B... Wiring layer, 17... Groove, 20... Controller, 21 ... Anode, 22... Hole injection layer, 23... Hole transport layer, 24... Light emitting layer, 24A... Light emitting region, 25... Electron transport layer, 26... Electron injection layer, 27... Cathode, 28... Sealing layer, 29 ...Circular polarizing plate, 30...Driver, 31...Horizontal selector, 32...Light scanner, 100...Moving object, 110...Vehicle body, 120...Windshield, 130...Dashboard, 200...Driver, 310...Housing, 320... Display surface, 410...Lighting section, 420...Ceiling, 430...Wall, Tr1...Drive transistor, Tr2...Selection transistor, Cs...Storage capacitor, DSL...Power line, DTL...Signal line, L1, L2, L3, L4, L5 , L6, L7... length, Vgs... gate-source voltage, Vsig... signal voltage, WSL... selection line.

Claims (21)

comprising a display area and a non-display area around the display area,
multiple pixels,
a plurality of first regulating portions extending in a first direction and partitioning two adjacent pixels in a second direction orthogonal to the first direction;
a plurality of second regulating portions extending in the second direction and partitioning the two pixels adjacent in the first direction;
The plurality of pixels include at least a first pixel and a second pixel that have different lengths in the first direction and share a light emitting layer made of a coating film,
The first pixel and the second pixel are arranged adjacent to each other in the first direction via at least the second restriction part,
the first pixel and the second pixel are arranged in the display area,
The second pixel is arranged at a boundary between the display area and the non-display area,
The plurality of pixels include a third pixel arranged in the non-display area,
The second pixel and the third pixel are arranged adjacent to each other in the first direction via a third regulation part of the plurality of second regulation parts,
The length of the second pixel in the first direction is shorter than the length of the first pixel in the first direction,
The length of the third regulating part in the first direction is longer than the length in the first direction of a fourth regulating part other than the third regulating part among the plurality of second regulating parts. A luminous panel. The plurality of pixels are grouped as display pixels by a predetermined number,
The first pixel is included in one of the two display pixels adjacent to each other in the first direction,
The light emitting panel according to claim 1, wherein the second pixel is included in the other of two display pixels adjacent to each other in the first direction. The first pixel and the second pixel are arranged in a gap between two adjacent first regulating parts,
The light emitting panel according to claim 1 or 2, wherein the first pixel and the second pixel are arranged along the first regulating section. multiple pixels,
a plurality of first regulating portions extending in a first direction and partitioning two adjacent pixels in a second direction orthogonal to the first direction;
a plurality of second regulating portions extending in the second direction and partitioning the two pixels adjacent in the first direction;
The plurality of pixels include at least a first pixel and a second pixel that have different lengths in the first direction and share a light emitting layer made of a coating film,
The first pixel and the second pixel are arranged adjacent to each other in the first direction via at least the second restriction part,
The length of the second pixel in the first direction is shorter than the length of the first pixel in the first direction,
The plurality of pixels include a plurality of first pixels arranged in line in the first direction and a plurality of second pixels arranged in line in the first direction,
The length in the first direction of the region that partitions between two of the second pixels adjacent in the first direction is the length of the area that partitions between two of the first pixels that are adjacent to each other in the first direction. The light-emitting panel is shorter than the length of the region in the first direction. The plurality of pixels are grouped as display pixels by a predetermined number,
The first pixel is included in one of the two display pixels adjacent to each other in the first direction,
The light emitting panel according to claim 4, wherein the second pixel is included in the other of two display pixels adjacent to each other in the first direction. The first pixel and the second pixel are arranged in a gap between two adjacent first regulating parts,
The light emitting panel according to claim 4 or 5, wherein the first pixel and the second pixel are arranged along the first regulating section. A light emitting panel,
multiple pixels,
a plurality of first regulating portions extending in a first direction and partitioning two adjacent pixels in a second direction orthogonal to the first direction;
a plurality of second regulating portions extending in the second direction and partitioning the two pixels adjacent in the first direction;
The plurality of pixels include at least a first pixel and a second pixel that have different lengths in the first direction and share a light emitting layer made of a coating film,
The first pixel and the second pixel are arranged adjacent to each other in the first direction via at least the second restriction part,
The light emitting panel is curved or bent,
The length of the first pixel and the second pixel in the first direction is the difference in apparent pixel size between the first pixel and the second pixel when the light emitting panel is viewed from a specific direction. is set to be smaller than a difference in actual pixel size between the first pixel and the second pixel. The light emitting panel according to claim 7, wherein the first pixel and the second pixel share another layer composed of a coating film in addition to the light emitting layer. The light emitting panel according to any one of claims 1 to 8, wherein the second regulating part has relatively lyophilicity compared to the first regulating part. The light emitting panel according to any one of claims 1 to 9, wherein the height of the second restriction part is lower than the height of the first restriction part. An electronic device comprising the light emitting panel according to any one of claims 1 to 10. a display area, a non-display area around the display area, a plurality of pixel formation areas provided in both the display area and the non-display area, extending in a first direction, and a plurality of first regulating portions that partition two of the pixel formation regions adjacent to each other in a second direction orthogonal to the second direction; and two of the pixel formation regions that extend in the second direction and adjacent to the first direction. a plurality of second regulating portions that partition regions, the plurality of pixel formation regions include a first pixel and a second pixel having different lengths in the first direction, the first pixel and the second pixel having different lengths in the first direction; The second pixel is arranged adjacent to each other in the first direction via the second regulating part, the first pixel and the second pixel are arranged in the display area, and the second pixel is arranged in the display area. , arranged at the boundary between the display area and the non-display area, the plurality of pixel formation areas include a third pixel arranged in the non-display area, and the second pixel and the third pixel are , are arranged adjacent to each other in the first direction via a third regulating section among the plurality of second regulating sections, and the length of the second pixel in the first direction is equal to the length of the second pixel in the first direction. The length of the pixel in the first direction is shorter than the length of the third regulating part in the first direction, and the length of the third regulating part in the first direction is smaller than the length of the third regulating part other than the third regulating part among the plurality of second regulating parts. preparing a panel that is longer than the length of the fourth regulating portion in the first direction;
By applying ink not only to the display area but also to the non-display area of the panel, ink is applied not only to each of the pixel formation areas included in the display area but also to the non-display area. A method for manufacturing a light emitting panel, comprising: forming a pixel including a light emitting layer in each of the pixel forming regions. Applying the ink to an unformed area of the pixel formation area in the non-display area, a plurality of the pixel formation areas in the non-display area, and a plurality of the pixel formation areas in the display area. According to claim 12, the method includes forming pixels including the light emitting layer not only in each of the pixel formation regions included in the display area but also in each of the pixel formation areas included in the non-display area. A method of manufacturing the light-emitting panel described. The method for manufacturing a light emitting panel according to claim 12 or 13, wherein the second regulating part has more lyophilicity to the ink than the first regulating part. The method for manufacturing a light emitting panel according to any one of claims 12 to 14, wherein the height of the second restriction part is lower than the height of the first restriction part. a display area, a non-display area around the display area, a plurality of pixel formation areas provided in both the display area and the non-display area, extending in a first direction, and a plurality of first regulating portions that partition two of the pixel formation regions adjacent to each other in a second direction orthogonal to the second direction; and two of the pixel formation regions that extend in the second direction and adjacent to the first direction. a plurality of second regulating portions that partition regions, the plurality of pixel formation regions include a first pixel and a second pixel having different lengths in the first direction, the first pixel and the second pixel having different lengths in the first direction; The second pixel is arranged adjacent to the first direction via the second restriction part, and the length of the second pixel in the first direction is equal to the length of the first pixel. The length is shorter than the length in the first direction, and the plurality of pixel formation regions include a plurality of first pixels arranged in line in the first direction and a plurality of first pixels arranged in line in the first direction. The length in the first direction of a region that includes a plurality of second pixels and partitions between two second pixels adjacent in the first direction is equal to the length in the first direction. preparing a panel that is shorter than the length in the first direction of a region partitioning between two of the first pixels adjacent to;
By applying ink not only to the display area but also to the non-display area of the panel, ink is applied not only to each of the pixel formation areas included in the display area but also to the non-display area. A method for manufacturing a light emitting panel, comprising: forming a pixel including a light emitting layer in each of the pixel forming regions. Applying the ink to an unformed area of the pixel formation area in the non-display area, a plurality of the pixel formation areas in the non-display area, and a plurality of the pixel formation areas in the display area. According to claim 16, the pixel including the light emitting layer is formed not only in each of the pixel formation regions included in the display area but also in each of the pixel formation areas included in the non-display area. A method of manufacturing the light-emitting panel described. The method for manufacturing a light emitting panel according to claim 16 or 17, wherein the height of the second regulating portion is lower than the height of the first regulating portion. A method for manufacturing a light emitting panel, the method comprising:
a display area, a non-display area around the display area, a plurality of pixel formation areas provided in both the display area and the non-display area, extending in a first direction, and a plurality of first regulating portions that partition two of the pixel formation regions adjacent to each other in a second direction orthogonal to the second direction; and two of the pixel formation regions that extend in the second direction and adjacent to the first direction. a plurality of second regulating portions that partition regions, the plurality of pixel formation regions include a first pixel and a second pixel having different lengths in the first direction, the first pixel and the second pixel having different lengths in the first direction; The second pixel is a curved or bent panel that is arranged adjacent to the first direction via the second restriction part, and the second pixel is a curved or bent panel, and The length in the first direction is such that the difference in apparent pixel size between the first pixel and the second pixel when the light emitting panel is viewed from a specific direction is determined by the length of the first pixel and the second pixel. Prepare a panel that is set to be smaller than the actual pixel size difference,
By applying ink not only to the display area but also to the non-display area of the panel, ink is applied not only to each of the pixel formation areas included in the display area but also to the non-display area. A method for manufacturing a light emitting panel, comprising: forming a pixel including a light emitting layer in each of the pixel forming regions. Applying the ink to an unformed area of the pixel formation area in the non-display area, a plurality of the pixel formation areas in the non-display area, and a plurality of the pixel formation areas in the display area. According to claim 19, the method includes forming pixels including the light emitting layer not only in each of the pixel formation regions included in the display area but also in each of the pixel formation areas included in the non-display area. A method of manufacturing the light-emitting panel described. The method for manufacturing a light emitting panel according to claim 19 or 20 , wherein the height of the second regulating part is lower than the height of the first regulating part.

Images