Patent Publication Number: US-2023165034-A1

Title: Display device

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application claims the benefit of priority to Japanese Patent Application No. 2021-191564, filed on Nov. 25, 2021, the entire contents of which are incorporated herein by reference. 
     FIELD 
     An embodiment of the present invention relates to a display device and a method for manufacturing the same. 
     BACKGROUND 
     Conventionally, an organic EL display device (Organic Electroluminescence Display) using an organic electroluminescent material (organic EL material) as a light-emitting element (organic EL element) of a display unit has been known as a display device. In recent years, there has been an increasing demand for higher definition in an organic EL display device. 
     As the definition of the EL display device is increased, adjacent pixels become closer together, and therefore, an effect of a leakage current flowing between adjacent pixels (hereinafter, also referred to as “leakage current in the transverse direction”) is actualized. In the EL display device, the leakage current in the transverse direction may cause the adjacent pixels to emit light, thereby deteriorating the quality of the EL display device. For example, see Japanese laid-open patent publication No. 2011-009169. 
     SUMMARY 
     A display device according to an embodiment of the present invention includes a first pixel electrode, a second pixel electrode arranged separately from the first pixel electrode in a first direction, an insulating layer covering the first pixel electrode and the second pixel electrode, the insulating layer including a first opening part and a second opening part, the first opening part exposing at least a part of an upper surface of the first pixel electrode, and the second opening part exposing at least a part of an upper surface of the second pixel electrode, a first common layer arranged above the first pixel electrode, the second pixel electrode and the insulating layer, a first light-emitting layer arranged above the first common layer, and the first light-emitting layer arranged at a position overlapping the first pixel electrode, a second light-emitting layer arranged above the first common layer, and the first light-emitting layer arranged at a position overlapping the second pixel electrode; an opposite electrode arranged above the first light-emitting layer and the second light-emitting layer, a carrier absorption layer arranged above the insulating layer, the carrier absorption layer being arranged between the first common layer and the second light-emitting layer, and a light emission start voltage of the second light-emitting layer is lower than a light emission start voltage of the first light-emitting layer. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG.  1    is a schematic diagram when a display device according to an embodiment of the present invention is in a plan view. 
         FIG.  2    is an enlarged view of a pixel layout when a display device is in a plan view. 
         FIG.  3    is a cross-sectional view when a display device shown in  FIG.  2    is cut along a line A 1 -A 2 . 
         FIG.  4    is a partially enlarged view of the cross-sectional view shown in  FIG.  3   . 
         FIG.  5    is a partially enlarged view of the cross-sectional view shown in  FIG.  3    for a modification of a carrier absorption layer according to an embodiment of the present invention. 
         FIG.  6    is a cross-sectional view illustrating a method for manufacturing a display device according to an embodiment of the present invention. 
         FIG.  7    is a cross-sectional view illustrating a method for manufacturing a display device according to an embodiment of the present invention. 
         FIG.  8    is a cross-sectional view illustrating a method for manufacturing a display device according to an embodiment of the present invention. 
         FIG.  9    is a pixel layout diagram when a display device according to an embodiment of the present invention is in a plan view. 
         FIG.  10    is a cross-sectional view when a display device shown in  FIG.  9    is cut along a line A 1 -A 2 . 
         FIG.  11    is an enlarged view of a pixel layout when a display device is in a plan view. 
         FIG.  12    is an enlarged view of a pixel layout when a display device is in a plan view. 
         FIG.  13    is an enlarged view of a pixel layout when a display device is in a plan view. 
         FIG.  14    is an enlarged view of a pixel layout when a display device is in a plan view. 
         FIG.  15    is an enlarged view of a pixel layout when a display device is in a plan view. 
         FIG.  16    is a cross-sectional view when a display device shown in  FIG.  15    is cut along a line A 1 -A 2 . 
         FIG.  17    is an enlarged view of a pixel layout when a conventional display area is in a plan view. 
         FIG.  18    is a cross-sectional view when a display area shown in  FIG.  17    is cut along a line F 1 -F 2 . 
         FIG.  19    is a partially enlarged view of the cross-sectional view shown in  FIG.  18   . 
         FIG.  20    is a cross-sectional view when a display area shown in  FIG.  17    is cut along a line F 1 -F 2 . 
         FIG.  21    is a partially enlarged view of the cross-sectional view shown in  FIG.  20   . 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     The present invention provides a display device in which a leakage current in a transverse direction in a light-emitting element is suppressed. 
     Hereinafter, embodiments of the present invention will be described with reference to the drawings and the like. However, the present invention can be implemented in various aspects without departing from the gist thereof and is not to be construed as being limited to the description of the embodiments exemplified below. In addition, in order to make the description clearer with respect to the drawings, the width, thickness, shape, and the like of each part may be schematically represented in comparison with actual embodiments, but the schematic drawings are merely examples, and do not limit the interpretation of the present invention. Further, in this specification and the drawings, the same or similar elements as those described with respect to the above-described drawings are denoted by the same symbols, and a redundant description may be omitted. 
     In the present invention, when a single film is processed to form a plurality of films, the plurality of films may have different functions and roles. However, the plurality of films derives from films formed as the same layer in the same process, and they have the same layer structure and the same material. Therefore, the plurality of films is defined as existing in the same layer. 
     Also, in this specification, expressions such as “upper” and “lower” in describing the drawings represent relative positional relationships between a structure of interest and other structures. In this specification, in a side view, the direction from an insulating surface to a light-emitting element, which will be described later, is defined as “upper”, and a reverse direction thereof is defined as “lower”. In this specification and the claims, the expression “on” in describing the manner of arranging another structure on a certain structure shall include both arranging another structure directly above a certain structure and arranging another structure above a certain structure via yet another structure, unless otherwise specified. 
     A display device according to an embodiment of the present invention will be described with reference to  FIG.  1    to  FIG.  16   .  FIG.  1    is a schematic diagram showing a configuration of a display device  100  according to an embodiment of the present invention and shows a schematic configuration when the display device  100  is in a plan view. In this specification, a state in which the display device  100  is viewed perpendicularly to a screen (display area) is referred to as a “plan view.” 
     As shown in  FIG.  1   , the display device  100  includes a display area  102  formed in an insulating surface, a scan line drive circuit  104 , a driver IC  106 , and a terminal part in which a plurality of terminals  107  is arranged. A light-emitting element having an organic layer composed of an organic material is arranged in the display area  102 . In addition, a peripheral area  103  surrounds the display area  102 . The driver IC  106  functions as a control unit that transmits a signal to the scan line drive circuit  104  and a data line drive circuit. The data line drive circuit may be arranged with a sampling switch or the like on a substrate  101  separately from the driver IC  106 . In addition, although the driver IC  106  is arranged above a flexible printed circuit (Flexible Print Circuit: FPC)  108 , the driver IC  106  may be arranged above the substrate  101 ). The flexible printed circuit  108  is connected to the plurality of terminals  107  arranged in the peripheral area  103 . 
     In this case, the insulating surface is a surface of the substrate  101 . The substrate  101  supports each layer, such as the insulating layer and the conductive layer, arranged above its surface. Also, the substrate  101  may be made of an insulating material, may have an insulating surface, or an insulating film may be separately formed on the substrate  101  to form an insulating surface. The material of the substrate  101  and the material for forming the insulating film are not particularly limited as long as the insulating surface can be obtained. 
     In the display area  102  shown in  FIG.  1   , a plurality of pixels  105  is arranged in a matrix in an X-direction and Y-direction. In this specification and the like, a pixel refers to the smallest unit that enables the desired color to be displayed in the display area  102 . Each pixel  105  has a pixel circuit and a light-emitting element electrically connected to the pixel circuit. The light-emitting element includes a pixel electrode, an organic layer (light-emitting part) including a light-emitting layer stacked on the pixel electrode, and a counter electrode. The light-emitting elements included in the pixel  105  emit different colors from each other. For example, the pixel  105  emits a color of either a red light-emitting element, a green light-emitting element, or a blue light-emitting element. Also, the color emitted by the light-emitting element is not limited to the above three colors and may be at least one color. In this specification and the like, the component included in the red light-emitting element is indicated by R, the component included in the green light-emitting element is indicated by G, and the component included in the blue light-emitting element is indicated by B. In addition, an emission peak wavelength of the blue light-emitting element is 460 nm or more and 500 nm or less. An emission peak wavelength of the red light-emitting element is 610 nm or more and 780 nm or less. An emission peak wavelength of the green light-emitting element is 500 nm or more and 570 nm or less. 
     Each pixel  105  is electrically connected to a scan line  111  and a data line  113 . Although not shown, the pixel  105  is electrically connected to a power supply line. The scan line  111  extends along the X-direction and is electrically connected to the scan line drive circuit  104 . The data line  113  extends along the Y-direction and is electrically connected to the driver IC  106 . In addition, the driver IC  106  outputs a scan signal to the scan line  111  via the scan line drive circuit  104 . The driver IC  106  outputs a data signal corresponding to image data to the data line  113 . Inputting the scan signal and the data signal to the pixel circuit included in each pixel  105  makes it possible to perform a screen display corresponding to the image data. The pixel circuit is composed of a plurality of transistors. Typically, a thin film transistor (TFT) can be used as the transistor. However, the present invention is not limited to the thin film transistor, and any element having a current control function may be used. 
       FIG.  2    is an enlarged view of a pixel layout when the display device  100  is in a plan view, and  FIG.  3    is a cross-sectional view when the pixel layout shown in  FIG.  2    is cut along a line A 1 -A 2 .  FIG.  4    is a partially enlarged view of the cross-sectional view shown in  FIG.  3   . In the present embodiment, a configuration of a top-emission display device will be described. 
       FIG.  2    shows an area where pixels  105 R,  105 G, and  105 B are arranged. 
     The pixel  105 R, the pixel  105 G, and the pixel  105 B are arranged side by side in the X-direction. In addition, the pixel  105 R and the pixel  105 R, the pixel  105 G and the pixel  105 G, and the pixel  105 B and the pixel  105 B are arranged side by side in the Y-direction. In  FIG.  2   , an area indicated by a solid line is an area where light-emitting layers  132 R,  132 G, and  132 B are arranged. In addition, an area surrounded by a dotted line is an area where openings  120 R,  120 G, and  120 B are arranged in the insulating layer. The insulating layer is also referred to as a barrier or bank. The openings  120 R,  120 G, and  120 B arranged in the insulating layer correspond to a light-emitting area when light-emitting elements  130 R,  130 G, and  130 B actually emit light. Also, if each of the light-emitting elements  130 R,  130 G, and  130 B is not distinguished, they will be collectively described as the light-emitting element  130 . In addition, the same applies to each component of the light-emitting elements  130 R,  130 G, and  130 B. 
       FIG.  3    shows a cross-sectional view of the pixels  105 R,  105 G, and  105 B. 
     A plurality of transistors  110  is arranged above the substrate  101  via an insulating film  112 . The plurality of transistors  110  constitutes the pixel circuit. The transistor  110  is composed of at least a semiconductor layer  114 , a gate insulating film  115 , and a gate electrode  116 . An interlayer insulating film  121  is arranged above the transistor  110 . A source electrode or drain electrode  117  or  118  is arranged above the interlayer insulating film  121 . Each of the source electrode or drain electrode  117  or  118  is connected to the semiconductor layer  114  via a contact hole arranged in the interlayer insulating film  121 . An insulating film  122  is arranged above the interlayer insulating film  121 . The insulating film  122  can relieve any unevenness caused by the transistor  110  and the source electrode or drain electrode  117  or  118 . The plurality of transistors  110  arranged above the substrate  101 , and the interlayer insulating film  121  and the insulating film  122  arranged above the transistor  110  are formed by known materials and methods. Also, the configuration of the pixel circuit arranged below the insulating film  122  is omitted after  FIG.  4   . 
     The light-emitting element  130 R is arranged in the pixel  105 R, the light-emitting element  130 G is arranged in the pixel  105 G, and the light-emitting element  130 B is arranged in the pixel  105 B on the insulating film  122 . The light-emitting element  130 R has at least a pixel electrode  124 R, the light-emitting layer  132 R, and a counter electrode  138 . The light-emitting element  130 G has at least a pixel electrode  124 G, the light-emitting layer  132 G, and the counter electrode  138 . The light-emitting element  130 B has at least a pixel electrode  124 B, the light-emitting layer  132 B, and the counter electrode  138 . A common layer  128  is arranged between the pixel electrodes  124 R,  124 G, and  124 B and the light-emitting layers  132 R,  132 G, and  132 B. A common layer  136  is arranged between the light-emitting layers  132 R,  132 G, and  132 B and the counter electrode  138 . The common layers  128  and  136  are arranged in common over the light-emitting elements  130 R,  130 G, and  130 B. In  FIG.  3   , the pixel electrodes  124 R,  124 G, and  124 B are anodes and the counter electrode  138  is a cathode. The common layer  128  includes at least one of a hole transport layer and a hole injection layer, and the common layer  136  includes at least one of an electron transport layers and an electron injection layer. Although not shown in  FIG.  3   , each of the pixel electrodes  124 R,  124 G, and  124 B is electrically connected to the transistor  110  included in the pixel circuit. 
     In the present embodiment, when the display device  100  is viewed in cross-section, a first end portion of the light-emitting layer  132 B overlaps the light-emitting layer  132 G. In addition, a second end portion of the light-emitting layer  132 B overlaps the light-emitting layer  132 R. In this case, a carrier absorption layer  134  is arranged at a position where the first end portion of the light-emitting layer  132 B overlaps the light-emitting layer  132 G and/or a position adjacent to the position where the first end portion of the light-emitting layer  132 B overlaps the light-emitting layer  132 G. In addition, the carrier absorption layer  134  is also arranged at a position where the second end portion of the light-emitting layer  132 B overlaps the light-emitting layer  132 R and/or the position adjacent to the position where the second end portion of the light-emitting layer  132 B overlaps the light-emitting layer  132 G. Also, the first end portion of the light-emitting layer  132 B is preferably arranged so as to be close to the opening  120 R of the light-emitting element  130 G. In addition, the second end portion of the light-emitting layer  132 B is preferably arranged so as to be close to the opening  120 G of the light-emitting element  130 G. Also, “an end portion of a light-emitting layer” in this specification and the like means an outer edge of the light-emitting layer when the display device  100  is in a plan view. In this specification and the like, the display device  100  is cut along a plane or a curved surface that intersects the insulating surface, and a state in which the cut surface is viewed from direction parallel to the screen is referred to as a “cross-sectional view.” 
     As the definition of the EL display device increases, the pixel becomes closer to the pixel, and therefore, an effect of a leakage current in the transverse direction flowing between adjacent pixels increases. In the EL display device, the leakage current in the transverse direction may cause the light-emitting layer of the adjacent pixels to emit light, thereby deteriorating the quality of the EL display device. 
     Hereinafter, a mechanism of the leakage current in the transverse direction in the EL display device causing the light-emitting layer to emit light in an unintended area in adjacent pixels will be described with reference to  FIG.  17    to  FIG.  21   . Also, configurations of pixel circuits arranged below an insulating film  222  are omitted in  FIG.  17    to  FIG.  21   . 
       FIG.  17    is an enlarged view of a pixel layout when a conventional display device  200  is in a plan view, and  FIG.  18    is a cross-sectional view when the display device  200  shown in  FIG.  17    is cut along a line F 1 -F 2 . In addition,  FIG.  19    is a partially enlarged view of the cross-sectional view shown in  FIG.  18   . 
       FIG.  17    shows an area where pixels  205 R,  205 G, and  205 B are arranged. The pixel  205 R, the pixel  205 G, and the pixel  205 B are arranged side by side in the X-direction. In addition, the pixel  205 R and the pixel  205 R, the pixel  205 G and the pixel  205 G, and the pixel  205 B and the pixel  205 B are arranged side by side in the Y-direction. In  FIG.  17   , an area indicated by a solid line is an area where light-emitting layers  232 R,  232 G, and  232 B are arranged. In addition, an area surrounded by a dotted line is an area where openings  220 R,  220 G, and  220 B of the insulating layer are arranged. The openings  220 R,  220 G, and  220 B arranged in the insulating layer correspond to an emission area when light-emitting elements  230 R,  230 G, and  230 B actually emit light. Also, if each of the light-emitting elements  230 R,  230 G, and  230 B is not distinguished, they will be collectively described as the light-emitting element  230 . In addition, the same applies to each component of the light-emitting elements  230 R,  230 G, and  230 B. 
     As shown in  FIG.  17   , the light-emitting layer  232 G and the light-emitting layer  232 B partially overlap at a border area between the adjacent pixel  205 G and pixel  205 B. In addition, the light-emitting layer  232 B and the light-emitting layer  232 R partially overlap at a border area between the adjacent pixel  205 B and pixel  205 R. 
       FIG.  18    shows a cross-sectional view of the pixel  205 R,  205 G, and  205 B. The light-emitting element  230 R is arranged in the pixel  205 R, the light-emitting element  230 G is arranged in the pixel  205 G, and the light-emitting element  230 B is arranged in the pixel  205 B on the insulating film  222 . The light-emitting element  230 R has at least a pixel electrode  224 R, the light-emitting layer  232 R, and the counter electrode  238 . The light-emitting element  230 G has at least a pixel electrode  224 G, the light-emitting layer  232 G, and the counter electrode  238 . The light-emitting element  230 B has at least a pixel electrode  224 B, the light-emitting layer  232 B, and the counter electrode  238 . A common layer  228  is arranged between the pixel electrodes  224 R,  224 G, and  224 B and the light-emitting layers  232 R,  232 G, and  232 B. A common layer  236  is arranged between the light-emitting layers  232 R,  232 G, and  232 B and the counter electrode  238 . The common layers  228  and  236  are arranged in common over the light-emitting elements  230 R,  230 G, and  230 B (over the display area). In  FIG.  17    to  FIG.  19   , the pixel electrodes  224 R,  224 G, and  224 B are anodes and the counter electrode  238  is a cathode. Therefore, the common layer  228  includes at least one of the hole transport layer and the hole injection layer, and the common layer  236  includes at least one of the electron transport layer and the electron injection layer. 
     In order to suppress unintended light emission in adjacent pixels, areas arranged with the light-emitting layer are preferred to be separated from each other so as not to overlap. However, in order for the areas arranged with the light-emitting layer to be separatory formed so as not to overlap each other, the openings  220 R,  220 G, and  220 B need to be formed sufficiently separate from each other, and the definition deteriorates. 
     Therefore, as the definition of the display area is increased, the areas where the light-emitting layer is arranged may overlap. As shown in  FIG.  17    to  FIG.  19   , a part of the light-emitting layer  232 G and a part of the light-emitting layer  232 B may overlap in the area where the pixel  205 G and the pixel  205 B are adjacent to each other. 
       FIG.  19    shows an enlarged view of an area  250 A where the pixel  205 G and the pixel  205 B are adjacent to each other. The light-emitting layer  232 B and the light-emitting layer  232 G are arranged above the common layer  228  on an insulating layer  226 . A part of the light-emitting layer  232 B overlaps a part of the light-emitting layer  232 G. Generally, a light emission start voltage of the light-emitting layer  232 B is higher than light emission start voltages of a light-emitting layer  228 R and the light-emitting layer  232 G. Therefore, when the light-emitting element  230 B is caused to emit light, a high voltage is applied to the light-emitting layer  232 B, so that the holes in the common layer  228  move in the transverse direction from the pixel  205 B to the pixel  205 R and the pixel  205 G. If the light-emitting layer  232 B exhibits a hole-transport property, the holes pass through the light-emitting layer  232 B in the thickness direction. Therefore, the light-emitting layer  232 G emits light at an end portion of the light-emitting layer  232 G. Alternatively, if the light-emitting layer  232 B exhibits an electron-transport property, the holes do not pass through the light-emitting layer  232 B in the thickness direction but move in the transverse direction. Therefore, the light-emitting layer  232 G emits light in the vicinity of the end portion of the light-emitting layer  232 B. In this specification and the like, a position where unintended light emission occurs in the light-emitting layer  232 R or the light-emitting layer  232 G adjacent to the light-emitting layer  232 B is referred to as a starting point of light emission. Also, the light emission start voltage of the light-emitting layer  232 R and the light emission start voltage of the light-emitting layer  232 G are approximately the same. Therefore, even if the light-emitting element  230 G is caused to emit light, the holes in the common layer  228  are prevented from moving in the transverse direction from the pixel  205 G to the pixel  205 R and the pixel  205 B. Therefore, an end portion of the light-emitting layer  232 R and the light-emitting layer  232 G do not emit light in the area where the end portion of the light-emitting layer  232 R overlaps the end portion of the light-emitting layer  232 G. 
     As shown in  FIG.  20   , in the area where the pixel  205 G and the pixel  205 B are adjacent to each other, a part of the light-emitting layer  232 G and a part of the light-emitting layer  232 B may be separated. 
       FIG.  21    shows an enlarged view of an area  250 B where the pixel  205 G and the pixel  205 B are adjacent to each other. The light-emitting layer  232 B and the light-emitting layer  232 G are arranged above the common layer  228  on the insulating layer  226 . The end portion of the light-emitting layer  232 B is separated from the end portion of the light-emitting layer  232 G. The light emission start voltage of the light-emitting layer  232 B is higher than the light emission start voltages of the light-emitting layer  232 G and the light-emitting layer  232 R. Therefore, when the light-emitting element  230 B is caused to emit light, a high voltage is applied to the light-emitting layer  232 B, so that the holes in the common layer  228  move in the transverse direction from the pixel  205 B to the pixel  205 G and the pixel  205 R. If the light-emitting layer  232 B exhibits an electron-transport property, the holes do not pass through the thickness direction of the light-emitting layer  232 B but move in the transverse direction. Therefore, the light-emitting layer  232 G emits light even if the end portion of the light-emitting layer  232 G is separated from the end portion of the light-emitting layer  232 B. 
     As described above, since the light emission start voltages of the light-emitting layers  232 R,  232 G, and  232 B are different from each other, even if the light-emitting layer  232 B overlaps or does not overlap the adjacent light-emitting layers  232 R and  232 G, a leakage current in the transverse direction occurs, and the light-emitting layer emits light in an unintended area. In order to suppress unintended light emission in each light-emitting layer, it is conceivable to prevent the leakage current in the transverse direction by designing the light emission start voltages of the light-emitting layers  232 R,  232 G, and  232 B to coincide with each other. However, it is a trade-off with the property of the light-emitting element due to the need for designs such as suppressing the property of the light-emitting element and carrier injections into the light-emitting layer. As described above, conventionally, it has been difficult to prevent unintended light emission caused by the leakage current in the transverse direction while improving the property of the light-emitting element. 
     As described in  FIG.  17    to  FIG.  21   , the starting point of light emission differs depending on the order in which the common layer  228  and the light-emitting layers  232 R,  232 G, and  232 B are stacked. In addition, the strength of the leakage current in the transverse direction depends on a distance from the light-emitting area of the light-emitting element  230 B. Therefore, when the distance between the light-emitting area of the light-emitting element  230 B and the end portion of the light-emitting layer  232 B is designed to be small by increasing the definition, the strength of the leakage current increases. Therefore, the intensity of the unintended light emission in the light-emitting layer  232 R and the light-emitting layer  232 G arranged so as to overlap or be separated from the end portion of the light-emitting layer  232 B also increases. 
     Therefore, in the display device  100  according to an embodiment of the present invention, arranging the carrier absorption layer  134  at a position where the end portions of the light-emitting layers  132 R and  132 G of the light-emitting elements  130 R and  130 G having a low light emission start voltage overlap the end portion of the light-emitting layer  132 B of the light-emitting elements  130 B having a higher light emission start voltage than the light-emitting elements  130 R and  130 G, and/or a position adjacent to a position where the end portion of the light-emitting layers  132 R and  132 G overlap the end portion of the light-emitting layer  132 B, that is, at the end portion of the light-emitting layer  132 B where unintended light emission is likely to occur suppresses light emission at the end portions of the light-emitting layers  132 R and  132 G. In this specification, a “carrier absorption layer” is a structure having a function of suppressing the transfer of carriers from a light-emitting layer having a high light emission start voltage to an overlapped light-emitting layer having a low light emission start voltage by absorbing carriers injected from the pixel electrode. In the present embodiment, an example in which the pixel electrode functions as an anode will be described. Therefore, in the present embodiment, the carrier absorption layer is a structure having a function of suppressing the transfer of holes by absorbing holes. Therefore, the carrier absorption layer  134  is composed of an electron transport material. As shown in  FIG.  3   , a plurality of light-emitting layers  132 B is arranged in the Y-direction intersecting the X-direction, and the carrier absorption layer  134  is arranged contiguously at the end portion of the plurality of light-emitting layers  132 B along the Y-direction. 
     In the present embodiment, although the case where the light emission start voltage of the light-emitting element  130 B is higher than the light emission start voltages of the light-emitting elements  130 R and  130 G is exemplified, even when the light emission start voltage of the light-emitting element  130 R is higher than the light emission start voltages of the light-emitting elements  130 G and  130 B or the light emission start voltage of the light-emitting element  130 G is higher than the light emission start voltages of the light-emitting elements  130 R and  130 B, the effect according to the present embodiment can be obtained by arranging the carrier absorption layer  134  at the end portion of the light-emitting layer of the light-emitting element having a high light emission start voltage. 
       FIG.  4    is a partially enlarged view of the cross-sectional view shown in  FIG.  3   .  FIG.  4    shows an enlarged view of a border area between the light-emitting element  130 B and the light-emitting element  130 G. As shown in  FIG.  4   , the carrier absorption layer  134  is arranged at the position where an end portion  132 B- 1  of the light-emitting layer  132 B overlaps an end portion  132 G- 1  of the light-emitting layer  132 G. Specifically, the carrier absorption layer  134  includes a first portion  134 - 1  arranged between the common layer  128  and the light-emitting layer  132 G, or a second portion  134 - 2  arranged between the light-emitting layer  132 B and the light-emitting layer  132 G. In the carrier absorption layer  134 , the first portion  134 - 1  and the second portion  134 - 2  have a contiguous shape. In a cross-sectional view, since the carrier absorption layer  134  is also arranged in a side surface of the end portion of the light-emitting layer  132 B, the carrier absorption layer  134  may be defined as having a third part connecting the first portion  134 - 1  and the second portion  134 - 2 . 
     In addition, the first portion  134 - 1  of the carrier absorption layer  134  may be arranged so as to be close to a light-emitting area (the opening  120 G) of the light-emitting element  130 G. A distance from an end portion of the opening  120 B to an end portion of the opening  120 G is d1. In this case, the end portion of the opening  120 B refers to a part in contact with the pixel electrode  124 B. In addition, the end portion of the opening  120 G refers to a part in contact with the pixel electrode  124 G. The first portion  134 - 1  of the carrier absorption layer  134  is arranged on a side closer to the opening  120 G than an intermediate part d1/2 between the end portion of the opening  120 G and the end portion of the opening  120 B. 
     Although the end portion of the light-emitting layer  1326  adjacent to the light-emitting layer  132 R is not shown in detail in  FIG.  4   , it is the same as the end portion  132 B- 1  of the light-emitting layer  132 B. That is, the carrier absorption layer  134  is arranged at a position where the end portion of the light-emitting layer  132 B overlaps the end portion of the light-emitting layer  132 R. Specifically, the carrier absorption layer  134  includes a first portion arranged between the common layer  128  and the light-emitting layer  132 R, or a second portion arranged between the light-emitting layer  132 B and the light-emitting layer  132 R. In the carrier absorption layer  134 , the first portion and the second portion have a contiguous shape. In a cross-sectional view, since the carrier absorption layer  134  is also arranged at the end portion of the light-emitting layer  132 B, the carrier absorption layer  134  may be defined as having a third part connecting the first portion and the second portion. 
     The first portion of the carrier absorption layer  134  is arranged so as to be close to the light-emitting area (the opening  120 R) of the light-emitting element  130 R. A distance from the end portion of the opening  120 B to the end portion of the opening  120 R is d2. In this case, the end portion of the opening  120 R refers to a part in contact with the pixel electrode  124 R. The first portion of the carrier absorption layer  134  is arranged on a side closer to the opening  120 R than an intermediate part d2/2 between the end portion of the opening  120 G and the end portion of the opening  120 B. 
     In this way, by separately arranging the end portion of the light-emitting layer  132 B by the carrier absorption layer  134  from the end portions of the light-emitting layers  132 R and  132 G where unintended light emission is likely to occur, the carrier absorption layer  134  can absorb the holes at the end portion of the light-emitting layer  132 B, thereby preventing the holes from moving in the thickness direction of the light-emitting layer  232 B or the transverse direction. Therefore, the strength of the leakage current in the transverse direction from the light-emitting element  130 B can be reduced at the end portion of the light-emitting layer  132 B. As a result, it is possible to suppress the occurrence of unintended light emission in the light-emitting layer  132 R or the light-emitting layer  132 G. 
     &lt;Modification of Carrier Absorption Layer&gt; 
     A modification of the carrier absorption layer will be described.  FIG.  5    is a partially enlarged view of the cross-sectional view shown in  FIG.  3   .  FIG.  5    shows an enlarged view of a border area between the light-emitting element  1306  and the light-emitting element  130 G. A carrier absorption layer  134 A is arranged at a position where the end portion  132 B- 1  of the light-emitting layer  132 B overlaps the end portion  132 G- 1  of the light-emitting layer  132 G. Specifically, the carrier absorption layer  134 A includes a first portion  134 A- 1  arranged between the common layer  128  and the light-emitting layer  132 G, or a second portion  134 A- 2  arranged between the common layer  128  and the light-emitting layer  132 B. In the carrier absorption layer  134 A, the first portion  134 A- 1  and the second portion  134 A- 2  have a contiguous plate-like shape. 
     In addition, the first portion  134 A- 1  of the carrier absorption layer  134 A may be arranged so as to be close to the light-emitting area (the opening  120 G) of the light-emitting element  130 G. The distance from the end portion of the opening  120 B to the end portion of the opening  120 G is d1. In this case, the end portion of the opening  120 B refers to a part in contact with the pixel electrode  124 B. In addition, the end portion of the opening  120 G refers to a part in contact with the pixel electrode  124 G. The first portion  134 A- 1  of the carrier absorption layer  134 A is arranged on a side closer to the opening  120 G than an intermediate part d1/2 between the end portion of the opening  120 G and the end portion of the opening  120 B. 
     Although the end portion of the light-emitting layer  1326  adjacent to the light-emitting layer  132 R is not shown in detail in  FIG.  5   , it is the same as the end portion  132 B- 1  of the light-emitting layer  132 B. That is, the carrier absorption layer  134 A is arranged at the position where the end portion of the light-emitting layer  132 B overlaps the end portion of the light-emitting layer  132 R. Specifically, the carrier absorption layer  134 A includes a first portion arranged between the common layer  128  and the light-emitting layer  132 R, or a second portion arranged between the common layer  128  and the light-emitting layer  132 B. In the carrier absorption layer  134 A, the first portion and the second portion have a contiguous plate-like shape. 
     The first portion of the carrier absorption layer  134 A is arranged so as to be close to the light-emitting area (the opening  120 R) of the light-emitting element  130 R. The distance from the end portion of the opening  120 B to the end portion of the opening  120 R is d2. In this case, the end portion of the opening  120 R refers to a part in contact with the pixel electrode  124 R. The first portion of the carrier absorption layer  134 A is arranged on a side closer to the opening  120 R than the intermediate part d2/2 between the end portion of the opening  120 G and the end portion of the opening  120 B. 
     In this way, at the end portion of the light-emitting layer  132 B, the carrier absorption layer  134 A can absorb the holes by arranging the end portion of the light-emitting layer  132 B separately from the end portions of the light-emitting layers  132 R and  132 G where unintended light emission is likely to occur by the carrier absorption layer  134 A, thereby preventing the holes from moving in the thickness direction of the light-emitting layer  232 B or the transverse direction. Therefore, the strength of the leakage current in the transverse direction from the light-emitting element  130 B can be reduced at the end portion of the light-emitting layer  132 B. As a result, it is possible to suppress the occurrence of unintended light emission in the light-emitting layer  132 R or the light-emitting layer  132 G. 
     The light-emitting layer  132 B in contact with the common layer  128  including at least one of the hole-transport layer and the hole injection layer preferably contains an electron-transporting light-emitting material. When the light-emitting element  130 B emits light, it is possible to prevent the holes in the common layer  128  from passing through the light-emitting layer  132 B in the thickness direction. The holes pass through the end portion of the light-emitting layer  132 B in the transverse direction, so that the strength of the leakage current in the transverse direction can be further reduced. As a result, it is possible to suppress the occurrence of unintended light emission in the light-emitting layer  132 R or the light-emitting layer  132 G. 
     Although not shown in  FIG.  3    to  FIG.  5   , a sealing film may be arranged above the light-emitting elements  130 R,  130 G, and  130 B. The sealing film is composed by combining an inorganic insulating film and an organic insulating film. As a result, it is possible to prevent water from entering the organic layer including the light-emitting layer  132  and the common layers  128  and  136  in the light-emitting elements  130 R,  130 G, and  130 B. 
     &lt;Method for Manufacturing Display Device&gt; 
     Next, a method for manufacturing the display device  100  will be described with reference to  FIG.  6    to  FIG.  8   . 
     Although not shown in  FIG.  6    to  FIG.  8   , a transistor constituting the pixel circuit is arranged above the substrate  101 . Also, since a known method for manufacturing the transistor may be applied to a method for manufacturing the pixel circuit formed on the substrate  101 , a detailed explanation thereof is omitted. An interlayer insulating film containing at least one of silicon oxide and silicon nitride is formed on the transistor. A source electrode and a drain electrode are formed on the interlayer insulating film. 
       FIG.  6    is a diagram illustrating a process for forming the insulating film  122 , the pixel electrodes  124 R,  124 G, and  124 B, and an insulating layer  126 . The insulating film  122  functions as a flattening film. The insulating film  122  is made of an organic resin material. The organic resin material may be a known organic resin material such as a polyimide-based, polyamide-based, acrylic-based, epoxy-based, or siloxane-based organic resin. Arranging the insulating film  122  on the transistor or the interlayer insulating film makes it possible to relieve any unevenness of the transistor. A contact hole is formed in the insulating film  122 . 
     The pixel electrodes  124 R,  124 G, and  124 B are formed on the insulating film  122 . Each of the pixel electrodes  124 R,  124 G, and  124 B is electrically connected to the source electrode or the drain electrode connected to the transistor via the contact hole arranged in the insulating film  122 . In the present embodiment, the pixel electrodes  124 R,  124 G, and  124 B function as anodes. A highly reflective metal film is used as the pixel electrodes  124 R,  124 G, and  124 B. Alternatively, a stacked structure of a high-work-function transparent conductive layer such as an indium-oxide-based transparent conductive layer (e.g., ITO) or a zinc-oxide-based transparent conductive layer (e.g., IZO, ZnO) and the metal film is used as the pixel electrodes  124 R,  124 G, and  124 B. 
     The insulating layer  126  made of an organic resin material is formed on the pixel electrodes  124 R,  124 G, and  124 B. A known organic resin material such as a polyimide-based, polyamide-based, acrylic-based, epoxy-based, or siloxane-based organic resin material can be used. The insulating layer  126  has the openings  120 R,  120 G, and  120 B for each of a part of the pixel electrode  124 R, a part of the pixel electrode  124 G, and a part of the pixel electrode  124 B. The insulating layer  126  is arranged so as to cover end portions (edges) of the pixel electrodes  124 R,  124 G, and  124 B between the adjacent pixel electrodes  124 R,  124 G, and  124 B. The insulating layer  126  functions as a member that separates the adjacent pixel electrodes  124 R,  124 G, and  124 B. Therefore, the insulating layer  126  is also commonly referred to as a “barrier” or a “bank.” A part of the pixel electrodes  124 R,  124 G, and  124 B exposed by the openings  120 R,  120 G, and  120 B of the insulating layer  126  is the light-emitting area of the light-emitting elements  130 R,  130 G, and  130 B. The openings  120 R,  120 G, and  120 B of the insulating layer  126  are preferably such that the inner wall is a tapered shape. Therefore, when forming the common layer  128  and the light-emitting layers  132 R,  132 G, and  132 B, which will be described later, it is possible to reduce a coverage defect at the end portions of the pixel electrodes  124 R,  124 G, and  124 B. 
       FIG.  7    is a diagram illustrating a process for forming the common layer  128 , the light-emitting layer  132 B, and the carrier absorption layer  134 . the common layer  128  is formed on the pixel electrodes  124 R,  124 G, and  124 B and the insulating layer  126 . The common layer  128  includes at least one of the hole transport layers and the hole injection layer. Known materials may be used as the hole transport layer and the hole injection layer as appropriate. 
     The light-emitting layers  132 R,  132 G, and  132 B are preferably formed in the order of the light-emitting layer having the highest light emission start voltage. In the present embodiment, the light emission start voltage of the light-emitting layer  132 B is higher than the light emission start voltages of the light-emitting layer  132 R and the light-emitting layer  132 G. Therefore, the light-emitting layer  132 B is first formed on the common layer  128 . The end portion  132 B- 1  of the light-emitting layer  132 B is formed so as to be close to the opening  120 R arranged in the insulating layer  126 . In addition, the end portion  132 B- 1  of the light-emitting layer  132 B is formed so as to be close to the opening  120 G arranged in the insulating layer  126 . In addition, the light-emitting layer  132 B is preferably a light-emitting material having an electron-transport property, and a known material may be appropriately used. 
     The carrier absorption layer  134  is arranged at the end portion  132 B- 1  of the light-emitting layer  132 B. Specifically, the first portion  134 - 1  of the carrier absorption layer  134  is arranged at a position on the common layer  128  adjacent to the end portion  132 B- 1  of the light-emitting layer  132 B, and the second portion  134 - 2  of the carrier absorption layer  134  is arranged above the end portion  132 B- 1  of the light-emitting layer  132 B. In addition, in a cross-sectional view, the carrier absorption layer  134  is also arranged on the side surface of the end portion of the light-emitting layer  132 B, and the carrier absorption layer  134  in which the first portion  134 - 1  and the second portion  134 - 2  have a contiguous shape is formed. The carrier absorption layer  134  is selected from known materials having electron transport properties. Also, a thickness of the carrier absorption layer  134  is not particularly limited as long as the movement of the holes can be sufficiently suppressed. For example, the thickness may be 10 nm or more. 
     Also, in the case of manufacturing a display device having the carrier absorption layer  134 A, the carrier absorption layer  134 A is arranged above the common layer  128 , and the end portion  132 B- 1  of the light-emitting layer  132 B is formed at a position corresponding to the second portion  134 - 2  of the carrier absorption layer  134 A. In the later process, the light-emitting layer  132 G may be formed so as to cover the position corresponding to the first portion  134 - 1  of the carrier absorption layer  134 A. 
       FIG.  8    is a diagram illustrating a process for forming the light-emitting layer  132 R, the light-emitting layer  132 G, and the common layer  136 . The light-emitting layer  132 G is formed in the opening  120 G. A first end portion of the light-emitting layer  132 G is formed to overlap the light-emitting layer  132 B via the carrier absorption layer  134 . Specifically, the first end portion of the light-emitting layer  132 G is arranged above the common layer  128  via the first portion  134 - 1  of the carrier absorption layer  134  and extends over the end portion  132 B- 1  of the light-emitting layer  132 B via the second portion  134 - 2  of the carrier absorption layer  134 . 
     In addition, the light-emitting layer  132 R is formed in the opening  120 R. A first end portion of the light-emitting layer  132 R is formed to overlap the light-emitting layer  132 B via the carrier absorption layer  134 . Specifically, the first end portion of the light-emitting layer  132 R is arranged above the common layer  128  via the first portion  134 - 1  of the carrier absorption layer  134  and extends over the end portion  132 B- 1  of the light-emitting layer  132 B via the second portion  134 - 2  of the carrier absorption layer  134 . 
     Next, the common layer  136  is formed on the light-emitting layers  132 R,  132 G, and  132 B. The common layer  136  includes at least one of the electron transport layers and the electron injection layer. Known materials may be used as the electron transport layer and the electron injection layer as appropriate. Also, in  FIG.  8   , although an example is shown in which the second portion  134 - 2  of the carrier absorption layer  134  is exposed from the first end portion of the light-emitting layer  132 R and the first end portion of the light-emitting layer  132 G and the common layer  136  is arranged above the second portion  134 - 2  of the exposed carrier absorption layer  134 , the present invention is not limited to such an arrangement, and the second portion  134 - 2  of the carrier absorption layer  134  may not be exposed from the first end portion of the light-emitting layer  132 R and the first end portion of the light-emitting layer  132 G as long as the light-emitting layer  132 B can be separated from the first end portion of the light-emitting layer  132 R or the first end portion or the light-emitting layer  132 G. 
     Finally, the display device  100  shown in  FIG.  3    can be formed by forming the counter electrode  138  on the common layer  136 . 
     In the present embodiment, although the case where the light-emitting layer  132 R is formed after the light-emitting layer  132 G is formed is described, the present invention is not limited to this. As long as the light emission start voltage of the light-emitting layer  132 G and the light emission start voltage of the light-emitting layer  132 R are approximately the same, either layer may be formed first. Alternatively, if there is a difference between the light emission start voltage of the light-emitting layer  132 G and the light emission start voltage of the light-emitting layer  132 R, the light-emitting layer having a higher light emission start voltage may be formed first. 
     In  FIG.  2   , although the structure is shown in which the end portion of the light-emitting layer  132 R and the end portion of the light-emitting layer  132 G adjacent to each other overlap, the end portion of the light-emitting layer  132 R and the end portion of the light-emitting layer  132 G adjacent to each other may not overlap. This is because, if the light emission start voltage of the light-emitting layer  132 R and the light emission start voltage of the light-emitting layer  132 G are approximately the same, even if the light-emitting element  130 R or the light-emitting element  130 G emits light, the effect of the leakage current in the transverse direction from the light-emitting layer  132 R and the light-emitting layer  132 G is small. 
     In addition, in the present embodiment, although the method for manufacturing the display device  100  has been described as exemplifying the case where the light emission start voltage of the light-emitting element  130 B is higher than the light emission start voltages of the light-emitting elements  130 R and  130 G, the display device  100  according to the present embodiment can be manufactured by forming the carrier absorption layer  134  at the end portion of the light-emitting layer having a higher light emission start voltage even if the light emission start voltage of the light-emitting element  130 R is higher than the light emission start voltages of the light-emitting elements  130 G and  130 B or even if the light emission start voltage of the light-emitting element  130 G is higher than the light emission start voltages of the light-emitting elements  130 R and  130 B. 
     The display device  100  according to an embodiment of the present invention is not limited to the configuration shown in  FIG.  2    to  FIG.  5   . For example, the arrangement of the pixels  105 R,  105 G, and  105 B is not limited to the arrangement of the pixels  105 R,  105 G, and  105 B shown in  FIG.  2   . 
     Next, display devices  100 A to  100 F according to Modifications 1 to 6 in which a part of the components of the display device  100  is changed will be described with reference to  FIG.  9    to  FIG.  16   . In the display devices  100 A to  100 E according to Modifications 1 to 5, the arrangement of the light-emitting layers  132 R,  132 G, and  132 B is different from the arrangement in the display device  100 . In addition, in the display device  100 F according to Modification 6, the arrangement of the anode and the cathode is different from the arrangement of the anode and the cathode in the display device  100 . In the following description, the same components as those of the display device  100  may be referred in to the descriptions of  FIG.  2    to  FIG.  5   . 
     &lt;Modification 1&gt; 
       FIG.  9    is a pixel layout diagram when the display device  100 A according to an embodiment of the present invention is in a plan view. In addition,  FIG.  10    is a cross-sectional view when the display device  100 A shown in  FIG.  9    is cut along a line A 1 -A 2 . In Modification 1, the display device  100 A with a square arrangement in which the light-emitting layers  132 R and  132 G having a smaller area than the light-emitting layer  132 B are combined and arranged so as to be a rectangular shape will be described. In Modification 1, the case where the light emission start voltage of the light-emitting layer  132 B is higher than the light emission start voltages of the light-emitting layer  132 R and the light-emitting layer  132 G will be described. 
       FIG.  9    shows an area where the pixels  105 R,  105 G, and  105 B are arranged. The pixel  105 R and the pixel  105 B are arranged side by side in the X-direction. The pixel  105 G and the pixel  105 B are arranged side by side in the X-direction. The pixel  105 R and the pixel  105 G are arranged side by side in the Y-direction. In  FIG.  9   , an area indicated by a solid line is an area where the light-emitting layers  132 R,  132 G, and  132 B are arranged. In addition, an area surrounded by a dotted line is an area where the openings  120 R,  120 G, and  120 B are arranged in the insulating layer. Also, in the display device  100 A, the stacking order of the light-emitting layers  132 R,  132 G, and  132 B is the same as in the display device  100 . 
     As shown in  FIG.  10   , when the display device  100 A is viewed in a cross-section, the first end portion of the light-emitting layer  132 B overlaps the light-emitting layers  132 R and  132 G. In addition, the second end portion of the light-emitting layer  132 B facing the first end portion overlaps the other light-emitting layers  132 R and  132 G. In this case, the carrier absorption layer  134  is arranged at a position where the first end portion of the light-emitting layer  1326  overlaps the light-emitting layers  132 R and  132 G and/or a position adjacent to the position where the first end portion of the light-emitting layer  1326  overlaps the light-emitting layers  132 R and  132 G. In addition, the carrier absorption layer  134  is also arranged at a position where the second end portion of the light-emitting layer  132 B overlaps the light-emitting layers  132 R and  132 G and/or a position adjacent to the position where the second end portion of the light-emitting layer  132 B overlaps the light-emitting layers  132 R and  132 G. In the display device  100 A, a plurality of light-emitting layers  132 B is arranged in the Y-direction, and the carrier absorption layer  134  is arranged contiguously at the end portion of the plurality of light-emitting layers  132 B along the Y-direction. 
     Also, the first end portion of the light-emitting layer  132 B is preferably arranged so as to be close to the openings  120 R and  120 G of the light-emitting elements  130 R and  130 G. In addition, the second end portion of the light-emitting layer  132 B is preferably arranged so as to be close to the openings  120 R and  120 G of the other light-emitting elements  130 R and  130 G. Since the end portion of the light-emitting layer  132 B is separated from the light-emitting area of the light-emitting layer  132 B, unintended light emission can be suppressed in the light-emitting layers  132 R and  132 G. 
     In the display device  100 A, the carrier absorption layer  134  may have the same configuration as that described for the display device  100 . That is, the carrier absorption layer  134  includes a first portion arranged between the common layer  128  and the light-emitting layers  132 R and  132 G, or a second portion arranged between the light-emitting layer  132 B and the light-emitting layers  132 R and  132 G. In the carrier absorption layer  134 , the first portion and the second portion have a contiguous shape. In addition, the first portion of the carrier absorption layer  134  may be arranged so as to be close to the light-emitting area (the openings  120 R and  120 G) of the light-emitting elements  130 R and  130 G. 
     In this way, at the end portion of the light-emitting layer  132 B, the carrier absorption layer  134  can absorb the holes by arranging the end portion of the light-emitting layer  1326  separately from the end portion of the light-emitting layers  132 R and  132 G where unintended light emission is likely to occur by the carrier absorption layer  134 , thereby preventing the holes from moving in the thickness direction of the light-emitting layer  232 B or the transverse direction. Therefore, the strength of the leakage current in the transverse direction from the light-emitting element  130 B can be reduced at the end portion of the light-emitting layer  132 B. As a result, it is possible to suppress the occurrence of unintended light emission in the light-emitting layer  132 R or the light-emitting layer  132 G. In addition, the carrier absorption layer  134 A described above can also be applied to the display device  100 A. 
     Also, in Modification 1, the carrier absorption layer  134 A described above can be arranged in place of the carrier absorption layer  134 . In the case of manufacturing the display device  100 A having the carrier absorption layer  134 A, the carrier absorption layer  134 A may be arranged above the common layer  128 , and the end portion of the light-emitting layer  132 B may be formed at a position corresponding to the second portion of the carrier absorption layer  134 . In the later process, the position corresponding to the first portion of the carrier absorption layer  134 A may be covered, and the end portions of the light-emitting layers  132 R and  132 G may be formed so as to overlap the second portion of the carrier absorption layer  134  and the end portion of the light-emitting layer  132 B. 
     &lt;Modification 2&gt; 
       FIG.  11    is a pixel layout diagram when the display device  100 B according to an embodiment of the present invention is in a plan view. In the square arrangement described in Modification 2, the case where the light emission start voltage of the light-emitting layer  132 R having a smaller area than the light-emitting layer  132 B is higher than the light emission start voltages of the light-emitting layer  132 G and the light-emitting layer  132 B will be described. 
     Since the light emission start voltage of the light-emitting layer  132 R is higher than the light emission start voltages of the light-emitting layer  132 B and the light-emitting layer  132 G, a leakage current occurs in the transverse direction from the light-emitting layer  132 R to the light-emitting layers  132 B and  132 G, so that unintended light emission is likely to occur. Therefore, in Modification 2, the leakage current in the X-direction from the light-emitting layer  132 R to the light-emitting layer  1326  needs to be prevented, and the leakage current in the Y-direction from the light-emitting layer  132 R to the light-emitting layer  132 G needs to be prevented. 
     As shown in  FIG.  11   , in the display device  1006 , the carrier absorption layer  134  is arranged at least at a position where the end portion of the light-emitting layer  132 R overlaps the end portion of the light-emitting layer  132 B and a position where the end portion of the light-emitting layer  132 R overlaps the light-emitting layer  132 G. In this case, the carrier absorption layer  134  is arranged at the position where the end portion of the light-emitting layer  132 R overlaps the light-emitting layers  132 B and  132 G and/or the position where the end portion of the light-emitting layer  132 R overlaps the light-emitting layers  132 B and  132 G. An example in which the carrier absorption layer  134  is arranged at an outer edge of the light-emitting layer  132 R so as to surround the light-emitting layer  132 R is shown in  FIG.  11   . Also, in the display device  1006 , the carrier absorption layer  134  may be arranged only at the position where the end portion of the light-emitting layer  132 R overlaps the end portion of the light-emitting layer  132 B, and at the position where the end portion of the light-emitting layer  132 R overlaps the light-emitting layer  132 G. 
     In addition, the end portion of the light-emitting layer  132 R is preferably arranged so as to be close to the opening  120 B and  120 G of the light-emitting elements  1306  and  130 G. Since the end portion of the light-emitting layer  132 R is separated from the light-emitting area of the light-emitting layer  132 R, unintended light emission can be suppressed in the light-emitting layers  1326  and  132 G. 
     In the display device  1006 , the carrier absorption layer  134  may have the same configuration as that described for the display device  100 . That is, the carrier absorption layer  134  includes a first portion arranged between the common layer  128  and the light-emitting layers  132 B and  132 G, or a second portion arranged between the light-emitting layer  132 R and the light-emitting layers  132 B and  132 G. In the carrier absorption layer  134 , the first portion and the second portion have a contiguous shape. In addition, the first portion of the carrier absorption layer  134  may be arranged so as to be close to the light-emitting area (the openings  120 B and  120 G) of the light-emitting elements  130 B and  130 G. 
     In this way, at the end portion of the light-emitting layer  132 R, the carrier absorption layer  134  can absorb the holes by arranging the end portion of the light-emitting layer  132 R having a small area separately from the end portions of the light-emitting layers  132 B and  132 G where unintended light emission is likely to occur by the carrier absorption layer  134 , thereby preventing the holes from moving in the thickness direction of the light-emitting layer  232 R or the transverse direction. Therefore, the strength of the leakage current in the transverse direction from the light-emitting element  130 R can be reduced at the end portion of the light-emitting layer  132 R. As a result, it is possible to suppress the occurrence of unintended light emission in the light-emitting layer  132 B or the light-emitting layer  132 G. 
     Also, the present modification can also be applied to the square arrangement in which the light emission start voltage of the light-emitting layer  132 G is higher than the light emission start voltages of the light-emitting layer  132 B and the light-emitting layer  132 R. That is, the carrier absorption layer  134  may be arranged at a position where the end portion of the light-emitting layer  132 G overlaps the light-emitting layers  132 B and  132 R and/or a position adjacent to the position where the end portion of the light-emitting layer  132 G overlaps the light-emitting layers  132 B and  132 R. For example, the carrier absorption layer  134  may be arranged at an outer edge of the light-emitting layer  132 G so as to surround the light-emitting layer  132 G. 
     In this way, at the end portion of the light-emitting layer  132 G, the carrier absorption layer  134  can absorb the holes by arranging the end portion of the light-emitting layer  132 G having a small area separately from the end portion of the light-emitting layers  132 B and  132 R where unintended light emission is likely to occur by the carrier absorption layer  134 , thereby preventing the holes from moving in the thickness direction of the light-emitting layer  132 G or the transverse direction. Therefore, the strength of the leakage current in the transverse direction from the light-emitting element  130 G can be reduced at the end portion of the light-emitting layer  132 G. As a result, it is possible to suppress the occurrence of unintended light emission in the light-emitting layer  132 B or the light-emitting layer  132 R. 
     Also, in Modification 2, the carrier absorption layer  134 A described above can be arranged in place of the carrier absorption layer  134 . In the case of manufacturing the display device  1006  having the carrier absorption layer  134 A, the carrier absorption layer  134 A may be arranged above the common layer  128 , the end portion of the light-emitting layer  132 R may be formed at the position corresponding to the second portion of the carrier absorption layer  134 . In the later process, the position corresponding to the first portion of the carrier absorption layer  134 A may be covered, and the end portions of the light-emitting layers  132 G and  132 B may be formed so as to overlap the second portion of the carrier absorption layer  134  and the end portion of the light-emitting layer  132 R. In addition, the carrier absorption layer  134 A can also be applied to the square arrangement in which the light emission start voltage of the light-emitting layer  132 G is higher than the light emission start voltages of the light-emitting layer  1326  and the light-emitting layer  132 R by a similar method. 
     &lt;Modification 3&gt; 
     Modification 1 in which the light emission start voltage of the light-emitting layer  132 B having a large area in the square arrangement is higher than the light emission start voltages of the light-emitting layers  132 R and  132 G having a small area and Modification 2 in which the light emission start voltage of the light-emitting layer  132 R or the light-emitting layer  132 B having a smaller area than the light-emitting layer  132 B is higher than the light emission start voltage of the light-emitting layer  132 B having a large area are described. In Modification 3, the case where the light emission start voltages of the light-emitting layers  132 R,  132 G, and  132 B differ from each other in the square arrangement will be described.  FIG.  12    is a pixel layout diagram when the display device  100 C according to an embodiment of the present invention is in a plan view. 
     When the light emission start voltage of the light-emitting layer  132 R is higher than the light emission start voltage of the light-emitting layer  132 G and the light emission start voltage of the light-emitting layer  132 G is higher than the light emission start voltage of the light-emitting layer  132 B, the leakage current in the X-direction from the light-emitting layer  132 R to the light-emitting layer  1326  needs to be prevented and the leakage current in the Y-direction from the light-emitting layer  132 R to the light-emitting layer  132 G needs to be prevented. 
     As shown in  FIG.  12   , in the display device  100 C, the carrier absorption layer  134  is arranged at the position where the end portion of the light-emitting layer  132 R overlaps the light-emitting layer  132 G and at the position where the end portion of the light-emitting layer  132 R overlaps the end portion of the light-emitting layer  1326 . In this case, the carrier absorption layer  134  is arranged at a position where the end portion of the light-emitting layer  132 R overlaps the light-emitting layers  132 G and  132 B, and/or a position adjacent to the position where the end portion of the light-emitting layer  132 R overlaps the light-emitting layers  132 G and  132 B. In  FIG.  12   , although the example of a ladder shape is shown in which the carrier absorption layer  134  extending in the X-direction is arranged at the position where the end portion of the light-emitting layer  132 R overlaps the end portion of the light-emitting layer  132 G, and the carrier absorption layer  134  extending in the Y-direction is arranged at the position where the end portion of the light-emitting layer  132 B overlaps the end portion of the light-emitting layers  132 R and  132 G, the arrangement of the carrier absorption layer  134  is not limited to this. For example, the carrier absorption layer  134  may be arranged at the outer edge of the light-emitting layer  132 R so as to surround the light-emitting layer  132 R, and the carrier absorption layer  134  may be arranged at the outer edge of the light-emitting layer  132 G so as to surround the light-emitting layer  132 G. 
     In addition, the end portion of the light-emitting layer  132 R is preferably arranged so as to be close to the openings  120 G and  120 B of the light-emitting elements  130 G and  130 B. The end portion of the light-emitting layer  132 G is preferably arranged so as to be close to the openings  120 R and  120 B of the light-emitting elements  130 R and  130 B. Since the end portions of the light-emitting layers  132 R and  132 G are separated from the light-emitting areas of the light-emitting layers  132 R and  132 G, unintended light emission can be suppressed in the light-emitting layers  132 G and  132 B. 
     In the display device  100 C, the carrier absorption layer  134  may have the same configuration as that described for the display device  100 . In this way, at the end portion of the light-emitting layer  132 R, the carrier absorption layer  134  can absorb the holes by arranging the end portion of the light-emitting layer  132 R having a small area separately from the end portion of the light-emitting layers  132 B and  132 G where unintended light emission is likely to occur by the carrier absorption layer  134 , thereby preventing the holes from moving in the thickness direction of the light-emitting layer  132 R or the transvers direction. Therefore, the strength of the leakage current in the transverse direction from the light-emitting element  130 R can be reduced at the end portion of the light-emitting layer  132 R. As a result, it is possible to suppress the occurrence of unintended light emission in the light-emitting layer  132 B or the light-emitting layer  132 G. 
     Also, the present modification can also be applied to the square arrangement in which the light emission start voltage of the light-emitting layer  132 G is higher than the light emission start voltages of the light-emitting layer  132 B and the light-emitting layer  132 R. That is, the carrier absorption layer  134  may be arranged at the position where the end portion of the light-emitting layer  132 G overlaps the light-emitting layers  1326  and  132 R and/or the position adjacent to the position where the end portion of the light-emitting layer  132 G overlaps the light-emitting layers  132 B and  132 R. For example, the carrier absorption layer  134  may be arranged at the outer edge of the light-emitting layer  132 G so as to surround the light-emitting layer  132 G. 
     In this way, at the end portions of the light-emitting layers  132 R,  132 G, and  132 B, the carrier absorption layer  134  can absorb the holes by arranging the end potions of the light-emitting layers  132 R,  132 G, and  132 B separately by the carrier absorption layer  134 , thereby preventing the holes from moving in the thickness direction of the light-emitting layers  132 R and  132 G or the transverse direction. Therefore, the strength of the leakage current in the X-direction from the light-emitting layers  132 R and  132 G to the light-emitting layer  132 B can be reduced at the end portions of the light-emitting layers  132 R and  132 G. In addition, the strength of the leakage current in the Y-direction from the light-emitting layer  132 R to the light-emitting layer  132 G can be reduced at the end portion of the light-emitting layer  132 R. As a result, it is possible to suppress the occurrence of unintended light emission in the light-emitting layer  132 G or the light-emitting layer  132 B. 
     Also, in Modification 3, the carrier absorption layer  134 A described above can be arranged in place of the carrier absorption layer  134 . For example, in the case of manufacturing the display device  100 C having the carrier absorption layer  134 A, the ladder-shaped carrier absorption layer  134 A shown in  FIG.  12    is arranged above the common layer  128 , and the end portion of the light-emitting layer  132 R is formed at the position corresponding to the second portion of the carrier absorption layer  134 A. In the later process, the end portion of the light-emitting layer  132 G is formed so as to cover the position corresponding to the first portion of the carrier absorption layer  134 A and overlap the second portion of the carrier absorption layer  134  and the end portion of the light-emitting layer  132 R. In addition, the end portion of the light-emitting layer  132 B may be formed so as to cover the position corresponding to the first portion of the carrier absorption layer  134 A and overlap the second portion of the carrier absorption layer  134  and the end portion of the light-emitting layer  132 R, and to cover the position corresponding to the first portion of the carrier absorption layer  134 A and overlap the second portion of the carrier absorption layer  134  and the end portion of the light-emitting layer  132 G. 
     &lt;Modification 4&gt; 
       FIG.  13    is a pixel layout diagram when the display device  100 D according to an embodiment of the present invention is in a plan view. In Modification 4, the display device  100 D with a delta arrangement in which the light-emitting layers  132 R,  132 G, and  132 B arranged in the first column and the light-emitting layers  132 R,  132 G, and  132 B arranged in the second column are arranged half-shifted in the X-direction with respect to the length of the light-emitting layer in the X-direction will be described. In Modification 4, the case where the light emission start voltage of the light-emitting layer  132 B is higher than the light emission start voltages of the light-emitting layer  132 R and the light-emitting layer  132 G will be described. 
     Since the light emission start voltage of the light-emitting layer  132 B is higher than the light emission start voltages of the light-emitting layer  132 R and the light-emitting layer  132 G, the leakage current in the transverse direction from the light-emitting layer  132 B to the light-emitting layers  132 R and  132 G occurs, and unintended light emission is likely to occur. Therefore, in Modification 4, the leakage current in the X-direction from the light-emitting layer  132 B to the light-emitting layers  132 R and  132 G needs to be prevented, and the leakage current in the Y-direction from the light-emitting layer  132 B to the light-emitting layers  132 R and  132 G needs to be prevented. 
     As shown in  FIG.  13   , in the display device  100 D, the carrier absorption layer  134  is arranged at least at a position where the end portion of the light-emitting layer  1326  overlaps the end portion of the light-emitting layer  132 R and a position where the end portion of the light-emitting layer  132 B overlaps the light-emitting layer  132 G. In this case, the carrier absorption layer  134  is arranged at a position where the end portion of the light-emitting layer  132 B overlaps the light-emitting layers  132 R and  132 G and/or a position adjacent to the position where the end portion of the light-emitting layer  132 B overlaps the light-emitting layers  132 R and  132 G. In  FIG.  13   , an example in which the carrier absorption layer  134  is arranged at an outer edge of the light-emitting layer  1326  so as to surround the light-emitting layer  132 B. Also, in the display device  100 D, the carrier absorption layer  134  may be arranged only at the position where the end portion of the light-emitting layer  132 B overlaps the end portion of the light-emitting layer  132 R, and at the position where the end portion of the light-emitting layer  1326  overlaps the light-emitting layer  132 G. 
     In addition, the end portion of the light-emitting layer  132 B is preferably arranged so as to be close to the openings  120 R and  120 G of the light-emitting elements  130 R and  130 G. Since the end portion of the light-emitting layer  132 B is separated from the light-emitting area of the light-emitting layer  132 B, unintended light emission can be suppressed in the light-emitting layers  132 R and  132 G. 
     In the display device  100 D, the carrier absorption layer  134  may have the same configuration as that described for the display device  100 . That is, similar to the configuration of the carrier absorption layer  134  described for the display device  1006 , the carrier absorption layer  134  includes a first portion arranged between the common layer  128  and the light-emitting layers  132 R and  132 G, or a second portion arranged between the light-emitting layer  132 B and the light-emitting layers  132 R and  132 G. In the carrier absorption layer  134 , the first portion and the second portion have a contiguous shape. In addition, the first portion of the carrier absorption layer  134  may be arranged so as to be close to the light-emitting areas (the openings  120 R and  120 G) of the light-emitting elements  130 R and  130 G. 
     In this way, at the end portion of the light-emitting layer  132 B, the carrier absorption layer  134  can absorb the holes by arranging the end portion of the light-emitting layer  132 B separately from the end portions of the light-emitting layers  132 R and  132 G where unintended light emission is likely to occur by the carrier absorption layer  134 , thereby preventing the holes from moving in the thickness direction of the light-emitting layer  1326  or the transverse direction. Therefore, the strength of the leakage current in the transverse direction from the light-emitting element  130 B can be reduced at the end portion of the light-emitting layer  132 B. As a result, it is possible to suppress the occurrence of unintended light emission in the light-emitting layer  132 R or the light-emitting layer  132 G. 
     Also, the present modification can also be applied to the delta arrangement in which the light emission start voltage of the light-emitting layer  132 R is higher than the light emission start voltages of the light-emitting layer  132 G and the light-emitting layer  132 B, and the delta arrangement in which the light emission start voltage of the light-emitting layer  132 G is higher than the light emission start voltages of the light-emitting layer  132 R and the light-emitting layer  132 B. That is, the carrier absorption layer  134  may be arranged at the position where the end portion of the light-emitting layer  132 R overlaps the light-emitting layers  132 G and  132 B and/or the position adjacent to the position where the end portion of the light-emitting layer  132 R overlaps the light-emitting layers  132 G and  1326 . Alternatively, the carrier absorption layer  134  may be arranged at the position where the end portion of the light-emitting layer  132 G overlaps the light-emitting layers  132 R and  132 B and/or a position adjacent to the position where the end portion of the light-emitting layer  132 G overlaps the light-emitting layers  132 R and  132 B. For example, the carrier absorption layer  134  may be arranged at the outer edge of the light-emitting layer  132 R or  132 G so as to surround the light-emitting layer  132 R or  132 G. 
     In this way, at the end portion of the light-emitting layer  132 R or  132 G, the carrier absorption layer  134  can absorb the holes by arranging the end portion of the light-emitting layer  132 R or  132 G separately from the end portion of the light-emitting layer  132 B,  132 R or  132 G where unintended light emission is likely to occur by the carrier absorption layer  134 , thereby preventing the holes from moving in the thickness direction of the light-emitting layer  132 R or  132 G or the transverse direction. Therefore, the strength of the leakage current in the transverse direction from the light-emitting layer  132 R or  132 G can be reduced at the end portion of the light-emitting layer  132 R or  132 G. As a result, it is possible to suppress the occurrence of unintended light emission in the adjacent light-emitting layers. 
     Also, in Modification 4, the carrier absorption layer  134 A described above can be arranged in place of the carrier absorption layer  134 . In the case of manufacturing the display device  1006  having the carrier absorption layer  134 A, the carrier absorption layer  134 A is arranged above the common layer  128 , and the end portion of the light-emitting layer  132 B is formed at the position corresponding to the second portion of the carrier absorption layer  134 . In the later process, the end portions of the light-emitting layers  132 R and  132 G may be formed so as to cover the position corresponding to the first portion of the carrier absorption layer  134 A and overlap the second portion of the carrier absorption layer  134  and the end portion of the light-emitting layer  132 B. In addition, the carrier absorption layer  134 A can also be applied to the delta arrangement in which the light emission start voltage of the light-emitting layer  132 R or  132 G is higher than light emission start voltages of the other light-emitting layers by a similar method. 
     &lt;Modification 5&gt; 
       FIG.  14    is a pixel layout diagram when the display device  100 E according to an embodiment of the present invention is in a plan view. In Modification 5, the case where the light-emitting elements  130 R,  130 G, and  130 B are arranged in a pentile pattern will be described. 
       FIG.  14    shows an area where the pixels  105 R,  105 G, and  105 B are arranged. The plurality of pixels  105 G is arranged side by side in the X-direction. The pixel  105 G and the pixel  1056  are arranged in the X-direction. The pixel  105 G and the pixel  1056  are arranged side by side in a  8  direction with respect to the X-direction. In addition, the pixel  105 G and the pixel  105 R are arranged side by side in the  8  direction with respect to the X-direction. In Modification 5, the case where the light emission start voltage of the light-emitting layer  132 B is higher than the light emission start voltages of the light-emitting layer  132 R and the light-emitting layer  132 G will be described. 
     Since the light emission start voltage of the light-emitting layer  132 B is higher than the light emission start voltages of the light-emitting layer  132 R and the light-emitting layer  132 G, the leakage current in the transverse direction from the light-emitting layer  132 B to the light-emitting layers  132 R and  132 G occurs, and unintended light emission is likely to occur. Therefore, in Modification 5, the leakage current in the Y-direction from the light-emitting layer  132 B to the light-emitting layer  132 R needs to be prevented, and the leakage current in the  8  direction from the light-emitting layer  132 B to the light-emitting layer  132 G needs to be prevented. 
     As shown in  FIG.  14   , in the display device  100 E, the carrier absorption layer  134  is arranged at least at the position where the end portion of the light-emitting layer  132 B overlaps the end portion of the light-emitting layer  132 R and the position where the end portion of the light-emitting layer  132 B overlaps the light-emitting layer  132 G. In this case, the carrier absorption layer  134  is arranged at the position where the end portion of the light-emitting layer  132 B overlaps the light-emitting layers  132 R and  132 G and/or the position adjacent to the position where the end portion of the light-emitting layer  132 B overlaps the light-emitting layers  132 R and  132 G.  FIG.  14    shows an example in which the carrier absorption layer  134  is arranged at the outer edge of the light-emitting layer  132 B so as to surround the light-emitting layer  132 B. Also, in the display device  100 E, the carrier absorption layer  134  may be arranged only at the position where the end portion of the light-emitting layer  132 B overlaps the end portion of the light-emitting layer  132 R, and at the position where the end portion of the light-emitting layer  132 B overlaps the light-emitting layer  132 G. 
     In addition, the end portion of the light-emitting layer  132 B is preferably arranged so as to be close to the openings  120 R and  120 G of the light-emitting elements  130 R and  130 G. Since the end portion of the light-emitting layer  132 B is separated from the light-emitting area of the light-emitting layer  132 B, unintended light emission can be suppressed in the light-emitting layers  132 R and  132 G. 
     In the display device  100 E, the carrier absorption layer  134  may have the same configuration as that described for the display device  100 . That is, similar to the configuration of the carrier absorption layer  134  described for the display device  1006 , the carrier absorption layer  134  includes a first portion arranged between the common layer  128  and the light-emitting layers  132 R and  132 G, or a second portion arranged between the light-emitting layer  132 B and the light-emitting layers  132 R and  132 G. In the carrier absorption layer  134 , the first portion and the second portion have a contiguous shape. In addition, the first portion of the carrier absorption layer  134  may be arranged so as to be close to the light-emitting areas (openings  120 R and  120 G) of the light-emitting elements  130 R and  130 G. 
     In this way, at the end portion of the light-emitting layer  132 B, the carrier absorption layer  134  can absorb the holes by arranging the end portion of the light-emitting layer  132 B separately from the end portions of the light-emitting layers  132 R and  132 G where unintended light emission is likely to occur by the carrier absorption layer  134 , thereby preventing the holes from moving in the thickness direction of the light-emitting layer  132 B or the transverse direction. Therefore, the strength of the leakage current in the transverse direction from the light-emitting element  130 B can be reduced at the end portion of the light-emitting layer  132 B. As a result, it is possible to suppress the occurrence of unintended light emission in the light-emitting layer  132 R or the light-emitting layer  132 G. 
     Also, the present modification can also be applied to a pentile arrangement in which the light emission start voltage of the light-emitting layer  132 R is higher than the light emission start voltages of the light-emitting layer  132 G and the light-emitting layer  132 B, and a pentile arrangement in which the light emission start voltage of the light-emitting layer  132 G is higher than the light emission start voltages of the light-emitting layer  132 R and the light-emitting layer  132 B. That is, the carrier absorption layer  134  may be arranged at the position where the end portion of the light-emitting layer  132 R overlaps the light-emitting layers  132 G and  132 B and/or the position adjacent to the position where the end portion of the light-emitting layer  132 R overlaps the light-emitting layers  132 G and  132 B. Alternatively, the carrier absorption layer  134  may be arranged at the position where the end portion of the light-emitting layer  132 G overlaps the light-emitting layers  132 R and  132 B and/or the position adjacent to the position where the end portion of the light-emitting layer  132 G overlaps the light-emitting layers  132 R and  132 B. For example, the carrier absorption layer  134  may be arranged at the outer edge of the light-emitting layer  132 R or  132 G so as to surround the light-emitting layer  132 R or  132 G. 
     In this way, at the end portion of the light-emitting layer  132 R or  312 G, the carrier absorption layer  134  can absorbs the holes by arranging the end portion of the light-emitting layer  132 R or  132 G separately from the end portion of the light-emitting layer  132 B,  132 R, or  132 G where unintended light emission is likely to occur by the carrier absorption layer  134 , thereby preventing the holes from moving in the thickness direction of the light-emitting layer  132 R or  132 G or the transverse direction. Therefore, the strength of the leakage current in the transverse direction from the light-emitting layer  132 R or the light-emitting element  130 G can be reduced at the end portion of the light-emitting layer  132 R or  132 G. As a result, it is possible to suppress the occurrence of unintended light emission in the adjacent light-emitting layers. 
     Also, in Modification 5, the carrier absorption layer  134 A described above can be arranged in place of the carrier absorption layer  134 . In the case of manufacturing a display device  1006  having the carrier absorption layer  134 A, the carrier absorption layer  134  is arranged above the common layer  128 , and the end portion of the light-emitting layer  132 B is formed at the position corresponding to the second portion of the carrier absorption layer  134 . In the later process, the end portions of the light-emitting layers  132 R and  132 G may be formed so as to cover the position corresponding to the first portion of the carrier absorption layer  134 A and overlap the second portion of the carrier absorption layer  134  and the end portion of the light-emitting layer  132 B. In addition, the carrier absorption layer  134 A can also be applied to the delta arrangement in which the light emission start voltage of the light-emitting layer  132 R or  132 G is higher than the light emission start voltages of the other emitting layers by a similar method. 
     &lt;Modification 6&gt; 
       FIG.  15    is a pixel layout diagram when the display device  100 F according to an embodiment of the present invention is in a plan view. In addition,  FIG.  16    is a cross-sectional view when the display device  100 F shown in  FIG.  15    is cut along a line A 1 -A 2 . An example in which pixel electrodes  142 R,  142 G, and  142 B of the display device  100 F function as cathodes will be described as Modification 6. Also, in Modification 6, the light emission start voltage of the light-emitting layer  132 B is higher than the light emission start voltages of the light-emitting layer  132 R and the light-emitting layer  132 G. 
       FIG.  15    shows an area where the pixels  105 R,  105 G, and  105 B are arranged. The arrangement of the pixels  105 R,  105 G, and  105 B is the same as the arrangement of the pixels shown in  FIG.  2   . 
       FIG.  16    shows a cross-sectional view of the pixels  105 R,  105 G, and  105 B. A light-emitting element  150 R is arranged in the pixel  105 R, a light-emitting element  150 G is arranged in the pixel  105 G, and a light-emitting element  150 B is arranged in the pixel  105 B on the insulating film  122 . The light-emitting element  150 R has at least the pixel electrode  142 R, the light-emitting layer  132 R, and a counter electrode  158 . The light-emitting element  150 G has at least the pixel electrode  142 G, the light-emitting layer  132 G, and the counter electrode  158 . The light-emitting element  150 B has at least the pixel electrode  142 B, the light-emitting layer  132 B, and the counter electrode  158 . 
     The display device  100 F is different from the display device  100  in that the pixel electrodes  142 R,  142 G, and  142 B function as the cathodes and the counter electrode  158  functions as the anode. Therefore, in the present modification, the carrier absorption layer  134  is a structure having a function of suppressing the transfer of electrons by absorbing electrons. Therefore, the carrier absorption layer  134  is formed of a hole transport material. A common layer  156  arranged between the pixel electrodes  142 R,  142 G, and  142 B and the light-emitting layers  132 R,  132 G, and  132 B includes at least one of the electron-transport layer and the electron injection layer. In addition, the common layer  148  arranged between the counter electrode  158  and the light-emitting layers  132 R,  132 G, and  132 B includes at least one of the hole-transport layer and the hole injection layer. Although not shown in  FIG.  16   , each of the pixel electrodes  142 R,  142 G, and  142 B is electrically connected to the transistor  110  included in the pixel circuit. 
     The carrier absorption layer  134  is arranged at a position where the end portion of the light-emitting layer  132 B overlaps the end portion of the light-emitting layer  132 G. Specifically, the carrier absorption layer  134  includes a first portion arranged between the common layer  156  and the light-emitting layer  132 G, or a second portion arranged between the light-emitting layer  132 B and the light-emitting layer  132 G. In the carrier absorption layer  134 , the first portion and the second portion have a contiguous shape. 
     In addition, the first portion of the carrier absorption layer  134  may be arranged so as to be close to the light-emitting area (the opening  120 G) of the light-emitting element  130 G. The distance from the end portion of the opening  120 B to the end portion of the opening  120 G is d1. In this case, the end portion of the opening  120 B refers to a part in contact with the pixel electrode  124 B. In addition, the end portion of the opening  120 G refers to a part in contact with the pixel electrode  124 G. The first portion  134 - 1  of the carrier absorption layer  134  is arranged on a side closer to the opening  120 G than the intermediate part d1/2 between the end portion of the opening  120 G and the end portion of the opening  120 B. 
     In addition, the carrier absorption layer  134  is arranged at the position where the end portion of the light-emitting layer  1326  overlaps the end portion of the light-emitting layer  132 R. Specifically, the carrier absorption layer  134  includes a first portion arranged between the common layer  156  and the light-emitting layer  132 R, or a second portion arranged between the light-emitting layer  132 B and the light-emitting layer  132 R. In the carrier absorption layer  134 , the first portion and the second portion have a contiguous shape. 
     The first portion of the carrier absorption layer  134  is arranged so as to be close to the light-emitting area (the opening  120 R) of the light-emitting element  130 R. The distance from the end portion of the opening  120 B to the end portion of the opening  120 R is d2. In this case, the end portion of the opening  120 R refers to a part in contact with the pixel electrode  124 R. The first portion of the carrier absorption layer  134  is arranged on a side closer to the opening  120 R than the intermediate part d2/2 between the end portion of the opening  120 G and the end portion of the opening  120 B. 
     In the light-emitting element  130  of the display device  100 F, the pixel electrode  142  is used as a cathode and the counter electrode  158  is used as an anode. Even in this case, similar to the display device  100 , at the end portion of the light-emitting layer  132 B, the carrier absorption layer  134  can absorb the electrons by arranging the end portion of the light-emitting layer  132 B separately from the end portions of the light-emitting layers  132 R and  132 G where unintended light emission is likely to occur by the carrier absorption layer  134 , thereby preventing the electrons from moving in the thickness direction of the light-emitting layer  132 B or the transverse direction. Therefore, the strength of the leakage current in the transverse direction from the light-emitting element  130 B can be reduced at the end portion of the light-emitting layer  132 B. As a result, it is possible to suppress the occurrence of unintended light emission in the light-emitting layer  132 R or the light-emitting layer  132 G. 
     The light-emitting layer  132 B in contact with the common layer  156  including at least one of the electron-transport layer and the electron injection layer preferably includes a hole-transporting light-emitting material. When the light-emitting element  1306  emits light, it is possible to prevent the electrons in the common layer  148  from passing through the light-emitting layer  132 B in the thickness. The electrons pass through the end portion of the light-emitting layer  132 B in the transverse direction, so that the strength of the leakage current in the transverse direction can be further reduced. As a result, it is possible to suppress the occurrence of unintended light emission in the light-emitting layer  132 R or the light-emitting layer  132 G. 
     Also, in Modification 6, the carrier absorption layer  134 A described above can be arranged in place of the carrier absorption layer  134 . In the case of manufacturing the display device  100 F having the carrier absorption layer  134 A, the carrier absorption layer  134 A is arranged above the common layer  156 , and the end portion of the light-emitting layer  132 B is formed at the position corresponding to the second portion of the carrier absorption layer  134 . In the later process, the end portions of the light-emitting layers  132 R and  132 G may be formed so as to cover the position corresponding to the first portion of the carrier absorption layer  134 A and overlap the second portion of the carrier absorption layer  134  and the end portion of the light-emitting layer  1326 . 
     In addition, the configuration of the display device  100 F according to Modification 6 can be applied to the configuration according to the display devices  100 A to  100 E according to Modifications 1 to 5. In other words, in the display devices  100 A to  100 E according to Modifications 1 to 5, the pixel electrode  124  may be used as a cathode, and the counter electrode  138  may be used as an anode. In this case, the common layer arranged between the pixel electrode  124  and the light-emitting layer  132  includes at least one of the electron-transport layer and the electron injection layer. In addition, the common layer arranged between the counter electrode  138  and the light-emitting layer includes at least one of the hole-transport layer and the hole injection layer. The light-emitting layer having the highest light emission start voltage among the light-emitting layers  132 R,  132 G, and  132 B is preferably arranged above the common layer  128  including the electron-transport layer and the electron injection layer. The light-emitting layer is preferably a light-emitting material having a hole-transport property. 
     As described above, the display device according to an embodiment of the present invention can be applied to various forms. Therefore, the addition, deletion, or design change of components, or the addition, deletion, or condition change of processes as appropriate by those skilled in the art based on the display devices  100 ,  100 A to  100 F described as the embodiments and modifications of the present invention are also included in the scope of the present invention as long as they are provided with the gist of the present invention. Further, each of the embodiments described above as an embodiment of the present invention can be appropriately combined and implemented as long as no contradiction is caused. 
     Although the above-described embodiment mainly describes the display device having the organic EL element as a display element that suppresses a leakage current in the organic layer, the present invention is applicable not only to a display device but also to an optical sensor device or the like configured by arranging an organic photodiode in which an organic layer is sandwiched between electrodes in a matrix. More specifically, the present invention can be applied to an overlapping relationship of the end portions of the organic layers that are separately formed among the organic layer constituting the organic photodiode. 
     Further, it is understood that, even if the effect is different from those provided by each of the above-described embodiments, the effect obvious from the description in the specification or easily predicted by persons ordinarily skilled in the art is apparently derived from the present invention.