Display panel and display device

Abstract

The invention relates to a display panel and a display device. The display panel includes a substrate, a first common layer, a plurality of light emitting portions, and a first reaction portion. The light-emitting parts are arranged on the side, away from the substrate, of the first common layer at intervals. Any two adjacent light-emitting parts are respectively used for emitting light rays with different colors. The first reaction part is arranged between the substrate and the first common layer and is used for separating part of the two adjacent light-emitting parts; the first reaction part is used for generating excitons and quenching at least part of electrons transmitted to the first reaction part by the first common layer. Along the thickness direction of the substrate, the area enclosed by the outline of the orthographic projection of the first reaction part is located outside the area enclosed by the outline of the orthographic projection of the light-emitting part. Therefore, when the display panel is turned on, at least a part of electrons of colored light with high turning-on voltage can be quenched by excitons generated by the first reaction part in the process of transmitting the electrons to the first reaction part, so that crosstalk of light colors between adjacent light-emitting parts can be reduced.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel and a display device. Background Art

[0002] Organic Light Emitting Diode (OLED) display technology is regarded as the most promising new flat panel display technology for the next generation. Currently, the three color energy bands of red, green and blue pixels in OLED display panels are different, resulting in different turn-on voltages for the three colors of light. When a color light with a higher turn-on voltage is required, the corresponding current at this voltage will flow to other colors of light with lower voltages, causing light-color crosstalk. Summary of the invention

[0003] Based on this, it is necessary to provide a display panel and a display device that can reduce light color crosstalk.

[0004] In a first aspect, an embodiment of the present application provides a display panel, including:

[0005] substrate;

[0006] A first common layer is provided on one side of the substrate;

[0007] A plurality of light-emitting parts are arranged at intervals on a side of the first common layer away from the substrate; any two adjacent light-emitting parts are used to emit light of different colors;

[0008] The first reaction part is disposed between the substrate and the first common layer and separates two adjacent light-emitting parts; the first reaction part is used to generate excitons and quench at least part of the electrons transmitted from the first common layer to the first reaction part;

[0009] Wherein, along the thickness direction of the substrate, the area enclosed by the outline of the orthographic projection of the first reaction part is located outside the area enclosed by the outline of the orthographic projection of the light-emitting part.

[0010] The display panel provided by the embodiment of the present application has a first common layer disposed on one side of the substrate, and a plurality of light-emitting parts are arranged at intervals on the side of the first common layer away from the substrate; any two adjacent light-emitting parts are used to emit light of different colors. At the same time, the first reaction part is disposed between the substrate and the first common layer, and separates two adjacent light-emitting parts; the first reaction part is used to generate excitons, and quench at least part of the electrons transmitted from the first common layer to the first reaction part. Wherein, along the thickness direction of the substrate, the area surrounded by the outline of the positive projection of the first reaction part is located outside the area surrounded by the outline of the positive projection of the light-emitting part. The present application can quench at least part of the electrons transmitted from the first common layer to the first reaction part by the excitons generated by the first reaction part. In this way, when the display panel is turned on, when a light-emitting element with a higher turn-on voltage is required, at least part of the electrons in the light-emitting part corresponding to the light-emitting element are transmitted to the light-emitting part of the adjacent light-emitting element, and are quenched by the excitons generated by the first reaction part. In this way, the crosstalk between adjacent light-emitting parts can be reduced.

[0011] In one embodiment, the display panel further comprises:

[0012] A pixel definition layer is disposed between the substrate and the first common layer;

[0013] The pixel definition layer has a plurality of pixel openings, and the light emitting portion is located in the pixel openings;

[0014] The first reaction part has a plurality of first openings, and the first openings are connected to the pixel openings in a one-to-one correspondence;

[0015] The first reaction part is disposed between the pixel definition layer and the first common layer;

[0016] Optionally, along the thickness direction of the substrate, the outline of the orthographic projection of the first opening is located outside the outline of the pixel opening;

[0017] Optionally, along the thickness direction of the substrate, an outline of the orthographic projection of the first opening coincides with an outline of the pixel opening.

[0018] In one embodiment, the display panel further comprises:

[0019] a second common layer disposed between the first common layer and the pixel definition layer;

[0020] The first reaction part is disposed between the first common layer and the second common layer;

[0021] Optionally, the first common layer includes a hole transport layer;

[0022] Optionally, the second common layer includes a hole injection layer.

[0023] In one embodiment, the display panel further comprises:

[0024] a second common layer disposed between the first common layer and the pixel definition layer;

[0025] The first reaction part is disposed between the pixel definition layer and the second common layer;

[0026] Optionally, the display panel further includes a second reaction portion, and the second reaction portion is disposed between the first common layer and the second common layer;

[0027] Optionally, the second reaction portion has a plurality of second openings, and the second openings are connected to the pixel openings in a one-to-one correspondence;

[0028] Optionally, along the thickness direction of the substrate, the outline of the orthographic projection of the second opening is located outside the outline of the pixel opening;

[0029] Optionally, along the thickness direction of the substrate, the contour of the orthographic projection of the second opening coincides with the contour of the pixel opening;

[0030] Optionally, the first common layer includes a hole transport layer;

[0031] Optionally, the second common layer includes a hole injection layer.

[0032] In one embodiment, the thickness of the first reaction portion is a, the thickness of the first common layer is b, and the thickness of the second common layer is c;

[0033] Among them, c<a<b.

[0034] In one of the embodiments, along the thickness direction of the substrate, the pixel definition layer includes a first side wall, a second side wall, a third side wall and a fourth side wall connected to each other, the first side wall and the third side wall are both inclined to the thickness direction of the substrate, the second side wall and the fourth side wall are both perpendicular to the thickness direction of the substrate, and the distance between the fourth side wall and the substrate is smaller than the distance between the second side wall and the substrate;

[0035] Along the thickness direction of the substrate, the area enclosed by the outline of the orthographic projection of the first reaction portion is located within the area enclosed by the outline of the orthographic projection of the fourth side wall;

[0036] Optionally, along the thickness direction of the substrate, a region enclosed by an outline of an orthographic projection of the first reaction portion overlaps with a region enclosed by an outline of an orthographic projection of the second side wall.

[0037] In one embodiment, the first reaction part includes a reaction layer for generating excitons;

[0038] Optionally, the reaction layer includes a thermo-induced reaction layer for generating excitons by heating;

[0039] Optionally, the reaction layer comprises an electroreaction layer for generating excitons by energizing.

[0040] In one embodiment, the material of the first reaction part includes at least one of metal sulfide doped with ionic rare earth, magnesium tetraborate doped with rare earth element, calcium sulfate phosphor doped with manganese, calcium halophosphate phosphor and rare earth phosphor;

[0041] Optionally, the ionic rare earth material includes at least one of europium or cerium.

[0042] In one embodiment, the display panel further comprises:

[0043] The third common layer is provided on a side of the light emitting portion away from the first common layer;

[0044] Optionally, the display panel further includes:

[0045] a fourth common layer, disposed on a side of the third common layer away from the light emitting portion;

[0046] Optionally, the third common layer includes an electron transport layer;

[0047] Optionally, the fourth common layer includes an electron injection layer;

[0048] Optionally, the display panel further includes:

[0049] A first electrode is disposed between the substrate and the first common layer;

[0050] The second electrode is disposed on a side of the fourth common layer away from the third common layer.

[0051] In a second aspect, an embodiment of the present application provides a display device, comprising the display panel in the first aspect.

[0052] The display device provided in the embodiment of the present application can quench at least part of the electrons transmitted to the first reaction part from the first common layer by the excitons generated in the first reaction part. In this way, when the display panel is turned on and a light-emitting element with a higher turning-on voltage is required, at least part of the electrons in the light-emitting part corresponding to the light-emitting element are quenched by the excitons generated in the first reaction part when they are transmitted to the light-emitting part of an adjacent light-emitting element. In this way, the crosstalk between adjacent light-emitting parts can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] In order to more clearly illustrate the technical solutions in the embodiments or exemplary embodiments of the present application, the drawings required for use in the description of the embodiments or exemplary embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0054] Figure 1 A schematic diagram of the structure of a display panel provided in one embodiment of the present application.

[0055] Figure 2 Another structural schematic diagram of a display panel provided in an embodiment of the present application.

[0056] Figure 3 A schematic structural diagram of a display panel provided in an embodiment of the present application from another viewing angle.

[0057] Figure 4 for Figure 3 A local enlarged schematic diagram of point A in the middle.

[0058] Figure 5 A schematic diagram of another structure of a display panel provided in an embodiment of the present application.

[0059] Figure 6 A schematic diagram of another structure of a display panel provided in an embodiment of the present application.

[0060] Figure 7 A schematic diagram of another structure of a display panel provided in an embodiment of the present application.

[0061] Figure 8 A schematic diagram of another structure of a display panel provided in an embodiment of the present application.

[0062] Fig. 9 A schematic diagram of another structure of a display panel provided in an embodiment of the present application.

[0063] Fig.10 A schematic diagram of the structure of a display device provided in one embodiment of the present application.

[0064] Description of reference numerals:

[0065] 100. Display device; 10. Display panel; 11. Substrate; 12. First common layer; 13. Light-emitting portion; 14. First reaction portion; 141. First opening; 15. Pixel definition layer; 151. Pixel opening; 152. First side wall; 153. Second side wall; 154. Third side wall; 155. Fourth side wall; 16. Second common layer; 161. Second opening; 17. Second reaction portion; 18. Third common layer; 19. Fourth common layer; 20. First electrode; 21. Second electrode. DETAILED DESCRIPTION

[0066] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present application more thorough and comprehensive.

[0067] It should be understood that although the terms "first", "second", etc. may be used herein to describe various elements, they do not represent any order, quantity or importance, but are only used to distinguish different components. These terms are only used to distinguish one element from another element. For example, without departing from the scope of the present application, the first element may be referred to as the second element, and similarly, the second element may be referred to as the first element. "Including" or "comprising" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0068] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0069] Currently, the three-color energy bands of red, green and blue pixels in OLED display panels are different, resulting in different turn-on voltages for the three colors of light. When a color light with a higher turn-on voltage is required, the corresponding current at this voltage will flow to other colors of light with lower voltages, causing crosstalk between light and color.

[0070] It should be noted that red, green and blue pixels are sub-pixels, which are composed of small grids that display images. These small grids have a clear position and assigned color values, and the clear position is determined by the pixel arrangement, and the assigned color values ​​are determined by the pixel circuit. The color and position of these small grids determine the appearance of the displayed image. The display image of the display panel can be presented through red, green and blue sub-pixels.

[0071] Specifically, when the display panel is turned on, the turn-on voltages of the three sub-pixels of red, green and blue are different. For example, the turn-on voltage of the blue sub-pixel is the highest, and the turn-on voltage of the red sub-pixel is the lowest. At this time, the current will flow through the common layer to the red sub-pixel that requires a smaller turn-on voltage, causing the blue sub-pixel to be turned on before the red sub-pixel is turned on first, resulting in light color stealing, causing light color crosstalk, and further causing deviations in the color coordinates of monochromatic light, offsets in the color coordinates of white light, and failures in white light matching.

[0072] In particular, in the low grayscale state, the light color crosstalk problem caused by the difference in the energy bands of the three colors of light is more serious.

[0073] First, refer to Figure 1As shown, an embodiment of the present application provides a display panel 10. The display panel 10 includes a substrate 11, a first common layer 12, a plurality of light-emitting portions 13 and a first reaction portion 14. The first common layer 12 is disposed on one side of the substrate 11. The plurality of light-emitting portions 13 are arranged at intervals on the side of the first common layer 12 away from the substrate 11; any two adjacent light-emitting portions 13 are respectively used to emit light of different colors. The first reaction portion 14 is disposed between the substrate 11 and the first common layer 12, and partially separates two adjacent light-emitting portions 13; the first reaction portion 14 is used to generate excitons and quench at least part of the electrons transmitted from the first common layer 12 to the first reaction portion 14. Wherein, along the thickness direction of the substrate 11, the area enclosed by the outline of the orthographic projection of the first reaction portion 14 is located outside the area enclosed by the outline of the orthographic projection of the light-emitting portion 13.

[0074] The display panel 10 provided in the embodiment of the present application has a first common layer 12 disposed on one side of a substrate 11, and a plurality of light-emitting portions 13 arranged at intervals on the side of the first common layer 12 facing away from the substrate 11; any two adjacent light-emitting portions 13 are used to emit light of different colors. At the same time, a first reaction portion 14 is disposed between the substrate 11 and the first common layer 12, and separates two adjacent light-emitting portions 13; the first reaction portion 14 is used to generate excitons and quench at least part of the electrons transmitted from the first common layer 12 to the first reaction portion 14. In the thickness direction of the substrate 11, the area enclosed by the outline of the orthographic projection of the first reaction portion 14 is outside the area enclosed by the outline of the orthographic projection of the light-emitting portion 13. The present application can quench at least part of the electrons transmitted from the first common layer 12 to the first reaction part 14 by the excitons generated by the first reaction part 14. In this way, when the display panel 10 is turned on, when a light-emitting element with a higher turning-on voltage is required, at least part of the electrons in the light-emitting part 13 corresponding to the light-emitting element are quenched by the excitons generated by the first reaction part 14 when they are transmitted to the light-emitting part of the adjacent light-emitting element. In this way, the crosstalk between the adjacent light-emitting parts 13 can be reduced.

[0075] Here, the light emitting element refers to the entire structure consisting of the first common layer 12 , the light emitting portion 13 , the third common layer 18 , the fourth common layer 19 , the first electrode 20 , and the second electrode 21 .

[0076] Specifically, the substrate 11 is used as the main structure of the display panel 10 to provide support and fixation for other functional layers. The multiple light-emitting units 13 are used as the display structure of the display panel 10 to emit red, green and blue sub-pixels, thereby presenting the display image of the display panel 10, wherein one light-emitting unit 13 corresponds to one of the sub-pixels.

[0077] Furthermore, since the first reaction part 14 is arranged between the substrate 11 and the first common layer 12, and separates two adjacent light-emitting parts 13, when the two light-emitting parts 13 emitting light of different colors are turned on, the first reaction part 14 will generate excitons when it is turned on. At this time, the electrons in the first common layer 12 will preferentially flow to the sub-pixels that require a smaller turn-on voltage. However, in the process of electrons flowing through the first common layer 12, the excitons generated by the first reaction part 14 will react with the electrons, quenching at least part of the electrons transmitted from the first common layer 12 to the first reaction part 14.

[0078] For the convenience of description, the plurality of light-emitting units 13 are used to emit light of different colors, and any light-emitting unit 13 is used to represent any sub-pixel of the red, green and blue sub-pixels for description.

[0079] It should be noted that since the first reaction part 14 separates two adjacent light-emitting parts 13, that is, the multiple light-emitting parts 13 are arranged at intervals, in the process of turning on the display panel 10, electrons will be preferentially transmitted to the light-emitting part 13 requiring a lower voltage through the first common layer 12. At this time, the electron can be an electron transmitted from the first common layer 12 corresponding to one of the light-emitting parts 13 to the first common layer 12 corresponding to the adjacent light-emitting part 13, that is, the electron is an electron transmitted from the first common layer 12 to the first reaction part 14.

[0080] Since the first reaction part 14 generates excitons during the process of lighting up the display panel 10, the generated excitons can react with at least part of the electrons reaching there, thereby quenching at least part of the electrons there, so that the electrons corresponding to the light-emitting part 13 can only flow in the first common layer 12 corresponding to the light-emitting part 13, thereby reducing the crosstalk of light colors between adjacent light-emitting parts 13, thereby improving the display effect of the display panel 10.

[0081] In addition, since the energy of the electron-hole reaction will change and heat will be generated during the lighting process of the display panel 10, the temperature of the display panel 10 will increase. Since the excitons generated by the first reaction part 14 quench at least part of the electrons transmitted from the first common layer 12 to the first reaction part 14, the temperature of the display panel 10 can be reduced. On the one hand, the display of the display panel 10 can be maintained within a normal temperature range at all times, thereby ensuring the stability of the display effect; on the other hand, the display of the display panel 10 can be maintained within a relatively low temperature range, thereby avoiding damage to various components inside the display panel 10 due to high temperature, thereby increasing the service life of the display panel 10.

[0082] In one embodiment, referring to Figure 2 , Figure 3 and Figure 4As shown, the display panel 10 further includes a pixel definition layer 15. The pixel definition layer 15 is disposed between the substrate 11 and the first common layer 12; the pixel definition layer 15 has a plurality of pixel openings 151, and the light-emitting portion 13 is located in the pixel openings 151. The first reaction portion 14 has a plurality of first openings 141, and the first openings 141 are connected to the pixel openings 151 in a one-to-one correspondence; the first reaction portion 14 is disposed between the pixel definition layer 15 and the first common layer 12.

[0083] Thus, the pixel definition layer 15 is an important component of the display panel 10, which is used to define and limit the shape and size of the pixel, that is, the reaction part, to ensure that each light-emitting part 13 can work normally, to achieve accurate alignment and positioning of the light-emitting part 13, to ensure isolation between adjacent light-emitting parts 13, and to prevent crosstalk. At the same time, the pixel definition layer 15 can increase the aperture ratio and improve the display effect.

[0084] Furthermore, since the first reaction section 14 is disposed between the pixel definition layer 15 and the first common layer 12 , the excitons generated by the first reaction section 14 can quench at least a portion of the electrons transmitted from the first common layer 12 to the first reaction section 14 , thereby reducing the crosstalk of light colors between adjacent light-emitting sections 13 .

[0085] In one embodiment, along the thickness direction of the substrate 11 , the outline of the orthographic projection of the first opening 141 is located outside the outline of the pixel opening 151 .

[0086] In this way, the first reaction part 14 and the light-emitting part 13 are misaligned, so that the first reaction part 14 can be prevented from quenching the electrons flowing from the first common layer 12 to the light-emitting part 13 , thereby improving the display effect of the display panel 10 .

[0087] In one embodiment, along the thickness direction of the substrate 11 , the contour of the orthographic projection of the first opening 141 coincides with the contour of the pixel opening 151 .

[0088] In this way, on the one hand, the aperture ratio can be increased by the pixel definition layer 15, thereby improving the display effect of the display panel 10; on the other hand, since the contour of the positive projection of the first opening 141 coincides with the contour of the pixel opening 151, it can be ensured that the excitons generated by the first reaction part 14 and at least part of the electrons transmitted to the first reaction part 14 from the first common layer 12 have sufficient reaction area, thereby reducing the crosstalk of light colors between adjacent light-emitting parts 13.

[0089] In one embodiment, referring to Figure 5 As shown, the display panel 10 further includes a second common layer 16. The second common layer 16 is disposed between the first common layer 12 and the pixel definition layer 15. The first reaction part 14 is disposed between the first common layer 12 and the second common layer 16.

[0090] In this way, the first common layer 12 and the second common layer 16 can work together to provide more electrons or holes for the light-emitting portion 13, thereby improving the light-emitting effect of the light-emitting portion 13, and further improving the display effect of the display panel 10. At the same time, since the first reaction portion 14 is disposed between the first common layer 12 and the second common layer 16, the excitons generated by the first reaction portion 14 can quench at least part of the electrons transmitted between the first common layer 12 and the second common layer 16 to the first reaction portion 14, thereby improving the display effect of the display panel 10 while reducing the crosstalk of light colors between adjacent light-emitting portions 13.

[0091] In one embodiment, the first common layer 12 includes a hole transport layer.

[0092] Thus, the hole transport layer plays a vital role in the display panel 10. It is responsible for adjusting the injection speed and injection amount of holes, ensuring that electrons and holes are combined in the light-emitting portion 13 due to Coulomb interaction in a bound state to form excitons, which then decay and radiate photons, thereby increasing the probability of carrier radiation recombination and improving the display effect of the display panel 10.

[0093] In one embodiment, the second common layer 16 includes a hole injection layer.

[0094] Thus, the hole injection layer is an important part of the display panel 10, which is used to improve the display effect and stability of the display panel 10. Specifically, the hole injection layer refers to a layer of material in an organic polymer material for providing hole injection. It is usually composed of one or more hybrid polymers, which can effectively improve the injection efficiency of holes, and at the same time, can improve the electrical properties of organic electronic materials and protect organic light-emitting materials.

[0095] In one embodiment, referring to Figure 6 As shown, the display panel 10 further includes a second common layer 16. The second common layer 16 is disposed between the first common layer 12 and the pixel definition layer 15. The first reaction part 14 is disposed between the pixel definition layer 15 and the second common layer 16.

[0096] In this way, the first common layer 12 and the second common layer 16 can work together to provide more electrons or holes for the light-emitting portion 13, thereby improving the light-emitting effect of the light-emitting portion 13, and further improving the display effect of the display panel 10. At the same time, since the first reaction portion 14 is disposed between the pixel definition layer 15 and the second common layer 16, the excitons generated by the first reaction portion 14 can quench at least part of the electrons transmitted between the pixel definition layer 15 and the second common layer 16 to the first reaction portion 14, thereby improving the display effect of the display panel 10 while reducing the crosstalk of light colors between adjacent light-emitting portions 13.

[0097] In one embodiment, referring to Figure 7 As shown, the display panel 10 further includes a second reaction portion 17 , and the second reaction portion 17 is disposed between the first common layer 12 and the second common layer 16 .

[0098] In this way, since the second reaction part 17 is arranged between the first common layer 12 and the second common layer 16, the excitons generated by the second reaction part 17 can further quench at least part of the electrons transmitted between the first common layer 12 and the second common layer 16 to the second reaction part 17, thereby further improving the display effect of the display panel 10 while further reducing the crosstalk of light colors between adjacent light-emitting parts 13.

[0099] In one embodiment, the second reaction portion 17 has a plurality of second openings 161 , and the second openings 161 are connected to the pixel openings 151 in a one-to-one correspondence.

[0100] In this way, the second opening 161 and the pixel opening 151 can be connected to ensure normal light emission of the light emitting portion 13 , thereby ensuring normal display of the display panel 10 .

[0101] In one embodiment, along the thickness direction of the substrate 11 , the outline of the orthographic projection of the second opening 161 is located outside the outline of the pixel opening 151 .

[0102] In this way, the second reaction part 17 and the light-emitting part 13 are misaligned, so that the second reaction part 17 can be prevented from quenching the electrons flowing from the second common layer 16 to the light-emitting part 13 , thereby improving the display effect of the display panel 10 .

[0103] In one embodiment, along the thickness direction of the substrate 11 , the contour of the orthographic projection of the second opening 161 coincides with the contour of the pixel opening 151 .

[0104] In this way, on the one hand, the aperture ratio can be increased by the pixel definition layer 15, thereby improving the display effect of the display panel 10; on the other hand, since the contour of the positive projection of the second opening 161 coincides with the contour of the pixel opening 151, it can be ensured that the excitons generated by the second reaction part 17 and at least part of the electrons transmitted to the second reaction part 17 between the first common layer 12 and the second common layer 16 have sufficient reaction area, thereby reducing the crosstalk of light colors between adjacent light-emitting parts 13.

[0105] In one embodiment, the first common layer 12 includes a hole transport layer.

[0106] Thus, the hole transport layer plays a vital role in the display panel 10. It is responsible for adjusting the injection speed and injection amount of holes, ensuring that electrons and holes are combined in the light-emitting portion 13 due to Coulomb interaction in a bound state to form excitons, which then decay and radiate photons, thereby increasing the probability of carrier radiation recombination and improving the display effect of the display panel 10.

[0107] In one embodiment, the second common layer 16 includes a hole injection layer.

[0108] Thus, the hole injection layer is an important part of the display panel 10, which is used to improve the display effect and stability of the display panel 10. Specifically, the hole injection layer refers to a layer of material in an organic polymer material for providing hole injection. It is usually composed of one or more hybrid polymers, which can effectively improve the injection efficiency of holes, and at the same time, can improve the electrical properties of organic electronic materials and protect organic light-emitting materials.

[0109] In one embodiment, the thickness of the first reaction portion 14 is a, the thickness of the first common layer 12 is b, and the thickness of the second common layer 16 is c, wherein c<a<b.

[0110] In this way, when the display panel 10 is turned on, the number of electrons transmitted in the first common layer 12 is greater than the number of electrons transmitted in the second common layer 16. Since the thickness of the first reaction part 14 is greater than the thickness of the second common layer 16 and less than the thickness of the first common layer 12, on the one hand, it can ensure that the first common layer 12 and the second common layer 16 provide sufficient electrons for the light-emitting part 13, especially the first common layer 12 provides a larger number of electrons for the light-emitting part 13; on the other hand, sufficient excitons can be generated by the first reaction part 14, thereby quenching a larger number of electrons transmitted from the first common layer 12 to the first reaction part 14, thereby reducing the crosstalk of light colors between adjacent light-emitting parts 13 and improving the display effect of the display panel 10.

[0111] In one embodiment, along the thickness direction of the substrate 11, the pixel definition layer 15 includes a first side wall 152, a second side wall 153, a third side wall 154 and a fourth side wall 155 connected to each other, the first side wall 152 and the third side wall 154 are both inclined to the thickness direction of the substrate 11, the second side wall 153 and the fourth side wall 155 are both perpendicular to the thickness direction of the substrate 11, and the distance between the fourth side wall 155 and the substrate 11 is smaller than the distance between the second side wall 153 and the substrate 11. Along the thickness direction of the substrate 11, the area enclosed by the outline of the orthographic projection of the first reaction part 14 is located within the area enclosed by the outline of the orthographic projection of the fourth side wall 155.

[0112] In this way, the pixels can be commonly defined and limited by the first side wall 152, the second side wall 153, the third side wall 154 and the fourth side wall 155 and their adjacent pixel definition layer 15, and the aperture ratio can be further increased by the inclined first side wall 152 and the third side wall 154, thereby further improving the display effect of the display panel 10.

[0113] In addition, since the area enclosed by the outline of the orthographic projection of the first reaction portion 14 is located within the area enclosed by the outline of the orthographic projection of the fourth side wall 155 along the thickness direction of the substrate 11, it can be ensured that the excitons generated by the first reaction portion 14 and at least part of the electrons transmitted to the first reaction portion 14 from the first common layer 12 have sufficient reaction area, thereby further reducing the crosstalk of light colors between adjacent light-emitting portions 13.

[0114] In one embodiment, along the thickness direction of the substrate 11 , the area enclosed by the outline of the orthographic projection of the first reaction portion 14 coincides with the area enclosed by the outline of the orthographic projection of the second sidewall 153 .

[0115] In this way, since the area enclosed by the outline of the orthographic projection of the first reaction part 14 coincides with the area enclosed by the outline of the orthographic projection of the second side wall 153, the excitons generated by the first reaction part 14 can only quench at least part of the electrons transmitted from the first common layer 12 to the first reaction part 14, but will not quench at least part of the electrons transmitted from the first common layer 12 to the light-emitting part 13, thereby reducing the crosstalk of light colors between adjacent light-emitting parts 13 and improving the display effect of the display panel 10.

[0116] In one embodiment, the first reaction unit 14 includes a reaction layer for generating excitons.

[0117] Thus, when the display panel 10 is turned on, at least part of the electrons of the color light requiring a higher turning-on voltage will be quenched by the excitons generated by the first reaction part 14 during the process of being transmitted to the first reaction part 14 , thereby reducing the crosstalk of light colors between adjacent light-emitting parts 13 .

[0118] In one embodiment, the reaction layer comprises a thermal reaction layer for generating excitons by heating.

[0119] In this way, the reaction layer can generate excitons by heating, such as touching the screen, which can facilitate user operation. When the user turns on the display panel 10, excitons can be generated, thereby reducing the crosstalk of light colors between adjacent light-emitting parts 13.

[0120] In addition, since the energy of the electron-hole reaction will change during the lighting process of the display panel 10, heat will be generated, thereby causing the temperature of the display panel 10 to rise. Since the excitons generated by the first reaction part 14 quench at least part of the electrons transmitted from the first common layer 12 to the first reaction part 14, the temperature of the display panel 10 can be reduced. On the one hand, the display of the display panel 10 can be maintained within a normal temperature range, thereby ensuring the stability of the display effect; on the other hand, the display of the display panel 10 can be maintained within a relatively low temperature range, thereby avoiding damage to various components inside the display panel 10 due to high temperature, thereby improving the service life of the display panel 10. At the same time, the temperature increased when the excitons are generated can be reduced, so that the display panel 10 can be maintained within a normal temperature range, thereby improving the stability of the display panel 10.

[0121] In one embodiment, the reaction layer comprises an electro-reaction layer for generating excitons by applying electricity.

[0122] In this way, by turning on electricity, for example, when the display panel 10 is turned on, the power supply is connected, so that the reaction layer can generate excitons, which can facilitate the user's operation. When the user turns on the display panel 10, excitons can be generated, thereby reducing the crosstalk of light colors between adjacent light-emitting parts 13.

[0123] In one embodiment, the material of the first reaction part 14 includes at least one of metal sulfide doped with ionic rare earth, magnesium tetraborate doped with rare earth elements, calcium sulfate phosphor doped with manganese, calcium halophosphate phosphor and rare earth phosphor.

[0124] In this way, since metal sulfides doped with ionic rare earths, magnesium tetraborate doped with rare earth elements, manganese-doped calcium sulfate phosphors, calcium halophosphate phosphors and rare earth phosphors all have excellent performance in generating excitons upon heating, the process of generating excitons in the first reaction unit 14 can be made more stable, thereby stably reducing the crosstalk of light colors between adjacent light-emitting units 13.

[0125] In one embodiment, the ionic rare earth material includes at least one of europium or cerium.

[0126] In this way, the process of generating excitons in the first reaction unit 14 can be made more stable, so that the crosstalk of light colors between adjacent light-emitting units 13 can be stably reduced.

[0127] In one embodiment, referring to Figure 8 As shown, the display panel 10 further includes a third common layer 18 . The third common layer 18 is disposed on a side of the light emitting portion 13 away from the first common layer 12 .

[0128] In this way, the first common layer 12 and the third common layer 18 can work together to provide more electrons or holes for the light-emitting portion 13 , thereby improving the light-emitting effect of the light-emitting portion 13 and further improving the display effect of the display panel 10 .

[0129] At the same time, it should be noted that the light-emitting portion 13 needs to emit light under the joint action of electrons and holes transmitted by the first common layer 12 and the third common layer 18 under the change of energy. Since the third common layer 18 is arranged on the side of the light-emitting portion 13 away from the first common layer 12, when the third common layer 18 is transmitted to the position of the first common layer 12 corresponding to the first reaction portion 14, it still needs to react with the first common layer 12 to affect the crosstalk of light colors between adjacent light-emitting portions 13, that is, the electrons or holes in the third common layer 18 need to rely on the first common layer 12 to affect the crosstalk of light colors between adjacent light-emitting portions 13, that is, the electrons or holes in the third common layer 18 will not affect the crosstalk of light colors between adjacent light-emitting portions 13.

[0130] In one embodiment, the display panel 10 further includes a fourth common layer 19 . The fourth common layer 19 is disposed on a side of the third common layer 18 away from the light emitting portion 13 .

[0131] In this way, the first common layer 12 , the third common layer 18 and the fourth common layer 19 can work together to provide more electrons or holes for the light-emitting portion 13 , thereby improving the light-emitting effect of the light-emitting portion 13 and further improving the display effect of the display panel 10 .

[0132] Similarly, since the fourth common layer 19 is disposed on the side of the third common layer 18 away from the light-emitting portion 13 , the electrons or holes in the fourth common layer 19 will not affect the crosstalk of light colors between adjacent light-emitting portions 13 .

[0133] In one embodiment, the third common layer 18 includes an electron transport layer.

[0134] In this way, electrons and holes can be transferred to the light-emitting portion 13 through the joint action of the electron transport layer and the hole transport layer, so that the electrons and holes combine to form excitons and emit light under the change of energy. By additionally setting the electron transport layer, the electrons or holes can have stronger transmission performance, thereby improving the display effect of the display panel 10.

[0135] In one embodiment, the fourth common layer 19 includes an electron injection layer.

[0136] In this way, sufficient electrons can be injected into the electron transport layer through the electron injection layer, thereby ensuring that a sufficient number of electrons and holes are combined in the light-emitting portion 13 to form excitons, thereby further improving the display effect of the display panel 10 .

[0137] In one embodiment, referring to Fig. 9 As shown, the display panel 10 further includes a first electrode 20 . The first electrode 20 is disposed between the substrate 11 and the first common layer 12 .

[0138] In this way, the flow direction of electrons or holes in the first common layer 12 can be controlled by the first electrode 20, so that the electrons in the first common layer 12 and the third common layer 18 are transferred to the light-emitting portion 13, thereby realizing the display of the display panel 10 and enabling the display panel 10 to work normally.

[0139] The second electrode 21 is disposed on a side of the fourth common layer 19 that is away from the third common layer 18 .

[0140] In this way, the flow direction of electrons or holes in the fourth common layer 19 can be controlled by the second electrode 21, so that a complete closed circuit is formed between the first electrode 20, the first common layer 12, the second common layer 16, the light-emitting portion 13, the third common layer 18, the fourth common layer 19 and the second electrode 21, thereby realizing the display of the display panel 10 and enabling the display panel 10 to operate normally.

[0141] Second, refer to Fig.10 As shown, an embodiment of the present application provides a display device 100, including the display panel 10 in the first aspect.

[0142] The display device 100 provided in the embodiment of the present application can quench at least part of the electrons transmitted from the first common layer 12 to the first reaction part 14 by the excitons generated by the first reaction part 14. In this way, when the display panel 10 is turned on, when a light-emitting element with a higher turning-on voltage is required, at least part of the electrons in the light-emitting part 13 corresponding to the light-emitting element are transmitted to the light-emitting part of the adjacent light-emitting element and are quenched by the excitons generated by the first reaction part 14. In this way, the crosstalk between adjacent light-emitting parts 13 can be reduced.

[0143] It can be understood that the display device 100 in the embodiment of the present application can be a laptop computer, a mobile phone, a wireless device, a personal digital assistant (PDA), a handheld or portable computer, a GPS receiver / navigator, a camera, an MP4 video player, a camcorder, a game console, a watch, a clock, a calculator, a television monitor, a flat-panel display, a computer monitor, a car display (for example, an odometer display, etc.), a navigator, a cockpit controller and / or display, a display of a camera view (for example, a display of a rearview camera in a vehicle), an electronic photo, an electronic billboard or sign, a projector, etc.

[0144] In the case of using “including”, “having”, and “comprising” described herein, another component may be added unless a clear limiting term such as “only”, “consisting of”, etc. is used. Unless mentioned otherwise, a term in the singular form may include a plural form and should not be understood as being one in number.

[0145] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0146] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A display panel, characterized in that: include: substrate; A first common layer is provided on one side of the substrate; A plurality of light-emitting parts are arranged at intervals on a side of the first common layer away from the substrate; any two adjacent light-emitting parts are used to emit light of different colors; A first reaction part is provided between the substrate and the first common layer and separates two adjacent light-emitting parts; the first reaction part is used to generate excitons and quench at least part of the electrons transmitted from the first common layer to the first reaction part; Wherein, along the thickness direction of the substrate, the area enclosed by the outline of the orthographic projection of the first reaction part is located outside the area enclosed by the outline of the orthographic projection of the light-emitting part.

2. The display panel according to claim 1, characterized in that: The display panel further includes: A pixel definition layer, disposed between the substrate and the first common layer; The pixel definition layer has a plurality of pixel openings, and the light emitting portion is located in the pixel openings; The first reaction part has a plurality of first openings, and the first openings are connected to the pixel openings in a one-to-one correspondence; The first reaction part is disposed between the pixel definition layer and the first common layer; Optionally, along the thickness direction of the substrate, an outline of the orthographic projection of the first opening is located outside the outline of the pixel opening; Optionally, along the thickness direction of the substrate, an outline of the orthographic projection of the first opening coincides with an outline of the pixel opening.

3. The display panel according to claim 2, characterized in that: The display panel further includes: a second common layer disposed between the first common layer and the pixel definition layer; The first reaction part is disposed between the first common layer and the second common layer; Optionally, the first common layer includes a hole transport layer; Optionally, the second common layer includes a hole injection layer.

4. The display panel according to claim 2, characterized in that: The display panel further includes: a second common layer disposed between the first common layer and the pixel definition layer; The first reaction part is disposed between the pixel definition layer and the second common layer; Optionally, the display panel further includes a second reaction portion, and the second reaction portion is disposed between the first common layer and the second common layer; Optionally, the second reaction portion has a plurality of second openings, and the second openings are connected to the pixel openings in a one-to-one correspondence; Optionally, along the thickness direction of the substrate, an outline of the orthographic projection of the second opening is located outside the outline of the pixel opening; Optionally, along the thickness direction of the substrate, the contour of the orthographic projection of the second opening coincides with the contour of the pixel opening; Optionally, the first common layer includes a hole transport layer; Optionally, the second common layer includes a hole injection layer.

5. The display panel according to claim 4, characterized in that: The thickness of the first reaction part is a, the thickness of the first common layer is b, and the thickness of the second common layer is c; Among them, c<a<b.

6. The display panel according to claim 2, characterized in that: Along the thickness direction of the substrate, the pixel definition layer includes a first side wall, a second side wall, a third side wall and a fourth side wall connected to each other, the first side wall and the third side wall are both inclined to the thickness direction of the substrate, the second side wall and the fourth side wall are both perpendicular to the thickness direction of the substrate, and the distance between the fourth side wall and the substrate is smaller than the distance between the second side wall and the substrate; Along the thickness direction of the substrate, the area enclosed by the outline of the orthographic projection of the first reaction portion is located within the area enclosed by the outline of the orthographic projection of the fourth side wall; Optionally, along the thickness direction of the substrate, a region enclosed by an outline of an orthographic projection of the first reaction portion overlaps with a region enclosed by an outline of an orthographic projection of the second side wall.

7. The display panel according to any one of claims 1 to 6, characterized in that: The first reaction part includes a reaction layer for generating the excitons; Optionally, the reaction layer includes a thermo-induced reaction layer for generating the excitons by heating; Optionally, the reaction layer includes an electroreaction layer for generating the excitons by energizing.

8. The display panel according to any one of claims 1 to 6, characterized in that: The material of the first reaction part includes at least one of metal sulfide doped with ionic rare earth, magnesium tetraborate doped with rare earth elements, calcium sulfate phosphor doped with manganese, calcium halophosphate phosphor and rare earth phosphor; Optionally, the ionic rare earth includes at least one of europium or cerium.

9. The display panel according to any one of claims 1 to 6, characterized in that: The display panel further includes: a third common layer, disposed on a side of the light-emitting portion away from the first common layer; Optionally, the display panel further includes: a fourth common layer, disposed on a side of the third common layer away from the light-emitting portion; Optionally, the third common layer includes an electron transport layer; Optionally, the fourth common layer includes an electron injection layer; Optionally, the display panel further includes: A first electrode is disposed between the substrate and the first common layer; The second electrode is disposed on a side of the fourth common layer away from the third common layer.

10. A display device, characterized in that: A display panel comprising any one of claims 1 to 9.

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