Carrier Substrate and Display Device

Abstract

The present application relates to a carrier substrate and a display device, wherein a light-emitting device comprises a base substrate; a conductive layer, which is stacked on the base substrate; a common electrode, which is arranged on a side of the conductive layer away from the base substrate and extends along the thickness direction of the base substrate to form a columnar structure; and a plurality of light-emitting units, which are sequentially distributed along the circumference of the common electrode and connected to the conductive layer, and the plurality of light-emitting units are respectively a red light-emitting unit, a green light-emitting unit and a blue light-emitting unit. The light-emitting device comprises a plurality of light-emitting units, which share a common electrode and are directly connected through the conductive layer to form a composite light-emitting device. When transfer is required, the transfer can be performed at one time, thereby improving transfer efficiency, reducing transfer difficulty, and increasing transfer yield.

Description

Technical Field

[0001] This application relates to the field of display technologies, and in particular, to a carrier substrate and a display device. Background Art

[0002] A full-color display screen is provided with a plurality of light-emitting diodes of three colors, RGB. Each pixel combination has RGB diodes, and different full-color images are displayed by the on and off states of each group of pixel lights. A display screen for displaying various information such as text, graphics, images, animations, market quotes, videos, and video signals.

[0003] Among them, Micro Light Emitting Diode Display (abbreviated as MicroLED) and Mini LED have the advantages of high brightness, high contrast, high color gamut, high resolution, fast response time, energy saving, and low power consumption, and are favored by major manufacturers.

[0004] The RGB semiconductor light-emitting diodes in Micro LED and Mini LED need to be transferred to a printed circuit board substrate or a glass substrate for assembly to achieve full-color display.

[0005] However, for each color in each RGB semiconductor light-emitting diode, it needs to be individually aligned and transferred one by one in a limited space, which increases the difficulty of transfer and reduces the transfer efficiency and yield. Summary of the Invention

[0006] This application provides a carrier substrate and a display device, which can achieve one-time transfer, reduce the transfer difficulty, and improve the transfer efficiency and yield.

[0007] In a first aspect, this application provides a light-emitting device, including a substrate, and the light-emitting device further includes:

[0008] A conductive layer laminated on the substrate;

[0009] A common electrode disposed on a side of the conductive layer away from the substrate and extending in a thickness direction of the substrate to form a columnar structure; and

[0010] A plurality of light-emitting units sequentially distributed along a circumference of the common electrode and connected to the conductive layer, and the plurality of light-emitting units are respectively a red light-emitting unit, a green light-emitting unit, and a blue light-emitting unit.

[0011] In a possible implementation manner, the conductive layer has a first median line and a second median line perpendicular to each other;

[0012] The orthographic projection area of the red light emitting unit on the substrate is the same as that of the green light emitting unit on the substrate, and the red light emitting unit and the green light emitting unit are symmetrically arranged along the first median line;

[0013] The sum of the orthographic projection areas of the red light emitting unit and the green light emitting unit on the substrate is less than the orthographic projection area of the blue light emitting unit on the substrate, and the red light emitting unit, the green light emitting unit and the blue light emitting unit are respectively arranged on both sides of the second median line.

[0014] In a possible implementation, the light emitting unit includes a first doped layer, an electron-hole recombination layer, a second doped layer and a first electrode which are stacked in sequence;

[0015] Wherein, the first doped layer is connected to the conductive layer.

[0016] In a second aspect, the present application provides a carrier substrate provided with a receiving unit, and the receiving unit includes a plurality of receiving areas which are arranged in an array.

[0017] In a possible implementation, the receiving areas are respectively a plurality of red light receiving areas, a plurality of green light receiving areas and a plurality of blue light receiving areas;

[0018] The plurality of red light receiving areas, the plurality of green light receiving areas and the plurality of blue light receiving areas are arranged and combined in a preset manner.

[0019] In a possible implementation, among the receiving areas of the same color light, the following any one of the preset methods is selected:

[0020] Arranged along the first direction of the carrier substrate, the second direction of the carrier substrate, and the diagonal direction of the carrier substrate; wherein, the first direction and the second direction are perpendicular to each other.

[0021] In a possible implementation, the receiving unit includes a second electrode and a third electrode arranged in the receiving area;

[0022] Wherein, the lengths of the second electrodes in the plurality of receiving areas are the same, and the lengths of the third electrodes in the plurality of receiving areas are the same or different.

[0023] In a possible implementation, the second electrode is located at the center position of each receiving area.

[0024] In a possible implementation, among the receiving areas of the same color light, the lengths of the third electrodes are the same;

[0025] The lengths of the third electrodes located in the receiving areas of different color lights are different.

[0026] In a third aspect, the present application provides a display device, including a carrier substrate and a plurality of light-emitting devices as described in the first aspect arranged on the carrier substrate, wherein the carrier substrate includes a receiving unit, the receiving unit includes a plurality of receiving areas, the plurality of receiving areas are arranged in an array, and the receiving areas are connected to the light-emitting devices correspondingly;

[0027] The light emitting devices are arranged in a one-to-one correspondence with the receiving areas; and / or, one light emitting device is arranged in a corresponding correspondence with three receiving areas.

[0028] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0029] The light-emitting device provided in the embodiment of the present application includes multiple light-emitting units, which share a common electrode and are directly connected through a conductive layer to form a composite light-emitting device. When transfer is required, the transfer can be carried out at one time, thereby improving transfer efficiency, reducing transfer difficulty, and increasing transfer yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0032] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0033] Figure 1 A schematic diagram of a light emitting device provided in an embodiment of the present application;

[0034] Figure 2 for Figure 1 The schematic diagram of the aa section is shown;

[0035] Figure 3 for Figure 1 bb cross-section schematic diagram shown;

[0036] Figure 4 For Figure 1 the schematic cross-sectional view taken along line c-c shown in

[0037] Figure 5 the schematic diagram of a receiving unit provided by an embodiment of the present application;

[0038] Figure 6 the schematic diagram of a receiving unit provided by an embodiment of the present application;

[0039] Figure 7 the schematic diagram of a receiving unit provided by an embodiment of the present application.

[0040] Description of reference numerals:

[0041] 1. Substrate; 2. Conductive layer; 3. Common electrode; 31. Bonding layer; 4. Light-emitting unit; 4A. Red light-emitting unit; 4B. Green light-emitting unit; 4C. Blue light-emitting unit; 41. First doping layer; 42. Electron-hole recombination layer; 43. Second doping layer; 44. First electrode; 5. Carrier substrate; 51. Receiving unit; 511. Receiving area; 511A. Red light receiving area; 511B. Green light receiving area; 511C. Blue light receiving area; 512. Second electrode; 513. Third electrode. Detailed implementation manners

[0042] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the protection scope of the present application.

[0043] The following disclosure provides many different embodiments or examples for implementing different structures of the present invention. To simplify the disclosure of the present invention, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present invention. In addition, the present invention may repeat reference numerals and / or letters in different examples. Such repetition is for the purpose of simplification and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0044] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0045] In the related art, each color of the RGB semiconductor light emitting diode is independently formed and installed separately. For example, the color is red, green, and blue, and each color of the light emitting device needs to be transferred to a printed circuit board substrate or a glass substrate to achieve full-color display.

[0046] After completing the transfer of one color, a second and third registration transfer is required within a limited space. When transferring the other two colors in large quantities, the difficulty of the transfer is greatly increased, the efficiency and yield of the transfer are reduced, and the production cost is increased.

[0047] In order to solve the technical problems of great transfer difficulty and low transfer efficiency in related technologies, the present application provides a light-emitting device, which includes multiple light-emitting units sharing a common electrode and directly connected through a conductive layer to form a composite light-emitting device. When transfer is required, the transfer can be carried out at one time, thereby improving the transfer efficiency, reducing the difficulty of transfer, and increasing the transfer yield.

[0048] First embodiment

[0049] like Figure 1 A schematic diagram of a light emitting device is shown; Figure 2 for Figure 1 The schematic diagram of the aa section is shown; Figure 3 for Figure 1 bb cross-section schematic diagram shown; Figure 4 for Figure 1 Schematic diagram of the cc cross section shown.

[0050] An embodiment of the present application provides a light-emitting device, including a base substrate 1, a conductive layer 2, a common electrode 3 and a plurality of light-emitting units 4.

[0051] The substrate 1 can be, for example, a rigid substrate, such as a substrate made of materials like glass or sapphire. Alternatively, the substrate 1 can also be, for example, a flexible substrate, such as a substrate made of polymer materials like polyimide. The selection of the substrate 1 depends on the actual situation.

[0052] In the thickness direction of the light-emitting device, the conductive layer 2 is stacked on the substrate 1. The conductive layer 2 is made of, for example, a metal material and has a conductive function. The metal material is, for example, but not limited to copper material to make it have good conductivity.

[0053] The common electrode 3 is disposed on the side of the conductive layer 2 away from the substrate 1 and extends in the thickness direction of the substrate 1 to form a columnar structure, and is located at the center position of the conductive layer 2, serving as a conductive medium, with the same distance from adjacent light-emitting units 4, which is convenient for assembly. Among them, the common electrode 3 is, for example, a negative electrode, that is, an N electrode. The common electrode 3 is made of, for example, metal materials such as aluminum, gold, silver, magnesium-silver alloy, etc., and has good conductivity.

[0054] Of course, it can be understood that the common electrode 3 is not limited to the negative electrode and can also be a positive electrode, that is, a P electrode, depending on the actual situation. The common electrode 3 can be formed on the conductive layer 2 by, for example, deposition and etching processes. A bonding layer 31 is provided below the common electrode 3 to extend the length of the common electrode 3 and ensure the surface of the formed light-emitting device is flat.

[0055] A plurality of light-emitting units 4 are sequentially distributed along the circumference of the common electrode 3 and are connected to the conductive layer 2. The plurality of light-emitting units 4 can emit different color lights. Among them, the color lights include red, green, and blue.

[0056] In some examples, the plurality of light-emitting units 4 include a red light-emitting unit 4A, a green light-emitting unit 4B, and a blue light-emitting unit 4C that are respectively arranged at intervals. The conductive layer 2 has a first median line and a second median line that are perpendicular to each other.

[0057] The red light-emitting unit 4A and the green light-emitting unit 4B are symmetrically arranged along the first median line and are arranged at intervals, and the interval distance is greater than or equal to the width of the common electrode 3.

[0058] The red light-emitting unit 4A and the green light-emitting unit 4B are located on the same side of the blue light-emitting unit 4C, and are respectively arranged on both sides of the second median line with the blue light-emitting unit 4C. The red light-emitting unit 4A, the green light-emitting unit 4B, and the blue light-emitting unit 4C are arranged at intervals with each other, so that they do not interfere with each other, ensuring their respective light-emitting effects and effectively avoiding light mixing.

[0059] The red light emitting unit 4A, the green light emitting unit 4B and the blue light emitting unit 4C are integrally arranged to form an integral structure, enabling synchronous transfer, reducing the transfer difficulty and improving the transfer efficiency.

[0060] Among them, the orthographic projection areas of the plurality of light emitting units 4 on the substrate 1 can be the same or different.

[0061] In some examples, the orthographic projection area of the red light emitting unit 4A on the substrate 2, the orthographic projection area of the green light emitting unit 4B on the substrate 1, and the orthographic projection area of the blue light emitting unit 4C on the substrate 1 are all the same to balance the light emitting efficiency.

[0062] In other examples, the orthographic projection area of the red light emitting unit 4A on the substrate 1 is the same as that of the green light emitting unit 4B on the substrate 1. The orthographic projection area of the red light emitting unit 4A on the substrate 1 can be smaller than that of the blue light emitting unit 4C on the substrate 1, and the orthographic projection area of the green light emitting unit 4B on the substrate 1 can be smaller than that of the blue light emitting unit 4C on the substrate 1.

[0063] Or, the sum of the orthographic projection areas of the red light emitting unit 4A and the green light emitting unit 4B on the substrate 1 is smaller than the orthographic projection area of the blue light emitting unit 4C on the substrate 1. By adjusting the area ratio in the light emitting unit 4, the light emitting efficiency of the light emitting device is further adjusted. When applied to a display device, the color brightness is improved to meet the user's color requirements and enhance the user experience.

[0064] In this embodiment, as Figure 2 、 Figure 3 shown, the light emitting unit 4 includes, for example, a first doped layer 41, an electron-hole recombination layer 42, a second doped layer 43, and a first electrode 44 that are sequentially stacked. Among them, the first doped layer 41 is connected to the conductive layer 2. Among them, the first electrode 44 is, for example, a positive electrode, that is, a P electrode. Of course, it can be understood that the first electrode 44 can also be a negative electrode, specifically based on the common electrode 3.

[0065] The first doped layer 41 is, for example, an N-type doped layer, and donor impurities are doped into the semiconductor to form an N-type doped layer. The second doped layer 43 is, for example, a P-type doped layer, and acceptor impurities are doped into the semiconductor to form a P-type doped layer.

[0066] The electron-hole recombination layer 42 is used to combine with electrons in the P-type doped layer or electrons in the N-type doped layer to fill the holes in the electron-hole recombination layer 42 to achieve energy release.

[0067] The following describes how to form the light emitting unit 4 for further explanation of this embodiment.

[0068] Step S100: Provide a substrate.

[0069] Step S110: Deposit a conductive layer.

[0070] Step S120: Sequentially form a red light emitting unit, a green light emitting unit, and a blue light emitting unit on the conductive layer.

[0071] In this step, the red light emitting unit 4A is taken as an example for explanation. By means of deposition, an initial first doping layer is formed on the conductive layer 2, and part of the initial first doping layer is removed by an etching process to form a first doping layer 41.

[0072] By means of deposition, an initial electron-hole recombination layer is formed on the first doping layer 41 and the exposed conductive layer 2, and part of the initial electron-hole recombination layer is removed by an etching process to expose the conductive layer 2 and form an electron-hole recombination layer 42. Among them, the conductive layer 2 is made of a conductive material such as copper.

[0073] By means of deposition, an initial second doping layer is formed on the electron-hole recombination layer 42 and the exposed conductive layer 2, and part of the initial second doping layer is removed by an etching process to expose the conductive layer 2 and form a second doping layer 43.

[0074] By means of deposition, an initial first electrode is formed on the second doping layer 43 and the exposed conductive layer 2, and part of the initial first electrode is removed by an etching process to expose the conductive layer 2 and form a first electrode 44.

[0075] It can be understood that the preparation methods of the green light emitting unit 4B and the blue light emitting unit 4C are the same as those of the above-mentioned red light emitting unit 4A, and will not be repeated here.

[0076] For the light emitting device proposed in this application, a light emitting device includes three light emitting units, and the first electrodes are separately arranged, sharing a common electrode, being directly adjacent to and conducting with the conductive layer, and the conductive layer is directly connected and conducting with the first doping layer, realizing the integrity of the light emitting device. Among them, the area ratio of each light emitting unit can be adjusted based on the light emitting efficiency, improving the versatility of the light emitting device.

[0077] Second Embodiment

[0078] Figure 5 Schematic diagram of a carrier substrate provided by an embodiment of the present application; Figure 6 Schematic diagram of a carrier substrate provided by an embodiment of the present application; Figure 7 Schematic diagram of a carrier substrate provided by an embodiment of the present application.

[0079] An embodiment of the present application provides a carrier substrate 5 for transferring light-emitting devices to complete assembly. The carrier substrate 5 is provided with a receiving unit 51, and the receiving unit 51 includes a plurality of receiving regions 511. The plurality of receiving regions 511 are arranged in an array to implement a plurality of alignment connection positions.

[0080] In some examples, a light-emitting device can be correspondingly arranged with one receiving region 511, for example, to achieve alignment assembly. Among them, only one of the green light-emitting unit 4B, blue light-emitting unit 4C, and red light-emitting unit 4A in the light-emitting device forms an electrical connection with the receiving region 511, that is, only one color emits light.

[0081] In other examples, a light-emitting device can be correspondingly arranged with three receiving regions 511 at the same time, for example, such that the light-emitting device straddles three receiving regions 511, improving the flexibility of the light-emitting device.

[0082] In this embodiment, the plurality of receiving regions 511 are respectively a plurality of red light receiving regions 511A, a plurality of green light receiving regions 511B, and a plurality of blue light receiving regions 511C. Among them, for example, there are three red light receiving regions 511A, three green light receiving regions 511B, and three blue light receiving regions 511C.

[0083] The plurality of red light receiving regions 511A, the plurality of green light receiving regions 511B, and the plurality of blue light receiving regions 511C can be arranged and combined in a preset manner to facilitate connection with the light-emitting device and achieve the limitation of the display color.

[0084] In the first example, referring to Figure 5 as shown, among the receiving regions 511 of the same color light, the preset manner can be, for example, arranged along the first direction of the carrier substrate 5 (referring to the X-axis shown in Figure 5 ). Among them, the carrier substrate 5 is, for example, rectangular, and the first direction is, for example, vertical or horizontal.

[0085] Along the second direction, the red light receiving regions 511A, the green light receiving regions 511B, and the blue light receiving regions 511C are arranged in sequence, such that the plurality of red light receiving regions 511A are arranged in sequence along the first direction, the plurality of green light receiving regions 511B are arranged in sequence along the first direction, and the plurality of blue light receiving regions 511C are arranged in sequence along the first direction.

[0086] In the second example, referring to Figure 6 as shown, among the receiving regions 511 of the same color light, the preset manner can be, for example, arranged along the second direction of the carrier substrate 5. Among them, the carrier substrate 5 is, for example, rectangular, and the second direction is, for example, horizontal or vertical.

[0087] Its arrangement is the same as or similar to the above-mentioned arrangement along the first direction of the carrier substrate 5, and will not be repeated here. By arranging in the above two ways, the light-receiving regions 511 of the same color light are arranged on the same horizontal line along the first direction or the second direction, which is convenient for finding and repairing positions.

[0088] In the third example, referring to Figure 7 As shown, in the light-receiving region 511 of the same color light, it is arranged in a preset manner, for example, along the diagonal direction of the carrier substrate 5. Hereinafter, an example in which three light-receiving regions 511 are provided for each color will be described.

[0089] Along the diagonal direction, three red light-receiving regions 511A are arranged obliquely in sequence. On both sides of the three red light-receiving regions 511A, two green light-receiving regions 511B and two blue light-receiving regions 511C are respectively arranged. The two green light-receiving regions 511B and the two blue light-receiving regions 511C are respectively on an oblique line. The remaining one blue light-receiving region 511C is arranged at the corner of the two green light-receiving regions 511B, and the remaining one green light-receiving region 511B is arranged at the corner of the two blue light-receiving regions 511C.

[0090] By arranging in the above way, an interleaved distribution is achieved, and the whole picture will be more uniform when showing a pure color.

[0091] In this embodiment, a second electrode 512 and a third electrode 513 are provided in the light-receiving region 511. Among them, the lengths of the second electrodes 512 in the plurality of light-receiving regions 511 are the same. The second electrode 512 is, for example, a negative electrode, that is, an N electrode, which is convenient for electrically connecting to the common electrode 3 in the light-emitting device. The third electrode 513 is, for example, a positive electrode, that is, a P electrode, and is electrically connected to the first electrode 44 in the light-emitting device.

[0092] The lengths of the third electrodes 513 in the plurality of light-receiving regions 511 may be the same or different. In the light-receiving region 511 of the same color light, the lengths of the third electrodes 513 are the same, and in the light-receiving regions 511 of different color lights, the lengths of the third electrodes 513 are different.

[0093] For example, when adopting the arrangement method in the first example, referring to Figure 5 As shown, the length of the third electrode 513 in the red light-receiving region 511A is shorter, the length of the third electrode 513 in the green light-receiving region 511B is longer, and the length of the third electrode 513 in the blue light-receiving region 511C is less than the length of the third electrode 513 in the green light-receiving region 511B and greater than the length of the third electrode 513 in the red light-receiving region 511A.

[0094] Referring to Figure 5As shown, when the arrangement method in the second example is adopted, the length setting logic of the red light receiving region 511A, the green light receiving region 511B, and the blue light receiving region 511C is the same as or similar to that in the first example above, and will not be repeated here.

[0095] Referring to Figure 7 As shown, when the arrangement method in the third example is adopted, the length of the third electrode 513 in the red light receiving region 511A is short, the length of the third electrode 513 in the blue light receiving region 511C is long, and the length of the third electrode 513 in the green light receiving region 511B is less than the length of the third electrode 513 in the blue light receiving region 511C and greater than the length of the third electrode 513 in the red light receiving region 511A.

[0096] A grid structure composed of a second electrode 512 and a third electrode 513 is a receiving region 511. The common electrode 3 in the light emitting device is located at a fixed position in one of the receiving regions 511. The first electrode 44 can be located at three different positions in the same receiving region 511 or at three different positions in different receiving regions 511, making it more flexible.

[0097] When transferring the light emitting device, only the green light emitting unit 4B, the blue light emitting unit 4C, and the red light emitting unit 4A need to be transferred at one time. After the transfer, according to the characteristics of the carrier substrate 5, the first electrodes 44 of the green light emitting units 4B, the blue light emitting units 4C, and the red light emitting units 4A of different colors correspond to the third electrodes 513 in the receiving regions 511 one by one. By setting the length of the third electrode 513, the light emitting units 4 at different positions can emit corresponding color light, improving the transfer efficiency, reducing the transfer difficulty, and increasing the transfer yield. At the same time, in the display device, the pixel arrangement method is diverse. For the carrier substrate 5 in the present application, only by setting the length of the third electrode 513, the display color can be limited, and the design is simple.

[0098] Third Embodiment

[0099] As Figure 1 - Figure 7 As shown, an embodiment of the present application provides a display device, including a carrier substrate 5 and a plurality of light emitting devices as in the above embodiments. The light emitting devices are formed on the carrier substrate 5 by a one-time transfer method to complete the assembly.

[0100] In some examples, the light emitting devices can be arranged in one-to-one correspondence with the receiving regions 511 to achieve alignment and assembly. Among them, only one of the green light emitting unit 4B, the blue light emitting unit 4C, and the red light emitting unit 4A in the light emitting device is electrically connected to the receiving region 511, that is, only one color emits light.

[0101] In some other examples, a light-emitting device can be correspondingly arranged with three receiving regions 511 at the same time, such that the light-emitting device straddles the three receiving regions 511, enhancing the flexibility of the light-emitting device.

[0102] Regarding the specific structure of the carrier substrate 5 and the connection manner with the light-emitting device, the above embodiments have been described in detail, and thus will not be repeated here.

[0103] The receiving regions in this application are more flexible, are connected to the light-emitting device, have better light-emitting effects, are convenient to transfer, and effectively improve the yield during transfer.

[0104] It should be understood that the terms used herein are for the purpose of describing particular example embodiments only and are not intended to be limiting. Unless the context clearly dictates otherwise, the singular forms "a", "an", and "the" as used herein may also include the plural forms. The terms "comprising", "including", "containing", and "having" are inclusive and thus specify the presence of the stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the particular order described or illustrated, unless an execution order is explicitly stated. It should also be understood that alternative or additional steps may be used.

[0105] Although the terms first, second, third, etc. may be used herein to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or section from another. Unless the context clearly indicates otherwise, terms such as "first" and "second" and other numerical terms used herein do not imply an order or sequence. Thus, a first element, component, region, layer, or section discussed below may be referred to as a second element, component, region, layer, or section without departing from the teachings of the example embodiments.

[0106] The above description is only specific embodiments of the present invention, enabling those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A carrier substrate for transferring light-emitting devices, characterized in that the carrier substrate is provided with a receiving unit, the receiving unit includes a plurality of receiving regions, and the plurality of receiving regions are arranged in an array; one light-emitting device is correspondingly arranged with three of the receiving regions; the receiving regions are respectively a plurality of red-light receiving regions, a plurality of green-light receiving regions and a plurality of blue-light receiving regions; the plurality of red-light receiving regions, the plurality of green-light receiving regions and the plurality of blue-light receiving regions are arranged and combined in a preset manner; wherein, among the receiving regions of the same color light, the preset manner is to be arranged in the diagonal direction of the carrier substrate; the receiving unit includes a second electrode and a third electrode disposed in the receiving region; wherein, the lengths of the second electrodes in the plurality of receiving regions are the same, and among the plurality of receiving regions, the lengths of the third electrodes in the receiving regions of the same color light are the same; the lengths of the third electrodes in the receiving regions of different color lights are different; the length of the third electrode in the green-light receiving region is less than the length of the third electrode in the blue-light receiving region and greater than the length of the third electrode in the red-light receiving region.

2. The carrier substrate according to claim 1, wherein The second electrode is located at the central position of each receiving region.

3. A display device, comprising a carrier substrate as described in claim 1 or 2 and a plurality of light-emitting devices disposed on the carrier substrate, wherein, The carrier substrate includes a receiving unit, the receiving unit includes a plurality of receiving regions, the plurality of receiving regions are arranged in an array, and the receiving regions are correspondingly connected to the light-emitting devices; one light-emitting device is correspondingly arranged with three of the receiving regions; The light-emitting device includes: a substrate; a conductive layer laminated on the substrate; a common electrode disposed on the side of the conductive layer away from the substrate and extending in the thickness direction of the substrate to form a columnar structure; wherein, a bonding layer is disposed below the common electrode; and a plurality of light-emitting units are sequentially distributed along the circumference of the common electrode and are connected to the conductive layer; wherein, the plurality of light-emitting units are respectively a red-light emitting unit, a green-light emitting unit and a blue-light emitting unit; the red-light emitting unit, the green-light emitting unit and the blue-light emitting unit are integrally arranged to form an integrated structure for synchronous transfer; the conductive layer has a first median line and a second median line perpendicular to each other; the orthographic projection area of the red-light emitting unit on the substrate is the same as the orthographic projection area of the green-light emitting unit on the substrate, and the red-light emitting unit and the green-light emitting unit are symmetrically arranged along the first median line; the sum of the orthographic projection areas of the red-light emitting unit and the green-light emitting unit on the substrate is less than the orthographic projection area of the blue-light emitting unit on the substrate, and the red-light emitting unit and the green-light emitting unit are respectively arranged on both sides of the second median line; the light-emitting unit includes a first doped layer, an electron-hole recombination layer, a second doped layer and a first electrode which are sequentially laminated; wherein, the first doped layer is connected to the conductive layer.

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