Display substrate and display device

Abstract

The application discloses a display substrate and a display device. The display substrate comprises a driving back plate, a light absorption layer and a plurality of light emitting components. Light emitted by a plurality of sub-light emitting functional layers passes through a color conversion unit and is emitted as light of different colors. Since the plurality of sub-light emitting functional layers in the light emitting component are arranged in a row in a first direction, the distance of the plurality of sub-light emitting functional layers to the light absorption layer is similar in a second direction intersecting the first direction, and the light emitted by different sub-pixels is similar in the case of being absorbed by the light absorption layer, thereby reducing the difference between light of different colors, and further improving the color deviation problem.

Description

Technical Field

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

[0002] A display substrate is a structure with image display capabilities.

[0003] In the field of display technology, light-emitting diode (LED) chips have been widely used in light-emitting components due to their advantages such as pure color, wide dynamic range, high brightness, high definition, low operating voltage, low power consumption, long life, impact resistance, wide viewing angle, and stable and reliable operation.

[0004] However, in display substrates that use the aforementioned light-emitting diodes, there is a color shift problem at wide viewing angles. Summary of the Invention

[0005] This application provides a display substrate and a display device. The technical solution is as follows:

[0006] According to one aspect of this application, a display substrate is provided, comprising: a driving backplate, and a light-absorbing layer and a plurality of light-emitting components located on one side of the driving backplate;

[0007] The light-emitting component includes: a first substrate, a light-emitting unit, and a color conversion unit. The color conversion unit is located on the light-emitting side of the light-emitting unit and is closer to the first substrate than the light-emitting unit. The side of the light-emitting unit facing away from the first substrate is electrically connected to the driving backplate.

[0008] The light-emitting unit includes: a plurality of sub-light-emitting functional layers, and a first semiconductor layer located on the light-emitting side of the plurality of sub-light-emitting functional layers, wherein the plurality of sub-light-emitting functional layers are arranged in a row at intervals in a first direction parallel to the first substrate;

[0009] The light-absorbing layer covers at least a portion of the sidewall of the first substrate in the light-emitting component.

[0010] Optionally, the light-absorbing layer is distributed between any two adjacent light-emitting components, and the light-absorbing layer covers the sidewalls of the two first substrates in any two adjacent light-emitting components.

[0011] Optionally, the light-absorbing layer is also distributed on the side of the plurality of first substrates in the plurality of light-emitting components that are opposite to the driving backplate.

[0012] Optionally, the plurality of light-emitting components are arranged in multiple rows in the first direction and in multiple columns in the second direction; the second direction intersects the first direction and is parallel to the first substrate.

[0013] Optionally, each of the sub-light-emitting functional layers includes a light-emitting layer, the orthographic projection of the light-emitting layer on the first substrate having a first boundary and a second boundary disposed opposite to each other in the second direction, the first boundary of the light-emitting layer in at least a portion of the sub-light-emitting functional layers being flush with each other, and / or the second boundary of the light-emitting layer in at least a portion of the sub-light-emitting functional layers being flush with each other.

[0014] Optionally, the outer contour of the first substrate has a third boundary and a fourth boundary disposed opposite to each other in the second direction, the third boundary being adjacent to the first boundary and the fourth boundary being adjacent to the second boundary;

[0015] Wherein, at least a portion of the light-emitting functional layers have a first distance in the second direction between the first boundary and the third boundary of the light-emitting layer, and / or, at least a portion of the light-emitting functional layers have a second distance in the second direction between the second boundary and the fourth boundary of the light-emitting layer.

[0016] Optionally, the light-emitting unit further includes: an insulating protective layer located on the side of the plurality of sub-light-emitting functional layers facing away from the first semiconductor layer, and a first pin electrode and a plurality of second pin electrodes located on the side of the insulating protective layer facing away from the first semiconductor layer, wherein the first pin electrode and the plurality of second pin electrodes are electrically connected to the driving backplate.

[0017] The first semiconductor layer includes: a plurality of connection portions corresponding one-to-one with the plurality of sub-light-emitting functional layers, and auxiliary portions connected to the plurality of connection portions. The connection portions are connected to the corresponding sub-light-emitting functional layers. At least a portion of the auxiliary portions is located between adjacent connection portions. The auxiliary portions and the connection portions are integral structures.

[0018] The first pin electrode is electrically connected to the auxiliary part, and the plurality of second pin electrodes are electrically connected to the plurality of sub-light-emitting functional layers one by one.

[0019] Optionally, the plurality of sub-light-emitting functional layers include: a first sub-light-emitting functional layer, a second sub-light-emitting functional layer, and a third sub-light-emitting functional layer arranged sequentially at intervals along the first direction; the plurality of second pin electrodes are respectively: a first sub-pin electrically connected to the first sub-light-emitting functional layer, a second sub-pin electrically connected to the second sub-light-emitting functional layer, and a third sub-pin electrically connected to the first sub-light-emitting functional layer.

[0020] The first pin electrode, the first sub-pin, the second sub-pin, and the third sub-pin are arranged in two columns along the first direction and in two rows along the second direction.

[0021] Optionally, the orthographic projection of the first sub-light-emitting functional layer on the first substrate overlaps with the orthographic projection of the first sub-pin on the first substrate, and also overlaps with the orthographic projection of the second sub-pin on the first substrate, wherein the portion of the first sub-pin that overlaps with the orthographic projection of the first sub-light-emitting functional layer is electrically connected.

[0022] The orthographic projection of the third sub-light-emitting functional layer on the first substrate overlaps with the orthographic projection of the third sub-pin on the first substrate, and also overlaps with the orthographic projection of the first pin electrode on the first substrate. The portion of the third sub-pin that overlaps with the orthographic projection of the third sub-light-emitting functional layer is electrically connected.

[0023] The orthographic projection of the first pin electrode on the first substrate and the orthographic projection of the plurality of second pin electrodes on the first substrate both overlap with the orthographic projection of the auxiliary part on the first substrate, and the portion where the orthographic projection of the first pin electrode overlaps with the orthographic projection of the auxiliary part is electrically connected.

[0024] Optionally, the orthographic projection of the second sub-light-emitting functional layer on the first substrate does not coincide with the orthographic projection of the second sub-pin on the first substrate;

[0025] The light-emitting unit further includes an adapter wire, the two ends of which are electrically connected to the second sub-pin and the second sub-light-emitting functional layer, respectively.

[0026] Optionally, the orthographic projection of the second sub-light-emitting functional layer on the first substrate overlaps with the orthographic projection of the second sub-pin on the first substrate, and also overlaps with the orthographic projection of the first pin electrode on the first substrate;

[0027] The portion of the second sub-pin that overlaps with the orthographic projection of the second sub-light-emitting functional layer is electrically connected.

[0028] Optionally, in the first direction, the dimensions of the first sub-light-emitting functional layer, the second sub-light-emitting functional layer, and the third sub-light-emitting functional layer are the same;

[0029] In the second direction, the dimensions of the first sub-light-emitting functional layer, the second sub-light-emitting functional layer, and the third sub-light-emitting functional layer are the same.

[0030] Optionally, the plurality of sub-light-emitting functional layers include: a first sub-light-emitting functional layer, a second sub-light-emitting functional layer, and a third sub-light-emitting functional layer arranged sequentially at intervals along the first direction; the plurality of second pin electrodes are respectively: a first sub-pin electrically connected to the first sub-light-emitting functional layer, a second sub-pin electrically connected to the second sub-light-emitting functional layer, and a third sub-pin electrically connected to the first sub-light-emitting functional layer.

[0031] The first pin electrode, the first sub-pin, the second sub-pin, and the third sub-pin are arranged in a row at intervals along the first direction.

[0032] Optionally, the orthographic projection of the first sub-light-emitting functional layer on the first substrate overlaps with the orthographic projection of the first sub-pin on the first substrate, and the portion where the first sub-pin overlaps with the orthographic projection of the first sub-light-emitting functional layer is electrically connected.

[0033] The orthographic projection of the second sub-light-emitting functional layer on the first substrate overlaps with the orthographic projection of the second sub-pin on the first substrate, and also overlaps with the orthographic projection of the first pin electrode on the first substrate. The portion of the second sub-pin that overlaps with the orthographic projection of the second sub-light-emitting functional layer is electrically connected.

[0034] The orthographic projection of the third sub-light-emitting functional layer on the first substrate overlaps with the orthographic projection of the third sub-pin on the first substrate, and the portion of the third sub-pin that overlaps with the orthographic projection of the third sub-light-emitting functional layer is electrically connected.

[0035] The orthographic projection of the first pin electrode on the first substrate and the orthographic projection of the plurality of second pin electrodes on the first substrate both overlap with the orthographic projection of the auxiliary part on the first substrate, and the portion where the orthographic projection of the first pin electrode overlaps with the orthographic projection of the auxiliary part is electrically connected.

[0036] Optionally, in the second direction, the dimensions of the first sub-light-emitting functional layer, the second sub-light-emitting functional layer, and the third sub-light-emitting functional layer are the same;

[0037] In the first direction, the size of the second sub-light-emitting functional layer is larger than the size of the first sub-light-emitting functional layer and larger than the size of the third sub-light-emitting functional layer.

[0038] On the other hand, a display device is provided, comprising: a driving component, and a display substrate electrically connected to the driving component, wherein the display substrate is any of the aforementioned display substrates.

[0039] Optionally, the display device has a top side and a ground side that are arranged opposite to each other in the first direction.

[0040] The beneficial effects of the technical solutions provided in this application include at least the following:

[0041] In a display substrate, light emitted from multiple sub-light-emitting functional layers passes through a color conversion unit and is emitted as light of different colors. Since the multiple sub-light-emitting functional layers in the light-emitting component are arranged in a row at intervals in the first direction, the distances of the multiple sub-light-emitting functional layers relative to the light-absorbing layer are similar in the second direction intersecting the first direction. Therefore, the light emitted from different sub-pixels is absorbed by the light-absorbing layer in a similar manner, thereby reducing the difference between different colors of light and thus improving the color shift problem. Attached Figure Description

[0042] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0043] Figure 1 This is a top view of a display panel provided by related technologies;

[0044] Figure 2 yes Figure 1 A schematic diagram of the film structure of the provided display substrate at point A-A';

[0045] Figure 3 This is a top view of a display substrate provided in an embodiment of this application;

[0046] Figure 4 yes Figure 3 A partial enlarged view of region Q1 of the provided display substrate;

[0047] Figure 5 yes Figure 3 A schematic diagram of the film structure of the provided display substrate at point B-B';

[0048] Figure 6 This is a schematic diagram of another display substrate structure provided in an embodiment of this application;

[0049] Figure 7 This is a top view of a light-emitting unit located on a connecting layer, provided in an embodiment of this application;

[0050] Figure 8 yes Figure 7 A schematic diagram of the film structure of the provided light-emitting unit at C-C';

[0051] Figure 9 yes Figure 7 A schematic diagram of the film structure of the provided light-emitting unit at E-E';

[0052] Figure 10 It is a top view of another light-emitting unit located on the connection layer provided by an embodiment of the present application;

[0053] Figure 11 It is Figure 10 A schematic diagram of the film layer structure of the provided light-emitting unit at F-F';

[0054] Figure 12 It is a top view of another light-emitting unit located on the connection layer provided by an embodiment of the present application;

[0055] Figure 13 It is Figure 12 A schematic cross-sectional view of the provided light-emitting unit at G-G';

[0056] Figure 14 It is a schematic diagram of the film layer structure of another display substrate provided by an embodiment of the present application;

[0057] Figure 15 It is a schematic diagram of the structure of a display device provided by an embodiment of the present application.

[0058] Through the above-mentioned drawings, the clear embodiments of the present application have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. Detailed Embodiments

[0059] To make the purpose, technical solutions, and advantages of the present application clearer, the following will further describe the embodiments of the present application in detail with reference to the drawings.

[0060] Please refer to Figure 1 and Figure 2 , Figure 1 is a top view of a display panel provided by the related art, Figure 2 It is Figure 1 A schematic diagram of the film layer structure of the provided display substrate at A-A'. The display substrate 000 includes: a driving backplane 100, and a light-absorbing layer 200 and multiple light-emitting components 300 located on one side of the driving backplane 100. The light-emitting component 300 includes: a first substrate 310, a light-emitting unit 320, and a color conversion unit 330. In the light-emitting component 300, multiple sub-light-emitting functional layers 321 are arranged in a "pin" shape. Among them, the light emitted by the multiple sub-light-emitting functional layers 321 passes through the color conversion unit 330 and then emits light of different colors. For example, Figure 2 The light emitted by the two sub-light-emitting functional layers 321 shown passes through the color conversion unit 330 and emits red light and green light respectively.

[0061] However, the "pin" - shaped arrangement will result in different distances between multiple sub - light - emitting functional layers 321 and the boundary of the first substrate 310. Exemplarily, Figure 2 as shown in Figure 2 , the distances between the two shown sub - light - emitting functional layers 321 and the left - hand boundary of the first substrate 310 are quite different. At a large viewing angle, the situations where the light rays emitted by the two sub - light - emitting functional layers 321 are absorbed by the light - absorbing layer 200 are quite different, so the light - emitting situations of red and green light at the same large viewing angle are quite different. And there are similar situations at the boundaries on other sides, which will lead to a relatively serious color - shift problem. Figure 2 As shown in Figure 2 , for the display substrate shown, at a viewing angle of ±80 degrees, the color - shift index is greater than 0.02, and users can obviously perceive color distortion.

[0062] Embodiments of the present application provide a display substrate. Please refer to Figure 3 、 Figure 4 and Figure 5 , Figure 3 which is a top - view diagram of a display substrate provided by an embodiment of the present application. Figure 4 is Figure 3 a partial enlarged view of the Q1 area of the display substrate provided by Figure 5 is Figure 3 a schematic diagram of the film - layer structure of the display substrate provided by

[0063] The driving backplane 100 is used to carry other film layers in the display substrate 000. A driving circuit is arranged in the driving backplane 100, and this driving circuit is electrically connected to the light - emitting component 300, which can achieve the effect of driving the light - emitting component 300 to emit light.

[0064] The light - emitting component 300 includes: a first substrate 310, a light - emitting unit 320, and a color - conversion unit 330. The color - conversion unit 330 is located on the light - emitting side of the light - emitting unit 320, and the color - conversion unit 330 is closer to the first substrate 310 than the light - emitting unit 320. One side of the light - emitting unit 320 facing away from the first substrate 310 is electrically connected to the driving backplane 100. Here, the light - emitting unit 320 is located on the side of the color - conversion unit 330 facing away from the first substrate 310. The light rays emitted by the light - emitting unit 320 can be directed to the color - conversion unit 330, and then are emitted after passing through the color - conversion unit 330 and the first substrate 310.

[0065] The light-emitting unit 320 includes a plurality of sub-light-emitting functional layers 321 and a first semiconductor layer 322 located on the light-emitting side of the plurality of sub-light-emitting functional layers 321. The plurality of sub-light-emitting functional layers 321 are arranged in a row at intervals in a first direction X parallel to the first substrate 310. Here, the plurality of sub-light-emitting functional layers 321 in the light-emitting unit 320 are all used to emit a first light, which includes at least one of blue light and ultraviolet light. Under the action of the color conversion unit 320, the light-emitting component 300 can emit at least one of red light, green light, and blue light. For example, the light-emitting component 300 may have a plurality of sub-pixels, and the plurality of sub-light-emitting functional layers 321 in the light-emitting unit 320 belong to the plurality of sub-pixels respectively. The plurality of sub-pixels may include a red sub-pixel that emits red light, a green sub-pixel that emits green light, and a blue sub-pixel that emits blue light.

[0066] By arranging multiple sub-light-emitting functional layers 321 in a row, the distances between the multiple light-emitting areas and the boundary of the first substrate 310 are similar in the second direction Y. The second direction Y intersects the first direction X and is parallel to the first substrate 310. For example, the second direction Y can be a direction perpendicular to the first direction X.

[0067] The first semiconductor layer 322 can be a planar structure formed by the entire layer and can be divided into: an auxiliary part and a plurality of connecting parts, wherein the orthographic projection of the plurality of connecting parts on the first substrate 310 can respectively coincide with the orthographic projection of the plurality of sub-light-emitting functional layers 321 on the first substrate 310.

[0068] In this embodiment, the light-emitting unit 320 further includes an electrode structure disposed opposite to the first semiconductor layer 322. Here, the electrode structure is used to weld to the driving backplate 100, so that the light-emitting component 300 can be fixed on the driving backplate 100, and the driving backplate 100 can drive the light-emitting unit 320 to emit light through the electrode structure. It should be noted that the electrode structure includes the first pin electrode and the second pin electrode described in subsequent embodiments; therefore, the electrode structure will not be described in detail here.

[0069] The light-absorbing layer 200 has light-absorbing properties and can be used to absorb reflected light from the light-emitting components 300 and ambient light, thereby increasing the blackness value of the display substrate 000 and improving contrast. The light-absorbing layer 200 covers at least a portion of the sidewalls of the first substrate 310 in the light-emitting components 300. That is, the light-absorbing layer 200 is distributed between at least some adjacent light-emitting components 300. Therefore, when the wide-viewing-angle light emitted from the light-emitting components 300 reaches the boundary between the first substrate 310 and the light-absorbing layer 200, it will also be absorbed by the light-absorbing layer 200. In the second direction Y, since the distances between the multiple sub-pixels and the boundary of the first substrate 310 are similar, the light emitted by the multiple sub-pixels is absorbed by the light-absorbing layer 300 in a similar manner, thereby reducing the difference in light emission from different sub-pixels at the same wide viewing angle and improving color shift issues.

[0070] In summary, this application provides a display substrate in which light emitted from multiple sub-light-emitting functional layers is converted into different colors of light by a color conversion unit. Since the multiple sub-light-emitting functional layers in the light-emitting component are arranged in a row at intervals in the first direction, the distances of the multiple sub-light-emitting functional layers relative to the light-absorbing layer are similar in the second direction intersecting the first direction. Therefore, the absorption of light emitted from different sub-pixels by the light-absorbing layer is similar, thereby reducing the difference in colors of light and improving color shift issues.

[0071] In the embodiments of this application, please refer to Figure 4 and Figure 5 The light-absorbing layer 200 can also be used as an encapsulating adhesive to fix the light-emitting component 300 onto the driving backplate 100. The distribution of the light-absorbing layer 200 includes various situations:

[0072] In one possible implementation, the light-absorbing layer 200 may only cover a portion of the sidewalls of the first substrate 310 in the light-emitting component 300. In this way, the light-absorbing layer 200 has an absorption effect on a portion of the lateral light emitted by the light-emitting component 300.

[0073] In another possible implementation, the light-absorbing layer 200 is distributed between any two adjacent light-emitting components 300, and the light-absorbing layer 200 covers the sidewalls of the two first substrates 310 in any two adjacent light-emitting components 300. In this way, the light-absorbing layer 200 absorbs the light emitted laterally from the multiple light-emitting components 300.

[0074] In another possible implementation, please refer to Figure 6 , Figure 6This is a schematic diagram of another display substrate structure provided in an embodiment of this application. The light-absorbing layer 200 is also distributed on the side of the plurality of first substrates 310 facing away from the driving backplate 100 among the plurality of light-emitting components 300. That is, the light-absorbing layer 200 includes: a portion in contact with the sidewall of the first substrate 310, and another portion in contact with the side of the first substrate 310 facing away from the driving backplate 100.

[0075] For the distribution of these light-absorbing layers 200, by setting multiple sub-light-emitting functional layers 321 to be arranged in a row in the first direction X, the color shift problem in the second direction Y can be improved.

[0076] Since the color shift of the light-emitting component 300 is only improved in the second direction Y, while there is still a certain color shift in the first direction X, the embodiments of this application can adapt to user habits by setting the arrangement of multiple light-emitting components 300 on the driving backplate 100.

[0077] Optional, please refer to Figure 3 Multiple light-emitting components 300 are arranged in multiple rows in the first direction X and in multiple columns in the second direction Y. That is, the short side of the light-emitting component 300 can be parallel to the horizontal direction, and the long side of the light-emitting component 300 can be parallel to the vertical direction. In this way, the color shift problem of the display substrate 000 at a large viewing angle in the horizontal direction can be improved.

[0078] For a display device integrating this display substrate 000, the two sides arranged opposite each other in the first direction X can correspond to the top and bottom edges, i.e., the top and bottom bezels. Similarly, the two sides arranged opposite each other in the second direction Y can correspond to the left and right edges, i.e., the left and right bezels. By arranging the multiple sub-light-emitting functional layers 321 in the same direction as the top and bottom edges, color shift on the left and right sides of the display device can be improved. Since users frequently observe the wide viewing angles on the left and right sides in the usage scenarios of display devices, a display device integrating this display substrate 000 can better suit user habits, thereby improving the user experience.

[0079] It should be noted that the arrangement of the multiple light-emitting components 300 in this embodiment is not limited to this. Specifically, it can be adjusted according to the usage habits of the display scenario to ensure that the color shift of the wide viewing angle in the direction with higher usage frequency is improved, so as to better meet the user's habits.

[0080] In the embodiments of this application, please refer to Figure 5The light-emitting component 300 may further include a bonding layer 340, at least a portion of which may be located between the light-emitting unit 320 and the color conversion unit 330. The light-emitting unit 320 and the color conversion unit 330 in the light-emitting component 300 may be bonded together via the bonding layer 340. The first semiconductor layer 322 in the light-emitting unit 320 may be fixed to the side of the color conversion unit 330 facing away from the first substrate 310 via the bonding layer 340.

[0081] Optionally, the connecting layer 340 can be an adhesive layer, and the thickness of the connecting layer 340 can range from 10 nanometers to 50,000 nanometers. This adhesive layer can bond the color conversion unit 330 and the light-emitting unit 320 together. For example, the adhesive layer is made of an epoxy resin-based organic adhesive. Furthermore, this adhesive layer is transparent; therefore, even if the adhesive layer covers each of the sub-light-emitting functional layers 321 in the light-emitting unit 320, it can still ensure that each sub-light-emitting functional layer 321 can transmit light through the adhesive layer and project it towards the color conversion unit 330.

[0082] To see the structure of the light-emitting unit 320 more clearly, please refer to [reference needed]. Figure 7 and Figure 8 , Figure 7 This is a top view of a light-emitting unit located on the interconnect layer according to an embodiment of this application (to clearly illustrate the sub-light-emitting functional layer and the first semiconductor layer). Figure 7 An insulating protective layer is not shown, but this application does not limit the scope of the embodiments. Figure 8 yes Figure 7 A schematic diagram of the film structure of the provided light-emitting unit at C-C'. Each sub-light-emitting functional layer 321 includes a light-emitting layer 3211. The light-emitting layer 3211 can be a multiquantum well (MQW) layer, and the light-emitting layer 3211 can be connected to the first semiconductor layer 322.

[0083] Since the light-emitting layer 3211 can emit light and define the light-emitting area of ​​the sub-pixel, in an exemplary embodiment, by setting the position of the boundary of the light-emitting layer 3211, the difference in the wide-viewing-angle light emitted by different sub-pixels can be reduced, further improving the color shift problem.

[0084] The orthogonal projection of the light-emitting layer 3211 onto the first substrate 310 has a first boundary L1 and a second boundary L2 disposed opposite to each other in the second direction Y. The first boundary L1 of the light-emitting layer 3211 in at least a portion of the sub-light-emitting functional layers 321 is flush with the light-emitting layer 3211, and / or, the second boundary L2 of the light-emitting layer 3211 in at least a portion of the sub-light-emitting functional layers 321 is flush with the light-emitting layer 3211. This includes the following three cases:

[0085] In the first case, the first boundary L1 of the light-emitting layer 3211 in at least a portion of the sub-light-emitting functional layer 321 is flush with the light-emitting layer 321. In this way, the color shift problem on one side of the sub-pixel corresponding to this at least a portion of the sub-light-emitting functional layer 321 in the second direction Y can be improved.

[0086] In the second case, the second boundary L2 of the light-emitting layer 3211 in at least a portion of the sub-light-emitting functional layer 321 is flush with the light-emitting layer 321. In this way, the color shift problem on one side of the sub-pixel corresponding to this at least a portion of the sub-light-emitting functional layer 321 in the second direction Y can be improved.

[0087] In the third case, the first boundary L1 of the light-emitting layer 3211 in at least some of the sub-light-emitting functional layers 321 is flush with the second boundary L2 of the light-emitting layer 3211 in at least some of the sub-light-emitting functional layers 321. In this way, the color shift problem on both sides of the sub-pixel corresponding to these at least some sub-light-emitting functional layers 321 in the second direction Y can be improved.

[0088] It should be noted that, for Figure 4 The illustrated light-emitting unit 320 includes three sub-light-emitting functional layers 321, meaning that any two sub-light-emitting functional layers 321 satisfy the above conditions, or all three sub-light-emitting functional layers 321 satisfy the above conditions. For example, Figure 4 In the light-emitting unit 320 shown, the first boundaries L1 of the three sub-light-emitting functional layers 321 are flush, and the second boundaries L2 of the three sub-light-emitting functional layers 321 are also flush.

[0089] Optional, please refer to Figure 4 The outer contour of the first substrate 310 has a third boundary L3 and a fourth boundary L4 disposed opposite to each other in the second direction Y. The third boundary L3 is adjacent to the first boundary L1, and the fourth boundary L4 is adjacent to the second boundary L2.

[0090] Specifically, the first boundary L1 and the third boundary L3 of the light-emitting layer 321 in at least the partial light-emitting functional layer 321 are at the same first distance D1 in the second direction Y, and / or the second boundary L2 and the fourth boundary L4 of the light-emitting layer 321 in at least the partial light-emitting functional layer 321 are at the same second distance D2 in the second direction Y. This eliminates alignment errors between the light-emitting unit 320 and the color conversion unit 330, ensuring that the wide-viewing-angle light emitted from at least the partial light-emitting functional layer 321 is absorbed by the light-absorbing layer 200 in the same way, thereby further improving the color shift problem.

[0091] Furthermore, the first distance D1 and the second distance D2 can also be equal, so that the light emission of at least some of the light-emitting layers 3211 in the sub-light-emitting functional layer 321 is the same on both sides in the second direction Y, thereby improving the display effect. However, this application is not limited to this, and the first distance D1 and the second distance D2 can also be unequal to accommodate errors in the manufacturing process.

[0092] In the embodiments of this application, please refer to Figure 7 In the light-emitting unit 320, the relative positions of the boundary of the sub-light-emitting functional layer 321 and the boundary of the first semiconductor layer 322 can also be set to facilitate manufacturing.

[0093] The first semiconductor layer 322 has a fifth boundary L5 and a sixth boundary L6 disposed opposite to each other in the second direction Y when projected onto the first substrate 310. The fifth boundary L5 is adjacent to the first boundary L1, and the sixth boundary L6 is adjacent to the second boundary L2.

[0094] Wherein, at least the first boundary L1 and the fifth boundary L5 of the light-emitting layer 321 in the sub-light-emitting functional layer 321 are equal in the third distance D3 in the second direction Y, and / or, at least the second boundary L2 and the sixth boundary L6 of the light-emitting layer 321 in the sub-light-emitting functional layer 321 are equal in the fourth distance D4 in the second direction Y.

[0095] For example, the range of the third distance D3 and the fourth distance D4 can both be 10 micrometers to 30 micrometers. For instance, the third distance D3 and the fourth distance D4 can both be 20 micrometers.

[0096] Optional, please refer to Figure 5 , Figure 7 and Figure 8 Each sub-light-emitting functional layer 321 in the light-emitting unit 320 includes a current spreading layer 3213, a second semiconductor layer 3212, and a light-emitting layer 3211 stacked in a direction perpendicular to and toward the first substrate 310. That is, the light-emitting layer 3211 in the sub-light-emitting functional layer 321 is closer to the first semiconductor layer 322 than the current spreading layer 3213.

[0097] One side of the current spreading layer 3213 can contact the second semiconductor layer 3212, and the other side can connect to the second pin electrode 323. The presence of the current spreading layer 3213 in the sub-light-emitting functional layer 321 facilitates hole transport and improves the electrical performance of the light-emitting component 300. Optionally, the material of the current spreading layer 3213 in each sub-light-emitting functional layer 321 is indium tin oxide (ITO), and the thickness of the current spreading layer 3213 can range from 10 angstroms to 50,000 angstroms. The material of the second semiconductor layer 3212 in each sub-light-emitting functional layer 321 can include p-type doped gallium nitride.

[0098] The first semiconductor layer 322 in the light-emitting unit 320 may include a first sublayer 322a and a second sublayer 322b stacked along a direction perpendicular to and toward the first substrate 310. That is, the second sublayer 322b is closer to the color conversion unit 330 than the first sublayer 322a. It can be understood that the first semiconductor layer 322 can be divided into a first sublayer 322a and a second sublayer 322b in a direction perpendicular to the extension surface of the first substrate 310.

[0099] In this design, the first sub-layer 322a of the first semiconductor layer 322 can be located between the second sub-layer 322b and the light-emitting layer 3211 of each sub-light-emitting functional layer 321. That is, the first sub-layer 322a is closer to the light-emitting layer 3211 of each sub-light-emitting functional layer 322a than the second sub-layer 322b. Here, the material of the first sub-layer 322a in the first semiconductor layer 322 can be N-type doped gallium nitride, and the second sub-layer 322b in the first semiconductor layer 322 can be a gallium nitride buffer layer.

[0100] Optionally, the light-emitting unit 320 further includes: an insulating protective layer 323 located on the side of the plurality of sub-light-emitting functional layers 321 facing away from the first semiconductor layer 322, and a first pin electrode 324 and a plurality of second pin electrodes 325 located on the side of the insulating protective layer 323 facing away from the first semiconductor layer 322, wherein the first pin electrode 324 and the plurality of second pin electrodes 325 are electrically connected to the driving backplate 100. That is, the side of the first pin electrode 324 facing away from the insulating protective layer 323 is electrically connected to the driving backplate 100, and the side of the plurality of second pin electrodes 325 facing away from the insulating protective layer 323 is electrically connected to the driving backplate 100.

[0101] The first semiconductor layer 322 includes: a plurality of connection portions 3221 corresponding one-to-one with a plurality of sub-light-emitting functional layers 321, and auxiliary portions 3222 connected to the plurality of connection portions 3221. The connection portions 3221 are connected to the corresponding sub-light-emitting functional layers 321. At least a portion of the auxiliary portions 3222 is located between adjacent connection portions 3221. The auxiliary portions 3222 and the connection portions 3221 are an integral structure.

[0102] Each connection portion 3221 in the first semiconductor layer 322 can be connected to the corresponding sub-light-emitting functional layer 321, and the outer boundary of the orthogonal projection of each connection portion 3221 on the first substrate 310 can completely coincide with the outer boundary of the orthogonal projection of the corresponding sub-light-emitting functional layer 321 on the first substrate 310.

[0103] The material of the connection portion 3221 in the first semiconductor layer 322 can be the same as the material of the auxiliary portion 3222. It is understood that the plurality of connection portions 3221 and auxiliary portions 3222 in the first semiconductor layer 322 are arranged in a direction parallel to the extension surface of the first substrate 100, and the first semiconductor layer 322 is a planar structure formed as a single layer. The portion of the first semiconductor layer 322 other than the plurality of connection portions 3221 consists entirely of auxiliary portions 3222. The auxiliary portions 3222 in the first semiconductor layer 322 allow the plurality of connection portions 3221 to be connected.

[0104] In this configuration, the first pin electrode 324 is electrically connected to the auxiliary part 3222, and multiple second pin electrodes 325 are electrically connected to multiple sub-light-emitting functional layers 321 in a one-to-one correspondence. In this case, after a cathode signal is applied to the first pin electrode 324, if an anode signal is applied to the second pin electrode 325 corresponding to a certain sub-light-emitting functional layer 321, then the light-emitting layer 3211 in that sub-light-emitting functional layer 321 can emit a first light.

[0105] In this embodiment, the light-emitting unit 320 may further include a common electrode layer 327 connected to the auxiliary portion 3222 in the first semiconductor layer 322. The side of the common electrode layer 327 facing away from the first semiconductor layer 322 may overlap with the first pin electrode 324. Therefore, one side of the common electrode layer 327 may be connected to the first semiconductor layer 322, and the other side may be connected to the first pin electrode 324, thereby achieving an electrical connection between the first pin electrode 324 and the first semiconductor layer 322. Optionally, the common electrode layer 327 may include titanium aluminum nickel gold (TiAlNiAu) or chromium platinum gold (CrPtAu), and the common electrode layer 327 also has a current spreading function.

[0106] The insulating protective layer 323 may have: a first connection hole V1 corresponding to the first pin electrode 324, and a plurality of second connection holes V2 corresponding to a plurality of second pin electrodes 325. The first pin electrode 324 can be connected to the side of the common electrode layer 327 away from the first semiconductor layer 322 through the first connection hole V1. The plurality of second connection holes V2 may also correspond to a plurality of sub-light-emitting functional layers 321, and each second pin electrode 325 can be connected to the side of the current spreading layer 3213 in the corresponding sub-light-emitting functional layer 321 away from the light-emitting layer 3211 through the corresponding second connection hole V2.

[0107] For example, the material of the insulating protective layer 323 may include silicon oxide or silicon nitride. A distributed Bragg reflector mirror (DBR) structure may also be provided in the insulating protective layer 323. The DBR structure can be used to reflect the light emitted from the light-emitting layer 3211, improving the light extraction efficiency. The DBR structure may include: stacked silicon oxide and silicon nitride, or stacked silicon oxide and titanium oxide.

[0108] In the embodiments of this application, based on the arrangement of the multiple sub-light-emitting functional layers 321, there are various arrangements of the first pin electrode 324 and the multiple second pin electrodes 325. Three exemplary embodiments are described below:

[0109] In the first embodiment, please refer to Figure 7 The plurality of sub-light-emitting functional layers 321 include: a first sub-light-emitting functional layer 321a, a second sub-light-emitting functional layer 321b, and a third sub-light-emitting functional layer 321c arranged sequentially at intervals along a first direction X. The plurality of second pin electrodes 325 are respectively: a first sub-pin 325a electrically connected to the first sub-light-emitting functional layer 321a, a second sub-pin 325b electrically connected to the second sub-light-emitting functional layer 321b, and a third sub-pin 325c electrically connected to the first sub-light-emitting functional layer 321a.

[0110] The first pin electrode 324, the first sub-pin 325a, the second sub-pin 325b, and the third sub-pin 325c are arranged in two columns along the first direction X and in two rows along the second direction Y. This arrangement provides good symmetry between the first pin electrode 324 and the multiple second pin electrodes 325, and also increases the contact area with the drive backplane 100, thereby improving the bonding yield with the drive backplane 100.

[0111] Optionally, the orthographic projection of the first sub-light-emitting functional layer 321a on the first substrate 310 overlaps with the orthographic projection of the first sub-pin 325a on the first substrate 310, and also overlaps with the orthographic projection of the second sub-pin 325b on the first substrate 310. The overlapping portions of the orthographic projections of the first sub-light-emitting functional layer 321a and the first sub-pin 325a are electrically connected. In this way, the first sub-light-emitting functional layer 321a and the first sub-pin 325a can be connected through the second connection hole V2.

[0112] The orthographic projection of the third sub-light-emitting functional layer 321c on the first substrate 310 overlaps with the orthographic projection of the third sub-pin 325c on the first substrate 310, and also overlaps with the orthographic projection of the first pin electrode 324 on the first substrate 310. The overlapping portion of the orthographic projections of the third sub-light-emitting functional layer 321c is electrically connected. In this way, the third sub-light-emitting functional layer 321c and the third sub-pin 325c can be connected through the second connection hole V2.

[0113] The orthographic projections of the first pin electrode 324 on the first substrate 310 and the orthographic projections of the plurality of second pin electrodes 325 on the first substrate 310 both overlap with the orthographic projections of the auxiliary portion 3222 on the first substrate 310. The overlapping portions of the first pin electrode 324 and the orthographic projections of the auxiliary portion 3222 are electrically connected. In this way, the auxiliary portion 3222 and the first pin electrode 324 can be connected through the first connection hole V1.

[0114] Optionally, the orthographic projection of the second sub-light-emitting functional layer 321b onto the first substrate 310 does not coincide with the orthographic projection of the second sub-pin 325b onto the first substrate 310. In this case, the areas of the orthographic projections of the first pin electrode 324, the first sub-pin 325a, the second sub-pin 325b, and the third sub-pin 325c onto the first substrate 310 are approximately the same, which allows the bonding of the first pin electrode 324 and the multiple second pin electrodes 325 to be similar, but it is not possible to directly achieve a vertical connection between the second sub-light-emitting functional layer 321b and the second sub-pin 325b through the second connection hole V2.

[0115] Therefore, please refer to Figure 9 , Figure 9 yes Figure 7 A schematic diagram of the film structure of the provided light-emitting unit at E-E' is shown. The light-emitting unit 320 also includes: a connecting wire 326, the two ends of which are electrically connected to the second sub-pin 325b and the second sub-light-emitting functional layer 321b, respectively.

[0116] In this configuration, the insulating protective layer 323 may include a first sub-insulating layer 323a and a second sub-insulating layer 323b sequentially stacked along a direction perpendicular to and towards the first substrate 310. One end of the adapter cable 326 is electrically connected to the second sub-pin 325b through a via in the first sub-insulating layer 323a, and the other end of the adapter cable 326 is electrically connected to the sub-light-emitting functional layer 321b through a via in the second sub-insulating layer 323b. The first sub-insulating layer 323a protects the adapter cable 326 from water and oxygen corrosion.

[0117] In the second embodiment, please refer to Figure 10 and Figure 11 , Figure 10This is a top view of another light-emitting unit located on the interconnect layer provided in this application embodiment (to clearly illustrate the sub-light-emitting functional layer and the first semiconductor layer, Figure 10 An insulating protective layer is not shown, but this application does not limit the scope of the embodiments. Figure 11 yes Figure 10 A schematic diagram of the film structure of the provided light-emitting unit at F-F'. The first pin electrode 324, the first sub-pin 325a, the second sub-pin 325b, and the third sub-pin 325c are arranged in two columns along the first direction X and in two rows along the second direction Y.

[0118] Optionally, the orthographic projection of the second sub-light-emitting functional layer 321b on the first substrate 310 overlaps with the orthographic projection of the second sub-pin 325b on the first substrate 310, and also overlaps with the orthographic projection of the first pin electrode 324 on the first substrate 310. The portion where the orthographic projections of the second sub-pin 325b and the second sub-light-emitting functional layer 321b overlap is electrically connected. Thus, the second sub-pin 325b and the second sub-light-emitting functional layer 321b can be connected via the second connection hole V2.

[0119] In this case, compared with the first sub-pin 325a and the third sub-pin 325c, the area of ​​the second sub-pin 325b and the first pin electrode 324 projected onto the first substrate 310 is larger. This allows the second sub-light-emitting functional layer 321b and the second sub-pin 325b to be vertically connected through the second connection hole V2 while maintaining good symmetry.

[0120] Optionally, for the first and second embodiments, in the first direction X, the dimensions of the first sub-light-emitting functional layer 321a, the second sub-light-emitting functional layer 321b, and the third sub-light-emitting functional layer 321c are the same. In the second direction Y, the dimensions of the first sub-light-emitting functional layer 321a, the second sub-light-emitting functional layer 321b, and the third sub-light-emitting functional layer 321c are the same. It should be noted that the embodiments of this application do not strictly require that the dimensions be exactly the same; the same dimensions can also be approximately the same within a certain error range.

[0121] For multiple sub-light-emitting functional layers 321 of the same size, the two-row, two-column arrangement shown in the first and second embodiments can maximize the spacing between the first pin electrode 324 and multiple second pin electrodes 325 while ensuring good symmetry, so as to facilitate bonding with the driving backplane 100 and thereby improve the bonding yield.

[0122] In the third embodiment, please refer to Figure 12 and Figure 13 , Figure 12This is a top view of another light-emitting unit located on the interconnect layer provided in the embodiments of this application (to clearly illustrate the sub-light-emitting functional layer and the first semiconductor layer, Figure 12 An insulating protective layer is not shown, but this application does not limit the scope of the embodiments. Figure 13 yes Figure 12 A cross-sectional schematic diagram of the provided light-emitting unit at G-G' is shown. Multiple sub-light-emitting functional layers 321 include: a first sub-light-emitting functional layer 321a, a second sub-light-emitting functional layer 321b, and a third sub-light-emitting functional layer 321c arranged sequentially at intervals along a first direction X. Multiple second pin electrodes 325 are respectively: a first sub-pin 325a electrically connected to the first sub-light-emitting functional layer 321a, a second sub-pin 325b electrically connected to the second sub-light-emitting functional layer 321b, and a third sub-pin 325c electrically connected to the first sub-light-emitting functional layer 321a. The first pin electrode 324, the first sub-pin 325a, the second sub-pin 325b, and the third sub-pin 325c are arranged in a row at intervals along the first direction X.

[0123] Optionally, the orthographic projection of the first sub-light-emitting functional layer 321a on the first substrate 310 overlaps with the orthographic projection of the first sub-pin 325a on the first substrate 310, and the overlapping portion of the orthographic projections of the first sub-light-emitting functional layer 321a and the first sub-pin 325a is electrically connected. In this way, the first sub-light-emitting functional layer 321a and the first sub-pin 325a can be connected through the second connection hole V2.

[0124] The orthographic projection of the second sub-light-emitting functional layer 321b on the first substrate 310 overlaps with the orthographic projection of the second sub-pin 325b on the first substrate 310, and also overlaps with the orthographic projection of the first pin electrode 324 on the first substrate 310. The overlapping portion of the orthographic projections of the second sub-light-emitting functional layer 321b is electrically connected. In this way, the second sub-pin 325b and the second sub-light-emitting functional layer 321b can be connected through the second connection hole V2.

[0125] The orthographic projection of the third sub-light-emitting functional layer 321c on the first substrate 310 overlaps with the orthographic projection of the third sub-pin 325c on the first substrate 310, and the overlapping portion of the orthographic projections of the third sub-light-emitting functional layer 321c is electrically connected. Thus, the third sub-light-emitting functional layer 321c and the third sub-pin 325c can be connected via the second connection hole V2. Similarly, the auxiliary part 3222 and the first pin electrode 324 can be connected via the first connection hole V1.

[0126] The orthographic projection of the first pin electrode 324 on the first substrate 310 and the orthographic projection of the plurality of second pin electrodes 325 on the first substrate 310 overlap with the orthographic projection of the auxiliary part 3222 on the first substrate 310. The portion where the orthographic projection of the first pin electrode 324 overlaps with the orthographic projection of the auxiliary part 3222 is electrically connected.

[0127] Optionally, in the third embodiment, in the second direction Y, the dimensions of the first sub-light-emitting functional layer 321a, the second sub-light-emitting functional layer 321b, and the third sub-light-emitting functional layer 321c are the same. In the first direction X, the size of the second sub-light-emitting functional layer 321b is larger than the size of the first sub-light-emitting functional layer 321a and larger than the size of the third sub-light-emitting functional layer 321c.

[0128] Since the second sub-light-emitting functional layer 321b has the largest size in the first direction X, the first pin electrode 324 is distributed between the first sub-pin 325a and the second sub-pin 325b in the first direction X, achieving good symmetry. Furthermore, the positions of the first pin electrode 324 and the second sub-pin 325b can be interchanged; that is, the first pin electrode 324 can be distributed between the second sub-pin 325b and the third sub-pin 325c, also achieving good symmetry.

[0129] For the arrangement scheme shown in the third embodiment, while ensuring good symmetry, the spacing between the first pin electrode 324 and the multiple second pin electrodes 325 can be increased as much as possible to facilitate bonding with the drive backplane 100, thereby improving the bonding yield.

[0130] In this embodiment, the second sub-light-emitting functional layer 321b in the light-emitting unit 320 can be attributed to the green sub-pixel, the first sub-light-emitting functional layer 321a can be attributed to either the red or blue sub-pixel, and the third sub-light-emitting functional layer 321a can be attributed to the other of the red or blue sub-pixel. That is, in the first direction X, the red, green, and blue sub-pixels are arranged in a row. Thus, for Figure 12 In the illustrated embodiment, the second sub-light-emitting functional layer 321b has the largest size in the first direction X, which can increase the light-emitting area of ​​the green sub-pixel, thereby adapting to the characteristic that green light accounts for the largest proportion in white light.

[0131] Optional, please refer to Figure 14 , Figure 14 This is a schematic diagram of the film layer structure of another display substrate provided in an embodiment of this application. The color conversion unit 330 may include: a light-shielding layer 331, a limiting dam layer 332, an optical functional layer 333, a first encapsulation layer 334, a second encapsulation layer 335, and a light filter layer 336.

[0132] The light-shielding layer 331 can be located on one side of the first substrate 310, and the light-shielding layer 331 can have multiple light-transmitting holes K1. Here, the multiple light-transmitting holes K1 can correspond one-to-one with the multiple sub-light-emitting functional layers 321 in the light-emitting unit 320, and the orthographic projection of each light-transmitting hole K1 on the first substrate 310 can overlap with the orthographic projection of the corresponding sub-light-emitting functional layer 321 on the first substrate 310.

[0133] The limiting dam layer 332 can be located on the side of the light-shielding layer 331 facing away from the first substrate 310. This limiting dam layer 332 can have multiple opening regions K2 corresponding one-to-one with the multiple light-transmitting holes K1, and these opening regions K2 can also correspond one-to-one with the multiple sub-light-emitting functional layers 321 in the light-emitting unit 320. Here, the orthographic projection of each opening region K2 in the limiting dam layer 332 onto the first substrate 310 can overlap with the orthographic projection of the corresponding light-transmitting hole K1 onto the first substrate 310, and can also overlap with the orthographic projection of the corresponding sub-light-emitting functional layer 321 onto the first substrate 310.

[0134] The optical functional layer 333 may be located inside the opening region K2 of the defining dam layer 332, and at least part of the optical functional layer 333 is used to convert the color of light entering the optical functional layer 333.

[0135] Here, the portion of optical functional layer 333 corresponding to the red sub-pixel includes red quantum dots that convert the first light rays into red light; preferably, this portion may also include scattering particles for scattering light. The portion of optical functional layer 333 corresponding to the green sub-pixel includes green quantum dots that convert the first light rays into green light; preferably, this portion may also include scattering particles for scattering light. The portion of optical functional layer 333 corresponding to the blue sub-pixel is a transparent portion, or the portion of optical functional layer 333 corresponding to the blue sub-pixel includes blue quantum dots that convert the first light rays into blue light; preferably, this portion may also include scattering particles for scattering light.

[0136] The first encapsulation layer 334 can be located on the side of the limiting dam layer 332 facing away from the first substrate 310. The first encapsulation layer 334 can encapsulate the limiting dam layer 332 and the optical functional layer 333 to prevent water and oxygen in the external environment from penetrating the limiting dam layer 332 and eroding the optical functional layer 333. This ensures that the optical functional layer 333 can stably convert the color of light, resulting in high reliability of the optical functional layer 333.

[0137] The second encapsulation layer 335 can be located between the light-shielding layer 331 and the limiting dam layer 332. The second encapsulation layer 335 can encapsulate the light-shielding layer 331, so that water and oxygen in the external environment will not pass through the light-shielding layer 331 and the limiting dam layer 332 to erode the optical functional layer 333.

[0138] The filter layer 336 can be located between the second encapsulation layer 335 and the first substrate 310, and a portion of the second encapsulation layer 335 can be located within the light-transmitting aperture K1 in the light-shielding layer 331. The orthographic projection of each filter unit in the filter layer 336 onto the first substrate 310 can cover the orthographic projection of the corresponding opening region K2 in the limiting dam layer 332 onto the first substrate 310. In this way, the light emitted from the optical functional layer 333 distributed within the opening region K2 of the limiting dam layer 332 can all be directed to the corresponding filter unit in the filter layer 336, thereby ensuring that the filter unit has a good filtering effect on the light, making the color of the light emitted from the corresponding light-transmitting aperture K1 in the light-shielding layer 331 purer.

[0139] Here, the filter unit corresponding to the red sub-pixel can transmit red light and absorb other colors of light. The filter unit corresponding to the green sub-pixel can transmit green light and absorb other colors of light. The filter unit corresponding to the blue sub-pixel can transmit blue light and absorb other colors of light.

[0140] Based on the structure of the color conversion unit 330, the light emitted from the light-emitting unit 320 can be directed to the optical functional layer 333, and then the optical functional layer 333 converts the color of the light before directing it to the filter layer 336, which then filters the light before it is emitted.

[0141] In this embodiment, the color conversion unit 330 and the light-emitting unit 320 in the light-emitting component 300 are manufactured independently, and then the two are fixed together by the connecting layer 340 to obtain the light-emitting component 300.

[0142] In some examples, multiple color conversion units 330 can first be formed on a second substrate that is integral and has a large area.

[0143] Subsequently, multiple light-emitting units 320 can be formed on a third substrate (usually a sapphire substrate or a silicon substrate), and a temporary substrate can be formed on the side of the multiple third light-emitting units away from the third substrate.

[0144] Then, the third substrate is removed, and the side of the light-emitting unit 320 facing away from the temporary substrate is fixed to the side of the corresponding color conversion unit 330 facing away from the second substrate using the connecting layer 340.

[0145] Finally, after peeling off the temporary substrate and thinning the second substrate, the thinned second substrate is cut using a cutting process to obtain multiple light-emitting components 300.

[0146] In this embodiment, multiple light-emitting components 300 can be sorted and then die-bonded onto the driving backplate 100. For example, each first pin electrode 324 and second pin electrode 325 can be fixed to the driving backplate 100 by welding. Then, a light-absorbing layer 200 is formed to obtain the display substrate 000.

[0147] Optionally, the light-emitting unit 320 in the light-emitting component 300 may contain multiple light-emitting chips, and each light-emitting chip may have a sub-light-emitting functional layer 321. Here, the light-emitting chip is an LED chip. It should be noted that the LED chip can be a regular-sized LED chip, a mini light-emitting diode (MLED) chip, or a micro LED (Micro-LED) chip. This application embodiment does not limit this.

[0148] In summary, this application provides a display substrate in which light emitted from multiple sub-light-emitting functional layers is converted into different colors of light by a color conversion unit. Since the multiple sub-light-emitting functional layers in the light-emitting component are arranged in a row at intervals in the first direction, the distances of the multiple sub-light-emitting functional layers relative to the light-absorbing layer are similar in the second direction intersecting the first direction. Therefore, the absorption of light emitted from different sub-pixels by the light-absorbing layer is similar, thereby reducing the difference in colors of light and improving color shift issues.

[0149] On the other hand, this application also provides a display device, including: a driving component and a display substrate electrically connected to the driving component, wherein the display substrate is any of the display substrates provided in the above embodiments. Since this includes the display substrates provided in the above embodiments, the display substrate can also have similar effects, that is, it can improve the color shift problem.

[0150] Optional, please refer to Figure 15 , Figure 15 This is a schematic diagram of the structure of a display device provided in an embodiment of this application. The display device 400 has a top side H1 and a ground side H2 arranged opposite to each other in the first direction X. That is, the direction in which the top side H1 and the ground side H2 are arranged opposite to each other is the same as the arrangement direction of the multiple sub-light-emitting functional layers 321 in each light-emitting component 300.

[0151] When the display device 400 is in normal use and placed vertically relative to the ground, the orientation of the top side H1 and the ground side H2 can be perpendicular to the ground, with the top side being the side further away from the ground and the ground side being the side closer to the ground. At this time, the display device 400 also has a left side L3 and a right side L4 arranged opposite each other. The orientation of the left side L3 and the right side L4 can be parallel to the ground; for example, the orientation of the left side L3 and the right side L4 can be a second direction Y.

[0152] In this way, by arranging the multiple sub-light-emitting functional layers 321 in the same direction as the relative orientation of the top side H1 and the ground side H2, the color shift of the display device 400 on the left side L3 and the right side L4 can be improved. Since users observe the large viewing angles of the left side L3 and the right side L4 more frequently in the usage scenarios of the display device 400, the display device 400 integrating this display substrate 000 can better meet the user's usage habits, thereby improving the user experience.

[0153] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0154] In this application, the term "at least one of A and B" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, "at least one of A and B" can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0155] It should be noted that the dimensions of layers and regions may be exaggerated in the accompanying drawings for clarity. Furthermore, it is understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element, or there may be intermediate layers. Additionally, it is understood that when an element or layer is referred to as being "below" another element or layer, it can be directly below the other element, or there may be more than one intermediate layer or element. Furthermore, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it can be the only layer between the two layers or two elements, or there may be more than one intermediate layer or element. Similar reference numerals throughout indicate similar elements.

[0156] In this application, the terms “first,” “second,” “third,” “fourth,” “fifth,” and “sixth” are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term “multiple” means two or more, unless otherwise expressly defined.

[0157] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A display substrate, characterized in that, include: A driving backplate, and a light-absorbing layer and multiple light-emitting components located on one side of the driving backplate; The light-emitting component includes: a first substrate, a light-emitting unit, and a color conversion unit. The color conversion unit is located on the light-emitting side of the light-emitting unit and is closer to the first substrate than the light-emitting unit. The side of the light-emitting unit facing away from the first substrate is electrically connected to the driving backplate. The light-emitting unit includes: a plurality of sub-light-emitting functional layers, and a first semiconductor layer located on the light-emitting side of the plurality of sub-light-emitting functional layers, wherein the plurality of sub-light-emitting functional layers are arranged in a row at intervals in a first direction parallel to the first substrate; The light-absorbing layer covers at least a portion of the sidewall of the first substrate in the light-emitting component.

2. The display substrate according to claim 1, characterized in that, The light-absorbing layer is distributed between any two adjacent light-emitting components, and the light-absorbing layer covers the sidewalls of the two first substrates in any two adjacent light-emitting components.

3. The display substrate according to claim 2, characterized in that, The light-absorbing layer is also distributed on the side of the multiple first substrates in the multiple light-emitting components that are away from the driving backplate.

4. The display substrate according to claim 1, characterized in that, The plurality of light-emitting components are arranged in multiple rows in the first direction and in multiple columns in the second direction; the second direction intersects the first direction and is parallel to the first substrate.

5. The display substrate according to any one of claims 1 to 4, characterized in that, Each of the sub-light-emitting functional layers includes a light-emitting layer, the orthographic projection of the light-emitting layer on the first substrate having a first boundary and a second boundary disposed opposite to each other in the second direction, the first boundary of the light-emitting layer in at least a portion of the sub-light-emitting functional layers being flush with each other, and / or the second boundary of the light-emitting layer in at least a portion of the sub-light-emitting functional layers being flush with each other.

6. The display substrate according to claim 5, characterized in that, The outer contour of the first substrate has a third boundary and a fourth boundary disposed opposite to each other in the second direction, the third boundary being adjacent to the first boundary and the fourth boundary being adjacent to the second boundary; Wherein, at least a portion of the light-emitting functional layers have a first distance in the second direction between the first boundary and the third boundary of the light-emitting layer, and / or, at least a portion of the light-emitting functional layers have a second distance in the second direction between the second boundary and the fourth boundary of the light-emitting layer.

7. The display substrate according to claim 5, characterized in that, The light-emitting unit further includes: an insulating protective layer located on the side of the plurality of sub-light-emitting functional layers away from the first semiconductor layer, and a first pin electrode and a plurality of second pin electrodes located on the side of the insulating protective layer away from the first semiconductor layer, wherein the first pin electrode and the plurality of second pin electrodes are electrically connected to the driving backplate. The first semiconductor layer includes: a plurality of connection portions corresponding one-to-one with the plurality of sub-light-emitting functional layers, and auxiliary portions connected to the plurality of connection portions. The connection portions are connected to the corresponding sub-light-emitting functional layers. At least a portion of the auxiliary portions is located between adjacent connection portions. The auxiliary portions and the connection portions are integral structures. The first pin electrode is electrically connected to the auxiliary part, and the plurality of second pin electrodes are electrically connected to the plurality of sub-light-emitting functional layers one by one.

8. The display substrate according to claim 7, characterized in that, The plurality of sub-light-emitting functional layers include: a first sub-light-emitting functional layer, a second sub-light-emitting functional layer, and a third sub-light-emitting functional layer arranged at intervals along the first direction; the plurality of second pin electrodes are respectively: a first sub-pin electrically connected to the first sub-light-emitting functional layer, a second sub-pin electrically connected to the second sub-light-emitting functional layer, and a third sub-pin electrically connected to the first sub-light-emitting functional layer. The first pin electrode, the first sub-pin, the second sub-pin, and the third sub-pin are arranged in two columns along the first direction and in two rows along the second direction.

9. The display substrate according to claim 8, characterized in that, The orthographic projection of the first sub-light-emitting functional layer on the first substrate overlaps with the orthographic projection of the first sub-pin on the first substrate, and also overlaps with the orthographic projection of the second sub-pin on the first substrate. The portion of the first sub-pin that overlaps with the orthographic projection of the first sub-light-emitting functional layer is electrically connected. The orthographic projection of the third sub-light-emitting functional layer on the first substrate overlaps with the orthographic projection of the third sub-pin on the first substrate, and also overlaps with the orthographic projection of the first pin electrode on the first substrate. The portion of the third sub-pin that overlaps with the orthographic projection of the third sub-light-emitting functional layer is electrically connected. The orthographic projection of the first pin electrode on the first substrate and the orthographic projection of the plurality of second pin electrodes on the first substrate both overlap with the orthographic projection of the auxiliary part on the first substrate, and the portion where the orthographic projection of the first pin electrode overlaps with the orthographic projection of the auxiliary part is electrically connected.

10. The display substrate according to claim 9, characterized in that, The orthographic projection of the second sub-light-emitting functional layer on the first substrate does not coincide with the orthographic projection of the second sub-pin on the first substrate; The light-emitting unit further includes an adapter wire, the two ends of which are electrically connected to the second sub-pin and the second sub-light-emitting functional layer, respectively.

11. The display substrate according to claim 9, characterized in that, The orthographic projection of the second sub-light-emitting functional layer on the first substrate overlaps with the orthographic projection of the second sub-pin on the first substrate, and also overlaps with the orthographic projection of the first pin electrode on the first substrate; The portion of the second sub-pin that overlaps with the orthographic projection of the second sub-light-emitting functional layer is electrically connected.

12. The display substrate according to any one of claims 8 to 11, characterized in that, In the first direction, the dimensions of the first sub-light-emitting functional layer, the second sub-light-emitting functional layer, and the third sub-light-emitting functional layer are the same; In the second direction, the dimensions of the first sub-light-emitting functional layer, the second sub-light-emitting functional layer, and the third sub-light-emitting functional layer are the same.

13. The display substrate according to claim 7, characterized in that, The plurality of sub-light-emitting functional layers include: a first sub-light-emitting functional layer, a second sub-light-emitting functional layer, and a third sub-light-emitting functional layer arranged at intervals along the first direction; the plurality of second pin electrodes are respectively: a first sub-pin electrically connected to the first sub-light-emitting functional layer, a second sub-pin electrically connected to the second sub-light-emitting functional layer, and a third sub-pin electrically connected to the first sub-light-emitting functional layer. The first pin electrode, the first sub-pin, the second sub-pin, and the third sub-pin are arranged in a row at intervals along the first direction.

14. The display substrate according to claim 13, characterized in that, The orthographic projection of the first sub-light-emitting functional layer on the first substrate overlaps with the orthographic projection of the first sub-pin on the first substrate, and the portion of the first sub-pin that overlaps with the orthographic projection of the first sub-light-emitting functional layer is electrically connected. The orthographic projection of the second sub-light-emitting functional layer on the first substrate overlaps with the orthographic projection of the second sub-pin on the first substrate, and also overlaps with the orthographic projection of the first pin electrode on the first substrate. The portion of the second sub-pin that overlaps with the orthographic projection of the second sub-light-emitting functional layer is electrically connected. The orthographic projection of the third sub-light-emitting functional layer on the first substrate overlaps with the orthographic projection of the third sub-pin on the first substrate, and the portion of the third sub-pin that overlaps with the orthographic projection of the third sub-light-emitting functional layer is electrically connected. The orthographic projection of the first pin electrode on the first substrate and the orthographic projection of the plurality of second pin electrodes on the first substrate both overlap with the orthographic projection of the auxiliary part on the first substrate, and the portion where the orthographic projection of the first pin electrode overlaps with the orthographic projection of the auxiliary part is electrically connected.

15. The display substrate according to any one of claims 13 to 14, characterized in that, In the second direction, the dimensions of the first sub-light-emitting functional layer, the second sub-light-emitting functional layer, and the third sub-light-emitting functional layer are the same; In the first direction, the size of the second sub-light-emitting functional layer is larger than the size of the first sub-light-emitting functional layer and larger than the size of the third sub-light-emitting functional layer.

16. A display device, characterized in that, include: A driving component, and a display substrate electrically connected to the driving component, wherein the display substrate is the display substrate according to any one of claims 1 to 15.

17. The display device according to claim 16, characterized in that, The display device has a top side and a ground side that are arranged opposite to each other in the first direction.

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