Display panel and electronic device

Abstract

The display panel and the electronic equipment provided by the embodiments of the present application can form at least one pair of complementary light emitting units by adjusting the arrangement positions of the light emitting units, wherein the light emitting units are of the same color and adjacent to each other. In the pair of complementary light emitting units, the orthographic projections of the first electrodes on the display panel are close to each other, and the orthographic projections of the second electrodes on the display panel are away from each other; or in the pair of complementary light emitting units, the orthographic projections of the second electrodes on the display panel are close to each other, and the orthographic projections of the first electrodes on the display panel are away from each other. In this way, the viewing angle luminance deviation of the two light emitting units in the pair of complementary light emitting units can be complementary, so as to offset the overall luminance deviation of the pair of complementary light emitting units at the same viewing angle, and improve the overall luminance uniformity of the display panel.

Description

Technical Field

[0001] This application relates to the field of display device manufacturing, and more specifically, to a display panel and an electronic device. Background Technology

[0002] With the development of display device manufacturing technology, Mini LEDs and Micro-LEDs have become widely used due to their superior advantages in brightness, resolution, contrast ratio, energy consumption, lifespan, response speed, and thermal stability. Mini LED and Micro-LED panel technology involves mass-transferring multiple tiny individual LED light-emitting units onto a driving backplane to form a display panel. However, during the fabrication of the light-emitting units, the two semiconductor layers need to be made into a stepped shape, which causes the light emitted by the light-emitting units to be blocked in certain directions, resulting in viewing angle brightness deviations and affecting the overall display effect of the panel. Summary of the Invention

[0003] In order to overcome the technical problems mentioned in the background, this application provides a display panel, which includes a plurality of light-emitting units;

[0004] The light-emitting unit includes a first electrode and a second electrode;

[0005] At least one pair of adjacent light-emitting units of the same color are complementary light-emitting units; in a pair of complementary light-emitting units, the orthographic projections of the first electrode on the display panel are close to each other, and the orthographic projections of the second electrode on the display panel are far apart from each other; or, in a pair of complementary light-emitting units, the orthographic projections of the second electrode on the display panel are close to each other, and the orthographic projections of the first electrode on the display panel are far apart from each other.

[0006] In one possible implementation, the display panel includes a plurality of light-emitting pixels, each of the light-emitting pixels including light-emitting units of different colors arranged sequentially in a first direction; in two adjacent light-emitting pixels in a second direction, the light-emitting units of the same color are complementary light-emitting units to each other.

[0007] In one possible implementation, in two adjacent light-emitting pixels in the first direction, the relative arrangement positions of the first electrode and the second electrode of the light-emitting unit of the same color are the same or different.

[0008] In one possible implementation, the display panel includes a plurality of light-emitting pixels, each of which consists of a plurality of light-emitting units arranged in an array; each row of the array includes light-emitting units of different colors arranged sequentially in a first direction; each column of the array includes at least two light-emitting units of the same color, and adjacent light-emitting units of the same color are complementary light-emitting units.

[0009] In one possible implementation, light-emitting units in the same column of the same light-emitting pixel are driven synchronously.

[0010] In one possible implementation, the light-emitting unit includes:

[0011] A first semiconductor layer, the first semiconductor layer including a first region and a second region;

[0012] The light-emitting layer located in the first region of the first semiconductor layer;

[0013] The second semiconductor layer is located on the side of the light-emitting layer away from the first semiconductor layer;

[0014] A first electrode is disposed on the side of the second region facing the second semiconductor layer; a second electrode is disposed on the side of the second semiconductor layer away from the first semiconductor layer.

[0015] In one possible implementation, the first semiconductor layer is an N-type gallium nitride layer, the second semiconductor layer is a P-type gallium nitride layer, and the light-emitting layer is a multi-quantum hydrazine layer.

[0016] In one possible implementation, the light-emitting unit is a miniature light-emitting diode.

[0017] In one possible implementation, the display panel further includes a driving backplate to which the plurality of light-emitting units are bonded.

[0018] Another object of this application is to provide an electronic device, which includes the display panel provided in this application.

[0019] The display panel and electronic device provided in this application adjust the arrangement of the light-emitting units so that adjacent light-emitting units of the same color with viewing angle brightness deviations are mirrored, forming a pair of complementary light-emitting units. This allows the viewing angle brightness deviations of the two light-emitting units in a pair of complementary light-emitting units to be complementary, thereby canceling out the overall brightness deviation of the pair of complementary light-emitting units at the same viewing angle and improving the overall brightness uniformity of the display panel. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A schematic diagram illustrating the principle behind the generation of viewing angle brightness deviation in light-emitting units;

[0022] Figure 2 This is one of the schematic diagrams showing the arrangement of light-emitting units in a display panel provided in an embodiment of this application;

[0023] Figure 3 This is a second schematic diagram of the arrangement of light-emitting units in a display panel provided in an embodiment of this application;

[0024] Figure 4 This is the third schematic diagram of the arrangement of light-emitting units in the display panel provided in the embodiments of this application;

[0025] Figure 5 This is a schematic diagram showing the arrangement of complementary light-emitting units provided in an embodiment of this application;

[0026] Figure 6 Fourth schematic diagram of the arrangement of light-emitting units of the display panel provided in the embodiments of this application;

[0027] Figure 7 Fifth schematic diagram of the arrangement of light-emitting units of the display panel provided in the embodiments of this application;

[0028] Figure 8 This is the sixth schematic diagram of the arrangement of light-emitting units in the display panel provided in the embodiments of this application;

[0029] Figure 9 This is the seventh schematic diagram of the arrangement of light-emitting units in the display panel provided in the embodiments of this application. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0032] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0033] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] It should be noted that, where there is no conflict, different features in the embodiments of this application can be combined with each other.

[0035] Please refer to Figure 1 In a Mini LED or Micro LED display panel, the light-emitting unit typically includes a first semiconductor layer 110, a second semiconductor layer 120, a light-emitting layer 130 located between the first semiconductor layer 110 and the second semiconductor layer 120, a first electrode 210 electrically connected to the first semiconductor layer 110, and a second electrode 220 electrically connected to the second semiconductor layer 120.

[0036] The first semiconductor layer 110 may include a first region and a second region. The light-emitting layer 130 is formed in the first region, and the second semiconductor layer 120 is formed on the side of the light-emitting layer 130 away from the first semiconductor layer 110. The orthogonal projections of the light-emitting layer 130 and the second semiconductor layer 120 onto the first semiconductor layer 110 do not coincide with the second region. The first electrode 210 is formed on the side of the second region facing the second semiconductor layer 120, and the second electrode 220 is formed on the side of the second semiconductor layer 120 away from the light-emitting layer 130. Optionally, the first electrode 210 may extend in a direction away from the first semiconductor layer 110 to align with the second electrode 220, for example, such that the side of the first electrode 210 away from the first semiconductor layer 110 is coplanar with the side of the second electrode 220 away from the first semiconductor layer 110.

[0037] When a certain voltage is applied to the first electrode 210 and the second electrode 220, the first semiconductor layer 110 and the second semiconductor layer 120 can respectively generate one of electrons and holes. Electrons and holes recombine in the light-emitting layer 130, thereby causing the light-emitting layer 130 to emit light. For example, the first semiconductor layer 110 can be an N-type gallium nitride layer, the second semiconductor layer 120 can be a P-type gallium nitride layer, and the light-emitting layer 130 can be a multiple quantum well (MQW) layer. It is understood that, depending on the specific material of the multiple quantum well layer, the light-emitting unit can be configured to produce light of different colors.

[0038] Please refer to this again. Figure 1 In this type of light-emitting unit structure, in order for both the first semiconductor layer 110 and the second semiconductor layer 120 to be electrically connected to corresponding contacts on the driving backplane via corresponding first electrodes 210 and second electrodes 220, the first semiconductor layer 110 needs to have a second region extending beyond the light-emitting layer 130 and the second semiconductor layer 120, thus forming a stepped shape between the first semiconductor layer 110, the light-emitting layer 130, and the second semiconductor layer 120. Figure 1 Taking the structure shown as an example, Figure 1 The light emitted from the left side of the light-emitting layer 130 of the light-emitting unit shown can be unobstructed, but Figure 1 The light emitted from the right side of the light-emitting layer 130 of the light-emitting unit is blocked by the second region of the first semiconductor layer 110, causing some of the light to be reflected and affecting the light emission effect in that direction. When a large number of light-emitting units are arranged in the same way, the brightness of the display panel in a specific direction will be less than the brightness in other directions, resulting in a viewing angle brightness deviation and affecting the overall display effect of the display panel.

[0039] In view of the research and findings on the above problems, this embodiment provides a solution that can reduce the viewing angle brightness deviation of the display panel. The solution provided in this embodiment is described in detail below.

[0040] This embodiment provides a display panel that may include multiple light-emitting units, wherein the multiple light-emitting units may include light-emitting pixels of at least three different colors (e.g., red, green, and blue). The light-emitting units may be... Figure 1 The LED light-emitting unit shown is an example of a mini LED or a micro-LED.

[0041] Optionally, the display panel further includes a driving backplane, on which the plurality of light-emitting units are bonded. The driving backplane may include a plurality of driving units, which can provide electrical power to the first and second electrodes of the light-emitting units relatively independently. The driving backplane may be, for example, a driving array substrate formed by a thin-film transistor (TFT).

[0042] In this embodiment, at least one pair of adjacent light-emitting units of the same color are complementary light-emitting units. In a pair of complementary light-emitting units, the orthographic projections of the first electrode on the display panel are close to each other, and the orthographic projections of the second electrode on the display panel are far apart; or, in a pair of complementary light-emitting units, the orthographic projections of the second electrode on the display panel are close to each other, and the orthographic projections of the first electrode on the display panel are far apart. For example, in a pair of complementary light-emitting units, the orthographic projections of the first electrode on the driving backplate are close to each other, and the orthographic projections of the second electrode on the driving backplate are far apart; or, in a pair of complementary light-emitting units, the orthographic projections of the second electrode on the display panel are close to each other, and the orthographic projections of the first electrode on the display panel are far apart. Optionally, in this embodiment, any pair of adjacent light-emitting units of the same color can be complementary light-emitting units.

[0043] For example, please refer to Figure 2 and Figure 3 As shown, Figure 2 and Figure 3 These are schematic diagrams illustrating the arrangement of light-emitting units in the display panel provided in this embodiment. Using these as examples, the light-emitting units may include a red light-emitting unit R, a green light-emitting unit G, and a blue light-emitting unit B. Taking the red light-emitting unit R as an example, the red light-emitting unit R may include a first electrode R1 and a second electrode R2. Two adjacent red light-emitting units R can be a pair of complementary light-emitting units (e.g., ...). Figure 2 and Figure 3 As shown in the dashed elliptical box, in this pair of complementary light-emitting units, it can be as follows: Figure 2 As shown, the orthographic projections of the first electrode R1 on the light-emitting surface of the display panel are close to each other, and the orthographic projections of the second electrode R2 on the light-emitting surface of the display panel are far apart from each other; or, it can be as follows: Figure 3 As shown, the orthographic projections of the second electrode R2 on the light-emitting surface of the display panel are close to each other, while the orthographic projections of the first electrode R1 on the light-emitting surface of the display panel are far apart from each other. The phrase "the orthographic projections of the first electrode R1 on the light-emitting surface of the display panel are close to each other" can mean that in a pair of complementary light-emitting units, the two first electrodes R1 are arranged adjacent to each other, and the two second electrodes are located on opposite sides of the two adjacent first electrodes R1.

[0044] Optionally, further refer to Figure 4 In this embodiment, any two adjacent red light-emitting units R can be complementary light-emitting units (e.g., Figure 4 (As shown in the dashed ellipse box). And so on. Figure 2 , Figure 3 or Figure 4 In the green and blue light-emitting units shown, the arrangement of the first and second electrodes is similar to that of the red light-emitting unit, which will not be described in detail here.

[0045] Therefore, please refer to Figure 5 In a pair of complementary light-emitting units, the parts that may cause viewing angle brightness deviation are distributed in a mirror symmetry, so that the viewing angle brightness deviation of the two light-emitting units in a pair of complementary light-emitting units is complementary, which can cancel out the brightness deviation of a pair of complementary light-emitting units at the same viewing angle, thereby improving the overall brightness uniformity of the display panel.

[0046] In one possible implementation, the display panel includes a plurality of light-emitting pixels, each of which includes light-emitting units of different colors arranged sequentially in a first direction. In two adjacent light-emitting pixels in a second direction, the light-emitting units of the same color are complementary light-emitting units to each other.

[0047] For example, please refer to Figure 6 In one possible implementation, the display panel includes a plurality of light-emitting pixels (such as...) Figure 6As shown in the larger rectangular dashed box, each of the light-emitting pixels may include red light-emitting units (including a first electrode R1 and a second electrode R2), green light-emitting units (including a first electrode G1 and a second electrode G2), and blue light-emitting units (including a first electrode B1 and a second electrode B2) arranged sequentially in a first direction. Furthermore, in a second direction, two red light-emitting units in two adjacent light-emitting pixels are complementary light-emitting units, two green light-emitting units in two adjacent light-emitting pixels are complementary light-emitting units, and two blue light-emitting units in two adjacent light-emitting pixels are complementary light-emitting units.

[0048] It should be noted that, Figure 6 The arrangement order and number of light-emitting units in the same light-emitting pixel shown are only one possibility illustrated in this embodiment. In other implementations not shown in this embodiment, the arrangement order of light-emitting units in the same light-emitting pixel can also be... Figure 6 The order in which the light-emitting units of different colors in a single light-emitting pixel are arranged along the first direction can be green, red, and blue; or, in other implementations of this embodiment, the number of light-emitting units in the same light-emitting pixel can also be the same as... Figure 6 Different, for example, a single light-emitting pixel may include four types of light-emitting units: red light-emitting units, green light-emitting units, blue light-emitting units, and white light-emitting units.

[0049] In one possible implementation, among the light-emitting pixels located in the same row in the first direction, the relative arrangement positions of the first and second electrodes of each light-emitting pixel are the same. For example, please refer again... Figure 6 , Figure 6 In each light-emitting unit of the first row of light-emitting pixels shown, the first electrode is closer to the second electrode. Figure 6 As shown below; Figure 6 In each light-emitting unit of the second row of light-emitting pixels shown, the first electrode is closer to the second electrode. Figure 6 As shown above.

[0050] In another possible implementation, while ensuring that any pair of adjacent light-emitting units of the same color can be complementary, the relative arrangement positions of the first electrode and the second electrode can also be different in light-emitting units of different colors within the same light-emitting pixel. For example, please refer to... Figure 7 Under the condition that any pair of adjacent light-emitting units of the same color can be complementary light-emitting units, located in Figure 7 In the first row and first column of the light-emitting pixels shown, the first electrode R1 of the red light-emitting unit and the blue light-emitting unit are closer to the second electrode R2. Figure 7As shown below, but in this light-emitting pixel, the first electrode G1 of the green light-emitting unit can be close to the second electrode G2. Figure 7 As shown above.

[0051] Furthermore, in one possible implementation, in two adjacent light-emitting pixels in the first direction, the relative arrangement positions of the first electrode and the second electrode of the light-emitting unit of the same color are different. For example, please refer to... Figure 8 ,lie in Figure 8 In the red light-emitting unit of the first row and first column of the light-emitting pixel shown, the first electrode R1 of the red light-emitting unit is closer to the second electrode R2. Figure 7 Below, and located Figure 8 In the red light-emitting unit of the first row and second column of the light-emitting pixel shown, the first electrode R1 of the red light-emitting unit is closer to the second electrode R2. Figure 7 As shown above. This ensures that positions where the brightness of different colored light-emitting units differ are not located in the same row. For example, assuming there is a brightness difference at one end of the first electrode R1 of the red light-emitting unit, then in Figure 7 In the first column of luminous pixels shown, the area where the red luminous units produce brightness deviations is roughly as indicated by the circular dashed box in the figure. Figure 7 In the second column of luminous pixels shown, the areas where the red luminous units exhibit brightness deviations are roughly located as indicated by the two semi-circular dashed boxes in the figure. By avoiding placing luminous units of the same color with brightness deviations in the same row, the brightness uniformity of the display panel can be further improved.

[0052] In another possible implementation, the display panel includes a plurality of light-emitting pixels, each of which consists of a plurality of light-emitting units arranged in an array. Each row of the array includes light-emitting units of different colors arranged sequentially in a first direction, and each column of the array includes at least two light-emitting units of the same color, wherein adjacent light-emitting units of the same color are complementary light-emitting units.

[0053] For example, please refer to Figure 9 The display panel includes multiple light-emitting pixels (such as...) Figure 9 As shown in the larger rectangular dashed box, each of the light-emitting pixels includes two rows of light-emitting units extending along a first direction and three columns of light-emitting units extending along a second direction. Each row includes 6 light-emitting units, arranged in a repeating pattern of red, green, and blue, and each column includes 2 light-emitting units of the same color. In the second direction, adjacent light-emitting units of the same color are complementary light-emitting units.

[0054] Furthermore, in Figure 9 In the arrangement shown, the light-emitting units in the same column of the same light-emitting pixel are driven synchronously. For example, Figure 9In the first luminescent pixel shown, two red luminescent pixels are driven synchronously. These two synchronously driven luminescent pixels can be connected to the same driving unit on the driving backplane, or different driving units on the driving backplane can drive the two luminescent pixels synchronously.

[0055] Based on the same inventive concept, this embodiment also provides an electronic device, which includes the display panel provided in this embodiment.

[0056] In summary, the display panel and electronic device provided in this application, by adjusting the arrangement of the light-emitting units, make the portions of adjacent light-emitting units of the same color with viewing angle brightness deviations mirrored, forming a pair of complementary light-emitting units. In this way, the viewing angle brightness deviations of the two light-emitting units in a pair of complementary light-emitting units become complementary, thereby canceling out the overall brightness deviation of the pair of complementary light-emitting units at the same viewing angle and improving the overall brightness uniformity of the display panel.

[0057] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A display panel, characterized in that, The display panel includes multiple light-emitting units; The light-emitting unit includes a first electrode and a second electrode; At least one pair of adjacent light-emitting units of the same color are complementary light-emitting units; in a pair of complementary light-emitting units, the orthographic projections of the first electrode on the display panel are close to each other, and the orthographic projections of the second electrode on the display panel are far apart from each other; or, In a pair of complementary light-emitting units, the orthographic projections of the second electrode on the display panel are close to each other, while the orthographic projections of the first electrode on the display panel are far apart from each other.

2. The display panel according to claim 1, characterized in that, The display panel includes a plurality of light-emitting pixels, each of which includes light-emitting units of different colors arranged sequentially in a first direction; in two adjacent light-emitting pixels in a second direction, the light-emitting units of the same color are complementary light-emitting units.

3. The display panel according to claim 2, characterized in that, In two adjacent light-emitting pixels in the first direction, the relative arrangement positions of the first electrode and the second electrode of the light-emitting unit of the same color are the same or different.

4. The display panel according to claim 1, characterized in that, The display panel includes a plurality of light-emitting pixels, each of which is composed of a plurality of light-emitting units arranged in an array; each row of the array includes light-emitting units of different colors arranged sequentially in a first direction; each column of the array includes at least two light-emitting units of the same color, and two adjacent light-emitting units of the same color are complementary light-emitting units.

5. The display panel according to claim 4, characterized in that, The light-emitting units in the same column of the same light-emitting pixel are driven synchronously.

6. The display panel according to claim 1, characterized in that, The light-emitting unit includes: A first semiconductor layer, the first semiconductor layer including a first region and a second region; The light-emitting layer located in the first region of the first semiconductor layer; The second semiconductor layer is located on the side of the light-emitting layer away from the first semiconductor layer; A first electrode is disposed on the side of the second region facing the second semiconductor layer; a second electrode is disposed on the side of the second semiconductor layer away from the first semiconductor layer.

7. The display panel according to claim 6, characterized in that, The first semiconductor layer is an N-type gallium nitride layer, the second semiconductor layer is a P-type gallium nitride layer, and the light-emitting layer is a multiple quantum hydrazine layer.

8. The display panel according to claim 6, characterized in that, The light-emitting unit is a miniature light-emitting diode.

9. The display panel according to claim 1, characterized in that, The display panel also includes a driving backplate, on which the plurality of light-emitting units are bonded.

10. An electronic device, characterized in that, The electronic device includes the display panel as described in any one of claims 1-9.

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