Display panel and electronic device

Abstract

The application relates to a display panel and electronic equipment. The display panel comprises a driving backboard and a plurality of pixel units, the plurality of pixel units are arranged on one side of the driving backboard, and the driving backboard is used for controlling the plurality of pixel units to emit light; each pixel unit comprises at least one light emitting chip, any light emitting chip comprises opposite strong light emitting sides and weak light emitting sides along the plane direction of the light emitting surface of the light emitting chip, and the strong light emitting sides of the light emitting chips of two pixel units are close to each other or the weak light emitting sides of the light emitting chips of the two pixel units are close to each other, so as to improve the polarization condition of the display panel. The display panel of the application improves the polarization condition of the display panel by arranging the two strong light emitting sides of the two pixel units close to each other or the weak light emitting sides of the two pixel units close to each other, and enhances the display effect of the display panel.

Description

Technical Field

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

[0002] In the field of display technology, a display panel typically includes a driving backplane and multiple light-emitting chips disposed on the driving backplane. The driving backplane controls the multiple light-emitting chips to emit light in coordination, thereby realizing the display function of the display panel.

[0003] However, in existing technologies, due to their inherent structure, light-emitting chips may exhibit relatively strong and weak light-emitting sides in the planar direction of their light-emitting surface. This affects the uniformity of light emission from the chip, leading to polarization issues in the displayed image and consequently impacting the display panel's performance. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of this application is to provide a display panel that enhances the display effect, and an electronic device including the display panel, specifically including the following technical solutions:

[0005] In a first aspect, embodiments of this application provide a display panel including a driving backplate and a plurality of pixel units. The plurality of pixel units are disposed on one side of the driving backplate, and the driving backplate is used to control the plurality of pixel units to emit light. Each pixel unit includes at least one light-emitting chip. Each light-emitting chip includes a strong light-emitting side and a weak light-emitting side along the planar direction of its own light-emitting surface. The strong light-emitting sides or the weak light-emitting sides of the light-emitting chips of two pixel units are close to each other, so as to improve the polarization of the display panel.

[0006] The display panel of this application sets multiple pixel units on a driving backplane, so that the driving backplane can control electrical signals to enter each pixel unit and drive each pixel unit to emit light in coordination, thereby realizing the display function of the display panel of this application.

[0007] The display panel of this application also improves the polarization of the display panel by setting at least one light-emitting chip in each pixel unit and bringing the strong light-emitting side or weak light-emitting side of two pixel units close to each other, thereby enhancing the display effect of the display panel of this application.

[0008] In one embodiment, along the arrangement direction of the strong light-emitting side and the weak light-emitting side of the light-emitting chip, the wavelengths of the emitted light from the two light-emitting chips in two adjacent pixel units are within the same wavelength range.

[0009] In this embodiment, by setting the wavelength of the emitted light from the light-emitting chips in two adjacent pixel units in the strong light-emitting side and weak light-emitting side arrangement direction to the same wavelength range, the light emitted by the two light-emitting chips in the arrangement direction is of the same color, thereby avoiding the problem of light polarization when corresponding colors of light are emitted in two adjacent pixel units.

[0010] In one embodiment, along an arrangement direction perpendicular to the strong light-emitting side and the weak light-emitting side of the light-emitting chip, the pixel unit includes at least three light-emitting chips arranged at intervals, and the emitted light wavelengths of the at least three light-emitting chips are different.

[0011] In this embodiment, by arranging at least three light-emitting chips spaced apart in a direction perpendicular to the strong light-emitting side and the weak light-emitting side, the light emitted by the at least three light-emitting chips of different wavelengths can cooperate to form color mixing, thereby emitting light of various colors outward. This enhances the display effect of the display panel of this application.

[0012] In one embodiment, at least three light-emitting chips include a first light-emitting chip and a second light-emitting chip, wherein the wavelength of the emitted light from the first light-emitting chip is shorter than the wavelength of the emitted light from the second light-emitting chip; along the arrangement direction of the strong light-emitting side and the weak light-emitting side of the light-emitting chips, the number of the first light-emitting chip and the second light-emitting chip is one each, and the distance between the two first light-emitting chips of two adjacent pixel units is greater than the distance between the two second light-emitting chips.

[0013] In this embodiment, since the longer the wavelength of light, the smaller the refractive index of the corresponding medium for that light, the smaller the angle of refraction of the emitted light when it is emitted from inside the light-emitting chip. By arranging second light-emitting chips with a smaller spacing in the arrangement direction of the strong light-emitting side and the weak light-emitting side, the light emitted by two adjacent pixel units that are close to each other on the strong light-emitting side or the weak light-emitting side can be mixed more, thereby improving the brightness of the area between the two pixel units.

[0014] In one embodiment, the light-emitting chip includes a first semiconductor layer, a light-emitting layer, and a second semiconductor layer stacked sequentially. The light-emitting layer is close to one side of the first semiconductor layer and far away from the first semiconductor layer along the light-emitting plane direction of the light-emitting surface of the light-emitting chip. The side of the light-emitting layer close to the first semiconductor layer constitutes the strong light-emitting side of the light-emitting chip, and the side of the light-emitting layer far away from the first semiconductor layer constitutes the weak light-emitting side of the light-emitting chip.

[0015] In this embodiment, since the first semiconductor layer and the second semiconductor layer need to have areas for connection with corresponding electrodes, the light-emitting layer of the light-emitting chip is disposed on one side of the first semiconductor layer, so that the electrodes are disposed on the other side of the first semiconductor layer and are connected to the first semiconductor layer. This creates opposing strong light-emitting sides and weak light-emitting sides in the planar direction of the light-emitting surface. This allows the display panel of this application to use the light-emitting chip provided in this embodiment.

[0016] In one embodiment, the first semiconductor layer is located between the second semiconductor layer and the driving backplane; or, the second semiconductor layer is located between the first semiconductor layer and the driving backplane.

[0017] In this embodiment, when the light-emitting chip is configured as a front-mounted light-emitting chip, the first semiconductor layer of the light-emitting chip is located between the second semiconductor layer and the driving backplane, so that the light emitted by the light-emitting chip can be emitted outward from the light-emitting layer through the second semiconductor layer. When the light-emitting chip is configured as a flip-chip light-emitting chip, the second semiconductor layer of the light-emitting chip is located between the first semiconductor layer and the driving backplane, so that the light emitted by the light-emitting chip can be emitted outward from the light-emitting layer through the first semiconductor layer.

[0018] In one embodiment, the light-emitting chip is a vertical light-emitting chip, which includes a first sidewall and a second sidewall that are respectively connected to the driving backplate and disposed opposite to each other. The angle between the first sidewall and the surface of the driving backplate is a right angle or an obtuse angle to form a strong light-emitting side, and the angle between the second sidewall and the surface of the driving backplate is an acute angle to form a weak light-emitting side.

[0019] In this embodiment, when the light-emitting chip is configured as a vertical light-emitting chip, based on existing processes, the angles between the first and second sidewalls of the light-emitting chip and the surface of the driving backplate will be different. This results in the proportion of the light-emitting layer on the side of the light-emitting chip including the first sidewall being greater than the proportion of the light-emitting layer on the side including the second sidewall, correspondingly forming a relatively strong light-emitting side and a weak light-emitting side. This allows the display panel of this application to use the vertical light-emitting chip provided in this embodiment.

[0020] In one embodiment, the display panel further includes a barrier wall, which is disposed between two pixel units that are close to each other on the strong light-emitting side along the arrangement direction of the strong light-emitting side and the weak light-emitting side of the light-emitting chip; the barrier wall is also disposed between two adjacent pixel units along the arrangement direction perpendicular to the strong light-emitting side and the weak light-emitting side of the light-emitting chip.

[0021] In this embodiment, by placing a barrier between two adjacent pixel units on the strong light-emitting side in the arrangement direction of the strong light-emitting side and the weak light-emitting side, and placing the barrier between adjacent pixel units in the arrangement direction perpendicular to the strong light-emitting side and the weak light-emitting side, crosstalk of light emitted by adjacent pixel units is prevented. On the other hand, the barrier can also surround two adjacent pixel units on the weak light-emitting side, so that the light emitted by the two pixel units cooperates with each other, thereby improving the uniformity of the light emitted outward by the two pixel units and enhancing the display effect of the display panel of this application.

[0022] In one embodiment, the pixel unit further includes a backplane, and each light-emitting chip is disposed on the driving backplane via the backplane.

[0023] In this embodiment, by placing each light-emitting chip on the driving backplane via a backplane, each pixel unit can use MIP (Micro LED in Package) technology to encapsulate the light-emitting chip, thereby enhancing the display effect of each pixel unit and thus enhancing the display effect of the display panel of this application.

[0024] Secondly, embodiments of this application provide an electronic device, including a housing and a display panel, wherein the display panel is housed within the housing.

[0025] It is understandable that since the electronic device provided in the second aspect of this application uses the display panel provided in the first aspect of this application, it also has the beneficial effect of enhancing the display effect. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an electronic device provided in one embodiment of this application;

[0027] Figure 2 This is a schematic diagram of the structure of a display panel provided in one embodiment of this application;

[0028] Figure 3 This is a partial structural diagram of a display panel provided in one embodiment of this application;

[0029] Figure 4 This is a cross-sectional structural diagram of a display panel provided in one embodiment of this application;

[0030] Figure 5 This is a schematic cross-sectional view of another display panel provided in one embodiment of this application;

[0031] Figure 6 This is a schematic cross-sectional view of another display panel provided in one embodiment of this application;

[0032] Figure 7This is a schematic diagram of the structure of a display panel in the prior art;

[0033] Figure 8 This is a cross-sectional structural diagram of a display panel in the prior art;

[0034] Figure 9 This is a schematic diagram of another cross-sectional structure of a display panel in the prior art;

[0035] Figure 10 This is a schematic diagram of another cross-sectional structure of a display panel in the prior art;

[0036] Figure 11 This is a schematic diagram showing the light intensity of the light-emitting chip in a display panel in the prior art;

[0037] Figure 12 This is a schematic diagram of the light intensity of a pixel unit of a display panel provided in one embodiment of this application;

[0038] Figure 13 This is a schematic diagram of another partial structure of the display panel provided in one embodiment of this application;

[0039] Figure 14 This is a schematic cross-sectional view of another display panel provided in one embodiment of this application;

[0040] Figure 15 This is a schematic diagram of another partial structure of the display panel provided in one embodiment of this application.

[0041] The reference numerals in the attached figures are as follows: 200 - electronic device; 201 - housing; 100 - display panel; 10 - driving backplate; 11 - first surface; 20 - pixel unit; 20a - first pixel unit; 20b - second pixel unit; 20c - third pixel unit; 21 - light-emitting chip; 21a - first light-emitting chip; 21b - second light-emitting chip; 21c - third light-emitting chip; 211 - light-emitting surface; 212 - strong light-emitting side; 213 - weak light-emitting side; 214 - first semiconductor layer; 215 - light-emitting layer; 216 - second semiconductor layer; 2171 - first electrode; 2172 - second electrode; 2181 - third electrode; 202 - first electrode; 203 - second electrode; 204 - third electrode; 205 - first semiconductor layer; 206 - second semiconductor layer; 207 - first electrode; 208 - second electrode; 209 - second electrode; 200 - third electrode; 200 - third electrode; 200 - first semiconductor layer; 200 - first semiconductor layer; 200 - second ... 2182 - Second sidewall; 22 - Spacing area; 23 - Edge area; 24 - Backplate; 25 - Pad; 251 - First pad; 252 - Second pad; 253 - Third pad; 254 - Zero pad; 30 - Barrier; 100' - Display panel; 10' - Driver backplate; 20' - Light-emitting chip; 21' - Strong light-emitting side; 22' - Weak light-emitting side; 23' - First semiconductor layer; 24' - Light-emitting layer; 25' - Second semiconductor layer; 26' - First electrode; 27' - Second electrode; 001 - First direction; 002 - Second direction; A1 - First included angle; A2 - Second included angle. Detailed Implementation

[0042] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. Preferred embodiments of this application are shown in the drawings. However, this application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this application.

[0043] The following descriptions of the embodiments are based on the accompanying illustrations and are used to illustrate specific embodiments in which this application can be implemented. The component designations used herein, such as "first," "second," etc., are merely for distinguishing the described objects and have no sequential or technical meaning. Unless otherwise specified, the terms "connection" and "linkage" used in this application include both direct and indirect connections (linkages). Directional terms used in this application, such as "up," "down," "front," "rear," "left," "right," "inner," "outer," "side," etc., are merely for reference to the accompanying illustrations. Therefore, the use of directional terms is for better and clearer explanation and understanding of this application, and does not indicate or imply that the referred device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this application.

[0044] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joint" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two elements. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising," "may include," "include," or "may include" used in this application indicate the presence of the corresponding disclosed function, operation, element, etc., and do not limit one or more other functions, operations, elements, etc. Moreover, the terms "comprising" or "include" indicate the presence of the corresponding features, numbers, steps, operations, elements, components, or combinations thereof disclosed in the specification, but do not exclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof, and are intended to cover non-exclusive inclusion.

[0045] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the specification of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.

[0046] Please see Figure 1 The diagram shown is a structural schematic of an electronic device 200 provided in one embodiment of this application.

[0047] like Figure 1 As shown, the electronic device 200 of this application includes a housing 201 and a display panel 100. The housing 201 is used to house and protect the display panel 100. The display panel 100 is capable of emitting light outward to realize the display function of the electronic device 200 of this application.

[0048] Please see Figure 2 The diagram shown is a structural schematic of a display panel 100 provided in one embodiment of this application.

[0049] like Figure 2 As shown, the display panel 100 of this application includes a driving backplate 10 and a plurality of pixel units 20, wherein the plurality of pixel units 20 are disposed on one side of the driving backplate 10 and electrically connected to the driving backplate 10. The driving backplate 10 can control electrical signals to enter each pixel unit 20 to drive each pixel unit 20 to emit light in coordination, thereby realizing the display function of the display panel 100 of this application.

[0050] Please see Figure 3 The diagram shown is a partial structural schematic of a display panel 100 provided in one embodiment of this application.

[0051] like Figure 3 As shown, a first pixel unit 20a, a second pixel unit 20b, and a third pixel unit 20c are arrayed along the first direction 001. Each pixel unit 20a includes multiple light-emitting chips 21. The multiple light-emitting chips 21 are arrayed on the surface of the driving backplate 10 and along the second direction 002. The first direction 001 and the second direction 002 are perpendicular.

[0052] Each light-emitting chip 21 has a relatively strong light-emitting side 212 and a weak light-emitting side 213 in the planar direction of its own light-emitting surface 211. For example... Figure 3 As shown, the arrangement direction of the strong light-emitting side 212 and the weak light-emitting side 213 of the light-emitting chip 21 is the same as that of the first direction 001. When the light-emitting chip 21 emits light under the action of an electrical signal, the intensity of the light emitted from the strong light-emitting side 212 is greater than the intensity of the light emitted from the weak light-emitting side 213.

[0053] like Figure 3As shown, for the first pixel unit 20a and the second pixel unit 20b, the weak light-emitting side 213 of the light-emitting chip 21 in the first pixel unit 20a and the weak light-emitting side 213 of the light-emitting chip 21 in the second pixel unit 20b are close to each other. That is, the two weak light-emitting sides 213 corresponding to the light-emitting chips 21 of the two pixel units 20 are located between the two corresponding strong light-emitting sides 212. And the two weak light-emitting sides 213 corresponding to the two light-emitting chips 21 are located in the interval region 22 between the first pixel unit 20a and the second pixel unit 20b.

[0054] Understandably, the light in the edge region 23 surrounding the first pixel unit 20a and the second pixel unit 20b mainly comes from the light emitted outward from the strong light-emitting side 212, while the light in the interval region 22 mainly comes from the light emitted outward from the weak light-emitting side 213.

[0055] When the driving backplane 10 sends an electrical signal to the two pixel units 20, the two light-emitting chips 21 arranged along the first direction 001 in the two pixel units 20 can emit light outward. Among them, the two weak light-emitting sides 213 located in the interval region 22 can emit light to enhance the brightness of the interval region 22 between the first pixel unit 20a and the second pixel unit 20b.

[0056] There is a difference in light intensity between the strong light-emitting side 212 and the weak light-emitting side 213 of the light-emitting chip 21, and the strong light-emitting side 212 is located in the edge region 23. It is understandable that when the brightness of the interval region 22 between the first pixel unit 20a and the second pixel unit 20b increases, the difference in light brightness between the strong light-emitting side 212 of the first pixel unit 20a and the second pixel unit 20b will decrease, thereby resulting in higher uniformity of the light emitted by the first pixel unit 20a and the second pixel unit 20b as a whole. This, in turn, improves the polarization problem of the display panel 100 of this application.

[0057] like Figure 3 As shown, for the second pixel unit 20b and the third pixel unit 20c, the strong light-emitting side 212 of the light-emitting chip 21 in the second pixel unit 20b and the strong light-emitting side 212 of the light-emitting chip 21 in the third pixel unit 20c are close to each other.

[0058] Understandably, the light emitted from the strong light-emitting side 212 of the second pixel unit 20b and the light emitted from the strong light-emitting side 212 of the third pixel unit 20c converge in the area between the second pixel unit 20b and the third pixel unit 20c, thereby preventing the bright light emitted by the light-emitting chip 21 from escaping outward from the edge area of ​​the display panel 100. This improves the polarization problem of the display panel 100 of this application.

[0059] Therefore, by bringing the strong light-emitting sides 212 of two adjacent pixel units 20 closer together, or bringing the weak light-emitting sides 213 of two adjacent pixel units 20 closer together, the display panel 100 of this application can improve the polarization problem of the display panel 100 of this application, thereby enhancing the display effect of the display panel 100 of this application.

[0060] Please see Figure 4 The diagram shown is a cross-sectional view of the display panel 100 provided in one embodiment of this application, and please refer to [the following text is also included]. Figure 5 The diagram shown is another cross-sectional view of the display panel 100 provided in one embodiment of this application.

[0061] like Figure 4 and Figure 5 As shown, the light-emitting chip 21 includes a first semiconductor layer 214, a light-emitting layer 215, and a second semiconductor layer 216 stacked sequentially. The first semiconductor layer 214 can provide electrons or holes to the light-emitting chip 21, and correspondingly, the second semiconductor layer 216 can provide holes or electrons to the light-emitting chip 21.

[0062] When the electrical signal emitted by the driving backplane 10 causes the light-emitting chip 21 to be forward-biased, the current acting on the first semiconductor layer 214 causes electrons or holes in the first semiconductor layer 214 to move to the second semiconductor layer 216. Conversely, the current acting on the second semiconductor layer 216 causes holes or electrons in the second semiconductor layer 216 to move to the first semiconductor layer 214. Simultaneously, when these electrons and holes meet and combine, they radiate light outward, thus achieving the purpose of emitting light.

[0063] Simultaneously, the light-emitting layer 215 is used to carry electrons or holes emitted from the first semiconductor layer 214, and holes or electrons emitted from the second semiconductor layer 216. Understandably, the light emitted by the light-emitting chip 21 is emitted outward from the light-emitting layer 215. On the other hand, the light-emitting layer 215 also increases the overlap rate of electrons and holes, improving the recombination light-emitting efficiency of the light-emitting chip 21.

[0064] A first electrode 2171 is provided on the surface of the first semiconductor layer 214, and a second electrode 2172 is provided on the surface of the second semiconductor layer 216. The first electrode 2171 and the second electrode 2172 are electrically connected to the driving backplane 10, so that electrical signals can enter the first semiconductor layer 214 and the second semiconductor layer 216 through the first electrode 2171 and the second electrode 2172, respectively. It can be understood that the electrical signals from the driving backplane 10 can be input into the light-emitting chip 21 through the first electrode 2171 and the second electrode 2172, thereby driving the light-emitting chip 21 to emit light.

[0065] To achieve electrical connection between the first electrode 2171 and the second electrode 2172 and the corresponding first semiconductor layer 214 and second semiconductor layer 216, regions need to be provided on the first semiconductor layer 214 and the second semiconductor layer 216 for electrical connection with the first electrode 2171 and the second electrode 2172. For example... Figure 4 and Figure 5 As shown, the light-emitting layer 215 of the light-emitting chip 21 is disposed on one side of the first semiconductor layer 214, so that the other side of the first semiconductor layer 214 can be electrically connected to the first electrode 2171.

[0066] Since the light-emitting layer 215 is only disposed on one side of the first semiconductor layer 214, it can be understood that, in the planar direction of the light-emitting surface 211, the light-emitting chip 21 can form a relatively strong light-emitting side 212 and a weak light-emitting side 213. This allows the display panel 100 of this application to adopt... Figure 4 or Figure 5 The light-emitting chip 21 shown.

[0067] Meanwhile, the display panel 100 of this application adopts Figure 4 or Figure 5 The light-emitting chip 21 shown can also reduce the impact of the structure of the light-emitting chip 21 on the uniformity of light emission.

[0068] In one embodiment, such as Figure 4 As shown, the light-emitting chip 21 can be configured as a forward-mounted light-emitting chip. Correspondingly, the first semiconductor layer 214 of the forward-mounted light-emitting chip is located between the second semiconductor layer 216 and the driving backplate 10. When the light-emitting chip 21 is forward-biased, the light emitted by the light-emitting layer 215 is emitted outward through the second semiconductor layer 216, thereby realizing the display function of the display panel 100 of this application.

[0069] In one embodiment, such as Figure 5 As shown, the light-emitting chip 21 can also be configured as a flip-chip light-emitting chip. Correspondingly, the second semiconductor layer 216 of the flip-chip light-emitting chip is located between the first semiconductor layer 214 and the driving backplate 10. When the light-emitting chip 21 is forward-biased, the light emitted by the light-emitting layer 215 is emitted outward through the first semiconductor layer 214, thereby realizing the display function of the display panel 100 of this application.

[0070] Please see Figure 6 The diagram shown is another cross-sectional view of the display panel 100 provided in one embodiment of this application.

[0071] In existing technologies, light-emitting chips 21 are typically arranged on the first surface of a wafer and cut off from the wafer using a laser cutting process to form individual light-emitting chips 21. However, since the crystal orientation of the substrate structure used to fabricate the light-emitting chips 21 is not perpendicular to the first surface, the sidewalls of the light-emitting chips 21 formed by laser cutting are also not perpendicular to the first surface. Understandably, when the cleaving angle between the sidewalls and the first surface is obtuse or acute, it will affect the proportion of the light-emitting layer in the light-emitting chip 21.

[0072] like Figure 6 As shown, the first electrode 2171 of the light-emitting chip 21 is disposed on the side of the first semiconductor layer 214 opposite to the second semiconductor layer 216 and is electrically connected to the first semiconductor layer 214. The second electrode 2172 is disposed on the side of the second semiconductor layer 216 opposite to the first semiconductor layer 214 and is electrically connected to the second semiconductor layer 216. The second semiconductor layer 216 is located between the first semiconductor layer 214 and the driving backplate 10.

[0073] It is understood that the light-emitting chip 21 with the above structure is a vertical light-emitting chip. The vertical light-emitting chip includes a first sidewall 2181 and a second sidewall 2182 connected to the driving backplate 10 and disposed opposite to each other. For example... Figure 6 As shown, the first included angle A1 between the first sidewall 2181 and the first surface 11 of the driving backplate 10 is an obtuse angle. It can be understood that the light-emitting layer 215 on the side of the light-emitting chip 21 including the first sidewall 2181 accounts for a relatively large proportion, thereby making more light emitted from the light-emitting layer 215 from that side, forming a strong light-emitting side 212.

[0074] Correspondingly, such as Figure 6 As shown, the second included angle A2 between the second sidewall 2182 and the first surface 11 of the driving backplate 10 is an acute angle. This makes the proportion of the light-emitting layer 215 on the side of the light-emitting chip 21 including the second sidewall 2182 relatively small, thereby making less light emitted from the light-emitting layer 215 from that side, forming a weak light-emitting side 213.

[0075] The proportion of the light-emitting layer 215 on the side of the light-emitting chip 21 including the first sidewall 2181 is greater than the proportion of the light-emitting layer 215 on the side of the light-emitting chip 21 including the second sidewall 2182. It is understood that, in the planar direction of the light-emitting surface 211, the light-emitting chip 21 can form a relatively strong light-emitting side 212 and a weak light-emitting side 213. This allows the display panel 100 of this application to adopt... Figure 6 The light-emitting chip 21 shown.

[0076] Meanwhile, the display panel 100 of this application adopts Figure 6The light-emitting chip 21 shown can also reduce the impact of the scratch angle caused by laser cutting on the light emission uniformity of the light-emitting chip 21.

[0077] Understandably, in some other embodiments, the first included angle A1 between the first sidewall 2181 and the first surface 11 of the driving backplate 10 is a right angle, and the second included angle A2 between the second sidewall 2182 and the first surface 11 of the driving backplate 10 is an acute angle. Correspondingly, in the planar direction of the light-emitting surface 211, the light-emitting chip 21 can form a relatively strong light-emitting side 212 and a weak light-emitting side 213.

[0078] In one embodiment, please refer back. Figure 4 and Figure 5 Based on the existing process of using laser cutting of wafers to form a single light-emitting chip 21, Figure 4 and Figure 5 The structure of the light-emitting chip 21 shown also has a situation where the sidewalls are not perpendicular to the surface of the driving backplate 10. Therefore, the display panel 100 of this application adopts... Figure 4 and Figure 5 When using the light-emitting chip 21 shown, the impact of the scratch angle caused by laser cutting on the light emission uniformity of the light-emitting chip 21 can also be reduced.

[0079] Please see Figure 7 The diagram shows a structural schematic of a display panel 100' in the prior art.

[0080] like Figure 7 As shown, in the prior art, the display panel 100' includes a driving backplate 10' and a plurality of light-emitting chips 20'. The plurality of light-emitting chips 20' are disposed on one side of the driving backplate 10', so that the driving backplate 10' can control the light-emitting chips 20' to emit light by controlling the electrical signals entering the light-emitting chips 20'.

[0081] like Figure 7 As shown, multiple light-emitting chips 20' are arrayed on one side of the driving backplate 10'. Each light-emitting chip 20' includes a strong light-emitting side 21' and a weak light-emitting side 22' arranged opposite to each other. In the arrangement direction of the strong light-emitting side 21' and the weak light-emitting side 22', the arrangement direction of the light-emitting chips 20' is consistent, and there is a strong light-emitting side 21' between two adjacent weak light-emitting sides 22'.

[0082] In existing technologies, such as Figure 8 , Figure 9 and Figure 10As shown, the light-emitting chip 20' further includes a first semiconductor layer 23', a light-emitting layer 24', a second semiconductor layer 25', a first electrode 26', and a second electrode 27'. The first semiconductor layer 23', the light-emitting layer 24', and the second semiconductor layer 25' are stacked on top of each other. The first electrode 26' is electrically connected to the first semiconductor layer 23', and the second electrode 27' is electrically connected to the second semiconductor layer 25'.

[0083] When the display panel 100' uses upright light-emitting chips (such as...) Figure 8 As shown), flip-chip (such as) Figure 9 (as shown) and vertical light-emitting chips (such as) Figure 10 As shown, the intensity of light emitted from the strong light-emitting side 21' is greater than that from the weak light-emitting side 22'. When the driving backplate 10' controls the light-emitting chip 20' to emit light, the area between two adjacent light-emitting chips 20' simultaneously receives light emitted from both the strong light-emitting side 21' and the weak light-emitting side 22', causing inconsistent light emission brightness in different areas of the display panel 100', thus affecting the uniformity of light emission from the display panel 100'.

[0084] Among them, such as Figure 11 As shown, when two adjacent light-emitting chips 20' cooperate to emit red, green, and blue light respectively, the uniformity of any color of light emitted by the light-emitting chip 20' is relatively poor. Figure 11 As shown in the figure, at any position in the diagram, the light intensity of the three types of light emitted by the light-emitting chip 20' is not consistent, which causes the light emitted outward by the overall display panel 100' to have a polarization problem.

[0085] The display panel 100 of this application improves the polarization of the display panel 100 by setting multiple pixel units 20 and bringing the weak light-emitting sides 213 of the two light-emitting chips 21 in two adjacent pixel units 20 closer together, or bringing the strong light-emitting sides 212 of the two light-emitting chips 21 in two adjacent pixel units 20 closer together. This reduces the impact of the strong light-emitting sides 212 and weak light-emitting sides 213 of the light-emitting chips 21 on the light emission effect of the display panel 100, thereby improving the display panel 100's display performance.

[0086] Among them, such as Figure 12 As shown, when the three light-emitting chips 21 in two adjacent pixel units 20 emit red, green, and blue light respectively, the light of any color emitted by the two adjacent pixel units 20 is symmetrical to each other in the first direction 001 (not shown in the figure). It can be understood that at any position in the figure, the intensity of the different colors of light emitted by the light-emitting chips 21 is relatively consistent, thereby avoiding the polarization problem of the display panel 100 of this application.

[0087] In one embodiment, please refer back. Figure 3 The display panel 100 also includes a barrier 30. In the first direction 001, the barrier 30 is disposed between two pixel units 20 that are close to each other on the strong light-emitting side 212 to prevent crosstalk of light emitted from the strong light-emitting side 212 of adjacent pixel units 20.

[0088] Understandably, in the first direction 001, the weak light-emitting sides 213 of two pixel units 20 disposed between two adjacent baffles 30 are brought closer together, so that the light emitted by the weak light-emitting sides 213 can be used to enhance the brightness of the gap area 22 between the two pixel units 20, thereby reducing the brightness difference between the gap area 22 and the edge area 23 and improving the uniformity of the light emitted by the two pixel units 20 as a whole. This enhances the display effect of the display panel 100 of this application.

[0089] Meanwhile, in the second direction 002, the barrier 30 is also disposed between two adjacent pixel units 20 to prevent crosstalk of light emitted by adjacent pixel units 20.

[0090] like Figure 3 As shown, the baffles 30 arranged in the first direction 001 and the baffles 30 arranged in the second direction 002 cooperate to divide the multiple pixel units 20 arrayed on the surface of the drive backplate 10. This ensures that two pixel units 20 on the weak light-emitting side 213 that are close to each other are located within the space formed by the baffles 30. It can be understood that the baffles 30 block light crosstalk between pixel units 20 in adjacent spaces, thereby ensuring the uniformity of light emitted by two pixel units 20 within a single space. This improves the polarization phenomenon of the display panel 100 and enhances the display effect of the display panel 100.

[0091] Please see Figure 13 The diagram shown is a partial structural schematic of a display panel 100 provided in one embodiment of this application. Figure 13 for Figure 3 A partial structural diagram of two pixel units 20 within the space formed by the central retaining wall 30.

[0092] like Figure 13 As shown, along the arrangement direction of the strong light-emitting side 212 and the weak light-emitting side 213 of the light-emitting chip 21, the wavelengths of the emitted light from the two light-emitting chips 21 in the two pixel units 20 are in the same wavelength range.

[0093] Since the wavelength range of emitted light is related to the color of the light, it is understandable that setting the wavelength of the emitted light from the two light-emitting chips 21 in the two pixel units 20 to the same wavelength range will make the light emitted by the two light-emitting chips 21 in the two pixel units 20 have the same color.

[0094] On the other hand, such as Figure 13 As shown, the weak light-emitting side 213 corresponding to the two light-emitting chips 21 within the two pixel units 20 is located between the two strong light-emitting sides 212. The light emitted from the two weak light-emitting sides 213 can enhance the brightness of the interval region 22 between the two pixel units 20. It is understood that when the two pixel units 20 emit light of the same color, the uniformity of the light emitted by the two pixel units 20 as a whole is high, thereby reducing the occurrence of polarization problems. This further enhances the display effect of the display panel 100 of this application.

[0095] In one embodiment, such as Figure 13 As shown, along the arrangement direction perpendicular to the strong light-emitting side 212 and weak light-emitting side 213 of the light-emitting chip 21, the pixel unit 20 includes a first light-emitting chip 21a, a second light-emitting chip 21b, and a third light-emitting chip 21c arranged at intervals. That is, in the second direction 002, the first light-emitting chip 21a, the second light-emitting chip 21b, and the third light-emitting chip 21c are arranged at intervals. The emitted light wavelengths of the first light-emitting chip 21a, the second light-emitting chip 21b, and the third light-emitting chip 21c are all different, so that the emitted light from the first light-emitting chip 21a, the second light-emitting chip 21b, and the third light-emitting chip 21c has different colors.

[0096] The pixel unit 20 can control the first light-emitting chip 21a, the second light-emitting chip 21b and the third light-emitting chip 21c to emit light, so that the light emitted by the first light-emitting chip 21a, the second light-emitting chip 21b and the third light-emitting chip 21c can cooperate with each other and form color mixing, thereby increasing the variety of colors of the light emitted by the pixel unit 20 and enhancing the display effect of the display panel 100 of this application.

[0097] like Figure 13 As shown, in this embodiment, the wavelength range of the emitted light from the first light-emitting chip 21a is 620nm-760nm, enabling it to emit red light. The wavelength range of the emitted light from the second light-emitting chip 21b is 492nm-577nm, enabling it to emit green light. The wavelength range of the emitted light from the third light-emitting chip 21c is 400nm-450nm, enabling it to emit blue light. This forms a structure of "R, G, B" three-primary-color light-emitting chips.

[0098] Understandably, in other embodiments, the wavelength range, arrangement, and number of the emitted light from the first light-emitting chip 21a, the second light-emitting chip 21b, and the third light-emitting chip 21c can be arbitrarily set based on the specific application scenario of the product. The light-emitting chip 21 in the pixel unit 20 can emit light of different colors and mix colors to form a display effect.

[0099] In another embodiment, in the second direction 002, the number of light-emitting chips 21 in the pixel unit 20 can also be set to more than three, and the applicant does not make any special limitation on this.

[0100] In one embodiment, such as Figure 13 As shown, along the arrangement direction of the strong light-emitting side 212 and the weak light-emitting side 213 of the light-emitting chip 21, there is one first light-emitting chip 21a and one second light-emitting chip 21b. When the wavelength of the emitted light from the first light-emitting chip 21a is less than the wavelength of the emitted light from the second light-emitting chip 21b, the distance between the two first light-emitting chips 21a of two adjacent pixel units 20 is greater than the distance between the two second light-emitting chips 21b.

[0101] The light emitted by the light-emitting chip 21 originates from the light-emitting layer (not shown in the figure) within its internal structure and passes through the semiconductor layer (not shown in the figure) before exiting from the light-emitting surface 211. As the light exits from the semiconductor layer, it undergoes refraction. Furthermore, the wavelength of the light affects the refractive index of the semiconductor layer. Specifically, the longer the wavelength of the light emitted from the light-emitting layer, the lower the refractive index of the semiconductor layer. Correspondingly, the angle of refraction of the light emitted from the semiconductor layer is smaller.

[0102] The emitted light from the first light-emitting chip 21a has a shorter wavelength and a larger angle of refraction. The light emitted from the weaker light-emitting side 213 of the first light-emitting chip 21a can reach more of the interval region 22, resulting in a relatively higher brightness in the interval region 22. Since the brightness of the interval region 22 also needs to be controlled to prevent it from being too bright and exceeding the brightness of the edge region 23, it is understandable that the spacing between the two first light-emitting chips 21a of two adjacent pixel units 20 should be relatively large to control the brightness of the interval region 22.

[0103] The emitted light from the second light-emitting chip 21b has a longer wavelength and a smaller angle of refraction. Only a small portion of the light emitted from the weaker light-emitting side 213 of the second light-emitting chip 21b reaches the interval region 22, resulting in relatively low brightness in the interval region 22. Since the brightness of the interval region 22 also needs to be controlled to avoid affecting the uniformity of the light emitted by the two pixel units 20, it is understandable that the spacing between the two second light-emitting chips 21b of the two pixel units 20 should be relatively small to control the brightness of the interval region 22.

[0104] Therefore, in the arrangement direction of the strong light-emitting side 212 and the weak light-emitting side 213 of the light-emitting chip 21, the spacing between the two light-emitting chips 21 of the two pixel units 20 in this direction is adjusted according to the wavelength of the light-emitting chip 21 to control the brightness of the interval region 22, reduce the brightness difference between the interval region 22 and the edge region 23, and thus ensure the overall light emission uniformity of the two pixel units 20.

[0105] For ease of description, in the first direction 001, the spacing between the two light-emitting chips 21 of the two pixel units 20 is relatively large, and when adjusting the spacing between the light-emitting chips 21 according to their wavelengths, the spacing is adjusted to be relatively large to better highlight the relationship between wavelength and spacing. In actual manufacturing, the spacing between the two light-emitting chips 21 of the two pixel units 20 is relatively small.

[0106] It is understood that in other embodiments, the spacing between the remaining two adjacent light-emitting chips 21 of the two pixel units 20 in the first direction 001 can also be adaptively adjusted by comparing with the wavelength of the adjacent light-emitting chip 21 in the second direction 002, and the applicant does not make any particular limitation on this.

[0107] Please see Figure 14 The diagram shown is a cross-sectional view of another embodiment of the display panel 100 provided in this application, and please refer to [the diagram]. Figure 15 The diagram shows another partial structural schematic of the display panel 100 provided in one embodiment of this application.

[0108] like Figure 14As shown, the pixel unit 20 also includes a backplate 24, and each light-emitting chip 21 is disposed on the driving backplate 10 via the backplate 24, so that each pixel unit 20 can use MIP (Micro LED in Package) technology to package the light-emitting chip 21. Since using MIP technology to package the light-emitting chip 21 can solve the repair and binning problems encountered by the light-emitting chip 21, it is understandable that using MIP technology to package the light-emitting chip 21 in the pixel unit 20 can enhance the display effect of each pixel unit 20, thereby enhancing the display effect of the display panel 100 of this application.

[0109] like Figure 15 As shown, the display panel 100 also includes pads 25. The pads 25 include a first pad 251, a second pad 252, a third pad 253, and a zero-position pad 254. Specifically, the first pad 251, the second pad 252, and the third pad 253 are electrically connected to the first electrode 2171 or the second electrode 2172 (not shown in the figure) of the first light-emitting chip 21a, the second light-emitting chip 21b, and the third light-emitting chip 21c, respectively.

[0110] The zero-position pad 254 is electrically connected to the second electrode 2172 or the first electrode 2171 of the first light-emitting chip 21a, the second light-emitting chip 21b, and the third light-emitting chip 21c, and is used to provide a basic zero position for the first light-emitting chip 21a, the second light-emitting chip 21b, and the third light-emitting chip 21c.

[0111] The first pad 251, the second pad 252, the third pad 253, and the zero-position pad 254 are connected to the driving circuit (not shown in the figure) on the driving backplate 10. The driving circuit connected to the zero-position pad 254 provides a zero potential to all three light-emitting chips 21 simultaneously. The three driving circuits connected to the first pad 251, the second pad 252, and the third pad 253 respectively provide the driving voltage required for the operation of the first light-emitting chip 21a, the second light-emitting chip 21b, and the third light-emitting chip 21c, thereby controlling the display brightness of each light-emitting chip 21 to achieve the function of color mixing in the pixel units 20 to form a display effect.

[0112] It should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of embodiments of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0113] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0114] It should be understood that the application of this application is not limited to the examples above. Those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims. Those skilled in the art will understand that implementing all or part of the processes of the above embodiments, and making equivalent changes according to the claims of this invention, still falls within the scope of this invention.

Claims

1. A display panel, characterized by, The display panel comprises a driving backboard and a plurality of pixel units arranged on one side of the driving backboard, the driving backboard being used for controlling the plurality of pixel units to emit light; each of the pixel units comprises at least one light emitting chip, any of the light emitting chips comprises opposite strong light emitting sides and weak light emitting sides along the plane direction of the light emitting surface of the light emitting chip, the strong light emitting sides of the light emitting chips of two adjacent pixel units are close to each other or the weak light emitting sides of the light emitting chips of two adjacent pixel units are close to each other, so as to improve the polarization of the display panel.

2. The display panel of claim 1, wherein, Along the arrangement direction of the strong light emitting sides and the weak light emitting sides of the light emitting chip, the wavelengths of the light emitted by the two light emitting chips in the two adjacent pixel units are in the same wavelength range.

3. The display panel of claim 1, wherein, Along the arrangement direction perpendicular to the strong light emitting sides and the weak light emitting sides of the light emitting chip, the pixel unit comprises at least three light emitting chips arranged at intervals, and the wavelengths of the light emitted by the at least three light emitting chips are different.

4. The display panel of claim 3, wherein, The at least three light emitting chips comprise a first light emitting chip and a second light emitting chip, and the wavelength of the light emitted by the first light emitting chip is smaller than the wavelength of the light emitted by the second light emitting chip. Along the arrangement direction of the strong light emitting sides and the weak light emitting sides of the light emitting chip, the number of the first light emitting chip and the second light emitting chip is one respectively, and the distance between the two first light emitting chips of two adjacent pixel units is greater than the distance between the two second light emitting chips.

5. The display panel according to any one of claims 1-4, characterized in that, The light emitting chip comprises a first semiconductor layer, a light emitting layer and a second semiconductor layer stacked in sequence, the light emitting layer is close to one side of the first semiconductor layer and away from the other side of the first semiconductor layer along the plane direction of the light emitting surface of the light emitting chip, the side of the light emitting layer close to the first semiconductor layer constitutes the strong light emitting side of the light emitting chip, and the side of the light emitting layer away from the first semiconductor layer constitutes the weak light emitting side of the light emitting chip.

6. The display panel of claim 5, wherein, The first semiconductor layer is located between the second semiconductor layer and the driving backboard, or the second semiconductor layer is located between the first semiconductor layer and the driving backboard.

7. The display panel according to any one of claims 1-4, wherein, The light emitting chip is a vertical light emitting chip, the vertical light emitting chip comprises a first side wall and a second side wall connected to the driving backboard and arranged oppositely, the included angle between the first side wall and the surface of the driving backboard is a right angle or an obtuse angle and forms the strong light emitting side, and the included angle between the second side wall and the surface of the driving backboard is an acute angle to form the weak light emitting side.

8. The display panel according to any one of claims 1-4, characterized in that, The display panel further comprises a barrier wall, along the arrangement direction of the strong light emitting sides and the weak light emitting sides of the light emitting chip, the barrier wall is arranged between two pixel units with the strong light emitting sides close to each other. Along the arrangement direction perpendicular to the strong light emitting sides and the weak light emitting sides of the light emitting chip, the barrier wall is further arranged between two adjacent pixel units.

9. The display panel of any of claims 1-4, wherein, The pixel unit further comprises a backboard, and each light emitting chip is arranged on the driving backboard through the backboard.

10. An electronic device, comprising: The display panel comprises a housing and a display panel according to any one of claims 1-9, and the display panel is accommodated in the housing.

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