Micro LED display panel

Abstract

The micro LED display panel comprises a micro LED array, the micro LED array comprises a plurality of micro LEDs and a plurality of electric connection structures, and the electric connection structures are arranged around the micro LEDs and electrically connected with the micro LEDs. And a plurality of light propagation channels are formed between the adjacent micro LEDs. Each light propagation channel includes at least one gap of a plurality of gaps defined between adjacent electrical connection structures. From a top view of the micro LED array, the light propagation channel is curved.

Description

Technical Field

[0001] The present disclosure relates to a micro light emitting diode (LED) display technology, and more particularly, to a micro LED display panel. Background Art

[0002] Inorganic micro-pixel light-emitting diodes (also called micro-light-emitting diodes, micro-LEDs, or μ-LEDs) are becoming increasingly important for a variety of applications such as self-luminous micro-displays, visible light communications, and optogenetics. Compared to conventional LEDs, micro-LEDs have better output performance due to improved strain relaxation, higher light extraction efficiency, and uniform current distribution. Micro-LEDs also have other advantages over conventional LEDs, such as better thermal response, faster response, a wider operating temperature range, higher resolution, wider color gamut, higher contrast, lower power consumption, and the ability to operate at higher current densities.

[0003] A multicolor micro-LED display panel includes a micro-LED array consisting of a plurality of multicolor micro-LEDs, which are generally referred to as multicolor pixels. In a multicolor micro-LED display panel, it is advantageous to increase the density of micro-LEDs, which requires reducing the size and spacing of micro-LEDs. However, when the spacing between pixels is reduced, light emitted from a single micro-LED may propagate laterally to micro-LEDs adjacent to the single micro-LED, resulting in optical crosstalk between micro-LEDs. Summary of the invention

[0004] The disclosed embodiment provides a micro LED display panel. The micro LED display panel includes a micro LED array, the micro LED array includes a plurality of micro LEDs and a plurality of electrical connection structures, the electrical connection structures are arranged around the plurality of micro LEDs and are electrically connected to the plurality of micro LEDs. A plurality of light propagation channels are formed between two adjacent micro LEDs, and each light propagation channel includes at least one gap among a plurality of gaps formed between two adjacent electrical connection structures. From a top view of the micro LED array, the light propagation channel is curved.

[0005] The disclosed embodiment also provides a micro LED display panel. The micro LED display panel includes: a micro LED array including a plurality of micro LEDs; and a plurality of electrical connection structures, the electrical connection structures being arranged around the plurality of micro LEDs and electrically connected to the plurality of micro LEDs. The plurality of electrical connection structures include adjacent first electrical connection structures and second electrical connection structures. The first electrical connection structure includes a first side facing the second electrical connection structure. The second electrical connection structure includes a second side facing the first electrical connection structure. Both the first side and the second side are nonlinear.

[0006] Embodiments of the present disclosure also provide a method for reducing optical crosstalk between light-emitting units in a display panel. The display panel includes a plurality of light-emitting units and a plurality of electrical connection structures, the plurality of electrical connection structures being arranged around the plurality of light-emitting units and electrically connected to the plurality of light-emitting units. The plurality of electrical connection structures are spaced apart from each other to define a plurality of gaps therebetween. The method includes reflecting light emitted by one of the light-emitting units through at least a portion of one of the electrical connection structures arranged on a light propagation path of the light-emitting units. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Embodiments and aspects of the present disclosure will be explained in the following detailed description and accompanying drawings.The various features shown in the accompanying drawings are not drawn to scale.

[0008] Figure 1 A top view of a micro LED display panel in an embodiment of the present disclosure is schematically shown.

[0009] Figure 2 Schematically shows Figure 1 A top view of a single micro LED in the micro LED array of the illustrated embodiment and an electrical connection structure surrounding the single micro LED.

[0010] Figure 3 Schematically shows Figure 2 A cross-sectional view of the structure along the section line a-a'.

[0011] Figure 4 Schematically shows Figure 2 A cross-sectional view of the structure along the section line bb'.

[0012] Figure 5 Schematically shows Figure 2 A cross-sectional view of the structure along the section line c-c' or the section line d-d'.

[0013] Fig. 6A A top view of a micro LED array in an embodiment of the present disclosure is schematically shown.

[0014] Figure 6B Schematically shows Fig. 6A A magnified top view of the micro-LED array.

[0015] Figure 6C Schematically shows Fig. 6A A cross-sectional view of the structure along the section line e-e'.

[0016] Fig.6D Schematically shows Fig. 6A A cross-sectional view of the structure along the section line f-f'.

[0017] Fig. 6E Schematically shows Fig. 6A A cross-sectional view of the structure along the section line g-g'.

[0018] Figure 7 A top view of a micro LED array in an embodiment of the present disclosure is schematically shown.

[0019] Figure 8 A top view of a micro LED array in an embodiment of the present disclosure is schematically shown.

[0020] Fig.9A A top view of a micro LED array in an embodiment of the present disclosure is schematically shown.

[0021] Fig. 9B A top view of a micro LED array in an embodiment of the present disclosure is schematically shown.

[0022] Fig. 9C A top view of a micro LED array in an embodiment of the present disclosure is schematically shown.

[0023] Fig.10 A top view of a micro LED array in an embodiment of the present disclosure is schematically shown.

[0024] Fig.11 A top view of a micro LED array in an embodiment of the present disclosure is schematically shown.

[0025] Fig.12 Schematically shows Fig.11 A top view of a single micro LED in a micro LED array and the electrical connection structure around the single micro LED.

[0026] Fig.13 Schematically shows Fig.11 A cross-sectional view of the structure along the section line i-i'.

[0027] Fig.14 Schematically shows Fig.11 A cross-sectional view of the structure along the section line j-j'. DETAILED DESCRIPTION

[0028] Reference will now be made specifically to exemplary embodiments. Examples of these exemplary embodiments are shown in the accompanying drawings. The following description refers to the accompanying drawings, and the same numbers in different figures represent the same or similar elements, unless otherwise stated. The implementations set forth in the following description of exemplary embodiments do not represent all implementations consistent with the present disclosure. On the contrary, these implementations are merely examples of devices and methods consistent with the aspects related to the present disclosure as recorded in the attached claims. Specific aspects of the present disclosure will be described in more detail below. If the terms and definitions provided herein conflict with the terms and / or definitions incorporated by reference, the terms and definitions provided herein shall prevail.

[0029] Figure 1 FIG. 1 schematically shows a top view of a micro LED display panel 100 in an embodiment of the present disclosure. Figure 1 The micro LED display panel 100 includes a micro LED array 110 and a driving backplane 120. The micro LED array 110 includes a plurality of micro LEDs 200 and a plurality of electrical connection structures 230 disposed around the plurality of micro LEDs 200. The micro LED array 110 is disposed on the top surface of the driving backplane 120 and forms an image display area. The driving backplane 120 is disposed on the back side of the micro LED array 110. The area on the driving backplane 120 where the micro LED array 110 is not disposed is a non-functional area.

[0030] The driving backplane 120 is used to control the plurality of micro LEDs 200. In some embodiments, the driving backplane 120 may be a thin film transistor (TFT) board or an integrated circuit (IC) board.

[0031] In the micro LED array 110 , a plurality of micro LEDs 200 are arranged in an array on a top surface of a driving backplane 120 .

[0032] In the following description and drawings, the direction in which the multiple micro LEDs 200 are arranged along the top surface of the driving backplane 120 is the X direction, the direction along the top surface of the driving backplane 120 and perpendicular to the X direction is the Y direction, the top surface of the driving backplane 120 is located in the XY plane, and the direction perpendicular to the XY plane is the Z direction.

[0033] The electrical connection structure 230 is electrically connected to the micro LED 200 to provide power to the micro LED 200. The electrical connection structure 230 may be made of a conductive and opaque metal, such as Al, Au, Rh, Ag, Cr, Ti, Pt, Sn, Cu, etc., or a combination of two or more metal materials. The electrical connection structure 230 not only provides power to the micro LED 200, but also reflects light emitted by the micro LED 200.

[0034] The electrical connection structure 230 includes a plurality of top electrical connection structures 231 and a plurality of bottom electrical connection structures 232. Figures 2 to 5 As further described in detail, each of the plurality of micro-LEDs 200 includes two or more light-emitting mesas arranged from top to bottom in a vertical direction (Z direction). A top electrical connection structure 231 is electrically connected to the top of each of the two or more light-emitting mesas. Each of the bottom electrical connection structures 232 is electrically connected to the bottom of one of the two or more light-emitting mesas.

[0035] exist Figure 1In the illustrated embodiment, the bottom electrical connection structure 232 further includes a plurality of first bottom electrical connection structures 232a disposed between adjacent micro LEDs 200 arranged along the X direction, and a plurality of second bottom electrical connection structures 232b disposed between adjacent micro LEDs 200 arranged along the Y direction. In some alternative embodiments, the first bottom electrical connection structures 232a may be disposed between adjacent micro LEDs 200 arranged along the Y direction, and the second bottom electrical connection structures 232b may be disposed between adjacent micro LEDs 200 arranged along the X direction.

[0036] Figure 2 Schematically shows Figure 1 A top view of a single micro LED 200 and an electrical connection structure 230 surrounding the single micro LED 200 in the micro LED array 110 of the embodiment. Figure 3 Schematically shows Figure 2 A cross-sectional view of the structure along the section line a-a'. Figure 4 Schematically shows Figure 2 A cross-sectional view of the structure along the section line b-b'. Figure 5 Schematically shows Figure 2 A cross-sectional view of the structure along section line c-c' or section line d-d'.

[0037] refer to Figures 3 to 5 , the micro LED 200 includes at least two light-emitting mesas 210 stacked from top to bottom in a vertical direction (Z direction) and a conductive layer 220 located on the top and bottom sides of each light-emitting mesas 210. The conductive layer 220 includes a top conductive layer 221 disposed above each light-emitting mesas 210 and a bottom conductive layer 222 disposed below each light-emitting mesas 210. For each light-emitting mesas 210, the top conductive layer 221 is electrically connected to the top surface of the light-emitting mesas 210, and the bottom conductive layer 222 is electrically connected to the bottom surface of the light-emitting mesas 210. The conductive layer 220 is used to provide power to the corresponding light-emitting mesas 210.

[0038] exist Figures 3 to 5In the illustrated embodiment, at least two light-emitting mesas 210 include a first light-emitting mesas 211, a second light-emitting mesas 212, and a third light-emitting mesas 213, which are stacked from bottom to top in a vertical direction (Z direction), with the first light-emitting mesas 211 being located at the bottom. In some embodiments, the number of light-emitting mesas 210 may be two or four or more. In some embodiments, the first light-emitting mesas 211 emit red light, the second light-emitting mesas 212 emit green light, and the third light-emitting mesas 213 emit blue light. In some embodiments, the first light-emitting mesas 211 emit red light, the second light-emitting mesas 212 emit blue light, and the third light-emitting mesas 213 emit green light. In some embodiments, the bottom light-emitting mesas emit red light, and the top light-emitting mesas emit green light. In some embodiments, different light-emitting mesas 210 in the same micro LED 200 emit light of the same color. For example, the first light-emitting mesas 211, the second light-emitting mesas 212, and the third light-emitting mesas 213 in the same micro LED 200 all emit blue light, or all emit green light or red light. In at least two light-emitting mesas 210 stacked in the vertical direction, adjacent light-emitting mesas 210 are spaced apart in the vertical direction. In some embodiments, the spacings of adjacent light-emitting mesas 210 in the vertical direction are the same. In some embodiments, the spacings of adjacent light-emitting mesas 210 in the vertical direction can be set to be different as needed. In some embodiments, the top and bottom surfaces of each light-emitting mesas 210 are circular, and the diameter of the top surface of the light-emitting mesas 210 is smaller than the diameter of the bottom surface of the light-emitting mesas 210. For example, in Figures 3 to 5 In the illustrated embodiment, the top diameters of the first to third light-emitting mesas 211, 212, and 213 are all smaller than the bottom diameters. In some embodiments, the top and bottom surfaces of the light-emitting mesas 210 may also be non-circular, such as square, oval, etc. In some embodiments, the top surface area of ​​the light-emitting mesas 210 is smaller than the bottom surface area.

[0039] In some embodiments, at least two light-emitting mesas 210 are coaxially arranged, that is, the projections of the light-emitting mesas 210 in the vertical direction overlap. In some embodiments, the sizes of the light-emitting mesas 210 can be different, and the projections of the light-emitting mesas 210 in the vertical direction can partially overlap.

[0040] refer to Figures 2 to 5, the electrical connection structure 230 is disposed around the micro LED 200. Each electrical connection structure 230 is electrically connected to at least one conductive layer 220 of the micro LED 200 to provide power to the light-emitting mesa 210. The electrical connection structure 230 includes at least one top electrical connection structure 231 and at least one bottom electrical connection structure 232. At least one top electrical connection structure 231 is electrically connected to the top conductive layer 221 of each light-emitting mesa 210. Each bottom electrical connection structure 232 is electrically connected to the bottom conductive layer 222 of one light-emitting mesa 210. The bottom of the top electrical connection structure 231 contacts the driving backplane 120, but is not directly electrically connected to the driving backplane 120. The top electrical connection structure 231 can electrically connect the top conductive layer 221 to the negative pole of the external power supply. The bottom of each bottom electrical connection structure 232 contacts the driving backplane 120 and is electrically connected to the driving backplane 120. Each bottom electrical connection structure 232 can electrically connect the bottom conductive layer 222 to the positive pole of the external power supply.

[0041] refer to Figure 2 The bottom electrical connection structure 232 includes at least one first bottom electrical connection structure 232a and at least one second bottom electrical connection structure 232b. Figure 2 In the direction of the section line aa' in the figure, at least one second bottom electrical connection structure 232b is arranged along Figure 2 The top electrical connection structure 231 is arranged along the section line bb'. Figure 2 The middle section line c-c' and section line d-d' directions are set.

[0042] refer to Figures 3 to 5 The bottom conductive layer 222 includes a first bottom conductive layer 222a, a second bottom conductive layer 222b, and a third bottom conductive layer 222c. The first bottom conductive layer 222a is located at the bottom of the first light-emitting mesa 211, the second bottom conductive layer 222b is located at the bottom of the second light-emitting mesa 212, and the third bottom conductive layer 222c is located at the bottom of the third light-emitting mesa 213. The top conductive layer 221 includes a first top conductive layer 221a, a second top conductive layer 221b, and a third top conductive layer 221c. The first top conductive layer 221a is located at the top of the first light-emitting mesa 211, the second top conductive layer 221b is located at the top of the second light-emitting mesa 212, and the third top conductive layer 221c is located at the top of the third light-emitting mesa 213.

[0043] The top electrical connection structure 231 is electrically connected to all the top conductive layers 221 (i.e., the first top conductive layer 221a, the second top conductive layer 221b, and the third top conductive layer 221c) of each micro LED 200. The bottom electrical connection structure 232 is connected to one of the bottom conductive layers 222 of one of the micro LEDs 200 (i.e., the first bottom conductive layer 222a, the second bottom conductive layer 222b, or the third bottom conductive layer 222c).

[0044] exist Figure 2 In the illustrated embodiment, there are four top electrical connection structures 231, two of which are arranged along the direction of the section line c-c', and the other two are arranged along the direction of the section line d-d'. The four top electrical connection structures 231 are electrically connected to the top conductive layers 221 (the first top conductive layer 221a, the second top conductive layer 221b, and the third top conductive layer 221c) of all the light-emitting mesas 210 (the first light-emitting mesas 211, the second light-emitting mesas 212, and the third light-emitting mesas 213) of the micro-LED 200. The electrical connection structures 230 (including the four top electrical connection structures 231, the first bottom electrical connection structure 232a, and the second bottom electrical connection structure 232b) are arranged around the micro-LED 200 at intervals, and the gaps between adjacent electrical connection structures 230 are filled with an insulating medium 300.

[0045] refer to Figures 2 to 5 , part of the conductive layer 220 extends to and contacts the corresponding electrical connection structure 230 to form an electrical connection with the corresponding electrical connection structure 230 .

[0046] Specifically, Figure 2 and Figure 5 As shown, all top conductive layers 221 ( 221 a , 221 b , 221 b ) of the light emitting mesas 210 ( 211 , 212 , 213 ) extend to and contact the top electrical connection structure 231 disposed around the micro LED 200 to be electrically connected to the top electrical connection structure 231 .

[0047] like Figure 2 and Figure 3 As shown, the second bottom conductive layer 222b of the second light emitting mesa 212 extends to and contacts one of the first bottom electrical connection structures 232a (ie Figure 3 The left first bottom electrical connection structure 232a in the figure) is electrically connected to one of the first bottom electrical connection structures 232a. Figure 3 The right first bottom electrical connection structure 232a in FIG. 2 is connected to the adjacent micro LED.

[0048] like Figure 2 and Figure 4 As shown, the third bottom conductive layer 222c of the third light emitting mesa 213 extends to and contacts one of the second bottom electrical connection structures 232b (ie Figure 4 The second bottom electrical connection structure 232b on the left side of the middle portion is electrically connected to one of the second bottom electrical connection structures 232b. Figure 4 The second bottom electrical connection structure 232a on the middle right side is connected to the adjacent micro LED.

[0049] exist Figures 2 to 5 In the illustrated embodiment, the side surface of the electrical connection structure 230 contacts the end surface of the corresponding conductive layer 220. In some alternative embodiments, the electrical connection structure 230 may further include a protrusion extending to and contacting the corresponding conductive layer 220. The end surface of the protrusion may contact the end surface of the corresponding conductive layer 220. Alternatively, the protrusion may overlap and contact the end of the corresponding conductive layer 220. Figures 2 to 5 Only one example of the shape of the extension portion of the conductive layer 220 is shown, but the extension portion of the conductive layer 220 may have various shapes and arrangements, not limited to Figures 2 to 5 In addition, for simplicity, only Figure 2 FIG. 2 shows a top view of the extension of the conductive layer 220, but not FIG. Figure 1 Shown in.

[0050] refer to Figure 1 In some embodiments, the top electrical connection structures 231 of adjacent micro LEDs 200 are electrically connected to each other, and the bottom electrical connection structures 232 of adjacent micro LEDs 200 are insulated from each other.

[0051] refer to Figures 3 to 5 In the embodiment of the present disclosure, the gaps between adjacent light-emitting mesas 210 and between the electrical connection structure 230 and the light-emitting mesas 210 are filled with an insulating medium 300. The insulating medium 300 is transparent. In the embodiment of the present disclosure, the material of the insulating medium 300 may include one or more combinations of SiO2, SiON, Al2O3, and SiN.

[0052] refer to Figures 3 to 5The micro LED 200 further includes a bottom connection table 240, which is located between the bottom light-emitting table 210 (i.e., the first light-emitting table 211) and the driving backplane 120, and is electrically connected to the driving backplane 120 and the bottom light-emitting table 210 (i.e., the first light-emitting table 211). The micro LED 200 further includes a top connection table 214, which is located between the first light-emitting table 211 and the first top conductive layer 221a, and is electrically connected to the first light-emitting table 211 and the first top conductive layer 221a. The material of the bottom connection table 240 and the top connection table 214 is metal, including one or more of Al, Au, Rh, Ag, Cr, Ti, Pt, Sn, Cu, AuSn, TiW, etc. In some embodiments, the top and bottom surfaces of the light-emitting mesas 210 (mesas 211, 212, 213) are both circular, and the top diameter of each light-emitting mesas 210 is smaller than the bottom diameter. In these embodiments, the top surface of the bottom connecting mesas 240 is also circular, the top diameter of the bottom connecting mesas 240 is the same as the bottom diameter of the bottommost light-emitting mesas 210 (i.e., the first light-emitting mesas 211), and the top diameter of the bottom connecting mesas 240 is smaller than the bottom diameter of the bottom connecting mesas 240. The first bottom conductive layer 222a is disposed between the bottom connecting mesas 240 and the first light-emitting mesas 211, and an ohmic contact layer can be formed between the bottom connecting mesas 240 and the first light-emitting mesas 211. The first bottom conductive layer 222a and the bottom connecting mesas 240 can form an omni-directional reflector (ODR) structure with high reflection efficiency.

[0053] The conductive layer 220 is transparent. Each conductive layer 220 can be a combination of one or more of a plurality of transparent conductive oxide (TCO) thin layers, such as an indium tin oxide (ITO) layer, an antimony doped zinc oxide (AZO) layer, an antimony doped tin oxide (ATO) layer, and a fluorine doped tin oxide (FTO) layer.

[0054] refer to Figures 3 to 5 The micro LED 200 further includes a top insulating dielectric layer 250. The top insulating dielectric layer 250 continuously covers the top surface of the micro LED array 110. The top insulating dielectric layer 250 is transparent, and its material is a combination of one or more of SiO2, SiN, SiON or Al2O3.

[0055] refer to Figures 3 to 5, the micro-LED 200 further includes a micro-lens 260. The micro-lens 260 is located above the top insulating dielectric layer 250 and covers the pixel area of ​​the micro-LED 200. The bottom diameter of the micro-lens 260 is greater than the maximum diameter of the light-emitting mesa 210. The thickness of the micro-lens 260 is less than or equal to 10 μm. In some embodiments, the material of the micro-lens 260 is selected from silicon dioxide, photoresist, etc.

[0056] refer to Figures 1 to 5 In some embodiments, the thickness of the light-emitting mesa 210 may range from 0.3 μm to 3.5 μm, and the bottom diameter of the light-emitting mesa 210 may range from 0.5 μm to 50 μm, for example. The thickness of the micro LED 200 may range from 1 μm to 10 μm, for example, and the diameter of the micro LED 200 may range from 2 μm to 200 μm, for example. The size of the micro LED display panel 100 may range from 500 μm to 50000 μm, for example. The resolution of the micro LED array 110 in the micro LED display panel 100 may be, for example, one of 320×240, 640×480, 1920×1080, or 2560×1440.

[0057] refer to Figures 3 to 5 The driving backplane 120 includes a solder joint group 121 corresponding to the micro LED 200. The solder joint group 121 includes a first solder joint 1211, a second solder joint 1212, and a third solder joint 1213. The first solder joint 1211 corresponds to and is electrically connected to the bottom connection table 240, the second solder joint 1212 corresponds to and is electrically connected to the first bottom electrical connection structure 232a, and the third solder joint 1213 corresponds to and is electrically connected to the second bottom electrical connection structure 232b.

[0058] Reference again Figure 1 Each micro LED 200 is surrounded by an electrical connection structure 230, and a gap 270 is defined between adjacent electrical connection structures 230. The gap 270 is filled with an insulating medium 300 (such as Figures 3 to 5 Each gap 270 is straight and extends along the direction in which the micro LEDs 200 are arranged, thereby forming a light propagation channel so that the light emitted by each micro LED 200 propagates laterally. Therefore, undesirable optical crosstalk may occur between adjacent micro LEDs 200. For example, Figure 1As shown, the gap 270 includes at least a first gap 271 between the adjacent top electrical connection structure 231 and the first bottom electrical connection structure 232a arranged along the Y direction, and a second gap 272 between the adjacent top electrical connection structure 231 and the second bottom electrical connection structure 232b arranged along the X direction. The first gaps 271 are all straight and extend along the X direction, parallel to the direction in which the adjacent micro LEDs 200a and 200b are arranged. Therefore, the first gaps 271 form a light propagation channel 371, through which the light emitted by the micro LED 200a can propagate and reach the micro LED 200b, and the light emitted by the micro LED 200b can propagate and reach the micro LED 200a. Similarly, the second gaps 272 are all straight and extend along the Y direction, parallel to the direction in which the adjacent micro LEDs 200a and 200c are arranged. Therefore, the second gap 272 forms a light propagation channel 372, through which light emitted by micro LED 200a can reach micro LED 200c, and light emitted by micro LED 200c can reach micro LED 200a. Therefore, the lateral light propagating through the straight gap 270 between adjacent electrical connection structures 230 may cause optical crosstalk between adjacent micro LEDs 200, thereby reducing the light emission efficiency of the micro LED display panel 100.

[0059] In order to reduce the optical crosstalk between adjacent micro-LEDs 200 caused by the straight gaps 270 between adjacent electrical connection structures 230, in some embodiments of the present disclosure, the light propagation channel formed between adjacent micro-LEDs is curved in the top view of the micro-LED array. The term "curved" used in the present disclosure and claims means that each light propagation channel is curved, tortuous or arc-shaped, and is non-linear, that is, non-straight. The term "adjacent" means that there are no other objects between two adjacent objects except the insulating medium 300. The light propagation channel may include one or more gaps formed between adjacent electrical connection structures 230. In some embodiments, the sides of adjacent electrical connection structures 230 facing each other are also configured to be curved, that is, curved, tortuous or arc-shaped, and are substantially parallel to each other. Therefore, the gaps 270 defined between adjacent electrical connection structures 230 are curved. For example, as further explained below, each top electrical connection structure 231 is formed to have a "+"-shaped cross-section, and each bottom electrical connection structure 232 is formed with four sides (as a quadrilateral). Therefore, each gap 270 may have at least two portions extending in directions that are not parallel to each other, and thus each gap 270 may be curved. As another example, each gap 270 may be curved, or may include at least one curved portion. Therefore, a light propagation channel including at least one gap 270 may be curved.

[0060] Fig. 6AThe top view of the micro LED array 600 in the embodiment of the present disclosure is schematically shown. Figure 6B Schematically shows Fig. 6A A magnified top view of the micro-LED array. Figure 6C Schematically shows Fig. 6A A cross-sectional view of the structure along the section line e-e'. Fig.6D Schematically shows Fig. 6A A cross-sectional view of the structure along the section line f-f'. Fig. 6E Schematically shows Fig. 6A A cross-sectional view of the structure along the section line g-g'.

[0061] like Fig. 6A As shown, the micro LED array 600 includes a plurality of micro LEDs 200 and a plurality of electrical connection structures 230, which are arranged around the plurality of micro LEDs 200 and electrically connected to the plurality of micro LEDs 200. The plurality of electrical connection structures 230 include a plurality of top electrical connection structures 231 and a plurality of bottom electrical connection structures 232. The plurality of bottom electrical connection structures 232 include a plurality of first bottom electrical connection structures 232a and a plurality of second bottom electrical connection structures 232b. The plurality of first bottom electrical connection structures 232a and the plurality of micro LEDs 200 are alternately arranged along the X direction. The plurality of second bottom electrical connection structures 232b and the plurality of micro LEDs 200 are alternately arranged along the Y direction. The plurality of top electrical connection structures 231 and the plurality of first bottom electrical connection structures 232a are alternately arranged along the Y direction. The plurality of top electrical connection structures 231 and the plurality of second bottom electrical connection structures 232b are alternately arranged along the X direction. A plurality of light propagation channels 371 and 372 are formed between adjacent micro LEDs 200. A plurality of gaps 270 are defined between adjacent electrical connection structures 230. Each light propagation channel 371 or 372 includes at least one gap 270. Fig. 6A As shown in the top view of the micro-LED array 600, the light propagation channels 371 and 372 are curved. Each top electrical connection structure 231 is formed to have a "+"-shaped cross-section, and each bottom electrical connection structure 232 is formed with four sides (as a quadrilateral), each side being substantially parallel to a side of an adjacent top electrical connection structure 231. Therefore, each gap 270 defined between adjacent electrical connection structures 230 is curved and includes two portions extending in directions that are not parallel to each other (i.e., intersecting each other). Each gap 270 forms a curved light propagation channel. Each curved light propagation channel 370 reduces the intensity of light emitted from one micro LED 200 and propagated through the light propagation channel to an adjacent micro LED 200. Specifically, as Fig. 6AAs shown, the gap 270 includes at least a first gap 271 and a second gap 272, the first gap 271 is located between the top electrical connection structure 231 and the first bottom electrical connection structure 232a adjacently arranged along the Y direction, and the second gap 272 is located between the top electrical connection structure 231 and the second bottom electrical connection structure 232b adjacently arranged along the X direction. The first gap 271 constitutes a light propagation channel 371 between the micro LEDs 200a and 200b. The first gap 271 includes a first portion 271a extending along the first direction A1, and a second portion 271b extending along the second direction B1. The first direction A1 is not parallel to the second direction B1. In other words, the first direction A1 intersects with the second direction B1. The angle θ1 between the first direction A1 and the second direction B1 is greater than 0° and less than 180°. Similarly, the second gap 272 constitutes a light propagation channel 372 between the micro LEDs 200a and 200c. The second gap 272 includes a first portion 272a extending along the first direction A2 and a second portion 272b extending along the second direction B2. The first direction A2 and the second direction B2 are not parallel. An angle θ2 between the first direction A2 and the second direction B2 is greater than 0° and less than 180°.

[0062] Figure 6B Schematically shows Fig. 6A FIG. 6 is an enlarged top view of the micro LED array 600. Figure 6BAs shown, the top electrical connection structure 231 includes a side 2310 facing the first bottom electrical connection structure 232a, and the first bottom electrical connection structure 232a includes a side 232a0 facing the side 2310 of the top electrical connection structure 231. The side 2310 of the top electrical connection structure 231 and the side 232a0 of the first bottom electrical connection structure 232a are both non-linear, that is, curved. The side 2310 of the top electrical connection structure 231 includes portions 2311, 2312, and 2313 extending in different directions. At least one of the portions 2311, 2312, and 2313 is not parallel to the X direction. The side 232a0 of the first bottom electrical connection structure 232a includes portions 232a1, 232a2, and 232a3 extending in different directions. At least one of the portions 232a1, 232a2, and 232a3 is not parallel to the X direction. The first gap 271 is defined between the side 2310 of the top electrical connection structure 231 and the side 232a0 of the first bottom electrical connection structure 232a. The side 2310 of the top electrical connection structure 231 and the side 232a0 of the first bottom electrical connection structure 232a are consistent with each other. In other words, the size and angle of the parts 2311, 2312 and 2313 of the side 2310 of the top electrical connection structure 231 correspond to the size and angle of the parts 232a1, 232a2 and 232a3 of the side 232a0 of the first bottom electrical connection structure 232a. The side 232a0 of the first bottom electrical connection structure 232a defines a protrusion protruding toward the first bottom electrical connection structure 232a. The side 2310 of the top electrical connection structure 231 defines a recess for accommodating the protrusion defined by the side 232a0 of the first bottom electrical connection structure 232a.

[0063] like Figure 6B As shown by the solid arrow “L1” in FIG. 1 , a portion of the light L1 emitted by the micro LED 200a along the X direction reaches the side 232a4 of the first bottom electrical connection structure 232a facing the micro LED 200a, and a portion of the light L1 is reflected back to the micro LED 200a by the side 232a4 of the first bottom electrical connection structure 232a. Figure 6BAs shown by the hollow arrow "L2" in FIG. 2 , a portion of the light L2 emitted by the micro LED 200a enters the light propagation channel 371 formed by the first gap 271 defined between the first bottom electrical connection structure 232a and the top electrical connection structure 231, and is reflected multiple times by the sidewall of the first gap 271 formed by the side 2310 of the top electrical connection structure 231 and the side 232a0 of the first bottom electrical connection structure 232a before the light reaches the adjacent micro LED 200b. Therefore, after multiple reflections, the intensity of the light L2 propagating through the light propagation channel 371 and reaching the adjacent micro LED 200b is significantly reduced. Therefore, the curved light propagation channel 371 including the first gap 271 defined between the first bottom electrical connection structure 232a and the top electrical connection structure 231 significantly reduces the optical crosstalk between the micro LEDs 200a and 200b arranged along the X direction. Similarly, the curved light propagation channel 372 including the curved second gap 272 defined between the second bottom electrical connection structure 232b and the top electrical connection structure 231 significantly reduces the optical crosstalk between the micro LEDs 200a and 200c arranged along the Y direction. Therefore, the light emission efficiency of the micro LED array 110 can be improved.

[0064] Figure 6C Schematically shows Fig. 6A A cross-sectional view of the structure along section line e-e'. Fig.6D Schematically shows Fig. 6A A cross-sectional view of the structure along section line f-f'. Fig. 6E Schematically shows Fig. 6A A cross-sectional view of the structure along the section line g-g'. FIG. 6C to FIG. 6E Each micro LED 200 has Figures 3 to 5 The micro LED 200 in FIG. 1 has a similar structure, and a detailed description thereof will not be repeated here. Figure 6C As shown, each first bottom electrical connection structure 232a is electrically connected to the second bottom conductive layer 222b of the micro LED 200. Fig.6D As shown, each second bottom electrical connection structure 232b is electrically connected to the third bottom conductive layer 222c of the micro LED 200. Fig. 6E As shown, each top electrical connection structure 231 is electrically connected to the first top conductive layer 221 a , the second top conductive layer 221 b , and the third top conductive layer 221 c of all micro LEDs 200 .

[0065] Reference again Fig. 6A ( FIG. 6A to FIG. 6EThe width W of the first gap 271 and the second gap 272 may be 50 nm to 2000 nm (not drawn to scale). The smaller the width of the gap portion, the better the optical isolation effect provided by the gap. The maximum dimension d1 of the first bottom electrical connection structure 232a along the Y direction is equal to or greater than the shortest spacing d2 of the adjacent top electrical connection structure 231 along the Y direction. The dimension d3 of the second bottom electrical connection structure 232b along the X direction is equal to or greater than the shortest spacing d4 of the two adjacent top electrical connection structures 231 along the X direction.

[0066] exist FIG. 6A to FIG. 6E In the illustrated embodiment, each gap 270 (including the first gap 271 and the second gap 272) includes two portions, each portion extending in a direction intersecting the arrangement direction of the adjacent micro LEDs 200. In some alternative embodiments, each gap may include more than two portions, and at least one portion extends in a direction intersecting the arrangement direction of the adjacent micro LEDs 200.

[0067] exist FIG. 6A to FIG. 6E In the illustrated embodiment, each bottom electrical connection structure 232 is formed with four sides (as a quadrilateral) as described above. In some alternative embodiments, each bottom electrical connection structure 232 is formed with more or less than four sides, and each top electrical connection structure 231 has a "+" shaped cross section. Figure 7 A top view of a micro LED array 700 according to such an embodiment is schematically shown.

[0068] like Figure 7 As shown, each bottom electrical connection structure 232 (including the first and second bottom electrical connection structures 232a and 232b) has six sides (as a hexagon). Two adjacent sides of the bottom electrical connection structure 232 are substantially parallel to two sides of the adjacent top electrical connection structure 231 having a "+"-shaped cross section, thereby defining a gap 270, each gap 270 being nonlinear and including two mutually intersecting parts. The gap 270 includes a first gap 271 and a second gap 272, each first gap 271 being defined between the top electrical connection structure 231 and the first bottom electrical connection structure 232a disposed adjacent to each other in the Y direction, and each second gap 272 being defined between the top electrical connection structure 231 and the second bottom electrical connection structure 232b disposed adjacent to each other in the X direction. Both the first gap 271 and the second gap 272 are nonlinear, i.e., curved. Therefore, each first gap 271 forms a curved light propagation channel 371 between adjacent micro LEDs 200 arranged along the X direction, and each second gap 272 forms a curved light propagation channel 372 between adjacent micro LEDs 200 arranged along the Y direction. Figure 7 The other elements and their sizes of the micro LED array 700 shown in FIG. Fig. 6A and Figure 6B The elements and sizes of the micro LED array 600 shown in FIG. 6 are the same, and a detailed description of these elements will not be repeated here.

[0069] exist FIG. 6A to FIG. 6E and Figure 7 In the illustrated embodiment, each gap 270 (including the first and second gaps 271 and 272) includes a straight portion. In some alternative embodiments, each gap 270 may include at least one curved portion, or each gap 270 may be curved. Figure 8 A top view of a micro LED array 800 according to such an embodiment is schematically shown.

[0070] like Figure 8 As shown, each top electrical connection structure 231 has a substantially square shape with four concave sides, and each bottom electrical connection structure 232 has a substantially rectangular shape with convex sides facing the adjacent top electrical connection structure 231. Therefore, each gap 270 (including the first and second gaps 271 and 272) between the top electrical connection structure 231 and the bottom electrical connection structure 232 is arc-shaped, that is, curved. Therefore, the light propagation channels 371 and 372 including the first and second gaps 271 and 272, respectively, are curved. The light emitted from the micro LED 200a and entering the arc-shaped light propagation channels 371 and 372 is reflected multiple times by the arc-shaped sidewalls of the arc-shaped gap 270 before reaching the adjacent micro LED 200b or 200c, so the intensity of the light reaching the adjacent micro LED 200b or 200c is significantly reduced due to the multiple reflections in the arc-shaped gap 270. Therefore, the arc-shaped gap 270 reduces the optical crosstalk between the adjacent micro LEDs 200.

[0071] Fig.9A Schematically shows a top view of a micro LED array 900A in another embodiment of the present disclosure. Fig.9AAs shown, each top electrical connection structure 231 is formed with a circular cross-section, with its convex side facing the adjacent bottom electrical connection structure 232, and each bottom electrical connection structure 232 is formed with an irregular shape, which is roughly rectangular, and all four sides are partially concave. Two of the four concave surfaces of each bottom electrical connection structure 232 face the adjacent micro LED 200, and the curvature of these two concave surfaces is generally similar to the curvature of the adjacent surface of the micro LED 200 facing the bottom electrical connection structure 232. In some embodiments, the curvatures of the respective surfaces of the bottom electrical connection structure 232 and the micro LED 200 are the same, so that the two surfaces are parallel to each other, and the gap between the bottom electrical connection structure 232 and the adjacent micro LED 200 has a uniform width. In some alternative embodiments, the curvatures of the two surfaces may be different, so that the two surfaces are not parallel to each other, and the gap between the bottom electrical connection structure 232 and the adjacent micro LED 200 has a non-uniform width. Similarly, the other two of the four concave surfaces of the bottom electrical connection structure 232 face the adjacent top electrical connection structure 231. The curvature of the other two concave surfaces is generally similar to the curvature of the adjacent top electrical connection structure 231. In some embodiments, the curvatures of the two concave surfaces are the same, so that the two concave surfaces are parallel to each other, and the gap between the bottom electrical connection structure 232 and the adjacent top electrical connection structure 231 has a uniform width. In some alternative embodiments, the curvatures of the two concave surfaces may be different, so that the two surfaces are not parallel to each other, and the gap between the bottom electrical connection structure 232 and the adjacent top electrical connection structure 231 has a non-uniform width.

[0072] Therefore, the gaps 270 defined between adjacent electrical connection structures 230 include a first gap 271 defined between an adjacent top electrical connection structure 231 and a first bottom electrical connection structure 232a, a second gap 272 defined between an adjacent top electrical connection structure 231 and a second bottom electrical connection structure 232b, and a third gap 273 defined between an adjacent first bottom electrical connection structure 232a and a second bottom electrical connection structure 232b. The first gap 271 and the second gap 272 are both arc-shaped, i.e., curved. The third gap 273 is straight.

[0073] Light propagation channels can be defined between diagonally arranged adjacent micro-LEDs. Fig.9AAs shown, a light propagation channel 370 is defined between the micro LEDs 200a and 200d arranged along the hypothetical diagonal line h-h'. The light propagation channel 370 includes a first gap 271, a second gap 272, and third gaps 273a and 273b. Since the first gap 271 and the second gap 272 are both arc-shaped, that is, curved, the light propagation channel 370 is also curved. Before the light emitted from the micro LED 200a and entering the light propagation channel 370 reaches the adjacent micro LED 200d, it will be reflected multiple times by the side walls of the gaps 271, 272, 273a and 273b, so the intensity of the light reaching the adjacent micro LED 200d will be significantly reduced due to the multiple reflections in the gaps 271, 272, 273a and 273b. Therefore, the curved light propagation channel 370 reduces the optical crosstalk between the adjacent micro LEDs 200.

[0074] In the micro LED array 900A, each third gap 273 (including 273a and 273b) extends along an imaginary diagonal line connecting the centers of diagonally arranged adjacent micro LEDs 200. In addition, the diagonally arranged third gaps 273 are aligned with each other. Fig.9A As shown, the third gap 273a and the third gap 273b both extend along a diagonal line hh' that connects the centers of diagonally arranged adjacent micro LEDs 200a and 200d.

[0075] In some alternative embodiments, adjacent ones of the diagonally arranged third gaps 273 a and 273 b may extend in the same direction but may be parallel to each other. Fig. 9B Schematically shows a partial top view of the micro LED array 900B according to this embodiment. Fig. 9B As shown, the third gaps 273a and 273b extend in the same direction and are not aligned with the diagonal line h-h'. Therefore, the third gaps 273a and 273b are not aligned with each other, but are parallel to each other. In the above arrangement, compared with the arrangement in which the third gaps 273a and 273b are aligned with the diagonal line h-h', the light emitted from the micro LED 200a and entering the light propagation channel 370 (including the first gap 271, the second gap 272, and the third gaps 273a and 273b) is reduced. Therefore, the optical crosstalk between the diagonally arranged micro LEDs 200a and 200d is further reduced.

[0076] In some alternative embodiments, adjacent ones of the diagonally arranged third gaps 273 a and 273 b may be aligned with each other, but may not be aligned with a hypothetical diagonal line connecting the centers of the diagonally arranged adjacent micro LEDs 200 . Fig. 9C Schematically shows a partial top view of the micro LED array 900C according to this embodiment. Fig. 9CAs shown, the third gap 273a is aligned with the third gap 273b, but the extension direction of the third gaps 273a and 273b is not connected to the center of the micro LED 200, that is, not aligned with the diagonal line h-h'. In the above arrangement, compared with the arrangement in which the third gaps 273a and 273b are aligned with the diagonal line h-h', the light emitted from the micro LED 200a and entering the light propagation channel 370 (including the first gap 271, the second gap 272, and the third gaps 273a and 273b) is reduced. Therefore, the optical crosstalk between adjacent micro LEDs 200 is further reduced.

[0077] Fig.10 FIG. 1 schematically shows a top view of a micro LED array 1000 in another embodiment of the present disclosure. Fig.10 As shown, each top electrical connection structure 231 has a "+" shaped cross section, and each bottom electrical connection structure 232 has an "L" shaped cross section. Each gap 270 is nonlinear and includes three parts, and the extension direction of each part intersects the extension direction of the adjacent part, thereby reducing the intensity of light emitted from the micro LED 200 and transmitted to its adjacent micro LED 200. Specifically, as shown in FIG. Fig.10As shown, the gap 270 includes at least a first gap 271 and a second gap 272. The first gap 271 is located between the top electrical connection structure 231 and the first bottom electrical connection structure 232a arranged adjacently in the Y direction, and the second gap 272 is located between the top electrical connection structure 231 and the second bottom electrical connection structure 232b arranged adjacently in the X direction. The first gap 271 constitutes a light propagation channel 371 between the micro LED 200a and the micro LED 200b. The second gap 272 constitutes a light propagation channel 372 between the micro LED 200a and the micro LED 200c. The first gap 271 includes a first portion 271a extending in the X direction, a second portion 271b extending in the Y direction, and a third portion 271c extending in the X direction. Since the second portion 271b extends in the Y direction, and the Y direction intersects with the X direction of the extension direction of the adjacent portions 271a and 271c, the light propagation channel 371 is nonlinear, that is, curved. The light emitted from the micro LED 200a enters the curved light propagation channel 371, and is reflected multiple times by the side walls of the first to third parts 271a to 271c of the first gap 271 when propagating through the light propagation channel 371 before the light reaches the adjacent micro LED 200b. Therefore, the intensity of the light propagating through the curved light propagation channel 371 is significantly reduced. Similarly, the second gap 272 includes a first part 272a extending in the Y direction, a second part 272b extending in the X direction, and a third part 272c extending in the Y direction. Since the second part 272b extends in the X direction, and the X direction intersects with the Y direction in which the adjacent parts 272a and 272c extend, the light propagation channel 372 is nonlinear, that is, curved. The light emitted from the micro LED 200a enters the light propagation channel 372, and is reflected multiple times by the side walls of the first to third parts 272a to 272c of the second gap 272 when propagating through the light propagation channel 372 before the light reaches the adjacent micro LED 200c. Therefore, the intensity of light propagating through the light propagation channel 372 is significantly reduced. Therefore, the curved light propagation channel 371 reduces the optical crosstalk between the micro LEDs 200a and 200b arranged along the X direction, and the curved light propagation channel 372 reduces the optical crosstalk between the micro LEDs 200a and 200c arranged along the Y direction, thereby improving the luminous efficiency of the micro LED array 1000.

[0078] Fig.11 A top view of the micro LED array 1100 in an embodiment of the present disclosure is schematically shown. Fig.12 Schematically shows Fig.11 A top view of a single micro LED 200 ′ and an electrical connection structure 230 surrounding the single micro LED 200 ′ in the micro LED array 1100 of the illustrated embodiment. Fig.13 Schematically shows Fig.11A cross-sectional view of the structure along the section line i-i'. Fig.14 Schematically shows Fig.11 A cross-sectional view of the structure along the section line j-j'.

[0079] like Fig.13 and Fig.14 As shown, each micro-LED 200' includes two light-emitting mesas 210, namely a first light-emitting mesas 211 and a second light-emitting mesas 212. Figure 12 to Figure 14 As shown, the electrical connection structure 230 includes a top electrical connection structure 231 ( 221 a and 221 b ) electrically connected to the top conductive layer 221 ( 221 a and 221 b ) of each light emitting mesa 210 ( 211 and 212 ). Fig.12 and Fig.14 ), and a bottom electrical connection structure 232 ( Fig.12 and Fig.13 ).for Figure 12 to Figure 14 For descriptions of other components, refer to Figures 2 to 5 The description of the related components will not be repeated here.

[0080] Reference again Fig.11 , each top electrical connection structure 231 is disposed between adjacent micro LEDs 200' arranged along the X direction and extends along the Y direction. Each bottom electrical connection structure 232 is disposed between adjacent micro LEDs 200' arranged along the Y direction. A gap 270 is defined between adjacent electrical connection structures 230 arranged along the X direction, that is, between adjacent bottom electrical connection structures 232 and top electrical connection structures 231. Each gap 270 may be nonlinear, that is, curved. That is, each gap 270 may have at least two portions extending in directions that are not parallel to each other, or each gap 270 may be arc-shaped, or may include at least one arc-shaped portion.

[0081] For example, in Fig.11In the illustrated micro LED array 1100, the gap 270 between the adjacent bottom electrical connection structure 232 and the top electrical connection structure 231 is nonlinear and includes a first portion 270a extending along a first direction A and a second portion 270b extending along a second direction B. The first direction A and the second direction B are not parallel to each other. In other words, the first direction A intersects the second direction B. The angle θ between the first direction A and the second direction B is greater than 0° and less than 180°. The gap 270 constitutes a light propagation channel 370 between the micro LED 200a' and the micro LED 200b'. Therefore, the light emitted from the micro LED 200a' enters the light propagation channel 370 and is reflected multiple times by the side walls of the first and second portions 270a and 270b of the gap 270 as it propagates through the light propagation channel 370 before the light reaches the adjacent micro LED 200b'. Therefore, the curved light propagation channel 370 reduces the optical crosstalk between the micro LEDs 200a' and 200b' arranged along the Y direction.

[0082] According to an embodiment of the present disclosure, the light propagation channel between adjacent micro LEDs includes gaps defined between electrical connection structures, which are curved, so that multiple electrical connection structures can provide optical isolation and reduce crosstalk between adjacent micro LEDs, thereby improving luminous efficiency.

[0083] In the foregoing description, embodiments have been described with reference to many specific details, which may vary from embodiment to embodiment. Certain adjustments and modifications may be made to the described embodiments. Other embodiments will be apparent to those skilled in the art from the description and practice of the invention disclosed herein. The description and examples should be regarded as exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims. The order of steps shown in the figures is also for illustrative purposes only and is not intended to be limited to any particular order of steps. Therefore, it will be appreciated by those skilled in the art that these steps may be performed in different orders when implementing the same method.

[0084] In the drawings and the specification, exemplary embodiments have been disclosed. However, various changes and modifications may be made to these embodiments. Therefore, although specific terms are used, they are used only in a general and descriptive sense and not for limiting purposes.

Claims

1. A micro LED display panel, characterized in that: include: A micro LED array, the micro LED array comprising: a plurality of micro LEDs; and A plurality of electrical connection structures are disposed around the plurality of micro LEDs and electrically connected to the plurality of micro LEDs, A plurality of light propagation channels are formed between adjacent micro-LEDs, each light propagation channel includes at least one gap among a plurality of gaps defined between adjacent electrical connection structures, and From a top view of the micro LED array, the light propagation channel is curved.

2. The micro LED display panel according to claim 1, characterized in that: At least one of the plurality of gaps is non-linear when viewed from the top plan view.

3. The micro LED display panel according to claim 1, characterized in that: At least one of the plurality of gaps includes at least a first portion extending along a first direction and a second portion extending along a second direction, the first direction intersecting the second direction.

4. The micro LED display panel according to claim 3, characterized in that: An angle between the first direction and the second direction is greater than 0° and less than 180°.

5. The micro LED display panel according to claim 1, characterized in that: Each of the plurality of micro LEDs includes two or more light-emitting mesas, and the light-emitting mesas are arranged from top to bottom along a vertical direction.

6. The micro LED display panel according to claim 5, characterized in that: Each of the plurality of micro-LEDs further includes a dielectric material filled between the light emitting mesas, around the electrical connection structure, and around the micro-LED.

7. The micro LED display panel according to claim 5, characterized in that: The plurality of electrical connection structures include: a plurality of top electrical connection structures configured to be electrically connected to a top of each of the two or more light-emitting mesas; and a plurality of bottom electrical connection structures, each bottom electrical connection structure configured to be electrically connected to a bottom of one of the two or more light-emitting mesas.

8. The micro LED display panel according to claim 1, characterized in that: At least one gap of the plurality of gaps includes an arcuate portion.

9. The micro LED display panel according to claim 1, characterized in that: At least one gap among the plurality of gaps is arc-shaped.

10. The micro LED display panel according to claim 1, characterized in that: Each of the plurality of micro LEDs includes a first light emitting mesa, a second light emitting mesa, and a third light emitting mesa vertically arranged from top to bottom.

11. The micro LED display panel according to claim 10, characterized in that: The first light-emitting mesa emits blue light, the second light-emitting mesa emits green light, and the third light-emitting mesa emits red light.

12. The micro LED display panel according to claim 10, characterized in that: The first light-emitting mesa emits green light, the second light-emitting mesa emits blue light, and the third light-emitting mesa emits red light.

13. The micro LED display panel according to claim 1, characterized in that: Also included is a driving backplane formed on the back side of the micro LED array and configured to control the plurality of micro LEDs.

14. The micro LED display panel according to claim 13, characterized in that: Each of the plurality of micro-LEDs includes two or more light-emitting mesas, and the light-emitting mesas are vertically arranged from top to bottom. The micro LED further includes: a bottom connecting table, which is arranged between the bottommost light-emitting table and the driving backplane.

15. The micro LED display panel according to claim 14, characterized in that: The plurality of electrical connection structures include a plurality of bottom electrical connection structures, each of which is configured to be electrically connected to the bottom of one of the two or more light-emitting mesas, The driving backplane comprises: a first solder joint electrically connected to the bottom connection mesa; and A second solder joint is electrically connected to at least one of the plurality of bottom electrical connection structures.

16. The micro LED display panel according to claim 1, characterized in that: Also included is a top insulating dielectric layer continuously formed on the top surface of the micro LED array.

17. The micro LED display panel according to claim 16, characterized in that: The top insulating dielectric layer is transparent.

18. The micro LED display panel according to claim 16, characterized in that: It also includes a plurality of micro lenses disposed on the top insulating dielectric layer, each of the micro lenses covering a pixel display area of ​​the micro LED.

19. The micro LED display panel according to claim 1, characterized in that: The width of each gap ranges from 50nm to 2000nm.

20. The micro LED display panel according to claim 1, characterized in that: The plurality of electrical connection structures include a plurality of top electrical connection structures and a plurality of bottom electrical connection structures alternately arranged along a first direction, The maximum dimension of one of the bottom electrical connection structures is equal to or greater than the shortest spacing between adjacent top electrical connection structures along the first direction.

21. The micro LED display panel according to claim 1, characterized in that: The plurality of electrical connection structures include a plurality of top electrical connection structures and a plurality of bottom electrical connection structures, The plurality of bottom electrical connection structures include a plurality of first bottom electrical connection structures and a plurality of second bottom electrical connection structures, The plurality of first bottom electrical connection structures and the plurality of micro LEDs are arranged alternately along a first direction, The plurality of second bottom electrical connection structures and the plurality of micro LEDs are alternately arranged along a second direction, The plurality of top electrical connection structures and the plurality of first bottom electrical connection structures are alternately arranged along the second direction, and The plurality of top electrical connection structures and the plurality of second bottom electrical connection structures are alternately arranged along the first direction.

22. The micro LED display panel according to claim 21, characterized in that: The plurality of gaps include: a plurality of first gaps defined between adjacent top electrical connection structures and the first bottom electrical connection structures, and A plurality of second gaps are defined between adjacent top electrical connection structures and the second bottom electrical connection structures.

23. The micro LED display panel according to claim 22, characterized in that: The plurality of gaps also includes: A plurality of third gaps are defined between adjacent first bottom electrical connection structures and second bottom electrical connection structures.

24. The micro LED display panel according to claim 23, characterized in that: Each of the third gaps extends along an imaginary diagonal line connecting centers of diagonally connected adjacent micro LEDs.

25. The micro LED display panel according to claim 23, characterized in that: The diagonally adjacent third gaps are parallel to each other.

26. The micro LED display panel according to claim 23, characterized in that: Adjacent third gaps arranged diagonally are aligned with each other.

27. The micro LED display panel according to claim 23, characterized in that: An extension direction of the diagonally arranged adjacent third gaps is not along an imaginary diagonal line connecting centers of diagonally connected adjacent micro LEDs.

28. A micro LED display panel, characterized in that: include: Micro LED array, including: a plurality of micro LEDs; and A plurality of electrical connection structures are disposed around the plurality of micro LEDs and electrically connected to the plurality of micro LEDs, The plurality of electrical connection structures include a first electrical connection structure and a second electrical connection structure adjacent to each other, The first electrical connection structure comprises a first side facing the second electrical connection structure, The second electrical connection structure includes a second side facing the first electrical connection structure, and The first side and the second side are both non-linear.

29. The micro LED display panel according to claim 28, characterized in that: The first side of the first electrical connection structure is conformal to the second side of the second electrical connection structure.

30. The micro LED display panel according to claim 28, characterized in that: A gap is defined between the first side of the first electrical connection structure and the second side of the second electrical connection structure.

31. The micro LED display panel according to claim 30, characterized in that: The width of the gap ranges from 50 nm to 2000 nm.

32. The micro LED display panel according to claim 28, characterized in that: A protrusion protruding toward the second electrical connection structure is defined on a first side of the first electrical connection structure, and a recess embedded to accommodate the protrusion is defined on a second side of the second electrical connection structure.

33. The micro LED display panel according to claim 28, characterized in that: The first side of the first electrical connection structure has a convex shape, and the second side of the second electrical connection structure has a concave shape.

34. The micro LED display panel according to claim 28, characterized in that: The first electrical connection structure and the second electrical connection structure are arranged along a first direction, and The first side of the first electrical connection structure and the second side of the second electrical connection structure each include at least one portion that is not parallel to a second direction, and the second direction is perpendicular to the first direction.

35. The micro LED display panel according to claim 28, characterized in that: The first side of the first electrical connection structure and the second side of the second electrical connection structure each include at least two portions extending in different directions.

36. The micro LED display panel according to claim 28, characterized in that: The first side of the first electrical connection structure and the second side of the second electrical connection structure each include a bent portion.

37. The micro LED display panel according to claim 28, characterized in that: The plurality of electrical connection structures include a plurality of first electrical connection structures and a plurality of second electrical connection structures alternately arranged along a first direction.

38. The micro LED display panel according to claim 37, characterized in that: The maximum dimension of one of the first electrical connection structures along the first direction is equal to or greater than the shortest spacing between adjacent second electrical connection structures along the first direction.

39. A method for reducing optical crosstalk between light-emitting units in a display panel, characterized in that: The display panel comprises: a plurality of light emitting units; and a plurality of electrical connection structures, disposed around the plurality of light-emitting units and electrically connected to the plurality of light-emitting units, the electrical connection structures being spaced apart from each other to define a plurality of gaps therebetween, The method comprises: The light emitted by one of the light emitting units is reflected by at least a portion of one of the electrical connection structures disposed on a light propagation path of the light emitting unit.

40. The method according to claim 39, characterized in that The reflected light comprises: When part of the light emitted by the light emitting unit enters the gap between the adjacent electrical connection structures, the light is reflected by at least a part of at least one of the adjacent electrical connection structures.

41. The method according to claim 39, characterized in that The reflected light comprises: A portion of the light is reflected back to the light emitting unit through one of the electrical connection structures arranged on the light propagation path of the light emitting unit.

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