Micro light-emitting device display panel

Abstract

The invention discloses a micro light-emitting device display panel, which is characterized in that a plurality of first interconnection electrodes are arranged, the first interconnection electrodes are arranged between two adjacent pixels, and the first interconnection electrodes are connected with a common electrode layer, a second epitaxial layer and a third epitaxial layer of the adjacent pixels, so that the first interconnection electrodes and the common electrode layer can be effectively interconnected; the first interconnection electrode is connected with the common electrode layer, the second epitaxial layer and the third epitaxial layer of the adjacent pixel, so that the structure formed by connecting the first interconnection electrode and the common electrode layer has smaller impedance, and the heating value of the micro light-emitting device display panel is reduced; the first interconnection electrode is connected with the common electrode layer, the second epitaxial layer and the third epitaxial layer of the adjacent pixel; the heat generated by the first epitaxial layer, the second epitaxial layer and the third epitaxial layer of the pixel can be conducted to the outside of the micro light-emitting device display panel through the first interconnection electrode, so that the heat dissipation capability of the micro light-emitting device display panel is improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a micro-luminescent device display panel. Background Art

[0002] The micro-luminescent device display panel is a display panel that uses Si-uLED (silicon-based micro-light emitting diode) display technology. The micro-luminescent device display panel has the advantages of high brightness and high contrast. In order to achieve vertical full-color display of the micro-luminescent device display panel, the traditional micro-luminescent device display panel stacks red light emitting devices, green light emitting devices and blue light emitting devices in the vertical direction of each sub-pixel, so that each different color of light can be irradiated to the outside world from different film layers. However, the micro-luminescent device display panel of this solution has the problems of high heat generation and poor heat dissipation capacity. Summary of the invention

[0003] The embodiments of the present application provide a micro-light emitting device display panel, which can reduce the heat generated by the micro-light emitting device display panel while improving the heat dissipation capacity of the micro-light emitting device display panel.

[0004] In a first aspect, an embodiment of the present application provides a micro-light emitting device display panel, comprising:

[0005] substrate;

[0006] A plurality of pixels, wherein the plurality of pixels are arranged on the substrate at intervals, and the pixels include a common electrode layer arranged on the substrate, a first epitaxial layer arranged on a surface of the common electrode layer away from the substrate, a second epitaxial layer arranged on a side of the first epitaxial layer away from the substrate, and a third epitaxial layer arranged on a side of the second epitaxial layer away from the substrate;

[0007] A plurality of first interconnecting electrodes are provided, wherein the first interconnecting electrodes are located between two adjacent pixels, and the first interconnecting electrodes are connected to the common electrode layer, the second epitaxial layer, and the third epitaxial layer of the adjacent pixels.

[0008] Furthermore, the first interconnecting electrode extends in the direction of the column of the micro-light-emitting device display panel, and the first interconnecting electrode is located between two adjacent columns of pixels, or the first interconnecting electrode extends in the direction of the row of the micro-light-emitting device display panel, and the first interconnecting electrode is located between two adjacent rows of pixels.

[0009] Furthermore, the first interconnect electrode includes a first main body, a first metal portion and a second metal portion, the first main body is in direct contact with the common electrode layer, the first metal portion is connected to the first main body, and the first metal portion is in direct contact with the second epitaxial layer, the second metal portion is connected to the first main body, and the second metal portion is in direct contact with the third epitaxial layer.

[0010] Furthermore, the first interconnected electrode also includes a third metal part and a fourth metal part, the third metal part is arranged on the same layer as the first metal part, the fourth metal part is arranged on the same layer as the second metal part, the first metal part includes a first reflection surface, the second metal part includes a second reflection surface, the third metal part includes a third reflection surface, the fourth metal part includes a fourth reflection surface, the third reflection surface is arranged parallel to the first reflection surface and spaced apart from each other, and the fourth reflection surface is arranged parallel to the second reflection surface and spaced apart from each other.

[0011] Furthermore, in a top view of the micro-light-emitting device display panel, the first reflective surface overlaps with the light-emitting surface of the first epitaxial layer, and the second reflective surface overlaps with the light-emitting surface of the second epitaxial layer.

[0012] Furthermore, in a top view of the micro-light-emitting device display panel, the third reflective surface does not overlap with the light-emitting surface of the first epitaxial layer, and the fourth reflective surface does not overlap with the light-emitting surface of the second epitaxial layer.

[0013] Furthermore, the micro-luminescent device display panel also includes a plurality of second interconnected electrodes, which are located between two adjacent pixels, and the second interconnected electrodes and the first interconnected electrodes are alternately arranged in the first direction of the micro-luminescent device display panel, and the second interconnected electrodes are connected to the adjacent first interconnected electrodes, and the second interconnected electrodes are also connected to the common electrode layer of the pixels.

[0014] Furthermore, the first interconnected electrode includes a second main body, a fifth metal portion and a sixth metal portion, the second main body is in direct contact with the common electrode layer, the fifth metal portion is connected to the second main body, and the fifth metal portion is in direct contact with the second epitaxial layer, the sixth metal portion is connected to the second main body, and the sixth metal portion is in direct contact with the third epitaxial layer.

[0015] Furthermore, the second interconnection electrode and the first interconnection electrode are arranged in a second direction of the micro-light-emitting device display panel, and the first interconnection electrode further includes a seventh metal portion, the seventh metal portion and the sixth metal portion are arranged in the same layer, the fifth metal portion includes a fifth reflection surface, the sixth metal portion includes a sixth reflection surface, and the seventh metal portion includes a seventh reflection surface;

[0016] The second interconnect electrode includes an eighth metal portion, the eighth metal portion is disposed in the same layer as the fifth metal portion, and the eighth metal portion includes an eighth reflective surface;

[0017] The eighth reflection surface is arranged in parallel and spaced apart from the fifth reflection surface, the seventh reflection surface is arranged in parallel and spaced apart from the sixth reflection surface, and the second direction is perpendicular to the first direction.

[0018] Furthermore, each of the first interconnected electrodes includes two of the fifth metal parts and two of the sixth metal parts, and the two of the fifth metal parts are directly in contact with the second epitaxial layer of the two pixels on both sides of the first interconnected electrode, respectively, and the two of the sixth metal parts are directly in contact with the third epitaxial layer of the two pixels on both sides of the first interconnected electrode, respectively, and the two fifth metal parts are symmetrically arranged with the second main body as the symmetry axis, and the two sixth metal parts are symmetrically arranged with the second main body as the symmetry axis.

[0019] Beneficial effects of this application:

[0020] The present application provides a micro-light-emitting device display panel, which is provided with a plurality of first interconnecting electrodes, and the first interconnecting electrodes are provided between two adjacent columns or rows of pixels, and the first interconnecting electrodes are connected to the common electrode layer, the second epitaxial layer and the third epitaxial layer of the adjacent pixels, so that the first interconnecting electrodes and the common electrode layer can be effectively interconnected, so that the structure formed by the connection between the first interconnecting electrodes and the common electrode layer has a smaller impedance, thereby reducing the heat generated by the micro-light-emitting device display panel, and because the first interconnecting electrodes are connected to the common electrode layer, the second epitaxial layer and the third epitaxial layer of the adjacent pixels, the heat generated by the first epitaxial layer, the second epitaxial layer and the third epitaxial layer of the pixels can be conducted to the outside of the micro-light-emitting device display panel through the first interconnecting electrodes, thereby improving the heat dissipation capacity of the micro-light-emitting device display panel.

[0021] The present application provides a micro-light-emitting device display panel, which is provided with a plurality of first interconnecting electrodes and a plurality of second interconnecting electrodes, wherein the plurality of first interconnecting electrodes are arranged at intervals in a first direction of the micro-light-emitting device display panel, and the first interconnecting electrodes are located between two adjacent pixels, the first interconnecting electrodes are connected to the common electrode layer, the second epitaxial layer and the third epitaxial layer of the adjacent pixels, the second interconnecting electrodes are located between two adjacent pixels, the second interconnecting electrodes and the first interconnecting electrodes are alternately arranged in the first direction of the micro-light-emitting device display panel, and the second interconnecting electrodes are connected to the adjacent first interconnecting electrodes, and the second interconnecting electrodes are also connected to the common electrode layer of the pixels, so that the first interconnecting electrodes can be connected to the common electrode layer of the pixels. The electrode, the second interconnected electrode and the common electrode layer are effectively interconnected, so that the structure formed by the first interconnected electrode, the second interconnected electrode and the common electrode layer has a smaller impedance, thereby reducing the heat generated by the micro-light-emitting device display panel; at the same time, because the first interconnected electrode is connected to the common electrode layer, the second epitaxial layer and the third epitaxial layer of the adjacent pixel, the second interconnected electrode is connected to the adjacent first interconnected electrode, and the second interconnected electrode is also connected to the common electrode layer of the adjacent pixel, the heat generated by the first epitaxial layer, the second epitaxial layer and the third epitaxial layer of the pixel can be conducted to the outside of the micro-light-emitting device display panel through the first interconnected electrode and the second interconnected electrode, thereby improving the heat dissipation capacity of the micro-light-emitting device display panel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of a conventional micro-luminescent device display panel;

[0023] Figure 2 yes Figure 1 A cross-sectional view of a micro-light emitting device display panel is shown;

[0024] Figure 3 is a schematic diagram of the first micro-light emitting device display panel of the present application;

[0025] Figure 4 yes Figure 3 A cross-sectional view of the micro-light emitting device display panel taken at AA′;

[0026] Figure 5 yes Figure 3 The optical path principle diagram of the micro-light emitting device display panel shown;

[0027] Figure 6 is a schematic diagram of a second micro-light emitting device display panel of the present application;

[0028] Figure 7 yes Figure 6 A cross-sectional view of the micro-light emitting device display panel BB′ is shown;

[0029] Figure 8 yes Figure 6 The optical path principle diagram of the micro-light emitting device display panel shown;

[0030] Fig. 9 yes Figure 6 A cross-sectional view of the micro-light emitting device display panel at CC′ shown;

[0031] Fig.10 It is a top view of the connection between the second trunk portion of the first interconnect electrode and the sixth metal portion of the second micro-light-emitting device display panel of the present application.

[0032] 100-substrate; 200-pixel, 210-common electrode layer, 220-first epitaxial layer, 230-second epitaxial layer, 240-third epitaxial layer, 250-first transparent conductive layer, 260-second transparent conductive layer, 270-third transparent conductive layer; 300-first interconnecting electrode, 310-first main body, 320-first metal part, 321-first reflection surface, 330-second metal part, 331-second reflection surface, 340-third metal part, 341-third reflection surface, 350-fourth metal part, 351-fourth reflection surface, 360-second main body, 370-fifth metal part, 371-fifth reflection surface, 380-sixth metal part, 381-sixth reflection surface, 390-seventh metal part, 391-seventh reflection surface; 400-second interconnecting electrode, 410-eighth metal part, 411-eighth reflection surface.

[0033] 10-red light emitting device; 20-green light emitting device; 30-blue light emitting device; 40-metal bonding layer. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. The technical solutions described below are only used to explain and illustrate the ideas of the present application and should not be regarded as limiting the scope of protection of the present application.

[0035] In addition, the terms "first", "second" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different technical features. The term "plurality" and similar words mean two or more, unless otherwise clearly defined.

[0036] The micro-light emitting device display panel is a display panel that uses Si-uLED (silicon-based micro-light emitting diode) display technology. The micro-light emitting device display panel has the advantages of high brightness and high contrast. In order to achieve vertical full-color display of the micro-light emitting device display panel, reference Figure 1 , Figure 2The micro-luminescent device display panel of the conventional scheme stacks a red light emitting device 10, a green light emitting device 20 and a blue light emitting device 30 in the vertical direction of each sub-pixel, so that each light of different colors can be irradiated to the outside from different film layers, but the micro-luminescent device display panel of this scheme has the problems of high heat generation and poor heat dissipation capacity; and because the green light emitting device 20 of the micro-luminescent device display panel of this scheme is connected to the red light emitting device 10 through an opaque bonding layer 40, and the blue light emitting device 30 is connected to the green light emitting device 20 through an opaque bonding layer 40, the metal bonding layer 40 blocks the light of the green light emitting device 20 and the red light emitting device 10, resulting in a reduction in the light extraction efficiency of the micro-luminescent device display panel.

[0037] The first embodiment of the present application provides a first micro-light emitting device display panel, referring to Figure 3 , Figure 4 The micro-luminescent device display panel includes a substrate 100, a plurality of pixels 200 and a plurality of first interconnecting electrodes 300; the plurality of pixels 200 are arranged at intervals on the substrate 100, and the pixels 200 include a common electrode layer 210 arranged on the substrate 100, a first epitaxial layer 220 arranged on a surface of the common electrode layer 210 away from the substrate 100, a second epitaxial layer 230 arranged on a side of the first epitaxial layer 220 away from the substrate 100, and a third epitaxial layer 240 arranged on a side of the second epitaxial layer 230 away from the substrate 100; the first interconnecting electrode 300 is located between two adjacent columns or rows of pixels 200, and the first interconnecting electrode 300 is connected to the common electrode layer 210, the second epitaxial layer 230 and the third epitaxial layer 240 of the adjacent pixels 200.

[0038] By setting a plurality of first interconnecting electrodes 300, and the first interconnecting electrodes 300 are set between two adjacent columns or rows of pixels 200, the first interconnecting electrodes 300 are connected to the common electrode layer 210, the second epitaxial layer 230 and the third epitaxial layer 240 of the adjacent pixels 200, so that the first interconnecting electrodes 300 and the common electrode layer 210 can be effectively interconnected, so that the structure formed by the connection between the first interconnecting electrodes 300 and the common electrode layer 210 has a smaller impedance, thereby reducing the heat generated by the micro-light-emitting device display panel, and because the first interconnecting electrodes 300 are connected to the common electrode layer 210, the second epitaxial layer 230 and the third epitaxial layer 240 of the adjacent pixels 200, the heat generated by the first epitaxial layer 220, the second epitaxial layer 230 and the third epitaxial layer 240 of the pixel 200 can be conducted to the outside of the micro-light-emitting device display panel through the first interconnecting electrodes 300, thereby improving the heat dissipation capacity of the micro-light-emitting device display panel.

[0039] In this embodiment, in a top view of the micro light emitting device display panel, the area of ​​the third epitaxial layer 240 is smaller than that of the second epitaxial layer 230 , and the area of ​​the second epitaxial layer 230 is smaller than that of the first epitaxial layer 220 .

[0040] In this embodiment, the color of the light emitted by the first epitaxial layer 220 is red light, the color of the light emitted by the second epitaxial layer 230 is green light, and the color of the light emitted by the third epitaxial layer 240 is blue light.

[0041] In this embodiment, the material of the first interconnect electrode 300 is a light-proof material. Specifically, the material of the first interconnect electrode 300 is Au or Sn.

[0042] In this embodiment, the first interconnected electrode 300 includes a first main body 310, a first metal part 320 and a second metal part 330, the first main body 310 is in direct contact with the common electrode layer 210, the first metal part 320 is connected to the first main body 310, and the first metal part 320 is in direct contact with the second epitaxial layer 230, the second metal part 330 is connected to the first main body 310, and the second metal part 330 is in direct contact with the third epitaxial layer 240. By setting the first main body 310 to be in direct contact with the common electrode layer 210, the first metal part 320 to be connected to the first main body 310, and the first metal part 320 to be in direct contact with the second epitaxial layer 230, the second metal part 330 to be connected to the first main body 310, and the second metal part 330 to be in direct contact with the third epitaxial layer 240, on the one hand, the heat generated by the second epitaxial layer 230 can be conducted to the outside of the micro-light-emitting device display panel through the first metal part 320 and the first main body 310, and the heat generated by the third epitaxial layer 240 can be conducted to the outside of the micro-light-emitting device display panel through the second metal part 330 and the first main body 310, thereby improving the heat dissipation capacity of the micro-light-emitting device display panel. On the other hand, the first metal part 320 and the second metal part 330 can be used as electrodes to electrically connect the cathodes of the second epitaxial layer 230 and the third epitaxial layer 240 to the common electrode layer.

[0043] In this embodiment, reference Figure 3 , Figure 4 , Figure 5The first interconnected electrode 300 also includes a third metal part 340 and a fourth metal part 350. The third metal part 340 is arranged on the same layer as the first metal part 320, and the fourth metal part 350 is arranged on the same layer as the second metal part 330. The first metal part 320 includes a first reflection surface 321, and the second metal part 330 includes a second reflection surface 331. The third metal part 340 includes a third reflection surface 341, and the fourth metal part 350 includes a fourth reflection surface 351. The third reflection surface 341 is arranged parallel to the first reflection surface 321 and spaced apart from each other, and the fourth reflection surface 351 is arranged parallel to the second reflection surface 331 and spaced apart from each other. By setting the first interconnect electrode 300 to also include a third metal part 340 and a fourth metal part 350, the third metal part 340 is arranged at the same layer as the first metal part 320, the fourth metal part 350 is arranged at the same layer as the second metal part 330, the first metal part 320 includes a first reflection surface 321, the second metal part 330 includes a second reflection surface 331, the third metal part 340 includes a third reflection surface 341, the fourth metal part 350 includes a fourth reflection surface 351, the third reflection surface 341 is arranged parallel to the first reflection surface 321, and the fourth reflection surface 351 is arranged parallel to the second reflection surface 331; so that the first epitaxial layer 220 generates The light can be reflected onto the third reflection surface 341 under the action of the first reflection surface 321, and emitted toward the light emitting surface of the micro-light-emitting device display panel under the action of the third reflection surface 341. The light emitted by the second epitaxial layer 230 can be reflected onto the fourth reflection surface under the action of the second reflection surface 331, and emitted toward the light emitting surface of the micro-light-emitting device display panel under the action of the fourth reflection surface. The light of the first epitaxial layer 220 and the light of the second epitaxial layer 230 are prevented from being blocked by the opaque bonding layer between the first epitaxial layer 220 and the second epitaxial layer 230, and the light of the second epitaxial layer 230 is prevented from being blocked by the opaque bonding layer between the third epitaxial layer 240 and the second epitaxial layer 230, thereby improving the light extraction efficiency of the micro-light-emitting device display panel.

[0044] In this embodiment, the first metal part 320 is located between the film layer where the first epitaxial layer 220 is located and the film layer where the second epitaxial layer 230 is located, the second metal part 330 is located between the film layer where the second epitaxial layer 230 is located and the film layer where the third epitaxial layer 240 is located, the third metal part 340 is located between the film layer where the first epitaxial layer 220 is located and the film layer where the second epitaxial layer 230 is located, and the fourth metal part 350 is located between the film layer where the second epitaxial layer 230 is located and the film layer where the third epitaxial layer 240 is located.

[0045] In this embodiment, reference Figure 4 , Figure 5The micro-luminescent device display panel also includes a first transparent conductive layer 250, a second transparent conductive layer 260 and a third transparent conductive layer 270. The first transparent conductive layer 250 is located on a surface of the first epitaxial layer 220 away from the substrate 100, the second transparent conductive layer 260 is located on a surface of the second epitaxial layer 230 away from the substrate 100, and the third transparent conductive layer 270 is located on a surface of the second epitaxial layer 230 away from the substrate 100.

[0046] In this embodiment, the material of the first interconnect electrode 300 is a light-proof material. Specifically, the material of the first interconnect electrode 300 is Au or Sn.

[0047] In this embodiment, reference Figure 4 , Figure 5 In the top view of the micro-light-emitting device display panel, the first reflection surface 321 overlaps with the light-emitting surface of the first epitaxial layer 220, and the second reflection surface overlaps with the light-emitting surface of the second epitaxial layer 230. By arranging the first reflection surface 321 to overlap with the light-emitting surface of the first epitaxial layer 220, and the second reflection surface 331 to overlap with the light-emitting surface of the second epitaxial layer 230, it is ensured that the first reflection surface 321 can fully reflect the light of the first epitaxial layer 220, and the second reflection surface 331 can fully reflect the light of the second epitaxial layer 230, so as to avoid the first metal part 320 blocking the light of the first epitaxial layer 220, and the second metal part 330 blocking the light of the second epitaxial layer 230, thereby reducing the light loss of the micro-light-emitting device display panel.

[0048] In this embodiment, reference Figure 4 , Figure 5 In the top view of the micro-light-emitting device display panel, the third reflection surface does not overlap with the light-emitting surface of the first epitaxial layer 220, and the fourth reflection surface 341 does not overlap with the light-emitting surface of the second epitaxial layer 230. By setting the third reflection surface 341 and the second reflection surface 331 to not overlap with the light-emitting surface of the first epitaxial layer 220, and the fourth reflection surface 341 to not overlap with the light-emitting surface of the second epitaxial layer 230, it is possible to avoid the third metal part 340 from blocking the light of the first epitaxial layer 220, and the fourth metal part 350 from blocking the light of the second epitaxial layer 230, thereby reducing the light loss of the micro-light-emitting device display panel.

[0049] In this embodiment, the plane where the top surface of the first interconnect electrode 300 is located is not lower than the plane where the top surface of the third epitaxial layer 240 is located.

[0050] The second embodiment of the present application provides a second micro-light emitting device display panel, referring to Figure 6 , Figure 7 , Fig. 9The micro-light emitting device display panel includes a substrate 100, a plurality of pixels 200, a plurality of first interconnected electrodes 300, and a plurality of second interconnected electrodes 400; the plurality of pixels 200 are arranged on the substrate 100 at intervals, and the pixels 200 include a common electrode layer 210 arranged on the substrate 100, a first epitaxial layer 220 arranged on a surface of the common electrode layer 210 away from the substrate 100, a second epitaxial layer 230 arranged on a side of the first epitaxial layer 220 away from the substrate 100, and a third epitaxial layer 240 arranged on a side of the second epitaxial layer 230 away from the substrate 100; the plurality of first interconnected electrodes 300 are arranged in a first direction of the micro-light emitting device display panel L is arranged at intervals, and the first interconnected electrode 300 is located between two adjacent pixels 200, and the first interconnected electrode 300 is connected to the common electrode layer 210, the second epitaxial layer 230 and the third epitaxial layer 240 of the adjacent pixels 200; the second interconnected electrode 400 is located between two adjacent pixels 200, and the second interconnected electrode 400 and the first interconnected electrode 300 are alternately arranged in the first direction L of the micro-light-emitting device display panel, and the second interconnected electrode 400 is connected to the adjacent first interconnected electrode 300, and the second interconnected electrode 400 is also connected to the common electrode layer 210 of the pixel 200.

[0051] By setting a plurality of first interconnected electrodes 300 and a plurality of second interconnected electrodes 400, the plurality of first interconnected electrodes 300 are arranged at intervals in the first direction L of the micro-light-emitting device display panel, and the first interconnected electrode 300 is located between two adjacent pixels 200, the first interconnected electrode 300 is connected to the common electrode layer 210, the second epitaxial layer 230 and the third epitaxial layer 240 of the adjacent pixels 200, the second interconnected electrode 400 is located between two adjacent pixels 200, the second interconnected electrodes 400 and the first interconnected electrodes 300 are alternately arranged in the first direction L of the micro-light-emitting device display panel, and the second interconnected electrodes 400 are connected to the adjacent first interconnected electrodes 300, and the second interconnected electrodes 400 are also connected to the common electrode layer 210 of the pixels 200, so that the first interconnected electrodes 300 and the second interconnected electrodes 300 can be connected. 400 is effectively interconnected with the common electrode layer 210, so that the structure formed by the first interconnected electrode 300, the second interconnected electrode 400 and the common electrode layer 210 has a smaller impedance, thereby reducing the heat generated by the micro-light-emitting device display panel; at the same time, since the first interconnected electrode 300 is connected to the common electrode layer 210, the second epitaxial layer 230 and the third epitaxial layer 240 of the adjacent pixel 200, the second interconnected electrode 400 is connected to the adjacent first interconnected electrode 300, and the second interconnected electrode 400 is also connected to the common electrode layer 210 of the adjacent pixel 200, the heat generated by the first epitaxial layer 220, the second epitaxial layer 230 and the third epitaxial layer 240 of the pixel 200 can be conducted to the outside of the micro-light-emitting device display panel through the first interconnected electrode 300 and the second interconnected electrode 400, thereby improving the heat dissipation capacity of the micro-light-emitting device display panel.

[0052] In this embodiment, reference Figure 7 , Figure 8 , Fig.10The first interconnected electrode 300 includes a second main stem 360, a fifth metal portion 370 and a sixth metal portion 380, the second main stem 360 is in direct contact with the common electrode layer 210, the fifth metal portion 370 is connected to the second main stem 360, and the fifth metal portion 370 is in direct contact with the second epitaxial layer 230, the sixth metal portion 380 is connected to the second main stem 360, and the sixth metal portion 380 is in direct contact with the third epitaxial layer 240. By setting the second main stem 360 to be in direct contact with the common electrode layer 210, the fifth metal portion 370 is connected to the second main stem 360, and the fifth metal portion 370 is in direct contact with the second epitaxial layer 230, the sixth metal portion 380 is connected to the second main stem 360, and the sixth metal portion 380 is in direct contact with the third epitaxial layer 240, on the one hand, the heat generated by the second epitaxial layer 230 can be conducted to the outside of the micro-light-emitting device display panel through the fifth metal portion 370 and the second main stem 360, and the heat generated by the third epitaxial layer 240 can be conducted to the outside of the micro-light-emitting device display panel through the sixth metal portion 380 and the second main stem 360, thereby improving the heat dissipation capacity of the micro-light-emitting device display panel, and on the other hand, the fifth metal portion 370 and the sixth metal portion 380 can also be used as electrodes to electrically connect the cathodes of the second epitaxial layer 230 and the third epitaxial layer 240 to the common layer.

[0053] In this embodiment, in a top view of the micro light emitting device display panel, the area of ​​the third epitaxial layer 240 is smaller than that of the second epitaxial layer 230 , and the area of ​​the second epitaxial layer 230 is smaller than that of the first epitaxial layer 220 .

[0054] In this embodiment, the color of the light emitted by the first epitaxial layer 220 is red light, the color of the light emitted by the second epitaxial layer 230 is green light, and the color of the light emitted by the third epitaxial layer 240 is blue light.

[0055] In this embodiment, the first direction L is the direction of the columns of the micro-light emitting device display panel.

[0056] In this embodiment, the material of the first interconnect electrode 300 is a light-proof material. Specifically, the material of the first interconnect electrode 300 is Au or Sn.

[0057] In this embodiment, the material of the second interconnect electrode 400 is a light-proof material. Specifically, the material of the second interconnect electrode 400 is Au or Sn.

[0058] In this embodiment, reference Figure 7 , Figure 8The second interconnected electrode 400 is spaced apart from the first interconnected electrode 300 in the second direction M of the micro-light-emitting device display panel, the first interconnected electrode 300 further includes a seventh metal portion 390, the seventh metal portion is arranged in the same layer as the sixth metal portion, the fifth metal portion 370 includes a fifth reflective surface 371, the sixth metal portion 380 includes a sixth reflective surface 381, and the seventh metal portion 390 includes a seventh reflective surface 391; the second interconnected electrode 400 includes an eighth metal portion 410, the eighth metal portion 410 is arranged in the same layer as the fifth metal portion 370, and the eighth metal portion 410 includes an eighth reflective surface 411; wherein the eighth reflective surface 411 is spaced apart from the fifth reflective surface 371 in parallel, the seventh reflective surface 391 is spaced apart from the sixth reflective surface 381 in parallel, and the second direction M is perpendicular to the first direction L. By setting the first interconnected electrode 300 to include a seventh metal part 390, the fifth metal part 370 to include a fifth reflection surface 371, the sixth metal part 380 to include a sixth reflection surface 381, and the seventh metal part 390 to include a seventh reflection surface 391; the second interconnected electrode 400 includes an eighth metal part 410, and the eighth metal part 410 includes an eighth reflection surface 411; wherein the eighth reflection surface 411 is arranged parallel to and spaced from the fifth reflection surface 371, and the seventh reflection surface 391 is arranged parallel to and spaced from the sixth reflection surface 381, and the second direction M is perpendicular to the first direction L; so that the light generated by the first epitaxial layer 220 can be reflected on the fifth reflection surface 371. 1 is reflected onto the eighth reflection surface 411 under the action of the eighth reflection surface 411, and is emitted toward the light exit surface of the micro-light-emitting device display panel under the action of the eighth reflection surface 411, the light emitted by the second epitaxial layer 230 can be reflected onto the seventh reflection surface 391 under the action of the sixth reflection surface 381, and is emitted toward the light exit surface of the micro-light-emitting device display panel under the action of the seventh reflection surface 391, which can avoid the opaque bonding layer between the first epitaxial layer 220 and the second epitaxial layer 230 from blocking the light of the first epitaxial layer 220, and the opaque bonding layer between the third epitaxial layer 240 and the second epitaxial layer 230 from blocking the light of the second epitaxial layer 230, thereby improving the light extraction efficiency of the micro-light-emitting device display panel.

[0059] In this embodiment, the fifth metal part 370 is located between the film layer where the first epitaxial layer 220 is located and the film layer where the second epitaxial layer 230 is located, the sixth metal part 380 is located between the film layer where the second epitaxial layer 230 is located and the film layer where the third epitaxial layer 240 is located, the seventh metal part 390 is located between the film layer where the second epitaxial layer 230 is located and the film layer where the third epitaxial layer 240 is located, and the eighth metal part 410 is located between the film layer where the first epitaxial layer 220 is located and the film layer where the second epitaxial layer 230 is located.

[0060] In this embodiment, reference Figure 7 , Figure 8 Each of the first interconnected electrodes 300 includes two fifth metal parts 370 and two sixth metal parts 380. The two fifth metal parts 370 are in direct contact with the second epitaxial layer 230 of the two pixels 200 on both sides of the first interconnected electrode 300, respectively. The two sixth metal parts 380 are in direct contact with the third epitaxial layer 240 of the two pixels 200 on both sides of the first interconnected electrode 300, respectively. The two fifth metal parts 370 are symmetrically arranged with the second main body 360 as the symmetry axis, and the two sixth metal parts 380 are symmetrically arranged with the second main body 360 as the symmetry axis.

[0061] In this embodiment, the second direction M is the direction of the rows of the micro-light emitting device display panel.

[0062] In this embodiment, reference Figure 7 , Figure 8 The micro-luminescent device display panel also includes a first transparent conductive layer 250, a second transparent conductive layer 260 and a third transparent conductive layer 270. The first transparent conductive layer 250 is located on a surface of the first epitaxial layer 220 away from the substrate 100, the second transparent conductive layer 260 is located on a surface of the second epitaxial layer 230 away from the substrate 100, and the third transparent conductive layer 270 is located on a surface of the second epitaxial layer 230 away from the substrate 100.

[0063] In this embodiment, the material of the second interconnect electrode 400 is a light-proof material. Specifically, the material of the second interconnect electrode 400 is Au or Sn.

[0064] In this embodiment, reference Figure 7 , Figure 8 In the top view of the micro-light-emitting device display panel, the fifth reflection surface 371 overlaps with the light-emitting surface of the first epitaxial layer 220, and the sixth reflection surface 381 and the eighth reflection surface 411 overlap with the light-emitting surface of the second epitaxial layer 230. By arranging the fifth reflection surface 371 to overlap with the light-emitting surface of the first epitaxial layer 220, and the sixth reflection surface 381 and the eighth reflection surface 411 to overlap with the light-emitting surface of the second epitaxial layer 230, it is ensured that the fifth reflection surface 371 can fully reflect the light of the first epitaxial layer 220, and the eighth reflection surface 411 can fully reflect the light of the second epitaxial layer 230, so as to avoid the fifth metal part from blocking the light of the first epitaxial layer 220, and the sixth metal part 380 from blocking the light of the second epitaxial layer 230, thereby reducing the light loss of the micro-light-emitting device display panel.

[0065] In this embodiment, reference Figure 7 , Figure 8In the top view of the micro-light-emitting device display panel, the eighth reflection surface does not overlap with the light-emitting surface of the first epitaxial layer 220, and the seventh reflection surface 391 and the sixth reflection surface 381 do not overlap with the light-emitting surface of the second epitaxial layer 230. By setting the eighth reflection surface 411 and the seventh reflection surface 391 not to overlap with the light-emitting surface of the first epitaxial layer 220, and the seventh reflection surface 391 and the sixth reflection surface 381 not to overlap with the light-emitting surface of the second epitaxial layer 230, it is possible to avoid the eighth metal part 410 from blocking the light of the first epitaxial layer 220 and the seventh metal part 390 from blocking the light of the second epitaxial layer 230, thereby reducing the light loss of the micro-light-emitting device display panel.

[0066] In this embodiment, the plane where the top surface of the first interconnect electrode 300 is located is not lower than the plane where the top surface of the third epitaxial layer 240 is located.

[0067] The above is a detailed description of the specific implementation of the present application. The above implementation disclosed in the present application is only the preferred implementation of the present application. For ordinary technicians in this field, many modifications and improvements can be made without departing from the concept of the present application. These modifications and improvements all fall within the scope of protection defined by the claims of the present application.

Claims

1. A micro-light emitting device display panel, characterized in that: include: substrate; A plurality of pixels, wherein the plurality of pixels are arranged on the substrate at intervals, and the pixels include a common electrode layer arranged on the substrate, a first epitaxial layer arranged on a surface of the common electrode layer away from the substrate, a second epitaxial layer arranged on a side of the first epitaxial layer away from the substrate, and a third epitaxial layer arranged on a side of the second epitaxial layer away from the substrate; A plurality of first interconnecting electrodes are provided, wherein the first interconnecting electrodes are located between two adjacent pixels, and the first interconnecting electrodes are connected to the common electrode layer, the second epitaxial layer, and the third epitaxial layer of the adjacent pixels.

2. The micro-light emitting device display panel according to claim 1, characterized in that: The first interconnecting electrode extends in the direction of the column of the micro-light-emitting device display panel, and the first interconnecting electrode is located between two adjacent columns of pixels, or the first interconnecting electrode extends in the direction of the row of the micro-light-emitting device display panel, and the first interconnecting electrode is located between two adjacent rows of pixels.

3. The micro-light emitting device display panel according to claim 2, characterized in that: The first interconnect electrode includes a first main body, a first metal portion and a second metal portion, the first main body is in direct contact with the common electrode layer, the first metal portion is connected to the first main body, and the first metal portion is in direct contact with the second epitaxial layer, the second metal portion is connected to the first main body, and the second metal portion is in direct contact with the third epitaxial layer.

4. The micro-light emitting device display panel according to claim 3, characterized in that: The first interconnect electrode also includes a third metal part and a fourth metal part, the third metal part is arranged on the same layer as the first metal part, the fourth metal part is arranged on the same layer as the second metal part, the first metal part includes a first reflection surface, the second metal part includes a second reflection surface, the third metal part includes a third reflection surface, the fourth metal part includes a fourth reflection surface, the third reflection surface is arranged parallel to the first reflection surface and spaced apart from each other, and the fourth reflection surface is arranged parallel to the second reflection surface and spaced apart from each other.

5. The micro-light emitting device display panel according to claim 4, characterized in that: In a top view of the micro-light emitting device display panel, the first reflective surface overlaps with a light emitting surface of the first epitaxial layer, and the second reflective surface overlaps with a light emitting surface of the second epitaxial layer.

6. The micro-light emitting device display panel according to claim 5, characterized in that: In a top view of the micro-light emitting device display panel, the third reflective surface does not overlap with the light emitting surface of the first epitaxial layer, and the fourth reflective surface does not overlap with the light emitting surface of the second epitaxial layer.

7. The micro-light emitting device display panel according to claim 1, characterized in that: The micro-light-emitting device display panel also includes a plurality of second interconnecting electrodes, which are located between two adjacent pixels. The second interconnecting electrodes and the first interconnecting electrodes are alternately arranged in a first direction of the micro-light-emitting device display panel, and the second interconnecting electrodes are connected to the adjacent first interconnecting electrodes. The second interconnecting electrodes are also connected to the common electrode layer of the pixels.

8. The micro-light emitting device display panel according to claim 7, characterized in that: The first interconnect electrode includes a second main body, a fifth metal portion and a sixth metal portion, the second main body is in direct contact with the common electrode layer, the fifth metal portion is connected to the second main body, and the fifth metal portion is in direct contact with the second epitaxial layer, the sixth metal portion is connected to the second main body, and the sixth metal portion is in direct contact with the third epitaxial layer.

9. The micro-light emitting device display panel according to claim 8, characterized in that: The second interconnection electrode and the first interconnection electrode are arranged in a second direction of the micro-light-emitting device display panel with an interval, the first interconnection electrode further includes a seventh metal portion, the seventh metal portion and the sixth metal portion are arranged in the same layer, the fifth metal portion includes a fifth reflection surface, the sixth metal portion includes a sixth reflection surface, and the seventh metal portion includes a seventh reflection surface; The second interconnect electrode includes an eighth metal portion, the eighth metal portion is disposed in the same layer as the fifth metal portion, and the eighth metal portion includes an eighth reflective surface; The eighth reflection surface is arranged in parallel and spaced apart from the fifth reflection surface, the seventh reflection surface is arranged in parallel and spaced apart from the sixth reflection surface, and the second direction is perpendicular to the first direction.

10. The micro-light emitting device display panel according to claim 9, characterized in that: Each of the first interconnected electrodes includes two of the fifth metal parts and two of the sixth metal parts, the two fifth metal parts are directly in contact with the second epitaxial layer of the two pixels on both sides of the first interconnected electrode, respectively, the two sixth metal parts are directly in contact with the third epitaxial layer of the two pixels on both sides of the first interconnected electrode, and the two fifth metal parts are symmetrically arranged with the second main body as the symmetry axis, and the two sixth metal parts are symmetrically arranged with the second main body as the symmetry axis.

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