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CN-118266082-B - Display module, preparation method thereof and display device

CN118266082BCN 118266082 BCN118266082 BCN 118266082BCN-118266082-B

Abstract

The application discloses a display module, a preparation method thereof and a display device, and relates to the technical field of display. The display module assembly includes a first wire, a second wire and a third wire. By enabling the first target portion of the first wiring and the second target portion of the second wiring to be arranged in an offset mode, the two boundary slope surfaces of the second target portion and the two boundary slope surfaces of the first target portion can be prevented from being overlapped, and the fact that the included angle between the boundary slope surfaces of the second target portion and the bearing surface of the substrate is too large is avoided. Further, the third target portion of the third track can climb on the boundary slope extending along the first direction between the first target portion and the second target portion, so that the climbing positions of the third target portion are increased, and the step difference of the third target portion at each climbing position is smaller. Therefore, the third wiring is prevented from being connected in a virtual mode or broken, the stability and the reliability of the third wiring are guaranteed, the yield of the display module is improved, and the display effect of the display module is good.

Inventors

  • Fu Baoze

Assignees

  • 京东方科技集团股份有限公司
  • 南京京东方显示技术有限公司

Dates

Publication Date
20260505
Application Date
20221028

Claims (19)

  1. 1. A display module, characterized in that the display module comprises: A substrate base plate (101), the substrate base plate (101) having a display area (101 a) and a fan-out area (101 b) located at one side of the display area (101 a); A first trace layer (102) located on one side of the substrate base plate (101) and located in the fan-out region (101 b), the first trace layer (102) including a first trace (1021), a first target portion (a 1) of the first trace (1021) extending along a first direction (X); A first insulating layer (103) located at a side of the first wiring layer (102) away from the substrate base plate (101); A second wiring layer (104) located on a side of the first insulating layer (103) away from the substrate board (101) and located in the fan-out region (101 b), the second wiring layer (104) including a second wiring (1041) corresponding to the first wiring (1021), a second target portion (a 2) of the second wiring (1041) extending along the first direction (X); a second insulating layer (105) located at a side of the second wiring layer (104) away from the substrate (101); And a third wiring layer (106) located at a side of the second insulating layer (105) away from the substrate board (101) and located at the fan-out region (101 b), the third wiring layer (106) including a third wiring (1061) corresponding to the second wiring (1041), a third target portion (a 3) of the third wiring (1061) extending along the first direction (X); Wherein the orthographic projection of the first target portion (a 1) on the substrate (101) and the orthographic projection of the second target portion (a 2) on the substrate (101) have a first overlapping region (b 1) formed by partially overlapping, and the first overlapping region (b 1) extends along the first direction (X); One of the first trace (1021) and the second trace (1041) is a first target trace, the other trace is a second target trace, the orthographic projection of the target portion of the first target trace on the substrate (101) and the orthographic projection of the third target portion (a 3) on the substrate (101) have a second overlapping area (b 2) formed by partially overlapping, the second overlapping area (b 2) extends along the first direction (X), and the orthographic projection of the target portion of one of the second target trace and the third trace (1061) on the substrate (101) is smaller than or equal to the orthographic projection area of the target portion of the other trace on the substrate (101).
  2. 2. The display module of claim 1, wherein the first target trace is the first trace (1021) and the second target trace is the second trace (1041).
  3. 3. The display module of claim 2, wherein the first trace (1021) comprises a first boundary slope (d 1) and a second boundary slope (d 2) extending along the first direction (X), and the second trace (1041) comprises a third boundary slope (d 3) and a fourth boundary slope (d 4) extending along the first direction (X); Orthographic projection of the third boundary slope (d 3) on the substrate (101), orthographic projection of the first boundary slope (d 1) on the substrate (101), orthographic projection of the fourth boundary slope (d 4) on the substrate (101) and orthographic projection of the second boundary slope (d 2) on the substrate (101) are sequentially arranged along a second direction (Y), and the second direction (Y) is intersected with the first direction (X); Wherein the first boundary slope (d 1) and the second boundary slope (d 2) are intersected with the bearing surface of the substrate (101), and the extension surfaces of the third boundary slope (d 3) and the fourth boundary slope (d 4) are intersected with the bearing surface of the substrate (101).
  4. 4. A display module according to claim 3, wherein the angle between the extension surface of the third boundary slope (d 3) and the bearing surface of the substrate (101) and the angle between the extension surface of the fourth boundary slope (d 4) and the bearing surface of the substrate (101) are both in the range of 40 degrees to 50 degrees.
  5. 5. A display module according to claim 3, characterized in that the second target portion (a 2) comprises a first climbing portion (e 1) between the third boundary slope (d 3) and the fourth boundary slope (d 4), the orthographic projection of the first climbing portion (e 1) on the substrate base plate (101) at least partially overlapping with the orthographic projection of the first boundary slope (d 1) on the substrate base plate (101).
  6. 6. The display module according to claim 5, wherein the third target portion (a 3) comprises a second climbing portion (e 2), a third climbing portion (e 3) and a fourth climbing portion (e 4); Wherein the orthographic projection of the second climbing part (e 2) on the substrate (101) at least partially overlaps with the orthographic projection of the third boundary slope (d 3) on the substrate (101), the orthographic projection of the third climbing part (e 3) on the substrate (101) at least partially overlaps with the orthographic projection of the first boundary slope (d 1) on the substrate (101), and the orthographic projection of the fourth climbing part (e 4) on the substrate (101) at least partially overlaps with the orthographic projection of the fourth boundary slope (d 4) on the substrate (101).
  7. 7. A display module according to claim 2, characterized in that the front projection of the first target portion (a 1) on the substrate base plate (101) has a first central axis extending in the first direction (X), the front projection of the second target portion (a 2) on the substrate base plate (101) has a second central axis extending in the first direction (X), and the front projection of the third target portion (a 3) on the substrate base plate (101) has a third central axis extending in the first direction (X); The first central axis and the second central axis are parallel and are arranged at intervals, and the second central axis and the third central axis are overlapped.
  8. 8. The display module according to claim 7, characterized in that the ratio of the minimum distance of the first central axis and the second central axis to the length of the orthographic projection of the first target portion (a 1) on the substrate base plate (101) along the second direction (Y) ranges from 1/8 to 3/4.
  9. 9. The display module assembly of claim 7, wherein a minimum spacing of the first central axis and the second central axis ranges from 0.5 microns to 1.5 microns.
  10. 10. The display module assembly of claim 9, wherein a minimum spacing between the first central axis and the second central axis is 1 micron.
  11. 11. A display module according to claim 9, characterized in that the length of the orthographic projection of the first target portion (a 1) on the substrate (101) in the second direction (Y), the length of the orthographic projection of the second target portion (a 2) on the substrate (101) in the second direction (Y) and the length of the orthographic projection of the third target portion (a 3) on the substrate (101) in the second direction (Y) are each in the range of 2 to 4 micrometers.
  12. 12. The display module according to any one of claims 1 to 11, wherein the first trace layer (102) includes a plurality of the first traces (1021), the second trace layer (104) includes a plurality of the second traces (1041) corresponding to the plurality of the first traces (1021) one to one, and the third trace layer (106) includes a plurality of the third traces (1061) corresponding to the plurality of the second traces (1041) one to one.
  13. 13. The display module according to claim 12, wherein first target portions (a 1) of the plurality of first traces (1021) are arranged at equal intervals along a second direction (Y), second target portions (a 2) of the plurality of second traces (1041) are arranged at equal intervals along the second direction (Y), and third target portions (a 3) of the plurality of third traces (1061) are arranged at equal intervals along the second direction (Y).
  14. 14. The display module according to claim 12, wherein the plurality of first wires (1021) includes at least a first wire (1021) and a second first wire (1021), the plurality of second wires (1041) includes at least a first second wire (1041) and a second wire (1041), the first second wire (1041) corresponds to the first wire (1021), and the second wire (1041) corresponds to the second first wire (1021); The distance between the first central axis of the first wire (1021) and the second central axis of the first second wire (1041) is equal to the distance between the first central axis of the second first wire (1021) and the second central axis of the second wire (1041).
  15. 15. The display module according to any one of claims 1 to 11, wherein the display module comprises a touch panel and a display panel, the touch panel comprises at least a plurality of emitter electrode traces, and the display panel comprises at least a plurality of gate lines and a plurality of data lines; the first wiring (1021) is the emitter electrode wiring, the second wiring (1041) is the gate line, and the third wiring (1061) is the data line.
  16. 16. The preparation method of the display module is characterized by comprising the following steps: Providing a substrate (101), wherein the substrate (101) is provided with a display area (101 a) and a fan-out area (101 b) positioned at one side of the display area (101 a); Forming a first wiring film on one side of the substrate (101), and patterning the first wiring film by using a first mask to form a first wiring layer (102), wherein the first wiring layer (102) is positioned in the fan-out area (101 b), the first wiring layer (102) comprises a first wiring (1021), and a first target part (a 1) of the first wiring (1021) extends along a first direction (X); Forming a first insulating layer (103) on one side of the first wiring layer (102) away from the substrate base plate (101); forming a second wiring film on one side of the first insulating layer (103) far away from the substrate (101), and performing patterning treatment on the second wiring film by using a second mask to form a second wiring layer (104), wherein the second wiring layer (104) is positioned in the fan-out area (101 b), the second wiring layer (104) comprises a second wiring (1041) corresponding to the first wiring (1021), and a second target part (a 2) of the second wiring (1041) extends along the first direction (X); forming a second insulating layer (105) on one side of the second wiring layer (104) away from the substrate base plate (101); Forming a third wiring (1061) film on one side of the second insulating layer (105) away from the substrate (101), and performing patterning treatment on the third wiring (1061) film by using a third mask to form a third wiring layer (106), wherein the third wiring layer (106) comprises a third wiring (1061) corresponding to the second wiring (1041), and a third target portion (a 3) of the third wiring (1061) extends along the first direction (X); Wherein the orthographic projection of the first target portion (a 1) on the substrate (101) and the orthographic projection of the second target portion (a 2) on the substrate (101) have a first overlapping region (b 1) formed by partially overlapping, and the first overlapping region (b 1) extends along the first direction (X); One of the first trace (1021) and the second trace (1041) is a first target trace, the other trace is a second target trace, the orthographic projection of the target portion of the first target trace on the substrate (101) and the orthographic projection of the third target portion (a 3) on the substrate (101) have a second overlapping area (b 2) formed by partially overlapping, the second overlapping area (b 2) extends along the first direction (X), and the orthographic projection of the target portion of one of the second target trace and the third trace (1061) on the substrate (101) is smaller than or equal to the orthographic projection area of the target portion of the other trace on the substrate (101).
  17. 17. The method of claim 16, wherein the first mask has a first opening for forming the first trace (1021), the second mask has a second opening for forming the second trace (1041), the third mask has a third opening for one third trace (1061); The orthographic projection of the first opening on the substrate (101) is overlapped with the orthographic projection part of the second opening on the substrate (101), and the orthographic projection of the first opening on the substrate (101) is overlapped with the orthographic projection part of the third opening on the substrate (101); The orthographic projection of one of the second and third openings onto the substrate (101) is located within the orthographic projection of the other opening onto the substrate (101).
  18. 18. The method according to claim 16 or 17, wherein the display module comprises a touch panel and a display panel, wherein the touch panel comprises at least a plurality of emitter electrode traces, and the display panel comprises at least a plurality of gate lines and a plurality of data lines; the first wiring (1021) is the emitter electrode wiring, the second wiring (1041) is the gate line, and the third wiring (1061) is the data line.
  19. 19. A display device, characterized in that the display device comprises a power supply assembly (20) and a display module (10) according to any one of claims 1 to 15; the power supply assembly (20) is used for supplying power to the display module (10).

Description

Display module, preparation method thereof and display device Technical Field The application relates to the technical field of display, in particular to a display module, a preparation method thereof and a display device. Background With the development of the display industry, the technical and quality requirements of people on display products are gradually improved, and the extremely narrow frame of the display module has become a development trend. The continual compression of the bezel dimensions of the display modules places higher demands on the routing of the fan-out areas. In the related art, in order to save layout space of a fan-out area in a display module, different signal wires can be designed on different film layers, and the signal wires positioned on the different film layers are designed in a completely overlapped mode. However, the scheme is easy to cause disconnection of the signal wiring, the yield of the display module is low, and the display effect is poor. Disclosure of Invention The application provides a display module, a preparation method thereof and a display device, which can solve the problems of lower yield and poorer display effect of the display module in the related technology. The technical scheme is as follows: In one aspect, a display module is provided, the display module includes: a substrate having a display area and a fan-out area located at one side of the display area; The first wiring layer is positioned on one side of the substrate base plate and positioned in the fan-out area, the first wiring layer comprises a first wiring, and a first target part of the first wiring extends along a first direction; The first insulating layer is positioned at one side of the first wiring layer away from the substrate base plate; The second wiring layer is positioned on one side, far away from the substrate base plate, of the first insulating layer and is positioned in the fan-out area, the second wiring layer comprises a second wiring corresponding to the first wiring, and a second target part of the second wiring extends along the first direction; The second insulating layer is positioned at one side of the second wiring layer away from the substrate base plate; The third wiring layer is positioned on one side, far away from the substrate base plate, of the second insulating layer and is positioned in the fan-out area, the third wiring layer comprises a third wiring corresponding to the second wiring, and a third target part of the third wiring extends along the first direction; Wherein, the orthographic projection of the first target part on the substrate and the orthographic projection of the second target part on the substrate have a first overlapping area formed by partial overlapping, and the first overlapping area extends along the first direction; One of the first wire and the second wire is a first target wire, the other wire is a second target wire, the orthographic projection of the target part of the first target wire on the substrate and the orthographic projection of the third target part on the substrate have a second overlapping area which is formed by partially overlapping, the second overlapping area extends along the first direction, and the target part of one wire of the second target wire and the third wire is positioned in the orthographic projection of the target part of the other wire on the substrate in the orthographic projection of the second target wire and the third wire on the substrate. Optionally, the first target trace is the first trace, and the second target trace is the second trace. Optionally, the first trace includes a first boundary slope and a second boundary slope extending along the first direction, and the second trace includes a third boundary slope and a fourth boundary slope extending along the first direction; orthographic projection of the third boundary slope surface on the substrate, orthographic projection of the first boundary slope surface on the substrate, orthographic projection of the fourth boundary slope surface on the substrate and orthographic projection of the second boundary slope surface on the substrate are sequentially arranged along a second direction, and the second direction intersects with the first direction; and for the first boundary slope surface and the second boundary slope surface which are intersected with the bearing surface of the substrate, the extension surfaces of the third boundary slope surface and the fourth boundary slope surface are intersected with the bearing surface of the substrate. Optionally, the included angle between the extending surface of the third boundary slope and the bearing surface of the substrate and the included angle between the extending surface of the fourth boundary slope and the bearing surface of the substrate are both 40 degrees to 50 degrees. Optionally, the second target portion includes a first climbing portion located between the third boundary slope and the f