US 12,219,697 B2
Display assembly and display device each including flexible circuit board with reinforcement plate having wave shaped edge
Xiao Bai, Beijing (CN); Shengji Yang, Beijing (CN); Kuanta Huang, Beijing (CN); and Pengcheng Lu, Beijing (CN)
Assigned to BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/598,232
Filed by BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Apr. 9, 2021, PCT No. PCT/CN2021/086177
§ 371(c)(1), (2) Date Sep. 24, 2021,
PCT Pub. No. WO2021/238443, PCT Pub. Date Dec. 2, 2021.
Claims priority of application No. 202010452026.5 (CN), filed on May 25, 2020.
Prior Publication US 2022/0322524 A1, Oct. 6, 2022
Int. Cl. H05K 1/02 (2006.01); H05K 1/18 (2006.01); H10K 59/131 (2023.01); H01L 23/00 (2006.01)
CPC H05K 1/0281 (2013.01) [H05K 1/189 (2013.01); H10K 59/131 (2023.02); H01L 24/05 (2013.01); H01L 24/32 (2013.01); H01L 2224/05571 (2013.01); H01L 2224/05573 (2013.01); H01L 2224/05624 (2013.01); H01L 2224/05647 (2013.01); H01L 2224/05666 (2013.01); H01L 2224/0568 (2013.01); H01L 2224/32227 (2013.01); H05K 2201/10128 (2013.01); H05K 2201/2009 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A display assembly, comprising:
a display panel comprising a display region and a bonding region on at least one side of the display region, wherein
the display panel comprises: a substrate, a driving circuit, and a first pad, the driving circuit and the first pad are on the substrate, and the first pad is in the bonding region; the driving circuit is electrically connected to the first pad, and at least comprises a transistor in the display region, and a semiconductor layer of the transistor is embedded in the substrate;
a flexible circuit board, comprising: a flexible base plate, a first wiring layer and a first reinforcement plate, wherein the first wiring layer is on the flexible base plate and comprises a main routing portion and a second pad, and the first reinforcement plate is on a side of the first wiring layer distal to the flexible base plate;
an orthogonal projection of the main routing portion on the flexible base plate is within an orthogonal projection of the first reinforcement plate on the flexible base plate; the second pad is connected to the main routing portion, at least a part of the second pad is electrically connected to the first pad through a conductive adhesive, and the conductive adhesive comprises conductive particles;
in a first direction, the first reinforcement plate is outside the display panel, has a first edge proximal to the display panel; the first edge comprises: convex portions bent towards the display panel, and concave portions bent away from the display panel, and the concave portions and the convex portions are alternately arranged in a second direction to form a wave shape; the first direction is a direction in which the second pad is away from the display panel, and the second direction intersects with the first direction;
the convex portions and the concave portions are both arc-shaped;
a length of each of the convex portions in the second direction is equal to a length of each of the concave portions in the second direction; and
the conductive particles in the conductive adhesive are uniformly dispersed along the convex portions and the concave portions.