US 12,224,215 B2
Display device and bonding detection method of display device
Chienpang Huang, Beijing (CN); Kaifang Zhu, Beijing (CN); Chuntong Jiang, Beijing (CN); and Wei Li, Beijing (CN)
Assigned to Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Filed by Chengdu BOE Optoelectronics Technology Co., Ltd., Sichuan (CN); and BOE Technology Group Co., Ltd., Beijing (CN)
Filed on Aug. 16, 2021, as Appl. No. 17/403,428.
Claims priority of application No. 202010955204.6 (CN), filed on Sep. 11, 2020.
Prior Publication US 2022/0084894 A1, Mar. 17, 2022
Int. Cl. H01L 21/66 (2006.01); G01R 31/28 (2006.01)
CPC H01L 22/32 (2013.01) [G01R 31/2812 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A display device, comprising:
a display panel;
a flexible circuit board;
a chip on film with a control chip, wherein the display panel is connected with the flexible circuit board through the chip on film in a bonding manner;
a first detection line located on the display panel;
a second detection line extending to the flexible circuit board from one end of the first detection line through the chip on film; and
a third detection line extending to the flexible circuit board from the other end of the first detection line through the chip on film;
wherein a path where the second detection line is located is provided with at least two first test pins, and a path where the third detection line is located is provided with at least two second test pins;
the second detection line and the third detection line are both closed loops;
wherein each of the closed loops comprises:
two first traces extending in a first direction on the chip on film,
a semi-closed first line frame located on the display panel, and
a semi-closed second line frame located on the flexible circuit board,
wherein the first direction is a direction pointing from the display panel to the flexible circuit board, and the first detection line is connected to the first line frame; and
two ends of the first line frame are correspondingly butted with two ends of the two first traces respectively, and two ends of the second line frame are correspondingly butted with the other two ends of the two first traces respectively.