US 11,991,825 B2
Flexible circuit board, light bar, light source and display device
Yuanda Lu, Beijing (CN); Junjie Ma, Beijing (CN); Shipeng Wang, Beijing (CN); Ming Zhai, Beijing (CN); Jian Sang, Beijing (CN); Haiwei Sun, Beijing (CN); and Dongjia Hao, Beijing (CN)
Assigned to BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Filed by BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Filed on Apr. 23, 2019, as Appl. No. 16/392,112.
Claims priority of application No. 201810804042.9 (CN), filed on Jul. 20, 2018.
Prior Publication US 2020/0025997 A1, Jan. 23, 2020
Int. Cl. F21V 8/00 (2006.01); H01R 12/65 (2011.01); H05K 1/02 (2006.01); H05K 1/11 (2006.01)
CPC H05K 1/118 (2013.01) [H01R 12/65 (2013.01); H05K 1/028 (2013.01); H05K 1/111 (2013.01); H05K 2201/09372 (2013.01); H05K 2201/09409 (2013.01); H05K 2201/09418 (2013.01); H05K 2201/09781 (2013.01); H05K 2201/10378 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A flexible circuit board for being fixed to a light bar to provide a signal for the light bar, the flexible circuit board comprising:
a plurality of signal traces for transmitting light emitting signals;
a plurality of effective welding portions configured to be fixed to a corresponding effective pad on the light bar and to transmit a signal loaded by itself to the corresponding effective pad;
at least one auxiliary welding portion configured to be fixed to a corresponding auxiliary pad on the light bar to enhance firm fixing between the flexible circuit board and the light bar,
a circuit body;
a plurality of lead portions leading out of the circuit body; and
at least one fixing portion disposed in one-to-one correspondence with the at least one lead portion,
wherein the plurality of effective welding portions and the at least one auxiliary welding portion are arranged at intervals along one direction of the flexible circuit board,
wherein the at least one of the auxiliary welding portion is arranged between adjacent effective welding portions of the plurality of effective welding portions,
wherein each of the plurality of effective welding portions is electrically connected to each of the plurality of signal traces in one-to-one correspondence, and the at least one auxiliary welding portion is not electrically connected to any of the signal trace,
wherein each fixing portion is connected to an end of a corresponding lead portion, the plurality of effective welding portions and the at least one auxiliary welding portion are both disposed on each of the at least one fixing portion,
wherein the at least one lead portion has a plurality of lead portions,
wherein on each fixing portion, a distance between an auxiliary welding portion of the at least one auxiliary welding portion furthest from the end of the corresponding lead portion and the end of the corresponding lead portion is marked as L1,
a distance between an effective welding portion of the plurality of effective welding portions closest to the end of the corresponding lead portion and the end of the corresponding lead portion is marked as L2,
where L2 is greater than L1,
wherein a length of the auxiliary welding portion in a length direction of the fixing portion is greater than a width of the lead portion in the length direction of the fixing portion, and
wherein on each fixing portion, distances between each of the at least one auxiliary welding portion and the effective welding portions adjacent to the auxiliary welding portion of the plurality of effective welding portions are equal.