US 11,774,797 B2
Backlight source, backlight module and display apparatus
Guangyun Tong, Beijing (CN); Shixin Geng, Beijing (CN); Lijin Zhao, Beijing (CN); Tengfei Wang, Beijing (CN); Jiangfeng Zhang, Beijing (CN); Xu Chen, Beijing (CN); Zhuolong Li, Beijing (CN); and Yu Zhang, Beijing (CN)
Assigned to BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 17/620,321
Filed by BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Feb. 4, 2021, PCT No. PCT/CN2021/075324
§ 371(c)(1), (2) Date Dec. 17, 2021,
PCT Pub. No. WO2021/164570, PCT Pub. Date Aug. 26, 2021.
Claims priority of application No. 202010099683.6 (CN), filed on Feb. 18, 2020.
Prior Publication US 2022/0244597 A1, Aug. 4, 2022
Int. Cl. G02F 1/13357 (2006.01); G02F 1/1335 (2006.01)
CPC G02F 1/133603 (2013.01) [G02F 1/133612 (2021.01)] 20 Claims
OG exemplary drawing
 
1. A backlight source, comprising:
a plurality of light bars, each light bar including:
at least one light-emitting group, each light-emitting group including at least two light-emitting devices connected in series; and
at least one external connection unit, each external connection unit being electrically connected to at least one light-emitting group in the light bar; the external connection unit including at least one first electrode pair in one-to-one correspondence with the at least one light-emitting group electrically connected to the external connection unit;
at least one adapter plate, each adapter plate including a plurality of adapter circuits, and each adapter circuit including:
at least two adapter units in electrical connection; each adapter unit including at least one second electrode pair in one-to-one correspondence with the at least one first electrode pair; and
a plurality of connection structures, each connection structure corresponding to one external connection unit and one adapter unit in an adapter circuit, an end of the connection structure being electrically connected to the corresponding external connection unit, and another end thereof being electrically connected to the corresponding adapter unit, so that the at least one light-emitting group electrically connected to each first electrode pair of the external connection unit is electrically connected to a corresponding second electrode pair of the adapter unit, wherein
second electrode pairs of at least two adapter units of a same adapter circuit are classified into at least one group, each group includes at least two second electrode pairs that are electrically connected in series in sequence, each of the at least two second electrode pairs is from a respective adapter unit; in light-emitting groups electrically connected to the at least two adapter units of the same adapter circuit, light-emitting groups electrically connected to at least two second electrode pairs in a same group are connected in series to form a dimming region.