Patent ID: 11915662
Assignee: HKC CORPORATION LIMITED
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  Y | IPC G

Claim 0:
1. A backlight module comprising:
at least one drive light-emitting group, comprising:
a drive unit provided with a plurality of signal transmission channels;
a plurality of light-emitting units; and
a plurality of line groups, wherein each signal transmission channel is connected to one light-emitting unit through a corresponding line group, and the signal transmission channel, the line group and the light-emitting unit are arranged in one-to-one correspondence, wherein the line group comprises a main transmission line and a compensation line arranged in parallel;

wherein compensation lines of the plurality of line groups are connected through a control switch group, when one of the plurality of signal transmission channels is abnormal, the control switch group is enabled to control a compensation line corresponding to an abnormal signal transmission channel to be conducted with a compensation line corresponding to at least one normal signal transmission channel in the plurality of signal transmission channels;
wherein the control switch group comprises a plurality of first control switches, and the first control switch is connected in series with the compensation line in one-to-one correspondence, wherein a first terminal of the first control switch is connected to the signal transmission channel, a second terminal of the first control switch is connected to the light-emitting unit, a control terminal of the first control switch is turned on or off in response to a control signal and enables the first terminal of the first control switch and the second terminal of the first control switch to be turned on or off;
wherein in adjacent two compensation lines, the second terminal of the first control switch on one of the adjacent two compensation lines is connected to the first terminal of the first control switch on another one of the adjacent two compensation lines;
wherein the control switch group further comprises a plurality of second control switches and a plurality of third control switches, and each compensation line is correspondingly connected in series with one of the second control switches and one of the third control switches;
wherein on each of the compensation lines, a first terminal of the second control switch is connected to the signal transmission channel, a second terminal of the second control switch is connected to the first terminal of the first control switch, the second terminal of the first control switch is connected to a first terminal of the third control switch, and a second terminal of the third control switch is connected to the light-emitting unit; and
wherein control terminals of the first control switch, the second control switch and the third control switch are respectively configured for controlling the first terminal and the second terminal of each of the first control switch, the second control switch and the third control switch to be turned on or off in response to the corresponding control signal.