Patent ID: 11887514
Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 6:
7. A display device, comprising: a display panel and at least two driving chips located in a bonding area of the display panel;
wherein each of the driving chips has a detection circuit disposed therein; wherein the detection circuit comprises a plurality of sub-detection circuits; wherein each of the sub-detection circuits comprises a control switch; and wherein each of the sub-detection circuits is correspondingly coupled to one of data lines in a display area of the display panel through the control switch corresponding to each of the sub-detection circuits;
wherein a plurality of detection pads are disposed in a non-display area on a side of the display panel corresponding to the driving chips; wherein the detection pads are electrically coupled to the detection circuits; and wherein a plurality of detection signals received by the detection pads are transmitted to the data lines through the sub-detection circuits;
wherein a portion of the data lines correspondingly coupled to each of the driving chips is grouped into a data line group; and wherein a resistance of the sub-detection circuits correspondingly coupled to the portion of the data lines in the data line group gradually increases from two sides of the data line group to a middle of the data line group; or wherein the resistance of the sub-detection circuits correspondingly coupled to the portion of the data lines in the data line group gradually increases from the middle of the data line group to the two sides of the data line group;
wherein the detection circuit comprises a detection control line, at least two detection signal lines, and a plurality of control switch groups; and wherein a portion of the control switches in each of the control switch groups is in one-to-one correspondence with the detection signal lines;
wherein the control switch has an input terminal coupled to the detection signal line corresponding to the control switch, a control terminal coupled to the detection control line, and an output terminal coupled to the data line;
wherein the detection control lines of the detection circuits of each adjacent two of the driving chips are electrically coupled to each other;
wherein N of the driving chips are disposed in the bonding area, the detection pads comprise N+1 detection pad groups, and N is a positive integer greater than or equal to one;
wherein each of the detection pad groups comprises at least two first detection pads that are in one-to-one correspondence with the detection signal lines and a second detection pad corresponding to the detection control line; and
wherein two of the first detection pads in two of the detection pad groups send one of the detection signals to a middle of each of the detection signal lines.