Patent ID: 11966128
Assignee: HKC CORPORATION LIMITED
Field: Semiconductors (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 10:
11. A display device, comprising a display panel, a driving circuit board, and a display panel static electricity protection device comprising:
a detection sub-circuit connected with a driving chip of a display panel;
a discharge circuit connected with the detection sub-circuit and the driving chip;
a current driving sub-circuit connected with the detection sub-circuit and the discharge circuit; and
a discharge terminal connected with the discharge circuit and the current driving sub-circuit;
wherein the detection sub-circuit is configured to detect static electricity, the current driving sub-circuit is configured to output and detect a current in the detection sub-circuit to open or close the discharge circuit; the static electricity is discharged to the discharge terminal through the discharge circuit and the current driving sub-circuit; the driving circuit board is connected with the display panel; the static electricity protection device is disposed on the driving circuit board;
wherein the current driving sub-circuit comprises:
a first resistor;
a comparator, wherein a same-direction input terminal of the comparator is connected with a first logic high voltage; a reverse input end of the comparator is connected with a second logic high voltage; an output terminal of the comparator is connected with a control terminal of the discharge circuit; and
a current follower, wherein a first pin corresponding to a primary side of the current follower is connected with the detection sub-circuit, a second pin corresponding to the primary side of the current follower is connected with the discharge terminal; a third pin corresponding to a secondary side of the current follower is connected with both the first resistor and the reverse input terminal of the comparator; a fourth pin corresponding to the secondary side of the current follower is connected with the discharge terminal.