Patent ID: 11967296
Assignee: HKC CORPORATION LIMITED
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 6:
7. A liquid crystal display device, comprising:
a switch element, comprising an active layer; and
a gate driver, in electrical connection with a gate of the switch element;
wherein the gate driver is configured to output a turn-on voltage to the gate of the switch element, to control the switch element to be switched on, to enable a channel formed in the active layer to be conductive;
wherein the gate driver is configured to output a turn-off voltage to the gate of the switch element, to control the switch element to be switched off, to enable the channel formed in the active layer when the switch element is switched on to be non-conductive; and
wherein the turn-off voltage is approximate to a common voltage and is lower than or equal to a cut-off voltage of the channel,
wherein the active layer is an N-type doped semiconductor material layer or a P-type undoped semiconductor material layer,
wherein when the active layer is an N-type doped semiconductor material layer, the active layer has a high trap density, the turn-on voltage>the common voltage>the turn-off voltage, and the absolute value of the voltage difference between the turn-off voltage and the common voltage is reduced through a boosting up of the turn-off voltage; and when the active layer is a P-type undoped semiconductor material layer, the active layer has a low trap density, the turn-off voltage>the common voltage>the turn-on voltage, and the absolute value of the voltage difference between the turn-off voltage and the common voltage is reduced through a stepping down of the turn-off voltage.