Gate driver circuit and method for driving display panel
AssigneeNovatek Microelectronics Corp.
InventorsKai-Ting Yuan, Wei-Lun Shih, Chun-Hung Chen, Li-Yang Tang
Life of this patent
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Abstract
A gate driver circuit configured to drive a display panel is provided. The gate driver circuit includes an output buffer circuit and a controller circuit. The output buffer circuit includes a plurality of current transmission paths. The output buffer circuit is configured to output a driving signal to drive the display panel. The controller circuit is coupled to the output buffer circuit. The controller circuit is configured to control conduction states of the current transmission paths of the output buffer circuit.
Claims25
A gate driver circuit, configured to drive a display panel, the gate driver circuit comprising:
- an output buffer circuit, comprising a plurality of current transmission paths, and configured to output a driving signal to drive the display panel;
- a controller circuit, coupled to the output buffer circuit, and configured to control conduction states of the current transmission paths of the output buffer circuit;
- and
- a comparator circuit, configured to detect a voltage value of the driving signal, and configured to control the conduction states of the current transmission paths of the output buffer circuit according to the voltage value of the driving signal.
A method for driving a display panel, adapted to a display device, wherein the display device comprises a gate driver circuit and the display panel, and the gate driver circuit comprises an output buffer circuit, the method comprising:
- controlling conduction states of current transmission paths of the output buffer circuit, wherein a driving capability of the output buffer circuit is determined according to a number of the current transmission paths that are conducted, and at least two of the current transmission paths are conducted at a same time in a specified phase;
- outputting a driving signal from the output buffer circuit to drive the display panel;
- and
- detecting a voltage value of the driving signal,
- wherein in the step of controlling the conduction states of the current transmission paths of the output buffer circuit, the conduction states of the current transmission paths of the output buffer circuit are controlled according to the voltage value of the driving signal.
Dependencies are inferred from the claim text.