Liquid crystal display and driving method and driving circuit thereof
AssigneesInnocom Technology (Shenzhen) Co., Ltd., Chimel Innolux Corporation
InventorsMan-Fai Ieong, Sz-Hsiao Chen, Eddy Giing-Lii Chen
Life of this patent
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Abstract
An exemplary driving circuit (250) of an LCD (200) includes: gate lines (210) that are parallel to each other and that each extend along a first direction; data lines (202) that are parallel to each other and that each extend along a second direction substantially orthogonal to the first direction; a gate driving circuit (210) connected to the gate lines; a data driving circuit (220) connected to the data lines; and a pre-charging voltage circuit (240). The pre-charging voltage circuit is configured to provide a pre-charging voltage to each of the data lines before the gate driving circuit scans the gate lines.
Claims8
A driving circuit of a liquid crystal display (LCD), the driving circuit comprising:
- a plurality of gate lines that are parallel to each other and that each extend along a first direction;
- a plurality of data lines that are parallel to each other and that each extend along a second direction substantially orthogonal to the first direction;
- a gate driving circuit connected to the gate lines;
- a data driving circuit connected to the data lines;
- a pre-charging voltage circuit comprising a pre-charging voltage generator and a plurality of thin film transistors, the pre-charging voltage circuit configured to provide a pre-charging voltage to each of the data lines before the gate driving circuit scans the gate lines;
- and
- a clock controller connected to the gate driving circuit, the driving circuit, and the pre-charging voltage circuit respectively;
- wherein the data lines are arranged in columns, the pre-charging voltage generator comprises a first input terminal, a second input terminal, a first output terminal connected to odd-column data lines, and a second output terminal connected to even-column data lines, and each thin film transistor comprises a gate electrode connected to the clock controller.
A liquid crystal display (LCD), comprising:
- a first substrate;
- a second substrate opposite to the first substrate;
- a liquid crystal layer sandwiched between the first and second substrates;
- a gate driving circuit connected to a plurality of gate lines;
- a data driving circuit connected to a plurality of data lines;
- a pre-charging voltage circuit comprising a pre-charging voltage generator and a plurality of thin film transistors, the pre-charging voltage circuit configured to provide a pre-charging voltage to each of the data lines before the gate driving circuit scans the gate lines;
- and
- a clock controller connected to the gate driving circuit, the data driving circuit, and the pre-charging voltage circuit respectively;
- wherein the pre-charging voltage generator comprises a first input terminal, a second input terminal, a first output terminal, and a second output terminal that is floating, and each thin film transistor comprises a gate electrode connected to the clock controller, a source electrode connected to the first output terminal, and a drain electrode connected to a corresponding data line.
A driving method for a liquid crystal display (LCD), the LCD comprising a plurality of gate lines, a plurality of data lines arranged in columns, a gate driving circuit, a data driving circuit , and a pre-charging voltage circuit, the method comprising:
- the pre-charging voltage circuit providing a pre-charging voltage to the data lines before the gate driving circuit scans the gate lines, comprising during odd-numbered frames, the pre-charging voltage circuit providing a positive pre-charging voltage to points of odd-column data lines farthest from the data driving circuit, and providing a negative pre-charging voltage to points of even-column data lines farthest from the data driving circuit;
- and
- the data driving circuit driving the data lines when the gate driving circuit scans the gate lines.
Dependencies are inferred from the claim text.