Structure of pixel
AssigneeShenzhen China Star Optelectronics Technology Co., Ltd.
InventorXiangyang XU
Life of this patent
Estimating the term…
Abstract
The present invention provides a structure of a pixel, which has a simple structure and employs an arrangement where a terminal of the storage capacitor Cst is of the same potential as the gate line. In other words, under a condition of not reducing aperture ratio, an arrangement of two (or three) gate lines is used, of which one is used to early set the voltage of the pixel electrode to a reference voltage by one period of line scanning time and, also, which is set to partly overlap the pixel electrode of a structure of another pixel to provide a storage capacitor, so as to shorten the charging time of the pixel unit and increase the charging speed of the pixel unit.
Claims15
A structure of a pixel structure, comprising:
- a substrate;
- a data line, a first gate line, a second gate line, and a common electrode line, wherein the data line, the first gate line, the second gate line, and the common electrode line are arranged on the substrate and the common electrode line is located between the first gate line and the second gate line;
- and
- a pixel unit, wherein the pixel unit comprises:
- a first thin-film transistor, a second thin-film transistor, and a pixel electrode, the first thin-film transistor being electrically connected to the data line, the second gate line, and the pixel electrode, the second thin-film transistor being electrically connected to the common electrode line, the first gate line, and the pixel electrode;
- the first gate line controlling the second thin-film transistor so as to control the pixel electrode to early discharge to the common electrode line by one period of line scanning time.
A pixel structure, comprising:
- a substrate;
- a data line, a first gate line, a second gate line, and a common electrode line, wherein the data line, the first gate line, the second gate line, and the common electrode line are arranged on the substrate and the common electrode line is located between the first gate line and the second gate line;
- and
- a pixel unit, wherein the pixel unit comprises:
- a first thin-film transistor, a second thin-film transistor, and a pixel electrode, the first thin-film transistor being electrically connected to the data line, the second gate line, and the pixel electrode, the second thin-film transistor being electrically connected to the common electrode line, the first gate line, and the pixel electrode;
- the first gate line controlling the second thin-film transistor so as to control the pixel electrode to early discharge to the common electrode line by one period of line scanning time;
- wherein the pixel electrode of the pixel unit partly overlaps a first gate line of a structure of a pixel located exactly under the pixel unit to form a storage capacitor of the pixel unit;
- further comprising a third gate line that is arranged on the substrate in such a way that the third gate line is located on the same side as the first gate line, the second gate line, and the common electrode line and partly overlaps the pixel electrode to form a storage capacitor of the pixel unit, the third gate line having the same signal as that of the first gate line;
- wherein the second gate line provides a scan signal to the pixel unit so that the first thin-film transistor responds to the scan signal to have a data signal of the data line stored to the storage capacitor;
- wherein the first thin-film transistor comprises a first gate terminal, a first source terminal, and a first drain terminal, the first gate terminal being connected to the second gate line, the first source terminal being connected to the data line, the first drain terminal being connected through a via to the pixel electrode;
- and
- wherein the common electrode line provides a reference voltage to the pixel unit and the first gate line supplies a control signal to have the second thin-film transistor of the pixel unit early switched on by one period of line scanning time so as to early set a voltage of the pixel electrode to the reference voltage by one period of line scanning time.
Dependencies are inferred from the claim text.