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US 8,803,927 B2Granted
Pixel circuit and flat display panel using the same
AssigneeAu Optronics Corporation
InventorsYu-Ching Wu, Tien-Lun Ting, Kun-Cheng Tien, Chien-Huang Liao, Wen-Hao Hsu
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Abstract
An exemplary pixel circuit and a flat display panel using the same are provided. The pixel circuit includes three sub-electrode control circuits. The sub-electrode control circuits are controlled by two scan lines to receive data transmitted from two data lines. One of the three sub-electrode control circuits adjusts stored data by charge sharing. Accordingly, a display control of the pixel circuit is achieved by the three sub-electrode control circuits.
Claims11
A pixel circuit electrically coupled to successively arranged a first data line and a second data line and further electrically coupled to successively arranged a first scan line and a second scan line, the pixel circuit comprising:
- a first sub-electrode control circuit electrically coupled to the first data line and the first scan line, the first sub-electrode control circuit for receiving data transmitted from the first data line and thereby controlling transparency of a first pixel area according to the received data from the first data line, the first sub-electrode control circuit comprising:
- a first switching element;
- a first sub-electrode electrically coupled to the first switching element;
- and
- a first storage capacitor electrically coupled to the first switching element through the first sub-electrode;
- wherein the first switching element is electrically coupled between the first data line and the first storage capacitor and further electrically coupled to the first scan line, to thereby receive the data transmitted from the first data line and store the received data from the first data line in the first storage capacitor;
- a second sub-electrode control circuit electrically coupled to the second data line and the first scan line, the second sub-electrode control circuit for receiving data transmitted from the second data line and thereby controlling transparency of a second pixel area according to the received data from the second data line, the second sub-electrode control circuit comprising:
- a second switching element;
- a second sub-electrode electrically coupled to the second switching element;
- and
- a second storage capacitor electrically coupled to the second switching element through the second sub-electrode;
- wherein the second switching element is electrically coupled between the second data line and the second storage capacitor and further electrically coupled to the first scan line, to thereby receive the data transmitted from the second data line and store the received data from the second data line in the second storage capacitor;
- and
- a third sub-electrode control circuit electrically coupled to the second data line, the first scan line and the second scan line, the third sub-electrode control circuit for receiving the data transmitted from the second data line, changing the received data from the second data line by charge sharing subjected to the control of the second scan line and thereby controlling transparency of a third pixel area according to the changed data, the third sub-electrode control circuit comprising:
- a third switching element;
- a fourth switching element;
- a third sub-electrode electrically coupled to the third switching element and the fourth switching element;
- a third storage capacitor electrically coupled to the third switching element through the third sub-electrode;
- and
- a charge sharing capacitor electrically coupled to the fourth switching element;
- wherein the third switching element is electrically coupled between the second data line and the third storage capacitor and further electrically coupled to the first scan line, to thereby receive the data transmitted from the second data line and store the received data from the second data line in the third storage capacitor;
- wherein the fourth switching element is electrically coupled between the third storage capacitor and the charge sharing capacitor and further electrically coupled to the second scan line, to thereby control the third storage capacitor and the charge sharing capacitor to mutually share charges;
- wherein a time of the second scan line being enabled is posterior to a time of the first scan line being enabled.
20 more elements
A flat display panel comprising:
- a plurality of scan lines;
- a plurality of data lines;
- and
- a plurality of pixel circuits, at least one of the pixel circuits each electrically coupled to a first data line and a second data line arranged adjacent to the first data line among the plurality of data lines and further electrically coupled to a first scan line and a second scan line arranged adjacent to the first scan line among the plurality of scan lines;
- the at least one pixel circuit each comprising:
- a first sub-electrode control circuit electrically coupled to the first data line and the first scan line and for receiving data transmitted from the first data line and controlling transparency of a first pixel area according to the received data from the first data line, the first sub-electrode control circuit comprising:
- a first switching element;
- a first sub-electrode electrically coupled to the first switching element;
- and
- a first storage capacitor electrically coupled to the first switching element through the first sub-electrode;
- wherein the first switching element is electrically coupled between the first data line and the first storage capacitor and further electrically coupled to the first scan line, to thereby receive the data transmitted from the first data line and store the received data from the first data line in the first storage capacitor;
- a second sub-electrode control circuit electrically coupled to the second data line and the first scan line and for receiving data transmitted from the second data line and controlling transparency of a second pixel area according to the received data from the second data line, the second sub-electrode control circuit comprising:
- a second switching element;
- a second sub-electrode electrically coupled to the second switching element;
- and
- a second storage capacitor electrically coupled to the second switching element through the second sub-electrode;
- wherein the second switching element is electrically coupled between the second data line and the second storage capacitor and further electrically coupled to the first scan line, to thereby receive the data transmitted from the second data line and store the received data from the second data line in the second storage capacitor;
- and
- a third sub-electrode control circuit electrically coupled to the second data line, the first scan line and the second scan line and for receiving the data transmitted from the second data line, changing the received data from the second data line by charge sharing subjected to the control of the second scan line and thereby controlling transparency of a third pixel area according to the changed data, the third sub-electrode control circuit comprising:
- a third switching element;
- a fourth switching element;
- a third sub-electrode electrically coupled to the third switching element and the fourth switching element;
- a third storage capacitor electrically coupled to the third switching element through the third sub-electrode;
- and
- a charge sharing capacitor electrically coupled to the fourth switching element;
- wherein the third switching element is electrically coupled between the second data line and the third storage capacitor and further electrically coupled to the first scan line, to thereby receive the data transmitted from the second data line and store the received data from the second data line in the third storage capacitor;
- and
- wherein the fourth switching element is electrically coupled between the third storage capacitor and the charge sharing capacitor and further electrically coupled to the second scan line, to thereby control the third storage capacitor and the charge sharing capacitor to share charges with each other;
- wherein the second scan line and the first scan line are sequentially enabled, and the second scan line is enabled after the first scan line is enabled.
26 more elements
A flat display panel being operative in two-dimensional display mode and three-dimensional display mode and comprising:
- a plurality of scan lines;
- a plurality of data lines;
- and
- a plurality of pixel circuits, at least one of the pixel circuits each electrically coupled to neighboring two of the data lines and neighboring two of the scan lines to thereby receive data transmitted from the neighboring two data lines and share charges subjected to the control of the neighboring two scan lines for image display;
- wherein the at least one pixel circuit each is divided into a plurality of pixel areas, and one of the pixel area is prevented from displaying data in the three-dimensional display mode rather than the two-dimensional display mode, the at least one pixel circuit each comprising:
- a first sub-electrode control circuit electrically coupled to a first data line and a first scan line and for receiving data transmitted from the first data line and controlling transparency of a first pixel area according to the received data from the first data line, the first sub-electrode control circuit comprising:
- a first switching element;
- a first sub-electrode electrically coupled to the first switching element;
- and
- a first storage capacitor electrically coupled to the first switching element through the first sub-electrode;
- wherein the first switching element is electrically coupled between the first data line and the first storage capacitor and further electrically coupled to the first scan line, to thereby receive the data transmitted from the first data line and store the received data from the first data line in the first storage capacitor;
- a second sub-electrode control circuit electrically coupled to a second data line and the first scan line and for receiving data transmitted from the second data line and controlling transparency of a second pixel area according to the received data from the second data line, the second sub-electrode control circuit comprising:
- a second switching element;
- a second sub-electrode electrically coupled to the second switching element;
- and
- a second storage capacitor electrically coupled to the second switching element through the second sub-electrode;
- wherein the second switching element is electrically coupled between the second data line and the second storage capacitor and further electrically coupled to the first scan line, to thereby receive the data transmitted from the second data line and store the received data from the second data line in the second storage capacitor;
- and
- a third sub-electrode control circuit electrically coupled to the second data line, the first scan line and a second scan line and for receiving the data transmitted from the second data line, changing the received data from the second data line by charge sharing subjected to the control of the second scan line and thereby controlling transparency of a third pixel area according to the changed data, the third sub-electrode control circuit comprising:
- a third switching element;
- a fourth switching element;
- a third sub-electrode electrically coupled to the third switching element and the fourth switching element;
- a third storage capacitor electrically coupled to the third switching element through the third sub-electrode;
- and
- a charge sharing capacitor electrically coupled to the fourth switching element;
- wherein the third switching element is electrically coupled between the second data line and the third storage capacitor and further electrically coupled to the first scan line, to thereby receive the data transmitted from the second data line and store the received data from the second data line in the third storage capacitor;
- wherein the fourth switching element is electrically coupled between the third storage capacitor and the charge sharing capacitor and further electrically coupled to the second scan line, to thereby control the third storage capacitor and the charge sharing capacitor to share charges with each other;
- and
- wherein the second scan line and the first scan line are sequentially enabled, and the second scan line is enabled after the first scan line is enabled.
26 more elements
Dependencies are inferred from the claim text.