Liquid crystal display apparatus and method of driving the same
View Patent ↗In a liquid crystal display apparatus, a first control signal bus line receives a first control signal. A second control signal bus line receives a second control signal that lags behind the first control signal. A de-multiplexer circuit includes a first switching element and a second switching element. The first switching element switches a current path between a first source line and a first data line in response to the first control signal, and the second switching element switches a current path between the first source line and a second data line in response to the second control signal. A pixel part includes a first pixel connected to the first control signal bus line and corresponding to a first color filter, a second pixel connected to the second control signal bus line and corresponding to a second color filter, and a third pixel corresponding to a third color filter, wherein the third pixels are alternately connected to the first control signal bus line and the second control signal bus line.
1. A method of driving a liquid crystal display (LCD) apparatus, comprising:
receiving data voltages from a plurality of source lines to provide the data voltages to a de-multiplexer circuit connected to a plurality of data lines;
delivering a first control signal from a first control signal bus line to the de-multiplexer circuit;
delivering a second control signal from a second control signal bus line to the de-multiplexer circuit, the second control signal lagging behind the first control signal;
switching, by a first switching element of the de-multiplexer circuit, a first current path between a first source line and a first data line in response to the first control signal;
switching, by a second switching element of the de-multiplexer circuit, a second current path between the first source line and a second data line in response to the second control signal;
delivering respective data signals to respective first pixels in response to the second control signal;
delivering respective data signals to respective second pixels in response to the first control signal; and
delivering respective data signals to a first group of third pixels in response to the first control signal, and delivering respective data signals to a second group of third pixels in response to the second control signal,
wherein the first pixels corresponds to a first color filter, the second pixels corresponds to a second color filter, and the first group of third pixels and the second group of third pixels correspond to a third color filter.
2. The method of claim 1 , further comprising delivering a plurality of gate voltages from a plurality of gate lines connected to the pixel part, wherein the gate voltages maintain a high voltage during one scan period.
3. The method of claim 2 , wherein the first pixels receive their data signals during a first half-interval of the one scan period, and the second pixels receive their data signal during a second half-interval of the one scan period.
4. The method of claim 3 , wherein the third color filter is a blue color filter, and the third pixel is a blue pixel.
5. The method of claim 4 , wherein the first color filter is green color filter, the first pixel is a green pixel, the second color filter is a red color filter, and the second pixel is a red pixel.
6. The method of claim 4 , wherein the first color filter is a red color filter, the first pixel is a red pixel, the second color filter is a green color filter, and the second pixel is a green pixel.
7. The method of claim 1 , wherein a ratio of the number of input terminals to output terminals of the de-multiplexer circuit is 1:2.
8. The method of claim 1 , wherein the first switching element and the second switching element each comprise a channel comprising amorphous silicon (a-Si).
9. A liquid crystal display (LCD) apparatus, comprising:
a plurality of data lines to receive data voltages from a plurality of source lines;
a first control signal bus line to receive a first control signal;
a second control signal bus line to receive a second control signal lagging behind the first control signal;
a de-multiplexer circuit comprising a first switching element and a second switching element, the first switching element to switch a first current path between a first source line and a first data line in response to the first control signal, and the second switching element to switch a second current path between the first source line and a second data line in response to the second control signal; and
a pixel part comprising:
a first pixel connected to the first control signal bus line and corresponding to a first color filter;
a second pixel connected to the second control signal bus line and corresponding to a second color filter; and
a third pixel corresponding to a third color filter, wherein the third pixels are alternately connected to the first control signal bus line and the second control signal bus line.
10. The LCD apparatus of claim 9 , wherein a ratio of the number of input terminals to output terminals of the de-multiplexer circuit is 1:2.
11. The LCD apparatus of claim 9 , wherein the first switching element and the second switching element each comprise a channel comprising amorphous silicon (a-Si).
12. The LCD apparatus of claim 9 , wherein the third color filter is a blue color filter, and the third pixel is a blue pixel.
13. The LCD apparatus of claim 9 , wherein the first color filter is a green color filter, the first pixel is a green pixel, the second color filter is a red color filter, and the second pixel is a red pixel.
14. The LCD apparatus of claim 9 , wherein the first color filter is a red color filter, the first pixel is a red pixel, the second color filter is a green color filter, and the second pixel is a green pixel.