Liquid crystal display device and method for driving the same
First Claim
1. A liquid crystal display device comprising:
- a plurality of source bus lines in parallel with each other;
a plurality of gate bus lines in parallel with each other, crossing the source bus lines;
a switching element connected to one of the plurality of source bus lines and one of the plurality of gate bus lines;
a pixel portion connected to the switching element; and
a source drive circuit for supplying a data signal to the plurality of source bus lines,wherein the source drive circuit has a data signal line connected to the respective source bus lines, and the data signal line forms a closed circuit, thereby making a delay time of the data signal supplied to the plurality of source bus lines uniform.
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Abstract
A liquid crystal display device which includes: a plurality of source bus lines in parallel with each other; a plurality of gate bus lines in parallel with each other, crossing the source bus lines; a switching element connected to one of the plurality of source bus lines and one of the gate bus lines; a pixel portion connected to the switching element; and a source drive circuit for supplying a data signal to the plurality of source bus lines, wherein the source drive circuit has a data signal line connected to the respective source bus lines, and the data signal line forms a closed circuit, thereby making a delay time of the data signal supplied to the plurality of source bus lines uniform is disclosed.
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Citations
24 Claims
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1. A liquid crystal display device comprising:
- a plurality of source bus lines in parallel with each other;
a plurality of gate bus lines in parallel with each other, crossing the source bus lines;
a switching element connected to one of the plurality of source bus lines and one of the plurality of gate bus lines;
a pixel portion connected to the switching element; and
a source drive circuit for supplying a data signal to the plurality of source bus lines,wherein the source drive circuit has a data signal line connected to the respective source bus lines, and the data signal line forms a closed circuit, thereby making a delay time of the data signal supplied to the plurality of source bus lines uniform. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- a plurality of source bus lines in parallel with each other;
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8. A projection type liquid crystal display apparatus comprising:
- a light source;
three liquid crystal display devices;
a first optical system for splitting light from the light source into three primary-color components to introduce the three primary-color components into the three liquid crystal display devices; and
a second optical system for combining the respective components transmitted through the three liquid crystal display devices,each of the three liquid crystal display devices including;
a plurality of source bus lines in parallel with each other;
a plurality of gate bus lines in parallel with each other, crossing the plurality of source bus lines;
a switching element connected to one of the plurality of source bus lines and one of the plurality of gate bus lines;
a pixel portion connected to the switching element; and
a source drive circuit for supplying a data signal to the plurality of source bus lines, the source drive circuit including a data signal line connected to the respective source bus lines and a shift register for sequentially outputting a sampling signal based on a clock signal supplied through a clock signal line and a plurality of sampling means for sampling a data signal based on the sampling signal to output the sampled data signal to each of the plurality of source bus lines,wherein the data signal line forms a closed circuit, thereby making a delay time of the data signal supplied to the plurality of source bus lines uniform, and a scanning direction of the shift register is changed between a forward direction and a reverse direction, and the scanning direction of one of the three liquid crystal display devices being opposite to the scanning direction of the other liquid crystal display devices.
- a light source;
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9. A liquid crystal display device comprising:
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a plurality of source bus lines in parallel with each other; a plurality of gate bus lines in parallel with each other, crossing the source bus lines; a switching element connected to one of the plurality of source bus lines and one of the plurality of gate bus lines; a pixel portion connected to the switching element; and a source drive circuit for supplying a data signal to the plurality of source bus lines, wherein the source drive circuit includes a shift register for sequentially outputting a sampling signal and a plurality of sampling means for sampling the data signal based on the sampling signal to output the sampled data signal to each of the plurality of source bus lines, the source drive circuit includes a data line branched into a first branch line and a second branch line, the plurality of sampling means being grouped into a first group connected to the first branch line and a second group connected to the second branch line, each of the sampling means belonging to the same group is turned on during a different period and the number of data signal branch lines is larger than the number of sampling means which are simultaneously sampling. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method for driving a liquid crystal display device comprising:
- a plurality of source bus lines in parallel with each other;
a plurality of gate bus lines in parallel with each other, crossing the source bus lines;
a switching element connected to one of the plurality of source bus lines and one of the plurality of gate bus lines;
a pixel portion connected to the switching element; and
a source drive circuit for supplying a data signal to the plurality of source bus lines,wherein the source drive circuit includes a shift register for sequentially outputting a sampling signal and a plurality of sampling means for sampling the data signal based on the sampling signal to output the sampled data signal to each of the plurality of source bus lines, an even number of sampling means simultaneously samples the data signal based on one sampling signal, thereby generating an even number of sampled data signals, the even number of sampled data signals are output to the plurality of source bus lines under a condition that polarity of at least one of the data signals of the even number of sampled data signals are made opposite to a polarity of other data signals of the even number of sampled data signals, and the source lines to which the at least one of the data signals of the even number of sampled data signals are outputted are predetermined such that the combination of the polarities of the even number of sampled data signals prevent bright point defects. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
- a plurality of source bus lines in parallel with each other;
Specification