Liquid crystal display apparatus and driving method thereof
First Claim
1. A liquid crystal display apparatus comprising:
- pixels including red, green and blue color pixels arranged in a direction along a data line;
gate line groups, each gate line group having a set of two gate lines electrically connected to each other, and each gate line crossing the data line;
a data driver that drives the data line, wherein the data driver supplies data to the data line;
a gate driver that drives the gate line groups; and
a timing controller that controls the data driver and the gate driver, the timing controller having at least one line memory that temporarily stores data supplied to the data driver;
wherein the timing controller includes three line memories to store red data, green data and blue data supplied to the liquid crystal display;
wherein the timing controller modifies a data enable signal supplied to the timing controller to generate a modified data enable signal having period that is ⅓
of the horizontal period;
wherein the data stored in the line memory is supplied to the data driver every one period of the modified data enable signal;
wherein the gate driver sequentially supplies a first and a second gate pulse to each of the gate line groups;
wherein the first gate pulse supplied to an i+1th gate line group is overlapped with the second gate pulse supplied to an ith gate line group in a portion of the period;
wherein the first gate pulse has a pulse width that is narrower than the second gate pulse;
wherein, when the second gate pulse is supplied to the ith gate line group and the first gate pulse is supplied to the i+1th gate line group, a second thin film transistor (TFT) is turned-on by the second gate pulse supplied to the ith gate line group and a first TFT is turned-on by the first gate pulse being provided via the turned-on second TFT, to thereby supply designated data to a color pixel connected to the first TFT, and when the first gate pulse supplied to the i+1th gate line group is off and only the second gate pulse is supplied to the ith gate line group, a third TFT formed in the ith gate line group is turned-on, to thereby supply designated data to a color pixel connected to the turned-on third TFT.
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Abstract
A liquid crystal display apparatus and a method of driving the same capable of lowering a power consumption as well as a production cost. A liquid crystal display apparatus according to the present invention comprises: pixels including red, green and blue color pixels arranged in a direction along a data line; gate line groups, each gate line group having a set of two gate lines electrically connected each other, and each gate line crossing the data line; a data driver that drives the data line; a gate driver that drives the gate line groups; and a timing controller that controls the data driver and the gate driver, the timing controller having at least one line memory that temporarily stores data supplied to the data driver.
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Citations
18 Claims
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1. A liquid crystal display apparatus comprising:
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pixels including red, green and blue color pixels arranged in a direction along a data line; gate line groups, each gate line group having a set of two gate lines electrically connected to each other, and each gate line crossing the data line; a data driver that drives the data line, wherein the data driver supplies data to the data line; a gate driver that drives the gate line groups; and a timing controller that controls the data driver and the gate driver, the timing controller having at least one line memory that temporarily stores data supplied to the data driver; wherein the timing controller includes three line memories to store red data, green data and blue data supplied to the liquid crystal display; wherein the timing controller modifies a data enable signal supplied to the timing controller to generate a modified data enable signal having period that is ⅓
of the horizontal period;wherein the data stored in the line memory is supplied to the data driver every one period of the modified data enable signal; wherein the gate driver sequentially supplies a first and a second gate pulse to each of the gate line groups; wherein the first gate pulse supplied to an i+1th gate line group is overlapped with the second gate pulse supplied to an ith gate line group in a portion of the period; wherein the first gate pulse has a pulse width that is narrower than the second gate pulse; wherein, when the second gate pulse is supplied to the ith gate line group and the first gate pulse is supplied to the i+1th gate line group, a second thin film transistor (TFT) is turned-on by the second gate pulse supplied to the ith gate line group and a first TFT is turned-on by the first gate pulse being provided via the turned-on second TFT, to thereby supply designated data to a color pixel connected to the first TFT, and when the first gate pulse supplied to the i+1th gate line group is off and only the second gate pulse is supplied to the ith gate line group, a third TFT formed in the ith gate line group is turned-on, to thereby supply designated data to a color pixel connected to the turned-on third TFT. - View Dependent Claims (2, 3)
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4. A liquid crystal display apparatus comprising:
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pixels including red, green and blue color pixels arranged in a direction along a data line; gate line groups, each gate line group having a set of two gate lines electrically connected to each other, and each gate line crossing the data line; a data driver that drives the data line, wherein the data driver supplies data to the data line; a gate driver that drives the gate line groups; and a timing controller that controls the data driver and the gate driver, the timing controller having at least one line memory that temporarily stores data supplied to the data driver; wherein the timing controller includes three line memories to store red data, green data and blue data supplied to the liquid crystal display; wherein the timing controller modifies a data enable signal supplied to the timing controller to generate a modified data enable signal having period that is ⅓
of the horizontal period;wherein the data stored in the line memory is supplied to the data driver every one period of the modified data enable signal; wherein the gate driver sequentially supplies a first and a second gate pulse to each of the gate line groups; wherein the first gate pulse supplied to an i+1th gate line group is overlapped with the second gate pulse supplied to an ith gate line group in a portion of the period; wherein the first gate pulse has a pulse width that is narrower than the second gate pulse; wherein, when the second gate pulse is supplied to the ith gate line group and the first gate pulse is supplied to the i+1th gate line group, a third thin film transistor (TFT) is turned-on by the second gate pulse supplied to the ith gate line group and a second TFT is turned-on by the first gate pulse being provided via the turned-on third TFT, to thereby supply designated data to a color pixel connected to the second TFT, and when the first gate pulse supplied to the i+1th gate line group is off and only the second gate pulse is supplied to the ith gate line group, a first TFT is turned-on by the second pulse supplied to the ith gate line group, to thereby supply designated data to a color pixel connected to the turned-on first TFT. - View Dependent Claims (5, 6)
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7. A liquid crystal display apparatus comprising;
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pixels including red, green and blue color pixels arranged in a direction along a data line; gate line groups, each gate line group having a set of two gate lines electrically connected to each other, and each gate line crossing the data line; a data driver that drives the data line, wherein the data driver supplies data to the data line; a gate driver that drives the gate line groups; and a timing controller that controls the data driver and the gate driver, the timing controller having at least one line memory that temporarily stores data supplied to the data driver; wherein the timing controller includes three line memories to store red data, green data and blue data supplied to the liquid crystal display; wherein the timing controller modifies a data enable signal supplied to the timing controller to generate a modified data enable signal having period that is ⅓
of the horizontal period;wherein the data stored in the line memory is supplied to the data driver every one period of the modified data enable signal; wherein the gate driver sequentially supplies a first and a second gate pulse to each of the gate line groups; wherein the first gate pulse supplied to an i+1th gate line group is overlapped with the second gate pulse supplied to an ith gate line group in a portion of the period; wherein the first gate pulse has a pulse width that is narrower than the second gate pulse;
wherein, when the second gate pulse is supplied to the ith gate line group and the first gate pulse is supplied to the i+1th gate line group, a third thin film transistor (TFT) and a fourth TFT are turned-on by the second gate pulse supplied to the ith gate line group, to thereby supply designated data to a color pixel connected to the fourth TFT, and when the first gate pulse supplied to the i+1th gate line group is off and only the second gate pulse is supplied to the ith gate line group, a first TFT and a second TFT which are formed in the ith gate line group are turned-on by the second pulse, to thereby supply designated data to a color pixel connected to the turned-on second TFT. - View Dependent Claims (8, 9)
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10. A method of driving a liquid crystal display apparatus, the liquid crystal display apparatus including pixels with red, green and blue color pixels arranged in vertical along a data line;
- and gate line groups, each gate line group having a set of two gate lines electrically connected each other, each gate line crossing the data line, a data driver that drives the data line, wherein the data driver supplies data to the data line, the method comprising;
sequentially supplying a gate pulse having first and second gate pulses to the gate line group; and supplying designated data to each of the red, the green and the blue color pixels in accordance with the first and the second pulses sequentially supplied to the gate line group; wherein the first gate pulse supplied to an i+1th gate line group is overlapped with the second gate pulse supplied to an ith gate line group in a portion of a period; wherein the first gate pulse has a pulse width narrower than that of the second gate pulse; wherein, in the step of supplying data, when the second gate pulse is supplied to the ith gate line group and the first gate pulse is supplied to the i+1th gate line group, a second thin film transistor (TFT) is turned-on by the second gate pulse supplied to the ith gate line group and a first TFT is turned-on by the first gate pulse being provided via the turned-on second TFT, to thereby supply designated data to a color pixel connected to the second TFT, and when the first gate pulse supplied to the i+1th gate line group is off and only the second gate pulse is supplied to the ith gate line group, a third TFT formed in the ith gate line group is turned-on, to thereby supply designated data to a color pixel connected to the turned-on third TFT. - View Dependent Claims (11, 12)
- and gate line groups, each gate line group having a set of two gate lines electrically connected each other, each gate line crossing the data line, a data driver that drives the data line, wherein the data driver supplies data to the data line, the method comprising;
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13. A method of driving a liquid crystal display apparatus, the liquid crystal display apparatus including pixels with red, green and blue color pixels arranged in vertical along a data line;
- and gate line groups, each gate line group having a set of two gate lines electrically connected each other, each gate line crossing the data line, a data driver that drives the data line, wherein the data driver supplies data to the data line, the method comprising;
sequentially supplying a gate pulse having first and second gate pulses to the gate line group; andsupplying designated data to each of the red, the green and the blue color pixels in accordance with the first and the second pulses sequentially supplied to the gate line group; wherein, in the step of supplying the data, when the second gate pulse is supplied to the ith gate line group and the first gate pulse is supplied to the i+1th gate line group, a third thin film transistor (TFT) is turned-on by the second gate pulse supplied to the ith gate line group and then a second TFT is turned-on by the first gate pulse being provided via the turned-on third TFT, to thereby supply designated data to a color pixel connected to the second TFT, and when the first gate pulse supplied to the i+1th gate line group is off and only the second gate pulse is supplied to the ith gate line group, a first TFT is turned-on by the second gate pulse, to thereby supply designated data to a color pixel connected to the turned-on first TFT. - View Dependent Claims (14, 15)
- and gate line groups, each gate line group having a set of two gate lines electrically connected each other, each gate line crossing the data line, a data driver that drives the data line, wherein the data driver supplies data to the data line, the method comprising;
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16. A method of driving a liquid crystal display apparatus, the liquid crystal display apparatus including pixels with red, green and blue color pixels arranged in vertical along a data line;
- and gate line groups, each gate line group having a set of two gate lines electrically connected each other, each gate line crossing the data line, a data driver that drives the data line, wherein the data driver supplies data to the data line, the method comprising;
sequentially supplying a gate pulse having first and second gate pulses to the gate line group; andsupplying designated data to each of the red, the green and the blue color pixels in accordance with the first and the second pulses sequentiallv supplied to the gate line group; wherein, in the step of supplying the data, when the second gate pulse is supplied to the ith gate line group and the first gate pulse is supplied to the i+1th gate line group, a third TFT and a fourth TFT are turned-on by the second gate pulse supplied to the ith gate line group, to thereby supply designated data to a color pixel connected to the fourth TFT, and when the first gate pulse supplied to the i+1th gate line group is off and only the second gate pulse is supplied to the ith gate line group, a first TFT and a second TFT are turned-on, to thereby supply designated data to a color pixel connected to the turned-on second TFT. - View Dependent Claims (17, 18)
- and gate line groups, each gate line group having a set of two gate lines electrically connected each other, each gate line crossing the data line, a data driver that drives the data line, wherein the data driver supplies data to the data line, the method comprising;
Specification