Liquid crystal display device
First Claim
1. An LCD device comprising:
- a liquid crystal display panel in which a gate driver for alternately driving two transistors is formed;
a data driver which drives data lines of the liquid crystal display panel;
a timing controller which generates one voltage signal for switching the two transistors, and outputs the one voltage signal; and
a level shifter which comprises a switching signal generating unit generating two of first and second switching signals to switch the two transistors by using the one voltage signal, and outputs the generated switching signals to the gate driver,wherein the switching signal generating unit comprises;
a flip-flop which receives the voltage signal, and outputs first output signal (Q) and second output signal (Q′
);
first and second delay circuits which respectively delay the first output signal and second output signal;
a first And-Gate which performs an AND logical operation for the voltage signal and a first delay signal (A) outputted from the first delay circuit; and
a second And-Gate which performs an AND logical operation for the voltage signal and a second delay signal (B) outputted from the second delay circuit.
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Abstract
An LCD device is discussed in which a level shifter generates two switching signals, and transmits the generated signals to a gate driver of a liquid crystal display panel by the use of one voltage signal transmitted from a timing controller. The LCD device according to an embodiment includes a liquid crystal display panel in which a gate driver for alternately driving two transistors is formed; a data driver which drives data lines of the liquid crystal display panel; a timing controller which generates one voltage signal for switching the two transistors, and outputs the one voltage signal; and a level shifter which generates two of first and second switching signals to switch the two transistors by using the one voltage signal, and outputs the generated switching signals to the gate driver.
11 Citations
6 Claims
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1. An LCD device comprising:
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a liquid crystal display panel in which a gate driver for alternately driving two transistors is formed; a data driver which drives data lines of the liquid crystal display panel; a timing controller which generates one voltage signal for switching the two transistors, and outputs the one voltage signal; and a level shifter which comprises a switching signal generating unit generating two of first and second switching signals to switch the two transistors by using the one voltage signal, and outputs the generated switching signals to the gate driver, wherein the switching signal generating unit comprises; a flip-flop which receives the voltage signal, and outputs first output signal (Q) and second output signal (Q′
);first and second delay circuits which respectively delay the first output signal and second output signal; a first And-Gate which performs an AND logical operation for the voltage signal and a first delay signal (A) outputted from the first delay circuit; and a second And-Gate which performs an AND logical operation for the voltage signal and a second delay signal (B) outputted from the second delay circuit. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification
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- Resources
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Current AssigneeLG Display Co., Ltd.
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Original AssigneeLG Display Co., Ltd.
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InventorsMoon, Myung Kook, Nam, Hyun Taek, Kim, Jong Woo
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Primary Examiner(s)Chang, Kent
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Assistant Examiner(s)AU, SCOTT D
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Application NumberUS13/292,892Publication NumberTime in Patent Office1,189 DaysField of Search345 84-104, 345/208US Class Current345/208CPC Class CodesG09G 2300/0408 Integration of the drivers ...G09G 2310/0224 Details of interlacingG09G 2310/0289 Details of voltage level sh...G09G 2310/08 Details of timing specific ...G09G 3/3614 Control of polarity reversa...G09G 3/3648 using an active matrix G09G...G09G 3/3677 suitable for active matrice...
