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US 2010/0245307 A1Published application
Liquid Crystal Display Device and Electronic Device Including the Same
AssigneeSemiconductor Energy Laboratory Co., Ltd.
InventorsHajime KIMURA, Atsushi UMEZAKI
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Abstract
A driver circuit includes a circuit 200, a transistor 101—1, and a transistor 101—2. A signal is selectively input from the circuit 200 to a gate of the transistor 101—1 and the transistor 101—2, so that the transistor 1011 and the transistor 101—2 are controlled to be on or off. The transistor 101—1 and the transistor 101—2 are turned on or off; thus, the wiring 112 and the wiring 111 become conducting or non-conducting.
Claims31
A liquid crystal display device comprising:
- a driver circuit to which a first signal is input and from which a second signal is output;
- and
- a pixel including a liquid crystal element, for which a voltage applied to the liquid crystal element is set in accordance with the second signal,
- wherein the driver circuit includes first to fourth switches, and first and second transistors each having a gate, a source, and a drain,
- wherein the first signal is input to the gate and one of the source and the drain of the first transistor,
- wherein the first signal is input to the gate and one of the source and the drain of the second transistor,
- wherein a terminal of the first switch is electrically connected to the other one of the source and the drain of the first transistor and the first switch controls whether or not a voltage state of the second signal is set by being on or off,
- wherein a terminal of the second switch is electrically connected to the other one of the source and the drain of the second transistor and the second switch controls whether or not the voltage state of the second signal is set by being on or off,
- wherein a terminal of the third switch is electrically connected to the terminal of the second switch and the third switch controls whether or not the second switch is turned off by being on or off, and
- wherein a terminal of the fourth switch is electrically connected to the terminal of the first switch and the fourth switch controls whether or not the first switch is turned off by being on or off.
7 more elements
A liquid crystal display device comprising:
- a driver circuit to which a first input signal, a second input signal, and a third input signal are input and from which an output signal is output;
- and
- a pixel including a liquid crystal element, for which a voltage applied to the liquid crystal element is set in accordance with the output signal,
- wherein the driver circuit includes first to fourth switches, and first and second transistors each having a gate, a source, and a drain,
- wherein the first input signal is input to the gate and one of the source and the drain of the first transistor,
- wherein the first input signal is input to the gate and one of the source and the drain of the second transistor,
- wherein a terminal of the first switch is electrically connected to the other one of the source and the drain of the first transistor and the first switch controls whether or not a voltage state of the output signal is set by being on or off,
- wherein a terminal of the second switch is electrically connected to the other one of the source and the drain of the second transistor and the second switch controls whether or not the voltage state of the output signal is set by being on or off,
- wherein the second input signal is input to a first terminal of the third switch,
- wherein a second terminal of the third switch is electrically connected to the terminal of the second switch, a first voltage is supplied to a third terminal of the third switch, and the third switch controls whether or not the second switch is turned off by being on or off, and
- wherein the third input signal is input to a first terminal of the fourth switch,
- wherein a second terminal of the fourth switch is electrically connected to the terminal of the first switch, a second voltage is supplied to a third terminal of the fourth switch, and the fourth switch controls whether or not the first switch is turned off by being on or off.
9 more elements
A liquid crystal display device comprising:
- a driver circuit to which a first input signal, a second input signal, and a third input signal are input and from which an output signal is output;
- and
- a pixel including a liquid crystal element, for which a voltage applied to the liquid crystal element is set in accordance with the output signal,
- wherein the driver circuit includes first to fourth switches, and first and second transistors each having a gate, a source, and a drain,
- wherein the first input signal is input to the gate and one of the source and the drain of the first transistor,
- wherein the first input signal is input to the gate and one of the source and the drain of the second transistor,
- wherein a terminal of the first switch is electrically connected to the other one of the source and the drain of the first transistor and the first switch controls whether or not a voltage state of the output signal is set by being on or off,
- wherein a terminal of the second switch is electrically connected to the other one of the source and the drain of the second transistor and the second switch controls whether or not the voltage state of the output signal is set by being on or off,
- wherein the second input signal is input to a first terminal of the third switch,
- wherein a second terminal of the third switch is electrically connected to the terminal of the second switch,
- wherein the third input signal is input to a third terminal of the third switch, and the third switch controls whether or not the second switch is turned off by being on or off, and
- wherein the third input signal is input to a first terminal of the fourth switch,
- wherein a second terminal of the fourth switch is electrically connected to the terminal of the first switch,
- wherein the second input signal is input to a third terminal of the fourth switch, and the fourth switch controls whether or not the first switch is turned off by being on or off.
11 more elements
A liquid crystal display device comprising:
- a driver circuit to which a first input signal, a second input signal, and a third input signal are input and from which an output signal is output;
- and
- a pixel including a liquid crystal element, for which a voltage applied to the liquid crystal element is set in accordance with the output signal,
- wherein the driver circuit includes first to fourth switches, and first and second transistors each having a gate, a source, and a drain,
- wherein the first input signal is input to the gate and one of the source and the drain of the first transistor,
- wherein the first input signal is input to the gate and one of the source and the drain of the second transistor,
- wherein a terminal of the first switch is electrically connected to the other one of the source and the drain of the first transistor and the first switch controls whether or not a voltage state of the output signal is set by being on or off,
- wherein a terminal of the second switch is electrically connected to the other one of the source and the drain of the second transistor and the second switch controls whether or not the voltage state of the output signal is set by being on or off,
- wherein a first terminal of the third switch is electrically connected to the other one of the source and the drain of the second transistor,
- wherein a second terminal of the third switch is electrically connected to the terminal of the second switch,
- wherein the second input signal is input to a third terminal of the third switch, and the third switch controls whether or not the second switch is turned off by being on or off, and
- wherein a first terminal of the fourth switch is electrically connected to the other one of the source and the drain of the first transistor,
- wherein a second terminal of the fourth switch is electrically connected to the terminal of the first switch,
- wherein the third input signal is input to a third terminal of the fourth switch, and the fourth switch controls whether or not the first switch is turned off by being on or off.
11 more elements
A liquid crystal display device comprising:
- a driver circuit to which a first input signal, a second input signal, and a third input signal are input and from which an output signal is output;
- and
- a pixel including a liquid crystal element, for which a voltage applied to the liquid crystal element is set in accordance with the output signal,
- wherein the driver circuit includes first to fourth switches, and first and second transistors each having a gate, a source, and a drain,
- wherein the first input signal is input to the gate and one of the source and the drain of the first transistor,
- wherein the first input signal is input to the gate and one of the source and the drain of the second transistor,
- wherein a terminal of the first switch is electrically connected to the other one of the source and the drain of the first transistor and the first switch controls whether or not a voltage state of the output signal is set by being on or off,
- wherein a terminal of the second switch is electrically connected to the other one of the source and the drain of the second transistor and the second switch controls whether or not the voltage state of the output signal is set by being on or off,
- wherein a first terminal of the third switch is electrically connected to the terminal of the second switch,
- wherein the second input signal is input to a second terminal of the third switch, and the third switch controls whether or not the second switch is turned off by being conducting or non-conducting, and
- wherein a first terminal of the fourth switch is electrically connected to the terminal of the first switch,
- wherein the third input signal is input to a second terminal of the fourth switch, and the fourth switch controls whether or not the first switch is turned off by being conducting or non-conducting.
9 more elements
Dependencies are inferred from the claim text.