Semiconductor Device and Driving Method Thereof, and Electronic Device
First Claim
1. A driving method of a semiconductor device including a transistor and a capacitor, wherein one electrode of the capacitor is electrically connected to a gate of the transistor, comprising the steps of:
- charging the capacitor;
discharging the capacitor so that a voltage between the one electrode and the other electrode of the capacitor is a first voltage corresponding to a threshold voltage of the transistor;
supplying a video signal to the other electrode of the capacitor while holding the first voltage in the capacitor; and
discharging the capacitor so that a discharge current passes through the transistor after supplying the video signal to the other electrode of the capacitor.
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Accused Products
Abstract
A driving method of a semiconductor device for compensating variation in threshold voltage and mobility of a transistor is provided. A driving method of a semiconductor device including a transistor and a capacitor electrically connected to a gate of the transistor includes a first period where voltage corresponding to threshold voltage of the transistor is held in the capacitor, a second period where a total voltage of video signal voltage and threshold voltage is held in the capacitor holding the threshold voltage, and a third period where charge held in the capacitor in accordance with the total voltage of the video signal voltage and the threshold voltage in the second period is discharged through the transistor.
54 Citations
10 Claims
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1. A driving method of a semiconductor device including a transistor and a capacitor, wherein one electrode of the capacitor is electrically connected to a gate of the transistor, comprising the steps of:
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charging the capacitor; discharging the capacitor so that a voltage between the one electrode and the other electrode of the capacitor is a first voltage corresponding to a threshold voltage of the transistor; supplying a video signal to the other electrode of the capacitor while holding the first voltage in the capacitor; and discharging the capacitor so that a discharge current passes through the transistor after supplying the video signal to the other electrode of the capacitor.
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2. A driving method of a semiconductor device including a transistor, a first capacitor and a second capacitor, wherein one electrode of the first capacitor is electrically connected to a gate of the transistor and wherein one electrode of the second capacitor is electrically connected to the other electrode of the first capacitor, comprising the steps of:
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charging the first capacitor; discharging the first capacitor so that a voltage between the one electrode and the other electrode of the first capacitor is a first voltage corresponding to a threshold voltage of the transistor; supplying a video signal to the one electrode of the second capacitor so that a voltage between the one electrode and the other electrode of the second capacitor is a second voltage corresponding to the video signal while holding the first voltage in the first capacitor; and discharging the first capacitor so that a discharge current passes through the transistor after supplying the video signal to the one electrode of the second capacitor.
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3. A driving method of a semiconductor device including a transistor, a capacitor and a display element, wherein one electrode of the capacitor is electrically connected to a gate of the transistor, comprising the steps of:
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charging the capacitor; discharging the capacitor so that a voltage between the one electrode and the other electrode of the capacitor is a first voltage corresponding to a threshold voltage of the transistor; supplying a video signal to the other electrode of the capacitor while holding the first voltage in the capacitor; discharging the capacitor so that a first current passes through the transistor and so that a voltage between the one electrode and the other electrode of the capacitor is a second voltage after supplying the video signal to the other electrode of the capacitor; and supplying a second current to the display element through the transistor while holding the second voltage in the capacitor.
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4. A driving method of a semiconductor device including a transistor, a first capacitor, a second capacitor and a display element, wherein one electrode of the first capacitor is electrically connected to a gate of the transistor and wherein one electrode of the second capacitor is electrically connected to the other electrode of the first capacitor, comprising the steps of:
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charging the first capacitor; discharging the first capacitor so that a voltage between the one electrode and the other electrode of the first capacitor is a first voltage corresponding to a threshold voltage of the transistor; supplying a video signal to the one electrode of the second capacitor while holding the first voltage in the first capacitor; discharging the first capacitor so that a first current passes through the transistor and so that a voltage between the one electrode and the other electrode of the first capacitor is a second voltage after supplying the video signal to the one electrode of the second capacitor; and supplying a second current to the display element through the transistor while holding the second voltage in the first capacitor.
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5. A semiconductor device comprising:
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a first transistor; a second transistor; a third transistor; a fourth transistor; a fifth transistor, a first capacitor; and a second capacitor, wherein a gate of the first transistor is electrically connected to one electrode of the first capacitor, wherein one of a source and a drain of the second transistor is electrically connected to the gate of the first transistor, wherein the other of the source and the drain of the second transistor is electrically connected to one of a source and a drain of the first transistor, wherein one of a source and a drain of the third transistor is electrically connected to the other electrode of the first capacitor, wherein the other of the source and the drain of the third transistor is electrically connected to the other of the source and the drain of the first transistor; wherein the other of the source and the drain of the first transistor is electrically connected to a second wiring, wherein one electrode of the second capacitor is electrically connected to the other electrode of the first capacitor, wherein one of a source and a drain of the fourth transistor is electrically connected to the one of the second capacitor, wherein the other of the source and the drain of the fourth transistor is electrically connected to a first wiring, wherein one of a source and a drain of the fifth transistor is electrically connected to the one of the source and the drain of the first transistor, and wherein the other of the source and the drain of the fifth transistor is electrically connected to a pixel electrode. - View Dependent Claims (6, 7, 8)
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9. A semiconductor device comprising:
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a transistor; a first capacitor wherein one electrode of the first capacitor is electrically connected to a gate of the transistor; a second capacitor wherein one electrode of the second capacitor is electrically connected to the other electrode of the first capacitor; a first switch configured to connect through an electric contact between the gate of the transistor and one of a source and a drain of the transistor; a second switch configured to connect through an electric contact between the other of the source and the drain of the transistor and the other electrode of the first capacitor; a third switch configured to connect through an electric contact between a first wiring and the one electrode of the second capacitor; and a fourth switch configured to connect through an electric contact between a pixel electrode and the one of the source and the drain of the transistor. - View Dependent Claims (10)
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Specification