Method for driving display device
First Claim
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1. A method for driving a display device comprising a first pixel, a second pixel, a third pixel, a first scan line electrically connected to the first pixel, a second scan line electrically connected to the second pixel, and a third scan line electrically connected to the third pixel, the method comprising the steps of:
- supplying a first voltage to the first scan line, a second voltage to the second scan line, and the second voltage to the third scan line in a first selection period of a first frame period;
supplying the first voltage to the second scan line, the second voltage to the first scan line, and the second voltage to the third scan line in a second selection period of the first frame period;
supplying the first voltage to the third scan line, the second voltage to the first scan line, and the second voltage to the second scan line in a third selection period of the first frame period;
supplying the first voltage to the first scan line, the second voltage to the second scan line, and the second voltage to the third scan line in a first selection period of a second frame period;
supplying the first voltage to the second scan line, the second voltage to the first scan line, and the second voltage to the third scan line in a second selection period of the second frame period; and
supplying the first voltage to the third scan line, the second voltage to the first scan line, and the second voltage to the second scan line in a third selection period of the second frame period,wherein the first selection period of the first frame period is longer than the second selection period of the first frame period and the third selection period of the first frame period, andwherein the second selection period of the second frame period is longer than the first selection period of the second frame period and the third selection period of the second frame period.
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Abstract
A method for driving a display device in which characteristics of a transistor including an oxide semiconductor can approximately be recovered to characteristics before deterioration is provided. In the method for driving the display device, by which images are displayed with the use of a plurality of frame periods, the display device is driven so that a voltage of 20 V or higher can be applied to a gate of a transistor, which is a driving element, for 1 millisecond or longer in a period, in which any one of scan lines is selected, in each frame period. For a plurality of frame periods, the rows are selected so that a voltage of 20 V or higher is applied to gates of all of the transistors which are driving elements for 1 millisecond or longer, whereby characteristics of the transistor can approximately be recovered to characteristics before deterioration.
109 Citations
15 Claims
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1. A method for driving a display device comprising a first pixel, a second pixel, a third pixel, a first scan line electrically connected to the first pixel, a second scan line electrically connected to the second pixel, and a third scan line electrically connected to the third pixel, the method comprising the steps of:
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supplying a first voltage to the first scan line, a second voltage to the second scan line, and the second voltage to the third scan line in a first selection period of a first frame period; supplying the first voltage to the second scan line, the second voltage to the first scan line, and the second voltage to the third scan line in a second selection period of the first frame period; supplying the first voltage to the third scan line, the second voltage to the first scan line, and the second voltage to the second scan line in a third selection period of the first frame period; supplying the first voltage to the first scan line, the second voltage to the second scan line, and the second voltage to the third scan line in a first selection period of a second frame period; supplying the first voltage to the second scan line, the second voltage to the first scan line, and the second voltage to the third scan line in a second selection period of the second frame period; and supplying the first voltage to the third scan line, the second voltage to the first scan line, and the second voltage to the second scan line in a third selection period of the second frame period, wherein the first selection period of the first frame period is longer than the second selection period of the first frame period and the third selection period of the first frame period, and wherein the second selection period of the second frame period is longer than the first selection period of the second frame period and the third selection period of the second frame period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for driving a display device comprising a first pixel, a second pixel, a third pixel, a first scan line electrically connected to the first pixel, a second scan line electrically connected to the second pixel, a third scan line electrically connected to the third pixel, and a signal line electrically connected to the first pixel, the second pixel, and the third pixel, the method comprising the steps of:
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supplying a first voltage to the first scan line, a second voltage to the second scan line, the second voltage to the third scan line, and a first image signal to the signal line in a first selection period of a first frame period; supplying the first voltage to the second scan line, the second voltage to the first scan line, the second voltage to the third scan line, and a second image signal to the signal line in a second selection period of the first frame period; supplying the first voltage to the third scan line, the second voltage to the first scan line, the second voltage to the second scan line, and a third image signal to the signal line in a third selection period of the first frame period; supplying the first voltage to the first scan line, the second voltage to the second scan line, the second voltage to the third scan line, and a fourth image signal to the signal line in a first selection period of a second frame period; supplying the first voltage to the second scan line, the second voltage to the first scan line, the second voltage to the third scan line, and a fifth image signal to the signal line in a second selection period of the second frame period; and supplying the first voltage to the third scan line, the second voltage to the first scan line, the second voltage to the second scan line, and a sixth image signal to the signal line in a third selection period of the second frame period, wherein the first image signal, the second image signal, the third image signal, and the fifth image signal have a first polarity, wherein the fourth image signal and the sixth image signal have a second polarity, wherein the first selection period of the first frame period is longer than the second selection period of the first frame period and the third selection period of the first frame period, and wherein the second selection period of the second frame period is longer than the first selection period of the second frame period and the third selection period of the second frame period. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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Current AssigneeSemiconductor Energy Laboratory Co., Ltd.
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Original AssigneeSemiconductor Energy Laboratory Co., Ltd.
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InventorsKoyama, Jun
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Primary Examiner(s)Nguyen, Chanh
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Assistant Examiner(s)RABINDRANATH, ROY P
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Application NumberUS13/286,289Publication NumberTime in Patent Office959 DaysField of Search345/100, 345/87, 345 98- 99US Class Current345/100CPC Class CodesG09G 3/2022 using sub-framesG09G 3/2081 with combination of amplitu...G09G 3/3225 using an active matrixG09G 3/36 using liquid crystals
