Display device and method of driving the same
First Claim
1. A display device comprising:
- a battery;
a pixel portion including a plurality of light-emitting elements;
a source driver for driving the pixel portion;
a timer circuit;
a charging unit detection circuit; and
a driving method selection circuit,wherein the timer circuit outputs a first signal for proceeding to a second burn-in correction period when a predetermined time passes after an end of a first burn-in correction period through a first normal driving period in which an image is displayed,wherein the charging unit detection circuit outputs a second signal for proceeding to the second burn-in correction period when the battery is charged,wherein the driving method selection circuit outputs a third signal for proceeding to the second burn-in correction period from the first normal driving period when the first signal and the second signal are inputted, and proceeding to a second normal driving period from the second burn-in correction period when the first signal and the second signal are not inputted, andwherein characteristics of the plurality of light-emitting elements are obtained by making the plurality of light-emitting elements emit light one by one in the first burn-in correction period, and by making light-emitting elements of red, blue and green emit light at a same time in the second burn-in correction period.
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Accused Products
Abstract
When a light-emitting element emits light for a long time, characteristics thereof change and current flowing therethrough is reduced even in the same voltage is applied. In particular, in a case of a display device with light-emitting element, there is a problem such that burn-in is generated in a display screen. A burn-in correction period in which characteristics of a light-emitting element in each pixel are detected is provided in addition to a normal driving period in which an image is displayed. The light-emitting element can emit light which compensates the changes in the characteristics, by correcting video signals inputted to each pixel in the normal driving period according to the characteristics of the light-emitting elements obtained in the burn-in correction period.
63 Citations
37 Claims
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1. A display device comprising:
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a battery; a pixel portion including a plurality of light-emitting elements; a source driver for driving the pixel portion; a timer circuit; a charging unit detection circuit; and a driving method selection circuit, wherein the timer circuit outputs a first signal for proceeding to a second burn-in correction period when a predetermined time passes after an end of a first burn-in correction period through a first normal driving period in which an image is displayed, wherein the charging unit detection circuit outputs a second signal for proceeding to the second burn-in correction period when the battery is charged, wherein the driving method selection circuit outputs a third signal for proceeding to the second burn-in correction period from the first normal driving period when the first signal and the second signal are inputted, and proceeding to a second normal driving period from the second burn-in correction period when the first signal and the second signal are not inputted, and wherein characteristics of the plurality of light-emitting elements are obtained by making the plurality of light-emitting elements emit light one by one in the first burn-in correction period, and by making light-emitting elements of red, blue and green emit light at a same time in the second burn-in correction period. - View Dependent Claims (6, 11, 16, 21, 26, 31, 33)
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2. A display device comprising:
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a pixel portion including a plurality of light-emitting elements; a source driver for driving the pixel portion; a timer circuit; a non-operating detection circuit; and a driving method selection circuit, wherein the timer circuit outputs a first signal for proceeding to a second burn-in correction period when a predetermined time passes after an end of a first burn-in correction period through a first normal driving period in which an image is displayed, wherein the non-operating detection circuit outputs a second signal for proceeding to the second burn-in correction period when the display device is not turned on for a predetermined time, wherein the driving method selection circuit outputs a third signal for proceeding to the second burn-in correction period from the first normal driving period when the first signal and the second signal are inputted, and for proceeding to a second normal driving period from the second burn-in correction period when the first signal and the second signal are not inputted, and wherein characteristics of the plurality of light-emitting elements are obtained by making the plurality of light-emitting elements emit light one by one in the first burn-in correction period, and by making light-emitting elements of red, blue and green emit light at a same time in the second burn-in correction period. - View Dependent Claims (7, 12, 17, 22, 27, 32, 34)
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3. A display device comprising:
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a battery; a pixel portion including a plurality of light-emitting elements; a source driver for driving the pixel portion; a timer circuit; a charging unit detection circuit; a surrounding luminance detection circuit; and a driving method selection circuit, wherein the timer circuit outputs a first signal for proceeding to a second burn-in correction period when a predetermined time passes after an end of a first burn-in correction period through a first normal driving period in which an image is displayed, wherein the charging unit detection circuit outputs a second signal for proceeding to the second burn-in correction period when the battery is charged, wherein the surrounding luminance detection circuit outputs a third signal for proceeding to the second burn-in correction period when surrounding luminance around the display device is close to a predetermined luminance, wherein the driving method selection circuit outputs a fourth signal for proceeding to the second burn-in correction period from the first normal driving period when the first signal, the second signal, and the third signal are inputted, and for proceeding to a second normal driving period from the second burn-in correction period when the first signal, the second signal, and the third signal are not inputted, and wherein characteristics of the plurality of light-emitting elements are obtained by making the plurality of light-emitting elements emit light one by one in the first burn-in correction period, and by making light-emitting elements of red, blue and green emit light at a same time in the second burn-in correction period. - View Dependent Claims (8, 13, 18, 23, 28, 35)
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4. A display device comprising:
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a pixel portion including a plurality of light-emitting elements; a source driver for driving the pixel portion; a timer circuit; a non-operating detection circuit; a surrounding luminance detection circuit; and a driving method selection circuit, wherein the timer circuit outputs a first signal for proceeding to a second burn-in correction period when a predetermined time passes after an end of a first burn-in correction period through a first normal driving period in which an image is displayed, wherein the non-operating detection circuit outputs a second signal for proceeding to the second burn-in correction period when the display device is not turned on for a predetermined time, wherein the surrounding luminance detection circuit outputs a third signal for proceeding to the second burn-in correction period when surrounding luminance around the pixel portion of the display device is close to a predetermined luminance, wherein the driving method selection circuit outputs a fourth signal for proceeding to the second burn-in correction period from the first normal driving period when the first signal, the second signal, and the third signal are inputted, and for proceeding to a second normal driving period from the second burn-in correction period when the first signal, the second signal, and the third signal are not inputted, and wherein characteristics of the plurality of light-emitting elements are obtained by making the plurality of light-emitting elements emit light one by one in the first burn-in correction period, and by making light-emitting elements of red, blue and green emit light at a same time in the second burn-in correction period. - View Dependent Claims (9, 14, 19, 24, 29, 36)
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5. A display device comprising:
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a pixel portion including a plurality of light-emitting elements; a source driver for driving the pixel portion; a timer circuit; and a driving method selection circuit, wherein the timer circuit outputs a first signal for proceeding to a second burn-in correction period when a predetermined time passes after an end of a first burn-in correction period through a first normal driving period in which an image is displayed, wherein the driving method selection circuit outputs a second signal for proceeding to the second burn-in correction period from the first normal driving period when the first signal is inputted, and for proceeding to a second normal driving period from the second burn-in correction period when the first signal is not inputted, and wherein characteristics of the plurality of light-emitting elements are obtained by making the plurality of light-emitting elements emit light one by one in the first burn-in correction period, and by making light-emitting elements of red, blue and green emit light at a same time in the second burn-in correction period. - View Dependent Claims (10, 15, 20, 25, 30, 37)
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Specification