Display Device and Electronic Device Using the Same
First Claim
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1. A display device comprising:
- a first transistor;
a second transistor;
a third transistor;
a fourth transistor,a fifth transistor; and
a pixel electrode,wherein one of a source and a drain of the first transistor is electrically connected a first line,wherein the other of the source and the drain of the first transistor is electrically connected to a gate of the second transistor and one of a source and a drain of the third transistor,wherein one of a source and a drain of the second transistor is electrically connected to a gate of the third transistor and the pixel electrode,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 fifth transistor,wherein the other of the source and the drain of the third transistor is electrically connected to one of a source and a drain of the fourth transistor,wherein the other of the source and the drain of the fourth transistor is electrically connected to a second line, andwherein the other of the source and the drain of the fifth transistor is electrically connected to the second line.
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Abstract
A display device with a compensation circuit that applies a fixed potential constantly to a gate electrode of a driving transistor for a certain period is provided. Specifically, each difference voltage value between an anode and a cathode of the light emitting element is utilized in the case where the light emitting element emits light and emits no light. In a case where the light emitting element emits light, a potential of the gate electrode of the driving transistor is to be held; and in a case where the light emitting element emits no light, a potential that certainly turns off the gate electrode of the driving transistor is kept on applying to the gate electrode of the driving transistor.
19 Citations
16 Claims
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1. A display device comprising:
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a first transistor; a second transistor; a third transistor; a fourth transistor, a fifth transistor; and a pixel electrode, wherein one of a source and a drain of the first transistor is electrically connected a first line, wherein the other of the source and the drain of the first transistor is electrically connected to a gate of the second transistor and one of a source and a drain of the third transistor, wherein one of a source and a drain of the second transistor is electrically connected to a gate of the third transistor and the pixel electrode, 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 fifth transistor, wherein the other of the source and the drain of the third transistor is electrically connected to one of a source and a drain of the fourth transistor, wherein the other of the source and the drain of the fourth transistor is electrically connected to a second line, and wherein the other of the source and the drain of the fifth transistor is electrically connected to the second line. - View Dependent Claims (2, 3, 4, 5)
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6. A display device comprising:
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a first transistor; a second transistor; a third transistor; a fourth transistor, a fifth transistor; and a pixel electrode, wherein one of a source and a drain of the first transistor is electrically connected a first line, wherein the other of the source and the drain of the first transistor is electrically connected to a gate of the second transistor and one of a source and a drain of the third transistor, wherein one of a source and a drain of the second transistor is electrically connected to a gate of the third transistor and the pixel electrode, 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 fifth transistor, wherein the other of the source and the drain of the third transistor is electrically connected to one of a source and a drain of the fourth transistor, wherein the other of the source and the drain of the fourth transistor is electrically connected to a second line, and wherein the other of the source and the drain of the fifth transistor is electrically connected to the second line. wherein a polarity of the first transistor is different from a polarity of the fourth transistor. - View Dependent Claims (7, 8, 9, 10)
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11. A display device comprising:
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a first transistor; a second transistor; a third transistor; a fourth transistor, a fifth transistor; and a light-emitting element, wherein one of a source and a drain of the first transistor is electrically connected a first line, wherein the other of the source and the drain of the first transistor is electrically connected to a gate of the second transistor and one of a source and a drain of the third transistor, wherein one of a source and a drain of the second transistor is electrically connected to a gate of the third transistor and a pixel electrode of the light-emitting element, 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 fifth transistor, wherein the other of the source and the drain of the third transistor is electrically connected to one of a source and a drain of the fourth transistor, wherein the other of the source and the drain of the fourth transistor is electrically connected to a second line, and wherein the other of the source and the drain of the fifth transistor is electrically connected to the second line. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification
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Current AssigneeSemiconductor Energy Laboratory Co., Ltd.
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Original AssigneeSemiconductor Energy Laboratory Co., Ltd.
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InventorsOsame, Mitsuaki, Kato, Taichi
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current257/59
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CPC Class CodesG09G 2300/0819 used for counteracting unde...G09G 2300/0847 being a dynamic memory with...G09G 2310/0251 Precharge or discharge of p...G09G 2320/0238 Improving the black levelG09G 3/3258 with pixel circuitry contro...G09G 3/3291 in which the data driver su...H01L 2924/00 Indexing scheme for arrange...H01L 2924/0002 Not covered by any one of g...H01L 33/0041 characterised by field-effe...
