Invention Grant
- Patent Title: Display device and driving method thereof
- Patent Title (中): 显示装置及其驱动方法
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Application No.: US12413171Application Date: 2009-03-27
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Publication No.: US08077126B2Publication Date: 2011-12-13
- Inventor: Baek-Woon Lee , Oh-Kyong Kwon
- Applicant: Baek-Woon Lee , Oh-Kyong Kwon
- Applicant Address: KR Suwon-si KR Seoul
- Assignee: Samsung Electronics Co., Ltd.,IUCF-HYU
- Current Assignee: Samsung Electronics Co., Ltd.,IUCF-HYU
- Current Assignee Address: KR Suwon-si KR Seoul
- Agency: H.C. Park & Associates, PLC
- Priority: KR10-2008-0095208 20080929
- Main IPC: G09G3/30
- IPC: G09G3/30

Abstract:
In a pixel of a display device, a first transistor of which an second terminal is connected to a first terminal of a light emitting element supplies a driving current that corresponds to a voltage between a control terminal and the second terminal to the light emitting element, and a second terminal of the light emitting element is connected to a driving voltage. At least one second transistor transmits a black voltage that corresponds to a black gray to the control terminal of the first transistor in a first period and a second period, and transmits a gray voltage that corresponds to an input image signal to the control terminal of the first transistor in a third period. A third transistor is connected between the first terminal of the light emitting element and a voltage supply line to transmit a reference voltage, and the third transistor is turned on in the first period and turned off in the second period. A capacitor is connected between the control terminal and the source of the first transistor, stores a control voltage based on a threshold voltage of the first transistor in the second period, and stores a voltage based on the control voltage and the gray voltage in the third period.
Public/Granted literature
- US20100079361A1 DISPLAY DEVICE AND DRIVING METHOD THEREOF Public/Granted day:2010-04-01
Information query
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