Organic light emitting display device and driving method thereof
AssigneeLG Display Co., Ltd.
InventorsDongYoun Lee, SockJong Yoo
Life of this patent
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Abstract
An organic light emitting display device includes a display panel including a plurality of data lines, a plurality of scan lines, and a plurality of pixels respectively provided in a plurality of areas defined by intersections of the plurality of data lines and the plurality of scan lines, a display panel driver configured to apply data voltages to the plurality of data lines and apply scan signals to the plurality of scan lines, a timing controller configured to control an operation timing of the display panel driver, and a control circuit board including the timing controller a volatile memory. If a first main voltage is applied to the volatile memory when the organic light emitting display device is turned off.
Claims14
An organic light emitting display device, comprising:
- a display panel including a plurality of data lines, a plurality of scan lines, and a plurality of pixels respectively provided in a plurality of areas defined by intersections of the plurality of data lines and the plurality of scan lines;
- a display panel driver configured to apply data voltages to the plurality of data lines and apply scan signals to the plurality of scan lines;
- and
- a control circuit board including:
- a timing controller configured to control an operation timing of the display panel driver;
- a non-volatile memory;
- and
- a volatile memory,
- wherein, when the organic light emitting display device is turned off, the control circuit board supplies a first main driving voltage that is based on a first main voltage to the volatile memory, and
- when the organic light emitting display device is turned on, the control circuit board supplies a second main driving voltage that is based on a second main voltage to the non-volatile memory, the second main voltage being different from the first main voltage.
A driving method of an organic light emitting display device, the driving method comprising:
- performing a first memory read operation in response to a first main voltage being applied when the organic light emitting display device is turned off, the first memory read operation being performed when the organic light emitting display device is subsequently turned on, and including:
- reading information stored in a volatile memory;
- and
- receiving first sensing data from a display panel by driving the display panel according to the information read from the volatile memory;
- and
- supplying a first main driving voltage to the volatile memory when the organic light emitting display device is turned off, the first main driving voltage being based on the first main voltage;
- and
- supplying a second main driving voltage to a non-volatile memory of the organic light emitting display device when the organic light emitting display device is turned on, the second main driving voltage being based on a second main voltage that is different from the first main voltage.
Dependencies are inferred from the claim text.