Controller and display device
AssigneeLG Display Co., Ltd.
InventorsJaeik YOO, JungHyeon KIM, SangHo YU, Tae-Wook KIM
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Abstract
A controller and a display device including the controller are discussed. The display device can perform a compensation based on a stress value for each sub-pixel and update a correction table used for compensation using a sensing value acquired at a preset period. As such, it is possible to improve the accuracy of real-time compensation. In addition, since it is possible to compensate for a sub-pixel for which a sensing value is not acquired using an indirect gain according to the ratio of the stress values of the sub-pixel to a sensing value, the accuracy of compensation can be improved even if sensing for each sub-pixel sharing a sensing line may not be easy.
Claims20
A display device comprising:
- a plurality of pixels disposed on a substrate and including a first sub-pixel and a second sub-pixel;
- and
- a controller configured to:
- store a first stress value corresponding to an accumulated value of image data for the first sub-pixel and a second stress value corresponding to an accumulated value of image data for the second sub-pixel, and
- when a first sensing value of the first sub-pixel is detected during a characteristic value sensing period for the first sub-pixel and the second sub-pixel, generate a second compensation value for the second sub-pixel using an indirect gain according to a ratio between the first and second stress values and the first sensing value.
A controller comprising:
- a memory configured to store a first correction table including a first stress value corresponding to an accumulated value of image data of a first sub-pixel and a first characteristic value corresponding to the first stress value, and store a second correction table including a second stress value corresponding to an accumulated value of image data of a second sub-pixel and a second characteristic value corresponding to the second stress value;
- and
- a compensation control module configured to generate a second compensation value for the second sub-pixel by using a first sensing value of the first sub-pixel detected in a characteristic value sensing period of the first sub-pixel and the second sub-pixel, and update the first correction table.
Dependencies are inferred from the claim text.