Pixel compensation method and system, display device
AssigneeBoe Technology Group Co., Ltd.
InventorsSong Meng, Zhongyuan Wu
Life of this patent
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Abstract
A pixel compensation method includes: detecting driving transistors of pixels to obtain present characteristic values of the driving transistors of the pixels; extracting historical compensation characteristic values of the driving transistors of the pixels obtained in a previous display cycle of a screen; calculating a present compensation characteristic value of at least one driving transistor of the pixels according to a present characteristic value and a historical compensation characteristic value corresponding to the driving transistor of the pixels; and compensating a corresponding pixel according to the present compensation characteristic value of the driving transistor of the pixels.
Claims18
A pixel compensation method, comprising:
- detecting driving transistors of pixels to obtain present characteristic values of the driving transistors of the pixels;
- extracting historical compensation characteristic values of the driving transistors of the pixels obtained in a previous display cycle of a screen;
- calculating a present compensation characteristic value of at least one driving transistor of the pixels according to a present characteristic value and a historical compensation characteristic value corresponding to the driving transistor of the pixels;
- and
- compensating a corresponding pixel according to the present compensation characteristic value of the driving transistor of the pixels;
- wherein calculating the present compensation characteristic value of the at least one driving transistor of the pixels according to the present characteristic value and the historical compensation characteristic value corresponding to the driving transistor of the pixels, includes:
- calculating a difference value between the present characteristic value and the historical compensation characteristic value, wherein the difference value is a difference between the present characteristic value and the historical compensation characteristic value;
- determining a step value according to the difference value, wherein the step value is greater than 0 and less than an absolute value of the difference value;
- comparing the present characteristic value with the historical compensation characteristic value;
- and
- calculating the present compensation characteristic value according to the present characteristic value, the historical compensation characteristic value and the step value, including:
- setting the present compensation characteristic value as a sum of the historical compensation characteristic value and the step value in a case where the present characteristic value is greater than the historical compensation characteristic value;
- and setting the present compensation characteristic value as a difference between the historical compensation characteristic value and the step value in a case where the present characteristic value is less than the historical compensation characteristic value.
A pixel compensation system, comprising a main control chip, a gate driver and a source driver, wherein the main control chip is electrically connected to the gate driver and the source driver, and the gate driver and the source driver are configured to be electrically connected to a pixel circuit, which includes a driving transistor, of each pixel, wherein
- the main control chip is configured to:
- detect driving transistors of pixels to obtain present characteristic values of the driving transistors of the pixels;
- extract historical compensation characteristic values of the driving transistors of the pixels obtained in a previous display cycle of a screen;
- and
- calculate a present compensation characteristic value of at least one driving transistor of the pixels according to a present characteristic value and a historical compensation characteristic value corresponding to the driving transistor of the pixels;
- and
- the gate driver and the source driver are configured to compensate corresponding pixels using the obtained present compensation characteristic values of the driving transistors of the pixels
- wherein the main control chip is further configured to:
- calculate a difference value between the present characteristic value and the historical compensation characteristic value, wherein the difference value is a difference between the present characteristic value and the historical compensation characteristic value;
- determine a step value according to the difference value, wherein the step value is greater than 0 and less than an absolute value of the difference value;
- compare the present characteristic value with the historical compensation characteristic value;
- and
- calculate the present compensation characteristic value according to the present characteristic value, the historical compensation characteristic value and the step value,
- wherein in a case where the present characteristic value is greater than the historical compensation characteristic value, the present compensation characteristic value is a sum of the historical compensation characteristic value and the step value;
- and in a case where the present characteristic value is less than the historical compensation characteristic value, the present compensation characteristic value is a difference between the historical compensation characteristic value and the step value.
Dependencies are inferred from the claim text.