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US 2016/0111042 A1Published application
Display device and power control device
AssigneeLG Display Co., Ltd.
InventorMyungJin PYEON
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Abstract
A display device and a power control device capable of preventing the degradation of image quality that may occur unexpectedly by performing the sub-pixel luminance deviation compensation. The display device can include an analog-to-digital converter, a timing controller, a power generator, and a power controller, among other components. The power control device can include a power generator and a power controller, among other components.
Claims12
A display device comprising:
- an analog-to-digital converter that is connected to a sensing line connected to a sensing node within a sub-pixel on a display panel and converts a voltage at the sensing node sensed via a sensing line into a digital value with reference to the voltage of a sensing reference power to output sensing data;
- a timing controller that is connected to the analog-to-digital converter via a sensing data transmission line, calculates a data compensation amount based on the sensing data input through the sensing data transmission line, and stores the calculated data compensation amount in a memory;
- a power generator that generates or regenerates the sensing reference power and then outputs the sensing reference power;
- and
- a power controller that, when the sensing reference power is input from the power generator, outputs the sensing reference power to the analog-to-digital converter or controls the power generator to regenerate the sensing reference power.
2 more elements
A display device comprising:
- an analog-to-digital converter that converts an analog voltage value to a digital value based on a conversion reference voltage;
- and
- a power control device that generates the conversion reference voltage and outputs the generated conversion reference voltage to the analog-digital converter, wherein the generated conversion reference voltage is within a predetermined range.
A power control device comprising:
- a power generator that generates and outputs a sensing reference power which serves as a reference when an analog-to-digital converter converts a voltage at a sensing node within a sub-pixel on a display panel into a digital value;
- and
- a power controller that outputs a sensing reference power to the analog to digital converter when the voltage of the sensing reference power input from the power generator is within a predetermined voltage range, and controls the power generator to regenerate the sensing reference power when the voltage of the sensing reference power input from the power generator is out of the predetermined voltage range.
Dependencies are inferred from the claim text.