Patent ID: 9607544
Date: 2017-03-28
CPC Classifications: G09G

Claim:
1. A brightness compensating method applicable to a self-illuminating display device, wherein a display screen of the self-illuminating display device has N zones including a reference zone with a compensation parameter G, and N is an integer larger than or equal to 2, and the G is larger than 0; and the method comprises: retrieving compensation parameters of at least a part of the N zones, wherein a change trend of a compensation parameter of a zone at higher temperature than temperature in the reference zone relative to the compensation parameter G is opposite to a change trend of a compensation parameter of a zone at lower temperature than temperature in the reference zone relative to the compensation parameter G; and compensating for brightness of an image displayed in the respective zones according to the compensation parameters; wherein when the reference zone is the zone at a highest temperature of the N zones, G is a compensation parameter of said zone at the highest temperature, all N−1 compensation parameters of the other N−1 zones are larger than G, and a largest one of N compensation parameters of the N zones is smaller than or equal to A, where A is a ratio of a value of brightness in a brightest one of the N zones to a value of brightness in a darkest one of the N zones when a fully white image is displayed by the self-illuminating display device; and wherein when the reference zone is the zone at a lowest temperature of the N zones, G is a compensation parameter of said zone at the lowest temperature, all compensation parameters of the other N−1 zones are smaller than G, and a smallest one of N compensation parameters of the N zones is larger than or equal to B, where B is a ratio of a value of brightness in a darkest one of the N zones to a value of brightness in a brightest one of the N zones when a fully white image is displayed by the self-illuminating display device.