Method and system for adaptively controlling dled TV backlight

Abstract

The invention discloses a self-adaption control method and system of a DLED TV backlight. The method comprises the following steps: based on a heat sensor on a diffuser plate, obtaining a first temperature value in a DLED backlight module optical cavity; judging whether the first temperature value is beyond a preset first temperature threshold or not; if the temperature value is beyond the preset first temperature threshold, controlling the color temperature generated from LED array reduction, and controlling interval narrowing among a plurality of brightening pieces. According to the embodiment, when the temperature value surpasses the temperature threshold, LED array reduction is controlled and color temperature emission is reduced, so that continuous temperature increase is reduced; and besides, a series of supplements for an LED array emitting light source can be achieved due to the intervals among the brightening pieces; when the color temperature decreases, the intervals among the brightening pieces are decreased, so that a certain supplement effect for light brightness can be achieved, and color temperature change due to LED array deletion is reduced.

Description

technical field [0001] The invention relates to the technical field of digital television, in particular to a method for adaptively controlling a DLED television backlight source and a television system. Background technique [0002] According to experts from the National Radio and Television Product Quality Supervision and Inspection Center, there are currently three main ways to apply LED light source technology in the field of LCD TVs: direct-type three-primary-color RGB-LED light source, direct-type white LED light source and side-type white LED light source. The thickness of the built-in white LED backlight is thicker, and the price is relatively low; the thickness of the direct-lit white LED (DLED) backlight is thicker, the backlight can be dynamically controlled, the color performance can be greatly improved, and the design cost is also low. Features such as low power consumption. The existing DLED backlight module structure does not use a light guide plate, which ha...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for adaptively controlling the DLED TV backlight source and a TV system to adjust the DLED backlight source through self-adaptive detection of temperature changes in view of the short service life of the existing over-temperature damage device Medium LED color temperature change, reducing device loss

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