Lateral incidence type backlight module and liquid crystal television

Abstract

The invention discloses a lateral incidence type backlight module and a liquid crystal television. The backlight module comprises a rectangular light guide plate and LED (Light-Emitting Diode) lamp bars, wherein the light guide plate is composed of two parallel long sides and two parallel short sides; arc-shaped sides for smooth transitional connection are arranged at the joints of the long sides and the short sides; the LED lamp bars are arranged at the outer sides of the arc-shaped sides; the LED lamp bars are arc-shaped to be adaptable to the arc-shaped sides; and the LED lamps on the LED lamp bars are arranged towards the arc-shaped sides. As the light guide plate with arc-shaped corners is adopted, and the arc-shaped LED lamp bars are arranged on the arc-shaped corners, the number of used LED lamps is reduced greatly while the same brightness requirement is satisfied, and the cost of the lateral incidence type backlight module is also reduced obviously; and as the arc-shaped LED lamp bars are dispersed at the four corners of the light guide plate, the disadvantage of too intensive heat energy generated by the traditional LED lamp bars which are arranged on the upper sides or the short sides is avoided, heat dissipation effects are improved efficiently, and service life of the LED lamps is prolonged.

Description

technical field [0001] The invention relates to the field of LED backlight modules in liquid crystal televisions, in particular to a side-entry backlight module with low cost and good heat dissipation effect. Background technique [0002] With the sharp increase in the demand for LED LCD TVs in China, the field of LED backlight modules is developing rapidly. In addition to the requirements of low cost, energy saving, and high performance, various TV manufacturers have launched their own ultra-low-cost LED LCD TVs to seize a certain market share. market share [0003] From the perspective of energy saving, environmental protection, and ultra-low cost, the light incident mode of side-lit LED backlight modules has gradually changed from four-sided light incident to single-sided or double-sided light incident. At present, because LED LCD TVs are facing huge cost pressures, how to better reduce the cost of LED backlight modules has become a major challenge for the industry. [...

AI Technical Summary

Problems solved by technology

[0005] However, due to the large number of LEDs used in the light bar, not only the cost is high, but there is no price advantage in the highly competitive market, and the large number of LEDs also puts forward higher requirements for the heat dissipation of the backlight. If the heat dissipation is not good, it will Greatly shorten the service life of LED

[0006] Therefore, prior art still needs to improve and develop

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