Liquid crystal display device and its led packaging structure

Abstract

A liquid crystal display device and an LED packaging structure thereof. The LED packaging structure (20) comprises an LED chip (21) and a frame body (22) accommodating the LED chip (21). The frame body (22) comprises a bottom wall (221, 421), a first side wall (222, 422), and a light-out wall (225). The LED chip (21) is disposed on the bottom wall (221, 421). The first side wall (222, 422) is disposed in the light-out direction of the LED chip (21) in an inclined manner. The light emitted by the LED chip (21) is reflected by the first side wall (222, 422), and then output through the light-out wall (225). In the liquid crystal display device and the LED packaging structure (20) thereof, the light mixing distance of the LED chip (21) is increased, so as to avoid the dead zone of light-emitting, thereby eliminating the phenomenon of mixed light and shade.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a liquid crystal display device and an LED packaging structure thereof. Background technique [0002] At present, the application of liquid crystal display devices is becoming more and more popular. In the prior art, liquid crystal display devices include a backlight module. The backlight module includes a light source module and a light guide plate. The light source module is arranged on the light incident surface of the light guide plate. Light Emitting Diode (LED). All LED lights have a certain range of viewing angles, such as oval LED lights. Such as figure 1 As shown, the viewing angle range of the elliptical LED lamp 11 is 120°. When the LED lamps 11 are arranged in a straight line on the light guide plate 12, there is a blind spot between two adjacent LED lamps 11 due to the limitation of the viewing angle range. If the light incident surface of the light guide plate 1...

AI Technical Summary

Problems solved by technology

like figure 1 As shown, the viewing angle range of the elliptical LED lamp 11 is 120°. When the LED lamps 11 are arranged in a straight line on the light guide plate 12, there is a lighting blind area between two adjacent LED lamps 11 due to the limitation of the viewing angle range.

If the light incident surface of the light guide plate 12 is very close to the LED lamp 11, no light will pass through the light guide plate 12 located in the blind area, and the corresponding area of ​​the blind area will be relatively dark, while other areas irradiated by the LED lamp 11 will be brighter. There is an obvious alternation of light and dark, which in turn leads to the phenomenon of light and dark separation (Hot Spot) at the light entrance of the liquid crystal display device, resulting in poor light mixing

If the distance between the light guide plate 12 and the LED lamp 11 is increased, although the Hot Spot problem can be eliminated, the viewing angle range of the LED lamp 11 is reduced, so that the utilization rate of light decreases

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