Liquid crystal display device

Abstract

The invention provides a liquid crystal display device. The liquid crystal display device comprises a backlight module (20), a rubber frame (40) arranged above the backlight module (20), a liquid crystal display panel (60) installed in the rubber frame (40) and a front frame (80) installed on the liquid crystal display panel (60), wherein the backlight module (20) comprises a backboard (2), a light guide panel (4) arranged in the backboard (2), a backlight source (6) arranged in the backboard (2) and an optical membrane set (8) arranged on the light guide panel (4); the backlight source (6) comprises a printed circuit board (62) and a plurality of LED lamps (64) which are installed and electrically connected to the printed circuit board (62); the printed circuit board (62) comprises a side portion (622) and a bottom (624) vertically connected to the side portion (622); the rubber frame (40) is provided with an opening groove (42) corresponding to the backlight source (6); the side portion (622) of the printed circuit board (62) is contained in the opening groove (42).

Description

technical field [0001] The invention relates to the field of liquid crystal display, in particular to a liquid crystal display device. Background technique [0002] A liquid crystal display (Liquid Crystal Display, LCD) has many advantages such as a thin body, power saving, and no radiation, and has been widely used. Most of the liquid crystal display devices currently on the market are backlight liquid crystal display devices, which include a liquid crystal display panel and a backlight module. The working principle of the liquid crystal display panel is to place liquid crystal molecules between two parallel glass substrates. There are many vertical and horizontal small wires between the two glass substrates. The direction of the liquid crystal molecules is controlled by electrifying or not, and the light of the backlight module Refracted out to produce a picture. Since the liquid crystal display panel itself does not emit light, the light source provided by the backlight...

AI Technical Summary

Problems solved by technology

[0004] However, although the liquid crystal display device with this structure can realize a narrow frame, the heat dissipation of the LED lamp 104 in the backlight source 100 is a problem that cannot be ignored. Because only the bottom of the LED lamp 104 contacts the printed circuit board 102, its back directly against On the plastic frame 300, the plastic frame 300 is generally made of plastic material, and the heat dissipation is not high. Therefore, the heat generated by the LED lamp 104 will be extremely difficult to dissipate, and the LED lamp 104 will be easily damaged if used for a long time, reducing the temperature of the LED lamp. 104, and installing the LED lamp 104 by punching will easily tilt the LED lamp 104, causing poor contact of the LED lamp 104, affecting the luminous effect, and reducing the quality of the liquid crystal display device

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