LCM backlight source

Abstract

The invention relates to an LCM backlight source. The backlight source comprises an aluminum alloy protective frame, a light transmitting glass protective plate, an LED backlight FPC, a light guidingplate, a diffusion plate, a diffusion intensifying plate and a light blockage glue frame, the light transmitting glass protective plate, the diffusion plate, the diffusion intensifying plate and the lifht guiding plate are sequentially bonded together from top to bottom, the light guiding plate is wrapped with the aluminum alloy protective plate, the LED backlight FPC tightly adheres to the side wall of one end of the light guiding plate and is fixed to the end part of the aluminum alloy protective frame, the light blockage glue frame is arranged between the light transmitting glass protectiveplate and the diffusion plate, protrusions are arranged on the diffusion plate and a pair of the long side edges of the diffusion intensifying plate, grooves which can clamp the protrusions togetherare formed in a pair of long side edges of the aluminum alloy protective frame, the LED backlight FPC comprises an FPC body and LED light beads, the end part of the FPC body is provided with a leadingend, and the LED light beads are welded to the FPC body by adopting a connection manner of two series connection and N parallel connection and are connected with the leading end through a guiding wire. According to the LCM backlight source, the structure is simple and stable, the heat dissipation performance is good, and the backlight effect is excellent.

Description

technical field [0001] The invention relates to the technical field of LCM, in particular to an LCM backlight source. Background technique [0002] LCM (LCD Module) is LCD display module and liquid crystal module, which refers to the assembly of liquid crystal display devices, connectors, driver ICs, FPC circuit boards, backlight sources and structural parts. Since the liquid crystal display device is a non-luminous device, it needs a backlight source to achieve the display function. According to the different light sources used in the backlight, there are mainly CCFL, LED, EL, OLED and other backlight types at present, and because the LED backlight has excellent color gamut display, its control circuit is simple, the driving voltage is low, and the cost is low. Sex, LED backlight is still the mainstream LCM backlight. However, during the use of LED lamp beads, more than 70% of the energy is converted into heat energy. If the heat energy is not discharged in time, the temp...

AI Technical Summary

Problems solved by technology

However, during the use of LED lamp beads, more than 70% of the energy is converted into heat energy. If the heat energy is not discharged in time, the temperature of the LED lamp beads will rise, which will affect the service life of the LED lamp beads and reduce the The brightness of the LED lamp bead is reduced, which reduces the performance of the LED backlight

In addition, since the LED lamp beads of the LED backlight are connected in M ​​(M ≥ 3) series and N in parallel, the structure of the driver IC and the FPC circuit board is complicated and the loss is high

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