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Backlight module with stable gaps from LED (Light-Emitting Diode) lamps to light guide plate

A technology of LED lamp group and LED lamp, which is applied in the direction of light source fixing, light source, electric light source, etc. It can solve the problems of complex operation and high requirements for the mechanical design of shrapnel, and achieve the effect of simple process, maintaining optical stability and low cost

Inactive Publication Date: 2013-04-10
ANHUI KONKA ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is complicated to operate and requires high mechanical design of the shrapnel.

Method used

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  • Backlight module with stable gaps from LED (Light-Emitting Diode) lamps to light guide plate
  • Backlight module with stable gaps from LED (Light-Emitting Diode) lamps to light guide plate
  • Backlight module with stable gaps from LED (Light-Emitting Diode) lamps to light guide plate

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Embodiment Construction

[0022] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments and accompanying drawings.

[0023] Such as image 3 , Figure 4 As shown, a backlight module with a stable gap between the LED lamp and the light guide plate includes an LED light bar 4 composed of a PCB board 42 and an LED lamp group 41 and a light guide plate 2, and a gap is left between the LED lamp group 41 and the light guide plate 2 The gap, the spacer 1 is fixed on the PCB board 42, the thickness of the spacer 1 is greater than the thickness of the LED lamp group 41, the light guide plate 2 is set close to the spacer 1, and the difference between the thickness of the spacer 1 and the thickness of the LED light group 41 is the light guide plate 2 to the gap 3 of the LED lamp group 41, the specific difference is subject to design requirements....

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Abstract

The invention provides a backlight module with stable gaps from LED (Light-Emitting Diode) lamps to a light guide plate and relates to the field of an LED backlight module. The backlight module comprises an LED light bar and the light guide plate, wherein the LED light bar is formed by a PCB (Printed Circuit Board) board and an LED lamp bank; and a gap is reserved between the LED lamp bank and the light guide plate. The backlight module is characterized in that the LED lamps and a cushion block are fixed on the PCB board; the thickness of the cushion block is greater than that of each LED lamp; the difference between the thickness of the cushion block and the thickness of each LED lamp is equal to the gap from the light guide plate to the LED lamp; the cushion block has a certain strength, is difficult to deform and can bear an expansive force of the light guide plate and an impact force of the light guide plate in the transporting process; the gap value from the LED lamp bank to the backlight module is stable, so that optical stability of the backlight module is effectively kept and the performance problems of light leakage, light loss and the like which are caused by variation of the gap from the light guide plate to the LED lamp bank are solved; and moreover, a fixing manner of the cushion block has a simple process, the cost is low and production efficiency is high.

Description

Technical field: [0001] The invention relates to an LED backlight module, in particular to a side-entry light source LED backlight module for liquid crystal displays or televisions. Background technique: [0002] With the development of LED lamp technology and customers' demand for thinner and lighter LCD monitors and LCD TVs, the backlight module of side-in LED light source (LED lamp placed on the side of the light guide plate) has become an existing technology in the past two years. mainstream technology. Existing backlight modules include structural components such as light guide plates, LED lamp groups, heat sinks, and backplanes. Since the light guide plate will expand when heated, and there are dimensional tolerances between the LED lamp group and the light guide plate components, a certain gap needs to be left between the surface of the LED lamp and the light incident surface of the light guide plate. The gap between the LED lamp group and the light guide plate will...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S8/00F21V17/10F21Y101/02
Inventor 杨梅慧程前庚江杰伟
Owner ANHUI KONKA ELECTRONICS
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