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An asymmetric lens and its backlight module

A backlight module, asymmetric technology, applied in the field of lens technology and backlight display, can solve the problems of poor light efficiency, high cost, uneven brightness of backlight module, etc. The effect of the number of bars

Active Publication Date: 2019-11-15
NINGBO ZHENGTE OPTICAL ELECTRIC APPLIANCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to solve the problems of uneven brightness, poor light efficiency and high cost of the backlight module in the traditional technology

Method used

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  • An asymmetric lens and its backlight module
  • An asymmetric lens and its backlight module
  • An asymmetric lens and its backlight module

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Embodiment 2

[0048] Embodiment two: if Figure 10 as shown, Figure 10 It is a schematic diagram of the structure of the 43-inch backlight module provided by Embodiment 2 of the present invention. The OD value of the 43-inch backlight module is 30 mm, that is, the maximum distance from the bottom of the diffusion plate 102 to the bottom of the cavity 400 is 35 mm; the model of the CSP light source is Seoul WICOP 1313 , the PCB board of the light bar 300 is a copper-clad aluminum substrate, and the surface ink is a high anti-water accumulation ink. The number of the light bar 300 is 2PCS, the number of the CSP light source and the asymmetric lens is 10PCS, and the distance between the light sources is 85mm , the distance between the light bars is 220mm, the external dimensions of the asymmetric lens are 28mmX26.6X8.867mm; the reflective paper 200 is made of RA, with a thickness of 0.188mm or 0.255mm; the thickness of the diffuser plate 102 is 1.2mm, and the optical The film sheet 101 is a ...

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Abstract

The invention discloses an asymmetric lens and a backlight module thereof, and relates to the technical field of lens technology and backlight display. By the aid of Light tools simulation design, round spots emitted by CSP (chip scale package) light sources are shaped into long elliptical spots by the asymmetric lens, the working distance between lamp strips is extended, and the light sources are centralized on the lamp strips. Compared with a traditional direct-light-type backlight module, the backlight module has the advantages that the number of PCBs (printed circuit boards) with high cost can be reduced, so that production cost is reduced, besides, the corner brightness of the module can be improved by the long elliptical spots, and brightness uniformity of the whole backlight module is improved, so that the asymmetric lens and the backlight module thereof are high in brightness uniformity, high in light effect and low in cost.

Description

technical field [0001] The invention relates to the field of lens technology and backlight display technology, in particular to an asymmetric lens and a backlight module. Background technique [0002] In the field of existing liquid crystal displays, since the liquid crystal molecules themselves do not have the ability to emit light, an external light source is required to obtain the display screen in the existing liquid crystal display. At present, light-emitting diodes are mostly used as light sources. LED light source is extended to surface light source output. At present, the backlight modules of display devices can be divided into two types: side-type and direct-type. Compared with side-type backlight modules, direct-type backlight modules do not need to be equipped with light guide plates, and because of the advantage of low price, deep Popular with consumers, side-type backlight modules have no advantage in price compared to direct-type backlight modules because they...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/13357G02B27/09
CPCG02B27/0955G02F1/133602G02F1/133605G02F1/133606G02F1/133607
Inventor 章奇
Owner NINGBO ZHENGTE OPTICAL ELECTRIC APPLIANCE