Polarized light converter, method for fabrication and backlight component

Abstract

The related back light module comprises: a guide plate with an incidence plane and an opposite emergent plane and bottom plane, a light source on one side of incidence plane, a 1 / 4 slide between the plate and reflector, a reflector on the bottom plane, and a polarization light converter with the first / second lens plate and polarization splitting film near the emergent plane, wherein the lenses of the first and second lens plates engage with each other to clamp the light splitting film together. This invention has simple structure and convenient to assemble.

Description

【Technical field】 [0001] The invention relates to a polarized light converter, a manufacturing method of the polarized light converter and a backlight module using the polarized light converter. 【Background technique】 [0002] Since the liquid crystal display is a non-luminous display device, a backlight module is required to produce a display function. The performance of the backlight module often directly affects the image quality of the liquid crystal display, so the backlight module becomes a more important component in the liquid crystal display. With the expansion of liquid crystal displays in the application fields such as mobile phones, car displays, personal digital assistants (Personal Digital Assistant, PDA) and televisions, higher requirements are put forward for backlight modules, mainly in: high brightness, low cost, Low energy consumption, light and thin, etc. [0003] see figure 1 A prior art backlight module 10 includes a light guide plate 12 , a light so...

AI Technical Summary

Problems solved by technology

[0006] But when a certain interval 19 is reserved between the two opposite surfaces 163, 183 of several upward and downward microprisms 162, 182, a positioning mechanism is required to locate the downward prism plate 18 when assembling, so as to be used to align with the upward prism plate. Keep a certain interval 19 between 16, so there are problems such as complex structure, cumbersome assembly, more time-consuming, higher positioning accuracy requirements; 0.2, so there is a problem that it is difficult to select materials during manufacturing

[0007] When several upward and downward microprisms 162, 182 do not reserve the interval 19, then it is required that the materials of the upward prism plate 16 and the downward prism plate 18 are different, and their refractive index difference will be set between 0.001 and 0.2. The structure has the problem of difficult material selection during manufacture

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