Optical film having pervasion and light enhancing effect

Abstract

The invention relates to a optic film with effect of pervasion and intensifying, it possesses a light incidence surface and light outgoing surface, the light outgoing surface possesses a first refraction part, the transect of the first refraction part possesses a first arc surface and a second arc surface, and a second refraction part is between the first and the second arc surface, the second refraction part possesses a first incline and the second incline, and the first and the second incline is intersected to form a angle, so a effect of pervasion and intensifying can be provided, and optic fill with high choiceness ratio can be made, it can improve brilliancy for about 1.55 times or above.

Description

Technical field [0001] The invention relates to an optical film, in particular to an optical film applied to a backlight module of a flat-panel display and having both diffusion and brightness enhancement effects. Background technique [0002] At present, flat-panel displays mainly include TFT-LCD thin film transistor liquid crystal displays, PDP plasma displays and rear projection displays. As major manufacturers in Japan, South Korea, and Taiwan have actively invested in the R&D, production of TFT-LCD liquid crystal displays, and the use of large-scale production equipment, as the current quality of liquid crystal displays continues to improve, their prices have continued to decline, thereby driving In response to the demand for liquid crystal displays, TFT-LCD displays have become the mainstream of current flat-panel displays. [0003] The LCD panel itself cannot emit light, and a backlight module is needed to provide the light source of the display. Generally speaking, the ba...

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Problems solved by technology

[0005] However, the right-angled vertex on the surface of the prism sheet is very easy to be damaged by accidental collision during manufacture and transportation, and damage to any part of the prism sheet will cause major defects such as bright spots on the display panel, which cannot be used by users. Accepted, and the rate of high-quality products is also low, which has caused great troubles to manufacturers; therefore, there is another known practice, which is to flatten or fillet the tip of the top corner to make the top corner The corners are not easy to be damaged, thereby improving the quality rate of its production, but this method will greatly reduce the light-gathering effect of the prism sheet, and cannot provide a backlight with sufficient brightness; and the existing conventional technology is to increase the light and The light diffusion is treated separately, and the purpose of light enhancement and diffusion is achieved by a combination of a diffusion plate and one or two light enhancement plates. It is impossible to integrate them together, and the manufacturing cost is also greatly increased.

[0006] This shows that the backlight module of the above-mentioned existing display obviously still has inconvenience and defects in structure and use, and needs to be further improved urgently.

In order to solve the above-mentioned problems, the relevant manufacturers have tried their best to find a solution, but for a long time no suitable design has been developed, and the general product has no suitable structure to solve the above-mentioned problems. problem to be solved

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