Optical brightness enhancement film and manufacturing method thereof

A brightness-enhancing film and optical technology, which is applied in the field of optics, can solve problems such as light interference and easy scratching of the brightness-enhancing film, and achieve the effects of improving covering performance, facilitating operation, and saving production costs
CN106199788APending Publication Date: 2016-12-07NINGBO EXCITON TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
NINGBO EXCITON TECH
Publication Date
2016-12-07

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Abstract

The invention relates to the technical field of optics, and particularly relates to an optical brightness enhancement film applied to a liquid crystal display, so as to solve the problems that the existing brightness enhancement film is likely to scratch and optical interference is likely to happen. The optical brightness enhancement film provided by the invention comprises a substrate layer and a light-gathering microprism structure layer, wherein the light-gathering microprism structure layer is bonded on the surface of the substrate layer; the light-gathering microprism structure layer comprises a plurality of microprism columns; each microprism column is provided with a crest line with a high height and two valley lines located at the left side and the right side of the crest line and low heights, and the valley lines of adjacent microprism columns are mutually overlapped; the angle of the crest line of the microprism column is called a microprism crest angle; the microprism crest angle is provided with arc-shaped convex structures symmetric relative to the microprism crest angle; and the surface profile in the cross section of the arc-shaped convex structure is arc-shaped. The optical brightness enhancement film of the invention has the anti-scratching performance and interference reduction performance, and also, high brightness and a wide viewing angle are provided.
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Description

technical field

[0001] The invention relates to the field of optical technology, in particular to an optical brightness enhancement film applied to a liquid crystal display. Background technique

[0002] Brightness Enhancement Film (BEF, Brightness Enhancement Film), also known as Brightness Enhancement Film or Prism Sheet, plays the role of converging the light emitted by the light source to increase the display brightness and save the energy of the display battery device. The principle of the Brightness Enhancement Film is to use A layer of microprism structure on its surface adjusts the light emitted outside the observer's viewing angle to within the viewing angle of the observer through refraction and reflection, so as to improve the brightness of the LCD and the utilization rate of the emitted light energy. Therefore, the brightness enhancement film is one of the most important optical films widely used in the backlight module of the liquid crystal display.

[0003] Ex...

Claims

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