Prism sheet of backlight module
A technology of backlight module and prism sheet, which is applied in the fields of optics, nonlinear optics, and components of lighting devices, etc., which can solve the problems of unfavorable production cost control, reduction of effective output area of producers, increase of waste of leftover material of mother chip 100, etc. question
Inactive Publication Date: 2010-03-10
CORE FLEX OPTICAL SUZHOU
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[0007] However, comparing figure 2 and image 3 , if it is desired to produce the prism sheet 100a and the prism sheet 100b of the same number, then image 3 The cutting method shown requires a larger total area of the mother sheet 100, and will greatly increase the waste of scraps of the mother sheet 100, directly causing the effective output area of the producer of the prism sheet 100b to decrease, which is not conducive to the control of production costs
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[0024] The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment in conjunction with the accompanying drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only directions with reference to the drawings. Accordingly, the directional terms are used to illustrate and not to limit the invention.
[0025] refer to Figure 4 , a prism sheet 200 for a backlight module, which includes a base 220 and a plurality of microstructure units 240a, 240b, 240c, . . . The base 220 has a side 222 that provides an extending direction V. As shown in FIG. A plurality of microstructure units 240a, 240b, 240c, . Da, Db, Dc, ... and extension lengths La, Lb, Lc, .... The extension directions Da, Db, Dc, . . . and the extension lengths La, Lb, Lc, .
[0026] The resulting vector S represents the ov...
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Abstract
The invention provides a prism sheet of a backlight module, which comprises a substrate and a plurality of microstructure units. The substrate is provided with a side edge having an extending direction; the plurality of microstructure units are jointed onto the surface of the substrate, and joint faces of the microstructure units jointed onto the surface of the substrate have different extending directions and extending lengths; and the extending directions and the extending lengths of the joint faces are combined to form a resultant vector, the direction of the resultant vector forms an included angle with the extending direction of the side edge of the substrate, and the range of the included angle is between -45 and +45 degrees.
Description
technical field [0001] The invention relates to a prism sheet of a backlight module, in particular to a prism sheet capable of alleviating optical interference phenomenon. Background technique [0002] A backlight module used in a liquid crystal display includes a plurality of different types of optical films, and one of the main optical films is a prism film, also known as a brightness enhancement film or a light collection film. [0003] refer to figure 1 , which is a schematic diagram of a conventional prism sheet 100a. The existing prism sheet 100a has a plurality of linear microstructures 120a on its surface for collecting light and increasing the brightness of the backlight module. [0004] figure 2 The manufacturing process of the conventional prism sheet 100a is shown. The microstructure 120 is fabricated on the master sheet 100 first, and then the master sheet 100 is cut. Each mother sheet 100 can be cut out into a plurality of existing prism sheets 100a. fi...
Claims
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IPC IPC(8): F21V5/02G02F1/13357
Inventor 陆龙翔丁清华
Owner CORE FLEX OPTICAL SUZHOU