Method for making light guide board
A light guide plate and mold technology, applied in light guides, optics, optical components, etc., can solve problems such as poor viewing angle convergence, large exit angle, and low intensity, and achieve the effect of improving viewing angle convergence, light output uniformity, and good uniformity
Inactive Publication Date: 2012-08-29
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
View PDF3 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
However, diffuse reflection will also make the exit angle of the light emitted from the light exit surface 212 of the light guide plate 21 larger at the same time, and the viewing angle convergence is poor, thus resulting in a low intensity of light exited from the light exit surface 212 of the light guide plate 21
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0020] The light guide plate and the preparation method of the present invention will be further described in detail with reference to the accompanying drawings and multiple embodiments.
[0021] Please also refer to image 3 and Figure 4 , the first preferred embodiment of the present invention provides a light guide plate 30 . The light guide plate 30 is square and includes a light emitting surface 312 , a bottom surface 314 opposite to the light emitting surface 312 , and four light incident surfaces 316 connecting the light emitting surface 312 and the bottom surface 314 . The bottom surface 314 is formed with a plurality of microstructures 318 with the same shape, and the microstructures 318 are pyramid-shaped protrusions. A plurality of microstructures 318 are arranged in an array on the bottom surface 314 , and the end of each microstructure 318 forms a rough surface with a rough surface, and the side surface of each microstructure 318 forms a smooth mirror surface. ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a preparation method for a light guide plate, which comprises the steps of heating a transparent resin to be in a melted state as the material for the light guide plate; injecting the melted transparent resin into a molding chamber of an injection mold, wherein the injection mold includes a first mold and a second mold. the first mold defines a molding groove and the second mold cooperates with the molding groove of the first mold so as to form the molding chamber; and solidifying the melted transparent resin in the molding chamber to form a light guide plate, wherein a plurality of projection microstructures are formed on one surface of the light guide plate and each projection microstructure comprises a specular reflection part and a diffuse reflection part. The specular reflection part is formed on the lateral surface of the projection and the diffuse reflection part is formed on the end portion of the projection. The second mold includes a first matrix, a first mold kernel and a second mold kernel. The matrix is provided with an embedding groove matched with the molding groove of the first mold. The first mold kernel and the second mold kernel are successively arranged on the inner side of the embedding groove.
Description
technical field [0001] The invention relates to a method for preparing a light guide plate, in particular to a method for preparing a light guide plate for a side-mounted backlight module. Background technique [0002] Since the liquid crystal itself of the liquid crystal display panel does not have light-emitting characteristics, in order to achieve the display effect, it is necessary to provide the liquid crystal display panel with a surface light source device, such as a backlight module, whose function is to supply a surface light source with sufficient brightness and uniform distribution to the liquid crystal display panel. [0003] see figure 1 , a side-mounted backlight module 10 using an existing light guide plate, which includes a light guide plate 11 , a light source 13 , a reflection plate 15 , a diffusion sheet 17 and a prism sheet 19 . The light guide plate 11 includes a light emitting surface 112 , a bottom surface 114 opposite to the light emitting surface 11...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/00G02F1/1335B29D11/00B29C39/26
CPCG02B6/0036
Inventor 朱文武
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD