Light diffusion plate and light guide plate having micro structure

A light diffusing plate and microstructure technology, applied in the directions of light guides, optics, optical components, etc., can solve the problems of incomplete molding of the second convex part, difficult to fully squeeze in, and weaken the brightness effect, so as to reduce the cost and increase the turnover. The effect of write rate

CN102466830AInactive Publication Date: 2012-05-23CHI MEI CORP
6 Cites 4 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2012-05-23
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a light diffusion plate and a light guide plate having micro structure. The light diffusion plate and the light guide plate include substrates and a plurality of micro structures disposed on the substrate. Each of the micro structures includes a first projection and a second projection connecting with the first projection in a direction departing from the substrates. The substrate and the first projection are all formed by heat plasticity resin material. The first projection is provided with a projection interface projection from the substrate and connecting with the second projection. The second projection is made of photosensitive resin material and is provided with an outer surface separated with the projection interface of the first projection. Through controlling that the minimum vertical distance between the outer surface of the second projection and the projection interface of the first projection is less than 5 micro meters and the firt projection and the second projection adopt resin raw material having different liquidity, not only the high transferring rate can be realized, but also the costs of manufacturing the light diffusion plate and the light guide plate are reduced.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The present invention relates to a light diffusion plate and a light guide plate, in particular to a structured light diffusion plate and a light guide plate with microstructures on the surface and the thickness of the plate itself is much greater than the thickness of the microstructure on it, and a light diffusion plate and light guide plate capable of achieving a high transfer rate light guide plate. Background technique

[0002] refer to figure 1 , showing an optical plate structure of a conventional backlight module, which uses a co-extrusion process to stack a double-layer microstructure optical plate, mainly including a substrate 7 and a plurality of microstructures 8 formed on the substrate 7 . Each microstructure 8 includes a first protrusion 81 and a second protrusion 91 above the first protrusion 81 . The first convex portion 81 and the second convex portion 91 are respectively composed of a first thermoplastic resin and a second thermopl...

Examples

Embodiment Construction

[0026] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0027] The foregoing and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of three preferred embodiments with reference to the drawings.

[0028] Before the present invention is described in detail, it should be noted that in the following description, similar elements are denoted by the same numerals.

[0029]

[0030] refer to figure 2 and image 3 , the first preferred embodiment of the present invention is to use a molding device 5 to produce a light diffusion plate with microstructures, the molding device 5 includes a molding die 51 and a lighting unit 53 . The stamper mold 51 has a plurality of transfer microstructures 512 arranged side by side, and the transfer microstructures 512 jointly define a mold cavity 511 . In addition, a substrate 1 with a thic...