Light guide device and manufacturing method thereof, backlight module and display device
A technology of a light guide device and a manufacturing method, which is applied in the directions of light guide, optics, optical components, etc., can solve the problems of complicated control method and reduce the light output rate of the exported light, and achieve the effect of simple control method, easy implementation and high light output efficiency.
Active Publication Date: 2019-08-06
BOE TECH GRP CO LTD
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Problems solved by technology
[0003] However, if figure 1 As shown, since the device adopts a structure in which the metal electrode 17 and the grating overlap, the light extraction rate of the exported light is reduced.
Moreover, the device needs to be equipped with a liquid crystal cell to control the grating, and its control method is relatively complicated.
Method used
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[0027] A number of embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0028] figure 2 It is a schematic cross-sectional view of a light guide device for realizing a collimated surface light source according to an embodiment of the present invention. image 3 for figure 2 A magnified view of a portion of the bulge in .
[0029] Such as figure 2 and image 3 As shown, the light guide device according to the embodiment of the present invention includes an optical waveguide layer 100 and a reflective layer 110 , and one surface of the reflective layer 110 (shown as the upper surface of the reflective layer) is in contact with the optical waveguide layer 100 . The surface of the reflective layer includes a plurality of protrusions 113 each including a first surface 114 serving as a reflective surface in this embodiment. Such as image 3 As shown, the first surface 114 forms a first angle θ1 with respect to ...
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The present disclosure has disclosed a light guide device, comprising an optical waveguide layer (100), and a reflection layer (110) one surface of which is connected with the optical waveguide layer, said one surface including a plurality of protrusions (113), each protrusion including a first surface (114) forming a first angle (θ1) with respect to a surface of the optical waveguide layer, and a first intersection line (116) between a plane in which the surface of the optical waveguide layer is located and a plane in which the first surface is located being perpendicular to a light guiding direction of the optical waveguide layer. The present disclosure has disclosed a manufacturing method of a light guide device as well as a backlight module and display device including the light guide device at the same time.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a light guide device, a manufacturing method thereof, a backlight module and a display device. Background technique [0002] A collimated surface light source is generally realized by converting a point light source or a line light source into a surface light source. For example figure 1 Shown is a schematic cross-sectional view of a prior art light guide device for realizing a collimated surface light source, the light guide device includes an upper substrate 10, a liquid crystal layer 15, a waveguide layer 12, a buffer layer 13 and a lower substrate stacked in sequence 14. The side of the liquid crystal layer 15 is fixed with a sealant 12, and the liquid crystal layer 15 constitutes a transmissive grating. The collimated light from the collimated point / line light source 16 is incident on the waveguide layer 12, the buffer layer 13 and the lower substrate 14, and the light em...
Claims
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IPC IPC(8): G02B6/00G02F1/13357
CPCG02B6/0055G02B6/0065G02F1/133606G02F1/133607G02B6/0053G02F1/133615
Inventor 马新利
Owner BOE TECH GRP CO LTD