Light-collecting type light guide plate and display device
A display device, light-collecting technology, applied in the direction of light guide, flat/plate-shaped light guide, light guide of lighting system, etc., can solve the problems of thinning limitation of backlight module and high production cost, reduce the thickness of the whole machine, and improve the brilliance Degree value, the effect of suppressing stray light
Active Publication Date: 2021-11-16
YANGXIN TECH SUZHOU +1
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Problems solved by technology
However, the configuration of this type of double-layer BEF has restrictions on the thinning of the backlight module, and the production cost is relatively high
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[0043] The foregoing and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only referring to the directions of the drawings. Accordingly, the directional terms are used to illustrate and not to limit the invention.
[0044] figure 1 is a schematic diagram of a display device according to the present invention. Figure 2A and Figure 2B yes figure 1 Schematic side views of the display device in different orientations. image 3 yes figure 1 The luminance distribution diagram of the backlight module under different viewing angles. Figure 4 It is a luminance distribution diagram of a backlight module of a comparative example under different viewing angles. Figure 5 yes Figure 2A The graph of the lig...
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The invention provides a light-collecting type light guide plate. The light-collecting type light guide plate comprises a light-emitting surface, a bottom surface, a light-entering surface, a plurality of protruding structures and a plurality of grooves, the light-entering surface is connected between the light-emitting surface and the bottom surface. The protruding structure is arranged on the bottom surface. The protruding structures are arranged along a first direction and extend towards a second direction. The protruding structures have a light collecting angle in the first direction, and the light collecting angle ranges from 10 degrees to 40 degrees. The grooves are arranged in the protruding structures of the light collecting type light guide plate. The trenches extend in a first direction. Each protruding structure is provided with a light-facing surface which defines each groove and is closer to the light-entering surface, and the included angle between the light-facing surface and the bottom surface ranges from 35 degrees to 65 degrees. The invention also provides a display device adopting the light-collecting type light guide plate. The light-collecting type light guide plate and the display device provided by the invention have better light collecting performance.
Description
technical field [0001] The present invention relates to an illumination and display technology, and in particular to a light guide plate and a display device. Background technique [0002] With the increasing application of non-self-luminous displays such as liquid crystal displays, the design of the backlight module also needs to be adjusted for different usage scenarios. In order to improve the light energy utilization efficiency of the light source, the backlight module equipped with an optical Brightness Enhancement Film (BEF) has become a mainstream in the market. Generally speaking, this type of backlight module is equipped with a laminated structure of two optical brightness enhancement films (such as two prism sheets whose extending directions of prisms are perpendicular to each other) and two diffusion sheets, which can emit light from the light guide plate at a large angle. The beam guiding covers a specific angle range of the normal viewing angle, so as to improv...
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IPC IPC(8): G02B6/00
CPCG02B6/0016G02B6/0038G02B6/003G02B6/0091G02B6/0051G02B6/0055
Inventor 周明谕黄新郭浩然刘冠彣陈允超
Owner YANGXIN TECH SUZHOU