Light guide structure, direct type backlight module and display panel
A light guide structure and backlight module technology, applied in optics, light guides, optical components, etc., can solve the problems of light leakage, affect the contrast of dark details, and achieve the effect of reducing costs, facilitating thin and light design, and reducing the number of uses.
Active Publication Date: 2019-07-12
BOE TECH GRP CO LTD
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Problems solved by technology
However, as a light-transmitting display device, LCD needs a backlight to provide the brightness required for display; for most liquid crystal displays, the backlight is always on and due to the limitation of its own characteristics, there are problems such as light leakage to varying degrees; This will affect the performance of dark details and contrast issues
Method used
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[0062] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed descriptions will be omitted.
[0063] refer to figure 2 Shown is a schematic structural diagram of an embodiment of the light guide structure of the present invention; the light guide structure may include a first waveguide layer 1, a polarization beam splitting structure 3, a first polarization coupling grating 4, a second waveguide layer 5 and a second polarization coupling Grating 6 and more.
[0064] refer to image 3 A schematic diagram of the basi...
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Abstract
The present invention relates to the field of display technology, and proposes a light guide structure, which includes a first waveguide layer, a polarization beam splitting structure, a first polarization coupling grating, a second waveguide layer, and a second polarization coupling grating; the first waveguide layer It has a first light incident surface and a first light exit surface; the polarization beam splitting structure is arranged on the first light exit surface, and is used to divide the light emitted by the light source into the first polarized light and the second polarized light; the first polarization coupling grating is arranged on the first The light incident surface is used to deflect the first polarized light so that it is totally reflected in the first waveguide layer; the second waveguide layer has a second light incident surface and a second light exit surface, which are arranged on the polarization beam splitting structure; The two polarization coupling gratings are arranged between the second light incident surface and the polarization beam splitting structure, and are used for deflecting the second polarized light so that it is totally reflected in the second waveguide layer. There is no light mixing distance when using the light guiding structure, which is beneficial to the light and thin design of the light guiding structure.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a light guiding structure, a direct-type backlight module installed with the light-guiding structure, and a display panel equipped with the direct-type backlight module. Background technique [0002] With the rapid expansion of the LED liquid crystal display product market, consumers have higher and higher requirements for LED liquid crystal TVs. No matter in terms of image quality experience or appearance design, LED liquid crystal TV manufacturers are required to constantly make new breakthroughs. LED backlight modules are mainly divided into two types: edge-lit and direct-lit. The edge-lit LED backlight has the advantage of being thinner and lighter, but the image quality cannot achieve the desired effect; while the direct-lit LED backlight can take advantage of its own advantages, through the regional dynamic Control (local dimming) to optimize the picture quality, but the d...
Claims
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IPC IPC(8): G02F1/13357G02B27/28
CPCG02B27/28G02B6/0076G02B6/0021G02B6/0016G02B5/1814G02F1/13355G02B6/0023G02B6/0051G02B6/27G02B6/2773G02B27/283G02B27/4233G02B27/4272G02F1/13362G02F1/29G02F2201/305
Inventor 孟宪东王维陈小川谭纪风高健孟宪芹梁蓬霞
Owner BOE TECH GRP CO LTD