Direct type backlight module, display and terminal equipment
A backlight module, direct type technology, applied in instruments, optics, nonlinear optics, etc., can solve the problems of rising manufacturing costs and reducing thickness, and achieve the effect of reducing overall thickness, reducing manufacturing costs, and improving display quality
Pending Publication Date: 2021-12-24
HUAWEI TECH CO LTD
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Problems solved by technology
[0003] The purpose of the embodiments of the present application is to provide a direct-type backlight module, which aims to solve the technical problem of the reduction in the thickness of the direct-type backlight module in the prior art accompanied by the increase in its manufacturing cost
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[0045] For the convenience of understanding, the technical terms involved in this application are firstly explained and described below.
[0046] Reflection: An optical phenomenon. It refers to the phenomenon that when light propagates from the first medium to the second medium, it changes the direction of propagation at the interface between the first medium and the second medium and then returns to the first medium.
[0047]Refraction: A phenomenon in which the direction of light changes when it passes obliquely from one medium to another.
[0048] Refractive index: The ratio of the speed of light in a vacuum to the speed of light in the medium is called the refractive index of the medium. The higher the refractive index of a material, the greater its ability to refract incident light.
[0049] Reflectivity: The percentage of the radiant energy reflected by the object to the total radiant energy directed at the object is called the reflectivity.
[0050] PMMA: (Polymethyl...
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Abstract
The invention belongs to the technical field of display equipment, and particularly relates to a direct type backlight module, a display and terminal equipment. The direct type backlight module comprises a PCB, a plurality of light sources, a light coupling plate and a reflecting layer. The reflecting layer is arranged on the PCB, all the light sources are arranged on the PCB, the light coupling plate is a transparent resin plate and is arranged at the position, away from all the light sources by a preset distance, above the light sources. Grooves are formed in the positions, corresponding to the light sources, of the light coupling plate, reflectors are contained in the grooves, so that reflecting surfaces used for reflecting at least part of light rays emitted by the corresponding light sources to the reflecting layer are formed on the groove walls of the grooves, and the light rays emitted by the light sources are emitted out from the upper portion after being sequentially reflected by the reflecting surfaces and the reflecting layer. Therefore, the number of the light sources can be reduced, the light emitting uniformity of the light coupling plate can be improved, and further, by reasonably arranging the structure of the light coupling plate, the number of the light sources can be reduced while the thickness of the direct type backlight module is reduced, and the manufacturing cost of the direct type backlight module is well controlled.
Description
technical field [0001] The application belongs to the technical field of display devices, and in particular relates to a direct-lit backlight module, a display and a terminal device. Background technique [0002] As the key module of the liquid crystal display, the backlight module usually arranges a plurality of light sources on the PCB, and provides illumination to the display module of the liquid crystal display through the light sources. In the prior art, in order to reduce the thickness of the liquid crystal display, the thickness of the backlight module is usually reduced, and when the thickness of the backlight module is reduced, the uniformity of light emission will be reduced, so the number of light sources in the backlight module needs to be increased. However, increasing the number of light sources will increase the manufacturing cost of the backlight module. Contents of the invention [0003] The purpose of the embodiments of the present application is to prov...
Claims
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IPC IPC(8): G02F1/13357
CPCG02F1/133605G02F1/133606G02F1/133603
Inventor 熊充余俊逸黄家伟郭林浩
Owner HUAWEI TECH CO LTD