Backlight module and display device
A technology of backlight module and light guide plate, which is applied in the direction of light guide, optics, optical components, etc., can solve the problems of uneven brightness and darkness of display devices, weakening of light beam blocking effect, etc., to improve display effect, reduce firefly phenomenon, and improve shading performance effect
Active Publication Date: 2022-03-11
XIAMEN TIANMA MICRO ELECTRONICS
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Problems solved by technology
[0004] However, since the backlight module is usually bonded to the display panel through the light-shielding tape, the light-shielding tape will be bonded to the above-mentioned diffusion black stripes at the same time. When the light-shielding tape is pulled due to external force, the diffusion black stripes will also be pulled. The deformation will weaken the effect of the diffused black stripes on the light beam of the backlight light source, which may lead to the phenomenon of fireflies with uneven brightness and darkness in the position of the backlight light source on the display device.
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[0032] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangements of components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
[0033] The following description of at least one exemplary embodiment is merely illustrative in nature and in no way taken as limiting the invention, its application or uses.
[0034] Techniques, methods and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such techniques, methods and devices should be considered part of the description.
[0035] In all examples shown and discussed herein, any specific values should be construed as exemplary only, and not as limitations. Therefore, other instances of the exemplary embodiment may have dif...
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Abstract
The invention discloses a backlight module and a display device, which relate to the field of display technology and include: a back frame; a light guide plate including a light incident surface intersecting with the light exit surface of the backlight module; an LED light source located in the frame area and Located on one side of the light incident surface of the light guide plate, the LED light source includes a plurality of LEDs; the diffuser is located on the side away from the base of the light guide plate and LEDs, and the orthographic projection of the diffuser on the plane of the base covers the positive projection of the light guide plate on the plane of the base. projection, and overlap with the orthographic projection of each LED on the plane where the substrate is located; the diffusion black strip is located in the frame area, and is located on the side of the diffusion sheet away from the substrate; the deformation barrier is located in the frame area, and is located on the side of the diffusion black strip away from the substrate One side, and there is no bonding between the deformation barrier layer and the diffusion black strip; the light-shielding tape is located in the frame area, and is located on the side of the deformation barrier layer away from the base, and the light-shielding tape is at least bonded to the deformation barrier layer. This helps to improve the phenomenon of fireflies caused by light leakage in front of the lamp.
Description
technical field [0001] The present invention relates to the field of display technology, and more specifically, to a backlight module and a display device. Background technique [0002] Liquid crystal display is a flat and ultra-thin display device, which consists of a certain number of color or black and white pixels, placed in front of the light source or reflective surface. Liquid crystal displays consume very little power, making them favored by engineers for electronic devices that run on batteries. Its main principle is to stimulate liquid crystal molecules with current to generate points, lines, and surfaces to form a picture with the back lamp tube. [0003] The display panel in the liquid crystal display cannot emit light, and the light source provided by the backlight module is needed to realize the display function. The backlight module usually includes a side-type backlight module and a direct-type backlight module. In the direct-type backlight module, the back...
Claims
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IPC IPC(8): G02F1/13357G02F1/1335G02B6/00
CPCG02F1/133603G02F1/133606G02F1/133512G02B6/0073G02B6/0051G02F1/133607
Inventor 陈星
Owner XIAMEN TIANMA MICRO ELECTRONICS