Backlight module, display screen and display device
A backlight module, non-display technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of reduced green light purity, low color gamut of liquid crystal displays, and reduced display effects, so as to improve display effects and improve color. domain effect
Active Publication Date: 2022-05-24
BOE TECH GRP CO LTD +1
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Problems solved by technology
For example, when the light emitted by the ordinary backlight passes through the green color resistance, the green light is emitted through the color resistance, and the light of other colors except green light is absorbed to cause waste, but the red light, orange light, yellow light, etc. cannot be completely absorbed. Absorption, unabsorbed other color light and green light together form a display screen, reducing the purity of green light, which will cause the color gamut of the LCD screen to be low, thereby reducing the display effect and affecting the visual experience
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[0030] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not intended to represent all embodiments consistent with the present invention. Rather, they are merely examples of means consistent with some aspects of the invention as recited in the appended claims.
[0031] The terms used in the present invention are for the purpose of describing particular embodiments only and are not intended to limit the present invention. Unless otherwise defined, technical or scientific terms used in the present invention should have the ordinary meaning as understood by one of ordinary skill in the art to which the present invention belongs. The terms "first", "second" and similar terms used i...
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Abstract
The invention provides a backlight module, a display screen and a display device. The backlight module includes a reflective sheet, a directional scattering layer arranged on the reflective sheet, and a light guide plate arranged on the directional scattering layer; the backlight The module also includes a quantum dot film layer disposed above the reflection sheet, the directional scattering layer is configured to scatter at least part of the non-display light emitted from the light guide plate to the quantum dot film layer, and the quantum dot The film layer is excited by the non-display light to generate display light. By converting the non-display light into display light, it is beneficial to increase the color gamut of the display screen, thereby improving the display effect.
Description
technical field [0001] The invention relates to the field of display, in particular to a backlight module, a display screen and a display device. Background technique [0002] The liquid crystal display is a flat ultra-thin display device that has developed rapidly in recent years. Its radiation is low, which is beneficial to human health, the picture is soft, the eyes are not easy to fatigue, and it brings people a good visual experience. The liquid crystal display is composed of a backlight module and a display panel. The light emitted by the backlight module passes through the bottom reflective layer, the light guide plate, the lower prism layer, the upper prism layer, and the protective layer, and then enters the plane where the liquid crystal panel is located, and the emitted light passes through the display panel. Then display the desired image. [0003] The color filter layer of the display panel only transmits light of the same color as the color resist, and absorbs...
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IPC IPC(8): G02F1/13357G02B1/11
CPCG02F1/133615G02B1/11G02F1/133614
Inventor 王姗姗叶子蔚郭坤程石杨志刘信盛子沫高翔宇李彦辉
Owner BOE TECH GRP CO LTD