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Dimming film, backlight module, display panel and display device

A backlight module and display panel technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of immature technology and high cost, and achieve low-cost effects

Pending Publication Date: 2022-04-15
BOE TECH GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, at present, the cost of realizing the local dimming function of the traditional backlight is high and the technology itself is not mature, so a component capable of local dimming is required for the Local Dimming technology.

Method used

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  • Dimming film, backlight module, display panel and display device
  • Dimming film, backlight module, display panel and display device
  • Dimming film, backlight module, display panel and display device

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Embodiment Construction

[0029] In order to make the purpose, technical solutions and advantages of this specification more clear, the following will further describe this specification in detail in combination with specific embodiments and with reference to the accompanying drawings.

[0030] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application shall have the usual meanings understood by those skilled in the art to which the present application belongs. "First", "second" and similar words used in the embodiments of the present application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Comprising" or "comprising" and similar words mean that the elements, objects or method steps appearing before the word cover the elements, objects or method steps listed after the word and their equivalents, without excluding other elements, objects or method steps. Method...

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Abstract

The invention provides a dimming film, a backlight module, a display panel and a display device. The dimming film comprises a first surface, a second surface and a packaging cavity arranged between the first surface and the second surface, and a plurality of reflective particles are borne in the packaging cavity; the second surface is configured to apply voltage to the packaging cavity, so that the reflective particles in the packaging cavity move relatively, and the packaging cavity can adjust the light transmittance of the light in the packaging cavity according to the movement of the reflective particles. According to the application, the voltage is applied to the packaging cavity through the second surface of the dimming film, so that the reflective particles in the packaging cavity can adjust the distance between the reflective particles according to different voltage differences, the distance between the reflective particles is small when the voltage is large, and light is difficult to pass through; when the voltage is small, the distance between the reflective particles is large, and light rays can pass through easily. Therefore, the transmittance of the light passing through the packaging cavity can be adjusted, and possibility is provided for realizing local dimming with a low-cost scheme.

Description

technical field [0001] The present application relates to the field of display technology, in particular to a light-adjustable film, a backlight module, a display panel and a display device. Background technique [0002] High Dynamic Range (HDR) images, compared with ordinary images, can provide more dynamic range and image details, and better reflect the visual effects of people in the real environment. Therefore, the current display technology is getting more and more The more it develops towards high resolution, HDR, etc. In order to achieve a high dynamic contrast ratio and achieve the purpose of enriching image layers, a local backlight adjustment technology (ie, Local Dimming technology) is proposed for HDR liquid crystal displays (Liquid Crystal Display, LCD). [0003] However, at present, the cost of realizing the local dimming function of the traditional backlight source is high and the technology itself is not mature, so a component capable of local dimming is req...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357
Inventor 尹清平赵淑敏张静刘婷婷李宗天彭帅李强
Owner BOE TECH GRP CO LTD
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