Backlight module and display device

A backlight module and light source technology, applied in optics, nonlinear optics, instruments, etc., can solve the problem of low contrast in the light output area, and achieve the effects of improving contrast, reducing illumination range, and improving uniformity

Active Publication Date: 2018-06-29
HISENSE VISUAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present application provides a backlight module and a display devic

Method used

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  • Backlight module and display device

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Embodiment Construction

[0023] In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0024] With the development of display technology, people have higher and higher requirements on the display effect of the display device. If the contrast between the light emitting areas of the backlight module in the display device is high, the display device can have better display effect. The embodiment of the present invention provides a backlight module with a high contrast ratio among the light emitting regions.

[0025] figure 1 It is a schematic structural diagram of a backlight module provided by an embodiment of the present invention. Such as figure 1 As shown, the backlight module 10 may include: a plurality of light sources 101 and quantum dot films 102, the excitation light emitted by the light sources 101 is irra...

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Abstract

The invention discloses a backlight module and a display device and belongs to the technical field of display. The backlight module comprises multiple light sources and a quantum dot diaphragm, and excitation light from the light sources excites the quantum dot diaphragm to generate excitation light; the backlight module further comprises three-dimensional reflective sheets, each three-dimensionalreflective sheet includes multiple cavities arranged in array, each cavity is formed by a bottom surface and side surfaces, and the light sources are located on the bottoms surface of the cavities; apartially transmitting and partially light reflecting optical layer is arranged between the light sources and the quantum dot diaphragm, wherein single pass transmittance m of the optical layer to the excitation light is greater than/equal to 0.05 and smaller than/equal to 0.6 when the specific value of the height H of the light sources to the length P of long sides of the cavities is grater than/equal to 0.1 and smaller than/equal to 0.25. By the arrangement, problems that color mixture existing in light emitted from light emitting areas of the backlight module and contrast among the light emitting areas is low are solved, and the contrast among the light emitting areas is increased. The backlight module and the display device are used for providing backlight.

Description

technical field [0001] The present application relates to the field of display technology, in particular to a backlight module and a display device. Background technique [0002] With the development of display technology, people have higher and higher requirements for display devices. The display device includes a backlight module, and the contrast of each light-emitting area in the backlight module is crucial to the display effect of the display device. [0003] In the related art, the backlight module includes: a substrate, and a light-emitting layer and a quantum dot film sequentially arranged on the substrate. Wherein, the light-emitting layer includes a plurality of light-emitting diodes (English: Light Emitting Diode; LED for short), and a direct-type LED backlight module is used to divide the backlight into multiple independent control units. The backlight brightness corresponding to each backlight partition is modulated in real time according to the image brightne...

Claims

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Application Information

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IPC IPC(8): G02F1/13357
CPCG02F1/1336G02F1/133605G02F1/133611G02F1/133614
Inventor 李富琳杜强
Owner HISENSE VISUAL TECH CO LTD
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