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Liquid crystal display device

A technology of liquid crystal display device and liquid crystal layer, applied in nonlinear optics, instruments, optics, etc., can solve the problems of large light output angle of backlight module and pixel crosstalk of quantum dot panel, etc.

Inactive Publication Date: 2018-03-02
HISENSE VISUAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a liquid crystal display device, which can solve the problem of quantum dot panel pixel crosstalk caused by the large light emitting angle of the backlight module in the above-mentioned related art

Method used

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  • Liquid crystal display device
  • Liquid crystal display device
  • Liquid crystal display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 1 As shown, the liquid crystal display includes a backlight module 10 and a liquid crystal panel 20 . The liquid crystal panel 20 includes a liquid crystal layer 21 and a quantum dot color conversion layer 22. The liquid crystal layer 21 includes a plurality of liquid crystal units 211 arranged in sequence, and the quantum dot conversion layer 22 includes a red quantum dot unit 221 and a green quantum dot unit arranged in sequence. 222 and blue quantum dot unit 223, wherein each quantum dot unit is set corresponding to one liquid crystal unit 211.

[0041] Optionally, the blue quantum dot unit 223 is not provided with quantum dot material, and the blue backlight is directly transmitted; the green quantum dot unit 222 is provided with green quantum dot material, and the red quantum dot unit 221 is provided with red quantum dot material. The backlight module 110 adopts a blue backlight, and the blue light is irradiated on the red, green and blue quantum do...

Embodiment 2

[0088] image 3 It is a structural schematic diagram of the backlight module of Embodiment 2 of the present invention, such as image 3 As shown, the present invention provides a photometric backlight module 40, including 400 as a backboard for supporting and fixing the entire backlight module and heat dissipation, 410 as an LED light source emitting blue light in the range of 440nm to 470nm, and 420 as a guide Light plate, 430 is a prism film, 440 is an angle selection sheet according to the present invention, the LED light source 410 is located on the lower side of the light guide plate 420, and the prism film 430 is placed on the light guide plate 420 and the angle selection plate. Between the pieces 440, the angle selection piece 440 is located at the outermost side of the backlight module.

[0089] Optionally, a reflective polarizing film is provided on the light exit side of the angle selection sheet to ensure that the light emitted by the backlight is polarized light. ...

Embodiment 3

[0091] The present application also provides a liquid crystal display device. It includes a display panel and any one of the above backlight modules, wherein the backlight module and the liquid crystal panel are in a relative position, and the display panel is located on the upper surface of the backlight module; the structure, function and role of the backlight module have been described in detail in the foregoing embodiments description, which will not be repeated here.

[0092] see Figure 4, is a schematic structural diagram of a liquid crystal display device provided in Embodiment 1 of the present application. Wherein, the liquid crystal panel 70 includes a liquid crystal layer 71 and a quantum dot color conversion layer 72, and the liquid crystal layer 71 is arranged between the backlight module 60 and the quantum dot color conversion layer 72; wherein, the liquid crystal layer 71 includes a plurality of liquid crystal units arranged in sequence 711, the quantum dot co...

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Abstract

The invention discloses a backlight module, and belongs to the technical field of liquid crystal display. The backlight module comprises LED light sources and an angle selection sheet, wherein the angle selection sheet is located on the light-out side of the LED light sources; the angle selection sheet comprises multiple diaphragms which are arranged in a stacked mode; the thicknesses and the refractive indexes of the diaphragms are designed according to the relationships of the optical path difference and the wavelengths of the light sources, wherein the optical path difference of light at afirst angle is a half-integer multiple of the wavelength of the corresponding light source, and the optical path difference of light at a second angle is an integer multiple of the wavelength of the corresponding light source; in the light emitted by the backlight sources, the light at the first angle is diverged outwards through the angle selection sheet, and the light at the second angle is reflected and then passes through the angle selection sheet again until the light is at the first angle. According to the backlight module, by designing the angle selection sheet, the light emitted by thebacklight sources is transferred into small-angle backlight at the preset angle, and the small-angle backlight can completely enter corresponding quantum dot units, so that the light-out collimationdegree is improved, and crosstalk among pixels of a quantum-dot liquid crystal panel is prevented.

Description

technical field [0001] The invention relates to the technical field of liquid crystal display, in particular to a backlight module and a liquid crystal display device. Background technique [0002] A liquid crystal display device is composed of a liquid crystal panel, a mechanism frame, optical components and a circuit board. Since the liquid crystal itself does not emit light, some backlight sources need to be configured to display the picture. The backlight module is used to provide a backlight with uniform brightness and distribution for the liquid crystal display device, so that the liquid crystal display device can display images normally. [0003] In the existing backlight module technology, the backlight module usually adopts quantum dot technology to realize high color gamut display. The liquid crystal panel is mainly composed of a liquid crystal layer and a quantum dot color conversion layer, and the quantum dot conversion layer is composed of a plurality of three...

Claims

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Application Information

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IPC IPC(8): G02F1/13357
CPCG02F1/1336G02F1/133614
Inventor 李富琳宋志成刘卫东
Owner HISENSE VISUAL TECH CO LTD
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