Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Backlight module with blue light conversion reflecting film and liquid crystal display panel

A technology of backlight module and reflective film, applied in instruments, optics, optical components, etc., can solve the problems of vision damage, no protection measures, hidden eye health risks, etc., to improve visual effects, improve red quality, and reduce blue light radiation. Effect

Active Publication Date: 2020-09-18
TAIHU JINZHANG TECH CO LTD
View PDF11 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under blue light, the retina will produce free radicals, which will lead to the decline of retinal pigment epithelial cells, which will lead to the lack of nutrients in light-sensitive cells, resulting in visual damage and visual damage, and these damages are irreversible
The backlight module with ordinary reflective film has no protection measures for the blue light generated by the electronic screen or the light source, exposing the human eye to the high-energy short-wave blue light, which poses a great hidden danger to human eye health
[0005] Although there are some protective devices such as anti-blue light eyes developed for the blue light in electronic screens or light sources on the market, there may be problems such as color balance, color vision and color perception when people observe due to blue light blocking or suppression. And it can't block or suppress blue light in all directions, and it doesn't solve the damage of blue light to human eyes from the root.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Backlight module with blue light conversion reflecting film and liquid crystal display panel
  • Backlight module with blue light conversion reflecting film and liquid crystal display panel
  • Backlight module with blue light conversion reflecting film and liquid crystal display panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A blue light conversion reflective film, such as figure 1 As shown, it includes a reflective film substrate 1 with a thickness of 50 μm, and an optical conversion layer 2 with a thickness of 10 μm is fixed on the upper surface of the reflective film substrate 1 by coating.

[0030] Among them, the optical conversion layer 2 is made by mixing the optical conversion material and the transparent resin according to the weight ratio of 2:100; the optical conversion material is a rare earth fluorescent material: Eu 2+ Doped fluorescent powder, the transparent resin is epoxy resin, and its preparation is to combine Eu 2+ The doped fluorescent powder is dispersed in the epoxy resin by ultrasound, and then fixed on the surface of the reflective film substrate by coating. Eu 2+ The doped phosphor can be excited by blue light with a wavelength of about 450nm to emit orange-red light with a wavelength of about 600nm. Such as figure 2 As shown, after the white LED light source ...

Embodiment 2

[0033] A blue light conversion reflective film, such as figure 1 As shown, a reflective film substrate 1 with a thickness of 50 μm is included, and an optical conversion layer 2 with a thickness of 2 μm is fixed on the upper surface of the reflective film substrate 1 by coating.

[0034] Among them, the optical conversion layer 2 is made by mixing the optical conversion material and the transparent resin according to the weight ratio of 1.5:100; the optical conversion material is a rare earth fluorescent material: Eu 2+ The mixed material of doped fluorescent powder and xanthene derivatives, the transparent resin is acrylic resin, and its preparation is to use high-speed shearing method to combine Eu 2+ The mixture of the doped fluorescent powder and the xanthene derivative is dispersed in the acrylic resin, and then fixed on the surface of the reflective film base material by a coating method. Eu 2+ The doped phosphor can be excited by blue light with a wavelength of about ...

Embodiment 3

[0037] A blue light conversion reflective film, such as Figure 4 As shown, a reflective film substrate 1 is included, and its thickness is 60 μm. On the upper surface of the reflective film substrate 1, a layer of first optical conversion layer 2 is first fixed by coating, and its thickness is 1 μm, and then a second layer of second optical conversion layer is fixed. The optical conversion layer 3 has a thickness of 1 μm.

[0038]Among them, the optical conversion layer 2 is made by mixing the optical conversion material and the transparent resin according to the weight ratio of 5:100; the optical conversion material is the rare earth fluorescent material YAG:Ce 3+ The fluorescent powder, the transparent resin is epoxy resin, and its preparation is to disperse the rare earth fluorescent material YAG in the epoxy resin with ultrasound, and then fix it on the surface of the reflective film by coating. Phosphor YAG:Ce 3+ It can be excited by blue light with a wavelength of abo...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Wavelengthaaaaaaaaaa
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a backlight module with a blue light conversion reflecting film and a liquid crystal display panel which relate to the technical field of liquid crystal display. The module comprises a blue light conversion reflective film which comprises a reflective film base material and an optical conversion layer which is fixed on the surface of one side of the reflective film base material and can convert blue light with the wavelength of 380-500nm into red light. In the backlight module and the liquid crystal display panel, all the components contain blue light conversion reflective films. High-energy blue light in light which is emitted by a backlight source and exposed out of the bottom face of a light guide plate can be converted into red light. The problem that the backlight module with the reflecting film has no protection measures for blue light generated in the light emitting process of an electronic screen or a light source, human eyes are exposed to high-energy short-wave blue light, and great hidden danger is caused to human eye health is fundamentally solved.

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 panel containing a blue light conversion reflection film. Background technique [0002] The backlight module is one of the key components of the LCD panel. Its function is to supply sufficient brightness and evenly distributed light source so that it can display images normally. The backlight module mainly includes a light source, a light guide plate, and an optical film, and the optical film mainly includes three types: a reflective film, a diffusion film, and a brightness enhancement film. [0003] The main function of the reflective film is to increase the reflectivity of the optical surface, reflect the light leaking out of the light guide plate efficiently and without loss, thereby reducing light loss, reducing power consumption, and improving the light saturation of the liquid crystal display surface. At presen...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G02F1/13357G02B5/08G02B1/10
CPCG02F1/133605G02B5/0808G02B1/10Y02B20/00
Inventor 谷至华施克炜陈晓东杨明
Owner TAIHU JINZHANG TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com