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Color gamut augmenting composite optical material and preparation method and application thereof

An optical material and wide color gamut technology, applied in the field of composite optical materials, can solve problems such as increased loss, and achieve the effects of improving utilization, improving light conversion efficiency, and increasing optical distance

Inactive Publication Date: 2016-10-12
WUHAN BAOLI LIANGCAI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The color temperature of existing display terminals is generally around 6000-8000K. However, the inventors of the present application have found that high color temperature does not necessarily mean high performance. As far as the human body's visual sense is concerned, appropriately lowering the color temperature will often bring better performance. For a softer and more natural display effect, the usual way to reduce the color temperature is to increase the content of phosphor powder, but this method often also increases the loss

Method used

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  • Color gamut augmenting composite optical material and preparation method and application thereof
  • Color gamut augmenting composite optical material and preparation method and application thereof
  • Color gamut augmenting composite optical material and preparation method and application thereof

Examples

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Embodiment 1

[0061] Figure 4 A schematic structural view of the composite optical material according to Example 1 of the present invention is shown. As shown in the figure, the composite optical material in this embodiment includes a transparent matrix 401 , a number of light wavelength conversion materials 402 discretely (preferably uniformly) distributed in the matrix, and scattering particles 403 discretely distributed in the transparent matrix 401 . The scattering particles 403 are used to scatter the incident light in the matrix and increase the optical path of the light passing through the composite optical material. The composite optical material of the invention can convert the non-red, green, and blue primary color light into red, green, and blue primary color light. Then increase the area of ​​the color gamut triangle that the display can display, such as figure 1 shown. It should be noted, Figure 4 In order to more clearly illustrate the relationship between the various co...

Embodiment 2

[0075] In this embodiment, a display terminal is provided, which includes a light source and a display screen, and the thin film of the composite optical material in Embodiment 1 is arranged between the light source and the display screen. Those skilled in the art should understand that the display terminal also has other auxiliary devices such as a control panel and a processor. Since these auxiliary devices are all existing components, they will not be repeated here.

[0076] See attached Figure 7 , which shows the use of thin films of composite optical materials. A composite optical material film 702 whose area size is consistent with that of the white planar light source 701 is laid on the light path from the light source to the outside of the screen in the color display, and the white light spectrum emitted by the white planar light source is modulated by the composite optical material film, wherein The light of the non-red, green and blue primary colors, specifically t...

Embodiment 3

[0080] The basic structure of the composite optical material in this embodiment is similar to that of Embodiment 1, including a transparent matrix, a light wavelength conversion material and scattering particles. The difference from Example 1 is that the composite optical material of this example uses rare earth ion-doped up-conversion crystal powder as the optical wavelength conversion material. This rare-earth ion-doped upconversion crystal can be a hexagonal NaY (1-x-y) f 4 :Er x ,Yb y , with a grain size of 0.5 to 50 microns, preferably 1 to 10 microns. The addition amount of the up-conversion crystal powder is 0.01% to 10% of the total mass of the composite material. Preferably it is 0.1% to 1%. The grain can absorb the red non-primary color light of 650-670 nanometers, and convert the photons of this wavelength band into the green primary color light of 520-560 nanometers.

[0081] After converting the non-red, green, and blue primary color light in the 650-670nm b...

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Abstract

The invention discloses a composite optical material for expanding color gamut, a preparation method and application thereof. The composite optical material of the present invention includes a transparent matrix and a light wavelength conversion material discretely distributed in the transparent matrix. Preferably, a number of scattering particles are also discretely arranged in the composite optical material. The composite optical material of the present invention is capable of absorbing light within a predetermined wavelength range and at least partially converting the absorbed light into light within another wavelength range. When the composite optical material of the present invention is used in a color display, the color gamut can be extended to 120% or more of that before use, and at the same time, the brightness of the light source is hardly affected, thereby maintaining a high light efficiency.

Description

technical field [0001] The invention relates to the field of materials, in particular to a composite optical material used for modulating light source spectrum and expanding display color gamut in the display field. Background technique [0002] Since the late 1990s, color displays have become increasingly widespread and important in everyday life, including televisions, desktop computers, laptops, tablets, mobile phones, and more. By around 2010, smartphones with color displays had taken up a lot of time in people's lives. People's food, housing, transportation, work, and communication between people have all relied heavily on obtaining information from color displays through vision. And all kinds of displays are one of the important tools for people's entertainment. It is foreseeable that in the near future, the total demand for displays will continue to increase. [0003] The display visual effect of the display is mainly determined by the time resolution, spatial reso...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/00G02F1/01
CPCG02F1/0009G02F1/01
Inventor 明天肖蔓达董和徐荣
Owner WUHAN BAOLI LIANGCAI TECH CO LTD
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