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Method for realizing color display by using color conversion principle

A color display and color conversion technology, which is applied to static indicators, cathode ray tube indicators, and photo-engraving processes of patterned surfaces, etc., can solve the problems of high energy conversion efficiency, low light utilization rate, and large light loss, etc. Achieve the effect of low utilization rate, simple process and large loss

Inactive Publication Date: 2011-04-20
INESA ELECTRON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problem of color cast caused by different attenuation degrees in the existing technology of directly depositing red, green and blue primary colors, or the problem of large light loss and low light utilization rate in the white light + color filter technology, and proposes a The method of using the color conversion principle to realize color display uses blue light to excite CCM (Color Change Materials) materials (belonging to photoluminescent fluorescent materials), so as to realize the color display of the three primary colors of red, green and blue, because the base light is also a blue light source , to avoid the problem of different attenuation degrees of the three primary colors, and this photo-induced conversion principle has a small light loss, compared with color filter technology, the energy conversion efficiency is higher, and the manufacturing process is simple

Method used

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  • Method for realizing color display by using color conversion principle
  • Method for realizing color display by using color conversion principle
  • Method for realizing color display by using color conversion principle

Examples

Experimental program
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Effect test

Embodiment 1

[0026] First, prepare a photocurable (or photosensitive) CCM slurry. In this example, the light conversion material is an organic fluorescent slurry, which is composed of a prepolymer, an active monomer, an organic fluorescent pigment, a photoinitiator, a dispersant, and a dispersant. Foaming agent, leveling agent, adhesion promoter, etc. The main component for light conversion is an organic fluorescent pigment, which is a microsphere coated with a thermosetting resin outside an organic fluorescent dye, and its average particle size is required to be below 10 μm. Mix these additives and light-converting pigments in different proportions, and then use a dispersing device to stir and disperse them evenly to obtain red and green organic fluorescent coatings. In this way, the preparation of red and green conversion pastes is completed. Note that the red conversion paste corresponds to the use of red light conversion pigments, and the green conversion paste corresponds to the use o...

Embodiment 2

[0029] Production of inorganic EL 2-inch (128x64 pixels) blue matrix screen, the main component of the light-emitting layer of the inorganic EL blue screen is BaAl 2 S 4 :Eu, first prepare a piece of substrate glass coated with ITO, then photoetch the ITO into a column electrode pattern, and then make the lower dielectric layer, light-emitting layer, upper dielectric layer, upper electrode, etc. in sequence, and the device structure is glass / ITO / Ta 2 o 5 / ZnS / BaAl 2 S 4 :Eu / HfO2 / Ta 2 o 5 / Al, etc. After the inorganic EL blue display is produced, the photosensitive red conversion paste is coated on the blue light-emitting substrate by spin coating, and then the red light pattern is formed by exposure and development, and then the same method is used to The green conversion paste is also made on the blue light-emitting substrate to form a green light pattern. The finished red and green conversion films are as follows: Figure 7 As shown, 10 is a glass substrate, 11 is a...

Embodiment 3

[0031] Prepare the photosensitive CCM conversion paste for screen printing, and print the red conversion paste onto the transparent glass substrate with a black matrix as described in Example 1, and then preheat it in an oven at 100°C for 15 Minutes, then exposure, development and forming, the developer is an organic developer without water, and finally the formed color conversion film is cured by heating at 120°C for 30 minutes. The production method of the green conversion film is the same as that of the red conversion film. Then use the blue LED background light source to test the conversion efficiency, color purity and other parameters of the prepared transparent glass with the color conversion film. The results are the same as those measured in Example 1, and obtain ideal conversion efficiency and color purity.

[0032] By changing the thickness of the color conversion film, the influence of different film thicknesses on the conversion efficiency is analyzed. When the film...

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Abstract

The invention relates to a method for realizing color display by using a color conversion principle. A fluorescent paint is coated on a substrate with background blue light; a fluorescent pigment in the fluorescent paint is excited by the blue light to emit red light or green light; and the red light, the green light and the background blue light construct three-primary-color technology for realizing the color display. The color conversion method solves the problems of different life and attenuation degree and the like existing in the three-primary-color technology for directly emitting light, also solves the problems of high light loss, low utilization rate and the like existing in a white light filtering method, and is one of ideal methods for realizing the color display.

Description

technical field [0001] The invention relates to a display color display method, in particular to a method for realizing color display by utilizing the color conversion principle. Background technique [0002] We all know that the popular displays on the market have various ways to achieve color. For example, traditional CRT displays use electron bombardment of colored phosphors to emit red, green and blue light to achieve color. The liquid crystal display, which currently dominates the flat-panel display market, uses color filters (CF) to pass the white light emitted by cold cathode fluorescent tube (CCFL) backlights or LED backlights through red, green, and blue color filters. The three primary colors are filtered out to achieve color. And the electroluminescent display, because it belongs to the active light-emitting type, so its method of realizing color is not limited to the use of color filter film technology, but also can realize color by directly depositing three kin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09G5/02G03F7/00
Inventor 刘红君陈晨曦
Owner INESA ELECTRON