Color film base plate, preparation method thereof, display panel and display device

A color filter substrate and substrate substrate technology, which is applied in nonlinear optics, instruments, optics, etc., can solve the problems of complex preparation process, and achieve the effect of simplifying the preparation process

Active Publication Date: 2018-11-06
BOE TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of color film substrate needs to print three-color quant

Method used

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  • Color film base plate, preparation method thereof, display panel and display device
  • Color film base plate, preparation method thereof, display panel and display device
  • Color film base plate, preparation method thereof, display panel and display device

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preparation example Construction

[0041] The preparation method of the europium complex is preferably:

[0042] Ligand and EuCl 3 Reaction in ethanol, the pH value condition is 7-8, and europium complex is obtained.

[0043] In the present invention, the green light quantum dots are preferably CdSe / CdS, CdSe / ZnS, LnP or CsPbBr x I 3-x type perovskite quantum dots, where 2≤x≤3.

[0044] The surface of the green light quantum dot is usually connected with a first complex different from the europium complex, and the first complex is oleic acid-oleylamine or alkylphosphine oxide. When the europium complex replaces part or all of the first complex by means of replacement and binds to the green light quantum shell, a quantum dot capable of simultaneously emitting narrow-band red light and green light under blue light excitation is obtained. The green light quantum dot has high energy, which can excite the europium complex to emit red light better.

[0045] Preferably, the ratio of the amount of the europium com...

Embodiment 1

[0069] 1) Preparation of europium complexes

[0070] The ligand shown in formula (II), with 1 / 3 equivalent of EuCl 3 ·6H 2 O was refluxed in ethanol, a small amount of NaOH was added to adjust the pH to about 8, and the europium complex represented by formula (V) was obtained by centrifugal separation.

[0071] 2) Replacement of rare earth ligands

[0072] Dissolve the CdSe / CdS quantum dots with oleic acid-oleylamine complex on the surface in the methanol-chloroform system to make a solution of about 10 mg / mL, slowly add the europium complex represented by formula (V) to a concentration of 5 mg / mL Methanol solution with continuous stirring, and finally get quantum dots replaced by rare earth complex ligands, such as Figure 5 shown.

[0073] 3) Preparation of color filter substrate

[0074] A black matrix is ​​formed on a transparent glass substrate through a patterning process, the black matrix defines a plurality of pixel areas, and the plurality of pixel areas include ...

Embodiment 2

[0081] 1) Preparation of europium complexes

[0082] The ligand shown in formula (II), with 1 / 3 equivalent of EuCl 3 ·6H 2 O was refluxed in ethanol, a small amount of NaOH was added to adjust the pH to about 8, and the europium complex represented by formula (V) was obtained by centrifugal separation.

[0083] 2) Replacement of rare earth ligands

[0084] Dissolve the CdSe / CdS quantum dots with oleic acid-oleylamine complex on the surface in the methanol-chloroform system to make a solution of about 10 mg / mL, slowly add the europium complex represented by formula (V) to a concentration of 5 mg / mL Methanol solution with continuous stirring, and finally get quantum dots replaced by rare earth complex ligands, such as Figure 5 shown.

[0085] 3) Preparation of color filter substrate

[0086] A black matrix is ​​formed on a transparent glass substrate through a patterning process, the black matrix defines a plurality of pixel areas, and the plurality of pixel areas include ...

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Abstract

The invention relates to the field of display, in particular to a color film base plate, a preparation method thereof, a display panel and a display device. The color film base plate comprises a substrate base plate and a black matrix, multiple subpixels are limited out by the black matrix and include red subpixels, green subpixels and blue subpixels, each red subpixel comprises a first light filtering layer arranged on the substrate base plate and used for filtering away green light and a quantum spot layer arranged on the first light filtering layer, each green subpixel comprises a second light filtering layer arranged on the substrate base plate and used for filtering away red light and a quantum dot layer arranged on the second light filtering layer, each blue subpixel is not providedwith a quantum dot layer and is used for transmitting blue light, and each quantum dot layer only comprises one kind of quantum dots which transmit red light and green light under excitation of the blue light. The color film base plate realizes three-color display under excitation of a blue backlight source; each quantum dot layer only comprises one kind of quantum dots, so that process is simplified.

Description

technical field [0001] The invention relates to the display field, in particular to a color filter substrate, a preparation method thereof, a display panel and a display device. Background technique [0002] With the development of display technology, people have higher and higher requirements on the picture quality (eg, color gamut) of the display device. A common display device needs a color filter substrate to realize full-color display. For example, a liquid crystal display device may include an array substrate, a color filter substrate, liquid crystals filled between the array substrate and the color filter substrate, and a backlight source. [0003] Among them, the color filter substrate may include a base substrate, on which a plurality of sub-pixels are defined by a black matrix. In the existing color filter substrate using quantum dots, the sub-pixels are divided into red sub-pixels according to the quantum dots coated. pixel, blue subpixel, and green subpixel. C...

Claims

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Application Information

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IPC IPC(8): G02F1/1335
CPCG02F1/133512G02F1/133514G02F1/133516G02F1/133614
Inventor 禹钢陈右儒于晶
Owner BOE TECH GRP CO LTD
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