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Color filter, preparation method, display panel and display device

A color filter and display panel technology, applied in the fields of filters, copy/marking methods, optics, etc., can solve problems such as affecting the stability of quantum dot film formation, affecting the spread of quantum dot ink, and pixel photoresist residues, etc. , to achieve the effect of improving display effect, reducing thickness and improving stability

Active Publication Date: 2020-02-07
BOE TECH GRP CO LTD
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AI Technical Summary

Problems solved by technology

In the preparation process of the high-thickness pixel defining layer, due to the thickness being too thick, there will be insufficient exposure and photoresist residue in the pixel, which will affect the spreading of the quantum dot ink and ultimately affect the stability of the quantum dot film formation

Method used

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  • Color filter, preparation method, display panel and display device
  • Color filter, preparation method, display panel and display device
  • Color filter, preparation method, display panel and display device

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Embodiment Construction

[0042] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by those skilled in the art to which the present invention belongs. "First", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Comprising" or "comprising" and similar words mean that the elements or items appearing before the word include the elements or items listed after the word and their equivalents, without excluding other elements or items. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0043] It should be noted that the size and shape of each figure in the drawings do not reflect the actual scale, but are only intended to schematically illustrate the content of the present invention. And the same or...

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Abstract

The invention provides a color filter, a preparation method, a display panel and a display device. The method comprises the following steps: forming a hydrophobic material layer on a substrate; forming first quantum dot layers of quantum dots arranged at intervals on the hydrophobic material layer; filling a pixel defining layer among the quantum dots; forming an opening area of the pixel defininglayer; filling a second quantum dot layer into the opening area, and forming the second quantum dot layer on the first quantum dot layers, wherein the first quantum dot layer and the second quantum dot layer of the same quantum dot jointly form a color resistor of the color filter. The stability of the color filter is improved, and the display effect is further improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a color filter and a preparation method, a display panel and a display device. Background technique [0002] Quantum Dot (QD), also known as nanocrystal, is a nanoparticle composed of II-VI or III-V elements (including zinc, cadmium, selenium and sulfur atoms). The particle size of quantum dots is generally between 1-20nm. Since electrons and holes are quantum-confined, the quantum confinement effect is particularly significant. The continuous energy band structure becomes a discrete energy-level structure with molecular characteristics. Fluorescence can be emitted, so the reflection peak of quantum dot particles is extremely narrow after being excited, and the spectral purity is high. The emission spectrum of quantum dots can be controlled by changing the quantum particle size and chemical composition, so that its reflection spectrum covers the entire visible region. Taking C...

Claims

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Application Information

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IPC IPC(8): G02B5/20B41M5/00G02F1/1335
CPCG02B5/20B41M5/0047G02F1/133514
Inventor 侯文军
Owner BOE TECH GRP CO LTD
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