Color filter and display panel using same

Patent metadata

Field	Value
Publication number	US-10274655-B2
Application number	US-201414575617-A
Country	US
Kind code	B2
Filing date	Dec 18, 2014
Priority date	Sep 30, 2014
Publication date	Apr 30, 2019
Grant date	Apr 30, 2019

Abstract

A color filter includes a first filtering part and a number of first quantum dot particles formed in the first filtering part. A color of the first filtering part is a first primary color. The first quantum dot particles convert a light having a wavelength less than a wavelength of the first primary color to a light with the first primary color.

First claim

What is claimed is:

1. A display panel comprising:
a lighting device emitting a white light; and
a color filter layer converting the white light to light with three-primary colors;
wherein the color filter layer comprises a first filtering part, a second filtering part, and a third filtering part; a plurality of first quantum dot particles is formed in the first filtering part, a plurality of second quantum dot particles is formed in the second filtering part, and no quantum dots particle is formed in the third filtering part; the first filtering part only allows green light to pass through, the second filtering part only allows red light to pass through, the third filtering part only allows blue light to pass through;
wherein the first filtering part comprises photoresist material; the plurality of first quantum dot particles is dispersed in the photoresist material; and
wherein a density of the first quantum dot particles dispersed in the photoresist material near the lighting device is greater than a density of the first quantum dot particles dispersed in the photoresist material away from the lighting device.

2. The display panel of claim 1 , wherein the first quantum dot particles are capable of converting light having a wavelength less than a wavelength of green light to green light; the second quantum dot particles are capable of converting light having a wavelength less than a wavelength of red light to red light.

3. The display panel of claim 1 , wherein the color filter further comprises a fourth filtering part, the fourth filtering part is transparent and comprises no quantum dot particles formed therein, the fourth filtering part only allows white light to pass through.

4. The display panel of claim 1 , wherein the lighting device is an organic light emitting diode array substrate.

5. A display panel comprising:
a lighting device emitting a blue backlight; and
a color filter converting the blue backlight to light with three-primary colors;
wherein the color filter layer comprises a first filtering part, a second filtering part, and a third filtering part; a plurality of first quantum dot particles is formed in the first filtering part, a plurality of second quantum dot particles is formed in the second filtering part, and no quantum dots particle is formed in the third filtering part; the first filtering part only allows green light to pass through, the second filtering part only allows red light to pass through, the third filtering part only allows blue light to pass through;
wherein the first filtering part comprises photoresist material; the plurality of first quantum dot particles is dispersed in the photoresist material; and
wherein a density of the first quantum dot particles dispersed in the photoresist material near the lighting device is greater than a density of the first quantum dot particles dispersed in the photoresist material away from the lighting device.

6. The display panel of claim 5 , wherein the first quantum dot particles are capable of converting light having a wavelength less than a wavelength of green light to green light; the second quantum dot particles are capable of converting light having a wavelength less than a wavelength of red light to red light.

Assignees

• Hon Hai Prec Ind Co Ltd

Inventors

• Tseng Shih-Pin

Classifications

• G02B5/22 Primary

  Absorbing filters {(G02B5/201 - G02B5/208 take precedence)} · CPC title

• G02B5/201

  in the form of arrays · CPC title

• G02B5/206

  comprising particles embedded in a solid matrix · CPC title