COLOR FILTER AND DISPLAY PANEL USING SAME

• US 20160091641A1
• Filed: 04/08/2015
• Published: 03/31/2016
• Est. Priority Date: 02/12/2003
• Status: Active Grant

• Current Assignee: Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Ye Xin Technology Consulting Co Ltd
• Inventors: CHENG, JUNG-AN, TSENG, SHIH-PIN
• Granted Patent: US 9,470,826 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G02B 5/201 in the form of arrays
• CPC Class Codes: G02B 5/223 containing organic substances, e.g. dyes, inks or pigments
• CPC Class Codes: H10K 50/865 comprising light absorbing layers, e.g. light-blocking layers
• CPC Class Codes: H10K 59/12 Active-matrix OLED [AMOLED] displays
• CPC Class Codes: H10K 59/38 comprising colour filters or colour changing media [CCM]
• CPC Class Codes: H10K 59/8792 comprising light absorbing layers, e.g. black layers

Abstract

A color filter of display panel for converting dual band white backlight to light with three-primary colors. The color filter includes a plurality of first filtering parts, a plurality of second filtering parts, and a plurality of quantum dot blocks. The first filtering parts have a first primary color and allow light having a first wavelength corresponding to the first primary color to pass therethrough. The second filtering parts have a second primary color and selectively allow light having a second wavelength corresponding to the second primary color to pass therethrough. The quantum dot block converting light having a wavelength smaller than a third wavelength corresponding to a third primary color to light having the second wavelength.

Claims

1. A display panel comprising:

a lighting device configured to emit dual band white backlight; and

a color filter configured to convert the dual band white backlight to light composed of three-primary colors, the color filter comprising a plurality of first filtering parts having a first primary color, a plurality of second filtering parts having a second primary color, and a plurality of quantum dot blocks, the first filtering parts configured to selectively allow light having a first wavelength corresponding to the first primary color to pass therethrough, the second filtering parts configured to selectively allow light having a second wavelength corresponding to the second primary color to pass therethrough, and the quantum dot blocks configured to convert light having a wavelength smaller than a third wavelength corresponding to a third primary color, to light having the second wavelength.

2. The display panel of claim 1, wherein the dual band light emitting from the lighting device comprise blue and green band light and yellow band light.

3. The display panel of claim 2, wherein the first primary color is green, the second primary color is blue, and the third primary color is red.

4. The display panel of claim 3, wherein the quantum dot blocks are red quantum dot blocks configured to convert a part of green light of the dual band white backlight to red light.

5. The display panel of claim 1, wherein the dual band light emitting from the lighting device comprise blue band light and red band light.

6. The display panel of claim 5, wherein the first primary color is red, the second primary color is blue, and the third primary color is green.

7. The display panel of claim 6, wherein the quantum dot blocks are green quantum dot blocks configured to convert a part of blue light of the dual band white backlight to green light.

8. A color filter of display panel for converting dual band white backlight to light with three-primary colors, comprising:

a plurality of first filtering parts having a first primary color, the first filtering parts configured to selectively allow light having a first wavelength corresponding to the first primary color to pass therethrough;

a plurality of second filtering parts having a second primary color, the second filtering parts configured to selectively allow light having a second wavelength corresponding to the second primary color to pass therethrough; and

a plurality of quantum dot blocks, the quantum dot blocks converting light having a wavelength smaller than a third wavelength corresponding to a third primary color to light having the second wavelength.

9. The color filter of claim 8, wherein the dual band light emitting from the lighting device comprise blue and green band light and yellow band light.

10. The color filter of claim 9, wherein the first primary color is green, the second primary color is blue, and the third primary color is red.

11. The color filter of claim 10, wherein the quantum dot blocks are red quantum dot blocks configured to convert a part of green light of the dual band white backlight to red light.

12. The color filter of claim 8, wherein the dual band light comprise blue band light and red band light.

13. The color filter of claim 12, wherein the first primary color is red, the second primary color is blue, and the third primary color is green.

14. The display panel of claim 13, wherein the quantum dot blocks are green quantum dot blocks configured to convert a part of blue light of the dual band white backlight to green light.