Display device

Patent metadata

Field	Value
Publication number	US-11024205-B2
Application number	US-202016779724-A
Country	US
Kind code	B2
Filing date	Feb 3, 2020
Priority date	Feb 13, 2019
Publication date	Jun 1, 2021
Grant date	Jun 1, 2021

Abstract

A display device includes a patterned panel and a light emitting module. The patterned panel includes a light-transmitting substrate, a first light-transmitting portion, a second light-transmitting portion and a third light-transmitting portion. Each of the light-transmitting portions respectively has a first transmission spectrum, a second transmission spectrum and a third transmission spectrum. The third light-transmitting portion is adjacent to the first light-transmitting portion and the second light-transmitting portion, and the third transmission spectrum has a first overlapping part with the first transmission spectrum, and has a second overlapping part with the second transmission spectrum. The light emitting module includes a first light emitting unit and a second light emitting unit, the first light emitting unit emits a first light having a peak wavelength in the first overlapping part, and the second light emitting unit emits a second light having a peak wavelength in the second overlapping part.

First claim

What is claimed is:

1. A display device, comprising:
a light emitting module including a first light emitting unit and a second light emitting unit; and
a patterned panel disposed on the light emitting module, wherein the patterned panel includes:
a light-transmitting substrate;
a first light-transmitting portion disposed on the light-transmitting substrate and having a first transmission spectrum;
a second light-transmitting portion disposed on the light-transmitting substrate, and having a second transmission spectrum; and
a third light-transmitting portion disposed on the light-transmitting substrate, and the third light-transmitting portion has a third transmission spectrum;

wherein the third light-transmitting portion is adjacent to the first light-transmitting portion and the second light-transmitting portion; the third transmission spectrum and the first transmission spectrum have a first overlapping part; the third transmission spectrum and the second transmission spectrum have a second overlapping part;
wherein the first light emitting unit emits a first light through the patterned panel, the first light has a peak wavelength in the first overlapping part, the second light emitting unit emits a second light through the patterned panel, the second light has a peak wavelength in the second overlapping part.

2. The display device according to claim 1 , wherein the third light-transmitting portion is in direct contact with the first light-transmitting portion or the second light-transmitting portion.

3. The display device according to claim 1 , wherein the third light-transmitting portion is not in direct contact with the first light-transmitting portion or the second light-transmitting portion.

4. The display device according to claim 1 , wherein the peak wavelength of the first light is not in the second transmission spectrum.

5. The display device according to claim 4 , wherein the wavelength range of the first light is not in the second transmission spectrum.

6. The display device according to claim 1 , wherein the peak wavelengths of the first light and the second light are respectively from 400 nm to 550 nm, from 500 nm to 580 nm, or from 600 nm to 660 nm.

7. The display device according to claim 1 , wherein the transmittance of the first light transmitting through the first light-transmitting portion and the third light-transmitting portion is more than 5%.

8. The display device according to claim 1 , wherein the transmittance of the second light transmitting through the second light-transmitting portion and the third light-transmitting portion is more than 5%.

9. The display device according to claim 1 , wherein the light emitting module further includes a light guide plate, and wherein the first light emitting unit and the second light emitting unit are disposed on a side of the light guide plate.

10. The display device according to claim 1 , wherein the first light emitting unit and the second light emitting unit are disposed under the first light-transmitting portion, the second light-transmitting portion, and the third light-transmitting portion.

11. The display device according to claim 1 , wherein at least one of the first light-transmitting portion, the second light-transmitting portion, and the third light-transmitting portion is in a multi-layer configuration.

12. The display device according to claim 1 , wherein the patterned panel further includes
a fourth light-transmitting portion disposed on the light-transmitting substrate, and having a fourth transmission spectrum;
wherein the fourth light-transmitting portion is adjacent to the third light-transmitting portion;
wherein the third transmission spectrum and the fourth transmission spectrum have a third overlapping part; and
wherein the light emitting module includes a third light emitting unit, the third light emitting unit emits a third light through the patterned panel, the third light has a peak wavelength in the third overlapping part.

13. The display device according to claim 12 , wherein the peak wavelength of the third light is not in the first transmission spectrum and the second transmission spectrum.

14. The display device according to claim 13 , wherein the wavelength range of the third light is not in the first transmission spectrum and the second transmission spectrum.

15. The display device according to claim 11 , wherein the transmittance of the third light transmitting through the fourth light-transmitting portion and the third light-transmitting portion is more than 5%.

16. A method of manufacturing a display device, comprising:
providing a light-transmitting substrate;
forming a first light-transmitting portion having a first transmission spectrum on a light-transmitting substrate;
forming a second light-transmitting portion having a second transmission spectrum on the light-transmitting substrate;
forming a third light-transmitting portion having a third transmission spectrum on a light-transmitting substrate;
providing a light emitting module under the light-transmitting substrate, the light emitting module includes has a first light emitting unit and a second light emitting unit;
wherein the third light-transmitting portion is adjacent to the first light-transmitting portion and the second light-transmitting portion; and the third transmission spectrum is partially overlapping with the first transmission spectrum and the second transmission spectrum respectively.

17. The method of manufacturing a display device according to claim 16 , wherein the third light-transmitting portion is in direct contact with the first light-transmitting portion.

18. The method of manufacturing a display device according to claim 16 , wherein the third light-transmitting portion is in direct contact with the second light-transmitting portion.

19. The method of manufacturing a display device according to claim 16 , wherein the peak wavelength of the first light is not in the second transmission spectrum.

20. The method of manufacturing a display device according to claim 19 , wherein the wavelength range of the first light is not in the second transmission spectrum.

Assignees

• Lite On Opto Tech Changzhou Co Ltd
• Lite On Technology Corp

Inventors

• Sun Fang-Jung
• Hsu Shih-Chang
• Wu Chao-Ming

Classifications

• G02B6/0068

  Arrangements of plural sources, e.g. multi-colour light sources · CPC title

• G09F19/205 Primary

  Special effects using different wavelengths · CPC title

• G09F13/04

  Signs, boards or panels, illuminated from behind the insignia · CPC title

• G02B5/201

  in the form of arrays · CPC title

• G09F9/33 Primary

  being semiconductor devices, e.g. diodes · CPC title