DISPLAY DEVICE AND FABRICATING METHOD THEREOF

• US 20150309222A1
• Filed: 12/23/2014
• Published: 10/29/2015
• Est. Priority Date: 04/25/2014
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: WOO, Joungwon
• Granted Patent: US 10,353,122 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: F21K 9/64 using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
• CPC Class Codes: G02B 5/0278 used in transmission
• 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

Abstract

A display device includes a light source to generate a beam of a first color. The display device also includes a display panel having at least one pixel including a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel, wherein the second color sub-pixel is configured to generate a beam of the second color by reacting with the beam of the first color, the third color sub-pixel is configured to generate a beam of the third color by reacting with the beam of the first color, and the first color sub-pixel is configured to allow the beam of the first color to pass therethrough. The display device further includes a beam path converter disposed between the light source and the display panel to direct the beam of the first color from the light source toward the display panel.

Claims

1. A display device comprising:

a light source to generate a beam of a first color;

a display panel having at least one pixel including a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel, wherein the second color sub-pixel is configured to generate a beam of the second color by reacting with the beam of the first color, the third color sub-pixel is configured to generate a beam of the third color by reacting with the beam of the first color, and the first color sub-pixel is configured to allow the beam of the first color to pass therethrough; and

a beam path converter disposed between the light source and the display panel to direct the beam of the first color from the light source toward the display panel.

2. The display device of claim 1, wherein the display panel lacks at least two of a signal line, a switching element, a driving element and a driving circuit.

3. The display device of claim 1, wherein at least one of the first color sub-pixel, the second color sub-pixel, and the third color sub-pixel includes a scattering layer.

4. The display device of claim 1, wherein the first color sub-pixel includes a scattering layer.

5. The display device of claim 1, wherein the display panel includes:

a transparent array substrate having a bank pattern thereon to divide the at least one pixel into the first color sub-pixel, the second color sub-pixel, and the third color sub-pixel, and having a second color dopant in the second color sub-pixel and a third color dopant in the third color sub-pixel; and

an encapsulation layer to cover the array substrate.

6. The display device of claim 5, wherein the encapsulation layer includes scattering bodies over at least one of the first color sub-pixel, the second color sub-pixel, and the third color sub-pixel.

7. The display device of claim 5, wherein the encapsulation layer includes scattering bodies over the first color sub-pixel.

8. The display device of claims 1, wherein the light source includes at least one of a laser diode and a light emitting diode.

9. The display device of claim 1, wherein the beam path converter includes a first mirror and a second mirror, the beam path converter being configured to rotate at least one of the first mirror around a first axis and the second mirror around a second axis to move the beam of the first color toward at least one of the first color sub-pixel, the second color sub-pixel, and the third color sub-pixel.

10. The display device of claim 1, wherein the first color is blue, the second color is red, and the third color is green.

11. A method for fabricating a display device including a display panel having at least one pixel, the method comprising:

forming a bank pattern on a transparent array substrate of the display panel, the bank pattern dividing the at least one pixel into a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel;

forming a second color dopant solution in the second color sub-pixel on the transparent array substrate and a third color dopant solution in the third color sub-pixel on the transparent array substrate; and

curing the first color dopant solution and the second color dopant solution,

wherein no dopant solution is formed in the first color sub-pixel.

12. The method of claim 11, wherein the cured second color dopant solution has a material property to emit a beam of the second color when reacting with a beam of the first color, and

wherein the cured third color dopant solution has a material property to emit a beam of the third color when reacting with the beam of the first color.

13. The method of claim 11, wherein the forming of the second color dopant solution and the third color dopant solution includes using an inkjet spraying method to spray the second color dopant solution in the second color sub-pixel on the transparent array substrate and the third color dopant solution in the third color sub-pixel on the transparent array substrate.

14. The method of claim 11, further comprising forming a scattering layer in at least one of the first color sub-pixel, the second color sub-pixel, and the third color sub-pixel on the transparent array substrate.

15. The method of claim 11, further comprising forming a scattering layer in the first color sub-pixel on the transparent array substrate.

16. The method of claim 11, further comprising forming an encapsulation layer over the transparent array substrate.

17. The method of claim 16, wherein the encapsulation layer includes scattering bodies over at least one of the first color sub-pixel, the second color sub-pixel, and the third color sub-pixel.

18. The method of claim 16, wherein the encapsulation layer includes scattering bodies over the first color sub-pixel.

19. The method of claim 11, wherein the first color is blue, the second color is red, and the third color is green.