Pixel array package structure and display panel

Patent metadata

Field	Value
Publication number	US-12412874-B2
Application number	US-202318460673-A
Country	US
Kind code	B2
Filing date	Sep 4, 2023
Priority date	Aug 22, 2018
Publication date	Sep 9, 2025
Grant date	Sep 9, 2025

Abstract

A pixel array package structure includes: a substrate; a pixel array disposed on the substrate, in which the pixel array includes a plurality of light emitting diode chips, and the light emitting diode chips include at least one red diode chip, at least one green diode chip, at least one blue diode chip, and a combination thereof; a reflective layer disposed on the substrate and between any two adjacent of the light emitting diode chips; a light-absorbing layer disposed on the reflective layer and surrounding the pixel array; and a light-transmitting layer disposed on the pixel array, the reflective layer, and the light-absorbing layer, in which the light-transmitting layer has an upper surface and a lower surface opposite thereto, and the lower surface is in contact with the pixel array, and the upper surface has a roughness of 0.005 mm to 0.1 mm.

First claim

What is claimed is:

1. A pixel array package structure, comprising:
a substrate;
a pixel array disposed on the substrate, wherein the pixel array comprises a plurality of light emitting diode chips, and the plurality of light emitting diode chips comprise a red diode chip, a green diode chip, a blue diode chip, and a combination thereof;
a reflective layer disposed on the substrate and between any two adjacent of the plurality of light emitting diode chips;
a light-absorbing layer embedded in the reflective layer and surrounding the pixel array; and
a light-transmitting layer disposed on the pixel array, the reflective layer, and the light-absorbing layer, wherein the light-transmitting layer has an upper surface and a lower surface opposite thereto, and the lower surface is in contact with the pixel array.

2. The pixel array package structure of claim 1 , further comprising an anti-external light material disposed on the light-transmitting layer.

3. The pixel array package structure of claim 2 , wherein the anti-external light material is a polarizer.

4. The pixel array package structure of claim 1 , wherein the reflective layer is composed of a mixture of a colloidal material and inorganic particles, wherein the inorganic particles comprise titanium dioxide, boron nitride, silicon dioxide, barium sulfate or aluminum oxide.

5. The pixel array package structure of claim 1 , wherein an upper surface of the light-absorbing layer is substantially coplanar with an upper surface of the pixel array.

6. The pixel array package structure of claim 1 , wherein the light-absorbing layer is composed of a colloidal material and an inorganic material, or a colloidal material and an organic material.

7. The pixel array package structure of claim 6 , wherein the inorganic material is carbon powder or perovskite.

8. The pixel array package structure of claim 7 , wherein the carbon powder has a specific surface area of 50 m 2 /g to 70 m 2 /g.

9. A display panel, comprising:
a plurality of sub-display panels, any two adjacent of the sub-display panels having a splicing gap, wherein each of the sub-display panels comprises a plurality of the pixel array package structures of claim 1 .

10. The display panel of claim 9 , further comprising an anti-external light material disposed on the light-transmitting layer.

11. The display panel of claim 10 , wherein the anti-external light material is a polarizer.

12. The display panel of claim 9 , wherein the reflective layer is composed of a mixture of a colloidal material and inorganic particles, wherein the inorganic particles comprise titanium dioxide, boron nitride, silicon dioxide, barium sulfate or aluminum oxide.

13. The display panel of claim 9 , wherein an upper surface of the light-absorbing layer is substantially coplanar with an upper surface of the pixel array.

14. The display panel of claim 9 , wherein the light-absorbing layer is composed of a colloidal material and an inorganic material, or a colloidal material and an organic material.

15. The display panel of claim 14 , wherein the inorganic material is carbon powder or perovskite.

16. The display panel of claim 15 , wherein the carbon powder has a specific surface area of 50 m 2 /g to 70 m 2 /g.

17. The display panel of claim 9 , wherein the splicing gap between the sub-display panels is less than 100 μm.

18. The display panel of claim 9 , wherein any two adjacent of the pixel array package structures have a pitch therebetween.

19. The display panel of claim 18 , wherein the LED chips in the pixel array package structure are micro LEDs, the pitch between the pixel array package structures is less than 0.5 mm.

20. The display panel of claim 18 , wherein the LED chips in the pixel array package structure are mini LEDs, the pitch between the pixel array package structures is about 0.5 mm to 1.0 mm.

Assignees

• Lextar Electronics Corp

Inventors

• Wu Hui-Ru
• Liang Jian-Chin
• Chen Jo-Hsiang
• Lai Lung-Kuan
• Tsai Cheng-Yu
• Su Hsin-Lun
• Chen Ting-Kai

Classifications

• H10W90/00 Primary

  Package configurations · CPC title

• H10K50/868

  Arrangements for polarized light emission (H10K50/86 takes precedence) · CPC title

• H10K50/856

  comprising reflective means · CPC title

• H10K50/865

  comprising light absorbing layers, e.g. light-blocking layers · CPC title

• H10K59/8793

  Arrangements for polarized light emission (H10K59/8791 takes precedence) · CPC title