IP Library Granted Patent US 9,385,343
Granted Patent B2
US 9,385,343 · App. 14/338,828 · Granted Jul 5, 2016

Organic light-emitting diode display panel

Inventor: Zheng Li (Shanghai, CN)
Assignee: EverDisplay Optronics (Shanghai) Limited
H01L51/5284
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Quick Facts
Patent No.
US 9,385,343
App. No.
14/338,828
Granted
Jul 5, 2016
Kind
B2
Abstract

An organic light-emitting diode display panel includes a substrate on which an OLED (organic light-emitting diode) light-emitting element is mounted. The OLED light-emitting element includes an OLED organic layer. A black silicon structure is disposed on the substrate and reveals the OLED organic layer. The black silicon structure absorbs ambient light to reduce the reflectance of the ambient light. By disposing the black silicon structure around the OLED organic layer or by directly forming the OLED organic layer in the black silicon structure, the extremely high light absorbing capability of the black silicon structure is used to significantly reduce the reflectance of the ambient light. A clear display effect in a bright environment can be achieved under smaller luminance, reducing the luminance of the display panel and saving the power consumption. Furthermore, the number of films and the overall thickness of the panel can be reduced.

Claims (10)

1. An organic light-emitting diode display panel comprising:

a substrate, with an OLED (organic light-emitting diode) light-emitting element mounted on the substrate, with the OLED light-emitting element comprising

an OLED organic layer;

an organic blocking layer disposed surrounding the OLED organic layer; and

a black silicon structure, disposed on a top surface of the organic blocking layer without contacting the OLED organic layer, revealing the OLED organic layer, the black silicon structure being adapted to absorb ambient light to reduce a reflectance of the ambient light.

2. The organic light-emitting diode display panel according to claim 1 , wherein the black silicon structure is a black silicon layer disposed on the OLED light-emitting element, and the black silicon structure includes an opening to reveal the OLED organic layer below the black silicon layer.

3. The organic light-emitting diode display panel according to claim 1 , wherein the OLED organic layer is disposed in the black silicon structure, and the black silicon structure is a plurality of black silicon cones protruding beyond the OLED organic layer.

4. The organic light-emitting diode display panel according to claim 3 , wherein the black silicon structure is formed on a silicon plate by etching, and the black silicon structure includes a surface having a micro structure with a geometric shape.

5. The organic light-emitting diode display panel according to claim 1 , wherein a visible light reflectance of the black structure is smaller than 1%.

6. The organic light-emitting diode display panel according to claim 4 , wherein the geometric shape of the micro structure is of a peak shape.

Assignments (3)
CORRECTIVE ASSIGNMENT TO CORRECT THE ADDRESS OF THE ASSIGNEE PREVIOUSLY RECORDED ON REEL 053259 FRAME 0773. ASSIGNOR(S) HEREBY CONFIRMS THE REMAINDER OF THE ASSIGNMENT IN ITS ENTIRETY. Recorded Jul 22, 2020
From: EVERDISPLAY OPTRONICS (SHANGHAI) LIMITED
To: EVERDISPLAY OPTRONICS (SHANGHAI) CO., LTD.
Reel/Frame 053284/0303 →
CHANGE OF NAME Recorded Jul 17, 2020
From: EVERDISPLAY OPTRONICS (SHANGHAI) LIMITED
To: EVERDISPLAY OPTRONICS (SHANGHAI) CO., LTD.
Reel/Frame 053259/0773 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 23, 2014
From: LI, ZHENG
To: EVERDISPLAY OPTRONICS (SHANGHAI) LIMITED
Reel/Frame 033374/0417 →
Priority Claims (1)
CN 2014 1 02654128 · Jun 16, 2014 · national
Continuity (1)
Related Publication 20150364725A1 · Dec 17, 2015