ORGANIC ELECTROLUMINESCENT DISPLAY PANEL

• US 20110062861A1
• Filed: 11/05/2010
• Published: 03/17/2011
• Est. Priority Date: 08/12/2005
• Status: Abandoned Application

• Current Assignee: Ming-Chang Shih, Shi-Hao Lee
• Original Assignee: Ming-Chang Shih, Shi-Hao Lee
• Inventors: LEE, Shi-Hao, Shih, Ming-Chang
• Application Number:
  US12/940,832
• Publication Number:
  US 20110062861A1
• Time in Patent Office: Days
• US Class Current: 313/504
• CPC Class Codes: H10K 50/86 Arrangements for improving contrast, e.g. preventing reflection of ambient light
• CPC Class Codes: H10K 59/126 Shielding, e.g. light-blocking means over the TFTs
• CPC Class Codes: H10K 59/8791 Arrangements for improving contrast, e.g. preventing reflection of ambient light

Abstract

An organic electroluminescent display panel comprises a substrate, an anti-reflective layer, a light-shielding layer, a transistor and an organic light emitting diode. The substrate has an upper surface and a lower surface opposite to the upper surface. The anti-reflective layer is disposed above the upper surface of the substrate. The light-shielding layer is disposed directly above the anti-reflective layer and has an aperture to expose at least part of the anti-reflective layer. The transistor is disposed on the light-shielding layer. The organic light emitting diode is connected to the transistor and disposed directly above the at least part of the anti-reflective layer which is exposed via the aperture.

Claims

1. An organic electroluminescent display panel, comprising:

a substrate having an upper surface and a lower surface opposite to the upper surface;

an anti-reflective layer disposed above the upper surface of the substrate;

a light-shielding layer disposed directly above the anti-reflective layer and having an aperture to expose at least part of the anti-reflective layer;

a thin film transistor disposed on the light-shielding layer; and

an organic light emitting diode connected to the thin film transistor and disposed directly above the at least part of the anti-reflective layer which is exposed via the aperture.

2. The organic electroluminescent display panel of claim 1, wherein the anti-reflective layer has a thickness less than about 3000 nm.

3. The organic electroluminescent display panel of claim 1, wherein the anti-reflective layer includes at least one metal compound layer.

4. The organic electroluminescent display panel of claim 3, wherein the metal compound layer is selected from the group consisting of metal oxide, metal nitride, metal sulfide, and combinations thereof.

5. The organic electroluminescent display panel of claim 3, wherein the anti-reflective layer includes a metallic element selected from the group consisting of Cr, Mo, Cu, Zn, In, Ti, Al and Ag.

6. The organic electroluminescent display panel of claim 1, wherein the light-shielding layer comprises a metal layer.

7. The organic electroluminescent display panel of claim 1, wherein the light-shielding layer and the anti-reflective layer both include metallic elements belonging to the same group in the periodic table of the chemical elements.

8. The organic electroluminescent display panel of claim 7, wherein the light-shielding layer includes a metallic element selected from the group consisting of Cr, Mo, Cu, Zn, In, Ti, Al and Ag.

9. The organic electroluminescent display panel of claim 1, wherein the anti-reflective layer includes a plurality of sub-layers which have a total thickness that is odd multiples of ¼

wavelength of visible light.