Organic electroluminescent display panel

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.

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.