Organic light emitting diode display substrate and display device
AssigneeBoe Technology Group Co., Ltd.
InventorChunyan Ji
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Abstract
An OLED display substrate and a display device are provided. The OLED display substrate includes a plurality of sub-pixel regions corresponding to different colors arranged on a substrate. Each sub-pixel region includes a thin film transistor, an anode, a light-emitting layer and a cathode arranged successively in a direction away from the substrate, and a microcavity structure is formed between the anode and the cathode. The anode includes a hollowed-out portion, the light-emitting layers of the sub-pixel regions corresponding to different colors are of different thicknesses, or the anodes of the sub-pixel regions corresponding to different colors are of different thicknesses.
Claims17
An organic light emitting diode (OLED) display substrate, comprising a plurality of sub-pixel regions corresponding to different colors formed on a substrate, wherein each of the plurality of sub-pixel regions comprises a thin film transistor (TFT), an anode, a light-emitting layer and a cathode arranged successively in a direction away from the substrate, and a microcavity structure is formed between the anode and the cathode, the anode comprises a hollowed-out portion, the light-emitting layers of the sub-pixel regions corresponding to different colors are of different thicknesses, or the anodes of the sub-pixel regions corresponding to different colors are of different thicknesses, wherein the hollowed-out portion is slit-like, and the anode is of a Bragg diffraction grating structure.
A display device comprising an organic light emitting diode (OLED) display substrate, the OLED display substrate comprising a plurality of sub-pixel regions corresponding to different colors formed on a substrate, wherein each of the plurality of sub-pixel regions comprises a thin film transistor (TFT), an anode, a light-emitting layer and a cathode arranged successively in a direction away from the substrate, and a microcavity structure is formed between the anode and the cathode, the anode comprises a hollowed-out portion, the light-emitting layers of the sub-pixel regions corresponding to different colors are of different thicknesses, or the anodes of the sub-pixel regions corresponding to different colors are of different thicknesses, wherein the hollowed-out portion is slit-like, and the anode is of a Bragg diffraction grating structure.
An organic light emitting diode (OLED) display substrate, comprising a plurality of sub-pixel regions corresponding to different colors formed on a substrate, wherein each of the plurality of sub-pixel regions comprises a thin film transistor (TFT), an anode, a light-emitting layer and a cathode arranged successively in a direction away from the substrate, and a microcavity structure is formed between the anode and the cathode, the anode comprises a hollowed-out portion, the light-emitting layers of the sub-pixel regions corresponding to different colors are of different thicknesses, or the anodes of the sub-pixel regions corresponding to different colors are of different thicknesses, wherein the anode is of a grating structure, the grating structures of the sub-pixel regions corresponding to different colors are of different periods and widths, the width of the grating structure of the sub-pixel region is in direct proportion to a wave length of light of the color corresponding to the sub-pixel region, and the period of the grating structure of the sub-pixel region is in direct proportion to the wave length of light of the color corresponding to the sub-pixel region.
Dependencies are inferred from the claim text.