Organic light emitting display device
AssigneeLG Display Co., Ltd.
InventorHyunseung Kim
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Abstract
A display device includes a viewing angle control layer including a liquid crystal layer disposed on a second electrode of an organic light-emitting element and the control electrode disposed on the liquid crystal layer, the control electrode includes a plate electrode and a plurality of tip electrodes protruding from the plate electrode toward the second electrode, wherein the plurality of tip electrodes are arranged within a light-emitting area of the organic light-emitting element, and the liquid crystal layer includes positive c-plate liquid crystal molecules aligned vertically.
Claims20
An organic light-emitting display device comprising:
- a first electrode disposed on a substrate;
- a bank covering an edge of the first electrode and defining a light-emitting area;
- an organic light-emitting layer disposed in a light-emitting area;
- a second electrode disposed on the organic light-emitting layer;
- and
- a viewing angle control layer including:
- a liquid crystal layer disposed on the second electrode;
- and
- a control electrode disposed on the liquid crystal layer, wherein the control electrode includes a plate electrode and a plurality of tip electrodes protruding from the plate electrode toward the second electrode, and
- wherein the plurality of tip electrodes are arranged in the light-emitting area, and
- wherein an electric field is formed between the second electrode and the control electrode by the voltage applied to the control electrode.
An organic light-emitting display device comprising:
- a substrate including a plurality of sub-pixel areas;
- a plurality of organic light-emitting elements respectively disposed in the plurality of sub-pixel areas;
- a control electrode opposite to a cathode of each of the plurality of organic light-emitting elements;
- and
- a liquid crystal layer disposed between the cathode and the control electrode,
- wherein the control electrode includes a plate electrode and a plurality of tip electrodes protruding from the plate electrode toward the cathode, and
- wherein the plurality of tip electrodes are repetitively arranged in each of a plurality of portions of the plate electrode respectively overlapping with the plurality of organic light-emitting elements, and
- wherein an electric field is formed between the cathode and the control electrode by the voltage applied to the control electrode.
An organic light-emitting display device comprising:
- a plurality of organic light-emitting elements respectively disposed in a plurality of light-emitting areas;
- a plate electrode facing a cathode of the plurality of organic light-emitting elements;
- a plurality of tip electrodes protruding from the plate electrode and disposed in the plurality of light-emitting areas and each tip electrode having a shape to generate a plurality of high refractive index areas in close proximity of the plurality of tip electrodes and at least one low refractive index area around the plurality of high refractive index areas when an electric field is formed between the cathode and the plurality of tip electrodes by the voltage applied to the plurality of tip electrodes;
- and
- a liquid crystal layer disposed between the cathode and the plurality of tip electrodes.
Dependencies are inferred from the claim text.