Oled lighting apparatus
AssigneeLG Display Co., Ltd.
InventorShin-Bok LEE
Life of this patent
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Abstract
Disclosed herein is an OLED lighting apparatus which can compensate for high sheet resistance of a first electrode formed of a transparent conductive material while improving light extraction efficiency through enhancement in aperture ratio. For this purpose, the OLED lighting apparatus omits auxiliary wires and, instead of the auxiliary wires, includes a first auxiliary wire and a second auxiliary wire to secure low resistance. As a result, the OLED lighting apparatus can compensate for high sheet resistance of the first electrode, thereby achieving normal light emission without reduction in luminance due to current drop when implemented as a large-area high-resolution lighting apparatus.
Claims20
An OLED lighting apparatus, comprising:
- a substrate;
- a first auxiliary wire disposed on the substrate;
- a second auxiliary wire disposed on the substrate and connected to the first auxiliary wire;
- a protective layer covering the first auxiliary wire and the second auxiliary wire including the substrate, and having a through-hole exposing a portion of the first auxiliary wire;
- a first electrode disposed on the protective layer, connected to the first auxiliary wire through the through-hole and having an opening exposing a portion of the protective layer;
- an organic light emitting layer disposed on the first electrode;
- and
- a second electrode disposed on the organic light emitting layer.
An OLED lighting apparatus, comprising:
- a substrate;
- a plurality of auxiliary wires disposed in a matrix form on the substrate;
- a first electrode disposed on the substrate and having an opening, wherein the first electrode contacts the plurality of auxiliary wires;
- an organic light emitting layer disposed on the first electrode;
- and
- a second electrode disposed on the organic light emitting layer.
An OLED lighting apparatus, comprising:
- a substrate;
- an auxiliary wire disposed on the substrate;
- a protective layer disposed on the entire surface of the substrate including the auxiliary wire, wherein the protective layer has a through-hole exposing a portion of the auxiliary wire;
- a first electrode disposed on the protective layer, connected to the auxiliary wire through the through-hole and having an opening exposing a portion of the protective layer;
- an organic light emitting layer disposed on the first electrode;
- and
- a second electrode disposed on the organic light emitting layer.
Dependencies are inferred from the claim text.