Organic light emitting display panel

Patent metadata

Field	Value
Publication number	US-9306190-B2
Application number	US-201414571668-A
Country	US
Kind code	B2
Filing date	Dec 16, 2014
Priority date	Aug 14, 2014
Publication date	Apr 5, 2016
Grant date	Apr 5, 2016

Abstract

A display device is provided that comprises a pattern positioned on a substrate, the pattern comprising a multi-layered structure comprising a conductive layer and at least one light-blocking layer in whole or in part; and a bank positioned on the pattern, the bank comprising a light-absorbent material.

First claim

What is claimed is:

1. An organic light emitting display panel comprising:
a plurality of signal lines formed on a first and a second insulating layer, where the first insulating layer is formed on a substrate, and where at least one of the signal lines comprises a conductive layer and a light-blocking layer which comprises a first light-blocking layer containing metal oxides and a second light-blocking layer containing a light-absorbent metal;
a transistor formed on the first insulating layer and comprising a gate electrode, a source electrode, a drain electrode and a semiconductor layer;
a layer for blocking light formed in areas directly under the semiconductor layer of the transistor between the substrate and transistor where the layer for blocking light comprises the conductive layer, the first light-blocking layer and the second light-blocking layer, and where all of the plurality of signal lines are formed above the layer for blocking light;
a pixel electrode connected to the source electrode or to the drain electrode; and
a bank formed along the edge of the pixel electrode such that the pixel electrode is partially exposed, the bank comprising a light-absorbent material or coated with a light-absorbent substance,
wherein all of the plurality of signal lines are located on the substrate with the sequence of the second light-blocking layer, the first light-blocking layer and the conductive layer.

2. The organic light emitting display panel according to claim 1 , wherein the conductive layer comprises at least one of Al, Pt, Pd, Ag, Mg, Au, Ni, Nd, Ir, Cr, Li, Ca, Mo, Ti, W and Cu, or an alloy thereof.

3. The organic light emitting display panel according to claim 1 , wherein the light-absorbent metal is capable of absorbing external light incident through the substrate.

4. The organic light emitting display panel according to claim 3 , wherein the conductive layer comprises at least one of Al, Pt, Pd, Ag, Mg, Au, Ni, Nd, Ir, Cr, Li, Ca, Mo, Ti, W and Cu, or an alloy thereof.

5. The organic light emitting display panel according to claim 1 , wherein the metal oxide is selected from the group consisting of IGZO, IGO, IZO, ZTO, IHZO and IZZO.

6. The organic light emitting display panel according to claim 3 , wherein the external light incident through the substrate is non-polarized light.

7. The organic light emitting display panel according to claim 1 , wherein the substrate is selected from the group consisting of PET, PEN, polyamide and glass.

8. The organic light emitting display panel according to claim 1 , wherein the bank comprises carbon black, black pigments that are mixtures of carbon black and two or more color pigments, black dyes of a single ingredient or mixtures of two or more different color dyes, black resin, graphite powder, gravure ink, black spray or black enamel.

Assignees

• Lg Display Co Ltd

Inventors

• Kim Youngho
• Park Juneho
• Park Incheol

Classifications

• H10K2102/00

  Constructional details relating to the organic devices covered by this subclass · CPC title

• H10K59/8792

  comprising light absorbing layers, e.g. black layers · CPC title

• H10K59/131

  Interconnections, e.g. wiring lines or terminals · CPC title

• H10K59/123

  Connection of the pixel electrodes to the thin film transistors [TFT] · CPC title

• H10K59/122

  Pixel-defining structures or layers, e.g. banks · CPC title