Organic light-emitting diode display panel

• US 9,064,828 B2
• Filed: 10/24/2013
• Issued: 06/23/2015
• Est. Priority Date: 11/19/2012
• Status: Active Grant

• Current Assignee: LG Display Co., Ltd.
• Original Assignee: LG Display Co., Ltd.
• Inventors: Oh, ChungWan
• Primary Examiner(s): Soward, Ida M
• Application Number:
  US14/061,958
• Publication Number:
  US 20140138651A1
• Time in Patent Office: 607 Days
• Field of Search: 257/40, 257/59, 257/72, 257/E51.018, 257/E51.019
• US Class Current: 1/1
• CPC Class Codes: H10K 2102/311 Flexible OLED
• CPC Class Codes: H10K 50/844 Encapsulations
• CPC Class Codes: H10K 50/8445 multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers
• CPC Class Codes: H10K 59/1213 the pixel elements being TFTs
• CPC Class Codes: H10K 59/122 Pixel-defining structures or layers, e.g. banks
• CPC Class Codes: H10K 59/124 Insulating layers formed between TFT elements and OLED elements
• CPC Class Codes: H10K 59/131 Interconnections, e.g. wiring lines or terminals
• CPC Class Codes: H10K 77/111 Flexible substrates
• CPC Class Codes: Y02E 10/549 Organic PV cells

Abstract

Disclosed is an organic light-emitting diode (OLED) display panel. An OLED display panel includes a plurality of signal lines and a thin film transistor formed on a substrate, an interlayer insulating layer, a first electrode, a bank, an organic light-emitting layer, a second electrode, a first passivation layer, an organic layer, a second passivation layer and a barrier film, wherein the bank is formed to completely cover the interlayer insulating layer, and an inclination formed by side surfaces of the bank and the interlayer insulating layer is made to be gradual.

Claims

1. An organic light-emitting diode display panel, comprising:

a substrate divided into a active area which defines a plurality of pixels, and a non-active area formed to enclose the active area;

a plurality of signal lines and thin film transistors formed on the substrate;

an interlayer insulating layer formed on the substrate including the thin film transistors, and configured to expose one electrode of the thin film transistors to outside;

a first electrode formed on the interlayer insulating layer, and connected to said one electrode;

a bank extending up to the non-active area on the substrate including the first electrode, and covering the interlayer insulating layer;

an organic light-emitting layer formed on the first electrode in each pixel;

a second electrode on the organic light-emitting layer in an entire part of the active area;

a first passivation layer formed on an entire surface of the substrate including the second electrode;

an organic layer formed on the first passivation layer;

a second passivation layer formed on the first passivation layer including the organic layer;

a barrier film disposed in correspondence to the substrate; and

an adhesive layer interposed between the substrate and the barrier film, and configured to adhere the substrate and the barrier film to each other.

2. The device of claim 1, wherein the interlayer insulating layer and the bank are formed such that side surfaces thereof form a stair shape.

3. The device of claim 1, wherein the first passivation layer is formed to completely cover the interlayer insulating layer and the bank.

4. The device of claim 1, wherein the substrate is formed of a plastic material having a flexible characteristic.