Display panel, method for manufacturing the same, motherboard for manufacturing the same and method for manufacturing a display substrate for the same

• US 7,952,679 B2
• Filed: 02/19/2008
• Issued: 05/31/2011
• Est. Priority Date: 02/20/2007
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Kim, Hyun-Young, Na, Hyung-Don, Kim, Jung-Yun, Jung, Kwan-Wook, Tae, Seung-Gyu
• Primary Examiner(s): Kim; Richard H
• Application Number:
  US12/033,645
• Publication Number:
  US 20080198287A1
• Time in Patent Office: 1,197 Days
• Field of Search: 349/153
• US Class Current: 349/153
• CPC Class Codes: G02F 1/133357 Planarisation layers
• CPC Class Codes: G02F 1/1339 Gaskets; Spacers; Sealing of cells
• CPC Class Codes: G02F 1/13454 Drivers integrated on the active matrix substrate G02F1/136277 takes precedence
• CPC Class Codes: G02F 2202/02 organic material

Abstract

A display panel includes a first substrate, a thin-film transistor (TFT), an organic layer, a second substrate, a seal line, and a conductive pattern. The first substrate includes a pixel part and a driving part connected to the pixel part. The TFTs are formed in the pixel part and the driving part. The organic layer is formed on the first substrate having the TFTs formed thereon. The second substrate is opposite to the first substrate. The seal line is disposed between an edge portion of the first substrate having the organic layer formed thereon and an edge portion of the second substrate. The seal line combines the first substrate with the second substrate. The conductive pattern is disposed between the seal line and the organic layer.

Claims

1. A display panel comprising:

a first substrate including a pixel part and a driving part connected to the pixel part;

thin-film transistors (TFTs) formed in the pixel part and the driving part of the first substrate;

an organic layer formed on the first substrate having the TFTs formed thereon, the organic layer being formed in the pixel part and the driving part;

a pixel electrode formed on the organic layer in the pixel part;

a second substrate facing the first substrate;

a seal line disposed between an edge portion of the first substrate and an edge portion of the second substrate, wherein the seal line combines the first substrate with the second substrate; and

a conductive pattern disposed between the seal line and the organic layer in the driving part so that the conductive pattern directly contacts each of the seal line and the organic layer, the conductive pattern being formed from a same layer as the pixel electrode.

2. The display panel of claim 1, wherein the conductive pattern comprises a material having a greater adhesive strength against the seal line than the organic layer.

3. The display panel of claim 2, wherein the conductive pattern comprises a metal or a metal oxide.

4. The display panel of claim 1, wherein the conductive pattern comprises indium tin oxide (ITO) or indium zinc oxide (IZO).

5. The display panel of claim 1, wherein the conductive pattern overlaps the seal line.

6. The display panel of claim 1, wherein the conductive pattern is formed on the driving part.

7. The display panel of claim 6, wherein the driving part comprises a gate driver to drive the TFT in the pixel part and overlaps the seal line.

8. The display panel of claim 1, further comprising a liquid crystal layer interposed between the first and second substrates and sealed by the seal line.

9. The display panel of claim 1, wherein the second substrate comprises:

a black matrix to cover the seal line and the driving part; and

a common electrode opposite to the pixel electrode.

10. A method for manufacturing a display panel, comprising:

forming TFTs in a pixel part of a first substrate and a driving part of the first substrate, wherein the driving part is connected to the pixel part;

forming an organic layer in the pixel part and the driving part of the first substrate having the TFTs formed thereon;

patterning a metal layer formed on the organic layer to form a pixel electrode and a conductive pattern, the pixel electrode being disposed on the pixel part, the conductive pattern being disposed on a portion of the organic layer to directly contact the organic layer formed in the driving part;

disposing a second substrate facing the first substrate; and

forming a seal line partially overlapping the conductive pattern between an edge portion of the first substrate and an edge portion of the second substrate to combine the first substrate with the second substrate, wherein the seal line directly contacts the conductive pattern.