OLED display device that prevents shorting of interconnections during manufacture thereof

Patent metadata

Field	Value
Publication number	US-9437666-B2
Application number	US-201414558060-A
Country	US
Kind code	B2
Filing date	Dec 2, 2014
Priority date	Nov 30, 2009
Publication date	Sep 6, 2016
Grant date	Sep 6, 2016

Abstract

An organic light emitting diode (OLED) display device, including a first substrate and a second substrate facing each other, a sealant arranged between the first and second substrates to adhere the first and second substrates together, a plurality of interconnections arranged on one of the first and second substrates and a plurality of cladding parts covering at least a portion of each of the plurality of interconnections at a location that corresponds to the sealant, each of the cladding parts including a material having a higher melting point than that of the interconnections. By including the cladding parts, a short circuit between the interconnections caused by heat applied to the sealant can be prevented, and safety and reliability of the OLED display device can be improved.

First claim

What is claimed is:

1. An organic light emitting diode (OLED) display device, comprising:
a first substrate and a second substrate facing each other;
a gate insulating layer, a gate electrode, an interlayer insulating layer, first and second source/drain electrodes, a protection layer, a planarization layer, and first and second pixel electrodes arranged on the first substrate;
a sealant arranged between the first and second substrates to adhere the first and second substrates together;
a plurality of interconnections arranged on one of the first and second substrates; and
a plurality of cladding parts covering at least a portion of each of the plurality of interconnections at a location that corresponds to the sealant, each of the cladding parts including a material having a higher melting point than that of the interconnections, wherein each cladding part covers sides and a portion of a top surface that is less than an entirety of the top surface of a corresponding one of said interconnections at the location that corresponds to the sealant, wherein the plurality of cladding parts are comprised of substantially a same composition as that of the first pixel electrode.

2. The OLED display device of claim 1 , wherein each of the cladding parts is comprised of a material selected from a group consisting of a metallic material, an organic material and an inorganic material.

3. The OLED display device of claim 1 , further comprising an emission region and a non-emission region arranged between the first and second substrates, the plurality of interconnections being arranged in the non-emission region and extending from signal lines arranged in the emission region.

4. The OLED display device of claim 1 , further comprising an emission and a non-emission region arranged between the first and second substrates, the plurality of interconnections being arranged in the non-emission region and extending from one of the gate electrode, the first and second source/drain electrodes, and the first and second pixel electrodes arranged in the emission region.

5. The OLED display device of claim 1 , wherein the plurality of cladding parts are comprised of substantially a same composition as at least one of the interlayer insulating layer, the first and second source/drain electrodes, the protection layer, the planarization layer and the first and second pixel electrodes.

6. An organic light emitting diode (OLED) display device, comprising:
first and second substrates facing each other;
a gate insulating layer, a gate electrode, an interlayer insulating layer, a first source/drain electrode, a second source/drain electrode, a protection layer, a planarization layer, a first pixel electrode and a second pixel electrode arranged on the first substrate;
an emission region arranged between the first substrate and the second substrate, the emission region including a plurality of signal lines;
a sealant arranged along an edge of the emission region to adhere the first and second substrates together;
a non-emission region arranged outside the sealant;
a plurality of interconnections extending from the signal lines in the emission region through the sealant and into the non-emission region; and
a plurality of cladding parts covering at least a portion of each of the plurality of interconnections at a location corresponding to where the interconnections extend through the sealant, the cladding parts including a material having a higher melting point than that of the interconnections, wherein each of said cladding parts covers sides and a portion of a top surface that is less than an entirety of the top surface of a corresponding one of said interconnections at a location corresponding to where the one of said interconnections extends through the sealant, wherein the plurality of cladding parts are comprised of substantially a same composition as that of the first pixel electrode.

7. The OLED display device of claim 6 , wherein each of said plurality of cladding parts is comprised of a material selected from a group consisting of a metallic material, an organic material and an inorganic material.

8. The OLED display device of claim 6 , wherein the signal lines from which the interconnections extend from are selected from a group consisting of the gate electrode, the first source/drain electrode and the second source/drain.

9. The OLED display device of claim 6 , wherein the cladding parts are comprised of a same composition as at least one of the interlayer insulating layer, the first source/drain electrode, the second source/drain electrode, the protection layer, the planarization layer, the first pixel electrode and the second pixel electrode.

10. The OLED display device of claim 1 , the cladding parts to prevent an electrical short between adjacent ones of the interconnections due to melting of the interconnections during an application of heat during a curing process of the sealant.

11. The OLED display device of claim 1 , wherein the plurality of interconnections include at least six interconnections extending in parallel to each other and being arranged in a vicinity of each other, wherein each of the interconnections extend in a direction that is orthogonal to a longitudinal direction of a portion of the sealant that the interconnections extend through.

12. The OLED display device of claim 6 , the cladding parts to prevent an electrical short between adjacent ones of the interconnections due to melting of the interconnections during an application of heat during a curing process of the sealant.

13. The OLED display device of claim 6 , wherein the plurality of interconnections include at least six interconnections extending in parallel to each other and being arranged in a vicinity of each other, wherein each of the interconnections extend in a direction that is orthogonal to a longitudinal direction of a portion of the sealant that the interconnections extend through.

14. The OLED display device of claim 1 , wherein the cladding parts are absent from portions of the one of the first and second substrates arranged in between adjacent ones of the plurality of interconnects.

15. The OLED display device of claim 7 , wherein the cladding parts are absent from portions of the one of the first and second substrates arranged in between adjacent ones of the plurality of interconnects.

Assignees

• Samsung Display Co Ltd

Inventors

• Cho Seung-Yeon
• Lhee Zail
• Kang Tae-Wook
• Kim Hun
• Suh Mi-Sook
• Bang Hyun-Chol

Classifications

• H10K59/8794

  Arrangements for heating and cooling · CPC title

• H10K59/8722 Primary

  Peripheral sealing arrangements, e.g. adhesives, sealants · CPC title

• H01L51/5246

  Electricity · mapped topic

• H01L51/5253

  Electricity · mapped topic

• H01L27/3276 Primary

  Electricity · mapped topic