Title:
OPTICAL CLEAR ADHESIVE TAPE HAVING IMPROVED LEVEL DIFFERENCE ABSORBABILITY AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/111338
Kind Code:
A1
Abstract:
The present invention relates to an optical clear adhesive tape. The optical clear adhesive tape is prepared from an optical clear adhesive composition comprising: a prepolymer syrup in which an acrylate-based compound and a photoinitiator are partially polymerized; a primary curing photoinitiator; and a secondary curing photoinitiator. The optical clear adhesive composition is primarily cured to be maintained in a semi-cured state. The optical clear adhesive composition in a semi-cured state is applied to a substrate having a step and then completely cured by secondary curing, whereby the resulting optical clear adhesive tape has level difference absorbability. The optical adhesive tape of the present invention has excellent level difference absorbability and durability.
Inventors:
LEE JI HYE (KR)
NAM SEUNG WOONG (KR)
YE KWANG NAM (KR)
LIM HOI DEUK (KR)
PARK MIN SOO (KR)
NAM SEUNG WOONG (KR)
YE KWANG NAM (KR)
LIM HOI DEUK (KR)
PARK MIN SOO (KR)
Application Number:
PCT/KR2018/015055
Publication Date:
June 04, 2020
Filing Date:
November 30, 2018
Export Citation:
Assignee:
YOUNGWOO CO LTD (KR)
International Classes:
C09J7/38; C09J11/06; C09J133/08
Foreign References:
| KR20170082190A | 2017-07-14 | |||
| KR20160015474A | 2016-02-15 | |||
| KR20160062305A | 2016-06-02 | |||
| KR20170103079A | 2017-09-13 | |||
| KR20130130927A | 2013-12-03 |
Attorney, Agent or Firm:
KIM, Hong Gyun (KR)
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