公开(公告)号：US20170168205A1

公开(公告)日：2017-06-15

申请号：US14985696

申请日：2015-12-31

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Pao-Ju HSIEH ,  Chi-Fu TSENG ,  Yi-Chang DU ,  Mei-Chih PENG

IPC: G02B5/30 ,  G02B27/28

CPC classification number: G02B5/3016 ,  G02B5/3083 ,  G02B27/286 ,  Y10T428/10 ,  Y10T428/1036 ,  Y10T428/1041

Abstract: A wideband compound phase-retardation film including a half-wave phase-retardation film and a quarter-wave phase-retardation film with different reactive rod-like liquid crystal combination is provided. The half-wave phase-retardation film uses material having a birefringence of Δn1, and the quarter-wave phase-retardation film uses material having a birefringence of Δn2. The birefringence Δn1 is smaller than the birefringence Δn2. Furthermore, the birefringence dispersion Δn1(λ) is also smaller than Δn2(λ).

公开(公告)号：US20230212438A1

公开(公告)日：2023-07-06

申请号：US17830698

申请日：2022-06-02

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Jauder JENG ,  Hsien-Kuang LIN ,  Ming-Hsueh CHIANG ,  Tien-Shou SHIEH ,  Chi-Fu TSENG

IPC: C09J133/08 ,  C09J7/29 ,  C09J133/10 ,  C09J133/20 ,  C09J133/26 ,  C09J139/06 ,  B32B17/10 ,  B32B37/12 ,  C09J7/38

CPC classification number: C09J133/08 ,  C09J7/29 ,  C09J133/10 ,  C09J133/20 ,  C09J133/26 ,  C09J139/06 ,  B32B17/10458 ,  B32B37/1284 ,  C09J7/38 ,  B32B2551/00 ,  B32B2307/412 ,  B32B2307/42 ,  B32B2457/202

Abstract: A double-sided optically clear adhesive is provided. The double-sided optically clear adhesive includes a first adhesive layer and a second adhesive layer. The first adhesive layer includes a first resin and a first thermal-crosslinking agent. The first resin includes a hydroxyl group. The first thermal-crosslinking agent includes a first group. The second adhesive layer includes a second resin and a second thermal-crosslinking agent. The second resin includes a hydroxyl group. The second thermal-crosslinking agent includes a second group. The ratio of the equivalent number of the first group of the first thermal-crosslinking agent to the equivalent number of the hydroxyl group of the first resin is represented by r1. The ratio of the equivalent number of the second group of the second thermal-crosslinking agent to the equivalent number of the hydroxyl group of the second resin is represented by r2, wherein r1

公开(公告)号：US20230117528A1

公开(公告)日：2023-04-20

申请号：US17578080

申请日：2022-01-18

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Chi-Fu TSENG ,  Jauder JENG ,  Tien-Shou SHIEH ,  Chin-Hui CHOU

IPC: C08G63/78

Abstract: An oligomer is formed by reacting a diacid monomer with (a) epoxy resin or (b) glycidyl methacrylate, wherein the diacid monomer has a chemical structure of wherein X is —O—, and each R1 is independently CH3, CH2F, CHF2, or CF3. A composition containing the oligomer can be cured to serve as a sealant of an optoelectronic device, and the sealant can be lifted off by a laser beam irradiation.