Invention Grant
- Patent Title: Cellulose ester based quarter wave plates having normal wavelength dispersion
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Application No.: US15064061Application Date: 2016-03-08
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Publication No.: US09964667B2Publication Date: 2018-05-08
- Inventor: Bin Wang , Thauming Kuo , Michael Eugene Donelson , Douglas Stephens McWilliams
- Applicant: Eastman Chemical Company
- Applicant Address: US TN Kingsport
- Assignee: Eastman Chemical Company
- Current Assignee: Eastman Chemical Company
- Current Assignee Address: US TN Kingsport
- Agent Kenrick L. Vidale; Tammye L. Taylor
- Main IPC: C09K19/00
- IPC: C09K19/00 ; G02B1/08 ; G02B5/30 ; C08J5/18 ; C08K5/01 ; C08K5/105
Abstract:
The present invention pertains to an optical film for use as a quarter wave plate (QWP) having a normal wavelength dispersion curve. More specifically, this invention relates to a quarter wave plate based on cellulose ester polymer and fused ring additives.
Public/Granted literature
- US20160187539A1 CELLULOSE ESTER BASED QUARTER WAVE PLATES HAVING NORMAL WAVELENGTH DISPERSION Public/Granted day:2016-06-30
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