Dong C Zhang

US Patent:

8304079, Nov 6, 2012

Filed:

Mar 29, 2007

Appl. No.:

11/731366

Inventors:

Ted Calvin Germroth - Kingsport TN, US
Xiaoliang Joe Zheng - Akron OH, US
Thauming Kuo - Kingsport TN, US
Dong Zhang - Uniontown OH, US
Brian Michael King - Jonesborough TN, US
Frank W. Harris - Boca Raton FL, US
Jiaokai Alexander Jing - Uniontown OH, US

Assignee:

Akron Polymer Systems - Akron OH

International Classification:

B32B 9/04
B32B 27/00

US Classification:

4284111, 428500

Abstract:

Optical compensation films (positive C-plate) with anisotropic subunits (OASUs) that are aromatic rings substituted with birefringence enhancing substituents (BES) and have high positive birefringence throughout the wavelength range 400 nm

US Patent:

20090096962, Apr 16, 2009

Filed:

Apr 9, 2008

Appl. No.:

12/100092

Inventors:

Michael Charles Shelton - Kingsport TN, US
Ted Calvin Germroth - Kingsport TN, US
Dong Zhang - Uniontown OH, US
Frank Wayne Harris - Boca Raton FL, US

Assignee:

EASTMAN CHEMICAL COMPANY - Kingsport TN

International Classification:

G02F 1/1335
C08B 3/06
C09D 101/12
B32B 23/20
F21V 9/06
C09K 19/52
C09K 19/00

US Classification:

349 96, 536 69, 1061711, 10617015, 10617016, 428220, 252589, 25229901, 428 11

Abstract:

The invention relates to the preparations and uses of cellulose esters with a high degree of substitution of hydroxyl groups (also called high DScellulose esters) as substrates and/or negative C-plate optical compensation films in LCD applications.

US Patent:

20120283371, Nov 8, 2012

Filed:

May 1, 2012

Appl. No.:

13/461372

Inventors:

BIN WANG - KINGSPORT TN, US
THAUMING KUO - KINGSPORT TN, US
DOUGLAS STEPHENS McWILLIAMS - PINEY FLATS TN, US
FRANK W. HARRIS - BOCA RATON FL, US
TED CALVIN GERMROTH - KINGSPORT TN, US
JIAOKAI JING - UNIONTOWN OH, US
DONG ZHANG - UNIONTOWN OH, US
XIAOLIANG ZHENG - HUDSON OH, US

Assignee:

AKRON POLYMER SYSTEMS, INC. - Akron OH

International Classification:

C08L 25/18
B05D 3/10
C08K 5/01
B05D 3/00
C08K 5/101
C08K 5/07

US Classification:

524317, 524315, 524365, 524545, 427299, 427535

Abstract:

A method for casting a styrenic fluoropolymer film on a substrate includes preparing a polymer solution by dissolving the fluoropolymer in a solvent or solvent blend whose Hansen solubility parameters (HSPs. MPa) satisfy the following relations: |SP−SP|

US Patent:

20180072882, Mar 15, 2018

Filed:

Aug 11, 2017

Appl. No.:

15/674705

Inventors:

- Akron OH, US
Alan Phillips - Kingsport TN, US
Bin Wang - Kingsport TN, US
Peiyao Wang - Akron OH, US
Lang Hu - Akron OH, US
Wentao Li - Kingsport TN, US
Liu Deng - Kingsport TN, US
Thauming Kuo - Kingsport TN, US
Dong Zhang - Uniontown OH, US
Frank Harris - Boca Raton FL, US
Ted Germroth - Kingsport TN, US

Assignee:

Akron Polymer Systems, Inc. - Akron OH

International Classification:

C08L 25/18
H01L 51/52
C08F 112/14
C08G 73/10
G02B 5/30
G02F 1/13363

Abstract:

Disclosed is an optical compensation film made of a solution cast of a polymer blend comprising a nitrated styrenic fluoropolymer and a polyimide. The compensation film is a positive-C plate having reversed wavelength dispersion that is capable of providing an achromatic (or broadband) retardation compensation. The optical film of the invention can be used in an optical device such as liquid crystal display (LCD) or organic light emitting diode (OLED) display.

US Patent:

20180044447, Feb 15, 2018

Filed:

Aug 11, 2017

Appl. No.:

15/675268

Inventors:

- Akron OH, US
Liu Deng - Kingsport TN, US
Wentao Li - Kingsport TN, US
Robert Sharpe - Johnson City TN, US
Eduardo Cervo - Kingsport TN, US
Thauming Kuo - Kingsport TN, US
Bin Wang - Kingsport TN, US
Alan Phillips - Johnson City TN, US
Xiaoliang Zheng - Hudson OH, US
Peiyao Wang - Akron OH, US
Dong Zhang - Uniontown OH, US
Frank Harris - Boca Raton FL, US
Ted Germroth - Kingsport TN, US

Assignee:

Akron Polymer Systems, Inc. - Akron OH

International Classification:

C08F 12/26
C08F 12/08
C08F 8/30
C08F 2/18
C08F 2/04
C08F 2/02
C08F 12/20
C08F 2/22

Abstract:

Disclosed is a process for making nitrated styrenic fluoropolymers having various degrees of substitution. The nitrated styrenic fluoropolymer is capable of providing an exceptionally high birefringence ranging from 0.02 to 0.036. Further, the birefringence can be tuned by varying the degree of substitution (DS) of the nitro group on the styrenic ring to meet the need for optical compensation film applications. More particularly, the optical compensation films of the present invention are for use in an in-plane switching LCD (IPS-LCD) and OLED display.

US Patent:

20140205822, Jul 24, 2014

Filed:

Jan 24, 2013

Appl. No.:

13/748895

Inventors:

- Akron OH, US
THAUMING KUO - KINGSPORT TN, US
TED GERMROTH - KINGSPORT TN, US
DONG ZHANG - UNIONTOWN OH, US
DOUG McWILLIAMS - PINEY FLATS TN, US
FRANK HARRIS - BOCA RATON FL, US
JIAOKAI JING - UNIONTOWN OH, US
XIAOLIANG ZHENG - HUDSON OH, US

Assignee:

AKRON POLYMER SYSTEMS, INC. - Akron OH

International Classification:

G02B 1/00
B29C 55/02
G02B 1/04
B32B 7/02
G02B 27/28
F21V 9/00

US Classification:

428216, 349117, 35948907, 313112, 428212, 264 17

Abstract:

An optical compensation film is disclosed herein, which is made by uniaxially or biaxially stretching of a multilayer film including a first polymer film having a refractive index profile satisfying the equations of (n+n)/2≧nand |n−n|

US Patent:

20140126055, May 8, 2014

Filed:

Nov 2, 2012

Appl. No.:

13/667219

Inventors:

- Akron OH, US
TED CALVIN GERMROTH - KINGSPORT TN, US
THAUMING KUO - KINGSPORT TN, US
FRANK W. HARRIS - BOCA RATON FL, US
DONG ZHANG - UNIONTOWN OH, US
DOUGLAS S. MCWILLIAMS - PINEY FLATS TN, US
JIAOKAI JING - UNIONTOWN OH, US
XIAOLIANG ZHENG - HUDSON OH, US

Assignee:

AKRON POLYMER SYSTEMS, INC. - AKRON OH

International Classification:

G02B 1/08

US Classification:

35948907

Abstract:

A multilayer optical film includes a wave plate having a refractive index profile of n>n≧nand a fluoropolymer film comprising a moiety ofwherein R, R, and Rare each independently hydrogen atoms, alkyl groups, substituted alkyl groups, or halogens, wherein at least one of R, R, and Ris a fluorine atom, wherein R is each independently a substituent on the styrenic ring, n is an integer from 0 to 5 representing the number of the substituents on the styrenic ring, and wherein nand nrepresent in-plane refractive indices and nthe thickness-direction refractive index of the wave plates; wherein said multilayer optical film has a positive in-plane retardation (R) and an out-of-plane retardation (R) that satisfies the equation of |R|

Address:

230 Silver Lk Rd APT H2, Church Hill, TN 37642

VIN:

2HGFG11657H503755

Make:

HONDA

Model:

CIVIC

Year:

2007