Ruihai Sun from Dallas, TX

Cholesteric Liquid Crystal Device For Writing, Inputting, And Displaying Information
view source
US Patent:

20030071958, Apr 17, 2003
Filed:

Oct 12, 2001
Appl. No.:

09/976850
Inventors:

Shushan Li - Plano TX, US
Yong-Jing Wang - Ossining NY, US
Jianmi Gao - Richardson TX, US
Ruihai Sun - Amarillo TX, US
Yong Kang - Wylie TX, US
Ying Sun - Livermore CA, US
Gang Chen - Plano TX, US
International Classification:

G02F001/1335
US Classification:

349/156000
Abstract:

A liquid crystal device for writing, inputting, and displaying information comprises: a first substrate, a second substrate, and a cell structure sandwiched between the two substrates, defining a plurality of isolated subcells. Means for applying an electric field to drive states of the cholesteric liquid crystal in the subcells is coupled to the electrodes. An electromagnetic sensitive panel is positioned proximately under the surface of the second substrate for receiving an electronic/magnetic signal transmitted by a writing tool. In use, when the tip of the writing tool is forced again and moved around the surface of the first substrate, a true track of the movement of the tip is directly shown on the writing surface, while information of the movement of the tip of the writing tool is sensed by the electromagnetic sensitive panel simultaneously.

Reverse Reflectance Mode Direct-View Liquid Crystal Display Employing A Liquid Crystal Having A Characteristic Wavelength In The Non-Visible Spectrum
view source
US Patent:

20020180913, Dec 5, 2002
Filed:

Dec 19, 2001
Appl. No.:

10/025086
Inventors:

Jianan Hou - Germantown MD, US
Jianmi Gao - Richardson TX, US
Yong-Jing Wang - Ossining NY, US
Shushan Li - Plano TX, US
Ruihai Sun - Wylie TX, US
Gang Chen - Plano TX, US
International Classification:

G02F001/1335
US Classification:

349/115000
Abstract:

Disclosed are various reverse-mode direct-view liquid crystal displays (LCD) employing a liquid crystal having a characteristic wavelength in the non-visible spectrum, including reflective and transflective mode displays, and methods of fabrication. In accordance with the principles disclosed, a reflectance mode direct-view LCD includes a polarizer, a reflector, and a cholesteric liquid crystal (CLC) packed between the polarizer and reflector and having a characteristic wavelength to reflect non-visible spectrum. Portions of the CLC can selectively exhibit a planar state or a focal-conic state, the portions of the CLC in the planar state appearing black, and the portions of the CLC in the focal-conic state appearing white to an observer of the LCD. A transflective mode LCD is derived by further combination of polarizers, transflective mirrors and internal light sources.

Ruihai Sun