Qingbing N Wang

7355668, Apr 8, 2008

May 22, 2003

10/443276

Satyendra Kumar - Kent OH, US
Qingbing Wang - Kent OH, US

Kent State University - Kent OH

G02F 1/1339

349155

A liquid crystal device comprises of a pair of opposed substrates defining a cell gap. Each substrate has an electrode disposed on a surface facing the other substrate. A plurality of spacers are randomly disposed in the cell gap and extend from one substrate to the other substrate, wherein a polymerization enhancing or initiating compound is not disposed on the surface of the spacers. Polymer columns are randomly disposed between the opposed substrates, extending from one substrate to the other, at least a portion of which are disposed around and immobilize the spacers in the cell gap. A liquid crystal material is disposed in the cell gap. A method for making a liquid crystal device is also provided. The internal columnar structures provide stability against mechanical pressure enabling the fabrication of durable, flexible LC display devices using plastic substrates for applications in portable and handheld devices.

20110310332, Dec 22, 2011

Feb 2, 2010

13/148382

Gary T. Boyd - Woodbury MN, US
Qingbing Wang - Woodbury MN, US

G02F 1/13357
F21V 7/04

349 65, 362609, 362611

A backlight system includes an extended area light guide () and crossed first () and second () prismatic recycling films. The light guide provides a first light distribution that has a maximum luminance at a first polar angle, e.g., from 70 to 90 degrees, relative to the optical axis () of the system. The recycling films provide a second light distribution. No diffuser film is provided between the light guide and the recycling film disposed nearest the light guide. Instead, light is specularly transmitted from the output surface () of the light guide to the input surface () of the recycling film nearest the light guide. The recycling films comprise prisms having refractive indices tailored to provide the second light distribution with a maximum luminance at a polar angle of 10 degrees or less. The prisms preferably have a refractive index from 1.63 to 1.76. Related methods and articles are also disclosed.

20120026431, Feb 2, 2012

Apr 14, 2010

13/264354

William D. Coggio - Hudson WI, US
John A. Wheatley - Lake Elmo MN, US
Tao Liu - Woodbury MN, US
Brian W. Ostlie - Hudson WI, US
Encai Hao - Woodbury MN, US
William Blake Kolb - West Lakeland MN, US
Qingbing Wang - Woodbury MN, US
Michael Benton Free - St. Paul MN, US
Brant U. Kolb - Afton MN, US
Michael L. Steiner - New Richmond WI, US
Scott M. Tapio - Falcon Heights MN, US

G02F 1/13357
F21V 7/04
F21V 9/14
F21V 8/00

349 65, 362627, 362623, 362 19

A lightguide () is disclosed. The lightguide includes a light guiding layer () for propagating light by total internal reflection, and an optical film () that is disposed on the light guiding layer. The optical film includes a plurality of voids, an optical haze that is not less than about 30%, and a porosity that is not less than about 20%. Substantial portions of each two neighboring major surfaces () in the lightguide are in physical contact with each other. The lightguide can be used as blacklight in a display system.

20120268967, Oct 25, 2012

Apr 19, 2012

13/450970

Qingbing Wang - Woodbury MN, US
Gary T. Boyd - Woodbury MN, US
Tri D. Pham - Oakdale MN, US
Robert Lee Erwin - Hudson WI, US
David Scott Thompson - West Lakeland MN, US

F21V 8/00

362627

Lightguides are disclosed. More particularly, lightguides that include a lightguiding layer and a light extracting layer having a structured surface are disclosed. The light guiding layer is optically coupled to a first set of structures of the structured surface at given locations, and is not optically coupled to a second set of structures at given locations, thereby producing total internal reflection at the second locations. The selective optical coupling may be achieved by a number of different contemplated means as discussed herein. The lightguides allow for distribution of light along with redirection towards an image viewer without a number of commonly required optical elements in backlights.

20130216784, Aug 22, 2013

Oct 20, 2011

13/882098

Jun-Ying Zhang - Perrysburg OH, US
Terry L. Smith - Roseville MN, US
Katherine A. Brown - Lake Elmo MN, US
Vivian W. Jones - Woodbury MN, US
David K. Sayler - Roseville MN, US
Timothy J. Hebrink - Scandia MN, US
Qingbing Wang - Woodbury MN, US
Karan Jindal - Woodbury MN, US
Encai Hao - Woodbury MN, US

3M INNOVATIVE PROPERTIES COMPANY - St. Paul MN

B08B 17/06

428147, 428141, 428143, 216 41, 216 51

Superhydrophobic films (200, 400) are disclosed. More particularly, durable superhydrophobic films (200, 400) having discrete flat faces (206, 406) spaced apart by valleys (208, 408) where the valleys and faces are covered by nanostructures or nanoparticles (424) are disclosed. Various methods of making such films are also disclosed.

7105845, Sep 12, 2006

Jul 2, 2004

10/883871

Satyendra Kumar - Kent OH, US
Carlos Vargas-Aburto - Fairborn OH, US
Qingbing Wang - Cuyahoga Falls OH, US

Kent State University - Kent OH

A61N 5/00
G21G 5/00

2504923, 2504921

An apparatus () for producing an alignment surface on an associated substrate () of a liquid crystal display. An electron source () produces a collimated electron beam (). A substrate support () supports the associated substrate () with a surface normal () of the substrate arranged at a preselected angle (α) relative to the collimated electron beam (). The collimated electron beam () is rastered across the associated substrate () at the preselected angle (α) while the substrate moves through the electron beam.

20220334432, Oct 20, 2022

Aug 23, 2021

17/409467

- Cupertino CA, US
Yufeng Yan - Santa Clara CA, US
Qingbing Wang - Campbell CA, US
Chenhua You - San Jose CA, US
Rong Liu - Sunnyvale CA, US
Jun Qi - San Jose CA, US
Zhenyue Luo - Santa Clara CA, US
Mookyung Son - Cupertino CA, US
Victor H. Yin - Cupertino CA, US

G02F 1/13357
G02F 1/1335

A display may have a pixel array such as a liquid crystal pixel array. The pixel array may be illuminated with backlight illumination from a direct-lit backlight unit. The backlight unit may include an array of light-emitting diodes on a printed circuit board. The backlight unit may include first, second, and third light spreading layers formed over the array of light-emitting diodes. A color conversion layer may be formed over the first, second, and third light spreading layers. First and second brightness enhancement films may be formed over the color conversion layer.

20210271003, Sep 2, 2021

Aug 8, 2019

17/259299

- St. Paul MN, US
Przemyslaw P. Markowicz - Woodbury MN, US
John A. Wheatley - Stillwater MN, US
Qingbing Wang - Campbell CA, US
Mark A. Roehrig - Stillwater MN, US
Tri D. Pham - Woodbury MN, US
Serena L. Schleusner - Roberts WI, US
Kenneth A.P. Meyer - Eagan MN, US
Levent Biyikli - Cedar Park TX, US
Thomas V. Weigman - Stillwater MN, US

G02B 3/00
G02B 5/28

An optical element including an array of microlenses, a pinhole mask, and a wavelength selective filter is described. The pinhole mask includes an array of pinholes with each pinhole in the array of pinholes aligned with a microlens in the first array of microlenses. The wavelength selective filter is adapted to transmit a first light ray having a first wavelength and transmitted from a first microlens in the array of microlenses through a first pinhole in the array of pinholes aligned with the first microlens, and to attenuate a second light ray having the first wavelength and transmitted from the first microlens through a second pinhole in the array of pinholes aligned with a second microlens in the first array of microlenses adjacent to the first microlens.