Encai Hao

8343622, Jan 1, 2013

Jul 1, 2008

12/165765

Lan H. Liu - Rosemount MN, US
Robert F. Kamrath - Mahtomedi MN, US
Encai Hao - Woodbury MN, US
Taun L. McKenzie - Hugo MN, US
Marc D. Radcliffe - Newport MN, US
Richard J. Pokorny - Maplewood MN, US
Anthony M. Renstrom - Oakdale MN, US

3M Innovative Properties Company - St. Paul MN

B32B 5/16
B32B 27/32
B32B 27/00

428323, 428220, 428327, 428332, 428336, 428405, 428500

Antireflective films comprising a flexible high refractive index layer that comprises at least 60 wt-% of inorganic nanoparticles, the nanoparticles having a refractive index of at least 1. 60, dispersed in a crosslinked organic material. Also described are surface treated nanoparticles.

8427747, Apr 23, 2013

Apr 22, 2010

12/765019

Ha T. Le - Saint Paul MN, US
Jun-Ying Zhang - Woodbury MN, US
Sergey A. Lamansky - Apple Valley MN, US
Scott M. Tapio - Falcon Heights MN, US
Encai Hao - Woodbury MN, US
David B. Stegall - Austin TX, US
Serena L. Mollenhauer - Saint Paul MN, US

3M Innovative Properties Company - Saint Paul MN

G02B 1/10
G02B 5/28
H01L 27/15

359586, 257 79, 257 98, 362 84, 359589

A light extraction film laminated to a glass substrate for organic light emitting diode (OLED) devices. The light extraction film includes a flexible substantially transparent film, a low index nanostructured layer applied to the film, and a high index planarizing backfill layer applied over the nanostructured layer. A glass substrate is laminated to the flexible substantially transparent film on a side opposite the nanostructured layer and including an ultra-low index region between the film and the glass substrate. The ultra-low index region is used to reduce optical losses occurring with the glass substrate.

8469551, Jun 25, 2013

Oct 20, 2010

12/908804

Martin B. Wolk - Woodbury MN, US
Sergey Lamansky - Apple Valley MN, US
David S. Thompson - West Lakeland MN, US
Zhaohui Yang - North Oaks MN, US
Jun-Ying Zhang - Woodbury MN, US
Encai Hao - Woodbury MN, US
William Blake Kolb - West Lakeland MN, US
Audrey A. Sherman - Saint Paul MN, US
Kevin R. Schaffer - Woodbury MN, US

3M Innovative Properties Company - Saint Paul MN

F21V 3/00
F21V 5/00

36231102, 36231101, 36231103, 362257, 362317, 362351, 362360, 313112, 313504, 313506, 313512

Optical films for enhancing light extraction from self-emissive pixelated OLEDs, without introducing significant pixel blur, are disclosed. The extraction films include a flexible carrier film, and a first and second layer carried by the carrier film. The first layer has a nanovoided morphology, includes a polymer binder, and may have a refractive index less than 1. 35 or 1. 3. An embedded structured surface of light extraction elements is formed between the first and second layers. The extraction film includes a major coupling surface for attachment to an outer surface of the light source. The film is configured such that a land portion between the structured surface and the major coupling surface is thinner than a specified amount, e. g. , less than 50, 25, or 10 microns, or less than a thickness of the carrier film.

8512464, Aug 20, 2013

Nov 16, 2010

12/947252

Guy D. Joly - Shoreview MN, US
Nathan E. Schultz - Lakeland MN, US
Encai Hao - Woodbury MN, US

3M Innovative Properties Company - St. Paul MN

C09D 1/00
C07C 69/52
C07C 229/38

10628719, 560125

The present disclosure relates to surface-modified zirconia nanoparticles, methods for making and using the same, and high index of refraction films made therefrom. The provided zirconia nanoparticles are surface modified with ligands that include N-hydroxyurea functionalities. The provided ligands also can contain compatibilizing groups that allow the provided surface-modified zirconia nanoparticles to be incorporated into an organic matrix. High index of refraction films can be made using these organic matrices.

8534849, Sep 17, 2013

Apr 15, 2010

12/760738

William D. Coggio - Hudson WI, US
John S. Huizinga - White Bear Lake MN, US
Michael L. Steiner - New Richmond WI, US
Robert F. Watkins - White Bear Lake MN, US
Encai Hao - Woodbury MN, US
William B. Kolb - West Lakeland MN, US
Peiwang Zhu - Woodbury MN, US
Michael Benton Free - St. Paul MN, US
Brant U. Kolb - Afton MN, US
Kui Chen-Ho - Woodbury MN, US
Paul E. Humpal - Stillwater MN, US
Kenneth L. Smith - White Bear Lake MN, US
Scott M. Tapio - Falcon Heights MN, US

3M Innovative Properties Company - St. Paul MN

G02B 5/124

359530, 428161

Retroreflecting optical constructions are disclosed. A disclosed retroreflecting optical construction includes a retroreflecting layer that has a retroreflecting structured major surface, and an optical film that is disposed on the retroreflecting structured major surface of the retroreflecting layer. The optical film has an optical haze that is not less than about 30%. Substantial portions of each two neighboring major surfaces in the retroreflecting optical construction are in physical contact with each other.

8538224, Sep 17, 2013

Apr 22, 2010

12/765014

Sergey A. Lamansky - Apple Valley MN, US
Terry L. Smith - Roseville MN, US
Jun-Ying Zhang - Woodbury MN, US
Leslie A. Todero - West Saint Paul MN, US
Encai Hao - Woodbury MN, US
Ha T. Le - Saint Paul MN, US
Ding Wang - Austin TX, US
Fei Lu - Woodbuty MN, US
Shoichi Masuda - Tokyo, JP

3M Innovative Properties Company - Saint Paul MN

G02B 6/10
H01J 1/62

385131, 313494

A light extraction film having internal nanostructures and external microstructures for organic light emitting diode (OLED) devices. The light extraction film includes a flexible substantially transparent film, a low index nanostructured layer applied to the film, and a high index planarizing backfill layer applied over the nanostructured layer. External optical microstructures are applied to the flexible substantially transparent film on a side opposite the nanostructured layer to enhance light extraction from the OLED devices while providing for a more uniform luminance distribution.

8547015, Oct 1, 2013

Oct 20, 2010

12/908798

Martin B. Wolk - Woodbury MN, US
Sergey Lamansky - Apple Valley MN, US
William Blake Kolb - West Lakeland MN, US
Encai Hao - Woodbury MN, US
Jun-Ying Zhang - Woodbury MN, US
David S. Thompson - West Lakeland MN, US
Vivan W. Jones - Woodbury MN, US
Kevin R. Schaffer - Woodbury MN, US
Audrey A. Sherman - Saint Paul MN, US
Zhaohui Yang - North Oaks MN, US
Leslie A. Todero - Saint Paul MN, US

3M Innovative Properties Company - Saint Paul MN

H05B 33/00

313512, 313503

Optical films for enhancing light extraction from self-emissive light sources such as bottom-emitting or top-emitting OLEDs are disclosed. The extraction films typically include a flexible carrier film, and a first and second layer carried by the carrier film. The first or second layer has a nanovoided morphology and includes a polymer binder, and may also have a refractive index less than 1. 35 or 1. 3. An embedded structured surface of light extraction elements is formed between the first and second layers. The light extraction elements may be primarily diffractive elements adapted to be disposed within an evanescent zone of the OLED, or they may be primarily refractive elements adapted to be disposed outside the evanescent zone. The extraction film may also include a third layer, and a second embedded structured surface may be formed between the third layer and the first layer.

8569537, Oct 29, 2013

Oct 26, 2012

13/661086

Nathan E. Schultz - Lakeland MN, US
Encai Hao - Woodbury MN, US

3M Innovative Properties Company - St. Paul MN

C07C 275/64
C07C 69/52
C09D 1/00
C07C 229/38

560115, 560222, 560125, 10628719

The present disclosure relates to surface-modified zirconia nanoparticles, methods for making and using the same, and high index of refraction films made therefrom. The provided zirconia nanoparticles are surface modified with ligands that include N-hydroxyurea functionalities. The provided ligands also can contain compatibilizing groups that allow the provided surface-modified zirconia nanoparticles to be incorporated into an organic matrix. High index of refraction films can be made using these organic matrices.