Eric B Kreit

US Patent:

20120168309, Jul 5, 2012

Filed:

Aug 13, 2010

Appl. No.:

13/389726

Inventors:

Jason Heikenfeld - Cincinnati OH, US
Manjeet Dhindsa - Eindhoven, NL
Eric Kreit - Cincinnati OH, US

Assignee:

UNIVERSITY OF CINCINNATI - Cincinnati OH

International Classification:

B01D 61/42

US Classification:

204518, 204627

Abstract:

Electrowetting and electrofluidic devices and methods. The device includes a hydrophobic channel formed between first and second substrates and a polar fluid and a non-polar fluid contained in the channel. An electrode with a dielectric layer is electrically connected to a voltage source. A Laplace barrier within the hydrophobic channel defines a fluid pathway that is open to the movement of the polar fluid within the channel. The polar fluid moves to a first position when the voltage source is biased at a first voltage that is less than or equal to a threshold voltage. The polar fluid moves to a second position when the voltage source is biased with a second voltage that is greater than the first voltage.

US Patent:

20120154886, Jun 21, 2012

Filed:

Aug 13, 2010

Appl. No.:

13/389730

Inventors:

Jason Heikenfeld - Cincinnati OH, US
Eric Kreit - Cincinnati OH, US
Shu Yang - Cincinnati OH, US

Assignee:

UNIVERSITY OF CINCINNATI - Cincinnati OH

International Classification:

G02B 26/02
G03F 7/20

US Classification:

359228, 430320

Abstract:

Electrofluidic and electrowetting display pixels, electrofluidic and electrowetting displays, and methods of operating electrofluidic and electrowetting display pixels. The pixel includes a hydrophobic channel formed between first and second substrates and containing a polar fluid and a non-polar fluid, of which at least one is visible through at least one substrate. An electrode with a dielectric is electrically connected to a voltage source. A Laplace barrier defines a fluid pathway for fluid movement in the channel. The polar fluid moves a first position when the voltage source is biased at a first voltage of less than or equal to a threshold voltage to provide a first display state. The polar fluid moves to a second position when the voltage source is biased with a second voltage, greater than the first voltage, to provide a second display state.