Abstract: A transflective display device has a viewing side (7) and a rear side (8) and comprises a plurality of electrowetting elements (2) having a first support plate (5) facing the viewing side and a second support plate (6) facing the rear side. Each electrowetting element comprises a space (10) between the first support plate and the second support plate and includes a first fluid (11) and a second fluid (12) immiscible with each other. The second fluid absorbs at least a part of the optical spectrum. The position of the second fluid is controllable to cover a predetermined area (30) of the cross-section (29) of the space in the plane of the second support plate. A structured reflector (18) is arranged on the second support plate, comprising within the cross-section an area (33, 34) transparent for light incident from the rear side and an area (35, 36) reflective for light incident from the viewing side.
Type:
Application
Filed:
June 1, 2007
Publication date:
November 19, 2009
Applicant:
LIQUAVISTA B.V.
Inventors:
Bokke Johannes Feenstra, Roy Van Dijk, Andrea Giraldo, Robert A. Hayes
Abstract: An optical switch, e.g., a display device based on layer break up or layer displacement having at least two different states, in which one of the fluids, e.g., oil in a first state, adjoins at least a first support plate and, in the second state, the other fluid at least partly adjoins the first support plate, in which picture elements are separated by areas having a hydrophilic surface.
Type:
Grant
Filed:
May 13, 2004
Date of Patent:
May 5, 2009
Assignee:
Liquavista B.V.
Inventors:
Robert A. Hayes, Bokke J. Feenstra, Leendert M. Hage, Ronald M. Wolf, Ewout V. Morks, Patrice G. C. Jaulneau, Ivo G. J. Camps, Lucas J. M. Schlangen
Abstract: An exemplary display device based on layer displacement having a perforated white substrate positioned close to a transparent substrate. Layer (fluid) displacement such as oil movement results in the (colored) oil film being pumped in a controlled manner above the white substrate. Fluids of three subtractive colors can be independently pumped to separate spaces. Based on the color strength of the used fluids good color rendition can be obtained for a flow channel thickness of less than 25 microns and therefore a total pixel thickness including the sub pixel reservoirs of less than 200 microns.
Type:
Grant
Filed:
January 12, 2004
Date of Patent:
April 15, 2008
Assignee:
Liquavista B.V.
Inventors:
Robert Andrew Hayes, Bokke Johannes Feenstra, Romaric Mathieu Massard
Abstract: An optical switch, e.g. a display device based on layer break up or layer displcement having at least two different states, in which one of the fluids (5) e.g oil in a first state adjoins at least a first support plate (3) and in the second state the other fluid (6) at least partly adjoins the first support plate, in which picture elements are separated by areas (13) having a hydrophilic surface.
Type:
Application
Filed:
May 13, 2004
Publication date:
June 7, 2007
Applicant:
Liquavista B.V.
Inventors:
Robert Hayes, Bokke Feenstra, Leendert Hage, Ronald Wolf, Ewout Morks, Parice Jaulneau, Ivo Camps, Lucas Schlangen