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US 7,420,727 B2Granted
Active matrix electrochromic display
AssigneeNtera Limited
InventorMicheal Cassidy
Life of this patent
Estimating the term…
Abstract
The present invention is an active matrix electrochromic display architecture where the active components are placed on the backplane of the display, thereby maximizing the viewable pixel area. The cathode of the electrochromic pixel is placed on top of the active components, with respect to the viewer, thereby allowing the active components to be as large as desired while not interfering with the viewable area of the pixel.
Claims39
An active matrix electrochromic display device comprising:
- a first electrode comprising:
- a first substrate;
- an active component associated with the first substrate, the active component configured for controlling the electric potential within the electrochromic display device;
- a reflective insulating layer associated with the active component;
- a first conductor associated with the insulating layer, wherein the first conductor is electrically coupled to the active component by way of an operable connection in the insulating layer;
- and
- a semiconducting layer associated with the first conductor, the semiconducting layer having an electrochromophore adsorbed thereto;
- a second electrode comprising:
- a second substrate being substantially transparent;
- a second conductor associated with the second substrate, the second conductor being substantially transparent;
- and
- a substantially transparent semiconducting layer associated with the second conductor;
- and
- an electrolyte between the first and second electrode.
11 more elements
An active matrix electrochromic display device having a plurality of pixels, the device comprising:
- a first electrode comprising:
- a first substrate;
- a plurality of active components associated with the first substrate, one for each pixel, the active components configured for controlling the electric potential within each pixel;
- a reflective insulating layer associated with the plurality of active components and substantially covering the plurality of active components, the reflective insulating layer comprising:
- a plurality of wells, each well comprising:
- an operable connection to a respective active component;
- a substantially transparent conductor associated with each well and electrically coupled to a respective active component by way of an operable connection;
- a semiconducting layer having an electrochromophore adsorbed thereto;
- a second electrode comprising:
- a second substrate being substantially transparent;
- a second conductor associated with the second substrate, the second conductor being substantially transparent;
- and
- a substantially transparent semiconducting layer associated with the second conductor;
- and
- an electrolyte between the first and second electrodes.
12 more elements
An active matrix electrochromic display, the display comprising:
- a backplane associated with a matrix of active components, a reflective layer associated with the matrix of active components, and a plurality of segments of nano-structured film having an electrochromophore adsorbed thereto, each segment associated with an active component;
- a substantially transparent frontplane associated with a nano-structured semiconducting film;
- and
- an electrolyte between the plurality of segments of nano-structured film having an electrochromophore adsorbed thereto associated with the backplane and the nano-structured semiconducting film associated with the frontplane;
- wherein application of an electric potential to a segment of nano-structured film having an electrochromophore adsorbed thereto via an associated active component causes a color change in the electrochromophore visible to the viewer through the substantially transparent frontplane.
2 more elements
Dependencies are inferred from the claim text.