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US 6,842,279 B2Granted
Illumination system for nonemissive electronic displays
AssigneeE Ink Corporation
InventorKarl R. Amundson
Life of this patent
Estimating the term…
Abstract
A frontlighting illumination system for selectively illuminating a nonemissive electronic display includes display elements in communication with at least one light source. The electronic display includes a nonemissive electro-optic medium; and a light transmissive element. Light transmitted through the light transmissive element illuminates the display medium. The propagation of light that is directed through the light transmissive element towards the microencapsulated electrophoretic display medium is substantially undeflected at the interface between the surface of the light transmissive element and the microencapsulated electrophoretic display medium. A reflector is included for directing light from the light source through the light transmissive element.
Claims95
An electronic display, comprising:
- a nonemissive electro-optic display medium comprising a binder phase;
- and
- a light transmissive element having a first surface, the first surface adjacent the nonemissive electro-optic display medium, wherein the propagation of light directed through the light transmissive element towards the nonemissive electro-optic display medium is substantially undeflected at an interface between the first surface of the light transmissive element and the nonemissive electro-optic display medium, wherein the nonemissive electro-optic display medium comprises a binder phase having a first index of refraction and wherein the light transmissive element has a second index of refraction, the second index of refraction being substantially equal to the first index of refraction.
An electronic display, comprising:
- a nonemissive electro-optic display, medium;
- and
- a light transmissive element, comprising:
- a first surface, the first surface adjacent the nonemissive electro-optic display medium, wherein the propagation of light directed through the light transmissive element towards the nonemissive electro-optic display medium is substantially undeflected at an interface between the first surface of the light transmissive element and the nonemissive electro-optic display medium;
- and
- a second surface opposite the first surface, the second surface comprising a reflective coating for internal reflection of light towards the nonemissive electro-optic display medium.
3 more elements
An electronic display comprising:
- a nonemissive electro-optic display medium;
- a light transmissive element having a first surface, the first surface adjacent the nonemissive electro-optic display medium, wherein the propagation of light directed through the light transmissive element towards the nonemissive electro-optic display medium is substantially undeflected at an interface between the first surface of the light transmissive element and the nonemissive electro-optic display medium;
- and
- a substantially transparent substrate disposed between the light transmissive element and the nonemissive electro-optic display medium.
1 more element
An electronic display, comprising:
- a nonemissive electro-optic display medium comprising a binder phase;
- and
- a light transmissive element, wherein the light transmissive element comprises:
- a first component having a first surface adjacent the nonemissive electro-optic display medium, wherein the propagation of light directed through the light transmissive element towards the nonemissive electro-optic display medium is substantially undeflected at an interface between the first surface of the light transmissive element and the nonemissive electro-optic display medium;
- and
- a second component having a second surface, wherein the second surface mates with the first surface so that the first component and the second component form a lens at the interface therebetween for facilitating substantially uniform illumination of the nonemissive electro-optic medium.
3 more elements
An electronic display, comprising:
- a nonemissive electro-optic display medium;
- a light transmissive element having a first surface adjacent the nonemissive electro-optic display medium, wherein the propagation of light directed through the light transmissive element towards the nonemissive electro-optic display medium is substantially undeflected at an interface between the first surface of the light transmissive element and the nonemissive electro-optic display medium;
- and
- a light source for generating light for transmission through the light transmissive element, the light source in optical communication with the light transmissive element, wherein the light source is coupled to a photodetector.
1 more element
An electronic display, comprising:
- a nonemissive electro-optic display medium;
- a light transmissive element having a first surface, the first surface adjacent the nonemissive electro-optic display medium, wherein the propagation of light directed through the light transmissive element towards the nonemissive electro-optic display medium is substantially undeflected at an interface between the first surface of the light transmissive element and the nonemissive electro-optic display medium;
- a light source for generating light for transmission through the light transmissive element, the light source in optical communication with the light transmissive element;
- and
- a reflector for directing light from the light source through the light transmissive element.
2 more elements
An electronic display, comprising:
- a nonemissive electro-optic display medium;
- a light transmissive element having a first surface, the first surface adjacent the nonemissive electro-optic display medium;
- a light source in optical communication with the light transmissive element;
- a reflector for directing light from the light source through the light transmissive element, the reflector configured to facilitate substantially uniform illumination of the nonemissive electro-optic display medium.
1 more element
Dependencies are inferred from the claim text.