Method and device for multistate interferometric light modulation
First Claim
Patent Images
1. A light modulator, comprising:
- a first reflector;
a first electrode positioned at a distance from the first reflector; and
a second reflector positioned between the first reflector and the first electrode, the second reflector being movable between an undriven position, a first driven position, and a second driven position, wherein the first driven position is closer to the first reflector than is the undriven position and wherein the second driven position is farther from the first reflector than is the undriven position;
wherein the first reflector comprises a second electrode configured to drive the second reflector towards the first driven position, and wherein the first electrode is configured to drive the second reflector towards the second driven position.
3 Assignments
0 Petitions
Accused Products
Abstract
A multi-state light modulator comprises a first reflector. A first electrode is positioned at a distance from the first reflector. A second reflector is positioned between the first reflector and the first electrode. The second reflector is movable between an undriven position, a first driven position, and a second driven position, each having a corresponding distance from the first reflector. In one embodiment, the three positions correspond to reflecting white light, being non-reflective, and reflecting a selected color of light. Another embodiment is a method of making the light modulator. Another embodiment is a display including the light modulator.
541 Citations
26 Claims
-
1. A light modulator, comprising:
-
a first reflector; a first electrode positioned at a distance from the first reflector; and a second reflector positioned between the first reflector and the first electrode, the second reflector being movable between an undriven position, a first driven position, and a second driven position, wherein the first driven position is closer to the first reflector than is the undriven position and wherein the second driven position is farther from the first reflector than is the undriven position; wherein the first reflector comprises a second electrode configured to drive the second reflector towards the first driven position, and wherein the first electrode is configured to drive the second reflector towards the second driven position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method of fabricating a multistate light modulator, comprising:
-
forming a first reflector; forming a first electrode positioned at a distance from the first reflector; and forming a second reflector positioned between the first reflector and the first electrode, the second reflector movable between an undriven position, a first driven position, and a second driven position, wherein the first driven position is closer to the first reflector than is the undriven position and wherein the second driven position is farther from the first reflector than is the undriven position; wherein forming the first reflector comprises forming a second electrode configured to drive the second reflector towards the first driven position, and wherein the first electrode is configured to drive the second reflector towards the second driven position. - View Dependent Claims (12, 13, 14)
-
-
15. A display comprising a plurality of display elements, each of the display elements comprising:
-
a first reflective member; a first conductive member positioned at a distance from the first reflective member; and a second reflective member positioned between the first reflective member and the first conductive member, the second reflective member being movable between an undriven position, a first driven position, and a second driven position, wherein the first driven position is closer to the first reflective member than is the undriven position and wherein the second driven position is farther from the first reflective member than is the undriven position; wherein the first reflective member comprises a second conductive member configured to drive the second reflective member towards the first driven position, and wherein the first conductive member is configured to drive the second reflective member towards the second driven position. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
-
Specification