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1. (WO2001037026) PIXEL STRUCTURE HAVING DEFORMABLE MATERIAL AND METHOD FOR FORMING A LIGHT VALVE

Pub. No.:    WO/2001/037026    International Application No.:    PCT/IB2000/001608
Publication Date: Sat May 26 01:59:59 CEST 2001 International Filing Date: Sat Nov 04 00:59:59 CET 2000
IPC: G02B 5/18
G02B 26/08
Applicants: NOKIA CORPORATION
NOKIA INC.
Inventors: LEVOLA, Tapani
Title: PIXEL STRUCTURE HAVING DEFORMABLE MATERIAL AND METHOD FOR FORMING A LIGHT VALVE
Abstract:
A light valve capable of operating in an 'off' state for reflecting lignt and in an 'on' state for diffracting and reflecting light. The valve includes a semiconductor substrate having a plurality of electrodes formed therein for receiving voltages and for generating an electric field in response to the received voltages. A layer of transparent deformable dielectric material is disposed on the reflective electrodes which deforms in response to the generated electric field. When the valve is in its 'on' state, the electric field causes deformities in the dielectric material which diffract incident light reflected off of the valve. In another embodiment, the dielectric material is placed on the reflective electrodes or on a transparent substrate having a transparent electrode formed thereon. The transparent substrate is then disposed in spaced relation from the semiconductor substrate containing the reflective electrodes.