DIRECT VIEW DISPLAY BASED ON LIGHT DIFFRACTION FROM A DEFORMABLE LAYER

Title:

DIRECT VIEW DISPLAY BASED ON LIGHT DIFFRACTION FROM A DEFORMABLE LAYER

Document Type and Number:

WIPO Patent Application WO2004088714

Kind Code:

A3

Abstract:

A direct view display device based on light reflection and diffraction from a deformable material layer under influence of an electric field. The display device comprises a plurality of pixel cells, each cell has at least a first prism surface to support the deformable material, such that when the electric field is off, a light beam travels through the first prism surface and the deformable material is reflected via total internal reflection through the first prism surface to a second prism surface, whereby the light beam is directed toward a beam blocker. When the electric field is on, the deformable material forms a rippled surface to diffract the encountering light beam, allowing part of the light beam to avoid the beam blocker. A microlens is used for each pixel cell to focus the light beam at the beam blocker.

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Inventors:

SCHRADER MARTIN (FI)
LEVOLA TAPANI (FI)

Application Number:

PCT/IB2004/000766

Publication Date:

April 28, 2005

Filing Date:

March 16, 2004

Export Citation:

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Assignee:

NOKIA CORP (FI)
NOKIA INC (US)
SCHRADER MARTIN (FI)
LEVOLA TAPANI (FI)

International Classes:

G02B26/08; (IPC1-7): G02F1/1335

Foreign References:

JP2000356750A	2000-12-26
US20010004279A1	2001-06-21
US5504597A	1996-04-02

Other References: