US 7,248,407 B2 · Microlens array sheet of projection screen, and method for manufacturing the same

Abstract

The present invention discloses a microlens array sheet of a projection screen including a lens sheet having a predetermined area, microlenses arranged on one surface of the lens sheet in the horizontal and vertical directions, a black matrix including apertures corresponding to the microlenses, and being adhered to the other surface of the lens sheet, an optical diffusing layer formed on the lens sheet to cover the black matrix, for widening a viewing angle, and a protecting film for protecting the optical diffusing layer. The microlens array sheet of the projection screen is manufactured by using a process for manufacturing a semiconductor device, a reflow process and a plating process for a mold, thereby improving luminance and definition of the projection screen at a low unit cost of production.

Claims25

Dependent claims

A microlens array sheet of a projection screen, comprising:

a lens sheet having a predetermined area;
microlenses arranged on one surface of the lens sheet in the horizontal and vertical directions;
a black matrix including apertures corresponding to the microlenses, and being adhered to the other surface of the lens sheet;
an optical diffusing layer formed on the lens sheet to cover the black matrix, for widening a viewing angle;
and
a protecting film for protecting the optical diffusing layer.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

10/860,032Filed 4 Jun 2004

Priority

KR 10-2003-004126424 Jun 2003

Published

US 2004/0263967 A130 Dec 2004

Granted

24 Jul 2007

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

G02B 3/0031
Characterised by the manufacturing method: replication or moulding, e.g. hot embossing, UV-casting, injection moulding
G03B 21/602
Characterised by the nature of the surface: lenticular screens
G02B 3/0018
Characterised by the manufacturing method: reflow, i.e. characterized by the step of melting microstructures to form curved surfaces, e.g.…
G02B 3/005
Characterized by the distribution or form of lenses: arranged along a single direction only, e.g. lenticular sheets

Microlens array sheet of projection screen, and method for manufacturing the same

Life of this patent

Microlens array sheet of projection screen, and method for manufacturing the same

Life of this patent

Abstract

Claims25