US 8,237,346 B2 · Field emission display with antireflective layer

Abstract

It is an object of the present invention to provide a PDP and an FED with excellent visibility and a high level of reliability that each have an antireflective function by which reflection of external light can be reduced. A plurality of adjacent pyramidal-shaped projections and an antireflective layer equipped with a covering film that covers the projections are provided. The reflection of light is prevented by the index of refraction of incident light from external being changed by a pyramid, which is a physical shape, projecting out toward an external side (atmosphere side) of a substrate that is to be used as a display screen as well as by the covering film used to cover the projections being formed of a material that has a higher index of refraction than the index of refraction of the pyramidal projection.

Claims14

Dependent claims

A field emission display comprising:

a first substrate provided with an electron emitter;
a second substrate opposed to the first substrate, the second substrate provided with an electrode;
a phosphor layer provided in contact with the electrode;
and
an antireflective layer provided over an outer side of the second substrate,
wherein the second substrate has a light-transmitting property,
wherein the antireflective layer comprises a plurality of pyramidal projections that lie adjacent to each other with a space,
wherein each of the plurality of pyramidal projections is covered by a covering film, and
wherein an index of refraction of the covering film is higher than an index of refraction of the pyramidal projection.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application

13/275,877Filed 18 Oct 2011 · division

Priority

JP 2006-3282655 Dec 2006

Published

US 2012/0032581 A19 Feb 2012

Granted

7 Aug 2012

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

H01J 11/12
AC-PDPs with at least one main electrode being out of contact with the plasma: with main electrodes provided on both sides of the discharge space
H01J 11/44
Vessels, containers or parts thereof, e.g. substrates: optical arrangements or shielding arrangements, e.g. filters, black matrices, light…
H01J 31/123
With luminescent screen: flat display tubes
H01J 2211/442
Optical arrangements or shielding arrangements, e.g. filters or lenses: light reflecting means; Anti-reflection means

Field emission display with antireflective layer

Life of this patent

Field emission display with antireflective layer

Life of this patent

Abstract

Claims14