Protective cover for display panel and its use
AssigneeHoya Corporation
InventorsKazuhiro Yamada, Yasuhiro Sakai, Hiroyuki Nakayama, Maki Yamada
Life of this patent
Estimating the term…
Abstract
A protective cover for a display panel, comprising a transparent substrate, and an anti-reflection, transparent medium layer comprising hollow, transparent, fine particles dispersed in a transparent resin matrix and sealed without gap between the a transparent substrate and an image-displaying area of the display panel, the refractive index N1 of the anti-reflection, transparent medium layer and the refractive index Ns of the transparent substrate meeting the following relation (1): No<N1<Ns2 (1), wherein No is the refractive index of air.
Claims10
A protective cover for a liquid crystal module, said protective cover comprising:
- a transparent substrate having a front surface exposed to air;
- an anti-reflection transparent medium layer comprising fine particles, which are both hollow and transparent, being dispersed within a transparent resin matrix, said anti-reflection transparent medium layer positioned behind said transparent substrate;
- wherein said fine particles have a particle size distribution in a range of approximately 0.3-30 μm;
- wherein a refractive index of the transparent resin constituting said transparent resin matrix is 1.45-1.65;
- wherein the amount of said fine particles is 0.1-30% by mass based on the total amount (100% by mass) of said transparent resin matrix and said fine particles;
- wherein said anti-reflection transparent medium layer is positioned in front of an image-displaying area of said liquid crystal module;
- wherein said anti-reflection transparent medium layer is sealed without a gap between said transparent substrate and said image-displaying area of said liquid crystal module such that a first surface of said anti-reflection transparent medium layer contacts said transparent substrate and a second surface of said anti-reflection transparent medium layer contacts said liquid crystal module, and a refractive index N1 of said anti-reflection transparent medium layer and a refractive index Ns of said transparent substrate satisfying the relation:
- No<N1<Ns2;
- and
- wherein No is a refractive index of air.
A protective cover for a liquid crystal module, said protective cover comprising:
- a transparent substrate having a front surface exposed to air;
- an anti-reflection transparent medium layer comprising fine particles, which are both hollow and transparent, being dispersed within a transparent resin matrix, said anti-reflection transparent medium layer positioned behind said transparent substrate;
- wherein said fine particles have a particle size distribution in a range of approximately 0.3-30 μm;
- wherein a refractive index of the transparent resin constituting said transparent resin matrix is 1.45-1.65;
- wherein the amount of said fine particles is 0.1-0.5% by mass based on the total amount (100% by mass) of said transparent resin matrix and said fine particles;
- wherein said anti-reflection transparent medium layer is positioned in front of an image-displaying area of said liquid crystal module;
- wherein said anti-reflection transparent medium layer is sealed without a gap between said transparent substrate and said image-displaying area of said liquid crystal module such that a first surface of said anti-reflection transparent medium layer contacts said transparent substrate and a second surface of said anti-reflection transparent medium layer contacts said liquid crystal module, and a refractive index N1 of said anti-reflection transparent medium layer and a refractive index Ns of said transparent substrate satisfying the relation:
- No<N1<Ns2;
- and
- wherein No is a refractive index of air.
Dependencies are inferred from the claim text.