Electro-optical apparatus having a light-emitting element and wavelength correcting unit of plurality of liquid crystalline organic layers

• US 6,882,400 B2
• Filed: 10/30/2002
• Issued: 04/19/2005
• Est. Priority Date: 10/30/2001
• Status: Expired due to Term

• Current Assignee: BOE Technology Group Co., Ltd.
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Kobayashi, Hidekazu
• Primary Examiner(s): CHOWDHURY, TARIFUR RASHID
• Application Number:
  US10/283,070
• Publication Number:
  US 20030081315A1
• Time in Patent Office: 902 Days
• Field of Search: 349/69, 349/117, 349/123, 349/153, 349/138, 349/183, 359/485, 359/495, 313/506
• US Class Current: 349/153
• CPC Class Codes: H10K 50/8445 multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers
• CPC Class Codes: H10K 50/86 Arrangements for improving contrast, e.g. preventing reflection of ambient light
• CPC Class Codes: H10K 59/8731 multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers

Abstract

The invention reduces or suppresses outside light reflection without reducing or substantially reducing the light emitting strength from a light-emitting element. An apparatus of the invention includes a light-emitting element. A wavelength correcting unit, a planar polarization beam splitter, and a polarizing plate are also included.

Claims

1. An electro-optical apparatus, comprising:

a substrate;

a light-emitting element formed above the substrate;

a wavelength correcting unit arranged above the light-emitting element with the light-emitting element located between the substrate and the wavelength correcting unit, the wavelength correcting unit being formed by laying up a plurality of liquid crystalline organic compound layers, in each of which chiral dopant is orientated in a predetermined direction, so that the chiral dopant orientating direction of each layer is displaced by a predetermined angle from each other;

a planar polarization beam splitter arranged above the wavelength correcting unit; and

a polarizing plate arranged above the planar polarization beam splitter.

2. The electro-optical apparatus according to claim 1, on a surface of the polarizing plate, at least one of nonglaring treatment and reflection-reducing treatment being performed.

3. An electronic instrument, comprising:

the electro-optical apparatus according to claim 1.

4. A manufacturing method of an electro-optical apparatus with a light-emitting element formed above a substrate, comprising:

arranging a wavelength correcting unit above the light-emitting element with the light-emitting element located between the substrate and the wavelength correcting unit;

arranging a planar polarization beam splitter above the wavelength correcting unit;

arranging a polarizing plate above the planar polarization beam splitter; and

forming the wavelength correcting unit by laying up a plurality of liquid crystalline organic compound layers, in each of which chiral dopant is orientated in a predetermined direction, so that the chiral dopant orientating direction of each layer is displaced by a predetermined angle from each other.

5. The manufacturing method according to claim 4, further including performing at least one of nonglaring treatment and reflection-reducing treatment on a surface of the polarizing plate.