Electro-optic device and electronic apparatus

• US 8,896,901 B2
• Filed: 10/30/2013
• Issued: 11/25/2014
• Est. Priority Date: 11/05/2012
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Sugimoto, Yohei, Ito, Atsushi, Yamasaki, Ryosuke, Haruyama, Akihide
• Primary Examiner(s): TRA, TUYEN Q
• Application Number:
  US14/067,766
• Publication Number:
  US 20140126035A1
• Time in Patent Office: 391 Days
• Field of Search: 359245-254, 359265-275, 345/105, 345/107
• US Class Current: 359/245
• CPC Class Codes: G02F 1/133502 Antiglare, refractive index matching layers
• CPC Class Codes: G02F 1/133562 on the viewer side
• CPC Class Codes: G02F 1/133565 inside the LC elements, i.e. between the cell substrates

Abstract

An electro-optic device includes a first substrate, a second substrate, an electro-optic layer which is interposed between the second substrate and the first substrate, and a first translucent film, a second translucent film, and a third translucent film which are disposed between the second substrate and the electro-optic layer and are sequentially formed from the second substrate, in which the refractive index of the second translucent film is larger than the refractive index of the second substrate, is smaller than the refractive index of the first translucent film, and is smaller than the third translucent film. A transmittance of incident light of the electro-optic device is intensified using refractive index matching, interference dimming, and anti-scattering.

Claims

1. An electro-optic device comprising:

a first substrate;

a second substrate;

an electro-optic layer which is interposed between the second substrate and the first substrate; and

a first translucent film, a second translucent film, and a third translucent film which are disposed between the second substrate and the electro-optic layer and are sequentially formed from the second substrate,

wherein the refractive index of the second translucent film is larger than the refractive index of the second substrate, is smaller than the refractive index of the first translucent film, and is smaller than the third translucent film.

2. The electro-optic device according to claim 1 further comprising:

a fourth translucent film between the second substrate and the first translucent film,

wherein the refractive index of the fourth translucent film is larger than the refractive index of the second substrate and is smaller than the refractive index of the first translucent film.

3. The electro-optic device according to claim 2,

wherein the refractive index of the first translucent film and the refractive index of the third translucent film are substantially are the same, and the refractive index of the second translucent film and the refractive index of the fourth translucent film.

4. The electro-optic device according to claim 1 further comprising;

a fifth translucent film on the third translucent film,

wherein the refractive index of the fifth translucent film is larger than the refractive index of the second substrate and is smaller than the refractive index of the third translucent film.

5. The electro-optic device according to claim 4,

wherein the refractive index of the first translucent film and the refractive index of the third translucent film are substantially the same, and the refractive index of the second translucent film and the refractive index of the fifth translucent film are substantially the same.

6. The electro-optic device according to claim 1,

wherein the second translucent film is a silicon oxide film containing boron and phosphorus.

7. The electro-optic device according to claim 1,

wherein the third translucent film is electrically conductive.

8. An electronic apparatus comprising:

the electro-optic device according to claim 1.