Substrate for electro-optical device, electro-optical device, and electronic apparatus

Patent metadata

Field	Value
Publication number	US-10466531-B2
Application number	US-201715848608-A
Country	US
Kind code	B2
Filing date	Dec 20, 2017
Priority date	Sep 30, 2015
Publication date	Nov 5, 2019
Grant date	Nov 5, 2019

Abstract

An opposing substrate as a substrate for an electro-optical device includes a transparent base member and a light shielding portion disposed on a region between pixels on the base member. The light shielding portion includes a first reflective film and a second reflective film that is disposed to overlap the first reflective film and has a reflection rate lower than that of the first reflective film, and a first protective film that covers the first reflective film is provided between the first reflective film and the second reflective film.

First claim

What is claimed is:

1. A substrate for an electro-optical device including a plurality of pixels comprising:
a base member;
a first reflective film disposed over regions between pixels over the base member, the first reflective film including aluminum;
a second reflective film disposed by overlapping the first reflective film, the second reflective film including titanium; and
a first protective film that covers the first reflective film, is provided between the first reflective film and the second reflective film, and is in direct contact with both the first reflective film and the second reflective film.

2. The substrate for an electro-optical device according to claim 1 ,
wherein the first protective film is formed from material having approximately the same refractive rate as the base member, and provided over at least a region including the plurality of pixels on the base member.

3. The substrate for an electro-optical device according to claim 1 ,
wherein the first protective film is formed from a silicon oxide film.

4. The substrate for an electro-optical device according to claim 1 ,
wherein the second reflective film includes an eaves portion protruded from a region on which the first reflective film is provided, in plan view.

5. The substrate for an electro-optical device according to claim 1 ,
wherein the thickness of the second reflective film is equal to or greater than 50 nm.

6. The substrate for an electro-optical device according to claim 1 , further comprising:
a second protective film that covers the second reflective film, and is provided over at least a region including the plurality of pixels.

7. The substrate for an electro-optical device according to claim 6 ,
wherein the first protective film and the second protective film are formed from the same material.

8. An electro-optical device comprising:
the substrate for an electro-optical device according to claim 1 .

9. An electro-optical device comprising:
the substrate for an electro-optical device according to claim 2 .

10. An electro-optical device comprising:
the substrate for an electro-optical device according to claim 3 .

11. An electro-optical device comprising:
the substrate for an electro-optical device according to claim 4 .

12. An electro-optical device comprising:
the substrate for an electro-optical device according to claim 5 .

13. An electro-optical device comprising:
the substrate for an electro-optical device according to claim 6 .

14. An electro-optical device comprising:
the substrate for an electro-optical device according to claim 7 .

15. An electronic apparatus comprising:
the electro-optical device according to claim 8 .

Assignees

• Seiko Epson Corp

Inventors

• Tsuchiya Yutaka
• Ono Takehiro
• Kinoe Yusuke
• Hama Yoshitaka
• Kawakami Yasushi

Classifications

• H04N23/63

  by using electronic viewfinders · CPC title

• G02F1/133502

  Antiglare, refractive index matching layers · CPC title

• G02F2203/12

  spatial light modulator · CPC title

• G02F2203/02

  reflective · CPC title

• G02F2201/50

  Protective arrangements · CPC title