Substrate assembly for electrooptical device, method for manufacturing substrate assembly for electrooptical device, electrooptical device, method for manufacturing electrooptical device, and electronic apparatus

• US 20030020863A1
• Filed: 07/26/2002
• Published: 01/30/2003
• Est. Priority Date: 07/27/2001
• Status: Active Grant

• Current Assignee: BOE Technology Group Co., Ltd.
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Otagiri, Yoshihiro, Takizawa, Keiji
• Granted Patent: US 6,850,297 B2
• Time in Patent Office: Days
• US Class Current: 349/149
• CPC Class Codes: G02F 1/133555 Transflectors

Abstract

An optically transmissive layer 212 is formed on a first substrate 211, and a slope surface 212a having a valley in cross section is formed in the optically transmissive layer 212. A reflective layer 213 having a aperture 213h on the slope surface 212a is formed on the optically transmissive layer 212. A color layer 214 is formed on the reflective layer 213. The color layer 214 has a thick portion 214a formed corresponding to the slope surface 212a of the optically transmissive layer 212.

Claims

1. A substrate assembly for an electrooptical device, comprising:

a substrate,

an optically transmissive layer which, arranged on the substrate, has a slope surface inclined with respect to the substrate, and substantially transmits light,

a reflective layer, arranged on the optically transmissive layer, and having an aperture,

wherein the edge of the aperture is placed on the slope surface.

2. A substrate assembly for an electrooptical device according to claim 1, wherein the optically transmissive layer comprises a valley portion formed of the slope surface.

4. A substrate assembly for an electrooptical device according to claim 1, wherein the reflective layer comprises a reflective slope surface inclined with respect to the substrate, and the reflective slope surface is arranged at least on the slope surface of the optically transmissive layer.

5. A substrate assembly for an electrooptical device according to claim 4, wherein the optically transmissive layer comprises a surface parallel with the substrate, and the reflective slope surface of the reflective layer extends over the slope surface of the optically transmissive layer from the parallel surface thereof.

6. A substrate assembly for an electrooptical device according to claim 1, wherein the reflective layer comprises a finely rugged portion for scattering visible light.

7. A substrate assembly for an electrooptical device according to claim 1, further comprising a color layer arranged on the optically transmissive layer.

3. A substrate assembly for an electrooptical device, comprising:

a substrate,

an optically transmissive layer which, arranged on the substrate, has an aperture, and substantially transmits light,

a reflective layer having an aperture overlapping the aperture of the optically transmissive layer,

wherein the optically transmissive layer has a slope surface, inclined with respect to the substrate, around the aperture thereof, and

wherein the edge of the aperture of the reflective layer is placed on the slope surface or within the aperture of the optically transmissive layer on the inside of the slope surface.

8. A substrate assembly for an electrooptical device, comprising:

a substrate,

a reflective layer arranged on the substrate, and having an aperture, and

an optically transmissive layer which, arranged on the reflective layer, has a slope surface inclined with respect to the substrate, and substantially transmits light,

wherein the slope surface is placed over the edge of the aperture, and

wherein the substrate assembly further comprises a color layer on the optically transmissive layer.

9. A substrate assembly for an electrooptical device, comprising:

a substrate,

a reflective layer arranged on the substrate, and having an aperture, and

an optically transmissive layer, arranged on the reflective layer, has an aperture overlapping the aperture of the reflective layer, and substantially transmits light,

wherein the optically transmissive layer comprises a slope surface, inclined with respect to the substrate, around the aperture thereof,

wherein the edge of the aperture of the reflective layer is placed on the slope surface or within the aperture of the optically transmissive layer on the inside of the slope surface, and

wherein the substrate assembly comprises a color layer on the optically transmissive layer.

10. A method for manufacturing a substrate assembly for an electrooptical device, comprising:

a step of forming, on a substrate, an optically transmissive layer which substantially transmits light,

a step of forming a slope surface, inclined with respect to the substrate, as a portion of the optically transmissive layer by causing the optically transmissive layer to become soft enough to flow, and

a step of forming, on the optically transmissive layer, a reflective layer having an aperture,

wherein the aperture is opened in the step of forming the reflective layer so that the edge of the aperture is placed on the slope surface.

20. A method for manufacturing an electrooptical device, comprising the method for manufacturing a substrate assembly for an electrooptical device according to claim 10.

11. A method for manufacturing a substrate assembly for an electrooptical device, comprising:

a step of forming, on a substrate, an optically transmissive layer which substantially transmits light and has an aperture,

a step of forming a slope surface, inclined with respect to the substrate, around the edge of the aperture by causing the optically transmissive layer to become soft enough to flow, and

a step of forming, on the optically transmissive layer, a reflective layer having an aperture overlapping the aperture of the optically transmissive layer,

wherein the aperture is formed in the step of forming the reflective layer so that the edge of the aperture of the reflective layer is placed on the slope surface or within the aperture of the optically transmissive layer on the inside of the slope surface.

12. A method for manufacturing a substrate assembly for an electrooptical device, comprising:

a step of forming an underlayer on a portion of a substrate,

a step of forming, on the underlayer, an optically transmissive layer which substantially transmits light and has a slope surface inclined with respect to the substrate,

a step of forming, on the optically transmissive layer, a reflective layer having an aperture,

wherein the slope surface is formed close to the edge of the underlayer in the step of forming the optically transmissive layer, and

wherein the aperture is formed in the reflective layer in the step of forming the reflective layer so that the edge of the aperture is placed on the slope surface.

13. A method for manufacturing a substrate assembly for an electrooptical device according to claim 12, wherein a rugged portion is formed on the surface of the underlayer in the step of forming the underlayer,

a rugged portion is formed on the surface of the optically transmissive layer by forming the optically transmissive layer on the rugged portion of the underlayer in the step of forming the optically transmissive layer, and

a finely rugged portion for scattering visible light is formed on the reflective layer by forming the reflective layer on the rugged portion of the optically transmissive layer in the step of forming the reflective layer.

14. A method for manufacturing a substrate assembly for an electrooptical device, comprising:

a step of forming, on a substrate, a reflective layer having an aperture,

a step of forming an optically transmissive layer which substantially transmits light and has, on the reflective layer, a slope surface inclined with respect to the substrate, and

a step of forming a color layer on the optically transmissive layer,

wherein the slope surface is placed over the edge of the aperture in the step of forming the optically transmissive layer.

15. A method for manufacturing a substrate assembly for an electrooptical device, comprising:

a step of forming, on a substrate, a reflective layer having an aperture,

a step of forming an optically transmissive layer which substantially transmits light and has an aperture which overlaps the aperture of the reflective layer, and

a step of forming a color layer on the optically transmissive layer,

wherein the slope surface inclined with respect to the substrate is formed around the edge of the aperture in the optically transmissive layer in the step of forming the optically transmissive layer so that the slope surface of the optically transmissive layer or the aperture of the optically transmissive layer on the inside of the slope surface is placed over the edge of the aperture of the reflective layer.

16. An electrooptical device comprising:

a substrate,

an optically transmissive layer which, arranged on the substrate, has a slope surface inclined with respect to the substrate, and substantially transmits light,

a reflective layer, arranged on the optically transmissive layer, and having an aperture,

wherein the edge of the aperture is placed on the slope surface.

21. Electronic apparatus comprising an electrooptical device according to claim 16 and control means for controlling the electrooptical device.

17. An electrooptical device comprising:

a substrate,

an optically transmissive layer which, arranged on the substrate, has an aperture, and substantially transmits light,

a reflective layer having an aperture overlapping the aperture of the optically transmissive layer,

wherein the optically transmissive layer has a slope surface, inclined with respect to the substrate, around the aperture thereof and

wherein the edge of the aperture of the reflective layer is placed on the slope surface or within the aperture of the optically transmissive layer on the inside of the slope surface.

18. An electrooptical device comprising:

a substrate,

a reflective layer arranged on the substrate, and having an aperture, and

an optically transmissive layer which, arranged on the reflective layer, has a slope surface inclined with respect to the substrate, and substantially transmits light,

wherein the slope surface is placed over the edge of the aperture, and

wherein the substrate assembly further comprises a color layer on the optically transmissive layer.

19. An electrooptical device comprising:

a substrate,

a reflective layer arranged on the substrate, and having an aperture, and

an optically transmissive layer which, arranged on the reflective layer, has an aperture overlapping the aperture of the reflective layer, and substantially transmits light,

wherein the optically transmissive layer comprises a slope surface, inclined with respect to the substrate, around the aperture thereof,

wherein the edge of the aperture of the reflective layer is placed on the slope surface or within the aperture of the optically transmissive layer on the inside of the slope surface, and

wherein the substrate assembly comprises a color layer on the optically transmissive layer.