Method for manufacturing an apparatus using electro-optical modulating material

• US 20050122465A1
• Filed: 09/29/2004
• Published: 06/09/2005
• Est. Priority Date: 09/30/2003
• Status: Abandoned Application

• Current Assignee: Citizen Holdings Co., Ltd. (Citizen Electronics Company Limited)
• Original Assignee: Citizen Watch Co Limited (Citizen Electronics Company Limited)
• Inventors: Togashi, Seigo
• Application Number:
  US10/952,181
• Publication Number:
  US 20050122465A1
• Time in Patent Office: Days
• US Class Current: 349/190
• CPC Class Codes: G02F 1/133351 Manufacturing of individual cells out of a plurality of cells, e.g. by dicing
• CPC Class Codes: G02F 1/133526 Lenses, e.g. microlenses or Fresnel lenses
• CPC Class Codes: G02F 1/133555 Transflectors
• CPC Class Codes: G02F 1/1341 Filling or closing of cells
• CPC Class Codes: G02F 2202/023 curable

Abstract

A method for manufacturing an apparatus using an electro-optical modulating material such as a liquid crystal, comprising the steps of: (a) forming a cell by bonding together a first substrate (10) and a second substrate (20) by a sealing member (17) with a gap (15) yet to be filled with the electro-optical modulating material provided between the first and the second substrate, wherein the first substrate (10) includes at least a first electrode (11) and the second substrate (20) includes at least a second electrode (24) and an optically reflective member (21) having a light-transmitting portion (22); (b) forming a photocuring resin layer (30a) on a surface of the second substrate (20) of the cell opposite from the gap (15); and (c) irradiating the photocuring resin layer (30a) with light projected from below the first substrate (10) and passed through the gap (15), the light-transmitting portion (22), and the second substrate (20), and thereby forming a microlens for converging light, directed into the second substrate (20) toward the gap (15), onto the light-transmitting portion.

Claims

1. A method for manufacturing an apparatus using an electro-optical modulating material, comprising the steps of:

(a) forming a cell by bonding together a first substrate and a second substrate by a sealing member with a gap yet to be filled with said electro-optical modulating material provided between said first and said second substrate, wherein said first substrate includes at least a first electrode and said second substrate includes at least a second electrode and an optically reflective member having a light-transmitting portion;

(b) forming a photocuring resin layer on a surface of said second substrate of said cell opposite from said gap; and

(c) irradiating said photocuring resin layer with light projected from said first substrate and passed through said gap, said light-transmitting portion, and said second substrate, and thereby forming a microlens for converging light, which is directed into said gap passing through said second substrate, onto said light-transmitting portion.

3. A method as claimed in claim 1 or 2, wherein color filters are provided between said first substrate and said second substrate.

4. A method as claimed in claim 1 or 2, wherein the center of a pixel defined by said first electrode on said first substrate and said second electrode on said second substrate is substantially coincident with the center of said light-transmitting portion when viewed in a direction normal to said first substrate.

5. A method as claimed in claim 1 or 2, wherein a plurality of said light-transmitting portions are provided for each pixel defined by said first electrode on said first substrate and said second electrode on said second substrate, and a plurality of said microlenses are formed for said each pixel.

6. A method as claimed in claim 1 or 2, wherein said microlens forming step is followed by the steps of:

(e) providing a first polarizer on a side of said first substrate opposite from said gap; and

(f) providing a second polarizer and a backlight on the same side as said microlens.

2. A method for manufacturing an apparatus using an electro-optical modulating material, comprising the steps of:

(a) forming a cell by bonding together a first substrate and a second substrate by a sealing member with a gap yet to be filled with said electro-optical modulating material provided between said first and said second substrate, wherein said first substrate includes at least a first electrode and said second substrate includes at least a second electrode and an optically reflective member having a light-transmitting portion;

(b) forming a photocuring resin layer on a surface of said second substrate of said cell opposite from said gap;

(c) filling said electro-optical modulating material into said gap and sealing said gap; and

(d) irradiating said photocuring resin layer with light projected from below said first substrate and passed through said gap filled with said electro-optical modulating material, said light-transmitting portion, and said second substrate, and thereby forming a microlens for converging light, which is directed into said gap filled with said electro-optical modulating material passing through said second substrate, onto said light-transmitting portion.

7. A method as claimed in claim 2, wherein said electro-optical modulating material to be filled into said gap is a liquid crystal material.

8. A method as claimed in claim 7 wherein, in the step (d) of forming said microlens by irradiating said photocuring resin layer with light, the amount of said light transmitted for irradiation is controlled by driving said filled liquid crystal by applying a voltage between said first electrode and said second electrode.

9. A method for manufacturing an apparatus using an electro-optical modulating material, comprising the steps of:

(a) forming a plurality of cells by bonding together a first mother substrate and a second mother substrate by a sealing member with a gap yet to be filled with said electro-optical modulating material provided between said first and said second mother substrates, said sealing member comprising a first sealing member provided along edges of said first and second mother substrates and a second sealing member provided so as to enclose each of said cells, wherein said first mother substrate includes a plurality of cell forming portions, each of which includes at least a first electrode, and said second mother substrate includes a plurality of cell forming portions, each of which includes at least a second electrode and an optically reflective member having a light-transmitting portion;

(b) forming a photocuring resin layer on a surface of said second mother substrate opposite from said gap; and

(c) irradiating said photocuring resin layer with light projected from said first mother substrate and passed through said gap, said light-transmitting portion, and said second mother substrate, and thereby forming a microlens for converging light, which is directed into said gap passing through said second mother substrate, onto said light-transmitting portion.

10. A method as claimed in claim 9, wherein a light-blocking member is provided in any portion of said first and second mother substrates other than said cell forming portions so that said microlens will not be formed on said portion.

11. A method as claimed in claim 9, wherein the center of a pixel defined by said first electrode on said first mother substrate and said second electrode on said second mother substrate is substantially coincident with the center of said light-transmitting portion when viewed in a direction normal to said first mother substrate.

12. A method as claimed in claim 9, wherein said first sealing member forms a double seal along a portion of said edges of said mother substrates, and said double seal forms a passage communicating between an outside environment and said gap formed between said first and second mother substrates.

13. A method as claimed in claim 9, wherein said microlens forming step is followed by the step of:

(d) cutting said first and second mother substrates, which contain said plurality of cells with said microlens formed thereon, into rectangular pieces, and injecting said electro-optical modulating material through an injection port formed in said second sealing member and thereafter sealing each of said cells.

14. A method as claimed in claim 13, wherein the step of injecting said electro-optical modulating material and sealing each of said cells is followed by the step of:

(e) cutting said plurality of cells, each filled with said electro-optical modulating material and sealed, into separate individual cells.