IP Library Granted Patent US 12679073
Granted Patent B2
US 12679073 · App. 17/423,398 · Granted Jul 14, 2026

Light modulating device and manufacturing method therefor

Inventors: Norio Ishii (Tokyo-to, JP); Nobuyuki Omokawa (Tokyo-to, JP)
Assignee: DAI NIPPON PRINTING CO., LTD.
B32B17/10504B32B17/10036B32B17/10302B32B17/10761B32B17/10899G02F1/133331B32B2457/202G02F2202/28
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Quick Facts
Patent No.
US 12679073
App. No.
17/423,398
Granted
Jul 14, 2026
Kind
B2
Abstract

A manufacturing method for a light modulating device includes preparing a first laminated body including a first glass sheet, preparing a second laminated body in which a second glass sheet, a second interlayer, and a light modulating cell are laminated, and bonding the first laminated body and the second laminated body.

Claims (33)

1 . A light modulating device comprising:

a first laminated body including a first glass sheet, a first interlayer, and a film; and

a second laminated body in which a second glass sheet, a second interlayer, and a light modulating cell are laminated, wherein

the light modulating cell includes a first cell laminated body including a first substrate, a first transparent electrode, and a first alignment layer, a second cell laminated body including a second substrate, a second transparent electrode, and a second alignment layer, and a liquid crystal layer placed between the first cell laminated body and the second cell laminated body,

the first laminated body and the second laminated body are bonded to each other by a sealant,

an air layer is formed between the film of the first laminated body and the light modulating cell of the second laminated body, and the air layer faces and is immediately adjacent to the film of the first laminated body and the light modulating cell of the second laminated body, and

the sealant is formed so as to surround the first interlayer, the second interlayer, and the light modulating cell in plan view.

2 . A light modulating device comprising:

a first laminated body including a first glass sheet, a first interlayer, and a film; and

a second laminated body in which a second glass sheet, a second interlayer, and a light modulating cell are laminated, wherein

the light modulating cell includes a first cell laminated body including a first substrate, a first transparent electrode, and a first alignment layer, a second cell laminated body including a second substrate, a second transparent electrode, and a second alignment layer, and a liquid crystal layer placed between the first cell laminated body and the second cell laminated body,

the first laminated body and the second laminated body are bonded to each other by a peripheral sealant located around the first laminated body and the second laminated body,

an air layer is formed between the film of the first laminated body and the light modulating cell of the second laminated body, and the air layer faces and is immediately adjacent to the film of the first laminated body and the light modulating cell of the second laminated body,

the peripheral sealant is provided outside of an outermost end of the first laminated body and an outermost end of the second laminated body in a direction orthogonal to a direction of stacking of the first laminated body on the second laminated body, and

the peripheral sealant extends to an outermost edge of the light modulating device in the direction of stacking of the first laminated body.

3 . A light modulating device comprising:

a first laminated body including a first glass sheet and a first interlayer;

a second laminated body in which a second glass sheet, a second interlayer, and a light modulating cell are laminated; and

a sealant provided around the first laminated body and the second laminated body, wherein

the light modulating cell includes a first cell laminated body including a first substrate, a first transparent electrode, and a first alignment layer, a second cell laminated body including a second substrate, a second transparent electrode, and a second alignment layer, and a liquid crystal layer placed between the first cell laminated body and the second cell laminated body,

the first laminated body or the second laminated body further includes an optically transparent adhesive film, the first laminated body and the second laminated body are bonded to each other by the optically transparent adhesive film, and the optically transparent adhesive film directly bonds the first laminated body and the light modulating cell of the second laminated body,

the first glass sheet, the optically transparent adhesive film, the light modulating cell, the second interlayer, and the second glass sheet have a same shape in plan view,

the sealant is provided outside of an outermost end of the first laminated body and an outermost end of the second laminated body in a direction orthogonal to a direction of stacking of the first laminated body on the second laminated body, and

the sealant extends to an outermost edge of the light modulating device in the direction of stacking of the first laminated body.

4 . A light modulating device comprising:

a first laminated body including a first glass sheet and a first interlayer;

a second laminated body in which a second glass sheet, a second interlayer, and a light modulating cell are laminated; and

a sealant provided around the first laminated body and the second laminated body, wherein

the light modulating cell includes a first cell laminated body including a first substrate, a first transparent electrode, and a first alignment layer, a second cell laminated body including a second substrate, a second transparent electrode, and a second alignment layer, and a liquid crystal layer placed between the first cell laminated body and the second cell laminated body,

the first laminated body or the second laminated body further includes a thermally adhesive resin layer, the first laminated body and the second laminated body are bonded to each other by the thermally adhesive resin layer, and the thermally adhesive resin layer directly bonds the first laminated body and the light modulating cell of the second laminated body,

the first glass sheet, the thermally adhesive resin layer, the light modulating cell, the second interlayer, and the second glass sheet have a same shape in plan view,

the sealant is provided outside of an outermost end of the first laminated body and an outermost end of the second laminated body in a direction orthogonal to a direction of stacking of the first laminated body on the second laminated body, and

the sealant extends to an outermost edge of the light modulating device in the direction of stacking of the first laminated body.