Optical film laminate used for continuous lamination to panel component

Patent metadata

Field	Value
Publication number	US-10578778-B2
Application number	US-201816179835-A
Country	US
Kind code	B2
Filing date	Nov 2, 2018
Priority date	Mar 24, 2015
Publication date	Mar 3, 2020
Grant date	Mar 3, 2020

Abstract

A continuous web of optical film laminate comprising, an optical film comprising a first substrate and an adhesive layer on the first substrate, a releasable film comprising a second substrate and a releasably treated layer on the second substrate, the releasably treated layer being in contact with the adhesive layer, a first conductive layer between the first substrate and the adhesive layer, and a second conductive layer between the second substrate and the releasably treated layer. The first conductive layer and the second conductive layer comprise a static electrification prevention material, such that the optical film with the first conductive layer, and the releasable film with the second conductive layer, both have a sheet resistance of 1012 Ω/sq or less.

First claim

The invention claimed is:

1. A continuous web of optical film laminate, comprising:
a continuous web of optical film comprising a first substrate and an adhesive layer on the first substrate;
a continuous web of releasable film comprising a second substrate and a releasably treated layer on the second substrate, the releasably treated layer being in contact with the adhesive layer;
a first conductive layer between the first substrate and the adhesive layer; and
a second conductive layer between the second substrate and the releasably treated layer,
wherein the first conductive layer and the second conductive layer each comprises a static electrification prevention material, such that the optical film with the first conductive layer, and the releasable film with the second conductive layer, both have a sheet resistance of 10 12 Ω/sq or less, and
wherein the first conductive layer is not an electrode layer.

2. The continuous web of optical film laminate as defined in claim 1 , wherein the static electrification prevention material is any one of ionic surface-active agent including cationic or anionic agent, conductive polymer, or metal oxide including tin oxide or antimony oxide.

3. A wound roll comprising the continuous web of optical film laminate as defined in claim 1 .

4. A feeding roll for a RTP lamination apparatus, wherein the feeding roll is formed by slitting and winding the wound roll defined in claim 3 to a width corresponding to a long side or a short side of panel components to be used for the RTP lamination apparatus.

5. A continuous web of optical film laminate, comprising:
a continuous web of optical film comprising a first substrate, an adhesive layer on the first substrate and a conductive layer between the first substrate and the adhesive layer; and
a continuous web of releasable film comprising a releasably treated layer in contact with the adhesive layer, and a second substrate provided with a conductive function, the conductive function of the second substrate is provided on the releasably treated layer side,
wherein the conductive layer and the second substrate provided with the conductive function each comprises a static electrification prevention material such that the optical film with the conductive layer and the releasable film with the second substrate provided with the conductive function both have a sheet resistance of 10 12 Ω/sq or less, and
wherein the first conductive layer is not an electrode layer.

6. The continuous web of optical film laminate as defined in claim 5 , wherein the static electrification prevention material is any one of ionic surface-active agent including cationic or anionic agent, conductive polymer, or metal oxide including tin oxide or antimony oxide.

7. The continuous web of optical film laminate as defined in claim 5 , wherein the continuous web of releasable film is a polyethylene terephthalate (PET) resin film including a static electrification prevention material.

8. The continuous web of optical film laminate as defined in claim 7 , wherein the static electrification prevention material is any one of ionic surface-active agent including cationic or anionic agent, conductive polymer, or metal oxide including tin oxide or antimony oxide.

9. A wound roll comprising the continuous web of optical film laminate as defined in claim 5 .

10. A feeding roll for a RTP lamination apparatus, wherein the feeding roll is formed by slitting and winding the wound roll defined in claim 9 to a width corresponding to a long side or a short side of panel components to be used for the RTP lamination apparatus.

11. A continuous web of optical film laminate, comprising:
a continuous web of optical film comprising a first substrate and a conductive adhesive layer on the first substrate;
a continuous web of releasable film comprising a second substrate, a releasably treated layer on the second substrate, the releasably treated layer being in contact with the conductive adhesive layer; and
a conductive layer between the second substrate and the releasably treated layer,
wherein the conductive adhesive layer and the conductive layer each comprises a static electrification prevention material such that the optical film with the conductive adhesive layer and the releasable film with the conductive layer both have a sheet resistance of 10 12 Ω/sq or less, and
wherein the conductive adhesive layer is not an electrode layer.

12. The continuous web of optical film laminate as defined in claim 11 , wherein the conductive adhesive layer is an acrylic adhesive layer including a static electrification prevention material.

13. The continuous web of optical film laminate as defined in claim 12 , wherein the static electrification prevention material is any one of ionic surface-active agent including cationic or anionic agent, conductive polymer, or metal oxide including tin oxide or antimony oxide.

14. The continuous web of optical film laminate as defined in claim 11 , wherein the conductive layer comprises a static electrification prevention material.

15. The continuous web of optical film laminate as defined in claim 14 , wherein the static electrification prevention material is any one of ionic surface-active agent including cationic or anionic agent, conductive polymer, or metal oxide including tin oxide or antimony oxide.

16. A wound roll comprising the continuous web of optical film laminate as defined in claim 11 .

17. A feeding roll for a RTP lamination apparatus, wherein the feeding roll is formed by slitting and winding the wound roll defined in claim 16 to a width corresponding to a long side or a short side of panel components to be used for the RTP lamination apparatus.

18. A continuous web of optical film laminate, comprising:
a continuous web of optical film comprising a first substrate and a conductive adhesive layer on the first substrate; and
a continuous web of releasable film comprising a releasably treated layer in contact with the conductive adhesive layer and a second substrate having a conductive function, the conductive function of the second substrate being on the releasably treated layer side,
wherein the conductive adhesive layer and the second substrate having the conductive function each comprises a static electrification prevention material such that the optical film with the conductive layer and the releasable film with the second substrate having the conductive function both have a sheet resistance of 10 12 Ω/sq or less, and
wherein the conductive adhesive layer is not an electrode layer.

19. The continuous web of optical film laminate as defined in claim 18 , wherein the conductive adhesive layer is an acrylic adhesive layer including the static electrification prevention material.

20. The continuous web of optical film laminate as defined in claim 19 , wherein the static electrification prevention material is any one of ionic surface-active agent including cationic or anionic agent, conductive polymer, or metal oxide including tin oxide or antimony oxide.

21. The continuous web of optical film laminate as defined in claim 18 , wherein the continuous web of releasable film is a polyethylene terephthalate (PET) resin film including a static electrification prevention material.

22. The continuous web of optical film laminate as defined in claim 21 , wherein the static electrification prevention material is any one of ionic surface-active agent including cationic or anionic agent, conductive polymer, or me

Assignees

• Nitto Denko Corp

Inventors

• Morimoto Yu
• Toyama Yusuke
• Ishii Takaaki
• Kitada Kazuo
• Hashimoto Satoshi
• Nagura Akihiro

Classifications

• B32B2457/202

  LCD, i.e. liquid crystal displays · CPC title

• B32B27/00 Primary

  Layered products comprising {a layer of} synthetic resin {(fibrous or filamentary layer made of a synthetic resin B32B5/02; particulate layer made of a synthetic resin B32B5/16; foamed layer made of a synthetic resin B32B5/18)} · CPC title

• G02B1/16 Primary

  having an anti-static effect, e.g. electrically conducting coatings · CPC title

• G02F2202/28

  Adhesive materials or arrangements · CPC title

• G02B5/3033

  in the form of a thin sheet or foil, e.g. Polaroid · CPC title