Display, manufacturing method therefor and transparent resin charging material

Patent metadata

Field	Value
Publication number	US-9182625-B2
Application number	US-200913502252-A
Country	US
Kind code	B2
Filing date	Oct 16, 2009
Priority date	Oct 16, 2009
Publication date	Nov 10, 2015
Grant date	Nov 10, 2015

Abstract

A display having high re-workability, a method for producing the display, and a transparent resin filler, are provided. A transparent resin filler ( 5 ), in which a value obtained on multiplying a hardness of an as-cured resin, expressed as Shore E, with a bonding strength, is not greater than 400, is used as a material of a transparent resin layer ( 4 ) to be charged between a picture image display panel ( 2 ) and a front side panel ( 3 ). In case an undesirable situation, such as mixing of foreign matter in the transparent resin layer ( 4 ), has occurred, a re-working member may be moved with ease through a space between the picture image display panel ( 2 ) and the front side panel ( 3 ) to separate picture image display panel ( 2 ) and the front side panel ( 3 ) from each other.

First claim

The invention claimed is:

1. A method for producing a display apparatus comprising:
charging a transparent resin filler between a picture image display panel and a front side panel;
curing the transparent resin filler in situ to form a transparent resin layer; and
causing, when foreign matter has been mixed into the transparent resin layer, movement of a re-working member between the picture image display panel and the front side panel to remove the transparent resin layer;
wherein the transparent resin layer contains
(i) an acrylate material including a polyurethane acrylate or an isobornyl acrylate, and
(ii) a photopolymerization initiator, and

wherein the transparent resin layer has a hardness, expressed as Shore E, of E4/15 to E8/15, with a value not greater than 400 N/cm 2 obtained by multiplying the hardness with a bonding strength.

2. The method of producing a display apparatus according to claim 1 , wherein the bonding strength is between 20 and 80 N/cm 2 .

3. The method of producing a display apparatus according to claim 2 , wherein the viscosity of the transparent resin filler is between 500 and 3000 mPa·s.

4. The method of producing a display apparatus according to claim 3 , wherein a curing shrinkage, which is a shrinkage of the as-cured transparent resin filler, is not greater than 2.5%.

5. A method for producing a display apparatus comprising:
charging a transparent resin filler between a picture image display panel and a front side panel;
curing the transparent resin filler in situ to form a transparent resin layer; and
causing, when foreign matter has been mixed into the transparent resin layer, movement of a re-working member between the picture image display panel and the front side panel to remove the transparent resin layer,
wherein the transparent resin layer contains:
(i) a (meth-)acrylate material selected from the group consisting of a polyurethane acrylate, a polyisoprene acrylate, an esterification product thereof, an isobornyl acrylate, a dicyclopentenyl oxyethyl methacrylate, and 2-hydroxybutyl methacrylate,
(ii) a polymer selected from the group consisting of a butadiene polymer or a terpene-based hydrogenated resin, and
(iii) a photopolymerization initiator, and

wherein the transparent resin layer has a hardness, expressed as Shore E, of E4/15 to E8/15, with a value not greater than 400 N/cm 2 obtained by multiplying the hardness with a bonding strength.

Assignees

• Watanabe Yuki
• Shinya Yoshihisa
• Kamiya Kenji
• Dexerials Corp

Inventors

• Watanabe Yuki
• Shinya Yoshihisa
• Kamiya Kenji

Classifications

• H10K59/8792

  comprising light absorbing layers, e.g. black layers · CPC title

• G09F9/30 Primary

  in which the desired character or characters are formed by combining individual elements (panels comprising a number of electrodes in a single cell controlling light arriving from an independent light source, e.g. electro-optical or magneto-optical cell, G02F1/00) · CPC title

• Y10T428/31855

  Of addition polymer from unsaturated monomers · CPC title

• Y10T428/31551

  Of polyamidoester [polyurethane, polyisocyanate, polycarbamate, etc.] · CPC title

• Y10S156/924

  Delaminating display screen, e.g. cathode-ray, LCD screen · CPC title