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Transparent pressure-sensitive adhesive sheet and flat panel display

A flat panel display, adhesive sheet technology, applied in the direction of adhesive type, polyether adhesive, film/flake adhesive, etc., can solve the problems of large light reflection loss, inability to achieve good visibility, etc. Achieve improved peel force, excellent visibility

Inactive Publication Date: 2010-03-03
NITTO DENKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, since this space is usually an air layer, it causes a problem that good visibility cannot be achieved due to a large difference in refractive index between the material constituting the above-mentioned indicator panel and protective panel and the air layer. light reflection loss

Method used

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  • Transparent pressure-sensitive adhesive sheet and flat panel display
  • Transparent pressure-sensitive adhesive sheet and flat panel display
  • Transparent pressure-sensitive adhesive sheet and flat panel display

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0207] The polyoxyalkylene polymer (number-average molecular weight: about 20,000) used in component A, the hydrosilyl compound used in component B provided a functional group ratio of 0.75 (the amount of the hydrosilyl group relative to that used in The amount of the alkenyl group of the polyoxyalkylene polymer of component A) and the composition containing a hydrosilylation catalyst for component C (manufactured by KANEKA Corporation, 0.75 mol relative to 1 mol of alkenyl group in component A) into a stirrer (Mini Dappo manufactured by SEATECCOPORATION) with a vacuum device, and the mixture was stirred in vacuum (100 Pa) for 1 hour to defoam. Then, the vacuum defoaming composition was applied (cast) at room temperature on a release-treated base separator (support) made of a polyester film (thickness: 100 μm) with a roll coater, to a composition thickness of 200 μm. The composition was cured by heating at 130° C. for 10 minutes in an oven. A release-treated cover separator ...

Embodiment 2

[0221] A transparent adhesive sheet was prepared in the same manner as in Example 1 except that the coating thickness of the composition was changed to 100 μm. Using the obtained transparent adhesive sheet, a potential difference absorption test was performed. The results are shown in Table 2.

Embodiment 3

[0230] A transparent adhesive sheet was prepared in the same manner as in Example 1 except that the coating thickness of the composition was changed to 250 μm. Using the obtained transparent adhesive sheet, the resistance of the film having the ITO layer was measured. The results are shown in Table 3.

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PUM

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Abstract

A transparent pressure-sensitive adhesive sheet for flat panel displays which has such excellent adhesive properties that after application to a display module (display panel) and a protective transparent plate, the adhesive sheet can be easily removed in the beginning and, despite this, comes to stick thereto at high peel force with the lapse of time. It is excellent especially in low-temperatureadhesion stability and excellent in punchability and the property of diminishing level differences. The transparent pressure-sensitive adhesive sheet is made mainly from a polyoxyalkylene polymer. Itis preferably one made of a material obtained by curing a composition which comprises a polyoxyalkylene polymer having at least one alkenyl group per molecule (ingredient A), a compound having two ormore hydrosilyl groups per molecule on the average (ingredient B), and a hydrosilylation catalyst (ingredient C).

Description

technical field [0001] The present invention relates to a transparent adhesive sheet for flat panel displays. More particularly, the present invention relates to a transparent adhesive sheet for integrating an indicator module and a protective transparent plate by close adhesion and a method for integrating an indicator module with a protective transparent plate using the transparent adhesive sheet flat panel display. Background technique [0002] Generally, a flat panel display such as a liquid crystal display or the like has a given space between an indicator panel and a protective panel comprising a transparent plate (for example, an acrylic plate and a glass plate, etc.) to protect the indicator panel so that the impact applied to the display does not will reach the indicator panel. [0003] However, since this space is usually an air layer, it causes a problem that good visibility cannot be achieved due to a large difference in refractive index between the material co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F9/00C09J7/00C09J7/02C09J11/04C09J171/02C09J183/04G02F1/1335
CPCG02F2201/503C09J5/06C09J2471/00G02F1/133502G02F2201/50C09J171/02G02F2202/28G02F1/133308Y10T428/31855C09J7/25C09J2203/318
Inventor 铃木秀典武藏岛康铃木立也马场纪秀久米克也
Owner NITTO DENKO CORP
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