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Articles having retained strength

A product and flexural strength technology, applied in the field of products with retained strength, can solve the problem of the decrease of the average flexural strength of glass substrates, and achieve the effect of low average flexural strength

Active Publication Date: 2016-03-09
CORNING INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because of this new understanding, there is a need to prevent films from degrading the average flexural strength of glass substrates and articles incorporating them

Method used

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  • Articles having retained strength
  • Articles having retained strength
  • Articles having retained strength

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0144] Examples 1A-1J include articles according to one or more embodiments of the present invention or prior art glass substrates. Examples 1A-1J used commercially available glass substrates of aluminosilicate glass, respectively. The thickness of the glass substrate was 0.7 mm. In Examples 1A-1E, the glass substrate was strengthened by ion exchange to provide a surface compressive stress (CS) of about 690 MPa and a compressive depth of layer (DOL) of about 23 μm. The glass substrate of Example IF was not strengthened by ion exchange. In Examples 1G-1J, the strengthened glass substrate was strengthened by ion exchange to provide a surface compressive stress of about 740 MPa and a depth of compressive layer of about 44 μm. Crack mitigation layers comprising polyimide and / or films comprising indium tin oxide were disposed on strengthened glass substrates and (unstrengthened) glass substrates as provided in Table 1 below. Examples 1A, 1E, 1F, 1G and 1H are shown as comparativ...

Embodiment 2

[0154] Embodiment 2A-2D adopts the glass substrate that comprises following composition respectively: 61mol%≤SiO 2 ≤75mol%; 7mol%≤Al 2 o 3 ≤15mol%; 0mol%≤B 2 o 3 ≤12mol%; 9mol%≤Na 2 O≤21mol%; 0mol%≤K2 O≤4mol%; 0mol%≤MgO≤7mol%; 0mol%≤CaO≤3mol%, and 0mol%≤SnO 2 ≤1 mol%. The glass substrate had a thickness of 0.7 mm, strengthened by ion exchange and bonded crack mitigating layers and / or films were prepared using the same procedure as described above in relation to Examples 1A-1J. The strengthened glass substrates of Examples 2A-2D had a surface compressive stress (CS) of about 776 MPa and a compressive depth of layer (DOL) of about 41.4 μm. A crack mitigation layer comprising polyimide and a film comprising indium tin oxide were disposed on the strengthened glass substrates provided in Table 2 below, using the methods described in relation to Examples 1A-1J to provide examples 2A-2D. products. Adhesion promoters were used in the same manner as in Examples 1B-1D, 1I and 1J...

Embodiment 3

[0160] Embodiments 3A-3C are contemplated embodiments as Figure 7-9 As shown, with Figure 10-12 Correlation model optical reflectance data shown. Examples 3A and 3B are associated with Examples 4C and 4E, respectively, as described below. Examples 3A-3C include articles 300, 310, 320 that include a glass substrate 302, 312, 322, respectively, a crack mitigation layer 304 comprising polyimide disposed on the glass substrate 302, 312, 322, 314, 324, and a film 306, 316, 326 comprising indium tin oxide disposed on said glass substrate 302, 312, 322 such that the crack mitigation layer is between the glass substrate and the film. In Examples 3A-3C, the glass substrates had a thickness of about 0.2-2 mm, respectively. Example 3A included a crack mitigation layer 304 with a thickness of 74 nm and a film 306 with a thickness of 115 nm. Example 3B included a crack mitigation layer 314 with a thickness of 85 nm and a film 316 with a thickness of 23 nm. Example 3C included crack ...

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Abstract

One or more aspects of the disclosure pertain to an article including a film disposed on a glass substrate, which may be strengthened, where the interface between the film and the glass substrate is modified, such that the article retains its average flexural strength, and the film retains key functional properties for its application. Some key functional properties of the film include optical, electrical and / or mechanical properties. The bridging of a crack from one of the film or the glass substrate into the other of the film or the glass substrate can be prevented by inserting a crack mitigating layer between the glass substrate and the film.

Description

[0001] Related Application Cross Reference [0002] This application claims priority under 35 U.S.C. §119 to U.S. Provisional Application Serial No. 61 / 712,908, filed October 12, 2012, and to U.S. Provisional Application Serial No. 61 / 712,908, filed May 7, 2013, under 35 U.S.C. §119 Priority to Application Serial No. 61 / 820395, the contents of which are the basis of this application and are hereby incorporated by reference in their entirety. Background technique [0003] The present invention relates to articles comprising a glass substrate having a film disposed on its surface and a modified interface between the film and the glass substrate such that the glass substrate and / or article substantially retains its Average flexural strength, and a key property that allows the film to remain for its application. [0004] Articles comprising glass substrates, which may be strengthened or robust as described herein, have recently been widely used as protective cover glasses for dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B17/10C03C17/34C03C17/42
CPCC03C17/3417C03C21/002C03C2217/425C03C2217/948Y10T428/24983Y10T428/24926Y10T428/24975Y10T428/24851Y10T428/2495Y10T428/24999Y10T428/24996C03C17/3435C03C17/42C03C17/34C03C17/36G06F3/03C03C17/38
Inventor H·B·德克尔S·D·哈特胡广立F·李J·J·普莱斯C·K·萨哈
Owner CORNING INC
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