Scratch resistant, chemically tempered glass substrate and its use
A technology of chemically tempered glass and glass substrate, applied in optics, optical components, instruments, etc., can solve the problems of insufficient mechanical stability and use of anti-reflection systems
Active Publication Date: 2015-12-23
SCHOTT AG
View PDF3 Cites 5 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Furthermore, in many cases the aforementioned anti-reflection systems are not mechanically stable enough for use in mobile electronic devices such as smartphones
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0042] figure 1 An example of a glass element 1 is shown in the form of a chemically toughened glass substrate 10 with a potassium-rich surface 11 on which a coating comprising a laminate system 200 is provided. The layer system 200 is based on an adhesion-promoting layer 20 , a multilayer, preferably four-layer antireflection coating 100 and an optional fluorine-containing organic layer 70 .
[0043] For the glass substrate 10, there can be used, for example, fluorine-containing glass having the above composition and having a SiO2 content in the range of 56 to 70 mole percent.
[0044] Typically, the glass substrate 10, 11 is in the form of a plate or sheet, and the adhesion promoting layer 20 is a thin oxygen-rich layer mainly comprising silicon oxide, but may also contain part of aluminum oxide, or may consist mostly of aluminum oxide . This lowermost oxygen-rich layer 20 adheres particularly well to the potassium-rich surface 11 of the glass substrate 10 and provides adh...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| thickness | aaaaa | aaaaa |
| thickness | aaaaa | aaaaa |
| compressive stress | aaaaa | aaaaa |
Login to View More
Abstract
An object of the disclosure is to provide a layer system for a chemically tempered glass substrate, which adheres particularly well to the glass substrate and provides an anti-reflective effect and particularly high scratch resistance. Accordingly, the invention provides a scratch-resistant chemically tempered glass element, comprising a chemically tempered glass substrate having a potassium-rich surface, and a layer system which comprises a plurality of successive layers including an oxygen-rich layer adjacent the potassium-rich surface of the glass substrate. The oxygen-rich layer comprises predominantly silicon oxide and / or aluminum oxide, and is an adhesion promoting layer for a nitridic hard material layer which is the lowermost part of a multi-layered, in particular four-layered, anti-reflective coating. The anti-reflective coating is composed of layers of different refractive indices, alternating higher refractive indices and lower refractive indices.
Description
technical field [0001] The present invention generally relates to a chemically toughened glass with a special layer system. Background technique [0002] Chemically tempered glass for electronic mobile devices, such as smartphones, tablets, navigation systems, etc., is generally known. These are generally aluminosilicate glasses which have a refractive index greater than 1.5 at a wavelength of 550 nm. In chemical tempering, potassium ions from a salt bath replace the sodium ions of the glass, increasing the potassium ions in the area a few microns closer to the surface. Potassium content is in the range of a few mass percentages. Through chemical toughening, the bending strength and scratch resistance are improved. Nonetheless, surface damage in the form of scratches is often evident after a relatively short period of use typical of the product. Although chemical toughening prevents the glass from breaking easily when subjected to bending loads, because the pre-compressi...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): C03C17/34C03C3/112C03C3/115C03C3/097C03C3/091C03C3/093C03C3/083C03C3/085
CPCC03C3/083C03C17/3435C03C21/002C03C2217/734C03C2217/76C03C2218/154C03C2218/155C03C2218/156Y10T428/24942C03C17/3417C03C21/00G02B1/115C03C2217/213C03C2217/214C03C2217/281
Inventor 托尔斯滕·达姆克里斯汀·海茵
Owner SCHOTT AG