Agc Glass Europe

Agc Inc.

Asahi Glass Company, Limited

Fabrice Sinapi

Etienne Degand

Ingrid Marenne

Zakaria Habibi

Eugenie Peyroux

Christine Deneil

Eugénie Peyroux

A cover glass sheet configured to cover a display element including a first textured surface having a surface roughness defined by a first arithmetic amplitude value, Ra1, and a first spacing value, Rsm1. Both values are measured on an evaluation length of 12 mm with a Gaussian filter wherein the cut-off wavelength is 0.8 mm. A first transmission haze value, Haze1, is equal to or lower than 10%. A first clarity value, Clarity1, and a second textured surface comprise a second transmission haze value, Haze2. The second transmission haze value, Haze2, of the second textured surface is equal to or lower than a maximum haze value, HazeMax (Haze2≤HazeMax), wherein HazeMax=4.99−8.13 10(Haze1)+4.67 10(Clarity1) %.

Cover glass sheet

A display device with a display element having a display surface and a cover glass sheet, having a first textured surface, such that the first textured surface is facing the display element. The first textured surface has a surface roughness defined by a first arithmetic amplitude value, Ra1, being equal to or greater than 0.12 &#x3bc;m (Ra1&#x2265;0.12 &#x3bc;m) and a first spacing value, Rsm1, being equal to or greater than 45 &#x3bc;m (Rsm1&#x2265;45 &#x3bc;m) both measured on an evaluation length of 12 mm and with a Gaussian filter of which the cut-off wavelength is 0.8 mm. The first textured surface is in direct contact with the display surface over at least a portion of a contact area of the first textured surface.

Display device

A glass sheet comprising at least one etched surface having a surface roughness defined, when measured on an evaluation length of 2 mm and with a Gaussian filter of which the cut-off wavelength is 0.8 mm, by 0.02&#x2264;Ra&#x2264;0.4 microns and 5&#x2264;RSm&#x2264;30 microns. The glass sheet has excellent anti-sparkling properties together with an anti-glare effect. The texturing of the glass sheet may obtained by the process of carrying the glass sheet horizontally on a conveyor, pre-treating the surface to remove defects that may prevent subsequent uniform etching, etching the surface with aqueous solution containing hydrofluoric acid spread in an uniform layer over the surface of the sheet, maintaining the etching solution until the etching is ended, and drying the etched sheet.

Low sparkle glass sheet and process of making it

Growing community of inventors

Spy, Belgium

Fabrice Sinapi