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Abrasive for the Production of AntiGlare Surface on Displays

IP.com Disclosure Number: IPCOM000045655D
Original Publication Date: 1983-Apr-01
Included in the Prior Art Database: 2005-Feb-07
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

LaRose, JJ: AUTHOR [+2]

Abstract

The type and extent of reflections from the viewing surface of a data display terminal' such as a Plasma display device, is important to its ease of use. Specular reflection from the front surface of the display glass can produce glare, which interferes with the ability of an observer to see the desired data images. One of the solutions to this problem is an anti-glare surface on the front of the display, which may be accomplished by abrading the glass surface, scattering surface reflections and rendering the reflections less objectionable.

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Abrasive for the Production of AntiGlare Surface on Displays

The type and extent of reflections from the viewing surface of a data display terminal' such as a Plasma display device, is important to its ease of use. Specular reflection from the front surface of the display glass can produce glare, which interferes with the ability of an observer to see the desired data images. One of the solutions to this problem is an anti-glare surface on the front of the display, which may be accomplished by abrading the glass surface, scattering surface reflections and rendering the reflections less objectionable.

A process which has been used to produce this type of anti-glare surface is comprised of two steps: 1. Abrade. 2. Polish. The surface is first roughened, and then polished until the desired degree of reflection scattering is obtained. It is essential that the degree of surface polish be uniform over the entire display face, and repeatable from run to run.

A polishing abrasive that has been found to be particularly suited for this application is powdered soda lime silica float glass having a particle diameter such that the entire distribution of particle diameters is between 10 and 20 microns. The advantage of this abrasive is that it has the same composition and hardness as the glass surface being polished. Therefore, the polishing becomes self-limiting, and an endpoint in the degree of polish can be achieved. The endpoint can be shifted to some extent by tailoring t...