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Antiglare Method for Gas Discharge Displays

IP.com Disclosure Number: IPCOM000084073D
Original Publication Date: 1975-Sep-01
Included in the Prior Art Database: 2005-Mar-02
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Anderson, LC: AUTHOR [+2]

Abstract

In gaseous discharge display device, the reflection of specular light inside the panel produces a glare condition which is undesirable from a human factors standpoint to the display viewer. Various methods are known in the art to reduce the glare from display devices including non-gas panel displays.

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Antiglare Method for Gas Discharge Displays

In gaseous discharge display device, the reflection of specular light inside the panel produces a glare condition which is undesirable from a human factors standpoint to the display viewer. Various methods are known in the art to reduce the glare from display devices including non-gas panel displays.

One method used with gaseous discharge display devices employs a plastic filter, which is mounted about the outer surface of the display. Another method utilizes organic filter films applied to the display surface, while a third method relates to abrading the display surface to eliminate glare. Such abrading is normally accomplished, for example, by etching the surface of the glass. However, in a gas panel display, the glass utilized on the display surface is float glass having a tin oxide content which reacts with the etchant solution, such that etching of the surface is not feasible.

A preferred method for abrading the display surface comprises sandblasting the front surface to produce an abrasion, which.eliminates the reflectivity without a corresponding loss of resolution. Sandblasting, accomplished with a conventional wet blaster using NOVAHONE* #625, a diatomaceous earth, provides 85% - 95% light transmission and represented the lowest cost and most effective means of resolving the glare problem. The time required for this operation depends on the specific equipment utilized but would range, nominally, between 20 seco...