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Cell construction with rough surface glass

IP.com Disclosure Number: IPCOM000015500D
Original Publication Date: 2002-Feb-16
Included in the Prior Art Database: 2003-Jun-20
Document File: 1 page(s) / 198K

Publishing Venue

IBM

Abstract

This article describes new cell construction with rough glass surfaces of a thinner cell for a flat panel display. In order to make flat-panel-display glasses thinner by mechanical abrasion, two processes i.e. lapping and polishing) are generally required. The objective of the lapping is to shorten the thinning process time by using rough abrasive compounds. The objective of the polishing process using fine abrasive compounds is to make the glass surfaces smooth, with a roughness of less than 10nm(Ra), for fine pattern fabrication such as TFT. However, thinning a cell assembly, which consists of both TFT and color filter glasses, does not necessarily require the polishing. Because the fine pattern fabrications of both TFT and color filter glasses are already completed before the cell assembly. In this case, the outside glass surface roughness of new cell construction is from 100 nm(Ra) to 0.5 micrometer (Ra) without lapping as shown in figure 1, which results in the process cost reduction.

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Cell construction with rough surface glass

    This article describes new cell construction with rough glass surfaces of a thinner cell for a flat panel display. In order to make flat-panel-display glasses thinner by mechanical abrasion, two processes ( i.e. lapping and polishing) are generally required. The objective of the lapping is to shorten the thinning process time by using rough abrasive compounds. The objective of the polishing process using fine abrasive compounds is to make the glass surfaces smooth, with a roughness of less than 10nm(Ra), for fine pattern fabrication such as TFT. However, thinning a cell assembly, which consists of both TFT and color filter glasses, does not necessarily require the polishing. Because the fine pattern fabrications of both TFT and color filter glasses are already completed before the cell assembly. In this case, the outside glass surface roughness of new cell construction is from 100 nm(Ra) to 0.5 micrometer (Ra) without lapping as shown in figure 1, which results in the process cost reduction.

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