Browse Prior Art Database

Sealing Structure for Liquid Crystal Display

IP.com Disclosure Number: IPCOM000036531D
Original Publication Date: 1989-Oct-01
Included in the Prior Art Database: 2005-Jan-29
Document File: 2 page(s) / 54K

Publishing Venue

IBM

Related People

Suzuki, S: AUTHOR

Abstract

A sealing structure is described wherein looped corners are provided as a surrounding seal except for the open-slit corner to prevent the liquid crystal material from being degraded due to direct contact between the liquid crystal material and conducting paste. (Image Omitted)

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Sealing Structure for Liquid Crystal Display

A sealing structure is described wherein looped corners are provided as a surrounding seal except for the open-slit corner to prevent the liquid crystal material from being degraded due to direct contact between the liquid crystal material and conducting paste.

(Image Omitted)

In general, as shown in Fig. 1, a liquid crystal cell 2 has a surrounding seal 4 on all sides except for one corner at which an open slit 6 is formed. The open slit is required to inject a liquid crystal material into the cell. A conducting paste 8 is put on the outside corners of the surrounding seal in order to have electrical contact of common electrodes between an upper glass 10 and a lower glass 12.

Fig. 2 is plane view which shows a structure around the conducting point in accordance with the technique disclosed herein. As shown in Fig. 2, three corners except for the open slit corner are provided looped (or closed) surrounding seal. The technique disclosed herein has no limits in the shape of looped surrounding seal. Fig. 3 shows some sample designs of the looped surrounding seal. Thus, the following advantages can be obtained: (1) liquid crystal material is kept from being degraded due to direct contact between the conducting paste and the liquid crystal material, (2) a short circuit between electrodes 14 and common electrode 16 due to conducting paste's leakage is avoidable, and (3) the conducting paste is easily guided by the looped sea...