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Fabrication Technique for Liquid Crystal Display

IP.com Disclosure Number: IPCOM000034154D
Original Publication Date: 1989-Jan-01
Included in the Prior Art Database: 2005-Jan-26
Document File: 2 page(s) / 62K

Publishing Venue

IBM

Related People

Suzuki, S: AUTHOR

Abstract

A fabrication technique is described wherein a corner of one glass plate is diagonally cut and tapered and glue invasion stoppers are provided on a surrounding seal, to smoothly inject a liquid crystal material into a liquid crystal cell and to prevent the liquid crystal material from being degraded due to radiating a UV (ultraviolet) light to the liquid crystal material and due to mixing the liquid crystal material and a UV light-cured sealing glue. (Image Omitted) In general, as shown in Fig. 1, a liquid crystal cell 2 has a surrounding seal 4 on all sides except one corner at which an open slit 6 is formed. The open slit 6 is required to inject a liquid crystal material into the liquid crystal cell 2.

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Fabrication Technique for Liquid Crystal Display

A fabrication technique is described wherein a corner of one glass plate is diagonally cut and tapered and glue invasion stoppers are provided on a surrounding seal, to smoothly inject a liquid crystal material into a liquid crystal cell and to prevent the liquid crystal material from being degraded due to radiating a UV (ultraviolet) light to the liquid crystal material and due to mixing the liquid crystal material and a UV light-cured sealing glue.

(Image Omitted)

In general, as shown in Fig. 1, a liquid crystal cell 2 has a surrounding seal 4 on all sides except one corner at which an open slit 6 is formed. The open slit 6 is required to inject a liquid crystal material into the liquid crystal cell 2. After a gas is exhausted from the liquid crystal cell 2, the cell 2 is dipped in a liquid crystal material vessel and filled with the liquid crystal material by capillary action and external pressure. Then, the opening slit 6 is closed by a UV light-cured final sealing glue. Fig. 2 is a plane view which shows the construction around the open slit in accordance with the technique disclosed herein. Fig. 3 only shows an upper glass and a lower glass among components of the liquid crystal cell shown in Fig. 2. Fig. 4 is a sectional view along line A-A in Fig. 3. Fig. 5 is a side view which shows a corner of the liquid crystal cell as seen from a point A of Fig. 3. As shown in Figs. 2 through 5, the corner of the upper glass plate 8 corresponding to an area of the open slit 2, through which the liq...