DIFFERENTIAL VACUUM FILLING SYSTEM FOR DISPLAYS
Original Publication Date: 1976-Oct-31
Included in the Prior Art Database: 2004-Mar-27
Xerox Disclosure Journal
An apparatus and method are proposed for filling display type devices with liquid crystal free of bubbles, The filling system is a built up unit using glass spacer rings 1 and a vacuum feedthrough collar 2, A vacuum chamber is separated into two sections A and B by means of a separation plate 3, Hypodermic syringe barrels 4 pass through this plate with their open ends in the upper chamber A while the other ends are attached to hypodermic needles 5 glued into a display device 6 which is located in the lower chamber B of the vacuum system.