Method of manufacturing liquid crystal display

Claim 2

A process for filling, with a liquid crystal material, a cavity between substrates employed to form a liquid crystal display, including de-gassing the liquid crystal by placing it in a partial vacuum; de-gassing the surfaces on the inside walls of the substrates which from the cavity to be filled by placing it in a partial vacuum along with the liquid crystal; placing the display unit into the liquid crystal in the partial vacuum to prepare for filling; back filling the partial vacuum with nitrogen or a non-reacting gas to accomplish filling.

Claim 3

A PROCESS FOR FILLING AND SEALING A LIQUID CRYSTAL DISPLAY DEVICE CONTAINING A LLQUID CRYSTAL MATERIAL AND A PAIR OF SUBSTRATES, THE STEPS COMPRISING: FORMING A CAVITY BETWEEN SAID SUBSTRATES SAID CAVITY SUITABLE FOR CONTAINING SAID LIQUID CRYSTAL MATERIAL; DEGASSING SAID LIQUID CRYSTAL MATERIAL AND THE SURFACES OF SAID SUBSTRATES BY PLACING SAID LIQUID CRYSTAL DISPLAY DEVICE IN A PARTIAL VACUUM WITH SAID LIQUID CRYSTAL MATERIAL; PLACING SAID LIQUID CRYSTAL DISPLAY DEVICE INTO SAID LIQUID CRYSTAL MATERIAL WHILE IN A PARTIAL VACUUM; FILLING SAID CAVITY OF SAID LIQUID CRYSTAL DISPLAY DEVICE BY REPLACING THE PARTIAL VACUUM WITH A NON-REACTING GAS WHEREBY SAID LIQUID CRYSTAL MATERIAL IS FORCED INTO SAID CAVITY BETWEEN SAID SUBSTRATES; AND SEALING SAID CAVITY OF SAID LIQUID CRYSTAL DISPLAY DEVICE.

Claim 4

A PROCESS FOR FILLING AND SEALING A LIQUID CRYSTAL DISPLAY DEVICE CONTAINING A LLQUID CRYSTAL MATERIAL AND A PAIR OF SUBSTRATES, THE STEPS COMPRISING: FORMING A CAVITY BETWEEN SAID SUBSTRATES SAID CAVITY SUITABLE FOR CONTAINING SAID LIQUID CRYSTAL MATERIAL; DEGASSING SAID LIQUID CRYSTAL MATERIAL AND THE SURFACES OF SAID SUBSTRATES BY PLACING SAID LIQUID CRYSTAL DISPLAY DEVICE IN A PARTIAL VACUUM WITH SAID LIQUID CRYSTAL MATERIAL; PLACING SAID LIQUID CRYSTAL DISPLAY DEVICE INTO SAID LIQUID CRYSTAL MATERIAL WHILE IN A PARTIAL VACUUM; FILLING SAID CAVITY OF SAID LIQUID CRYSTAL DISPLAY DEVICE BY REPLACING THE PARTIAL VACUUM WITH A NON-REACTING GAS WHEREBY SAID LIQUID CRYSTAL MATERIAL IS FORCED INTO SAID CAVITY BETWEEN SAID SUBSTRATES; AND SEALING SAID CAVITY OF SAID LIQUID CRYSTAL DISPLAY DEVICE.

Claim 5

The process defined in claim 5 wherein said cavity is formed between a pair of substrates by the steps comprising: placing a tape spacing member between said substrates; placing epoxy about a substantial portion of the perimeter of at least one of said substrates; curing said epoxy; removing said liquid crystal display device from said liquid crystal material after filling; and sealing said liquid crystal display device by adding additional final epoxy to the portion of the perimeter wherein said epoxy has been omitted and curing said final epoxy material whereby a substantially non-contaminated sealed and filled liquid crystal display device is formed.

Claim 6

A process in accordance with claim 3 wherein said additional final epoxy is applied in steps comprising: sealing said cavity of said liquid crystal device by applying a first epoxy whereby curing time of the sealing epoxy is minimized and resultant contamination of said liquid crystal material is reduced; adding a second epoxy whereby the seal made by said first epoxy is mechanically reinforced and secured without introduction of contaminates into said liquid crystal material from said second epoxy.