PRODUCTION OF LIQUID CRYSTAL DISPLAY PANEL

• Main Authors: SHIROUCHI YASUNARI, URADE TOSHINORI
• Format: Patent
• Language: English
• Published: 03.06.1986
• Subjects: DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH ISMODIFIED BY CHANGING THE OPTICAL PROPERTIES OF THE MEDIUM OF THEDEVICES OR ARRANGEMENTS FOR THE CONTROL OF THE INTENSITY,COLOUR, PHASE, POLARISATION OR DIRECTION OF LIGHT, e.g.SWITCHING, GATING, MODULATING OR DEMODULATING; FREQUENCY-CHANGING; NON-LINEAR OPTICS; OPTICAL ANALOGUE/DIGITAL CONVERTERS; OPTICAL LOGIC ELEMENTS; OPTICS; PHYSICS; TECHNIQUES OR PROCEDURES FOR THE OPERATION THEREOF

PURPOSE:To shorten the processing time of defoaming and degassing by previously heating liquid crystals to be injected into a prescribed gap space part of panel constitution up to a high temperature preventing the liquid crystal from the loss of its characteristics in vacuum and then removing bubbles and gas. CONSTITUTION:A pair of panel substrates on which electrodes are formed respectively are opposed with a prescribed gap space. Prior to the injection of liquid crystal 1 into the prescribed gap space part of said panel constitute, the liquid crystal 1 is stored in a storage vessel 2, the vessel 2 is arranged on a heating part 4 arranged in an airtight vessel 3, the air in the vessel 3 is sucked up to vacuum by an exhaust means 5 and the liquid crystal 1 is heated up to a high temperature within an allowable temperature range preventing the liquid crystal from the loss of its characteristics by the heating part 4. Consequently, the viscosity o the liquid crystal 1 is reduced and its fluidity is improved, so that many bubbles, impurity gas or water adsorbed and included in the liquid crystal 1 are efficiently removed.