FORMATION OF MACROMOLECULE-LIQUID CRYSTAL COMBINED FILM

• Main Authors: MIYASHITA TAKUYA, HAMA KAZUO
• Format: Patent
• Language: English
• Published: 10.03.1995
• Edition: 6
• 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 improve the light transmission characteristic of a macromolecule- liquid crystal combined film, to impart steepness to the light transmission characteristic and to lower the driving voltage by previously coating the surface of a substrate with transparent electrodes on the side where the macromolecule- liquid crystal combined film is to be formed, with an undercoat film subjecting the undercoat film to a rubbing treatment. CONSTITUTION:The surface of the substrate 4 with the transparent electrodes on the side where the high polymer-liquid crystal combined film is to be formed, is previously coated with the undercoat film 5 prior to the formation of the macromolecule-liquid crystal combined film and after the undercoat film 5 is subjected to the rubbing treatment, the macromolecule-liquid crystal combined film is formed thereon. A pretilt angle is previously imparted to the liquid crystals in the macromolecule-liquid crystal combined film by subjecting the undercoat film 5 to the rubbing treatment, there by the steepness is imparted to the light transmission characteristic of the high polymer-liquid combined film even when the high-frequency electric field to be impressed to the high polymer-liquid crystal combined film is off, and the driving voltage is thus lowered.