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    • 8. 发明专利
    • LIGHT CONTROL ELEMENT
    • JPH0481716A
    • 1992-03-16
    • JP19736090
    • 1990-07-24
    • MATSUSHITA ELECTRIC WORKS LTD
    • KODERA KOHEIIKENO SHINOBUTAKAGI KOJIKOBAYASHI FUMIAKI
    • G02F1/1333
    • PURPOSE:To improve the contrast and to manufacture the element at low cost by forming a composite film by dispersing and fixing liquid crystal cells formed by dispersing a phase for a 1st transparent medium for disordering the orientation of liquid crystal in the liquid crystal phase, in a 2nd transparent medium phase. CONSTITUTION:The composite film 34 is formed by dispersing and fixing the liquid crystal cells 33 formed by dispersing the 1st transparent medium phase 332 for disordering the orientation of the liquid crystal in the liquid crystal phase, in the 2nd transparent medium phase 32. The liquid crystal phase is continuous in the liquid crystal cells 33 and the 1st transparent medium phase 232 may be dispersed independently in particles in the liquid crystal phase or partially continuously. Microcapsules sealed containing the liquid crystal phase and 1st transparent medium phase 332, i.e. two phases in the hollow parts of hollow cells which use, for example, melamine formaldehyde resin, etc., for their shell walls are preferably used as the liquid crystal cells. Consequently, the contrast is improved and the consumption of the liquid crystal is small, so the element can be manufactured at low cost.