| 摘要 |
a transparent insulation plate (15) replacing a spacer of the usual contact panel, a transparent top plate (20) made of polyester, a top electrode of ITO (22) formed on the top plate (20) in a direction of width, a bottom electrode of ITO (12) formed on a bottom plate (10) in a direction of column, penetration holes (17) of 3-5 μm dia. formed on a transparent insulation plate (15) having 20-30 m thickness and turning on electric current when the top and bottom electrodes pressured.
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