| http://www.w3.org/ns/prov#value | - 0047] As disclosed in U.S. Pat. No. 5,636,072 or JP-A-11-194723 cited above, the actuator portion 12 has a structure in which a thin-wall portion 15 is formed in a substrate 14 made of ceramics such as zirconia and a piezoelectric/electrostrictive layer or anti-ferroelectic substance layer 16, a white scattering body layer 17, a color light emission body layer 18 and a contact layer 19 are sequent
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