Abstract:
A piezoelectric device includes: a substrate (20) having an electrode terminal portion on an upper surface thereof; an electronic part (40) arranged on an upper side of the substrate; and a piezoelectric resonator (30) arranged on an upper side of the electronic part, wherein a surface of the electronic part opposite to a surface having a pad portion is bonded to a lower surface of the piezoelectric resonator having an external terminal portion (35) and the pad portion of the electronic part and the external terminal portion of the piezoelectric resonator are wire-bonded to each other, and wherein the surface of the electronic part having the pad portion is mounted face down on the upper surface of the substrate.
Abstract:
PROBLEM TO BE SOLVED: To provide a piezoelectric vibrator excellent in frequency characteristics by implementing a structure, in which electrical connection between a piezoelectric vibration piece and upper/lower substrates can be surely attained by securing airtightness while reducing a temperature at joining, and to provide a method for manufacturing the same. SOLUTION: A crystal oscillator 10 is composed by directly joining together an intermediate crystal plate 11, in which a crystal vibration piece 12 having excitation electrodes 14a and 14b provided on both main surfaces and a frame 13 are integrally formed, and the upper and lower substrates 2 and 3. The excitation electrodes 14a and 14b are, respectively, connected to connection parts 18a and 18b provided to the frame 13 on the opposite-side main surfaces via lead-out electrodes 15a and 15b and frame through-holes 50a and 50b. Solder 90 is buried in substrate through-holes 60a and 60b provided so as to be electrically connected to respective external connection terminals 8a and 8b in each of the upper and lower substrates 2 and 3. The excitation electrodes 14a and 14b are thereby conductive to the external connection terminals 8a and 8b, respectively. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a piezoelectric wafer and piezoelectric device in which, even when a piezoelectric substrate is formed by etching the piezoelectric wafer, a shape of the piezoelectric substrate is maintained and the piezoelectric substrate can be easily folded away from a piezoelectric wafer body. SOLUTION: In a piezoelectric wafer 10, a piezoelectric substrate 20, supporting parts 40 and a piezoelectric wafer body 12 are formed by etching. The piezoelectric substrate 20 is connected with the piezoelectric wafer body 12 via a plurality of supporting parts 40. Namely, the supporting parts 40 are connected to an end portion of a face (a proximal end face) 22 provided at a side of a proximal end 26 of the piezoelectric substrate 20. Outer side faces 46 of the supporting parts 40 are then formed continuously along a side face 24 of the piezoelectric substrate 20. Furthermore, on an inner side face 42 of each of the supporting parts 40, a first groove 44 is provided along the proximal end face 22 of the piezoelectric substrate 20. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a nozzle preventing a device from corroding with an etchant by receiving the etchant having not been sucked fully from a suction opening, to provide an etchant supply device equipped with the nozzle, and to provide an etching method. SOLUTION: The nozzle 4, configured to supply the etchant to a surface 101 to be processed of a workpiece 10, includes: a nozzle body 41 which has a feed opening 412a for feeding the etchant and the suction opening 413a for sucking the etchant fed from the feed opening 412a, the feed opening 412a and suction opening 413a being disposed below the surface 101 to be processed; and a liquid reception portion 42 for receiving the etchant having not been sucked fully from the suction opening 413a. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a means for forming a laminated half-wave plate for a triple-wavelength compatible optical pickup device. SOLUTION: A first and a second wave plates using crystal having birefringence are laminated together in such a manner that their optical axes intersect to form a laminated wave plate functioning as a half-wave plate as a whole. Phase differences of the first and the second wave plates relative to an ordinary ray and an extraordinary ray with respect to a predetermined wavelength λ are set to be Γ1 and Γ2, an order of a high-mode order is set to be a natural number n, whereby the high-order mode laminated half-wave plate is formed so as to satisfy: Γ1=180°+360°×n; and Γ2=180°+360°×n. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a half-wavelength plate in which two sheets of wavelength plates are pasted and temperature dependence of the phase difference of a plate is reduced. SOLUTION: The wavelength plate becomes by pasting together a first wavelength plate having a phase difference τ 1 (deg) and an azimuth of an optical axis θ 1 (deg) and a second wavelength plate having a phase difference τ 2 (deg) and an azimuth of an optical axis θ 2 (deg). The first wavelength plate and the second wavelength plate are pasted to satisfy θ 1 =(90+θ/2)/2, θ 2 =θ 1 +90+θ/2, when the phase difference τ 1 (deg) of the first wavelength plate and that τ 2 (deg) of the second wavelength plate are taken as τ 1 =τ 2 =360n+180 (n=0, 1, 2, ...), and an angle between polarization faces of incoming light and outgoing light is taken as θ(deg). COPYRIGHT: (C)2011,JPO&INPIT