摘要:
Disclosed is a piezoelectric/electrostrictive element composed of an actuator section of a uni-morph type comprising a main actuator element including a piezoelectric/electrostrictive layer and a pair of electrodes formed on a first principal surface of the piezoelectric/electrostrictive layer; a vibrating section which contacts with a second principal surface of the piezoelectric/electrostrictive layer for supporting the main actuator element; and a fixed section for supporting the vibrating section in a vibrative manner; wherein a relationship of y=ax is satisfied, and an expression of 1/10.ltoreq.a.ltoreq.100 is satisfied provided that x represents a distance between the pair of electrodes (1 .mu.m.ltoreq.x.ltoreq.200 .mu.m), and y represents a thickness of the piezoelectric/electrostrictive layer (1 .mu.m.ltoreq.y.ltoreq.100 .mu.m). Accordingly, it is possible to greatly increase the relative displacement amount between the no-voltage-loaded state and the voltage-applied state and the relative displacement amount between the states in which mutually opposite electric fields are applied, making it possible to realize easy control when the element is utilized for actuators and improvement in sensitivity when the element is utilized for sensors.
摘要翻译:本发明公开了一种压电/电致伸缩元件,由压电/电致伸缩层的第一主表面上形成的包括压电/电致伸缩层的主致动器元件和形成在第一主表面上的一对电极组成的单态致动器部分构成。 与所述压电/电致伸缩层的第二主表面接触以支撑所述主致动器元件的振动部分; 以及用于以振动方式支撑所述振动部分的固定部分; 其中满足y = ax的关系,并且满足+ E,fra 1/10 + EE a = 100的表达式,只要x表示一对电极之间的距离(1μm) = x <200μm),y表示压电/电致伸缩层的厚度(1μm×y =100μm)。 因此,可以大幅提高无负荷状态与施加电压之间的相对位移量和施加相互相反的电场的状态之间的相对位移量,从而可以实现易于控制 当元件用于传感器时,该元件被用于致动器和提高灵敏度。
摘要:
Disclosed is a display device for displaying a picture on an optical waveguide plate in accordance with an image signal by controlling displacement movement of each of actuator elements in a direction to make contact or separation with respect to the optical waveguide plate so that scattered light is controlled at a predetermined position on the optical waveguide plate, wherein the actuator element comprises a main actuator element including a piezoelectric/electrostrictive layer, and a pair of electrodes formed on a first principal surface of the piezoelectric/electrostrictive layer, a vibrating section contacting with a second principal surface of the piezoelectric/electrostrictive layer, for supporting the main actuator element, and a fixed section for supporting the vibrating section in a vibrative manner, and wherein the actuator element further comprises a displacement-transmitting section for transmitting, to the optical waveguide plate, displacement movement of the main actuator element caused by applying a voltage between the pair of electrodes. According to the display device, the electrostatic capacity of the actuator element can be reduced, further, display brightness without any nonuniformity can be obtained, and it is possible to improve the image quality.
摘要:
An integrated piezoelectric/electrostrictive film type element with excellent durability, includes a substrate made of a ceramic material composed mainly of completely stabilized or partially stabilized zirconium oxide, and a piezoelectric/electrostrictive operating section integrated onto the ceramic substrate by a film-forming method, the piezoelectric/electrostrictive operating section comprising a lower electrode, a piezoelectric/electrostrictive layer of a lead element-containing composition, and an upper electrode, wherein a heterophase-occurence rate at a surface of the piezoelectric/electrostrictive layer is controlled to a range of 0.1 to 30%.
摘要:
A process for providing an integrated piezoelectric/electrostrictive film type element with excellent durability, includes a substrate made of a ceramic material composed mainly of completely stabilized or partially stabilized zirconium oxide, and a piezoelectric/electrostrictive operating section integrated onto the ceramic substrate by a film-forming method, the piezoelectric/electrostrictive operating section comprising a lower electrode, a piezoelectric/electrostrictive layer of a lead element-containing composition, and an upper electrode, wherein a heterophase-occurence rate at a surface of the piezoelectric/electrostrictive layer is controlled to a range of 0.1 to 30%.
摘要:
A ceramic device has an actuator element which includes a shape-retaining layer, an upper electrode formed on an upper portion of the shape-retaining layer, and a lower electrode formed on a lower portion of the shape-retaining layer. A vibrating section of ceramics supports the actuator element and a fixed section of ceramics vibratingly supports the vibrating section. An electrode material of the lower electrode contacting the vibrating section contains an additive in an amount of 0.01% by weight to 20% by weight. The electrode material contains platinum as a major component, for example. The additive to the electrode material is preferably zirconium oxide, cerium oxide, or titanium oxide.
摘要:
Disclosed is a piezoelectric/electrostrictive element composed of an actuator section of a uni-morph type comprising a main actuator element including a piezoelectric/electrostrictive layer and a pair of electrodes formed on a first principal surface of the piezoelectric/electrostrictive layer; a vibrating section which contacts with a second principal surface of the piezoelectric/electrostrictive layer for supporting the main actuator element; and a fixed section for supporting the vibrating section in a vibrative manner; wherein a relationship of y=ax is satisfied, and an expression of {fraction (1/10)}≦a≦100 is satisfied provided that x represents a distance between the pair of electrodes (1 &mgr;m≦x≦200 &mgr;m), and y represents a thickness of the piezoelectric/electrostrictive layer (1 &mgr;m≦y≦100 &mgr;m). Accordingly, it is possible to greatly increase the relative displacement amount between the no-voltage-loaded state and the voltage-applied state and the relative displacement amount between the states in which mutually opposite electric fields are applied, making it possible to realize easy control when the element is utilized for actuators and improvement in sensitivity when the element is utilized for sensors.
摘要翻译:本发明公开了一种压电/电致伸缩元件,由压电/电致伸缩层的第一主表面上形成的包括压电/电致伸缩层的主致动器元件和形成在第一主表面上的一对电极组成的致动器部分构成。 与所述压电/电致伸缩层的第二主表面接触以支撑所述主致动器元件的振动部分; 以及用于以振动方式支撑所述振动部分的固定部分; 其中满足y = ax的关系,并且满足{fraction(1/10)} <= a <= 100的表达式,只要x表示该对电极之间的距离(1mum≤x≤2.0 mum),y表示压电/电致伸缩层的厚度(1μm<= y <=100μm)。 因此,可以大幅提高无负荷状态与施加电压之间的相对位移量和施加相互相反的电场的状态之间的相对位移量,从而可以实现易于控制 当元件用于传感器时,该元件被用于致动器和提高灵敏度。
摘要:
A method for controlling the shrinkage of ceramic formed bodies is provided, including performing a preliminary test to determine an average shrinkage of ceramic formed bodies made from test lots of a ceramic powder, and determining a linear correlation between the average shrinkage and measured amounts of the ground test lots removed from a ball mill during a specific milling time interval. A batch of the ceramic powder is then ground, an amount of the ground ceramic powder removed from the ball mill during the specific time interval is measured, and the linear correlation is used to estimate the shrinkage of a ceramic body made therefrom. The difference between a target shrinkage and the estimated shrinkage is determined, and one or more of the processing conditions used to form the ceramic body are changed to offset the difference.
摘要:
One image is displayed in a period as one frame, which includes one charge accumulation period and one light emission period. In the charge accumulation period, all electron emitters are scanned, and voltages depending on the luminance levels of corresponding pixels are applied to the electron emitters which correspond to pixels to be turned on (to emit light), to accumulate charges (electrons) in amounts depending on the luminance levels of corresponding pixels in the electron emitters which correspond to pixels to be turned on. In the next light emission period, a constant voltage is applied to all the electron emitters to emit electrons in amounts depending on the luminance levels of corresponding pixels from the electron emitters which correspond to pixels to be turned on, thereby emitting light from the pixels to be turned on.
摘要:
An electron emitter includes an emitter section having a plate shape, a cathode electrode formed on a front surface of the emitter section, and an anode electrode formed on a back surface of the emitter section. A gap is formed between an outer peripheral portion of the cathode electrode and the front surface of the emitter section. The front surface of the emitter section contacts a lower surface of the outer peripheral portion to form a base end as a triple junction. The gap expands from the base end toward a tip end of the outer peripheral portion.
摘要:
An electronic pulse generation device has an emitter section having a plate shape, a cathode electrode formed on a front surface of the emitter section, an anode electrode formed on a back surface of the emitter section, and a pulse generation source which applies a drive voltage between the cathode electrode and the anode electrode through a resistor. The anode electrode is connected to GND through another resistor. A collector electrode is provided above the cathode electrode, and the collector electrode is coated with a phosphor layer. A bias voltage is applied to the collector electrode through another resistor.