摘要:
A programmable metallization device, comprises a first electrode; a memory layer electrically coupled to the first electrode and adapted for electrolytic formation and destruction of a conducting bridge therethrough; an ion-supplying layer containing a source of ions of a first metal element capable of diffusion into and out of the memory layer; a conductive ion buffer layer between the ion-supplying layer and the memory layer, and which allows diffusion therethrough of said ions; and a second electrode electrically coupled to the ion-supplying layer. Circuitry is coupled to the device to apply bias voltages to the first and second electrodes to induce creation and destruction of conducting bridges including the first metal element in the memory layer. The ion buffer layer can improve retention of the conducting bridge by reducing the likelihood that the first metallic element will be absorbed into the ion supplying layer.
摘要:
A tactile display writer unit includes a probe having a contact tip, and at least a first actuator and a second actuator coupled to the probe, whereby activation of the actuators results in a displacement of the probe tip in one or more of a z-direction and in a lateral direction having a vector in an x-y plane. Also, a display writer includes a plurality of such units supported in an x-y array. The writer units may have a third actuator coupled to the probe. Also, a tactile vision system includes such a display writer, an image processor, and an image sensor. The processor transforms RGB image information from the image sensor into hue-based information having two or more attributes; and the actuators in the tactile display writer are activated by the information attributes. Also, a method for producing a tactile color stimulus at a site on the skin of a subject includes providing a probe having a contact tip; displacing the tip at the contact site in a direction generally normal to the skin surface at the site to an extent that relates one attribute of a hue-based model of the color, and displacing the tip in at least one lateral direction generally in a plane parallel to the skin surface at the site to an extent that relates to at least one additional attribute of the color.
摘要:
A tactile display writer unit includes a probe having a contact tip, and at least a first actuator and a second actuator coupled to the probe, whereby activation of the actuators results in a displacement of the probe tip in one or more of a z-direction and in a lateral direction having a vector in an x-y plane. Also, a display writer includes a plurality of such units supported in an x-y array. The writer units may have a third actuator coupled to the probe. Also, a tactile vision system includes such a display writer, an image processor, and an image sensor. The processor transforms RGB image information from the image sensor into hue-based information having two or more attributes; and the actuators in the tactile display writer are activated by the information attributes. Also, a method for producing a tactile color stimulus at a site on the skin of a subject includes providing a probe having a contact tip; displacing the tip at the contact site in a direction generally normal to the skin surface at the site to an extent that relates one attribute of a hue-based model of the color, and displacing the tip in at least one lateral direction generally in a plane parallel to the skin surface at the site to an extent that relates to at least one additional attribute of the color.
摘要:
A programmable metallization device comprises a first electrode and a second electrode, and a first dielectric layer, a second dielectric layer, and an ion-supplying layer in series between the first and second electrodes. In operation, a conductive bridge is formed or destructed in the first dielectric layer to represent a data value. During read, a read bias is applied that is sufficient to cause formation of a transient bridge in the second dielectric layer, and make a conductive path through the cell if the bridge is present in the first dielectric layer. If the bridge is not present in the first dielectric layer during the read, then the conductive path is not formed. Upon removal of the read bias voltage any the conductive bridge formed in the second dielectric layer is destructed while the conductive bridge in the corresponding other first dielectric layer, if any, remains.
摘要:
A programmable metallization device comprises a first electrode and a second electrode, and a first dielectric layer, a second dielectric layer, and an ion-supplying layer in series between the first and second electrodes. In operation, a conductive bridge is formed or destructed in the first dielectric layer to represent a data value. During read, a read bias is applied that is sufficient to cause formation of a transient bridge in the second dielectric layer, and make a conductive path through the cell if the bridge is present in the first dielectric layer. If the bridge is not present in the first dielectric layer during the read, then the conductive path is not formed. Upon removal of the read bias voltage any the conductive bridge formed in the second dielectric layer is destructed while the conductive bridge in the corresponding other first dielectric layer, if any, remains.
摘要:
A programmable metallization device comprises a first electrode and a second electrode, and a dielectric layer, a conductive ion-barrier layer, and an ion-supplying layer in series between the first and second electrodes. In operation, a conductive bridge is formed or destructed in the dielectric layer to represent a data value using bias voltages having the same polarity, enabling the use of diode access devices. To form a conductive bridge, a bias is applied that is high enough to cause ions to penetrate the conductive ion-barrier layer into the dielectric layer, which then form filaments or bridges. To destruct the conductive bridge, a bias of the same polarity is applied that causes current to flow through the structure, while ion flow is blocked by the conductive ion-barrier layer. As a result of Joule heating, any bridge in the dielectric layer disintegrates.
摘要:
A semiconductor device with a cavity structure comprises: a carrier substrate; a first die having an active surface and the pads thereon; a back surface of the first die is disposed on the carrier substrate; a second die having a top surface and a back surface and a cavity structure therein; the top surface of a second die is flipped to dispose on the first die, and the cavity structure is an inverse U-type to dispose between the active surface of the first die and the top surface of the second die; the wires is electrically connected the pads with the first connecting points; a package body encapsulated the first die, the second die, the wires, and the portion of the top surface of the carrier substrate; and the connecting components is disposed on the back surface of the carrier substrate and is electrically connected the second connecting points.
摘要:
A method for packaging semiconductor device is provided, which comprises: providing a carrier substrate having a top surface and a back surface, a circuit arrangement on the top surface of the carrier substrate, and a through hole is disposed near the center of the carrier substrate and is formed passed through the carrier substrate; providing a chip having an active surface and a back surface, a plurality of pads is disposed on the periphery of the active surface and a plurality of connecting elements is disposed thereon; the active surface of chip is flipped and bonded on the circuit arrangement on the top surface of the carrier substrate, and the plurality of connecting elements is not covering the through hole; filling the underfilling material to encapsulate between the plurality of connecting elements and the top surface of the carrier substrate and to fill with the through hole; and performing a suction process to remove the air within the underfilling material between the plurality of connecting elements on the chip and the top surface of the carrier substrate, such that the underfilling material can completely encapsulate between the plurality of connecting elements on the chip and the top surface of the carrier surface.
摘要:
A light-emitting diode (LED) lamp and a polygonal heat-dissipation structure thereof are provided. The LED lamp includes a polygonal heat-dissipation unit and a lighting module. The polygonal heat-dissipation unit has a polygonal hollow column and fins. The fins and the lighting module are thermally disposed on an inner surface and an outer surface of the polygonal hollow column, respectively. Thus, heat generated by the lighting module is dissipated by the fins rapidly. As the fins are thermally disposed on the inner surface of the polygon hollow column instead of being exposed, the volume of the LED lamp can be minimized, and the look of the LED lamp also can be prettified.
摘要:
In accordance with an embodiment, a method comprises providing a substrate having a conductive material thereon, forming a ground plane, a first trace rail, and a first perpendicular trace from the conductive material, and forming an insulator material over the ground plane, the first trace rail, and the first perpendicular trace. The ground plane is between the first trace rail and an area of the substrate over which will be a die. The first trace rail extends along a first outer edge of the ground plane, and the first perpendicular trace is coupled to the first trace rail and extends perpendicularly from the first trace rail.