摘要:
A radio frequency communication device and methods of testing and tuning an antenna attached thereto are described. A radio frequency communication device comprises internal circuitry and an antenna having a plurality of antenna segments associated therewith. Each antenna segment is associated with the antenna in either series or parallel relation through at least one of a fuse and an antifuse. In testing and tuning, a comparison is made to indicate whether the antenna is too short or too long.
摘要:
A radio frequency communication device and method are disclosed. In one aspect, an RFID tag includes an adjustable antenna having a main segment and one or more additional segments that are short relative to the main segment; and the antenna is adjustable to electrically isolate one or more of the additional segments from the main segment. In another aspect, an RFID tag includes an antenna having a first section and a second section short relative to the first section; and the antenna is adjustable to disconnect the first and second sections from each other at a predetermined location. In a further aspect, an RFID tag includes an antenna having a first section and a second section; and the first section is adjustable to decrease the first length of the first section and the second section adjustable to increase the second length of the second section.
摘要:
An apparatus for stabilizing the threshold voltage in an active matrix field emission device is disclosed. The apparatus includes the formation of radiation-blocking elements between a cathodoluminescent display screen of the FED and semiconductor junctions formed on a baseplate of the FED.
摘要:
An inventive process is disclosed for creating a barrier layer on a silicon substrate of an in-process integrated circuit. The process uses MOCVD to form a metal oxide film. The source gas is preferably an organometallic compound. Ozone is used as an oxidizing agent in order to react with the source gas at a low temperature and fully volatilize carbon from the source gas. The high reactivity of ozone at a low temperature provides a more uniform step coverage on contact openings. The process is used to create etch stop layers and diffusion barriers.
摘要:
The present invention is directed to a novel etching process for a semiconductor material which inhibits corrosion of metal comprised of pretreating the material, preferably with a surfactant, and then exposing the material to a mixture comprising salt, a buffered oxide etch, and optionally a surfactant.
摘要:
A high resolution field emission display includes a faceplate and a baseplate. The faceplate includes a transparent viewing layer, a transparent conductive layer formed on the transparent viewing layer and intersecting stripes of light-absorbing, opaque insulating material formed on the transparent conductive layer. The insulating material defines openings less than one hundred microns wide between the intersecting stripes. The faceplate also includes a plurality of localized regions of cathodoluminescent material, each formed in one of the openings. The cathodoluminescent material includes a metal oxide providing reduced resistivity in the cathodoluminescent material. Significantly, the reduced resistivity of the cathodoluminescent material together with the focusing effect of the insulating material provide increased acuity in luminous images formed on the faceplate. The baseplate includes a substrate, an emitter formed on the substrate and a dielectric layer formed on the substrate and having an opening formed about the emitter. The baseplate also includes a conductive extraction grid formed on the dielectric layer and having an opening formed about the emitter.
摘要:
A etch stop layer for use in a silicon oxide dry fluorine etch process is made of silicon nitride with hydrogen incorporated in it either in the form of N—H bonds, Si—H bonds, or entrapped free hydrogen. The etch stop layer is made by either increasing the NH3 flow, decreasing the SiH4 flow, decreasing the nitrogen flow, or all three, in a standard PECVD silicon nitride fabrication process. The etch stop can alternatively be made by pulsing the RF field in either a PECVD process or an LPCVD process.
摘要:
A high resolution field emission display includes a faceplate and a baseplate. The faceplate includes a transparent viewing layer, a transparent conductive layer formed on the transparent viewing layer and intersecting stripes of light-absorbing, opaque insulating material formed on the transparent conductive layer. The insulating material defines openings less than one hundred microns wide between the intersecting stripes. The faceplate also includes a plurality of localized regions of cathodoluminescent material, each formed in one of the openings. The cathodoluminescent material includes a metal oxide providing reduced resistivity in the cathodoluminescent material. Significantly, the reduced resistivity of the cathodoluminescent material together with the focusing effect of the insulating material provide increased acuity in luminous images formed on the faceplate. The baseplate includes a substrate, an emitter formed on the substrate and a dielectric layer formed on the substrate and having an opening formed about the emitter. The baseplate also includes a conductive extraction grid formed on the dielectric layer and having an opening formed about the emitter.
摘要:
A faceplate in a flat panel display has attachment sites made with a method that includes steps of mixing frit and photoresist to form a mixture, applying the mixture to the substrate, softbaking the substrate and mixture, and exposing and developing the resist to define adhesion sites. Spacers are then attached to the faceplate at the adhesion sites.
摘要:
A method of electrically testing pixel functionality is provided comprising releasably disposing a wafer in a socket. The wafer has at least one baseplate comprised of cathode emitters arranged in pixels. The socket has pads. The socket pads are contacted with test pins, and each of the pixels is addressed individually, thereby causing the cathode emitters to emit electrons in a current. The current is collected from each of the pixels on an anode screen. Alternatively, the anode card may have pins, and these pins contact pads on the baseplate. The baseplate, or substrate with baseplates, does not require a socket with pins.