摘要:
An automated material handling system is presented for a manufacturing facility divided into separate fabrication areas. The automated material handling system plans and carries out the movement of work pieces between fabrication areas and maintains a database indicating the location of each work piece within the manufacturing facility. In one embodiment, the automated material handling system accomplishes the containerless transfer of semiconductor wafers through a wall separating a first and second fabrication areas. The wafers are transported within containers (e.g., wafer boats). The material handling system includes a number of transfer tools, including air lock chambers, mass transfer systems, robotic arms, and stock areas. The material handling system also includes a control system which governs the operations of the transfer tools as well as the dispersal of containers. The air lock chambers provide isolation between fabrication areas while permitting the transfer of wafers between the fabrication areas. A mass transfer system positioned within each air lock chamber allows for containerless transfer of wafers through the air lock chamber. The stock areas provide storage areas for containers adjacent to the air lock chambers. The robotic arms are used to move containers between the stock areas and the air lock chambers. The control system includes a main processor, a remote processor associated with each fabrication area, an internal network transmission medium coupling the main processor to the remote processors, and a cell network transmission medium within each fabrication area coupling the corresponding remote processor to one or more transfer tools.
摘要:
An apparatus and method are presented for non-contact manipulation of a semiconductor die during semiconductor device manufacturing. Multiple die manipulation circuits are formed within specific regions of die areas of a semiconductor wafer. The die manipulation circuits may be formed upon a frontside surface of the wafer or upon a backside surface of the wafer. Following separation of the semiconductor dice from the wafer, a die is positioned above a horizontal surface of a die manipulation apparatus. Each die manipulation circuit receives alternating current (a.c.) power via an alternating magnetic field and uses the a.c. power to produce a static magnetic field. The static magnetic field opposes static magnetic fields formed around one or more levitation coils of the horizontal surface, causing the die to be levitated above the horizontal surface. By varying the relative strengths of the magnetic fields created by the levitation coils, "waves" of magnetic flux may be formed. Such waves of magnetic flux may be used to move the die parallel to the horizontal surface, or to rotate the die in a horizontal plane about an axis normal to the horizontal surface. Each die manipulation circuit includes a pickup coil, a levitation coil, a rectifier, and a capacitor. The horizontal surface of the die manipulation apparatus includes transmitter coils in addition to levitation coils. Each transmitter coil receives a.c. electrical power and produces an alternating magnetic field in response to the a.c. electrical power.
摘要:
A semiconductor wafer is provided for sensing and recording processing conditions to which the wafer is exposed. The wafer can also write the recorded processing conditions to an external output device connectable to the wafer. The wafer includes a plurality of regions spaced across the wafer, and at least one sensor placed within each region. The sensor can sense a single processing condition such as, e.g., pressure, temperature, fluidic flow rate, or gas composition. If more than one processing condition is to be measured, then more than one sensor can be placed in each region to provide a sensed reading across the entire wafer surface necessary for gradient measurements. The wafer further includes signal acquisition/conditioning circuit which receives analog signals from each of the sensors placed upon the wafer and converts the analog signals to corresponding digital signals. Digital signals can then be stored within and processed by a processor also formed within the wafer. The semiconductor wafer further includes input/output probe pads which receive external input to the wafer circuitry and output stored information from the circuitry.
摘要:
A method and an apparatus for performing fault detection using real-time or near real-time data from a database. A first process on at least one semiconductor wafer is performed. Data is acquired on at least one of a real-time basis and a near real-time basis, the data comprising at least one of a process state data, a tool state data, and an integrated metrology data resulting from the first processing of semiconductor wafer. The data is stored in a database. A fault detection analysis is performed based upon the data acquired from the database based upon a trigger signal that causes data to be extracted from the database on a substantially real time basis.
摘要:
A metbod for perforning a wafer-less qualification of a processing tool includes creating a wafer-less qualification model for the processing tool. Qualification data is generated from the processing tool iiiring a wafer-less qualification process. The qualification data is compared with the wafer-less qualification model. The processig tool is determined to be operating in a predefined state based on the comparison of the qualification data with the wafer-less qualification model.
摘要:
A method for monitoring consumable performance in a processing tool comprises storing a performance model of the processing tool; receiving a consumable item characteristic of a consumable item in the processing tool; determining a predicted processing rate for the processing tool based on the consumable item characteristic and the performance model; determining an actual processing rate of the processing tool; and determining a replacement interval for the consumable item based on at least the actual processing rate. A processing system includes a processing tool and an automatic process controller. The processing tool is adapted to process wafers and includes a consumable item.
摘要:
A method and apparatus for performing manufacturing system analysis upon a manufacturing network. Real-time production data is collected. The real-time production data is stored in a static file database. A real-time data flow is emulated using said real-time production data from said static file database. A reactive function analysis is performed.
摘要:
A system and method for stocking and sorting reticles used in a semiconductor fabrication facility, the facility having a material handling system that presents a reticle to a photolithography process area. In an example embodiment of the reticle management system, a reticle storage system and a reticle sorting apparatus are coupled to a host system that is adapted to track and control the movement of reticles in the material handling system. The host system is capable of interfacing with a management input module that integrates management directives into the reticle flow plan in the manufacturing process. The result is a reticle management system that is flexible enough to manage a finite number of reticles and pods in minimizing the delivery time of a reticle to the desired location while responding to changing conditions external to the manufacturing process.
摘要:
An apparatus and a system for stocking and sorting wafers in a wafer processing system reduce cycle time in manufacturing and reduce excessive handling of delicate wafers. In an example embodiment, the apparatus includes in an enclosure having therein a scanner adapted to identify codes located on the wafer carriers that indicate the position of a wafer within the carrier. A sorting mechanism for sorting wafers and carriers within the enclosure is also included as well as a computer arrangement that communicates with the management system of the wafer processing system. One of the advantages of the present invention is the reduction in cycle time that is achieved by sorting wafers immediately on demand while at a stocking location.
摘要:
An apparatus for identification of work pieces and protection of equipment used to operate on the work pieces in a computer controlled manufacturing arrangement. The equipment to be protected includes at least one receptacle for holding a work piece, and the apparatus comprises a rail and an electronic sensor mounted to the rail. The rail is shaped to generally to surround a selected portion of the equipment and is arranged to be supported proximate the equipment to deflect objects from the equipment. The electronic sensor is mounted to the rail at a location to sense a work piece in the receptacle and arranged to be coupled to the computer.