Abstract:
A platform for securely mounting a wafer cassette holder thereon is provided which includes a wafer cassette holder that has a flat bottom surface and four sidewall panels, a platform that has a flat top surface larger than and for mating to the flat bottom surface of the wafer cassette holder, And a securing device mounted in the flat top surface of the platform juxtaposed to each side of the four sidewalls of the wafer cassette holder for preventing the holder from accidentally slipping off the platform, the securing device may include either a plurality of engagement pins that slidingly engages the wafer cassette holder for securely holding the holder on the platform, or a plurality of side panels mounted along the peripheral edge of the platform for preventing the holder from slipping off the platform.
Abstract:
In certain aspects, a system is provided for abating perfluorocarbons (PFCs) from a gaseous waste stream that includes (1) a wet scrubber adapted to scrub a gaseous waste stream and having an outlet adapted to discharge a scrubbed gaseous waste stream; and (2) a controlled decomposition oxidation (CDO) system. The CDO system includes a CDO thermal reaction chamber that includes (a) an inlet coupled to the outlet of the wet scrubber; (b) a catalyst bed adapted to abate PFCs within the CDO thermal reaction chamber; and (c) an outlet. Numerous other aspects are provided.
Abstract:
In a semiconductor manufacturing fabrication plant with production to-order type operation, hundreds of devices and various processes are managed. To provide short cycle time and precise delivery to satisfy customer expectations is a major task. A dispatching algorithm named "Required Turn Rate (RTR)" functions according to the level of current wafers in process (WIP) algorithm revising the due date for every lot to satisfy the demand from Master Production Scheduling (MPS). Further the RTR algorithm calculates the RTR of each lot based on process flow to fulfill the delivery requirement. The RTR algorithm determines not only due date and production priority of each lot, but also provides RTR for local dispatching. The local dispatching systems of each working area dispatch the lots by using required turn rate to maximize output and machines utilization.
Abstract:
A method of taking a sliding exercise, which is taken on a training machine and the training machine has two pedals, includes the steps of: a) putting feet on the pedals; and b) reciprocating the feet in opposite directions or in the same direction. The feet respectively move in a curved path on a substantial horizontal plane. Therefore, the use's feet reciprocate forward/rearward and split to train user's muscles.
Abstract:
In some aspects, a method is provided for abating perfluorocarbons (PFCs) in a gaseous waste abatement system having a pre-installed controlled decomposition oxidation (CDO) thermal reaction chamber. The method that includes (1) providing a catalyst bed within the CDO thermal reaction chamber; and (2) introducing a gaseous waste stream into the CDO thermal reaction chamber so as to expose the gaseous waste stream to the catalyst bed. Numerous other aspects are provided.
Abstract:
A method and system for production line target generation based on unlimited capacity allocation utilizing an algorithm that begins with setting the required delivery date (REQ_DATE) from the customer's purchase order and using the REQ_DATE to define other related requirements by backtracking the production line requirements to determine how many stages need to be passed before delivery, and to decide where and how to setup and arrange the production equipment, in order to complete and deliver the ordered goods on time. Particularly, the processing of each lot is monitored while passing through the processing stages by: calculating the days remaining, DR, by subtracting the present date from the initial delivery date, REQ_DATE−TODAY, for each lot; calculating the processing stages remaining for each lot to reach the last processing stage, to determine the remaining stages, Sg=last processing stage's number—the instant stage number; and dividing the remaining stages by the remaining days, Sg/DR, to derive the penetration stages per day required for each lot; and then, using the derived penetration stages to target for the movement of the lots through each remaining stage to achieve the production goal in a timely manner.
Abstract translation:一种基于无限容量分配的生产线目标生成方法和系统,该算法首先从客户的采购订单设定所需交货日期(REQ_DATE),并使用REQ_DATE通过回溯生产线要求来确定其他相关要求,以确定 交货前需要通过多少阶段,并决定在何处设置和安排生产设备,以便按时完成订购的货物。 特别地,通过以下步骤来监视每批的处理:通过从每个批次的REQ_DATE-TODAY的初始交货日期减去当前日期,从而计算剩余的天数D R SMALLCAPS> ; 计算每个批次剩余的处理阶段以达到最后一个处理阶段,以确定剩余阶段,Sg =最后处理阶段的数量 - 即时阶段数; 并将剩余阶段除以剩余天数Sg / D R SMALLCAPS>,以得出每批所需的每天的渗透阶段; 然后,使用衍生的渗透阶段来瞄准批次在每个剩余阶段的移动,以及时实现生产目标。
Abstract:
A plural motor assembly includes a first motor generating a parameter, a control circuit electrically connected to the first motor for detecting the parameter and outputting a switch signal while the parameter is abnormal, and a second motor electrically connected to the control circuit and operating in response to the switch signal. Thus, when one motor is damaged, the speed of rotation of the other motor is increased to maintain normal operation.
Abstract:
The invention provides an index of line balance method for maintaining optimum queued quantities of products at a manufacturing step and over an entire manufacturing line. The method begins by: first, assigning a daily standard move of product (Std Move) which should be produced in a manufacturing line. Second, the standard WIP StdWIP is calculated for each manufacturing stage i by multiplying the theoretical cycle time C/T of each stage by the daily standard move StdMove; (i.e., StdWIP=CT*StdMove). Third, the difference Di between the current WIP CWi and standard WIP StdWIP at every stage i. (Di=Cwi-Swi, ) is calculated. Fourth, the cumulative difference CDi between current WIP Cwi and standard WIP StdWIP of every stage i from stage i to stage n is calculated. ##EQU1## Fifth, the index of line balance BIi is calculated by dividing the sum of all positive CDi from stage i to stage n by the absolute value of the sum of all negative CDi from stage i to stage n. Next, the index of line balance BIi for each stage i is plotted as a line chart for each stage i. Lastly, additional production resources (e.g., tools) are allocated to the stages that have an index of line balance BIi greater than 1.2 and production resources are reduced to the stages that have an index of line balance BIi less than 0.80. The method reduces WIP, cycle time and costs by better allocating manufacturing resources.