|
|
The tooling factor is determined experimentally by comparing the XTC's thickness reading with the actual thickness:
Tooling (%) = TFI x TM / TX
where TM = Actual thickness at substrate holder
TX = Thickness reading in the XTC
TFI = Initial Tooling Factor
The actual thickness is determined by profilometry. The term "tooling factor" derives from the fact that both distance and angle relative to the evaporation source affect the flux density. The XTC's sensor head is mounted below and to the side of the substrate holder and so does not receive the same deposition rate as the sample. Thus it is necessary to get a value for the actual the film thickness to correct to the particular geometry or "tooling". See mounting cover slips in holder for instructions on how to deposit a film for profilometry.
以上从网络找来,
tooling factor ,样品片与控制片上的膜层物理厚度比值,可称为比例系数.
样品片与控制片的物理厚度比值.
zww9145认为的镀膜过程 是否指 样品片(实际镀膜片)
计算软件中指控制片.
那就对了.
因为用控制片间接控制样品片上膜层厚度,
所以,要使样品片膜层得到理论要求的厚度, 实际控制片上控制的厚度应该 = 理论厚度/tooling.
TOOLING也就是晶振片和基片之间比值的参数
tooling就是监控水晶片与实际基片间的膜厚比值
此系数用来修正监控片与基片间由于距离不同引起的误差
tooling 就是实际镀膜基片厚度与光学监控片的厚度之比。镀膜机的光学监控是间接监控,通过实时测量监控片的反射/透射的变化,来间接监控镀膜基片的膜厚。旋转夹具调整均匀性后,基片沉积速率一般与监控片不同(一般是监控片较后),因此将设计好的膜系参数转化为镀膜程序参数时各层厚度均须乘以tooling。。tooling可在调试均匀性时测出,数值大小与设备型号,修正板大小有关。相同的机器对与不同的镀膜材tooling数值不一样,但通常相差很小,可以忽略。<b></b>
光学:
设计÷实际=TOOLING
物理:
实际÷设计=TOOLING
|
|