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'Mask' simply is an arrangement of opaque & transparent areas, that is used to bear a 'pattern' in VLSI 'Patterning' process.
As we know, an IC is a combination of various 'layers' of silicon, each having a certain function in the big picture. Now in Patterning process, a bare silicon wafer is selectively exposed by patterning the insulating coating (silicon dioxide) on top. To pattern the SiO2, we use an 'organic photo-resist' layer, on top of SiO2. The 'mask' contain the design we want, where we want to expose Silicon. So, first we place the mask & pattern the resist (through UV/X-ray, Organic acid, etc etc) and then we pattern the SiO2 that has been exposed now. Resist will be completely removed later.
There are positive & negative Masks also, considering the opaque & transparent regions.
What else can I help you with?
Role of vlsi in medical field?
Role of vlsi in medial field is to(i) Reduce power consumption in batteries used in pacemaker device or any other medical oriented devices.
Need 5th sem notes of cmos and vlsi?
circuit design process
Who invented vlsi?
No single individual, no single company. VLSI was just one of the steps in the process of the industry learning how to squeeze more components on each chip. It is long obsolete.
When was VLSI Technology created?
VLSI Technology was created in 1979.
When did VLSI Technology end?
VLSI Technology ended in 1999.
What is lithography in vlsi and its types?
lithography is the prcess of transfering patterns of geometric shapes in a mask ina thin layer of radiation sensitive material covering the surface of a semiconductor wafer .
Full form of VLSI?
"VLSI" stands for Very Large Scale Integration. VLSI(VERY LARGE SCALE INTEGRATION) VLSI is the process of creating integrated circuit by combining thousands of transistors into a single chip. In other words VLSI is the field which involves packing more and more logic devices into smaller and more smaller areas. for more read please click at given link :- http://www.electronicsgyan.com/introduction.aspx if you have any query post your question at given link :- http://www.electronicsgyan.com/PostForum.aspx?name=VHDL
What is masking in VLSI?
'Mask' simply is an arrangement of opaque & transparent areas, that is used to bear a 'pattern' in VLSI 'Patterning' process. As we know, an IC is a combination of various 'layers' of silicon, each having a certain function in the big picture. Now in Patterning process, a bare silicon wafer is selectively exposed by patterning the insulating coating (silicon dioxide) on top. To pattern the SiO2, we use an 'organic photo-resist' layer, on top of SiO2. The 'mask' contain the design we want, where we want to expose Silicon. So, first we place the mask & pattern the resist (through UV/X-ray, Organic acid, etc etc) and then we pattern the SiO2 that has been exposed now. Resist will be completely removed later. There are positive & negative Masks also, considering the opaque & transparent regions.
What are applications of vlsi?
sum of the applications of VLSI are chip like microcontroller,microprocessor,mobile etc
What does Vlsi era mean?
VLSI Era:- Very Large Scale Integration Era
What is vlsi based on hardware or software?
to say frankly it is still a confusion thing for me to decide vlsi is either hardware or software,but according to my opinion vlsi is both hardware and software.
What are the difference between VLSI and embedded design?
how to make a chip ---- vlsi how to use a chip ---- embedded systems
