2. 2
• Legos FCT glass testing is an improvement for the
testing systems.
• Varian will receive a greater proportion of defect-free
glass from vendors.
• Improved panel quality.
• Reduced scrap.
• Lower cost per panel.
Project Background
4. 4
• To be able to test the tester board electronics without
the glass sample being there.
• This will help in reducing the lead time on testing the
glass.
• To understand the different noise components on the
tester circuit and try and reduce it down
• In turn try to increase the quality of the image.
Problem Definition
6. 6
• Phase 1:
• Firstly be able to write a user specified value to the
DAC on the ADI board.
• Phase 2:
• Control the data sent to the each of the column.
• Phase 3:
• Send specific data to each pixel by reading in the
necessary signals that produce the image.
Phases of the project
10. 10
• Vivado being a new software, I started building the
design form scratch without using the reference design.
• designed the schematic and the layout for the final
testing board specific to the P1AS tester board.
• That board would be interfaced with the Kintex705
board and the P1AS tester to test the electronics on the
tester circuit.
My Contribution to the project
11. 11
• The new tester board will be read in all the signals
required to control the Gate Driver and the Readout
board.
• With the use of a CPLD, the signals will be level shifted
from 5V to 2.5V and also converted into differential
signals.
• To reduce the noise on the overall circuit, the signals
are converted into differential signals.
Board Design
12. 12
Learned new software's:
• Vivado, SDK by Xilinx.
• PADS Layout by Mentor Graphics.
• Basics of FPGA.
• Basics of CPLD.
• Basic working of the Flat Panels.
Other skills acquired
• Working and coordinating with a team.
• In case of doubts always ask.
• Think it through before trying something new.
Skills learned
