Trends in Water Filtration for TFT-LCD Production TFT-LCD

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1 Trends in Water Filtration for TFT-LCD Production TFT-LCD W.L. Gore & Associates, Inc. November 5 th. 2010

2 W. L. GORE & ASSOCIATES, INC. Founded in Privately held and financially stable Over $2.5 billion in annual sales 25 More than 8,600 Associates in 80+ countries More than 1,200 engineers and scientists 1200 Dedicated to fitness for use in all our products World leader in microporous PTFE technology

3 LCD Production Process and Water Final Filtration TFT TFT Production Process 1. Typically used, some now moving to high retention MF 2. Typical specification 10, um 3. Typically uses 2.0 to 2.5 m3 of water to produce 1 m2 of glass (newer gen plants) Cell/Module Assembly Process CF Production Process 1. Significant trend to use MF cartridges 2. Typical specification 10, um 3. Small amount of water used to produce 1 m2 of LCD display 1. Typically used, but some now moving to high retention MF 2. Typical specification 10,000 counts/liter at 0.2um 3. Typically uses 0.5 to 1.0 m3 of water to produce 1 m2 of glass Typically need around 3.0 m3 of water for entire production process to produce 1 m2 of finished LCD display

4 Why moving towards MF, away from? 1. Water specification can be economically and reliably achieved by MF as final filter in LCD manufacture 2. Lower filter cost 3. Lower electricity cost due to lower pressure drop and smaller sized pumps 4. Eliminates reject water which saves on capital expense and treatment cost associated with water that is treated but not used in production 5. Long delivery lead time of

5 Gore s New Membrane Technology For more than 25 years, Gore has been providing the filtration media that goes into the best-performing PTFE filters in the world 25 PTFE Gore has developed new PTFE membranes that provide significantly enhanced performance PTFE This unmatched performance and economics is only available in GORE Filters

6 Innovative Filtration Technology Particle Retention Typical Filters Phobic & Philic Greater retention without sacrificing flow GORE Filters Phobic & Philic Better Economics Greater flow without sacrificing retention Flow

7 Example 1 New Construction System Using Cartridges A new system could use one third of the cartridges and housings compared to conventional cartridges enabling dramatic savings in initial capital and operating expense. 350GPM (80 CMH) System - Final Filter (3) 9-Round Housings Standard 40 Cartridges Filters (2) 7-Round Housings 30 GORE Cartridge Filters

8 Example 2 Replacement of with GORE Filters In many applications, GORE Filters can be used instead of ultra filtration modules, in new construction, or when the modules are due for replacement GPM (~230 CMH) UPW System - Final cartridge = GORE 0.02 GORE Modules Two 23-round housings, 30-in GORE Filters

9 Optimizing Your UPW System Advanced MF as final filter, high reliability in meeting UPW particle specification Simplify UPW loop and operation Less space required Lower power consumption More flexibility CAPEX & OPEX saving

10 Additional Applications for Gore Filters in FPD Production: CDS Point-of-Use SOXAL

11 Industry Recognition GORE Filters for Ultrapure Water Applications GORE Filters for Semiconductor Applications

12 Thank You! We will be available at our booth at the break to answer any questions you may have.