Scaling API-first – The story of a global engineering organization
Lcd & led tv technologies
1. LCD & LED TV Technologies
Presentation on
Department of Computer Science & Engineering
Faculty of Engineering
University of Development Alternative (UODA)
2. Submitted to
Md. Ashek Al Aziz
Assistant professor
Dept. of Computer Science & Engineering
Faculty of Engineering
University of Development Alternative (UODA)
4. Contents
• What’s Liquid Crystals (LC)
• What’s Liquid Crystals Display (LCD)
• Different types of LCDs
• LCD Display Technology
• Advantages & Disadvantages of LCD
• Applications of LCD
• What’s LED
• Type of DRIVING LED
• Some Types of LEDs
• Advantages & Disadvantages of LED
• Applications of LED
• Difference Between LCD & LED
7. Different types of LCDs
There are Two type of LCDs available
1.Passive Matrix LCDs
2.Active Matrix LCDs
8. Active Matrix V/S Passive Matrix LCDs
Passive Matrix LCD Active Matrix LCD
• Allow very high resolution
• It isn`t limited to about 50
rows
• Each sub-pixel is individually
controlled by an isolated
thin-film transistor (TFT).
• More use in Laptop & TV
• Allow high resolution
• It is usually limited to about 50
rows
• Each sub-pixel is not individually
controlled by an isolated thin-
film transistor (TFT).
• Less use in Laptop & TV
9. LCD Display Technology
• Technology Enhancements:
– Better color through corrected CCFLs, LEDs
– Improved black levels (compensating films)
– Higher contrast (pulsed backlights)
– Wider viewing angles (compensating films)
– Higher resolution (1920x1080)
– Improved LC twist times
13. Type of DRIVING LED
Two type of DRIVING LED
Analog LED Drive Circuits
Digital LED Drive Circuits
14. Some Types of LEDs
Bargraph 7-segment Starburst Dot matrix
15. Advantages & Disadvantages of LED
Advantages
• It is very cheap.
• Very simple electronic circuits.
• It is reliable.
• It is efficient
• Life span : Around 100,000 hours
• Screen size : Up to 90 inches
Disadvantages
• Restriction to only 16 hexadecimal figures.
• Low quality LEDs may cause pollution to environment.
• May result in more e-wastes.
16. Applications of LED
Smartphone
Tablet Pc
Ebook
Ultrabook/Notebook
Video Camera
Media Player
Portable Game
GPS
Automotive
LED TV
Lighting
Smart Metering
17. Difference Between LCD & LED
LED
• Power Consumption is
less
• Faster response rate
time
• Sizes Available
17inches and 70inches.
• Color Accuracy is less
• Cannot be extremely
slim
LCD
• Power Consumption is
more
• Slower response rate
time
• Sizes Available
15inches to 65 inches
• Color Accuracy is more
• Can be extremely slim