SEMINAR ON LCD FLAT PANEL DISPLAYS MILLIARD在液晶显示器和平板显示器十亿研讨会参考.ppt

* BY ?CLOVER DISPLAY LTD. (HONG KONG S.A.R, CHINA) AN LCD MANUFACTURER SINCE 1983 URL ??? DATE : Sept 29, 2005 ? SPEAKER Mr. JOHNNY C. L. CHOU Topics 1. FLAT PANEL DISPLAY??? 2. INTRODUCTION TO LCD TECHNOLOGY. 3.??? HOW LCDs ARE MADE. 4.??? COLOR LCD 5. TODAY’S LCD 6.??? CUSTOM DESIGN LCD LCM (MODULES). 7.??? TOUCH PANEL, Bi-STABLE LCD ORGANIC LED. 8.??? QUESTION ANSWER. ? Edition #7 (2005) SEMINAR ON LCD FLAT PANEL DISPLAYS 1.0. FLAT PANEL DISPLAYS High Low-medium Low DC Yes OLED (Organic LED) High Low Low AC NO LCD ( Liquid Crystal Display ) High Low High DC Yes EL ( Electro Luminescent Displays ) Low Low High DC Yes Plasma Displays Low Medium Low DC Yes LED ( Light Emitting Diode ) Medium Low High DC Yes VFD ( Vacuum Florescent Displays ) ( scanning ) Low High DC Yes CRT ( Cathode Ray Tube ) Patterning Flexibility Current Voltage Emits Light Display Types ( commonly used Display ) P.1. 2.1. Three major characteristics of Liquid Crystal 2.1.1. The Thermal Nature High Temp Clearing Point Melting Point Liquid State Liquid Crystaline State Solid State (Crystal) 2.1.2. The Optical Nature of a LC molecule Light NO light passing through Light passing through Low Temp 2.1.3. The Electrical Nature of the LC molecules AC potential No potential field Electrodes P.2. 2.0. LIQUID CRYSTAL XXX ?Smectic Phase Nematic Phase Cholesteric phase 2.2. COMMON STRUCTURAL PHASES in the Liquid Crystal State P.3. 2.3. Two other components to make a Liquid Crystal Display Panel 2.3.1. Transparent Electrodes Glass with conductive ITO layer which is etched to form a pattern. 2.3.2. The Polarizer Film Light wave its axis Polarizer its light axis Outgoing light its axis 2.4. A TYPICAL TN TYPE LCD CELL With AC Volts connected NO power supply Polarizer (Axis 0 degree) Polarizer (Axis 90 degrees) Glass with electrodes Glass with electrodes Light Cell Gap = The separation between two glasses Positive Mode = Black digit on th