Operations Manual LC640.480.21-065 HIGH PERFORMANCE 6.5" COLOR TFT AMLCD ® The Definition of Quality Copyright © 2000 by Planar Systems, Inc. Planar and The Definition of Quality are registered trademarks. ColorBrite is a trademark of Planar Systems, Inc. This document is subject to change without notice. Planar provides this information as reference only and does not imply any recommendation or endorsement of other vendor's products. Revision Control Date Description September 2000 Document number OM610-00 Contents LC640.480.21-065 Display ............................................................................................................. 1 Features and Benefits................................................................................................................... 1 Installation and Handling................................................................................................................. 2 Mounting the Display .................................................................................................................. 2 Mounting Display Face Down................................................................................................. 2 Mounting Display Face Up ..................................................................................................... 2 Thermal Control ...................................................................................................................... 2 Isolation and Air Gap.............................................................................................................. 2 Ambient Light Sensor Clearance............................................................................................. 3 Cable Length................................................................................................................................ 3 Cleaning....................................................................................................................................... 3 Avoiding Image Retention........................................................................................................... 3 Specifications .................................................................................................................................. 4 Environmental Characteristics..................................................................................................... 4 Safety and EMI Certifications ................................................................................................. 4 Reliability and Backlight Life.................................................................................................. 4 Mechanical Characteristics.......................................................................................................... 5 Optical Characteristics................................................................................................................. 6 Viewing Angles ........................................................................................................................ 7 Response Times ....................................................................................................................... 7 Interfacing and Operation................................................................................................................ 8 Control Basics.............................................................................................................................. 8 Power Requirements................................................................................................................ 8 Power Sequencing (LCD)........................................................................................................ 9 Video Signals............................................................................................................................... 9 Video Signal Characteristics................................................................................................... 9 Signal Timing......................................................................................................................... 10 Video Characteristics................................................................................................................. 14 Pixel Position......................................................................................................................... 15 Warmup Characteristic ......................................................................................................... 16 Connectors ................................................................................................................................. 17 Video Input and Backlight Control Connector (J1) .............................................................. 17 Backlight Inverter and Heater Connector (J2) ..................................................................... 19 Ambient Light Sensor (Tethered Option) (J3) ....................................................................... 19 Luminance Features....................................................................................................................... 20 Backlight Dimming.................................................................................................................... 20 Manual Dimming................................................................................................................... 20 Automatic Dimming (Ambient Light Sensor) ........................................................................ 22 Automatic Dimming (Manual Offset) .................................................................................... 23 Controlled Luminance Mode................................................................................................. 23 Backlight Enable........................................................................................................................ 24 LC640.480.21-065 Operations Manual (OM610-00) i Temperature Considerations...................................................................................................... 24 Luminance Variation Due to Ambient Temperature ............................................................. 24 Temperature Sensors ............................................................................................................. 25 Heater Operation and Over Heat Status Lines ..................................................................... 25 Backlight Heater.................................................................................................................... 25 Cell Heater ............................................................................................................................ 28 High Temperature Control .................................................................................................... 30 Defects ........................................................................................................................................... 31 Emissive Defects ....................................................................................................................... 31 Cosmetic Defects ....................................................................................................................... 32 Display Dimensions....................................................................................................................... 33 Figures Figure 1. Viewing Angles............................................................................................................ 7 Figure 2. Response Times............................................................................................................ 7 Figure 3. Power Sequencing. ....................................................................................................... 9 Figure 4. Timing Diagram. ........................................................................................................ 11 Figure 5. Timing Diagram. ........................................................................................................ 12 Figure 6. Timing Diagram. ........................................................................................................ 13 Figure 7. Pixel Position of Input Data. ...................................................................................... 15 Figure 8. Warmup Curve. .......................................................................................................... 16 Figure 9. Connector Locations. ................................................................................................. 17 Figure 10. Dimming Voltage Input on J1 (DIM)....................................................................... 20 Figure 11. Luminance vs. Dimming Voltage: Manual Dimming. ............................................. 21 Figure 12. Luminance Levels: Automatic Dimming (Ambient Light Sensor).......................... 22 Figure 13. Luminance Levels: Automatic Dimming (Manual Offset). ..................................... 23 Figure 14. Backlight Power Consumption................................................................................. 24 Figure 15. Sensor Temperature vs. Lamp Heater (Inverter Startup Time Delay) ..................... 26 Figure 16. Sensor Temperature vs. Lamp Heater Duty Cycle................................................... 27 Figure 17. Display Warmup Performance. ................................................................................ 27 Figure 18. Cell Heater Response Time Performance. ............................................................... 28 Figure 19. Cell Heater Maximum Power Time. ........................................................................ 29 Figure 20. Cell Heater Duty Cycle. ........................................................................................... 29 Figure 21. Temperature Control: Maximum Pulse Width Modulation Duty Cycle.................. 30 Figure 22. Diameter Calculation................................................................................................ 32 Figure 23. Display Dimensions. ................................................................................................ 33 ii LC640.480.21-065 Operations Manual (OM610-00) LC640.480.21-065 Display The LC640.480.21-065 is a 6.5-inch diagonal VGA active matrix liquid crystal display (AMLCD) designed to meet the demanding SAE specifications for the transportation industry. This display is ideal for a variety of industrial applications, such as point-ofsale and outdoor kiosks. With a typical brightness of 1000 nits, this sunlight-readable display offers high contrast in bright environments along with a wide dimming range for nighttime operation. With its modular design, this display is perfect for mobile computing and rugged applications where a high-performance embedded display is required. AMLCD Panel: The panel is a color active matrix LCD module incorporating amorphous silicon TFT (thin film transistor) technology with wide viewing angle characteristics. The video interface is digital, 6-bits per color, which allows up to 262,144 different colors. Backlight Module: The backlight assembly contains six high-efficiency cold cathode fluorescent lamps (CCFL), temperature sensors, and lamp heaters. All the components are mounted to a single circuit board. The CCFLs are heated at low temperatures to increase their luminance and extend their life. Located in front of the backlight module are several diffusing and brightness-enhancement films. Inverter Module: This assembly contains the backlight inverter electronics, microprocessor, heater control circuitry, and input/output connectors. All the components are mounted to a single circuit board. The microprocessor controls the inverter, heater, and dimming functions. The dimming functions include manual analog and automatic control based upon ambient light. Ambient Light Sensor: The ambient light sensor can remain attached to the display or mounted remotely using a cable. Video Interface: Standard VGA TFT interface is digital 6-bit RGB. Features and Benefits 1000 cd/m2 typical luminance for sunlight-readability 3:1 contrast @ 100K Lux ambient for outdoor daylight use Wide +35/-45° vertical / ±50° horizontal viewing angle 300:1 digital dimming for efficient control over a wide range of ambient light 18-bit (6 bits per color) video interface for wide color range (262,144 colors) 30,000 hours MTBF for long service-free operating life Durable and lightweight for rugged conditions Convection cooling for operation without cooling fans Modular design for easy field replacement of backlight and inverter Automatic thermal management at low and high temperature extremes LC640.480.21-065 Operations Manual (OM610-00) 1 Installation and Handling Do not dr ...