User manual PLANAR LC640.480.21-065 - Product Manual

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 drop, bend, or flex the display. Do not allow objects to strike the surface of the display. Mounting the Display To maximize shock and vibration performance, the display must be properly mounted using all four mounting hole locations. There are two recommended mounting configurations. Appropriate changes to these mounting configurations may be needed to meet specific requirements or applications. Table 1 below lists the recommended mounting hardware. Table 1. Mounting Hardware. Screw Washer Tightening torque M2.5 SS phillips-head or #4 SS phillips-head Lockwasher, split type 4 oz-in \ 2.8x105 dyne ­ cm Mounting Display Face Down Standoff spacers or bosses with a minimum height of 3.0 mm must be used at all four mounting locations to prevent binding and deflection of the display. Mounting Display Face Up Standoff spacers or bosses with a minimum height of 33.0 mm must be used at all four mounting locations to prevent binding and deflection of the display. Thermal Control Several thermal sensors located on the backlight module allow the display to operate safely at temperature extremes. At low ambient temperatures, heaters on the backlight module warm the lamps to a safe temperature before energizing the lamps. This coldstart routine extends the life of the lamps and increases the luminance at low temperatures. During the warm up period, pin 39 on the input connector is set low. At high ambient temperatures, the luminance will gradually be reduced to maintain acceptable temperatures on the inverter module. If the temperatures remain above the acceptable level after the luminance has been totally reduced, then the inverter will shut down. During the luminance reduction period, pin 40 on the input connector (J1) is set to low. Isolation and Air Gap The display generates high voltage AC to drive the CCFL tubes. High voltage is present at numerous points on the backlight and inverter module that forms the rear surface of the display, so your application should not place metal too near the module. In the interests of both high voltage isolation and airflow for cooling, it is recommended that an air gap of .197" (5 mm) or greater be maintained behind the display. 2 LC640.480.21-065 Operations Manual (OM610-00) Ambient Light Sensor Clearance Two backlight dimming modes utilize automatic brightness control. If the display is to be operated in either of these modes, the ambient light sensor located on the front bezel must be unobstructed. If the sensor is placed behind the same protective window as the display active (viewing) area, the sensor operation may be affected due to light scattering and reflections from display-generated light coupling to the sensor via the window. Cable Length Due to the high frequencies present on the video interface, unterminated video cable lengths of more than 12 inches (300 mm) are discouraged. Cleaning Care should be taken to minimize scratching. Clean the display front with a dry, soft cloth such as a professional photographic lens cleaner. Disposable cleaning cloths are recommended to minimize the risk of inadvertently scratching the display with particles embedded in a re-used cloth. Particular care should be taken when cleaning displays with polarizers or anti-glare and anti-reflective films. These films may delaminate if exposed to certain chemicals. Avoiding Image Retention Image retention may occur when a fixed pattern is displayed for a long time. Use a screen saver or image inversion to avoid image retention on the display. LC640.480.21-065 Operations Manual (OM610-00) 3 Specifications Performance characteristics are guaranteed with the display at room temperature (25 °C) and with the operating voltage within specifications, unless otherwise specified. Optical performance is referenced to screen center at normal incidence with a full white screen display and the backlight at maximum luminance, 60Hz LCD frame rate, unless otherwise specified. Environmental Characteristics Table 2. Environmental Characteristics. Temperature Operating Operating survival Storage Humidity -20 to +71 °C (-40 to +71°C with cell heater/version -01) -40 to +85 °C, 2 hrs. maximum -45 to +90 °C, 24 hrs. maximum 93% RH @ 40 °C, non-condensing, 10 days per IEC 68-2-3 0 to 95% RH @ 25-55 ºC, 6 days per IEC 68-2-30 0 to 10k ft. per IEC 68-2-13 0 to 40k ft. per IEC 68-2-13 0.02 g /Hz, 5-500 Hz, 30 min. ea. axis, per IEC 68-2-34 Specific profiles for each axis, SAE J1455, section 4.9 100 g, 6 ms, half sine wave, 3 shocks per surface, per IEC 68-2-27 2 Operating Non-operating Altitude Operating Non-operating Vibration (random) Operating/Non-operating Shock Operating/Non-operating Safety and EMI Certifications The display will not inhibit the end product from compliance with UL1950, CSA22.2, and IEC950. When housed in a suitable enclosure, the display will not inhibit the end product from complying with FCC Part 15, Subpart J Class B, EN55022 Class B, or SAE-J-1113. Reliability and Backlight Life The demonstrated system MTBF is to be greater than 30,000 hours with a 90% confidence level at 25 °C. Refer to Table 3 for backlight life. Table 3. Backlight Life. Usage Backlight life (typical to 50% of initial luminance) Continuous at full luminance Continuous at half luminance Typical use using CBM* * Controlled luminance mode 20K hours 60K hours 50K hours @ 700 cd/m2 4 LC640.480.21-065 Operations Manual (OM610-00) Mechanical Characteristics Refer to mechanical outline drawing in Figure 23 on page 33. All size measurements shown in Table 3 are in millimeters (inches). Table 4. Mechanical Characteristics. Display External Dimensions width height depth 178.8 (7.04 ) nominal 126.8 (4.99) nominal 38.3 (1.51) nominal 470 g (1.05 lbs.) Weight (normal) Display Active Area width height diagonal Pixel Pitch 132.48 (5.22) nominal 99.36 (3.91) nominal 165.10 (6.5) .207 (0.008) nominal .207 (0.008) nominal width height LC640.480.21-065 Operations Manual (OM610-00) 5 Optical Characteristics Table 5. Optical Characteristics. Luminance (at screen center) 3 cd/m2 minimum, 1000 cd/m2 maximum (initial) Standard (typical) 1 Controlled (typical) 3 cd/m2 minimum, 700 cd/m2 maximum Contrast Ratio Dark room ambient 500 Lux ambient 5K Lux ambient 20K Lux ambient Color Coordinates 150: 1 typical, 80:1 minimum 92:1 typical 12:1 typical 4:1 typical x = .362 typical; y = .370 typical With a white screen, max difference between any 2 of 5 points is defined as follows: Lnu (%) = (1- (Lmin/Lmax)) x 100% 50:1 initial, 300:1 stabilized (Lmax after > 15 minutes at max. lum., then Lmin at min. lum; dimming range = Lmax/Lmin) Visible light filtered ~420 to 675nm @ 50% pts. ±50 degrees typical to half sensitivity 0 to 3000 Lux typ.; assumes 18% scene reflectance ±50 degrees typ., White/black CR 10 +35/-45 degrees typ., White/black CR 10 White field Luminance Non-uniformity 25% maximum Luminance Control (typical)) Dimming range Ambient Light Sensor Response Field of view Dynamic range Viewing Angles Horizontal Vertical (See Figure 1) 1 The contrast brightness mode regulates backlight luminance via feedback over the life of the lamps. The lamp and luminance life will vary depending on the chosen controlled luminance level. For more information, see "Backlight Dimming" on page 20. 6 LC640.480.21-065 Operations Manual (OM610-00) Viewing Angles Figure 1. Viewing Angles. Normal Line -V -H +V +H where: +H -H +V -V +Horizontal angle (+50) -Horizontal angle (-50) +Vertical angle -Vertical angle (+35) (-45) and R/L and U/D = default 6 o'clock direction Response Times As shown in Figure 2, the rise response time (from white to black) is 40 ms typical and the fall response time (from black to white) is 50 ms typical. Figure 2. Response Times. white Photodetector output (Relative Value) black white 100% 90% r = Rise (wht to blk): 40 ms typ f = Fall (blk to wht): 50 ms typ 10% 0% r f time LC640.480.21-065 Operations Manual (OM610-00) 7 Interfacing and Operation Control Basics Power Requirements The LC640.480.21-065 display requires two power supplies: +5 Vdc for the LCD logic and +12 Vdc for the backlight. In Table 6 below, the backlight current and power are referenced to maximum luminance, 25 °C ambient temperature. Table 6. Input Power Symbol Panel Min Typ Max Units Panel voltage (nominal = 5.0V) Absolute max. VCC ICC (VCC = 5.0V) Inverter VCC VCC ICC VINV VINV IINV VLH ILH VLH ILH 4.75 -0.3 ­ 8.0 ­ ­ 8.0 ­ 8.0 ­ 5.0 ­ 470 12.0 ­ 1.6 12.0 2.0 12.0 1.0 5.25 6.5 640 18.0 20.0 1.8 18.0 3.0 18.0 1.5 Vdc Vdc mAdc Vdc Vdc Adc Vdc Adc Vdc Adc Inverter voltage (nominal = +12.0V) Absolute max. voltage Current (VINV = 8.0V, max. luminance) Backlight Backlight heater voltage Backlight heater current Cell heater voltage Cell heater current CAUTION: Absolute maximum ratings are those values beyond which damage to the device may occur. 8 LC640.480.21-065 Operations Manual (OM610-00) Power Sequencing (LCD) When performing power sequencing: · Ensure the supply voltage for input signals is the same as for VCC. · Apply VCC within the LCD operation period. When the backlight turns on before LCD operation or the LCD operation turns off before the backlight turns off, the display may momentarily become white. · When the power is off, keep whole signals (Hsync, Vsync, CLK, DE, and DATA) low level or high impedance. Figure 3. Power Sequencing. SUPPLY VOLTAGE SEQUENCE VCC 4.75 V 0V t<150 ms 0