User manual PLANAR LC640.480.33-AC Operations Manual

[. . . ] Operations Manual LC640. 480. 33-AC HIGH BRIGHTNESS 10. 4" COLOR TFT AMLCD ® The Definition of Quality Copyright © 1999 by Planar Systems, Inc. Planar provides this information as reference only and does not imply any recommendation or endorsement of other vendor's products. Revision Control Date Description May 1999 Document number OM600-01 Contents LC640. 480. 33-AC Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Features and Benefits. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Installation and Handling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] 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. 33-AC Operations Manual (OM600-01) 5 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 and with the backlight at maximum luminance unless otherwise specified. Environmental Characteristics Table 2. Environmental Characteristics. Temperature Operating Operating survival Storage Humidity -10 to +70 °C -20 to +80 °C -25 to +85 °C 95% RH @ 40 ºC, Non-condensing, per IEC 68-2-3 10K ft per IEC 68-2-13 40K ft per IEC 68-2-13 0. 02 g /Hz, 5-500 Hz, 30 min. axis, per IEC 68-2-34 100 g, 6 ms, half sine wave, 3 shocks per surface, per IEC 68-2-27 2 Operating Altitude Operating Non-operating Vibration (random) Operating Shock Operating Mechanical Characteristics Refer to mechanical outline drawing in Figure 15 on page 24. Table 3. Mechanical Characteristics. Display External Dimensions (millimeters (inches)) width height depth 272. 3 (10. 72) nominal 199. 9 (7. 87) nominal 27. 0 (1. 06) nominal 900 g (31. 7oz) Weight (typical) Display Active Area (millimeters (inches)) width height Pixel Pitch 211. 2 (8. 31) nominal 158. 4 (6. 24) nominal (millimeters (inches)) width height . 33 (. 0129) nominal . 33 (. 0129) nominal 6 LC640. 480. 33-AC Operations Manual (OM600-01) Optical Characteristics Table 4. Optical Characteristics. Luminance Typical Minimum Contrast Ratio 1000 NITs at screen center, initial 900 NITs at screen center, initial 200: 1 typical, 150:1 minimum 150:1 typical 50:1 typical 3:1 typical x = . 339 typical y = . 353 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, 100:1 stabilized (Lmax after > 15 minutes at max. 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 ±70 degrees typ. , White/black CR 5 +40/-60 degrees typ. , White/black CR 5 Dark room ambient 500 Lux ambient 3K Lux ambient 100K Lux ambient Color Coordinates White field Luminance Non-uniformity 31% maximum Luminance Control (typical) Dimming range Ambient Light Sensor Response Field of view Dynamic range Viewing Angle Horizontal Vertical (See Figure 10) Safety and EMI The display will not inhibit the end product from compliance with UL1950, CSA22. 2, and IEC950. The display will not inhibit the end product from complying with FCC Part 15, Subpart J, Class B or EN55022 Class B when housed in a suitable enclosure. Reliability and Backlight Life The demonstrated system MTBF is to be greater than 30, 000 hours with a 90% confidence level at 25 °C. Backlight Life. Usage Backlight life (typical to 50% of initial luminance) Continuous at full luminance Continuous at half luminance Typical use using ABC* * Automatic brightness control 20K hours 100K hours 35K hours LC640. 480. 33-AC Operations Manual (OM600-01) 7 Interfacing and Operation Control Basics Power Requirements The LC640. 480. 33-AC 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 Backlight Min Typ Max Units Backlight voltage Absolute max. voltage Steady state current (VH = +12 Vdc) Peak start-up current (VH = +12 Vdc) Power (VH = +12V) LCD VH VHMAX IH IHSU PH VL VLMAX VL IL PL +10. 8 0 ­ ­ ­ 4. 5 0 ­ ­ ­ +12. 0 ­ 1. 9 ­ 23 +5. 0 ­ ­ 280 1. 4 +13. 2 +16 2. 5 3. 5 30 +5. 5 6. 0 100 450 2. 3 Vdc Vdc Adc Adc W Vdc Vdc mVpp mAdc W LCD voltage Absolute max. voltage VL permissible ripple (VL = +5V) Current (VL = +5V) Power (VL = +5V) CAUTION: Absolute maximum ratings are those values beyond which damage to the device may occur. Undervoltage Lockout (Backlight only) An undervoltage lockout (UVLO) function is included which disables the backlight under excessively low VH conditions. The UVLO circuit will disable the backlight at approximately +8. 5 Vdc as VH falls and will enable the backlight at approximately +9. 5 Vdc as VH rises. Power Sequencing (LCD only) Certain restrictions on the behavior of the VL (+5 Vdc) source and in the application of the VL source relative to the application or removal of the video signals must be observed. These restrictions are shown in Figure 2, where "Vcc"= VL and "data" = video signals. 8 LC640. 480. 33-AC Operations Manual (OM600-01) Figure 2. Power Sequencing. 4. 5V 2. 7V Vcc 4. 5V data where: t1 10ms 0< t2 10ms 0< t3 1s t1 t2 t3 Applying video signals before VL is applied may cause a latchup condition. Allowing VL to remain "on" for a long period of time after video signals are removed--which stops the cell scanning--may produce a latent image. In addition, there is a restriction regarding dropouts on the VL supply as illustrated in Figure 3 ("Vcc"= VL). This is related to the reset circuit for the LCD's internal logic. If a dip in VL exceeds 10 ms in duration or VL falls below 2. 7 Vdc then the power sequencing procedure should be followed. Figure 3. [. . . ] The LC640. 480. 33-AC has been designed to provide peak luminance at normal room temperatures. Backlight power consumption decreases as temperatures climb as the working voltage of the CCFL tubes decreases. The graph in Figure 13 indicates typical performance across temperature. Figure 13. Temperature 100 90 80 70 60 50 40 30 20 10 0 -20 -10 0 10 20 30 ta, C 40 50 60 70 80 30. 0 25. 0 20. 0 15. 0 10. 0 5. 0 0. 0 Lum, % PH, W Backlight Power, W 22 LC640. 480. 33-AC Operations Manual (OM600-01) Luminance, % Warm-up Characteristic Some time after startup is required to allow the CCFL tubes to reach their normal operating temperature. [. . . ]