Lcd Tft
Lcd Tft
 |
| Samsung 18G241400222Q Asus Lcd Tft 140 Hd Glare Leda+ Lcd Panel bracket Up A | |
 |
$228.80 Time Remaining: 31m Buy It Now for only: $228.80 Buy It Now |
| 7TFT LCD Color Monitor Mirror Car Rear View Night Vision Backup Camera | |
 |
$53.59 Time Remaining: 31m Buy It Now for only: $53.59 Buy It Now |
| US Fast Ship 7 TFT LCD Car Rear View Monitor System + BACKUP REVERSING CAMERA | |
 |
$52.52 Time Remaining: 31m Buy It Now for only: $52.52 Buy It Now |
| 7 TFT LCD Color Car Rearview Headrest Monitor + BACKUP REVERSING CAMERA | |
 |
$52.52 Time Remaining: 31m Buy It Now for only: $52.52 Buy It Now |
| NEW 7 TFT LCD REAR VIEW MIRROR CAMERA SYSTEM MONITOR+BACK UP IR CAMERA | |
 |
$53.59 Time Remaining: 31m Buy It Now for only: $53.59 Buy It Now |
| 7 TFT LCD Car Rear View Mirror Monitor System Camera Best Choice for your Car | |
 |
$52.52 Time Remaining: 31m Buy It Now for only: $52.52 Buy It Now |
| New HD 800480 7 TFT LCD Color Car Rear View Reverse Mirror Monitor | |
 |
$52.52 Time Remaining: 32m Buy It Now for only: $52.52 Buy It Now |
| HIGH QUALITY 7 TFT LCD MONITOR+CAMERA CAR REAR VIEW MIRROR KIT WATERPROOF | |
 |
$52.52 Time Remaining: 32m Buy It Now for only: $52.52 Buy It Now |
| CAR REAR VIEW BACKUP CAMERA KIT 7 TFT LCD MIRROR MONITOR + Night Vision CAMERA | |
 |
$53.60 Time Remaining: 32m Buy It Now for only: $53.60 Buy It Now |
| Car Rear View Kit 7 TFT LCD Monitor + IR Reversing Vision Color Camera | |
 |
$52.52 Time Remaining: 32m Buy It Now for only: $52.52 Buy It Now |
| 7 TFT COLOR LCD SCREEN MONITOR FOR CAR REAR VIEW REVERSING CAMERA SECURITY | |
 |
$52.52 Time Remaining: 32m Buy It Now for only: $52.52 Buy It Now |
| Brand New CAR REAR VIEW KIT 7 TFT LCD MONITOR + REVERSING Mirror CAMERA | |
 |
$52.52 Time Remaining: 32m Buy It Now for only: $52.52 Buy It Now |
| 7 TFT LCD Color Screen mirror Monitor rearview For DVD VCR Car Camera | |
 |
$52.52 Time Remaining: 32m Buy It Now for only: $52.52 Buy It Now |
| 7 inch TFT LCD Color Car Rearview Mirror Monitor DVD VCR VCD Backup Camera | |
 |
$52.53 Time Remaining: 32m Buy It Now for only: $52.53 Buy It Now |
| 7TFT LCD Car Video Rear View Color Backup Reverse Mirror Monitor Camera | |
 |
$52.53 Time Remaining: 32m Buy It Now for only: $52.53 Buy It Now |
| LTP256QV F01 LTP256QV New TFT LCD Screen U | |
 |
$99.99 Time Remaining: 36m Buy It Now for only: $99.99 Buy It Now |
| 32 TFT LCD Module+touch panel+PCB SD Socket | |
 |
$21.50 Time Remaining: 38m Buy It Now for only: $21.50 Buy It Now |
| 35 TFT LCD Dashboard rearview Monitor For car Camera HIGH QUALITY | |
 |
$20.24 Time Remaining: 40m Buy It Now for only: $20.24 Buy It Now |
| 35 TFT LCD Dashboard rearview Monitor For car Camera 100 TESTED | |
 |
$20.24 Time Remaining: 40m Buy It Now for only: $20.24 Buy It Now |
| 7 TFT LCD Car Rearview Headrest Monitor DVD VCR GPS | |
 |
$42.49 Time Remaining: 50m Buy It Now for only: $42.49 Buy It Now |
| AC power adapter Compaq TFT1720 TFT 1720 LCD monitor | |
 |
$16.54 Time Remaining: 1h Buy It Now for only: $16.54 Buy It Now |
| AC power adapter Compaq TFT1725 TFT 1725 LCD monitor | |
 |
$16.30 Time Remaining: 1h Buy It Now for only: $16.30 Buy It Now |
| AC POWER SUPPLY CORD Compaq TFT1501 1501 LCD monitor | |
 |
$14.99 Time Remaining: 1h 3m Buy It Now for only: $14.99 Buy It Now |
| 1080P LCD Projector Video Home Theater HDMI SD USB DVB T TV WII PS3 5 TFT LCD | |
 |
$235.87 Time Remaining: 1h 7m Buy It Now for only: $235.87 Buy It Now |
| POWER SUPPLY AC MPC computers TFT1780 LCD monitor | |
 |
$14.99 Time Remaining: 1h 10m Buy It Now for only: $14.99 Buy It Now |
| POWER SUPPLY AC MPC computers TFT1980 LCD monitor | |
 |
$16.36 Time Remaining: 1h 10m Buy It Now for only: $16.36 Buy It Now |
| NEW Lcd SHARP TFT 84LQ9D011 LQ9D011K 90 days warranty | |
 |
$100.00 Time Remaining: 1h 12m Buy It Now for only: $100.00 Buy It Now |
| POWER SUPPLY ADAPTER AC Compaq TFT1501 1501 LCD monitor | |
 |
$14.99 Time Remaining: 1h 15m Buy It Now for only: $14.99 Buy It Now |
| POWER SUPPLY ADAPTER AC Compaq TFT5017 TFT5017M LCD | |
 |
$14.99 Time Remaining: 1h 15m Buy It Now for only: $14.99 Buy It Now |
| POWER SUPPLY ADAPTER AC Compaq TFT7020 TFT 7020 LCD | |
 |
$14.99 Time Remaining: 1h 15m Buy It Now for only: $14.99 Buy It Now |
| POWER SUPPLY ADAPTER AC Envision EN 7100S TFT1780 LCD | |
 |
$14.99 Time Remaining: 1h 17m Buy It Now for only: $14.99 Buy It Now |
| 24TFT LCD 24G Antenna Color Video Wireless Doorbell Intercom Home | |
 |
$199.89 Time Remaining: 1h 21m Buy It Now for only: $219.89 Buy It Now | Bid now |
| 25 TFT LCD WRIST CAMERA CCTV TESTER MONITOR TESTING | |
 |
$54.72 Time Remaining: 1h 21m Buy It Now for only: $54.72 Buy It Now |
| POWER SUPPLY ADAPTER AC Micron TFT1780 LCD monitor DC | |
 |
$14.99 Time Remaining: 1h 22m Buy It Now for only: $14.99 Buy It Now |
| 25 LCD TFT HD720p Car Camera Monitor DVR Recorder y | |
 |
$49.50 Time Remaining: 1h 22m Buy It Now for only: $49.50 Buy It Now |
| 24GHz Wireless Car Rear View Camera Kit with 35 inch TFT LCD Monitor 004 | |
 |
$67.98 Time Remaining: 1h 23m Buy It Now for only: $67.98 Buy It Now |
| 15 23 Lcd Plasma Tv Wall Bracket Tft Mount Swivel Tilt | |
 |
$20.73 Time Remaining: 1h 29m Buy It Now for only: $20.73 Buy It Now |
| 121 Toshiba LTD121EWEK LT121EE01000 LCD Screen Display 1280800 TFT | |
 |
$222.88 Time Remaining: 1h 30m Buy It Now for only: $222.88 Buy It Now |
| POWER SUPPLY ADAPTER AC X2gen TFT MO 141 LCD monitor | |
 |
$14.99 Time Remaining: 1h 31m Buy It Now for only: $14.99 Buy It Now |
| 28 inch TFT LCD CCTV Multi function Tester Detector | |
 |
$171.00 Time Remaining: 1h 33m Buy It Now for only: $171.00 Buy It Now |
| LAPTOP COMPUTER LCD TFT TV SCREEN NOTEPAD CLEANING KIT | |
 |
$14.99 Time Remaining: 1h 35m Buy It Now for only: $14.99 Buy It Now |
| 43 TFT LCD Module + Touch Panel + AV2 VGA Driving Board with Remot Control | |
 |
$42.99 Time Remaining: 1h 37m Buy It Now for only: $42.99 Buy It Now |
| INNOLU TFT AT056TN53 V1 LCD Screen Display Panel | |
 |
$52.80 Time Remaining: 1h 39m Buy It Now for only: $52.80 Buy It Now |
| 35 TFT LCD Dashboard rearview Monitor For car Camera best service | |
 |
$20.24 Time Remaining: 1h 48m Buy It Now for only: $20.24 Buy It Now |
| 35 TFT LCD Dashboard rearview Monitor For car Camera very popular amazing | |
 |
$20.24 Time Remaining: 1h 48m Buy It Now for only: $20.24 Buy It Now |
| 11 TFT LCD Color TV Monitor 1CH Audio Video VGA RCA | |
 |
$169.99 Time Remaining: 1h 49m Buy It Now for only: $169.99 Buy It Now |
| Wireless 43 TFT LCD Clip on Mirror monitor rear view system+ Backup camera | |
 |
$95.99 Time Remaining: 1h 50m Buy It Now for only: $95.99 Buy It Now |
| LTD121EC5S TOSHIBA 121 XGA 1024768 TFT LCD PANEL | |
 |
$130.00 Time Remaining: 1h 52m Buy It Now for only: $130.00 Buy It Now |
| 4set 7 TFT LCD car rearview headrest monitor for VCR GPS hot seller | |
 |
$140.12 Time Remaining: 1h 57m Buy It Now for only: $140.12 Buy It Now |
| Apple iphone 2G 35 TFT LCD Panel Screen 4GB 8GB 16GB | |
 |
$25.99 Time Remaining: 1h 59m Buy It Now for only: $25.99 Buy It Now |
| Brand New 22 TFT LCD Roof Flip Down Overhead Car Truck Monitor Screen IR GTC | |
 |
$206.00 Time Remaining: 2h 3m Buy It Now for only: $206.00 Buy It Now |
| 7 TFT LCD Car Rearview Headrest Monitor for DVD VCR high quality | |
 |
$40.17 Time Remaining: 2h 4m Buy It Now for only: $40.17 Buy It Now |
| CMOS 50Mega pixels 15MP digital camera DC with 3xOptical Zoom and 27 TFT LCD | |
 |
$85.00 Time Remaining: 2h 4m Buy It Now for only: $85.00 Buy It Now |
| 1280P Car HD DVR TFT 25 LCD 6 IR Camera Video Recorder New | |
 |
$25.99 Time Remaining: 2h 5m Buy It Now for only: $25.99 Buy It Now |
| 35 TFT LCD Car Monitor+ 4 Parking sensor kit Rear view alarm distance displa | |
 |
$83.99 Time Remaining: 2h 8m Buy It Now for only: $83.99 Buy It Now |
| Toppoly 22 TFT LCD Panel Screen TD022SHEB2 60H00025 00 | |
 |
$22.99 Time Remaining: 2h 8m Buy It Now for only: $22.99 Buy It Now |
| 25 LCD TFT Car HD Camera DVR Car Black Box | |
 |
$9.99 Time Remaining: 2h 8m |
| LCD Screen Display Panel AT080TN03 V2 Innolux TFT | |
 |
$62.00 Time Remaining: 2h 23m Buy It Now for only: $62.00 Buy It Now |
| Mini 43 TFT LCD Rearview Camera Monitor fr car camera | |
 |
$17.89 Time Remaining: 2h 25m Buy It Now for only: $17.89 Buy It Now |
| LCD Screen Display Panel AT080TN03 V8 Innolux TFT | |
 |
$61.50 Time Remaining: 2h 27m Buy It Now for only: $61.50 Buy It Now |
| LB064V02 TD01 LG Philips LCD Screen Display Panel TFT | |
 |
$143.00 Time Remaining: 2h 31m Buy It Now for only: $143.00 Buy It Now |
| 6 IR LED 25 TFT Color LCD HD Car DVR Nightvision Camera Recorder 270 Whirl | |
 |
$25.99 Time Remaining: 2h 47m Buy It Now for only: $25.99 Buy It Now |
| New 160 MP Speed HD DV Digital Video Camera 30TFT LCD Camcorder Red HD A70 | |
 |
$74.70 Time Remaining: 2h 49m Buy It Now for only: $74.70 Buy It Now |
| 7 TFT LCD Color Mirror Rearview DVD VCR camera Monitor | |
 |
$28.38 Time Remaining: 2h 54m Buy It Now for only: $28.38 Buy It Now |
| HP EM886A8ABA 17Inch TFT Active Matrix LCD Display 1280X1024 | |
 |
$136.83 Time Remaining: 2h 58m Buy It Now for only: $136.83 Buy It Now |
| Apple iphone 3GS 35 TFT LCD Panel Screen 16 32 GB OEM | |
 |
$19.99 Time Remaining: 2h 59m Buy It Now for only: $19.99 Buy It Now |
| 35 TFT LCD Car Monitor+ 4 Parking sensor kit Rear view alarm distance display | |
 |
$84.89 Time Remaining: 3h Buy It Now for only: $84.89 Buy It Now |
| AC Adapter For Acer AL711 AL1722 AL1951 TFT13 LCD Monitor Charger Power Supply | |
 |
$9.99 Time Remaining: 3h 8m Buy It Now for only: $9.99 Buy It Now |
| 7TFT Car GPS Navigation LCD Touch Screen Vehicle Tracking AV Bluetooth IP 709 | |
 |
$48.99 Time Remaining: 3h 10m |
| New 7 inch TFT LCD Digital Photo Movies Frame Alarm Clock MP3 MP4 Player Light | |
 |
$37.49 Time Remaining: 3h 11m Buy It Now for only: $37.49 Buy It Now |
| 7in1 35 TFT LCD Monitor CCTV Camera PTZ Tester STest 895 | |
 |
$449.99 Time Remaining: 3h 13m Buy It Now for only: $449.99 Buy It Now |
| 7TFT Car GPS Navigation LCD Touch Screen Vehicle Tracking AV Bluetooth IP 708 | |
 |
$48.99 Time Remaining: 3h 13m |
| 28 TFT LCD handheld multifunction CCTV Video PTZ Tester Stest891 | |
 |
$206.00 Time Remaining: 3h 13m Buy It Now for only: $206.00 Buy It Now |
| 60W AC Adapter For HP Compaq L1510 L1520 TFT5010 TFT5010i L1720 L1750 LCD | |
 |
$10.69 Time Remaining: 3h 13m Buy It Now for only: $10.69 Buy It Now |
| 7 Car Rear View Mirror TFT LCD Monitor Palyer Touch Button USB SD Card slot | |
 |
$79.99 Time Remaining: 3h 20m Buy It Now for only: $79.99 Buy It Now |
| 35 TFT LCD CCTV Fiber Optical Security Tester PRO STest 896 | |
 |
$309.99 Time Remaining: 3h 21m Buy It Now for only: $309.99 Buy It Now |
| MINI DVR +Spy Button CAMERA Portable Video Recorder WE5 AV 25 TFT LCD Display | |
 |
$109.99 Time Remaining: 3h 26m Buy It Now for only: $109.99 Buy It Now |
| 5TFT Car GPS Navigation LCD Touch Screen Vehicle Tracking AV Bluetooth IP 589 | |
 |
$39.99 Time Remaining: 3h 32m |
| 43 Inch Screen Car TFT LCD Monitor For Car Reverse Rear View Backup Camera | |
 |
$22.86 Time Remaining: 3h 34m Buy It Now for only: $22.86 Buy It Now |
| Brand New 7 TFT LCD Color Car Rearview Headrest Monitor DVD VCR GPS With Remote | |
 |
$36.49 Time Remaining: 3h 35m Buy It Now for only: $36.49 Buy It Now |
| Lilliput 7TFT LCD On Camera HD Touch Screen Monitor with HDMI DVI VGA AV Input | |
 |
$230.00 Time Remaining: 3h 37m Buy It Now for only: $230.00 Buy It Now |
| New 4GB 24 TFT LCD FM Transmitter Car MP3 MP4 MP5 Player bundle | |
 |
$28.70 Time Remaining: 3h 38m Buy It Now for only: $28.70 Buy It Now |
| New 43 TFT LCD Car Monitor Reverse Rearview Color Camera DVD VCR CCTV LED | |
 |
$22.86 Time Remaining: 3h 42m Buy It Now for only: $22.86 Buy It Now |
| New 70 DVD VCR TFT LCD Color Monitor For Car Reverse Rearview Backup Camera | |
 |
$36.49 Time Remaining: 3h 42m Buy It Now for only: $36.49 Buy It Now |
| NEW 12V 3A LCD TFT Monitor Adapter Supply Cord for Dell | |
 |
$11.15 Time Remaining: 3h 45m Buy It Now for only: $11.15 Buy It Now |
| Gateway 2523413R 154 Laptop LCD Screen WXGA TFT | |
 |
$199.00 Time Remaining: 3h 47m Buy It Now for only: $199.00 Buy It Now |
| New AC Adapter 12V 4A for LCD TFT Monitors + Power Cord | |
 |
$11.15 Time Remaining: 3h 48m Buy It Now for only: $11.15 Buy It Now |
| 25 inch TFT LCD Screen HD 720p Portable Car DVR Blackbox Support Night Vision | |
 |
$29.99 Time Remaining: 3h 53m Buy It Now for only: $29.99 Buy It Now |
| 7 LCD Field 1080P HD On Camera Monitor HDMI YPrPb Peaking Filter Focus Assist | |
 |
$209.99 Time Remaining: 3h 54m Buy It Now for only: $209.99 Buy It Now |
| 55mm Pipe Tube Snake Camera DVR Inspection Borescope w 24 Inch LCD TFT Monitor | |
 |
$303.32 Time Remaining: 3h 56m Buy It Now for only: $303.32 Buy It Now |
| 7 LCD Field 1080P HD On Camera Monitor HDMI YPrPb Peaking Filter F970 Battery | |
 |
$229.99 Time Remaining: 3h 59m Buy It Now for only: $229.99 Buy It Now |
| 43 TFT LCD color monitor Car Rear View Camera with tracking number Free Ship | |
 |
$37.99 Time Remaining: 3h 59m Buy It Now for only: $37.99 Buy It Now |
| CE Portable Digital 3 channel Touch Screen TFT Color LCD EKG ECG with Software | |
 |
$499.00 Time Remaining: 3h 59m Buy It Now for only: $499.00 Buy It Now |
| 7 TFT LCD 2 CH Video Input Touch Buttons Car Rearview Headrest DVD VCR Monitor | |
 |
$37.99 Time Remaining: 4h 3m Buy It Now for only: $37.99 Buy It Now |
| CE Portable Digital 3 channel Touch Screen TFT Color LCD EKG ECG with Software 1 | |
 |
$499.00 Time Remaining: 4h 3m Buy It Now for only: $499.00 Buy It Now |
| NEW HD 7 LCD Field 1080P On Camera Monitor SLR HDMI In+Out YPrPb Peaking Filter | |
 |
$229.99 Time Remaining: 4h 4m Buy It Now for only: $229.99 Buy It Now |
| 43 Car Rear view Camera TFT LCD Color Monitor Free Shipping | |
 |
$37.79 Time Remaining: 4h 6m Buy It Now for only: $37.79 Buy It Now |
| G104SN02 V0 TFT LCD Screen Display Panel with 90 days warranty | |
 |
$120.00 Time Remaining: 4h 14m Buy It Now for only: $120.00 Buy It Now |
| 4 PIN 60W 5A ADAPTER HP Compaq L1510L1520TFT5010 LCD | |
 |
$16.88 Time Remaining: 4h 14m Buy It Now for only: $16.88 Buy It Now |
is a screen saver required to be used in TFT-LCD monitors also?
i mean screen savers were made so as to protect primitive cathode ray tube monitors from getting damaged. are modern tft-lcd monitors also damaged in some way if they continue to display the same image for a long time?
With LCD monitors you don't have a threat of burn-in on the screen so you don't need a screen saver.
LCD Monitor Technology
1. What is the important factor to consider when evaluating an LCD monitor?
Resolution: The horizontal and vertical size expressed in pixels (e.g. 1024x768). Unlike CRT monitors, LCD monitors have a native-supported resolution for best display effect.
Dot pitch: The distance between the centers of two adjacent pixels. The smaller the dot pitch size, the less granularity is present, resulting a sharper image. Dot pitch may be the same both vertically and horizontally, or different (less common).
Viewable size: The size of an LCD panel measured on the diagonal (more specifically nown as active display area).
Response Time: The minimum time necessary to change a pixel's color or brightness.
Matrix type: Active or Passive.
Viewing angle: (coll., more specifically known as viewing direction).
Color support: How many types of colors are supported (coll., more specifically known as color gamut).
Brightness: The amount of light emitted from the display (coll., more specifically known as luminance).
Contrast ratio: The ratio of the intensity of the brightest bright to the darkest dark.
Aspect ratio: The ratio of the width to the height (e.g. 4 by 3, 16 by 9, 16 by 10, etc.).
Input ports (e.g. DVI, VGA, LVDS, or even S-Video & HDMI).
2. How do I know what type of LCD to use for our product?
That will really depends on a number of factors including multiplex driving scheme, temperature, voltage/power, artwork design, contrast requirements and cost budget. The main categories which we may supply by our own facility are: TN, HTN, STN, and also special product such as cholesteric bi-stable displays and single polarizer high contrast reflective TN/HTN display.
3. What is life time of LCD and backlight?
Very long, in most cases, providing the operating condition is stable, the LCD may operates for years. Just for reference, below is typical life time for displays:
LCD LED EL CCFL Current Consumptions N/A High (7.5mA per die) Low (0.12mA/cm2) Low Service Life >80,000 hrs Long > 30,000 hrs Short (typical 5,000 hrs) Long (typical 30,000 hrs) Driving Characterisitics AC DC AC AC Brightness N/A Low to medium Low to medium High
4. What is thickness of LCD and glasses?
Thickness of LCD depends on stacking height. Typical standard structure of LCD consists of:Layer Description
1 Top Polarizer with thickness of approximately 0.08mm~0.15mm
2 Top Glass with thickness between 0.5mm and 1.1mm typical
3 Liquid crystal cell with thickness negligible (4 to 9 micron)
4 Bottom Glass with thickness between 0.5mm and 1.1 mm typical
5 Bottom polarizer with or without reflector
5. What is a TFT-LCD?
TFT-LCD (thin film transistor liquid crystal display) is a variant of liquid crystal display (LCD) which uses thin film transistor (TFT) technology to improve image quality. TFT LCD is one type of active matrix LCD, though it is usually synonymous with LCD. It is used in televisions, flat panel displays and projectors.
6. What types of connectors are used in LCDs?
The connectors used for LCDs are elastomeric (rubber connector), pin and flexible cable.
7. How many types of viewing modes are used in LCD glass?
There are three types of basic modes:
"Reflective", "Trans-missive", and "Trans-flective". " Tran-missive" and "Trans-flective" are used with an LED, EL, or CCFL backlight.
8. Is temperature a matter of concern in LCDs?
Yes, since the LCDs are widely used, some of the applications will be in extreme weather conditions where a wide temperature range is required. Normally the wide temperature range for a TN type LCD is -30 ~ 75C (operation Temp.) and -30 ~ 70C (storage temp.)
9. Why does my LCD turns dark when left under the sun and are there any problems with the display?
For most cases, both TN, HTN and STN utilize the phase known as nematic for display purpose. Within this phase, the liquid crystal has a "rod shape" exists within the solution which has fast response and has excellent electro-optic properties. This phase, however, only exists within a limited temperature range. The higher end of this temperature range is known as clearing point, above which, the liquid crystal lost its birefrigerance properties and cannot bend the light path anymore. Thus the polarizer will then be the only factor which affect incoming and out coming light. When the LCD is cooled down to below its clearing point, the display should be working again. The temperature for the clearing point varies greatly from material to material and you should contact our engineers regarding what you have. Normally a safe margin should be used to avoid clearing point when designing the display.
10. How does LCD get driven?
LCD is driven by AC (alternating current), it is best to use standard LCD driver IC to generate as this will simplified your development time. Alternatively, for simple TN segment drive, most MCU may emulate the AC current but would need a lot of background know how. For example, simple TN segment drive would require as low as 40Hz to as high as 120 Hz. Depending on the operating environment such as temperature and would affect the contrast of the display. Some experiment may be needed to find the optimum operating condition.
11. What test is done to LCD?
Standard tests and control includes
1. 100% Electrical test (that test for operating voltage, logic of display)
2. Dimensional and cosmetic inspection including viewing angle
3. Sample inspection using thermal, thermal cycle, and humidity
12. Does UV light affect LCDs?
The answer really depends on material selection and configuration. Because liquid crystal is primarily organic compounds, most liquid crystal material are susceptible to UV disintegration. There are some liquid crystal which are specially design for outdoor application that is more UV resistance. When use with UV blocking polarizer, the LCD can be resistance to ultra violet damage.
13. What other factors may affect life of LCD?
Two factors:
1. Moisture - extreme moisture exposure will cause sodium migration in the glass which will contaminate the liquid crystal, often result in increase of current and effect extrusion of ITO patterns.
2. Heat - as the polarizer is made of plastic (often Mylar based material), heat will distress the polarizer which will eliminate the polarizing effect. Special iodine type polarizer may be necessary to use at cost of lower polarizing efficiency (thus darker and diminishing contrast). This is trade off one must take when specify the product. The cut off is normally at around +85 degree centigrade.
14. What is Luminance?
Luminance is a photometric measure of the density of luminous intensity in a given direction. It describes the amount of light that passes through or is emitted from a particular area, and falls within a given solid angle. The SI unit for luminance is candela per square meter (cd/m2). The CGS unit of luminance is the stilb, which is equal to one candela per square centimeter or 10 kcd/m2.
15. What is Contrast Ratio (CR)?
The contrast ratio is a measure of a display system, defined as the ratio of the luminosity of the brightest color to the luminosity of the darkest color that the system is capable of producing. High contrast ratio is a desired aspect of any display, but with the various methods of measurement for a system or its part, remarkably different measured values can sometimes produce similar results.
About the Author
Asianwolf 4 Channel Standalone DVR w/LCD TFT Color Monitor from asianwolf.com
