Lcd Tft
March 5, 2009 
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| NEW Dell P2210 22 widescreen TFT active matrix LCD display w USB hub | |
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$130.00 End Date: Saturday May-26-2012 11:36:21 PDT Buy It Now for only: $130.00 Buy It Now | Add to watch list |
| APPLE M9179LL A 30 CINEMA HD DISPLAY TFT WIDESCREEN MONITOR A1083 | |
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$512.28 (15 Bids) End Date: Thursday May-24-2012 16:45:50 PDT |
| 1 DELL 1905FP 19 LCD FLAT PANEL TFT MONITOR DVI VGA | |
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$79.99 End Date: Saturday May-26-2012 13:55:25 PDT Buy It Now for only: $79.99 Buy It Now | Add to watch list |
| Dell 17 inch TFT LCD Flat Panel Monitor | |
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$5.50 (4 Bids) End Date: Thursday May-24-2012 21:00:23 PDT |
| 2407WFP DELL 24 INCH ULTRASHARP LCD TFT MONITOR 24 FLAT PANEL WIDESCREEN | |
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$194.99 End Date: Saturday Jun-23-2012 8:56:06 PDT Buy It Now for only: $194.99 Buy It Now | Add to watch list |
| NEC MultiSync 17 TFT LCD Flat Panel Monitor 17 1280 x 1024 75 Hz | |
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$0.99 (2 Bids) End Date: Thursday May-24-2012 22:41:39 PDT |
| GATEWAY FPD1565 15 FLAT PANEL TFT LCD COMPUTER MONITOR FREE SHIPPING | |
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$38.99 End Date: Tuesday Jun-5-2012 11:27:50 PDT Buy It Now for only: $38.99 Buy It Now | Add to watch list |
| HP RACKMOUNT 15 MONITOR AND KEYBOARD PS 2 W RAILS HP TFT5600 RKM | |
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$49.99 End Date: Friday May-25-2012 9:58:00 PDT Buy It Now for only: $64.99 Buy It Now | Bid now | Add to watch list |
| HP L1906 TFT Silver Black 19 5ms LCD Monitor 250 cd m2 5001 Tested | |
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$53.95 End Date: Saturday Jun-16-2012 16:03:45 PDT Buy It Now for only: $53.95 Buy It Now | Add to watch list |
| HP RACKMOUNT 15 MONITOR AND KEYBOARD PS 2 W RAILS HP TFT5600 RKM | |
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$49.99 End Date: Friday May-25-2012 9:58:01 PDT Buy It Now for only: $64.99 Buy It Now | Bid now | Add to watch list |
| Universal CCFL Inverter LCD Monitor Inverter 1 Lamp for TFT LCD Monitors | |
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$4.00 End Date: Thursday May-31-2012 12:03:37 PDT Buy It Now for only: $4.00 Buy It Now | Add to watch list |
| NEW 15 Touch Screen POS TFT LCD TouchScreen Monitor | |
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$198.00 End Date: Tuesday Jun-19-2012 18:02:36 PDT Buy It Now for only: $198.00 Buy It Now | Add to watch list |
| MPC TFT1780PS 17 LCD Flat Panel Monitor w Video Cable WORKING FREE SHIPPING | |
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$42.99 End Date: Friday May-25-2012 10:27:03 PDT Buy It Now for only: $47.99 Buy It Now | Bid now | Add to watch list |
| ASUS VH198T VH198T LCD display TFT LED backlight 19 widescreen | |
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$109.99 End Date: Thursday Jun-21-2012 12:05:31 PDT Buy It Now for only: $109.99 Buy It Now | Add to watch list |
| MPC TFT1780PSA 17 LCD Flat Panel Monitor w Video Cable WORKING FREE SHIPPING | |
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$41.99 End Date: Friday May-25-2012 10:34:53 PDT Buy It Now for only: $46.99 Buy It Now | Bid now | Add to watch list |
| HP RACKMOUNT 15 MONITOR AND KEYBOARD PS 2 HP TFT5600 RKM | |
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$49.99 End Date: Thursday Jun-21-2012 10:12:08 PDT Buy It Now for only: $49.99 Buy It Now | Add to watch list |
| Advanced Video Communication AM 064 6 1 4 TFT LCD Monitor w Remote Control | |
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$29.99 End Date: Friday May-25-2012 15:45:41 PDT |
| HP Compaq TFT5600RKM 1024x768 LCD Monitor VGA W Keyboard TrackBall | |
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$248.99 End Date: Sunday Jun-10-2012 18:46:59 PDT Buy It Now for only: $248.99 Buy It Now | Add to watch list |
| Samsung 770 TFT MONITOR | |
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$9.99 End Date: Saturday May-26-2012 9:34:01 PDT Buy It Now for only: $34.99 Buy It Now | Bid now | Add to watch list |
| HP TFT5600RKM 1U Rackmount Console Server Screen Keyboard w Rails | |
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$124.99 End Date: Friday Jun-1-2012 15:49:13 PDT Buy It Now for only: $124.99 Buy It Now | Add to watch list |
| NEW 17 Touch Screen POS TFT LCD TouchScreen Monitor | |
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$249.99 End Date: Saturday Jun-2-2012 11:17:07 PDT Buy It Now for only: $249.99 Buy It Now | Add to watch list |
| Advanced Video Communication AM 064 6 1 4 TFT LCD Monitor WORKING FREE SHIP | |
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$29.99 End Date: Saturday May-26-2012 9:42:03 PDT |
| APPLE CINEMA DISPLAY 23 Inch Aluminum DVI TFT LCD SCREEN A1082 M9178LL A 1 | |
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$219.00 End Date: Saturday Jun-23-2012 9:33:18 PDT Buy It Now for only: $219.00 Buy It Now | Add to watch list |
| AOC 22 LCD Monitor Model TFT22W90PS | |
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$42.00 (2 Bids) End Date: Saturday May-26-2012 10:34:52 PDT |
| GATEWAY FPD1780 17 FLAT PANEL TFT LCD COMPUTER MONITOR FREE SHIPPING | |
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$44.99 End Date: Tuesday Jun-5-2012 11:25:18 PDT Buy It Now for only: $44.99 Buy It Now | Add to watch list |
| Compaq TFT5600 RKM Rack Mount 15 Flat panel LCD Server Monitor PS2 No Rails | |
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$57.99 End Date: Saturday May-26-2012 11:09:05 PDT |
| Genuine Dell 24 Inch LCD Monitor TFT LED ST2420L Widescreen 24 | |
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$189.99 End Date: Saturday Jun-23-2012 8:42:10 PDT Buy It Now for only: $189.99 Buy It Now | Add to watch list |
| 17 Samsung LCD Monitor Syncmaster 171S TFT VGA 1280x1024 gamers movies vivid | |
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$39.99 End Date: Saturday May-26-2012 12:12:41 PDT |
| 12V AC adapter power supply for SVA ev 1703 TFT LCD TV | |
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$9.89 End Date: Friday May-25-2012 14:15:06 PDT Buy It Now for only: $9.89 Buy It Now | Add to watch list |
| Planar PL1910M TFT LCD Monitor 19 Inch Color 43 1280x1024 10001 | |
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$19.99 End Date: Saturday May-26-2012 14:05:09 PDT |
| ViewSonic VA2703 VA2703 LCD display TFT 27 | |
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$249.99 End Date: Wednesday Jun-13-2012 15:10:27 PDT Buy It Now for only: $249.99 Buy It Now | Add to watch list |
| NEC MultiSync LCD2190UXp BK 21 LCD TFT Monitor | |
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$250.00 End Date: Saturday Jun-2-2012 16:16:02 PDT Buy It Now for only: $250.00 Buy It Now | Add to watch list |
| Dell UltraSharp 1905FP LCD Monitor TFT 19 Inch USB 4 3 1280x1024 | |
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$19.99 (1 Bid) End Date: Saturday May-26-2012 14:05:09 PDT |
| Lot of 2 Gateway 17 lcd monitorsTFT1780PS+ work great | |
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$50.00 End Date: Friday Jun-22-2012 5:21:58 PDT Buy It Now for only: $50.00 Buy It Now | Add to watch list |
| Samsung GH19PS TFT LCD Monitor Sun Microsystems 19 Inch 1280x1024 | |
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$19.99 (1 Bid) End Date: Saturday May-26-2012 14:05:09 PDT |
| Dell P190S LCD Display Monitor TFT CCFL 19 1280 x 10 NEW | |
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$199.99 End Date: Wednesday Jun-20-2012 20:39:21 PDT Buy It Now for only: $199.99 Buy It Now | Add to watch list |
| Samsung GH19PS TFT LCD Monitor Sun Microsystems 19 Inch 1280x1024 SMS | |
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$19.99 (1 Bid) End Date: Saturday May-26-2012 14:05:09 PDT |
| ASUS 24 VE247H Wide Screen HD TFT LCD LED Monitor +SPK | |
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$183.28 End Date: Monday May-28-2012 19:32:29 PDT Buy It Now for only: $183.28 Buy It Now | Add to watch list |
| APPLE M9179LL A 30 CINEMA HD DISPLAY TFT WIDESCREEN MONITOR A1083 | |
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$305.99 (8 Bids) End Date: Saturday May-26-2012 16:45:09 PDT |
| Compaq TFT5600 RKM Rack Mount 15 Flat panel LCD Server Monitor Screen only | |
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$16.00 End Date: Sunday Jun-3-2012 6:27:06 PDT Buy It Now for only: $16.00 Buy It Now | Add to watch list |
| DELL ULTRASHARP U2410 24 Widescreen LCD MONITOR TFT | |
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$369.99 End Date: Saturday Jun-23-2012 8:31:58 PDT Buy It Now for only: $369.99 Buy It Now | Add to watch list |
| MPC TFT1780PS 17 LCD Flat Panel Monitor w Video Cable WORKING FREE SHIPPING | |
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$39.99 End Date: Saturday May-26-2012 16:54:09 PDT Buy It Now for only: $43.99 Buy It Now | Bid now | Add to watch list |
| Pyle Plvhr75 Pyle view Series 7 Tft Lcd Widescreen Headrest Monitor | |
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$55.20 End Date: Sunday May-27-2012 17:28:35 PDT Buy It Now for only: $55.20 Buy It Now | Add to watch list |
| MPC TFT1980 19 LCD Flat Panel Monitor w Video Cable WORKING FREE SHIPPING | |
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$44.99 End Date: Saturday May-26-2012 16:54:10 PDT Buy It Now for only: $49.99 Buy It Now | Bid now | Add to watch list |
| Dell UltraSharp 3007WFP HC 30 TFT Widescreen LCD 30 INCH Monitor | |
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$899.99 End Date: Friday Jun-1-2012 12:40:25 PDT Buy It Now for only: $899.99 Buy It Now | Add to watch list |
| MPC TFT1980 19 LCD Flat Panel Monitor w Video Cable AC Adapter WORKING | |
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$44.99 End Date: Saturday May-26-2012 16:59:19 PDT Buy It Now for only: $49.99 Buy It Now | Bid now | Add to watch list |
| IBM L170M LCD FLAT PANEL MULTIMEDIA MONITOR 17 6734 LB1 TOUCH SCREEN TFT | |
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$75.00 End Date: Friday Jun-22-2012 17:08:28 PDT Buy It Now for only: $75.00 Buy It Now | Add to watch list |
| SOYO 19 INCH TFT LCD SCREEN MONITOR DESKTOP DISPLAY MT NI DYLM1988 AS IS | |
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$8.50 (6 Bids) End Date: Saturday May-26-2012 20:33:08 PDT |
| Envision EN7750 17 LCD Monitor White TFT1780 | |
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$34.00 End Date: Monday Jun-4-2012 19:57:12 PDT Buy It Now for only: $34.00 Buy It Now | Add to watch list |
| Dell E157FP 15 inch LCD TFT Monitor | |
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$30.00 (1 Bid) End Date: Sunday May-27-2012 3:52:30 PDT |
| New Pyle PLVHR75 7 TFT Wide Screen Headrest Monitor | |
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$63.99 End Date: Friday May-25-2012 14:57:41 PDT Buy It Now for only: $63.99 Buy It Now | Add to watch list |
| NEW 17 Touch Screen POS TFT LCD TouchScreen Monitor | |
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$247.49 End Date: Tuesday Jun-19-2012 18:10:22 PDT Buy It Now for only: $247.49 Buy It Now | Add to watch list |
| Sony SDM HS75 17 LCD Monitor Black HD15 TFT LCD Color Display Screen Computer | |
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$29.99 End Date: Sunday May-27-2012 10:53:22 PDT Buy It Now for only: $34.99 Buy It Now | Bid now | Add to watch list |
| DELL E176 17 FLAT PANEL TFT LCD COMPUTER MONITOR TESTED FREE SHIPPING | |
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$49.99 End Date: Wednesday Jun-20-2012 11:44:33 PDT Buy It Now for only: $49.99 Buy It Now | Add to watch list |
| Hp TFT7600 Rackmount Keyboard and 17 LCD Widescreen Monitor WORKING FREE SHIP | |
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$249.99 End Date: Sunday May-27-2012 11:43:02 PDT Buy It Now for only: $299.99 Buy It Now | Bid now | Add to watch list |
| Dell UltraSharp 3007WFP HC 30 TFT Widescreen LCD 30 INCH Monitor | |
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$799.99 End Date: Sunday Jun-3-2012 7:50:58 PDT Buy It Now for only: $799.99 Buy It Now | Add to watch list |
| DELL Ultrasharp 1907FPt 19 inch LCD TFT Monitor Used AS IS | |
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$9.99 End Date: Sunday May-27-2012 13:18:58 PDT Buy It Now for only: $10.99 Buy It Now | Bid now | Add to watch list |
| Compaq TFT5600 RKM Rack Mount 15 Flat panel LCD Server Monitor PS2 No Rails | |
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$100.00 End Date: Sunday Jun-3-2012 12:48:12 PDT Buy It Now for only: $100.00 Buy It Now | Add to watch list |
| Advanced Video Communication AM 064 6 1 4 TFT LCD Monitor w Remote Control | |
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$29.99 End Date: Sunday May-27-2012 15:45:38 PDT |
| APPLE CINEMA DISPLAY 23 Inch Aluminum DVI TFT LCD SCREEN A1082 M9178LL A 2 | |
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$169.00 End Date: Saturday Jun-23-2012 9:51:41 PDT Buy It Now for only: $169.00 Buy It Now | Add to watch list |
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
Renesas TFT-LCD (YLCDRSK2378)
