CRT
Lcd 40 Inch
CRT or Cathode Ray Tube monitors are the monitors everyone will have seen before. They that look like televisions. They range in size from 15 to around 22 Inch, and weight up to 30 kilos.
Lcd 40 Inch
Advantages
Great value for money
Mature technology
Good for graphical detail
Can accommodate many different resolutions
Disadvantages
Big
Take up a lot of space
Cost more to run than an LCD
LCD/TFT
LCD or Liquid Crystal Display screens have now been around a few years, these are the thin screens. Some look almost like a picture frame. You will see them referred to as LCD or TFT (TFT being a type of LCD). They start at around 14 inches, and due to technological advances bigger LCDs are being produced all the time, 30 Inch are already available with 40 inch on the way too. They weigh very little compared to their CRT equivalent and can be mounted on a wall or shelf with ease.
Advantages
Less desk space needed
Require less power to run, more environmentally friendly
Increased Viewable area, a 15"LCD can give the same viewable area as a 17" CRT monitor
Disadvantages
Viewing angle can affect image quality
One native resolution
More expensive than a CRT
General Monitor Features
Size
Here is one area where size does matter, the bigger the monitor the easier it will be on the eye. You will be able to open more windows and the text should be easier to read. Keep in mind the viewable area, all CRT have a smaller viewable area than their size. For Example a typical 17" CRT will have a viewable area of around 15.8". LCD tends to have the same viewable area, so a 15" LCD will have a 15" viewable area. Monitor size (and TVs) are measured diagonally, from the top left corner to the bottom right hand corner.
Resolution
Resolution is the number of pixels displayed on screen at one time, it's usually in the format Horizontal x Vertical, e.g.?- 800x600 or 1024x768. CRT monitors can display multiple resolutions easily, while LCD monitors are optimised for 1 native resolution (They can display other resolutions, but are optimised for 1) the higher the resolution the more you can get on screen and the sharper the image.
CRT Specific Features
Dot Pitch
Dot pitch is the distance in millimetres between two dots of the same colour on the screen, it's usually measured diagonally and you should be looking for something around 0.26mm
Refresh Rate
This is the number of time the screen is redrawn per second, most new monitors should have reasonable refresh rates, 75Hz or higher. Some older CRTs had lower refresh rates that can cause screen flicker and induce eye strain.
LCD Specific Features
Brightness
Because LCDs require their own back light to create colour, brightness is an important factor. It's measured in candelas per metre squared or cd/m2, where one candle produces a brightness of 1 candela. The higher this number, the brighter the screen.
Contrast Ratio
This is the degree of difference between the extremes of light and dark colours. The higher the contrast ratio, the more detailed the image will be. Blacks will be blacker, whites will be whiter, and particularly text on the image will be more vivid. It will usually be written as 500:1 or 250:1
Response Time
Refers to just how quickly a pixel can change colour. It's measured in milliseconds with 20-30ms being the normal at the moment. Gamers and people who watch a lot of movies on LCD screens would be better opting for something with a fast response time, around 16ms as this reduces the ghosting effect of fast motion.
When looking to buy a new monitor all of the above needs to be considered. Keep in mind you will be looking at your purchase day in day out for the next few years, so do not cut corners here, buy the best you can afford, your eyes will thank you for it later.
Dead Pixel Policy
Due to the difficulties associated with producing LCD screens very few brands guarantee a pixel perfect (Class 1) product,
and those that do charge a premium for it.
Most of the screens we sell currently adhere to the international standard, ISO 13406-2 and use class 2 panels.
It is possible, although uncommon, for a Class 2 LCD screen to have a small number of faulty pixels.
In these cases, this standard deems the screen as being 'not faulty'.
For an LCD monitor to be considered faulty there has to be a certain number of dead pixels:
Acceptable malfunctioning pixels by class & type per Million pixels:
2 complete pixels constantly illuminated (a white spot)
2 complete pixels not illuminated (a black spot)
5 sub pixels constantly on or off or intermittent fault. May blink or show a pixel as a base colour (Red, Blue, Green, Cyan, Magenta or yellow)
or, any 2 sub pixel faults within a 5 x 5 block of pixels
Also, the faults are cumulative, so if you have 1 white spot and 1 black spot per million pixels then this counts.
Native Resolution Pixel Count Example
1024 x 768 786,432 2 or more dead pixels considered faulty
1280 x 1024 1,310,720 3 or more dead pixels considered faulty
1600 x 1200 1,920,000 3 or more dead pixels considered faulty
So, You can have a 19" LCD monitor with a low native resolution where 2 pixels would be considered faulty, but if it had a native resolution of 1600 x 1200 and therefore had many more pixels, then 2 would not be classed as faulty.
For any LCD to be classed as faulty it must meet the above requirements, primarily those of the specific manufacturer. Please contact the manufacturer directly for their current dead pixel policy.
Types of Monitors and Specific Features
Lcd 40 Inch
Special Price!!! Samsung LN40D630 40-Inch 1080p 120Hz LCD HDTV (Black)
Nov 07, 2011 02:17:07
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Samsung LN40D630 40-Inch 1080p 120Hz LCD HDTV (Black) Feature
- Auto Motion Plus 120Hz with Clear Motion Rate
- Full HD 1080p resolution
- Touch of Color design
- Exceeds ENERGY STAR standards
- AllShare DLNA networking
Samsung LN40D630 40-Inch 1080p 120Hz LCD HDTV (Black) Overview
Captivating images and elegant design from a TV with a crowd-pleasing style.From its crystal-clear onscreen motion to its elegant Touch of Color design, the SamsungLN40D630 LCD TV offers up plenty of visual attractions. Even the quickest action on the 40-inch LCD screen is smooth and lifelike,thanks to Samsung's Auto Motion Plus 120Hztechnology with Clear Motion Rate. Even when it's not on, the Touch of Color design - a red accent around the bezel - provides subtle yet attention-getting eye candy. A suite of connectivity technologies including All Share and Connect Share Movie - along with four HDMI inputs - turns this HDTV into a full fledged multimedia center.
Samsung LN40D630 40-Inch 1080p 120Hz LCD HDTV (Black) Specifications
February 2011
Compromise on price but not on features. Samsung's affordable 630 LCD HDTV series delivers Full HD resolution, playback of files from USB drives or over your home network from DLNA Certified devices, a wealth of HDMI inputs, and plenty more, all wrapped up in Samsungs eye-catching "Touch of Color" design.
Crisp, Clear Picture Quality From a TV With a True Sense of Style
1080p Full HD With Four HDMI Inputs
The LN40D630 delivers Full HD 1080p resolution, for a superb level of detail and clarity in your picture. To connect your sources, four separate HDMI inputs are provided, for delivering a Full HD picture and audio over a single cable.
Touch of Color Design
Samsungs "Touch of Color" design features a hint of amber color naturally blended into Samsungs traditional piano black bezel frame, for eye-catching style even when your TV is turned off.
Exceeds ENERGY STAR Standards
The LN40D630 exceeds the strict energy efficiency guidelines set by the EPA and US Department of Energy by up to 30%. That means you get lower utility costs, and a smaller carbon footprint.
ConnectShare Movie
Connect a thumb drive or digital camera quickly and easily via the LN40D630's USB port. An intuitive, user-friendly interface allows access to videos, music, or pictures via the remote.
Auto Motion Plus 120Hz with Clear Motion Rate
Auto Motion Plus 120Hz brings action movies and sports to life in the living room, thanks to frame-to-frame smooth motion. This technology eliminates motion blur by calculating the image and inserting it, creating a non-repetitive transition from one frame to the next. Blur is virtually eliminated and clarity enhanced, for smooth, lifelike motion.
AllShare DLNA Networking
For even more entertainment options, the LN40D630 lets you connect to your home network and stream music, videos, and photos from other DLNA Certified devices (your computer, network storage drive, etc.).
Game Mode
The LN40D630 features a "game mode," which turns off much of the picture processing for a faster video response. This is ideal for fast-paced video sources like video game systems, and will help gamers get the performance they're after.
Audio Performance
SRS' TheaterSound, available in new Samsung HDTVs, is an all-in-one audio suite that directly addresses the three most common consumer TV audio complaints--inconsistent volume levels, unintelligible vocals, and poor, dimension-less sound. SRS helps ensure you get great audio from the LN40D630's two 10-watt speakers, and additional technologies like Dolby Digital Plus and support for multi-channel sound (MTS) add even more on the sonic side of things.
PC Connectivity
The LN40D630 also features a PC input, so you an use it as a computer monitor.
LN40D630 Select Specifications
| Video | |
|---|---|
| Screen Size: | 40 Inches |
| Display Type: | CCFL-Backlit LCD |
| Resolution: | 1080p Full HD |
| Inputs | |
| HDMI: | 4 (version 1.4) |
| Component Video (Y/PB/PR): | 2 |
| PC Input: | 1 |
| USB 2.0 Ports: | 2 |
| Component Audio Input: | 2 |
| PC Audio Input: | 1 |
| Outputs | |
| Digital Audio Output: | 1 (Rear) |
| Weight and Dimensions | |
| Dimensions (WxHxD): | 39.1 x 24.1 x 3.2 Inches (39.1 x 26.3 x 10 Inches With Stand) |
| Weight: | 31.4 lbs. (38.6 lbs. with stand) |
What's in the Box
LN40D630 40-Inch Class LCD HDTV, Stand, Remote Control, Documentation
Samsung 2011 LED/LCD Feature Comparison
| Series | D8000 | D7900 | D7000 | D6500 | D6400 | D6300 | D6000 | D5500 | D5003 | D5010 | D5000 | D4003 | D4000 | D630 | D550 | D450 | D403 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Screen Sizes | 46", 55", 60", 65" | 46", 55" | 46", 55", 60" | 40", 46", 55", 60" | 40", 46", 55", 60" | 40", 46", 55" | 32", 40", 46", 55", 60" | 32", 40" | 22", 40" | 22" | 22" | 19", 26", 32" | 19", 32" | 40", 46" | 32", 37", 40", 46" | 22", 26", 32" | 32" |
| Full HD 1080p |  | | | | | | | | | | | | | ||||
| 240Hz | | | | ||||||||||||||
| 120Hz | | | | | | ||||||||||||
| 3D | | | | | | ||||||||||||
| Samsung Apps | | | | | | | | ||||||||||
| Your Video | | | | | | | | ||||||||||
| Search All | | | | | | | | ||||||||||
| Web Browser | | | | | |||||||||||||
| Skype | | | | | |||||||||||||
| HDMI Inputs | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 2 | 2 | 2 | 2 | 4* | 4 | 4 | 2** | 2 |
| USB Ports | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 1 | 1 |
| WiFi Built-In | | | | | |||||||||||||
| Micro Dimming | Micro Dimming Plus | Micro Dimming Plus | | ||||||||||||||
| Allshare | | | | | | | | | | | |||||||
| Qwerty Remote Included | | | | ||||||||||||||
| 3D Glasses Included | | ||||||||||||||||
| Design | One | One | One | One | One | ToC | ToC | ToC | High Glossy Black | ToC | ToC | High Glossy Black | ToC | ToC | ToC | ToC | High Glossy Black |
| Bezel Type | Ultra Thin | Ultra Thin | Ultra Thin | Ultra Thin | Ultra Thin |
* 19" has 2 HDMI inputs
** 19" and 22" have only 1 HDMI input
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