Everything About LCD Monitor

LCD Care: Things to Consider Part 1

Bryan — Sat, 10 Jul 2010 16:28:56 +0000

It is very important for us to know the different elements that may affect the performance and quality our LCD monitors. Here are a few ideas that we should consider:
1. The brightness and response time of the LCD monitor are affected by the temperature of its location. At low temperatures such as 10 degrees celsius or even lower, your LCD monitor may fail to obtain proper display.
2. During conditions of humidity or high temperature, the lifetime of your LCD monitor may be shortened.
3. Exposure to drastic changes or shifts in temperature may affect the polarizer of your LCD monitor, thus harming its quality.

Liquid Crystal Display Defined

Bryan — Thu, 10 Jun 2010 22:42:09 +0000

And LCD monitor or liquid crystal display is a display device that composed of monochrome pixels that are arrayed on a source of light or more commonly known as the reflector. LCD’s are most often used in electronic devices that are battery-powered because of the fact that this thin and flat display device uses relatively small amounts of electricity.

Layers of molecules compose each pixel of an LCD monitor. These molecules are fixed between layers of transparent electrodes.

Some specifications that you have to consider when analyzing an LCD monitor are the resolution, the dot pitch, response time, matrix type, viewing angle, contrast ratio, aspect ratio and the brightness.

LCD vs. CRT Part 2

Bryan — Mon, 10 May 2010 08:35:59 +0000

Continuation to previous post…
3. The LCD monitor has a consistent tonal scale, an excellent text contrast and it does not normally flicker. The CRT monitor has strong bright areas that may cause other parts of the picture to dim. CRT monitors also have poor text contrast because of the limited bandwidth. CRT monitors also inherently flicker.
4. The contrast and color of the images displayed by an LCD monitor may change with respect to the viewing angle while the CRT monitor delivers consistent image.
5. On dark images, the LCD monitor displays black poorly while the CRT monitor provides good blacks given that the monitor is properly adjusted.

How to Clean Your LCD Monitors

Bryan — Sat, 10 Apr 2010 13:05:51 +0000

The surface LCD monitor, unlike the CRT’s that is made of glass, is made of plastic-like material. Cleaning your flat-screens will only take you a few minutes, but will require special care to avoid any damage.

First, we have to unplug the monitor before attending to it. Use dry soft cloth – the ones used in cleaning eyeglasses – to clean the surface. Gently wipe the surface from left to right. Do this VERY GENTLY. Do not apply any pressure to the screen.

If the dirt doesn’t come off, you can dampen the cloth but not too much. Use distilled water or a solution of equal ratio of white vinegar and distilled water.

Dead Pixels

Bryan — Wed, 10 Mar 2010 12:27:35 +0000

The most common irreversible problem on LCD monitors is the occurrence of dead pixels. These are simply non-functioning pixels on LCD monitor. You can easily identify these dead pixels if you have a white background. They look like tiny black spots on your screen.

Dead pixels can not be repaired: they stay where they are for good. So to avoid dead pixels, you better learn how to take care of your LCD monitors. They are much sensitive than the usual CRT monitors because its screens can be easily damaged and scratched.

Some big manufacturers have warranty regarding dead pixels. They can easily replace the unit if it is within the warranty period.

LCD vs. CRT Part 1

Bryan — Wed, 10 Feb 2010 08:31:29 +0000

Here are some comparisons between the LCD and CRT monitors. Which is better? Or the proper question could be which one fits your needs?
1. The LCD monitor is compact, lightweight and consumes low amounts of power (approximately 20 Watts) while the CRT monitor is bulky, heavy and consumes high amounts of power (approximately 150 Watts).
2. The LCD monitor displays perfectly sharp images with perfect image geometry. The CRT monitor has limited sharpness in its display and may tend to blur at higher levels of brightness. The CRT monitor also has the tendency to encounter geometric distortions and this case may worsen with respect to age.

What to Consider When Buying LCD Monitor (cont)

Bryan — Sun, 10 Jan 2010 12:25:29 +0000

..continued from previous post
Viewing angle. This is the maximum screen projection angle such that display is still in its acceptable definition, neither blurry nor faint.
Color Gamut. Or the color support. How many color set can the LCD monitor display?
Luminance. Is the amount of light emitted by the LCD monitor just right? Is it too bright?
Contrast ratio. This is the luminosity ratio of the brightest color to that of the darkest color. Higher contrast ratio is more favorable than the lower.
Aspect ratio. This is the width-height ratio.
Input ports. These are usually DVI, LVDS, VGA, HDMI or S-video. This depends on your need.

We hope that the specifications we listed were of help to your evaluation.

Manufacturers of LCDs

editor — Mon, 14 Dec 2009 11:11:34 +0000

Various computer companies has shifted its production from cathode ray tubes (CRTs) to liquid crystal display (LCDs) to meet the demands and wants of its consumers. The evolution of computer monitors brought users to a more convenient and clearer resolution of pictures, videos, and colors. Clearly, CRTs is phased out and the LCDs have dominated the computer market.

Here are some of the companies you would like to check for the type of LCD you want to have.

Manufacturer:
NEC Display Solutions
ViewSonic
SAMSUNG
Acer America
Hewlett-Packard
Planar
AG Neovo
AOC Monitor
ASUS
BenQ Inc.
CHI MEI
COMPAQ
DoubleSight
Eizo
Envision
Gateway
Hanns-G
iZ3D
KDS
LaCie
Lenovo
LG Electronics
MITSUBISHI DIGITAL ELECTRONICS
Philips
Sceptre
Sony
V7
VIEWERA
WESTINGHOUSE
X2GEN

Photo credit here

Transreflective LCD monitors

Bryan — Sun, 01 Nov 2009 22:56:30 +0000

For LCD monitors that are meant to be used in bright sunlight or other areas with poor lighting conditions, you need a special type of screen using transreflective technology.

Transreflective monitors reflect a great amount of heat (and light) and prevent overheating. They are also helpful in industrial situations when monitors have to be read in bright sunlight but cannot be simply adjusted to face away from the sun. These screens reflect most of the sunlight the monitor is exposed to, and automatically increase or decrease the light emanating from the screen depending on how much light that shines on it, thus reducing the need for manual light adjustment.

Why is it clear?

editor — Fri, 16 Oct 2009 12:43:52 +0000

LCD is short for liquid crystal display, a type of display that is used in digital watches and many portable computers. The LCD displays utilize two sheets of polarizing material with a liquid crystal solution between them and when an electric current passes through the liquid, it causes the crystals to align. Each crystal is like a shutter, it either allows the light to pass through or blocks the light.

The monochrome LCD images usually appear as blue or dark gray images on top of a grayish-white background while the colored LCD displays use two basic techniques for producing color: the passive matrix (which is less expensive of the two technologies) and the thin film transistor (TFT) or active-matrix.

Photo credit here