What kind of lcd screen do i have

The only real downside to these monitors is that they possess low quality and limited contrast ratios, colour reproduction, and viewing angles. However, they suffice for everyday operations. In Plane Switching displays are considered to be among the best of the best when it comes to LCD technology as they offer superior viewing angles, excellent image quality, and vibrant colour accuracy and contrast. While they have much better viewing angles and higher quality colour reproduction features than TN panels, they also tend to have significantly slower response times.

The applications involved in this type of LCD display are so advanced that they can minimize colour distortion without compromising on the extremely wide viewing angle. This screen is typically used in highly advanced and professional environments such as in the cockpits of commercial airplanes. Nauticomp Inc. All of our touchscreen displays are made to order and customized according to your specific needs and applications. Very often people become aware of previously unnoticed problems in display quality when they run a check using test patterns and so on.

This time we are going to talk about the basic points used to assess LCD display quality, and show you a simple way to test it. Below is the translation from the Japanese of the ITmedia article "The difference in image quality is perfectly obvious!

Copyright ITmedia Inc. All Rights Reserved. First of all, bear with us in the following simple test. Below is image data of a row of three squares. In the center of each square is a letter so faint as to be barely distinguishable, so there are three letters in all.

Read from the left they make up a word. Can you see that hidden word? If you look closely at the white, gray and black squares, there is a letter concealed in each of them. That's right. The answer is " LCD " it is displayed if you drag the space between the brackets.

We assume that probably many users could read the letters concealed in the squares. So, the next test is much more difficult. A word is concealed in the four squares below, just as in the image above. The letters are written in colors that are very similar to those of the boxes and we expect that, in many cases, it is hard to distinguish them in your browser.

We would like you to download the image and check it closely in photo retouching software or a viewer that is capable of accurate color reproduction. At first glance it is a series of four boxes with a color gradation from white to black, but a word is concealed in them. This time the answer is " EIZO " it is displayed if you drag the space between the brackets. Depending on the lighting or the user's environment it may be hard to make out but, if you can read these four letters, the display quality, or more accurately the still image gradation expression, of your LCD is extremely high.

However, you should probably doubt the display quality of your current LCD if you couldn't read them at all even when you stared at the screen. Let's get down to details then. However, recently LCD prices are fiercely competitive and there are surprisingly few products that insist on high image quality and performance.

On the other hand, the increasing opportunities to enjoy things like HD videos and games, and high resolution digital photographs on the computer make LCD display quality even more important. As far as possible it's best to use an LCD with excellent display quality in order to fully enjoy the charms of the visual content. Even so, perhaps you think that there can't really be that much wrong with the LCDs that so many people are using at the moment.

Here we would like to show you a simple method to check LCD display quality. You can get a good idea of whether the basic display quality is good or bad just by looking at how some simple test images are displayed, just like in the introductory quiz. First of all, we would like you to get a sense of how important it is that "image data can be properly displayed" by checking the display of the LCD that you currently use, that's right, the one you are using to view this page!

Downloads are available of several test images, such as gradation patterns. We would like you to display the downloaded test images in photo retouching software or a viewer that can reproduce color accurately. As we mentioned at the start of this article, you have to be careful as in many cases colors cannot be displayed accurately in web browsers.

Currently only a few browsers such as Safari and Firefox 3. If these modes are not available it is fine to set the color temperature to K and gamma to 2. If you cannot adjust the color temperature and gamma, simply adjust the brightness and contrast so that they are easier to discern. The average LCD takes some time for the monitor to stabilize after it is switched on so, after start up, please wait at least 30 minutes or so before doing the test.

Most EIZO monitors are an exception to this as they are equipped with our proprietary dimming function and the monitor stabilizes in a short time after start up. We would also like you to adjust the monitor stand so that things like the room's lighting are not reflected on the screen. You have to be particularly careful with products that have a glare glossy type screen as they are highly reflective.

Visual assessment is impeded when ambient light is reflected. It will be much easier to make an assessment if you turn off the room lights at night and exclude as much ambient light as possible. This applies for both glare and non-glare matte types. The surface treatment of an LCD makes a difference to the background reflection.

Glare panels impede the surface diffusion of backlight, which does make it easier to achieve high color purity, but also makes distinct reflections of the user or lighting much more likely photo on the left. If the lights are similarly trained on a non-glare panel they do not have much effect on the display, only appearing as a fuzzy brightness photo on the right. For your reference, we ran a test on an EIZO The FlexScan SX series comes with a number of high image quality functions and boasts top class display quality as a general-purpose LCD intended for a computer.

When we displayed the quiz images the more difficult ones, of course on the FlexScan SXW, the four letters appeared faintly when we stared closely at the screen and we could read what they said. This indicates the high image quality level. When checking the display quality of an LCD it is comparatively easy to understand the gradation expression capability by a visual check.

Let's display color and monochrome gradation images and check whether the entire image is smoothly reproduced. If there is a problem with the gradation expression it produces things like blocked-up shadows in dark areas and blown-out highlights in light areas, banding vertical or horizontal stripes in the middle gradations, and color cast, so you should check for problems like these.

When you click on an image it is displayed in that actual resolution. We would like you to download the images in the resolution which matches that of your current LCD. Gradation expression can vary according to whether the image is viewed horizontally or vertically, so it will be more effective if you rotate these images and view them vertically as well.

A gradation pattern where the colors red, green, blue, cyan, magenta and yellow go through 16 gradients as they change to white or black. This is an easy test image so we expect that it can be seen in most environments that each color bar is divided into 16 blocks.

A gradation pattern where the colors red, green, blue, cyan, magenta and yellow go through 64 gradients as they change to white or black. Each color bar is divided into 64 rectangular blocks.

With this many gradients we expect that many LCDs will find it hard to make distinctions in the dark areas or the areas that are close to primary colors. A smooth gradation pattern where the colors red, green, blue, cyan, magenta and yellow go through gradients as they change to white or black.

This then changes a percentage of the polarization of the light passing through to meet the orientation of the second polarizer, allowing it to pass through and become visible to your eye. Now you have an on and off and between switch for light. The difference between different types of LCD panels is mostly in how this in-between liquid crystal part works. TN stands for twisted nematic. These were the first LCD panels, and the tech behind them dates back to the s. With TN panels, once the backlight is polarized into one direction, it enters the liquid crystals.

Or, the crystal can align itself with the first polarizer, and, subsequently, the second polarizer will block the light. It also allows for fast refresh rates. Consequently, TN panels are the only hertz Hz gaming monitors available right now. They can also have poor color and contrast due to this twist mechanism not being the most precise or accurate. VA stands for vertical alignment, again referring to the crystal alignment.

These came about in the s. In the off state, the crystals are perpendicular to the two opposing polarizers. In the on state, the crystals begin to align horizontally, changing the polarization to match the second polarizer and allowing the light to go through the crystals.

This structure produces deeper blacks and better colors than TN panels. And multiple crystal alignments shifted a bit off axis from each other can allow for better viewing angles compared to TN panels.

However, VA panels come with a tradeoff, as they are often more expensive than TN panels and tend to have lower refresh rates and slower response times than TN panels. IPS stands for in-plane switching. These panels debuted after TN panels in the mids. Part of this design requires the two electrodes which apply current to the liquid crystal to change its state to be on the same glass substrate, instead of aligned with each other on the sandwiching glass substrates above and below the crystal as in other types of LCDs.

This, in turn, blocks a bit more light than both TN and VA panels. IPS panels have the best viewing angles and colors of any LCD monitor type, thanks to its crystal alignment always lining up with the viewer.

However, they also tend to be a bit less bright due to their design blocking off a bit more of the backlight. The answer is quantum dots. These clever little things are molecules that absorb light and then re-emit that light in the color you engineered them to.

This allows more of the backlight to come through instead of being blocked by the color filters, it can also reduce crosstalk, or colors slipping through the wrong subpixel, ensuring better colors of LCDs. Other uses of quantum dots are being tried, however.

One promising one is using QD molecules to replace the color filters entirely, allowing even more light through. Being passive, they sit there and affect color and brightness only. But really, how fast do you need your refresh rate to go anyway? And both are often better controlled by higher refresh rates, rather than clever panel engineering, at least for LCD displays.