Introduction to notebook window of the soul–display

Buy notebook when you consider what factors? When faced with the problem of the time, most people will blurt out: CPU, disk, memory, machine size, weight, price, and so on, a number of factors, based on the needs of different considerations are not the same. But few mentions notebook screen, main output display is a portable hardware, arguably notebook “soul window” actually factors such as fuselage size, weight are effects of notebook display, so should display is considered a notebook, important factors.

Dual-screen notebook

Since its early black and white world of world of color, monochrome LCD since 1985, the world’s first laptop LCD screen, the current color LED display, laptop screen has come a long and difficult journey, with the development of display technology, categories are more and more detail of the display.

Author of this article is designed to let consumers know your laptop’s LCD screen, so as to know how to choose a notebook display, following some basic information on the LCD.

Notebook screen classification

LCD liquid crystal display is short for Liquid Crystal Display, LCD structure is placed in a parallel to two pieces of glass, liquid crystal, two pieces of glass, there’s a lot of vertical and Toshiba Satellite M35 Power Jack  horizontal small wire through power or control rod crystal molecules change direction, will have a screen light up.

Advantage thin display panel (plate type structure), electromagnetic radiation small, passive type display (no glare, helps eye health), display informative, easy color and long life (such devices have little deterioration problem, therefore life long, but limited LCD backlight life).

Disadvantages color colorful enough.

LCD liquid crystal display controlled in different ways can be divided into active and passive Matrix type LCD matrix LCD in two ways.

Passive Matrix type LCD: passive Matrix type LCD Brightness and perspective areas subject to greater restrictions, reaction has been very slow. Because of problems with the image quality, making this display device is not conducive to development for the desktop monitor. Passive Matrix type LCD can be divided into TN-LCD (Twisted Nematic-LCD, twisted nematic LCD), STN-LCD (Super TN-LCD, Super Twisted Nematic LCD) and DSTN-LCD (Double layer STN-LCD, double Super Twisted Nematic LCD).

Active-matrix LCD: now broader application of active-matrix LCD, also known as TFT-LCD (Thin Film Transistor-LCD, thin film transistor LCD). TFT liquid crystal display is a built-in transistor per pixel in the picture, making the brightness more bright, rich colors and a wider area.

Laptop mainly uses DSTN-LCD (called pseudo-color display) TFT-LCD (called true color display) two LCD display. Currently refers to LED backlight LED display screen was relative to current mainstream tubes backlight, display screen is still the LCD.

DSTN (Dual-Layer Super Twist Nematic) LCD: refers to the dual scan twisted nematic, meaning that with dual scanning mode to scan twisted nematic LCD screens, achieve the goal of complete display. DSTN-LCD not a true color display, it can only show a certain color depth, so called “false color”. Due to the poor contrast and DC Power Jack for Fujitsu Amilo L1300  brightness of DSTN-LCD, observation small screen, the color is not rich, especially slow reaction, not suitable for high speed applications such as image, video playback, usually only for text, tables and image processing, now has largely died out.

TFT (Thin Film Transistor) LCD: is by film transistor composition of screen, it of each LCD pixel points are is by integrated in pixel points behind of film transistor to driven, display Shang each pixel points behind are has four a (a black, and three a RGB color) mutual independent of film transistor driven pixel points issued color light, may display 24 bit color deep of really color, can do high speed, and high brightness, and high comparison of display screen information. TFT-LCD is one of the best available LCD color display devices, is now mainstream display on portable devices.

Screens resolution and screen proportions

In the parameters table in the notebook, we often see XGA, resolution 1024x768, screen ratio 16:9 words. The resolution is an important parameter to display refers to display the number of pixels per unit area; screen ratio refers to the screen picture ratio of vertical and horizontal. So, what do XGA representative? This was video electronic standard Association developed a display mode by, different models represent various resolutions and screen ratio. Next, I will introduce several display modes are also more common.

Standard screen:

XGA: full name Extended Graphics Array, is IBM were invented in 1990. It supports a maximum 1024x768 resolution, screen size from 10.4-inch, 12.1-inch, 13.3 to 14.1, 15.1 inch. This display mode has been adopted by most of the notebooks on the market display specifications, there are many Web pages, games, projector and other equipment will set it to “prescribed format”, however the current display mode in your notebooks have been relatively rare, but there are still many users like the resolution to tune into 1024x768.

SXGA: full name Super eXtended Graphics Array, is a resolution of 1280x1024 facts on the ground show standards, each pixel is represented by 32 bit (true color). This widely used display standard aspect ratio is 5:4 instead of 4:3.

While the SXGA+ is an extension of SXGA resolution 1400x1050, is a specifically designed for the laptop screen. Same cases, SXGA+ than XGA display 87% more content and because resolution enhancement, screen displays clear, but fonts and images smaller.

UXGA to: Ultra eXtended Graphics the opener Array, Chinese name “speed extended graphics array”, this display mode in 15 inch screen notebook common, supporting maximum x resolution. Appears on the display for a total of 1.92 million pixels, due to the high demands on manufacturing process, so it is relatively expensive, at present only a small number of high-end notebooks are equipped with this type of screen.

Wider screens:

Widescreen can bring a larger display area, while not significantly more fuselage and area of the screen, like it’s widescreen, an area smaller than the standard screen, you can reduce production costs, due to the relatively smaller tubes of larger screen, wide screen brightness and contrast on the average than the standard screen excellent

WXGA: full name Wide Extended Graphics Array, supporting resolutions 1280x768 and 1280x800 are two pixels, screen ratio and 5:3 respectively, are one of the more popular widescreen, suitable for DVD movie’s aspect ratio, so there will be no image distortion while watching DVD or image is not displayed on either side of the problem. Display mode for the LCD can be understood as WXGA+ high resolution versions of WXGA, maximum resolution of 1440x900, screen ratio is also 16:10.

WSXGA+: full name Widescreen Super eXtended Graphics Array Plus and is a display standard resolution of 1680x1050, is SXGA+ wide-screen extended mode. Each pixel is represented by 32 bit (true color). General use of the screen size of 15.4 inches and above widescreen notebook. His screen ratio is 16:10.

WUXGA: full name Widescreen Ultra eXtended Graphics Array, is a resolution of 1920x1200, the screen display modes that scale of 16:10, and 4:3 in UXGA mode, WUXGA screen is also very rare, because of its price is too high, it is generally only the high-end workstation-class notebook with this screen.

In fact, in the current notebook market, screen display modes and longitudinal width ratio of not only these, for example, resolution 1366x768 is a non-standard display mode, at a time like this laptop screen is popular. Also, according to human engineering of research, found people of two only eyes of vision range is not party of, but a long wide ratio for 16:9 of rectangular, so, currently market Shang most notebook are is used of 16:9 of widescreen display, only less part high-end notebook also in using 16:10 of wide screen, and standard of 4:3 screen in now of notebook market in the Basic has disappeared has.

Screen size

Screen size is the notebook has a screen diagonal size, generally represented by inches. As the laptop LCD screen size and resolution is decided according to its market position, so in order to adapt to different groups of spending power and habits, portable LCD monitor size and resolution types than a desktop LCD monitor.

14-inch display

Notebook computer LCD screen size is to be determined by the market positioning of the machine, the screen size can be from a certain extent determines its weight. Those super thin models to pursue mobility, used below is 14 inches of LCD, which screen size including: 6.4 inch, 8.9 inches, 11.3 inch, 10.4 inch, 10.6 inch or 12.1 inch, 13.3 inches; and 14 inches and 15 inch is at performance and portability oriented models the common screen sizes, Mainstream now fixed optical drive or light soft Sony Vaio VGN-FW190N Keyboard  swap was 14.1 inch screen; positioned as large desktop replacement notebooks most common screen, 15.4 and 16.1 inches, even machine uses a 17 inch screens, largest 18.4-inch.

Notebook screen size determines the user visibility and weight of the notebook and portability. To get more stunning visual effects, select super large-screen notebooks is no question about that, however, the weight of the notebook, and will increase as a, to a large extent, reducing the portability. Therefore, when selecting a right for your own notebook, screen size also plays a very important role.

Screen Visual angle

Visual perspective means that a user can watch the screen from different directions clearly all content angle. Delivery after refraction and reflection, the LCD monitor displays lights when output has a certain degree of directionality, are beyond the scope of this watching will produce color distortion. View angle size determines the size of user-visible range and the best viewing angle. If it is too small, users slightly deviate from the front of the screen, the display will shine. Users available in 120 degree view angle as selection criteria.

Two ThinkPad notebook comparison under Visual angle

Currently Visual angle of LCD monitors sold on market are symmetrical but not necessarily symmetrical, often about angles less than about angles. When we say that angle is around 80 degrees, said station starting in screen normal (that is, right in the middle of an imaginary line on the monitor) 80-degree location can still be clearly seen when the screen image. View larger the viewing angle, the better, LCD monitor also has applicability.

Because everyone’s vision is different, so we are subject to contrast, in the maximum amount of Visual angle to contrast the more the better. Currently the Visual angle of most products on the market in more than 120 degrees, some products to more than 170 degrees. Explanations is that different measurement modes, Visual angle have different nominal values, as display manufacturers are usually not stated specific measurement mode, therefore overall, view angle just a reference values.

Portable Visual angle of the screen while it is not a big problem, but when buying notebook is also noteworthy. Because of the different brands notebook LCD screen, so the Visual angle is mixed, where consumers when’s best to personally test, different perspective watching the display, for use later in the process can have a more comfortable viewing results.

Bad points

Also known as the absence of bad spots on the LCD, which refers to the LCD display black and white and red, yellow, and blue primary colors display under the sub pixel, each dot is a sub-pixel. LCD worst fear is bad. Once pixel and regardless of display as demonstrated how images, display a point always displayed the same color. This “pixel” cannot repair, only replacing the entire display could resolve problems. Bad points roughly can be divided into two classes, in which dark is a stuck pixel changes regardless of the screens could not display the content of “black spots”, and the most annoying is that as long as the boot after there have been bright spots. To date, LCD technology development to the present, still not fundamentally overcome that shortcoming.

Bright pixel

General laptop slightly understand when users in the purchase of notebook test software black, white, red, yellow and blue notebook screens under different colors such as bright or dark dot. If you purchased time on LCD notebook pay no heed to, happen to be buying back the laptop screen has one or more bad points, then you are depressed me, was to cry no tears.

Friends would say, there can go to find merchants ask for replacement product. Note that follow the industry default standard, bad point is below 3 is a “OK” phenomenon. Laptop appears certain amount of bright or dark point is a characteristics of LCD technology and any manufacturer, such phenomena were inevitable. Purchase notebook is also very need careful checking of LCD.

Purchase suggestions:

Presentation on laptop LCD screen is over here, then the face of these specifications, parameters, indicators, and other factors we pick a display of laptops do?

For some games lovers, may display the vertical aspect ratio for the 4:3 notebook more appropriate, because many games full screen classes only in the ratio of 4:3