Why there is noise when adjusting the screen brightness?

As the screen brightness adjusting is achieved by changing the screen size of the coil current. It is a normal physical phenomena the coil current changes in electricity eventually lead to the coil make voice. Because of the sensitivity of the human ear and different coil quality and shielding technology, the final results differ in the sound performance.  

Why the screen around would heat?

Actually, the location of heating is the ignition coil in the LCD screen.That is the normal thing the location of the ignition coil heat after working a period of time.

What causes that a bright spot than elsewhere in screen ?

This phenomenon is known as LCD bright spots, is a physical injury of liquid crystal screen . I t is mainly due to the screen panel by the external pressure or got the heatand lead to a slight deformation.

Will the defective pixel on the LCD screen spread?
Certainly not. Each point of a liquid crystal particles on LCD screen are relatively independent, non-influence each other.

Why you can see displayed vaguely while the screen in not bright?

This situation is due to backlight or ignition coil which control the screen backlight damaged.

What’s the difference between bright spot and dark spot?

In fact, they are all belong to defective pixels whether it is bright or dark spots. The black spots are relatively less vulnerable to note that become dark spots. If it is red, green, blue or white spots,  they are easy to be noted because the color is lighter in the backlight, so it is regarded as bright spot of habit.

Can defective pixels be repaired?

Possibly not. LCD screens defective pixels belonging to the physical damage, and therefore can not be repaired.

How do I clean the stains on the LCD?

You can buy the LCD screen special cleaning agents.Remember not to use corrosive organic solvents (such as alcohol, etc.) and water to wipe out LCD screen. When you are wiping, please shut down first and pay attention to according to a certain direction, suggested that volume growth in a soft cloth strips, and then from left to right or from right to left, one-way cleaning, finally let the screen dry naturally.

How defective pixels happen?

LCD screens defective pixels is a physical injury which can not be avoid in the production and use.In most cases it is produced on the screen manufacture, it also can result in defective pixels in use by the impact or natural wear and tear. Defective pixels will be generated as long as a single pixel or more which are composition of the three primary colors, while the production and use are likely to cause damage.

What are defective pixels?

The pixel phenomenon, more common than “missing/dead” pixels, results when a transistor occasionally shorts on and results in a permanently “turned-on” (red, green or blue) sub-pixel.There are some possible corrective measures, such as “killing” a transistor using a laser, however, this just creates black dots which would appear on a white background. Fixing the transistor itself is not possible after assembly. Additionally, it is not possible to turn a “lit” pixel off, except for the aforementioned laser method, which essentially just makes the transistor inoperative, thus resulting in a black dot.

What does TFT mean? What is the difference between TFT and LCD?

LCD (Liquid Crystal Display), is the LCD screen. Are generally divided into two kinds of monochrome and color LCD screen, monochrome LCD is currently almost out of the notebook market, while the color LCD is still sustainable development. STN color LCD and TFT mainly divided into two kinds, of which TFT (Thin Film Transistor) LCD, also known as active-type electric crystal thin-film transistor liquid crystal display, which is known by many people’s true color LCD display; DSTN (Dual -Scn Twisted Nematic) LCD, dual-scan LCD screen that is. Is an STN LCD display is now out of the market.

What is the meanning of VGA, SVGA, XGA, SXGA +, SXGA, UXGA, WXGA, WSXGA ?

The letter combinations represent different LCD specifications, including VGA for the 640 × 480, SVGA is 800 × 600, XGA is 1024 × 768, SXGA is 1280 × 1024, SXGA + is 1400 × 1050, UXGA for the 1600 × 1200, WXGA for 1366×768,WSXGA for 1280×854.

How to restore the dark screen to bright?

Lamps have already gone out if you confirm that the screen is brightest and still evident dark than before when used in AC power supply. You must replace the corresponding models of lamp.

Will the heat affect the LCD?

Only the heat reach a certain temprature. For example,  it will lead LCD screen appear a row of dead pixels or make LCD brightness uneveen of you put screen direct expourse under the sun. But it does not have any effect when work in the generally heat .

What are laptop screen size ?

Generally are 10.4-inch, 12.1 inches, 13.3 inches, 14.1-inch, 15-inch, 15.4-inch, 17-inch. At the same time the majority of notebook screens are now using a widescreen LCD. The same diagonal size LCD, the actual size of wide-screen is smaller than the normal 4:3
screen.

Does laptop screen have radiation on the human body?

Any electronic device will have radiation on the human body, but the laptop’s LCD screen is much smaller as compared with CRT display inthe radiation on the human body. Laptop screen can be very easy to reach environmental standards, is a relatively green
electronic products.

How to open LCD screen reduce shaft wear and tear?

The best way is using both hands to open and close the screen softly and slowly, and avoid uneven dictate your hands on the screen, that can delay the screen deformation and fracture which due to uneven force.

Can replace the screen backlight tubes?

Sure. However, you must use the corresponding types of backlight lamp. To replace lamps also need to disassemble the screen. It may damage the the reflector panels and TFT panel, eventually leading LCD screen display not as effectively as before. We do not recommend this method unless can not find can be used screen. If you must adopt this approach, please entrust professional maintenance staff.

Is it able to link laptop LCD screen to desktop computer?

The answer is yes, but it is a difficult problem. If you want to implement this idea, you must transform the laptop LCD screen lamp, liquid crystal display power supply, data cable, frame fixed and other parts, so that it can compatible with desktop graphics cards. It is really difficult.

Why LCD will become yellow or red?

Using LCD certain period of time, especially always adjust to the maximum brightness, screen aging itself and the lamp will be yellow. Cold boot screen is mainly red lamp aging, you can replace it.

What does Screen cable do?

In fact, A laptop LCD cable also known as video cable, display cable or screen cable. This cable transfers data signal from the motherboard and video card to the LCD screen. Also, most video cables supply high voltage DC power to the screen inverter.

Why are laptop screen bright colors looked nothing like the desktop computer?

If you are referring LCD comparison, then compare the two you will understand that laptop screen needs power-saving, lightweight, and reduce the thickness, so the majority of laptop computer screen is only a lamp, compact structure, while the desktop LCD monitors are not subject to power constraints, in the light and reduce the thickness requirements are much more lenient than the laptop computer screen, the desktop LCD can spend the root tube and more liberal use of the internal structure can be put down More reflective panels to enhance the contrast and color saturation, they are inherently in a different starting point on, so laptop LCD screen color can not compare to desktop is normal.

Why the screen flicker?

When the brightness down to a certain extent, many of the notebook screen flicker phenomenon occurs. Some graphics cards (such as some models of the ATI Mobility Radeon 7500 or 9000) will also start the power-saving feature automatically reduces the refresh rate causes the screen flicker. Of course, there may be due to problems with the screen’s own lamp caused this phenomenon, but this is relatively rare.

Whether it is necessary to affix LCD protective film?
It is not recommended to do so, because any protective film will lower the actual LCD display, especially in the clarity and sharpness has become more apparent protective film generally very difficult to get smooth paste without air bubbles, in addition to showing machine and the use of environment is very bad notebook computers, the LCD is not recommended to affix protective film.

LCD white screen, what is the reason?

This is generally due to the loose cable inside the LCD screen and motherboard, or caused by loose wiring, there are very few cases because the software (drivers and virus) causes, if it is in the boot immediately after the white screen black and white. Or self-test are generally the reasons for the hardware into the operating system after the black and white, usually causes the software.

What components are LCD screen contained?

In short, notebook computers LCD screen mainly include the LCD panel, TFT panel and backlight module board composition, and another drive TFT panels and lamp components. A fixed assembly of the metal frame of the screen, as well as the connections between the various components row lines.

Why color lines appears on the LCD screen?

This situation is divided into two kinds. If it is severe full color lines and each line is not through an entire screen, it is mostly caused due to graphics problems, such as memory overheating, or driver error, or if it is a Dorgan lines throughout the screen and the location of a fixed color unchanged, mostly due to LCD screen cable problems.