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.