laptop screen is based on the liquid-crystal matrix, which is one of the most important and expensive components of your computer.Knowledge of the basic parameters of the matrix can help both when choosing a laptop, and at its own repair.
At the heart of all modern liquid crystal displays are open in 1888, biologist Frederick Raynittserom liquid crystals.One of their most important properties is the ability to organize molecules under the influence of electric fields.The rapid development of electronics in the twentieth century led to the first monochrome and then color liquid crystal displays.
main elements of the LCD display is a liquid crystal matrix, the lamp will light, and a cable for connecting the metal frame rigidity.Matrix itself composed of two transparent electrodes between which liquid crystals are located, and the two mutually perpendicular polarization filters.Liquid crystal molecules are initially aligned in one direction, an external electric field changes their orientation, whic
h allows to change transparency of the screen.To control each pixel of the screen individually, addressing used in rows and columns.To ensure the desired brightness is used lights, typically as a light source mounted miniature fluorescent lamps or LEDs.
The notebook matrix is directly under the outer protective layer of the screen.Note that the liquid crystal matrix is one of the most vulnerable elements of the computer, so it should be protected from shocks and other mechanical damage.In case of violation of the integrity of the matrix it is necessary to change.Typically, this operation is carried out in the service centers, but it can be done independently.
To get to the matrix, it is necessary to disassemble the laptop screen, it is first necessary to pry gently with a screwdriver and remove the rubber plug on the screen that rests in the closed position.Below them are the screws, they must be unscrewed.You can then remove the outer plastic frame.It is further mounted latches, so it may be accompanied by the removal of quite a loud bang.
removing the frame, you will see a matrix, hold for a few screws, usually two.They, too, should be unscrewed.Then you can remove it and put it face down on a soft cloth.Pay attention to the cables, they must be carefully disconnected from the connectors.The procedure for disassembly is finished, the matrix is removed.Now it can be replaced with a new and complete the assembly in the reverse order.
When choosing a laptop should ask about the type of display.In particular, the LED lighting matrix is much more reliable than made on the basis of fluorescent lamps.In addition, it is much more economical, allowing the laptop to work much longer battery life.