LCD dead pixel on the three packs is how countries like?
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Users questions: National Warranty is to provide a few points can be returned is 335
Experts answer: national standards means that the three bright spots or dark spots three are counted properly qualified. Highlights of dark spots increases the total number of five, is also eligible. If the purchase ago, merchants or manufacturers does not give you specific details of that country in accordance with the above Standard implementation. A few days ago to accompany people to buy laptop, buy a former special understood, in turn installed the software, I saw no dead pixels before they pay him the money. Money to pay off the discovery of dead pixels, it also late. I have a test to share information in a small display software, copying it U can drive in the election monitors .48 K Monitor testing tool http: ** ishare.sina.com.cn * cgi-bin * fileid.cgi? Fileid = 1117786 test tool displays a small, comprehensive display of the performance test to help you choose a good monitor . ```````````````````````````````` Bright dead pixel LCD monitor causes and prevention of liquid crystal displays using light after some time * bad points of the fundamental reasons for that? an LCD screen with only one principle of LCD screen panels looks, in fact, It mainly consists of four blocks (filters, polarizers, glass, cold cathode fluorescent lamp) combination of this to you briefly elaborate. Filter: TFTLCD panel was able to produce color changes, mainly from the color filters, the so-called liquid crystal panel driver IC through the voltage change Liquid crystal molecules in a row to stand up to the display, while the color of the screen is black and white, through the filter can become a color pattern. Polarizer: Polarizer can convert natural light into linear polarized light components, including the role of performance from the straight line is the incident light to be separated with a polarizing element, which Part of it through, the other one is absorption, reflection, scattering and other effects to cover, reduce the production of light * dead pixels. Cold Cathode Fluorescent Lamp: characterized by small size, high brightness, long life. Cold cathode fluorescent lamps by specially designed and processed glass can be used repeatedly in the rapidly after lighting can Enough to withstand up to 30,000 times the switching operation. As the cold cathode fluorescent lamps use three-color phosphor, so the intensity was increased, lumen reduction, color temperature performance, resulting in very low heat, effective protection of the life of our liquid crystal display. Second, the liquid crystal light * bad points of the Causes and Prevention 1 , Manufacturers of reasons: It is also known as dead pixels * LCD screen bright spots, is a liquid crystal screen of a physical injury, mainly due to bright spots on the part of the screen by the external pressure within the reflector or slightly deformed by the heat To. Each pixel on the LCD screen has red, green, and blue primary colors, they mix together Of a pixel to produce a variety of colors. 15-inch LCD display, for example, the LCD screen area of 304.1mm * 228.1mm, a resolution of 1024 * 768, each liquid crystal pixel RGB from the RGB units. Pour the liquid crystal pixel is formed by a fixed mold " Liquid crystal cell ", such" crystal box "in the 15-inch LCD display number is 1024 * 768 * 3 = 2,350,000! A" crystal box "the size of how much? We can easily calculate: high = 0.297mm, W = 0.297 * 3 = 0.099mm! In other words, in the area of 304.1mm * 228.1mm under the densely lined with 2.35 million area the size of only 0.297mm * 0.099mm "liquid crystal", and the LCD also incorporates a separate box behind the driver of the liquid crystal cell drive tube. Obviously, this production Process on the production line requirements are very high, with current technology and processes, and can not guarantee that each batch produced by the LCD screen does not light * dead pixel, manufacturers generally avoid light * dead pixels to separate liquid crystal panels, to no light * few bright dead pixel or dead pixel LCD screen * High power supply with the manufacturer, and those who Leung * LCD screen more dead pixels are generally cheap cheap supply of small liquid crystal display manufacturers. Technically, light * dead pixel is a liquid crystal display panel can not be repaired pixels, is generated in the production process. LCD panel liquid crystal pixels from the fixed component, the size of 0.099mm pixel LCD Behind the three transistors, corresponding to red, green, blue filter, any one of them is defective transistor circuit will cause the pixels to be a light * dead pixels. Moreover, in each liquid crystal pixel driver behind the integration of a single micro-driver control it. If the red, green and blue primary colors in one or more production
Experts answer: national standards means that the three bright spots or dark spots three are counted properly qualified. Highlights of dark spots increases the total number of five, is also eligible. If the purchase ago, merchants or manufacturers does not give you specific details of that country in accordance with the above Standard implementation. A few days ago to accompany people to buy laptop, buy a former special understood, in turn installed the software, I saw no dead pixels before they pay him the money. Money to pay off the discovery of dead pixels, it also late. I have a test to share information in a small display software, copying it U can drive in the election monitors .48 K Monitor testing tool http: ** ishare.sina.com.cn * cgi-bin * fileid.cgi? Fileid = 1117786 test tool displays a small, comprehensive display of the performance test to help you choose a good monitor . ```````````````````````````````` Bright dead pixel LCD monitor causes and prevention of liquid crystal displays using light after some time * bad points of the fundamental reasons for that? an LCD screen with only one principle of LCD screen panels looks, in fact, It mainly consists of four blocks (filters, polarizers, glass, cold cathode fluorescent lamp) combination of this to you briefly elaborate. Filter: TFTLCD panel was able to produce color changes, mainly from the color filters, the so-called liquid crystal panel driver IC through the voltage change Liquid crystal molecules in a row to stand up to the display, while the color of the screen is black and white, through the filter can become a color pattern. Polarizer: Polarizer can convert natural light into linear polarized light components, including the role of performance from the straight line is the incident light to be separated with a polarizing element, which Part of it through, the other one is absorption, reflection, scattering and other effects to cover, reduce the production of light * dead pixels. Cold Cathode Fluorescent Lamp: characterized by small size, high brightness, long life. Cold cathode fluorescent lamps by specially designed and processed glass can be used repeatedly in the rapidly after lighting can Enough to withstand up to 30,000 times the switching operation. As the cold cathode fluorescent lamps use three-color phosphor, so the intensity was increased, lumen reduction, color temperature performance, resulting in very low heat, effective protection of the life of our liquid crystal display. Second, the liquid crystal light * bad points of the Causes and Prevention 1 , Manufacturers of reasons: It is also known as dead pixels * LCD screen bright spots, is a liquid crystal screen of a physical injury, mainly due to bright spots on the part of the screen by the external pressure within the reflector or slightly deformed by the heat To. Each pixel on the LCD screen has red, green, and blue primary colors, they mix together Of a pixel to produce a variety of colors. 15-inch LCD display, for example, the LCD screen area of 304.1mm * 228.1mm, a resolution of 1024 * 768, each liquid crystal pixel RGB from the RGB units. Pour the liquid crystal pixel is formed by a fixed mold " Liquid crystal cell ", such" crystal box "in the 15-inch LCD display number is 1024 * 768 * 3 = 2,350,000! A" crystal box "the size of how much? We can easily calculate: high = 0.297mm, W = 0.297 * 3 = 0.099mm! In other words, in the area of 304.1mm * 228.1mm under the densely lined with 2.35 million area the size of only 0.297mm * 0.099mm "liquid crystal", and the LCD also incorporates a separate box behind the driver of the liquid crystal cell drive tube. Obviously, this production Process on the production line requirements are very high, with current technology and processes, and can not guarantee that each batch produced by the LCD screen does not light * dead pixel, manufacturers generally avoid light * dead pixels to separate liquid crystal panels, to no light * few bright dead pixel or dead pixel LCD screen * High power supply with the manufacturer, and those who Leung * LCD screen more dead pixels are generally cheap cheap supply of small liquid crystal display manufacturers. Technically, light * dead pixel is a liquid crystal display panel can not be repaired pixels, is generated in the production process. LCD panel liquid crystal pixels from the fixed component, the size of 0.099mm pixel LCD Behind the three transistors, corresponding to red, green, blue filter, any one of them is defective transistor circuit will cause the pixels to be a light * dead pixels. Moreover, in each liquid crystal pixel driver behind the integration of a single micro-driver control it. If the red, green and blue primary colors in one or more production
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