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How to monitor the performance of color
2011-11-16 by seoer1
LCDs are listed for nearly 10 years, it has completely replaced the traditional color TFT LCD module become the absolute mainstream of the market, we also hereby ZOL monitor channel launched the "display-based 100 Q series of topics, from the subtle technical point of view by the members the basics of mystery behind these displays. Whether CRT tube monitor or a year to the current liquid crystal displays, they are gone from the era of black and white to color, then the LCD display shows exactly how the rich
80 I believe that many readers have experienced after a black and white TV era, the late start to rub the dead to the amount of evolutionary stages. The same is true of liquid crystal display technology, we used calculators, mobile phones can only be the beginning of the screen display black and white, before it can show a variety of colors, then the LCD monitor is how to do this it?
We are an art class, the teacher has to teach, "RGB" concept, and tell us through the red, green, blue (R, G, B) three colors to match, you can create a variety of colors. The technical staff in considering black and white into color screen when the screen as the use of this "simple" ideas, as long as three colors according to a certain percentage to "deploy", you can achieve realistic colors.
The role of the LCD panel so that light can only be a simple pass or shielding, so in theory it can only display black and white screen, can show up just a different gray-scale only. CRT monitor with a different kind of phosphor approach is that technical staff to add the LCD panel color filter layers overlap, you can achieve the same effect. The LCD panel color filter that can increase the red, green, and blue elements, in order to show the rich colors to create a more basic conditions. Then controlled by the IC chip deployment, the formation of a different color.
LCD modules and LCD TVs color posed by the three primary colors, while the light of three colors, each color can be divided into 256 color units (ie, 256 Levels, 256 shades of color), when we open or close the LCD panel, the light through the liquid crystal layer, and not simply just to show white and black, but on light transmission from white to black to show the various levels (in common DisplayX software in such a group of test images .)
256 Levels in the computer will use 8 bits to show (with 0 and 1 binary digits to represent one bit, 8 bit 2 of the 8 th, or 28 = 256). The first black Levels 0, the last representative of Levels 255 white, a mixture of three primary colors, we can show 28 × 28 × 28 = 16777216 colors, that we often 16.7M color or 8bit color. Generally, we will 16.7M colors as "full color" (Full color).
As the technology development and technical level positioning differences, some shades of gradation LCD panel will expand the number of bits, such as the introduction of 10bit or higher panel products, its ability to reach hundreds of millions of colors. In addition, manufacturers can control the light transmittance of the LCD panel, change the color depth of the concentration or the overall tone control panel, which affects the liquid crystal panel driver IC chip, the size of the voltage, to change its waveform. In addition, Sharp last year introduced the "four color" concept, that is, red, green, and blue after adding yellow (RGBY), can greatly increase the number of colors the display, but its IC circuit, filter sheet structure proposed higher requirements, the cost is relatively high, and only one vendor can grasp Sharp.
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