In the end how strong LED backlight LCD contrast test

In early 2008, ViewSonic has released a heavyweight product VLED 221wm. ViewSonic VLED 221wm is called the O8 heavyweight product because the OptiColor backlight module technology industry leading technology with the ViewSonic VLED221wm unique color tuning technology, can provide high quality color reproduction function for the user. According to the definition of color gamut NTSC standard, VLED221wm color gamut up to 118%. It is also the color tuning technology as well as the LED backlight module, so that the VLED 221wm has a better color.

ViewSonic new generation machine emperor VLED 221wm

At present, the industry consensus is that the use of LED backlight is the best way to improve the color gamut of liquid crystal display. The so-called LED (Light Emitting Diode), light emitting diode, is a solid semiconductor light emitting device, it is used as luminescent materials using solid semiconductor chip, when the two ends with forward voltage, carrier in semiconductor composite that produces light induced photon emission. LED can be directly issued red, yellow, blue, green, green, orange, purple, white light. This kind of LED backlight technology in notebook computers, LCD TV has already been applied, but there is not much practice on the desktop lcd.

True white light source

In front of it has been said that the liquid crystal display LCD itself is not luminous, but by relying on the backlight light to display the image, so the LCD backlight template has a decisive role in the gamut. The current mainstream CCFL (cold cathode backlight) due to light limitation, cannot make the liquid crystal display to achieve broad color gamut display range, so the color gamut LCD mainstream are only around 70% of NTSC, even with the design to improve the color gamut range has larger, but the effect is not very ideal, at the same time may also reduce the consequences of lamp life.

Aimed at the shortcomings of CCFL (cold cathode backlight), LED light-emitting diode was sent with high hopes. Compared with the CCLF cold cathode fluorescent lamp, LED light emitting diode has the advantages of wide color gamut, adjustable white point, high light rate and long life, etc., at present, there are two kinds of LED backlight and LED backlight.

In everyone's attention to color, the LED backlight can after a light guide dispersed through the mirror reflection after reaching a uniform brightness, in addition, the onboard software can be backlit to color all the control, that is no longer need to compensate for the shortcomings of lamp, it can achieve a truly white light effect. In addition, the built-in sensor circuit and material help, users can also according to their own needs in the SpectraView in the backlight adjustment, that is to say the color is more rich, able to provide general LCD can not show the color range. At present, the color gamut of LCD with LED backlight can reach more than 110%.

ViewSonic VLED221wm on the left side of the screen

ViewSonic VLED221wm on the left side of the screen

Show great effect PK second battle, opponent 3000:1, color gamut: 97%, wide view panel

ViewSonic VLED221wm on the left side of the screen

ViewSonic VLED221wm on the left side of the screen

Show great effect PK third battle, opponents CCFL backlight notebook

ViewSonic VLED221wm on the left side of the screen

ViewSonic VLED221wm on the left side of the screen

ViewSonic VLED221wm on the left side of the screen

Show great effect PK fourth battle, opponents LED backlight notebook

ViewSonic VLED221wm on the left side of the screen

ViewSonic VLED221wm on the left side of the screen

ViewSonic VLED221wm on the left side of the screen

Summary:

Test whether after the human sense of shooting or screen picture effect, ViewSonic VLED221wm displayed a wide range of colors.