LCD big advantage to lead the market to catch up with AM OLED

OLED-display.cnLEDw.com/ >LED display market will grow rapidly since 2008, its application will also be expanded to the size of laptops and flat-panel TVs and other display.

AMOLED (active organic light emitting diode) is considered to be the existing LCD, PDP display technology is one of the most powerful competitors, because it does not need to use the backlight panel, faster response speed, higher contrast, can be made very thin, but the power consumption is much lower. However, LCD also did not sit still. For the challenge from the AMOLED, the new technology also makes the LCD display in color, contrast, panel thickness and other aspects have been significantly improved, power consumption is further reduced. AMOLED technology leading edge has been greatly reduced.

The LCD industry has been very mature supply chain and large-scale production costs and other advantages, but also to catch up with or even beyond the LCD AMOLED technology set up a solid barrier. It can be said that, if you can not re establish their own technical advantages, or to quickly realize the lower cost of the product, AMOLED is likely to be covered by the development of LCD and other mature technology, thus choking death.

LCD low power LED backlight module embrace

DisplaySearch is expected in 2008, the global flat-panel display output value will reach $120 billion by 2015, shipments of flat-panel display area will reach all display 98%, become the mainstream market absolutely, which accounted for 88% of the total area of LCD shipments, as the main application technology, plasma display technology (PDP) will occupy 8% of the proportion. The remaining 2% of the shipments are other flat-panel display technologies such as OLED, flexible display partition.

The increasing size of the LCD terminal is increasingly plagued by power problems. In order to reduce power consumption, LED backlight, MiniVDS, DFR and many other LCD module manufacturers focus on the topic of. In particular, it is the most important to reduce the power consumption on the backlight.

At present, the use of LED backlight instead of CCFL has become the main trend of the industry, SONY, SHARP, Samsung and others have begun to use LED backlight on large size LCDTV. Is Ivo Li Yaqin said on the "international electronic business" reporter, the company she is gradually used to replace the CCFL LED backlight, which alone can reduce 2/3 power LCD module. She also said that this trend is particularly evident in the notebook computer equipment, "at present, AU Optronics, LG and Samsung are doing. "But LCD TV with LED backlight is not a lot of.

DisplayBank report shows that the current laptop market LED backlight penetration of about 13%, while the proportion of LCD TV is small enough to be negligible. The report said that by 2012, the proportion will rise to about 60% and about 15%. DisplayBank analyst Yu Weilong believes that the main reason for the existence of the gap between the laptop power consumption, especially standby power requirements are more urgent. In addition, due to the smaller screen used in notebook computers, LED backlight applications will be slightly lower. In addition, the high cost of LED backlight is also a major obstacle to its use in LCD tv. However, with the gradual reduction of costs, the problem will gradually be resolved.

Power is not the only reason to convince people to embrace the LED backlight. NXP solid-state lighting marketing and business development director JacquesLeBerre pointed out that the quality and thin trend of this technology is also an important reason for the popularity in the future.

Zhang Kaijun: the brightness of the environment is determined by the light sensor to determine the brightness of the backlight, but also sensing the LCD screen state, can help to reduce power consumption.

LED light energy to consumers unprecedented visual experience. He said, CCFL lost 50% of the video screen brightness, and LED will not have any such losses, but also save a lot of energy consumption. In addition, both in the IFA or CES conference, you can see the ultra-thin TV has become a trend, LED backlight can save about 30~40mm of the body thickness, which is its advantage. "

However, dianjing science and technology limited company image display affairs office director Zhang Kaijun also pointed out that reduce power consumption and increase the maximum brightness of the two panel, basically is the conflict, this is also the common challenges facing the LCDTV manufacturers. Stand in the driver IC the designer's point of view, he said, can be from two aspects to assist LCD module manufacturers to achieve the goal, the first is to improve the LED backlight power conversion efficiency of second is achieved through the light sensor panel and the backlight brightness is the most suitable. Dianjing science and technology development focus on the latter, the design through the ambient light sensor is sensed by the brightness of the environment, to determine the backlight brightness, and sensing liquid crystal screen itself, PWM way to adjust the regional backlight brightness, not only can reduce the power consumption, but also can improve the picture contrast.

Similarly to the light sensor as the main technology driven IC design company Microsemi days before and Innolux launched a collaboration of large size RGBLED backlight driver LCDTV, the television company with the integration of Microsemi Digital Advanced Lighting Technology (DigitalAdvancedZonELighting, DAZL) LED driver, scanning backlight mode it supports backlight LED (1-D) and local dimming a more sophisticated model (2-D).

Scanning backlight mode greatly reduces the phenomenon of motion blur, and the regional dimming mode, in addition to reducing the motion blur, but also greatly improve the contrast, and