Raise color gamut by 30%! Quantum dot backlight helps liquid crystal quality

[PConline News] Recently, new breakthroughs have been made in LCD technology, and quantum dot backlight technology has attracted widespread attention in the industry. After years of research, companies such as 3M, Nanosys, and QDvision have developed quantum dots embedded in optical films (QDEF) and will gradually apply them to LCD backlights.

The quantum dots themselves have light-emitting properties. The quantum dots in the quantum dot film (QDEF) will generate red (R) and green (G) light under the illumination of the blue LED backlight, and partially pass through the thin film (B) White light is mixed together to enhance the lighting effect of the entire LCD backlight. This technology can effectively enhance the color saturation of the LCD on the one hand. Compared with traditional high color gamut technology, quantum dot technology can increase the LCD color gamut by 30% without increasing the thickness of CF film.

On the other hand, it can also increase backlight brightness and save energy. Therefore, 群intell analysis believes that quantum dot technology will effectively solve the high color gamut caused by traditional methods but low brightness, while high brightness must increase the number of LED chips and increase the dilemma of energy consumption and cost. It will undoubtedly provide the best solution for LCD products competing with OLED in high color gamut.

At present, the research and development of quantum dot backlight technology has gradually matured and is expected to be pushed into the consumer market during the year. It is understood that Samsung Electronics, LGE and TCL have exhibited LCD TVs with quantum dot backlight technology for the first time at the International Consumer Electronics Show (IFA) in Berlin on September 5th. According to Σintell's survey, global first-line brand manufacturers are actively developing large-size QD LCD TV products. Among them, Samsung Electronics will mass-produce QD LCD TVs in the first quarter of next year, and SDC will provide Open cells. The first products will be 55” and 65” in size, and will be positioned in the ultra-high-end market.

TCL will use Huaxing 55” UHD panel and 3M QDEF with a color gamut of 105% and plans to begin mass production as early as the end of 2014. LGE has also been collaborating with QD vision to develop quantum dot backlight technology and plans to launch QD LCD TVs, but 2015 The year's product strategy will still focus on OLEDs to promote products, and Sony also plans to launch more than 55' QD LCD TV products.

Since the quantum dot film has the characteristics of a nano film, the particles are very fine, the flatness of the film and the uniformity of the particles in the production process are required to be high, and the production yield is low, resulting in the present QD LCD module composition more common than the ordinary LCD module. The group is more than 30% taller. Therefore, 群intell believes that QD LCD TV will initially target the large-size ultra-high-end market, and the market penetration may still require a longer process. In the future, the increase in film production yield and the improvement of LCD backlight structure will be achieved. It will be a key factor in determining the cost reduction.

PConline Home Appliances Channel Comments: The TV industry from 3D to smart, then 4K, is now working hard to develop the wide color gamut technology. From the context of this industry hotspot technology we can understand that in the past experienced cool and smart these two additional After the functional hotspots (actually, they were not well-accepted by the market), the industry gradually returned to rationality and began to refocus the technical research and development on image quality. This is a welcome change.


Manufacturers show quantum dot backlight color enhancement technology

The maturation of 4K technology can be said to be an inevitable result of the trend of large-screen LCD TVs. After increasing the resolution, how to further improve the picture quality has become the focus of attention. In Japan and South Korea, large-scale manufacturers have gradually cleared the OLED market. Under the background of efforts, LCD upgrades have been picked up by the industry. This is not because the OLED technology is inferior to LCD, but the LCD still has a broad evolutionary prospect in the mature period, and the market is not expected to lower the price of TV. The middle course.

After improving the color gamut to enhance color saturation, LCD image quality parameters have not been far behind OLEDs, and OLEDs only have advantages such as flexibility, low energy consumption, and thinness, but if LCD technology continues to improve, it is hard to say that the market will leave How much space and time is left in OLED?


Quantum dot backlight can also bring more accurate color display

In general, the TV industry has gradually returned to the picture quality line. After the first-line panel maker introduced the QD backlight technology, the technology became the mainstream display technology for TV products. The development of this technology will continue to strengthen the LCD. With the competitiveness of the technology camp, it is not impossible for OLED technology to die. We certainly hope to obtain a better TV picture quality, but if there is a technology that is more economical and in line with market laws, it is not bad for consumers, and we hope to see the finished product of the technology enter the market on a large scale.

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