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Hisense's new weapon:What kind of black technology is Dual Cell overlay screen

Time:2019-07-01 10:43:24


In July, Hisense will launch a new TV. And it adopts a new technology called "folding screens." But instead of "folding screens," it's "two screens on top of each other." In DISPLAY CHINA 2019 from J

What is Folding screen?

According to BOE, this technology adopts the Dual cell design of the black and white cell and the color cell, equipped with HDR (high dynamic range rendering) technology, which can make the bright part of the image brighter and the dark part darker, achieving ultra-high contrast ratio of 160,000:1——The black detail is close to that of an OLED TV, while the highlighted parts are brighter than the OLED TV.

(the effect of OLED、Folding Screen和8k TV in turn)

This is almost a "customized" new technology for Hisense, which has always taken "high quality" as its product innovation idea. After all, Hisense has launched OLED TVS, but like all color TV manufacturers, it faces the dilemma of "insufficient supply of OLED color TV panels". Efforts to explore LCD products of high quality picture and performance  is now the best way  to meet consumer demand for high-end color TV .Especially in the 65-85 inch range, LCD TV has the upstream support of 10.5\/11 generation line, its market supply capacity is incomparable to only 8.5 generation line support OLED TV .

In boe Dual Cell concept, striving to achieve display effect and contrast level similar to OLED is the core purpose.This technology, combined with hisense ULED and QLED technologies, is bound to create new products with display effects that catch up with OLED products and lead in brightness and other indicators.

Inspiration around the backlight!

Although the new technology is called "folding screen", industry experts prefer to think of it as a "backlight technology".The imaging system of LCD TV mainly consists of screen, backlight and control,the influence of backlight on picture quality is very profound.

First of all, the color saturation of backlight is the color gamut level of LCD TV.  ULED and QLED TV technologies developed in recent years are technologies that utilize new materials to improve the color saturation of LCD TV backlight and expand the color gamut coverage ability of LCD TV.  Under the background of the lack of progress of color filter technology, the color innovation of LCD TV based on the improvement of backlight quality becomes the only way of "lascivious".

Second, HDR new requirement. The hot HDR concept of LCD TV in the last three years has promoted the popularity of "partition backlighting" application. In fact, from the technical principle, this technology has a certain degree of application 20 years ago.However, at that time, there was no HDR content, the improvement significance of backlit partition control screen cannot be played out. Since the partition control backlight, naturally involved in the "into how many areas".Now the fully active control mini-led can achieve the technical upgrade of thousands to tens of thousands of partitions, thus providing better HDR effect.

Third,Dual Cell folding screen technology allows "partition without limit". That is, the local dimming (local backlight modulation) technology of millions of individual areas is realized by adopting the partition dimming control of the scale of LCD panel pixel——on your TV, every millimeter of your screen can be a number of controllable backlighting zones. The technology achieves partitioning accuracy that no conventional backlight technology can achieve, even the mini-led.

Four,Dual Cell is not just backlit partitions.Because, the real restriction of LCD TV contrast and dark gray scale performance is " leakage problem when closed liquid crystal pixel ."In traditional backlit partitions, which are not pixel-level partitions, the dimmest partition brightness depends on the brightest pixel requirements of the display area, and the dark detail is still "difficult to match the completely closed pixel of OLED.With Dual Cell technology, partition sizes that match the resolution of the home screen provide "unique brightness" control for each pixel,That is, A pixel that displays a dark gray scale significantl,the resulting input light is significantly reduced, to the theoretical limit.

To sum up, it can be seen that the core of overlay technology is still developing around backlight technology, HDR display requirements, and pixel leakage of liquid crystal. And successfully overcome the three aspects of the "major bottleneck". As such, it is an "unprecedented" technological advance. 

Consumers are most concerned about, how much does the cost change? 

 Dual Cell technology, after all, adds a new LCD screen. Will the cost of TV sets change dramatically? This is the best interests of consumers!Dual Cell!

 LCD screens make up less than 50% of the cost of large, high-end TVS. At the same time, theoverlay screen adds a black and white screen, that is, no color filter film and other product structures. Third, Dual Cell overlay technology is used to achieve super backlight partition control -- which means the original backlit partition is partially replaced. In particular, there is no need to use the high - grade, high - cost backlighting technology of mini-LED.

Therefore, the cost of Dual Cell overlay screen is increasing and decreasing. Overall, industry insiders believe the cost increase should account for about two-thirds of the current price of large-size TVS, which would be around $150 for 65-inch 4K models. Cost changes are not significant. This is one of the worst news for OLED products, which are still expensive.

Overall, Dual Cell overlay screen is a new technology with significant improvement, sufficient supply and reasonable cost changes.These three aspects combine to form the "core competitive advantage" of the technology.

The change of supply pattern of high-end TV!

For  Dual Cell overlay screen technology of Hisense and BOE, the industry believes that the biggest change is the new situation of "high-end TV global industry chain".

On the one hand, Japanese and Korean screens are often used in traditional high-end TVS. Although the local color TV panel has risen by a large margin, it still occupies the market share with a low price and lacks the right to speak in the high-end market. Hisense and BOE cooperate with Dual Cell Dual display, which not only allows BOE to accelerate the development of high-end color TV display market; at the same time, it also increases the supply of local upstream industrial chain for Hisense, a color TV giant, and further strengthens its supply base for global expansion.

On the other hand,  in recent years the LCD market capacity expansion is more severe, and the consumer market is relatively depressed. Both constitute a cycle of relative oversupply that can last for years.Dual Cell will double the consumption of LCD panels for a single TV set, which will obviously help alleviate the upstream supply surplus, improve the capacity utilization of panel companies, and even change the price war of "relative overcapacity" in the industry.

Dual Cell overlay technology is not only a new technology innovation, but also a new opportunity for structural adjustment of the "supply chain". And the impact on supply chain adjustment will extend to another area.

At present, an important application direction ofthe MINI-LED technology  is the high zonal back light of high-end HDR LCD TV. With Dual Cell overlay technology, this backlight partition is transferred to the dedicated black and white LCD screen,the market demand for MINI-LED backlight will change greatly. Dual Cell overlay screen can be partitioned in size and its precision is far more than MINI-LED. What's more, the new addition of Dual Cell overlay technology is a highly mature product component. The MINI-LED technology is still in the development stage.

In conclusion, hisense's new Dual Cell Overlay screen TV will aspire to be a "prehistoric power" to "leverage the overall industry structure".It not only involves the technology orientation of the high-end color TV market, but also deeply concerns the pattern of the upstream industrial chain, as well as the evolution process of OLED and mini-led.The advent of this technology is a major "innovation" not seen in recent years.



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