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Better than OLED! Samsung Strong QD-OLED Development

via:驱动之家     time:2020/4/13 7:01:10     readed:1460

Recently, according to information reported by foreign media, Samsung will close all its LCD production lines by the end of this year, including two in South Korea and two in China.

Samsung said all previously signed orders will be delivered by the end of the year.

Other aspects, The LG group, also from South Korea, earlier announced it had stopped LCD screen production at production bases in South Korea


And that means both Korean companies will stop producing and supplying LCD panels and exit competition in the market.

From the current market situation,As a result of the overall decline in the color TV market, the demand for the LCD panel, one of the mainstream panels used by large color TV sets, has declined, in addition to the Chinese enterprises in the context of catching up and surpassing, the Korean enterprises in the LCD market pressure has increased.

It is worth noting that as early as last October, Samsung display company announced that it had decided to close some LCD panel production lines in South Korea due to the decline of LCD demand and oversupply;

According to people familiar with the matter, samsung's most advanced LCD panel production line is 8.5 generation production line. There are two production lines in south korea, both located in yashan city, zhongqing south road, one of which has stopped production.

relying only on another production line to maintain the customer's demand supply, while in the official letter sent to domestic enterprises, samsung said it would deliver the LCD panel already booked to the customer by the end of this year.

It is understood thatSamsung's move was not due to problems with sales of LCD screens, but to shift the focus of its display from LCD to QD-OLED screensBecause its future development plan is to focus on the production of quantum TV, which requires qd-oled screen.

Some sources also pointed out that Samsung made such a decision, on the one hand, because in view of the recent worldwide low price of LCD screens, consumers' demand for such screens has gradually decreased.

And, on the other hand, under pressure from Chinese competitors,Because the LCD screen produced in China is occupying more and more market share. However, samsung didn't reveal the real reason for its plans to shut down LCD screens.

In addition, Samsung announced its latest plan to build a $11 billion factory capable of producing real qd-oled TV screens.

The factory uses the latest technology to make qd-oled screens, rather than the old technology.The new OLED can last up to 1 million hours, and is made of indium phosphide instead of toxic cadmium.


And what exactly is QD-OLED?In short, flat panel TV is divided into LCD and OLED TV. The former is backlight and the latter is self illumination. Since then, LED panel and quantum dot panel have been derived on the basis of LCD panel technology.

The traditional LCD panel uses CCFL fluorescent lamps, LED the television uses white LED lamps, there is no difference between the quality of the picture, but the LED is more energy-efficient, and can do thinner.

As for quantum dot technology, it no longer uses white LED backlight, but uses inorganic nanocrystals that can emit a variety of colors as backlight sources. Compared with the past, it has higher color gamut coverage and more accurate color performance. Therefore, many quantum dot TVs and displays on the market have labeled such as 100% NTSC color gamut and 130% sRGB color gamut, which was unimaginable before.

OLED screens are coated with very thin organic materials and glass substrates that glow when there is an electric current flowing through them.

OLED display screen can be made lighter and thinner, and the viewing angle is also larger. The disadvantage is that there is the risk of burning the screen and the cost is also very high. For example, the price of 65 inch OLED TV is generally tens of thousands of yuan.

With samsung's upcoming QD-OLED panel, however, it maintains a OLED picture advantage while combining quantum dot technology to give the screen an exaggerated color gamut and brightness.

Its working principle is the combination of quantum dots and OLED,Under the original OLED screen framework, an additional light-emitting layer is added, which emits blue light through blue OLED, and combines red light and green light from red and green quantum dots to finally form RGB primary colors.

Because the OLED in qd-oled panel only emits one color, which greatly reduces the manufacturing difficulty and production cost.

At the same time, it can also have a wider gamut coverage and higher brightness performance than OLED. And can greatly reduce the phenomenon of screen burning. In short, QD-OLED panel quality can exceed OLED, but the price is far below the latter, is a promising display technology.

As soon as this news came out, it was said that qd-oled could beat OLED with various advantages, but this was not the case.

First OLED technology has matured over the years, and prices are falling as technology matures.

At present, qd-oled is only a laboratory product. First of all, the product quality cannot be guaranteed, is not mature enough, and cannot be mass produced;

The second is laboratory products, which in theory are slightly lower than OLED traditional price, but even if they are currently available OLED mass production, prices will remain as high as they were then for technical reasons.


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