Next generation iPhone screen: OLED PK low temperature polysilicon

Apple are pulling "every act and every move, many fruit powder" nerve, also in the capital market to stir up waves. May day, the white iPhone4 in 28 countries and regions, including China, including simultaneous listing, was sought after. The significance of Apple's replacement of the screen is more important to the industry, its path will directly affect the development prospects of related fields.

On the first day of April 28th, Apple's flagship store in Shanghai to purchase two per person through the method to protect the supply; while Shanghai Suning white iPhone4 of the first shipment of 1000 units, a listing on the sold out, the pursuit of remarkable.

It is understood that the white iPhone4 and the original version of the black is only the difference in shape, functional aspects of the same. It is no wonder that the industry suspected that such sales can continue? This is the apple must face the problem: product sales can not rely solely on the appearance of color replacement. Fans eagerly look forward to the next generation of iPhone qualitative change, especially in the selection of products on the screen.

Although iPhone5 has not yet been introduced, but it has been the first disclosure of the media iPhone related news 6, cause the great attention. The report claims that Apple has signed an agreement with SHARP to produce low temperature polysilicon (LTPS) LCD screen, is expected to be used in the new generation of Apple's iPhone products listed in 2012.

From the day before the meeting of the 2011 China future display technology development forum was informed that apple before the launch of iPhone4, who had personally inspected the Samsung SMD OLED production line, to use Oled as a display, but because of insufficient supply capacity and the choice to give up. The industry is expected, Apple's next generation iPhone5 to bring enough new ideas to the market, is bound to have a breakthrough in the display. At this time, SMD outgoing investment to expand the production of OLED news. Insiders can not help but guess, Apple will be included in the OLED screen procurement plan has been put on the agenda? The next generation of Apple screen in the end will be OLED or low temperature polysilicon?

Low temperature polysilicon is still based on the traditional liquid crystal display technology, OLED is almost recognized as the next generation of liquid crystal display after the mainstream. OLED organic light emitting diode (Organic Light-Emitting Diode), self luminous materials, does not require backlight, wide angle, uniform quality, fast reaction speed, color fidelity, low energy consumption, so it is known as the "fantastic display". DisplaySearch released data show that in the next 5 years, the main field of application for 10 years OLED in mobile phone, TV, laptop, vehicle display and other electronic consumer products.

OLED is divided into active AMOLED and passive PMOLED according to different driving modes. Among them, the small size PMOLED display technology is mature, 3 inches of the following products have entered the market; small and medium size AMOLED technology is mature, a large number of products ready to market.

At present, the global energy production AMOLED mobile phone panel, only Samsung SMD, occupy more than 80% of global production, but the market demand is very large, a serious shortage, or even a mobile phone manufacturer "production to screen" phenomenon. In addition to apple, Lenovo CEO Yang Yuanqing had to ask OLED to prepare for the production of manufacturers, Le Phone.

According to Samsung SMD close to the source, SMD executives had made a special trip to the domestic research, revealed the next three years will expand the production capacity of OLED times the idea of a new generation of lines and will be built in the next generation of 5.5. So, does this mean that the next generation of iPhone products is expected to replace the OLED screen it?

In this regard, DisplaySearch director China market Zhang Bing believes that from a technical trend, OLED currently does not meet apple for high-resolution, good products and the sole supplier of the rate of not more than 70%, whether productivity or cost has not yet reached the apple production needs, a short period of time to become the next apple to replace the LCD generation of screens is unlikely.

But the low temperature polysilicon is easier to achieve. The biggest difference with the traditional amorphous silicon display is that the reaction rate of low temperature polysilicon is faster, and has the advantages of high brightness, high definition, and so on. At present, Toshiba mobile display (TMDisplay) and SHARP have been the 4 generation line and below the capacity by non polysilicon into LTPS, Samsung and LG Display using the 4.5 generation LTPS production line.

In China, shentianma controlling shareholders at the end of last year, also said to be with other company jointly invested 7 billion yuan to set up a item company in Xiamen, the 5.5 generation low-temperature polysilicon construction on the processing of glass substrate 30 thousand (LTPS) production of color filter 60 thousand pieces of CF production line and TFT-LCD months; and commitment to the future will be handed over to the production line listed companies hosting, and timely will be sold to the equity of listed companies.

Shentianma said Chief Engineer Li Shuxin, before LTPS compared with OLED with lower cost and technical advantages are more mature. In addition, the construction of low temperature polysilicon LCD screen production line and the traditional LCD screen production line, there are some devices can be shared, which means that the traditional LCD manufacturers in the production line transformation has some advantages. But the core technology and equipment still need to import from japan.

Li Shuxin believes that as an intelligent terminal screen, low temperature polysilicon and OLED will coexist for a long time, the mature technology, lower cost, and supply security, should occupy the mainstream market; while OLED showed an advantage in effect, but the cost is higher, can meet the demand for high-end part.