Although fierce competition has prompted some international manufacturers to withdraw from the mobile phone chip market, Chinese companies have still achieved good results. The most obvious feature of the mobile phone chip market is that the update speed is fast and new technology trends are emerging. Under this circumstance, Chinese chip companies can only achieve new and faster developments by grasping the market dynamics and keeping up with the changes.
“Seamless†access is a long-term challenge
In the 4G era, multi-frequency multi-mode is still the focus, and even the integration of multi-mode multi-frequency baseband chips has become a "passport" for enterprises to enter. The most fundamental reason why LTE chips need to support multi-mode is that LTE deployment cannot cover all places at once. The network layout must be phased, and 2G or 3G voice services should be provided for consumers. In addition, 3G itself also has international roaming. The need to support different models.
In this regard, Baoshan Quan, senior director of product marketing of Qualcomm, pointed out: "We believe that multi-frequency multi-mode is still the top priority of the 4G era, more and more convenient and seamless access experience, faster and faster access speed Wait, it is the mainstream trend of the mobile phone baseband market in the future."
In terms of seamless access, Bao Shanquan believes that “LTE as a global standard will help to build a globally unified industry chain. China's LTE TDD/FDD hybrid networking test scope is also expanding, creating for manufacturers. Supports LTE TDD/FDD 5-mode 10-band, 5-mode 13-band, and even 6-mode multi-frequency terminals to provide convenience."
Li Yue, president of China Mobile, said: "Our focus is on 5-mode 10-band, 5-mode 12-band terminals. Only such terminals can cover all LTE networks worldwide."
In response to this trend, Chinese companies have also done a lot of work. HiSilicon has launched LTE terminal chips supporting 5 modules, and multi-mode chips such as Spreadtrum, Lianxin and MediaTek have also reached commercialization level. Liu Jitang, vice president of Lianxin Technology, believes: "Chinese chip makers will rise rapidly, especially in the 4G low-end market, which will be ahead of European and American chip makers. At the same time, China's TD-LTE chip companies should also take advantage of the trend of communication globalization. 'China Core' globalization."
However, the industry still has doubts about whether it must adhere to the 5 model. After all, 4G smartphones will break out in the low-end market in the next two years. Domestic chip manufacturers are an important force driving the smartphone market below 1500 yuan.
MARVELL Marketing Director Zhang Lu pointed out that in the terminal strategy, 5 mode 13 frequency can be used as a high-end product, but 3 mode, 4 mode mobile phone can be used as a popular product, because a large number of users pay more attention to cost, not all users So much attention to "seamless" roaming access. MediaTek also said in an interview with reporters that in the terminal market, low-end mobile phones are sufficient, and mid-to-high-end mobile phones are pursuing full-model. Whether it is 3 mode / 4 mode, or 5 mode / 6 mode, will coexist for a long time, to meet the needs of different markets.
TFT (Thin Film Transistor) is a thin film field effect transistor. The so-called thin film transistor means that each liquid crystal pixel on the Liquid Crystal Display is driven by a thin film transistor integrated behind it. This can Display Screen information at high speed, high brightness, and high contrast. TFT is an active matrix liquid crystal display.
The TFT-LCD liquid crystal display is a thin film transistor type liquid crystal display, also known as "true color" (TFT). TFT liquid crystal has a semiconductor switch for each pixel, and each pixel can be directly controlled by dot pulses, so each node is relatively independent and can be continuously controlled, which not only improves the response speed of the display, but also can be accurately controlled Display color gradation, so the color of TFT liquid crystal is more real.
In the fierce competition among many flat panel displays, why TFT-LCD can stand out and become the next-generation mainstream display is by no means accidental, it is the inevitable development of human technology and thinking mode. The liquid crystal has avoided the difficult light-emitting problem successively, and the light-emitting display device is decomposed into two parts by using the excellent characteristics of the liquid crystal as a light valve, namely the light source and the control of the light source. As a light source, brilliant results have been achieved in terms of luminous efficiency, full color, and life, and they are still being deepened. Since the invention of LCD, the backlight has been continuously improved, from monochrome to color, from thick to thin, from side fluorescent lamp type to flat fluorescent lamp type. The latest achievements in luminous light sources will provide new backlight sources for LCDs. With the advancement of light source technology, newer and better light sources will appear and be applied to LCDs. The rest is the control of the light source, the technology and process of the semiconductor large-scale integrated circuit are transplanted, the thin film transistor (TFT) production process has been successfully developed, the matrix addressing control of the liquid crystal light valve is realized, and the light of the liquid crystal display is solved. The cooperation of the valve and the controller enables the advantages of the liquid crystal display to be realized.
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ESEN Optoelectronics Technology Co., Ltd, , https://www.esenlcd.com