The high-end process of domestic RF front-end modules is accelerating, and Huatian Technology's L-PAMiD SiP package helps domestic RF modules break through
Over the past decade or so, the communication capabilities of mobile phones have undergone tremendous changes. On the one hand, the communication standard has changed from a specific design for regions and operators to a "global communication" design, and on the other hand, communication technology has evolved from 2G to 5G. The continuous upgrading of radio frequency devices supporting communication functions such as antennas, switches and low-noise amplifiers (LNAs). With the improvement of mobile phone intelligence, the communication frequency bands, interactive channels that need to be supported increase, and the bandwidth becomes larger. The number and function requirements of RF front-end devices are greatly increased. The RF front-end solutions in mobile phones are increasingly integrated, miniaturized, and modularized. Highly integrated RF front-end modules are the general trend.
Huatian Technology DSMBGA package mass production is coming soon, helping the domestic RF front-end to go further
After the arrival of 5G, mobile terminals need to support more frequency bands. Moreover, 5G defines the ultra-high frequency (UHB) frequency band above 3GHz and below 6GHz, which puts forward higher requirements for the performance of the RF front-end. The number of RF front-end modules in a single mobile phone continues to increase. The single-sided SiP is gradually unable to meet the miniaturization requirements of limited space. DSMBGA (Double Side Molding BGA) double-sided plastic encapsulation BGA SiP process has come to the stage and has gradually become the future development direction of industry technology.
DSMBGA is mainly used in the field of RF front-end modules. After the original single-sided SiP module is made into double-sided, the overall size of the module is reduced by more than 20%, the product thickness is only increased by less than 0.2mm, and multiple frequency bands are integrated. The implementation of a module can better meet the mobile phone's requirements for a smaller module size and more comprehensive performance.
With the steady progress of domestic RF front-end modules towards the highest level of integration, the simultaneous development of advanced packaging technology that can match it in China is also imminent.
Huatian Technology has started the R&D and production of RF PA product packaging technology since 2015, and its customers cover major domestic PA design companies. From the early 2G/3G/4G PA to the 5G PA module packaging in the past two years, it has maintained the leading position and major market share of domestic packaging manufacturers.
In the field of RF front-end modules, as early as 2019, Huatian Technology cooperated with customers to carry out the packaging process research and development and engineering sample trial production of 5G L-PAMiF and L-FEM module sets. For the special material and bump structure of GaAs FC die, which are prone to high risk points of UBM crack and bump crack, Huatian Technology based on the guidance of internal simulation data and accumulated experience in packaging single discrete RF devices for many years, from substrate design, plastic packaging material selection, The continuous and stable printing of ultra-thin stencil small-particle solder paste, chemical washing process matching, and plastic sealing process optimization have made breakthroughs in many technical problems, successfully ensuring the first mass production of 5G L-PAMiF and L-FEM modules in China. At present, more than 100 million pieces have been shipped in total, and no customer complaints about abnormal product quality have occurred. The performance of the customer's products is excellent, comparable to the products of international competitors, and it is also the first to enter the supply chain of mobile phone brands such as Samsung and vivo.
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