1 LTCC简介
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ã€€ã€€æœªæ¥æ‰‹æœºæ£æœç€è½»åž‹åŒ–ã€å¤šåŠŸèƒ½ã€æ•°å—化åŠé«˜å¯é 性ã€é«˜æ€§èƒ½çš„æ–¹å‘å‘展,对元器件的å°åž‹åŒ–ã€é›†æˆåŒ–以至模å—åŒ–è¦æ±‚æ„ˆæ¥æ„ˆè¿«åˆ‡ã€‚低温共烧陶瓷技术(Low Temperature Co-fired Ceramic,LTCC)是近年æ¥å…´èµ·çš„一ç§ä»¤äººçž©ç›®çš„多å¦ç§‘交å‰çš„æ•´åˆç»„件技术,它在推动手机体积和功能上的å˜åŒ–ä¸éƒ½èµ·åˆ°äº†å·¨å¤§çš„ä½œç”¨ï¼Œæ£æ˜¯å®žçŽ°æœªæ¥æ‰‹æœºå‘å±•ç›®æ ‡çš„æœ‰åŠ›æ‰‹æ®µã€‚è¿™é¡¹æŠ€æœ¯æœ€å…ˆç”±ç¾Žå›½çš„ä¼‘æ–¯å…¬å¸äºŽ1982å¹´ç ”åˆ¶æˆåŠŸï¼Œå…¶å…·ä½“çš„å·¥è‰ºæµç¨‹å°±æ˜¯å°†ä½Žæ¸©çƒ§ç»“陶瓷粉制æˆåŽšåº¦ç²¾ç¡®è€Œä¸”è‡´å¯†çš„ç”Ÿç“·å¸¦ï¼Œä½œä¸ºç”µè·¯åŸºæ¿ææ–™ï¼Œåœ¨ç”Ÿç“·å¸¦ä¸Šåˆ©ç”¨æ¿€å…‰æ‰“å”ã€å¾®å”注浆ã€ç²¾å¯†å¯¼ä½“浆料å°åˆ·ç‰å·¥è‰ºåˆ¶å‡ºæ‰€éœ€è¦çš„ç”µè·¯å›¾å½¢ï¼Œå¹¶å°†å¤šä¸ªæ— æºå…ƒä»¶(如电容ã€ç”µé˜»ã€æ»¤æ³¢å™¨ã€é˜»æŠ—转æ¢å™¨ã€è€¦åˆå™¨ç‰)埋入其ä¸ï¼Œç„¶åŽå 压在一起,在900℃烧结,制æˆä¸‰ç»´ç”µè·¯ç½‘ç»œçš„æ— æºé›†æˆç»„件,也å¯åˆ¶æˆå†…ç½®æ— æºå…ƒä»¶çš„三维电路基æ¿ï¼Œåœ¨å…¶è¡¨é¢å¯ä»¥è´´è£…IC和有æºå™¨ä»¶ï¼Œåˆ¶æˆæ— æº/有æºé›†æˆçš„功能模å—。
  

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  图1 LTCCåœ¨æ‰‹æœºæ”¶å‘æ¨¡å—ä¸çš„应用
  看到上é¢å¦‚æ¤ç¹æ‚和专业的解释,也许很多人已ç»å¼€å§‹çŠ¯æ™•ï¼Œå…¶å®žä»Žå—é¢ä¸Šæ¥çœ‹ï¼Œâ€œä½Žæ¸©å…±çƒ§é™¶ç“·â€å·²ç»å‘Šè¯‰äº†å¤§å®¶å…¶åŸºæœ¬çš„å«ä¹‰ï¼Œé¦–å…ˆï¼Œå®ƒæ˜¯ç”±é™¶ç“·ææ–™åšæˆçš„;其次,所谓的“低温共烧â€ï¼Œå°±æ˜¯åœ¨ç›¸å¯¹è¾ƒä½Žçš„烧结温度下(1000℃以下),将多层ä¸åŒåŠŸèƒ½çš„ç”Ÿé™¶ç‰‡å 在一起烧制,最终得到需è¦çš„元器件。曾有人åšäº†ä¸€ä¸ªå½¢è±¡çš„æ¯”喻,将低温共烧陶瓷制æˆçš„å…ƒå™¨ä»¶æ¯”ä½œä¸€æ ‹å¤§åŽ¦ï¼Œæ¯ä¸€å±‚有ç€ä¸åŒçš„åŠŸèƒ½ï¼Œä½†å®ƒä»¬åˆæ˜¯ä¸€ä¸ªæ•´ä½“。
  LTCC 在手机ä¸çš„用é‡çº¦è¾¾80%以上,手机ä¸ä½¿ç”¨çš„LTCC产å“包括LC滤波器ã€åŒå·¥å™¨ã€åŠŸèƒ½æ¨¡å—ã€æ”¶å‘开关功能模å—。平常è€ç™¾å§“接触到最多的就是手机ã€ç”µè¯ã€æ— 绳电è¯ï¼ŒçŽ°åœ¨ç”¨å¾—æœ€å¤šçš„æ˜¯è“牙耳机里é¢çš„天线。åªè¦ä½“积å°çš„ï¼Œæ— çº¿æŽ¥æ”¶çš„è®¾å¤‡è‚¯å®šè¦ç”¨åˆ°æ»¤æ³¢å™¨ã€å¤©çº¿ï¼Œè¿™äº›éƒ½ç¦»ä¸å¼€LTCC。LTCC器件的体积很å°ï¼Œæœ€å°çš„åªæœ‰1mm×0.5mm,放在手ä¸ï¼Œæ‰“个喷åšå¯èƒ½å°±ä¸è§äº†ã€‚
  

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  图2 LTCC电å元器件
2 LTCC的优势
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ã€€ã€€ä¸Žå…¶å®ƒé›†æˆæŠ€æœ¯ç›¸æ¯”ï¼ŒLTCC有ç€ä¼—多优点:
ã€€ã€€ç¬¬ä¸€ï¼Œé™¶ç“·ææ–™å…·æœ‰ä¼˜è‰¯çš„高频ã€é«˜é€Ÿä¼ 输以åŠå®½é€šå¸¦çš„ç‰¹æ€§ã€‚æ ¹æ®é…料的ä¸åŒï¼ŒLTCCææ–™çš„介电常数å¯ä»¥åœ¨å¾ˆå¤§èŒƒå›´å†…å˜åŠ¨ï¼Œé…åˆä½¿ç”¨é«˜ç”µå¯¼çŽ‡çš„é‡‘å±žææ–™ä½œä¸ºå¯¼ä½“ææ–™ï¼Œæœ‰åˆ©äºŽæé«˜ç”µè·¯ç³»ç»Ÿçš„å“è´¨å› æ•°ï¼Œå¢žåŠ äº†ç”µè·¯è®¾è®¡çš„çµæ´»æ€§;
  第二,å¯ä»¥é€‚应大电æµåŠè€é«˜æ¸©ç‰¹æ€§è¦æ±‚,并具备比普通PCBç”µè·¯åŸºæ¿æ›´ä¼˜è‰¯çš„çƒä¼ 导性,æžå¤§åœ°ä¼˜åŒ–了电å设备的散çƒè®¾è®¡ï¼Œå¯é 性高,å¯åº”用于æ¶åŠ£çŽ¯å¢ƒï¼Œå»¶é•¿äº†å…¶ä½¿ç”¨å¯¿å‘½;
  第三,å¯ä»¥åˆ¶ä½œå±‚数很高的电路基æ¿ï¼Œå¹¶å¯å°†å¤šä¸ªæ— æºå…ƒä»¶åŸ‹å…¥å…¶ä¸ï¼Œå…除了å°è£…ç»„ä»¶çš„æˆæœ¬ï¼Œåœ¨å±‚数很高的三维电路基æ¿ä¸Šï¼Œå®žçŽ°æ— æºå’Œæœ‰æºçš„集æˆï¼Œæœ‰åˆ©äºŽæé«˜ç”µè·¯çš„组装密度,进一æ¥å‡å°ä½“积和é‡é‡;
  第四,与其他多层布线技术具有良好的兼容性,例如将LTCC与薄膜布线技术结åˆå¯å®žçŽ°æ›´é«˜ç»„è£…å¯†åº¦å’Œæ›´å¥½æ€§èƒ½çš„æ··åˆå¤šå±‚基æ¿å’Œæ··åˆåž‹å¤šèŠ¯ç‰‡ç»„ä»¶;
  第五,éžè¿žç»å¼çš„生产工艺,便于æˆå“制æˆå‰å¯¹æ¯ä¸€å±‚布线和互连通å”è¿›è¡Œè´¨é‡æ£€æŸ¥ï¼Œæœ‰åˆ©äºŽæé«˜å¤šå±‚基æ¿çš„æˆå“率和质é‡ï¼Œç¼©çŸç”Ÿäº§å‘¨æœŸï¼Œé™ä½Žæˆæœ¬ã€‚
  第å…,节能ã€èŠ‚æã€ç»¿è‰²ã€çޝä¿å·²ç»æˆä¸ºå…ƒä»¶è¡Œä¸šå‘展势ä¸å¯æŒ¡çš„æ½®æµï¼ŒLTCCä¹Ÿæ£æ˜¯è¿Žåˆäº†è¿™ä¸€å‘展需求,最大程度上é™ä½Žäº†åŽŸæ–™ï¼ŒåºŸæ–™å’Œç”Ÿäº§è¿‡ç¨‹ä¸å¸¦æ¥çš„环境污染。
  3 LTCCçš„åº”ç”¨å‰æ™¯
  除了在手机ä¸çš„应用,LTCC以其优异的电åã€æœºæ¢°ã€çƒåŠ›ç‰¹æ€§å·²æˆä¸ºæœªæ¥ç”µå元件集æˆåŒ–ã€æ¨¡ç»„化的首选方å¼ï¼Œåœ¨å†›äº‹ã€èˆªç©ºèˆªå¤©ã€æ±½è½¦ã€è®¡ç®—机和医疗ç‰é¢†åŸŸï¼ŒLTCCå¯èŽ·å¾—æ›´å¹¿æ³›çš„åº”ç”¨ã€‚å°½ç®¡ç›®å‰çš„LTCC厂商大部分为外资ä¼ä¸šï¼ŒåŒ…括日本的æ‘ç”°(Murata)ã€äº¬ç“·(Kyocera)ã€TDK和太阳诱电(Taiyo Yuden)ã€ç¾Žå›½è¥¿è¿ªæ–¯(CTS Corp)和欧洲的罗伯特?åšä¸–有é™å…¬å¸(Bosch)ã€è¥¿éº¦å…‹å¾®ç”µå技术(C-MAC MicroTechnology)å’ŒScrep-Erulecç‰ï¼Œä½†æ˜¯ï¼Œå°±æˆ‘国LTCC的技术å‘展状况æ¥çœ‹å¹¶éžæ²¡æœ‰ç«žäº‰ä¹‹åœ°ï¼Œå›½åŠ¡é™¢åœ¨2009å¹´å‘布的《电åä¿¡æ¯äº§ä¸šè°ƒæ•´æŒ¯å…´è§„划纲è¦ã€‹çš„æ–‡ä»¶å†…容ä¸ï¼Œæ˜Žç¡®æå‡ºå°†å¤§åŠ›æ”¯æŒç”µåå…ƒå™¨ä»¶çš„è‡ªä¸»ç ”å‘,并将其设为é‡ç‚¹ç ”究领域,低温共烧陶瓷技术将æˆä¸ºæœªæ¥è‹¥å¹²å¹´å†…ä¸å›½ç”µååˆ¶é€ ä¸šçš„é‡å¤§å‘展趋势。国内部分厂商已开始安装先进的LTCCè®¾å¤‡ï¼Œå¹¶é‡‡ç”¨è‡ªä¸»ç ”å‘å‡ºçš„æ–°åž‹åŽŸæ–™ï¼ŒåŠ å¿«æˆå“çš„åˆ¶é€ ç”Ÿäº§ï¼Œè¿™å…¶ä¸ä¸ä¹åƒæµ™æ±Ÿæ£åŽŸç”µæ°”è‚¡ä»½æœ‰é™å…¬å¸ã€æ·±åœ³å—å¡ç”µå有é™å…¬å¸ç‰å·²ç»å¼€å‘出一系列具有国际先进水平的LTCC相关产å“的公å¸ã€‚ç”±æ¤ï¼Œæˆ‘们相信,LTCC技术必将在ä¸å›½çš„电å元器件产业带æ¥é©å‘½æ€§çš„å½±å“。
These keywords represent critical components and applications within the electrical and industrial sector. Here's how they can be classified:
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Frequency Converter: A frequency converter is a device that converts the frequency of an alternating current (AC) to match the requirement of a particular electrical device or system. This allows equipment designed for specific frequency to operate in regions where the electrical supply has a different frequency. For example, a frequency converter can be used to allow a device designed for a 60Hz supply to operate in a region with a 50Hz supply.
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Variable Frequency Drive (VFD): A VFD is a type of motor controller that drives an electric motor by varying the frequency and voltage of its power supply. VFDs have significant applications in industrial systems and machinery, where they allow for precise control of motor speed and torque, leading to increased efficiency and longevity of equipment.
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Pumps, Fans, Conveyors: These are common applications of motors controlled by VFDs. The variable speed provided by the VFD allows these systems to operate more efficiently and adjust to the specific demands of their task. For instance, a pump's flow can be controlled more accurately, fans can be speed adjusted according to the cooling requirement, and conveyor speed can be precisely managed based on the production line's needs.
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Phase Motor: A phase motor refers to the type of electric motor, which operates based on the phase of the power supply. The most common types are single-phase motors and three-phase motors. Single-phase motors are usually found in lower power applications like household appliances, while three-phase motors are used in higher power applications, often in industrial settings. These motors can be controlled using VFDs for enhanced performance and efficiency.
These components play significant roles in various industries and are essential for efficient operation in many modern systems. The use of VFDs and phase motors, in particular, has revolutionized the way we control and optimize industrial processes, leading to substantial improvements in energy efficiency and system longevity.
Frequency Converter,Variable Frequency Drive,Pumps Fans Conveyors,Phase Motor
WuXi Spread Electrical Co.,LTD , https://www.vfdspread.com