Lead-free low-temperature diode glass bulb
A diode and glass bulb technology, applied in the field of material component configuration, can solve problems such as environmental pollution and human health hazards
Inactive Publication Date: 2006-10-25
华嘉荣 +1
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Problems solved by technology
However, lead oxide will bring environmental pollution, especially harmful to human health, and now it is even proposed to ban the use of lead oxide
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[0017] According to the above-mentioned chemical composition configuration, and according to the specified sealing temperature requirements, according to the conventional glass production process, the lead-free low-temperature diode glass bulb can be made.
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The invention provides a chemical formula for a lead-free, low- temperature diode glass shell, comprising: silicon dioxide SiO2 46 plus or minus 1%; diboron trioxide B2O5 19.5 plus or minus 1%; sodium oxide Na2O 8.5 plus or minus 0.3%; potassium oxide K2O 5 plus or minus 0.3%; titanium oxide TiO2 3.7 plus or minus 0.5%; lithium oxide Li2O 3.8 plus or minus 0.3%; baryta BaO 1.85 plus or minus 0.2%; alumina Al2O3 1.6 plus or minus 0.5%; calcium oxide CaO 0.95 plus or minus 0.1%; diantimony trioxide Sb2O3 <=0.3%; zinc oxide ZnO 8.8 plus or minus 0.3%; and its sealing temperature is 630-660 deg.C and its expansion coefficient is in the 87-91*10-7 / deg.C range, thus completely meeting the diode packaging process requirements and industrial production requirements, thus reducing the production cost.
Description
technical field [0001] The invention relates to a material composition configuration of a semiconductor diode glass bulb. Background technique [0002] Glass bulbs used for packaging electronic components such as diodes are currently made of low-temperature glass containing 58-61% lead oxide as the main chemical component in the world; due to the special needs of the technology and technology of electronic components such as packaging diodes, The glass bulb of the outer shell must have a sealing temperature of 625-650°C and an expansion coefficient of 87-91×10 -7 / °C low-temperature glass, in order to meet the above two conditions, lead oxide is used in the traditional glass production process and chemical composition. However, lead oxide will bring environmental pollution, especially harmful to human health, and now it is even proposed to ban the use of lead oxide. Contents of the invention [0003] In order to solve the problem that there is no lead oxide in the glass ...
Claims
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IPC IPC(8): C03C3/093
CPCC03C3/093
Inventor 华嘉荣张介林
Owner 华嘉荣