Low-temperature glass-ceramic package case and crystal oscillator using the same
A crystal oscillator and low-temperature glass technology, applied in electrical components, impedance networks, etc., can solve the problems of expensive sealing equipment and materials, high production costs, high manufacturing costs, etc., and achieve mature processing technology, simple structure, and weight reduction. Effect
Inactive Publication Date: 2014-06-04
SUZHOU IND PARK YANGCHEN PACKAGING TECH
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Problems solved by technology
[0004] However, since the ceramic board of the traditional surface-mounted quartz crystal oscillator ceramic package shell is made of three layers of ceramic sheets, the production cost of the ceramic substrate has always been high, and the manufacturing cost is expensive. At the same time, the three layers are superimposed and co-fired. The technical requirements are high during production, the output is limited by technology and equipment, and the production efficiency and product yield are reduced, which is far from meeting the growing market demand. In addition, the packaging of devices generally adopts parallel seam welding or precious metal gold-tin alloy welding , the sealing equipment and materials are very expensive, and the production cost is very high
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[0026] combine image 3 and Figure 4 As shown, the packaging shell of the present invention includes ceramic substrates 32, 42 fixed to each other, fusible low-temperature glass rings 35, 45 and cover plates, and inner electrodes 36, 46 and outer electrodes respectively arranged on the inner and outer sides of the ceramic substrates 32, 42. Electrodes 31,41. The ceramic substrates 32, 42 and the low-temperature glass rings 35, 45 form a ceramic base. The internal electrodes 36, 46 and the external electrodes 31, 41 are electrically connected to each other, and the tops of the internal electrodes 36, 46 are provided with silver pastes 37, 47. A quartz crystal 38,48 is fixedly arranged, and described quartz crystal 38,48 is arranged in the closed space that is formed by ceramic substrate 32,42 and cover plate, and ceramic substrate 32,42 and cover plate rely on this low-temperature glass ring 35, 45 combined.
[0027] Specifically as figure 2 As shown, the ceramic substra...
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The invention discloses a low-temperature glass-ceramic package case comprising a ceramic base and a cover plate which are fixed together. The ceramic base at least comprises a ceramic substrate, a low-temperature glass ring which is easy to melt, and an inner electrode and an outer electrode which are arranged inside and outside the ceramic substrate. The inner electrode and the outer electrode are in electrical conduction. The ceramic substrate and the cover plate are combined through the low-temperature glass ring. The low-temperature glass-ceramic package case of the invention has the following main advantages that the low-temperature glass is used as the solder, a single-layer ceramic substrate is used to replace a multilayer ceramic sheet co-firing structure, advantages of small size, light weight, simple structure and mature machining process can be realized, the advantage of high product percent of pass can be ensured, and the low-temperature glass-ceramic package case can be widely applicable to surface-mounted quartz crystal components and other electronic components.
Description
technical field [0001] The invention relates to a packaging shell and a crystal oscillator using the shell. Background technique [0002] Due to the continuous development of mobile phones, still digital cameras, PC motherboards, notebook computers, and video games, the demand for crystal oscillators is expected to increase significantly. [0003] like figure 1 As shown, a traditional crystal oscillator includes at least two layers of ceramic substrates 1, 3, and a cover 9 fixed to the ceramic substrates. An internal electrode 8 is provided above the inner ceramic substrate 3, and an external electrode is provided below the outer ceramic substrate 1. 2. The internal electrode 8 and the external electrode 2 are connected to each other. A quartz crystal 11 is fixed above the internal electrode 8 through an adhesive layer 10 , and the quartz crystal 11 is arranged in a closed space formed by the ceramic substrate 3 and the cover 9 . In order to increase the enclosed space, a...
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IPC IPC(8): H03H9/10H03H9/02H03H9/19
Inventor 陈炳龙黄大河
Owner SUZHOU IND PARK YANGCHEN PACKAGING TECH