CN201766560U

CN201766560U - Novel quartz crystal resonator

Info

Publication number: CN201766560U
Application number: CN2010205214466U
Authority: CN
Inventors: 刘青彦; 梁羽杉; 郭家炯
Original assignee: Chengdu Benyue Technology Co Ltd
Current assignee: Chengdu Kingbri Frequency Technology Co.,Ltd.
Priority date: 2010-09-08
Filing date: 2010-09-08
Publication date: 2011-03-16
Anticipated expiration: 2020-09-08

Abstract

A novel quartz crystal resonator includes a quartz wafer, a packaging housing, two pins, and a base, the quartz wafer is of an oval shape or a long circular shape, the long circular shape is formed by connecting two symmetrical arcs that are not more than a half circle through parallel connecting lines with a certain distance, the quartz wafer is arranged on two reeds in a vertical manner: two electrodes of the quartz wafer are respectively fixed on a mounting surface of one of the reeds through conductive glue. Compared with 49U and 49T with identical technical parameters, cost is reduced by 50%, production efficiency is improved by 40%; the resonator is domestically produced whole. Products of the resonator can be widely used for audio-visual equipment, e.g. television set, DVD, and minisize memory such as U-disk, MP3, and Bluetooth earphone.

Description

A kind of novel quartz-crystal resonator

Technical field

The utility model relates to electronic devices and components, and especially modified model 49U, 49T series quartz-crystal resonator is made the field.

Background technology

Quartz-crystal resonator is the piezoelectric device made from piezoelectric quartz (promptly quartzy), and it not only has high stability physical and chemical performance, and the elastic vibration loss is minimum.Compare with other electronic devices and components, piezoelectric quartz crystal also has very high frequency stability and high Q value, the important components and parts that make it become stabilized frequency and select frequency.Along with the extensive use of digitizer, market is also more and more higher to chip type, miniaturization, high frequency stability and some specific (special) requirements of crystal element and device.In quartz-crystal resonator 49U, 49T series for example its encapsulation specification diameter of 49U, 49T many 8.7,8.5,8.0,6.5mm, in the frequency range 1MHz-200MHz.Requiring under above-mentioned operating frequency range and the specification, AT cut type 49U, 49T quartz wafer generally are vertically mounted on the base seat support so that the disk form is vertical, and the raw material of the wafer that this type quartz-crystal resonator is spent are many and working (machining) efficiency is low.

The utility model content

The purpose of this utility model provides a kind of novel quartz-crystal resonator, is intended to satisfy the operation frequency performance index of quartz-crystal resonator needs, can reduce production costs again.

This novel purpose is achieved in that a kind of novel quartz-crystal resonator, comprise quartz wafer, package casing, two pins, pedestal, quartz wafer is oval, it perhaps is Long Circle, two symmetrical arcs formed shape behind parallel line of semicircle is served as reasons mutually across a certain distance, is not more than to this Long Circle, and quartz wafer is arranged on two reeds by vertical vertical mode: two electrodes on the quartz wafer are fixed on the installed surface of a corresponding reed in two reeds through conducting resinl respectively.

Above-mentioned two pins are fixed on the pedestal, and two pins stretch into pedestal the inner respectively with two reeds in a corresponding reed connect.

The length of the parallel line in the above-mentioned Long Circle quartz crystal shape and the diameter of symmetrical arc are respectively 5.0mm and 8.7mm, or 3.0mm and 8.5mm, or 2.5mm and 8.0mm, or 2.0mm and 6.5mm.

Compared with prior art, this novel beneficial effect is:

Low at the production efficiency that exists in above-mentioned AT cut type quartz-crystal resonator 49U, the 49T series, the problem that the wafer raw materials consumption is excessive is improved it.

After the improvement, this novel product technical parameter index is as follows:

Nominal frequency: 1MHz～100MHz;

Adjust frequency difference: 5ppm～50ppm;

Resonant resistance:＜100 Ω;

Temperature frequency difference: 5ppm;

Load capacitance: 8PF---45PF;

Ageing rate: 5ppm/year.

The correlation of this novel product job stability and temperature range sees the following form:

Temp.(.℃)ppm	A：±5B：±10C：±20D：±25
		-10to+60	○○○○
-20to+70	×○○○
		-40to+85	××○○

Annotate: zero expression is feasible, and * expression is infeasible.

A, B, C, D correspond respectively to this novel product (corresponding to the product of four kinds of Long Circle specifications) after the improvement of 49U, 49T type quartz-crystal resonator diameter 8.7,8.5,8.0 and 6.5mm.

49U, 49T type by above technological improvement and constructed parameter compare, and this novel cost has reduced by 50%, and production efficiency improves 40%; The round Realization production domesticization.

The product of the alternative 49U of this novel product, 49T series specification, be widely used in audio-visual equipment such as TV, DVD, and equipment such as micro memory such as USB flash disk, MP3, bluetooth earphone in.

Description of drawings

Fig. 1 is this novel structural representation.

Embodiment

In conjunction with the accompanying drawings the utility model is specified.

As can be seen from Figure 1, this new micro quartz-crystal resonator mainly is made up of package casing 1, pedestal 2, two

pins

5,5a, two reeds 6,6a and quartz wafers 3 etc.Quartz wafer is arranged in package casing, the opening portion of package casing links to each other with pedestal is airtight, pin links to each other with pedestal, quartz wafer is installed on the installed surface of reed by vertical vertical mode, quartz wafer 3 is oval, it perhaps is Long Circle, this Long Circle is served as reasons and is separated by-determining deviation, be not more than (or four of two symmetrical arcs of semicircle, or six, or eight symmetrical circular arcs) formed shape behind parallel line, quartz wafer 3 is arranged on two reeds 6 by vertical vertical mode, on the 6a: two electrodes 4 on the quartz wafer 3,4a is fixed on the installed surface of a corresponding reed in two reeds through conducting resinl respectively.Two

pins

5,5a are fixed on the pedestal 2, and two pins stretch into pedestal the inner respectively with two reeds in a corresponding reed connect.

Reed is set to vertical structure and is connected with the pin that passes pedestal and fixes on it, and the electrode on the quartz wafer is fixed on the installed surface of reed by conducting resinl.

The dimensions that has among the utility model embodiment (unit, mm, down together):

The length of the parallel line in Long Circle quartz crystal (49U, the 49T type quartz-crystal resonator) shape and the diameter of symmetrical arc are respectively 5.0mm and 8.7mm, or 3.0mm and 8.5mm, or 2.5mm and 8.0mm, or 2.0mm and 6.5mm.

Provide the making flow process of quartz wafer and the manufacture craft flow process of quartz crystal below:

1, prepare the cutting of crystal bar and wafer, according to minicrystal resonator behavior index request with quartzy crystal bar by the AT cut type side of being cut into sheet.

2, quartz square chip is cut into the silver of required specification, and then change circle

3, the oval wafer of quartz crystal is carried out wafer grinding processing on the rock grinding machine, be ground to the frequency of arts demand.

4, classify by the wafer frequency and carry out edge treated with the edge knurling machine rolling then.

5, by carrying out chemical corrosion after the frequency categorization.

6, the wafer that will corrode cleans silver-plated then one-tenth electrode.

7, will plate the horizontally mounted desk-top reed of bar shaped crystal of silver electrode, solidify with continuous tunnel furnace the fixing back of some conducting resinl.

8, carry out frequency trim accurately to reach desired frequency range with frequency modulation machine;

9, the finished product parameter characteristic is checked;

10, shell press seal and lettering,

11, airtight leak detection, high temperature ageing, final product is inspection and finished product packing eventually.

Claims

1. novel quartz-crystal resonator, comprise, quartz wafer (3), package casing (1), two pins (5,5a), pedestal (2), it is characterized in that: described quartz wafer (3) is for oval, it perhaps is Long Circle, two symmetrical arcs formed shape behind parallel line of semicircle is served as reasons mutually across a certain distance, is not more than to this Long Circle, and quartz wafer (3) is arranged on two reeds (6,6a) by vertical vertical mode: two electrodes on the quartz wafer (3) (4,4a) are fixed on the installed surface of a corresponding reed in two reeds through conducting resinl respectively.

2. according to the described a kind of novel quartz-crystal resonator of claim 1, it is characterized in that: described two pins (5,5a) are fixed on the pedestal (2), and two pins stretch into pedestal the inner respectively with two reeds in a corresponding reed connect.

3. according to the described a kind of novel quartz-crystal resonator of claim 2, it is characterized in that: the length of the parallel line in the described Long Circle quartz crystal shape and the diameter of symmetrical arc are respectively 5.0mm and 8.7mm, or 3.0mm and 8.5mm, or 2.5mm and 8.0mm, or 2.0mm and 6.5mm.