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CN-224233662-U - Whole plate structure of SMD quartz crystal resonator

CN224233662UCN 224233662 UCN224233662 UCN 224233662UCN-224233662-U

Abstract

The utility model relates to an SMD quartz crystal resonator integral plate structure, which comprises a ceramic integral plate, wherein the ceramic integral plate comprises a plurality of quartz crystal bases which are arranged in a matrix, the back surface of each quartz crystal base is provided with an electrode, the front surface of each quartz crystal base is provided with an annular metallized coating, the front surface of each quartz crystal base is provided with a dispensing platform, the dispensing platform is provided with a quartz wafer, the dispensing platform comprises a dispensing platform A and a dispensing platform B, the front surface of each quartz crystal base is provided with a metal upper cover, the metal upper covers are connected with the quartz crystal bases in a welding way, and a containing cavity is arranged in each metal upper cover. Compared with the structure that the double-layer ceramic is adopted to form the containing cavity at present, on the premise of basically ensuring the production efficiency, the metallized coating is printed on the single-layer ceramic substrate, thereby improving the yield and directly reducing the material cost.

Inventors

  • LI BIN
  • HUANG YI

Assignees

  • 烟台明德亨电子科技有限公司

Dates

Publication Date
20260512
Application Date
20250425

Claims (8)

  1. 1. The SMD quartz crystal resonator integral plate structure is characterized by comprising a ceramic integral plate (100), wherein the ceramic integral plate (100) comprises a plurality of quartz crystal bases which are arranged in a matrix, the back of each quartz crystal base is provided with an electrode, the front of each quartz crystal base is provided with an annular metallized coating (14), the front of each quartz crystal base is provided with a dispensing platform, the dispensing platform is provided with a quartz wafer (17), the dispensing platform comprises a dispensing platform A (12) and a dispensing platform B (13), the front of each quartz crystal base is provided with a metal upper cover (200), the metal upper covers (200) are connected with the quartz crystal bases in a welded mode, and a containing cavity is formed in each metal upper cover (200).
  2. 2. The SMD quartz crystal resonator whole plate structure according to claim 1, characterized in that said metal upper cover (200) comprises a top cover (201) with a raised middle part and a side wall (202) bent downwards, said side wall (202) edge being provided with an outward bending part (203), said bending part (203) being laser welded with said annular metallization coating (14).
  3. 3. The SMD quartz crystal resonator whole plate structure according to claim 1, characterized in that said quartz crystal base is further provided with a support platform (11) for supporting said quartz wafer (17).
  4. 4. The SMD quartz crystal resonator whole plate structure according to claim 1, characterized in that the back surface of said quartz crystal base is provided with four electrodes, said dispensing platform a (12) and dispensing platform B (13) are electrically connected with two electrodes respectively, said annular metallization coating (14) is electrically connected with the remaining electrodes.
  5. 5. The SMD quartz crystal resonator whole plate structure according to claim 4, wherein the quartz crystal base is provided with a metallized through hole, the metallized through hole comprises a first through hole (1), a second through hole (2), a third through hole (3) and a fourth through hole (4), the four electrodes are respectively a first electrode (5), a second electrode (6), a third electrode (7) and a fourth electrode (8), and the annular metallized coating (14) is respectively connected with the diagonally arranged second electrode (6) and fourth electrode (8) in a conducting way through the second through hole (2) and the fourth through hole (4); The dispensing platform A (12) and the dispensing platform B (13) are respectively connected with the diagonally arranged third electrode (7) and the diagonally arranged first electrode (5) through the third through hole (3) and the first through hole (1) in a conducting way.
  6. 6. The SMD quartz crystal resonator whole plate structure according to any of the claims 1-5, characterized in that through holes (16) are provided at the junction of adjacent four quartz crystal bases, a split plate line (10) is provided on the front surface of said ceramic whole plate (100), said split plate line (10) is arranged in a matrix and passes through the center of said through holes (16).
  7. 7. The whole structure of the SMD quartz crystal resonator according to claim 6, wherein the through holes (16) are metallized holes, adjacent electrodes on the back surfaces of adjacent quartz crystal bases are connected in a conducting manner through metal wires (9) and the through holes (16), the back surfaces of the ceramic whole plates (100) are provided with split plate wires (10) corresponding to the front split plate wires (10), and the split plate wires (10) are arranged in a matrix and penetrate through the circle centers of the through holes (16).
  8. 8. The SMD quartz crystal resonator plate structure according to claim 5, characterized in that said glue dispensing platform a (12) is connected to said third through hole (3) by means of metal printed wires (15).

Description

Whole plate structure of SMD quartz crystal resonator Technical Field The utility model relates to an integral plate structure of an SMD quartz crystal resonator, and belongs to the technical field of resonator structures. Background SMD quartz crystal resonators are commonly used electronic devices, and their use is increasing with the development of digitization technology. However, the SMD quartz crystal resonator has technical difficulties in improving the processing efficiency and the processing quality both in terms of the device structure and the processing technology. The SMD quartz crystal resonator has two base structures, namely a metal packaging structure, namely a multi-layer ceramic plate is provided with a metal ring made of a kovar material by sintering and then is welded with a cover plate in parallel, wherein the defect is high in price, and a glass cement packaging structure, namely a single-layer ceramic plate and a metal shell or a ceramic metal upper cover are sealed by glass cement, and the defect is that the glass cement has trace gas volatilization to influence the aging rate of products. The traditional single resonator processing steps comprise 1, completing the processing of a ceramic whole plate according to a quartz crystal resonator ceramic substrate production process, then dividing and selecting to form a single SMD quartz crystal resonator ceramic base, 2, fixing a wafer in the base through cleaning, coating and dispensing to form a single SMD quartz crystal resonator component, and 3, processing a single metal sheet, covering the resonator component and sealing to form the single SMD quartz crystal resonator. Because the traditional SMD quartz crystal resonator is manufactured singly, the production efficiency is extremely low, the utility model has the patent application number 201510746226, the utility model discloses a novel SMD quartz crystal resonator and a processing method for using a ceramic whole plate as a substrate in the whole plate packaging process, the problem of low production efficiency is solved, a plurality of quartz crystal bases arranged in a matrix are arranged on the ceramic whole plate, quartz crystal resonant pieces are arranged on each base, then the quartz crystal resonant pieces are subjected to laser seal welding with a whole plate cover plate to form a whole plate quartz crystal resonator, and finally, a single resonator is formed by whole plate splinters. The method improves the production efficiency, but the containing cavity for containing the quartz crystal is processed on the ceramic or is processed by two layers of ceramic plates, and the ceramic also needs to be baked and molded, so that the processing technology is complex, the rejection rate is high, and the overall manufacturing cost is relatively high. Disclosure of utility model The utility model provides an integral plate structure of an SMD quartz crystal resonator, which aims at overcoming the defects in the prior art and utilizes a metal upper cover to form a containing cavity so as to avoid processing ceramics. The technical scheme includes that the SMD quartz crystal resonator integral plate structure comprises a ceramic integral plate, wherein the ceramic integral plate comprises a plurality of quartz crystal bases which are arranged in a matrix, the back surface of each quartz crystal base is provided with an electrode, the front surface of each quartz crystal base is provided with an annular metallized coating, the front surface of each quartz crystal base is provided with a dispensing platform, the dispensing platform is provided with a quartz wafer, the dispensing platform comprises a dispensing platform A and a dispensing platform B, the front surface of each quartz crystal base is provided with a metal upper cover, the metal upper covers are connected with the quartz crystal bases in a welded mode, and a containing cavity is formed in each metal upper cover. The utility model has the advantages that firstly, the metallized coating is printed on the single-layer ceramic substrate to form the ceramic whole plate structure, the ceramic whole plate is directly adopted for transmission in the production process, the single transfer on a tool is not needed, the occupied space is small, the production efficiency is higher, secondly, the metal upper cover is utilized, the processing of the containing cavity on the ceramic whole plate is not needed, or the containing cavity is formed by adopting the two-layer ceramic plate structure, and the metal upper cover is convenient to process, so that the yield is improved. The material cost is directly reduced, and the requirements of low cost and miniaturization of the quartz crystal resonator are met. Further, the metal upper cover comprises a top cover with a raised middle part and a side wall which is bent downwards, an outward bending part is arranged at the edge of the side wall, and the bending part is welded with the annular me