JPH0722548U - Package terminals - Google Patents

Abstract

(57) [Abstract] [Purpose] The present invention is to facilitate the assembly of a package. According to the present invention, in a terminal of a package formed by laminating ceramic bodies having different lengths, the width of the ceramic body is different depending on each part. [Effect] It is possible to facilitate the detection of the direction of the terminal when assembling the package to improve workability and reduce defects due to errors. Further, it is possible to improve the characteristic deterioration caused by the mismatch of the characteristic impedance occurring in the terminal portion.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a terminal of a semiconductor device package.

[0002]

[Prior art]

 As a terminal of a conventional semiconductor device package, there is known a terminal in which ceramic bodies having different lengths are laminated as shown in a plan view of FIG. 7 and a perspective view of FIG. Metallized lines 8a, 8b and 8c are formed on a ceramic body 7 which constitutes a long lower portion, and a short ceramic body 6 is bonded onto the lines. In order to bond this to the package main body, metal parts are formed by metallization on the lower surface 9b of the ceramic body 7, the upper surface 9a of the ceramic body 6 and the side surfaces 9c parallel to both lines. Then, as shown in FIG. 9, when assembling the package, the flange 10a, the side wall 10b, the seal ring 10c and the metallized surfaces 9a, 9b and 9c of the package are bonded with silver solder.

[0003]

[Problems to be solved by the device]

 However, in such a terminal, the width W2 of the line outside the package is larger than the width W1 of the line inside the package in which the characteristic impedance is a predetermined value because the lead 11 is bonded with sufficient strength. Is getting wider. However, this difference in width (W2-W1) is extremely small, and assembling the package by detecting this minute difference and aligning the orientation of the terminals leads to a reduction in work rate and causes of defects. Was becoming.

An object of the present invention is to provide a terminal that facilitates assembly of a package in view of the drawbacks of the related art.

[0005]

[Means for Solving the Problems]

 In order to solve the above technical problems, the present invention makes it possible to form terminals by laminating the ceramic bodies so that the widths thereof are different depending on the portions facing the longitudinal direction, thereby facilitating the detection of the terminal direction.

[0006]

[Action]

 With this configuration, the orientation of the terminals can be easily detected, and the assembly becomes easy when assembling the package.

[0007]

【Example】

 Hereinafter, preferred embodiments of the present invention will be exemplarily described in detail with reference to the drawings. However, unless otherwise specified, the dimensions, materials, shapes, other relative arrangements, etc. of the constituent parts described in this embodiment are not intended to limit the scope of the present invention thereto, but merely an explanation. It is only an example.

FIG. 1 is a top view of a first embodiment of the present invention, FIG. 2 is a perspective view, and FIG. 3 is a perspective view of a package using the terminals of the present invention.

In the terminal of this embodiment, the ceramic bodies 1, 2 and 3 are adhered, and the widths of both the ceramic body 1 and the ceramic body 2 match the width of the terminal engaging portion provided on the package side wall 5a. It has such a width W1. The width of the portion 3b of the ceramic body 3 outside the package is W2. The line 4 is formed on the upper surfaces of the ceramic bodies 2 and 3, and the ceramic body 3 includes a line 4a in a portion inside the package, a line 4b in a portion sandwiched between the ceramic bodies 1 and 2 and a line 4c in a portion outside the package. The widths are different, the line 4a has a line width w2, the line 4c has a line width w1, and the line 4b has a width smaller than the line width w. Each of the lines 4a and 4b has a line width that provides a predetermined characteristic impedance. The side surface 2b of the portion where the width of the ceramic body 2 is changed is also metalized in the same manner as the upper surface 1a of the ceramic body 1, the lower surface 2d of the ceramic body 2 and the side surfaces 1c and 2c other than the wide portions of both ceramic bodies.

As can be seen from FIG. 3, the terminals of this embodiment have different widths inside and outside the package. The orientation of the terminal can be detected by the difference in line width (w2-w1) that is prone to detection error. This makes it possible to reduce the defect rate and reduce the defect rate. Also, the time required for the detection can be shortened.

Further, since the side surface of the ceramic body 3 can also be used for bonding the terminal and the package, the bonding area is increased, so that the ceramic body 3 can be firmly bonded.

FIG. 4 is a top view of the second embodiment of the present invention, FIG. 5 is a perspective view, and FIG. 6 is a perspective view of a package using the terminals of the present invention. The terminals of this embodiment are composed of ceramic bodies 12, 13 and 14. The ceramic body 12 has a width W1 that matches the width of the terminal mounting portion provided on the package side wall 16b. The width of the ceramic body 13 is W3, and the width of the ceramic body 14 is W2. The line 15 has three stages of widths 15a, 15b, and 15c in the length direction, and the contact portion 12a with the ceramic body 12 has a similar width W1. The width of the portion 13a of the ceramic body 13 outside the package is W3, and the width of the portion 13a inside the package is W2. The line 15 is formed on the upper surface of the ceramic body 13 and has a line width 15c that is a portion inside the package, a line 15b that is sandwiched between the ceramic bodies 13 and 14, and a line width that provides a predetermined characteristic impedance of the package. In addition, the external line 15a also has a predetermined characteristic impedance because the width of the portion 13a of the ceramic body 13 outside the package is narrow. The width of the portion 12a of the ceramic body 12 which is the inside of the package is metallized similarly to the upper surface 13a of the ceramic body 13, the lower surface of the ceramic body 13 and the side surfaces of the terminal mounting portions 16d of the packages of both ceramic bodies.

As can be seen from FIG. 6, the terminals of this embodiment have different widths inside and outside the package. The orientation of the terminals is detected not by the line width difference (W2-W1) that is prone to detection errors, but by the ceramic body width difference (W2-W3). This makes it possible to reduce the error in the orientation of the terminals, reduce the defect rate, and shorten the time required for detection.

Further, as described above, it is possible to take into consideration the problem at the lead connection portion outside the package, which cannot be adjusted to the predetermined characteristic impedance so far.

[0015]

[Effect of device]

 As described above, according to the configuration of the present invention, the width of the ceramic body with respect to the longitudinal direction is changed depending on the part, which facilitates the detection of the orientation of the terminals during the assembly of the package, improves the workability, and causes a defect due to an error. Can be reduced. Further, as seen in the second embodiment, the characteristic deterioration due to the mismatch of the characteristic impedance occurring in the terminal portion can be improved.

[Brief description of drawings]

FIG. 1 is a top view of a ceramic terminal according to a first embodiment of the present invention.

FIG. 2 is a perspective view of a ceramic terminal according to a first embodiment of the present invention.

FIG. 3 is a perspective view of a package using a ceramic terminal according to the first embodiment of the present invention.

FIG. 4 is a top view of a ceramic terminal according to a second embodiment of the present invention.

FIG. 5 is a perspective view of a ceramic terminal according to a second embodiment of the present invention.

FIG. 6 is a perspective view of a package using a ceramic terminal according to a second embodiment of the present invention.

FIG. 7 is a top view of a conventional ceramic terminal.

FIG. 8 is a perspective view of a conventional ceramic terminal.

FIG. 9 is a perspective view of a package using a conventional ceramic terminal.

[Explanation of symbols]

 1 Ceramic body 2 Ceramic body 3 Ceramic body 4 Line

Claims (1)

[Scope of utility model registration request] 1. A terminal of a package formed by laminating ceramic bodies having different lengths, wherein the ceramic body is laminated such that the widths of the ceramic bodies are different from each other.