JPH04286400A - Signal observing sheet - Google Patents

Abstract

PURPOSE:To enable the electric signals of a protrudent pin and a pad to be easily observed as the protrudent pin is kept in contact with the pad in a case that a first and a second electric circuit are electrically connected together by bringing the protrudent pins (pogo pins) into contact with the pad CONSTITUTION:A signal observing sheet 5 is provided with a contact pad 6 which comes into contact with both a protrudent pin 3 of a first electric circuit 1 and a pad 4 of a second electric circuit 2 on its front and rear, an extension extending from the pad 6 along the sheet 5, and a signal observing pad connected to the tip of the extension.

Description

[Detailed description of the invention]

0001

[Industrial Field of Application] This invention is designed to connect protruding pins (pogo pins) of the electric circuit section on the transmission side and the electric circuit section on the reception side when transmitting signals from the electric circuit section on the electric signal transmission side to the electric circuit on the reception side. This invention relates to a sheet for observing electrical signals transmitted by contact with pads.

0002

2. Description of the Related Art FIG. 5 is a diagram showing how electrical signals are transmitted using protruding pins (pogo pins) for signal transmission. 1 is an electric circuit section; 2 is a second electric circuit section that obtains and processes electric signals from the first electric circuit section 1; This is a protruding pin (pogo pin) attached to the first electric circuit section 1 to transmit an electric signal of the electric circuit section 2. Reference numeral 4 denotes a pad provided on the second electric circuit section 2 for contact with the protruding pin 3.

Next, the operation will be explained. When it is necessary to transmit an electric signal between the first electric circuit section 1 and the second electric circuit section 2, each protruding pin 3 of the first electric circuit section 1 and the corresponding second The pads 4 provided on the electric circuit section 2 are brought into close contact with each other until they are sufficiently electrically conductive. The electric signal generated in the first electric circuit section 1 is sent to the second electric circuit section 2 through the protruding pin 3 and the pad 4, and the electric signal generated in the second electric circuit section 2 is sent to the second electric circuit section 2 through the protruding pin 3 and the pad 4. The signal is transmitted to the first electric circuit section 1 through the pin.

0004

[Problem to be Solved by the Invention] When transmitting electrical signals using the protruding pin, the configuration is as described above, so if the distance between the protruding pin 3 and the pad 4 is small, the position of the protruding pin and the pad 4 may be changed. is located at the center of the electric circuit sections 1 and 2 and is far from the periphery of the electric circuit section, or when there is no electrical signal observation terminal, etc., the protruding pin 3,
Since it is not possible to connect a probe etc. to pad 4,
There was a problem that an electric signal could not be observed while the protruding pin 3 and the pad 4 remained in contact with each other.

[0005] This invention was made to solve the above-mentioned problems, and when transmitting an electrical signal using a protruding pin, the electrical signal between the protruding pin and the pad is transmitted while the protruding pin and the pad are in contact with each other. The purpose of this invention is to obtain a signal observation sheet that allows easy observation of signals.

[0006]

[Means for Solving the Problems] A signal observation sheet according to the present invention includes a contact pad whose front and back surfaces are in contact with a protruding pin of a first electric circuit section and a pad of a second electric circuit section;
It comprises an extension part extending along the sheet from this contact pad, and a signal observation pad connected to the tip of this extension part.

[0007]

[Operation] The signal observation sheet according to the present invention is inserted between the protruding pin of the first electric circuit section and the pad of the second electric circuit section, and the probe etc. is inserted with the protruding pin and the pad in contact with the contact pad. Observe the signal by touching the signal observation pad.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. In FIG. 1, reference numerals 1 and 2 indicate first and second electric circuit sections for mutually transmitting electric signals, and reference numeral 3 indicates a first electric circuit section 1 for contacting a pad of the second electric circuit section 2. 4 is a pad provided on the second electric circuit section 2 to make contact with the protruding pin 3; 5 is a signal observation sheet according to the present invention for observing electrical signals; 6 is a contact pad that connects the protruding pin 3 and the pad 4 when the signal observation sheet is sandwiched between the protruding pin 3 and the pad 4 of the first and second electric circuit sections 1 and 2;
Reference numeral 7 denotes a signal observation pad, which is connected by a patterned wiring extension 8 extending from the contact pad 6, and is provided at the tip of this extension 8, that is, around the signal observation sheet 5. 2 is a top view of FIG. 1, FIG. 3 is a diagram showing the signal observation sheet 5, and FIG. 4 is a sectional view of the main part of the contact portion between the protruding pin 3, the signal observation sheet 5, and the pad 4, excluding the shaded area. is electrically isolated. That is, the signal observation sheet 5 has the front and back surfaces 6a and 6b of the contact pad 6 exposed, and is brought into contact with the protruding pin 3 and the pad 4. Further, the surface of the signal observation pad 7 is exposed and is contacted by a probe or the like. The extension part 8 is provided within the seat 5,
A contact pad 6 and a signal observation pad 7 are connected. According to this, it is possible to prevent a short circuit between the respective extension parts 8 due to the extension parts 8 being exposed.

When observing the waveform when the protruding pin 3 and the pad 4 are in contact, the signal observation sheet 5 is sandwiched between the protruding pin 3 and the pad 4. As shown in FIG. 2, the signal observation sheet 5 is made larger than the electric circuit section 1, and the signal observation pad 7 is brought out through an extension 8, so that when this pad 7 is observed, the protruding pin 3 can be seen. Waveforms can be observed. Furthermore, since the contact pad 6 is electrically connected to both the protruding pin 3 and the pad 4, the electrical signal from the protruding pin 3 is also transmitted to the corresponding pad 4. Further, the electrical signal from the pad 4 can also be observed on the signal observation pad 7.

0010

[Effect of the invention] As described above, according to this invention, the table,
A contact pad whose back surface contacts the protruding pins and pads of the first and second electric circuit sections, an extension extending from the contact pad along the sheet, and a signal observation pad connected to the tip of the extension. By sandwiching a signal observation sheet provided with the above between the protruding pin and the pad, there is an effect that the electrical signals of the protruding pin and the pad can be easily observed when the protruding pin and the pad are in contact with each other.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a signal observation method according to an embodiment of the present invention.

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a diagram showing a signal observation sheet according to an embodiment of the present invention.

FIG. 4 is a cross-sectional view of main parts showing contact parts of a protruding pin, a signal observation sheet, and a pad according to an embodiment of the present invention.

FIG. 5 is a diagram showing a conventional signal observation method.

[Explanation of symbols]

1 First electric circuit section 2 Second electric circuit section 3. Protruding pin (pogo pin) 4 Pad 5 Signal observation sheet 6 Contact pad 7 Signal observation pad 8 Extension part

Claims (1)

[Claims] 1. A first electric circuit section having a protruding pin for transmitting an electric signal, and a second electric circuit section having a pad with which the protruding pin comes into contact, and between the protruding pin and the pad. A signal observation sheet inserted into the signal observation sheet, the signal observation sheet comprising: a contact pad whose front and back surfaces are in contact with the protruding pin and pad; an extension extending from the contact pad along the sheet; A signal observation sheet comprising a signal observation pad connected to the tip of the extension.