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Calibration plate

A technology of correction film and correction area, applied in the field of correction film, can solve the problems of maintenance cost, long production time, impact of impedance value, etc.

Inactive Publication Date: 2015-06-17
MPI CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the impedance measurement of the existing correction sheet is based on the damping paste 70 as the impedance value. Not only does it take a long time to wait for the damping paste 70 to solidify during production, but the impedance value will also be due to the excessive amount of the damping paste 70 or If it is too small, it will be affected, not only the production time will be longer, but also the quality control will be difficult
In addition, since the thickness of the damping paste 70 is much higher than that of the metal pads 611, 621, 631, when the probe (not shown in the figure) of the detection system moves the needle, its tip is likely to collide with the damping paste 70 Needle breakage, resulting in additional maintenance costs

Method used

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Embodiment Construction

[0015] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.

[0016] Such as figure 2 As shown, the calibration sheet structure 1 of the first preferred embodiment of the present invention includes a substrate 10 and a resistor unit 20 . in:

[0017] In this embodiment, the substrate 10 is a multilayer printed circuit board, and a first calibration area 11, a second calibration area 12, and a third calibration area 13 are distinguished, and the first calibration area 11, the second calibration area Bimetal pads 111 , 121 , 131 are etched on the calibration area 12 and the third calibration area 13 respectively. Wherein the bimetal pads 111 on the first calibration area 11 are disconnected. The bimetal pads 121 on the second calibration area 12 are connected through the internal ...

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Abstract

A substrate has a first side and a second side opposite to the first side. The substrate further has a first calibrating region and a second calibrating region on the first side, on each of which two pads are provided, and the pads on the first calibrating region are or are not electrically connected to each other. A resistance device is provided on the second side of the substrate, wherein the resistance device has a predetermined resistance, and has opposite ends electrically connected to the pads on the second calibrating region.

Description

technical field [0001] The invention relates to detection and correction of circuits, in particular to a correction sheet. Background technique [0002] With the increasingly vigorous development of electronic products, in order to ensure the quality of electronic products when they leave the factory, inspection systems are usually used to detect whether the electrical connections between precision electronic components of electronic products are correct and firm before manufacturing, assembling and leaving the factory. [0003] In order to make the detection more accurate, before the detection system is tested, most of the probes or probe rods will be abutted against such as figure 1 The metal pads 611 , 621 , 631 on the calibration sheet 3 shown are used to compensate the detection value by using the electrical characteristics between each group of metal pads 611 , 621 , 631 . For example, when the probe abuts on the first set of metal pads 611, it is used as a basis for ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R35/00G01R31/02G01R27/02G01R31/50
CPCG01R35/005G01R31/50
Inventor 顾伟正魏豪邱振刚郭世兰
Owner MPI CORP