Laser detection unit circuit, laser detection integrated circuit, and semiconductor chip
A technology of laser detection and unit circuit, which is applied in the field of semiconductors, can solve the problems of low security and too large area of PNP transistors, etc., and achieve the effect of improving security, avoiding the possibility of being attacked, and reducing the possibility
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[0018] It can be seen from the background art that laser detection circuits composed of PNP transistors are not suitable as light detectors for semiconductor chips, because they are not suitable for automatic placement by automatic layout tools. Due to the large area of the PNP transistor, the physical boundary is obvious, and it is larger than the general standard unit, it is easy for the attacker to find, locate and avoid it during the actual attack process, so that the laser detection circuit does not play its actual detection role.
[0019] At the same time, due to the large area of the PNP transistor, the area of the laser detection circuit is relatively large, which is easy to be discovered and attacked by an attacker, resulting in low security. For example, an attacker attacks the enable switch in the laser detection circuit, so that the detection function of the laser detection circuit is lost.
[0020] Moreover, the PNP triode is an analog device, which must be ...
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