Chip crack detection circuit, fingerprint chip, fingerprint chip module and electronic equipment
A technology for detecting circuits and lobes, which is applied in the direction of measuring electricity, measuring electrical variables, and electronic circuit testing, etc., and can solve problems such as easy breakage, reduced strength of chips or chip modules, and easy short circuits of circuits
Pending Publication Date: 2021-06-01
SHENZHEN FUSHI TECH CO LTD
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Problems solved by technology
However, the miniaturized design will reduce the strength of the chip or chip module and make it easy to break. After the chip or chip module is broken, the internal circuit is easy to short circuit and cause the temperature to rise, which may burn the user or even cause a fire. and other security incidents
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[0048] Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary, and are only for explaining the present application, and should not be construed as limiting the present application. In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly indicating the quantity or quantity of the indicated technical features. Order. Therefore, the technical features defined as "first" and "second" may explicitly or implicitly include one or more of said technical features. In the description of the present application, "plurality" means two or mor...
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The invention provides a chip crack detection circuit. The chip crack detection circuit is arranged in an integrated circuit bare chip to detect whether the integrated circuit bare chip is cracked or not. The chip crack detection circuit comprises a processor which comprises a detection signal output end, a detection signal receiving end and an alarm signal output end, and a detection line which is connected with the detection signal input end and the detection signal output end so that the processor and the detection line form a detection loop, wherein the processor sends out a first detection signal through the detection signal output end, the first detection signal forms a preset second detection signal after being transmitted through the detection line, and if the processor does not receive a signal after the first detection signal is sent out after a preset time delay or the received signal is not consistent with a preset second detection signal, the processor judges that the integrated circuit bare chip is cracked at a position where the detection line passes and outputs an alarm signal through the alarm signal output end. The invention further provides a fingerprint chip, a fingerprint chip module and electronic equipment.
Description
technical field [0001] The application belongs to the technical field of semiconductors, and in particular relates to a split detection circuit, a fingerprint chip, a fingerprint chip module and electronic equipment. Background technique [0002] In order to meet the design requirements of thinner and lighter electronic equipment, chips or chip modules disposed on the electronic equipment also tend to be miniaturized, and are made thinner or thinner. However, the miniaturized design will reduce the strength of the chip or chip module and make it easy to break. After the chip or chip module is broken, the internal circuit is easy to short circuit and cause the temperature to rise, which may burn the user or even cause a fire. and other security incidents. Contents of the invention [0003] The present application provides a split detection circuit that can solve the above technical problems, and also provides a fingerprint chip using the split detection circuit, a fingerpr...
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IPC IPC(8): G01R31/28G01R31/26
CPCG01R31/26G01R31/2856
Inventor 杜俊涛吴佳华
Owner SHENZHEN FUSHI TECH CO LTD