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Image sensor having a multi-layered printed circuit board with increased parallel-plate capacitance and method for manufacturing the same
Image sensor having a multi-layered printed circuit board with increased parallel-plate capacitance and method for manufacturing the same
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机译:具有具有增加的平行板电容的多层印刷电路板的图像传感器及其制造方法
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摘要
A multi-layered printed circuit board forms a base of a sensor board. Sensor chips are mounted on the multi-layered printed circuit board. The multi-layered printed circuit board is composed of a substrate, a first conductor layer, an internal insulator layer, a second conductor layer, and a surface insulator layer. An analog ground line is formed of the electrolytic copper foil of the first conductor layer by chemical etching. A signal line is formed of the electrolytic copper foil of the second conductor layer by chemical etching. Insulator layers are formed between the first conductor layer and the second conductor layer to generate a distributed capacitance between the signal line and the analog ground line for filtering out noise and improving performance.
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