Contact image-sensing module having fingerprint scanning function

A contact image-sensing module having fingerprint scanning function, comprising:

• a flex/rigid composite substrate having a first rigid circuit substrate, a second rigid circuit substrate, a third rigid circuit substrate, and at least one flex circuit board, wherein the first rigid circuit substrate, the second rigid circuit substrate, and the third rigid circuit substrate are respectively and electrically connected to the flex circuit board in order to form a first composite substrate, a second composite substrate, and a third composite substrate, each of the second composite substrate and the third composite substrate respectively not being positioned in a same plane and having a predetermined angle with respect to a plane where the first composite plane is located;
• a linear sensing element array on the second composite substrate;
• a light source on the third composite substrate;
• a focusing device axially parallel to the linear sensing element array;
• and
• a light-guiding device axially parallel to the linear sensing element array;
• wherein the light source is adjacent to one end of the light-guiding device and the focusing device is located between the light-guiding device and the linear sensing element array.