Fingerprint recognition device and touch control device with fingerprint recognition function
A fingerprint recognition device includes a light-transmissible substrate, a plurality of sensing elements, a set of conductive lines and a fingerprint recognition chip. The sensing elements are disposed and the set of conductive lines are an upper surface of the light-transmissible substrate. The fingerprint recognition chip is also disposed on the upper surface of the light-transmissible substrate, and is connected to the sensing elements through the set of conductive lines. The fingerprint recognition chip drives the sensing elements, receives a plurality of sensing results generated by the sensing elements, and accordingly determines a user fingerprint.
1. A fingerprint recognition device, comprising:
a light-transmissible substrate;
a sensor formed by a plurality of sensing elements, disposed on an upper surface of the light-transmissible substrate;
a set of conductive lines, disposed on the upper surface of the light-transmissible substrate;
a fingerprint recognition chip, disposed on the upper surface of the light-transmissible substrate, connected to the sensing elements through the set of conductive lines, driving the sensing elements, receiving a plurality of sensing results generated by the sensing elements, and accordingly determining a user fingerprint; and
a light emitting module, disposed on a light emitting substrate, the light emitting substrate being substantially parallel to the light-transmissible substrate and facing a lower surface of the light-transmissible substrate.
2. The fingerprint recognition device according to claim 1 , wherein the fingerprint recognition chip is an integrated circuit chip in a flip-chip package, and is connected to the light-transmissible substrate through a conductive adhesive.
3. The fingerprint recognition device according to claim 1 , further comprising:
a controller, coupled to the fingerprint recognition chip and the light emitting module, controlling the light emitting module according to the user fingerprint determined by the fingerprint recognition chip.
4. The fingerprint recognition device according to claim 1 , wherein the sensor comprises a cover layer that receives a user touch and an electrode layer that is protected by the cover layer, the fingerprint recognition device further comprising:
a housing, accommodating the light-transmissible substrate, the sensor, the set of conductive lines and the fingerprint recognition chip, an upper wall of the housing being provided with an opening that reveals a sensing surface of the cover layer;
wherein, in a reference direction perpendicular to the light-transmissible substrate and away from the upper surface, the sensing surface of the cover layer is lower than the upper wall of the housing, and the opening comprises an inclined portion that inclines downwards from the upper wall towards the sensing surface.
5. The fingerprint recognition device according to claim 1 , wherein the sensor comprises a cover layer that receives a user touch and an electrode layer that is protected by the cover layer, the fingerprint recognition device further comprising:
a housing, accommodating the light-transmissible substrate, the sensor, the set of conductive lines and the fingerprint recognition chip, an upper wall of the housing comprising an opening that reveals a sensing surface of the cover layer;
wherein, in a reference direction perpendicular to the light-transmissible substrate, a height of the sensing surface of the cover layer is substantially equal to that of the upper wall of the housing.
6. The fingerprint recognition device according to claim 1 , wherein the sensor comprises a cover layer that receives a user touch and an electrode layer that is protected by the cover layer, the fingerprint recognition device further comprising:
a housing, accommodating the light-transmissible substrate, the sensor, the set of conductive lines and the fingerprint recognition chip, an upper wall of the housing comprising an opening that reveals a sensing surface of the cover layer;
a main circuit board; and
a conductive element, electrically connected between an inner side of the housing and a fixed voltage end of the main circuit board.
7. The touch control device according to claim 1 , wherein the light module is configured to provide a plurality of light beams to a sensing region of the sensor via the light-transmissible substrate, and the plurality of light beams pass through the sensing region.
8. A touch control device configured to recognize fingerprint, comprising:
a light-transmissible substrate;
a plurality of first sensing elements, disposed in a first region of an upper surface of the light-transmissible substrate;
a set of conductive lines, disposed on the upper surface of the light-transmissible substrate;
a fingerprint recognition chip, disposed on the upper surface of the light-transmissible substrate, connected to the first sensing elements through the set of conductive lines, driving the first sensing elements, receiving a plurality of first sensing results generated by the first sensing elements, and accordingly determining a user fingerprint;
a plurality of second sensing elements, disposed in a second region of the upper surface of the light-transmissible substrate, the second region and the first region forming a touch control region; and
a touch control circuit, driving the second sensing elements, receiving a plurality of second sensing results generated by the second sensing elements, and determining a user touch occurring in the touch control range according to at least a part of the first sensing results and the second sensing results.
9. The touch control device according to claim 8 , wherein the fingerprint recognition chip is an integrated circuit chip in a flip-chip package, and is connected to the light-transmissible substrate through a conductive adhesive.
10. The touch control device according to claim 8 , further comprising:
a light emitting module, disposed on a light emitting substrate, the light emitting substrate being substantially parallel to the light-transmissible substrate and facing a lower surface of the light-transmissible substrate.
11. The touch control device according to claim 10 , further comprising:
a controller, coupled to the fingerprint recognition chip and the light emitting module, controlling the light emitting module according to the user fingerprint determined by the fingerprint recognition chip.