Fingerprint and proximity sensing apparatus and sensing process thereof
AssigneeNovatek Microelectronics Corp.
InventorsJung-Chen Chung, Chi-Ting Chen
Life of this patent
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Abstract
A fingerprint and proximity sensing apparatus for fingerprint recognizing and proximity sensing is provided. The fingerprint and proximity sensing apparatus includes a display panel, a fingerprint sensor, and at least one proximity sensing light emitting diode. The fingerprint sensor has an optical sensing array. The optical sensing array is configured to receive a first light emitted from the display panel and a second light emitted from the at least one proximity sensing light emitting diode at different time periods. The first light and the second light have different ranges of wave length. A sensing process is also provided.
Claims24
A fingerprint and proximity sensing apparatus, for fingerprint recognizing and proximity sensing, comprising:
- a display panel;
- a fingerprint sensor having an optical sensing array;
- and
- at least one proximity sensing light emitting diode, wherein the optical sensing array is configured to receive a first light emitted from the display panel and a second light emitted from the at least one proximity sensing light emitting diode at different time periods, and the first light and the second light have different ranges of wave length.
A fingerprint and proximity sensing apparatus, for fingerprint recognizing and proximity sensing, comprising:
- a display panel comprising a plurality of light emitting diodes (LEDs);
- and
- a fingerprint sensor having an optical sensing array, wherein the optical sensing array is configured to receive a first light and a second light emitted from the LEDs of the display panel at a first time period and a second time period, respectively,
- wherein, in the first time period, a first object is in contact with the display panel, the first light is emitted from the display panel and then is reflected by the first object to the optical sensing array for fingerprint recognition, and
- wherein, in the second time period, a second object is in front of but not in contact with the display panel, the second light is emitted from the display panel and then is reflected by the second object to the optical sensing array for proximity sensing.
A sensing process in a phone with a fingerprint and proximity sensing apparatus having a display panel, a fingerprint sensor, and at least one proximity sensing light emitting diode, comprising:
- starting a phone call;
- detecting whether an object is in contact with the display panel;
- turning off the display panel when the object is in contact with the display panel;
- and
- turning on the at least one proximity sensing light emitting diode for proximity sensing.
A data processing apparatus, configured to drive a sensing array of a fingerprint and proximity sensing apparatus, the sensing array comprising a fingerprint sensing array and a proximity sensing array, the data processing apparatus comprises:
- a row driving circuit, providing signals for the fingerprint sensing array in a first time period and providing the signals for the proximity sensing array in a second time period;
- and
- a column read-out circuit, receiving first sensing signals from the fingerprint sensing array in the first time period and receiving second sensing signals from the proximity sensing array in the second time period, wherein the first time period and the second time period are different from each other.
Dependencies are inferred from the claim text.