Fingerprint identifying module with indicating function
The present invention relates to a fingerprint identifying module with an indicating function, including a circuit board, a fingerprint sensing element, a light emitting element, and a light guide structure. Both the fingerprint sensing element and the light emitting element are provided on the circuit board. The light guide structure surrounds the fingerprint sensing element and is close to the light emitting element; and may guide a light beam generated by the light emitting element, and enable the light beam to move within the light guide structure. Because the light guide structure surrounding the fingerprint sensing element generates a light emitting effect, a position of the fingerprint sensing element may be displayed.
1. A fingerprint identifying module with an indicating function, provided between an electronic device and a glass cover plate, wherein the fingerprint identifying module with an indicating function comprises:
a circuit board;
a fingerprint sensing element, provided on an upper surface of the circuit board, and configured to detect a fingerprint image of a finger;
a light emitting element, provided on a lower surface of the circuit board, located below the fingerprint sensing element, and configured to generate a light beam; and
a light guide structure, surrounding the fingerprint sensing element, close to the light emitting element, and configured to guide the light beam and enable the light beam to move within the light guide structure, so as to display a position of the fingerprint sensing element.
2. The fingerprint identifying module with an indicating function according to claim 1 , wherein the light guide structure comprises:
a surrounding portion, surrounding the fingerprint sensing element, and for the light beam to move within the light guide structure, so as to enable the surrounding portion to emit light;
a light incident portion, close to the light emitting element for the light beam to enter;
a reflection portion, close to the light incident portion, and configured to reflect the light beam; and
an extension portion, located between the surrounding portion and the reflection portion, and configured to enable the light beam to pass through and be projected to the surrounding portion, wherein, the light guide structure may display, according to the surrounding portion which emits light, a position of the fingerprint sensing element.
3. The fingerprint identifying module with an indicating function according to claim 2 , wherein the reflection portion is a slope portion between the light incident portion and the extension portion, and is formed by providing a high-reflective coating film on the slope portion.
4. The fingerprint identifying module with an indicating function according to claim 1 , wherein the fingerprint sensing element and the light emitting element are both provided on an upper surface of the circuit board.
5. The fingerprint identifying module with an indicating function according to claim 1 , wherein the fingerprint sensing element is provided on the circuit board by using a Surface Mount Technology (SMT).
6. The fingerprint identifying module with an indicating function according to claim 1 , wherein the fingerprint sensing element is packed in a manner of land grid array (Land Grid Array, LGA) or ball grid array (Ball Grid Array, BGA).
7. The fingerprint identifying module with an indicating function according to claim 1 , wherein the circuit board is a flexible circuit board (FPC).