FINGERPRINT BUTTON UNIT, LIGHT-EMITTING PROMPTING DEVICE, AND ELECTRONIC APPARATUS

• US 20190120472A1
• Filed: 12/17/2018
• Published: 04/25/2019
• Est. Priority Date: 08/12/2016
• Status: Active Grant

• Current Assignee: Guangdong OPPO Mobile Telecommunications Corporation Limited
• Original Assignee: Guangdong OPPO Mobile Telecommunications Corporation Limited
• Inventors: ZHU, Shiqiang, LIN, Chendong
• Granted Patent: US 10,876,722 B2
• Time in Patent Office: Days
• CPC Class Codes: F21V 23/0407 for flashing
• CPC Class Codes: F21V 23/0485 the sensor sensing the physical interaction between a user and certain areas located on the lighting device, e.g. a touch sensor
• CPC Class Codes: F21V 33/00 Structural combinations of lighting devices with other articles, not otherwise provided for
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: G02B 6/0066 characterised by the light source being coupled to the light guide
• CPC Class Codes: G06V 10/147 Details of sensors, e.g. sensor lenses fingerprint or palmprint sensors G06V40/13; vascular sensors G06V40/145; eye sensors G06V40/19
• CPC Class Codes: G06V 40/1318 using electro-optical elements or layers, e.g. electroluminescent sensing
• CPC Class Codes: G06V 40/1329 Protecting the fingerprint sensor against damage caused by the finger
• CPC Class Codes: G06V 40/1347 Preprocessing; Feature extraction
• CPC Class Codes: G06V 40/1365 Matching; Classification
• CPC Class Codes: H04M 1/0277 for a printed circuit board assembly
• CPC Class Codes: H04M 1/22 Illumination; Arrangements for improving the visibility of characters on dials

Abstract

A light-emitting prompting device is provided. The light-emitting prompting device includes a fingerprint button unit received in a receiving hole of a cover assembly of an electronic apparatus. The fingerprint button includes a fingerprint recognition device and a light-emitting portion. The fingerprint recognition device includes a fingerprint cover, a fingerprint chip, and a circuit board. The fingerprint cover defines a light-shielding region and a light-transmitting region. The light-emitting portion is located at one side of the circuit board that is away from the fingerprint chip; a projection of the light-emitting portion on the cover extends beyond a projection of the circuit board, and further extends into the light-transmitting region, such that the light-emitting portion shields the light-transmitting region. A fingerprint button and an electronic apparatus are further provided.

Claims

1. A fingerprint button unit, comprising a fingerprint recognition assembly and a light-emitting portion connected to the fingerprint recognition assembly, wherein the fingerprint recognition assembly comprises:

a cover, defining a light-shielding region and a light-transmitting region, and located at one side of the fingerprint recognition assembly that is away from the light-emitting portion;

a fingerprint chip, located at a position corresponding to the light-shielding region at one side of the cover that is close to the light-emitting portion; and

a circuit board, configured to carry the fingerprint chip, and located at a position corresponding to the light-shielding region at one side of the fingerprint chip that is away from the cover;

wherein the light-emitting portion is located at one side of the circuit board that is away from the fingerprint chip;

a projection of the light-emitting portion on the cover extends beyond a projection of the circuit board, and further extends into the light-transmitting region, such that the light-emitting portion shields the light-transmitting region.

2. The fingerprint button unit of claim 1, wherein an inner surface of the cover is covered with an ink layer, and the light-transmitting region is a preset region in which the ink layer on the inner surface is removed;

the light-shielding region is a region in which the inner surface of the cover is covered by the ink layer.

3. The fingerprint button unit of claim 2, wherein the light-shielding region is located at a middle of the cover, and the light-transmitting region is the region close to an edge of the cover.

4. The fingerprint button unit of claim 2, wherein the light-emitting portion comprises a light-guiding plate and a light source;

the light-guiding plate is disposed at one side of the circuit board that is away from the fingerprint chip, a projection of the light-guiding plate on the cover extends beyond that of the circuit board, and covers, the light-transmitting region;

the light source is disposed close to the light-guiding plate;

the light source emits lights in response to a preset event;

the lights emitted from the light source are guided to the light-transmitting region via the light-guiding plate, and further emitted out of the cover to prompt the preset event.

5. The fingerprint button unit of claim 2, wherein the light-emitting portion comprises a light source disposed at one side of the circuit board that is away from the fingerprint chip, a projection of the light source on the cover extends beyond the circuit board, and further extends into the light-transmitting region;

the light source emits lights in response to a preset event;

the lights emitted from the light source are further emitted out of the cover via the light-transmitting region to prompt the preset event.

6-7. -7. (canceled)

8. A light-emitting prompting device, used in an electronic apparatus comprising a cover assembly;

the cover assembly defining a receiving hole and comprising an inner side;

wherein the light-emitting prompting device comprises a fingerprint button unit received in the receiving hole;

the fingerprint button unit comprises a fingerprint recognition assembly and a light-emitting portion connected to the fingerprint recognition assembly, wherein the fingerprint recognition assembly comprises;

a cover, defining a light-shielding region and a light-transmitting region, and located at one side of the fingerprint recognition assembly that is away from the inner side of the cover assembly;

a fingerprint chip, located at a position corresponding to the light-shielding region at one side of the cover that is close to the inner side; and

a circuit board, configured to carry the fingerprint chip, and located at a position corresponding to the light-shielding region at one side of the fingerprint chip that is away from the cover;

wherein the light-emitting portion is located at one side of the circuit board that is away from the fingerprint chip;

a projection of the light-emitting portion on the cover extends beyond a projection of the circuit board, and further extends into the light-transmitting region, such that the light-emitting portion shields the light-transmitting region from the inner side of the cover assembly.

21. The light-emitting prompting device of claim 8, wherein an inner surface of the cover that is close to the inner side of the cover assembly is covered with an ink layer, and the light-transmitting region is a preset region in which the ink layer on the inner surface is removed;

the light-shielding region is a region in which the inner surface of the cover is covered by the ink layer.

22. The light-emitting prompting device of claim 21, wherein the light-shielding region is located at a middle of the cover, and the light-transmitting region is the region close to an edge of the cover.

23. The light-emitting prompting device of claim 8, wherein the light-emitting portion comprises a light-guiding plate and a light source;

the light-guiding plate is disposed at one side of the circuit board that is away from the fingerprint chip, a projection of the light-guiding plate on the cover extends beyond that of the circuit board, and covers the light-transmitting region;

the light source is disposed close to the light-guiding plate;

the light source emits lights in response to a preset event;

the lights emitted from the light source are guided to the light-transmitting region via the light-guiding plate, and further emitted out of the cover to prompt the preset event.

24. The light-emitting prompting device of claim 8, wherein the light-emitting portion comprises a light source disposed at one side of the circuit board that is away from the fingerprint chip, a projection of the light source on the cover extends beyond the circuit board, and further extends into the light-transmitting region;

the light source emits lights in response to a preset event;

the lights emitted from the light source are further emitted out of the cover via the light-transmitting region to prompt the preset event.

9. An electronic apparatus, comprising a cover assembly and a fingerprint button unit;

the cover assembly defining a receiving hole;

the fingerprint button unit comprising a fingerprint identification device and a light-emitting portion, and the fingerprint recognition assembly being received in the receiving hole;

the fingerprint identification device comprising;

a cover, defining a light-shielding region and a light-transmitting region, and located at one side of the fingerprint recognition assembly that is away from the inner side of the cover assembly;

a fingerprint chip, located at a position corresponding to the light-shielding region at one side of the cover that is close to the inner side; and

a circuit board, configured to carry the fingerprint chip, and located at a position corresponding to the light-shielding region at one side of the fingerprint chip that is away from the cover;

wherein the light-emitting portion is located at one side of the circuit board that is away from the fingerprint chip;

ta projection of the light-emitting portion on the cover extends beyond a projection of the circuit board, and further extends into the light-transmitting region, such that the light-emitting portion shields the light-transmitting region from the inner side of the cover assembly.

10. The electronic apparatus of claim 9, wherein an inner surface of the cover that is close to the inner side of the cover assembly is covered with an ink layer, and the light-transmitting region is a preset region in which the ink layer on the inner surface is removed;

the light-shielding region is a region in which the inner surface of the cover is covered by the ink layer.

11. The electronic apparatus of claim 10, wherein the light-shielding region is located at a middle of the cover, and the light-transmitting region is the region close to an edge of the cover.

12. The electronic device of claim 10, wherein the light-emitting portion comprises a light-guiding plate and a light source;

the light-guiding plate is disposed at one side of the circuit board that is away from the fingerprint chip, a projection of the light-guiding plate on the cover extends beyond that of the circuit board, and covers the light-transmitting region;

the light source is disposed close to the light-guiding plate;

the light source emits lights in response to a preset event;

the lights emitted from the light source are guided to the light-transmitting region via the light-guiding plate, and further emitted out of the cover to prompt the preset event;

or

the light-emitting portion comprises a light source disposed at one side of the circuit board that is away from the fingerprint chip, a projection of the light source on the cover extends beyond the circuit board, and further extends into the light-transmitting regions;

the light source emits lights in response to a preset event;

the lights emitted from the light source are further emitted out of the cover via the light-transmitting region to prompt the preset event.

15. The electronic apparatus of claim 10, wherein the electronic apparatus further comprises;

a power supply circuit, connected to a light source of the light-emitting portion and configured to supply power to the light source;

wherein the power supply circuit comprises a power source and a power switch, and the power switch is connected between the power source and the light source; and

a processor, configured to turn on the power switch when the preset event occurs, such that the power source is capable of supplying power to the light source, and the light source emits lights;

the lights emitted from the light are emitted out of the electronic apparatus via the light-transmitting region for prompting.

16. The electronic apparatus of claim 15, wherein the preset event is a fingerprint touch event;

the processor is further connected to the fingerprint chip of the fingerprint identification device, and configured to turn on the power switch when a touch from a user is detected by the fingerprint chip, such that the power source is capable of supplying power to the light source, and the light source is electrically illuminated and emits lights;

the emitted lights are emitted out of the electronic apparatus via the light-transmitting region.

17. The electronic apparatus of claim 15, wherein the processor is configured to continuously turn on the power switch, such that the light source continuously emits lights;

or the processor is configured to alternately turn on and off the power switch, such that the light source flickeringly emits lights.

18. The electronic apparatus of claim 15, wherein the power switch is a MOS transistor;

a drain electrode of the MOS transistor is connected to the power source, a source electrode of the MOS transistor is connected to the light source, and a gate electrode of the MOS transistor is connected to the processor;

the processor is configured to generate a corresponding level signal to turn on or off the MOS transistor.

19. The electronic apparatus of claim 9, wherein the cover assembly is a front cover or a rear cover of the electronic apparatus.

20. The electronic apparatus of claim 9, wherein the fingerprint chip is packaged by means of ball grid array technology or by means of land grid array technology.

13-14. -14. (canceled)