CN107195661B

CN107195661B - OLED panel

Info

Publication number: CN107195661B
Application number: CN201710398563.4A
Authority: CN
Inventors: 何全华
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2017-05-31
Filing date: 2017-05-31
Publication date: 2020-11-06
Anticipated expiration: 2037-05-31
Also published as: CN107195661A

Abstract

The disclosure relates to an OLED panel, and belongs to the technical field of electronics. The OLED panel includes: the OLED panel includes: a substrate having a first surface and a second surface opposite the first surface; and an OLED pixel array on the first surface of the substrate, the OLED pixel array including a plurality of OLED subpixels; the ultrasonic detection unit comprises a transmitter array and a receiver array, and at least one part of orthographic projection of the transmitter array and the receiver array on the plane where the OLED pixel array is located falls into the OLED pixel array; the transmitter array comprises a plurality of transmitter groups, the receiver array comprises a plurality of receiver groups, and the plurality of transmitter groups and the plurality of receiver groups are arranged at intervals. According to the terminal, fingerprint identification can be carried out only through the display area of the OLED panel, so that the area occupied by the screen on the OLED panel is increased, the screen occupation ratio of the terminal is increased, and the display performance is improved.

Description

OLED panel

Technical Field

The present disclosure relates to the field of electronic technologies, and in particular, to an OLED (Organic Light-Emitting Diode) panel.

Background

Because fingerprints have lifetime invariance and uniqueness, and fingerprints of different users are different, along with the continuous development of electronic technology, in order to ensure the security of user identity, the fingerprint identification technology is more and more widely applied, for example, the fingerprint identification technology can be used in situations requiring identity verification, such as bank payment, application unlocking and the like.

Currently, a terminal generally performs fingerprint recognition through a physical key in a panel, and a sensor for performing fingerprint recognition may be configured in the physical key to recognize a fingerprint of a user.

Disclosure of Invention

To overcome the problems in the related art, the present disclosure provides an OLED panel, a fingerprint identification method and apparatus.

According to a first aspect of embodiments of the present disclosure, there is provided an OLED panel including: a substrate having a first surface and a second surface opposite the first surface; and the number of the first and second groups,

an OLED pixel array on the first surface of the substrate, the OLED pixel array including a plurality of OLED subpixels; and the number of the first and second groups,

an ultrasonic detection unit comprising a transmitter array and a receiver array, at least a part of orthographic projections of the transmitter array and the receiver array on a plane on which the OLED pixel array is located falls within the OLED pixel array;

wherein the transmitter array comprises a plurality of transmitter groups, each transmitter group comprising at least one transmitter for transmitting ultrasound waves; the receiver array comprises a plurality of receiver groups, each receiver group comprising at least one receiver for converting received ultrasonic waves into electrical signals; the plurality of transmitter groups are spaced apart from the plurality of receiver groups.

Optionally, the plurality of transmitter groups and the plurality of receiver groups are located on a second surface of the substrate.

Optionally, the OLED panel further comprises a polarizing layer, wherein the plurality of emitter sets and the plurality of receiver sets are located between the polarizing layer and the OLED pixel array.

Optionally, the plurality of emitter groups and the plurality of receiver groups are located at gaps between the plurality of OLED subpixels.

Optionally, the plurality of emitter groups and the plurality of receiver groups are located on a black matrix between the plurality of OLED subpixels.

Optionally, the ultrasound detection unit is configured to form part of a detection circuit for an ultrasound biometric sensor.

Optionally, the ultrasonic biometric sensor is a fingerprint sensor.

Optionally, the fingerprint sensor is configured to identify fingerprints from at least two fingers simultaneously.

Optionally, the ultrasound biometric sensor is a palm print sensor.

Optionally, at least one of the at least one transmitter and the at least one receiver is made of a piezoelectric material.

According to a second aspect of the embodiments of the present disclosure, there is provided a fingerprint identification method applied to a terminal mounted with the OLED panel provided by the first aspect, the method including:

transmitting ultrasonic waves by a plurality of transmitters in the ultrasonic detection unit and detecting reflected waves of the ultrasonic waves by a plurality of receivers in the ultrasonic detection unit when a touch operation for fingerprint recognition is detected;

determining a fingerprint image based on times at which the plurality of receivers detect the reflected wave and an intensity of the reflected wave.

Optionally, the determining a fingerprint image based on the times at which the plurality of receivers detected the reflected waves and the intensities of the reflected waves, comprises:

determining, for each of the plurality of receivers, a target reflected wave from reflected waves detected by the receiver, the time at which the target reflected wave is detected by the receiver being within a preset time period;

when the intensity of the target reflected wave is within a first preset intensity range, determining that the position of the receiver corresponds to the position of a ridge line in the fingerprint image;

when the intensity of the target reflected wave is within a second preset intensity range, determining that the position of the receiver corresponds to the position of the valley line in the fingerprint image.

According to a third aspect of the embodiments of the present disclosure, there is provided a fingerprint identification device having the OLED panel provided in the first aspect mounted thereon, the device including:

a transmitting and receiving module for transmitting ultrasonic waves through a plurality of transmitters in the ultrasonic detection unit and detecting reflected waves of the ultrasonic waves through a plurality of receivers in the ultrasonic detection unit when a touch operation for fingerprint recognition is detected;

a determining module for determining a fingerprint image based on the time at which the plurality of receivers detected the reflected wave and the intensity of the reflected wave.

Optionally, the determining module includes:

a first determining sub-module for determining, for each of the plurality of receivers, a target reflected wave from reflected waves detected by the receiver, the time at which the target reflected wave is detected by the receiver being within a preset time period;

the second determining submodule is used for determining that the position of the receiver corresponds to the position of the ridge line in the fingerprint image when the intensity of the target reflected wave is within a first preset intensity range;

and the third determining sub-module is used for determining that the position of the receiver corresponds to the position of the valley line in the fingerprint image when the intensity of the target reflected wave is within a second preset intensity range.

According to a fourth aspect of the embodiments of the present disclosure, there is provided a fingerprint identification device having the OLED panel provided in the first aspect mounted thereon, the device including:

a processor;

a memory for storing processor-executable instructions;

wherein the processor is configured to perform the fingerprint identification method of the second aspect.

According to a fifth aspect of embodiments of the present disclosure, there is provided a computer-readable storage medium having stored therein instructions, which, when run on a computer, cause the computer to perform the fingerprint identification method of the second aspect described above.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: in the disclosed embodiment, the OLED panel comprises a substrate, an OLED pixel array and an ultrasonic detection unit. Because the transmitter array and the receiver array that ultrasonic detection unit includes all are located the display area of this OLED panel, consequently, the terminal of installing this OLED panel is when carrying out the discernment of hand lines such as fingerprint, palm line, need not to increase extra physical button on this OLED panel and discern, but can directly discern through transmitter array and the receiver array that is located the display area of this OLED panel, thereby can avoid the extra occupation of physical button to this OLED panel, increase the area that the screen occupies on this OLED panel, and then increased the screen ratio of occupying at terminal, the display performance at terminal has been improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.

Fig. 1 is a schematic structural diagram illustrating a first OLED panel according to an exemplary embodiment.

FIG. 2 is a schematic diagram illustrating a structure of a substrate according to an exemplary embodiment.

Fig. 3 is a schematic structural diagram illustrating an OLED pixel array according to an exemplary embodiment.

Fig. 4 is a schematic structural diagram illustrating an ultrasonic detection unit according to an exemplary embodiment.

Fig. 5 is a schematic diagram illustrating a transmitter array and receiver array configuration according to an exemplary embodiment.

Fig. 6A is a schematic structural diagram illustrating a second OLED panel according to an exemplary embodiment.

Fig. 6B is a schematic structural diagram illustrating a third OLED panel according to an exemplary embodiment.

Fig. 6C is a schematic structural diagram illustrating a fourth OLED panel according to an exemplary embodiment.

Fig. 6D is a schematic structural diagram illustrating a fifth OLED panel according to an exemplary embodiment.

FIG. 7 is a flow chart illustrating a method of fingerprinting in accordance with an exemplary embodiment.

FIG. 8 is a block diagram illustrating a fingerprint recognition device according to an example embodiment.

FIG. 9 is a block diagram illustrating another fingerprint recognition device according to an example embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

Before explaining the embodiments of the present disclosure in detail, an application scenario of the embodiments of the present disclosure will be explained. In order to ensure the security of the user identity, the fingerprint identification technology has been widely applied to the situations that the bank payment, the application unlocking and the like need to be authenticated. Currently, a terminal generally performs fingerprint recognition through a physical key in a panel, and a sensor for performing fingerprint recognition may be configured in the physical key to recognize a fingerprint of a user. In order to facilitate the user to press the fingerprint and to be able to identify the fingerprint more accurately, the size of the physical key is often larger. At the moment, the area occupied by the physical key on the panel is larger, and the area occupied by the screen on the panel is smaller, so that the screen occupation ratio of the terminal is smaller, and the display performance of the terminal is lower. Therefore, the embodiment of the disclosure provides an OLED panel to increase the screen ratio of a terminal and improve the display performance of the terminal.

Fig. 1 is a schematic structural diagram illustrating an OLED panel according to an exemplary embodiment. Referring to fig. 1, the OLED panel includes: the device comprises a substrate 1, an OLED pixel array 2 and an ultrasonic detection unit 3;

therein, see fig. 2, a substrate 1 having a first surface 11 and a second surface 12 opposite the first surface 11;

wherein, referring to fig. 3, the OLED pixel array 2 is located on the first surface 11 of the substrate 1, the OLED pixel array 2 includes a plurality of OLED sub-pixels 21;

wherein, referring to fig. 4, the ultrasonic detection unit 3 comprises a transmitter array 31 and a receiver array 32, at least a part of the orthographic projection of the transmitter array 31 and the receiver array 32 on the plane of the OLED pixel array 2 falls within the OLED pixel array 2;

wherein, referring to fig. 5, the transmitter array 31 includes a plurality of transmitter groups 311, each transmitter group including at least one transmitter a for transmitting an ultrasonic wave; the receiver array 32 includes a plurality of receiver groups 321, each receiver group including at least one receiver b for converting received ultrasonic waves into electrical signals; the plurality of transmitter groups 311 are spaced apart from the plurality of receiver groups 321.

It should be noted that the OLED pixel array 2 is used for displaying a picture, and the OLED pixel array 2 includes a plurality of pixels, each pixel is composed of a plurality of OLED sub-pixels capable of emitting light of different colors, for example, each pixel may be composed of an R sub-pixel capable of emitting red light, a G sub-pixel capable of emitting green light, and a B sub-pixel capable of emitting blue light.

In addition, in order to ensure the identification accuracy of fingerprints, palmprints and other hand prints, the size of the at least one transmitter a and the at least one receiver b can be set to be smaller, such as the same size as the OLED sub-pixels, and of course, can also be set to be smaller 40 micrometers, 50 micrometers and the like.

Also, at least one of the at least one transmitter a and the at least one receiver b may be made of a piezoelectric material, which may be PVDF (polyvinylidene fluoride), PZT (lead zirconate titanate), or the like.

It should be noted that the orthographic projections of the emitter array 31 and the receiver array 32 on the plane of the OLED pixel array 2 may partially or completely fall within the OLED pixel array 2, and in this case, the emitter array 31, the receiver array 32 and the OLED pixel array 2 are all located in the same area of the OLED panel. Since the OLED pixel array 2 is located in a display area of the OLED panel for displaying a picture, both the transmitter array 31 and the receiver array 32 are also located within the display area of the OLED panel.

Install the terminal of this OLED panel when carrying out the discernment of hand marks such as fingerprint, palm line, need not to increase extra physical button on this OLED panel and discern, but can directly discern through transmitter array 31 and receiver array 32 that are located the display area of this OLED panel, thereby can avoid the extra occupation of physical button to this OLED panel, the area that the increase screen took on this OLED panel, and then the screen that has increased the terminal accounts for the ratio, the display performance at terminal has been improved.

It is noted that the ultrasonic detection unit 3 is configured to form part of a detection circuit for an ultrasonic biometric sensor. The ultrasonic detection unit 3 can detect the biological characteristics by ultrasonic waves, such as fingerprint, palm print, and the like.

The ultrasonic biometric sensor is used for identifying biological characteristics through ultrasonic waves, and for example, the ultrasonic biometric sensor can be a fingerprint sensor, a palm print sensor and the like. And when the ultrasonic biometric sensor is a fingerprint sensor, since the transmitter array 31 and the receiver array 32 are both located within the display area of the OLED panel, and the display area of the OLED panel is generally large, the fingerprint sensor may be configured to simultaneously recognize fingerprints from at least two fingers at this time.

The positions of the transmitter array 31 and the receiver array 32 included in the ultrasonic detection unit 3 are explained below.

Referring to fig. 6A, a plurality of transmitter groups 311 comprised by the transmitter array 31 and a plurality of receiver groups 321 comprised by the receiver array 32 are located on the second surface 12 of the substrate 1; alternatively, the first and second electrodes may be,

referring to fig. 6B, the OLED panel further includes a polarizing layer 4, and a plurality of emitter groups 311 and a plurality of receiver groups 321 are located between the polarizing layer 4 and the OLED pixel array 2; alternatively, the first and second electrodes may be,

referring to fig. 6C, the plurality of emitter groups 311 and the plurality of receiver groups 321 are located at the gaps between the plurality of OLED subpixels 21; alternatively, the first and second electrodes may be,

referring to fig. 6D, a plurality of emitter groups 311 and a plurality of receiver groups 321 are positioned on the black matrix between the plurality of OLED subpixels 21.

The polarizing layer 4 is used to reduce the reflected light of the OLED panel, enhance the visibility of the picture displayed by the OLED panel, and improve the display contrast.

In addition, when the plurality of emitter sets 311 and the plurality of receiver sets 321 are located between the polarizing layer 4 and the OLED pixel array 2, the plurality of emitter sets 311 and the plurality of receiver sets 321 may be added separately, or may replace an original protection layer between the polarizing layer 4 and the OLED pixel array 2, where the protection layer is used to prevent impurities such as water and oxygen from causing oxidation of the OLED pixel array 2.

It should be noted that, when the plurality of emitter groups 311 and the plurality of receiver groups 321 are located at the gaps between the plurality of OLED sub-pixels 21, the plurality of emitter groups 311 and the plurality of receiver groups 321 may be added individually, or may replace the original black matrix at the gaps between the plurality of OLED sub-pixels 21, where the black matrix is used to prevent the leakage of the background light and improve the display contrast.

In addition, when the plurality of emitter groups 311 and the plurality of receiver groups 321 are disposed on the black matrix between the plurality of OLED sub-pixels 21, the plurality of emitter groups 311 and the plurality of receiver groups 321 may be added individually or disposed in an original protective layer on the black matrix, i.e., an original protective layer between the polarizing layer 4 and the OLED pixel array 2.

In the disclosed embodiment, the OLED panel comprises a substrate, an OLED pixel array and an ultrasonic detection unit. Because the transmitter array and the receiver array that ultrasonic detection unit includes all are located the display area of this OLED panel, consequently, the terminal of installing this OLED panel is when carrying out the discernment of hand lines such as fingerprint, palm line, need not to increase extra physical button on this OLED panel and discern, but can directly discern through transmitter array and the receiver array that is located the display area of this OLED panel, thereby can avoid the extra occupation of physical button to this OLED panel, increase the area that the screen occupies on this OLED panel, and then increased the screen ratio of occupying at terminal, the display performance at terminal has been improved.

Fig. 7 is a flowchart illustrating a fingerprint recognition method according to an exemplary embodiment, which is applied to a terminal mounted with the OLED panel shown in any one of fig. 1 to 6D. Referring to fig. 7, the method includes the following steps.

In step 701, when a touch operation for fingerprint recognition is detected, an ultrasonic wave is transmitted by a plurality of transmitters in an ultrasonic wave detection unit, and a reflected wave of the ultrasonic wave is detected by a plurality of receivers in the ultrasonic wave detection unit.

When a touch operation for fingerprint recognition is detected, it indicates that the user's finger is approaching the OLED panel, so fingerprint recognition can be performed by the ultrasonic detection unit at this time.

In step 702, a fingerprint image is determined based on the times at which the plurality of receivers detected the reflected wave and the intensity of the reflected wave.

Since the time for the finger and the air between the finger and the OLED panel to reflect the ultrasonic waves are different, and the ultrasonic waves form reflected waves with different intensities after being reflected at the ridges and valleys of the finger fingerprint, the ridge position and the valley position in the fingerprint image can be determined based on the time for the plurality of receivers to detect the reflected waves and the intensity of the reflected waves. After the ridge line position and the valley line position in the fingerprint image are determined, the fingerprint image is obtained.

Wherein, when determining the fingerprint image based on the time at which the plurality of receivers detect the reflected wave and the intensity of the reflected wave, a target reflected wave may be determined from the reflected wave detected by the receiver for each of the plurality of receivers, the time at which the receiver detects the target reflected wave being within a preset time period; when the intensity of the target reflected wave is within a first preset intensity range, determining that the position of the receiver corresponds to the position of a ridge line in the fingerprint image; and when the intensity of the target reflected wave is within a second preset intensity range, determining that the position of the receiver corresponds to the position of the valley line in the fingerprint image.

It should be noted that the preset time period, the first preset intensity range, and the second preset intensity range may be preset, which is not limited in the embodiment of the present disclosure.

In addition, when the time when the receiver detects the target reflected wave is within the preset time period, it indicates that the target reflected wave is a reflected wave formed after the reflection of the ultrasonic wave by the finger, and thus, the ridge line position and the valley line position in the fingerprint image can be determined based on the intensity of the target reflected wave at this time.

Furthermore, when the intensity of the target reflected wave is within the first preset intensity range, which indicates that the target reflected wave is formed after reflection of the ridge line of the finger fingerprint on the ultrasonic wave, the position of the receiver may be corresponding to the position of the ridge line in the fingerprint image. And when the intensity of the target reflected wave is within the second preset intensity range, the target reflected wave is formed after the valley line of the finger fingerprint reflects the ultrasonic wave, and at this time, the position of the receiver can be corresponding to the valley line position in the fingerprint image.

In the embodiment of the present disclosure, when the terminal detects a touch operation for fingerprint recognition, an ultrasonic wave may be transmitted through a plurality of transmitters in an ultrasonic wave detection unit included in the mounted OLED panel, and a reflected wave of the ultrasonic wave may be detected through a plurality of receivers in the ultrasonic wave detection unit. Thereafter, a fingerprint image may be determined based on the times at which the plurality of receivers detected the reflected wave and the intensity of the reflected wave. According to the terminal, additional physical keys do not need to be added on the OLED panel, fingerprint identification can be carried out only through the plurality of transmitters and the plurality of receivers which are located in the display area of the OLED panel, so that additional occupation of the physical keys on the OLED panel can be avoided, the occupied area of a screen on the OLED panel is increased, the screen occupation ratio of the terminal is increased, and the display performance of the terminal is improved.

Fig. 8 is a block diagram illustrating a fingerprint recognition device according to an exemplary embodiment, which is mounted with the OLED panel shown in any one of fig. 1 to 6D described above. Referring to fig. 8, the apparatus includes a transmitting and receiving module 801 and a determining module 802.

A transmitting and receiving module 801 for transmitting ultrasonic waves through a plurality of transmitters in an ultrasonic detection unit and detecting reflected waves of the ultrasonic waves through a plurality of receivers in the ultrasonic detection unit when a touch operation for fingerprint recognition is detected;

a determining module 802 for determining a fingerprint image based on the times at which the plurality of receivers detected the reflected wave and the intensity of the reflected wave.

Optionally, the determining module 802 includes:

a first determining sub-module for determining, for each of the plurality of receivers, a target reflected wave from the reflected waves detected by the receiver, the receiver detecting the target reflected wave at a time within a preset time period;

the second determining submodule is used for determining that the position of the receiver corresponds to the position of the ridge line in the fingerprint image when the intensity of the target reflected wave is within the first preset intensity range;

and the third determining submodule is used for determining that the position of the receiver corresponds to the valley line position in the fingerprint image when the intensity of the target reflected wave is within a second preset intensity range.

With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.

Fig. 9 is a block diagram illustrating a fingerprint recognition device 900 according to an exemplary embodiment, the device 900 being equipped with the OLED panel shown in any one of fig. 1-6D. For example, the apparatus 900 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.

Referring to fig. 9, apparatus 900 may include one or more of the following components: processing component 902, memory 904, power component 906, multimedia component 908, audio component 910, input/output (I/O) interface 912, sensor component 914, and communication component 916.

The processing component 902 generally controls overall operation of the device 900, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. Processing component 902 may include one or more processors 920 to execute instructions to perform all or a portion of the steps of the methods described above. Further, processing component 902 can include one or more modules that facilitate interaction between processing component 902 and other components. For example, the processing component 902 can include a multimedia module to facilitate interaction between the multimedia component 908 and the processing component 902.

The memory 904 is configured to store various types of data to support operation at the apparatus 900. Examples of such data include instructions for any application or method operating on device 900, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 904 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

The power supply component 906 provides power to the various components of the device 900. The power components 906 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power supplies for the device 900.

The multimedia component 908 comprises a screen providing an output interface between the device 900 and a user. In some embodiments, the screen may include a Liquid Crystal Display (LCD) and a Touch Panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 908 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the device 900 is in an operating mode, such as a shooting mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.

The audio component 910 is configured to output and/or input audio signals. For example, audio component 910 includes a Microphone (MIC) configured to receive external audio signals when apparatus 900 is in an operating mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 904 or transmitted via the communication component 916. In some embodiments, audio component 910 also includes a speaker for outputting audio signals.

I/O interface 912 provides an interface between processing component 902 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor component 914 includes one or more sensors for providing status assessment of various aspects of the apparatus 900. For example, sensor assembly 914 may detect an open/closed state of device 900, the relative positioning of components, such as a display and keypad of device 900, the change in position of device 900 or a component of device 900, the presence or absence of user contact with device 900, the orientation or acceleration/deceleration of device 900, and the change in temperature of device 900. The sensor assembly 914 may include a proximity sensor configured to detect the presence of a nearby object in the absence of any physical contact. The sensor assembly 914 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 914 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 916 is configured to facilitate communications between the apparatus 900 and other devices in a wired or wireless manner. The apparatus 900 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 916 receives a broadcast signal or broadcast associated information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 916 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the apparatus 900 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors or other electronic components for performing the above-described methods.

In an exemplary embodiment, a non-transitory computer readable storage medium comprising instructions, such as the memory 904 comprising instructions, executable by the processor 920 of the apparatus 900 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

A non-transitory computer readable storage medium, wherein instructions, when executed by a processor of a terminal, enable the terminal to perform the fingerprint identification method provided by the embodiment of fig. 7 described above.

Other embodiments of the invention will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the invention being indicated by the following claims.

It will be understood that the invention is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the invention is limited only by the appended claims.

Claims

1. An Organic Light Emitting Diode (OLED) panel, comprising:

a substrate having a first surface and a second surface opposite the first surface; and the number of the first and second groups,

wherein the transmitter array comprises a plurality of transmitter groups, each transmitter group comprising at least one transmitter for transmitting ultrasound waves; the receiver array comprises a plurality of receiver groups, each receiver group comprising at least one receiver for converting received ultrasonic waves into electrical signals; the plurality of transmitter groups and the plurality of receiver groups are arranged at the same layer and interval;

wherein the plurality of emitter groups and the plurality of receiver groups are located at gaps between the plurality of OLED subpixels, and the plurality of emitter groups and the plurality of receiver groups replace an original black matrix at the gaps between the plurality of OLED subpixels.

2. The OLED panel of claim 1, wherein the plurality of emitter groups and the plurality of receiver groups are located at gaps between the plurality of OLED subpixels.

3. The OLED panel of claim 1 or 2, wherein the ultrasonic detection unit is configured to form part of a detection circuit for an ultrasonic biometric sensor.

4. The OLED panel of claim 3, wherein the ultrasonic biometric sensor is a fingerprint sensor.

5. The OLED panel of claim 4, wherein the fingerprint sensor is configured to recognize fingerprints from at least two fingers simultaneously.

6. The OLED panel of claim 3, wherein said ultrasonic biometric sensor is a palm print sensor.

7. The OLED panel of claim 1 or 2, wherein at least one of said at least one emitter and said at least one receiver is made of a piezoelectric material.