CN110717364A - Glass cover plate, terminal, fingerprint identification method and device and storage medium - Google Patents
Glass cover plate, terminal, fingerprint identification method and device and storage medium Download PDFInfo
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- CN110717364A CN110717364A CN201810770727.6A CN201810770727A CN110717364A CN 110717364 A CN110717364 A CN 110717364A CN 201810770727 A CN201810770727 A CN 201810770727A CN 110717364 A CN110717364 A CN 110717364A
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- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
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Abstract
The invention provides a glass cover plate, a terminal, a fingerprint identification method, a fingerprint identification device and a storage medium. The receiving unit comprises a photoelectric sensing unit sensitive to photoelectric effect and a current transmission circuit with one end connected to the photoelectric sensing unit; the other end of the current transmission circuit is connected with the signal processing module of the terminal so as to transmit the current of the photoelectric sensing unit to the signal processing module for processing. Therefore, when the terminal provided with the glass cover plate is used, current can be generated through the photoelectric effect of the photoelectric sensing units, and then the fingerprint can be calculated according to the current generated by each photoelectric sensing unit to realize the identification of the fingerprint under the screen. The method and the device can effectively realize the identification of the fingerprint under the screen, and the structure and the realization method are different from the related structure and method for realizing the identification of the fingerprint under the screen, thereby having development.
Description
Technical Field
The present disclosure relates to, but not limited to, the field of terminal technologies, and in particular, to, but not limited to, a glass cover plate, a terminal, a fingerprint identification method, an apparatus, and a storage medium.
Background
With the continuous development of intelligent terminals, fingerprint identification technology has become the standard matching technology of intelligent terminals. Terminal products capable of performing fingerprint identification under a screen are already available in the market at present. For these terminal products, it mainly realizes fingerprint discernment under the screen based on following two kinds of technical schemes: 1. the optical fingerprint identification technology comprises the following steps: the principle that the light rays are reflected on uneven lines on the surface of the finger to generate refraction and reflection and the returned light rays are different in brightness is utilized, an optical sensor is arranged around or below a light-emitting structure of the terminal to receive the reflected light, and a digitized gray fingerprint image is obtained through an image sensing device, so that fingerprint identification is realized. 2. The ultrasonic fingerprint identification technology comprises the following steps: through set up ultrasonic sensor in the display screen below, utilize the ultrasonic wave to pierce through the ability of material, distinguish the position at fingerprint ridge and valley line place according to the echo difference that arrives the surperficial production of different materials, and then realize discerning the fingerprint.
Disclosure of Invention
The embodiment of the disclosure provides a glass cover plate, a terminal, a fingerprint identification method, a fingerprint identification device and a storage medium, and mainly solves the technical problems that: a novel structure and method for realizing fingerprint identification under a screen are provided.
In order to solve the above technical problem, the present disclosure provides a glass cover plate, including: the glass cover plate comprises a glass cover plate body and a plurality of receiving units arranged on the glass cover plate body; the size of each receiving unit is matched with the size of a fingerprint ridge line and a fingerprint valley line;
the receiving unit comprises a photoelectric sensing unit sensitive to photoelectric effect and a current transmission circuit with one end connected to the photoelectric sensing unit; the other end of the current transmission circuit is used for being connected with a signal processing module of a terminal so as to transmit the current signal of the photoelectric sensing unit to the signal processing module for processing.
In addition, the embodiment of the disclosure also provides a terminal, which comprises a display screen and a signal processing module; the display screen comprises the glass cover plate; and the photoelectric sensing unit in the glass cover plate is connected with the signal processing module through a current transmission circuit.
The embodiment of the present disclosure further provides a fingerprint identification method applied to the terminal, including:
when touch operation acting on a display screen is detected, controlling a display panel of the display screen to emit light;
receiving current signals generated by each photoelectric sensing unit; the photoelectric sensing unit is arranged on a glass cover plate of the display screen; the photoelectric sensing unit receives reflected light of light emitted by the display panel and then triggers a photoelectric effect to generate the current signal;
and calculating a fingerprint corresponding to the touch operation according to the current signal generated by each photoelectric sensing unit and the position information of each photoelectric sensing unit.
The embodiment of the present disclosure further provides a fingerprint identification device, including:
the control module is used for controlling a display panel of the display screen to emit light when touch operation acting on the display screen is detected;
the receiving module is used for receiving the current signals generated by the photoelectric sensing units; the photoelectric sensing unit is arranged on a glass cover plate of the display screen; the photoelectric sensing unit receives reflected light of light emitted by the display panel and then triggers a photoelectric effect to generate the current signal;
and the fingerprint calculation module is used for calculating a fingerprint corresponding to the touch operation according to the current signals generated by the photoelectric sensing units and the position information of the photoelectric sensing units.
The embodiment of the present disclosure also provides a storage medium, in which computer-executable instructions are stored, where the computer-executable instructions are used to execute the foregoing fingerprint identification method.
The beneficial effects of this disclosure are:
according to the glass cover plate, the terminal, the fingerprint identification method and device and the storage medium provided by the embodiment of the disclosure, the plurality of receiving units are arranged on the glass cover plate body of the glass cover plate, each receiving unit is small, and the size of each receiving unit is matched with the size of the fingerprint ridge line and the fingerprint valley line. The receiving unit comprises a photoelectric sensing unit sensitive to photoelectric effect and a current transmission circuit with one end connected to the photoelectric sensing unit; the other end of the current transmission circuit is used for being connected with a signal processing module of the terminal so as to transmit the current signal of the photoelectric sensing unit to the signal processing module for processing. Like this, when using the terminal that is provided with this kind of glass apron, the terminal is when detecting the touch operation that acts on the display screen, can control the display panel of display screen luminous, and then the touch thing (like the finger) can cause the reflection of light promptly, when the reverberation shines on the photoelectric sensing unit, the photoelectric sensing unit triggers photoelectric effect promptly and produces the current signal, and then the signal processing module of terminal can be according to the produced current signal of each photoelectric sensing unit, and the positional information of each photoelectric sensing unit, calculate the fingerprint that corresponds with touch operation, realize fingerprint discernment under the screen. The glass cover plate, the terminal, the fingerprint identification method, the fingerprint identification device and the storage medium can effectively realize the identification of the fingerprint under the screen, and meanwhile, the structure and the implementation method are different from the related structure and method for realizing the identification of the fingerprint under the screen, and have pioneering property.
Drawings
Fig. 1 is a schematic structural diagram of a glass cover plate according to a first embodiment of the present disclosure;
fig. 2 is a schematic diagram of a receiving unit according to a first embodiment of the disclosure;
fig. 3 is a schematic view illustrating an arrangement of a photoelectric sensing unit according to a first embodiment of the disclosure;
fig. 4 is a schematic structural diagram of a terminal according to a first embodiment of the disclosure;
fig. 5 is a schematic basic flowchart of a fingerprint identification method according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of an OLED display panel according to a first embodiment of the disclosure;
fig. 7 is a schematic structural diagram of a terminal according to a second embodiment of the disclosure;
fig. 8 is a more specific flowchart of fingerprint identification according to the second embodiment of the present disclosure;
fig. 9 is a schematic structural diagram of a fingerprint identification device according to a third embodiment of the present disclosure.
Detailed Description
Various embodiments of the disclosed concept will now be described in more detail with reference to the accompanying drawings. The disclosed concept may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosed concept to those skilled in the art. Throughout the above description and drawings, the same reference numbers and designations represent the same or similar elements.
It will be understood that, although the terms first, second, etc. may be used herein to describe various elements or operations, these elements or operations should not be limited by these terms. These terms are only used to distinguish one element or operation from another. For example, a first receiving unit may be referred to as a second receiving unit, and similarly, a second receiving unit may be referred to as a first receiving unit without departing from the teachings of the present disclosure.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosed concept. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, regions, portions, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, regions, portions, steps, operations, elements, components, and/or groups thereof.
Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and/or the present disclosure, and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The embodiments of the present disclosure will be described in further detail below with reference to the accompanying drawings.
The first embodiment is as follows:
referring to fig. 1, fig. 1 is a schematic structural diagram of a glass cover plate in a display screen according to an embodiment of the present disclosure, including: a glass cover plate body 11, and a plurality of receiving units 12 disposed on the glass cover plate body 11. Wherein, see fig. 2:
the receiving units 12 each include a photoelectric sensing unit 121 and a current transmission circuit 122. It should be noted that, in the present embodiment, the photo-sensing unit 121 should be sensitive to the photoelectric effect, that is, when receiving light of a corresponding frequency band, electrons may overflow to generate current. In this embodiment, the photoelectric sensing unit 121 may be a metal wire, such as a rubidium metal wire, a potassium metal wire, a sodium-potassium alloy metal wire, a sodium metal wire, a lithium metal wire, a magnesium metal wire, a thallium metal wire, a zinc metal wire, a selenium wire, or the like, or may be a wire structure formed of a nonmetal element and having a good photoelectric effect.
In practical applications, the light generated by the display screen of the terminal is visible light, so that in order to control whether the photoelectric effect needs to be triggered, it may be set that when an object is detected to touch the display screen, the display screen is controlled to emit light to trigger the photoelectric sensing unit 121 to generate the photoelectric effect. It should be noted that, for the display screen, the display screen substantially includes a display panel and a glass cover plate. The glass cover plate covers the display panel and is directly contacted with the outside of the terminal to protect the display panel. For the display panel, it is a main component of the terminal for realizing the image display, and can emit light, and emit light of different colors according to the image requirements to form the image to be displayed.
It is to be noted that, in an embodiment of the present embodiment, a metal wire capable of generating a photoelectric effect in a visible light frequency range may be selected as the photoelectric sensing unit 121, so that the terminal is suitable for practical use, and a device capable of emitting light outside the visible light frequency range is not required to be additionally disposed. For example, if a wire capable of generating a photoelectric effect in an ultraviolet frequency range is selected as the photoelectric sensing unit 121, an ultraviolet emitter is additionally disposed on the terminal, which increases the cost, and in addition, the long-term irradiation of light outside the visible frequency range, such as ultraviolet light, may also have an adverse effect on the human body.
It should be particularly noted that the size of each receiving unit in this embodiment is matched with the size of the fingerprint ridges and fingerprint valleys. Specifically, the size of the photoelectric sensing unit in the size of each receiving unit should be smaller than or equal to the size of the fingerprint ridge line and the fingerprint valley line.
It should be understood that, because the receiving unit is disposed on the glass cover plate, display occlusion may be caused theoretically, and display effect may be affected. As for human eyes, only objects with a diameter exceeding 100 micrometers can be effectively recognized, so in a specific implementation manner of this embodiment, the diameter of the wire serving as the photoelectric sensing unit may be set to be smaller than 100 micrometers, for example, the diameter of the wire may be set to be 100 nanometers or the like (it should be noted that, for normal people, the width of the fingerprint ridge and the fingerprint valley in the finger of a person is usually about a few tenths of millimeters to one millimeter, and is greater than 100 micrometers).
It should also be understood that, in order to ensure the display effect, on the basis that a single metal wire is small enough and invisible, the distance between adjacent metal wires should also be large enough, so as to ensure the display effect when the display panel performs the picture display. In particular, the distance between two adjacent wires in this embodiment should be larger (even much larger) than the diameter of each wire. For example, when the diameter of the metal wire as the photoelectric sensing unit is smaller than 100 micrometers, the distance between two adjacent metal wires may be set to be larger than 100 micrometers in this embodiment. For example, the diameter of the metal wire is set to 50 nm, and the distance between two adjacent metal wires is set to 200 μm.
It should be noted that the metal wire is provided in the embodiment to receive the light reflected from the fingerprint ridges or fingerprint valleys so as to generate corresponding current, and the terminal can restore the fingerprint ridges or fingerprint valleys according to the current. This requires that each wire receives as little light as possible from the ridges or valleys of the fingerprint when the user's finger touches the display screen, and preferably receives light reflected from only one ridge or valley of the fingerprint, so that the current generated by one wire is affected by less ridges or valleys of the fingerprint, and the recovered fingerprint information is more accurate. Particularly, when the light received by each wire is the reflected light from only one fingerprint ridge and/or one fingerprint valley, that is, the current generated by each wire is only influenced by one fingerprint ridge and/or one fingerprint valley, and the fingerprint information obtained by processing the terminal according to the current generated by each wire is more accurate. In order to ensure that the current generated by each wire is only affected by one fingerprint ridge and/or one fingerprint valley, in an embodiment of the present invention, the length of the wire may be less than or equal to the width of the fingerprint ridge and the fingerprint valley. For example, the length of the metal wire may be set to be less than or equal to 100 micrometers, so that the metal wire is an extremely tiny metal cylinder, and the metal cylinders may be uniformly arranged on the glass panel in a grid or matrix form, for example, in fig. 1, the metal cylinder is uniformly arranged in a matrix form.
In this embodiment, the current transmission circuit 122 is used for transmitting the current generated by the photo sensing unit 121 to a signal processing module in the terminal for processing, so as to recover the fingerprint. Therefore, in the present embodiment, one end of the current transmission circuit 122 is connected to the photo sensor unit 121, and the other end of the current transmission circuit 122 is connected to the signal processing module of the terminal, so as to transmit the current signal of the photo sensor unit to the signal processing module for processing.
It should be understood that the current transmission circuit 122 may be implemented with a wire, such as a copper wire. It should also be understood that the current transmission circuit 122 may also be attached to the glass cover plate, and the wires may be routed in the gaps between the photoelectric sensing units, or may also be not attached to the glass cover plate, but routed under the glass cover plate, so as to increase the transmission space of the light emitted by the display panel.
It should be noted that, in the present embodiment, in order to ensure the display effect of the terminal, the current transmission circuit 122 should be small enough to be invisible to ensure the final display effect. In a specific implementation manner of this embodiment, the diameter of the current transmission circuit may be set to be smaller than 100 micrometers, so that the current transmission circuit does not affect the display effect.
In this embodiment, referring to fig. 3, the side of the photo sensor units 121 facing the display panel in the display screen may be covered with the light-shielding coating 31, and the side facing the outside of the terminal is not coated with the light-shielding coating, so that when the display panel emits light, only those photo sensor units that receive the reflected light will generate current, and those photo sensor units that do not receive the reflected light will not generate current, thereby reducing the throughput of the signal processing module 32, and improving the processing accuracy (it should be understood that, when the light-shielding coating is not coated, all the photo sensor units in the photo sensor units will generate current, and only those photo sensor units that receive the reflected light will generate stronger current, which makes the signal processing module need to process more current data and screen out the current generated by those photo sensor units that receive the reflected light, wasting processing resources and potentially having large processing errors).
In this embodiment, each receiving unit may be specifically disposed on the outer contact surface of the glass cover body. The outer contact surface is a surface which can be directly touched by a user in the glass cover plate. But at the moment, because the receiving unit is arranged, the touch feeling of a user is not smooth and has concave-convex feeling when the user touches the touch screen; in addition, the receiving unit can be directly contacted by an external object, the photoelectric sensitivity of the photoelectric sensing unit in the receiving unit can be influenced, and the service life of the receiving unit is shortened. In this embodiment, each receiving unit may be provided in the glass cover body, that is, the receiving unit may be embedded in the glass cover body, but this method requires a process which is much higher than the method of providing the receiving unit on one surface of the glass cover body, and thus is costly. In summary, in an embodiment of the present invention, each receiving unit may be specifically disposed on the protection surface of the glass cover body. It should be understood that the protective surface is the surface of the glass cover plate facing the display panel in the display screen. Therefore, the requirement of the setting process of the receiving unit is lower than that of embedding the receiving unit in the glass cover plate body, the cost is saved, and in addition, the receiving unit is not influenced by external objects because the receiving unit is arranged on the protection surface of the glass cover plate body, so that the service life of the receiving unit is ensured.
The embodiment further provides a terminal, which is shown in fig. 4 and includes a display screen 40 and a signal processing module 41. It should be understood that the display screen 40 should include a glass cover plate with the above structure, wherein the photoelectric sensing unit 121 in the glass cover plate is connected to the signal processing module 41 through the current transmission circuit 122.
The embodiment further provides a fingerprint identification method, which can be applied to the terminal, and specifically, as shown in fig. 5, the fingerprint identification method includes:
s501: when the touch operation acting on the display screen is detected, controlling the display panel of the display screen to emit light;
it should be understood that, in the present embodiment, the display panel light emission should cover at least the touch position of the touch operation. Therefore, the display panel can emit light in the full screen or in a partial area. For example, referring to a schematic structural diagram of an OLED (organic light-Emitting Diode) display panel shown in fig. 6, the OLED display panel is composed of a plurality of light-Emitting units 61, the light-Emitting units 61 are uniformly distributed at various positions of the OLED display panel, each light-Emitting unit can independently complete the brightness and color display of the area where the light-Emitting unit is located, and all the light-Emitting units complete the image display of the whole screen area together, so that the light-Emitting units at different positions are controlled to emit light to control part or all of the areas to emit light.
In this embodiment, if the partial region of the display panel is controlled to emit light, the region corresponding to the touch position of the touch operation in the display panel of the display screen may be controlled to emit light, so that the light emitting region is ensured to be sufficient, and the power consumption is reduced.
It should also be understood that, for the detection of the touch operation, the detection may be performed by an existing manner of detecting the touch operation, for example, when the display screen is a capacitive screen, the capacitance is changed by the touch of the user, and therefore, when the capacitance is changed, it is determined that the touch operation is detected. In addition, the specific position corresponding to the touch operation in the display screen can also be determined by the existing determination method, which is not described too much here.
S502: receiving current signals generated by each photoelectric sensing unit;
it should be understood that the photoelectric sensing units are disposed on the glass cover plate of the display screen, after the display panel emits light, a finger of a user on the display screen reflects the light emitted by the display panel, and after the reflected light is received by the photoelectric sensing units, the photoelectric sensing units receiving the reflected light trigger a photoelectric effect to generate a current signal. And the current signals are transmitted to the signal processing module through the current transmission circuit connected with each photoelectric sensing unit.
It should be noted that, in the present embodiment, the signal processing module may be a separate signal processing circuit or chip, but may also be a processor.
S503: and calculating the fingerprint corresponding to the touch operation according to the current signal generated by each photoelectric sensing unit and the position information of each photoelectric sensing unit.
The fingerprint ridges and valleys of the corresponding position of the current can be restored according to the current signals generated by the photoelectric sensing units, the calculated positions of the ridges and valleys of the fingerprint can be determined by combining the position information of the photoelectric sensing units, and the fingerprints corresponding to the touch operation can be obtained by combining the calculated positions.
It should be understood that, after the fingerprint corresponding to the touch operation is calculated, the terminal may match the calculated fingerprint with a pre-stored fingerprint template, and if the calculated fingerprint is matched, a next operation, such as unlocking the screen, may be performed. If not, the user can be prompted that the fingerprint input is wrong and needs to be input again.
According to the glass cover plate, the terminal with the glass cover plate and the fingerprint identification method applied to the terminal, the photoelectric sensing units are arranged on the glass cover plate, reflected light generated when a user touches the glass cover plate is utilized to enable the photoelectric sensing units to trigger a photoelectric effect to generate current, and then finger fingerprints when the user touches the glass cover plate are calculated according to the generated current and the positions of the photoelectric sensing units generating the current, so that the identification of finger fingerprints under a screen is effectively realized, and a new display identification mode is provided for the identification of the finger fingerprints under the screen.
In addition, since in the existing optical fingerprint recognition technology, an optical sensor needs to be disposed around or under the light emitting structure of the terminal to receive the reflected light, the display pixels may be enlarged; in the existing ultrasonic fingerprint identification technology, an ultrasonic sensor needs to be additionally arranged, so that the problems of high power consumption and high cost exist. The photoelectric sensing unit can be metal wires with the diameter and the length smaller than 100 micrometers, and the metal wires are invisible to naked eyes, so that the final display effect is hardly influenced, the display pixels are not increased, the power consumption is not increased, and the cost is lower.
Example two:
the embodiment further illustrates the scheme of the present disclosure through a more specific terminal structure and fingerprint identification process on the basis of the first embodiment.
Referring to fig. 7, the terminal includes an OLED display panel 71, a glass cover plate 72, a signal processing module 73, and a baseband processing module 74. The OLED display panel 71 is connected to the baseband processing module 74, and the receiving unit of the glass cover plate 72 is connected to the signal processing module 73.
Wherein:
the OLED display panel 71 may emit visible light under the control of the baseband processing module 74. The OLED display panel is composed of a plurality of light-emitting units, the light-emitting units are uniformly distributed at all positions of the OLED display panel, each light-emitting unit can independently complete the brightness and color display of the area where the light-emitting unit is located, and all the light-emitting units jointly complete the image display of the whole screen area.
The structure of the glass cover plate 72 can be seen from fig. 1, tens of thousands of receiving units are placed in a certain area or all areas, and the receiving units are uniformly arranged in a grid or matrix shape; a metal wire which is sensitive to photoelectric effect and invisible to human eyes is placed in the receiving unit, and photoelectrons can overflow from the metal wire under the action of irradiating light to form current; the metal wire in the receiving unit faces one side of the OLED light-emitting unit and is covered with the shading coating, so that the phenomenon that light emitted by the OLED light-emitting unit directly irradiates the metal wire to generate current can be avoided, the metal wire faces one side of the finger touch area, and the surface of the metal wire is exposed and used for receiving reflected light.
The signal processing module 73 is connected to all the receiving units, and can detect and receive current information sent by all the receiving units, and give out the calculation of ridge and valley areas of the fingerprint by combining the physical positions of all the receiving units, and finally match the calculation conclusion with a user fingerprint template prestored in the module, and give out the judgment whether the fingerprint is the user fingerprint.
The baseband processing module 74 can receive the fingerprint identification information transmitted by the signal processing module 73 and give the next operation according to the information.
For example, as shown in fig. 3, when light irradiates the surface of the metal wire, electrons on the surface of the metal wire absorb external photons, and escape by overcoming the constraint of the metal, thereby generating current, which is the photoelectric effect. It should be understood that the greater the intensity of the incident light per unit time, the greater the number of photons passing through the surface of the metal wire, the greater the number of photoelectrons that fly out, and the stronger the current. The minimum optical frequency required for different metals to generate photoelectric effect is different, and the metal wire adopted in the embodiment can generate photoelectric effect in the visible light frequency range.
Meanwhile, the metal wire is small in diameter (smaller than 100 micrometers, even nanoscale in diameter) and invisible to human eyes, the metal wire faces one side of the OLED display panel and is covered with a shading coating, so that the phenomenon that light emitted by a light emitting unit of the OLED display panel directly irradiates the metal wire to generate current is avoided, the metal wire faces one side of a finger touch area, and the surface of the metal wire is exposed and used for receiving reflected light.
In addition, referring to fig. 8, fig. 8 is a more specific schematic diagram of a fingerprint identification process provided in this embodiment, including:
s801: when the fact that a user touches the display screen through a finger is detected, the baseband processing module controls a light emitting unit of the OLED display panel to emit visible light;
it should be understood that the light emitting area should cover the contact area of the finger.
S802: the metal wire receives the reflected light and generates current under the photoelectric effect;
it should be understood that the light emitted from the light emitting unit is reflected by the finger, and the reflected light is irradiated on the metal wire of the receiving unit in the glass cover plate, and the metal wire generates current under the photoelectric effect.
Specifically, light rays penetrate through the glass cover plate and are emitted to the finger area, uneven reflection can be generated on the light rays due to the fact that the surface of the finger is concave-convex, and the reflected light rays irradiate the metal wire in the receiving unit after entering the glass cover plate. Wherein: when the fingerprint ridge line is in contact with the screen, a flat area is formed, the intensity of light reflected into the glass cover plate by the area is high and uniform, so that the number of photons received by a receiving unit in the glass cover plate below the area is large, and the current generated by the metal wire is strong; when the fingerprint valley line is contacted with the screen, a section of sunken area is formed, the intensity of light reflected to the glass cover plate by the area is small and uneven, so that the quantity of photons received by the receiving unit in the glass cover plate below the area is small, the current generated by the metal wire is weak, and even the current cannot be generated. And according to the principle, the signal processing module can perform reduction calculation of the fingerprint subsequently according to the current of each metal wire.
S803: the signal processing module detects current information sent by all receiving units, calculates ridge and valley areas of the fingerprint by combining the physical positions of all the receiving units, finally matches a calculation conclusion with a user fingerprint template prestored in the module and judges whether the identification is successful or not;
s804: the baseband processing module receives the result information of fingerprint identification transmitted by the signal processing module and gives the next operation according to the result information.
Specifically, when the baseband processing module receives the information that the fingerprint identification is successful, the baseband processing module may execute operations such as screen unlocking, and the process is ended. When the baseband processing module receives the information of fingerprint identification failure, the baseband processing module may notify the user of the unlocking failure, please retry with the correct finger, and return to step 101.
According to the terminal and the process provided by the embodiment, it can be seen that the terminal and the fingerprint identification method provided by the embodiment of the disclosure have at least the following advantages:
in the existing optical fingerprint identification technology, an optical sensor needs to be arranged around or below a light-emitting structure of a terminal to receive reflected light, so that display pixels are increased; in the existing ultrasonic fingerprint identification technology, an ultrasonic sensor needs to be additionally arranged, so that the problems of high power consumption and high cost exist. And through setting up the wire on glass cover plate in this embodiment, produced reverberation makes the wire trigger photoelectric effect to produce the electric current when utilizing the user to touch, and then calculate the finger fingerprint when obtaining the user to touch according to the position of produced electric current and each wire that produces the electric current, the discernment of finger print under the screen has effectively been realized, the finger print discernment provides a new mode of demonstration discernment under the screen, simultaneously because the wire naked eye is invisible, make when not increasing display pixel, also can make ultimate display effect be influenced hardly, simultaneously owing to need not additionally to set up ultrasonic sensor, power consumption can not increase, in addition the cost is also lower.
Example three:
the present embodiment provides a fingerprint identification apparatus based on the first embodiment. Referring to fig. 9, fig. 9 is a fingerprint identification device 9 provided in a third embodiment of the present disclosure, including: a control module 91, a receiving module 92 and a fingerprint calculation module 93. Wherein:
the control module 91 is used for controlling a display panel of the display screen to emit light when the touch operation acted on the display screen is detected;
a receiving module 92, configured to receive current signals generated by each photoelectric sensing unit;
it should be noted that, the arrangement structure of the photoelectric sensing unit can be as shown in fig. 1, that is, the photoelectric sensing unit can be arranged on a glass cover plate of a display screen; the current signal is generated by triggering a photoelectric effect after the photoelectric sensing unit receives the reflected light of the light emitted by the display panel.
The fingerprint calculating module 93 is configured to calculate a fingerprint corresponding to the touch operation according to the current signal generated by each photoelectric sensing unit and the position information of each photoelectric sensing unit.
It should be understood that, in the present embodiment, the display panel light emission should cover at least the touch position of the touch operation. Therefore, the display panel can emit light in the full screen or in a partial area. For example, referring to the schematic structural diagram of the OLED display panel shown in fig. 6, the OLED display panel is composed of a plurality of light emitting units 61, the light emitting units 61 are uniformly distributed at various positions of the OLED display panel, each light emitting unit can independently complete the brightness and color display of the area where the light emitting unit is located, and all the light emitting units complete the image display of the whole screen area together, so that the light emitting units at different positions are controlled to emit light to control part or all of the areas to emit light.
In this embodiment, if the partial region of the display panel is controlled to emit light, the region corresponding to the touch position of the touch operation in the display panel of the display screen may be controlled to emit light, so that the light emitting region is ensured to be sufficient, and the power consumption is reduced.
It should be understood that, after the fingerprint calculation module 93 calculates the fingerprint corresponding to the touch operation, the fingerprint identification device may match the calculated fingerprint with a pre-stored fingerprint template, and if the calculated fingerprint is matched with the pre-stored fingerprint template, a next operation, such as unlocking the screen, may be performed. If not, the user can be prompted that the fingerprint input is wrong and needs to be input again.
According to the fingerprint identification device provided by the embodiment of the disclosure, the photoelectric sensing units are arranged on the glass cover plate, reflected light generated when a user touches the photoelectric sensing units is utilized to trigger the photoelectric effect to generate current, and then the finger fingerprints when the user touches the fingerprint identification device are calculated according to the generated current and the positions of the photoelectric sensing units generating the current, so that the identification of the fingerprints under the screen is effectively realized, and a new display identification mode is provided for the identification of the fingerprints under the screen.
Example four:
the present embodiments provide a storage medium including volatile or non-volatile, removable or non-removable media implemented in any method or technology for storage of information such as computer-readable instructions, data structures, computer program modules or other data. Storage media includes, but is not limited to, RAM (Random Access Memory), ROM (Read-Only Memory), EEPROM (Electrically erasable programmable Read-Only Memory), flash Memory or other Memory technology, CD-ROM (Compact disk Read-Only Memory), Digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer.
The storage medium provided in this embodiment stores computer-executable instructions, which can be executed by one or more processors to implement the steps of the fingerprint identification method described in the first embodiment and/or the second embodiment. And will not be described in detail herein.
It will be apparent to those skilled in the art that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software (which may be implemented in computer program code executable by a computing device), firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed by several physical components in cooperation. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit.
In addition, communication media typically embodies computer readable instructions, data structures, computer program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media as known to one of ordinary skill in the art. Thus, the present invention is not limited to any specific combination of hardware and software.
The foregoing is a more detailed description of embodiments of the present invention, and the present invention is not to be considered limited to such descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (14)
1. A glass cover plate comprising: the glass cover plate comprises a glass cover plate body and a plurality of receiving units arranged on the glass cover plate body; the size of each receiving unit is matched with the size of a fingerprint ridge line and a fingerprint valley line;
the receiving unit comprises a photoelectric sensing unit sensitive to photoelectric effect and a current transmission circuit with one end connected to the photoelectric sensing unit; the other end of the current transmission circuit is used for being connected with a signal processing module of a terminal so as to transmit the current signal of the photoelectric sensing unit to the signal processing module for processing.
2. The glass cover plate of claim 1, wherein the photoelectric sensing unit is a wire.
3. The glass cover plate of claim 2, wherein the wire is a wire that can produce a photoelectric effect in the visible frequency range.
4. The glass cover sheet according to claim 2, wherein the dimensional size of each of the receiving units matching the dimensional size of the fingerprint ridges and fingerprint valleys comprises:
the wire diameter of each of the receiving units is less than 100 microns.
5. The glass cover sheet according to claim 4, wherein the dimensional size of each of the receiving units matching the dimensional size of the fingerprint ridges and fingerprint valleys further comprises:
the length of the metal wire is less than or equal to the width of the fingerprint ridge line and the fingerprint valley line.
6. The glass cover plate of claim 4, wherein the distance between two adjacent wires is greater than 100 μm.
7. The glass cover plate of claim 1, wherein the current carrying circuit has a diameter of less than 100 microns.
8. The glass cover plate of claim 1, wherein each of the receiving units is disposed on a protective surface of the glass cover plate body; the protection surface is the surface of the glass cover plate facing the display panel in the display screen.
9. The glass cover plate of any one of claims 1-8, wherein the photo-sensing unit is covered with a light-blocking coating on a side facing a display panel in the display screen.
10. A terminal, comprising: the display screen and the signal processing module; the display screen comprises the glass cover plate as described in any one of claims 1 to 8; and the photoelectric sensing unit in the glass cover plate is connected with the signal processing module through a current transmission circuit.
11. A fingerprint identification method applied to the terminal according to claim 10, comprising:
when touch operation acting on a display screen is detected, controlling a display panel of the display screen to emit light;
receiving current signals generated by each photoelectric sensing unit; the photoelectric sensing unit is arranged on a glass cover plate of the display screen; the photoelectric sensing unit receives reflected light of light emitted by the display panel and then triggers a photoelectric effect to generate the current signal;
and calculating a fingerprint corresponding to the touch operation according to the current signal generated by each photoelectric sensing unit and the position information of each photoelectric sensing unit.
12. The fingerprint recognition method of claim 11, wherein the controlling the display panel of the display screen to emit light comprises:
and controlling an area corresponding to the touch position of the touch operation to emit light in a display panel of the display screen.
13. A fingerprint recognition device, comprising:
the control module is used for controlling a display panel of the display screen to emit light when touch operation acting on the display screen is detected;
the receiving module is used for receiving the current signals generated by the photoelectric sensing units; the photoelectric sensing unit is arranged on a glass cover plate of the display screen; the photoelectric sensing unit receives reflected light of light emitted by the display panel and then triggers a photoelectric effect to generate the current signal;
and the fingerprint calculation module is used for calculating a fingerprint corresponding to the touch operation according to the current signals generated by the photoelectric sensing units and the position information of the photoelectric sensing units.
14. A storage medium having stored thereon computer-executable instructions for performing the fingerprint identification method of claim 11 or 12.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810770727.6A CN110717364B (en) | 2018-07-13 | 2018-07-13 | Glass cover plate, terminal, fingerprint identification method, fingerprint identification device and storage medium |
| PCT/CN2018/109561 WO2020010732A1 (en) | 2018-07-13 | 2018-10-10 | Glass cover plate, terminal, fingerprint recognition method and apparatus, and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810770727.6A CN110717364B (en) | 2018-07-13 | 2018-07-13 | Glass cover plate, terminal, fingerprint identification method, fingerprint identification device and storage medium |
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| CN110717364A true CN110717364A (en) | 2020-01-21 |
| CN110717364B CN110717364B (en) | 2023-09-22 |
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| CN201810770727.6A Active CN110717364B (en) | 2018-07-13 | 2018-07-13 | Glass cover plate, terminal, fingerprint identification method, fingerprint identification device and storage medium |
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| CN110717364B (en) | 2023-09-22 |
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