CN110781772A - Fingerprint identification module and method, LCD device, terminal and storage medium - Google Patents
Fingerprint identification module and method, LCD device, terminal and storage medium Download PDFInfo
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- CN110781772A CN110781772A CN201910950588.XA CN201910950588A CN110781772A CN 110781772 A CN110781772 A CN 110781772A CN 201910950588 A CN201910950588 A CN 201910950588A CN 110781772 A CN110781772 A CN 110781772A
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- reflected light
- fingerprint identification
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
Abstract
The embodiment of the application discloses fingerprint identification module and method, LCD device, terminal and storage medium, and the fingerprint identification module is applicable to the LCD device, and the fingerprint identification module includes: the photosensitive layer is connected with the external circuit; the photosensitive layer is used for collecting reflected light corresponding to the identification object and converting the reflected light into an electric signal; and the external circuit is used for reading the electric signal and controlling the output of the electric signal so as to obtain the fingerprint information corresponding to the identification object.
Description
Technical Field
The embodiment of the application relates to the technical field of fingerprint identification, in particular to a fingerprint identification module, a fingerprint identification method, an LCD device, a terminal and a storage medium.
Background
Fingerprint identification technology is often applied to display screens of terminals such as mobile phones and tablet computers, and at present, in-screen fingerprint identification is becoming more and more popular due to its easy operability and versatility and its suitability for compact portable electronic devices. Among them, the optical fingerprint recognition under the screen is the most commonly used technical means, and is widely applied to Organic Light-emitting diode (OLED) and Active-matrix Organic Light-emitting diode (AMOLED) screens. Specifically, the terminal utilizes the self-luminous characteristics of the screen pixels to place a sensor on the back of the screen, so that the acquisition and identification of the optical fingerprint under the screen are realized.
However, the optical fingerprint recognition technology under the screen of a Liquid Crystal Display (LCD) device is not mature, so that the fingerprint recognition function of the LCD device is not comprehensive enough, thereby reducing the security and intelligence of the terminal.
Disclosure of Invention
The embodiment of the application provides a fingerprint identification module and method, an LCD device, a terminal and a storage medium, which can perfect the fingerprint identification function of the LCD device, thereby improving the safety and intelligence of the terminal.
The technical scheme of the embodiment of the application is realized as follows:
in a first aspect, an embodiment of the present application provides a fingerprint identification module, the fingerprint identification module is applicable to the LCD device, the fingerprint identification module includes: a photosensitive layer and an external circuit, wherein the photosensitive layer and the external circuit are connected;
the photosensitive layer is used for collecting reflected light corresponding to an identification object and converting the reflected light into an electric signal;
and the external circuit is used for reading the electric signal and controlling the output of the electric signal so as to obtain the fingerprint information corresponding to the identification object.
In a second aspect, an embodiment of the present application provides a fingerprint identification method, where the fingerprint identification method is applied to a fingerprint identification module, and the method includes:
collecting reflected light corresponding to an identification object;
converting the reflected light into an electrical signal corresponding to the reflected light;
and outputting the electric signal to obtain fingerprint information corresponding to the identification object.
In a third aspect, an embodiment of the present application provides an LCD device, including: a fingerprint identification module, a cover plate glass, a touch layer, an LCD screen and a backlight module, wherein the fingerprint identification module comprises a photosensitive layer and an external circuit,
the photosensitive layer is arranged between the cover plate glass and the touch layer;
the LCD screen is arranged on the other side, corresponding to the photosensitive layer, of the touch layer;
the backlight module is arranged on the other side, corresponding to the touch layer, of the LCD screen.
In a fourth aspect, an embodiment of the present application provides a fingerprint identification method, where the fingerprint identification method is applied to a terminal, the terminal is provided with an LCD device, where the LCD device includes a fingerprint identification module, and the method includes:
collecting reflected light corresponding to an identification object through the fingerprint identification module, and obtaining an electric signal corresponding to the reflected light;
determining position information corresponding to the identification object according to the electric signal;
and generating fingerprint information corresponding to the identification object by using the position information and the strength of the electric signal.
In a fifth aspect, an embodiment of the present application provides a terminal, where the terminal includes: a collecting unit, an obtaining unit, a determining unit and a generating unit,
the collecting unit is used for collecting the reflected light corresponding to the identification object through the fingerprint identification module;
the acquisition unit is used for acquiring an electric signal corresponding to the reflected light;
the determining unit is used for determining the position information corresponding to the identification object according to the electric signal;
the generating unit is used for generating fingerprint information corresponding to the identification object by using the position information and the strength of the electric signal.
In a sixth aspect, an embodiment of the present application provides a terminal, where the terminal includes a processor and a memory storing instructions executable by the processor, and when the instructions are executed by the processor, the terminal implements the fingerprint identification method as described above.
In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, on which a program is stored, and the program is applied to a terminal, and when being executed by a processor, the program implements the fingerprint identification method as described above.
The embodiment of the application provides a fingerprint identification module and method, LCD device, terminal and storage medium, and the fingerprint identification module is applicable to the LCD device, and the fingerprint identification module includes: the photosensitive layer is connected with the external circuit; the photosensitive layer is used for collecting reflected light corresponding to the identification object and converting the reflected light into an electric signal; and the external circuit is used for reading the electric signal and controlling the output of the electric signal so as to obtain the fingerprint information corresponding to the identification object. Therefore, in the embodiment of this application, the photosensitive layer of newly-increased fingerprint identification module between LCD device's cover plate glass and the touch-control layer, the fingerprint identification module utilizes the photosensitive layer to receive the reverberation of discernment object reflection, and convert the reverberation into the signal of telecommunication, then utilize the double-deck electrically conductive photosensitive material that photosensitive layer set up to transmit the signal of telecommunication to external circuit, thereby confirm the fingerprint information of discernment object through the signal of telecommunication of external circuit control output, and then can perfect LCD device's fingerprint identification function, thereby improve the security and the intellectuality at terminal.
Drawings
FIG. 1 is a first schematic diagram of a fingerprint recognition module;
FIG. 2 is a second schematic diagram of the fingerprint recognition module;
FIG. 3 is a schematic illustration of an identification object;
FIG. 4 is a schematic view of collecting reflected light;
FIG. 5 is a first schematic view of a photosensitive layer;
FIG. 6 is a second schematic view of the photosensitive layer;
FIG. 7 is a schematic view of ridges and valleys;
FIG. 8 is a schematic diagram of restoring fingerprint information;
FIG. 9 is a first flowchart illustrating a fingerprint identification method;
FIG. 10 is a first schematic diagram of an LCD device;
FIG. 11 is a schematic diagram of a second implementation flow of the fingerprint identification method;
fig. 12 is a first schematic structural diagram of a terminal according to an embodiment of the present application;
fig. 13 is a schematic structural diagram of a terminal according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the specific embodiments described herein are merely illustrative of the relevant application and are not limiting of the application. It should be noted that, for the convenience of description, only the parts related to the related applications are shown in the drawings.
With the continuous progress of terminal technology, terminals have become electronic devices integrating communication and entertainment, and in order to ensure the security of the terminals, fingerprint identification technology is often applied to display screens of mobile phones, tablet computers and other terminals. A common method of fingerprint identification involves scanning a sample fingerprint or an image thereof and storing the image and/or unique features of the fingerprint image, which can be compared with information of reference fingerprints already present in a database to determine the correct identification of the user.
At present, a terminal comprehensively enters a comprehensive screen era, and screen fingerprints also enter a comprehensive application era, the optical fingerprint identification under the screen is widely applied to OLED or AMOLED screens as the most common technical means, and the terminal utilizes the self-luminous characteristics of the screen pixels and places a sensor on the back of the screen to realize fingerprint image acquisition and fingerprint identification.
However, the existing optical fingerprint identification technology under screen requiring self-luminescence of screen can not be applied to the LCD screen occupying a place in the field of display screen, because LCD needs to use the backlight module to provide a stable light source, therefore the function of fingerprint identification can not be realized in the mode of placing the sensor behind the screen, that is to say, the existing optical fingerprint identification technology under screen can not be applied on the LCD screen, so that the fingerprint identification function of the LCD device is not comprehensive enough, thereby reducing the safety and intelligence of the terminal.
In order to solve the problem that prior art exists, this application embodiment provides a fingerprint identification module and method, LCD device, terminal and storage medium, wherein, this application embodiment provides a fingerprint identification module and method, LCD device, terminal and storage medium, and the fingerprint identification module is applicable to the LCD device, and the fingerprint identification module includes: photosensitive layer and external circuit, wherein, the photosensitive layer of newly-increased fingerprint identification module between LCD device's cover plate glass and the touch-control layer, the fingerprint identification module utilizes the photosensitive layer to receive the reverberation of discernment object reflection, and convert the reverberation into the signal of telecommunication, then utilize the double-deck electrically conductive photosensitive material that photosensitive layer set up to transmit the signal of telecommunication to external circuit, thereby confirm the fingerprint information of discernment object through the signal of telecommunication of external circuit control output, and then can perfect the fingerprint identification function of LCD device, thereby improve the security and the intellectuality at terminal.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
An embodiment of the present application provides a fingerprint identification method, and fig. 1 is a schematic diagram of a fingerprint identification module, as shown in fig. 1, in an embodiment of the present application, a fingerprint identification module 10 may include a photosensitive layer 11 and an external circuit 12. Wherein the photosensitive layer 11 is connected to an external circuit 12.
It should be noted that, in the embodiment of the present application, the fingerprint identification module 10 is suitable for the LCD device, wherein, the LCD device may include the fingerprint identification module 10, a cover plate glass, a touch layer, an LCD screen and a backlight module.
Further, in the embodiment of the present application, fig. 2 is a schematic view of a second fingerprint identification module, and as shown in fig. 2, the photosensitive layer 11 in the fingerprint identification module 10 may be disposed between a cover glass and a touch layer in an LCD device.
It should be noted that, in the embodiments of the present application, the backlight module in the LCD device may generate the emitted light. Specifically, when a user touches the LCD device, the emitted light may be reflected by the identified object, generating corresponding reflected light. The recognition object may be a finger touching the LCD device. Fig. 3 is a schematic diagram of an identification object, and as shown in fig. 3, when the identification object is a finger of a user and the finger touches the cover glass of the LCD device, the emitted light emitted from the backlight module is reflected by the finger.
Further, in the embodiment of the present application, the photosensitive layer 11 may be used to collect the reflected light corresponding to the identification object and convert the reflected light into an electrical signal. Fig. 4 is a schematic diagram of collecting reflected light, and as shown in fig. 4, the reflected light reflected by the identified object may be transmitted to the photosensitive layer 11, so as to be collected by the photosensitive layer 11, and generate a corresponding electrical signal.
It is understood that in the embodiments of the present application, the photosensitive layer 11 may be formed of a photosensitive material, wherein the photosensitive material is a material that generates a linearly varying current as the light intensity increases.
Further, in the embodiment of the present application, the photosensitive layer 11 may transmit the electrical signal to the external circuit 12 after converting the collected reflected light into the electrical signal. Specifically, the external circuit 12 may be used to read the electrical signal generated by the photosensitive layer 11 and control the output of the electrical signal to obtain fingerprint information of an identification object.
It should be noted that, in the embodiment of the present application, after the electrical signal is output by the external circuit 12, the processor in the terminal may determine the difference of the intensity of the reflected light according to the difference of the intensity of the electrical signal, so as to further determine the fingerprint information corresponding to the identification.
In an embodiment of the present application, further, the photosensitive layer may include a first conductive layer 111, an isolation layer 112, and a second conductive layer 113. Specifically, the isolation layer 112 may be disposed intermediate the first conductive layer 111 and the second conductive layer 113. The first conductive layer 111 and the second conductive layer 113 are made of a transparent conductive material. Fig. 5 is a first schematic view of the photosensitive layer, and as shown in fig. 5, the first conductive layer 111 and the second conductive layer 113 are respectively disposed on two sides of the isolation layer 112 based on the cross-sectional view of the photosensitive layer 11.
Note that in the embodiment of the present application, the isolation layer 112 may be used to isolate the first conductive layer 111 and the second conductive layer 113. Specifically, since the first conductive layer 111 and the second conductive layer 113 are made of conductive materials, in order to accurately locate the generation position of the electrical signal, that is, the collection position of the reflected light, an isolation layer 112 may be disposed between the first conductive layer 111 and the second conductive layer 113, thereby preventing a short circuit phenomenon from being generated at the overlapping position of the first conductive layer 111 and the second conductive layer 113.
Further, in the embodiment of the present application, the first conductive layer 111 and the second conductive layer 113 in the photosensitive layer 11 may transmit the electrical signal generated by the reflected light in different conductive directions, respectively. Specifically, the first conductive layer 111 may transmit an electrical signal to the external circuit 12 along a first direction, and the second conductive layer 113 may transmit an electrical signal to the external circuit 12 along a second direction. Wherein, the first direction and the second direction can be in a mutually perpendicular relationship. That is, in the embodiment of the present application, the external circuit 12 can read electric signals in two different directions through the first conductive layer 111 and the second conductive layer 113, respectively.
It is understood that in the embodiment of the present application, the photosensitive layer 11 transmits electrical signals in different directions by using the first conductive layer 111 and the second conductive layer 113, so that the processor in the terminal can locate the position where the electrical signals are generated by using the electrical signals in two directions.
In the embodiment of the present application, further, a pixel unit 114 is disposed in the photosensitive layer 11, wherein the size of the pixel unit 114 is the same as the pixel size corresponding to the LCD screen in the LCD device. Specifically, in the present application, at least one pixel unit 114 may be disposed in the photosensitive layer 11, and different pixel units correspond to different coordinate positions, so that the photosensitive layer 11 may determine the collecting position of the reflected light by using the pixel unit 114.
Fig. 6 is a schematic diagram of a photosensitive layer two, as shown in fig. 6, 9 different pixel units 114, a1-a9, are disposed in the photosensitive layer 11, the reflected light reflected by the recognition object can be excited by the photosensitive layer 11 to generate an electrical signal, the photosensitive layer 11 can transmit the electrical signal in the X direction and the Y direction, respectively, and specifically, the photosensitive layer 11 can transmit the electrical signal along X1-X3 and Y1-Y4 corresponding to the positions of the pixel units 114.
Further, in the embodiment of this application, the fingerprint identification module is at the reflected light of collection discernment object reflection, after the corresponding signal of telecommunication of conversion and transmission, the treater in the terminal can be based on the transmission direction and the intensity size of signal of telecommunication, determines the production position and the light intensity size of signal of telecommunication to can confirm the depth degree of the collection position of reflected light and the fingerprint of this collection position department, finally alright restore the fingerprint information of discernment object.
It should be noted that, in the embodiment of the present application, the intensity of the electrical signal may reflect the intensity of the reflected light, and specifically, the greater the intensity of the electrical signal, the stronger the intensity of the corresponding reflected light; accordingly, the smaller the intensity of the electrical signal, the weaker the intensity of the corresponding reflected light.
Further, in the embodiment of the application, the skin of the finger can be divided into ridges and valleys, wherein when the cover plate glass is touched, the fingerprints corresponding to the ridges are deeper, and the fingerprints corresponding to the valleys are shallower. Fig. 7 is a schematic diagram of ridges and valleys, as shown in fig. 7, for the ridge region of the finger, more emitted light is absorbed, and the reflected light generated after being reflected by the ridge region is weaker, so that the light intensity of the reflected light collected by the photosensitive layer 11 is weaker; for the valley area of the finger, less emitted light is absorbed, and the reflected light generated after being reflected by the valley area is stronger, so that the light intensity of the reflected light collected by the photosensitive layer 11 is stronger. That is to say, the intensity of the reflected light collected by the photosensitive layer 11 can reflect the depth of the fingerprint corresponding to the identification object, specifically, the stronger the intensity of the reflected light, the shallower the corresponding fingerprint, that is, the valley of the finger; accordingly, the weaker the intensity of the reflected light, the deeper the corresponding fingerprint, i.e. the ridge of the finger.
For example, fig. 8 is a schematic diagram of restoring fingerprint information, as shown in fig. 8, the fingerprint identification module converts the collected reflected light of the identification object into an electrical signal through the photosensitive layer and the external circuit, and outputs the electrical signal in different directions, and the processor in the terminal may determine, according to the transmission direction and intensity of the electrical signal, that the intensity of the reflected light collected at the positions of the pixel units a7, a5, A3, and a1 is weak, and that the intensity of the reflected light collected at the positions of the pixel units A8, a6, a4, and a2 is strong, so as to determine the valleys and ridges of the identification object pressed on the surface of the cover glass, that is, determine the depths of fingerprints corresponding to the identification object at different positions, and further restore the fingerprint information of the identification object.
The embodiment of the application provides a fingerprint identification module, and the fingerprint identification module is applicable to the LCD device, and the fingerprint identification module includes: the photosensitive layer is connected with the external circuit; the photosensitive layer is used for collecting reflected light corresponding to the identification object and converting the reflected light into an electric signal; and the external circuit is used for reading the electric signal and controlling the output of the electric signal so as to obtain the fingerprint information corresponding to the identification object. Therefore, in the embodiment of this application, the photosensitive layer of newly-increased fingerprint identification module between LCD device's cover plate glass and the touch-control layer, the fingerprint identification module utilizes the photosensitive layer to receive the reverberation of discernment object reflection, and convert the reverberation into the signal of telecommunication, then utilize the double-deck electrically conductive photosensitive material that photosensitive layer set up to transmit the signal of telecommunication to external circuit, thereby confirm the fingerprint information of discernment object through the signal of telecommunication of external circuit control output, and then can perfect LCD device's fingerprint identification function, thereby improve the security and the intellectuality at terminal.
Based on the foregoing embodiment, a further embodiment of the present application provides a fingerprint identification method, where the fingerprint identification method is applied to a fingerprint identification module, fig. 9 is a schematic diagram of an implementation flow of the fingerprint identification method, and as shown in fig. 9, the method for fingerprint identification by the fingerprint identification module may include the following steps:
In the embodiment of the application, the fingerprint identification module can collect the reflected light corresponding to the identification object first. Wherein the recognition object may be a finger of the user.
It should be noted that, in the embodiment of this application, fingerprint identification module can be applicable to in the LCD device, and wherein, the LCD device can include fingerprint identification module, cover plate glass, touch-control layer, LCD screen and backlight unit.
Further, in the embodiment of this application, fingerprint identification module can be by photosensitive layer and external circuit constitute, wherein, photosensitive layer and external circuit connect. Specifically, the photosensitive layer in the fingerprint identification module can be disposed between the cover glass and the touch layer in the LCD device.
It should be noted that, in the embodiment of the present application, the fingerprint identification module mainly collects the reflected light by using the photosensitive layer when collecting the reflected light corresponding to the identification object. Specifically, after the emitted light generated by the backlight module in the LCD device is reflected by the recognition object, the generated reflected light may be transmitted to the photosensitive layer to be collected by the photosensitive layer.
In the embodiment of the application, after the fingerprint identification module collects the reflected light corresponding to the identification object, the reflected light can be converted into the electric signal corresponding to the reflected light.
It should be noted that, in the embodiment of the present application, the photosensitive layer in the fingerprint identification module may be made of a photosensitive material, where the photosensitive material is a material that generates a linearly changing current with an increase in light intensity. Therefore, the fingerprint identification module can convert the reflected light into a corresponding electric signal after the reflected light is collected by the photosensitive layer.
And 103, outputting the electric signal to obtain fingerprint information corresponding to the identification object.
In the embodiment of this application, the fingerprint identification module can output the electric signal after converting the reverberation into the corresponding electric signal of reverberation to can obtain the fingerprint information that the discernment object corresponds.
It should be noted that, in the embodiment of the present application, after the fingerprint identification module converts the collected reflected light into an electrical signal through the photosensitive layer, the electrical signal may be read through an external circuit, and then the electrical signal is output to the terminal through the external circuit.
Further, in an embodiment of the present application, the photosensitive layer may include a first conductive layer, an isolation layer, and a second conductive layer. In particular, the isolation layer may be disposed intermediate the first conductive layer and the second conductive layer for isolating the first conductive layer and the second conductive layer.
It should be noted that, in the embodiments of the present application, the first conductive layer and the second conductive layer in the photosensitive layer may transmit the electrical signal generated by the reflected light according to different conductive directions, respectively. In particular, the first conductive layer may transmit electrical signals to an external circuit along a first direction, and the second conductive layer may transmit electrical signals to the external circuit along a second direction. Wherein, the first direction and the second direction can be in a mutually perpendicular relationship. That is, in the embodiments of the present application, the external circuit can read the electrical signals of two different directions through the first conductive layer and the second conductive layer, respectively.
It is understood that in the embodiments of the present application, the photosensitive layer transmits electrical signals in different directions by using the first conductive layer and the second conductive layer, so that the processor in the terminal can locate the generation position of the electrical signals by using the electrical signals in two directions.
Further, in the embodiment of this application, the fingerprint identification module is at the reflected light of collection discernment object reflection, after the corresponding signal of telecommunication of conversion and transmission, the treater in the terminal can be based on the transmission direction and the intensity size of signal of telecommunication, determines the production position and the light intensity size of signal of telecommunication to can confirm the depth degree of the collection position of reflected light and the fingerprint of this collection position department, finally alright restore the fingerprint information of discernment object.
It should be noted that, in the embodiment of the present application, the intensity of the electrical signal may reflect the intensity of the reflected light, and the intensity of the reflected light may reflect the depth degree of the fingerprint corresponding to the identification object, specifically, the greater the intensity of the electrical signal is, the stronger the intensity of the corresponding reflected light is, the shallower the corresponding fingerprint is, which is the valley of the finger; accordingly, the smaller the intensity of the electrical signal, the weaker the intensity of the corresponding reflected light, and the deeper the corresponding fingerprint, i.e. the ridge of the finger. Therefore, the fingerprint identification module passes through photosensitive layer and external circuit, converts the reverberation of the discernment object of gathering into the signal of telecommunication, and after the direction of following the signal of telecommunication output according to the difference, the treater in the terminal can be according to the transmission direction and the intensity size of signal of telecommunication, confirms according to the valley and the ridge of pressing at the discernment object on glass cover surface promptly, determines the fingerprint depth that the discernment object corresponds in different positions department, and then alright restore the fingerprint information of discernment object.
Further, in an embodiment of the present application, the fingerprint information of the identification object may be a fingerprint image reflecting the fingerprint depth of the identification object.
The embodiment of the application provides a fingerprint identification method, which is applied to a fingerprint identification module, wherein the fingerprint identification module is suitable for an LCD device, and the fingerprint identification module collects reflected light corresponding to an identification object; converting the reflected light into an electrical signal corresponding to the reflected light; and outputting the electric signal to obtain fingerprint information corresponding to the identification object. Therefore, in the embodiment of this application, the photosensitive layer of newly-increased fingerprint identification module between LCD device's cover plate glass and the touch-control layer, the fingerprint identification module utilizes the photosensitive layer to receive the reverberation of discernment object reflection, and convert the reverberation into the signal of telecommunication, then utilize the double-deck electrically conductive photosensitive material that photosensitive layer set up to transmit the signal of telecommunication to external circuit, thereby confirm the fingerprint information of discernment object through the signal of telecommunication of external circuit control output, and then can perfect LCD device's fingerprint identification function, thereby improve the security and the intellectuality at terminal.
Based on the above embodiments, another embodiment of the present application provides an LCD device, and fig. 10 is a schematic view of an LCD device, as shown in fig. 10, an LCD device 20 may include a fingerprint identification module 10, a cover glass 21, a touch layer 22, an LCD screen 23 and a backlight module 24.
It should be noted that, in the embodiment of the present application, the fingerprint identification module 10 may include a photosensitive layer 11 and an external circuit 12. The photosensitive layer 12 is disposed between the cover glass 21 and the touch layer 22.
Further, in the embodiment of the present application, in the structure of the LCD device 20, the cover glass 21 is used as an upper surface, and the cover glass 21, the photosensitive layer 11 in the fingerprint identification module 10, the touch layer 22, the LCD screen 23 and the backlight module 24 are sequentially disposed from top to bottom.
That is, in the present application, the photosensitive layer 12 is disposed between the cover glass 21 and the touch layer 22, and the LCD screen 23 is disposed on the other side of the touch layer 22 corresponding to the photosensitive layer 11; and the backlight module 24 is arranged on the other side of the LCD screen 23 corresponding to the touch layer 22.
Further, in the embodiment of the present application, the backlight module 24 in the LCD device 20 may be used to generate the emitted light. The backlight module 24 is a light source located behind the LCD device 20, and its light-emitting effect will directly affect the visual effect of the LCD screen 23. The LCD panel 23 itself does not emit light and it displays graphics or characters as a result of its modulation of light. That is, the LCD device 20 is a non-emissive display device, and the backlight module 24 is required to achieve the display function. The quality of the backlight assembly 24 directly affects the display quality of the LCD device 20.
The backlight module 24 mainly comprises a light source, a light guide plate, an optical film, a plastic frame, and the like, and has the characteristics of high brightness, long service life, uniform light emission, and the like. The backlight module 24 can be divided into an edge type and a direct type (bottom backlight type) according to the distribution position.
It should be noted that, in the embodiment of the present application, the backlight module 24 in the LCD device 20 may generate the emitted light. Specifically, when the user touches the LCD device 20, the emitted light may be reflected by the identified object, generating corresponding reflected light. The recognition object may be a finger touching the LCD device 20. When the object is a finger of a user, and the finger touches the cover glass 21 of the LCD device 20, the emitted light from the backlight module 24 is reflected by the finger to generate a corresponding reflected light.
Further, in the embodiment of the present application, the photosensitive layer 11 disposed in the fingerprint identification module 10 in the LCD device 20 may be used to collect the reflected light corresponding to the identification object and convert the reflected light into an electrical signal; wherein the recognition object reflects the emitted light to obtain reflected light.
Further, in the embodiment of the present application, the external circuit 12 disposed in the fingerprint identification module 10 of the LCD device 20 may be used to read the electrical signal and control the output of the electrical signal to obtain the fingerprint information corresponding to the identification object.
An embodiment of the present application provides an LCD device, including: the touch screen comprises a fingerprint identification module, cover plate glass, a touch layer, an LCD screen and a backlight module, wherein the fingerprint identification module comprises a photosensitive layer and an external circuit, and the photosensitive layer is arranged between the cover plate glass and the touch layer; the LCD screen is arranged on the other side, corresponding to the photosensitive layer, of the touch layer; the backlight module is arranged on the other side, corresponding to the touch layer, of the LCD screen. Therefore, in the embodiment of this application, the photosensitive layer of newly-increased fingerprint identification module between LCD device's cover plate glass and the touch-control layer, the fingerprint identification module utilizes the photosensitive layer to receive the reverberation of discernment object reflection, and convert the reverberation into the signal of telecommunication, then utilize the double-deck electrically conductive photosensitive material that photosensitive layer set up to transmit the signal of telecommunication to external circuit, thereby confirm the fingerprint information of discernment object through the signal of telecommunication of external circuit control output, and then can perfect LCD device's fingerprint identification function, thereby improve the security and the intellectuality at terminal.
Based on the foregoing embodiment, another embodiment of the present application provides a fingerprint identification method, where the fingerprint identification method is applied to a terminal, where the terminal is provided with an LCD device, the LCD device includes a fingerprint identification module, fig. 11 is a schematic diagram of an implementation flow of the fingerprint identification method, and as shown in fig. 11, the method for the terminal to perform fingerprint identification may include the following steps:
In the embodiment of the application, the terminal can collect the reflected light corresponding to the identification object through the fingerprint identification module arranged in the LCD device, and obtain the electric signal corresponding to the reflected light. Wherein the recognition object may be a finger of the user.
It should be noted that, in the embodiments of the present application, the LCD device may include a fingerprint identification module, a cover glass, a touch layer, an LCD screen, and a backlight module.
Further, in the embodiment of this application, fingerprint identification module can be by photosensitive layer and external circuit constitute, wherein, photosensitive layer and external circuit connect. Specifically, the photosensitive layer in the fingerprint identification module can be disposed between the cover glass and the touch layer in the LCD device.
It should be noted that, in the embodiment of the present application, the fingerprint identification module mainly collects the reflected light by using the photosensitive layer when collecting the reflected light corresponding to the identification object. Specifically, after the emitted light generated by the backlight module in the LCD device is reflected by the recognition object, the generated reflected light may be transmitted to the photosensitive layer to be collected by the photosensitive layer.
Further, in the embodiment of the present application, the photosensitive layer in the fingerprint identification module may be made of a photosensitive material, wherein the photosensitive material is a material that generates a linearly changing current as the light intensity increases. Therefore, the fingerprint identification module can convert the reflected light into a corresponding electric signal after the reflected light is collected by the photosensitive layer.
It should be noted that, in the embodiment of the present application, after the fingerprint identification module converts the collected reflected light into an electrical signal through the photosensitive layer, the electrical signal may be read through an external circuit, and then the electrical signal is output to the terminal through the external circuit.
It is understood that in the embodiments of the present application, the terminal may be any device having communication and storage functions and provided with a touch screen. For example: tablet computers, mobile phones, electronic readers, remote controllers, Personal Computers (PCs), notebook computers, vehicle-mounted devices, network televisions, wearable devices, and the like.
In the embodiment of the application, the terminal acquires the reflected light corresponding to the identification object through the fingerprint identification module, and after the electric signal corresponding to the reflected light is obtained, the position information corresponding to the identification object can be determined according to the electric signal.
Further, in an embodiment of the present application, the photosensitive layer may include a first conductive layer, an isolation layer, and a second conductive layer. In particular, the isolation layer may be disposed intermediate the first conductive layer and the second conductive layer for isolating the first conductive layer and the second conductive layer.
It should be noted that, in the embodiments of the present application, the first conductive layer and the second conductive layer in the photosensitive layer may transmit the electrical signal generated by the reflected light according to different conductive directions, respectively. In particular, the first conductive layer may transmit electrical signals to an external circuit along a first direction, and the second conductive layer may transmit electrical signals to the external circuit along a second direction. Wherein, the first direction and the second direction can be in a mutually perpendicular relationship. That is, in the embodiments of the present application, the external circuit can read the electrical signals of two different directions through the first conductive layer and the second conductive layer, respectively.
It can be understood that, in the embodiments of the present application, the photosensitive layer transmits the electrical signals in different directions by using the first conductive layer and the second conductive layer, so that the processor in the terminal can use the electrical signals in two directions to locate the generation position of the electrical signals, i.e., the position information corresponding to the electrical signals.
In the embodiment of the application, after the terminal determines the position information corresponding to the identification object according to the electric signal, the fingerprint information corresponding to the identification object can be further generated by using the strength corresponding to the position information and the electric signal.
Further, in the embodiment of the application, after the fingerprint identification module collects the reflected light reflected by the identification object and converts and transmits the corresponding electric signal, the processor in the terminal can determine the generation position of the electric signal, namely the position information, based on the transmission direction and the intensity of the electric signal, and after determining the intensity corresponding to the electric signal, the position information and the intensity are utilized to determine the collection position of the reflected light and the depth of the fingerprint at the collection position, so that the fingerprint information of the identification object can be finally restored.
It should be noted that, in the embodiment of the present application, the intensity of the electrical signal may reflect the intensity of the reflected light, and the intensity of the reflected light may reflect the depth degree of the fingerprint corresponding to the identification object, specifically, the greater the intensity of the electrical signal is, the stronger the intensity of the corresponding reflected light is, the shallower the corresponding fingerprint is, which is the valley of the finger; accordingly, the smaller the intensity of the electrical signal, the weaker the intensity of the corresponding reflected light, and the deeper the corresponding fingerprint, i.e. the ridge of the finger. Therefore, the fingerprint identification module passes through photosensitive layer and external circuit, converts the reverberation of the discernment object of gathering into the signal of telecommunication, and after the direction of following the signal of telecommunication output according to the difference, the treater in the terminal can be according to the transmission direction and the intensity size of signal of telecommunication, confirms according to the valley and the ridge of pressing at the discernment object on glass cover surface promptly, determines the fingerprint depth that the discernment object corresponds in different positions department, and then alright restore the fingerprint information of discernment object.
Further, in an embodiment of the present application, the fingerprint information of the identification object may be a fingerprint image reflecting the fingerprint depth of the identification object.
In the embodiment of the present application, further, after the terminal generates fingerprint information corresponding to the identification object by using the position information and the strength of the electrical signal, that is, after step 203, the method for the terminal to perform fingerprint identification may further include the following steps:
and step 204, comparing the fingerprint information with a preset fingerprint template to obtain a similarity parameter.
And step 205, if the similarity parameter is greater than or equal to the preset similarity threshold, generating information of successful matching.
And step 206, if the similarity parameter is smaller than a preset similarity threshold, generating information of matching failure.
In the embodiment of the application, after the terminal generates the fingerprint information corresponding to the identification object by using the strength of the position information and the electric signal, the fingerprint information and the preset fingerprint template can be compared, then the similarity parameter between the fingerprint information and the preset fingerprint template can be obtained, and then the terminal can compare the similarity parameter between the fingerprint information and the preset fingerprint template with the preset similarity threshold value again, so that the identity authentication of the identification object can be completed.
Further, in the embodiment of the present application, the terminal may determine a similarity degree between the fingerprint information of the identification object and a preset fingerprint template, that is, obtain a similarity parameter between the two. The preset fingerprint template is used for verifying fingerprint information.
It should be noted that, in the embodiment of the present application, after the terminal determines the degree of similarity between the fingerprint information of the identification object and the preset fingerprint template, the terminal may further perform identity verification on the identification object by using the similarity parameter between the fingerprint information of the identification object and the preset fingerprint template. Specifically, the terminal may compare the similarity parameter with a preset similarity threshold stored in advance, and then implement authentication of the identification object according to the comparison result.
Further, in the embodiment of the present application, after the terminal compares the similarity parameter with the pre-stored preset similarity threshold, if the comparison result is that the similarity parameter is greater than or equal to the preset similarity threshold, the terminal may consider that the identification object passes through the identity authentication, so as to generate information that the matching is successful, that is, notify that the fingerprint information of the identification object matches with the preset fingerprint template.
Further, in the embodiment of the present application, after the terminal compares the similarity parameter with the pre-stored preset similarity threshold, if the comparison result is that the similarity parameter is smaller than the preset similarity threshold, the terminal may consider that the identification object does not pass the identity verification, so that information of a matching failure may be generated, that is, the fingerprint information of the identification object is notified to be mismatched with the preset fingerprint template.
The embodiment of the application provides a fingerprint identification method, which is applied to a terminal, wherein the terminal is provided with an LCD device, the LCD device comprises a fingerprint identification module, and the terminal acquires reflected light corresponding to an identification object through the fingerprint identification module and obtains an electric signal corresponding to the reflected light; determining position information corresponding to the identification object according to the electric signal; fingerprint information corresponding to the identification object is generated using the position information and the intensity of the electric signal. Therefore, in the embodiment of this application, the photosensitive layer of newly-increased fingerprint identification module between LCD device's cover plate glass and the touch-control layer, the fingerprint identification module utilizes the photosensitive layer to receive the reverberation of discernment object reflection, and convert the reverberation into the signal of telecommunication, then utilize the double-deck electrically conductive photosensitive material that photosensitive layer set up to transmit the signal of telecommunication to external circuit, thereby confirm the fingerprint information of discernment object through the signal of telecommunication of external circuit control output, and then can perfect LCD device's fingerprint identification function, thereby improve the security and the intellectuality at terminal.
Based on the foregoing embodiment, in another embodiment of the present application, fig. 12 is a schematic view of a composition structure of a terminal provided in the embodiment of the present application, and as shown in fig. 12, a terminal 3 provided in the embodiment of the present application may include an acquisition unit 31, an acquisition unit 32, a determination unit 33, a generation unit 34, and a comparison unit 35.
The collecting unit 31 is used for collecting the reflected light corresponding to the identification object through the fingerprint identification module;
the acquiring unit 32 is configured to acquire an electrical signal corresponding to the reflected light;
the determining unit 33 is configured to determine, according to the electric signal, position information corresponding to the identification object;
the generating unit 34 is configured to generate fingerprint information corresponding to the identification object by using the position information and the strength of the electrical signal.
Further, in an embodiment of the present application, the comparing unit 35 is configured to compare the fingerprint information with a preset fingerprint template after generating the fingerprint information corresponding to the identification object by using the position information and the strength of the electrical signal, so as to obtain a similarity parameter;
the generating unit 33 is further configured to generate information that matching is successful if the similarity parameter is greater than or equal to a preset similarity threshold; and if the similarity parameter is smaller than the preset similarity threshold, generating matching failure information.
In an embodiment of the present application, further, fig. 13 is a schematic diagram of a composition structure of a terminal provided in the embodiment of the present application, as shown in fig. 13, a terminal 3 provided in the embodiment of the present application may further include a processor 36 and a memory 37 storing executable instructions of the processor 36, and further, the terminal 3 may further include a communication interface 38, and a bus 39 for connecting the processor 36, the memory 37, and the communication interface 38.
In an embodiment of the present application, the Processor 36 may be at least one of an Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a ProgRAMmable Logic Device (PLD), a Field ProgRAMmable Gate Array (FPGA), a Central Processing Unit (CPU), a controller, a microcontroller, and a microprocessor. It is understood that the electronic devices for implementing the above processor functions may be other devices, and the embodiments of the present application are not limited in particular. The terminal 3 may further comprise a memory 37, which memory 37 may be connected to the processor 36, wherein the memory 37 is adapted to store executable program code comprising computer operating instructions, and wherein the memory 37 may comprise a high speed RAM memory, and possibly a non-volatile memory, such as at least two disk memories.
In the embodiment of the present application, a bus 39 is used to connect the communication interface 38, the processor 36, and the memory 37 and the intercommunication among these devices.
In the embodiment of the present application, the memory 37 is used for storing instructions and data.
Further, in an embodiment of the present application, the processor 37 is configured to collect reflected light corresponding to an identification object through the fingerprint identification module, and obtain an electrical signal corresponding to the reflected light; determining position information corresponding to the identification object according to the electric signal; and generating fingerprint information corresponding to the identification object by using the position information and the strength of the electric signal.
In practical applications, the Memory 37 may be a volatile Memory (volatile Memory), such as a Random-Access Memory (RAM); or a non-volatile Memory (non-volatile Memory), such as a Read-Only Memory (ROM), a flash Memory (flash Memory), a Hard disk (Hard disk Drive, HDD) or a Solid-State Drive (SSD); or a combination of the above types of memories and provides instructions and data to the processor 36.
In addition, each functional module in this embodiment may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware or a form of a software functional module.
Based on the understanding that the technical solution of the present embodiment essentially or a part contributing to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium, and include several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the method of the present embodiment. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
The terminal is provided with the LCD device, wherein the LCD device comprises a fingerprint identification module, and the terminal collects reflected light corresponding to an identification object through the fingerprint identification module and obtains an electric signal corresponding to the reflected light; determining position information corresponding to the identification object according to the electric signal; and generating fingerprint information corresponding to the identification object by using the position information and the strength of the electric signal. Therefore, in the embodiment of this application, the photosensitive layer of newly-increased fingerprint identification module between LCD device's cover plate glass and the touch-control layer, the fingerprint identification module utilizes the photosensitive layer to receive the reverberation of discernment object reflection, and convert the reverberation into the signal of telecommunication, then utilize the double-deck electrically conductive photosensitive material that photosensitive layer set up to transmit the signal of telecommunication to external circuit, thereby confirm the fingerprint information of discernment object through the signal of telecommunication of external circuit control output, and then can perfect LCD device's fingerprint identification function, thereby improve the security and the intellectuality at terminal.
An embodiment of the present application provides a computer-readable storage medium, on which a program is stored, which when executed by a processor implements the fingerprint identification method as described above.
Specifically, the program instructions corresponding to a fingerprint identification method in the present embodiment may be stored on a storage medium such as an optical disc, a hard disc, a usb disk, or the like, and when the program instructions corresponding to a fingerprint identification method in the storage medium are read or executed by an electronic device, the method includes the following steps:
collecting reflected light corresponding to an identification object through the fingerprint identification module, and obtaining an electric signal corresponding to the reflected light;
determining position information corresponding to the identification object according to the electric signal;
and generating fingerprint information corresponding to the identification object by using the position information and the strength of the electric signal.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of implementations of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart block or blocks and/or flowchart block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart block or blocks in the flowchart and/or block diagram block or blocks.
The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application.
Claims (13)
1. The utility model provides a fingerprint identification module, its characterized in that, the fingerprint identification module is applicable to liquid crystal display LCD device, the fingerprint identification module includes: a photosensitive layer and an external circuit, wherein the photosensitive layer and the external circuit are connected;
the photosensitive layer is used for collecting reflected light corresponding to an identification object and converting the reflected light into an electric signal;
and the external circuit is used for reading the electric signal and controlling the output of the electric signal so as to obtain the fingerprint information corresponding to the identification object.
2. The fingerprint identification module of claim 1, wherein the photosensitive layer comprises a first conductive layer, an isolation layer, and a second conductive layer; wherein the content of the first and second substances,
the isolation layer is arranged between the first conducting layer and the second conducting layer.
3. The fingerprint identification module of claim 1, wherein the photosensitive layer has pixel units disposed therein, wherein,
the size of the pixel unit is the same as the size of the pixel corresponding to the LCD screen in the LCD device.
4. The fingerprint identification module of claim 1,
the photosensitive layer is arranged between the cover plate glass and the touch layer in the LCD device.
5. The fingerprint identification module of claim 2,
the first conductive layer transmits the electrical signal to the external circuit in a first direction;
the second conductive layer transmits the electrical signal to the external circuit in a second direction; wherein the first direction and the second direction are perpendicular to each other.
6. A fingerprint identification method is applied to a fingerprint identification module, and the method comprises the following steps:
collecting reflected light corresponding to an identification object;
converting the reflected light into an electrical signal corresponding to the reflected light;
and outputting the electric signal to obtain fingerprint information corresponding to the identification object.
7. An LCD device, comprising: a fingerprint identification module, a cover plate glass, a touch layer, an LCD screen and a backlight module, wherein the fingerprint identification module comprises a photosensitive layer and an external circuit,
the photosensitive layer is arranged between the cover plate glass and the touch layer;
the LCD screen is arranged on the other side, corresponding to the photosensitive layer, of the touch layer;
the backlight module is arranged on the other side, corresponding to the touch layer, of the LCD screen.
8. The LCD device of claim 7,
the backlight module is used for generating emitted light;
the photosensitive layer is used for collecting reflected light corresponding to an identification object and converting the reflected light into an electric signal; wherein the identification object reflects the emitted light to obtain the reflected light;
and the external circuit is used for reading the electric signal and controlling the output of the electric signal so as to obtain the fingerprint information corresponding to the identification object.
9. A fingerprint identification method is applied to a terminal, the terminal is provided with an LCD device, the LCD device comprises a fingerprint identification module, and the method comprises the following steps:
collecting reflected light corresponding to an identification object through the fingerprint identification module, and obtaining an electric signal corresponding to the reflected light;
determining position information corresponding to the identification object according to the electric signal;
and generating fingerprint information corresponding to the identification object by using the position information and the strength of the electric signal.
10. The method of claim 9, wherein after generating fingerprint information corresponding to the identified object using the location information and the strength of the electrical signal, the method further comprises:
comparing the fingerprint information with a preset fingerprint template to obtain a similarity parameter;
if the similarity parameter is greater than or equal to a preset similarity threshold, generating information of successful matching;
and if the similarity parameter is smaller than the preset similarity threshold, generating information of matching failure.
11. A terminal, characterized in that the terminal comprises: a collecting unit, an obtaining unit, a determining unit and a generating unit,
the collecting unit is used for collecting the reflected light corresponding to the identification object through the fingerprint identification module;
the acquisition unit is used for acquiring an electric signal corresponding to the reflected light;
the determining unit is used for determining the position information corresponding to the identification object according to the electric signal;
the generating unit is used for generating fingerprint information corresponding to the identification object by using the position information and the strength of the electric signal.
12. A terminal, characterized in that the terminal comprises: a processor, a memory storing instructions executable by the processor, an LCD device, wherein the LCD device comprises a fingerprint recognition module, which when executed by the processor implements the method of any one of claims 9-10.
13. A computer-readable storage medium, on which a program is stored, for use in a terminal, characterized in that the program, when executed by a processor, implements the method according to any one of claims 9-10.
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