CN108615032B - Module, terminal equipment and fingerprint identification method supporting full-screen fingerprint identification - Google Patents
Module, terminal equipment and fingerprint identification method supporting full-screen fingerprint identification Download PDFInfo
- Publication number
- CN108615032B CN108615032B CN201810664376.0A CN201810664376A CN108615032B CN 108615032 B CN108615032 B CN 108615032B CN 201810664376 A CN201810664376 A CN 201810664376A CN 108615032 B CN108615032 B CN 108615032B
- Authority
- CN
- China
- Prior art keywords
- fingerprint identification
- unit
- area
- pixel sub
- fingerprint
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Multimedia (AREA)
- Theoretical Computer Science (AREA)
- Image Input (AREA)
Abstract
The application is suitable for the technical field of fingerprint identification, and provides a module, terminal equipment and a fingerprint identification method supporting full-screen fingerprint identification, the module comprises: the base plate, be located be array distribution's fingerprint identification unit on the base plate, the fingerprint identification unit includes: the positive electrode of the photosensitive diode is connected with a working voltage line, the working voltage line is used for providing bias voltage for the working of the photosensitive diode, and the negative electrode of the photosensitive diode is connected with the drain electrode of the thin film transistor; the utility model provides a fingerprint identification device, including photosensitive diode, scanning line, data line, scanning line, data line, the structure can be provided through this application with the fingerprint identification function setting on the display screen to realize full-screen fingerprint identification function.
Description
Technical Field
The application belongs to the technical field of fingerprint identification, and particularly relates to a module, a terminal device and a fingerprint identification method supporting full-screen fingerprint identification.
Background
Fingerprinting is a technique of identity authentication by comparing minutiae points of different fingerprints. The fingerprints of each person are different, and the ten fingers of the same person are also obviously different, so that the fingerprints can be used for identity authentication.
At present, more and more mobile phone manufacturers begin to consider setting the fingerprint identification module on the front screen of the mobile phone, however, the light sensation fingerprint identification module needs a point light source and a sensor. If the light sensation identification module is arranged on the front screen, the arrangement of the display module is influenced. At present, a structure which can fuse the fingerprint identification module and the display module together does not exist.
Disclosure of Invention
In view of this, embodiments of the present application provide a module, a terminal device and a fingerprint identification method supporting full-screen fingerprint identification, so as to provide a structure that fuses a fingerprint identification module and a display module together.
A first aspect of the embodiments of the present application provides a module supporting full-screen fingerprint identification, including:
the fingerprint identification device comprises a substrate and fingerprint identification units which are arranged on the substrate in an array manner;
the fingerprint recognition unit includes: a photodiode, a thin film transistor corresponding to the photodiode;
the anode of the photosensitive diode is connected with a working voltage line, and the working voltage line is used for providing a bias voltage for the photosensitive diode to work;
the cathode of the photosensitive diode is connected with the drain electrode of the thin film transistor; the grid electrode of the thin film transistor is connected with a scanning line, and the scanning line is used for controlling the on-off state of the thin film transistor;
the source electrode of the thin film transistor is connected with a data line, and the data line is used for outputting an electric signal generated when the photosensitive diode receives light reflected by a finger.
A second aspect of an embodiment of the present application provides a terminal device, including:
the first aspect of the embodiment of the application provides a module supporting full-screen fingerprint identification.
A third aspect of the embodiments of the present application provides a fingerprint identification method, which is applied to the terminal device provided in the second aspect of the embodiments of the present application, and the fingerprint identification method includes:
after receiving a fingerprint identification instruction, monitoring contact information on a display screen of the terminal equipment;
after the contact information on the display screen of the terminal equipment is monitored, determining a fingerprint identification area based on the position of the contact information;
starting a fingerprint identification unit of the fingerprint identification area, and closing the fingerprint identification unit of the area outside the fingerprint identification area in the display screen;
and collecting the fingerprint information of the user through the fingerprint identification unit of the fingerprint identification area.
A fourth aspect of the embodiments of the present application provides a terminal device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the steps of the method provided in the third aspect of the embodiments of the present application when executing the computer program.
A fifth aspect of embodiments of the present application provides a computer-readable storage medium storing a computer program which, when executed by one or more processors, performs the steps of the method provided by the third aspect of embodiments of the present application.
A sixth aspect of embodiments of the present application provides a computer program product comprising a computer program which, when executed by one or more processors, performs the steps of the method provided by the third aspect of embodiments of the present application.
The embodiment of the application provides a module, the module includes: the fingerprint identification device comprises a substrate and fingerprint identification units which are arranged on the substrate in an array manner; the fingerprint recognition unit includes: a photodiode, a thin film transistor corresponding to the photodiode; the anode of the photosensitive diode is connected with a working voltage line, and the working voltage line is used for providing a bias voltage for the photosensitive diode to work; the cathode of the photosensitive diode is connected with the drain electrode of the thin film transistor; the grid electrode of the thin film transistor is connected with a scanning line, and the scanning line is used for controlling the on-off state of the thin film transistor; the source electrode of the thin film transistor is connected with a data line, and the data line is used for outputting an electric signal generated when the photosensitive diode receives light reflected by a finger. Because this application embodiment sets up the fingerprint identification unit on the base plate, the base plate can be applied to in the display module assembly to fuse fingerprint identification unit and display module assembly together.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a module supporting full-screen fingerprint identification according to an embodiment of the present disclosure;
FIG. 2 is a circuit diagram of a photodiode in a fingerprint identification unit according to an embodiment of the present disclosure;
fig. 3 is an application scenario of fingerprint identification according to an embodiment of the present application;
FIG. 4 is a diagram illustrating an exemplary layout of a module supporting full-screen fingerprint recognition according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of another module supporting full-screen fingerprint identification according to an embodiment of the present disclosure;
fig. 6 is a schematic flowchart of an implementation process of a fingerprint identification method according to an embodiment of the present application;
fig. 7 is a schematic block diagram of a terminal device provided in an embodiment of the present application;
fig. 8 is a schematic block diagram of another terminal device provided in an embodiment of the present application;
in the figure: 101. a substrate; 102. an RGBW unit; 1021. an RGBW unit of the fingerprint identification unit is arranged; 1022. the RGBW unit is not provided with a fingerprint identification unit; 103. a fingerprint recognition unit; 104. a white pixel sub-unit; 106. a thin film transistor; 107. a photodiode.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of the present application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
As used in this specification and the appended claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to a determination" or "in response to a detection". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.
Before describing specific embodiments, the RGBW technology and a Liquid Crystal Display (LCD) will be described first.
The RGBW technology is that W white pixels are added on the original RGB three primary colors, and the design of four-color type pixels is formed.
The liquid crystal display screen is constructed by placing a liquid crystal box between two parallel glass substrates, arranging a Thin Film Transistor (TFT) on the lower substrate glass, arranging a color filter on the upper substrate glass, and controlling the rotation direction of liquid crystal molecules by changing signals and voltages on the TFT, thereby controlling whether polarized light of each pixel point is emitted or not to achieve the display purpose.
In order to explain the technical solution described in the present application, the following description will be given by way of specific examples. It should be noted that in the embodiment of the present application, "RGBW unit 1021" is used to indicate an RGBW unit in which a fingerprint identification unit is disposed; the "RGBW unit 1022" is used to indicate an RGBW unit in which the fingerprint recognition unit is not provided.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a module supporting full-screen fingerprint identification according to an embodiment of the present disclosure, and fig. 2 is a circuit diagram of a photodiode in a fingerprint identification unit according to an embodiment of the present disclosure.
As shown, the module includes:
the fingerprint identification device comprises a substrate 101 and fingerprint identification units 103 which are arranged on the substrate 101 in an array manner;
the fingerprint recognition unit 103 includes: a photodiode 107, a thin film transistor 106 corresponding to the photodiode 107;
the anode of the photodiode 107 is connected to a working voltage line, and the working voltage line is used for providing a bias voltage for the operation of the photodiode 107;
the cathode of the photodiode 107 is connected with the drain of the thin film transistor 106; the gate of the thin film transistor 106 is connected to a scan line, and the scan line is used for controlling the on-off state of the thin film transistor 106;
the source of the thin film transistor 106 is connected to a data line for outputting an electrical signal generated by the photodiode 107 when receiving light reflected by a finger.
In the embodiment of the present application, as shown in fig. 1, the substrate 101 represents a lower substrate on which a thin film transistor 106 is disposed; namely, RGBW units 102 distributed in an array are also present on the substrate 101; the red pixel sub-unit, the green pixel sub-unit, the blue pixel sub-unit, the white pixel sub-unit 104 in the RGBW unit 102 and the photodiode 107 in the fingerprint identification unit 103 are arranged laterally.
In the present embodiment, the red pixel sub-unit, the green pixel sub-unit, the blue pixel sub-unit, and the white pixel sub-unit 104 in the RGBW unit 102 are not represented as a red region, a green region, a blue region, and a white region on a filter; the red pixel sub-unit, the green pixel sub-unit, the blue pixel sub-unit and the white pixel sub-unit 104 in the RGBW unit 102 respectively represent a glass electrode corresponding to the red region, a glass electrode corresponding to the green region, a glass electrode corresponding to the blue region and a glass electrode corresponding to the white region in the filter.
The area occupied by the RGBW unit 102 is divided into 4 areas; the 4 regions may be equal or unequal, and the red pixel sub-unit, the green pixel sub-unit, the blue pixel sub-unit, and the white pixel sub-unit 104 are respectively in one region.
In order to embed the fingerprint recognition unit 103 in the substrate 101, the fingerprint recognition unit 103 may be embedded in a region where the white pixel sub-unit 104 is located, in order not to affect the display effect of the RGBW unit 102, the area of the white pixel sub-unit 104, that is, the area of the glass electrode in the white pixel sub-unit 104, may be reduced without changing the distribution of the RGBW unit 102 on the substrate 101, the fingerprint recognition unit 103 may be embedded in a region where the white pixel sub-unit 104 is located, and the fingerprint recognition unit 103 and the white pixel sub-unit 104 are arranged in a horizontal direction, and the fingerprint recognition unit 103 may be located at a horizontal left side of the white pixel sub-unit 104, and may also be located at a horizontal right side of the white pixel sub-unit 104.
As shown in fig. 2, the process of fingerprint identification is as follows through the connection manner of the circuits in the figure: the working voltage line keeps connected with working voltage, signals are input into the scanning line and the data line, the photosensitive diode has very small reverse leakage current, at the moment, the electric signal of the source electrode of the thin film transistor is related to the very small reverse leakage current, when the photosensitive diode receives light rays with different intensities reflected by fingers, reverse current corresponding to the light rays with different intensities reflected by the fingers can be generated, and at the moment, the size of the electric signal of the source electrode of the thin film transistor of the circuit can be influenced; through change or size of the source electrode electric signal of the thin film transistor that a plurality of fingerprint identification units that distribute among the RGBW module correspond just can generate fingerprint information.
The conditions for controlling the photodiode not to receive light may be: utilize other layers in the RGBW module, for example, all set up the liquid crystal molecule in the display screen to non-upset state through the switch element, at this moment, the light of inciding inside through upper polarizer can not produce the polarization phenomenon to, also can't pass lower floor's polarizer, also can't be received light by photodiode.
The conditions for controlling the photodiode to receive light and perform fingerprint recognition can be as follows: utilize other layers in the RGBW module, for example, all set up the liquid crystal molecule that red pixel subunit, green pixel subunit, blue pixel subunit correspond in the display screen into non-upset state through the switch element, the light that at this moment goes out through lower floor's polarizing plate incident can not produce the polarization phenomenon to, light also can't pass upper strata polarizing plate, also can not produce red, green, blue light. However, the liquid crystal molecules corresponding to the white pixel sub-units in the display screen are all set to be in a turning state through the switch unit, and at this time, the light rays incident out through the lower polarizing plate can generate a polarization phenomenon, so that the light rays can penetrate through the upper polarizing plate, and then the white light rays can be emitted. The white light can be used as a point light source, and the same is true. The area that white pixel subunit corresponds can launch out light, also can receive light equally, and photosensitive diode just can produce the different signal of telecommunication of size according to the power of the light that the finger reflected to generate fingerprint information.
It should be noted that fig. 2 is only an example of a connection manner of the photodiode and the thin film transistor in the fingerprint identification unit, and in practical applications, the photodiode and the resistor may be connected in series to transmit the current change generated by the photodiode according to the intensity of the light reflected by the finger through the data line. For example, a resistor is connected in series with the anode or cathode of the photodiode; after the shin bone of the photosensitive diode is irradiated by light rays with different intensities, reverse currents with different sizes can be generated, and similarly, the resistor divides a part of voltage according to the reverse currents with different sizes; at this time, the electrical signal of the source electrode of the thin film transistor is correspondingly changed; of course, the current change generated by the photodiode according to the intensity of the light reflected by the finger can be transmitted out through the data line by connecting the photodiode and the capacitor in parallel, which is not exemplified here.
Referring to fig. 3, which is an application scenario of fingerprint identification provided in the embodiment of the present application, a red region, a green region, a blue region, and a white region are disposed in an array on a filter layer. The area corresponding to the filter layer by the white pixel subunit is a white area (which can be understood as a colorless and transparent area with high light transmittance), and when fingerprint identification is performed, light emitted by a backlight passes through the white filter and irradiates a finger pressed on a glass cover plate of the display screen; the light is reflected to the inside of the display screen by fingers, the photosensitive diodes in the display screen can receive the reflected light, the strength of the light received by the photosensitive diodes at different positions is different due to different finger textures, and the photosensitive diodes generate electric signals related to the strength of the light according to the light with different strength; fingerprint information can be generated from the electrical signals fed back by the plurality of photodiodes embedded within the display screen.
The fingerprint identification unit that this application embodiment provided need not to set up the pointolite alone, utilizes white pixel subunit in the RGBW module to correspond the high printing opacity region that corresponds in the filter layer and can save the pointolite with the principle that goes to shine the finger that is launched out in a poor light.
Further, a red pixel sub-unit, a green pixel sub-unit, a blue pixel sub-unit, a white pixel sub-unit and a photodiode in the fingerprint identification unit in the RGBW unit are arranged transversely. As shown in fig. 1, the red pixel sub-unit, the green pixel sub-unit, the blue pixel sub-unit, the white pixel sub-unit 104 and the photodiode 107 in the fingerprint identification unit 103 are arranged laterally, and the area of the glass electrode corresponding to the white pixel sub-unit 104 is smaller than the area of the glass electrodes corresponding to the other three pixel sub-units.
Further, referring to fig. 4, fig. 4 is a wiring manner of a module supporting full-screen fingerprint identification according to an embodiment of the present disclosure, where each row of laterally arranged red pixel sub-units, green pixel sub-units, blue pixel sub-units, white pixel sub-units, and photodiodes share one scan line, and gates of thin film transistors respectively corresponding to each row of laterally arranged red pixel sub-units, green pixel sub-units, blue pixel sub-units, and white pixel sub-units are all connected to the scan line shared by the row;
each row of photosensitive diodes shares one data line;
each column of photodiodes shares a working voltage line.
It can be seen from the embodiment shown in fig. 4 that the layout of the scan lines and the data lines in the existing RGBW module is not affected, but a data line is added in the column added with the fingerprint identification unit to serve as a signal data line for fingerprint identification, and a working voltage line is added to ensure the normal work of the photodiode. In addition, since the white pixel sub-unit does not participate in the actual color, the area of the glass electrode corresponding to the white pixel sub-unit is reduced, and the color display of the conventional RGBW module is not affected. And the arrangement mode of pixel sub-units in the existing RGBW unit is not changed.
In practical applications, the scan lines, the data lines, and the operating voltage lines may be wired in other manners, which is not limited herein. In addition, fig. 4 is only for illustrating the wiring manner of the scan lines, the data lines, and the operating voltage lines, where the intersections exist between the scan lines and the data lines, and the scan lines in each row are not connected together, and are not connected with the scan lines in other rows as an independent line, and are not connected with the data lines and the operating voltage lines; similarly, each column of data lines as an independent line does not have cross connection with data lines of other columns, and also does not have cross connection with scanning lines and working voltage lines; the working voltage lines can all be led out independently, or can be led out independently in each row or each column, or all can be connected together, but the working voltage lines are not in cross connection with the scanning lines and the data lines.
The wiring mode of this application embodiment can see that, can also control the operating condition of every photodiode through the mode that scanning line, data line, working voltage line combine, for example, if can normally work if wanting to control arbitrary photodiode, as long as control the row scanning line, the row data line that photodiode belonged, the line working voltage line is opened simultaneously can. Certainly, in practical application, can also pass through the liquid crystal layer control photosensitive diode of the display screen that RGBW module place can receive light or can't receive light and control the data line output fingerprint information that photosensitive diode corresponds, do not do the restriction here.
In summary, when fingerprint identification is performed, it is necessary that the projection positions of the white pixel sub-units adjacent to the fingerprint identification unit on the display screen can emit light, and also can receive light reflected by a finger, and meanwhile, the photodiode can work normally.
Further, please refer to fig. 5, where fig. 5 is a structural entity diagram of another module supporting full-screen fingerprint identification according to an embodiment of the present application. The number of the RGBW units in the module supporting full-screen fingerprint identification is larger than or equal to the number of the photosensitive diodes. In the embodiment of the present application, the number of the fingerprint identification units 103 may be smaller than the number of the RGBW units. If the number of the fingerprint recognition units 103 can be smaller than the number of the RGBW units in the substrate 101, the fingerprint recognition unit 103 is correspondingly arranged on one RGBW unit 1021 and the fingerprint recognition unit 103 is not correspondingly arranged on one RGBW unit 1022 in the substrate 101. Of course, in practical applications, the number of the fingerprint recognition units 103 may also be equal to the number of the RGBW units, for example, the RGBW module supporting full-screen fingerprint recognition shown in fig. 1.
Further, referring to fig. 5, the RGBW units 1022 not provided with the fingerprint identification unit 103 are arranged in the original manner, and the area occupied by the red pixel sub-unit, the area occupied by the green pixel sub-unit, the area occupied by the blue pixel sub-unit, and the area occupied by the white pixel sub-unit 104 are equal. In the RGBW unit 1021 where the fingerprint identification unit 103 is correspondingly arranged, the area occupied by the white pixel subunit 104 is smaller than that occupied by the red pixel subunit; the area occupied by the red pixel subunit, the area occupied by the green pixel subunit and the area occupied by the blue pixel subunit are equal.
It should be noted that, in fig. 1 and fig. 5, only the white pixel sub-unit 104 in the RGBW unit is identified, and the red pixel sub-unit, the green pixel sub-unit, and the blue pixel sub-unit are not identified, and in practical applications, the positions of the red pixel sub-unit, the green pixel sub-unit, and the blue pixel sub-unit may be set according to practical situations. Also, the examples shown in fig. 1 and 5 do not indicate that the RGBW module includes only the number of RGBW cells shown in the figures.
Further, referring to fig. 1 or fig. 5, the photodiode 107 is located at the right side of the white pixel sub-unit 104.
In the embodiment shown in fig. 1 or fig. 5, the fingerprint identification unit 103 is disposed on the right side of the white pixel sub-unit 104, and in practical applications, the fingerprint identification unit 103 may also be disposed on the lower side of the white pixel sub-unit 104, the upper side of the white pixel sub-unit 104, or the left side of the white pixel sub-unit 104.
In the RGBW unit provided in the embodiment of the present application, the red pixel sub-unit, the green pixel sub-unit, the blue pixel sub-unit, and the white pixel sub-unit are arranged laterally, and the white pixel sub-units in any two adjacent rows of RGBW units are not located in the same column.
The embodiment of the present application still provides a display screen, including any kind of RGBW module that supports full-screen fingerprint identification that provides in the embodiment of the present application, because the RGBW module that provides in the embodiment of the present application mainly includes lower base plate layer, in actual display screen, can also include: upper substrate, polarizer, filter, liquid crystal molecular layer, backlight, etc.
The embodiment of the application further provides a terminal device, which comprises any one of the display screens provided by the embodiment of the application, and in practical application, the terminal device can be a mobile phone, a notebook, a tablet computer and the like. And are not intended to be limiting herein.
Fig. 6 is a schematic flow chart of an implementation process of a fingerprint identification method provided in the embodiment of the present application, where the method is applied to a terminal device where each module supporting full-screen fingerprint identification is located, and as shown in the drawing, the method may include the following steps:
step S601, after receiving the instruction of fingerprint identification, monitoring the contact information on the display screen of the terminal equipment.
In this embodiment of the application, the instruction for receiving the fingerprint identification may be: the unlocking instruction may be, for example, an unlocking instruction in which the user touches a display screen of the terminal device in a black screen state, or an instruction of fingerprint recognition that is sent by the user through a preset key or a preset button on a touch screen.
After receiving the instruction of fingerprint identification, the contact information on the display screen of the terminal equipment can be monitored. If the instruction identified by the instruction indicates that the unlocking instruction is in a black screen state, the user touches the display screen of the terminal device, and it can be considered that after or at the same time of receiving the instruction identified by the fingerprint, the contact information on the display screen of the terminal device is also monitored.
Because the fingerprint identification method that provides in this application embodiment need provide the pointolite through the built-in fingerprint identification unit and the high printing opacity of the white pixel subunit in the display module assembly, can realize the fingerprint identification of this application embodiment, consequently, after receiving fingerprint identification's instruction, still include:
and switching the display screen of the terminal equipment into a fingerprint identification mode, wherein in the fingerprint identification mode, liquid crystal molecules corresponding to white pixel subunits in RGBW units in the display screen are in an overturning state.
In this embodiment, the liquid crystal molecules corresponding to the white pixel sub-unit are turned over to indicate that the light emitted from the lower polarizing plate corresponding to the white pixel sub-unit can generate polarization, so that the light can pass through the upper polarizing plate, and then the white light can be emitted, and the white light can be used as a point light source.
Step S602, after the contact information on the display screen of the terminal equipment is monitored, a fingerprint identification area is determined based on the position of the contact information.
In this application embodiment, in fact, all can carry out fingerprint identification on terminal equipment's the whole display screen, the user can press the finger in the optional position of display screen to the fingerprint one side that makes hugs closely the glass apron of display screen. When the user presses the finger, touch point information is generated on the touch screen, namely the information of the user touching the display screen. After the contact information on the display screen of the terminal equipment is monitored, the fingerprint identification area can be determined based on the position of the contact information.
As another embodiment of the present application, the determining a fingerprint identification area based on the position of the contact information includes:
based on the position of the contact information, taking the minimum circumscribed rectangle of the area of the contact information as a fingerprint identification area;
or based on the position of the contact information, amplifying the minimum circumscribed rectangle of the region of the contact information by a preset multiple to be used as a fingerprint identification region.
In this embodiment of the present application, fingerprint information is generated in an area where a finger of a user contacts a glass cover plate of a display screen, and fingerprint information is not generated in an area where the finger of the user does not contact the glass cover plate of the display screen, so the area of the contact information is an area for fingerprint identification, however, since in this embodiment of the present application, a point light source area corresponding to a fingerprint identification unit of the whole screen emits light, meanwhile, each row of fingerprint identification units in the fingerprint identification unit shares a scan line, each column of fingerprint identification units shares a data line, each column of fingerprint identification units shares a working voltage line, in order to reduce the data amount of an obtained original electrical signal, the area for collecting the electrical signal needs to be set to be a rectangular area. The rectangular area needs to include a contact point area, which requires a minimum bounding rectangle of the contact point information area as a fingerprint identification area. Of course, in practical applications, the minimum circumscribed rectangle of the region of the contact information may be enlarged by a preset multiple based on the position of the contact information, and then the minimum circumscribed rectangle may be used as the fingerprint identification region.
Step S603, turning on the fingerprint identification unit in the fingerprint identification area, and turning off the fingerprint identification unit in an area other than the fingerprint identification area in the display screen.
The step of turning on the fingerprint identification unit in the fingerprint identification area and turning off the fingerprint identification unit in the area outside the fingerprint identification area in the display screen includes:
starting a working voltage line, a scanning line and a data line of a fingerprint identification unit of the fingerprint identification area;
turning off at least one of the following in an area of the display screen outside the fingerprint identification area: working voltage line, scanning line, data line.
In the embodiment of the present application, as shown in fig. 2, the conditions for the normal operation of the photodiode are as follows: the scanning line, the data line and the working voltage line of the photosensitive diodes are all turned on, and the working voltage line of each column of photosensitive diodes is shared. The data lines of each row of the photosensitive diodes are shared, and the scanning of each row of the photosensitive diodes is shared, so that the fingerprint identification area covers which rows of the fingerprint identification units, and the scanning lines corresponding to which rows of the fingerprint identification units are started; and the fingerprint identification area covers the columns of fingerprint identification units, and then the data lines and the working voltage lines corresponding to the columns of fingerprint identification units are started. Of course, the fingerprint identification unit in the area outside the fingerprint identification area needs to turn off one or more of the working voltage line, the scanning line and the data line, so as not to output the electric signal. Thus, when the fingerprint information is generated by the electric signal transmitted through the data line, only the electric signal in the fingerprint identification area can be received. It is not necessary to generate fingerprint information from the electric signal on the entire screen, thereby improving the process of generating fingerprint information.
It should be noted that, when performing fingerprint identification, the liquid crystal molecules corresponding to the red pixel subunit, the green pixel subunit, and the blue pixel subunit in the area corresponding to the fingerprint identification area are set to be in a non-inverted state by the switch unit, and at this time, the light incident through the lower polarizing plate does not generate a polarization phenomenon, and thus, the light cannot pass through the upper polarizing plate, and red, green, and blue light is not generated.
Step S604, collecting fingerprint information of the user through the fingerprint identification unit of the fingerprint identification area.
According to the embodiment of the application, white light is emitted as a point light source by controlling the pixel units in the whole display screen; meanwhile, the photosensitive diodes in the fingerprint identification area are controlled to be in a working state, and the photosensitive diodes outside the fingerprint identification area are controlled to be in a non-working state; the fingerprint information is generated only from the electric signal in the fingerprint identification area, and the original data volume is reduced, and the data volume is the area containing the fingerprint information, so that the fingerprint identification efficiency can be improved.
It should be understood that, the sequence numbers of the steps in the foregoing embodiments do not imply an execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
Fig. 7 is a schematic block diagram of a terminal device according to an embodiment of the present application, and only a portion related to the embodiment of the present application is shown for convenience of description.
The terminal device 7 may be a software unit, a hardware unit or a combination of software and hardware unit built in a mobile phone, a tablet computer, a notebook computer and other terminal devices, and may also be integrated into the mobile phone, the tablet computer, the notebook computer and other terminal devices as an independent pendant.
The terminal device 7 includes:
the monitoring module 71 is configured to monitor contact information on a display screen of the terminal device after receiving the instruction of fingerprint identification;
a fingerprint identification area determination module 72, configured to determine a fingerprint identification area based on a position of contact information after the contact information is monitored to appear on a display screen of the terminal device;
a fingerprint identification function starting module 73, configured to start a fingerprint identification unit in the fingerprint identification area, and close a fingerprint identification unit in an area outside the fingerprint identification area in the display screen;
and the acquisition module 74 is used for acquiring the fingerprint information of the user through the fingerprint identification unit of the fingerprint identification area.
Optionally, the fingerprint identification area determination module 72 is further configured to:
based on the position of the contact information, taking the minimum circumscribed rectangle of the area of the contact information as a fingerprint identification area;
or based on the position of the contact information, amplifying the minimum circumscribed rectangle of the region of the contact information by a preset multiple to be used as a fingerprint identification region.
Optionally, the fingerprint identification function starting module 73 is further configured to:
starting a working voltage line, a scanning line and a data line of a fingerprint identification unit of the fingerprint identification area;
turning off at least one of the following in an area of the display screen outside the fingerprint identification area: working voltage line, scanning line, data line.
Optionally, the monitoring module 71 is further configured to:
after receiving a fingerprint identification instruction, switching a display screen of the terminal device into a fingerprint identification mode, wherein in the fingerprint identification mode, liquid crystal molecules corresponding to white pixel subunits in RGBW units in the display screen are in an overturning state.
It is obvious to those skilled in the art that, for convenience and simplicity of description, the foregoing division of the functional units and modules is merely used as an example, and in practical applications, the foregoing function distribution may be performed by different functional units and modules as needed, that is, the internal structure of the terminal device is divided into different functional units or modules to perform all or part of the above-described functions. Each functional unit and module in the embodiments may be integrated in one processing unit, or each unit may exist alone physically, or two or more units are integrated in one unit, and the integrated unit may be implemented in a form of hardware, or in a form of software functional unit. In addition, specific names of the functional units and modules are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present application. The specific working processes of the units and modules in the above-mentioned apparatus may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
Fig. 8 is a schematic block diagram of a terminal device according to another embodiment of the present application. As shown in fig. 8, the terminal device 8 of this embodiment includes: one or more processors 80, a memory 81, and a computer program 82 stored in the memory 81 and executable on the processors 80. The processor 80, when executing the computer program 82, implements the steps in the above-described embodiments of the fingerprint identification method, such as the steps S601 to S604 shown in fig. 6. Alternatively, the processor 80, when executing the computer program 82, implements the functions of the modules/units in the terminal device embodiments described above, such as the functions of the modules 71 to 74 shown in fig. 7.
Illustratively, the computer program 82 may be partitioned into one or more modules/units that are stored in the memory 81 and executed by the processor 80 to accomplish the present application. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution of the computer program 82 in the terminal device 8. For example, the computer program 82 may be divided into a monitoring module, a fingerprinting area determination module, a fingerprinting function activation module, an acquisition module.
The monitoring module is used for monitoring contact information on a display screen of the terminal equipment after receiving a fingerprint identification instruction;
the fingerprint identification area determination module is used for determining a fingerprint identification area based on the position of contact information after the contact information on the display screen of the terminal equipment is monitored;
the fingerprint identification function starting module is used for starting the fingerprint identification unit in the fingerprint identification area and closing the fingerprint identification unit in the area outside the fingerprint identification area in the display screen;
the acquisition module is used for acquiring the fingerprint information of the user through the fingerprint identification unit of the fingerprint identification area.
Other modules or units can be referred to the description of the embodiment shown in fig. 7, and are not described again here.
The terminal device includes, but is not limited to, a processor 80 and a memory 81. Those skilled in the art will appreciate that fig. 8 is only one example of a terminal device 8, and does not constitute a limitation of terminal device 8, and may include more or less components than those shown, or combine certain components, or different components, e.g., the terminal device may also include input devices, output devices, network access devices, buses, etc.
The Processor 80 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The storage 81 may be an internal storage unit of the terminal device 8, such as a hard disk or a memory of the terminal device 8. The memory 81 may also be an external storage device of the terminal device 8, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like, which are provided on the terminal device 8. Further, the memory 81 may also include both an internal storage unit and an external storage device of the terminal device 8. The memory 81 is used for storing the computer program and other programs and data required by the terminal device. The memory 81 may also be used to temporarily store data that has been output or is to be output.
In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or illustrated in a certain embodiment.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
In the embodiments provided in the present application, it should be understood that the disclosed terminal device and method may be implemented in other ways. For example, the above-described terminal device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical function division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application 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, and can also be realized in a form of a software functional unit.
The integrated modules/units, if implemented in the form of software functional units and sold or used as separate products, may be stored in a computer readable storage medium. Based on such understanding, all or part of the flow in the method of the embodiments described above can be realized by a computer program, which can be stored in a computer-readable storage medium and can realize the steps of the embodiments of the methods described above when the computer program is executed by a processor. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like. It should be noted that the computer readable medium may contain other components which may be suitably increased or decreased as required by legislation and patent practice in jurisdictions, for example, in some jurisdictions, computer readable media which may not include electrical carrier signals and telecommunications signals in accordance with legislation and patent practice.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (9)
1. The utility model provides a support full-screen fingerprint identification's module which characterized in that includes:
the fingerprint identification device comprises a substrate and fingerprint identification units which are arranged on the substrate in an array manner;
the fingerprint recognition unit includes: a photodiode, a thin film transistor corresponding to the photodiode;
the anode of the photosensitive diode is connected with a working voltage line, and the working voltage line is used for providing a bias voltage for the photosensitive diode to work;
the cathode of the photosensitive diode is connected with the drain electrode of the thin film transistor; the grid electrode of the thin film transistor is connected with a scanning line, and the scanning line is used for controlling the on-off state of the thin film transistor;
the source electrode of the thin film transistor is connected with a data line, and the data line is used for outputting an electric signal generated when the photosensitive diode receives light reflected by a finger;
RGBW units distributed in an array on the substrate;
a red pixel sub-unit, a green pixel sub-unit, a blue pixel sub-unit, a white pixel sub-unit and photodiodes in the fingerprint identification unit in the RGBW unit are transversely arranged; and embedding a fingerprint identification unit into the area where the white pixel subunit is positioned.
2. The module for supporting full screen fingerprint identification of claim 1, wherein each row of the red pixel sub-unit, the green pixel sub-unit, the blue pixel sub-unit, the white pixel sub-unit and the photodiode arranged in the transverse direction share one scanning line, and the gates of the thin film transistors respectively corresponding to the red pixel sub-unit, the green pixel sub-unit, the blue pixel sub-unit and the white pixel sub-unit arranged in the transverse direction are all connected to the scanning line shared by the row;
each row of photosensitive diodes shares one data line;
each column of photodiodes shares a working voltage line.
3. The module for supporting full screen fingerprint identification of claim 1, wherein the number of RGBW cells in the module for supporting full screen fingerprint identification is greater than or equal to the number of photodiodes.
4. A terminal device, comprising:
a module supporting full screen fingerprinting according to any one of claims 1 to 3.
5. A fingerprint identification method applied to the terminal device according to claim 4, the fingerprint identification method comprising:
after receiving a fingerprint identification instruction, monitoring contact information on a display screen of the terminal equipment;
after the contact information on the display screen of the terminal equipment is monitored, determining a fingerprint identification area based on the position of the contact information;
starting a fingerprint identification unit of the fingerprint identification area, and closing the fingerprint identification unit of the area outside the fingerprint identification area in the display screen;
and collecting the fingerprint information of the user through the fingerprint identification unit of the fingerprint identification area.
6. The fingerprint recognition method of claim 5, wherein the determining a fingerprint recognition area based on the location of the contact information comprises:
based on the position of the contact information, taking the minimum circumscribed rectangle of the area of the contact information as a fingerprint identification area;
or based on the position of the contact information, amplifying the minimum circumscribed rectangle of the region of the contact information by a preset multiple to be used as a fingerprint identification region.
7. The fingerprint recognition method of claim 5, wherein the turning on the fingerprint recognition unit of the fingerprint recognition area and the turning off the fingerprint recognition unit of the area outside the fingerprint recognition area in the display screen comprises:
starting a working voltage line, a scanning line and a data line of a fingerprint identification unit of the fingerprint identification area;
turning off at least one of the following in an area of the display screen outside the fingerprint identification area: working voltage line, scanning line, data line.
8. The fingerprint recognition method of claim 5, further comprising, after receiving the instruction for fingerprint recognition:
and switching the display screen of the terminal equipment into a fingerprint identification mode, wherein in the fingerprint identification mode, liquid crystal molecules corresponding to white pixel subunits in RGBW units in the display screen are in an overturning state.
9. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program which, when executed by one or more processors, implements the steps of the method according to any one of claims 5 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810664376.0A CN108615032B (en) | 2018-06-25 | 2018-06-25 | Module, terminal equipment and fingerprint identification method supporting full-screen fingerprint identification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810664376.0A CN108615032B (en) | 2018-06-25 | 2018-06-25 | Module, terminal equipment and fingerprint identification method supporting full-screen fingerprint identification |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108615032A CN108615032A (en) | 2018-10-02 |
| CN108615032B true CN108615032B (en) | 2021-06-15 |
Family
ID=63665562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810664376.0A Active CN108615032B (en) | 2018-06-25 | 2018-06-25 | Module, terminal equipment and fingerprint identification method supporting full-screen fingerprint identification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108615032B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112868223B (en) * | 2018-10-27 | 2022-06-10 | 华为技术有限公司 | Sensor and display device |
| CN111261118B (en) * | 2018-11-30 | 2021-06-29 | 北京小米移动软件有限公司 | Liquid crystal display screen and approach light implementation device and method applied to liquid crystal display screen |
| US11244135B2 (en) | 2019-08-01 | 2022-02-08 | Novatek Microelectronics Corp. | Electronic circuit having display driving function, touch sensing function and fingerprint sensing function |
| CN113544695B (en) * | 2020-02-19 | 2024-04-12 | 京东方科技集团股份有限公司 | Photosensitive detection circuit, optical signal detection method, device and system and display device |
| CN111652188A (en) * | 2020-06-24 | 2020-09-11 | 上海思立微电子科技有限公司 | Photosensitive sensor, optical fingerprint sensor and electronic equipment manufactured by TFT (thin film transistor) process |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105304656B (en) * | 2014-06-23 | 2018-06-22 | 上海箩箕技术有限公司 | Photoelectric sensor |
| CN105095877B (en) * | 2015-08-12 | 2018-09-04 | 京东方科技集团股份有限公司 | Organic light-emitting diode display substrate and its light reflective surface structural recognition method |
| CN106022276B (en) * | 2016-05-25 | 2019-06-07 | 京东方科技集团股份有限公司 | Fingerprint recognition device and preparation method thereof, display device, display device |
| CN106355136B (en) * | 2016-07-11 | 2018-07-17 | 京东方科技集团股份有限公司 | A kind of fingerprint recognition display device, its production method and driving method |
| CN107884968A (en) * | 2016-09-30 | 2018-04-06 | 北京小米移动软件有限公司 | Array base palte and preparation method thereof, display panel, display device and electronic equipment |
| CN108121939A (en) * | 2016-11-28 | 2018-06-05 | 南昌欧菲生物识别技术有限公司 | Organic light-emitting diode (OLED) display screen fingerprint identification device and electronic equipment |
| CN106657663A (en) * | 2017-01-04 | 2017-05-10 | 捷开通讯(深圳)有限公司 | Method and device for extracting information in image of mobile terminal |
| CN106874892B (en) * | 2017-03-22 | 2020-12-18 | 联想(北京)有限公司 | Fingerprint detection method and electronic equipment |
| CN107526474B (en) * | 2017-08-31 | 2021-12-28 | 京东方科技集团股份有限公司 | Pressure sensing module integrated with fingerprint identification function, driving method and display device |
| CN107562356B (en) * | 2017-08-31 | 2020-05-12 | Oppo广东移动通信有限公司 | Fingerprint identification positioning method and device, storage medium and electronic equipment |
-
2018
- 2018-06-25 CN CN201810664376.0A patent/CN108615032B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN108615032A (en) | 2018-10-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108615032B (en) | Module, terminal equipment and fingerprint identification method supporting full-screen fingerprint identification | |
| CN108615033B (en) | Module, terminal equipment and fingerprint identification method supporting full-screen fingerprint identification | |
| CN107908034B (en) | Array substrate, touch display panel and touch display panel driving method | |
| CN108664895B (en) | Display device and fingerprint identification method thereof | |
| CN108415188B (en) | Liquid crystal display panel, display device and fingerprint unlocking method thereof | |
| CN110163058B (en) | Fingerprint identification display module and fingerprint identification method | |
| CN108828816B (en) | RGBW module, display screen and terminal equipment supporting full-screen fingerprint identification | |
| US9589170B2 (en) | Information detection and display apparatus, and detecting method and displaying method thereof | |
| CN107958193B (en) | Display module and electronic equipment | |
| US20170371213A1 (en) | Array substrate and drive method thereof, display panel and display device | |
| EP3352221A2 (en) | Array substrate and fabricating method thereof, display panel, display apparatus, electronic device, computer program and recording medium | |
| EP2256597B1 (en) | Information input device, information input method, information input-output device, storage medium, and electronic unit | |
| JP5331639B2 (en) | Touch panel | |
| US20180260056A1 (en) | Optical-capacitive sensor panel device and method for manufacturing same | |
| CN104914602A (en) | Display device and array substrate | |
| US20220086378A1 (en) | Electronic device and imaging method thereof | |
| CN105184247A (en) | Fingerprint identification member, identification method, display member and display device | |
| US20210026995A1 (en) | Electronic device, display system and integrated control device thereof, and security verification method | |
| CN107958185B (en) | Biological characteristic information sensing method of display module | |
| CN112236774B (en) | Grain recognition device and driving method thereof | |
| US10691277B2 (en) | Touch panel, method for driving the same, and display device | |
| CN101937293A (en) | Message input device and display device | |
| EP3153917B1 (en) | Liquid crystal display assembly and electronic device | |
| CN111025722A (en) | Display panel and display device | |
| CN110308771B (en) | Electronic device panel, photoelectric processing unit, electronic device and processing method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |