CN109753952A - One kind having full frame identification and detection function circuit and its equipment - Google Patents
One kind having full frame identification and detection function circuit and its equipment Download PDFInfo
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- CN109753952A CN109753952A CN201910190372.8A CN201910190372A CN109753952A CN 109753952 A CN109753952 A CN 109753952A CN 201910190372 A CN201910190372 A CN 201910190372A CN 109753952 A CN109753952 A CN 109753952A
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Abstract
The invention discloses one kind to have full frame identification and detection function circuit and its equipment, belong to electronic technology field, the present invention is alternately worked by setting display driving and Scanning Detction driving, and sequence is in no particular order, since transistor shares a scan line, open and close simultaneously.In the case where not increasing original LCD light shield, fingerprint Identification sensor and touch detection sensor are embedded in display equipment, realize full screen fingerprint recognition and touch detection, the integrated level that terminal shows product can be improved, reduce production cost, make terminal show that product especially portable electronic device is more frivolous simultaneously, obtains more excellent appearance, improve the user experience.
Description
Technical field
The present invention relates to electronic circuit fields, and in particular to one kind has full frame identification and detection function circuit and its sets
It is standby.
Background technique
Currently, display equipment in integrated fingerprint identification sensor, touch control detection device, and realize fingerprint identification function,
The method of touch detection function is constantly suggested.Therefore technical research is needed in the case where not increasing original LCD light shield,
Display equipment is embedded in fingerprint Identification sensor and touch detection sensor, realizes full screen fingerprint recognition and touch detection, can
To improve the integrated level that terminal shows product, production cost is reduced, while terminal being made to show product especially portable electronic
Equipment is more frivolous, obtains more excellent appearance, and improving the user experience is following trend.It needs according to above-mentioned
Technical effect carries out carrying out innovation to technology, it is therefore desirable to design a kind of display screen while there is real function also to have
The display equipment of fingerprint recognition and touch control.
Summary of the invention
The present invention is directed to open one kind, and there is full frame identification and detection function circuit and its equipment, the present invention not to increase original
In the case where having LCD light shield, it is embedded in fingerprint Identification sensor and touch detection sensor in display equipment, realizes that full screen refers to
The integrated level that terminal shows product can be improved in line identification and touch detection, reduces production cost, while terminal display is produced
Product especially portable electronic device is more frivolous, obtains more excellent appearance, improves the user experience.
The technical scheme adopted by the invention is as follows:
One kind having full frame identification and detection function circuit, and the identification and detection function circuit include multistage recognition detection list
Member, n-th grade of recognition detection unit include the first display module, the second display module, third display module and control module；It is described
First display module is connect through the second display module, third display module with control module, and first display module, second show
Show that module, third display module and control module are electrically connected with SCAN scanning end, first display module and the first DATA
The connection of data line end, second display module are connect with the second DATA line end, the third display module and third
The connection of DATA line end, the control module are connect with VCOM/TP line end；
Wherein, the first display module, the second display module and third display module are for driving display screen to show and constitute identification
The capacitance sensor of detection；
Control module is for driving display screen common electrode signal, driving fingerprint recognition and touch control detection signal, transmission fingerprint to know
Other data and touch data.
Further, first display module includes the first transistor, the first pixel electrode, first capacitor and the 5th electricity
Hold, the grid of the first transistor be electrically connected with SCAN scanning line end, drain and connect with the first DATA line end, source electrode and
The connection of first pixel electrode, the one end of first pixel electrode as first capacitor, the other end of the first capacitor are public affairs
Common electrode, one end of the 5th capacitor are that the public electrode other end is connect with the first DATA line end.
Further, second display module includes second transistor, the second pixel electrode, the second capacitor and the 6th electricity
Hold, the grid of the second transistor be electrically connected with SCAN scanning line end, drain and connect with the second DATA line end, source electrode and
The connection of second pixel electrode, the one end of second pixel electrode as the second capacitor, the other end of second capacitor are public affairs
Common electrode, one end of the 6th capacitor are that the public electrode other end is connect with the second DATA line end.
Further, the third display module includes third transistor, third pixel electrode, third capacitor and the 7th electricity
Hold, the grid of the third transistor be electrically connected with SCAN scanning line end, drain and connect with the second DATA line end, source electrode and
The connection of third pixel electrode, the one end of the third pixel electrode as the second capacitor, the other end of the third capacitor are public affairs
Common electrode, one end of the 7th capacitor are that the public electrode other end is connect with third DATA line end.
Further, the control module include the 4th transistor and the 4th capacitor, the grid of the 4th transistor with
The electrical connection of SCAN scanning end, drain electrode are connect with VCOM/TP line end, and source electrode is connect with public electrode, one end of the 4th capacitor
Line end is scanned with SCAN for the public electrode other end to be electrically connected.
One kind having full frame identification and detection function equipment, and the equipment includes multiple recognition detection piecemeals, each identification
Detect piecemeal respectively with the first DATA line end, the second DATA line end, third DATA line end and VCOM/TP line
End connection.
Further, the recognition detection piecemeal includes the first DATA line, the second DATA line, the 3rd DATA number
It is thin according to line, VCOM/TP control line, public electrode, three pieces of pixel electrodes, first film transistor, the second thin film transistor (TFT), third
Film transistor and the 4th thin film transistor (TFT), three pieces of pixel electrodes are arranged in public electrode either above or below, three pieces of pixels
Electrode is electrically connected with first film transistor, the second thin film transistor (TFT) and third thin film transistor (TFT) respectively, and the first film is brilliant
Body pipe is connect with the first DATA line, and second thin film transistor (TFT) is connect with the second DATA line, the third film
Transistor is connect with third DATA line, and the 4th thin film transistor (TFT) is connect with VCOM/TP control line and public electrode.
Further, three pieces of pixel electrodes include the first pixel electrode, the second pixel electrode and third pixel electrode,
First pixel electrode is connect with first film transistor, and second pixel electrode is connect with the second thin film transistor (TFT), institute
Third pixel electrode is stated to connect with third thin film transistor (TFT).
It is had the advantage that using technical solution of the present invention
1. the present invention by setting display driving with Scanning Detction drive alternately work, sequence in no particular order, due to every
4 transistors of a recognition detection unit share a scan line, open and close simultaneously.When showing driving, SCAN scanning
Line is sent into high level and opens transistor, and pixel electrode is sent into the signal voltage of display picture by IC by DATA line,
Sensor is sent into VCOM voltage by VCOM/TP line by IC as public electrode；When carrying out fingerprint recognition and touch-control scans,
Sensor is sent into Scanning Detction signal by VCOM/TP line by IC as capacitance sensor and carries out fingerprint recognition processing or touch
Detection, pixel electrode is sent by IC by DATA line at this time and the consistent same signal that drives of Scanning Detction signal intensity guarantees picture
Voltage difference is consistent always when voltage difference drives with display between plain electrode and Sensor, to not influence display effect, drops simultaneously
Interference of the low data line to fingerprint recognition signal or touch detection signal passes through after this line completes Scanning Detction, then by IC
DATA line is sent into the signal voltage of display picture to pixel electrode, is sent into display voltage to Sensor by VCOM/TP line.
After the completion of display driving and Scanning Detction driving all, the TFT that low level closes this line is sent by SCAN scan line.Next line
Driving repeat appeal movement, carry out display and fingerprint recognition and touch detection that full screen is completed in work line by line in this way.
2. the present invention in the case where not increasing original LCD light shield, display equipment be embedded in fingerprint Identification sensor and
Touch detection sensor realizes full screen fingerprint recognition and touch detection, and the integrated level that terminal shows product can be improved, and reduces
Production cost, while terminal being made to show that product especially portable electronic device is more frivolous, it obtains more excellent outer
It sees, improves the user experience.
Detailed description of the invention
Fig. 1 is a kind of recognition detection unit schematic diagram with full frame identification and detection function circuit of the present invention；
Fig. 2 is of the invention a kind of with full frame identification and detection function circuit module block diagram；
Fig. 3 is a kind of recognition detection unit drive waveforms schematic diagram with full frame identification and detection function circuit of the present invention；
Fig. 4 is a kind of Sensor partitioned organization schematic diagram with full frame identification and detection function equipment of the invention；
Fig. 5 is a kind of Sensor piecemeal schematic diagram with full frame identification and detection function equipment of the invention；
Fig. 6 is that one kind of the invention has full frame identification and another embodiment Sensor partitioned organization signal of detection function equipment
Figure；
Fig. 7 is that one kind of the invention has full frame identification and another embodiment Sensor piecemeal schematic diagram of detection function equipment.
Main element symbol description
| First display module 1 | Second display module 2 | Third display module 3 |
| Control module 4 | Public electrode 5 | Pixel electrode 6 |
| First film transistor 7 | Second thin film transistor (TFT) 8 | Third thin film transistor (TFT) 9 |
| 4th thin film transistor (TFT) 10 |
The present invention that the following detailed description will be further explained with reference to the above drawings.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It should be noted that the term used in embodiments of the present invention is only merely for the mesh of description specific embodiment
, it is not intended to limit the invention." the one of the embodiment of the present invention and singular used in the attached claims
Kind ", " described " and "the" are also intended to including most forms, unless the context clearly indicates other meaning.It is also understood that this
Term "and/or" used herein refers to and includes one or more associated any or all possible group for listing project
It closes.
Term " includes " in description and claims of this specification and above-mentioned attached drawing and " having " and they appoint
What is deformed, it is intended that is covered and non-exclusive is included.Such as contain the process, method, system, production of a series of steps or units
Product or equipment are not limited to listed step or unit, but optionally further comprising the step of not listing or unit, or
Optionally further comprising other step or units intrinsic for these process, methods, product or equipment.
It should be noted that the embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings,
In which the same or similar labels are throughly indicated same or similar element or elements with the same or similar functions.Under
Face is exemplary by reference to the embodiment that attached drawing describes, and for explaining only the invention, and cannot be construed to of the invention
Limitation.
Following disclosure provides many different embodiments or example is used to realize different structure of the invention.For letter
Change disclosure of the invention, hereinafter the component of specific examples and setting are described.Certainly, they are merely examples, and
It is not intended to limit the present invention.In addition, the present invention can in different examples repeat reference numerals and/or letter.It is this heavy
It is for purposes of simplicity and clarity, itself not indicate the relationship between discussed various embodiments and/or setting again.
Embodiment 1
Referring to Fig. 2, being that one kind provided in an embodiment of the present invention has full frame identification and detection function circuit module block diagram, such as figure
Shown in 2, the identification and detection function circuit include multistage recognition detection unit, and a recognition detection unit is as display screen
Minimum display unit, so that the driving that a recognition detection unit can individually complete display screen is shown, while can also
To complete the detection of identification and touch to fingerprint.N-th grade of recognition detection unit includes that the first display module 1, second shows mould
First display module 1 described in block 2, third display module 3 and control module 4. through the second display module 2, third display module 3 with
Control module connection 4, first display module 1, the second display module 2, third display module 3 and control module 4 with
First display module 1 described in SCAN scanning end electrical connection connect the second display mould described in the first DATA line end DATA1
Block 2 connect third display module 3 described in the second DATA line end DATA2 and connect with third DATA line end DATA3,
The control module 4 is connect with VCOM/TP line end.In display screen display, the first display module, the second display module, third
Display module and control module be used to driving display screen show, completion be display screen display driving function.In needs pair
When fingerprint recognition and touch detection, it is also used for Scanning Detction touch data simultaneously with scanning recognition finger print data for controlling, from
And a circuit is made to realize display, fingerprint recognition and touch detection, so that three functions are combined together well, make
The integrated level that terminal shows product is obtained, production cost is reduced, while terminal being made to show product especially portable electronic device
It is more frivolous, more excellent appearance is obtained, is improved the user experience.
Control module 4 is used to show and transmit common electrode signal to control display screen, mainly passes through VCOM/TP line end
Input common electrode signal.Control module 4 is also used to the signal of transmission fingerprint identification and touch control detection simultaneously, in detection in fingerprint
Data and touch control detection data after need to transmit data in finger-mark check equipment and on displaying screen controller.
As can be seen that there is full frame identification and detection function circuit in technical solution of the embodiment of the present invention, wherein each know
Other detection unit includes the first display module, the second display module, third display module and control module.
Referring to Fig. 1, one kind to provide in the embodiment of the present invention has full frame identification and detection function circuit diagram.
Each circuit module is specifically introduced below.
First display module 1 includes the first transistor T1, first capacitor C1 and the 5th capacitor C5.The first crystal
The grid of pipe T1 is electrically connected with SCAN scanning end, and drain electrode is connect with the first DATA line end DATA1, source electrode and first capacitor C1
One end connection.The other end of the first capacitor C1 is public electrode, and one end of the 5th capacitor C5 is public electrode, separately
One end is connect with the first DATA line end DATA1.The opening and closing of the first transistor T1 are controlled by SCAN scanning end.The
One DATA line is used for transmission display drive signals and with drive signal.
Second display module 2 includes second transistor T2, the second capacitor C2 and the 6th capacitor C6, second crystal
The grid of pipe T2 is electrically connected with SCAN scanning end, and drain electrode is connect with the second DATA line end DATA2, source electrode and the second capacitor C2
One end connection.The other end of the second capacitor C2 is public electrode.One end of the 6th capacitor C6 is public electrode, separately
One end is connect with the second DATA line end DATA2.The opening and closing of second transistor T2 are controlled by SCAN scanning end, the
Two DATA line DATA2 are used for transmission display drive signals and with drive signals.
The third display module 3 includes third transistor T3, third capacitor C3 and the 7th capacitor C7, the third crystal
The grid of pipe T3 is electrically connected with SCAN scanning end, and drain electrode is connect with the end third DATA line DATA3, source electrode and third capacitor C3
One end connection, the other end of the third capacitor C3 is public electrode, and one end of the 7th capacitor C7 is public electrode, separately
One end is connect with third DATA line end DATA3.The opening and closing of third transistor T3 are controlled by SCAN scanning end.The
Three DATA line DATA3 are used for transmission display drive signals and with drive signals.
The control module 4 include the 4th transistor T4 and the 4th capacitor C4, the grid of the 4th transistor T4 with
The electrical connection of SCAN scanning end, drain electrode are connect with VCOM/TP line end, and source electrode is connect with public electrode, and the one of the 4th capacitor C4
End is public electrode, and the other end is electrically connected with SCAN scanning end.VCOM/TP line end is used for transmission public electrode when showing driving
Signal, detection signal and inductive signal, transmission fingerprint identification data and touching are used for transmission in fingerprint recognition and touch detection
Touch data.
The switch of piece scan line SCAN control a pixel TFT and Sensor TFT；C1, C2, C3 are respectively three sub-pixels
Pixel electrode and the public electrode capacitor, including pixel capacitance, liquid crystal capacitance etc. that constitute；C4, C5, C6, C7 are respectively public
The capacitor that electrode and SCAN, DATA1, DATA2, DATA3 are constituted；The signal of public electrode Sensor is transmitted by VCOM/TP cabling.
The present invention by setting display driving with Scanning Detction drive alternately work, sequence in no particular order, due to
4 transistors of each recognition detection unit share a scan line, open and close simultaneously.When showing driving, SCAN is swept
It retouches line and is sent into driving voltage opening transistor, pixel electrode is sent into the signal voltage of display picture by IC by DATA line,
Sensor is sent into VCOM voltage by VCOM/TP line by IC as public electrode；When carrying out fingerprint recognition and touch-control scans,
Sensor is sent into Scanning Detction signal by VCOM/TP line by IC as capacitance sensor and carries out fingerprint recognition processing or touch
Detection, pixel electrode is sent by IC by DATA line at this time and the consistent same signal that drives of Scanning Detction signal intensity guarantees picture
Voltage difference is consistent always when voltage difference drives with display between plain electrode and Sensor, to not influence display effect, drops simultaneously
Interference of the low data line to fingerprint recognition signal or touch detection signal passes through after this line completes Scanning Detction, then by IC
DATA line is sent into the signal voltage of display picture to pixel electrode, is sent into VCOM voltage to Sensor by VCOM/TP line.
After the completion of display driving and Scanning Detction driving all, the TFT that driving voltage closes this line is sent by SCAN scan line.It is next
Capable driving repeats appeal movement, carries out display and fingerprint recognition and touch detection that full screen is completed in work line by line in this way.
As shown in figure 5, there is full frame identification and detection function equipment piecemeal schematic diagram for one kind of the invention:
One kind having full frame identification and detection function equipment, and the equipment includes multiple display modules and control module, Mei Gexian
Show that module is connect with the first DATA line end, the second DATA line end, third DATA line end respectively, control module and
The connection of VCOM/TP line end.Each display module include the first DATA line DATA1, the second DATA line DATA2,
Third DATA line DATA3, VCOM/TP control line, 5, three pieces of pixel electrodes 6 of public electrode, first film transistor 7,
Three pieces of pixel electrodes 6 described in two thin film transistor (TFT)s 8, third thin film transistor (TFT) 9 and the 4th thin film transistor (TFT) 10. are arranged in common electrical
5 either above or below of pole, three pieces of pixel electrodes 6 respectively with, first film transistor 7, the second thin film transistor (TFT) 8 and third film
Transistor 9 is electrically connected first film transistor 7 described in and connect with the first DATA line DATA1, second thin film transistor (TFT)
8 connect third thin film transistor (TFT) 9 described in the second DATA line DATA2 connect with third DATA line DATA3, described
4th thin film transistor (TFT) 10 is connect with VCOM/TP control line and public electrode 5.Three pieces of pixel electrodes 6 include the first pixel
Electrode, the second pixel electrode and third pixel electrode, first pixel electrode are connect with first film transistor, and described second
Pixel electrode is connect with the second thin film transistor (TFT), and the third pixel electrode is connect with third thin film transistor (TFT).
As can be seen that there is full frame identification and detection function equipment in technical solution of the embodiment of the present invention, wherein each piece
Recognition detection piecemeal includes the first DATA line, the second DATA line, third DATA line, VCOM/TP control line, public affairs
Common electrode, three pieces of pixel electrodes, first film transistor, the second thin film transistor (TFT), third thin film transistor (TFT) and the 4th film are brilliant
Body pipe.Wherein the first DATA line, the second DATA line, third DATA line and VCOM/TP control line can be multiple
Recognition detection piecemeal share, in the case where not increasing original LCD light shield, display equipment be embedded in fingerprint Identification sensor and
Touch detection sensor realizes full screen fingerprint recognition and touch detection.
Referring to Fig. 4, for a kind of piecemeal with full frame identification and detection function equipment provided in the embodiment of the present invention
Structural schematic diagram.Multiple recognition detection piecemeals carry out constituting identification and detection function equipment, and each recognition detection piecemeal is as aobvious
The minimum display unit of display screen has the function of that display, detection fingerprint and detection touch, so that being embedded in display equipment
Fingerprint Identification sensor and touch detection sensor realize full screen fingerprint recognition and touch detection, terminal can be improved and show
The integrated level of product reduces production cost, while terminal being made to show that product especially portable electronic device is more frivolous,
More excellent appearance is obtained, is improved the user experience.
Its course of work is illustrated according to Fig. 1-5:
The common electrode layer of LCD is subjected to piecemeal, and increases TFT and control line, forms fingerprint Identification sensor and touch detection
Sensor array realizes full screen fingerprint recognition and touch detection function in display.
By the way that the common electrode layer of LCD is carried out piecemeal, and increase TFT and control line, is formed in entire screen basic
Fingerprint Identification sensor and touch sensing array；The common electrode layer time-sharing multiplex of piecemeal is served only for display for a period of time
Public electrode, another a period of time are real simultaneously as the public electrode and fingerprint Identification sensor and touch detection sensor of display
Existing full screen fingerprint recognition and touch control detection.
On the LCD Array substrate of IPS FFS display pattern by common electrode layer (for ITO or other transparent lead
Electric material) carry out piecemeal, and increase control cabling (with data line same layer, can be metal or other conductors) and TFT be used for
Control and driving, form basic fingerprint Identification sensor or touch sensing.
By public electrode piecemeal, increases Sensor TFT and cabling constitutes an independent fingerprint Identification sensor or touching
Control sensor.Wherein Sensor is public electrode, show the coordination electrode that liquid crystal is constituted together with pixel electrode when driving and
The storage capacitors of pixel；When carrying out fingerprint recognition and touch-control, Sensor is as sensor；DATA1, DATA2, DATA3 are
Data line is used for transmission the signal of display pixel；VCOM/TP is control cabling, is used for transmission common electrode signal and transmission
The signal of fingerprint Identification sensor or touch sensing；SCAN is scan line, in conjunction with pixel TFT and Sensor TFT, is used for
Control the transmission of picture element signal and Sensor signal.
The present invention use projection-type self-capacitance testing principle, when human finger touch screen when, using public electrode as
Incude Sensor, detects the variation of its capacitor.Due to the uneven distance to fingerprint recognition Sensor of finger skin corium fingerprint
It is inconsistent, it is formed by that capacitance is inconsistent between them, Sensor senses that different capacitance change signals is transmitted to IC, and
Digital signal is converted by IC.Due to each Sensor of the present invention can accomplish it is small as Pixel Dimensions, thus
It can be collected into accurate fingerprint characteristic data, then be compared with the fingerprint characteristic data in database and can complete fingerprint
Identification and touch detection.
The present invention realizes in the LCD structure of IPS FFS display pattern, by increasing cabling and TFT for sensor array
Column design, individually addressable control each sensor；The composition of single sensor, that is, recognition detection unit can be one or more
The public electrode that a pixel, sub-pixel are included；Each sensor can add TFT to control with one or more groups of cablings.；TFT type
Including amorphous silicon, polysilicon, metal oxide, organic matter etc..
LCD:Liquid Crystal Display, liquid crystal display；
TFT:Thin Film Transistor, thin film transistor (TFT)；
IPS:In-Plane Switching, in-plane switching display technology；
FFS:Fringe Filed Switching, fringe field switching technique；
Array: the array substrate of liquid crystal display；
Sensor: sensor；
With drive: synchronous driving；
IC:integrated circuit, integrated circuit, the driving chip of liquid crystal display.
The present invention have it is following the utility model has the advantages that
The present invention by setting display driving with Scanning Detction drive alternately work, sequence in no particular order, 4 crystal
It manages and shares a scan line, open and close simultaneously.When showing driving, SCAN scan line is sent into high level and opens transistor,
Pixel electrode is sent into the signal voltage of display picture by IC by DATA line, and Sensor is passed through as public electrode by IC
VCOM/TP line is sent into VCOM voltage；When carrying out fingerprint recognition and touch-control scans, Sensor is as capacitance sensor by IC
Scanning Detction signal is sent by VCOM/TP line and carries out fingerprint recognition processing or touch detection, and pixel electrode is led to by IC at this time
It crosses DATA line and is sent into the voltage between the consistent same drive signal guarantee pixel electrode of Scanning Detction signal intensity and Sensor
Voltage difference is consistent always when difference drives with display, to not influence display effect, while reducing data line to fingerprint recognition signal
Or the interference of touch detection signal, it is sent by DATA line to pixel electrode after this line completes Scanning Detction, then by IC
Enter to show the signal voltage of picture, display voltage is sent into Sensor by VCOM/TP line.Display driving drives with Scanning Detction
After the completion of all, the TFT that low level closes this line is sent by SCAN scan line.The driving of next line repeats appeal movement, this
Sample carries out the display and fingerprint recognition and touch detection that full screen is completed in work line by line.The present invention is not increasing original LCD light shield
In the case where, be embedded in fingerprint Identification sensor and touch detection sensor in display equipment, realize full screen fingerprint recognition and
The integrated level that terminal shows product can be improved in touch detection, reduces production cost, while terminal being made to show that product is especially
Portable electronic device is more frivolous, obtains more excellent appearance, improves the user experience.
Embodiment 2
As shown in fig. 6-7, another Sensor partitioned organization schematic diagram, the equipment include multiple display modules and control mould
Block, the DATA line end connection of each display module difference, control module are connected with VCOM/TP line end.As shown in fig. 7, one
Recognition detection unit is only made of single sub-pixel, including a display module and a control module.Display module includes
DATA line DATA, VCOM/TP control line, public electrode 5, pixel electrode 6, first film transistor 7 and the 4th film are brilliant
Body pipe 10.Pixel electrode 6 is arranged in 5 either above or below of public electrode, and pixel electrode 6 is electrically connected with first film transistor 7.
First film transistor 7 is connect with DATA line DATA, the 4th thin film transistor (TFT) 10 and VCOM/TP control line and public electrode
5 connections.The pixel electrode is connect with first film transistor.
By public electrode piecemeal, increases Sensor TFT and cabling constitutes an independent fingerprint Identification sensor or touching
Control sensor.Wherein Sensor is public electrode, show the coordination electrode that liquid crystal is constituted together with pixel electrode when driving and
The storage capacitors of pixel；When carrying out fingerprint recognition and touch-control, Sensor is as sensor；DATA is data line, for passing
The signal of defeated display pixel；VCOM/TP is control cabling, is used for transmission common electrode signal and transmission fingerprint identification sensor
Or the signal of touch sensing；SCAN is scan line, in conjunction with pixel TFT and Sensor TFT, for control picture element signal and
The transmission of Sensor signal.
Claims (5)
1. one kind is with full frame identification and detection function circuit, it is characterised in that: the identification and detection function circuit are including more
Grade recognition detection unit, n-th grade of recognition detection unit include the first display module, the second display module, third display module and
Control module；First display module, the second display module, third display module are connect through public electrode with control module,
First display module, the second display module, third display module and control module are electrically connected with SCAN scanning line end, institute
The first display module to be stated to connect with the first DATA line end, second display module is connect with the second DATA line end,
The third display module is connect with third DATA line end, and the control module is connect with VCOM/TP line end；
Wherein, the first display module, the second display module and third display module are for driving display screen to show and constitute identification
The capacitance sensor of detection；
Control module is for driving display screen common electrode signal, driving fingerprint recognition and touch control detection signal, transmission fingerprint to know
Other data and touch data.
2. according to claim 1 a kind of with full frame identification and detection function circuit, it is characterised in that: described first is aobvious
Show that module includes the first transistor, the first pixel electrode, first capacitor and the 5th capacitor, the grid of the first transistor with
SCAN scans line end electrical connection, and drain electrode is connect with the first DATA line end, and source electrode is connect with the first pixel electrode, and described first
The one end of pixel electrode as first capacitor, the other end of the first capacitor are public electrode, one end of the 5th capacitor
It is connect for the public electrode other end with the first DATA line end.
3. according to claim 2 a kind of with full frame identification and detection function circuit, it is characterised in that: described second is aobvious
Show that module includes second transistor, the second pixel electrode, the second capacitor and the 6th capacitor, the grid of the second transistor with
SCAN scans line end electrical connection, and drain electrode is connect with the second DATA line end, and source electrode is connect with the second pixel electrode, and described second
The one end of pixel electrode as the second capacitor, the other end of second capacitor are public electrode, one end of the 6th capacitor
It is connect for the public electrode other end with the second DATA line end.
4. according to claim 3 a kind of with full frame identification and detection function circuit, it is characterised in that: the third is aobvious
Show that module includes third transistor, third pixel electrode, third capacitor and the 7th capacitor, the grid of the second transistor with
SCAN scans line end electrical connection, and drain electrode is connect with the second DATA line end, and source electrode is connect with the second pixel electrode, the third
The one end of pixel electrode as third capacitor, the other end of the third capacitor are public electrode, one end of the 7th capacitor
It is connect for the public electrode other end with third DATA line end.
5. according to claim 4 a kind of with full frame identification and detection function circuit, it is characterised in that: the control mould
Block includes the 4th transistor and the 4th capacitor, and the grid of the 4th transistor is electrically connected with SCAN scanning end, drain electrode and VCOM/
The connection of TP line end, source electrode are connect with public electrode, and one end of the 4th capacitor is the public electrode other end and SCAN scan line
End electrical connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910190372.8A CN109753952B (en) | 2019-03-13 | 2019-03-13 | Circuit with full-screen recognition and detection functions and equipment thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910190372.8A CN109753952B (en) | 2019-03-13 | 2019-03-13 | Circuit with full-screen recognition and detection functions and equipment thereof |
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| CN109753952A true CN109753952A (en) | 2019-05-14 |
| CN109753952B CN109753952B (en) | 2023-06-02 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| US11295108B2 (en) | 2015-08-19 | 2022-04-05 | NOVATEK Microeletronics Corp. | Control method for optical fingerprint sensor and related control circuit and optical fingerprint sensor |
| US11308306B2 (en) | 2015-08-19 | 2022-04-19 | Novatek Microelectronics Corp. | Control method for optical fingerprint sensor and related control circuit |
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| CN112131911A (en) * | 2019-06-25 | 2020-12-25 | Oppo广东移动通信有限公司 | Display module device, electronic apparatus, and method of assembling display module device |
| CN110286798A (en) * | 2019-06-27 | 2019-09-27 | Oppo广东移动通信有限公司 | Display control method, electronic device, equipment and the storage medium of display screen |
| CN111025697A (en) * | 2019-12-16 | 2020-04-17 | 武汉华星光电技术有限公司 | Liquid crystal display panel and display device |
| CN111696494A (en) * | 2020-07-02 | 2020-09-22 | Tcl华星光电技术有限公司 | Display panel and display device |
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| CN109753952B (en) | 2023-06-02 |
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