CN109857280A - A kind of touch display panel and touch detection circuit and electronic equipment - Google Patents
A kind of touch display panel and touch detection circuit and electronic equipment Download PDFInfo
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- CN109857280A CN109857280A CN201910218295.2A CN201910218295A CN109857280A CN 109857280 A CN109857280 A CN 109857280A CN 201910218295 A CN201910218295 A CN 201910218295A CN 109857280 A CN109857280 A CN 109857280A
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Abstract
The invention discloses a kind of touch display panels, including multiple first electrodes extended in a first direction, multiple second electrodes extending in a second direction overlapped with the first electrode, the detection and localization electrode that the first electrode two sides are set and are intersected with first electrode extended line, the first electrode and second electrode can be used in display driving, the first electrode and detection and localization electrode can be used in touch detection, the first electrode can be used in detecting coordinate of the touch location on the direction intersected with its extending direction, the detection and localization electrode can be used in detecting coordinate of the touch location on the first electrode extending direction, the touch display panel shows the user interface of the neighbouring detection and localization electrode in the display stage.The invention also discloses a kind of touch detection circuit for above-mentioned touch display panel and the electronic equipments including above-mentioned touch display panel.The present invention has preferable user experience.
Description
Technical field
The present invention relates to electronic technology field more particularly to a kind of touch display panel of better user experience and touch inspection
Slowdown monitoring circuit and electronic equipment.
Background technique
As technology development and people's living standard improve, including mobile phone, tablet computer, wearable digital product etc.
Display equipment using increasing.
Organic Light Emitting Diode (Organic Light-Emitting Diode, OLED) display technology is that a kind of utilization has
The reversible color that machine semiconductor material generates under the driving of electric current realizes the technology of display.OLED has light, thin, low function
High contrast, the advantages that Flexible Displays can be achieved in consumption, therefore OLED display technology is considered as most promising new one
For display technology.Classify according to driving method, OLED display technology can be divided into passive-matrix Organic Light Emitting Diode (Passive
Matrix OLED, PMOLED) and active-matrix Organic Light Emitting Diode (Active Matrix OLED, AMOLED) display skill
Art.Currently, PMOLED display panel is widely used in small-size electronic equipment, such as wrist-watch, player.
By can be realized touch detection and control in OLED display panel addition touch detection electrode and detection chip, lead to
The display panel with touch detection and display driving is often known as touch display panel again.However, because PMOLED display surface
PMOLED electrode is used as in touch detection the problem of will appear touch positioning, Zhi Neng by the reasons such as the arrangement of the electrode of plate
One dimension is detected and cannot achieve two-dimensional localization, and the usage experience of user is poor.
Summary of the invention
The object of the present invention is to provide a kind of touch display panel and touch detecting method with preferable user experience.
One aspect of the present invention discloses a kind of touch display panel, including multiple the first electricity extended in a first direction
Pole, multiple second electrodes extending in a second direction overlapped with the first electrode, setting in the first electrode two sides and
The detection and localization electrode intersected with first electrode extended line, the first electrode and second electrode can be used in display driving, institute
State first electrode and detection and localization electrode can be used in touch detection, the first electrode can be used in detecting touch location with
Coordinate on the direction of its extending direction intersection, the detection and localization electrode can be used in detecting touch location in first electricity
Coordinate on the extending direction of pole, the touch display panel show user circle of the neighbouring detection and localization electrode in the display stage
Face.
Optionally, the touch display panel timesharing carries out display driving and touch detection, and the touch display panel is also
Touch detection including being used to detect the self-capacitance of the first electrode and the detection and localization electrode in the touch detection stage
Circuit is used to progressively scan the scan drive circuit of the second electrode and provide electricity for the first electrode in the display stage
The data drive circuit of stream.
Optionally, the first electrode constitutes first electrode layer, and the second electrode constitutes the second electrode lay, described two
Detection and localization electrode and the first electrode are arranged in same layer or described two detection and localization electrodes and the second electrode
It is arranged and independent one layer on the first electrode is set in same layer or described two detection and localization electrodes.
Optionally, the first electrode and detection and localization electrode collectively form touch detection region, the touch detection area
Domain is divided into multiple touch key-press regions, and the touch display panel has in the display area in the correspondence touch key-press region
The user interface of the neighbouring detection and localization electrode.
Optionally, the touch display panel further includes setting luminescent layer between the first electrode and the second electrode, described
Luminescent layer includes electroluminescent organic material, and when having electric current to flow through between first electrode and second electrode, the luminescent layer can
It is corresponding to shine.
Optionally, the touch detection circuit includes amplification module, analog-digital converter and processor, and the amplification module connects
It receives the charge variation of the self-capacitance of the first electrode and detection and localization electrode and exports the corresponding touch detection voltage amplified and arrive
The analog-digital converter, the analog-digital converter according to the touch detection voltage signal output digit signals of simulation to processor,
The processor obtains the result of touch detection after carrying out signal processing.
Optionally, the amplification module of the touch detection circuit include first switch, second switch, resistance, third switch,
Amplify capacitor and amplifier, high level voltage connects one end of touch detection capacitor, the touch inspection by the first switch
Capacitor other end ground connection is surveyed, one end of first switch described in the touch detection capacitance connection also passes through the second switch, electricity
Resistance is connected to the electrode input end of amplifier, the output end of the amplifier by amplification capacitance connection to the amplifier just
Pole input terminal, the negative input ground connection of the amplifier, the third switch and the amplification capacitor both ends are simultaneously connected in institute
It states between the output end of amplifier and electrode input end.
Optionally, the first electrode layer and the second electrode lay are the structure of ITO layer or the composite layer of ITO/Ag/ITO, or
First electrode layer and the second electrode lay are made of opaque conductive material.
One aspect of the present invention also discloses a kind of touch detection circuit, described for above-mentioned touch display panel
Touch detection circuit is used to detect the touch location of the touch display panel.
One aspect of the present invention also discloses a kind of electronic equipment, including above-mentioned touch display panel, the electronics
Equipment is mobile phone, tablet computer, laptop, e-book, electronic watch, augmented reality/virtual reality device, human action
Detection device, autonomous driving vehicle, smart home device, security device, one of intelligent robot.
Compared to the prior art, touch-control display panel of the present invention passes through the detection and localization electricity that first electrode two sides are arranged in
Pole, the first electrode and the detection and localization electrode including the first keeper electrode, the second keeper electrode can be used in detecting
Touch action, and the first electrode being capable of positioning touch location, the positioning on the direction intersected with its extending direction
Detecting electrode positioning touch location can overcome on the extending direction of first electrode to realize two-dimensional touch positioning
The touch display panel of prior art PMOLED only has the technical issues of touch detection of single direction.In addition, the present invention touches
It touches display panel and passes through the user interface for configuring and there is the neighbouring first detection and localization electrode and the second detection and localization electrode, make
User touch location and first electrode and the first detection and localization electrode or first electrode and second when carrying out touch action is obtained to determine
Position detecting electrode generate it is overlapping, so as to by detect the first electrode and the first, second detection and localization electrode from electricity
Hold the two-dimensional coordinate direction that size determines touch location.Therefore, inventive touch display panel and touch detecting method have compared with
Good user experience.It is set for the touch detecting method of above-mentioned touch display panel and the electronics including above-mentioned touch display panel
It is standby that equally there is preferable user experience.
Detailed description of the invention
Fig. 1 is the schematic diagram of one embodiment of the present of invention；
Fig. 2 is the diagrammatic cross-section of embodiment illustrated in fig. 1；
Fig. 3 is the circuitry block schematic diagram of embodiment illustrated in fig. 1；
Fig. 4 is the part signal schematic diagram of embodiment illustrated in fig. 1；
Fig. 5 is the touch detection area schematic of one embodiment of the present of invention；
Fig. 6 is the touch detection circuit schematic diagram of one embodiment of the present of invention；
Fig. 7 is the circuit diagram of one embodiment of the present of invention；
Fig. 8 is the diagrammatic cross-section of one embodiment of the present of invention；
Fig. 9 is the diagrammatic cross-section of one embodiment of the present of invention；
Figure 10 is the diagrammatic cross-section of one embodiment of the present of invention；
Figure 11 is the circuitry block schematic diagram of one embodiment of the present of invention；
Figure 12 is the circuitry block schematic diagram of one embodiment of the present of invention；
Figure 13 is the circuitry block schematic diagram of one embodiment of the present of invention；
Figure 14 is the flow diagram of one embodiment of inventive touch detection method.
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.Feature described in present specification, structure can be with any suitable sides
Formula is incorporated in one or more embodiments.In the following description, many details are provided so as to fully understand
Presently filed embodiment.However, one of ordinary skill in the art would recognize that, even if without one in the specific detail or more
It is more, or using other structures, constituent element etc., the technical solution of the application can also be practiced.In other cases, do not show in detail
Out or known features or operation are described to avoid the emphasis of fuzzy the application.
Currently, capacitance touch technology is divided into surface capacitance type and projected capacitive, and according to detection in projected capacitive
Method is divided into two kinds of realization sides of self-capacitance (Self-Capacitance) and mutual capacitance type (Mutual Capacitance) again
Formula.Laterally and longitudinally staggered electrod-array is produced with a kind of transparent conductive material in glass baseplate surface, these
Transverse electrode and longitudinal electrode just constitute capacitor with ground respectively.And this capacitor is usually said self-capacitance, that is, electricity
The capacitor of pole over the ground.Display panel with touch detection function, which is called, does touch display panel or touch screen.
For self-capacitance touch display panel, when the touch detection region of the non-contact surface plate of human body, each self-capacitance electricity
The capacitor that pole is born is a fixed value, and when human body touches screen, the capacitor that corresponding self-capacitance electrode is born is to fix
Value superposition body capacitance, the capacitance variation by detecting each self-capacitance electrode may determine that touch location.Basic principle is just
It is the charge-discharge circuit being constantly charged and discharged.If with finger or other object touch panels region, Jiu Huigai
Become touch area counter electrode self-capacitance size, causes charge and discharge charge to change, the corresponding output voltage of amplifier also can
Variation.By calculating the variation of charge and discharge charge or output voltage, to realize touch detection function.
In one embodiment of the present of invention, a kind of touch display panel includes first electrode layer, with the first electrode layer
The second electrode lay being oppositely arranged, and the luminescent layer being arranged between the first electrode layer and the second electrode lay.Described
One electrode layer includes multiple first electrodes extended in a first direction, and the second electrode lay includes multiple extending in a second direction
Second electrode.Can also be arranged in the first electrode layer one for protection glass cover-plate or glass substrate.
In the present embodiment, the first electrode and second electrode are strip shaped electric poles, the first direction and second direction phase
It is mutually vertical.The luminescent layer is organic electroluminescence layer (electroluminescent layer, EL layer), is there is electricity
Stream shines when flowing through the luminescent layer.Each of the first electrode and second electrode, which overlap place, can regard a pixel as,
By providing electric current to the first electrode and second electrode, the first electrode and second electrode can be flowed a current through to seek
Location and activation pixel.The touch display panel can excite the luminescent layer at different locations, so that the luminescent layer
It shines or does not shine in the pixel of different location.
In the present embodiment, the first electrode layer and the second electrode lay be can be used with preferable electric conductivity and translucency
Material be made, for example, the transparent conductive oxides such as indium tin oxide (Indium Tin Oxides, ITO).First electricity
Pole layer and the second electrode lay can also have the multilayered structures such as the composite layer of ITO/Ag/ITO.Certainly, other changes of the invention
In embodiment, the first electrode layer and the second electrode lay can also be also made using opaque conductive material, and the present invention does not make
Limitation.
In the present embodiment, the first electrode can be anode, and second electrode can be cathode, and the luminescent layer can be
OLED luminescent layer, the touch display panel can be the PMOLED display panel with touch control function.Certainly, of the invention
It is not limited thereto, in the other embodiment of the present invention, the touch display panel can be the electroluminescent hair of any organic or inorganic
Any LED based display panel that luminescent material is realized.
The touch display panel connection display driver chip and touch detection chip, the display driver chip and touch
Detection chip can be independent two chips, be also possible to be integrated in a chip, such as be driven by touch-control and display
It is a chip that device, which integrates (Touch and Display Driver Integration, TDDI) Integration ofTechnology,.The display
Driving chip and touch detection chip sometimes can be described as display driver circuit and touch detection circuit.
The display driver circuit includes scan drive circuit and data drive circuit, the scan drive circuit be used for by
Row scans the multiple second electrode, needed for the data drive circuit is used for while shining to the offer of the multiple first electrode
Electric current.In a frame picture display times, the multiple second electrode only has one and be short-circuited in the same time is connected to ground connection
End, other second electrodes and ground terminal disconnect and are provided the common voltage (Vcom) of a high level at this time；It is the multiple
First electrode is simultaneously provided electric current, so that electric current flows through the second electrode of the first electrode and ground connection, so that luminescent layer exists
Pixel can shine at the first electrode of the corresponding ground connection.Second electrode line by line repeats the above process, until
All second electrodes have been scanned, and just complete the display of a frame picture.Such as, but not limited to, the touch display panel tool
There is the refresh rate of 100Hz, then each frame picture should complete the scanning of second electrode in 10ms.The first electrode again may be used
Referred to as column electrode or SEG electrode, the second electrode can be described as row electrode or COM electrode again, and the scan drive circuit again may be used
Referred to as horizontal drive circuit, the data drive circuit can be described as column drive circuit again.In some change embodiments of the invention, institute
First electrode COM electrode is stated, second electrode is SEG electrode.The ground terminal can be the earth ground terminal, equipment ground end, or
Other ground terminals for defining as needed of person, should broadly understood in the present invention, be not specifically limited to this.
In the present embodiment, in order to realize that touch detection function, the first electrode of the touch display panel can be multiplexed with
Touch detection electrode, the self-capacitance that the touch detection circuit being connect by one with first electrode detects the first electrode become
Change, be able to detect that the position that external object (such as: finger) touches on the touch display panel, to realize touch inspection
It surveys.When carrying out touch detection, if the finger of user touches the glass cover-plate of the neighbouring first electrode, because of people
Body itself electrification, forms parasitic capacitance between finger and the first electrode, first electrode corresponding with finger touch range
Self-capacitance increases.Self-capacitance changes the charge and discharge charge variation for leading to touch detection circuit, and processor can be according to charge and discharge
The quantity of electric charge calculates self-capacitance size, or calculates self-capacitance size according to pulse voltage value.The touch detection circuit passes through inspection
The pulse signal voltage changing value or charge and discharge charge variation amount in first electrode are surveyed, can determine that corresponding self-capacitance is become
The first electrode of change, so as to determine the position touched.That is, being able to confirm that the touch position of finger by first electrode
Set the position on the direction intersected with the extending direction of the first electrode or coordinate.
Certainly, in change embodiment of the invention, it is also possible to the second electrode and is multiplexed with touch detection electrode.
In order to be able to confirm that position of the finger touch position on the extending direction of the first electrode, institute when touch detection
Stating touch display panel can also include multiple detection and localization electrodes, and the multiple detection and localization electrode is strip shaped electric poles, have
The inconsistent extending direction with the extending direction of the first electrode.Such as, but not limited to: the extension of the detection and localization electrode
Extending direction of the direction perpendicular to the first electrode.Since the extending direction of first electrode is first direction, second electrode
Extending direction is second direction, when second direction is perpendicular to first direction, then the extension of the detection and localization electrode at this time
Direction is consistent with second direction.The detection and localization electrode is only used for touch detection rather than display driving, can be used in
Detect touch location position on first electrode extending direction of the finger on glass cover-plate.The detection and localization electrode connection
The touch detection circuit can connect the scan drive circuit or be not connected to the scan drive circuit.The positioning inspection
Surveying electrode can be arranged with the first electrode layer in same layer, or is arranged in the first electrode layer by insulating layer, again
Or it is arranged with the second electrode lay in same layer.Described two detection and localization electrodes can be set in same layer, Huo Zheshe
It sets in different layers.
The multiple first electrode and multiple second electrodes, which overlap, forms a grid distribution, the first electrode and second
The overlapping place of electrode is considered as a pixel, and the multiple pixel constitutes the display area of the touch display panel,
Therefore alternatively the first electrode and second electrode together constitute the display area of the touch display panel.It is same in this
When, the first electrode is also multiplexed with touch detection electrode, therefore the multiple first electrode and positioning inspection in touch detection
Survey the touch detection region that electrode collectively forms the touch display panel.
In the present embodiment, the multiple detection and localization electrode includes the setting vertical with the first electrode in first electrode
The the first detection and localization electrode and the second detection and localization electrode of layer two sides.The first detection and localization electrode and the second detection and localization
Electrode and the intersection of the extended line of the first electrode or first electrode, the extended line of the first electrode include that first electrode edge is prolonged
Stretch the extended line in direction or the extended line of the opposite direction along extending direction.
In the present embodiment, the touch detection and display driving are that timesharing carries out, it may be assumed that a moment, the touch
Display panel perhaps in the display stage or is in the touch detection stage, without carrying out display driving simultaneously and touching inspection
It surveys.For example, the touch detection circuit each frame image display after to the self-capacitance of the first electrode change into
Row detection.Therefore, the first electrode and second electrode can be used in display driving, the first electrode and two detection and localizations
Electrode can be used in touch detection, and the first electrode can be used in detecting touch location in the direction intersected with its extending direction
On coordinate, described two detection and localization electrodes can be used in detecting seat of the touch location on the first electrode extending direction
Mark.
It should be noted that description of the invention is likely to occur other for describing first electrode, detection and localization electrode etc.
For the word of touch detection electrode, such as, but not limited to: touch detection electrode or self-capacitance detecting electrode or detecting electrode
Deng skilled artisans appreciate that for equivalent first electrode or detection and localization electrode of the invention.For convenience,
One electrode and detection and localization electrode may be collectively referred to herein as touch detection electrode when being used for touch detection.In addition, description of the invention
The words such as " first " of middle appearance, " second ", " row ", " column " are used for the purpose of facilitating the description of understanding, do not represent any specific
It limits.
Touch display panel of the present invention is PMOLED display panel, when light beam is emitted from the one side of substrate OLED, institute
Stating PMOLED display panel is bottom light emitting-type display panel；When light beam far from one side of substrate from when being emitted, the PMOLED is shown
Panel is top light emitting-type display panel；It is described when light beam is emitted from the side of the one side of substrate OLED and separate substrate simultaneously
PMOLED display panel is dual-side luminescent type display panel.
In addition, it should be noted that, although the embodiment of the present application is all schematically described with touch display panel,
Inventive touch display panel can also be used for not needing in the other embodiments that image is shown, such as laptop
Touch tablet (Touch Pad), the first electrode layer and the second electrode lay do not need transparent at this time, the glass substrate for protection
It can be replaced with other materials.
Referring to Fig. 1, a touch display panel includes being prolonged by multiple along first direction in one embodiment of the present of invention
First electrode layer (not labeled) that the first electrode 12 stretched is constituted extending in a second direction is overlapped by multiple with first electrode 12
The second electrode lay (not labeled) for the relatively described first electrode layer that the second electrode 14 of setting is constituted, setting are electric described first
Luminescent layer 13, the glass cover-plate 11 that is arranged in the first electrode layer and setting between pole layer and the second electrode lay exist
12 two sides of first electrode and the first positioning inspection to intersect vertically with the extended line of the first electrode 12 or first electrode 12
Survey electrode 101 and the second detection and localization electrode 102.The first electrode 12 and second electrode 14 are not directly coupled, but are handed over
Mistake overlaps.In the present embodiment, such as, but not limited to, the first electrode 12 is parallel to each other, and the second electrode 14 is mutually
It is parallel and vertical with the second electrode 12.The first electrode layer is located above the second electrode lay.In the glass cover
11 top of plate, user can be seen image and show and carry out touch control in 11 upper surface of glass cover-plate.The first electrode
12 extended line includes the opposite direction of the extended line along 12 extending direction of first electrode or the extending direction along first electrode 12
Extended line.
Please refer to Fig. 2, the first detection and localization electrode 101 and the second detection and localization electrode 102 and described first
Electrode 12 is arranged in same layer.In the other embodiment of the present invention, the first detection and localization electrode 101 and the second detection and localization
Electrode 102, which can also be set, to be arranged with the second electrode 14 in same layer, or one layer is separately provided in the first electrode layer,
The present invention is with no restriction.The luminescent layer 13 includes the electroluminescence layer that organic molecular film is constituted, such as, but not limited to: OLED
Stack layer.The first electrode 12 is anode, and the second electrode 14 is cathode, 14 energy of the first electrode 12 and second electrode
It is enough respectively used to provide electric current for the luminescent layer 13 and receives electric current from the luminescent layer 13.
Please refer to Fig. 3, the touch display panel further includes touch detection circuit 110,120 and of data drive circuit
Scan drive circuit 130.The touch detection circuit 110 connects the first electrode 12, the first detection and localization electrode 101 and
Two detection and localization electrodes 102, for detecting the first electrode 12, the first detection and localization electrode 101 and the second detection and localization electricity
The self-capacitance of pole 102 changes.The data drive circuit 120 connects the first electrode 12, for the first electrode 12
Electric current is provided.The scan drive circuit 130 connects the second electrode 14, drives the second electrode for progressively scanning
14, so that the second electrode 14 of corresponding scanning is grounded, to have electricity between the second electrode 14 and first electrode 12 of corresponding scanning
Stream passes through, and other not scanned second electrodes 14 then disconnect ground connection and are not turned between first electrode 12.Pass through repetition
It progressively scans in this way, show that completing a frame image shows line by line.In the interim that every frame image is shown, the touch display surface
Plate is in touch detection mode, and the touch detection circuit 110 is to the first electrode 12,101 and of the first detection and localization electrode
Second detection and localization electrode 102 carries out touch detection, and the scan drive circuit 130 provides the common voltage of high level to described
Second electrode 14, the touch detection circuit 110 make the first electrode 12, the first detection and localization electrode 101 and second fixed
The self-capacitance of position detecting electrode 102 is electrically charged, discharges and detects charge and discharge quantity of electric charge signal or detection coupled voltages signal, and
By being further processed to the quantity of electric charge signal or coupled voltages signal, so realization external object (as: finger) in institute
State the detection of the touch action and touch location on touch display panel.
The one grid distribution of the multiple first electrode 12 and the overlapping formation of multiple second electrodes 14, the first electrode 12
It is considered as a pixel with the overlapping place of second electrode 14, the multiple pixel constitutes the aobvious of the touch display panel
Show region, therefore alternatively the first electrode 12 and second electrode 14 together constitute the display of the touch display panel
Region.Simultaneously, the first electrode 12 is also multiplexed with touch detection electrode, therefore the multiple first in touch detection
Electrode 12 and the first detection and localization electrode 101, the second detection and localization electrode 102 collectively form the touch display panel
Touch detection region.It will be apparent that user's finger will affect first electrode 12 at touch location, Yi Ji when touch detection
The self-capacitance of one positioning detecting electrode 101 or the second detection and localization electrode 102, and finger size is noticeably greater than first electricity
Pole 12, the first detection and localization electrode, the second detection and localization electrode 102 width, so the touch area point for touch detection
The resolution ratio that resolution does not need display area is so high.Therefore, it is if can divide the first electrode 12 in touch detection
Dry sense channel, each sense channel includes a certain number of first electrodes 12.It is defeated after the signal of each sense channel is in parallel
Enter to the touch detection circuit 110.In the present embodiment, the touch detection circuit 110 may include amplification module, described to put
Big module may include multiple being connected respectively to the first electrode, the first detection and localization electrode and the second detection and localization electrode
A part of in amplifier or above-mentioned multiple electrodes can be connected to an amplifier by switch, or will be multiple on
The quantity of electric charge signal of the charge and discharge of electrode is stated by being input to an amplifier after adder summation.
Please refer to Fig. 4, it is assumed that 14 number of second electrode of the touch display panel is n.Gl1 to gln in Fig. 4
(n is positive integer) respectively indicates the scanning signal being applied in n second electrode 14.In the display stage, the touch display surface
Plate is in display drive mode, and the n second electrode 14 is successively grounded at scanning signal gl1 to gln turntable driving, so that
Corresponding first electrode 12 and ground connection second electrode 14 between can electric current flow through, thus complete m frame image show.It is touching
Detection-phase, the touch detection circuit 110 work, and the first electrode 12 is used for touch detection, and the second electrode 14 connects
To Vcom or it is connected to specific voltage and cooperates touch detection.After the touch detection stage, the touch display panel enters
M+1 frame shows the stage.
In one change embodiment of the present embodiment, the first electrode 12 can be 160, and second electrode 14 can be
80, the first electrode 12 and second electrode 14 constitute the display area of 160*80, and when carrying out touch detection, 5 first
Electrode 12 merges into a sense channel, therefore described 160 constitute 32 sense channels and two detection and localizations to first electrode 12
The sense channel of electrode 101,102.Please refer to Fig. 5, the touch detection region of the touch display panel may include 8 touchings
Key area is touched, first group of touch key-press region A1, A2, A3, A4 including the neighbouring first detection and localization electrode 101, and
Second group of touch key-press region B1, B2, B3, B4 of the neighbouring second detection and localization electrode 102.Therefore, 8 touches are pressed
Key range can be divided into two rows that longitudinal coordinate is A, B and four column that lateral coordinates are 1,2,3,4.
When user touches some touch key-press region, corresponding first electrode 12 can be by the touch detection circuit
110 detect that self-capacitance changes and be able to confirm that the corresponding lateral coordinates in touch key-press region, while corresponding first positioning
Detecting electrode 101 or the second detection and localization electrode 102 can be detected self-capacitance variation and energy by the touch detection circuit 110
The corresponding longitudinal coordinate in touch key-press region is enough confirmed, thus the positioning user that the touch detection circuit 110 can determine
Which touch key-press region touch location is located at.Touch key-press region real area is simultaneously little, is configuring the touch
The icon touched or button can will be indicated adjacent to first positioning when user interface (UI) of display panel in user interface
The position of detecting electrode 101 or the second detection and localization electrode 102 setting so that user in touch operation unconsciously
The first detection and localization electrode 101 or the second detection and localization electrode 102 will necessarily be touched.As shown in figure 4, circular dashed line frame indicates
User's finger actual touch position, the expression of rectangular broken line frame can be with the user interface of touch control.Display the stage, with touch
Adjacent to the position of the detection and localization electrode, shown touch display panel shows neighbouring described the corresponding display area in key area
The user interface in the first detection and localization region 101 or the second detection and localization region 102.Therefore, user is practical in touch operation
Touch location and the first detection and localization electrode 101 or the second detection and localization electrode 102 overlap, so as to cause described
The self-capacitance variation of one positioning detecting electrode 101 or the second detection and localization electrode 102.
In above-described embodiment, the first detection and localization electrode 101 and the second detection and localization electrode 102 are exemplary illustration, this
In invention other embodiments, the first detection and localization electrode 101 and the second detection and localization electrode 102 may be collectively referred to as positioning inspection
Electrode is surveyed, quantity is not specifically limited.
In the change embodiment of above-described embodiment, the touch detection region can be divided into multiple touch key-press regions,
The touch display panel has the use of the neighbouring detection and localization electrode in the display area in the correspondence touch key-press region
Family interface.
It is described neighbouring to refer to the user interface and the detection and localization electrode in above-described embodiment and change embodiment
Or the distance between corresponding touch detection region of the detection and localization electrode is small enough so that user carries out on a user interface
Touch control can touch the detection and localization electrode corresponding region on the touch display panel when operating.
Referring to Fig. 6, the touch detection circuit 110 includes amplification module 111, analog-digital converter 112 and processor
113.Due to when carrying out touch detection, the first electrode 12 and the first detection and localization electrode 101, the second detection and localization
Electrode 102 is grounded, and corresponding ground capacity is self-capacitance, referred to collectively herein as touch detection capacitor.The amplification
Module 111 receives corresponding with the first electrode 12, the first detection and localization electrode 101, the second detection and localization electrode 102
The charge variation of multiple touch detection capacitors simultaneously exports the corresponding touch detection voltage amplified to the analog-digital converter 112, institute
Analog-digital converter 112 is stated according to the touch detection voltage signal output digit signals of simulation to processor 113, the processor
The result of touch detection is obtained after 113 progress signal processings.
Define the electricity certainly of the first electrode 12 and the first detection and localization electrode 101, the second detection and localization electrode 102
Holding is touch detection capacitor C1.The amplification module 111 includes first switch S1, second switch S2, resistance R1, third switch
S3, amplification capacitor C2 and amplifier 1111.High level voltage VDD (such as: equipment supply voltage) pass through the first switch S1
Connect one end of touch detection capacitor C1, (it is that touch detection capacitor C1 is practical to touch detection capacitor C1 other end ground connection
One electrode 12 or the first detection and localization electrode 101, the parasitic capacitance of the second detection and localization electrode 102 over the ground, i.e. self-capacitance).Institute
State touch detection capacitor C1 connect the first switch S1 one end also pass through the second switch S2, resistance R1 is connected to amplification
The electrode input end of device 1111, the output end of the amplifier 1111 are connected to the amplifier 1111 by amplifying capacitor C2
Electrode input end.The negative input of the amplifier 1111 is grounded.The third switch S3 and the both ends the amplification capacitor C2
And it is connected between the output end and electrode input end of the amplifier 1111.1111 output end of the amplifier output amplification
Touch detection voltage Vout, size are Vout=(VDD-Vcmop) * C1/C2, and wherein Vcmop indicates the amplifier 1111
Common-mode voltage, according to circuit design needs the common-mode voltage of the amplifier 1111 can be adjusted.Specifically, inspection is touched
The initial charge C1*VDD of capacitor C1 is surveyed, terminates charge C1*Vcmop, it is C1* that the touch detection capacitor C1, which releases the quantity of electric charge,
VDD-C1*Vcmop.Above-mentioned charge can be converted to the variation of 1111 output voltage of amplifier, i.e. C2*Vout=C1*VDD-C1*
Vcmop.Therefore Vout=(VDD-Vcmop) * C1/C2.
The touch detection voltage Vout that the amplifier 1111 exports is proportional to the touch detection capacitor C1, therefore can be with
The size of the touch detection capacitor C1 is detected by detecting the size of touch detection voltage Vout.Here ground connection can be
Big ground terminal, equipment ground terminal are connected, or other ground terminals defined as needed.
The touch detection capacitor C1 is used to charge when the switch S2 of first switch S1 conducting and second is turned off；First
It discharges when switch S1 shutdown and second switch S2 conducting, the charged moiety on the touch detection capacitor C1 is transferred to described at this time
Amplify on capacitor C2.When the touch detection circuit 110 works, the first switch S1 and second switch S2 are single in a control
Continuous turn-on and turn-off under first (not shown) control, and the first switch S1 and second switch S2 will not be simultaneously turned on always
Or shutdown.Therefore the touch detection capacitor C1 constantly charge, discharge during produce with some cycles and frequency
Pulse signal, the pulse signal is output to the analog-digital converter 112 after being amplified by the amplifier 1111, and through into one
Corresponding digital signal is exported to the processor 113 after step processing.The processor 113 can be by the analog-digital converter
112 output signal storage is at array, a reference value for comparing array of values and prestoring, so that the output signal detected changes greatly
Point be touch location.
The third switch S3 can be used for resetting the amplifier 1111, be normally-off state.In addition, the present embodiment
It changes in embodiment, the touch detection circuit 110 can also include the filter unit or element for filtering out noise；For producing
The control unit etc. of raw pulse control signal.
In one change embodiment of above-described embodiment, the touch detection circuit 110 can also be by detecting described the
Between one positioning detecting electrode 101 and/or the second detection and localization electrode 102 and a specified or neighbouring first electrode 12
Touch detection is realized in mutual capacitance.Referring to Fig. 7, in a change embodiment of the invention, the first detection and localization electrode 101
There is equivalent mutual coupling capacitor Cm (i.e. mutual capacitance), the first detection and localization electrode 101 between a first electrode 12
There is field distribution between the first electrode 12.When external finger touches or close to 101 He of the first detection and localization electrode
When the first electrode 12, due to having coupled capacitor, the portion that finger first electrode 12 is launched between human body and the earth
Divide electric field, the received electric field of the first detection and localization electrode 101 reduces, might have a Weak current and pass through first electrode
12 flow through human body to the earth, correspondingly, may also have a Weak current and be flowed through by the first detection and localization electrode 101
Human body causes the mutual coupling capacitor Cm to change to the earth.To the variation of the capacitor C1 quantity of electric charge in similar above-described embodiment
It calculates, the touch detection circuit 110 judges that described first is fixed by the quantity of electric charge variation of detection mutual coupling Cm
Whether position detecting electrode 101 is touched.Likewise, the second detection and localization electrode 102 can also be by detecting itself and one
Mutual coupling capacitor between first electrode 12 realizes the detection for touching positioning.
Therefore, the above embodiment of the present invention and change embodiment in, for the first detection and localization electrode 101 and second
Detection and localization electrode 102 can carry out touch detection using self-capacitance mode, can also carry out touch inspection using mutual capacitance mode
Survey, or using both carry out touch detection by the way of combination, the present invention with no restrictions, it will be understood by those skilled in the art that
The all or part of deformation of above-described embodiment is combined, and replacement, extension etc. belongs to the scope of the present invention.
Referring to Fig. 8, being the schematic diagram of a change embodiment of above-described embodiment, the touch display panel and above-mentioned reality
The structure and realization principle for applying touch display panel in example are essentially identical, and difference is: the first detection and localization electrode 101,
Second detection and localization electrode 102 and the second electrode lay are arranged in same layer.
Referring to Fig. 9, being the schematic diagram of a change embodiment of above-described embodiment, the touch display panel and above-mentioned reality
The structure and realization principle for applying touch display panel in example are essentially identical, and difference is: 101 He of the first detection and localization electrode
Second detection and localization electrode 102 is arranged in the first electrode layer in independent one layer.The first detection and localization electrode at this time
101 and second detection and localization electrode 102 between glass cover-plate 11 and first electrode 12.
Referring to Fig. 10, be the schematic diagram of one of above-described embodiment change embodiment, the touch display panel with it is above-mentioned
The structure and realization principle of touch display panel are essentially identical in embodiment, and difference is, further include setting in first electricity
Other multiple detection and localization electrodes in independent one layer between pole layer and glass cover-plate 11.
The present invention is not limited thereto, in other embodiments of the invention, 101 He of the first detection and localization electrode
Second detection and localization electrode 102 can also have other set-up modes, as long as can be realized on 12 extending direction of first electrode
Touch location is detected and is positioned, the scope of the present invention is belonged to.
Please refer to Figure 11, in another embodiment of inventive touch display panel, the touch display panel includes multiple
First electrode 22, the multiple second electrodes extending in a second direction overlapped with the first electrode extended in a first direction
24, the luminescent layer (not shown) between the first electrode 22 and second electrode 24 is set, is arranged in the first electrode 22
Two sides and the first detection and localization electrode 201 intersected with 22 extended line of first electrode and the second detection and localization electrode 202, with
Data drive circuit 220 that the first electrode 22 connects, the scan drive circuit 230 being connect with the second electrode 24 and
The touch detection circuit being connect with the first electrode 22, the first detection and localization electrode 201 and the second detection and localization electrode 202
210.The first direction and second direction be vertical or out of plumb intersection.The touch detection circuit 210 is used in the touching
It touches when display panel is in touch detection mode to the first electrode 22, the first detection and localization electrode 201, the second detection and localization
The capacitance variations of electrode 202 are detected, the touch location of (such as: finger) thus localized external object.The data-driven
Circuit 220, for providing electric current to the first electrode 22.The scan drive circuit 230 connects the second electrode 24, uses
The second electrode 24 is driven in progressive scan, so that the second electrode 24 of corresponding scanning is grounded, thus the second of corresponding scanning
There is electric current process between electrode 24 and first electrode 22, and other not scanned second electrodes 24 then disconnect ground connection and with first
It is not turned between electrode 22.The luminescent layer may include the luminescence unit of the colors such as corresponding transmitting red, green, blue, described to shine
Unit can electroluminescent when electric current flows through.By repeating above-mentioned progressive scan, showing line by line, when all 24 quilts of second electrode
After the completion of scanning, the touch display panel is completed a frame image and show, the touch display panel from show drive mode into
Enter touch detection mode.The touch detection circuit 210 is to the first electrode 22 and the first detection and localization electrode 201, second
The self-capacitance variation of detection and localization electrode 202 is detected, and the touch location of localized external object (such as: finger), described
Positioning includes the coordinate confirmed the touch location on the extending direction of the first electrode 22 and perpendicular to first electricity
Coordinate on the extending direction of pole 22.To the first electrode 22 and the first detection and localization electrode 201, the second detection and localization electrode
After 202 complete touch detection, the touch display panel terminates touch detection mode, into display drive mode, continues next
Frame image is shown.In fact, the first electrode 22 in touch detection as touch detection electrode, the conduct when showing driving
Show driving electrodes.
The scan drive circuit 230 includes that generation circuit of scanning signals 231, switching circuit 233 and common voltage generate
Circuit 232.The generation circuit of scanning signals 231 connects the switching circuit 232.The public voltage generating circuit 232 is logical
It crosses the switching circuit 232 and is connected to the second electrode 24.The switching circuit 233 includes multiple switch (not labeled), institute
State switch and can be include a control terminal and two conduction terminals trigistor (such as: field effect transistor).It is described
Generation circuit of scanning signals 231 connects the control terminal of the multiple switch, for generating and exporting scanning signal to the switch,
Switch on or off under scanning signal control.The public voltage generating circuit 232 connects the multiple open
Another conduction terminal of the conduction terminal closed, the multiple switch connects the second electrode 24.The common voltage generates electricity
Road 232 provides in switch conduction the common voltage to described the be correspondingly connected with for generating common voltage (Vcom)
Two electrodes 24.The second electrode 24 ground connection in the switch OFF being correspondingly connected with.The generation circuit of scanning signals 231 is line by line
The multiple switch is turned off, so that the second electrode 24 is grounded line by line.Also, the second electrode 24 is in synchronization
Only one second electrode 24 ground connection.In the present embodiment, the common voltage is high level voltage, for example, 8~15V voltage.
When the second electrode 24 is applied the common voltage, do not have between the second electrode 24 and the multiple first electrode 22
There is electric current to flow through.When the second electrode 24 ground connection, electric current is formed between the second electrode 24 and multiple first electrodes 22
Access especially corresponds to multiple first electrodes so that the luminescent layer between first electrode 22 and second electrode 24 is arranged in
22 and the luminescent layer at the overlapping place of the second electrode 24 can generate electroluminescent.The data drive circuit 22 is supplied to described
The size of current of first electrode 22 can not be identical, so the difference overlapping position of corresponding different first electrodes 22 and second electrode 24
The light emission luminance for the luminescent layer set can not also be identical.
The first detection and localization electrode 201, the second detection and localization electrode 202 can be set in 22 institute of first electrode
In layer, perhaps it is arranged in the 24 place layer of second electrode or be arranged in the first electrode 22 independent one layer.It is described
An also settable protective layer (such as: glass cover-plate) above first electrode 22, user can be touched by touching protective layer
The operation of control.
Figure 12 is please referred to, in another embodiment of inventive touch display panel comprising, it is multiple to extend in a first direction
First electrode 32, multiple second electrodes 34 extending in a second direction overlapped with the first electrode, setting is described the
Luminescent layer (not shown) between one electrode 32 and second electrode 34, setting are in 34 two sides of second electrode and with described second
The the first detection and localization electrode 301 and the second detection and localization electrode 302 of the extended line intersection of electrode 34 and the first electrode 32
The data drive circuit 320 of connection, the scan drive circuit 330 being connect with the second electrode 34 and with the second electrode
34, the touch detection circuit 310 of the first detection and localization electrode 301 and the connection of the second detection and localization electrode 302.In the present embodiment,
The first direction and second direction are mutually perpendicular to.The present invention changes in embodiment, and the first direction and second direction can also
With out of plumb.The touch detection circuit 310 is used for when the touch display panel is in touch detection mode to described the
The self-capacitance variation of two electrodes 34, the first detection and localization electrode 301, the second detection and localization electrode 302 is detected, to position
The touch location of external object (such as: finger).The data drive circuit 320, for providing electricity to the first electrode 32
Stream.The scan drive circuit 330 connects the second electrode 34, drives the second electrode 34 for progressively scanning, so that
The second electrode 34 of corresponding scanning is grounded, thus have electric current process between the second electrode 34 and first electrode 32 of corresponding scanning,
And other not scanned second electrodes 34 then disconnect ground connection and are not turned between first electrode 32.The luminescent layer can wrap
The luminescence unit of the colors such as corresponding transmitting red, green, blue is included, the luminescence unit can electroluminescent when electric current flows through.Pass through weight
Multiple above-mentioned progressive scan shows that after the completion of all second electrodes 34 are scanned, the touch display panel completes one line by line
Frame image shows that the touch display panel enters touch detection mode from display drive mode.The touch detection circuit 310
The self-capacitance variation of the second electrode 34 and the first detection and localization electrode 301, the second detection and localization electrode 302 is examined
It surveys, and the touch location of localized external object (such as: finger), the positioning includes confirming the touch location described second
Coordinate on the extending direction of electrode 34 and perpendicular to the coordinate on the extending direction of the second electrode 34.To second electricity
After pole 34 and the first detection and localization electrode 301, the second detection and localization electrode 302 complete touch detection, the touch display panel
Terminate touch detection mode, into display drive mode, continues next frame image and show.In fact, the second electrode 34 exists
As touch detection electrode when touch detection, when showing driving as display driving electrodes.
The scan drive circuit 330 includes that generation circuit of scanning signals 331, switching circuit 333 and common voltage generate
Circuit 332.The generation circuit of scanning signals 331 connects the switching circuit 332.The public voltage generating circuit 332 is logical
It crosses the switching circuit 332 and is connected to the second electrode 34.The switching circuit 333 includes multiple switch (not labeled), institute
State switch and can be include a control terminal and two conduction terminals trigistor (such as: field effect transistor).It is described
Generation circuit of scanning signals 331 connects the control terminal of the multiple switch, for generating and exporting scanning signal to the switch,
Switch on or off under scanning signal control.The public voltage generating circuit 332 connects the multiple open
Another conduction terminal of the conduction terminal closed, the multiple switch connects the second electrode 34.The common voltage generates electricity
Road 332 provides the common voltage to described second be correspondingly connected in switch conduction for generating a common voltage
Electrode 34.The second electrode 34 ground connection in the switch OFF being correspondingly connected with.The generation circuit of scanning signals 331 closes line by line
Break the multiple switch, so that the second electrode 34 is grounded line by line.Also, the generation circuit of scanning signals 331 makes
The second electrode 34 is obtained to be grounded in only one second electrode 34 of synchronization.When the second electrode 34 is applied the public affairs
When common voltage, there is no electric current to flow through between the second electrode 34 and the multiple first electrode 32.When the second electrode 34
When ground connection, current path is formed between the second electrode 34 and multiple first electrodes 32, so that being arranged in first electrode
Luminescent layer between 32 and second electrode 34 especially corresponds to the hair of multiple first electrodes 32 and the overlapping place of the second electrode 34
Photosphere can generate electroluminescent.The size of current that the data drive circuit 32 is supplied to the first electrode 32 can not phase
Together, so the light emission luminance of the luminescent layer of the different crossover positions of corresponding different first electrodes 32 and second electrode 34 can not also
It is identical.The first detection and localization electrode 301, the second detection and localization electrode 302 can be set where the first electrode 32
Layer is perhaps arranged in the 34 place layer of second electrode or be arranged in the first electrode 32 independent one layer.
Please refer to Figure 13, in another embodiment of inventive touch display panel, the touch display panel includes multiple
First electrode 42, the multiple second electrodes extending in a second direction overlapped with the first electrode extended in a first direction
44, the first detection and localization electrode 401 that 42 two sides of first electrode are set and are intersected with 42 extended line of first electrode
With the second detection and localization electrode 402, the data drive circuit 420 being connect with the first electrode 42 and the second electrode 44
The scan drive circuit 430 of connection and with the first electrode 42, the first detection and localization electrode 401 and the second detection and localization electricity
The touch detection circuit 410 that pole 402 connects.In the present embodiment, the first direction and second direction are mutually perpendicular to.The present invention becomes
First direction and second direction are more stated described in embodiment to be mutually perpendicular to.The touch detection circuit 410 is used for
The touch display panel is in fixed to the first electrode 42, the first detection and localization electrode 401, second when touch detection mode
The capacitance variations of position detecting electrode 402 are detected, the touch location of (such as: finger) thus localized external object.The number
It is used to provide electric current to the first electrode 22 according to driving circuit 420.The scan drive circuit 430 connects the second electrode
44, the second electrode 44 is driven for progressively scanning, so that the second electrode 44 of corresponding scanning is grounded, thus corresponding scanning
Have electric current process between second electrode 44 and first electrode 42, and other not scanned second electrodes 44 then disconnect ground connection and with
It is not turned between first electrode 42.By repeating above-mentioned progressive scan, showing line by line, when all second electrodes 44 have been scanned
Cheng Hou, the touch display panel complete the scanning of a frame image, and the touch display panel enters touching from display drive mode
Touch detection pattern.The touch detection circuit 410 positions the first electrode 42 and the first detection and localization electrode 401, second
The self-capacitance variation of detecting electrode 402 is detected, and the touch location of localized external object (such as: finger), the positioning
Including confirming coordinate on the extending direction of the first electrode 42 of the touch location and perpendicular to the first electrode 42
Extending direction on coordinate.To the first electrode 22 and the first detection and localization electrode 401, the second detection and localization electrode 402
After completing touch detection, the touch display panel terminates touch detection mode, into display drive mode, continues next frame figure
As display.In fact, the first electrode 42 in touch detection as touch detection electrode, when showing driving as display
Driving electrodes.
The first detection and localization electrode 401, the second detection and localization electrode 402 can be set in 42 institute of first electrode
In layer, perhaps it is arranged in the 44 place layer of second electrode or be arranged in the first electrode 42 independent one layer.It is described
An also settable protective layer (such as: glass cover-plate) above first electrode 42, user can be touched by touching protective layer
The operation of control.The present invention does not make to have to the layer position of the first detection and localization electrode 401, the setting of the second detection and localization electrode 402
Body limits.
The touch detection circuit 410 includes amplification module 411, analog-digital converter 412, processor 413, multiplexer
414, control unit 415, charging module 416, first switch K1 and second switch K2.The multiplexer 414 includes can
The first input/output terminal and the second input/output terminal output and input for signal.The multiple first electrode 42, first
Detection and localization electrode 401 and the second detection and localization electrode 402 connect the first input/output terminal of the multiplexer 414, institute
The conduction terminal that charging module 416 connects the first switch K1 is stated, another conduction terminal of the first switch K1 connects institute
The second input/output terminal of multiplexer 414 is stated, the second input/output terminal of the multiplexer 414 further passes through
Two conduction terminals of second switch K2 are connected to the amplification module 411.The amplification module 412 connects the analog-digital converter
412, the analog-digital converter 412 connects the processor 413.Described control unit 415 is connected respectively to the first switch
The control terminal of K1 and second switch K2.Such as, but not limited to, the first switch K1 and second switch K2 is to include one to control
The trigistor at end processed and two conduction terminals, by enabling to two conductings to control terminal application high level or low level
Hold on or off.
In the present embodiment, described control unit 415 is capable of providing square-wave pulse or string wave pulse signal to be used to control institute
State first switch K1 and second switch K2 on or off.The first switch K1 and second switch K2 can be NMOS transistor
And PMOS transistor, the control signal exported by described control unit 415 are rationally arranged, so that the first switch K1 and
Two switch K2 will not be simultaneously turned on or be turned off always.The first electrode 42, first is positioned by the multiplexer 414
Detecting electrode 401 and the second detection and localization electrode 402 divide for multiple sense channels (or being channel), and each sense channel includes
Multiple first electrodes 42 and/or the first detection and localization electrode 401 and the second detection and localization electrode 402, and each sense channel
A corresponding different amplification module 411.The touch detection circuit course of work is described by taking a sense channel as an example below.
When the touch display panel is in touch detection mode, described control unit 415 sends pulse control signal
To the first switch K1 and second switch K2.When the first switch K1 conducting and second switch K2 shutdown, the charging mould
Block 416 is by the multiplexer 414 to the first electrode 42, the first detection and localization electrode 401 and the second detection and localization
The touch detection capacitor charging of electrode 402, specifically, charging module 416 is to the first electrode 42 or the first for touch detection
Detection and localization electrode 401, the connection of the second detection and localization electrode 402 and the parasitic capacitance (i.e. self-capacitance) constituted to itself and ground carry out
Charging.When the first switch K1 shutdown and second switch K2 conducting, the touch detection capacitor is multiple by the multichannel
It is discharged with device 414, charge a part on the touch detection capacitor is transferred on the capacitor in the amplification module 411.With
The first switch K1 and second switch K2 be constantly turned on and off, the amplification module 411 is to touch detection electricity
The pulse signal that capacity charge, electric discharge are formed carries out signal enhanced processing, and generates the capacitor output signal of corresponding amplification, the mould
Number converter is by the voltage signal conversion position digital signal that amplification module exports and is output to the processor 413.The processing
Device 413 carries out the localization process of touch detection according to the digital signal that analog-digital converter 412 exports.The charging module 416 can
Think power module or other voltage follower circuits, and the output voltage of the charging module 416 can for 5V or 3V, 8V,
10V, 15V etc., the present invention is not especially limited.
In some change embodiments of above-described embodiment, the multiplexer 414 be can be omitted, described for touching inspection
The first electrode 42 and keeper electrode 401,402 of survey can be directly connected to corresponding first switch K1 and second switch K2, Jin Erlian
It is connected to charging module 416 and amplification module 411.
Figure 14 is please referred to, the present invention also provides a kind of touch detecting method, the touch detecting method includes:
Step S1, provides multiple first electrodes with the first extending direction and two are arranged in the first electrode two sides
And the detection and localization electrode that intersects with the first electrode extended line；
Step S2, the self-capacitance size by detecting the first electrode judge touch location with first electrode extension side
Coordinate on the direction of intersection；
Step S3, the self-capacitance size by detecting detection and localization electrode judge touch location in first electrode extending direction
On coordinate.
In further embodiment, the touch detecting method, which can also include: that offer is multiple, has the second extending direction
And the second electrode mutually overlapping with the first electrode and shining between the first electrode and second electrode is set
Layer, the first electrode and second electrode collectively form a display area, and the first electrode and detection and localization electrode are common
Constitute touch detection region.
In further embodiment, the touch detecting method can also include that the touch detection region is divided into multiple touchings
Key area is touched, shows the user interface of the neighbouring detection and localization electrode in the multiple key area.
The present invention also provides a kind of touch detection circuit for above-mentioned touch display unit, the touch detection circuit energy
It is enough in the touch action and touch location for detecting the touch display panel in two different directions, including described touch shows
Show the coordinate on the coordinate on the first electrode extending direction of panel and the direction intersected with the first electrode extending direction.Institute
Stating touch detection circuit can be set in the touch display panel, can also as a part of the touch display panel
To be arranged outside the touch display panel.
The present invention also provides a kind of display device, the display includes above-mentioned touch display panel and touch detection electricity
Road.
The present invention also provides a kind of electronic equipment, the electronic equipment may include any of above-described embodiment or it is combined
Touch display panel, touch detection circuit use above-mentioned touch detecting method, and the electronic equipment can be mobile phone, plate
Computer, laptop, e-book, electronic watch, augmented reality/virtual reality device, human action detection device are driven automatically
Sail automobile, smart home device, security device, the device with human-computer interaction function such as intelligent robot.
Compared to the prior art, the present invention is by being arranged detection and localization electrode, the first electrode in first electrode two sides
It can be used in detecting touch action, and institute with the detection and localization electrode including the first keeper electrode, the second keeper electrode
State that first electrode can positioning touch location, the detection and localization electrode can be on the direction intersected with its extending direction
Positioning touch location on the extending direction of one electrode overcomes prior art PMOLED to realize two-dimensional touch positioning
Touch display panel there was only the technical issues of touch detection of single direction.In addition, the present invention has neighbouring institute by configuring
The user interface of the first detection and localization electrode and the second detection and localization electrode is stated, so that user touches position when carrying out touch action
It sets to generate with first electrode and the first detection and localization electrode or first electrode and the second detection and localization electrode and overlap, so as to
By the self-capacitance size or variation that detect the first electrode and the first, second detection and localization electrode；Or described first,
The size of mutual capacitance between second detection and localization electrode and first electrode or variation determine the two-dimensional coordinate direction of touch location.
Inventive touch detection method can be used in above-mentioned touch display panel, therefore inventive touch display panel, touch detection electricity
Road and electronic equipment have preferable user experience.
" length " that is likely to occur in description of the invention, " width ", "upper", "lower", "front", "rear", " back side ", " just
The orientation or positional relationship of the instructions such as face ", "vertical", "horizontal", " top ", " bottom ", " inside ", " outside " is based on attached drawing
Shown in orientation or positional relationship, be merely for convenience of the description embodiment of the present invention and simplify description, rather than indication or suggestion
Signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this
The limitation of invention.Similar label and letter indicate similar terms in the accompanying drawings, therefore, once determined in a certain Xiang Yi attached drawing
Justice does not need then that it is further defined and explained in subsequent attached drawing.Meanwhile in the description of the present invention, term
" first ", " second " etc. are only used for distinguishing description, are not understood to indicate or imply relative importance.In description of the invention
In, " a variety of " are meant that at least two, and the meaning of " plurality " is at least two, unless otherwise specifically defined.This hair
In bright description, it is also necessary to which explanation is unless specifically defined or limited otherwise, " setting ", " installation ", " connection " should be done extensively
Reason and good sense solution may be a detachable connection for example, it may be being fixedly connected, or be integrally connected；It can be mechanical connection,
It can be electrical connection；It can be and be directly connected to, be also possible to be indirectly connected with by intermediary, can be inside two elements
Connection.For the ordinary skill in the art, can be understood with concrete condition above-mentioned term in the present invention specifically contain
Justice.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Term used in claims, which should not be construed as to invent, is limited to this explanation
Specific embodiment disclosed in book.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of touch display panel, which is characterized in that multiple along second including multiple first electrodes extended in a first direction
Second electrode that is that direction extends and overlapping with the first electrode, is arranged in the first electrode two sides and prolongs with first electrode
The detection and localization electrode of long line intersection, the first electrode and second electrode can be used in display driving, the first electrode and
Detection and localization electrode can be used in touch detection, the first electrode can be used in detecting touch location with its extending direction phase
Coordinate on the direction of friendship, the detection and localization electrode can be used in detecting touch location on the first electrode extending direction
Coordinate, the touch display panel shows the user interface of the neighbouring detection and localization electrode in the display stage.
2. touch display panel according to claim 1, which is characterized in that the touch display panel timesharing is shown
Driving and touch detection, the touch display panel further include in the touch detection stage for detecting the first electrode and institute
It states the touch detection circuit of the self-capacitance of detection and localization electrode, be used to progressively scan sweeping for the second electrode in the display stage
It retouches driving circuit and provides the data drive circuit of electric current for the first electrode.
3. touch display panel according to claim 1, which is characterized in that the first electrode constitutes first electrode layer,
The second electrode constitutes the second electrode lay, and the detection and localization electrode and the first electrode are arranged in same layer, Huo Zhesuo
Detection and localization electrode and second electrode setting are stated in same layer or detection and localization electrode setting in first electricity
Independent one layer on extremely.
4. touch display panel according to claim 1, which is characterized in that the first electrode and detection and localization electrode are total
With touch detection region is constituted, the touch detection region division is multiple touch key-press regions, and the touch display panel exists
The display area in the corresponding touch key-press region has the user interface of the neighbouring detection and localization electrode.
5. touch display panel according to claim 1, which is characterized in that the touch display panel further includes that setting exists
Luminescent layer between first electrode and second electrode, the luminescent layer include electroluminescent organic material, when first electrode and
The luminescent layer can correspond to luminous when having electric current to flow through between two electrodes.
6. touch display panel according to claim 2, which is characterized in that the touch detection circuit includes amplification mould
Block, analog-digital converter and processor, the amplification module receive the charge variation of the self-capacitance of the first electrode, the positioning
The charge variation of the charge variation of the self-capacitance of detecting electrode and the first electrode and the interelectrode mutual capacitance of detection and localization
And exporting the touch detection voltage of corresponding amplification to the analog-digital converter, the analog-digital converter is according to the touch detection of simulation
For voltage signal output digit signals to processor, the processor obtains the result of touch detection after carrying out signal processing.
7. touch display panel according to claim 6, which is characterized in that the multiple first electrode and positioning inspection
The self-capacitance for surveying electrode is defined as multiple touch detection capacitors, the amplification module of the touch detection circuit include first switch,
Second switch, resistance, third switch, amplification capacitor and amplifier, high level voltage are connected by the first switch and touch inspection
One end of capacitor is surveyed, the touch detection capacitor other end is grounded, and one of first switch described in the touch detection capacitance connection
End is also connected to the electrode input end of amplifier by the second switch, resistance, and the output end of the amplifier passes through amplification
Electrode input end of the capacitance connection to the amplifier, the negative input ground connection of the amplifier, the third switch and institute
It states amplification capacitor both ends and is connected between the output end and electrode input end of the amplifier.
8. touch display panel according to claim 1, which is characterized in that the first electrode layer and the second electrode lay are
The structure or first electrode layer and the second electrode lay of the composite layer of ITO layer or ITO/Ag/ITO are made of opaque conductive material.
9. a kind of touch detection circuit, which is characterized in that for any touch display panel of the claims 1~8,
The touch detection circuit is used to detect the touch location of the touch display panel.
10. a kind of electronic equipment, which is characterized in that described including the touch display panel as described in claim 1~8 is any
Electronic equipment is mobile phone, tablet computer, laptop, e-book, electronic watch, augmented reality/virtual reality device, human body
Action detection device, autonomous driving vehicle, smart home device, security device, one of intelligent robot.
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| US20180136775A1 (en) * | 2016-11-11 | 2018-05-17 | Solomon Systech (Shenzhen) Limited | Reconfigurable touch sensing for touch-display panel |
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| CN101937282A (en) * | 2009-06-30 | 2011-01-05 | 索尼公司 | Touch detection device and display device having touch sensor function |
| CN105335009A (en) * | 2015-12-03 | 2016-02-17 | 深圳磨石科技有限公司 | Touch display device and electronic device |
| US20180136775A1 (en) * | 2016-11-11 | 2018-05-17 | Solomon Systech (Shenzhen) Limited | Reconfigurable touch sensing for touch-display panel |
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