CN109901751A - PMOLED touch display panel, touch detection circuit, display device and electronic equipment - Google Patents
PMOLED touch display panel, touch detection circuit, display device and electronic equipment Download PDFInfo
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- CN109901751A CN109901751A CN201910218146.6A CN201910218146A CN109901751A CN 109901751 A CN109901751 A CN 109901751A CN 201910218146 A CN201910218146 A CN 201910218146A CN 109901751 A CN109901751 A CN 109901751A
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Abstract
The invention discloses a kind of PMOLED 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 invention also discloses a kind of touch detection circuit for above-mentioned PMOLED touch display panel and display equipment and electronic equipment including above-mentioned PMOLED 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 PMOLED touch display panel of better user experience and
Touch detection circuit, display device 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 touch 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 PMOLED touch display panel again.However, because PMOLED
The reasons such as the arrangement of the electrode of touch display panel, PMOLED electrode, which is used as, will appear asking for touch positioning in touch detection
Topic, can only be detected in a dimension and cannot achieve two-dimensional localization, the usage experience of user is poor.
Summary of the invention
The object of the present invention is to provide a kind of PMOLED touch display panels with preferable user experience, touch detection electricity
Road, display device and electronic equipment.
One aspect of the present invention discloses a kind of PMOLED touch display panel, extends in a first direction including multiple
First electrode, multiple second electrodes extending in a second direction overlapped with the first electrode and setting are 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 and drive
Dynamic, the first electrode and detection and localization electrode can be used in touch detection, and the first electrode can be used in detection and touch position
The coordinate on the direction intersected with its extending direction is set, the detection and localization electrode can be used in detecting touch location described
Coordinate on the extending direction of first electrode.
Optionally, the PMOLED touch display panel timesharing carries out display driving and touch detection, the first electrode
And the self-capacitance of the detection and localization electrode is detected in the touch detection stage by a touch detection circuit；The PMOLED touching
Display panel is touched to further include scan drive circuit for progressively scanning the second electrode in the display stage and be described first
The data drive circuit of electrode offer electric current.
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, viewing area of the PMOLED touch display panel in the correspondence touch key-press region
Domain has the user interface of the neighbouring detection and localization electrode.
Optionally, the PMOLED touch display panel further includes that setting shines between the first electrode and the second electrode
Layer, the luminescent layer includes electroluminescent organic material, the hair when having electric current to flow through between first electrode and second electrode
Photosphere can correspond to luminous.
Optionally, the first electrode and second electrode vertically overlap, and the detection and localization electrode includes that two settings exist
The multiple first electrode two sides and the detection and localization electrode parallel with the second electrode, the detection and localization electrode can be used
It can be used to detect the coordinate of touch location in a first direction, the first electrode on the PMOLED touch display panel
Detect the coordinate of touch location in a second direction on the PMOLED touch display panel.
A kind of touch detection circuit is also disclosed in one aspect of the present invention, is used for above-mentioned PMOLED and touches display surface
Plate, the touch detection circuit are used to detect the touch location of the two-dimensional directional of the PMOLED touch display panel.
Optionally, the touch detection circuit includes amplification module, analog-digital converter and processor, and the amplification module connects
Receive the self-capacitance of the first electrode, the self-capacitance of the detection and localization electrode and the first electrode and detection and localization electrode
Between mutual capacitance charge variation and export the touch detection voltage of corresponding amplification to the analog-digital converter, the analog-to-digital conversion
Device obtains after carrying out signal processing according to the touch detection voltage signal output digit signals of simulation to processor, the processor
The result of touch detection.
One aspect of the present invention also discloses a kind of display device, and the display device includes that PMOLED touches display surface
Plate and touch detection circuit for detecting the PMOLED touch display panel touch location, the PMOLED includes above-mentioned
PMOLED touch display panel, the touch detection circuit include above-mentioned touch detection circuit.
One aspect of the present invention also discloses a kind of electronic equipment, including above-mentioned display device, the electronic equipment
For 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 can positioning touch location can to realize two-dimensional touch positioning on the extending direction of first electrode
The coordinate of positioning touch location on the different directions of two-dimensional surface overcomes prior art PMOLED touch display panel and only has
The technical issues of touch detection of single direction.In addition, PMOLED touch display panel of 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
Self-capacitance size by detecting the first electrode and the first, second detection and localization electrode determines that the two dimension of touch location is sat
Mark direction.Therefore, PMOLED touch display panel of the present invention has preferable user experience.It touches and shows for above-mentioned PMOLED
The touch detection circuit of panel and display device and electricity including above-mentioned PMOLED touch display panel and touch detection circuit
Sub- equipment equally has 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 PMOLED touch display panel or touch screen.
For self-capacitance PMOLED touch display panel, when the touch detection region of the non-contact surface plate of human body, respectively
The capacitor that capacitance electrode is born is a fixed value, when human body touches screen, capacitor that corresponding self-capacitance electrode is born
It is superimposed body capacitance for fixed value, the capacitance variation by detecting each self-capacitance electrode may determine that touch location.Substantially
Principle is exactly the charge-discharge circuit being constantly charged and discharged.If with finger or other object touch panels region,
Touch area counter electrode self-capacitance size will be changed, charge and discharge charge is caused to change, the corresponding output electricity of amplifier
Pressure can also change.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 PMOLED touch display panel includes first electrode layer, with described first
The second electrode lay that electrode layer is oppositely arranged, and the luminescent layer being arranged between the first electrode layer and the second electrode lay.
The first electrode layer includes multiple first electrodes extended in a first direction, and the second electrode lay includes multiple along second party
To the second electrode of extension.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 PMOLED touch display panel can excite the luminescent layer at different locations, so that described
Luminescent layer shines in the pixel of different location or does not shine.
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 PMOLED touch display panel can be for touch control or the PMOLED of touch detection function touches
Display panel.Certainly, the present invention is not limited thereto, in the other embodiment of the present invention, the PMOLED touch display panel
Any LED based touch display panel that can be realized for any organic or inorganic electroluminescent material.
The PMOLED touch display panel connection display driver chip and touch detection chip, the display driver chip
It can be independent two chips with touch detection chip, be also possible to be integrated in a chip, such as by touch-control and show
Showing that driver integrates (Touch and Display Driver Integration, TDDI) Integration ofTechnology is a chip.Institute
It states display driver 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 PMOLED touches display
Panel has the refresh rate of 100Hz, then each frame picture should complete the scanning of second electrode in 10ms.First electricity
Pole can be described as column electrode or SEG electrode again, and the second electrode can be described as row electrode or COM electrode, the turntable driving electricity again
Road can be described as horizontal drive circuit again, and the data drive circuit can be described as column drive circuit again.Some changes of the invention are implemented
In example, the first electrode COM electrode, second electrode is SEG electrode.The ground terminal can be the earth ground terminal, and equipment connects
Ground terminal or other ground terminals defined as needed, should broadly understood in the present invention, be not specifically limited to this.
In the present embodiment, in order to realize touch detection function, the first electrode of the PMOLED touch display panel can be with
It is multiplexed with touch detection electrode, the touch detection circuit connecting by one with first electrode detects the electricity certainly of the first electrode
Hold variation, is able to detect that the position that external object (such as: finger) touches on the PMOLED touch display panel, thus
Realize touch detection.When carrying out touch detection, if the finger of user touches the glass cover of the neighbouring first electrode
When plate, because human body itself charges, parasitic capacitance is formed between finger and the first electrode, it is corresponding to touch range with finger
The self-capacitance of first electrode increases.Self-capacitance changes the charge and discharge charge variation for leading to touch detection circuit, and processor can
Self-capacitance size is calculated according to the charge and discharge quantity of electric charge, or self-capacitance size is calculated according to pulse voltage value.The touch detection
Circuit can determine corresponding from electricity by the pulse signal voltage changing value or charge and discharge charge variation amount in detection first electrode
Hold the first electrode changed, so as to determine the position touched.That is, being able to confirm that hand by first electrode
Position or coordinate of the touch location of finger on the direction intersected with the extending direction of the first electrode.
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 PMOLED touch display panel can also include multiple detection and localization electrodes, and the multiple detection and localization electrode is strip electricity
Pole has the extending direction inconsistent with the extending direction of the first electrode.Such as, but not limited to: the detection and localization electrode
The extending direction for extending perpendicularly to the first electrode.Due to first electrode extending direction be first direction, second
The extending direction of electrode is second direction, when second direction is perpendicular to first direction, then the detection and localization electrode at this time
Extending direction it is consistent with second direction.The detection and localization electrode is only used for touch detection rather than display driving, energy
It is enough in touch location position on the extending direction of first electrode of the detection finger on glass cover-plate.The detection and localization
Electrode connects the touch detection circuit, can connect the scan drive circuit or be not connected to the scan drive circuit.Institute
Stating detection and localization electrode can be arranged with the first electrode layer in same layer, or is arranged by insulating layer in the first electrode
On layer, or with the second electrode lay setting in same layer.Described two detection and localization electrodes can be set in same layer,
Or it is arranged 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 of the PMOLED touch display panel
Region, therefore alternatively the first electrode and second electrode together constitute the display of the PMOLED touch display panel
Region.Simultaneously, the first electrode is also multiplexed with touch detection electrode, therefore the multiple first electricity in touch detection
Pole and detection and localization electrode collectively form the touch detection region of the PMOLED 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 described a moment
PMOLED touch display panel perhaps in the display stage or is in the touch detection stage, without carrying out display drive simultaneously
Dynamic and touch detection.For example, the touch detection circuit after display of the image of each frame to the first electrode from
Capacitance variations are detected.Therefore, the first electrode and second electrode can be used in display driving, the first electrode and two
A detection and localization electrode can be used in touch detection, the first electrode can be used in detecting touch location with its extending direction
Coordinate on the direction of intersection, described two detection and localization electrodes can be used in detection touch location and extend in the first electrode
Coordinate on direction.
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.
PMOLED touch display panel of the present invention is the PMOLED display panel with touch detection function, works as light beam
When being emitted from the one side of substrate OLED, the PMOLED touch display panel is bottom light emitting-type display panel；When light beam is from far from lining
When bottom side is emitted, the PMOLED touch display panel is top light emitting-type display panel；When light beam is simultaneously from OLED substrate one
When the side outgoing of side and separate substrate, the PMOLED touch 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 retouched with PMOLED touch display panel
It states, however PMOLED touch display panel of the present invention can also be used for not needing in the other embodiments that image is shown, such as with
In the touch tablet (Touch Pad) of laptop, the first electrode layer and the second electrode lay are not needed transparent at this time, are used for
The glass substrate of protection can be replaced with other materials.
Referring to Fig. 1, a PMOLED touch display panel includes by multiple along first in one embodiment of the present of invention
Direction extend first electrode 12 constitute first electrode layer (not labeled), by multiple extending in a second direction and first electrode
The second electrode lay (not labeled) for the relatively described first electrode layer that the second electrode 14 of 12 overlapping settings is constituted is arranged described
Luminescent layer 13 between first electrode layer and the second electrode lay, the glass cover-plate 11 being arranged in the first electrode layer and
12 two sides of first electrode are set and are intersected vertically with the extended line of the first electrode 12 or first electrode 12 first
Detection and localization electrode 101 and the second detection and localization electrode 102.The first electrode 12 and second electrode 14 are not directly coupled,
But the setting that is overlapping.In the present embodiment, such as, but not limited to, the first electrode 12 is parallel to each other, the second electrode
14 are parallel to each other and vertical with the second electrode 12.The first electrode layer is located above the second electrode lay.Described
11 top of glass cover-plate, user can be seen image and show and carry out touch control in 11 upper surface of glass cover-plate.Described
The extended line of one electrode 12 includes anti-along the extended line of the extending direction of first electrode 12 or along the extending direction of first electrode 12
The extended line in direction.
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,
Or be arranged in different layers, 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, first electricity
Pole 12 and second electrode 14 can be respectively used to provide electric current for the luminescent layer 13 and receive electric current from the luminescent layer 13.
Please refer to Fig. 3, the PMOLED touch display panel further includes data drive circuit 120 and turntable driving electricity
Road 130.One touch detection circuit 110 connects the first electrode 12, the first detection and localization electrode 101 and the second detection and localization
Electrode 102, for detecting the electricity certainly of the first electrode 12, the first detection and localization electrode 101 and the second detection and localization electrode 102
Hold variation.The data drive circuit 120 connects the first electrode 12, for providing electric current to the first electrode 12.Institute
It states scan drive circuit 130 and connects the second electrode 14, drive the second electrode 14 for progressively scanning, so that correspondence is swept
The second electrode 14 retouched is grounded, thus have electric current process between the second electrode 14 and first electrode 12 of corresponding scanning, and other
Not scanned second electrode 14 then disconnects ground connection and is not turned between first electrode 12.Progressively scanned in this way by repetition,
Show that completing a frame image shows line by line.In the interim that every frame image is shown, the PMOLED touch display panel is in
Touch detection mode, the touch detection circuit 110 are fixed to the first electrode 12, the first detection and localization electrode 101 and second
Position detecting electrode 102 carries out touch detection, and the scan drive circuit 130 provides the common voltage of high level to second electricity
Pole 14, the touch detection circuit 110 make the first electrode 12, the first detection and localization electrode 101 and the second detection and localization
The self-capacitance of electrode 102 be electrically charged, discharge and detect charge and discharge quantity of electric charge signal or detection coupled voltages signal, and by pair
The quantity of electric charge signal or coupled voltages signal are further processed, and then realize external object (such as: finger) described
The detection of touch action and touch location on PMOLED 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 PMOLED and touches display surface
The display area of plate, thus alternatively the first electrode 12 and second electrode 14 together constitute the PMOLED touch it is aobvious
Show the display area of panel.Simultaneously, the first electrode 12 is also multiplexed with touch detection electrode in touch detection, therefore
The multiple first electrode 12 and the first detection and localization electrode 101, the second detection and localization electrode 102 collectively form described
The touch detection region of PMOLED touch display panel.It will be apparent that user's finger will affect touch location when touch detection
The self-capacitance of the first electrode 12 at place and the first detection and localization electrode 101 or the second detection and localization electrode 102, and finger ruler
It is very little be noticeably greater than the first electrode 12, the first detection and localization electrode, the second detection and localization electrode 102 width, so with
It is so high in the resolution ratio that the touch area resolution ratio of touch detection does not need display area.It therefore, can be in touch detection
The first electrode 12 is divided for several sense channels, each sense channel includes a certain number of first electrodes 12.Each
The touch detection circuit 110 is input to after the signal of sense channel is in parallel.In the present embodiment, the touch detection circuit 110
It may include amplification module, the amplification module may include multiple being connected respectively to the first electrode, the first detection and localization
The amplifier of electrode and the second detection and localization electrode or a part of in above-mentioned multiple electrodes can be connected to one by switch
A amplifier, or be input to one after the quantity of electric charge signal of the charge and discharge of multiple above-mentioned electrodes is summed by adder and put
Big device.
Please refer to Fig. 4, it is assumed that 14 number of second electrode of the PMOLED touch display panel is n.In Fig. 4
Gl1 to gln (n is positive integer) respectively indicates the scanning signal being applied in n second electrode 14.Display the stage, it is described
PMOLED touch display panel is in display drive mode, and the n second electrode 14 is scanned in scanning signal gl1 to gln and driven
Successively be grounded under dynamic so that between corresponding first electrode 12 and ground connection second electrode 14 can electric current flow through, to complete m
Frame image is shown.In the touch detection stage, the touch detection circuit 110 works, and the first electrode 12 is used for touch detection,
The second electrode 14 is connected to Vcom or is connected to specific voltage to cooperate touch detection.It is described after the touch detection stage
PMOLED touch display panel enters m+1 frame and 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 Ke Bao of the PMOLED touch display panel
8 touch key-press regions are included, first group of touch key-press region A1, A2 including the neighbouring first detection and localization electrode 101,
A3, A4, and second group of touch key-press region B1, B2, B3, B4 of the neighbouring second detection and localization electrode 102.Therefore, described 8
A touch key-press region 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, described in configuration
The icon touched or button can will be indicated adjacent to institute when user interface (UI) of PMOLED touch display panel in user interface
The position setting for stating the first detection and localization electrode 101 or the second detection and localization electrode 102, so that user is in touch operation
The first detection and localization electrode 101 or the corresponding PMOLED touch display panel of the second detection and localization electrode 102 will necessarily be touched
Region.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 touch control
User interface.In the display stage, in display area corresponding with touch key-press region adjacent to the position of the detection and localization electrode
It sets, shown PMOLED touch display panel shows neighbouring first detection and localization region 101 or the second detection and localization region 102
User interface.Therefore, user's actual touch position and the first detection and localization electrode 101 or second fixed in touch operation
Position detecting electrode 102 overlaps, so as to cause the first detection and localization electrode 101 or the second detection and localization electrode 102
Self-capacitance variation.
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.Such as, but not limited to, the detection and localization electrode may include multiple is arranged independent
The strip shaped electric poles of one layer of ITO layer.
In the change embodiment of above-described embodiment, the touch detection region can be divided into multiple touch key-press regions,
The PMOLED touch display panel has the neighbouring detection and localization electricity in the display area in the correspondence touch key-press region
The user interface of pole.
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 PMOLED 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, be the schematic diagram of one of above-described embodiment change embodiment, the PMOLED touch display panel with
The structure and realization principle of PMOLED touch display panel are essentially identical in above-described embodiment, and difference is: first positioning
Detecting electrode 101, the second detection and localization electrode 102 and the second electrode lay are arranged in same layer.
Referring to Fig. 9, be the schematic diagram of one of above-described embodiment change embodiment, the PMOLED touch display panel with
The structure and realization principle of PMOLED touch display panel are essentially identical in above-described embodiment, and difference is: first positioning
Detecting electrode 101 and the second detection and localization electrode 102 are arranged in the first electrode layer in independent one layer.At this time described first
Detection and localization electrode 101 and the second detection and localization electrode 102 are between glass cover-plate 11 and first electrode 12.
Referring to Fig. 10, being the schematic diagram of a change embodiment of above-described embodiment, the PMOLED touch display panel
Essentially identical with the structure and realization principle of PMOLED touch display panel in above-described embodiment, difference is, further includes setting
Other multiple detection and localization electrodes in independent one layer between the first electrode 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 the extending direction in first electrode 12
On touch location is detected and is positioned, belong to the scope of the present invention.
Please refer to Figure 11, in another embodiment of PMOLED touch display panel of the present invention, the PMOLED touches display
Panel includes multiple first electrodes 22 extended in a first direction, multiple extending in a second direction overlapping with the first electrode
Second electrode 24, be arranged between the first electrode 22 and second electrode 24 luminescent layer (not shown), be arranged described
22 two sides of first electrode and the first detection and localization electrode 201 intersected with 22 extended line of first electrode and the second detection and localization
Electrode 202, the data drive circuit 220 being connect with the first electrode 22, the turntable driving being connect with the second electrode 24
Circuit 230 and the touching being connect with the first electrode 22, the first detection and localization electrode 201 and the second detection and localization electrode 202
Touch detection circuit 210.The first direction and second direction intersection, such as intersect vertically or non-perpendicular intersection.The touch
Detection circuit 210 is used for when the PMOLED touch display panel is in touch detection mode to the first electrode 22, the
One positions detecting electrode 201, the capacitance variations of the second detection and localization electrode 202 are detected, thus localized external object (example
Touch location such as: finger).The data drive circuit 220, for providing electric current to the first electrode 22.The scanning
Driving circuit 230 connects the second electrode 24, drives the second electrode 24 for progressively scanning, so that the of corresponding scanning
Two electrodes 24 ground connection, thus have electric current process between the second electrode 24 and first electrode 22 of corresponding scanning, and other are not swept
The second electrode 24 retouched then disconnects ground connection and is not turned between first electrode 22.The luminescent layer may include corresponding transmitting
The luminescence unit of the colors such as red, green, blue, the luminescence unit can electroluminescent when electric current flows through.By repeat it is above-mentioned by
Row scanning shows that after the completion of all second electrodes 24 are scanned, the PMOLED touch display panel completes a frame figure line by line
As display, the PMOLED touch display panel enters touch detection mode from display drive mode.The touch detection circuit
The self-capacitance of 210 pairs of first electrodes 22 and the first detection and localization electrode 201, the second detection and localization electrode 202, which changes, to carry out
Detection, and the touch location of localized external object (such as: finger), the positioning include confirming the touch location described the
Coordinate on the extending direction of one electrode 22 and perpendicular to the coordinate on the extending direction of the first electrode 22.To described first
After electrode 22 and the first detection and localization electrode 201, the second detection and localization electrode 202 complete touch detection, the PMOLED is touched
Display panel terminates touch detection mode, into display drive mode, continues next frame image and shows.In fact, described first
Electrode 22, as touch detection electrode, display driving electrodes is used as when showing driving in touch detection.
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 PMOLED touch display panel of the present invention comprising multiple along first party
Exist to the first electrode 32, multiple second electrodes 34 extending in a second direction overlapped with the first electrode, setting of extension
Luminescent layer (not shown) between the first electrode 32 and second electrode 34, setting 34 two sides of second electrode and with institute
State the first detection and localization electrode 301 and the second detection and localization electrode 302 and described first of the extended line intersection of second electrode 34
Data drive circuit 320 that electrode 32 connects, the scan drive circuit 330 that is connect with the second electrode 34 and with described the
The touch detection circuit 310 of two electrodes 34, the first detection and localization electrode 301 and the connection of the second detection and localization electrode 302.This implementation
In example, the first direction and second direction are mutually perpendicular in present invention change embodiment, the first direction and second direction
It can also be with out of plumb.The touch detection circuit 310 is used to be in touch detection mode in the PMOLED touch display panel
When the variation of the self-capacitance of the second electrode 34, the first detection and localization electrode 301, the second detection and localization electrode 302 is examined
It surveys, the touch location of (such as: finger) thus localized external object.The data drive circuit 320, for first electricity
Pole 32 provides electric current.The scan drive circuit 330 connects the second electrode 34, for progressively scanning driving second electricity
Pole 34, so that the second electrode 34 of corresponding scanning is grounded, to have between the second electrode 34 and first electrode 32 of corresponding scanning
Electric current passes through, and other not scanned second electrodes 34 then disconnect ground connection and are not turned between first electrode 32.The hair
Photosphere may include the luminescence unit of the colors such as corresponding transmitting red, green, blue, and the luminescence unit can electroluminescent hair when electric current flows through
Light.By repeating above-mentioned progressive scan, showing line by line, after the completion of all second electrodes 34 are scanned, the PMOLED touching
It touches display panel one frame image of completion and shows that the PMOLED touch display panel enters touch detection mould from display drive mode
Formula.The touch detection circuit 310 is to the second electrode 34 and the first detection and localization electrode 301, the second detection and localization electrode
302 self-capacitance variation is detected, and the touch location of localized external object (such as: finger), and the positioning includes confirmation
Coordinate of the touch location on the extending direction of the second electrode 34 and the extension side perpendicular to the second electrode 34
Upward coordinate.The second electrode 34 and the first detection and localization electrode 301, the second detection and localization electrode 302 are completed to touch
After detection, the PMOLED touch display panel terminates touch detection mode, into display drive mode, continues next frame image
Display.In fact, the second electrode 34 in touch detection as touch detection electrode, driven when showing driving as display
Moving electrode.
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 PMOLED touch display panel of the present invention, the PMOLED touches display
Panel includes multiple first electrodes 42 extended in a first direction, multiple extending in a second direction overlapping with the first electrode
Second electrode 44,42 two sides of first electrode are set and intersect with 42 extended line of first electrode first positioning inspection
Survey electrode 401 and the second detection and localization electrode 402, the data drive circuit 420 that connect with the first electrode 42 and described the
The scan drive circuit 430 and determine with the first electrode 42, the first detection and localization electrode 401 and second that two electrodes 44 connect
The touch detection circuit 410 that position detecting electrode 402 connects.In the present embodiment, the first direction and second direction are mutually perpendicular to.
Stating first direction and second direction described in present invention change embodiment can not also be mutually perpendicular to.The touch detection circuit
410 examine for positioning when the PMOLED touch display panel is in touch detection mode to the first electrode 42, first
Survey electrode 401, the capacitance variations of the second detection and localization electrode 402 are detected, thus localized external object (such as: finger)
Touch location.The data drive circuit 420 is used to provide electric current to the first electrode 22.The scan drive circuit 430
The second electrode 44 is connected, drives the second electrode 44 for progressively scanning, so that the second electrode 44 of corresponding scanning connects
Ground, thus have electric current process between the second electrode 44 and first electrode 42 of corresponding scanning, and other not scanned second electricity
Pole 44 then disconnects ground connection and is not turned between first electrode 42.By repeating above-mentioned progressive scan, showing line by line, when all
After the completion of second electrode 44 is scanned, the PMOLED touch display panel completes the scanning of a frame image, the PMOLED touching
It touches display panel and enters touch detection mode from display drive mode.The touch detection circuit 410 is to the first electrode 42
Self-capacitance variation with the first detection and localization electrode 401, the second detection and localization electrode 402 is detected, and localized external object
The touch location of (such as: finger), the positioning include confirming the touch location in the extending direction of the first electrode 42
On coordinate and perpendicular to the coordinate on the extending direction of the first electrode 42.To the first electrode 22 and the first positioning inspection
After surveying electrode 401, the completion touch detection of the second detection and localization electrode 402, the PMOLED touch display panel terminates to touch inspection
Survey mode continues next frame image and shows into display drive mode.In fact, the first electrode 42 is 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.It is worked that the touch detection circuit 410 is described by taking a sense channel as an example below
Journey.
When the PMOLED touch display panel is in touch detection mode, described control unit 415 sends pulse control
Signal processed is to the first switch K1 and second switch K2.It is described when the first switch K1 conducting and second switch K2 shutdown
Charging module 416 is fixed to the first electrode 42, the first detection and localization electrode 401 and second by the multiplexer 414
The touch detection capacitor charging of position detecting electrode 402, specifically, charging module 416 is to the first electrode 42 for touch detection
Or the connection of the first detection and localization electrode 401, the second detection and localization electrode 402 and the parasitic capacitance constituted to itself and ground are (i.e. from electricity
Hold) it charges.When the first switch K1 shutdown and second switch K2 conducting, the touch detection capacitor passes through described
Multiplexer 414 discharges, and charge a part on the touch detection capacitor is transferred to the capacitor in the amplification module 411
On.As the first switch K1 and second switch K2 are constantly turned on and off, the amplification module 411 examines the touch
Survey capacitor charging, the pulse signal that electric discharge is formed carries out signal enhanced processing, and generates the capacitor output signal for corresponding to amplification, institute
Analog-digital converter is stated the voltage signal that amplification module exports is converted position digital signal and is output to the processor 413.It is described
Processor 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 be 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 PMOLED touch display panel in two different directions, including described
Coordinate on the first electrode extending direction of PMOLED touch display panel and the side intersected with the first electrode extending direction
Upward coordinate.The touch detection circuit can be set in the PMOLED touch display panel, as the PMOLED
A part of touch display panel also can be set outside the PMOLED touch display panel.
The present invention also provides a kind of display device, the display includes above-mentioned PMOLED touch display panel and touches inspection
Slowdown monitoring circuit.
The present invention also provides a kind of electronic equipment, the electronic equipment may include any of above-described embodiment or it is combined
PMOLED touch display panel, touch detection circuit use above-mentioned touch detecting method, and the electronic equipment can be hand
Machine, tablet computer, laptop, e-book, electronic watch, augmented reality/virtual reality device, human action detection dress
It sets, autonomous driving vehicle, smart home device, security device, intelligent robot etc. has the equipment or dress of human-computer interaction function
It sets.
Compared to the prior art, the present invention by first electrode (12,22,32,42) two sides be arranged detection and localization electrode,
The first electrode (12,22,32,42) and including the first keeper electrode (101,201,301,401), the second keeper electrode
Detection and localization electrode including (102,202,302,402) can be used in detect touch action, and the first electrode (12,
It 22,32,42) can on the direction with its extending direction intersected positioning touch location, the detection and localization electrode can
Positioning touch location on the extending direction of one electrode can use two different directions to realize two-dimensional touch positioning
Coordinate overcomes prior art PMOLED touch display panel and there was only single direction in the interior positioning touch location of two-dimensional surface
The technical issues of touch detection.In addition, the present invention by configure have the neighbouring first detection and localization electrode (101,201,
301,401) and the user interface of second detection and localization electrode (102,202,302,402), so that user is carrying out touch action
When touch location and first electrode and the first detection and localization electrode or first electrode and the second detection and localization electrode generate it is overlapping,
So as to pass through the self-capacitance size for detecting the first electrode (12,22,32,42) and the first, second detection and localization electrode
Or variation；Or the mutual capacitance between the first, second detection and localization electrode and first electrode (12,22,32,42) size or
Change the two-dimensional coordinate direction to determine touch location.It is aobvious that inventive touch detection method can be used in above-mentioned PMOLED touch
Show panel, therefore PMOLED touch display panel, touch detection circuit and electronic equipment of the present invention 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 PMOLED touch display panel, which is characterized in that including multiple first electrodes extended in a first direction, multiple
Second electrode that is extending in a second direction and overlapping with the first electrode and setting are in the first electrode two sides and with the
The detection and localization electrode of one electrode extended line intersection, the first electrode and second electrode can be used in display driving, and described the
One electrode and detection and localization electrode can be used in touch detection, the first electrode can be used in detecting touch location with it is described
Coordinate on the direction of first electrode extending direction intersection, the detection and localization electrode can be used in detecting touch location described
Coordinate on the extending direction of first electrode.
2. PMOLED touch display panel according to claim 1, which is characterized in that the PMOLED touch display panel
Timesharing carries out display driving and touch detection, and the self-capacitance of the first electrode and the detection and localization electrode is in touch detection
Stage is detected by a touch detection circuit；The PMOLED touch display panel further includes for progressively scanning in the display stage
The scan drive circuit of the second electrode and the data drive circuit of electric current is provided for the first electrode.
3. PMOLED touch display panel according to claim 1, which is characterized in that the first electrode constitutes the first electricity
Pole layer, the second electrode constitute the second electrode lay, and the detection and localization electrode and the first electrode are arranged in same layer, or
Detection and localization electrode described in person and the second electrode are arranged in same layer or detection and localization electrode setting described the
Independent one layer on one electrode.
4. PMOLED touch display panel according to claim 1, which is characterized in that the first electrode and detection and localization
Electrode collectively forms touch detection region, and the touch detection region division is multiple touch key-press regions, the PMOLED touching
Touching display panel has the user interface of the neighbouring detection and localization electrode in the display area in the correspondence touch key-press region.
5. PMOLED touch display panel according to claim 1, which is characterized in that the PMOLED touch display panel
It further include the luminescent layer of setting between the first electrode and the second electrode, the luminescent layer includes electroluminescent organic material, when
The luminescent layer can correspond to luminous when having electric current to flow through between first electrode and second electrode.
6. PMOLED touch display panel according to claim 1, which is characterized in that the first electrode and second electrode
Vertical overlapping, the detection and localization electrode includes that two settings are put down in the multiple first electrode two sides and with the second electrode
Capable detection and localization electrode, the detection and localization electrode can be used to detect touch location on the PMOLED touch display panel
Coordinate in a first direction, the first electrode, which can be used to detect touch location on the PMOLED touch display panel, to exist
Coordinate in second direction.
7. a kind of touch detection circuit, which is characterized in that touched for any PMOLED of the claims 1~6 aobvious
Show that panel, the touch detection circuit are used to detect the touch location of the two-dimensional directional of the PMOLED touch display panel.
8. touch detection circuit according to claim 7, 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.
9. a kind of display device, which is characterized in that the display device includes PMOLED touch display panel and for detecting
The touch detection circuit of PMOLED touch display panel touch location is stated, the PMOLED includes such as any institute of claim 1~6
The PMOLED touch display panel stated, the touch detection circuit include the touch detection electricity as described in claim 7~8 is any
Road.
10. a kind of electronic equipment, which is characterized in that including display device as claimed in claim 9, the electronic equipment is hand
Machine, tablet computer, laptop, e-book, electronic watch, augmented reality/virtual reality device, human action detection dress
It sets, autonomous driving vehicle, smart home device, security device, one of intelligent robot.
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| CN201910218146.6A CN109901751B (en) | 2019-03-21 | 2019-03-21 | PMOLED touch display panel, touch detection circuit, display device and electronic equipment |
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| CN201910218146.6A CN109901751B (en) | 2019-03-21 | 2019-03-21 | PMOLED touch display panel, touch detection circuit, display device and electronic equipment |
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| CN109901751B (en) | 2024-04-19 |
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