CN109857286A

CN109857286A - Touch display panel, touch detection circuit, display device and electronic equipment

Info

Publication number: CN109857286A
Application number: CN201910218340.4A
Authority: CN
Inventors: 王洁
Original assignee: Shenzhen Xihua Technology Co Ltd
Current assignee: Shenzhen Xihua Technology Co Ltd
Priority date: 2019-03-21
Filing date: 2019-03-21
Publication date: 2019-06-07
Anticipated expiration: 2039-03-21
Also published as: CN109857286B

Abstract

The invention discloses a kind of touch display panels, it is characterized in that, including multiple first electrodes extended in a first direction, multiple second electrodes extending in a second direction overlapped with the first electrode, two detection and localization electrodes 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 two detection and localization electrodes 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, described two detection and localization electrodes 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 touch display panel and the electronic equipments including the touch display panel.Inventive touch display panel, touch detection circuit, display device and electronic equipment have preferable user experience.

Description

Touch display panel, touch detection circuit, display device and electronic equipment

Technical field

The present invention relates to electronic technology field more particularly to a kind of touch display panel of better user experience, 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 with preferable user experience, touch detection circuit and Display device and electronic equipment.

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 the extending in a second direction and second electrode that overlaps mutually with the first electrode are arranged in the first electrode two The side and two detection and localization electrodes intersected with the extended line of first electrode, the first electrode and second electrode can be used in showing Show driving, the first electrode and two detection and localization electrodes can be used in touch detection, and the first electrode can be used in examining Coordinate of the touch location on the direction intersected with first direction is surveyed, described two detection and localization electrodes can be used in detection and touch The coordinate of position in said first direction.

Optionally, the touch display panel timesharing carries out display driving and touch detection, and the touch display panel is also Including the touch detection stage be used for detect the first electrode self-capacitance and two detection and localization electrodes self-capacitance, or The self-capacitance of the first electrode and the touch detection circuit of first electrode and two interelectrode mutual capacitance of detection and localization are detected, It is used in the display stage in the scan drive circuit for progressively scanning the second electrode, and provide electric current for the first electrode Data drive circuit.

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 touch display panel further includes touch detection circuit, and the touch detection circuit is for touching Detection-phase detects the self-capacitance of the second electrode and two detection and localization electrodes, or for detecting the second electrode The mutual capacitance of self-capacitance and the second electrode and two detection and localization electrodes, the display panel further include using in the display stage The data drive circuit of electric current is provided in the scan drive circuit for progressively scanning the second electrode, and for the first 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 judges that touch location exists by detecting the self-capacitance size of the first electrode The coordinate on direction intersected with the extending direction of first electrode, by the self-capacitance size or detection that detect detection and localization electrode The mutual capacitance size of detection and localization electrode and first electrode judges coordinate of the touch location on the extending direction of first electrode.

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 self-capacitance of the first electrode and detection and localization electrode is touch detection capacitor, the amplification module Including first switch, second switch, resistance, third switch, amplification capacitor and amplifier, a high level voltage passes through described the One switch connects one end of the touch detection capacitor, the touch detection capacitor other end ground connection, the touch detection capacitor The one end for connecting the first switch also passes through the second switch, resistance is connected to the electrode input end of amplifier, described to put The output end of big device passes through amplification capacitance connection to the electrode input end of the amplifier, and the negative input of the amplifier connects Ground, the third switch and the amplification capacitor both ends are simultaneously connected between the output end and electrode input end of the amplifier.

One aspect of the present invention also discloses a kind of touch detection circuit, and the touch detection circuit is used for above-mentioned touching Touch display panel, state touch detection circuit can be used in detecting the first electrode and setting the first electrode two sides and with The self-capacitance for the detection and localization electrode that the first electrode intersects in the extended line of its extending direction or the opposite direction of extending direction, Or the mutual capacitance between the detection and localization electrode and first electrode is to obtain 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 includes the detection and localization electricity that first electrode two sides are arranged in Pole, the first electrode can be used in the detection and localization electrode including the first keeper electrode, the second keeper electrode Detect touch action, and the first electrode can on the direction intersected with its extending direction positioning touch location, it is described Detection and localization electrode can on the extending direction of first electrode positioning touch location, to realize two-dimensional touch positioning, The touch display panel for overcoming prior art PMOLED only has the technical issues of touch detection of single direction.In addition, this hair Bright touch display panel, which passes through, configures user circle with the neighbouring first detection and localization electrode and the second detection and localization electrode Face so that user when carrying out touch action touch location and first electrode and the first detection and localization electrode or first electrode and Second detection and localization electrode, which generates, to be overlapped, so as to by detecting the first electrode and the first, second detection and localization electrode Self-capacitance size determine the two-dimensional coordinate direction of touch location.Inventive touch detection circuit is used for above-mentioned touch display surface Plate, electronic equipment of the present invention include above-mentioned touch display panel.Therefore, inventive touch display panel, touch detection circuit and Electronic equipment 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.

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.The first electrode and second electrode are mutually overlapping.One can also be arranged in the first electrode layer to be used for The glass cover-plate or glass substrate of protection.

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.

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 first electrode or first electrode intersect along the extended line of extending direction or the opposite direction of 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 detect touch location on the extending direction of the first electrode Coordinate.

It should be noted that description of the invention be likely to occur other for describe first electrode, etc. for touch detection Word, such as, but not limited to: touch detection electrode or self-capacitance detecting electrode or detecting electrode etc., those skilled in the art It will be appreciated that for equivalent first electrode of the invention.For convenience, first electrode and detection and localization electrode are for touching When detection, touch detection electrode may be collectively referred to herein as.In addition, " first " that occurs in description of the invention, " second ", " row ", Words such as " column " are used for the purpose of facilitating the description of understanding, do not represent any specific restriction.

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 multiple extends in a first direction in one embodiment of the present of invention First electrode 12 constitute first electrode layer (not labeled), multiple settings overlapping with first electrode 12 extending in a second direction Second electrode 14 constitute the relatively described first electrode layer the second electrode lay (not labeled), be arranged in the first electrode layer Luminescent layer 13 between the second electrode lay, the glass cover-plate 11 being arranged in the first electrode layer and it is arranged described 12 two sides of first electrode and the first detection and localization to intersect vertically with the extended line of the first electrode 12 or first electrode 12 electricity Pole 101 and the second detection and localization electrode 102.The first electrode 12 and second electrode 14 are not directly coupled, but staggeredly weight Folded setting.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 parallel to each other And it is vertical with the second electrode 12.The first electrode layer is located above the second electrode lay.In the glass cover-plate 11 Top, 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 prolonging for the opposite direction of the extended line along the extending direction of first electrode 12 or the extending direction along first electrode 12 Long 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 can be also arranged with the second electrode 14 in same layer, or one layer is separately provided in the first electrode layer, this 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 heap Lamination.The first electrode 12 is anode, and the second electrode 14 is cathode, and the first electrode 12 and second electrode 14 can It is 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 charge and discharge quantity of electric charge signal 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.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 touch key-press regions, packet First group of touch key-press region A1, A2, A3, A4 of the neighbouring first detection and localization electrode 101 are included, and neighbouring described second determines Second group of touch key-press region B1, B2, B3, B4 of position detecting electrode 102.Therefore, 8 touch key-press regions can be divided into vertical Four column for being 1,2,3,4 to two rows and lateral coordinates that coordinate is A, B.

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 also not specifically limited.

Above-described embodiment and change embodiment in, it is described it is " neighbouring " refer to the user interface and the detection and localization electricity The distance between pole, which is small enough so that when user carries out touch control operation on a user interface, can touch the detection and localization Electrode corresponding region on the PMOLED touch display panel.

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 the charge variation of the touch detection capacitor and exports the corresponding touch detection voltage amplified to be turned to the modulus Parallel operation 112, the analog-digital converter 112 is according to the touch detection voltage signal output digit signals of simulation to processor 113, institute It states after processor 113 carries out signal processing and obtains the result of touch detection.

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 input.Specifically, the initial charge C1*VDD of touch detection capacitor C1 terminates charge C1*Vcmop, the touching Touching detection capacitor C1 and releasing the quantity of electric charge is C1*VDD-C1*Vcmop.Above-mentioned charge can be converted to 1111 output voltage of amplifier Variation, 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 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 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 intersect with the extended line of the extending direction extended line of the first electrode 22 or the opposite direction of extending direction it is first fixed Position detecting electrode 201 and the second detection and localization electrode 202, the data drive circuit 220 that is connect with the first electrode 22 and institute State the connection of second electrode 24 scan drive circuit 230 and with the first electrode 22, the first detection and localization electrode 201 and the The touch detection circuit 210 of two detection and localization electrodes 202 connection.The first direction and second direction be vertical or out of plumb phase It hands over.The touch detection circuit 210 is used for when the touch display panel is in touch detection mode to the first electrode 22, the first detection and localization electrode 201, the second detection and localization electrode 202 capacitance variations detected, thus localized external object The touch location of (such as: finger).The data drive circuit 220, for providing electric current to the first electrode 22.It is described to sweep It retouches driving circuit 230 and connects the second electrode 24, drive the second electrode 24 for progressively scanning, so that corresponding scanning Second electrode 24 is grounded, to there is electric current process between the second electrode 24 and first electrode 22 of corresponding scanning, and other not by The second electrode 24 of scanning then disconnects ground connection and is not turned between first electrode 22.The luminescent layer may include corresponding transmitting The light-emitting component of the colors such as RGB, the light-emitting component can electroluminescent when electric current flows through.It is above-mentioned line by line by repetition Scanning is shown line by line, and after the completion of all second electrodes 24 are scanned, the touch display panel is completed a frame image and shown, The touch display panel enters touch detection mode from display drive mode.The touch detection circuit 210 is to described first The self-capacitance variation of electrode 22 and the first detection and localization electrode 201, the second detection and localization electrode 202 is detected, and is positioned outer The touch location of portion's object (such as: finger), the positioning include confirming touch location the prolonging in the first electrode 22 Stretch coordinate on direction and perpendicular to the coordinate on the extending direction of the first electrode 22.To the first electrode 22 and first After detection and localization electrode 201, the second detection and localization electrode 202 complete touch detection, the touch display panel terminates to touch inspection Survey mode continues next frame image and shows into display drive mode.In fact, the first electrode 22 is in touch detection As touch detection electrode, when showing driving as display 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, what multiple first directions extended First electrode 32, the second electrode 34 of multiple second directions extension overlapped with the first electrode, setting are in first electricity Luminescent layer (not shown) between pole 32 and second electrode 34, setting 34 two sides of second electrode and with the second electrode First positioning of 34 extended line (including the extended line along 34 extending direction of second electrode or the opposite direction of extending direction) intersection Detecting electrode 301 and the second detection and localization electrode 302, the data drive circuit 320 being connect with the first electrode 32, with it is described Second electrode 34 connect scan drive circuit 330 and with the second electrode 34, the first detection and localization electrode 301 and second The touch detection circuit 310 that detection and localization electrode 302 connects.The first direction and second direction overlap mutually.The first party To can be mutually perpendicular to second direction or mutual out of plumb.The touch detection circuit 310 is used to show in the touch To the second electrode 34, the first detection and localization electrode 301, the second detection and localization electrode when panel is in touch detection mode 302 self-capacitance variation is detected, the touch location of (such as: finger) thus localized external object.The data-driven electricity Road 320, for providing electric current to the first electrode 32.The scan drive circuit 330 connects the second electrode 34, is used for Progressive scan drives the second electrode 34, so that the second electrode 34 of corresponding scanning is grounded, thus the second electricity of corresponding scanning Have electric current process between pole 34 and first electrode 32, and other not scanned second electrodes 34 then disconnect ground connection and with the first electricity It is not turned between pole 32.The luminescent layer may include the luminescence unit of the colors such as corresponding transmitting red, green, blue, the luminous list Member can electroluminescent when electric current flows through.By repeating above-mentioned progressive scan, showing line by line, when all second electrodes 34 are swept After the completion of retouching, the touch display panel is completed a frame image and is shown, the touch display panel enters from display drive mode Touch detection mode.The touch detection circuit 310 is fixed to the second electrode 34 and the first detection and localization electrode 301, second The self-capacitance variation of position detecting electrode 302 is detected, and the touch location of localized external object (such as: finger), described fixed Position includes the coordinate confirmed the touch location on the extending direction of the second electrode 34 and perpendicular to the second electrode Coordinate on 34 extending direction.To the second electrode 34 and the first detection and localization electrode 301, the second detection and localization electrode After 302 complete touch detection, the touch display panel terminates touch detection mode, into display drive mode, continues next Frame image is shown.In fact, the second electrode 34 in touch detection as touch detection electrode, the conduct when showing driving Show 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 The first electrode 42 that extends in a first direction, multiple extending in a second direction and the second electricity for being overlapped with the first electrode 42 Pole 44, the first detection and localization electrode that 42 two sides of first electrode are set and are intersected with 42 extended line of first electrode 401 and the second detection and localization electrode 402, connect with the first electrode 42 data drive circuit 420, with the second electrode 44 connection scan drive circuits 430 and with the first electrode 42, the first detection and localization electrode 401 and the second detection and localization The touch detection circuit 410 that electrode 402 connects.The first direction and second direction be vertical or out of plumb intersection.The touching Detection circuit 410 is touched for fixed to the first electrode 42, first when the touch display panel is in touch detection mode Position detecting electrode 401, the second detection and localization electrode 402 capacitance variations detected, thus localized external object (such as: hand Refer to) touch location.The data drive circuit 420 is used to provide electric current to the first electrode 22.The turntable driving electricity Road 430 connects the second electrode 44, drives the second electrode 44 for progressively scanning, so that the second electrode of corresponding scanning 44 ground connection, to there is electric current process between the second electrode 44 and first electrode 42 of corresponding scanning, and other not scanned the Two electrodes 44 then disconnect ground connection and are not turned between first electrode 42.By repeating above-mentioned progressive scan, showing line by line, when After the completion of all second electrodes 44 are scanned, the touch display panel completes the scanning of a frame image, the touch display surface Plate enters touch detection mode from display drive mode.The touch detection circuit 410 is fixed to the first electrode 42 and first The self-capacitance variation of position detecting electrode 401, the second detection and localization electrode 402 is detected, and localized external object (such as: hand Refer to) touch location, the positioning includes the coordinate for confirming the touch location on the extending direction of the first electrode 42 With the coordinate on the extending direction perpendicular to the first electrode 42.To the first electrode 22 and the first detection and localization electrode 401, after the second detection and localization electrode 402 completes touch detection, the touch display panel terminates touch detection mode, into aobvious Show drive mode, continues next frame image and show.In fact, the first electrode 42 is in touch detection as touch detection electricity Pole, 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.

The present invention also provides a kind of touch detection circuit, the touch detection circuit is multiple with certain extension for detecting The first electrode in direction and the detection and localization electricity that the first electrode two sides are set and are intersected with the first electrode extended line The self-capacitance of pole, the touch detection circuit judge touch location with the by detecting the self-capacitance size of the first electrode Coordinate on the direction of the extending direction intersection of one electrode, the self-capacitance size judgement by detecting detection and localization electrode touch position Set the coordinate on the extending direction of first electrode.The touch detection circuit includes amplification module, analog-digital converter and processing Device, the amplification module receive the charge variation of the self-capacitance of the first electrode and detection and localization electrode and export corresponding amplification Touch detection voltage to the analog-digital converter, the analog-digital converter exports number according to the touch detection voltage signal of simulation For word signal to processor, the processor obtains the result of touch detection after carrying out signal processing.

The self-capacitance of the first electrode and detection and localization electrode is touch detection capacitor, and the amplification module includes first Switch, second switch, resistance, third switch, amplification capacitor and amplifier, a high level voltage are connected by the first switch One end of the touch detection capacitor is connect, the touch detection capacitor other end is grounded, described in the touch detection capacitance connection One end of first switch also passes through the second switch, resistance is connected to the electrode input end of amplifier, the amplifier it is defeated Electrode input end of the outlet by amplification capacitance connection to the amplifier, the negative input ground connection of the amplifier are described Third switch and the amplification capacitor both ends are simultaneously connected between the output end and electrode input end of the amplifier.

The touch detection circuit includes amplification module, analog-digital converter, processor, multiplexer, control unit, fills Electric module, first switch and the second switch, the multiplexer include can be used in the first input that signal outputs and inputs/ Output end and the second input/output terminal.The multiple first electrode connects the multiplexer with two detection and localization electrodes The first input/output terminal, the charging module connects a conduction terminal of the first switch, the first switch it is another Conduction terminal connects the second input/output terminal of the multiplexer, and the second input/output terminal of the multiplexer is into one Step is connected to the amplification module by two conduction terminals of second switch, and the amplification module connects the analog-digital converter, The analog-digital converter connects the processor, and described control unit is connected respectively to the control of the first switch and the second switch End processed.

Described control unit is capable of providing square-wave pulse or string wave pulse signal to be used to control the first switch and the Two switch conductions or shutdown and the first switch and the second switch will not be simultaneously turned on or be turned off, pass through the multiplexer The first electrode and two detection and localization electrodes are divided into multiple sense channels, each sense channel includes multiple first electrodes And/or first detection and localization electrode and the second detection and localization electrode, each sense channel correspond to a different amplification module.

The present invention is above-mentioned or changes in embodiment, and the touch detection circuit can be set in the touch display panel In, as a part of the touch display panel, also can be set outside the touch display panel.

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 or touch detection circuit.The electronic equipment can be mobile phone, tablet computer, laptop, e-book, Electronic watch, augmented reality/virtual reality device, human action detection device, autonomous driving vehicle, smart home device, peace Anti- equipment, intelligent robot etc. realize the device or equipment of human-computer interaction by touching.

Compared to the prior art, touch-control display panel of the present invention includes 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 size of the mutual capacitance between size or the first, second detection and localization electrode and first electrode to determine touch location Two-dimensional coordinate direction.Inventive touch detection circuit can be used in above-mentioned touch display panel, and electronic equipment of the present invention includes Above-mentioned touch display panel, therefore inventive touch display panel, touch detection circuit and electronic equipment have preferable use Family 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

1. a kind of touch display panel, which is characterized in that including multiple first electrodes extended in a first direction, multiple along second Second electrode that is that direction extends and overlapping mutually with the first electrode, is arranged in the first electrode two sides and and first electrode Two detection and localization electrodes of extended line intersection, the first electrode and second electrode can be used in display and drive, and described first Electrode and two detection and localization electrodes can be used in touch detection, and the first electrode can be used in detecting touch location with the Coordinate on the direction of one direction intersection, described two detection and localization electrodes can be used in detecting touch location in the first party Upward coordinate.

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 being used to detect the electricity certainly of the first electrode in the touch detection stage Hold and the self-capacitance of the self-capacitance of two detection and localization electrodes or the detection first electrode and detects first electrode and two The touch detection circuit of the interelectrode mutual capacitance of detection and localization, the scanning for being used to progressively scan the second electrode in the display stage Driving circuit and the data drive circuit of electric current is provided 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 described two detection and localization electrodes and the first electrode are arranged in same layer, or The described two detection and localization electrodes of person and the second electrode are arranged to be arranged in same layer or described two detection and localization electrodes On the first electrode independent one layer.

4. touch display panel according to claim 1, which is characterized in that the touch display panel further includes touching inspection Slowdown monitoring circuit, the touch detection circuit are used to detect the second electrode and two detection and localization electrodes in the touch detection stage Self-capacitance, or the mutual electricity of self-capacitance and the second electrode and two detection and localization electrodes for detecting the second electrode Hold, it and is institute that the display panel, which further includes being used to progressively scan the scan drive circuit of the second electrode in the display stage, It states first electrode and the data drive circuit of electric current is provided.

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 passes through described in detection The self-capacitance size of first electrode judges coordinate of the touch location on the direction that the extending direction with first electrode intersects, and passes through The mutual capacitance size judgement for detecting the self-capacitance size or detection detection and localization electrode and first electrode of detection and localization electrode touches Coordinate of the position on the extending direction of first electrode.

7. 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 electricity of the self-capacitance of the first electrode and detection and localization electrode Lotus changes and exports the touch detection voltage of corresponding amplification to the analog-digital converter, and the analog-digital converter is according to the touching of simulation Detectable voltage signals output digit signals are touched to processor, the processor obtains the knot of touch detection after carrying out signal processing Fruit.

8. a kind of touch detection circuit, which is characterized in that the touch detection circuit is used for any institute of the claims 1~7 The touch display panel stated, the touch detection circuit can be used in detecting the first electrode and be arranged in the first electrode Two sides and with the first electrode in their extension direction or the extended line of the opposite direction of extending direction intersect detection and localization electricity Mutual capacitance between the self-capacitance of pole or the detection and localization electrode and first electrode is to obtain the touch display panel Touch location.

9. a kind of display device, which is characterized in that including the touch display panel as described in claim 1~7 is any.

10. display device according to claim 9, which is characterized in that further include the touching for the touch display unit Touch detection circuit.

11. a kind of electronic equipment, which is characterized in that including the touch display panel or right as described in claim 1~8 is any It is required that 9~10 any display devices, the electronic equipment is mobile phone, tablet computer, laptop, e-book, electricity Sub- wrist-watch, augmented reality/virtual reality device, human action detection device, autonomous driving vehicle, smart home device, security protection Equipment, one of intelligent robot.