CN104991683A - OLED (organic light emitting dioxide) touch display panel and control method therefor and display device - Google Patents
OLED (organic light emitting dioxide) touch display panel and control method therefor and display device Download PDFInfo
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- CN104991683A CN104991683A CN201510435674.9A CN201510435674A CN104991683A CN 104991683 A CN104991683 A CN 104991683A CN 201510435674 A CN201510435674 A CN 201510435674A CN 104991683 A CN104991683 A CN 104991683A
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Abstract
An embodiment of the present invention provides an OLED (organic light emitting dioxide) touch display panel and a control method therefor and a display device, relates to the field of touch display, and aims at solving the problem that an existing OLED display device is relatively low in light transmittance and relatively great in thickness. The OLED touch display panel comprises an anode, a cathode and a functional layer between the anode and the cathode, and further comprises a touch sensing electrode arranged on a cathode hetero-layer, wherein in a touch stage, the cathode is multiplexed as a touch driving electrode, which is used for touch display.
Description
Technical field
The present invention relates to touch-control display field, particularly relate to a kind of OLED touch-control display panel and control method, display device.
Background technology
OLED is along with the progress rapidly of display technique, and the semiconductor component technology as display device core also obtains tremendous progress thereupon.For existing display device, Organic Light Emitting Diode (Organic Light Emitting Diode, OLED) as a kind of current mode luminescent device, because of its autoluminescence had, fast response, wide viewing angle with the first-class feature of flexible substrate can be produced on and be applied to more and more in the middle of high-performance display field.
Along with the development of portable electronic display device, touch display unit provides a kind of new man-machine interaction interface, and it is more direct, more humane in use.Current OLED touch control display apparatus usually adopts OLED display screen and touch-screen to separate and does, and then the two is combined.This OLED touch control display apparatus can comprise oled substrate, OLED cover plate, touch screen base plate and touch-screen cover plate usually.But there is the shortcomings such as light transmission rate is lower, display device is thicker in this technology.
Summary of the invention
Embodiments of the invention provide a kind of OLED touch-control display panel and control method, display device, can solve the problem that existing OLED display light transmission rate is lower, thickness is thicker.
For achieving the above object, embodiments of the invention adopt following technical scheme:
The one side of the embodiment of the present invention, provides a kind of OLED touch-control display panel, comprises anode, negative electrode and the functional layer between described anode and described negative electrode, also comprises the touch-control sensing electrode arranged with the different layer of described negative electrode; Wherein in the touch-control stage, described negative electrode is multiplexing makes touch-control drive electrode.
Preferably, described negative electrode is the strip shaped electric poles that multiple first direction is arranged, and described touch-control sensing electrode is the strip shaped electric poles that multiple second direction is arranged, and described first direction and described second direction intersect.
Preferably, described negative electrode is multiple block type electrodes of the arrangement in matrix form; Described touch-control sensing electrode is the strip shaped electric poles that multiple second direction is arranged, and each described strip shaped electric poles is described in adjacent rows between block type electrode; The described block type electrode being positioned at same row along first direction is connected by same first sweep trace.
Described negative electrode is multiple block type electrodes of the arrangement in matrix form; Described touch-control sensing electrode is the strip shaped electric poles that multiple second direction is arranged, and each strip shaped electric poles is described in adjacent rows between block type electrode; The described block type electrode being positioned at same row along first direction connects the first different sweep traces.
Preferably, also comprise and be arranged at the pixel control circuit of described anode away from described negative electrode side, the modulation module that described pixel control circuit comprises display module, touch-control module and is connected with described touch-control module with described display module, the touch scanning signals that described modulation module is used for data-signal and the described touch-control module output exported by described display module superposes; Described negative electrode is connected with described touch-control module with described display module respectively by described first sweep trace; Described touch-control sensing electrode is connected with described touch-control module by the second sweep trace; Described anode is connected with described modulation module with described display module respectively by three scan line.
Preferably, described in adjacent rows, the lead direction of the second sweep trace is contrary.
Preferably, described functional layer comprises and is positioned at the hole injection layer of described anode near described negative electrode side, hole transmission layer, organic luminous layer, electron transfer layer and electron injecting layer successively.
The another aspect of the embodiment of the present invention, provides a kind of display device to comprise any one OLED touch-control display panel as above.
The another aspect of the embodiment of the present invention, providing a kind of method for controlling any one OLED touch-control display panel as above, comprising:
In the display stage, to negative electrode input public voltage signal, anode input data signal; In the touch-control stage, to described negative electrode input touch scanning signals, to described anode input modulating signal; Wherein, described modulation signal is the superposed signal of described data-signal and described touch scanning signals.
Preferably, when described OLED touch-control display panel comprises pixel control circuit, when described pixel control circuit comprises display module, touch-control module and modulation module, described method comprises: in the display stage, described display module inputs described public voltage signal to described negative electrode, and inputs described data-signal to described anode; In the touch-control stage, described touch-control module inputs described touch scanning signals to described negative electrode, and described modulation module inputs described modulation signal to described anode.
The embodiment of the present invention provides a kind of OLED touch-control display panel and control method, display device.Described OLED touch-control display panel comprises anode, negative electrode and the functional layer between anode and negative electrode, also comprises the touch-control sensing electrode that the different layer with negative electrode is arranged.Wherein in the touch-control stage, negative electrode is multiplexing makes touch-control drive electrode.So, can be divided into display stage (Display) and touch-control stage (Touch) time that each frame of this OLED touch-control display panel shows.Load public voltage signal in the display stage to negative electrode, OLED touch-control display panel is shown.Load touch scanning signals in the touch-control stage to negative electrode, make touch-control drive electrode by multiplexing for described negative electrode, to realize gathering position of touch, reach the object of touch-control.Due in the process that described OLED touch-control display panel shows at touch-control, can negative electrode be multiplexing makes touch-control drive electrode, so without the need to touch screen plug-in in OLED display panel.Therefore, for external hanging type touching display screen, its structure is simple, thickness is thin, and transmittance is high.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of a kind of OLED touch-control display panel that Fig. 1 provides for the embodiment of the present invention;
A kind of signal timing diagram for the OLED touch-control display panel shown in control chart 1 that Fig. 2 provides for the embodiment of the present invention;
A kind of touch-control sensing electrode of OLED touch-control display panel that Fig. 3 provides for Fig. 1 and the structural representation of touch-control drive electrode;
The concrete structure schematic diagram of a kind of OLED touch-control display panel that Fig. 4 provides for Fig. 1;
The touch-control sensing electrode of another kind of OLED touch-control display panel that Fig. 5 provides for Fig. 1 and the structural representation of touch-control drive electrode;
The touch-control sensing electrode of another OLED touch-control display panel that Fig. 6 provides for Fig. 1 and the structural representation of touch-control drive electrode;
Fig. 7 is the structural representation of the pixel control circuit in Fig. 4;
Fig. 8 is the control method process flow diagram of the OLED touch-control display panel shown in Fig. 1 or Fig. 4.
Accompanying drawing illustrates:
01-pixel cell; 10-anode; 20-negative electrode; 30-functional layer; 301-hole injection layer; 302-hole transmission layer; 303-organic luminous layer; 304-electron transfer layer; 305-electron injecting layer; 40-protective seam; 41-array base palte; 50-pixel control circuit; 501-display module; 502-touch-control module; 503-modulation module; RX-touch-control sensing electrode; TX-touch-control drive electrode; S1-first sweep trace; The first different sweep trace that S11-S14-is connected from the touch-control drive electrode of same row respectively; S2-second sweep trace; S3-three scan line.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of OLED touch-control display panel, as shown in Figure 1, comprises anode 10, negative electrode 20 and the functional layer between anode 10 and negative electrode 20 30, also comprises the touch-control sensing electrode RX arranged with the different layer of negative electrode 20.Wherein in the touch-control stage, negative electrode 20 multiplexingly can make touch-control drive electrode TX.
It should be noted that, first, different layer arrange negative electrode 20 and touch-control sensing electrode RX between be generally provided with insulation course, mutually disturb to avoid the signal of negative electrode 20 and touch-control sensing electrode RX.
The second, in the touch-control stage, multiplexing for the negative electrode 20 touch-control drive electrode TX that does is referred to, as shown in Figure 2, can be divided into display stage (Display) and touch-control stage (Touch) time that each frame shows.Load public voltage signal VCOM in the display stage to negative electrode, OLED touch-control display panel is shown.At touch-control stage (Touch), load touch scanning signals to negative electrode 20, to make touch-control drive electrode TX by multiplexing for negative electrode 20, thus realize gathering position of touch, reach the object of touch-control.
Three, in order to avoid touch-control sensing electrode RX is exposed in air, can arrange protective seam 40 on the surface of touch-control sensing electrode RX, this protective seam 40 can be the substrate that glass substrate or transparent resin material are formed.In addition, in order to improve the sensitivity of touch-control, the higher material of specific inductive capacity can be selected to form above-mentioned protective seam 40.
The embodiment of the present invention provides a kind of OLED touch-control display panel, comprises anode, negative electrode and the functional layer between anode and negative electrode, also comprises the touch-control sensing electrode that the different layer with negative electrode is arranged.Wherein in the touch-control stage, negative electrode is multiplexing makes touch-control drive electrode.So, can be divided into display stage (Display) and touch-control stage (Touch) time that each frame of this OLED touch-control display panel shows.Load public voltage signal in the display stage to negative electrode, OLED touch-control display panel is shown.Load touch scanning signals in the touch-control stage to negative electrode, make touch-control drive electrode by multiplexing for described negative electrode, to realize gathering position of touch, reach the object of touch-control.Due in the process that described OLED touch-control display panel shows at touch-control, can negative electrode be multiplexing makes touch-control drive electrode, so without the need to touch screen plug-in in OLED display panel.Therefore, for external hanging type touching display screen, its structure is simple, thickness is thin, and transmittance is high.
Detailed illustrating is carried out below by way of the concrete structure of specific embodiment to above-mentioned OLED touch-control display panel.
Embodiment one
As shown in Figure 3, above-mentioned negative electrode 20 can be the strip shaped electric poles that multiple first direction Y is arranged, and touch-control sensing electrode RX can be the strip shaped electric poles that multiple second direction X is arranged.So, mutual capacitance is formed between touch-control sensing electrode RX and the multiplexing negative electrode 20 making touch-control drive electrode TX; At touch-control stage (Touch), when touch-control drive singal is loaded to touch-control drive electrode TX, detect the induced voltage signal that touch-control sensing electrode RX is coupled out by mutual capacitance, in the process, when having this touch screen of human contact, human body electric field will act in mutual capacitance, the capacitance of mutual capacitance is changed, thus change the induced voltage signal that touch-control sensing electrode RX is coupled out by mutual capacitance, and then according to the change of this induced voltage signal, determine contact position.
It should be noted that, first, above-mentioned first direction Y and second party X is two cross one another directions, the present invention does not this time limit, as long as above-mentioned both direction can illustrate that the negative electrode 20 of strip is arranged in a crossed manner with the touch-control sensing electrode RX of strip.But preferred, first direction Y can vertically be arranged with second direction X.Such as, array base palte 41 as shown in Figure 3 is generally provided with grid line Gate and data line Data that transverse and longitudinal intersects.So when first direction Y is parallel with the bearing of trend of data line Data, above-mentioned second direction X can refer to and the direction that the bearing of trend of grid line Gate parallels.Or when first direction Y is parallel with the bearing of trend of grid line Gate, above-mentioned second direction X can refer to and the direction that the bearing of trend of data line Data parallels.
The second, as shown in Figure 1, anode 10 is block, and the grid line Gate that above-mentioned transverse and longitudinal is intersected and data line Data as shown in Figure 3, can define the pixel cell 01 of multiple arrangement in matrix form, is provided with a block anode 10 in each pixel cell 01.Because the size of pixel cell 01 is pointed less relatively, in the process of touch-control, finger may simultaneously touch-control to multiple pixel cell 01, so regardless of the shape of negative electrode 20 and touch-control sensing electrode RX, it all can cover multiple pixel cell 01.
Three, " multiple " in the multiple strip shaped electric poles in the present invention refer generally at least two.
In addition, as shown in Figure 4, functional layer 30 can comprise and is positioned at the hole injection layer 301 of anode 10 near described negative electrode 20 side, hole transmission layer 302, organic luminous layer 303, electron transfer layer 304 and electron injecting layer 305 successively.
But in the present embodiment, between the strip touch-control sensing electrode RX intersected due to transverse and longitudinal and strip negative electrode 20 (or touch-control drive electrode TX), have overlapping part.So can produce mutual capacitance between touch-control sensing electrode RX and negative electrode 20, thus interference is caused to touching signals.In order to avoid the problems referred to above, the invention provides following examples.
Embodiment two
In the present embodiment, the concrete structure of functional layer 30 is identical with embodiment one, the shape of touch-control sensing electrode RX also just as, repeat no more herein.Difference is that the shape of negative electrode 20 is different.
Concrete, as shown in Figure 5, negative electrode 20 is multiple block type electrodes of the arrangement in matrix form.
Touch-control sensing electrode RX is the strip shaped electric poles that multiple second direction X is arranged, and each strip shaped electric poles is between adjacent rows block type electrode.
By above-mentioned set-up mode, when negative electrode 20 is multiplexing make touch-control drive electrode TX time, overlapping part is not had between the touch-control drive electrode TX of touch-control sensing electrode RX and bulk, thus the interference that the mutual capacitance avoiding generation between touch-control sensing electrode RX and negative electrode 20 causes touching signals.
In addition, the block type electrode that can be positioned at same row along first direction Y is connected by same first sweep trace S1, thus in the touch-control stage, can input touch scanning signals by column to touch-control drive electrode TX.All can be connected with same first sweep trace S1 to make the block type electrode of same row, the position of the touch-control drive electrode TX of each bulk corresponding can make via hole (figure is positioned at the stain on block touch-control drive electrode TX) at the insulation course being arranged in touch-control drive electrode TX surface, then by plain conductor, the block type electrode of same row is electrically connected.
Because touch-control sensing electrode RX is strip shaped electric poles, therefore directly can make the second sweep trace S2 at the edge of touch-control sensing electrode RX, for touch-control sensing electrode RX input control signal.But because the touch-control drive electrode TX corresponding position of each bulk is provided with via hole, so, the display effect of the position of the position being provided with the touch-control drive electrode TX of via hole and the touch-control sensing electrode RX not arranging via hole can difference to some extent.Therefore, in order to make the display effect of whole display panel even, can multiple uniform via hole (being positioned at the stain on the touch-control sensing electrode RX of strip in figure) be set in touch-control sensing electrode RX corresponding position, all via holes whole display panel is arranged in touch control electrode (comprising touch-control sensing electrode RX and touch-control drive electrode TX) are evenly distributed.
Embodiment three
In the present embodiment, structure, the touch-control sensing electrode RX of functional layer 30 are identical with embodiment two with the shape of negative electrode 20, repeat no more herein.Difference is, the connected mode of negative electrode 20 is different.
Concrete, negative electrode 20 is multiple block type electrodes of the arrangement in matrix form.
Touch-control sensing electrode RX is the strip shaped electric poles that multiple second direction X is arranged, and each strip shaped electric poles is between adjacent rows block type electrode;
The block type electrode being positioned at same row along first direction Y connects different the first sweep traces (S11-S14).
The present embodiment is for embodiment two, and due to the touch-control drive electrode TX of each bulk, by one, independently sweep trace is to its input control signal, and therefore the detection of position of touch is more accurate.But wiring space is comparatively large, and structure is more complicated.
In order to realize touch-control display, for any one embodiment of above-described embodiment one to embodiment three, this OLED touch-control display panel, can also comprise as shown in Figure 4 and be arranged at the pixel control circuit 50 of anode 10 away from negative electrode 20 side.
Described pixel control circuit 50, the modulation module 503 that can comprise display module 501, touch-control module 502 as shown in Figure 7 and be connected with touch-control module 502 with display module 501, the touch scanning signals TX exported for the data-signal Data that exported by display module 501 and touch-control module 502 superposes.
Negative electrode 20 is connected with touch-control module 502 with display module 501 respectively by the first sweep trace S1.
Touch-control sensing electrode TX is connected with touch-control module 502 by the second sweep trace S2.
Anode 20 is connected with modulation module 502 with display module 501 respectively by three scan line S3.
So, at display stage (Display), display module 501 inputs public voltage signal VCOM by the first sweep trace S1 to negative electrode 20, and by three scan line S1 anode 10 input data signal Data.At touch-control stage (Touch), touch-control module 502 inputs touch scanning signals TX by the first sweep trace S1 to negative electrode 20, modulation module 503 is by the superposed signal (Data & TX) of three scan line S3 anode 10 input data line signal Data and touch scanning signals TX, to make in display stage (Display) and touch-control stage (Touch), pressure reduction between anode 10 and negative electrode 20 remains unchanged, thus makes the electric current of the OLED flowing through each pixel cell constant.
In addition, in order in the process making display device, make the frame of display device can left and right symmetry.Preferably, the lead direction of adjacent rows second sweep trace S2 can be contrary.
The embodiment of the present invention provides a kind of display device, comprises any one OLED touch-control display panel above-mentioned, has the structure identical with previous embodiment and beneficial effect.Because previous embodiment is described in detail the structure of OLED touch-control display panel and beneficial effect, repeat no more herein.
It should be noted that, any product or parts with Presentation Function such as such as this OLED touch-control display panel TV, digital album (digital photo frame), mobile phone or panel computer.
The embodiment of the present invention provides a kind of method for controlling any one OLED touch-control display panel above-mentioned, as shown in Figure 8, can comprise:
S101, display the stage (Display), input public voltage signal Vcom to negative electrode 20, anode 10 input data signal Data.
S102, at touch-control stage (Touch), input touch scanning signals TX to negative electrode 20, anode 10 input modulating signal.Thus make in display stage (Display) and touch-control stage (Touch), the pressure reduction between anode 10 and negative electrode 20 remains unchanged, thus makes the electric current of the OLED flowing through each pixel cell constant.
Wherein, modulation signal is the superposed signal of data-signal Data and touch scanning signals TX.
The embodiment of the present invention provides a kind of control method of OLED touch-control display panel, comprising: first in the display stage, to negative electrode input public voltage signal, and anode input data signal.Then, in the touch-control stage, to negative electrode input touch scanning signals, anode input modulating signal.So, load public voltage signal in the display stage to negative electrode, OLED touch-control display panel is shown.Load touch scanning signals in the touch-control stage to negative electrode, make touch-control drive electrode by multiplexing for described negative electrode, to realize gathering position of touch, reach the object of touch-control.Due in the process that described OLED touch-control display panel shows at touch-control, can negative electrode be multiplexing makes touch-control drive electrode, so without the need to touch screen plug-in in OLED display panel.Therefore, for external hanging type touching display screen, its structure is simple, thickness is thin, and transmittance is high.
On this basis, when OLED touch-control display panel, comprise pixel control circuit 50 as shown in Figure 4, when this pixel control circuit 50 can comprise display module 501, touch-control module 502 and modulation module 503 as shown in Figure 7, above-mentioned control method comprises:
First, at display stage (Display), display module 501 inputs public voltage signal Vcom to negative electrode 20, and anode 10 input data signal Data.
Then, at touch-control stage (Touch), touch-control module 502 inputs touch scanning signals TX to negative electrode 20, modulation module 503 anode 10 input modulating signal (Data & TX).
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (10)
1. an OLED touch-control display panel, comprises anode, negative electrode and the functional layer between described anode and described negative electrode, it is characterized in that, also comprises the touch-control sensing electrode arranged with the different layer of described negative electrode;
Wherein in the touch-control stage, described negative electrode is multiplexing makes touch-control drive electrode.
2. OLED touch-control display panel according to claim 1, it is characterized in that, described negative electrode is the strip shaped electric poles that multiple first direction is arranged, and described touch-control sensing electrode is the strip shaped electric poles that multiple second direction is arranged, and described first direction and described second direction intersect.
3. OLED touch-control display panel according to claim 1, is characterized in that, described negative electrode is multiple block type electrodes of the arrangement in matrix form;
Described touch-control sensing electrode is the strip shaped electric poles that multiple second direction is arranged, and each described strip shaped electric poles is described in adjacent rows between block type electrode;
The described block type electrode being positioned at same row along first direction is connected by same first sweep trace.
4. OLED touch-control display panel according to claim 1, is characterized in that, described negative electrode is multiple block type electrodes of the arrangement in matrix form;
Described touch-control sensing electrode is the strip shaped electric poles that multiple second direction is arranged, and each strip shaped electric poles is described in adjacent rows between block type electrode;
The described block type electrode being positioned at same row along first direction connects the first different sweep traces.
5. the OLED touch-control display panel according to claim 3 or 4, it is characterized in that, also comprise and be arranged at the pixel control circuit of described anode away from described negative electrode side, the modulation module that described pixel control circuit comprises display module, touch-control module and is connected with described touch-control module with described display module, the touch scanning signals that described modulation module is used for data-signal and the described touch-control module output exported by described display module superposes;
Described negative electrode is connected with described touch-control module with described display module respectively by described first sweep trace;
Described touch-control sensing electrode is connected with described touch-control module by the second sweep trace;
Described anode is connected with described modulation module with described display module respectively by three scan line.
6. OLED touch-control display panel according to claim 5, is characterized in that, described in adjacent rows, the lead direction of the second sweep trace is contrary.
7. OLED touch-control display panel according to claim 1, is characterized in that, described functional layer comprises and is positioned at the hole injection layer of described anode near described negative electrode side, hole transmission layer, organic luminous layer, electron transfer layer and electron injecting layer successively.
8. a display device, is characterized in that, comprises the OLED touch-control display panel as described in any one of claim 1-7.
9. as a method for any one OLED of claim 1-7 touch-control display panel for controlling, it is characterized in that, comprising:
In the display stage, to negative electrode input public voltage signal, anode input data signal;
In the touch-control stage, to described negative electrode input touch scanning signals, to described anode input modulating signal;
Wherein, described modulation signal is the superposed signal of described data-signal and described touch scanning signals.
10. the control method of OLED touch-control display panel according to claim 9, it is characterized in that, when described OLED touch-control display panel comprises pixel control circuit, when described pixel control circuit comprises display module, touch-control module and modulation module, described method comprises:
In the display stage, described display module inputs described public voltage signal to described negative electrode, and inputs described data-signal to described anode;
In the touch-control stage, described touch-control module inputs described touch scanning signals to described negative electrode, and described modulation module inputs described modulation signal to described anode.
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