CN105718118A - Array substrate, touch display panel, touch pressure detection method and display device - Google Patents
Array substrate, touch display panel, touch pressure detection method and display device Download PDFInfo
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- CN105718118A CN105718118A CN201610263974.8A CN201610263974A CN105718118A CN 105718118 A CN105718118 A CN 105718118A CN 201610263974 A CN201610263974 A CN 201610263974A CN 105718118 A CN105718118 A CN 105718118A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04105—Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
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Abstract
The embodiment of the invention provides an array substrate, a touch display panel, a touch pressure detection method and a display device and relates to the technical field of display. The invention aims to solve the problem of low detection precision when a pressure induction capacitor is used for detecting the touch pressure. The array substrate comprises a plurality of sub pixels and photo-sensors located in the sub pixels; the photo-sensors are respectively connected with a first voltage end and a scanning signal wire and a reading signal wire which are horizontally and vertically crossed; the photo-sensors are started under the control of the scanning signal wire and the first voltage end, so as to detect the touch pressure through photoelectric conversion, and a detection result is output through the reading signal wire.
Description
Technical field
The present invention relates to Display Technique field, particularly relate to a kind of array base palte, touch-control display panel and touch-control pressure detection method, display device.
Background technology
Touch control display apparatus is more and more applied in the Display Technique field of every profession and trade, when user touches the touch screen of touch control display apparatus by finger, touch control display apparatus can the position of touch of finger in perception touch screen plane, and the touch pressure of finger, so that user only can be achieved with man-machine interaction by the pattern on touch touch screen or word.
Touch control display apparatus of the prior art, for instance mobile phone is as it is shown in figure 1, include mobile phone center 11 and be installed on the touch screen 10 on described mobile phone center 11.In order to the touch pressure of finger is detected, above-mentioned mobile phone also includes the first electrode 101 and the second electrode 102 being oppositely arranged, and constitutes pressure sensitive electric capacity between the first electrode 101 and the second electrode 102.In the case, touch in the process of touch screen 10 user, different touch-control pressure so that the space D between the first electrode 101 and the second electrode 102 is different, thus causing that the capacitance of above-mentioned pressure sensitive electric capacity changes.Therefore can pass through the collection to pressure sensitive capacitance variation amount, reach to measure the purpose of touch-control pressure.
Generally above-mentioned first electrode 101 can share with the electrode layer in touch screen 10, and the second electrode 102 can be arranged on mobile phone center 11.But assemble in the process of touch screen 10 and mobile phone center 11 and can there is location tolerance, the precision of pressure detecting can be impacted by this alignment error.In addition, when finger presses touch screen 10, on this touch screen 10, pressing position place and pressing position periphery all can deform, so that pressing position periphery, namely its pressure sensitive electric capacity of the position not pressed also there occurs change, make the touch-control pressure data collected inaccurate, reduce the precision of touch-control pressure detecting.
Summary of the invention
Embodiments of the invention provide a kind of array base palte, touch-control display panel and touch-control pressure detection method, display device, when solving to adopt pressure sensitive electric capacity that touch-control pressure is detected, and the problem that accuracy of detection is low.
For reaching above-mentioned purpose, embodiments of the invention adopt the following technical scheme that
The one side of the embodiment of the present invention, it is provided that a kind of array base palte, including multiple sub-pixs and the light sensitive component being arranged in described sub-pix；Described light sensitive component connects the scan signal line of the first voltage end and transverse and longitudinal intersection respectively and reads holding wire, for under the control of described scan signal line and described first voltage end, open described light sensitive component, touch-control pressure is detected by photoelectric conversion, and testing result is exported by described reading holding wire.
Preferably, described light sensitive component includes light sensitive diode, switch transistors pipe and storage electric capacity；The grid of described switch transistors pipe connects described scan signal line, and the first pole connects the anode of described light sensitive diode, and the second pole is connected with described reading holding wire；The negative electrode of described light sensitive diode connects described first voltage end；One end of described electric capacity is connected with the anode of described light sensitive diode, and the other end connects the negative electrode of described light sensitive diode.
Preferably, at least three is arranged in order and the sub-pix of different colours constitutes a pixel cell, is provided with a described light sensitive component in each pixel cell.
Preferably, when a sub-pix in described pixel cell is blue subpixels, described light sensitive component is arranged in described blue subpixels.
Preferably, the light sensitive component being positioned at same a line connects scan signal line described in same, and the light sensitive component being positioned at same string connects reading holding wire described in same.
The another aspect of the embodiment of the present invention, it is provided that a kind of touch-control display panel, including any one array base palte as above.
Preferably, the touch control component for detecting position of touch is also included.
The another aspect of the embodiment of the present invention, it is provided that touch-control pressure is carried out detection method by a kind of employing any one touch-control display panel as above, including: scan signal line and the first voltage end control light sensitive component and open；Touch-control pressure is detected by described light sensitive component by photoelectric conversion, and testing result is exported by described reading holding wire.
Preferably, touch-control pressure is detected by described light sensitive component by photoelectric conversion, and testing result is included by the output of described reading holding wire: described light sensitive component is to reading holding wire output initial current and storing；Wherein, when described initial current is for contacting and not pressing, the current value of described light sensitive component output；Described light sensitive component is to reading holding wire output current flow and storing；Wherein, described current flow is after pressing, the current value of described light sensitive component output；Described initial current and described current flow are compared and draws current variation value, and show that current finger is by pressure according to described current variation value；By described current finger by pressure compared with dynamics grade threshold, to determine that finger is by pressure rating.
Preferably, when each pixel cell is provided with a described light sensitive component, and the light sensitive component being positioned at same a line connects scan signal line described in same, when being positioned at reading holding wire described in the light sensitive component connection same of same string, described light sensitive component exports to reading holding wire before current flow storage, described method also includes: at least two line scan signals lines constitute scanning signal group, described scanning signal group is opened one by one, so that the light sensitive component being connected with the scan signal line in described scanning signal group is opened simultaneously, and determine position of touch according to the first position reading holding wire and described scanning signal group；Wherein, the current flow of described first reading holding wire output is different from initial current；Described initial current and described current flow are compared and draws current variation value, and show that current finger is by pressure according to described current variation value, by described current finger by pressure compared with dynamics grade threshold, to determine that finger is by pressure rating, including: the current flow of each touch position is compared with initial current and draws current variation value, and show that the current finger of each touch position finger described is by pressure according to described current variation value；By the current finger of each touch position described by pressure compared with described dynamics grade threshold, to determine that the finger of each position of touch described is by pressure rating.
Preferably, when described touch-control display panel includes touch control component, described light sensitive component exports before current flow storage to reading holding wire, and described method also includes: by described touch control component, position of touch is detected；Described initial current and described current flow are compared and draws current variation value, and show that current finger is by pressure according to described current variation value, by described current finger by pressure compared with dynamics grade threshold, to determine that finger is by pressure rating, including: the scan signal line of described touch position is opened simultaneously, so that the light sensitive component of described touch position is opened simultaneously；The current flow of each touch position is compared with initial current and draws current variation value, and show that the current finger of each touch position finger described is by pressure according to described current variation value；By the current finger of each touch position described by pressure compared with described dynamics grade threshold, to determine that the finger of each position of touch described is by pressure rating.
The another further aspect of the embodiment of the present invention, it is provided that a kind of display device includes any one touch-control display panel as above, also includes the scanner driver being connected with described scan signal line and the signal processor being connected with described reading holding wire.
The embodiment of the present invention provides a kind of array base palte, touch-control display panel and touch-control pressure detection method, display device.This array base palte includes multiple sub-pix and is arranged in the light sensitive component of sub-pix.Light sensitive component connects the scan signal line of the first voltage end and transverse and longitudinal intersection respectively and reads holding wire, for under the control of scan signal line and the first voltage end, open light sensitive component, touch-control pressure to be detected by photoelectric conversion, and by testing result by reading holding wire output.
So, under the first voltage end and scan signal line control, above-mentioned light sensitive component can be opened, during the touch-control pressure difference of user's finger in the process of touch-control, finger valley line covering position place is incident to the light amount difference that light sensitive component detects, and this light sensitive component can carry out photoelectric conversion according to the light amount detected, and from reading the current signal that holding wire output matches with above-mentioned light amount, thus being drawn corresponding touch-control pressure by this current signal.Owing to the detection of above-mentioned touch-control pressure is realized by light sensitive component, such that it is able to when avoiding adopting existing pressure sensitive electric capacity that touch-control pressure is detected, the problem that accuracy of detection is low.And then improve the accuracy of detection of touch-control pressure.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described 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 premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The structural representation of a kind of touch control display apparatus that Fig. 1 provides for prior art；
The structural representation of a kind of array base palte that Fig. 2 a provides for the embodiment of the present invention；
The structural representation of a kind of fingerprint pressing that Fig. 2 b provides for the embodiment of the present invention；
Fig. 3 is the structural representation of the light sensitive component in Fig. 2 a；
The structural representation of the another kind of array base palte that Fig. 4 provides for the embodiment of the present invention；
When Fig. 5 a is the touch-control display panel that finger has the array base palte shown in Fig. 4, fingerprint schematic diagram corresponding to the position of pixel cell；
Fig. 5 b is finger contact and when not pressing the touch-control display panel with the array base palte shown in Fig. 4, the current signal schematic diagram that light sensitive component collects；
When Fig. 5 c is the touch-control display panel that finger pressing has the array base palte shown in Fig. 4, the current signal schematic diagram that light sensitive component collects；
The structural representation of a kind of touch control component that Fig. 6 a provides for the embodiment of the present invention；
The structural representation of the another kind of touch control component that Fig. 6 b provides for the embodiment of the present invention；
The structural representation of a kind of display device that Fig. 7 provides for the embodiment of the present invention；
A kind of touch-control pressure detection method flow chart that Fig. 8 provides for the embodiment of the present invention；
The sequential chart of control signal in a kind of touch-control pressure detecting process that Fig. 9 provides for the embodiment of the present invention.
Accompanying drawing labelling:
01-touch-control display panel；10-touch screen；11-mobile phone center；101-the first electrode；102-the second electrode；Spacing between D-the first electrode and the second electrode；20-sub-pix；21-pixel cell；30-light sensitive component；31-scanner driver；32-signal processor；33-touch control component；S1, S2 ... Sn-scan signal line；DL1, DL2 ... DLm-reads holding wire；Vd-the first voltage end；Gap between H-valley line and touch-control display panel；T-switch transistors pipe；C-stores electric capacity；L-light sensitive diode；RX-touch-control sensing electrode；TX-touch-control drive electrode.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
The embodiment of the present invention provides a kind of array base palte, includes multiple sub-pix 20 as shown in Figure 2 a and is arranged in the light sensitive component 30 of sub-pix 20.
Wherein, light sensitive component 30 connects the scan signal line (S1, S2 ... Sn) of the first voltage end Vd and transverse and longitudinal intersection respectively and reads holding wire (DL1, DL2 ... DLm), for scan signal line (S1, S2 ... or Sn) and the control of the first voltage end Vd under, open light sensitive component 30, touch-control pressure is detected by photoelectric conversion, and by testing result by read holding wire (DL1, DL2 ... or DLn) output.
It should be noted that above-mentioned n and m is the positive integer more than or equal to 1.Additionally, above-mentioned first voltage end Vd can be earth terminal.
Due to user's finger as shown in Figure 2 b on there is rough crestal line and valley line, when user touches the touch-control display panel 01 being made up of above-mentioned array base palte, crestal line contacts with touch-control display panel 01, and has gap H between valley line and touch-control display panel 01.Therefore, when above-mentioned light sensitive component 30 is opened, when user's touch-control when changing by surging, between valley line and touch-control display panel 01, gap H also can change, thus changing finger covering position place to be incident to the light amount of light sensitive component 30.In the case, the current signal that the reading holding wire (DL1, DL2 ... DLm) being connected with this light sensitive component 30 exports also can change, such that it is able to conversed and this variable quantity △ I touch-control pressure matched by the variable quantity △ I of current signal, and then reach the purpose that touch-control pressure is detected.
In sum, under the first voltage end and scan signal line control, above-mentioned light sensitive component can be opened, during the touch-control pressure difference of user's finger in the process of touch-control, finger valley line covering position place is incident to the light amount difference that light sensitive component detects, and this light sensitive component can carry out photoelectric conversion according to the light amount detected, and from reading the current signal that holding wire output matches with above-mentioned light amount, thus being drawn corresponding touch-control pressure by this current signal.Owing to the detection of above-mentioned touch-control pressure is realized by light sensitive component, such that it is able to when avoiding adopting existing pressure sensitive electric capacity that touch-control pressure is detected, the problem that accuracy of detection is low.And then improve the accuracy of detection of touch-control pressure.
Further, above-mentioned light sensitive component 30 is as shown in Figure 3, it is possible to include light sensitive diode L, switch transistors pipe T and storage electric capacity C.
Wherein, the grid of switch transistors pipe T connects scan signal line Sn, and the first pole connects the anode of light sensitive diode L, and the second pole is connected with reading holding wire DLm.The negative electrode of light sensitive diode L connects the first voltage end Vd.One end of electric capacity C is connected with the anode of light sensitive diode L, and the other end connects the negative electrode of light sensitive diode L.
In the case, when switch transistors pipe T is turned on by said scanning signals line Sn input scanning signal, user is in the process of touch-control, light sensitive diode L can convert the amount of incident of finger valley line covering position place light to current signal, and by above-mentioned switch transistors pipe T output to reading holding wire DLm, thus learn the touch-control pressure of finger according to this reading holding wire DLm signal of telecommunication read.Above-mentioned storage electric capacity C can so that light sensitive diode L can by output stable for above-said current signal to reading holding wire DLm.
It should be noted that above-mentioned switch transistors pipe T can be N-type transistor, it is also possible to for P-type transistor.The first of this switch transistors pipe T can be extremely source electrode, and second can be extremely drain electrode, or first extremely drain, the second extremely source electrode.This is not limited by the present invention.
Additionally, above-mentioned light sensitive component 30 can also include multiple transistor in parallel with switch transistors pipe T and multiple electric capacity in parallel with storage electric capacity C.
On this basis, so that when user's finger presses the optional position of viewing area in the touch-control display panel 01 being made up of above-mentioned array base palte, touch-control pressure can be tested.Preferably, as shown in Figure 2 a, at least three is arranged in order and the sub-pix 20 of different colours constitutes a pixel cell 21, is provided with a light sensitive component 30 in each pixel cell 21.
It should be noted that the color constituting at least three sub-pix 20 of above-mentioned pixel cell 21 can respectively red (R), blue (B) and green (G), or can also be cyan, magenta and yellow.This is not limited by the present invention.
When constitute the color of at least three sub-pix 20 of above-mentioned pixel cell 21 can respectively red (R), blue (B) and green (G), owing to when changing the aperture opening ratio of blue (B) sub-pix, human eye is not easily discovered.It is therefore preferred that when the sub-pix 20 in pixel cell 21 is blue (B) sub-pix, as shown in Figure 4, light sensitive component 30 can be arranged in blueness (B) sub-pix.So, even if causing the aperture opening ratio of blueness (B) sub-pix to reduce because being provided with photo-sensitive cell 30 in blue subpixels, owing to human eye is not easy to discover, therefore that the impact of display effect is less.
Further, in order to save the wiring space on array base palte, as shown in Figure 4, be positioned at the light sensitive component 30 of same a line connect same scan signal line (S1, S2 ... or Sn), be positioned at the light sensitive component 30 of same string connect same read holding wire (DL1, DL2 ... or DLm).In the case, owing to usually pressing multiple pixel cell 21 when finger presses, therefore can open fine scanning holding wire, so that the light sensitive component 30 at pressing position place is all at duty simultaneously.
When below each pixel cell 21 being provided with a light sensitive component 30, the test process of finger touch pressure is described in detail.
Concrete, as shown in Figure 5 a, owing to the crestal line on finger and valley line are arranged alternately, therefore when a pixel cell 21 is covered by valley line, the pixel cell 21 adjacent with this pixel cell 21 is covered the multiple pixel cells 21 covered by crestal line.
In the case, when finger contacts and does not press the touch-control display panel 01 being made up of above-mentioned array base palte, as shown in Figure 2 a owing to crestal line contacts with touch-control display panel 01, and there is between valley line and touch-control display panel 01 gap H, therefore the light sensitive component 30 that can be considered as in the pixel cell 21 of crestal line covering position does not receive light, so this light sensitive component 30 is to reading holding wire (DL1, DL2, DL3 or DL4) electric current that exports can represent with 0 as shown in Figure 5 b, and the light received is converted into corresponding current signal by the light sensitive component 30 in the pixel cell 21 of valley line covering position, adopt 1 expression, output is to reading holding wire (DL1, DL2, DL3 or DL4).
Now, to read holding wire DL1, electric current I=(1 × A/2+0 × A/2)/A=0.5 of this reading holding wire DL1 output.Wherein, A is the number with the reading holding wire DL1 pixel cell 21 being connected that a finger can cover.
Next, when finger presses above-mentioned touch-control display panel 01, owing to crestal line still contacts with touch-control display panel 01, therefore the light sensitive component 30 in the pixel cell 21 of crestal line covering position still exports electric current 0 to reading holding wire (DL1, DL2, DL3 or DL4).And gap H between valley line and touch-control display panel 01 reduces in the process of finger pressing, the light received is reduced by the light sensitive component 30 in the pixel cell 21 of valley line covering position, therefore the light sensitive component 30 in the pixel cell 21 of valley line covering position exports electric current also reduce accordingly to reading holding wire (DL1, DL2, DL3 or DL4), for instance reduce to 0.5.
Now, electric current I=(0.5 × A/2+0 × A/2)/A=0.25 of above-mentioned reading holding wire DL1 output.
As from the foregoing, when pressing surging increase of finger, gap H between above-mentioned valley line and touch-control display panel 01 can reduce, so that the light luminance of the light sensitive component 30 being incident in the pixel cell 21 of valley line covering position reduces, so that the light sensitive component 30 in the pixel cell 21 of valley line covering position exports electric current to reading holding wire (DL1, DL2, DL3 or DL4) and also reduces, therefore can by reading current value the judging by surging finger of holding wire DL1 output.
The embodiment of the present invention provides a kind of touch-control display panel, including any one array base palte as above.There is the structure identical with the array base palte that previous embodiment provides and beneficial effect, owing to structure and the beneficial effect of previous embodiment array substrate are described in detail, repeat no more herein.
Additionally, above-mentioned touch-control display panel also includes the touch control component for detecting position of touch.Concrete, as shown in Figure 6 a, above-mentioned touch control component 33 can include touch-control sensing electrode RX and the touch-control drive electrode TX that transverse and longitudinal is intersected, the touch-control sensing electrode RX and the touch-control drive electrode TX that pass through can form mutual capacitance type touch control capacitance,, in the process of touch-control, position of touch is detected according to the change of electric capacity.Or as shown in Figure 6 b, above-mentioned touch control component 33 includes the touch control electrode of arrangement in matrix form, and this touch control electrode can form self-tolerant touch control capacitance, and by the change of its electric capacity, position of touch is detected.
The embodiment of the present invention provides a kind of display device, as it is shown in fig. 7, comprises any one touch-control display panel 01 as above.Having the identical structure of touch-control display panel and beneficial effect that provide with previous embodiment, due to previous embodiment, structure and beneficial effect to touch-control display panel is described in detail, and repeats no more herein.
Additionally, also include the scanner driver 31 being connected with scan signal line (S1, S2 ... Sn), and the signal processor 32 being connected with reading holding wire (DL1, DL2 ... DLm).Wherein, scanner driver 31 can export scanning signal, to open the light sensitive component 30 being connected with scan signal line (S1, S2 ... Sn), touch-control position of touch is carried out photoelectric conversion, and conversion results is exported to signal processor 32 by reading holding wire (DL1, DL2 ... DLm), so that this signal processor 32 can know the touch-control pressure of above-mentioned position of touch according to conversion results.
The embodiment of the present invention provides a kind of method adopting any one touch-control display panel 01 above-mentioned that touch-control pressure is detected, and includes as shown in Figure 8:
S101, scan signal line (S1, S2 ... Sn) as shown in Figure 2 a and the first voltage end Vd control light sensitive component 30 and open.
Touch-control pressure is detected by S102, light sensitive component 30 by photoelectric conversion, and by testing result by reading holding wire (DL1, DL2 ... DLm) output.
So, under the first voltage end and scan signal line control, above-mentioned light sensitive component can be opened, during the touch-control pressure difference of user's finger in the process of touch-control, finger valley line covering position place is incident to the light amount difference that light sensitive component detects, and this light sensitive component can carry out photoelectric conversion according to the light amount detected, and from reading the current signal that holding wire output matches with above-mentioned light amount, thus being drawn corresponding touch-control pressure by this current signal.Owing to the detection of above-mentioned touch-control pressure is realized by light sensitive component, such that it is able to when avoiding adopting existing pressure sensitive electric capacity that touch-control pressure is detected, the problem that accuracy of detection is low.And then improve the accuracy of detection of touch-control pressure.
Hereinafter, the detection method of touch-control pressure is carried out detailed illustration.
Embodiment one
In the present embodiment when without position of touch is detected, it is possible to by light sensitive component 30, touch-control pressure is detected.
Concrete, above-mentioned steps S102 may include that
First, light sensitive component 30 exports initial current I to reading holding wire (DL1, DL2 ... DLm)1And store.Wherein, above-mentioned initial current I1When contacting for user and do not press touch-control display panel 01, the current value of above-mentioned light sensitive component 30 output.
Concrete, as shown in Figure 5 b, owing to crestal line contacts with touch-control display panel 01, and there is between valley line and touch-control display panel 01 gap H, therefore the light sensitive component 30 that can be considered as in the pixel cell 21 of crestal line covering position does not receive light, so this light sensitive component 30 is to reading the initial current I that holding wire (DL1, DL2, DL3 or DL4) exports1Represent with 0, and the light received is converted into corresponding current signal by the light sensitive component 30 in the pixel cell 21 of valley line covering position, be i.e. the initial current I of valley line correspondence position1Adopt 1 expression.
Now, to read holding wire DL1, the electric current I of this reading holding wire DL1 output1=(1 × A/2+0 × A/2)/A=0.5.
It follows that after user presses touch-control display panel 01, light sensitive component 30 exports current flow I to reading holding wire (DL1, DL2 ... DLm)2And store.Wherein, current flow I2After pressing, the current value of light sensitive component 30 output.
Concrete, owing to crestal line still contacts with touch-control display panel 01 after user's pressing, therefore the light sensitive component 30 in the pixel cell 21 of crestal line covering position still exports electric current 0 to reading holding wire (DL1, DL2, DL3 or DL4), i.e. the current flow I of crestal line correspondence position2It is 0.And gap H between valley line and touch-control display panel 01 reduces in the process of finger pressing, the light received is reduced by the light sensitive component 30 in the pixel cell 21 of valley line covering position, and therefore the light sensitive component 30 in the pixel cell 21 of valley line covering position is to reading the current flow I that holding wire (DL1, DL2, DL3 or DL4) exports2Also reduce accordingly, for instance reduce to 0.5.
Now, the electric current I of above-mentioned reading holding wire DL1 output2=(0.5 × A/2+0 × A/2)/A=0.25.
It follows that to initial current I1With current flow I2Compare and draw current variation value △ I, and show that current finger is by pressure according to current variation value △ I.
Concrete, it is possible to pressing position place is read the initial current I that holding wire (DL1, DL2, DL3 and DL4) exports1With current flow I2It is overlapped respectively, and to the initial current I after superposition1With current flow I2Compare and draw current variation value △ I, and show that the current finger in pressing position place is by pressure according to current variation value △ I.Wherein, above-mentioned current variation value △ I is more big, finger to press surging more big.
Finally, it is possible to by above-mentioned current finger by pressure compared with dynamics grade threshold Fm, to determine that finger is by pressure rating.
So, after the finger of position of touch is determined by pressure rating, it is possible to achieve different fingers presses the order that pressure rating is corresponding different.Such as, when user watches video, could be arranged to the finger adjustment by pressure rating I correspondence volume, finger is by the adjustment of pressure rating II corresponding brightness size, finger is by the adjustment of pressure rating III correspondence fast forward speed, therefore user can apply different from pressure, to realize transferring of the corresponding command.Wherein, finger increases by the size of pressure by finger corresponding for pressure rating III by pressure rating II and finger successively by pressure rating I, finger.
Embodiment two
In the present embodiment, it is possible to by light sensitive component 30, position of touch is detected, and only the touch-control pressure of position of touch is detected.
Concrete, as shown in Figure 4, when each pixel cell 21 is provided with a light sensitive component 30, and the light sensitive component 30 being positioned at same a line connect same scan signal line (S1, S2 ... or Sn), be positioned at the light sensitive component of same string connect read described in same holding wire (DL1, DL2 ... or DLm) time, export current flow I at light sensitive component 30 to reading holding wire (DL1, DL2 ... DLm)2And before storing, said method also includes:
First, at least two line scan signals lines constitute scanning signal group 40 as shown in Figure 7, wherein the scanning of in Fig. 7 signal group 40 is made up of four line scan signals lines, and this scanning signal group 40 opens as shown in Figure 9 one by one, so that the light sensitive component 30 being connected with the scan signal line in scanning signal group 40 is opened simultaneously, and read holding wire DL according to first as shown in Figure 7fPosition of touch is determined with the position of described scanning signal group 40.
Wherein, above-mentioned first signal DL is readfThe current flow I of line output2With initial current I1Different.Wherein 1≤f≤m, f is positive integer.Such as, as the current flow I reading holding wire DL1 and DL2 output2With initial current I1Time all different, above-mentioned reading holding wire DL1 and DL2 can be above-mentioned first and read signal DLf.At this point it is possible to determine the abscissa of position of touch by scanning signal group 40, read signal DL by firstfDetermine the vertical coordinate of position of touch, and then obtain concrete position of touch.
It follows that to current flow I2With initial current I1Compare and draw current variation value △ I, and show that current finger is by pressure according to current variation value △ I, by current finger by pressure compared with dynamics grade threshold, to determine that finger is by pressure rating, including:
By the current flow I of each touch position2With initial current I1Relatively draw current variation value △ I, and show that the current finger of each touch position finger is by pressure according to current variation value △ I.
Concrete, the scan signal line of each touch position is opened simultaneously so that the light sensitive component 30 of each touch position is at duty, and to reading holding wire output current flow I2With initial current I1.Then by the current flow I according to each touch position of the signal processor 32 as shown in Figure 72With initial current I1Relatively draw current variation value △ I, and show that the current finger of each touch position finger is by pressure according to current variation value △ I.
Finally, by the current finger of each touch position by pressure compared with dynamics grade threshold Fm, to determine that the finger of each position of touch described is by pressure rating.
Embodiment three
In the present embodiment, when touch-control display panel 01 includes touch control component 33 as shown in figures 6 a and 6b, it is possible to by this touch control component 33, position of touch is detected, and only the touch-control pressure of position of touch is detected.
Concrete, light sensitive component 30 to read holding wire (S1, S2 ... or Sn) export current flow I2And before storing, said method also includes:
By touch control component 33, position of touch is detected.Concrete, can adopt and can be formed mutual capacitance type touch control capacitance by touch-control sensing electrode RX and touch-control drive electrode TX as shown in Figure 6 a, or can adopt and be formed self-tolerant touch control capacitance by touch control electrode as shown in Figure 6 b, according to the change of electric capacity, position of touch be detected.
It follows that to initial current I1With current flow I2Compare and draw current variation value △ I, and show that current finger is by pressure according to current variation value △ I, by current finger by pressure compared with dynamics grade threshold, to determine that finger is by pressure rating, including:
The scan signal line of touch position is opened simultaneously, so that the light sensitive component of touch position is opened simultaneously so that the light sensitive component 30 of each touch position is at duty, and to reading holding wire output current flow I2With initial current I1.Then by the current flow I according to each touch position of the signal processor 32 as shown in Figure 72With initial current I1Relatively draw current variation value △ I, and show that the current finger of each touch position finger is by pressure according to current variation value △ I.
By the current finger of each touch position by pressure compared with dynamics grade threshold Fm, to determine that the finger of each position of touch is by pressure rating.
In sum, the touch-control pressure of each touch position can be detected by the method described in embodiment two and embodiment three, so that identical corresponding by the surging grade touch-control pressure of diverse location can call different orders, what expand order calls scope.Such as, when finger is by pressure rating I by surging, when user presses the center of picture, it is possible to call picture and amplify order, and when user presses the marginal position of picture, it is possible to perform to close the order of picture.
The above; being only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope that the invention discloses; change can be readily occurred in 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 described scope of the claims.
Claims (12)
1. an array base palte, it is characterised in that include multiple sub-pix and be arranged in the light sensitive component of described sub-pix；
Described light sensitive component connects the scan signal line of the first voltage end and transverse and longitudinal intersection respectively and reads holding wire, for under the control of described scan signal line and described first voltage end, open described light sensitive component, touch-control pressure is detected by photoelectric conversion, and testing result is exported by described reading holding wire.
2. array base palte according to claim 1, it is characterised in that described light sensitive component includes light sensitive diode, switch transistors pipe and storage electric capacity；
The grid of described switch transistors pipe connects described scan signal line, and the first pole connects the anode of described light sensitive diode, and the second pole is connected with described reading holding wire；
The negative electrode of described light sensitive diode connects described first voltage end；
One end of described electric capacity is connected with the anode of described light sensitive diode, and the other end connects the negative electrode of described light sensitive diode.
3. array base palte according to claim 1, it is characterised in that at least three is arranged in order and the sub-pix of different colours constitutes a pixel cell, is provided with a described light sensitive component in each pixel cell.
4. array base palte according to claim 3 a, it is characterised in that when sub-pix in described pixel cell is blue subpixels, described light sensitive component is arranged in described blue subpixels.
5. array base palte according to claim 1, it is characterised in that the light sensitive component being positioned at same a line connects scan signal line described in same, the light sensitive component being positioned at same string connects reading holding wire described in same.
6. a touch-control display panel, it is characterised in that include the array base palte as described in any one of claim 1-5.
7. touch-control display panel according to claim 6, it is characterised in that also include the touch control component for detecting position of touch.
8. one kind adopts the touch-control display panel as described in claim 1-6 that touch-control pressure is carried out detection method, it is characterised in that including:
Scan signal line and the first voltage end control light sensitive component and open；
Touch-control pressure is detected by described light sensitive component by photoelectric conversion, and testing result is exported by described reading holding wire.
9. touch-control pressure detection method according to claim 8, it is characterised in that touch-control pressure is detected by described light sensitive component by photoelectric conversion, and testing result is included by the output of described reading holding wire:
Described light sensitive component is to reading holding wire output initial current and storing；Wherein, when described initial current is for contacting and not pressing, the current value of described light sensitive component output；
Described light sensitive component is to reading holding wire output current flow and storing；Wherein, described current flow is after pressing, the current value of described light sensitive component output；
Described initial current and described current flow are compared and draws current variation value, and show that current finger is by pressure according to described current variation value；
By described current finger by pressure compared with dynamics grade threshold, to determine that finger is by pressure rating.
10. touch-control pressure detection method according to claim 9, it is characterized in that, when each pixel cell is provided with a described light sensitive component, and the light sensitive component being positioned at same a line connects scan signal line described in same, when being positioned at reading holding wire described in the light sensitive component connection same of same string
Described light sensitive component exports to reading holding wire before current flow storage, described method also includes: at least two line scan signals lines constitute scanning signal group, described scanning signal group is opened one by one, so that the light sensitive component being connected with the scan signal line in described scanning signal group is opened simultaneously, and determine position of touch according to the first position reading holding wire and described scanning signal group；Wherein, the current flow of described first reading holding wire output is different from initial current；
Described initial current and described current flow are compared and draw current variation value, and show that current finger is by pressure according to described current variation value, by described current finger by pressure compared with dynamics grade threshold, to determine that finger is by pressure rating, including:
The current flow of each touch position is compared with initial current and draws current variation value, and show that the current finger of each touch position finger described is by pressure according to described current variation value；
By the current finger of each touch position described by pressure compared with described dynamics grade threshold, to determine that the finger of each position of touch described is by pressure rating.
11. touch-control pressure detection method according to claim 9, it is characterised in that when described touch-control display panel includes touch control component,
Described light sensitive component exports before current flow storage to reading holding wire, and described method also includes: by described touch control component, position of touch is detected；
Described initial current and described current flow are compared and draw current variation value, and show that current finger is by pressure according to described current variation value, by described current finger by pressure compared with dynamics grade threshold, to determine that finger is by pressure rating, including:
The scan signal line of described touch position is opened simultaneously, so that the light sensitive component of described touch position is opened simultaneously；
The current flow of each touch position is compared with initial current and draws current variation value, and show that the current finger of each touch position finger described is by pressure according to described current variation value；
By the current finger of each touch position described by pressure compared with described dynamics grade threshold, to determine that the finger of each position of touch described is by pressure rating.
12. a display device, it is characterised in that include touch-control display panel as claimed in claims 6 or 7, also include the scanner driver being connected with described scan signal line and the signal processor being connected with described reading holding wire.
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