CN205068355U - Touch substrate and display device - Google Patents
Touch substrate and display device Download PDFInfo
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- CN205068355U CN205068355U CN201520860628.9U CN201520860628U CN205068355U CN 205068355 U CN205068355 U CN 205068355U CN 201520860628 U CN201520860628 U CN 201520860628U CN 205068355 U CN205068355 U CN 205068355U
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Abstract
The utility model discloses a touch substrate and display device increases the touch -control pressure driven electrode and the touch -control forced induction electrode that set up the constitution mutual capacitance structure between touch -control detection electrode place rete and substrate base plate in touch substrate, when touch substrate is pressed, and the corresponding reduction of capacitance value that distance between the metal level of touch substrate and below diminishes and brings the mutual capacitance structure thereupon. Consequently, at the pressure detection time quantum, through to touch -control pressure driven electrode loading touch -control drive signal, the semaphore that detects the touch -control forced induction electrode that is aroused by the pressure of touch -control position changes, can determine the capacitance value change volume of mutual capacitance structure to realize the forced induction function. In touch -control check -out time section, simultaneously to touch -control detection electrode, touch -control pressure driven electrode and the same touch -control detected signal of touch -control forced induction electrode loading, change in order to judge the touch -control position through the capacitance value that detects each touch -control detection electrode, realize that the function is listened to the two dimension of touch -control.
Description
Technical field
The utility model relates to technical field of touch-control display, particularly relates to a kind of touch base plate and display device.
Background technology
The fields such as pressure sensitive technology refers to the technology can implementing detection to external force, and this technology is just used in industry control for a long time, medical treatment.At present, the mode realizing pressure sensitive in display field especially mobile phone or dull and stereotyped field increases extra mechanism to realize in the backlight portion of display panels or the midframe part of mobile phone, this design needs to make change to the structural design of display panels or mobile phone, and due to build-up tolerance comparatively large, the detection accuracy of this design is also restricted.
Therefore, how to realize the higher pressure sensitive of detection accuracy when display panel hardware modifications is less, be the problem that solution is needed in skilled person territory badly.
Utility model content
In view of this, the utility model embodiment provides a kind of touch base plate and display device, in order to realize the three-dimensional detection of touch-control.
Therefore, a kind of touch base plate that the utility model embodiment provides, comprises underlay substrate, and is arranged at the touch detection electrodes on underlay substrate, also comprise:
To be arranged between described touch detection electrodes place rete and described underlay substrate and different layer arranges the touch-control pressure-driven electrode and touch-control pressure sensitive electrode that form mutual capacitance structure;
In the touch control detection time period, touch control detection signal is loaded to described touch detection electrodes, touch-control pressure-driven electrode and touch-control pressure sensitive electrode simultaneously, detect the capacitance variation of each described touch detection electrodes to judge position of touch; In the pressure detection time period, touch-control drive singal is loaded to described touch-control pressure-driven electrode, detect the touch detection chip of the semaphore change of the described touch-control pressure sensitive electrode caused by the pressure of position of touch.
In a kind of possible implementation, in the above-mentioned touch base plate that the utility model embodiment provides, described touch base plate is array base palte; Described touch-control pressure-driven electrode by the pixel column gap location be arranged in described array base palte, and forms with at least one drive signal line that data line is arranged with layer.
In a kind of possible implementation, in the above-mentioned touch base plate that the utility model embodiment provides, the first wire by arranging with layer with grid line between each drive signal line belonging to same described touch-control pressure-driven electrode is electrically connected mutually.
In a kind of possible implementation, in the above-mentioned touch base plate that the utility model embodiment provides, described touch base plate is array base palte; Described touch-control pressure sensitive electrode by the pixel column gap location be arranged in array base palte, and forms with at least one induced signal line that grid line is arranged with layer.
In a kind of possible implementation, in the above-mentioned touch base plate that the utility model embodiment provides, the second wire by arranging with layer with data line between each induced signal line belonging to same described touch-control pressure sensitive electrode is electrically connected mutually.
In a kind of possible implementation, in the above-mentioned touch base plate that the utility model embodiment provides, also comprise: be arranged at the pixel column gap location except the pixel column gap except being provided with described induced signal line, and the floating electrode arranged with layer with described grid line.
In a kind of possible implementation, in the above-mentioned touch base plate that the utility model embodiment provides, described touch detection electrodes is that multiple same layer is arranged and separate self-capacitance electrode; Or,
Described touch detection electrodes is touch-control drive electrode arranged in a crossed manner and touch-control sensing electrode.
In a kind of possible implementation, in the above-mentioned touch base plate that the utility model embodiment provides, each described self-capacitance electrode forms the common electrode layer on described array base palte.
In a kind of possible implementation, in the above-mentioned touch base plate that the utility model embodiment provides, in the touch control detection time period, the grid line in described array base palte loads the electric signal identical with described touch control detection signal with data line.
A kind of display device that the utility model embodiment provides, comprises the above-mentioned touch base plate that the utility model embodiment provides, and is arranged on the metal level below touch base plate.
In a kind of possible implementation, in the above-mentioned display device that the utility model embodiment provides, described metal level is the center of mobile phone or the backlight metal at the backlight module back side.
The beneficial effect of the utility model embodiment comprises:
A kind of touch base plate that the utility model embodiment provides and display device, add in touch base plate and be arranged at touch-control pressure-driven electrode between touch detection electrodes place rete and underlay substrate and touch-control pressure sensitive electrode, the touch-control pressure sensitive electrode increased and touch-control pressure-driven electrode composition mutual capacitance structure, when touch base plate is pressed, the distance between touch base plate and the metal level of below diminishes the minimizing thereupon bringing the capacitance of mutual capacitance structure corresponding.Therefore, in the pressure detection time period, by loading touch-control drive singal to touch-control pressure-driven electrode, detect the semaphore change of the touch-control pressure sensitive electrode caused by the pressure of position of touch, the capacitance variation amount of mutual capacitance structure can be determined, thus the pressure in the z direction perpendicular to touch screen surface is detected, realize pressure sensitive function.In the touch control detection time period, owing to loading identical touch control detection signal to touch detection electrodes, touch-control pressure-driven electrode and touch-control pressure sensitive electrode simultaneously, touch-control pressure-driven electrode and touch-control pressure sensitive electrode can eliminate the stray capacitance of touch detection electrodes, the change now being pressed the spacing of the metal level of touch base plate and the below of causing by touch-control can not impact the capacitance of touch detection electrodes, therefore, by detecting the capacitance variation of each touch detection electrodes to judge position of touch, the two-dimentional detecting function of touch-control can be realized.
Accompanying drawing explanation
The structural representation of the touch base plate that Fig. 1 provides for the utility model embodiment;
The vertical view of the touch base plate that Fig. 2 provides for the utility model embodiment;
The driver' s timing schematic diagram of the touch base plate that Fig. 3 provides for the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, the touch base plate provide the utility model embodiment and the embodiment of display device are described in detail.
In accompanying drawing, the thickness of each rete and shape do not reflect actual proportions, and object just signal illustrates the utility model content.
A kind of touch base plate that the utility model embodiment provides, as shown in Figure 1, comprises underlay substrate 01, and is arranged at the touch detection electrodes 02 on underlay substrate 01, also comprises:
To be arranged between touch detection electrodes 02 place rete and underlay substrate 01 and different layer arranges the touch-control pressure-driven electrode 03 and touch-control pressure sensitive electrode 04 that form mutual capacitance structure;
In the touch control detection time period, touch control detection signal is loaded to touch detection electrodes 02, touch-control pressure-driven electrode 03 and touch-control pressure sensitive electrode 04 simultaneously, detect the capacitance variation of each touch detection electrodes 02 to judge position of touch; In the pressure detection time period, touch-control drive singal is loaded to touch-control pressure-driven electrode 03, detect the touch detection chip of the semaphore change of the touch-control pressure sensitive electrode 04 caused by the pressure of position of touch.
The above-mentioned touch base plate that the utility model embodiment provides, add in touch base plate and be arranged at touch-control pressure-driven electrode 03 between touch detection electrodes 02 place rete and underlay substrate 01 and touch-control pressure sensitive electrode 04, the touch-control pressure sensitive electrode 04 increased and touch-control pressure-driven electrode 03 form mutual capacitance structure, when touch base plate is pressed, the distance between touch base plate and the metal level 05 of below diminishes the minimizing thereupon bringing the capacitance of mutual capacitance structure corresponding.Therefore, in the pressure detection time period, by loading touch-control drive singal to touch-control pressure-driven electrode 03, detect the semaphore change of the touch-control pressure sensitive electrode 04 caused by the pressure of position of touch, the capacitance variation amount of mutual capacitance structure can be determined, thus the pressure in the z direction perpendicular to touch screen surface is detected, realize pressure sensitive function.In the touch control detection time period, due to simultaneously to touch detection electrodes 02, touch-control pressure-driven electrode 03 and touch-control pressure sensitive electrode 04 load identical touch control detection signal, touch-control pressure-driven electrode 03 and touch-control pressure sensitive electrode 04 can eliminate the stray capacitance of touch detection electrodes 02, the change now being pressed the spacing of the metal level 05 of touch base plate and the below of causing by touch-control can not impact the capacitance of touch detection electrodes 02, therefore, can by detecting the capacitance variation of each touch detection electrodes 02 to judge position of touch, realize the two-dimentional detecting function of touch-control.
In the specific implementation, the array base palte of the above-mentioned touch base plate that the utility model embodiment provides generally in concrete employing touch-screen, for the ease of the transmission of signal, the touch-control pressure-driven electrode 03 increased and touch-control pressure sensitive electrode 04 generally adopt metal material to make, further, touch-control pressure-driven electrode 03 and touch-control pressure sensitive electrode 04 in order to make increase do not affect the aperture opening ratio of viewing area in array base palte and save manufacture craft cost.In the specific implementation, as shown in Figure 2, touch-control pressure-driven electrode 03 by the pixel 06 row gap location be arranged in array base palte, and can form with at least one drive signal line 031 that data line 07 is arranged with layer.Like this, on the basis of existing array base palte preparation technology, do not need to increase extra technique, can production cost be saved, enhance productivity.
Further, in the above-mentioned touch base plate that the utility model embodiment provides, for the ease of loading touch-control drive singal to drive signal line 031, as shown in Figure 2, mutually can be electrically connected between each drive signal line 031 belonging to same touch-control pressure-driven electrode 03 by the first wire 032 arranged with layer with grid line 08.Further, because the first wire 032 is arranged with layer with grid line 08, each drive signal line 031 is arranged with layer with data line 07, and both are not at same rete, therefore, need both to be connected by via hole.
In like manner, in the specific implementation, as shown in Figure 2, touch-control pressure sensitive electrode 04 by the pixel 06 row gap location be arranged in array base palte, and can form with at least one induced signal line 041 that grid line 08 is arranged with layer.Like this, on the basis of existing array base palte preparation technology, do not need to increase extra technique, can production cost be saved, enhance productivity.
Further, in the above-mentioned touch base plate that the utility model embodiment provides, for the ease of detecting the semaphore change of induced signal line 041, as shown in Figure 2, mutually can be electrically connected between each induced signal line 041 belonging to same touch-control pressure sensitive electrode 04 by the second wire 042 arranged with layer with data line 07.Further, because the second wire 042 is arranged with layer with data line 07, each induced signal line 041 is arranged with layer with grid line 08, and both are not at same rete, therefore, need both to be connected by via hole.
Further, in the above-mentioned touch base plate that the utility model embodiment provides, as shown in Figure 2, can also comprise: be arranged at pixel 06 except the being provided with induced signal line 041 pixel 06 row gap location in the ranks except gap, and the floating electrode 09 arranged with layer with grid line 08, arranging of this floating electrode 09 can ensure diffuse to below at the electric field of pressure detection time period touch-control pressure-driven electrode 03 and be subject to the impact of metal level 05.This floating electrode 09 loads identical loading touch detection signal in the touch control detection time period with induced signal line 041, in the unsettled setting of pressure detection time period, namely do not load any signal.
In like manner, further, in the above-mentioned touch base plate that the utility model embodiment provides, for the ease of adding electrical signals to floating electrode 09, as shown in Figure 2, each floating electrode 09 can be electrically connected mutually by the privates 091 arranged with layer with data line 07.Further, because privates 091 and data line 07 are arranged with layer, each floating electrode 09 is arranged with layer with grid line 08, and both are not at same rete, therefore, need both to be connected by via hole.
In the specific implementation, in the touch base plate that the utility model embodiment provides, concrete structure for the touch detection electrodes 02 of touch detection can have multiple implementation, and such as, touch detection electrodes 02 can be arranged by multiple same layer and separate self-capacitance electrode forms; Touch detection electrodes 02 also can be made up of touch-control drive electrode arranged in a crossed manner and touch-control sensing electrode.
Wherein, when adopting self-capacitance electrode to realize touch detection function, the multiplexing self-capacitance electrode of the common electrode layer in array base palte can be adopted, namely the common electrode layer on respective capacitance electrode composition array base palte, when the structure of common electrode layer being carried out change and being divided into self-capacitance electrode, on the basis of existing array base palte preparation technology, do not need to increase extra technique, can production cost be saved, enhance productivity.
Particularly, when the above-mentioned touch base plate that the utility model embodiment provides is applied to display panel, in order to reduce the mutual interference between display and touching signals, in the specific implementation, need the mode adopting touch-control and display stage timesharing to drive, further, display driver chip and touch detection chip can also be integrated into a chip in the specific implementation, reduce production cost further.
Particularly, such as: in driver' s timing figure as shown in Figure 3, generally the time of each frame (V-sync) in display panel is divided into displaying time section (Display), touch control detection time period (Touch) and pressure detection time period (Force).
At displaying time section (Display), as shown in Figure 3, successively scanning gate signal is applied to the every bar signal line Gate in display panel, grayscale signal is applied to data signal line Source; When adopting common electrode layer Vcom multiplexing self-capacitance electrode Cm as touch detection electrodes 02, the touch detection chip be connected with respective capacitance electrode Cm applies common electrode signal, to realize crystal display respectively to respective capacitance electrode Cm.
At touch control detection time period (Touch), as shown in Figure 3, touch detection chip loads touch control detection signal to as self-capacitance electrode Cm, the touch-control pressure-driven electrode Tx of touch detection electrodes 02 and touch-control pressure sensitive electrode Rx simultaneously.Touch-control pressure-driven electrode Tx and touch-control pressure sensitive electrode Rx can eliminate the stray capacitance of the self-capacitance electrode Cm as touch detection electrodes 02, the change now being pressed the spacing of the metal level 05 of touch base plate and the below of causing by touch-control can not impact the capacitance of self-capacitance electrode Cm, therefore, by detecting the capacitance variation of respective capacitance electrode Cm to judge position of touch, the two-dimentional detecting function of touch-control can be realized.
Further, as shown in Figure 3, in order to avoid producing ground capacitance between the grid line Gate in touch control detection time period (Touch) array base palte and data line Source and the self-capacitance electrode Cm as touch detection electrodes 02 thus affecting the accuracy of touch control detection, in the specific implementation, in the touch control detection time period, the electric signal identical with touch control detection signal can be loaded by grid line Gate in array substrate with data line Source, grid line Gate and the ground capacitance between data line Source and touch detection electrodes 02 can be eliminated like this, be convenient to the accuracy improving position of touch detection.
At pressure detection time period (Force), as shown in Figure 3, touch detection chip loads touch-control drive singal to touch-control pressure-driven electrode Tx, now, distance between the touch base plate caused when touch base plate is pressed and the metal level 05 of below diminishes the minimizing thereupon bringing the capacitance of mutual capacitance structure between touch-control pressure-driven electrode Tx and touch-control pressure sensitive electrode Rx corresponding, therefore the semaphore change of the touch-control pressure sensitive electrode Rx caused by the pressure of position of touch is detected, the capacitance variation amount of mutual capacitance structure can be determined, thus the pressure in the z direction perpendicular to touch screen surface is detected, realize pressure sensitive function.
It should be noted that, the above-mentioned touch base plate that the utility model embodiment provides specifically can be applied to display panels (LiquidCrystalDisplay, LCD), or, also organic EL display panel (OrganicElectroluminesecentDisplay, OLED) can be applied to, or, other display panels can also be applied to, not limit at this.
Conceive based on same utility model, the utility model embodiment still provides a kind of display device, comprises the above-mentioned touch base plate that the utility model embodiment provides, and is arranged on the metal level below touch base plate.This display device can be: any product or parts with Presentation Function such as mobile phone, panel computer, televisor, display, notebook computer, digital album (digital photo frame), navigating instrument.The enforcement of this display device see the embodiment of above-mentioned touch base plate, can repeat part and repeats no more.
Particularly, when the above-mentioned display device that the utility model embodiment provides is mobile phone, the metal level be arranged on below touch base plate can be the center of mobile phone, and the center namely in mobile phone firmware serves as the effect of metal level; When the touch substrate of the above-mentioned display device that the utility model embodiment provides is arranged on LCD intralamellar part, the metal level be arranged on below touch base plate can be the backlight metal at the backlight module back side, namely adopts the backlight metal at the backlight module back side to serve as the effect of metal level.Further, this backlight metal can be specially the metal frame be coated on outside backlight module, also can be specially the metal patch being covered on the backlight module back side, not limit at this.
Conceive based on same utility model, the utility model embodiment still provides a kind of driving method of above-mentioned display device, comprising:
In the touch control detection time period, touch control detection signal is loaded to touch detection electrodes, touch-control pressure-driven electrode and touch-control pressure sensitive electrode simultaneously, detect the capacitance variation of each touch detection electrodes to judge position of touch;
In the pressure detection time period, touch-control drive singal is loaded to touch-control pressure-driven electrode, detect the semaphore change of the touch-control pressure sensitive electrode caused by the pressure of position of touch.
Further, in above-mentioned driving method, also comprise: in the touch control detection time period, with data line, the electric signal identical with touch control detection signal is loaded to grid line.
A kind of touch base plate that the utility model embodiment provides and display device, add in touch base plate and be arranged at touch-control pressure-driven electrode between touch detection electrodes place rete and underlay substrate and touch-control pressure sensitive electrode, the touch-control pressure sensitive electrode increased and touch-control pressure-driven electrode composition mutual capacitance structure, when touch base plate is pressed, the distance between touch base plate and the metal level of below diminishes the minimizing thereupon bringing the capacitance of mutual capacitance structure corresponding.Therefore, in the pressure detection time period, by loading touch-control drive singal to touch-control pressure-driven electrode, detect the semaphore change of the touch-control pressure sensitive electrode caused by the pressure of position of touch, the capacitance variation amount of mutual capacitance structure can be determined, thus the pressure in the z direction perpendicular to touch screen surface is detected, realize pressure sensitive function.In the touch control detection time period, owing to loading identical touch control detection signal to touch detection electrodes, touch-control pressure-driven electrode and touch-control pressure sensitive electrode simultaneously, touch-control pressure-driven electrode and touch-control pressure sensitive electrode can eliminate the stray capacitance of touch detection electrodes, the change now being pressed the spacing of the metal level of touch base plate and the below of causing by touch-control can not impact the capacitance of touch detection electrodes, therefore, by detecting the capacitance variation of each touch detection electrodes to judge position of touch, the two-dimentional detecting function of touch-control can be realized.
Obviously, those skilled in the art can carry out various change and modification to the utility model and not depart from spirit and scope of the present utility model.Like this, if these amendments of the present utility model and modification belong within the scope of the utility model claim and equivalent technologies thereof, then the utility model is also intended to comprise these change and modification.
Claims (11)
1. a touch base plate, comprises underlay substrate, and is arranged at the touch detection electrodes on underlay substrate, it is characterized in that, also comprises:
To be arranged between described touch detection electrodes place rete and described underlay substrate and different layer arranges the touch-control pressure-driven electrode and touch-control pressure sensitive electrode that form mutual capacitance structure;
In the touch control detection time period, touch control detection signal is loaded to described touch detection electrodes, touch-control pressure-driven electrode and touch-control pressure sensitive electrode simultaneously, detect the capacitance variation of each described touch detection electrodes to judge position of touch; In the pressure detection time period, touch-control drive singal is loaded to described touch-control pressure-driven electrode, detect the touch detection chip of the semaphore change of the described touch-control pressure sensitive electrode caused by the pressure of position of touch.
2. touch base plate as claimed in claim 1, it is characterized in that, described touch base plate is array base palte; Described touch-control pressure-driven electrode by the pixel column gap location be arranged in described array base palte, and forms with at least one drive signal line that data line is arranged with layer.
3. touch base plate as claimed in claim 2, is characterized in that, the first wire by arranging with layer with grid line between each drive signal line belonging to same described touch-control pressure-driven electrode is electrically connected mutually.
4. touch base plate as claimed in claim 1, it is characterized in that, described touch base plate is array base palte; Described touch-control pressure sensitive electrode by the pixel column gap location be arranged in array base palte, and forms with at least one induced signal line that grid line is arranged with layer.
5. touch base plate as claimed in claim 4, is characterized in that, the second wire by arranging with layer with data line between each induced signal line belonging to same described touch-control pressure sensitive electrode is electrically connected mutually.
6. touch base plate as claimed in claim 4, is characterized in that, also comprises: being arranged at the pixel column gap location except the pixel column gap except being provided with described induced signal line, and the floating electrode arranged with layer with described grid line.
7. the touch base plate as described in any one of claim 2-6, is characterized in that, described touch detection electrodes is that multiple same layer is arranged and separate self-capacitance electrode; Or,
Described touch detection electrodes is touch-control drive electrode arranged in a crossed manner and touch-control sensing electrode.
8. touch base plate as claimed in claim 7, it is characterized in that, each described self-capacitance electrode forms the common electrode layer on described array base palte.
9. the touch base plate as described in any one of claim 2-6, is characterized in that, in the touch control detection time period, the grid line in described array base palte loads the electric signal identical with described touch control detection signal with data line.
10. a display device, is characterized in that, comprises the touch base plate as described in any one of claim 1-9, and is arranged on the metal level below touch base plate.
11. display device as claimed in claim 10, is characterized in that, described metal level is the center of mobile phone or the backlight metal at the backlight module back side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520860628.9U CN205068355U (en) | 2015-10-30 | 2015-10-30 | Touch substrate and display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520860628.9U CN205068355U (en) | 2015-10-30 | 2015-10-30 | Touch substrate and display device |
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| CN205068355U true CN205068355U (en) | 2016-03-02 |
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| CN201520860628.9U Withdrawn - After Issue CN205068355U (en) | 2015-10-30 | 2015-10-30 | Touch substrate and display device |
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| CN107562290A (en) * | 2016-07-01 | 2018-01-09 | 南昌欧菲生物识别技术有限公司 | Electronic equipment |
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