CN205038622U - Touch screen and display device - Google Patents
Touch screen and display device Download PDFInfo
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- CN205038622U CN205038622U CN201520826444.0U CN201520826444U CN205038622U CN 205038622 U CN205038622 U CN 205038622U CN 201520826444 U CN201520826444 U CN 201520826444U CN 205038622 U CN205038622 U CN 205038622U
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Abstract
The utility model provides a touch screen and display device. This touch -sensitive screen includes keeps away from fixed electrode various membrane base plate on one side of to closing the liquid crystal cell that forms and setting up at array substrate by array substrate and various membrane base plate, still include shielding electrode and NULL, NULL sets up on array substrate, shielding electrode is located one side of keeping away from the fixed electrode of NULL, driving electrode when NULL is used as the pressure touch -control, the fixed electrode is corresponding with NULL's position, be used for assisting when the pressure touch -control driving electrode to survey touch -control pressure. The forced induction touch -control of self -capacitance principle has been realized to this touch -sensitive screen, has not only reduced the preparation degree of difficulty of forced induction touch -sensitive screen, has improved the touch -control accuracy of forced induction touch -sensitive screen, has reduced the production and the assembly costs of forced induction touch -sensitive screen moreover to make the forced induction touch -sensitive screen promote widely fast more.
Description
Technical field
The utility model relates to display technique field, particularly, relates to a kind of touch-screen 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, many manufacturers are seeking suitable scheme and are realizing pressure sensitive touch-control in display field especially mobile phone or field of flat panel displays, and the display with pressure touch function can make client obtain better man-machine interaction experience.
But at present, the display with pressure sensitive touch controllable function is additionally increase pressure touch mechanism to realize the pressure touch function of display in the backlight portion of display (as liquid crystal display) or the midframe part of mobile phone mostly, this design, need to make change to the structural design of display itself, and over the display assembling pressure touch-control mechanism time, because build-up tolerance is comparatively large, so the pressure detection accuracy of pressure touch mechanism receives larger restriction in this design; In addition, it is also relatively high that this design makes display realize the cost of pressure sensitive touch-control, is unfavorable for pressure sensitive touch-control extensively promoting fast in display field.
Utility model content
The utility model, for the above-mentioned technical matters existed in prior art, provides a kind of touch-screen and display device.This touch-screen achieves the pressure sensitive touch-control of self-capacitance principle, not only reduce the manufacture difficulty of pressure sensitive touch-screen, improve the touch-control degree of accuracy of pressure sensitive touch-screen, and reduce production and the assembly cost of pressure sensitive touch-screen, thus pressure sensitive touch-screen can also be promoted more fast widely.
The utility model provides a kind of touch-screen, comprise the liquid crystal cell that involuted by array base palte and color membrane substrates and be arranged on the fixed electorde of described array base palte away from described color membrane substrates side, also comprise guarded electrode and public electrode, described public electrode is arranged on described array base palte, described guarded electrode is positioned at the side away from described fixed electorde of described public electrode, described public electrode is used as the first drive electrode during pressure touch, described fixed electorde is corresponding with the position of described public electrode, for assisting described first drive electrode to detect touch-control pressure when pressure touch.
Preferably, described public electrode comprises multiple shape identical strip first sub-electrode, and multiple described first sub-electrode is parallel to each other and arranges successively along the length direction perpendicular to described first sub-electrode.
Preferably, described public electrode comprises multiple shape identical strip first sub-electrode, and multiple described first sub-electrode is matrix arrangement, and the length direction of described first sub-electrode is parallel to the line direction of described matrix.
Preferably, each described first sub-electrode connects a drive signal line respectively.
Preferably, described fixed electorde ground connection or be connected and fixed voltage.
Preferably, described guarded electrode is arranged on described array base palte or described color membrane substrates.
Preferably, the size and shape of described guarded electrode is identical with described public electrode, described guarded electrode and described public electrode just to and overlap.
Preferably, also comprise induction electrode, described induction electrode is arranged on described color membrane substrates, described public electrode is also used as the second drive electrode during mutual capacitance touch-control, and described induction electrode is positioned at the side of the side away from described public electrode of described guarded electrode or the close described public electrode of described guarded electrode.
Preferably, described induction electrode comprises multiple shape identical strip second sub-electrode, multiple described second sub-electrode is parallel to each other and arranges successively along perpendicular to the length direction of described second sub-electrode, and the arragement direction of described second sub-electrode is perpendicular to the arragement direction of described first sub-electrode.
The utility model also provides a kind of display device, comprises above-mentioned touch-screen.
The beneficial effects of the utility model: touch-screen provided by the utility model, by arranging guarded electrode at public electrode away from the side of fixed electorde, and the first drive electrode when making public electrode be used as pressure touch; The fixed electorde simultaneously utilizing touch-screen inside to carry is auxiliary carries out pressure touch, achieve the pressure sensitive touch-control of self-capacitance principle, not only reduce the manufacture difficulty of pressure sensitive touch-screen, improve the touch-control degree of accuracy of pressure sensitive touch-screen, and reduce production and the assembly cost of pressure sensitive touch-screen, thus pressure sensitive touch-screen can also be promoted more fast widely.
Display device provided by the utility model, by adopting above-mentioned touch-screen, enabling this display device realize the pressure sensitive touch-control of self-capacitance principle, also reducing production and the assembly cost of this display device simultaneously.
Accompanying drawing explanation
Fig. 1 is the structure cut-open view of touch-screen in the utility model embodiment 1;
Fig. 2 is the structure vertical view of public electrode and wiring thereof in Fig. 1;
Fig. 3 is public electrode, guarded electrode and the induction electrode arrangement schematic diagram in touch-screen in Fig. 1;
Fig. 4 is the another kind of structure cut-open view of touch-screen in the utility model embodiment 1;
Fig. 5 is another structure cut-open view of touch-screen in the utility model embodiment 1;
Fig. 6 is the driver' s timing figure of public electrode in the utility model embodiment 1 in touch-screen and guarded electrode;
Fig. 7 is the structure vertical view of public electrode in touch-screen in the utility model embodiment 2;
Fig. 8 is the driver' s timing figure of public electrode in the utility model embodiment 3 in touch-screen and guarded electrode.
Description of reference numerals wherein:
1. array base palte; 2. color membrane substrates; 21. substrates; 3. liquid crystal cell; 4. fixed electorde; 5. guarded electrode; 6. public electrode; 61. first sub-electrodes; 7. drive signal line; 8. induction electrode; 81. second sub-electrodes; 9. insulation course; Vcom. public voltage signal; Vforce. pressure touch drive singal; Vh. mutual capacitance touch-control drive singal.
Embodiment
For making those skilled in the art understand the technical solution of the utility model better, below in conjunction with the drawings and specific embodiments, a kind of touch-screen provided by the utility model and display device are described in further detail.
Embodiment 1:
The present embodiment provides a kind of touch-screen, as shown in Figure 1, comprise the liquid crystal cell 3 that involuted by array base palte 1 and color membrane substrates 2 and be arranged on the fixed electorde 4 of array base palte 1 away from color membrane substrates 2 side, also comprise guarded electrode 5 and public electrode 6, public electrode 6 is arranged on array base palte 1, guarded electrode 5 is positioned at the side away from fixed electorde 4 of public electrode 6, public electrode 6 is used as the first drive electrode during pressure touch, fixed electorde 4 is corresponding with the position of public electrode 6, for the first drive electrode auxiliary when pressure touch, touch-control pressure is detected.
In the present embodiment, be usually provided with center in touch-screen, center is used for the inside of touch-screen and the external world to carry out isolation and shield, and wherein, fixed electorde 4 adopts the center of touch-screen.When pressure touch, form self-capacitance between the first drive electrode and fixed electorde 4, this self-capacitance can change along with the change of the pressure size be applied on touch-screen, and namely during pressure touch, the pressure be applied on touch-screen is larger, and self-capacitance change greatly; The pressure be applied on touch-screen is less, and the change of mutual capacitance is also thereupon less, thus realizes the pressure touch to this touch-screen.To in the pressure touch process of this touch-screen, guarded electrode 5 carries out to touch-screen the electric capacity that formed between the touch control object of pressure touch and the first drive electrode for eliminating, thus avoid the electric capacity that produces between touch control object and the first drive electrode to cause interference to the self-capacitance produced when pressure touch between the first drive electrode and fixed electorde 4, and then not only make this touch-screen achieve the pressure touch of self-capacitance touch-control principle, and this touch-screen is improved greatly to the detection accuracy of pressure when pressure touch.
This touch-screen is by arranging guarded electrode 5 at public electrode 6 away from the side of fixed electorde 4, and the first drive electrode when making public electrode 6 be used as pressure touch; The fixed electorde 4 simultaneously utilizing touch-screen inside to carry is auxiliary carries out pressure touch, achieve the pressure sensitive touch-control of self-capacitance principle, not only reduce the manufacture difficulty of pressure sensitive touch-screen, improve the touch-control degree of accuracy of pressure sensitive touch-screen, and reduce production and the assembly cost of pressure sensitive touch-screen, thus pressure sensitive touch-screen can also be promoted more fast widely.
In the present embodiment, as shown in Figure 2, public electrode 6 comprises multiple shape identical strip first sub-electrode 61, and multiple first sub-electrode 61 is parallel to each other and arranges successively along the length direction perpendicular to the first sub-electrode 61.Wherein, each first sub-electrode 61 connects a drive signal line 7 respectively.Setting like this, can realize between the first sub-electrode 61 and fixed electorde 4 by self-capacitance principle detection effect touch-control pressure on the touchscreen.
In the present embodiment, this touch-screen also comprises backlight (not shown), and backlight is arranged on the side away from color membrane substrates 2 of array base palte 1, and fixed electorde 4 is positioned at the side away from array base palte 1 of backlight; Fixed electorde 4 is corresponding with public electrode 6, and fixed electorde 4 ground connection.Certainly, fixed electorde 4 also can connect fixed voltage.Fixed electorde 4 is arranged on the side away from array base palte 1 of backlight, make it both can not impact the normal display of touch-screen, the inside and outside formation isolation and shield of fixed electorde 4 pairs of touch-screens can be guaranteed again simultaneously, make touch-screen inside can not produce electric discharge to outside, also can guarantee that exterior object can not impact the inside of touch-screen or damage.
In the present embodiment, guarded electrode 5 is arranged on color membrane substrates 2.As shown in Figure 3, the size and shape of guarded electrode 5 is identical with public electrode 6, guarded electrode 5 and public electrode 6 just to and overlap.Setting like this, guarded electrode 5 can be made when pressure touch to eliminate the electric capacity produced between touch control object and the first drive electrode better, thus avoid the electric capacity that produces between touch control object and the first drive electrode to cause interference to the self-capacitance produced when pressure touch between the first drive electrode and fixed electorde 4, and then improve this touch-screen detection accuracy to pressure when pressure touch.
In the present embodiment, as shown in figures 1 and 3, touch-screen also comprises induction electrode 8, induction electrode 8 is arranged on color membrane substrates 2, public electrode 6 is also used as the second drive electrode during mutual capacitance touch-control, induction electrode 8 is positioned at the side away from public electrode 6 of guarded electrode 5, as in the present embodiment, color membrane substrates 2 comprises substrate 21, guarded electrode 5 is arranged on the side in the face of array base palte 1 of substrate 21, induction electrode 8 is arranged on the side back to array base palte 1 of substrate 21, namely the touch-screen in the present embodiment not only has pressure touch function, also there is mutual capacitance touch controllable function, and above-mentioned setting, the pressure touch mixing embedded (Hybridincell) touch-screen can be realized, thus not only save cost of manufacture and the process costs of this pressure touch screen, also improve the pressure touch precision of this pressure touch screen.
In the present embodiment, induction electrode 8 comprises multiple shape identical strip second sub-electrode 81, multiple second sub-electrode 81 is parallel to each other and arranges successively along perpendicular to the length direction of the second sub-electrode 81, and the arragement direction of the second sub-electrode 81 is perpendicular to the arragement direction of the first sub-electrode 61.Wherein, can also play when mutual capacitance touch-control with the guarded electrode 5 of the first sub-electrode 61 same shape, prevent from causing crosstalk to induction electrode 8, thus avoid when mutual capacitance touch-control, guarded electrode 5 impacts the mutual capacitance between the second drive electrode and induction electrode 8, and then pressure touch and mutual capacitance touch-control can both normally be carried out.
It should be noted that, induction electrode 8 also can be positioned at the side (as shown in Figure 4) of the close public electrode 6 of guarded electrode 5.
It should be noted that in addition, guarded electrode 5 also can be arranged on array base palte 1.As shown in Figure 5, guarded electrode 5 is arranged on the top of public electrode 6, and is folded with insulation course 9 between guarded electrode 5 and public electrode 6.
Based on the said structure of touch-screen, the present embodiment also provides a kind of driving method of this touch-screen, as shown in Figure 6, comprising: display stage and pressure touch stage, display stage and the timesharing of pressure touch stage are carried out.In the display stage, public electrode input public voltage signal Vcom, guarded electrode input public voltage signal Vcom.In the display stage, guarded electrode also can be unsettled.In the pressure touch stage, public electrode is used as the first drive electrode, the first drive electrode input pressure touch-control drive singal Vforce, and guarded electrode input fixed voltage signal is as Vcom.In the pressure touch stage, guarded electrode also can input pressure touch-control drive singal Vforce, and auxiliary first drive electrode of fixed electorde detects touch-control pressure, and fixed electorde is display stage and pressure touch stage equal ground connection.Certainly, fixed electorde also all can be connected and fixed voltage in display stage and pressure touch stage.
Wherein, in the pressure touch stage, the first drive electrode is driven simultaneously.The pressure touch stage to be inserted in a frame picture after the display of any one-row pixels terminates.
It should be noted that, the pressure touch stage also can be inserted into previous frame picture display terminate after and next frame picture display start before.
In the present embodiment, driving method also comprises the mutual capacitance touch-control stage, and display stage, pressure touch stage and the stage timesharing of mutual capacitance touch-control are carried out.In the mutual capacitance touch-control stage, public electrode is used as the second drive electrode, and the second drive electrode input mutual capacitance touch-control drive singal Vh, guarded electrode is unsettled.
Wherein, in the mutual capacitance touch-control stage, the second drive electrode is driven line by line.So can realize the mutual capacitance touch-control to this touch-screen better.
In the present embodiment, the mutual capacitance touch-control stage to be inserted in a frame picture after the display of any one-row pixels terminates.
It should be noted that, the mutual capacitance touch-control stage also can be inserted into previous frame picture display terminate after and next frame picture display start before.
Embodiment 2:
The present embodiment provides a kind of touch-screen, as different from Example 1, as shown in Figure 7, public electrode 6 comprises multiple shape identical strip first sub-electrode 61, the arrangement in matrix of multiple first sub-electrodes 61, the length direction of the first sub-electrode 61 is parallel to the line direction of matrix.And each first sub-electrode 61 connects a drive signal line 7 respectively.
Compared to embodiment 1, touch-screen in the present embodiment is equivalent to public electrode 6 to carry out Further Division, be divided into multiple by first sub-electrode 61 of in embodiment 1, setting like this, can increase further on touch-screen for carrying out the quantity of the first drive electrode of pressure touch, thus make the detection of this touch-screen to pressure touch point sensitiveer, and then this touch-screen is enable to realize multipoint pressure touch-control.
In the present embodiment, other structures of touch-screen and driving method in the same manner as in Example 1, repeat no more herein.
Embodiment 3:
The present embodiment provides a kind of touch-screen, with embodiment 1-2 unlike, the public electrode in the present embodiment is not used as the second drive electrode during mutual capacitance touch-control.Namely the touch-screen in the present embodiment only has pressure touch function, does not have mutual capacitance touch controllable function.
Correspondingly, as shown in Figure 8, in the present embodiment, the driving method of touch-screen also only has display stage and pressure touch stage, and does not have the mutual capacitance touch-control stage.
In the present embodiment other structures of touch-screen and driving method identical with embodiment 1 or 2, repeat no more herein.
The touch-screen that the beneficial effect of embodiment 1-3: embodiment 1-3 provides, by arranging guarded electrode at public electrode away from the side of fixed electorde, and the first drive electrode when making public electrode be used as pressure touch; The fixed electorde simultaneously utilizing touch-screen inside to carry is auxiliary carries out pressure touch, achieve the pressure sensitive touch-control of self-capacitance principle, not only reduce the manufacture difficulty of pressure sensitive touch-screen, improve the touch-control degree of accuracy of pressure sensitive touch-screen, and reduce production and the assembly cost of pressure sensitive touch-screen, thus pressure sensitive touch-screen can also be promoted more fast widely.
Embodiment 4:
The present embodiment provides a kind of display device, comprises the touch-screen of embodiment 1-3 in any one.
By adopting the touch-screen of embodiment 1-3 in any one, enabling this display device realize the pressure sensitive touch-control of self-capacitance principle, also reducing production and the assembly cost of this display device simultaneously.
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.
Be understandable that, the illustrative embodiments that above embodiment is only used to principle of the present utility model is described and adopts, but the utility model is not limited thereto.For those skilled in the art, when not departing from spirit of the present utility model and essence, can make various modification and improvement, these modification and improvement are also considered as protection domain of the present utility model.
Claims (10)
1. a touch-screen, comprise the liquid crystal cell that involuted by array base palte and color membrane substrates and be arranged on the fixed electorde of described array base palte away from described color membrane substrates side, it is characterized in that, also comprise guarded electrode and public electrode, described public electrode is arranged on described array base palte, described guarded electrode is positioned at the side away from described fixed electorde of described public electrode, described public electrode is used as the first drive electrode during pressure touch, described fixed electorde is corresponding with the position of described public electrode, for assisting described first drive electrode to detect touch-control pressure when pressure touch.
2. touch-screen according to claim 1, is characterized in that, described public electrode comprises multiple shape identical strip first sub-electrode, and multiple described first sub-electrode is parallel to each other and arranges successively along the length direction perpendicular to described first sub-electrode.
3. touch-screen according to claim 1, it is characterized in that, described public electrode comprises multiple shape identical strip first sub-electrode, and multiple described first sub-electrode is matrix arrangement, and the length direction of described first sub-electrode is parallel to the line direction of described matrix.
4. the touch-screen according to Claims 2 or 3, is characterized in that, each described first sub-electrode connects a drive signal line respectively.
5. touch-screen according to claim 4, is characterized in that, described fixed electorde ground connection or be connected and fixed voltage.
6. touch-screen according to claim 2, is characterized in that, described guarded electrode is arranged on described array base palte or described color membrane substrates.
7. touch-screen according to claim 6, is characterized in that, the size and shape of described guarded electrode is identical with described public electrode, described guarded electrode and described public electrode just to and overlap.
8. touch-screen according to claim 7, it is characterized in that, also comprise induction electrode, described induction electrode is arranged on described color membrane substrates, described public electrode is also used as the second drive electrode during mutual capacitance touch-control, and described induction electrode is positioned at the side of the side away from described public electrode of described guarded electrode or the close described public electrode of described guarded electrode.
9. touch-screen according to claim 8, it is characterized in that, described induction electrode comprises multiple shape identical strip second sub-electrode, multiple described second sub-electrode is parallel to each other and arranges successively along perpendicular to the length direction of described second sub-electrode, and the arragement direction of described second sub-electrode is perpendicular to the arragement direction of described first sub-electrode.
10. a display device, is characterized in that, comprises the touch-screen described in claim 1-9 any one.
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| CN201520826444.0U CN205038622U (en) | 2015-10-22 | 2015-10-22 | Touch screen and display device |
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| CN201520826444.0U CN205038622U (en) | 2015-10-22 | 2015-10-22 | Touch screen and display device |
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| CN105630251A (en) * | 2016-03-17 | 2016-06-01 | 厦门天马微电子有限公司 | Array substrate, display panel and display device |
| CN105955522A (en) * | 2016-04-20 | 2016-09-21 | 厦门天马微电子有限公司 | Touch control display and drive method thereof |
| CN105975140A (en) * | 2016-05-24 | 2016-09-28 | 厦门天马微电子有限公司 | Touching device and driving method thereof and touching display device and driving method thereof |
| CN106125980A (en) * | 2016-06-22 | 2016-11-16 | 南昌欧菲光科技有限公司 | Touch control display apparatus |
| CN106227376A (en) * | 2016-07-13 | 2016-12-14 | 深圳市华星光电技术有限公司 | A kind of pressure touch structure |
| CN106383607A (en) * | 2016-08-31 | 2017-02-08 | 宸盛光电有限公司 | Touch display system with pressure sensing function |
| CN106557207A (en) * | 2016-10-18 | 2017-04-05 | 友达光电股份有限公司 | Touch display panel and sensing driving method thereof |
| WO2017067304A1 (en) * | 2015-10-22 | 2017-04-27 | 京东方科技集团股份有限公司 | Touch screen and driving method therefor, and display device |
| CN107132942A (en) * | 2016-02-26 | 2017-09-05 | 鸿富锦精密工业（深圳）有限公司 | Touch control display apparatus |
| CN107179147A (en) * | 2016-03-09 | 2017-09-19 | 敦泰电子有限公司 | A kind of electronic equipment and driving method with pressure detecting function |
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| CN107562237A (en) * | 2016-07-01 | 2018-01-09 | 南昌欧菲生物识别技术有限公司 | Pressure sensitive touch screen |
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| JP2019515372A (en) * | 2016-03-31 | 2019-06-06 | シナプティクス インコーポレイテッド | Combination of transformer capacity data and absolute capacity data for touch force estimation |
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| CN106125980A (en) * | 2016-06-22 | 2016-11-16 | 南昌欧菲光科技有限公司 | Touch control display apparatus |
| CN107562237A (en) * | 2016-07-01 | 2018-01-09 | 南昌欧菲生物识别技术有限公司 | Pressure sensitive touch screen |
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| CN106383607A (en) * | 2016-08-31 | 2017-02-08 | 宸盛光电有限公司 | Touch display system with pressure sensing function |
| CN106383607B (en) * | 2016-08-31 | 2020-02-21 | 宸盛光电有限公司 | Touch display system with pressure sensing |
| CN106557207A (en) * | 2016-10-18 | 2017-04-05 | 友达光电股份有限公司 | Touch display panel and sensing driving method thereof |
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| WO2018086054A1 (en) * | 2016-11-11 | 2018-05-17 | 深圳信炜科技有限公司 | Capacitive sensor, capacitive sensing device, and electronic device |
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