CN205103806U - Display device with pressure touch -control function - Google Patents
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- CN205103806U CN205103806U CN201520887939.4U CN201520887939U CN205103806U CN 205103806 U CN205103806 U CN 205103806U CN 201520887939 U CN201520887939 U CN 201520887939U CN 205103806 U CN205103806 U CN 205103806U
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Abstract
An embodiment of the utility model provides a display device with pressure touch -control function relates to touch -control technical field, compares prior art and can satisfy more touch -control functional requirement to solve the problem of pressure touch -control blind spot. This display device includes display panel, display panel is including setting up first electrode, the second electrode on first substrate base plate and being located the first electrode with organic material functional layer between the second electrode still includes the pressure electrode, the pressure electrode sets up the first electrode is kept away from one side of organic material functional layer, just the pressure electrode with the space has between the display panel, wherein, the pressure electrode with the first electrode is in projection on the first substrate base plate has the overlapping area. Be used for display device with pressure touch -control function.
Description
Technical field
The utility model relates to technical field of touch control, particularly relates to a kind of display device with pressure sensitivity touch controllable function.
Background technology
Along with the develop rapidly of display technique, touch-control display technique has been widely used in the various display products such as mobile phone, wrist-watch, panel computer.Wherein, organic electroluminescent LED (Organiclightemittingdiode, OLED) display has become current development trend owing to having the features such as wide viewing angle, low energy consumption, product form be thin.
At present, in touch-control display field, pressure sensitivity touch-control (forcetouch) function is mainly by arranging extra mechanism in the display to realize.Such as: in March, 2015, Apple has issued a touch control device with pressure sensitivity touch controllable function, and it settles a gravity sensing device respectively by four angles at touch control device, light to realize, in, weigh three kinds of Pressure identification functions.
But on the one hand, it only can realize three kinds of Pressure identification functions, can not meet more touch controllable function demand, Consumer's Experience is not enough; On the other hand, when touch control device size is larger, the problem of pressure sensitivity touch-control blind spot may so just be there is.
Utility model content
Embodiment of the present utility model provides a kind of display device with pressure sensitivity touch controllable function, can meet more touch controllable function demand, and solve the problem of pressure sensitivity touch-control blind spot.
For achieving the above object, embodiment of the present utility model adopts following technical scheme:
A kind of display device with pressure sensitivity touch controllable function is provided, comprise display panel, described display panel comprises the first electrode be arranged on the first underlay substrate, the second electrode and the organic material functional layer between described first electrode and described second electrode, also comprises pressure sensitivity electrode; Described pressure sensitivity electrode is arranged on the side of described first electrode away from described organic material functional layer, and has space between described pressure sensitivity electrode and described display panel; Wherein, described pressure sensitivity electrode and the projection of described first electrode on described first underlay substrate have overlapping area.
Preferably, described pressure sensitivity electrode is arranged on the second underlay substrate; Described display panel is fixed by framework with the second underlay substrate being provided with described pressure sensitivity electrode.
Preferred further, described display device also comprises metal back cover; The second underlay substrate being provided with described pressure sensitivity electrode is arranged between described metal back cover and described display panel.
Preferred further, the material of described pressure sensitivity electrode is metal material.
Preferred further, described first electrode is light tight; Described second electrode is semi-transparent.
The utility model embodiment provides a kind of display device with pressure sensitivity touch controllable function, by arranging pressure sensitivity electrode at the first electrode away from one deck of organic material functional layer, make this pressure sensitivity electrode can and the first electrode between form electric capacity, when finger presses display device, because between pressure sensitivity electrode and display panel, the width in space changes, thus the spacing of the first electrode in pressure sensitivity electrode and display panel is changed, and then the capacitance between pressure sensitivity electrode and the first electrode is changed, according to this capacitance, can corresponding pressure value, and then the touch controllable function corresponding with force value can be realized.Based on this, relative to prior art, because force value can be mapped with touch controllable function with capacitance and force value by the utility model, therefore multiple Pressure identification function can be realized as required; Wherein, be in whole display panel areas because pressure sensitivity electrode can be arranged, solve the problem of the pressure sensitivity touch-control blind spot of the larger existence of sized display.In addition, because pressure sensitivity electrode forms electric capacity between the first electrode that display panel self just has, the preparation technology of this display device can be simplified.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
A kind of structural representation with the display device of pressure sensitivity touch controllable function that Fig. 1 a provides for the utility model embodiment;
Fig. 1 b be in Fig. 1 a AA to cross-sectional schematic;
Fig. 2 a has the structural representation of the display device of pressure sensitivity touch controllable function for another kind that the utility model embodiment provides;
Fig. 2 b be in Fig. 2 a BB to cross-sectional schematic;
Fig. 3 provide for the utility model embodiment another there is the structural representation of the display device of pressure sensitivity touch controllable function;
A kind of schematic flow sheet with the driving method of the display device of pressure sensitivity touch controllable function that Fig. 4 provides for the utility model embodiment;
The schematic diagram of a kind of duration of charging that Fig. 5 provides for the utility model embodiment and magnitude of voltage corresponding relation;
The schematic diagram of the another kind of charging voltage that Fig. 6 provides for the utility model embodiment and magnitude of voltage corresponding relation.
Reference numeral:
01-display device; 02-display panel; 10-first underlay substrate; 20-first electrode; 30-organic material functional layer; 40-second electrode; 50-pressure sensitivity electrode; 60-space; 70-second underlay substrate; 80-framework.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Unless otherwise defined, technical term used herein or scientific terminology should be ordinary meaning understood by one of ordinary skill in the art." first ", " second " that use in the utility model patent application specification and claims and similar word do not represent any order, quantity or importance, and are only used to distinguish different ingredients.
The utility model embodiment provides a kind of display device 01 with pressure sensitivity touch controllable function, as shown in Fig. 1 a and Fig. 1 b Fig. 2 a and Fig. 2 b, this display device 01 comprises display panel 02, and display panel 02 comprises and is arranged on the first electrode 20, second electrode 40 on the first underlay substrate 10 and the organic material functional layer 30 between the first electrode 10 and the second electrode 40; Also comprise pressure sensitivity electrode 50; Pressure sensitivity electrode 50 is arranged on the side of the first electrode 20 away from organic material functional layer 30, and has space 60 between pressure sensitivity electrode 50 and display panel 02; Wherein, pressure sensitivity electrode 50 and the projection of the first electrode 20 on the first underlay substrate 10 have overlapping area.
Wherein, the principle realizing pressure sensitivity touch-control is: due to pressure sensitivity electrode 50 and the first electrode 20, the projection on the first underlay substrate 10 has overlapping area, and has spacing between pressure sensitivity electrode 50 and the first electrode 20, therefore, according to parallel plate capacitor formula, namely
known, electric capacity (C) can be produced between pressure sensitivity electrode 50 and the first electrode 20.Wherein, ε is constant, and S is the overlapping area between pressure sensitivity electrode 50 and the first electrode 20, and d is the spacing between pressure sensitivity electrode 50 and the first electrode 20.
Based on this, when display device 01 is not under pressure (namely touch-control not occurring), because the spacing between pressure sensitivity electrode 50 and the first electrode 20 is fixed, therefore, the two electric capacity produced is fixed.When applying certain pressure with finger in the light emission side of display device 01, space 60 between pressure sensitivity electrode 50 and display panel 02 reduces, spacing between pressure sensitivity electrode 50 and the first electrode 20 is reduced, from parallel plate capacitor formula, the electric capacity between pressure sensitivity electrode 50 and the first electrode 20 will increase.On this basis, according to the corresponding relation between the capacitance changed and force value, touch position finger institute applied pressure can be obtained, and realizes corresponding touch controllable function with this.
It should be noted that, the first, described display panel 02 comprises multiple sub-pixel unit, and each sub-pixel unit includes the first electrode 20, organic material functional layer 30 and the second electrode 40.
For organic material functional layer 30, it at least can comprise luminescent layer, on this basis in order to the efficiency of electronics and hole injection luminescent layer can be improved, the electron injecting layer that organic material functional layer 30 can also comprise electron transfer layer, hole transmission layer further and be arranged between negative electrode and electron transfer layer, and be arranged on the hole injection layer between hole transmission layer and anode.
For the first electrode 20, because it is except for except coordinating with the second electrode 40 and realizing showing, also realize pressure sensitivity touch controllable function for coordinating with pressure sensitivity electrode 50, therefore, as shown in Fig. 1 a and Fig. 2 a, the utility model embodiment preferably the first electrode 20 is strip electrode.
Wherein, the first electrode 20 and the second electrode 40 can be a printing opacity, one light tight, also can be simultaneously printing opacity, specifically not limit at this.When it is printing opacity, material can be ITO (IndiumTinOxides, indium tin metal oxide), also can be metal material (making the thinner thickness of electrode); When it is light tight, material can be metal material.
In addition, the type of described display panel 02 is not limited, it both can be AMOLED (Activematrixorganiclightemittingdiode, active organic light-emitting diode) display panel, also can be PMOLED (Passivematrixorganiclightemittingdiode, passive organic light-emitting diode) display panel.Have manufacture craft compared to AMOLED, PMOLED simple, the features such as product price is lower, are applied on small-size product, have significant advantage.
The second, do not limit the setting position of the first electrode 20, it can be arranged near the first underlay substrate 10 as shown in Figure 1 b, also can arrange away from the first underlay substrate 10 as shown in Figure 2 b.
On this basis, the material of pressure sensitivity electrode 50 is not limited, it can adopt transparent conductive material as ITO, also opaque metal material can be adopted, as molybdenum, aluminium, silver etc., specifically can determine according to its setting position, if pressure sensitivity electrode 50 is arranged on the light emission side of display panel 02, the material ensureing pressure sensitivity electrode 50 is then needed to be transparent conductive material, if pressure sensitivity electrode 50 is arranged on the non-light emission side of display panel 02, then the material of pressure sensitivity electrode 50 can be transparent conductive material, also can be metal material.
In addition, due to pressure sensitivity electrode 50 can not individualism and and there is between display panel 02 space 60, thus it must be carried on (all not shown in Fig. 1 a, 1b and Fig. 2 a, Fig. 2 b) on corresponding bearing substrate.Based on this, the utility model embodiment does not limit the bearing substrate of carrying pressure sensitivity electrode 50, can be the inherent structure except display panel 02 of display device 01, also can be the extra structure increased.
On this basis, the fixed form of the bearing substrate and display panel 02 that carry pressure sensitivity electrode 50 is not limited, as long as form space 60 between pressure sensitivity electrode 50 and display panel 02.
Wherein, when pressure sensitivity electrode 50 is arranged on the light emission side of display panel 02, above-mentioned bearing substrate need be ensured also for transparent.
3rd, do not limit the width in the space 60 between pressure sensitivity electrode 50 and display panel 02, as long as when applying certain pressure, the width in space 60 can change.Wherein, the width of indication refers to the width in the direction along vertical display device 01 here.
4th, any one pressure sensitivity electrode 50 can be corresponding with the first electrode 20 in multiple sub-pixel unit.
Correspondence is herein: this pressure sensitivity electrode 50 has overlapping area with the first electrode 20 in multiple sub-pixel unit in the projection of the first underlay substrate 10.
Wherein, in the utility model embodiment, the first electrode 20 in multiple sub-pixel unit corresponding with pressure sensitivity electrode 50 can partly overlap with pressure sensitivity electrode 50, can be also complete overlap, as long as the two has overlapping area.
The utility model embodiment provides a kind of display device 01 with pressure sensitivity touch controllable function, by arranging pressure sensitivity electrode 50 at the first electrode 20 away from one deck of organic material functional layer 30, make this pressure sensitivity electrode 50 can and the first electrode 20 between form electric capacity, when finger presses display device 01, because between pressure sensitivity electrode 50 and display panel 02, the width in space 60 changes, thus pressure sensitivity electrode 50 is changed with the spacing of the first electrode 20 in display panel 02, and then the capacitance between pressure sensitivity electrode 50 and the first electrode 20 is changed, according to this capacitance, can corresponding pressure value, and then the touch controllable function corresponding with force value can be realized.Based on this, relative to prior art, because force value can be mapped with touch controllable function with capacitance and force value by the utility model, therefore multiple Pressure identification function can be realized as required; Wherein, be in whole display panel areas because pressure sensitivity electrode 50 can be arranged, solve the problem of the pressure sensitivity touch-control blind spot of the larger existence of display device 01 size.In addition, be form electric capacity between the first electrode 20 that display panel 02 just has self due to pressure sensitivity electrode 50, the preparation technology of this display device 01 can be simplified.
Preferably, pressure sensitivity electrode 50 can be arranged on extra bearing substrate, namely, as shown in Figure 3, pressure sensitivity electrode 50 can be arranged on the second underlay substrate 70, based on this, display panel 02 can be fixed by framework 80 with the second underlay substrate 70 being provided with pressure sensitivity electrode 50.
Wherein, said frame 80 can have projection, and described projection is for placing display panel 02 and/or the second underlay substrate 70.
It should be noted that, the structure of framework 80 is not limited, as long as can fixed display panel 02 and the second underlay substrate 70.In addition, the material of framework 80 is not also limited, such as, can be made up of polycarbonate.
In the utility model embodiment, on the one hand, by pressure sensitivity electrode 50 being arranged on the second underlay substrate 70, material and the thickness of the second underlay substrate 70 can be selected as required, on the other hand, because framework 80 is than being easier to the structure making various shape, therefore the structure that framework 80 is set according to the width in the space 60 on display panel 02 and the second underlay substrate 70 between pressure sensitivity electrode 50 is easy to, display panel 02 and the second underlay substrate 70 are supported, in addition, framework 80 can also play the effect of be fixed display panel 02 and the second underlay substrate 70.
Preferred further, display device 01 also comprises metal back cover; The second underlay substrate 70 being provided with pressure sensitivity electrode 50 is arranged between metal back cover and display panel 02.
In the utility model embodiment, relatively pressure sensitivity electrode 50 is arranged on the light emission side of display device 01, is arranged on non-light emission side, can avoid impacting display.
Preferred further, the material of pressure sensitivity electrode 50 is metal material.
Wherein, the material of pressure sensitivity electrode 50 can be specifically the metal materials such as aluminium, molybdenum, silver.
In the utility model embodiment, because the resistance of metal material is lower, therefore when pressure sensitivity electrode 50 adopts metal material, higher touch-control sensitivity can be made it have.
Based on above-mentioned, preferably, the first electrode 20 is light tight, and the second electrode 40 is semi-transparent.
Wherein, the material of the first electrode 20 is metal material, and its thickness is thicker; The material of the second electrode 40 is metal material, its thinner thickness.Metal material can be silver, aluminium, molybdenum etc.
When the first electrode 20 is light tight, when second electrode 40 is semi-transparent, opaque first electrode 20, organic material functional layer 30, translucent second electrode 40 can form a microcavity, utilize the interference effect of light in microcavity can improve the output efficiency of light further.
The utility model embodiment still provides a kind of driving method of above-mentioned display device 01, and as shown in Figure 4, this driving method comprises:
S101, in the pressure touch stage, input fixed voltage signal to the first electrode 20, to pressure sensitivity electrode 50 input drive signal and receiving feedback signals, to obtain position of touch and capacitance, and obtain force value according to described capacitance.
Concrete, input fixed voltage signal by the first drive IC be connected with the first electrode 20 to the first electrode 20, by the second drive IC of being connected with pressure sensitivity electrode 50 to pressure sensitivity electrode 50 input drive signal, and pass through the second drive IC receiving feedback signals.Wherein, the first drive IC and the second drive IC can be same drive IC also can be different drive IC.
It should be noted that, the size of the fixed voltage signal of input is not limited, rationally can arrange according to the voltage in practical application needed for touch-control.In addition, there is one-to-one relationship in capacitance and force value, and this one-to-one relationship can pre-set.
S102, described force value and the typical pressure range that prestores to be compared, if force value is positioned at one of them typical pressure range, then open the function of the described display device 01 corresponding with this scope.
Wherein, typical pressure range can a function of corresponding display device 01, therefore, can arrange multiple typical pressure range, and this corresponding relation can pre-set according to concrete function items.
Herein, the function of display device 01 corresponding to typical pressure range is not limited, corresponding function can be set according to the needs of display device 01.The force value obtained by step S101 and the typical pressure range prestored contrast, if this force value is positioned at one of them typical pressure range, then realize this pressure limit corresponding function.Such as, in typical pressure range, when pressure is 0.003-0.005N, corresponding function opens, if the force value obtained by step S101 is 0.0035N, then this function opened in realization.
On this basis, step S101 can be realized by the following two kinds mode:
First kind of way: in the pressure touch stage, first drive IC inputs fixed voltage signal to the first electrode 20, second drive IC to pressure sensitivity electrode 50 input drive signal and receiving feedback signals, to obtain position of touch and the capacitance between this touch position pressure sensitivity electrode 50 and the first electrode 20; Second drive IC changes to the time of described capacitance according to standard capacitor-value, obtains the force value that this touch position capacitance is corresponding; Wherein, standard capacitor-value changes to the time of described capacitance and described force value one_to_one corresponding; Standard capacitor-value is when there is not touch-control, the capacitance between pressure sensitivity electrode 50 and the first electrode 20.
Wherein, in the pressure touch stage, if generation touch-control, spacing then between pressure sensitivity electrode 50 and the first electrode 20 will reduce, based on this, according to the actual pitch between pressure sensitivity electrode after touch-control 50 and the first electrode 20, utilize above-mentioned parallel plate capacitor formula can calculate capacitance between touch position pressure sensitivity electrode 50 and the first electrode 20.
The time needed for capacitance after standard capacitor-value changes to and touch-control occurs between pressure sensitivity electrode 50 and the first electrode 20 and force value one-to-one relationship can be stored in advance in the second drive IC.Wherein, as shown in Figure 5, in the pressure touch stage, when with less power touch control display apparatus 01, the amplitude that spacing between pressure sensitivity electrode 50 and the first electrode 20 reduces is less, the amplitude that capacitance between pressure sensitivity electrode 50 and the first electrode 20 increases is less, needs the T2 time just can complete charging and reaches corresponding voltage.When with larger power touch control display apparatus 01, the amplitude that spacing between pressure sensitivity electrode 50 and the first electrode 20 reduces is larger, the amplitude that capacitance between pressure sensitivity electrode 50 and the first electrode 20 increases is comparatively large, needs the T1 time just can complete charging and reaches corresponding voltage.Based on this, the length according to the duration of charging just can obtain corresponding force value.
Herein, and standard capacitor-value change to there is touch-control after time needed for capacitance between pressure sensitivity electrode 50 and the first electrode 20 one to one force value can be a scope, and not limit to and a point value.In like manner, the time needed for capacitance after corresponding with this force value standard capacitor-value changes to and touch-control occurs between pressure sensitivity electrode 50 and the first electrode 20 also can be a scope.
The second way: in the pressure touch stage, first drive IC inputs fixed voltage signal to the first electrode 20, second drive IC to pressure sensitivity electrode 50 input drive signal and receiving feedback signals, with obtain position of touch and the schedule time arrive time and this touch position capacitance corresponding to the magnitude of voltage of pressure sensitivity electrode 50; According to described magnitude of voltage, obtain force value; Wherein, described magnitude of voltage and described force value one_to_one corresponding.
Magnitude of voltage and force value one-to-one relationship can be stored in advance in the second drive IC.Wherein, as shown in Figure 6, when with less power touch control display apparatus 01, the amplitude that the capacitance between pressure sensitivity electrode 50 and the first electrode 20 increases is less, and its electric capacity saturation value is less, and when schedule time T arrives, the voltage of pressure sensitivity electrode 50 just can reach V1.When with larger power touch control display apparatus 01, the amplitude that the capacitance between pressure sensitivity electrode 50 and the first electrode 20 increases is comparatively large, and its electric capacity saturation value is comparatively large, and when schedule time T arrives, the voltage of pressure sensitivity electrode 50 can only reach V2.Based on this, magnitude of voltage when arriving according to schedule time T just can obtain corresponding force value.
It should be noted that, the magnitude of voltage of this touch position pressure sensitivity electrode 50 when arriving for the schedule time, when can reach according to the schedule time, the capacitance between this touch position pressure sensitivity electrode 50 and first electrode 20 obtains.
In addition, the schedule time is not limited, can according to electric capacity in actual touch-control process change need time rationally arrange.
Based on above-mentioned, described driving method also comprises: in the display stage, to the second electrode 40 input data signal.
Wherein, by the 3rd drive IC to the second electrode 40 input data signal, the 3rd drive IC can be the IC different from the first drive IC.
Because the first drive IC inputs fixing magnitude of voltage to the first electrode 20, when the 3rd drive IC inputs different data-signals to the second electrode 40, different display frame can be realized.
Preferred further, above-mentioned display stage and pressure touch stage are the same time period.
Herein, owing to no matter being display stage or pressure touch stage, fixing magnitude of voltage can be inputted to the first electrode 20, therefore, when display stage and pressure touch stage are the same time period, can can realize to the first electrode 20 input the voltage showing and can realize touch-control, input corresponding signal respectively to the second electrode 40 and pressure sensitivity electrode 50 on this basis and can realize display and pressure touch function simultaneously.Consumer's Experience can be improved like this.
The above; be only embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; change can be expected easily or replace, all should be encompassed within protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of described claim.
Claims (5)
1. one kind has the display device of pressure sensitivity touch controllable function, comprise display panel, described display panel comprises the first electrode be arranged on the first underlay substrate, the second electrode and the organic material functional layer between described first electrode and described second electrode, it is characterized in that, also comprise pressure sensitivity electrode;
Described pressure sensitivity electrode is arranged on the side of described first electrode away from described organic material functional layer, and has space between described pressure sensitivity electrode and described display panel;
Wherein, described pressure sensitivity electrode and the projection of described first electrode on described first underlay substrate have overlapping area.
2. display device according to claim 1, is characterized in that, described pressure sensitivity electrode is arranged on the second underlay substrate;
Described display panel is fixed by framework with the second underlay substrate being provided with described pressure sensitivity electrode.
3. display device according to claim 2, is characterized in that, described display device also comprises metal back cover;
The second underlay substrate being provided with described pressure sensitivity electrode is arranged between described metal back cover and described display panel.
4. the display device according to any one of claim 1-3, is characterized in that, the material of described pressure sensitivity electrode is metal material.
5. the display device according to any one of claim 1-3, is characterized in that, described first electrode is light tight; Described second electrode is semi-transparent.
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| CN106129091A (en) * | 2016-07-22 | 2016-11-16 | 京东方科技集团股份有限公司 | A kind of electroluminescence display panel and el display device |
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| CN106648266A (en) * | 2015-11-09 | 2017-05-10 | 京东方科技集团股份有限公司 | Display device with pressure sensitive touch control function and driving method |
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| CN106354326A (en) * | 2016-09-12 | 2017-01-25 | 上海天马微电子有限公司 | Display panel and display device |
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