CN105094485A - Mutual-capacitance touch control unit, touch control liquid crystal display panel and driving method - Google Patents
Mutual-capacitance touch control unit, touch control liquid crystal display panel and driving method Download PDFInfo
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- CN105094485A CN105094485A CN201510472849.3A CN201510472849A CN105094485A CN 105094485 A CN105094485 A CN 105094485A CN 201510472849 A CN201510472849 A CN 201510472849A CN 105094485 A CN105094485 A CN 105094485A
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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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
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Abstract
The invention discloses a mutual-capacitance touch control unit, a touch control liquid crystal display panel and a driving method. The mutual-capacitance touch control unit comprises a scan electrode layer, an insulation layer, an induction electrode layer and a touch control driving circuit; the scan electrode layer is provided with multiple scan electrodes; the induction electrode layer is provided with multiple induction electrodes, and each induction electrode is electrically connected with the touch control driving circuit through a touch control induction wire; each induction electrode is arranged between every two adjacent scan electrodes and does not overlap with the scan electrodes adjacent to the induction electrode; the touch control induction wires are at least partially covered with the scan electrodes; a touch control capacitor is formed between each induction electrode and the corresponding scan electrode adjacent to the induction electrode. According to the mutual-capacitance touch control unit, the interference of an external touch action to the adjacent touch control capacitor and a connecting wire of the touch control capacitor can be effectively shielded, the detection precision is improved, and meanwhile the sensitivity of the touch control unit can be improved.
Description
Technical field
The present invention relates to liquid crystal display field, particularly relate to a kind of mutual capacitance touch control unit, touch control liquid crystal panel and driving method.
Background technology
Along with the develop rapidly of lcd technology, touch control device (such as touch-screen TouchScreenPanel) is gradually in the life of people.At present, touch-screen can be divided into external hanging type touch-screen, covering surfaces formula touch-screen and In-cell touch panel according to composition structure.Wherein, In-cell touch panel makes the thickness of LCDs and cost of manufacture be minimized and be subject to the favor of people because of the inside that it can be embedded in LCDs.
In-cell touch panel mainly utilizes the position of the principle of self-capacitance or mutual capacitance to touching to identify.When human body does not touch LCD screen, the electric capacity of each self-capacitance that LCD screen inside is arranged or mutual capacitance is a fixed value, when human body touching LCD screen, each self-capacitance that LCD screen inside is arranged or mutual capacitance can superpose body capacitance on the basis of former fixing capacitance, can be judged the position of touch-control by the change of measuring capacitance.
In prior art, the touch action of human body is very large on the impact of the accuracy of the detection of capacitive touch screen.Concrete, as shown in Figure 1, touch-control target is the position at A point place, but due to touch control capacitance array and the impact of cabling of contact conductor forming each touch control capacitance, when wanting to realize triggering at A point, probably cause the value of the touch control capacitance of the position at B point place also to change simultaneously, and then produce erroneous judgement, affect touch-control effect.
To sum up, need a kind of new touch scheme badly to reduce interference, improve the accuracy of detection.
Summary of the invention
One of technical matters to be solved by this invention needs to provide a kind of new touch scheme to reduce interference, improves the accuracy of detection.
In order to solve the problems of the technologies described above, the embodiment of the application provide firstly a kind of mutual capacitance touch control unit, comprises scan electrode layer, insulation course, induction electrode layer and touch drive circuit; Described scan electrode layer is provided with multiple scan electrode, and scan electrode described in each is all electrically connected with described touch drive circuit by touch-control sweep trace; Described induction electrode layer is provided with multiple induction electrode, and induction electrode described in each is all electrically connected with described touch drive circuit by touch induction lines; Induction electrode described in each is all arranged between two adjacent described scan electrodes, and and the scan electrode be adjacent not overlapping; Described touch induction lines is covered by described scan electrode at least in part; Induction electrode described in each and be adjacent one described in form a touch control capacitance between scan electrode; Described insulation course is arranged between described scan electrode layer and described induction electrode layer; Described touch drive circuit responds to the change of described touch control capacitance by described touch induction lines and described touch-control sweep trace.
Preferably, touch control capacitance is rectangular distribution, and each scan electrode forming same row touch control capacitance is electrically connected successively, and is electrically connected with described touch drive circuit by touch-control sweep trace described in same.
Preferably, each scan electrode being positioned at same row is set to the plane electrode of integral structure.
Preferably, the touch induction lines of another touch control capacitance closed on it is all covered corresponding to the scan electrode of each touch control capacitance.
The driving method that embodiment still provides a kind of mutual capacitance touch control unit of the application, comprise: during drive cycle being divided at least two drivings, described mutual capacitance touch control unit is divided at least two touch areas corresponding during driving with described at least two; Corresponding touch area is driven respectively in successively during each driving, wherein, each touch area is each self-containedly organizes touch control capacitance more, make to correspond to continuous two drive during each group of touch control capacitance of touch area spatially spaced to prevent touching signal from producing interference in adjacent touch area.
Preferably, during driving with second during drive cycle being divided into the first driving, and during equaling described second driving during described first driving; Described mutual capacitance touch control unit is divided into the first touch area and the second touch area, and described multiple scan electrode and described multiple induction electrode all in rectangular distribution, thus form multiple touch control capacitances of ranks distribution; Described first touch area comprises all odd column touch control capacitances, and described second touch area comprises all even column touch control capacitances; During described first drives, connect the touch-control sweep trace of odd column touch control capacitance simultaneously, and scan each touch induction lines to obtain the variable quantity of touch control capacitance in described first touch area; During described second drives, connect the touch-control sweep trace of even column touch control capacitance simultaneously, and scan each touch induction lines to obtain the variable quantity of touch control capacitance in described second touch area.
On the other hand, additionally provide a kind of mutual capacitance touch control liquid crystal panel, be provided with mutual capacitance touch control unit, described mutual capacitance touch control unit comprises scan electrode layer, insulation course, induction electrode layer and touch drive circuit; Described scan electrode layer is provided with multiple scan electrode, and scan electrode described in each is all electrically connected with described touch drive circuit by touch-control sweep trace; Described induction electrode layer is provided with multiple induction electrode, and induction electrode described in each is all electrically connected with described touch drive circuit by touch induction lines; Induction electrode described in each is all arranged between two adjacent described scan electrodes, and and the scan electrode be adjacent not overlapping; At least part of being covered by described scan electrode of described touch induction lines; Induction electrode described in each and be adjacent one described in form a touch control capacitance between scan electrode; Described insulation course is arranged between described scan electrode layer and described induction electrode layer; Described touch drive circuit responds to the change of described touch control capacitance by described touch induction lines and described touch-control sweep trace.
Preferably, scan electrode layer, induction electrode layer and insulation course be arranged on filter sheet base plate polaroid and black matrix" between, touch drive circuit is bundled in top and/or the below of the viewing area of array base palte.
Preferably, scan electrode and touch-control sweep trace are arranged with layer, and induction electrode and touch induction lines are arranged with layer.
Preferably, touch control capacitance is rectangular distribution, the each scan electrode forming same row touch control capacitance is electrically connected successively, and be electrically connected with described touch drive circuit by touch-control sweep trace described in same, and the scan electrode corresponding to each touch control capacitance all covers the touch induction lines of another touch control capacitance closed on it.
Compared with prior art, the one or more embodiments in such scheme can have the following advantages or beneficial effect by tool:
By partly covering touch induction lines with scan electrode, effectively masking the interference of outside touch action to the connecting line of the touch control capacitance closed on and touch control capacitance, improve the accuracy of detection.Meanwhile, by increasing edge capacitance, the sensitivity of touch control unit is improved.
Other advantages of the present invention, target, to set forth in the following description to a certain extent with feature, and to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, or can be instructed from the practice of the present invention.Target of the present invention and other advantages can by instructionss below, claims, and in accompanying drawing, specifically noted structure realizes and obtains.
Accompanying drawing explanation
Accompanying drawing is used to provide the further understanding of technical scheme to the application or prior art, and forms a part for instructions.Wherein, the expression accompanying drawing of the embodiment of the present application and the embodiment one of the application are used from the technical scheme explaining the application, but do not form the restriction to technical scheme.
Fig. 1 is the schematic diagram that in prior art, touch-screen produces erroneous judgement;
Fig. 2 (a)-(b) is the structural representation of the mutual capacitance touch control unit of the application one embodiment, wherein Fig. 2 (b) be Fig. 2 (a) I-I ' to schematic diagram;
Fig. 3 (a)-(b) is the change schematic diagram of the distribution of the electric field line of touch control capacitance when touch action occurs;
The touch-control sweep trace of the mutual capacitance touch control unit that Fig. 4 is another embodiment of the application connect the oscillogram of signal;
Fig. 5 is the structural representation of the filter sheet base plate of the mutual capacitance touch control liquid crystal panel of the another embodiment of the application;
Fig. 6 is the structural representation of the array base palte of the mutual capacitance touch control liquid crystal panel of the another embodiment of the application.
Embodiment
Describe embodiments of the present invention in detail below with reference to drawings and Examples, to the present invention, how application technology means solve technical matters whereby, and the implementation procedure reaching relevant art effect can fully understand and implement according to this.Each feature in the embodiment of the present application and embodiment, can be combined with each other under prerequisite of not conflicting mutually, the technical scheme formed is all within protection scope of the present invention.
Fig. 2 (a)-(b) is the structural representation of the mutual capacitance touch control unit of the application one embodiment, wherein Fig. 2 (b) be Fig. 2 (a) I-I ' to schematic diagram.This mutual capacitance touch control unit comprises scan electrode layer (it being placed with multiple scan electrode 21), induction electrode layer (it being placed with multiple induction electrode 22), insulation course 23 and touch drive circuit 24.
The mutual capacitance touch control unit of the embodiment of the present application has three-decker, and wherein, scan electrode layer is positioned at the top layer of three-decker, and induction electrode layer is positioned at the bottom of three-decker, is spaced from each other between scan electrode layer and induction electrode layer by insulation course 23.Scan electrode 21 and induction electrode 22 all adopt ITO material to make, and insulation course 23 can adopt SiO
2make Deng material.Further, scan electrode 21 is not overlapping on the direction perpendicular to scan electrode layer or induction electrode layer with induction electrode 22, scan electrode 21 and all there is gap between the induction electrode 22 of its left and right sides, forms the electric capacity in rectangular arrangement by the scan electrode 21 closed on and induction electrode 22 and the gap between them.It should be noted that and can form multiple electric capacity between each induction electrode 21 and the one scan electrode 22 be adjacent, and in the embodiment of the application, with the touch control capacitance of one of them perceptually touch action.For example, as the region in Fig. 2 shown by rectangular broken line frame, the induction electrode 22 being positioned at same row can form two column capacitances with two column scan electrodes 21 of its left and right sides respectively, using scan electrode 21 and be positioned at electric capacity that the induction electrode 22 on the right side of scan electrode 21 formed as touch control capacitance in the present embodiment.
In the prior art, scan electrode and induction electrode form touch control capacitance by putting up a bridge, and there is coupling capacitance, and coupling capacitance are unfavorable for the generation of touching signals between overlapped electrode.In the embodiment of the application, touch control capacitance, based on edge capacitance, can promote the sensitivity of touch control unit.Concrete, Fig. 3 (a)-(b) is the change schematic diagram of the distribution of the electric field line of touch control capacitance when touch action occurs, as can be seen from the figure, when being formed with the region of touch control capacitance with finger touching, electric field between coupling capacitance is bound in original position more, and the electric field of edge capacitance is then more vulnerable to impact.In Fig. 3 (b), the electric field line redistribution of edge, a part concentrates on the position of finger touching, and defines electric field between finger.Said process illustrates that edge capacitance more easily reflects the change of electric capacity, and therefore, the embodiment of the application is conducive to the detectivity improving touch control capacitance, promotes the sensitivity of touch control unit.
Further as shown in Fig. 2 (a), touch drive circuit 24 provides pulse excitation signal for scan electrode 21, processes the change responding to touch control capacitance to the detection signal of the induction electrode 22 received simultaneously.When certain on touching touch control unit is a bit, the capacitive reactance in tested loop will change, and by the data after change detected, and measurement data and reference data be compared the position that can calculate touch points.In the embodiment of the application, scan electrode 21 is electrically connected with touch drive circuit 24 via touch-control sweep trace 25, and induction electrode 22 is electrically connected with touch drive circuit 24 via touch induction lines 26.Touch-control sweep trace 25 is arranged at scan electrode layer and induction electrode layer respectively with the wiring of touch induction lines 26, and needs to occupy larger scope.Between touch-control sweep trace 25 and touch induction lines 26, and there is coupling capacitance between above-mentioned touch-control connecting line and scan electrode 21 and/or induction electrode 22, there is stray capacitance at touch-control sweep trace 25 with between touch induction lines 26 and ground.When certain on touching touch control unit is a bit, likely cause above-mentioned coupling capacitance or stray capacitance to change, if these changes have accessed the tested loop of touch control unit, testing result will be made inaccurate, and then produce erroneous judgement, and cause maloperation.
In order to solve the problem, in the embodiment of the application, utilize scan electrode 21 to cover touch induction lines 26 at least in part, utilize the electrostatic screening of scan electrode 21 be used for eliminate touch action introduce on adjacent row another touch control capacitance produce impact.
Concrete, as shown in Fig. 2 (a), the touch induction lines 26 of another touch control capacitance closed on it is covered with the scan electrode 21 of each touch control capacitance, when the region surrounded with finger touching circular dashed line frame, be actually the position in order to trigger the touch control capacitance place formed by induction electrode 22 and scan electrode 21 in this region, but when touch induction lines 26 on the left of scan electrode 21 can not block this region, finger will interact with many touch induction lines 26, and then multiple additional electric capacity is introduced (comprising the electric capacity formed between finger and many touch induction lines) the tested loop in this region, make measurement result inaccurate, even produce erroneous judgement.After covering above-mentioned touch induction lines 26 with scan electrode 21, due to the electrostatic screening effect of scan electrode 21, the touching of finger can only cause coupling capacitance C
1and C
2change (as Suo Shi Fig. 2 (b)), and coupling capacitance C
1and C
2the detected object in tested loop, therefore can correct detection to touch action.Meanwhile, scan electrode 21 shields external electrical field, and human body electric field can not impact the touch induction lines 26 under scan electrode 21 covering, improves the accuracy of touch control unit detection.
In order to strengthen the shield effectiveness of scan electrode, in other embodiments of the application, each scan electrode 21 forming same row touch control capacitance being electrically connected each other successively, the scan electrode 21 be positioned on same row is connected as a single entity.Now, pumping signal can be applied by the scan electrode 21 of a touch-control sweep trace 25 to same row, while the shield effectiveness strengthening scan electrode 21, save wiring space, reduce electromagnetic interference (EMI).Further, in another embodiment, directly adopt the plane electrode of integral structure to form a row touch control capacitance as scan electrode 21, the effect of its electrostatic screening can be more remarkable.
What deserves to be explained is, the integral structure of scan electrode 21 refers in same optical cover process, by the design of mask plate, makes the scan electrode 21 being positioned at same row when shaping, keep the integral type state be interconnected.Therefore, the scan electrode 21 of integral structure makes simply, is conducive to the yields improving touch control unit product.
In the present embodiment, scan electrode 21 is adjacent with multiple induction electrode 21 correspondingly to be arranged, thus forming multiple touch control capacitance, the form of this one-to-many is not intended to limit the present invention, and scan electrode 21 can also adopt and induction electrode 21 patten's design one to one.
It can also be seen that from Fig. 2 (a), for the induction electrode 22 forming same row or column touch control capacitance is provided with independently touch induction lines 26 respectively, be conducive to like this simplifying touch drive circuit 24 further, improve the stability of touch control unit.
The touch control unit of the embodiment of the present application, effectively can shield the interference of outside touch action to the connecting line of the touch control capacitance closed on and touch control capacitance, improve the accuracy of detection.Meanwhile, by increasing edge capacitance, the sensitivity of touch control unit is improved.
Be understandable that, in the above-described embodiments, only with the structure of the scan electrode and induction electrode with rectangular patterns so that the solution of the present invention to be described, but this does not form the restriction of the structure to scan electrode in the present invention and induction electrode.In other embodiments of the application, scan electrode and/or induction electrode can also be other shapes of coupling mutually, such as rhombus electrode, triangular-shaped electrodes etc.
A kind of driving method driving above-mentioned mutual capacitance touch control unit is additionally provided in another embodiment of the application, timesharing driving is driven with point space combine, during drive cycle being divided at least two drivings, touch control unit is divided at least two touch areas accordingly, and each touch area is each self-containedly organizes touch control capacitance more.Corresponding touch area is driven respectively in during different drivings, each group of touch control capacitance of the touch area corresponded to during continuous two drivings is made spatially to form interval, to utilize in during the front wheel driving not driven touch area to isolate driven touch area in during front wheel driving, to prevent touching signal, interference is produced to adjacent touch area.
Concrete, in this embodiment, during driving with second during the drive cycle of mutual capacitance touch control unit is divided into the first driving, and during equaling the second driving during the first driving.Mutual capacitance touch control unit is divided into the first touch area and the second touch area, each touch area is each self-containedly organizes touch control capacitance more, wherein, first touch area comprises all odd columns (or all even columns) touch control capacitance, second touch area comprises all even columns (or all odd columns) touch control capacitance, each group of touch control capacitance namely in the first touch area and each group of touch control capacitance in the second touch area spatially spaced.Further, the first touch area and second touch area of mutual capacitance touch control unit is driven in successively during first drives and during the second driving respectively.For example, in during first drives, connect odd column (or even column) touch-control sweep trace simultaneously, and scan each touch induction lines to obtain the variable quantity of touch control capacitance in the first touch area, in during second drives, connect even column (or odd column) touch-control sweep trace simultaneously, and scan each touch induction lines to obtain the variable quantity of touch control capacitance in the second touch area.
The touch-control sweep trace of the mutual capacitance touch control unit that Fig. 4 is another embodiment of the application connect the oscillogram of signal, wherein, the pumping signal that sweep signal 1 connects for touch-control sweep trace interior during the first driving, the pumping signal that sweep signal 2 connects for touch-control sweep trace interior during the second driving.The division of touch area can see Fig. 2 (a), suppose that in figure, first row scan electrode 21 is positioned on odd column from left to right, then by first row, the 3rd row, the 5th row ... scan electrode 21 be positioned at the touch control capacitance that the induction electrode 22 on the right of it formed and be divided into the first touch area, arrange with secondary series, the 4th ... scan electrode 21 be positioned at the touch control capacitance that the induction electrode 22 on the right of it formed and be divided into the second touch area.
Driver' s timing according to Fig. 4, in during first drives, make to arrange with first row, the 3rd, the 5th row ... the touch-control sweep trace 25 that scan electrode 21 is connected connects the sweep signal 1 of high level simultaneously, make and secondary series, the 4th row ... the touch-control sweep trace 25 that scan electrode 21 is connected connects low level sweep signal 2 simultaneously, in during sweep signal 1 keeps high level, all touch induction lines 26 be connected with the induction electrode 22 in the first touch area are detected to the position of the electric capacity determining to change.Due to while detecting the touch induction lines 26 in the first touch area, fixing low level signal is applied with to the touch-control sweep trace 25 being positioned at the second touch area, be equivalent to add shielding line between each odd column, therefore can effectively prevent touch action from producing interference to the touch control capacitance on the even column closed on.After scanning during end first drives, during entering the second driving, similar during its scanning process and first drives, repeat no more.
It should be noted that, although utilize scan electrode 21 to cover touch induction lines 26 can play the effect shielding external electric field, but when applying signal to touch-control sweep trace 25 and touch induction lines 26 simultaneously, scan electrode 21 can produce interference to the touch induction lines 26 that it covers, i.e. self-interference.And adopting the driving method of the embodiment of the present application, the touch induction lines that can make scan electrode and its covering not Received signal strength at one time, effectively can prevent self-interference.This is also using scan electrode 21 and the reason of electric capacity as touch control capacitance being positioned at induction electrode 22 formation on the right side of scan electrode 21 in the present invention.
Also it should be noted that, in the first touch-control period t, the detection of the touch control capacitance of the half to touch control unit can be completed, same, the touch control capacitance of second half touch control unit detects in the second touch-control period t, and therefore, the average touch-control response time of each touch points is t, compared to the mode of carrying out according to row or column in prior art detecting, substantially reduce the average touch-control response time of touch control unit.
Driving method in the embodiment of the present application, the driving of timesharing subregion is carried out to touch control unit, effectively can prevent touch action from producing interference to the touch control capacitance closed on row, shorten the average touch-control response time of touch control unit simultaneously, improve the response speed of touch control unit.
In addition, the mutual capacitance touch control unit in previous embodiment is integrated on the substrate of display panels, mutual capacitance touch control liquid crystal panel can be obtained.Fig. 5 and Fig. 6 is respectively the filter sheet base plate of mutual capacitance touch control liquid crystal panel and the structural representation of array base palte of the another embodiment of the application, the main sensing element of mutual capacitance touch control liquid crystal panel is mutual capacitance touch control unit, and the concrete structure of touch control unit repeats no more herein.
In order to simplify the manufacturing process of substrate, be generally integrated on filter sheet base plate by mutual capacitance touch control unit, as shown in Figure 5,51 is polaroid, 52 is scan electrode layer, and 53 is insulation course, and 54 is induction electrode layer, 55 is black matrix, and 56 is colored filter, and 57 is flatness layer.Further, touch-control sweep trace and scan electrode are arranged with layer, touch induction lines and induction electrode are arranged with layer.In this embodiment, scan electrode layer, induction electrode layer and insulation course are arranged between the polaroid of filter sheet base plate and black matrix".Wherein, scan electrode and induction electrode are formed by patterning ito film layer, and insulation course adopts PECVD device coating to be formed, and above-mentioned processing step all can be implemented see existing technological process, repeats no more.Mutual capacitance contact panel in the embodiment of the present application, without the need to special processing technology, only increases some steps and just can complete on the processing procedure of existing filter sheet base plate, and technique is simple, reduces production cost.
Further, the touch drive circuit of mutual capacitance touch control unit directly binds (bonding) above the viewing area of array base palte and/or below, as shown in Figure 6.61 is array base palte, and 62 is the viewing area on array base palte, and 63 is the binding district of touch drive circuit, and 64 is the binding district of the driving circuit of array base palte, and wherein the commutative position of the driving circuit of touch drive circuit and array base palte is arranged.Be connected in the binding district 63 of array base palte 61 by touch drive circuit gold thread good after tested, the organic material after recycling thawing with defencive function covers above-mentioned touch drive circuit and encapsulates.
Contact panel technique in the embodiment of the present application is simple, stable performance, owing to touch drive circuit entirety to be bound to top and/or the below of array base palte viewing area, can to reduce the width of both sides, viewing area, realize narrow frame design.
Although the embodiment disclosed by the present invention is as above, the embodiment that described content just adopts for the ease of understanding the present invention, and be not used to limit the present invention.Technician in any the technical field of the invention; under the prerequisite not departing from the spirit and scope disclosed by the present invention; any amendment and change can be done what implement in form and in details; but scope of patent protection of the present invention, the scope that still must define with appending claims is as the criterion.
Claims (10)
1. a mutual capacitance touch control unit, comprises scan electrode layer, insulation course, induction electrode layer and touch drive circuit;
Described scan electrode layer is provided with multiple scan electrode, and scan electrode described in each is all electrically connected with described touch drive circuit by touch-control sweep trace;
Described induction electrode layer is provided with multiple induction electrode, and induction electrode described in each is all electrically connected with described touch drive circuit by touch induction lines; Induction electrode described in each is all arranged between two adjacent described scan electrodes, and and the scan electrode be adjacent not overlapping; Described touch induction lines is covered by described scan electrode at least in part; Induction electrode described in each and be adjacent one described in form a touch control capacitance between scan electrode;
Described insulation course is arranged between described scan electrode layer and described induction electrode layer;
Described touch drive circuit responds to the change of described touch control capacitance by described touch induction lines and described touch-control sweep trace.
2. mutual capacitance touch control unit according to claim 1, it is characterized in that, described touch control capacitance is rectangular distribution, and each scan electrode forming same row touch control capacitance is electrically connected successively, and is electrically connected with described touch drive circuit by touch-control sweep trace described in same.
3. mutual capacitance touch control unit according to claim 1, is characterized in that, each scan electrode being positioned at same row is set to the plane electrode of integral structure.
4. mutual capacitance touch control unit according to claim 1, is characterized in that, the scan electrode corresponding to each touch control capacitance all covers the touch induction lines of another touch control capacitance closed on it.
5. a driving method for mutual capacitance touch control unit according to any one of claim 1 to 4, comprising:
During drive cycle being divided at least two drivings, described mutual capacitance touch control unit is divided at least two touch areas corresponding during driving with described at least two;
Corresponding touch area is driven respectively in successively during each driving, wherein,
Each touch area is each self-containedly organizes touch control capacitance more, and correspond to continuous two drive during each group of touch control capacitance of touch area spatially spaced to prevent touching signal from producing interference in adjacent touch area.
6. driving method according to claim 5, is characterized in that,
During driving with second during drive cycle being divided into the first driving, and during equaling described second driving during described first driving;
Described mutual capacitance touch control unit is divided into the first touch area and the second touch area, and described multiple scan electrode and described multiple induction electrode all in rectangular distribution, thus form multiple touch control capacitances of ranks distribution; Described first touch area comprises all odd column touch control capacitances, and described second touch area comprises all even column touch control capacitances;
During described first drives, connect the touch-control sweep trace of odd column touch control capacitance simultaneously, and scan each touch induction lines to obtain the variable quantity of touch control capacitance in described first touch area;
During described second drives, connect the touch-control sweep trace of even column touch control capacitance simultaneously, and scan each touch induction lines to obtain the variable quantity of touch control capacitance in described second touch area.
7. a mutual capacitance touch control liquid crystal panel, is provided with mutual capacitance touch control unit, and described mutual capacitance touch control unit comprises scan electrode layer, insulation course, induction electrode layer and touch drive circuit;
Described scan electrode layer is provided with multiple scan electrode, and scan electrode described in each is all electrically connected with described touch drive circuit by touch-control sweep trace;
Described induction electrode layer is provided with multiple induction electrode, and induction electrode described in each is all electrically connected with described touch drive circuit by touch induction lines; Induction electrode described in each is all arranged between two adjacent described scan electrodes, and and the scan electrode be adjacent not overlapping; At least part of being covered by described scan electrode of described touch induction lines; Induction electrode described in each and be adjacent one described in form a touch control capacitance between scan electrode;
Described insulation course is arranged between described scan electrode layer and described induction electrode layer;
Described touch drive circuit responds to the change of described touch control capacitance by described touch induction lines and described touch-control sweep trace.
8. mutual capacitance touch control liquid crystal panel according to claim 7, it is characterized in that, described scan electrode layer, described induction electrode layer and described insulation course be arranged on filter sheet base plate polaroid and black matrix" between, described touch drive circuit is bundled in top and/or the below of the viewing area of array base palte.
9. mutual capacitance touch control liquid crystal panel according to claim 7, is characterized in that, described scan electrode and described touch-control sweep trace are arranged with layer, and described induction electrode and described touch induction lines are arranged with layer.
10. mutual capacitance touch control liquid crystal panel according to claim 7, it is characterized in that, described touch control capacitance is rectangular distribution, the each scan electrode forming same row touch control capacitance is electrically connected successively, and be electrically connected with described touch drive circuit by touch-control sweep trace described in same, and the scan electrode corresponding to each touch control capacitance all covers the touch induction lines of another touch control capacitance closed on it.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510472849.3A CN105094485B (en) | 2015-08-04 | 2015-08-04 | Mutual capacitance touch control unit, touch control liquid crystal panel and driving method |
| PCT/CN2015/086973 WO2017020344A1 (en) | 2015-08-04 | 2015-08-14 | Mutual-capacitance touch unit, touch liquid crystal panel, and driving method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510472849.3A CN105094485B (en) | 2015-08-04 | 2015-08-04 | Mutual capacitance touch control unit, touch control liquid crystal panel and driving method |
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| CN105094485A true CN105094485A (en) | 2015-11-25 |
| CN105094485B CN105094485B (en) | 2018-12-18 |
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| CN201510472849.3A Active CN105094485B (en) | 2015-08-04 | 2015-08-04 | Mutual capacitance touch control unit, touch control liquid crystal panel and driving method |
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| WO (1) | WO2017020344A1 (en) |
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| CN105653100A (en) * | 2016-03-31 | 2016-06-08 | 上海天马微电子有限公司 | Array substrate and manufacturing method thereof and display panel |
| CN106648271A (en) * | 2016-12-27 | 2017-05-10 | 厦门天马微电子有限公司 | Touch display panel, touch display device and driving method applied to touch display panel |
| CN107256106A (en) * | 2017-07-26 | 2017-10-17 | 武汉天马微电子有限公司 | Array base palte, liquid crystal display panel, touch control display apparatus and touch-control driving method |
| CN107390910A (en) * | 2017-02-22 | 2017-11-24 | 友达光电股份有限公司 | Touch array and driving method |
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| WO2023024178A1 (en) * | 2021-08-27 | 2023-03-02 | 武汉华星光电半导体显示技术有限公司 | Oled display panel and oled display apparatus |
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| Publication number | Publication date |
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| CN105094485B (en) | 2018-12-18 |
| WO2017020344A1 (en) | 2017-02-09 |
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