CN203894514U - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
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- CN203894514U CN203894514U CN201420179184.8U CN201420179184U CN203894514U CN 203894514 U CN203894514 U CN 203894514U CN 201420179184 U CN201420179184 U CN 201420179184U CN 203894514 U CN203894514 U CN 203894514U
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Abstract
The utility model relates to the field of display, and specifically relates to a display panel and a display device. The display panel comprises an array substrate and a colorful substrate. The interior of the array substrate is provided with a first electrode and a second electrode. The interior of the colorful substrate is provided with a third electrode. The first and second electrodes are located at the same layer, are sequentially arranged at intervals in a parallel manner, and are electrically isolated from each other. The second and third electrodes are correspondingly arranged in a space. The beneficial effects of the utility model are that the display panel guarantees that a public electrode used for display and driving electrodes for touch control to be electrically isolated from each other through the rectangular cutting of an original plate-shaped public electrode; a redundant data line is employed for achieving the connection of the driving electrodes, thereby enabling the display device comprising the display panel to be good in effect of image display and higher in sensitivity of touch control.
Description
Technical field
The utility model relates to demonstration field, particularly, relates to a kind of display panel and a kind of display device that comprises this display panel.
Background technology
Touch-screen is current up-to-date information input equipment, it can realize man-machine interaction simply, conveniently, naturally, for people provide a kind of brand-new multimedia human-computer interaction method, be quick on the draw, support the advantages such as multiple point touching because it has to touch, greatly met people's vision and the enjoyment of sense of touch.
Conventionally, touch-screen at least comprises display screen for showing and the touch screen for touch-control.At present, touch-screen can be divided into according to composition structure: external hanging type touch screen (Add on Mode Touch Panel), covering surfaces formula touch screen (On Cell Touch Panel) and embedded touch screen (In Cell Touch Panel), make induction electrode Rx, drive electrode Tx in inside, surface or the outside of display screen.Although the structure difference of touch screen, has included induction electrode Rx and drive electrode Tx, and connect respectively corresponding induced signal line and drive signal line.In the process of human body touch touch screen, by the electric field change between induction electrode Rx and drive electrode Tx, thereby the touching of " perception " human body realizes touch controllable function.
As the outstanding person of current field of liquid crystal display, senior super Wei Chang conversion (ADvanced Super Dimension Switch, ADSDS, be called for short ADS) liquid crystal indicator of pattern rely on its broad visual angle, higher contrast ratio, higher resolution and more bright color present, pursued by consumer gradually.In the liquid crystal indicator of ADS pattern with touch controllable function, conventionally adopt electric capacity mutual inductance type " perception " touch-control, therefore induction electrode Rx and drive electrode Tx are set at least part of overlapping staggered form in orthogonal projection direction conventionally, but this structure is in realizing " perception ", in order to ensure normal touch control capacitance rate of change, requiring can not have too large right opposite long-pending between induction electrode Rx and drive electrode Tx, to ensure that the node capacitor between the two meets touch-control requirement.But the induction electrode Rx conventionally adopting at present and the arrangement mode of drive electrode Tx, easily cause the coupling capacitance between induction electrode Rx and drive electrode Tx excessive, affects the sensitivity of touch-control; And, induction electrode Rx conventionally along the longitudinal edge of black matrix (with regard to current color membrane substrates, the width of longitudinal edge is less than the width of horizontal edge) arrange, because narrower black matrix cannot block the figure of induction electrode Rx completely, cause occurring that induction electrode Rx shows and causes obstruction image, affects display effect in normal demonstration situation.
Therefore, how to improve the sensitivity of touch-control, improve image display effect, become technical matters urgently to be resolved hurrily at present.
Utility model content
The purpose of this utility model is to provide a kind of display panel and a kind of display device that comprises this display panel, this display panel is by arranging drive electrode and public electrode with layer, and the data line structure of utilizing redundancy makes the drive electrode electrical connection of same row, reduce the ground capacitance of drive electrode, improved touch-control sensitivity; , induction electrode is arranged in the wider rectangular coverage of black matrix meanwhile, has improved image display effect.
The technical scheme that solution the utility model technical matters adopts is a kind of display panel, this display panel comprises array base palte and color membrane substrates, wherein, in described array base palte, be provided with the first electrode and the second electrode, in described color membrane substrates, be provided with third electrode, described the first electrode and described the second electrode are located at same layer, and described the first electrode and described the second electrode be spaced and parallel setting and electrical isolation each other successively, described the second electrode and the spatially corresponding setting of described third electrode.
Preferably, described the first electrode comprises multiple being arranged in rows and the sub-electrode of mutually insulated, is electrically connected to each other, in the multiple described sub-electrode electrical isolation each other of different lines in the multiple described sub-electrode of same row; The bearing of trend of described the second electrode is identical with the row orientation of the sub-electrode of described the first electrode, and multiple described the second electrodes are electrically connected to each other.
Preferably, be electrically connected to each other by the first electrode connecting line in the multiple described sub-electrode of same row, the bearing of trend of described the first electrode connecting line is vertical with the row orientation of the sub-electrode of described the first electrode.
Preferably, between described the first electrode connecting line and described the first electrode and described the second electrode, be provided with insulation course, the region that described insulation course described the first electrode in correspondence offers insulation course via hole, the region that described the first electrode connecting line described the first electrode in correspondence is arranged with at least two branch lines that are connected in parallel, and described in this, branch line is electrically connected by described insulation course via hole with described the first electrode; The region that described the first electrode connecting line described the second electrode in correspondence only arranges a branch line, and described in this, branch line and described the second electrode are by described insulation course electrical isolation.
Preferably, described array base palte comprises many data lines, and described the first electrode connecting line is identical with the bearing of trend of described the first electrode connecting line with the setting of described data line successively interval and the bearing of trend of described data line.
Preferably, described the first electrode connecting line and described data line arrange with layer, and described the first electrode connecting line adopts identical material, in same composition technique, forms with described data line.
Preferably, in described array base palte, be also provided with grid line, described grid line and described the first electrode connecting line and described data line is arranged in a crossed manner and described array base palte is divided into multiple subpixel area, in described subpixel area, be provided with thin film transistor (TFT), in the described subpixel area of same described data line both sides, thin film transistor (TFT) diagonal angle in adjacent lines subpixel area arranges, and the source electrode of the described thin film transistor (TFT) of this diagonal angle setting is electrically connected with different described grid lines from same described data line electrical connection, its grid.
Preferably, be also provided with pixel electrode in described subpixel area, described pixel electrode is electrically connected with the drain electrode of the described thin film transistor (TFT) in subpixel area described in this; Described the first electrode and described the second electrode are arranged at the top of described pixel electrode, and described the second electrode and described pixel electrode overlapping at least partly in orthogonal projection direction.
Preferably, described color membrane substrates also comprises black matrix and color rete, described black matrix is the rectangular network being staggered to form not waited by width, described third electrode is arranged at away from black matrix one side of described color membrane substrates and is arranged on described rectangular the going up that width is larger, and multiple described third electrodes are electrically connected to each other by third electrode connecting line.
Preferably, the level interval between adjacent described the first electrode and described third electrode is the width of a described subpixel area in the direction vertical with the orientation of described the first electrode.
A kind of display device, comprises display panel, and wherein, described display panel adopts above-mentioned display panel.
The beneficial effects of the utility model are: the display panel that the utility model provides, do not increasing on the basis of technological process, by original tabular public electrode is done to rectangle dividing processing, ensure for the public electrode as demonstration use and the drive electrode electrical isolation each other of using as touch-control, and apply redundancy data line and realize the connection between drive electrode, can meet the requirement of touch controllable function and Presentation Function simultaneously, make the display device that includes this display panel there is good image display effect, and higher touch-control sensitivity.
Brief description of the drawings
Accompanying drawing is to be used to provide further understanding of the present utility model, and forms a part for instructions, is used from explanation the utility model, but does not form restriction of the present utility model with embodiment one below.In the accompanying drawings:
Fig. 1 is the cut-open view of display panel in the utility model embodiment 1;
Fig. 2 is the relative position schematic diagram of drive electrode, induction electrode and public electrode in Fig. 1;
Fig. 3 is the schematic diagram of the local amplification of A point in corresponding Fig. 2;
Fig. 4 is the connection diagram of drive electrode in the utility model embodiment 1;
Fig. 5 is the floor map of pixel distribution in the utility model embodiment 1;
Fig. 6 is the structural representation of display device in the utility model embodiment 2;
Fig. 7 is clock signal oscillogram in the utility model embodiment 2.
Wherein, description of reference numerals:
1-array base palte; 11-first substrate; 12-thin film transistor (TFT); 13-the first electrode; 131-the first electrode connecting line; 14-the second electrode; 15-insulation course via hole; 16-pixel electrode; 17-grid line; 18-data line; 2-color membrane substrates; 21-second substrate; The black matrix of 22-; The color rete of 23-; 24-third electrode; 241-third electrode connecting line; 3-liquid crystal layer; 31-liquid crystal molecule; 41-gate drivers; 42-source electrode driver; 43-electric pressure converter; 44-transmitter; 45-touch control controller.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.Should be understood that, embodiment described herein only, for description and interpretation the utility model, is not limited to the utility model.
A kind of display panel, this display panel comprises array base palte and color membrane substrates, wherein, in described array base palte, be provided with the first electrode and the second electrode, in described color membrane substrates, be provided with third electrode, described the first electrode and described the second electrode are located at same layer, and described the first electrode and described the second electrode successively interval arrange and electrical isolation each other, described the second electrode and the spatially corresponding setting of described third electrode.
A kind of display device, comprises display panel, and wherein, described display panel adopts above-mentioned display panel.
Embodiment 1:
The present embodiment provides a kind of display panel, and this display panel has embedded touch screen, can be used for the liquid crystal indicator of ADS pattern.
As shown in Figure 1, 2, this display panel comprises array base palte and color membrane substrates, wherein, array base palte 1 comprises first substrate 11 and is arranged at the first electrode 13 and second electrode 14 of first substrate 11 tops, color membrane substrates 2 comprises second substrate 21 and is arranged at the third electrode 24 of second substrate 21 tops, the first electrode 13 and the second electrode 14 are located at same layer, the first electrode 13 and the second electrode 14 be spaced and parallel setting and electrical isolation each other successively, the second electrode 14 and spatially corresponding setting of third electrode 24.In the present embodiment, the first electrode 13 can time-sharing multiplex be to show the part public electrode Vcom of use and the drive electrode Tx that touch-control is used, the second electrode 14 can be used as show use, for array base palte provides the part public electrode Vcom of common electric voltage, third electrode 24 can be used as the induction electrode Rx that touch-control is used.
As shown in Figure 2, the first electrode 13 comprises multiple being arranged in rows and the sub-electrode of mutually insulated, is electrically connected to each other, in multiple sub-electrodes electrical isolation each other of different lines in multiple sub-electrodes of same row; The bearing of trend of the second electrode 14 is identical with the row orientation of the sub-electrode of the first electrode 13, and multiple the second electrodes 14 are electrically connected to each other.In the present embodiment, orientation refer to, along a direction, sub-electrode has continuous distribution, corresponds in Fig. 2, and in the first electrode 13, the orientation of sub-electrode refers to the direction that sub-electrode is arranged along the interstitial area forming between the second adjacent electrode 14.Concrete, as shown in Figure 2, multiple sub-electrodes in same row are electrically connected to each other by the first electrode connecting line 131, the bearing of trend of the first electrode connecting line 131 vertical with the row orientation of the sub-electrode of the first electrode (the first electrode connecting line 131 shown in Fig. 2 also shows the wiring direction at edge, viewing area).
In the present embodiment, as shown in Figure 1, color membrane substrates 2 also comprises black matrix 22 and color rete 23, the network that black matrix 22 was staggered to form for rectangular (the comprising longitudinal edge and horizontal edge) do not waited by width, the width of horizontal edge is greater than the width of longitudinal edge, third electrode 24 is arranged at the top of horizontal edge and black matrix 22 1 sides away from color membrane substrates, and multiple third electrodes 24 are electrically connected to each other.As shown in Figure 2 and Figure 5, third electrode 24 also shows the wiring direction at edge, viewing area by the third electrode connecting line 241 shown in third electrode connecting line 241(Fig. 2) be electrically connected to each other.Because third electrode 24 is now arranged on the wider horizontal edge of black matrix 22, black matrix 22 can make third electrode 24 drop on completely in its orthogonal projection direction, black matrix 22 can block the figure of induction electrode Rx completely, therefore can reduce even to eliminate bad because of the obstruction to display frame of blocking normal viewing area and may cause of induction electrode.
In addition, in the display panel of the present embodiment, as shown in Figure 1, between color membrane substrates 2 and array base palte 1, be provided with liquid crystal layer 3, liquid crystal layer 3 comprises multiple liquid crystal molecules 31.
As shown in Figure 5, array base palte 1 comprises that many data lines 18, the first electrode connecting lines 131 arrange with data line 18 successively interval and the bearing of trend of data line 18 is identical with the bearing of trend of the first electrode connecting line 131.In order to simplify technique, in the preparation process of array base palte, the first electrode connecting line 131 arranges with layer with data line 18, and the first electrode connecting line 131 adopts identical material, in same composition technique, forms with data line 18.For example, the first electrode connecting line 131 can adopt the metal such as molybdenum, aluminium to form.
As shown in Figure 5, in array base palte 1, be also provided with grid line 17, grid line 17 and the first electrode connecting line 131 and data line 18 is arranged in a crossed manner and array base palte 1 is divided into multiple subpixel area, in subpixel area, being provided with thin film transistor (TFT) 12(thin film transistor (TFT) is a part for array base palte 1, in Fig. 1, do not specifically illustrate), in the subpixel area of same data line 18 both sides, thin film transistor (TFT) 12 diagonal angle settings in adjacent lines subpixel area, and the source electrode of the thin film transistor (TFT) 12 of this diagonal angle setting is electrically connected with same data line 18.Meanwhile, in order to realize the demonstration of lining by line scan, in the subpixel area of same data line 18 both sides, the grid of the thin film transistor (TFT) 12 in adjacent lines subpixel area is electrically connected from different grid lines 17.
Also be, in the present embodiment, array base palte is double grid type (Dual Gate) structure, all needing to be respectively connected respectively a data lines with the source electrode of the thin film transistor (TFT) in different lines subpixel area in single grating structure in prior art compares, in this structure, only need between two adjacent row subpixel area, a data lines be set, and this data line is electrically connected with the source electrode of thin film transistor (TFT) of the subpixel area that is arranged in its both sides respectively, therefore can (be the first electrode connecting line 131 in the present embodiment using the data line that does not connect thin film transistor (TFT) as electrode connecting line very dexterously, can be considered the data line structure of redundancy) use, and due to electrode connecting line and the same layer setting of data line, electrode connecting line adopts identical material, forms in same composition technique with data line, therefore need not additionally increase the array base palte that processing step can have been prepared this structure.
Meanwhile, it should be understood that row and column, horizontal edge and the longitudinal edge in the present embodiment is orthogonal setting and is oppositely arranged here, in actual applications its concrete direction is not limited, as long as ensure that row and column, horizontal edge and longitudinal edge are respectively orthogonal setting.
In the present embodiment, with reference to figure 5, in the subpixel area of array base palte, being also provided with pixel electrode 16(pixel electrode is a part for array base palte 1, in Fig. 1, does not specifically illustrate), pixel electrode 16 is electrically connected with the drain electrode of the thin film transistor (TFT) 12 in this subpixel area; The first electrode 13 and the second electrode 14 are arranged at the top of pixel electrode 16, and the second electrode 14 is overlapping at least partly in orthogonal projection direction with pixel electrode 16.In the present embodiment, pixel electrode 16 is slit-shaped.In the present embodiment, second electrode 14 as public electrode Vcom can cover multiple subpixel area, and, the second electrode 14 is a part of public electrode, the first electrode 13 is another part public electrode in displaying time section, and one of the common formation of this two parts public electrode approaches plate electrode layer.In the present embodiment, together with public electrode and pixel electrode, electric field is offered to the liquid crystal layer 3 being clipped between the two; And drive liquid crystal molecule 31 according to the current potential on the pixel electrode being increased in each subpixel area, show thereby realize image.Because public electrode and pixel electrode 16 are all arranged in array base palte 1, therefore, the electric field that the electric field that can produce by gap electrode edge and gap electrode layer and plate electrode interlayer produce forms multi-dimensional electric field.
Hold and be intelligiblely, in thin film transistor (TFT) owing to containing as the grid of control end and as the source/drain electrode of defeated entry/exit end, for ensureing the normal work of each port, between grid and source/drain electrode, gate insulation layer can be provided with, between thin film transistor (TFT) and pixel electrode, passivation layer or flatness layer can be provided with.Accordingly, in the present embodiment, between the first electrode connecting line 131 and the first electrode 13 and the second electrode 14, be provided with insulation course (omit in Fig. 4,5 and not shown), the region that insulation course the first electrode 13 in correspondence offers insulation course via hole 15(Via Hole), the region that the first electrode connecting line 131 the first electrode 13 in correspondence is arranged with at least two branch lines that are connected in parallel, and this branch line is electrically connected by insulation course via hole 15 with the first electrode 13; The region that the first electrode connecting line 131 the second electrode 14 in correspondence only arranges a branch line, and this branch line and the second electrode 14 are by insulation course electrical isolation.As shown in Figure 4, the first electrode 13(drive electrode Tx at the first electrode connecting line 131 in correspondence) region, use the connected mode (3 branch lines are only shown in Fig. 4) of region-wide conduction mode or many branch lines, the inner resistance of drive electrode Tx own is reduced; And and pass through the second electrode 14(public electrode Vcom in correspondence) region, be only electrically connected with one or little root branch line, to reduce the ground capacitance of drive electrode Tx.In addition, in Fig. 4, when being electrically connected with drive electrode Tx, only passes through on each branch line an insulation course via hole 15; Certainly, also can be as shown in Figure 5, when being electrically connected with drive electrode Tx, each branch line by two insulation course via holes 15, even passes through more insulation course via hole.
Here it should be understood that, insulation course between the first electrode 13 and the second electrode 14 and the first electrode connecting line 131 can play the effect of electricity isolation, and generally adopt transparent material to form, for example adopt the formation such as Si oxide, silicon nitride, hafnium oxide, silicon oxides of nitrogen or aluminum oxide, because the structure of these layers is same as the prior art with formation technique, therefore repeat no more here; , form because these insulation courses generally adopt transparent material meanwhile, can not cause obstruction to the observation of the planimetric map in Fig. 4,5, the signal of therefore omitting insulation course in Fig. 4,5 floor map.
As shown in Figure 3, in the local enlarged diagram that corresponding A is ordered in Fig. 2, the first electrode 13(drive electrode Tx) and third electrode 24(induction electrode Rx) between the width of level interval GAP, directly affect touch control capacitance rate of change.Preferably, the level interval between adjacent the first electrode 13 and third electrode 24 is the width of a subpixel area in the direction vertical with the orientation of the first electrode 13.In actual applications, in ensureing touch control capacitance rate of change, can adjust suitable GAP width, thereby be met the rate of change of requirement.Meanwhile, long-pending owing to not forming direct right opposite between drive electrode Tx and induction electrode Rx, therefore can reduce to greatest extent the coupling capacitance between drive electrode Tx and induction electrode Rx, improve touch-control sensitivity.
The driving method of display panel in the present embodiment, based on the structure of above-mentioned display panel, this display panel comprises array base palte and color membrane substrates, in array base palte, be provided with the first electrode and the second electrode, in color membrane substrates, be provided with third electrode, the first electrode and the second electrode are located at same layer, the first electrode and the second electrode be spaced and parallel setting and electrical isolation each other successively, the second electrode and spatially corresponding setting of third electrode, it is to show the part public electrode of use and the drive electrode that touch-control is used that driving method comprises the first electrode time-sharing multiplex.
The same structure based on above-mentioned display panel, the first electrode comprises multiple being arranged in rows and the sub-electrode of mutually insulated, is electrically connected to each other, in multiple sub-electrodes electrical isolation each other of different lines in multiple sub-electrodes of same row by the first electrode connecting line; Multiple the second electrodes are electrically connected to each other, and multiple third electrodes are electrically connected to each other by third electrode connecting line, and driving method comprises: in the first stage, for the first electrode and the second electrode provide common reference voltage; In subordinate phase, for providing touch-control, the first electrode drives signal, for third electrode provides touch-control sensing signal.
Because array base palte comprises many data lines, the first electrode connecting line and data line successively interval arrange; In array base palte, be also provided with grid line, grid line and the first electrode connecting line and data line is arranged in a crossed manner and array base palte is divided into multiple subpixel area, in subpixel area, be provided with thin film transistor (TFT), in the subpixel area of same data line both sides, thin film transistor (TFT) diagonal angle in adjacent lines subpixel area arranges, driving method comprises: in the first stage, source electrode outputting data signals by from same data line to the thin film transistor (TFT) of adjacent columns, the grid output scanning signal by different grid lines to the thin film transistor (TFT) of adjacent lines; In subordinate phase, to a row first electrode output drive signal, export induced signal by third electrode connecting line third electrode by the first electrode connecting line.
In above-mentioned driving method, very first time section was more than or equal to for the second time period, and very first time section and the second time period sum equal the frame period.
Compared with being platy structure with public electrode in ADS mode LCD in prior art, in the present embodiment, public electrode is the similar tabular wire-grid structure being jointly made up of the first electrode and the second electrode, in the second electrode, interval has formed multiple the first electrodes for touch-control (drive electrode Tx) of cutting apart setting, the third electrode (induction electrode Rx) of this drive electrode Tx and color membrane substrates inner side, realizes touch-control.Be designed to block pattern by the public electrode that in prior art, whole is tabular distribution, a part of square (blockage) electrode is wherein connected by longitudinal first electrode connecting line suitable with former linear position data, the drive electrode Tx using as touch-control, this drive electrode Tx be arranged at the public touch-control object that realizes of latticed induction electrode Rx in color membrane substrates; And another part square spaced apart (large square) electrode, as the public electrode Vcom that shows use, and maintains certain magnitude of voltage in the touch-control time period simultaneously between adjacent drive electrode Tx, to ensure the sensitivity of touch-control.Wherein, public electrode Vcom is consistent with the bearing of trend of induction electrode Rx, and corresponding setting on locus, to can reduce to greatest extent the coupling capacitance between drive electrode Tx and induction electrode Rx.
In brief, in the display panel of the present embodiment, arrange by adopting induction electrode Rx crosscut, drive electrode Tx rip cutting is arranged, and induction electrode Rx is arranged in the horizontal BM region that width is larger, also utilize double grid type (Dual Gate) structure to adopt spaced the first electrode connecting line (redundancy data line) to connect the thin film transistor (TFT) in adjacent two row subpixel area, the driving signal of drive electrode Tx is directly inputted by the first electrode connecting line, not only ensure to show the synchronism with common electrode signal and the input of touch-control driving signal, and greatly reduce the resistance of drive electrode Tx, ensureing under the condition of normal touch controllable function and Presentation Function, can effectively reduce the bad of the obstruction to display frame that while demonstration, induction electrode Rx may cause.
The display panel of the present embodiment, only need be on the basis of the former metallic diaphragm that is used to form public electrode, in composition technique, adopt mask plate that this metallic diaphragm is done to rectangle dividing processing, and apply redundancy data line and realize the connection between drive electrode, ensure for the public electrode as demonstration use and the drive electrode electrical isolation each other of using as touch-control, can meet the requirement of touch controllable function and Presentation Function simultaneously, and do not need to increase extra manufacturing process, not only work simplification, and easily ensure yields.
Embodiment 2:
The present embodiment provides a kind of display device, and this display device comprises the display panel in embodiment 1.The present embodiment is that example is elaborated with the liquid crystal indicator of senior super Wei Chang conversion (ADvanced Super Dimension Switch, ADSDS are called for short ADS) pattern.
Wherein, this display device can be: any product or parts with Presentation Function such as liquid crystal panel, Electronic Paper, mobile phone, panel computer, televisor, display, notebook computer, digital album (digital photo frame), navigating instrument.
In the liquid crystal indicator of this senior super dimension rotary-die type, the electric field that the electric field producing by gap electrode edge and gap electrode layer and plate electrode interlayer produce forms multi-dimensional electric field, make in liquid crystal layer between gap electrode, directly over electrode, all aligned liquid-crystal molecules can both produce rotation, thereby improved liquid crystal work efficiency and increased light transmission efficiency.Senior super dimension field switch technology can improve the picture quality of TFT-LCD product, has high resolving power, high permeability, low-power consumption, wide visual angle, high aperture, low aberration, without advantages such as water of compaction ripples (push Mura).
As shown in Figure 6, in this display device, also comprise gate drivers 41, source electrode driver 42 and touch control controller 45, gate drivers 41 is electrically connected with many grid lines 17, gate drivers 41 produces scanning voltage signal, be sent to the grid of the thin film transistor (TFT) being electrically connected with grid line 17 by grid line 17, provide sweep signal to thin film transistor (TFT) 12, the subpixel area of the thin film transistor (TFT) 12 being connected with this grid line 17 with gating; Source electrode driver 42 is electrically connected with data line 18, and source electrode driver 42 produces voltage data signal, is sent to the source electrode of the thin film transistor (TFT) 12 in the two row subpixel area that are electrically connected with this data line 18 by data line 18, obtains display picture data signal; Touch control controller 45 and the first electrode connecting line 131 are electrically connected, and touch control controller 45 produces touch-control and drives signal, is sent to the first electrode 13 being electrically connected with this first electrode connecting line 131 by the first electrode connecting line 131.
In the present embodiment, display device also comprises electric pressure converter 43, and electric pressure converter 43 is electrically connected with source electrode driver 42 and touch control controller 45 respectively.Electric pressure converter 43 is electrically connected with source electrode driver 42, the data-signal sending for reception sources driver 42; Electric pressure converter 43 is also electrically connected with the source electrode of thin film transistor (TFT) 12 by source electrode driver 42, sends data-signal for the source electrode to thin film transistor (TFT) 12; Electric pressure converter 43 is electrically connected with touch control controller 45, and touch control controller 45 obtains induced signal and sends through electric pressure converter 43 and drives signal.
Here it should be understood that, in the present embodiment touch control controller 45 simultaneously integrated the function that drives of touch-control sensing and touch-control, but, the present embodiment does not limit touch control controller 45 and is necessary for integrated form, for reducing chip cost, the touch control controller 45 in the present embodiment also can combine realization by the chip with the function that receives touch-control sensing with the chip with the function that sends touch-control driving respectively.
Play respectively touch-control effect and demonstration effect for the ease of controlling the first electrode 13 in the different time periods, preferably, as shown in Figure 6, display device also comprises transmitter 44, transmitter 44 is electrically connected with electric pressure converter 43, for sending control signal to electric pressure converter 43, and be respectively the first electrode 13 by electric pressure converter 43 in the touch-control time period touching signals is provided; Be respectively the first electrode 13 and the second electrode 14 provides public voltage signal at displaying time.
For ensureing the normal demonstration of display device, display device is divided into two time periods in the time in the frame period that shows a frame picture, as shown in Figure 7, very first time section is displaying time section, the second time period was the touch-control time period.Wherein, very first time section was more than or equal to for the second time period, and very first time section and the second time period sum equal the frame period.
In the present embodiment, electric pressure converter 43 can be by the public voltage signal from display driver chip (not shown in Fig. 6), provides to the first electrode 13 and the second electrode 14, to carry out picture disply in very first time section; And within the second time period, electric pressure converter 43 can receive by the first electrode 13(now the first electrode 13 be drive electrode Tx) and third electrode 24(now third electrode 24 be induction electrode Rx) because being subject to human body to touch the voltage different from reference voltage level obtaining, and calculate touch position coordinates through transmitter 44, to carry out touch control.That is to say, in the display device course of work, the first electrode 13 and the second electrode 14 produce electric field as public electrode and pixel electrode 16, drive liquid crystal molecule 31 to deflect, to carry out picture disply; And in the time that touching occurs human body on display panel, because the electric field forming between the first electrode 13 and third electrode 24 changes, respond to thus the generation of touching, and then reach the object of touch control.
In the driving process of the display device of the present embodiment, in very first time section, the first electrode 13 and the second electrode 14 conducts show the public electrode of use, in the time that grid line 17 provides sweep signal to thin film transistor (TFT) 12, and the thin film transistor (TFT) of different rows order conducting line by line successively in array base palte 1; Simultaneously, electric pressure converter 43 is in the case of the control signal that receives transmitter 44 and send, receive from the public voltage signal of display driver chip with from the data-signal of source electrode driver, and provide voltage data signal (GTG signal in other words) by data line 18 to the source electrode of thin film transistor (TFT) 12, provide common reference voltage to the first electrode 13 and the second electrode 14 respectively by the first electrode connecting line 131 and public electrode wire, as can be seen from Fig. 7, the DC voltage value on this time period (demonstration stage) less (3V left and right); The pixel electrode 16 being connected with the drain electrode of thin film transistor (TFT) 12 obtains electric simultaneously, overlapping at least partly in orthogonal projection direction with pixel electrode with the first electrode 13 and second electrode 14(the second electrode 14) acting in conjunction formation electric field, act on liquid crystal layer 3, drive the liquid crystal molecule 31 between array base palte 1 and color membrane substrates 2, change with the yawing moment that makes liquid crystal molecule 31, realize picture disply.
Within the second time period, the drive electrode Tx that in array base palte 1, the first electrode 13 is used as touch-control, as can be seen from Fig. 7, DC voltage value on this time period (touch-control stage) is large (7V-8V), in induction electrode Rx(Fig. 7 that third electrode 24 in color membrane substrates 2 is used as touch-control in the oscillogram of third electrode signal 1, 2 ... n-1, n represents three electrode the lining by line scan of n order), because adjacent the first electrode 13 and third electrode 24 are arranged alternately successively, and spatially intersection (does not have direct right opposite to amass) relatively, thereby form the capacitor plate of a pair of mutual inductance type, accordingly, the first electrode connecting line 131 being electrically connected with the first electrode 13 is drive signal line, the third electrode connecting line 241 being electrically connected with third electrode 24 is induced signal line, induction electrode Rx is connected with touch control controller 45 via electric pressure converter 43 by induced signal line, and drive electrode Tx is connected with touch control controller 45 via electric pressure converter 43 by drive signal line.Electric pressure converter 43 is in the case of the control signal that receives transmitter 44 and send, drive signal by drive signal line to load touch-control as the first electrode 13 of drive electrode, and detect the voltage signal that the inductance capacitance (now the first electrode 13 and third electrode 24 are respectively two pole plates of inductance capacitance) between that induced signal line returns and third electrode 24 is coupled out, in this process, while having human body contact touch screen, people's bulk electric field will act on inductance capacitance, the capacitance of inductance capacitance is changed, further make the magnitude of voltage being coupled out change, and then the voltage signal of change touch-control sensing signal wire return voltage converter 43, according to the variation of voltage signal, just can determine contact position, realize touch control.
Here it should be understood that in very first time section, on third electrode 24, be applied with very faint voltage (300mV); Simultaneously, in the second time period, voltage on the second electrode 14 remains the magnitude of voltage in very first time section, so arrange, reduce the amplitude of variation of reference voltage, because relative displaying time section of touch-control time period is shorter, utilize the inertia of liquid crystal deflecting element, make to switch showing the impact causing less at a frame image time internal cause touch-control.
In the display device providing at the present embodiment, can be by transmitter 44 and electric pressure converter 43 actings in conjunction to realize above-mentioned steps.
Here it should be understood that, in the time that human finger touches first electrode in different pixels region or third electrode, because human finger and display panel have certain contact area conventionally, make to touch and there is continuity (being generally the human body touching that is not less than induction precision), as previously mentioned, the first electrode or third electrode serve as respectively the role of drive electrode or induction electrode, have multiple during by certain regularly arranged pixel region in display device, can ensure induction electrode and the setting of drive electrode adjacent spaces, therefore, even if human body touch area is under the jurisdiction of different pixel regions, also can not affect the effect of touch-control.
For very first time section and the setting of the second time period, can and determine conditions such as response accuracy, touch-control precision according to concrete display device applications environment.For example, take frequency as example as 60Hz, display device shows that the time in frame period of a frame is 16.7ms, can choose wherein 12.7ms as displaying time section, other 4ms is as the touch-control time period, can certainly, according to suitable both durations of adjustment of processing power of IC chip of controlling use in display device, be not specifically limited at this.
This display device has good image display effect, and higher touch-control sensitivity.
Be understandable that, above embodiment is only used to principle of the present utility model is described and the illustrative embodiments that adopts, but the utility model is not limited to this.For those skilled in the art, in the situation that 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 (11)
1. a display panel, this display panel comprises array base palte and color membrane substrates, it is characterized in that, in described array base palte, be provided with the first electrode and the second electrode, in described color membrane substrates, be provided with third electrode, described the first electrode and described the second electrode are located at same layer, and described the first electrode and described the second electrode be spaced and parallel setting and electrical isolation each other successively, described the second electrode and the spatially corresponding setting of described third electrode.
2. display panel according to claim 1, it is characterized in that, described the first electrode comprises multiple being arranged in rows and the sub-electrode of mutually insulated, is electrically connected to each other, in the multiple described sub-electrode electrical isolation each other of different lines in the multiple described sub-electrode of same row; The bearing of trend of described the second electrode is identical with the row orientation of the sub-electrode of described the first electrode, and multiple described the second electrodes are electrically connected to each other.
3. display panel according to claim 2, it is characterized in that, multiple described sub-electrode in same row is electrically connected to each other by the first electrode connecting line, and the bearing of trend of described the first electrode connecting line is vertical with the row orientation of the sub-electrode of described the first electrode.
4. display panel according to claim 3, it is characterized in that, between described the first electrode connecting line and described the first electrode and described the second electrode, be provided with insulation course, the region that described insulation course described the first electrode in correspondence offers insulation course via hole, the region that described the first electrode connecting line described the first electrode in correspondence is arranged with at least two branch lines that are connected in parallel, and described in this, branch line is electrically connected by described insulation course via hole with described the first electrode; The region that described the first electrode connecting line described the second electrode in correspondence only arranges a branch line, and described in this, branch line and described the second electrode are by described insulation course electrical isolation.
5. display panel according to claim 4, it is characterized in that, described array base palte comprises many data lines, and described the first electrode connecting line is identical with the bearing of trend of described the first electrode connecting line with the setting of described data line successively interval and the bearing of trend of described data line.
6. display panel according to claim 5, is characterized in that, described the first electrode connecting line and described data line arrange with layer, and described the first electrode connecting line adopts identical material, in same composition technique, forms with described data line.
7. display panel according to claim 6, it is characterized in that, in described array base palte, be also provided with grid line, described grid line and described the first electrode connecting line and described data line is arranged in a crossed manner and described array base palte is divided into multiple subpixel area, in described subpixel area, be provided with thin film transistor (TFT), in the described subpixel area of same described data line both sides, described thin film transistor (TFT) diagonal angle in adjacent lines subpixel area arranges, and the source electrode of the described thin film transistor (TFT) that this diagonal angle arranges is electrically connected with same described data line, its grid is electrically connected from different described grid lines.
8. display panel according to claim 7, is characterized in that, is also provided with pixel electrode in described subpixel area, and described pixel electrode is electrically connected with the drain electrode of the described thin film transistor (TFT) in subpixel area described in this; Described the first electrode and described the second electrode are arranged at the top of described pixel electrode, and described the second electrode and described pixel electrode overlapping at least partly in orthogonal projection direction.
9. display panel according to claim 8, it is characterized in that, described color membrane substrates also comprises black matrix and color rete, described black matrix is the rectangular network being staggered to form not waited by width, described third electrode is arranged at away from black matrix one side of described color membrane substrates and is arranged on described rectangular the going up that width is larger, and multiple described third electrodes are electrically connected to each other by third electrode connecting line.
10. display panel according to claim 9, is characterized in that, the level interval between adjacent described the first electrode and described third electrode is the width of a described subpixel area in the direction vertical with the orientation of described the first electrode.
11. 1 kinds of display device, comprise display panel, it is characterized in that, described display panel adopts the display panel described in any one in claim 1-10.
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| CN201420179184.8U CN203894514U (en) | 2014-04-14 | 2014-04-14 | Display panel and display device |
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| CN201420179184.8U CN203894514U (en) | 2014-04-14 | 2014-04-14 | Display panel and display device |
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| CN203894514U true CN203894514U (en) | 2014-10-22 |
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| CN103955309A (en) * | 2014-04-14 | 2014-07-30 | 京东方科技集团股份有限公司 | Display panel, driving method thereof and display device |
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