CN104281306A - Touch type display device and manufacturing method thereof - Google Patents
Touch type display device and manufacturing method thereof Download PDFInfo
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- CN104281306A CN104281306A CN201310288891.0A CN201310288891A CN104281306A CN 104281306 A CN104281306 A CN 104281306A CN 201310288891 A CN201310288891 A CN 201310288891A CN 104281306 A CN104281306 A CN 104281306A
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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
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/13338—Input devices, e.g. touch panels
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
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Abstract
A touch type display device comprises a display module and a touch module coupled with the display module. The display module at least comprises a first substrate, a second substrate and a display dielectric layer located between the first substrate and the second substrate. The touch module comprises a first electrode layer, a second electrode layer and a third electrode layer, wherein the first electrode layer is provided with a plurality of first driving electrodes arranged in the first direction, the second electrode layer is provided with a plurality of second driving electrodes arranged in the second direction, the second direction intersects with the first direction, and the third electrode layer is provided with a plurality of sensing electrodes which are electrically connected with one another.
Description
Technical field
The invention relates to a kind of touch control display device and its manufacture method, and relate to a kind of display device and its manufacture method of capacitance type touch control sensing especially.
Background technology
No matter the electronic product of tool display has been modern in work disposal in study or in individual amusement and recreation, indispensable necessity, comprises Smartphone (SmartPhone), panel computer (Pad), notebook computer (Notebook), display (Monitor) to many Related products such as TVs (TV).And consumer can be more excellent except pursuing the characteristic electron of electronic product itself, as its answer speed when display effect high-quality, operation more fast, long service life and degree of stability high, functionally also expectation can be enriched and diversified more.And contact panel is also widely used on electronic product, carry out interaction with it with person easy to use.Contact panel can be arranged on the surface of display device, user can touch on the display apparatus shown apply for information with the option carrying out responding, can touching shown menu in display device to carry out selecting, the inventory of rollable option, or the input of free-format is even provided, such as draw an object on the display apparatus, such as carry out text event detection with hand-written character.
In touch control display device, if comply with the driving design of existing display screens touch-control, the large technology of resistance-type, optical profile type, condenser type and electromagnetic type four roughly can be divided into.Reliability wherein due to capacitance type touch-control panel is high, multi-point touch can be supported and need not power be touched, good user can be provided to experience, so be widely used at the consumption electronic products such as mobile phone and panel computer, is commonly use also important contact panel Driving technique at present.
If touch control display device can be divided into external hanging type (out-cell) and surface-type (on-cell) and embedded (in-cell) according to contact panel position.External hanging type touch control display apparatus refers to is not having display panel outside superposition one deck contact panel again of touch controllable function; Surface-type touch control display apparatus is the upper epidermis be added in by touch control sensor as colored filter substrate; Embedded touch display device is directly integrated in display panel structure by touch control sensor.Wherein, surface-type and embedded touch control panel, due to need not plug-in contact panel again, reduce glass and the film thickness of panel, can make that the thickness of applying electronic product is thinning, weight saving.
Figure 1A is the schematic diagram of a touch control display device.Touch control display device 1 comprises display module 11, touch-control module 13 and a control module 15.Wherein touch-control module 13 and display module 11 couple, and are positioned at display module 11 front and carry out touch control operation for user; And control module 15 can receive from touch-control module 13 signal and provide signal to drive display module 11.Figure 1B is the drive electrode of a conventional condenser touch-control module and the schematic diagram of sensing electrode.General touch control display device can provide user to carry out touch-control on touch-control sensing surface (touch sensitive surface) 130.Capacitive touch-control module has the sensing electrode 131 on many y-axis directions and the drive electrode 133 on many x-axis directions, is coupled to sensing circuit (sense circuit) 132 and driving circuit (drive circuit) 134 respectively.Driving circuit 134 sends drive singal to drive electrode 133, and sensing circuit 132 can receive the multi-point touch (multi touch) on touch-control sensing surface 130.During making be such as increase respectively in ito substrate surface be positioned at different aspects but orthogonal transparent conductors (as argyle design) using as sensing electrode 131 and drive electrode 133.The coupling capacitance between sensing electrode 131 and drive electrode 133 can be made to change when finger (with micro-electrostatic) is close or touch touch-control sensing surface 130.After carrying out data analysis, process and computing via control module 15, be converted to useful coordinate data, can touch position be judged.
But with regard to current multipoint-touch-technology, the x-y twin shaft electrode approach of drive end as shown in Figure 1B and receiving terminal, its driving method is for from top to bottom or from bottom to top sequentially to scan sequentially, and then judging by touch point according to sequential and the signal received, whole face completes scanning (Scan) and need take a long time with data analysis and calculation process.
Summary of the invention
The present invention has about a kind of touch control display device and its manufacture method, and its touch-control module has three axial electrode structures and single receiver settling signal receives, and can make the analytical calculation of one or more touch point and coordinate conversion more simplify.
According to the present invention, a kind of touch control display device is proposed, the touch-control module comprising a display module and couple with display module.Display module at least comprises a first substrate, a second substrate and the display dielectric layer between first substrate and second substrate.Touch-control module comprises: one first electrode layer, has several first drive electrode, and those first drive electrodes arrange along first direction; One the second electrode lay, has several second drive electrode, and those second drive electrodes arrange along second direction, and second direction is crossing with first direction; With one the 3rd electrode layer, have several sensing electrode, those sensing electrodes are electrically connected to each other.
In order to have better understanding, special embodiment below to above-mentioned and other aspect of the present invention, and coordinating accompanying drawing, being described in detail below:
Accompanying drawing explanation
Figure 1A is the schematic diagram of a touch control display device.
Figure 1B is the drive electrode of a conventional condenser touch-control module and the schematic diagram of sensing electrode.
Fig. 2, it discloses the top view of a kind of touch-control module three axial electrode of an embodiment for this.
Fig. 3 is that this discloses the diagrammatic cross-section of a kind of external hanging type touch control display device of an embodiment.
Fig. 4 is that this discloses the diagrammatic cross-section of a kind of surface-type touch control display device of an embodiment.
Fig. 5 is that this discloses the diagrammatic cross-section of one hybrid (hybrid) touch control display device of an embodiment.
Fig. 6 A is that this discloses the top view of a kind of sensing electrode of an embodiment.
Fig. 6 B is the rough schematic of the passage that the sensing electrode cut-off point of Fig. 6 A is formed.
Symbol description:
1,2,3: touch control display device
11,20,30: display module
13,23,33: touch-control module
130: touch-control sensing surface
131, C: sensing electrode
133: drive electrode
132: sensing circuit
134: driving circuit
15: control module
201,301,401: first substrate
202,302,402: second substrate
204,304,404: display dielectric layer
205,305,405: frame glue (sealant)
23S, 33S: touch base plate
231,331,431: the first electrode layers
A1, A2, A3, A4 ... An: the first drive electrode
233,333,433: the second electrode lay
B1, B2, B3, B4 ... Bm: the second drive electrode
235,335,435,535: the three electrode layers
535x: the first sensing electrode line
535y: the second sensing electrode line
535p: cut-off point
C1: first passage
C2: second channel
535-L1: the first long limit of sensing electrode 535 grid
535-S1: the first minor face of sensing electrode 535 grid
535-S2: the second minor face of sensing electrode 535 grid
535-L2: the second long limit of sensing electrode 535 grid
535c: portion continuously
De direction: the bearing of trend in portion continuously
25T, 35T, 45T: upper Polarizer
25B, 35B, 45B: lower Polarizer
26,36,46: overlayer
Embodiment
The embodiment of this exposure proposes touch control display device and its manufacture method, and its touch-control module has three axial electrode structures.Need multiple receiver compared to its receiving end of traditional touch-control module, the driver module of embodiment utilizes single receiver settling signal to receive, and analytical calculation and coordinate conversion more simplify.
Embodiment related content is described in detail referring to institute's accompanying drawings.It is noted that the structure that proposes of embodiment and content are only the use illustrated, this exposure is not limited only to those described aspects for the scope of protection.Moreover the graphic content simplified in order to clearly demonstrating embodiment, the dimension scale on graphic is not drawn according to actual product equal proportion, therefore not as the use of this exposure of limit protection domain.
The touch control display device of embodiment, as Figure 1A, also has the display module 11 and touch-control module 13 that couple, and control module 15 can receive from touch-control module 13 signal and provide signal to drive display module 11.Please refer to Fig. 2, it discloses the top view of a kind of touch-control module three axial electrode of an embodiment for this.Touch-control module has three other electrode layers of different layers, comprising: one first electrode layer 231, the second electrode lay 233 and the 3rd electrode layer 235.First electrode layer 231 has several first drive electrode A1, A2, A3, A4 ... An (n is positive integer), and those first drive electrodes are electrically independent and along a first direction arrangement.The second electrode lay 233 has several second drive electrode B1, B2, B3, B4 ... Bm (m is positive integer), the electrical independence of those second drive electrodes also arranges along a second direction (as x-axis direction), and second direction is crossing with first direction.3rd electrode layer 235 has the several sensing electrode C be electrically connected to each other.As shown in Figure 2, the sensing electrode C be electrically connected to each other is a short circuit (Short Circuit) state.In one enforcement, sensing electrode C arranges along a third direction.
In one enforcement, as shown in Figure 2, first drive electrode A1, A2, A3, A4 ... An is such as (first direction) arrangement along the y-axis direction, second drive electrode B1, B2, B3, B4 ... Bm is (second direction) arrangement along the x-axis direction, first direction is substantially perpendicular to second direction, and sensing electrode C then extends along the z-axis direction.First direction, second direction and third direction form the axial combination of an x-y-z tri-.In embodiment, sensing electrode C is not latticed or strip and block with limiting.
Certainly, embodiment also can change the arrangement mode of drive electrode, and such as first, second drive electrode is respectively along x-axis, the arrangement of y-axis direction.Moreover it is mutually vertical that embodiment does not limit first, second drive electrode.The orientation of first, second drive electrode can be intersect at angle, even parallel, suitable algorithm of arranging in pairs or groups also can calculate the coordinate data changing out touch position.
The embodiment of this exposure can be applicable to the touch control display device of various aspect, as the touch control display device such as external hanging type (out-cell), surface-type (on-cell), embedded (in-cell) and hybrid (hybrid), be not particularly limited the application aspect of this exposure and the position of electrode layer.
Its enforcement aspect of three layers of electrode layer of embodiment is not particularly limited.Such as the first electrode layer 231, the second electrode lay 233 and the 3rd electrode layer 235 can respectively be formed on a substrate, then its multiple substrate in combination is formed three axial electrodes together; Or three any two electrode layers of electrode layer are formed on a substrate, then form three axial electrodes together with the substrate in combination being formed with another electrode layer; Or carrying out patterning on single substrate forms three electrode layers with layering.Wherein, the arrangement that stacks of three electrode layers is not restricted to special order, can be such as that the 3rd electrode layer 235/ the second electrode lay 233/ first electrode layer 231 stacks arrangement from top to bottom, also can be that the 3rd electrode layer 235/ first electrode layer 231/ the second electrode lay 233 stacks arrangement from top to bottom.Moreover the both sides up and down of substrate all can form electrode layer, therefore also by the substrate of each for upper and lower both sides patterning one electrode layer and the substrate mounting with another electrode layer, the framework of 3 axial electrodes also can be formed.
Here the substrate of indication can be the substrate (external hanging type out-cell applies) that beyond display module, extra making belongs to touch-control module, also can be colored filter (CF) substrate of display module and electrode is formed at the back side (surface-type on-cell applies) of CF substrate, also can be positioned at display module extra making substrate or utilize thin film transistor (TFT) (TFT) substrate (embedded in-cell application) to carry out the making of electrode layer.
If observe the relative position (being the upside or the downside that are positioned at substrate) of three electrode layers with single substrate, then have 2
3=8 kinds of combinations, arrange as follows.
In embodiment, substrate is such as the made sheet material of the transparent material such as glass or macromolecule (as PET) or flexible film material.Drive electrode A1, A2, A3, A4 in first electrode layer 231, the second electrode lay 233 and the 3rd electrode layer 235 ... An and B1, B2, B3, B4 ... Bm and sensing electrode C, its material is such as metal or tin indium oxide (ITO), with metal/ITO film forming with formed through Patternized techniques such as exposure imagings.
Wherein several application aspects of embodiment are below described.
Fig. 3 is that this discloses the diagrammatic cross-section of a kind of external hanging type touch control display device of an embodiment.Touch control display device 2 at least comprises display module 20 and the touch-control module 23 coupled, and wherein touch-control module 23 is positioned at display module 20 front and carries out touch control operation for user.As shown in Figure 3, this is the aspect of external hanging type touch control display device.
In Fig. 3, display module 20 at least comprises first substrate 201, second substrate 202 and the display dielectric layer 204 between first substrate 201 and second substrate 202.In one embodiment, first substrate 201 and second substrate 202 are such as respectively a colored filter (CF) substrate and a thin film transistor (TFT) array (TFT array) substrate, display dielectric layer 204 is such as a liquid crystal layer (LC layer), frame glue (sealant) 205 is coated with around substrate viewing area, sclerosis via frame glue 205 produces and in conjunction with stress, tft array substrate is combined with CF substrate, and produces an enclosure space liquid crystal is closed in wherein.
Touch-control module 23 comprises the outside that a touch base plate 23S is positioned at display module 20, and three layers of electrode layer such as the first electrode layer 231 of embodiment, the second electrode lay 233 and the 3rd electrode layer 235 can not be positioned at the same side of touch base plate 23S with limiting, or not homonymy (namely the first electrode layer 231, the second electrode lay 233 and the 3rd electrode layer 235 wherein appoint both to lay respectively at the not homonymy of touch base plate 23S with another one).Wherein touch base plate 23S is such as be a clear glass or a transparent polymeric film material (as polyethylene terephthalate, Polyethylene Terephthalate, PET).In embodiment, the 3rd electrode layer 235 with sensing electrode C is such as that nearly touch-control surface is arranged, to maintain the sensitivity that sensing electrode C receives touching signals.As shown in Figure 3, first electrode layer 231 (drive electrode A1, A2, A3, A4 ... and the second electrode lay 233 (drive electrode B1, B2, B3, B4 An) ... Bm) be formed at the both sides up and down of touch base plate 23S, the 3rd electrode layer 235 (sensing electrode C) is then formed on the first electrode layer 231.
Certainly, the position of the also electrode layer of alterable embodiment during application, such as the first electrode layer 231 and the second electrode lay 233 are made in the same side of touch base plate 23S, the 3rd electrode layer (sensing electrode C) 235 is then positioned at the opposite side of this touch base plate.This exposure is not specially limited.Moreover, also a wherein electrode layer such as the 3rd electrode layer can be made on another touch base plate in embodiment, then combine with the touch base plate of tool two axial electrode and form three axial electrode structures.
In addition, as shown in Figure 3, touch control display device 2 more comprises Polarizer 25T on, once Polarizer 25B and an overlayer (covering layer) 26.Wherein, overlayer 26 can be positioned at the top place of touch-control module 23; its material is such as transparent protective glass or plastic cement or other transparent protection material be applicable to, and upper Polarizer 25T is between overlayer 26 and touch-control module 23, and lower Polarizer 25B is positioned at the surface of first substrate 201.Wherein, upper Polarizer 25T and lower Polarizer 25B can optionally do polarization process according to practical application aspect.
Fig. 4 is that this discloses the diagrammatic cross-section of a kind of surface-type touch control display device of an embodiment.Touch control display device 3 also comprises display module 30 and the touch-control module 33 coupled, wherein display module 30 also comprises first substrate (such as tft array substrate) 301, second substrate 302 (such as CF substrate), and the display dielectric layer 304 between first substrate 301 and second substrate 302 is as a liquid crystal layer.Be coated with frame glue 305 around substrate viewing area, an enclosure space can be produced make liquid crystal be closed in inside in conjunction with tft array substrate and CF substrate.As shown in Figure 4, the first electrode layer 331, the second electrode lay 333 and the 3rd electrode layer 335 are positioned at the dorsal part of second substrate 302, relative to the opposite side of display dielectric layer 304.Can at the upper two-layer drive electrode of patterning of CF substrate (second substrate 302) to form drive electrode A1, A2, A3, A4 during making ... An (the first electrode layer 331) and drive electrode B1, B2, B3, B4 ... Bm (the second electrode lay 233).And sensing electrode C (the 3rd electrode layer 335) is formed on a touch base plate 33S, three axle touch electrode structures of embodiment can be obtained after combination.Example structure shown in Fig. 4 is the aspect of surface-type (on-cell) touch control display device.Certainly, stacking of electrode layer sequentially can adjust, and other thin portion structure also can be done according to application demand and modify and change, and this exposure also seldom limits, as long as namely the three axle touch electrode structures that can form embodiment belong to the application aspect of this exposure this.
Electrode layer, except the above-mentioned enforcement aspect be positioned at outside display module, also can be positioned at display module.Such as the first electrode layer and the second electrode lay can be positioned at display module (as nearly first substrate place, first substrate place or between first substrate and second substrate), and the 3rd electrode layer can be positioned at second substrate dorsal part (hybrid) or also in display module (in-cell).
Fig. 5 is that this discloses the diagrammatic cross-section of one hybrid (hybrid) touch control display device of an embodiment.Wherein the display module of touch control display device 4 also comprises first substrate (such as tft array substrate) 401, second substrate 402 (such as CF substrate), and display dielectric layer 404 (as a liquid crystal layer) between first substrate 401 and second substrate 402 and frame glue 405.In one embodiment, touch-control module can comprise a newly-increased drive end conductive layer (as metal level or ITO layer) between first substrate 401 and second substrate 402, conductive layer comprises first electrode layer 431 (drive electrode A1, A2, A3, A4 ... and the second electrode lay 433 (drive electrode B1, B2, B3, B4 An) ... Bm) framework, with transmission signal; When the first electrode layer 431 crosses over the second electrode lay 433, the first metal layer in existing display module (Metal-1) or the second metal level (Metal-2) or other can be utilized to carry out changing layer process by conductive layer.Dorsal part again in second substrate 402 forms the 3rd electrode layer 435.The screen layer (shielding layer) such as switched in (In-Plane switching, IPS) display in copline directly forms the 3rd electrode layer 435, reaches the function of its receiving end (sensing electrode C).
Except newly-increased drive end conductive layer, because existing display module framework includes data signal line (data lines), signal line (gate lines) and common voltage layer (Vcom), in one embodiment, first drive electrode of the first electrode layer 431 can with several data signal lines (data lines) same layer in display module, and the second drive electrode of the second electrode lay 433 can with several signal lines (gate lines) same layer in display module.In embodiment, if first drive electrode A, the B making the first electrode layer 431 respectively with data signal line, signal line shared line, the blank time between display frame (blanking time) can be utilized to carry out signal scanning.
The drive electrode A/B that this kind is positioned at display module and the sensing electrode C be positioned at outside display module, can form three axle touch electrode structures of embodiment after combination.And this kind of example structure is the aspect of hybrid (hybrid) touch control display device.
In addition, the 3rd electrode layer 435 is except being positioned at the dorsal part of second substrate 402, and in another embodiment, the 3rd electrode layer 435 also can be positioned at display module, and this kind of example structure is the aspect of embedded (in-cell) touch control display device.Similarly, a newly-increased drive end conductive layer can be utilized to complete first electrode layer 431 (drive electrode A1, A2, A3, A4 ... and the second electrode lay 433 (drive electrode B1, B2, B3, B4 An) ... Bm) framework, with transmission signal, when the first electrode layer 431 crosses over the second electrode lay 433, the first metal layer in existing display module (Metal-1) or the second metal level (Metal-2) or other can be utilized to carry out changing layer process by conductive layer.First electrode layer 431 and the second electrode lay 433 can also be and the data signal line (data lines) under existing display module framework, signal line (gate lines) shared line.And a receiving end conductive layer (such as forming a pattern conductive net on black matrix") can be increased in display module newly to complete the framework of the 3rd electrode layer 435 (sensing electrode C); Or upper formation the 3rd electrode layer 435 of the common voltage layer (Vcom) in display module, utilize Vcom as receiving end, and then reach equal driver enable signal at any time, and do not affect the Presentation Function of display device.
In one embodiment, newly-increased drive end conductive layer and the material of receiving end conductive layer are such as be metal or tin indium oxide (ITO).
In addition, in an embodiment, the figure of the sensing electrode C of the 3rd electrode layer 435 is such as a latticed or strip and block or is designed with special pattern according to the needs of display quality.
Fig. 6 A is that this discloses the top view of a kind of sensing electrode of an embodiment.Fig. 6 B is the rough schematic of the passage that the sensing electrode cut-off point of Fig. 6 A is formed.As shown in Figure 6A, 3rd electrode layer 535 comprises several the first sensing electrode lines 535x and several the second sensing electrode lines 535y that are electrically connected to each other, arrange with y direction to be formed a sensing electrode grid in an xy plane in the x-direction respectively, and multiple intersection points (inter-section) place of the first sensing electrode line 535x and the second sensing electrode line 535y comprises several cut-off point (disconnecting points) 535p.Referring to Fig. 6 A and Fig. 6 B.Those cut-off points 535p forms several first passage (first channels) C1 and several second channel (second channels) C2, wherein first passage C1 and second channel C2 is parallel to each other and is an oblique angle relative to x direction, first passage C1 towards second channel C2 arrange and and second channel C2 in be staggered (interlaced arrangement).In embodiment, first long limit 535-L1 and the first minor face 535-S1 of those cut-off point self-inductance measurement electrode 535 grids of first passage C1 are initial, and the second minor face 535-S2 of those cut-off point self-inductance measurement electrode 535 grids of second channel C2 and the second long limit 535-L2 is initial.Wherein, sensing electrode 535 grid between first passage C1 and second channel C2 has continuous portion (continuous portion) 535c, and this continuous portion 535c is a curved shape (zigzag patten), represented by the dotted line in Fig. 6 B.The bearing of trend (the de direction indication as in Fig. 6 A, Fig. 6 B) of continuous portion 535c is an angle with the direction of first passage C1, second channel C2 in fact.
According to above-mentioned, embodiment proposes two-layer drive electrode and one deck sensing electrode, using as the drive end of touch-control module and receiving end.In embodiment, by first electrode layer 231/331/431 (first drive electrode A1, A2, A3, A4 ... and the second electrode lay 233/333/433 (second drive electrode B1, B2, B3, B4 An) ... Bm) each output one discernible signal, the 3rd electrode layer 235/335/435 (sensing electrode C) then can receive each drive electrode A1, A2, A3, A4 ... An and drive electrode B1, B2, B3, B4 ... the value of Bm.When touch-control occurs, the signal at its this touch-control place can have notable difference with signal when not contacting, and controller is again by identification touch point in the signal having a drop.Such as, when not contacting touch-control module, first drive electrode A1, A2, A3, A4 ... An, second drive electrode B1, B2, B3, B4 ... Bm exports one first signal and a secondary signal respectively, when single-point or Multi-contact touch-control module, first, second signal changes, via first, second signal changed, an arithmetic logic unit of controller via analyze and computing convertible go out the coordinate of this single-point or multiple spot position, and then identification touch point.
In one embodiment, drive electrode A1, A2, A3, A4 ... An and drive electrode B1, B2, B3, B4 ... the discernible signal of Bm be such as single or several pulse (pulse), frequency (freq), phase place (phase), string ripple, triangular wave or modulating signal or a mathematical combination signal (as orthogonal code ... Deng).This exposure is not specially limited.Such as, its detecting mode as A1 signal be frequency Freq-A1, B2 signal is frequency Freq-B2, when non-touch-control, its signal intensity detected is AmpA1, AmpB2, and when touch-control occurs, and the Strength Changes of A1 signal and B2 signal is AmpA1 ', AmpB2 ', can learn via arithmetic logic unit analysis and computing: A1, B2 intersection point is touch point, and change out its respective coordinates value.
Moreover, first drive electrode A1, A2, A3, A4 ... An and second drive electrode B1, B2, B3, B4 ... the type of drive of Bm can be drive all electrodes simultaneously; Or, simultaneously to all first drive electrode A1, A2, A3, A4 ... An carries out driving and second drive electrode B1, B2, B3, B4 ... Bm timesharing drives; Or first drive electrode A1, A2, A3, A4 ... An and second drive electrode B1, B2, B3, B4 ... the equal timesharing of Bm drives.This exposure is also seldom restricted this.If when the first drive electrode and the second drive electrode drive, then sensing electrode C side by side can receive corresponding signal simultaneously.If the first drive electrode and the second drive electrode timesharing drive, then sensing electrode C successively receives corresponding signal.
Need multiple receiver compared to its receiving end of traditional touch-control module, the touch control display device proposed of this exposure embodiment, its driver module only needs single receiver (the sensing electrode C be namely electrically connected to each other) just can reach Signal reception.Moreover, as embodiment the three axial electrode frameworks that propose, the design of first, second drive electrode can make controller obtain rapidly the xy position of one or more touch point, and in analytical calculation and coordinate conversion, comparatively known technology more simplifies.
In sum, although the present invention with preferred embodiment disclose as above, so itself and be not used to limit the present invention.Persond having ordinary knowledge in the technical field of the present invention, without departing from the spirit and scope of the present invention, when being used for a variety of modifications and variations.Therefore, protection scope of the present invention is when being as the criterion depending on those as defined in claim.
Claims (26)
1. a touch control display device, comprising:
One display module, at least comprises a first substrate, a second substrate and the display dielectric layer between this first substrate and this second substrate; With
One touch-control module, couples with this display module, and this touch-control module comprises:
One first electrode layer, has several first drive electrode, and described first drive electrode arranges along a first direction;
One the second electrode lay, has several second drive electrode, and described second drive electrode arranges along a second direction, and this second direction is crossing with this first direction; With
One the 3rd electrode layer, have several sensing electrode, described sensing electrode is electrically connected to each other.
2. touch control display device, wherein this this second direction of first direction substantial orthogonality as claimed in claim 1.
3. touch control display device as claimed in claim 1, wherein this touch-control module comprises a touch base plate, is positioned at the side of this display module.
4. touch control display device as claimed in claim 3, wherein this first electrode layer, this second electrode lay and the 3rd electrode layer are positioned at the same side of this touch base plate.
5. touch control display device as claimed in claim 3, wherein wherein both and another one lay respectively at the not homonymy of this touch base plate for this first electrode layer, this second electrode lay and the 3rd electrode layer.
6. touch control display device as claimed in claim 3, wherein this first electrode layer and this second electrode lay are positioned at the side of this touch base plate, and the 3rd electrode layer is then positioned at the opposite side of this touch base plate.
7. touch control display device as claimed in claim 1, wherein this first electrode layer, this second electrode lay and the 3rd electrode layer are positioned at the dorsal part of this second substrate, relative to the opposite side of this display dielectric layer.
8. touch control display device as claimed in claim 1, wherein this first electrode layer and this second electrode lay are between this first substrate and this second substrate.
9. touch control display device as claimed in claim 8, wherein the 3rd electrode layer is positioned at the dorsal part of this second substrate.
10. touch control display device as claimed in claim 9, wherein this display module more comprises a screen layer, and the 3rd electrode layer is formed at this screen layer place.
11. touch control display devices as claimed in claim 8, wherein this touch-control module more comprises a conductive layer between this first substrate and this second substrate, and this conductive layer comprises this first electrode layer and this second electrode lay.
12. touch control display devices as claimed in claim 8, several data signal line same layers wherein in described first drive electrode of this first electrode layer and this display module, several signal line same layers in described second drive electrode of this second electrode lay and this display module.
13. touch control display devices as claimed in claim 1, wherein this first electrode layer, this second electrode lay and the 3rd electrode layer are all between this first substrate and this second substrate.
14. touch control display devices as claimed in claim 11, wherein the material of this conductive layer is metal or tin indium oxide.
15. touch control display devices as claimed in claim 13, several data signal line same layers wherein in described first drive electrode of this first electrode layer and this display module, several signal line same layers in described second drive electrode of this second electrode lay and this display module.
16. touch control display devices as claimed in claim 13, the common voltage layer same layer wherein in the described sensing electrode of the 3rd electrode layer and this display module.
17. touch control display devices as claimed in claim 1, wherein, described sensing electrode is a latticed or strip and block.
18. touch control display devices as claimed in claim 1, when wherein not contacting this touch-control module, described first, described second drive electrode exports one first signal and a secondary signal respectively, as one or this touch-control module of Multi-contact, this first, this secondary signal change, via change this first and this secondary signal, an arithmetic logic unit can the coordinate of this single-point of identification or multiple spot position.
19. touch control display devices as claimed in claim 1, wherein drive described first drive electrode and described second drive electrode, then described sensing electrode side by side receives corresponding signal simultaneously.
20. touch control display devices as claimed in claim 1, wherein timesharing drives described first drive electrode and described second drive electrode, then described sensing electrode successively receives corresponding signal.
21. touch control display devices as claimed in claim 1, wherein said sensing electrode arranges along a third direction.
22. touch control display devices as claimed in claim 1, wherein the 3rd electrode layer comprises several the first sensing electrode lines and several the second sensing electrode lines and is electrically connected to each other, arrange with y direction to be formed a sensing electrode grid in an xy plane in the x-direction respectively, and several point of intersection of first, second sensing electrode line described comprise several cut-off point, described cut-off point forms several first passage and several second channel.
23. touch control display devices as claimed in claim 22, wherein said first passage and described second channel are parallel to each other and are an oblique angle relative to x direction, and described first passage is towards described second channel setting and with described second channel in being staggered.
24. touch control display devices as claimed in claim 23, the described cut-off point of wherein said first passage from one first long limit of this sensing electrode grid and one first minor face initial, and the described cut-off point of described second channel from one second minor face of this sensing electrode grid and one second long limit initial.
25. touch control display devices as claimed in claim 22, this sensing electrode grid between wherein said first passage and described second channel has a continuous portion, and this continuous portion is a curved shape.
26. touch control display devices as claimed in claim 1, wherein this first substrate and this second substrate are respectively a thin-film transistor array base-plate and a colored filter substrate, and this display dielectric layer is a liquid crystal layer.
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