CN101963713A - plane switching liquid crystal display (IPSLCD) with touch control function - Google Patents

plane switching liquid crystal display (IPSLCD) with touch control function Download PDF

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Publication number
CN101963713A
CN101963713A CN2009101716639A CN200910171663A CN101963713A CN 101963713 A CN101963713 A CN 101963713A CN 2009101716639 A CN2009101716639 A CN 2009101716639A CN 200910171663 A CN200910171663 A CN 200910171663A CN 101963713 A CN101963713 A CN 101963713A
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CN
China
Prior art keywords
sensing electrode
layer
conversion formula
controllable function
touch controllable
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CN2009101716639A
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Chinese (zh)
Inventor
刘振宇
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TPK Touch Solutions Inc
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TPK Touch Solutions Inc
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Priority to CN2009101716639A priority Critical patent/CN101963713A/en
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    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/13338Input devices, e.g. touch panels
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1343Electrodes
    • G02F1/134309Electrodes characterised by their geometrical arrangement
    • G02F1/134363Electrodes characterised by their geometrical arrangement for applying an electric field parallel to the substrate, i.e. in-plane switching [IPS]

Abstract

The invention relates to aplane switching liquid crystal display (IPSLCD) with a touch control function, which mainly comprises a liquid crystal layer, an active matrix transistor base plate, a color filter (CF) base plate and an electrode sensing layer, wherein the active matrix transistor base plate is provided with an electrode pair; the electrode sensing layer can be arranged at the upper part or the lower part of the CF base plate; and the electrode sensing layer can be also divided into two parts to be respectively arranged at the upper part and the lower part of the CF base plate.

Description

Plane conversion formula LCD with touch controllable function
Technical field
The present invention relates to a kind of contact panel, particularly relate to a kind of plane conversion formula LCD with touch controllable function.
Background technology
Contact panel (touch panel) or touch control screen (touch screen) are widely used in the electronic installation gradually, particularly Portable or portable electric device, for example PDA(Personal Digital Assistant) or mobile phone.Contact panel is a kind of application technology that touch technology (for example resistance-type, condenser type, optical touch control technology) is combined with display panel.Because the development of the maturation of liquid crystal display in recent years (LCD) panel technology, therefore touch technology being incorporated into display panels (that is liquid crystal touch control panel) is to become a kind of trend.
Fig. 1 shows the structure 9 of traditional liquid crystal touch control panel, as United States Patent (USP) the 6th, 259, No. 490, is entitled as " liquid crystal indicator (Liquid Crystal Display Device) " revealer of institute; Perhaps, be entitled as " light-penetrating type touching control panel and manufacture method thereof (Light transmission touch panel and manufacturing me thod thereof) " revealer of institute as U.S. Patent Publication 20070242054A1 number.As shown in the figure, this structure 9 from bottom to top comprises thin film transistor (TFT) (TFT) substrate 1, liquid crystal (LC) layer 2, counter electrode (common electrode) layer 3, look resistance (color resist, CR) layer 4, colorized optical filtering (CF) substrate 5, sensing electrode layer 6 and polaroid 7 successively.For the traditional liquid crystal touch control panel construction 9 of this kind, since its counter electrode layer 3 and sensing electrode layer 6 all the position above liquid crystal layer 2, therefore the background capacitance value (background capacitance) that is caused is very high, can cause interference to sensing electrode layer 6, reduce the touch-control usefulness and the precision of liquid crystal touch control panel.Moreover for traditional liquid crystal touch control panel construction 9, the electric field in the liquid crystal layer 12 also can have influence on the touch-control usefulness and the precision of sensing electrode layer 6.
In view of the usefulness and the precision of traditional liquid crystal touch control panel can't promote, therefore need the liquid crystal touch control panel that proposes a kind of novelty badly, in order to promote touch-control usefulness and precision.
This shows that above-mentioned existing LCD obviously still has inconvenience and defective, and demands urgently further being improved in structure and use.In order to solve the problem of above-mentioned existence, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of novel plane conversion formula LCD with touch controllable function, real one of the current important research and development problem that belongs to, also becoming the current industry utmost point needs improved target.
Summary of the invention
The objective of the invention is to, propose a kind of plane conversion formula (IPS) LCD of tool touch controllable function, its structure can promote touch-control usefulness and precision widely.In addition, the present invention has also disclosed the project organization of various sensing electrode layers.In addition, the part stratum that also disclosed LCD of the present invention substitutes or is common in the sensing electrode layer.Moreover the present invention also proposes to use barrier (shielding) layer with the electric field that the reduces liquid crystal layer image to the sensing electrode layer.
The object of the invention to solve the technical problems is to adopt following technical scheme to realize.A kind of plane conversion formula LCD (In-Plan Switching LCD) with touch controllable function according to the present invention proposes comprises: a liquid crystal layer; One active-matrix transistor base is positioned at this liquid crystal layer below; One electrode pair (electrode pair), be arranged on this active-matrix transistor base, this electrode pair comprises a pixel electrode (pixel electrode) and counter electrode (common electrode), wherein produces the rotation of a side direction horizontal component of electric field with the liquid crystal of controlling this liquid crystal layer between this pixel electrode and this counter electrode; One colorized optical filtering (CF) substrate is positioned at this liquid crystal layer top; And a sensing electrode layer, be arranged at this colored optical filtering substrates top.
Purpose of the present invention and solve its technical matters and can also be further achieved by the following technical measures.
Aforesaid plane conversion formula LCD with touch controllable function, wherein above-mentioned sensing electrode layer comprises: one first axial electrode layer, it comprises a plurality of first sensing electrodes, and first axial, be connected with first between adjacent this first sensing electrode and connect lead; And one second axial electrode layer, it comprises a plurality of second sensing electrodes, and second axial, be connected with second between adjacent this second sensing electrode and connect lead; Wherein, be electric insulation between corresponding this first connection lead and this second connection lead.
Aforesaid plane conversion formula LCD with touch controllable function, the first wherein above-mentioned axial electrode layer and this second axial electrode layer are positioned at different aspects, and have an insulation course between this first axial electrode layer and this second axial electrode layer.
Aforesaid plane conversion formula LCD with touch controllable function, the first wherein above-mentioned sensing electrode is positioned at identical aspect with second sensing electrode; First connect lead and this second overlapping region that is connected between the lead at this, the block that insulate is set, so that this first connection lead second is connected lead electric insulation each other with this.
Aforesaid plane conversion formula LCD with touch controllable function, the first wherein above-mentioned sensing electrode is positioned at identical aspect with second sensing electrode; One insulation course is used for avoiding the first connection lead and second to connect the lead overlay region because of the contact conducting; This insulation course is positioned at the first sensing electrode place and has a through hole (via hole), and first connects lead is connected with first sensing electrode by this through hole.
Aforesaid plane conversion formula LCD with touch controllable function, wherein above-mentioned sensing electrode layer comprises a plurality of separate sensing electrodes arranged side by side, and each these sensing electrode two ends is connected with lead respectively.
Aforesaid plane conversion formula LCD with touch controllable function, wherein above-mentioned sensing electrode layer comprises: a plurality of first axially separate microscler first sensing electrode arranged side by side; A plurality of second axially separate microscler second sensing electrode arranged side by side; Wherein, be electric insulation between this microscler first sensing electrode, this microscler second sensing electrode.
Aforesaid plane conversion formula LCD with touch controllable function, it more comprises a barrier (shielding) layer, between this sensing electrode layer and this liquid crystal layer.
Aforesaid plane conversion formula LCD with touch controllable function, wherein above-mentioned barrier layer is light shield layer (BM).
The object of the invention to solve the technical problems also realizes by the following technical solutions.A kind of plane conversion formula LCD (In-Plan Switching LCD) with touch controllable function according to the present invention proposes comprises: a liquid crystal layer; One active-matrix transistor base is positioned at this liquid crystal layer below; One electrode pair (electrode pair), be arranged on this active-matrix transistor base, this electrode pair comprises a pixel electrode (pixel electrode) and counter electrode (common electrode), wherein produces the rotation of a side direction horizontal component of electric field with the liquid crystal of controlling this liquid crystal layer between this pixel electrode and this counter electrode; One colorized optical filtering (CF) substrate is positioned at this liquid crystal layer top; And a sensing electrode layer, be arranged between this colored optical filtering substrates and this liquid crystal layer.
Purpose of the present invention and solve its technical matters and can also be further achieved by the following technical measures.
Aforesaid plane conversion formula LCD with touch controllable function, wherein above-mentioned sensing electrode layer comprises: one first axial electrode layer, it comprises a plurality of first sensing electrodes, and first axial, be connected with first between adjacent this first sensing electrode and connect lead; And one second axial electrode layer, it comprises a plurality of second sensing electrodes, and second axial, be connected with second between adjacent this second sensing electrode and connect lead; Wherein, be electric insulation between corresponding this first connection lead and this second connection lead.
Aforesaid plane conversion formula LCD with touch controllable function, the first wherein above-mentioned connection lead is light shield layer (BM).
Aforesaid plane conversion formula LCD with touch controllable function, the first wherein above-mentioned axial electrode layer is light shield layer (BM).
Aforesaid plane conversion formula LCD with touch controllable function, wherein above-mentioned sensing electrode layer is light shield layer (BM).
Aforesaid plane conversion formula LCD with touch controllable function, the first wherein above-mentioned axial electrode layer and this second axial electrode layer are positioned at different aspects, and have an insulation course between this first axial electrode layer and this second axial electrode layer.
Aforesaid plane conversion formula LCD with touch controllable function, wherein above-mentioned insulation course are look resistance (CR) layer.
Aforesaid plane conversion formula LCD with touch controllable function, the first wherein above-mentioned sensing electrode is positioned at identical aspect with second sensing electrode; First connect lead and this second overlapping region that is connected between the lead in this, the block that insulate is set, so that this first connection lead second is connected lead electric insulation each other with this.
Aforesaid plane conversion formula LCD with touch controllable function, wherein above-mentioned insulation block are look resistance (CR) layer.
Aforesaid plane conversion formula LCD with touch controllable function, the first wherein above-mentioned sensing electrode is positioned at identical aspect with second sensing electrode; One insulation course is used for avoiding the first connection lead and second to connect the lead overlay region because of the contact conducting; This insulation course is positioned at the first sensing electrode place and has a through hole (via hole), and first connects lead is connected with first sensing electrode by this through hole.
Aforesaid plane conversion formula LCD with touch controllable function, wherein above-mentioned insulation course are look resistance (CR) layer.
Aforesaid plane conversion formula LCD with touch controllable function, wherein above-mentioned sensing electrode layer comprises a plurality of separate sensing electrodes arranged side by side, and each these sensing electrode two ends is connected with lead respectively.
Aforesaid plane conversion formula LCD with touch controllable function, compound light shield layer of wherein above-mentioned sensing electrode (BM) and transparency conducting layer.
Aforesaid plane conversion formula LCD with touch controllable function, wherein above-mentioned sensing electrode layer comprises: a plurality of first axially separate microscler first sensing electrode arranged side by side; A plurality of second axially separate microscler second sensing electrode arranged side by side; Wherein, be electric insulation between this microscler first sensing electrode, this microscler second sensing electrode.
Aforesaid plane conversion formula LCD with touch controllable function, it more comprises a barrier (shielding) layer, between this sensing electrode layer and this liquid crystal layer.
Aforesaid plane conversion formula LCD with touch controllable function, wherein above-mentioned barrier layer is light shield layer (BM).
The object of the invention to solve the technical problems adopts following technical scheme to realize in addition again.A kind of plane conversion formula LCD (In-Plan Switching LCD) with touch controllable function according to the present invention proposes comprises: a liquid crystal layer; One active-matrix transistor base is positioned at this liquid crystal layer below; One electrode pair (electrode pair), be arranged on this active-matrix transistor base, this electrode pair comprises a pixel electrode (pixel electrode) and counter electrode (common electrode), wherein produces the rotation of a side direction horizontal component of electric field with the liquid crystal of controlling this liquid crystal layer between this pixel electrode and this counter electrode; One colorized optical filtering (CF) substrate is positioned at this liquid crystal layer top; One first sensing electrode layer is arranged between this colorized optical filtering (CF) substrate and this liquid crystal layer; And one second sensing electrode layer, be arranged at this colored optical filtering substrates top.
Purpose of the present invention and solve its technical matters and can also be further achieved by the following technical measures.
Aforesaid plane conversion formula LCD with touch controllable function, the first wherein above-mentioned sensing electrode layer: comprise one first axial electrode layer, it comprises a plurality of first sensing electrodes, and first axial, be connected with first between adjacent this first sensing electrode and connect lead; The second above-mentioned sensing electrode layer comprises one second axial electrode layer, and it comprises a plurality of second sensing electrodes, and in second axial, be connected with second between adjacent this second sensing electrode and connect lead.
Aforesaid plane conversion formula LCD with touch controllable function, the first wherein above-mentioned sensing electrode layer comprise a plurality of first axially separate microscler first sensing electrode arranged side by side; This second sensing electrode layer comprises a plurality of second axially separate microscler second sensing electrode arranged side by side.
Aforesaid plane conversion formula LCD with touch controllable function, the first wherein above-mentioned connection lead is light shield layer (BM).
Aforesaid plane conversion formula LCD with touch controllable function, the first wherein above-mentioned sensing electrode layer is light shield layer (BM).
Aforesaid plane conversion formula LCD with touch controllable function, it more comprises a barrier (shielding) layer, between this sensing electrode layer and this liquid crystal layer.
Aforesaid plane conversion formula LCD with touch controllable function, wherein above-mentioned barrier layer is light shield layer (BM).
The present invention compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, major technique of the present invention thes contents are as follows:
In order to achieve the above object, the invention provides a kind of plane conversion formula LCD, mainly comprise liquid crystal layer, active-matrix transistor base, colorized optical filtering (CF) substrate and the sensing electrode layer of (electrode pair) (that is pixel electrode and the counter electrode) that be provided with electrode pair with touch controllable function.According to first embodiment of the invention, the sensing electrode layer is arranged at the colored optical filtering substrates top.According to second embodiment of the invention, the sensing electrode layer is arranged at the colored optical filtering substrates below.According to third embodiment of the invention, the sensing electrode layer is divided into two parts and is arranged at the upper and lower of colored optical filtering substrates respectively.
By technique scheme, the plane conversion formula LCD that the present invention has touch controllable function has following advantage and beneficial effect at least: according to the features of this invention, the sensing electrode layer can comprise the multi-layered electrode layer, perhaps comprises the single-layer electrodes layer.Another feature according to the present invention, in part embodiment, the connection lead in the sensing electrode layer can and light shield layer (BM) shared, insulation course then can hinder (CR) layer with look shared.The another feature according to the present invention can use barrier layer to be subjected to the electric field influence of liquid crystal layer to avoid the sensing electrode layer.Wherein, barrier layer can and light shield layer (BM) shared.
In sum, the present invention can promote touch-control usefulness and degree of accuracy.The present invention has obvious improvement technically, and has tangible good effect, really is a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, and for above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 shows traditional liquid crystal touch control panel synoptic diagram.
Fig. 2 shows plane conversion formula (IPS) the LCD synoptic diagram with touch controllable function of first embodiment of the invention.
Fig. 3 shows plane conversion formula (IPS) the LCD synoptic diagram with touch controllable function of second embodiment of the invention.
Fig. 4 shows plane conversion formula (IPS) the LCD synoptic diagram with touch controllable function of third embodiment of the invention.
Fig. 5 A shows a kind of vertical view of electrode pattern of multi-layered electrode layer.
Fig. 5 B shows a kind of vertical view of electrode pattern of single-layer electrodes layer.
Fig. 5 C shows the vertical view of the electrode pattern of another kind of multi-layered electrode layer.
Fig. 6 A, Fig. 6 B show a kind of multi-layered electrode layer structure, and two axial sensing electrode lays respectively at different aspect synoptic diagram.
Fig. 7 A, Fig. 7 B show another kind of multi-layered electrode layer structure, and two axial sensing electrode is positioned at identical aspect synoptic diagram.
The variation structural representation of Fig. 7 C displayed map 7A.
Among Fig. 7 D displayed map 7C along the sectional view of profile line 7D-7D '.
Fig. 8 A, Fig. 8 B show another multi-layered electrode layer structure, and two axial sensing electrode also is to be positioned at identical aspect synoptic diagram.
The variation structural representation of Fig. 8 C displayed map 8A.
Among Fig. 8 D displayed map 8C along the sectional view of profile line 8D-8D '.
Fig. 9 A, Fig. 9 B show a kind of single-layer electrodes layer structural representation.
Figure 10 shows the structural representation of the touch control display that uses barrier (shielding) layer.
1: thin film transistor (TFT) (TFT) substrate 2: liquid crystal (LC) layer
3: counter electrode layer 4: look resistance (CR) layer
5: colorized optical filtering (CF) substrate 6: sensing electrode layer
7: polaroid 9: the liquid crystal touch control panel
10: thin film transistor (TFT) (TFT) substrate 12: liquid crystal (LC) layer
14: protection (OC) layer 16: look resistance (CR) layer
18: colorized optical filtering (CF) substrate
18A: colored optical filtering substrates first (on) surface
18B: colored optical filtering substrates second (descending) surface
20: sensing electrode layer 22: polaroid
24: barrier (shielding) layer 26: insulation course
100A:(first embodiment) touch control display
100B:(second embodiment) touch control display
100C:(the 3rd embodiment) touch control display
201A: the first sensing electrode 201B: first connects lead
202A: the second sensing electrode 202B: second connects lead
203A: microscler sensing electrode 203B: lead
204: insulation course 205: through hole (via hole)
206: microscler first sensing electrode 207: microscler second sensing electrode
Embodiment
Reach technological means and the effect that predetermined goal of the invention is taked for further setting forth the present invention, below in conjunction with accompanying drawing and preferred embodiment, to its embodiment of plane conversion formula LCD, structure, feature and the effect thereof that foundation the present invention proposes with touch controllable function, describe in detail as after.
Relevant aforementioned and other technology contents, characteristics and effect of the present invention can clearly present in the following detailed description that cooperates with reference to graphic preferred embodiment.By the explanation of embodiment, when can being to reach technological means that predetermined purpose takes and effect to get one more deeply and concrete understanding to the present invention, yet appended graphic only provide with reference to the usefulness of explanation, be not to be used for the present invention is limited.
See also shown in Figure 2ly, (in-plane switching, IPS) LCD 100A is hereinafter to be referred as " touch control display " to show the plane conversion formula with touch controllable function of first embodiment of the invention.Alleged in this manual orientation " on " and D score only in order to represent relative position relation; For this instructions graphic, the top of touch control display is near the beholder, and the below is then away from the beholder.The disclosed touch controllable function of the embodiment of the invention is to adopt the capacitance touching control principle, the electric capacitance change that it is produced when touching contact panel by finger or pointer, thereby sense touch location.
The structure of the disclosed touch control display of the embodiment of the invention and display mode belong to plane conversion formula (IPS), one of these different places with other mode display are: the counter electrode of plane conversion formula LCD (common electrode) layer and pixel electrode (pixel electrode) all are positioned at the below of liquid crystal (LC) layer, and the counter electrode layer of other mode LCDs and pixel electrode then are the upper and lowers that lays respectively at liquid crystal layer.According to this kind special construction of plane conversion formula LCD, its background capacitance is worth with reduction, thereby is minimized or avoids interference, thereby promote touch-control usefulness and precision for touch controllable function.
In first embodiment; as shown in Figure 2; touch control display 100A from bottom to top comprises active-matrix transistor (for example thin film transistor (TFT) (TFT)) substrate 10, liquid crystal (LC) layer 12, protection (over coating successively; OC) layer 14, look resistance (color resist, CR) layer 16, colorized optical filtering (CF) substrate 18, sensing electrode (sensing electrode) layer 20 and polaroid 22.Can insert other extra layers according to various application or functional requirement between above-mentioned each layer.Know clearly it, thin film transistor (TFT) (TFT) substrate 10 is provided with electrode pair (electrode pair), it comprises pixel electrode (pixel electrode) and counter electrode (common electrode), produces the rotation of a side direction horizontal component of electric field with the liquid crystal of control liquid crystal layer 12 between the two.As previously mentioned, this can form the display mode of plane conversion formula (IPS).Protection (OC) layer 14 mainly is that the ion for fear of look resistance layer 16 enters the pollution that liquid crystal layer 12 is caused.Protective seam 14 can use acryl resin (acrylresin), epoxy resin (epoxy resin) or other materials.Look resistance (CR) layer 16 can use polyvinyl alcohol (PVA) (Poly-vinyl alcohol, PVA), acryl pigment (or other pigment or dyestuff) to be to form red, green, blue (RGB) colored pattern.Colorized optical filtering (CF) substrate 18 is a transparency carrier, its can for glass, high molecular weight plastic material (for example polycarbonate (Polycarbonate, PC), Polyvinylchloride (Polyvinylchloride, PVC)) or other materials.Polaroid 22 can use polyvinyl alcohol (PVA) (PVA) or other materials.Structure and material as for sensing electrode layer 20 will be in subsequent detailed.
One of feature of first embodiment (Fig. 2) is: with regard to structure, sensing electrode layer 20 is to be arranged between colored optical filtering substrates 18 and the polaroid 22, that is, be positioned at colored optical filtering substrates 18 tops.Detailed it, sensing electrode layer 20 be positioned at colored optical filtering substrates 18 first (on) surperficial 18A top, look resistance (CR) layer 16 then is to be positioned at below the surperficial 18B of colored optical filtering substrates 18 second (descend).
Fig. 3 shows plane conversion formula (IPS) the LCD 100B with touch controllable function of second embodiment of the invention.In the present embodiment, touch control display 100B from bottom to top comprises active-matrix transistor (for example thin film transistor (TFT) (TFT)) substrate 10, liquid crystal (LC) layer 12, protection (OC) layer 14, sensing electrode layer 20, colorized optical filtering (CF) substrate 18 and polaroid 22 successively; And look resistance (CR) layer 16 can be positioned between protection (OC) the layer 14/ sensing electrode layer 20, can be positioned between sensing electrode layer 20/ colorized optical filtering (CF) substrate 18, also can be positioned at the inside of sensing electrode layer 20, shown in graphic each arrow.Can insert other extra layers according to various application or functional requirement between above-mentioned each layer.
One of feature of second embodiment (Fig. 3) is: with regard to structure, sensing electrode layer 20 is to be arranged between colored optical filtering substrates 18 and protection (OC) layer 14, that is, be positioned at colored optical filtering substrates 18 belows.Detailed it, sensing electrode layer 20 is to be arranged at the surperficial 18B of colored optical filtering substrates 18 second (descend) below, polaroid 22 then be arranged at colored optical filtering substrates 18 first (on) above the surperficial 18A.
Fig. 4 shows plane conversion formula (IPS) the LCD 100C of the tool touch controllable function of third embodiment of the invention.In the present embodiment, touch control display 100C from bottom to top comprises active-matrix transistor (for example thin film transistor (TFT) (TFT)) substrate 10, liquid crystal (LC) layer 12, protection (OC) layer 14, the first sensing electrode layer 20A, colorized optical filtering (CF) substrate 18, the second sensing electrode layer 20B and polaroid 22 successively; And look resistance (CR) layer 16 can be positioned between protection (OC) the layer 14/ first sensing electrode layer 20A, also can be positioned between first sensing electrode layer 20A/ colorized optical filtering (CF) substrate 18, shown in graphic each arrow.Can insert other extra layers according to various application or functional requirement between above-mentioned each layer.
One of feature of the 3rd embodiment (Fig. 4) is: with regard to structure; the sensing electrode layer is divided into two parts: the first sensing electrode layer 20A and the second sensing electrode layer 20B, it is arranged at respectively between protection (OC) layer 14/ colored optical filtering substrates 18 and between colored optical filtering substrates 18/ polaroid 22.Detailed it, the second sensing electrode layer 20B be arranged at colored optical filtering substrates 18 first (on) surperficial 18A top, the first sensing electrode layer 20A is arranged at below the surperficial 18B of colored optical filtering substrates 18 second (descend).
The feature of more above-mentioned first embodiment, second embodiment and the 3rd embodiment, in brief, the sensing electrode layer 20 of first embodiment (Fig. 2) is the tops that are arranged at colored optical filtering substrates 18, the sensing electrode layer 20 of second embodiment (Fig. 3) is the belows that are arranged at colored optical filtering substrates 18, and the first/the second sensing electrode layer 20A, the 20B of the 3rd embodiment (Fig. 4) are arranged at colored optical filtering substrates 18 upper and lower sides respectively.
About the sensing electrode layer of the foregoing description (Fig. 2, Fig. 3, Fig. 4) (20,20A, 20B), it mainly comprises multilayer or single-layer electrodes layer, and each electrode layer then contains a plurality of sensing electrodes.Electrode layer is generally the electrically conducting transparent material, for example (but not being defined as) tin indium oxide (Indium Tin Oxide, ITO), aluminum zinc oxide (Aluminum Zinc Oxide, AZO) or indium zinc oxide (Indium ZincOxide, IZO).The electrode pattern of a kind of multi-layered electrode layer of vertical view illustration of Fig. 5 A, its first sensing electrode 201A and second that consists predominantly of first axial (for example X axis) be the second sensing electrode 202A of (for example Y-axis to) axially.Wherein, between the first axial adjacent first sensing electrode 201A, have first to connect lead (also can be described as bridging conductor (bridge)) 201B, and between the second axial adjacent second sensing electrode 202A, have second to connect lead 202B.In this illustration, sensing electrode 201A, 202A are argyle design, but are not limited to this, also can use other shape patterns.In general, for the first axial sensing electrode 201A and second these two electrode layers of axial sensing electrode 202A, no matter whether it is positioned at same plane, need insulant between connection lead 201B that overlaps each other and the 202B, in order to avoid electrically conducting each other.By the second axial sensing electrode (202A, 202B) and the first axial sensing electrode (201A, 201B), can be in order to detect X and the Building Y mark that touches a little respectively.The illustrated multi-layered electrode layer pattern of Fig. 5 A framework goes for the touch control display 100A of first embodiment (Fig. 2) or the central sensing electrode layer 20 of touch control display 100B of second embodiment (Fig. 3).In addition, the first axial sensing electrode (201A, 201B), the second axial sensing electrode (202A, 202B) then can be applicable to central first, second sensing electrode layer 20A, the 20B of touch control display 100C of the 3rd embodiment (Fig. 4) respectively.In this manual, but first axially, X axis, speech intercommunication such as first use; Second axially, but Y-axis is used to, speech such as second also intercommunication.The above-mentioned connection lead 201B or the first axial sensing electrode 201A can use light shield layer (BM) to replace.
The electrode pattern of a kind of single-layer electrodes layer of vertical view illustration of Fig. 5 B, it consists predominantly of a plurality of separate arranged side by side microscler sensing electrode 203A, and the two ends of each sensing electrode 203A are connected with lead 203B (the connection lead at two ends also can be an integrated wire that is electrically connected) respectively.When some sensing electrode 203A were touched, its two ends of touching a little with respect to this sensing electrode 203A can form different resistance values, were detected the Building X mark by this; In addition, detected the Building Y mark according to the sensing electrode 203A that touches a place.The illustrated single-layer electrodes layer pattern of Fig. 5 B framework goes for the touch control display 100A of first embodiment (Fig. 2) or the central sensing electrode layer 20 of touch control display 100B of second embodiment (Fig. 3).
The electrode pattern of the another kind of multi-layered electrode layer of the vertical view illustration of Fig. 5 C, it consists predominantly of axially (for example Y-axis to) separate microscler second sensing electrode 207 side by side of separate microscler first sensing electrode 206 arranged side by side of first axial (for example X axis) and second.By microscler first sensing electrode 206 and microscler second sensing electrode 207, can be in order to detect Y and the Building X mark that touches a little respectively.Need insulant between these two electrode layers 206,207, in order to avoid electrically conducting each other.The illustrated multi-layered electrode layer pattern of Fig. 5 C framework is applicable to the touch control display 100A of first embodiment (Fig. 2) or the central sensing electrode layer 20 of touch control display 100B of second embodiment (Fig. 3).In addition, microscler first sensing electrode 206,207 of microscler second sensing electrodes can be applicable to central first, second sensing electrode layer 20A, the 20B of touch control display 100C of the 3rd embodiment (Fig. 4) respectively.
About above-mentioned electrode layer (20,20A, 20B) pattern framework, below with some different structural design practices of illustration.Fig. 6 A, Fig. 6 B show a kind of multi-layered electrode layer structure, and two axial sensing electrode is to lay respectively at different aspects.The sectional view that the partial enlarged drawing of Fig. 6 A displayed map 5A, Fig. 6 B are then seen along profile line 6B-6B ' among the displayed map 6A.In graphic, Y-axis is positioned at the upper strata to electrode layer (202A, 202B), and X axis electrode layer (201A, 201B) then is positioned at lower floor.Upper and lower have an insulation course 204 between two-layer, so that two axially connect lead 201B, 202B electric insulations each other.In second embodiment (Fig. 3), this insulation course 204 can use (insulation) look resistance (CR) layer 16 to replace and be shared.Though the illustrated electrode of Fig. 6 B from bottom to top is respectively X axis electrode layer (201A, 201B), insulation course 204, Y-axis are to electrode layer 202A, yet, also can form reverse order structure (that is, from bottom to top be respectively Y-axis to electrode layer, insulation course, X axis electrode layer), its correlative type and explanation are not given unnecessary details at this.
Fig. 7 A, Fig. 7 B show another kind of multi-layered electrode layer structure, and two axial sensing electrode is to be positioned at identical aspect.The sectional view that the partial enlarged drawing of Fig. 7 A displayed map 5A, Fig. 7 B are then seen along profile line 7B-7B ' among the displayed map 7A.In graphic, X axis electrode layer (201A) is positioned at identical aspect with Y-axis to electrode layer (202B).Insulation course 204 is to use the form of insulation block (isolation island) to cover Y-axis to electrode layer (202B), so that two axially connect lead 201B, 202B electric insulation each other.Above insulation course 204, then cover conductive material (for example metal, tin indium oxide (ITO)), as connection (or bridge joint) the lead 201B of X axis.In second embodiment (the 3rd figure), above-mentioned insulation course 204 can use (insulation) look resistance (CR) layer 16 to replace and be shared.Above-mentioned connection lead 201B then can use (conduction) light shield layer, and (black matrix BM) replaces.Though the illustrated electrode of Fig. 7 B from bottom to top is respectively X/Y axial electrode layer (201A, 202B), insulation course 204, connection lead 201B, yet, also can form reverse order structure (that is, from bottom to top be respectively and connect lead 201B, insulation course 204, X/Y axial electrode layer (201A, 202B), its correlative type and explanation are not given unnecessary details at this.
The variation structure of Fig. 7 C displayed map 7A.Different with Fig. 7 A is that the connection lead 201B of X axis is continuous straight line, is communicated in the X axis electrode layer 201A of same row.X axis connects lead 201B can use identical or different material with Y-axis to being connected lead 202B.The sectional view that Fig. 7 D is then seen along profile line 7D-7D ' among the displayed map 7C.
Fig. 8 A, Fig. 8 B show another multi-layered electrode layer structure, and two axial sensing electrode also is to be positioned at identical aspect.The sectional view that the partial enlarged drawing of Fig. 8 A displayed map 5A, Fig. 8 B are then seen along profile line 8B-8B ' among the displayed map 8A.In graphic, X axis electrode layer (201A) is positioned at identical aspect with Y-axis to electrode layer (202B).Insulation course 204 is to cover X/Y axial electrode layer (201A, 202B) all sidedly, in order to avoid X axis connect lead 201B and Y-axis to the overlay region that is connected lead 202B because of the contact conducting.Insulation course 204 is positioned at X axis sensing electrode 201A place and has a through hole (via hole) 205, and X axis connection lead 201B (for example metal, tin indium oxide (ITO)) promptly is connected with X axis sensing electrode 201A by through hole 205.In second embodiment (Fig. 3), above-mentioned insulation course 204 can use (insulation) look resistance (CR) layer 16 to replace and be shared.Above-mentioned connection lead 201B then can use (conduction) light shield layer (BM) to replace.Though the illustrated electrode of Fig. 8 B from bottom to top is respectively X/Y axial electrode layer (201A, 202B), insulation course 204, connection lead 201B, yet, also can form reverse order structure (that is, from bottom to top be respectively and connect lead 201B, insulation course 204, X/Y axial electrode layer (201A, 202B), its correlative type and explanation are not given unnecessary details at this.
The variation structure of Fig. 8 C displayed map 8A.Different with Fig. 8 A is that the connection lead 201B of X axis is continuous straight line, is communicated in the X axis electrode layer 201A of same row.X axis connects lead 201B can use identical or different material with Y-axis to being connected lead 202B.The sectional view that Fig. 8 D is then seen along profile line 8D-8D ' among the displayed map 8C.
Fig. 9 A, Fig. 9 B show a kind of single-layer electrodes layer structure.The sectional view that the partial enlarged drawing of Fig. 9 A displayed map 5B, Fig. 9 B are then seen along profile line 9B-9B ' among the displayed map 9A.In graphic, the two ends of sensing electrode 203A are connected with lead 203B (the connection lead at two ends also can be an integrated wire that is electrically connected) respectively.Usually, the resistance value of lead 203B material is a shade below the resistance value of sensing electrode 203A material.For example, lead 203B uses metal, and sensing electrode 203A then uses tin indium oxide (ITO).In second embodiment (Fig. 3), the composition of above-mentioned sensing electrode 203A can compound light shield layer (BM) and transparency conducting layer.
According to another characteristic of the invention, can additionally use at least one barrier (shielding) layer 24, it is positioned between sensing electrode layer (20,20A, 20B) and liquid crystal (LC) layer 12, in order to avoid liquid crystal layer 12 internal electric fields to have influence on sensing electrode layer (20,20A, 20B), touch control display structure as shown in figure 10.For fear of the electrical communication between barrier layer 24 and the sensing electrode layer (20,20A, 20B), can use an insulation course 26 between the two, for example glass, colour cell (CR) layer or other insulation materials.Because light shield layer has netted (mesh) structure, can be used as the usefulness of barrier electric field when it reaches a suitable density.Therefore, above-mentioned barrier layer 24 also can use light shield layer (BM) to replace and be shared.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art are not in breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.

Claims (32)

1. plane conversion formula LCD with touch controllable function is characterized in that it comprises:
One liquid crystal layer;
One active-matrix transistor base is positioned at this liquid crystal layer below;
One electrode pair is arranged on this active-matrix transistor base, and this electrode pair comprises a pixel electrode and counter electrode, wherein produces the rotation of a side direction horizontal component of electric field with the liquid crystal of controlling this liquid crystal layer between this pixel electrode and this counter electrode;
One colored optical filtering substrates is positioned at this liquid crystal layer top; And
One sensing electrode layer is arranged at this colored optical filtering substrates top.
2. the plane conversion formula LCD with touch controllable function according to claim 1 is characterized in that wherein above-mentioned sensing electrode layer comprises:
One first axial electrode layer, it comprises a plurality of first sensing electrodes, and first axial, be connected with first between adjacent this first sensing electrode and connect lead; And
One second axial electrode layer, it comprises a plurality of second sensing electrodes, and second axial, be connected with second between adjacent this second sensing electrode and connect lead;
Wherein, be electric insulation between corresponding this first connection lead and this second connection lead.
3. the plane conversion formula LCD with touch controllable function according to claim 2, it is characterized in that the first wherein above-mentioned axial electrode layer and this second axial electrode layer are positioned at different aspects, and have an insulation course between this first axial electrode layer and this second axial electrode layer.
4. the plane conversion formula LCD with touch controllable function according to claim 2 is characterized in that the first wherein above-mentioned sensing electrode is positioned at identical aspect with second sensing electrode; First connect lead and this second overlapping region that is connected between the lead at this, the block that insulate is set, so that this first connection lead second is connected lead electric insulation each other with this.
5. the plane conversion formula LCD with touch controllable function according to claim 2 is characterized in that the first wherein above-mentioned sensing electrode is positioned at identical aspect with second sensing electrode; One insulation course is used for avoiding the first connection lead and second to connect the lead overlay region because of the contact conducting; This insulation course is positioned at the first sensing electrode place and has a through hole, and first connects lead is connected with first sensing electrode by this through hole.
6. the plane conversion formula LCD with touch controllable function according to claim 1 is characterized in that wherein above-mentioned sensing electrode layer comprises a plurality of separate sensing electrodes arranged side by side, and each these sensing electrode two ends is connected with lead respectively.
7. the plane conversion formula LCD with touch controllable function according to claim 1 is characterized in that wherein above-mentioned sensing electrode layer comprises:
A plurality of first axially separate microscler first sensing electrode arranged side by side;
A plurality of second axially separate microscler second sensing electrode arranged side by side;
Wherein, be electric insulation between this microscler first sensing electrode, this microscler second sensing electrode.
8. the plane conversion formula LCD with touch controllable function according to claim 1 is characterized in that it more comprises a barrier layer, between this sensing electrode layer and this liquid crystal layer.
9. the plane conversion formula LCD with touch controllable function according to claim 8 is characterized in that wherein above-mentioned barrier layer is a light shield layer.
10. plane conversion formula LCD with touch controllable function is characterized in that it comprises:
One liquid crystal layer;
One active-matrix transistor base is positioned at this liquid crystal layer below;
One electrode pair is arranged on this active-matrix transistor base, and this electrode pair comprises a pixel electrode and counter electrode, wherein produces the rotation of a side direction horizontal component of electric field with the liquid crystal of controlling this liquid crystal layer between this pixel electrode and this counter electrode;
One colored optical filtering substrates is positioned at this liquid crystal layer top; And
One sensing electrode layer is arranged between this colored optical filtering substrates and this liquid crystal layer.
11. the plane conversion formula LCD with touch controllable function according to claim 10 is characterized in that wherein above-mentioned sensing electrode layer comprises:
One first axial electrode layer, it comprises a plurality of first sensing electrodes, and first axial, be connected with first between adjacent this first sensing electrode and connect lead; And
One second axial electrode layer, it comprises a plurality of second sensing electrodes, and second axial, be connected with second between adjacent this second sensing electrode and connect lead;
Wherein, be electric insulation between corresponding this first connection lead and this second connection lead.
12. the plane conversion formula LCD with touch controllable function according to claim 11 is characterized in that the first wherein above-mentioned connection lead is a light shield layer.
13. the plane conversion formula LCD with touch controllable function according to claim 11 is characterized in that the first wherein above-mentioned axial electrode layer is a light shield layer.
14. the plane conversion formula LCD with touch controllable function according to claim 10 is characterized in that wherein above-mentioned sensing electrode layer is a light shield layer.
15. the plane conversion formula LCD with touch controllable function according to claim 11, it is characterized in that the first wherein above-mentioned axial electrode layer and this second axial electrode layer are positioned at different aspects, and have an insulation course between this first axial electrode layer and this second axial electrode layer.
16. the plane conversion formula LCD with touch controllable function according to claim 15 is characterized in that wherein above-mentioned insulation course is the look resistance layer.
17. the plane conversion formula LCD with touch controllable function according to claim 11 is characterized in that the first wherein above-mentioned sensing electrode is positioned at identical aspect with second sensing electrode; First connect lead and this second overlapping region that is connected between the lead in this, the block that insulate is set, so that this first connection lead second is connected lead electric insulation each other with this.
18. the plane conversion formula LCD with touch controllable function according to claim 17 is characterized in that wherein above-mentioned insulation block is the look resistance layer.
19. the plane conversion formula LCD with touch controllable function according to claim 11 is characterized in that the first wherein above-mentioned sensing electrode is positioned at identical aspect with second sensing electrode; One insulation course is used for avoiding the first connection lead and second to connect the lead overlay region because of the contact conducting; This insulation course is positioned at the first sensing electrode place and has a through hole, and first connects lead is connected with first sensing electrode by this through hole.
20. the plane conversion formula LCD with touch controllable function according to claim 19 is characterized in that wherein above-mentioned insulation course is the look resistance layer.
21. the plane conversion formula LCD with touch controllable function according to claim 10 is characterized in that wherein above-mentioned sensing electrode layer comprises a plurality of separate sensing electrodes arranged side by side, each these sensing electrode two ends is connected with lead respectively.
22. the plane conversion formula LCD with touch controllable function according to claim 21 is characterized in that compound light shield layer of wherein above-mentioned sensing electrode and transparency conducting layer.
23. the plane conversion formula LCD with touch controllable function according to claim 10 is characterized in that wherein above-mentioned sensing electrode layer comprises:
A plurality of first axially separate microscler first sensing electrode arranged side by side;
A plurality of second axially separate microscler second sensing electrode arranged side by side;
Wherein, be electric insulation between this microscler first sensing electrode, this microscler second sensing electrode.
24. the plane conversion formula LCD with touch controllable function according to claim 10 is characterized in that it more comprises a barrier layer, between this sensing electrode layer and this liquid crystal layer.
25. the plane conversion formula LCD with touch controllable function according to claim 24 is characterized in that wherein above-mentioned barrier layer is a light shield layer.
26. the plane conversion formula LCD with touch controllable function is characterized in that it comprises:
One liquid crystal layer;
One active-matrix transistor base is positioned at this liquid crystal layer below;
One electrode pair is arranged on this active-matrix transistor base, and this electrode pair comprises a pixel electrode and counter electrode, wherein produces the rotation of a side direction horizontal component of electric field with the liquid crystal of controlling this liquid crystal layer between this pixel electrode and this counter electrode;
One colored optical filtering substrates is positioned at this liquid crystal layer top;
One first sensing electrode layer is arranged between this colored optical filtering substrates and this liquid crystal layer; And
One second sensing electrode layer is arranged at this colored optical filtering substrates top.
27. the plane conversion formula LCD with touch controllable function according to claim 26, it is characterized in that the first wherein above-mentioned sensing electrode layer comprises one first axial electrode layer, it comprises a plurality of first sensing electrodes, and, be connected with first between adjacent this first sensing electrode and connect lead first axial; The second above-mentioned sensing electrode layer comprises one second axial electrode layer, and it comprises a plurality of second sensing electrodes, and in second axial, be connected with second between adjacent this second sensing electrode and connect lead.
28. the plane conversion formula LCD with touch controllable function according to claim 26 is characterized in that the first wherein above-mentioned sensing electrode layer comprises a plurality of first axially separate microscler first sensing electrode arranged side by side; This second sensing electrode layer comprises a plurality of second axially separate microscler second sensing electrode arranged side by side.
29. the plane conversion formula LCD with touch controllable function according to claim 26 is characterized in that the first wherein above-mentioned connection lead is a light shield layer.
30. the plane conversion formula LCD with touch controllable function according to claim 26 is characterized in that the first wherein above-mentioned sensing electrode layer is a light shield layer.
31. the plane conversion formula LCD with touch controllable function according to claim 26 is characterized in that it more comprises a barrier layer, between this sensing electrode layer and this liquid crystal layer.
32. the plane conversion formula LCD with touch controllable function according to claim 31 is characterized in that wherein above-mentioned barrier layer is a light shield layer.
CN2009101716639A 2009-07-24 2009-09-02 plane switching liquid crystal display (IPSLCD) with touch control function Pending CN101963713A (en)

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