CN100504556C - LCD panel and display having input function - Google Patents
LCD panel and display having input function Download PDFInfo
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- CN100504556C CN100504556C CNB200610084258XA CN200610084258A CN100504556C CN 100504556 C CN100504556 C CN 100504556C CN B200610084258X A CNB200610084258X A CN B200610084258XA CN 200610084258 A CN200610084258 A CN 200610084258A CN 100504556 C CN100504556 C CN 100504556C
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Abstract
The invention discloses a pixel reading structure of touch control typed LCD, which contains second and third switching components to generate a light signal as traditional pixel structure, wherein the second switching component contains second grid to connect the grid line, second drain and second source pole of the pixel reading structure to connect the reading line of pixel reading structure; the third switching component concludes third source pole to connect the second drain and third grid and third drain connect a reference voltage.
Description
Technical field
The present invention is relevant with LCD, and is especially relevant with a kind of LCD with embedded the 3rd changeover module.
Background technology
Because amorphous silicon material has sensitometric characteristic, so the 3rd changeover module that can be used as the touch control type LCD panel by this characteristic is a technology of maturation gradually in recent years.Because the layout of the light signal sensing circuit that is possessed by the 3rd changeover module that amorphous silicon material constituted and touch control type LCD panel and the process technique of active Thin Film Transistor-LCD of the prior art are compatible fully, therefore compared to the touch control type LCD panel that generally adds contact panel, the embedded type touch control panel that is used as the 3rd changeover module with the embedding amorphous silicon material has lower production cost because of process compatibility Gao Erhui.
On the other hand, generally can be because the transmittance of contact panel influence and make penetration reduce by 20% by adding touch control type LCD panel that the contact panel mode constitutes, and adopt amorphous silicon material as its light penetration degree of embedded type touch control panel of the 3rd changeover module only with read pixel (Readout Pixel) structure in the 3rd changeover module and this light signal sense wire layout (Layout) relevant.Therefore, if it is proper to read the topological design of the 3rd changeover module in the pixel and sense wire thereof at each, the aperture opening ratio of this touch control type LCD panel can't produce too much influence because of the design of the 3rd changeover module and sense wire.
See also Fig. 1, it a kind of reads in the dot structure equivalent circuit diagram of its 3rd changeover module at a touch control type LCD panel for expression according to of the prior art.As shown in FIG., the 3rd changeover module system comprises a photosensitive film transistor 121 as optical sensing subassembly, sees through a thin film transistor (TFT) in order to produce a light signal and is read by a sense wire (Readout Line) as the control of switch module 122.The drain electrode of this photosensitive film transistor 121 is connected its source S of bias voltage Vb with grid D, G system and then is connected to this sense wire via this thin film transistor switch assembly 122.As can be seen from Figure 1, the drain electrode of this thin film transistor switch assembly 122 (Drain) D system is connected to the source S of this photosensitive film transistor 121, and its grid G and its source S then are to be connected respectively on this gate line of reading pixel (Gate Line) and on this sense wire.
Please further consult Fig. 2 A, its be the expression a kind of LCD of the prior art substrate on joint sheet (Connecting Pads), comprise the configuration schematic diagram of gate line joint sheet (Gate Pads) and data line joint sheet (Data Pads), purpose is to connect via module processing procedure and drive IC.As shown in FIG., in a traditional liquid crystal display device structure, this gate line joint sheet 55 is that the difference layout is in the adjacent both sides of this substrate with this data line joint sheet 45, wherein, side in order to this gate line joint sheet 55 of layout is called the gate line side again, then is called as the data line side in order to a side of this data line joint sheet 45 of layout.This gate line joint sheet 55 is respectively each bar gate line on this LCD and data line to be connected to its drive IC output separately with this data line joint sheet 45, so that the gate line signal of drive IC output and data-signal can be sent to each bar gate line and data line of this LCD through this gate line joint sheet 55 and this data line joint sheet 45, with the viewing area of effective this display of driving.
Yet, in the touch control type LCD panel, except aforesaid gate line and data line, also must add the configuration of the sense wire of light signal, so the line configuring on this touch control type LCD panel will be complicated more.Please continue to consult Fig. 2 B, it is the configuration schematic diagram on a substrate of sense wire 31 and corresponding sense wire joint sheet 35 thereof in the existing a kind of touch control type LCD panel of expression.As shown in FIG., disposed under the situation of gate line joint sheet 55 and data line joint sheet 45 in sense wire 31 a large amount of configurations and in gate line side on this substrate and data line side, this sense wire joint sheet 35 can only be configured in a side extra on this substrate, so that each bar sense wire 31 is connected on its corresponding sense wire IC.Under these circumstances, must cook up an additional areas 33 on the substrate of this touch control type LCD panel and come this sense wire joint sheet 35 of layout, because the variation of substrate area may cause the module processing procedure of touch control type LCD panel to produce with traditional liquid crystal panel module processing procedure incompatible.Therefore, the configuration of the sense wire joint sheet 35 of the sense wire 31 of existing touch panel and correspondence thereof can make manufacturing cost increase because of the incompatible of module processing procedure.
Duty is event, the applicant is in view of embedded type touch control panel of the prior art, its circuit layout of reading dot structure can impact the aperture opening ratio of display, and also there is the incompatible problem of module processing procedure in the configuration of its sense wire and sense wire joint sheet 35, a kind of brand-new " LCD of embedded the 3rd changeover module of tool " therefore proposed, effectively to overcome the above-mentioned shortcoming in the existing embedded panel.
Summary of the invention
The present invention's the first conception system proposes a kind of LCD, this LCD comprises a gate line, a data line, a sense wire, one first changeover module, one second changeover module and one the 3rd changeover module at least, wherein this gate line and this data linear system cross arrangement each other, this reads linear system and this data line is arranged in parallel.This first changeover module cording has a first grid that is connected with this gate line again, one first drain electrode that is connected with this data line, and with a liquid crystal capacitance and interconnective one first source electrode of a storage capacitors of this LCD, wherein this liquid crystal capacitance and this storage capacitors system is connected to a common voltage of this LCD again.This second changeover module cording has a second grid, one second drain electrode that is connected with this gate line and one second source electrode that is connected with this sense wire.The 3rd changeover module then has one the 3rd grid and one the 3rd drain electrode is connected to a reference voltage simultaneously, and one the 3rd source electrode and the 3rd drains and to interconnect.
According to above-mentioned conception, wherein this common voltage and this reference voltage system interconnects.
According to above-mentioned conception, wherein this liquid crystal capacitance system is formed by a pixel electrode, a liquid crystal layer and the community electrode institute storehouse of this LCD, and this storage capacitors then is by this pixel electrode of this LCD, a dielectric layer and community electrode.
According to above-mentioned conception, wherein this common electrode lines more comprises a vertical structure, the edge of this pixel electrode of layout and extend along this data line.
According to above-mentioned conception, wherein this pixel electrode covers the some of the 3rd drain electrode and the 3rd grid.
According to above-mentioned conception, wherein this pixel electrode covers the some of the 3rd grid and the 3rd source electrode.
The present invention's the second conception system proposes a kind of LCD, this LCD system comprises a substrate at least, one sense wire joint sheet, one gate line and a data line and one first and one second reading outlet, wherein this substrate cording has a plurality of first to read pixel and a plurality of second to read pixel formed thereon, this sense wire joint sheet system is arranged in the zone, an edge of this substrate, and this gate line and this data linear system cross arrangement each other, this first sense wire then is arranged in parallel with this data line, be connected to this sense wire joint sheet in order to should a plurality of first to read pixel, this second reading outlet then is to be arranged in parallel with this data line, is connected to this sense wire joint sheet in order to should a plurality of second to read pixel.
According to above-mentioned conception, this LCD wherein, it more comprises this fringe region that at least one gate line joint sheet is arranged in this substrate.
According to above-mentioned conception, this LCD wherein, it more comprises this fringe region that at least one data line joint sheet is arranged in this substrate.
According to above-mentioned conception, wherein this first is read pixel one of them more comprises one first changeover module, one second changeover module and one the 3rd changeover module.This first changeover module has a first grid that is connected with this gate line, one first drain electrode that is connected with this data line, and with a liquid crystal capacitance and interconnective one first source electrode of a storage capacitors of this LCD, wherein this liquid crystal capacitance and this storage capacitors system is connected to a common voltage of this LCD again.This second changeover module then is to have a second grid, one second drain electrode that is connected with this gate line and one second source electrode that is connected with this sense wire.The 3rd changeover module then has one the 3rd grid and one the 3rd drain electrode is connected to a reference voltage simultaneously, and one the 3rd source electrode and the 3rd drains and to interconnect.
According to above-mentioned conception, wherein this common voltage and this reference voltage system interconnects.
A kind of LCD of another conception system's proposition of the present invention, it comprises a substrate, one first and one second reading outlet and one first and one second peripheral cabling at least, be formed with one first and one second insulation course in regular turn on wherein being somebody's turn to do, and have more a plurality of first and second on this substrate and read pixel, this first goes out linear system with a second reading and is connected this a plurality of first and second respectively and reads pixel, this first peripheral cabling and this second peripheral cabling then are alternately to be formed on this first and second insulation course, with connect respectively this first with this second reading outlet.
According to above-mentioned conception, wherein this first insulation course is a glass substrate.
According to above-mentioned conception, wherein this first with this second periphery walk the edge zone of linear system layout at this substrate.
According to above-mentioned conception, wherein more comprise the edge zone of a sense wire joint sheet layout at this substrate.
According to above-mentioned conception, wherein this first is read pixel one of them more comprises one first changeover module, one second changeover module and one the 3rd changeover module.This first changeover module cording has a first grid that is connected with this gate line, one first drain electrode that is connected with this data line, and with a liquid crystal capacitance and interconnective one first source electrode of a storage capacitors of this LCD, wherein this liquid crystal capacitance and this storage capacitors system is connected to a common voltage of this LCD again.This second changeover module cording has a second grid, one second drain electrode that is connected with this gate line and one second source electrode that is connected with this sense wire.The 3rd changeover module cording has one the 3rd grid and one the 3rd drain electrode to be connected to a reference voltage simultaneously, and one the 3rd source electrode and the 3rd drains and to interconnect.
According to above-mentioned conception, wherein this common voltage and this reference voltage system interconnects.
The present invention's another conception is to propose a LCD, it comprises a gate line, a data line, a sense wire, one first changeover module, one second changeover module and one the 3rd changeover module at least, wherein this gate line and this data linear system cross arrangement each other, this reads linear system and this data line is arranged in parallel.In addition, this first changeover module cording has a first grid that is connected with this gate line, be connected with this data line one first the drain electrode, and with interconnective one first source electrode of a pixel electrode of this LCD.This second changeover module cording has a second grid, one second drain electrode that is connected with this gate line and one second source electrode that is connected with this sense wire.The 3rd changeover module system is connected and more comprises one the 3rd grid, one the 3rd drain electrode and one the 3rd source electrode with this second drain electrode.
According to above-mentioned conception, wherein this pixel electrode covers the some of the 3rd grid.
According to above-mentioned conception, wherein this pixel electrode covers the some of the 3rd drain electrode.
According to above-mentioned conception, wherein this pixel electrode covers the some of the 3rd source electrode.
Comprehensive the above, LCD device proposed by the invention not only can be kept the aperture opening ratio of this LCD by the topological design of the 3rd changeover module of reading pixel, and, more can connect altogether and the design of the hierarchical layout of peripheral cabling and reach the advantage that reduces the sense wire configuration and reduce sense wire bond pad arrangement area, can not exert an influence because of the design of sense wire and sense wire joint sheet thereof with the module processing procedure of guaranteeing this LCD by a plurality of sense wires.
By the detailed description of carrying out with reference to following accompanying drawing, can more in depth understand the present invention.
The accompanying drawing summary
Fig. 1 be expression a kind of in existing touch-control liquid crystal display the equivalent circuit diagram of an optical sensing subassembly.
The configuration schematic diagram of the joint sheet of Fig. 2 A system expression a kind of LCD of the prior art.
Fig. 2 B, it is the configuration schematic diagram of sense wire 31 and corresponding sense wire joint sheet 35 thereof in the existing a kind of touch-control liquid crystal display of expression.
Fig. 3 A and Fig. 3 B system represent respectively to read the equivalent circuit diagram of pixel according to a common pixel and of an one of preferred embodiment of the present invention touch-control liquid crystal display.
Fig. 4 A and the preferred embodiment of reading configuration of Fig. 4 B system expression according to the present invention.
The peripheral cabling and the configuring condition of this sense wire joint sheet on substrate of Fig. 5 A and the expression the present invention's of 5B system touch-control liquid crystal display.
Fig. 6 A and Fig. 6 B system illustrate the synoptic diagram of the peripheral trace configurations and the multilayer periphery trace configurations of individual layer respectively.
Fig. 7 A system represents that one of one preferred embodiment touch-control liquid crystal display is read the equivalent circuit diagram of pixel according to the present invention.
Fig. 7 B system explanation one touch-control liquid crystal display is read the vertical view of the detailed circuit layout of dot structure.
Fig. 7 C and Fig. 7 D system represents respectively to read according to one shown in Fig. 7 B overlooks enlarged drawing and sectional view in the dot structure.
[primary clustering symbol description]
101 first changeover modules, 102,122 second changeover modules
103,121 the 3rd changeover modules, 35 sense wire joint sheets
45 data line joint sheets, 55 gate line joint sheets
12 light sensing units, 33 additional areas
31,31-1 ... the 31-N sense wire
10,20 read pixel 36 peripheral cablings
14 pixel cells, 1011 first grids
1,013 first drain electrodes of 1,012 first source electrodes
1,022 second source electrodes, 1021 second grids
1,023 second drain electrodes of 1032 the 3rd source electrodes
1031 the 3rd grids 1031 the 3rd grid
51-1,51-2 gate line 41-1,41-2 data line
25 common electrode lines 251 laterally partly
250 vertical partly 105 pixel electrodes
1601,1602,1603 connecting holes
200 substrates, 210 insulation courses
220 insulating protective layers, 160 transparency conducting layers
Embodiment
See also Fig. 3 A and Fig. 3 B, it is an equivalent circuit diagram of representing to read according to a common pixel (Normal Pixel) and of one of preferred embodiment of the present invention touch control type LCD face version pixel (Readout Pixel) respectively.In general, in the touch control type LCD panel, all can comprise the existence of these two kinds of pixels usually, change the photocurrent that produces because of light during touch-control arround can sensing yet have only this to read pixel.Please consult Fig. 3 A earlier, the display pixel of this common pixel and general existing LCD is identical, as shown in FIG., this common pixel is to comprise pair of grid lines Gaten, Gaten-1 and pair of data lines Datan, Datan-1 is cross arrangement each other, one first changeover module 101 has a first grid G1 and is connected with a first grid polar curve Gaten, one first drain D 1 is connected with this first data line Daten and one first source S 1 is connected with a liquid crystal capacitance CLC and a storage capacitors CST in this LCD, and this liquid crystal capacitance CLC and this storage capacitors CST further are connected to a common voltage Vcom of LCD.Compare with this common pixel 15, it only comprises one first changeover module 101 and the 3rd changeover module is not arranged, the pixel of reading shown in Fig. 3 B then is additionally to have comprised a light sensing unit 12, in order to producing a light signal is sent to this signal again via a sense wire a signal processing system (not being shown among the figure), be that the pixel of reading of which position has produced this light signal with analysis.In addition, this light sensing unit 12 also comprises one second changeover module 102 and one the 3rd changeover module 103.These second changeover module, 102 cordings have a grid G 2 to be connected with this first grid polar curve Gaten, one second drain D 2, and one second source S 2 is connected with this sense wire.103 of the 3rd changeover modules are to have one the 3rd grid G 3 and one the 3rd drain D 3 is connected to a reference voltage Vref simultaneously, and have one the 3rd source S 3 and interconnect with this second drain D 2.Here must further specify, though common pixel all is the pixel that is comprised in the touch-control liquid crystal display panel of the present invention with reading pixel, yet, technology of the present invention is to focus on the design that this reads dot structure, therefore, in the description of back, will only read dot structure and relevant configuration thereof based on this.
See also Fig. 4 A, it is the synoptic diagram of expression preferred embodiment one of according to the present invention a kind of this sense wire layout in touch panel.As shown in FIG., each bar sense wire 31-1,31-2 ..., 31-N by it each self-corresponding a plurality of sense wire joint sheet 35 that are connected to after the pixel separately of reading.Yet under such configuration, each area of reading the light sensing unit on the pixel must have enough area sizes, just can induce enough big photocurrent.Therefore, usually must make this light sensing unit of reading pixel occupy bigger areal extent, the effectiveness of this light sensing unit of competence exertion under such configuration.Yet such dot structure design can influence this and read aperture ratio of pixels, and in order further to overcome this problem, the present invention has proposed the preferred embodiment of another kind of sense wire layout again, reads aperture ratio of pixels to avoid sacrificing this.
See also shown in Fig. 4 B, connect one group of a plurality of one first sense wire 31-1 that read pixel 10 and be connected a plurality of second reading outlet 31-2 systems of reading pixel 20 of another group and be connected to same sense wire joint sheet 35 jointly, thereby the photo-signal of being read on this sense wire joint sheet 35 will be to read pixel 10 from two groups, 20 light sensing unit 12,22 photo-signals that produced, therefore, dwindle even will read the area of the light sensing unit of pixel, the photo-signal by this sense wire joint sheet 35 also can be because of connecting reading pixel and obtaining compensation of many groups simultaneously.Therefore, such sense wire topological design not only can realize keeping the advantage that this reads the aperture opening ratio size of pixel, and the number of this sense wire, joint sheet 35 also can reduce because plural groups reads connecing altogether of pixel.In this example, for the convenience that illustrates, the present invention's technology contents only is described with two sense wires.In the application of reality, joint sheet 35 can be connected to the sense wire more than three, depends on the Demand Design of product.
In the module processing procedure of touch-control liquid crystal display, each bar sense wire 31-1,31-2 ..., 31-N can see through at least one sense wire joint sheet 35 and be connected on the printed circuit board (PCB) (not being shown among the figure).And by the sense wire topological design in the aforementioned specific embodiment, the number of this sense wire joint sheet 35 can be because be read connecing altogether of pixel and reduced by plural groups, thereby can make the touch-control liquid crystal display of the conception according to the present invention possess another advantage when carrying out the module processing procedure.See also shown in Fig. 5 A and the 5B, its be the expression the present invention touch-control liquid crystal display described sense wire 31-1,31-2 ..., 31-N peripheral cabling 36 and described sense wire joint sheet 35 situation about on a substrate, disposing.Because the number of described sense wire joint sheet 35 reduces, described sense wire joint sheet 35 can layout in data line side or this gate line side of described touch-control liquid crystal display.Thereby the module processing procedure that makes this touch-control liquid crystal display can be compatible with the module processing procedure of general LCD.And, because connect described sense wire joint sheet 35 and these sense wires 31-1,31-2 ..., 31-N a plurality of peripheral cablings 36 can alternately be formed on the different insulation courses on the fringe region of described substrate, thereby can effectively reduce and be used for the zone of these peripheral cablings 36 of layout, its reason is described as follows.
See also Fig. 6 A and Fig. 6 B, it is the synoptic diagram that a kind of peripheral trace configurations of 36 configurations of traditional peripheral cabling and the conception according to the present invention is described respectively.Fig. 6 A system a plurality of peripheral trace configurations of expression are under the situation with one deck, as shown in FIG., in the ordinary course of things, the configuration area of periphery cabling 36 can be subjected to the influence that periphery is walked the spacing d between live width w and the peripheral cabling, and this spacing d must maintain a lower limit value, generally about about 10 μ m, to guarantee the yield of processing procedure.If but these peripheral cablings 36 are configured on a plurality of structural sheets instead, under the condition of identical live width w and uniform distances d, be example then with the double-layer structure layer, can hold in the equal area scope twice peripheral trace configurations, shown in Fig. 6 B.In the present embodiment, the spacing between two-layer up and down adjacent peripheral cabling can break through aforesaid lower limit value, and be reduced to below the 10 μ m, and makes that open ended peripheral cabling increases in the unit space, with the zone around the reduction liquid crystal panel.Its preferably, wherein one deck structural sheet can be glass substrate.Thereby the configuration of various sense wire, sense wire joint sheet and peripheral cabling mode in the above-mentioned conception according to the present invention, can effectively solve the compatible of this touch-control liquid crystal display module processing procedure and keep the purpose that this reads the aperture opening ratio of pixel.
On the other hand, except above-mentioned conception can be kept the aperture opening ratio of reading pixel of touch-control liquid crystal display, the present invention also propose simultaneously a kind of can read the circuit layout design in the pixel and reach the dot structure that increases its aperture opening ratio by change design.See also Fig. 7 A, its be expression according to the present invention one of one preferred embodiment touch-control liquid crystal display read pixel etc. the school circuit diagram.In this specific embodiment, the dot structure of reading of this touch-control liquid crystal display comprises a pixel cell 14 and 12 liang of parts of a light sensing unit equally.This pixel cell 14 comprises one first changeover module 101 equally with general display pixel structure, this first changeover module 101 further has one first drain D 1 and is connected with this one first data line Datan that reads pixel, one first grid G1 is connected with this first grid polar curve Gaten who reads pixel, and one first source S 1, see through a liquid crystal capacitance CLC that this touch-control liquid crystal display is connected in parallel and a storage capacitors CST and be connected to the common voltage that this reads pixel.Partly then include one second changeover module 102 and one the 3rd changeover module 103 at this light sensing unit 12.This second changeover module 102 has a second grid G2 and is connected with this first grid polar curve Gaten, and one second drain D 2 is connected with the 3rd changeover module 103, and one second source S 2 is connected with this sense wire.103 of the 3rd changeover modules are as an optical sensing subassembly, in order to produce a photo-signal via the control of this second changeover module 102 through the transmission of this sense wire and read.The 3rd changeover module system comprises one the 3rd grid G 3 and one the 3rd drain D 3 that is connected to this common voltage Vcom simultaneously, and one the 3rd source S 3 that is connected to this second drain D 2.This reads pixel can further reduce the shared area of its circuit layout under the annexation of this specific embodiment, its reason will be described in detail as follows.
Please continue to consult Fig. 7 B, it is that explanation one touch-control liquid crystal display is read the vertical view of the detailed circuit layout of dot structure.As shown in FIG., this reads pixel 10 is by one first and one second grid line 51-1,51-2 constitutes the border of its top and bottom, and by one first and one second data line 41-1,41-2 constitutes the border on its left side and the right, therefore, these data lines 41-1,41-2 and these gate lines 51-1,51-2 is cross arrangement each other, to cross four borders that this reads pixel 10.In addition, a sense wire 31 is a layout near one of this first data line 41-1 side and be arranged in parallel with it and read the photo-signal that produced in the pixel 10 signal processing unit (not being shown among the figure) to touch-control liquid crystal display to transmit this.This is read in the circuit layout of pixel 10 and more disposes community electrode line 25, it has one and laterally partly 251 connects in order to the common electrode lines with adjacent two pixels, and have one vertically partly 250, it is layout at the edge of a pixel electrode 105 of this touch-control liquid crystal display and extends to this first grid polar curve 51-1 along the edge of this second data line 41-2, wherein should be vertically partly 250 be as much as possible near this second data line 41-2 to keep the aperture opening ratio that this reads pixel 10 as far as possible.In addition, first changeover module, 101 cordings in the inside of this pixel electrode 10 have and have one first drain electrode 1013 and be connected with this first data line 41-1, one first grid 1011 is that layout is on this first grid polar curve 51-1, that is with this first grid polar curve 51-1 as this first grid 1011, and one first source electrode 1012, see through this one first connecting hole (Through Hole) 1601 and be connected with this pixel electrode 105.On the other hand, this 102 of second changeover module reading pixel 10 is to utilize this first grid polar curve 51-1 to be used as its second grid 1021, and this second source electrode 1022 then is directly to be connected with this sense wire 31.In addition, this second changeover module 102 also has one second drain electrode 1023, and it also reads one the 3rd source electrode 1032 of the 3rd changeover module 103 of pixel 10 simultaneously as this, so that this second changeover module and the 3rd changeover module 102,103 can be connected to each other.In addition, the 3rd grid 1031 of the 3rd assembly 103 is to be configured in opposite side with its 3rd 1033 of drain electrode, and the 3rd grid 1031 is to be connected to through one second and one the 3rd connecting hole 1602,1603 respectively in an electrically conducting transparent (ITO) layer 160 of this touch-control liquid crystal display with the 3rd 1033 of drain electrodes, as shown in Fig. 7 D, formation is connected so that this 3rd grid 1031 sees through this transparency conducting layer 160 with the 3rd drain electrode 1033.
In addition, what must further specify is that foregoing this storage capacitors CST is made up of this pixel electrode 105, a dielectric layer (not being shown among the figure) and 25 storehouses of this common electrode lines; This liquid crystal capacitance CLC then constitutes by the liquid crystal layer (not being shown among the figure) of this pixel electrode 105, this touch-control liquid crystal display and at the common electrode institute storehouse of the optical filter side of this touch-control liquid crystal display.
On the other hand, in a preferred embodiment of the present invention, this touch-control liquid crystal display read dot structure can also be further improvement design in addition.Because in the circuit structure design of reading pixel of general touch-control liquid crystal display, the 3rd changeover module 103 described in Fig. 7 A and B, its photoperceptivity can be subjected to the interference of the voltage that applies on this pixel electrode 105 or this transparency conducting layer 160, therefore, cover and just can make the 3rd changeover module produce normal photosensitive effect after pixel electrode 105 on the 3rd changeover module 103 partly must remove, as shown in Fig. 7 D.Yet, this transparency conducting layer 160 cover the 3rd changeover module 103 this partly be removed after, may be near the liquid crystal molecule at the 3rd changeover module 103 places, and produce the situation of light leak because of the influence of the fringe field that optical sensing subassembly caused.Therefore, under these circumstances, utilize the extension of the metal level of the 3rd grid 1031 that constitutes the 3rd changeover module 103, shown in the metal level among Fig. 7 D 1032, cover the situation of this light leak.Yet such mode also can be read aperture ratio of pixels to this and be impacted.In order effectively to overcome this problem, the structural design of reading pixel 10 in the previous embodiment of the present invention can also further be avoided the extension situation of gate metal layer again by the overlay area of this pixel electrode of control.
See also shown in Fig. 7 C and Fig. 7 D, its be represent one the 3rd changeover module 103 reading in the dot structure to be comprised according to one shown in Fig. 7 B respectively overlook enlarged drawing and sectional view, be along the cross-section structure that AA ' profile line presented shown in Fig. 7 C wherein at the 3rd changeover module 103 shown in Fig. 7 D.As shown in Fig. 7 D, the 3rd grid 1031 of the 3rd changeover module 103 is to be formed on the substrate 200, and the 3rd source electrode 1032 of the 3rd changeover module 103 and the 3rd drain electrode 1033 are to be formed on the 3rd grid, and wherein have a gate insulator 210 in order to form electric insulating state each other at it.In addition, on the 3rd source electrode 1032, then form this pixel electrode layer 105, and wherein also have an insulating protective layer 220 in the situation that forms electrical isolation each other.And from Fig. 7 C and Fig. 7 D as can be seen, in order to reduce the extension of this gate metal layer, this dot structure can see through pixel electrode 105 and extend on 1032 layers of the 3rd source electrodes, the regional a as shown in Fig. 7 D is to solve the light leak problem of liquid crystal layer.Same, the technology that sees through pixel electrode layer 105 extension coverings the 3rd source layer also can be applied to the 3rd grid and the 3rd source electrode top equally, utilizes the covering of pixel electrode, can hide the electric field at edge, so can reduce the width of gate metal.Therefore, can effectively keep this and read aperture ratio of pixels.
Comprehensive the above, the present invention proposes a kind of liquid crystal display contact panel with embedded the 3rd changeover module, effectively to overcome the shortcoming in the existing touch-control liquid crystal display.Yet; mandatory declaration be; the foregoing description is only in order to illustrate the present invention's better embodiment; yet the present invention's scope ought not be subject to above-mentioned every embodiment: and the present invention can make various distortion under situation about not breaking away from by the defined protection domain of claims.
Claims (25)
1. a LCD, it comprises:
One gate line and a data line, it is cross arrangement each other;
One sense wire is arranged in parallel with this data line;
One first changeover module, it has a first grid that is connected with this gate line, one first drain electrode that is connected with this data line, and with a liquid crystal capacitance and interconnective one first source electrode of a storage capacitors of this LCD, wherein this liquid crystal capacitance and this storage capacitors are connected to a common voltage of this LCD again;
One second changeover module, it has the second grid that this gate line was connected, one second drain electrode that links to each other with this first grid and one second source electrode that is connected with this sense wire; And
One the 3rd changeover module, it has one the 3rd grid and one the 3rd drain electrode is connected to a reference voltage simultaneously, and one the 3rd source electrode second drains and to interconnect with this.
2. LCD as claimed in claim 1, wherein the 3rd changeover module is an optical sensing subassembly.
3. LCD as claimed in claim 1, wherein this common voltage and this reference voltage interconnect.
4. LCD as claimed in claim 1, wherein this liquid crystal capacitance is formed by a pixel electrode, a liquid crystal layer and the community electrode institute storehouse of this LCD, and this storage capacitors then is to be formed by this pixel electrode of this LCD, a dielectric layer and community electrode line institute storehouse.
5. LCD as claimed in claim 4, wherein this common electrode lines also comprises a vertical structure, the edge of this pixel electrode of layout and extend along this data line.
6. LCD as claimed in claim 4, wherein this pixel electrode covers the some of the 3rd drain electrode and the 3rd grid.
7. LCD as claimed in claim 4, wherein this pixel electrode covers the some of the 3rd source electrode and the 3rd grid.
8. LCD, it comprises
One substrate has a plurality of first and reads pixel and a plurality of second to read pixel formed thereon;
One sense wire joint sheet is arranged in the zone, an edge of this substrate;
One gate line and data line cross arrangement each other;
One first sense wire is arranged in parallel with this data line, is connected to this sense wire joint sheet in order to should a plurality of first to read pixel; And
One second reading outlet is arranged in parallel with this data line, is connected to this sense wire joint sheet in order to should a plurality of second to read pixel.
9. LCD as claimed in claim 8, it also comprises this fringe region that at least one gate line joint sheet is arranged in this substrate.
10. LCD as claimed in claim 8, it also comprises this fringe region that at least one data line joint sheet is arranged in this substrate.
11. LCD as claimed in claim 8, wherein this first is read pixel and also comprises:
One first changeover module, it has a first grid that is connected with this gate line, one first drain electrode that is connected with this data line, and with a liquid crystal capacitance and interconnective one first source electrode of a storage capacitors of this LCD, wherein this liquid crystal capacitance and this storage capacitors are connected to a common voltage of this LCD again;
One second changeover module, it has the second grid that this gate line was connected, one second drain electrode that links to each other with this first grid and one second source electrode that is connected with this first sense wire; And
One the 3rd changeover module, it has one the 3rd grid and one the 3rd drain electrode is connected to a reference voltage simultaneously, and one the 3rd source electrode second drains and to interconnect with this.
12. LCD as claimed in claim 11, wherein the 3rd changeover module is an optical sensing subassembly.
13. LCD as claimed in claim 11, wherein this common voltage and this reference voltage interconnect.
14. a LCD, it comprises:
One substrate is formed with one first and one second insulation course in regular turn on this substrate, and has more a plurality of first and second on this substrate and read pixel;
One first and one second reading outlet is read pixel in order to connect this a plurality of first and second respectively;
One first peripheral cabling and one second peripheral cabling alternately are formed on this first and second insulation course, in order to connect respectively this first with this second reading outlet.
15. LCD as claimed in claim 14, wherein the spacing between this first peripheral cabling and this second periphery is less than 10 μ m.
16. LCD as claimed in claim 14, wherein this first insulation course is a glass substrate.
17. LCD as claimed in claim 14, wherein this first with this second peripheral cabling layout in the zone, an edge of this substrate.
18. LCD as claimed in claim 14 wherein also comprises the edge zone of a sense wire joint sheet layout at this substrate.
19. LCD as claimed in claim 14, wherein this first is read pixel and also comprises:
One first changeover module, it has a first grid that is connected with gate line, one first drain electrode that is connected with data line, and with a liquid crystal capacitance and interconnective one first source electrode of a storage capacitors of this LCD, wherein this liquid crystal capacitance and this storage capacitors are connected to a common voltage of this LCD again;
One second changeover module, it has the second grid that this gate line was connected, one second drain electrode that links to each other with this first grid and one second source electrode that is connected with this first sense wire; And
One the 3rd changeover module, it has one the 3rd grid and one the 3rd drain electrode is connected to a reference voltage simultaneously, and one the 3rd source electrode and the 3rd drains and to interconnect.
20. LCD as claimed in claim 19, wherein the 3rd changeover module is an optical sensing subassembly.
21. LCD as claimed in claim 19, wherein this common voltage and this reference voltage interconnect.
22. a LCD, it comprises:
One gate line and a data line, it is cross arrangement each other;
One sense wire is arranged in parallel with this data line;
One first changeover module, it has a first grid that is connected with this gate line, be connected with this data line one first the drain electrode, and with interconnective one first source electrode of a pixel electrode of this LCD;
One second changeover module, it has the second grid that this gate line was connected, one second drain electrode that links to each other with this first grid and one second source electrode that is connected with this sense wire; And
One the 3rd changeover module is connected with this second drain electrode, and the 3rd changeover module more comprises one the 3rd grid, one the 3rd drain electrode and one the 3rd source electrode,
Wherein, this pixel electrode covers the some of the 3rd grid.
23. LCD as claimed in claim 22, wherein the 3rd changeover module is an optical sensing subassembly.
24. LCD as claimed in claim 22, wherein this pixel electrode covers the some of the 3rd drain electrode.
25. LCD as claimed in claim 22, wherein this pixel electrode covers the some of the 3rd source electrode.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610084258XA CN100504556C (en) | 2006-05-30 | 2006-05-30 | LCD panel and display having input function |
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| Application Number | Priority Date | Filing Date | Title |
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| CNB200610084258XA CN100504556C (en) | 2006-05-30 | 2006-05-30 | LCD panel and display having input function |
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| Publication Number | Publication Date |
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| CN101082744A CN101082744A (en) | 2007-12-05 |
| CN100504556C true CN100504556C (en) | 2009-06-24 |
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| CNB200610084258XA Active CN100504556C (en) | 2006-05-30 | 2006-05-30 | LCD panel and display having input function |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995696A (en) * | 2009-08-19 | 2011-03-30 | 硅工厂股份有限公司 | Touch screen liquid crystal display device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101825788B (en) | 2009-03-04 | 2012-11-21 | 北京京东方光电科技有限公司 | Touch display, TFT-LCD (Thin Film Transistor Liquid Crystal Display) array substrate and manufacture method thereof |
| CN101976672B (en) * | 2010-09-01 | 2012-06-20 | 华映视讯（吴江）有限公司 | Optical sensing subassembly array substrate and manufacturing method thereof |
| TWI554993B (en) | 2012-11-20 | 2016-10-21 | 劍揚股份有限公司 | Display driving circuit with photo detecting input |
| CN108830228A (en) * | 2018-06-20 | 2018-11-16 | 厦门天马微电子有限公司 | The driving method of display panel, display device and display panel |
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2006
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101995696A (en) * | 2009-08-19 | 2011-03-30 | 硅工厂股份有限公司 | Touch screen liquid crystal display device |
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| CN101082744A (en) | 2007-12-05 |
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