CN101441538A - Structure of touch control type apparatus and touch control type display panel - Google Patents
Structure of touch control type apparatus and touch control type display panel Download PDFInfo
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- CN101441538A CN101441538A CNA2008101861892A CN200810186189A CN101441538A CN 101441538 A CN101441538 A CN 101441538A CN A2008101861892 A CNA2008101861892 A CN A2008101861892A CN 200810186189 A CN200810186189 A CN 200810186189A CN 101441538 A CN101441538 A CN 101441538A
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Abstract
The invention discloses a structure for a touch control device and a touch control display panel. The touch control device comprises a patterned sensing electrode structure, an insulating layer and a patterned sharing electrode layer. The patterned sensing electrode structure is arranged on the surface of a substrate defined with a plurality of display areas and a shading area, wherein the display areas are exposed corresponding to the shading area. The insulating layer covers the patterned sensing electrode structure. The patterned sharing electrode layer is arranged on the surface of the insulating layer, and comprises a plurality of electrode parts corresponding to the display areas and a plurality of connecting parts arranged between adjacent electrode parts and electrically connected to the electrode parts. The touch control device provides the patterned sensing electrode structure corresponding to the shade area, coordinately provides the electrode parts of the patterned sharing electrode layer corresponding to the display areas, and reduces area of the connecting parts to reduce superposition area of the patterned sensing electrode structure and the patterned sharing electrode layer, so as to reduce coupling capacitance thereof and promote intensity of sensed signals sensed by the patterned sensing electrode structure.
Description
Technical field
The present invention relates to a kind of structure and touch control display panel of touch-control device.
Background technology
(liquid crystal display is a kind of flat-panel screens that is widely used most at present LCD) to LCD, has features such as the thin light weight of power saving and type.And in the various electronic installations that comprise LCD, such as electronic installations such as multimedia player, mobile phone or PDA(Personal Digital Assistant), the function of utilizing LCD to carry out the touch-control input gradually becomes popular, that is the application of touch panel more and more widely.
The tradition touch control display panel is based on electric resistance type touch control display panel and capacitance type touch control display panel, electric resistance type touch control display panel is located touch position with voltage drop, capacitance type touch control display panel comprises sense capacitance usually, according to capacitance variations, orient touch position through signal Processing corresponding to the sense capacitance of touch points.Because known touch control display panel separates making with contact panel and display panels, again contact panel and display panels are fitted together, shortcoming such as therefore have that weight is heavier, cost is higher and transmittance is lower, in order to solve above-mentioned shortcoming, recently develop that touch control component and display module are made on the same panel, to form a display panels with touch controllable function.The touch control component of general known touch control display panel is arranged between substrate and the display module, make the sensor pad in the touch control component can produce coupling capacitance with shared electrode on the colored filter substrate that originally is positioned at display panels, therefore sensor pad can be subjected to the influence of this coupling capacitance when the known touch control display panel of finger touches, and causes the problem of the sensing signal undercapacity of generation.
Summary of the invention
Technical matters to be solved by this invention is, a kind of structure and touch control display panel of touch-control device is provided, and with reduction sensing electrode and shared interelectrode coupling capacitance, and strengthens induced signal.
For reaching above-mentioned purpose, the structure fabrication that the invention provides a kind of touch-control device is in a substrate surface, and substrate surface definition has a plurality of sensing areas that are arrayed, and definition has a plurality of viewing areas that are arrayed and is located at a shading region between the viewing area in each sensing area.The structure of above-mentioned touch-control device comprises a patterning sensing electrode structure, an insulation course and a patterned shared electrode layer.Patterning sensing electrode structure is located on the surface of substrate, and corresponding to shading region, and expose the viewing area.Insulation course is covered on substrate and the patterning sensing electrode structure.The patterned shared electrode layer is located on the surface of insulation course, and the patterned shared electrode layer comprises a plurality of electrode part and a plurality of connecting portion corresponding to the viewing area.Connecting portion is located at respectively between the adjacent electrode part, and strides across shading region, and is electrically connected at electrode part.
For reaching above-mentioned purpose, the invention provides a kind of touch control display panel, it comprises one first substrate, one second substrate, a liquid crystal layer, a patterning sensing electrode structure, an insulation course and a patterned shared electrode layer.First substrate is parallel to each other relative with second substrate, and first substrate has a substrate surface with respect to second substrate.Substrate surface definition has a plurality of sensing areas, and definition has a plurality of viewing areas that are arrayed and is located at a shading region between the viewing area in each sensing area.Liquid crystal layer is located between first substrate and second substrate.Patterning sensing electrode structure is located at substrate surface, and corresponding to shading region, and expose the viewing area.Insulation course is covered in the surface of substrate surface and patterning sensing electrode structure.The patterned shared electrode layer is located on the surface of insulation course, and the patterned shared electrode layer comprises a plurality of electrode part and a plurality of connecting portions corresponding to the viewing area, is located between the adjacent electrode portion respectively and is electrically connected at electrode part.
The invention provides patterning sensing electrode structure corresponding to shading region, and cooperation provides the area of the electrode part of patterned shared electrode layer corresponding to viewing area and reduction connecting portion, to reduce the overlapping area of patterning sensing electrode structure and patterned shared electrode layer, thereby minimizing coupling capacitance therebetween, and promote the induced signal intensity that patterning induction electrode structure is responded to.
Description of drawings
Fig. 1 is the cross-sectional view of the touch control display panel of the present invention's first preferred embodiment;
Fig. 2 is the structural representation of the touch control display panel of the present invention's first preferred embodiment;
Fig. 3 is for looking synoptic diagram on the patterning sensing electrode structure of the present invention;
Fig. 4 is the cross-sectional view of the touch-control device of the present invention's second preferred embodiment;
Fig. 5 is the structural representation of the touch-control device of the present invention's second preferred embodiment;
Fig. 6 is the cross-sectional view of the touch-control device of the present invention's the 3rd preferred embodiment;
Fig. 7 is the structural representation of the touch-control device of the present invention's the 3rd preferred embodiment.
Wherein, Reference numeral:
10 touch control display panels, 12 first substrates
14 second substrates, 16 liquid crystal layers
18 touch-control device structures, 20 substrate surfaces
22 sensing areas, 24 viewing areas
26 shading regions, 28 sub-pixels
30 patterning sensing electrode structures, 32 first insulation courses
34 patterned shared electrode layers, 36 electrode part
38 connecting portions, 40 first horizontal directions
42 second horizontal directions, 44 chromatic filter layers
46 patterning black-matrix layer 48 the 3rd insulation course
The 52 first sensing serials of 50 separation materials
54 second sensing serials, 56 sensor pads
58 bridging lines, 60 patterning anti-reflecting layers
62 touch-control input devices, 100 touch-control device structures
Transparent floating electrode layer 104 second insulation course of 102 patternings
106 patterning sensing electrode structures, 108 electrode blocks
110 second horizontal linear parts 112 first horizontal linear parts
150 touch-control device structures, 152 shared electrode layer
154 separation materials
Embodiment
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the cross-sectional view of the touch control display panel of the present invention's first preferred embodiment, and Fig. 2 is the structural representation of the touch control display panel of the present invention's first preferred embodiment.As Fig. 1 and shown in Figure 2, touch control display panel 10 includes the structure 18 of first substrate 12, second substrate 14, liquid crystal layer 16 and touch-control device.First substrate 12 is parallel to each other relative with second substrate 14, first substrate 12 has substrate surface 20 with respect to second substrate 14, and substrate surface 20 definition have a plurality of sensing areas 22, definition has a plurality of viewing areas 24 that are arrayed and is located at shading region 26 between the viewing area 24 in each sensing area 22, wherein first substrate 12 can be glass substrate, transparency carrier such as quartz base plate or plastic base, second substrate 14 can be thin film transistor base plate, demonstration with correspondence control viewing area 24, but not as limit, this is known by those skilled in the art, therefore repeats no more.In addition, liquid crystal layer 16 is located between first substrate 12 and second substrate 14.And substrate surface 20 definition in addition has a plurality of sub-pixels 28 that are arrayed, corresponds respectively to each viewing area 24.
In addition, as shown in Figure 1, the structure 18 of touch-control device is made in the substrate surface 20 of first substrate 12, and the structure 18 of touch-control device comprises patterning sensing electrode structure 30, first insulation course 32 and patterned shared electrode layer 34.First insulation course 32 is covered on the substrate surface 20 and patterning sensing electrode structure 30 of first substrate 12, and patterned shared electrode layer 34 is located on the surface of first insulation course 32.And, as shown in Figure 2, patterned shared electrode layer 34 comprises a plurality of electrode part (electrode portion) 36 and a plurality of connecting portions (connection portion) 38 corresponding to viewing area 24, connecting portion 38 is located at respectively between the adjacent electrode part 36, stride across shading region 26, and be electrically connected at electrode part 36.In the present embodiment, patterned shared electrode layer 34 comprises netted (mesh) pattern or a plurality of parallel strip pattern, be made of electrode part 36 and connecting portion 38, and the width of connecting portion 38 is less than the width of electrode part 36.But connecting portion 38 of the present invention also can only be connected on first horizontal direction 40 or adjacent electrode part 36 on second horizontal direction 42, and wherein first horizontal direction 40 (for example being directions X) is rough vertical with second horizontal direction 42 (for example being the Y direction).In addition, patterned shared electrode layer 34 can be made of tin indium oxide (ITO) or indium zinc oxide transparent conductive materials such as (IZO), but is not limited thereto.
As shown in Figure 1, the structure 18 of touch-control device can include chromatic filter layer 44, patterning black-matrix layer 46, the 3rd insulation course 48 and a plurality of separation material 50 in addition.Chromatic filter layer 44 is located at first insulation course, 32 surfaces, and chromatic filter layer 44 comprises a plurality of Red lightscreening plates, a plurality of green color filter and a plurality of blue color filter, each Red lightscreening plate, each green color filter and each blue color filter correspond respectively to each sub-pixel 28, by the synthetic pixel of three kinds of color-set.Patterning black-matrix layer 46 is located at chromatic filter layer 44 surfaces and is exposed viewing area 24, and wherein patterning black-matrix layer 46 can be made of light screening materials such as metal or black resins.The 3rd insulation course 48 overlay pattern black-matrix layer 46 and chromatic filter layer 44 surfaces and being located between patterned shared electrode layer 34 and patterning black-matrix layer 46 and the chromatic filter layer 44 are to use as flatness layer (over coat).Separation material 50 is located on the 3rd insulation course 48 and is located between the patterned shared electrode layer 34.
In addition, as shown in Figure 1, the patterning sensing electrode structure 30 of present embodiment is located on the substrate surface 20, and corresponding to shading region 26, and expose viewing area 24.And, in order more to clearly demonstrate the pattern of patterning sensing electrode structure 30, please refer to Fig. 3, Fig. 3 is for looking synoptic diagram on the patterning sensing electrode structure of the present invention.As shown in Figure 3, the patterning sensing electrode structure 30 of present embodiment comprises orthogonal staggered a plurality of first sensing serials 52 (for example being the serial of X sensing) and a plurality of second sensing serials 54 (for example being the serial of Y sensing), and each first sensing serial 52 has a plurality of sensor pads 56 and a plurality of bridging lines 58 respectively with each second sensing serial 54, wherein the bridging line 58 of each second sensing serial 54 is electrically connected the sensor pad 56 of this second sensing serial 54 along first horizontal direction 40, and the bridging line 58 of each first sensing serial 52 is electrically connected the sensor pad 56 of this first sensing serial 52 along second horizontal direction 42.In the present embodiment, the bridging line 58 of the first sensing serial 52 and each first sensing serial 52 belong to the first metal layer with the sensor pad 56 of each second sensing serial 54, and the first metal layer is arranged on first substrate 12,58 of the bridging lines of the second sensing serial 54 belong to second metal level, and second metal level is located on the first metal layer, the present invention is not limited to this, also can be located on first substrate 12 by second metal level, and the first metal layer is located on second metal level.In the present embodiment, comprise a sensor pad 56 in each sensing area 28 respectively, but be not limited thereto, can comprise sensor pads 56 of the one first sensing serial 52 or the second sensing serial 54 in each sensing area 28 of the present invention at least, for example comprise in the sensing area that four is adjacent and be the sensor pad 56 of matrix shape.In addition, patterning sensing electrode structure 30 can be molybdenum (Mo), aluminium (Al), chromium (Cr) and alloy thereof, for example be that molybdenum aluminium alloy or other conductive material constitute, but the present invention is not as limit.
Refer again to Fig. 1, it should be noted that the structure 18 of touch-control device comprises patterning anti-reflecting layer 60 in addition, it has the pattern that is same as patterning sensing electrode structure 30, and is located between the patterning sensing electrode structure 30 and first substrate 12.Wherein patterning anti-reflecting layer 60 can be anti-light reflecting material such as metal oxide and constitutes, and produces the situation of dazzling light when the irradiation pattern sensing electrode structure 30 effectively to avoid light.
Utilize the structure of the touch control display panel 10 of above-mentioned present embodiment, touch-control input device 62 when the external world, finger is for example touched when the sensing area 28 of touch control display panel 10 surperficial, the sensor pad 56 of this sensing area 28 can produce induced signal, thereby the position that can orient this sensing area 28.And, the electrode part of the patterned shared electrode layer 34 of present embodiment is corresponding to viewing area 24, and patterning sensing electrode structure 30 is corresponding to shading region 26, the patterned shared electrode layer 34 and the overlapping area of patterning sensing electrode structure 30 are reduced, to help to reduce coupling capacitance between the two, thereby can increase the induced signal intensity that is produced, more the induced signal that can avoid sensor pad 56 to be produced is subjected to the influence of the coupling capacitance of 30 on patterned shared electrode layer 34 and patterning sensing electrode structure.
The present invention is except that above-mentioned first preferred embodiment, other has other preferred embodiment, will be in hereinafter explanation in regular turn, and for ease of comparing the similarities and differences of various embodiments of the present invention, second preferred embodiment is hereinafter described used the identical identical assembly of element numbers mark with aforementioned first preferred embodiment, and no longer same components is repeated to give unnecessary details.Please refer to Fig. 4 and Fig. 5, Fig. 4 is the cross-sectional view of the touch-control device of the present invention's second preferred embodiment, and Fig. 5 is the structural representation of the touch-control device of the present invention's second preferred embodiment.As shown in Figure 4, with respect to first preferred embodiment, the structure 100 of the touch-control device of present embodiment comprises transparent floating electrode layer 102 of a patterning and one second insulation course 104 in addition.The transparent floating electrode layer 102 of patterning is located between first substrate 12 and the patterning sensing electrode structure 106, and second insulation course 104 is located between transparent floating electrode layer 102 of patterning and the patterning sensing electrode structure 106.It should be noted that the transparent floating electrode layer 102 of patterning is not electrically connected to any power source, promptly it electrically is in floating.And the transparent floating electrode layer 102 of patterning can be made of transparent conductive materials such as tin indium oxide or indium zinc oxides, but is not limited thereto.In addition, as shown in Figure 5, the transparent floating electrode layer 102 of patterning comprises a plurality of electrode blocks 108, corresponds respectively at least one sensor pad 56.In present embodiment, each electrode block 108 is corresponding to the sensor pad 56 of the one first sensing serial or the second sensing serial, but electrode block of the present invention is not limited to only corresponding to a sensor pad.In an alternate embodiment, each electrode block 108 can be corresponding to two adjacent in first sensing serial sensor pads, and in another alternate embodiment, each electrode block 108 can be corresponding to two adjacent in second sensing serial sensor pads.Perhaps, in another alternate embodiment, each electrode block 108 also can corresponding to four adjacent and be the sensor pad that matrix shape is arranged, wherein two sensor pads are positioned in the same first sensing serial, two sensor pads then are positioned in the same second sensing serial in addition.
In addition, it should be noted that, present embodiment comprises that with another different being in the patterning sensing electrode structure 106 of present embodiment of first preferred embodiment orthogonal staggered a plurality of second horizontal linear parts 110 that are provided with along second horizontal direction 42 are provided with the first horizontal linear parts 112 with a plurality of along first horizontal direction 40, correspond respectively to the part of patterning black-matrix layer 46, and the width of the second horizontal linear parts 110 and the first horizontal linear parts 112 can be smaller than the width of pairing patterning black-matrix layer 46 these parts.
Hence one can see that, present embodiment is used in the transparent floating electrode layer 102 of patterning is set between the patterning sensing electrode structure 106 and first substrate 12, and the large tracts of land by the transparent floating electrode layer 102 of patterning, with the inductance capacitance of raising touch-control input device 62, thereby increase the induced signal intensity that patterning induction electrode structure 106 is responded to patterning sensing electrode structure 106.And, present embodiment is also by the second horizontal linear parts 110 of reduction patterning sensing electrode structure 106 and the width of the first horizontal linear parts 112, to increase the distance of 34 of patterning sensing electrode structure 106 and patterned shared electrode layers, thereby can reduce therebetween coupling capacitance, be subjected to the influence of this coupling capacitance and reduce with the induced signal of avoiding patterning sensing electrode structure 106 to be produced.
Please refer to Fig. 6 and Fig. 7, Fig. 6 is the cross-sectional view of the touch-control device of the present invention's the 3rd preferred embodiment, and Fig. 7 is the structural representation of the touch-control device of the present invention's the 3rd preferred embodiment.For ease of comparing the similarities and differences of various embodiments of the present invention, the 3rd preferred embodiment is hereinafter described used the identical identical assembly of element numbers mark with aforementioned second preferred embodiment, and no longer same components is repeated to give unnecessary details.As Fig. 6 and shown in Figure 7, compared to second embodiment, the shared electrode layer 152 of the structure 150 of the touch-control device of present embodiment does not have pattern structure, and is covered on the 3rd insulation course 48, and is a flat shape.And the separation material 154 of present embodiment is arranged on the shared electrode layer 152 and is positioned at shading region 26.
In sum, the structure of touch-control device that the invention provides the reticulate texture of patterning sensing electrode respective outer side edges patterned shared electrode layer and dwindle the width of patterning sensing electrode structure, to reduce patterning sensing electrode structure and the overlapping area of patterned shared electrode layer or distance therebetween, thereby reduce therebetween coupling capacitance, be subjected to the coupling capacitance influence and reduce with the induced signal of avoiding patterning sensing electrode structure to be responded to.And the present invention provides patterning transparent floating electrode layer in addition, with the inductance capacitance of raising touch-control input device and patterning sensing electrode structure, thereby increases the induced signal intensity that patterning induction electrode structure is responded to.
The above only is preferred embodiment of the present invention, and all equalizations of being done according to the present patent application claim change and modify, and all should belong to covering scope of the present invention.
Claims (21)
1, a kind of structure of touch-control device, be made in the surface of a substrate, it is characterized in that, this substrate surface definition has a plurality of sensing areas that are arrayed, definition has a plurality of viewing areas that are arrayed and is located at a shading region between these viewing areas in each this sensing area, and this structure comprises:
One patterning sensing electrode structure is located on the surface of this substrate, corresponding to this shading region, and exposes these viewing areas;
One first insulation course is covered on this substrate and this patterning sensing electrode structure; And
One patterned shared electrode layer, be located on the surface of this first insulation course, and this patterned shared electrode layer comprises corresponding to a plurality of electrode part of these viewing areas and a plurality of connecting portion, these connecting portions are located at respectively between these adjacent electrode part, stride across this shading region, and be electrically connected at these electrode part.
2, structure as claimed in claim 1 is characterized in that, this patterning sensing electrode structure comprises orthogonal staggered a plurality of first sensing serials and a plurality of second sensing serial.
3, structure as claimed in claim 2 is characterized in that, respectively this first sensing serial has a plurality of sensor pads and a plurality of bridging line respectively with this second sensing serial respectively.
4, structure as claimed in claim 3 is characterized in that, other comprises that the transparent floating electrode layer of a patterning is located between this substrate and this patterning sensing electrode structure.
5, structure as claimed in claim 4 is characterized in that, other comprises that one second insulation course is located between the transparent floating electrode layer of this patterning and this patterning sensing electrode structure.
6, structure as claimed in claim 5 is characterized in that, the transparent floating electrode layer of this patterning comprises a plurality of electrode blocks, corresponds respectively at least one this sensor pad.
7, structure as claimed in claim 1 is characterized in that, this patterned shared electrode layer comprises a net-like pattern, and it is made of these electrode part and these connecting portions.
8, structure as claimed in claim 1 is characterized in that, also comprises a patterning anti-reflecting layer, and it has the pattern that is same as this patterning sensing electrode structure, and is located between this patterning sensing electrode structure and this substrate.
9, structure as claimed in claim 1 is characterized in that, also comprises:
One chromatic filter layer is located at this first surface of insulating layer;
One patterning black-matrix layer is located at this color filter surfaces and is exposed these viewing areas; And
One the 3rd insulation course covers this patterning black-matrix layer and this color filter surfaces.
10, structure as claimed in claim 9 is characterized in that, comprises that the width of this patterning sensing electrode structure is smaller than the width of pairing this patterning black-matrix layer.
11, a kind of touch control display panel is characterized in that, it comprises:
One first substrate and one second substrate, parallel to each other relative, this first substrate has a substrate surface with respect to this second substrate, and the definition of this substrate surface has a plurality of sensing areas, and definition has a plurality of viewing areas that are arrayed and is located at a shading region between these viewing areas in each this sensing area;
One liquid crystal layer is located between this first substrate and this second substrate;
One patterning sensing electrode structure is located at this substrate surface, corresponding to this shading region and expose these viewing areas;
One first insulation course is covered in the surface of this substrate surface and this patterning sensing electrode structure; And
One patterned shared electrode layer is located on the surface of this first insulation course, and this patterned shared electrode layer comprises a plurality of electrode part and a plurality of connecting portions corresponding to these viewing areas, is located between these adjacent electrode part respectively and is electrically connected at these electrode part.
12, touch control display panel as claimed in claim 11 is characterized in that, this patterning sensing electrode structure comprises orthogonal staggered a plurality of first sensing serials and a plurality of second sensing serial.
13, touch control display panel as claimed in claim 12 is characterized in that, respectively this first sensing serial has a plurality of sensor pads and a plurality of bridging line respectively with this second sensing serial respectively.
14, touch control display panel as claimed in claim 13 is characterized in that, comprises that also the transparent floating electrode layer of a patterning is located between this first substrate and this patterning sensing electrode structure.
15, touch control display panel as claimed in claim 14 is characterized in that, comprises that also one second insulation course is located between the transparent floating electrode layer of this patterning and this patterning sensing electrode structure.
16, touch control display panel as claimed in claim 15 is characterized in that, the transparent floating electrode layer of this patterning comprises a plurality of electrode blocks, corresponds respectively at least one this sensor pad.
17, touch control display panel as claimed in claim 11 is characterized in that, this patterned shared electrode layer comprises a net-like pattern, and it is made of these electrode part and these connecting portions.
18, touch control display panel as claimed in claim 11 is characterized in that, also comprises a patterning anti-reflecting layer, its have the pattern that is same as this patterning sensing electrode structure and be located at this patterning sensing electrode structure and this first substrate between.
19, touch control display panel as claimed in claim 11 is characterized in that, also comprises:
One chromatic filter layer is located at this first surface of insulating layer;
One patterning black-matrix layer is located at this color filter surfaces and is exposed these viewing areas; And
One the 3rd insulation course covers this patterning black-matrix layer and this color filter surfaces.
20, touch control display panel as claimed in claim 19 is characterized in that, comprises that the width of this patterning sensing electrode structure is smaller than the width of pairing this patterning black-matrix layer.
21, touch control display panel as claimed in claim 11 is characterized in that, this substrate surface also defines a plurality of sub-pixels that are arrayed, corresponds respectively to this viewing area.
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