CN102955623B - Contact panel and electronic installation - Google Patents
Contact panel and electronic installation Download PDFInfo
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- CN102955623B CN102955623B CN201110239084.0A CN201110239084A CN102955623B CN 102955623 B CN102955623 B CN 102955623B CN 201110239084 A CN201110239084 A CN 201110239084A CN 102955623 B CN102955623 B CN 102955623B
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Abstract
The invention provides a kind of contact panel and electronic installation.Above-mentioned contact panel comprises a substrate, and it has one first sensing region and one second sensing region; Multiple first sensing electrode, is arranged in above-mentioned first sensing region and above-mentioned second sensing region; One sensing element, is arranged on aforesaid substrate, couples described first sensing electrode, and the input signal that above-mentioned sensing element produces sequentially is passed to described first sensing electrode being positioned at above-mentioned first sensing region and above-mentioned second sensing region; One dielectric layer, covers described first sensing electrode, and the thickness being wherein positioned at the above-mentioned dielectric layer of above-mentioned first sensing region is less than the thickness of the above-mentioned dielectric layer being positioned at above-mentioned second sensing region.Contact panel can avoid sensing signal to produce distortion phenomenon because of capacitive load impact, and not reducing in contact panel the resistance-capacitance load reduced under sensing electrode quantity on touch-control sensing circuit, the driving force of sensing element and the sensitivity characteristics of contact panel can be promoted.
Description
Technical field
The invention relates to a kind of contact panel, relate to a kind of capacitance type touch-control panel of high sensing sensitivity especially.
Background technology
Contact panel has been widely used in the electronic products such as mobile phone (intelligent mobile phone), personal digital assistant (PDA), Global Positioning System (GPS) (GPS), handheld game device, panel computer, to replace the input interface such as slide-mouse and keyboard device.And capacitance type touch-control panel is because having the advantages such as multi-point touch, antifouling, fire prevention, electrostatic prevention and dust, scratch resistance, reaction velocity be fast, it is the mainstream technology of contact panel now.Current capacitance type touch-control panel is because of application trend large scale development before.But, expansion because of panel size causes the sensing electrode increasing number in sensing region and the resistance-capacitance load (RCloading) of sense line is increased, above-mentioned resistance-capacitance load effect can cause signal attenuation, difficulty in sensing element (SensorIC) driving is improved, and the sensitivity of contact panel touch-control can be reduced.
Therefore, in this technical field, have and need a kind of contact panel, to meet the demand and to overcome the shortcoming of prior art.
Summary of the invention
In view of this, one embodiment of the invention provides a contact panel, and above-mentioned contact panel comprises a substrate, and it has one first sensing region and one second sensing region; Multiple first sensing electrode, is arranged in above-mentioned first sensing region and above-mentioned second sensing region; One sensing element, is arranged on aforesaid substrate, couples described first sensing electrode, and the input signal that above-mentioned sensing element produces sequentially is passed to described first sensing electrode being positioned at above-mentioned first sensing region and above-mentioned second sensing region; One dielectric layer, covers described first sensing electrode, and the thickness being wherein positioned at the above-mentioned dielectric layer of above-mentioned first sensing region is less than the thickness of the above-mentioned dielectric layer being positioned at above-mentioned second sensing region.
Another embodiment of the present invention provides an electronic installation, comprises a contact panel, and above-mentioned contact panel comprises a substrate, and it has one first sensing region and one second sensing region; Multiple first sensing electrode, is arranged in above-mentioned first sensing region and above-mentioned second sensing region; One sensing element, is arranged on aforesaid substrate, couples described first sensing electrode, and the input signal that above-mentioned sensing element produces sequentially is passed to described first sensing electrode being positioned at above-mentioned first sensing region and above-mentioned second sensing region; One dielectric layer, covers described first sensing electrode, and the thickness being wherein positioned at the above-mentioned dielectric layer of above-mentioned first sensing region is less than the thickness of the above-mentioned dielectric layer being positioned at above-mentioned second sensing region; One display panel, corresponding above-mentioned contact panel configuration; One controller, controls above-mentioned contact panel and above-mentioned display panel.
Contact panel of the present invention can avoid sensing signal to produce distortion phenomenon because of capacitive load impact, and can not reducing in contact panel the resistance-capacitance load (RCloading) reduced under sensing electrode quantity on touch-control sensing circuit, promote the driving force of sensing element and the sensitivity characteristics of contact panel, overall module thickness can't be affected.Therefore, in the sensing element of small size contact panel can being arranged at/large touch panel on sensing signal, manufacturing cost can greatly reduce.
Accompanying drawing explanation
Fig. 1 a is the top view of the contact panel of one embodiment of the invention.
Fig. 1 b is the sectional view along Fig. 1 aA-A ' tangent line.
Fig. 2 is the sectional view of the contact panel of another embodiment of the present invention.
Fig. 3 a is the top view of the present invention's contact panel of another embodiment again.
Fig. 3 b is the sectional view along Fig. 3 aA-A ' tangent line.
Fig. 4 a is the top view of the present invention's contact panel of another embodiment again.
Fig. 4 b is the sectional view along Fig. 4 aA-A ' tangent line.
Fig. 5 shows the electronic installation block schematic diagram with contact panel according to the embodiment of the present invention.
Drawing reference numeral:
200 ~ substrate;
202,202A, 202B, 202A1,202A2,202A3 ~ sensing electrode;
204 ~ bridging part;
210X1 ~ 210Xm, 210Y1 ~ 210Yn ~ wire;
212,212A, 212B, 212C ~ dielectric layer;
222 ~ flatness layer;
223 end faces;
224 ~ cover plate;
214 ~ sensing element;
300,300A, 300B, 300C ~ sensing region;
310,320 ~ direction;
500a, 500b, 500c, 500d ~ contact panel;
TA, TB, TC ~ thickness;
600 ~ electronic installation;
400 ~ display panel;
450 ~ controller.
Embodiment
To describe in detail with each embodiment below and along with the example of graphic explanation, as reference frame of the present invention.In graphic or instructions describe, similar or identical part all uses identical figure number.And in the drawings, the shape of embodiment or thickness can expand, and to simplify or conveniently to indicate.Moreover in graphic, the part of each element will to describe explanation respectively, and it should be noted that in figure the element not illustrating or describe, be the form known to art technician.
Fig. 1 a is the top view of the contact panel 500a of one embodiment of the invention.Fig. 1 b is the sectional view along Fig. 1 aA-A ' tangent line.The contact panel of the embodiment of the present invention is a capacitance type touch-control panel.Please refer to Fig. 1 a and Fig. 1 b, contact panel 500a comprises a substrate 200.In an embodiment of the present invention, the material of substrate 200 can be glass, polycarbonate, Polyvinylchloride or methyl methacrylate, and substrate 200 has sensing region 300.Multiple sensing electrode 202, is arranged in sensing region 300.In an embodiment of the present invention, sensing electrode 202 can comprise multiple sensing electrode 202A of arranging in the form of an array and multiple the sensing electrode 202B arranged in the form of an array, sensing electrode 202A and sensing electrode 202B arrange in an interleaved manner and be electrically insulated each other.Above-mentioned sensing electrode 202A couples to form multiple sensing electrode row (X1 ~ Xm row) along a direction 310 by a bridging part 204 in a series arrangement, and sensing electrode 202B is connected to each other to form multiple row of sense electrodes (Y1 ~ Yn is capable) along a direction 320 in a series arrangement.As shown in Figure 1a, direction 300 and direction 320 can be orthogonal.In the present embodiment, direction 300 is X-direction, and direction 320 is Y direction, and therefore sensing electrode 202A can be considered X-direction sensing electrode 202A, and sensing electrode 202B can be considered Y direction sensing electrode 202B.In an embodiment of the present invention, the material of sensing electrode 202 can comprise tin indium oxide (ITO) or indium zinc oxide (IZO).
As shown in Figure 1a, sensing element 214 is arranged on substrate 200, the sensing electrode 202A being arranged in sensing region 300A X1 ~ Xm and arranging is coupled to by wire 210X1 ~ 210Xm, in order to input voltage pulse signal to the sensing electrode 202A in sensing region 300, then the sensing signal that sensing electrode 202A, 202B of being arranged in sensing region 300 by wire 210Y1 ~ 210Yn reception are exported with the inductance capacitance change of finger contact contact panel because user.Therefore, wire 210X1 ~ 210Xm can be considered and drives wire (drivingline) 210X1 ~ 210Xm, and wire 210Y1 ~ 210Yn can be considered sensing wire (sensingline) 210Y1 ~ 210Yn.Therefore, the input signal that sensing element 214 produces can sequentially be passed to by wire 210X1 ~ 210Xm sensing electrode 202A1,202A2 and 202A3 of being positioned at sensing region 300A, 300B and 300C.It should be noted that, sensing electrode 202A in sensing region 300A, 300B and 300C is to the capacitive load meeting of touch-control sensing circuit and the distance dependent between itself and wire 210X1 ~ 210Xm end, as shown in Figure 1a, the distance between sensing region 300A, 300B and 300C and wire 210 end (and sensing electrode 202A couple one end) is for sequentially to increase.So, sensing electrode 202A in sensing region 300A, 300B and 300C is to the capacitive load of touch-control sensing circuit for sequentially to increase, and the meaning i.e. sensing electrode 202A of distance wire 210 end sensing region 300C is farthest maximum to the capacitive load of touch-control sensing circuit.In the present embodiment, because the sensing electrode 202B of Y direction is connected to sensing element 214 by sensing wire 210Y1 ~ 210Yn, and sensing wire 210Y1 ~ 210Yn is in order to receive sensing signal, does not thus consider the capacitive load effect of sensing electrode 202B to touch-control sensing circuit.
In order to compensate different sensing region 300A, 300B and 300C capacitive load difference to touch-control sensing circuit, the dielectric layer that one deck has different-thickness can be set on the sensing electrode 202 of sensing region 300, compensate above-mentioned capacitive load difference.As shown in Figure 1 b, contact panel 500a comprises a dielectric layer 212, and cover sensing electrode 202, part of dielectric layer 212A, 212B and 212C of being wherein positioned at sensing region 300A, 300B and 300C have different thickness TA, TB and TC respectively.In an embodiment of the present invention, due to the sensing electrode 202A in sensing region 300A, 300B and 300C to the capacitive load of touch-control sensing circuit for sequentially to increase, so thickness TA, TB and TC of dielectric layer 212A, 212B and 212C are designed to TA < TB < TC.Therefore, the pass of capacitance C1, C2 and C3 of dielectric layer 212A, 212B and 212C is C1 > C2 > C3.By depositing operation, and follow-up use half mode light shield (halftonemask) arranges in pairs or groups lithography process to form the dielectric layer 212 with different-thickness TA, TB and TC.In an embodiment of the present invention, the material of dielectric layer 212 can be comprise monox, nitride (SiNx) inorganic material or can be the organic material comprising photoresistance.Fig. 1 b only for illustration of with wire 210 end at a distance of different distance sensing region 300A, 300B and 300C corresponding to the thickness of dielectric layer 212, for convenience of description, the number of sensing electrode 202A1,202A2 and 202A3 in sensing region 300A, 300B and 300C is with one for representative, and bridging part 204 will not show at this figure.
As shown in Figure 1 b, when user is with dielectric layer 212A, 212B or 212C of finger contact contact panel 500a, be positioned at the sensing signal that sensing region 300A, 300B or 300C sensing electrode 202A1,202A2 or 202A3 can produce different capacitance C1, C2 or C3.Because the dielectric layer 212 in sensing region 300A, 300B or 300C can design, there is different thickness.Therefore sensing region 300A, 300B and 300C can be made to be homogeneous to the capacitive load of touch-control sensing circuit, to avoid sensing signal to produce distortion phenomenon because of capacitive load impact, and the driving force of sensing element and the sensitivity characteristics of contact panel can be promoted.
Fig. 2 is the sectional view of the contact panel 500b of another embodiment of the present invention, above-mentioned graphic in each element if any with same or analogous part shown in Fig. 1 a and Fig. 1 b, then can describe with reference to above relevant, not do repeat specification at this.As shown in Figure 2, contact panel 500b more can comprise a flatness layer 222, covers dielectric layer 212, and makes an end face 223 of flatness layer 222 be essentially a plane.In an embodiment of the present invention, the material of flatness layer 222 can be the organic material that comprises epoxy resin, pi or methyl methacrylate or photoresistance or can be the inorganic material etc. comprising monox, nitride (SiNx).One cover plate 224, is arranged on flatness layer 222.In an embodiment of the present invention, the material of cover plate 224 can be glass.
Fig. 3 a is the top view of the present invention contact panel 500c of another embodiment again.Fig. 3 b is the sectional view along Fig. 3 aA-A ' tangent line, and for convenience of description, the number of sensing electrode 202A1,202A2 and 202A3 in sensing region 300A, 300B and 300C is with one for representative, and bridging part 204 will not show at this figure.In the embodiment shown in Fig. 3 a, Fig. 3 b, sensing element 214 is coupled to the sensing electrode 202A being arranged in sensing region 300C different lines by wire 210, in order to input voltage pulse signal to the sensing electrode 202A in sensing region 300, or receive the sensing signal that the sensing electrode 202A that is arranged in sensing region 300 exports with the inductance capacitance change of finger contact contact panel because user.Therefore, the input signal that sensing element 214 produces sequentially can be passed to sensing electrode 202A3,202A2 and 202A1 of being positioned at sensing region 300C, 300B and 300A.So, sensing electrode 202A in sensing region 300C, 300B and 300A to the capacitive load of touch-control sensing circuit for sequentially to increase, so thickness TA, TB and TC of dielectric layer 212A, 212B and 212C are designed to TA > TB > TC.Therefore, the pass of capacitance C1, C2 and C3 of dielectric layer 212A, 212B and 212C is C1 < C2 < C3.
Fig. 4 a is the top view of the present invention contact panel 500d of another embodiment again.Fig. 4 b is the sectional view along Fig. 4 aA-A ' tangent line, and for convenience of description, the number of sensing electrode 202A1,202A2 and 202A3 in sensing region 300A, 300B and 300C is with one for representative, and bridging part 204 will not show at this figure.In the embodiment shown in Fig. 4 a, Fig. 4 b, sensing element 214 is coupled to the sensing electrode 202A being arranged in sensing region 300A and 300C different lines respectively by wire 210, in order to input voltage pulse signal to the sensing electrode 202A in sensing region 300, or receive the sensing signal that the sensing electrode 202A that is arranged in sensing region 300 exports with the inductance capacitance change of finger contact contact panel because user.Therefore, the input signal that sensing element 214 produces can be passed to from sensing electrode 202A3 and 202A1 in sensing region 300A and 300C the sensing electrode 202A2 being positioned at sensing region 300B respectively.So, the capacitive load of sensing electrode 202A to touch-control sensing circuit of sensing region 300C and 300A is substantially identical, and the sensing electrode 202A be less than in sensing region 300B is to the capacitive load of touch-control sensing circuit, so thickness TA, TB and TC of dielectric layer 212A, 212B and 212C are designed to TA=TC < TB.Therefore, the pass of capacitance C1, C2 and C3 of dielectric layer 212A, 212B and 212C is C1=C3 > C2.
The embodiment of the present invention provides a kind of contact panel.The sensing electrode of above-mentioned contact panel in different sensing region is arranged the dielectric layer with different-thickness, to cause different capacitances to compensate the capacitive load of different sensing region to touch-control sensing circuit, sensing signal is avoided to produce distortion phenomenon because of capacitive load impact, and can not reducing in contact panel the resistance-capacitance load (RCloading) reduced under sensing electrode quantity on touch-control sensing circuit, promote the driving force of sensing element and the sensitivity characteristics of contact panel, overall module thickness can't be affected.Therefore, in the sensing element of small size contact panel can being arranged at/large touch panel on sensing signal, manufacturing cost can greatly reduce.In addition, the contact panel of the embodiment of the present invention can be applicable to sensing electrode and is formed on the contact panel of substrate both sides respectively, it is such as double-deck tin indium oxide (D-ITO) contact panel, or can be applicable to sensing electrode is all formed on the contact panel of substrate the same side, be such as mono-layer oxidized indium tin (S-ITO) contact panel or monolithic external hanging type structure WIS (WindowIntegratedSensor, form integrated touch control inductor).
Fig. 5 shows electronic installation 600 block schematic diagram with contact panel according to the embodiment of the present invention.In the present embodiment, electronic installation 600 may be implemented in: a mobile phone, a digital camera, a notebook computer, a personal digital assistant, a desktop computer or a televisor.Electronic installation 600 comprises: a contact panel 500 (as shown in Fig. 1 a, Fig. 3 a, Fig. 4 a), a display panel 400, and corresponding contact panel 500 configures, and a controller 450, controls contact panel 500 and display panel 400.In the present embodiment, display panel 400 can comprise a liquid crystal display (liquidcrystaldisplay, LCD) or one active display (light-emittingdisplay, LED), such as plane torsion formula (in-planeswitching) liquid crystal display or organic light emitting display (organiclight-emittingdisplay, OLED).
Although the present invention discloses as above with embodiment; so itself and be not used to limit the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when doing a little change and retouching, therefore protection scope of the present invention is when being as the criterion of defining with claim.
Claims (11)
1. a contact panel, is characterized in that, described contact panel comprises:
One substrate, it has one first sensing region and one second sensing region, and described first sensing region is positioned at the both sides of described second sensing region;
Multiple first sensing electrode, is arranged in described first sensing region and described second sensing region;
One sensing element, be arranged on described substrate, described sensing element couples described first sensing electrode by many sensing wires, the input signal that described sensing element produces sequentially is passed to described first sensing electrode being positioned at described first sensing region and described second sensing region, and more described second sensing region of described first sensing region is close to the end of described many sensing wires; And
One dielectric layer, covers described first sensing electrode, and the thickness being wherein positioned at the described dielectric layer of described first sensing region is less than the thickness of the described dielectric layer being positioned at described second sensing region.
2. contact panel as claimed in claim 1, it is characterized in that, described contact panel more comprises:
One flatness layer, covers described dielectric layer, and an end face of wherein said flatness layer is essentially a plane; And
One cover plate, is arranged on described flatness layer.
3. contact panel as claimed in claim 2, it is characterized in that, the material of described flatness layer comprises monox, nitride, epoxy resin, pi, methyl methacrylate or photoresistance.
4. contact panel as claimed in claim 1, it is characterized in that, the unit-area capacitance value being positioned at the described dielectric layer of described first area is greater than the unit-area capacitance value of the described dielectric layer being positioned at described second area.
5. contact panel as claimed in claim 1, it is characterized in that, the material of described sensing electrode comprises tin indium oxide or indium zinc oxide.
6. contact panel as claimed in claim 1, it is characterized in that, described first sensing electrode couples in a series arrangement.
7. contact panel as claimed in claim 6, it is characterized in that, described first sensing electrode couples in a series arrangement along a first direction.
8. contact panel as claimed in claim 7, it is characterized in that, described contact panel more comprises
Multiple second sensing electrode, is arranged on described substrate, and described first sensing electrode and described second sensing electrode are electrically insulated each other.
9. contact panel as claimed in claim 8, it is characterized in that, described second sensing electrode couples in a series arrangement along a second direction.
10. contact panel as claimed in claim 9, is characterized in that, described first direction and described second direction perpendicular to one another.
11. 1 kinds of electronic installations, is characterized in that, described electronic installation comprises:
One contact panel as claimed in claim 1;
One display panel, corresponding described contact panel configuration; And
One controller, controls described contact panel and described display panel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110239084.0A CN102955623B (en) | 2011-08-19 | 2011-08-19 | Contact panel and electronic installation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110239084.0A CN102955623B (en) | 2011-08-19 | 2011-08-19 | Contact panel and electronic installation |
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| CN102955623A CN102955623A (en) | 2013-03-06 |
| CN102955623B true CN102955623B (en) | 2015-12-02 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201741139U (en) * | 2010-06-12 | 2011-02-09 | 宸鸿科技(厦门)有限公司 | Touch circuit pattern structure, touch panel and touch display screen |
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| KR101577952B1 (en) * | 2009-03-10 | 2015-12-17 | 삼성디스플레이 주식회사 | Touch panel device |
| CN102231090B (en) * | 2009-10-22 | 2014-03-12 | 群康科技(深圳)有限公司 | Touch display panel and touch display device |
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| CN201741139U (en) * | 2010-06-12 | 2011-02-09 | 宸鸿科技(厦门)有限公司 | Touch circuit pattern structure, touch panel and touch display screen |
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Address after: Hsinchu Science Park, Taiwan, China Applicant after: Innolux Display Group Applicant after: Qunkang Technology (Shenzhen) Co., Ltd. Address before: Miaoli County, Taiwan, China Applicant before: Chimei Optoelectronics Co., Ltd. Applicant before: Qunkang Technology (Shenzhen) Co., Ltd. |
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