CN105138201A - Capacitive touch display panel - Google Patents
Capacitive touch display panel Download PDFInfo
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- CN105138201A CN105138201A CN201510563820.6A CN201510563820A CN105138201A CN 105138201 A CN105138201 A CN 105138201A CN 201510563820 A CN201510563820 A CN 201510563820A CN 105138201 A CN105138201 A CN 105138201A
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- display panel
- touch control
- control display
- capacitance type
- type touch
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Abstract
The invention provides a capacitive touch display panel. The capacitive touch display panel comprises a thin film transistor substrate, and a liquid crystal layer, a color filter substrate, a sensing electrode layer and a polarizer which are sequentially formed on the thin film transistor substrate. The sensing electrode layer comprises transparent electrodes close to the polarizer, metal electrodes close to the color filter substrate, and an insulating layer arranged between the transparent electrodes and the metal electrodes in a clamped mode. The capacitive touch display panel comprises the sensing electrode layer, the structure that the transparent electrodes and the metal electrodes are combined is adopted for the sensing electrode layer, and therefore compared with existing double layers of metal electrodes, light reflection of the capacitive touch display panel can be effectively reduced, and the visual perception is more comfortable. In addition, the sensing electrode layer does not need to be provided with a protection layer or be darkened, and therefore procedures are saved, the production cost is reduced, and the production efficiency is improved.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly relate to a kind of capacitance type touch control display panel.
Background technology
At present, touch technology has been applied to various with in the electronic product of display panel widely, as mobile phone, computer, personal digital assistant (PDA) and flat-surface television etc.
Touch control display panel (abbreviation touch-control display panel) can be divided into resistance-type, condenser type, optical profile type, sound wave type and electromagnetic type etc. according to the difference according to principle of induction, due to capacitance type touch control display panel, to have reaction velocity fast, highly sensitive, fiduciary level is good, and durability advantages of higher, and approved in the industry, and use more widely.
The sensing electrode of capacitance type touch control display panel adopts transparent electrode material as tin indium oxide (ITO), indium zinc oxide (IZO) etc. usually, along with the size of capacitance type touch-control panel touch-control display panel is increasing, the size of sensing electrode is also thereupon increasing, and the self-resistance rate of ITO or IZO is larger, the resistance of touch control line is increased, affects touching signals transmission speed, cause touch-control deterioration of sensitivity, affect Consumer's Experience sense, notably malfunctioning to touch-control.The method of current this problem of solution arranges to adopt the electrode material of metallic netted structural (Metalmesh) to carry out alternative original transparent electrode material in capacitance type touch-control panel, to reduce the resistance of touch control line, promotes touching signals transmission speed.
But existing method exists following not enough: because the reflectivity of metal material is higher, during viewing panel, there is reflective problem, and visual visible by user, and be difficult to allow user accept; Moreover the easy oxidation corrosion of metallic netted structural, need to arrange protective seam (Protectionlayer) or Darkening process, it must increase production cost, reduces production efficiency simultaneously.
Summary of the invention
In view of above-mentioned condition, be necessary that providing a kind of reduces reflective, that visual effect is more comfortable capacitance type touch control display panel, to solve problems of the prior art.
The invention provides a kind of capacitance type touch control display panel, comprise thin film transistor base plate and be formed at liquid crystal layer, colored optical filtering substrates, sensing electrode layer, the polaroid on described thin film transistor base plate successively, the insulation course that described sensing electrode layer comprises the transparency electrode being close to described polaroid, the metal electrode being close to described colored optical filtering substrates and is located between described transparency electrode and described metal electrode.
Further, described transparency electrode is many and has one fixed width, and many described transparency electrode horizontal intervals are arranged.
Further, many described transparency electrode compartment of terrains are established in described insulation course upper surface.
Further, the material of described transparency electrode is tin indium oxide, aluminum zinc oxide or indium zinc oxide.
Further, described metal electrode is metallic netted structural.
Further, the material of described metal electrode is metal material or alloy material.
Further, described capacitance type touch control display panel also comprises sensing electrode flexible PCB, described sensing electrode flexible PCB is fixed on the top surface edge of described colored optical filtering substrates in the outside and overlap joint of described sensing electrode layer, and described sensing electrode flexible PCB is electrically connected with described transparency electrode and described metal electrode respectively.
Further, described insulation course offers through hole, described through hole is multiple and is arranged on the described insulation course below the same end of described transparency electrode respectively, one end of first wire is electrically connected with described transparency electrode through described through hole, and the other end of described first wire is drawn and is electrically connected with described sensing electrode flexible PCB below described insulation course.
Further, the both sides of described metal electrode are electrically connected by the second wire and described sensing electrode flexible PCB.
Further, described capacitance type touch control display panel also comprises screen protection layer, and described screen protection layer is arranged at above described polaroid, and described screen protection layer adopts glassivation or blow-out disc.
The beneficial effect that the technical scheme of the embodiment of the present invention is brought is: above-mentioned capacitance type touch control display panel, comprise sensing electrode layer, and the structure that sensing electrode layer adopts transparency electrode and metal electrode to combine, it is compared with existing double-level-metal electrode, the density of its metal can reduce half, can effectively reduce the reflective of capacitance type touch control display panel, visual experience is more comfortable; Moreover sensing electrode layer does not need to arrange protective seam or Darkening process, save operation, reduce production cost, enhance productivity.
Accompanying drawing explanation
Fig. 1 is the structural representation of the capacitance type touch control display panel of the embodiment of the present invention; And
Fig. 2 is the front view of the sensing electrode layer in Fig. 1.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the embodiment of the present invention is described in further detail.
Alleged in the description of the present invention orientation " on " and D score only in order to represent relative position relation; For the accompanying drawing of this instructions, the top of capacitance type touch-control panel 10 is comparatively close to beholder, and below is then comparatively away from beholder.
Fig. 1 is the structural representation of the capacitance type touch control display panel of the embodiment of the present invention, Fig. 2 is the front view of the sensing electrode layer in Fig. 1, concrete, refer to Fig. 1 and Fig. 2, capacitance type touch control display panel 10 of the present invention from bottom to top comprises thin film transistor (TFT) (TFT) substrate 11, liquid crystal (LC) layer 12, colorized optical filtering (Colorfilter successively, CF) substrate 14, sensing electrode (Sensingelectrode) layer 16, polaroid (Polarize, POL) 18.Other extra layers can be inserted according to various application or functional requirement between above-mentioned each layer.Embodiments of the invention are for On-cell capacitance type touch control display panel.
Particularly, thin film transistor base plate 11 is provided with electrode pair (Electrodepair), electrode pair comprises pixel electrode (Pixelelectrode) and counter electrode (Commonelectrode), produces side between the two to horizontal component of electric field to control the rotation of the liquid crystal of liquid crystal layer 12.Colored optical filtering substrates 14 is transparency carrier, it can be glass, polymer plastic glue material (such as polycarbonate (Polycarbonate, PC), Polyvinylchloride (Polyvinylchloride, PVC)) or other transparent materials.Polaroid 18 can adopt polyvinyl alcohol (PVA) (Polyvinylalcohol, PVA) or other materials.
Sensing electrode layer 16 comprises transparency electrode 162, metal electrode 164 and insulation course 166.In the present embodiment, sensing electrode layer 16 is from bottom to top followed successively by metal electrode 164, insulation course 166 and transparency electrode 162.
Metal electrode 164 is in metallic netted structural, and the material of metal electrode 164 is the good metal material of electric conductivity, as gold, silver, copper, aluminium, zinc, or at least the two alloy, above-mentioned material cost is lower, conducts electricity very well.The resistance of metal material is far smaller than the resistance of the transparent electrode materials such as ITO.The both sides of metal electrode 164 are drawn by the second wire 165.
Insulation course 166 is located between transparency electrode 162 and metal electrode 164, to avoid the electrically conducting of transparency electrode 162 and metal electrode 164.Insulation course 166 can adopt glass or have transparent high molecular polymer or the organic material of insulativity, but is not limited thereto.
Transparency electrode 162 is many and has the electrode of one fixed width and horizontal interval is arranged at described insulation course 166 upper surface.There is gap between transparency electrode 162, be spaced from each other.Transparency electrode 162 adopts transparent conductive material, as tin indium oxide (IndiumTinOxide, ITO), aluminum zinc oxide (AluminumZincOxide, AZO) or indium zinc oxide (IndiumZincOxide, but be not limited thereto IZO).Due to transparent conductive materials such as ITO, itself have anti-oxidant, resistance to corrosion, therefore can not need between transparency electrode 162 and colored optical filtering substrates 14 to establish protective seam.
Capacitance type touch control display panel 10 also comprises sensing electrode flexible PCB 17, and sensing electrode flexible PCB 17 is fixed on the top surface edge of colored optical filtering substrates 14 in the outside and overlap joint of sensing electrode layer 16.For ease of the connection of transparency electrode 162 with sensing electrode flexible PCB 17, insulation course 166 offers through hole 1662, through hole 1662 is multiple and is arranged on the insulation course 166 of below, the same end of transparency electrode 162 (in Fig. 2 bottom) respectively, the quantity of through hole 1662 is corresponding with the quantity of transparency electrode 162, one end of first wire 163 is electrically connected with transparency electrode 162 through through hole 1662, and the other end of the first wire 163 is drawn and is electrically connected with sensing electrode flexible PCB 17 below insulation course 166.Second wire 165 is electrically connected with sensing electrode flexible PCB 17.First wire 163 and the second wire 165 do not contact, and the material of the first wire 163, second wire 165 is with the material of metal electrode 164.
The structure that sensing electrode layer 16 adopts transparency electrode 162 and metal electrode 164 to combine, it is compared with existing double-level-metal electrode, it can effectively reduce the reflective of capacitance type touch control display panel 10, visual experience is more comfortable, simultaneously, do not need to need very bright backlight reflective to overcome again, and reduce the quantity of backlight, reduce costs; Moreover sensing electrode layer 16 does not need to arrange protective seam or Darkening process, save operation, reduce production cost, enhance productivity.
Transparency electrode 162 and metal electrode 164 detect processing module (not shown) with the sensing of capacitance type touch control display panel 10 peripheral hardware respectively and pumping signal module (not shown) is electrically connected, and forms mutual capacitance between transparency electrode 162 and metal electrode 164.When there is touch-control action in capacitance type touch control display panel 10 surface, the mutual capacitance value of touch-control action center position can change, described touch-control action is converted to electric signal, through just can obtain the coordinate data of touch-control action center position to the process of capacitance domain transformation data, the electronic installation that can process related data just can judge the corresponding accurate location on capacitance type touch control display panel 10 of touch-control action according to the coordinate data of touch-control action center position, thus completes corresponding corresponding function or input operation.
Capacitance type touch control display panel 10 also comprises screen protection layer 19; screen protection layer 19 is arranged at the top (outermost layer of capacitance type touch control display panel 10) of polaroid 18, and screen protection layer 19 pairs of capacitance type touch control display panel 10 play certain protective effect but it too increases integral thickness and the weight of capacitance type touch control display panel 10 simultaneously.Screen protection layer 19 both can adopt glassivation, and also can adopt blow-out disc (such as PC material), the cost of blow-out disc is low compared with the cost of glassivation.
The beneficial effect that the technical scheme of the embodiment of the present invention is brought is: above-mentioned capacitance type touch control display panel 10, comprise sensing electrode layer 16, and the structure that sensing electrode layer 16 adopts transparency electrode 162 and metal electrode 164 to combine, it is compared with existing double-level-metal electrode, the density of its metal can reduce half, can effectively reduce the reflective of capacitance type touch control display panel 10, visual experience is more comfortable; Moreover sensing electrode layer 16 does not need to arrange protective seam or Darkening process, save operation, reduce production cost, enhance productivity.
In this article, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, except comprising those listed key elements, but also can comprise other key elements clearly do not listed.
In this article, the involved noun of locality such as forward and backward, upper and lower is arranged in figure with parts in accompanying drawing and parts position each other defines, clear and convenient just in order to expression technology scheme.Should be appreciated that the use of the described noun of locality should not limit the scope of the application's request protection.
When not conflicting, the feature in embodiment herein-above set forth and embodiment can be combined with each other.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a capacitance type touch control display panel (10), comprise thin film transistor base plate (11) and be formed at the liquid crystal layer (12) on described thin film transistor base plate (11) successively, colored optical filtering substrates (14), sensing electrode layer (16), polaroid (18), it is characterized in that: described sensing electrode layer (16) comprises the transparency electrode (162) being close to described polaroid (18), be close to the metal electrode (164) of described colored optical filtering substrates (14), and the insulation course (166) be located between described transparency electrode (162) and described metal electrode (164).
2. capacitance type touch control display panel (10) as claimed in claim 1, is characterized in that: described transparency electrode (162) is for many and have one fixed width, and many described transparency electrode (162) horizontal intervals are arranged.
3. capacitance type touch control display panel (10) as claimed in claim 2, is characterized in that: many described transparency electrode (162) compartment of terrains are established in described insulation course (166) upper surface.
4. capacitance type touch control display panel (10) as claimed in claim 1, is characterized in that: the material of described transparency electrode (162) is tin indium oxide, aluminum zinc oxide or indium zinc oxide.
5. capacitance type touch control display panel (10) as claimed in claim 1, is characterized in that: described metal electrode (164) is in metallic netted structural.
6. capacitance type touch control display panel (10) as claimed in claim 1, is characterized in that: the material of described metal electrode (164) is metal material or alloy material.
7. capacitance type touch control display panel (10) as claimed in claim 2, it is characterized in that: described capacitance type touch control display panel (10) also comprises sensing electrode flexible PCB (17), described sensing electrode flexible PCB (17) is fixed on the top surface edge of described colored optical filtering substrates (14) in the outside and overlap joint of described sensing electrode layer (16), and described sensing electrode flexible PCB (17) is electrically connected with described transparency electrode (162) and described metal electrode (164) respectively.
8. capacitance type touch control display panel (10) as claimed in claim 7, it is characterized in that: described insulation course (166) offers through hole (1662), described through hole (1662) is for multiple and be arranged on the described insulation course (166) below described transparency electrode (162) same end respectively, one end of first wire (163) is electrically connected with described transparency electrode (162) through described through hole (1662), the other end of described first wire (163) is drawn in described insulation course (166) below and is electrically connected with described sensing electrode flexible PCB (17).
9. capacitance type touch control display panel (10) as claimed in claim 7, is characterized in that: the both sides of described metal electrode (164) are electrically connected by the second wire (165) and described sensing electrode flexible PCB (17).
10. capacitance type touch control display panel (10) as claimed in claim 1; it is characterized in that: described capacitance type touch control display panel (10) also comprises screen protection layer (19); described screen protection layer (19) is arranged at described polaroid (18) top, and described screen protection layer (19) adopts glassivation or blow-out disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510563820.6A CN105138201A (en) | 2015-09-08 | 2015-09-08 | Capacitive touch display panel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510563820.6A CN105138201A (en) | 2015-09-08 | 2015-09-08 | Capacitive touch display panel |
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| CN105138201A true CN105138201A (en) | 2015-12-09 |
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| CN201510563820.6A Pending CN105138201A (en) | 2015-09-08 | 2015-09-08 | Capacitive touch display panel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107966863A (en) * | 2016-10-19 | 2018-04-27 | 京东方科技集团股份有限公司 | A kind of display base plate and preparation method thereof, display panel, display device |
| CN109448551A (en) * | 2018-11-16 | 2019-03-08 | 维沃移动通信有限公司 | Terminal device |
| TWI691873B (en) * | 2016-05-27 | 2020-04-21 | 鴻海精密工業股份有限公司 | Touch display panel and touch display device |
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Patent Citations (7)
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| US20130168138A1 (en) * | 2010-07-05 | 2013-07-04 | Dic Corporation | Substrate having transparent conductive layer, method for producing same, transparent conductive film laminate for touch panel, and touch panel |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI691873B (en) * | 2016-05-27 | 2020-04-21 | 鴻海精密工業股份有限公司 | Touch display panel and touch display device |
| CN107966863A (en) * | 2016-10-19 | 2018-04-27 | 京东方科技集团股份有限公司 | A kind of display base plate and preparation method thereof, display panel, display device |
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| CN109448551A (en) * | 2018-11-16 | 2019-03-08 | 维沃移动通信有限公司 | Terminal device |
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Application publication date: 20151209 |