CN202854783U - Indium tin oxide (ITO) through hole capacitive touch screen - Google Patents

Indium tin oxide (ITO) through hole capacitive touch screen Download PDF

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Publication number
CN202854783U
CN202854783U CN 201220526383 CN201220526383U CN202854783U CN 202854783 U CN202854783 U CN 202854783U CN 201220526383 CN201220526383 CN 201220526383 CN 201220526383 U CN201220526383 U CN 201220526383U CN 202854783 U CN202854783 U CN 202854783U
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CN
China
Prior art keywords
ito
electrode
induction electrode
hole
touch
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 201220526383
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Chinese (zh)
Inventor
陈国狮
程强
张敏
谌晓望
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SHENZHEN DIJING INDUSTRY Co Ltd
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SHENZHEN DIJING INDUSTRY Co Ltd
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Priority to CN 201220526383 priority Critical patent/CN202854783U/en
Application granted granted Critical
Publication of CN202854783U publication Critical patent/CN202854783U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model discloses an indium tin oxide (ITO) through hole capacitive touch screen which comprises a capacitive substrate, ITO electrodes, a first insulating layer, ITO through hole electrodes, metal electrodes and a second insulating layer, wherein the ITO electrodes, the first insulating layer, the ITO through hole electrodes, the metal electrodes and the second insulating layer are sequentially stacked on the capacitive substrate in a laminating mode; the ITO electrodes comprise a positive induction electrode and a negative induction electrode which are located on the same layer, mutually independent, and mutually insulating; the positive induction electrode is provided with a base and an extending part; the negative induction electrode is provided with a base and an extending part; and the positive induction electrode and the negative induction electrode are correspondingly arranged. Through the reasonable design of a laminating structure and an ITO conducting method of the capacitive touch screen, and ITO signal electrodes are conducted and communicated by means of the adoption of an ITO through hole method in an up-down mode, light transmittance, working stability and touch sensitivity of the capacitive touch screen are effectively improved.

Description

ITO through hole capacitive touch screen
Technical field
The utility model relates to a kind of touch-screen, belongs to the display element technical field.
Background technology
Touch-screen mainly forms by touching detection part and touch screen controller, touch detection part and be installed in the indicator screen front, for detection of user touch location, send touch screen controller after the reception, the main work mouth of touch screen controller is to receive touch information from touch point detection device, and convert it to contact coordinate, and give again CPU, its can receive the order that CPU sends simultaneously and be carried out.
Medium according to principle of work and transmission information; touch-screen can be divided into four kinds: resistance-type; capacitor induction type; infrared-type and surface acoustic wave type; the ultimate principle of capacitive touch screen is to utilize the electric current induction of human body to carry out work; capacitive touch screen is two layers of compound glass screen; glass screen inside surface interlayer scribbles ITO (indium tin oxide conductive film; skin is the skim glassivation; the ITO coating is as workplace; draw four electrodes on four mouths; when very moment refers to touch on screen; by dried electric field; user and touch screen surface form a coupling capacitance, and mouth refers to from contact point suction inlet mouth electric current very mouthful, and this electric current flows out the electrode from four jiaos of touch-screen respectively; controller draws the position of touch point by the accurate Calculation to these four current ratios.
In capacitive touch screen, projection-type capacitive touch screen is that current application is a kind of comparatively widely, this screen touch inductive means is generally a plurality of column electrodes and the row electrode is staggered to form the induction matrix, common design comprises the two sides that column electrode and row electrode is separately positioned on same transparency carrier, prevents from short circuit occurring at intervening portion; Perhaps column electrode and row electrode are arranged on the homonymy of same transparency carrier, be formed on the same conducting film (being generally the ITO conducting film), separate by the mode that insulation course and frame conducting bridge are set at column electrode and the staggered position of row electrode, column electrode and row electrode separated and guarantee conducting on direction separately can effectively prevent its short circuit.
Adopt the capacitive touch screen of traditional design proposal can have the defective of the not high and poor work stability of transmittance, traditional capacitive touch screen transmittance is difficult to break through 80%, and during whole stressed flexural deformation, occur at the interface easily separating, cause electrode to open circuit and touch inefficacy, touch sensible parts damages.
The utility model content
Defective for prior art, the utility model provides ITO through hole capacitive touch screen, reasonably design by stepped construction and ITO conduction mode to capacitance touch screen, conducting ITO signal electrode, effectively improve transmittance, job stability and the touch sensitivity of capacitive touch screen.
For achieving the above object, the utility model adopts following technical scheme:
ITO through hole capacitive touch screen, comprise capacity substrate, stack gradually on capacity substrate ITO electrode, the first insulation course, ITO through hole electrode, metal electrode and the second insulation course, wherein said ITO electrode comprises positive induction electrode and negative induction electrode, be positioned at same aspect, separate, mutually insulated; Described positive induction electrode has base portion and extension; Described negative induction electrode has base portion and extension; Described positive induction electrode and negative induction electrode are corresponding to be arranged.
Wherein, described capacity substrate is the tempering pyrex glass substrate, and thickness is 0.5-1mm.
Wherein, the first insulation course and the second insulation course are that acrylic resin or epoxide resin material are made, and thickness is 1-2um.
Wherein, described metal electrode is that silver alloy or aldary are made, and thickness is 50-200nm.
Wherein, the number of through-holes on the described ITO through hole electrode is a plurality of, is circle or ellipse hole.
By said structure design, the through hole on the described ITO through hole electrode makes ITO through hole electrode and ITO electrode contact more stable, more reliable.Described through hole is opened the position that needs the ITO through hole at the first insulation course.
Wherein, because the ITO electrode has the induction area larger than the strip electrode of routine, therefore induction is more accurate.
The ITO electrode, the touch-control IC that is wired to the touch-screen back carries out the analyzing and processing of signal data, and this is apparent, does not describe especially herein.
The first insulation course makes the dried insulation status of ITO electrode and ITO through hole electrode place, mutually not conducting.The ITO through hole electrode plays ITO conducting effect, the circuit on the conducting ITO electrode, and the second dielectric protection layer metal electrode and ITO wire make it and air insulation.
In the utility model, the through hole electrode that the conduction mode of ITO through hole electrode is the ITO electrode by the first insulation course conducting that makes progress, the through hole electrode by the first insulation course is conducting to the ITO electrode downwards again, makes the ITO electrode form the capacitance plate induction and drives path.
Further, for the transmission area that improves the ITO electrode and the precision of multi-touch function, have a plurality of base portions and extension on the described positive induction electrode, the direct-connected connection of described base portion is arranged, described extension from the base portion end to downward-extension; Described negative induction electrode has a plurality of base portions and extension, and the direct-connected connection of described base portion is arranged, and described extension extends upward from the base portion end.
Disturb in order to prevent short circuit and signal, a plurality of extensions of described positive induction electrode and a plurality of extensions of negative induction electrode are staggered non-overlapping copies.
Description of drawings
Fig. 1 is the structural representation of the utility model touch-screen;
Fig. 2 is the structural representation of the used ITO electrode of the utility model touch-screen.
Embodiment
With reference to figure 1, touch-screen of the present utility model, comprise capacity substrate 10, stack gradually on capacity substrate ITO electrode 11, the first insulation course 12, ITO through hole electrode 13, metal electrode 14 and the second insulation course 15, each layer links together by glue transparent on the optics.
Wherein, thus the lead to the hole site on the induction electrode position distribution on the ITO electrode and the ITO through hole electrode is complementary and plays ITO conducting effect.
With reference to figure 2, shown the distribution of electrodes mode on the ITO electrode, three groups of corresponding positive induction electrodes 110 and negative induction electrode 111, positive induction electrode and negative induction electrode are strip shaped electric poles, wherein, positive induction electrode has a plurality of base portions and extension, these base portions connect in line and extension respectively from the end of base portion to downward-extension; Negative induction electrode has a plurality of base portions and extension, and these base portions connect in line and extension extends upward from the end of base portion respectively; Positive induction electrode and negative induction electrode are relative in twos, and extension separately is staggered and does not overlap mutually.
Wherein, positive induction electrode, negative induction electrode all are connected to touching signals processor 16 by wire.

Claims (7)

1.ITO through hole capacitive touch screen, comprise capacity substrate, stack gradually on capacity substrate ITO electrode, the first insulation course, ITO through hole electrode, metal electrode and the second insulation course, it is characterized in that described ITO electrode comprises positive induction electrode and negative induction electrode, be positioned at same aspect, separate, mutually insulated; Described positive induction electrode has base portion and extension; Described negative induction electrode has base portion and extension; Described positive induction electrode and negative induction electrode are corresponding to be arranged.
2. touch-screen according to claim 1 is characterized in that described capacity substrate is the tempering pyrex glass substrate, and thickness is 0.5-1mm.
3. touch-screen according to claim 1 is characterized in that the first insulation course and the second insulation course are that acrylic resin or epoxide resin material are made, and thickness is 1-2um.
4. touch-screen according to claim 1 is characterized in that described metal electrode is that silver alloy or aldary are made, and thickness is 50-200nm.
5. touch-screen according to claim 1 is characterized in that the number of through-holes on the described ITO through hole electrode is a plurality of, is circle or ellipse hole.
6. touch-screen according to claim 1 is characterized in that having a plurality of base portions and extension on the described positive induction electrode, and the direct-connected connection of described base portion is arranged, described extension from the base portion end to downward-extension; Described negative induction electrode has a plurality of base portions and extension, and the direct-connected connection of described base portion is arranged, and described extension extends upward from the base portion end.
7. touch-screen according to claim 6 is characterized in that a plurality of extensions of described positive induction electrode and a plurality of extensions of negative induction electrode are staggered non-overlapping copies.
CN 201220526383 2012-10-15 2012-10-15 Indium tin oxide (ITO) through hole capacitive touch screen Expired - Fee Related CN202854783U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220526383 CN202854783U (en) 2012-10-15 2012-10-15 Indium tin oxide (ITO) through hole capacitive touch screen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220526383 CN202854783U (en) 2012-10-15 2012-10-15 Indium tin oxide (ITO) through hole capacitive touch screen

Publications (1)

Publication Number Publication Date
CN202854783U true CN202854783U (en) 2013-04-03

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103034387A (en) * 2013-01-12 2013-04-10 深圳市中显微电子有限公司 Single substrate type capacitive touch screen and manufacture method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103034387A (en) * 2013-01-12 2013-04-10 深圳市中显微电子有限公司 Single substrate type capacitive touch screen and manufacture method thereof

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130403

Termination date: 20131015