CN109426384A - Touch panel and touch panel detection method - Google Patents
Touch panel and touch panel detection method Download PDFInfo
- Publication number
- CN109426384A CN109426384A CN201710771011.3A CN201710771011A CN109426384A CN 109426384 A CN109426384 A CN 109426384A CN 201710771011 A CN201710771011 A CN 201710771011A CN 109426384 A CN109426384 A CN 109426384A
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- mentioned
- circuit
- touch panel
- touch control
- control sensing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
Abstract
A kind of touch panel, including a touch control sensing circuit, an ESD protection circuit and a processor.Touch control sensing circuit is made of multiple sensor pads, to sense a touch action of at least one touching object to export a sensing signal.ESD protection circuit is connect with touch control sensing circuit, and around around touch control sensing circuit, and generates a circuit load.Processor and touch control sensing circuit and ESD protection circuit couple, and to receive sensing signal and circuit load, and execute a corresponding movement according to sensing signal and are decided whether to generate an alarm signal according to the variation of circuit load.
Description
Technical field
It is the present invention relates to a kind of touch panel and touch panel detection method, in particular to a kind of anti-according to static discharge
The load variation of protection circuit judges the touch panel and touch panel detection method of the health status of touch panel.
Background technique
Touch-control product flourishes in recent years, and the electronic device with touch function is to be commonly used for daily life
In.However although arranging different check problems according to different assembling sequences in the processing procedure of touch panel, having can
It can make not to be tested out the case where failure for some reason, and then generate the case where defective products flows into market.Therefore, such as
What judges whether touch panel leads to the problem of abnormal conditions and solve to be required at present after touch panel factory.
Summary of the invention
To solve the above problems, one embodiment of the invention provides a kind of touch panel, including it is a touch control sensing circuit, one quiet
Discharge of electricity protection circuit and a processor.Touch control sensing circuit is made of multiple sensor pads, to sense at least one touching
One touch action of object is to export a sensing signal.ESD protection circuit is connect with touch control sensing circuit, and around
Around touch control sensing circuit, and generate a circuit load.Processor and touch control sensing circuit and ESD protection circuit
Coupling to receive sensing signal and circuit load, and executes corresponding one according to sensing signal and acts and according to circuit
The variation of load decides whether to generate an alarm signal.
Another embodiment of the present invention provides a kind of touch panel detection method, step includes: by a touch control sensing circuit
One touch action of at least one touching object of sensing is to export a sensing signal, and wherein touch control sensing circuit is by multiple sensor pad institutes
It constitutes；A corresponding movement is executed according to sensing signal by a processor；It is received by processor and corresponds to a static discharge
One circuit load of protection circuit, wherein ESD protection circuit is connect with touch control sensing circuit, and around touch-control sensing
Around circuit；And decided whether to generate an alarm signal according to the variation of circuit load by processor.
Detailed description of the invention
Fig. 1 is the block diagram for showing touch panel described in an embodiment according to the present invention.
Fig. 2 is the schematic diagram for showing the variation of circuit load described in an embodiment according to the present invention.
Fig. 3 is the schematic diagram for showing touch panel described in an embodiment according to the present invention.
Fig. 4 is the schematic diagram for showing touch panel described in another embodiment according to the present invention.
Fig. 5 is the flow chart for showing the touch panel detection method described according to some embodiments of the invention.
Description of symbols:
100~touch panel；
110~touch control sensing circuit；
120,450~ESD protection circuit；
130~processor；
310~the first sensing serials；
311~the first sensor pads；
320~the second sensing serials；
321~the second sensor pads；
350~electrostatic discharge protective ring；
451~dummy pattern；
D1~first direction；
D2~second direction；
I1~interior loop current；
I2~outer loop current；
S501~S508~steps flow chart.
Specific embodiment
Next other applicable ranges of touch panel and touch panel detection method for the present invention will be in being mentioned
It is obvious in the detailed description of confession.It must be appreciated that following detailed description and specific embodiment, when the related touch panel of proposition
And touch panel detection method example embodiment when, the only purpose as description and the model that is not intended to limit the invention
It encloses.
Fig. 1 is the block diagram for showing touch panel 100 described in an embodiment according to the present invention.Touch panel 100 can wrap
Include a touch control sensing circuit 110, an ESD protection circuit 120 and a processor 130.Touch control sensing circuit 110 includes
Multiple first sensing serials and multiple second sensing serials.First sensing serials are made of multiple first sensor pads, are edges
A first direction extend, and each of the first sensing serials is to be electrically insulated from.Second sensing string is felt by multiple second
It surveys pad to be constituted, is to extend along a second direction, and each of the second sensing serials is to be electrically insulated from.Wherein,
One direction is vertical with second direction.When touch control sensing circuit 110 senses a touch action of at least one touching object, touching
Control sensing circuit 110 generates a corresponding sensing signal.ESD protection circuit 120 is connect with touch control sensing circuit 110,
And around around touch control sensing circuit 110, to provide the current path of a static discharge, touch-control is flowed into avoid electric current
In sensing circuit 110.In addition, ESD protection circuit 120 is more to generate a circuit load.Wherein, circuit load can be
RC load or an only resistance value.ESD protection circuit 120 is after generation circuit load, the analog signal of circuit load
An Analog-digital Converter can be first passed through to be converted to a digital signal, device 130 for processing carries out interpretation.In progress digital simulation
When conversion, also optionally amplify some special parameters, to strengthen the feature of the parameter.Processor 130 can be microprocessor
Or control circuit comprising microprocessor etc., to receive sensing signal from touch control sensing circuit 110, and according to sensing signal
Definition corresponds to the position of touch action, to execute corresponding movement.In addition, processor 130 is more from ESD protection circuit
Whether 120 receive the digital signal for corresponding to circuit load, be more than permissible range with the change that decision circuitry loads.Its
In, when processor 130 judges the circuit load of ESD protection circuit 120 more than permissible range, then it is alert to export one
Show message to inform that user send and repair detection.
In general, at nominal conditions, touch panel is after the completion of production, if without by External force interference, circuit is negative
Load can level off to stabilization within certain section, only can generate a little disturbance because of the variation of environment, but can't be because of the time
And has and significantly change.Fig. 2 is to show circuit load variation normal and abnormal described in an embodiment according to the present invention
Schematic diagram.In this embodiment, the normal range (NR) of the value of RC load should between 1000~1100, and 1200 and 900
It is then a buffer value.For example, as shown in the figure, under normal conditions, the RC load variation of good touch panel is bent
Line should as shown by curve 1, i.e. the variation of its value is between 1000~1100.However, the RC when touch panel loads variation
When curve was occurred such as the case where curve 2, i.e. the value of RC load rises upwards more than 1200 or its slope variation is more than one set
When value, then representing this touch panel for defective products or abnormal conditions may occurs.And in order to avoid above-mentioned situation generates,
When processor 130 judges the value for the circuit load that ESD protection circuit 120 is exported and is not located between 1000~1100,
But when still less than 1200 or 900, then one first warning message is exported, to remind user's touch panel to be likely to occur abnormal feelings
Condition.And when processor 130 judge circuit load value more than 1200 or be lower than 900 when, indicate touch panel may be
Defective products breaks down, then exports one second alarm signal, repaired with reminding user to send touch panel.Wherein, circuit
The value when normal range (NR) of the value of load can dispatch from the factory according to touch panel determines.Alternatively, environment and use in order to avoid factory
The case where environment of person is different, in turn results in erroneous judgement, therefore the normal range (NR) of the value of circuit load also can be according to user for the first time
Generated initial value determines when booting.
Fig. 3 is the schematic diagram for showing touch panel described in an embodiment according to the present invention.As shown, touch-control sensing is electric
It routes multiple first sensing serials 310 and multiple second sensing serials 320 is constituted.First sensing serials 310 are along
One direction D1 setting, and be made of multiple first sensor pads 311.Second sensing serials 320 are arranged along second direction D2,
And it is made of multiple second sensing electricity 321.Wherein, the first all sensing serials and the second sensing serials all with processor
130 connections.In this embodiment, ESD protection circuit is 350 structures of an electrostatic discharge protective ring by a uniline
At.As shown, electrostatic discharge protective ring 350 is first enclosed along touch control sensing circuit 110 around one, further along same path negative side
To wraparound.In this way, the inner ring current in wire I of electrostatic discharge protective ring1Direction and outer ring current in wire I2It is contrary, make
Magnetic field can not be generated by obtaining electrostatic discharge protective ring, i.e., will not interfere the running of touch control sensing circuit 110.
Fig. 4 is the schematic diagram for showing touch panel described in another embodiment according to the present invention.Wherein, the touch-control in Fig. 4
Sensing circuit is identical as the structure of the touch control sensing circuit in Fig. 3, is not described to simplify explanation herein.Static discharge is anti-
Protection circuit 450 is by multiple dummy pattern (dummy identical as the material of sensor pad 311,322 but without touch function
Pattern) 451 constituted, and driven by identical condition so that the aging condition of ESD protection circuit 450 with.
Fig. 5 is the flow chart for showing the touch panel detection method described according to some embodiments of the invention.Touch panel
Detection method originates in step S501, and user begins to use touch panel 100 for the first time.In step S502,130 basis of processor
Factory-said value or user a normal range (NR) of the generated initial value decision corresponding to circuit load when first powering on.In step
S503, touch control sensing circuit 110 start sensing and correspond to the touch action of at least one touching object to export sensing signal.Yu Bu
Rapid S504, processor 130 execute corresponding movement according to sensing signal.In step S505, ESD protection circuit 120 is exported
Circuit load.In step S506, circuit load is converted to by digital signal by analog-digital converter.In step S507, place
It manages device 130 and receives the digital signal for corresponding to circuit load, and whether the value of decision circuitry load or variation are located at normal model
In enclosing.When the value of 130 decision circuitry of processor load or variation are located in normal range (NR), step S503, touch-control sense are returned to
Slowdown monitoring circuit 110 continues to execute the operation of sensing touch action.Conversely, when the value or variation of the load of 130 decision circuitry of processor
When beyond normal range (NR), S508 is entered step, processor 130 generates an alarm signal.
In conclusion an embodiment is proposed according to the present invention touch panel and touch panel detection method, touch-control
The processor of panel can have identical material and the electrostatic discharge protective electricity without touch function by interpretation and touch control sensing circuit
The variation of the circuit load on road, to judge whether the function of touch panel is abnormal.In addition, in order to avoid electrostatic discharge protective
The disconnection design of circuit causes charge to pass through from gap and then destroys touch control sensing circuit, and one embodiment of the invention, which more passes through, matches
An electrostatic discharge protective ring with inner ring and outer ring is set to prevent above-mentioned generate.And in order to closer
The aging performance of analog sensing pad, the ESD protection circuit of another embodiment of the present invention is more by multiple dummy pattern institutes structure
At wherein the material of dummy pattern is identical as the material of the sensor pad in touch control sensing circuit, to improve the accuracy rate of judgement.
The feature of many embodiments described above, makes skilled artisan clearly understood that this specification
Form.Skilled artisan it will be appreciated that its using based on the disclosure of invention to design or change other
Processing procedure and structure and complete the purpose for being identical to above-described embodiment and/or reach the advantages of being identical to above-described embodiment.Affiliated skill
Art field technical staff also it will be appreciated that do not depart from the spirit and scope of the present invention equivalent constructions can not depart from it is of the invention
Make arbitrary variation, substitution and retouching in spirit and scope.
Claims (10)
1. a kind of touch panel, comprising:
One touch control sensing circuit is made of multiple sensor pads, to sense a touch action of at least one touching object with defeated
A sensing signal out；
One ESD protection circuit is connect with above-mentioned touch control sensing circuit, and around around above-mentioned touch control sensing circuit,
And generate a circuit load；And
One processor is coupled with above-mentioned touch control sensing circuit and above-mentioned ESD protection circuit, to receive above-mentioned sensing
Signal and foregoing circuit load, and execute corresponding one according to above-mentioned sensing signal and act and according to foregoing circuit load
Variation decides whether to generate an alarm signal.
2. touch panel as described in claim 1, wherein foregoing circuit load is RC load or a resistance value, when above-mentioned place
When reason device judges that the variation of foregoing circuit load is more than a given area, above-mentioned alarm signal is generated.
3. touch panel as described in claim 1, wherein above-mentioned ESD protection circuit is made of a route, it is above-mentioned
Route has one first line segment and a second line segment, and above-mentioned first line segment and above-mentioned second line segment are all around above-mentioned touch-control
Around sensing circuit, but corresponds to a current direction of above-mentioned first line segment and correspond to an electric current side of above-mentioned second line segment
To on the contrary, the material for constituting above-mentioned touch control sensing circuit is identical as the material for constituting above-mentioned ESD protection circuit.
4. touch panel as described in claim 1, wherein above-mentioned ESD protection circuit is made of above-mentioned sensor pad, with
And the material of the above-mentioned touch control sensing circuit of composition is identical as the material for constituting above-mentioned ESD protection circuit.
5. touch panel as claimed in claim 2, wherein above-mentioned given area is first according to the one of above-mentioned touch panel factory
Initial value or a booting Initial Value definition.
6. a kind of touch panel detection method, comprising:
By a touch action of at least one touching object of touch control sensing circuit sensing to export a sensing signal, wherein above-mentioned
Touch control sensing circuit is made of multiple sensor pads；
A corresponding movement is executed according to above-mentioned sensing signal by a processor；
The circuit load for corresponding to an ESD protection circuit is received by above-mentioned processor, wherein above-mentioned static discharge is anti-
Protection circuit is connect with above-mentioned touch control sensing circuit, and around around above-mentioned touch control sensing circuit；And
Decided whether to generate an alarm signal according to the variation that foregoing circuit loads by above-mentioned processor.
7. touch panel detection method as claimed in claim 6, the variation loaded by above-mentioned processor according to foregoing circuit
Decide whether the step of generating above-mentioned alarm signal further include:
Judge the variation of foregoing circuit load whether more than a given area by above-mentioned processor；
Wherein, when above-mentioned processor judges the variation of foregoing circuit load more than above-mentioned given area, above-mentioned warning letter is generated
Number；And
Wherein, foregoing circuit load is RC load or a resistance value.
8. touch panel detection method as claimed in claim 6, wherein above-mentioned ESD protection circuit is by a route institute
It constitutes, above-mentioned route has one first line segment and a second line segment, and above-mentioned first line segment and above-mentioned second line segment all surround
Around above-mentioned touch control sensing circuit, but corresponds to a current direction of above-mentioned first line segment and correspond to above-mentioned second line segment
A current direction on the contrary, constituting the material of above-mentioned touch control sensing circuit and constituting the material phase of above-mentioned ESD protection circuit
Together.
9. touch panel detection method as claimed in claim 6, wherein above-mentioned ESD protection circuit is by above-mentioned sensor pad
It is constituted, and the material of the above-mentioned touch control sensing circuit of composition is identical as the material for constituting above-mentioned ESD protection circuit.
10. touch panel detection method as claimed in claim 6, wherein above-mentioned given area is according to above-mentioned touch panel
One factory initial value or a booting Initial Value definition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710771011.3A CN109426384B (en) | 2017-08-31 | 2017-08-31 | Touch panel and touch panel detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710771011.3A CN109426384B (en) | 2017-08-31 | 2017-08-31 | Touch panel and touch panel detection method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109426384A true CN109426384A (en) | 2019-03-05 |
| CN109426384B CN109426384B (en) | 2021-06-04 |
Family
ID=65505209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710771011.3A Active CN109426384B (en) | 2017-08-31 | 2017-08-31 | Touch panel and touch panel detection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023216706A1 (en) * | 2022-05-11 | 2023-11-16 | 中兴通讯股份有限公司 | Electrostatic protection method, electronic device and computer-readable storage medium |
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| CN102446012A (en) * | 2010-09-30 | 2012-05-09 | 联胜（中国）科技有限公司 | Touch panel structure and touch display panel |
| CN202183088U (en) * | 2011-07-29 | 2012-04-04 | 比亚迪股份有限公司 | Circuit board and touch control device having the same |
| CN202523030U (en) * | 2012-03-01 | 2012-11-07 | 华映视讯（吴江）有限公司 | Touch panel |
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| CN109426384B (en) | 2021-06-04 |
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