CN109541365A - A kind of capacitance plate short circuit test method, capacitance plate and mobile terminal - Google Patents
A kind of capacitance plate short circuit test method, capacitance plate and mobile terminal Download PDFInfo
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- CN109541365A CN109541365A CN201811295864.5A CN201811295864A CN109541365A CN 109541365 A CN109541365 A CN 109541365A CN 201811295864 A CN201811295864 A CN 201811295864A CN 109541365 A CN109541365 A CN 109541365A
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- control electrode
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
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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
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
Abstract
The present invention provides a kind of capacitance plate short circuit test method, capacitance plate and mobile terminal, method includes: the first touch control electrode to be detected of selection and the second touch control electrode to be detected；Output mode is set by the first input/output interface connecting in touch-control IC with the first touch control electrode to be detected；Input pattern is set by the second input/output interface connecting in touch-control IC with the second touch control electrode to be detected；High-impedance state mode or low level output mode are set by remaining input/output interface in touch-control IC；By the first input/output interface outputs level signals, detect whether the second input/output interface receives feedback signal；If receiving feedback signal, feedback signal is compared with the level signal, if feedback signal is consistent with level signal, it is determined that short circuit occurs between the first touch control electrode to be detected and the second touch control electrode to be detected；This method is simple and reliable, and by simple signal processing, the detection of touch control electrode short circuit in capacitance plate can be realized.
Description
Technical field
The present invention relates to capacitance plate the field of test technology more particularly to a kind of capacitance plate short circuit test method, capacitance plate and
Mobile terminal.
Background technique
The touch control electrode of capacitance touching control screen includes driving electrodes and induction electrode, and driving electrodes and induction electrode pass through lead
It is connect with touch-control IC, touch-control IC scans touch control electrode layer, sends driving signal and receives inductive signal.
Under normal circumstances, it should not interfere with each other independently of each other between each electrode, but will appear mistake in process of production
Accidentally or processing is abnormal, leads to the connection for occurring a constant impedance between electrode, short circuit occurs, short circuit will lead to abnormal signal.
Summary of the invention
It is an object of the invention to ask for abnormal signal caused by above-mentioned capacitance plate inter-electrode short-circuit in the prior art
Topic proposes a kind of capacitance plate short circuit test method, capacitance plate and mobile terminal, can have to electrode short-circuit in capacitance plate
The detection of effect.
A kind of capacitance plate short circuit test method, comprising:
Select the first touch control electrode to be detected and the second touch control electrode to be detected；
Output mode is set by the first input/output interface connecting in touch-control IC with the first touch control electrode to be detected；
Input pattern is set by the second input/output interface connecting in touch-control IC with the second touch control electrode to be detected；
High-impedance state mode or low level output mode are set by remaining input/output interface in touch-control IC；
By the first input/output interface outputs level signals, detect whether the second input/output interface receives instead
Feedback signal；
If receiving feedback signal, the feedback signal is compared with the level signal, if described anti-
Feedback signal is consistent with the level signal, it is determined that between first touch control electrode to be detected and the second touch control electrode to be detected
Short circuit occurs.
Further, the level signal includes multiple high level signals and low level signal.
It further, is M times by the number of the first input/output interface outputs level signals；
If receiving feedback signal, wherein n times feedback signal is consistent with level signal, andThen determine institute
It states and short circuit occurs between the first touch control electrode to be detected and the second touch control electrode to be detected.
Further, the value range of M is 3-10.
Further, if the second input/output interface is not received by feedback signal, it is determined that the first touch-control to be detected
There is no short circuits between electrode and the second touch control electrode to be detected.
Further, the method also includes:
Select different touch control electrodes to be detected respectively as the first touch control electrode to be detected and second in each round test
Touch control electrode carries out more wheel loop tests, finds out touch control electrode short-circuit in capacitance plate.
Further, preset duration is spaced between each round test.
Further, the preset duration is 5 milliseconds -10 milliseconds.
A kind of capacitance plate, applied to above-mentioned capacitance plate short circuit test method, the capacitance plate includes touch-control IC and multiple
Touch control electrode, the touch-control IC include multiple input/output interfaces, the multiple touch control electrode by a plurality of leads respectively with institute
Multiple input/output interfaces connection of touch-control IC is stated, the touch-control IC is for executing:
Select the first touch control electrode to be detected and the second touch control electrode to be detected；
Output mode is set by the first input/output interface connecting with the first touch control electrode to be detected；
Input pattern is set by the second input/output interface connecting with the second touch control electrode to be detected；
High-impedance state mode or low level output mode are set by remaining input/output interface；
By the first input/output interface outputs level signals, detect whether the second input/output interface receives instead
Feedback signal；
If receiving feedback signal, the feedback signal is compared with the level signal, if described anti-
Feedback signal is consistent with the level signal, it is determined that between first touch control electrode to be detected and the second touch control electrode to be detected
Short circuit occurs.
A kind of mobile terminal, including above-mentioned capacitance plate.
Capacitance plate short circuit test method, capacitance plate and mobile terminal provided by the invention, include at least it is following the utility model has the advantages that
(1) method is simple and reliable, and by simple signal processing, the inspection of touch control electrode short circuit in capacitance plate can be realized
It surveys；
(2) input/output interface (I/O port) characteristic for utilizing touch-control IC itself, can be realized detection, hard without increasing other
Part equipment saves production cost；
(3) whether short-circuit judge between touch control electrode by repeatedly test, can be further improved the accuracy of test；
(4) short-circuit test can be carried out to the touch control electrode of whole screen, and measuring stability is good.
Detailed description of the invention
Fig. 1 is a kind of flow chart of embodiment of capacitance plate short circuit test method provided by the invention.
Fig. 2 is the signal schematic representation in capacitance plate short circuit test method provided by the invention.
Fig. 3 is a kind of structural schematic diagram of embodiment of capacitance plate provided by the invention.
Specific embodiment
To make the purpose of the present invention, technical solution and effect clearer, clear and definite, right as follows in conjunction with drawings and embodiments
The present invention is further described.It should be appreciated that described herein, specific examples are only used to explain the present invention, is not used to
Limit the present invention.
Embodiment one
With reference to Fig. 1, the present embodiment provides a kind of capacitance plate short circuit test methods, comprising:
Step S101 selects the first touch control electrode to be detected and the second touch control electrode to be detected；
Step S102 sets defeated for the first input/output interface connecting in touch-control IC with the first touch control electrode to be detected
Mode out；
Step S103 sets defeated for the second input/output interface connecting in touch-control IC with the second touch control electrode to be detected
Enter mode；
Remaining input/output interface in touch-control IC is set high-impedance state mode or low level output mould by step S104
Formula；
Step S105, by the first input/output interface outputs level signals, detecting the second input/output interface is
It is no to receive feedback signal；
The feedback signal is compared, such as by step S106 if receiving feedback signal with the level signal
Feedback signal described in fruit is consistent with the level signal, it is determined that first touch control electrode to be detected and the second touch-control to be detected
Short circuit occurs between electrode.
Specifically, step S101 is executed, includes multiple touch control electrodes in capacitance plate, multiple touch control electrodes pass through a plurality of signal
Line is connect with multiple input/output interfaces (I/O port) of touch-control IC respectively, and selection needs to detect two touch control electrodes, respectively as
First touch control electrode to be detected and the second touch control electrode to be detected.
Further, step S102- step S104 is executed, the will connect in touch-control IC with the first touch control electrode to be detected
One input/output interface is set as output mode, be used for outputs level signals, by touch-control IC with the second touch control electrode to be detected
Second input/output interface of connection is set as input pattern, for receiving feedback signal, remaining input and output in touch-control IC
Interface is set as high-impedance state mode or low level output mode, preferably high-impedance state mode, can save electric energy.Low level mode
Under export low level always.
Further, step S105 is executed, by the first input/output interface outputs level signals, the second input of detection is defeated
Whether outgoing interface receives feedback signal.
As a preferred embodiment, level signal includes multiple high level signals and low level signal, high level
The quantity of signal and low level signal can be 6-20, for example, the level signal is 101010.
If the second input/output interface is not received by feedback signal, it is determined that the first touch control electrode to be detected and second
There is no short circuits between touch control electrode to be detected
Further, step S106 is executed, with reference to Fig. 2, if receiving feedback signal, by the feedback signal and institute
It states level signal to be compared, if the feedback signal is consistent with the level signal, for example, the level signal sent is
101010, the feedback signal received is also 101010, then illustrates the first touch control electrode to be detected and the second touch-control electricity to be detected
There are the connections of a constant impedance between pole, thus may determine that first touch control electrode to be detected and the second touch-control electricity to be detected
Short circuit occurs between pole.
Capacitance plate short circuit test method provided in this embodiment, include at least it is following the utility model has the advantages that
(1) method is simple and reliable, and by simple signal processing, the inspection of touch control electrode short circuit in capacitance plate can be realized
It surveys；
(2) input/output interface (I/O port) characteristic for utilizing touch-control IC itself, can be realized detection, hard without increasing other
Part equipment saves production cost.
Embodiment two
The present embodiment provides a kind of capacitance plate short circuit test methods, comprising:
Step S201 selects the first touch control electrode to be detected and the second touch control electrode to be detected；
Step S202 sets defeated for the first input/output interface connecting in touch-control IC with the first touch control electrode to be detected
Mode out；
Step S203 sets defeated for the second input/output interface connecting in touch-control IC with the second touch control electrode to be detected
Enter mode；
Remaining input/output interface in touch-control IC is set high-impedance state mode or low level output mould by step S204
Formula；
Step S205, by the first input/output interface outputs level signals, number is M times, the second input of detection
Whether output interface receives feedback signal；
Step S206, if receiving feedback signal, wherein n times feedback signal is consistent with level signal, andIt then determines and short circuit occurs between the described first touch control electrode to be detected and the second touch control electrode to be detected.
Step S201 to step S204 is consistent to step S104 with the step S101 in embodiment one, and details are not described herein.
Further, in step S205, the number by the first input/output interface outputs level signals is M times,
As a preferred embodiment, the value range of M is 3-10, specifically may be set according to actual conditions.
In step S206, the feedback signal received is detected, if the feedback signal for wherein there are n times to receive and level are believed
It is number consistent, andThen determine occur between the described first touch control electrode to be detected and the second touch control electrode to be detected it is short
Road, for example, sending ten level signals can then be determined as wherein there is 9 feedback signals received consistent with level signal
Short circuit.
Capacitance plate short circuit test method provided in this embodiment, by repeatedly test judge it is whether short between touch control electrode
Road can be further improved the accuracy of test.
Embodiment three
The present embodiment provides capacitance plate short circuit test methods, using such as method of embodiment one or embodiment two to entire electricity
The touch control electrode of Rong Ping carries out short-circuit test.
In capacitance plate include multiple touch control electrodes, each round test in select different touch control electrodes respectively as first to
Touch control electrode and the second touch control electrode to be detected are detected, more wheel loop tests are carried out, finds out touch-control electricity short-circuit in capacitance plate
Pole.
Assuming that including 7 touch control electrodes in capacitance plate, number is respectively 1,2,3,4,5,6,7, then follows in the following manner
Ring:
The first round will number the touch control electrode for being 1 as the first touch control electrode to be detected, be respectively 2 by number, 3,4,5,
6,7 touch control electrode carries out short-circuit survey using such as method of embodiment one or embodiment two as the second touch control electrode to be detected
Examination；
Number is respectively 3,4,5,6,7 as the first touch control electrode to be detected by the touch control electrode that number is 2 by the second wheel
Touch control electrode as the second touch control electrode to be detected, short-circuit test is carried out using such as method of embodiment one or embodiment two；
Third round will number the touch control electrode for being 3 as the first touch control electrode to be detected, be respectively 4,5,6,7 by number
Touch control electrode carries out short-circuit test as the second touch control electrode to be detected, using such as method of embodiment one or embodiment two；
Fourth round will number the touch control electrode for being 4 as the first touch control electrode to be detected, will number the touching for being 5,6,7 respectively
Electrode is controlled as the second touch control electrode to be detected, short-circuit test is carried out using such as method of embodiment one or embodiment two；
The touch control electrode that number is 5 by the 5th wheel is as the first touch control electrode to be detected, the touch-control for being respectively 6,7 by number
Electrode carries out short-circuit test as the second touch control electrode to be detected, using such as method of embodiment one or embodiment two；
The touch control electrode that number is 7 by the 6th wheel makees the touch control electrode that number is 7 as the first touch control electrode to be detected
For the second touch control electrode to be detected, short-circuit test is carried out using such as method of embodiment one or embodiment two.
As a preferred embodiment, being spaced preset duration between each round test.
As a preferred embodiment, the preset duration is 5 milliseconds -10 milliseconds.
According to the characteristic of touch chip and capacitance sensor charge and discharge, it is spaced preset duration between each round test, it can be with
Last round of charge and discharge are reduced to the residual effect of next round, so that test result is more stable.
Capacitance plate short circuit test method provided in this embodiment can carry out short-circuit test to the touch control electrode of whole screen, and
Measuring stability is good.
Example IV
With reference to Fig. 3, the present embodiment provides a kind of capacitance plates, applied to above-mentioned capacitance plate short circuit test method, the electricity
Rong Ping includes touch-control IC201 and multiple touch control electrodes 202, and the touch-control IC includes multiple input/output interfaces, multiple touch-control electricity
Pole 202 is connect with multiple input/output interfaces of touch-control IC201 respectively by a plurality of leads, and touch-control IC201 is for executing:
Select the first touch control electrode to be detected and the second touch control electrode to be detected；
Output mode is set by the first input/output interface connecting with the first touch control electrode to be detected；
Input pattern is set by the second input/output interface connecting with the second touch control electrode to be detected；
High-impedance state mode or low level output mode are set by remaining input/output interface；
By the first input/output interface outputs level signals, detect whether the second input/output interface receives instead
Feedback signal；
If receiving feedback signal, the described first touch control electrode to be detected and second are judged according to the feedback signal
Whether touch control electrode to be detected occurs short circuit.
As a preferred embodiment, the level signal includes multiple high level signals and low level signal, institute
The quantity for stating high level signal and low level signal is 6-20.
As a preferred embodiment, the number for passing through the first input/output interface outputs level signals is M
It is secondary.
Further, touch-control IC201 is also used to execute: if receiving feedback signal, wherein n times feedback signal and level
Signal is consistent, andIt then determines and occurs between the described first touch control electrode to be detected and the second touch control electrode to be detected
Short circuit.
As a preferred embodiment, the value range of M is 3-10.
Touch-control IC201 is also used to execute:, if the second input/output interface is not received by feedback signal, it is determined that the
There is no short circuits between one touch control electrode to be detected and the second touch control electrode to be detected.
Touch-control IC201 is also used to execute::
Select different touch control electrodes to be detected respectively as the first touch control electrode to be detected and second in each round test
Touch control electrode carries out more wheel loop tests, finds out touch control electrode short-circuit in capacitance plate.
As a preferred embodiment, being spaced preset duration between each round test.
As a preferred embodiment, the preset duration is 5 milliseconds -10 milliseconds.
Concrete operating principle please refers to embodiment one, embodiment two and embodiment three, and details are not described herein.
Capacitance plate provided in this embodiment, include at least it is following the utility model has the advantages that
(1) method is simple and reliable, and by simple signal processing, the inspection of touch control electrode short circuit in capacitance plate can be realized
It surveys；
(2) input/output interface (I/O port) characteristic for utilizing touch-control IC itself, can be realized detection, hard without increasing other
Part equipment saves production cost；
(3) whether short-circuit judge between touch control electrode by repeatedly test, can be further improved the accuracy of test；
(4) short-circuit test can be carried out to the touch control electrode of whole screen, and measuring stability is good.
Embodiment five
The present embodiment provides a kind of mobile terminals, including the capacitance plate as described in embodiment one.
Mobile terminal provided in this embodiment, including but not limited to mobile phone, tablet computer, display, laptop etc.
Any products or components having a display function.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (10)
1. a kind of capacitance plate short circuit test method characterized by comprising
Select the first touch control electrode to be detected and the second touch control electrode to be detected；
Output mode is set by the first input/output interface connecting in touch-control IC with the first touch control electrode to be detected；
Input pattern is set by the second input/output interface connecting in touch-control IC with the second touch control electrode to be detected；
High-impedance state mode or low level output mode are set by remaining input/output interface in touch-control IC；
By the first input/output interface outputs level signals, detect whether the second input/output interface receives feedback letter
Number；
If receiving feedback signal, the feedback signal is compared with the level signal, if the feedback letter
It is number consistent with the level signal, it is determined that occur between first touch control electrode to be detected and the second touch control electrode to be detected
Short circuit.
2. capacitance plate short circuit test method according to claim 1, which is characterized in that the level signal includes multiple high
Level signal and low level signal.
3. capacitance plate short circuit test method according to claim 1, which is characterized in that connect by first input and output
The number of mouth outputs level signals is M times；
If receiving feedback signal, wherein n times feedback signal is consistent with level signal, andThen determine described
Short circuit occurs between one touch control electrode to be detected and the second touch control electrode to be detected.
4. capacitance plate short circuit test method according to claim 3, which is characterized in that the value range of M is 3-10.
5. capacitance plate short circuit test method according to claim 1, which is characterized in that if the second input/output interface does not have
Receive feedback signal, it is determined that there is no short between the first touch control electrode to be detected and the second touch control electrode to be detected
Road.
6. capacitance plate short circuit test method according to claim 1, which is characterized in that the method also includes:
Select different touch control electrodes respectively as the first touch control electrode to be detected and the second touch-control to be detected in each round test
Electrode carries out more wheel loop tests, finds out touch control electrode short-circuit in capacitance plate.
7. capacitance plate short circuit test method according to claim 6, which is characterized in that interval is default between each round test
Duration.
8. capacitance plate short circuit test method according to claim 7, which is characterized in that the preset duration is 5 millisecond -10
Millisecond.
9. a kind of capacitance plate, which is characterized in that it is applied to capacitance plate short circuit test method a method as claimed in any one of claims 1-8,
The capacitance plate includes touch-control IC and multiple touch control electrodes, and the touch-control IC includes multiple input/output interfaces, the multiple touching
Control electrode is connect with multiple input/output interfaces of the touch-control IC respectively by a plurality of leads, and the touch-control IC is for executing:
Select the first touch control electrode to be detected and the second touch control electrode to be detected；
Output mode is set by the first input/output interface connecting with the first touch control electrode to be detected；
Input pattern is set by the second input/output interface connecting with the second touch control electrode to be detected；
High-impedance state mode or low level output mode are set by remaining input/output interface；
By the first input/output interface outputs level signals, detect whether the second input/output interface receives feedback letter
Number；
If receiving feedback signal, the feedback signal is compared with the level signal, if the feedback letter
It is number consistent with the level signal, it is determined that occur between first touch control electrode to be detected and the second touch control electrode to be detected
Short circuit.
10. a kind of mobile terminal, which is characterized in that including capacitance plate as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811295864.5A CN109541365A (en) | 2018-11-01 | 2018-11-01 | A kind of capacitance plate short circuit test method, capacitance plate and mobile terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811295864.5A CN109541365A (en) | 2018-11-01 | 2018-11-01 | A kind of capacitance plate short circuit test method, capacitance plate and mobile terminal |
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Family
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