CN107907781A - The determination methods and burn out detection equipment of line broken circuit position - Google Patents
The determination methods and burn out detection equipment of line broken circuit position Download PDFInfo
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- CN107907781A CN107907781A CN201711241280.5A CN201711241280A CN107907781A CN 107907781 A CN107907781 A CN 107907781A CN 201711241280 A CN201711241280 A CN 201711241280A CN 107907781 A CN107907781 A CN 107907781A
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- probe
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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
- 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
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/281—Specific types of tests or tests for a specific type of fault, e.g. thermal mapping, shorts testing
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- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The present invention relates to the determination methods and burn out detection equipment of a kind of line broken circuit position.The burn out detection equipment analyzes the fracture position of the silver paste line of touch screen using the determination methods of line broken circuit position.Wherein the determination methods comprise the following steps：One touch-control circuit plate is provided；A probe is connected in the signal transmitting terminal of the touch-control circuit plate, the probe is connected on the driving chip of the touch screen；In one probe of signal receiving end connection of the touch-control circuit plate, the probe is slided and is attached on the film of the touch screen；Sense capacitance value between the probe and the probe is detected by the touch-control circuit plate；Judge whether the sense capacitance value is less than predetermined capacitive threshold value, be that the silver paste line for confirming the touch screen is broken at the position of the probe instruction.The determination methods of the burn out detection equipment utilization line broken circuit position can accurately judge the broken position of the silver paste line of touch screen, and will not destroy product connectivity.
Description
Technical field
The present invention relates to touch screen detection technique field, determination methods more particularly to a kind of line broken circuit position and disconnected
Line detection device.
Background technology
In the prior art, GFF (Glass Film Film, full coating technique) touch screen is frequent in cabling production process
There is the silver paste line on its both sides there is a situation where breaking, pass through the damage position of micro- sem observation silver paste line in industry at present.And
Since the silver paste line of GFF structures is produced on film (film), then pass through OCA (Optical Clear Adhesive, light
Learn glue) attach on glass cover-plate, i.e., silver paste line belongs to built-in setting and circuit is more soft, so working as has sharp thing thorn
During to silver paste line, silver paste line can be easily broken, and film and OCA can also be deformed upon.But by the regular hour, this
The deformation of sample may recover, and observe the crackle of silver paste line under the microscope nor apparent.But seen using microscope
Examine, it is of long duration staff to be made easily to produce fatigue.In addition, if then need to pierce through using universal meter measurement circuit open circuit
Film, then overlaps syringe needle to silver paste line, can so cause product secondary damage open a way and it is irreversible, also, if
It is unsuccessful in one-time detection to be just possible to not reaffirm open-circuit position.
The content of the invention
Based on this, it is necessary to for the detection side of the broken position for the silver paste line being directed in the prior art in GFF touch screens
Its reliability of formula is relatively low, and can cause product that the problem of secondary damage is opened a way occurs, there is provided a kind of silver built-in for touch screen
The broken position of slurry line can accurately judge that analysis efficiency is higher, and will not destroy sentencing for the internuncial line broken circuit position of product
Disconnected method and burn out detection equipment.
A kind of determination methods of line broken circuit position, the fracture position of the silver paste line for analyzing touch screen, including it is following
Step：One touch-control circuit plate is provided；A probe is connected in the signal transmitting terminal of the touch-control circuit plate, the probe is connected to
On the driving chip of the touch screen；In one probe of signal receiving end connection of the touch-control circuit plate, the probe is slided
It is attached on the film of the touch screen；The sensing electricity between the probe and the probe is detected by the touch-control circuit plate
Capacitance；Judge whether the sense capacitance value is less than predetermined capacitive threshold value, be the silver paste line for confirming the touch screen in described
It is broken at the position of probe instruction.
In one of the embodiments, judge whether the sense capacitance value is less than predetermined capacitive threshold value, be to confirm institute
State the silver paste line of touch screen to be broken at the position of the probe instruction, otherwise continue to slide the probe being detected.
In one of the embodiments, it is described to be detected by the touch-control circuit plate between the probe and the probe
Further included before the step of sense capacitance value：
The probe is alignd with one end of the film of the touch screen, slides described pop one's head in so that described pop one's head in towards institute
The other end for stating the film of touch screen gradually translates.
In one of the embodiments, it is described that the probe aligns with one end of the film of the touch screen, slide institute
State during popping one's head in so that the other end of film of the probe towards the touch screen gradually translates, the determination methods are also
Including step：
The probe is slided by default sliding distance stepping, the probe is moved to a sliding position every time, obtains institute
State the sense capacitance value of the probe at each sliding position, and the sense capacitance value and the predetermined capacitive threshold value
Size.
In one of the embodiments, the sense capacitance value for obtaining the probe at each sliding position,
And the step of size of the sense capacitance value and the predetermined capacitive threshold value, includes：
When the sense capacitance value is more than the predetermined capacitive threshold value, then continues to slide the probe and be detected；
When the sense capacitance value is less than the predetermined capacitive threshold value, then stop sliding the probe, and described in record
The indicated position of probe.
In one of the embodiments, it is described to judge whether the sense capacitance value is less than predetermined capacitive threshold value, it is then true
Recognize the silver paste line of the touch screen includes at the position of the probe instruction the step of fracture：
The probe receives the transmitting signal of the signal transmitting terminal, by the transmitting silver of the signal by the touch screen
Slurry line is transmitted to the probe, and the probe receives the transmitting signal and feeds back to the touch-control circuit plate；
Increase the transmission power of the transmitting signal of the signal transmitting terminal, obtain the sense capacitance value.
In one of the embodiments, it is described to judge whether the sense capacitance value is less than predetermined capacitive threshold value, it is then true
Recognize the silver paste line of the touch screen includes at the position of the probe instruction the step of fracture：
The probe receives the transmitting signal of the signal transmitting terminal, by the transmitting silver of the signal by the touch screen
Slurry line is transmitted to the probe, and the probe receives the transmitting signal and feeds back to the touch-control circuit plate；
Increase the tranmitting frequency of the transmitting signal of the signal transmitting terminal, obtain the sense capacitance value.
In one of the embodiments, it is described to judge whether the sense capacitance value is less than predetermined capacitive threshold value, it is then true
Recognize the silver paste line of the touch screen includes at the position of the probe instruction the step of fracture：
The probe receives the transmitting signal of the signal transmitting terminal, by the transmitting silver of the signal by the touch screen
Slurry line is transmitted to the probe, and the probe receives the transmitting signal and feeds back to the touch-control circuit plate；
Increase the sensing number of teeth of the probe, obtain the sense capacitance value.
In one of the embodiments, it is described to judge whether the sense capacitance value is less than predetermined capacitive threshold value, it is then true
Recognize the silver paste line of the touch screen includes at the position of the probe instruction the step of fracture：
The probe receives the transmitting signal of the signal transmitting terminal, by the transmitting silver of the signal by the touch screen
Slurry line is transmitted to the probe, and the probe receives the transmitting signal and feeds back to the touch-control circuit plate；
Increase the detection area of the probe, obtain the sense capacitance value.
A kind of burn out detection equipment, including touch-control circuit plate and the display being electrically connected with the touch-control circuit plate and control
Device processed；The touch-control circuit plate includes signal transmitting terminal and signal receiving end, and the signal transmitting terminal is connected with probe, the letter
Number receiving terminal is connected with probe, and the probe is used for the driving chip for connecting touch screen, and the probe is attached at tactile for slip
Control the film of screen；The touch-control circuit plate is used to detect the sense capacitance value between the probe and the probe, the display
Device is used to show the sense capacitance value, and the controller is used to judge whether the sense capacitance value is less than predetermined capacitive threshold
Value.
Above-mentioned burn out detection equipment, by using the determination methods of above-mentioned line broken circuit position, so that and touch-control circuit
Capacitance structure is formed between the probe and probe of plate connection, by judging whether the sense capacitance value between probe and probe is less than
Predetermined capacitive threshold value, so as to accurately be judged for the broken position for the silver paste line for being built in touch screen, and analysis efficiency
It is higher, the connectivity of touch-control touch screen will not be destroyed, on the one hand can effectively find the touch screen to break, another aspect energy
Enough accurately determine the broken position of the silver paste line of touch screen.
Brief description of the drawings
Fig. 1 is the flow diagram of the determination methods of the line broken circuit position of an embodiment.
Fig. 2 is the logical construction schematic diagram of the burn out detection equipment of an embodiment.
Embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In attached drawing
Give the better embodiment of the present invention.But the present invention can realize in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose for providing these embodiments is to make to understand more the disclosure
Add thorough and comprehensive.
It should be noted that when element is referred to as " being arranged at " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side ", " top ", " bottom ", " bottom ", " top " and similar statement for illustrative purposes only, are not offered as being only
One embodiment.
Unless otherwise defined, all of technologies and scientific terms used here by the article is with belonging to technical field of the invention
The normally understood implication of technical staff is identical.Term used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term as used herein " and/or " include one or more
The arbitrary and all combination of relevant Listed Items.
For example, a kind of determination methods of line broken circuit position, the fracture position of the silver paste line for analyzing touch screen.It is described
The determination methods of line broken circuit position comprise the following steps：One touch-control circuit plate is provided；Sent out in the signal of the touch-control circuit plate
One probe of end connection is penetrated, the probe is connected on the driving chip of the touch screen；In the signal of the touch-control circuit plate
One probe of receiving terminal connection, the probe is slided and is attached on the film of the touch screen；Examined by the touch-control circuit plate
Survey the sense capacitance value between the probe and the probe；Judge whether the sense capacitance value is less than predetermined capacitive threshold value,
It is that the silver paste line for confirming the touch screen is broken at the position of the probe instruction.
For example, a kind of burn out detection equipment, including touch-control circuit plate and the display that is electrically connected with the touch-control circuit plate
Device and controller；The touch-control circuit plate includes signal transmitting terminal and signal receiving end, and the signal transmitting terminal is connected with probe,
The signal receiving end is connected with probe, and the probe is used for the driving chip for connecting touch screen, and the probe is used to slide patch
Invest the film of touch screen；The touch-control circuit plate is used to detect the sense capacitance value between the probe and the probe, institute
State display to be used to show the sense capacitance value, the controller is used to judge whether the sense capacitance value is less than default electricity
Hold threshold value.Wherein, the touch-control circuit plate being applicable in the determination methods of the touch-control circuit plate, that is, line broken circuit position.
Referring to Fig. 1, in one embodiment, a kind of determination methods of line broken circuit position, comprise the following steps：
S210：One touch-control circuit plate is provided.
For example, the touch-control circuit plate is an active circuit plate, it can outwards launch signal, while can also receive letter
Number.Specifically, which has signal transmitting terminal and signal receiving end, wherein the touch-control transmitting terminal is defined as TX
End, the touch-control receiving terminal are defined as RX ends, and the touch-control circuit plate launches signal by TX ends, and RX ends receive transmitting letter
Number.Signal transmission loop is formed between signal transmitting terminal and signal receiving end.
S220：A probe is connected in the signal transmitting terminal of the touch-control circuit plate, the probe is connected to the touch-control
On the driving chip of screen.
For example, the touch screen includes glass cover-plate, silver paste line and the film being cascading, wherein silver paste line is set
It is placed on film, then the film for being provided with silver paste line is attached on glass plate cover board by OCA optical cements.For example, driving
Chip is FPC circuit boards, i.e. flexible PCB, which is connected with silver paste line.The probe is used for realization will be described
Touch-control circuit plate is connected with the driving chip, so that the signal of touch-control circuit plate transmitting can pass through the drive
Dynamic chip is transmitted to silver paste line.It should be understood that for touch screen, its silver paste line has more, each silver paste line all with
Driving chip connects.For example, the probe is overlapped in the golden finger of the driving chip, and for example, the probe is overlapped in described
The pin of driving chip.To realize that the probe is connected indirectly with silver paste line, to avoid damage silver paste line 30.
S230：In one probe of signal receiving end connection of the touch-control circuit plate, the probe slip is attached at described
On the film of touch screen；
For example, the probe is popped one's head in for planar, it is made of multiple sensing teeth, has wider sensitive surface.By the spy
The closely described film of head rest, and slowly slided by one end of film towards the other end.For example, the thickness of the film is 0.05 milli
Rice, so when the probe send transmitting signal, the probe can receive it is described transmitting signal when, then the probe with
Capacitance structure is formed between the probe.Specifically, capacitance key principle is referred to, i.e., condenser type driving chip is in driving electricity
Road signal transmitting terminal (TX ends) sends the square-wave signal of certain frequency, is then carried out in the signal receiving end (RX ends) of receiving circuit
Signal collection processing, for example, by processing of circuit such as analog-to-digital conversion, filtering, amplifications.If electricity can be formed between TX ends and RX ends
Hold structure, then the initial data of the capacitance (Rawdata) of collection can be much larger than 0, when both distances are remote enough or TX does not have
There is frequency to send.For example, signal transmitting is closed, and for example, signal transmitting is blocked, then the Rawdata that RX ends are collected can be close to 0.I.e.
The probe is sensed and received and sent by the probe and by institute on the surface of the film during continuous forward slip
The transmitting signal of silver paste line transmission is stated, when silver paste line is intact, then the probe can receive the transmitting signal；Conversely
Ground, when silver paste line is cracked to be broken, then the probe just can not receive the transmitting signal, so work
Personnel can realize the position that accurate judgement silver paste line 30 is broken by the position indicated by the probe.In addition,
Capacitance structure is formed by probe and probe, the fracture position that analysis judges silver paste line is carried out by the way of capacitance is measured,
The signal of sensing silver paste line transmission is carried out across film due to popping one's head in, silver paste line can be avoided direct contact with and be detected, from
And avoiding wiring from stabbing silver paste line causes product secondary impaired, and destroy its continuity.
S240：Sense capacitance value between the probe and the probe is detected by the touch-control circuit plate.
Wherein, when silver paste line is intact, then the capacitance that is formed between the probe and the probe, by described
The detection of touch-control circuit plate can detect the sense capacitance value between it.By the size of the sense capacitance value, can then sentence
Disconnected to analyze, whether the silver paste line at the position indicated by presently described probe is broken.For example, work as sense capacitance value
Much larger than 0, then illustrate the position indicated by current probe align setting silver paste line it is intact, when test obtains sense capacitance value
Gradually during decay, then illustrate there is silver paste line to be broken in the meantime, signal interruption will be launched, so that probe can not sense
The transmitting signal is received, so that not re-forming capacitance structure between probe and probe, so described sense capacitance value subtracts
It is zero less.
For example, the step that the sense capacitance value between the probe and the probe is detected by the touch-control circuit plate
Further included before rapid：The probe is alignd with one end of the film of the touch screen, slides the probe so that the probe
Gradually translated towards the other end of the film of the touch screen.
For example, one probe of signal receiving end connection in the touch-control circuit plate, the probe slip is attached at
Include after step on the film of the touch screen：The probe is alignd with one end of the film of the touch screen, is slided
It is described to pop one's head in so that the other end of probe towards the film of the touch screen gradually translates.
That is, the probe is alignd with one end of the film of the touch screen, slides the probe so that the probe court
The step of gradually being translated to the other end of the film of the touch screen receives in the signal described in step in the touch-control circuit plate
One probe of end connection, the probe slip is attached at after being performed on the film of the touch screen, is passing through institute described in step
State before the sense capacitance value that touch-control circuit plate is detected between the probe and the probe performs and carry out.
That is, the detection process of probe is by slowly sliding test by one end of film, gradually translation
The other end to film carries out uninterrupted test, so as to detect the sensing at each position of probe slip in real time
Capacitance, thus in order to staff obtain in time silver paste line broken string position.
S250：Judge whether the sense capacitance value is less than predetermined capacitive threshold value, be the then touch screen silver paste line in
It is broken at the position of the probe instruction.
It is the silver paste for confirming the touch screen for example, judging whether the sense capacitance value is less than predetermined capacitive threshold value
Line is broken at the position of the probe instruction, is otherwise continued to slide the probe and is detected.
Specifically, it is described that the probe aligns with one end of the film of the touch screen, the probe is slided so that institute
During the gradual translation of the other end for stating probe towards the film of the touch screen, the determination methods further include step：
The probe is slided by default sliding distance stepping, the probe is moved to a sliding position every time, obtains institute
State the sense capacitance value of the probe at each sliding position, and the sense capacitance value and the predetermined capacitive threshold value
Size.
Wherein, the default sliding distance is the distance of two neighboring silver paste line, and it is described pre- so often to slide one
If sliding distance, that is, stepping is once popped one's head in, i.e., probe often moves a sliding position, then measures the sense between a probe and probe
Survey capacitance.Capacitance during the silver paste thread breakage that wherein predetermined capacitive threshold value is obtained by experimental calculation between probe and probe
Value, when the value is between silver paste thread breakage capacitance with it is intact when capacitance median, it is default for this when measuring sense capacitance value
During capacitance, then illustrate the silver paste thread breakage at the position indicated by popping one's head at this time, transmitting signal can not be by the silver paste line (also
Claim silver paste cabling) probe, signal attenuation are transferred to, therefore capacitance also decays, therefore staff can judge according to the data
Whether indicated silver paste line of popping one's head at this time is broken.The basis for estimation of the specific data is obtained by experimental analysis, herein no longer
Experimentation is described in detail.Capacitance of the capacitance with silver paste line when intact when the occurrence of predetermined capacitive threshold value disconnects for silver paste line
And be multiplied by capacitance coefficient, be formulated：Predetermined capacitive threshold value=(COpen circuit+CConnect) * capacitance coefficients, wherein capacitance coefficient takes
It is 0~1 to be worth scope, it is preferable that coefficient 0.5.
Further, the sense capacitance value for obtaining the probe at each sliding position, and described in comparison
The step of size of sense capacitance value and the predetermined capacitive threshold value, includes：When the sense capacitance value is more than the predetermined capacitive
During threshold value, then continue to slide the probe and be detected；When the sense capacitance value is less than the predetermined capacitive threshold value, then stop
Probe described in sliding stop, and record the position indicated by the probe.
Due to the distance that the distance for each stepping of popping one's head in is two neighboring silver paste line, per stepping once, then a number is measured
According to, that is, by way of detecting in real time, the sense capacitance Value Data that can obtain in time.Pass through the result that will be detected each time
With predetermined capacitive threshold value comparison, you can during clear acquisition stepping each time, the situation for indicated silver paste line of popping one's head in.Work as detection
The obtained sense capacitance value is more than the predetermined capacitive threshold value, then is passed through in the advanced path that illustrates to pop one's head at this time
The intact flawless of silver paste line, continues to detect so as to continue to slide probe；When the sense capacitance value that detection obtains
During less than the predetermined capacitive threshold value, then illustrate that the corresponding silver paste line in position place indicated by popping one's head at this time is broken, from
And stop sliding probe, the indicated position that will pop one's head in this moment is recorded, so that staff accurately analyzes the disconnected of silver paste line
Split place.
The determination methods of above-mentioned line broken circuit position, by the signal transmitting terminal linking probe in touch-control circuit plate, are believing
Number receiving terminal connection probe, during sliding probe so that it is slided by one end of film towards the other end so that
Transmitting signal can be transmitted by silver paste line, and capacitance structure is formed between probe and probe to realize.By detection probe with
Sense capacitance value between probe, and whether multilevel iudge sense capacitance value is less than predetermined capacitive threshold value, so as to according to capacitance
Operation principle, the fracture position for the silver paste line that accurate judgement is connected with film, and can be avoided by the way of above-mentioned indirectly testing
Directly contact silver paste line is tested, so as to effectively avoid secondary damage product.
In order to further lift the precision of the fracture position of location determination silver paste line, in one embodiment, the judgement institute
State whether sense capacitance value is less than predetermined capacitive threshold value, be to confirm the silver paste line of the touch screen in the position of the probe instruction
The step of place of putting is broken includes：
The probe receives the transmitting signal of the signal transmitting terminal, by the transmitting silver of the signal by the touch screen
Slurry line is transmitted to the probe, and the probe receives the transmitting signal and feeds back to the touch-control circuit plate；Increase the letter
The transmission power of the transmitting signal of number transmitting terminal, obtains the sense capacitance value.
Sent out by the power for the transmitting signal for increasing touch-control circuit plate, so high-power transmitting signal by probe
Go out, transmitted by silver paste line, probe senses through film and receives the high-power transmitting signal, so in probe and probe
Between the capacitive energy that is formed it is higher, measured sense capacitance value is relatively also higher.So less silver paste line of relative size
For, the silver paste line that analysis judges broken string is also more conducive to by larger capacitance.For example, the electricity by increasing light bulb
Pressure, so that the brightness of light bulb is increased, so compared to the quality that light bulb is detected in the case where brightness is relatively low
Quality, then the higher light bulb of brightness will form a sharp contrast with problem light bulb, so as to be more conducive to the quality of detection light bulb.
Same reason, by improving signal transmission power, so that the capacitance between probe and probe is increased, so compared to low work(
The crack conditions of silver paste line are detected under rate state, is conducive to more accurately analyze using high power transmission signal and judges
The fracture position of silver paste line.
In one embodiment, it is described to judge whether the sense capacitance value is less than predetermined capacitive threshold value, it is described in then confirmation
The step of silver paste line of touch screen is broken at the position of the probe instruction includes：
The probe receives the transmitting signal of the signal transmitting terminal, by the transmitting silver of the signal by the touch screen
Slurry line is transmitted to the probe, and the probe receives the transmitting signal and feeds back to the touch-control circuit plate；Increase the letter
The tranmitting frequency of the transmitting signal of number transmitting terminal, obtains the sense capacitance value.
Concrete analysis process can be found on the power for the transmitting for improving transmitting signal in above-described embodiment, to realize into one
The precision of the fracture position of step lifting location determination silver paste line.Reason is made a concrete analysis of referring to above-described embodiment, details are not described herein.
In one embodiment, it is described to judge whether the sense capacitance value is less than predetermined capacitive threshold value, it is described in then confirmation
The step of silver paste line of touch screen is broken at the position of the probe instruction includes：
The probe receives the transmitting signal of the signal transmitting terminal, by the transmitting silver of the signal by the touch screen
Slurry line is transmitted to the probe, and the probe receives the transmitting signal and feeds back to the touch-control circuit plate；Increase the spy
The sensing number of teeth of head, obtains the sense capacitance value.
I.e. for the probe with multiple sensing teeth, sense the quantity of tooth by increasing it, can so improve its sense
The ability of signal should be launched, so as to can further improve the precision of the fracture position of discriminatory analysis silver paste line.Make a concrete analysis of reason
Referring to above-described embodiment, details are not described herein.
In one embodiment, it is described to judge whether the sense capacitance value is less than predetermined capacitive threshold value, it is described in then confirmation
The step of silver paste line of touch screen is broken at the position of the probe instruction includes：
The probe receives the transmitting signal of the signal transmitting terminal, by the transmitting silver of the signal by the touch screen
Slurry line is transmitted to the probe, and the probe receives the transmitting signal and feeds back to the touch-control circuit plate；Increase the spy
The detection area of head, obtains the sense capacitance value.
I.e. for planar probe, by increasing its detection area, so that probe receives the sensing of transmitting signal
Face becomes larger, and so passes through capacitance calculation formula, it is known that the raising of conductor area, so as to lift sensing capacitance, so passes through
Higher sense capacitance value can be easy to further improve the precision of the fracture position of discriminatory analysis silver paste line.Make a concrete analysis of reason ginseng
See above-described embodiment, details are not described herein.
In order to confirm touch screen circuit breaking position in time, to lift broken position positioning analysis efficiency, in an embodiment
In, it is described to judge whether the sense capacitance value is less than predetermined capacitive threshold value, it is the silver paste line for confirming the touch screen in institute
The step of being broken at the position of probe instruction is stated to further include afterwards：Export the positional information indicated by the probe.
I.e. by exporting the positional information indicated by current probe in time, display record is carried out in a digital manner, so as to
Avoid changing the position of probe because staff neglects, cause the judgement of silver paste line end fracture position deviation occur.When obtaining
During indicated positional information of accurately popping one's head in, staff need not carry out handmarking's broken position, at any time can move probe
Open.So can not only the fracture position of silver paste line that detects of first time accurate recording probe, and effectively avoid artificially by mistake
It is dynamic, and cause broken position mistake to judge, so as to effectively improve the precision of touch screen broken position positioning.
Further, step is further included before the step of positional information indicated by the output probe：Send
Alarm signal, to prompt staff to stop sliding the probe.
Since the size of the sense capacitance value and the predetermined capacitive threshold value is handled by touch-control circuit plate
Analysis, thus for staff need be manually operated probe be detected when, it is difficult at the first time observe that analysis result is stopped
Only detect.By setting alarm signal so that alarm signal is consistent with the result for the silver paste thread breakage that current detection obtains, so
Staff can obtain analysis result in time and stop detection, and the indicated position that will pop one's head in gives accurate recording, consequently facilitating accurate
The fracture position of definite silver paste line.
In order to realize the position of full-automatic discriminatory analysis line broken circuit, further to lift discriminatory analysis efficiency, one compared with
In good embodiment, the determination methods of the line broken circuit position include the following steps：
It is arranged in order touch screen to be measured；The probe is overlapped on the driving chip of a touch screen to be measured automatically；Institute
One end of the film for the touch screen to be measured that probe overlaps automatically close to the probe automatically is stated, and the probe is described in
The other end of film slides；Sense capacitance value between the probe and the probe is detected by the touch-control circuit plate；Sentence
Whether the sense capacitance value of breaking is less than predetermined capacitive threshold value, is that the silver paste line for confirming the touch screen is indicated in the probe
Position at be broken；By detect obtain have the touch screen automatic push of silver paste thread breakage to being arranged at touch screen side to be measured
In ash can；The intact touch screen automatic push of obtained silver paste line will be detected to the work for being arranged at touch screen opposite side to be measured
In case.
Specifically, multiple touch screens to be measured are arranged in order by manipulator, so as to multiple tactile easy to be continued for
Control the detection work of screen.It is positioned over for example, multiple touch screens to be measured are arranged in order on detection workbench, in detection workbench
Both sides set an ash can and a work box respectively, and wherein manipulator is controlled by touch-control circuit plate, it can be obtained according to detection
Sense capacitance value judge the current touch screen detected silver paste line crack conditions, will be examined automatically according to Different Results
Touch screen after survey is handled respectively, so as to be conducive to replace being accomplished manually sorting work.
Its middle probe is arranged to automatically retractable structure with probe, in probe with setting sensor respectively on probe, so that
Easy to quickly catch next touch screen to be measured, in order to exactly be connected probe with the driving chip of touch screen to be measured, will visit
Head is accurately affixed to one end of the film of touch screen to be measured.Probe realizes its film along touch screen to be measured using Electromagnetic Control
One end slowly toward other end stepping, so as to reliably detect the crack conditions of each silver paste line.
The determination methods of above-mentioned line broken circuit position, by full-automatic detection mode, it can be achieved that batch completes detection touch-control
The work of screen, so that the work efficiency of detection touch screen is effectively improved, and the test essence by the way of this kind detects automatically
Degree is higher, so as to further lift the precision of detection touch screen silver paste line broken position, and effectively avoids directly using contact
Test and damage product.
Referring to Fig. 2, in another embodiment, a kind of burn out detection equipment 10, including touch-control circuit plate 100 and with institute
State the display 200 and controller 300 of touch-control circuit plate electrical connection.Further, the burn out detection equipment uses above-mentioned
The determination methods of line broken circuit position described in one embodiment are realized.
Further, the touch-control circuit plate 100 includes signal transmitting terminal 110 and signal receiving end 120, the signal hair
Penetrate end 110 and be connected with probe 111, the signal receiving end 120 is connected with probe 121, and the probe 111 is used to connect touch screen
Driving chip 20, the probe 121, which is used to slide, is attached at the film 30 of touch screen；
The touch-control circuit plate 100 is used to detect the sense capacitance value between the probe 111 and the probe 121, institute
State display 200 to be used to show the sense capacitance value, the controller 300 is used to judge whether the sense capacitance value is less than
Predetermined capacitive threshold value.
Specifically, for touch screen, including glass cover-plate 40, the silver paste line 50 and described thin being cascading
Film 30, wherein silver paste line 50 are arranged between glass cover-plate 40 and film 30, and wherein silver paste line is connected with driving chip 20, is passed through
Probe is connected with driving chip, is indirectly connected probe with silver paste line with realizing.Since film thickness is generally less than or equal to
0.05 millimeter.Therefore, it is attached the transmitting signal that is sent by probe of sensing close to film by that will pop one's head in, thus probe with
Capacitance structure is formed between probe, touch-control circuit plate 100 is by detecting the sensing between the probe 111 and the probe 121
Capacitance, and the sense capacitance value that detection is obtained feeds back to display, such staff can directly be obtained by display
Sense capacitance value at current probe position, while display has memory function, it can be by each step institute for stepping of popping one's head in
The sense capacitance value detected carries out record and shows, is so conducive to staff and is carrying out checking whether there is touching for test leakage afterwards
Control screen, in order to carry out repetition measurement.
The controller 300 is arranged on the touch-control circuit plate 100, and is electrically connected with touch-control circuit plate 100, i.e. institute
State the part that controller 300 is the touch-control circuit plate 100.The sense capacitance is judged by the controller 300
Whether value is less than predetermined capacitive threshold value.The sense capacitance value and predetermined capacitive threshold value are analyzed and processed by controller 300
Comparative result.Make a concrete analysis of process the sentencing using the line broken circuit position in any of the above-described embodiment of the broken position of silver paste line
Disconnected method is implemented.
Burn out detection equipment 10 described above, by the signal transmitting terminal linking probe in touch-control circuit plate, connects in signal
Receiving end connection probe, further connects silver paste line indirectly by the way that probe to be connected to the driving chip of touch screen to realize, so that
Transmitting signal is transmitted by silver paste line, capacitance structure is formed between probe and probe to realize, passes through display
Show the sense capacitance value between probe and probe, and judge whether the sense capacitance value is less than predetermined capacitive by controller
Threshold value, so as to obtain the broken position of accurate silver paste line according to the comparative result of controller.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses the several embodiments of the present invention, its description is more specific and detailed, but simultaneously
Cannot therefore it be construed as limiting the scope of the patent.It should be pointed out that come for those of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of determination methods of line broken circuit position, the fracture position of the silver paste line for analyzing touch screen, it is characterised in that
Comprise the following steps：
One touch-control circuit plate is provided；
A probe is connected in the signal transmitting terminal of the touch-control circuit plate, the probe is connected to the driving core of the touch screen
On piece；
In one probe of signal receiving end connection of the touch-control circuit plate, the probe is slided and is attached at the thin of the touch screen
On film；
Sense capacitance value between the probe and the probe is detected by the touch-control circuit plate；
Judge whether the sense capacitance value is less than predetermined capacitive threshold value, be the silver paste line for confirming the touch screen in the spy
It is broken at the position of head instruction.
2. the determination methods of line broken circuit position according to claim 1, it is characterised in that judge the sense capacitance value
Whether it is less than predetermined capacitive threshold value, is that the silver paste line for confirming the touch screen is broken at the position of the probe instruction, it is no
Then continue to slide the probe to be detected.
3. the determination methods of line broken circuit position according to claim 1, it is characterised in that described to pass through touch-control electricity
Road plate further includes before detecting the step of sense capacitance value between the probe and the probe：
The probe is alignd with one end of the film of the touch screen, slides described pop one's head in so that the probe is touched towards described
The other end for controlling the film of screen gradually translates.
4. the determination methods of line broken circuit position according to claim 3, it is characterised in that described by the probe and institute
One end alignment of the film of touch screen is stated, slides described pop one's head in so that the other end of film of the probe towards the touch screen
Gradually during translation, the determination methods further include step：
The probe is slided by default sliding distance stepping, the probe is moved to a sliding position every time, obtains the spy
The sense capacitance value of the head at each sliding position, and the sense capacitance value and the predetermined capacitive threshold value is big
It is small.
5. the determination methods of line broken circuit position according to claim 4, it is characterised in that the acquisition probe exists
The sense capacitance value at each sliding position, and the sense capacitance value and the size of the predetermined capacitive threshold value
Step includes：
When the sense capacitance value is more than the predetermined capacitive threshold value, then continues to slide the probe and be detected；
When the sense capacitance value is less than the predetermined capacitive threshold value, then stop sliding the probe, and record the probe
Indicated position.
6. the determination methods of line broken circuit position according to claim 1, it is characterised in that described to judge the sensing electricity
Whether capacitance is less than predetermined capacitive threshold value, is that the silver paste line for confirming the touch screen is broken at the position of the probe instruction
The step of include：
The probe receives the transmitting signal of the signal transmitting terminal, by the transmitting silver paste line of the signal by the touch screen
The probe is transmitted to, the probe receives the transmitting signal and feeds back to the touch-control circuit plate；
Increase the transmission power of the transmitting signal of the signal transmitting terminal, obtain the sense capacitance value.
7. the determination methods of line broken circuit position according to claim 1, it is characterised in that described to judge the sensing electricity
Whether capacitance is less than predetermined capacitive threshold value, is that the silver paste line for confirming the touch screen is broken at the position of the probe instruction
The step of include：
The probe receives the transmitting signal of the signal transmitting terminal, by the transmitting silver paste line of the signal by the touch screen
The probe is transmitted to, the probe receives the transmitting signal and feeds back to the touch-control circuit plate；
Increase the tranmitting frequency of the transmitting signal of the signal transmitting terminal, obtain the sense capacitance value.
8. the determination methods of line broken circuit position according to claim 1, it is characterised in that described to judge the sensing electricity
Whether capacitance is less than predetermined capacitive threshold value, is that the silver paste line for confirming the touch screen is broken at the position of the probe instruction
The step of include：
The probe receives the transmitting signal of the signal transmitting terminal, by the transmitting silver paste line of the signal by the touch screen
The probe is transmitted to, the probe receives the transmitting signal and feeds back to the touch-control circuit plate；
Increase the sensing number of teeth of the probe, obtain the sense capacitance value.
9. the determination methods of line broken circuit position according to claim 1, it is characterised in that described to judge the sensing electricity
Whether capacitance is less than predetermined capacitive threshold value, is that the silver paste line for confirming the touch screen is broken at the position of the probe instruction
The step of include：
The probe receives the transmitting signal of the signal transmitting terminal, by the transmitting silver paste line of the signal by the touch screen
The probe is transmitted to, the probe receives the transmitting signal and feeds back to the touch-control circuit plate；
Increase the detection area of the probe, obtain the sense capacitance value.
10. a kind of burn out detection equipment, it is characterised in that including touch-control circuit plate as claimed in any one of claims 1-9 wherein
And the display and controller being electrically connected with the touch-control circuit plate；
The touch-control circuit plate includes signal transmitting terminal and signal receiving end, and the signal transmitting terminal is connected with probe, the letter
Number receiving terminal is connected with probe, and the probe is used for the driving chip for connecting touch screen, and the probe is attached at tactile for slip
Control the film of screen；
The touch-control circuit plate is used to detect the sense capacitance value between the probe and the probe, and the display is used to show
Show the sense capacitance value, the controller is used to judge whether the sense capacitance value is less than predetermined capacitive threshold value.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711241280.5A CN107907781B (en) | 2017-11-30 | 2017-11-30 | Method for judging open circuit position of circuit and broken circuit detection equipment |
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| CN201711241280.5A CN107907781B (en) | 2017-11-30 | 2017-11-30 | Method for judging open circuit position of circuit and broken circuit detection equipment |
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| CN107907781B CN107907781B (en) | 2021-01-29 |
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| CN107907781B (en) | 2021-01-29 |
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