CN105301431B - A kind of micro- out of circuit test method of high-frequency percussion and test macro - Google Patents
A kind of micro- out of circuit test method of high-frequency percussion and test macro Download PDFInfo
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- CN105301431B CN105301431B CN201510799476.0A CN201510799476A CN105301431B CN 105301431 B CN105301431 B CN 105301431B CN 201510799476 A CN201510799476 A CN 201510799476A CN 105301431 B CN105301431 B CN 105301431B
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Abstract
A kind of micro- out of circuit test method of high-frequency percussion mainly comprises the following steps and carries out shock-testing to tested each channel of touch panel sensor silver paste route with high-frequency pulse voltage, and automatically switches to next channel and tested.A kind of micro- out of circuit test system of high-frequency percussion, including pulse voltage conversion module, control module and respectively connect with control module power supply module, IO drive module, channel switching module, the pulse voltage conversion module is connect with channel switching module, IO drive module, power supply module respectively, and pulse voltage conversion module is connect with tested each channel of sensor silver paste route.The present invention utilizes pressurization between the transmitting-receiving electrode of capacitive touch screen or between electrode and ground to generate the principle of coupled voltages, high-frequency pulse voltage of the duty ratio less than 1 is applied to port line, it is fully disconnected micro- off position of route by repeated stock, micro- open defect is prevented to be left to next process, and the present invention can carry out shock-testing equipped with multiple channels simultaneously, it is high-efficient.
Description
Technical field
The present invention relates to touch panel sensor testing fields, particularly, are related to a kind of high-frequency percussion of touch panel sensor
Micro- out of circuit test method and test macro.
Background technique
Out of circuit test is very frequent in touch panel sensor testing field, since the silver paste route of touch panel sensor is numerous
More, intensive staggeredly line defct is difficult to check, and generates the hidden danger of open circuit, there are micro- open defects for many routes, i.e., slight is disconnected
Road defect is not measured in preceding one of out of circuit test process, is left to down in the state that disconnect but not be fully disconnected
One procedure even product export when just detected, or factory is fully disconnected needs to return factory, band after a period of use
Carry out unnecessary trouble, currently, micro- out of circuit test mostly deteriorates product circuit using adverse circumstances such as high temperature and humidity, cooling thermal impacts
And detect, the method low efficiency, do not have production, it is accordingly required in particular to which a kind of improvement project makes to detect speed raising, has volume production
Property.Chinese patent 201210377277.7 disclose a kind of channel flexible circuit board touch screen IC it is short/out of circuit test method, the party
Method can only also detect the route being fully disconnected, and for the micro- open defect not being fully disconnected, can not detect.
Summary of the invention
It is an object of that present invention to provide a kind of micro- out of circuit test method of high-frequency percussion and test macros, to solve background technique
The problem of middle proposition.
A kind of micro- out of circuit test method of high-frequency percussion, comprising the following steps:
1) pulse for being connected to pulse generating circuit in each channel of capacitive touch screen sensor silver paste route is defeated
Outlet, rest channels connect the level or ground connection lower than the voltage pulse output of pulse generating circuit；
In step 1, when capacitance touch screen is without the self-tolerant capacitance touch screen of emission electrode and receiving electrode, from appearance
Each silver paste route of formula capacitance touch screen should be grounded relative to the other end of connection pulse generating circuit；
2) the tested touch panel sensor silver paste line channel hair being connect by pulse generating circuit pair with pulse output end
One or more continuous impulse voltages are impacted out, and the pulse generating circuit is logical to tested touch panel sensor silver paste route
The pulse voltage duty ratio that road provides is greater than 0 and less than 1；
3) after a channel impulse is completed, it is switched to next tested channel, by next channel and pulse generation electricity
The pulse output end on road connects, and rest channels connect the level or ground connection lower than the voltage pulse output of pulse generating circuit；It repeats
Step 1, the process of step 2, until all channels are finished by shock-testing.
Further, the pulse generating circuit is equipped with multiple pulse output ends, multiple touch panel sensor silver paste routes
Channel is connected respectively to the pulse output end of pulse generating circuit simultaneously, i.e., has multiple tested channels to receive pulse voltage punching simultaneously
Hit test.
Further, this test method switches over each tested channel using multiplexer circuit, and each touch screen passes
Sensor silver paste line channel is connected respectively to each by selector channel of multiplexer circuit, and the pulse of pulse generating circuit is defeated
Outlet is connected on the selector channel of multiplexer circuit, and multiplexer circuit is in each touch panel sensor silver paste line channel
Middle that a channel is selected to connect as tested channel with pulse generating circuit pulse output end, a tested channel impulse is tested
Bi Hou is switched to next tested channel by multiplexer circuit.
Further, the multiplexer circuit is encoded to all by selector channel in order, to each by selector channel
One unique tetrad coding is provided.
Further, the pulse voltage that the pulse generating circuit provides tested touch panel sensor silver paste line channel
Duty ratio is greater than 0 and less than 1, and pulse frequency is between 0.1KHz~10KHz.
To achieve the above object, the present invention provides a kind of micro- out of circuit test systems of high-frequency percussion, including pulse voltage to turn
Change the mold block, control module and the power supply module connecting respectively with control module, IO drive module, channel switching module, the arteries and veins
Voltage transformation module is rushed respectively with channel switching module, IO drive module, and pulse voltage conversion module, which is equipped with, connects tested pass
The quantity in each channel of sensor silver paste route is greater than or equal to the port A of tested sensor silver paste line channel quantity, is tested
Each channel of sensor silver paste route is connected respectively on each port A of pulse voltage conversion module, the pulse voltage conversion
It is additionally provided in module and is equipped with each port B one by one with the one-to-one port B of each test port A, the channel switching module
The port C for corresponding to and connecting；
The control module includes impulse generating unit, and the output end and channel switching module of impulse generating unit connect
It connects, impulse generating unit provides pulse voltage to channel switching module, and impulse generating unit passes through impulse generating unit and channel
Pulse voltage is gone to channel switching module by the channel D connected between switching module；
The control module includes channel selection unit, and channel switching module separately passes through channel E and channel selection unit
Connection, channel selection unit are encoded by each port C of the channel E to channel switching module, and channel switching module is by coding
Serial number selects 1 port to be connected to channel D in each port C, makes port B corresponding with the port, port A and connects with port A
The tested sensor silver paste line channel connect is successively connected to channel D, and pulse voltage is finally relayed to the corresponding tested biography
On sensor silver paste line channel；
The pulse voltage that the pulse voltage conversion module provides control module is boosted, then by port A to working as
The preceding channel being connected to control module carries out pulse shock；
It is that channel switching module, IO drive module mention that the power supply module, which is that control module powers and pass through control module,
For operating voltage, it is tested that power supply module, which separately passes through relay and is connected on the output end i.e. port A of pulse voltage conversion module,
Channel provides upper pull-up voltage, makes pulse voltage conversion module that action of low-voltage pulse is converted to high-voltage pulse；
The IO drive module is connect with impulse generating unit, and IO drive module separately passes through on connection to relay,
Impulse generating unit controls the switch of relay by IO drive module, turns to be switched on or switched off power supply module for pulse voltage
Change the mold the upper pull-up voltage that block provides.
Further, power supply module be control module power and pass through control module be channel switching module, IO driving mould
It is 4~6V that block, which provides operating voltage, and power supply module is that the upper pull-up voltage that pulse voltage conversion module provides is 18~30V.
Further, the channel switching module separately passes through channel H and connect with IO drive module, and IO drive module is through channel
E is connect with channel selection unit, and channel switching module is connected to channel E by channel H and IO drive module, and channel H is for expanding
The driving capability of channel E is opened up, channel selection unit is successively through channel E, IO drive module, channel H control channel switching module pair
Each port C is encoded.
Further, the IO drive module is separately connected with Subscriber Interface Module SIM, IO drive module and Subscriber Interface Module SIM
Between be separately connected with channel G, communicated between impulse generating unit and Subscriber Interface Module SIM by IO drive module and channel G, use
Family interface module carries out luminous prompting to the working condition of impulse generating unit.
Further, the control module includes delay setting unit, and Subscriber Interface Module SIM includes reset switch, multiple
Bit switch is connect with delay setting unit, and delay setting unit is separately connect with impulse generating unit, and arteries and veins is arranged in delay setting unit
The frequency, duty ratio and single-impact for rushing the provided pulse voltage of generating unit issue the number of pulse.
Further, the channel switching module connecting with control module is divided into multiple independent units, and each port C is in order
It being evenly arranged on each separate unit, each separate unit is respectively equipped with the channel D connecting with impulse generating unit, each
Separate unit is respectively equipped with the channel H for being encoded to each port C connecting with IO drive module, each separate unit
Channel H is corresponding with 1 channel E being connected between channel selection unit and IO drive module.
Further, each separate unit it is respectively arranged connect with IO drive module each port C is encoded
Channel H be it is multiple, multiple channel H of each separate unit corresponding 1 be connected to channel selection unit and IO drive module it
Between channel E.
Further, control module has ISP download function and the interior single-chip microcontroller for having eeprom, eeprom using low cost
Chip can store the pulse number of single sweep operation and the information such as the frequency of pulse voltage and duty ratio, and control module is also connected with can
The serial communication modular communicated with exterior PC.
It is generated the utility model has the advantages that the present invention utilizes to pressurize between the driving electrodes and receiving electrode of mutual capacitance type capacitance touch screen
The principle of coupled voltages, and pressurization generates the principle of coupled voltages between self-tolerant capacitance touch screen electrode and ground, to touching
Touch each port line of screen sensor and apply high-frequency pulse voltage of the duty ratio less than 1, make micro- off position of each line channel because
High-frequency current repeated stock fever fuses and is fully disconnected, and facilitates next process to detect rejected product, prevents micro- open defect
Influence properties of product, reduction is returned factory and is led, and channel switching module is divided into multiple separate units, each separate unit respectively with control
The impulse generating unit of module connects, and makes multiple channels that can carry out shock-testing simultaneously, test speed greatly promotes, testing efficiency
It is high.
Other than objects, features and advantages described above, there are also other objects, features and advantages by the present invention.
Below with reference to figure, the present invention is described in further detail.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the integral module connection figure for the preferred embodiment that medium-high frequency of the present invention impacts micro- out of circuit test system；
Fig. 2 is each port schematic diagram of power supply module U1 in the present invention；
Fig. 3 is each port schematic diagram of control module U2 in the present invention；
Fig. 4-1 is each port schematic diagram of U3 of IO drive module；
Fig. 4-2 is each port schematic diagram of relay U7 of IO drive module；
Fig. 5 is each port schematic diagram of Subscriber Interface Module SIM；
Fig. 6-1 is each port schematic diagram of U14 of channel switching module；
Fig. 6-2 is each port schematic diagram of U15 of channel switching module；
Fig. 6-3 is each port schematic diagram of U16 of channel switching module；
Fig. 6-4 is each port schematic diagram of U17 of channel switching module；
Fig. 6-5 is pull-up resistor NR2, NR3, NR10, NR11 connection schematic diagram of channel switching module；
Fig. 7-1 is each port schematic diagram of U8 of pulse voltage conversion module；
Fig. 7-2 is each port schematic diagram of U9 of pulse voltage conversion module；
Fig. 7-3 is each port schematic diagram of U10 of pulse voltage conversion module；
Fig. 7-4 is each port schematic diagram of U11 of pulse voltage conversion module；
Fig. 7-5 is each port schematic diagram of U12 of pulse voltage conversion module；
Fig. 7-6 is each port schematic diagram of U13 of pulse voltage conversion module；
Fig. 7-7 is each port schematic diagram of U18 of pulse voltage conversion module；
Fig. 7-8 is each port schematic diagram of U19 of pulse voltage conversion module；
Fig. 7-9 is each port schematic diagram of U20 of pulse voltage conversion module；
Fig. 7-10 is each port schematic diagram of U21 of pulse voltage conversion module；
Fig. 7-11 is each port schematic diagram of U22 of pulse voltage conversion module；
Fig. 7-12 is pull-up resistor NR4, NR5 of pulse voltage conversion module, NR6, NR7, NR8, NR9, NR12, NR13,
NR14, NR15, NR16, NR17, NR18, NR19, NR20, NR21 connection schematic diagram；
Fig. 8 is each port schematic diagram of reset switch J2；
Fig. 9 is each port schematic diagram of the external series communication interface J5 of serial communication modular；
Specific embodiment
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be limited according to claim
Fixed and covering multitude of different ways is implemented.
A kind of micro- out of circuit test method of high-frequency percussion, comprising the following steps:
1) pulse for being connected to pulse generating circuit in each channel of capacitive touch screen sensor silver paste route is defeated
Outlet, rest channels ground connection；
In step 1, when capacitance touch screen is without the self-tolerant capacitance touch screen of emission electrode and receiving electrode, from appearance
Other end ground connection of each silver paste route of formula capacitance touch screen relative to connection pulse generating circuit；
2) the tested touch panel sensor silver paste line channel hair being connect by pulse generating circuit pair with pulse output end
Multiple continuous impulse voltages are impacted, and the pulse generating circuit provides tested touch panel sensor silver paste line channel
Pulse voltage duty ratio is equal to 0.5, and pulse frequency is equal to 1KHz；
3) after a channel impulse is completed, it is switched to next tested channel, by next channel and pulse generation electricity
The pulse output end on road connects, rest channels ground connection；Step 1, the process of step 2 are repeated, until all channels are by shock-testing
It finishes.
In the present embodiment, touch panel sensor silver paste route has 64 channels, and pulse generating circuit is equipped with 4 pulse outputs
End, each pulse output end connect a multiplexer circuit, and totally 4 multiplexer circuits, 64 line channels connect in order
Be connected to multiplexer circuit by selector channel, 4 touch panel sensor silver paste line channels are connected respectively to simultaneously every time
4 pulse output ends of pulse generating circuit have 4 tested channels to receive pulse voltage shock-testing simultaneously.
In the present embodiment, test method switches over each tested channel using multiplexer circuit, and each touch screen passes
Sensor silver paste line channel is connected respectively to each by selector channel of multiplexer circuit, and the pulse of pulse generating circuit is defeated
Outlet is connected on the selector channel of multiplexer circuit, and multiplexer circuit is in each touch panel sensor silver paste line channel
Middle that a channel is selected to connect as tested channel with pulse generating circuit pulse output end, a tested channel impulse is tested
Bi Hou is switched to next tested channel by multiplexer circuit.
In the present embodiment, multiplexer circuit is encoded to all by selector channel in order, is mentioned to each by selector channel
For unique 4 binary coding.
In the present embodiment, the channel H that each multiplexer circuit encodes tested channel has 4, H pairs of each channel
Ying Yiwei binary coding, 0000-1111 totally 16 binary codings.I.e. each multiplexer circuit has 16 different volumes
Code, each can represent 16 different tested channels, and pulse generating circuit provides 4 group pulse voltages every time, different by 16
The impact in achievable 64 tested channels after coded sequence poll complete 16 times.
In the present embodiment, the pulse voltage that pulse generating circuit provides tested touch panel sensor silver paste line channel is accounted for
For sky than being equal to 0.5, pulse frequency is equal to 1KHz.
Referring to a kind of micro- out of circuit test system of high-frequency percussion of FIG. 1 to FIG. 9, including pulse voltage conversion module, control mould
Block and the power supply module being connect respectively with control module, IO drive module, channel switching module, the pulse voltage modulus of conversion
For block respectively with channel switching module, IO drive module, pulse voltage conversion module, which is equipped with, connects tested sensor silver paste route
The quantity in each channel is greater than or equal to the port A of tested sensor silver paste line channel quantity, is tested sensor silver paste line
Each channel in road is connected respectively on each port A of pulse voltage conversion module, is additionally provided on the pulse voltage conversion module
With each test port A one-to-one port B, the channel switching module is equipped with and corresponds and connect with each port B
Port C；
Control module includes impulse generating unit, and the output end of impulse generating unit is connect with channel switching module, arteries and veins
It rushes generating unit and provides pulse voltage to channel switching module, impulse generating unit switches mould by impulse generating unit and channel
Pulse voltage is gone to channel switching module by the channel D connected between block；
Control module includes channel selection unit, and channel switching module separately passes through channel E and connect with channel selection unit,
Channel selection unit is encoded by each port C of the channel E to channel switching module, and channel switching module exists by coding serial number
It selects 1 port to be connected to channel D in each port C, makes port B corresponding with the port, port A and the quilt connecting with port A
It surveys sensor silver paste line channel to be successively connected to channel D, pulse voltage is finally relayed to the corresponding tested sensor silver
It starches on line channel；
The pulse voltage that pulse voltage conversion module provides control module is boosted, then by port A to currently with
The channel of control module connection carries out pulse shock；
Power supply module, which powers for control module and passes through control module, provides 5V for channel switching module, IO drive module
Operating voltage, power supply module separately pass through relay U7 and are connected on the output end i.e. port A of pulse voltage conversion module, are tested
Channel provides pull-up voltage on 24V, makes pulse voltage conversion module that 5V action of low-voltage pulse is converted to 24V high-voltage pulse；
IO drive module is connect with impulse generating unit, and IO drive module separately passes through on connection to relay U7, arteries and veins
It rushes generating unit and controls the switch of relay by IO drive module, to be switched on or switched off power supply module for pulse voltage conversion
Pull-up voltage on the 24V that module provides.
Channel switching module separately passes through channel H and connect with IO drive module, and IO drive module is through channel E and channel selecting list
Member connection, channel switching module are connected to channel E by channel H, and channel H is used for the driving capability of extended channel E, channel selecting
Unit successively encodes each port C through channel E, IO driving unit, channel H control channel switching module.
IO drive module is separately connected with Subscriber Interface Module SIM, is separately connected between IO drive module and Subscriber Interface Module SIM logical
Road G is communicated between impulse generating unit and Subscriber Interface Module SIM by IO drive module and channel G, and Subscriber Interface Module SIM is to arteries and veins
The working condition for rushing generating unit carries out luminous prompting.
Control module includes delay setting unit, and Subscriber Interface Module SIM includes reset switch, reset switch and delay
Setting unit connection, delay setting unit are separately connect with impulse generating unit, and impulse generating unit institute is arranged in delay setting unit
The frequency, duty ratio and single-impact for providing pulse voltage issue the number of pulse.
Referring to Fig. 1, the channel switching module connecting with control module is divided into 4 independent units, and each port C is equal in order
For cloth on each separate unit, each separate unit connects 16 tested silver paste line channels, each separate unit point
Not She You 1 channel D being connect with impulse generating unit, channel D totally 4, each separate single being connect with IO drive module
Member is designed with a coding pass E and 4 coding pass H, and coding pass H totally 16, for being encoded to each port C, often
4 coding pass H are arranged in a separate unit, each coding pass H represents a binary coding, so that each separate unit
Four channel H can produce 16 different codings altogether, corresponding 16 tested silver paste line channels, each separate unit corresponding 1
A channel E being connected between channel selection unit and IO drive module, channel E totally 4, IO drive module expands 4 channel E
Exhibition is 16 channel H, enhances the driving capability of control module I/O port.
In the present embodiment, control module has ISP download function and the interior single-chip microcontroller for having eeprom using low cost,
Eeprom chip can store the pulse number of single sweep operation and information, the control module such as the frequency of pulse voltage and duty ratio also connect
It is connected to the serial communication modular that can be communicated with exterior PC.
Referring to fig. 2~Fig. 9, this test macro include:
The power supply module U1:24V power supply adaptor of Fig. 2 passes through J1 input voltage, and SW1 connection power supply is broken as disconnecting electricity
Source is closed to power on, after connection by C4, C5 filter, by U1 stablize reduced output voltage+5V, VDD output-parallel R1 and
Whether LED D1, instruction power supply module power to confirm the electric power thus supplied of control module, are control module, IO drive module, use
Family interface module, pulse voltage conversion module provide working power, and another way provides 24V controller and controlled whether by U3, U7
It opens, upper pull-up voltage is provided for pulse voltage conversion module, to export 24V pulse.
The control module U2: control module U2 of Fig. 3 is master controller, has program control function, including Y1, C8, C9 shake
Circuit is swung, Y1, C8, C9 oscillating circuit provide fixed working frequency for control module；Control module further include SW2, C1, R2,
R3 reset circuit, reset switch SW2 are used for the hand-reset of control module.
IO drive module: the relay U7:U3 of U3 and Fig. 4-2 including Fig. 4-1 improve the load energy of master controller I/O port
Power controls power supply module pulse voltage modulus of conversion by relay U7 to drive Subscriber Interface Module SIM and channel switching module
Pull-up voltage on the 24V that block provides.
The Subscriber Interface Module SIM of Fig. 5: LED D2 can be bright in scanning process, and after the completion of a wheel scan, LED D2 is closed,
LED D3 can the scanning of bright prompt epicycle complete, next wheel scan can be carried out.
Subscriber Interface Module SIM further includes the reset switch J2 of Fig. 8, the port P03 of link control module.
Channel switching module: the U17 and Fig. 6-5 of the U15 of U14, Fig. 6-2, the U16 of Fig. 6-3, Fig. 6-4 including Fig. 6-1
Pull-up resistor NR2, NR3, NR10, NR11, control module U2 is by I/O port P10, P11, P12, P13 through IO drive module to logical
Four separate units U14, U15, U16, U17 of road switching module carry out different codings, and U14, U15, U16, U17 have 4 respectively
A encoder port, respectively P10, P11, P12, P13, the binary coding that control module sends one 4 to each port are believed
Number, P10, P11, P12, P13 can receive 16 different codings altogether, i.e. separate unit U14, U15, U16, U17 can compile 16
Code, control process are simple.Each control module passes through I/O port P20, P21, P22, P23 respectively and produces hair to pulse voltage conversion module
Four groups of 5V pulses can provide pulse source signal to four bullion paddle routes respectively out, can finish 64 channel pollings by 16 times；
Pull-up resistor NR2, NR3, NR10, NR11 are provided by IO drive module, are connected on I/O port P10, P11, P12, P13, and control is increased
The driving capability of module I O mouthfuls of P10, P11, P12, P13.
Pulse voltage conversion module: U11, Fig. 7-5 of the U9 of U8, Fig. 7-2, the U10 of Fig. 7-3, Fig. 7-4 including Fig. 7-1
U12, the U13 of Fig. 7-6, the U18 of Fig. 7-7, the U19 of Fig. 7-8, the U20 of Fig. 7-9, the U21 of Fig. 7-10, Fig. 7-11 U22.
Channel switching module 64 groups of route CH A01~CH A16, CH B01~CH B16, CH C01~CH C16, CH
D01~CH D16 (i.e. port C) be connected to corresponding pulse voltage conversion module chip U8, U9, U10, U11, U12, U13, U18,
U19, U20, U21, U22 input interface CH A01~CH A16, CH B01~CH B16, CH C01~CH C16, CH D01~
On CH D16 (i.e. port B), output interface corresponding with each input interface is respectively CHO A01 on pulse voltage conversion module
(i.e. port A connects each quilt to~CHO A16, CHO B01~CHO B16, CHO C01~CHO C16, CHO D01~CHO D16
Survey silver paste route), the conversion IC of pulse voltage conversion module is open collector, and when output only has low level and two kinds of high-impedance state
State, referring to Fig. 7-12, by output interface CHO A01~CHO A16, the CHO B01~CHO of pulse voltage conversion module
B16, CHO C01~CHO C16, CHO D01~CHO D16 are respectively connected to pull-up voltage on the 24V provided by IO drive module, this
In embodiment, pull-up resistor NR4, NR5, NR6, NR7, NR8, NR9, NR12, NR13, NR14, NR15, NR16, NR17, NR18,
NR19, NR20, NR21 are coupled with output interface CHO A01~CHO A16, the CHO B01~CHO of pulse voltage conversion module
It is corresponding by output voltage clamper in 24V high level state on B16, CHO C01~CHO C16, CHO D01~CHO D16
64 channel 5V pulse signal of channel switching module is promoted respectively to 24V pulse signal.
Fig. 9 be serial communication modular external series communication interface J5, can by serial ports tool for program download or and
Compunlcation, control module pass through the intrinsic Timing driver Subscriber Interface Module SIM of its chip, channel switching module.
Test process of the invention approximately as:
Test process is as follows:
Each port A connection of the pulse voltage conversion module of the micro- disconnected system of this high-frequency percussion is installed into connector, it will
Surveyed each channel of touch screen silver paste route is by patchcord or is directly connected on the connector of the micro- disconnected system of this high-frequency percussion, or
The driving electrodes of silver paste route are shorted respectively with receiving electrode and then each channel is passed through patchcord or is directly connected to connect
On device, after J1 connects 24V power supply adaptor excessively, SW1 power switch is pressed, at this time system electrification, power supply indicator is bright, and instruction is surveyed
Test system power supply is normal, if pressing reset switch J2 before powering on always after system boot, system can enter debugging mode,
According to by switch time length difference, pulse frequency can be set, every group of scanning times are simultaneously stored within controller；
After system electrification, the pulse frequency stored in reading control module delay setting unit first, every group of sweep time,
If storage value is sky, pulse frequency can be set as to 1KHz, every group of sweep time is set as 100 times and stores, control by U2
Device and IO drive module processed makes Subscriber Interface Module SIM init state, and Subscriber Interface Module SIM LED D3 indicator light is bright at this time, LED
D2 indicator light is closed, and expression does not start to pulse scanning, and the 24V for closing pulse voltage conversion module pulls up power voltage supply, will be led to
Road switches the channel 1 for being placed in every IC (U14, U15, U16, U17)；
System is automatically into waiting key triggering state, after being triggered by reset switch J2 key, test mode indicator light
D2 is lighted, and opens simultaneously pull-up voltage on the 24V that power supply module provides for pulse voltage conversion module, and controller passes through I/O port respectively
P20, P21, P22, P23 issue pulse voltage, pass through I/O port P10, P11, P12, P13 control channel switching module by master controller
The coding switching for completing different channels, selecting channel module at this time is 5V pulse, frequency and duty when the attack time by pair
Different silver paste route batch testings selectes optimum value；
It is converted again by pulse voltage conversion module to 24V pulse, after pulse shock is completed, into next channel,
Channel switching is placed in the channel 2 of every IC (U14, U15, U16, U17), until 64 Channel scans finish, termination instruction lamp D3
It lights, indicates that this product is completed；
New product is changed, key triggering is waited, is tested.
This programme only tests product, and scanning is completed to terminate, and makes to be fully disconnected open-circuit line increase
A possibility that, it detected in next short-circuit test station, when the attack time can be to silver paste line for sending pulse frequency and duty
Different degrees of impact is caused on road, and yield selectes optimized parameter after this item data is tested according to bulk article.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of micro- out of circuit test method of high-frequency percussion, which comprises the following steps:
1) one in each channel of capacitive touch screen sensor silver paste route is connected to the pulse output end of pulse generating circuit,
Rest channels connect the level or ground connection lower than the voltage pulse output of pulse generating circuit；
In step 1), when capacitance touch screen is without the self-tolerant capacitance touch screen of emission electrode and receiving electrode, self-tolerant
Other end ground connection of each silver paste route of capacitance touch screen relative to connection pulse generating circuit；The pulse generating circuit is equipped with more
A pulse output end, multiple touch panel sensor silver paste line channels are connected respectively to the pulse output of pulse generating circuit simultaneously
End has multiple tested channels to receive pulse voltage shock-testing simultaneously；
2) 1 is issued by the tested touch panel sensor silver paste line channel that pulse generating circuit pair is connect with pulse output end
Or multiple continuous impulse voltages are impacted, the pulse generating circuit provides tested touch panel sensor silver paste line channel
Pulse voltage duty ratio be greater than 0 and less than 1；Pulse generating circuit is used to apply duty to each port line of touch panel sensor
Than the high-frequency pulse voltage less than 1, keep micro- off position of each line channel complete because of high-frequency current repeated stock fever fusing
It is complete to disconnect, facilitate next process to detect rejected product, prevent micro- open defect from influencing properties of product, pulse frequency is located at
Between 0.1KHz~10KHz；
3) this test method switches over each tested channel using multiplexer circuit, each touch panel sensor silver paste route
Channel is connected respectively to each by selector channel of multiplexer circuit, and the pulse output end of pulse generating circuit is connected to more
On the selector channel of road selection circuit, multiplexer circuit selects one to lead in each touch panel sensor silver paste line channel
Road is connect as tested channel with pulse generating circuit pulse output end, after a channel impulse is completed, by multi-path choice
Circuit is switched to next tested channel, and the pulse output end of next channel and pulse generating circuit is connected, and rest channels connect
The level lower than the voltage pulse output of pulse generating circuit or ground connection；Step 1), the process of step 2) are repeated, until all logical
Road is finished by shock-testing.
2. a kind of micro- out of circuit test system of high-frequency percussion, feature set by test method according to claim 1 exist
In including pulse voltage conversion module, control module and the power supply module, IO drive module, logical that is connect with control module respectively
Road switching module, the pulse voltage conversion module are connect with channel switching module, IO drive module respectively, pulse voltage conversion
Module is equipped with the port A for connecting tested each channel of sensor silver paste route, and the quantity of port A is greater than or equal to tested pass
Sensor silver paste line channel quantity, tested each channel of sensor silver paste route are connected respectively to each of pulse voltage conversion module
On a port A, be additionally provided on the pulse voltage conversion module with the one-to-one port B of each test port A, the channel is cut
Mold changing block is equipped with the port C for corresponding and connecting with each port B；
The control module includes impulse generating unit, and the output end of impulse generating unit is connect with channel switching module, arteries and veins
It rushes generating unit and provides pulse voltage to channel switching module, impulse generating unit switches mould by impulse generating unit and channel
Pulse voltage is gone to channel switching module by the channel D connected between block；
The control module includes channel selection unit, and the channel switching module separately passes through channel H and IO drive module connects
It connects, IO drive module is connect through channel E with channel selection unit, and channel switching module is connected by channel H and IO drive module
It is used for the driving capability of extended channel E to channel E, channel H, channel selection unit to be successively through channel E, IO drive module, channel H
Control channel switching module encodes each port C, and channel switching module selects 1 end by coding serial number in each port C
Mouth is connected to channel D, and the tested sensor silver paste route for making port B corresponding with the port, port A and connecting with port A is logical
Road is successively connected to channel D, and pulse voltage is finally relayed on the corresponding tested sensor silver paste line channel；
The pulse voltage that the pulse voltage conversion module provides control module is boosted, then by port A to currently with
The channel of control module connection carries out pulse shock；
The power supply module, which powers for control module and passes through control module, provides work for channel switching module, IO drive module
Make voltage, power supply module separately passes through relay and is connected on the output end i.e. port A of pulse voltage conversion module, to be tested channel
Pull-up voltage in offer makes pulse voltage conversion module that action of low-voltage pulse is converted to high-voltage pulse；
The IO drive module is connect with impulse generating unit, and IO drive module separately passes through on connection to relay, pulse
Generating unit controls the switch of relay by IO drive module, so that being switched on or switched off power supply module is pulse voltage modulus of conversion
The upper pull-up voltage that block provides.
3. the micro- out of circuit test system of a kind of high-frequency percussion according to claim 2, which is characterized in that the IO drive module
Separately be connected with Subscriber Interface Module SIM, be separately connected with channel G between IO drive module and Subscriber Interface Module SIM, impulse generating unit with
It is communicated between Subscriber Interface Module SIM by IO drive module and channel G, work shape of the Subscriber Interface Module SIM to impulse generating unit
State carries out luminous prompting.
4. the micro- out of circuit test system of a kind of high-frequency percussion according to claim 3, which is characterized in that the control module packet
Delay setting unit is included, Subscriber Interface Module SIM includes reset switch, and reset switch is connect with delay setting unit, and delay is set
Unit is set separately to connect with impulse generating unit, the frequency of delay setting unit setting the provided pulse voltage of impulse generating unit,
Duty ratio and single-impact issue the number of pulse.
5. a kind of micro- out of circuit test system of high-frequency percussion according to any one of claim 2~4, which is characterized in that
The channel switching module connecting with control module is divided into multiple independent units, and each port C is evenly arranged on each in order
On separate unit, each separate unit is respectively equipped with the channel D connecting with impulse generating unit, each separate unit difference
Equipped with the channel H for being encoded to each port C connecting with IO drive module, the channel H of each separate unit is corresponding
There is 1 channel E being connected between channel selection unit and IO drive module.
6. the micro- out of circuit test system of a kind of high-frequency percussion according to claim 5, which is characterized in that each described independence
The respectively arranged channel H that each port C is encoded being connect with IO drive module of unit be it is multiple, each separate unit
The corresponding 1 channel E being connected between channel selection unit and IO drive module of multiple channel H.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879705A (en) * | 2012-10-08 | 2013-01-16 | 江西联创电子有限公司 | IC (integrated circuit) channel short/open circuit test method for flexible circuit board touch screen |
| CN103926497A (en) * | 2013-01-10 | 2014-07-16 | 上海海尔集成电路有限公司 | Test apparatus and method for touch screen module, and touch screen module |
| CN103926496A (en) * | 2013-01-10 | 2014-07-16 | 上海海尔集成电路有限公司 | Test apparatus and method for touch screen module, and touch screen module |
| CN104459400A (en) * | 2014-12-08 | 2015-03-25 | 深圳市华星光电技术有限公司 | Detection circuit and detection method used for self-contained touch screen |
| CN104571718A (en) * | 2015-01-09 | 2015-04-29 | 友达光电股份有限公司 | Touch panel and detection method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101091694B1 (en) * | 2010-01-14 | 2011-12-08 | 마이크로 인스펙션 주식회사 | Inspection apparatus of touch panel |
| CN103969538B (en) * | 2013-01-24 | 2016-11-16 | 上海天马微电子有限公司 | The electric test method of In-cell touch panel |
-
2015
- 2015-11-18 CN CN201510799476.0A patent/CN105301431B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102879705A (en) * | 2012-10-08 | 2013-01-16 | 江西联创电子有限公司 | IC (integrated circuit) channel short/open circuit test method for flexible circuit board touch screen |
| CN103926497A (en) * | 2013-01-10 | 2014-07-16 | 上海海尔集成电路有限公司 | Test apparatus and method for touch screen module, and touch screen module |
| CN103926496A (en) * | 2013-01-10 | 2014-07-16 | 上海海尔集成电路有限公司 | Test apparatus and method for touch screen module, and touch screen module |
| CN104459400A (en) * | 2014-12-08 | 2015-03-25 | 深圳市华星光电技术有限公司 | Detection circuit and detection method used for self-contained touch screen |
| CN104571718A (en) * | 2015-01-09 | 2015-04-29 | 友达光电股份有限公司 | Touch panel and detection method thereof |
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