CN209328485U - A kind of screen tester of automatic identification assembly screen model - Google Patents
A kind of screen tester of automatic identification assembly screen model Download PDFInfo
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- CN209328485U CN209328485U CN201920180630.XU CN201920180630U CN209328485U CN 209328485 U CN209328485 U CN 209328485U CN 201920180630 U CN201920180630 U CN 201920180630U CN 209328485 U CN209328485 U CN 209328485U
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Abstract
The utility model discloses a kind of screen tester of automatic identification assembly screen model, it is characterized in that, it include: screen tester ontology, the type identifier circuit being electrically connected with the screen tester ontology, the model pinboard being electrically connected with the type identifier circuit；The model pinboard includes: screen tester ontology interface, respectively with the screen tester ontology interface be electrically connected assembly screen interface, model memory module；The type identifier circuit and the model memory module are electrically connected；The model memory module is to store IC or the ID identification interface comprising several pins.Due to can directly store the corresponding assembly screen model of this block model pinboard in model memory module, when testing the assembly screen of different model, replace corresponding model pinboard, screen tester ontology obtains the assembly screen model information from model memory module, corresponding test program is called directly to test assembly screen, it is simple and convenient.
Description
Technical field
The utility model relates to screen the field of test technology more particularly to a kind of screens of automatic identification assembly screen model
Tester.
Background technique
Screen display technology is maked rapid progress, and is continued to bring out new technique and is made screen more frivolous, more bright and colourful, more
Add bright thorough.The most crucial human-computer interaction hardware of smart machine is exactly screen, the screen with touch function.Smart machine hair
It opens up to today, almost every smart machine is owned by one piece of assembly screen with touch function.Because of smart machine assembly screen
Potential market is huge, and country also vigorously supports the development of screen manufacturing enterprise.Such as: the huge enterprise of a batch such as BOE, heavenly steed.
Huge screen market also derives the demand of the product of screen test.Outstanding screen manufacturing enterprise is for every a piece of screen
Factory requires just flow to market by strictly testing, so that client possesses best's machine interactive experience.Screen system not to the utmost
It makes enterprise and needs a large amount of screen tester.Screen relevant enterprise requires tester shielding detection, shipment detection etc. and surveys
Try the quality of screen.So demand of the screen industry to screen tester is also huge.
A kind of stage of model can only be tested by also resting on a box mostly for screen tester on the market.For screen
Curtain manufacturing enterprise has continuously model screen and needs production test, and next box of justing think can only test a kind of model screen
Curtain will cause huge economic loss and the wasting of resources.The logical novel test instrument for surveying a variety of assembly screens of tester just quietly comes
Face, also develop can be with the assembly test equipment of a tractor serves several purposes for compliance requirements for our company.The assembly test of a tractor serves several purposes is set on the market
It is standby all also to rest on query code table, after finding the corresponding coding of assembly screen to be measured, screen tester ontology is inputed to, is tested
Instrument automatically switches the program of test according to coding.This method tabled look-up manually has following drawback.
First point: the switching of tester program is complicated, and it is mostly excessively cumbersome to be manually entered numbering step, and it is extensive to be unfavorable for enterprise
Production test assembly screen.
Second point: procedure operation complexity is easy to switch to the test program of mistake to test assembly screen, causes irreversible
Bulk problem.
Thirdly: screen test equipment enterprise needs costly energy to carry out the update of real-time servicing coding schedule and mention
For a large amount of manpowers go processing user because will not changeover program consulting and customer complaint.
Therefore, the prior art is defective, needs to improve.
Utility model content
Technical problem to be solved by the utility model is: providing a kind of screen test of automatic identification assembly screen model
Instrument simplifies the step of enterprise replaces program, does not need cumbersome lookup coding schedule manual switching number again and carrys out changeover program, leads to
Replacement model pinboard is crossed to realize the switching of different screen test program.Client is avoided because selecting miscoding to lead to screen
Production problem, while being greatly reduced maintenance of the equipment manufacturing enterprise to equipment, after cost.
The technical solution of the utility model is as follows: providing a kind of screen tester of automatic identification assembly screen model, wraps
It includes: screen tester ontology, the type identifier circuit being electrically connected with the screen tester ontology, with the type identifier electricity
The model pinboard that road is electrically connected；The model pinboard includes: screen tester ontology interface, is surveyed respectively with the screen
Try assembly screen interface, the model memory module that instrument ontology interface is electrically connected；The type identifier circuit is deposited with the model
Module is stored up to be electrically connected；The type identifier circuit includes: singlechip chip, is electrically connected respectively with the singlechip chip
Serial communication interface, download interface；The singlechip chip is electrical with the screen tester ontology, model memory module respectively
Connection；The singlechip chip is electrically connected by the serial communication interface and screen tester ontology, the model storage
Module is to store IC or the ID identification interface comprising several pins.The switching of this block model can be directly stored in model memory module
The corresponding assembly screen model of plate, when testing the assembly screen of different model, it is only necessary to replace corresponding model pinboard, shield
Assembly screen model information in curtain tester ontology acquisition model memory module, calls directly corresponding test program to assembly
Screen is tested, simple and convenient.The model of assembly screen can be directly stored in storage IC.For the ID comprising several pins
Identify that interface, the pin that singlechip chip is connect with ID identification interface have pull-up, drop-down, hanging three kinds of states, identifies to ID
Different states is arranged in several pins of interface, can realize and encode to assembly screen model, and singlechip chip is logical
The state for obtaining the pin of ID identification interface is crossed, to obtain the model of the corresponding assembly screen of the model pinboard.By model
Pinboard and screen tester ontology are electrically connected, and screen tester ontology can obtain the corresponding assembly of model pinboard
Screen model, after assembly screen is connect with model pinboard, screen tester ontology can call directly corresponding test journey
Ordered pair assembly screen is tested.
Further, the model memory module is that ID identifies that interface, the pin of the ID identification interface pass through ESD electrostatic
Protection chip is connect with singlechip chip；The type identifier circuit is arranged in the screen tester ontology or model pinboard
On.
Further, the screen tester ontology includes: master control IC, is electrically connected respectively with the master control IC adjustable
Voltage follower circuit, FPGA, dimmable backlights output circuit, IIC circuit, the SD-RAM storage core being connect respectively with the FPGA
Piece, EMMC storage chip, SSD2828 bridging chip, respectively with the adjustable voltage output circuit, SSD2828 bridging chip, can
Adjust the MIPI interface of backlight output circuit, IIC circuit connection；The MIPI interface by model pinboard respectively with assembly screen
Touch IC, display driving IC connection；The SD-RAM storage chip is stored with RGB data；The EMMC storage chip storage
Image data.The master control IC is for adjusting adjustable voltage output circuit, dimmable backlights output circuit, IIC circuit and FPGA
Operation；The SD-RAM storage chip is for storing RGB data, and the EMMC storage chip is for storing image data, institute
FPGA is stated mainly for the treatment of image data.Adjustable voltage output circuit has 6 road 0V~10V, and what maximum 300mA electric current exported can
Adjust forward voltage and 1 tunnel -10V~adjustable negative voltage of 0V.SSD2828 bridging chip is used for Initial R GB picture signal
It is converted into MIPI signal.Dimmable backlights output circuit, it has the characteristics that, and backlight voltage is adjustable, backlight constant current.IIC circuit is
The voltages such as VDD, VIO, SDA, SCL, INT, TP_RST of IC are touched for programmed configurations, make integrated burning and test assembly screen
Device can program and change above-mentioned pin voltage and required with adapting to different touchs IC.
Further, model pinboard is connect with screen tester ontology, assembly screen to be measured and model pinboard connect
It connects, the MIPI interface of assembly screen to be measured can be connected to MIPI interface by model pinboard, and then master control IC transmission refers to
Enable initialization FPGA, EMMC storage chip, SD-RAM storage chip, SSD2828 bridging chip.After the completion of initialization, master control IC
Send the binary system image data inside instruction calling EMMC storage chip.Binary system image data is converted into RGB letter by FPGA
Number.Rgb signal is converted into MIPI format picture signal by SSD2828 bridging chip, and MIPI format picture signal sends assembly to
After screen display driving IC, display driving IC is shown to the image data of MIPI format on assembly screen, so far assembly screen
It can show graphic image.Then whether the id information of system readback assembly screen display driving IC judges screen burning
It shows driving data, burning operation is carried out if without burning, is carried out if display driving data is crossed in burning next
Step operation.The information such as the firmware version of touch IC of assembly screen are read, judge to touch whether IC has had burning to cross touch money
Material, burning touches data if crossing touch data without burning, carries out next step operation if burning touches data.
Switch into the pictures automatic or manual such as picture red, green, blue, black, white, grey, coloured picture.After selection needs to carry out touching test,
System enters autotest program, and automatic test includes the parameters such as short circuit, open circuit, capacitance.Above-mentioned parameter numerical value and standard assembly
The comparison of shipment numerical value, the PASS if within its scope if not within its scope with regard to NG, and generate the storage of LOG file to setting
It is standby.4 processes of assembly screen production test are all put into an equipment by the integrated burning and the device for testing assembly screen,
The high cost but also efficient production test assembly screen of other equipment can be saved.In addition, being unloaded due to eliminating button repeatedly
The reason of assembly screen stand, it also will be greatly reduced the risk of assembly screen stand damage, assembly screen produces yields also phase
It should improve.
Further, the adjustable voltage output circuit includes: voltage stabilizing chip, the first fixed value resistance, variable resistance module；
The input terminal and first voltage input terminal of the voltage stabilizing chip are electrically connected, and the output end of the voltage stabilizing chip connects with the first output
Mouth is electrically connected, and the ground terminal of the voltage stabilizing chip and the variable resistance module are electrically connected, and the variable resistance module connects
Ground, the both ends of first fixed value resistance are electrically connected with the ground terminal of voltage stabilizing chip, output end respectively；First output connects
Mouth is electrically connected with MIPI interface；The variable resistance module includes: the second fixed value resistance, first voltage comparator, the second electricity
Press comparator, the first divider resistance, the second divider resistance, third divider resistance, the 4th divider resistance, the first current-limiting resistance；Institute
The both ends for stating the first divider resistance are electrically connected with the positive input terminal of master control IC, first voltage comparator respectively；Described second point
The both ends of piezoresistance are connect with the positive input terminal on ground, first voltage comparator respectively；The negative input of the first voltage comparator
End and the output end of first voltage comparator are electrically connected；The both ends of the current-limiting resistance respectively with master control IC, second voltage ratio
Positive input terminal compared with device is electrically connected, the both ends of the third divider resistance respectively with the output end of first voltage comparator, the
The negative output terminal of two voltage comparators connects；The both ends of 4th divider resistance negative input with second voltage comparator respectively
The output end electric connection at end, second voltage comparator；The both ends of second fixed value resistance respectively with second voltage comparator
Output end, voltage stabilizing chip ground terminal be electrically connected.
Further, the adjustable voltage output circuit further include: the output end and first of the voltage stabilizing chip is set
Metal-oxide-semiconductor between output interface, the triode with metal-oxide-semiconductor electric connection；The pole G of the metal-oxide-semiconductor, the pole D, the pole S respectively with
The output end electric connection of the collector of triode, the first output interface, voltage stabilizing chip；The base stage of the triode and the master
It controls IC to be electrically connected, the emitter ground connection of the triode.
Further, the dimmable backlights output circuit includes: second voltage input terminal, XL6009 chip, tertiary voltage
Comparator, the 5th divider resistance, the 6th divider resistance；The end VIN of the XL6009 chip and the second voltage input terminal connect
It connects；The positive input terminal and master control IC of the tertiary voltage comparator are electrically connected, the negative input end of the tertiary voltage comparator
It is electrically connected with the output end of the tertiary voltage comparator；The both ends of 5th divider resistance are divided with tertiary voltage respectively
The output end of device, the end FB of XL6009 chip are electrically connected；The both ends of 6th divider resistance respectively with XL6009 chip
The end FB, the connection of the second output interface, second output interface and MIPI interface are electrically connected.
Further, the first voltage comparator, second voltage comparator model be LM358.
Further, the metal-oxide-semiconductor is P-channel metal-oxide-semiconductor, and the triode is NPN type triode, the voltage stabilizing chip
Model LM317.
Further, the model LM358 of the tertiary voltage comparator.
Further, the master control IC uses the STM32F746 processor based on ARM32-bit Cortex-M7, described
FPGA is based on ARM kernel, the model STM32F103C8T6 of the singlechip chip.
Using the above scheme, the utility model provides a kind of screen tester of automatic identification assembly screen model, due to
The corresponding assembly screen model of this block model pinboard can be directly stored in model memory module, when test different model it is total
When at screen, it is only necessary to replace corresponding model pinboard, screen tester ontology obtains the assembly screen from model memory module
Curtain type information, calls directly corresponding test program and tests assembly screen, simple and convenient.
Detailed description of the invention
Fig. 1 is the functional block diagram of an embodiment of the present invention；
Fig. 2 is the connection schematic diagram of Fig. 1 embodiment and assembly screen；
Fig. 3 is that the ID of the model pinboard of Fig. 1 embodiment identifies the circuit diagram of interface；
Fig. 4 is the circuit diagram of type identifier circuit；
Fig. 5 is the structural schematic diagram of model pinboard；
Fig. 6 is the circuit diagram of the adjustable voltage output circuit of the utility model；
Fig. 7 is the circuit diagram of the dimmable backlights output circuit of the utility model；
Fig. 8 is the circuit diagram of the IIC of the utility model；
Fig. 9 is the connection schematic diagram of the utility model another embodiment and assembly screen；
Figure 10 is the connection schematic diagram of another embodiment of the utility model and assembly screen.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Fig. 1-Fig. 8 is please referred to, the utility model provides a kind of screen tester of automatic identification assembly screen model, packet
It includes: screen tester ontology 70, the type identifier circuit 80 being electrically connected with the screen tester ontology 70, with the model
The model pinboard 90 that identification circuit 80 is electrically connected；The model pinboard 90 includes: screen tester ontology interface 91, point
Not with the screen tester ontology interface 91 be electrically connected assembly screen interface 92, model memory module；The model is known
Other circuit 80 is electrically connected with the model memory module；The type identifier circuit 80 includes: singlechip chip 81, respectively with
The serial communication interface 82 of the electric connection of singlechip chip 81, download interface 83；The singlechip chip 81 respectively with institute
State screen tester ontology 70, model memory module is electrically connected；The singlechip chip 81 passes through the serial communication interface
82 are electrically connected with screen tester ontology 70, and the model memory module is that the ID comprising several pins identifies interface 93.Type
The corresponding assembly screen model of this block model pinboard 90 can be directly stored in number memory module, it is total when test different model
When at screen, it is only necessary to replace corresponding model pinboard 90, screen tester ontology 70 obtains total in model memory module
At screen model information, calls directly corresponding test program and assembly screen is tested, it is simple and convenient.For comprising several
The ID of pin identifies that interface 93, the pin that singlechip chip 81 is connect with ID identification interface 93 have pull-up, pull down, three kinds hanging
State is arranged different states to 93 several pins of ID identification interface, can realize and compile to assembly screen model
Code, the state that singlechip chip 81 identifies the pin of interface 93 by obtaining ID, so that it is corresponding to obtain the model pinboard 90
The model of assembly screen.Model pinboard 90 and screen tester ontology 70 are electrically connected, screen tester ontology 70
To obtain the corresponding assembly screen model of model pinboard 90, after assembly screen is connect with model pinboard 90, screen test
Instrument ontology 70 can call directly corresponding test program and test assembly screen.
It is 0, ID hole location hanging shape that the pin pull-up state of pre-defined ID identification interface 93, which is 1, ID hole location pull-down state,
State is 2.In your the present embodiment, ID identifies that the pin in interface 93 for ID identification is 8,8 hole locations of ID hole location 1~8
Respectively hanging, pull-up, drop-down, hanging, pull-up, drop-down, hanging, pull-up.We are easy to obtain a string of 3 systems according to definition
Number 21021021, and the automatic discrimination module of platelet is to obtain 01001001 this string number by first pulling down 8 ID pins, then is pulled up
After 8 ID feet obtain data 11011011, exclusive or is carried out to above-mentioned two string data and obtains 10010010.And 10010010x2+
01001001=21021021, and after 3 are converted into 10 system numbers into number 21021021, screen is transmitted to by serial communication interface 82
The specific coding of model pinboard can be obtained in curtain tester ontology.Phase is switched to automatically after screen tester ontology acquisition to coding
The purpose of automatic identification model pinboard and changeover program can be realized in the program answered.
The pin of the ID identification interface 93 is connect by ESD electrostatic protection chip 94 with singlechip chip 81；The type
Number identification circuit 80 is arranged on model pinboard 90.
The screen tester ontology includes: master control IC10, the adjustable voltage being electrically connected respectively with the master control IC10
Output circuit 20, FPGA30, dimmable backlights output circuit 40, IIC circuit 50 are deposited with the FPGA30 SD-RAM connecting respectively
Store up chip 31, EMMC storage chip 32, SSD2828 bridging chip 33, respectively with the adjustable voltage output circuit 20,
The MIPI interface 60 that SSD2828 bridging chip 33, dimmable backlights output circuit 40, IIC circuit 50 connect；The MIPI interface 60
It is connect respectively with the touch IC71 of assembly screen, display driving IC72 by model pinboard 90；The SD-RAM storage chip
31 are stored with RGB data；The EMMC storage chip 32 stores image data.The master control IC10 is defeated for adjusting adjustable voltage
The operation of circuit 20, dimmable backlights output circuit 40, IIC circuit 50 and FPGA30 out；The SD-RAM storage chip 31 is used
In storage RGB data, the EMMC storage chip 32 is for storing image data, and the FPGA30 is mainly for the treatment of picture number
According to.Adjustable voltage output circuit 20 has 6 road 0V~10V, the adjustable forward voltage and 1 tunnel -10V of maximum 300mA electric current output
The adjustable negative voltage of~0V.SSD2828 bridging chip 33 is used to Initial R GB picture signal be converted into MIPI signal.It is adjustable
Backlight output circuit 40, it has the characteristics that, and backlight voltage is adjustable, backlight constant current.IIC circuit 50 is touched for programmed configurations
The voltages such as VDD, VIO, SDA, SCL, INT, TP_RST of IC71 are touched, integrated burning and the device of test assembly screen are compiled
Journey changes above-mentioned pin voltage to adapt to different touch IC71 requirements.
Model pinboard 90 is connect with screen tester ontology 70, assembly screen to be measured is connect with model pinboard 90,
The MIPI interface of assembly screen to be measured can be connected to MIPI interface 60 by model pinboard 90, and then master control IC10 is sent
Instruction initialization FPGA30, EMMC storage chip 32, SD-RAM storage chip 31, SSD2828 bridging chip 33.Initialization is completed
Afterwards, master control IC10 sends the binary system image data that 32 the inside of EMMC storage chip is called in instruction.FPGA30 is binary system picture
Data conversion is at rgb signal.Rgb signal is converted into MIPI format picture signal, MIPI format chart by SSD2828 bridging chip 33
After piece signal sends assembly screen display driving IC72 to, the image data of MIPI format is shown to assembly by display driving IC72
On screen, so far assembly screen can show graphic image.Then the id information of system readback assembly screen display driving IC72
Judge that whether display driving data is crossed in burning to screen, carries out burning operation, if burning if without burning
Display driving data then carries out next step operation.The information such as the firmware version of touch IC71 of assembly screen are read, judge to touch
Whether IC71 has had burning to cross touch data, and burning touches data if crossing touch data without burning, if burnt
Record touch data then carries out next step operation.It is cut into the pictures automatic or manual such as picture red, green, blue, black, white, grey, coloured picture
It changes.After selection needs to carry out touching test, system enters autotest program, and automatic test includes short circuit, open circuit, capacitance etc.
Parameter.Above-mentioned parameter numerical value and standard assembly shipment numerical value compare, the PASS if within its scope, if not within its scope
With regard to NG, and the storage of LOG file is generated to equipment.The device of the integrated burning and test assembly screen, which produces assembly screen, to be surveyed
4 processes of examination all put an equipment into, can save the high cost but also efficient production test assembly screen of other equipment
Curtain.In addition, eliminate repeatedly button unload assembly screen stand due to, also will be greatly reduced assembly screen stand damage wind
Danger, assembly screen production yields also correspondingly increase.
The adjustable voltage output circuit 20 includes: voltage stabilizing chip 21, the first fixed value resistance 22, variable resistance module；Institute
The input terminal and first voltage input interface 23 for stating voltage stabilizing chip 20 are electrically connected, the output end and first of the voltage stabilizing chip 20
Output interface 24 is electrically connected, and the ground terminal of the voltage stabilizing chip 21 and the variable resistance module are electrically connected, described variable
Resistive module ground connection, the both ends of first fixed value resistance 22 respectively with the ground terminal of voltage stabilizing chip 21, voltage stabilizing chip 21 it is defeated
Outlet is electrically connected；First output interface 24 is electrically connected with MIPI interface 60.Voltage passes through first voltage input interface
23 are input to the input terminal of voltage stabilizing chip 21, by changing the resistance of variable resistance module, the output end of voltage stabilizing chip 21
To export different voltage.
The variable resistance module includes: the second fixed value resistance 25, first voltage comparator 26, second voltage comparator
27, the first divider resistance 28, the second divider resistance 29, third divider resistance 34, the 4th divider resistance 35, current-limiting resistance 36；Institute
The both ends for stating the first divider resistance 28 are electrically connected with the positive input terminal of master control IC10, first voltage comparator 26 respectively；It is described
The both ends of second divider resistance 29 are connect with the positive input terminal on ground, first voltage comparator 26 respectively；The first voltage compares
The negative input end of device 26 and the output end of first voltage comparator 26 are electrically connected；The both ends of the current-limiting resistance 36 respectively with master
Control IC10, the positive input terminal of second voltage comparator 27 is electrically connected, the both ends of the third divider resistance 34 are respectively with first
The negative output terminal connection of the output end, second voltage comparator 27 of voltage comparator 26；The both ends of 4th divider resistance 35
It is electrically connected respectively with the output end of the negative input end of second voltage comparator 27, second voltage comparator 27；Described second is fixed
The both ends for being worth resistance 25 are electrically connected with the ground terminal of the output end of second voltage comparator 27, voltage stabilizing chip 20 respectively.Master control
The signal that IC10 sends out different to first voltage comparator 26, second voltage comparator 27, to change the resistance of variable resistance module
Value, to realize control of the master control IC10 to 20 output voltage of adjustable voltage output circuit.
In the present embodiment, the first voltage comparator 26, second voltage comparator 27 model be LM358.
The adjustable voltage output circuit 20 further include: the output end and the first output that the voltage stabilizing chip 21 is arranged in connect
Metal-oxide-semiconductor 37 between mouth 24, the triode 38 with the metal-oxide-semiconductor 37 electric connection；The pole G, the pole D, the pole S point of the metal-oxide-semiconductor 37
It is not electrically connected with the output end of the collector of triode 38, the first output interface, voltage stabilizing chip 21；The base of the triode 38
Pole and the master control IC10 are electrically connected, the emitter ground connection of the triode 38.Master control IC10 controls the on-off of triode 38,
To realize the on-off between the output end of voltage stabilizing chip 21 and the first output interface 24, to realize control adjustable voltage output
The output of circuit 20.
The metal-oxide-semiconductor 37 is P-channel metal-oxide-semiconductor, and the triode 38 is NPN type triode, the type of the voltage stabilizing chip 21
Number be LM317.
The dimmable backlights output circuit 40 includes: second voltage input interface 41, XL6009 chip 42, tertiary voltage ratio
Compared with device 43, the 5th divider resistance 44, the 6th divider resistance 45；The end VIN of the XL6009 chip 42 and the second voltage are defeated
Incoming interface 41 connects；The positive input terminal and master control IC10 of the tertiary voltage comparator 43 are electrically connected, the tertiary voltage ratio
It is electrically connected compared with the output end of the negative input end of device 43 and the tertiary voltage comparator 43；The two of 5th divider resistance 44
End is electrically connected with the end FB of the output end of tertiary voltage divider 43, XL6009 chip 42 respectively；6th divider resistance
45 both ends are connect with the end FB of XL6009 chip 42, the second output interface 46 respectively, second output interface 46 and MIPI
Interface 60 is electrically connected.Master control IC10 realizes that control exports dimmable backlights by outputing signal to tertiary voltage comparator 43
The output of circuit 40.
In the present embodiment, the model LM358 of the tertiary voltage comparator 43.The EMMC storage chip 32 is also deposited
Contain test result.The master control IC10 uses the STM32F746 processor based on ARM32-bit Cortex-M7, described
FPGA30 is based on ARM kernel.
Embodiment 2
Referring to Fig. 9, the utility model provides a kind of screen tester of automatic identification assembly screen model, comprising: screen
Curtain tester ontology 70, the type identifier circuit 80 being electrically connected with the screen tester ontology 70, with the type identifier
The electrical model pinboard 90 of circuit 80；The model pinboard 90 include: screen tester ontology interface 91, respectively with the screen
The assembly screen interface 92 that curtain tester ontology interface 91 is electrically connected, model memory module；The type identifier circuit 80 with
The model memory module is electrically connected；The type identifier circuit 80 includes: singlechip chip 81, respectively with the single-chip microcontroller
The serial communication interface 82 of the electric connection of chip 81, download interface 83；The singlechip chip 81 is tested with the screen respectively
Instrument ontology 70, model memory module are electrically connected；The singlechip chip 81 is surveyed by the serial communication interface 82 with screen
It tries instrument ontology 70 to be electrically connected, the model memory module is that the ID comprising several pins identifies interface 93.
The pin of the ID identification interface 93 is connect by ESD electrostatic protection chip 94 with singlechip chip 81；The type
Number identification circuit 80 is arranged on the screen tester ontology 70.
Embodiment 3
Referring to Fig. 10, the utility model provides a kind of screen tester of automatic identification assembly screen model, comprising: screen
Curtain tester ontology 70, the type identifier circuit 80 being electrically connected with the screen tester ontology 70, with the type identifier
The electrical model pinboard 90 of circuit 80；The model pinboard 90 include: screen tester ontology interface 91, respectively with the screen
The assembly screen interface 92 that curtain tester ontology interface 91 is electrically connected, model memory module；The type identifier circuit 80 with
The model memory module is electrically connected；The type identifier circuit 80 includes: singlechip chip 81, respectively with the single-chip microcontroller
The serial communication interface 82 of the electric connection of chip 81, download interface 83；The singlechip chip 81 is tested with the screen respectively
Instrument ontology 70, model memory module are electrically connected；The singlechip chip 81 is surveyed by the serial communication interface 82 with screen
It tries instrument ontology 70 to be electrically connected, the model memory module is storage IC95.The setting of type identifier circuit 80 turns in model
On fishplate bar 90.
In conclusion the utility model provides a kind of screen tester of automatic identification assembly screen model, due to model
The corresponding assembly screen model of this block model pinboard can be directly stored in memory module, when the assembly screen of test different model
When curtain, it is only necessary to replace corresponding model pinboard, screen tester ontology obtains the assembly screen type from model memory module
Number information, calls directly corresponding test program and tests assembly screen, simple and convenient.
The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all practical at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the guarantor of the utility model within novel spirit and principle
Within the scope of shield.
Claims (10)
1. a kind of screen tester of automatic identification assembly screen model characterized by comprising screen tester ontology, with
The type identifier circuit that the screen tester ontology is electrically connected is transferred with the model that the type identifier circuit is electrically connected
Plate；The model pinboard includes: screen tester ontology interface, is electrically connected respectively with the screen tester ontology interface
Assembly screen interface, model memory module；The type identifier circuit and the model memory module are electrically connected；The type
Number identification circuit includes: singlechip chip, and the serial communication interface that is electrically connected respectively with the singlechip chip, downloading connect
Mouthful；The singlechip chip is electrically connected with the screen tester ontology, model memory module respectively；The singlechip chip
Be electrically connected by the serial communication interface and screen tester ontology, if the model memory module be storage IC or comprising
The ID of dry pin identifies interface.
2. a kind of screen tester of automatic identification assembly screen model according to claim 1, which is characterized in that described
Model memory module is that ID identifies that interface, the pin of the ID identification interface pass through ESD electrostatic protection chip and singlechip chip
Connection；The type identifier circuit is arranged on the screen tester ontology or model pinboard.
3. a kind of screen tester of automatic identification assembly screen model according to claim 1, which is characterized in that described
Screen tester ontology includes: master control IC, respectively with the master control IC be electrically connected adjustable voltage output circuit, FPGA, can
Adjust backlight output circuit, IIC circuit, the SD-RAM storage chip being connect respectively with the FPGA, EMMC storage chip,
SSD2828 bridging chip, respectively with the adjustable voltage output circuit, SSD2828 bridging chip, dimmable backlights output circuit,
The MIPI interface of IIC circuit connection；The MIPI interface is driven with the touch IC of assembly screen, display respectively by model pinboard
Dynamic IC connection.
4. a kind of screen tester of automatic identification assembly screen model according to claim 3, which is characterized in that described
Adjustable voltage output circuit includes: voltage stabilizing chip, the first fixed value resistance, variable resistance module；The input terminal of the voltage stabilizing chip
It is electrically connected with first voltage input terminal, the output end of the voltage stabilizing chip and the first output interface are electrically connected, the pressure stabilizing
The ground terminal of chip and the variable resistance module are electrically connected, the variable resistance module ground, first fixed value resistance
Both ends respectively with the ground terminal of voltage stabilizing chip, output end be electrically connected；First output interface electrically connects with MIPI interface
It connects；The variable resistance module includes: the second fixed value resistance, first voltage comparator, second voltage comparator, the first partial pressure electricity
Resistance, the second divider resistance, third divider resistance, the 4th divider resistance, the first current-limiting resistance；The both ends of first divider resistance
It is electrically connected respectively with the positive input terminal of master control IC, first voltage comparator；The both ends of second divider resistance respectively with ground,
The positive input terminal of first voltage comparator connects；The negative input end of the first voltage comparator is defeated with first voltage comparator
Outlet is electrically connected；The both ends of the current-limiting resistance are electrically connected with the positive input terminal of master control IC, second voltage comparator respectively,
The both ends of the third divider resistance connect with the negative output terminal of the output end of first voltage comparator, second voltage comparator respectively
It connects；The both ends output with the negative input end of second voltage comparator, second voltage comparator respectively of 4th divider resistance
End is electrically connected；The both ends of second fixed value resistance ground connection with the output end of second voltage comparator, voltage stabilizing chip respectively
End is electrically connected.
5. a kind of screen tester of automatic identification assembly screen model according to claim 4, which is characterized in that described
Adjustable voltage output circuit further include: be arranged in metal-oxide-semiconductor between the output end of the voltage stabilizing chip and the first output interface, with
The triode that the metal-oxide-semiconductor is electrically connected；The pole G, the pole D, the pole S of the metal-oxide-semiconductor are exported with the collector of triode, first respectively
The output end electric connection of interface, voltage stabilizing chip；The base stage of the triode and the master control IC are electrically connected, the triode
Emitter ground connection.
6. a kind of screen tester of automatic identification assembly screen model according to claim 3, which is characterized in that described
Dimmable backlights output circuit includes: second voltage input terminal, XL6009 chip, tertiary voltage comparator, the 5th divider resistance,
Six divider resistances；The end VIN of the XL6009 chip is connect with the second voltage input terminal；The tertiary voltage comparator
Positive input terminal and master control IC are electrically connected, and the negative input end of the tertiary voltage comparator is defeated with the tertiary voltage comparator
Outlet is electrically connected；The both ends of 5th divider resistance respectively with the output end of tertiary voltage divider, XL6009 chip
The end FB is electrically connected；The both ends of 6th divider resistance are connect with the end FB of XL6009 chip, the second output interface respectively, institute
It states the second output interface and MIPI interface is electrically connected.
7. a kind of screen tester of automatic identification assembly screen model according to claim 4, which is characterized in that described
First voltage comparator, second voltage comparator model be LM358.
8. a kind of screen tester of automatic identification assembly screen model according to claim 5, which is characterized in that described
Metal-oxide-semiconductor is P-channel metal-oxide-semiconductor, and the triode is NPN type triode, the model LM317 of the voltage stabilizing chip.
9. a kind of screen tester of automatic identification assembly screen model according to claim 6, which is characterized in that described
The model LM358 of tertiary voltage comparator.
10. a kind of screen tester of automatic identification assembly screen model according to claim 3, which is characterized in that institute
Master control IC is stated using the STM32F746 processor based on ARM32-bit Cortex-M7, the FPGA is based on ARM kernel, described
The model STM32F103C8T6 of singlechip chip.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112349229A (en) * | 2020-10-27 | 2021-02-09 | 京东方科技集团股份有限公司 | Display screen lighting machine and display screen detection device |
| CN114739543A (en) * | 2022-04-21 | 2022-07-12 | 深圳国微感知技术有限公司 | Adaptive identification system for pressure distribution measurement |
| CN117975841A (en) * | 2024-03-28 | 2024-05-03 | 广东匠芯创科技有限公司 | Screen test method and storage medium |
-
2019
- 2019-01-31 CN CN201920180630.XU patent/CN209328485U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112349229A (en) * | 2020-10-27 | 2021-02-09 | 京东方科技集团股份有限公司 | Display screen lighting machine and display screen detection device |
| US11587480B2 (en) | 2020-10-27 | 2023-02-21 | Ordos Yuansheng Optoelectronics Co., Ltd. | Display screen lighter and display screen detection device |
| CN112349229B (en) * | 2020-10-27 | 2023-08-08 | 京东方科技集团股份有限公司 | Display screen lighting machine and display screen detection device |
| CN114739543A (en) * | 2022-04-21 | 2022-07-12 | 深圳国微感知技术有限公司 | Adaptive identification system for pressure distribution measurement |
| CN117975841A (en) * | 2024-03-28 | 2024-05-03 | 广东匠芯创科技有限公司 | Screen test method and storage medium |
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