CN107941465A - Display module test method and device - Google Patents
Display module test method and device Download PDFInfo
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- CN107941465A CN107941465A CN201711115393.0A CN201711115393A CN107941465A CN 107941465 A CN107941465 A CN 107941465A CN 201711115393 A CN201711115393 A CN 201711115393A CN 107941465 A CN107941465 A CN 107941465A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
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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
Abstract
The embodiment of the invention discloses a kind of display module to test system and method, which includes：UI administrative units obtain the initiation parameter and FPGA unit initiation parameter of display module to be measured.The initiation parameter of the above-mentioned display module to be measured of main control unit determines the driving voltage size needed for display module to be measured, and controls power supply unit to provide the driving voltage corresponding to driving voltage size for display module to be measured to enable display module to be measured.Main control unit initializes FPGA unit according to above-mentioned FPGA unit initiation parameter.FPGA unit obtains test image, and test image is exported to display module to be measured.Optical detection unit detects optical performance parameter of the display module to be measured when showing test image.Main control unit determines the performance state of display module to be measured by above-mentioned optical performance parameter.The flexibility that the system can increase the diversity of display module test system and test function and use, improves the testing efficiency of display module.
Description
Technical field
The present invention relates to electronic technology field, more particularly to a kind of display module test method and device.
Background technology
With the continuous development of Display Technique, the application of display module is more and more extensive, especially in small sizes such as mobile phones
Electronic equipment on demand it is increasing.Therefore, the requirement for the optical characteristics of display module is also higher and higher, this is same
When also improve requirement to display module test platform.
At present, the production capacity of display module improves year by year, but the test of display module generally uses in the prior art
The mode of artificial detection, and often the display module performance parameter of single test only has one kind.In the prior art, display module
Detection method function it is single, inconvenient, the testing efficiency of display module is low.
The content of the invention
An embodiment of the present invention provides a kind of display module to test system and method, can increase display module test system
The diversity of test function and the flexibility used, improve the testing efficiency of display module.
First aspect provides a kind of display module test system, it may include：Main control unit, field programmable gate array
FPGA unit, display module to be measured, power supply unit, user interface UI administrative units and optical detection unit；
One end of above-mentioned main control unit is connected with one end of above-mentioned UI administrative units, the other end of UI administrative units with it is upper
The one end for stating optical detection unit is connected.The other end of above-mentioned optical detection unit and one end phase of above-mentioned display module to be measured
Connection, the other end of above-mentioned display module to be measured are connected with one end of above-mentioned power supply unit.The other end of above-mentioned power supply unit
It is connected with one end of above-mentioned main control unit.One end of above-mentioned FPGA unit is connected with one end of above-mentioned main control unit, above-mentioned
The other end of FPGA unit is connected with one end of above-mentioned display module to be measured.
Above-mentioned UI administrative units obtain the initiation parameter of display module to be measured and above-mentioned FPGA unit initiation parameter.
The initiation parameter for the above-mentioned display module to be measured that above-mentioned main control unit is obtained according to above-mentioned UI administrative units determines
Driving voltage size needed for above-mentioned display module to be measured, and it is above-mentioned to control above-mentioned power supply unit to be provided for the display module to be measured
Driving voltage corresponding to driving voltage size is with the enabled display module to be measured.
The FPGA unit initiation parameter that above-mentioned main control unit is obtained according to above-mentioned UI administrative units initializes above-mentioned FPGA
Unit.
Above-mentioned FPGA unit obtains test image, and the test image is exported to above-mentioned display module to be measured.
Above-mentioned optical detection unit detects optical property ginseng of the above-mentioned display module to be measured when showing above-mentioned test image
Number.
The above-mentioned optical performance parameter that above-mentioned main control unit is obtained by above-mentioned optical detection unit determines above-mentioned to be measured aobvious
Show the performance state of module.
In some possible implementations, above-mentioned FPGA unit may include that control unit, image processing unit, communication are single
Member and display interface unit.
One end of above-mentioned communication unit is connected with one end of above-mentioned control unit, the other end and the one of above-mentioned main control unit
End is connected.Above-mentioned control system also respectively with one end of above-mentioned image processing unit and above-mentioned display interface unit one
End is connected.
Above-mentioned FPGA unit initiation parameter is transmitted to above-mentioned FPGA by above-mentioned communication unit and controlled by above-mentioned main control unit
Unit processed.
Above-mentioned control system initializes above-mentioned image processing unit according to above-mentioned FPGA unit initiation parameter, with true
The image parameter for the test image that the fixed image processing unit is handled.
Above-mentioned control system initializes above-mentioned display interface unit according to above-mentioned FPGA unit initiation parameter, with true
Determine the type of display interface.
Above-mentioned image processing unit produces test image, which is shown by what above-mentioned display interface unit determined
Show that interface exports above-mentioned test image to above-mentioned display module to be measured.Wherein, above-mentioned test image is polar plot.
In some possible implementations, said system further includes storage unit.One end of said memory cells with it is upper
The one end for stating image processing unit is connected.Above-mentioned image processing unit obtains image data from said memory cells, and right
The image data is handled to obtain test image.Above-mentioned image processing unit is determined aobvious by above-mentioned display interface unit
Show that interface exports above-mentioned test image to above-mentioned display module to be measured.
In some possible implementations, above-mentioned display module test system further includes storage unit.Said external is deposited
One end of storage unit is connected with one end of above-mentioned image processing unit.Above-mentioned image processing unit is obtained from said memory cells
Video data is taken, and the video data is handled to obtain dynamic test image.
Above-mentioned image processing unit is exported above-mentioned test image by the display interface that above-mentioned display interface unit determines
To above-mentioned display module to be measured.
In some possible implementations, above-mentioned FPGA unit further includes vision signal converting unit.Above-mentioned video letter
One end of number converting unit is connected with one end of above-mentioned image processing unit.Above-mentioned vision signal converting unit collection video is defeated
Enter signal, which is converted to the identifiable transistor-transistor logic Transistor-Transistor Logic level of above-mentioned FPGA unit believes
Number, and input into above-mentioned image processing unit.Above-mentioned image processing unit is handled above-mentioned Transistor-Transistor Logic level signal to obtain
Dynamic test image.Above-mentioned image processing unit is by the display interface that above-mentioned display interface unit determines by the test chart
As output to the display module to be measured.
In some possible implementations, above-mentioned system further includes electrical detection unit.Above-mentioned electrical detection unit
One end be connected with one end of above-mentioned display module to be measured, the other end is connected with one end of above-mentioned main control unit.Above-mentioned master
Control unit and the driving voltage and driving current of above-mentioned display module to be measured are obtained by above-mentioned electrical detection unit, and judge the drive
Whether dynamic voltage is in predetermined voltage range and whether the driving current is in the range of predetermined current.Wherein, above-mentioned driving current
Operating current when being shown for above-mentioned display module to be measured with above-mentioned driving voltage.If being judged as NO, above-mentioned control list
The above-mentioned UI display units of stating of member control carry out warning prompt and control above-mentioned power supply unit to stop exporting above-mentioned driving voltage.
In some possible implementations, said system includes alarm unit.Above-mentioned alarm unit include buzzer and
Warning lamp.Above-mentioned buzzer and warning lamp are connected with above-mentioned main control unit.When above-mentioned main control unit controls above-mentioned UI displays single
When member carries out warning prompt, above-mentioned main control unit lights above-mentioned warning lamp and opens above-mentioned buzzer.
In some possible implementations, above-mentioned UI administrative units include instruction reception unit and instruction process unit.
One end of above-metioned instruction processing unit is connected with one end of above-metioned instruction receiving unit, above-metioned instruction processing unit
The other end be connected with above-mentioned main control unit.Above-metioned instruction receiving unit obtains user operation instruction input by user and transmits
To above-mentioned instruction process unit.Instruction process unit handles user operation instruction, initial to obtain display module to be measured
Change parameter and on-site programmable gate array FPGA control unit initiation parameter, and be transmitted to main control unit.
Second aspect provides a kind of display module test method, it may include：
Main control unit obtains the initiation parameter of display module to be measured and scene by user interface UI administrative units and can compile
Journey gate array FPGA unit initiation parameter.
Above-mentioned main control unit is according to needed for the initiation parameter of above-mentioned display module to be measured determines above-mentioned display module to be measured
Driving voltage size, and for the display module to be measured provide the corresponding driving voltage of above-mentioned driving voltage size with enable this treat
Survey display module.
Above-mentioned main control unit initializes above-mentioned FPGA unit according to FPGA unit initialization information, and passes through the FPGA unit
Light above-mentioned display module to be measured.
Above-mentioned main control unit obtains test image by FPGA unit, and by specifying display interface by above-mentioned test image
Export to above-mentioned display module to be measured.
Optical performance parameter of the above-mentioned display module to be measured of main control unit acquisition when showing the test image, and according to
The optical performance parameter determines the performance state of above-mentioned display module to be measured.
In some possible implementations, the method further includes：
Above-mentioned main control unit obtains driving voltage and the driving of above-mentioned display module to be measured by above-mentioned electrical detection unit
Electric current, and judge the driving voltage whether in predetermined voltage range and whether the driving current is in the range of predetermined current.Its
In, operating current when above-mentioned driving current is shown for above-mentioned display module to be measured with above-mentioned driving voltage.If it is judged as
No, then the above-mentioned UI display units of stating of above-mentioned control unit control carry out warning prompt and control above-mentioned power supply unit to stop in output
State driving voltage.
In embodiments of the present invention, first, UI administrative units obtain the initiation parameter of display module to be measured and described
FPGA unit initiation parameter, the initialization ginseng for the display module to be measured that above-mentioned main control unit is obtained according to above-mentioned UI administrative units
Number determines the driving voltage size needed for display module to be measured, and controls power supply unit to provide driving voltage for display module to be measured
Driving voltage corresponding to size is with the enabled display module to be measured.Secondly, main control unit is obtained according to above-mentioned UI administrative units
FPGA unit initiation parameter initialize above-mentioned FPGA unit.Then, FPGA unit obtains test image, and by the test chart
As output is shown into above-mentioned display module to be measured.Above-mentioned optical detection unit detects above-mentioned display module to be measured and is showing
The optical performance parameter during test image.Last above-mentioned main control unit is obtained optical by above-mentioned optical detection unit
Energy parameter determines the performance state of the display module to be measured.The embodiment of the present invention can increase display module test system and test work(
The diversity of energy and the flexibility used, improve the testing efficiency of display module.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described.It will be apparent that drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill of field, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a structure diagram of display module test system provided in an embodiment of the present invention；
Fig. 2 is another structure diagram of display module test system provided in an embodiment of the present invention；
Fig. 3 is another structure diagram of display module test system provided in an embodiment of the present invention；
Fig. 4 is the FPGA unit structure diagram of display module test system provided in an embodiment of the present invention；
Fig. 5 is the flow diagram of display module test method provided in an embodiment of the present invention.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes.Obviously, described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
The embodiment of the present invention, those of ordinary skill in the art obtained on the premise of creative work is not made it is all its
His embodiment, belongs to the protection of the present invention.
In the specific implementation, the described display module of the embodiment of the present invention may include light emitting diode (Light
Emitting Diode, LED) display module and liquid crystal display (Liquid Crystal Display, LCD) display module
Deng.Above display module is only citing, and non exhaustive, is not limited herein.Wherein, the product form of display module may include to paste
Product form after complete polaroid and binding chip, pasted the product shape after polaroid and binding chip and flexible PCB
State and polaroid, binding chip and flexible PCB are pasted and have pasted the product form after backlight template, do not limited herein.This
Inventive embodiments described display module test system be in can operating status, i.e., processing unit has been included in the system
Burning performs code, and each module that system is included is in normal operating conditions.
It is the structure diagram that display module provided in an embodiment of the present invention tests system referring to Fig. 1.The present invention is implemented
Example is using binding chip and flexible PCB and has pasted the display module of the product form after backlight template and is used as display module to be measured
It is described, which includes at least drive module and display module.Above-mentioned display module test system includes：With
Family interface UI administrative units 10, main control unit 20, field programmable gate array (FPGA) unit 30, power supply unit 40, optics inspection
Survey unit 50 and display module to be measured 60.
In some feasible embodiments, please also refer to Fig. 2, Fig. 2 is display module provided in an embodiment of the present invention
Another structure diagram of test system.Above-mentioned FPGA unit 30 may include that control unit 70, image processing unit 80, display connect
Mouth unit 90 and communication unit 100.
In the specific implementation, one end of above-mentioned main control unit 20 is connected with one end of above-mentioned UI administrative units 10, UI pipes
The other end of reason unit 10 is connected with one end of above-mentioned optical detection unit 50.The other end of above-mentioned optical detection unit 50 with
One end of above-mentioned display module to be measured 60 is connected.One end of the other end of the display module 60 to be measured and above-mentioned power supply unit 40
It is connected.The other end of the power supply unit 40 is connected with one end of above-mentioned main control unit 20.One end of above-mentioned communication unit 100 with
One end of above-mentioned main control unit 20 is connected, the other end of the communication unit 100 and the control unit in above-mentioned FPGA unit 30
70 one end connection.One end with above-mentioned image processing unit 80, above-mentioned display connect the other end of above-mentioned control unit 70 respectively
One end of mouth single 90 is connected.One end of above-mentioned image processing unit 80 is connected with one end of above-mentioned display interface unit 90.
The other end of above-mentioned display interface unit 90 is connected with one end of above-mentioned display module 60 to be measured.
In some feasible embodiments, above-mentioned UI administrative units 10 include instruction reception unit and instruction processing is single
Member.One end of above-metioned instruction processing unit is connected with one end of above-metioned instruction receiving unit, the other end of instruction process unit and
One end of above-mentioned main control unit 20 is connected.
In some feasible embodiments, above-mentioned power supply unit 40 may include display module driving power and system electricity
Source.Above-mentioned display module driving power can provide driving according to the control signal that above-mentioned main control unit exports for above-mentioned display module
Voltage, said system power supply can be that the work that other modules of above-mentioned display module test system are provided needed for each module respectively is electric
Pressure.
With reference to Fig. 1 and Fig. 2, to the operation principle of the display module test system described in the embodiment of the present invention into
The specific description of row.
After installing above-mentioned display module test system according to the connection relation of above-mentioned intermodule, in above-mentioned power supply unit 40
System power supply be respectively that UI administrative units 10, main control unit 20, FPGA unit 30 and optical detection unit 50 are powered.It is above-mentioned
Instruction reception unit in UI administrative units 10 can obtain user operation instruction input by user, and by UI administrative units 10
Instruction process unit above-mentioned user operation instruction is handled, to obtain display module to be measured initialization ginseng input by user
Number and FPGA unit initiation parameter.Wherein, the initiation parameter of display module to be measured may include the power supply of display module to be measured
Parameter, ground resistance etc..Above-mentioned FPGA unit initiation parameter may include that display interface type parameter, display module to be measured are shown
Size, display module screen resolution to be measured, type of drive etc..
For example, above-mentioned UI administrative units 10 can be a touch-screen module, which includes touch screen and data
Processing module.Show that multiple options for user are chosen on the display interface of touch screen.Above-mentioned option may include one or more
Model corresponding to the display module of a standard specification, wherein, different models corresponds to the display module of different size parameter.Example
Such as, full-color, TFT 10.4 of outdoor P16 etc..The selection that user can carry out the model of display module to be measured by clicking on these options.
Above-mentioned data processing module can obtain user operation instruction from the display interface of touch screen, according to the user operation instruction of acquisition
Determine the option that user clicks on, and determine the model of display module to be measured to match with the option that user clicks on.Then root again
Determined according to the model of above-mentioned display module to be measured and preserve the specifications parameter of the display module to be measured.Thereafter, above-mentioned data processing
Module handles the specifications parameter of above-mentioned display module to be measured, finally obtains display module initialization to be measured input by user
Parameter and FPGA unit initiation parameter, so that follow-up data processing operates with.Optionally, above-mentioned touch-screen can also shown
The setting interface of display module specifications parameter on interface, user can manual the input phase is answered on the setting interface display moulds to be measured
Group specifications parameter.Above-mentioned data processing module can obtain user operation instruction from the display interface of touch screen, according to acquisition
User operation instruction determines the specifications parameter of display module to be measured input by user.Thereafter, above-mentioned data processing module is to above-mentioned
The specifications parameter of display module to be measured input by user is handled, and finally obtains display module initialization to be measured input by user
Parameter and FPGA unit initiation parameter, so that follow-up data processing operates with.
After above-mentioned UI administrative units 10 obtain display module initiation parameter and FPGA unit initiation parameter to be measured, on
State main control unit 20 and can lead to from UI administrative units 10 and obtain above-mentioned display module initiation parameter to be measured and above-mentioned FPGA unit
Initiation parameter.Then main control unit 20 can enable above-mentioned display mould to be measured according to above-mentioned display module initiation parameter to be measured
Group.Main control unit 20 includes at least core processor, storage unit, communication unit etc., receives and sends for that can complete signal, number
According to the microprocessor module of the basic functions such as processing.For example, using 51 microcontrollers as the micro treatment module of core, with STM32F103
For the microprocessor module of core.
Specifically, main control unit 20 can pass through the data processing of the communication unit entrained by its own and UI administrative units 10
Module communicates, and obtains the initiation parameter and FPGA unit of the display module to be measured stored in above-mentioned data processing module
Initiation parameter.Main control unit 20 can determine the display to be measured according to the power parameter in the initiation parameter of display module to be measured
The size of driving voltage needed for module.After the driving voltage size of the display module to be measured is determined, main control unit 20 controls
Display module driving power in above-mentioned power supply unit 40 provides the driving voltage needed for it for the display module to be measured, so that
Display module to be measured is in the state that can be worked normally.
Above-mentioned main control unit 20 can pass through the FPGA unit initiation parameter obtained at UI administrative units 10 above-mentioned logical
News unit 100 is transmitted to the control unit 70 in above-mentioned FPGA unit 30.Above-mentioned control unit 70 can be according to above-mentioned FPGA unit
Initiation parameter carries out initialization operation to image processing unit 80 and display interface unit 90 and controls display module 60 to be measured
In drive module light display module to be measured.
Specifically, for example, the control unit 70 in above-mentioned FPGA unit 30 can be according to above-mentioned FPGA unit initiation parameter
In display interface type parameter determine the communication interface type of FPGA unit 30 and above-mentioned display module 60 to be measured, and by aobvious
Show that interface unit 90 carries out the setting of interface type.The interface type may include I2C (Inter-Integrated Circuit,
I2C) bus, Serial Peripheral Interface (SPI) (Serial Peripheral Interface, SPI), universal asynchronous receiving-transmitting transmitter
(Universal Asynchronous Receiver/Transmitter, UART) and mobile industry processor interface
(Mobile Industry Processor Interface, MIPI) etc..Above-mentioned control unit 70 can also be mono- according to above-mentioned FPGA
Display module display size to be measured in first initiation parameter determines the size for the test image that image processing unit 80 obtains,
The test chart that image processing unit 80 obtains can be determined by the display module screen resolution to be measured in FPGA initiation parameters
The pixel value of picture.The particular content of above-mentioned initialization operation just differs a citing herein.When above-mentioned FPGA unit 30 is according to FPGA
After unit initialization information completes initialization operation, the control unit 70 in FPGA unit 30 can be in display module 60 to be measured
Drive module is configured, and controls the display module of drive module startup display module 60 to be measured.
In some feasible embodiments, specifically, after the completion of the initialization of above-mentioned FPGA unit 30, FPGA unit 30
In control unit 70 start image processing unit 80.Above-mentioned image processing unit 80 can generate one according to vector drawing generating method
A or multiple vector graphics, and said one or multiple vector graphics are determined as test image.Wherein, the figure of above-mentioned polar plot
Shape parameter need to meet the image parameter for the test image that image processing unit 80 is determined according to FPGA unit initiation parameter.When upper
State after image processing unit 80 obtains above-mentioned test image, above-mentioned test image can be passed through the display interface unit after initialization
90 are transmitted to above-mentioned display module to be measured 60, wherein, its display interface type of display interface unit after above-mentioned initialization with it is upper
The display interface type for stating display module 60 to be measured is identical.
After above-mentioned display module 60 to be measured receives the test image from image processing unit 80, above-mentioned module to be measured
Display 60 shows the test image.At the same time, the optical detection unit 50 being connected with display module 60 to be measured is detected and obtained
Take optical performance parameter of the display module 60 to be measured when showing above-mentioned test image.Above-mentioned optical performance parameter may include to be measured
When gamma characteristic parameter, the display module to be measured 60 that display module 60 shows during above-mentioned test image show above-mentioned test image
Scintillation properties parameter when contrast level parameter and display module to be measured 60 show above-mentioned test image etc., does not limit herein.
Specifically, above-mentioned optical detection unit 50 may include the different optical sensor of one or more functions, it is not construed as limiting herein.On
When stating the first optical sensor in optical detection unit 50 and detecting and obtain display module 60 to be measured and show above-mentioned test image
Brightness value, and gamma characteristic parameter when determining that display module 60 to be measured shows above-mentioned test image according to above-mentioned brightness value and
Contrast level parameter.Meanwhile the second optical sensor in above-mentioned optical detection unit 50 detects and obtains display module 60 to be measured
Show flicker value during above-mentioned test image, and determine that display module 60 to be measured shows above-mentioned test image according to above-mentioned flicker value
When scintillation properties parameter.Just differ a citing herein.
Optical property of the above-mentioned optical detection unit 50 when getting display module 60 to be measured and showing above-mentioned test image
After parameter, above-mentioned optical performance parameter can be transmitted to above-mentioned main control unit 20.Above-mentioned main control unit 20 can be according to above-mentioned optics
The optical performance parameter that detection unit 50 obtains determines the performance state of display module 60 to be measured.Specifically, work as main control unit 20
After the optical performance parameter for obtaining when display module 60 to be measured shows above-mentioned test image from above-mentioned optical detection unit 50, respectively
Judge whether above-mentioned optical performance parameter meets optical performance parameter scope when 60 performance state of display module to be measured is normal, and
The performance state of display module 60 to be measured is determined according to judging result.For example, the corresponding predetermined threshold value of scintillation properties parameter is a,
The corresponding preset threshold range of gamma characteristic parameter is b to c.Assuming that the display module to be measured 60 that optical detection unit 50 obtains is aobvious
It is d to show scintillation properties parameter during above-mentioned test image；The display module to be measured 60 that optical detection unit 50 obtains shows above-mentioned
Gamma characteristic parameter during test image is f.If d<A, it is determined that the scintillation properties state of display module 60 to be measured be it is normal, it is no
Then, it is determined that the scintillation properties state of display module 60 to be measured is improper.If b<f<C, it is determined that display module 60 to be measured
Gamma characteristic state is normal, otherwise, it determines the gamma characteristic state of display module to be measured 60 is improper.
In some feasible embodiments, when main control unit 20 determines that display module 60 to be measured shows above-mentioned test image
When performance state after, can control above-mentioned UI administrative units 10 show above-mentioned test result.Specifically, main control unit 20 will be to be measured
The display module to be measured 60 that optical performance parameter and main control unit determine when display module 60 shows above-mentioned test image is shown
Performance state during above-mentioned test image is transmitted to the data processing module in UI administrative units 10.Above-mentioned data processing module pair
Above-mentioned optical performance parameter and performance state are handled, and the display module being transmitted in UI administrative units is shown.Its
In, the display module in UI administrative units 10 may include liquid crystal display, touch screen etc., not limit herein.
In embodiments of the present invention, first, UI administrative units obtain the initiation parameter of display module to be measured and described
FPGA unit initiation parameter, the initialization ginseng for the display module to be measured that above-mentioned main control unit is obtained according to above-mentioned UI administrative units
Number determines the driving voltage size needed for display module to be measured, and controls power supply unit to provide driving voltage for display module to be measured
Driving voltage corresponding to size is with the enabled display module to be measured.Secondly, main control unit is obtained according to above-mentioned UI administrative units
FPGA unit initiation parameter initialize above-mentioned FPGA unit.Then, FPGA unit obtains test image, and by the test chart
As output is shown into above-mentioned display module to be measured.Above-mentioned optical detection unit detects above-mentioned display module to be measured and is showing
The optical performance parameter during test image.Last above-mentioned main control unit is obtained optical by above-mentioned optical detection unit
Energy parameter determines the performance state of the display module to be measured.Can increase display module test system and test function diversity and
The flexibility used, improves the testing efficiency of display module.
It is another structure diagram that display module provided in an embodiment of the present invention tests system referring to Fig. 3.It is of the invention real
Apply example using binding chip and flexible PCB and pasted the display module of the product form after backlight template as executive agent into
Row description, the display module include at least drive module and display module.Display module test system includes：UI administrative units
200th, main control unit 210, FPGA unit 220, power supply unit 230, display module to be measured 240, storage unit 250, optical detection
Unit 260 and alarm unit 270.
In some feasible embodiments, please also refer to Fig. 4, Fig. 4 is display module provided in an embodiment of the present invention
220 structure diagram of FPGA unit of test system.The FPGA unit 220 may include to control Unit 221, communication unit 222, figure
As processing unit 223, display interface unit 224, Video Quality Metric unit 225.
In the specific implementation, one end of UI administrative units 200 is connected with one end of main control unit 210, main control unit 210 it is another
One end is connected with one end of alarm unit 270.The other end of main control unit 210 is connected with one end of power supply unit 230, power supply
The other end of unit 230 is connected with one end of display module 240 to be measured.The other end of display module 240 to be measured is examined with optics
The one end for surveying unit 260 is connected, and the other end of optical detection unit 260 is connected with one end of main control unit 210.Master control list
One end of member 210 is connected with one end of the communication unit 222 in FPGA unit 220, the other end of communication unit 222 and control
One end of unit 221 is connected.One end of control unit 221 and one end of display interface unit 224 are vectorial, at the other end and image
One end of reason unit 223 is connected, and the other end is connected with one end of Video Quality Metric unit 225.One end of display interface unit 224
It is connected with one end of image processing unit 223, the other end of image processing unit 223 is connected with one end of Video Quality Metric unit
Connect.The one end of the other end of image processing unit 233 also with said memory cells 250 is connected.Display interface unit 224 it is another
The one end of one end also with above-mentioned display module 240 to be measured is connected.
In some feasible embodiments, above-mentioned display module test system may also include electrical detection unit 280, on
Stating one end of electrical detection unit, one end with above-mentioned power supply unit 230, one end of above-mentioned display module 240 to be measured are connected respectively
Connect, the other end is connected with one end of above-mentioned main control unit 210.
In some feasible embodiments, above-mentioned UI administrative units 200 include instruction reception unit and instruction processing is single
Member.One end of above-metioned instruction processing unit is connected with one end of above-metioned instruction receiving unit, the other end of instruction process unit and
One end of above-mentioned main control unit 210 is connected.
In some feasible embodiments, above-mentioned power supply unit 230 may include display module driving power and system electricity
Source.Above-mentioned display module driving power can provide driving according to the control signal that above-mentioned main control unit exports for above-mentioned display module
Voltage, said system power supply can be that the work that other modules of above-mentioned display module test system are provided needed for each module respectively is electric
Pressure.
With reference to Fig. 3 and Fig. 4, to the operation principle of the display module test system described in the embodiment of the present invention into
The specific description of row.
After above-mentioned display module test system being installed according to the connection relation of above-mentioned intermodule, above-mentioned power supply unit 230
Interior system power supply is respectively UI administrative units 200, main control unit 210, FPGA unit 220, external memory unit 250, optics
Detection unit 260 and alarm unit 270 are powered.It is defeated that instruction reception unit in above-mentioned UI administrative units 200 can obtain user
The user operation instruction entered, and by the instruction process unit in UI administrative units 200 to above-mentioned user operation instruction at
Reason, to obtain display module initiation parameter to be measured and FPGA unit initiation parameter input by user.UI administrative units 200 obtain
The operation principle of display module initiation parameter to be measured and FPGA unit initiation parameter input by user is taken to refer to one in fact
Apply the work that the UI administrative units 10 described in example obtain display module initiation parameter and FPGA unit initiation parameter to be measured
Make principle, details are not described herein again.
When above-mentioned UI administrative units 200 obtain display module initiation parameter to be measured input by user and FPGA unit is initial
After changing parameter, main control unit 210 obtains above-mentioned display module initiation parameter to be measured and FPGA unit from UI administrative units 200
Initiation parameter, and carried according to above-mentioned display module initiation parameter control power supply unit 230 to be measured for display module 240 to be measured
For the driving voltage needed for it.Main control unit 210 also can initialize above-mentioned FPGA unit according to FPGA unit initiation parameter
220, to determine that the image of the 223 retrievable test image of interface type and image processing unit of display interface unit 224 is joined
Number.Wherein, above-mentioned image parameter may include picture size size, image resolution ratio etc..The specific operation process of above-mentioned initialization
UI administrative units 10 in an embodiment are referred to enable display module 60 to be measured and initialize the operating process of FPGA unit 30,
Just repeat no more herein.Then, the control unit 221 in above-mentioned FPGA unit 220 can be to the driving in display module 240 to be measured
Module is configured, and controls the drive module to start the display module in display module 240 to be measured.
In some feasible embodiments, specifically, the control unit 221 in above-mentioned FPGA unit 220 start it is above-mentioned
Image processing unit 223.Above-mentioned image processing unit 223 can generate one or more polar plots according to polar plot into method
Shape, and above-mentioned vector graphics is determined as test image.Wherein, the graphic parameter of above-mentioned polar plot need to meet image processing unit
The graphic parameter of 223 test images determined according to FPGA unit initiation parameter.When in the acquisition of above-mentioned image processing unit 223
After stating test image, above-mentioned test image can be transmitted to above-mentioned display to be measured by the display interface unit 224 after initialization
Module 240, wherein, its display interface type of display interface unit and above-mentioned display module 240 to be measured after above-mentioned initialization
Display interface type is identical.
In some feasible embodiments, specifically, above-mentioned image processing unit 223 can be from said memory cells 250
Middle acquisition is stored in view data or video data in storage unit 250.Image processing unit 233 can be split by image to be calculated
The methods of method, algorithm for image enhancement, handles above-mentioned view data, to obtain static test image, as form is JPG,
The image of BMP.Image processing unit 233 can by the methods of algorithm for image enhancement, merging algorithm for images to above-mentioned view data
Handled, to obtain dynamic test image, such as the image that form is GIF.Image processing unit 233 can also be cut by video
The methods of method of collecting or video data are handled handles above-mentioned video data, with acquisition static state or dynamic test chart
Picture.Wherein, said external storage unit 250 can be the FLASH flash memories of large capacity, carry out burning in lower electricity, can make when powering on
With.Complete digital card (Secure Digital the Memory Card, SD of said external storage unit 250 or outside plug type
Card).Do not limit herein.
In some feasible embodiments, specifically, the Video Quality Metric unit 225 in above-mentioned FPGA unit 220 can be real
When slave external reception vision signal.Wherein, above-mentioned vision signal is collected in real time by exterior video signal collection apparatus,
And it is non-Transistor-Transistor Logic level class signal.Above-mentioned vision signal converting unit 220 is changed above-mentioned vision signal to obtain TTL classes
Vision signal, the video data corresponding to above-mentioned vision signal is obtained further according to above-mentioned TTL classes vision signal, and by above-mentioned video
Data transfer is to above-mentioned image processing unit 223.Above-mentioned image processing unit 223 can pass through video clipping method or video data
The methods of processing, handles above-mentioned video data, with acquisition static state or dynamic test image.Wherein, above-mentioned video
Signal collecting device can be any collecting device with shooting or camera function.
After above-mentioned image processing unit 223 obtains above-mentioned test image, can by above-mentioned test image by initialization after
Display interface unit 224 be transmitted to above-mentioned display module to be measured 240.Wherein, the display that above-mentioned display interface type determines connects
The display interface type of mouth unit 224 is identical with the display interface type of above-mentioned display module 240 to be measured.
When above-mentioned image processing unit 223 will be above-mentioned by the display interface unit 224 that above-mentioned display interface type determines
After test image is transmitted to display module 240 to be measured, above-mentioned display module 240 to be measured shows the test image.With display to be measured
The optical detection unit 260 that module 240 is connected detects and obtains display module 240 to be measured when showing above-mentioned test image
Optical performance parameter.Above-mentioned main control unit 210 can obtain above-mentioned optical performance parameter from above-mentioned optical detection unit 260, and
Performance state of the display module 240 to be measured when showing the test image is determined according to above-mentioned optical performance parameter.Above-mentioned light
Detection unit 260 is learned to detect and obtain the work of optical performance parameter of the display module 240 to be measured when showing above-mentioned test image
Optical detection unit 50 in a upper embodiment is referred to as principle and detects and obtain display module 60 to be measured showing above-mentioned test
The operation principle of optical performance parameter during image.Above-mentioned main control unit 210 determines to be measured aobvious according to above-mentioned optical performance parameter
Show that the operation principle of performance state of the module 240 when showing the test image refers to main control unit 20 in an embodiment
The optical performance parameter obtained according to above-mentioned optical detection unit 50 determines that the work of the performance state of display module 60 to be measured is former
Reason, just repeats no more herein.
In some feasible embodiments, when main control unit 210 determines that display module 240 to be measured shows above-mentioned test chart
As when performance state after, can control above-mentioned UI administrative units 200 show above-mentioned test result.Specifically, main control unit 210 will
The display mould to be measured that optical performance parameter and main control unit 210 determine when display module 240 to be measured shows above-mentioned test image
Performance state during the above-mentioned test image of display of group 240 is transmitted to the data processing module in UI administrative units 210.Above-mentioned data
Processing module handles above-mentioned optical performance parameter and performance state, and the display module being transmitted in UI administrative units into
Row display.Wherein, the display module in UI administrative units may include liquid crystal display, touch screen etc., not limit herein.
In some feasible embodiments, when above-mentioned display module 240 to be measured is in running order, above-mentioned electrically inspection
The operating voltage value and working current value of above-mentioned display module to be measured 240 can be detected in real time by surveying unit 280, and above-mentioned work is electric
Pressure value and above-mentioned working current value are uploaded to above-mentioned main control unit 210.Above-mentioned main control unit 210 can be according at the beginning of above-mentioned module to be measured
Whether beginningization parameter judges normal during the working status of above-mentioned display module to be measured 240.Specifically, in the judgement of main control unit 210
State operating voltage value whether in above-mentioned display module initiation parameter to be measured determine operating voltage range in.If it is judged as
Be then judge again above-mentioned working current value whether in above-mentioned display module initiation parameter to be measured determine current margin
It is interior, if being judged as YES, it is determined that the working status of above-mentioned display module 240 to be measured is normal, otherwise determines above-mentioned display to be measured
The working status of module 240 is improper.
If above-mentioned main control unit 210 determines that the working status of above-mentioned display module to be measured 240 is improper, control above-mentioned
Power supply unit 230 stops powering for above-mentioned display module 240 to be measured, while controls above-mentioned alarm unit 270 to carry out alarm.
Wherein, above-mentioned alarm unit may include warning lamp and buzzer, not limit herein.Specifically, if above-mentioned main control unit 210 is true
The working status of fixed above-mentioned display module 240 to be measured is improper, then above-mentioned main control unit 210 controls above-mentioned alarm unit 270
Open buzzer and light warning lamp.
In embodiments of the present invention, first, UI administrative units obtain the initiation parameter of display module to be measured and described
FPGA unit initiation parameter, the initialization ginseng for the display module to be measured that above-mentioned main control unit is obtained according to above-mentioned UI administrative units
Number determines the driving voltage size needed for display module to be measured, and controls power supply unit to provide driving voltage for display module to be measured
Driving voltage corresponding to size is with the enabled display module to be measured.Secondly, main control unit is obtained according to above-mentioned UI administrative units
FPGA unit initiation parameter initialize above-mentioned FPGA unit.Then, FPGA unit obtains test image, and by the test chart
As output is shown into above-mentioned display module to be measured.Above-mentioned optical detection unit detects above-mentioned display module to be measured and is showing
The optical performance parameter during test image.Last above-mentioned main control unit is obtained optical by above-mentioned optical detection unit
Energy parameter determines the performance state of the display module to be measured.Can increase display module test system and test function diversity and
The flexibility used, improves the testing efficiency of display module.
Referring to Fig. 5, Fig. 5 is the flow diagram for the display module test method that the present invention implements offer.The present invention is implemented
The display module test method that example provides is applicable to the display module test system described in above-mentioned each embodiment.It is above-mentioned
Display module test system can perform display module test method provided in an embodiment of the present invention by the unit built in it.
Display module test method described in the embodiment of the present invention includes step：
S301, main control unit obtain initiation parameter and the scene of display module to be measured by user interface UI administrative units
Programmable gate array FPGA unit initiation parameter.
S302, above-mentioned main control unit is according to needed for the initiation parameter of above-mentioned display module to be measured determines display module to be measured
Driving voltage size, and for display module to be measured provide the corresponding driving voltage of above-mentioned driving voltage size this be to be measured to enable
Display module.
S303, above-mentioned main control unit initialize above-mentioned FPGA unit, and pass through according to above-mentioned FPGA unit initialization information
FPGA unit lights above-mentioned display module to be measured.
S304, above-mentioned main control unit obtain test image by above-mentioned FPGA unit, and by specifying display interface should
Test image is exported to above-mentioned display module to be measured.
S305, above-mentioned main control unit obtain optical property ginseng of the above-mentioned display module to be measured when showing above-mentioned test image
Count, and the performance state of the display module to be measured is determined according to the optical performance parameter.Wherein, above-mentioned display module test method
In the implementation sequential of each step be only for example, do not limit herein.
Specifically, the test philosophy of the above-mentioned described display module of display module test method refers to above-described embodiment
The operation principle of display module test system described in one, just repeats no more herein.
Using the described display module test method of the embodiment of the present invention, display module test system and test can be increased
The diversity of function and the flexibility used, improve the testing efficiency of display module.
One of ordinary skill in the art will appreciate that realize all or part of flow in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, which can be stored in a computer read/write memory medium,
The program is upon execution, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic disc,
CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access
Memory, RAM) etc..
Claims (10)
- A kind of 1. test system of display module, it is characterised in that including：Main control unit, on-site programmable gate array FPGA list Display module, power supply unit, user interface UI administrative units and optical detection unit first, to be measured；One end of the main control unit is connected with one end of the UI administrative units, the other end of the UI administrative units and institute The one end for stating optical detection unit is connected, the other end of the optical detection unit and one end phase of the display module to be measured Connection, the other end of the display module to be measured are connected with one end of the power supply unit, the other end of the power supply unit It is connected with one end of the main control unit, the end of the FPGA unit one is connected with one end of the main control unit, described The other end of FPGA unit is connected with one end of the display module to be measured；The UI administrative units obtain the initiation parameter of display module to be measured and the FPGA unit initiation parameter；The main control unit is according to determining the initiation parameter for the display module to be measured that the UI administrative units obtain Driving voltage size needed for display module to be measured, and control the power supply unit to provide the drive for the display module to be measured Driving voltage corresponding to dynamic voltage swing is with the enabled display module to be measured；The FPGA unit initiation parameter that the main control unit is obtained according to the UI administrative units initializes the FPGA Unit；The FPGA unit obtains test image, and the test image is exported to the display module to be measured；The optical detection unit detects optical performance parameter of the display module to be measured when showing the test image；The optical performance parameter that the main control unit is obtained by the optical detection unit determines the display mould to be measured The performance state of group.
- 2. system according to claim 1, it is characterised in that the FPGA unit includes control unit, image procossing list Member, communication unit and display interface unit；One end of the communication unit is connected with one end of described control unit, the other end of the communication unit and the master One end of control unit is connected, one end of the control system also respectively with one end of described image processing unit and described One end of display interface unit is connected；The FPGA unit initiation parameter is transmitted to the FPGA by the communication unit and controls list by the main control unit Member；The control system initializes described image processing unit according to the FPGA unit initiation parameter, to determine institute State the parameter for the test image that image processing unit is handled；The control system initializes the display interface unit according to the FPGA unit initiation parameter, aobvious to determine Show the type of interface；Described image processing unit produces test image, the display that the test image is determined by the display interface unit Interface exports the test image to the display module to be measured, wherein, the test image is polar plot.
- 3. system according to claim 2, it is characterised in that the system also includes storage unit；One end of the storage unit is connected with one end of described image processing unit；Described image processing unit obtains image data from institute's storage unit, and the image data is handled to obtain Test image；Described image processing unit is exported the test image to institute by the display interface that the display interface unit determines State display module to be measured.
- 4. system according to claim 2, it is characterised in that the system also includes storage unit；One end of the storage unit is connected with one end of described image processing unit；Described image processing unit obtains video data from the storage unit, and the video data is handled to obtain Take dynamic test image；Described image processing unit is exported the test image to institute by the display interface that the display interface unit determines State display module to be measured.
- 5. system according to claim 2, it is characterised in that the FPGA unit further includes vision signal converting unit；One end of the vision signal converting unit is connected with one end of described image processing unit；The vision signal converting unit gathers video input signals, and the video input signals are converted to the FPGA unit Identifiable transistor-transistor logic Transistor-Transistor Logic level signal, and input into described image processing unit；Described image processing unit is handled the Transistor-Transistor Logic level signal to obtain dynamic test image；At described image Reason unit is exported the test image to the display module to be measured by the display interface that the display interface unit determines.
- 6. according to the system described in claim 3-5 any one, it is characterised in that the system further includes electrical detection list Member；One end of the electrical detection unit is connected with one end of the display module to be measured, the other end and the main control unit One end be connected；The main control unit obtains the driving voltage and the driving of the display module to be measured by the electrical detection unit Electric current, and judge the driving voltage whether in predetermined voltage range and whether the driving current is in predetermined current scope It is interior, wherein, the operating current when driving current is shown for the display module to be measured with the driving voltage；If being judged as NO, described control unit controls the UI display units to carry out warning prompt and controls the power supply unit Stop exporting the driving voltage.
- 7. system according to claim 6, it is characterised in that the system comprises alarm unit；The alarm unit bag Include buzzer and warning lamp；The buzzer and warning lamp are connected with the main control unit, when the main control unit controls institute When stating UI display units progress warning prompt, the main control unit lights the warning lamp and opens the buzzer.
- 8. system according to claim 7, it is characterised in that the UI administrative units include instruction reception unit and instruction Processing unit；One end of described instruction processing unit is connected with one end of described instruction receiving unit, described instruction processing unit it is another One end is connected with the main control unit；Described instruction receiving unit obtains user operation instruction input by user and is transmitted to described instruction processing unit；Described instruction processing unit handles the user operation instruction, with obtain display module initiation parameter to be measured and On-site programmable gate array FPGA control unit initiation parameter, and it is transmitted to the main control unit.
- A kind of 9. method of display module test, it is characterised in that including：Main control unit obtains the initiation parameter and field programmable gate of display module to be measured by user interface UI administrative units Array FPGA unit initiation parameter；Drive of the main control unit according to needed for the initiation parameter of the display module to be measured determines the display module to be measured Dynamic voltage swing, and the corresponding driving voltage of the driving voltage size is provided to enable described treat for the display module to be measured Survey display module；The main control unit initializes the FPGA unit, and pass through the FPGA according to the FPGA unit initialization information Unit lights the display module to be measured；The main control unit obtains test image by the FPGA unit, and by specifying display interface by the test image Export to the display module to be measured；Optical performance parameter of the main control unit acquisition display module to be measured when showing the test image, and according to The optical performance parameter determines the performance state of the display module to be measured.
- 10. according to the method described in claim 9, it is characterized in that, the method further includes：The main control unit obtains the driving voltage and driving current of the display module to be measured, and judges the driving electricity Pressure whether in predetermined voltage range and whether the driving current in the range of predetermined current, wherein, the driving current is The operating current when display module to be measured is shown with the driving voltage；If being judged as NO, the main control unit controls the UI administrative units to carry out warning prompt and controls the power supply unit Stop exporting the driving voltage.
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| KR102332771B1 (en) * | 2020-08-31 | 2021-12-01 | (주)엠에스쎌텍 | System of examining a display module |
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