CN103105684B - LCD MODULE method of testing, device, system and testing apparatus - Google Patents
LCD MODULE method of testing, device, system and testing apparatus Download PDFInfo
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- CN103105684B CN103105684B CN201310023303.0A CN201310023303A CN103105684B CN 103105684 B CN103105684 B CN 103105684B CN 201310023303 A CN201310023303 A CN 201310023303A CN 103105684 B CN103105684 B CN 103105684B
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Abstract
The invention discloses a kind of LCD MODULE method of testing, device, system and testing apparatus, in order to improve testing efficiency and the compatibility of testing apparatus of LCD MODULE test.Wherein, liquid crystal display module test system, comprises host computer, liquid crystal test control device, driving circuit and LCD testing, wherein: host computer is connected with at least two liquid crystal test control devices; Each liquid crystal test control device, is connected with at least two LCD MODULE by driving circuit, and described liquid crystal test control device is connected by liquid crystal drive interface with between described driving circuit; Described host computer, for sending liquid crystal drive interface initialization instruction to described liquid crystal test control device; Described liquid crystal test control device, for after receiving described liquid crystal drive interface initialization instruction, carries out initialization to liquid crystal drive interface; And download test pattern from described host computer, be transferred to each LCD MODULE by described driving circuit and show.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly relate to a kind of LCD MODULE method of testing, device, system and testing apparatus.
Background technology
LCD MODULE (LCM, Liquid Crystal Display Module) is a kind of assembly liquid crystal display device, web member, integrated circuit and wiring board and backlight are assembled together.Liquid crystal display device shows image by the rotation or deflection angle controlling liquid crystal, and backlight provides light source, for liquid crystal display device display frame to liquid crystal display device (that is, display panels).In order to ensure LCD MODULE quality, in the process that it is developed, the display quality of LCD MODULE, reliability and optical property must be tested.
Because current LCD MODULE mainly contains micro-control unit (MCU, Micro Control Unit) interface, serial peripheral equipment (SPI, Serial Peripheral Interface) interface, CPU (central processing unit) (CPU, Central Processing Unit) interface, RGB (Red Green Blue) interface, Low Voltage Differential Signal (LVDS, Low-Voltage Differential Signaling) interface, transition minimized differential signaling (TMDS) interface, Mini-LVDS interface, low-swing difference signal (RSDS, Reduced Swing Differential Signal) etc., and DP(Display Port) interface, mobile Industry Processor (MIPI, Mobile Industry Processor Interface) interface etc., and same testing apparatus only supports some little interface modes usually, particularly present original large scale liquid crystal display produces line and does small-size liquid crystal displays transition, owing to existing testing apparatus not being supported the initialization interface that small-size liquid crystal displays needs, cause the compatibility of testing apparatus poor, simultaneously due to the LCD MODULE limited amount that a testing apparatus can connect, cause testing efficiency lower.
Summary of the invention
The embodiment of the present invention provides a kind of LCD MODULE method of testing, device, system and testing apparatus, in order to improve testing efficiency and the compatibility of testing apparatus of LCD MODULE test.
The embodiment of the present invention provides a kind of liquid crystal display module test system, comprises host computer, liquid crystal test control device, driving circuit and LCD testing, wherein:
Described host computer at least two liquid crystal test control devices connect; Each liquid crystal test control device, is connected with at least two LCD MODULE by driving circuit, and described liquid crystal test control device is connected by liquid crystal drive interface with between described driving circuit;
Described host computer, for sending liquid crystal drive interface initialization instruction to described liquid crystal test control device;
Described liquid crystal test control device, for after receiving described liquid crystal drive interface initialization instruction, carries out initialization to described liquid crystal drive interface; And download test pattern from described host computer, be transferred to each LCD MODULE by described driving circuit and show.
The embodiment of the present invention provides a kind of LCD MODULE method of testing, comprising:
Liquid crystal test control device receives the liquid crystal drive interface initialization instruction that host computer sends;
Described liquid crystal test control device carries out initialization according to described liquid crystal drive interface initialization instruction to liquid crystal drive interface;
The test pattern of described liquid crystal test control device reading pre-stored is transferred to LCD MODULE and shows, and wherein, described test pattern is that described liquid crystal test control device is downloaded from described host computer and stores.
The embodiment of the present invention provides a kind of LCM test device, comprising:
Microprocessor, for downloading and On-board test image from host computer in advance; And receive the liquid crystal drive interface initialization instruction of host computer transmission;
Liquid crystal display control module, for carrying out initialization according to described liquid crystal drive interface initialization instruction to liquid crystal drive interface; And from described microprocessor, read described test pattern be transferred to LCD MODULE and show.
The embodiment of the present invention provides a kind of testing apparatus, comprises above-mentioned LCM test device.
The LCD MODULE method of testing that the embodiment of the present invention provides, device, system and testing apparatus, host computer is connected with at least two liquid crystal test control devices, each liquid crystal test control device, be connected with at least two LCD MODULE by driving circuit, liquid crystal test control device is connected by liquid crystal drive interface with between driving circuit, like this, when testing LCD MODULE, because host computer can control multiple liquid crystal test control device simultaneously, each liquid crystal test control device can be tested multiple LCD MODULE simultaneously, thus can testing efficiency be improved, simultaneously, because liquid crystal test control device is connected by liquid crystal drive interface with between driving circuit, when reality is tested, different liquid crystal drive interfaces can be designed as required, liquid crystal test control device can be tested the LCD MODULE of distinct interface, thus improve compatibility.
Other features and advantages of the present invention will be set forth in the following description, and, partly become apparent from instructions, or understand by implementing the present invention.Object of the present invention and other advantages realize by structure specifically noted in write instructions, claims and accompanying drawing and obtain.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, forms a part of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is in the embodiment of the present invention, the structural representation of liquid crystal display module test system;
Fig. 2 is in the embodiment of the present invention, the syndeton schematic diagram between FPGA and driving circuit and power supply;
Fig. 3 is in the embodiment of the present invention, FPGA structural design schematic diagram;
Fig. 4 is in the embodiment of the present invention, the implementing procedure schematic diagram of LCD MODULE method of testing;
Fig. 5 is in the invention process illustration, the structural representation of liquid crystal test control device.
Embodiment
In order to improve the testing efficiency of LCD MODULE test and improve the compatibility of testing apparatus, embodiments provide a kind of LCD MODULE method of testing, device, system and testing apparatus.
Below in conjunction with Figure of description, the preferred embodiments of the present invention are described, be to be understood that, preferred embodiment described herein is only for instruction and explanation of the present invention, be not intended to limit the present invention, and when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.
As shown in Figure 1, be the structural representation of the liquid crystal display module test system that the embodiment of the present invention provides, comprise host computer 101, liquid crystal test control device 102, driving circuit 103 and LCD testing 104.Liquid crystal display module test system structure shown in Fig. 1 is as follows: host computer 101 is connected with at least two liquid crystal test control devices 102; Each liquid crystal test control device 102 is connected with at least two LCD MODULE 104 by driving circuit 103, is connected between liquid crystal test control device 102 with driving circuit 103 by liquid crystal drive interface, wherein:
Host computer 101, for sending liquid crystal drive interface initialization instruction to liquid crystal test control device 102;
Liquid crystal test control device 102, for after receiving liquid crystal drive interface initialization instruction, carries out initialization to liquid crystal drive interface; And download test pattern from host computer 101, be transferred to each LCD MODULE 104 by driving circuit 103 and show.
Preferably, host computer 101 is connected with each liquid crystal test control device 102 by USB interface or 485 interfaces or network interface, when specifically implementing, can select different interfaces according to the data volume size of transmitted data and required transfer rate.
During concrete enforcement, liquid crystal drive interface comprises the single-ended drive signaling interfaces such as MCU interface, SPI interface, rgb interface, also can need reserved LVDS interface, MIPI interface and DP interface, RSDS interface, Mini-LVDS interface, cpu i/f, TMDS interface etc. according to reality test, the embodiment of the present invention is not construed as limiting this.
During concrete enforcement, liquid crystal test control device 102, may be used for the test pattern downloaded from host computer 101 to be stored in internal storage or external memory storage; And after completing the initialization to liquid crystal drive interface, from internal storage or external memory storage, read test image is in buffer memory, and from buffer memory read test image, be transferred to each LCD MODULE 104 by driving circuit 103 and show.
In order to meet LCD MODULE testing requirement, preferably, in the embodiment of the present invention, liquid crystal test control device partial function can by FPGA(Field-Programmable Gate Array, i.e. field programmable gate array) technology realization.The repertoire of data communication, storage and steering logic is realized in FPGA inside, its integrated level is high, favorable expandability, as shown in Figure 2, for the syndeton schematic diagram between FPGA and driving circuit and power supply, integrated internal storage FLASH, DDR(Double Data Rate on FPFA) storer, with the interface (such as 485 interfaces, USB interface or network interface etc.) and flash memory (CF, Compact Flash) interface etc. of host computer.
During specific implementation, can microprocessor be embedded in FPGA, be realized the partial function of microprocessor by FPGA, like this, the function such as interface communication, reading and writing data can be completed by microprocessor and control, realize liquid crystal drive interface control logic by FPGA.
Based on this, in the embodiment of the present invention, as shown in Figure 3, it is made up of microprocessor 301 and liquid crystal display control module 302 a kind of possible FPGA structural design.
During concrete enforcement, microprocessor 301 comprises memory cell 3011, main control unit 3012 and input-output unit 3013, wherein:
Memory cell 3011, primary responsibility to the storage of image information and and storage to liquid crystal display control module 302 instruction, comprise FLASH controller, for controlling FLASH memory, CF controller, for controlling CF, SPI FLASH controller, for controlling SPI FLASH, dual-port controller, for controlling DDR and internal RAM;
Main control unit 3012, it is the control and management unit of whole system, complete the control and management to memory cell 3011, to the protocol processes of input-output unit 3013 and control, liquid crystal cells control and management and and the function such as mutual of user, comprise MicroBlaze data RAM, instruction RAM, Timer/Counter and interrupt module;
Input-output unit 3013, primary responsibility and user mutual and to the reception and registration sent instructions under host computer, comprise GPIO(universal input to export) interface, 485 interfaces, SPI interface etc., wherein, GPIO interface is connected with user interactive module, and 485 interface logics are connected with PC, and SPI interface is used for realizing SPI interface function.
Liquid crystal display control module 302 comprises video memory controller 3021, liquid crystal drive interface logic controller 3022, and liquid crystal drive interface 3,023 three part, wherein, video memory controller 3021 is connected with the dual-port controller of memory cell 3011 and liquid crystal drive interface logic controller 3022 respectively, for after the liquid crystal drive interface initialization instruction that issues at host computer, its view data stored is read from memory cell 3011, and according to liquid crystal drive interface type, the view data of reading is converted to the view data of the corresponding form of this liquid crystal drive interface type, liquid crystal drive interface logic controller 3022 is connected with the interrupt module of main control unit 3012 and liquid crystal drive interface 3023 respectively, liquid crystal drive interface 3023 is outwards connected with driving circuit 103.
Preferably, driving circuit 103 can drive the LCD MODULE of more than 10 pieces, and meet the data transmission rates demands of the highest 105MHZ, for single-ended signal, driving circuit design adopts daisy chain topology, alleviates the load pressure of single driving circuit, simultaneously by the mode of grouping multiple drive power, suitable design matched impedance, ensures signal integrity.
Based on same inventive concept, a kind of LCD MODULE method of testing, device and testing apparatus is additionally provided in the embodiment of the present invention, the principle of dealing with problems due to said method, device and equipment is similar to liquid crystal display module test system, therefore the enforcement of said method, device and equipment see the enforcement of system, can repeat part and repeats no more.
As shown in Figure 4, be the implementing procedure schematic diagram of the LCD MODULE method of testing that the embodiment of the present invention provides, comprise the following steps:
S401, liquid crystal test control device receive the liquid crystal drive interface initialization instruction that host computer sends;
S402, liquid crystal test control device carry out initialization according to liquid crystal drive interface initialization instruction to liquid crystal drive interface;
The test pattern of S403, liquid crystal test control device reading pre-stored is transferred to LCD MODULE and shows.
During concrete enforcement, liquid crystal test control device can be downloaded test pattern from host computer and be stored in local internal storage or external memory storage, like this, after completing liquid crystal drive interface initialization, can from internal storage or external memory storage read test image, due to the restriction of internal storage or external memory storage processing speed, during concrete enforcement, can in advance test pattern be read in buffer memory (such as DDR) from internal storage or external memory storage, then, from DDR, read test image transmitting shows to LCD MODULE again.Wherein, test pattern can be multiple, and like this, each test pattern can all read in buffer memory by LCM test device in advance, then can read each test pattern in buffer memory successively and be transferred to each LCD MODULE.
As shown in Figure 5, be the structural representation of the liquid crystal test control device that the embodiment of the present invention provides, comprise:
Microprocessor 501, for downloading and On-board test image from host computer in advance; And receive the liquid crystal drive interface initialization instruction of host computer transmission;
Liquid crystal display control module 502, for carrying out initialization according to described liquid crystal drive interface initialization instruction to liquid crystal drive interface; And from microprocessor 501, read described test pattern be transferred to LCD MODULE and show.
During concrete enforcement, microprocessor 501 can be downloaded test pattern from host computer and be stored in local internal storage or external memory storage, like this, liquid crystal display control module 502 is after completing liquid crystal drive interface initialization, can from internal storage or external memory storage read test image, due to the restriction of internal storage or external memory storage processing speed, during concrete enforcement, can in advance test pattern be read in buffer memory (such as DDR) from internal storage or external memory storage, then, from DDR, read test image transmitting shows to LCD MODULE again.Wherein, test pattern can be multiple, and like this, each test pattern can all read in buffer memory by LCM test device in advance, then can read each test pattern in buffer memory successively and be transferred to each LCD MODULE.
It should be noted that, above-mentioned LCM test device can be arranged in testing apparatus, be to be understood that, be arranged at by LCM test device in testing apparatus is one of the present invention preferably embodiment, during concrete enforcement, LCM test device can also be arranged on miscellaneous equipment, such as, in newly added equipment.
Those skilled in the art should understand, embodiments of the invention can be provided as method, system or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disk memory, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the process flow diagram of the method for the embodiment of the present invention, equipment (system) and computer program and/or block scheme.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block scheme and/or square frame and process flow diagram and/or block scheme and/or square frame.These computer program instructions can being provided to the processor of multi-purpose computer, special purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computing machine or other programmable data processing device produce device for realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
These computer program instructions also can be loaded in computing machine or other programmable data processing device, make on computing machine or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computing machine or other programmable devices is provided for the step realizing the function of specifying in process flow diagram flow process or multiple flow process and/or block scheme square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a liquid crystal display module test system, is characterized in that, comprises host computer, liquid crystal test control device, driving circuit and LCD testing, wherein:
Described host computer is connected with at least two liquid crystal test control devices; Each liquid crystal test control device, is connected with at least two LCD MODULE by driving circuit, and described liquid crystal test control device is connected by liquid crystal drive interface with between described driving circuit;
Described host computer, for sending liquid crystal drive interface initialization instruction to described liquid crystal test control device;
Described liquid crystal test control device, for after receiving described liquid crystal drive interface initialization instruction, carries out initialization to liquid crystal drive interface; And download test pattern from described host computer, be transferred to each LCD MODULE by described driving circuit and show.
2. the system as claimed in claim 1, is characterized in that,
Described liquid crystal test control device, specifically for being stored in internal storage or external memory storage by the test pattern of download; And after completing the initialization to liquid crystal drive interface, described test pattern is read in buffer memory from internal storage or external memory storage, and from buffer memory, read described test pattern, be transferred to each LCD MODULE by described driving circuit and show.
3. the system as claimed in claim 1, is characterized in that,
Described host computer passes through USB interface or 485 interfaces or network interface and is connected with described liquid crystal test control device.
4. the system as described in claim 1,2 or 3, it is characterized in that, described liquid crystal drive interface comprises micro-control unit MCU interface, serial peripheral equipment SPI interface, RGB rgb interface, Low Voltage Differential Signal LVDS interface, mobile Industry Processor MIPI interface and display port DP interface, low-swing difference signal RSDS interface, Mini-LVDS interface, central processing unit CPU interface, transition minimized differential signaling TMDS interface.
5. a LCD MODULE method of testing, is characterized in that, comprising:
Liquid crystal test control device receives the liquid crystal drive interface initialization instruction that the host computer that is connected with at least two liquid crystal test control devices sends;
Described liquid crystal test control device carries out initialization according to described liquid crystal drive interface initialization instruction to liquid crystal drive interface;
The test pattern of described liquid crystal test control device reading pre-stored is transferred to LCD MODULE and shows, and wherein, described test pattern is that described liquid crystal test control device is downloaded from described host computer and stores; And described liquid crystal test control device is connected with at least two LCD MODULE by driving circuit.
6. method as claimed in claim 5, it is characterized in that, described test pattern is stored in internal storage or external memory storage; And
The test pattern of described liquid crystal test control device reading pre-stored is transferred to LCD MODULE and shows, and specifically comprises:
Described liquid crystal test control device reads described test pattern in buffer memory from described internal storage or external memory storage; And
From buffer memory, read described test pattern be transferred to LCD MODULE and show.
7. the method as described in claim 5 or 6, it is characterized in that, described liquid crystal drive interface comprises micro-control unit MCU interface, serial peripheral equipment SPI interface, RGB rgb interface, Low Voltage Differential Signal LVDS interface, mobile Industry Processor MIPI interface and display port DP interface, low-swing difference signal RSDS interface, Mini-LVDS interface, central processing unit CPU interface, transition minimized differential signaling TMDS interface.
8. a liquid crystal test control device, is characterized in that, comprising:
Microprocessor, for downloading and On-board test image from the host computer be connected with at least two liquid crystal test control devices in advance; And receive the liquid crystal drive interface initialization instruction of host computer transmission;
Liquid crystal display control module, for carrying out initialization according to described liquid crystal drive interface initialization instruction to liquid crystal drive interface; And from described microprocessor, read described test pattern be transferred to LCD MODULE and show;
Wherein, described liquid crystal test control device is connected with at least two LCD MODULE by driving circuit.
9. device as claimed in claim 8, it is characterized in that, described test pattern is stored in internal storage or external memory storage; And
Described liquid crystal display control module, specifically for reading described test pattern in buffer memory from described internal storage or external memory storage; And from buffer memory, read described test pattern be transferred to LCD MODULE and show.
10. a testing apparatus, is characterized in that, comprises the device described in claim 8 or 9.
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| CN201310023303.0A CN103105684B (en) | 2013-01-22 | 2013-01-22 | LCD MODULE method of testing, device, system and testing apparatus |
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| CN201310023303.0A CN103105684B (en) | 2013-01-22 | 2013-01-22 | LCD MODULE method of testing, device, system and testing apparatus |
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| CN103105684B true CN103105684B (en) | 2015-09-16 |
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| CN103323962B (en) * | 2013-06-19 | 2016-01-20 | 无锡博一光电科技有限公司 | The method of testing of the full HD liquid crystal display of MIPI interface |
| CN103475841B (en) * | 2013-09-25 | 2016-08-17 | 武汉精立电子技术有限公司 | LVDS video signal is converted to about 8LANE split screen MIPI video signal method |
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| CN104680960A (en) * | 2015-03-03 | 2015-06-03 | 武汉精测电子技术股份有限公司 | Liquid crystal module test device with USB virtual serial port and Ethernet port and liquid crystal module test method |
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| CN104935859A (en) * | 2015-06-05 | 2015-09-23 | 武汉精测电子技术股份有限公司 | Method and system for converting LVDS video signals into V-BY-ONE video signals suitable for 32 Lane |
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| CN105427773B (en) * | 2015-11-24 | 2018-12-18 | 昆山龙腾光电有限公司 | Liquid crystal display die set aging testing system |
| CN106504687B (en) | 2016-12-16 | 2018-04-03 | 惠科股份有限公司 | Display panel detection method and display panel detection system |
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| CN108845438A (en) * | 2018-04-19 | 2018-11-20 | 苏州华兴源创电子科技有限公司 | LCD panel test device and method |
| CN109147634B (en) * | 2018-10-22 | 2022-05-27 | 苏州华兴源创科技股份有限公司 | Device and method for generating display screen detection signal |
| CN111653248A (en) * | 2020-07-07 | 2020-09-11 | 蚌埠国显科技有限公司 | Self-adaptive driving display device of liquid crystal display module |
| CN112309308B (en) | 2020-11-18 | 2023-07-28 | 京东方科技集团股份有限公司 | Display device, driving method thereof and display system |
| CN112506720A (en) * | 2020-11-20 | 2021-03-16 | 苏州华兴源创科技股份有限公司 | Driving device, system and method for display module test based on FPGA |
| CN114326171B (en) * | 2021-11-30 | 2024-01-26 | 苏州华兴源创科技股份有限公司 | Screen detection method and device |
| CN114758600B (en) * | 2022-06-16 | 2022-09-23 | 肇庆市金鹏实业有限公司 | Liquid crystal display module test system, device and method |
| CN115359744B (en) * | 2022-08-16 | 2023-04-28 | 海的电子科技(苏州)有限公司 | Multi-channel MIPI module point screen method, equipment and storage medium |
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