CN105093589A - Aging testing system for liquid crystal display modules - Google Patents
Aging testing system for liquid crystal display modules Download PDFInfo
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- CN105093589A CN105093589A CN201510524580.9A CN201510524580A CN105093589A CN 105093589 A CN105093589 A CN 105093589A CN 201510524580 A CN201510524580 A CN 201510524580A CN 105093589 A CN105093589 A CN 105093589A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
Abstract
The invention discloses an aging testing system for liquid crystal display modules. The aging testing system comprises a downloader, a main control board and multiple sub-control boards connected with the main control board, and the main control board is connected with the downloader. The downloader is used for receiving testing information of the liquid crystal display modules of multiple types of machines to be tested. The main control board is used for providing the testing information of the liquid crystal display modules of the machines to be tested for the corresponding sub-control boards connected with the liquid crystal display modules of the machines to be tested. Each sub-control board is used for generating a testing image signal, the received testing information of the liquid crystal display modules of the machines to be tested and the testing image signals are provided for the corresponding liquid crystal display modules after first signal conversion is performed so that the corresponding liquid crystal display modules can display corresponding testing images according to the signals obtained after first signal conversion is performed, and then aging testing is achieved for the liquid crystal display modules. The aging testing system can be adapted for testing liquid crystal display modules of different types of machines, and can improve testing efficiency.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly a kind of liquid crystal display module aging testing system.
Background technology
Liquid crystal indicator (LiquidCrystalDisplay, LCD) have that image quality is good, volume is little, lightweight, low driving voltage, low-power consumption, the advantage that radiationless and manufacturing cost is relatively low, occupy an leading position in flat display field at present, liquid crystal indicator is applicable to being applied in desk-top computer, palmtop computer, personal digital assistant (PersonalDigitalAssignment, PDA), portable phone, TV and multiple office automation and audio-visual equipment very much.
Liquid crystal display module is one of key components and parts of liquid crystal indicator, liquid crystal display is before dispatching from the factory, usually need to adopt ageing tester to carry out burn-in test to liquid crystal display module, burn-in test is after at high temperature long-time (such as 100 hours) switch on power to show image to liquid crystal display module thus carries out built-in-self-test to liquid crystal display module, so that the bad point of early detection liquid crystal display module, thus be lifted out kinds of goods matter.Current liquid crystal display module is in burn-in test process, first ageing tester is needed to provide initialization information to carry out initialization to liquid crystal display module to liquid crystal display module, test pattern is provided to show to liquid crystal display module according to time sequence information again, liquid crystal display mode group (namely ensureing display module displays image and normal work) is lighted with this, again in test process, whether the image shown by judgement is normal, thus realizes the burn-in test to liquid crystal display module.At present, the initialization information suitable with each machine liquid crystal display module is not identical, therefore, the liquid crystal display module that an ageing tester lights different machine cannot be shared, namely, after the machine of liquid crystal display module changes, need the initialization information of burning ageing tester again and carry out the above-mentioned process lighting liquid crystal display module.Existing one is used for lighting MIPI (MobileIndustryProcessorInterface, mobile Industry Processor) interface liquid crystal display module ageing tester as shown in Figure 1, ageing tester shown in Fig. 1 is the multiple MIPI signal plates 10 be arranged in ageing test box, each MIPI signal plate 10 is arranged MCU12 and interface 13.And the machine of each liquid crystal display module 11 is all not identical, each MIPI signal plate 10 is all electrical connected a kind of liquid crystal display module 11 of machine.Each MIPI signal plate 10 all independently operates, when needing the liquid crystal display module 11 lighting some machines, by interface 13, the initialization information of corresponding liquid crystal display module 11 and time sequence information are sent to the MCU12 of MIPI signal plate 10, then corresponding liquid crystal display module 11 is sent to after initialization information and time sequence information being converted into MIPI signal by MCU12, to light corresponding liquid crystal display module 11, then judge that whether shown image is normal.There is following problem in above-mentioned ageing tester: because different machine liquid crystal display module cannot share same ageing tester, therefore, when liquid crystal display module machine changes, above-mentioned proving installation needs by modes such as burnings corresponding MIPI signal plate 10 burning initialization information and time sequence information, when liquid crystal display module quantity is more, need the workload of burning large, so not only cause expending of a large amount of time and human and material resources, and efficiency is very low, cost is higher.In addition, when there being some liquid crystal display modules 11 not light, then need again to operate MIPI signal plate and above-mentioned lighting operation process is carried out to this liquid crystal display module 11, due to aforesaid operations process more complicated, and operation MIPI signal plate 10 to be carried out in ageing test box, therefore cause operation extremely inconvenience.
Summary of the invention
The invention provides a kind of liquid crystal display module aging testing system, be applicable to the liquid crystal display module of different machine, and efficiency is higher.
Described technical scheme is as follows:
Embodiments provide a kind of liquid crystal display module aging testing system, be suitable for the liquid crystal display module testing different machine, it comprises: downloader, the master control board be connected with described downloader, the multiple sub-control panel that is connected with described master control board, wherein, described downloader, for receiving the detecting information of the liquid crystal display module of multiple machine to be measured, and the detecting information of the liquid crystal display module of the machine multiple to be measured received is supplied to described master control board, described master control board, be connected with described downloader and every sub-control panel, for receiving the detecting information of the liquid crystal display module of the machine multiple to be measured that described downloader provides, and the detecting information of the liquid crystal display module of the machine multiple to be measured received is supplied to respectively the corresponding sub-control panel be connected to the liquid crystal display module of multiple machine to be measured, each sub-control panel, be connected with described master control board and multiple liquid crystal display module, during for receiving the liquid crystal display module detecting information of the machine corresponding to be measured that described master control board provides, generate test image signal, and be supplied to corresponding liquid crystal display module after the detecting information of the liquid crystal display module of the machine corresponding to be measured received and test image signal are carried out the first signal conversion, with the test pattern making corresponding liquid crystal display module corresponding according to the Signal aspects after the first signal conversion, to light corresponding liquid crystal display module, thus the burn-in test realized liquid crystal display module.
In one embodiment of the invention, downloader is MCU, and described signal after the first signal is changed is MIPI signal.
In one embodiment of the invention, described detecting information comprises control command, initializing signal and time sequence information, described control command comprise the detecting information of the liquid crystal display module of each machine to be measured is mapped to respectively corresponding liquid crystal display module order, control liquid crystal display module and carry out initialized order according to initialization information, described initialization information comprises gamma electric voltage, common electric voltage, and described time sequence information comprises horizontal-drive signal, vertical synchronizing signal, clock signal and enable signal.
In one embodiment of the invention, described master control board comprises the first controller, input interface, second controller, output interface; Wherein, described first controller, be connected with described input interface and described second controller, it comprises the signal output part and control end that are connected with described second controller, described first controller is used for the detecting information of the liquid crystal display module being received the machine multiple to be measured that described downloader provides by described input interface, and the detecting information of the liquid crystal display module of the machine multiple to be measured received is supplied to described second controller by described signal output part and described control end; Described second controller, be connected with described output interface with described first controller, it comprises multiple output channel, described each output channel is connected with an output interface, the detecting information of the liquid crystal display module of multiple to be measured machine of described second controller for receiving described first controller and providing, according to the control command in detecting information, the detecting information of the liquid crystal display module of the machine multiple to be measured received is mapped to corresponding output channel respectively, and is supplied to corresponding output interface by corresponding output channel.
In one embodiment of the invention, described first controller, also for when described control end exports high level, control command in the detecting information of the liquid crystal display module of multiple machine to be measured is supplied to described second controller by described signal output part, when described control end output low level, the initialization information in the detecting information of the liquid crystal display module of multiple machine to be measured and time sequence information are supplied to described second controller by described signal output part.
In one embodiment of the invention, described first controller is MCU, and described second controller is FPGA.
In one embodiment of the invention, described master control board also comprises switch, and described switch is connected with described first controller, and described switch is used for sending described control command to described first controller.
In one embodiment of the invention, described input interface and described output interface are serial ports, and described first controller is also supplied to described second controller by described signal output part and described control end after the detecting information of liquid crystal display module of the machine multiple to be measured received is encoded to serial form.
In one embodiment of the invention, every sub-control panel comprise be connected with described output interface input port, the 3rd controller, the 4th controller and signal converter, wherein, described 3rd controller, with described input port, described 4th controller and described signal converter are connected, it comprises the first output terminal be connected with described 4th controller and the second output terminal be connected with described signal converter, detecting information for the liquid crystal display module of machine corresponding to be measured described master control board provided is decoded, and the time sequence information in decoded detecting information is supplied to described 4th controller by described first output terminal, and be supplied to described signal converter by described second output terminal after the control command in decoded detecting information and initialization information are carried out secondary signal conversion, described 4th controller, is connected with described 3rd controller and described signal converter, and for generating test image signal, the time sequence information provide described 3rd controller and test image signal are supplied to described signal converter after carrying out the 3rd signal conversion, described signal converter, be connected with described 3rd controller and described 4th controller, comprise the delivery outlet be connected with liquid crystal display module, after carrying out the first signal conversion for the control command that provided by described 4th controller and initialization information, corresponding liquid crystal display module is supplied to by delivery outlet, to carry out initialization to corresponding liquid crystal display module, the time sequence information that described 4th controller is provided and test image signal, after carrying out the first signal conversion, corresponding liquid crystal display module is supplied to by delivery outlet, corresponding test pattern is shown according to the time sequence information after the first signal conversion and test image signal to make corresponding liquid crystal display module, to light corresponding liquid crystal display module, thus the burn-in test realized liquid crystal display module.
In one embodiment of the invention, described master control board also comprises the first level translator, and described every sub-control panel also comprises second electrical level converter; Wherein, described first level translator, be connected with described second controller and described output interface, by being supplied to the described second electrical level converter of described sub-control panel behind the input port of described output interface and described sub-control panel after being converted to high level for the detecting information of the liquid crystal display module by the machine corresponding to be measured received; Second electrical level converter in described every sub-control panel, be connected with described input port and described 3rd controller, for being received the detecting information of the liquid crystal display module of the machine corresponding to be measured that described master control board provides by described input port, and be supplied to described 3rd controller after the detecting information of the liquid crystal display module of the machine corresponding to be measured received is converted to low level.
In one embodiment of the invention, described secondary signal conversion is converted to SPI signal, and described 3rd signal conversion is converted to TTL signal.
In one embodiment of the invention, described 3rd controller is MCU, and described 4th controller is FPGA.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is:
The detecting information of the liquid crystal display module of multiple machine to be measured is received by downloader.The detecting information of the liquid crystal display module of multiple machine to be measured is supplied to the corresponding sub-control panel be connected to the liquid crystal display module of multiple machine to be measured by master control board respectively.When each sub-control panel receives the liquid crystal display module detecting information of the machine corresponding to be measured that master control board provides, generate test image signal, and (being such as converted to MIPI signal) is supplied to corresponding liquid crystal display module after the detecting information of the liquid crystal display module of the machine corresponding to be measured received and test image signal being carried out the first signal conversion, with the test pattern making corresponding liquid crystal display module corresponding according to the Signal aspects after the first signal conversion, to light corresponding liquid crystal display module, thus realize the burn-in test to liquid crystal display module.When the liquid crystal display module of the embodiment of the present invention to different machine carries out burn-in test, only need the detecting information that different machine is provided to master control board, then the detecting information of the liquid crystal display module of multiple machine to be measured will be supplied to the corresponding sub-control panel be connected to the liquid crystal display module of multiple machine to be measured by master control board respectively, thus the burn-in test realized liquid crystal display module, easy to operate, flow process is simple, and different machine liquid crystal display module can share same test macro, when avoiding switching machine in prior art, each proving installation all carries out the trouble of burning program, save and switch the machine time, thus provide cost savings, improve testing efficiency.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to technological means of the present invention can be better understood, and can be implemented according to the content of instructions, and can become apparent to allow above and other object of the present invention, feature and advantage, below especially exemplified by preferred embodiment, and coordinate accompanying drawing, be described in detail as follows.
Accompanying drawing explanation
Fig. 1 is the main frame block diagram of existing a kind of liquid crystal display module ageing tester;
Fig. 2 is the main frame block diagram of the liquid crystal display module aging testing system that first embodiment of the invention provides;
Fig. 3 is the main frame block diagram of the liquid crystal display module aging testing system that second embodiment of the invention provides;
Fig. 4 is the main frame block diagram of the liquid crystal display module aging testing system that third embodiment of the invention provides.
Embodiment
For further setting forth the present invention for the technological means reaching predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to its embodiment of liquid crystal display module aging testing system proposed according to the present invention, structure, feature and effect, be described in detail as follows.
Aforementioned and other technology contents, Characteristic for the present invention, can clearly present in following cooperation describes in detail with reference to graphic preferred embodiment.By the explanation of embodiment, when can to the present invention for the technological means reaching predetermined object and take and effect be able to more deeply and concrete understanding, however institute's accompanying drawings be only to provide with reference to and the use of explanation, be not used for being limited the present invention.
Fig. 2 is the main frame block diagram of the liquid crystal display module aging testing system that first embodiment of the invention provides.Please refer to Fig. 2, the liquid crystal display module aging testing system of the present embodiment is suitable for the liquid crystal display module 109 testing different machine (such as different model), please refer to Fig. 2, described liquid crystal display module aging testing system comprises: downloader 101, the master control board 103 be connected with downloader 101, the multiple sub-control panel 105 that is connected with master control board 103.Every sub-control panel 105 is connected multiple liquid crystal display module 109 needing to carry out the identical machine of burn-in test, and arbitrary sub-control panel 105 the machine of multiple liquid crystal display modules 109 that is connected identical, and with other sub-control panel 105 the machine of liquid crystal display module 109 that is connected not identical.Wherein, master control board 103 can be arranged at ageing test box outside, and sub-control panel 105 and liquid crystal display module 109 can be arranged in test box, is in the test environment of high temperature and high humility in test box, to carry out burn-in test to liquid crystal display module 109.
Particularly, downloader 101, be connected with master control board 103, for receiving the detecting information (such as can comprise control command, the initialization information of liquid crystal display module and time sequence information) of the liquid crystal display module of multiple machine to be measured, and the detecting information of the liquid crystal display module of the machine multiple to be measured received is supplied to master control board 103.
Wherein, preferably, downloader 101 can also be connected with computer 107, for receiving the detecting information (such as can comprise control command, the initialization information of liquid crystal display module and time sequence information) of the liquid crystal display module of the machine multiple to be measured that computer 107 provides, and the detecting information of the liquid crystal display module of the machine multiple to be measured received is supplied to master control board 103.Wherein, computer 107 can show detecting information inputting interface, user just can pass through the input equipment such as keyboard, mouse input test information on inputting interface.
In the present embodiment, downloader 101 can be MCU (MicroControlUnit, micro-control unit) etc.Detecting information such as can comprise control command, the initialization information of liquid crystal display module and sequential (Timing) information, control command can comprise the detecting information of the liquid crystal display module of each machine to be measured is mapped to respectively corresponding liquid crystal display module order, control liquid crystal display module and carry out initialized order etc. according to initialization information.Initialization information can comprise gamma electric voltage, the parameters such as common electric voltage.Time sequence information can comprise horizontal-drive signal (H-SYNC), vertical synchronizing signal (V-SYNC), clock signal (DOTCLOCK), enable signal (DE) etc.It is such as be burnt in master control board 103 by the detecting information of the liquid crystal display module of multiple machine to be measured that the detecting information of the liquid crystal display module of the machine multiple to be measured received is supplied to master control board 103 by downloader 101, can according to the detecting information of multiple machine burnings difference machines to be measured, this test macro is made to be applicable to multiple product, expand the scope of application, and then make the liquid crystal display module of various machine without the need to arranging special proving installation, and then reduce cost.
Master control board 103, be connected with downloader 101 and every sub-control panel 105, for receiving the detecting information of the liquid crystal display module of the machine multiple to be measured that downloader 101 provides, and the detecting information (such as control command, initialization information and time sequence information) of the liquid crystal display module of the machine multiple to be measured received is supplied to the corresponding sub-control panel 105 be connected to the liquid crystal display module of multiple machine to be measured respectively.
Each sub-control panel 105, be connected with master control board 103 and multiple liquid crystal display module 109, for when receiving the liquid crystal display module detecting information of the machine corresponding to be measured that master control board 103 provides, generate test image signal, and (being such as converted to MIPI signal) is supplied to corresponding liquid crystal display module 109 after the detecting information of the liquid crystal display module of the machine corresponding to be measured received and test image signal being carried out the first signal conversion, with the test pattern making corresponding liquid crystal display module 109 corresponding according to signal (the such as MIPI signal) display after the first signal conversion, to light corresponding liquid crystal display module 109, thus the burn-in test realized liquid crystal display module.
Wherein, in burn-in test process, by sub-control panel or other testing apparatus, (such as liquid crystal display module lights 100 hours) also judges that whether the image shown is normal, if normal, then be judged as that liquid crystal display module to be measured is qualified, if abnormal, then be judged as that liquid crystal display module to be measured is defective, thus realize the burn-in test to liquid crystal display module.Wherein, first signal conversion is converted to MIPI signal, which kind of signal first signal conversion is specifically converted to, and is to be determined by the interface of display module, and namely the first signal conversion is converted to the signal (such as MIPI signal etc.) suitable with corresponding liquid crystal display module.In other embodiments, the signal of other form can be also converted to according to the interface of display module, as long as the signal after conversion can be suitable with the interface of display module.
Preferably, each sub-control panel 105, corresponding liquid crystal display module 109 is supplied to after also carrying out signal conversion for the control command in the detecting information of the liquid crystal display module by the machine corresponding to be measured received and initialization information, under the control of the control command after the first signal conversion, the initialization information after conversion is adopted to carry out initialization to corresponding liquid crystal display module 109, and generate test image signal, corresponding liquid crystal display module 109 is supplied to after time sequence information in the detecting information of the liquid crystal display module of the machine corresponding to be measured received and test image signal are carried out the first signal conversion, liquid crystal display module 109 is made to show corresponding test pattern under the control of the time sequence information after the first signal conversion, to light corresponding liquid crystal display module 109.
In the embodiment of the present invention, when carrying out burn-in test to the liquid crystal display module of different machine, the detecting information of the liquid crystal display module of multiple machine to be measured is only needed to be burnt in master control board 103, can according to the detecting information of multiple machine burnings difference machines to be measured, this test macro is made to be applicable to multiple product, expand the scope of application, and then make the liquid crystal display module of various machine without the need to arranging special proving installation, and then reduce cost.
The liquid crystal display module aging testing system that the present embodiment provides, receives the detecting information of the liquid crystal display module of multiple machine to be measured by downloader 101.The detecting information of the liquid crystal display module of multiple machine to be measured is supplied to the corresponding sub-control panel 105 be connected to the liquid crystal display module of multiple machine to be measured by master control board 103 respectively.When each sub-control panel 105 receives the liquid crystal display module detecting information of the machine corresponding to be measured that master control board 103 provides, generate test image signal, and (being such as converted to MIPI signal) is supplied to corresponding liquid crystal display module 109 after the detecting information of the liquid crystal display module of the machine corresponding to be measured received and test image signal being carried out the first signal conversion, with the test pattern making corresponding liquid crystal display module 109 corresponding according to the Signal aspects after the first signal conversion, to light corresponding liquid crystal display module 109, thus the burn-in test realized liquid crystal display module.When the liquid crystal display module of the embodiment of the present invention to different machine carries out burn-in test, only need the detecting information that different machine is provided to master control board 103, then the detecting information of the liquid crystal display module of multiple machine to be measured will be supplied to the corresponding sub-control panel 105 be connected to the liquid crystal display module of multiple machine to be measured by master control board 103 respectively, thus the burn-in test realized liquid crystal display module, easy to operate, flow process is simple, and different machine liquid crystal display module can share same test macro, when avoiding switching machine in prior art, each proving installation all carries out the trouble of burning program, save and switch the machine time, thus provide cost savings, improve testing efficiency.
Second embodiment
Please refer to Fig. 3, Fig. 3 shows the main frame block diagram of the liquid crystal display module aging testing system that second embodiment of the invention provides.The structure of the module of liquid crystal display shown in Fig. 3 aging testing system is similar to the structure shown in Fig. 2, and its difference is, Fig. 3 is the further refined structure of master control board 103 and sub-control panel 105.
Particularly, master control board 103 can comprise the first controller 1031, input interface 1032, second controller (such as FPGA, FieldProgrammableGateArray, field programmable gate array) 1033, output interface 1035.Preferably, sub-control panel 105 can comprise be connected with output interface 1035 input port 1050, the 3rd controller 1053, the 4th controller (such as FPGA) 1055 and signal converter 1057.
First controller 1031, be connected with input interface 1032 and second controller 1033, it comprises the signal output part TXD and control end Data/Com that are connected with second controller 1033, first controller 1031 is for receiving the detecting information of the liquid crystal display module of the machine multiple to be measured that downloader 101 provides by input interface 1032, and by detecting information (the such as control command of the liquid crystal display module of the machine multiple to be measured of reception, initialization information and time sequence information) be supplied to second controller (such as FPGA) 1033 by signal output part TXD and control end Data/Com.
Preferably, first controller 1031 is also for when control end Data/Com exports high level, control command in the detecting information of the liquid crystal display module of multiple machine to be measured is supplied to second controller 1033 by signal output part TXD, when control end Data/Com output low level, the initialization information in the detecting information of the liquid crystal display module of multiple machine to be measured and time sequence information are supplied to second controller 1033 by signal output part TXD.Wherein, the first controller 1031 can be MCU (MicroControlUnit, micro-control unit) etc., and second controller can be FPGA.
Preferably, input interface 1032 and output interface 1035 can be serial ports, and described first controller 1031 is also supplied to described second controller 1033 by TXD and control end Data/Com after the detecting information of liquid crystal display module of the machine multiple to be measured received is encoded to serial form.
Second controller (such as FPGA) 1033, be connected with the first controller 1031 and output interface 1035, it comprises multiple output channel RXD1 ~ RXDn, each output channel RXD1 ~ RXDn is connected with an output interface 1035, the detecting information of the liquid crystal display module of multiple to be measured machine of second controller 1033 for receiving the first controller 1031 and providing, according to the control command in detecting information, the detecting information of the liquid crystal display module of the machine multiple to be measured received is mapped to corresponding output channel RXD1 ~ RXDn respectively, and be supplied to corresponding output interface 1035 by corresponding output channel RXD1 ~ RXDn.Such as when control command is when the detecting information of the liquid crystal display module of multiple machine to be measured being mapped to respectively corresponding all liquid crystal display modules, then the detecting information of the liquid crystal display module of multiple machine to be measured is mapped to corresponding all output channel RXD1 ~ RXDn by second controller 1033 respectively, second controller 1033 like this needs the corresponding relation prestoring corresponding liquid crystal display module and all output channel RXD1 ~ RXDn, if control command is when the detecting information of the liquid crystal display module of 2 machines to be measured is mapped to the liquid crystal display module of No.1 and No.2 machine respectively, if liquid crystal display module machine No.1 and No.2 respective channel RXD1 and RXD2 in the corresponding liquid crystal display module that second controller 1033 prestores and the corresponding relation of all output channel RXD1 ~ RXDn, then the detecting information of the liquid crystal display module of machine to be measured for No.1 and No.2 is mapped to passage RXD1 and RXD2 by second controller 1033.That is, when the detecting information of the liquid crystal display module of multiple machine to be measured is mapped to corresponding all output channel RXD1 ~ RXDn by second controller 1033 respectively, now each channel reception is to the detecting information of the liquid crystal display module of machine to be measured corresponding to passage therewith, when control command is when the detecting information of the liquid crystal display module of a machine to be measured is mapped to corresponding independent a certain passage, when then the detecting information of the liquid crystal display module of a machine to be measured is mapped to this output channel by second controller 1033, only has this channel reception to the detecting information of the liquid crystal display module of machine to be measured corresponding to passage therewith, other passage no signal.
Be described for a sub-control panel 105, the 3rd controller (being such as MCU) 1053 in every sub-control panel 105, with input port 1050, 4th controller 1055 and signal converter 1057 are connected, it comprises the first output terminal TD-F be connected with the 4th controller 1055 and the second output terminal SP be connected with signal converter 1057, detecting information for the liquid crystal display module of machine corresponding to be measured master control board 103 provided carries out decode (such as by the data convert of serial form), and the time sequence information in decoded detecting information is supplied to the 4th controller 1055 by the first output terminal TD-F, and (being such as converted to SPI signal) is supplied to signal converter 1057 by the second output terminal SP after the control command in decoded detecting information and initialization information being carried out secondary signal conversion.
4th controller (being such as FPGA) 1055, be connected with the 3rd controller 1053 and signal converter 1057, for generating test image signal, after the time sequence information provide the 3rd controller 1053 and test image signal carry out the 3rd signal conversion, (being such as converted to TTL (Transistortransistorlogic, transistor-transistor logic) signal) is supplied to signal converter 1057.
Signal converter (being such as MIPI converter) 1057, be connected with the 3rd controller 1053 and the 4th controller 1055, comprise the delivery outlet MIP be connected with liquid crystal display module, (being such as converted to MIPI signal) after the first signal conversion is carried out for the control command that provided by the 4th controller 1055 and initialization information, corresponding liquid crystal display module is supplied to by delivery outlet MIP (such as can in the low-speed mode), to carry out initialization to corresponding liquid crystal display module, the time sequence information that 4th controller 1055 is provided and test image signal, carry out the first signal conversion rear (being such as converted to MIPI signal), corresponding liquid crystal display module is supplied to by delivery outlet MIP (such as can in high speed mode), corresponding test pattern is shown according to the time sequence information after the first signal conversion and test image signal to make corresponding liquid crystal display module 109, to light corresponding liquid crystal display module 109, thus the burn-in test realized liquid crystal display module.In burn-in test process, (such as liquid crystal display module lights 100 hours) judges that whether the image shown is normal, if normal, then be judged as that liquid crystal display module to be measured is qualified, if abnormal, then be judged as that liquid crystal display module to be measured is defective, thus realize the burn-in test to liquid crystal display module.
Wherein, the 3rd controller is MCU, and the 4th controller is FPGA.Signal converter 1057 can be MIPI converter.Secondary signal conversion is converted to SPI signal, and described 3rd signal conversion is converted to TTL signal.Which kind of signal secondary signal conversion and the conversion of the 3rd signal are specifically converted to, determined by the interface of signal converter 1057, namely second and the 3rd signal conversion be converted to the signal (such as TTL signal, SPI etc.) suitable with corresponding signal converter 1057.In other embodiments, also can be converted to the signal of other form according to the interface of signal converter 1057, as long as the signal after conversion can be suitable with the interface of signal converter 1057.
Be 3 kinds with liquid crystal display module machine (such as model) below, introduce the course of work of liquid crystal display module aging testing system in detail:
When needing to carry out burn-in test to the liquid crystal display module of 3 machines, first controller 1031 of master control board 103 will receive the detecting information of the liquid crystal display module of 3 machines to be measured that downloader 101 provides by input interface 1032, and the detecting information of the liquid crystal display module of 3 machines to be measured received is supplied to second controller 1033 by signal output part TXD and control end Data/Com.The detecting information of the liquid crystal display module of the machine multiple to be measured received is mapped to corresponding output channel RXD1, RXD2, RXD3 according to the control command in detecting information by second controller 1033 respectively, and is supplied to 3 sub-control panels 105 by corresponding output channel RXD1, RXD2, RXD3, corresponding 3 output interfaces 1035.The detecting information of the liquid crystal display module of the machine corresponding to be measured that master control board 103 provides by the 3rd controller 1053 in every sub-control panel 105 carries out decode (such as by the data convert of serial form), and the time sequence information in decoded detecting information is supplied to the 4th controller 1055 by the first output terminal TD-F, and after the control command in decoded detecting information and initialization information being carried out secondary signal conversion, (being such as converted to SPI signal) is supplied to signal converter 1057 by the second output terminal SP.4th controller 1055, generates test image signal, and after the time sequence information provide the 3rd controller 1053 and test image signal carry out the 3rd signal conversion, (being such as converted to TTL signal) is supplied to signal converter 1057.Signal converter (being such as MIPI converter) 1057, the control command provide the 4th controller 1055 and initialization information carry out the first signal conversion rear (being such as converted to MIPI signal), corresponding liquid crystal display module is supplied to by delivery outlet MIP, to carry out initialization to corresponding liquid crystal display module, the time sequence information that 4th controller 1055 is provided and test image signal, carry out the first signal conversion rear (being such as converted to MIPI signal), corresponding liquid crystal display module is supplied to by delivery outlet MIP, corresponding test pattern is shown according to the time sequence information after the first signal conversion and test image signal to make corresponding liquid crystal display module 109, to light corresponding liquid crystal display module 109, thus the burn-in test realized liquid crystal display module.
The liquid crystal display module aging testing system that the present embodiment provides, also by under the first controller 1031 of master control board 103 and the cooperatively interacting of second controller 1033, the detecting information of the liquid crystal display module of multiple machine to be measured is mapped to corresponding output channel RXD1 ~ RXDn respectively, and is supplied to corresponding sub-control panel 105 by corresponding output channel RXD1 ~ RXDn.Sub-control panel 105, under the cooperatively interacting of the 3rd controller 1053, the 4th controller 1055 and signal converter 1057, lights corresponding liquid crystal display module 109, thus realizes the burn-in test to liquid crystal display module.The liquid crystal display module of the different machine of the embodiment of the present invention can share same liquid crystal display module ageing tester, practical, and the structure of master control board and sub-control panel is simple, cost is lower.
3rd embodiment
Please refer to Fig. 4, Fig. 4 shows the main frame block diagram of the liquid crystal display module aging testing system that third embodiment of the invention provides.The structure of the module of liquid crystal display shown in Fig. 4 aging testing system is similar to the structure shown in Fig. 3, and its difference is, the master control board 103 of the liquid crystal display module aging testing system of Fig. 4 can also comprise the first level translator 1035 and switch 1037.Every sub-control panel 105 can also comprise second electrical level converter 1051.
Wherein, first level translator 1035, be connected with second controller 1033 and output interface 1036, after carrying out level conversion for the detecting information of the liquid crystal display module by the machine corresponding to be measured received, (being such as converted to high level) is by being supplied to the second electrical level converter 1051 of sub-control panel 105 behind the input port 1050 of output interface UART and sub-control panel 105.
Second electrical level converter 1051, be connected with input port 1050 and the 3rd controller 1053, for being received the detecting information of the liquid crystal display module of the machine corresponding to be measured that master control board 103 provides by input port 1050, and be supplied to the 3rd controller 1053 after the detecting information of the liquid crystal display module of the machine corresponding to be measured received is carried out level conversion (being such as converted to low level).
Wherein, first level translator 1035 and second electrical level converter 1051 can be such as RS232, it is serial ports transmitting-receiving driving, function increases driving force, first level translator 1035 is in order to make detecting information transmission range longer, signal can not be decayed, namely guarantee detecting information long-distance transmissions can give sub-control panel 105 from master control board 103, and therefore the first level translator 1035 is supplied to sub-control panel 105 after the detecting information of the liquid crystal display module of the machine corresponding to be measured received is converted to high level.The detecting information of the liquid crystal display module of the machine corresponding to be measured received is converted to low level by the second electrical level converter 1051 of sub-control panel 105 again, reduces by detecting information.
Preferably, described master control board 103 can also comprise: switch 1037, and switch 1037 is connected with the first controller 1031, for sending control command to the first controller 1031.Such as control command can comprise the detecting information of the liquid crystal display module of each machine to be measured is mapped to respectively corresponding liquid crystal display module order, control liquid crystal display module and carry out initialized order etc. according to initialization information.Wherein, switch can be button, tumbler switch etc.
The liquid crystal display module aging testing system that the present embodiment provides, by being supplied to the second electrical level converter 1051 of sub-control panel 105 behind the input port 1050 of output interface UART and sub-control panel 105 after being also converted to high level by the first level translator 1035 by the detecting information of the liquid crystal display module of the machine corresponding to be measured received.Second electrical level converter 1051 receives the detecting information of the liquid crystal display module of the machine corresponding to be measured that master control board 103 provides by input port 1050, and be supplied to the 3rd controller 1053 after the detecting information of the liquid crystal display module of the machine corresponding to be measured received is converted to low level, thus can ensure that detecting information transmission range is longer, signal can not be decayed, realize detecting information from master control board 103 can long-distance transmissions give sub-control panel 105.
Also can send control command to the first controller 1031 by switch 1037, to control liquid crystal display module burn-in test, if when a certain liquid crystal display module is not lighted, send control command by switch can control separately to retransfer detecting information to this liquid crystal display module, thus make to control conveniently, real-time.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be do not depart from technical solution of the present invention content, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (12)
1. a liquid crystal display module aging testing system, be suitable for the liquid crystal display module testing different machine, it comprises: downloader, the master control board be connected with described downloader, the multiple sub-control panel that is connected with described master control board, wherein,
Described downloader, for receiving the detecting information of the liquid crystal display module of multiple machine to be measured, and is supplied to described master control board by the detecting information of the liquid crystal display module of the machine multiple to be measured received;
Described master control board, be connected with described downloader and every sub-control panel, for receiving the detecting information of the liquid crystal display module of the machine multiple to be measured that described downloader provides, and the detecting information of the liquid crystal display module of the machine multiple to be measured received is supplied to respectively the corresponding sub-control panel be connected to the liquid crystal display module of multiple machine to be measured;
Each sub-control panel, be connected with described master control board and multiple liquid crystal display module, for when receiving the liquid crystal display module detecting information of the machine corresponding to be measured that described master control board provides, generate test image signal, and be supplied to corresponding liquid crystal display module after the detecting information of the liquid crystal display module of the machine corresponding to be measured received and test image signal are carried out the first signal conversion, with the test pattern making corresponding liquid crystal display module corresponding according to the Signal aspects after the first signal conversion, to light corresponding liquid crystal display module, thus the burn-in test realized liquid crystal display module.
2. liquid crystal display module aging testing system according to claim 1, is characterized in that, described downloader is MCU, and described signal after the first signal is changed is MIPI signal.
3. liquid crystal display module aging testing system according to claim 1, it is characterized in that, described detecting information comprises control command, initializing signal and time sequence information, described control command comprise the detecting information of the liquid crystal display module of each machine to be measured is mapped to respectively corresponding liquid crystal display module order, control liquid crystal display module and carry out initialized order according to initialization information, described initialization information comprises gamma electric voltage, common electric voltage, and described time sequence information comprises horizontal-drive signal, vertical synchronizing signal, clock signal and enable signal.
4. liquid crystal display module aging testing system according to claim 1, it is characterized in that, described master control board comprises the first controller, input interface, second controller, output interface; Wherein,
Described first controller, be connected with described input interface and described second controller, it comprises the signal output part and control end that are connected with described second controller, described first controller is used for the detecting information of the liquid crystal display module being received the machine multiple to be measured that described downloader provides by described input interface, and the detecting information of the liquid crystal display module of the machine multiple to be measured received is supplied to described second controller by described signal output part and described control end;
Described second controller, be connected with described output interface with described first controller, it comprises multiple output channel, described each output channel is connected with an output interface, the detecting information of the liquid crystal display module of multiple to be measured machine of described second controller for receiving described first controller and providing, according to the control command in detecting information, the detecting information of the liquid crystal display module of the machine multiple to be measured received is mapped to corresponding output channel respectively, and is supplied to corresponding output interface by corresponding output channel.
5. liquid crystal display module aging testing system according to claim 4, it is characterized in that, described first controller, also for when described control end exports high level, control command in the detecting information of the liquid crystal display module of multiple machine to be measured is supplied to described second controller by described signal output part, when described control end output low level, the initialization information in the detecting information of the liquid crystal display module of multiple machine to be measured and time sequence information are supplied to described second controller by described signal output part.
6. liquid crystal display module aging testing system according to claim 4, is characterized in that, described first controller is MCU, and described second controller is FPGA.
7. liquid crystal display module aging testing system according to claim 4, it is characterized in that, described master control board also comprises switch, and described switch is connected with described first controller, and described switch is used for sending described control command to described first controller.
8. liquid crystal display module aging testing system according to claim 4, it is characterized in that, described input interface and described output interface are serial ports, and described first controller is also supplied to described second controller by described signal output part and described control end after the detecting information of liquid crystal display module of the machine multiple to be measured received is encoded to serial form.
9. liquid crystal display module aging testing system according to claim 8, is characterized in that, every sub-control panel comprise be connected with described output interface input port, the 3rd controller, the 4th controller and signal converter; Wherein,
Described 3rd controller, with described input port, described 4th controller and described signal converter are connected, it comprises the first output terminal be connected with described 4th controller and the second output terminal be connected with described signal converter, detecting information for the liquid crystal display module of machine corresponding to be measured described master control board provided is decoded, and the time sequence information in decoded detecting information is supplied to described 4th controller by described first output terminal, and be supplied to described signal converter by described second output terminal after the control command in decoded detecting information and initialization information are carried out secondary signal conversion,
Described 4th controller, is connected with described 3rd controller and described signal converter, and for generating test image signal, the time sequence information provide described 3rd controller and test image signal are supplied to described signal converter after carrying out the 3rd signal conversion;
Described signal converter, be connected with described 3rd controller and described 4th controller, comprise the delivery outlet be connected with liquid crystal display module, after carrying out the first signal conversion for the control command that provided by described 4th controller and initialization information, corresponding liquid crystal display module is supplied to by delivery outlet, to carry out initialization to corresponding liquid crystal display module, the time sequence information that described 4th controller is provided and test image signal, after carrying out the first signal conversion, corresponding liquid crystal display module is supplied to by delivery outlet, corresponding test pattern is shown according to the time sequence information after the first signal conversion and test image signal to make corresponding liquid crystal display module, to light corresponding liquid crystal display module, thus the burn-in test realized liquid crystal display module.
10. liquid crystal display module aging testing system according to claim 9, it is characterized in that, described master control board also comprises the first level translator, and described every sub-control panel also comprises second electrical level converter; Wherein,
Described first level translator, be connected with described second controller and described output interface, by being supplied to the described second electrical level converter of described sub-control panel behind the input port of described output interface and described sub-control panel after being converted to high level for the detecting information of the liquid crystal display module by the machine corresponding to be measured received;
Second electrical level converter in described every sub-control panel, be connected with described input port and described 3rd controller, for being received the detecting information of the liquid crystal display module of the machine corresponding to be measured that described master control board provides by described input port, and be supplied to described 3rd controller after the detecting information of the liquid crystal display module of the machine corresponding to be measured received is converted to low level.
11. liquid crystal display module aging testing systems according to claim 9, is characterized in that, described secondary signal conversion is converted to SPI signal, and described 3rd signal conversion is converted to TTL signal.
12. liquid crystal display module aging testing systems according to claim 9, it is characterized in that, described 3rd controller is MCU, described 4th controller is FPGA.
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