CN210270428U - Liquid crystal display device test system - Google Patents
Liquid crystal display device test system Download PDFInfo
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- CN210270428U CN210270428U CN201921240860.7U CN201921240860U CN210270428U CN 210270428 U CN210270428 U CN 210270428U CN 201921240860 U CN201921240860 U CN 201921240860U CN 210270428 U CN210270428 U CN 210270428U
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Abstract
The utility model discloses a liquid crystal display device test system, including testing arrangement, video signal source and liquid crystal display device, be equipped with first interface and second interface on the liquid crystal display device, be equipped with third interface and fourth interface on the testing arrangement, and testing arrangement is including testing special module, signal processing system and power module, video signal source passes through the third interface and is connected with testing arrangement, and video signal source is connected with liquid crystal display device through first interface, and testing arrangement matches through fourth interface and second interface and is connected with liquid crystal display device and is used for transmitting the video test signal after signal processing system handles for liquid crystal display device, power module is connected with signal processing system and is used for the power supply of signal processing system. The utility model discloses can have characteristics easy and simple to handle, that efficiency of software testing is high and low cost according to the liquid crystal disply device who is applicable to different occasions.
Description
Technical Field
The utility model relates to liquid crystal display tests technical field, especially relates to a liquid crystal display device test system.
Background
Liquid crystal display devices have been widely used in various fields such as industrial display and consumer display, because of their advantages such as light weight, small size, low power consumption, and small size, etc., which gradually replace conventional CRT kinescope devices. The liquid crystal display device mainly comprises a liquid crystal display panel and a liquid crystal driving circuit, wherein the liquid crystal display panel comprises a liquid crystal screen, an LED backlight module, a signal interface module and the like, and the liquid crystal driving circuit comprises a signal processing circuit, an LED backlight driving circuit, a power supply module and the like. With the increasingly wide application of lcd devices, it is very important to test the performance and function of lcd devices.
At present, domestic liquid crystal display device manufacturers mainly have two kinds of methods for testing liquid crystal display devices produced by the manufacturers: a test system and a method based on a manual test method and a PC machine. The manual-based test method can only complete the detection of partial functions and performances, the test efficiency is low, the cost is high, and the test result is influenced by the professional quality of testers; for example, patent 201310320130.9 discloses a device and a method for detecting LCD and backlight module, which can detect LCD display device, and because of manual observation, the testing efficiency and accuracy are low; the test system and method based on the PC are generally used for testing liquid crystal display modules in laboratories and factories and are limited by the use conditions and the test conditions of the tested liquid crystal display modules.
In view of this, it is an urgent need to solve the technical problem of the present invention to design a testing system for a liquid crystal display device, which is simple and convenient to operate, has high testing efficiency and low cost, and can be applied to different situations.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a liquid crystal display device test system can carry out accuracy, reliable and efficient test to liquid crystal display device's function and performance according to liquid crystal display device's different models and different use occasions.
In order to solve the technical problem, the utility model provides a liquid crystal display device test system, including testing arrangement, video signal source and liquid crystal display device, be equipped with first interface and second interface on the liquid crystal display device, be equipped with third interface and fourth interface on the testing arrangement, and testing arrangement includes test special module, signal processing system and power module, video signal source passes through the third interface and is connected with testing arrangement, and video signal source is connected with liquid crystal display device through first interface, and testing arrangement matches through fourth interface and second interface and is connected with liquid crystal display device and is used for transmitting the video test signal after signal processing system handles for liquid crystal display device, power module is connected with signal processing system and is used for supplying power for signal processing system.
As a further optimization of the above technical solution, the test dedicated module is a human-computer interaction module for stand-alone test or an online dedicated module for online test, and the stand-alone test and the online test are selected by switching a test mode switch provided on the test system.
As a further optimization of the above technical solution, the signal processing system includes a video image preprocessing module, a microcontroller hardware circuit and a microcontroller software program, the microcontroller hardware circuit is respectively connected to the third interface, the fourth interface, the test dedicated module and the video image preprocessing module, the video image preprocessing module is configured to receive and process a video test signal input by the third interface and transmit the processed video test signal to the fourth interface, and the microprocessor software program is configured to drive the third interface, the fourth interface and the test dedicated module to perform information interaction and data transmission with the signal processing system respectively.
As a further optimization of the above technical solution, a specific operation implementation method for performing a stand-alone test on the tested liquid crystal display device is provided in the software program of the microcontroller.
As a further optimization of the technical scheme, the human-computer interaction module comprises a display output module for displaying the test items, the test parameters and the test results in the stand-alone test system and a keyboard input module for inputting and/or selecting the test items and the test parameters in the stand-alone test system.
As a further optimization of the above technical solution, the on-line dedicated module includes an upper computer, a fifth interface arranged on the testing device for implementing command and data transmission between the upper computer and the signal processing system, and application software arranged in the upper computer for inputting and/or selecting test items and test parameters in the on-line testing system.
As a further optimization of the above technical solution, the power supply module includes a dc power supply and a power supply management module connected to the dc power supply, and the power supply management module is respectively connected to the video image preprocessing module, the microcontroller hardware circuit, and the microcontroller software program.
As a further optimization of the technical scheme, the test device further comprises a shell for fixing and supporting the test device.
Compared with the prior art, the utility model discloses following beneficial technological effect has:
(1) the test system in the utility model has simple structure and low cost, thereby being suitable for the test of the liquid crystal display device in various occasions;
(2) the utility model discloses a switch test mode switch can realize liquid crystal display device's unit test and online test to can carry out the functional capability test according to different specification model liquid crystal display device, have characteristics such as the commonality is good, test cost is low, reliability height.
Drawings
FIG. 1 is a block diagram of a testing system for a liquid crystal display device according to the present invention,
FIG. 2 is a schematic diagram of a single-machine testing system for a liquid crystal display device according to the present invention,
fig. 3 is a schematic structural diagram of an online testing system of a liquid crystal display device according to the present invention.
In the figure: 1. the testing device comprises a testing device body, 11 a testing special module, 111 a human-computer interaction module, 112 an online special module, 12 a signal processing system, 121 a video image preprocessing module, 122 a microcontroller hardware circuit, 123 a microcontroller software program, 13 a third interface, 14 a fourth interface, 15 a power supply module, 151 a direct current power supply, 152 a power supply management module, 2 a video signal source, 3 a liquid crystal display device, 31 a first interface, 32 a second interface, 4 a shell, 5 a display output module, 6 a keyboard input module, 7 an upper computer, 8 application software and 9 a fifth interface.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1, a testing system for a liquid crystal display device includes a testing device 1, a video signal source 2 and a liquid crystal display device 3, the liquid crystal display device 3 is provided with a first interface 31 and a second interface 32, the testing device 1 is provided with a third interface 13 and a fourth interface 14, and the testing device 1 comprises a test-specific module 11, a signal processing system 12 and a power supply module 15, the video signal source 2 is connected with the testing device 1 through the third interface 13, the video signal source 2 is connected with the liquid crystal display device 3 through the first interface 31, the testing device 1 is connected with the liquid crystal display device 3 through the fourth interface 14 and the second interface 32 in a matching way for transmitting the video testing signal processed by the signal processing system 12 to the liquid crystal display device 3, the power module 15 is connected to the signal processing system 12 for supplying power to the signal processing system 12.
In this embodiment, the testing device 1 is disposed in the casing 4, and the first interface 31 is used for outputting a video signal of the liquid crystal display device; the second interface 32 is used for realizing data interaction between the testing device 1 and the liquid crystal display device 3, the third interface 13 is used for transmitting a video testing signal of the liquid crystal display device 3, the fourth interface 14 is matched with the second interface 32 and used for transmitting the video testing signal processed by the signal processing system 12 to the liquid crystal display device 3 and realizing data interaction between the special testing module 11 and the liquid crystal display device 3, the power supply module 15 is used for supplying power to each functional module in the testing device 1, and the special testing module 11 is used for inputting or (and) selecting testing items and testing parameters of the liquid crystal display device and receiving and displaying a testing result of the liquid crystal display device. An operator can input or (and) select test items and test parameters on the special test module 11 and transmit the test items and the test parameters to the liquid crystal display device 3 according to the test requirements of the tested liquid crystal display device 3, the video signal source 2 transmits acquired video test signals to the signal processing system 12 for processing, then the signal processing system 12 transmits the processed video test signals (namely test results) to the special test module 11 for displaying, and then the operator judges according to the test results displayed on the special test module 11 to finish the test of the liquid crystal display device 3. The test system has the characteristics of simple structure, simplicity and convenience in operation, low cost and high test efficiency. In this embodiment, the main parameters of the liquid crystal display device 3 during the display process include a luminance value, a contrast value and a Gamma value, and these internal parameters are generally inconvenient to be directly displayed on the display screen of the liquid crystal display device 3, and it is difficult for human eyes or instruments to perform field test, so the internal parameters of the liquid crystal display device 3 need to be read and written by the test device 1, that is, the video image preprocessing module 121 performs decoding and filtering operations of the video format, but does not change the content of the video signal.
As shown in fig. 1, fig. 2, and fig. 3, the test specific module 11 is a human-machine interaction module 111 for stand-alone test or an online specific module 112 for online test, and selects stand-alone test and online test by switching a test mode switch provided on the test system. In this embodiment, the test module switch is disposed on the test system housing 4, and the test module switch is triggered by a dial switch, and the switching between the human-computer interaction module 111 for stand-alone test and the on-line dedicated module 112 for on-line test is realized by using the test mode switch, so that the selective test between stand-alone test and on-line test is realized, and the test device has good universality and can perform corresponding functional performance tests according to different specification models. When a test mode switch on the test system is a single-machine test, test items and test parameters in the test system are input and/or selected through the keyboard input module 6 and are transmitted to the display output module 5 and the liquid crystal display device 3, then the video signal source 2 acquires video test signals on the liquid crystal display device 3, the acquired video test signals are transmitted to the signal processing system 12 through the first interface 31 and the third interface 32 to be processed, finally the signal processing system 12 transmits test results to the display output module 5, and the display output module 5 displays the test results, the test items and the test parameters, so that a test operator judges test conditions according to the display results; when the test mode switch on the test system is an online test, the test items and test parameters in the test system are input and/or selected through the upper computer 7 and the application software 8 and transmitted to the liquid crystal display device 3, and other test processes are similar to a single-machine test and only differ in that the test result of the liquid crystal display device 3 is displayed through the upper computer 7, so that the detailed description is omitted.
As shown in fig. 1, 2, and 3, the signal processing system 12 includes a video image preprocessing module 121, a microcontroller hardware circuit 122, and a microcontroller software program 123, the microcontroller hardware circuit 122 is respectively connected to the third interface 13, the fourth interface 14, the test dedicated module 11, and the video image preprocessing module 121, the video image preprocessing module 121 is configured to receive and process a video test signal input by the third interface 13 and transmit the processed video test signal to the fourth interface 14, and the microprocessor software program 123 is configured to drive the third interface 13, the fourth interface 14, and the test dedicated module 11 to perform information interaction and data transmission with the signal processing system 12. In this embodiment, the video image preprocessing module 121, the microcontroller hardware circuit 122 and the microcontroller software program 123 in the signal processing system 12 are used to realize the transmission and processing of the video test signal in the liquid crystal display device 3 and the transmission of the test result to the special test module 11 for displaying, and the testing device has a simple structure, low cost and high reliability.
As shown in fig. 1 and fig. 2, the microcontroller software program 123 is provided with a specific operation implementation method for performing a stand-alone test on the liquid crystal display device 3. In this embodiment, a specific operation implementation method of the single-computer test mode is provided in the microcontroller software program 123, so that the test items and the test parameters can be directly selected through the human-computer interaction module 111, and the method is simple and convenient to operate and high in test efficiency.
As shown in fig. 2, the human-machine interaction module 111 includes a display output module 5 for displaying test items, test parameters and test results in the stand-alone test system and a keyboard input module 6 for inputting and/or selecting test items and test parameters in the stand-alone test system. In this embodiment, the display output module 5 provides a visual and reliable test conclusion for the test operator, and the keyboard input module 6 provides a user-friendly operation interface for the test operator.
As shown in fig. 3, the on-line dedicated module 112 includes an upper computer 7, a fifth interface 9 disposed on the testing apparatus 1 for implementing command and data transmission between the upper computer and the signal processing system, and application software 8 disposed in the upper computer 7 for inputting and/or selecting test items and test parameters in the on-line testing system. In this embodiment, the upper computer 7 and the application software 8 arranged in the upper computer 7 provide a working operation environment for inputting and/or selecting the test items and the test parameters, and the input and/or selected test parameters and test items can be transmitted to the liquid crystal display device 3 through the fifth interface 9, so that the online test of the liquid crystal display device 3 can be realized;
as shown in fig. 1, fig. 2, and fig. 3, the power module 15 includes a dc power supply 151 and a power management module 152 connected to the dc power supply 151, where the power management module 152 is respectively connected to the video image preprocessing module 121, the microcontroller hardware circuit 122, and the microcontroller software program 123. In this embodiment, the power management module 152 connects the external dc power source to each functional module in the testing device 1, so as to supply power to each functional module in the testing device 1, and ensure the normal operation of each functional module.
As shown in fig. 1, 2 and 3, the testing device 1 further comprises a housing 4 for holding and supporting the testing device. In this embodiment, the microcontroller hardware circuit 122 in the testing device 1 is fixed and supported by the housing 4, and meanwhile, the testing device 1 can be protected from physical, chemical and environmental stresses during the testing process.
It is right above the utility model provides a liquid crystal display device test system has carried out the detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the core concepts of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (8)
1. The utility model provides a liquid crystal display device test system, its characterized in that, includes testing arrangement, video signal source and liquid crystal display device, be equipped with first interface and second interface on the liquid crystal display device, be equipped with third interface and fourth interface on the testing arrangement, and testing arrangement includes test special module, signal processing system and power module, video signal source passes through the third interface and is connected with testing arrangement, and video signal source passes through first interface and is connected with liquid crystal display device, and testing arrangement matches through fourth interface and second interface and is connected with liquid crystal display device and is used for transmitting the video test signal after signal processing system handles for liquid crystal display device, power module is connected with signal processing system and is used for supplying power for signal processing system.
2. The testing system of claim 1, wherein the testing dedicated module is a human-machine interaction module for stand-alone testing or an on-line dedicated module for on-line testing, and the stand-alone testing and the on-line testing are selected by switching a testing mode switch provided on the testing system.
3. The testing system of claim 2, wherein the signal processing system comprises a video image preprocessing module, a microcontroller hardware circuit and a microcontroller software program, the microcontroller hardware circuit is connected to the third interface, the fourth interface, the testing dedicated module and the video image preprocessing module, the video image preprocessing module is configured to receive and process a video testing signal input by the third interface and transmit the processed video testing signal to the fourth interface, and the microprocessor software program is configured to drive the third interface, the fourth interface and the testing dedicated module to perform information interaction and data transmission with the signal processing system, respectively.
4. The testing system of claim 3, wherein the micro-controller software program is configured with a specific operation implementation method for a single-machine test of the tested LCD device.
5. The testing system for liquid crystal display devices as claimed in claim 2, wherein the human-machine interaction module comprises a display output module for displaying the test items, the test parameters and the test results in the stand-alone testing system and a keyboard input module for inputting and selecting the test items and the test parameters in the stand-alone testing system.
6. The testing system of claim 2, wherein the on-line dedicated module comprises an upper computer, a fifth interface arranged on the testing device for implementing command and data transmission between the upper computer and the signal processing system, and application software arranged in the upper computer for inputting and selecting test items and test parameters in the on-line testing system.
7. The testing system of claim 2, wherein the power module comprises a dc power source and a power management module connected to the dc power source, and the power management module is connected to the video image preprocessing module, the microcontroller hardware circuit, and the microcontroller software program, respectively.
8. The liquid crystal display device test system of claim 2, further comprising a housing for holding and supporting the test device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921240860.7U CN210270428U (en) | 2019-08-02 | 2019-08-02 | Liquid crystal display device test system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921240860.7U CN210270428U (en) | 2019-08-02 | 2019-08-02 | Liquid crystal display device test system |
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| CN210270428U true CN210270428U (en) | 2020-04-07 |
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| CN201921240860.7U Active CN210270428U (en) | 2019-08-02 | 2019-08-02 | Liquid crystal display device test system |
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