CN212721989U - Liquid crystal screen testing device with liquid crystal screen equipment - Google Patents
Liquid crystal screen testing device with liquid crystal screen equipment Download PDFInfo
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- CN212721989U CN212721989U CN202021468196.4U CN202021468196U CN212721989U CN 212721989 U CN212721989 U CN 212721989U CN 202021468196 U CN202021468196 U CN 202021468196U CN 212721989 U CN212721989 U CN 212721989U
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Abstract
The utility model discloses a take LCD screen testing arrangement of LCD screen equipment belongs to LCD screen performance detection area. Firstly, a power supply circuit provides power for a testing device, an instruction module generates a functional instruction, a control chip controls a liquid crystal driving chip according to the functional instruction, and the liquid crystal driving chip drives a liquid crystal screen to be tested under the control of the control chip. Therefore, the test of the liquid crystal screen can be completed through the instruction module. The testing device is independent from the equipment with the liquid crystal display, so that the remote controller for testing does not need to be replaced, the time for replacing the remote controller for testing can be saved, the testing time is short, and the testing efficiency is high.
Description
Technical Field
The utility model relates to a LCD screen performance detection area, in particular to a take LCD screen testing arrangement of LCD screen equipment.
Background
In the aspect of function control of the air conditioner, remote control by using a remote controller belongs to the most widely applied mode, and in order to judge the accuracy of instruction execution sent by the remote controller, the air conditioner needs to be additionally provided with a corresponding liquid crystal display screen on the remote controller.
The liquid crystal screen has the working principle that under the action of an external electric field, the internal rod-shaped liquid crystal molecules are changed in the arrangement state, so that light passing through the liquid crystal display device is modulated, and the bright and dark display effects are presented. In order to improve the product quality to the maximum extent, the liquid crystal display is provided with appearance size, environmental tests, performance detection and the like in a raw material supply link of the liquid crystal display.
The display performance of the liquid crystal screen at present is installed and tested by using a test remote controller which is actually produced, and in the test process, a series of actions of shell disassembly, screw assembly, core assembly, shell assembly and the like are required to put the liquid crystal screen to be tested into the test remote controller. The test time is longer. Meanwhile, after the test remote controller is used for many times, the conductive adhesive tape has the problems of abrasion, aging and the like, and the test remote controller needs to be detached for replacement or replaced by a new test remote controller. The test is long and the efficiency is low.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a test time is short, need not to change the LCD screen testing arrangement who takes LCD screen equipment of test remote controller and test method thereof.
The utility model provides a technical scheme that its technical problem adopted is:
on the one hand, the method comprises the following steps of,
the utility model provides a take LCD screen testing arrangement of LCD screen equipment, testing arrangement with take LCD screen equipment is independent, testing arrangement includes:
the liquid crystal driving chip is used for driving the liquid crystal screen to be tested;
the instruction module is used for generating a functional instruction, and the functional instruction is a functional instruction of the equipment with the liquid crystal display;
the control chip is used for controlling the liquid crystal driving chip according to the functional instruction;
and the power supply circuit is used for providing power supply for the test device.
Furthermore, the number of the instruction modules is one, and a plurality of functional instructions can be generated.
Further, the control chip is specifically configured to: and adjusting the high and low levels of output voltage according to the functional instruction, wherein the output voltage is used for representing mark codes, and the mark codes correspond to the functional instruction one by one so as to control the working state of the liquid crystal driving chip through the mark codes.
Further, the power supply circuit dc power supply circuit is used for providing dc power with a preset voltage value for the testing device.
Furthermore, the power circuit further comprises an adjustable resistor, and the adjustable resistor is used for adjusting the output voltage of the liquid crystal display screen by adjusting the resistance value of the adjustable resistor.
Further, the dc power supply circuit includes:
the battery is used for providing direct current with the preset voltage value; alternatively, the first and second electrodes may be,
and the power adapter is used for converting commercial power of alternating current into direct current with a preset voltage value.
Further, the power supply circuit also comprises a reset circuit which is used for manual reset or reset when power is on.
Furthermore, the number of the liquid crystal driving chips is at least one;
if the number of the liquid crystal driving chips is multiple, the liquid crystal driving chips are connected to the control chip after being connected in parallel.
Further, the equipment with the liquid crystal screen is a remote controller with the liquid crystal screen.
Further, the control chip is a single chip microcomputer.
Further, the test device further comprises:
the liquid crystal display device comprises a case, a liquid crystal display panel and a liquid crystal display panel, wherein a liquid crystal placing groove is formed in the case and used for placing the liquid crystal display panel;
the liquid crystal driving circuit, the control chip and the power circuit are arranged in the case;
the instruction module is arranged on the case.
Further, the instruction module is a function selection button.
Further, still include: the pressing plate is used for placing the liquid crystal screen above the liquid crystal placing groove when the liquid crystal screen is placed in the liquid crystal placing groove, and pressing the liquid crystal screen into the liquid crystal placing groove to ensure the connection between the liquid crystal screen and the circuit in the case; and gaps are formed on the liquid crystal display part and the pressing plate above the instruction module part, so that the display of the liquid crystal display and the operation of the instruction module are convenient to view.
Furthermore, one side of the pressure plate is connected with the case, and the pressure plate can rotate around the connection part.
Furthermore, at least one mounting groove is formed in the case outside the liquid crystal placing groove, so that the liquid crystal screen can be conveniently placed in the liquid crystal placing groove.
Further, the case is provided with an installation mark for prompting a correct installation direction when the liquid crystal screen is placed in the liquid crystal placing groove.
This application adopts above technical scheme, possesses following beneficial effect at least:
the utility model provides a take LCD screen testing arrangement of LCD screen equipment, at first power supply circuit provides the power for testing arrangement, and instruction module generates the function instruction, and control chip drives the LCD screen that awaits measuring according to function instruction control liquid crystal driver chip, liquid crystal driver chip under control chip's control. Therefore, the test of the liquid crystal screen can be completed through the instruction module. The testing device is independent from the equipment with the liquid crystal display, so that the remote controller for testing does not need to be replaced, the time for replacing the remote controller for testing can be saved, the testing time is short, and the testing efficiency is high.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of a circuit structure principle of a liquid crystal display testing device with a liquid crystal display device according to an embodiment of the present invention;
fig. 2 is a circuit diagram of a lcd panel testing apparatus with lcd panel devices according to an embodiment of the present invention;
fig. 3 is a schematic view of an actual device structure of a liquid crystal display testing device with a liquid crystal display device according to an embodiment of the present invention;
fig. 4 is a flowchart of a testing method of a lcd testing apparatus with lcd device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the following detailed description of the technical solutions of the present invention is made with reference to the accompanying drawings and examples. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, a liquid crystal screen testing arrangement of taking liquid crystal screen equipment, testing arrangement is independent with taking liquid crystal screen equipment, and testing arrangement includes:
the liquid crystal driving chip 101 is used for driving a liquid crystal screen 102 to be tested;
the instruction module 103 is used for generating a functional instruction, wherein the functional instruction is a functional instruction of the equipment with the liquid crystal display;
the control chip 104 is used for controlling the liquid crystal driving chip according to the functional instruction;
and a power supply circuit 105 for supplying power to the test apparatus.
The embodiment of the utility model provides a pair of take LCD screen testing arrangement of LCD screen equipment, at first power supply circuit provides the power for testing arrangement, and instruction module generates the function instruction, and control chip drives the LCD screen that awaits measuring according to function instruction control liquid crystal driver chip, liquid crystal driver chip under control chip's control. Therefore, the test of the liquid crystal screen can be completed through the instruction module. The testing device is independent of the equipment with the liquid crystal display, so that the remote controller for testing does not need to be replaced, the time for replacing the remote controller for testing can be saved, the testing time is short, and the testing efficiency is high.
As a supplementary explanation to the above embodiment, there is one instruction module, and a plurality of function instructions can be generated.
Preferably, the control chip is specifically configured to: and adjusting the high and low levels of the output voltage according to the functional instruction, wherein the output voltage is used for representing the mark codes, and the mark codes correspond to the functional instruction one by one so as to control the working state of the liquid crystal driving chip through the mark codes.
As an embodiment of the utility model provides a preferred implementation, power supply circuit DC supply circuit for provide the direct current of predetermineeing the magnitude of voltage for testing arrangement. Specifically, power is provided for the control chip, the liquid crystal driving chip and the liquid crystal screen.
In the existing process of detecting the liquid crystal screen, the remote controller for testing supplies power to the liquid crystal screen with fixed voltage, so that the brightness of liquid crystal display is ensured. However, when the liquid crystal display is bright, some dark scratches are not particularly obvious and are not easy to detect. Therefore, in some optional embodiments, the power circuit of the present invention further includes an adjustable resistor for adjusting the output voltage to the liquid crystal display by adjusting the resistance value of the adjustable resistor. By adjusting the output voltage of the liquid crystal screen, the brightness of the liquid crystal screen is reduced, and the problem of dark scratch of the liquid crystal screen can be better detected.
For more convenient detection, the direct current power supply circuit comprises: a battery for providing direct current with a preset voltage value; or the power adapter is used for converting commercial power of alternating current into direct current with a preset voltage value. Namely, the direct current power supply circuit can directly supply power by adopting a battery mode and can also adopt a mode of externally connecting commercial power. More choices and more convenient detection.
In actual design and use, the test device further comprises a reset circuit for manual reset or reset at power-on. Wherein the manual reset is an off-chip reset circuit which can be manually reset by a tester. The reset is in-chip reset when power is on, is connected with the control chip and automatically resets after the control chip is powered on.
In a preferred implementation, the device with the liquid crystal screen is a remote controller with the liquid crystal screen.
In a preferred implementation, the control chip is a single chip.
It should be noted that, there is at least one liquid crystal driving chip; if the number of the liquid crystal driving chips is multiple, the multiple liquid crystal driving chips are connected to the control chip after being connected in parallel. Through the mode of parallelly connected, a testing arrangement can test a plurality of LCD screens simultaneously. The testing efficiency is greatly accelerated.
For further explanation of the embodiments of the present invention, fig. 2 provides a circuit diagram of a lcd panel testing apparatus with an lcd panel device. Wherein, the control chip uses 1 51 singlechip minimum system for controlling the liquid crystal drive chip.
In the circuit diagram, 220VAC commercial power input is adopted, voltage reduction is carried out by using a 9V power adapter, voltage conversion of 220VAC-9VDC is achieved, and compared with a direct-current power supply and battery power supply, the circuit diagram has the advantages that the voltage adjustable range is large, the input and output voltage can be adjusted by combining a built-in voltage stabilizing block with an adjustable resistor, the gain effect on liquid crystal display dark marks can be achieved under the low-voltage condition, and the detection capability is improved. The power supply circuit adopts an adjustable voltage-stabilizing structural design, can realize the output of different driving voltages, and can better detect the problem of liquid crystal dark scratch under the low-voltage condition. The single chip microcomputer is powered by the voltage stabilizing circuit through 220VAC-9VDC conversion of the power adapter, different mark codes are sent to the liquid crystal driving chip by the single chip microcomputer through the on-off instruction of the instruction module, the driving chip receives the different driving codes to perform different action responses and bias output, content display of a full screen, a split screen and different pen sections of the liquid crystal is achieved, and the liquid crystal display device has the advantages of small occupation of I/0 port lines, stable display, low power consumption and the like.
In fig. 2, the reset circuit part adopts a 51-chip microcomputer minimum system as a communication serial port with a liquid crystal driving chip, the single chip microcomputer system comprises an on-chip reset circuit part and an off-chip reset circuit part, and the circuit diagram adopts two modes of power-on automatic reset and key manual reset, so that the function of automatically displaying a full screen pen segment by a power-on/manual switch can be realized.
The control process comprises the steps that a high-low level pulse input signal of the single chip microcomputer is controlled through the instruction module, a pin of the driving chip is connected with the single chip microcomputer, the pin is used for initializing a serial interface circuit and finishing communication between the driving chip and the single chip microcomputer, when mode conversion is carried out, the high-level pulse initializes the serial interface of the driving chip, and reading and writing of DATA of the pin DATA are achieved between the rising edge and the falling edge of a pulse signal. The instruction module in the circuit is a switch. The display content of the liquid crystal screen can be converted once by pressing the switch once, so that a plurality of display interfaces of the liquid crystal screen can be tested through one switch. And a plurality of buttons are not required to be arranged, so that the test cost is saved.
And driving the liquid crystal chip to respond. When requiring liquid crystal driver chip to respond, need to show to it that the mark code that sends correspondence indicates that the requirement is worked in which kind of state, the utility model discloses a singlechip system as with driver chip's serial communication interface to the high low level state represents the mark code, and 1 represents the high level, and 0 represents the low level, reads the data and adopts 110 mark codes, write data 101, and control command 100 realizes sending work order to driver chip.
In one embodiment, the utility model provides a take LCD screen testing arrangement's of LCD screen equipment entity structure, as shown in FIG. 3: the test device comprises:
a chassis 301, on which a liquid crystal placing groove 302 is arranged, for placing a liquid crystal screen; specifically, the size of the liquid crystal placing groove is matched with that of the liquid crystal screen; the edge inside the liquid crystal holding groove is provided with a conductive adhesive tape, and the liquid crystal is placed in the liquid crystal holding groove and then is connected with the internal circuit of the case through the conductive adhesive tape.
In some optional embodiments, at least one mounting groove 303 is disposed on the chassis outside the liquid crystal accommodating groove, so as to facilitate placing the liquid crystal screen into the liquid crystal accommodating groove or taking the liquid crystal screen out of the liquid crystal accommodating groove. Illustratively, the mounting groove is a slot formed in the edge of the liquid crystal groove, so that a finger can conveniently put the liquid crystal screen into the liquid crystal placing groove or take the liquid crystal screen out of the liquid crystal placing groove through the slot.
In some optional embodiments, the chassis is provided with an installation mark 304 for prompting a correct installation direction when the liquid crystal display is placed in the liquid crystal placing groove. Illustratively, the installation indicator is an arrow indicating a direction.
The liquid crystal display can be taken out or put into fast to mounting groove and installation sign, saves test time, improves efficiency of software testing.
The liquid crystal driving circuit, the control chip and the power circuit are disposed inside the case, and in fig. 3, the power circuit is provided with a power switch 307 for turning on or off the power of the testing device. In the above embodiment, the power circuit is provided with an adjustable resistor, so that the case is provided with a knob 308 for adjusting the resistance of the adjustable resistor.
The instruction module 305 is disposed on the chassis. In some preferred embodiments, the command module is a function selection button.
In some embodiments, further comprising: the pressing plate 306 is used for placing the liquid crystal screen above the liquid crystal placing groove when the liquid crystal screen is placed in the liquid crystal placing groove, and pressing the liquid crystal screen into the liquid crystal placing groove to ensure the connection between the liquid crystal screen and the internal circuit of the case; the clamp plate of LCD screen display part and instruction module part top has the breach to in order to look over the demonstration and the operation instruction module of LCD screen, in order to facilitate the clamp plate opening, instruction module switch and knob set up the position adjacent.
Furthermore, one side of the pressure plate is connected with the case, and the pressure plate can rotate around the connection part. The pressing plate enables the liquid crystal display to be in good contact with a circuit, and the testing accuracy is high.
Note that, in fig. 3, the test apparatus is provided with only one liquid crystal holding groove. In the actual production process, a plurality of liquid crystal placing grooves can be formed in the testing device, a plurality of liquid crystal screens can be placed at the same time, and the purpose that one instruction module tests the plurality of liquid crystal screens at the same time is achieved. Moreover, the relationship of the plurality of liquid crystal panels is a parallel relationship, that is: even if one liquid crystal screen fails, the test of other liquid crystal screens cannot be influenced.
In one embodiment, the utility model provides a test method of testing arrangement of LCD screen of tape unit equipment, as shown in FIG. 4, includes the following steps:
generating a function instruction by adopting an instruction module, wherein the function instruction is a function instruction of equipment with a liquid crystal display;
controlling a liquid crystal driving chip by adopting a control chip according to the functional instruction; wherein, control liquid crystal driver chip according to the functional instruction includes: adjusting the high and low levels of output voltage according to the functional instruction, wherein the output voltage is used for representing mark codes, and the mark codes correspond to the functional instruction one by one; and sending the mark code to the liquid crystal driving chip so as to control the working state of the liquid crystal driving chip through the mark code.
And driving the liquid crystal screen to be tested by adopting a liquid crystal driving chip under the control of the control chip.
The embodiment of the utility model provides a pair of take testing arrangement of LCD screen equipment's test method, through instruction module generation function instruction, control chip converts function instruction into the sign code, then sends the sign code for liquid crystal driver chip to the operating condition of control LCD screen. So as to complete the test of the liquid crystal screen.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality" means at least two unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.
The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (16)
1. The utility model provides a take LCD screen testing arrangement of LCD screen equipment which characterized in that: the testing arrangement with take LCD screen equipment is independent, the testing arrangement includes:
the liquid crystal driving chip is used for driving the liquid crystal screen to be tested;
the instruction module is used for generating a functional instruction, and the functional instruction is a functional instruction of the equipment with the liquid crystal display;
the control chip is used for controlling the liquid crystal driving chip according to the functional instruction;
and the power supply circuit is used for providing power supply for the test device.
2. The apparatus of claim 1, wherein: the number of the instruction modules is one, and a plurality of functional instructions can be generated.
3. The apparatus of claim 1, wherein: the control chip is specifically configured to: and adjusting the high and low levels of output voltage according to the functional instruction, wherein the output voltage is used for representing mark codes, and the mark codes correspond to the functional instruction one by one so as to control the working state of the liquid crystal driving chip through the mark codes.
4. The apparatus of claim 1, wherein: the power supply circuit is a direct current power supply circuit and is used for providing direct current with a preset voltage value for the testing device.
5. The apparatus of claim 4, wherein: the power supply circuit further comprises an adjustable resistor, and the adjustable resistor is used for adjusting the output voltage of the liquid crystal display screen by adjusting the resistance value of the adjustable resistor.
6. The apparatus of claim 4, wherein: the direct current power supply circuit includes:
the battery is used for providing direct current with the preset voltage value; alternatively, the first and second electrodes may be,
and the power adapter is used for converting commercial power of alternating current into direct current with a preset voltage value.
7. The apparatus of claim 1, wherein: the power-on reset circuit also comprises a reset circuit which is used for manual reset or reset when power is on.
8. The apparatus of any one of claims 1-7, wherein: the number of the liquid crystal driving chips is at least one;
if the number of the liquid crystal driving chips is multiple, the liquid crystal driving chips are connected to the control chip after being connected in parallel.
9. The apparatus of any one of claims 1-7, wherein: the equipment with the liquid crystal screen is a remote controller with the liquid crystal screen.
10. The apparatus of any one of claims 1-7, wherein: the control chip is a single chip microcomputer.
11. The apparatus of any one of claims 1-7, wherein: the test device further comprises:
the liquid crystal display device comprises a case, a liquid crystal display panel and a liquid crystal display panel, wherein a liquid crystal placing groove is formed in the case and used for placing the liquid crystal display panel;
the liquid crystal driving circuit, the control chip and the power circuit are arranged in the case;
the instruction module is arranged on the case.
12. The apparatus of claim 11, wherein: the instruction module is a function selection button.
13. The apparatus of claim 11, wherein: further comprising: the pressing plate is used for placing the liquid crystal screen above the liquid crystal placing groove when the liquid crystal screen is placed in the liquid crystal placing groove, and pressing the liquid crystal screen into the liquid crystal placing groove to ensure the connection between the liquid crystal screen and the circuit in the case; gaps are formed in the liquid crystal display part and the pressing plate above the instruction module, so that the display of the liquid crystal display and the operation of the instruction module are convenient to view.
14. The apparatus of claim 13, wherein: one side of the pressure plate is connected with the case, and the pressure plate can rotate around the connection part.
15. The apparatus of claim 11, wherein: the case outside the liquid crystal placing groove is provided with at least one mounting groove, so that the liquid crystal screen can be conveniently placed into the liquid crystal placing groove.
16. The apparatus of claim 11, wherein: and the case is provided with an installation mark for prompting a correct installation direction when the liquid crystal screen is placed in the liquid crystal placing groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021468196.4U CN212721989U (en) | 2020-07-22 | 2020-07-22 | Liquid crystal screen testing device with liquid crystal screen equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021468196.4U CN212721989U (en) | 2020-07-22 | 2020-07-22 | Liquid crystal screen testing device with liquid crystal screen equipment |
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| Publication Number | Publication Date |
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| CN212721989U true CN212721989U (en) | 2021-03-16 |
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| CN202021468196.4U Active CN212721989U (en) | 2020-07-22 | 2020-07-22 | Liquid crystal screen testing device with liquid crystal screen equipment |
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