CN114067711A - Test tool for preventing display module from being burnt out - Google Patents
Test tool for preventing display module from being burnt out Download PDFInfo
- Publication number
- CN114067711A CN114067711A CN202111230587.1A CN202111230587A CN114067711A CN 114067711 A CN114067711 A CN 114067711A CN 202111230587 A CN202111230587 A CN 202111230587A CN 114067711 A CN114067711 A CN 114067711A
- Authority
- CN
- China
- Prior art keywords
- voltage
- test
- display module
- resistor
- lighting fixture
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 71
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000013100 final test Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Liquid Crystal (AREA)
Abstract
The invention relates to a test tool for preventing a display module from being burnt out, which comprises a lighting fixture and a display module, wherein the display module comprises an FPC (flexible printed circuit) and the display module, a test circuit is arranged on the FPC, the test circuit comprises a voltage input end, a voltage reduction module connected with the voltage input end and a voltage test end connected with the voltage reduction module, the voltage input end receives the output voltage of the lighting fixture, when the FPC is correctly connected with the lighting fixture in a buckling manner, the output voltage signal value of the voltage test end is a standard value, and when the FPC is incorrectly connected with the lighting fixture in a buckling manner, the output voltage signal value of the voltage test end is zero And (7) discarding.
Description
Technical Field
The invention relates to the technical field of display module testing, in particular to a testing tool for preventing a display module from being burnt out.
Background
With the development of science and technology, the liquid crystal display module industry is more and more competitive, and the cost is continuously increased, such as the cost of labor and the cost of environmental protection.
At present, people have higher and higher requirements on the display effect of mobile equipment and portable equipment, and display modules are continuously improved to meet the increasing requirements of people. The display module is required to be tested in the production process of the display module, for example, the display module is required to be subjected to a lighting test.
In the mill, the staff of display module group test post changes frequently, and some personnel probably do not know the test standard, in the test procedure, can appear the not in place condition of product buckle to cause some circuits of product to be damaged by the power, final test NG burns out the product.
Disclosure of Invention
The invention aims to solve the technical problem of providing a test tool which is simple in structure, can prevent a display module from being damaged by a power supply and improves the production efficiency and prevents the display module from being burnt out.
The technical scheme adopted by the invention is that the test tool for preventing the display module from being burnt out comprises a lighting fixture and a display module, wherein the display module comprises an FPC (flexible printed circuit) and the display module, one end of the FPC is used for being connected with the lighting fixture, the other end of the FPC is used for being connected with the display module, a test circuit is arranged on the FPC and comprises a voltage input end, a voltage reduction module connected with the voltage input end and a voltage test end connected with the voltage reduction module, the voltage input end receives output voltage of the lighting fixture, when the FPC is correctly connected with the lighting fixture in a buckling mode, the output voltage signal value of the voltage test end is a standard value, and when the FPC is incorrectly connected with the lighting fixture in the buckling mode, the output voltage signal value of the voltage test end is zero.
The invention has the beneficial effects that: by adopting the testing tool for preventing the display module from being burnt out, when the FPC and the lighting fixture are buckled together before the display module is electrified, if the buckling is correct, the voltage output by the lighting fixture is transmitted to the testing circuit on the FPC, after passing through the voltage reduction module, the voltage testing end of the testing circuit outputs a standard voltage signal value, and if the machine can normally detect the standard voltage signal value, the FPC and the lighting fixture are correctly buckled together, the display module can be continuously electrified for lighting testing; if the standard voltage signal value cannot be detected, namely the voltage signal value output by the voltage testing end is zero, the FPC and the lighting fixture are not correctly buckled together, the display module is stopped to be electrified, and the lighting test is carried out after the product is plugged. The tool is simple in structure, and can prevent the display module from being damaged by VSP, VSN, backlight voltage and other large power supplies, so that products are repaired and scrapped.
Preferably, the voltage reduction module in the test circuit comprises a resistor R1 connected with the voltage input end and a resistor R2 connected with the resistor R1 in series, the other end of the resistor R2 is grounded, the voltage test end is connected between the resistor R1 and the resistor R2, by adopting the structure, the resistor R1 is connected with the resistor R2 in series, the output voltage of the voltage test end connected between the resistor R1 and the resistor R2 is equal to the output voltage 1/2 of the voltage input end, so that only the test result that the output voltage of the voltage test end between the resistor R1 and the resistor R2 is equal to the output voltage 1/2 of the voltage input end shows that a standard value is detected, the buckling between the FPC flexible circuit board and a lighting fixture is correct, the circuit structure is simple, and the display module can be prevented from being damaged by large power supplies such as VSP, VSN and backlight voltage and the like, so that the product is repaired and repaired, And (7) discarding.
Preferably, the lighting fixture comprises a fixture body and an adapter plate connected with the fixture body, the other end of the adapter plate is connected with the FPC flexible circuit board, the adapter plate is used for achieving connection between the fixture body and the display assembly, the fixture body outputs voltage to the voltage testing end to test whether the fixture body is correctly buckled and connected with the display assembly, and the circuit is simple in structure and convenient to operate.
Preferably, the output voltage of the voltage input end is 1.8V, the resistance value of the resistor R1 is 10 omega, and the resistance value of the resistor R2 is 10 omega, by adopting the structure, the output voltage signal value of the voltage test end is ensured to be 0.9V, namely a standard value, and as long as the voltage of 0.9V is detected at the voltage test end, the buckle between the FPC flexible circuit board and the lighting fixture is correct, the circuit is simple in structure and convenient to operate.
Drawings
FIG. 1 is a schematic circuit diagram of a test circuit in a test fixture for preventing a display module from being burned out according to the present invention;
FIG. 2 is a schematic structural diagram of a test fixture for preventing a display module from being burned out according to the present invention;
as shown in the figure: 1. lighting the jig; 2. a display component; 3. an FPC flexible circuit board; 4. a display module; 5. a voltage input terminal; 6. an adapter plate; 7. a voltage test terminal; 8. a resistor R1; 9. a resistor R2; 10. a jig body.
Detailed Description
The invention is further described below with reference to the accompanying drawings in combination with specific embodiments so that those skilled in the art can practice the invention with reference to the description, and the scope of the invention is not limited to the specific embodiments.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, the above terms should not be construed as limiting the present invention.
The invention relates to a test tool for preventing a display module from being burnt out, which comprises a lighting fixture 1 and a display module 2, wherein the display module 2 comprises an FPC (flexible printed circuit) 3 and a display module 4, one end of the FPC 3 is used for being connected with the lighting fixture 1, the other end of the FPC 3 is used for being connected with the display module 4, a test circuit is arranged on the FPC 3, as shown in FIG. 1, the test circuit comprises a voltage input end 5, a voltage reduction module connected with the voltage input end 5 and a voltage test end 7 connected with the voltage reduction module, the voltage input end 5 receives the output voltage of the lighting fixture 1, when the FPC 3 is correctly connected with the lighting fixture 1 in a buckling manner, the output voltage signal value of the voltage test end 7 is a standard value, when the FPC 3 is incorrectly connected with the lighting fixture 1 in the buckling manner, the output voltage signal value of the voltage test terminal 7 is zero.
Adopt above-mentioned one kind to prevent that display module from being burnt out's test fixture, before big power on to display module 2, test the connectivity of lighting fixture 1 and between the display module 2 earlier, look over and light whether correctly the buckle is connected between fixture 1 and FPC flexible line way board 3, specific process is: when the FPC flexible circuit board 3 and the lighting fixture 1 are buckled together, if the buckling is correct, the voltage output by the lighting fixture 1 is transmitted to a test circuit on the FPC flexible circuit board 3, after passing through a voltage reduction module, a voltage test end 7 of the test circuit outputs a standard voltage signal value, if a machine can normally detect the standard voltage signal value, the FPC flexible circuit board 3 and the lighting fixture 1 are correctly buckled together, then a lighting test can be carried out on VDD, VSP, VSN or backlight voltage on the display module 4; if the standard voltage signal value cannot be detected, namely the voltage signal value output by the voltage testing terminal 7 is zero, the FPC 3 and the lighting fixture 1 are proved to be not buckled together correctly, so that a large power supply is not provided for the display module 4, and the lighting test is carried out after the product is plugged. The simple structure of this kind of frock can avoid display module assembly 4 to be damaged by big power such as VSP, VSN and backlight voltage to cause the product to reprocess, scrap.
As shown in fig. 1, the voltage-dropping module in the test circuit includes a resistor R18 connected to the voltage input terminal 5 and a resistor R29 connected in series with the resistor R18, the other end of the resistor R29 is grounded, the voltage test terminal 7 is connected between the resistor R18 and the resistor R29, by adopting the structure, the resistor R18 is connected in series with the resistor R29, then the output voltage of the voltage test terminal 7 connected between the resistor R18 and the resistor R29 is equal to the output voltage 1/2 of the voltage input terminal 5, so as long as the output voltage of the voltage test terminal 7 between the resistor R18 and the resistor R29 is equal to the output voltage 1/2 of the voltage input terminal 5, it is determined that a standard value is detected, it is determined that the latch between the FPC flexible circuit board 3 and the lighting fixture 1 is correct, the circuit structure is simple, and the display module 4 can be prevented from being damaged by large power sources such as VSP, VSN and backlight voltage, thereby causing the product to be repaired and scrapped.
As shown in fig. 2, the lighting fixture 1 comprises a fixture body 10 and an adapter plate 6 connected with the fixture body 10, the other end of the adapter plate 6 is connected with the FPC flexible circuit board 3, by adopting the structure, the adapter plate 6 is used for realizing the connection between the fixture body 10 and the display assembly 2, the fixture body 10 outputs voltage to a voltage testing end 7 to test whether the fixture body 10 is correctly buckled and connected with the display assembly 2, and the circuit is simple in structure and convenient to operate.
As shown in fig. 1, the output voltage of the voltage input terminal 5 is 1.8V, the resistance of the resistor R18 is 10 Ω, and the resistance of the resistor R29 is 10 Ω, so that the output voltage signal value of the voltage test terminal 7 is 0.9V, i.e. a standard value, as long as the voltage of 0.9V is detected at the voltage test terminal 7, it is indicated that the buckle between the FPC flexible circuit board 3 and the lighting fixture 1 is correct, and the circuit has a simple structure and is convenient to operate.
Claims (4)
1. The utility model provides a prevent that display module assembly is burnt out test fixture, is including lighting fixture (1) and display module (2), its characterized in that: the display component (2) comprises an FPC flexible circuit board (3) and a display module (4), one end of the FPC flexible circuit board (3) is used for being connected with the lighting fixture (1), the other end is used for being connected with the display module (4), the FPC flexible circuit board (3) is provided with a test circuit which comprises a voltage input end (5), a voltage reduction module connected with the voltage input end (5) and a voltage test end (7) connected with the voltage reduction module, the voltage input end (5) receives the output voltage of the lighting fixture (1), when the FPC (3) is correctly connected with the lighting fixture (1) in a buckling way, the output voltage signal value of the voltage test end (7) is a standard value, when the FPC (3) is in wrong buckle connection with the lighting fixture (1), the output voltage signal value of the voltage test end (7) is zero.
2. The test tool for preventing the display module from being burnt out according to claim 1, characterized in that: the voltage reduction module in the test circuit comprises a resistor R1(8) connected with the voltage input end (5) and a resistor R2(9) connected with the resistor R1(8) in series, the other end of the resistor R2(9) is grounded, and the voltage test end (7) is connected between the resistor R1(8) and the resistor R2 (9).
3. The test tool for preventing the display module from being burnt out according to claim 2, characterized in that: the lighting fixture (1) comprises a fixture body (10) and an adapter plate (6) connected with the fixture body (10), and the other end of the adapter plate (6) is connected with the FPC flexible circuit board (3).
4. The test tool for preventing the display assembly from being burned out according to claim 2, wherein: the output voltage of the voltage input end (5) is 1.8V, the resistance value of the resistor R1(8) is 10 omega, and the resistance value of the resistor R2(9) is 10 omega.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111230587.1A CN114067711A (en) | 2021-10-22 | 2021-10-22 | Test tool for preventing display module from being burnt out |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111230587.1A CN114067711A (en) | 2021-10-22 | 2021-10-22 | Test tool for preventing display module from being burnt out |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114067711A true CN114067711A (en) | 2022-02-18 |
Family
ID=80235178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111230587.1A Pending CN114067711A (en) | 2021-10-22 | 2021-10-22 | Test tool for preventing display module from being burnt out |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114067711A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101813841A (en) * | 2010-03-24 | 2010-08-25 | 友达光电(厦门)有限公司 | Test fixture and test method of display panel |
| CN201654372U (en) * | 2009-12-31 | 2010-11-24 | Tcl集团股份有限公司 | LCD module test jig |
| CN110264926A (en) * | 2019-06-13 | 2019-09-20 | 武汉华星光电技术有限公司 | The detection circuit and its detection method of display panel |
| CN111402766A (en) * | 2019-01-02 | 2020-07-10 | 格科微电子（上海）有限公司 | Module testing method |
-
2021
- 2021-10-22 CN CN202111230587.1A patent/CN114067711A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201654372U (en) * | 2009-12-31 | 2010-11-24 | Tcl集团股份有限公司 | LCD module test jig |
| CN101813841A (en) * | 2010-03-24 | 2010-08-25 | 友达光电(厦门)有限公司 | Test fixture and test method of display panel |
| CN111402766A (en) * | 2019-01-02 | 2020-07-10 | 格科微电子（上海）有限公司 | Module testing method |
| CN110264926A (en) * | 2019-06-13 | 2019-09-20 | 武汉华星光电技术有限公司 | The detection circuit and its detection method of display panel |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2938129Y (en) | Tin interconnection detection circuit, open-circuit detection circuit and welding quiality detection circuit | |
| CN102830323B (en) | Device and method for detecting welding abnormality of electrostatic discharge protection chip | |
| CN105096810A (en) | Driving component and display device | |
| CN114067711A (en) | Test tool for preventing display module from being burnt out | |
| CN105738756A (en) | Display device inspection tool and inspection method | |
| CN205210459U (en) | LCD screen test fixture keysets | |
| CN101630489B (en) | Power supply circuit of liquid crystal display | |
| CN109856499A (en) | A kind of driving part and its detection method, display device | |
| CN211698146U (en) | Insertion deviation prevention detection circuit for multiple wide FPCs (flexible printed circuits) in vehicle-mounted display system | |
| CN116699200A (en) | Inter-board connector testing device and testing method | |
| CN215932891U (en) | Novel electric secondary wiring training equipment | |
| CN209858884U (en) | Assembling device | |
| CN206557600U (en) | A kind of novel CAN changes Board Test System | |
| CN209879801U (en) | Automobile control unit measuring device capable of setting fault | |
| CN205280870U (en) | LCM is shaded to weld and prevents short circuit detection tool | |
| CN216160778U (en) | Short-circuit point tracking device for printed circuit board | |
| CN206756990U (en) | Automatic Testing System of Circuit Board | |
| CN111781486A (en) | LCM automatic electric performance detection alarm system | |
| CN206893163U (en) | Motor vehicle electrician's intelligent examining device | |
| CN207215969U (en) | A kind of measurement jig | |
| CN217404464U (en) | PCB visual inspection device | |
| CN211349743U (en) | Independent electric cooker CPU circuit function board system | |
| CN220829583U (en) | Car as a house car light detection box is pulled to trailer | |
| CN216848021U (en) | IGBT detection device | |
| CN217718023U (en) | Testing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220218 |