CN106782245B - A device for display module testing - Google Patents

Abstract

The invention relates to the technical field of display, and discloses equipment for testing a display module. The equipment for display module assembly test includes the equipment body, sets up in drive plate, connector, shell fragment and the electro-magnet of equipment body, wherein: the connector is electrically connected with the driving plate, the elastic sheet is provided with a shielding part and an adsorption part, and the electromagnet is opposite to the adsorption part of the elastic sheet and is in the same power-on and power-off state with the connector; when the connector is powered on, the adsorption part of the elastic sheet is adsorbed on the electromagnet, and the shielding part of the elastic sheet shields the connector interface.

Description

A device for display module testing

technical field

The present invention relates to the field of display technology, in particular to a device for testing display modules.

Background technique

Liquid crystal displays are widely used in display devices such as computers, televisions, mobile terminals, and electronic clocks, and can be seen almost everywhere in production and life. The core component of the liquid crystal display is the liquid crystal display module, which plays a decisive role in the display performance of the liquid crystal display, such as the number of displayed colors, viewing angle, contrast, and response time. Display module determined.

Liquid crystal display modules need to be tested for lighting during the production process and before shipment. Specifically, the display driving board transmits the display driving signal to the liquid crystal display module through the connector, and then the tester can test the display screen. The defect in the prior art is that the liquid crystal display module is a precision product, and the internal liquid crystal materials and circuits are very sensitive to electricity. damage to the group, resulting in lower product yields.

SUMMARY OF THE INVENTION

An embodiment of the present invention provides a device for testing a display module. When using the device to test a display module, it can prevent live plugging and unplugging operations, thereby reducing damage to the display module and improving product yield. .

The device for display module testing provided by the present invention includes a device body, a drive board, a connector, a spring sheet and an electromagnet arranged on the device body, wherein:

The connector is electrically connected to the drive board, the elastic sheet has a shielding part and an adsorption part, the electromagnet is opposite to the adsorption part of the elastic sheet, and is in the same on-off state as the connector; when the connector is powered on, the elastic sheet The adsorption part of the shrapnel is adsorbed on the electromagnet, and the shielding part of the shrapnel shields the connector interface.

When the operator tests the display module, the connecting terminal of the display module is inserted into the interface of the connector of the above-mentioned equipment for testing the display module, and then the driver board and the connector are energized. At this time, the electromagnet is also It will be energized, the electromagnet after electrification will generate a magnetic force, and the adsorption part of the shrapnel will be attracted to the electromagnet by the magnetic force, so that the shielding part of the shrapnel will block the interface of the connector, and the operator cannot operate the connector when the display module is on; When the test is completed, the operator will cut off the power to the connector, the electromagnet will also be cut off, and the magnetic force of the electromagnet will disappear, so that the shielding part of the shrapnel can avoid the connector interface, and the display module can be pulled out from the connector interface. Connect the terminals. In this embodiment, the device is allowed to perform plugging and unplugging operations only when the connector is powered off, thus effectively preventing live plugging and unplugging operations, thereby reducing damage to the display module and improving product yield.

Preferably, the testing device further includes a return spring, and the two ends of the return spring are respectively connected with the spring piece and the device body. When the connector is powered off, the electromagnet will also be powered off, the magnetic force of the electromagnet will disappear, and the force of the reset spring can make the shielding part of the shrapnel avoid the connector interface, and there is no need to manually move the shrapnel, which improves the convenience of using the device.

Preferably, the device for testing the display module further includes a varistor connected in series with the electromagnet. This varistor adjusts the current to the coil in the electromagnet, and thus the magnetism of the electromagnet.

Optionally, the elastic piece is pivotally mounted on the device body through a pin shaft.

Preferably, the adsorption part and the shielding part are respectively located on both sides of the pin shaft.

Optionally, the return spring is a torsion spring, and the torsion spring is mounted on the pin shaft.

Optionally, the device body has a guide slot, and the elastic sheet has a guide post slidably assembled with the guide slot; or, the device body has a guide post, and the elastic sheet has a guide slot slidably assembled with the guide post.

Optionally, the return spring is a tension spring or a compression spring.

Preferably, the device body has a blocking portion for limiting the elastic sheet when the connector is powered off. When the connector is powered off, the blocking part can limit the movement of the dome, so that the dome can be reset stably.

Preferably, the device body is provided with a switch for controlling the on-off state of the electromagnet and the connector. When using the device, the operator plugs the connecting terminal of the display module into the connector, and then turns on the switch to energize the electromagnet and the connector.

Description of drawings

1 is a schematic structural diagram of a device for display module testing according to the first embodiment of the present invention (when the connector is powered off);

2 is a schematic structural diagram of a device for testing a display module according to a second embodiment of the present invention (when the connector is powered off);

3a is a schematic structural diagram of a device for testing a display module according to a third embodiment of the present invention (when the connector is powered off);

3b is a schematic structural diagram of a device for testing a display module according to a third embodiment of the present invention (when the connector is powered on);

FIG. 4 is a schematic structural diagram of an apparatus for testing a display module according to a fourth embodiment of the present invention (when the connector is powered off).

Reference number:

1- Equipment body;

2-connector;

3-shrapnel;

31 - shielding part;

32 - adsorption part;

4- electromagnet;

5-return spring;

51-torsion spring;

52 - tension spring;

6- rheostat;

7-pin shaft;

8 mounting holes;

9 - blocking part;

10 - switch;

11-Guide post;

12 - Guide slot.

Detailed ways

In order to prevent live plug-in operations when testing the display module, thereby reducing damage to the display module and improving product yield, an embodiment of the present invention provides a device for display module testing. In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail with reference to the following examples.

As shown in FIG. 1 , a device for testing a display module provided by an embodiment of the present invention includes a device body 1 , a driver board (not shown in the figure), a connector 2 , an elastic sheet 3 and a The electromagnet 4, wherein: the connector 2 is electrically connected to the drive board, the elastic piece 3 has a shielding part 31 and an adsorption part 32, the electromagnet 4 is opposite to the adsorption part 32 of the elastic piece 3, and the on-off state of the connector 2 is the same ; When the connector 2 is energized, the adsorption portion 32 of the elastic sheet 3 is adsorbed on the electromagnet 4, and the shielding portion 31 of the elastic sheet 3 blocks the connector 2 interface.

In the embodiment of the present invention, the specific type of the display module to be tested is not limited, for example, it may be a liquid crystal display module, a light-emitting diode display module, an organic light-emitting diode display module, and the like.

When testing the display module, the operator plugs the connection terminal of the display module into the interface of the connector 2 of the above-mentioned equipment for testing the display module, and then energizes the driver board and the connector 2. At this time, the electromagnetic The iron 4 is also energized, the electromagnet 4 after electrification generates a magnetic force, and the adsorption part 32 of the spring piece 3 is attracted to the electromagnet 4 by the magnetic force, so that the shielding part 31 of the spring piece 3 shields the interface of the connector 3, and the display module is in the lighting state. , the operator cannot operate the connector 2; when the test is completed, the operator powers off the connector 2, the electromagnet 4 will also be cut off, the magnetic force of the electromagnet 4 disappears, and the shielding part 31 of the shrapnel 3 can be avoided. If the connector 2 interface is used, the connection terminal of the display module can be pulled out from the connector 2 interface. In this embodiment, the device is allowed to perform plugging and unplugging operations only when the connector 2 is powered off. Therefore, live plugging and unplugging operations are effectively prevented, thereby reducing damage to the display module and improving product yield. As shown in FIG. 2 , FIG. 3 a and FIG. 3 b , in a preferred embodiment, the testing device further includes a return spring 5 , and the two ends of the return spring 5 are respectively connected to the elastic piece 3 and the device body 1 . When the connector 2 is powered off, the electromagnet 4 will also be powered off, the magnetic force of the electromagnet 4 disappears, and the force of the reset spring 5 can make the shielding part 31 of the shrapnel 3 avoid the interface of the connector 2 without manual operation, which improves the use of the Convenience of equipment.

In a preferred embodiment, the device for testing the display module further includes a varistor 6 connected in series with the electromagnet 4 . The varistor 6 can adjust the current of the coil in the electromagnet 4 so as to adjust the magnetic force of the electromagnet 4 .

As shown in FIG. 2 , FIG. 3 a and FIG. 3 b , in an optional embodiment, the elastic piece 3 is pivotally mounted on the device body 1 through the pin shaft 7 . Specifically, the elastic sheet 3 has an installation hole 8, and the device body 1 has a pin shaft 7 that matches the installation hole 8; The elastic piece 3 can be rotated around the pin shaft 7 , so that the shielding portion 31 shields and avoids the interface of the connector 2 . Specifically, the adsorption part 32 and the blocking part 31 can be located on the same side of the pin, that is, the adsorption part 32 and the blocking part 31 are located on the side of the pin close to the connector 2, then the electromagnet 4 and the return spring 5 are also close to the connector 2, to make the structure of the equipment more compact.

As shown in FIG. 3 a and FIG. 3 b , in a preferred embodiment, the adsorption part 32 and the shielding part 31 are respectively located on both sides of the pin shaft 7 . The distance between the electromagnet 4 and the connector 2 is relatively far, so that the interface of the connector 2 has a larger operating space.

Corresponding to the above embodiment, as shown in FIG. 2 , the return spring 5 is a torsion spring 51 , which is installed on the pin shaft 7 , one end of the torsion spring 51 is connected to the device body 1 , and the other end is connected to the elastic sheet 3 . The return spring 5 in this embodiment is a torsion spring 51, which can be installed on the pin shaft without occupying too much space. The return spring 5 may also be a tension spring or a compression spring. One end of the tension spring or the compression spring is connected to the device body 1 , and the other end is connected to the elastic sheet 3 . In this embodiment, the tension spring or the compression spring is more convenient to install and to replace. The selection of the return spring 5 and the corresponding installation method can be designed according to the actual situation. As shown in FIGS. 3 a and 3 b , in a specific embodiment, the return spring 5 is a tension spring 52 , which is arranged at one end of the elastic sheet 3 close to the adsorption portion 32 and at one end of the adsorption portion 32 away from the electromagnet 4 .

In an optional implementation, as shown in FIG. 4 , the device body 1 has a guide slot 12 , and the elastic piece 3 has a guide post 11 slidably assembled with the guide slot 12 ; Guide slot for column sliding assembly. The elastic piece 3 is slidably assembled with the device body 1 , the electromagnet 4 attracts the adsorption part 32 to make the elastic piece 3 slide, and the shielding part 31 shields the interface of the connector 2 .

Corresponding to the above embodiment, the return spring 5 is a tension spring 52 or a compression spring. One end of the tension spring 52 or the compression spring is connected to the device body 1 , and the other end is connected to the elastic sheet 3 .

In a preferred embodiment, the device body 1 has a blocking portion 9 for limiting the elastic piece 3 when the connector 2 is powered off. When the connector 2 is powered off, the shrapnel 3 is reset stably. As shown in FIG. 2 , in a specific embodiment, the blocking portion 9 is arranged at one end of the shielding portion 31 close to the elastic sheet 3 ;

In a preferred embodiment, the device body 1 is provided with a switch 10 for controlling the on-off state of the electromagnet 4 and the connector 2 . The switch 10 is electrically connected 1 to the electromagnet 4 and the connector 2 . The switch 10 controls the on-off state of the electromagnet 4 and the connector 2 at the same time. When using the device, the operator inserts the connecting terminal of the display module into the connector 2, and then opens the switch 10 to switch the electromagnet 4 and the connector 2 on. The connector 2 is powered on, and the switch 10 is turned off to power off the electromagnet 4 and the connector 2 .

Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, provided that these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims (7)

1. The utility model provides a test equipment, its characterized in that includes the equipment body, sets up in the drive plate, connector, shell fragment and the electro-magnet of equipment body, wherein:

the connector is electrically connected with the driving plate, the elastic sheet is provided with a shielding part and an adsorption part, and the electromagnet is opposite to the adsorption part of the elastic sheet and is in the same power-on and power-off state with the connector; when the connector is electrified, the adsorption part of the elastic sheet is adsorbed on the electromagnet, and the shielding part of the elastic sheet shields the connector interface;

the reset spring is connected with the elastic sheet and the equipment body at two ends respectively;

the elastic sheet is pivoted on the equipment body through a pin shaft.

2. The test apparatus of claim 1, further comprising a varistor in series with the electromagnet.

3. The test apparatus of claim 1, wherein the suction portion and the shielding portion are located on both sides of the pin shaft, respectively.

4. The test apparatus of claim 1, wherein the return spring is a torsion spring, the torsion spring being mounted to the pin.

5. The test apparatus of claim 1, wherein the return spring is a tension spring or a compression spring.

6. The testing device of claim 1, wherein the device body has a stop for retaining the spring when the connector is de-energized.

7. The test apparatus as claimed in claim 1, wherein the apparatus body is provided with a switch for controlling the on/off state of the electromagnet and the connector.

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