CN219284638U - FPC circuit NG test board - Google Patents

Abstract

The utility model provides an FPC line NG test board, comprising: the device comprises a PCB, a controller, a jig signal input port and a jig signal output port, wherein the controller, the jig signal input port and the jig signal output port are arranged on the PCB; the device comprises a fixture signal input port, a controller and a controller, wherein the fixture signal input port is used for being connected with a terminal to receive a lighting signal, the fixture signal output port is used for being connected with a screen module to provide the lighting signal for the screen module, a first input end of the controller is electrically connected with a signal end to be detected of the fixture signal output port, and a second input end of the controller is electrically connected with a power end of the fixture signal input port; the output end of the controller can output different electric signals based on the access condition of the signal end to be detected of the screen module, so that the problem that the existing test board cannot detect whether the circuit of the loop is in a normal state when the screen lighting test is performed is solved.

Description

FPC circuit NG test board

Technical Field

The utility model relates to the field of module detection, in particular to an FPC (flexible printed circuit) NG test board.

Background

In the prior art, a general screen module needs to be lightened and detected before leaving a factory, at this time, the screen module is generally lightened by adopting an adapter plate, however, even if some circuits are damaged in the process of lightening and detecting, the display problem of the screen module is not affected, at this time, the screen module may flow into the back end of a client, the whole machine installation circuit of the back end of the client is damaged, but the screen module which can be displayed can detect faults, and the yield of products can be affected.

In view of this, the present application is presented.

Disclosure of Invention

The utility model discloses an FPC circuit NG test board, which aims to solve the problem that the existing test board cannot detect whether the circuit of a loop is in a normal state while performing screen lighting test.

The embodiment of the utility model provides an FPC (flexible printed circuit) NG test board, which comprises: the device comprises a PCB, a controller, a jig signal input port and a jig signal output port, wherein the controller, the jig signal input port and the jig signal output port are arranged on the PCB;

the device comprises a fixture signal input port, a controller and a controller, wherein the fixture signal input port is used for being connected with a terminal to receive a lighting signal, the fixture signal output port is used for being connected with a screen module to provide the lighting signal for the screen module, a first input end of the controller is electrically connected with a signal end to be detected of the fixture signal output port, and a second input end of the controller is electrically connected with a power end of the fixture signal input port;

the output end of the controller can output different electric signals based on the access condition of the signal end to be detected of the screen module.

Preferably, the controller is a comparison chip;

the comparison chip is configured to receive a signal of the signal end to be detected and an electric signal of the power end, and output an electric signal for judging the access condition of the signal end to be detected.

Preferably, the model of the comparison chip is LM393.

Preferably, the signal end to be detected is a RESET signal end.

According to the FPC circuit NG test board provided by the utility model, the controller is added on the test board, so that the terminal provides the reference voltage signal to the controller when providing the lighting signal to the jig signal input port, and provides the electric signal to the controller when the jig signal output port outputs the lighting signal to the screen module, wherein the controller can output the signal for reflecting the access condition of the signal end to be detected based on the electric signal and the reference voltage signal, and the problem that the conventional test board cannot detect whether the circuit of the circuit is in a normal state when performing screen lighting test is solved.

Drawings

Fig. 1 is a schematic structural diagram of an FPC line NG test board provided by the present utility model;

FIG. 2 is a schematic circuit diagram of a fixture signal input port provided by the present utility model;

FIG. 3 is a schematic circuit diagram of a fixture signal output port provided by the present utility model;

fig. 4 is a schematic circuit diagram of a controller provided by the present utility model.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

Specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

The utility model discloses an FPC circuit NG test board, which aims to solve the problem that the existing test board cannot detect whether the circuit of a loop is in a normal state while performing screen lighting test.

Referring to fig. 1 to 4, an embodiment of the present utility model provides an FPC line NG test board, including: the PCB 1, a controller 13 configured on the PCB 1, a jig signal input port 12 and a jig signal output port 11;

the fixture signal input port 12 is used for being connected with a terminal to receive a lighting signal, the fixture signal output port 11 is used for being connected with a screen module to provide the lighting signal for the screen module, a first input end of the controller 13 is electrically connected with a signal end to be detected of the fixture signal output port 11, and a second input end of the controller 13 is electrically connected with a power end of the fixture signal input port 12;

the output end of the controller 13 can output different electric signals based on the access condition of the signal end to be detected of the screen module.

It should be noted that, the inventor finds that the screen module needs to be subjected to the lighting test before leaving the factory, however, even if some lines are damaged during the lighting test, the screen module can still be lighted, at this time, the screen module may be flowed into the client back end, and the client back end can detect the failure of the screen module when the complete machine test is performed, which affects the yield of the product.

In this embodiment, the jig signal input port 12 is configured to receive a lighting signal of a terminal, the jig signal output port 11 is configured to send the lighting signal to the module to be tested, a controller 13 is configured on the PCB board 1, when the terminal transmits the lighting signal to the screen module to be tested through the test board, the controller 13 can receive a reference voltage signal of the jig signal input port 12 and a signal to be tested of the jig signal output port 11, wherein the controller 13 can compare the reference voltage signal with the signal to be tested and then output an electrical signal, and a worker can detect the electrical signal in the test area 14 through a multimeter to determine whether the module to be tested connected to the jig signal output port 11 has a line fault problem.

In one possible embodiment of the present utility model, the controller 13 may be a comparison chip;

the comparison chip is configured to receive a signal of the signal end to be detected and an electric signal of the power end, and output an electric signal for judging the access condition of the signal end to be detected.

It should be noted that, in this embodiment, the lighting data from the jig is received from the jig signal input port 12, a line is led from the signal end to be detected (i.e. the RESET end) of the jig signal input port 12 to the 3 pins of the comparison chip, a line is led from the IOVCC of the jig signal input port 12 to the 2 pins of the comparison chip, the 8 pins of the comparison chip are connected to the working voltage VCC, the 4 pins of the comparison chip are connected to the ground, when the three pins of the comparison chip RESET is damaged due to the line for some reasons, the comparison chip outputs a voltage to one pin of the comparison chip, one pin of the comparison chip is connected to the IO port of the jig end, then the voltage of the IO port can be detected, if the IO port is always pulled high, the RESET signal line is damaged, and meanwhile, the jig alarms to the worker, the line damage is displayed on the screen, the position of the positioning damage is improved, the working efficiency is not only prevented, the waste of the factory can be prevented, and the waste of the materials can be reduced, and the waste of the factory can be increased, and the waste of the materials can flow into the factory end.

In one possible embodiment of the present utility model, the model of the comparison chip may be LM393.

It should be noted that, in other embodiments, the comparison chip may be of other types, which are not specifically limited herein, but all the solutions are within the scope of the present utility model.

In one possible embodiment of the present utility model, the signal terminal to be detected may be a RESET signal terminal.

It should be noted that, in other embodiments, the signal end to be detected may be another port, which is not limited herein, but all the schemes are within the protection scope of the present utility model.

According to the FPC circuit NG test board provided by the utility model, the controller 13 is added on the test board, so that the terminal provides the reference voltage signal for the controller 13 when providing the lighting signal for the jig signal input port 12, and provides the electric signal for the controller 13 when the jig signal output port 11 outputs the lighting signal to the screen module, wherein the controller 13 can output the signal for reflecting the access condition of the signal end to be detected based on the electric signal and the reference voltage signal, and the problem that the conventional test board cannot detect whether the circuit of the circuit is in a normal state while performing the screen lighting test is solved.

The above is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model.

Claims (4)

1. An FPC line NG test board, comprising: the device comprises a PCB, a controller, a jig signal input port and a jig signal output port, wherein the controller, the jig signal input port and the jig signal output port are arranged on the PCB;

the device comprises a fixture signal input port, a controller and a controller, wherein the fixture signal input port is used for being connected with a terminal to receive a lighting signal, the fixture signal output port is used for being connected with a screen module to provide the lighting signal for the screen module, a first input end of the controller is electrically connected with a signal end to be detected of the fixture signal output port, and a second input end of the controller is electrically connected with a power end of the fixture signal input port;

the output end of the controller can output different electric signals based on the access condition of the signal end to be detected of the screen module.

2. The FPC line NG test board according to claim 1, wherein the controller is a comparison chip;

the comparison chip is configured to receive a signal of the signal end to be detected and an electric signal of the power end, and output an electric signal for judging the access condition of the signal end to be detected.

3. The FPC line NG test board according to claim 2, wherein the comparison chip is model LM393.

4. The FPC line NG test board according to claim 1 or 2, wherein the signal terminal to be detected is a RESET signal terminal.

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