CN116453436A

CN116453436A - Point screen test system

Info

Publication number: CN116453436A
Application number: CN202310420447.3A
Authority: CN
Inventors: 汪伶俐; 江吉龙
Original assignee: Hubei Changjiang New Display Industry Innovation Center Co Ltd
Current assignee: Hubei Changjiang New Display Industry Innovation Center Co Ltd
Priority date: 2023-04-18
Filing date: 2023-04-18
Publication date: 2023-07-18

Abstract

The invention discloses a dot screen test system, which comprises a test power supply box, a plurality of test boards and a plurality of connection detection modules, wherein the test power supply box is connected with the test boards; the test power supply box comprises a plurality of signal output ports; the test board comprises signal receiving ports, and the signal receiving ports are connected with signal output ports of the test power supply box in one-to-one correspondence. The connection detection module is electrically connected with the signal output port through the signal receiving port, and is used for detecting the connection condition of the signal receiving port and the signal output port and displaying the connection condition. The presence of the connection detection module enables a tester to intuitively observe the communication relation between the signal output port of the test power supply box and the test board, so that the screen pointing test is avoided under the condition of connection errors, the positioning accuracy of an abnormal device to be tested is improved, and further the screen pointing test efficiency is improved.

Description

Point screen test system

Technical Field

The embodiment of the invention relates to the technical field of display, in particular to a dot screen test system.

Background

Along with the continuous progress of technology, display panels are rapidly developed in the society of today, and are widely used in the fields of mobile phones, computers, televisions, and the like. Before the display panel is put into use, a series of spot screen tests are required to be performed on the display panel, for example, one Time Program (OTP) burn-in is performed on a driving chip of the display panel, and touch screen tests (TP tests) and lighting tests are performed on the display panel. In the prior art, when testing the display panel, the problems of misplacement connection and/or misplacement of power lines and the like of the test board are easy to occur due to the fact that the number of the test channels is large, and the testing efficiency of the production line is reduced.

Disclosure of Invention

In view of this, the invention provides a spot screen test system to intuitively display the corresponding connection condition of the test board and the test power box, avoid the connection error of the test board and the signal output port of the test power box, and improve the spot screen test efficiency.

The invention provides a dot screen test system, which comprises a test power supply box, a plurality of test boards and a plurality of connection detection modules;

the test power supply box comprises a plurality of signal output ports;

the test board comprises signal receiving ports, and the signal receiving ports are connected with the signal output ports of the test power supply box in a one-to-one correspondence manner;

the connection detection module is electrically connected with the signal output port through the signal receiving port, and is used for detecting the connection condition of the signal receiving port and the signal output port and displaying the connection condition.

In the invention, a test power supply box, a plurality of test boards and a plurality of connection detection modules are arranged in a dot screen test system; the test power supply box comprises a plurality of signal output ports; the test board comprises signal receiving ports, and the signal receiving ports are connected with signal output ports of the test power supply box in one-to-one correspondence. The connection detection module is electrically connected with the signal output port through the signal receiving port, and is used for detecting the connection condition of the signal receiving port and the signal output port and displaying the connection condition. The presence of the connection detection module enables a tester to intuitively observe the communication relation between the signal output port of the test power supply box and the test board, so that the screen pointing test is avoided under the condition of connection errors, the positioning accuracy of an abnormal device to be tested is improved, and further the screen pointing test efficiency is improved.

Drawings

Fig. 1 is a schematic structural diagram of a dot screen test system according to an embodiment of the present invention;

fig. 2 is a schematic diagram of a partial structure of a dot screen test system according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a partial structure of another system for testing a touch screen according to an embodiment of the present invention;

FIG. 4 is a flowchart of a system for testing a touch screen according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a partial structure of a dot screen test system according to another embodiment of the present invention;

FIG. 6 is a connection status display diagram of a dot screen test system according to an embodiment of the present invention;

fig. 7 is a connection status display diagram of another dot screen test system according to an embodiment of the present invention.

Detailed Description

The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.

At present, when testing the display panel, a test power supply box is required to be connected with a device to be tested through a test board, and a plurality of signal output ports are generally arranged in the test power supply box and are respectively connected to different test boards so as to test the plurality of devices to be tested. The plurality of signal output ports are generally connected to the plurality of test boards through corresponding power lines, and the number of the power lines is large, and the distances between the power lines corresponding to the different signal output ports are relatively short; in the testing process, the problem of misplug power lines or misplug test boards is easy to occur.

Based on the above problems, the present application provides a dot screen test system, which includes a test power box, a plurality of test boards, and a plurality of connection detection modules;

the test power supply box comprises a plurality of signal output ports;

the test board comprises signal receiving ports, and the signal receiving ports are connected with signal output ports of the test power supply box in one-to-one correspondence;

the connection detection module is electrically connected with the signal output port through the signal receiving port and is used for detecting the connection condition of the signal receiving port and the signal output port and displaying the connection condition.

Through the technical scheme, a tester can intuitively observe the communication relation between the signal output port of the test power supply box and the test board, so that the screen pointing test is avoided under the condition of connection errors, the positioning accuracy of an abnormal device to be tested is improved, and further the screen pointing test efficiency is improved.

The foregoing is the core idea of the present invention, and the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without making any inventive effort are intended to fall within the scope of the present invention.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a dot screen test system according to an embodiment of the present invention, where the dot screen test system includes: a test power box 1, a plurality of test boards 2 and a plurality of connection detection modules 3; the test power supply box 1 includes a plurality of signal output ports 10; the test board 2 comprises signal receiving ports 20, and the signal receiving ports 20 are connected with the signal output ports 10 of the test power supply box 1 in a one-to-one correspondence manner; the connection detection module 3 is electrically connected with the signal output port 10 through the signal receiving port 20, and the connection detection module 3 is used for detecting the connection condition of the signal receiving port 20 and the signal output port 10 and displaying the connection condition.

Specifically, the test power supply box 1 is configured to transmit a test data signal to the device under test 4, so as to perform OTP burning, TP testing, lighting testing, or the like on the device under test 4. The test power box 1 may be a multifunctional PG test box, in which a burning program or a test program may be stored, but is not limited thereto. The test power supply box 1 may also be electrically connected to a host computer (not shown in the figure), which provides test data signals to the device under test 4 via the test power supply box 1.

The signal output ports 10 on the test power supply box 1 are electrically connected to the signal receiving ports 20 of different test boards 2, respectively, and each signal output port 10 communicates with one signal receiving port 20 (also understood as a test board 2). Wherein, as described in the above embodiment, the test power box 1 may be in communication with the test board 2 through the power line 5, and the test data signal is transmitted from the signal output port 10 of the test power box 1 to the signal receiving port 20 of the test board 2 through the power line 5.

Further, with continued reference to fig. 1, the test board 2 may be electrically connected to the devices under test 4 in a one-to-one correspondence, and the test data signals are transmitted to the devices under test 4 after passing through the test board 2, so as to perform a dot screen test on the devices under test 4. The test board 2 may be an OTP test board, a TP test board, or an OTP and TP two-in-one test board, but is not limited thereto.

When in screen-lighting test, a certain signal output port 10 of the test power supply box 1 is connected with a certain test board 2 by using a power line 5, test data signals are transmitted to the device 4 to be tested through the signal output port 10 and the signal receiving port 20, and the device 4 to be tested works according to the test data signals and feeds back to the test power supply box 1. The feedback signals are transmitted to the signal output ports 10 through the signal receiving ports 20, and the test power supply box 1 judges whether the device 4 to be tested connected to each signal output port 10 is normal or not according to the feedback signals received by each signal output port 10.

Under the normal wiring condition, the ith (i is greater than or equal to 1) signal output port 10 should be communicated with the ith test board 2 with the corresponding number, and if the ith signal output port 10 receives an abnormal feedback signal, the test power supply box 1 judges that the ith device 4 to be tested is abnormal. If the scheme in the related art is adopted, when the power line 5 or the test board 2 is connected in error, for example, the ith signal output port 10 is connected with the (i+1) th test board 2, if the ith signal output port 10 receives an abnormal feedback signal, the test power box 1 still determines that the ith device under test 4 is abnormal. However, the actually abnormal device 4 to be tested is the (i+1) th device 4 to be tested, and at this time, the positioning of the abnormal device 4 to be tested is wrong, and the normal device 4 to be tested is misjudged as the abnormal device 4 to be tested, so that the whole flow of the point screen test is influenced.

In the invention, a plurality of connection detection modules 3 are arranged in a dot screen test system, each test board 2 is provided with one connection detection module 3, and the connection detection modules 3 are electrically connected with a signal output port 10 of a test power supply box 1 and a signal receiving port 20 of the test board 2 at the same time; in this way, the connection detection module 3 can detect the electrical signals at the signal receiving port 20 and the signal output port 10 at the same time, and determine the connection condition of the signal receiving port 20 and the signal output port 10, that is, determine the connection condition of the signal output port 10 and the test board 2, based on the electrical signals at the signal receiving port 20 and the signal output port 10.

The connection condition of the signal receiving port 20 and the signal output port 10 may refer to whether the signal receiving port 20 (test board 2) communicates with the corresponding signal output port 10; or may refer to the current communication state of each signal receiving port 20 and each signal output port 10.

Further, the connection detection module 3 may show the connection condition of the signal receiving port 20 and the signal output port 10. For example, the connection detection module 3 may show whether the signal receiving port 20 and the signal output port 10 to which it is connected correspond to each other, that is, whether the i-th signal output port 10 is connected to the i-th signal receiving port 20; alternatively, the connection detection module 3 may show which signal output port 10, which signal receiving port 20 it is connected to. Of course, the above connection is shown only as an example, and the present invention is not limited thereto, and may be adjusted according to actual requirements.

In the arrangement mode, the communication relation between the signal output port 10 of the test power supply box 1 and the test board 2 can be visually displayed to a tester, and when the signal receiving port 20 and the signal output port 10 are not matched, the tester can adjust the connection relation in time to ensure that the test board 2 and the signal output port 10 of the test power supply box 1 are matched with each other; the screen pointing test is avoided under the condition of connection errors, so that the positioning accuracy of the device 4 to be detected abnormally is improved, and the screen pointing test efficiency is improved.

In addition, this arrangement has a further advantage in that, since each test board 2 is correspondingly provided with one connection detection module 3, each connection detection module 3 can detect the signal receiving port 20 of the corresponding test board 2 and the signal output port 10 electrically connected to the signal receiving port 20, and further, different connection detection modules 3 respectively display the communication condition between different test boards 2 and the test power supply box 1. The connection detection modules 3 are mutually independent, so that the problem that other connection detection modules 3 cannot work normally due to the failure of a certain connection channel can be effectively avoided, and the reliability of the spot screen test system is improved.

It should be noted that, the number of connection lines between the test board 2 and the device to be tested 4 is small, and the connection error will not occur generally.

The test board 2 provided by the present invention further includes any structural component known to those skilled in the art, and this embodiment is not described in detail herein.

The connection detection module may be set by those skilled in the art according to actual requirements, which is not limited in the present invention.

Fig. 2 is a schematic diagram of a partial structure of a dot screen test system according to an embodiment of the present invention, and referring to fig. 1 and 2, in a possible embodiment, the connection detection module 3 may be formed by a first display unit 30 and a detection unit 31, where the detection unit 31 is electrically connected to the signal receiving port 20 and the first display unit 30, respectively; the detection unit 31 controls the first display unit 30 to perform communication correct display when the communication relationship between the signal receiving port 20 and the signal output port 10 satisfies a preset communication relationship.

Specifically, as described in the above embodiment, each test board 2 is provided with one connection detection module 3, and the connection detection module 3 is electrically connected to the signal receiving port 20 of the corresponding test board 2 (the connection broken line between the two structures in the figure indicates the electrical connection of the two). In this embodiment, the detection unit 31 in the connection detection module 3 may be electrically connected to the signal receiving port 20 of the corresponding test board 2, and further electrically connected to the signal output port 10 of the test power box 1 through the signal receiving port 20. The detecting unit 31 may be configured to detect whether the signal receiving port 20 and the signal output port 10 to which it is connected satisfy a preset connection relationship.

Further, the detecting unit 31 is electrically connected with the first display unit 30, and when the detecting unit 31 detects that the signal receiving port 20 and the signal output port 10 meet the preset connection relationship, the first display unit 30 can be controlled to perform correct connection display; when the detection unit 31 detects that the signal receiving port 20 and the signal output port 10 do not meet the preset connection relationship, the first display unit 30 can be controlled to perform connection error display.

Wherein, the signal receiving port 20 and the signal output port 10 satisfying the preset connection relationship is that the signal receiving port 20 and the signal output port 10 are mutually matched in the above embodiment; the signal receiving port 20 is not matched with the signal output port 10 if the preset connection relationship is not satisfied.

Further, the first display unit 30 may include a display screen, an indicator light, and/or a buzzer, but is not limited thereto, and any element capable of displaying the communication condition is within the scope of the present protection implementation. The communication correct presentation may include, but is not limited to, a text presentation, a light presentation, and/or a sound presentation, etc.

In addition, the embodiment of the present invention is not limited to the setting position of the first display unit 30, and in an alternative embodiment, the first display unit 30 may be mounted on the test board 2 to improve the integration level of the dot screen test system. Of course, in other embodiments not shown, the first display unit 30 may be externally connected according to actual needs, which will not be described in detail in this embodiment.

Alternatively, in a possible embodiment, the detection unit 31 may be a detection chip, where a detection program is included, and the detection program performs the function of the detection unit 31 provided in any embodiment of the present invention. The detection chip can be integrated on the test board 2, so that the integration level of the dot screen test system is further improved.

It will be appreciated by those skilled in the art that, in general, a plurality of idle ports (not shown) are provided in the test board 2, and the test chip and the first display unit 30 may be provided on the idle ports, so that the test board 2 is slightly modified.

In this embodiment, by setting the first display unit 30 and the detection unit 31 in the connection detection module 3, the detection unit 31 controls the first display unit 30 to display under the condition that the signal output port 10 and the signal receiving port 20 are correctly communicated, and the setting modes of the detection unit 31 and the first display unit 30 are simpler, and the process difficulty and the manufacturing cost are lower.

The specific method for determining whether the signal receiving port 20 and the signal output port 10 meet the preset connection relationship is not limited, and those skilled in the art can set the specific method according to actual requirements, and several alternative technical schemes are described below by way of example.

Illustratively, in a possible embodiment, the plurality of signal receiving ports 20 have a plurality of different first numbers, the plurality of signal output ports 10 have a plurality of different second numbers, and when the communication relationship between the signal receiving ports 20 and the signal output ports 10 satisfies the preset communication relationship, the first numbers of the signal receiving ports 20 and the second numbers of the signal output ports 10 are the same; the detecting unit 31 is configured to determine a first number of the signal receiving port 20 and a second number of the signal output port 10 that communicates with the signal receiving port 20, and control the first display unit 30 to perform correct communication display when the first number is the same as the second number.

In this embodiment, to distinguish different signal output ports 10 of the test power supply box 1, each signal output port 10 may be numbered, and different signal receiving ports 20 have different first numbers; accordingly, each signal output port 10 (i.e., test plate 2) may be numbered, with different signal output ports 10 having different second numbers. When the number of the signal output ports 10 and the signal receiving ports 20 is m (m is an integer greater than 1), the first number may be 1 to m, and the second number may be 1 to m.

The first number and the second number have dual meanings, where the first number may refer to a virtual number and an entity number of each signal receiving port 20, and the second number may refer to a virtual number and an entity number of the signal output port 10. The virtual number refers to the number of the signal output port 10 and the signal receiving port 20 determined according to the program, and the physical number refers to the number attached or printed to the area where the signal output port 10 and the signal receiving port 20 are located (for example, numerals "(1) to (4)" at the signal output port 10 and the signal receiving port 20 shown in fig. 1). The virtual number is used for program judgment, and the entity number is used for inspection by a tester. The first number of the signal receiving port 20 may also refer to the number of the test board 2.

Further, when the detecting unit 31 detects that the first number of the signal receiving port 20 connected with the detecting unit is the same as the second number of the signal output port 10, it may be determined that the signal receiving port 20 and the signal output port 10 are matched with each other, that is, the signal receiving port 20 and the signal output port 10 satisfy the preset connection relationship, and at this time, the detecting unit 31 may control the first display unit 30 to perform correct connection display.

It can be understood that, since each test board 2 is correspondingly provided with one detection unit 31 and one first display unit 30, each detection unit 31 can control the first display unit 30 to display whether the signal output port 10 of the corresponding test board 2 and the test power supply box 1 meet the preset connection condition. And the communication conditions of the different test boards 2 and the test power supply box 1 are respectively displayed by the different first display units 30.

The test power box 1 is exemplarily shown in fig. 1 to include 4 signal output ports 10, and the number of corresponding test boards 2 (i.e., signal receiving ports 20), detection units 31, and first display units 30 is also 4, which is not limited thereto in practice.

Optionally, the detecting unit 31 may be further configured to control the first display unit 30 to display a communication error when the first number is different from the second number.

When the detecting unit 31 detects that the first number of the signal receiving port 20 connected thereto is different from the second number of the signal output port 10, it may be determined that the signal receiving port 20 is not matched with the signal output port 10, that is, the signal receiving port 20 and the signal output port 10 satisfy the preset communication relationship. At this time, the detecting unit 31 can control the first display unit 30 to display the communication error, so as to remind the tester of the error of the connection channel between the current test board 2 and the test power supply box 1.

Referring to fig. 3, fig. 3 is a schematic diagram of a partial structure of another dot screen test system according to an embodiment of the present invention, and fig. 1 and fig. 3 can be combined, in this embodiment, the number of signal receiving ports 20 and signal output ports 10 is m, a plurality of first numbers are 1-m respectively, and a plurality of second numbers are 1-m respectively; the detection unit 31 determines the second number of the signal output port 10 communicating with the signal receiving port 20 from the signal received by the signal receiving port 20; the connection detection module 3 further comprises m connection switches 32, the connection switches 32 are arranged in one-to-one correspondence with the signal receiving ports 20, the m connection switches 32 are provided with m different third numbers, and the m third numbers are respectively 1-m; the connection switch 32 is electrically connected with the detection unit 31, and when the signal receiving port 20 is communicated with one of the signal output ports 10, the connection switch 32 corresponding to the signal receiving port 20 is controlled to be closed, and after the connection switch 32 is closed, a communication signal is sent to the detection unit 31; the detection unit 31 determines the first number of the signal receiving port 20 from the communication signal; wherein m is an integer, and m is greater than 1. In fig. 3, m is exemplarily shown as 4, but is not limited thereto.

Specifically, the numbering of the signal output port 10 and the signal receiving port 20 has been described in the above embodiments, and will not be repeated here. In this embodiment, when the test power supply box 1 transmits the test data signal through the 1 st to the mth signal output ports 10, the test data signal may be provided with serial number information, that is, the test data signal transmitted by the i (1 st to m) th signal output port 10 is provided with information indicating the own second serial number i; the detection unit 31 may then determine the second number of the signal output port 10 based on the test data signal received by the signal receiving port 20 to which it is connected.

Further, in the present embodiment, a plurality of connection switches 32 may be provided in the connection detection modules 3, and the number of connection switches 32 in each connection detection module 3 is the same as the number of test boards 2 (or signal receiving ports 20). The same connection detection module 3 includes m connection switches 32 corresponding to the m signal receiving ports 20 one by one. The m connection switches 32 may be numbered in the same manner as the first and second numbers, i.e., each connection switch 32 in the same connection detection module 3 is numbered 1 to m.

Here, the third number also has a double meaning, and may refer to a virtual number and an entity number (for example, "(1) to" "(4)" shown in fig. 3) of each connection switch 32, and the meaning of the virtual number and the entity number is not described here. When the signal output port 10 is connected with the signal receiving port 20 of the test board 2 by the power line 5, the connection switch 32 with the same number as the first number of the signal receiving port 20 can be controlled to be closed; the connection switch 32 may automatically send a communication signal to the detection unit 31 after being closed, where the communication signal may carry information indicating the third number of the connection switch 32. The detecting unit 31 may determine the third number of the connection switch 32 according to the communication signal, and may determine the first number of the signal receiving port 20 after determining the third number since the third number is the same as the first number.

After determining the first number of the signal receiving port 20 and the second number of the signal output port 10 connected to the detecting unit 31, the detecting unit 31 may determine whether the first number is the same as the second number; and if the first display unit 30 is the same, the first display unit 30 is controlled to display the communication errors, and if the first display unit 30 is different, the first display unit 30 is controlled to display the communication errors.

By providing the connection switch 32, the first number of the signal receiving port 20 is determined by the third number of the connection switch 32, and the judgment logic of the detection unit 31 is relatively simple and the setting is relatively easy. Since the connection switches 32 are in one-to-one correspondence with the signal receiving ports 20, the connection switches 32 can also reflect the first number of the signal receiving port 20 more accurately.

Fig. 4 is a flowchart of a dot screen test system according to an embodiment of the present invention, and the flowchart of the dot screen test system according to the present invention may be described with reference to fig. 3 and 4. First, the test power supply box 1 is connected to a plurality of (4 in the drawing) test boards 2 by power supply lines 5; wherein the different signal output ports 10 of the test power supply box 1 are in communication with the signal receiving ports 20 of the different test boards 2. After the signal output port 10 is communicated with the signal receiving port 20, the connection switch 32 with the same number as the signal receiving port 20 in each connection detection module 3 is controlled to be closed, so that the connection switch 32 with the same number as the signal receiving port 20 sends a communication signal to the detection unit 31. Further, the detection unit 31 determines the third number of the connection switch 32 from the received communication signal, and determines the first number of the signal receiving port 20 from the third number. Meanwhile, the detection unit 31 also determines the second number of the signal output port 10 from the test data signal received by the signal receiving port 20 to which it is connected. Further, the detecting unit 31 determines whether the first number of the signal receiving port 20 connected with the detecting unit is the same as the second number of the signal output port 10, if so, the first display unit 30 is controlled to perform communication correct display, and if not, the first display unit 30 is controlled to perform communication incorrect display. The tester can visually observe the communication condition of the signal receiving port 20 and the signal output port 10 according to the display state of the first display unit 30.

Optionally, with continued reference to fig. 3, in a possible embodiment, the test board 2 further includes m switch connection ports (not shown in the figure) electrically connected to the connection switches 32 in a one-to-one correspondence, the m switch connection ports having m different fourth numbers, and the m fourth numbers are 1 to m, respectively; the switch connection port is also electrically connected with the detection unit 31, and when the connection switch 32 is closed, a communication signal is sent to the detection unit 31 through the corresponding switch connection port; let the switch connection port transmitting the communication signal be the first switch connection port, the detection unit 31 determines the third number of the connection switch 32 according to the fourth number of the first switch connection port, and further determines the first number of the signal receiving port 20.

Specifically, in this embodiment, m connection switches 32 may be integrated on the test board 2 and electrically connected in a one-to-one correspondence with m switch connection ports on the test board 2, which are not shown in the drawing), and each switch connection port may be electrically connected with the detection unit 31. The switch connection ports are numbered the same as the connection switches 32. After the connection switch 32 corresponding to a certain signal receiving port 20 is closed, the communication signal is transmitted to the detection unit 31 through the ports of the connection switches 32 with the same number. In this way, the detecting unit 31 can directly determine the number (i.e. the third number) of the connection switch 32 according to the number (i.e. the fourth number) of the switch connection port transmitting the communication signal, and further determine the number (i.e. the first number) of the signal receiving port 20 according to the number of the connection switch 32.

In this arrangement, the communication signal may not need to carry the number information, and the third number of the connection switch 32 may be determined by determining the fourth number of the connection port of the first switch. Since each switch connection port is independently arranged and is electrically connected with the detection unit 31, the detection unit 31 can automatically identify the number of the first switch connection port.

The switch connection port may be an idle port on the test board 2, and the connection switch 32 is integrated on the test board 2 by using the idle port, so that the integration level of the connection detection module 3 can be improved, and the test board 2 can be fully utilized.

The present invention is not limited to the type of the connection switch 32, and those skilled in the art can set the connection switch according to actual needs. Illustratively, in a possible embodiment, the connection switch 32 may be a dial switch, and the switch connection port for transmitting the first level signal is a first switch connection port when the dial switch is turned on and sends the first level signal to the detection unit 31.

Specifically, the dial switch includes two dial states, the first state may correspond to an open state, and the second state may correspond to a closed state. After the signal receiving port 20 is connected to a certain signal output port 10, the dial switch having the same number as the signal receiving port 20 is turned to the second state, and the dial switch is turned on. In this embodiment, when the dial switch is turned on, the dial switch may generate a high-level signal (i.e., a first level signal), which is a communication signal. The switch connection port transmitting the high level signal can be regarded as the first switch connection port.

Further, the detecting unit 31 may determine the number (i.e., the third number) of the connection switch 32 according to the number (i.e., the fourth number) of the open connection port that receives the high level signal.

The dial switch is simple in structure, small in size and low in cost, and the dial switch is used as the connecting switch 32, so that the connecting switch 32 can be guaranteed to play a role in transmitting communication signals, the integration difficulty of the connecting detection module 3 can be reduced, and the setting cost of the connecting detection module 3 is reduced. The closing of the dial switch can be controlled manually by a tester or automatically by a program on the test board 2, and the invention is not limited to this.

Accordingly, when the dial switch is turned off, the dial switch may generate a second level signal, for example, a low level signal, and when the detecting unit 31 detects the second level signal, the dial switch is turned off.

Of course, in other possible embodiments, the connection switch 32 may be another type of switch, such as a key switch, but is not limited thereto, and the present invention is not limited thereto.

The above embodiments are described by taking the example that the detection unit 31 controls the first display unit 30 to perform communication correctly (or incorrectly) display, and the present invention is not limited thereto. For example, in other possible embodiments, the first display unit 30 may be configured as a display screen, and the detecting unit 31 may detect the first number of the signal receiving port 20 and the second number of the signal output port 10 connected thereto, so as to control the display screen to visually display the first number and the second number. In the arrangement mode, a tester can observe whether the signal output port 10 is correctly communicated with the signal receiving port 20 or not, and can clearly know the connection mode between the ports; when the signal output port 10 and the signal receiving port 20 are connected incorrectly, the incorrect connection position can be positioned rapidly and the power line 5 can be adjusted to the correct connection channel, so that the signal output port 10 is matched with the signal receiving port 20.

Alternatively, in a possible embodiment, the first display unit 30 may be a first indicator light, which is mounted on the test board 2; the detecting unit 31 is further configured to control the first indicator light to emit a first color light when the first number is the same as the second number, so as to perform correct communication display.

In this embodiment, the communication between the signal output port 10 and the signal receiving port 20 can be demonstrated by using the first indicator light. When the detecting unit 31 determines that the numbers of the signal receiving port 20 and the signal output port 10 connected thereto are the same, the first indicator light may be controlled to emit a first color light (for example, green light, but not limited thereto), where the first color light is used to show to a tester that the connection channel between the current test board 2 and the test power supply box 1 is correct.

Further, when the detecting unit 31 determines that the numbers of the signal receiving port 20 and the signal output port 10 connected thereto are different, the first indicator light may be controlled to emit a second color light (for example, red light, but not limited thereto), which is used to show the connection channel error of the current test board 2 and the test power box 1 to the tester.

The first color light and the second color light should be light with larger color difference, so as to clearly show different connection states of the test board 2 and the test power supply box 1.

Alternatively, in other embodiments, the first display unit 30 may include a first indicator light and/or a buzzer. The specific arrangement manner of the first indicator lamp is the same as that in the above embodiment, and will not be repeated here. When the first display unit 30 includes a buzzer, the buzzer may also be mounted on the test board 2. When the detection unit 31 judges that the first number of the signal receiving port 20 connected with the detection unit is different from the second number of the signal output port 10, the buzzer can be controlled to alarm so as to display communication errors and remind a tester of the error of the connecting channel between the current test board 2 and the test power supply box 1. Of course, when the detection unit 31 determines that the numbers of the signal receiving port 20 and the signal output port 10 connected thereto are the same, the buzzer can be controlled to maintain a normal operating state.

Optionally, fig. 5 is a schematic diagram of a partial structure of another dot screen test system according to an embodiment of the present invention, referring to fig. 5, in this embodiment, the connection detection module 3 further includes a plurality of second display units 33, where the second display units 33 are electrically connected to the connection switches 32 in a one-to-one correspondence manner (an electrical connection broken line between the two is not shown in fig. 5); let the connection switch 32 corresponding to the second display unit 33 be the current connection switch 32, the signal receiving port 20 with the same number as the third number of the current connection switch 32 be the current signal receiving port 20, and the second display unit 33 is configured to display the communication state of the current signal receiving port 20.

As shown in fig. 5, a plurality of second display units 33 are further disposed in each connection detection module 3, and the number of the second display units 33 is the same as the number of the connection switches 32, for example, the second display units 33 are m (4 in the drawing). As can be seen from the above embodiments, the connection switches 32 in the connection detection module 3 are in one-to-one correspondence with the numbers of the signal output ports 10, and in this embodiment, the connection switches 32 may be configured to control the second display unit 33 to display the communication state of the corresponding signal receiving port 20.

Specifically, the connection switch 32 electrically connected to each second display unit 33 may be defined as a current connection switch; the signal receiving port 20 which is the same as the number of the current connection switch 32 (i.e., the third number) is defined as the current signal receiving port. The connection switch 32 may be configured to control the second display unit 33 to display the communication state of the current signal receiving port.

The plurality of second display units 33 may have a plurality of fifth numbers, where the fifth numbers are the same as the first to fourth numbers, and the fifth numbers may be physical numbers (e.g., (1) - (4) ") on the right side of the second display units 33 in fig. 5) and are adhered or printed on the surrounding area of each second display unit 33. For example, the ith second display unit 33 electrically connected to the ith (1. Ltoreq.i.ltoreq.m) connection switch 32 is used to display the communication state of the ith signal receiving port 20. When the ith signal receiving port 20 is communicated with a certain signal output port 10, the ith connecting switch 32 is controlled to be closed, and the ith second display unit 33 is synchronously controlled to be communicated and displayed after the ith connecting switch 32 is closed, so that a tester is reminded of the communication of the channel corresponding to the ith signal receiving port 20. When the j (1. Ltoreq.j. Ltoreq.m) th signal receiving port 20 is not connected to the signal output port 10, the j-th connecting switch 32 is kept closed, and the j-th second display unit 33 is maintained in the original state and is not subjected to communication display; it is understood that maintaining the original state is also understood to be an unconnected display.

By configuring a second display unit 33 for each connection switch 32, a tester can intuitively determine the number of the current signal output port 10 (i.e. the test board 2) through the second display unit 33, so that the connection channel of the signal output port 10 is easier to identify, and the number identification is clearer.

Further, the second display unit 33 may include a display screen, an indicator light, and/or a buzzer, but is not limited thereto, and any element capable of displaying the communication condition is within the scope of the present protection implementation. The communication display may include, but is not limited to, a text display, a light display, and/or a sound display, etc.

It will be understood that, under normal conditions, after the test board 2 is connected to a certain signal output port 10, the connection switch 32 with the same number as the signal receiving port 20 of the test board 2 should be in a closed state, and the other connection switches 32 are in an open state, and the detection unit 31 only receives one connection signal; if the detecting unit 31 does not detect the communication signal or detects a plurality of communication signals at the same time, it is indicated that the state of the connection switch 32 is erroneously adjusted. Based on this, the embodiment of the present invention may further configure the detecting unit 31 to control the first display unit 30 to perform communication error display when the detecting unit does not receive the communication signal or receives two or more communication signals at the same time, so as to prompt the tester that the connection switch 32 may be erroneously adjusted, and avoid the connection switch 32 from being erroneously turned off or turned on to affect the connection condition detection.

Illustratively, in a possible embodiment, the second display unit 33 includes a second indicator light that emits light when the current connection switch 32 is closed to display that the current signal receiving port 20 is in a connected state.

The second indicator light is used for displaying the communication condition of the current signal output port 10, and after the current connection switch 32 (for example, the ith connection switch 32) is closed, the current second indicator light (for example, the ith second indicator light) emits light, so that the current signal receiving port 20 (for example, the ith signal receiving port 20) is displayed to a tester in a communication state.

Optionally, a plurality of connection switches 32 and a plurality of second indicator lamps corresponding to the connection switches 32 one by one are disposed in each connection detection module 3. In order to clearly show the numbers of the signal receiving ports 20 in the connected state, in this embodiment, different light emitting colors of different second indicator lamps in the same connection detection module 3 may also be provided. It may also be understood that the second indicator lamps for displaying different signal receiving ports 20 have different light emitting colors, so that when each signal receiving port 20 is communicated with the signal output port 10, the second indicator lamps corresponding to different signal receiving ports 20 can perform light emitting display with different colors, so that the tester can clearly distinguish the number of the current signal receiving port 20.

Alternatively, with continued reference to fig. 5, in a possible embodiment, it may be provided that the connection switch 32 and the second display unit 33 within the same connection detection module 3 are integrated on one connection detection board 6; the connection detection plate 6 is fixed to the test plate 2.

Specifically, the connection detecting board 6 is used to integrate the connection switches 32 and the second display units 33, so that the integration level of the connection switches 32 and the second display units 33 can be improved, and the device volume can be reduced. The connection detecting board 6 can be connected with the detecting unit 31 through an idle port on the testing board 2, so as to realize the electrical connection between each connection switch 32 and the detecting unit 31. In this arrangement, the overall integration level of the connection detection module 3 is high, and the arrangement is simple.

Alternatively, the embodiment of the invention is not limited to the fixing manner of connecting the detection board 6 and the test board 2, and those skilled in the art can set the fixing manner according to actual requirements. Illustratively, the connection detecting board 6 may be fastened to the test board 2, but not limited thereto, and the fastening manner is relatively simple and easy to detach.

In the dot screen test system provided by the invention, several connection situations of the test board 2 and the test power supply box 1 and corresponding display situations are described below. The following embodiments are described with the number of signal output ports 10 of the test power box 1 and the number of test boards 2 (signal output ports 10) of the dot screen test system being 4, but are not limited thereto in practice.

First case: fig. 6 is a connection condition display diagram of a dot screen test system according to an embodiment of the present invention, as shown in fig. 6, when connection channels are connected in a one-to-one correspondence manner as shown in fig. 6, an ith connection switch 32 on an ith test board 2 is controlled to be closed, and an ith second indicator lamp 33 electrically connected to the ith connection switch 32 on the ith test board 2 emits light (in the drawing, the second indicator lamp 33 filled with oblique lines represents the second indicator lamp 33 emitting light, and the second indicator lamp 33 not filled with the second indicator lamp 33 represents the second indicator lamp 33 not emitting light), so as to indicate that the current signal receiving port is in a connected state. Meanwhile, the detection units 31 on the ith test board 2 detect that the ith signal receiving port 20 is in one-to-one correspondence with the ith signal output port 10, and each detection unit 31 controls the corresponding first indicator lamp 30 to emit green light (the first indicator lamp 30 is filled with grids in the figure to emit green light), so that the current channels are correctly connected. Wherein i is an integer of 1 or more and 4 or less.

In the second case, fig. 7 is a connection condition display diagram of another dot screen test system according to the embodiment of the present invention, as shown in fig. 7, when each connection channel is connected in a one-to-one correspondence manner as shown in fig. 7, the ith connection switch 32 on the ith test board 2 is controlled to be closed, and the ith second indicator light 33 electrically connected to the ith connection switch 32 on the ith test board 2 emits light, so as to indicate that the current signal receiving port is in a connected state. Meanwhile, the detection unit 31 on the 1 st test board (1) detects that the 1 st signal receiving port 20 is communicated with the 2 nd signal output port 10, the numbers of the 1 st signal receiving port 20 and the 2 nd signal output port 10 are different, and the detection unit 31 controls the first indicator lamp 30 on the 1 st test board (1) to emit red light (the red light emitted by the first indicator lamp 30 is indicated by dotted filling in the figure) to indicate that the current channel is connected with errors; the detection unit 31 on the 2 nd test board (2) detects that the 2 nd signal receiving port 20 is communicated with the 1 st signal output port 10, the numbers of the 2 nd signal receiving port 20 and the 1 st signal output port 10 are different, and the detection unit 31 controls the first indicator lamp 30 on the 2 nd test board (2) to emit red light to indicate that the current channel is connected with errors; the detection unit 31 on the 3 rd test board (3) detects that the 3 rd signal receiving port 20 is communicated with the 3 rd signal output port 10, and the detection unit 31 controls the first indicator lamp 30 on the 3 rd test board (3) to emit green light to indicate that the 3 rd signal receiving port 20 is communicated with the 3 rd signal output port 10 correctly; the detection unit 31 on the 4 th test board (4) detects that the 4 th signal receiving port 20 is communicated with the 4 th signal output port 10, and the detection unit 31 controls the first indicator lamp 30 on the 4 th test board (4) to emit green light to indicate that the 4 th signal receiving port 20 is communicated with the 4 th signal output port 10 correctly.

Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, and that various obvious changes, rearrangements, combinations, and substitutions can be made by those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.

Claims

1. The spot screen test system is characterized by comprising a test power supply box, a plurality of test boards and a plurality of connection detection modules;

the test power supply box comprises a plurality of signal output ports;

2. The spot-screen testing system of claim 1, wherein the connection detection module comprises a first display unit and a detection unit, the detection unit being electrically connected to the signal receiving port and the first display unit, respectively;

and when the communication relation between the signal receiving port and the signal output port meets a preset communication relation, the detection unit controls the first display unit to carry out communication correct display.

3. The dot screen test system according to claim 2, wherein a plurality of the signal receiving ports have a plurality of different first numbers, a plurality of the signal outputting ports have a plurality of different second numbers, and when a communication relationship between the signal receiving ports and the signal outputting ports satisfies a preset communication relationship, the first numbers of the signal receiving ports and the second numbers of the signal outputting ports are the same;

the detection unit is used for determining the first number of the signal receiving port and the second number of the signal output port communicated with the signal receiving port, and controlling the first display unit to carry out communication correct display when the first number is identical with the second number.

4. The dot screen test system according to claim 3, wherein the number of the signal receiving ports and the number of the signal outputting ports are m, the plurality of the first numbers are respectively 1 to m, and the plurality of the second numbers are respectively 1 to m; the detection unit determines the second number of the signal output port communicated with the signal receiving port according to the signal received by the signal receiving port;

the connection detection module further comprises m connection switches, the connection switches are arranged in one-to-one correspondence with the signal receiving ports, the m connection switches are provided with m different third numbers, and the m third numbers are respectively 1-m;

the connecting switch is electrically connected with the detection unit, when the signal receiving port is communicated with one of the signal output ports, the connecting switch corresponding to the signal receiving port is controlled to be closed, and after the connecting switch is closed, a communication signal is sent to the detection unit; the detection unit determines the first number of the signal receiving port according to the communication signal;

wherein m is an integer, and m is greater than 1.

5. The spot-screen testing system of claim 4, wherein the test board further comprises m switch connection ports, the switch connection ports are electrically connected with the connection switches in a one-to-one correspondence, m switch connection ports have m different fourth numbers, and m fourth numbers are respectively 1-m;

The switch connecting port is also electrically connected with the detection unit, and when the connecting switch is closed, a communication signal is sent to the detection unit through the corresponding switch connecting port; the switch connection port for transmitting the communication signal is a first switch connection port, and the detection unit determines the third number of the connection switch according to the fourth number of the first switch connection port, so as to determine the first number of the signal receiving port.

6. The spot-screen testing system of claim 5, wherein the connection switch comprises a dial switch, the dial switch sends a first level signal to the detection unit when closed, and the switch connection port through which the first level signal is transmitted is the first switch connection port.

7. The spot screen testing system of claim 3, wherein the first display unit comprises a first indicator light mounted on the test board; and the detection unit is also used for controlling the first indicator lamp to emit first color light when the first number is the same as the second number so as to carry out communication correct display.

8. The dot screen test system according to claim 3, wherein the detecting unit is further configured to control the first display unit to display a communication error when the first number is different from the second number.

9. The spot-screen testing system according to claim 8, wherein the first display unit includes a first indicator light mounted on the test board, and the detecting unit is further configured to control the first indicator light to emit a second color light when the first number is different from the second number, so as to perform communication error display;

and/or, the first display unit comprises a buzzer, the buzzer is installed on the test board, and the detection unit is further used for controlling the buzzer to alarm when the first number is different from the second number so as to display communication errors.

10. The spot-screen testing system of claim 4, wherein the connection detection module further comprises a plurality of second display units, the second display units being electrically connected to the connection switches in a one-to-one correspondence;

the connection switch corresponding to the second display unit is made to be a current connection switch, the signal receiving port with the same number as the third number of the current connection switch is made to be a current signal receiving port, and the second display unit is used for displaying the communication state of the current signal receiving port.

11. The spot-screen testing system of claim 10, wherein the second display unit includes a second indicator light that emits light when the current connection switch is closed to display that the current signal receiving port is in a connected state.

12. The spot-screen testing system of claim 11, wherein the second indicator lights in the same connection detection module are different in color.

13. The spot-screen testing system of claim 10, wherein the connection switch and the second display unit are integrated on a connection detection board within the same connection detection module; the connection detection plate is fixed on the test plate.

14. The spot-screen testing system of claim 2, wherein the detection unit comprises a detection chip integrated on the test board.