Electrostatic bracelet module for testing liquid crystal display screen

Abstract

The utility model relates to an electrostatic bracelet module for testing a liquid crystal display screen. The static bracelet module for testing the liquid crystal display screen comprises a power supply input end, a detection module, a switch module, a bracelet detection module, a driving module and a material placing module, wherein the detection module is electrically connected with the power supply input end; the switch module is electrically connected with the power supply input end and the detection module respectively; the bracelet detection module comprises an electrostatic plate, the first end and the second end of the electrostatic plate are electrically connected with the switch module, the third end of the electrostatic plate is grounded, and the warning unit is electrically connected with the fourth end and the fifth end of the electrostatic plate; the driving module comprises a first mainboard and a second mainboard, the first mainboard is electrically connected with the switch module, and the second mainboard is electrically connected with the first mainboard; the material placing module is electrically connected with the first main board. According to the scheme provided by the invention, when an operator does not wear an electrostatic bracelet or performs hot-line operation, the test frame is not electrified, so that the liquid crystal display screen is effectively protected.

Description

Technical Field

[0001] The utility model relates to the technical field of display screens, in particular to an electrostatic wristband module for testing liquid crystal display screens. Background Art

[0002] After the production of LCD screens, it is usually necessary to test them to ensure that there are no problems with their performance and other indicators. In related technologies, LCD screens are usually placed on a test stand for testing and fixed with a pressure plate. However, due to negligence, operators may forget to wear anti-static wristbands, and during the test, the static electricity from the human body may damage the internal circuits of the LCD screen. At the same time, some operators will open the pressure plate to remove the LCD screen without turning off the power supply motherboard during the test, which will also damage the internal circuits of the LCD screen. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide an anti-static wristband module for testing a liquid crystal display screen, which can effectively protect the liquid crystal display screen by turning off the power to the test stand when the operator does not wear the anti-static wristband or operates with power.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] The first aspect of the present application provides an anti-static wristband module for testing a liquid crystal display screen, comprising: a power input terminal; a detection module, the detection module is electrically connected to the power input terminal; a switch module, the switch module is electrically connected to the power input terminal and the detection module respectively; a wristband detection module, the wristband detection module comprises an anti-static plate and a warning unit, the first end and the second end of the anti-static plate are electrically connected to the switch module respectively, the third end of the anti-static plate is grounded, and the warning unit is electrically connected to the fourth end and the fifth end of the anti-static plate respectively; a driving module, the driving module comprises a first main board and a second main board, the first main board is electrically connected to the switch module, and the second main board is electrically connected to the first main board; a material placing module, the material placing module is electrically connected to the first main board

[0006] The detection module comprises an infrared probe, and the infrared probe is electrically connected to the power input terminal.

[0007] The switch module includes a first relay, a first end of the first relay is electrically connected to the power input end, a second end of the first relay is electrically connected to the infrared probe, and a third end of the first relay is electrically connected to the first end of the electrostatic plate.

[0008] The warning unit includes an indicator light and a buzzer, the indicator light is electrically connected to the fourth end of the electrostatic plate, and the buzzer is electrically connected to the fifth end of the electrostatic plate.

[0009] The bracelet detection module also includes a bracelet interface, and the bracelet interface is electrically connected to the sixth end of the electrostatic plate.

[0010] The switch module further includes a second relay, a first end of the second relay is electrically connected to the second end of the electrostatic plate, a second end of the second relay is electrically connected to the first end of the first relay, and a third end of the second relay is grounded.

[0011] It also includes a power switch, which is electrically connected to the fourth end of the second relay.

[0012] It also includes a first touch switch, wherein a first end of the first touch switch is electrically connected to the power switch, and a second end of the first touch switch is electrically connected to the first mainboard.

[0013] The material placement module includes a motor and a pressing plate. The motor is electrically connected to the first main board, and the pressing plate is connected to the motor.

[0014] The driving module further includes a second touch switch, a first end of the second touch switch is electrically connected to the first mainboard, and a second end of the second touch switch is electrically connected to the second mainboard.

[0015] Compared with the prior art, the utility model has at least the following advantages:

[0016] 1. When the wristband is not connected to the anti-static board, the warning unit connected to the anti-static board will give a prompt to notify the operator to wear an anti-static wristband;

[0017] 2. The material placement module is controlled by the first main board. During the test, if no specific signal is given to the first main board, the material placement module will not work and the operator will not be able to take out the product from the material placement module. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.

[0019] Figure 1 This is a functional module diagram of an electrostatic wristband module for testing a liquid crystal display screen in one embodiment of the utility model;

[0020] Figure 2 This is a circuit diagram of an electrostatic wristband module for testing a liquid crystal display screen in one embodiment of the utility model;

[0021] Figure 3 The figure is a schematic structural diagram of an electrostatic wristband module for testing a liquid crystal display screen in one embodiment of the utility model. DETAILED DESCRIPTION

[0022] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0023] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0024] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, or a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0025] After the production of LCD screens, it is usually necessary to test them to ensure that there are no problems with their performance and other indicators. In related technologies, LCD screens are usually placed on a test stand for testing and fixed with a pressure plate. However, due to negligence, operators may forget to wear anti-static wristbands, and during the test, the static electricity from the human body may damage the internal circuits of the LCD screen. At the same time, some operators will open the pressure plate to remove the LCD screen without turning off the power supply motherboard during the test, which will also damage the internal circuits of the LCD screen.

[0026] In response to the above problems, an embodiment of the present application provides an anti-static wristband module for testing a liquid crystal display screen, which can effectively protect the liquid crystal display screen by disconnecting the power supply to the test stand when the operator is not wearing the anti-static wristband or operating with power.

[0027] The technical solution of the embodiments of the present application is described in detail below with reference to the accompanying drawings.

[0028] See also Figure 1 and Figure 2, an electrostatic wristband module for testing a liquid crystal display screen, comprising: a power input terminal 100, a detection module 200, a switch module 300, a wristband detection module 400, a driving module 500 and a placing module 600, wherein the detection module 200 is electrically connected to the power input terminal 100; the switch module 300 is electrically connected to the power input terminal 100 and the detection module 200 respectively; the wristband detection module 400 comprises an electrostatic plate 410 and an alarm unit 420, wherein the first end and the second end of the electrostatic plate 410 are electrically connected to the switch module 300 respectively, the third end of the electrostatic plate 410 is grounded, and the alarm unit 420 is electrically connected to the fourth end and the fifth end of the electrostatic plate 410 respectively; the driving module 500 comprises a first main board 510 and a second main board 520, wherein the first main board 510 is electrically connected to the switch module 300, and the second main board 520 is electrically connected to the first main board 510; and the placing module 600 is electrically connected to the first main board 510.

[0029] It should be noted that the detection module 200 is used to sense objects, the power input terminal 100 is used to input a voltage of 7.5V, the switch module 300 plays the role of circuit conduction or closure, the bracelet detection module 400 is used to detect whether the bracelet is connected, and the drive module 500 is used to control the material module 600, and the material module 600 is used to place the liquid crystal display. Further, the first mainboard 510 is a power control board for controlling the material module 600, the second mainboard 520 is a liquid crystal display driving mainboard for lighting the liquid crystal display, and the electrostatic board 410 is the mainboard for detecting the bracelet. Further, when the bracelet is not connected to the electrostatic board 410, the warning unit 420 connected to the electrostatic board 410 will prompt to notify the operator to wear an anti-static bracelet. At the same time, the material module 600 is controlled by the first mainboard 510. During the test process, if no specific signal is given to the first mainboard 510, the material module 600 will not work, and the operator cannot take out the product from the material module 600.

[0030] See also Figure 2 In one embodiment, the detection module 200 includes an infrared probe 210, and the infrared probe 210 is electrically connected to the power input terminal 100. Specifically, the switch module 300 includes a first relay 310, a first end of the first relay 310 is electrically connected to the power input terminal 100, a second end of the first relay 310 is electrically connected to the infrared probe 210, and a third end of the first relay 310 is electrically connected to a first end of the electrostatic plate 410. Specifically, the switch module 300 also includes a second relay 320, a first end of the second relay 320 is electrically connected to a second end of the electrostatic plate 410, a second end of the second relay 320 is electrically connected to a first end of the first relay 310, and a third end of the second relay 320 is grounded.

[0031] It should be noted that the infrared probe 210 uses infrared rays to detect whether a wristband is approaching, and the first relay 310 and the second relay 320 play a role of conducting the circuit.

[0032] See also Figure 2 In one embodiment, the warning unit 420 includes an indicator light 421 and a buzzer 422, the indicator light 421 is electrically connected to the fourth end of the electrostatic plate 410, and the buzzer 422 is electrically connected to the fifth end of the electrostatic plate 410. The wristband detection module 400 also includes a wristband interface 430, which is electrically connected to the sixth end of the electrostatic plate 410.

[0033] It should be noted that the wristband interface 430 is used to connect an anti-static wristband, and the indicator light 421 and the buzzer 422 serve as warnings.

[0034] See also Figure 2 and Figure 3 In one embodiment, the drive module 500 further includes a power switch 700, which is electrically connected to the fourth end of the second relay 320. Specifically, the drive module 500 further includes a first touch switch 800, a first end of which is electrically connected to the power switch 700, and a second end of which is electrically connected to the first mainboard 510. Specifically, the drive module 500 further includes a second touch switch 530, a first end of which is electrically connected to the first mainboard 510, and a second end of which is electrically connected to the second mainboard 520.

[0035] It should be noted that the power switch 700 is the power switch of the test stand 1000 .

[0036] See also Figure 2 and Figure 3 In one embodiment, the material placement module 600 includes a motor 610 and a pressing plate 620 . The motor 610 is electrically connected to the first main board 510 , and the pressing plate 620 is connected to the motor 610 .

[0037] It should be noted that the pressing plate 620 is arranged on the test frame 1000. The pressing plate 620 adopts an inward buckled handleless design. The pressing plate 620 needs to be rotated open by the torque mechanism of the motor 610, so it cannot be opened manually.

[0038] The circuit design principle of the present application is described in detail below: a 7.5V voltage is input to the power input terminal 100, a switch is connected in series to the power input terminal 100, and this switch is the first relay 310. The 7.5V voltage also powers the infrared probe 210. When the infrared probe 210 senses an object, the infrared signal line is pulled low and the positive pole of the voltage is used to power the first relay 310. The first end of the first relay 310 is closed and turned on, and the electrostatic plate 410 is energized. At this time, when the human body anti-static bracelet is not connected or the ground wire is not grounded, the indicator light 421 flashes red and the buzzer 422 alarms. When the electrostatic wristband is connected, the indicator light 421 of the electrostatic board 410 lights up green, and at the same time, the electrostatic board 410 provides a 5V signal and the negative pole of the power supply to the second relay 320, and the second relay 320 conducts and outputs a 7.5V voltage to the first main board 510. At this time, the first main board 510 is powered on, and the power switch 700 of the test stand 1000 is closed. Since the first touch switch 800 is installed under the pressure plate 620 of the test stand 1000, the pressure plate 620 is pressed, and the first touch switch 800 is closed and turned on, and the first main board 510 supplies power to the second main board 520 to light up the liquid crystal display module. When the test is completed, press the second touch switch 530, and use the external program to send signals to the first main board 510 and the second main board 520 at the same time, so that the second main board 520 can perform a soft power-off on the liquid crystal display module. The so-called soft power-off refers to powering off the second main board 520 while the first main board 510 is not powered off. Furthermore, the first main board 510 delays 1 second to cut off the power to the second main board 520, and simultaneously supplies power to the motor 610 for 1 second. The motor 610 rotates to open the pressing plate 620, and the operator takes the material.

[0039] The scheme of the present application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the descriptions of the various embodiments have their own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments. Those skilled in the art should also be aware that the actions and modules involved in the specification are not necessarily required for the present application. In addition, it can be understood that the steps in the method of the embodiment of the present application can be adjusted in order, merged and deleted according to actual needs, and the modules in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0040] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. An electrostatic wristband module for testing a liquid crystal display screen, characterized in that: include: Power input terminal; A detection module, the detection module is electrically connected to the power input terminal; A switch module, wherein the switch module is electrically connected to the power input terminal and the detection module respectively; A wristband detection module, the wristband detection module comprising an electrostatic plate and a warning unit, the first end and the second end of the electrostatic plate are electrically connected to the switch module respectively, the third end of the electrostatic plate is grounded, and the warning unit is electrically connected to the fourth end and the fifth end of the electrostatic plate respectively; A driving module, the driving module comprising a first main board and a second main board, the first main board is electrically connected to the switch module, and the second main board is electrically connected to the first main board; A material placing module is electrically connected to the first mainboard.

2. The electrostatic wristband module for testing a liquid crystal display screen according to claim 1, characterized in that: The detection module comprises an infrared probe, and the infrared probe is electrically connected to the power input terminal.

3. The electrostatic wristband module for testing a liquid crystal display screen according to claim 2, characterized in that: The switch module includes a first relay, a first end of the first relay is electrically connected to the power input end, a second end of the first relay is electrically connected to the infrared probe, and a third end of the first relay is electrically connected to the first end of the electrostatic plate.

4. The electrostatic wristband module for testing a liquid crystal display screen according to claim 1, characterized in that: The warning unit includes an indicator light and a buzzer, the indicator light is electrically connected to the fourth end of the electrostatic plate, and the buzzer is electrically connected to the fifth end of the electrostatic plate.

5. The electrostatic wristband module for testing a liquid crystal display screen according to claim 1, characterized in that: The bracelet detection module also includes a bracelet interface, and the bracelet interface is electrically connected to the sixth end of the electrostatic plate.

6. The electrostatic wristband module for testing a liquid crystal display screen according to claim 3, characterized in that: The switch module further includes a second relay, a first end of the second relay is electrically connected to the second end of the electrostatic plate, a second end of the second relay is electrically connected to the first end of the first relay, and a third end of the second relay is grounded.

7. The electrostatic wristband module for testing a liquid crystal display screen according to claim 6, characterized in that: It also includes a power switch, which is electrically connected to the fourth end of the second relay.

8. The electrostatic wristband module for testing a liquid crystal display screen according to claim 7, characterized in that: It also includes a first touch switch, wherein a first end of the first touch switch is electrically connected to the power switch, and a second end of the first touch switch is electrically connected to the first mainboard.

9. The electrostatic wristband module for testing a liquid crystal display screen according to claim 1, characterized in that: The material placement module includes a motor and a pressing plate. The motor is electrically connected to the first main board, and the pressing plate is connected to the motor.

10. The electrostatic wristband module for testing a liquid crystal display screen according to claim 1, characterized in that: The driving module further includes a second touch switch, a first end of the second touch switch is electrically connected to the first mainboard, and a second end of the second touch switch is electrically connected to the second mainboard.

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