Method for watching real-time state of static striking on reverse side of inverted display screen

Abstract

The invention discloses a method for watching the real-time state of static striking on the reverse side of an inverted display screen, and belongs to the field of display screen ESD striking detection, and the method comprises the following steps: building a scene for placing a display screen to be tested, placing the display screen, testing, observing the state of the display screen, and recording a reserved sample. The reflective mirror is adopted to observe the display surface of the display screen during the static test, so that the intuition and convenience during observation are improved, real-time observation is facilitated, the convenience during the static test on the reverse side of the inverted display screen is improved, the product to be tested does not need to be turned over manually through intuitive observation, and the production efficiency is improved. Errors of test results caused by human body static electricity are reduced, the test accuracy is improved, the test results are prevented from being affected by contact with products, direct observation is facilitated when a gun of static electricity is hit every time during testing, manual intervention and inversion are not needed, the test results can be visually observed, and then the static electricity test efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of ESD detection for display screens, and in particular to a method for observing the real-time state of electrostatic discharge on the reverse side of an inverted display screen. Background Art

[0002] The electrostatic test of a display screen is an important test step for evaluating the electrostatic discharge performance of the display screen. By simulating the electrostatic discharge situation in the actual use environment, the tolerance ability of the display screen can be tested to determine whether it meets the relevant standards and requirements. The electrostatic test of the display screen plays an important role in the product design and production process. It can ensure that the display screen shows good electrostatic discharge protection ability in actual use, and at the same time improve the reliability and stability of the product. Currently, when conducting the test, most non-contact detection methods are adopted. By bringing the test equipment close to the display screen, the electrostatic discharge when a human body touches the display screen is simulated to complete the electrostatic discharge test on the display screen. Now, for the accuracy of detection, the display screen often needs to be disassembled during the detection, resulting in the display screen having no legs. And the circuit board and other components of the display screen are on the back of the display screen. Therefore, during the test, the display screen needs to be placed upside down on the platform, and the electrostatic discharge test is carried out from above. However, during the test, every time a shot is fired, the display screen needs to be manually flipped to observe the display state of the display screen for confirmation. But when flipping, it is necessary to touch the product to be tested by hand, and during the contact process, due to the static electricity carried by the human body, the test results will be affected by errors, which is not convenient for observation and operation, and the detection efficiency is relatively slow. Summary of the Invention

[0003] Therefore, the present invention provides a method for observing the real-time state of electrostatic discharge on the reverse side of an inverted display screen to solve the above problems.

[0004] The present invention provides the following technical solution: A method for observing the real-time state of electrostatic discharge on the reverse side of an inverted display screen, the method comprising the following steps: S1. Scene construction, constructing a scene for placing the display screen to be tested; S2. Placing the display screen, placing the display screen in the constructed scene and placing it upside down, and removing the back panel of the display screen to facilitate the electrostatic discharge operation, and it is convenient to use an external electrostatic test experimental gun to directly apply static electricity to the circuit board of the display screen to be tested; S3. Conducting the test, performing ESD detection on the display screen to be tested, and performing ESD detection on multiple connection ports and solder joints in the display screen to be tested. During the test, according to the test requirements, adjust the electrostatic discharge intensity of the external electrostatic test experimental gun and gradually increase it; S4. Observe the status of the display screen. After each ESD shot, observe the status of the display surface of the display screen in real time through the constructed scenario. After each shot, wait for 10 to 15 seconds and then observe the display status of the display screen. Avoid people approaching, as the static electricity carried by the human body may act on the display screen to be tested and affect the test results. When observing, keep the distance between the human body and the display screen more than 50 cm. S5. Record the samples. Collect images of the display surface of the display screen after each static electricity shot for later inspection. When observing, use an external video or photography device to collect test images for easy inspection, recording, and archiving after the test.

[0005] As a preferred solution of the present invention, in step S1, when constructing the scenario, the scenario includes a workbench surface. A reflector is inlaid and installed on the upper surface of the workbench surface. The reflector is made of a coupled metal plate material and its surface is polished to improve the reflection effect of the reflector, thereby facilitating the intuitive display of the display status of the display screen. And a static electricity mat for placing the display screen is fixedly installed at the upper end of the workbench surface. One side of the static electricity mat is connected to a wire. When placing, the display screen to be tested is placed upside down on the static electricity mat, and the display status of the display screen to be tested can be reflected through the reflector. When applying static electricity to the display screen to be tested, observe whether there are problems such as display screen flickering, black screen, color screen, abnormal brightness, etc. through the reflector.

[0006] As a preferred solution of the present invention, in step S1, when constructing the scenario, a sealed room is used for construction. The temperature and humidity inside the room are adjusted to room temperature. The temperature inside the room is controlled at 23°C ± 3°C, and the relative humidity is 50%RH ± 5%RH. And adjust the brightness inside the room so that the brightness inside the room is lower than the display brightness of the display screen. By dimming the brightness inside the room, when the display status of the display screen changes, it can be observed more intuitively, avoiding missing slight changes and improving the test accuracy.

[0007] As a preferred solution of the present invention, in step S2, when placing the display screen, wear anti-static gloves and place the display screen upside down with the display side in the constructed scenario. Remove the housing on the back of the display screen, expose the circuit board inside the display screen to be tested above, and conduct static electricity testing from above to reduce the impact of manual operation on the test results and improve the test accuracy.

[0008] As a preferred solution of the present invention, in step S3, when testing, an electrostatic test gun is used to perform static electricity detection on the display screen to be tested, and non-contact detection is adopted during the detection. The electrostatic gun is used to simulate the electrostatic discharge when a human body contacts the display screen, and the electrostatic emission end of the electrostatic test gun is directed to the connection end or the exposed position of the solder joint of the display screen to perform static electricity discharge detection. The non-contact testing method is adopted to avoid the impact of external equipment or connection problems on the test results, and the operation is convenient without the need for connection.

[0009] As a preferred solution of the present invention, in step S4, when observing the state of the display screen, the observation is performed through the reflector embedded in the work surface, the reflector reflects the reaction of the display screen when it is subjected to static electricity, and the abnormality of the display screen is visually observed through the gap between the reflector and the placement component, which facilitates intuitive observation of the state of the display screen during testing, eliminates the need to manually flip the display screen, and improves the efficiency of the test.

[0010] As a preferred solution of the present invention, in step S5, when recording and retaining samples, an external video camera or camera is used to store samples of the state of the display screen after each shot, and the static electricity location, static electricity intensity and whether the state of the display screen is abnormal are marked in the stored samples, so as to facilitate later review of the test results and facilitate archiving and organization.

[0011] The beneficial effects of the present invention are as follows: 1. By using a reflector to observe the display surface of the display screen during the static electricity test, the intuitiveness and convenience of observation are improved, which is convenient for real-time observation, thereby improving the convenience of static electricity testing on the back of the inverted display screen.

[0012] 2. Through intuitive observation, there is no need to manually flip the product to be tested, which can reduce the error caused by human static electricity on the test results, improve the accuracy of the test, and avoid affecting the test results due to contact with the product.

[0013] 3. When testing, it is convenient to observe the static electricity each time, without manual intervention and reversal, so that the test results can be viewed intuitively, thereby improving the efficiency of static electricity testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings.

[0015] Figure 1 It is a flow chart of the present invention; Figure 2 It is a schematic diagram of the exploded structure of the working table position in the first embodiment of the present invention; Figure 3It is a structural schematic diagram of the position of the work surface in the second embodiment of the present invention; Figure 4 It is a structural schematic diagram of the component placement position of the second embodiment of the present invention.

[0016] Legend: 1. Work surface; 2. Reflector; 3. Placement assembly; 31. Slide; 32. Adjustment screw; 33. Elastic rod; 34. Placement rack; 35. Anti-static mat; 36. Connecting ear; 4. Wires. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] Specific embodiments are given below: Embodiment 1: like Figure 1 As shown, a method for viewing the real-time status of static electricity on the back of an inverted display screen comprises the following steps: S1. Scene construction: building a scene for placing the display screen to be tested; S2. Place the display screen in the constructed scene, turn it upside down, and remove the back panel of the display screen to facilitate the anti-static operation and to facilitate the use of an external electrostatic test gun to directly apply static electricity to the circuit board of the display screen to be tested; S3, conduct the test, conduct ESD test on the display screen to be tested, and conduct ESD test on multiple connection ports and solder joints in the display screen to be tested. When conducting the test, adjust the static electricity intensity of the external static electricity test gun according to the test requirements, and increase it step by step; S4. Observe the status of the display screen. After each ESD shot in the built scene, observe the status of the display screen in real time. After each shot, observe the display status of the display screen after an interval of 10 to 15 seconds to avoid people getting close to the display screen, which will cause the static electricity carried by the human body to act on the display screen to be tested and affect the test results. During observation, the distance between the human body and the display screen should be controlled to be more than 50 cm; S5. Record and keep samples, collect images of the display screen after each shot of static electricity, and conduct later inspection. When observing, use external video or photo equipment to collect test images, so as to facilitate inspection and record archiving after the test.

[0019] like Figure 1 andFigure 2 As shown, when the scene is built, the scene includes a work surface 1, and a reflector 2 is inlaid on the upper surface of the work surface 1. The reflector 2 is made of a coupled metal plate and is surface polished to improve the reflective effect of the reflector 2, so as to facilitate the intuitive display of the display status of the display screen, and an electrostatic mat 35 for placing the display screen is fixedly installed on the upper end of the work surface 1, and a conductive wire 4 for grounding is connected to one side of the electrostatic mat 35. When placed, the display screen to be tested is placed upside down on the electrostatic mat 35, and the display status of the display screen to be tested is reflected by the reflector 2. When the display screen to be tested is subjected to static electricity, it is observed through the reflector 2 to see whether there are problems such as flickering, black screen, flowery screen, abnormal brightness, etc.

[0020] like Figure 1 As shown, in step S1, when setting up the scene, a sealed room is used for setting up, and the temperature and humidity inside the room are adjusted to room temperature, the temperature inside the room is controlled at 23℃±3℃, and the relative humidity is 50%RH±5%RH, and the brightness inside the room is adjusted so that the brightness inside the room is lower than the display brightness of the display screen. By dimming the brightness inside the room, when the display state of the display screen changes, it can be observed more intuitively, avoiding slight changes that lead to omissions, and improving the test accuracy. In step S2, when placing the display screen, wear anti-static gloves, and turn the display side of the display screen upside down in the constructed scene, remove the shell on the back of the display screen, expose the circuit board inside the display screen to be tested on the top, and perform an anti-static test from the top to reduce the influence of manual operation on the test results. Influence, improve the test accuracy, in step S3, when testing, an electrostatic test gun is used to perform static electricity detection on the display screen to be tested, and non-contact detection is adopted during the detection. The static electricity gun is used to simulate the static electricity discharge when the human body contacts the display screen, and the static electricity emission end of the static electricity test gun is used to discharge static electricity on the connection end or the exposed position of the solder joint of the display screen. The non-contact test method is adopted to avoid the influence of external equipment or connection problems on the test results, and it is convenient to operate without connection. In step S5, when recording and keeping samples, an external camera or camera is used to store the state of the display screen after each gun shooting, and the static electricity shooting position, static electricity strength and whether the state of the display screen is abnormal are marked in the stored samples, so as to facilitate the later review of the test results, and facilitate archiving and sorting.

[0021] Embodiment 2: like Figure 3 and Figure 4As shown, based on the first embodiment, a placement component 3 is installed on the workbench surface 1. During testing, first adjust the position and height of the placement component 3. After the adjustment is completed, place the display screen to be tested upside down on the placement component 3, with the display side of the display screen to be tested facing the position of the reflector 2. Then, during testing, the display state of the display screen to be tested can be reflected through the reflector 2, and by observing through the reflector 2, check whether there are problems such as display screen flickering, black screen, color screen, abnormal brightness, etc. when applying static electricity to the display screen to be tested. The placement component 3 includes a carriage 31. The carriage 31 is slidably clamped on both sides of the workbench surface 1. At both ends of one side of the carriage 31, adjusting screws 32 are threadedly connected. An elastic rod 33 made of rubber is fixedly installed at the upper end of the adjusting screw 32, and a placement rack 34 is installed between the upper ends of the elastic rods 33. The placement rack 34 is rotatably connected to the elastic rod 33 using a plain bearing. The static electricity mat 35 is inlaid on the placement rack 34. The display screen to be tested is placed upside down on the static electricity mat 35. The static electricity mat 35 is made of a transparent plastic pad material, thereby reducing the static electricity influence between the display screen to be tested and the placement component 3. There is a gap between the static electricity mat 35 and the reflector 2. Through this gap, the display surface of the display screen reflected on the reflector 2 can be observed. Through the carriage 31, it is convenient to adjust the position of the placement component 3 on the workbench surface 1. After the adjustment, it is convenient to clean the surface of the reflector 2, improving the observation effect during long-term use, avoiding the influence of dust, and through the elastic rod 33, when rotating the height of the adjusting screw 32, the placement rack 34 can be slightly tilted. Through the tilt angle, it is more convenient to directly observe the display state of the display screen through the reflector 2. And through the adjusting screw 32, it is convenient to adjust the gap height between the placement rack 34 and the workbench surface 1. Through the position of the gap, observe the abnormalities of the display screen. At both ends of one side of the carriage 31, connecting ears 36 with threaded pipes are fixedly installed, and the adjusting screw 32 is threadedly connected to the connecting ear 36. A handwheel is fixedly installed at the lower end of the adjusting screw 32. By turning the handwheel, it is convenient to rotate the adjusting screw 32, and then the adjusting screw 32 moves up and down in the internal threaded pipe of the connecting ear 36, achieving the effect of adjusting the height of the placement rack 34. In step S4, when observing the state of the display screen, observe through the reflector 2 embedded in the workbench surface 1. The reflector 2 reflects the reaction of the display screen when receiving static electricity, and through the gap between the reflector 2 and the placement component 3, directly observe the abnormalities of the display screen, facilitating the direct observation of the state of the display screen during testing, without the need for manual flipping of the display screen, and also improving the testing efficiency.

[0022] The above has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for viewing the real-time state of reverse electrostatic discharge on the reverse side of a display screen, characterized in that, The method includes the following steps: S1. Scene construction: Construct a scene for placing the display screen to be tested. S2. Place the display screen: Place the display screen in the constructed scene, invert it, and remove the backplane of the display screen. S3. Conduct tests: Conduct ESD detection on the display screen to be tested, and conduct ESD detection on multiple connection ports and solder joints in the display screen to be tested. S4. Observe the state of the display screen: After each ESD shot through the constructed scene, observe the state of the display surface of the display screen in real time. S5. Record and retain samples: Collect images of the display surface of the display screen after each static electricity shot for later inspection.

2. A method for viewing the real-time state of reverse electrostatic charging on the reverse side of a display screen according to claim 1, characterized in that: In step S1, when constructing the scene, the scene includes a workbench surface (1). A reflecting mirror (2) is inlaid and installed on the upper surface of the workbench surface (1). The reflecting mirror (2) is made of a coupled metal plate material and its surface is polished. And an electrostatic mat (35) for placing the display screen is fixedly installed at the upper end of the workbench surface (1). When placing, the display screen to be tested is inverted on the electrostatic mat (35), and a wire (4) is connected to one side of the electrostatic mat (35).

3. A method for viewing the real-time state of electrostatic discharge on the reverse side of a display screen during reverse playback, characterized in that: In step S1, when constructing the scene, a sealed room is used for construction. The temperature and humidity inside the room are adjusted to room temperature, and the brightness inside the room is adjusted so that the brightness inside the room is lower than the display brightness of the display screen.

4. A method for viewing the real-time state of reverse electrostatic charging on the reverse side of a display screen according to claim 1, characterized in that: In step S2, when placing the display screen, wear anti-static gloves on the hands, invert the display side of the display screen in the constructed scene, remove the housing on the reverse side of the display screen, expose the circuit board inside the display screen to be tested above, and conduct static electricity testing from above.

5. A method for viewing the real-time state of electrostatic discharge on the reverse side of a display screen during reverse playback, characterized in that: In step S3, when conducting tests, use an electrostatic test gun to conduct ESD detection on the display screen to be tested. And during the detection, non-contact detection is adopted. Through the electrostatic gun, simulate the electrostatic discharge when the human body touches the display screen. The electrostatic emission end of the electrostatic test gun faces the connection end or the exposed position of the solder joint of the display screen to conduct static electricity detection.

6. A method for viewing the real-time state of electrostatic discharge on the reverse side of a display screen during reverse playback, according to claim 3, characterized in that: In step S4, when observing the state of the display screen, observe through the reflecting mirror (2) embedded in the workbench surface (1). The reflecting mirror (2) reflects the reaction of the display screen when it is affected by static electricity, and the abnormality of the display screen can be directly observed through the gap between the reflecting mirror (2) and the electrostatic mat (35).

7. A method for viewing the real-time state of electrostatic discharge on the reverse side of a display screen during reverse playback, characterized in that: In step S5, when recording and retaining samples, use an external camera or camera to save the state of the display screen after each shot, and mark the static electricity application position, static electricity application intensity, and whether the state of the display screen is abnormal in the saved samples.

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