Liquid crystal screen FOG testing device

Abstract

The utility model provides a liquid crystal screen FOG testing device, and relates to the technical field of electronic equipment testing. The testing device for the FOG of the liquid crystal screen comprises a panel, a bottom plate and a cover plate assembly, the cover plate assembly comprises an upper cover plate and a rear cover plate, the panel, the upper cover plate and the rear cover plate are sequentially connected and installed, the rear cover plate is installed on the bottom plate, the panel is installed on the bottom plate, and the inclination angle between the panel and the bottom plate is a preset inclination angle; the panel is provided with a liquid crystal screen backlight module, the bottom plate is provided with a control circuit board, when a to-be-tested liquid crystal screen FOG is tested, the control circuit board is electrically connected with the liquid crystal screen backlight module and the to-be-tested liquid crystal screen FOG, and the to-be-tested liquid crystal screen FOG is detachably installed on the liquid crystal screen backlight module. The testing device for the FOG of the liquid crystal screen can achieve the technical effect of improving the testing work efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment testing, and in particular to a testing device for liquid crystal screen FOG. Background Art

[0002] The current FOG (FPC on Glass) process for LCD screens involves bonding an FPC (Flexible Printed Circuit) to an LCD (Liquid Crystal Display). During LCD production, FOG testing is required to prevent defective products from being passed on to the next process, requiring the use of test fixtures. Quality control of LCD screens is crucial before shipment, especially regarding electrical performance. Testing requires multiple test modes to ensure reliable results. Typically, factory testing involves checking all-white, all-black, and red, green, blue, and gray. A full white screen can detect dark spots and discolorations; a full black screen can detect bright spots; and the red, green, and blue screens make it easier to detect defective pixels. However, existing LCD cable adapters are inconvenient for connecting to LCD cables, and the flat surface of the fixture makes it difficult for testers to observe the display, impacting testing efficiency. Utility Model Content

[0003] The purpose of this application is to provide a test device for liquid crystal screen FOG, which can achieve the technical effect of improving the efficiency of testing work.

[0004] The present application provides a test device for liquid crystal screen FOG, including a panel, a base plate and a cover plate assembly;

[0005] The cover assembly includes an upper cover and a rear cover. The panel, the upper cover, and the rear cover are sequentially connected and installed. The rear cover is mounted on the bottom plate, and the panel is mounted on the bottom plate. The inclination angle between the panel and the bottom plate is a preset inclination angle.

[0006] The panel is provided with a liquid crystal screen backlight module, and the bottom plate is provided with a control circuit board. When the liquid crystal screen FOG to be tested is tested, the control circuit board is electrically connected to the liquid crystal screen backlight module and the liquid crystal screen FOG to be tested respectively, and the liquid crystal screen FOG to be tested is detachably installed on the liquid crystal screen backlight module.

[0007] In the above implementation process, the panel, base plate, upper cover plate and rear cover plate in the LCD screen FOG test device are connected and installed respectively to form a device for testing the LCD screen FOG. The LCD screen backlight module is set on the panel, and the control circuit board is set on the base plate. The control circuit board is electrically connected to the LCD screen backlight module and the LCD screen FOG to be tested respectively, so as to test the LCD screen FOG. By installing the panel and the base plate at a preset tilt angle, it is convenient for the tester to observe the picture during the LCD screen FOG test, thereby achieving the technical effect of improving the test work efficiency.

[0008] Furthermore, the base plate is also provided with an LCD cable adapter plate and an LCD cable trough. The LCD cable adapter plate is electrically connected to the control circuit board and the LCD FOG to be tested, respectively. The LCD cable trough is matched with the LCD cable adapter plate, and the width of the LCD cable trough matches the cable width of the LCD FOG to be tested, and the depth of the LCD cable trough matches the seat height of the LCD cable adapter plate.

[0009] In the above implementation process, the slot width of the LCD cable trough is designed to be consistent with the cable width of the LCD FOG, and the depth of the LCD cable trough is consistent with the height of the FPC seat on the LCD cable adapter board, so that the tester can easily insert the LCD FOG cable directly into the FPC seat on the LCD cable adapter board along the slot of the LCD cable trough, saving the cable alignment time and improving the test work efficiency.

[0010] Furthermore, the bottom plate is also provided with an LCD cable extension line, and the LCD cable extension line is electrically connected to the LCD cable adapter board.

[0011] In the above implementation process, the LCD cable adapter board is connected to the LCD cable extension cable to extend the LCD cable interface of the control circuit board and lead out the interface position of the control circuit board, thereby facilitating the connection of the LCD FOG to be tested to the control circuit board.

[0012] Furthermore, the base plate is also provided with a power interface and a wire, and the power interface is electrically connected to the control circuit board through the wire.

[0013] In the above implementation process, the power interface is connected to the power supply, and the power is provided to the control circuit board through the wire.

[0014] Furthermore, the panel is also provided with a previous page button, a pause button, a next page button, a switch button and a display circuit board, and the previous page button, the pause button, the next page button, the switch button and the display circuit board are electrically connected to the control circuit board respectively.

[0015] In the above implementation process, by setting the previous page button, pause button, and next page button, it is convenient for the tester to manually adjust the display screen of the LCD screen FOG to be tested, thereby facilitating the test; by setting the switch button, the control circuit board will issue a power on and off command to switch the power switch state of the display circuit board.

[0016] Furthermore, the panel is further provided with a dustproof cover, and the dustproof cover is installed on the surface of the backlight module.

[0017] In the above implementation process, the backlight module is covered by a dustproof cover to prevent dust and stains from affecting the observation test.

[0018] Furthermore, the cover plate assembly also includes side cover plates, which are fixedly mounted to the panel, the upper cover plate, the rear cover plate, and the bottom plate respectively.

[0019] Furthermore, the side cover plate is provided with a through hole.

[0020] In the above implementation process, the side cover is provided with through holes to facilitate ventilation and heat dissipation of the built-in circuit board.

[0021] Furthermore, the preset tilt angle is 40° to 60°.

[0022] Furthermore, the preset tilt angle is 50°.

[0023] In the above implementation process, the panel is installed at an angle of 50° to the plane of the base plate to facilitate the tester to observe the picture.

[0024] Other features and advantages disclosed in the present application will be described in the following description, or some features and advantages can be inferred or determined without doubt from the description, or can be learned by implementing the above-mentioned technology disclosed in the present application.

[0025] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 This is a schematic diagram of the front structure of the LCD screen FOG testing device provided in an embodiment of the present application;

[0028] Figure 2 A schematic side view of the structure of a test device for a liquid crystal screen FOG provided in an embodiment of the present application;

[0029] Figure 3 A front structural diagram of the base plate provided in an embodiment of the present application;

[0030] Figure 4 A front structural diagram of a panel provided in an embodiment of the present application;

[0031] Figure 5 This is a rear structural diagram of the panel provided in an embodiment of the present application.

[0032] Figure markings: 101-panel; 102-upper cover; 103-rear cover; 104-bottom plate; 105-side cover; 106-screw; 201-power interface; 202-control circuit board; 203-wire; 204-LCD screen cable extension cable; 205-LCD screen cable adapter board; 206-LCD screen cable slot; 207-power & communication line; 301-dust cover; 302-backlight module; 303-through hole; 304-previous page button; 305-pause button; 306-next page button; 307-switch button; 308-display circuit board. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.

[0034] In this application, terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are primarily intended to better describe this application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.

[0035] Furthermore, some of the above terms may be used to express other meanings besides indicating a position or location. For example, the term "on" may also be used to express a dependency or connection in certain circumstances. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0036] Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, removable connections, or integral structures; mechanical connections or point connections; direct connections, indirect connections through an intermediary, or internal communication between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances.

[0037] Furthermore, the terms "first," "second," and the like are primarily used to distinguish between different devices, elements, or components (which may or may not be of the same type and configuration), and are not intended to indicate or imply the relative importance or quantity of the devices, elements, or components indicated. Unless otherwise specified, "plurality" means two or more.

[0038] An embodiment of the present application provides a test device for liquid crystal FOG, which can be used in the test process of liquid crystal FOG; the panel, base plate, upper cover plate and rear cover plate in the test device for liquid crystal FOG are respectively connected and installed to form a device for testing liquid crystal FOG, an LCD backlight module is set on the panel, and a control circuit board is set on the base plate, and the control circuit board is electrically connected to the LCD backlight module and the liquid crystal FOG to be tested, so as to test the liquid crystal FOG. By installing the panel and the base plate at a preset tilt angle, it is convenient for testers to observe the picture during the LCD FOG test, and the technical effect of improving the efficiency of the test work can be achieved.

[0039] See Figure 1 and Figure 2 , Figure 1 This is a front view structural diagram of the LCD screen FOG testing device provided in an embodiment of the present application, Figure 2 A schematic side view of a test device for a liquid crystal FOG according to an embodiment of the present invention; the test device for a liquid crystal FOG comprises a panel 101, a base plate 104, and a cover plate assembly;

[0040] Exemplarily, the cover assembly includes an upper cover 102 and a rear cover 103. The panel 101, the upper cover 102, and the rear cover 103 are connected and installed in sequence. The rear cover 103 is installed on the bottom plate 104, and the panel 101 is installed on the bottom plate 104. The inclination angle between the panel 101 and the bottom plate 104 is a preset inclination angle.

[0041] Exemplarily, the panel 101 is provided with an LCD backlight module 302, and the base plate 104 is provided with a control circuit board 202. When the LCD FOG to be tested is tested, the control circuit board 202 is electrically connected to the LCD backlight module 302 and the LCD FOG to be tested, respectively, and the LCD FOG to be tested can be detachably installed on the LCD backlight module 302.

[0042] Illustratively, the panel 101, base plate 104, upper cover plate 102 and rear cover plate 103 in the LCD FOG testing device are connected and installed respectively to form a device for testing the LCD FOG. An LCD backlight module 302 is set on the panel, and a control circuit board 202 is set on the base plate 104. The control circuit board 202 is electrically connected to the LCD backlight module 302 and the LCD FOG to be tested, respectively, so as to test the LCD FOG. By installing the panel 101 and the base plate 104 at a preset tilt angle, it is convenient for testers to observe the picture during the LCD FOG test, thereby achieving the technical effect of improving the efficiency of the test work.

[0043] See Figure 3 , Figure 3 This is a front view of the base plate provided in an embodiment of the present application.

[0044] Illustratively, the base plate 104 is further provided with an LCD cable adapter plate 205 and an LCD cable groove 206. The LCD cable adapter plate 205 is electrically connected to the control circuit board 202 and the LCD FOG to be tested, respectively. The LCD cable groove 206 is matched with the LCD cable adapter plate 205, and the width of the LCD cable groove 206 matches the cable width of the LCD FOG to be tested, and the depth of the LCD cable groove 206 matches the seat height of the LCD cable adapter plate 205.

[0045] For example, the slot width of the LCD cable trough 206 is designed to be consistent with the cable width of the LCD FOG, and the depth of the LCD cable trough 206 is consistent with the height of the FPC socket on the LCD cable adapter board 205, so that the tester can easily insert the LCD FOG cable directly into the FPC socket on the LCD cable adapter board 205 along the slot of the LCD cable trough 206, saving cable alignment time and improving test work efficiency.

[0046] Exemplarily, the bottom plate 104 is further provided with an LCD cable extension line 204 , and the LCD cable extension line 204 is electrically connected to the LCD cable adapter board 205 .

[0047] Illustratively, the LCD cable adapter plate 205 is connected to the LCD cable extension cable 204 to extend the LCD cable interface of the control circuit board 202 and lead out the interface position of the control circuit board 202, thereby facilitating the connection of the LCD FOG to be tested to the control circuit board 202.

[0048] Exemplarily, the base plate 104 is further provided with a power interface 201 and a wire 203 , and the power interface 201 is electrically connected to the control circuit board 202 via the wire 203 .

[0049] Exemplarily, the power interface 201 is connected to a power source and provides power to the control circuit board 202 through the wire 203 .

[0050] In some embodiments, the base plate 104 is further provided with a power & communication line 207, and the control circuit board 202 outputs power and control instructions through the power & communication line 207. Optionally, the base plate 104 is electrically connected to the display circuit board 308 via the power & communication line 207.

[0051] See Figure 4 and Figure 5 , Figure 4 This is a front view of the structure of the panel provided in the embodiment of the present application. Figure 5 This is a rear structural diagram of the panel provided in an embodiment of the present application.

[0052] Exemplarily, the panel 101 is also provided with a previous page button 304, a pause button 305, a next page button 306, a switch button 307 and a display circuit board 308. The previous page button 304, the pause button 305, the next page button 306, the switch button 307 and the display circuit board 308 are electrically connected to the control circuit board 202 respectively.

[0053] For example, by setting the previous page button 304, the pause button 305, and the next page button 306, it is convenient for the tester to manually adjust the display screen of the LCD screen FOG to be tested, thereby facilitating the test; by setting the switch button 307, the control circuit board 202 will issue a power on and off instruction to switch the power switch state of the display circuit board 308.

[0054] Exemplarily, the panel 101 is further provided with a dust cover 301 , which is mounted on the surface of the backlight module 302 .

[0055] Illustratively, the backlight module 302 is covered by the dustproof cover 301 to prevent dust and stains from affecting the observation test.

[0056] Exemplarily, the cover plate assembly further includes side cover plates 105 , which are fixedly mounted to the panel 101 , the upper cover plate 102 , the rear cover plate 103 , and the bottom plate 104 , respectively.

[0057] Exemplarily, the side cover plate 105 is provided with a through hole.

[0058] Illustratively, the side cover plate 105 is provided with through holes to facilitate ventilation and heat dissipation of the built-in circuit board.

[0059] Exemplarily, the preset tilt angle is 40° to 60°.

[0060] Exemplarily, the preset tilt angle is 50°.

[0061] Exemplarily, the panel 101 is installed at an angle of 50° to the plane of the bottom plate 104 to facilitate the tester to observe the image.

[0062] In some embodiments, combined Figures 1 to 5 The LCD screen FOG test device shown in the figure also includes a plurality of screws 106, which are used to fix the panel 101 and the side cover 105, the upper cover 102 and the side cover 105, and the rear cover 103 and the side cover 105. Optionally, the screws 106 can be M3 screws, and the panel 101, the upper cover 102, the rear cover 103, the bottom plate 104, and the side cover 105 can be made of bakelite.

[0063] The power interface 201 is connected to the power supply and provides power to the control circuit board 202 through the wire 203;

[0064] The control circuit board 202 outputs power and control instructions through the power & communication line 207;

[0065] The LCD cable adapter plate 205 is connected to the LCD cable extension cable 204 to extend the LCD cable interface of the control circuit board 202, thereby leading out the interface position of the control circuit board 202 to facilitate access to the LCD FOG to be tested;

[0066] The slot width of the LCD cable trough 206 is designed to be consistent with the cable width of the LCD FOG. The depth of the LCD cable trough 206 is consistent with the height of the FPC seat on the LCD cable adapter board 205. The tester can directly insert the LCD FOG cable into the FPC seat on the LCD cable adapter board 205 along the slot of the LCD cable trough 206, saving time for cable alignment.

[0067] The dust cover 301 can be made of a transparent acrylic material. The dust cover 301 can cover the backlight module 302 to prevent dust and stains from affecting the observation test.

[0068] The backlight module 302 can provide backlight for the LCD screen FOG;

[0069] Optionally, a through hole 303 is provided on the panel 101, and the through hole 303 is used to pass the wires of the backlight module 302 to the back and connect to the display circuit board 308;

[0070] The previous page button 304 is connected to the control circuit board 202 of the bottom plate 104 through a wire. When the button is pressed, the control circuit board 202 will issue a previous page instruction, so that the display screen of the LCD screen FOG is paused at the previous page;

[0071] The pause button 305 is connected to the control circuit board 202 of the bottom plate through a wire. When the button is pressed, the control circuit board 202 will issue a pause instruction to pause the display image of the LCD screen FOG at the current image;

[0072] The next page button 306 is connected to the control circuit board 202 of the bottom plate through a wire. When the button is pressed, the control circuit board 202 will issue a next page instruction, so that the display screen of the LCD screen FOG pauses at the next page screen;

[0073] The switch button 307 is connected to the control circuit board 202 of the bottom plate through a wire. When the button is pressed, the control circuit board 202 will issue a power on / off instruction to switch the power on / off state of the LCD screen FOG;

[0074] The display circuit board 308 is programmed with a preset program to enable the LCD FOG to display full white, full black, red, green, blue, and gray, automatically switching every 0.3 seconds. The display circuit board 308 can also provide power to the backlight module 302 and obtain power and instructions through the power and communication line 207.

[0075] In summary, the LCD FOG testing device provided in the embodiment of the present application has at least the following beneficial effects:

[0076] 1. The panel 101 and the bottom plate 104 are installed at a preset tilt angle to facilitate the tester to observe the image;

[0077] 2. The setting of LCD cable groove 206 can save the time of cable alignment;

[0078] 3. The previous page, next page and pause buttons can control the screen, making it easier to observe the test screen and improve test quality.

[0079] In all embodiments of the present application, "big" and "small" are relative, "more" and "less" are relative, and "up" and "down" are relative. The expressions of such relative terms will not be elaborated in the embodiments of the present application.

[0080] It should be understood that the phrases “in this embodiment,” “in an embodiment of the present application,” or “as an optional implementation” mentioned throughout the specification mean that specific features, structures, or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, “in this embodiment,” “in an embodiment of the present application,” or “as an optional implementation” appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics may be combined in one or more embodiments in any suitable manner. Those skilled in the art should also be aware that the embodiments described in the specification are all optional embodiments, and the actions and modules involved are not necessarily required for the present application.

[0081] In the various embodiments of the present application, it should be understood that the size of the serial numbers of the above-mentioned processes does not necessarily mean the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0082] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included within the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A test device for liquid crystal screen FOG, characterized in that: Includes panel, base and cover assembly; The cover assembly includes an upper cover and a rear cover. The panel, the upper cover, and the rear cover are sequentially connected and installed. The rear cover is mounted on the bottom plate, and the panel is mounted on the bottom plate. The inclination angle between the panel and the bottom plate is a preset inclination angle. The panel is provided with a liquid crystal screen backlight module, and the bottom plate is provided with a control circuit board. When the liquid crystal screen FOG to be tested is tested, the control circuit board is electrically connected to the liquid crystal screen backlight module and the liquid crystal screen FOG to be tested respectively, and the liquid crystal screen FOG to be tested is detachably installed on the liquid crystal screen backlight module.

2. The LCD FOG testing device according to claim 1, characterized in that: The base plate is also provided with an LCD cable adapter plate and an LCD cable trough. The LCD cable adapter plate is electrically connected to the control circuit board and the LCD FOG to be tested, respectively. The LCD cable trough is matched with the LCD cable adapter plate, and the width of the LCD cable trough matches the cable width of the LCD FOG to be tested, and the depth of the LCD cable trough matches the seat height of the LCD cable adapter plate.

3. The LCD FOG testing device according to claim 2, characterized in that: The bottom plate is also provided with an LCD cable extension line, and the LCD cable extension line is electrically connected to the LCD cable adapter board.

4. The LCD FOG testing device according to claim 2 or 3, characterized in that: The base plate is further provided with a power interface and a wire, and the power interface is electrically connected to the control circuit board through the wire.

5. The LCD FOG testing device according to claim 1, characterized in that: The panel is also provided with a previous page button, a pause button, a next page button, a switch button and a display circuit board. The previous page button, the pause button, the next page button, the switch button and the display circuit board are electrically connected to the control circuit board respectively.

6. The LCD FOG testing device according to claim 5, characterized in that: The panel is further provided with a dustproof cover plate, and the dustproof cover plate is installed on the surface of the backlight module.

7. The LCD FOG testing device according to claim 1, characterized in that: The cover plate assembly further includes side cover plates, which are respectively fixedly mounted to the panel, the upper cover plate, the rear cover plate, and the bottom plate.

8. The LCD FOG testing device according to claim 7, characterized in that: The side cover plate is provided with a through hole.

9. The LCD FOG testing device according to claim 1, characterized in that: The preset tilt angle is 40° to 60°.

10. The LCD FOG testing device according to claim 9, characterized in that: The preset tilt angle is 50°.

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