A linkage dark box test device for LCD screen

Abstract

The utility model provides a linkage dark box test device for LCD screen, including a test device main cabinet, a mobile test dark box and a loading and discharging assembly, wherein the mobile test dark box is movably connected to the upper surface of the test device main cabinet, the loading and discharging assembly is fixedly arranged on the upper surface of the test device main cabinet and cooperates with the mobile test dark box, an LCD screen support assembly is arranged in the mobile test dark box, a control main board and a drive assembly are arranged in the test device main cabinet, the control main board is connected to the drive assembly by control, and the drive assembly is connected to the loading and discharging assembly and the LCD screen support assembly by driving. The beneficial effects of the utility model are: it is possible to achieve a unified test angle of 45° on the test platform for testing, and the consistency of the test effect and the test efficiency are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of testing, in particular to a linkage dark box testing device for an LCD screen. Background Art

[0002] LCD screen, or liquid crystal display, is the abbreviation of Liquid Crystal Display. The structure of LCD screen is to place a liquid crystal box between two parallel glass substrates, TFT (thin film transistor) is set on the lower substrate glass, and color filter is set on the upper substrate glass. The rotation direction of liquid crystal molecules is controlled by changing the signal and voltage on TFT, so as to control whether the polarized light of each pixel is emitted or not to achieve the display purpose. Now LCD has replaced CRT and become the mainstream. The price has also dropped a lot and it has been fully popularized.

[0003] During the production process of LCD screens, the display function of the LCD screen needs to be tested manually, and one of the steps is the dark state test. The usual test method is: the operator manually places the LCD screen on the support plate in the dark box, manually tilts the LCD screen up and down to the corresponding angle, and then performs the dark state test. Since the LCD screen needs to be manually picked up and placed for operation, there will be the following problems:

[0004] 1. Manual testing, inconsistent test angles, resulting in large differences in test results;

[0005] 2. Manual picking test, the number of tests per time is 1-2, the test efficiency is low, and it cannot meet the test efficiency requirements;

[0006] 3. There is no full material sensing before and after the test, and there is LCD screen accumulation during the test, which can easily cause errors and confusion. Utility Model Content

[0007] In order to solve the problems in the prior art, the utility model provides a linkage dark box testing device for LCD screens. By arranging a test device main cabinet, a mobile test dark box and a loading and unloading assembly that cooperate with each other in the linkage dark box testing device, it is possible to implement testing at a unified test angle of 45° on the test platform, thereby greatly improving the consistency of test results, greatly improving the test efficiency, and adding full material sensing to the front and rear buffers to effectively prevent material mixing and leakage, thereby solving the problems in the prior art of large differences in manual test results, low manual test efficiency and the existence of mixing and leaking of materials in the dark state test of LCD screens.

[0008] The utility model provides a linkage dark box testing device for LCD screens, comprising a testing device main body cabinet, a mobile testing dark box and a loading and discharging assembly, wherein the mobile testing dark box is movably connected to the upper surface of the testing device main body cabinet, the loading and discharging assembly is fixedly arranged on the upper surface of the testing device main body cabinet and cooperates with the mobile testing dark box, an LCD screen supporting assembly is arranged in the mobile testing dark box, a control main board and a driving assembly are arranged in the testing device main body cabinet, the control main board is control-connected to the driving assembly, the driving assembly is drivingly connected to the loading and discharging assembly and the LCD screen supporting assembly, and the control main board can control the driving assembly to drive the LCD screen supporting assembly to tilt the LCD screen to be tested transmitted by the loading and discharging assembly to 45° to complete the dark state test.

[0009] The utility model is further improved, the driving component includes a driving cylinder and a driving motor, the control mainboard is controlled and connected with the driving cylinder and the driving motor, the driving cylinder is drivingly connected with the LCD screen support component, and the driving motor is drivingly connected with the loading and discharging component.

[0010] The utility model is further improved, the LCD screen support assembly includes an LCD screen support platform and an inclined support column, one end of the inclined support column is fixedly connected to one side of the LCD screen support platform, the other end of the inclined support column is slidably connected to the bottom of the mobile test darkbox, the driving cylinder is drivingly connected to the bottom surface of one side of the LCD screen support platform, the other side of the LCD screen support platform is movably connected to the bottom of the mobile test darkbox and is close to the loading and unloading assembly, and the LCD screen support platform can be tilted 45° under the drive of the driving cylinder.

[0011] The utility model is further improved, the loading and unloading assembly includes a material conveying belt, the driving motor is drivingly connected to the material conveying belt, and the material conveying belt is sequentially provided with a loading area, a test buffer platform and a discharge buffer platform along its movement direction.

[0012] The utility model is further improved in that the cache platform to be tested is provided with a full-fill sensor for the area to be tested, and the full-fill sensor for the area to be tested is feedback-connected to the control mainboard.

[0013] The utility model is further improved in that the material discharging buffer platform is provided with a full material sensor in the measured area, and the full material sensor in the measured area is feedback-connected with the control mainboard.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model provides a linkage dark box test device for LCD screens, by arranging a test device main cabinet, a mobile test dark box and a loading and discharging component that cooperate with each other in the linkage dark box test device, the control mainboard can control the driving component to drive the LCD screen support component to tilt the LCD screen to be tested transmitted by the loading and discharging component to 45° to complete the dark state test, and can achieve a unified test angle of 45° on the test platform for testing, and the consistency of the test effect is greatly improved. The number of single tests is increased from 2 to 5, and the test efficiency is greatly improved. Moreover, the front and rear caches are equipped with full material sensing to effectively prevent material mixing and leakage, and solve the problems of large differences in manual test effects, low manual test efficiency, and the existence of mixing and leakage in the prior art of LCD screen dark state testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the solutions in the present application or the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a structural diagram of a linkage dark box testing device for LCD screens according to the utility model;

[0017] Figure 2 It is a structural diagram of a linkage dark box testing device for LCD screens according to the utility model.

[0018] In the figure, 1-test device main cabinet, 2-mobile test dark box, 21-LCD screen support assembly, 3-loading and unloading assembly, 31-material conveyor belt, 32-loading area, 33-buffer platform to be tested, 34-discharging buffer platform. DETAILED DESCRIPTION

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field of this application; the terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit the application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0020] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0021] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

[0022] like Figure 1-2 As shown, the utility model provides a linkage dark box test device for LCD screen, including a test device main cabinet 1, a mobile test dark box 2 and a loading and unloading assembly 3, the mobile test dark box 2 is movably connected to the upper surface of the test device main cabinet 1, the loading and unloading assembly 3 is fixedly arranged on the upper surface of the test device main cabinet 1 and cooperates with the mobile test dark box 2, the mobile test dark box 2 is provided with an LCD screen support assembly 21, the test device main cabinet 1 is provided with a control mainboard and a drive assembly, the control mainboard is connected to the drive assembly by control, and the drive assembly is connected to the loading and unloading assembly 3 and the LCD screen support assembly 21 by driving. In this embodiment, the control mainboard can control the drive assembly to drive the LCD screen support assembly to tilt the LCD screen to be tested transmitted by the loading and unloading assembly to 45° to complete the dark state test, and can achieve a unified test angle of 45° on the test platform for testing, the consistency of the test effect is greatly improved, the number of single tests is increased from 2 to 5, the test efficiency is greatly improved, and the front and rear buffers are equipped with full material sensing to effectively prevent material mixing and leakage.

[0023] like Figure 1-2As shown, the driving component includes a driving cylinder and a driving motor, the control mainboard is connected to the driving cylinder and the driving motor, the driving cylinder is connected to the LCD screen support component 21, and the driving motor is connected to the loading and unloading component 3; the CD screen support component 21 includes an LCD screen support platform and an inclined support column, one end of the inclined support column is fixedly connected to one side of the LCD screen support platform, and the other end of the inclined support column is slidably connected to the bottom of the mobile test darkroom 2, the driving cylinder is connected to the bottom surface of one side of the LCD screen support platform, and the other side of the LCD screen support platform is connected to the bottom of the mobile test darkroom 2 Actively connected and close to the loading and discharging component 3, the LCD screen supporting platform can be tilted 45° under the drive of the driving cylinder; the loading and discharging component 3 includes a material conveying belt 31, the driving motor is connected to the material conveying belt 31, and the material conveying belt 31 is provided with a loading area 32, a test buffer platform 33 and a discharging buffer platform 34 in sequence along its movement direction; the test buffer platform 33 is provided with a full material sensor for the test area, and the full material sensor for the test area is connected to the control main board for feedback; the discharging buffer platform is provided with a full material sensor for the measured area, and the full material sensor for the measured area is connected to the control main board for feedback. In this embodiment, when the linked dark box testing device for LCD screens of the utility model starts to work, the material conveyor belt starts to drive under the drive of the driving motor, the operator feeds the LCD screen to the loading area, and is brought to the cache platform to be tested under the movement of the material conveyor belt. The operator moves the LCD screen to the LCD screen support platform, drives the cylinder to tilt the LCD screen support platform to 45°, and the operator clicks on the LCD screen. The operator identifies and distinguishes the test OK and NG results through the test observation window; after the dark test is NG, the personnel takes out the NG product and puts it into the NG product placement area; after the dark test is OK, the product is placed on the discharging cache platform and manually pushed to the tail end, and when the full material sensor in the tested area alarms with a yellow light, the tested material is transported away; the full material sensor in the tested area alarms with a red light, and feedback to the control main board will suspend the operation of the material conveyor belt.

[0024] From the above, it can be seen that: the utility model provides a linkage dark box test device for LCD screens. By arranging a test device main cabinet, a mobile test dark box and a loading and discharging component that cooperate with each other in the linkage dark box test device, the control mainboard can control the driving component to drive the LCD screen support component to tilt the LCD screen to be tested transmitted by the loading and discharging component to 45° to complete the dark state test, and can achieve a unified test angle of 45° on the test platform for testing, and the consistency of the test effect is greatly improved. The number of single tests is increased from 2 to 5, and the test efficiency is greatly improved. In addition, the front and rear caches are equipped with full material sensing to effectively prevent material mixing and leakage, which solves the problems of large differences in manual test effects, low manual test efficiency, and mixed errors and leakages in the prior art of LCD screen dark state testing.

[0025] The specific implementation methods described above are preferred implementation methods of the present utility model, and are not intended to limit the specific implementation scope of the present utility model. The scope of the present utility model includes but is not limited to the specific implementation methods. All equivalent changes made in accordance with the present utility model are within the protection scope of the present utility model.

Claims

1. A linkage dark box test device for LCD screen, characterized in that: The invention comprises a main cabinet of the testing device, a mobile testing dark box and a loading and discharging assembly, wherein the mobile testing dark box is movably connected to the upper surface of the main cabinet of the testing device, the loading and discharging assembly is fixedly arranged on the upper surface of the main cabinet of the testing device and cooperates with the mobile testing dark box, an LCD screen supporting assembly is arranged in the mobile testing dark box, a control mainboard and a driving assembly are arranged in the main cabinet of the testing device, the control mainboard is control-connected to the driving assembly, the driving assembly is drivingly connected to the loading and discharging assembly and the LCD screen supporting assembly, and the control mainboard can control the driving assembly to drive the LCD screen supporting assembly to tilt the LCD screen to be tested transmitted by the loading and discharging assembly to 45° to complete the dark state test.

2. The linkage dark box testing device for LCD screen according to claim 1, characterized in that: The driving assembly includes a driving cylinder and a driving motor. The control mainboard is control-connected to the driving cylinder and the driving motor. The driving cylinder is drivingly connected to the LCD screen supporting assembly. The driving motor is drivingly connected to the loading and unloading assembly.

3. The linkage dark box testing device for LCD screen according to claim 2, characterized in that: The LCD screen support assembly includes an LCD screen support platform and an inclined support column, one end of the inclined support column is fixedly connected to one side of the LCD screen support platform, the other end of the inclined support column is slidably connected to the bottom of the mobile test darkbox, the driving cylinder is drivingly connected to the bottom surface of one side of the LCD screen support platform, the other side of the LCD screen support platform is movably connected to the bottom of the mobile test darkbox and is close to the loading and unloading assembly, and the LCD screen support platform can be tilted 45° under the drive of the driving cylinder.

4. The linkage dark box testing device for LCD screen according to claim 3, characterized in that: The loading and unloading assembly includes a material conveying belt, the driving motor is drivingly connected to the material conveying belt, and the material conveying belt is sequentially provided with a loading area, a buffer platform to be tested and a discharge buffer platform along its moving direction.

5. The linkage dark box testing device for LCD screen according to claim 4, characterized in that: The cache platform to be tested is provided with a full-fill sensor for the area to be tested, and the full-fill sensor for the area to be tested is feedback-connected to the control mainboard.

6. The linkage dark box testing device for LCD screen according to claim 5, characterized in that: The material discharging buffer platform is provided with a measured area full material sensor, and the measured area full material sensor is feedback-connected to the control mainboard.

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