Intelligent in-box detection device in liquid crystal display screen production

Abstract

The utility model discloses an intelligent in-box detection device in liquid crystal display screen production. The intelligent in-box detection device comprises a detection platform, the detection device is provided with a main control board (1) and a miniature camera (2), the miniature camera (2) is installed on a code scanning moving mechanism, and the code scanning moving mechanism moves on the detection device in the X-axis direction, the Y-axis direction and the Z-axis direction of a space coordinate system through a guide rail. And the micro camera (2) is connected with the main control board (1) through a signal circuit. According to the technical scheme, intelligent image recognition and conversion are carried out; the operation is simple, the requirements on the operating skills of operators are simplified and reduced, and the operation is quickly judged in the detection process; the work intensity is reduced and the detection work efficiency is improved; the body burden is reduced, and harm of strong light and the like to the body of an operator is avoided; abnormal operation of personnel is avoided, mistakes can be effectively prevented, and interference of human factors is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of display product manufacturing and its detection. More specifically, the utility model relates to an intelligent in-box detection device in liquid crystal display screen production. BACKGROUND

[0002] The liquid crystal display screen mainly comprises a CF surface glass, a TFT surface glass, PS pillars and liquid crystal material filled in the middle. The PS pillars are used for supporting and spacing the two surface glasses. As a new industry, the production and manufacturing of ultra-thin liquid crystal display screens still need a large amount of manual operation in the production process. Therefore, in-box detection and isolation of abnormal products are one of the necessary working steps in the production of liquid crystal display screens.

[0003] The production process of the prior art is as shown in Figure 1

[0004] The conventional detection method of the prior art is as follows: the product is placed on a larger detection platform, a polaroid is placed on the product, a magnifying glass is adjusted and moved by an operator, and the inside of the box is observed to determine whether the state of each liquid crystal display screen meets the requirements.

[0005] The conventional detection method of the prior art is as follows: the product is placed on a larger detection platform, a polaroid is placed on the product, a magnifying glass is adjusted and moved by an operator, and the inside of the box is observed to determine whether the state of each liquid crystal display screen meets the requirements.

[0006] Due to different sizes of liquid crystal display screens, small and medium-sized products are relatively easy to detect manually, but the detection of the middle part of large-sized products is difficult for operators, and the operators need to have higher operation skills. The detection personnel need to lie on the detection platform for a long time and expose their eyes to strong light sources to observe the bright spots in the box, which causes great damage to the human body. The above production process has great difficulty and needs to be improved.

[0007] The problems and defects of the prior art are as follows:

[0008] 1. In the production process, improper operation can easily cause damage to the PS pillars in the box, which can form bright spots and seriously affect the optical display effect of the product.

[0009] 2. In the existing process flow, the middle part of the large-sized product is detected by the operator, which has a high operation difficulty and requires higher operation skills of the operator. The operator needs to lie on the detection platform for a long time and expose his eyes to strong light sources, which causes great damage to the operator's vision.

[0010] The following search results are obtained by searching the existing public technical documents with the keywords "liquid crystal display screen; in-box; detection": ​

[0011] 1. Chinese patent document: "Detection device for liquid crystal display screen", patent (application) number: 201811013429.9; the technical solution recorded is:

[0012] "The detection device for liquid crystal display screen comprises a mounting box fixedly connected with a backlight module, a transparent L-shaped support is arranged on the side wall of the mounting box, a transparent fixing plate is fixedly connected to the upper end of the support, a collimating mechanism is arranged in the mounting box, the collimating mechanism comprises a light transmission receiver, a first linkage and a second linkage with telescopic property, the end portions of the first linkage and the second linkage are fixedly connected and perpendicular to each other, the lower end surface of the connection portion of the first linkage and the second linkage is hingedly connected with the light transmission receiver, the lower end of the light transmission receiver is in contact with the surface of the liquid crystal display screen, a return plate is vertically installed at the connection portion of the first linkage and the second linkage, the return plate is located on one side of the light transmission receiver, and the installation position of the return plate is opposite to the detection movement direction of the light transmission receiver";

[0013] The technical effects recorded are:

[0014] "Ensure that the end of the receiver is in complete contact with the surface of the liquid crystal display screen, and the detected data is more accurate".

[0015] 2. Chinese patent document: "Liquid crystal display screen detection machine", patent (application) number: 202323185515.7; the technical solution recorded is:

[0016] "The liquid crystal display screen detection machine comprises a body mechanism, a detection mechanism and a limiting mechanism, the detection mechanism is located above the right side of the body mechanism, the limiting mechanism is located inside the right side of the body mechanism, the detection mechanism comprises a detection machine body, an assembly block, an operating block, an assembly rod, a clasp spring, a clamping block and a protection block, the assembly block is fixedly installed at the upper end of the detection machine body, the operating block is movably installed above the assembly block, and the assembly rod is fixedly assembled at the side of the lower end of the operating block and penetrates into the inside of the side of the assembly block";

[0017] The technical effects recorded are:

[0018] "By arranging the assembly block, the detection machine body can be adjusted at the upper end of the detection box. This adjustment structure allows the detection machine body to be adjusted after the inside of the detection box is adjusted according to the specifications of the liquid crystal display screen. Thus, the detection machine body can correspond to the liquid crystal display screen placed at the lower end, and the detection accuracy is increased".

[0019] However, the technical solutions recorded in the above technical documents, as well as the related technical solutions currently disclosed and applied, have not been able to solve the problems and defects in the existing technology of liquid crystal display screen detection, such as "forming bright spots, seriously affecting the optical display effect of the product", "high operation difficulty, and great damage to the vision of the operator". Practical new content

[0020] The utility model provides a kind of intelligent in-box detection device in liquid crystal display screen production, its purpose is to improve detection efficiency and quality, reduce the work intensity of operator.

[0021] In order to achieve the above purpose, the technical scheme adopted by the utility model is:

[0022] The intelligent in-box detection device in liquid crystal display screen production of the utility model, including detection platform, the product to be detected is placed on the detection platform;The detection device is provided with main control board and miniature camera, the miniature camera is installed on the code scanning moving mechanism, the code scanning moving mechanism moves on the detection device through guide rail in the three-axis direction of space coordinate system XYZ;The miniature camera is connected with main control board through signal circuit.

[0023] In the X-axis direction of space coordinate system, the code scanning moving mechanism is driven by horizontal X-axis motor;In the Y-axis direction of space coordinate system, the code scanning moving mechanism is driven by horizontal Y-axis motor;In the Z-axis direction of space coordinate system, the code scanning moving mechanism is driven by longitudinal Z-axis motor;The horizontal X-axis motor, horizontal Y-axis motor and longitudinal Z-axis motor are connected with main control board through drive control circuit respectively.

[0024] Collision sensors are respectively arranged at the edge limit position of the detection device, and the collision sensors are respectively connected with main control board through signal circuit.

[0025] The detection device is provided with display operation screen;The display operation screen is connected with main control board through signal circuit.

[0026] A magnifying glass is arranged in the position alignment shooting direction of the miniature camera;The miniature camera and the magnifying glass constitute an assembled whole structure.

[0027] The detection device is provided with three-axis rocker sensor;The three-axis rocker sensor is connected with main control board through signal circuit.

[0028] The main control board adopts Latte Panda Sigma to carry 13 generation Intel cool i5-1340P processor, has 12 core 16 threads, and the turbo acceleration reaches 4.6GHz.

[0029] The interface of each device of the detection device includes one or more of USB, HDMI, RS232, GPIO, Ethernet, eDP.

[0030] This utility model adopts the above-mentioned technical solution, utilizing image processing technology through intelligent image recognition and conversion; it is simple to operate, simplifying and reducing the skill requirements for operators, allowing them to easily identify whether the LCD screen status meets the requirements, facilitating quick judgment during the inspection process; for larger products, operators can easily monitor the middle part inside the box; it changes the operating method by using intelligent sensors and transmission mechanisms, allowing operators to select the corresponding detection position by controlling a joystick, reducing the workload and intensity of the operation, and improving inspection efficiency; it reduces physical burden and avoids harm to operators from strong light; it prevents abnormal operation by personnel, effectively preventing errors and avoiding interference from human factors. Attached Figure Description

[0031] The following is a brief explanation of the contents shown in the attached figure and the markings therein:

[0032] Figure 1 This is a schematic diagram of the existing technology;

[0033] Figure 2 This is a schematic diagram of the structure of this utility model;

[0034] Figure 3 This is a front view of the detection device of this utility model;

[0035] Figure 4 for Figure 3 A side view of the structure shown;

[0036] Figure 5 for Figure 3 The diagram shows a top view of the structure, with the product in a horizontal inspection state.

[0037] The diagram is marked as follows:

[0038] 1. Main control board, 2. Miniature camera, 3. Collision sensor, 4. Collision sensor, 5. Three-axis joystick sensor, 6. Horizontal X-axis motor, 7. Horizontal Y-axis motor, 8. Vertical Z-axis motor, 9. Display and operation screen, 10. USB. Detailed Implementation

[0039] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings, so as to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of the present invention.

[0040] like Figure 2The utility model discloses a structure shown, for a kind of intelligent in-box detection device in liquid crystal display production, including detection platform, the product to be detected is placed on the detection platform.

[0041] With the continuous improvement of industrial chain, gradually use more high-end intelligent equipment instead of manual operation. Accelerate the production of intelligent, must promote the efficient and flexible production mode; Vigorously implement the implementation of intelligent manufacturing strategy, promote the improvement of the modernization production level of enterprise, realize the optimized process flow; Using intelligent robot instead of manual operation, can effectively reduce labor cost, improve labor efficiency, economic benefit and reduce process exception.

[0042] Therefore, in order to solve the problems existing in the prior art and overcome its defects, realize the purpose of improving detection efficiency and quality, reducing the work intensity of operating personnel, the utility model adopts the following technical scheme:

[0043] As Figures 2 to 5 The utility model discloses a kind of intelligent in-box detection device in liquid crystal display production, and main control board 1 and micro camera 2 are arranged, the micro camera 2 is installed on scanning code mobile mechanism, the scanning code mobile mechanism moves on detection device through guide rail in the direction of space coordinate system XYZ three-axis direction;The micro camera 2 is connected with main control board 1 by signal circuit.

[0044] Generally, X axis, Y axis are two coordinate axes of horizontal plane direction;Z axis is the coordinate axis of plumb direction, and constitutes space three-coordinate system.

[0045] The main control board 1 stores intelligent image recognition and conversion program, and the drive program for controlling micro camera 2 to carry out image acquisition, and the image information of product is acquired by micro camera 2, and is transmitted to main control board 1.

[0046] The above technical scheme of the utility model, using picture processing technology, by intelligent image recognition and conversion;Operation is simple, simplifies and reduces the operating skill requirement to operating personnel, and operating personnel can easily distinguish whether the state of liquid crystal display meets the requirement, facilitate operating personnel to quickly judge operation in detection process;For larger size product, operating personnel can conveniently monitor the middle part in box;Physical burden is reduced, avoid the harm of strong light to operating personnel's body;Avoid personnel abnormal operation, can effectively prevent mistake, avoid human factor interference.

[0047] Its operation mode: only need to put product into detection equipment in sequence, equipment will be automatically positioned, scanning uploads main control board 1, and display screen in-box information;Can reduce manual labor, improve detection efficiency, also can effectively avoid the mistake of manual operation.

[0048] In the X-axis direction of the space coordinate system, the code scanning moving mechanism is driven by a horizontal X-axis motor 6; in the Y-axis direction of the space coordinate system, the code scanning moving mechanism is driven by a horizontal Y-axis motor 7; in the Z-axis direction of the space coordinate system, the code scanning moving mechanism is driven by a vertical Z-axis motor 6; the horizontal X-axis motor 6, the horizontal Y-axis motor 7 and the vertical Z-axis motor 8 are connected with the main control board 1 through a driving control circuit respectively.

[0049] The horizontal X-axis motor 6 and the horizontal Y-axis motor 7 are mainly used for driving the code scanning device to move horizontally along the X-axis and the Y-axis; the vertical Z-axis motor 8 is mainly used for driving the code scanning structure to move vertically along the Z-axis.

[0050] The above technical scheme of the utility model changes the operation mode, adopts intelligent sensor and transmission mechanism, operation personnel selects corresponding detection position through controlling joystick control, reduces operation workload in operation process, reduces operation intensity, improves detection work efficiency.

[0051] Collision sensors 3 and 4 are arranged at the edge limit positions of the detection device respectively, and the collision sensors 3 and 4 are connected with the main control board 1 through a signal circuit respectively.

[0052] The collision sensor 4 is mainly used for resetting each motor and detecting the limit of the direction movement of the miniature camera 2, so as to prevent the movement of the code scanning mechanism from exceeding the boundary of the detection device.

[0053] As shown in the figure: Figure 2

[0054] The detection device is provided with a display operation screen 9, and the display operation screen 9 is connected with the main control board 1 through a signal circuit.

[0055] Through the intelligent box instrument, the product only needs to be placed on the instrument, and the equipment can be automatically positioned; through the control of the remote control handle, the detection image can be displayed on the display operation screen 9 (i.e. computer display) in real time, and through gray scale conversion, the operation personnel can directly observe and confirm the number of bright spots on the display operation screen 9, so as to achieve the dual goals of increasing work efficiency and reducing personnel operation intensity; the operator inputs information through the display operation screen 9 and operates the detection process.

[0056] A magnifying glass is arranged in the position alignment shooting direction of the miniature camera 2, and the miniature camera 2 and the magnifying glass constitute an assembled integral structure. ​

[0057] The code scanning device is a miniature camera 2 and a magnifying lens assembly device adopting a USB10 interface; mainly for reading data information in the box and uploading to the main control board 1.

[0058] The detection device is provided with a three-axis rocker sensor 5; the three-axis rocker sensor 5 is connected with the main control board 1 through a signal circuit.

[0059] The three-axis rocker sensor 5 is mainly used for controlling the horizontal X, horizontal Y and longitudinal Z axis movement of the motor.

[0060] The main control board 1 and the display operation screen 9 (the display operation screen 9 is shown in Figure 2

[0061] The main control board 1 adopts a Latte Panda Sigma carrying a 13th generation Intel Core i5-1340P processor, has 12 cores and 16 threads, and the turbo acceleration reaches 4.6GHz, providing extreme performance and multitasking processing capability;

[0062] Rich interfaces are provided: the interfaces of various devices of the detection device include one or more of USB10, HDMI, RS232, GPIO, Ethernet, eDP, are suitable for multiple application scenarios, are fast in response, control the work of various devices and collect and display data.

[0063] The technical effect of the utility model is specifically a gray scale bright spot conversion function:

[0064] 1. The image obtained by detection:

[0065] Under 50 times magnification, it can be seen that the liquid crystal display screen contains red, green and blue three primary colors, and in the pixel grid with individual PS pillar damage, a prominent bright spot can be found.

[0066] 2. The image obtained by gray scale processing:

[0067] The original image is converted into a gray scale image and is subjected to smoothing filtering to reduce the contrast of high frequency color difference.

[0068] 3. Bright spot display image:

[0069] Through black and white threshold interception, the bright area of the image is now white, and the rest of the image is set to black; for the white bright spot, the number of calculations can be captured and calculated through the image to determine the degree of abnormality.

[0070] Economic and technical benefit comparison and analysis of the utility model:​

[0071] 1. Prior art:

[0072] Main components: setting support, backlight, magnifying glass

[0073] Equipment cost: 10000 yuan

[0074] Work efficiency: 90 pieces / day

[0075] Labor cost: 6000 yuan / month

[0076] Operation difficulty: difficult

[0077] 2. Improved technology of the present application:

[0078] Setting support, backlight, magnifying glass + micro USB camera, LattePanda main control and display screen, three motors, three guide rails, three-axis rocker sensor, collision sensor

[0079] Equipment cost: 25000 yuan

[0080] Work efficiency: 120 pieces / day

[0081] Labor cost: 4500 yuan / month

[0082] Operation difficulty: simple and easy

[0083] Note: The above comparative analysis is based on the total amount of monthly detection work of 2700 pieces, and the labor cost is calculated at 200 yuan / day. Obviously, through the implementation of the technical scheme of the present application, the process difficulty is reduced, the work efficiency is greatly improved, and the production cost is substantially reduced through the improvement of work efficiency, which is worthy of popularization and application in the field.

[0084] The present application has been described above in conjunction with the drawings, and obviously the specific implementation of the present application is not limited by the above method. Any non-essential improvement or direct application of the concept and technical scheme of the present application to other occasions without improvement is within the scope of protection of the present application.

Claims

1. An intelligent in-box detection device in liquid crystal display production, comprising a detection platform, the product to be detected is placed on the detection platform; characterized in that: The detection device is provided with a main control board (1) and a miniature camera (2), the miniature camera (2) is installed on a code scanning moving mechanism, the code scanning moving mechanism moves on the detection device through a guide rail in the three-axis direction of the spatial coordinate system XYZ, and the miniature camera (2) is connected with the main control board (1) through a signal circuit. ​ 2. The apparatus for in-cell inspection during production of liquid crystal display panels as claimed in claim 1, wherein: In the X-axis direction of the spatial coordinate system, the code scanning moving mechanism is driven by a horizontal X-axis motor (6); in the Y-axis direction of the spatial coordinate system, the code scanning moving mechanism is driven by a horizontal Y-axis motor (7); in the Z-axis direction of the spatial coordinate system, the code scanning moving mechanism is driven by a vertical Z-axis motor (8); the horizontal X-axis motor (6), the horizontal Y-axis motor (7) and the vertical Z-axis motor (8) are connected with the main control board (1) through a driving control circuit respectively.

3. The apparatus for in-cell inspection during production of liquid crystal display panels as claimed in claim 1, wherein: Collision sensors (3, 4) are arranged at the edge limit positions of the detection device respectively, and the collision sensors (3, 4) are connected with the main control board (1) through a signal circuit respectively.

4. The apparatus for in-cell inspection during production of liquid crystal display panels as claimed in claim 1, wherein: The detection device is provided with a display operation screen (9), and the display operation screen (9) is connected with the main control board (1) through a signal circuit.

5. The apparatus for in-cell inspection during production of liquid crystal display panels as claimed in claim 1, wherein: A magnifying glass is arranged in the position alignment shooting direction of the miniature camera (2), and the miniature camera (2) and the magnifying glass constitute an assembled whole structure.

6. The apparatus for in-cell inspection during production of liquid crystal display panels as claimed in claim 1, wherein: The detection device is provided with a three-axis rocker sensor (5), and the three-axis rocker sensor (5) is connected with the main control board (1) through a signal circuit.

7. The apparatus for in-cell inspection during production of liquid crystal display panels as claimed in claim 1, wherein: The main control board (1) adopts Latte Panda Sigma and is loaded with a 13th generation Intel Core i5-1340P processor, has 12 cores and 16 threads, and the turbo acceleration reaches 4.6 GHz.

8. The apparatus for in-cell inspection during production of liquid crystal display panels as claimed in claim 1, wherein: The interfaces of the devices of the detection device include one or more of USB (10), HDMI, RS232, GPIO, Ethernet and eDP.

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