An LCD offset precision detection device

Abstract

The utility model relates to a kind of LCD partiality and paste precision detection equipment, for detecting the partiality and paste precision of product of completion partiality and paste, including rack;Feeding unit, it is set in the rack;Transfer transmission unit, it is set in the rack, the transfer transmission unit suction the product, and move the product to designated position;First detection unit, it includes first bearing platform and camera module, the first bearing platform movably set in the rack, the product is placed in the first bearing platform by the transfer transmission unit, camera module includes the first camera assembly and second camera assembly respectively arranged along height direction;First bearing platform moves to between the first camera assembly and the second camera assembly.The utility model can improve detection efficiency, and partiality and paste precision and transmittance can be detected, can effectively improve detection precision, the utility model's structure is compact, reasonable in design, to be able to promote the rationality of space utilization.

Description

Technical Field

[0001] This utility model relates to the field of LCD testing technology, and in particular to an LCD offset accuracy testing device. Background Technology

[0002] The structure of an LCD (Liquid Crystal Display) mainly consists of the following core components, achieving image display through the combination of multiple layers of materials. Specifically, an LCD comprises a backlight module, a glass substrate, a liquid crystal layer, transparent electrodes, sealing materials, and driving circuitry. When the LCD is operating, the backlight module emits white light, which is converted into polarized light by the lower polarizer. The liquid crystal molecules rotate under an electric field to adjust the transmittance of the polarized light. The light then passes through a color filter to form RGB sub-pixel colors, and then passes through the upper polarizer to synthesize the final image. In the LCD manufacturing process, polarization accuracy detection is a crucial step in ensuring precise bonding between the polarizer and the glass substrate. Deviations in polarization accuracy can lead to display abnormalities (such as uneven brightness, color shift, and light leakage), thus requiring strict detection and control of polarization accuracy. In existing technologies, the polarization accuracy between the glass substrate and the polarizer is typically determined manually.

[0003] However, the shortcomings of the existing technology are that the current inspection process requires operators to move back and forth between multiple workstations. On the one hand, the inspection efficiency is low. On the other hand, due to the differences in the work experience of the operators, there are differences in the judgment of the offset accuracy. This leads to inaccurate accuracy judgment and thus affects the product pass rate. Utility Model Content

[0004] Therefore, the technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an LCD offset accuracy detection device that can improve detection efficiency, improve detection accuracy, and has a compact structure, thereby improving the rationality of space utilization.

[0005] To solve the above-mentioned technical problems, this utility model provides an LCD offset accuracy testing device for detecting the offset accuracy of a finished offset product, including:

[0006] frame;

[0007] A feeding unit is disposed on the frame;

[0008] A transfer unit is disposed on the rack, the transfer unit picks up the product and moves the product to a designated position;

[0009] The first detection unit includes a first support platform and a camera module. The first support platform is movably mounted on the frame. The transfer unit places the product on the first support platform. The camera module includes a first camera component and a second camera component respectively arranged along the height direction. The first support platform moves between the first camera component and the second camera component and performs the first image acquisition on the area to be tested of the product through the camera module to detect the offset accuracy of the product.

[0010] The second detection unit includes a second support platform, a darkroom environment, a light source assembly, and a third camera assembly, wherein the third camera assembly is housed within the darkroom environment. The second support platform is mounted on the frame and can be moved to the darkroom environment by a drive. The light source assembly is movably connected to the second support platform, and the product can be mounted on the light source assembly. After the product flows out of the first detection unit, it is transported to the light source assembly through the transfer unit. The light source assembly moves the product into the darkroom environment, where the third camera assembly performs a second image acquisition on the product to detect its light transmittance.

[0011] A feeding unit is disposed on the frame, and the feeding unit transfers and feeds the products that have completed inspection.

[0012] In one embodiment of this utility model, the feeding unit includes a first frame, a rolling transmission assembly, a movable clamping assembly, and a limiting baffle. The first frame is mounted on the machine frame. The rolling transmission assembly includes a roller assembly and a first drive mechanism. The roller assembly is horizontally disposed on the first frame, and the first drive mechanism is connected to the roller assembly to drive the roller assembly to move. The product is placed on the roller assembly and moves along a first direction under the drive of the roller assembly. The movable clamping assembly includes a first clamping member and a second clamping member disposed opposite to each other. The first clamping member and the second clamping member are disposed in the gap of the roller assembly, and the first clamping member and the second clamping member can move along a second direction to limit the product in the second direction, which is perpendicular to the first direction. The limiting baffle is disposed at the end of the first frame to restrict the movement of the product along the first direction.

[0013] In one embodiment of this utility model, the transfer unit includes a first transfer component, a second transfer component, and a third transfer component. The first transfer component is disposed between the loading unit and the first detection unit to transfer the product from the loading unit to the first detection unit. The second transfer component is disposed between the first detection unit and the second detection unit to transfer the product from the first detection unit to the second detection unit. The third transfer component is disposed between the second detection unit and the unloading unit to transfer the product that has completed detection to the unloading unit.

[0014] In one embodiment of the present invention, the first transfer component includes a first support frame, a first connecting plate, a first lifting drive, a first mounting plate, and a first suction nozzle assembly. The first support frame is mounted on the frame, and a first electric slide is provided on the first support frame. The first connecting plate is disposed at the movable end of the first electric slide, the first lifting drive is disposed on the first connecting plate, the first mounting plate is disposed at the movable end of the first lifting drive, and the first suction nozzle assembly is disposed on the first mounting plate.

[0015] In one embodiment of the present invention, the first detection unit further includes a first electric cylinder, the first electric cylinder is mounted on the frame, and the first support platform is disposed at the movable end of the first electric cylinder so as to move along a first direction under the drive of the first electric cylinder.

[0016] In one embodiment of the present invention, the second detection unit further includes a second electric cylinder, which is mounted on the frame, and the second support platform is disposed at the movable end of the second electric cylinder so as to move along a second direction under the drive of the second electric cylinder.

[0017] In one embodiment of the present invention, the first camera assembly and the second camera assembly are arranged at intervals along the horizontal direction to detect the offset accuracy of the two ends of the product along the diagonal direction; the first camera assembly includes two first cameras, and the second camera assembly includes two second cameras.

[0018] In one embodiment of this utility model, the light source assembly includes a light box, a heat sink, a fixture plate, and a limiting block. The heat sink is disposed at the bottom of the light box, and the fixture plate is mounted on the top of the light box. The fixture plate has a light-transmitting hole that matches the shape of the product. A limiting block is disposed at the edge of the light-transmitting hole, and the product is limited to the light-transmitting hole by the limiting block.

[0019] In one embodiment of this utility model, the unloading unit is adjacent to the end of the second bearing platform. The unloading unit includes a first unloading component, which includes a first transmission roller structure. The first unloading component is used to unload the product whose test results meet the standard.

[0020] In one embodiment of the present invention, the feeding unit further includes a second feeding component, which includes a second conveying roller structure. The second feeding component is used to convey and feed products whose test results do not meet the standards.

[0021] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0022] The LCD offset accuracy testing device of this utility model includes a frame, a feeding unit, a transfer unit, a first testing unit, a second testing unit, and a unloading unit. The product to be tested is fed into the feeding unit via the transfer unit, and then sequentially passes through the first testing unit, the second testing unit, and the unloading unit. Offset accuracy is tested in the first testing unit, light transmittance is tested in the second testing unit, and the product is unloaded via the unloading unit. This facilitates batch collection of products for the next process. Using this LCD offset accuracy testing device improves testing efficiency and can test both offset accuracy and light transmittance, effectively enhancing testing precision. Furthermore, the device has a compact structure and reasonable design, thus improving the rational utilization of space. Attached Figure Description

[0023] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0024] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram of the feeding unit of a preferred embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of the structure of the first detection unit in a preferred embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram of the structure of the first transfer component in a preferred embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram of the structure of the second detection unit in a preferred embodiment of the present invention.

[0029] Figure 6 This is a schematic diagram of the structure of the third camera assembly according to a preferred embodiment of the present invention.

[0030] Figure 7 This is a schematic diagram of the structure of the light source assembly according to a preferred embodiment of the present invention.

[0031] Figure 8 This is a schematic diagram of the feeding unit of a preferred embodiment of the present invention.

[0032] Explanation of reference numerals in the accompanying drawings: 1. Frame; 2. Feeding unit; 20. First frame; 21. Limiting baffle; 22. Roller assembly; 23. First drive mechanism; 24. First clamping component; 25. Second clamping component; 3. First detection unit; 30. First support platform; 31. Camera module; 310. First camera assembly; 311. Second camera assembly; 4. Second detection unit; 40. Second support platform; 41. Darkroom environment; 42. Light source assembly; 43. Third camera assembly; 5. Unloading unit; 51. First unloading assembly; 52. First unloading assembly; 61. First transfer assembly; 62. Second transfer assembly; 63. Third transfer assembly; 610. First support frame; 611. First connecting plate; 612. First lifting drive component; 613. First mounting plate; 614. First suction nozzle assembly. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0034] LCD polarization bonding is a key step in the manufacturing process of liquid crystal displays (LCDs), mainly involving the attachment of polarizers. Polarizers are attached to the upper and lower surfaces of a glass substrate, respectively, to form the product in this embodiment.

[0035] Reference Figure 1 As shown in Figure *, this utility model discloses an LCD offset accuracy detection device, used to detect the offset accuracy of a product after offset bonding.

[0036] Specifically, the LCD offset accuracy detection equipment includes a frame 1, which serves as a support to carry the entire equipment.

[0037] The LCD offset accuracy testing equipment also includes a feeding unit 2, which is disposed on the frame 1 and is used to feed the product to be tested.

[0038] The LCD offset accuracy testing equipment also includes a transfer unit, which is set on the frame 1. The transfer unit picks up the product and moves the product to a designated position.

[0039] Furthermore, the LCD offset accuracy detection device also includes a first detection unit 3, which is used to perform offset accuracy detection.

[0040] Specifically, the first detection unit includes a first support platform 30 and a camera module 31. The first support platform 30 is movably disposed on the frame 1. The transfer unit places the product on the first support platform 30. The camera module 31 includes a first camera component 310 and a second camera component 311 respectively disposed along the height direction. The first support platform 30 moves between the first camera component 310 and the second camera component 311, and the camera module 31 performs the first image acquisition on the test area of ​​the product to detect the offset accuracy of the product.

[0041] In detail, the area to be tested of the product is the end of the product along its diagonal. Since the product is rectangular in this embodiment, the offset accuracy of the product can be confirmed by detecting the offset accuracy of one of the ends of the product's diagonals.

[0042] Furthermore, the LCD offset accuracy detection device also includes a second detection unit 4, which is used to detect light transmittance.

[0043] Specifically, the second detection unit includes a second support platform 40, a darkroom environment 41, a light source assembly 42, and a third camera assembly 43, wherein the third camera assembly 43 is housed within the darkroom environment 41. The second support platform 40 is disposed on the frame 1, and the second support platform 40 can be moved to the darkroom environment 41 by a drive.

[0044] The light source assembly 42 is movably connected to the second carrier platform 40, and the product can be assembled on the light source assembly 42. After the product flows out of the first detection unit, it is transported to the light source assembly 42 through the transfer unit. The light source assembly 42 moves the product into the darkroom environment 41, and the third camera assembly 43 performs a second image acquisition on the product to detect the light transmittance of the product.

[0045] The LCD offset accuracy testing equipment also includes a feeding unit 5, which is disposed on the frame and feeds the products that have completed the light transmittance test.

[0046] Therefore, it can be understood that the LCD offset accuracy testing equipment protected by this utility model is equipped with a frame, a feeding unit, a transfer unit, a first testing unit, a second testing unit, and a unloading unit. The product to be tested is fed through the feeding unit under the action of the transfer unit, and then passes through the first testing unit, the second testing unit, and the unloading unit in sequence. The offset accuracy is tested in the first testing unit, the light transmittance is tested in the second testing unit, and the product is unloaded through the unloading unit, so as to facilitate batch collection of products and proceed to the next process. The LCD offset accuracy testing equipment of this utility model can improve the testing efficiency, and can test both offset accuracy and light transmittance, which can effectively improve the testing accuracy. In addition, the structure of this utility model is compact and the design is reasonable, thereby improving the rational use of space.

[0047] Specifically, the feeding unit 2 includes a first frame 20, a rolling conveying assembly, a movable clamping assembly, and a limiting baffle 21. The first frame 20 is mounted on the machine frame 1; the rolling conveying assembly includes a roller assembly 22 and a first drive mechanism 23. The roller assembly 22 is horizontally disposed on the first frame 20, and the first drive mechanism 23 is connected to the roller assembly 22 to drive its movement. The product is placed on the roller assembly 22 and can move along a first direction under the drive of the roller assembly 22.

[0048] The movable clamping assembly includes a first clamping member 24 and a second clamping member 25 disposed opposite to each other. The first clamping member 24 and the second clamping member 25 are disposed in the gap of the roller assembly 22, and the first clamping member 24 and the second clamping member 25 are movable in a second direction to limit the product in the second direction, which is perpendicular to the first direction. The limiting baffle 21 is disposed at the end of the first frame 20 to restrict the movement of the product in the first direction.

[0049] In a preferred embodiment, the relay transmission unit includes a first relay component 61, a second relay component 62, and a third relay component 63.

[0050] Specifically, the first transfer component 61 is disposed between the feeding unit 2 and the first detection unit 3 to transfer the product from the feeding unit 2 to the first detection unit 3;

[0051] The second transfer component 62 is disposed between the first detection unit 3 and the second detection unit 4 to transfer the product from the first detection unit 3 to the second detection unit 4;

[0052] The third transfer component 63 is disposed between the second detection unit 4 and the unloading unit 5 to transfer the inspected products to the unloading unit 5.

[0053] In detail, the first transfer component 61 includes a first support frame 610, a first connecting plate 611, a first lifting drive component 612, a first mounting plate 613, and a first suction nozzle assembly 614. The first support frame 610 is mounted on the frame 1, and a first electric slide 6101 is provided on the first support frame 610. The first connecting plate 611 is disposed at the movable end of the first electric slide 6101. The first lifting drive component 612 is disposed on the first connecting plate 611, the first mounting plate 613 is disposed at the movable end of the first lifting drive component 612, and the first suction nozzle assembly 614 is disposed on the first mounting plate 613. The first suction nozzle assembly 614 includes multiple vacuum nozzles. The first lifting drive component 612 includes, but is not limited to, a drive cylinder.

[0054] In detail, the second transfer component 62 is similar in structure to the first transfer component 61, and the third transfer component 63 is similar in structure to the first transfer component 61.

[0055] The second transfer assembly includes a second support frame, a second connecting plate, a second lifting drive component, a second mounting plate, and a second suction nozzle assembly. The second support frame is mounted on the frame 1, and a second electric slide is provided on the second support frame. The second connecting plate is disposed at the movable end of the second electric slide. The second lifting drive component is disposed on the second connecting plate, and the second mounting plate is disposed at the movable end of the second lifting drive component. The second suction nozzle assembly is disposed on the second mounting plate. The second suction nozzle assembly includes multiple vacuum nozzles. The second lifting drive component includes, but is not limited to, a drive cylinder.

[0056] The third transfer component includes a third support frame, a third connecting plate, a third lifting drive, a third mounting plate, and a third suction nozzle assembly. The third support frame is mounted on the frame 1, and a third electric slide is provided on the third support frame. The third connecting plate is located at the movable end of the third electric slide. The third lifting drive is located on the third connecting plate, and the third mounting plate is located at the movable end of the third lifting drive. The third suction nozzle assembly is located on the third mounting plate. The third suction nozzle assembly includes multiple vacuum nozzles. The third lifting drive includes, but is not limited to, a drive cylinder.

[0057] In a preferred embodiment, the first detection unit 3 further includes a first electric cylinder 32, which is mounted on the frame 1. The first support platform 30 is disposed at the movable end of the first electric cylinder 32 so as to move along a first direction under the drive of the first electric cylinder 32.

[0058] In a preferred embodiment, the second detection unit 4 further includes a second electric cylinder 44, which is mounted on the frame 1. The second support platform 40 is disposed at the movable end of the second electric cylinder 44 so as to move along the second direction under the drive of the second electric cylinder 44.

[0059] The first camera assembly 310 and the second camera assembly 311 are spaced apart in the horizontal direction to detect the offset accuracy of the product at both ends along the diagonal direction. In a preferred embodiment, the first camera assembly 310 includes two first cameras, which are spaced apart in the second direction; the second camera assembly 311 includes two second cameras, which are also spaced apart in the second direction. Thus, by controlling the first camera assembly 310 and the second camera assembly 311 to be positioned within the product's detection area (i.e., the four corners), the offset at the four corners can be captured simultaneously to confirm its accuracy.

[0060] In a preferred embodiment, the light source assembly 42 includes a light box 420, a heat sink, a fixture plate 421, and a limiting block 422. The heat sink is disposed at the bottom of the light box 420, and a light source is disposed inside the light box 420. The fixture plate 421 is mounted above the light box 420, and a light-transmitting hole with a shape consistent with the product is formed on the fixture plate 421. The limiting block 422 is disposed at the edge of the light-transmitting hole, and the product is limited by the limiting block 422 to the light-transmitting hole. With this configuration, when the product is placed on the light source assembly 42 and moves with the light source assembly 42 into the darkroom environment 41, the light source assembly 42 provides a bottom-up light source. At the same time, the third camera assembly 43 captures images from above the product and uploads the captured results to the control unit to determine whether the light transmittance of the product meets the requirements.

[0061] Specifically, the feeding unit 5 is used to feed the product that has completed the light transmittance test, and the feeding unit 5 is adjacent to the end of the second bearing platform 40.

[0062] In a preferred embodiment, the unloading unit includes a first unloading component 51, which includes a first conveying roller structure. The first unloading component 51 is used to unload the product whose test results meet the standard. The first conveying roller structure extends along the second direction.

[0063] In addition, the unloading unit also includes a second unloading assembly 52, which includes a second conveying roller structure. The second unloading assembly 52 is used to unload products whose inspection results do not meet the standards. The second conveying roller structure extends along the first direction.

[0064] This setup facilitates the differentiation between qualified and unqualified products. For unqualified products, operators can review and rework them to avoid waste and effectively improve testing efficiency.

[0065] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0066] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0067] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An LCD offset accuracy testing device, used to test the offset accuracy of a finished offset product, characterized in that: include, frame; A feeding unit is disposed on the frame; A transfer unit is disposed on the rack, the transfer unit picks up the product and moves the product to a designated position; The first detection unit includes a first support platform and a camera module. The first support platform is movably mounted on the frame. The transfer unit places the product on the first support platform. The camera module includes a first camera component and a second camera component respectively arranged along the height direction. The first support platform moves between the first camera component and the second camera component and performs the first image acquisition on the area to be tested of the product through the camera module to detect the offset accuracy of the product. The second detection unit includes a second support platform, a darkroom environment, a light source assembly, and a third camera assembly, wherein the third camera assembly is housed within the darkroom environment. The second support platform is mounted on the rack and can be moved to the darkroom environment by a drive; the light source assembly is movably connected to the second support platform, and the product can be assembled onto the light source assembly; after the product flows out of the first detection unit, it is transported to the light source assembly through the transfer unit, and the light source assembly moves the product into the darkroom environment, where the third camera assembly performs a second image acquisition on the product to detect the light transmittance of the product; A feeding unit is disposed on the frame, and the feeding unit transfers and feeds the products that have completed inspection.

2. The LCD offset accuracy detection device according to claim 1, characterized in that: The feeding unit includes a first frame, a rolling conveying assembly, a movable clamping assembly, and a limiting baffle. The first frame is mounted on the machine frame. The rolling conveying assembly includes a roller assembly and a first drive mechanism. The roller assembly is horizontally disposed on the first frame, and the first drive mechanism is connected to the roller assembly to drive the roller assembly to move. The product is placed on the roller assembly and moves along a first direction under the drive of the roller assembly. The movable clamping assembly includes a first clamping member and a second clamping member disposed opposite to each other. The first clamping member and the second clamping member are disposed in the gap of the roller assembly, and the first clamping member and the second clamping member can move along a second direction to limit the product in the second direction, which is perpendicular to the first direction. The limiting baffle is disposed at the end of the first frame to restrict the movement of the product along the first direction.

3. The LCD offset accuracy detection device according to claim 1, characterized in that: The transfer unit includes a first transfer component, a second transfer component, and a third transfer component. The first transfer component is disposed between the loading unit and the first detection unit to transfer the product from the loading unit to the first detection unit. The second transfer component is disposed between the first detection unit and the second detection unit to transfer the product from the first detection unit to the second detection unit. The third transfer component is disposed between the second detection unit and the unloading unit to transfer the inspected product to the unloading unit.

4. The LCD offset accuracy detection device according to claim 3, characterized in that: The first transfer component includes a first support frame, a first connecting plate, a first lifting drive, a first mounting plate, and a first suction nozzle assembly. The first support frame is mounted on the frame and has a first electric slide. The first connecting plate is located at the movable end of the first electric slide. The first lifting drive is located at the first connecting plate. The first mounting plate is located at the movable end of the first lifting drive. The first suction nozzle assembly is located at the first mounting plate.

5. The LCD offset accuracy detection device according to claim 1, characterized in that: The first detection unit further includes a first electric cylinder, which is mounted on the frame, and the first support platform is disposed at the movable end of the first electric cylinder so as to move along a first direction under the drive of the first electric cylinder.

6. The LCD offset accuracy detection device according to claim 1, characterized in that: The second detection unit further includes a second electric cylinder, which is mounted on the frame. The second support platform is disposed at the movable end of the second electric cylinder so as to move along the second direction under the drive of the second electric cylinder.

7. The LCD offset accuracy detection device according to claim 1, characterized in that: The first camera assembly and the second camera assembly are arranged at a distance along the horizontal direction to detect the offset accuracy of the two ends of the product along the diagonal direction; the first camera assembly includes two first cameras, and the second camera assembly includes two second cameras.

8. The LCD offset accuracy detection device according to claim 1, characterized in that: The light source assembly includes a light box, a heat sink, a fixture plate, and a limiting block. The heat sink is located at the bottom of the light box, and the fixture plate is installed above the light box. The fixture plate has a light-transmitting hole that matches the shape of the product. A limiting block is provided at the edge of the light-transmitting hole, and the product is limited to the light-transmitting hole by the limiting block.

9. The LCD offset accuracy detection device according to claim 1, characterized in that: The unloading unit is connected to the end of the second bearing platform. The unloading unit includes a first unloading component, which includes a first transmission roller structure. The first unloading component is used to unload the product whose test results meet the standard.

10. The LCD offset accuracy detection device according to claim 9, characterized in that: The unloading unit further includes a second unloading component, which includes a second conveying roller structure. The second unloading component is used to unload products whose test results do not meet the standards.

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