A laser altimeter for measuring the thickness of OCA

Abstract

The utility model discloses a laser altimeter for measuring the thickness of OCA, comprising: an operating table and a laser altimeter body arranged above the operating table, a cover plate is placed on the operating table, an OCA optical glue is placed above the cover plate, the laser altimeter body is located directly above the OCA optical glue, and the laser altimeter body alarms when the thickness of the OCA optical glue is less than 5% of the initial thickness during bonding. The laser altimeter has the effect of monitoring the thickness of the OCA optical glue and alarming when the thickness of the OCA optical glue is too thin during bonding.

Description

Technical Field

[0001] The utility model relates to the technical field of cover plate lamination, in particular to a laser altimeter for measuring the thickness of an OCA. Background Art

[0002] Liquid crystal display devices are widely used in various information, communication and consumer electronic products. The liquid crystal display module is mainly composed of a cover plate, a liquid crystal display screen and a backlight module. The cover plate and the liquid crystal display screen are usually bonded together by OCA optical adhesive.

[0003] The OCA bonding process in the prior art is that the cover plate is firstly bonded with the OCA optical adhesive by rollers, and then fully bonded with the LCD screen, and then degassing and curing are performed to complete the bonding operation between the cover plate and the LCD screen. However, since the OCA optical adhesive needs to be bonded with the cover plate by rollers, the rollers roll from one end of the OCA optical adhesive to the other end, and the position where the rollers start rolling generally has a high pressure, which can easily deform the OCA optical adhesive. If the deformation is too large, bubbles are likely to appear in this part during the subsequent bonding process due to the thinning of the OCA optical adhesive. It is difficult for operators to find the problem of too thin thickness of the OCA optical adhesive during the bonding process, which affects the yield of the product. Utility Model Content

[0004] The utility model aims to overcome the shortcomings of the prior art and provide a laser altimeter for measuring the thickness of an OCA.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A laser altimeter for measuring the thickness of an optical fiber adhesive (OCA), comprising: an operating table and a laser altimeter body arranged above the operating table, a cover plate placed on the operating table, an OCA optical adhesive placed above the cover plate, the laser altimeter body being located directly above the OCA optical adhesive, and the laser altimeter body giving an alarm when the thickness of the OCA optical adhesive is less than 5% of the initial thickness when the OCA optical adhesive is bonded.

[0007] In one embodiment, fixed frames are provided on opposite sides of the operating table, the two fixed frames are arranged along the length direction of the operating table, sliding frames are provided on the tops of the two fixed frames, and the laser altimeter body is located between the two sliding frames.

[0008] In one embodiment, a moving frame is slidably arranged between the two sliding frames, the moving frame can slide along the length direction of the sliding frames, and the laser altimeter body is located on the moving frame.

[0009] In one embodiment, a slide groove is provided on one side of the two sliding frames facing each other, the slide groove is provided along the length direction of the sliding frames, and two ends of the movable frame are respectively slidably connected to the inner walls of the slide grooves of the two sliding frames.

[0010] In one embodiment, a screw rod is inserted into the slide groove, and two ends of the screw rod are rotatably connected to two inner walls of the slide groove respectively, and one end of the screw rod passes through the side of the movable frame and is threadedly connected to the movable frame.

[0011] In one embodiment, one end of the screw rod passes through the sliding frame and is connected to a driving motor.

[0012] In one embodiment, a receiving groove is provided in the movable frame, the receiving groove is provided along the length direction of the movable frame, a cylinder is provided in the receiving groove, and the cylinder is fixed to the bottom of the receiving groove.

[0013] In one embodiment, one end of the cylinder is fixed to the bottom of the receiving groove, the piston rod of the cylinder extends in the length direction of the receiving groove and is connected to a slider, the slider is slidably connected to the inner wall of the receiving groove, and the laser altimeter body is fixed to the bottom of the slider.

[0014] In one embodiment, a clearance groove is provided on the bottom side of the movable frame for allowing the laser altimeter body to slide and make way, and the clearance groove is provided along the length direction of the movable frame.

[0015] In one embodiment, an alarm and a controller are provided on the mobile frame, and the laser altimeter body and the alarm are electrically connected to the controller.

[0016] Compared with the prior art, the utility model has at least the following advantages:

[0017] 1. The utility model provides an OCA thickness laser altimeter, which enables the movable frame to move along the length direction of the movable frame by setting two sliding frames. The cylinder enables the laser altimeter body to slide along the length direction of the movable frame, so that the laser altimeter body can be moved to various positions above the OCA optical glue to measure the thickness, thereby monitoring the thickness of the OCA optical glue in real time during bonding. When the laser altimeter body detects that the thickness of a certain position of the OCA optical glue is less than 5% of the initial thickness, the controller controls the alarm to sound an alarm to remind the operator that the product is abnormal and needs attention, thereby reducing the generation of bubbles in the OCA optical glue and improving the product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.

[0019] Figure 1 A schematic diagram of the structure of a laser altimeter for measuring the thickness of OCA provided by the utility model;

[0020] Figure 2 This is a structural schematic diagram of another viewing angle of an OCA thickness laser altimeter provided by the utility model.

[0021] Description of the drawings: 10. Operating table; 20. Laser altimeter body; 30. Cover plate; 40. OCA optical glue; 50. Fixed frame; 60. Sliding frame; 61. Slide groove; 62. Screw; 63. Driving motor; 70. Moving frame; 71. Receiving groove; 72. Cylinder; 73. Sliding block; 74. Yield groove; 80. Alarm; 90. Controller. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.

[0023] A laser altimeter for OCA thickness, referring to Figure 1 , including an operating table 10 and a laser altimeter body 20 disposed above the operating table 10. A cover plate 30 to be bonded with the OCA optical adhesive 40 is placed on the operating table 10, and the OCA optical adhesive 40 is placed above the cover plate 30. The upper and lower sides of the OCA optical adhesive 40 are both provided with heavy release films to protect the adhesiveness of the OCA optical adhesive 40 before bonding. When the OCA optical adhesive 40 is bonded with the cover plate 30, the heavy release film of the OCA optical adhesive 40 facing the cover plate 30 is torn off, and then bonded with the cover plate 30.

[0024] Reference Figure 1 A roller is usually provided above the OCA optical adhesive 40 to roll from one end of the OCA optical adhesive 40 to the other end, so as to achieve the bonding and fixation between the OCA optical adhesive 40 and the cover plate 30.

[0025] Reference Figure 1 and Figure 2 , two opposite sides of the operating table 10 are provided with fixed frames 50, the two fixed frames 50 are arranged in parallel, and the two fixed frames 50 are arranged along the length direction of the operating table 10. The bottom ends of the two fixed frames 50 are connected to the side of the operating table 10, and the top ends of the two fixed frames 50 are provided with a sliding frame 60. The two sliding frames 60 are arranged in parallel, and the two sliding frames 60 are respectively located on the opposite sides of the operating table 10.

[0026] Reference Figure 1 and Figure 2A moving frame 70 is slidably arranged between the two sliding frames 60. A sliding groove 61 is provided on the opposite sides of the two sliding frames 60. The sliding groove 61 is provided along the length direction of the sliding frames 60. The two ends of the moving frame 70 respectively extend into the sliding grooves 61 of the two sliding frames 60 and are slidably connected with the inner walls of the sliding grooves 61, so that the moving frame 70 can slide along the length direction of the sliding frames 60.

[0027] Reference Figure 1 , a screw rod 62 is inserted into the slide groove 61 of the sliding frame 60, and the screw rod 62 is arranged along the length direction of the slide groove 61, and the two ends of the screw rod 62 are rotatably connected to the two inner walls opposite to the slide groove 61. One end of the screw rod 62 passes through the side of the mobile frame 70 and is threadedly connected to the mobile frame 70, so that the mobile frame 70 can slide along the length direction of the screw rod 62. The other end of the screw rod 62 passes out of the sliding frame 60 and is connected to a driving motor 63. The screw rod 62 is rotated by controlling the driving motor 63, so that the mobile frame 70 slides along the length direction of the screw rod 62 under the threaded connection with the screw rod 62. The screw rods 62 in the two sliding frames 60 rotate at the same time, so that the two ends of the mobile frame 70 slide synchronously.

[0028] Further, refer to Figure 1 The laser altimeter body 20 is located on the moving frame 70 , and the laser altimeter body can move along with the sliding of the moving frame 70 , thereby moving along the length direction of the operating table 10 , thereby adjusting the position for measuring the thickness of the OCA optical glue 40 .

[0029] Reference Figure 1 and Figure 2 , a receiving groove 71 is provided in the movable frame 70, and the receiving groove 71 is provided along the length direction of the movable frame 70. A cylinder 72 is provided in the receiving groove 71, and the cylinder 72 is located at the bottom of one side of the receiving groove 71. One end of the cylinder 72 is fixed to the bottom of the receiving groove 71, and the piston rod of the cylinder 72 extends toward the length direction of the receiving groove 71, and is connected to a slider 73, and the slider 73 is slidably connected to the inner wall of the receiving groove 71. The slider 73 can slide along the length direction of the receiving groove 71 to adjust the position under the push of the cylinder 72, and the laser altimeter body 20 is fixed to the bottom of the slider 73, and the laser altimeter body 20 is located directly above the cover plate 30 and the OCA optical glue 40.

[0030] Further, refer to Figure 1, a clearance groove 74 is provided on the bottom side of the moving frame 70, and the clearance groove 74 is provided along the length direction of the moving frame 70. The clearance groove 74 is used to make way for the sliding of the laser altimeter body 20, so that when the cylinder 72 pushes the slider 73 to slide along the length direction of the receiving groove 71, the slider 73 drives the bottom laser altimeter body 20 to slide along the length direction of the receiving groove 71 to adjust the position for measuring the thickness of the OCA optical adhesive 40. The moving frame 70 can move along the length direction of the sliding frame 60 through the cooperation of the two sliding frames 60, and the cylinder 72 can make the laser altimeter body 20 slide along the length direction of the moving frame 70, so that the laser altimeter body 20 can move to various positions above the OCA optical adhesive 40 for thickness measurement, so as to monitor the thickness of the OCA optical adhesive 40 in real time during bonding, so as to avoid the thickness of the OCA optical adhesive 40 being too thin and generating bubbles.

[0031] Further, refer to Figure 1 When the thickness of the OCA optical adhesive 40 is less than 5% of the initial thickness, it means that the thickness of the OCA optical adhesive 40 is close to being too thin and attention should be paid. The mobile frame 70 is provided with an alarm 80 and a controller 90. The laser altimeter body 20 and the alarm 80 are both electrically connected to the controller 90. When the laser altimeter body 20 detects that the thickness of a certain position of the OCA optical adhesive 40 is less than 5% of the initial thickness, the controller 90 controls the alarm 80 to sound an alarm to remind the operator that the product is abnormal and attention should be paid, thereby reducing the generation of bubbles in the OCA optical adhesive 40 and improving the yield of the product.

[0032] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A laser altimeter for measuring the thickness of an OCA, characterized in that: include: An operating table (10) and a laser altimeter body (20) arranged above the operating table (10); a cover plate (30) is placed on the operating table (10); an OCA optical glue (40) is placed above the cover plate (30); the laser altimeter body (20) is located directly above the OCA optical glue (40); and an alarm is triggered when the thickness of the laser altimeter body (20) is less than 5% of the initial thickness when the OCA optical glue (40) is attached.

2. The laser altimeter for measuring the thickness of OCA according to claim 1, characterized in that: Fixed frames (50) are arranged on opposite sides of the operating table (10), the two fixed frames (50) are arranged along the length direction of the operating table (10), the tops of the two fixed frames (50) are provided with sliding frames (60), and the laser altimeter body (20) is located between the two sliding frames (60).

3. The laser altimeter for measuring OCA thickness according to claim 2, characterized in that: A moving frame (70) is slidably arranged between the two sliding frames (60), and the moving frame (70) can slide along the length direction of the sliding frames (60). The laser altimeter body (20) is located on the moving frame (70).

4. The laser altimeter for measuring the thickness of OCA according to claim 3, characterized in that: A slide groove (61) is provided on one side of the two sliding frames (60) facing each other. The slide groove (61) is provided along the length direction of the sliding frames (60). Both ends of the movable frame (70) are respectively slidably connected to the inner walls of the slide grooves (61) of the two sliding frames (60).

5. The laser altimeter for measuring the thickness of OCA according to claim 4, characterized in that: A screw rod (62) is inserted into the slide groove (61), and two ends of the screw rod (62) are rotatably connected to two inner walls of the slide groove (61) respectively. One end of the screw rod (62) passes through the side of the movable frame (70) and is threadedly connected to the movable frame (70).

6. The laser altimeter for measuring the thickness of OCA according to claim 5, characterized in that: One end of the screw rod (62) passes through the outside of the sliding frame (60) and is connected to a driving motor (63).

7. The laser altimeter for measuring the thickness of OCA according to claim 6, characterized in that: The movable frame (70) is provided with a receiving groove (71), the receiving groove (71) being provided along the length direction of the movable frame (70), the receiving groove (71) containing a cylinder (72), and the cylinder (72) being fixed to the groove bottom of the receiving groove (71).

8. The laser altimeter for measuring the thickness of OCA according to claim 7, characterized in that: One end of the cylinder (72) is fixed to the bottom of the accommodating groove (71); the piston rod of the cylinder (72) extends in the length direction of the accommodating groove (71) and is connected to a slider (73); the slider (73) is slidably connected to the inner wall of the accommodating groove (71); and the laser altimeter body (20) is fixed to the bottom of the slider (73).

9. The laser altimeter for measuring the thickness of OCA according to claim 8, characterized in that: A clearance groove (74) for allowing the laser altimeter body (20) to slide and make way is provided on the bottom side of the movable frame (70), and the clearance groove (74) is provided along the length direction of the movable frame (70).

10. The laser altimeter for measuring OCA thickness according to claim 9, characterized in that: An alarm (80) and a controller (90) are arranged on the mobile frame (70), and the laser altimeter body (20) and the alarm (80) are both electrically connected to the controller (90).

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