一种用于投影显示的LCD玻璃基板高精度贴合装置
By employing a dual bonding method combining automatic bonding and manual correction, along with optical detection and fine-tuning mechanisms, the problem of image defects caused by positioning deviations during the bonding process of LCD glass substrates has been solved, achieving high-precision bonding and improved yield.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HEYUAN SIBI ELECTRONICS
- Filing Date
- 2025-08-06
- Publication Date
- 2026-07-17
AI Technical Summary
During the bonding process of LCD glass substrates for projection displays, a positioning deviation of ≥5μm can lead to pattern misalignment, black and white dot defects, or surface scratches in the displayed image, resulting in a decrease in product yield.
It adopts a dual bonding method of automatic bonding and manual correction, combined with an optical detection module and a fine-tuning mechanism, to achieve precise positioning and real-time monitoring of ±2μm. High-precision bonding is achieved through vacuum pump adsorption and robotic arm operation, combined with visual feedback.
This improved the bonding accuracy of the glass substrate, shortened the bonding cycle, and increased the product yield.
Smart Images
Figure CN224519071U_ABST
Abstract
Claims
1. A high-precision LCD glass substrate bonding device for projection display, comprising a mounting frame (1) and a workbench (2), characterized in that, The workbench (2) has first guide rails (3) on both outer walls. The mounting bracket (1) is fixedly connected to the two first guide rails (3). The workbench (2) also includes: Positioning mechanism: slidably connected to the first guide rail (3), the positioning mechanism includes two fixed disks (13), the top outer wall of the fixed disk (13) is provided with a number of equally spaced micro holes, the bottom outer wall of the fixed disk (13) is fixedly connected with a slider and a pointer (5) by bolts, the slider is slidably connected to the first guide rail (3), a vacuum pump (14) is provided on one side outer wall of the fixed disk (13), the pumping end of the vacuum pump (14) is connected to the inside of the fixed disk (13) through a sealed interface, the two fixed disks (13) are used to fix the lower glass substrate; Fine-tuning mechanism: located inside the first guide rail (3); Lifting mechanism: slidably connected to the mounting frame (1).
2. The LCD glass substrate high-precision bonding device for projection display according to claim 1, characterized in that, The first guide rail (3) has a scale line (4) on one outer wall, and the pointer (5) is used in conjunction with the scale line (4).
3. The LCD glass substrate high-precision bonding device for projection display according to claim 2, characterized in that, The top outer wall of the workbench (2) is provided with two second guide rails (8) near the two outer walls. Two positioning blocks (9) are slidably connected on the second guide rails (8). The positioning blocks (9) are "L" shaped.
4. The LCD glass substrate high-precision bonding device for projection display according to claim 3, characterized in that, The long side of the positioning block (9) is parallel to the X-axis direction of the worktable (2), the short side of the positioning block (9) is parallel to the Y-axis direction of the worktable (2), and the inner sides of the two right-angled sides of the positioning block (9) are provided with a 0.5mm chamfer.
5. The LCD glass substrate high-precision bonding device for projection display according to claim 4, characterized in that, The top outer wall of the workbench (2) is provided with an adjusting rod (10) and a limiting rod (11) near the four corners. One end of the limiting rod (11) is provided with a connecting block. One end of the adjusting rod (10) is connected to the bottom outer wall of the connecting block through a bearing. The outer wall of the adjusting rod (10) is connected to an optical detection module (12) by a thread. The camera of the optical detection module (12) is installed at a 45° angle above the diagonal of the workbench (2).
6. The LCD glass substrate high-precision bonding device for projection display according to claim 1, characterized in that, The fine-tuning mechanism includes a lead screw (18) located inside the first guide rail (3). A handwheel (6) is provided on one outer wall of the first guide rail (3). The handwheel (6) is connected to a worm gear (15) via a coupling. A worm (16) is connected to one inner wall of the first guide rail (3) via a bearing. The worm gear (15) and the worm (16) mesh with each other. The lead screw (18) is connected to the slider via a thread.
7. The LCD glass substrate high-precision bonding device for projection display according to claim 6, characterized in that, The lifting mechanism includes a movable plate (7). Two third guide rails are provided on the inner wall of the opposite side of the mounting frame (1). The movable plate (7) is slidably connected to the third guide rails. An electric telescopic rod (19) and four sleeves are provided on the bottom outer wall of the movable plate (7). A connecting rod is slidably connected to the inner wall of the sleeve. A pressure plate is fixedly connected to the movable end of the electric telescopic rod (19) and one end of the connecting rod. Pressure sensors (20) are provided at the four corners of the pressure plate.