Mixed liquid crystal display screen with high light transmittance
By incorporating a pressing film and roller structure on the LCD screen, the problem of accidental touches caused by hand contamination is solved, achieving high light transmittance and reliable operation, extending service life, and improving processing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-18
- Publication Date
- 2026-04-03
AI Technical Summary
When workers have lubricating oil or coolant on their hands, they may accidentally touch the LCD screen, causing errors in the equipment's processing parameters or interruptions, thus affecting processing efficiency.
A pressure-sensitive film is installed on the LCD screen. Through the design of rollers and torsion springs, the pressure-sensitive film forms an indentation when pressed, so that it only contacts the touch panel at the pressure point, avoiding accidental touches in contaminated areas. Combined with a sealing film to prevent contaminants from entering, a sliding block and spring structure adjust the movement of the rollers to ensure the flatness of the pressure-sensitive film and its service life.
It effectively avoids accidental touches, improves operational reliability and feel, extends the lifespan of the pressing film, and maintains the clarity and protective performance of the touchpad.
Smart Images
Figure CN121785012A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of liquid crystal touch panel technology, specifically to a high-transmittance hybrid liquid crystal display screen. Background Technology
[0002] High-transmittance hybrid liquid crystal touchpads are a type of liquid crystal display technology that improves light transmission efficiency through technological optimization. The core of this technology lies in balancing light transmittance and display performance. They are commonly found in high-end monitors, laptops, automotive screens, and screens on various other devices.
[0003] In some factories, high-end intelligent equipment, such as machining centers, PLC control cabinets, and temperature controllers, typically use hybrid LCD displays. Workers can control the machine's operation by touching and swiping on the touchpad. However, in most working environments, workers' hands cannot always be kept clean. For example, when loading and unloading materials on a machining center, hands can easily get covered in lubricating oil or coolant. If workers then touch the touchpad, it can easily lead to accidental touches, potentially causing errors in the machine's processing parameters or interrupting the process, thus affecting processing efficiency.
[0004] To address the aforementioned problems, existing technologies offer several solutions. For example, patent application number CN202321597581.2 provides an ultra-thin LCD touchpad with anti-accidental touch functionality. This addresses the issue that existing touchpads, during use, can be damaged by touch and pressing, resulting in poor protection and reduced overall usability. This invention includes a touchpad body with a frame surrounding it. Multiple sets of positioning protection components surround the corners of the frame, with an anti-touch warning component between each set. A warning component is located at the rear of the touchpad body. By using a light strip and a light sensor to continuously flash light, the intensity of the screen light is increased, preventing accidental touches. Depending on the screen's requirements and material, different transparent partitions and tempered glass films can be installed, secured by slots to enhance the screen's anti-touch protection. While this design uses warning components to prevent accidental touches, it cannot completely prevent accidental touches during operation. Summary of the Invention
[0005] The purpose of this invention is to provide a high-transmittance hybrid liquid crystal display screen to solve the problem that when workers' hands are covered with lubricating oil or coolant, touching the touchpad may cause accidental touches, which may lead to incorrect processing parameters or processing interruptions, thus affecting processing efficiency.
[0006] To achieve the above objectives, the present invention provides the following technical solution:
[0007] A high-transmittance hybrid liquid crystal display screen includes a touch panel and a housing. The touch panel is fixedly connected to the housing, and a mounting base is fixedly connected to the housing. Two rotating shafts are connected to the mounting base, and the two rotating shafts are respectively located on both sides of the housing. Rollers are rotatably connected to the two rotating shafts. A torsion spring is provided between the rollers and the rotating shafts. A pressing film is provided between the two rollers. The two ends of the pressing film are fixedly connected to the rollers on both sides. The pressing film is parallel to the touch panel, and the distance between the pressing film and the touch panel is A, where mm1≤A≤2mm. The pressing film is a colorless and transparent polyimide film. When the pressing film is subjected to pressure, it drives the rollers to rotate.
[0008] It's easy to understand that hybrid LCD displays are commonly used on equipment inside factories. Workers can control the machine's operation by touching and swiping on a touchpad. However, in most working environments, workers' hands cannot be kept clean at all times. For example, when loading and unloading materials on a machining center, hands easily get covered in lubricating oil or coolant. Touching the touchpad under these conditions can easily lead to accidental touches, potentially causing incorrect processing parameters or interruptions, thus affecting processing efficiency. This design addresses this by installing a pressing film on one side of the touchpad, completely covering its surface. There is a certain distance between the pressing film and the touchpad. When the pressing film is compressed, it pulls on rollers on both sides. The rollers compress the torsion springs, causing the pressing film to form a depression at the compressed location. When the pressure is released, the torsion springs on the rollers cause them to rotate again. The pressure film is then pulled and flattened. During operation, the operator taps the pressure film, creating an indentation that contacts the touchpad. At this point, only the pressure-bearing area of the pressure film contacts the touchpad. Therefore, contamination of any other part of the pressure film will not affect the contact between the touchpad and the pressure film, preventing accidental touches due to contaminated hands. This avoids errors in processing parameters or interruptions that could affect processing efficiency, ensuring the reliability of the touchpad during operation. Furthermore, the pressure film is a colorless, transparent polyimide film, a highly flexible material capable of significant bending and even rolling. Its excellent flexibility improves the feel during operation, while its high tensile strength prevents elastic deformation, avoiding prolonged pressure that could reduce its lifespan.
[0009] Preferably, the mounting base has a mounting groove, the inner wall of which fits against the outer shell. The mounting base has a mounting chamber inside, which communicates with the outside of the outer shell. The two rotating shafts are connected inside the mounting chamber. A sealing film is fixedly connected around the pressing film. One side of the sealing film is fixedly connected to the mounting base. The touch panel is located inside the mounting chamber. The sealing film and the pressing film isolate the mounting chamber from the outside of the mounting base. The width of the sealing film is twice the maximum vertical distance between the sealing film and the pressing film. The length of the sealing film is greater than the perimeter of the edge of the mounting groove. The sealing film is elastic.
[0010] As is easily understood, this design utilizes a mounting groove in the center of the mounting base, creating a hollow "U" shape. The mounting base is secured to the touchpad housing by adhering to the inner wall of the mounting groove. The pressure film is located on the outer side of the touchpad. Therefore, this design allows for simple installation: align the mounting groove on the mounting base with the housing and place the mounting base onto the touchpad housing. Similarly, disassembly is achieved by simply detaching the touchpad housing from the mounting groove. This design eliminates the need to remove the touchpad housing or the pressure film during installation or removal, simplifying installation and maintenance. Furthermore, the design also utilizes the pressure film... A sealing membrane is provided, with its other side connected to the mounting base. This design completely encloses the touchpad with the pressing membrane, sealing membrane, and mounting base. Therefore, this design prevents moisture, oil, dust, and other impurities from entering between the touchpad and the pressing membrane, thus avoiding contamination of the touchpad and affecting its operation and clarity. When the pressing membrane is pressed, it pulls the sealing membrane. This design is achieved by setting the length and width of the pressing membrane. The width of the sealing membrane is twice the maximum vertical distance between the sealing membrane and the pressing membrane, and the length of the sealing membrane is greater than the perimeter of the mounting groove edge. This ensures that the sealing membrane has sufficient length and width to accommodate the movement of the pressing membrane when it is pressed, preventing it from being pulled during movement and improving the adaptability of the sealing membrane.
[0011] Preferably, the mounting base has sliding blocks slidably connected to both sides, and a spring is provided between the plane of the sliding block near the touch panel and the inner wall of the mounting base. A fixing rod is fixedly connected to the sliding block, and a connecting block is rotatably connected to the fixing rod. The rotating shaft is connected to the connecting block, and the connection point between the rotating shaft and the connecting block is located in the middle of the rotating shaft. A torsion spring is provided between the connecting block and the fixing rod.
[0012] It's easy to understand that when the pressure point of the touchscreen is near one of the four corners of the monitor, the tension exerted by the touchscreen on the roller is concentrated at the end of the roller closest to the pressure point. Since the point of force application is far from the center of the roller, the operator needs to apply more pressure to make the touchscreen contact the touchpad. Furthermore, the tension at the connection point between the touchscreen and the roller on one side is greater than on the other, resulting in uneven force distribution on the touchscreen, which may damage it and reduce its lifespan. Additionally, when the pressure point is near either edge of the monitor, the roller on the side closer to the pressure point needs to rotate a greater distance, while the roller on the side farther from the pressure point rotates less. In this case, the fingers applying pressure are pressed against the touchscreen on both sides, and both sides of the touchscreen exert a reaction force on the fingers. The pressure exerted by the touchscreen on the side closer to the touchpad edge is greater than the pressure exerted on the fingers on the other side, resulting in excessively different force distribution on both sides of the finger when clicking. If the operator does not... In areas where attention is paid to clicking, habitual clicking may result in insufficient clicking force, thus affecting operation. Therefore, this design incorporates a sliding block on the mounting base. When the pressing point is near one of the four corners of the display, the tension on the roller near the pressing point is greater than that on the other side. At this time, the rotating shaft drives the connecting block to compress the torsion spring, causing the roller near the pressing point to swing towards the pressing point. This reduces the distance the roller on that side rotates when the pressing membrane contacts the touchpad, thus avoiding excessive tension on the pressing membrane, preventing damage, and increasing the lifespan of the pressing membrane. The design also incorporates a spring between the sliding block and the inner wall of the mounting base. When the pressing point is near the edge of either side of the display, the pressing membrane on that side applies greater tension to the roller, causing the sliding block to compress the spring and move towards the pressing point, thus moving the roller towards the pressing point. This reduces the tension on that side of the pressing membrane, thereby reducing the overall force required when pressing the corners or edges of the pressing membrane and improving the feel of the click.
[0013] Preferably, the rotating shaft is rotatably connected to the connecting block 1, two telescopic rods are fixedly connected to the rotating shaft, and an operating rod is slidably connected to the two telescopic rods. Two limiting blocks 1 are fixedly connected to the operating rods. Limiting grooves 1 are formed at both ends of the connecting block 1. The limiting block 1 contacts the inner wall of the limiting groove 1. Opening and closing doors are respectively hinged to both sides of the mounting base, and the opening and closing doors on both sides are aligned with the operating rods on both sides.
[0014] It's easy to understand that with prolonged use, the pressure-sensitive membrane, despite its relatively weak elasticity, gradually loosens under pressure. Additionally, the torsion spring on the rollers ages over time, reducing its torque. Consequently, due to the membrane's aging and loosening, and the reduced torque of the spring, the rollers on both sides of the touchpad cannot straighten the membrane, causing it to collapse and resulting in accidental touches. Therefore, this design incorporates a telescopic rod on the rotating shaft, with an operating lever connected to it. When pressed... When the pressure film or torsion spring ages and the roller can no longer straighten the pressure film, the operator can open the opening and closing doors on both sides of the mounting base and pull the operating lever inside the mounting base to move the limit block on the operating lever away from the limit groove. At this time, rotate the operating lever to make the roller rotate in the direction of straightening the pressure film. After the pressure film is straightened, push the operating lever to make the limit block re-engage with the limit groove. At this time, the roller will straighten the pressure film again and the pressure film will return to normal. Therefore, this design avoids the roller being unable to straighten the pressure film due to aging and loosening of the pressure film and decrease in the torque of the torsion spring, thus improving the service life of the pressure film and the torsion spring.
[0015] Preferably, a second connecting block is fixedly connected to the fixed rod, a second limiting groove is formed on the second connecting block, an arc block is slidably connected to the first connecting block, a second spring is provided between the arc block and the first connecting block, a second limiting block is fixedly connected to the arc block, the second limiting block contacts the inner wall of the second limiting groove, and a pressing rod is fixedly connected to the operating rod, the pressing rod contacts the arc block.
[0016] It's easy to understand that with prolonged use, the torque of the second torsion spring will decrease due to repeated rotations. At this point, the rollers on both sides of the touchpad cannot maintain parallelism with the edges of the touchpad, causing the distance between one end of the rollers to shorten. This leads to the collapse of the pressing membrane, resulting in accidental touches when the pressing membrane contacts the touchpad. Therefore, this design incorporates a pressing lever on the operating rod. When the rollers tilt, the operator can open the opening door and pull the operating rod. The pressing lever moves away from the arc block, causing the arc block to lose pressure and be pushed away by the second spring. At this point, the second limiting block on the arc block moves away from the second limiting groove. Rotating the operating rod to align the rollers with the touchpad edge and then pushing the operating rod again causes the pressing lever to press against the arc block, causing the second limiting block on the arc block to re-engage with the second limiting groove. This allows the rollers on both sides of the touchpad to straighten the pressing membrane again. Therefore, this design improves the lifespan of the second torsion spring. Furthermore, this design is simple and compact, allowing the operating rod to adjust not only the roller's rotation but also its tilt angle, thus improving the operator's work efficiency.
[0017] Preferably, multiple connecting strips are provided on both sides of the pressing film, and the multiple connecting strips are arranged at equal intervals on the pressing film. Each connecting strip has a buckle at both ends. The roller has multiple slots, which are evenly distributed around the circumference of the roller. The distance between the multiple connecting strips is equal to the arc distance between the multiple slots, and the connecting strips are embedded in the slots.
[0018] It's easy to understand that when an operator adjusts the rotation of the roller using the lever, the connection between the pressing membrane and the roller will rotate with the roller. At this time, the connection will rotate from the highest point of the roller to the side of the roller away from the touchpad. Therefore, after several adjustments, the connection between the pressing membrane and the roller will gradually move away from the highest point of the roller. When the pressing membrane is pressed again at this time, while pulling the roller to rotate, part of the tension in the pressing membrane will become pressure on the highest point of the roller. Therefore, clicking the pressing membrane to contact the touchpad requires greater pressure, which increases the possibility of damage to the pressing membrane and reduces its lifespan. Therefore, this design sets multiple connecting strips on both sides of the pressing membrane and opens multiple slots on the roller. Whenever the operator adjusts the rotation of the roller using the lever, they can press the connecting strips on the pressing membrane to engage with the slots on the roller, so that the connection between the pressing membrane and the roller remains at the highest point after adjustment. Therefore, this design avoids the need for greater pressure to click the pressing membrane to contact the touchpad after several roller adjustments, thus preventing damage to the pressing membrane, improving the lifespan of the pressing membrane, and improving the feel of finger clicking.
[0019] Preferably, a circular arc rod is fixedly connected to both ends of the roller, and a circular arc rod is fixedly connected to the circular arc rod. The circular arc rod is inclined toward the side where the roller is located. A circular arc rod is rotatably connected to both sides of the mounting base, and the circular arc rod is in contact with the circular arc rod.
[0020] As is easily understood, since the sliding block and connecting block 1 have no restriction on rotation, regardless of whether the pressing position of the pressing film is located at the corner, edge, or center of the touchpad, the sliding block will compress the spring 1 to a certain extent to slide, and the connecting block 1 will also rotate. This design uses arc rods 1 fixedly connected to both ends of the rollers, with the arc rods 1 contacting the arc rods 3 on the mounting base. When the pressing position of the pressing film is located in the center of the touchpad, since the rotation angle of the rollers on both sides is small, the arc rods 1 will follow the rollers to rotate, but will not move away from the arc rods 3. Therefore, the arc rods 1 will restrict the movement and swing of the rollers. However, when the pressing position of the pressing film is located at the corner or edge of the touchpad, one side of the roller will rotate at a larger angle, and the arc rods 1 will follow the rollers to rotate. As the roller rotates and moves away from the arc rod three, the arc rod one no longer restricts the movement and oscillation of the roller. Therefore, this design allows the roller to move and oscillate only when it is subjected to a large pulling force or a large rotation angle, thus avoiding damage to the pressing film due to excessive pulling force. When the rotation angle of the roller is not greater than the set angle, the roller cannot move or oscillate, ensuring that the clicking force is not affected when the operator clicks the center of the pressing film. When clicking the corner or edge, the movement and oscillation of the roller will reduce the clicking force, thus ensuring that the clicking force in the center and edge areas of the pressing film is not too different. This allows the operator to better adapt to the overall clicking force of the pressing film, thereby improving the feel of the finger clicking.
[0021] Preferably, a push rod is slidably connected to the mounting base, and one end of the push rod is in contact with the sealing film.
[0022] It's easy to understand that in harsh working environments, dust and grease can accumulate on the sealing membrane near the ground due to gravity. Also, when workers wipe and clean the pressing membrane, dirt can easily fall onto it. If this dust and grease isn't cleaned regularly, it will clump together, affecting the movement of the pressing membrane and accelerating its aging. Furthermore, because the width of the sealing membrane is twice the vertical distance from the edge of the mounting base outside the mounting chamber to the pressing membrane, and the length of the sealing membrane is greater than the perimeter of the mounting groove edge, the sealing membrane is folded and stacked between the mounting base and the pressing membrane. Therefore, dust and grease easily accumulate in the folds of the sealing membrane. Since the sealing membrane is located between the mounting base and the pressing membrane, it's difficult to unfold it for cleaning. Therefore, this design uses a sliding push rod connected to the mounting base. One end of the push rod inside the mounting base contacts the sealing membrane. When cleaning, workers can push the end of the push rod outside the mounting base to open and unfold the sealing membrane, making it easier to clean. This design facilitates the cleaning of the sealing membrane.
[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0024] 1. This invention provides a pressing film on one side of the touchpad. When the pressing film is compressed, the roller compresses the torsion spring, causing the pressing film to form a depression at the compressed position. When the pressure is released, the roller rotates and pulls the pressing film, restoring it to its flat state. Therefore, when the operator clicks on the pressing film, the depression is formed, allowing the operator to contact the touchpad. Thus, contamination of any other part of the pressing film will not affect the contact between the touchpad and the pressing film, preventing accidental touches caused by contaminated hands and improving the reliability of the touchpad during operation.
[0025] 2. This invention, by setting a sealing membrane around the pressing membrane, prevents impurities such as moisture, oil, and dust from entering between the touchpad and the pressing membrane, thus avoiding contamination of the touchpad and affecting its operation and clarity. Furthermore, by setting the length and width of the pressing membrane, this design ensures that when the pressing membrane is pressed and pulled, the sealing membrane has sufficient length and width to accommodate the movement of the pressing membrane, thereby improving the adaptability of the sealing membrane.
[0026] 3. This invention, by setting a sliding block on the mounting base, allows the roller to swing towards the end closest to the pressing point when the pressing point is near one of the four corners of the display. This reduces the distance the roller rotates on that side when the pressing film contacts the touchpad, thus improving the lifespan of the pressing film. When the pressing point is near the edge of either side of the display, the pressing film on that side applies a greater pulling force to the roller, causing the roller to move towards the pressing point. This reduces the pulling force on that side of the pressing film, thereby reducing the force difference between the two sides of the pressing finger, preventing accidental touches due to uneven finger force, and improving the feel of finger clicking. Attached Figure Description
[0027] Figure 1 This is a schematic diagram of the structure of the high-transmittance hybrid liquid crystal display screen of the present invention;
[0028] Figure 2 for Figure 1 Sectional view at point AA;
[0029] Figure 3 for Figure 2 Enlarged view at point B in the middle;
[0030] Figure 4 for Figure 1 Sectional view at CC;
[0031] Figure 5 for Figure 4 Enlarged view at point D;
[0032] Figure 6 This is a schematic diagram of the structure of the front side of the drum of the present invention;
[0033] Figure 7 This is a schematic diagram of the structure of the rear side of the drum of the present invention;
[0034] Figure 8 This is a schematic diagram of the structure of the connecting block one of the present invention;
[0035] Figure 9 for Figure 8 A schematic diagram of the structure after the arc block has been removed;
[0036] Figure 10 This is a schematic diagram of the structure of the fixing rod of the present invention.
[0037] In the diagram: 1. Touchpad; 2. Housing; 3. Mounting base; 4. Rotating shaft; 5. Roller; 6. Torsion spring one; 7. Pressing membrane; 8. Mounting groove; 9. Mounting chamber; 10. Sealing membrane; 11. Sliding block; 12. Spring one; 13. Fixing rod; 14. Connecting block one; 15. Torsion spring two; 16. Telescopic rod; 17. Operating rod; 18. Limiting block one; 19. Limiting groove one; 20. Opening / closing door; 21. Connecting block two; 22. Limiting groove two; 23. Arc block; 24. Spring two; 25. Limiting block two; 26. Pressing rod; 27. Connecting strip; 28. Buckle; 29. Slot; 30. Arc rod one; 31. Arc rod two; 32. Arc rod three; 33. Push rod. Detailed Implementation
[0038] This invention provides a high-transmittance hybrid liquid crystal display screen, the technical solution of which is as follows:
[0039] Please see Figures 1 to 10 A high-transmittance hybrid liquid crystal display screen includes a touch panel 1 and a housing 2. The touch panel 1 is fixedly connected to the housing 2. A mounting base 3 is fixedly connected to the housing 2. Two rotating shafts 4 are connected to the mounting base 3. The two rotating shafts 4 are located on both sides of the housing 2. Rollers 5 are rotatably connected to the two rotating shafts 4. A torsion spring 6 is provided between the rollers 5 and the rotating shafts 4. A pressing film 7 is provided between the two rollers 5. The two ends of the pressing film 7 are fixedly connected to the rollers 5 on both sides. The pressing film 7 is parallel to the touch panel 1, and the distance between the pressing film 7 and the touch panel 1 is A, where A = 2mm. The pressing film 7 is a colorless transparent polyimide film. When the pressing film 7 is subjected to pressure, it drives the rollers 5 to rotate.
[0040] For further details, please refer to Figures 1 to 10The mounting base 3 has a mounting groove 8, the inner wall of which fits against the outer shell 2. The mounting base 3 has a mounting chamber 9 inside, which communicates with the outside of the outer shell 2. Two rotating shafts 4 are connected inside the mounting chamber 9. A sealing membrane 10 is fixedly connected around the pressing membrane 7, and one side of the sealing membrane 10 is fixedly connected to the mounting base 3. The touch panel 1 is located inside the mounting chamber. The sealing membrane 10 and the pressing membrane 7 isolate the mounting chamber 9 from the outside of the mounting base 3. The width of the sealing membrane 10 is twice the maximum vertical distance between the sealing membrane 10 and the pressing membrane 7. The length of the sealing film 10 is greater than the perimeter of the edge of the mounting groove 8. The sealing film 10 has a certain elasticity. Sliding blocks 11 are slidably connected to both sides of the mounting base 3. A spring 12 is provided between the plane of the sliding block 11 near the touch panel 1 and the inner wall of the mounting base 3. A fixing rod 13 is fixedly connected to the sliding block 11. A connecting block 14 is rotatably connected to the fixing rod 13. The rotating shaft 4 is connected to the connecting block 14. The connection point between the rotating shaft 4 and the connecting block 14 is located in the middle of the rotating shaft 4. A torsion spring 15 is provided between the connecting block 14 and the fixing rod 13.
[0041] Please see Figures 1 to 10 The rotating shaft 4 is rotatably connected to the connecting block 14. Two telescopic rods 16 are fixedly connected to the rotating shaft 4. An operating rod 17 is slidably connected to the two telescopic rods 16. Two limiting blocks 18 are fixedly connected to the operating rod 17. Limiting grooves 19 are opened at both ends of the connecting block 14. The limiting blocks 18 contact the inner wall of the limiting grooves 19. Opening doors 20 are hinged to both sides of the mounting base 3. The opening doors 20 are aligned with the operating rods 17 on both sides. A connecting block 21 is fixedly connected to the fixing rod 13. A limiting groove 22 is opened on the connecting block 21. An arc block 23 is slidably connected to the connecting block 14. A spring 24 is set between the arc block 23 and the connecting block 14. A limiting block 25 is fixedly connected to the arc block 23. The limiting block 25 contacts the inner wall of the limiting groove 22. A button is fixedly connected to the operating rod 17. The pressing rod 26 contacts the arc block 23. Multiple connecting strips 27 are provided on both sides of the pressing film 7. The multiple connecting strips 27 are arranged at equal intervals on the pressing film 7. The two ends of the connecting strips 27 are provided with buckles 28. Multiple slots 29 are opened on the roller 5. The multiple slots 29 are evenly distributed on the circumference of the roller 5. The distance between the multiple connecting strips 27 is equal to the arc distance between the multiple slots 29. The connecting strips 27 are embedded in the slots 29. Arc rod 1 30 is fixedly connected to both ends of the roller 5. Arc rod 2 31 is fixedly connected to arc rod 1 30. Arc rod 2 31 is inclined towards the side where the roller 5 is located. Arc rod 3 32 is rotatably connected to both sides of the mounting base 3. Arc rod 3 32 contacts arc rod 1 30. Push rod 33 is slidably connected to the mounting base 3. One end of push rod 33 contacts the sealing film 10.
[0042] Please see Figures 1 to 10When the operator clicks on the touchpad 1 near the center of the pressing membrane 7, pressure is applied to the pressing membrane 7. The pressing membrane 7 is pulled by the pressure, causing the rollers 5 on both sides to rotate at a certain angle, forming a "V" shape. At this time, the bottom of the pressing membrane 7 contacts the touchpad 1. The rollers 5 on both sides will drive the arc rods 30 and 31 on both sides of the rollers 5 to rotate. During the rotation of the arc rod 30, it will remain in contact with the arc rod 32. When the operator finishes the operation, the pressing membrane 7 loses pressure, and the rollers 5 on both sides of the pressing membrane 7 are rotated by the torque of the torsion spring 6, which straightens the pressing membrane 7.
[0043] Please see Figures 1 to 10 When the operator clicks on the touchpad 1 near the edge of the pressing membrane 7, pressure is applied to the pressing membrane 7. The pressing membrane 7 is pulled by this pressure, causing the rollers 5 on both sides to rotate. The roller 5 closer to the pressing point rotates at a greater angle, and the arc rods 30 and 31 on either side of this roller 5 also rotate a greater distance. When the arc rod 31 rotates too far, it will move away from the arc rod 32. At this point, the roller 5 on this side loses the support of the arc rod 32, and the sliding block 11... The spring 12 is squeezed and the roller 5 moves toward the touch panel 1. The connecting block 14 also squeezes the torsion spring 2 15 and causes the roller 5 to swing toward the closer point of pressure. When the roller 5 stops moving and rotating in all directions, the pressing film 7 contacts the touch panel 1. When the operator finishes the operation, the pressing film 7 loses pressure. The rollers 5 on both sides of the pressing film 7 are subjected to the action of the torsion spring 1 6, the torsion spring 2 15 and the spring 12, which straightens the pressing film 7. The arc rod 2 31 also re-contacts the arc rod 3 32.
[0044] Please see Figures 1 to 10 When the operator is adjusting the roller 5, they can open the opening doors 20 on both sides of the mounting base 3 and pull the operating lever 17 inside the mounting base 3. This will cause the limiting block 18 on the operating lever 17 to move away from the limiting groove 19, and the pressing lever 26 on the operating lever 17 to move away from the arc block 23. The arc block 23 will lose pressure and be pushed open by the spring 24. At this time, the limiting block 25 on the arc block 23 will move away from the limiting groove 22. Then, the operator can rotate the operating lever 17 to make the roller 5 rotate in the direction of straightening the pressing film 7, and make the roller 5 approach the... The edges of the touchpad 1 are parallel. When the pressing film 7 is straightened and the surface of the pressing film 7 is flat and without wrinkles, push the operating lever 17 so that the limiting block 18 re-engages with the limiting groove 19. At this time, the pressing rod 26 squeezes the arc block 23. At this time, the limiting block 25 on the arc block 23 re-engages with the limiting groove 22. At this time, the roller 5 will straighten the pressing film 7 again and the pressing film 7 returns to normal. At this time, press the connecting strips 27 on both sides of the pressing film 7 so that the connecting strips 27 on both sides are respectively embedded in the slots 29 on the rollers 5 on both sides.
[0045] The specific embodiment of the present invention has been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the embodiments described above. For those skilled in the art, various changes, modifications, substitutions, and variations made to these embodiments without departing from the principles and ideas of the present invention should still fall within the protection scope of the present invention.
Claims
1. A high-transmittance hybrid liquid crystal display screen, comprising a touch panel (1) and a housing (2), wherein the touch panel (1) is fixedly connected to the housing (2), characterized in that, A mounting base (3) is fixedly connected to the outer shell (2). Two rotating shafts (4) are connected to the mounting base (3). The two rotating shafts (4) are located on both sides of the outer shell (2). Rollers (5) are rotatably connected to the two rotating shafts (4). A torsion spring (6) is provided between the rollers (5) and the rotating shafts (4). A pressing film (7) is provided between the two rollers (5). The two ends of the pressing film (7) are fixedly connected to the rollers (5) on both sides. The pressing film (7) is parallel to the touch panel (1), and the distance between the pressing film (7) and the touch panel (1) is A, where 1mm≤A≤2mm. The pressing film (7) is a colorless transparent polyimide film. When the pressing film (7) is subjected to pressure, it drives the rollers (5) to rotate.
2. The high-transmittance hybrid liquid crystal display screen according to claim 1, characterized in that, The mounting base (3) has a mounting groove (8) with its inner wall fitting against the outer shell (2). The mounting base (3) has a mounting chamber (9) inside, which is connected to the outside of the outer shell (2). The two rotating shafts (4) are connected inside the mounting chamber (9). The pressing membrane (7) is fixedly connected with a sealing membrane (10) around its perimeter. One side of the sealing membrane (10) is fixedly connected to the mounting base (3). The touch panel (1) is located inside the mounting chamber. The sealing membrane (10) and the pressing membrane (7) isolate the mounting chamber (9) from the outside of the mounting base (3). The width of the sealing membrane (10) is twice the maximum vertical distance between the sealing membrane (10) and the pressing membrane (7). The length of the sealing membrane (10) is greater than the perimeter of the edge of the mounting groove (8). The sealing membrane (10) is elastic.
3. A high-transmittance hybrid liquid crystal display screen according to claim 2, characterized in that, Sliding blocks (11) are slidably connected to both sides of the mounting base (3). A spring (12) is provided between the plane of the sliding block (11) near the touch panel (1) and the inner wall of the mounting base (3). A fixing rod (13) is fixedly connected to the sliding block (11). A connecting block (14) is rotatably connected to the fixing rod (13). The rotating shaft (4) is connected to the connecting block (14). The connection between the rotating shaft (4) and the connecting block (14) is located in the middle of the rotating shaft (4). A torsion spring (15) is provided between the connecting block (14) and the fixing rod (13).
4. A high-transmittance hybrid liquid crystal display screen according to claim 3, characterized in that, The rotating shaft (4) is rotatably connected to the connecting block (14). Two telescopic rods (16) are fixedly connected to the rotating shaft (4). An operating rod (17) is slidably connected to the two telescopic rods (16). Two limiting blocks (18) are fixedly connected to the operating rod (17). Limiting grooves (19) are opened at both ends of the connecting block (14). The limiting block (18) contacts the inner wall of the limiting groove (19). Opening and closing doors (20) are hinged to both sides of the mounting base (3). The opening and closing doors (20) on both sides are aligned with the operating rods (17) on both sides.
5. A high-transmittance hybrid liquid crystal display screen according to claim 4, characterized in that, A connecting block two (21) is fixedly connected to the fixed rod (13). A limiting groove two (22) is opened on the connecting block two (21). An arc block (23) is slidably connected to the connecting block one (14). A spring two (24) is provided between the arc block (23) and the connecting block one (14). A limiting block two (25) is fixedly connected to the arc block (23). The limiting block two (25) is in contact with the inner wall of the limiting groove two (22). A pressing rod (26) is fixedly connected to the operating rod (17). The pressing rod (26) is in contact with the arc block (23).
6. A high-transmittance hybrid liquid crystal display screen according to claim 4, characterized in that, Multiple connecting strips (27) are provided on both sides of the pressing film (7). The multiple connecting strips (27) are arranged at equal intervals on the pressing film (7). The two ends of the connecting strips (27) are provided with buckles (28). Multiple slots (29) are opened on the roller (5). The multiple slots (29) are evenly distributed on the circumference of the roller (5). The distance between the multiple connecting strips (27) is equal to the arc distance between the multiple slots (29). The connecting strips (27) are embedded in the slots (29).
7. A high-transmittance hybrid liquid crystal display screen according to claim 4, characterized in that, The roller (5) is fixedly connected to two ends of a circular arc rod (30), and a circular arc rod (31) is fixedly connected to the circular arc rod (30). The circular arc rod (31) is inclined toward the side where the roller (5) is located. The mounting base (3) is rotatably connected to two sides of a circular arc rod (32), and the circular arc rod (32) is in contact with the circular arc rod (30).
8. A high-transmittance hybrid liquid crystal display screen according to claim 2, characterized in that, A push rod (33) is slidably connected to the mounting base (3), and one end of the push rod (33) is in contact with the sealing film (10).
Citation Information
Patent Citations
Ultrathin liquid crystal display screen with mistaken touch prevention effect
CN220155120U