Light guide plate processing equipment for improving LGP brightness

Abstract

The utility model relates to the field of light guide plate manufacturing, and discloses light guide plate processing equipment for improving LGP brightness, which comprises a support frame, one side of the support frame is rotatably connected with a support sleeve, one side of the support sleeve is fixedly connected with a lower cover, and the lower cover is rotatably connected with an upper cover; one end of each second telescopic rod is rotationally connected with the lower cover, the other end of each second telescopic rod is rotationally connected with an inlay plate, and the inlay plate is connected with a female die; the auxiliary mechanism is connected with the upper cover, and the bottom of the auxiliary mechanism is connected with a male mold; according to the utility model, secondary lattice point processing is utilized, small-diameter lattice points are embedded among normal-diameter lattice points, the lattice point density is increased, light emitted by an LED passes through the lattice point surface, most of the light is scattered and reflected, and the light utilization efficiency is improved, so that the front brightness of the LGP is improved, and the brightness of the LGP is improved through the density change of the small lattice points. The lattice point density variation trend is adjusted, and the uniformity of the light guide plate is improved.

Description

Technical Field

[0001] The utility model relates to the field of light guide plate manufacturing, in particular to a light guide plate processing device for improving the brightness of LGP. Background Art

[0002] With the development of electronic technology, the market for flat-panel displays (LCDs) is rapidly expanding. Liquid crystal displays (LCDs) are required to be thin, lightweight, and low power. Backlight modules (BGMs) provide the light source for LCDs, and the performance of the backlight directly impacts the quality of the display. Improving backlight module performance has a profound impact on the LCD industry. Backlight modules can be categorized as direct-lit or edge-lit, depending on the location of the light source. Edge-lit backlights are commonly used in the industry. These light sources are placed to the side of the backlight module. After the LED emits light, a light guide plate (LGP) redirects the light and evenly distributes it. A diffuser film and a brightness enhancement film converge the light within the luminous area, achieving a specific brightness standard. The effectiveness of the LGP directly determines the visual quality and brightness of the backlit LCD module. A LGP is a high-tech product that transforms a point or line light source into a surface light source. It is primarily used in the display industry as a backlight source. Market demands require backlights to be ultra-thin, ultra-bright, uniform, energy-efficient, and environmentally friendly, with excellent visual quality. The industry uses edge-lit backlight modules, where the LED light source is located on one side of the light guide plate (LGP). Light emitted by the LED propagates through the LGP, undergoing reflections and total internal reflections from various surfaces. Three surfaces (as shown in the figure) influence the optical performance of the LGP: the light-entry surface a, the light-exit surface b, and the dot surface c. Dot surface c is opposite to light-exit surface b, and the structure of dot surface c directly affects the intensity of the light emitted by the LED entering the LGP. A higher dot density improves light utilization efficiency while ensuring uniformity. Currently, the light-reflecting surface of the LGP has a standard dot structure. When selecting a sawtooth structure on the light-entry surface and a micro-card structure on the light-exit surface, dot density graduation parameters are determined based on the actual LGP thickness, LGP length, design dot size, and processing dot depth. To maximize light utilization, the dot density is typically sparse at the light source and dense at the tail, resulting in poor dot connectivity. Conventional LGPs reach a certain density threshold, where brightness cannot be further increased. Summary of the Invention

[0003] In order to solve the technical problem of limited brightness improvement, the utility model provides a light guide plate processing equipment for improving the brightness of LGP.

[0004] The utility model adopts the following technical solution to achieve: a light guide plate for improving the brightness of LGP, comprising a light guide plate, a side of which is provided with a light incident surface, one side of the light guide plate is a dot surface, and the other side is a light exit surface,

[0005] A processing equipment for a light guide plate that improves the brightness of an LGP comprises: a support frame, one side of which is rotatably connected to a support sleeve, one side of the support sleeve is fixedly connected to a lower cover, and the lower cover is rotatably connected to an upper cover; a second telescopic rod is provided, one end of the second telescopic rod is rotatably connected to the lower cover, and the other end is rotatably connected to an inlay plate, and the inlay plate is connected to a female mold; an auxiliary mechanism is connected to the upper cover, and the bottom of the auxiliary mechanism is connected to a male mold; an air pump is fixedly connected to the support frame, and an output end of the auxiliary mechanism is connected to a pressure pipe connected to the lower cover, and the upper cover is connected to an air vent; a power component is fixedly connected to one side of the support frame, and the output end of the power component is transmission-connected to a winding roller, and a pull rope connected to the upper cover is sleeved on the winding roller; a support plate is fixedly connected to one side of the support frame, and one end of the support plate is connected to a feeding pipe connected to the female mold.

[0006] As a further improvement of the above scheme, the auxiliary mechanism includes: a telescopic rod 1, whose fixed end is connected to the upper cover, the movable end of the telescopic rod 1 is fixedly connected to a slider, and the outer side of the slider is slidably sleeved with a laser instrument; a reflective sleeve, which is fixedly connected to the laser instrument, and the reflective sleeve is fixedly connected to a follower block; an electric slide rail, which is fixedly connected to the upper cover, the movable end of the electric slide rail is fixedly connected to the follower block, and the bottom of the reflective sleeve is slidably sleeved with a light-transmitting plate in contact with the male mold.

[0007] As a further improvement of the above solution, a limiting ring is fixedly connected inside the upper cover, and a sliding strip that matches the limiting ring is connected to the outer side of the male mold.

[0008] As a further improvement of the above solution, one side of the support sleeve is clamped with a limiting pin that cooperates with the support frame, and the input end of the air pump is connected to a filter box connected to the support frame.

[0009] As a further improvement of the above solution, a plurality of reflective plates are provided in the reflective sleeve, one side of the upper cover is fixedly connected to a telescopic rod three, and one side of the telescopic rod three is fixedly connected to a contact block in contact with the male mold.

[0010] As a further improvement of the above solution, a plurality of vibration motors are fixedly connected to the bottom of the lower cover, a matching arc that matches the lower cover is connected to one side of the upper cover, and a control valve is provided on the air vent.

[0011] As a further improvement of the above solution, the male mold includes: a dot insert, one side of which is provided with a nozzle hole connected to the feeding pipe; and a dot sheet, which is provided on the dot insert.

[0012] As a further improvement of the above-mentioned scheme, the mother mold includes: a sprue block insert, a block insert is correspondingly arranged on one side of which, and an inlet insert is connected between the sprue block insert and the block insert; a serrated slider insert, which is arranged on both sides of the sprue block insert and the block insert, and the tail slide positions are connected on both sides of the serrated slider insert.

[0013] As a further improvement of the above solution, the mesh sheet includes a plurality of large holes and small holes, and the diameter of the large holes is times that of the small holes.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. By using secondary dot processing, small-diameter dots are embedded between normal-diameter dots to increase dot density. This allows the light emitted by the LED to pass through the dot surface, where most of the light is scattered and reflected, improving light utilization efficiency and thus increasing the brightness of the LGP front. At the same time, by changing the density of small dots, the dot density change trend is adjusted to improve the uniformity of the light guide plate.

[0016] 2. The manufacturing device can be formed in one step, which is convenient for the design of the outlets, the overall manufacturing process, the overall production efficiency, the error rate, and the progress of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of a light guide plate;

[0018] Figure 2 It is a schematic diagram of the processing equipment structure;

[0019] Figure 3 It is a schematic diagram of the main cross-section of the processing equipment;

[0020] Figure 4 It is a schematic diagram of a left-side sectional view of the processing equipment;

[0021] Figure 5 for Figure 4 A schematic diagram of the structure enlarged in the middle;

[0022] Figure 6 This is a schematic diagram of the male model when viewed from above;

[0023] Figure 7 Schematic diagram of the master mold from top view;

[0024] Figure 8 This is a schematic diagram of network distribution.

[0025] Description of main symbols:

[0026] 01. Light incident surface; 02. Light guide plate; 11. Support frame; 12. Vibration motor; 13. Upper cover; 14. Ventilation tube; 15. Feeding tube; 16. Support plate; 17. Lower cover; 18. Air pump; 19. Pressure tube; 20. Telescopic rod one; 21. Electric slide rail; 22. Inlay plate; 23. Telescopic rod two; 24. Laser instrument; 25. Reflective sleeve; 26. Filter box; 27. Support sleeve; 28. Power assembly; 29. ​​Winding roller; 30. Limiting ring; 31. Telescopic rod three; 40. Male mold; 41. Dot insert; 42. Nozzle hole; 43. Dot sheet; 44. Small hole; 45. Large hole; 50. Female mold; 51. Sub-insert; 52. Sawtooth slider insert; 53. Block insert; 54. Tail position; 55. Water inlet block insert. DETAILED DESCRIPTION

[0027] Below, the present invention is further described in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0028] Example

[0029] Please combine Figure 1-8 ,

[0030] A light guide plate for improving the brightness of LGP includes a light guide plate 02, a light incident surface 01 is provided on the side of the light guide plate 02, one side of the light guide plate 02 is a dot surface, and the other side is a light emitting surface. The light guide plate 02 is a basic reflective sheet material, the dot surface is dot-processed, and the light incident surface 01 is used for light input.

[0031] The invention comprises: a support frame 11, one side of which is rotatably connected to a support sleeve 27, one side of the support sleeve 27 is fixedly connected to a lower cover 17, and the lower cover 17 is rotatably connected to an upper cover 13, the support frame 11 provides support, the lower cover 17 and the upper cover 13 are internally sealed to ensure processing, a plurality of telescopic rods 23 are provided, one end of the telescopic rod 23 is rotatably connected to the lower cover 17, and the other end is rotatably connected to an inlay plate 22, and a female mold 50 is connected to the inlay plate 22, the telescopic rod 23 supports and moves to realize the upper and lower molds, the inlay plate 22 is positioned and clamped, and the female mold 50 cooperates with the male mold 40 for molding, an auxiliary mechanism is connected to the upper cover 13, and the bottom of the auxiliary mechanism is connected to the male mold 40, and the auxiliary mechanism performs later dot processing and auxiliary work, an air pump 18, which is connected to the support frame 11 is fixedly connected, and its output end is connected to a pressure pipe 19 connected to the lower cover 17, and the upper cover 13 is connected to the air vent 14. The air pump 18 is used to pump and cool the interior to ensure the molding work, and the air vent 14 is ventilated. The power component 28 is fixedly connected to one side of the support frame 11, and the output end of the power component 28 is transmission-connected to the winding roller 29, and the winding roller 29 is sleeved with a pull rope connected to the upper cover 13. The power component 28 is an existing mechanism, which is a combination of a motor and a gearbox, for providing power, so that the winding roller 29 can be wound or relaxed, and the support plate 16 is fixedly connected to one side of the support frame 11. One end of the support plate 16 is connected to the feeding tube 15 connected to the mother mold 50, the support plate 16 is supported, and the feeding tube 15 is fed.

[0032] The auxiliary mechanism includes: a telescopic rod 20, a fixed end of which is connected to the upper cover 13, a movable end of the telescopic rod 20 is fixedly connected to a slider, a laser instrument 24 is slidably sleeved on the outer side of the slider, and the telescopic rod 20 moves, thereby causing the laser instrument 24 to move up and down, a reflective sleeve 25, which is fixedly connected to the laser instrument 24, a follower block is fixedly connected to the reflective sleeve 25, an electric slide rail 21, which is fixedly connected to the upper cover 13, and the movable end of the electric slide rail 21 is fixedly connected to the follower block, and the bottom of the reflective sleeve 25 is slidably sleeved with a light-transmitting plate in contact with the male mold 40. The movement of the electric slide rail 21 causes the reflective sleeve 25 to move left and right, thereby changing its position, and cooperating with the light-transmitting plate to irradiate large and small holes. The laser instrument 24 and the reflective sleeve 25 are both existing mechanisms for generating lasers, and the reflective sleeve 25 reflects and transmits light.

[0033] A limiting ring 30 is fixedly connected inside the upper cover 13, and a sliding bar that cooperates with the limiting ring 30 is connected to the outside of the male mold 40. The limiting ring 30 cooperates with the sliding bar to limit the position of the male mold 40 to ensure the needs of subsequent work.

[0034] One side of the support sleeve 27 is clamped with a limiting pin that cooperates with the support frame 11. The input end of the air pump 18 is connected to the filter box 26 connected to the support frame 11. The limiting pin is clamped, and the filter box 26 filters the gas to reduce external interference.

[0035] Multiple reflective plates are arranged in the reflective sleeve 25. One side of the upper cover 13 is fixedly connected to a telescopic rod 31. One side of the telescopic rod 31 is fixedly connected to a contact block that contacts the male mold 40. The reflective plates reflect light to ensure the exposure of light. The telescopic rod 31 further limits one side of the male mold 40 to ensure its position.

[0036] A plurality of vibration motors 12 are fixedly connected to the bottom of the lower cover 17, and a matching arc that matches the lower cover 17 is connected to one side of the upper cover 13. A control valve is provided on the air vent 14. The vibration motor 12 vibrates to discharge any residual gas in the space formed by the male mold 40 and the female mold 50, and the control valve controls the air flow speed.

[0037] The male mold 40 includes: a dot insert 41, one side of which is provided with a nozzle hole 42 connected to the feeding tube 15, and a dot sheet 43, which is arranged on the dot insert 41. The dot insert 41 is expanded for easy installation. The nozzle hole 42 ensures feeding, and the dot sheet 43 ensures subsequent dot irradiation.

[0038] The mother mold 50 includes: a sprue block insert 55, one side of which is correspondingly provided with a block insert 53, an inlet insert 51 is connected between the sprue block insert 55 and the block insert 53, a serrated slider insert 52, which is arranged on both sides of the sprue block insert 55 and the block insert 53, and tail slides 54 are connected on both sides of the serrated slider insert 52. The sprue block insert 55 and the block insert 53 are packaged, the inlet insert 51 is matched with the inlay, and the tail slide 54 and the serrated slider insert 52 ensure molding.

[0039] The dot sheet 43 includes a plurality of large holes 45 and small holes 44. The diameter of the large holes 45 is twice that of the small holes 44. The large holes 45 are large dots, and the small holes 44 are small dots, to ensure subsequent molding.

[0040] The implementation principle of the embodiment of this application is:

[0041] Select the corresponding model of mold according to needs, then install the male mold 40 on the limiting ring 30, the female mold 50 on the inlay plate 22, and the feeding tube 15 on the nozzle hole 42. Close the upper cover 13, and at the same time make the telescopic rod three 31 and the telescopic rod two 23 work, move and splice, and then use the injection molding machine to perform injection molding, and then mold and cool to obtain the light guide plate 02, and then turn on the laser instrument 24 to process normal diameter laser dots in the dot sheet 43 area, and then move the electric slide rail 21 to perform secondary dot processing. After completion, use the power component 28 to rotate the winding roller 29, open the upper cover 13, and retract the telescopic rod one 20 at the same time to perform demolding to obtain the finished product.

[0042] Among them, the laser instrument 24 processes the dots on the light guide plate 02. The processing power of large dots is 45 watts to 60 watts for large holes, and the processing power of inlaid small dots is 20 watts for the telescopic rod and 30 watts for the limiting ring. The dots are all laser micro-crater dots. The front mold core of the public mold 40 is polished into a mirror surface, and the laser dots are processed with a mirror surface. The dots are processed for secondary processing and small dots are inlaid between the large dots. The dot density at the tail of the light guide plate 02 is greater than the dot density of the light source. The tail density is increased by 5%, and the actual brightness of the light guide plate 02 is improved.

[0043] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and replacements made by technicians in this field on the basis of the present invention fall within the scope of protection required by the present invention.

Claims

1. A light guide plate processing device for improving the brightness of LGP, characterized in that: include: A support frame, one side of which is rotatably connected to a support sleeve, one side of the support sleeve is fixedly connected to a lower cover, and the lower cover is rotatably connected to an upper cover; a second telescopic rod, of which a plurality is provided, wherein one end of the second telescopic rod is rotatably connected to the lower cover, and the other end is rotatably connected to the inlay plate, and the inlay plate is connected to the mother mold; An auxiliary mechanism connected to the upper cover, wherein the bottom of the auxiliary mechanism is connected to a male mold; An air pump, which is fixedly connected to the support frame, and an output end of which is connected to a pressure pipe connected to the lower cover, and an air vent pipe is connected to the upper cover; A power assembly is fixedly connected to one side of the support frame, wherein the output end of the power assembly is transmission-connected to a winding roller, and a pull rope connected to the upper cover is sleeved on the winding roller; The support plate is fixedly connected to one side of the support frame, and one end of the support plate is connected to a feeding tube connected to the female mold.

2. The light guide plate processing equipment for improving the brightness of LGP according to claim 1, characterized in that: The auxiliary mechanism includes: A telescopic rod 1, whose fixed end is connected to the upper cover, and a movable end of the telescopic rod 1 is fixedly connected to a slider, and a laser instrument is slidably sleeved on the outer side of the slider; A reflective sleeve is fixedly connected to the laser instrument, and a follower block is fixedly connected to the reflective sleeve; The electric slide rail is fixedly connected to the upper cover, the moving end of the electric slide rail is fixedly connected to the follower block, and the bottom of the reflective sleeve is slidably sleeved with a light-transmitting plate in contact with the male mold.

3. The processing equipment for a light guide plate for improving the brightness of an LGP according to claim 2, characterized in that: A limiting ring is fixedly connected inside the upper cover, and a sliding strip matched with the limiting ring is connected to the outer side of the male mold.

4. The processing equipment for a light guide plate for improving the brightness of an LGP according to claim 2, characterized in that: One side of the support sleeve is clamped with a limiting pin that matches the support frame, and the input end of the air pump is connected to a filter box connected to the support frame.

5. The processing equipment for a light guide plate for improving the brightness of an LGP according to claim 2, characterized in that: A plurality of reflective plates are arranged in the reflective sleeve, one side of the upper cover is fixedly connected to a telescopic rod three, and one side of the telescopic rod three is fixedly connected to a contact block in contact with the male mold.

6. The light guide plate processing equipment for improving the brightness of LGP according to claim 2, characterized in that: The bottom of the lower cover is fixedly connected with a plurality of vibration motors, one side of the upper cover is connected with a matching arc that matches the lower cover, and the air vent is provided with a control valve.

7. The light guide plate processing equipment for improving the brightness of LGP according to claim 2, characterized in that: The male mold comprises: The mesh dot insert has a nozzle hole connected to the feeding pipe on one side; The dot sheet is arranged on the dot inlay.

8. The light guide plate processing equipment for improving the brightness of LGP according to claim 7, characterized in that: The master mold comprises: A nozzle block insert, one side of which is correspondingly provided with a block insert, and an inlet insert is connected between the nozzle block insert and the block insert; The serrated slider insert is arranged on both sides of the nozzle block insert and the block insert, and the two sides of the serrated slider insert are connected with tail slides.

9. The light guide plate processing equipment for improving the brightness of LGP according to claim 7, characterized in that: The dot sheet includes a plurality of large holes and small holes, and the diameter of the large holes is times that of the small holes.

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