CN109188595B - Light guide plate end face machining method - Google Patents
Light guide plate end face machining method Download PDFInfo
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- CN109188595B CN109188595B CN201811011154.5A CN201811011154A CN109188595B CN 109188595 B CN109188595 B CN 109188595B CN 201811011154 A CN201811011154 A CN 201811011154A CN 109188595 B CN109188595 B CN 109188595B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0016—Grooves, prisms, gratings, scattering particles or rough surfaces
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0065—Manufacturing aspects; Material aspects
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Abstract
The invention discloses a method for processing the end face of a light guide plate, which comprises the following steps; step one, manufacturing mesh points: processing mesh points on the lower surface of the light guide plate substrate to form a primary light guide plate; step two, brushing an ink layer: cleaning and drying the primary light guide plate; then uniformly coating the ink glue on the light incident end face on one side of the primary light guide plate; uniformly distributing optical adhesives on the upper surface of the primary light guide plate by adopting a blade coating or screen printing mode, and curing the ink layer by heating or UV ultraviolet irradiation to form an ink coating; step three, hot-pressing mesh pretreatment: and placing the primary light guide plate on the light guide plate end face processing mechanism, and carrying out hot pressing on the surface of the ink coating on the light incident surface of the primary light guide plate through the light guide plate end face processing mechanism to form end face mesh points so as to finish the processing of the light guide plate. The invention has the characteristics of uniform light emitting, more uniform light incidence on the light incidence end surface of the light guide plate, small light incidence loss, high brightness, high processing speed and high processing yield.
Description
Technical Field
The invention relates to a method for processing an end face of a light guide plate, in particular to a method for processing an end face of a light guide plate, which has the advantages of uniform light emission, more uniform light incidence on an incidence end face of the light guide plate, small light incidence loss, high brightness, high processing speed and high processing yield.
Background
In recent years, in the display industry, backlight units (BLU) are classified into direct type and side type. The proportion of the side-in backlight module is getting larger and larger. The side entry type product is more ultrathin in appearance and has larger and larger occupation ratio. The lower surface of the side-in light guide plate is usually provided with molded dots to reflect light, so that the light can be uniformly irradiated on the optical film.
The operating principle of the light guide plate is that the optical-grade acrylic plate is used for absorbing the light emitted from the LED lamp to stay on the surface of the acrylic plate, when the light irradiates each mesh point, the reflected light can be diffused towards each angle, then the reflected light is damaged and is emitted from the front surface of the light guide plate, and the light guide plate can uniformly emit light through various light guide points with different densities and sizes.
The light guide plate takes optical acrylic (PMMA)/PC as a base material, light enters the light guide plate from an incident surface of the light guide plate, and is scattered at the mesh points of the light guide plate, so that the light is uniformly distributed. The microstructure design of the incident surface of the light guide plate, i.e. the end surface of the light guide plate, can improve the optical performance of the light guide plate.
In implementing the conventional technique, the inventors found that the following technical problems exist:
currently, only injection molding methods are available in the industry to prepare light guide plates with end-face microstructures. Due to the ultra-thin size requirement of the light guide plate, the injection molding production efficiency is low, and the production cost is high because a professional injection molding machine and a precise mold are required to be configured, so that a technical scheme with high production efficiency and low cost is required to be provided.
Disclosure of Invention
The invention aims to provide the method for processing the end face of the light guide plate, which has the advantages of uniform light emitting, more uniform light incidence on the light incidence end face of the light guide plate, small light incidence loss, high brightness, high processing speed and high processing yield.
The purpose of the invention can be realized by the following technical scheme:
a method for processing the end face of a light guide plate comprises the following steps;
step one, manufacturing mesh points: processing mesh points on the lower surface of the light guide plate substrate to form a primary light guide plate; the method for processing the mesh points is one of a laser mesh point processing method, a printing mesh point processing method or a photoetching mesh point processing method;
step two, brushing an ink layer: cleaning the primary light guide plate with ethanol, acetone and deionized water in sequence, and drying; then uniformly coating the ink glue on the light incident end face on one side of the primary light guide plate; uniformly distributing optical adhesives on the upper surface of the primary light guide plate by adopting a blade coating or screen printing mode, and curing the ink layer by heating or UV ultraviolet irradiation to form an ink coating;
step three, hot-pressing mesh pretreatment: placing the primary light guide plate on a light guide plate end face processing mechanism, and carrying out hot pressing on the surface of the ink coating on the light incident surface of the primary light guide plate through the light guide plate end face processing mechanism to form end face mesh points so as to finish the processing of the light guide plate;
the light guide plate is made of one of polymethyl methacrylate (PMMA), Polycarbonate (PC), methyl methacrylate-styrene copolymer (MS) and glass;
the thickness of the ink coating is 0.01-0.1mm, and the optical adhesive is one of OCA, OCR and SCA;
the light guide plate processed by the method comprises a substrate, dots, an ink coating and end face dots, wherein the dots are arranged on the lower surface of the substrate, the ink coating is arranged on the end face of one side of the substrate, and the end face dots are arranged on the outer side face of the ink coating;
the end face processing mechanism of the light guide plate comprises a base, a first baffle, a second baffle, a fixed rail, a first clapboard, a second clapboard, a clamping plate, a lifting plate, a movable plate and a sliding hot-pressing roller;
a first baffle and a second baffle which are vertical to the base are respectively arranged at the two side ends of the upper surface of the base; the upper surface of the base is provided with fixed rails, and the two fixed rails are parallel to each other and are parallel to the other two sides of the base; the fixed track is provided with a first partition plate, a second partition plate, a clamping plate and a lifting plate; the clamping plate and the lifting plate are positioned between the first partition plate and the second partition plate; a movable plate is arranged at the top end of the lifting plate; the top end of the movable plate is provided with a sliding hot-pressing roller;
a spring is arranged in a fixed track between the clamping plate and the lifting plate;
the lower surface of the movable plate is provided with a groove, the groove is matched with the lifting plate, and the movable plate is arranged on the lifting plate through the groove; a clamping groove is formed in one side of the lifting plate; a clamping protrusion is arranged on the movable plate on one side of the groove and matched with the clamping groove;
a T-shaped sliding rail is arranged at the top of the movable plate, and a sliding hot pressing roller is mounted on the T-shaped sliding rail;
a counterweight block is arranged on one side of the sliding hot-pressing roller, a rotating shaft is arranged on the other side of the sliding hot-pressing roller, and the hot-pressing roller is arranged on the rotating shaft;
the hot pressing roller comprises a roller body, hot pressing roller mounting holes and hot pressing mesh point grooves, wherein the hot pressing roller mounting holes are formed in the roller body and are matched with a rotating shaft arranged on one side of the sliding hot pressing roller; the depth of the hot press roller mounting hole is longer than that of the rotating shaft, and a heating resistance wire is mounted on the inner wall of the hot press roller mounting hole which is not covered by the rotating shaft; the outer side surface of the roller body is provided with a hot-pressing mesh point groove; the hot-pressing mesh point grooves are matched with the end face mesh points;
the operation method of the light guide plate end face machining mechanism comprises the following steps of:
step S1, adjusting the positions of the first partition board, the second partition board and the clamping board and the height of the movable board; so that a primary light guide plate with an ink coating is accommodated on the base between the first baffle and the first partition plate, a processed light guide plate is accommodated on the base between the second baffle and the second partition plate, and the height from the bottom side of the sliding hot-pressing roller to the upper surface of the base is the same as the height of the processed end surface of the light guide plate; starting a heating resistance wire arranged in the sliding hot-pressing roller to enable the surface temperature of the sliding hot-pressing roller to reach the melting temperature of the ink coating;
step S2, pulling the clamping plate open, taking out the primary light guide plate with the ink coating from the base between the first baffle and the first partition plate, loosening the clamping plate to enable the clamping plate to clamp the primary light guide plate, wherein the primary light guide plate is vertical to the base;
step S3, sliding the sliding hot press roller along the T-shaped slide rail to the outer side of one end of the top of the primary light guide plate, and then sliding the sliding hot press roller along the T-shaped slide rail at a constant speed, so that the hot press roller on the sliding hot press roller is pressed from the surface of the ink coating at the top of the primary light guide plate at a constant speed, and end surface mesh points matched with the hot press mesh point grooves on the sliding hot press roller are formed on the surface of the ink coating; removing the sliding hot-pressing roller from the top end of the light guide plate;
and step S4, pulling the clamping plate open, taking out the base of the light guide plate placed between the second baffle and the second partition plate, and finishing the processing of the light guide plate.
The method for processing the end face of the light guide plate has the characteristics of uniform light emission, more uniform light incidence on the light incidence end face of the light guide plate, small light incidence loss, high brightness, high processing speed and high processing yield.
The invention has the beneficial effects that:
the invention processes the light guide plate with end surface mesh points through mesh point making, ink layer coating and hot pressing mesh point pretreatment, so that the incident light of the light guide plate is more uniform at the light incident end surface, and the light incident loss is small;
the processed light guide plate comprises a substrate, screen dots, an ink coating and end face screen dots, wherein the screen dots are arranged on the lower surface of the substrate, the ink coating is arranged on the end face of one side of the substrate, and the end face screen dots are arranged on the outer side face of the ink coating;
the invention designs a light guide plate end face machining mechanism which comprises a base, a first baffle, a second baffle, a fixed rail, a first partition, a second partition, a clamping plate, a lifting plate, a movable plate and a sliding hot-pressing roller, wherein the first baffle is arranged on the base; a first baffle and a second baffle which are vertical to the base are respectively arranged at the two side ends of the upper surface of the base; the upper surface of the base is provided with fixed rails, and the two fixed rails are parallel to each other and are parallel to the other two sides of the base; the fixed track is provided with a first partition plate, a second partition plate, a clamping plate and a lifting plate; the clamping plate and the lifting plate are positioned between the first partition plate and the second partition plate; the top end of the lifting plate is provided with a movable plate, and the height of the movable plate can be adjusted along the direction of the lifting plate; the top end of the movable plate is provided with a sliding hot-pressing roller;
a spring is arranged in the fixed track between the clamping plate and the lifting plate and can pull the clamping plate to the lifting plate;
the lower surface of the movable plate is provided with a groove, and the movable plate is arranged on the lifting plate through the groove; a clamping groove is formed in one side of the lifting plate; the movable plate on one side of the groove is provided with clamping protrusions which are clamped on different grooves through adjusting the clamping protrusions, and the height of the movable plate is adjusted to adapt to light guide plates with different sizes;
a counterweight block is arranged on one side of the sliding hot-pressing roller, a rotating shaft is arranged on the other side of the sliding hot-pressing roller, and the hot-pressing roller is arranged on the rotating shaft; the hot pressing roller can rotate around the rotating shaft;
the hot press roller mounting hole is deeper than the rotating shaft, the inner wall of the hot press roller mounting hole uncovered by the rotating shaft is provided with the heating resistance wire, and the heating resistance wire heats the sliding hot press roller, so that the sliding hot press roller softens the ink coating contacted with the sliding hot press roller, the processing speed is high, and the processing yield is high.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of a light guide plate manufactured by the method for processing an end face of a light guide plate according to the present invention;
FIG. 2 is a schematic structural diagram of a light guide plate end-face processing mechanism according to a light guide plate end-face processing method of the present invention;
FIG. 3 is a side view of a light guide plate end-face processing mechanism according to the light guide plate end-face processing method of the present invention;
FIG. 4 is a top view of a light guide plate end-face machining mechanism according to the light guide plate end-face machining method of the present invention;
fig. 5 is a schematic structural view of a hot press roller of a light guide plate end surface processing mechanism according to a light guide plate end surface processing method of the present invention.
Detailed Description
The purpose of the invention can be realized by the following technical scheme:
a method for processing the end face of a light guide plate comprises the following steps;
step one, manufacturing mesh points: processing mesh points on the lower surface of the light guide plate substrate to form a primary light guide plate; the method for processing the mesh points is one of a laser mesh point processing method, a printing mesh point processing method or a photoetching mesh point processing method;
step two, brushing an ink layer: cleaning the primary light guide plate with ethanol, acetone and deionized water in sequence, and drying; then uniformly coating the ink glue on the light incident end face on one side of the primary light guide plate; uniformly distributing optical adhesives on the upper surface of the primary light guide plate by adopting a blade coating or screen printing mode, and curing the ink layer by heating or UV ultraviolet irradiation to form an ink coating;
step three, hot-pressing mesh pretreatment: placing the primary light guide plate on a light guide plate end face processing mechanism, and carrying out hot pressing on the surface of the ink coating on the light incident surface of the primary light guide plate through the light guide plate end face processing mechanism to form end face mesh points so as to finish the processing of the light guide plate;
the light guide plate is made of one of polymethyl methacrylate (PMMA), Polycarbonate (PC), methyl methacrylate-styrene copolymer (MS) and glass;
the thickness of the ink coating is 0.01-0.1mm, the optical adhesive is one of OCA, OCR and SCA, wherein the OCA is solid transparent optical adhesive; OCR is ultraviolet hardening resin, SCA is hot melt optical cement;
as shown in fig. 1, the light guide plate processed by the method includes a substrate 11, dots 12, an ink coating 13, and end face dots 131, the dots 12 are disposed on the lower surface of the substrate 11, the ink coating 13 is disposed on the end face of one side of the substrate 11, and the end face dots 131 are disposed on the outer side face of the ink coating 13;
as shown in fig. 2-5, the light guide plate end face processing mechanism includes a base 1, a first baffle 2, a second baffle 3, a fixed rail 4, a first partition plate 5, a second partition plate 6, a clamping plate 7, a lifting plate 8, a movable plate 9, and a sliding hot-pressing roller 10;
a first baffle 2 and a second baffle 3 which are vertical to the base 1 are respectively arranged at two side ends of the upper surface of the base 1; the upper surface of the base 1 is provided with fixed rails 4, and the two fixed rails 4 are parallel to each other and are parallel to the other two sides of the base 1; the fixed track 4 is provided with a first clapboard 5, a second clapboard 6, a clamping plate 7 and a lifting plate 8; the clamping plate 7 and the lifting plate 8 are positioned between the first clapboard 5 and the second clapboard 6; a movable plate 9 is arranged at the top end of the lifting plate 8, and the height of the movable plate 9 can be adjusted along the direction of the lifting plate 8; the top end of the movable plate 9 is provided with a sliding hot-pressing roller 10;
a spring is arranged in the fixed track 4 between the clamping plate 7 and the lifting plate 8, and the spring can pull the clamping plate 7 to the lifting plate 8;
the lower surface of the movable plate 9 is provided with a groove, the groove is matched with the lifting plate 8, and the movable plate 9 is arranged on the lifting plate 8 through the groove; a clamping groove is formed in one side of the lifting plate 8; the movable plate 9 on one side of the groove is provided with a clamping protrusion, the clamping protrusion is matched with the clamping groove, the movable plate 9 is clamped on different grooves through adjusting the clamping protrusion, and the height of the movable plate 9 is adjusted to adapt to light guide plates with different sizes;
a T-shaped slide rail 91 is arranged at the top of the movable plate 9, and a sliding hot-pressing roller 10 is mounted on the T-shaped slide rail 91;
a counterweight 101 is arranged on one side of the sliding hot-pressing roller 10, a rotating shaft is arranged on the other side of the sliding hot-pressing roller 10, and a hot-pressing roller 102 is arranged on the rotating shaft; the hot press roll 102 can rotate around a rotating shaft;
the hot pressing roller 102 comprises a roller body 1021, hot pressing roller mounting holes 1022 and hot pressing mesh point grooves 1023, wherein the hot pressing roller mounting holes 1022 are formed in the roller body 1021, and the hot pressing roller mounting holes 1022 are matched with a rotating shaft arranged on one side of the sliding hot pressing roller 10; the depth of the hot press roller mounting hole 1022 is longer than that of the rotating shaft, a heating resistance wire is mounted on the inner wall of the hot press roller mounting hole 1022 uncovered by the rotating shaft, and the heating resistance wire heats the sliding hot press roller 10 to enable the sliding hot press roller 10 to soften the ink coating 13 contacted with the sliding hot press roller 10; the outer side surface of the roller body 1021 is provided with a hot-pressing mesh point groove 1023; the hot-pressing mesh point grooves 1023 are matched with the end face mesh points 131;
the operation method of the light guide plate end face machining mechanism comprises the following steps of:
step S1, adjusting the positions of the first partition board 5, the second partition board 6 and the clamping board 7, and the height of the movable board 9; so that the base 1 between the first baffle 2 and the first partition 5 contains a primary light guide plate with an ink coating, the base 1 between the second baffle 3 and the second partition 6 contains a processed light guide plate, and the height from the bottom side of the sliding hot-pressing roller 10 to the upper surface of the base 1 is the same as the height of the processed end surface of the light guide plate; starting a heating resistance wire arranged in the sliding hot-press roller 10 to enable the surface temperature of the sliding hot-press roller 10 to reach the melting temperature of the ink coating 13;
step S2, pulling the clamping plate 7 open, taking out the primary light guide plate with the ink coating from the base 1 between the first baffle 2 and the first partition plate 5, loosening the clamping plate 7 to enable the clamping plate 7 to clamp the primary light guide plate, wherein the primary light guide plate is vertical to the base 1;
step S3, sliding the sliding hot press roller 10 along the T-shaped slide rail 91 to the outside of one end of the primary light guide plate, and then sliding the sliding hot press roller 10 along the T-shaped slide rail 91 at a constant speed, so that the hot press roller 102 on the sliding hot press roller 10 is pressed from the surface of the ink coating 13 on the top of the primary light guide plate at a constant speed, and the surface of the ink coating 13 forms end surface dots 131 matching with the hot press dot recesses 1023 on the sliding hot press roller 10; removing the sliding heat and pressure roller 10 from the top of the light guide plate;
step S4, pulling the clamping plate 7 open, and taking out the base 1 with the light guide plate placed between the second baffle 3 and the second partition 6, thereby completing the processing of the light guide plate.
The working principle of the invention is as follows:
the invention processes the light guide plate with end surface mesh points through mesh point making, ink layer coating and hot pressing mesh point pretreatment, so that the incident light of the light guide plate is more uniform at the light incident end surface, and the light incident loss is small;
the light guide plate processed by the invention comprises a substrate 11, mesh points 12, an ink coating 13 and end face mesh points 131, wherein the mesh points 12 are arranged on the lower surface of the substrate 11, the ink coating 13 is arranged on the end face of one side of the substrate 11, and the end face mesh points 131 are arranged on the outer side face of the ink coating 13;
the invention designs a light guide plate end face processing mechanism which comprises a base 1, a first baffle 2, a second baffle 3, a fixed rail 4, a first partition plate 5, a second partition plate 6, a clamping plate 7, a lifting plate 8, a movable plate 9 and a sliding hot-pressing roller 10; a first baffle 2 and a second baffle 3 which are vertical to the base 1 are respectively arranged at two side ends of the upper surface of the base 1; the upper surface of the base 1 is provided with fixed rails 4, and the two fixed rails 4 are parallel to each other and are parallel to the other two sides of the base 1; the fixed track 4 is provided with a first clapboard 5, a second clapboard 6, a clamping plate 7 and a lifting plate 8; the clamping plate 7 and the lifting plate 8 are positioned between the first clapboard 5 and the second clapboard 6; a movable plate 9 is arranged at the top end of the lifting plate 8, and the height of the movable plate 9 can be adjusted along the direction of the lifting plate 8; the top end of the movable plate 9 is provided with a sliding hot-pressing roller 10;
a spring is arranged in the fixed track 4 between the clamping plate 7 and the lifting plate 8, and the spring can pull the clamping plate 7 to the lifting plate 8;
the lower surface of the movable plate 9 is provided with a groove, and the movable plate 9 is arranged on the lifting plate 8 through the groove; a clamping groove is formed in one side of the lifting plate 8; the movable plate 9 on one side of the groove is provided with a clamping protrusion, the clamping protrusion is clamped on different grooves through adjustment, and the height of the movable plate 9 is adjusted to adapt to light guide plates with different sizes;
a counterweight 101 is arranged on one side of the sliding hot-pressing roller 10, a rotating shaft is arranged on the other side of the sliding hot-pressing roller 10, and a hot-pressing roller 102 is arranged on the rotating shaft; the hot press roll 102 can rotate around a rotating shaft;
the hot press roller mounting holes 1022 are longer than the rotating shaft in depth, the inner walls of the hot press roller mounting holes 1022 not covered by the rotating shaft are provided with heating resistance wires, and the heating resistance wires heat the sliding hot press roller 10 to enable the sliding hot press roller 10 to soften the ink coating 13 contacted with the sliding hot press roller 10, so that the processing speed is high, and the processing yield is high.
The method for processing the end face of the light guide plate has the characteristics of uniform light emission, more uniform light incidence on the light incidence end face of the light guide plate, small light incidence loss, high brightness, high processing speed and high processing yield.
The invention has the beneficial effects that:
the invention processes the light guide plate with end surface mesh points through mesh point making, ink layer coating and hot pressing mesh point pretreatment, so that the incident light of the light guide plate is more uniform at the light incident end surface, and the light incident loss is small;
the processed light guide plate comprises a substrate, screen dots, an ink coating and end face screen dots, wherein the screen dots are arranged on the lower surface of the substrate, the ink coating is arranged on the end face of one side of the substrate, and the end face screen dots are arranged on the outer side face of the ink coating;
the invention designs a light guide plate end face machining mechanism which comprises a base, a first baffle, a second baffle, a fixed rail, a first partition, a second partition, a clamping plate, a lifting plate, a movable plate and a sliding hot-pressing roller, wherein the first baffle is arranged on the base; a first baffle and a second baffle which are vertical to the base are respectively arranged at the two side ends of the upper surface of the base; the upper surface of the base is provided with fixed rails, and the two fixed rails are parallel to each other and are parallel to the other two sides of the base; the fixed track is provided with a first partition plate, a second partition plate, a clamping plate and a lifting plate; the clamping plate and the lifting plate are positioned between the first partition plate and the second partition plate; the top end of the lifting plate is provided with a movable plate, and the height of the movable plate can be adjusted along the direction of the lifting plate; the top end of the movable plate is provided with a sliding hot-pressing roller;
a spring is arranged in the fixed track between the clamping plate and the lifting plate and can pull the clamping plate to the lifting plate;
the lower surface of the movable plate is provided with a groove, and the movable plate is arranged on the lifting plate through the groove; a clamping groove is formed in one side of the lifting plate; the movable plate on one side of the groove is provided with clamping protrusions which are clamped on different grooves through adjusting the clamping protrusions, and the height of the movable plate is adjusted to adapt to light guide plates with different sizes;
a counterweight block is arranged on one side of the sliding hot-pressing roller, a rotating shaft is arranged on the other side of the sliding hot-pressing roller, and the hot-pressing roller is arranged on the rotating shaft; the hot pressing roller can rotate around the rotating shaft;
the hot press roller mounting hole is deeper than the rotating shaft, the inner wall of the hot press roller mounting hole uncovered by the rotating shaft is provided with the heating resistance wire, and the heating resistance wire heats the sliding hot press roller, so that the sliding hot press roller softens the ink coating contacted with the sliding hot press roller, the processing speed is high, and the processing yield is high.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (2)
1. A light guide plate end face processing method is characterized by comprising the following steps;
step one, manufacturing mesh points: processing mesh points on the lower surface of the light guide plate substrate to form a primary light guide plate; the method for processing the mesh points is one of a laser mesh point processing method, a printing mesh point processing method or a photoetching mesh point processing method;
step two, brushing an ink layer: cleaning the primary light guide plate with ethanol, acetone and deionized water in sequence, and drying; then uniformly coating the ink glue on the light incident end face on one side of the primary light guide plate; curing the ink layer by heating or UV ultraviolet irradiation to form an ink coating;
step three, hot-pressing mesh pretreatment: placing the primary light guide plate on a light guide plate end face processing mechanism, and carrying out hot pressing on the surface of the ink coating on the light incident surface of the primary light guide plate through the light guide plate end face processing mechanism to form end face mesh points so as to finish the processing of the light guide plate;
the light guide plate is made of one of polymethyl methacrylate (PMMA), Polycarbonate (PC), methyl methacrylate-styrene copolymer (MS) and glass;
the thickness of the ink coating is 0.01-0.1 mm;
the light guide plate processed by the method comprises a substrate (11), screen dots (12), an ink coating (13) and end face screen dots (131), wherein the screen dots (12) are arranged on the lower surface of the substrate (11), the ink coating (13) is arranged on the end face of one side of the substrate (11), and the end face screen dots (131) are arranged on the outer side face of the ink coating (13);
the end face processing mechanism of the light guide plate comprises a base (1), a first baffle (2), a second baffle (3), a fixed rail (4), a first partition plate (5), a second partition plate (6), a clamping plate (7), a lifting plate (8), a movable plate (9) and a sliding hot-pressing roller (10);
a first baffle (2) and a second baffle (3) which are vertical to the base (1) are respectively arranged at two side ends of the upper surface of the base (1); the upper surface of the base (1) is provided with fixed rails (4), and the two fixed rails (4) are parallel to each other and are parallel to the other two sides of the base (1); a first partition plate (5), a second partition plate (6), a clamping plate (7) and a lifting plate (8) are arranged on the fixed track (4); the clamping plate (7) and the lifting plate (8) are positioned between the first clapboard (5) and the second clapboard (6); a movable plate (9) is arranged at the top end of the lifting plate (8); the top end of the movable plate (9) is provided with a sliding hot-pressing roller (10);
a spring is arranged in the fixed track (4) between the clamping plate (7) and the lifting plate (8);
the lower surface of the movable plate (9) is provided with a groove, the groove is matched with the lifting plate (8), and the movable plate (9) is arranged on the lifting plate (8) through the groove; a clamping groove is formed in one side of the lifting plate (8); a clamping protrusion is arranged on the movable plate (9) on one side of the groove and matched with the clamping groove;
a T-shaped sliding rail (91) is arranged at the top of the movable plate (9), and a sliding hot-pressing roller (10) is mounted on the T-shaped sliding rail (91);
a balancing weight (101) is arranged on one side of the sliding hot-pressing roller (10), a rotating shaft is arranged on the other side of the sliding hot-pressing roller (10), and a hot-pressing roller (102) is mounted on the rotating shaft;
the hot pressing roller (102) comprises a roller body (1021), hot pressing roller mounting holes (1022) and hot pressing mesh point grooves (1023), wherein the hot pressing roller mounting holes (1022) are formed in the roller body (1021), and the hot pressing roller mounting holes (1022) are matched with a rotating shaft arranged on one side of the sliding hot pressing roller (10); the depth of the hot press roller mounting hole (1022) is longer than that of the rotating shaft, and a heating resistance wire is mounted on the inner wall of the hot press roller mounting hole (1022) which is not covered by the rotating shaft; the outer side surface of the roller body (1021) is provided with a hot-pressing mesh point groove (1023); the hot-pressing mesh point groove (1023) is matched with the end face mesh point (131).
2. A method for processing an end face of a light guide plate according to claim 1, wherein the method for operating the light guide plate end face processing mechanism comprises the steps of:
step S1, adjusting the positions of the first partition board (5), the second partition board (6) and the clamping board (7) and the height of the movable board (9); so that a primary light guide plate with an ink coating is accommodated on the base (1) between the first baffle (2) and the first partition plate (5), a processed light guide plate is accommodated on the base (1) between the second baffle (3) and the second partition plate (6), and the height from the bottom side of the sliding hot-pressing roller (10) to the upper surface of the base (1) is the same as the height of the processed end surface of the light guide plate; starting a heating resistance wire arranged in the sliding hot-pressing roller (10) to enable the surface temperature of the sliding hot-pressing roller (10) to reach the melting temperature of the ink coating (13);
step S2, pulling the clamping plate (7) open, taking out the primary light guide plate with the ink coating from the base (1) between the first baffle (2) and the first partition plate (5), loosening the clamping plate (7) to enable the clamping plate (7) to clamp the primary light guide plate, wherein the primary light guide plate is vertical to the base (1);
step S3, sliding the sliding hot-press roller (10) to the outer side of one end of the top of the primary light guide plate along a T-shaped slide rail (91), and then sliding the sliding hot-press roller (10) along the T-shaped slide rail (91) at a constant speed to enable the hot-press roller (102) on the sliding hot-press roller (10) to pass through the surface of the ink coating (13) at the top of the primary light guide plate at a constant speed, so that end surface mesh points (131) matched with the hot-press mesh point grooves (1023) on the sliding hot-press roller (10) are formed on the surface of the; removing the sliding hot-pressing roller (10) from the top end of the light guide plate;
and step S4, pulling the clamping plate (7) open, taking out the base (1) with the light guide plate placed between the second baffle (3) and the second partition plate (6), and finishing the processing of the light guide plate.
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| CN201811011154.5A CN109188595B (en) | 2018-08-31 | 2018-08-31 | Light guide plate end face machining method |
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| CN201811011154.5A CN109188595B (en) | 2018-08-31 | 2018-08-31 | Light guide plate end face machining method |
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| CN109188595B true CN109188595B (en) | 2020-04-14 |
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Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014209465A (en) * | 2013-03-27 | 2014-11-06 | 三京化成工業株式会社 | Surface light source and manufacturing method thereof |
| CN104626530A (en) * | 2015-01-15 | 2015-05-20 | 苏州宙迪光电科技有限公司 | Processing technology of light guide plate |
| CN204431722U (en) * | 2015-02-09 | 2015-07-01 | 苏州宙迪光电科技有限公司 | A kind of hot-press arrangement for small-sized light conducting plate |
| CN204719259U (en) * | 2015-05-26 | 2015-10-21 | 合肥京东方显示光源有限公司 | A kind of guiding device, backlight module and display device |
| CN204925440U (en) * | 2015-08-07 | 2015-12-30 | 东莞轩朗实业有限公司 | Light guide plate and apparatus for producing thereof |
| CN205067783U (en) * | 2015-09-09 | 2016-03-02 | 深圳市天诺通光电科技有限公司 | Backlight LED module of light guide plate and this light guide plate |
| CN107783221A (en) * | 2016-08-29 | 2018-03-09 | 京东方科技集团股份有限公司 | Display module |
| CN107167870B (en) * | 2017-07-03 | 2020-12-01 | 苏州维旺科技有限公司 | Light guide plate manufacturing device and method |
| CN108020884A (en) * | 2018-01-18 | 2018-05-11 | 合肥泰沃达智能装备有限公司 | A kind of novel glass light guide plate and preparation method thereof |
| CN108445577A (en) * | 2018-03-15 | 2018-08-24 | 合肥泰沃达智能装备有限公司 | A kind of uniform light extraction light guide plate and preparation method thereof |
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