CN110244399B - Manufacturing process of optical microstructure on wedge-shaped surface of mold core of movable mold of light guide plate - Google Patents
Manufacturing process of optical microstructure on wedge-shaped surface of mold core of movable mold of light guide plate Download PDFInfo
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- CN110244399B CN110244399B CN201910475290.8A CN201910475290A CN110244399B CN 110244399 B CN110244399 B CN 110244399B CN 201910475290 A CN201910475290 A CN 201910475290A CN 110244399 B CN110244399 B CN 110244399B
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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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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention provides a process for manufacturing an optical microstructure on a wedge-shaped surface of a mold core of a movable mold of a light guide plate, which is characterized by comprising the following steps of: adjusting a screw rod on the sucker clamp to enable a wedge-shaped surface on a movable die core to be horizontal to the workbench 2 and to be in an orthogonal state with a cutter; carrying out first processing on a wedge-shaped surface on a movable mould core to enable the surface of the wedge-shaped surface to be infinitely close to a plane; according to the design requirement, the workbench moves in sequence according to XY axes, and a CNC machining center is matched to enable the machining cutter to move in the Z axis direction so as to machine the optical microstructure.
Description
Technical Field
The invention relates to a manufacturing process of an optical microstructure, in particular to a manufacturing process of an optical microstructure on a wedge-shaped surface of a mold core of a movable mold of a light guide plate.
Background
Various optical problems such as glowworm, bright and dark block, and overall high-demand chromatic aberration in the vicinity of the light incident side of the light guide plate are consistent with the trouble of the stability and yield of the light guide plate product.
The factors influencing the overall luminous effect of the light guide plate body are many, and the light source matched with the light guide plate provides a light source for the light guide plate on the one hand, and on the other hand, the light source can directly bring the firefly phenomenon and the bright and dark block phenomenon to the light guide plate, so that the overall luminous effect of the light guide plate body is directly influenced.
Disclosure of Invention
Based on the defects of the prior art, the invention aims to provide a process for manufacturing an optical microstructure on a wedge surface of a mold core of a movable mold of a light guide plate, wherein the optical microstructure on the wedge surface of the mold core of the movable mold of the light guide plate is manufactured by the process, because the wedge surface of the light guide plate is intersected with a light incident surface of the light guide plate, the light incident surface of the light guide plate is orthogonal to the light emergent surface of the light guide plate, incident light is scattered into a wedge body of the light guide plate through sawteeth of the light incident surface on a light guide plate body, part of light is transmitted through optical reflection points of the light emergent surface, then is reflected back into the wedge body of the light guide plate through a reflector plate in a backlight source and then is refracted out continuously through the optical microstructure on the wedge surface of the light guide plate, and, The whole high-requirement chromatic aberration phenomenon, and the other part of light continuously enters the light guide plate body forwards in a refraction and reflection mode, so that the light guide plate body integrally generates a light-emitting effect.
In order to achieve the above object, the present invention provides 1 a process for manufacturing an optical microstructure on a wedge-shaped surface of a mold core of a movable mold of a light guide plate, comprising the following steps:
(1) and manufacturing a movable mold core, and manufacturing a wedge-shaped surface on the movable mold core.
(2) And plating a nickel layer on the molding surface of the movable mold core, and plating a nickel layer on the wedge-shaped surface.
(3) And treating the non-molding surface of the wedge-shaped surface plated with the nickel layer to meet the design size requirement.
(4) Preparing a precise CNC and auxiliary tools required for producing the optical microstructure on the wedge surface on the mold core of the movable mold:
a. preparing a specially-modified precise CNC (computer numerical control), wherein the precision can reach the micron level, and installing a specially-made cutter seat and a processing cutter in the Z-axis direction of the CNC, wherein the cutter seat and the processing cutter can move up and down along the Z-axis direction.
b. And adjusting the tool base and the machining tool to be in a working state, and enabling the tool point of the machining tool to be perpendicular to the working table surface 2 of the CNC, and enabling the tool base and the machining tool to move along with the Z axis of the precision CNC during machining according to requirements.
c. CNC's table surface 2 positive centers places a sucking disc anchor clamps, sucking disc anchor clamps length width size ratio it is big to remove mould core length width size, rectifies sucking disc anchor clamps's working plane is perpendicular with the Z axle, controls sucking disc anchor clamps's working plane's plane degree is below 2 mu m.
(5) And placing the movable mould core on a sucker clamp, wherein the length direction of the movable mould core is placed along the Y direction, and the length and the width of the movable mould core are corrected to be parallel to the XY axes of the workbench.
(6) The forming surface 1.1 of the nickel layer of the movable mould core is processed for the first time, a used cutter is a diamond cutter with Ra, the range of Ra is 10-40mm, and a processing program is compiled to enable the surface of the movable mould core to be infinitely close to a plane.
(7) And the wedge-shaped surface on the movable die core is horizontal to the workbench 2 and is in an orthogonal state with the cutter by adjusting an adjusting screw rod on the sucker clamp.
(8) The wedge-shaped surface on the movable mould core is machined for the first time, a used cutter is a Ra diamond cutter, the range of Ra is 10-40mm, and a machining program is compiled to enable the surface of the wedge-shaped surface to be infinitely close to a plane.
(9) According to design requirements, the workbench moves in the XY axis sequence, and a CNC machining center is matched to enable the machining cutter to move in the Z axis direction, so that the optical microstructure is machined.
(10) And after the processing is finished according to the set processing parameters, cleaning the optical microstructure on the nickel layer working surface on the wedge surface.
As an improvement of the manufacturing process of the optical microstructure on the wedge-shaped surface of the light guide plate moving die core, the thickness of the nickel layer in the manufacturing process of the optical microstructure on the wedge-shaped surface of the light guide plate moving die core is 0.05mm-0.6 mm.
As an improvement of the manufacturing process of the optical microstructure on the wedge-shaped surface of the light guide plate moving die core, the manufacturing process of the optical microstructure on the wedge-shaped surface of the light guide plate moving die core is characterized in that a profiling diamond cutter is used for planing and milling the nickel layer on the wedge-shaped surface of the moving die core.
As an improvement of the manufacturing process of the optical microstructure on the wedge-shaped surface of the light guide plate moving die core, the manufacturing process of the optical microstructure on the wedge-shaped surface of the light guide plate moving die core is characterized in that a profiling diamond cutter is used for planing and milling the nickel layer on the wedge-shaped surface of the moving die core.
As an improvement of the manufacturing process of the optical microstructure on the wedge-shaped surface of the light guide plate moving die core, the working surface of the profiling diamond cutter in the manufacturing process of the optical microstructure on the wedge-shaped surface of the light guide plate moving die core is perpendicular to the optical microstructure of the nickel layer on the wedge-shaped surface of the moving die core.
As an improvement of the manufacturing process of the optical microstructure on the wedge-shaped surface of the light guide plate moving die core, the wedge-shaped surface in the manufacturing process of the optical microstructure on the wedge-shaped surface of the light guide plate moving die core is an ascending wedge-shaped surface or a descending wedge-shaped surface.
As an improvement of the manufacturing process of the optical microstructure on the wedge-shaped surface of the light guide plate moving die core, the Ra range in the manufacturing process of the optical microstructure on the wedge-shaped surface of the light guide plate moving die core is 18.50mm, and the thickness of the nickel layer is 0.55 mm.
Compared with the prior art, the manufacturing process of the optical microstructure on the wedge-shaped surface of the light guide plate moving die core has the following beneficial effects: the optical microstructure on the wedge-shaped surface of the mold core of the movable mold of the light guide plate manufactured by the process has the advantages that because the wedge-shaped surface of the light guide plate is intersected with the light incident surface of the light guide plate, the light incident surface of the light guide plate is orthogonal to the light emergent surface of the light guide plate, incident light is scattered into the wedge-shaped body of the light guide plate through the sawteeth of the light incident surface on the light guide plate body, a part of light is transmitted by the optical reflection points of the light emergent surface, then the light is reflected back to the wedge-shaped body of the light guide plate through a reflector plate in the backlight source and then is refracted out through the optical microstructures on the wedge-shaped surface of the light guide plate, more light is concentrated on the wedge-shaped part of the light guide plate on the surface, so as to improve various optical problems near the light incident side, such as firefly phenomenon, bright and dark block phenomenon, and chromatic aberration phenomenon with high requirement on the whole, and the other part of light continuously enters the light guide plate body forwards in a refraction and reflection mode, so that the light guide plate body integrally generates a light-emitting effect.
Drawings
Fig. 1 is a schematic diagram of the moving mold in step 1 in the process of the preferred embodiment of the process for manufacturing the optical microstructures on the wedge-shaped surfaces of the mold core of the light guide plate moving mold according to the present invention.
FIG. 2 is an enlarged view of the portion A of the moving mold in step 1 of the process for fabricating the optical microstructure on the wedge-shaped surface of the core of the moving mold for light guide plate according to the preferred embodiment of the present invention.
FIG. 3 is a cross-sectional view of a moving mold plated with nickel in step 2 of the process for fabricating optical microstructures on the wedge-shaped surface of the core of the moving mold for light guide plate according to the preferred embodiment of the present invention.
FIG. 4 is a cross-sectional view of a movable mold with a non-molding surface formed in step 3 of the process of the preferred embodiment of the process for forming optical microstructures on the wedge-shaped surface of the core of the movable mold for light guide plates according to the present invention.
FIG. 5 is a schematic diagram of step 4 in the process of the preferred embodiment of the process for manufacturing the optical microstructures on the wedge-shaped surfaces of the core of the moving mold for light guide plates according to the present invention.
FIG. 6 is a schematic diagram of step 5 in the process of the preferred embodiment of the process for manufacturing the optical microstructures on the wedge-shaped surfaces of the core of the moving mold for light guide plates according to the present invention.
Fig. 7 is a partial enlarged view of the portion W in the schematic diagram of step 5 in the process of the preferred embodiment of the process for manufacturing the optical microstructure on the wedge-shaped surface of the core of the light guide plate moving mold according to the present invention.
FIG. 8 is a schematic diagram of step 6 in the process of the preferred embodiment of the process for manufacturing the optical microstructures on the wedge-shaped surfaces of the core of the moving mold for light guide plates according to the present invention.
FIG. 9 is a schematic diagram of step 7 in the process of the preferred embodiment of the process for manufacturing the optical microstructures on the wedge-shaped surfaces of the core of the moving mold for light guide plates according to the present invention.
FIG. 10 is a schematic diagram of step 8 in the process of the preferred embodiment of the process for manufacturing the optical microstructures on the wedge-shaped surfaces of the core of the moving mold for light guide plates according to the present invention.
Fig. 11 is a top view of the moving mold with the optical microstructure manufactured in step 9 in the process of the preferred embodiment of the process for manufacturing the optical microstructure on the wedge-shaped surface of the core of the moving mold for a light guide plate according to the present invention.
FIG. 12 is a B-B cross-sectional view of the moving mold with optical microstructures formed in step 9 of the preferred embodiment of the process for forming optical microstructures on the wedge-shaped surfaces of the core of the moving mold for light guide plates according to the present invention.
FIG. 13 is an enlarged cross-sectional view of the optical microstructure B-B with a V-shaped cross-section in step 9 of the process for fabricating the optical microstructure on the wedge-shaped surface of the core of the light guide plate moving mold according to the preferred embodiment of the present invention.
FIG. 14 is an enlarged cross-sectional view of the optical microstructure B-B with an arc-shaped cross-section in step 9 of the process for fabricating the optical microstructure on the wedge-shaped surface of the core of the light guide plate moving mold according to another embodiment of the present invention.
FIG. 15 is an enlarged cross-sectional view of the optical microstructure B-B with a trapezoidal cross-section in step 9 of the process for manufacturing the optical microstructure on the wedge-shaped surface of the mold core of the light guide plate moving mold according to another embodiment of the present invention.
Detailed Description
The manufacturing process of the optical microstructure on the wedge-shaped surface of the light guide plate moving mold core is suitable for manufacturing moving mold cores of various light guide plate molds.
Referring to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, fig. 10, fig. 11, fig. 12, fig. 13, fig. 14 and fig. 15, a preferred embodiment of a process for manufacturing optical microstructures on wedge surfaces of a core of a light guide plate moving mold according to the present invention is described in detail.
The invention provides a process for manufacturing an optical microstructure on a wedge-shaped surface of a mold core of a movable mold of a light guide plate, which is characterized by comprising the following steps of:
(1) and manufacturing a movable mold core 1, and manufacturing a wedge-shaped surface 3 on the movable mold core 1.
(2) And (2) plating a nickel layer 1.1 on the molding surface of the movable mold core, and plating a nickel layer 3.1 on the wedge-shaped surface 3 at the same time.
(3) And (3) processing the non-molding surface of the wedge-shaped surface 3 which is plated with the nickel layer to meet the design size requirement.
(4) The preparation work of precise CNC and auxiliary tools required for producing the optical microstructure 3.2 on the wedge surface 3 of the movable die core 1 is carried out:
a. preparing a specially-modified precise CNC (computer numerical control), wherein the precision can reach the micron level, installing a specially-made cutter seat 3 and a processing cutter 4 in the Z-axis direction of the CNC, and enabling the cutter seat 3 and the processing cutter 4 to move up and down along with the Z-axis direction.
b. And adjusting the tool base 3 and the machining tool 4 to be in a working state, and after the tool tip 4.1 of the machining tool 4 is perpendicular to the working table surface 2 of the CNC, the tool base 3 and the machining tool 4 move along with the Z axis of the precision CNC during machining according to requirements.
c. CNC's table surface 2 positive centers places a sucking disc anchor clamps 5, 5 long wide sizes of sucking disc anchor clamps are compared it is big to remove 1 long wide sizes of mould core, rectify sucking disc anchor clamps 5's working plane is perpendicular with the Z axle, controls sucking disc anchor clamps 5's working plane's plane degree is below 2 mu m.
(5) And placing the movable mould core 1 on a sucker clamp 5, wherein the length direction is placed along the Y direction, and the length and the width of the corrected movable mould core are parallel to the XY axis of the workbench.
(6) The nickel layer forming surface 1.1 of the movable mould core is processed for the first time, a used cutter 4 is a diamond cutter with Ra, the range of Ra is 18.50mm, and the processing procedure is well compiled to enable the surface to be infinitely close to the plane.
(7) The wedge-shaped surface 3 on the movable die core 1 is horizontal to the workbench 2 and is orthogonal to the cutter 4 by adjusting an adjusting screw rod on the sucker clamp 5.
(8) The wedge-shaped surface 3 of the movable die core 1 is machined for the first time, the used cutter 4 is a diamond cutter with Ra, the range of Ra is 18.50mm, and the machining program is compiled to enable the surface of the wedge-shaped surface to be infinitely close to a plane.
(9) According to design requirements, the workbench moves in sequence along the XY axes, and a CNC machining center is matched to enable the machining cutter to move in the Z-axis direction, so that the optical microstructure 3.2 is machined.
(10) And after the processing is finished according to the set processing parameters, cleaning the optical microstructure on the nickel layer working surface on the wedge surface.
In this embodiment, the thickness of the nickel layer in the process for manufacturing the optical microstructure on the wedge-shaped surface of the mold core of the light guide plate moving mold is 0.55 mm.
In this embodiment, in the manufacturing process of the optical microstructure on the wedge surface of the movable mold core of the light guide plate, the profiling diamond cutter performs the 3.2 milling manufacturing of the optical microstructure on the nickel layer 3.1 on the wedge surface 3 of the movable mold core 1.
In this embodiment, in the process for manufacturing the optical microstructure on the wedge surface of the movable mold core of the light guide plate, the working surface of the profiling diamond knife is perpendicular to the optical microstructure 3.2 of the nickel layer 3.1 on the wedge surface 3 of the movable mold core 1.
In this embodiment, the wedge-shaped surface 3 in the process for manufacturing the optical microstructure on the wedge-shaped surface of the movable mold core of the light guide plate is a rising wedge-shaped surface.
In other embodiments, the wedge-shaped surface 3 in the process for manufacturing the optical microstructure on the wedge-shaped surface of the movable mold core of the light guide plate of the present invention is a descending wedge-shaped surface.
Compared with the prior art, the manufacturing process of the optical microstructure on the wedge-shaped surface of the light guide plate moving die core has the following beneficial effects: the optical microstructure on the wedge-shaped surface of the mold core of the movable mold of the light guide plate manufactured by the process has the advantages that because the wedge-shaped surface of the light guide plate is intersected with the light incident surface of the light guide plate, the light incident surface of the light guide plate is orthogonal to the light emergent surface of the light guide plate, incident light is scattered into the wedge-shaped body of the light guide plate through the sawteeth of the light incident surface on the light guide plate body, a part of light is transmitted by the optical reflection points of the light emergent surface, then the light is reflected back to the wedge-shaped body of the light guide plate through a reflector plate in the backlight source and then is refracted out through the optical microstructures on the wedge-shaped surface of the light guide plate, more light rays are concentrated on the wedge-shaped surface of the light guide plate, so that various optical problems near the light incident side, such as a firefly phenomenon, a bright and dark block phenomenon and an overall high-requirement chromatic aberration phenomenon, are improved, and the other part of light continuously enters the light guide plate body forwards in a refraction and reflection mode, so that the light guide plate body integrally generates a light-emitting effect.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (7)
1. A manufacturing process of an optical microstructure on a wedge-shaped surface of a mold core of a movable mold of a light guide plate is characterized by comprising the following steps:
(1) manufacturing a movable mold core, and manufacturing a wedge-shaped surface on the movable mold core;
(2) plating a nickel layer on the molding surface of the movable mold core, and plating a nickel layer on the wedge-shaped surface;
(3) processing the non-molding surface of the wedge-shaped surface plated with the nickel layer to meet the design size requirement;
(4) preparing a precise CNC and auxiliary tools required for producing the optical microstructure on the wedge surface on the mold core of the movable mold:
a. preparing a precise CNC with the precision reaching the micron level, and installing a specially-made cutter seat and a processing cutter in the Z-axis direction of the CNC, wherein the cutter seat and the processing cutter can move up and down along the Z-axis direction,
b. adjusting the tool seat and the processing tool to a working state, enabling the tool point of the processing tool to be vertical to the upper surface of the workbench of the CNC, enabling the tool seat and the processing tool to move along with the Z axis of the precision CNC according to requirements during processing,
c. a sucker clamp is placed in the center of the upper surface of the CNC workbench, the length and width of the sucker clamp are larger than those of the movable die core, the working plane of the sucker clamp is corrected to be perpendicular to the Z axis, and the flatness of the working plane of the sucker clamp is controlled to be below 2 microns;
(5) placing the movable mould core on a sucker clamp, wherein the length direction of the movable mould core is placed along the Y direction, and the length and the width of the movable mould core are corrected to be parallel to the XY axes of the workbench;
(6) the forming surface of the nickel layer of the movable mould core is processed for the first time, a used cutter is a Ra diamond cutter, and the range of Ra is 10-40mm, so that the surface of the movable mould core is infinitely close to the plane;
(7) adjusting an adjusting screw rod on the sucker clamp to enable a wedge-shaped surface on a movable die core to be horizontal to a workbench and to be orthogonal to a cutter;
(8) the wedge-shaped surface on the movable mould core is machined for the first time, a used cutter is a Ra diamond cutter, and the range of Ra is 10-40mm, so that the surface of the movable mould core is infinitely close to the plane;
(9) according to design requirements, the workbench moves in the XY axis sequence and is matched with a CNC machining center to enable a machining cutter to move in the Z axis direction so as to machine an optical microstructure;
(10) and after the processing is finished according to the set processing parameters, cleaning the optical microstructure on the nickel layer working surface on the wedge surface.
2. The process of claim 1, wherein the process comprises the steps of: the thickness of the nickel layer is 0.05mm-0.6 mm.
3. The process of claim 1, wherein the process comprises the steps of: and carrying out the planing and milling manufacture on the nickel layer on the wedge-shaped surface on the movable mould core by using a profiling diamond cutter.
4. The process of claim 2, wherein the optical microstructure on the wedge-shaped surface of the core of the light guide plate moving mold comprises: and carrying out the planing and milling manufacture on the nickel layer on the wedge-shaped surface on the movable mould core by using a profiling diamond cutter.
5. The process of claim 4, wherein the optical microstructure is formed on the wedge-shaped surface of the core of the light guide plate moving mold, and the process comprises the following steps: the working surface of the profiling diamond cutter is perpendicular to the optical microstructure of the nickel layer on the wedge surface on the movable die core.
6. The process of claim 5, wherein the optical microstructure is formed on the wedge-shaped surface of the core of the light guide plate moving mold, and the process comprises the following steps: the wedge-facet is either an ascending wedge-facet or a descending wedge-facet.
7. The process of claim 5, wherein the optical microstructure is formed on the wedge-shaped surface of the core of the light guide plate moving mold, and the process comprises the following steps: ra is in the range of 18.50mm, and the thickness of the nickel layer is 0.55 mm.
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| JP2001006422A (en) * | 1999-06-18 | 2001-01-12 | Enplas Corp | Side light surface light source device and liquid crystal display device |
| CN201886164U (en) * | 2010-11-16 | 2011-06-29 | 江西联创致光科技有限公司 | Light guide plate with end-face wedged microstructures |
| TW201305679A (en) * | 2011-07-28 | 2013-02-01 | Hon Hai Prec Ind Co Ltd | Light guide plate and back-lit module using the same |
| CN102728956A (en) * | 2012-06-15 | 2012-10-17 | 张英兵 | Technology for machining surface microstructure of optical mold |
| CN102928911A (en) * | 2012-10-26 | 2013-02-13 | 京东方科技集团股份有限公司 | Light guide plate and manufacturing method of light guide plate as well as backlight module and display device |
| CN102914815A (en) * | 2012-10-30 | 2013-02-06 | 苏州达方电子有限公司 | Light guide plate structure |
| CN204515180U (en) * | 2015-03-19 | 2015-07-29 | 华南理工大学 | A kind of microlens array light guide plate of self-adaptation spacing |
| CN104849796A (en) * | 2015-03-19 | 2015-08-19 | 华南理工大学 | Micro-lens array light guide plate with adaptive spacing |
| CN106249342A (en) * | 2016-09-27 | 2016-12-21 | 上海向隆电子科技有限公司 | Light guide plate and the backlight module thereof of hot spot phenomenon can be eliminated |
| CN208100436U (en) * | 2018-03-27 | 2018-11-16 | 苏州天禄光科技股份有限公司 | Light guide plate end surface machining apparatus and its cutter |
| CN109116464B (en) * | 2018-08-31 | 2020-06-30 | 合肥泰沃达智能装备有限公司 | Backlight module for light incidence side microstructure of light guide plate |
| CN109407202A (en) * | 2018-11-16 | 2019-03-01 | 薛治邑 | A kind of SMS light guide plate and preparation method |
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