CN110737044A - light guide plate mesh point direct-pressing transfer printing process - Google Patents
light guide plate mesh point direct-pressing transfer printing process Download PDFInfo
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- CN110737044A CN110737044A CN201910942976.3A CN201910942976A CN110737044A CN 110737044 A CN110737044 A CN 110737044A CN 201910942976 A CN201910942976 A CN 201910942976A CN 110737044 A CN110737044 A CN 110737044A
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- light guide
- guide plate
- transfer printing
- edges
- lower die
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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
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
- G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
-
- 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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a light guide plate mesh point direct-pressing transfer printing process which comprises the steps of a, selecting a stainless steel plate as a screen plate, processing corresponding convex mesh points on the steel plate through a laser machine, b, installing the processed steel plate on the lower surface of an upper die of a flat-pressing transfer printing machine, c, placing the light guide plate to be processed into a lower die of the flat-pressing transfer printing machine after tearing a film, d, starting the flat-pressing transfer printing machine, pressing the upper die downwards to be matched with the lower die, transferring the mesh point phenomenon on the surface of the steel plate to the surface of the light guide plate, and e, taking out the light guide plate in the lower die for natural cooling, wherein a plurality of concave mesh point structures are formed on the surface of the light guide plate, so that the processing is completed.
Description
Technical Field
The invention relates to a processing technology of kinds of light guide plate mesh points, in particular to a kinds of light guide plate mesh point direct-pressure transfer printing technology.
Background
The light guide plate adopts the light emitting principle that light emitted by the LBM is subjected to diffuse reflection on the surface of a plate, and the transmission path of the light is damaged by changing the size of a mesh point (printing process) and the density degree (hot pressing process), so that the optical uniformity and the brightness are improved.
The method aims at that the mesh points of the light guide plate can be carried out by adopting two modes of printing and thermal transfer printing, wherein the printing needs to be operated by using ink, and the use of the ink can pollute the environment, so the thermal transfer printing mode is a common method for processing the mesh points of the light guide plate, the prior thermal transfer printing is roller type thermal transfer printing, a mesh point steel plate is arranged on a roller, the smooth surface of the light guide plate is extruded by the heated roller to form concave-convex formation (mesh points) after hot pressing, the light guide plate moves forwards under the extrusion of the roller to form the processing of the mesh points on the whole surface, although the mesh point processing can be realized by the mode, the contact between the light guide plate and the roller belongs to dynamic contact because the roller is in rotation, the contact time is short, the mesh point transfer rate is lower, and the rolling processing mode is easy to cause rolling displacement so, resulting in the rejection of the light guide plate.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides light guide plate mesh point direct-pressure transfer printing processes, which can ensure that a steel plate is in integral contact with a light guide plate, and simultaneously, a static processing form can ensure that mesh points are completely transferred, thereby improving the transfer rate, ensuring the luminous effect refractive index of a light guide plate at a later point and improving the luminance effect.
In order to achieve the purpose, the invention provides the following technical scheme that the light guide plate mesh point direct-pressure transfer printing process comprises the following steps:
a. preparing steel plate mesh points: selecting a stainless steel plate as a screen plate, and processing corresponding convex screen points on the steel plate through a laser machine according to the designed screen point distribution;
b. steel plate installation: mounting the processed steel plate on the lower surface of an upper die of a flat-pressing transfer machine, wherein the convex dots are arranged downwards;
c. placing a light guide plate: placing the light guide plate to be processed into a lower die of a flat-pressing transfer machine after tearing a film, adjusting a limiting edge of the lower die to clamp the light guide plate in the lower die, and adjusting the position of the lower die to enable the lower die to vertically correspond to the upper die;
d. transfer printing processing: starting a flat-pressing transfer machine, internally heating an upper die to raise the temperature of the lower surface of the upper die by 80-150 ℃, pressing the upper die downwards to enable the upper die to be matched with the lower die, transferring the dot phenomenon on the surface of the steel plate to the surface of the light guide plate, and controlling the matching time to be 5-60 s and the downward pressure to be 1-20 t;
e. and (3) finishing the processing: and taking out the light guide plate in the lower die for natural cooling, and forming a plurality of concave mesh point structures on the surface of the light guide plate to finish processing.
Preferably, the mesh point sizes on the steel plate in the step a are the same or different.
Preferably, the mesh points in step a are regularly or irregularly distributed.
Preferably, the lower die in the step c is provided with a bottom plate and four limiting side plates, each two limiting side plates are movably connected, and the four limiting side plates enclose accommodating cavities with adjustable sizes for accommodating the light guide plate.
Preferably, the dot structure in the step e is an irregular four-pyramid groove, and has th edges, second edges, third edges and fourth edges, the lengths of the second edges and the fourth edges which are opposite setting surfaces are , the length of the th edges which are opposite setting surfaces is longer than that of the third edges, the th edges of the dots are opposite to the light incident surface of the light guide plate, and the bottoms of the dots are of curved surface structures.
Preferably, the included angle of the th edge relative to the central axis is 65-75 degrees, the included angle of the third edge relative to the central axis is 30-40 degrees, and the included angle of the second edge and the fourth edge relative to the central axis is 60-70 degrees.
Compared with the prior art, the kinds of light guide plate mesh point direct-pressing transfer printing process disclosed by the invention has the following beneficial effects:
the direct-pressure type transfer printing process can ensure that the steel plate is in integral contact with the light guide plate, the static processing form can ensure that the mesh points are completely transferred, the transfer printing rate is improved,
the size and distribution form of the mesh points can be selected in various ways so as to be suitable for processing different luminance requirements;
the adjustable lower die structure is adopted, so that the adjustable lower die is suitable for light guide plates with various sizes, and the applicability of the adjustable lower die is improved;
the irregular rectangular pyramid net point structure can effectively change the angle of the light refracting light out of the light guide plate, and the curved surface structure at the bottom is matched, so that the light output quantity of the vertical light guide plate and the light guide plate is increased, and the overall brightness is improved.
Drawings
Fig. 1 is a schematic diagram of a dot structure according to an embodiment of the present invention.
Detailed Description
The technical solution of the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings of the present invention.
The invention discloses an kinds of light guide plate mesh point direct-pressure transfer printing process, which mainly aims at the processing of a double-sided structure light guide plate, wherein a light-emitting surface of the double-sided structure light guide plate is provided with mesh points, and an opposite bottom surface is provided with a V-cut structure, and the specific process steps comprise:
a. preparing mesh points of the steel plate, namely selecting a stainless steel plate as a mesh plate, and processing corresponding convex mesh points on the steel plate by a laser machine according to the designed mesh point distribution, wherein the mesh points can be regularly distributed or irregularly distributed, the size of the mesh points can be the same as , and mesh points with different sizes can be arranged on the same steel plates;
b. steel plate installation: screwing the processed steel plate on the lower surface of an upper die of a flat-pressing transfer machine, wherein the convex mesh points are arranged downwards;
c. placing a light guide plate: placing the light guide plate to be processed into a lower die of a flat-pressing transfer machine after tearing a film, adjusting a limiting edge of the lower die to clamp the light guide plate in the lower die, and adjusting the position of the lower die to enable the lower die to vertically correspond to the upper die;
the lower die involved in the step is of a size-adjustable structure, the lower die is provided with a bottom plate and four limiting side plates, the four limiting side plates are connected in pairs to form a rectangular accommodating cavity, the limiting side plates are movably connected, the light guide plate is placed in the accommodating cavity, the light guide plate is clamped by adjusting the positions of the limiting side plates, the adjusting structure can realize the placement of the light guide plates of various sizes, the lower die does not need to be replaced, and the production cost is reduced.
d. Transfer printing processing: starting a flat-pressing transfer machine, internally heating an upper die to raise the temperature of the lower surface of the upper die by 80-150 ℃, pressing the upper die downwards to enable the upper die to be matched with the lower die, transferring the dot phenomenon on the surface of the steel plate to the surface of the light guide plate, and controlling the matching time to be 5-60 s and the downward pressure to be 1-20 t;
note that , if the lower surface temperature is low, the clamp time is controlled to be longer while the downforce is increased, and if the temperature is high, the clamp time and the downforce are decreased in inverse proportion to each other.
e. And (3) finishing the processing: and taking out the light guide plate in the lower die, naturally cooling to room temperature, and forming a plurality of concave mesh point structures on the surface of the light guide plate to finish processing.
As shown in fig. 1, this net point is irregular four pyramid groove structure, and tank bottom 1 is the curved surface, irregular four pyramid groove has edge 2, second edge 3, third edge 4 and fourth edge 5, wherein edge and third edge are in with vertical plane, and edge than third edge length, second edge and fourth edge are in with vertical plane, and second edge and fourth edge length send, when the light guide plate of net point on distributes, the edge is just to going into the plain noodles, the relative axis's of edge contained angle is 65 ~ 75, the relative axis's of third edge contained angle is 30 ~ 40, the relative axis's of second edge and fourth edge contained angle is 60 ~ 70.
Therefore, the scope of the present invention should not be limited to the disclosure of the embodiments, but includes various alternatives and modifications without departing from the scope of the present invention, which is defined by the claims of the present patent application.
Claims (6)
1, light guide plate mesh point direct-pressure transfer printing process, which is characterized by comprising the following process steps:
a. preparing steel plate mesh points: selecting a stainless steel plate as a screen plate, and processing corresponding convex screen points on the steel plate through a laser machine according to the designed screen point distribution;
b. steel plate installation: mounting the processed steel plate on the lower surface of an upper die of a flat-pressing transfer machine, wherein the convex dots are arranged downwards;
c. placing a light guide plate: placing the light guide plate to be processed into a lower die of a flat-pressing transfer machine after tearing a film, adjusting a limiting edge of the lower die to clamp the light guide plate in the lower die, and adjusting the position of the lower die to enable the lower die to vertically correspond to the upper die;
d. transfer printing processing: starting a flat-pressing transfer machine, internally heating an upper die to raise the temperature of the lower surface of the upper die by 80-150 ℃, pressing the upper die downwards to enable the upper die to be matched with the lower die, transferring the dot phenomenon on the surface of the steel plate to the surface of the light guide plate, and controlling the matching time to be 5-60 s and the downward pressure to be 1-20 t;
e. and (3) finishing the processing: and taking out the light guide plate in the lower die for natural cooling, and forming a plurality of concave mesh point structures on the surface of the light guide plate to finish processing.
2. The light guide plate mesh point direct-pressure transfer printing process according to claim 1, characterized in that: and (b) the sizes of the mesh points on the steel plate in the step (a) are the same or different.
3. The light guide plate mesh point direct-pressure transfer printing process according to claim 1, characterized in that: the mesh points in the step a are regularly or irregularly distributed.
4. The direct-pressure transfer printing process of light guide plate mesh points according to claim 1, wherein in the step c, the lower mold comprises a bottom plate and four limiting side plates, each two limiting side plates are movably connected, and the four limiting side plates enclose accommodating cavities with adjustable sizes for accommodating the light guide plate.
5. The direct-pressure transfer printing process of the light guide plate mesh points of claim 1, wherein in the step e, the mesh point structure is an irregular four-pyramid groove having th edges, second edges, third edges and fourth edges, the lengths of the second edges and the fourth edges of the opposite surfaces are , the length of the th edges of the opposite surfaces is longer than that of the third edges, the th edges of the mesh points are opposite to the light incident surface of the light guide plate, and the groove bottoms of the mesh points are of a curved surface structure.
6. The light guide plate mesh point direct-pressure transfer printing process of claim 5, wherein an included angle between the th edge and the central axis is 65-75 degrees, an included angle between the third edge and the central axis is 30-40 degrees, and an included angle between the second edge and the fourth edge and the central axis is 60-70 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910942976.3A CN110737044A (en) | 2019-12-05 | 2019-12-05 | light guide plate mesh point direct-pressing transfer printing process |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910942976.3A CN110737044A (en) | 2019-12-05 | 2019-12-05 | light guide plate mesh point direct-pressing transfer printing process |
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| CN110737044A true CN110737044A (en) | 2020-01-31 |
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| CN201910942976.3A Pending CN110737044A (en) | 2019-12-05 | 2019-12-05 | light guide plate mesh point direct-pressing transfer printing process |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101885236A (en) * | 2009-05-14 | 2010-11-17 | 先益电子工业股份有限公司 | Hot press forming device for thin light guide panel |
| CN102320719A (en) * | 2011-09-29 | 2012-01-18 | 郑州恒昊玻璃技术有限公司 | Manufacturing method of glass grating |
| 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 |
| CN205982704U (en) * | 2016-08-26 | 2017-02-22 | 信利半导体有限公司 | Light guide plate, heated press mold , backlight and liquid crystal display module |
| CN109927373A (en) * | 2019-04-18 | 2019-06-25 | 宁波长青家居用品有限公司 | Preparation method with three-dimensional sense flag |
| CN209728220U (en) * | 2019-02-28 | 2019-12-03 | 苏州天禄光科技股份有限公司 | A kind of pyramid shape light guide plate mesh point structure |
-
2019
- 2019-12-05 CN CN201910942976.3A patent/CN110737044A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101885236A (en) * | 2009-05-14 | 2010-11-17 | 先益电子工业股份有限公司 | Hot press forming device for thin light guide panel |
| CN102320719A (en) * | 2011-09-29 | 2012-01-18 | 郑州恒昊玻璃技术有限公司 | Manufacturing method of glass grating |
| 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 |
| CN205982704U (en) * | 2016-08-26 | 2017-02-22 | 信利半导体有限公司 | Light guide plate, heated press mold , backlight and liquid crystal display module |
| CN209728220U (en) * | 2019-02-28 | 2019-12-03 | 苏州天禄光科技股份有限公司 | A kind of pyramid shape light guide plate mesh point structure |
| CN109927373A (en) * | 2019-04-18 | 2019-06-25 | 宁波长青家居用品有限公司 | Preparation method with three-dimensional sense flag |
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Application publication date: 20200131 |
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