CN104678481A - Edge occlusion-packaged light guide film and processing die and processing method thereof - Google Patents
Edge occlusion-packaged light guide film and processing die and processing method thereof Download PDFInfo
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- CN104678481A CN104678481A CN201410851678.0A CN201410851678A CN104678481A CN 104678481 A CN104678481 A CN 104678481A CN 201410851678 A CN201410851678 A CN 201410851678A CN 104678481 A CN104678481 A CN 104678481A
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- Prior art keywords
- black
- film
- white
- light guiding
- light guide
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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
-
- 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
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
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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 an edge occlusion-packaged light guide film and a processing die and a processing method thereof. The light guide film comprises a black-white double-side tape, a black-white film and a light guide base film arranged between the black-white double-side tape and the black-white film; the edge of the light guide base film is reduced by a distance L relative to the edge of the black-white double-side tape or the black-white film; the black-white double-side tape and the black-white film are occluded in the reduced area of the light guide base film, the occlusion width is B, and B is equal to half or three fourths of L. The section of the black-white double-side tape or the black-white film at the position of occlusion is of a Z-shaped structure. The processing die of the edge occlusion-packaged light guide film comprises a male die and a pressing die; the edge of the male die is raised; the middle of the male die is sunken; the raised inner edge of the male die has the same shape as the outline of the edge of the light guide film, and the size of the sunken area is greater than the size of the light guide base film and less than the size of the black-white double-side tape or the black-white film; when the processing die is used for processing the light guide film, the light guide film is positioned on the raised part of the male die, and the pressing die is heated and presses the whole light guide film for a certain period of time. The structure of the processing die is simple; the processing method is convenient to operate; the edge of the light guide film is fully and firmly occluded, and the lateral light leakage of the light guide film can be effectively prevented for a long time.
Description
Technical field
The present invention relates to a kind of light guiding film, be specifically related to a kind of side occlusion encapsulation preventing light guiding film side leakage light light guiding film and for the processing mold of this light guiding film and job operation.
Background technology
Light guiding film is important component part in the backlight module of LCDs and mobile phone key, is mainly used in the light of LED incidence being imported light guiding film inside and changing the total reflection condition that light is destroyed in light transmition path, and the exiting surface then perpendicular to light guiding film penetrates.Light guiding film side leakage influence of light light utilization, reduces the overall brightness of light guiding film.Current routine prevents the mode of light guiding film side leakage light from being adopt black and white double faced adhesive tape and black and white film light guiding film to be encapsulated, black and white double faced adhesive tape and black and white film are positioned at the upper and lower both sides of light guiding film, the edge wheel profile of three is consistent, light guiding film for base-in more than indentation 1mm, adopts a plane manual scraper plate laminating that the black and white double faced adhesive tape of upper and lower sides and black and white film bonding are encapsulated with black and white double faced adhesive tape or black and white film outline line.Require in this job operation that light guiding film inside contracts size comparatively large, cause available guide-lighting region area in light guiding film less, thus affect its light efficiency, cause display screen or button character brightness too dark.Reduce light guiding film to inside contract size for avoiding this problem conventional method as far as possible, but the fitting area of black and white double faced adhesive tape and black and white film reduces further after light guiding film inside contracts size reduction, the method laminating of manual scraper plate inevitably there will be side laminating crack, or due to unbalance stress, some sides side adhesive force firmly had of fitting is less, easily unclamps and cause side leakage light after the region that adhesive force is little uses for a long time.
Summary of the invention
The present invention seeks to overcome the deficiencies in the prior art, provide a kind of prevent light leak side occlusion encapsulation light guiding film and its processing mold and job operation.In this light guiding film, to inside contract size less for guide-lighting basement membrane, light guiding film guide-lighting region utilization factor is high, adopt punch pipe sensitive adhesion black and white double faced adhesive tape and the black and white film of special shape, can ensure that each side of guide-lighting basement membrane is evenly engaged, and black and white double faced adhesive tape or black and white film are " Z " shape structure in engagement region cross section, reduce the stress of its vertical direction, in its job operation, combine heating pressurization simultaneously, make engagement region uniform force, bonding firmly.
Technical scheme of the present invention is:
A kind of side occlusion encapsulation light guiding film, comprise black and white double faced adhesive tape 4 and black and white film 2, and the guide-lighting basement membrane 3 be located between the two, the relative black and white double faced adhesive tape 4 in edge of described guide-lighting basement membrane 3 and the edge of black and white film 2 inside contract a segment distance L, described black and white double faced adhesive tape 4 and black and white film 2 are engaged in the recessed area of guide-lighting basement membrane 3, occlusion width is B, and B=1/2 ~ 3/4L.
Further, described black and white double faced adhesive tape 4 or black and white film 2 are " Z " shape structure in this occlusion place cross section.
Further, preferably, it is 0.6 ~ 1.0mm that described guide-lighting basement membrane 3 inside contracts distance, and it is 0.3 ~ 0.75mm that described black and white double faced adhesive tape 4 and black and white film 2 are engaged width.
Present invention also offers the processing mold of above-mentioned light guiding film, described mould comprises the punch of edge protuberance intermediate recess structure, and the pressing mold to punch pressurization, the inward flange shape of described punch projection 1 is consistent with light guiding film edge contour, and wherein sunk area size is greater than guide-lighting basement membrane 3 size and is less than black and white double faced adhesive tape 4 or black and white film 2 size.
Further, be shelved on punch for convenience of light guiding film location, described light guiding film is provided with pilot hole, and described punch is provided with the backstay matched with described pilot hole.
Further, for improving the bounding force of black and white double faced adhesive tape and black and white film, described pressing mold is also provided with heating arrangement.
Further, described punch protruding 1 is strip structure, and its width is 2 ~ 5mm.
Adopt above-mentioned processing mold to process a job operation for side occlusion encapsulation light guiding film, its concrete steps are:
1) light guiding film location is placed in punch projection (1);
2) pressing mold is heated to 60 ~ 85 DEG C, adds 8T ~ 12T pressure and be pressed in whole light guiding film, and keep exerting pressure 2 ~ 5 seconds.
Further, in above-mentioned job operation, in described light guiding film, guide-lighting basement membrane 3 inside contracts 0.6 ~ 1.0mm, and it is 0.3 ~ 0.75mm that light guiding film locates protruding 1 inward flange of rear punch and black and white double faced adhesive tape 4 or black and white film 2 Edge Distance.
Further, preferably, in above-mentioned job operation, described pressing mold is heated to 80 DEG C, plus-pressure 10T, keeps exerting pressure 3 seconds.
Advantage of the present invention is:
1. in light guiding film of the present invention guide-lighting basement membrane to inside contract size less, thus improve guide-lighting region effective rate of utilization in light guiding film, black and white double faced adhesive tape or black and white film all realize seamless occlusion in surrounding side, its black and white double faced adhesive tape or black and white film are " Z " shape structure in engagement region, the vertical direction stress produced reduces, and avoids cracking, pressurizes in conjunction with in process to engagement region heating simultaneously, the occlusion of this area bonded is more firm, prevents light guiding film side leakage light more reliable.
2. the processing mold of light guiding film in the present invention, the protruding inward flange of punch and light guiding film edge shape match, and the inward flange of its pressing is between guide-lighting basement membrane edge and black and white double faced adhesive tape or black and white film edge, ensure that each position, light guiding film side all realizes bonding, adhesion area is laterally uniformly distributed, and occlusion firmly; This mould structure is simple, and be also provided with the backstay and pressing mold heating arrangement that coordinate with light guiding film pilot hole, be convenient to arrangement and the heating of light guiding film in process, it is very convenient to operate.
3. the light guiding film job operation in the present invention, it adopts above-mentioned processing mold, light guiding film positioning installation is simple, heat in pressing mold pressure process, improve the viscosity of black and white double faced adhesive tape on the one hand, on the other hand under heating pressurization, it is not yielding that black and white double faced adhesive tape or black and white film form " Z " shape Stability Analysis of Structures in engagement region, this job operation effectively improves black and white double faced adhesive tape or black and white film bonding intensity, also reduce bound stress, thus ensureing engagement region bonding firmly, this job operation is simple to operate, and the light guiding film lateral leakage protection light effect of processing is better.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is the schematic cross-section that in embodiment, light guiding film adopts processing mold processing;
Wherein: 1-punch protruding 2-black and white film 3-guide-lighting basement membrane 4-black and white double faced adhesive tape.
Embodiment
Embodiment:
The light guiding film of a kind of side occlusion encapsulation, its structure as shown in fig. 1, comprise guide-lighting basement membrane 3, and lay respectively on guide-lighting basement membrane 3, downside black and white double faced adhesive tape 4 and black and white film 1, the relative black and white double faced adhesive tape 4 in edge of described guide-lighting basement membrane 3 and the edge of black and white film 2 inside contract one end distance L, in this example, L is 0.8mm, described black and white double faced adhesive tape 4 and black and white film 2 are engaged in the recessed area of guide-lighting basement membrane 3, both occlusal contact condition face width degree are B, and B=1/2 ~ 3/4L, being engaged width B in this example is 0.6mm, black and white film 1 in occlusion place cross section in " Z " shape structure (if in this example in process black and white film 1 be positioned at the upside of guide-lighting basement membrane 1, then black and white double faced adhesive tape 4 is " Z " shape structure in this occlusion place cross section).
A kind of mould of the light guiding film in order to process the occlusion encapsulation of above-mentioned side is additionally provided in this example.This mould comprises the punch of edge protuberance intermediate recess structure, and the pressing mold to punch pressurization; Punch protruding 1 is the strip structure of wide 2 ~ 5mm, it closes sunk structure around in the middle of formation, the protruding 1 inward flange shape of punch is consistent with light guiding film edge contour, sunk area size is greater than guide-lighting basement membrane 3 size and is less than black and white double faced adhesive tape 4 or black and white film 1 size, to ensure that its engagement region is positioned at the recessed area of guide-lighting basement membrane 3 when this mould of use carries out exerting pressure occlusion.
Further, use in this mold pressing process, light guiding film to be packaged location is needed to be shelved in punch projection 1, light guiding film is provided with pilot hole (this pilot hole can arrange 2 ~ 4 as required), punch is provided with the backstay matched with this pilot hole, and in this example, pilot hole and backstay are 2.Further, described pressing mold is also built-in with heating arrangement, and black and white double faced adhesive tape 4 and black and white film 1 carry out bonding occlusion of exerting pressure at a certain temperature, improve the viscosity of black and white double faced adhesive tape 4.
The concrete grammar step using above-mentioned processing mold to process this light guiding film is:
(1) location that 2 backstays 2 of light guiding film pilot holes being directly enclosed within punch can realize light guiding film is shelved, in above-mentioned light guiding film, guide-lighting basement membrane 3 inside contracts 0.8mm, and behind location, the Edge Distance of protruding 1 inward flange of punch and black and white double faced adhesive tape 4 or black and white film 2 is 0.6mm;
(2) start the heating arrangement of pressing mold, pre-hot-die, adjustment temperature is 80 DEG C, and pressing mold applies 10T pressure and is pressed in whole light guiding film, keeps exerting pressure 3 seconds.In light guiding film after processing, black and white double faced adhesive tape 4 and black and white film 1 bond occlusion in guide-lighting basement membrane 3 recessed area, and the width in the occlusal contact condition face of side each position is 0.6mm.
Can be found out by above-described embodiment, the light guiding film processing mold of a kind of side occlusion encapsulation in the present invention and job operation, mould structure is very simple, easy to operate, ensure that processing each side of light guiding film obtained all realizes bonding occlusion, effectively prevent its side light leak, and pressing mold heating is exerted pressure, black and white double faced adhesive tape viscosity improves, it is not yielding that engagement region forms " Z " shape Stability Analysis of Structures, reduce bound stress, engagement region bonding firmly, ensure that the long-time reliable lateral leakage protection light of light guiding film.
Claims (10)
1. a side occlusion encapsulation light guiding film, comprise black and white double faced adhesive tape (4) and black and white film (2), and the guide-lighting basement membrane (3) be located between the two, it is characterized in that the edge of the relative black and white double faced adhesive tape (4) in the edge of described guide-lighting basement membrane (3) and black and white film (2) inside contracts a segment distance L, described black and white double faced adhesive tape (4) and black and white film (2) are engaged in the recessed area of guide-lighting basement membrane (3), occlusion width is B, and B=1/2 ~ 3/4L.
2. a kind of side occlusion encapsulation light guiding film according to claim 1, is characterized in that described black and white double faced adhesive tape (4) or black and white film (2) in this occlusion place cross section in " Z " shape structure.
3. a kind of side occlusion encapsulation light guiding film according to claim 1, it is characterized in that, it is 0.6 ~ 1.0mm that described guide-lighting basement membrane (3) inside contracts distance, and described black and white double faced adhesive tape (4) and black and white film (2) occlusion width are 0.3 ~ 0.75mm.
4. the processing mold of a side occlusion encapsulation light guiding film according to claim 1, it is characterized in that, comprise the punch of edge protuberance intermediate recess structure, and the pressing mold to punch pressurization, the inward flange shape of described punch projection (1) is consistent with light guiding film edge contour, and wherein sunk area size is greater than guide-lighting basement membrane (3) size and is less than black and white double faced adhesive tape (4) or black and white film (2) size.
5. processing mold according to claim 4, is characterized in that, described light guiding film is provided with pilot hole, and described punch is provided with the backstay matched with described pilot hole.
6. processing mold according to claim 4, is characterized in that, described pressing mold is also provided with heating arrangement.
7. processing mold according to claim 4, is characterized in that, described punch projection (1) is strip structure, and its width is 2 ~ 5mm.
8. a job operation for light guiding film described in claim 1, is characterized in that, adopt processing mold described in claim 4, its concrete steps are:
1) light guiding film location is placed in punch projection (1);
2) pressing mold is heated to 60 ~ 85 DEG C, adds 8T ~ 12T pressure and be pressed in whole light guiding film, and keep exerting pressure 2 ~ 5 seconds.
9. job operation according to claim 8, it is characterized in that, in described light guiding film, guide-lighting basement membrane (3) inside contracts 0.6 ~ 1.0mm, and it is 0.3 ~ 0.75mm that light guiding film locates rear punch projection (1) inward flange and black and white double faced adhesive tape (4) or black and white film (2) Edge Distance.
10. job operation according to claim 8, is characterized in that, described pressing mold is heated to 80 DEG C, plus-pressure 10T, keeps exerting pressure 3 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410851678.0A CN104678481A (en) | 2014-12-31 | 2014-12-31 | Edge occlusion-packaged light guide film and processing die and processing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410851678.0A CN104678481A (en) | 2014-12-31 | 2014-12-31 | Edge occlusion-packaged light guide film and processing die and processing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104678481A true CN104678481A (en) | 2015-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410851678.0A Pending CN104678481A (en) | 2014-12-31 | 2014-12-31 | Edge occlusion-packaged light guide film and processing die and processing method thereof |
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| CN (1) | CN104678481A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101271222A (en) * | 2007-12-10 | 2008-09-24 | 普胜科技电子（昆山）有限公司 | Three-layer combined optical film piece |
| CN201210211Y (en) * | 2008-06-16 | 2009-03-18 | 亚通光电科技(深圳)有限公司 | Back light module having wedge light conducting structure |
| CN202065781U (en) * | 2011-03-08 | 2011-12-07 | 深圳市兆纪光电有限公司 | Backlight module |
| CN203983105U (en) * | 2014-06-16 | 2014-12-03 | 群光电能科技股份有限公司 | The anti-side leakage structure of keyboard back light module |
-
2014
- 2014-12-31 CN CN201410851678.0A patent/CN104678481A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101271222A (en) * | 2007-12-10 | 2008-09-24 | 普胜科技电子（昆山）有限公司 | Three-layer combined optical film piece |
| CN201210211Y (en) * | 2008-06-16 | 2009-03-18 | 亚通光电科技(深圳)有限公司 | Back light module having wedge light conducting structure |
| CN202065781U (en) * | 2011-03-08 | 2011-12-07 | 深圳市兆纪光电有限公司 | Backlight module |
| CN203983105U (en) * | 2014-06-16 | 2014-12-03 | 群光电能科技股份有限公司 | The anti-side leakage structure of keyboard back light module |
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Application publication date: 20150603 |
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