CN110161619B - Light guide plate - Google Patents
Light guide plate Download PDFInfo
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- CN110161619B CN110161619B CN201910466594.8A CN201910466594A CN110161619B CN 110161619 B CN110161619 B CN 110161619B CN 201910466594 A CN201910466594 A CN 201910466594A CN 110161619 B CN110161619 B CN 110161619B
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- guide plate
- light guide
- light
- side wall
- irregular
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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
- G02B6/0081—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)
- Light Guides In General And Applications Therefor (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention provides a light guide plate, which comprises a light guide plate body, a light incident surface for receiving incident light beams, a light emergent surface for guiding out the light beams, a light reflecting surface opposite to the light emergent surface, a first edge surface and a second edge surface which are positioned at two side ends of the light emergent surface, and a tail end surface opposite to the light incident surface, and is characterized in that: and an irregular U-shaped structure is arranged at the intersection of the edge face I or the edge face II and the tail end face, the light incident face, the light emergent face or the light reflecting face. The height of the side wall B, namely the burr or the burr of the irregular U-shaped structure of the light guide plate is equal to or less than the height of the side wall A, namely the height of the light guide plate, of the irregular U-shaped structure, at the moment, the height of the burr is equal to or less than the height of the light guide plate and cannot exceed the height of the light guide plate by 0.02mm at most, and when the backlight source is assembled, the burr of the light guide plate cannot push against the diffusion sheet, so that all accessories of the backlight source cannot be assembled in place.
Description
Technical Field
The present disclosure relates to light guide plates, and particularly to a light guide plate having an irregular concave structure, an irregular stepped structure, or an irregular U-shaped structure.
Background
In the manufacturing process of the conventional light guide plate, the structure of the light-emitting surface optical microstructure of the conventional light guide plate is shown in fig. 1 and fig. 2, fig. 3, fig. 4, and fig. 5.
Fig. 3, 4 and 5 show three common structures of the optical microstructure of the light-emitting surface.
The most used circular arc convex strip in fig. 2 is described by taking it as an example, and it is characterized in that: the strip convex strip circular arc optical microstructures are arranged in an array mode along the width direction of the light guide plate body, when the radius size of the circular arc is determined, the distance S between the circular arc optical microstructures is larger than the chord length M of the circular arc optical microstructures, which is intersected with the light guide plate, and a small section of platform is arranged between the circular arc optical microstructures and the light guide plate.
In addition, the edge surface of the light guide plate can be abraded due to the action of a compression mold and burrs appear on the edge of the molded part due to the vertical exhaust gap or the manufacturing process, the height H of the burrs can be higher than the height K of the strip-shaped raised line and the height K of the light emitting surface, and the problems can be caused:
1) when the backlight source is assembled, burrs of the flash can push against the diffusion sheet, so that all accessories of the backlight source cannot be assembled in place, and a common processing method is to increase the edge polishing process, but the machine of the edge polishing process is expensive and complicated.
2) The pure flash does not meet the requirement of customers on the appearance of the light guide plate product.
3) The extremely small edge flash may appear as a broken filament, and may contaminate the light-emitting surface when the mold is taken out, so that the light guide plate product is unqualified.
Disclosure of Invention
Based on the defects of the prior art, the invention provides a light guide plate, wherein an irregular concave structure, an irregular step-shaped structure or an irregular U-shaped structure is arranged at the intersection of the edge surface or the edge surface and the tail end surface, the light incident surface, the light emergent surface or the light reflecting surface of the light guide plate, the height of a burr or burr on the side wall B of the irregular concave structure, the irregular step-shaped structure or the irregular U-shaped structure is equal to or less than the height of the side wall A of the irregular concave structure, the height of the burr or burr is equal to or less than the height of the light guide plate, the height of the burr or burr is not more than 0.02mm of the light guide plate, when the backlight source is assembled, the burr of the light guide plate can not prop against the diffusion sheet, and the accessories of the backlight source can not be assembled in place.
In order to achieve the above object, the present invention provides a light guide plate, including a light guide plate body, a light incident surface for receiving an incident light beam, a light exit surface for guiding out the light beam, a light reflection surface opposite to the light exit surface, a first edge surface and a second edge surface located at two side ends of the light exit surface, and a tail end surface opposite to the light incident surface, wherein the light incident surface intersects with the light exit surface, the light guide plate is characterized in that: and an irregular concave structure, an irregular step structure or an irregular U-shaped structure is arranged at the intersection of the edge face I or the edge face II and the tail end face, the light inlet face, the light outlet face or the light reflecting face.
As an improvement of the light guide plate, the irregular concave structure, the irregular step structure or the irregular U-shaped structure of the light guide plate is provided with two side walls, namely a side wall A and a side wall B, wherein the side wall A is connected with the light guide plate body, and the height h1 of the side wall B is greater than, equal to or less than the height of the side wall A.
As an improvement of the light guide plate of the invention, the height h1 of the side wall B of the light guide plate of the invention is 0-0.02mm greater than the height h2 of the side wall A.
As an improvement of the light guide plate, the irregular concave structure, the irregular step structure or the irregular U-shaped structure of the light guide plate is provided with two side walls, namely a side wall A and a side wall B, the side wall A is connected with the light guide plate body, and the farthest distance w1 between the side wall A and the side wall B is larger than 0mm and smaller than 0.5 mm.
As an improvement of the light guide plate, the light reflecting surface 4 of the light guide plate is provided with irregular inverted V-shaped protrusions 4.1 or smooth surfaces 4.2.
As an improvement of the light guide plate, the irregular inverted V-shaped bulge of the light guide plate is provided with wave crests and wave troughs.
As an improvement of the light guide plate, the side wall A of the light guide plate is intersected with, tangent to or intersected with one side and the other side of the wave crest or the wave trough of the irregular inverted V-shaped bulge.
As an improvement of the light guide plate, the side wall B of the light guide plate is a flash, a burr or a scrap edge generated by an exhaust gap and material injection pressure in the forming process of the light guide plate body.
As an improvement of the light guide plate of the invention, the height h1 of the side wall B of the light guide plate of the invention is 0.01mm greater than the height h2 of the side wall A, and the farthest distance w1 between the side wall A and the side wall B is 0.25 mm.
Compared with the prior art, the light guide plate has the following beneficial effects: because the intersection of the edge surface or the edge surface II and the tail end surface, the light inlet surface, the light outlet surface or the light reflecting surface of the light guide plate is provided with an irregular concave structure, an irregular step-shaped structure or an irregular U-shaped structure, the height of the side wall B of the irregular concave structure, the irregular step-shaped structure or the irregular U-shaped structure, namely the burr or the burr, is equal to or less than the height of the side wall A of the irregular concave structure, the irregular step-shaped structure or the irregular U-shaped structure, namely the burr or the burr, namely the height of the burr is equal to or less than the height of the light guide plate, the highest burr of the burr can not exceed the height of the light guide plate by 0.02mm, when the backlight source is assembled, the burr of the light guide plate can not prop against the diffusion sheet, and the accessories of the backlight source can not be assembled in place.
Drawings
Fig. 1 is a schematic structural diagram of a light guide plate in the prior art.
FIG. 2 is a cross-sectional view of a light guide plate in the prior art.
Fig. 3 is a partially enlarged view 1 of a portion a of a cross-sectional view of a light guide plate according to the related art.
Fig. 4 is a partially enlarged view 2 of a portion a of a cross-sectional view of a light guide plate according to the related art.
Fig. 5 is a partial enlarged view 3 of a portion a of a cross-sectional view of a light guide plate according to the related art.
FIG. 6 is a perspective view of a light guide plate according to a preferred embodiment of the light guide plate of the present invention, shown in FIG. 1.
FIG. 7 is a perspective view of the light guide plate of the preferred embodiment of the light guide plate of the present invention, showing FIG. 2.
FIG. 8 is a perspective view of the light guide plate in the preferred embodiment of the light guide plate of the present invention, showing FIG. 3.
Fig. 9 is a partially enlarged view of the portion M in fig. 8 according to the preferred embodiment of the light guide plate of the present invention.
FIG. 10 is a perspective view of a light guide plate according to a preferred embodiment of the light guide plate of the present invention, illustrating FIG. 4.
FIG. 11 is a cross-sectional view taken along line A-A of FIG. 10 of a light guide plate according to a preferred embodiment of the present invention.
FIG. 12 is a partial enlarged view of portion G of FIG. 11 of the light guide plate of the present invention, wherein h1 < h 2.
Fig. 13 is a partially enlarged view of the portion G in fig. 11 of the light guide plate according to the preferred embodiment of the present invention, where h1 is h 2.
FIG. 14 is a partial enlarged view of portion G of the light guide plate of FIG. 11, wherein h1 > h 2.
Fig. 15 is a schematic structural view of a light guide plate in a backlight according to the prior art.
Fig. 16 is a partially enlarged view of a portion B of a light guide plate in the prior art in a backlight.
FIG. 17 is a schematic view of a light guide plate according to the present invention in a backlight.
FIG. 18 is a partial enlarged view of section E of a light guide plate according to the present invention in a backlight.
Detailed Description
The light guide plate is suitable for manufacturing backlight sources in various mobile phones or other equipment.
Preferred embodiments and other embodiments of the light guide plate of the present invention will be described in detail with reference 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, fig. 15, fig. 16, fig. 17 and fig. 18.
The invention provides a light guide plate, including the light guide plate body 1, the light incoming surface 2 used for receiving the incident beam, the light outgoing surface 3 used for guiding the light beam out, the reflecting surface 4 opposite to 3 of the light outgoing surface, edge face one 5 and edge face two 6 located at both sides of 3 of the said light outgoing surface and end face 7 opposite to 2 of said light incoming surface, 2 of said light incoming surface intersects 3 of said light outgoing surface, characterized by that: an irregular U-shaped structure 8 is arranged at the intersection of the edge face I5 or the edge face II 6 and the tail end face 7, the light incident face 2, the light emergent face 3 or the light reflecting face 4.
In other embodiments, the light guide plate of the present invention has an irregular concave structure or an irregular step-shaped structure at the intersection of the first edge surface 5, the second edge surface 6, the tail end surface 7, the light incident surface 2, the light emitting surface 3, and the light reflecting surface 4.
In this embodiment, the irregular U-shaped structure 8 of the light guide plate of the present invention has two sidewalls, i.e., an a sidewall 8.1 and a B sidewall 8.2, where the a sidewall is connected to the light guide plate body 1, and a height h1 of the B sidewall 8.2 is less than a height h2 of the a sidewall 8.1.
In other embodiments, the irregular U-shaped structure 8 of the light guide plate of the present invention has two sidewalls, i.e., an a sidewall 8.1 and a B sidewall 8.2, respectively, the a sidewall is connected to the light guide plate body 1, and a height h1 of the B sidewall 8.2 is greater than or equal to a height h2 of the a sidewall 8.1.
In other embodiments, the height h1 of the side wall B of the light guide plate of the present invention is 0.01mm greater than the height h2 of the side wall A.
In this embodiment, the irregular U-shaped structure 8 of the light guide plate of the present invention has two sidewalls, i.e., an a sidewall 8.1 and a B sidewall 8.2, respectively, the a sidewall is connected to the light guide plate body 1, and a farthest distance w1 between the a sidewall 8.1 and the B sidewall 8.2 is 0.25 mm.
In this embodiment, the light reflecting surface 4 of the light guide plate of the present invention is provided with irregular inverted V-shaped protrusions 4.1 and a smooth surface 4.2.
In this embodiment, the irregular inverted V-shaped protrusions 4.1 of the light guide plate of the present invention are provided with peaks 4.1.1 and valleys 4.1.2.
In this embodiment, the a side wall 8.1 of the light guide plate of the present invention intersects with the valleys 4.1.2 of the irregular inverted V-shaped protrusions 4.1.
In other embodiments, the a side wall 8.1 of the light guide plate of the present invention is tangent to the peak 4.1.1 or the valley 4.1.2 of the irregular inverted V-shaped protrusion 4.1 or tangent to one side and the other side.
In the present embodiment, the sidewall B8.2 of the light guide plate of the present invention is a burr, burr or scrap edge generated by the exhaust gap Y and the injection pressure during the molding process of the light guide plate body 1.
As shown in fig. 15-16, the light guide plate in the prior art is installed in the backlight, the reflective sheet 11, the frame 12, the light guide plate 13, the diffusion sheet 14, the lower brightness enhancement sheet 15, the upper brightness enhancement sheet 16, the black double-sided tape light shielding film 17, the burrs 18 generated by the light guide plate long-side glue injection, and the burrs and burrs generated by the light guide plate long-side glue injection force empty steps 19, the burrs and burrs generated by the light guide plate long-side glue injection occur due to the burrs 18 generated by the light guide plate long-side glue injection, and the black double-sided tape light shielding film 17 cannot be tightly attached to the frame 12.
As shown in fig. 17-18, the light guide plate of the present invention is installed in the backlight source, the reflective sheet 11, the frame 12, the light guide plate 13, the diffusion sheet 14, the lower light enhancement sheet 15, the upper light enhancement sheet 16, the black double-sided tape light shielding film 17, the irregular U-shaped structure 8 and the a-side wall 8.1 of the irregular U-shaped structure 8, because the height h1 of the B-side wall 8.2 is smaller than the height h2 of the a-side wall 8.1, the black double-sided tape light shielding film 17 is tightly attached to the frame 12.
Compared with the prior art, the invention has the following beneficial effects: because the intersection of the edge surface or the edge surface II and the tail end surface, the light inlet surface, the light outlet surface or the light reflecting surface of the light guide plate is provided with an irregular concave structure, an irregular step-shaped structure or an irregular U-shaped structure, the height of the side wall B of the irregular concave structure, the irregular step-shaped structure or the irregular U-shaped structure, namely the burr or the burr, is equal to or less than the height of the side wall A of the irregular concave structure, the irregular step-shaped structure or the irregular U-shaped structure, namely the burr or the burr, namely the height of the burr is equal to or less than the height of the light guide plate, the highest burr of the burr can not exceed the height of the light guide plate by 0.02mm, when the backlight source is assembled, the burr of the light guide plate can not prop against the diffusion sheet, and the accessories of the backlight source can not be assembled in place.
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 (8)
1. A light guide plate comprises a light guide plate body, a light incident surface for receiving incident light beams, a light emergent surface for guiding the light beams out, a light reflecting surface opposite to the light emergent surface, a first edge surface and a second edge surface which are positioned at two side ends of the light emergent surface, and a tail end surface opposite to the light incident surface, wherein the light incident surface is intersected with the light emergent surface, and the light guide plate is characterized in that: the light guide plate is characterized in that an irregular concave structure, an irregular step-shaped structure or an irregular U-shaped structure is arranged at the intersection of the edge face I or the edge face II and the tail end face, the light inlet face, the light outlet face or the light reflecting face, the irregular concave structure, the irregular step-shaped structure or the irregular U-shaped structure is provided with two side walls which are an A side wall and a B side wall respectively, the A side wall is connected with the light guide plate body, and the farthest distance w1 between the A side wall and the B side wall is larger than 0mm and smaller than 0.5 mm.
2. The light guide plate according to claim 1, wherein: the height h1 of the B side wall is greater than, equal to or less than the A side wall height.
3. The light guide plate according to claim 2, wherein: the height h1 of the B side wall is 0-0.02mm greater than the height h2 of the A side wall.
4. The light guide plate according to claim 1, 2 or 3, wherein: the light reflecting surface is provided with irregular inverted V-shaped bulges or a smooth surface.
5. The light guide plate according to claim 4, wherein: the irregular inverted V-shaped bulge is provided with a wave crest and a wave trough.
6. The light guide plate according to claim 5, wherein: the side wall A is intersected with, tangent to or intersected with one side of the wave crest or the wave trough of the irregular inverted V-shaped bulge, and the other side of the wave crest or the wave trough is tangent.
7. The light guide plate according to claim 6, wherein: the side wall B is a flash, a burr or a scrap edge generated by the exhaust gap and the material injection pressure in the forming process of the light guide plate body.
8. The light guide plate according to claim 6, wherein: the height h1 of the B side wall is 0.01mm greater than the height h2 of the A side wall, and the farthest distance w1 between the A side wall and the B side wall is 0.25 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910466594.8A CN110161619B (en) | 2019-05-30 | 2019-05-30 | Light guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910466594.8A CN110161619B (en) | 2019-05-30 | 2019-05-30 | Light guide plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110161619A CN110161619A (en) | 2019-08-23 |
| CN110161619B true CN110161619B (en) | 2021-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910466594.8A Active CN110161619B (en) | 2019-05-30 | 2019-05-30 | Light guide plate |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101067670A (en) * | 2007-07-09 | 2007-11-07 | 友达光电股份有限公司 | Light conducting plate with irregular micro structure and producing method thereof |
| CN104090327A (en) * | 2014-07-28 | 2014-10-08 | 苏州茂立光电科技有限公司 | Light guide plate with light incident side of conical structure |
| CN104325633A (en) * | 2013-07-22 | 2015-02-04 | 欧姆龙株式会社 | Light guide plate transfer molding method, light guide plate, and planar light source apparatus |
| CN206818905U (en) * | 2017-05-17 | 2017-12-29 | 锦湖光电(深圳)有限公司 | Light guide plate |
| CN209842120U (en) * | 2019-05-30 | 2019-12-24 | 开平市盈光机电科技有限公司 | Light guide plate |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009208352A (en) * | 2008-03-04 | 2009-09-17 | Meiki Co Ltd | Injection compression molding die for thin sheet |
| JP5596416B2 (en) * | 2010-05-27 | 2014-09-24 | 株式会社ジャパンディスプレイ | Liquid crystal display |
-
2019
- 2019-05-30 CN CN201910466594.8A patent/CN110161619B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101067670A (en) * | 2007-07-09 | 2007-11-07 | 友达光电股份有限公司 | Light conducting plate with irregular micro structure and producing method thereof |
| CN104325633A (en) * | 2013-07-22 | 2015-02-04 | 欧姆龙株式会社 | Light guide plate transfer molding method, light guide plate, and planar light source apparatus |
| CN104090327A (en) * | 2014-07-28 | 2014-10-08 | 苏州茂立光电科技有限公司 | Light guide plate with light incident side of conical structure |
| CN206818905U (en) * | 2017-05-17 | 2017-12-29 | 锦湖光电(深圳)有限公司 | Light guide plate |
| CN209842120U (en) * | 2019-05-30 | 2019-12-24 | 开平市盈光机电科技有限公司 | Light guide plate |
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| Publication number | Publication date |
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| CN110161619A (en) | 2019-08-23 |
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