CN103364866A - Light guide plate and manufacturing method thereof - Google Patents
Light guide plate and manufacturing method thereof Download PDFInfo
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- CN103364866A CN103364866A CN2012100926557A CN201210092655A CN103364866A CN 103364866 A CN103364866 A CN 103364866A CN 2012100926557 A CN2012100926557 A CN 2012100926557A CN 201210092655 A CN201210092655 A CN 201210092655A CN 103364866 A CN103364866 A CN 103364866A
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- light
- guide plate
- flat part
- light guide
- thickness
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Abstract
The invention relates to a light guide plate and a manufacturing method thereof. The manufacturing method of the light guide plate comprises the following steps of molding a flat plate through die casting, and arranging the flat plate in a mold; reserving a molding space at the end side of the flat plate in the mold; and ejecting a material into the molding space so as to form a light inlet portion of the light guide plate, wherein the thickness of the light inlet portion is greater than the thickness of the flat plate.
Description
Technical field
The present invention relates to the manufacture method of a kind of light guide plate and light guide plate.
Background technology
Fig. 4 is the schematic diagram of an existing light guide plate.As shown in Figure 4, TaiWan, China patent announcement M294665 number discloses a kind of light guide plate 102 that is used in backlight module 100, and a side of light guide plate 102 forms a teat 104, and the light of light source 106 enters light guide plate 102 by the incidence surface 104a of teat 104.Be formed with light modulation structure 104b on the teat 104, come homogenising to be incident to the light of light guide plate 102.
Other existing design example such as United States Patent (USP) disclose No. 20070031106 and disclose a kind of method of utilizing surface working and the sclerosis of China ink floor to form the light guide plate teat.The TaiWan, China patent announcement discloses a kind of light guide plate injection forming method No. 1236416, can avoid the leaded light microstructure by stained or destruction in the process of forming light guide plate, assembling by the method.
Yet in electronic product today of slimming increasingly, common injection forming method can't obtain the light guide plate of ultra-thin requirement, even method of squeeze forming can obtain ultra-thin light guide plate, but can use without corresponding LED source, therefore be necessary to provide a kind of new method for manufacturing light guide plate, to satisfy nowadays the requirement to the electronic product slimming.
Summary of the invention
The invention provides light guide plate and the method for manufacturing light guide plate of a kind of slimming and high light-emitting uniformity.
Other purposes of the present invention and advantage can be further understood from the disclosed technical characterictic of the present invention.For reaching above-mentioned one or part or all of purpose or other purposes, one of the present invention embodiment provides a kind of method for manufacturing light guide plate, may further comprise the steps: die cast one flat part; Flat part is inserted in the mould, and in mould, reserved the distolateral molding space be positioned at flat part; And with material penetrate to molding space to form a light in part, wherein the thickness of light in part is greater than the thickness of flat part.
In one embodiment, light in part has away from one first side of flat part and in abutting connection with one second side of flat part, and the thickness of light in part by the first side direction the second side decrescence.
In one embodiment, the thickness of light in part is decrescence extremely identical with the thickness of flat part by the first side direction the second side.
In one embodiment, light in part has one second side away from one first side of flat part and contiguous flat part, and a plurality of expansion light microstructure is formed on the first side.Expand the light microstructure and for example can have the cross-sectional shape of arc or irregular curved surface.
In one embodiment, method for manufacturing light guide plate comprises that also cutting flat part makes flat part have a preliminary dimension.
Another embodiment of the present invention provides a kind of light guide plate, comprises a flat part of die cast and a light in part of ejection formation, a distolateral formation light in part of flat part, and wherein the thickness of light in part is greater than the thickness of flat part.
In one embodiment, light in part has away from one first side of flat part and in abutting connection with one second side of flat part, and the thickness of light in part by the first side direction the second side decrescence.
In one embodiment, the thickness of light in part is decrescence extremely identical with the thickness of flat part by the first side direction the second side.
In one embodiment, a plurality of expansion light microstructures are formed on the first side.Expand the light microstructure and for example can have the cross-sectional shape of arc or irregular curved surface.
Design by above-mentioned each embodiment, because light guide plate is consisted of by the flat part of die cast and the light in part of ejection formation, therefore the mode of die cast is easily with large-sized flat part slimming, and the mode of utilizing ejection formation easily forms light in part and expansion light microstructure that thickness thickens, thereby can obtain as thin as a wafer a light guide plate and simultaneously can select the higher light emitting diode of luminescence efficiency, and when penetrating the formation light in part, form simultaneously and expand the light microstructure, can improve light-emitting uniformity.
For above and other purpose of the present invention, feature and advantage can be become apparent, embodiment cited below particularly also cooperates appended graphicly, is described in detail below.
Description of drawings
Figure 1A to Fig. 1 D is the schematic diagram of the method for manufacturing light guide plate of the embodiment of the invention.
Fig. 2 is the schematic diagram of the backlight module of the embodiment of the invention.
Fig. 3 A to Fig. 3 B is the schematic diagram of the expansion light microstructure of different embodiments of the invention.
Fig. 4 is the schematic diagram of existing light guide plate.
[main element symbol description]
10 light guide plate
12 flat part
14 moulds
16 Jet forming machines
18 light in part
18a light in part side
20 backlight modules
22 light sources
24 expand the light microstructure
100 backlight modules
102 light guide plate
104 teats
The 104a incidence surface
104b light modulation structure body
106 light sources
The R molding space
Embodiment
About aforementioned and other technology contents, characteristics and effect of the present invention, in the following detailed description that cooperates with reference to graphic embodiment, can clearly present.The direction term of mentioning in following examples such as: upper and lower, left and right, front or rear etc., only is direction with reference to the accompanying drawings.Therefore, the direction term of use is to illustrate not to be to limit the present invention.
Figure 1A to Fig. 1 D is the schematic diagram according to the method for manufacturing light guide plate of one embodiment of the invention.Shown in Figure 1A, at first utilize the mode of die cast to form a flat part 12, flat part 12 visual actual needs cut out a preliminary dimension.Then, as shown in Figure 1B, flat part 12 is inserted in the mould 14, and be positioned at a distolateral molding space R of flat part 12 in mould 14 interior reservations.Illustrate, molding space R can be formed between a Jet forming machine 16 and the flat part 12, when Jet forming machine 16 penetrates material to molding space R shown in Fig. 1 C, can form a light in part 18, and the size of light in part 18 and profile can be determined by the molding space R that reserves.Shown in Fig. 1 D, light guide plate 10 after the moulding can comprise the flat part 12 of die cast and 18 two parts of light in part of ejection formation, and in the present embodiment, the thickness of light in part 18 can be decrescence extremely roughly the same with the thickness of flat part 12 in abutting connection with a side of flat part 12 by the side direction away from flat part 12.
Fig. 2 is the schematic diagram according to the backlight module 20 of one embodiment of the invention.As shown in Figure 2, in one embodiment, the flat part 12 of light guide plate 10 forms because of the mode of utilizing die cast, therefore for example can have the approximately very narrow thickness of 0.15mm, and the light in part 18 that utilizes injection molding method to form, can arrange in pairs or groups light source 22 size and have larger thickness (maximum ga(u)ge of light in part 18 for example can be about 0.3mm and average thickness greater than the thickness of flat part 12), and light in part 18 is formed with expansion light microstructure 24 towards a side 18a of light source 22, so that the even light effect of light guide plate 10 light inlet sides to be provided.The profile that expands light microstructure 24 does not limit, and for example can have the cross-sectional shape of arc (Fig. 3 A) or irregular curved surface (Fig. 3 B).
Generally speaking, if adopt the mode of ejection formation to consist of the flat part of light guide plate, present emission technology only can reach approximately the thickness about 0.5mm and can't further reduce (thickness reduce namely can't moulding) again, but utilize the mode of die cast then easily with large-sized flat part slimming, and can not be subjected to the up till now restriction of emission technology.Yet, not forming simultaneously the thicker light in part of thickness if directly form thickness flat board as thin as a wafer with the mode of die cast as light guide plate, corresponding spendable light emitting diode kind is less and luminescence efficiency is relatively poor.Therefore, design by above-mentioned each embodiment, because light guide plate is consisted of by the flat part of die cast and the light in part of ejection formation, therefore the mode of die cast is easily with large-sized flat part slimming, and the mode of utilizing ejection formation is easy to form light in part and the expansion light microstructure that thickness thickens, therefore can obtain as thin as a wafer a light guide plate, can select the higher light emitting diode of luminescence efficiency simultaneously, and expand the light microstructure and can improve light-emitting uniformity in penetrating to form simultaneously when forming light in part.
The above, only be the preferred embodiments of the present invention, can not limit scope of the invention process with this, i.e. all simple equivalences of doing according to claims of the present invention and description change and modify, and all still belong in the scope of patent covering of the present invention.Arbitrary embodiment of the present invention or claim must not reached the disclosed whole purposes of the present invention or advantage or characteristics in addition.In addition, summary and denomination of invention only are the usefulness of auxiliary patent document retrieval, are not to limit interest field of the present invention.The terms such as " first " mentioned in this instructions or claims, " second " are only in order to the title of naming element (element) or distinguish different embodiment or scope, and are not the quantitative upper limit of limiting element or lower limit.
Claims (11)
1. a method for manufacturing light guide plate comprises the steps:
Die cast one flat part;
This flat part is inserted in the mould, and in this mould, reserved the distolateral molding space be positioned at this flat part; And
With material penetrate to this molding space to form a light in part, wherein the thickness of this light in part is greater than the thickness of this flat part.
2. method for manufacturing light guide plate as claimed in claim 1 is characterized in that, this light in part has away from one first side of this flat part and in abutting connection with one second side of this flat part, and the thickness of this light in part by this second side of this first side direction decrescence.
3. method for manufacturing light guide plate as claimed in claim 2 is characterized in that, the thickness of this light in part is decrescence extremely identical with the thickness of this flat part by this second side of this first side direction.
4. method for manufacturing light guide plate as claimed in claim 1 is characterized in that, this light in part has one second side away from one first side of this flat part and contiguous this flat part, and a plurality of expansion light microstructure is formed on this first side.
5. method for manufacturing light guide plate as claimed in claim 4 is characterized in that, those expand the light microstructure and have the cross-sectional shape of arc or irregular curved surface.
6. method for manufacturing light guide plate as claimed in claim 5 is characterized in that, also comprises:
Cutting this flat part makes this flat part have a preliminary dimension.
7. a light guide plate comprises a flat part of die cast and a light in part of ejection formation, this light in part of distolateral formation of this flat part, and wherein the thickness of this light in part is greater than the thickness of this flat part.
8. light guide plate as claimed in claim 7 is characterized in that, this light in part has away from one first side of this flat part and in abutting connection with one second side of this flat part, and the thickness of this light in part by this second side of this first side direction decrescence.
9. light guide plate as claimed in claim 8 is characterized in that, the thickness of this light in part is decrescence extremely identical with the thickness of this flat part by this second side of this first side direction.
10. light guide plate as claimed in claim 7 is characterized in that, also comprises:
A plurality of expansion light microstructures, wherein this light in part has away from one first side of this flat part and one second side of contiguous this flat part, and those expansion light microstructures are formed on this first side.
11. light guide plate as claimed in claim 10 is characterized in that, those expand the light microstructure and have the cross-sectional shape of arc or irregular curved surface.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100926557A CN103364866A (en) | 2012-03-29 | 2012-03-29 | Light guide plate and manufacturing method thereof |
| TW101149980A TWI468751B (en) | 2012-03-29 | 2012-12-26 | Light guide plate and fabrication method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100926557A CN103364866A (en) | 2012-03-29 | 2012-03-29 | Light guide plate and manufacturing method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103364866A true CN103364866A (en) | 2013-10-23 |
Family
ID=49366625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100926557A Pending CN103364866A (en) | 2012-03-29 | 2012-03-29 | Light guide plate and manufacturing method thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103364866A (en) |
| TW (1) | TWI468751B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1419155A (en) * | 2001-11-12 | 2003-05-21 | 日本电产科宝株式会社 | Light-guiding board and method for making same |
| US20050248960A1 (en) * | 2002-08-09 | 2005-11-10 | Tomoyoshi Yamashita | Flat light source device |
| US20050254771A1 (en) * | 2002-05-20 | 2005-11-17 | Mitsubishi Rayon Co., Ltd. | Planar light source and light guide for use therein |
| CN201072452Y (en) * | 2006-11-30 | 2008-06-11 | 台湾奈普光电科技股份有限公司 | Mold insert structure of light conducting plate and light conducting plate structure formed by the same |
| CN101885222A (en) * | 2009-05-13 | 2010-11-17 | 鸿富锦精密工业（深圳）有限公司 | Injection molding device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3570777B2 (en) * | 1995-04-11 | 2004-09-29 | 日本写真印刷株式会社 | Manufacturing method of surface emitting device |
| JP4321958B2 (en) * | 2000-09-28 | 2009-08-26 | 山本光学株式会社 | Side light type light guide plate |
| TW448315B (en) * | 2000-10-21 | 2001-08-01 | Unipac Optoelectronics Corp | Light guide plate and manufacturing method thereof |
-
2012
- 2012-03-29 CN CN2012100926557A patent/CN103364866A/en active Pending
- 2012-12-26 TW TW101149980A patent/TWI468751B/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1419155A (en) * | 2001-11-12 | 2003-05-21 | 日本电产科宝株式会社 | Light-guiding board and method for making same |
| US20050254771A1 (en) * | 2002-05-20 | 2005-11-17 | Mitsubishi Rayon Co., Ltd. | Planar light source and light guide for use therein |
| US20050248960A1 (en) * | 2002-08-09 | 2005-11-10 | Tomoyoshi Yamashita | Flat light source device |
| CN201072452Y (en) * | 2006-11-30 | 2008-06-11 | 台湾奈普光电科技股份有限公司 | Mold insert structure of light conducting plate and light conducting plate structure formed by the same |
| CN101885222A (en) * | 2009-05-13 | 2010-11-17 | 鸿富锦精密工业（深圳）有限公司 | Injection molding device |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201339669A (en) | 2013-10-01 |
| TWI468751B (en) | 2015-01-11 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131023 |