CN102374495B - Light guide plate, production method thereof and double-faced pattern display device - Google Patents
Light guide plate, production method thereof and double-faced pattern display device Download PDFInfo
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- CN102374495B CN102374495B CN201010261265.9A CN201010261265A CN102374495B CN 102374495 B CN102374495 B CN 102374495B CN 201010261265 A CN201010261265 A CN 201010261265A CN 102374495 B CN102374495 B CN 102374495B
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Abstract
The invention provides a light guide plate, a production method thereof and a double-faced pattern display device, wherein the light guide plate is provided with a light incidence plane, and comprises a first base plate and a second base plate which are oppositely combined with each other, the first and the second base plates are respectively provided with a combination plane for opposite combination and an emergent plane which is opposite to the combination plane, and fluorescent powder patterns are printed on the combination plane(s) of the first base plate and/or the second base plate. The double-faced pattern display device comprises a base, a light-emitting diode and the light guide plate, wherein the light-emitting diode is fixed on the base, is arranged opposite to the light incidence plane of the light guide plate, and is optically coupled. In the double-faced pattern display device provided in the invention, the patterns are positioned in the light guide plate, so the stability of the device is improved, and because the patterns are produced by fluorescent powder, a double-faced display effect is realized under the action of the light-emitting diode. The production method of the light guide plate adopts a simple technology, has easily-controlled conditions, and is applicable to industrial production.
Description
Technical field
The present invention is specifically related to a kind of light guide plate and preparation method thereof and double-side pattern display device.
Background technology
Utilize the figuratum organic plates of LED light source illumination bands as display card or billboard on the market at present, be widely used in various public place.This billboard-like existing generally comprises light emitting diode and the figuratum light guide plate of band, and advertising design is positioned at light guide plate surface, normally by light guide plate surface engraving texture structure, coating fluorescent powder pattern or arrange that transparent figure obtains.And this structure has following shortcoming, on the one hand, advertising design is positioned at the impact that light guide plate surface is easily subject to external environment, and be easily corroded damage, and stability is good not; On the other hand, this billboard can only demonstrate image clearly in the figuratum one side of tool, and very fuzzy in the display of another side, and under many circumstances, billboard needs the effect reaching double-face show.
Summary of the invention
In view of this, provide a kind of light guide plate, this light guide plate inside is printed with fluorescent powder pattern, improves the stability of pattern, and can realize two-way leaded light.
And a kind of light guide plate preparation method, the method technique is simple, and condition is easily controlled, and suitability for industrialized is produced.
The present invention also provides a kind of double-side pattern display device, and this double-side pattern display device contains above-mentioned light guide plate, effectively improves the stability of pattern, achieves the effect of pattern double-face show.
The present invention solves the problems of the technologies described above adopted technical scheme:
A kind of light guide plate, it has incidence surface, described light guide plate comprises the first substrate and second substrate that relatively combine, described first substrate and second substrate have one respectively for the relative faying face that combines and the exiting surface relative with described faying face, described first substrate and second substrate exiting surface form two relative exiting surfaces of described light guide plate, the faying face of described first substrate and/or second substrate are printed with fluorescent powder pattern.
And a kind of light guide plate preparation method, comprises the steps:
There is provided first substrate and second substrate, described first substrate and second substrate have one respectively for the relative faying face that combines and the exiting surface relative with described faying face;
The faying face of first substrate and/or second substrate prints fluorescent powder pattern;
Combine relative with the faying face of second substrate for the faying face of first substrate, first substrate and second substrate are combined as a whole, obtain described light guide plate.
And, a kind of double-side pattern display device, comprise pedestal, light emitting diode and light guide plate, described light emitting diode to be fixed on pedestal and to be oppositely arranged and optical coupled with the incidence surface of described light guide plate, described light guide plate comprises the first substrate and second substrate that relatively combine, described first substrate and second substrate have one respectively for the relative faying face that combines and the exiting surface relative with described faying face, the faying face of described first substrate and/or second substrate are printed with fluorescent powder pattern.
In described light guide plate, its inside is printed with fluorescent powder pattern, improves the stability of pattern, and can realize two-way leaded light, and this light guide plate preparation method technique is simple, and condition is easily controlled, and suitability for industrialized is produced.Double-side pattern display device provided by the invention, this pattern is positioned at light guide plate inside, improve the stability of double-side pattern display device, one side is avoided to show sharply defined image, the defect that the display of another side is fuzzy, this pattern adopts fluorescent powder to draw, under the effect of light emitting diode, two-sided bright dipping, realizes the effect of double-face show.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the light conducting plate structure schematic diagram of the embodiment of the present invention;
Fig. 2 is the preparation flow of the light guide plate of the embodiment of the present invention 1;
Fig. 3 is the first embodiment structural representation of double-side pattern display device with light guide plate in Fig. 1;
Fig. 4 is pedestal and the LED positions syndeton schematic diagram of the double-side pattern display device of Fig. 3;
Fig. 5 is double-side pattern display device the second embodiment structural representation with light guide plate in Fig. 1.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Fig. 1 display be the light guide plate 2 of the present embodiment, described light guide plate 2 has incidence surface 24, and this incidence surface 24 is at least one side of light guide plate 2.Described light guide plate 2 comprises the first substrate 21 and second substrate 22 that relatively combine, described first substrate 21 and second substrate 22 have and the relative faying face that combines and the exiting surface relative with described faying face respectively, and this first substrate 21 and the exiting surface of second substrate 22 together constitute two relative exiting surfaces 23 of light guide plate 2.The faying face of described first substrate 21 is printed with fluorescent powder pattern 4, fluorescent powder pattern can certainly be printed at the faying face of described second substrate 22, or print fluorescent powder pattern at the faying face of described first substrate 21 and the faying face of second substrate 22 simultaneously.
In Fig. 1, the shape of light guide plate 2 is square, and certainly, its shape can be arranged according to actual needs and flexibly, as being the common geometric configuration such as rectangle, square, rhombus.Fluorescent powder pattern 4 design example is as being " IOI ", certainly flexible design other any patterns can also be become according to actual needs, wherein, in fluorescent powder pattern 4, fluorescent powder is to be optically excited the fluorescent powder sending at least one color, as in pattern 4, letter " I " adopts the fluorescent powder of glow green, letter " O " adopts the fluorescent powder of burn red.
When the two junction of first substrate 21 combination relative to second substrate 22 is all printed with fluorescent powder pattern 4, and the fluorescent powder pattern 4 that two junction is printed respectively is not identical when mismatching again, the fluorescent powder pattern 4 that two junction is printed respectively preferably staggers printing, avoid under the exciting of light, neither identical unmatched fluorescent powder pattern 4 overlap again display.The fluorescent powder pattern 4 all printed of the two junction relatively combined when first substrate 21 and second substrate 22 is neither identical to mismatch again, and during the printing of fluorescent powder pattern 4 overlap, between the two junction that relatively can combine at first substrate 21 and second substrate 22, the reflection configurations such as a two-sided reflective reflector are set, the fluorescent powder pattern 4 making two of two overlaps to print respectively is on the surface separately display under the exciting of light, thus effectively avoids neither identical unmatched fluorescent powder pattern 4 overlap again display.
The material of first substrate 21 and second substrate 22 is preferably unorganic glass, organic glass, resin or silica gel.
This light guide plate 2 inside is printed with fluorescent powder pattern 4, improves the stability of pattern 4, and can realize two-way leaded light.
The present embodiment additionally provides light guide plate 2 preparation method in above-mentioned double-side pattern display device, as shown in Figure 2, comprises the steps:
S1. provide first substrate and second substrate (not drawing in second substrate Fig. 2), described first substrate and second substrate have one respectively for the relative faying face that combines and the exiting surface relative with described faying face; First, second substrate 21 and 22 that the present embodiment provides is identical, and therefore Fig. 2 demonstrates one block of plate, in other embodiments, when first, second substrate 21 is not identical with 22, provides respectively and makes first, second substrate 21 and 22.
S2. on the faying face of first substrate and/or second substrate, fluorescent powder pattern 4 is printed;
S3. combine relative with the faying face of second substrate 22 for the faying face of first substrate 21, first substrate 21 and second substrate 22 are combined as a whole, obtain described light guide plate 2.
First substrate 21 in the S1 step of above-mentioned light guide plate 2 preparation method and the aspect such as the structure of second substrate 22 and material, with above about the description content of light guide plate 2, do not repeat them here.
In the S2 step of above-mentioned light guide plate 2 preparation method, described printing fluorescent powder pattern 4 preferably adopts the method for serigraphy to print fluorescent powder pattern 4, the fluorescent powder pattern of different colours can be printed several times, this pattern can become the pattern of any actual needs according to flexible design, concrete as above about the description content of light guide plate 2.
In the S3 step of above-mentioned light guide plate 2 preparation method, described first substrate 21 adopts with the combination of second substrate 22 and solidifies or thermoplastic combination.Described solidification combination refers to and is positioned in mould by the first substrate 21 or second substrate 22 that have printing fluorescent powder pattern 4 on faying face, on the faying face being printed with fluorescent powder pattern 4, molten condition raw substrate is poured into again in mould, another substrate is obtained after cooling, sizing, the demoulding, it is incorporated into and is first placed on the substrate faying face of mould, is integrated with the substrate junction being placed in mould in advance.Now first substrate 21 and second substrate 22 are combined as a whole by solidification, form the inner light guide plate 2 containing fluorescent powder pattern 4.Wherein, this mould size is preferably equal with the substrate be positioned in mould, and molten condition raw substrate is preferably the material that unorganic glass described above, organic glass, resin or silica gel etc. have high light transmission rate.
Described thermoplastic combination refers to after relative with the two junction of second substrate 22 for first substrate 21 laminating, and heat first substrate 21 and second substrate 22, at least make two junction be subject to thermal softening, thus first substrate 21 and second substrate 22 are combined as a whole, form light guide plate 2.
The combination of light guide plate 2 is not limited to following two kinds, after bonding, the exiting surface of first substrate 21 and the exiting surface of second substrate 22 together constitute two exiting surfaces 23 of light guide plate 2, the faying face of first substrate 21 and the faying face of second substrate 22 fit into one, constitute the faying face 25 of light guide plate 2, the side of first substrate 21 and the side of second substrate 22 together constitute the side of light guide plate 2, and one side or many sides constitute the incidence surface 24 of light guide plate 2.
After above-mentioned first substrate 21 is combined as a whole with second substrate 22, formed inner containing after the light guide plate 2 of fluorescent powder pattern 4, surface finish process can also be carried out to light guide plate 2, such as, surface finish process be carried out to two exiting surfaces and/or incidence surface, thus increase the transmitance of light.
In the S3 step of above-mentioned light guide plate 2 preparation method, two junction in order to avoid first substrate 21 combination relative to second substrate 22 is all printed with the display of fluorescent powder pattern 4 overlap, a two-sided reflective reflector can be set on the faying face of first substrate 21 or second substrate 22, then first substrate 21 and second substrate 22 be adopted solidification or thermoplastic combination to be combined as a whole.
This light guide plate 2 preparation method makes light guide plate form pattern by printing fluorescent powder, and then be combined with each other, whole technique is simple, and condition is easily controlled, and suitability for industrialized is produced.
Fig. 3 display be the double-side pattern display device of the present embodiment, comprise pedestal 1, be fixed on light emitting diode on pedestal 13 (with reference to Fig. 4) and above-mentioned light guide plate 2, light emitting diode 3 to be fixed on pedestal 1 and to be oppositely arranged and optical coupled with the incidence surface of light guide plate 2.The incidence surface of this light guide plate 2 is the side of light guide plate 2.
Fig. 4 display be pedestal 1 and the light emitting diode 3 position syndeton schematic diagram of the double-side pattern display device of Fig. 3, the just wherein a kind of set-up mode of light emitting diode 3 on pedestal 1 of its display, the present invention is not limited to this kind of set-up mode.Particularly, this pedestal 1 comprises groove 11, and light emitting diode 3 is arranged in the groove 11 of pedestal 1.The shape of this pedestal 1 can be arranged according to actual needs and flexibly, as being the common geometric configuration such as rectangle, square, rhombus, the shape of this groove 11 should be corresponding with the incidence surface of light guide plate 2, light emitting diode 3 arrangement mode is in a groove corresponding with the incidence surface of light guide plate 2, and the arrangement of light emitting diode 3 should make its light launched be uniformly distributed in the incidence surface of light guide plate 2 as far as possible.
Composition graphs 1,3,4 known, the incidence surface 24 of this light guide plate 2 is the side of light guide plate 2, and each side relative with light emitting diode 3 is an incidence surface.A corresponding side and the incidence surface 24 of light emitting diode 3 and light guide plate 2 are oppositely arranged, this incidence surface 24 optical coupled of light emitting diode 3 and light guide plate 2.Certainly, light emitting diode 3 also can be divided into many groups according to the actual needs, more than 2 side and multiple incidence surface are oppositely arranged with light guide plate accordingly, and accordingly with multiple incidence surface optical coupled of light guide plate 2, thus strengthen illumination effect and the intensity of fluorescent powder pattern 4 in light guide plate 2.
As shown in Figure 5, relative two sides of light guide plate 2 are respectively equipped with pedestal 1, the relative two sides of this light guide plate 2 and two groups of light emitting diodes 3 are separately positioned in the groove of two pedestals 1, two groups of light emitting diodes 3 are oppositely arranged with the relative two sides of light guide plate 2 and incidence surface 24 respectively, respectively with two incidence surface 24 optical coupled of light guide plate 2.
Pedestal 1 material in Fig. 1 to Fig. 5 is the material that advertisement field is conventional, as metal, plastics etc.As mentioned above, first substrate 21 in light guide plate 2 and second substrate 22 material are preferably the material that unorganic glass, organic glass, resin or silica gel etc. have high light transmission rate, first substrate 21 and second substrate 22 are combined as a whole by solidification or thermoplastic, the shape of light guide plate 2 can be according to actual needs, harmonize flexibly as advertisement design, can be rectangle, the geometric form that square, rhombus or circle etc. are common, also can be leaf-shaped or irregular shape etc.Light emitting diode 3 is arranged in the groove of pedestal 1, and its glow color is not limit, and can harmonize flexibly according to actual needs, as it can be ultraviolet light-emitting diode, or the light emitting diode of visible ray section.Be arranged between first substrate 21 and second substrate 22 and that is to say that the fluorescent powder pattern 4 of light guide plate 2 inside is decided according to the actual requirements, fluorescent powder is the fluorescent powder at least with a kind of glow color that applicable light emitting diode excites, to realize display and the advertising results of one or more colors.
In above-mentioned double-side pattern display device, it is inner that fluorescent powder pattern 4 is positioned at light guide plate 2, promote the stability of double-side pattern display device, one side is avoided to show sharply defined image, the defect that the display of another side is fuzzy, this pattern adopts fluorescent powder to draw, under the effect of light emitting diode 3, two-sided bright dipping, realizes the effect of the double-face show of double-side pattern display device.
Because above-mentioned double-side pattern display device stability is good, can realize the effect of double-face show, therefore, this double-side pattern display device may be used for the billboard or direction board etc. that are made into double-sided display.
The preparation method of double-side pattern display device and light guide plate 2 is illustrated below by way of Multi-instance, and the aspect such as its performance.
Embodiment 1
Preparation is inner has the technological process of the PMMA light guide plate 2 of fluorescent powder pattern as shown in Figure 2.Select one piece of thickness to be the rectangle PMMA thin plate 21 of 10mm, adopt the method for serigraphy on PMMA thin plate, to print " IOI " figure 4 at twice, first time adopts green emitting phosphor BaMgAl
10o
17: Eu
3+: Mn
2+print two letters " I ", second time adopts red fluorescence powder Y
2o
2s:Eu
3+printed character " O ", so just obtain the fluorescent powder pattern 4 with different colours, then PMMA thin plate is put into its equal and opposite in direction but there is the mould of certain depth, separately in conical flask, add methyl methacrylate monomer 10g and initiating agent Oxybenzene methane 12mg, heating water bath, obtain pre-polymerization liquid, then pre-polymerization liquid is poured in mould, seal with preservative film, with air exclusion, the baking oven that mould puts into 40 degree makes monomer polymerization 24 hours, then 100 degrees Celsius of process 1 hour, on thin plate, another layer of PMMA polymkeric substance 22 is just defined after the demoulding, a block is fused into PMMA thin plate.Two plane faces of polishing PMMA block and at least one side, just obtain the PMMA light guide plate 2 that inside has fluorescent powder pattern 4.Fig. 1 is the structural representation of the present embodiment double-side pattern display device, after obtaining inside there is the PMMA light guide plate 2 of fluorescent powder pattern 4, make corresponding pedestal 1, pedestal 1 arranges the parallel ultraviolet light-emitting diode of a row 3, then light guide plate 2 is vertically fixed on pedestal 1, and makes light guide plate 2 side relative to light emitting diode 3 optics to realize optical coupled.
Embodiment 2
Adopt the glass 21 of sodium borosilicate system, glass-cutting is become disc-shaped, THICKNESS CONTROL is at 2mm, the method of serigraphy is adopted to print " ^_^ " pattern in Na20-B203-Si02 glass one plane, fluorescent powder adopts yellow YAG:Ce fluorescent powder, another glass plate 22 that a planar design has " 103 " is placed again on the top of fluorescent powder pattern, print figuratum plane respectively relatively to combine two, and " 103 " pattern of " ^_^ " pattern of Na20-B203-Si02 glass one planographic and another glass plate one planographic staggers and prints, they are put into high-temperature electric resistance furnace, temperature is set to 530 degrees Celsius, be incubated 60 minutes, two glass plates are softened and makes lower-glass 21, 22 light guide plate be combined as a whole 2.Two plane faces of polished glass light guide plate 2, and light guide plate 2 is polished into circle, polishing light guide plate 2 side simultaneously, adopt the corresponding pedestal 1 of method design of similar embodiment 1, and multiple blue light-emitting diode 3 is set at pedestal 1, just obtain double-side pattern display device after assembling is fixing, and the billboard of this double-side pattern display device as double-face show is used.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. a light guide plate, it has incidence surface, it is characterized in that: described light guide plate comprises the first substrate and second substrate that relatively combine, described first substrate and second substrate have one respectively for the relative faying face that combines and the exiting surface relative with described faying face, described first substrate and second substrate exiting surface form two relative exiting surfaces of described light guide plate, the faying face of described first substrate and/or second substrate is printed with fluorescent powder pattern, described first substrate and the associated methods of second substrate are by after relative for the two junction of described first substrate and second substrate laminating, and heat described first substrate and second substrate, two junction is at least made to be subject to thermal softening, thus described first substrate and second substrate are combined as a whole, described temperature of being heated is 530 degrees Celsius, be incubated 60 minutes, also a double-face reflecting panel is provided with between the faying face that described first substrate and second substrate combine relatively.
2. light guide plate according to claim 1, is characterized in that: the material of described first substrate and second substrate is Na20-B203-Si02 glass.
3. a method for manufacturing light guide plate, comprises the steps:
There is provided first substrate and second substrate, described first substrate and second substrate have one respectively for the relative faying face that combines and the exiting surface relative with described faying face;
The faying face of first substrate and/or second substrate prints fluorescent powder pattern;
After relative with the two junction of second substrate for described first substrate laminating, and heat described first substrate and second substrate, two junction is at least made to be subject to thermal softening, thus described first substrate and second substrate are combined as a whole, obtain described light guide plate, described temperature of being heated is 530 degrees Celsius, is incubated 60 minutes;
Between the faying face that described first substrate and second substrate combine relatively, a double-face reflecting panel is set.
4. light guide plate preparation method according to claim 3, is characterized in that: described fluorescent powder pattern adopts silk screen print method to print.
5. light guide plate preparation method according to claim 3, is characterized in that: after described first substrate and second substrate are combined as a whole, and also comprises the polishing of light guide plate exiting surface.
6. a double-side pattern display device, comprise pedestal, light emitting diode and light guide plate, it is characterized in that: described light emitting diode to be fixed on pedestal and to be oppositely arranged and optical coupled with the incidence surface of described light guide plate, described light guide plate comprises the first substrate and second substrate that relatively combine, described first substrate and second substrate have one respectively for the relative faying face that combines and the exiting surface relative with described faying face, the faying face of described first substrate and/or second substrate is printed with fluorescent powder pattern, described first substrate and the combination of second substrate are by after relative for the two junction of described first substrate and second substrate laminating, and heat described first substrate and second substrate, two junction is at least made to be subject to thermal softening, thus described first substrate and second substrate are combined as a whole, described temperature of being heated is 530 degrees Celsius, be incubated 60 minutes, also a double-face reflecting panel is provided with between the faying face that described first substrate and second substrate combine relatively.
7. double-side pattern display device according to claim 6, it is characterized in that: described pedestal also comprises groove, described light emitting diode is arranged in the groove of pedestal.
8. double-side pattern display device according to claim 6, is characterized in that: the incidence surface of described light guide plate is at least one side of light guide plate.
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| CN201010261265.9A CN102374495B (en) | 2010-08-24 | 2010-08-24 | Light guide plate, production method thereof and double-faced pattern display device |
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| CN201010261265.9A CN102374495B (en) | 2010-08-24 | 2010-08-24 | Light guide plate, production method thereof and double-faced pattern display device |
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| CN104007506B (en) * | 2014-06-17 | 2015-07-22 | 台州市伊悦尼塑模有限公司 | Technology method of light guide plate or light guide bar for daytime running light |
| CN104835427A (en) * | 2015-06-06 | 2015-08-12 | 北京环洋经典展柜制造有限公司 | Crystal mirror surface locally transparent double-sided light emitting LOGO display board |
| CN104835426A (en) * | 2015-06-06 | 2015-08-12 | 北京环洋经典展柜制造有限公司 | Crystal mirror surface double-sided light emitting LOGO display board |
| CN105044816A (en) * | 2015-08-19 | 2015-11-11 | 广州创维平面显示科技有限公司 | Novel light guide plate and manufacturing method thereof |
| CN105700242B (en) * | 2016-04-29 | 2019-04-05 | 深圳市华星光电技术有限公司 | Backlight module and double-sided liquid crystal display device |
| CN107346647A (en) * | 2017-07-07 | 2017-11-14 | 厦门大学嘉庚学院 | A kind of laser graphics display methods |
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| JP2004226437A (en) * | 2003-01-20 | 2004-08-12 | Shinei Screen Co Ltd | Screen printing display device |
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|---|---|---|---|---|
| CN1392834A (en) * | 2000-08-18 | 2003-01-22 | 帝人化成株式会社 | Sheet-form layered structure with attractive apperance and utilziation thereof |
| CN1380576A (en) * | 2001-04-06 | 2002-11-20 | 日东电工株式会社 | Polaroid, optical film and liquid crystal display using polaroid |
| JP2004226437A (en) * | 2003-01-20 | 2004-08-12 | Shinei Screen Co Ltd | Screen printing display device |
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| CN102374495A (en) | 2012-03-14 |
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