CN101739917B - Positive light advertising board device - Google Patents
Positive light advertising board device Download PDFInfo
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- CN101739917B CN101739917B CN2010101019280A CN201010101928A CN101739917B CN 101739917 B CN101739917 B CN 101739917B CN 2010101019280 A CN2010101019280 A CN 2010101019280A CN 201010101928 A CN201010101928 A CN 201010101928A CN 101739917 B CN101739917 B CN 101739917B
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- light
- guide plate
- light guide
- advertising board
- salient point
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/18—Edge-illuminated signs
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Planar Illumination Modules (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Abstract
The invention discloses a positive light advertising board device, which comprises a light guide plate and an advertising board. At least one end face of the light guide plate is provided with a luminous source, the light guide plate is in gapless contact connection with the surface of the advertising board through a transparent salient point, the total reflection light in the light guide plate is guided to the front surface of the advertising board through the transparent salient point, and the position of the transparent salient point is at a light emission port in the light guide plate. The device is directly contacted with the advertising board in a mode of a light guide point, and can have multi-point precise selective illumination so as to reduce the loss of interface light, reduce the stray light, increase the white-black contrast, improve the optical efficiency and reduce the manufacturing and using costs. The advertising board is replaced by a common advertising board, and the device also can be used as an indoor common illumination lamp such as a desk lamp, a wall lamp and the like.
Description
Technical field
The present invention relates to a kind of positive light advertising board device, especially relate to a kind of advertising and printing thing of daily life small area or positive light advertising board device of LCD liquid crystal panel illumination of being applied to.
Background technology
Common backlight type light illumination mode is the model with the acryl advertising lamp box, be arranged in the lamp box with most fluorescent tubes, with the side plate of semi transparent materials such as atomizing acryl sheet as lamp box, reach and appear a uniform area light source effect, backlight as transparent advertising design or literal, this type of lamp box light backlight is even, gentle, with the environment compatibility height, major defect is that it is low that light reaches advertisement purpose ratio backlight through atomize acryl sheet and advertisement drawing, general daylight lamp tubular type back lighting, its light utilization ratio is only about 10%, belongs to highly energy-consuming, the advertised product of mercurous poison.The outward appearance of box illumination lacks variation, and place, the difficult ornaments flexibly of size are installed, inconvenient maintain internal circuit, and it is big that interior lamp source, reflex housing are provided with shared volume, is difficult for meeting gently, approaches target, and indoor advertisement setting can be covered former luminous intensity distribution and be distributed.High wind is during season, and the outdoor billboard casing incident of hurting sb.'s feelings that drops happens occasionally.
At indoor advanced advertisements board, require attractive in appearancely, avoid veiling glare, energy-conservation, the nontoxic effect that reaches advertisement attracts sight again, the advertising lighting mode of light guidance board type is paid attention to gradually.The advertisement applications of existing photoconduction tabula rasa is listed below: example one, with the pattern drawn in the computing machine, literal after the cutting of colourful transparent paster, " stuck point West Germany " paster as 3M company, be attached to and form light advertising lighting effect backlight or positive on the light guide plate, belong to the product that the box ad production skill of conventional lights combines with light guide plate.Advantage is attractive in appearance, does not take up space, and can possess the characteristic of LED, and shortcoming is that the simple pattern advertising results are only arranged, and large-area uneven illumination is even, generally is applied in indoor directive property and indicates.Example two, with the V groove of monoblock light guide plate with CNC numerical control machine engraving character or image lines, it is remarkably productive that advantage is that the V groove of pattern aligns scattering of light, but its folding of the grooving of different directions, reflected light also have different directivity, uncomfortable what various angle are viewed and admired, and the ratio of parasitic light direct projection eyes is higher, and the pattern of exquisiteness or the expression of color and luster are had its restriction, generally is used for simple deixis.Example three, utilize transparent glue that the advertisement drawing is close on the light guide plate, to reach the positive light advertising board effect of whole print advertisements, but width is reached advertising and printing paper more than the A4, it is bright the periphery promptly to occur, and middle dark inhomogeneous light distributes, during cloth glue, a bubble just produces a lofty bright spot, and its advertisement obviously decays according to effect; Moreover, easily stay cull on the light guide plate, to follow-up l drawing change poles inconvenience more.Example four, recently Korea S Samsung (Samsung) releases ultrathin 42 ", 50 " etc. the LCD TV of large scale LED-backlit, its ultrathin backlight module design is injected light guide plate with led light source from the end face side direction, one side of light guide plate is provided with a plurality of scattering points, the combination distribution of bar, and scatter uniform surface light source through opposite side, be backlight for penetration LCD panel.Obtain being pleasantly surprised and consumer's approval of market after this ultrathin TV is released, but the large-scale LCD backlight module is a product high-accuracy, high unit price, is difficult for being applied in popular advertisement billboard market.Reach the area source characteristic of high uniformity, its production process is that professional with the complicated computer program simulation of optics of wanting suitable designs the light guide plate surface characteristics, as the parameter characteristics such as distribution of light source, scattering point, V groove.Travel to and fro between the correction engineering between design and fabrication, often take the effort of several months.Generally, its light utilization ratio of the illumination of kenel backlight is low, and is about 10 ~ 20%, the difficult control of the homogeneity of large scale area source, and the cost height, size, shape can not satisfy the active characteristic of advertising lighting.
Summary of the invention
The present invention's purpose is to provide a kind of smooth utilization ratio height, and energy consumption is low, and it is little to take up room, positive light advertising board device applied widely.
The present invention's purpose is achieved by the following technical programs: it comprises a light guide plate, a billboard, at least one end face of described light guide plate disposes light emitting source, described light guide plate contacts binding by transparent salient point with no gap, billboard surface, the light of light guide plate inner total reflection is directed to the front of billboard via transparent salient point, and the position of described transparent salient point is the outfall of light in the light guide plate.
Described light emitting source can be LED light emitting diode, laser diode or CCFL cold-cathode tube.
Described LED light emitting diode can be conventional white light LED light emitting diode or the luminous simultaneously or sequentially LED light-emitting diode group for being made of trichromatic ruddiness, green glow, three kinds of LED light emitting diodes of blue light, ruddiness, green glow, the blue light that this LED light-emitting diode group is sent respectively exported a certain proportion of brightness or adopted the quick mode of timesharing (time sharing) in turn and export, input light guide plate inside, this coloured light is entering the light emitting source that the effect of eyes through vision just forms the white light illumination.
Described transparent salient point can adopt net-point printing, spraying, embossing, transfer printing, ultraviolet curing glue or mould molding to be made.
Described transparent salient point both can be produced on the light guide plate, also can be produced on the billboard.
The distribution of described transparent salient point, dot spacing, highly look the art designing and will represent effect and determine no specific limited.Generally, distance can be between between the 0.1mm to 10mm between the site of transparent salient point, and height can be between 50 μ m to 1mm for transparent salient point.
Described billboard can be net-point printing product, digital and electronic printed matter, Electronic Paper billboard or LCD liquid crystal billboard.
The present invention adopts transparent salient point to connect light guide plate and billboard in no gap mode, do not have on light path because of parasitic lights such as reflection that air-gap produced, refractions as urgent, thereby the visuality of picture, comparative is better.
Because described transparent salient point can adopt wire mark, spraying, mode such as digital printed to be produced on billboard or light guide plate surface, make the content that its position can accurate corresponding billboard, as the literal lines etc.Wherein, not influenced by the binding of follow-up l board and light guide plate with the easiest positional precision of reaching of one forming mode of transparent salient point wire mark at promotional literature, thus make things convenient for the explanation of embodiment, but be not limited thereto.Because of transparent salient point is the illumination of microcosmic, audience's finding picture is made of the small colored bright spot of majority, its size, highly, point is apart from the comfort that directly influences picture and presented.Because of described transparent salient point needs no gap to contact binding with light guide plate and billboard surface, before the binding, the deformation that transparent salient point is taken place when height should have 50 μ m through binding at least behind pressing or gummed, still can keep the function of its local light conduction.Far away by 10 meters at place, audience position, then suitable some distance of viewing and admiring billboard should be within 10mm, and in like manner, the 1 meter far away some distance of viewing and admiring billboard should be within 1mm.The export technique site spacing of solid printing ink of existing transparent glazing printing ink such as UV light or epoxy resin can reach the about 0.25mm of 100dpi (dot per inch) at least, so cooperate the printing ink glazing technology can contain closely among the embodiment, as the purpose of viewing and admiring of billboard in the 25cm sections.Following to electronic type high precision, the demand of the positive optical illumination of high resolving power billboard more, when the technology with electronic bill-board manufacturing itself produces salient point, make the pointolite of salient point generation accurately aim at the aperture position of each pixel in the billboard, and as far as possible near pixel layer, increase optic aperture value, be the ratio of aperture area/distance, can effectively increase the utilization factor of light source.
During use, at least one directive property light source forward is injected at least one end face of light guide plate, all the other end faces of light guide plate form the environment of an ideally-reflecting leaded light then with the reflectorized material lining.With refractive index, the acryl optical material of n=1.55 is example (referring to Fig. 2), then from its projectional angle of light source of end face forward projection ± 50 with interior light because of satisfying total reflection condition, continuous reflection in the acryl material and do not have the interface loss finally is full of light guide plate inside.Utilize contacting of transparent salient point that net-point printing makes and light guide plate surface, light can no longer limited described total reflection condition, will release by transparent salient point and according to the part, position of its setting, promptly the advertisement drawing is produced the local precisely function of optical illumination just.Because the body of each transparent salient point and boundary condition are similar, so penetrate the brightness uniformity height that releases individually, distance, the azimuthal influence of light source are small, only be a ratio slowly with the total quantity of the set transparent salient point in a zone, so the vector calculationization of optics emulation is about the scale relation of total quantity in the area, simplify the problem of commonly using light guide plate its spacing and distribution design greatly, be the present invention's one big feature.The advertising man need not to possess the knowledge of optics, adjust number number of site intuitively, i.e. the dutycycle of black and white in the site, the light that just can plan the layout distributes, make design, size, the shape of positive light advertisement billboard lighting more flexible, can personalized, individual change.Each transparent salient point is the bright spot place, be by the advertising man according to bright demand wire mark insert, so the position that control picture illumination takes place under the situation that can precisely not waste fully.Via contacting of transparent salient point and light guide plate surface, the surface of the through advertisement drawing of light or closely be connected to the liquid crystal layer of reflective LCD panel is because of no air gap exists, so that the veiling glare of reflection can be reduced to is minimum, to the effect in the black and white contrast rate generation front of advertising design.
The e-book of quite being watched attentively on the nearest market, screen system adopts pliability Electronic Paper material, and it views and admires the about 20cm～40cm of distance, and the effect of image and LCD panel is identical, be to express lines and pattern with the black and white contrast that reflection of ambient light goes out, commercial demand is that power saving is frivolous for main flow.Because of the non-active illuminating of Electronic Paper, video picture particle itself is light tight, also can't adopt the backlight illumination, and the mat ambient light comes displaying contents, in dim occasion and inapplicable.So the present invention is suitable so that a positive optical illumination method to be provided.Positive in addition optical illumination is applied in reflective panel, still keeps picture clearly under sunburst, can increase the practical occasion of e-book.The light source of illumination be when being good with all band sunshine, and LED belongs to narrow wave band monochromatic source, and the color rendering that therefore promotes LED illumination becomes the important pointer of product.Conventional white light LED system cooperates exciting of its top layer yellow fluorescence coating with blue wave band LED, blends the white light effect but wherein red, green composition is obviously on the low side, color rendering index about 70% with the light of blue, yellow two kinds of wave bands.A new generation's LED-backlit TV has used the backlight of three primary colors, and the ratio of promptly allocating between red, green, blue LED is formed white light source, and its color rendering can reach 90%, but still is subject to the chroma of the built-in colored filter of LCD.More advanced its color correction method of LED projector as the CM200 of 3M company, abandon the idea of colored filter again, high color purity with red, green, blue LED self light source comes direct illumination, become red, green, blue three picture group frames order to manifest fast one picture frame content color separation to spectators, the fast three picture group frames that show are reduced into the effect of white-light illuminating under visual persistence effect, the chroma of this method is expressed the standard that can surmount NTSC, color rendering can reach 120%, the image that is manifested is several to look genuine, and has an opportunity to become very much main product.Above-mentioned color LED flood lighting imaging technique all can cooperate the present invention's positive light advertising board method, is applied to the full-color video picture of Electronic Paper, LCD panel, can significantly promote the following growth of product.More bring into play its frivolous feature of Electronic Paper product, its positive photoconduction tabula rasa also needs frivolous relatively, how to make in the more efficient end face of injecting light guide plate of light source, can use laser is sidelight, the feature that one side laser is easy to focus on can be injected more frivolous light guide plate from end face, and keep the pliability of e-book product, the directional light feature of laser makes flexible light guide plate can bear bigger flexibility and the unlikely light that on the corner leaks simultaneously.
The present invention utilizes different distributions (as ad content), density (changing as brightness), the transparent salient point of size (distributing as regional light) or the combination distribution of dotted line, can produce the exclusive effects of illumination such as even, intensive or textual, can precisely cooperate the design of advertising design, word content, avoid residual polished bard eye, bring into play suitable energy-conservation and appreciation effect, improve the surcharge of product; With positive optical illumination promotional literature, its parasitic light is reduced to minimum, and the light utilization ratio can be increased to 60% of total light easily; It is little to take up room; Applied widely, can satisfy the illumination form of advertising goal activity, the needs of emphasizing or the like as high briliancy, various sizes, difformity, part; Application cost is low.
As billboard is substituted with other billboard, the present invention also can be used as indoor ordinary luminaires such as desk lamp, wall lamp.
Description of drawings
Fig. 1 is that the light of linear light sources is coupled into the interior synoptic diagram of light guide plate;
Fig. 2 is the synoptic diagram that total reflection angle and transparent salient point are derived light;
Fig. 3 is the constitutional diagram that light guide plate utilization salient point branch is equipped with local positive optical illumination ad content;
Fig. 4 be light guide plate use big zone gradually the salient point of layer variations distribute to compensate the constitutional diagram of light LCD billboard just uniformly;
Fig. 5 is the front view of TFT LCD pixel aperture ratio;
Among the figure: 1, linear light sources; 2, light guide plate; 3, end face; 4, reflective paster; 5, transparent salient point; 6, advertisement drawing; 7, transparent salient point coating; 10, reflective LCD panel; 11, transparent salient point coating; 20, the combination of LED area source; 30, the LED area source cooperates the positive light advertising board combination that the reflective LCD panel is formed; 51, specifically printing opacity is partly in the LCD pixel; 52, signal transmission lead in the LCD pixel; 53, TFT driven unit
Embodiment
The invention will be further described below in conjunction with drawings and Examples
With reference to Fig. 1,2,3, present embodiment comprises a linear light sources 1, one light guide plate 2, and light guide plate 2 links advertisement drawing 6 by the 5 surfaces no gap contact of transparent salient point; Light guide plate 2 inner total reflection light are directed to the front of advertisement drawing 6 via transparent salient point 5, the position of transparent salient point 5 is the outfall of light in the light guide plate 2, hold pattern within the distribution coating 7 identical advertisement drawings 6 of transparent salient point, produce the lighting effect that locality is emphasized.
The distribution of described transparent salient point 5, dot spacing, highly look the art designing and will represent effect and changed, there is no specific limited.
Described light guide plate 2 one end faces 31 are provided with linear light sources 1, and all the other end faces 32 are with reflective paster 4 linings; Described linear light sources 1 is arranged by led light source (but being not limited thereto) and is formed.
Described linear light sources 1 is coupled in the light guide plate 2 (referring to Fig. 1) light, and reflective paster 4 is interior to improve light utilization with light reflected back light guide plate 2; LED light closes the light of symbol total reflection angle condition (referring to Fig. 2) after reflecting many times, be filled in the light guide plate 2, can't break away from, and forms the necessary condition of homogeneity illumination of the present invention; Transparent salient point 5 contact light guide plate 2 surfaces, the condition of ATR Optical promptly changes, and partly LED light will penetrate the transparent salient point 5 of contact and shine the object (referring to Fig. 2) of light guide plate 2 outsides, as advertisement drawing 6.Utilize the skill of screen painting that a plurality of small transparent salient points 5 can be set on the surface of advertisement drawing 6 or light guide plate 2.If the type body of each transparent salient point 5, big or small similar, promptly its optics marginal condition (boundary condition) is similar, and with the same area, the photoconduction output of single transparent salient point 5 is extremely close.Whole quantity of illumination design to the advertisement drawing will convert big interregional simple scalar function relation to, need not emulation through complicated optics routine vector get final product general homogeneity, the gradually illumination design (referring to Fig. 3) of feature such as layer gray scale variation or color and luster.Setting with a plurality of small transparent salient point 5 sizes (network No.) and density (DPI) just can determine to design the required illumination of advertising results, is one of the present invention feature.The present invention utilizes the skill of wire mark can make the accurate pattern of 120dpi salient point on drawing, the spacing that is luminous point is 0.22mm, much smaller than the size of industry LED finished product, the present invention expresses the LED product that obviously is better than arranging kenel in cost, manufacturing, maintenance, content; Moreover advertising and printing printing ink also provides abundanter color and luster.The light of light guide plate 2 inside is directed to the front of advertisement drawing 6 fully through transparent salient point 5, with a large amount of luminous point compositions and abundant color and luster be conveyed to audience's eye fine in, wherein will in light guide plate 2, continue reflection without the light of transparent salient point 5 derivation, thus when the present invention's picture is viewed and admired completely without spurious rays.The wire mark design of different densities, different light effects such as generation is even, GTG, an advertisement drawing 6 cheaply, opening the light source back of initiatively throwing light on throws light on non-active different effects is arranged, can express a dynamic demand, for example, can with company's phone or advertising slogan or the like with transparent salient point 5 wire marks on white background, under ambient lighting, be entirely ignorant of its existence; But night is when dark, and after opening light source and initiatively throwing light on, then transparent salient point 5 is transformed into luminous bright spot, white background instead for want of light illumination form dark face, this dual dynamic effect is another big feature of the present invention, in addition, also has characteristics such as easy batch making, construction, replacing advertising and printing object.
With reference to Fig. 4, present embodiment comprises light guide plate 2, reflective LCD panel 10, transparent salient point coating 11 presents for the macroscopic view of the fine transparent salient point that printing on the light guide plate 2 is made, its central authorities are intensive gradually towards loose all around gradually layer effect, can compensate the linear light sources 1 that side direction is injected, form the positive tabula rasa 20 of a uniform LED, forward contact reflex formula LCD panel 10 forms the LCD billboard 30 of the positive optical illumination of a LED again.
Transparent salient point coating 11, wherein transparent salient point entreats the region point spacing to be set at 0.15mm among light guide plate 2, then can get preferable visual effect, dot spacing in light guide plate 2 marginariums is set at 0.30mm, transparent salient point can compensate the decay in sidelight source by a simple gradual distribution, and one evenly soft and be suitable for the positive optical illumination of near-distance reading.
The present invention utilizes a plurality of led light sources (but being not limited thereto) to arrange the linear light sources 1 of formation, the light that it is emitted injects the end face 3 (referring to Fig. 4) of light guide plate 2, light constantly is full of in light guide plate 2 through reflecting, close in the light of total reflection condition in light guide plate 2, can't be penetrated into the external world.Via optics emulation light source is that the characteristic of linear light sources 1, light guide plate 2 is planned the distribution of miniature transparent salient point, can get illumination patterns very uniformly.Successively decrease toward the distribution density of the transparent salient point in marginarium from central area as web plate 11, or number number of adjustment site, it is the dutycycle of black and white in the site, can set easily from the output of the site of 1% to 100% dutycycle, absorb the phenomenon that produces with range attenuation because of the part of transparent salient point with the light of compensatory light 1.
Led light source shines reflective LCD panel 10 in the mode of contact, makes light all inject reflective LCD panel 10 and does not have leakage, so the utilization ratio of light promotes and parasitic light reduction; Because of transparent salient point 5 is that forward closely connects the liquid crystal layer (Liquid Crystal) in the reflective LCD, light will penetrate the sight that liquid crystal layer just enters the audience for the second time with penetrating liquid crystal layer the first time through after reflecting again.Positive its light of optical illumination reflective LCD panel into and out of the path on, will be into and out of twice of all optical module, as liquid crystal layer, colored filtering surface, polarization layer etc., dual shield effectiveness makes LCD the produce image of the LCD of positive optical illumination than back lighting, and its black and white contrast promotes near square doubly.
With reference to Fig. 5, the present invention can be applicable to promote the transmittance of LCD panel integral body, only have in the unit picture element 50 partly is concrete light-permeable, claim pixel openings 51, all the other partly are the moving signal line 52 of the back of the body, the black surround frame, TFT driven unit 53, wherein pixel openings 51 is than the unit area face of this pixel, claim aperture opening ratio, aperture opening ratio only about 60%～70% in High Resolution LCD, manufacture skill with micromirror (MICRO LENS), the baking program that cooperates curvature mirror as ultraviolet curing glue (UV curing glue), miniature transparent salient point 5 is produced on LCD panel 10 top layers, miniature transparent salient point 5 mappings are arranged on pixel (pixel element) opening 51 places, become the 1-1 enantiomorphic relationship with each pixel center of LCD panel 10, then the light in the light guide plate is by transparent salient point 5, and the number percent that enters the light of opening 51 can greatly increase, interlock circuit in the time of so can improving the making of LCD pixel, the covering problem of compartment institute association can promote the flux efficiency of LCD.The technology of micromirror (MICRO LENS) adopts in a large number at CMOS, CCD perceptron and makes, increasing the sensitivity of low-light, but be used in the illumination of positive light LCD or Electronic Paper, brightness is can also to reduce veiling glare increase contrast except that increasing, alleviate the burden of eyesight when reading, have exploitation and be worth.
If with transparent salient point 5 of deflection polarity made and surface of contact thereof, the light that does not then pass the polarization material will reflect back in the light guide plate 2, continue recycling.The LCD panel will more become to oversimplifying and efficient activity under the use of positive optical illumination than existing back lighting.
Claims (8)
1. positive light advertising board device, it is characterized in that, comprise a light guide plate, a billboard, at least one end face of described light guide plate disposes light emitting source, described light guide plate contacts binding by transparent salient point with no gap, billboard surface, the light of light guide plate inner total reflection is directed to the front of billboard via transparent salient point, and the position of described transparent salient point is the outfall of light in the light guide plate;
Described transparent salient point is to adopt net-point printing, spraying, embossing, transfer printing, ultraviolet curing glue or mould molding to be made;
Described transparent stud bump making is on light guide plate or billboard.
2. positive light advertising board device according to claim 1 is characterized in that the dot spacing of described transparent salient point is between between the 0.1mm to 10mm.
3. positive light advertising board device according to claim 1 is characterized in that, the height of described transparent salient point is between 50 μ m to 1mm.
4. positive light advertising board device according to claim 1 is characterized in that, described light emitting source is LED light emitting diode, laser diode or CCFL cold-cathode tube.
5. positive light advertising board device according to claim 4, it is characterized in that described LED light emitting diode is conventional white light LED light emitting diode or the luminous simultaneously or sequentially LED light-emitting diode group that is made of three primary colors ruddiness, green glow, three kinds of LED light emitting diodes of blue light.
6. positive light advertising board device according to claim 1 and 2 is characterized in that, described billboard is net-point printing product, digital and electronic printed matter, Electronic Paper panel or LCD liquid crystal panel.
7. positive light advertising board device according to claim 1 and 2 is characterized in that, described light guide plate is a flexible structure.
8. positive light advertising board device according to claim 3 is characterized in that, described light guide plate is a flexible structure.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101019280A CN101739917B (en) | 2010-01-27 | 2010-01-27 | Positive light advertising board device |
| PCT/CN2010/070443 WO2011091610A1 (en) | 2010-01-27 | 2010-02-01 | Front light billboard device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101019280A CN101739917B (en) | 2010-01-27 | 2010-01-27 | Positive light advertising board device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101739917A CN101739917A (en) | 2010-06-16 |
| CN101739917B true CN101739917B (en) | 2011-12-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101019280A Expired - Fee Related CN101739917B (en) | 2010-01-27 | 2010-01-27 | Positive light advertising board device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101739917B (en) |
| WO (1) | WO2011091610A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103047553A (en) * | 2011-10-17 | 2013-04-17 | 中国科学院福建物质结构研究所 | High-luminous-efficacy high-power light-emitting diode (LED) panel light |
| CN105445846A (en) * | 2015-12-31 | 2016-03-30 | 常州市武进区半导体照明应用技术研究院 | Light guide plate engraved through CNC |
| TWI643164B (en) * | 2017-07-12 | 2018-12-01 | 台灣松下電器股份有限公司 | Light guiding device for an electronic signage |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2332026Y (en) * | 1998-07-28 | 1999-08-04 | 万广辉 | Luminous label |
| IT1310743B1 (en) * | 1999-11-26 | 2002-02-22 | Fiat Ricerche | WHITE LED LIGHT SIGNALING DEVICE. |
| JP2009000903A (en) * | 2007-06-21 | 2009-01-08 | Fujikura Ltd | Writing board |
| CN101388163A (en) * | 2007-09-11 | 2009-03-18 | 富士迈半导体精密工业（上海）有限公司 | Advertisement plate |
| CN101488304A (en) * | 2008-01-16 | 2009-07-22 | 富士迈半导体精密工业（上海）有限公司 | Advertisement board |
-
2010
- 2010-01-27 CN CN2010101019280A patent/CN101739917B/en not_active Expired - Fee Related
- 2010-02-01 WO PCT/CN2010/070443 patent/WO2011091610A1/en active Application Filing
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| Publication number | Publication date |
|---|---|
| WO2011091610A1 (en) | 2011-08-04 |
| CN101739917A (en) | 2010-06-16 |
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