CN101109833A - Light guiding plate - Google Patents
Light guiding plate Download PDFInfo
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- CN101109833A CN101109833A CNA2007100043100A CN200710004310A CN101109833A CN 101109833 A CN101109833 A CN 101109833A CN A2007100043100 A CNA2007100043100 A CN A2007100043100A CN 200710004310 A CN200710004310 A CN 200710004310A CN 101109833 A CN101109833 A CN 101109833A
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- Prior art keywords
- light guide
- light
- guide plate
- guide structure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/22—Illumination; Arrangements for improving the visibility of characters on dials
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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
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0016—Grooves, prisms, gratings, scattering particles or rough surfaces
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Planar Illumination Modules (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
The present invention discloses a light guiding system, which is applied to a portable or handheld device having at least a keying unit and at least an illuminator. The light guiding system includes a light guiding structure; at least a coupling portion for coupling with a corresponding keying unit of the portable device; at least an incident portion for receiving incident light generated by illuminator; and at least a light guiding portion.
Description
Technical field
The present invention has the light guide plate that a push-button unit also has hand held (portable) device of a luminaire at least about a kind of being applied to especially at least about a kind of light guide plate.
Background technology
Hand held (portable) electronic installation such as industrial fields such as video conferences such as mp3 player, mobile phone, PDA(Personal Digital Assistant) and telepilot, information, communication, family expenses and consumer has become a part indispensable in the daily life now, yet always makes us puzzlement sometimes when the occasion of insufficient light need be used this device.Can under the situation of insufficient light, use this hand held (portable) electronic installation for asking, or in order to promote these Design of device, increasing light source on these portable electronic devices is current main development trend.
The light source of general hand held (portable) electronic installation adopts light emitting diode (LED) mostly, and utilizes the light guide plate transmission light source that LED produced.In addition, because the light source of LED is the pointolite form, therefore, how the led light source that single-point is luminous diffuses to whole face equably causes brightness evenly to distribute, it is the main challenge that present technology faces, and this subject under discussion for example is suggested in No. the 5th, 083,240, the United States Patent (USP) case in relevant patented technology.
In United States Patent (USP) case the 5th, 083, in No. 240, this patent is, each side of light guide structure in light guide plate is provided with a plurality of V-arrangement leaded light grooves, below this light guide structure bottom surface, a plurality of led light sources are set then, and the corresponding a plurality of led light sources in this light guide structure bottom surface place is provided with convex lens, for the light of this light source of reflection.Yet, in this patented technology, use this kind light guide plate and need use a plurality of LED, so cost is higher and power consumption is bigger.Simultaneously, make, so cause production cost to improve because convex lens are difficult.In addition, because light source is positioned at the light guide plate below, this kind configuration also will increase the integral thickness of device relatively, and be unfavorable for miniaturization.
In addition, because United States Patent (USP) case the 5th, 083, No. 240 patented technology must form the reverberator of groove shape around the boundary of this light guide plate, and corner cut is to reflect some light, so the light guide plate of class is difficult to make, can only be fit to special type, be difficult to be applied to other device, thereby make complicate fabrication process, increase production cost, and dwindled the scope of its industry application and miniaturization.In addition, owing to only directly send from this light source below, the 5th, 083, No. 240 employed these type of luminescence methods of United States Patent (USP) case are direct-injection type (directed-lighting), and it mainly can cause hot spot-effect and excessively luminous.With the configuration of No. the 5th, 083,240, United States Patent (USP) case, light will concentrate on No. the 5th, 083,240, United States Patent (USP) case this light guide plate the central area and cause the too high and hot spot-effect of brightness, and almost do not have luminous energy to arrive the outer peripheral areas of this light guide plate.
Because prior art exists can't be luminous, brightness irregularities, complex structure, be difficult to make, cost is higher and do not have problem such as industrial utilization, therefore, improve this light guide plate as the structure that how simply is easy to make, cause brightness evenly to distribute, together with reaching low-cost and promoting industrial utilization, be the problem that present industry is desired most ardently solution.For a long time, the solution of these problems continues not have separates, and the scheme that those skilled in the art are seeking to address these problems all the time.
Summary of the invention
The shortcoming of prior art in view of the above, fundamental purpose of the present invention provides a kind of light guide plate, in order to the brightness of the push-button unit of lifting gear.
Another object of the present invention provides a kind of uniform more light guide plate of distribution of light that makes device.
Another purpose of the present invention provides a kind of light guide plate that can reduce light source use and low-energy-consumption.
Another purpose of the present invention provides a kind of simple in structure and light guide plate that production cost is reduced of being easy to make.
Another purpose of the present invention provides a kind of low price light guide plate that extensively reaches various industrial utilization that has.
According to aforementioned and other purpose, the invention provides a kind of light guide plate that can be applied to any device, it is mainly used in any hand held (portable) device, telepilot for example, keyboard, mouse, earphone, mobile phone, desktop telephone, wireless telephone, game console, the recreation rocking bar, the hand held device for image, the hand held audio unit, counter, PDA(Personal Digital Assistant), locking device, warning system and safety system, it has a push-button unit at least and has a luminaire at least, so that can seeing through this light guide plate, the light that this luminaire produced is delivered to push-button unit, to illuminate the push-button unit of this device.This light guide plate comprises: light guide structure; At least one coupling part is in order to the corresponding push-button unit of this palmtop device that is coupled; At least one light in part is in order to receive the incident light that luminaire produced; And at least one light guide section, in order to even directing light to this coupling part.
In aforesaid light guide plate, light guide structure can be the flat board of flat board, enlarging flat board, plate wedge, an end reducing, respectively hold flat board, an end wedge shape of reducing flat board, and respectively hold one of them of flat board of wedge shape.For preferred embodiment, this light guide structure is made by any transparent material.For example, this light guide structure can be made by a wherein material of the group that potpourri is formed of glass, plastics, polycarbonate (PC), polymethylmethacrylate (PMMA), polystyrene (PS), polyamide (PA), methyl methacrylate-styrene (MS), polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polypropylene (PP), Polyvinylchloride (PVC), acrylonitrile-butadiene-styrene resin (ABS), tygon (PE) and above-mentioned material.Moreover, this light guide plate can be passed through physical technologies such as grinding, cutting or facet and be handled, or by the processing of chemical technologies such as coating, sputter or chemical vapor deposition, make this light guide plate light guide structure after treatment, can improve the refraction and/or the reflection of light, or reach total reflection.Yet, it should be noted that any physics or chemical technology that can make this light guide structure that is subject to processing produce this type of effect all can use.
Moreover the light in part of this light guide plate also has prism.In addition, this light in part can be planar-shaped, circular arc, triangle, equilateral triangle, del, polygon, convex, spill, waveform, V-arrangement, W shape and trapezoidal one of them of group formed.Yet the shape of this light in part and size can change, and do not exceed with description and explanation at this.In a preferred embodiment, this light in part can be the perforate that runs through this light guide plate.In another preferred embodiment, this light in part can be a groove of being located at this a light guide structure bottom surface or a side.In another preferred embodiment, this light in part can be located at a side of this coupling part.
In addition, this light guide plate can be further combined with the shading member, and wherein this shading member can be made by a wherein material of glass, plastics, polycarbonate (PC), polymethylmethacrylate (PMMA), polystyrene (PS), polyamide (PA), methyl methacrylate-styrene (MS), polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polypropylene (PP), Polyvinylchloride (PVC), acrylonitrile-butadiene-styrene resin (ABS), tygon (PE) and above-mentioned material group that potpourri is formed.Preferably, this shading member by absorptivity greater than 50% and/or the material of high light reflectivity made.This shading member also comprises having sticky material at least on surface thereof.This shading member is one of them of single face gum or two-sided gum.In another preferred embodiment, the light guide structure of this light guide plate also comprises single order portion structure at least, wherein this rank portion structure and this shading member coupling.In addition, this rank portion structure has the light guide structure of at least two component levels in light guide plate, wherein goes up the apical side height on rank and the different thickness Y that are this shading member of the apical side height on following rank.
In addition, at least one coupling part can be perforate, and at least one light guide section can be the polygon perforate.The size of this coupling part is to accept the corresponding key unit of this device by suitable assembling.In a preferred embodiment, this light guide structure also can be made multi-form light guide section according to need.For example, this light guide section can be triangle, rectangle, circle or polygon.In other words, the light guide structure of this light guide plate can have difform light guide section, makes to have at least two to form difform light guide section.Preferably, the sidewall surfaces of this light guide section can be one of them of flat surfaces, arc-shaped surface, concave surface, convex surface, pointed surface, waveform surface, grid shape surface and free shape group that the surface is formed, and wherein at least one light guide section has at least two difform sidewalls.In one embodiment, the part of the sidewall of this light guide section is a concave surface disperseing incident light, and the other parts of this sidewall are that convex surface is to concentrate incident light.In another embodiment, at least one sidewall of at least one light guide section can further apply the material of at least two different refractivities, or reflecting material.For example, the part of the sidewall of this light guide section can be coated with one deck high-index material or reflecting material, and the other parts of this sidewall then can be coated with one deck low-index material.
In the present invention, be provided with and have a plurality of polygon light guide sections with light guide plate with light refraction/total reflection.Therefore, by the advantageous properties of this light guide section, each coupling part is evenly guided and be distributed to the light that LED directly can be sent.Thus, light can concentrate on required light emitting region (each coupling part) respectively, and good beam split/spotlight effect can be provided, and causes to eliminate prior art that light is inhomogeneous, the disappearance of light leak, promotes the even brightness purpose and can reach.In addition, using the present invention can replace the labyrinth of prior art and to reach brightness even with simplified structure, can overcome relatively in the prior art be difficult for such as making, cost is higher and be unfavorable for the problem that industry is utilized.In other words, the present invention there is no the puzzlement that prior art is difficult to produce, and therefore can reduce production costs and enlarge its industry application.
So it is even that this light guide plate of the present invention can not only reach brightness, more can accomplish and be easy to and produce to have lower production cost and can be widely used in industry simple in structure.In other words, this light guide plate of the present invention can overcome the problem that prior art is derived.
Remove above-mentioned institute and carry, some embodiment of the present invention still has other form.These forms can become by as detailed below and with reference to accompanying drawing and highlight more for haveing the knack of this technical field person.
Description of drawings
Fig. 1 is the schematic configuration diagram of the light guide plate of first preferred embodiment of the present invention;
Fig. 2 A to Fig. 2 C is the schematic configuration diagram of light guide section according to a first advantageous embodiment of the invention;
Fig. 3 is the schematic configuration diagram of light guide plate according to a second, preferred embodiment of the present invention;
Fig. 4 A to Fig. 4 B is the sectional view of the structure described in Fig. 3, the sectional view after wherein the AA section cuts in Fig. 4 A displayed map 3, and the synoptic diagram of Fig. 4 B after to be displayed map 4A partly amplify;
Fig. 5 A to Fig. 5 E is the schematic configuration diagram according to the light guide plate of the 3rd preferred embodiment of the present invention;
Fig. 6 A to Fig. 6 H is in illustrating according to a preferred embodiment of the invention, at each signal enlarged drawing through the light in part of modification of light guide plate; And
Fig. 7 A to Fig. 7 E is the side view that shows the light guide structure of light guide plate according to a preferred embodiment of the invention.
The primary clustering symbol description
1 light guide plate
3,3 ' luminaire
11 light guide structures
13 coupling parts
15 light guide sections
111,111 ' light in part
113,113 ', 113 " shading member
115 rank portion structures
151 planes
153 arc surfaces
155 free form surfaces
The incidence point of the incident light that D sends from this luminaire 3 ' is to the distance between the end face of this light guide structure 11
The last rank end face of X, Y rank portion structure and the difference in height between the end face of this time rank
Embodiment
Below the embodiment by fully describing in detail makes and uses the present invention so that have the knack of this technical field person.Should understand based on this announcement, other embodiment also is obviously, and is not breaking away from the correction that can do under the category of the present invention on the details.
In following narration, many details are in order to complete understanding the present invention to be provided.Yet the present invention also can implement and must these specific detail obviously.For asking the present invention that avoids confusion, assembling that some are known and process steps be not just in this announcement.
Similarly, the accompanying drawing that shows the embodiment of this structure is part diagram and not to scale (NTS), and on some space, do especially clear describe with and be illustrated on the accompanying drawing large.Similarly, for asking simple description, the visual field on the accompanying drawing shows similar orientation usually, and this kind is described in that major part is changeable on the accompanying drawing.Generally speaking, the present invention can be with any orientation operation.
With regard to illustration purpose, " level " is to be defined as plane or the surface of plane parallel in substrate as used herein, do not consider its orientation.And " vertically " be meant perpendicular to the direction of level of described definition.Other term for example " ... on ", " in ... top ", " in ... below ", " end ", " top ", " side " (for example sidewall), " higher ", " lower ", " on ", " ... top " reach " and ... following " be to be defined as with respect to this horizontal plane.
The following example uses palmtop device, and it has a plurality of push-button units and at least one can illuminate the light source of this device, and this push-button unit purpose usefulness for illustrative purposes only, so the present invention should not be subject to this and describes and illustrate.
First embodiment
In first embodiment, as shown in Figure 1, light guide plate 1 is installed on the palmtop device of have a plurality of push-button units (not icon) and a plurality of luminaire 3, makes the incident optical energy that is produced by this luminaire 3 transmit and be distributed to each push-button unit by using this light guide plate 1.Moreover this push-button unit can simultaneously come out from the shell of this palmtop device.In this embodiment, this light guide plate 1 comprises light guide structure 11, is located in this light guide structure 11 a plurality of coupling parts 13 in order to coupling corresponding key unit, at least one is in order to the light in part 111 of the incident light accepting this luminaire and produce and in order to guide a plurality of light guide sections 15 of this incident light to each coupling part 13.
The light guide structure 11 of this light guide plate 1 is by the material of high transmission rate, as resin, rubber, glass, plastics, polysilicon, polysilane, polycarbonate (PC), polymethylmethacrylate (PMMA), polystyrene (PS), polyamide (PA), methyl methacrylate-styrene (MS), polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polypropylene (PP), Polyvinylchloride (PVC), acrylonitrile-butadiene-styrene resin (ABS), tygon (PE), a wherein material of group that phenolics (PF) and composition thereof is formed is made.Preferably, this light guide structure 11 is made by the high light transmittance material, for example plastics, glass material etc.In this embodiment, this light guide structure 11 is rectangles, and wherein the thickness of this light guide structure 11 is more than or equal to the thickness of each this luminaire 3, but is not as limit.This light guide structure 11 can be a different shape, as long as the push-button unit of this palmtop device can be installed on this light guide structure 11.Moreover two light in part 111 are formed at a side of this light guide structure 11, are positioned at corresponding to this luminaire 3 parts.As shown in Figure 1, light in part 111 is corresponding to two rectangular recess such as the luminaire 3 of LED.
Each coupling part can be perforate.In this preferred embodiment, this coupling part 13 is circular hole or the perforate that forms according to the push-button unit shape of this palmtop device.In other words, the shape of each coupling part 13 and size form pack into the mode of corresponding coupling part 13 of push-button unit allowing.Therefore, the shape of coupling part 13 and size change to some extent according to the setting of the push-button unit of different palmtop devices and design.
Even light is level and comes from same direction that incident light can touch the different types of shape of each light guide plate or surface (plane or arc surface) at diverse location, thereby enters this light in part 111 with different incident angles.Then, this light can various directions be advanced then in different emergence angle outgoing, thereby makes this light scatter at diverse location, and is distributed in widely on this light guide plate 1.
In other words, when the light that is produced by luminaire 3 enters light guide structure 11 by light in part 111, shown in Fig. 2 A to Fig. 2 C, strike the just partially or even wholly refraction and/or the reflection (travel path of light is shown in arrow among the figure) of incident light of a sidewall of light guide section 15 (its comprise at least plane 151, arc surface 153 and free form surface 155 one of them), and make light scatter to each coupling part 13 and push-button unit widely to provide this palmtop device uniform brightness.In addition, if light guide section 15 some surface are wavy and have coarse part that this light can reflect in different angles, causes the reflected light that spreads.Therefore, this light can be transferred into more multizone, and makes this light guide plate 1 can provide broader and more robust brightness to this palmtop device.
Owing to those skilled in the art can revise the shape of this light guide section 15 based on optical principle, thereby do not repeat them here.Except that in this embodiment each coupling part 13 and each light guide section 15 be separate be provided with, in another embodiment, each or some coupling part 13 also can be connected with each or some light guide section 15 or be coupled.
Than prior art, the present invention allows light to concentrate and be distributed in the zone that needs brightness at a plurality of light guide sections 15 of light guide plate 1 design, make the present invention sufficient brightness is provided for whole this palmtop device by under the low production cost situation, using simple structure.
Second embodiment
Fig. 3 and Fig. 4 A to Fig. 4 B are synoptic diagram, in order to light guide plate 1 according to a second, preferred embodiment of the present invention to be described.In this second preferred embodiment, the structural similarity of most of light guide plate 1 is in this first preferred embodiment, yet the light guide plate 1 of this second preferred embodiment further comprises shading member 113.In this embodiment, shading member 113 is arranged on the light guide structure 11, and it is positioned on the side of light in part 111 and corresponding to luminaire 3 parts.This shading member 113 can be made by a wherein material of the group that potpourri is formed of glass, plastics, polycarbonate (PC), polymethylmethacrylate (PMMA), polystyrene (PS), polyamide (PA), methyl methacrylate-styrene (MS), polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polypropylene (PP), Polyvinylchloride (PVC), acrylonitrile-butadiene-styrene resin (ABS), tygon (PE) and above-mentioned material.Preferably, shading member 113 is made greater than 50% material by low-refraction, high reflectance or absorptivity.Shading member 113 also comprises having sticky material at least on surface thereof.This shading member 113 also is one of them of single face gum or two-sided gum.
In addition, in another embodiment, the light guide structure 11 of light guide plate 1 can further comprise rank portion structure 115, wherein go up the apical side height on rank and the different thickness Y that are shading member 113 of the apical side height on following rank, so that the end face coplane of the end face of shading member 113 and light guide structure 11, there is not difference in height and make between the end face of the end face of shading member 113 and light guide structure 11.
Because present embodiment is being provided with shading member 113 near these luminaire 3 parts, can reflect from the light of this light emitted or absorption from the light that this light source spills, avoid coupling part 13 brightness too high.Thereby can avoid hot spot-effect and reach more even light distribution, provide brighter brightness to palmtop device.
Though shading member 113 is rectangles in this embodiment, not as limit.Shading member 113 can be made Any shape by demand.For example, shading member 113 can be circle, ellipse, zigzag or polygon etc.In addition, the number of shading member, thickness, position and material are set all can be designed or change according to actual required.
The 3rd embodiment
Fig. 5 A to Fig. 5 E is a synoptic diagram, in order to the light guide plate 1 of explanation according to the 3rd preferred embodiment of the present invention.In the 3rd preferred embodiment, the structural similarity of most of light guide plate 1 is in first preferred embodiment, yet the light guide plate 1 of the 3rd preferred embodiment is provided with direct projection light source (with reference to the luminaire 3 ' of Fig. 5 A to the 5D figure), or is provided with direct projection and side light source.
With reference to Fig. 5 A, the light in part 111 ' of this light guide plate 1 is formed at the bottom surface of light guide structure 11, is positioned at corresponding to the luminaire 3 ' part such as LED.This type of setting need can be applicable to high-intensity specific region.Moreover if light guide plate 1 is provided with direct projection light source and side light source (with reference to the luminaire 3 of Fig. 1), this direct projection light source (luminaire 3 ') can replenish the brightness in insufficient light zone.
With reference to Fig. 5 A to the 5D figure, side light source (luminaire 3) can be set to and light guide structure 11 coplanes, and partially or even wholly embeds light guide structure 11, or is covered by the rank portion structure of this light guide structure 11.
Shown in 5C figure, shading member 113 ' connects puts the luminaire 3 ' part that is positioned at the respective side light source at light guide structure 11, and wherein further handle through physical technology or chemical technology the bottom surface of light guide structure 11, is beneficial to avoid reflected light to spill from light guide section 11.Moreover, shown in 5D figure, shading member 113 " be attached at a side of light in part.
In addition, shown in Fig. 5 E, the light that arrow M1 representative spills from light guide structure 11, the light that arrow M2 representative is intercepted or reflected by light guide structure 11, arrow M3 then represents the total reflection of light.Shading member 113 ' can be made as far as possible ideally, in the hope of reflecting most light and avoiding light to spill from light guide structure 11.Yet, because when any incident angle during greater than critical angle (its be according to the Snell law in the incident angle of the interface of reflected light between two media (for example air and this light guide structure 11) when advancing), light just can carry out total reflection (shown in arrow M3), so the shading member of production oversized dimensions is unnecessary and increases production cost.Therefore, avoid this shading member 113 ' to produce unnecessary interference for asking, and reduce production costs, the length of this shading member 113 ' is by following formula definition:
Wherein L is the length of this shading member, D for the incidence point of the incident light that sends from luminaire 3 ' to the distance between the end face of light guide structure 11, n then is the refractive index of light guide structure 11.
Moreover the shape of light in part 111 (111 ') and big I are revised as shown in Fig. 6 A to Fig. 6 H, but do not exceed with said or explanation.For example, light in part 111 (111 ') can be circular arc, spill (as shown in Figure 6A) or convex (shown in 6B figure), and its middle concave light in part can disperse light and this convex light in part can collected light.In addition, the surface energy of circular arc light in part makes beam split or spotlight effect comparatively slick and sly, because the circular arc light in part has many slope value.
In addition, light in part 111 (111 ') can be trapezoidal (shown in 6C figure) or trapezoidal (shown in 6D figure).Trapezoidal or fall trapezoidal light in part 111 (111 ') and can provide similar in appearance to the effect of circular arc light in part.Yet, because trapezoidal side (hypotenuse) tool one fixed slope only, so beam split or spotlight effect are than the tool single direction.
In addition, shown in 6G figure to Fig. 6 H, light in part 111 (111 ') can further comprise another light in part 111 on light guide structure 11 ", this light in part 111 wherein " can be prism or triangle perforate.Compared to the V-arrangement light in part, producing incident light by luminaire 3 (3 ') by behind first light in part 111 (111 '), incident light is further by triangle light in part 111 " refraction or reflection; allow light to advance, be beneficial to produce more the multi-pass footpath and reach better light distribution effect at more different directions.Should understand, light in part of the present invention can be planar-shaped, circular arc, triangle, equilateral triangle, del, polygon, convex, spill, waveform, V-arrangement, W shape, inverted V-shaped, inversed W-shape and trapezoidal one of them of group formed.Yet the number of light in part, shape and big I change, and do not exceed with said and explanation.
In the foregoing embodiments, the thickness of light guide structure 11 is preferably greater than or equals the thickness of luminaire 3, but not as limit.Light guide structure can be revised as shown in Fig. 7 A to Fig. 7 E.
With reference to Fig. 7 A, light guide structure 11 is slab design, and wherein the thickness of light guide structure 11 equals the thickness of luminaire 3.In addition, with reference to 7B figure, light guide structure 11 has the flat board corresponding to the reducing of luminaire 3, and wherein the thickness of necking end equals the thickness of this luminaire 3, and the thickness of the other parts of light guide structure 11 is greater than the thickness of this luminaire 3.With reference to 7C figure, light guide structure 11 has flared end, and wherein the thickness of this flared end is more than or equal to the thickness of this luminaire 3, and the thickness of the other parts of this light guide structure 11 is less than or equal to the thickness of this luminaire 3.With reference to 7D figure, light guide structure 11 is plate wedges, and wherein near the thickness of these luminaire 3 ends more than or equal to luminaire 3, the thickness of the other parts of light guide structure 11 then phases down.In addition, with reference to Fig. 7 E, light guide structure 11 also is a plate wedge, wherein equals the thickness of luminaire 3 near luminaire 3 ends, and the thickness of the other parts of this light guide structure 11 then increases gradually.
As previously mentioned, the light guide structure 11 that should understand light guide plate 1 can be flat board, enlarging flat board, plate wedge, the flat board of one end reducing, its respectively hold reducing flat board, the one end be wedge shape flat board, and be the flat board of wedge shape at its each end.Moreover, light guide structure 11 can pass through physical technologies such as grinding, cutting or facet and handle, or handles by chemical technologies such as coating, sputter or chemical vapor depositions, so that the light guide structure 11 of this light guide plate 1 is after treatment, can improve the refraction and/or the reflection of light, or reach total reflection.Yet, it should be noted that any physics or chemical technology that can make this light guide structure that is subject to processing 11 produce this type of effect all can be used.
Therefore, the present invention can transmit incident light and be directed to the more multiposition in portable or the hand-held device, and can provide more uniform brightness by using light guide section.So can overcome prior art such as making difficulty, cost is higher and does not have problem such as industrial utilization.In other words, the present invention can not only solve prior art problems, more can reduce cost also can be widely used on the industry scope.
The present invention is in this description and in conjunction with the example preferred embodiment, by foregoing description, and for those skilled in the art not, multiple replacement, modification and to change all be conspicuous.Therefore, the following claim of applying for be must not break away from and this replacement, modification and change done.Therefore, the claim of being applied for should be consistent with the widest declared range, is beneficial to contain all these type of modifications and similar setting.All description or accompanying drawings in this proposition all are illustrative rather than restrictive.
Claims (27)
1. light guide plate that is used for palmtop device, described palmtop device has: at least one push-button unit is to control the operation of this device; At least one luminaire is with luminous this device that illuminates; And at least one operating unit, its can accept from the input of described push-button unit and based on described acceptance input and produce control signal to control this device, described light guide plate comprises:
Light guide structure, it has end face, bottom surface and side;
At least one coupling part, it is positioned on the described light guide structure, with the push-button unit of the described palmtop device that is coupled;
At least one light in part is to accept the incident light that is produced by described luminaire and to allow this incident light to enter described light guide plate; And
A plurality of light guide sections, it can reflect and reflect described incident light, so that described incident light is transmitted and be dissipated into described coupling part and other light guide section.
2. light guide plate as claimed in claim 1, at least the processing of one of them of the side of wherein said light guide structure and bottom surface process physical technology or chemical technology, and make the side of described light guide structure and bottom surface selectively have low optical index and high light reflectivity.
3. light guide plate as claimed in claim 2, wherein said physical technology are one of them of cutting technique, facet technology and grinding technics at least.
4. light guide plate as claimed in claim 2, wherein said chemical technology are one of them of chemical vapor deposition method, sputtering technology and coated technique at least.
5. light guide plate as claimed in claim 1, wherein said light guide structure are selected from a kind of in the structure of following shape: dull and stereotyped, enlarging is dull and stereotyped, plate wedge, the flat board of one end reducing, its respectively hold reducing flat board, the one end be wedge shape flat board, and be respectively the flat board of wedge shape at its two ends.
6. light guide plate as claimed in claim 1, wherein said light guide structure is made by one of them that is selected from following material: resin, rubber, glass, plastics, polysilicon, polysilane, polycarbonate (PC), polymethylmethacrylate (PMMA), polystyrene (PS), polyamide (PA), methyl methacrylate-styrene (MS), polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polypropylene (PP), Polyvinylchloride (PVC), acrylonitrile-butadiene-styrene resin (ABS), tygon (PE), phenolics (PF) and composition thereof.
7. light guide plate as claimed in claim 1, wherein said light guide structure also comprises at least one rank portion structure, its edge at described light guide structure has rank and at least one following rank at least one, and the difference in height X between the end face on the end face on wherein said upward rank and described rank down is equal to or greater than the thickness of described luminaire.
8. light guide plate as claimed in claim 1, described light guide structure also comprises at least one rank portion structure, its edge at described light guide structure has rank and at least one following rank at least one, and the difference in height Y between the end face on the end face on wherein said upward rank and described rank down is equal to or less than the thickness of described shading member.
9. light guide plate as claimed in claim 1, wherein said light in part is formed on the bottom surface of described light guide structure, and is positioned at the edge of described light guide structure or is positioned at a side of described coupling part.
10. light guide plate as claimed in claim 1, wherein said light in part also has prism, to disperse described incident light.
11. light guide plate as claimed in claim 1, wherein said light in part are planar-shaped, circular arc, triangle, equilateral triangle, del, polygon, convex, spill, waveform, V-arrangement, W shape, inverted V-shaped, inversed W-shape and trapezoidal one of them of group formed.
12. light guide plate as claimed in claim 1 also comprises at least one shading member, it connects puts on described light guide structure, and is positioned at corresponding to described light in part part to reflect described incident light.
13. as the light guide plate of claim 12, wherein said shading member is made by the material of low-refraction or the material of high reflectance.
14. as the light guide plate of claim 12, wherein said shading member is an adhesion.
15. as the light guide plate of claim 12, wherein said shading member also is included in its at least one side and has adhesion.
16. as the light guide plate of claim 12, wherein said shading member is made by one of them of following material: resin, rubber, glass, plastics, polysilicon, polysilane, polycarbonate (PC), polymethylmethacrylate (PMMA), polystyrene (PS), polyamide (PA), methyl methacrylate-styrene (MS), polybutylene terephthalate (PBT), polyethylene terephthalate (PET), polypropylene (PP), Polyvinylchloride (PVC), acrylonitrile-butadiene-styrene resin (ABS), tygon (PE), phenolics (PF) and compound thereof.
17. light guide plate as claimed in claim 1, wherein said coupling part are the perforates that runs through.
18. light guide plate as claimed in claim 1, wherein said light guide section are the polygon perforates.
19. light guide plate as claimed in claim 1, the sidewall of wherein said light guide section comprise one of them of surface of following shape: flat surfaces, arc-shaped surface, concave surface, convex surface, pointed surface, waveform surface, square surface, grid shape surface and free shape surface.
20. light guide plate as claimed in claim 1, wherein said light guide structure have at least two difform light guide sections.
21. a light guide plate that is used for palmtop device, described palmtop device has: at least one push-button unit is to control the operation of this device; At least one luminaire is with luminous this device that illuminates; And at least one operating unit, it can accept the input from described push-button unit, and based on the input of described acceptance and produce control signal to control this device, described light guide plate comprises:
Light guide structure, it has end face, bottom surface and side, is equal to or greater than described luminaire on the thickness of wherein said light guide structure;
At least one coupling part, it is positioned on the described light guide structure, with the push-button unit of the described palmtop device that is coupled;
At least one light in part with the incident light of accepting to be produced by described luminaire, and allows this incident light to enter described light guide plate;
A plurality of light guide sections, it can reflect and reflect described incident light, so that described incident light is transmitted and be dissipated into described coupling part and other light guide section; And
At least one shading member, it is attached to the sidewall of described light in part, with the described light in part that hides at least one side and reflect described incident light.
22. as the light guide plate of claim 21, wherein said light guide structure also comprises at least one rank portion structure, its edge at described light guide structure has rank and at least one following rank at least one.
23. as the light guide plate of claim 21, wherein said light in part also has prism, to disperse described incident light.
24. as the light guide plate of claim 21, wherein said light in part is formed on the bottom surface of described light guide structure.
25. as the light guide plate of claim 21, wherein said shading member also is included in its at least one side and has adhesion.
26. as the light guide plate of claim 21, wherein said shading member is made by the material of the material of at least a low-refraction or high reflectance.
27. as the light guide plate of claim 21, wherein said light guide section comprises first group and second group, first group of described light guide section is distributed in the border of described light guide structure, and second group of described light guide section is distributed in the central area of described light guide structure.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11/488,111 US20080007964A1 (en) | 2006-07-05 | 2006-07-18 | Light guiding structure |
| US11/488,111 | 2006-07-18 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101109833A true CN101109833A (en) | 2008-01-23 |
Family
ID=39041979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100043100A Pending CN101109833A (en) | 2006-07-18 | 2007-01-22 | Light guiding plate |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2008027905A (en) |
| KR (1) | KR20080008207A (en) |
| CN (1) | CN101109833A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102721996A (en) * | 2012-06-06 | 2012-10-10 | 华为终端有限公司 | Light guide device, light emitting equipment, electronic equipment and key |
| WO2012139309A1 (en) * | 2011-04-14 | 2012-10-18 | 深圳市华星光电技术有限公司 | Backlight module |
| US8426877B2 (en) | 2011-04-14 | 2013-04-23 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Backlight module |
| TWI500061B (en) * | 2013-05-17 | 2015-09-11 | Primax Electronics Ltd | Luminous keyboard device |
| CN105425331A (en) * | 2015-09-01 | 2016-03-23 | 苏州达方电子有限公司 | Backlight module and light guide plate thereof |
| CN108538669A (en) * | 2017-07-28 | 2018-09-14 | 达方电子股份有限公司 | luminous key |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9563281B2 (en) | 2008-11-11 | 2017-02-07 | Hewlett-Packard Development Company, L.P. | Keyboard illumination apparatus and method |
| KR20120092322A (en) | 2011-02-11 | 2012-08-21 | 엘지이노텍 주식회사 | Display device |
| KR102244847B1 (en) * | 2014-12-31 | 2021-04-28 | 엘지디스플레이 주식회사 | Super Directional Light Guide Film And Thin Film Type Back Light Unit For Flat Panel Display Using The Same |
-
2007
- 2007-01-22 CN CNA2007100043100A patent/CN101109833A/en active Pending
- 2007-02-22 KR KR1020070018038A patent/KR20080008207A/en not_active Application Discontinuation
- 2007-07-05 JP JP2007177696A patent/JP2008027905A/en not_active Withdrawn
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012139309A1 (en) * | 2011-04-14 | 2012-10-18 | 深圳市华星光电技术有限公司 | Backlight module |
| US8426877B2 (en) | 2011-04-14 | 2013-04-23 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Backlight module |
| CN102721996A (en) * | 2012-06-06 | 2012-10-10 | 华为终端有限公司 | Light guide device, light emitting equipment, electronic equipment and key |
| WO2013182003A1 (en) * | 2012-06-06 | 2013-12-12 | 华为终端有限公司 | Light guiding device, light emitting apparatus, electronic apparatus and key |
| TWI500061B (en) * | 2013-05-17 | 2015-09-11 | Primax Electronics Ltd | Luminous keyboard device |
| CN105425331A (en) * | 2015-09-01 | 2016-03-23 | 苏州达方电子有限公司 | Backlight module and light guide plate thereof |
| CN108538669A (en) * | 2017-07-28 | 2018-09-14 | 达方电子股份有限公司 | luminous key |
| CN108538669B (en) * | 2017-07-28 | 2020-06-09 | 达方电子股份有限公司 | Luminous key |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20080008207A (en) | 2008-01-23 |
| JP2008027905A (en) | 2008-02-07 |
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