CN101230970B - Illuminating unit - Google Patents
Illuminating unit Download PDFInfo
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- CN101230970B CN101230970B CN2008100012766A CN200810001276A CN101230970B CN 101230970 B CN101230970 B CN 101230970B CN 2008100012766 A CN2008100012766 A CN 2008100012766A CN 200810001276 A CN200810001276 A CN 200810001276A CN 101230970 B CN101230970 B CN 101230970B
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Abstract
Disclosed is an illuminating unit capable of effectively introducing light emitted from a light source into a light guide sheet to improve the brightness of light and emitting uniform color light. Light emitted from a light emitting diode of a light source unit is incident on a side surface of a light guide sheet. A spacer aligns the emission center of the light emitting diode with the center of the light guide sheet in the thickness direction thereof. The incident light travels in the light guide sheet and is then diffused in light emitting regions provided on the main surface of the light guide sheet. Then, the diffused light is emitted to the outside. In addition, light components emitted from a gap between the light emitting diode and the side surface of the light guide sheet or light components emitted from the upper surface of the light source unit to the outside are reflected to the light guide sheet by a cover member.
Description
Technical field
The present invention relates to the lighting unit that the operating area to the mobile communication terminal of mobile phone etc. throws light on.
Background technology
In the past, as display unit, mainly be the lighting mechanism of liquid crystal indicator, known rear side from display panels is supplied with the flat light source of light, for example back lighting device towards the display surface side.As such back lighting device, disclosed device in the patent documentation 1 is for example arranged.As patent documentation 1 is disclosed, as the thickness of the thickness of the light emitting diode of the light source of back lighting device and circuit board about equally or more than the thickness of circuit board.
In addition, for example also has disclosed device in the patent documentation 2.This flat light source possesses LGP and transparent membrane, and this LGP is used for the light channeling conduct from light emitting diode, and this transparent membrane has under the effect from the light of LGP and sends the fluorescent material of fluorescence, and has convex-concave surface.This flat light source is constituted as: the light of the diode of self-luminous in the future is radiated at and sends fluorescence on the fluorescent material, and this fluorescence injects to the external world via convex-concave surface simultaneously.
Patent documentation 1: the spy opens the 2003-298119 communique
Patent documentation 2: the spy opens the 2000-123620 communique
In recent years, make the operating area of mobile communication terminal of mobile phone etc. luminous in order to utilize flat light source as described above, and developed light guide sheet.This light guide sheet is owing to be configured on the operating area of mobile communication terminal, so need have flexiblely in order to carry out user's operation reliably, and is the sheet of very thin thickness.Because the thickness of this light guide sheet likens the thin thickness into the light emitting diode of light source to, so need import light as far as possible efficiently from light emitting diode.
In addition, this light guide sheet adopts plastic material usually.So,, then cause the special component in the light to be absorbed, exist to be difficult to make whole problem with even colour light emitting according to the position of light source if make the light guide sheet that adopts plastic material guide the light of light emitting diode by above-mentioned method.
Summary of the invention
The present invention is the invention of making in view of the above-mentioned problems, its purpose is to provide a kind of lighting unit, it can make as far as possible efficiently and import LGP from the light of light source and improve brightness, and regardless of the position of light source, can both be with even colour light emitting on whole of sheet.
Lighting unit of the present invention, it comprises: matrix; Light guide sheet, it has interarea and end face, is configured on the described matrix; Light source, it is configured near the end face of described light guide sheet; Liner, it is configured between described light guide sheet and the described matrix, forms white, has the enough thickness of the thickness direction center contraposition of the centre of luminescence that makes described light source and described light guide sheet; And cover, the gap that it is configured to cover at least between the end face of described light source and described light guide sheet is used for reflecting by the light that reflection layer leaks out the end face that does not incide described light guide sheet and makes it turn back to described light guide sheet.
Constitute according to this, when in light guide sheet, being directed behind the surface feeding sputtering of light guide sheet from the light of light source, the also tegmentum parts reflection and being directed in the light guide sheet of light that penetrates from the gap or the light that above light source, penetrates to the external world.Therefore, can efficiently the light from light source be guided to light guide sheet.Its result, the brightness that has improved lighting unit.
In lighting unit of the present invention, preferred: described cover has light absorbing zone, is used for absorbing the end face that does not incide described light guide sheet and the light that leaks out.
In lighting unit of the present invention, preferred: described cover is bonded on the interarea of described light guide sheet by adhesives.
In lighting unit of the present invention, preferred: also possess liner, it is configured between described light guide sheet and the described matrix, has the enough thickness of the thickness direction center contraposition of the centre of luminescence that makes described light source and described light guide sheet.
Constitute according to this, owing to make the center contraposition of the thickness direction of the centre of luminescence of light source and light guide sheet, so can make light incide light guide sheet efficiently from light source.Thus, the illumination of light-emitting zone can will be used for efficiently, so can improve the brightness of light-emitting zone from the light of light source.
In lighting unit of the present invention, preferred described liner is made of light transmissive material (for example transparent material).At this moment, the position of the centre of luminescence of preferred described light source, with the aggregate thickness of described light guide sheet and described liner on the center contraposition.
In lighting unit of the present invention, preferred: described liner has the inclined-plane, and the thickness on this inclined-plane is along with towards from the direct of travel of the light of described light source and attenuation, and at section according to circumstances down, angulation is more than 30 ° between described light guide sheet and the described inclined-plane.
In addition, in lighting unit of the present invention, preferably: described light guide sheet also has a plurality of light-emitting zones, described light-emitting zone is arranged on the described interarea, utilization is luminous from the light of described surface feeding sputtering, described light-emitting zone is made of light reflecting material, and this light reflecting material comprises the correction material of color of color component of the light that material absorbed of the main body that constitutes described light guide sheet.
According to this formation, revise material owing in light reflecting material, mixes, so can suppress the absorption of specific light component, the luminous misalignment in the inhibition light-emitting zone at light-emitting zone.Its result, regardless of the position of light source, can both be with even colour light emitting on whole of sheet.
In lighting unit of the present invention, preferred described light-emitting zone is along with comprise described correction material away from the end face of light incident more muchly.Constitute according to this, the energy high accuracy suppresses the deviation of color.
In lighting unit of the present invention, preferred described light-emitting zone is along with becoming wide more away from the end face of light incident.Constitute according to this, can high accuracy suppress the deviation of color, and can suppress the deviation of lightness.
(invention effect)
Because lighting unit of the present invention comprises: matrix; Light source, it is configured near the end face of described light guide sheet; And cover, it is configured to cover at least the gap between the end face of described light source and described light guide sheet, be used for making the end face that does not incide described light guide sheet and the light that leaks out turns back to described light guide sheet, improve brightness so can will import light guide sheet from the light of light source as far as possible efficiently.
In addition, comprise owing to lighting unit of the present invention: matrix with operating area; Light guide sheet, it has interarea and end face, directly is configured on the described matrix, and perhaps the sheet across regulation is configured on the described matrix; Light source, it is configured near the end face of described light guide sheet; And liner, it is configured between described light guide sheet and the described matrix, has the enough thickness of the thickness direction center contraposition of the centre of luminescence that makes described light source and described light guide sheet, so can make light guide sheet optimum with respect to the position of light source, can improve brightness.
In addition, because light guide sheet of the present invention is the light guide sheet with sheet main body, this sheet main body has interarea and end face, and have a plurality of light-emitting zones, this light-emitting zone is arranged on the described interarea, makes from the light of described surface feeding sputtering luminous, described light-emitting zone is made of light reflecting material, this light reflecting material comprises the correction material of color of the color component of the light that material absorbed that constitutes described main body, so regardless of the position of light source, can be with even colour light emitting on whole of sheet.
Description of drawings
Fig. 1 is the figure that represents not have the lighting unit of structure involved in the present invention.
Fig. 2 is the figure of the related lighting unit of expression embodiments of the present invention, (a) is side view, (b) is vertical view.
Fig. 3 (a)～(d) is the figure of the cover of the related lighting unit of expression embodiments of the present invention.
Fig. 4 (a)～(c) is the figure of the light source cell of the related lighting unit of expression embodiments of the present invention.
Fig. 5 (a)～(c) is the figure of the light source cell of the related lighting unit of expression embodiments of the present invention.
Fig. 6 is the figure of other examples of the lighting unit that is used to illustrate that embodiments of the present invention are related.
Fig. 7 (a) and (b) are figure of other examples of the related lighting unit of expression embodiments of the present invention.
Fig. 8 is the figure of the related lighting unit of expression other embodiments of the present invention.
Fig. 9 is the side view of other examples of the related lighting unit of expression other embodiments of the present invention, (a) is side view, (b) is the partial enlarged drawing of (a).
Figure 10 is the angle θ on inclined-plane of expression liner and the figure of the relation between the brightness.
Figure 11 is the partial enlarged drawing of other examples of the related lighting unit of expression other embodiments of the present invention.
Figure 12 is the figure of the related light guide sheet of the another embodiment of expression the present invention, (a) is vertical view, (b) is partial side view.
Figure 13 is an expression colourity and apart from the figure of the relation between the distance of light source.
Figure 14 is the figure that expression is used to illustrate the color table that colourity shown in Figure 13 changes.
Figure 15 is the figure of the relation between the correction material amount of representing in colourity and the light reflecting material.
Figure 16 (a)～(d) is light reflecting material in the expression light-emitting zone and the figure that revises the ratio between the material.
Figure 17 is the figure of other examples of the related light guide sheet of the another embodiment of expression the present invention.
Among the figure: the 11-matrix; The 12-contact chip; The 13-light guide sheet; The 14-light source cell; The 15-cover; The 16-layer of adhesive material; The 141-light emitting diode; 142,154-transparent resin layer; The 143-reflector; The 151-reflection layer; The 152-light absorbing zone; The 153-metal level; 53,56-liner; The 56a-inclined-plane; 17,18-adhesives; 21a, 21b, 21c-light-emitting zone; The 22-non-luminous region; The 111-light reflecting material; 112-revises material; 113-light reflecting material layer; 114-revises material layer; The point of 115-light reflecting material; 116-revises the point of material.
The specific embodiment
Below, with reference to accompanying drawing embodiments of the present invention are elaborated.
Fig. 1 is the figure that represents not have the lighting unit of structure involved in the present invention.Lighting unit shown in Figure 1 has matrix 11, and matrix 11 has operating area.Formation about the operating area of matrix 11 is not particularly limited.On matrix 11, dispose contact chip 12.Contact chip 12 is made of the plastic material of PET (PETG) resin etc.
On contact chip 12, dispose light guide sheet 13.Near the end face B of light guide sheet 13, dispose light source cell 14.Light emitting diode (LED) 141 as light source is installed in this light source cell 14.In order to carry out operation (for example button pushes) reliably, need make the thickness attenuation of this light guide sheet 13 at operating area.Therefore, the thickness of light guide sheet 13 is than the thin thickness of light source cell 14.
Between the end face B of light source cell 14 and light guide sheet 13, there is gap S.It is very difficult wanting to make the S complete obiteration of this gap.From the light that light source cell 14 penetrates, do not incide the end face B of light guide sheet 13 and the light P1 that spills as shown in Figure 1, S penetrates to the external world from this gap.In addition, also there is the light P2 that above light source cell 14, penetrates to the external world.Such light P1, P2 so can the brightness of lighting unit not contributed, therefore causes brightness to reduce owing to be not imported in the light guide sheet 13.
Fig. 2 is the figure of the related lighting unit of expression embodiments of the present invention, (a) is side view, (b) is vertical view.Lighting unit shown in Figure 2 is provided with cover 15, and it covers the gap S between the end face B of light source cell 14 and light guide sheet 13 at least.This cover 15 be configured to also to cover light source cell 14 above.This cover 15 can be brought into play following effect: make the end face B that does not incide light guide sheet 13 and the light that spills, be that the light P1 that penetrates from gap S among Fig. 1, the light P2 that penetrates to the external world above light source cell 14 turn back to light guide sheet 13.
The light that light emitting diodes 141 in the light source cell 14 send is from the end face B incident of light guide sheet 13 and be directed in light guide sheet 13.Then, the light of guiding penetrates to the external world after going up the light-emitting zone diffusion that is provided with at the interarea A of light guide sheet 13 (with the interarea of matrix 11 opposite sides) in light guide sheet 13.In addition, light or light tegmentum parts 15 reflections of penetrating from gap S of above light source cell 14, penetrating and being directed in the light guide sheet 13 to the external world.Therefore, can make light guide sheet 13 efficiently to light channeling conduct from light source cell 14.Its result, the brightness that improves lighting unit.
Can will be directed to the function of light guide sheet 13 as long as cover 15 has, then its formation is not particularly limited from the light that light guide sheet 13 spills.Shown in Fig. 3 (a), cover 15 can only be made of reflection layer 151, shown in Fig. 3 (b), also can be the formation at the arranged outside light absorbing zone 152 of reflection layer 151.Especially, shown in Fig. 3 (b), according to formation at arranged outside light absorbing zone 152, even owing to have the light by reflection layer 151 also can absorb this light, so can block the light of revealing to the external world reliably.Its result when being installed on lighting unit involved in the present invention on the equipment, can prevent that light from going out from the equipment frame body drain.Here,, the resin bed of white etc. can be enumerated, the resin bed of black or the tape of black etc. can be enumerated as light absorbing zone 152 as reflection layer 151.In addition, shown in Fig. 2 (b), the length L of reflection layer 151 is preferably long than the width of light source cell 14.Thus, can reliably the light of revealing from light guide sheet 13 be directed to light guide sheet.
In addition,, shown in Fig. 3 (c), can constitute, shown in Fig. 3 (d), also can transparent resin layer 154 be set in the inboard of metal level 153 and constitute by metal level 153 as cover 15.Shown in Fig. 3 (d), by transparent resin layer 154 is set, thereby can prevent reliably that the wiring etc. in metal level 153 and the light source cell 14 from causing short circuit.
Fig. 4 is the figure of the light source cell of the related lighting unit of expression embodiments of the present invention, (a) is stereogram, (b) is front view, (c) is side view.The structure that light source cell shown in Figure 4 has is: light emitting diode 141 is embedded in the transparent resin layer 142, disposes reflector 143 around this transparent resin layer 142.In light source cell 14, shown in Fig. 4 (a), never exist the peristome of reflector 143 to penetrate, so do not need to consider the light that above light source cell 14, penetrates from the light of light emitting diode 141 with reflector 143.Therefore, cover 15 is configured to as long as cover gap S between the end face B of light source cell 14 and light guide sheet 13, also can cover light source cell 14 above.
Fig. 5 is the figure of the light source cell of the related lighting unit of expression embodiments of the present invention, (a) is stereogram, (b) is front view, (c) is side view.The structure that light source cell shown in Figure 5 has is: light emitting diode 141 is embedded in the transparent resin layer 142, does not have reflector.In this light source cell 14, shown in Fig. 5 (a), owing to penetrate from 4 directions from the light of light emitting diode 141, so the light that need utilize cover 15 to penetrate above light source cell 14 is directed to light guide sheet 13.Therefore, cover 15 need be arranged to cover the gap S between the end face B of light source cell 14 and light guide sheet 13, and cover light source cell 14 above.Under the situation of light source cell shown in Figure 5 14, be approximately perpendicular to the light (light that above light source cell 14, penetrates) that spills on the direction on substrate 11 surfaces owing to exist, so be unfavorable for the even illumination of lighting unit.As previously mentioned, by the gap S between the end face B that cover 15 is arranged to cover light source cell 14 and light guide sheet 13, and cover light source cell 14 above, thereby the even illumination that also can improve lighting unit.
Under situation about light source cell 14 being installed on the substrate 11, as shown in Figure 6, light source cell 14 is floated inevitably above substrate 11.The about 0.01mm～0.09mm of float-amount H when this light source cell 14 is installed.So, if light source cell 14 come-ups, then as shown in Figure 6, cause the position relation between light source cell 14 and the light guide sheet 13 to change, promptly, distance between the center of the thickness direction of the center of the thickness direction of light source cell 14 and light guide sheet 13 widens, thereby can not guide effectively from the end face B of light guide sheet 13 from the light of light source cell 14.Therefore, may reduce the brightness of lighting unit.
Under the above-mentioned situation of supposition, cover 15 is preferred bonding by the interarea A of adhesives and light guide sheet 13.That is, shown in Fig. 7 (a), make layer of adhesive material 16 between the interarea A and cover 15 of light guide sheet 13.In such formation, if light source cell 14 is installed on matrix 11 back light source cells 14 come-ups, then follow the rising of light source cell 14, cover 15 rises.This cover 15 is bonded on the interarea A of light guide sheet 13 by layer of adhesive material 16, so along with the rising of cover 15, light guide sheet 13 also floats.Thus, shown in Fig. 7 (b), the distance at the center of the thickness direction of the center of the thickness direction of light source cell 14 and light guide sheet 13 is constant.Therefore, the light from light source cell 14 guides from the end face B of light guide sheet 13 efficiently.Its result can prevent that the brightness of lighting unit from reducing.
Then, with reference to accompanying drawing other embodiments of the present invention are elaborated.
Fig. 8 is the figure of the related lighting unit of expression embodiments of the present invention.In addition, about with the component omission explanation of Fig. 1～7 same-sign.
On contact chip 12, dispose light guide sheet 13 across liner 53.That is, between light guide sheet 13 and matrix 11, dispose liner 53 across contact chip 12.In addition, on light guide sheet 13, be provided with the light-emitting zone (not shown) that constitutes by light reflecting material.
In having the lighting unit of said structure, owing to make the center contraposition of the thickness direction of the centre of luminescence of light emitting diode 141 and light guide sheet 13 by liner 53, so can make light incide light guide sheet 13 efficiently from light emitting diode 141.Thus, because the light of the diode of self-luminous in the future 141 is used for the illumination of light-emitting zone efficiently, so can improve the brightness of light-emitting zone.
When the contraposition at the center of the thickness direction of the centre of luminescence that carries out light emitting diode 141 by liner 53 and light guide sheet 13, also can constitute the center contraposition of the thickness of the position of the centre of luminescence that makes light emitting diode 141 and light guide sheet 13 and liner.That is, shown in Fig. 9 (a), also can make the center contraposition of the position of the centre of luminescence of light emitting diode 141 and light guide sheet 13 and the aggregate thickness of liner 56.Particularly, shown in Fig. 9 (b), be under the conplane state at the end face that makes light guide sheet 13 with the transparent liner 56 that sees through light, make both and light source cell 14 opposed, make center X on the thickness direction of light guide sheet 13 and transparent liner 56, with the centre of luminescence contraposition of light emitting diode 141.
In this case, the thickness of liner 56 is set to enough thickness, so that the centre of luminescence contraposition of itself and light emitting diode 141.Thus, the thickness of liner 56 can suitably be set on the basis of the centre of luminescence position of the thickness of considering light guide sheet 13 and the light emitting diode 141 on the matrix 11.In addition, liner 56 is made of transparent material.Thus, can play a role as light conductor with light guide sheet 13 one.Material as liner 56 at this moment can adopt and light guide sheet 13 identical materials, for example can enumerate ABS resin etc.
About liner 56, preferably has inclined-plane 56a, the direct of travel attenuation of the light that the thickness of this 56a sends towards light emitting diode 141.By inclined-plane 56a is set like this, thereby the light of guiding in liner 56 can not penetrated to the external world, can be in light guide sheet 13 channeling conduct and effectively utilize luminous in light-emitting zone.
Below, angulation θ between the light guide sheet 13 of the section apparent time shown in Fig. 9 (b) and the inclined-plane 56a is described the influence of brightness.This influence is simulated and is tried to achieve by ZEMAX (registration mark)-ray trace of EE.Particularly, adopt following light guide sheet, the light-emitting zone that this light guide sheet has thickness 0.2mm, diffusion diameter 2.25mm, diffusion probability 0.15 3 * 7 is listed as totally, adopting θ among Fig. 9 (b) respectively is 10 °～90 °, the liner 56 of thickness 0.25mm, to shown in Fig. 2 (a) when light source makes light incide the end face of light guide sheet+liner the brightness from the light of light-emitting zone study.At this moment, be under the conplane state, make both and light source cell opposed at the end face that makes light guide sheet and liner, make center on the thickness direction of light guide sheet and liner, with the centre of luminescence contraposition of light source.In addition, as light source, 2 on the lamp of employing White LED, NESW020A (manufacturing of Ri Ya chemical company), each lamp flow through the 5mA electric current (each lamp 0.25 lumen) of (amounting to 10mA), and the light radical is 100,000.Its result as shown in figure 10.
In addition, for relatively, also studied the brightness of the light under the situation that liner is not set, be 45cd/m this moment
2As shown in Figure 10, if angulation θ is more than 30 ° between light guide sheet 13 and the inclined-plane 56a, the light that then guides in liner can not penetrate to the external world, thus can be in light guide sheet channeling conduct and light effectively is used in the luminous of light-emitting zone, improve brightness thus.
In lighting unit involved in the present invention, as shown in figure 11,, this liner 53 is engaged with contact chip 12 and light guide sheet 13, thereby can prevent to cause light guide sheet 13 dislocation by configuration liner 53 between contact chip 12 and light guide sheet 13.Thus, can stablize the brightness that improves lighting unit.In this case, liner 53 and light guide sheet 13 are engaged, liner 53 and contact chip 12 are engaged by adhesives 18 by adhesives 17.At this moment, about adhesives 17, can suitably select according to the material of light guide sheet 13.For example, when light guide sheet 13 is made of silicone resin, adopt the adhesives of silicone, when light guide sheet is made of polyurethane resin, adopt the adhesives of acrylic compounds.On the other hand, about adhesives 18, preferably adopt the adhesives of acrylic compounds.
Below, with reference to accompanying drawing the another embodiment of the present invention is elaborated.In addition, about with the component omission explanation of Fig. 1～Fig. 7 same-sign.In addition, omitted cover 15 in the following description.
Figure 12 is the figure of the related lighting unit of the another embodiment of expression the present invention, (a) is vertical view, (b) is partial side view.
On the interarea A of light guide sheet 13, be provided with a plurality of light-emitting zones 21 (21a, 21b, 21c), be used for making light luminous from light source 14 from end face B incident.This light-emitting zone 21 is configured to rough surface, perhaps forms the layer that mainly is made of light reflecting material (for example white ink liquid).Here, light-emitting zone 21 is the layers that are made of light reflecting material.By such light-emitting zone 21 is set, shown in Figure 12 (b), the light of guiding carries out penetrating to the external world after the light reflection (light diffusion) at light-emitting zone 21 in light guide sheet 13.Thus, can be from extraneous visuognosis light.In addition, at the interarea A of light guide sheet 13, the zone beyond the light-emitting zone 21 is a non-luminous region 22, can not visuognosis light from this zone.
Light-emitting zone 21 comprises the correction material, is used for the color of each color component of the light that material absorbed that constitutes light guide sheet 13 is revised.The material of above-mentioned formation light guide sheet 13 all has light (blue light composition) back of the wavelength between absorption 400nm～500nm and so the character of flavescence in this case, adopts blue correction material as revising material.Can enumerate black liquid as revising material) or pigment etc.At this moment, light-emitting zone 21 can wait to form by having mixed in the light reflecting material by printing revises the layer that the composite material behind the material constitutes, and also can wait by printing independently form the layer that is made of light reflecting material and by revising the layer that material constitutes.
As mentioned above, absorb under the situation of specific light composition,, absorb the degree difference of light component according to the distance of distance light source 14 in light guide sheet 13.That is, in Figure 12 (a),, absorb the degree difference of light component according to the distance of distance light source 14.Thus, in light-emitting zone 21a, 21b, 21c, absorb the degree difference of light component.Its result, the color and luster difference of the light that sends in light-emitting zone can not be with even colour light emitting on whole of sheet main body.
According to the present invention, revise material by in light reflecting material, mixing at light-emitting zone 21, in white material, mix blue correction material (being blue pigment) here, make absorbed blue composition is here repaired, thereby can suppress the absorption of blue composition, the deviation of luminous color in the inhibition light-emitting zone.The correction material is preferably 0.001 weight %～2 weight % with respect to the amount of light reflecting material.
Here, as shown in figure 13, research apart from the distance of light source 14, and the colourity of the light that sends at this place between relation.That is, along with distance increases, x composition and y composition in the color table all increase.This is meant: according to the distance of distance light source 14, in color table shown in Figure 14, colourity moves along the direction of arrow, and promptly colourity moves to yellow.In addition, as shown in figure 15, research revise material (blue pigment) with respect to the amount of light reflecting material, and the colourity of the light that sends between relation.That is, increase along with revising the amount of material with respect to light reflecting material, X composition and y composition in the color table all reduce.This is meant: corresponding to the increase of the amount of revising material, in color table shown in Figure 14, colourity moves to the rightabout of the direction of arrow, and promptly colourity moves to white.As shown in Figure 15,,, need the pigment of 0.18 weight %/60mm,,, need the pigment of 0.3 weight %/60mm in order to get back to original color about the y composition in order to get back to original color about the x composition.Therefore, by adding the correction material of 0.003 weight %～0.005 weight %/mm, thereby can carry out color correct.
Therefore, light-emitting zone 21 preferably is configured to: from the end face of light incident, promptly along with away from light source 14, comprise many corrections material more.Particularly, in Figure 12 (a),, comprise the correction material gradually increasedly according to the order of light-emitting zone 21a, light-emitting zone 21b, light-emitting zone 21c.The deviation that can suppress thus, color accurately.
In light-emitting zone 21, shown in Figure 16 (a), in light reflecting material 111, comprise under the situation of the mode of revising material 112, promptly utilize under the situation of in light reflecting material 111, having mixed the composite material formation light-emitting zone 21 of revising material 112, in order to increase the correction material, promptly improve the ratio of revising material, as long as increase its volume, so shown in Figure 16 (b), as long as increase the amount of revising material 112.In addition, shown in Figure 16 (c),,, promptly improve the ratio of revising material, and increase area or the volume of revising material layer 114 in order to increase the correction material forming light reflecting material layer 113 respectively and revising under the situation of material layer 114.For example, when utilizing serigraphy to form under the situation of light-emitting zone, generate the serigraphy mask that the area of revising material layer 114 is increased by distance, thereby twice printing process of serigraphy that can be by comprising light reflecting material layer 113 produces everywhere the evenly light guide sheet of color at the distance light source.In addition, shown in Figure 16 (d), also can form the point 115 of light reflecting material and the point 116 of correction material respectively.
In addition, light-emitting zone 21 is owing to be configured to: from the end face of light incident, promptly along with broadening away from light source 14.Particularly, as shown in figure 17, the order according to light-emitting zone 21a, light-emitting zone 21b, light-emitting zone 21c broadens gradually.The deviation that can suppress thus, color accurately.Thus, can remedy that distance along with distance light source 14 becomes big and lightness reduces, suppress the deviation of color, and also suppress the deviation of lightness.
Then, the embodiment that carries out for clear and definite effect of the present invention is described.
On the interarea of the sheet main body that constitutes by polyurethane resin, the mixed ink liquid that has mixed blue pigment with 0.1 weight %, 0.25 weight % in chalk liquid is carried out serigraphy, form light-emitting zone, produce the light guide sheet of embodiment 1,2 respectively.In addition, on the interarea of the sheet main body that constitutes by polyurethane resin, chalk liquid is carried out serigraphy form light-emitting zone, produce the light guide sheet of comparative example.
At this moment, as chalk liquid, employing is adopted LIONEL BLUE FG-7350 (TOYO INK manufacturing) with R-580 (the former industry manufacturing of stone) 49.9 volume %, バ ィ ロ Application 200 (Japan's spinning is made) 27.8 volume %, バ ィ ロ Application 560 (Japan's spinning is made) material that 22.4 volume % mix as blue pigment.
About as the above-mentioned light guide sheet that obtains, the tone variations (x composition) on studying whole.Tone variations is to try to achieve under ト プ コ Application corporate system SR-3 and Ha ィ ラ Application De corporate system Risa-Color, 1 ° at visual angle, condition apart from 500mm.Its result, the light guide sheet of embodiment 1,2 is 0.007, has suppressed the deviation of color, and the light guide sheet of comparative example is 0.02, and misalignment strengthens.
The present invention is defined in above-mentioned embodiment, can carry out various changes and implement.For example, for the size of the formation of the operating area on the matrix, each one, material etc., in the scope that does not break away from effect of the present invention, suitably change.In addition, only otherwise the scope that breaks away from purpose of the present invention can suitably change.
Claims (8)
1. lighting unit, comprising:
Matrix;
Light guide sheet, it has interarea and end face, is configured on the described matrix;
Light source, it is configured near the end face of described light guide sheet;
Liner, it is configured between described light guide sheet and the described matrix, forms white, has the enough thickness of the thickness direction center contraposition of the centre of luminescence that makes described light source and described light guide sheet; With
Cover, it is configured to cover at least the gap between the end face of described light source and described light guide sheet, and the light that the end face that does not incide described light guide sheet is leaked out by reflection layer reflects and makes it turn back to described light guide sheet.
2. lighting unit according to claim 1 is characterized in that,
Described cover has light absorbing zone, this light absorbing zone to the end face that do not incide described light guide sheet and the light that leaks out absorb.
3. lighting unit according to claim 1 is characterized in that,
Described cover is bonded on the interarea of described light guide sheet by adhesives.
4. lighting unit according to claim 1 is characterized in that,
Described light guide sheet also has a plurality of light-emitting zones, and described light-emitting zone is arranged on the described interarea, utilize luminous from the light of described surface feeding sputtering,
Described light-emitting zone is made of light reflecting material, and this light reflecting material comprises the correction material of color of color component of the light that material absorbed of the main body that constitutes described light guide sheet.
5. lighting unit according to claim 4 is characterized in that,
Described light-emitting zone is along with comprise described correction material away from the end face of light incident more muchly.
6. lighting unit according to claim 4 is characterized in that,
Described light-emitting zone is along with becoming wide more away from the end face of light incident.
7. lighting unit, comprising:
Matrix;
Light guide sheet, it has interarea and end face, is configured on the described matrix;
Light source, it is configured near the end face of described light guide sheet;
Liner, it is configured between described light guide sheet and the described matrix, is made of light transmissive material, make the centre of luminescence of described light source the position, with the position contraposition at the center of the aggregate thickness of described light guide sheet and described liner; With
Cover, it is configured to cover at least the gap between the end face of described light source and described light guide sheet, and the light that the end face that does not incide described light guide sheet is leaked out by reflection layer reflects and makes it turn back to described light guide sheet.
8. lighting unit according to claim 7 is characterized in that,
Described liner has the inclined-plane, and the thickness on this inclined-plane is along with towards from the direct of travel of the light of described light source and attenuation,
At section according to circumstances down, angulation is more than 30 ° between described light guide sheet and the described inclined-plane.
Applications Claiming Priority (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007-011066 | 2007-01-22 | ||
| JP2007011066 | 2007-01-22 | ||
| JP2007011066A JP4813383B2 (en) | 2007-01-22 | 2007-01-22 | Light guide sheet |
| JP2007026218 | 2007-02-06 | ||
| JP2007-026218 | 2007-02-06 | ||
| JP2007026218A JP2008191429A (en) | 2007-02-06 | 2007-02-06 | Operation unit |
| JP2007036590A JP4829811B2 (en) | 2007-02-16 | 2007-02-16 | Illumination unit |
| JP2007-036590 | 2007-02-16 | ||
| JP2007036590 | 2007-02-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101230970A CN101230970A (en) | 2008-07-30 |
| CN101230970B true CN101230970B (en) | 2010-12-08 |
Family
ID=39703966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100012766A Expired - Fee Related CN101230970B (en) | 2007-01-22 | 2008-01-17 | Illuminating unit |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4813383B2 (en) |
| CN (1) | CN101230970B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013131378A1 (en) * | 2012-03-09 | 2013-09-12 | 京东方科技集团股份有限公司 | Reflector, preparation method therefor, and backlight source with such reflector |
| KR20160000915U (en) | 2014-09-09 | 2016-03-17 | 알프스 덴키 가부시키가이샤 | Planar light emitting device |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110104090A (en) * | 2009-01-13 | 2011-09-21 | 퀄컴 엠이엠스 테크놀로지스, 인크. | Large area light panel and screen |
| CN102035909B (en) * | 2009-09-30 | 2013-06-12 | 国基电子（上海）有限公司 | Portable electronic equipment |
| KR101261461B1 (en) | 2010-07-14 | 2013-05-10 | 엘지이노텍 주식회사 | Liquid Crystal Display |
| JP2012059676A (en) * | 2010-09-13 | 2012-03-22 | Alps Electric Co Ltd | Light guide member |
| JP5667888B2 (en) * | 2010-12-13 | 2015-02-12 | 日立マクセル株式会社 | BACKLIGHT UNIT AND VIDEO DISPLAY DEVICE USING THE SAME |
| TWI425262B (en) * | 2010-12-30 | 2014-02-01 | Au Optronics Corp | Local dimming side-lighting light guide plate and local dimming side-lighting backlight module using the same |
| WO2014016913A1 (en) * | 2012-07-25 | 2014-01-30 | 日立コンシューマエレクトロニクス株式会社 | Lighting device and image display device using same |
| KR101510855B1 (en) * | 2014-08-22 | 2015-04-09 | 삼성전자 주식회사 | Mold frames and optical sheets and backlight units and liquid crystal displays including the same |
| CN108278523A (en) * | 2017-01-06 | 2018-07-13 | 中科同德（北京）生态科技有限公司 | A kind of LED light |
| CN108278498A (en) * | 2017-01-06 | 2018-07-13 | 中科同德（北京）生态科技有限公司 | A kind of LED light |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3538746B2 (en) * | 1997-03-07 | 2004-06-14 | 株式会社エンプラス | Sidelight type surface light source device |
| JP2000321570A (en) * | 1999-05-10 | 2000-11-24 | Hitachi Ltd | Liquid crystal display device |
| JP2005347010A (en) * | 2004-06-01 | 2005-12-15 | Minebea Co Ltd | Planar lighting device |
| KR20060124405A (en) * | 2005-05-31 | 2006-12-05 | 삼성전자주식회사 | Back light assembly and liquid crystal display having the same |
-
2007
- 2007-01-22 JP JP2007011066A patent/JP4813383B2/en not_active Expired - Fee Related
-
2008
- 2008-01-17 CN CN2008100012766A patent/CN101230970B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013131378A1 (en) * | 2012-03-09 | 2013-09-12 | 京东方科技集团股份有限公司 | Reflector, preparation method therefor, and backlight source with such reflector |
| KR20160000915U (en) | 2014-09-09 | 2016-03-17 | 알프스 덴키 가부시키가이샤 | Planar light emitting device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4813383B2 (en) | 2011-11-09 |
| CN101230970A (en) | 2008-07-30 |
| JP2008177106A (en) | 2008-07-31 |
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