WO2011043003A1 - 面光源装置 - Google Patents
面光源装置 Download PDFInfo
- Publication number
- WO2011043003A1 WO2011043003A1 PCT/JP2010/000552 JP2010000552W WO2011043003A1 WO 2011043003 A1 WO2011043003 A1 WO 2011043003A1 JP 2010000552 W JP2010000552 W JP 2010000552W WO 2011043003 A1 WO2011043003 A1 WO 2011043003A1
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- WIPO (PCT)
- Prior art keywords
- light
- light guide
- support member
- guides
- light source
- Prior art date
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Classifications
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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
- G02B6/0075—Arrangements of multiple light guides
- G02B6/0078—Side-by-side arrangements, e.g. for large area displays
-
- 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
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- 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
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0051—Diffusing sheet or layer
Definitions
- the present invention is, for example, in a liquid crystal display device, a surface used for a backlight provided with a side edge (also referred to as a side light) type light guide plate for emitting light from a light source in a plane by a light guide plate in order to achieve thinning.
- the present invention relates to a light source device.
- a backlight having a side edge (also referred to as a side light) type light guide plate for emitting light from a light source in a planar shape by a light guide plate is widely used.
- the illumination device 100 disclosed in Patent Document 1 includes a light guide plate including a plurality of light guides 111 arranged in a line. And a plurality of light sources 101 provided for each of the light guides 111 of the light guide plate 110 and irradiating the light guides 111 with light.
- the light source 101 is composed of one red LED (Light Emitting Diode) 101R, two green LEDs 101G, and one blue LED 101B.
- a reflective sheet 102 is provided below the light guide plate 110. Then, a gap 103 made of an air layer of 0.1 ⁇ m or more is formed between adjacent light guides 111. With this configuration, pseudo impulse type display can be performed.
- Patent Document 2 also discloses a light emitter structure of the same type.
- Japanese Patent Publication No. 2008-34372 Japanese patent publication "Japanese Patent Application Laid-Open No. 2009-43706 (February 28, 2009)"
- the clearance 103 is about 1 to 2 mm. is necessary.
- the support member Since the support member is provided to support the light guides at a predetermined interval as shown in FIG. 12, the support member does not transmit light (such as highly reflective PC (polycarbonate)).
- the light guide In the case where the light guide is close to each other, the light emitted from the side wall of the light guide is blocked in the region X where the light guides are close to each other. Since the light emitted from the light source is blocked, the brightness decreases. As a result, the light and shade are clearly separated before and after the position at which the support member is provided, resulting in uneven brightness.
- the present invention has been made in view of the above-described conventional problems, and its object is to provide a surface light source device capable of reducing the occurrence of uneven brightness due to a support member supporting a light guide, and the same It is in providing an electronic device.
- the surface light source device of the present invention comprises a plurality of light guides provided with gaps respectively in parallel in the longitudinal direction, and at least one of the light guides in the longitudinal direction.
- a plurality of light sources for respectively causing light to enter from the end face of the light guide, and a light exit side of the light guide for extracting the light guided inside the light guide, or a reflection sheet side opposite to the light exit side
- a plurality of light path conversion parts and a support member for supporting the light guides at predetermined intervals are provided, and the support member is made of a member having light transparency and light scattering property.
- the supporting member for supporting the light guides at a predetermined interval is made of a member having the light transmitting property and the light scattering property, thereby lowering the luminance in the gap between the light guides. It can prevent. That is, since the support member has the light transmission property, it does not block the light emitted from the side wall surface of the light guide, and the light scattering property causes the light emitted from the side wall surface to be scattered. Thus, the light having the uniformed brightness is emitted in the gaps formed between the light guides.
- a plurality of light guides provided with gaps respectively in parallel to the longitudinal direction, and a plurality of light incident respectively from at least one end face in the longitudinal direction of the light guide And a plurality of light path conversion parts provided on the light emission side of the light guide for extracting light guided inside the light guide, or on the reflection sheet side which is the opposite side thereof.
- the support member is disposed between the light guides, and has a fixing member that fixes the light guides by sandwiching one light guide from both sides.
- the support member is disposed between the light guides, and includes the fixing member that fixes the light guide by sandwiching one light guide from both sides.
- the fixing member is present in the gap formed between the light guides, and the light guides can be reliably supported at predetermined intervals.
- the support member since the support member has the light transmission property and the light scattering property, it blocks the light emitted from the side wall of the light guide even if the fixing member is present in the gap between the light guides. There is no That is, even if the fixing member is present in the gap between the light guides, it is possible to suppress the decrease in luminance due to the fixing member.
- the fixing member is preferably made of an elastic body having an urging force on the side of the light guide to be held.
- the fixing member is made of an elastic body having an urging force on the side of the light guide to be held, so that the light guide can be reliably supported from the side.
- a plurality of light guides provided with a gap in parallel to the longitudinal direction, and a plurality of light sources for respectively causing light to be incident from at least one end face in the longitudinal direction of the light guide.
- a plurality of light path conversion parts provided on the light emission side of the light guide or on the opposite side of the light reflection sheet to take out light guided inside the light guide, and the light guide
- a support member for supporting the bodies at a predetermined distance, wherein the support member is a member having light transparency and light scattering property to support the light guides at a predetermined distance.
- FIG. 1 It is a schematic sectional drawing which shows schematic structure of the surface light source device (light source module) of this invention. It is a disassembled perspective view of the liquid crystal display device which used the surface light source device shown in FIG. 1 as a light source module. It is sectional drawing which shows the structure in part in the said liquid crystal display device. It is a top view which shows the structure of the light-guide plate in the said light source module.
- the light source module provided with the said light-guide plate is shown, Comprising: It is sectional drawing which shows the optical path in the edge part in the several light guide which has a defect
- FIG. 7 It is a top view which shows an example of the shape of a supporting member. It is a side view of a support member shown in Drawing 7 (a). It is a bottom view of a support member shown in Drawing 7 (a). It is a side view of a support member shown in Drawing 7 (a). It is a top view which shows the other example of the shape of a supporting member. It is a side view of a support member shown in Drawing 8 (a). It is a bottom view of a support member shown in Drawing 8 (a). It is a top view which shows the luminance nonuniformity which generate
- FIG. 11 It is a top view which shows the structure of the conventional light source module. It is a front view which shows the structure of the light source module shown to Fig.11 (a). It is a B-B 'line sectional view shown in Drawing 11 (a). It is a schematic sectional drawing which shows the state which supported the light guide by the supporting member in the conventional light source module.
- FIG. 2 shows an exploded perspective view of the liquid crystal display device 1.
- the liquid crystal display device 1 includes a chassis 2, a light source module (surface light source device) 10, a liquid crystal panel 3, and a bezel 4 in this order from the bottom.
- the optical sheet group 16 may not be present in the present invention.
- the LED 12 and the LED substrate 13 and the reflector 14 are provided at the end of the light guide plate 20 as shown in FIG. 3, whereby the light from the LED 12 is incident on one end face 21 a of the light guide plate 20
- the liquid crystal panel 3 is irradiated with light from the exit surface 21 d of the light plate 20 through the diffusion plate 15 and the optical sheet group 16. Therefore, the light source module 10 according to the present embodiment adopts a side edge (also referred to as side light) method.
- the liquid crystal display device 1 has a problem of blurring of moving images as compared with a CRT (Cathode-Ray Tube) display device. That is, in the CRT display device, since there is a non-emission period in which the pixel does not emit light between the emission period of the pixel in a certain frame and the emission period of this pixel in the next frame, the afterimage feeling is small. On the other hand, since the display method of the liquid crystal display device 1 is a "hold type" without such a non-emission period, an afterimage is generated, and the afterimage is recognized by the user as blur of a moving image.
- CTR Cathode-Ray Tube
- the light source module 10 which is the back light is divided, and sequentially turned off in synchronization with the timing of applying the video signal to the liquid crystal panel 3, image display and image display Backlight blinking has been proposed, which is a technique for inserting a black display between them.
- pseudo impulse type display can be realized, and the afterimage can be suppressed.
- the light source module 10 is configured by dividing the light guide plate 20 by a plurality of light guides 21.
- the bodies 21... Are disposed in parallel with each other in the longitudinal direction with gaps 22. Therefore, in the present embodiment, as shown in FIG. 3, the LED 12 is configured to allow light to be incident from a thick portion 21 c described later on one end face 21 a in the longitudinal direction of each light guide 21.
- the light may be made to enter from the other end face in the longitudinal direction, not necessarily to one end face 21a, and light may be made to enter from both the one end face 21a and the other end face. That is, in the present invention, it is sufficient to make light incident from at least one end face 21a.
- the clearance 22 is about 1 to 2 mm. is necessary.
- FIG. 10 showing a mechanism for emitting light from the light guide 21.
- the light traveling in the light guide 21 collides with the light scatterer 23 so that the angle traveling in the light guide 21 changes, the total reflection condition is broken, and the light exit surface
- the light is emitted to the outside of the light guide 21 from the facing surface 21 e facing the light emitting surface 21 d or the light emitting surface 21 d.
- the distance between the facing surface 21 e and the reflection sheet 11 is substantially small, light emitted from the facing surface 21 e of the light guide 21 is reflected by the reflection sheet 11 as shown by solid arrows in FIG. Then, the light is re-incident on the light guide 21, reflected by the side wall surface 21g, and re-emitted from the exit surface 21d.
- Each of 21 b is thinner than a thick portion 21 c as a central portion of a cross section orthogonal to the longitudinal direction in the light guide 21.
- the light guide 21 according to the present embodiment has the defect portion 21f on the emission side or the reflection sheet side at the side end portion and has a substantially T-shaped cross section, and the thick portion 21c formed thickly.
- thin-walled portions 21b and 21b formed thin.
- the light guide 21 is disposed such that the thin portions 21 b and 21 b are on the side of the reflection sheet 11. That is, the defect portion 21 f is provided on the emission side of the light guide 21.
- the defective portion 21 f exists on the light emission side of the thin portions 21 b and 21 b of the light guide 21, a large gap is formed between the light emitting surface 21 d and the diffusion plate 15 in the vicinity of the gap 22. Can be provided.
- the light traveling in the light guide 21 collides with the light scatterer 23 so that the angle traveling in the light guide 21 changes, and the total reflection condition is broken.
- the light is reflected by the reflection sheet 11 provided on the facing surface 21e, and is emitted to the outside of the light guide 21 from the emission surface 21d of the thin portion 21b.
- the diffusion plate 15 it is possible to easily illuminate the upper side of the gap 22 between the light guides 21 and 21. Therefore, unevenness in the gap 22 is unlikely to occur.
- the diffusion plate 15 is provided above the emission surface 21 d of the light guide 21 with a distance D of, for example, 2 mm. Thereby, as compared with the case where the diffusion plate 15 is in close contact with the emission surface 21 d of the light guide 21, the luminance unevenness can be reduced.
- the plurality of light guides 21 provided with the gaps 22 in parallel in the longitudinal direction and at least one of the light guides 21 in the longitudinal direction
- the plurality of LEDs 12 which respectively receive light from the end face 21 a of the light guide 21 and the reflection sheet 11 on the light emission side of the light guide 21 for extracting the light guided inside the light guide 21 or the opposite side thereof
- a plurality of light scatterers 23 as light path conversion units provided on the side are provided.
- the thin portions 21b and 21b as the side ends of the cross section orthogonal to the longitudinal direction of the light guide 21 are thinner than the thick portions 21c as the central portion of the cross section orthogonal to the longitudinal direction of the light guide 21. It is formed.
- the plurality of light guides 21 constituting the light guide plate 20 are provided with the gaps 22 in parallel in the longitudinal direction. The light irradiation in the gap 22 is reduced, and uneven brightness occurs as a whole of the light guide plate.
- the thin portions 21b and 21b of the cross section orthogonal to the longitudinal direction of the light guide 21 are thinner than the thick portions 21c and 21c of the cross section orthogonal to the longitudinal direction of the light guide 21. It is done. For this reason, in each of the thin portions 21b and 21b, the missing portion 21f of the light guide 21 is formed.
- the light emitted from the light guide 21 or the reflected light of the light by the reflection sheet 11 passes through the defect portion 21f of the light guide 21.
- the gap 22 between the light guides 21 can be illuminated without re-incident light guide 21.
- the light source module 10 can be provided that can avoid the lack of luminance in the gap 22 and can reduce the occurrence of uneven luminance.
- the thin portions 21b and 21b of the light guide 21 are thinly formed by providing the defective portion 21f on the emission side of the light guide 21. It is possible.
- the light emitted from the light guide 21 does not enter the light guide 21 again by passing through the defect portion 21f of the light guide 21.
- the gap between the light guides 21 can be illuminated.
- the reduction in luminance can be suppressed even if the gap 22 between the light guides 21 becomes somewhat large, the light guides 21 are not fixed but are disposed as they are. If it does, it will shift from a predetermined position, luminance unevenness will occur, and it will become difficult to perform pseudo impulse type display appropriately.
- a plurality of support members 31 for supporting each light guide 21 at a predetermined position is provided below the light guide plate 20 (on the side of the reflection sheet 11). There is.
- the support member 31 has fixing members 31a,... For fixing the light guide 21 so as to sandwich one light guide 21 from both sides.
- fixing members 31a For fixing the light guide 21 so as to sandwich one light guide 21 from both sides.
- a case where two light guides 21 are supported by one support member 31 will be described.
- the details of the shape of the support member 31 will be described later.
- the support member 31 When the support member 31 is provided to support the light guide 21, if the material of the support member 31 is a material that shields the light emitted from the light guide 21, the light guide is performed at the portion where the support member 31 is provided. The light emitted from the light body 21 does not illuminate the diffusion plate 15, which causes a decrease in luminance.
- the support member 31 is formed of a member having light transparency and light scattering.
- this member it is preferable to be formed of a member having a light scattering characteristic like the diffusion plate 15 disposed on the light exit surface.
- the support member 31 is formed of a member having light permeability and light scattering property, occurrence of uneven brightness due to the support member 31, in particular, brightness due to the fixing member 31a of the support member 31. It becomes possible to suppress the occurrence of unevenness. The reason for this will be described below.
- the support member 31 is provided so that the fixing member 31 a is disposed between the thin portions 21 b and 21 b of the light guide 21 (the gap 22).
- the support member 31 does not transmit light (such as highly reflective polycarbonate)
- the light and shade are clearly separated before and after the support member 31, resulting in uneven brightness. That is, uneven brightness due to the fixing member 31 a of the support member 31 is generated.
- the supporting member 31 has the light transmitting property so as not to block the light emitted from the side wall surface 21 g of the light guide 21, and by having the light scattering property, the supporting member 31 is separated from the side wall surface 21 g. By scattering the emitted light, it is possible to irradiate the light whose brightness is uniformed to the gap 22 between the light guides 21.
- the fixing member 31a of the support member 31 is disposed between the light guides 21 so as to fix the light guide 21 so as to sandwich one light guide 21 from both sides.
- the fixing member 31a is present in the gap 22 between the light guides 21 and 21. Therefore, each light guide 21 can be reliably supported at a predetermined interval.
- the supporting member 31 is made of a member having the same optical characteristics as the diffusion plate 15, the optical characteristics of the supporting member 31 and the optical characteristics of the diffusion plate 15 become the same. It is possible to make the reduction of the brightness in the gap between them more noticeable.
- FIG. 6A is a plan view of the light guides 21 with the diffusion plate removed and viewed from the top, in which the fixing members 31a with different manufacturing materials are exposed.
- FIG. 6B is a plan view of the state shown in FIG. 6A as viewed through the diffusion plate 15.
- the light from the light guide is not blocked on the side of the fixing member 31 a made of the same material as the diffusion plate 15, so uneven brightness due to decreased brightness may be caused. It turns out that it can be suppressed.
- the support member 31 As described above, it is preferable to manufacture the support member 31 with the same material as the diffusion plate 15 used together, from the viewpoint of reducing the unevenness in luminance, but if the unevenness in luminance due to the support member 31 is reduced, It is sufficiently effective to produce the light transmitting material and the light scattering material only.
- the material of the support member 31 it is preferable to use the same material as the material of the diffusion plate 15 which is the diffusion member, so PC (polycarbonate), PS (polystyrene), PMMA (polymethacrylic acid) which is the material of the diffusion plate 15. Methyl) and the like. Further, a material that utilizes the scattering property of the material itself, a material obtained by adding a scattering component such as silica to a light transmitting material, or a material provided with a scattering shape on the surface may be used as the material of the support member 31.
- the diffusion plate 15 and the support member 31 used in the present invention are not limited to these materials as long as they have a scattering property and a light transmitting property, for example, a light transmitting fiber braided, etc. May be used as a light scattering member.
- the light source module 10 configured as described above, in addition to the occurrence of uneven brightness due to the material of the support member 31, there is also the occurrence of uneven brightness due to the light guide shifting from the predetermined position. For example, even if the material of the support member 31 is appropriately set to suppress the decrease in luminance, if the light guide deviates from the predetermined position, uneven brightness occurs on the emission surface of the light source module. As described above, when the luminance unevenness occurs on the exit surface of the light source module, the display of the pseudo impulse type can not be appropriately performed in the liquid crystal display device, and as a result, the display quality is degraded.
- the support member 31 has a fixing member 31a on both sides of the light guide supporting surface (surface) of the substantially rectangular base 31c and the center. Are provided, and hook members 31b are provided on both sides of the back surface of the base (fixed plate) 31c and at the center.
- One light guide 21 is supported by a fixing member 31a provided at one end of the surface of the base 31c and a fixing member 31a provided at the center so as to be supported and fixed, and the other end of the surface of the base 31c is
- the light guide 21 is supported and fixed in such a way as to sandwich the one light guide 21 by the provided fixing member 31 a and the fixing member 31 a provided at the center. Therefore, in the above example, the two light guides 21 are supported and fixed by one support member 31.
- hooking members 31b,... Provided on the back surface of the base 31c are engaged with the hooking holes (not shown) provided on the side of the chassis 2 (FIG. 2), respectively. It is fixed to 2.
- the support member 31 In order to fix the support member 31 to the chassis 2, it is necessary to open a part of the reflection sheet 11 interposed between the support member 31 and the chassis 2. For example, an opening is provided in the reflective sheet 11 so that only the support portion 31a of the support member 31 can be projected, and the portion of the support member 31c is disposed below the reflective sheet. Thereby, the difference (step) in surface height between the reflective sheet 11 and the base 31 c of the support member 31 can be eliminated as compared with the case where the support member 31 is simply disposed on the reflective sheet 11, and the formation of the reflective sheet 11 Since the surface can be kept as flat as possible, it is possible to eliminate reflection unevenness in the reflection sheet 11.
- the fixing member 31a has a shape in which the tip end portion is bent to the side for sandwiching the light guide 21, and as shown in FIG. 7B, the thin portion 21b of the light guide 21 is pressed by the tip portion. There is.
- the fixing member 31a is formed into an arc shape in cross section, and the thin-walled portion 21b of the light guide 21 is sandwiched on the side of the arched protrusion. It is conceivable.
- the support member 31 shown in FIGS. 8 (a) to 8 (c) except for the shape of the fixing member 31a, the same shape as each part of the support member 31 shown in FIGS. 7 (a) to 7 (d). It is.
- the fixing member 31a is formed by an elastic body to which an urging force is applied in the direction in which the light guide 21 is sandwiched. Since the biasing force is applied not from the upper surface of the thin portion 21b of the light guide 21 but from the side of the thin portion 21b, the light guide 21 can be reliably fixed without any risk of breakage of the thin portion 21b. .
- the support member 31 having the above configuration in the light source module 10 having the above configuration, the positional deviation of the light guide 21 can be reliably prevented, so that the occurrence of uneven brightness due to the positional deviation is suppressed. It can be done. As a result, since the occurrence of uneven brightness on the exit surface of the light source module 10 is suppressed, it is possible to appropriately perform pseudo impulse type display in the liquid crystal display device.
- the present invention relates to a light source module provided with a side edge (also referred to as side light) type light guide plate for emitting light from a light source in a planar manner by a light guide plate, and an electronic device provided with the same
- the present invention is applicable to electronic devices such as surface light source devices and liquid crystal display devices as light source modules.
- Liquid Crystal Display (Electronic Equipment) 2 chassis 3 liquid crystal panel 4 bezel 10 light source module (surface light source device) 11 Reflective sheet 12 LED (light source) 13 LED substrate 14 reflector 15 diffuser plate (light path conversion part) DESCRIPTION OF SYMBOLS 16 optical sheet group 20 light-guide plate 21 light-guide body 21a end surface 21b thin part 21c thick-walled part 21d output surface 21e opposing surface 21f defect part 21g side wall surface 22 clearance 23 light-scattering body (light path conversion part) 31 support member 31 a fixing member 31 b hooking member 31 c base (fixed plate)
Abstract
Description
2 シャーシ
3 液晶パネル
4 ベゼル
10 光源モジュール(面光源装置)
11 反射シート
12 LED(光源)
13 LED基板
14 リフレクタ
15 拡散板(光路変換部)
16 光学シート群
20 導光板
21 導光体
21a 端面
21b 薄肉部
21c 厚肉部
21d 出射面
21e 対向面
21f 欠損部
21g 側壁面
22 隙間
23 光散乱体(光路変換部)
31 支持部材
31a 固定部材
31b 掛止部材
31c 基体(固定板)
Claims (4)
- 長手方向に対して並列にそれぞれ隙間を有して設けられた複数の導光体と、
上記導光体における長手方向の少なくとも一方の端面から光をそれぞれ入射させる複数の光源と、
上記導光体の内部にて導光される光を取り出すために該導光体における光の出射側、又はその反対側である反射シート側に複数設けられている光路変換部と、
上記導光体同士を所定の間隔で支持するための支持部材とを備え、
上記支持部材は、光透過性及び光散乱性を有する部材からなることを特徴とする面光源装置。 - 長手方向に対して並列にそれぞれ隙間を有して設けられた複数の導光体と、
上記導光体における長手方向の少なくとも一方の端面から光をそれぞれ入射させる複数の光源と、
上記導光体の内部にて導光される光を取り出すために該導光体における光の出射側、又はその反対側である反射シート側に複数設けられている光路変換部と、
上記導光体から出射された光を拡散する拡散部材と
上記導光体同士を所定の間隔で支持するための支持部材とを備え、
上記支持部材は、上記拡散部材と同じ光学特性を有することを特徴とする面光源装置。 - 上記支持部材は、
導光体同士の間に配置され、一つの導光体を両側から挟みこむようにして当該導光体を固定する固定部材を有していることを特徴とする請求項1または2に記載の面光源装置。 - 上記固定部材は、挟み込む対象となる導光体側に付勢力を有する弾性体からなることを特徴とする請求項3に記載の面光源装置。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MX2010008348A MX2010008348A (es) | 2009-10-09 | 2010-01-29 | Dispositivo de fuente de luz plana. |
RU2010132150/07A RU2010132150A (ru) | 2009-10-09 | 2010-01-29 | Планарное устройство источника света |
BRPI1001230A BRPI1001230A2 (pt) | 2009-10-09 | 2010-01-29 | dispositivo de fonte de luz planar |
US12/865,313 US8303153B2 (en) | 2009-10-09 | 2010-01-29 | Planar light source device |
CN2010800010431A CN102105739A (zh) | 2009-10-09 | 2010-01-29 | 面光源装置 |
EP10734887A EP2351962A1 (en) | 2009-10-09 | 2010-01-29 | Surface light source device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009-235739 | 2009-10-09 | ||
JP2009235739A JP4560579B1 (ja) | 2009-10-09 | 2009-10-09 | 面光源装置 |
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WO2011043003A1 true WO2011043003A1 (ja) | 2011-04-14 |
Family
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PCT/JP2010/000552 WO2011043003A1 (ja) | 2009-10-09 | 2010-01-29 | 面光源装置 |
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US (1) | US8303153B2 (ja) |
EP (1) | EP2351962A1 (ja) |
JP (1) | JP4560579B1 (ja) |
CN (1) | CN102105739A (ja) |
BR (1) | BRPI1001230A2 (ja) |
MX (1) | MX2010008348A (ja) |
RU (1) | RU2010132150A (ja) |
WO (1) | WO2011043003A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11709394B2 (en) | 2021-07-29 | 2023-07-25 | Nichia Corporation | Light-emitting module and planar light source |
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JP4781483B1 (ja) * | 2010-02-26 | 2011-09-28 | シャープ株式会社 | 導光板装置、光源装置、表示装置及びテレビ受像装置 |
KR101769045B1 (ko) * | 2010-06-14 | 2017-08-17 | 엘지이노텍 주식회사 | 표시 장치 |
EP2587112A4 (en) * | 2010-06-24 | 2014-07-09 | Sharp Kk | BACKLIGHT UNIT AND LIQUID CRYSTAL DISPLAY DEVICE |
JP5699808B2 (ja) * | 2011-05-27 | 2015-04-15 | 株式会社リコー | 導光部材、原稿照明装置、画像読取装置および画像形成装置 |
CN102654260B (zh) | 2011-09-29 | 2014-09-03 | 北京京东方光电科技有限公司 | 一种背光源和液晶显示器 |
CN102865511A (zh) * | 2012-09-14 | 2013-01-09 | 深圳市华星光电技术有限公司 | 直下式背光模组 |
JP2014082065A (ja) * | 2012-10-15 | 2014-05-08 | Skg:Kk | 導光部材 |
KR101454757B1 (ko) * | 2012-10-29 | 2014-10-27 | 코닝정밀소재 주식회사 | 광확산판, 이의 제조방법, 및 이를 포함하는 led 조명기구 |
KR101405049B1 (ko) | 2013-02-08 | 2014-06-13 | 희성전자 주식회사 | 백라이트 장치 |
CN103672746B (zh) * | 2013-12-20 | 2017-01-11 | 深圳市华星光电技术有限公司 | 导光板、背光模组及液晶显示装置 |
DE202014000264U1 (de) * | 2014-01-10 | 2015-04-13 | Novomatic Ag | Leuchtvorrichtung |
WO2015136625A1 (ja) * | 2014-03-11 | 2015-09-17 | 堺ディスプレイプロダクト株式会社 | 光源装置、表示装置、及び光源装置の製造方法 |
JP6205647B2 (ja) * | 2014-05-23 | 2017-10-04 | コニカミノルタ株式会社 | 導光体、照明装置及び画像読み取り装置 |
CN204853358U (zh) * | 2015-08-11 | 2015-12-09 | 合肥京东方显示光源有限公司 | 一种限位结构、背光模组和显示装置 |
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JP2008034372A (ja) | 2006-06-30 | 2008-02-14 | Toshiba Corp | 照明装置及び液晶表示装置 |
JP2009043706A (ja) | 2007-05-16 | 2009-02-26 | Rohm & Haas Denmark Finance As | Lcdディスプレイのための細長い発光体構造 |
JP2009110794A (ja) * | 2007-10-30 | 2009-05-21 | Goyo Paper Working Co Ltd | 面光源及びこの面光源に用いる導光体 |
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TWI232321B (en) | 2002-04-22 | 2005-05-11 | Mitsubishi Rayon Co | Plane light source and light transmission body using the plane light source |
JP4716754B2 (ja) | 2005-02-25 | 2011-07-06 | 三菱レイヨン株式会社 | 面光源装置及びそれに用いる導光体及びその製造方法 |
US7876393B2 (en) | 2006-06-01 | 2011-01-25 | Sharp Kabushiki Kaisha | Surface-area light source and LCD device having light guide plate with a side surface having a staircase shape in which a plurality of light emitting devices are fixed to respective steps thereof |
CN101329472B (zh) | 2007-06-18 | 2010-11-03 | 奇菱科技股份有限公司 | 发光装置及其制造方法 |
US8047669B2 (en) * | 2009-07-31 | 2011-11-01 | Skc Haas Display Films Co., Ltd. | Backlight illumination assembly having a joining clip with diffusion means |
JP2011040278A (ja) * | 2009-08-11 | 2011-02-24 | Sony Corp | 面状照明装置 |
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2009
- 2009-10-09 JP JP2009235739A patent/JP4560579B1/ja not_active Expired - Fee Related
-
2010
- 2010-01-29 BR BRPI1001230A patent/BRPI1001230A2/pt not_active IP Right Cessation
- 2010-01-29 MX MX2010008348A patent/MX2010008348A/es active IP Right Grant
- 2010-01-29 RU RU2010132150/07A patent/RU2010132150A/ru not_active Application Discontinuation
- 2010-01-29 US US12/865,313 patent/US8303153B2/en not_active Expired - Fee Related
- 2010-01-29 WO PCT/JP2010/000552 patent/WO2011043003A1/ja active Application Filing
- 2010-01-29 EP EP10734887A patent/EP2351962A1/en not_active Withdrawn
- 2010-01-29 CN CN2010800010431A patent/CN102105739A/zh active Pending
Patent Citations (3)
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JP2008034372A (ja) | 2006-06-30 | 2008-02-14 | Toshiba Corp | 照明装置及び液晶表示装置 |
JP2009043706A (ja) | 2007-05-16 | 2009-02-26 | Rohm & Haas Denmark Finance As | Lcdディスプレイのための細長い発光体構造 |
JP2009110794A (ja) * | 2007-10-30 | 2009-05-21 | Goyo Paper Working Co Ltd | 面光源及びこの面光源に用いる導光体 |
Cited By (1)
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US11709394B2 (en) | 2021-07-29 | 2023-07-25 | Nichia Corporation | Light-emitting module and planar light source |
Also Published As
Publication number | Publication date |
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RU2010132150A (ru) | 2013-11-20 |
JP2011082123A (ja) | 2011-04-21 |
US8303153B2 (en) | 2012-11-06 |
US20120182761A1 (en) | 2012-07-19 |
BRPI1001230A2 (pt) | 2016-09-27 |
JP4560579B1 (ja) | 2010-10-13 |
CN102105739A (zh) | 2011-06-22 |
EP2351962A1 (en) | 2011-08-03 |
MX2010008348A (es) | 2011-05-27 |
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