JP2009016359A - Support unit of light guide plate - Google Patents

Support unit of light guide plate Download PDF

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JP2009016359A
JP2009016359A JP2008259820A JP2008259820A JP2009016359A JP 2009016359 A JP2009016359 A JP 2009016359A JP 2008259820 A JP2008259820 A JP 2008259820A JP 2008259820 A JP2008259820 A JP 2008259820A JP 2009016359 A JP2009016359 A JP 2009016359A
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guide plate
light
light guide
support unit
led
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Shinichi Miyashita
信一 宮下
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Citizen Electronics Co Ltd
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Citizen Electronics Co Ltd
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  • Planar Illumination Modules (AREA)
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a support unit of a light guide plate which includes a light source and can support one end of the light guide plate of a thin type in a cantilever and can easily be fixed. <P>SOLUTION: The support unit of a light guide plate includes a base board 92 on which an LED 24 is mounted and a pinching portion 93 with a channel shaped projecting from the base board 92 in a light emitting direction of the LED 24, and the pinching portion 93 is molded of a transparent resin material pinching one side face of the light guide plate 22 and the one side face of the light guide plate 22 is pinched and supported by the pinching portion 93, and light from the LED 24 is guided into the light guide plate 22 and emitted from a surface of the light guide plate 22. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、携帯電話や携帯情報端末等に備える液晶パネル面を照明する導光板の支持ユニットに関するものである。   The present invention relates to a support unit for a light guide plate that illuminates a liquid crystal panel surface provided in a mobile phone, a portable information terminal, or the like.

従来、液晶等の表示装置にあっては、表示部を明るく照明するためのバックライト装置が使用されている。このバックライト装置は、表示部である液晶パネルの背面に配置される導光板と、この導光板の側方に配置される発光素子（ＬＥＤ）や冷陰極管等の光源とによって構成されている。このような構成からなるバックライト装置は、導光板の側面から光を入射させるため、導光板の厚み方向に光源を配置しなくてよいので、装置全体を薄型化することができる。ただし、導光板のような薄い部材の側方から光を取り込む構造であるため、受光効率があまり良好ではない。このような問題を改善するために、光源自体の発光強度を高めるか、光源を導光板に近接して配置するといった方法がとられる。また、特許文献１に示すように、光源と導光板の側面との間に集光レンズを配置し、光源から発せられる光を効率よく導光板内に導かせるような提案もなされている。
特開平７−１１４０２４号公報 Conventionally, in a display device such as a liquid crystal display, a backlight device for brightly illuminating a display unit is used. This backlight device includes a light guide plate disposed on the back surface of a liquid crystal panel as a display unit, and a light source such as a light emitting element (LED) or a cold cathode tube disposed on the side of the light guide plate. . In the backlight device having such a configuration, since light is incident from the side surface of the light guide plate, it is not necessary to arrange a light source in the thickness direction of the light guide plate, so that the entire device can be thinned. However, the light receiving efficiency is not so good because the light is taken in from the side of a thin member such as a light guide plate. In order to improve such a problem, a method of increasing the light emission intensity of the light source itself or arranging the light source close to the light guide plate is taken. Also, as shown in Patent Document 1, a proposal has been made to arrange a condensing lens between a light source and a side surface of a light guide plate to efficiently guide light emitted from the light source into the light guide plate.
Japanese Patent Laid-Open No. 7-114024

しかしながら、前記特許文献１に示されるようなバックライト構造にあっては、集光用のレンズを別途配置しなければならないため、部品点数の増加によってコストが嵩むと共に、レンズの形状や配置の調整による製造工数も増加するといった問題があった。このようなことから、導光板及びバックライト装置全体の薄型化が制限されていた。また、導光板の側方から光を入射した場合に、光源に近い箇所は輝度が高く、遠くなるほど輝度が低下するため輝度ムラが発生するといった問題もあった。   However, in the backlight structure as shown in Patent Document 1, since a condensing lens must be separately arranged, the cost increases due to an increase in the number of parts, and adjustment of the shape and arrangement of the lens There was a problem that the number of manufacturing man-hours increased. For this reason, thinning of the entire light guide plate and backlight device has been limited. In addition, when light is incident from the side of the light guide plate, there is a problem in that brightness is high at a location close to the light source, and brightness decreases as the distance increases.

また、従来の導光板は、アクリル板を使用した硬質部材で形成されているため、平板形状が一般的であるが、これでは曲面部を有する表示装置に対して均一に照射できないといった問題がある。   In addition, since the conventional light guide plate is formed of a hard member using an acrylic plate, a flat plate shape is generally used, but there is a problem in that it cannot uniformly irradiate a display device having a curved surface portion. .

そこで、本発明の目的は、薄型化した場合にも受光及び発光効率を高めることができる導光板に対して受光効率を高めながら簡易に支持することのできる導光板の支持ユニットを提供することである。   Accordingly, an object of the present invention is to provide a support unit for a light guide plate that can be easily supported while improving light reception efficiency with respect to a light guide plate that can improve light reception and light emission efficiency even when the thickness is reduced. is there.

上記課題を解決するために、本発明による導光板の支持ユニットは、発光素子が実装される基板及びこの基板から前記発光素子の発光方向へ突出する断面コ字状に形成された挟持部を有し、前記挟持部は、導光板の一側面を挟み込む透明な樹脂材によって形成され、前記挟持部に前記導光板の一側面を挟んで支持させることによって、前記発光素子から前記導光板内に光を導き、該導光板の表面から出射させることを特徴とする。   In order to solve the above problems, a support unit for a light guide plate according to the present invention has a substrate on which a light emitting element is mounted and a sandwiching portion formed in a U-shaped cross section that protrudes from the substrate in the light emitting direction of the light emitting element. The sandwiching portion is formed of a transparent resin material that sandwiches one side surface of the light guide plate. The sandwiching portion is supported by sandwiching one side surface of the light guide plate so that light is emitted from the light emitting element into the light guide plate. And is emitted from the surface of the light guide plate.

この発明によれば、導光板が組み込まれる支持体に発光素子及び導光板を挟み込む挟持部が備えられているので、導光板のセット及び発光素子との位置決め作業を簡易且つ正確に行うことができる。   According to the present invention, since the holding portion for sandwiching the light emitting element and the light guide plate is provided on the support body in which the light guide plate is incorporated, the setting operation of the light guide plate and the positioning operation with the light emitting element can be performed easily and accurately. .

また、前記挟持部を透明な樹脂材で形成することで、発光素子から発せられる光を効率よく導光板の受光面から入射させることができる。さらに、前記挟持部の上面及び下面に遮光部材を配設した場合は、前記導光板の受光面以外の方向に発散する光漏れを抑えることができる。   Moreover, the light emitted from the light emitting element can be efficiently incident from the light receiving surface of the light guide plate by forming the sandwiching portion with a transparent resin material. Furthermore, when light shielding members are provided on the upper and lower surfaces of the sandwiching portion, light leakage that diverges in a direction other than the light receiving surface of the light guide plate can be suppressed.

以下、添付図面に基づいて本発明に係る導光板の支持ユニットの実施形態を詳細に説明する。   Hereinafter, embodiments of a light guide plate support unit according to the present invention will be described in detail with reference to the accompanying drawings.

図１は、本発明の第１実施形態に係る導光板２２を備えた表示装置２１の構成を示したものである。この表示装置２１は、表示体である液晶パネル２３と、この液晶パネル２３の背面に配置される導光板２２と、この導光板２２の一側面に近接して配置される光源（ＬＥＤ２４）とを備えている。   FIG. 1 shows a configuration of a display device 21 including a light guide plate 22 according to the first embodiment of the present invention. The display device 21 includes a liquid crystal panel 23 as a display body, a light guide plate 22 disposed on the back surface of the liquid crystal panel 23, and a light source (LED 24) disposed in the vicinity of one side surface of the light guide plate 22. I have.

前記液晶パネル２３は、搭載する電子機器の形状に合わせて曲面形成されており、それに合わせて導光板２２も曲面状に形成されている。この導光板２２は、厚みが０．１ｍｍ程度の透明若しくは半透明のポリエチレンテレフタレート（ＰＥＴ）、シリコーン又はポリイミドのような可撓性を備えたシート部材で形成されており、自由な形状に折曲げが可能となっている。また、導光板２２の表面には、液晶パネル２３に向けて光を散乱させるための光散乱部３０が複数形成されている。   The liquid crystal panel 23 is formed into a curved surface according to the shape of the electronic device to be mounted, and the light guide plate 22 is also formed into a curved surface according to the shape. The light guide plate 22 is formed of a sheet member having flexibility such as transparent or translucent polyethylene terephthalate (PET), silicone or polyimide having a thickness of about 0.1 mm, and is bent into a free shape. Is possible. A plurality of light scattering portions 30 for scattering light toward the liquid crystal panel 23 are formed on the surface of the light guide plate 22.

このような構成からなる表示装置２１にあっては、点状光源であるＬＥＤ２４の発光面２９から照射される光を導光板２２の一側面に備える受光部２６で受けて、導光板２２全体を面状に発光させて液晶パネル２３を照明する。その際、前記導光板２２が変形可能となっているので、液晶パネル２３の裏面に密着させて配設することができる。さらに、前記導光板２２の表面に光散乱部３０が形成されているので、前記ＬＥＤ２４の光量不足、受光漏れあるいはＬＥＤ２４からの距離による減衰を補強して輝度アップを図ることができ、これによって、液晶パネル２３を明るく照明させることができる。また、導光板２２の受光面２６を除いた側面及び裏面に白色塗料やメッキ等による光反射部材を設けることで、液晶パネル２３への照射効率を高めて全体的な輝度アップを図ることができる。   In the display device 21 having such a configuration, light received from the light emitting surface 29 of the LED 24 that is a point light source is received by the light receiving unit 26 provided on one side surface of the light guide plate 22, and the entire light guide plate 22 is received. The liquid crystal panel 23 is illuminated by emitting light in a planar shape. At this time, since the light guide plate 22 can be deformed, it can be disposed in close contact with the back surface of the liquid crystal panel 23. Furthermore, since the light scattering portion 30 is formed on the surface of the light guide plate 22, it is possible to reinforce the brightness by reinforcing the LED 24 with insufficient light quantity, light reception leakage or attenuation due to the distance from the LED 24. The liquid crystal panel 23 can be illuminated brightly. Further, by providing light reflecting members such as white paint or plating on the side surface and the back surface of the light guide plate 22 excluding the light receiving surface 26, it is possible to improve the irradiation efficiency to the liquid crystal panel 23 and increase the overall luminance. .

前記光散乱部３０は、図２に示すように、前記導光板２２の表面に直接加工を施した凹部３０ａ（ａ），凸部３０ｂ（ｂ），微細な溝部３０ｃ（ｃ）や、（ｄ）に示すように、導光板２２の表面に光拡散剤が混入された光拡散シート３０ｄを貼着して形成される。また、（ｅ）に示すように導光板２２に貫通孔３０ｅを設け、この貫通孔３０ｅでの光の屈折あるいは反射を利用して部分的に輝度を高めるといったことが可能である。前記図１では一つの光散乱部３０を円形パターンで形成したが、図３（ａ）に示すように、ＬＥＤ２４に対向した直線パターンや図３（ｂ）に示すようなチェックパターンで形成してもよい。また、前記光散乱部３０の大きさ及び配置は、ＬＥＤ２４から遠ざかるにしたがって大きく、また、配置間隔を詰めることで、液晶パネル２３に対する輝度の均一化を図ることができる。   As shown in FIG. 2, the light scattering portion 30 includes a concave portion 30a (a), a convex portion 30b (b), a fine groove portion 30c (c), and (d ), A light diffusing sheet 30d mixed with a light diffusing agent is adhered to the surface of the light guide plate 22 and formed. Further, as shown in (e), it is possible to provide a through hole 30e in the light guide plate 22 and partially increase the luminance by utilizing refraction or reflection of light in the through hole 30e. In FIG. 1, one light scattering portion 30 is formed in a circular pattern, but as shown in FIG. 3A, it is formed by a linear pattern facing the LED 24 or a check pattern as shown in FIG. Also good. Further, the size and arrangement of the light scattering section 30 are increased as the distance from the LED 24 increases, and the luminance with respect to the liquid crystal panel 23 can be made uniform by reducing the arrangement interval.

図４及び図５は本発明の第２実施形態に係る導光板３２を備えた表示装置３１の構成を示したものである。この実施形態の導光板３２は、一枚の薄い導光本体部２５の一側面にＬＥＤ２４からの光を受ける肉厚の受光部２６が一体形成されたものである。   4 and 5 show the configuration of the display device 31 including the light guide plate 32 according to the second embodiment of the present invention. The light guide plate 32 of this embodiment is formed by integrally forming a light receiving portion 26 having a thickness for receiving light from the LED 24 on one side surface of a thin light guide main body portion 25.

前記受光部２６は、ＬＥＤ２４からの光を受ける受光面２７と、この受光面２７から前記導光本体部２５の表面及び裏面の中心に向けてテーパ状に絞り込まれた導光部２８とで一体形成されている。なお、前記受光面２７の厚みは、ＬＥＤ２４の大きさによって適宜設定されるが、前記導光本体部２５の厚みが０．１ｍｍの場合は、受光面２７の厚みを０．３ｍｍ以上に設定するのが好ましい。   The light receiving unit 26 is integrally formed with a light receiving surface 27 that receives light from the LED 24 and a light guide unit 28 that is narrowed in a tapered shape from the light receiving surface 27 toward the center of the front surface and the back surface of the light guide main body 25. Is formed. The thickness of the light receiving surface 27 is appropriately set according to the size of the LED 24. When the thickness of the light guide main body 25 is 0.1 mm, the thickness of the light receiving surface 27 is set to 0.3 mm or more. Is preferred.

図５に示したように、前記導光板３２は、受光面２７の中心がＬＥＤ２４の発光面２９の中心と略一致するように設置される。そして、前記ＬＥＤ２４の発光面２９から放射された光は、受光面２７に照射され、円錐状に絞り込まれた導光部２８を経て導光本体部２５内に拡散される。このように、導光本体部２５の側面にＬＥＤ２４の発光面２９と略同じ面積を有する受光面２７を備えたことによって、ＬＥＤ２４で発光した光を漏れなく入射させることができる。したがって、導光本体部２５を薄く形成した場合でも、光量を低下させることなくその表面を均一且つ明るく発光させることが可能となった。   As shown in FIG. 5, the light guide plate 32 is installed such that the center of the light receiving surface 27 substantially coincides with the center of the light emitting surface 29 of the LED 24. The light emitted from the light emitting surface 29 of the LED 24 is irradiated onto the light receiving surface 27 and diffused into the light guide main body 25 through the light guide 28 narrowed in a conical shape. Thus, by providing the light receiving surface 27 having substantially the same area as the light emitting surface 29 of the LED 24 on the side surface of the light guide main body 25, the light emitted from the LED 24 can be incident without leakage. Therefore, even when the light guide main body portion 25 is formed thin, it is possible to emit light uniformly and brightly without reducing the amount of light.

前記導光板３２は、単一のＬＥＤ２４を使用する場合の構成例であるが、バックライト用の光源の種類や形状あるいは使用形態に応じて様々な形態を取り得る。以下、図６乃至図８に他の実施形態における導光板について説明する。図６は第３実施形態の導光板４２を示したものである。図に示されるように、この導光板４２の受光部４６は、受光面４７の形状が前記導光板３２の受光面３７と同一の円形であり、導光部４８を前記受光面４７から放射状に広がるように導光本体部４５に向けて形成してある。受光部４６がこのような形状をとることで、前記導光板３２の受光部３６に比べて導光部４８の厚み及び表面積を大きくとることができる。このため、前記受光面４７から入射させた光を導光本体部４５に向けて広く拡散させることができる。また、導光部４８の底部が受光面４７と平行になっているので、前記受光面４７に入射した光を幅広く導光本体部４５に向けて伝播させることができる。   The light guide plate 32 is a configuration example in the case where a single LED 24 is used, but can take various forms depending on the type and shape of the light source for backlight or the usage pattern. Hereinafter, a light guide plate according to another embodiment will be described with reference to FIGS. FIG. 6 shows the light guide plate 42 of the third embodiment. As shown in the figure, the light receiving portion 46 of the light guide plate 42 has a light receiving surface 47 whose circular shape is the same as that of the light receiving surface 37 of the light guide plate 32, and the light guide portion 48 extends radially from the light receiving surface 47. The light guide body 45 is formed so as to spread. When the light receiving part 46 takes such a shape, the thickness and surface area of the light guide part 48 can be increased as compared with the light receiving part 36 of the light guide plate 32. For this reason, the light incident from the light receiving surface 47 can be diffused widely toward the light guide main body 45. Further, since the bottom of the light guide 48 is parallel to the light receiving surface 47, the light incident on the light receiving surface 47 can be propagated widely toward the light guide main body 45.

また、図７に示した第４実施形態の導光板５２の受光部５６は、受光面５７を横方向に長く形成した楕円形状をしており、導光部５８を前記受光面５７から放射状に広がるように導光本体部５５に向けてテーパ状に形成されている。この導光板５２によれば、受光面５７が横方向に広くなっているので、比較的サイズの大きなＬＥＤを配設した場合でも光を漏らさず有効に導光本体部５５に拡散させることができる。   In addition, the light receiving portion 56 of the light guide plate 52 of the fourth embodiment shown in FIG. 7 has an elliptical shape in which the light receiving surface 57 is formed long in the horizontal direction, and the light guide portion 58 is formed radially from the light receiving surface 57. It is formed in a tapered shape toward the light guide main body 55 so as to spread. According to this light guide plate 52, since the light receiving surface 57 is wide in the lateral direction, even when a relatively large LED is provided, light can be effectively diffused into the light guide main body 55 without leaking. .

また、図８に示した第５実施形態の導光板６２の受光部６６は、受光面６７が導光本体部６５の側面全体を均等に厚くした長方形状となっており、また、導光部６８が前記受光面６７から導光本体部６５の厚みに絞り込まれるようになだらかに傾斜している。このように前記受光面６７が導光本体部６５の側面全体に亘って形成されているので、ＬＥＤを前記受光面６７に沿って複数配設したり、ＬＥＤの代わりに棒状の蛍光管を配設するといった使用方法が可能であり、光量を多く取り入れる場合に適している。前記複数のＬＥＤや棒状の蛍光管等を使用して均等且つ平行に受光面６７に入光した場合は、そのまま導光部６８を通過して導光本体部６５に拡散される。このため、導光本体部６５をムラなく均等に照明することができる。   In addition, the light receiving portion 66 of the light guide plate 62 of the fifth embodiment shown in FIG. 8 has a light receiving surface 67 that has a rectangular shape in which the entire side surface of the light guide main body 65 is uniformly thickened. 68 is gently inclined so as to be narrowed down from the light receiving surface 67 to the thickness of the light guide main body 65. Thus, since the light receiving surface 67 is formed over the entire side surface of the light guide main body 65, a plurality of LEDs are arranged along the light receiving surface 67, or a rod-like fluorescent tube is arranged in place of the LEDs. It is suitable for the case where a large amount of light is taken in. When light is incident on the light receiving surface 67 evenly and in parallel using the plurality of LEDs, rod-shaped fluorescent tubes, etc., the light passes through the light guide portion 68 as it is and is diffused into the light guide body portion 65. For this reason, it is possible to illuminate the light guide main body 65 uniformly.

次に、前記第２実施形態乃至第５実施形態に示したような肉厚の受光部を備えた導光板において、さらに受光部における光拡散効果を図った導光板の実施形態を図９及び図１０に示す。図９は第６実施形態の導光板７２を示したものであり、ＬＥＤ２４からの光を受ける受光部７６をＶ字状に切削して形成したものである。このように切削することで、受光面７７が広がると共に、ＬＥＤ２４からの入射角を変化させることができるので、導光本体部７５の光拡散効果も高めることができる。図１０は第７実施形態の導光板８２を示したものである。この導光板８２は、受光部８６を構成する導光部８８に貫通孔８９を設けたものである。このような貫通孔８９を設けたことによって、受光面８７で受けた光が前記貫通孔８９の内壁面で反射あるいは屈折して導光本体部８５に拡散させることができる。   Next, in the light guide plate having the thick light receiving portion as shown in the second to fifth embodiments, an embodiment of the light guide plate that further achieves the light diffusion effect in the light receiving portion is shown in FIGS. 10 shows. FIG. 9 shows a light guide plate 72 of the sixth embodiment, which is formed by cutting a light receiving portion 76 that receives light from the LED 24 into a V shape. By cutting in this way, the light receiving surface 77 is widened and the incident angle from the LED 24 can be changed, so that the light diffusion effect of the light guide main body 75 can also be enhanced. FIG. 10 shows a light guide plate 82 of the seventh embodiment. In this light guide plate 82, a through hole 89 is provided in a light guide portion 88 that constitutes a light receiving portion 86. By providing such a through hole 89, the light received by the light receiving surface 87 can be reflected or refracted by the inner wall surface of the through hole 89 and diffused to the light guide main body 85.

なお、前記第２実施形態乃至第７実施形態に示した導光板に第１実施形態で示した導光板２２のように光拡散部３０を形成することで、部分的に発光強度を高めたり、弱めたりすることができる。   In addition, by forming the light diffusion portion 30 on the light guide plate shown in the second embodiment to the seventh embodiment like the light guide plate 22 shown in the first embodiment, the light emission intensity is partially increased, It can be weakened.

次に、前述した各実施形態における導光板と、この導光板をパッケージ内に支持するための支持部材とを備えた導光板支持ユニットについて説明する。図１１は前記第１実施形態の導光板２２と、この導光板２２を支持する支持部材９１からなる導光板支持ユニットの組み合わせ例を示したものである。支持部材９１は、ＬＥＤ２４を実装する基板９２と、この基板９２上に突出して設けられ、導光板２２を挟持する挟持部９３とで構成されている。前記基板９２はガラスエポキシ樹脂からなり、ＬＥＤ２４を実装するための一対の電極パターン（図示せず）が正面から左右側面及び背面の一部にかけて形成されている。一方、挟持部９３は透明な樹脂材でコ字状に形成され、前記基板９２上に一体形成される。前記挟持部９３は、基板９２に実装されたＬＥＤ２４の発光方向に延びる一対の挟持板９４ａ，９４ｂを備え、前記導光板２２が差し込み可能な間隔に設定されている。また、図１１（ｂ）に示したように、前記挟持部９３の上面及び下面に光の拡散を抑える遮光部材９６を配設することによって、ＬＥＤ２４から発せられる光を導光板２２の側面に対して集中的に照射させることができる。   Next, a light guide plate support unit including the light guide plate in each of the embodiments described above and a support member for supporting the light guide plate in the package will be described. FIG. 11 shows a combination example of the light guide plate support unit including the light guide plate 22 of the first embodiment and a support member 91 that supports the light guide plate 22. The support member 91 includes a substrate 92 on which the LED 24 is mounted, and a sandwiching portion 93 that projects from the substrate 92 and sandwiches the light guide plate 22. The substrate 92 is made of glass epoxy resin, and a pair of electrode patterns (not shown) for mounting the LEDs 24 are formed from the front to the left and right side surfaces and part of the back surface. On the other hand, the sandwiching portion 93 is formed in a U shape with a transparent resin material and is integrally formed on the substrate 92. The sandwiching portion 93 includes a pair of sandwiching plates 94a and 94b extending in the light emitting direction of the LEDs 24 mounted on the substrate 92, and is set at an interval at which the light guide plate 22 can be inserted. Further, as shown in FIG. 11B, the light emitted from the LED 24 is directed to the side surface of the light guide plate 22 by disposing the light shielding member 96 that suppresses the diffusion of light on the upper surface and the lower surface of the holding portion 93. Can be intensively irradiated.

前記構成からなる支持部材９１にあっては、ＬＥＤ２４を中心に一対の挟持板９４ａ，９４ｂが固定されているため、この挟持板９４ａ，９４ｂ間に導光板２２を差し込むだけでＬＥＤ２４の発光中心を導光板２２の側面の受光面に合わせることができる。図１２は側面に光拡散用のＶ字状の切り欠き部９５が形成された導光板１０２を前記支持部材９１に装着したものである。このように前記支持部材９１を用いることで、光拡散用の加工を施した受光面とＬＥＤ２４とを簡易且つ正確に位置合わせを行うことができる。また、前記支持部材９１では、導光板全体を片持ち支持する構造であると共に、その支持部分が発光するため、導光面を広くとることができる。   In the support member 91 having the above-described configuration, since the pair of sandwiching plates 94a and 94b are fixed around the LED 24, the light emission center of the LED 24 can be obtained simply by inserting the light guide plate 22 between the sandwiching plates 94a and 94b. It can be matched with the light receiving surface on the side surface of the light guide plate 22. In FIG. 12, a light guide plate 102 having a light diffusion V-shaped notch 95 formed on the side surface is mounted on the support member 91. Thus, by using the support member 91, the light receiving surface subjected to the light diffusion process and the LED 24 can be simply and accurately aligned. In addition, the support member 91 has a structure in which the entire light guide plate is cantilevered and the support portion emits light, so that the light guide surface can be widened.

以上説明したように、本発明に係る導光板の支持ユニットによれば、導光板の一端を片持ち支持する挟持部及び光源とが一体形成された支持部材を備えたことで、薄型の導光板を安定して支持することができると共に、光源との位置決め作業が容易となる。   As described above, according to the support unit of the light guide plate according to the present invention, the thin light guide plate is provided by including the support member integrally formed with the sandwiching portion that cantilever-supports one end of the light guide plate and the light source. Can be stably supported, and positioning with the light source is facilitated.

本発明に係る第1実施形態の導光板を備えた表示装置の分解斜視図である。1 is an exploded perspective view of a display device including a light guide plate according to a first embodiment of the present invention. 上記導光板に設ける光散乱部の各種形態を示す断面図である。It is sectional drawing which shows the various forms of the light-scattering part provided in the said light-guide plate. 上記光散乱部の配置例を示す平面図である。It is a top view which shows the example of arrangement | positioning of the said light-scattering part. 本発明に係る第２実施形態の導光板を備えた表示装置の分解斜視図である。It is a disassembled perspective view of the display apparatus provided with the light-guide plate of 2nd Embodiment which concerns on this invention. 上記図４の表示装置の断面図である。It is sectional drawing of the display apparatus of the said FIG. 本発明に係る第３実施形態の導光板の斜視図である。It is a perspective view of the light-guide plate of 3rd Embodiment which concerns on this invention. 本発明に係る第４実施形態の導光板の斜視図である。It is a perspective view of the light-guide plate of 4th Embodiment which concerns on this invention. 本発明に係る第５実施形態の導光板の斜視図である。It is a perspective view of the light-guide plate of 5th Embodiment which concerns on this invention. 本発明に係る第６実施形態の導光板の斜視図である。It is a perspective view of the light-guide plate of 6th Embodiment which concerns on this invention. 本発明に係る第７実施形態の導光板の斜視図である。It is a perspective view of the light-guide plate of 7th Embodiment which concerns on this invention. 導光板及び支持部材からなる導光板支持ユニットの斜視図及び断面図である。It is the perspective view and sectional drawing of the light guide plate support unit which consists of a light guide plate and a support member. 受光面に切り欠き部が形成された導光板と支持部材からなる導光板支持ユニットの斜視図である。It is a perspective view of the light-guide plate support unit which consists of a light-guide plate by which the notch part was formed in the light-receiving surface, and a support member.

符号の説明Explanation of symbols

２１，３１ 表示装置
２２，３２，４２，５２，６２，７２，８２ 導光板
２３ 液晶パネル（表示体）
２４ ＬＥＤ（光源）
２５，３５，４５，５５，６５，７５，８５ 導光本体部
２６，３６，４６，５６，６６，７６，８６ 受光部
２８，３８，４８，５８，６８，７８，８８ 導光部
３０ 光散乱部
21, 31 Display device 22, 32, 42, 52, 62, 72, 82 Light guide plate 23 Liquid crystal panel (display body)
24 LED (light source)
25, 35, 45, 55, 65, 75, 85 Light guiding body 26, 36, 46, 56, 66, 76, 86 Light receiving part 28, 38, 48, 58, 68, 78, 88 Light guiding part 30 Light Scattering part

Claims (5)

発光素子が実装される基板及びこの基板から前記発光素子の発光方向へ突出する断面コ字状に形成された挟持部を有し、
前記挟持部は、導光板の一側面を挟み込む透明な樹脂材によって形成され、
前記挟持部に前記導光板の一側面を挟んで支持させることによって、前記発光素子から前記導光板内に光を導き、該導光板の表面から出射させることを特徴とする導光板の支持ユニット。 A substrate on which the light emitting element is mounted, and a sandwiching portion formed in a U-shaped cross section that protrudes from the substrate in the light emitting direction of the light emitting element,
The clamping portion is formed of a transparent resin material that sandwiches one side surface of the light guide plate,
A support unit for a light guide plate, wherein light is guided from the light emitting element into the light guide plate and emitted from the surface of the light guide plate by supporting the sandwich portion with one side surface of the light guide plate interposed therebetween. 前記挟持部の上面及び下面に遮光部材を配設した請求項１記載の導光板の支持ユニット。 The light guide plate support unit according to claim 1, wherein a light shielding member is provided on an upper surface and a lower surface of the sandwiching portion. 前記導光板は、可撓性部材で形成されている請求項１記載の導光板の支持ユニット。 The light guide plate support unit according to claim 1, wherein the light guide plate is formed of a flexible member. 前記導光板は、曲面状に形成されている請求項１又は３のいずれかに記載の導光板の支持ユニット。 The light guide plate support unit according to claim 1, wherein the light guide plate is formed in a curved shape. 前記導光板の一側面にＶ字状の切り欠き部を設け、この切り欠き部と前記発光素子とが対向するようにして前記挟持部によって支持されている請求項１乃至４のいずれかに記載の導光板の支持ユニット。 5. The V-shaped cutout portion is provided on one side surface of the light guide plate, and the cutout portion and the light emitting element are supported by the sandwiching portion so as to face each other. Light guide plate support unit.
JP2008259820A 2008-10-06 2008-10-06 Support unit of light guide plate Pending JP2009016359A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012059612A (en) * 2010-09-10 2012-03-22 Dainippon Printing Co Ltd Surface light emitting device
JP2012064441A (en) * 2010-09-16 2012-03-29 Konica Minolta Opto Inc Lighting fixture
JP2017072837A (en) * 2015-10-08 2017-04-13 パナソニックＩｐマネジメント株式会社 Liquid crystal display
KR101873622B1 (en) * 2014-09-30 2018-07-02 컨티넨탈 오토모티브 시스템즈 인코포레이티드 Flexible lighting system and component illuminated by the system

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10247412A (en) * 1997-03-03 1998-09-14 Omron Corp Surface light source device
JPH1130775A (en) * 1997-07-11 1999-02-02 Rohm Co Ltd Structure of liquid crystal display device with back light
JP2000149608A (en) * 1998-11-11 2000-05-30 Ccs Kk Led and lighting system using the same
JP2000258633A (en) * 1999-03-05 2000-09-22 Omron Corp Light transmission device, display device and optical communication device
JP2002343124A (en) * 2001-05-15 2002-11-29 Mitsubishi Rayon Co Ltd Surface light source equipment
JP2002358259A (en) * 2001-05-31 2002-12-13 Toshiba Corp File server having priority control function, and file access method and file access program in the server
JP2004192911A (en) * 2002-12-10 2004-07-08 Arakawa:Kk Light source holder, surface light emitting device and display device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10247412A (en) * 1997-03-03 1998-09-14 Omron Corp Surface light source device
JPH1130775A (en) * 1997-07-11 1999-02-02 Rohm Co Ltd Structure of liquid crystal display device with back light
JP2000149608A (en) * 1998-11-11 2000-05-30 Ccs Kk Led and lighting system using the same
JP2000258633A (en) * 1999-03-05 2000-09-22 Omron Corp Light transmission device, display device and optical communication device
JP2002343124A (en) * 2001-05-15 2002-11-29 Mitsubishi Rayon Co Ltd Surface light source equipment
JP2002358259A (en) * 2001-05-31 2002-12-13 Toshiba Corp File server having priority control function, and file access method and file access program in the server
JP2004192911A (en) * 2002-12-10 2004-07-08 Arakawa:Kk Light source holder, surface light emitting device and display device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012059612A (en) * 2010-09-10 2012-03-22 Dainippon Printing Co Ltd Surface light emitting device
JP2012064441A (en) * 2010-09-16 2012-03-29 Konica Minolta Opto Inc Lighting fixture
KR101873622B1 (en) * 2014-09-30 2018-07-02 컨티넨탈 오토모티브 시스템즈 인코포레이티드 Flexible lighting system and component illuminated by the system
JP2017072837A (en) * 2015-10-08 2017-04-13 パナソニックＩｐマネジメント株式会社 Liquid crystal display

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