JP5467734B2 - Lighting device - Google Patents

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JP5467734B2
JP5467734B2 JP2008148288A JP2008148288A JP5467734B2 JP 5467734 B2 JP5467734 B2 JP 5467734B2 JP 2008148288 A JP2008148288 A JP 2008148288A JP 2008148288 A JP2008148288 A JP 2008148288A JP 5467734 B2 JP5467734 B2 JP 5467734B2
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JP2009295434A (en
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晋太郎 ▲濱▼
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Japan Display Inc
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Description

本発明は、電気光学装置等に用いて好適な照明装置の構造に関する。   The present invention relates to a structure of an illumination device suitable for use in an electro-optical device or the like.

現在、携帯電話機、携帯情報端末機、コンピュータディスプレイなどの電子機器において、映像を表示するために電気光学装置の一例としての液晶装置が広く用いられている。   Currently, a liquid crystal device as an example of an electro-optical device is widely used to display an image in electronic devices such as a mobile phone, a portable information terminal, and a computer display.

このような液晶装置では、液晶表示パネルを背面側から照明して透過表示を行うために、その液晶表示パネルの背面側にバックライト装置（照明装置）が設けられる。かかる照明装置は、液晶表示パネル等に対する光源の配置位置によって、直下型とエッジライト型の２つの方式に大別される。   In such a liquid crystal device, in order to perform transmissive display by illuminating the liquid crystal display panel from the back side, a backlight device (illumination device) is provided on the back side of the liquid crystal display panel. Such illumination devices are roughly classified into two types, a direct type and an edge light type, depending on the position of the light source with respect to the liquid crystal display panel or the like.

直下型の照明装置は、液晶表示パネルの背面側に光源を配置する方式の照明装置である。一方、エッジライト型の照明装置は、液晶表示パネルの背面側に光を導く導光板を配し、その導光板の側面部に光源を配置する方式の照明装置である。このうち、直下型の照明装置は、エッジライト型の照明装置と比較して、導光板を必要としないため、その分、コストを下げることができるといった利点がある。   The direct type lighting device is a lighting device of a type in which a light source is arranged on the back side of a liquid crystal display panel. On the other hand, an edge light type lighting device is a lighting device of a type in which a light guide plate that guides light is disposed on the back side of a liquid crystal display panel, and a light source is disposed on a side surface of the light guide plate. Among these, the direct type illumination device does not require a light guide plate as compared with the edge light type illumination device, and thus has an advantage that the cost can be reduced accordingly.

例えば、特許文献１及び２には、直下型のバックライト装置が記載されている。   For example, Patent Documents 1 and 2 describe a direct type backlight device.

特許文献１に記載のバックライト装置は、入射した色光を拡散して面状発光させる拡散板と、拡散板に入射する少なくとも赤色光、緑色光、青色光をそれぞれ発光する複数の発光ダイオードと、それらの発光ダイオードから発光された各色光を拡散板上の同一箇所に集光して白色光とする集光手段とを有する光源ユニットを備えている。そして、光源ユニットは、集光手段として、複数の発光ダイオードから発光された各色光を夫々集光する複数の集光レンズを有し、複数の集光レンズを介した各色光が拡散板上の同一箇所に集光されるように、複数の発光ダイオード及び複数の集光レンズの光軸が所定の角度で傾けて配置されている。   The backlight device described in Patent Literature 1 includes a diffusion plate that diffuses incident color light to emit planar light, a plurality of light emitting diodes that respectively emit at least red light, green light, and blue light incident on the diffusion plate; There is provided a light source unit having condensing means for condensing each color light emitted from the light emitting diodes at the same location on the diffusion plate to obtain white light. The light source unit has a plurality of condensing lenses for condensing each color light emitted from the plurality of light emitting diodes as a condensing unit, and each color light via the plurality of condensing lenses is on the diffusion plate. The optical axes of the plurality of light emitting diodes and the plurality of condensing lenses are arranged so as to be inclined at a predetermined angle so as to be condensed at the same location.

かかる構成により、色ムラがなく十分に混色された白色光となり、その白色光で液晶表示パネルを照明することで、液晶表示パネルに色再現性の良い画像を表示することができるとされている。   With such a configuration, white light that is sufficiently mixed with no color unevenness is obtained, and an image with good color reproducibility can be displayed on the liquid crystal display panel by illuminating the liquid crystal display panel with the white light. .

特許文献２に記載のバックライト装置は、光源としての複数の発光ダイオードと、各発光ダイオードを機械的に駆動することにより、各発光ダイオードから出射した光の空間的な光量分布を変化させる光量分布調整手段とを備えている。そして、光量分布調整手段は、各発光ダイオードが取り付けられた台座と、台座を回動させる回転軸とから構成されている。なお、発光ダイオードには、赤色光を発光する赤色発光ダイオード、緑色光を発光する緑色発光ダイオード、及び青色光を発光する青色発光ダイオードが含まれる。   The backlight device described in Patent Document 2 includes a plurality of light emitting diodes as light sources and a light amount distribution that changes a spatial light amount distribution of light emitted from each light emitting diode by mechanically driving each light emitting diode. Adjusting means. And the light quantity distribution adjusting means is comprised from the base to which each light emitting diode was attached, and the rotating shaft which rotates a base. The light emitting diode includes a red light emitting diode that emits red light, a green light emitting diode that emits green light, and a blue light emitting diode that emits blue light.

この構成によれば、光量分布調整手段の駆動、具体的には、台座をその延在方向に延びる回転軸の周囲に回動させることによって赤色発光ダイオード、緑色発光ダイオード、及び青色発光ダイオードの傾斜角度を時間変化させることが可能とされる。これにより、その各発光色の混色状態を調整することが可能となり、色ムラの発生を抑制することができるとされている。   According to this configuration, the light quantity distribution adjusting means is driven, specifically, the red light emitting diode, the green light emitting diode, and the blue light emitting diode are inclined by rotating the pedestal around the rotation axis extending in the extending direction. It is possible to change the angle with time. Thereby, it is possible to adjust the color mixture state of the respective emission colors, and to suppress occurrence of color unevenness.

特開２００６−２２８５７６号公報JP 2006-228576 A 特開２００６−３３９０４７号公報JP 2006-339047 A

ところで、上記した特許文献１に記載のバックライト装置では、拡散板上の同一箇所に集光されるように、複数の発光ダイオード及び複数の集光レンズの光軸が所定の角度で傾けて配置されている。   By the way, in the backlight device described in Patent Document 1 described above, the optical axes of the plurality of light emitting diodes and the plurality of condensing lenses are inclined at a predetermined angle so as to be condensed at the same location on the diffusion plate. Has been.

このため、この拡散板において、複数の発光ダイオードから出射された光が集光される領域では輝度が高くなるものの、複数の発光ダイオードから出射された光が集光されない領域では輝度が低くなる。特に、この拡散板の外周部は、複数の発光ダイオードから出射された光が集光されない領域となっており、その輝度は拡散板の内側の領域の輝度と比べて低くなっているものと考えられる。 For this reason, in this diffuser plate, the luminance is high in the region where the light emitted from the plurality of light emitting diodes is collected, but the luminance is low in the region where the light emitted from the plurality of light emitting diodes is not collected. In particular, the outer peripheral portion of the diffusion plate has a plurality of light emitting diodes are not light converged emitted from regions, as the brightness which is lower than the luminance of the inner side area of the diffuser plate Conceivable.

このように、拡散板において、輝度が高い領域と輝度が低い領域とが存在すると、これに起因して拡散板に輝度ムラが発生することになる。そうすると、このバックライト装置では、拡散板を通じて均一な輝度の光を液晶表示パネルに向けて照射することができない虞がある。   As described above, in the diffusion plate, when there are a high luminance region and a low luminance region, luminance unevenness occurs in the diffusion plate due to this. Then, in this backlight device, there is a possibility that light having uniform luminance cannot be irradiated toward the liquid crystal display panel through the diffusion plate.

また、上記した特許文献２に記載のバックライト装置では、台座をその延在方向に延びる回転軸の周囲に回動させることによって各発光ダイオードの傾斜角度を時間変化させて、色ムラの発生を抑制するようにしている。しかしながら、この構成によると、台座の延長線上に位置する拡散板の領域では、各発光ダイオードからの光が入射され難く、十分な輝度が得られない可能性がある。これにより、このバックライト装置では、上記した特許文献１に記載のバックライト装置と同様に、拡散板を通じて均一な輝度の光を液晶表示パネルに向けて照射することができない虞がある。   Further, in the backlight device described in Patent Document 2, the inclination angle of each light-emitting diode is changed over time by rotating the pedestal around a rotation shaft extending in the extending direction, thereby causing color unevenness. I try to suppress it. However, according to this configuration, it is difficult for light from each light-emitting diode to enter the region of the diffusion plate located on the extension line of the pedestal, and sufficient luminance may not be obtained. Accordingly, in this backlight device, similarly to the backlight device described in Patent Document 1 described above, there is a possibility that light with uniform luminance cannot be irradiated toward the liquid crystal display panel through the diffusion plate.

本発明は、以上の点に鑑みてなされたものであり、電気光学パネルに向けて均一な輝度の光を照射することが可能な直下型の照明装置を提供することを課題とする。 The present invention has been made in view of the above problems, and aims to provide a lighting equipment of the direct type capable of irradiating light with uniform brightness toward the electro-optical panel.

本発明の１つの観点では、照明装置は、複数の光源と、外辺に囲まれる平坦形状を有し、複数の光源を保持する基材と、を備え、複数の光源の各々は基材の一方の面側に行列状又は同心円状に配置されており、複数の光源には、基材の一方の面の中心領域に配置され、基材の一方の面の法線方向に光を出射する基準光源が含まれ、複数の光源の各々から出射される光の主出射方向と、基準光源の光の主出射方向とのなす角度は、当該光源の配置される位置が基準光源から外辺に向かうほど大きくなるように設定される。 In one aspect of the present invention, the illumination device includes a plurality of light sources has a flat shape surrounded by perimeter, comprising a substrate for holding a plurality of light sources, a plurality of light sources each of the base are arranged in a matrix or concentric shape on one side, the multiple light sources are arranged in a central region of one surface of a substrate, it emits light in the normal direction of the one side of the substrate includes reference light source that is a main emission direction of the light emitted from each of a plurality of light sources, the angle between the main direction of light emission standards light source, out of the position reference light source arranged in the light source It is set to as the size Kunar so towards the sides.

上記の照明装置は、複数の光源と、複数の光源を保持する基材と、を備える。光源としては、例えば白色光を発光するＬＥＤなどが好適である。基材としては、例えば配線基板が好適である。複数の光源の各々は基材の一方の面側に配置（例えば分散して配置）されている。複数の光源には基材の一方の面の法線方向に光を出射する基準光源が含まれる。そして、複数の光源の各々から出射される光の主出射方向と、基準光源の光の主出射方向とのなす角度は、当該光源の配置される位置が基準光源から外辺（外周辺、外周部、又は外側）に向かうほど大きい。ここで、光の主出射方向は、光線の進行の主方向である。また、光の主出射方向の軸は光の主進行方向の仮想軸である。好適な例では、電気光学装置は、一対の基板間に電気光学層を挟持してなる電気光学パネルと、電気光学パネルの一方の面側に配置された上記の照明装置と、を備える。 The illumination device includes a plurality of light sources and a base material that holds the plurality of light sources. For example, an LED that emits white light is suitable as the light source. As the base material, for example, a wiring board is suitable. Each of the plurality of light sources is arranged (for example, dispersedly arranged) on one surface side of the substrate. The plurality of light sources include a reference light source that emits light in the normal direction of one surface of the substrate. The angle between the main emission direction of the light emitted from each of the plurality of light sources and the main emission direction of the light of the reference light source is such that the position where the light source is arranged is the outer side (outer periphery, outer periphery) from the reference light source. Part or outside). Here, the main emission direction of light is the main direction of travel of light rays. The axis in the main light emission direction is a virtual axis in the main light traveling direction. In a preferred example, the electro-optical device includes an electro-optical panel in which an electro-optical layer is sandwiched between a pair of substrates, and the above-described illumination device arranged on one surface side of the electro-optical panel.

これにより、基準光源から外辺に向かうに従い、光源の各々からより多くの光が照射されることになる。その結果、電気光学パネルの外辺（表示領域と表示に寄与しない非表示領域との境界付近の領域を含む）の輝度を高くすることができると共に、電気光学パネルの表示領域の中央部とその表示領域の外辺との間における輝度ムラを抑制でき、電気光学パネルの表示領域における輝度の均一化を図ることができる。   Thus, more light is emitted from each of the light sources as it goes from the reference light source to the outer side. As a result, the luminance of the outer side of the electro-optical panel (including the area near the boundary between the display area and the non-display area that does not contribute to display) can be increased, and the central portion of the display area of the electro-optical panel and its Luminance unevenness between the outer periphery of the display area can be suppressed, and the luminance in the display area of the electro-optical panel can be made uniform.

さらに、基材の一方の面の中心から外辺に向かう少なくとも一つの方向に向かうに従い、光源の各々からより多くの光が照射されることになる。その結果、電気光学パネルの外周部（表示領域と表示に寄与しない非表示領域との境界付近の領域であって、且つ少なくとも一つの方向に位置する基材の外辺に対応する領域）の輝度を高くすることができると共に、電気光学パネルの表示領域の中央部とその表示領域の外周部との間における輝度ムラを抑制でき、電気光学パネルの表示領域における輝度の均一化を図ることができる。 Furthermore , as the light travels in at least one direction from the center of one surface of the substrate toward the outer side, more light is emitted from each of the light sources. As a result, the luminance of the outer periphery of the electro-optical panel (the area near the boundary between the display area and the non-display area that does not contribute to display and corresponding to the outer edge of the base material positioned in at least one direction) The luminance unevenness between the central part of the display area of the electro-optical panel and the outer peripheral part of the display area can be suppressed, and the luminance in the display area of the electro-optical panel can be made uniform. .

また、基準光源は基材の一方の面の中心領域に配置されるので、基材の中央領域からその外辺に向かうに従い、光源の各々からより多くの光が照射されることになる。 Further, since the reference light source is arranged in the central region of one side of the substrate, as it goes to the outer side from the central region of the substrate, so that more light is emitted from each light source.

上記の照明装置の他の態様では、基準光源の光の主出射方向と、複数の光源の光の主出射方向とのなす角度は、光源の配置される位置が基材の外辺に向かうほど順次大きくなる。この態様によれば、基準光源から外辺に向かうに従い、順次光源の各々からより多くの光が照射されることになる。 In another form of the above illumination device, the angle of the main radiation direction of the light standards source, the main emission direction of the plurality of light sources the light, the position to be arranged in the light source toward the perimeter of the base It becomes larger gradually. According to this embodiment, toward the outer side from the reference light source, so that more light from each of the sequential light sources are illuminated.

上記の照明装置の他の態様では、基準光源を有する光源パターン領域が基材の一方の面側に複数配置されている。好適な例では、光源パターン領域は、基準光源を含む複数の光源と、複数の光源を保持する基材と、を備えて構成される光源ユニットであることが好ましい。この態様によれば、パソコンなどの大画面用の照明装置として好適に用いることができる。 In another form of the above illumination device, the light source pattern region having a criteria light source is a plurality arranged on one side of the substrate. In a preferred example, the light source pattern region includes a plurality of light sources including the reference light source is preferably a light source unit configured to include a base material which holds the multiple light source. According to this aspect, it can be suitably used as a lighting device for a large screen such as a personal computer.

上記の照明装置の他の態様では、基材の一方の面には、行列状又は同心円状に配置された複数の凹部を有し、基材の一方の面に対する凹部内の各々の底面の傾斜角度は、基材の一方の面における基準光源が配置される位置から外辺に向かうほど大きくなる角度に設定され、複数の光源の各々の少なくとも一部は、凹部内の各々に配置されている。 In another form of the above illumination device, on one surface of a substrate, a matrix or concentric circles having the arrangement plurality of recesses are, the bottom surface of each concave portion against the one side of the substrate the inclination angle is set to one of the criteria source that put on a surface increases as toward the position located et perimeter that will be disposed angle of the substrate, at least a portion of each of the plurality of light sources, the concave portion It is arranged in each.

これにより、基準光源の光の主出射方向と、複数の光源の光の主出射方向とのなす角度が基材の一方の面における基準光源が配置される位置から外辺に向かうほど大きくなる角度となるように、光源の各々を基材の一方の面の凹部内に保持した状態で基材の一方の面に配置することが容易となる。 Thus, the main emitting direction of the light of the reference light source, the larger the angle between the main direction of emission of light of a plurality of light sources toward the position located et perimeter of the reference light source is Ru is disposed in one side of the substrate It becomes easy to arrange each of the light sources on one surface of the base material in a state where each of the light sources is held in the concave portion of the one surface of the base material so as to have an angle.

好適な例では、傾斜角度が基材の一方の面の中心から外辺に向かう少なくとも一つの方向に向かうほど大きくなる角度に設定されていることが好ましい。 In a preferred example, it is preferable that the inclination angle is set to an angle that increases as it goes in at least one direction from the center of one surface of the substrate toward the outer side.

これにより、基準光源の光の主出射方向と、複数の光源の光の主出射方向とのなす角度が基材の一方の面の中心から外辺に向かう少なくとも一つの方向に向かうほど大きくなる角度となるように、光源の各々を基材の一方の面の凹部内に保持した状態で基材の一方の面に配置することが容易となる。 As a result, the angle formed by the main emission direction of the light from the reference light source and the main emission direction of the light from the plurality of light sources becomes larger as going from at least one direction toward the outer side from the center of one surface of the substrate. It becomes easy to arrange | position on the one surface of a base material in the state hold | maintained in the recessed part of the one surface of a base material so that it may become.

上記の照明装置の他の態様では、複数の光源の各々は、当該光源の光の主出射方向の角度が基材の一方の面側に配置された基準光源を通る基準線に対して少なくとも線対称をなす角度となるように基材の一方の面に配置されている。 In another form of the above lighting device, each of the plurality of light sources, at least with respect to the reference line where the main emission direction of the angle of the light of the light source passes through one arranged criteria source on the side of the substrate It is arranged on one side of the substrate such that the angle formed line symmetrical.

上記の照明装置の他の態様では、光源の各々は、角度が基材の一方の面の中心を通る中心線に対して線対称をなす角度となるように基材の一方の面側に配置されている。 In another form of the above lighting device, each light source, one surface of the angular degree as the substrate an angle to form a line symmetry with respect to a center line passing through the center of one side of the substrate Is arranged.

上記の照明装置の他の態様では、複数の光源の各々は、当該光源の光の主出射方向の角度が基準光源の光の主出射方向に対して点対称をなす角度となるように基材の一方の面側に配置されている。 In another form of the above lighting device, each of the plurality of light sources, group as the main emission direction of the angle of the light of the light source is an angle formed with point symmetry with respect to the main emission direction of the light of criteria source It is arranged on one side of the material.

上記の照明装置の他の態様では、光源の各々は、角度が基材の法線に対して点対称をなす角度となるように基材の一方の面に配置されている。 In another form of the above lighting device, each light source, angles are arranged on one surface of the as substrate an angle to form a point symmetry with respect to the normal line of the substrate.

上記の照明装置の他の態様では、複数の光源が同心円状に配置されるとき、基材の一方の面において、円状に配列された一群の光源に対して外側に且つ隣り合う位置に円状に配列された他の一群の光源の各々は、内側の一群の光源の各々の間に対応する位置に配置されている。 In another form of the above lighting apparatus, Rutoki plurality of light sources are arranged concentrically, one surface of the base material, in and adjacent position outside with respect to a group of light sources arranged in a circle each of the other group of light sources arranged in a circle are arranged at positions corresponding to between each of the inner group of light sources.

この態様によれば、電気光学パネルの外周部の輝度をより高くすることができると共に、電気光学パネルの表示領域の中央部とその表示領域の外周部及び各隅との間における輝度ムラをより抑制でき、電気光学パネルの表示領域における輝度の均一化をより図ることができる。   According to this aspect, the luminance of the outer peripheral portion of the electro-optical panel can be further increased, and the luminance unevenness between the central portion of the display region of the electro-optical panel and the outer peripheral portion and each corner of the display region is further increased. Therefore, it is possible to make the luminance uniform in the display area of the electro-optical panel.

上記の照明装置の他の態様では、基材の一方の面には、複数の光源の各々を保持する保持面を備える保持部材が配置（例えば分散して配置）されており、基材の一方の面に対する保持部材の各々の保持面の傾斜角度は、基材の一方の面における基準光源が配置される位置から外辺に向かうほど大きくなる角度に設定され、複数の光源の各々は、保持部材の各々の保持面に当接して配置されていると共に、光源の各々から出射される光の主出射方向と、保持部材の各々の保持面に対する各法線方向とは略平行である。 In another aspect of the lighting apparatus, on one side of the substrate, and the holding member having a holding surface for holding each of the plurality of light sources are disposed (e.g. of variance with) one of the base each angle of inclination of the hold surface of the hold member against the surface is set to about larger angle toward the position located et perimeter of criteria source that put on one surface of the substrate Ru is arranged, each of the plurality of light sources is arranged closer in contact with each of the hold surfaces of the hold member, and the main emission direction of the light emitted from each of the light source, retain surface of each hold member Each normal direction with respect to is substantially parallel.

この態様によれば、光源の各々から出射される光の主出射方向と、基準光源の光の主出射方向とのなす角度を、基準光源が配置されるべき位置から外辺に向かうほど大きく設定するためには、基材の一方の面に対して所定の傾斜角度を有する保持部材の各々の保持面に対して、光源の各々を配置するだけでよい。よって、基材の一方の面に対する光源の配置が容易となる。 According to this embodiment, the main emission direction of the light emitted from each light source, the angle between the main emission direction of the light of the reference light source, the more toward the outer side from the position where the criteria light source is arranged largely In order to set, it is only necessary to arrange each of the light sources with respect to each holding surface of the holding member having a predetermined inclination angle with respect to one surface of the substrate. Therefore, the arrangement of the light source with respect to one surface of the substrate is facilitated.

上記の照明装置の他の態様では、基材の一方の面には、複数の光源の各々を保持する保持面を備える保持部材が配置（例えば分散して配置）されており、基材の一方の面に対する保持部材の各々の保持面の傾斜角度は、角度が基材の一方の面の中心から外辺に向かう少なくとも一つの方向に向かうほど大きくなる角度に設定され、複数の光源の各々は、保持部材の各々の保持面に当接して配置されていると共に、光源の各々から出射される光の領域の中心を通る中心軸と、保持部材の各々の保持面に対する各法線方向とは略平行である。 In another aspect of the lighting apparatus, on one side of the substrate, and the holding member having a holding surface for holding each of the plurality of light sources are disposed (e.g. of variance with) one of the base each angle of inclination of the hold surface of the hold member against the surface, the angles are set to at least one larger angle as it goes in the direction of towards the perimeter from the center of one side of the substrate, a plurality each light source is in each hold member hold face with being positioned against a central axis passing through the center of the area of the light emitted from each of light sources, each hold member and each direction normal to the hold surface are substantially parallel.

この態様によれば、光源の各々から出射される光の領域の中心を通る中心軸と、基材の一方の面の中心における法線と平行な平行線とのなす角度を、基材の一方の面の中心から外辺に向かう少なくとも一つの方向に向かうほど大きく設定するためには、基材の一方の面に対して所定の傾斜角度を有する保持部材の各々の保持面に対して、光源の各々を配置するだけでよい。よって、基材の一方の面に対する光源の配置が容易となる。   According to this aspect, the angle formed by the central axis passing through the center of the region of the light emitted from each of the light sources and the parallel line parallel to the normal line at the center of one surface of the base material is set to one of the base materials. In order to set larger as it goes to at least one direction from the center of the surface to the outer side, a light source is provided for each holding surface of the holding member having a predetermined inclination angle with respect to one surface of the base material. It is only necessary to arrange each of them. Therefore, the arrangement of the light source with respect to one surface of the substrate is facilitated.

以下、図面を参照して本発明を実施するための最良の形態について説明する。   The best mode for carrying out the present invention will be described below with reference to the drawings.

[第１実施形態]
（液晶装置の構成）
まず、図１及び図２（ａ）等を参照して、本発明の第１実施形態に係る、電気光学装置の一例としての液晶装置１００の構成について説明する。 [First embodiment]
(Configuration of liquid crystal device)
First, the configuration of a liquid crystal device 100 as an example of an electro-optical device according to the first embodiment of the present invention will be described with reference to FIG. 1 and FIG.

図１は、第１実施形態に係る液晶装置１００の概略構成を示す断面図である。図２（ａ）は、図１の観察側（観察者によって視認される側）から液晶装置１００の構成要素である照明装置５１を見た平面図を示す。図２（ａ）では、矩形状の平面形状を有する基板１２の一つの外辺１２ａを基準としたときに、時計回りに外辺１２ｂ、１２ｃ、１２ｄとする。なお、図１は、図２（ａ）における、外辺１２ａと外辺１２ｃを結ぶ線分を２分する中心線（又は基準線）Ｌ５に沿った断面図に対応していると共に、図２（ａ）では、便宜上、照明装置５１の要素である各種の光学シート及び支持部材１３の図示を省略している。   FIG. 1 is a cross-sectional view illustrating a schematic configuration of a liquid crystal device 100 according to the first embodiment. FIG. 2A is a plan view of the illumination device 51 that is a constituent element of the liquid crystal device 100 from the observation side (the side visually recognized by the observer) of FIG. In FIG. 2A, when one outer side 12a of the substrate 12 having a rectangular planar shape is used as a reference, the outer sides 12b, 12c, and 12d are clockwise. 1 corresponds to a cross-sectional view along the center line (or reference line) L5 that bisects the line segment connecting the outer side 12a and the outer side 12c in FIG. 2A, and FIG. In (a), illustration of the various optical sheets and the support member 13 which are the elements of the illuminating device 51 is abbreviate | omitted for convenience.

液晶装置１００は、液晶表示パネル５０と、液晶表示パネル５０の観察側とは逆側に配置され、液晶表示パネル５０を照明する直下型の照明装置５１と、を備える。   The liquid crystal device 100 includes a liquid crystal display panel 50 and a direct-type illumination device 51 that is disposed on the opposite side of the observation side of the liquid crystal display panel 50 and illuminates the liquid crystal display panel 50.

液晶表示パネル５０は、第１の基板１と第２の基板２とを枠状のシール材３を介して貼り合わせ、シール材３で区画される領域内に、電気光学層の一例としての液晶層４を狭持して構成される。液晶表示パネル５０の液晶層４側の面上には、例えば、ブラックマトリックス、カラーフィルタ、電極その他の多くの構成要素がマトリクス状（格子状）又はストライプ状（線状）に形成されるが、図１ではそれらの要素の図示を省略している。そして、液晶表示パネル５０におけるシール材３の内側には、画像を表示するための表示領域Ｖ１が形成されていると共に、液晶表示パネル５０の外縁と表示領域Ｖ１との間の領域は、表示に寄与しない非表示領域Ｖ２となっている。なお、本発明では、液晶表示パネル５０は、特定の構成に限定されず、周知の種々の構成を採り得る。   The liquid crystal display panel 50 includes a first substrate 1 and a second substrate 2 that are bonded to each other via a frame-shaped sealing material 3, and a liquid crystal as an example of an electro-optical layer in a region partitioned by the sealing material 3. The layer 4 is sandwiched. On the surface of the liquid crystal display panel 50 on the liquid crystal layer 4 side, for example, many components such as a black matrix, a color filter, an electrode, and the like are formed in a matrix (lattice) or stripes (linear). In FIG. 1, illustration of those elements is omitted. A display area V1 for displaying an image is formed inside the sealing material 3 in the liquid crystal display panel 50, and an area between the outer edge of the liquid crystal display panel 50 and the display area V1 is displayed. The non-display area V2 does not contribute. In the present invention, the liquid crystal display panel 50 is not limited to a specific configuration, and may adopt various known configurations.

照明装置５１は、各種の光学シートと、複数の光源１１と、基材の一例としての基板１２と、支持部材（フレーム）１３と、を備える。ここで、各種の光学シートには、光を拡散する第１の拡散板１４、光を集光するプリズムシート１５、光を拡散させる第２の拡散板１６が含まれる。但し、本発明では、各種の光学シートの構成は、特定の構成に限定されない。   The illumination device 51 includes various optical sheets, a plurality of light sources 11, a substrate 12 as an example of a base material, and a support member (frame) 13. Here, the various optical sheets include a first diffusion plate 14 that diffuses light, a prism sheet 15 that collects light, and a second diffusion plate 16 that diffuses light. However, in the present invention, the configuration of various optical sheets is not limited to a specific configuration.

支持部材１３は、矩形状の平面形状を有し且つ基板１２を支持する平坦部１３ａと、平坦部の外周部から外側に且つ第１の拡散板１４に向けて斜め方向に延在し、各種の光学シートを支持する延在部１３ｂと、を有する。   The support member 13 has a rectangular planar shape and supports the substrate 12, and extends obliquely from the outer periphery of the flat portion to the outside and toward the first diffusion plate 14. And an extending portion 13b for supporting the optical sheet.

基板１２は、複数の光源１１を保持すると共に、複数の光源１１に電力を供給する配線基板としての役割を有する。基板１２は、矩形状の平面形状及び平坦形状を有し、支持部材１３の平坦部１３ａに重ねて配置されている。基板１２の一方の面１２ｆには、複数の光源１１を保持するための複数の凹部１２ｆａが分散して形成されている。   The substrate 12 holds a plurality of light sources 11 and serves as a wiring substrate that supplies power to the plurality of light sources 11. The substrate 12 has a rectangular planar shape and a flat shape, and is disposed so as to overlap the flat portion 13 a of the support member 13. A plurality of concave portions 12fa for holding the plurality of light sources 11 are formed on one surface 12f of the substrate 12 in a dispersed manner.

複数の光源１１としては、例えば、白色光を発光する発光ダイオード（Light Emitting Diode）が好適である。各光源１１は、基板１２の一方の面１２ｆに設けられた各凹部１２ｆａ内に保持された状態で基板１２の一方の面１２ｆに分散して配置されている。各光源１１から発光された光（例えば白色光）Ｌは、各種の光学シート及び液晶表示パネル５０に向けて照射される。なお、基板１２の一方の面１２ｆに対する各光源１１の配置構造については後述する。   As the plurality of light sources 11, for example, light emitting diodes that emit white light are suitable. Each light source 11 is distributed and arranged on one surface 12f of the substrate 12 while being held in each recess 12fa provided on one surface 12f of the substrate 12. Light L (for example, white light) L emitted from each light source 11 is irradiated toward various optical sheets and the liquid crystal display panel 50. The arrangement structure of each light source 11 with respect to one surface 12f of the substrate 12 will be described later.

第１の拡散板１４は、支持部材１３の延在部１３ｂの端部により支持されている。このため、第１の拡散板１４と基板１２との間には一定の間隔ｄ１を有する空間Ｅが形成されている。このように、第１の拡散板１４と基板１２との間に一定の間隔ｄ１を設けている理由は、各光源１１から出射された光Ｌを第１の拡散板１４によってプリズムシート１５側へ拡散し易くするためである。プリズムシート１５は、第１の拡散板１４の液晶表示パネル５０側の面に重ねて配置されている。第２の拡散板１６は、プリズムシート１５の液晶表示パネル５０側の面に重ねて配置されている。プリズムシート１５にて集光された光Ｌをより拡散させるため、第２の拡散板１６は、第１の拡散板１４と比較して光の拡散率が高いものであることが好ましい。   The first diffusion plate 14 is supported by the end portion of the extending portion 13 b of the support member 13. For this reason, a space E having a constant distance d1 is formed between the first diffusion plate 14 and the substrate 12. Thus, the reason why the constant distance d1 is provided between the first diffusion plate 14 and the substrate 12 is that the light L emitted from each light source 11 is directed to the prism sheet 15 side by the first diffusion plate 14. This is to facilitate diffusion. The prism sheet 15 is disposed so as to overlap the surface of the first diffusion plate 14 on the liquid crystal display panel 50 side. The second diffusion plate 16 is disposed so as to overlap the surface of the prism sheet 15 on the liquid crystal display panel 50 side. In order to further diffuse the light L collected by the prism sheet 15, it is preferable that the second diffusion plate 16 has a higher light diffusion rate than the first diffusion plate 14.

以上の構成を有する液晶装置１００では、複数の光源１１から出射された光Ｌは、図１の破線矢印に示すように第１の拡散板１４に向けて進行し、第１の拡散板１４を透過することによって拡散した光Ｌとなる。そして、その拡散した光Ｌは、プリズムシート１５を透過することで集光し、その集光した光Ｌは、第２の拡散板１６に向けて進行する。そして、その集光した光Ｌは、第２の拡散板１６を透過することで拡散し、その拡散した光Ｌは、液晶表示パネル５０に向けて照射される。この際、液晶表示パネル５０において液晶層４の液晶分子の配向が制御されて、所望の表示画像が観察者によって視認される。   In the liquid crystal device 100 having the above configuration, the light L emitted from the plurality of light sources 11 travels toward the first diffusion plate 14 as indicated by the broken line arrows in FIG. The light L is diffused by being transmitted. The diffused light L is condensed by passing through the prism sheet 15, and the condensed light L travels toward the second diffusion plate 16. The condensed light L is diffused by passing through the second diffusion plate 16, and the diffused light L is irradiated toward the liquid crystal display panel 50. At this time, the orientation of the liquid crystal molecules of the liquid crystal layer 4 is controlled in the liquid crystal display panel 50, and a desired display image is visually recognized by an observer.

（基板に対する光源の配置構造）
次に、図１及び図２を参照して、第１実施形態に係る照明装置５１における、基板１２の一方の面１２ｆに対する各光源１１の配置構造について説明する。 (Light source arrangement structure on the substrate)
Next, with reference to FIGS. 1 and 2, the arrangement structure of the light sources 11 with respect to the one surface 12 f of the substrate 12 in the illumination device 51 according to the first embodiment will be described.

図２（ｂ）は、光源１１から出射される光Ｌの領域（本例では楕円体状の領域）１１Ｌと、その領域１１Ｌの中心を通る中心軸（破線部分）Ｌ３との関係を示す模式図である。なお、図２（ｂ）では、光源１１の中心軸と、その光Ｌの領域１１Ｌの中心軸Ｌ３とは同一直線上に位置している。なお、中心軸Ｌ３は、光源１１の光Ｌの主出射方向（光Ｌの進行の主方向）の軸（光Ｌの主進行方向の仮想軸）である。   FIG. 2B is a schematic diagram showing the relationship between a region 11L of light L emitted from the light source 11 (in this example, an ellipsoidal region) 11L and a central axis (broken line portion) L3 passing through the center of the region 11L. FIG. In FIG. 2B, the central axis of the light source 11 and the central axis L3 of the region 11L of the light L are located on the same straight line. The central axis L3 is an axis (a virtual axis of the main traveling direction of the light L) in the main emission direction of the light L of the light source 11 (the main direction of traveling of the light L).

第１実施形態では、複数の光源１１には、基板１２の法線Ｌ１の方向に光Ｌを出射する基準光源１１ｂが含まれる。基準光源１１ｂは、例えば基板１２の中心Ｏを通る中心領域に配置される。そして、光源１１は、基板１２の一方の面１２ｆに行列状に配置されている。具体的に、基板１２の一方の面１２ｆには、行列状に配置された複数の凹部１２ｆａが形成されており、各光源１１の少なくとも一部は、各凹部１２ｆａ内に保持されている。また、各光源１１は、基板１２の一方の面１２ｆの中心Ｏを通り、外辺１２ａから外辺１２ｃに向かう中心線（外辺１２ｂと外辺１２ｄを結ぶ線分を２分する中心線又は基準線）Ｌ４、及び、同じく中心Ｏを通り、外辺１２ｂから外辺１２ｄに向かう中心線Ｌ５のそれぞれに対して少なくとも線対称をなすように、基板１２の一方の面１２ｆに配置されている。   In the first embodiment, the plurality of light sources 11 include a reference light source 11 b that emits light L in the direction of the normal L <b> 1 of the substrate 12. The reference light source 11b is arranged in a central region that passes through the center O of the substrate 12, for example. The light sources 11 are arranged in a matrix on one surface 12 f of the substrate 12. Specifically, a plurality of recesses 12fa arranged in a matrix are formed on one surface 12f of the substrate 12, and at least a part of each light source 11 is held in each recess 12fa. Each light source 11 passes through the center O of one surface 12f of the substrate 12 and passes through the center line from the outer side 12a to the outer side 12c (a center line that bisects a line segment connecting the outer side 12b and the outer side 12d or The reference line is disposed on one surface 12f of the substrate 12 so as to be at least line symmetric with respect to the center line L5 and the center line L5 that passes through the center O and extends from the outer side 12b to the outer side 12d. .

特に、本発明では、液晶表示パネル５０の表示領域Ｖ１に対して均一な輝度の光Ｌが照明されるように、且つ液晶表示パネル５０の外周部（表示領域Ｖ１と非表示領域Ｖ２との境界付近の領域）に対して各光源１１からより多くの光Ｌが照射されるように、基板１２の一方の面１２ｆに対して各光源１１の傾斜角度などが調整された状態で配置される。   In particular, in the present invention, the light L having a uniform luminance is illuminated on the display region V1 of the liquid crystal display panel 50, and the outer peripheral portion of the liquid crystal display panel 50 (the boundary between the display region V1 and the non-display region V2). The light source 11 is arranged in a state in which the inclination angle of each light source 11 is adjusted with respect to one surface 12f of the substrate 12 so that more light L is emitted from each light source 11 to a nearby region.

そのために、本発明では、各光源１１から出射される光Ｌの主出射方向の軸（中心軸Ｌ３であり、以下、「主出射方向Ｌ３」とも呼ぶ）と、基準光源１１ｂの光Ｌの主出射方向（法線Ｌ１であり、以下、「主出射方向Ｌ１」とも呼ぶ。）又は当該主出射方向Ｌ１と平行な平行線Ｌ２とのなす角度は、基準光源１１ｂから外辺１２ａ、１２ｂ、１２ｃ、１２ｄに向かう少なくとも一つの方向に向かうほど大きくなるように設定される。即ち、各光源１１から出射される光Ｌの領域１１Ｌの中心を通る中心軸Ｌ３と、基板１２の一方の面１２ｆの中心Ｏにおける法線Ｌ１又は法線Ｌ１と平行な平行線Ｌ２とのなす角度は、基板１２の一方の面１２ｆの中心Ｏから外辺１２ａ、１２ｂ、１２ｃ、１２ｄに向かう少なくとも一つの方向に向かうほど大きくなるように設定される。   Therefore, in the present invention, the main emission direction axis of the light L emitted from each light source 11 (the central axis L3, hereinafter also referred to as “main emission direction L3”) and the main light L of the reference light source 11b. The emission direction (normal line L1, hereinafter also referred to as “main emission direction L1”) or the angle formed by the parallel emission line L2 parallel to the main emission direction L1 is determined from the reference light source 11b to the outer sides 12a, 12b, 12c. , 12d is set so as to increase in the at least one direction. That is, the center axis L3 passing through the center of the region 11L of the light L emitted from each light source 11 and the normal line L1 at the center O of one surface 12f of the substrate 12 or a parallel line L2 parallel to the normal line L1 are formed. The angle is set so as to increase toward the at least one direction from the center O of one surface 12f of the substrate 12 toward the outer sides 12a, 12b, 12c, 12d.

これを実現するため、第１実施形態では、基板１２の一方の面１２ｆに対する、各光源１１を保持する各凹部１２ｆａの底面の傾斜角度は、各光源１１から出射される光Ｌの主出射方向Ｌ３と、基準光源１１ｂの光Ｌの主出射方向Ｌ１（又は当該主出射方向Ｌ１と平行な平行線Ｌ２）とのなす角度が基板１２の一方の面１２ｆにおける基準光源１１ｂが配置されるべき位置（或いは、各光源１１の光Ｌの領域１１Ｌの中心軸Ｌ３と平行線Ｌ２とのなす角度が中心線Ｌ４）から外辺１２ｂ及び１２ｄのそれぞれに向かうほど大きく設定されるような角度とされる。これにより、当該角度が基板１２の一方の面１２ｆの中心Ｏを通る中心線Ｌ４、Ｌ５のそれぞれに対して線対称をなす角度となるように、各光源１１を基板１２の一方の面１２ｆに配置することが容易となる。   In order to realize this, in the first embodiment, the inclination angle of the bottom surface of each recess 12fa that holds each light source 11 with respect to one surface 12f of the substrate 12 is the main emission direction of the light L emitted from each light source 11. The position at which the reference light source 11b is to be disposed on the one surface 12f of the substrate 12 by the angle formed by L3 and the main emission direction L1 of the light L of the reference light source 11b (or a parallel line L2 parallel to the main emission direction L1). (Alternatively, the angle formed by the central axis L3 and the parallel line L2 of the region 11L of the light L of each light source 11 is set to an angle that increases with increasing distance from the central line L4 to the outer sides 12b and 12d. . As a result, each light source 11 is placed on one surface 12f of the substrate 12 so that the angle is symmetric with respect to each of the center lines L4 and L5 passing through the center O of the one surface 12f of the substrate 12. It becomes easy to arrange.

具体的には、第１実施形態では、各光源１１から出射される光Ｌの主出射方向Ｌ３と、基準光源１１ｂの光Ｌの主出射方向Ｌ１（又は当該主出射方向Ｌ１と平行な平行線Ｌ２）とのなす角度は、基準光源１１ｂを通る中心線Ｌ４から外辺１２ｂ及び１２ｄのそれぞれに向かうほど大きく設定されている。言い換えれば、各光源１１の光Ｌの領域１１Ｌの中心軸Ｌ３と平行線Ｌ２とのなす角度は、基板１２の一方の面１２ｆの中心Ｏを通る中心線Ｌ４を基準として、中心線Ｌ４から外辺１２ｂ及び１２ｄのそれぞれに向かうほど大きく設定されている。   Specifically, in the first embodiment, the main emission direction L3 of the light L emitted from each light source 11 and the main emission direction L1 of the light L of the reference light source 11b (or parallel lines parallel to the main emission direction L1). The angle formed by L2) is set to increase as it goes from the center line L4 passing through the reference light source 11b toward each of the outer sides 12b and 12d. In other words, the angle formed between the central axis L3 of the region 11L of the light L of each light source 11 and the parallel line L2 is outside the center line L4 with reference to the center line L4 passing through the center O of the one surface 12f of the substrate 12. It is set so as to increase toward each of the sides 12b and 12d.

即ち、第１実施形態では、基板１２の一方の面１２ｆの中心線Ｌ４を基準としたときに、中心線Ｌ４より外辺１２ｂ側の領域に配置された光源１１群は、中心線Ｌ４から外辺１２ｂに向かうほど、つまり図２（ａ）の矢印Ｙ１方向に向かうほど大きく設定されていると共に、中心線Ｌ４より外辺１２ｄ側の領域に配置された光源１１群は、中心線Ｌ４から外辺１２ｂに向かうほど、つまり図２（ａ）の矢印Ｙ２方向に向かうほど大きく設定されている。   That is, in the first embodiment, when the center line L4 of the one surface 12f of the substrate 12 is used as a reference, the light source 11 group disposed in the region on the outer side 12b side from the center line L4 is outside the center line L4. The light source 11 group that is set larger toward the side 12b, that is, toward the direction of the arrow Y1 in FIG. 2A, and the light source 11 group arranged in the region on the outer side 12d side from the center line L4 is located outside the center line L4. It is set to be larger toward the side 12b, that is, toward the direction of the arrow Y2 in FIG.

より具体的には、基板１２の一方の面１２ｆにおいて最も中央部に位置すると共に外辺１２ａから外辺１２ｃの方向にかけて配列された基準光源１１ｂを含む一群の光源１１ｓの各々は、光Ｌの領域１１Ｌの中心軸Ｌ３と平行線Ｌ２とのなす角度が０[°]に設定されている。つまり、一群の光源１１ｓにおいては、各光源１１の光Ｌの領域１１Ｌの中心軸Ｌ３と平行線Ｌ２とが同一直線上に位置している。   More specifically, each of the group of light sources 11s including the reference light source 11b positioned at the most central portion on the one surface 12f of the substrate 12 and arranged from the outer side 12a to the outer side 12c The angle formed by the central axis L3 of the region 11L and the parallel line L2 is set to 0 [°]. That is, in the group of light sources 11s, the central axis L3 and the parallel line L2 of the region 11L of the light L of each light source 11 are located on the same straight line.

また、一群の光源１１ｓを挟む位置に配置されると共に外辺１２ａから外辺１２ｃの方向にかけて配列され、且つ中心線Ｌ４から外辺１２ｂ及び外辺１２ｄのそれぞれに向かって傾斜する一群の光源１１ｔでは、各光源１１の光Ｌの領域１１Ｌの中心軸Ｌ３と平行線Ｌ２とのなす角度がα（＞０[°]）に設定されている。また、一群の光源１１ｔを挟む位置に配置されると共に外辺１２ａから外辺１２ｃの方向にかけて配列され、且つ中心線Ｌ４から外辺１２ｂ及び外辺１２ｄのそれぞれに向かって傾斜する一群の光源１１ｕでは、各光源１１の光Ｌの領域１１Ｌの中心軸Ｌ３と平行線Ｌ２とのなす角度がβ（＞α）に設定されている。また、一群の光源１１ｕを挟む位置に配置されると共に外辺１２ａから外辺１２ｃの方向にかけて配列され、且つ中心線Ｌ４から外辺１２ｂ及び外辺１２ｄのそれぞれに向かって傾斜する一群の光源１１ｖでは、各光源１１の光Ｌの領域１１Ｌの中心軸Ｌ３と平行線Ｌ２とのなす角度がγ（＞β）に設定されている。また、一群の光源１１ｖを挟む位置に配置されると共に外辺１２ａから外辺１２ｃの方向にかけて配列され、且つ中心線Ｌ４から外辺１２ｂ及び外辺１２ｄのそれぞれに向かって傾斜する一群の光源１１ｗでは、各光源１１の光Ｌの領域１１Ｌの中心軸Ｌ３と平行線Ｌ２とのなす角度がθ（＞γ）に設定されている。また、基準光源１１ｂの光Ｌの主出射方向である法線Ｌ１に対する各光源１１の傾き角度は、基板１２の外辺１２ｂ及び１２ｄのそれぞれに向かうほど順次又は段階的に大きくなっている。   A group of light sources 11t arranged at positions sandwiching the group of light sources 11s and arranged from the outer side 12a to the outer side 12c and inclined from the center line L4 toward the outer side 12b and the outer side 12d, respectively. Then, the angle formed by the central axis L3 of the region 11L of the light L of each light source 11 and the parallel line L2 is set to α (> 0 [°]). A group of light sources 11u arranged at positions sandwiching the group of light sources 11t and arranged from the outer side 12a to the outer side 12c and inclined from the center line L4 toward the outer side 12b and the outer side 12d. Then, the angle formed by the central axis L3 of the region 11L of the light L of each light source 11 and the parallel line L2 is set to β (> α). In addition, a group of light sources 11v arranged at positions sandwiching the group of light sources 11u and arranged from the outer side 12a to the outer side 12c and inclined from the center line L4 toward the outer side 12b and the outer side 12d, respectively. Then, the angle formed by the central axis L3 of the region 11L of the light L of each light source 11 and the parallel line L2 is set to γ (> β). In addition, a group of light sources 11w arranged at positions sandwiching the group of light sources 11v and arranged from the outer side 12a to the outer side 12c and inclined from the center line L4 toward the outer side 12b and the outer side 12d, respectively. Then, the angle formed by the central axis L3 of the region 11L of the light L of each light source 11 and the parallel line L2 is set to θ (> γ). In addition, the inclination angle of each light source 11 with respect to the normal L1 that is the main emission direction of the light L of the reference light source 11b increases sequentially or stepwise toward the outer sides 12b and 12d of the substrate 12.

こうした構成により、第１実施形態に係る液晶装置１００では、基準光源１１ｂが位置する中心線Ｌ４から外辺１２ｂ及び外辺１２ｄのそれぞれに向かうに従い、順次又は段階的に液晶表示パネル５０側に向けて各光源１１からより多くの光Ｌが照射されることになる。その結果、液晶表示パネル５０の外周部（表示領域Ｖ１と非表示領域Ｖ２との境界付近の領域であって、且つ外辺１２ｂ及び１２ｄに対応する領域）の輝度を高くすることができると共に、液晶表示パネル５０の表示領域Ｖ１の中央部とその表示領域Ｖ１の外周部との間における輝度ムラを抑制でき、液晶表示パネル５０の表示領域Ｖ１における輝度の均一化を図ることができる。   With this configuration, in the liquid crystal device 100 according to the first embodiment, the liquid crystal display panel 50 is directed toward the liquid crystal display panel 50 sequentially or stepwise from the center line L4 where the reference light source 11b is located toward each of the outer side 12b and the outer side 12d. Thus, more light L is emitted from each light source 11. As a result, the luminance of the outer peripheral portion of the liquid crystal display panel 50 (the region near the boundary between the display region V1 and the non-display region V2 and corresponding to the outer sides 12b and 12d) can be increased. The luminance unevenness between the central portion of the display region V1 of the liquid crystal display panel 50 and the outer peripheral portion of the display region V1 can be suppressed, and the luminance in the display region V1 of the liquid crystal display panel 50 can be made uniform.

なお、第１実施形態に係る照明装置５１では、基板１２の一方の面１２ｆにおいて、各光源１１と平面的に重ならない位置に、光を反射する反射部材（図１の矩形状の破線領域）７０を配置するようにしてもよい。これによれば、各光源１１から発光された光Ｌのうち第１の拡散板１４等に当たることによって反射された光を反射部材７０によって、第１の拡散板１４等の側へ再度反射させることができる。その結果、各光源１１から発光された光Ｌの利用効率を高めることができ、液晶表示パネル５０の輝度をより高めることができる。   In the illuminating device 51 according to the first embodiment, the reflecting member (rectangular broken line region in FIG. 1) that reflects light on the one surface 12f of the substrate 12 at a position that does not overlap the light sources 11 in a planar manner. 70 may be arranged. According to this, light reflected from the light L emitted from each light source 11 by hitting the first diffusion plate 14 or the like is reflected again by the reflecting member 70 toward the first diffusion plate 14 or the like. Can do. As a result, the utilization efficiency of the light L emitted from each light source 11 can be increased, and the luminance of the liquid crystal display panel 50 can be further increased.

[第２実施形態]
次に、図３を参照して、本発明の第２実施形態に係る液晶装置１００ａの構成について説明する。 [Second Embodiment]
Next, the configuration of the liquid crystal device 100a according to the second embodiment of the present invention will be described with reference to FIG.

図３は、図１に対応する、第２実施形態に係る液晶装置１００ａの構成を示す断面図である。   FIG. 3 is a cross-sectional view showing a configuration of a liquid crystal device 100a according to the second embodiment corresponding to FIG.

第２実施形態と第１実施形態とを比較した場合、その両者は、照明装置の構成のみが異なり、それ以外は同様である。よって、以下では、第１実施形態と同一の要素については同一の符号を付し、その説明は適宜省略する。   When comparing 2nd Embodiment and 1st Embodiment, both differ only in the structure of an illuminating device, and other than that is the same. Therefore, below, the same code | symbol is attached | subjected about the element same as 1st Embodiment, and the description is abbreviate | omitted suitably.

第１実施形態に係る照明装置５１では、基板１２が平坦形状を有していた。これに対して、第２実施形態に係る照明装置５１ａでは、基板１２が各種の光学シート及び液晶表示パネル５０の側に凸状に湾曲する形状を有している。そして、各光源１１は、基板１２の一方の面１２ｆに第１実施形態と同様の配置構成で配置されており、各光源１１から出射される光Ｌの主出射方向Ｌ３と、基準光源１１ｂの光Ｌの主出射方向Ｌ１（又は当該主出射方向Ｌ１と平行な平行線Ｌ２）とのなす角度は、基準光源１１ｂの位置を通る中心線Ｌ４から外辺１２ｂ及び１２ｄのそれぞれに向かうほど大きく設定されている。即ち、各光源１１の光Ｌの領域１１Ｌの中心軸Ｌ３と平行線Ｌ２とのなす角度は、基板１２の一方の面１２ｆの中心Ｏを通る中心線Ｌ４から外辺１２ｂ及び１２ｄのそれぞれに向かうほど大きく設定されている。また、基準光源１１ｂの光Ｌの主出射方向である法線Ｌ１に対する各光源１１の傾き角度は、基板１２の外辺１２ｂ及び１２ｄのそれぞれに向かうほど順次又は段階的に大きくなっている。なお、基板１２としては、例えば可撓性を有するフレキシブル基板が好適である。この場合、可撓性を有する基板１２が上記した湾曲形状を維持できるように、基板１２と支持部材１３の平坦部１３ａとの間には、各種の光学シート及び液晶表示パネル５０の側に凸状に湾曲する形状を有する部材（例えば、光又は熱硬化性を有する樹脂部材）１８が配置されていることが好ましい。   In the illumination device 51 according to the first embodiment, the substrate 12 has a flat shape. On the other hand, in the illuminating device 51a according to the second embodiment, the substrate 12 has a shape curved in a convex shape toward the various optical sheets and the liquid crystal display panel 50 side. Each light source 11 is arranged on one surface 12f of the substrate 12 in the same arrangement as in the first embodiment, and the main emission direction L3 of the light L emitted from each light source 11 and the reference light source 11b. The angle formed by the main emission direction L1 of the light L (or a parallel line L2 parallel to the main emission direction L1) is set to increase as it goes from the center line L4 passing through the position of the reference light source 11b toward each of the outer sides 12b and 12d. Has been. That is, the angle formed by the central axis L3 of the region 11L of the light L of each light source 11 and the parallel line L2 is directed from the center line L4 passing through the center O of one surface 12f of the substrate 12 to each of the outer sides 12b and 12d. It is set so large. In addition, the inclination angle of each light source 11 with respect to the normal L1 that is the main emission direction of the light L of the reference light source 11b increases sequentially or stepwise toward the outer sides 12b and 12d of the substrate 12. In addition, as the board | substrate 12, the flexible board | substrate which has flexibility is suitable, for example. In this case, various optical sheets and the liquid crystal display panel 50 protrude between the substrate 12 and the flat portion 13a of the support member 13 so that the flexible substrate 12 can maintain the curved shape described above. It is preferable that a member (for example, a resin member having light or thermosetting property) 18 having a curved shape is disposed.

第２実施形態では、照明装置５１ａの製造過程において、基板１２の一方の面１２ｆの曲率を適宜調整することにより、各光源１１から出射される光Ｌの主出射方向Ｌ３と、基準光源１１ｂの光Ｌの主出射方向Ｌ１（又は当該主出射方向Ｌ１と平行な平行線Ｌ２）とのなす角度を、基準光源１１ｂを通る中心線Ｌ４から外辺１２ｂ及び１２ｄのそれぞれに向かうほど大きく設定することが容易となる。言い換えれば、各光源１１の光Ｌの領域１１Ｌの中心軸Ｌ３と平行線Ｌ２とのなす角度を、基板１２の一方の面１２ｆの中心Ｏを通る中心線Ｌ４から外辺１２ｂ及び１２ｄのそれぞれに向かうほど大きく設定することが容易となる。その結果、上記した第１実施形態と同様の作用効果を得ることができる。   In the second embodiment, by appropriately adjusting the curvature of the one surface 12f of the substrate 12 in the manufacturing process of the lighting device 51a, the main emission direction L3 of the light L emitted from each light source 11 and the reference light source 11b. The angle formed by the main emission direction L1 of the light L (or a parallel line L2 parallel to the main emission direction L1) is set to increase as it goes from the center line L4 passing through the reference light source 11b toward the outer sides 12b and 12d. Becomes easy. In other words, the angle formed between the central axis L3 of the region 11L of the light L of each light source 11 and the parallel line L2 is set to each of the outer sides 12b and 12d from the center line L4 passing through the center O of the one surface 12f of the substrate 12. It becomes easier to set larger as it goes. As a result, the same operational effects as those of the first embodiment described above can be obtained.

なお、第２実施形態に係る照明装置５１ａでは、上記した第１実施形態と同様の目的を達成するため、湾曲する基板１２の一方の面１２ｆにおいて、各光源１１と平面的に重ならない位置に、光を反射する反射部材（図３の矩形状の破線領域）７０を配置するようにしてもよい。   In the illumination device 51a according to the second embodiment, in order to achieve the same object as the first embodiment described above, the one surface 12f of the curved substrate 12 is positioned so as not to overlap the light sources 11 in a plane. A reflecting member (rectangular broken line region in FIG. 3) 70 that reflects light may be disposed.

[第３実施形態]
次に、図４を参照して、本発明の第３実施形態に係る液晶装置１００ｂの構成について説明する。 [Third embodiment]
Next, the configuration of the liquid crystal device 100b according to the third embodiment of the present invention will be described with reference to FIG.

図４は、図１に対応する、第３実施形態に係る液晶装置１００ｂの構成を示す断面図である。   FIG. 4 is a cross-sectional view showing a configuration of a liquid crystal device 100b according to the third embodiment corresponding to FIG.

第３実施形態と第１実施形態とを比較した場合、その両者は、照明装置の構成のみが異なり、それ以外は同様である。よって、以下では、第１実施形態と同一の要素については同一の符号を付し、その説明は適宜省略する。   When the third embodiment is compared with the first embodiment, both are different only in the configuration of the illumination device, and are otherwise the same. Therefore, below, the same code | symbol is attached | subjected about the element same as 1st Embodiment, and the description is abbreviate | omitted suitably.

第３実施形態に係る照明装置５１ｂでは、各光源１１の光Ｌの領域１１Ｌの中心軸Ｌ３と平行線Ｌ２とのなす角度が、基板１２の一方の面１２ｆの中心Ｏを通り、基準光源１１ｂの位置を通る中心線Ｌ４から外辺１２ｂ及び１２ｄのそれぞれに向かうほど大きく設定されるように、各光源１１を保持するための保持部材１９が設けられている点が、第１実施形態に係る照明装置５１と構成上異なり、それ以外の構成は第１実施形態に係る照明装置５１と同様である。   In the illuminating device 51b according to the third embodiment, the angle formed by the central axis L3 of the region 11L of the light L of each light source 11 and the parallel line L2 passes through the center O of one surface 12f of the substrate 12, and the reference light source 11b. According to the first embodiment, the holding member 19 for holding each light source 11 is provided so as to increase from the center line L4 passing through the position to the outer sides 12b and 12d. The configuration is different from that of the illumination device 51, and other configurations are the same as those of the illumination device 51 according to the first embodiment.

具体的に、照明装置５１ｂにおいて、基板１２の一方の面１２ｆには、各光源１１を保持可能な保持面１９ａを備える保持部材１９が分散して配置されている。本例では、保持部材１９は、図示を省略するが、基板１２の中心線Ｌ４、Ｌ５のそれぞれに対して線対称をなすように、基板１２の一方の面１２ｆに行列状に配置されている。そして、各光源１１は、各保持部材１９の保持面１９ａに当接して配置されている。また、各光源１１から出射される光Ｌの主出射方向Ｌ３と、各保持部材１９の保持面１９ａに対する各法線（図示略）とは略平行となるように、基板１２の一方の面１２ｆに対する、各保持部材１９の保持面１９ａの傾斜角度が調整されている。言い換えれば、各光源１１から出射される光Ｌの領域１１Ｌの中心を通る中心軸Ｌ３と、各光源１１を保持する各保持部材１９の保持面１９ａに対する各法線（図示略）とが略平行となるように、基板１２の一方の面１２ｆに対する、各保持部材１９の保持面１９ａの傾斜角度が調整されている。   Specifically, in the illumination device 51b, the holding members 19 including the holding surfaces 19a that can hold the light sources 11 are arranged in a distributed manner on one surface 12f of the substrate 12. In this example, although not shown, the holding members 19 are arranged in a matrix on one surface 12f of the substrate 12 so as to be symmetrical with respect to the center lines L4 and L5 of the substrate 12, respectively. . Each light source 11 is disposed in contact with the holding surface 19 a of each holding member 19. Further, one surface 12f of the substrate 12 is set so that the main emission direction L3 of the light L emitted from each light source 11 and each normal line (not shown) with respect to the holding surface 19a of each holding member 19 are substantially parallel. The inclination angle of the holding surface 19a of each holding member 19 is adjusted. In other words, the central axis L3 passing through the center of the region 11L of the light L emitted from each light source 11 and each normal line (not shown) with respect to the holding surface 19a of each holding member 19 holding each light source 11 are substantially parallel. The inclination angle of the holding surface 19a of each holding member 19 with respect to the one surface 12f of the substrate 12 is adjusted so that.

即ち、基板１２の一方の面１２ｆに対する、各保持部材１９の保持面１９ａの傾斜角度は、各光源１１から出射される光Ｌの主出射方向Ｌ３と、基準光源１１ｂの光Ｌの主出射方向Ｌ１（又は当該主出射方向Ｌ１と平行な平行線Ｌ２）とのなす角度が、基板１２の一方の面１２ｆにおける基準光源１１ｂが配置されるべき位置から外辺１２ｂ及び１２ｄのそれぞれに向かうほど大きく設定されるような角度に設定されている。言い換えれば、各光源１１の光Ｌの領域１１Ｌの中心軸Ｌ３と平行線Ｌ２とのなす角度が、基板１２の一方の面１２ｆの中心Ｏを通る中心線Ｌ４から外辺１２ｂ及び１２ｄのそれぞれに向かうほど大きく設定されるような角度に設定されている。また、基準光源１１ｂの光Ｌの主出射方向である法線Ｌ１に対する各光源１１の傾き角度は、基板１２の外辺１２ｂ及び１２ｄのそれぞれに向かうほど順次又は段階的に大きくなっている。   That is, the inclination angle of the holding surface 19a of each holding member 19 with respect to the one surface 12f of the substrate 12 is such that the main emission direction L3 of the light L emitted from each light source 11 and the main emission direction of the light L of the reference light source 11b. An angle formed by L1 (or a parallel line L2 parallel to the main emission direction L1) increases toward the outer sides 12b and 12d from the position where the reference light source 11b on the one surface 12f of the substrate 12 is to be disposed. The angle is set as set. In other words, the angle formed by the central axis L3 of the region 11L of the light L of each light source 11 and the parallel line L2 extends from the center line L4 passing through the center O of one surface 12f of the substrate 12 to each of the outer sides 12b and 12d. The angle is set so as to increase as it goes. In addition, the inclination angle of each light source 11 with respect to the normal L1 that is the main emission direction of the light L of the reference light source 11b increases sequentially or stepwise toward the outer sides 12b and 12d of the substrate 12.

この構成によれば、各光源１１から出射される光Ｌの主出射方向Ｌ３と、基準光源１１ｂの光Ｌの主出射方向Ｌ１（又は当該主出射方向Ｌ１と平行な平行線Ｌ２）とのなす角度を、基準光源１１ｂが配置されるべき位置から外辺１２ｂ及び１２ｄのそれぞれに向かうほど大きく設定するためには、基板１２の一方の面１２ｆに対して所定の傾斜角度を有する各保持部材１９の保持面１９ａに対して、各光源１１を配置するだけでよい。或いは、各光源１１から出射される光Ｌの領域１１Ｌの中心軸Ｌ３と、基板１２の一方の面１２ｆの平行線Ｌ２とのなす角度を、基板１２の一方の面１２ｆの中心線Ｌ４から外辺１２ｂ及び１２ｄのそれぞれに向かうほど大きく設定するためには、基板１２の一方の面１２ｆに対して所定の傾斜角度を有する各保持部材１９の保持面１９ａに対して、各光源１１を配置するだけでよい。よって、基板１２の一方の面１２ｆに対する各光源１１の配置が容易となる。これにより、上記した第１実施形態と同様の作用効果を得ることができる。   According to this configuration, the main emission direction L3 of the light L emitted from each light source 11 and the main emission direction L1 of the light L of the reference light source 11b (or a parallel line L2 parallel to the main emission direction L1) are formed. In order to set the angle to be larger toward the outer sides 12b and 12d from the position where the reference light source 11b is to be disposed, each holding member 19 having a predetermined inclination angle with respect to one surface 12f of the substrate 12 is set. It is only necessary to arrange each light source 11 with respect to the holding surface 19a. Alternatively, the angle formed by the central axis L3 of the region 11L of the light L emitted from each light source 11 and the parallel line L2 of the one surface 12f of the substrate 12 is outside the center line L4 of the one surface 12f of the substrate 12. In order to increase the distance toward the sides 12b and 12d, each light source 11 is arranged on the holding surface 19a of each holding member 19 having a predetermined inclination angle with respect to one surface 12f of the substrate 12. Just do it. Therefore, the arrangement of the light sources 11 with respect to the one surface 12f of the substrate 12 is facilitated. Thereby, the same effect as 1st Embodiment mentioned above can be acquired.

なお、第３実施形態に係る照明装置５１ｂでは、上記した第１実施形態と同様の目的を達成するため、基板１２の一方の面１２ｆにおいて、各光源１１と平面的に重ならない位置に、光を反射する反射部材（図４の矩形状の破線領域）７０を配置するようにしてもよい。   In the illumination device 51b according to the third embodiment, in order to achieve the same object as that of the first embodiment described above, the light is placed on the one surface 12f of the substrate 12 at a position that does not overlap the light sources 11 in a planar manner. A reflecting member (rectangular broken line region in FIG. 4) 70 may be disposed.

[変形例]
上記の第１乃至第３実施形態に係る照明装置５１、５１ａ、５１ｂ（以下、代表して「照明装置６０」と称する）では、各光源１１から出射される光Ｌの主出射方向Ｌ３と、基準光源１１ｂの光Ｌの主出射方向Ｌ１（又は当該主出射方向Ｌ１と平行な平行線Ｌ２）とのなす角度、即ち、各光源１１の光Ｌの領域１１Ｌの中心軸Ｌ３と平行線Ｌ２とのなす角度が、基板１２の一方の面１２ｆの中心Ｏを通る中心線Ｌ４から外辺１２ｂ及び１２ｄのそれぞれに向かうほど大きく設定されていた。しかし、本発明では、基板１２の一方の面１２ｆに対する各光源１１の配置構造は、これらの構成に限定されるものではない。以下、各種変形例に係る、基板１２の一方の面１２ｆに対する各光源１１の配置構造について説明する。 [Modification]
In the illumination devices 51, 51a, 51b according to the first to third embodiments (hereinafter referred to as “illumination device 60” as a representative), the main emission direction L3 of the light L emitted from each light source 11, The angle formed by the main emission direction L1 of the light L of the reference light source 11b (or the parallel line L2 parallel to the main emission direction L1), that is, the central axis L3 and the parallel line L2 of the region 11L of the light L of each light source 11 Is set so as to increase from the center line L4 passing through the center O of the one surface 12f of the substrate 12 toward the outer sides 12b and 12d. However, in the present invention, the arrangement structure of the light sources 11 with respect to the one surface 12f of the substrate 12 is not limited to these configurations. Hereinafter, the arrangement structure of each light source 11 with respect to one surface 12f of the substrate 12 according to various modifications will be described.

（変形例１）
まず、図５（ａ）を参照して、本発明の変形例１に係る照明装置６０ｓの構成について簡単に説明する。なお、以下では、第１乃至第３実施形態と共通する点については説明を省略する。 (Modification 1)
First, with reference to Fig.5 (a), the structure of the illuminating device 60s which concerns on the modification 1 of this invention is demonstrated easily. In addition, below, description is abbreviate | omitted about the point which is common in 1st thru | or 3rd embodiment.

図５（ａ）は、図２（ａ）に対応する、変形例１に係る照明装置６０ｓの平面構成を示す。但し、図５（ａ）では、便宜上、変形例１に係る照明装置６０ｓの要素である各種の光学シート及び支持部材１３の図示を省略していると共に、基板１２の一方の面１２ｆに配置される光源１１の数を照明装置６０と比べて少なくしている。   Fig.5 (a) shows the planar structure of 60 s of illuminating devices which concern on the modification 1 corresponding to Fig.2 (a). However, in FIG. 5A, for the sake of convenience, illustration of various optical sheets and supporting members 13 that are elements of the illumination device 60 s according to Modification 1 is omitted, and the optical sheet is disposed on one surface 12 f of the substrate 12. The number of the light sources 11 to be reduced is smaller than that of the lighting device 60.

変形例１に係る照明装置６０ｓでは、各光源１１は、図中の矢印Ｙ３及びＹ４の方向に示すように、各光源１１から出射される光Ｌの主出射方向Ｌ３と、基準光源１１ｂの光Ｌの主出射方向Ｌ１（又は当該主出射方向Ｌ１と平行な平行線Ｌ２）とのなす角度、即ち、各光源１１の光Ｌの領域１１Ｌの中心軸Ｌ３と平行線Ｌ２とのなす角度が、基板１２の一方の面１２ｆの中心Ｏを通る中心線Ｌ４、Ｌ５の各々に対して線対称をなす角度となるように基板１２の一方の面１２ｆに行列状に配置されている。具体的に、各光源１１から出射される光Ｌの主出射方向Ｌ３と、基準光源１１ｂの光Ｌの主出射方向Ｌ１（又は当該主出射方向Ｌ１と平行な平行線Ｌ２）とのなす角度、即ち、各光源１１の光Ｌの領域１１Ｌの中心軸Ｌ３と平行線Ｌ２とのなす角度は、図５（ａ）の矢印Ｙ３及びＹ４の方向に示すように、基板１２の一方の面１２ｆの中心線Ｌ５から外辺１２ａ及び１２ｃのそれぞれに向かうほど大きく設定されている。   In the illuminating device 60s according to the modified example 1, each light source 11 has a main emission direction L3 of the light L emitted from each light source 11 and the light of the reference light source 11b as shown by the directions of arrows Y3 and Y4 in the drawing. An angle formed by the main emission direction L1 of L (or a parallel line L2 parallel to the main emission direction L1), that is, an angle formed by the central axis L3 of the region 11L of the light L of each light source 11 and the parallel line L2 is The substrates 12 are arranged in a matrix on one surface 12f of the substrate 12 so that the angles are symmetrical with respect to the center lines L4 and L5 passing through the center O of the one surface 12f of the substrate 12. Specifically, an angle formed between the main emission direction L3 of the light L emitted from each light source 11 and the main emission direction L1 of the light L of the reference light source 11b (or a parallel line L2 parallel to the main emission direction L1), That is, the angle formed between the central axis L3 of the light L region 11L of each light source 11 and the parallel line L2 is as shown by the directions of arrows Y3 and Y4 in FIG. The distance from the center line L5 increases toward the outer sides 12a and 12c.

これにより、変形例１では、基準光源１１ｂを通る中心線Ｌ５から外辺１２ａ及び１２ｃのそれぞれに向かうに従い、液晶表示パネル５０側に向けて各光源１１からより多くの光Ｌが照射されることになる。その結果、液晶表示パネル５０の外周部（表示領域Ｖ１と非表示領域Ｖ２との境界付近の領域であって、且つ外辺１２ａ及び１２ｃに対応する領域）の輝度を高くすることができると共に、液晶表示パネル５０の表示領域Ｖ１の中央部とその表示領域Ｖ１の外周部との間における輝度ムラを抑制でき、液晶表示パネル５０の表示領域Ｖ１における輝度の均一化を図ることができる。   Thereby, in the modification 1, as it goes to each of the outer sides 12a and 12c from the center line L5 passing through the reference light source 11b, more light L is emitted from each light source 11 toward the liquid crystal display panel 50 side. become. As a result, the brightness of the outer peripheral portion of the liquid crystal display panel 50 (the region near the boundary between the display region V1 and the non-display region V2 and corresponding to the outer sides 12a and 12c) can be increased. The luminance unevenness between the central portion of the display region V1 of the liquid crystal display panel 50 and the outer peripheral portion of the display region V1 can be suppressed, and the luminance in the display region V1 of the liquid crystal display panel 50 can be made uniform.

（変形例２）
次に、図５（ｂ）を参照して、本発明の変形例２に係る照明装置６０ｔの構成について簡単に説明する。なお、以下では、第１乃至第３実施形態と共通する点については説明を省略する。 (Modification 2)
Next, with reference to FIG.5 (b), the structure of the illuminating device 60t which concerns on the modification 2 of this invention is demonstrated easily. In addition, below, description is abbreviate | omitted about the point which is common in 1st thru | or 3rd embodiment.

図５（ｂ）は、図５（ａ）に対応する、変形例２に係る照明装置６０ｔの平面構成を示す。但し、図５（ｂ）では、便宜上、変形例２に係る照明装置６０ｔの要素である各種の光学シート及び支持部材１３の図示を省略している。   FIG. 5B shows a planar configuration of the illumination device 60t according to the modification 2 corresponding to FIG. However, in FIG.5 (b), illustration of the various optical sheets and the supporting member 13 which are the elements of the illuminating device 60t which concerns on the modification 2 is abbreviate | omitted for convenience.

変形例２に係る照明装置６０ｔでは、各光源１１は、図中の矢印Ｙ１〜Ｙ８の方向に示すように、各光源１１から出射される光Ｌの主出射方向Ｌ３と、基準光源１１ｂの光Ｌの主出射方向Ｌ１（又は当該主出射方向Ｌ１と平行な平行線Ｌ２）とのなす角度、即ち、各光源１１の光Ｌの領域１１Ｌの中心軸Ｌ３と平行線Ｌ２とのなす角度が、基準光源１１ｂの光Ｌの主出射方向（法線）Ｌ１に対して点対称をなす角度となるように基板１２の一方の面１２ｆに行列状に配置される。具体的に、各光源１１から出射される光Ｌの主出射方向Ｌ３と、基準光源１１ｂの光Ｌの主出射方向Ｌ１（又は当該主出射方向Ｌ１と平行な平行線Ｌ２）とのなす角度、即ち、各光源１１の光Ｌの領域１１Ｌの中心軸Ｌ３と平行線Ｌ２とのなす角度は、図５（ｂ）の矢印Ｙ１〜Ｙ８の方向に示すように、基板１２の一方の面１２ｆの中心Ｏから外辺１２ａ、１２ｂ、１２ｃ及び１２ｄ並びに基板１２の各隅のそれぞれに向かうほど大きく設定されている。   In the illuminating device 60t according to the modified example 2, each light source 11 has the main emission direction L3 of the light L emitted from each light source 11 and the light of the reference light source 11b as shown in the directions of arrows Y1 to Y8 in the drawing. An angle formed by the main emission direction L1 of L (or a parallel line L2 parallel to the main emission direction L1), that is, an angle formed by the central axis L3 of the region 11L of the light L of each light source 11 and the parallel line L2 is The reference light source 11b is arranged in a matrix on one surface 12f of the substrate 12 so as to have an angle that is point-symmetric with respect to the main emission direction (normal line) L1 of the light L of the reference light source 11b. Specifically, an angle formed between the main emission direction L3 of the light L emitted from each light source 11 and the main emission direction L1 of the light L of the reference light source 11b (or a parallel line L2 parallel to the main emission direction L1), That is, the angle formed between the central axis L3 of the light L region 11L of each light source 11 and the parallel line L2 is as shown by the directions of arrows Y1 to Y8 in FIG. The distance from the center O to the outer sides 12a, 12b, 12c and 12d and each corner of the substrate 12 is set larger.

これにより、変形例２では、基板１２の一方の面１２ｆにおける基準光源１１ｂが位置する中心Ｏから外辺１２ａ、１２ｂ、１２ｃ及び１２ｄ並びに基板１２の各隅のそれぞれに向かうに従い、液晶表示パネル５０側に向けて各光源１１からより多くの光Ｌが照射されることになる。その結果、液晶表示パネル５０の外周部（表示領域Ｖ１と非表示領域Ｖ２との境界付近の領域）の輝度をより高くすることができると共に、液晶表示パネル５０の表示領域Ｖ１の中央部とその表示領域Ｖ１の外周部との間における輝度ムラをより抑制でき、液晶表示パネル５０の表示領域Ｖ１における輝度の均一化をより図ることができる。   Accordingly, in the second modification, the liquid crystal display panel 50 is moved from the center O where the reference light source 11b is located on one surface 12f of the substrate 12 toward each of the outer sides 12a, 12b, 12c and 12d and each corner of the substrate 12. More light L is emitted from each light source 11 toward the side. As a result, the luminance of the outer peripheral portion of the liquid crystal display panel 50 (the region near the boundary between the display region V1 and the non-display region V2) can be increased, and the central portion of the display region V1 of the liquid crystal display panel 50 and its Brightness unevenness between the outer periphery of the display area V1 can be further suppressed, and the brightness in the display area V1 of the liquid crystal display panel 50 can be made more uniform.

（変形例３）
次に、図６（ａ）を参照して、本発明の変形例３に係る照明装置６０ｕの構成について簡単に説明する。なお、以下では、第１乃至第３実施形態と共通する点については説明を省略する。 (Modification 3)
Next, with reference to Fig.6 (a), the structure of the illuminating device 60u which concerns on the modification 3 of this invention is demonstrated easily. In addition, below, description is abbreviate | omitted about the point which is common in 1st thru | or 3rd embodiment.

図６（ａ）は、図５（ａ）に対応する、変形例３に係る照明装置６０ｕの平面構成を示す。但し、図６（ａ）では、便宜上、変形例３に係る照明装置６０ｕの要素である各種の光学シート及び支持部材１３の図示を省略している。なお、図６（ａ）では、仮想の同心円を破線にて示す。   Fig.6 (a) shows the plane structure of the illuminating device 60u which concerns on the modification 3 corresponding to Fig.5 (a). However, in FIG. 6A, illustration of various optical sheets and the support member 13 which are elements of the illumination device 60u according to the modification 3 is omitted for convenience. In FIG. 6A, a virtual concentric circle is indicated by a broken line.

変形例３に係る照明装置６０ｕでは、各光源１１は、基板１２の一方の面１２ｆに各凹部１２ｆａを介して同心円状に配置されている。また、各光源１１は、図中の矢印Ｙ１及びＹ２の方向に示すように、各光源１１から出射される光Ｌの主出射方向Ｌ３と、基準光源１１ｂの光Ｌの主出射方向Ｌ１（又は当該主出射方向Ｌ１と平行な平行線Ｌ２）とのなす角度、即ち、各光源１１の光Ｌの領域１１Ｌの中心軸Ｌ３と平行線Ｌ２とのなす角度が、基板１２の一方の面１２ｆにおける基準光源１１ｂが位置する中心Ｏを通る中心線Ｌ４、Ｌ５の各々に対して線対称をなす角度となるように基板１２の一方の面１２ｆに配置されている。具体的に、各光源１１は、各光源１１から出射される光Ｌの主出射方向Ｌ３と、基準光源１１ｂの光Ｌの主出射方向Ｌ１（又は当該主出射方向Ｌ１と平行な平行線Ｌ２）とのなす角度、即ち、各光源１１の光Ｌの領域１１Ｌの中心軸Ｌ３と平行線Ｌ２とのなす角度が、基板１２の一方の面１２ｆにおける基準光源１１ｂが位置する中心Ｏを通る中心線Ｌ４から外辺１２ｂ及び１２ｄのそれぞれに向かうほど大きく設定されている。これにより、上記した第１実施形態と略同様の作用効果を得ることができる。   In the illuminating device 60u which concerns on the modification 3, each light source 11 is arrange | positioned concentrically on one surface 12f of the board | substrate 12 via each recessed part 12fa. Each light source 11 has a main emission direction L3 of the light L emitted from each light source 11 and a main emission direction L1 of the light L of the reference light source 11b (or as indicated by the directions of arrows Y1 and Y2 in the figure). The angle formed between the main emission direction L1 and the parallel line L2), that is, the angle formed between the central axis L3 of the region 11L of the light L of each light source 11 and the parallel line L2, is on one surface 12f of the substrate 12. The reference light source 11b is arranged on one surface 12f of the substrate 12 so as to have an angle that is line symmetric with respect to each of the center lines L4 and L5 passing through the center O where the reference light source 11b is located. Specifically, each light source 11 has a main emission direction L3 of the light L emitted from each light source 11, and a main emission direction L1 of the light L of the reference light source 11b (or a parallel line L2 parallel to the main emission direction L1). , That is, the angle formed between the central axis L3 of the region 11L of the light L of each light source 11 and the parallel line L2, the center line passing through the center O where the reference light source 11b is located on one surface 12f of the substrate 12. It is set so as to increase from L4 toward each of the outer sides 12b and 12d. Thereby, substantially the same operation effect as the above-mentioned 1st Embodiment can be acquired.

（変形例４）
次に、図６（ｂ）を参照して、本発明の変形例４に係る照明装置６０ｖの構成について簡単に説明する。なお、以下では、第１乃至第３実施形態と共通する点については説明を省略する。 (Modification 4)
Next, with reference to FIG.6 (b), the structure of the illuminating device 60v which concerns on the modification 4 of this invention is demonstrated easily. In addition, below, description is abbreviate | omitted about the point which is common in 1st thru | or 3rd embodiment.

図６（ｂ）は、図５（ａ）に対応する、変形例４に係る照明装置６０ｖの平面構成を示す。但し、図６（ｂ）では、便宜上、変形例４に係る照明装置６０ｖの要素である各種の光学シート及び支持部材１３の図示を省略している。なお、図６（ｂ）では、仮想の同心円を破線にて示す。   FIG. 6B shows a planar configuration of the illumination device 60v according to the modification 4 corresponding to FIG. However, in FIG.6 (b), illustration of the various optical sheets and the supporting member 13 which are the elements of the illuminating device 60v which concerns on the modification 4 is abbreviate | omitted for convenience. In FIG. 6B, a virtual concentric circle is indicated by a broken line.

変形例４に係る照明装置６０ｖでは、各光源１１は、変形例３と同様に、基板１２の一方の面１２ｆに各凹部１２ｆａを介して同心円状に配置されている。また、各光源１１は、図中の矢印Ｙ３及びＹ４の方向に示すように、各光源１１から出射される光Ｌの主出射方向Ｌ３と、基準光源１１ｂの光Ｌの主出射方向Ｌ１（又は当該主出射方向Ｌ１と平行な平行線Ｌ２）とのなす角度、即ち、各光源１１の光Ｌの領域１１Ｌの中心軸Ｌ３と平行線Ｌ２とのなす角度が、基板１２の一方の面１２ｆにおける基準光源１１ｂが位置する中心Ｏを通る中心線Ｌ４、Ｌ５の各々に対して線対称をなす角度となるように基板１２の一方の面１２ｆに配置されている。具体的に、各光源１１は、各光源１１から出射される光Ｌの主出射方向Ｌ３と、基準光源１１ｂの光Ｌの主出射方向Ｌ１（又は当該主出射方向Ｌ１と平行な平行線Ｌ２）とのなす角度、即ち、各光源１１の光Ｌの領域１１Ｌの中心軸Ｌ３と平行線Ｌ２とのなす角度が、基板１２の一方の面１２ｆにおける基準光源１１ｂが位置する中心Ｏを通る中心線Ｌ５から外辺１２ａ及び１２ｃのそれぞれに向かうほど大きく設定されている。これにより、上記した変形例１と略同様の作用効果を得ることができる。   In the illuminating device 60v according to the modified example 4, as in the modified example 3, the light sources 11 are arranged concentrically on the one surface 12f of the substrate 12 via the recessed portions 12fa. Each light source 11 has a main emission direction L3 of the light L emitted from each light source 11 and a main emission direction L1 of the light L of the reference light source 11b (or as indicated by the directions of arrows Y3 and Y4 in the figure). The angle formed between the main emission direction L1 and the parallel line L2), that is, the angle formed between the central axis L3 of the region 11L of the light L of each light source 11 and the parallel line L2, is on one surface 12f of the substrate 12. The reference light source 11b is arranged on one surface 12f of the substrate 12 so as to have an angle that is line symmetric with respect to each of the center lines L4 and L5 passing through the center O where the reference light source 11b is located. Specifically, each light source 11 has a main emission direction L3 of the light L emitted from each light source 11, and a main emission direction L1 of the light L of the reference light source 11b (or a parallel line L2 parallel to the main emission direction L1). , That is, the angle formed between the central axis L3 of the region 11L of the light L of each light source 11 and the parallel line L2, the center line passing through the center O where the reference light source 11b is located on one surface 12f of the substrate 12. It is set so as to increase from L5 to each of the outer sides 12a and 12c. Thereby, substantially the same operation effect as the above-mentioned modification 1 can be obtained.

（変形例５）
次に、図６（ｃ）を参照して、本発明の変形例５に係る照明装置６０ｗの構成について簡単に説明する。なお、以下では、第１乃至第３実施形態と共通する点については説明を省略する。 (Modification 5)
Next, with reference to FIG.6 (c), the structure of the illuminating device 60w which concerns on the modification 5 of this invention is demonstrated easily. In addition, below, description is abbreviate | omitted about the point which is common in 1st thru | or 3rd embodiment.

図６（ｃ）は、図５（ａ）に対応する、変形例５に係る照明装置６０ｗの平面構成を示す。但し、図６（ｃ）では、便宜上、変形例５に係る照明装置６０ｗの要素である各種の光学シート及び支持部材１３の図示を省略している。なお、図６（ｃ）では、仮想の同心円を破線にて示す。   FIG. 6C shows a planar configuration of the illumination device 60w according to the modified example 5 corresponding to FIG. However, in FIG.6 (c), illustration of the various optical sheets and the supporting member 13 which are the elements of the illuminating device 60w which concerns on the modification 5 is abbreviate | omitted for convenience. In FIG. 6C, a virtual concentric circle is indicated by a broken line.

変形例５に係る照明装置６０ｗでは、各光源１１は、変形例３と同様に、基板１２の一方の面１２ｆに各凹部１２ｆａを介して同心円状に配置されている。また、各光源１１は、図中の矢印Ｙ１〜Ｙ８の方向に示すように、各光源１１から出射される光Ｌの主出射方向Ｌ３と、基準光源１１ｂの光Ｌの主出射方向Ｌ１（又は当該主出射方向Ｌ１と平行な平行線Ｌ２）とのなす角度、即ち、各光源１１の光Ｌの領域１１Ｌの中心軸Ｌ３と平行線Ｌ２とのなす角度が、基準光源１１ｂの光Ｌの主出射方向（法線）Ｌ１に対して点対称をなす角度となるように基板１２の一方の面１２ｆに配置される。具体的に、各光源１１は、各光源１１から出射される光Ｌの主出射方向Ｌ３と、基準光源１１ｂの光Ｌの主出射方向Ｌ１（又は当該主出射方向Ｌ１と平行な平行線Ｌ２）とのなす角度、即ち、各光源１１の光Ｌの領域１１Ｌの中心軸Ｌ３と平行線Ｌ２とのなす角度が、基板１２の一方の面１２ｆにおける基準光源１１ｂが位置する中心Ｏから外辺１２ａ、１２ｂ、１２ｃ及び１２ｄ並びに基板１２の各隅のそれぞれに向かうほど大きく設定されている。これにより、上記した変形例２と略同様の作用効果を得ることができる。   In the illuminating device 60w according to the modified example 5, as in the modified example 3, the light sources 11 are arranged concentrically on the one surface 12f of the substrate 12 via the recessed portions 12fa. Each light source 11 has a main emission direction L3 of the light L emitted from each light source 11 and a main emission direction L1 of the light L of the reference light source 11b (or as indicated by the directions of arrows Y1 to Y8 in the figure). The angle formed between the main emission direction L1 and the parallel line L2), that is, the angle formed between the central axis L3 of the region 11L of the light L of each light source 11 and the parallel line L2, is the main light L of the reference light source 11b. It arrange | positions at one surface 12f of the board | substrate 12 so that it may become an angle which makes point symmetry with respect to the output direction (normal line) L1. Specifically, each light source 11 has a main emission direction L3 of the light L emitted from each light source 11, and a main emission direction L1 of the light L of the reference light source 11b (or a parallel line L2 parallel to the main emission direction L1). , That is, the angle formed between the central axis L3 of the region 11L of the light L of each light source 11 and the parallel line L2, the outer side 12a from the center O where the reference light source 11b is located on one surface 12f of the substrate 12. , 12b, 12c, and 12d and the corners of the substrate 12 are set to be larger. Thereby, substantially the same operation effect as the above-mentioned modification 2 can be obtained.

（変形例６）
次に、図７を参照して、本発明の変形例６に係る照明装置６０ｘの構成について簡単に説明する。なお、以下では、第１乃至第３実施形態と共通する点については説明を省略する。 (Modification 6)
Next, with reference to FIG. 7, the structure of the illuminating device 60x which concerns on the modification 6 of this invention is demonstrated easily. In addition, below, description is abbreviate | omitted about the point which is common in 1st thru | or 3rd embodiment.

図７は、図５（ａ）に対応する、変形例６に係る照明装置６０ｘの平面構成を示す。但し、図７では、便宜上、変形例６に係る照明装置６０ｘの要素である各種の光学シート及び支持部材１３の図示を省略している。なお、図７では、仮想の同心円を破線にて示す。   FIG. 7 shows a planar configuration of an illuminating device 60x according to Modification 6 corresponding to FIG. However, in FIG. 7, illustration of various optical sheets and the support member 13 that are elements of the illumination device 60 x according to the modification 6 is omitted for convenience. In FIG. 7, virtual concentric circles are indicated by broken lines.

変形例６に係る照明装置６０ｘでは、各光源１１は、変形例３と同様に、基板１２の一方の面１２ｆに各凹部１２ｆａを介して同心円状に配置されている。また、基板１２の一方の面１２ｆにおいて、円状に配列された一群の光源１１に対して外側に且つ隣り合う位置に円状に配列された他の一群の光源１１の各々は、当該一群の光源１１の各々の間に対応する位置に配置されている。   In the illuminating device 60x according to the modified example 6, as in the modified example 3, the light sources 11 are arranged concentrically on the one surface 12f of the substrate 12 via the recessed portions 12fa. In addition, on one surface 12f of the substrate 12, each of the other group of light sources 11 arranged in a circle at a position adjacent to the outside and adjacent to the group of light sources 11 arranged in a circle is the group of light sources 11. It arrange | positions in the position corresponding between each of the light sources 11. FIG.

また、各光源１１は、図中の矢印Ｙ１〜Ｙ８の方向に示すように、各光源１１から出射される光Ｌの主出射方向Ｌ３と、基準光源１１ｂの光Ｌの主出射方向Ｌ１（又は当該主出射方向Ｌ１と平行な平行線Ｌ２）とのなす角度、即ち、各光源１１の光Ｌの領域１１Ｌの中心軸Ｌ３と平行線Ｌ２とのなす角度が、基準光源１１ｂの光Ｌの主出射方向（法線）Ｌ１に対して点対称をなす角度となるように基板１２の一方の面１２ｆに配置される。具体的に、各光源１１は、各光源１１から出射される光Ｌの主出射方向Ｌ３と、基準光源１１ｂの光Ｌの主出射方向Ｌ１（又は当該主出射方向Ｌ１と平行な平行線Ｌ２）とのなす角度、即ち、各光源１１の光Ｌの領域１１Ｌの中心軸Ｌ３と平行線Ｌ２とのなす角度が、基板１２の一方の面１２ｆにおける基準光源１１ｂが位置する中心Ｏから外辺１２ａ、１２ｂ、１２ｃ及び１２ｄ並びに基板１２の各隅のそれぞれに向かうほど大きく設定されている。また、基板１２の一方の面１２ｆに対する光源１１の配置密度は、基板１２の一方の面１２ｆの各隅に向かうほど大きくなっている。   Each light source 11 has a main emission direction L3 of the light L emitted from each light source 11 and a main emission direction L1 of the light L of the reference light source 11b (or as indicated by the directions of arrows Y1 to Y8 in the figure). The angle formed between the main emission direction L1 and the parallel line L2), that is, the angle formed between the central axis L3 of the region 11L of the light L of each light source 11 and the parallel line L2, is the main light L of the reference light source 11b. It arrange | positions at one surface 12f of the board | substrate 12 so that it may become an angle which makes point symmetry with respect to the output direction (normal line) L1. Specifically, each light source 11 has a main emission direction L3 of the light L emitted from each light source 11, and a main emission direction L1 of the light L of the reference light source 11b (or a parallel line L2 parallel to the main emission direction L1). , That is, the angle formed between the central axis L3 of the region 11L of the light L of each light source 11 and the parallel line L2, the outer side 12a from the center O where the reference light source 11b is located on one surface 12f of the substrate 12. , 12b, 12c, and 12d and the corners of the substrate 12 are set to be larger. Further, the arrangement density of the light sources 11 with respect to the one surface 12f of the substrate 12 increases toward the respective corners of the one surface 12f of the substrate 12.

かかる構成により、基板１２の一方の面１２ｆにおける基準光源１１ｂが位置する中心Ｏから外辺１２ａ、１２ｂ、１２ｃ及び１２ｄ並びに基板１２の各隅のそれぞれに向かうに従い、液晶表示パネル５０側に向けて各光源１１からより多くの光Ｌが照射されることになり、液晶表示パネル５０の表示領域Ｖ１の各隅の領域の輝度をより高めることができる。これにより、液晶表示パネル５０の外周部（表示領域Ｖ１と非表示領域Ｖ２との境界付近の領域）の輝度をより高くすることができると共に、液晶表示パネル５０の表示領域Ｖ１の中央部とその表示領域Ｖ１の外周部との間における輝度ムラをより抑制でき、液晶表示パネル５０の表示領域Ｖ１における輝度の均一化をより図ることができる。   With this configuration, the liquid crystal display panel 50 is directed toward the outer sides 12a, 12b, 12c and 12d and the corners of the substrate 12 from the center O where the reference light source 11b is located on one surface 12f of the substrate 12. More light L is emitted from each light source 11, and the brightness of each corner area of the display area V1 of the liquid crystal display panel 50 can be further increased. Thereby, the luminance of the outer peripheral portion of the liquid crystal display panel 50 (region near the boundary between the display region V1 and the non-display region V2) can be increased, and the central portion of the display region V1 of the liquid crystal display panel 50 and its Brightness unevenness between the outer periphery of the display area V1 can be further suppressed, and the brightness in the display area V1 of the liquid crystal display panel 50 can be made more uniform.

（変形例７）
次に、図８（ａ）を参照して、本発明の変形例７に係る照明装置６０ｙの構成について簡単に説明する。なお、以下では、第１乃至第３実施形態と共通する点については説明を省略する。 (Modification 7)
Next, with reference to Fig.8 (a), the structure of the illuminating device 60y which concerns on the modification 7 of this invention is demonstrated easily. In addition, below, description is abbreviate | omitted about the point which is common in 1st thru | or 3rd embodiment.

図８（ａ）は、変形例７に係る照明装置６０ｙの平面構成を示す。但し、図８（ａ）では、便宜上、各種の光学シート等の図示を省略している。   FIG. 8A shows a planar configuration of the illumination device 60y according to the modified example 7. FIG. However, in FIG. 8A, illustration of various optical sheets and the like is omitted for convenience.

変形例７に係る照明装置６０ｙは、基準光源１１ｂを有する光源パターン領域が各基板１２の一方の面１２ｆ側に複数配置されて構成される。具体的に、照明装置６０ｙは、複数の光源パターン領域（本例では、光源パターン領域Ｅ１〜Ｅ４）と、各光源パターン領域が配置される支持部材１３と、各光源パターン領域に対応して設けられた各種の光学シート（図示略）と、を備える。ここで、光源パターン領域は、複数の基板１２と、各基板１２の一方の面１２ｆ側に配置された基準光源１１ｂを含む複数の光源１１と、を備えて構成される光源ユニットであることが好ましい。なお、各基板１２の一方の面１２ｆ側に対する、複数の光源１１の配置構成は、上記の第１乃至第３実施形態、或いは変形例１乃至６のうち何れかの構成を適用することができる。好適な例では、各基板１２の一方の面１２ｆ側に対する、複数の光源１１の配置構成は、全てが同一の照明装置（例えば、領域Ｅ１〜Ｅ４の全てが照明装置６０ｗなど）であることが好ましい。この構成によれば、パソコンなどの大画面用の照明装置として好適に用いることができる。   The illuminating device 60y according to the modified example 7 is configured by arranging a plurality of light source pattern regions having the reference light source 11b on the one surface 12f side of each substrate 12. Specifically, the illuminating device 60y is provided corresponding to each light source pattern area, a plurality of light source pattern areas (in this example, light source pattern areas E1 to E4), a support member 13 on which each light source pattern area is arranged, and Various optical sheets (not shown). Here, the light source pattern region may be a light source unit configured to include a plurality of substrates 12 and a plurality of light sources 11 including a reference light source 11b arranged on one surface 12f side of each substrate 12. preferable. The arrangement configuration of the plurality of light sources 11 with respect to the one surface 12f side of each substrate 12 may be any of the configurations of the first to third embodiments or the first to sixth modifications. . In a preferred example, the arrangement configuration of the plurality of light sources 11 with respect to the one surface 12f side of each substrate 12 is all the same lighting device (for example, all of the regions E1 to E4 are lighting devices 60w, etc.). preferable. According to this configuration, it can be suitably used as a large screen lighting device such as a personal computer.

なお、本発明では、上記した光源パターン領域Ｅ１〜Ｅｎ（ｎは自然数）は、短冊状の領域であっても構わない。この場合、本発明では、照明装置６０ｚは、図８（ｂ）に示すように、短冊状の光源パターン領域Ｅ１〜Ｅｎ（ｎは自然数）を、支持部材１３に対して並列して配置するようにしても構わない。   In the present invention, the light source pattern areas E1 to En (n is a natural number) described above may be strip-shaped areas. In this case, in the present invention, as shown in FIG. 8B, the illumination device 60z arranges strip-like light source pattern regions E1 to En (n is a natural number) in parallel with the support member 13. It doesn't matter.

（その他の変形例）
本発明は、上記の第１乃至第３実施形態に係る照明装置や、変形例１乃至７に係る照明装置の構成に限定されるものではなく、その趣旨を逸脱しない範囲において種々の変更を加えることが可能である。 (Other variations)
The present invention is not limited to the configurations of the illumination devices according to the first to third embodiments and the illumination devices according to the first to seventh modifications, and various modifications are made without departing from the spirit of the present invention. It is possible.

例えば、本発明では、複数の光源１２は、液晶表示パネル５０側に向けて光Ｌを出射することが可能であることを前提として、それらの光Ｌの出射方向が同一ならば基板１２の一方の面１２ｆ上にあることは必須ではない。また、本発明では、複数の光源１２は、液晶表示パネル５０側に向けて光Ｌを出射することが可能であることを前提として、基板１２の側面等に直接的に又は保持部材１９等を介して配置されていてもよい。   For example, in the present invention, on the assumption that the plurality of light sources 12 can emit light L toward the liquid crystal display panel 50 side, if the emission directions of the light L are the same, It is not essential to be on the surface 12f. Further, in the present invention, on the assumption that the plurality of light sources 12 can emit the light L toward the liquid crystal display panel 50 side, the holding member 19 or the like is provided directly on the side surface of the substrate 12 or the like. It may be arranged via.

また、本発明では、光源１１の数、形状、発光色の種類等に限定はない。また、本発明では、基板１２の平面形状及び数などに限定はない。さらに、本発明では、電気光学装置の一例としての表示装置は、液晶装置に限定されず、有機エレクトロルミネッセンス表示装置、プラズマディスプレイ装置、及びフィールドエミッション表示装置などであってもよい。   In the present invention, the number of light sources 11, the shape, the type of emission color, etc. are not limited. In the present invention, the planar shape and number of the substrates 12 are not limited. Furthermore, in the present invention, the display device as an example of the electro-optical device is not limited to the liquid crystal device, and may be an organic electroluminescence display device, a plasma display device, a field emission display device, or the like.

[電子機器]
次に、上記した第１乃至第３実施形態に係る照明装置、及び上記した変形例１乃至７等に係る照明装置等の何れかを備える液晶装置（以下、代表して「液晶装置１０００」と称する）を備える電子機器の具体例について図９を参照して説明する。 [Electronics]
Next, a liquid crystal device including any of the illumination devices according to the first to third embodiments described above and the illumination devices according to the above-described modifications 1 to 7 (hereinafter referred to as “liquid crystal device 1000” as a representative). A specific example of an electronic apparatus provided with the above will be described with reference to FIGS.

まず、本発明に係る液晶装置１０００を、可搬型のパーソナルコンピュータ（いわゆるノート型パソコン）の表示部に適用した例について説明する。図９（ａ）は、このパーソナルコンピュータの構成を示す斜視図である。同図に示すように、パーソナルコンピュータ７１０は、キーボード７１１を備えた本体部７１２と、本発明に係る液晶装置１０００を適用した表示部７１３とを備えている。   First, an example in which the liquid crystal device 1000 according to the present invention is applied to a display unit of a portable personal computer (so-called notebook personal computer) will be described. FIG. 9A is a perspective view showing the configuration of this personal computer. As shown in the figure, a personal computer 710 includes a main body 712 having a keyboard 711 and a display 713 to which the liquid crystal device 1000 according to the present invention is applied.

続いて、本発明に係る液晶装置１０００を、携帯電話機の表示部に適用した例について説明する。図９（ｂ）は、この携帯電話機の構成を示す斜視図である。同図に示すように、携帯電話機７２０は、複数の操作ボタン７２１のほか、受話口７２２、送話口７２３とともに、本発明に係る液晶装置１０００を適用した表示部７２４を備える。   Next, an example in which the liquid crystal device 1000 according to the present invention is applied to a display unit of a mobile phone will be described. FIG. 9B is a perspective view showing the configuration of this mobile phone. As shown in the figure, a cellular phone 720 includes a plurality of operation buttons 721, a reception port 722, a transmission port 723, and a display unit 724 to which the liquid crystal device 1000 according to the present invention is applied.

なお、本発明に係る液晶装置１０００を適用可能な電子機器としては、図９（ａ）に示したパーソナルコンピュータや図９（ｂ）に示した携帯電話機の他にも、液晶テレビ、ビューファインダ型・モニタ直視型のビデオテープレコーダ、カーナビゲーション装置、ページャ、電子手帳、電卓、ワードプロセッサ、ワークステーション、テレビ電話、ＰＯＳ端末、ディジタルスチルカメラなどが挙げられる。   Note that examples of the electronic apparatus to which the liquid crystal device 1000 according to the present invention can be applied include a liquid crystal television and a viewfinder type in addition to the personal computer shown in FIG. 9A and the mobile phone shown in FIG. Monitor direct-view video tape recorders, car navigation devices, pagers, electronic notebooks, calculators, word processors, workstations, videophones, POS terminals, digital still cameras, etc.

本発明の第１実施形態に係る照明装置を備える液晶装置の構成を示す断面図。1 is a cross-sectional view illustrating a configuration of a liquid crystal device including an illumination device according to a first embodiment of the present invention. 第１実施形態に係る照明装置における光源の配置構造等を示す図。The figure which shows the arrangement structure etc. of the light source in the illuminating device which concerns on 1st Embodiment. 第２実施形態に係る照明装置を備える液晶装置の構成を示す断面図。Sectional drawing which shows the structure of a liquid crystal device provided with the illuminating device which concerns on 2nd Embodiment. 第３実施形態に係る照明装置を備える液晶装置の構成を示す断面図。Sectional drawing which shows the structure of a liquid crystal device provided with the illuminating device which concerns on 3rd Embodiment. 変形例１及び２に係る照明装置における光源の配置構造を示す平面図。The top view which shows the arrangement structure of the light source in the illuminating device which concerns on the modifications 1 and 2. FIG. 変形例３乃至５に係る照明装置における光源の配置構造を示す平面図。The top view which shows the arrangement structure of the light source in the illuminating device which concerns on the modification 3 thru | or 5. 変形例６に係る照明装置における光源の配置構造を示す平面図。The top view which shows the arrangement structure of the light source in the illuminating device which concerns on the modification 6. FIG. 変形例７等に係る照明装置における光源の配置構造を示す平面図。The top view which shows the arrangement structure of the light source in the illuminating device which concerns on the modified example 7 grade | etc.,. 本発明の液晶装置を備える電子機器の斜視図。FIG. 14 is a perspective view of an electronic device including the liquid crystal device of the invention.

符号の説明Explanation of symbols

１１ 光源、 １１Ｌ 光の領域、 １２ 基板（基材）、 １２ｆ 一方の面、 １２ｆａ 凹部、 １３ 支持部材、 １４ 第１の拡散板、 １５ プリズムシート、 １６ 第２の拡散板、 ５０ 液晶表示パネル、 ５１、５１ａ、５１ｂ、６０、６０ｓ、６０ｔ、６０ｕ、６０ｖ、６０ｗ、６０ｘ、６０ｙ、６０ｚ 照明装置、 ７０ 反射部材、 １００、１００ａ、１００ｂ 液晶装置、 Ｅ 空間、 Ｏ 中心、 Ｌ１ 法線、 Ｌ２ 平行線、 Ｌ３ 中心軸、 Ｌ４、Ｌ５ 中心線、 Ｖ１ 表示領域、 Ｖ２ 非表示領域   DESCRIPTION OF SYMBOLS 11 Light source, 11L light area | region, 12 board | substrate (base material), 12f one side, 12fa recessed part, 13 support member, 14 1st diffuser plate, 15 prism sheet, 16 2nd diffuser plate, 50 liquid crystal display panel, 51, 51a, 51b, 60, 60s, 60t, 60u, 60v, 60w, 60x, 60y, 60z Illumination device, 70 Reflective member, 100, 100a, 100b Liquid crystal device, E space, O center, L1 normal, L2 parallel Line, L3 center axis, L4, L5 center line, V1 display area, V2 non-display area

Claims (8)

複数の光源と、
外辺に囲まれる平坦形状を有し、前記複数の光源を保持する基材と、を備え、
前記複数の光源の各々は前記基材の一方の面側に行列状又は同心円状に配置されており、
前記複数の光源には、前記基材の一方の面の中心領域に配置され、前記基材の一方の面の法線方向に光を出射する基準光源が含まれ、
前記複数の光源の各々から出射される光の主出射方向と、前記基準光源の光の主出射方向とのなす角度は、当該光源の配置される位置が前記基準光源から前記外辺に向かうほど大きくなるように設定される、
照明装置。 Multiple light sources;
A substrate having a flat shape surrounded by an outer side and holding the plurality of light sources, and
Each of the plurality of light sources is arranged in a matrix or concentric form on one surface side of the base material,
The plurality of light sources includes a reference light source that is disposed in a central region of one surface of the base material and emits light in a normal direction of the one surface of the base material.
The angle formed between the main emission direction of the light emitted from each of the plurality of light sources and the main emission direction of the light of the reference light source is such that the position where the light source is arranged goes from the reference light source to the outer side. Set to be larger,
Lighting device. 前記基準光源の光の主出射方向と、前記複数の光源の光の主出射方向とのなす角度は、前記光源の配置される位置が前記基材の前記外辺に向かうほど順次大きくなる、
請求項１に記載の照明装置。 The angle formed between the main emission direction of the light from the reference light source and the main emission direction of the light from the plurality of light sources sequentially increases as the position at which the light source is arranged goes to the outer side of the substrate.
The lighting device according to claim 1. 前記基準光源を有する光源パターン領域が前記基材の一方の面側に複数配置されている、
請求項１又は２に記載の照明装置。 A plurality of light source pattern regions having the reference light source are disposed on one surface side of the base material,
The lighting device according to claim 1 or 2. 前記複数の光源の各々は、当該光源の光の主出射方向と前記基準光源の光の主出射方向とのなす角度が、前記基材の一方の面側に配置された前記基準光源を通り、前記基材の一方の面を２つの領域に分ける基準線に対して少なくとも線対称をなす角度となるように前記基材の一方の面側に配置されている、
請求項１又は２に記載の照明装置。 Each of said plurality of light sources, the angle between the main emission direction of the light in the main emission direction as the reference light source of the light source light, Ri through the reference light source disposed on one surface side of the substrate , Arranged on one surface side of the base material so as to have an angle that is at least line symmetric with respect to a reference line dividing one surface of the base material into two regions ,
The lighting device according to claim 1 or 2. 前記複数の光源の各々は、当該光源の光の主出射方向と前記基準光源の光の主出射方向とのなす角度が、前記基準光源を中心として点対称をなす角度となるように前記基材の一方の面側に配置されている、
請求項１又は２に記載の照明装置。 Each of said plurality of light sources, the angle between the main emission direction of the light in the main emission direction as the reference light source of the light source light, the substrate such that the angle formed with point symmetry about said reference light source Arranged on one side of the
The lighting device according to claim 1 or 2. 前記複数の光源が同心円状に配置されるとき、
前記基材の一方の面において、円状に配列された一群の前記光源に対して、外側に且つ隣り合う位置に円状に配列された他の一群の前記光源の各々は、内側の前記一群の前記光源の各々の間に対応する位置に配置されている、
請求項１乃至５のいずれか一項に記載の照明装置。 When the plurality of light sources are arranged concentrically,
On one side of the base material, each of the other group of the light sources arranged in a circle at the outer side and adjacent positions with respect to the group of the light sources arranged in a circle is the inner group. Are disposed at corresponding positions between each of the light sources,
The illumination device according to any one of claims 1 to 5. 前記複数の光源の各々の少なくとも一部は、前記基材の一方の面に、底面が前記基材の一方の面の平坦面に対して傾斜角度を有して形成された凹部によって保持されており、
前記複数の光源を保持する凹部は、前記基材の一方の面に行列状又は同心円状に配置されるとともに、前記底面の傾斜角度が前記基材の一方の面における前記基準光源が配置される位置から外辺に向かうほど大きくなる角度に設定される、
請求項１乃至６のいずれか一項に記載の照明装置。 At least a part of each of the plurality of light sources is held on one surface of the base material by a recess formed with a bottom surface having an inclination angle with respect to a flat surface of the one surface of the base material. And
Recesses for holding the plurality of light sources is arranged on one surface of the base material in the matrix-like or concentric Rutotomoni, the inclination angle of the bottom surface is the reference light source at one surface of the base material is disposed that Ru is set to larger angle increases toward the outer side from the position,
The illumination device according to any one of claims 1 to 6. 前記基材の一方の面には、前記複数の光源の各々を保持する保持面を備える保持部材が配置されており、
前記基材の一方の面に対する前記保持部材の各々の前記保持面の傾斜角度は、前記基材の一方の面における前記基準光源が配置される位置から外辺に向かうほど大きくなる角度に設定され、
前記複数の光源の各々は、前記保持部材の各々の前記保持面に当接して配置されていると共に、当該光源の各々から出射される光の主出射方向と、前記保持部材の各々の前記保持面に対する各法線方向とは略平行である、
請求項１乃至６のいずれか一項に記載の照明装置。
A holding member having a holding surface that holds each of the plurality of light sources is disposed on one surface of the base material,
The inclination angle of each holding surface of each of the holding members with respect to one surface of the base material is set to an angle that increases toward the outer side from the position where the reference light source is disposed on the one surface of the base material. ,
Each of the plurality of light sources is disposed in contact with the holding surface of each of the holding members, and a main emission direction of light emitted from each of the light sources, and the holding of each of the holding members. Each normal direction to the surface is substantially parallel,
The illumination device according to any one of claims 1 to 6.
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