JPH1021720A - Backlight device - Google Patents
Backlight deviceInfo
- Publication number
- JPH1021720A JPH1021720A JP8167409A JP16740996A JPH1021720A JP H1021720 A JPH1021720 A JP H1021720A JP 8167409 A JP8167409 A JP 8167409A JP 16740996 A JP16740996 A JP 16740996A JP H1021720 A JPH1021720 A JP H1021720A
- Authority
- JP
- Japan
- Prior art keywords
- light
- guide plate
- light guide
- backlight device
- light source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Light Guides In General And Applications Therefor (AREA)
- Liquid Crystal (AREA)
- Planar Illumination Modules (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
【発明の属する技術分野】本発明は、液晶表示装置用バ
ックライトに関し、特に導光板の端部に線状光源を配置
したエッジライト型の液晶表示装置に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backlight for a liquid crystal display device, and more particularly to an edge-light type liquid crystal display device having a linear light source disposed at an end of a light guide plate.
【０００１】[0001]
【従来の技術】携帯性を重視する情報端末や、ノート型
パソコン、ワードプロセッサのディスプレイとして薄型
のバックライト装置を有する液晶表示装置が用いられて
いる。このようなバックライト装置は、導光板の端面に
蛍光管のような線状光源を併設するエッジライト型がよ
く用いられている。2. Description of the Related Art A liquid crystal display device having a thin backlight device has been used as a display of an information terminal, a notebook computer, or a word processor which emphasizes portability. As such a backlight device, an edge light type in which a linear light source such as a fluorescent tube is provided on an end face of a light guide plate is often used.
【０００２】しかしながら、このエッジライト型のバッ
クライト装置は、線状光源に近い部分の輝度が高く、光
源から離れるに従い輝度が低下するといった問題があ
り、照光面全体の輝度の均一化を図る必要がある。However, this edge-light type backlight device has a problem that the luminance near the linear light source is high and the luminance decreases as the distance from the light source increases, and it is necessary to make the luminance of the entire illumination surface uniform. There is.
【０００３】たとえば、特開平２−１６０２１５号に
は、導光板の裏面に光散乱物質を被覆させ、その被覆率
を光源からの距離に対して変化させることにより輝度の
均一化を図る技術が記述されている。図５は従来のバッ
クライト装置の一例を示す外観図であって、１は導光
板、２は反射板、３は拡散板、４は線状光源、５は線状
光源のハウジングである。For example, Japanese Patent Application Laid-Open No. 2-160215 describes a technique for coating a light-scattering substance on the back surface of a light guide plate and changing the coverage with respect to the distance from a light source to make the luminance uniform. Have been. FIG. 5 is an external view showing an example of a conventional backlight device, wherein 1 is a light guide plate, 2 is a reflection plate, 3 is a diffusion plate, 4 is a linear light source, and 5 is a housing of a linear light source.
【０００４】図６は導光板１に被覆された光散乱物質６
ａを例示する正面図である。導光板１には、図６に示す
ようにドット状にかつ特定の分布をもたせつつ、連続的
にその被覆割合を変化させた光散乱物質６ａが塗装ある
いは印刷によって被覆されている。線状光源４から発せ
られた光は導光板１に入射され、導光板１に被覆された
光散乱物質６ａ及び反射板２によりバックライト装置前
面から照射される。このとき導光板１に被覆された光散
乱物質６ａの被覆率を制御することにより、線状光源４
に近い部分と離れた部分の輝度差をなくすことができ
る。FIG. 6 shows a light scattering material 6 coated on a light guide plate 1.
It is a front view which illustrates a. As shown in FIG. 6, the light guide plate 1 is coated with a light-scattering substance 6a having a dot-shaped and specific distribution and a continuously changing coverage ratio by painting or printing. Light emitted from the linear light source 4 is incident on the light guide plate 1 and is irradiated from the front surface of the backlight device by the light scattering material 6a and the reflection plate 2 coated on the light guide plate 1. At this time, the linear light source 4 is controlled by controlling the coverage of the light scattering material 6a coated on the light guide plate 1.
It is possible to eliminate the difference in brightness between the part close to and the part far from.
【０００５】同様に導光板１に光散乱物質をドットまた
はストライプ状に形成するとして特開平７−２８７１２
５号に記述されている。[0005] Similarly, a light scattering material is formed on the light guide plate 1 in the form of dots or stripes.
No.5.
【０００６】また、特開平４−１９１７０４号には、導
光板１と反射板２との間に、線状光源４から遠ざかるに
つれてその面積が次第に大きくなるような透明物質のパ
ターンの接着層を設け、反射板２の撓みや歪みによって
発生する導光板１と反射板２の隙間を防ぐ技術が記述さ
れている。図７は従来のバックライト装置の一例を示す
断面図であって、１は導光板、２は反射板、３は拡散
板、４は線状光源、５は線状光源のハウジング、６は透
明パターン接着層である。導光板１と反射板２が広い範
囲で接着されることにより反射板２が撓んだり歪んだり
することがなく、導光板１と反射板２との間に余分な空
気層ができないため、部分的に輝度が低下あるいは増加
することがない。同様に透明パターン接着層６ｂにより
導光板１と反射板２とを接着する例が実開平４−８５４
８２号、実開平６−７６９３５号に記述されている。In Japanese Patent Application Laid-Open No. 4-191704, an adhesive layer having a pattern of a transparent substance is provided between the light guide plate 1 and the reflection plate 2 so that the area thereof gradually increases as the distance from the linear light source 4 increases. A technique for preventing a gap between the light guide plate 1 and the reflection plate 2 caused by bending or distortion of the reflection plate 2 is described. FIG. 7 is a sectional view showing an example of a conventional backlight device, wherein 1 is a light guide plate, 2 is a reflection plate, 3 is a diffusion plate, 4 is a linear light source, 5 is a housing of a linear light source, and 6 is transparent. It is a pattern adhesive layer. Since the light guide plate 1 and the reflection plate 2 are bonded in a wide range, the reflection plate 2 does not bend or distort, and no extra air layer is formed between the light guide plate 1 and the reflection plate 2. The brightness does not decrease or increase in nature. Similarly, an example in which the light guide plate 1 and the reflection plate 2 are bonded by the transparent pattern bonding layer 6b is disclosed in Japanese Utility Model Laid-Open Publication No.
82, and Japanese Utility Model Laid-Open No. 6-76935.
【０００７】[0007]
【発明が解決しようとする課題】しかし、上述した従来
のバックライト装置は、構造や製法の条件により輝度の
均一性のばらつきが生じやすい。However, in the above-mentioned conventional backlight device, the uniformity of luminance tends to vary depending on the structure and manufacturing conditions.
【０００８】例えば、導光板１に光散乱物質６ａを被覆
させた場合は、導光板１と反射シート２との間の隙間が
一定せず、反射板２の撓みや歪みがあった場合に導光板
１と反射板２との間に余分な空気層が生じ、部分的な輝
度の低下または増加により輝度の均一性が著しく低下す
る。For example, when the light guide plate 1 is coated with the light scattering material 6a, the gap between the light guide plate 1 and the reflection sheet 2 is not constant, and the light guide plate 1 is bent when the reflection plate 2 is bent or distorted. An extra air layer is generated between the light plate 1 and the reflection plate 2, and the uniformity of the luminance is significantly reduced due to the partial decrease or increase of the luminance.
【０００９】また、導光板１と反射板２とを透明パター
ン接着層６ｂで接着した場合は、接着部における光の反
射は反射板２と接着層６ｂの界面でおこなわれるもので
あり、接着剤の量あるいは貼りつけ時にかかる圧力のば
らつき、導光板１に反りがあった場合などに接着層６ｂ
の厚みが均一にならないため輝度の均一性が低下する。When the light guide plate 1 and the reflection plate 2 are adhered to each other with the transparent pattern adhesive layer 6b, the reflection of light at the adhesion portion is performed at the interface between the reflection plate 2 and the adhesion layer 6b. When the light guide plate 1 is warped, the amount of the adhesive layer 6b
Is not uniform, so that the uniformity of luminance is reduced.
【００１０】[0010]
【課題を解決するための手段】本発明のバックライト装
置は、上述した課題を解消するため、導光板と反射板と
を光散乱物質を含む接着剤で貼りあわせる構造としたこ
とで、導光板から反射板が浮いて余分な空気層が生じる
ことがない。In order to solve the above-mentioned problems, the backlight device of the present invention has a structure in which the light guide plate and the reflection plate are bonded together with an adhesive containing a light scattering substance. An extra air layer is not generated due to the floating of the reflection plate.
【００１１】また、接着部における光の反射は導光板１
と接着層６ｂとの界面でおこなわれるものであり、輝度
の均一性が接着層６ｂの厚みの均一性により左右されな
い。The light reflection at the bonding portion is caused by the light guide plate 1.
This is performed at the interface between the bonding layer 6b and the brightness, and the uniformity of luminance is not affected by the uniformity of the thickness of the bonding layer 6b.
【００１２】[0012]
【発明の実施の形態】次に本発明の実施の形態について
図面を参照して詳細に説明する。Embodiments of the present invention will now be described in detail with reference to the drawings.
【００１３】図１は本実施形態例のバックライト装置を
示した斜視図、図２は本実施形態例のバックライト装置
の断面図、図３は図２における光散乱物質を含む接着層
近傍の詳細図、図４は光散乱物質を含有する接着層を例
示する正面図であって、１は導光板、２は反射板、３は
拡散板、４は線状光源、５はハウジング、６は光散乱物
質を含有した接着層、７は光散乱物質である。FIG. 1 is a perspective view showing a backlight device of this embodiment, FIG. 2 is a cross-sectional view of the backlight device of this embodiment, and FIG. 3 is a view showing the vicinity of an adhesive layer containing a light scattering substance in FIG. FIG. 4 is a front view illustrating an adhesive layer containing a light scattering substance, wherein 1 is a light guide plate, 2 is a reflection plate, 3 is a diffusion plate, 4 is a linear light source, 5 is a housing, and 6 is The adhesive layer 7 containing a light scattering substance is a light scattering substance.
【００１４】図３において、線状光源４及びハウジング
５から導光板１内へ入射した光ａ，ｂ，ｃは、導光板１
内で反射を繰り返しながら進み、導光板１の裏面に達す
る。その際、導光板１の裏面において光散乱物質７を含
有した接着層６が形成されている部分へ達した光ａは、
接着層中６に含まれる光散乱物質７に当たり、光散乱物
質７との角度に応じ、透過あるいはバックライト装置の
前面方向へ反射する。また、光散乱物質７を含む接着層
６が形成されていない部分へ達した光のうち、臨界角以
上の角度で入射した光ｂは、ほぼ全反射されて線状光源
４と反対方向へ進む。また、光散乱物質７を含む接着層
６が形成されていない部分へ達した光のうち、臨界角よ
り小さな角度で入射した光ｃは、反射板２で散乱反射さ
れバックライト装置の前面方向へ反射する。In FIG. 3, light a, b, and c incident on the light guide plate 1 from the linear light source 4 and the housing 5 are reflected by the light guide plate 1.
The light travels while repeating reflection within the light guide plate 1 and reaches the back surface of the light guide plate 1. At this time, the light a reaching the portion on the back surface of the light guide plate 1 where the adhesive layer 6 containing the light scattering substance 7 is formed,
The light strikes the light scattering material 7 contained in the adhesive layer 6 and transmits or reflects toward the front of the backlight device according to the angle with the light scattering material 7. Further, of the light reaching the portion where the adhesive layer 6 including the light scattering substance 7 is not formed, the light b incident at an angle equal to or greater than the critical angle is almost totally reflected and proceeds in the direction opposite to the linear light source 4. . Further, of the light reaching the portion where the adhesive layer 6 containing the light scattering substance 7 is not formed, the light c incident at an angle smaller than the critical angle is scattered and reflected by the reflector 2 and is directed toward the front of the backlight device. reflect.
【００１５】ここで、ｃの経路を進む光の多くは線状光
源４に近い部分でバックライト装置の前面から導光板１
の外へ照射され、線状光源４から離れるにしたがいｂま
たはａの経路の光が多くなる。Here, most of the light traveling along the path c is close to the linear light source 4 from the front surface of the backlight device.
And the light in the path b or a increases as the distance from the linear light source 4 increases.
【００１６】したがって、光反射物質７を含む接着層６
を、光源からの距離に応じて大きくなるように形成する
ことにより、ａの経路でバックライト装置の前面から導
光板１の外へ照射されるようになり、バックライト装置
全面の輝度均一性が良好となる。Therefore, the adhesive layer 6 containing the light reflecting substance 7
Is formed so as to increase according to the distance from the light source, so that the light is radiated from the front surface of the backlight device to the outside of the light guide plate 1 through the path a, and the brightness uniformity of the entire backlight device is improved. It will be good.
【００１７】また、導光板１と反射板２が光散乱物質７
を含む接着層６により固定されるため導光板１と反射板
２との間に余分な空気層が生じることがなく、光ｃの経
路が安定するため輝度の均一性にばらつきがなく、安定
した品質のバックライト装置を得ることができる。The light guide plate 1 and the reflection plate 2 are made of a light scattering material 7.
Is fixed by the adhesive layer 6 including the light guide plate 1 and the reflection plate 2 without an extra air layer, and the path of the light c is stable, so that there is no variation in the uniformity of luminance and the light is stable. A backlight device of quality can be obtained.
【実施例】次に、本発明の実施例について図面を参照し
て詳細に説明する。Next, embodiments of the present invention will be described in detail with reference to the drawings.
【００１８】図２において、導光板１はアクリル等の透
明部材である。導光板１の側面には線状光源４が配置さ
れ、線状光源４を覆うように反射率の高い材質のハウジ
ング５が配置され、線状光源４からの光が効率よく導光
板１内に入射するような構成となっている。In FIG. 2, the light guide plate 1 is a transparent member such as acrylic. A linear light source 4 is disposed on a side surface of the light guide plate 1, and a housing 5 made of a material having a high reflectance is disposed so as to cover the linear light source 4, so that light from the linear light source 4 efficiently enters the light guide plate 1. It is configured to be incident.
【００１９】導光板１の上面には、導光板１から照射さ
れた光を拡散させるためのシート状の拡散層３が配置さ
れている。また必要に応じて、拡散層３の上面に不図示
の集光層を配置することもある。On the upper surface of the light guide plate 1, a sheet-like diffusion layer 3 for diffusing light emitted from the light guide plate 1 is arranged. If necessary, a light-collecting layer (not shown) may be arranged on the upper surface of the diffusion layer 3.
【００２０】導光板１の下部には、図３に示す光散乱物
質７を含んだ接着層６が形成されており、さらに下部に
配置された反射板２と導光板１とが固定される。この接
着層６は透明な接着剤の中に光散乱物質７を混入させた
ものであり、接着剤は熱融着性、紫外線硬化性、感圧性
などのものを用いる。また、光散乱物質７は金属、樹
脂、無機物等の粒子でありＴｉＯ2 、ＢａＳＯ4 、Ｂａ
Ｏ2 などの物質を用いる。光散乱物質７を含んだ接着層
６は図４に示すように点状に形成されており、導光板１
内での占有面積は線状光源４から離れるにしたがって大
きくなるよう形成される。An adhesive layer 6 containing a light-scattering substance 7 shown in FIG. 3 is formed below the light guide plate 1, and the reflector 2 and the light guide plate 1 arranged further below are fixed. The adhesive layer 6 is obtained by mixing a light scattering substance 7 into a transparent adhesive, and uses an adhesive having a heat-sealing property, an ultraviolet curable property, a pressure-sensitive property, or the like. The light scattering material 7 is a particle such as a metal, a resin, or an inorganic material, and is made of TiO2, BaSO4, Ba.
Use a substance such as O2. The adhesive layer 6 containing the light scattering substance 7 is formed in a dot shape as shown in FIG.
The area occupied in the inside is formed so as to increase as the distance from the linear light source 4 increases.
【００２１】実際の製造において、光散乱物質７の粒子
径は、液晶表示パネルの画素の大きさ、光の散乱度合、
印刷版のメッシュサイズ等の条件により０．１ミクロン
から１ミクロン程度の大きさが好ましく、接着剤中の混
合比は接着性、光の散乱度合等の条件により５０％から
９０％程度の量が好ましい。In actual production, the particle size of the light scattering material 7 is determined by the size of the pixel of the liquid crystal display panel, the degree of light scattering,
The size of the printing plate is preferably about 0.1 to 1 micron depending on the conditions such as the mesh size, and the mixing ratio in the adhesive is about 50% to 90% depending on the conditions such as adhesion and light scattering. preferable.
【００２２】線状光源４からの光は、ハウジング５での
反射光を含めて導光板１内に入射する。導光板１内に入
射した光は一部は導光板から出射し、拡散層３で拡散さ
れてバックライト前面から照射される。導光板から出射
されなかった光はさらに導光板１内を線状光源４と反対
方向へと反射を繰り返して進む。ここで導光板１内の接
着層６の占有面積が線状光源から離れるにしたがって大
きくなっているため、光源から離れた部分では接着層６
に含まれる光散乱物質７で散乱する機会が増すこととな
り前面での輝度均一性が良好なものとなる。The light from the linear light source 4 enters the light guide plate 1 including the light reflected on the housing 5. Part of the light incident on the light guide plate 1 is emitted from the light guide plate, is diffused by the diffusion layer 3 and is irradiated from the front surface of the backlight. Light that has not been emitted from the light guide plate further travels in the light guide plate 1 by repeatedly reflecting in the direction opposite to the linear light source 4. Here, since the area occupied by the adhesive layer 6 in the light guide plate 1 increases as the distance from the linear light source increases, the portion of the adhesive layer 6 remote from the light source increases.
And the chance of scattering by the light scattering material 7 contained in the light-emitting material increases, and the uniformity of the luminance on the front surface is improved.
【００２３】[0023]
【発明の効果】以上説明したように、本発明のバックラ
イト装置は、光反射物質の粒子を含んだ接着材で導光板
と反射板とを貼りあわせた構造としたため、光反射物質
の粒子を含んだ接着材の面積あるいは、光反射物質の量
を制御することで輝度の均一性を高めることができ、ま
た反射が導光板と光反射物質との界面でおこなわれるこ
とにより接着材の貼りつけのばらつきに左右されず輝度
均一性の調整が容易である。As described above, the backlight device of the present invention has a structure in which the light guide plate and the reflection plate are bonded to each other with an adhesive containing the particles of the light reflection material. The uniformity of brightness can be improved by controlling the area of the included adhesive or the amount of the light-reflecting material, and the bonding of the adhesive can be achieved by reflection at the interface between the light guide plate and the light-reflecting material. The adjustment of the brightness uniformity is easy without being influenced by the variation of the brightness.
【図１】本発明によるバックライト装置の一実施例を示
す斜視図である。FIG. 1 is a perspective view showing an embodiment of a backlight device according to the present invention.
【図２】本発明によるバックライト装置の一実施例を示
す断面図である。FIG. 2 is a sectional view showing an embodiment of a backlight device according to the present invention.
【図３】図２に示される構造の部分詳細図である。FIG. 3 is a partial detailed view of the structure shown in FIG. 2;
【図４】光散乱物質を含有する接着層を例示する正面図
である。FIG. 4 is a front view illustrating an adhesive layer containing a light scattering substance.
【図５】従来のバックライト装置の一実施例を示す斜視
図である。FIG. 5 is a perspective view showing one embodiment of a conventional backlight device.
【図６】従来のバックライト装置の一実施例を示す正面
図である。FIG. 6 is a front view showing one embodiment of a conventional backlight device.
【図７】従来のバックライト装置の一実施例を示す断面
図である。FIG. 7 is a cross-sectional view showing one embodiment of a conventional backlight device.
１ 導光板 ２ 反射板 ３ 拡散板 ４ 線状光源 ５ ハウジング ６ 光散乱物質を含有する接着層 ６ａ 光散乱物質を含有する印刷層 ６ｂ 透明接着層 ７ 光散乱物質 REFERENCE SIGNS LIST 1 light guide plate 2 reflection plate 3 diffusion plate 4 linear light source 5 housing 6 adhesive layer containing light scattering substance 6a printing layer containing light scattering substance 6b transparent adhesive layer 7 light scattering substance
Claims (5)
一側面に線状光源を有し、導光板の背面に配置した反射
板と、前面に配置した拡散板により線状光源から発せら
れた光を導光板前面から照射させるバックライト装置に
おいて、導光板と反射板とが、光散乱物質の粒子を含む
接着材層によって接合されており、光散乱物質の粒子を
含む接着層を、その面積が線状光源からの距離が大にな
るにつれて大となるようドット状に設置されたバックラ
イト装置。1. A linear light source is provided on at least one side of a light guide plate made of a translucent material, and is emitted from the linear light source by a reflector disposed on a back surface of the light guide plate and a diffusion plate disposed on a front surface of the light guide plate. In a backlight device that irradiates light from the front surface of a light guide plate, the light guide plate and the reflection plate are joined by an adhesive layer containing particles of the light scattering substance, and the adhesive layer containing the particles of the light scattering substance has an area of The backlight device is provided in a dot-like manner so as to increase as the distance from the linear light source increases.
の粒子であることを特徴とする請求項１記載のバックラ
イト装置。2. The backlight device according to claim 1, wherein the light scattering substance is a particle such as a metal, a resin, or an inorganic substance.
する請求項１記載のバックライト装置。3. The backlight device according to claim 1, wherein the adhesive layer has a circular shape.
ンから１ミクロンであることを特徴とする請求項１記載
のバックライト装置。4. The backlight device according to claim 1, wherein the particle size of the light scattering material is 0.1 μm to 1 μm.
が５０％から９０％であることを特徴とする請求項１記
載のバックライト装置。5. The backlight device according to claim 1, wherein a mixing ratio of the light scattering substance in the adhesive is 50% to 90%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8167409A JPH1021720A (en) | 1996-06-27 | 1996-06-27 | Backlight device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8167409A JPH1021720A (en) | 1996-06-27 | 1996-06-27 | Backlight device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1021720A true JPH1021720A (en) | 1998-01-23 |
Family
ID=15849167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8167409A Pending JPH1021720A (en) | 1996-06-27 | 1996-06-27 | Backlight device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1021720A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11224519A (en) * | 1998-02-09 | 1999-08-17 | Omron Corp | Surface light source device |
| JP2001043721A (en) * | 1999-07-28 | 2001-02-16 | Sanyo Electric Co Ltd | Surface light source device and display device |
| JP2001043720A (en) * | 1999-07-28 | 2001-02-16 | Sanyo Electric Co Ltd | Surface light source device and display device |
| JP2003511727A (en) * | 1999-10-08 | 2003-03-25 | スリーエム イノベイティブ プロパティズ カンパニー | Light guide to which reflector is directly fixed and method of manufacturing the same |
| JP2003197003A (en) * | 2001-12-25 | 2003-07-11 | Matsushita Electric Ind Co Ltd | Linear light-emitting body and induction heating cooker |
| JP2004265880A (en) * | 2004-06-21 | 2004-09-24 | Matsushita Electric Ind Co Ltd | Induction heating cooker |
| JP2004273468A (en) * | 2004-06-21 | 2004-09-30 | Matsushita Electric Ind Co Ltd | Induction heating cooking device |
| JP2004335481A (en) * | 2004-06-21 | 2004-11-25 | Matsushita Electric Ind Co Ltd | Induction heating cooker |
| JP2006004899A (en) * | 2004-06-18 | 2006-01-05 | Hitoshi Tokimine | Guide light |
| US7109450B2 (en) | 2001-07-03 | 2006-09-19 | Matsushita Electric Industrial Co., Ltd. | Line type luminous device and induction heating cooker employing same |
| JP2006253139A (en) * | 2005-03-10 | 2006-09-21 | Au Optronics Corp | Backlight module |
| JP2007504982A (en) * | 2003-09-08 | 2007-03-08 | コニンクリユケ フィリップス エレクトロニクス エヌ．ブイ． | Daylight luminescent panel |
| JP2007157540A (en) * | 2005-12-06 | 2007-06-21 | Hitachi Displays Ltd | Display device and surface light source device |
| JP2008091193A (en) * | 2006-10-02 | 2008-04-17 | Matsushita Electric Ind Co Ltd | Induction cooker |
| JP2010146784A (en) * | 2008-12-17 | 2010-07-01 | Sony Corp | Planar light-emitting device |
| US20110134657A1 (en) * | 2008-08-13 | 2011-06-09 | Kevin Joseph Hathaway | Light-pipe based identification and location signaling light |
| WO2011074365A1 (en) * | 2009-12-17 | 2011-06-23 | シャープ株式会社 | Illuminating device, display device, and television receiver |
| JP2012023058A (en) * | 2011-10-31 | 2012-02-02 | Panasonic Corp | Induction heating cooker |
| JP2012521616A (en) * | 2009-03-25 | 2012-09-13 | ピクサラックス イノベーションズ ピーティーワイ リミテッド | Lighting panel |
| KR101347092B1 (en) * | 2011-11-16 | 2014-01-06 | 김성제 | color ligh guide panel |
| WO2015151142A1 (en) * | 2014-03-31 | 2015-10-08 | 堺ディスプレイプロダクト株式会社 | Light source device and display device |
| TWI513942B (en) * | 2008-08-06 | 2015-12-21 | Opto Design Inc | A light source device, a lighting device and a display device |
| EP3147561A1 (en) | 2016-03-14 | 2017-03-29 | Evonik Röhm GmbH | Light guide panels for use outdoor and in wet areas |
| JPWO2016056052A1 (en) * | 2014-10-06 | 2017-07-27 | 堺ディスプレイプロダクト株式会社 | Light guide unit, light source device, and display device |
| WO2017131986A1 (en) * | 2016-01-27 | 2017-08-03 | Microsoft Technology Licensing, Llc | Providing structural support via backlight system |
| JP2017227534A (en) * | 2016-06-22 | 2017-12-28 | シーシーエス株式会社 | Light irradiation device and inspection system |
| CN108885370A (en) * | 2016-04-15 | 2018-11-23 | 株式会社Lg化学 | Guide-lighting plate unit, back light unit and liquid crystal display device including it |
| US10243510B2 (en) | 2009-03-25 | 2019-03-26 | Pixalux Innovations Pty Ltd | Illumination panel |
| WO2019077375A1 (en) * | 2017-10-21 | 2019-04-25 | Optrical Limited | Diffusive reflector for a lighting apparatus |
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| US12001047B2 (en) | 2021-11-24 | 2024-06-04 | Nichia Corporation | Surface light source |
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| JPH04191704A (en) * | 1990-11-26 | 1992-07-10 | Nissha Printing Co Ltd | Surface luminous device and its manufacture |
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Cited By (43)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11224519A (en) * | 1998-02-09 | 1999-08-17 | Omron Corp | Surface light source device |
| JP2001043721A (en) * | 1999-07-28 | 2001-02-16 | Sanyo Electric Co Ltd | Surface light source device and display device |
| JP2001043720A (en) * | 1999-07-28 | 2001-02-16 | Sanyo Electric Co Ltd | Surface light source device and display device |
| JP2003511727A (en) * | 1999-10-08 | 2003-03-25 | スリーエム イノベイティブ プロパティズ カンパニー | Light guide to which reflector is directly fixed and method of manufacturing the same |
| US7109450B2 (en) | 2001-07-03 | 2006-09-19 | Matsushita Electric Industrial Co., Ltd. | Line type luminous device and induction heating cooker employing same |
| JP2003197003A (en) * | 2001-12-25 | 2003-07-11 | Matsushita Electric Ind Co Ltd | Linear light-emitting body and induction heating cooker |
| JP2007504982A (en) * | 2003-09-08 | 2007-03-08 | コニンクリユケ フィリップス エレクトロニクス エヌ．ブイ． | Daylight luminescent panel |
| JP2006004899A (en) * | 2004-06-18 | 2006-01-05 | Hitoshi Tokimine | Guide light |
| JP2004265880A (en) * | 2004-06-21 | 2004-09-24 | Matsushita Electric Ind Co Ltd | Induction heating cooker |
| JP2004273468A (en) * | 2004-06-21 | 2004-09-30 | Matsushita Electric Ind Co Ltd | Induction heating cooking device |
| JP2004335481A (en) * | 2004-06-21 | 2004-11-25 | Matsushita Electric Ind Co Ltd | Induction heating cooker |
| JP2006253139A (en) * | 2005-03-10 | 2006-09-21 | Au Optronics Corp | Backlight module |
| JP2007157540A (en) * | 2005-12-06 | 2007-06-21 | Hitachi Displays Ltd | Display device and surface light source device |
| JP4579146B2 (en) * | 2005-12-06 | 2010-11-10 | 株式会社 日立ディスプレイズ | Display device and planar light source device |
| US8085360B2 (en) | 2005-12-06 | 2011-12-27 | Hitachi Displays, Ltd. | Display device and planar light source device |
| US8817205B2 (en) | 2005-12-06 | 2014-08-26 | Japan Display Inc. | Display device and planar light source device |
| US8416364B2 (en) | 2005-12-06 | 2013-04-09 | Hitachi Displays, Ltd. | Display device and planar light source device |
| JP2008091193A (en) * | 2006-10-02 | 2008-04-17 | Matsushita Electric Ind Co Ltd | Induction cooker |
| TWI513942B (en) * | 2008-08-06 | 2015-12-21 | Opto Design Inc | A light source device, a lighting device and a display device |
| US20110134657A1 (en) * | 2008-08-13 | 2011-06-09 | Kevin Joseph Hathaway | Light-pipe based identification and location signaling light |
| US8297820B2 (en) * | 2008-08-13 | 2012-10-30 | Kevin Joseph Hathaway | Light-pipe based identification and location signaling light |
| JP2010146784A (en) * | 2008-12-17 | 2010-07-01 | Sony Corp | Planar light-emitting device |
| JP2012521616A (en) * | 2009-03-25 | 2012-09-13 | ピクサラックス イノベーションズ ピーティーワイ リミテッド | Lighting panel |
| US10673378B2 (en) | 2009-03-25 | 2020-06-02 | Pixalux Innovations Pty Ltd | Illumination panel |
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| US9016919B2 (en) | 2009-12-17 | 2015-04-28 | Sharp Kabushiki Kaisha | Lighting device, display device and television receiver |
| WO2011074365A1 (en) * | 2009-12-17 | 2011-06-23 | シャープ株式会社 | Illuminating device, display device, and television receiver |
| JP2012023058A (en) * | 2011-10-31 | 2012-02-02 | Panasonic Corp | Induction heating cooker |
| KR101347092B1 (en) * | 2011-11-16 | 2014-01-06 | 김성제 | color ligh guide panel |
| WO2015151142A1 (en) * | 2014-03-31 | 2015-10-08 | 堺ディスプレイプロダクト株式会社 | Light source device and display device |
| US9632228B2 (en) | 2014-03-31 | 2017-04-25 | Sakai Display Products Corporation | Light source device and display apparatus |
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| WO2017131986A1 (en) * | 2016-01-27 | 2017-08-03 | Microsoft Technology Licensing, Llc | Providing structural support via backlight system |
| EP3147561A1 (en) | 2016-03-14 | 2017-03-29 | Evonik Röhm GmbH | Light guide panels for use outdoor and in wet areas |
| CN108885370A (en) * | 2016-04-15 | 2018-11-23 | 株式会社Lg化学 | Guide-lighting plate unit, back light unit and liquid crystal display device including it |
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