JPH09274185A - Liquid crystal back light - Google Patents

Liquid crystal back light

Info

Publication number
JPH09274185A
JPH09274185A JP8110284A JP11028496A JPH09274185A JP H09274185 A JPH09274185 A JP H09274185A JP 8110284 A JP8110284 A JP 8110284A JP 11028496 A JP11028496 A JP 11028496A JP H09274185 A JPH09274185 A JP H09274185A
Authority
JP
Japan
Prior art keywords
pair
light
light sources
parallel
lead wire
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
Application number
JP8110284A
Other languages
Japanese (ja)
Inventor
Shinzo Murase
新三 村瀬
Kazuo Kishi
和雄 岸
Yoshimitsu Saito
善光 斎藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MEITAKU SYST KK
Original Assignee
MEITAKU SYST KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by MEITAKU SYST KK filed Critical MEITAKU SYST KK
Priority to JP8110284A priority Critical patent/JPH09274185A/en
Publication of JPH09274185A publication Critical patent/JPH09274185A/en
Pending legal-status Critical Current

Links

Landscapes

  • Planar Illumination Modules (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Liquid Crystal (AREA)

Abstract

PROBLEM TO BE SOLVED: To dissolve a trouble due to that a lead wire for lighting a light source of a liquid crystal back light exists. SOLUTION: The edge light panels 2 of the liquid crystal back light 1 are laminated to be made a pair, and light sources 11 are made parallel and a pair matching with that, and a reflector 14 is made an M shape, and a V shape reflection surface 17 is formed between curved reflection surfaces 16, and its reflection performance is secured. On the other hand, a V groove lead wire housing part 18 is formed on the outside of the V shape reflection surface 17, and the lead wire 12 is housed in it, and the matter that the lead wire 12 is projected from the reflector 14 is prevented.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は液晶表示面を背面照
明するに用いる液晶バックライトに関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal backlight used for backlighting a liquid crystal display surface.

【0002】[0002]

【従来の技術】この種液晶バックライトは,エッジライ
トパネルと,該エッジライトパネルの入射端面に対向す
る光源と,該光源に対応する湾曲反射面を具備したリフ
レクターとを備えたものとされ,より具体的には,一般
にエッジライトパネルは単一のものとし,その照明面側
に拡散シートを,背面側に反射シートを積層する一方,
光源は単一の冷陰極蛍光灯とし,リフレクターはC字状
としたものとされ,これらはケースに収納したバックラ
イトユニットとして液晶表示機器の液晶表示面背面に位
置するようにこれに搭載使用するものとされる。
2. Description of the Related Art This type of liquid crystal backlight is provided with an edge light panel, a light source facing an incident end face of the edge light panel, and a reflector having a curved reflecting surface corresponding to the light source. More specifically, the edge light panel is generally a single one, and a diffusion sheet is laminated on the illumination surface side and a reflection sheet is laminated on the back surface side,
The light source is a single cold cathode fluorescent lamp, and the reflector is C-shaped. These are mounted and used as a backlight unit housed in a case so as to be located on the back surface of the liquid crystal display surface of the liquid crystal display device. To be taken.

【0003】[0003]

【発明が解決しようとする課題】この場合,相当程度に
高輝度の背面照明を行う好ましいものとなし得るが,背
面照明を行う上で不可欠な光源点灯用のリード線は,細
径であるとしても一般にリフレクターに添って配設され
るために,このリフレクターとケースの間にあってその
ためのスペースを占有し,液晶バックライトの良好な納
まりを阻害したり,ケースを拡大する方向に作用して極
限的とすべきコンパクト化を阻害したりする要因とな
る。
In this case, although it may be preferable to perform back lighting with considerably high brightness, it is assumed that the lead wire for lighting the light source, which is indispensable for performing back lighting, has a small diameter. Also, since it is generally arranged along with the reflector, it occupies a space for this between the reflector and the case, hinders the LCD backlight from being properly housed, and acts to expand the case to the limit. This is a factor that hinders the compactification that should be made.

【0004】また例えば光源の交換を容易化する目的
で,光源をリフレクターに一体化した光源ユニットを用
いて,これを着脱自在のものとするようにエッジライト
パネルとケース間で,ケースに対してスライド装着する
ものとした場合には,光源ユニットのスライド装着や交
換のための脱着時にリード線が摩擦等による反スライド
方向の外力を受けるために,光源から外れたりすること
が予想され,従ってこの場合は光源ユニット化を阻害す
る要因となる。
For the purpose of facilitating the replacement of the light source, for example, a light source unit in which the light source is integrated with a reflector is used. In the case where the light source unit is mounted on a slide, it is expected that the lead wire may come off from the light source due to external force in the anti-sliding direction due to friction when the light source unit is mounted or removed for replacement. In this case, it becomes a factor that hinders the light source unit.

【0005】更に液晶バックライトは,常により高輝度
化を求められる一方,用途によってはこれを厚肉化する
ことによって実現すべきものとされるところ,市販のパ
ネルを用いたものにあっては,所望の肉厚のエッジライ
トパネルが得られないことがある。
Further, while a liquid crystal backlight is always required to have higher brightness, it should be realized by increasing the thickness depending on the application. In the case of using a commercially available panel, An edge light panel having a desired wall thickness may not be obtained.

【0006】本発明はかかる事情に鑑みてなされたもの
で,その解決課題とする処は,更に高輝度化を図るとと
もに上記リード線に起因する問題点を解消した液晶バッ
クライトを提供するにあり,またこれに加えて肉厚の設
定を可及的に任意化した液晶バックライトを提供するに
ある。
The present invention has been made in view of the above circumstances, and a problem to be solved by the invention is to provide a liquid crystal backlight in which the brightness is further increased and the problems caused by the lead wires are eliminated. In addition, in addition to this, there is to provide a liquid crystal backlight whose wall thickness is set as much as possible.

【0007】[0007]

【課題を解決するための手段】上記課題に添って本発明
は,光源を並列一対とすることにより入射光量の増大を
図り,リフレクターをこれに合わせてその反射効率を十
分に確保し得るようにするとともに,この反射効率の確
保と併立して,リード線をリフレクター外側面に収納す
るようにしたものであって,即ち請求項1を,単一又は
積層一対のエッジライトパネルと,該エッジライトパネ
ルの入射端面に対向する並列一対の光源と,該並列一対
の光源に対応して並列する一対の湾曲反射面,該湾曲反
射面間にその光源間スペース方向に向けてV字状に突出
形成したV字反射面及び該V字反射面の外側面にV字状
に凹陥形成して上記並列一対の光源点灯用のリード線を
収納するリード線収納溝を具備したリフレクターとを備
えてなることを特徴とする液晶バックライト,請求項2
を,単一又は積層一対のエッジライトパネルと,該エッ
ジライトパネルの入射端面に対向する並列一対の光源及
び該並列一対の光源を長手方向両端部に一体的に保持す
るリフレクターを具備し,該リフレクターを上記並列一
対の光源に対応して並列する一対の湾曲反射面,該湾曲
反射面間にその光源間スペース方向に向けてV字状に突
出形成したV字反射面及び該V字反射面の外側面にV字
状に凹陥形成し上記並列一対の光源点灯用のリード線を
収納したリード線収納溝を有して形成した光源ユニット
とを備えてなることを特徴とする液晶バックライトと
し,請求項3は,上記に加えて,エッジライトパネルの
厚さを積層一対のものとして肉厚の設定を可及的に任意
化するとともにこの積層を行った場合に出現し易くなる
導光パターンの透けを,照明面側を厚肉化し,背面側を
薄肉化する配置態様によって解消するようにしたもので
あって,即ちこれを,上記エッジライトパネルを,直付
け又は透明フィルムを介して積層し,照明面側を厚肉,
背面側を薄肉とするように異厚とした積層一対のものと
してなることを特徴とする請求項1又は2の液晶バック
ライトとし,これらをそれぞれ発明の要旨として上記課
題解決の手段としたものである。
In order to solve the above problems, the present invention aims to increase the amount of incident light by arranging a pair of light sources in parallel, and to ensure sufficient reflection efficiency by adjusting the reflectors accordingly. At the same time, the lead wire is housed on the outer surface of the reflector in parallel with ensuring the reflection efficiency. That is, the claim 1 is a single or laminated pair of edge light panels and the edge light. A pair of parallel light sources facing the incident end surface of the panel, a pair of curved reflecting surfaces arranged in parallel corresponding to the pair of parallel light sources, and V-shaped projections formed between the curved reflecting surfaces in the space direction between the light sources. And a reflector having a V-shaped recess formed on the outer surface of the V-shaped reflection surface and having a lead wire receiving groove for receiving the pair of parallel light source lighting leads. Special LCD backlight to claim 2
A single or laminated pair of edge light panels, a pair of parallel light sources facing the incident end face of the edge light panel, and reflectors integrally holding the pair of parallel light sources at both longitudinal ends, A pair of curved reflecting surfaces in which reflectors are juxtaposed corresponding to the pair of parallel light sources, a V-shaped reflecting surface formed between the curved reflecting surfaces in a V-shape protruding in the space direction between the light sources, and the V-shaped reflecting surface. And a light source unit having a V-shaped recess on the outer surface of the light source unit, the light source unit having a lead wire accommodating groove accommodating the pair of parallel light source lighting leads. In addition to the above, the light guide pattern according to claim 3, wherein the thickness of the edge light panel is a pair of laminated layers, the thickness of the edge light panel is set as much as possible, and the laminated pattern is likely to appear when the laminated layers are formed. The see-through , The illumination surface side is made thicker, and the back side is made thinner by an arrangement mode, that is, the edge light panel is directly attached or laminated through a transparent film to illuminate Thick side,
The liquid crystal backlight according to claim 1 or 2, wherein the back surface side is a laminated pair having different thicknesses so that the back surface side is thin, and these are the means for solving the above problems as the gist of the invention. is there.

【0008】[0008]

【発明の実施の形態】以下図面に従って本発明を更に具
体的に説明すれば,1は,ケース30に収納することに
よってユニットとした液晶バックライト,2はエッジラ
イトパネル,4は反射シート,5は拡散シート,10は
光源ユニットを示し,このとき本例においてエッジライ
トパネル2は,直付けして積層し,照明面側を厚肉,背
面側を薄肉とするように異厚とした積層一対のものと
し,光源ユニット10は,該エッジライトパネル2の入
射端面3に対向する並列一対の光源11及び該並列一対
の光源11を長手方向両端部に一体的に保持するリフレ
クター14とを具備し,該リフレクター14を上記並列
一対の光源11に対応して並列する一対の湾曲反射面1
6,該湾曲反射面16間にその光源11間スペース方向
に向けて突出形成したV字反射面17及び該V字反射面
17のそ外側面にV字状に凹陥形成し上記並列一対の光
源点灯用のリード線12を収納したリード線収納溝18
を有して形成したものとしてある。
BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in more detail with reference to the drawings. 1 is a liquid crystal backlight unitized by being housed in a case 30, 2 is an edge light panel, 4 is a reflection sheet, and 5 is a reflection sheet. Is a diffusion sheet, and 10 is a light source unit. In this case, the edge light panel 2 is directly attached and laminated in this example, and the illumination surface side is thick and the back side is thin. The light source unit 10 includes a pair of parallel light sources 11 facing the incident end surface 3 of the edge light panel 2 and a reflector 14 integrally holding the pair of parallel light sources 11 at both ends in the longitudinal direction. , A pair of curved reflecting surfaces 1 in which the reflectors 14 are arranged in parallel corresponding to the pair of parallel light sources 11.
6, a V-shaped reflecting surface 17 formed between the curved reflecting surfaces 16 so as to project toward the space direction between the light sources 11, and a V-shaped concave portion formed on the outer surface of the V-shaped reflecting surface 17 to form a pair of parallel light sources. Lead wire housing groove 18 housing the lead wire 12 for lighting
Is formed.

【0009】即ち本例において積層一対のエッジライト
パネル2は,平面矩形のアクリル透明パネルに,それぞ
れ裏面の図示省略の導光パターンをスクリーン印刷によ
って印刷形成したものを用い,このときアクリル透明パ
ネルは,市販の3mm厚と5mm厚の異厚のものを用いて,
導光パターンを各裏面に位置するように,直接に面接す
ることによって直付けして積層し,合計で8mm厚のもの
としてあり,このとき積層は厚肉の5mm厚のものを照明
面側,薄肉の3mm厚のものを背面側にして行うものと
し,これにより薄肉のものを照明面側に,厚肉のものを
背面側に積層した場合に見られることがある上記導光パ
ターンの透けを防止することができるものとしてある。
従って積層一対のエッジライトパネル2は,それぞれ入
射光の反射サイクルを比較的大きく確保する数mm程度厚
の導光性の良好なものを用いて,市販で得られない厚さ
を確保する一方,導光パターンの透けを防止するように
したものとしてある。
That is, in this embodiment, the pair of edge light panels 2 used is a flat rectangular acrylic transparent panel on which a light guide pattern (not shown) on the back surface is printed by screen printing. At this time, the acrylic transparent panel is , By using commercially available 3 mm and 5 mm different thickness,
The light guide patterns are directly attached to each other by direct contact so that they are located on each back surface, and are directly attached and laminated, and the total thickness is 8 mm. It is assumed that the thin-walled 3 mm thick one is placed on the back side, so that the light-guiding pattern can be seen through when the thin-walled one is laminated on the illumination surface side and the thick one is laminated on the back surface side. It is something that can be prevented.
Therefore, the pair of edge light panels 2 having a laminated structure, each of which has a light guiding property of several millimeters, which has a relatively large reflection cycle of incident light and has a good light guiding property, has a thickness not obtained on the market. It is intended to prevent the see-through of the light guide pattern.

【0010】積層一対のエッジライトパネル2は,その
非照明面側の背面側に一方のエッジライトパネル2にお
ける上記導光パターンに面接するように高反射性白色系
ポリエステルシートによる反射シート4を,照明面側に
光拡散性半透明乳白色系ポリエステルシートによる拡散
シート5を,それぞれ配設して,その外周端部において
細幅の接着手段によって固定するとともに入射端面3以
外の端面に反射テープ6を接着固定して,積層の状態を
維持しその位置ズレ等を防止する一体化したものとして
ある。
The edge light panel 2 of the laminated pair has a reflection sheet 4 made of a highly reflective white polyester sheet on the back side of the non-illuminated surface side so as to come into contact with the light guide pattern of the one edge light panel 2. Diffusing sheets 5 made of a light-diffusing semi-transparent milky white polyester sheet are respectively arranged on the illumination surface side, and fixed at the outer peripheral ends thereof by a narrow adhesive means, and at the end faces other than the incident end face 3 a reflecting tape 6 is attached. It is integrated and fixed by adhesion to maintain the laminated state and prevent misalignment.

【0011】光源ユニット10の光源11は,例えば
2.3mm又はそれ以下の径にしてエッジライトパネル2
の入射端面3長さに合わせた長尺細径の冷陰極蛍光灯を
一対用いて,各エッジライトパネル2の入射端面3にそ
れぞれ対向して並列したものとするとともにリフレクタ
ー14の両端部に設置したソケット19によりこれに保
持して一体化したものとする一方,リフレクター14
は,並列一対の光源11を覆う,銀蒸着フィルムとその
べースをなすリフレクターべースとによって形成し,銀
蒸着フィルムの蒸着面により光源対向面全面を反射面と
する一方,リフレクターべースの形状により上記湾曲反
射面16,V字反射面17及びリード線収納溝18を備
えたものとしてある。
The light source 11 of the light source unit 10 has a diameter of, for example, 2.3 mm or less, and the edge light panel 2 is used.
A pair of long and thin cold-cathode fluorescent lamps that match the length of the incident end face 3 of the edge light panel 2 are used so as to face the incident end face 3 of each edge light panel 2 in parallel and to be installed at both ends of the reflector 14. While being held by the socket 19 and integrated into one, the reflector 14
Is formed by a silver vapor-deposited film and a reflector base that forms a base thereof, which covers a pair of parallel light sources 11. The vapor-deposited surface of the silver vapor-deposited film makes the entire surface facing the light source a reflective surface, while the reflector base is formed. The curved reflecting surface 16, the V-shaped reflecting surface 17 and the lead wire accommodating groove 18 are provided depending on the shape of the groove.

【0012】本例のリフレクター14は,銀蒸着フィル
ムを,例えば真鍮,鋼,アルミ等の金属製のリフレクタ
ーべースに接着した後,リフレクターべースの後加工の
成型を行うことによってこれを形成してあり,このとき
銀蒸着フィルムを内側に向けるように断面M字状を呈す
るものとし,その反射面を対向する一対の対向反射面1
5,上記一対の湾曲反射面16及びV字反射面17を連
続的に備えたものとしてあり,一方リード線収納溝18
は上記成型によりV字反射面17を形成することによっ
て,その外側面に凹陥形成されるV字溝をそのまま用い
ることによってこれを形成したものとしてある。
The reflector 14 of this embodiment is formed by adhering a silver vapor-deposited film to a reflector base made of metal such as brass, steel or aluminum, and then performing post-processing molding of the reflector base. The silver vapor-deposited film has an M-shaped cross section so that the silver vapor-deposited film faces inward.
5. The pair of curved reflecting surfaces 16 and the V-shaped reflecting surface 17 are continuously provided, while the lead wire receiving groove 18 is provided.
Is formed by forming the V-shaped reflecting surface 17 by the above-described molding and using the V-shaped groove formed on the outer surface thereof as it is.

【0013】このとき本例にあってV字反射面17とリ
ード線収納溝18とは表裏の関係をなすために,反射と
リード線12の収納の双方を満足に行うように,位置と
傾斜角度を反射の面から,溝深さをリード線収納の面か
ら設定したものとし,本例はV字反射面17を240°
(リード線収納溝18で120°)とする一方,溝深さ
をリード線12の径に合わせた1.2mmとなるようにし
たものとしてあり,リード線収納溝18には,本例にお
いて各光源11用2本のリード線12を単一本になるよ
うに被覆した状態で,外側に突出することなく,可及的
にリフレクター14の外側面と面一とするように収納し
たものとし,このときリード線12はその繞み等によっ
てこれがリード線収納溝18外に食み出すのを防止する
ように,必要に応じてリフレクター14の外側面の頂部
間に薄肉にして長手方向全長又は部分的な接着テープ2
0を配設して,リード線12の固定を行うようにするも
のとしてある。
At this time, in this embodiment, since the V-shaped reflecting surface 17 and the lead wire accommodating groove 18 have a front and back relationship, the position and the inclination are adjusted so that both the reflection and the lead wire 12 can be accommodated satisfactorily. It is assumed that the angle is set from the reflection surface and the groove depth is set from the lead wire storage surface. In this example, the V-shaped reflection surface 17 is set to 240 °.
(120 ° in the lead wire storage groove 18), while the groove depth is set to 1.2 mm which matches the diameter of the lead wire 12, the lead wire storage groove 18 is It is assumed that the two lead wires 12 for the light source 11 are covered so as to be a single wire, and are housed so as to be flush with the outer surface of the reflector 14 as much as possible without protruding outward. At this time, the lead wire 12 may be thinned between the tops of the outer surfaces of the reflectors 14 as necessary to prevent the lead wire 12 from protruding out of the lead wire storage groove 18 due to the bending of the lead wire 12 or the entire length in the longitudinal direction or a part thereof. Adhesive tape 2
0 is arranged so that the lead wire 12 is fixed.

【0014】このエッジライトパネル2とその入射端面
3側の光源ユニット10とを備えた液晶バックライト1
は,合成樹脂製のケース30に収納セットしてバックラ
イトユニットAとして用いられるものとされるが,この
とき上記光源ユニット10は,その交換をなし得るよう
にエッジライトパネル2に対して着脱自在としてあり,
本例にあってこの光源ユニット10の着脱自在化は,ケ
ース30の両端部に配設した光源挿入部33に光源ユニ
ット10をその長手方向一側端からスライド装着するこ
とによって可能としたものとしてある。
A liquid crystal backlight 1 including the edge light panel 2 and a light source unit 10 on the incident end face 3 side thereof.
Is set in a case 30 made of synthetic resin and used as the backlight unit A. At this time, the light source unit 10 is detachable from the edge light panel 2 so that the light source unit 10 can be replaced. As
In this example, the light source unit 10 can be detachably attached by making the light source unit 10 slidably attached to the light source insertion portions 33 arranged at both ends of the case 30 from one end in the longitudinal direction. is there.

【0015】即ちケース30は,エッジライトパネル2
の入射端面3側に開口した断面コ字溝による光源挿入部
33を,該ケース30の形成によってエッジライトパネ
ル2の入射端面3に合わせた両端部に配設する一方,ケ
ース30外に設置する電源側の長手方向一側端を開放し
て挿入口とし,該挿入口から光源ユニット10を光源挿
入部33内にスライド装着するものとしてあり,またこ
のスライド装着によって,光源ユニット10のリフレク
ター14先端が積層一対のエッジライトパネル2の入射
端面3端部を飲み込み状に受入れるように,反射シート
4及び拡散シート5外側からこれにスライド嵌合して,
エッジライトパネル2の入射端面3に対して並列一対の
光源11が定位置となるようにしてある。
That is, the case 30 is the edge light panel 2
The light source insertion portion 33 having a U-shaped cross-section opening to the incident end face 3 side is provided at both ends of the edge light panel 2 aligned with the incident end face 3 by the formation of the case 30, and is installed outside the case 30. One end in the longitudinal direction on the power source side is opened as an insertion port, and the light source unit 10 is slidably mounted in the light source insertion portion 33 from the insertion port. Further, by this sliding mounting, the tip of the reflector 14 of the light source unit 10 is mounted. Is slidably fitted from the outside of the reflection sheet 4 and the diffusion sheet 5 so that the incident end surfaces 3 of the pair of edge light panels 2 can be swallowed.
The pair of light sources 11 arranged in parallel to the incident end face 3 of the edge light panel 2 are arranged at fixed positions.

【0016】従って本例にあっては,並列一対の光源1
1が,背面照明のために増大した充分な入射光量を供給
する一方,この並列一対の光源11に対して一対の対向
反射面15,一対の湾曲反射面16及びV字反射面17
によるリフレクター14の反射面が,特に後2者の反射
面によって光を無方向的に拡散し,ロスなく効率的にエ
ッジライトパネル2の入射端面3に供給することがで
き,リフレクター14が高い反射性能を確保するととも
にこの反射性能の確保と併立して,これを損うことな
く,上記並列一対の光源11点灯用のリード線12をリ
フレクター14外側面のリード線収納溝18内に収納し
て,リード線12が存在することによるトラブルを解消
し,ケース30に対して液晶バックライト1を可及的コ
ンパクトに納まりよく収納して極限的なコンパクト化を
行うことが可能となり,更に本例にあっては積層一対の
エッジライトパネル2が,それぞれその肉厚によって比
較的サイクルの長い反射を行うことになって,良好な導
光性を確保するとともに導光パターンの透けを防止し
て,高輝度高均一な背面照明を行うことが可能となり,
更に市販のパネルを用いたスクリーン印刷によって導光
パターンを印刷形成するに際して所望の肉厚を組合せに
よって得ることが可能となる。
Therefore, in this example, a pair of parallel light sources 1
1 supplies a sufficient amount of incident light increased for back lighting, while a pair of opposed reflecting surfaces 15, a pair of curved reflecting surfaces 16 and a V-shaped reflecting surface 17 are provided for the parallel pair of light sources 11.
The reflecting surface of the reflector 14 according to the above method diffuses light non-directionally by the latter two reflecting surfaces, and can efficiently supply the light to the incident end surface 3 of the edge light panel 2 without loss, and the reflector 14 has high reflection. In addition to ensuring the performance and ensuring the reflection performance, the lead wires 12 for lighting the pair of parallel light sources 11 are housed in the lead wire housing groove 18 on the outer surface of the reflector 14 without impairing the performance. , The trouble caused by the presence of the lead wire 12 is eliminated, and the liquid crystal backlight 1 can be housed in the case 30 as compactly as possible and can be housed well to achieve the ultimate compactness. In that case, the pair of edge light panels 2 that are laminated perform reflection with a relatively long cycle due to the thicknesses of the respective edge light panels 2, thereby ensuring good light guiding properties. Transparent and prevents the light guide pattern, it is possible to perform high-luminance high uniform backlighting,
Further, it is possible to obtain a desired thickness by combining the desired thicknesses when the light guide pattern is printed by screen printing using a commercially available panel.

【0017】なお図中13はコネクター,21はリフレ
クター14の長手方向一側端に設けたケース30へのネ
ジ固定用フイン,22は光源11を長手方向中間で保持
するスペーサー,31はケース30における一体成型の
ケース本体,32は該ケース本体31の背面に設置し,
両端部においてケース本体31とともに上記光源挿入部
33を形成する背面カバーをそれぞれ示す。
In the figure, 13 is a connector, 21 is a fin for fixing screws to a case 30 provided at one end of the reflector 14 in the longitudinal direction, 22 is a spacer for holding the light source 11 in the longitudinal direction, and 31 is in the case 30. The integrally molded case body 32 is installed on the back surface of the case body 31,
The back covers that form the light source insertion portion 33 together with the case body 31 at both ends are shown, respectively.

【0018】図示した例は以上のとおりとしたが,本発
明の実施の形態として,上記光源ユニットを用いること
なく,液晶バックライトを単一又は積層一対のエッジラ
イトパネルと,光源とリフレクターとを備えたものとし
て,光源をエッジライトパネルの入射端面に対向する並
列一対とし,リフレクターを,該並列一対の光源に対応
して並列する一対の湾曲反射面,該湾曲反射面間にその
光源間スペース方向に向けてV字状に突出形成したV字
反射面及び該V字反射面の外側面にV字状に凹陥形成し
て上記並列一対の光源点灯用のリード線を収納するリー
ド線収納溝を具備したものとすること,エッジライトパ
ネルに上記積層一対のものに代えて,単一のものを用い
ること,エッジライトパネルを積層一対のものとすると
きプリズムシートその他の透明フィルムを介して積層す
るようにすること,エッジライトパネルを成型のものと
すること,リフレクターを,高反射性の金属材を成型し
たものとし又は上記金属製又は合成樹脂製のリフレクタ
ーべースを用い,その成型後に,貼着,塗装,蒸着等に
よって反射面の形成をするように構成することも可能で
あり,本発明はこれらを含めて,エッジライトパネル,
光源,リフレクター又は光源ユニットの各具体的材質,
形状,構造,これらの関係,これらに対する付加等は,
上記発明の要旨に反しない限り様々に変更することがで
き,以上に具体的に示したものに殊更限定するには及ば
ない。
Although the illustrated example is as described above, as an embodiment of the present invention, an edge light panel having a single or laminated pair of liquid crystal backlights, a light source and a reflector is used without using the light source unit. A pair of curved reflecting surfaces arranged in parallel corresponding to the parallel pair of light sources, and a space between the light sources between the curved reflecting surfaces are provided as a pair of parallel light sources facing the incident end surface of the edge light panel. A V-shaped reflecting surface projecting in a V-shape in the direction and a V-shaped recess formed on the outer surface of the V-shaped reflecting surface to accommodate the pair of parallel light source lighting lead wires. A single sheet is used instead of the above-mentioned laminated pair of edge light panels, and when the edge light panel is of a laminated pair, the prism sheet Other transparent films are laminated, the edge light panel is formed by molding, the reflector is formed by molding a highly reflective metal material, or the above-mentioned metal or synthetic resin reflector. It is also possible to use a base and form the reflection surface by pasting, painting, vapor deposition, etc. after the molding, and the present invention includes these, the edge light panel,
Specific material of light source, reflector or light source unit,
Shape, structure, relationship between these, addition to these, etc.
The present invention can be variously modified without departing from the spirit of the invention, and is not particularly limited to those specifically shown above.

【0019】[0019]

【発明の効果】本発明は以上のとおりに構成したから,
請求項1及び2は,それぞれ並列一対の光源が,背面照
明のために増大した充分な入射光量を供給する一方,こ
の並列一対の光源に対して一対の湾曲反射面及びV字反
射面を具備したリフレクターの反射面が,特にこれらに
よって光を無方向的に拡散し,ロスなく効率的にエッジ
ライトパネルの入射端面に供給することができ,リフレ
クターが高い反射性能を確保するとともにこの反射性能
の確保と併立して,これを損うことなく,上記並列一対
の光源点灯用のリード線をリフレクター外側面のリード
線収納溝内に収納して,リード線が存在することによる
トラブルを解消し,ケースに対して液晶バックライトを
可及的コンパクトに納まりよく収納して極限的なコンパ
クト化を行うことが可能な液晶バックライトを提供する
ことができる。
The present invention is configured as described above.
Claims 1 and 2 respectively provide a pair of parallel light sources with an increased amount of incident light for back lighting, while providing a pair of curved reflecting surfaces and a V-shaped reflecting surface for the pair of parallel light sources. The reflective surface of the reflector can diffuse the light non-directionally by these, and efficiently supply it to the incident end surface of the edge light panel without loss, and the reflector ensures high reflective performance and In parallel with securing, without losing this, the pair of parallel light source lighting wires are housed in the lead wire housing groove on the outer surface of the reflector to eliminate the trouble caused by the existence of the lead wire. It is possible to provide a liquid crystal backlight in which the liquid crystal backlight can be housed as compactly as possible in the case and can be stored as well as can be made extremely compact.

【0020】請求項3は,これに加えて,積層一対のエ
ッジライトパネルが,それぞれその肉厚によって比較的
サイクルの長い反射を行うことになって,良好な導光性
を確保するとともに導光パターンの透けを防止して,高
輝度高均一な背面照明を行うことが可能となり,またエ
ッジライトパネルを,市販のパネルを用いたスクリーン
印刷によって導光パターンを印刷形成したものとする場
合にも,所望の肉厚を組合せによって得ることが可能と
なる。
In addition to the above, according to the third aspect, the pair of laminated edge light panels perform reflection with a relatively long cycle due to their thicknesses, thereby ensuring good light guiding property and guiding light. It is possible to prevent the see-through of the pattern and perform high-intensity and uniform back lighting. Also, when the edge light panel is formed by screen-printing a light-guide pattern by screen printing using a commercially available panel. It is possible to obtain the desired wall thickness by combining them.

【図面の簡単な説明】[Brief description of drawings]

【図1】バックライトユニットの一部切欠正面図FIG. 1 is a partially cutaway front view of a backlight unit.

【図2】バックライトユニットの一部切欠背面図FIG. 2 is a partially cutaway rear view of the backlight unit.

【図3】液晶バックライトの分解斜視図FIG. 3 is an exploded perspective view of a liquid crystal backlight.

【図4】要部を示す拡大断面図FIG. 4 is an enlarged sectional view showing a main part.

【図5】光源ユニットの側面図FIG. 5 is a side view of the light source unit.

【図6】光源ユニットの正面図FIG. 6 is a front view of a light source unit.

【図7】光源ユニットの他方の側面図FIG. 7 is another side view of the light source unit.

【図8】ケースと光源ユニットとの関係を示す平面図FIG. 8 is a plan view showing the relationship between the case and the light source unit.

【符号の説明】[Explanation of symbols]

A バックライトユニット 1 液晶バックライト 2 エッジライトパネル 3 入射端面 10 光源ユニット 11 光 源 14 リフレクター 16 湾曲反射面 17 V字反射面 18 リード線収納溝 A backlight unit 1 liquid crystal backlight 2 edge light panel 3 incident end face 10 light source unit 11 light source 14 reflector 16 curved reflecting surface 17 V-shaped reflecting surface 18 lead wire storage groove

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 単一又は積層一対のエッジライトパネル
と,該エッジライトパネルの入射端面に対向する並列一
対の光源と,該並列一対の光源に対応して並列する一対
の湾曲反射面,該湾曲反射面間にその光源間スペース方
向に向けてV字状に突出形成したV字反射面及び該V字
反射面の外側面にV字状に凹陥形成して上記並列一対の
光源点灯用のリード線を収納するリード線収納溝を具備
したリフレクターとを備えてなることを特徴とする液晶
バックライト。
1. A single or laminated pair of edge light panels, a pair of parallel light sources facing the incident end surface of the edge light panel, and a pair of curved reflecting surfaces arranged in parallel corresponding to the parallel pair of light sources. A V-shaped reflecting surface is formed between the curved reflecting surfaces so as to project in a V-shape toward the space direction between the light sources, and a V-shaped recess is formed on the outer surface of the V-shaped reflecting surface to light the pair of parallel light sources. A liquid crystal backlight comprising: a reflector having a lead wire storage groove for storing a lead wire.
【請求項2】 単一又は積層一対のエッジライトパネル
と,該エッジライトパネルの入射端面に対向する並列一
対の光源及び該並列一対の光源を長手方向両端部に一体
的に保持するリフレクターを具備し,該リフレクターを
上記並列一対の光源に対応して並列する一対の湾曲反射
面,該湾曲反射面間にその光源間スペース方向に向けて
V字状に突出形成したV字反射面及び該V字反射面の外
側面にV字状に凹陥形成し上記並列一対の光源点灯用の
リード線を収納したリード線収納溝を有して形成した光
源ユニットとを備えてなることを特徴とする液晶バック
ライト。
2. A single or laminated pair of edge light panels, a pair of parallel light sources facing the incident end surface of the edge light panel, and reflectors integrally holding the pair of parallel light sources at both ends in the longitudinal direction. A pair of curved reflecting surfaces arranged in parallel corresponding to the pair of parallel light sources, a V-shaped reflecting surface projecting in a V shape between the curved reflecting surfaces in a space direction between the light sources, and the V-shaped reflecting surface. And a light source unit having a V-shaped recess formed on the outer surface of the character reflection surface and having a lead wire storage groove for storing the pair of parallel light source lighting lead wires. Backlight.
【請求項3】 上記エッジライトパネルを,直付け又は
透明フィルムを介して積層し,照明面側を厚肉,背面側
を薄肉とするように異厚とした積層一対のものとしてな
ることを特徴とする請求項1又は2の液晶バックライ
ト。
3. The edge light panel is directly attached or laminated via a transparent film, and is a laminated pair having different thicknesses such that the illumination surface side is thick and the back surface side is thin. The liquid crystal backlight according to claim 1 or 2.
JP8110284A 1996-04-05 1996-04-05 Liquid crystal back light Pending JPH09274185A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8110284A JPH09274185A (en) 1996-04-05 1996-04-05 Liquid crystal back light

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8110284A JPH09274185A (en) 1996-04-05 1996-04-05 Liquid crystal back light

Publications (1)

Publication Number Publication Date
JPH09274185A true JPH09274185A (en) 1997-10-21

Family

ID=14531799

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8110284A Pending JPH09274185A (en) 1996-04-05 1996-04-05 Liquid crystal back light

Country Status (1)

Country Link
JP (1) JPH09274185A (en)

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Publication number Priority date Publication date Assignee Title
JP2000147218A (en) * 1998-11-06 2000-05-26 Hitachi Chem Co Ltd Planar light emitter and planar light emitter unit
JP2001185902A (en) * 1999-12-27 2001-07-06 Murata Mfg Co Ltd Composite high-frequency component and communication device using same
KR100353794B1 (en) * 1998-11-13 2002-09-26 가부시끼가이샤 도시바 A face light source device and a plane display device using the same
US6655810B2 (en) 2000-06-21 2003-12-02 Fujitsu Display Technologies Corporation Lighting unit
JP2004303564A (en) * 2003-03-31 2004-10-28 Fujitsu Display Technologies Corp Lighting system, and display device equipped with it
KR100485010B1 (en) * 1998-02-11 2005-08-05 삼성전자주식회사 LCD Display
KR100551441B1 (en) * 1998-11-13 2006-05-09 삼성전자주식회사 LCD Display
JP2008277286A (en) * 2007-04-25 2008-11-13 Beijing Boe Optoelectronics Technology Co Ltd Backlight module

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100485010B1 (en) * 1998-02-11 2005-08-05 삼성전자주식회사 LCD Display
JP2000147218A (en) * 1998-11-06 2000-05-26 Hitachi Chem Co Ltd Planar light emitter and planar light emitter unit
KR100353794B1 (en) * 1998-11-13 2002-09-26 가부시끼가이샤 도시바 A face light source device and a plane display device using the same
KR100551441B1 (en) * 1998-11-13 2006-05-09 삼성전자주식회사 LCD Display
JP2001185902A (en) * 1999-12-27 2001-07-06 Murata Mfg Co Ltd Composite high-frequency component and communication device using same
US6655810B2 (en) 2000-06-21 2003-12-02 Fujitsu Display Technologies Corporation Lighting unit
US7494259B2 (en) 2000-06-21 2009-02-24 Sharp Kabushiki Kaisha Lighting unit
JP2004303564A (en) * 2003-03-31 2004-10-28 Fujitsu Display Technologies Corp Lighting system, and display device equipped with it
JP4482286B2 (en) * 2003-03-31 2010-06-16 シャープ株式会社 Illumination device and display device including the same
JP2008277286A (en) * 2007-04-25 2008-11-13 Beijing Boe Optoelectronics Technology Co Ltd Backlight module

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