JP2003217520A - Gas discharge lamp and information display system using the same - Google Patents
Gas discharge lamp and information display system using the sameInfo
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- JP2003217520A JP2003217520A JP2002018050A JP2002018050A JP2003217520A JP 2003217520 A JP2003217520 A JP 2003217520A JP 2002018050 A JP2002018050 A JP 2002018050A JP 2002018050 A JP2002018050 A JP 2002018050A JP 2003217520 A JP2003217520 A JP 2003217520A
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- Prior art keywords
- linear
- gas discharge
- discharge lamp
- linear electrode
- lamp according
- Prior art date
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ガス放電ランプ及
びそれを用いた情報表示システムに関するものであっ
て、特に、電極が放電空間に露出しないことを基本的な
特徴とする誘電体バリアーガス放電ランプ、及び、それ
を用いて構成される、例えば室内照明等の一般照明や液
晶ディスプレイの背面光源等の情報表示システムに関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas discharge lamp and an information display system using the same, and more particularly to a dielectric barrier gas discharge whose basic feature is that electrodes are not exposed in a discharge space. The present invention relates to a lamp and an information display system configured using the lamp, such as general lighting such as indoor lighting and a back light source of a liquid crystal display.
【０００２】[0002]
【従来の技術】液晶ディスプレイは、ＣＲＴに代わる薄
型情報表示システムとして、特にパソコン用、携帯電話
用等に利用されている。また最近では、主に動画像を表
示する、所謂、ＴＶ用として普及し始めている。2. Description of the Related Art Liquid crystal displays are used as thin information display systems replacing CRTs, especially for personal computers and mobile phones. Further, recently, it has begun to be popularized for so-called TVs, which mainly display moving images.
【０００３】従来の一般的な背面光源は、直管冷陰極蛍
光灯を画面端に配置し（エッジ型と呼ぶ）、この発光を
導光板で画面全体へ導き、様々な工夫が為された光反射
板によって液晶画面全体に均一な発光を提供している。
しかし近年の大画面液晶ディスプレイの場合には、上記
の画面端に直管冷陰極蛍光灯を配置する構造では液晶画
面の輝度が十分得られないため、画面背面に直接多数の
蛍光灯を並べる直下型と呼ばれるタイプが用いられてい
る。このタイプは蛍光灯の発光分布が直接画面の輝度分
布に反映されるため、従来以上に光反射板、光拡散シー
ト等に工夫が為されている。In a conventional general back light source, a straight tube cold cathode fluorescent lamp is arranged at the edge of the screen (referred to as edge type), and this light emission is guided to the entire screen by a light guide plate. The reflective plate provides uniform light emission over the entire LCD screen.
However, in the case of large-screen LCDs in recent years, the structure in which a straight tube cold cathode fluorescent lamp is placed at the edge of the screen described above does not provide sufficient brightness for the liquid crystal screen, so a large number of fluorescent lamps should be placed directly below the screen. A type called a type is used. In this type, since the light emission distribution of the fluorescent lamp is directly reflected in the brightness distribution of the screen, the light reflecting plate, the light diffusing sheet, etc. have been devised more than ever before.
【０００４】[0004]
【発明が解決しようとする課題】これまで液晶ディスプ
レイの背面光源では、できるだけ画面全体の輝度を均一
に保つような工夫がされてきた。しかし大型ＴＶになる
と、単に均一な発光と言うだけではなく、心地よい映像
を実現するために画面中央部の輝度を高めたい等の、輝
度に所望の分布を持たせたいという要望が生まれてい
る。Up to now, the back light source of the liquid crystal display has been devised so as to keep the brightness of the entire screen as uniform as possible. However, in the case of a large-sized TV, there is a demand not only for uniform light emission, but also for a desired distribution of brightness, such as increasing the brightness in the center of the screen in order to realize a comfortable image.
【０００５】エッジ型方式の背面光源の場合は、導光
板、反射板に工夫することで、液晶ディスプレイ画面中
央の輝度を高めるという要望に応えることができるが、
大型ディスプレイでは画面輝度が不足するため、この方
式は不適当となるという問題がある。一方、直下型背面
光源では、画面輝度は十分に得られるが、画面輝度に分
布を持たせることはエッジ型以上に困難である。何とか
実現したとしても、大掛かりな発光分布修正機能が必要
であると共に、光源利用効率のロスも非常に大きなもの
になってしまう。In the case of an edge type rear light source, it is possible to meet the demand for increasing the brightness at the center of the liquid crystal display screen by devising a light guide plate and a reflection plate.
Since the screen brightness is insufficient for a large display, there is a problem that this method is unsuitable. On the other hand, the direct-type back light source can obtain a sufficient screen brightness, but it is more difficult to provide a screen brightness distribution than the edge type. Even if it is realized somehow, a large-scale light emission distribution correction function is required, and the loss of the light source utilization efficiency becomes very large.
【０００６】本発明は、上記課題を解決するためになさ
れたもので、従来の直管型冷陰極蛍光灯による光源では
実現できなかった、十分な画面輝度と光利用効率のロス
の生じることなく自由な発光強度分布を創り出すことを
両立できる光源として面状発光のガス放電ランプ及びそ
れを用いた情報表示システムを提供することを目的とす
る。The present invention has been made in order to solve the above problems, and does not cause a sufficient screen brightness and loss of light utilization efficiency which cannot be realized by a conventional light source using a straight tube cold cathode fluorescent lamp. An object of the present invention is to provide a planar light-emission gas discharge lamp as a light source that can achieve both free emission intensity distribution and an information display system using the same.
【０００７】[0007]
【課題を解決するための手段】上記課題を解決するため
に本発明は対向する２つの平板を有する扁平状放電容器
と、前記２つの平板のうち一方の平板の内平面上に交互
に且つ略平行に形成され絶縁体で覆われたそれぞれ複数
の線状陰極及び陽極からなる線状電極と、を有し、前記
線状電極を、放電発光強度を高めたい領域の幅を他の部
分より広く、逆に弱めたい領域を狭く形成したことを特
徴とするガス放電ランプとしたものである。なお、陰
極、陽極は、独立した電位操作が可能であることを意味
し、同電位であること、又それぞれの極性が時間と共に
変わる両極性電極であることを制限するものではない。
また以後、線状陰極と陽極を区別せず両方を示す場合は
線状電極と呼ぶ。SUMMARY OF THE INVENTION In order to solve the above problems, the present invention is directed to a flat discharge vessel having two opposing flat plates, and alternately and substantially on the inner plane of one of the two flat plates. A linear electrode composed of a plurality of linear cathodes and anodes each of which is formed in parallel and covered with an insulator, and the width of the region for increasing the discharge emission intensity of the linear electrode is wider than that of other portions. On the contrary, the gas discharge lamp is characterized in that the region to be weakened is formed narrowly. It should be noted that the cathode and the anode mean that the potentials can be independently controlled, and the cathodes and the anodes are not limited to the same potential and the bipolar electrodes whose polarities change with time.
Further, hereinafter, a linear electrode and a positive electrode will be referred to as a linear electrode when both are shown without distinction.
【０００８】これにより、十分な画面輝度と光利用効率
のロスの生じることなく自由な発光強度分布を創り出す
ことを両立できる光源として面状発光のガス放電ランプ
が得られる。As a result, it is possible to obtain a planar light emission gas discharge lamp as a light source capable of satisfying both sufficient screen brightness and free emission intensity distribution without loss of light utilization efficiency.
【０００９】また、本発明は、情報表示するために、可
視光の透過、非透過を制御する画面制御装置の背面に、
光源として上記のガス放電ランプを用いることを特徴と
する情報表示システムである。Further, according to the present invention, in order to display information, a screen control device for controlling transmission and non-transmission of visible light is provided on a back surface of the screen control device.
An information display system characterized by using the above gas discharge lamp as a light source.
【００１０】これにより、所望の輝度分布と高輝度・高
効率を実現した情報表示システムが得られる。As a result, an information display system which realizes a desired luminance distribution and high luminance / high efficiency can be obtained.
【００１１】[0011]
【発明の実施の形態】本発明の請求項１に記載の発明
は、対向する２つの平板を有する扁平状放電容器と、前
記２つの平板のうち一方の平板の内平面上に交互に且つ
略平行に形成され絶縁体で覆われたそれぞれ複数の線状
陰極及び陽極からなる線状電極と、を有し、前記線状電
極を、放電発光強度を高めたい領域の幅を他の部分より
広く、逆に弱めたい領域を狭く形成したことを特徴とす
るガス放電ランプであり、十分な面発光強度で、面中央
部の輝度が最も高く、周辺に向かうに従って発光強度が
低くなるような発光をさせることができるという作用を
有する。BEST MODE FOR CARRYING OUT THE INVENTION The invention according to claim 1 of the present invention is such that a flat discharge vessel having two opposing flat plates and one of the two flat plates are alternately and substantially on the inner plane of one of the flat plates. A linear electrode composed of a plurality of linear cathodes and anodes each of which is formed in parallel and covered with an insulator, and the width of the region for increasing the discharge emission intensity of the linear electrode is wider than that of other portions. On the contrary, the gas discharge lamp is characterized in that the area to be weakened is formed to be narrow, and it emits light with sufficient surface emission intensity, the highest brightness in the center of the surface and the lower emission intensity toward the periphery. It has the effect of being able to.
【００１２】そして請求項２に記載の発明のように、線
状陰極と線状電極とは、それぞれ独立した電位操作が可
能であることを特徴とする請求項１記載のガス放電ラン
プとしてもよい。Further, as in the invention described in claim 2, the linear cathode and the linear electrode can be independently operated in potential, and the gas discharge lamp according to claim 1 may be used. .
【００１３】そして請求項３に記載の発明のように、線
状陰極と線状電極は、それぞれの極性が時間と共に変わ
る両極性電極であることを特徴とする請求項２記載のガ
ス放電ランプであってもよい。According to a third aspect of the present invention, the linear cathode and the linear electrode are bipolar electrodes whose polarities change with time, and the gas discharge lamp according to the second aspect is characterized. It may be.
【００１４】本発明の請求項４に記載の発明は、放電容
器の中心から線状電極に平行な方向の放電容器両端まで
の距離をＸ０、これと直交する方向の容器両端までの距
離をＹ０、ある線状電極の中心線上の位置を（Ｘ、
Ｙ）、（（Ｘ／Ｘ０）2／２＋（Ｙ／Ｙ０）2／２）1/2
の値をＬ（≧Ｌ≧０）、その位置の線状電極幅をＷとし
たとき、Ｌ１＞Ｌ２ならばＷ１≦Ｗ２（Ｌ１、Ｌ２はＬ
に含まれるある値、Ｗ１、Ｗ２はＷに含まれるある値）
の関係を満たすことを特徴とする請求項１から３のいず
れか記載のガス放電ランプであり、面中央を最高強度と
し周辺に向けて滑らかに輝度を低くするという作用を有
する。According to a fourth aspect of the present invention, the distance from the center of the discharge vessel to both ends of the discharge vessel in the direction parallel to the linear electrodes is X0, and the distance to both ends of the vessel in the direction orthogonal thereto is Y0. , The position on the center line of a linear electrode is (X,
Y), ((X / X0 ) 2/2 + (Y / Y0) 2/2) 1/2
Is L (≧ L ≧ 0) and the linear electrode width at that position is W, and if L1> L2, then W1 ≦ W2 (L1 and L2 are L
A certain value contained in, W1 and W2 are certain values contained in W)
The gas discharge lamp according to any one of claims 1 to 3, wherein the center of the surface has the highest intensity and the brightness is smoothly lowered toward the periphery.
【００１５】なお、請求項５に記載の発明のように、複
数の線状陰極及び陽極に於いて、各陰極とこれに隣接す
る各陽極との距離が何れもほぼ等しいことを特徴とする
請求項１から４のいずれか記載のガス放電ランプとする
のがよい。According to a fifth aspect of the present invention, in a plurality of linear cathodes and anodes, the distance between each cathode and each anode adjacent thereto is substantially the same. The gas discharge lamp according to any one of items 1 to 4 is preferable.
【００１６】そして、請求項６に記載の発明のように、
各線状陰極と陽極との距離が５ｍｍ以上１００ｍｍ以下
であることを特徴とする請求項１から５のいずれか記載
のガス放電ランプとするのが好適である。Then, as in the invention described in claim 6,
The gas discharge lamp according to any one of claims 1 to 5, wherein the distance between each linear cathode and the anode is 5 mm or more and 100 mm or less.
【００１７】ここで、請求項７に記載の発明のように、
複数の線状陰極の本数と線状陽極の本数との差が一本で
あることを特徴とする請求項１から９のいずれか記載の
ガス放電ランプをすると、より好適である。Here, as in the invention described in claim 7,
It is more preferable to use the gas discharge lamp according to any one of claims 1 to 9, wherein the difference between the number of linear cathodes and the number of linear anodes is one.
【００１８】また、請求項８に記載の発明のように、少
なくとも部分的には、放電容器の内面に、紫外線励起に
よって可視光を発する蛍光体が形成されていることを特
徴とする請求項１から７のいずれか記載のガス放電ラン
プとするのが好適である。Further, according to the invention described in claim 8, at least partly, a phosphor that emits visible light by ultraviolet excitation is formed on the inner surface of the discharge vessel. It is preferable that the gas discharge lamp according to any one of 1 to 7 is used.
【００１９】本発明の請求項９に記載の発明は、情報表
示するために、可視光の透過、非透過を制御する画面制
御装置の背面に、光源として請求項１から８のいずれか
記載のガス放電ランプを用いることを特徴とする情報表
示システムである。According to a ninth aspect of the present invention, in order to display information, a light source is provided as a light source on the back of a screen control device that controls transmission and non-transmission of visible light. The information display system is characterized by using a gas discharge lamp.
【００２０】そして請求項１０に記載の発明は、画面表
示装置として液晶を用いることを特徴とする請求項９記
載の情報表示システムである。The invention according to claim 10 is the information display system according to claim 9, characterized in that a liquid crystal is used as the screen display device.
【００２１】以下、本発明の実施の形態について、図１
を用いて説明する。FIG. 1 shows an embodiment of the present invention.
Will be explained.
【００２２】なお、本発明は放電容器の材質、形状を限
定するものではないが、現状において最も現実的である
のはガラスによって作られた扁平状（平板状）の放電容
器であるため、以下で説明する実施の形態は、ガラス製
平板状放電容器を用いている。Although the present invention does not limit the material and shape of the discharge vessel, the most practical one is the flat (flat) discharge vessel made of glass. The embodiment described in 1. uses a flat plate discharge vessel made of glass.
【００２３】（実施の形態１）図１は、本実施の形態に
おけるガス放電ランプの電極構成を示す平面図であり、
本発明の最も基本的な概念である複数の線状陰極と線状
陽極の形状、配置を示している。図１において、１は複
数の線状陰極及び線状陽極、２は線状陰極及び陽極１を
覆う誘電体、３は背面板であり、この背面板３は、２つ
の対向した平板すなわち、可視透光性前面板と背面板と
を有する扁平状放電容器を構成する一部である。(Embodiment 1) FIG. 1 is a plan view showing an electrode configuration of a gas discharge lamp according to the present embodiment,
The shape and arrangement of a plurality of linear cathodes and linear anodes, which is the most basic concept of the present invention, are shown. In FIG. 1, 1 is a plurality of linear cathodes and linear anodes, 2 is a dielectric covering the linear cathodes and anodes, 3 is a back plate, and this back plate 3 is two facing flat plates, that is, visible. It is a part of a flat discharge vessel having a translucent front plate and a back plate.
【００２４】線状陰極及び線状陽極１は、誘電体２に覆
われ、放電容器の内外空間には露出していない状態で背
面板３側に形成されている。また、隣接する電極はほぼ
等間隔で配置されている。また以後、線状陰極と陽極を
区別せず両方を示す場合は線状電極と呼ぶ。The linear cathode and the linear anode 1 are formed on the rear plate 3 side while being covered with the dielectric 2 and not exposed to the inner and outer spaces of the discharge vessel. In addition, adjacent electrodes are arranged at substantially equal intervals. Further, hereinafter, a linear electrode and a positive electrode will be referred to as a linear electrode when both are shown without distinction.
【００２５】なお、線状電極は背面板３側への形成を基
本としているが、これに限るものではなく、前面板側に
形成されてもかまわない。Although the linear electrode is basically formed on the rear plate 3 side, the present invention is not limited to this, and the linear electrode may be formed on the front plate side.
【００２６】また、放電容器内には適当なガスが封入さ
れ、放電容器の内平面には蛍光体が塗布されている。Further, an appropriate gas is filled in the discharge container, and a phosphor is applied to the inner plane of the discharge container.
【００２７】また、線状電極については、図１では陰極
５本―陽極５本の場合を図示したが、当然ながらこれに
限るものではなく、もっと多数の場合も同等の効果が得
られる。ただし、陰極と陽極の本数を一本異なる値に設
定した方がより安定した動作が可能であり好ましい。す
なわち、複数の線状陰極の本数をｍ、線状陽極の本数を
ｎとすると、ｍとｎの差が一本異なる、すなわちｍ−ｎ
＝±１となるように設定するのがよい。As for the linear electrodes, the case of five cathodes and five anodes is shown in FIG. 1, but the present invention is not limited to this, and the same effect can be obtained in a larger number of cases. However, it is preferable that the number of cathodes and the number of anodes are set to different values because more stable operation is possible. That is, when the number of the plurality of linear cathodes is m and the number of the linear anodes is n, the difference between m and n is different by one, that is, m−n
It is better to set it so that == 1.
【００２８】また、陰極、陽極は、独立した電位操作が
可能であることを意味し、同電位であること、又それぞ
れの極性が時間と共に変わる両極性電極であることを制
限するものではない。Further, the cathode and the anode mean that the potentials can be independently controlled, and they are not limited to the same potential and the bipolar electrodes whose polarities change with time.
【００２９】線状電極の材質については、Ag、Ni、Al等
の各種金属、透明導電体であるＩＴＯを試したが何れの
場合も本発明を制限するものではなく有効であった。た
だし可視光の均一光源を目指す上では線状電極材にＩＴ
Ｏを用いた方がより好ましい。線状電極の幅、厚さに関
しては、できる限り細い方が好ましいが、細くすると電
気抵抗が高くなる、放電時に十分な輝度が得られない等
の問題が生じる。Regarding the material of the linear electrode, various metals such as Ag, Ni and Al, and ITO which is a transparent conductor were tried, but in any case, the present invention is not limited and effective. However, when aiming for a uniform light source of visible light, IT is used for the linear electrode material.
It is more preferable to use O. With regard to the width and thickness of the linear electrode, it is preferable that the width and thickness are as thin as possible.
【００３０】しかもガスの種類・圧力、電極を覆う誘電
体の性質までも関係してくるため数値を限定することは
難しいが、実施した範囲内では、電極に金属、又はＩＴ
Ｏを用いる場合は、幅０．１ｍｍ〜５ｍｍ、厚さ０．１
μｍ〜１０μｍ程度が利用可能であった。また各線状電
極厚さは全て同一であると制限するものではない。Moreover, it is difficult to limit the numerical value because the type and pressure of gas and the properties of the dielectric covering the electrode are also related, but within the range of the implementation, metal or IT is used for the electrode.
When O is used, the width is 0.1 mm to 5 mm and the thickness is 0.1.
About 10 μm to 10 μm was available. Further, the thickness of each linear electrode is not limited to be the same.
【００３１】次に隣接する線状電極間距離についてであ
るが、高い発光効率を実現するためには距離が離れてい
る方が好ましい。しかし、本発明の面発光ランプの基本
的な機能である全ての線状電極で放電、発光させること
が難しくなる。加えて、高い輝度を実現することも難し
くなる。実施した範囲では電極間距離５ｍｍ〜１００ｍ
ｍが利用可能であった。Next, regarding the distance between the adjacent linear electrodes, it is preferable that the distance is large in order to realize high luminous efficiency. However, it becomes difficult to discharge and emit light with all the linear electrodes, which is the basic function of the surface emitting lamp of the present invention. In addition, it is difficult to realize high brightness. Distance between electrodes is 5 mm to 100 m
m were available.
【００３２】封入されるガスについては、Xe１００％、
Xe３０％−Ar７０％、Ne９０％−Ar１０％、Xe１００％
＋Hg、Xe３０％−Aｒ７０％＋Hg、Ne９０％−Ar１０％
＋Hgの６種類について実施した。例として前記６種類に
ついて実施したが、少なくとも希ガスを含んでいればガ
スの種類を制限するものは特にない。封入ガス圧力に関
しては１０ｔｏｒｒ〜２００ｔｏｒｒ程度が使用可能範
囲であった。Regarding the gas to be enclosed, 100% Xe,
Xe30% -Ar70%, Ne90% -Ar10%, Xe100%
+ Hg, Xe30% -Ar70% + Hg, Ne90% -Ar10%
It carried out about 6 kinds of + Hg. As an example, the above six types were carried out, but there is no particular limitation on the type of gas as long as it contains at least a rare gas. The usable gas pressure range was about 10 torr to 200 torr.
【００３３】次に線状電極が形成されている基板（背面
板）ともう一方の基板（前面板）との距離、即ち、放電
容器の内部高さについてであるが、最低０．３ｍｍ以上
必要で、これを下回ると均一な放電・発光をさせること
ができなかった。また放電ランプの輝度を考慮すると１
０ｍｍ以下程度が利用可能範囲であった。Next, the distance between the substrate on which the linear electrodes are formed (rear plate) and the other substrate (front plate), that is, the internal height of the discharge vessel, is at least 0.3 mm or more. However, below this, uniform discharge and light emission could not be achieved. Considering the brightness of the discharge lamp, 1
The usable range was about 0 mm or less.
【００３４】図１の線状電極は、面光源であるガス放電
ランプの面中央領域の発光強度が最も高く、周辺に向か
うに従って発光強度が低くなるように線状電極幅を設定
したものである。具体的には、各線状電極は中央部分が
太い太鼓型をし、かつ放電容器の端に位置する線状電極
ほど、太鼓型が細くなっている。In the linear electrode of FIG. 1, the linear electrode width is set so that the light emission intensity is highest in the central area of the surface of the gas discharge lamp which is a surface light source, and the light emission intensity decreases toward the periphery. . Specifically, each linear electrode has a drum shape with a thick central portion, and the drum electrode is thinner as it goes to the end of the discharge vessel.
【００３５】以上のような構成によって放電ランプを点
灯させると、面中央部の輝度が最も高く、周辺に向かう
に従って発光強度が低くなるような発光をさせることが
できた。また面発光強度についても面全体が発光する構
成であることから利用するのに十分な高い輝度を得るこ
とが出来た。When the discharge lamp was lit with the above-mentioned structure, it was possible to emit light such that the brightness was highest in the central portion of the surface and the emission intensity became lower toward the periphery. As for the surface emission intensity, it was possible to obtain a sufficiently high brightness for use because the entire surface emits light.
【００３６】即ち、従来の直管型冷陰極蛍光灯による光
源では実現できなかった、十分な面輝度と光利用効率の
ロスを生じることなく自由な発光強度分布を創り出すこ
とを両立できる光源が実現できた。That is, a light source capable of achieving both a sufficient surface brightness and a free emission intensity distribution without loss of light utilization efficiency, which could not be realized by a conventional light source using a straight tube cold cathode fluorescent lamp, is realized. did it.
【００３７】数十種類の輝度分布パターンについて検討
を行ったが、太鼓型の線状電極の太さ、シェイプの程度
を最適に設計することで、如何様な輝度分布を持つ面発
光をも実現することが出来た。Although several tens of types of luminance distribution patterns have been examined, surface emission having any luminance distribution can be realized by optimally designing the thickness and shape of the drum-shaped linear electrode. I was able to do it.
【００３８】特殊なパターンとして、面の周辺部の輝度
を最も高くする、又最も輝度の高い部分を二箇所作る等
のパターンについても実現できた。As a special pattern, it was also possible to realize a pattern in which the brightness of the peripheral portion of the surface is the highest, or two parts having the highest brightness are formed.
【００３９】なお、面中央を最高輝度とし周辺に向けて
滑らかに輝度を低くするのにより好適なパターンとして
は、放電容器の中心から線状電極に平行な方向の放電容
器両端までの距離をＸ０、これと直交する方向の容器両
端までの距離をＹ０、ある線状電極の中心線上の位置を
（Ｘ、Ｙ）、（（Ｘ／Ｘ０）2／２＋（Ｙ／Ｙ０）2／
２）1/2の値をＬ（≧Ｌ≧０）、その位置の線状電極幅
をＷとしたとき、Ｌ１＞Ｌ２ならばＷ１≦Ｗ２（Ｌ１、
Ｌ２はＬに含まれるある値、Ｗ１、Ｗ２はＷに含まれる
ある値）の関係を満たすようにすればよいことも確認し
た。As a more preferable pattern in which the brightness is lowered smoothly toward the periphery with the maximum brightness at the center of the surface, the distance from the center of the discharge container to both ends of the discharge container in the direction parallel to the linear electrodes is X0. , the distance to the direction of the container at both ends perpendicular thereto Y0, the position of the center line of a linear electrode (X, Y), (( X / X0) 2/2 + (Y / Y0) 2 /
2) If the value of 1/2 is L (≧ L ≧ 0) and the linear electrode width at that position is W, and if L1> L2, then W1 ≦ W2 (L1,
It was also confirmed that L2 should satisfy a relationship of a certain value contained in L, and W1 and W2 a certain value contained in W.
【００４０】以上のように本実施の形態によれば、従来
の直管冷陰極蛍光灯を用いて輝度に分布を持たせようと
する際に困難性が大きいのに対し、本発明は自体の発光
をランプとして電極パターンのパターン設計のみで、十
分な面輝度と良好な光利用効率で自由な発光強度分布を
創り出すことができる面状発光のガス放電ランプを実現
することができ、本発明のガス放電ランプは、面発光源
であることと、その輝度分布をランプ自体で制御できる
こととを併せ持つ画期的なものである。As described above, according to the present embodiment, it is difficult to give a luminance distribution by using the conventional straight tube cold cathode fluorescent lamp, but the present invention is itself difficult. By using the light emission as a lamp and only designing the electrode pattern, it is possible to realize a planar light emission gas discharge lamp capable of creating a free light emission intensity distribution with sufficient surface brightness and good light utilization efficiency. The gas discharge lamp is an epoch-making one that has both a surface emission source and the brightness distribution thereof can be controlled by the lamp itself.
【００４１】（実施の形態２）次に本発明のガス放電ラ
ンプを透過型液晶ディスプレイの背面光源として用いた
場合について説明する。面中央部の輝度が最も高く、周
辺に向かうに従って発光強度が低くなるように設定した
本発明のガス放電ランプを透過型液晶ディスプレイの背
面光源としてセットし、液晶ディスプレイ画面の輝度分
布を評価した。(Second Embodiment) Next, a case where the gas discharge lamp of the present invention is used as a back light source of a transmissive liquid crystal display will be described. The brightness of the liquid crystal display screen was evaluated by setting the gas discharge lamp of the present invention, which was set to have the highest brightness in the central part of the surface and the lower the light emission intensity toward the periphery, as the back light source of the transmissive liquid crystal display.
【００４２】ディスプレイ画面の輝度分布はガス放電ラ
ンプの輝度分布を直接反映し、画面中央部分が高輝度に
なる設計を実現できた。また大掛かりな発光分布修正機
能を持つ部品を使うことなく実現できるため、高効率で
高輝度という条件を満たした上で実現することが出来
た。The brightness distribution of the display screen directly reflects the brightness distribution of the gas discharge lamp, and a design in which the central portion of the screen has high brightness can be realized. Moreover, since it can be realized without using a component having a large-scale light emission distribution correction function, it was possible to achieve it while satisfying the conditions of high efficiency and high brightness.
【００４３】以上の結果から、本発明の実施の形態によ
る情報表示システム、例えば液晶表示システムによれ
ば、所望の輝度分布と高輝度・低消費電力（高効率）と
を両立することが可能であるという有利な効果が得られ
る。From the above results, according to the information display system according to the embodiment of the present invention, for example, the liquid crystal display system, it is possible to achieve both desired luminance distribution and high luminance / low power consumption (high efficiency). The advantageous effect that there is is obtained.
【００４４】[0044]
【発明の効果】以上のように本発明によれば、従来の直
管型冷陰極蛍光灯による光源では実現できなかった、十
分な画面輝度と光利用効率のロスの生じることなく自由
な発光強度分布を創り出すことを同時に提供できるとい
う画期的な効果をもたらす。As described above, according to the present invention, a free light emission intensity can be obtained without causing a sufficient screen brightness and loss of light utilization efficiency which cannot be realized by a conventional light source using a straight tube cold cathode fluorescent lamp. It has the epoch-making effect of being able to simultaneously provide the creation of distribution.
【図１】本発明の一実施の形態におけるガス放電ランプ
の電極形状・配置を示す平面図FIG. 1 is a plan view showing the shape and arrangement of electrodes of a gas discharge lamp according to an embodiment of the present invention.
１ 線状電極（陰極及び陽極） ２ 誘電体 ３ 背面板 1 Linear electrodes (cathode and anode) 2 dielectric 3 back plate
───────────────────────────────────────────────────── フロントページの続き (72)発明者 今村 浩子 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 (72)発明者 桑田 純 大阪府門真市大字門真1006番地 松下電器 産業株式会社内 Ｆターム(参考） 2H091 FA41Z LA18 5G435 AA03 BB12 BB15 EE26 EE29 GG25 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Hiroko Imamura 1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric Sangyo Co., Ltd. (72) Inventor Jun Kuwata 1006 Kadoma, Kadoma-shi, Osaka Matsushita Electric Sangyo Co., Ltd. F-term (reference) 2H091 FA41Z LA18 5G435 AA03 BB12 BB15 EE26 EE29 GG25
Claims (10)
容器と、前記２つの平板のうち一方の平板の内平面上に
交互に且つ略平行に形成され絶縁体で覆われたそれぞれ
複数の線状陰極及び陽極からなる線状電極と、を有し、
前記線状電極を、放電発光強度を高めたい領域の幅を他
の部分より広く、逆に弱めたい領域を狭く形成したこと
を特徴とするガス放電ランプ。1. A flat discharge vessel having two flat plates facing each other, and a plurality of wires formed alternately and substantially parallel to each other on an inner plane of one of the two flat plates and covered with an insulator. A linear electrode including a cathode and an anode,
A gas discharge lamp, characterized in that the linear electrode is formed such that the width of a region where the discharge emission intensity is desired to be increased is wider than that of the other part and conversely the region where the discharge emission intensity is desired to be weakened is narrowed.
した電位操作が可能であることを特徴とする請求項１記
載のガス放電ランプ。2. The gas discharge lamp according to claim 1, wherein the linear cathode and the linear electrode can be independently operated for potential.
が時間と共に変わる両極性電極であることを特徴とする
請求項２記載のガス放電ランプ。3. The gas discharge lamp according to claim 2, wherein the linear cathode and the linear electrode are bipolar electrodes whose polarities change with time.
向の放電容器両端までの距離をＸ０、これと直交する方
向の容器両端までの距離をＹ０、ある線状電極の中心線
上の位置を（Ｘ、Ｙ）、（（Ｘ／Ｘ０）2／２＋（Ｙ／
Ｙ０）2／２）1/ 2の値をＬ（≧Ｌ≧０）、その位置の線
状電極幅をＷとしたとき、Ｌ１＞Ｌ２ならばＷ１≦Ｗ２
（Ｌ１、Ｌ２はＬに含まれるある値、Ｗ１、Ｗ２はＷに
含まれるある値）の関係を満たすことを特徴とする請求
項１から３のいずれか記載のガス放電ランプ。4. A position on the center line of a certain linear electrode, where X0 is the distance from the center of the discharge container to both ends of the discharge container in the direction parallel to the linear electrode, and Y0 is the distance to both ends of the container in the direction orthogonal thereto. the (X, Y), (( X / X0) 2/2 + (Y /
Y0) 2/2) 1/ 2 of the value L (≧ L ≧ 0), when the linear electrode width of that position was W, L1> L2 if W1 ≦ W2
The gas discharge lamp according to any one of claims 1 to 3, wherein a relationship of (L1 and L2 are certain values included in L and W1 and W2 are certain values included in W) is satisfied.
極とこれに隣接する各陽極との距離が何れもほぼ等しい
ことを特徴とする請求項１から４のいずれか記載のガス
放電ランプ。5. The gas discharge according to claim 1, wherein in the plurality of linear cathodes and anodes, the distance between each cathode and each anode adjacent thereto is substantially the same. lamp.
１００ｍｍ以下であることを特徴とする請求項１から５
のいずれか記載のガス放電ランプ。6. The distance between each linear cathode and the anode is not less than 5 mm and not more than 100 mm.
A gas discharge lamp according to any one of 1.
との差が一本であることを特徴とする請求項１から９の
いずれか記載のガス放電ランプ。7. The gas discharge lamp according to claim 1, wherein the difference between the number of linear cathodes and the number of linear anodes is one.
に、紫外線励起によって可視光を発する蛍光体が形成さ
れていることを特徴とする請求項１から７のいずれか記
載のガス放電ランプ。8. The gas discharge lamp according to claim 1, wherein a phosphor that emits visible light when excited by ultraviolet rays is formed at least partially on the inner surface of the discharge vessel.
透過を制御する画面制御装置の背面に、光源として請求
項１から８のいずれか記載のガス放電ランプを用いるこ
とを特徴とする情報表示システム。9. A gas discharge lamp according to any one of claims 1 to 8 is used as a light source on the back surface of a screen control device for controlling transmission and non-transmission of visible light for displaying information. Information display system.
を特徴とする請求項９記載の情報表示システム。10. The information display system according to claim 9, wherein a liquid crystal is used as the screen display device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002018050A JP2003217520A (en) | 2002-01-28 | 2002-01-28 | Gas discharge lamp and information display system using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002018050A JP2003217520A (en) | 2002-01-28 | 2002-01-28 | Gas discharge lamp and information display system using the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003217520A true JP2003217520A (en) | 2003-07-31 |
Family
ID=27653528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002018050A Pending JP2003217520A (en) | 2002-01-28 | 2002-01-28 | Gas discharge lamp and information display system using the same |
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| Country | Link |
|---|---|
| JP (1) | JP2003217520A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005222714A (en) * | 2004-02-03 | 2005-08-18 | Japan Storage Battery Co Ltd | Dielectric barrier discharge lamp and dielectric barrier discharge device |
| KR100537023B1 (en) * | 2004-02-20 | 2005-12-16 | 주식회사 엘에스텍 | Flat fluorescent lamp and back-light unit utilizing flat fluorescent lamp |
| KR100626047B1 (en) | 2004-12-07 | 2006-09-21 | 삼성에스디아이 주식회사 | Flat type lamp |
| WO2006115378A1 (en) * | 2005-04-26 | 2006-11-02 | Youyang Airport Lighting Equipment Inc. | Flat fluorescent lamp and electrode structure thereof |
| WO2007037602A1 (en) * | 2005-09-28 | 2007-04-05 | Samsung Corning Co., Ltd. | Plate for surface light source, surface light source and backlight unit having the same |
| KR100756362B1 (en) * | 2005-07-19 | 2007-09-10 | 삼성코닝 주식회사 | Surface light source device and back light unit having the surface light source device |
| JP2010219073A (en) * | 2010-07-08 | 2010-09-30 | Gs Yuasa Corp | Dielectric barrier discharge lamp, and dielectric barrier discharge device |
| KR101094771B1 (en) | 2004-06-30 | 2011-12-16 | 엘지디스플레이 주식회사 | Structure of alignment of backlight in direct type liquid crystal display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005222714A (en) * | 2004-02-03 | 2005-08-18 | Japan Storage Battery Co Ltd | Dielectric barrier discharge lamp and dielectric barrier discharge device |
| WO2005076315A1 (en) * | 2004-02-03 | 2005-08-18 | Gs Yuasa Corporation | Dielectric barrier discharge lamp, dielectric barrier discharge device, and method for using those |
| KR100537023B1 (en) * | 2004-02-20 | 2005-12-16 | 주식회사 엘에스텍 | Flat fluorescent lamp and back-light unit utilizing flat fluorescent lamp |
| KR101094771B1 (en) | 2004-06-30 | 2011-12-16 | 엘지디스플레이 주식회사 | Structure of alignment of backlight in direct type liquid crystal display device |
| KR100626047B1 (en) | 2004-12-07 | 2006-09-21 | 삼성에스디아이 주식회사 | Flat type lamp |
| WO2006115378A1 (en) * | 2005-04-26 | 2006-11-02 | Youyang Airport Lighting Equipment Inc. | Flat fluorescent lamp and electrode structure thereof |
| KR100715377B1 (en) * | 2005-04-26 | 2007-05-07 | 유양산전 주식회사 | Electrode structure for a flat fluorescent lamp |
| JP2008538853A (en) * | 2005-04-26 | 2008-11-06 | ユヤン エアポート ライティング イクウィプメント インコーポレーション | Flat fluorescent lamp and electrode structure of the fluorescent lamp |
| KR100756362B1 (en) * | 2005-07-19 | 2007-09-10 | 삼성코닝 주식회사 | Surface light source device and back light unit having the surface light source device |
| WO2007037602A1 (en) * | 2005-09-28 | 2007-04-05 | Samsung Corning Co., Ltd. | Plate for surface light source, surface light source and backlight unit having the same |
| JP2010219073A (en) * | 2010-07-08 | 2010-09-30 | Gs Yuasa Corp | Dielectric barrier discharge lamp, and dielectric barrier discharge device |
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