JPH10222083A - Flat board type source of light and liquid crystal display thereof - Google Patents
Flat board type source of light and liquid crystal display thereofInfo
- Publication number
- JPH10222083A JPH10222083A JP9021269A JP2126997A JPH10222083A JP H10222083 A JPH10222083 A JP H10222083A JP 9021269 A JP9021269 A JP 9021269A JP 2126997 A JP2126997 A JP 2126997A JP H10222083 A JPH10222083 A JP H10222083A
- Authority
- JP
- Japan
- Prior art keywords
- light source
- discharge
- front plate
- flat light
- discharge electrode
- 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
- Liquid Crystal (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明はバックライトが必要
な液晶表示装置等の表示素子を使用するテレビ、ゲーム
機、カーナビゲーションシステム等の情報映像機器、ワ
ープロ等のOA機器、光源を内蔵した表示システム等に
使用され、平面状に発光する平板型光源および液晶表示
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 television, a game machine, an information video equipment such as a car navigation system, an OA equipment such as a word processor, and a display incorporating a light source using a display element such as a liquid crystal display device requiring a backlight. The present invention relates to a flat light source and a liquid crystal display device which are used in a system or the like and emit light in a plane.
【0002】[0002]
【従来の技術】液晶表示装置は薄型軽量で低消費電力の
ため、パソコン、テレビ等各種の情報映像ディスプレイ
として広く利用されているが、液晶自体は発光素子でな
く、表示のためには液晶パネルの背面から光を供給する
バックライトが必要である。このバックライトとして
は、細径の蛍光ランプとアクリル樹脂の導光体とを組み
合わせたものが主として用いられているが、平板型放電
灯も使用されている。2. Description of the Related Art Liquid crystal display devices are widely used for various information and image displays such as personal computers and televisions because of their thinness, lightness, and low power consumption. A backlight that supplies light from the back of the camera is required. As the backlight, a combination of a small-diameter fluorescent lamp and an acrylic resin light guide is mainly used, but a flat discharge lamp is also used.
【0003】図5は例えば特開平3−225743号公
報に記載されている従来の平板型希ガス放電灯を示す断
面図である。図に示すように、発光面となる透光性を有
する前面板10と絶縁基板20と側板50とは低融点ガ
ラスにより気密封着されて密閉容器が構成され、密閉容
器の内部すなわち放電空間30にはキセノンガスを主成
分とする希ガスが封入されている。また、前面板10と
絶縁基板20との間には均一な小径のガラスビーズから
なるスペーサ40が分散して配置され、前面板10およ
び絶縁基板20の内面には蛍光体60が塗布され、前面
板10、絶縁基板20の外表面には透明電極70、金属
膜電極80がそれぞれ形成されている。FIG. 5 is a sectional view showing a conventional flat rare gas discharge lamp described in, for example, JP-A-3-225743. As shown in the figure, a front plate 10 having a light-transmitting property, a light-transmitting front plate 10, an insulating substrate 20, and a side plate 50 are hermetically sealed with low-melting glass to form a sealed container. Is filled with a rare gas mainly composed of xenon gas. Further, spacers 40 made of uniform small-diameter glass beads are dispersedly arranged between the front plate 10 and the insulating substrate 20, and the inner surface of the front plate 10 and the insulating substrate 20 is coated with a phosphor 60. A transparent electrode 70 and a metal film electrode 80 are formed on the outer surfaces of the face plate 10 and the insulating substrate 20, respectively.
【0004】この平板型希ガス放電灯においては、透明
電極70と金属膜電極80と間に高周波電圧を印加する
と、放電空間30内に希ガスの放電が発生し、これによ
り蛍光体60が励起されて発光し、光が透明電極70を
通して放射される。In this flat-type rare gas discharge lamp, when a high-frequency voltage is applied between the transparent electrode 70 and the metal film electrode 80, a rare gas discharge is generated in the discharge space 30, thereby exciting the phosphor 60. Then, light is emitted, and light is emitted through the transparent electrode 70.
【0005】[0005]
【発明が解決しようとする課題】この平板型希ガス放電
灯は、前面板10、絶縁基板20のほぼ全外表面に透明
電極70、金属膜電極80を設けてあり、前面板10、
絶縁基板20の反対側の表面に蛍光体60が塗布されて
いる。このため、放電時にイオン等の荷電粒子が蛍光体
60に衝突するから、蛍光体60が劣化して輝度の低下
が激しく、寿命が短いという問題があった。また、対向
した透明電極70、金属膜電極80間で放電を発生させ
るから、放電のモードは負グローだけが生ずるので、発
光効率が悪く、消費電力が大きいという問題もあった。
さらに、感電防止等のため透明電極70、金属膜電極8
0の表面を絶縁する必要があるが、透明電極70、金属
膜電極80が放電灯の表裏両面に形成されており、しか
も透明電極70、金属膜電極80の面積が大きいから、
感電の危険があり、安全上の問題もあった。In this flat type rare gas discharge lamp, a transparent electrode 70 and a metal film electrode 80 are provided on almost all outer surfaces of a front plate 10 and an insulating substrate 20, respectively.
The phosphor 60 is applied to the surface on the opposite side of the insulating substrate 20. For this reason, since charged particles such as ions collide with the phosphor 60 during discharge, the phosphor 60 is deteriorated, the luminance is greatly reduced, and the life is short. In addition, since a discharge is generated between the transparent electrode 70 and the metal film electrode 80 facing each other, only a negative glow occurs in the discharge mode, so that the luminous efficiency is poor and the power consumption is large.
Further, the transparent electrode 70 and the metal film electrode 8 for preventing electric shock etc.
However, since the transparent electrode 70 and the metal film electrode 80 are formed on both the front and back surfaces of the discharge lamp and the area of the transparent electrode 70 and the metal film electrode 80 is large,
There was a risk of electric shock and safety issues.
【0006】本発明は上述の課題を解決するためになさ
れたもので、寿命が長く、消費電力が小さく、安全であ
る平板型光源を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has as its object to provide a flat light source having a long life, low power consumption, and safety.
【0007】[0007]
【課題を解決するための手段】この目的を達成するた
め、本発明においては、平板型光源において、発光面と
なる透光性を有する前面板と蛍光体が塗布された絶縁基
板と側板とを組み合わせて密閉容器を構成し、上記密閉
容器の内部に放電ガスを封入し、上記前面板の外面に複
数の放電電極を形成する。In order to achieve this object, according to the present invention, in a flat light source, a transparent front plate serving as a light emitting surface, an insulating substrate coated with a phosphor, and a side plate are provided. A closed container is formed by combining the closed container and the discharge gas is sealed in the closed container, and a plurality of discharge electrodes are formed on the outer surface of the front plate.
【0008】この場合、上記放電電極として金属薄板か
らなるものを用いる。In this case, a discharge electrode made of a thin metal plate is used.
【0009】また、上記放電電極として透明導電膜から
なるものを用いる。The discharge electrode is made of a transparent conductive film.
【0010】また、上記放電電極として、透明導電膜
と、上記透明導電膜の少なくとも一部分に重ねて設けら
れたストライプ状またはメッシュ状の金属導体とからな
るものを用いる。[0010] Further, as the discharge electrode, an electrode composed of a transparent conductive film and a stripe-shaped or mesh-shaped metal conductor provided so as to overlap at least a part of the transparent conductive film is used.
【0011】これらの場合、上記前面板の内表面に保護
層を設ける。In these cases, a protective layer is provided on the inner surface of the front plate.
【0012】これらの場合、上記前面板と上記絶縁基板
との間にスペーサを上記放電電極と交叉する方向に設
け、上記絶縁基板および上記スペーサの表面に上記蛍光
体を塗布する。In these cases, a spacer is provided between the front plate and the insulating substrate in a direction crossing the discharge electrodes, and the phosphor is applied to the surfaces of the insulating substrate and the spacer.
【0013】また、上記側板、上記スペーサの少なくと
も一方を厚膜印刷法を用いて上記絶縁基板上に形成す
る。Further, at least one of the side plate and the spacer is formed on the insulating substrate by using a thick film printing method.
【0014】また、上記放電電極の一部分または全面を
透明または白色の絶縁膜で覆う。A part or the whole of the discharge electrode is covered with a transparent or white insulating film.
【0015】また、液晶表示装置において、上記の平板
型光源を用いる。In the liquid crystal display device, the above-mentioned flat light source is used.
【0016】[0016]
【発明の実施の形態】図1は本発明に係る平板型光源を
示す一部切断斜視図である。図に示すように、例えばソ
ーダガラス等からなる前面板10、ソーダガラスやセラ
ミック等からなる絶縁基板20、側板50は例えば低融
点ガラス(図示せず)で一体に気密封着され、絶縁基板
20の内面には蛍光体60が塗布され、放電空間30に
は水銀と始動用ガスとしてアルゴンやネオン−アルゴン
等の混合ガスまたはキセノン、クリプトン、アルゴン、
ヘリウム、ネオン等の希ガスの放電ガスとが封入され、
封入圧力は10Paから100kPaである。また、前
面板10の外表面には互いに平行な一対の帯状の放電電
極90、91が設けられ、放電電極90、91は放電空
間30の両端部に位置しており、放電電極90、91は
アルミニウムからなる幅5mmの金属テープを前面板1
0に接着することにより設けられている。また、放電空
間30は例えば110mm×85mmの大きさで、対角
約5.5インチの発光面を有している。FIG. 1 is a partially cutaway perspective view showing a flat light source according to the present invention. As shown in the figure, a front plate 10 made of, for example, soda glass, an insulating substrate 20 made of soda glass, ceramic, or the like, and a side plate 50 are integrally hermetically sealed with, for example, low melting point glass (not shown). A phosphor 60 is applied to the inner surface of the substrate, and mercury and a mixed gas such as argon or neon-argon or xenon, krypton, argon, or the like is used as a starting gas in the discharge space 30.
A rare gas discharge gas such as helium or neon is sealed in,
The filling pressure is from 10 Pa to 100 kPa. Further, a pair of strip-shaped discharge electrodes 90, 91 parallel to each other are provided on the outer surface of the front plate 10, and the discharge electrodes 90, 91 are located at both ends of the discharge space 30, and the discharge electrodes 90, 91 5mm wide metal tape made of aluminum
0 is provided. The discharge space 30 has a size of, for example, 110 mm × 85 mm and has a light emitting surface with a diagonal of about 5.5 inches.
【0017】この平板型光源においては、放電電極9
0、91に10kHzから1MHzの高周波電圧(正弦
波か矩形波、またはパルス電圧)を印加すると、放電空
間30内で電界放電が行なわれ、放電で発生した紫外線
で蛍光体60が励起発光し、光が前面板10を通して放
射される。In this flat light source, the discharge electrode 9
When a high-frequency voltage (sine wave, rectangular wave, or pulse voltage) of 10 kHz to 1 MHz is applied to 0 and 91, electric field discharge is performed in the discharge space 30, and the phosphor 60 is excited and emits light by ultraviolet rays generated by the discharge. Light is emitted through the front plate 10.
【0018】このような平板型光源においては、放電電
極90、91が前面板10の同一面に形成されているか
ら、絶縁基板20に塗布された蛍光体60に対しては放
電で発生したイオン等が直接衝突しないので、蛍光体6
0の劣化が少なくなり、寿命が長い。また、放電電極9
0、91を放電空間30の両端部に設けることで、放電
長が長くなるので、放電させると陽光柱が発生する。こ
のため、蛍光体60は主に陽光柱で励起されることにな
り、高輝度で発光効率が高くなるので、消費電力が小さ
い。また、放電電極90、91が片面にのみ設けられ、
しかも放電電極90、91を放電空間30の両端部に設
ければよいから、放電電極90、91の面積が小さいの
で、感電防止が簡単にできるため、安全である。また、
放電電極90、91は前面板10の外表面に金属テープ
を接着することで設けられているから、非常に簡単に製
造することができる。In such a flat light source, since the discharge electrodes 90 and 91 are formed on the same surface of the front plate 10, ions generated by the discharge are applied to the phosphor 60 applied to the insulating substrate 20. Etc. do not collide directly,
0 is less deteriorated and the life is longer. Also, the discharge electrode 9
Providing 0 and 91 at both ends of the discharge space 30 increases the discharge length, so that a positive column is generated when the discharge is performed. Therefore, the phosphor 60 is mainly excited by the positive column, and has high luminance and high luminous efficiency, so that the power consumption is small. Also, discharge electrodes 90 and 91 are provided only on one side,
In addition, since the discharge electrodes 90 and 91 need only be provided at both ends of the discharge space 30, the area of the discharge electrodes 90 and 91 is small, so that the prevention of electric shock can be easily performed, which is safe. Also,
Since the discharge electrodes 90 and 91 are provided by bonding a metal tape to the outer surface of the front plate 10, it can be manufactured very easily.
【0019】なお、金属薄膜としては金属テープ以外に
金属箔等を用いることができる。また、放電電極として
はITO膜やネサ膜等の透明導電膜、厚膜印刷導電膜か
らなるものを用いてもよく、透明導電膜からなる放電電
極を用いたときには、発光面の面積を大きくすることが
でき、また厚膜印刷導電膜からなる放電電極を用いたと
きには、非常に簡単に製造することができる。また、発
光面が大きくなった場合には、放電電極は一対だけでな
く、途中に複数本設けたり分割して用いてもよい。さら
に、前面板10の内表面(放電空間30側)をMgO等
からなる厚さ数千Åの保護層(図示せず)で覆えば、動
作電圧を低下することができ、スパッタを減少すること
ができるから、さらに寿命を長くすることができる。As the metal thin film, a metal foil or the like can be used other than the metal tape. Also, as the discharge electrode, a transparent conductive film such as an ITO film or a Nesa film, or a thick printed conductive film may be used. When a discharge electrode made of a transparent conductive film is used, the area of the light emitting surface is increased. When a discharge electrode composed of a thick-film printed conductive film is used, it can be manufactured very easily. Further, when the light emitting surface becomes large, not only a pair of discharge electrodes but also a plurality of discharge electrodes may be provided in the middle or divided. Further, if the inner surface of the front plate 10 (discharge space 30 side) is covered with a protective layer (not shown) made of MgO or the like having a thickness of several thousand Å, the operating voltage can be reduced, and the spatter can be reduced. Therefore, the life can be further extended.
【0020】図2(a)、(b)は本発明に係る他の平板型
光源の一部を示す図である。図に示すように、前面板1
0の外表面に形成されたITO膜やネサ膜等の透明導電
膜92の上に重ねてストライプ状の金属導体95やメッ
シュ状の金属導体96を形成した放電電極93、94が
用いられている。また、外部回路との接続用の端子97
が金属導体95、96と一体に形成されている。FIGS. 2A and 2B are views showing a part of another flat light source according to the present invention. As shown in FIG.
Discharge electrodes 93 and 94 in which a stripe-shaped metal conductor 95 and a mesh-shaped metal conductor 96 are formed on a transparent conductive film 92 such as an ITO film or a Nesa film formed on the outer surface of the substrate 0 are used. . A terminal 97 for connection to an external circuit is provided.
Are formed integrally with the metal conductors 95 and 96.
【0021】この平板型光源においては、発光面の面積
を大きくすることができ、しかも透明導電膜92の抵抗
が高くても金属導体95、96を重ねて形成することで
放電電極93、94の全面をほぼ同電位にすることがで
きるから、放電の均一性が増し、発光の均斉度を良くす
ることができる。また、金属導体95、96は抵抗が非
常に小さいから、高輝度を得るために放電電流を増加し
ても、透明導電膜92部分の抵抗損が問題にならない。In this flat light source, the area of the light-emitting surface can be increased, and even if the resistance of the transparent conductive film 92 is high, the metal electrodes 95 and 96 can be formed in an overlapping manner to form the discharge electrodes 93 and 94. Since the entire surface can be set to substantially the same potential, the uniformity of discharge increases, and the uniformity of light emission can be improved. Further, since the metal conductors 95 and 96 have very small resistance, even if the discharge current is increased to obtain high luminance, the resistance loss of the transparent conductive film 92 does not matter.
【0022】図3は本発明に係る他の平板型光源を示す
一部切断斜視図である。図に示すように、絶縁基板20
の放電空間30側の面に断面が略三角形のスペーサ10
0が設けられ、スペーサ100は放電電極90と交叉す
る方向に設けられている。また、蛍光体60が前面板1
0に対向しているスペーサ100の側面や絶縁基板20
の表面に塗布されている。FIG. 3 is a partially cut perspective view showing another flat light source according to the present invention. As shown in FIG.
Spacer 10 having a substantially triangular cross section on the surface on the side of discharge space 30
0 is provided, and the spacer 100 is provided in a direction crossing the discharge electrode 90. In addition, the phosphor 60 is attached to the front plate 1
0 and the insulating substrate 20
It is applied to the surface of.
【0023】この平板型光源においては、スペーサ10
0は前面板10と絶縁基板20との間に設けられている
から、放電空間30の内部が減圧状態でも、スペーサ1
00により前面板10、絶縁基板20の破損をなくすこ
とができるので、発光面を大きくすることができ、また
前面板10、絶縁基板20を薄くして軽量化を図ること
ができる。In this flat light source, the spacer 10
0 is provided between the front plate 10 and the insulating substrate 20, so that even if the inside of the discharge space 30 is under reduced pressure, the spacer 1
Since the front plate 10 and the insulating substrate 20 can be prevented from being damaged by 00, the light emitting surface can be enlarged, and the front plate 10 and the insulating substrate 20 can be thinned to reduce the weight.
【0024】なお、スペーサ100は放電空間30全体
に渡って設ける必要はなく、部分的に設ければよい。ま
た、スペーサ100の形状も上記した三角形に限らず、
例えば階段状に前面板10に向かってだんだん細くなる
形状や、球状、楕円状等、発光面にできるだけ輝度ムラ
が生じないような形状を選べばよい。また、スペーサ1
00、側板50を両者を一緒にまたは別々に絶縁基板2
0上に厚膜印刷法を用いて形成してもよく、この場合に
は非常に簡単に製造することができる。The spacer 100 need not be provided over the entire discharge space 30, but may be provided only partially. Also, the shape of the spacer 100 is not limited to the above-described triangle,
For example, the shape may be selected such that the light emitting surface has as little luminance unevenness as possible, such as a shape that gradually becomes thinner toward the front plate 10 in a stepwise manner, a spherical shape, an elliptical shape, and the like. Spacer 1
00, the side plate 50 is attached to the insulating substrate 2 together or separately.
It may be formed by using a thick-film printing method on top of 0, and in this case, it can be manufactured very easily.
【0025】図4は本発明に係る他の平板型光源を示す
断面図である。図に示すように、放電電極90、91の
上に例えばPET(ポリエチレンテレフタレート)等の
透明な絶縁シート110が接着されている。FIG. 4 is a sectional view showing another flat type light source according to the present invention. As shown in the figure, a transparent insulating sheet 110 such as, for example, PET (polyethylene terephthalate) is adhered on the discharge electrodes 90 and 91.
【0026】この平板型光源においては、絶縁シート1
10により感電を確実に防止することができるので、よ
り安全である。In this flat light source, the insulating sheet 1
10, the electric shock can be surely prevented, so that it is safer.
【0027】なお、絶縁膜である絶縁シートを前面板1
0の全面に設けてもよいし、放電電極90、91の少な
くとも一部だけを覆うように設けてもよい。また、絶縁
膜として白色の絶縁シートを用いれば、拡散シートを兼
ねさせることができる。また、絶縁膜として絶縁フィル
ム、放電電極と同じく厚膜印刷法で形成した絶縁層等を
用いてもよい。The insulating sheet, which is an insulating film, is
0, or may be provided so as to cover at least a part of the discharge electrodes 90 and 91. In addition, if a white insulating sheet is used as the insulating film, it can also serve as a diffusion sheet. Further, an insulating film, an insulating layer formed by a thick film printing method like the discharge electrode, or the like may be used as the insulating film.
【0028】また、図1〜図4に示した平板型光源を液
晶表示装置のバックライトに用いることができる。The flat light source shown in FIGS. 1 to 4 can be used for a backlight of a liquid crystal display.
【0029】[0029]
【発明の効果】本発明に係る平板型光源、液晶表示装置
においては、絶縁基板に塗布された蛍光体に対しては放
電で発生したイオン等が直接衝突しないから、蛍光体の
劣化が少ないので、寿命が長い。また、放電長が長くな
るから、蛍光体は主に陽光柱で励起されるので、高輝度
で発光効率が高くなるため、消費電力が小さい。また、
放電電極が片面にのみ設けられ、しかも放電電極を全面
に設ける必要がないから、放電電極の面積が小さいの
で、安全である。In the flat panel light source and the liquid crystal display device according to the present invention, since the ions and the like generated by the discharge do not directly collide with the phosphor coated on the insulating substrate, the deterioration of the phosphor is small. , Long life. In addition, since the discharge length is long, the phosphor is mainly excited by the positive column, so that the luminance is high and the luminous efficiency is high, so that the power consumption is small. Also,
Since the discharge electrode is provided only on one surface and the discharge electrode does not need to be provided on the entire surface, the area of the discharge electrode is small, so that it is safe.
【0030】また、放電電極として金属薄板からなるも
のを用いたときには、非常に簡単に製造することができ
る。When a discharge electrode made of a thin metal plate is used, it can be manufactured very easily.
【0031】また、放電電極として透明導電膜からなる
ものを用いたときには、発光面の面積を大きくすること
ができる。When a discharge electrode made of a transparent conductive film is used, the area of the light emitting surface can be increased.
【0032】また、放電電極として、透明導電膜と、透
明導電膜の少なくとも一部分に重ねて設けられたストラ
イプ状またはメッシュ状の金属導体とからなるものを用
いたときには、発光面の面積を大きくすることができ、
しかも放電電極の全面をほぼ同電位にすることができる
から、放電の均一性が増し、発光の均斉度を良くするこ
とができる。When a discharge electrode composed of a transparent conductive film and a striped or mesh-shaped metal conductor provided so as to overlap at least a part of the transparent conductive film is used, the area of the light emitting surface is increased. It is possible,
In addition, since the entire surface of the discharge electrode can be set at substantially the same potential, the uniformity of the discharge is increased, and the uniformity of the light emission can be improved.
【0033】また、前面板の内表面に保護層を設けたと
きには、動作電圧を低下することができ、スパッタを減
少することができるから、さらに寿命を長くすることが
できる。Further, when a protective layer is provided on the inner surface of the front plate, the operating voltage can be reduced and spatter can be reduced, so that the life can be further extended.
【0034】また、前面板と絶縁基板との間にスペーサ
を放電電極と交叉する方向に設け、絶縁基板およびスペ
ーサの表面に蛍光体を塗布したときには、放電空間の内
部が減圧状態でも、スペーサにより前面板、絶縁基板の
破損をなくすことができるから、発光面を大きくするこ
とができ、また前面板、絶縁基板を薄くして軽量化を図
ることができる。Further, a spacer is provided between the front plate and the insulating substrate in a direction crossing the discharge electrode, and when a phosphor is applied to the surfaces of the insulating substrate and the spacer, even if the inside of the discharge space is in a reduced pressure state, the spacer is used. Since the front plate and the insulating substrate can be prevented from being damaged, the light emitting surface can be enlarged, and the front plate and the insulating substrate can be made thin to reduce the weight.
【0035】また、側板、スペーサの少なくとも一方を
厚膜印刷法を用いて絶縁基板上に形成したときには、非
常に簡単に製造することができる。Further, when at least one of the side plate and the spacer is formed on the insulating substrate by using the thick film printing method, it can be manufactured very easily.
【0036】また、放電電極の一部分または全面を透明
または白色の絶縁膜で覆ったときには、感電を確実に防
止することができるから、より安全である。When a part or the whole surface of the discharge electrode is covered with a transparent or white insulating film, electric shock can be surely prevented, so that it is safer.
【図1】本発明に係る平板型光源を示す一部切断斜視図
である。FIG. 1 is a partially cut perspective view showing a flat light source according to the present invention.
【図2】本発明に係る他の平板型光源の一部を示す図で
ある。FIG. 2 is a diagram showing a part of another flat light source according to the present invention.
【図3】本発明に係る他の平板型光源を示す一部切断斜
視図である。FIG. 3 is a partially cut perspective view showing another flat light source according to the present invention.
【図4】本発明に係る他の平板型光源を示す断面図であ
る。FIG. 4 is a sectional view showing another flat light source according to the present invention.
【図5】従来の平板型希ガス放電灯を示す断面図であ
る。FIG. 5 is a cross-sectional view showing a conventional flat rare gas discharge lamp.
10…前面板 20…絶縁基板 50…側板 60…蛍光体 90…放電電極 91…放電電極 92…透明導電膜 93…放電電極 94…放電電極 95…金属導体 96…金属導体 100…スペーサ 110…絶縁シート DESCRIPTION OF SYMBOLS 10 ... Front plate 20 ... Insulating substrate 50 ... Side plate 60 ... Phosphor 90 ... Discharge electrode 91 ... Discharge electrode 92 ... Transparent conductive film 93 ... Discharge electrode 94 ... Discharge electrode 95 ... Metal conductor 96 ... Metal conductor 100 ... Spacer 110 ... Insulation Sheet
Claims (9)
た絶縁基板と側板とを組み合わせて密閉容器を構成し、
上記密閉容器の内部に放電ガスを封入し、上記前面板の
外面に複数の放電電極を形成したことを特徴とする平板
型光源。An airtight container is constituted by combining a front plate having translucency, an insulating substrate coated with a phosphor, and a side plate.
A flat light source, characterized in that a discharge gas is sealed in the closed vessel and a plurality of discharge electrodes are formed on an outer surface of the front plate.
を用いたことを特徴とする請求項1に記載の平板型光
源。2. A flat light source according to claim 1, wherein said discharge electrode is made of a thin metal plate.
のを用いたことを特徴とする請求項1に記載の平板型光
源。3. A flat light source according to claim 1, wherein said discharge electrode is made of a transparent conductive film.
透明導電膜の少なくとも一部分に重ねて設けられたスト
ライプ状またはメッシュ状の金属導体とからなるものを
用いたことを特徴とする請求項1に記載の平板型光源。4. The discharge electrode according to claim 1, wherein the discharge electrode comprises a transparent conductive film and a stripe-shaped or mesh-shaped metal conductor provided so as to overlap at least a part of the transparent conductive film. 2. The flat light source according to 1.
を特徴とする請求項1〜4のいずれかに記載の平板型光
源。5. The flat light source according to claim 1, wherein a protective layer is provided on an inner surface of said front plate.
サを上記放電電極と交叉する方向に設け、上記絶縁基板
および上記スペーサの表面に上記蛍光体を塗布したこと
を特徴とする請求項1〜5のいずれかに記載の平板型光
源。6. The apparatus according to claim 1, wherein a spacer is provided between said front plate and said insulating substrate in a direction crossing said discharge electrode, and said phosphor is applied to surfaces of said insulating substrate and said spacer. 6. The flat light source according to any one of 1 to 5.
を厚膜印刷法を用いて上記絶縁基板上に形成したことを
特徴とする請求項6に記載の平板型光源。7. The flat light source according to claim 6, wherein at least one of said side plate and said spacer is formed on said insulating substrate by using a thick film printing method.
は白色の絶縁膜で覆ったことを特徴とする請求項1〜7
のいずれかに記載の平板型光源。8. The discharge electrode according to claim 1, wherein at least a part of said discharge electrode is covered with a transparent or white insulating film.
A flat light source according to any one of the above.
ことを特徴とする液晶表示装置。9. A liquid crystal display device using the flat light source according to claim 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9021269A JPH10222083A (en) | 1997-02-04 | 1997-02-04 | Flat board type source of light and liquid crystal display thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9021269A JPH10222083A (en) | 1997-02-04 | 1997-02-04 | Flat board type source of light and liquid crystal display thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH10222083A true JPH10222083A (en) | 1998-08-21 |
Family
ID=12050406
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9021269A Pending JPH10222083A (en) | 1997-02-04 | 1997-02-04 | Flat board type source of light and liquid crystal display thereof |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH10222083A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003003408A1 (en) * | 2001-06-27 | 2003-01-09 | Harison Toshiba Lighting Corporation | Outside electrode discharge lamp |
US6917354B2 (en) | 2001-02-13 | 2005-07-12 | Nec Lcd Technologies, Inc. | Fluorescent lamp, fluorescent lamp unit, liquid crystal display device, and method of emitting light |
JP2006244790A (en) * | 2005-03-02 | 2006-09-14 | Lecip Corp | Flat discharge tube |
KR100745746B1 (en) * | 2001-01-04 | 2007-08-02 | 삼성전자주식회사 | Flat lamp with vertical facing electrodes |
WO2007101147A2 (en) * | 2006-02-27 | 2007-09-07 | Honeywell International Inc. | Methods and apparatus for extending the lifespan of fluorescent lamps |
KR101041054B1 (en) * | 2004-05-24 | 2011-06-13 | 삼성전자주식회사 | Flat light source device and liquid crystal display device having the same |
KR101207939B1 (en) * | 2004-12-31 | 2012-12-05 | 엘지디스플레이 주식회사 | Backlight and method for fabricating the same |
-
1997
- 1997-02-04 JP JP9021269A patent/JPH10222083A/en active Pending
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100745746B1 (en) * | 2001-01-04 | 2007-08-02 | 삼성전자주식회사 | Flat lamp with vertical facing electrodes |
US6917354B2 (en) | 2001-02-13 | 2005-07-12 | Nec Lcd Technologies, Inc. | Fluorescent lamp, fluorescent lamp unit, liquid crystal display device, and method of emitting light |
WO2003003408A1 (en) * | 2001-06-27 | 2003-01-09 | Harison Toshiba Lighting Corporation | Outside electrode discharge lamp |
KR100745958B1 (en) | 2001-06-27 | 2007-08-02 | 하리손 도시바 라이팅구 가부시키가이샤 | Outside Electrode Discharge Lamp |
KR101041054B1 (en) * | 2004-05-24 | 2011-06-13 | 삼성전자주식회사 | Flat light source device and liquid crystal display device having the same |
KR101207939B1 (en) * | 2004-12-31 | 2012-12-05 | 엘지디스플레이 주식회사 | Backlight and method for fabricating the same |
JP2006244790A (en) * | 2005-03-02 | 2006-09-14 | Lecip Corp | Flat discharge tube |
WO2007101147A2 (en) * | 2006-02-27 | 2007-09-07 | Honeywell International Inc. | Methods and apparatus for extending the lifespan of fluorescent lamps |
WO2007101147A3 (en) * | 2006-02-27 | 2008-03-13 | Honeywell Int Inc | Methods and apparatus for extending the lifespan of fluorescent lamps |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP3264938B2 (en) | Flat fluorescent lamp for backlight and liquid crystal display device provided with the flat fluorescent lamp | |
JP2000082441A (en) | Flat plate light source | |
JP2007087900A (en) | Back light system | |
JP3026416B2 (en) | Flat light source | |
JPH10222083A (en) | Flat board type source of light and liquid crystal display thereof | |
JP4754914B2 (en) | Surface light source device and display device | |
KR20060105368A (en) | Light generating unit, method of manufacturing the light generating unit, back light assembly having the light generating unit and display apparatus having the back light assembly | |
JP2000011958A (en) | Plate-type light source and liquid crystal display device thereof | |
JP2004207227A (en) | Flat lamp structure | |
JP2006120618A (en) | Panel assembly, assembly of plasma display device using this, and manufacturing method of plasma display device assembly | |
JPH117916A (en) | Flat plate type light source and liquid crystal display | |
US20070296327A1 (en) | Planar Discharge Lamp And Lighting Device | |
JP3722025B2 (en) | Flat discharge light source | |
JP3633227B2 (en) | Discharge device, illumination device, and liquid crystal display device | |
JP3622572B2 (en) | Flat light source | |
JPH11307053A (en) | Discharge device | |
JP2000323100A (en) | Flat light source and liquid crystal display device using it | |
US20070152595A1 (en) | Plasma display panel | |
JP2000228172A (en) | Flat type light source | |
JP3685073B2 (en) | Flat light source | |
JP2000011950A (en) | Flat-type light source | |
JP3538695B2 (en) | Discharge device | |
KR20050072987A (en) | Surface light source device and liquid crystal display apparatus having the same | |
JP2003031182A (en) | Flat discharge tube | |
JPH11329356A (en) | Discharge device |