JPH01231255A - Plate type fluorescent lamp - Google Patents
Plate type fluorescent lampInfo
- Publication number
- JPH01231255A JPH01231255A JP5694388A JP5694388A JPH01231255A JP H01231255 A JPH01231255 A JP H01231255A JP 5694388 A JP5694388 A JP 5694388A JP 5694388 A JP5694388 A JP 5694388A JP H01231255 A JPH01231255 A JP H01231255A
- Authority
- JP
- Japan
- Prior art keywords
- pair
- fluorescent lamp
- glass container
- mercury
- discharge electrodes
- 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.)
- Granted
Links
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000011521 glass Substances 0.000 claims abstract description 18
- 229910052753 mercury Inorganic materials 0.000 claims abstract description 18
- 239000005357 flat glass Substances 0.000 claims abstract description 8
- 239000011248 coating agent Substances 0.000 claims abstract description 7
- 238000000576 coating method Methods 0.000 claims abstract description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052786 argon Inorganic materials 0.000 abstract description 2
- 239000007789 gas Substances 0.000 abstract description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 abstract 1
- 239000004332 silver Substances 0.000 abstract 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 9
- 239000004973 liquid crystal related substance Substances 0.000 description 8
- 229910052759 nickel Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000003213 activating effect Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 2
- XPKUFSDFFJLEMC-UHFFFAOYSA-N [Hg].[Ti] Chemical compound [Hg].[Ti] XPKUFSDFFJLEMC-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 229910052719 titanium Inorganic materials 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 150000002815 nickel Chemical class 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000010421 standard material Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Discharge Lamp (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
Description
【発明の詳細な説明】
イ） 産業上の利用分野
本発明はワードプロセッサ或いはパーソナルコンピュー
タ等における液晶デイスプレィ装置や液晶ＴＶ装置のバ
ックライトとして好適な平面型螢光灯に関する。DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a flat fluorescent lamp suitable as a backlight for a liquid crystal display device or a liquid crystal TV device in a word processor or a personal computer.
１０１ 従来の技術
液晶パネルは軽薄で消費宛カが少ないという利点がある
ため、液晶ＴＶ等の各種デイスプレィ装置として広く利
用されている。一方、液晶自身は非発光であるため、バ
ックライトとして例えば特開昭６２−２０８５３７号公
報（ＨＯＩＪ６１／３０）等に示される様な平面型螢光
灯が用いられる。101 Prior Art Liquid crystal panels have the advantage of being light and thin and consume less power, so they are widely used in various display devices such as liquid crystal TVs. On the other hand, since the liquid crystal itself does not emit light, a flat fluorescent lamp as shown in, for example, Japanese Patent Application Laid-Open No. 62-208537 (HOIJ61/30) is used as a backlight.
第８図は５インチの液晶ＴＶ用の平面型螢光灯の一部切
欠斜視図、第９図は同平面図を示し、（１）（２）はそ
の内面に螢光塗料が塗布された一対の上ド平板ガラス（
３）はこの上ド平板ガラス間を所定間隔に保持する枠ガ
ラス、（４１（４１は断面コ字状の冷陰極型一対の放電
゛電極、（５１（５＋はこの放′這屯極に接続され、外
部へ突出するリード片であり、電気的機能の外に前記放
電電極を機械的に支持する機能をも有する。（６）は容
器内の空気を排気すると共にアルゴンガス及び水銀蒸気
を封入せしめるチップ管、（７）は前記水銀蒸気を発生
ちるため、前記チップ管（６）内Ｉこ配置された水銀ゲ
ッタである。この水銀ゲッタ（７）は、周知の通りニッ
ケル板上にチタン水銀（Ｔｉ３Ｈｇ）が定番されたもの
でありチップ管（６）先端の溶４後、高周波加熱により
加熱され、容器内に水銀蒸気を発生せしめる。Figure 8 is a partially cutaway perspective view of a flat fluorescent lamp for a 5-inch LCD TV, Figure 9 is a plan view of the same, and (1) and (2) show fluorescent paint coated on the inner surface. A pair of upper flat glass (
3) is a frame glass that maintains the upper flat glass at a predetermined distance; (41 is a pair of cold cathode type discharge electrodes with a U-shaped cross section; It is a lead piece that protrudes to the outside, and has the function of mechanically supporting the discharge electrode in addition to its electrical function. (6) is a lead piece that exhausts the air inside the container and also fills in argon gas and mercury vapor. The mercury getter (7) is placed inside the tip tube (6) to generate the mercury vapor.As is well known, the mercury getter (7) is made of titanium mercury on a nickel plate. (Ti3Hg) is a standard material, and after melting the tip of the tip tube (6), it is heated by high frequency heating to generate mercury vapor in the container.
ところで、平面型置光灯の輝度は温度ｌこ依存し、第１
０図に示す如く、温度が高い方が水銀蒸気がより活性化
されるため輝度は上昇するっしかしながら、上述の平面
型置光灯の放電電極は点灯中、所定温良で発熱し、ガラ
ス容器内の温度も上昇するが、ガラス容器を通じて放熱
するため水銀蒸気はあまり活性化されず、点灯後時間が
経過してもあまり輝度が上昇しない。By the way, the brightness of a flat type lamp depends on the temperature, and the first
As shown in Figure 0, the higher the temperature, the more mercury vapor is activated and the brightness increases. The temperature of the lamp also rises, but because the heat is radiated through the glass container, the mercury vapor is not activated very much, and the brightness does not increase much even after the time elapses after lighting.
また、水銀ゲッタ（７）は製造時の加熱に家り多くの水
銀を容器内に放出するが、ある程度の量は残留している
。そして、この残留する水銀は、点灯時の加熱により、
更に蒸発し、第１０図の特性ｌこよって容器内の水銀蒸
気圧をせしめ、水銀蒸気の活性化がはかられるのである
が、従来の水銀ゲッタの位置は放電を極から離れており
、あまり温度上昇の少ない場所であるため、水銀蒸気の
活性化があまり期待できなかった。Further, the mercury getter (7) releases a large amount of mercury into the container due to heating during manufacturing, but a certain amount remains. This remaining mercury is removed by heating during lighting.
Further evaporation occurs, increasing the mercury vapor pressure in the container and activating the mercury vapor due to the characteristics shown in Figure 10. However, the conventional mercury getter is located far away from the discharge pole, and does not Because the temperature rise was small in this location, we could not expect much activation of mercury vapor.
Ｈ発明が解決しようとする課題
本発明は上述の点に鑑み為されたものであり、従来に比
べて輝度を向上せしめた平面型置光灯を提供するもので
ある。Problems to be Solved by the Invention The present invention has been made in view of the above-mentioned points, and provides a flat type lamp with improved brightness compared to the conventional one.
に）課題を解決するための手段
本発明はガラス容器の発光面以外の部分に断熱性被膜を
被覆してなる。平面型置光灯である。B) Means for Solving the Problems In the present invention, a portion of the glass container other than the light emitting surface is coated with a heat insulating coating. It is a flat type lamp.
また、本発明は放電電極１こ水銀ゲッタを配置してなる
平面型置光灯であるっ
また、本発明は放電電極の長さを発光面の一対の対向す
る辺の長さより短かくしてなる平面型置光灯である、
オ→作用
本発明の平面型置光灯はガラス容器内の温度を従来のも
のより高く保てるので水銀蒸気が活性化される。Further, the present invention relates to a flat type lamp in which one discharge electrode and a mercury getter are arranged. The flat type lamp according to the present invention can maintain the temperature inside the glass container higher than that of conventional lamps, thereby activating mercury vapor.
また、放電１掻の発熱により水銀ゲッタが加熱され水銀
蒸気圧が上昇するっ
また、発光面中央付近での輝度が端部に比べて向上する
（へ）実施例
以下、図面に従い本発明を３インチの液晶ＴＶのバック
ライトに適用した一実施例ｔこついて説明する。In addition, the mercury getter is heated by the heat generated by one stroke of discharge, and the mercury vapor pressure increases, and the brightness near the center of the light emitting surface is improved compared to the edges. An example applied to the backlight of an inch LCD TV will be explained in detail.
第１図イ）（四は本実施例の平面型置光灯の斜視図及び
側断面図であり、従来例と同一部分（こは同一符号を付
し、説明を省略する。ガラス容器の周囲のうち発光面、
チップ管（６）及びリード片（５）以外の部分は断熱性
被膜（８）によって、ｖ覆されている。この断熱性被膜
ζこは例えば市販の絶縁性ビニールテープが用いられる
。Figure 1A) (4 is a perspective view and a side sectional view of the flat type positioning light of this embodiment, and the same parts as the conventional example (are given the same reference numerals and explanations are omitted. Surroundings of the glass container) Among them, the light emitting surface,
Portions other than the tip tube (6) and lead piece (5) are covered with a heat insulating coating (8). For example, a commercially available insulating vinyl tape may be used as the heat insulating coating ζ.
従って、ガラス容器は断熱性液、！（８）により保温さ
れるため、ガラス容器内の温度は従来のものに比べて約
５℃上昇し、水銀蒸気が活性化される。Therefore, the glass container is an insulating liquid,! Since heat is maintained by (8), the temperature inside the glass container rises by about 5° C. compared to the conventional one, and mercury vapor is activated.
第２図は点灯時間−輝度特性を示し、点灯時間の経過に
よる輝度上昇の割合は、本実施例のもの（実線）は従来
のもの（点線）に比べて非常に大きくなっている。FIG. 2 shows lighting time vs. brightness characteristics, and the rate of increase in brightness with the passage of lighting time is much larger in this example (solid line) than in the conventional one (dotted line).
次に、第３図は本発明の他の実施例における平面型置光
灯の側断面図、第４図は同放亀電極の斜視図である。Next, FIG. 3 is a side sectional view of a flat type lamp according to another embodiment of the present invention, and FIG. 4 is a perspective view of the floating electrode.
本実施例における水銀ゲッタ（７′）は放電電極（４）
の一部上１こ同省されているう
尚、通常、水銀ゲッタはニッケル基板上にチタン水（１
４（Ｔｉ ５Ｈｇ ）を定番させたものであるが、放′
昨電極上に形成する場合、本実施例のように放に！極（
４１上（こニッケル基板をろう省させても良いし、放′
眠電抱の一部に前ニッケル板を用い、放屯電廟と兼用さ
せても良い。The mercury getter (7') in this example is the discharge electrode (4).
However, the mercury getter is usually made by depositing titanium water (1 part) on a nickel substrate.
4 (Ti 5Hg) as a standard, but
When forming on the previous electrode, as in this example, leave it alone! very(
41 (This nickel substrate may be soldered or
It is also possible to use a front nickel plate for a part of the sleeping train and use it for the same purpose as the Butun Temple.
″従って、点灯時、放眠直極（４１（４１ｉｔ加熱され
て、水銀ゲッタ（７）から水銀のみが蒸発し容器内の水
銀蒸気圧を上昇せしめ、活性化がはかられる。第５図は
点灯時間−輝度特性を示し、点灯時間の経過による輝度
上昇の割合は、本実施例のもの（実線）は従来のもの（
点線）に比べて非常に大きくなっている。``Therefore, when the lamp is turned on, the mercury getter (7) is heated and only mercury evaporates from the mercury getter (7), increasing the mercury vapor pressure in the container and activating it. The lighting time-brightness characteristics are shown, and the rate of increase in brightness with the passage of lighting time is that of this example (solid line) and the conventional one (
It is much larger than the dotted line).
尚、消灯後は、温度低ドと共に水銀蒸気圧はドがり、容
器内の水銀蒸気の一部は水銀ゲッタ（７）のチタンと化
合し再びチタン水銀となってニッケル基板上に定着する
。After the light is turned off, the mercury vapor pressure decreases as the temperature decreases, and a part of the mercury vapor in the container combines with the titanium of the mercury getter (7) to become titanium mercury again and is fixed on the nickel substrate.
更に、第６図は本発明の他の実施例１こおける平面型螢
光灯の平面図である。−点鎖線で示す発光面は５インチ
の液晶ＴＶζこ適用する大きさであり、放電電極（４１
＋４１の長さしは一点鎖梃で示す発光面のたての長さし
の２／／３となっている。３第７図イ）〜に）は発光面
上の各部に３ける輝度を示すもので、実線は本実施例の
もの、点線は従来のものであり、いずれも２（Ｗ）で駆
動した特性である。これによると、発光面のうちほとん
どの部分において輝度が大巾に向上し、わずか端部の４
隅のみで従来に比べて輝度が低ドしただけである。Furthermore, FIG. 6 is a plan view of a flat fluorescent lamp in another embodiment 1 of the present invention. - The light emitting surface indicated by the dotted chain line is of a size applicable to a 5-inch liquid crystal TV, and the discharge electrode (41
The length of +41 is 2/3 of the vertical length of the light emitting surface indicated by the chain lever. Figure 7 (a) to (a) to (a)) show the luminance of each part on the light emitting surface.The solid line is that of this example, and the dotted line is that of the conventional one, and both show the characteristics when driven at 2 (W). It is. According to this, the brightness has greatly improved in most parts of the light emitting surface, and only in the 4th part of the edge.
The only difference is that the brightness at the corners is lower than before.
また、発光面に３ける輝度の均一性という点では従来の
もの４と比べて悪いが、液晶ＴＶ用のバックライトとし
ては、画面端部で若干暗くなるが、一般にＴＶ画面を見
る場合、神経は画面の９央付近に集中していることが多
いため、端部での輝度低下はあまり気にならない、従っ
て、同じ消費電力のバックライトであれば、画面中央付
近での輝度が高い方が画面が見易すく液晶ＴＶに好適で
ある。In addition, the uniformity of the brightness on the light emitting surface is worse than the conventional one, but as a backlight for LCD TVs, it gets a little dark at the edges of the screen, but generally when viewing a TV screen, it is difficult to use. is often concentrated near the center of the screen, so the drop in brightness at the edges is not much of a concern.Therefore, for a backlight with the same power consumption, it is better to have higher brightness near the center of the screen. The screen is easy to see and is suitable for liquid crystal TVs.
（ト）発明の効果
上述の如く本発明に依れば、ガラス容器の発光面以外の
部分を断熱性被膜で被覆したので、ガラス容器内の温度
を従来のものより高く保てるので水銀蒸気が活性化され
輝度が向上する。(G) Effects of the Invention As described above, according to the present invention, the parts of the glass container other than the light-emitting surface are coated with a heat insulating film, so the temperature inside the glass container can be maintained higher than in the conventional case, and mercury vapor becomes active. brightness is improved.
また、水銀ゲッタを放電電極に配置したので、放電電極
の発熱４こより水銀蒸気圧が上昇し、輝度が向上する。Furthermore, since the mercury getter is disposed on the discharge electrode, the mercury vapor pressure increases from the heat generated by the discharge electrode, thereby improving brightness.
更に、放電電極の長さを発光面の一辺よりも短くしたの
で、発光面中央部付近での輝度が大巾に向上し、液晶Ｔ
Ｖに用いて画質の向上がはかれる。Furthermore, since the length of the discharge electrode is made shorter than one side of the light emitting surface, the brightness near the center of the light emitting surface is greatly improved, and the liquid crystal T
The image quality can be improved by using V.
第１図イ）（ロ）は本発明の一実施例における平面型螢
光灯の斜視図及び側断面図、第２図は同輝度特性を示す
図、第３図は本発明の他の実施例における平面型螢光灯
の側断面図、第４図は同放電電極の斜視図、第５図は同
輝度特性を示す図、第６図は本発明の更に他の実施例に
おける平面型螢光灯の平面図、第７図イ）むｌｌ／ｊｆ
−）は夫々同輝度特性図である。
第８図は従来の平面型螢光灯の一部切欠料視図、第９図
は同平面図、第１０図は水銀蒸気圧の温度特性図である
。
（１１（２１・・・上ド平板ガラス、（３）・・・砕ガ
ラス、（４１（４１・・・放電電極、（５）・・・リー
ド片、（６）・・・チップ管、（７）＋７１・・・水銀
ゲッタ、（８）・・・断熱性被膜。Figures 1A and 2B are a perspective view and a side sectional view of a flat fluorescent lamp according to an embodiment of the present invention, Figure 2 is a diagram showing the same brightness characteristics, and Figure 3 is another embodiment of the present invention. FIG. 4 is a perspective view of the discharge electrode, FIG. 5 is a diagram showing the luminance characteristics, and FIG. 6 is a side sectional view of the flat fluorescent lamp in another embodiment of the present invention. Plan view of the light lamp, Figure 7 a) Mll/jf
-) are the same luminance characteristic diagrams. FIG. 8 is a partially cutaway view of a conventional flat fluorescent lamp, FIG. 9 is a plan view thereof, and FIG. 10 is a temperature characteristic diagram of mercury vapor pressure. (11 (21... Upper flat glass, (3)... Crushed glass, (41 (41... Discharge electrode, (5)... Lead piece, (6)... Chip tube, ( 7) +71... Mercury getter, (8)... Heat insulating coating.
Claims (3)
ラス容器内に、一対の放電電極を配置してなる平面型螢
光灯において、 前記ガラス容器の発光面以外の部分に断熱性被膜を被覆
してなる平面型螢光灯。(1) In a flat fluorescent lamp in which a pair of discharge electrodes are arranged in a glass container in which a pair of flat glasses face each other with a predetermined interval, a heat insulating coating is applied to a portion of the glass container other than the light emitting surface. A flat fluorescent lamp with a coating.
ラス容器内に、一対の放電電極を配置してなる平面型螢
光灯において、 前記放電電極に水銀ゲツタを配置してなる平面型螢光灯
。(2) A flat fluorescent lamp in which a pair of discharge electrodes is arranged in a glass container in which a pair of flat glasses face each other with a predetermined interval, and a mercury getter is arranged in the discharge electrode. Light lamp.
ラス容器内の発光面の一対の対向する辺に沿つて一対の
放電電極を夫々配置してなる平面型螢光灯において、 前記放電電極の長さを前記辺の長さより短かくすること
により、前記発光面の中央部付近での輝度を端部に比べ
て向上せしめてなる平面型螢光灯。(3) A flat fluorescent lamp comprising a pair of discharge electrodes arranged along a pair of opposite sides of a light emitting surface in a glass container in which a pair of flat glasses face each other with a predetermined interval, the discharge electrodes A planar fluorescent lamp having a length shorter than the length of the sides to improve brightness near the center of the light emitting surface compared to the ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63056943A JP2783805B2 (en) | 1988-03-10 | 1988-03-10 | Flat fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63056943A JP2783805B2 (en) | 1988-03-10 | 1988-03-10 | Flat fluorescent lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01231255A true JPH01231255A (en) | 1989-09-14 |
| JP2783805B2 JP2783805B2 (en) | 1998-08-06 |
Family
ID=13041627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63056943A Expired - Fee Related JP2783805B2 (en) | 1988-03-10 | 1988-03-10 | Flat fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2783805B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0415144U (en) * | 1990-05-30 | 1992-02-06 | ||
| JPH0589832A (en) * | 1991-09-27 | 1993-04-09 | Toshiba Lighting & Technol Corp | Fluorescent lamp |
| JPH05307945A (en) * | 1991-04-24 | 1993-11-19 | Sanyo Electric Co Ltd | Plane fluorescent lamp |
| US7352128B2 (en) * | 2004-09-21 | 2008-04-01 | Mirae Corporation | Gas injection port structure of flat fluorescent lamp |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61269848A (en) * | 1985-05-25 | 1986-11-29 | Matsushita Electric Works Ltd | Plane type low pressure discharge lamp |
| JPH0171859U (en) * | 1987-11-04 | 1989-05-15 |
-
1988
- 1988-03-10 JP JP63056943A patent/JP2783805B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61269848A (en) * | 1985-05-25 | 1986-11-29 | Matsushita Electric Works Ltd | Plane type low pressure discharge lamp |
| JPH0171859U (en) * | 1987-11-04 | 1989-05-15 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0415144U (en) * | 1990-05-30 | 1992-02-06 | ||
| JPH05307945A (en) * | 1991-04-24 | 1993-11-19 | Sanyo Electric Co Ltd | Plane fluorescent lamp |
| JPH0589832A (en) * | 1991-09-27 | 1993-04-09 | Toshiba Lighting & Technol Corp | Fluorescent lamp |
| US7352128B2 (en) * | 2004-09-21 | 2008-04-01 | Mirae Corporation | Gas injection port structure of flat fluorescent lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2783805B2 (en) | 1998-08-06 |
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