JPH054200Y2 - - Google Patents
Info
- Publication number
- JPH054200Y2 JPH054200Y2 JP13688888U JP13688888U JPH054200Y2 JP H054200 Y2 JPH054200 Y2 JP H054200Y2 JP 13688888 U JP13688888 U JP 13688888U JP 13688888 U JP13688888 U JP 13688888U JP H054200 Y2 JPH054200 Y2 JP H054200Y2
- Authority
- JP
- Japan
- Prior art keywords
- film
- flat
- reflective film
- liquid crystal
- flat glass
- 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.)
- Expired - Lifetime
Links
- 239000005357 flat glass Substances 0.000 claims description 20
- 239000004973 liquid crystal related substance Substances 0.000 claims description 10
- 239000010408 film Substances 0.000 description 35
- 230000000694 effects Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000007738 vacuum evaporation Methods 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
【考案の詳細な説明】
(イ) 産業上の利用分野
本考案は液晶TV等の液晶表示装置のバツクラ
イトに好適な平面型螢光灯に関する。[Detailed description of the invention] (a) Industrial application field The present invention relates to a flat fluorescent lamp suitable for backlighting of liquid crystal display devices such as liquid crystal TVs.
(ロ) 従来の技術
液晶表示装置のバツクライトとしては従来、実
開昭54−111985号公報に示される平面型螢光灯が
好適である。(B) Prior Art Conventionally, a flat fluorescent lamp disclosed in Japanese Utility Model Application Publication No. 111985/1985 has been suitable as a backlight for a liquid crystal display device.
上述の平面型螢光灯は第２図に示す如く、一対
の平板状ガラス１，２及び枠ガラス３によりガラ
ス容器が構成され、このガラス容器内には一対の
放電々極４，４が配されている。また、前記一対
の平板状ガラス１，２の各内面には螢光膜５，５
が形成されている。 As shown in FIG. 2, the above-mentioned flat type fluorescent lamp has a glass container made up of a pair of flat glasses 1 and 2 and a frame glass 3, and a pair of discharge electrodes 4 and 4 are arranged inside this glass container. has been done. Further, on each inner surface of the pair of flat glasses 1 and 2, fluorescent films 5 and 5 are provided.
is formed.
更に、下側の平板状ガラス２の外側にはアルミ
ニウム薄膜等の可視光を反射する反射膜６が形成
されている。従つて、下側の平板状ガラス２を透
過して外部へ射出されようとする光は全てこの反
射膜６で上方へ反射され、上側の平板状ガラス１
を透過して液晶パネル（図示省略）を照射するこ
とになり輝度が向上する。 Further, on the outside of the lower flat glass 2, a reflective film 6 such as an aluminum thin film that reflects visible light is formed. Therefore, all the light that is about to pass through the lower flat glass 2 and be emitted to the outside is reflected upward by the reflective film 6, and is reflected upward by the upper flat glass 1.
The light passes through and illuminates a liquid crystal panel (not shown), improving brightness.
しかしながら、上述の平面型螢光灯において、
反射膜６で反射される光は螢光膜５及び下側平板
ガラス２を往復で透過するため減衰が著しくあま
り輝度の向上が望めないという欠点がある。 However, in the above-mentioned flat fluorescent lamp,
Since the light reflected by the reflective film 6 passes back and forth through the fluorescent film 5 and the lower flat glass 2, there is a drawback that the attenuation is significant and it is difficult to expect much improvement in brightness.
この点を解決するために前記反射膜６を下側平
板状ガラス２内面に形成する方法が考えられる
が、この方法によると、放電々極４，４間の放電
が金属よりなる反射膜６に対して行なわれるため
均一な放電が得られないという欠点がある。 In order to solve this problem, a method can be considered in which the reflective film 6 is formed on the inner surface of the lower flat glass 2, but according to this method, the discharge between the discharge electrodes 4, 4 is formed on the reflective film 6 made of metal. There is a drawback that a uniform discharge cannot be obtained because the discharge is carried out in contrast to each other.
(ハ) 考案が解決しようとする課題
本考案は上述の点に鑑み為されたものであり、
反射膜を下側の平板状ガラスの内面に形成しても
放電々極間の放電には何ら悪影響を与えない平面
型螢光灯を提案するものである。(c) Problems to be solved by the invention This invention has been devised in view of the above-mentioned points.
The present invention proposes a flat fluorescent lamp that does not have any adverse effect on the discharge between the discharge electrodes even if a reflective film is formed on the inner surface of the lower flat glass.
(ニ) 課題を解決するための手段
本考案は、液晶表示パネルが対向する方の平板
状ガラスの内面に螢光膜を形成し、前記液晶表示
パネルが対向しない方の平板状ガラスの内面に反
射膜を形成すると共に、この反射膜上に透明絶縁
膜を形成してなる。(d) Means for Solving the Problems The present invention forms a fluorescent film on the inner surface of the flat glass that faces the liquid crystal display panel, and forms a fluorescent film on the inner surface of the flat glass that does not face the liquid crystal display panel. A reflective film is formed and a transparent insulating film is formed on the reflective film.
(ホ) 作用
上述の手段により反射膜で反射される光は下側
の平板状ガラスで減衰されることなく透明絶縁膜
のみを透過して上方へ照射される。(e) Effect The light reflected by the reflective film by the above-mentioned means is not attenuated by the lower flat glass and is irradiated upward through only the transparent insulating film.
また、反射板は透明絶縁膜により放電々極とは
電気的に絶縁されているため放電々極間の放電に
影響を与えることがない。 Further, since the reflective plate is electrically insulated from the discharge electrodes by the transparent insulating film, it does not affect the discharge between the discharge electrodes.
(ヘ) 実施例
以下、図面に従い本考案の一実施例を説明す
る。(f) Example An example of the present invention will be described below with reference to the drawings.
第１図は本実施例における平面型螢光灯の側断
面図であり第２図と同一部分には同一符号を付し
て説明を省略する。 FIG. 1 is a side cross-sectional view of the flat fluorescent lamp according to this embodiment, and the same parts as in FIG. 2 are given the same reference numerals and explanations will be omitted.
本実施例の平面型螢光灯は下側の平板状ガラス
２の内面にアルミニウム膜よりなる反射膜６′が
真空蒸着法により形成されている。この反射膜
６′は紫外線及び可視光線を反射する。更に、こ
の反射膜６′上にはSiO2よりなる透明絶縁膜７が
真空蒸着法により形成されている。この透明絶縁
膜７は反射膜６′と放電々極４，４とを電気的に
絶縁している。従つて、放電々極４，４間の放電
は反射膜６′が存在しない場合と同様に全く正常
に行なわれる。 In the flat fluorescent lamp of this embodiment, a reflective film 6' made of an aluminum film is formed on the inner surface of the lower flat glass 2 by vacuum evaporation. This reflective film 6' reflects ultraviolet rays and visible rays. Further, on this reflective film 6', a transparent insulating film 7 made of SiO 2 is formed by vacuum evaporation. This transparent insulating film 7 electrically insulates the reflective film 6' and the discharge electrodes 4, 4. Therefore, the discharge between the discharge electrodes 4, 4 occurs completely normally as in the case where the reflective film 6' does not exist.
上述の平面型螢光灯において、螢光膜５は上側
の平板状ガラス１内面にしか形成されていない
が、放電により発生する紫外線は反射膜６′によ
り反射されて螢光膜５を励起するため結局、螢光
膜５は従来の上下平板ガラスの夫々に形成された
各螢光膜よりも高輝度で発光するため、発光量の
総量は従来とほとんど変わらない。しかも、反射
膜６′で反射されて上方へ照射される光が下平板
ガラス２で減衰することがないため、液晶パネル
（図示省略）に対向する面（発光面）側の輝度は
従来例に比べ大幅に向上することになる。 In the flat fluorescent lamp described above, the fluorescent film 5 is formed only on the inner surface of the upper flat glass 1, but the ultraviolet rays generated by the discharge are reflected by the reflective film 6' and excite the fluorescent film 5. As a result, the fluorescent film 5 emits light with higher brightness than the respective fluorescent films formed on the conventional upper and lower flat glass plates, so that the total amount of light emission is almost the same as in the conventional case. Moreover, since the light reflected by the reflective film 6' and irradiated upward is not attenuated by the lower flat glass 2, the brightness on the surface (light-emitting surface) facing the liquid crystal panel (not shown) is the same as that of the conventional example. This will be a significant improvement compared to
(ト) 考案の効果
上述の如く本考案によれば、反射膜を下側の平
板状ガラスの内面に形成して高輝度化を計つても
放電々極間の放電には何ら悪影響を与えることが
ない。また、螢光膜の形成は片面だけでも従来と
同等以上の輝度が得られる。(g) Effects of the invention As described above, according to the invention, even if a reflective film is formed on the inner surface of the lower flat glass to increase brightness, it will not have any adverse effect on the discharge between the discharge electrodes. There is no. Further, even if the fluorescent film is formed on only one side, a brightness equal to or higher than that of the conventional device can be obtained.
第１図は本考案の一実施例における平面型螢光
灯の側断面図、第２図は従来の平面型螢光灯の側
断面図である。
１，２……上下平板状ガラス、４，４……放
電々極、５……螢光膜、６，６′……反射膜、７
……透明絶縁膜。
FIG. 1 is a side sectional view of a flat fluorescent lamp according to an embodiment of the present invention, and FIG. 2 is a side sectional view of a conventional flat fluorescent lamp. 1, 2... Upper and lower flat glass, 4, 4... Discharge electrode, 5... Fluorescent film, 6, 6'... Reflective film, 7
...Transparent insulating film.
Claims (1)
ラスにより構成される平面型螢光灯において、 前記液晶表示パネルが対向する方の平板状ガラ
スの内面に螢光膜を形成し、前記液晶表示パネル
が対向しない方の平板状ガラスの内面に可視光線
及び紫外線を反射する反射膜を形成すると共に、
この反射膜上に透明絶縁膜を形成してなる平面型
螢光灯。[Scope of Claim for Utility Model Registration] In a flat fluorescent lamp composed of a pair of flat glasses disposed opposite to a liquid crystal display panel, a fluorescent film is provided on the inner surface of the flat glass facing the liquid crystal display panel. forming a reflective film that reflects visible light and ultraviolet rays on the inner surface of the flat glass that is not opposed to the liquid crystal display panel;
A flat fluorescent lamp is made by forming a transparent insulating film on this reflective film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13688888U JPH054200Y2 (en) | 1988-10-20 | 1988-10-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13688888U JPH054200Y2 (en) | 1988-10-20 | 1988-10-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0257554U JPH0257554U (en) | 1990-04-25 |
| JPH054200Y2 true JPH054200Y2 (en) | 1993-02-02 |
Family
ID=31397817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13688888U Expired - Lifetime JPH054200Y2 (en) | 1988-10-20 | 1988-10-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH054200Y2 (en) |
-
1988
- 1988-10-20 JP JP13688888U patent/JPH054200Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0257554U (en) | 1990-04-25 |
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