JPH04303885A - Edge light system plane emitter - Google Patents
Edge light system plane emitterInfo
- Publication number
- JPH04303885A JPH04303885A JP3093774A JP9377491A JPH04303885A JP H04303885 A JPH04303885 A JP H04303885A JP 3093774 A JP3093774 A JP 3093774A JP 9377491 A JP9377491 A JP 9377491A JP H04303885 A JPH04303885 A JP H04303885A
- Authority
- JP
- Japan
- Prior art keywords
- light source
- light
- silver vapor
- cover plate
- film
- 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
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910052709 silver Inorganic materials 0.000 claims abstract description 31
- 239000004332 silver Substances 0.000 claims abstract description 31
- 238000007740 vapor deposition Methods 0.000 claims abstract description 8
- 229920005989 resin Polymers 0.000 claims description 14
- 239000011347 resin Substances 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 5
- -1 polyethylene terephthalate Polymers 0.000 abstract description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 abstract description 2
- 239000005020 polyethylene terephthalate Substances 0.000 abstract description 2
- 239000004820 Pressure-sensitive adhesive Substances 0.000 abstract 1
- 238000000151 deposition Methods 0.000 abstract 1
- 238000000465 moulding Methods 0.000 abstract 1
- 239000010408 film Substances 0.000 description 21
- 239000010410 layer Substances 0.000 description 14
- 239000002985 plastic film Substances 0.000 description 4
- 229920006255 plastic film Polymers 0.000 description 4
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 2
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000012790 adhesive layer Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
Landscapes
- Liquid Crystal (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、ディスプレイとして薄
形の電飾照明、および薄形軽量のラップトップパソコン
、ワープロ、液晶ＴＶのバックライトなどに利用できる
エッジライト方式面発光装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an edge-light surface emitting device which can be used as a display for thin electric lighting, thin and lightweight laptop computers, word processors, backlights for liquid crystal TVs, and the like.
【０００２】0002
【従来の技術】エッジライト方式面発光装置は、透明導
光板の側面に光源が配置され、光源からの光で透明導光
板を照明するものである。従来、湾曲反射板が光源を覆
うように透明導光板の側端部に嵌め合わされて、湾曲反
射板内面の鏡面により面光源からの光を透明導光板側に
反射して光を有効に使えるようしていた。湾曲反射板と
しては、アルミニム板などの金属製の光源覆板やＡＢＳ
樹脂などの隠蔽性の高い樹脂製の光源覆板（図３参照）
、または銀蒸着フィルム（図４参照）を用いていた。2. Description of the Related Art In an edge-light type surface emitting device, a light source is arranged on the side surface of a transparent light guide plate, and the transparent light guide plate is illuminated with light from the light source. Conventionally, a curved reflector was fitted onto the side edge of a transparent light guide plate so as to cover the light source, and the mirror surface on the inner surface of the curved reflector reflected light from the surface light source toward the transparent light guide plate, allowing the light to be used effectively. Was. As a curved reflector, a metal light source cover plate such as an aluminum plate or ABS can be used.
Light source cover plate made of highly concealable resin such as resin (see Figure 3)
, or a silver-deposited film (see FIG. 4).
【０００３】0003
【発明が解決しようとする課題】しかし、湾曲反射板と
して銀蒸着フィルムを用いた面発光装置は、銀蒸着層が
薄膜であるため隠蔽性が弱く、フィルムを透過する光が
あり光ロスがあった。また、湾曲反射板を一定形状に保
持するために、銀蒸着フィルムを透明導光板と光源とで
固定しなければならず、光源と銀蒸着フィルムとの接触
部分では光源の光の反射がおこなわれず面発光装置の輝
度が低かった。[Problems to be Solved by the Invention] However, surface-emitting devices using a silver vapor-deposited film as a curved reflector have weak hiding properties because the silver vapor-deposited layer is a thin film, and some light passes through the film, resulting in light loss. Ta. In addition, in order to hold the curved reflector in a certain shape, the silver deposited film must be fixed between the transparent light guide plate and the light source, and the light from the light source is not reflected at the contact area between the light source and the silver deposited film. The brightness of the surface emitting device was low.
【０００４】一方、湾曲反射板として光源覆板を用いた
面発光装置は、光源覆板が隠蔽性が強く光源とも接触し
ない。しかし、高反射率を有する銀板を価格の点から用
いることができず金属製の光源覆板やＡＢＳ樹脂などの
隠蔽性の高い樹脂製の光源覆板のように反射率の低いも
のが用いられるため高輝度が得られなかった。On the other hand, in a surface emitting device using a light source cover plate as a curved reflector, the light source cover plate has strong hiding properties and does not come into contact with the light source. However, it is not possible to use a silver plate with a high reflectance due to the cost, so a light source cover plate with a low reflectance such as a metal light source cover plate or a light source cover plate made of a resin with high hiding properties such as ABS resin is used. High brightness could not be obtained because of the
【０００５】本発明は、以上のような問題点を解決し、
光のロスがなく高輝度であるエッジライト方式面発光装
置を提供することを目的とする。[0005] The present invention solves the above problems,
An object of the present invention is to provide an edge-light type surface-emitting device that has high brightness without light loss.
【０００６】[0006]
【課題を解決するための手段】上記の目的を達成するた
めに、本発明のエッジライト方式面発光装置は[Means for Solving the Problems] In order to achieve the above object, an edge light type surface emitting device of the present invention is provided.
【０００
７】以下、本発明を図を用いてさらに詳しく説明する。
図１は本発明の面発光装置の一実施例を示す断面図、図
２は本発明の面発光装置の他の実施例を示す断面図であ
る。１は透明導光板、２は光源、３は光源覆板、４は銀
蒸着フィルム、５はコーティング膜、６はプラスチック
フィルム、７は銀蒸着層をそれぞれ示す。000
7] The present invention will be explained in more detail below with reference to the drawings. FIG. 1 is a sectional view showing one embodiment of the surface emitting device of the present invention, and FIG. 2 is a sectional view showing another embodiment of the surface emitting device of the present invention. 1 is a transparent light guide plate, 2 is a light source, 3 is a light source cover plate, 4 is a silver vapor deposited film, 5 is a coating film, 6 is a plastic film, and 7 is a silver vapor deposited layer.
【０００８】光源覆板３は、樋状に成形され透明導光板
１の側面に配置される光源２を覆いかつ光源２と接しな
いように透明導光板１の側端部に嵌め合わされている（
図１、図２参照）。光源覆板３は、銀蒸着層７を通過し
た光を透明導光板１側に反射して銀蒸着層７の反射にお
ける光ロスを著しく小さくするようにしている。光源覆
板３の材質としては、一般に金属や隠蔽性の高い樹脂が
用いられている。たとえば、金属としては、ステンレス
などの合金、アルミニウム、鉄、ニッケルなどがあり、
隠蔽性の高い樹脂としては、アクリルニトリルブタジエ
ンスチレン樹脂、ポリスチレン樹脂、ポリプロピレン樹
脂、ナイロン樹脂、エンジニアリングプラスチック樹脂
などがある。The light source cover plate 3 is formed into a gutter shape and is fitted to the side end of the transparent light guide plate 1 so as to cover the light source 2 disposed on the side surface of the transparent light guide plate 1 and not come into contact with the light source 2 (
(See Figures 1 and 2). The light source cover plate 3 reflects the light that has passed through the silver vapor deposited layer 7 toward the transparent light guide plate 1 side, thereby significantly reducing the light loss due to reflection from the silver vapor deposited layer 7. As the material of the light source cover plate 3, metal or resin with high hiding power is generally used. For example, metals include alloys such as stainless steel, aluminum, iron, nickel, etc.
Examples of resins with high hiding properties include acrylonitrile butadiene styrene resin, polystyrene resin, polypropylene resin, nylon resin, and engineering plastic resin.
【０００９】銀蒸着フィルム４は、プラスチックフィル
ム６上に銀蒸着層７が形成されており、銀蒸着フィルム
４の銀蒸着層７側を内側にして光源覆板３の内表面に密
着させて光源覆板３を覆っており、光源２からの光を透
明導光板１側に反射して光を有効に使えるようにしてい
る（図１参照）。The silver vapor-deposited film 4 has a silver vapor-deposited layer 7 formed on a plastic film 6, and the silver vapor-deposited film 4 is brought into close contact with the inner surface of the light source cover plate 3 with the silver vapor-deposited layer 7 side facing inside to form a light source. It covers the cover plate 3 and reflects the light from the light source 2 toward the transparent light guide plate 1 side so that the light can be used effectively (see FIG. 1).
【００１０】また、光源覆板３と銀蒸着フィルム４とは
、接着剤層を介して一体化されていてもよい。このとき
、光源覆板３が樋状に成形される前に銀蒸着フィルム４
と一体化されてもよいし、光源覆板３が樋状に成形され
ると同時にあるいは光源覆板３が樋状に成形された後に
銀蒸着フィルム４と一体化されてもよい。[0010] Furthermore, the light source cover plate 3 and the silver vapor deposited film 4 may be integrated via an adhesive layer. At this time, before the light source cover plate 3 is formed into a gutter shape, the silver vapor-deposited film 4 is
Alternatively, the light source cover plate 3 may be integrated with the silver-deposited film 4 at the same time as the light source cover plate 3 is formed into a gutter shape, or after the light source cover plate 3 is formed into a gutter shape.
【００１１】また、銀蒸着フィルム４で光源覆板３の内
表面を覆う代わりに、光源覆板３内表面に銀蒸着層７を
形成した後、その上に保護層として樹脂のコーティング
膜５を形成してもよい（図２参照）。このとき、光源覆
板３が樋状に成形される前に各層が形成されてもよいし
、光源覆板３が樋状に成形された後に各層が形成されて
もよい。Furthermore, instead of covering the inner surface of the light source cover plate 3 with the silver vapor deposition film 4, after forming the silver vapor deposition layer 7 on the inner surface of the light source cover plate 3, a resin coating film 5 is applied as a protective layer thereon. (See FIG. 2). At this time, each layer may be formed before the light source cover plate 3 is formed into a gutter shape, or each layer may be formed after the light source cover plate 3 is formed into a gutter shape.
【００１２】0012
【実施例】３８μｍのポリエチレンテレフタレート樹脂
のプラスチックフィルム６に銀蒸着を施して銀蒸着層７
を設けた高反射フィルム４を蒸着面を内側にして、厚さ
０．４ｍｍのアルミニウム板に両面テープにて貼り合わ
せ、その後高反射フィルム４を内側して樋状に成形加工
し、その内表面が高反射フィルム４で密着して覆われて
いる光源覆板３を作製した。[Example] Silver vapor deposition is performed on a 38 μm polyethylene terephthalate resin plastic film 6 to form a silver vapor deposition layer 7.
The high-reflection film 4 with the vapor-deposited side facing inside is attached to an aluminum plate with a thickness of 0.4 mm using double-sided tape.Then, the high-reflection film 4 is placed inside and formed into a gutter shape, and the inner surface A light source cover plate 3 was produced in which the light source cover plate 3 was closely covered with a high reflection film 4.
【００１３】この樋状の光源覆板３を光源２を覆いかつ
光源２と接しないように透明導光板１の側端部に嵌め合
わすと、湾曲反射板を従来のアルミニウム製の光源覆板
３のみにした場合に得られる輝度が１４０００ｃｄ／ｍ
２であるのに対し、光のロスがなく３００００ｃｄ／ｍ
２の高輝度が得られた。When this gutter-shaped light source cover plate 3 is fitted to the side end of the transparent light guide plate 1 so as to cover the light source 2 and not come into contact with the light source 2, the curved reflector plate can be replaced with the conventional aluminum light source cover plate 3. The brightness obtained when using only 14000 cd/m
2, there is no light loss and it is 30,000 cd/m.
2 high brightness was obtained.
【００１４】[0014]
【発明の効果】本発明のエッジライト方式面発光装置は
、、透明導光板の側面に光源が配置され光源を覆いかつ
光源と接しないように透明導光板の側端部に嵌め合わさ
れる金属製または隠蔽性の高い樹脂製の樋状の光源覆板
を備えたエッジライト方式面発光装置において、光源覆
板の内表面が銀蒸着フィルムで密着して覆われているよ
うに構成した。また、本発明のエッジライト方式面発光
装置は、透明導光板の側面に光源が配置され光源を覆い
かつ光源と接しないように透明導光板の側端部に嵌め合
わされる金属製または隠蔽性の高い樹脂製の樋状の光源
覆板を備えたエッジライト方式面発光装置において、光
源覆板の内表面に銀蒸着層、コーティング膜が順次形成
されているように構成した。Effects of the Invention The edge-light type surface emitting device of the present invention has a light source disposed on the side surface of a transparent light guide plate, and is made of metal that is fitted to the side edge of the transparent light guide plate so as to cover the light source and not come in contact with the light source. Alternatively, in an edge-light type surface emitting device equipped with a gutter-shaped light source cover plate made of a resin with high concealability, the inner surface of the light source cover plate is closely covered with a silver vapor-deposited film. In addition, the edge-light type surface emitting device of the present invention has a light source arranged on the side surface of the transparent light guide plate, and a metal or concealable light source that is fitted to the side edge of the transparent light guide plate so as to cover the light source and not come in contact with the light source. In an edge-light type surface emitting device equipped with a gutter-like light source cover plate made of tall resin, a silver vapor deposition layer and a coating film are sequentially formed on the inner surface of the light source cover plate.
【００１５】したがって、銀蒸着層が光源を覆うように
配置されているので反射率が高く、しかも銀蒸着層裏面
に光源覆板がありかつ湾曲反射板と光源とが接触してい
ないために光ロスのない反射が得られて輝度が３０〜５
０％向上する。Therefore, since the silver vapor deposited layer is arranged to cover the light source, the reflectance is high, and since there is a light source covering plate on the back side of the silver vapor deposited layer and the curved reflector and the light source are not in contact with each other, the light Loss-free reflection is obtained and the brightness is 30-5.
Improved by 0%.
【図１】本発明のエッジライト方式面発光装置の一実施
例を示す断面図である。FIG. 1 is a sectional view showing an embodiment of an edge-light type surface emitting device of the present invention.
【図２】本発明のエッジライト方式面発光装置の他の実
施例を示す断面図である。FIG. 2 is a sectional view showing another embodiment of the edge-light type surface emitting device of the present invention.
【図３】従来のエッジライト方式面発光装置の一実施例
を示す断面図である。FIG. 3 is a sectional view showing an example of a conventional edge-light surface emitting device.
【図４】従来のエッジライト方式面発光装置の他の実施
例を示す断面図である。FIG. 4 is a sectional view showing another embodiment of a conventional edge-light type surface emitting device.
１ 透明導光板 ２ 光源 ３ 光源覆板 ４ 銀蒸着フィルム ５ コーティング膜 ６ プラスチックフィルム ７ 銀蒸着層 1 Transparent light guide plate 2. Light source 3 Light source cover plate 4 Silver vapor deposited film 5 Coating film 6 Plastic film 7 Silver vapor deposition layer
Claims (2)
源を覆いかつ光源と接しないように透明導光板の側端部
に嵌め合わされる金属製または隠蔽性の高い樹脂製の樋
状の光源覆板を備えたエッジライト方式面発光装置にお
いて、光源覆板の内表面が銀蒸着フィルムで密着して覆
われていることを特徴とするエッジライト方式面発光装
置。Claim 1: A gutter-shaped light source made of metal or resin with high concealment properties, with a light source disposed on the side surface of the transparent light guide plate, which is fitted to the side edge of the transparent light guide plate so as to cover the light source and not come into contact with the light source. An edge-light type surface-emitting device including a cover plate, wherein the inner surface of the light source cover plate is tightly covered with a silver vapor-deposited film.
源を覆いかつ光源と接しないように透明導光板の側端部
に嵌め合わされる金属製または隠蔽性の高い樹脂製の樋
状の光源覆板を備えたエッジライト方式面発光装置にお
いて、光源覆板の内表面に銀蒸着層、コーティング膜が
順次形成されていることを特徴とするエッジライト方式
面発光装置。2. A gutter-shaped light source made of metal or highly concealable resin that has a light source arranged on the side surface of the transparent light guide plate and is fitted to the side end of the transparent light guide plate so as to cover the light source and not come into contact with the light source. An edge-light type surface-emitting device comprising a cover plate, characterized in that a silver vapor deposition layer and a coating film are successively formed on the inner surface of the light source cover plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3093774A JPH04303885A (en) | 1991-03-29 | 1991-03-29 | Edge light system plane emitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3093774A JPH04303885A (en) | 1991-03-29 | 1991-03-29 | Edge light system plane emitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04303885A true JPH04303885A (en) | 1992-10-27 |
Family
ID=14091772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3093774A Pending JPH04303885A (en) | 1991-03-29 | 1991-03-29 | Edge light system plane emitter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04303885A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05100225A (en) * | 1991-10-09 | 1993-04-23 | Tosoh Corp | Back light for panel |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60205575A (en) * | 1984-03-30 | 1985-10-17 | 精工技研株式会社 | Illumination display body |
-
1991
- 1991-03-29 JP JP3093774A patent/JPH04303885A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60205575A (en) * | 1984-03-30 | 1985-10-17 | 精工技研株式会社 | Illumination display body |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05100225A (en) * | 1991-10-09 | 1993-04-23 | Tosoh Corp | Back light for panel |
| JP2624059B2 (en) * | 1991-10-09 | 1997-06-25 | 東ソー株式会社 | Backlight for panel |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A02 | Decision of refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A02 Effective date: 19960220 |