JPS6129884A - Lighting apparatus for liquid crystal display - Google Patents
Lighting apparatus for liquid crystal displayInfo
- Publication number
- JPS6129884A JPS6129884A JP15240584A JP15240584A JPS6129884A JP S6129884 A JPS6129884 A JP S6129884A JP 15240584 A JP15240584 A JP 15240584A JP 15240584 A JP15240584 A JP 15240584A JP S6129884 A JPS6129884 A JP S6129884A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal display
- guide plate
- light guide
- lighting apparatus
- 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
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Liquid Crystal (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 産業上の利用分野 本発明は液晶表示器の照明装置に関する。[Detailed description of the invention] Industrial applications The present invention relates to a lighting device for a liquid crystal display.
従来例の構成とその問題点
液晶表示器は非発光素子であるため、暗所では照明が必
要で、従来、第１図に示すように、透過型液晶表示器１
の背面にアクリル等からなる導光板２を配置し、導光板
２の内部に照明用ランプ３を設け、さらに導光板２の下
面（液晶表示器と反対側の而）にＡ／等で反射層４を形
成していた。Structure of conventional example and its problems Since the liquid crystal display is a non-light emitting element, illumination is required in dark places. Conventionally, as shown in FIG.
A light guide plate 2 made of acrylic or the like is placed on the back of the light guide plate 2, an illumination lamp 3 is provided inside the light guide plate 2, and a reflective layer is placed on the bottom surface of the light guide plate 2 (on the side opposite to the liquid crystal display) using A/, etc. It formed 4.
このような構成で、照明用ランプ３の光を反射層４で反
射、散乱させ液晶表示器１全体を照明していたが、この
手段では導光板の周辺から外部へ出ていく光が多く、照
光効率が悪かった。With such a configuration, the light from the illumination lamp 3 is reflected and scattered by the reflective layer 4 to illuminate the entire liquid crystal display 1, but with this method, much of the light exits from the periphery of the light guide plate to the outside. Lighting efficiency was poor.
発明の目的
本発明はかかる従来の問題を解消するもので外に出る光
を内部に反射させ、照明効率を上げることを目的とする
。OBJECTS OF THE INVENTION The present invention solves these conventional problems, and aims to improve illumination efficiency by reflecting light emitted from the outside into the interior.
発明の構成
この目的を達成するために、本発明は導光板の周囲に液
晶表示器の表示部を除いてＡ１等による反射層を形成し
、光の漏れをなくして照明効率を上げるものである。Structure of the Invention In order to achieve this object, the present invention forms a reflective layer such as A1 around the light guide plate except for the display part of the liquid crystal display, thereby eliminating light leakage and increasing illumination efficiency. .
実施例の説明
以下、本発明の一実施例を第２図、第３図を用いて説明
する。第２図において液晶表示器５の背面に導光板６を
配置し、導光板６の内部に照明用ランプ７を設けるとと
もに、導光板６の周囲に液晶表示器５の表示部を除いて
Ａ／等で反射層８を形成している。このため照明用ラン
プ７から発せられる光は反射層８で反射、散乱され表示
部だけに出ていくので明るい照明が得られる。第３図は
３く；會
導光板６の斜視図で、この導光板６の周囲に反射層８が
形成され、液晶表示器の表示部分９だけが窓がおいて光
が出てくる。DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 2 and 3. In FIG. 2, a light guide plate 6 is disposed on the back side of the liquid crystal display 5, an illumination lamp 7 is provided inside the light guide plate 6, and an A/D display is provided around the light guide plate 6 excluding the display part of the liquid crystal display 5. The reflective layer 8 is formed by the following. Therefore, the light emitted from the illumination lamp 7 is reflected and scattered by the reflective layer 8 and exits only to the display section, resulting in bright illumination. FIG. 3 is a perspective view of the light guide plate 6. A reflective layer 8 is formed around the light guide plate 6, and only the display portion 9 of the liquid crystal display has a window so that light can come out.
発明の効果
以」二のように本発明の液晶表示器の照明装置によれば
次のような効果が得られる。Effects of the Invention As described in section 2, the lighting device for a liquid crystal display of the present invention provides the following effects.
（１）照明効率が向上し、液晶表示部が一層明るくなる
。(1) Illumination efficiency is improved and the liquid crystal display becomes brighter.
（２）透過形液晶で、特にネガタイプの液晶表示の場合
、表示部分以外には照明がなくなるので、全体としてコ
ントラストが向上する。(2) In the case of a transmissive liquid crystal display, especially a negative type liquid crystal display, since there is no illumination other than the display area, the overall contrast is improved.
第１図は従来の液晶表示器の照明装置の断面図、第２図
１弓本発明の一実施例による液晶表示器の照明装置の断
面図、第３図は同照明装置の導光板の斜視図である。
５・・・・液晶表示器、６・・・・導光板、７・・・・
照明用ランプ、８・・・・反射層、９・・・・表示部用
窓。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名第１
図
第２図
第３図FIG. 1 is a cross-sectional view of a conventional lighting device for a liquid crystal display, FIG. 2 is a cross-sectional view of a lighting device for a liquid crystal display according to an embodiment of the present invention, and FIG. 3 is a perspective view of a light guide plate of the lighting device. It is a diagram. 5...Liquid crystal display, 6...Light guide plate, 7...
Illumination lamp, 8...Reflection layer, 9...Display window. Name of agent: Patent attorney Toshio Nakao and 1 other person 1st
Figure 2 Figure 3
Claims (1)
を設けるとともに、前記透過型液晶表示器の表示部分を
除いて周囲全面に反射層を形成した導光板からなる液晶
表示器の照明装置。An illumination device for a liquid crystal display, which is located on the back side of a transmissive liquid crystal display and includes a light guide plate provided with an illumination lamp inside and a reflective layer formed on the entire periphery of the transmissive liquid crystal display except for the display area. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15240584A JPS6129884A (en) | 1984-07-23 | 1984-07-23 | Lighting apparatus for liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15240584A JPS6129884A (en) | 1984-07-23 | 1984-07-23 | Lighting apparatus for liquid crystal display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6129884A true JPS6129884A (en) | 1986-02-10 |
Family
ID=15539788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15240584A Pending JPS6129884A (en) | 1984-07-23 | 1984-07-23 | Lighting apparatus for liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6129884A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0340183U (en) * | 1989-08-22 | 1991-04-17 |
-
1984
- 1984-07-23 JP JP15240584A patent/JPS6129884A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0340183U (en) * | 1989-08-22 | 1991-04-17 |
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