JPH06224474A - Surface light emitting display device - Google Patents

Surface light emitting display device

Info

Publication number
JPH06224474A
JPH06224474A JP5031352A JP3135293A JPH06224474A JP H06224474 A JPH06224474 A JP H06224474A JP 5031352 A JP5031352 A JP 5031352A JP 3135293 A JP3135293 A JP 3135293A JP H06224474 A JPH06224474 A JP H06224474A
Authority
JP
Japan
Prior art keywords
light
light emitting
display device
substrate
emitting display
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
Application number
JP5031352A
Other languages
Japanese (ja)
Inventor
Eiji Osawa
英治 大澤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rohm Co Ltd
Original Assignee
Rohm Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Rohm Co Ltd filed Critical Rohm Co Ltd
Priority to JP5031352A priority Critical patent/JPH06224474A/en
Publication of JPH06224474A publication Critical patent/JPH06224474A/en
Pending legal-status Critical Current

Links

Landscapes

  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Led Device Packages (AREA)

Abstract

PURPOSE:To form a thin overall surface light emitting display device to be used for a back-light of a liquid crystal display device, various surface display with less number of components and a low cost. CONSTITUTION:A circuit pattern is formed on a rear surface of a light transmission board 1 having light scattering properties such as a glass epoxy board, etc., and a light emitting element 2 is connected to be mounted on the pattern in an attitude in which its light emitting part 2a is directed toward the rear surface of the board.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は、液晶表示装置のバック
ライトや、各種の面表示に利用する面発光表示装置に関
する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a backlight of a liquid crystal display device and a surface emitting display device used for various surface displays.

【0002】[0002]

【従来の技術】従来の面発光表示装置Bとしては、図6
に示すように、白色樹脂で成形した中抜き矩形の反射器
10の底に、適当数のチップ型発光ダイオード素子(L
ED)11を装着した基板12を配備するとともに、反
射器10の表面にポリエステルフィルム等からなる拡散
シート13を張設し、発光ダイオード素子11からの光
を拡散シート13で拡散してシート面全体を発光させる
ように構成したものがある。
2. Description of the Related Art As a conventional surface emitting display B, FIG.
As shown in FIG. 3, an appropriate number of chip type light emitting diode elements (L
ED) 11 is mounted on the substrate 12, a diffusion sheet 13 made of polyester film or the like is stretched on the surface of the reflector 10, and the light from the light emitting diode element 11 is diffused by the diffusion sheet 13 to cover the entire sheet surface. There is one configured to emit light.

【0003】また、図7に示すように、白色の表面を有
する基板14上に、周側面を白色塗料で着色遮光したア
クリル板製のライトガイド15を積層配備し、ライトガ
イド15の一側端面に形成した複数個の穴16に、ドー
ム状レンズ部を有する発光ダイオードランプ17を挿入
し、各発光ダイオードランプ17からの光をライトガイ
ド15を介して基板表面に導いて、その光でライトガイ
ド15の表面全体を発光させるように構成したものが知
られている。
Further, as shown in FIG. 7, a light guide 15 made of an acrylic plate whose peripheral side surface is colored and shielded with white paint is laminated on a substrate 14 having a white surface, and one end face of the light guide 15 is arranged. The light emitting diode lamps 17 each having a dome-shaped lens portion are inserted into the plurality of holes 16 formed in the above, and the light from each light emitting diode lamp 17 is guided to the substrate surface through the light guide 15, and the light guides the light. It is known that the entire surface of 15 is made to emit light.

【0004】[0004]

【発明が解決しようとする課題】しかし、前者の面発光
表示装置Bにおいては、発光ダイオード素子11と拡散
シート13との距離が小さいと発光ダイオード素子11
の対向部位が局部的に強く発光することになるので、拡
散シート13を均一に発光させるには発光ダイオード素
子11と拡散シート13との距離をある程度大きくとる
必要がある。そのために面発光表示装置B全体の厚さが
大きい(約6mm)ものになっていた。もちろん、発光
素子11を数多く分散配備すれば厚さを小さくしながら
均一な発光を期待することはできるのであるが、この場
合はコスト高になるという不具合がある。
However, in the former surface-emitting display device B, when the distance between the light emitting diode element 11 and the diffusion sheet 13 is small, the light emitting diode element 11 is formed.
Since the opposing portion of the above will locally strongly emit light, it is necessary to increase the distance between the light emitting diode element 11 and the diffusion sheet 13 to some extent in order to make the diffusion sheet 13 uniformly emit light. Therefore, the thickness of the entire surface emitting display B is large (about 6 mm). Of course, if a large number of light emitting elements 11 are distributed and arranged, it is possible to expect uniform light emission while reducing the thickness, but in this case, there is a disadvantage that the cost becomes high.

【0005】また、後者の面発光表示装置Bにおいて
は、ライトガイド15の厚さを発光ダイオードランプ1
7の外径よりも大きくする必要性から、これも全体厚さ
が大きい(約8mm)ものになっていた。
In the latter surface-emitting display device B, the thickness of the light guide 15 is set to the light emitting diode lamp 1.
Since it was necessary to make the diameter larger than the outer diameter of No. 7, the total thickness was also large (about 8 mm).

【0006】また、上述した何れの面発光表示装置Bに
おいても、発光素子を実装するための基板と、発光素子
から照射された光を発光面に導く反射器やライトガイド
等が必要であるので、面発光表示装置の構成部品が多く
なるという不具合がある。
Further, in any of the above surface emitting display devices B, a substrate for mounting the light emitting element, a reflector and a light guide for guiding the light emitted from the light emitting element to the light emitting surface are required. However, there is a problem that the number of components of the surface emitting display device increases.

【0007】本発明は、このような実情に鑑みてなされ
たものであって、部品点数少なく安価に製作できるもの
でありながら、全体を薄く構成することのできる面発光
表示装置を提供することを目的とする。
The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a surface emitting display device which has a small number of parts and can be manufactured at low cost, but which can be made thin as a whole. To aim.

【0008】[0008]

【課題を解決するための手段】上記目的を達成するため
に、本発明は次のような構成を採る。すなわち、本発明
に係る面発光表示装置は、光散乱性を有する透光性基板
の裏面に回路パターンを形成し、その回路パターンに発
光素子をその発光部が基板裏面に向かう姿勢で接続装着
してあることを特徴とする。
In order to achieve the above object, the present invention has the following constitution. That is, in the surface-emitting display device according to the present invention, a circuit pattern is formed on the back surface of a translucent substrate having a light-scattering property, and a light-emitting element is connected and attached to the circuit pattern with its light emitting portion facing the back surface of the substrate. It is characterized by being present.

【0009】[0009]

【作用】上記構成によると、発光素子からの光は透光性
基板の裏面から内部に進入して散乱し、透光性基板の表
面全体が発光する。この際、透光性基板は発光素子を支
持するとともに、これへの給電回路を備えた基板である
とともに、発光板としての機能を発揮する。
According to the above structure, the light from the light emitting element enters inside from the back surface of the transparent substrate and is scattered, and the entire surface of the transparent substrate emits light. At this time, the translucent substrate supports the light emitting element, is a substrate provided with a power supply circuit for the light emitting element, and exhibits a function as a light emitting plate.

【0010】[0010]

【実施例】以下、図面を参照して本発明の実施例を説明
する。図1および図2に、本発明を液晶表示装置(LC
D)のバックライトに利用した一例を示す。この面発光
表示装置Aは、光散乱性を有する透光性基板としての例
えば、ガラスエポキシ基板1の裏面に適当数の発光ダイ
オード素子2を並列装備した構造となっている。
Embodiments of the present invention will be described below with reference to the drawings. 1 and 2, the present invention is applied to a liquid crystal display device (LC
An example used for the backlight of D) is shown. The surface-emitting display device A has a structure in which an appropriate number of light-emitting diode elements 2 are mounted in parallel on the back surface of a glass epoxy substrate 1, which is a light-transmitting substrate having a light-scattering property.

【0011】前記発光ダイオード素子2としては、パッ
ケージ本体の側面にレンズ部が形成された、いわる側面
発光型のものが使用され、ガラスエポキシ基板1の裏面
に形成されたプリント回路(図示せず)に、その発光部
2aが基板裏面に向かう姿勢でハンダ付け固定されてい
る。
As the light emitting diode element 2, a side light emitting type in which a lens portion is formed on the side surface of the package body is used, and a printed circuit (not shown) formed on the back surface of the glass epoxy substrate 1 is used. ), The light emitting portion 2a is fixed by soldering in a posture toward the back surface of the substrate.

【0012】この面発光表示装置Aによれば、ガラスエ
ポキシ基板1のプリント回路を介して給電された各発光
ダイオード素子2が発光し、発光部2aから照射された
光が基板1内へ入射する。ガラスエポキシ基板1は、そ
の内部にガラス繊維が混在しているので、これが光散乱
材の働きをし、入射した光は基板1内で散乱する。基板
1内で散乱した光は、基板1の表面から出射して、基板
1の表面全体を発光させる。
According to this surface emitting display device A, each light emitting diode element 2 supplied with power through the printed circuit of the glass epoxy substrate 1 emits light, and the light emitted from the light emitting portion 2a enters into the substrate 1. . Since the glass epoxy substrate 1 has glass fibers mixed therein, this acts as a light scattering material, and the incident light is scattered in the substrate 1. The light scattered in the substrate 1 is emitted from the surface of the substrate 1 to cause the entire surface of the substrate 1 to emit light.

【0013】図3および図4に、本発明をキー照光式リ
モコンのバックライトに適用した一例を示す。この場合
の面発光表示装置Aは、ガラスエポキシ基板1の裏面に
適当数のミニモールド型の発光ダイオード素子2を縦横
に整列配備して、その発光部2aが基板裏面に向かう姿
勢で基板裏面のプリント回路にハンダ付け装着した構造
となっている。
FIGS. 3 and 4 show an example in which the present invention is applied to a backlight of a key-illuminated remote controller. In the surface-emitting display device A in this case, an appropriate number of mini-mold type light emitting diode elements 2 are arranged vertically and horizontally on the back surface of the glass epoxy substrate 1, and the light emitting portion 2a faces the back surface of the substrate. It has a structure that is soldered and attached to the printed circuit.

【0014】なお、上記両実施例において、基板裏面の
プリント回路はレジストで被覆保護しても支障ない。ま
た、ガラスエポキシ基板1の表面の必要発光領域以外の
箇所であればプリント回路やレジストが存在しても支障
はない。
In both of the above embodiments, there is no problem even if the printed circuit on the back surface of the substrate is covered and protected by a resist. In addition, there is no problem even if a printed circuit or a resist is present in a place other than the required light emitting region on the surface of the glass epoxy substrate 1.

【0015】図5は、本発明をデモンストレーシヨン表
示やメッセージ表示を行う面発光表示装置Aに適用した
一実施例を示し、この場合、ガラスエポキシ基板1の表
面(発光面)に遮光性のレジスト3を被着して、各種の
キャラクター4を抜き出し形成して、これらキャラクタ
ー4をガラスエポキシ基板1の発光によって表示させて
使用する。この場合、キャラクター4部分を透光性の塗
料で着色すればカラーフルな発光表示が可能となる。
FIG. 5 shows an embodiment in which the present invention is applied to a surface light emitting display device A for performing demonstration display and message display. In this case, the surface of the glass epoxy substrate 1 (light emitting surface) is provided with a light-shielding resist. 3 is attached, various characters 4 are extracted and formed, and these characters 4 are displayed by the light emission of the glass epoxy substrate 1 for use. In this case, if the character 4 portion is colored with a translucent paint, it is possible to perform colorful light emission display.

【0016】また、上述した各実施例の基板1へは、発
光ダイオード素子2を実装するだけでなく、これらの駆
動用回路素子等を併せて実装してもよい。
Further, not only the light emitting diode element 2 is mounted on the substrate 1 of each of the above-described embodiments, but also these driving circuit elements and the like may be mounted together.

【0017】さらに実施例では、ガラスエポキシ基板を
使用したが、本発明に使用される基板はこれに限らず、
光散乱性を有する透光性基板であれば、各種の基板を使
用することが可能である。
Further, in the embodiment, the glass epoxy substrate is used, but the substrate used in the present invention is not limited to this,
Various substrates can be used as long as they are light-transmitting substrates having a light-scattering property.

【0018】[0018]

【発明の効果】以上の説明から明らかなように、本発明
によれば次のような効果を期待できる。 (1) 発光板としての基板に直接発光素子を装着した
だけであるので、全体を薄くコンパクトに構成すること
が可能となった。
As is apparent from the above description, according to the present invention, the following effects can be expected. (1) Since only the light emitting element is directly mounted on the substrate as the light emitting plate, the whole structure can be made thin and compact.

【0019】(2) 発光素子を支持する基板自体を発
光板としての機能を与える構成としたので、専用の反射
器やライトガイド等を必要とすることなく、少ない部品
点数で安価に面発光表示装置を製作することができるよ
うになった。
(2) Since the substrate itself supporting the light emitting element is configured to provide the function as a light emitting plate, a dedicated reflector or light guide is not required, and the surface emitting display is inexpensive with a small number of parts. The device can now be manufactured.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明に係る面発光表示装置の一実施例を示す
一部切り欠き斜視図である。
FIG. 1 is a partially cutaway perspective view showing an embodiment of a surface emitting display device according to the present invention.

【図2】その側面図である。FIG. 2 is a side view thereof.

【図3】他の実施例の一部切り欠き斜視図である。FIG. 3 is a partially cutaway perspective view of another embodiment.

【図4】その側面図である。FIG. 4 is a side view thereof.

【図5】変形例の斜視図である。FIG. 5 is a perspective view of a modified example.

【図6】従来例の一部切り欠き斜視図である。FIG. 6 is a partially cutaway perspective view of a conventional example.

【図7】他の従来例の斜視図である。FIG. 7 is a perspective view of another conventional example.

【符号の説明】[Explanation of symbols]

1…ガラスエポキシ基板 2…発光ダイオード素子 2a…発光部 1 ... Glass epoxy substrate 2 ... Light emitting diode element 2a ... Light emitting part

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 光散乱性を有する透光性基板の裏面に、
回路パターンを形成し、その回路パターンに発光素子を
その発光部が基板裏面に向かう姿勢で接続装着してある
ことを特徴とする面発光表示装置。
1. A back surface of a light-transmitting substrate having a light-scattering property,
A surface-emitting display device, characterized in that a circuit pattern is formed, and a light-emitting element is connected and attached to the circuit pattern such that the light-emitting portion faces the back surface of the substrate.
JP5031352A 1993-01-26 1993-01-26 Surface light emitting display device Pending JPH06224474A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5031352A JPH06224474A (en) 1993-01-26 1993-01-26 Surface light emitting display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5031352A JPH06224474A (en) 1993-01-26 1993-01-26 Surface light emitting display device

Publications (1)

Publication Number Publication Date
JPH06224474A true JPH06224474A (en) 1994-08-12

Family

ID=12328841

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5031352A Pending JPH06224474A (en) 1993-01-26 1993-01-26 Surface light emitting display device

Country Status (1)

Country Link
JP (1) JPH06224474A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002091487A1 (en) * 2001-05-02 2002-11-14 Kansai Technology Licensing Organization Co., Ltd. Light emitting apparatus
WO2006011525A1 (en) * 2004-07-28 2006-02-02 Sharp Kabushiki Kaisha Light-emitting module and light-emitting system
JP2008212163A (en) * 2007-02-28 2008-09-18 Daiichi Shokai Co Ltd Pachinko game machine
JP4928013B1 (en) * 2010-12-28 2012-05-09 パナソニック株式会社 Light emitting device, light emitting module and lamp
WO2012090356A1 (en) * 2010-12-28 2012-07-05 パナソニック株式会社 Light-emitting device, light-emitting module, and lamp

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002091487A1 (en) * 2001-05-02 2002-11-14 Kansai Technology Licensing Organization Co., Ltd. Light emitting apparatus
WO2006011525A1 (en) * 2004-07-28 2006-02-02 Sharp Kabushiki Kaisha Light-emitting module and light-emitting system
US7641357B2 (en) 2004-07-28 2010-01-05 Sharp Kabushiki Kaisha Light-emitting module and light-emitting system
JP2008212163A (en) * 2007-02-28 2008-09-18 Daiichi Shokai Co Ltd Pachinko game machine
JP4928013B1 (en) * 2010-12-28 2012-05-09 パナソニック株式会社 Light emitting device, light emitting module and lamp
WO2012090356A1 (en) * 2010-12-28 2012-07-05 パナソニック株式会社 Light-emitting device, light-emitting module, and lamp
US8587011B2 (en) 2010-12-28 2013-11-19 Panasonic Corporation Light-emitting device, light-emitting module, and lamp

Similar Documents

Publication Publication Date Title
US6007209A (en) Light source for backlighting
KR101110470B1 (en) Backlighting device for an information display element of a portable object
JP2006286638A (en) Light emitting device having a plurality of light guide plates adjoining each other and overlapping
KR850003237A (en) LCD liquid crystal display device
KR20120031268A (en) Lighting device
US7793448B1 (en) Display module and illumination sign device using the same
CN112201739B (en) Light-emitting structure, backlight module, display module and display device
JP3506021B2 (en) Surface lighting device and display device using this surface lighting device
EP2333592A2 (en) Backlight unit and display device using same
KR100425657B1 (en) Surface light-source device
JPH05289076A (en) Liquid crystal display device
TW200532316A (en) Backlight module of direct type point light source and liquid crystal display device using the same
KR20030081971A (en) Backlight Unit And Method Of Fabricating A Reflecting Plate Thereof
KR930002926B1 (en) Panel light emitting devices
US5046829A (en) Liquid crystal display backlighting apparatus having combined optical diffuser and shock dampening properties
JPH06224474A (en) Surface light emitting display device
JP3028465B2 (en) Surface-emitting lighting device
JP2008098190A (en) Surface-emitting light source
JP4366682B2 (en) Liquid crystal display
JP3246359B2 (en) Display device
KR19990003536A (en) Backlight Unit of Liquid Crystal Display
JP3206163B2 (en) Backlight unit and display device using the same
KR20200133087A (en) Backlight unit having hole pattern reflect sheet
JP2003141918A (en) Plane light source device
JPH09105935A (en) Liquid crystal display device