JP2000298276A - Display device - Google Patents
Display deviceInfo
- Publication number
- JP2000298276A JP2000298276A JP11108281A JP10828199A JP2000298276A JP 2000298276 A JP2000298276 A JP 2000298276A JP 11108281 A JP11108281 A JP 11108281A JP 10828199 A JP10828199 A JP 10828199A JP 2000298276 A JP2000298276 A JP 2000298276A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- emitting diode
- crystal cell
- light emitting
- backlight
- 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
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は電子レンジの操作パ
ネル等に用いられる液晶表示装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid crystal display device used for an operation panel of a microwave oven.
【０００２】[0002]
【従来の技術】従来の液晶表示装置は、例えば特開平８
−９５０４３号公報に開示されたように、バックライト
１０１と液晶セル１０２との間に介挿され、前記バック
ライト１０１の光を均一に分散して前記液晶セルへ導
く、液晶表示装置の拡散板１０３において、周縁に遮光
部が形成されていることを特徴とする液晶表示装置があ
る図４及び図５参照）。2. Description of the Related Art A conventional liquid crystal display device is disclosed in
As disclosed in JP-A-95043, a diffusion plate of a liquid crystal display device interposed between a backlight 101 and a liquid crystal cell 102 to uniformly disperse the light of the backlight 101 and guide the light to the liquid crystal cell. 103, there is a liquid crystal display device characterized in that a light shielding portion is formed on the periphery (see FIGS. 4 and 5).
【０００３】係る従来技術の場合、バックライト１０１
から出た光は、拡散板１０３で拡散されることにより、
均一に分散されて、液晶セル１０２へ導かれる。しかし
ながら、液晶セルで表示させる情報量が多くなり、輝度
を上げるためにバックライトの明るさを増大させると、
図４に示すように、バックライトを構成する発光ダイオ
ードの頭頂部の光の強さが周辺に拡散する光よりも極端
に強いため、拡散板１０３の拡散効果が不充分である
と、図５に示すようにバックライトを構成する発光ダイ
オード頭頂部の部分が液晶セル１０２から丸く明るく
（図５のハッチング処理された円を参照）見えてしま
い、液晶セル１０２自身の輝度の均一性が損なわれ、外
観状見栄えが悪いという問題点があった。In the case of the related art, the backlight 101
Is emitted by the diffusion plate 103,
It is uniformly dispersed and guided to the liquid crystal cell 102. However, the amount of information to be displayed on the liquid crystal cell increases, and when the brightness of the backlight is increased to increase the brightness,
As shown in FIG. 4, since the intensity of light at the top of the light emitting diode constituting the backlight is extremely stronger than the light diffused to the periphery, if the diffusion effect of the diffusion plate 103 is insufficient, the light intensity of the light from the light emitting diode shown in FIG. As shown in FIG. 5, the top portion of the light emitting diode constituting the backlight looks round and bright from the liquid crystal cell 102 (see the hatched circle in FIG. 5), and the uniformity of the brightness of the liquid crystal cell 102 itself is impaired. However, there is a problem that appearance appearance is poor.
【０００４】また拡散板１０３を複数枚使えば液晶セル
１０２の輝度の均一化は向上するが、その分コストが嵩
むという不具合がある。When a plurality of diffusion plates 103 are used, the uniformity of the brightness of the liquid crystal cell 102 is improved, but there is a problem that the cost increases accordingly.
【０００５】[0005]
【発明が解決しようとする課題】本発明は上記のような
従来技術に鑑みなされたものであり、高価な拡散シート
の使用を最小限に押さえたまま、液晶セルの輝度の不均
一化を防ぐことを目的とする。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned prior art, and prevents nonuniform brightness of a liquid crystal cell while minimizing the use of an expensive diffusion sheet. The purpose is to.
【０００６】[0006]
【課題を解決するための手段】透過型液晶セルと、該液
晶セルのバックライト用発光ダイオードとよりなり、該
発光ダイオードの頭頂部の略半球状部に白色系の遮光膜
を配置してなる液晶表示装置である。The light-emitting diode comprises a transmissive liquid crystal cell and a light emitting diode for backlight of the liquid crystal cell, and a white light-shielding film is arranged on a substantially hemispherical portion at the top of the light emitting diode. It is a liquid crystal display device.
【０００７】[0007]
【発明の実施の形態】以下本発明の液晶表示装置を電子
レンジの操作パネルに採用する場合の一実施例について
図面に基づき説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the liquid crystal display device of the present invention is applied to an operation panel of a microwave oven will be described below with reference to the drawings.
【０００８】図１は液晶表示装置の取付側面図、図２は
バックライト点灯時の正面図、図３はバックライトを構
成する発光ダイオードの拡大図である。FIG. 1 is a side view showing the mounting of the liquid crystal display device, FIG. 2 is a front view when the backlight is lit, and FIG. 3 is an enlarged view of a light emitting diode constituting the backlight.
【０００９】これらの図において１はＰＣＢ樹脂製の取
付基板、２は該基板に固着されるパーツベース、３は該
パーツベースに取付けられる液晶セル、４は該液晶セル
の裏面側に固着される１枚の拡散シート、５はバックラ
イトを構成する発光ダイオード、６は該発光ダイオード
５の頭頂部の略半球状部に配置（塗布）された光を透過
させない白色系塗料（遮光膜）であり、前記発光ダイオ
ード５は、そのリードを前記基板１に電気接続されてい
る。In these figures, 1 is a mounting board made of PCB resin, 2 is a parts base fixed to the board, 3 is a liquid crystal cell mounted on the parts base, and 4 is fixed to the back side of the liquid crystal cell. One diffusion sheet, 5 is a light-emitting diode constituting a backlight, and 6 is a white paint (light-shielding film) which is disposed (applied) on a substantially hemispherical portion at the top of the light-emitting diode 5 and does not transmit light. The leads of the light emitting diode 5 are electrically connected to the substrate 1.
【００１０】[0010]
【発明の効果】本発明は以上の説明のように構成したこ
とにより、拡散シートが一枚であるにもかかわらず、バ
ックライトの輝度を上げた場合でも発光ダイオードの頭
頂部からの極端に明るい光が液晶セルに直にあたるのを
防止でき、液晶セルの輝度の均一化を図ることができる
効果が期待できる。According to the present invention, as described above, even when the brightness of the backlight is increased, the light emitting diode is extremely bright from the top of the light emitting diode even though the number of the diffusion sheets is one. Light can be prevented from directly hitting the liquid crystal cell, and the effect of making the luminance of the liquid crystal cell uniform can be expected.
【図１】本発明の液晶表示装置の取付側面図である。FIG. 1 is a mounting side view of a liquid crystal display device of the present invention.
【図２】同じく正面図である。FIG. 2 is a front view of the same.
【図３】発光ダイオードの拡大図である。FIG. 3 is an enlarged view of a light emitting diode.
【図４】図１に相当する従来の取付側面図である。FIG. 4 is a side view of a conventional mounting corresponding to FIG.
【図５】図２に相当する従来の正面図である。FIG. 5 is a conventional front view corresponding to FIG. 2;
１ 取付基板 ２ パーツベース ３ 液晶セル ４ 拡散シート ５ 発光ダイオード ６ 白色系塗料 DESCRIPTION OF SYMBOLS 1 Mounting board 2 Parts base 3 Liquid crystal cell 4 Diffusion sheet 5 Light emitting diode 6 White paint
Claims (2)
ライト用発光ダイオードとよりなり、該発光ダイオード
の頭頂部に遮光膜を配置してなる液晶表示装置。1. A liquid crystal display device comprising a transmissive liquid crystal cell and a light emitting diode for backlight of the liquid crystal cell, wherein a light shielding film is arranged at the top of the light emitting diode.
い、これを前記頭頂部の略半球状部に配置することを特
徴とする上記請求項１記載の液晶表示装置。2. The liquid crystal display device according to claim 1, wherein a white light-shielding film is used as the light-shielding film, and the white light-shielding film is arranged in a substantially hemispherical portion at the top of the head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11108281A JP2000298276A (en) | 1999-04-15 | 1999-04-15 | Display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11108281A JP2000298276A (en) | 1999-04-15 | 1999-04-15 | Display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000298276A true JP2000298276A (en) | 2000-10-24 |
Family
ID=14480683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11108281A Pending JP2000298276A (en) | 1999-04-15 | 1999-04-15 | Display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000298276A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006018261A (en) * | 2004-06-30 | 2006-01-19 | Lg Phillips Lcd Co Ltd | Backlight unit of liquid crystal display device and liquid crystal display device using same |
| KR100937420B1 (en) | 2003-02-06 | 2010-01-18 | 엘지전자 주식회사 | Display structure of lcd |
-
1999
- 1999-04-15 JP JP11108281A patent/JP2000298276A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100937420B1 (en) | 2003-02-06 | 2010-01-18 | 엘지전자 주식회사 | Display structure of lcd |
| JP2006018261A (en) * | 2004-06-30 | 2006-01-19 | Lg Phillips Lcd Co Ltd | Backlight unit of liquid crystal display device and liquid crystal display device using same |
| JP4607682B2 (en) * | 2004-06-30 | 2011-01-05 | エルジー ディスプレイ カンパニー リミテッド | Backlight device of liquid crystal display device and liquid crystal display device using the same |
| US8235571B2 (en) | 2004-06-30 | 2012-08-07 | Lg Display Co., Ltd. | Backlight unit of liquid crystal display device and liquid crystal display device using the same |
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