JP3220884B2 - Display device - Google Patents
Display deviceInfo
- Publication number
- JP3220884B2 JP3220884B2 JP16940793A JP16940793A JP3220884B2 JP 3220884 B2 JP3220884 B2 JP 3220884B2 JP 16940793 A JP16940793 A JP 16940793A JP 16940793 A JP16940793 A JP 16940793A JP 3220884 B2 JP3220884 B2 JP 3220884B2
- Authority
- JP
- Japan
- Prior art keywords
- optical filter
- display panel
- present
- negative step
- display device
- 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
Landscapes
- Mounting And Adjusting Of Optical Elements (AREA)
- Optical Filters (AREA)
- Diffracting Gratings Or Hologram Optical Elements (AREA)
- Liquid Crystal (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、液晶パネルなどのフラ
ットディスプレイにほぼ密着して用いる、光学フィルタ
ーの構造に関する。本発明は、液晶パネル、ＥＬ素子、
プラズマディスプレイなどのフラットディスプレイにお
いて、その表示品質を向上・改善するために用いる光学
フィルター全般に利用できる。特に、樹脂成形または切
削により製造される光学フィルターにおいて本発明は有
効である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of an optical filter which is used in close contact with a flat display such as a liquid crystal panel. The present invention relates to a liquid crystal panel, an EL element,
In flat displays such as plasma displays, the present invention can be used for all optical filters used to improve and improve the display quality. In particular, the present invention is effective for an optical filter manufactured by resin molding or cutting.
【０００２】[0002]
【従来の技術】近年、情報機器の小型化・薄型化・軽量
化が進み、フラットディスプレイが多く用いられてい
る。それらの機器の多くは、ディスプレイパネルの前後
に更に光学フィルターを組み込み、表示品質の向上やパ
ネルの寿命向上を図っている。2. Description of the Related Art In recent years, information devices have become smaller, thinner and lighter, and flat displays have been widely used. Many of these devices incorporate optical filters before and after the display panel to improve display quality and extend the life of the panel.
【０００３】液晶テレビにおける照度向上のためのマイ
クロレンズアレイや、画素微細化のための回折格子など
は表示品質の向上の例であり、液晶プロジェクターにお
けるパネル温度上昇防止のための赤外線カットフィルタ
ーは、寿命向上の例である。A microlens array for improving illuminance in a liquid crystal television and a diffraction grating for miniaturizing pixels are examples of improving display quality. An infrared cut filter for preventing a panel temperature from increasing in a liquid crystal projector is This is an example of life improvement.
【０００４】[0004]
【発明が解決しようとする課題】機器の小型化、薄型化
が進み、従来個別に保持できたディスプレイパネルと光
学フィルターの間隔が狭くなり、ほぼ密着して組み込ま
ざるを得なくなってきている。しかしながら、この場
合、下記のような不具合が発生する。As the size and thickness of devices have been reduced, the distance between the display panel and the optical filter, which can be individually held conventionally, has been reduced, and it has been forced to be closely attached. However, in this case, the following problems occur.
【０００５】１）ディスプレイパネルと光学フィルター
の互いに向き合う面が共に平滑面の場合、間隔が均一で
ないとニュートンリングが発生する。1) When both surfaces of the display panel and the optical filter facing each other are smooth surfaces, Newton rings occur unless the intervals are uniform.
【０００６】２）ディスプレイパネルと光学フィルター
の間隔が狭すぎると、モイスチャートラップ現象が起こ
り、高湿度環境下で隙間に結露を生じる。[0006] 2) If the distance between the display panel and the optical filter is too small, the moisture trap phenomenon occurs, and dew condensation occurs in the gap in a high humidity environment.
【０００７】上記１）、２）の問題を防止するには、図
４の従来例に示すように、薄いフィルムを枠の形に抜い
たスペーサー３２を、ディスプレイパネル３３と光学フ
ィルター３１の間に挟み込む方法が一般的であるが、ス
ペーサーフィルムの位置決め・定位置保持が難しく、し
ばしば画面内にはみ出したりパネル外形から飛び出し
て、組み立て不良となったりする。In order to prevent the above problems 1) and 2), as shown in the conventional example of FIG. 4, a spacer 32 formed by cutting a thin film into a frame is provided between the display panel 33 and the optical filter 31. The method of sandwiching is generally used, but it is difficult to position and maintain the spacer film in a fixed position, and the spacer film often protrudes into the screen or jumps out of the outer shape of the panel, resulting in defective assembly.
【０００８】また、回折格子、フレネルレンズのよう
に、光の屈折現象を応用した光学フィルターでは、パネ
ルと光学フィルターの距離が重要である。ところが、薄
いフィルムをスペーサーとして用いる従来の方法では、 ３）１枚毎のスペーサーが薄くて軽いため、フィルム同
士がくっついて、１枚ずつ供給すべき所を２枚以上供給
して組み込んでしまい、所定の間隔が得られない事があ
る。しかも、１枚の厚さが薄いため、組立工程中での異
常検出・排除が難しく、組立後の表示検査で検出して、
不良品を分解・再組立しているのが現状である。Further, in an optical filter using a light refraction phenomenon, such as a diffraction grating and a Fresnel lens, the distance between the panel and the optical filter is important. However, in the conventional method using a thin film as a spacer, 3) Since each spacer is thin and light, the films are stuck together, and two or more places to be supplied one by one are supplied and incorporated. The predetermined interval may not be obtained. Moreover, since the thickness of one sheet is thin, it is difficult to detect and eliminate abnormalities during the assembly process.
At present, defective products are disassembled and reassembled.
【０００９】[0009]
【課題を解決するための手段】本発明の表示装置は、回
折格子、フレネルレンズ、赤外線カットフィルター、紫
外線カットフィルター、及びマイクロレンズアレイのい
ずれかからなる光学フィルターと、ディスプレイパネル
と、前記ディスプレイパネルを外装する外装部とを有す
る表示装置において、前記光学フィルターの周辺部は負
の段差部を有し、前記光学フィルターの負の段差部に囲
まれた領域には前記ディスプレイパネルと対向配置され
る多角形の凸状部を有し、前記ディスプレイパネルは前
記光学フィルターの負の段差部に当接する前記外装部を
介して前記光学フィルターと対向配置されてなることを
特徴とする。According to the present invention, there is provided a display device comprising: an optical filter comprising any one of a diffraction grating, a Fresnel lens, an infrared cut filter, an ultraviolet cut filter, and a micro lens array, a display panel, and the display panel. Wherein the peripheral portion of the optical filter has a negative step portion, and a region surrounded by the negative step portion of the optical filter is disposed to face the display panel. The display panel has a polygonal convex portion, and the display panel is disposed so as to face the optical filter via the exterior portion that contacts a negative step portion of the optical filter.
【００１０】[0010]
【実施例】以下、本発明の実施例を図を用いながら説明
する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.
【００１１】図１は、本発明の関連技術の一つであり、
光学フィルターの周辺部に複数の突起を形成し、この突
起をディスプレイパネルに接触させる例である。突起部
２の光学フィルター面からの高さを所定の寸法にするこ
とで、光学フィルター１とディスプレイパネル３との間
隔を均一かつ最適にとることができ、ニュートンリング
やモイスチャートラップの発生を防ぐことができる。FIG. 1 shows one of the related arts of the present invention.
This is an example in which a plurality of protrusions are formed around the optical filter, and the protrusions are brought into contact with the display panel. By setting the height of the projection 2 from the optical filter surface to a predetermined size, the distance between the optical filter 1 and the display panel 3 can be made uniform and optimal, and the generation of Newton rings and moisture traps can be prevented. Can be.
【００１２】図２は、本発明の関連技術の他の例であ
り、光学フィルターの外周に突出した段差部を形成し、
ディスプレイパネルに突出した段差部を接触させる例で
ある。原理・効果は図１の関連技術と同様である。図２
の関連技術は、光学フィルターに対し外力が加わる可能
性がある場合に、光学フィルターの剛性を高め、その変
形を防止・軽減するのに有効である。FIG. 2 shows another example of the related art of the present invention, in which a projecting step is formed on the outer periphery of the optical filter.
This is an example in which a protruding step is brought into contact with a display panel. The principle and effect are the same as those of the related art of FIG. FIG.
Is effective in increasing the rigidity of the optical filter and preventing or reducing its deformation when an external force may be applied to the optical filter.
【００１３】また、図２に示す構造をとれば、外装の制
約上、光学フィルター１１とディスプレイパネル１３を
保持するに当たり、その側面をカバーできない場合に、
異物が側面から隙間に侵入するのを防ぐことができる。Further, if the structure shown in FIG. 2 is adopted, when the optical filter 11 and the display panel 13 cannot be covered on the side when holding the optical filter 11 and the display panel 13 due to the restrictions of the exterior,
Foreign matter can be prevented from entering the gap from the side surface.
【００１４】図３は、本発明の実施例であり、図２とは
逆に、周囲の段差面が光学フィルター面より低くなるよ
うに形成した例である。この実施例の光学フィルター
は、ディスプレイパネルを組み込んだ既存の製品に、光
学フィルターを後から付け加える場合等に使用する。既
存の製品においては、ディスプレイパネル２３は製品の
外装２４の表面より奥に入っていることが多い。この引
っ込み量が光学フィルターとディスプレイパネルの適正
間隔より大きい場合、外周に負の段差部２２を設けた光
学フィルター２１を使用することによって、光学フィル
ター面をディスプレイパネル面に近づけ、適正な間隔を
確保できる。FIG. 3 shows an embodiment of the present invention, in which, in contrast to FIG. 2, the peripheral step surface is formed lower than the optical filter surface. The optical filter of this embodiment is used when an optical filter is added later to an existing product incorporating a display panel. In existing products, the display panel 23 is often deeper than the surface of the exterior 24 of the product. If the amount of retraction is larger than the proper distance between the optical filter and the display panel, the optical filter surface having the negative step 22 on the outer periphery is used to bring the optical filter surface closer to the display panel surface and secure the proper distance. it can.
【００１５】図３の実施例は、フレネルレンズや回折格
子のように、光学フィルターとディスプレイパネルとの
間隔が表示品質を左右する光学フィルターを、既存の製
品に後から付け加える場合に特に有効である。The embodiment shown in FIG. 3 is particularly effective when an optical filter, such as a Fresnel lens or a diffraction grating, whose display quality depends on the distance between the optical filter and the display panel, is added later to an existing product. .
【００１６】尚、本発明はディスプレイパネルを対象に
説明したが、それ以外でも光学フィルターを用いる必要
のあるパネル形状のものに適用可能である。Although the present invention has been described with reference to a display panel, the present invention is also applicable to a panel having a necessity of using an optical filter.
【００１７】[0017]
【発明の効果】以上、説明したように、本発明の構造を
備えた光学フィルターを用いることにより、従来の方法
において問題となっていたニュートンリング、モイスチ
ャートラップの発生を防ぎ、光学フィルターとディスプ
レイパネルの間隔を正確かつ容易に最適値に設定でき、
良好な表示品質を得ることができる。As described above, by using the optical filter having the structure of the present invention, the generation of Newton rings and moisture traps, which are problems in the conventional method, can be prevented, and the optical filter and the display panel can be prevented. Can be set accurately and easily to the optimum value,
Good display quality can be obtained.
【００１８】また、従来用いられていたスペーサーを使
用しないことにより、組立作業時に発生する組み込み不
良の問題も解消できる。Further, by not using the conventionally used spacer, the problem of improper mounting that occurs during the assembling operation can be solved.
【００１９】さらに、部品点数が減るので、組立工程を
簡略にし、加工費と部品費を削減することができる。Further, since the number of parts is reduced, the assembling process can be simplified, and the processing cost and the component cost can be reduced.
【図１】本発明の関連技術。周辺部に突起を持つ光学フ
ィルターの斜視図。FIG. 1 is a related technology of the present invention. FIG. 3 is a perspective view of an optical filter having a protrusion on a peripheral portion.
【図２】本発明の関連技術。外周に突出した段差部を持
つ光学フィルターの斜視図。FIG. 2 shows a related technique of the present invention. FIG. 4 is a perspective view of an optical filter having a step portion protruding on the outer periphery.
【図３）】（ａ）本発明の実施例。外周に光学フィルタ
ー面より低い負の段差部を持つ光学フィルターの斜視
図。（ｂ）本発明の実施例。図３（ａ）の光学フィルタ
ーを既存の製品に組み込んだ断面図。FIG. 3 (a) Example of the present invention. FIG. 4 is a perspective view of an optical filter having a negative step portion lower than the optical filter surface on the outer periphery. (B) Example of the present invention. Sectional drawing which incorporated the optical filter of FIG. 3 (a) into the existing product.
【図４】従来例。フィルムスペーサーを使用した例の斜
視図。FIG. 4 is a conventional example. FIG. 9 is a perspective view of an example using a film spacer.
１，１１，２１，３１ 光学フィルター ２ 突起部 １２ 外周の突出した段差部 ２２ 外周の負の段差部 ３，１３，２３，３３ ディスプレイパネル ２４ 既存の製品の外装 ３２ フィルムスペーサー 1,11,21,31 Optical filter 2 Projection 12 Outer protruding step 22 Outer perimeter negative step 3,13,23,33 Display panel 24 Exterior of existing product 32 Film spacer
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｇ０９Ｆ 9/00 ３３０ Ｇ０９Ｆ 9/00 ３３０Ｃ (58)調査した分野(Int.Cl.7，ＤＢ名) G02B 5/20 G02B 7/00 G02F 1/1335 500 G09F 9/00 327 G09F 9/00 330 ──────────────────────────────────────────────────続 き Continuation of front page (51) Int.Cl. 7 identification code FI G09F 9/00 330 G09F 9/00 330C (58) Fields investigated (Int.Cl. 7 , DB name) G02B 5/20 G02B 7 / 00 G02F 1/1335 500 G09F 9/00 327 G09F 9/00 330
Claims (1)
フィルター、紫外線カットフィルター、及びマイクロレ
ンズアレイのいずれかからなる光学フィルターと、ディ
スプレイパネルと、前記ディスプレイパネルを外装する
外装部とを有する表示装置において、前記光学フィルタ
ーの周辺部は負の段差部を有し、前記光学フィルターの
負の段差部に囲まれた領域には前記ディスプレイパネル
と対向配置される多角形の凸状部を有し、前記ディスプ
レイパネルは前記光学フィルターの負の段差部に当接す
る前記外装部を介して前記光学フィルターと対向配置さ
れてなることを特徴とする表示装置。1. A display device comprising: an optical filter including any one of a diffraction grating, a Fresnel lens, an infrared cut filter, an ultraviolet cut filter, and a microlens array; a display panel; A peripheral portion of the optical filter has a negative step portion, a region surrounded by the negative step portion of the optical filter has a polygonal convex portion disposed to face the display panel, The display device, wherein the display panel is arranged to face the optical filter via the exterior part abutting on a negative step of the optical filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16940793A JP3220884B2 (en) | 1993-07-08 | 1993-07-08 | Display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16940793A JP3220884B2 (en) | 1993-07-08 | 1993-07-08 | Display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0727913A JPH0727913A (en) | 1995-01-31 |
| JP3220884B2 true JP3220884B2 (en) | 2001-10-22 |
Family
ID=15886033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16940793A Expired - Lifetime JP3220884B2 (en) | 1993-07-08 | 1993-07-08 | Display device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3220884B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2991183B2 (en) | 1998-03-27 | 1999-12-20 | 日本電気株式会社 | Organic electroluminescence device |
| US7995167B2 (en) | 2006-10-18 | 2011-08-09 | Sharp Kabushiki Kaisha | Liquid crystal display device and method for manufacturing liquid crystal display device |
-
1993
- 1993-07-08 JP JP16940793A patent/JP3220884B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0727913A (en) | 1995-01-31 |
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