JP2000285832A - Color display device - Google Patents

Color display device

Info

Publication number
JP2000285832A
JP2000285832A JP8802099A JP8802099A JP2000285832A JP 2000285832 A JP2000285832 A JP 2000285832A JP 8802099 A JP8802099 A JP 8802099A JP 8802099 A JP8802099 A JP 8802099A JP 2000285832 A JP2000285832 A JP 2000285832A
Authority
JP
Japan
Prior art keywords
film
display surface
color
green
light
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
JP8802099A
Other languages
Japanese (ja)
Inventor
Nobutaka Daiku
信隆 大工
Yoshiharu Miwa
義治 三和
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.)
Nippon Electric Glass Co Ltd
Original Assignee
Nippon Electric Glass 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 Nippon Electric Glass Co Ltd filed Critical Nippon Electric Glass Co Ltd
Priority to JP8802099A priority Critical patent/JP2000285832A/en
Publication of JP2000285832A publication Critical patent/JP2000285832A/en
Pending legal-status Critical Current

Links

Landscapes

  • Optical Filters (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

PROBLEM TO BE SOLVED: To significantly improve the contrast and color purity by mounting a film having selective light absorbing power on a display surface. SOLUTION: A film 1 having selective light absorbing power is stuck to the display surface of a panel part 10a by use of an adhesive (for example, epoxy adhesive) 12. The film has the absorption peak within a wavelength range hardly influenced by the emission from the display surface and the property of selectively absorbing and transmitting wavelengths. For the optical characteristics, a film having a spectral transmittance distribution having two absorption peaks between red, green and blue emission spectra or a film having one absorption peak between read and green emission spectra is suitably used. The film can be manufactured by doping various organic pigments in a polymer film consisting of, for example, polyethylene terephthalate, polycarbonate, methyl polymethacrylate, polystyrene, or a copolymer thereof.

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、カラーCRT(陰極線
管)等のカラー表示装置に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color display such as a color CRT (cathode ray tube).

【0002】[0002]

【従来の技術】カラーCRTのパネル部の内面には、
赤、緑、青で1組をなす蛍光体が多数のドットもしくは
ストライプ状に配列され、蛍光面が形成されている。こ
の蛍光面に向けて電子銃より発射される電子ビームをシ
ャドウマスクもしくはアパーチャグリルを通過させて当
てることにより、カラー画像がパネル部を通して観察さ
れる。
2. Description of the Related Art On the inner surface of a panel portion of a color CRT,
A set of phosphors of red, green, and blue is arranged in a number of dots or stripes to form a phosphor screen. By applying an electron beam emitted from an electron gun toward the phosphor screen through a shadow mask or an aperture grill, a color image is observed through the panel unit.

【0003】ところで、カラーCRTの画像をパネル部
を通して見る場合、観察者の周囲に存在する外光、例え
ば窓からの入射太陽光、蛍光灯等の室内照明光が、パネ
ル部を通して蛍光面に入射し、赤、緑、青の光で構成さ
れる画像のコントラストや色純度を著しく低下させると
いう問題がある。
When an image on a color CRT is viewed through a panel unit, external light existing around the observer, for example, sunlight incident from a window or indoor illumination light such as a fluorescent lamp, enters the fluorescent screen through the panel unit. However, there is a problem that the contrast and color purity of an image composed of red, green, and blue light are significantly reduced.

【0004】特にカラーCRTのようなカラー表示装置
においては、色純度が大幅に低下すると、所望の色調が
得られ難くなるため、大きな問題となる。
[0004] In particular, in a color display device such as a color CRT, if the color purity is greatly reduced, it becomes difficult to obtain a desired color tone.

【0005】[0005]

【発明が解決しようとする課題】近年、カラーCRTの
コントラストや色純度を向上させる目的で、パネル部を
構成するパネルガラスにNd23等の選択吸収能を有す
る着色成分を添加したり、表示面に光吸収特性を有する
フィルムを取り付けることが行われているが、各々欠点
がある。
In recent years, for the purpose of improving the contrast and color purity of a color CRT, a coloring component having selective absorption such as Nd 2 O 3 has been added to a panel glass constituting a panel portion. Attempts have been made to attach a film having light absorption properties to the display surface, but each has drawbacks.

【0006】すなわちNd23等の選択吸収能を有する
着色成分は、原料が高価であり、大量生産には不向きで
ある。また表示面に光吸収特性を有するフィルムを取り
付けると、赤、緑、青の蛍光体から発せられる光までも
吸収されて画像の輝度が大幅に(例えば50%以上)低
下するという問題がある。
That is, coloring components having selective absorption such as Nd 2 O 3 require expensive raw materials and are not suitable for mass production. Further, when a film having a light absorbing property is attached to the display surface, even light emitted from red, green, and blue phosphors is absorbed, and there is a problem that the luminance of an image is greatly reduced (for example, 50% or more).

【0007】本発明は、上記事情に鑑みなされたもので
あり、画像の輝度性能の低下を抑えつつ、コントラスト
性能と色純度の大幅な向上を図ることが可能なカラー表
示装置を提供することを目的とする。
SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a color display device capable of significantly improving contrast performance and color purity while suppressing a decrease in image luminance performance. Aim.

【0008】[0008]

【課題を解決するための手段】本発明のカラー表示装置
は、表示面に光選択吸収能を有するフィルムが取り付け
られてなることを特徴とする。
A color display device according to the present invention is characterized in that a film having a light selective absorption ability is attached to a display surface.

【0009】[0009]

【発明の実施の形態】本発明における光選択吸収能を有
するフィルムは、表示面からの発光に影響の少ない波長
範囲内に吸収ピークを持ち、選択的に波長を吸収、透過
する性質を有するものであり、このフィルムをカラーC
RT等のカラー表示装置の表示面に取り付けることによ
って、画像の輝度性能の低下を極力抑えつつ、外光を有
効に吸収してコントラスト性能と色純度を向上させるこ
とが可能となる。
BEST MODE FOR CARRYING OUT THE INVENTION A film having a light selective absorption ability according to the present invention has an absorption peak within a wavelength range that has little influence on light emission from a display surface, and has a property of selectively absorbing and transmitting wavelengths. And this film is called Color C
By attaching to a display surface of a color display device such as an RT, it is possible to effectively absorb external light and to improve contrast performance and color purity while suppressing a decrease in image luminance performance as much as possible.

【0010】本発明において使用するフィルムとして
は、光選択吸収能、すなわち赤、緑、青の蛍光体から発
せられる光を透過し、それ以外の光を吸収する能力を有
するもの、すなわち赤、緑、青の発光スペクトルの間で
2つの吸収ピークを持つ能力を有するフィルムが好まし
いが、赤と緑の発光スペクトルの間、あるいは緑と青の
発光スペクトルの間で1つの吸収ピークを持つフィルム
であっても使用可能である。
The film used in the present invention has a light selective absorption ability, that is, a film having a capability of transmitting light emitted from red, green and blue phosphors and absorbing other light, ie, red and green. A film having the ability to have two absorption peaks between the blue emission spectrum is preferred, but a film having one absorption peak between the red and green emission spectra, or between the green and blue emission spectra. It can also be used.

【0011】このようなフィルムは、例えばポリエチレ
ンテレフタレート、ポリカーボネート、ポリメタクリル
酸メチル、ポリスチレン及びそれらの共重合体の高分子
フィルムに、各種の有機色素(例えばペリレン系、クマ
リン系、イミダゾール系)をドープすることによって作
製することができる。
In such a film, for example, a polymer film of polyethylene terephthalate, polycarbonate, polymethyl methacrylate, polystyrene, or a copolymer thereof is doped with various organic dyes (eg, perylene, coumarin, imidazole). By doing so, it can be produced.

【0012】また本発明におけるフィルムは、それ自体
に接着性や圧着性があれば、そのまま表示面に貼り付け
れば良い。またフィルムだけで貼り付けることができな
ければ、接着剤を用いて表示面に貼り付ければ良く、こ
の場合、光選択吸収能を有する接着剤を使用すると、輝
度性能がより向上するため好ましい。
The film of the present invention may be attached to the display surface as it is, as long as the film itself has adhesiveness and pressure-bonding properties. If the film cannot be adhered only with a film, the film may be adhered to the display surface using an adhesive. In this case, it is preferable to use an adhesive having a light selective absorption ability, since the luminance performance is further improved.

【0013】このフィルムの厚みとしては、0.05〜
2.0mmが適当であり、またフィルムの外表面には、
傷防止の目的で、表面硬化処理を施しても良い。
The thickness of the film is 0.05 to
2.0 mm is appropriate, and on the outer surface of the film,
A surface hardening treatment may be performed for the purpose of preventing scratches.

【0014】さらに本発明においては、光選択吸収能を
有するフィルム以外にも、必要に応じて、反射防止膜、
帯電防止膜、電磁波遮蔽膜といった機能膜を積層させる
ことが可能である。
Further, in the present invention, an antireflection film, if necessary, other than the film having the light selective absorption ability,
It is possible to stack functional films such as an antistatic film and an electromagnetic wave shielding film.

【0015】[0015]

【実施例】以下、本発明のカラー表示装置を実施例に基
づいて詳細に説明する。
DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a color display device of the present invention will be described in detail based on embodiments.

【0016】図1は、表示面に光選択吸収能を有するフ
ィルムが取り付けられたカラーCRTを示す概略断面図
である。
FIG. 1 is a schematic sectional view showing a color CRT in which a film having a light selective absorption ability is attached to a display surface.

【0017】図1中、カラーCRT10のパネル部10
aの表示面には、光選択吸収能を有するフィルム11
が、接着剤(例えばエポキシ系接着剤)12によって貼
り付けられている。尚、10bはファンネル部、10c
はネック部、13は蛍光膜、14はシャドウマスク、1
5は磁気シールド、16は電子銃を各々示している。
In FIG. 1, a panel section 10 of a color CRT 10 is shown.
a, a film 11 having a light selective absorption ability
Are adhered by an adhesive (for example, an epoxy-based adhesive) 12. In addition, 10b is a funnel part, 10c
Is a neck portion, 13 is a fluorescent film, 14 is a shadow mask, 1
Reference numeral 5 denotes a magnetic shield, and 16 denotes an electron gun.

【0018】この光選択吸収能を有するフィルム11の
光学特性としては、発光特性等を考慮すると、図2の
(ア)の分光透過率分布で示すような赤(R)、緑
(G)、青(B)の発光スペクトルの間で2つの吸収ピ
ークを持つものや、あるいは図2の(イ)の分光透過率
分布で示すような赤(R)と緑(G)の発光スペクトル
の間で1つの吸収ピークを持つフィルムが適している。
As for the optical characteristics of the film 11 having the light selective absorption ability, considering the light emission characteristics and the like, the red (R), green (G), green (G), and the like shown by the spectral transmittance distribution of FIG. One having two absorption peaks between the emission spectra of blue (B) and the emission spectrum of red (R) and green (G) as shown by the spectral transmittance distribution of FIG. Films with one absorption peak are suitable.

【0019】次に図2の(ア)で示した光学特性を有す
るフィルムを、透過率が86%のパネルを使用したカラ
ーCRTにエポキシ系接着剤で貼り付け、そのコントラ
ストと色純度を測定し、フィルムを貼り付けなかった場
合との相対比較を行ったところ、表1の通りであった。
Next, a film having the optical characteristics shown in FIG. 2A was attached to a color CRT using a panel having a transmittance of 86% with an epoxy adhesive, and the contrast and color purity were measured. Table 1 shows a relative comparison with the case where no film was attached.

【0020】尚、表中のコントラストは、パネル表示面
の反射率に対する輝度の割合(輝度/反射率)から求め
たものであり、フィルムを貼り付けなかった場合を10
0とした。また色純度は、400ルクスの照明雰囲気で
のRGB各単独発光スペクトルのCIE色度を色度図上
で直線で結んだ三角形の面積から求めたものであり、フ
ィルムを貼り付けなかった場合を100とした。
The contrast in the table is obtained from the ratio of the luminance to the reflectance of the panel display surface (luminance / reflectance).
0 was set. The color purity was obtained by calculating the CIE chromaticity of each of the RGB single emission spectra in an illumination atmosphere of 400 lux from the area of a triangle connected by a straight line on the chromaticity diagram. And

【0021】[0021]

【表1】 [Table 1]

【0022】表1から明らかなように、フィルムを貼り
付けたカラーCRT(フィルム有り)は、フィルムを貼
り付けなかったカラーCRT(フィルム無し)に比べ
て、コントラストと色純度が、各々50%向上した。
As is apparent from Table 1, the color CRT with the film attached (with film) has 50% improvement in contrast and color purity, respectively, as compared with the color CRT without the film attached (without film). did.

【0023】[0023]

【発明の効果】以上のように本発明のカラー表示装置
は、表示面の輝度性能の低下を極力抑えつつ、外光を有
効に吸収してコントラスト性能と色純度の大幅な向上を
図ったものであり、特に色純度が向上するという点か
ら、カラーCRTを始めとして、カラーPDP、カラー
LCDといったカラー表示装置として好適である。
As described above, the color display device of the present invention is capable of significantly improving the contrast performance and color purity by effectively absorbing external light while minimizing the decrease in the luminance performance of the display surface. In particular, since the color purity is improved, it is suitable as a color display device such as a color CRT, a color PDP, and a color LCD.

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

【図1】表示面に光選択吸収能を有するフィルムが取り
付けられたカラーCRTを示す概略断面図である。
FIG. 1 is a schematic sectional view showing a color CRT in which a film having a light selective absorption ability is attached to a display surface.

【図2】光選択吸収能を有するフィルムの分光透過率曲
線を示すグラフである。
FIG. 2 is a graph showing a spectral transmittance curve of a film having a light selective absorption ability.

【符号の説明】[Explanation of symbols]

10 カラーCRT 10a パネル部 10b ファンネル部 10c ネック部 11 光選択吸収能を有するフィルム 12 接着剤 13 蛍光膜 14 シャドウマスク 15 磁気シールド 16 電子銃 DESCRIPTION OF SYMBOLS 10 Color CRT 10a Panel part 10b Funnel part 10c Neck part 11 Film which has light selective absorption ability 12 Adhesive 13 Fluorescent film 14 Shadow mask 15 Magnetic shield 16 Electron gun

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】 表示面に光選択吸収能を有するフィルム
が取り付けられてなることを特徴とするカラー表示装
置。
1. A color display device comprising a display surface on which a film having a light selective absorption ability is attached.
JP8802099A 1999-03-30 1999-03-30 Color display device Pending JP2000285832A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8802099A JP2000285832A (en) 1999-03-30 1999-03-30 Color display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8802099A JP2000285832A (en) 1999-03-30 1999-03-30 Color display device

Publications (1)

Publication Number Publication Date
JP2000285832A true JP2000285832A (en) 2000-10-13

Family

ID=13931164

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8802099A Pending JP2000285832A (en) 1999-03-30 1999-03-30 Color display device

Country Status (1)

Country Link
JP (1) JP2000285832A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6512643B1 (en) 1999-11-19 2003-01-28 Sanyo Color Works, Ltd. Photoselective absorbing filter and color display equipped with said filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6512643B1 (en) 1999-11-19 2003-01-28 Sanyo Color Works, Ltd. Photoselective absorbing filter and color display equipped with said filter

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