JPH03250530A - Manufacture of fluorescent surface of color cathode-ray tube - Google Patents
Manufacture of fluorescent surface of color cathode-ray tubeInfo
- Publication number
- JPH03250530A JPH03250530A JP4537590A JP4537590A JPH03250530A JP H03250530 A JPH03250530 A JP H03250530A JP 4537590 A JP4537590 A JP 4537590A JP 4537590 A JP4537590 A JP 4537590A JP H03250530 A JPH03250530 A JP H03250530A
- Authority
- JP
- Japan
- Prior art keywords
- pigment
- color
- layer
- film
- pigment layer
- 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
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 239000000049 pigment Substances 0.000 claims abstract description 69
- 239000002002 slurry Substances 0.000 claims abstract description 17
- 239000007864 aqueous solution Substances 0.000 claims abstract description 6
- 239000003086 colorant Substances 0.000 claims abstract description 6
- 239000011347 resin Substances 0.000 claims abstract description 6
- 229920005989 resin Polymers 0.000 claims abstract description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 23
- 230000001681 protective effect Effects 0.000 claims description 12
- 230000015572 biosynthetic process Effects 0.000 abstract description 7
- 239000000839 emulsion Substances 0.000 abstract description 7
- 239000000203 mixture Substances 0.000 abstract description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 abstract description 5
- 239000000126 substance Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 64
- 239000001056 green pigment Substances 0.000 description 12
- 239000001055 blue pigment Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 8
- 239000001054 red pigment Substances 0.000 description 6
- 239000011521 glass Substances 0.000 description 5
- 239000004372 Polyvinyl alcohol Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000031700 light absorption Effects 0.000 description 3
- 229920002451 polyvinyl alcohol Polymers 0.000 description 3
- 239000004925 Acrylic resin Substances 0.000 description 2
- 229920000178 Acrylic resin Polymers 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000008119 colloidal silica Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- -1 acrylic ester Chemical class 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- JOSWYUNQBRPBDN-UHFFFAOYSA-P ammonium dichromate Chemical compound [NH4+].[NH4+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O JOSWYUNQBRPBDN-UHFFFAOYSA-P 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 239000003504 photosensitizing agent Substances 0.000 description 1
- 229920005990 polystyrene resin Polymers 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
Abstract
Description
【発明の詳細な説明】
し産業上の利用分野］
本発明はカラーブラウン管の蛍光面製造方法に係り、特
に、高コントラストのカラーブラウン管の蛍光面製造方
法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for manufacturing a phosphor screen for a color cathode ray tube, and more particularly to a method for manufacturing a phosphor screen for a high contrast color cathode ray tube.
［従来の技術］
近年、カラー受像管において高コントラストの画面が要
求されるようになり、それに伴って、外光反射率を改善
する目的で、フェースプレートに着色ガラスを用いるこ
とあるいは蛍光膜に顔料付き蛍光体を用いることの何れ
かもしくは両者の方法が一般的に採用されている。これ
はカラーデイスプレィ管においても同様である。[Prior Art] In recent years, there has been a demand for high-contrast screens in color picture tubes, and with this, colored glass has been used for the face plate or pigments have been added to the fluorescent film in order to improve the reflectance of external light. Generally, one or both methods of using an attached phosphor are employed. This also applies to color display tubes.
これらの方法の内、フェースプレートに着色ガラスを用
いる方法は、ガラスの透過率を低下させる方向へ調整−
することによって実用領域の任意のコントラストを選択
することができるが、外光のみならず蛍光膜の発光を吸
収する割合が高いため、明るさの低下が著しい。Among these methods, the method of using colored glass for the face plate is an adjustment that reduces the transmittance of the glass.
By doing so, it is possible to select an arbitrary contrast within a practical range, but since the absorption rate of not only external light but also light emitted from the fluorescent film is high, the brightness is significantly reduced.
また、顔料付き蛍光体を用いる方法は、画面の明るさを
なるべく低下させることなくコントラストを改善したい
場合に有効な方法とされているが、この方法を用いて高
いコントラストを得ようとする場合には蛍光体粒子の表
面に多量の顔料を付着させる必要があり、付着量に限界
があって、製造技術的に限界があること、また、仮りに
高濃度の顔料を付着させた蛍光体が得られたとしても、
顔料濃度が高すぎるとコントラストの改善効果よりも明
るさ低下の影響の力が大きくなってしまうという問題が
ある。In addition, the method of using pigmented phosphors is considered to be an effective method when you want to improve contrast without reducing screen brightness as much as possible, but when trying to obtain high contrast using this method, It is necessary to attach a large amount of pigment to the surface of the phosphor particles, and there is a limit to the amount of pigment attached, and there are limitations in manufacturing technology. Even if you are
If the pigment concentration is too high, there is a problem in that the effect of reducing brightness becomes greater than the effect of improving contrast.
上記両者の方法の長所を活がし、明るさの低下を抑え、
かつ、コントラストをより改善する方法として、フェー
スプレートと蛍光膜との間に該蛍光膜の発光色と同色の
体色を有する顔料層を設けるという方法があり、この方
法の公知例としては、例えば、特公昭５２−１４５８７
号、特公昭５２−１４５８８号、特公昭５２−１４５８
９号等にその記載がある。これらに開示された発明にお
いては、顔料層の体色を蛍光膜の発光色と同一に選択す
ることによって、黒色や灰色などの場合と異なり、該顔
料層が外光のうち該蛍光膜の発光色以外の色の光を吸収
し、しかも該蛍光膜からの発光の吸収が少ないため、画
面の明るさをあまり犠牲にすることなしに、コントラス
トを改善することが可能であるとされている。Taking advantage of the advantages of both methods above, suppressing the decrease in brightness,
In addition, as a method for further improving the contrast, there is a method of providing a pigment layer having the same body color as the emission color of the fluorescent film between the face plate and the fluorescent film, and known examples of this method include, for example: , Special Publication Showa 52-14587
No., Special Publication No. 52-14588, Special Publication No. 52-1458
There is a description in No. 9 etc. In the inventions disclosed in these publications, by selecting the body color of the pigment layer to be the same as the luminescent color of the fluorescent film, unlike the case of black or gray, the pigment layer is able to detect the luminescent color of the fluorescent film in the outside light. It is said that it is possible to improve the contrast without sacrificing much of the brightness of the screen because it absorbs light of colors other than colors and also absorbs little light emitted from the fluorescent film.
これらの発明において、顔料層形成は、一般的に、カラ
ーブラウン管の蛍光面形成と同様のフォトリソグラフィ
技術を用いて行われる。すなわち、まず、カラーブラウ
ン管のフェースプレート内面に第１の顔料スラリー例え
ば緑色顔料と感光性結合剤例えば重クロム酸アンモニウ
ム（以下、ＡＤＣと略称する）とポリビニルアルコール
（以下、ＰＶＡと略称する）とを混合してなるスラリー
を塗布、乾燥して形成した膜にシャドウマスクを介して
露光をし、現像して緑色顔料層を所定のパターンに形成
する。次いで、第２の顔料スラリー例えば青色顔料と感
光性結合剤とを混合した青色顔料スラリーを緑色顔料層
を形成しであるフェースプレート内面に塗布し、上記と
同様にして、シャドウマスクを介して露光し、現像して
所定パターンの青色顔料層を得る。さらに、同様の操作
を繰り返して、第３の顔料層すなわち赤色顔料層を所定
のパターンに堕り分ける。このようにして、緑色、青色
および赤色顔料層をそれぞれ所定のパターンになり分け
た顔料層を得る。In these inventions, the pigment layer is generally formed using the same photolithography technique as that used to form the phosphor screen of a color cathode ray tube. That is, first, a first pigment slurry such as a green pigment, a photosensitive binder such as ammonium dichromate (hereinafter abbreviated as ADC), and polyvinyl alcohol (hereinafter abbreviated as PVA) is applied to the inner surface of the face plate of a color cathode ray tube. The mixed slurry is applied and dried to form a film, which is exposed to light through a shadow mask and developed to form a green pigment layer in a predetermined pattern. Next, a second pigment slurry, such as a blue pigment slurry in which a blue pigment and a photosensitive binder are mixed, is applied to the inner surface of the face plate to form a green pigment layer, and exposed to light through a shadow mask in the same manner as above. Then, it is developed to obtain a blue pigment layer with a predetermined pattern. Further, similar operations are repeated to form the third pigment layer, that is, the red pigment layer, into a predetermined pattern. In this way, pigment layers are obtained in which the green, blue, and red pigment layers are separated into predetermined patterns.
［発明が解決しようとする課題］
しかしながら、上記従来技術の顔料層形成後法では、第
１に塗布した緑色顔料が第２．第３の顔料層を形成すべ
き位置に残留していたり、また、緑色顔料層上には青色
および赤色！０科スラリーが塗布され、青色顔料層上に
は赤色顔料スラリーが塗布されるために、先に塗布され
た顔料層に後で塗布した顔料が混入したり、かぶりが出
て、混色が発生しやすい。[Problems to be Solved by the Invention] However, in the above-mentioned prior art post-pigment layer formation method, the green pigment applied in the first layer is applied in the second layer. It remains in the position where the third pigment layer should be formed, and blue and red pigments remain on the green pigment layer! Since the 0 family slurry is applied and the red pigment slurry is applied on the blue pigment layer, the pigment applied later may get mixed into the pigment layer applied earlier, or fog may appear, causing color mixing. Cheap.
これらの混色をなくす方法として現像を十分に行う方法
もあるが、その現像によって必要部分までが除去され、
顔料層が欠落するなど、良好な顔料層パターンが得られ
ないことがある。また、顔料の粒子径が０．１〜０．５
−程度と極めて小さいために、他色の顔料層の凹凸部分
に入り込んでしまい、十分な現像処理を施しても除去さ
れない場合がある。One way to eliminate these color mixtures is to perform sufficient development, but this development removes the necessary parts.
A good pigment layer pattern may not be obtained, such as the pigment layer being missing. In addition, the particle size of the pigment is 0.1 to 0.5
- Because it is extremely small, it may get into the uneven parts of the pigment layer of other colors and may not be removed even if sufficient development processing is performed.
本発明の目的は、上記従来技術の有していた課題を解決
して、フェースプレート内面の顔料残りや混色のない顔
料層を形成し得、明るさの低下が少なく高コントラスト
の画面が得られるカラーブラウン管の蛍光面製造方法を
提供することにある。An object of the present invention is to solve the above-mentioned problems of the prior art, to form a pigment layer without pigment residue or color mixture on the inner surface of the face plate, and to obtain a high-contrast screen with less reduction in brightness. An object of the present invention is to provide a method for manufacturing a phosphor screen of a color cathode ray tube.
［課題を解決するための手段］
上記目的は、フェースプレート内面と蛍光膜との間に蛍
光膜の発光色と同色の体色を有するＭ１層を設けたカラ
ーブラウン管において、３色のそれぞれの顔料層を形成
する際に、フェースプレート内面に第１色目の顔料スラ
リーを塗布するｉ；ｊと、第１色目の顔料層形成後およ
び第２色目の顔料層形成後に有機樹脂を主成分とする水
溶液（アクリルエマルジョン）を塗布し、保護膜を形成
して順次各顔料層を形成して行くこと、によって達成す
ることができる。[Means for Solving the Problems] The above object is to provide a color cathode ray tube in which an M1 layer having a body color that is the same as the emission color of the phosphor film is provided between the inner surface of the face plate and the phosphor film. When forming the layer, a first color pigment slurry is applied to the inner surface of the face plate, and an aqueous solution containing an organic resin as a main component is applied after the first color pigment layer is formed and after the second color pigment layer is formed. This can be achieved by applying an acrylic emulsion, forming a protective film, and sequentially forming each pigment layer.
［作用］
フェースプレート内面のガラス面および各顔料層がアク
リルエマルジョン保護膜によって覆われるため％顔料残
り、他色顔料層への入り込み、他色顔料層上への残留な
どによる混色を防ぐことができる。これは、光吸収膜（
ブラックマトリクス二ＢＭ玖）形成時に僅かに残った樹
脂分を保護膜が覆うため顔料スラリーとの暗反応を抑え
、ガラス面への残留を防ぐことができること、また、顔
ｔ＋層の凹凸を保護膜が滑らかに覆うため他色町１料の
入り込みが妨げられ混色か生じないこと、さらに。[Function] Since the glass surface on the inner surface of the face plate and each pigment layer are covered with an acrylic emulsion protective film, it is possible to prevent color mixing due to pigment remaining, entering other color pigment layers, remaining on other color pigment layers, etc. . This is a light absorption film (
Since the protective film covers the small amount of resin remaining during the formation of the black matrix (2BM), it is possible to suppress the dark reaction with the pigment slurry and prevent it from remaining on the glass surface. Since it covers smoothly, it prevents other color materials from entering and prevents color mixing.
顔料層形成時の乾燥・露光不充分による顔料層樹脂分と
他色顔料スラリーとの暗反応を抑えるためかぶり混色を
防ぐことができることによるものである。This is because it is possible to prevent color mixing due to fogging by suppressing dark reactions between the pigment layer resin and other color pigment slurries due to insufficient drying and light exposure during the formation of the pigment layer.
［実施例］
以下、本発明のカラーブラウン管の蛍光面製造方法につ
いて実施例によって具体的に説明する。[Example] Hereinafter, the method for manufacturing a phosphor screen of a color cathode ray tube according to the present invention will be specifically explained using examples.
蛍光面製造の手順を示した第１図によって説明すると次
の通りである。The procedure for manufacturing the phosphor screen will be explained with reference to FIG. 1 as follows.
まず、（ａ）に示すように、顔料層を形成しようとする
基体、例えば光吸収膜（ＢＭ膜）５を設けたカラーブラ
ウン管フェースプレート１の内表面、にアクリル樹脂エ
マルジョン系接着剤例えばプライマルＣ−７２＜日本ア
クリル社製）を塗布して保護膜２を形成する。ここで、
ブライマルＣ−７２はアクリル酸エステルＣ１（、−Ｃ
ＨＣｏ、−Ｒ（但し、ＲはＣｎＨ，ｎ＋、 ）を４５％
、水５５％を有し、さらに界面活性剤を少量添加したも
のであり、このプライマルＣ−７２が２％、ＰＶＡが０
．１５％、コロイダルシリカが０．２％からなる水溶液
を作成し、これをフェースプレート内面に塗布するもの
である。塗布後は４５℃以上で加熱して乾燥させる。First, as shown in (a), an acrylic resin emulsion adhesive such as Primal C is applied to the inner surface of a substrate on which a pigment layer is to be formed, such as a color cathode ray tube face plate 1 provided with a light absorption film (BM film) 5. -72 (manufactured by Nippon Acrylic Co., Ltd.) to form the protective film 2. here,
Brimal C-72 is an acrylic ester C1 (, -C
HCo, -R (where R is CnH, n+, ) at 45%
, containing 55% water and a small amount of surfactant, with 2% Primal C-72 and 0 PVA.
．． An aqueous solution containing 15% colloidal silica and 0.2% colloidal silica is prepared and applied to the inner surface of the face plate. After coating, it is dried by heating at 45°C or higher.
次に、（ｂ）に示すように、保護膜２上に第１の顔料ス
ラリー例えば１％緑顔料スラリーを塗布し、乾燥を行い
、緑顔料膜３Ｇを作る。次いで、露光、現像処理を施し
て、（Ｃ）に示すように、所定パターンの緑顔材層４Ｇ
を形成する。Next, as shown in (b), a first pigment slurry, for example, a 1% green pigment slurry, is applied onto the protective film 2 and dried to form a green pigment film 3G. Next, exposure and development are performed to form a green pigment layer 4G with a predetermined pattern, as shown in (C).
form.
次に、（ｄ）に示すように、上述のブライマルＣ−７２
を主成分とする水溶液を、緑顔材層４Ｇの上を含めて、
全面に塗布し、４５℃以上で乾燥して保護ｇ２’ を形
成し、さらに、（ｅ）に示すように、第２の顔料スラリ
ー例えば５％青顔料スラリーを、上記録顔料層形成の場
合と同様にして、塗布、乾燥し、青顔料膜３Ｂを作成す
る。さらに、露光、現像処理を施して、げ）に示すよう
に、所定パターンの青顔材層４Ｂを形成する
次に、（ｇ）に示すように、上述のブライマルＣ−７２
を主成分とする水溶液を、緑顔材層４Ｇ、青顔材層の上
を含めて、全面に塗布し、４５℃以上で乾燥して保護膜
２′を形成し、さらに、（ｈ）に示すように、第３の顔
料スラリー例えば赤顔料スラリーを、上述の場合と同様
にして、塗布、乾燥して赤顔材膜３１〈を作成する。さ
らに、露光、現像処理を施して、（１）に示すように、
所定パターンの赤顔材層４１犬を形成する。Next, as shown in (d), the above Brimal C-72
An aqueous solution containing as the main component, including on the green pigment layer 4G,
It is coated on the entire surface and dried at 45°C or higher to form a protective layer g2', and as shown in (e), a second pigment slurry, for example, a 5% blue pigment slurry, is applied as in the case of forming the recording pigment layer. In the same manner, it is applied and dried to create a blue pigment film 3B. Further, as shown in (g), a blue face material layer 4B having a predetermined pattern is formed by performing exposure and development processing.
An aqueous solution containing as the main component is applied to the entire surface including the green pigment layer 4G and the blue pigment layer, dried at 45°C or higher to form a protective film 2', and then (h) As shown, a third pigment slurry, for example, a red pigment slurry, is applied and dried in the same manner as described above to create a red face material film 31. Furthermore, by performing exposure and development processing, as shown in (1),
A red face material layer 41 having a predetermined pattern is formed.
以上で各色顔料層の作成を終了し、その後、通常のカラ
ーブラウン管の蛍光面形成方法と同様にして、蛍光体層
の作成を行う。すなわち、ｌ）に示すように、（ｉ）の
３色顔料層の上に緑蛍光体スラリー（緑蛍光体＋感光剤
の懸濁液）を塗布し、露光、現像を経て緑蛍光体層６Ｇ
を緑顔材層４Ｇの上に形成し、さらに、同様の方法で、
青蛍光体層６Ｂおよび赤蛍光体層６Ｒをそれぞれの顔料
層４Ｂおよび４Ｒ上に形成し、フィルミング７を施して
パネル内面を平坦にした後メタルバック８を行う、その
後、ベーキング処理を行い、中間有機物膜を分解して（
ｋ）に示す蛍光面を得る。This completes the creation of the pigment layers for each color, and then the phosphor layers are created in the same manner as the method for forming the phosphor screen of a normal color cathode ray tube. That is, as shown in l), a green phosphor slurry (suspension of green phosphor + photosensitizer) is applied on the three-color pigment layer of (i), exposed and developed to form the green phosphor layer 6G.
is formed on the green pigment layer 4G, and further, in the same manner,
A blue phosphor layer 6B and a red phosphor layer 6R are formed on the respective pigment layers 4B and 4R, and a filming 7 is applied to flatten the inner surface of the panel, and then a metal backing 8 is performed, and then a baking treatment is performed, By decomposing the intermediate organic film (
Obtain the fluorescent screen shown in k).
上述のようにして得、られた蛍光面を有するフェースプ
レートをカラーブラウン管に実装し、白色輝度およびコ
ントラストについて、顔料層を設けない試料および顔料
層ありで保ｇ［！ｌを用いなかった試料と比較してｌ＝
ｒ価を行い、下表の結果を得た。[! l= compared to the sample without l
The r value was determined and the results shown in the table below were obtained.
顔料層 顔料層あり本実施例
なし 保護膜なし 試料
白色輝度比 １００ ６０ ９０コント
ラスト比＋００ １１０ １３０上表の結果か
ら、白色輝度については、顔料層なしの試料を基準とし
た場合、顔料層あり保護膜なしの試料が６０％の相対輝
度を示し、輝度低下が４０％にも達したのに対して、本
実施例試料は相対輝度９０％で、輝度低下としては１０
％に止まることが判る。この１０％の輝度低下について
は、混色による低下ではなく、顔料層が存在することに
よる低下であることを実験的に確認したので、保！Ｉ膜
の使用が混色の発生を防ぐことができることが知られる
。Pigment layer With pigment layer and without this example Without protective film Sample white brightness ratio 100 60 90 Contrast ratio +00 110 130 From the results in the table above, regarding white brightness, when using the sample without pigment layer as the standard, with pigment layer and protection While the sample without a film showed a relative brightness of 60% and a brightness reduction of as much as 40%, the sample of this example had a relative brightness of 90% and a brightness reduction of 10%.
It turns out that it stops at %. We experimentally confirmed that this 10% decrease in brightness was due to the presence of the pigment layer, rather than due to color mixture, so we decided to keep it! It is known that the use of an I film can prevent the occurrence of color mixing.
また、コントラストについては、顔料層なしの試料を基
準として、顔料層ありで保護膜を用いなかった場合と用
いた場合すなわち本実施例の場合とを比較すると、１１
０％から１３０％に向上し、６ｉ７者に比較して後者が
約１８％の改善を示していることが判る。ここで、コン
トラストは、管面に外光を照射したときの明部輝度と暗
部輝度との比をもってコントラストとした。In addition, regarding the contrast, when comparing the case with a pigment layer without using a protective film and the case with a protective film, that is, the case of this example, with the sample without a pigment layer as a reference, it is 11
It can be seen that the improvement is from 0% to 130%, and the latter shows an improvement of about 18% compared to the 6i7 user. Here, the contrast was defined as the ratio of the brightness in bright areas to the brightness in dark areas when the tube surface was irradiated with external light.
なお、上記保護膜の主成分はアクリルであるが、顔料層
の現像時における欠落が生じた場合には、アクリル樹脂
エマルジョンと同時にポリスチレン樹脂エマルジョン等
も混合し、併用すると、顔料層の欠落がなく良好な膜を
得ることができる。The main component of the above protective film is acrylic, but if the pigment layer is missing during development, mixing a polystyrene resin emulsion etc. at the same time as the acrylic resin emulsion will prevent the pigment layer from missing. A good film can be obtained.
［Ｊ！明の効果］
以上述べてきたように、カラーブラウン管の蛍光面製造
方法を本発明の製造方法とすることによって、従来技術
の有していた課題を解決して、フェースプレート内面の
顔料残りや混色のない顔料層を形成し得、明るさの低下
が少なく高コントラストの画面が得られるカラーブラウ
ン管の製造方法を提供することができた。[J! Effect of brightness] As described above, by applying the manufacturing method of the phosphor screen of a color cathode ray tube to the manufacturing method of the present invention, the problems of the conventional technology can be solved, and the problem of pigment residue and color mixture on the inner surface of the face plate can be solved. It has been possible to provide a method for manufacturing a color cathode ray tube, which can form a pigment layer free of pigment and provide a high-contrast screen with little reduction in brightness.
第１図は、本発明のカラーブラウン管の蛍光面製造方法
の手順を示す工程図である。
ｌ・・・フェースプレート、
２．２′ ２′・・・保護膜、
３Ｇ・・・緑顔材膜、 ３Ｂ・・・青顔材膜、３Ｒ・
・・赤顔材膜、 ４Ｇ・・・緑顔材層、４Ｂ・・・
青顔材層、 ４Ｒ・・・赤顔材層、５・・・光吸収膜
、 ６Ｇ・・・緑蛍光体層、６Ｂ・・・青蛍光体
層、 ６Ｒ・・・赤蛍光体層、７・・・フィルミング
、 ８・・・メタルバック。
Ｇ
勇
ＲFIG. 1 is a process diagram showing the procedure of a method for manufacturing a phosphor screen of a color cathode ray tube according to the present invention. l...Face plate, 2.2'2'...Protective film, 3G...Green face material film, 3B...Blue face material film, 3R.
...Red face material film, 4G...Green face material layer, 4B...
Blue pigment layer, 4R...Red pigment layer, 5...Light absorption film, 6G...Green phosphor layer, 6B...Blue phosphor layer, 6R...Red phosphor layer, 7 ...filming, 8...metal back. G Yur
Claims (1)
光色と同色の体色を有する顔料層を設けたカラーブラウ
ン管において、３色のそれぞれの顔料層を形成する際に
、フェースプレート内面に第１色目の顔料スラリーを塗
布する前と、第１色目の顔料層形成後および第２色目の
顔料層形成後に有機樹脂を主成分とする水溶液を塗布し
、保護膜を形成して順次各顔料層を形成して行くことを
を特徴とするカラーブラウン管の蛍光面製造方法。1. In a color cathode ray tube in which a pigment layer having the same body color as the luminescent color of the fluorescent film is provided between the inner surface of the face plate and the fluorescent film, when forming the pigment layers of each of the three colors, the inner surface of the face plate is Before applying the first color pigment slurry, after forming the first color pigment layer, and after forming the second color pigment layer, an aqueous solution containing an organic resin as a main component is applied to form a protective film, and each pigment is sequentially applied. A method for manufacturing a phosphor screen for a color cathode ray tube, characterized by forming layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4537590A JPH03250530A (en) | 1990-02-28 | 1990-02-28 | Manufacture of fluorescent surface of color cathode-ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4537590A JPH03250530A (en) | 1990-02-28 | 1990-02-28 | Manufacture of fluorescent surface of color cathode-ray tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03250530A true JPH03250530A (en) | 1991-11-08 |
Family
ID=12717522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4537590A Pending JPH03250530A (en) | 1990-02-28 | 1990-02-28 | Manufacture of fluorescent surface of color cathode-ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03250530A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5756241A (en) * | 1996-04-08 | 1998-05-26 | Industrial Technology Research Institute | Self-aligned method for forming a color display screen |
-
1990
- 1990-02-28 JP JP4537590A patent/JPH03250530A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5756241A (en) * | 1996-04-08 | 1998-05-26 | Industrial Technology Research Institute | Self-aligned method for forming a color display screen |
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