JPS63314746A - Manufacture of cathode-ray tube - Google Patents
Manufacture of cathode-ray tubeInfo
- Publication number
- JPS63314746A JPS63314746A JP15165187A JP15165187A JPS63314746A JP S63314746 A JPS63314746 A JP S63314746A JP 15165187 A JP15165187 A JP 15165187A JP 15165187 A JP15165187 A JP 15165187A JP S63314746 A JPS63314746 A JP S63314746A
- Authority
- JP
- Japan
- Prior art keywords
- ray tube
- resin
- cathode ray
- color cathode
- transparent
- 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 description 14
- 229920005989 resin Polymers 0.000 claims abstract description 69
- 239000011347 resin Substances 0.000 claims abstract description 69
- 238000005266 casting Methods 0.000 claims abstract description 46
- 238000002347 injection Methods 0.000 claims abstract description 20
- 239000007924 injection Substances 0.000 claims abstract description 20
- 238000000034 method Methods 0.000 claims description 18
- 230000001678 irradiating effect Effects 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 4
- 230000008030 elimination Effects 0.000 claims description 3
- 238000003379 elimination reaction Methods 0.000 claims description 3
- 239000005336 safety glass Substances 0.000 claims description 2
- 238000010030 laminating Methods 0.000 claims 1
- 238000001723 curing Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 4
- 239000004925 Acrylic resin Substances 0.000 description 3
- 229920000178 Acrylic resin Polymers 0.000 description 3
- 206010052128 Glare Diseases 0.000 description 3
- 238000007796 conventional method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004313 glare Effects 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 229920002050 silicone resin Polymers 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920003002 synthetic resin Polymers 0.000 description 2
- 239000000057 synthetic resin Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 1
- 230000009974 thixotropic effect Effects 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
- Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、カラーブラウン管の画面前方に所定間隔を
隔てて配置した爆縮防止のための安全ガラスや反射防止
ガラスなどの透明板を、透明樹脂を介して貼シ合せるカ
ラーブラウン管の製造方法に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention uses a transparent plate such as safety glass or anti-reflection glass to prevent implosion, which is arranged at a predetermined interval in front of the screen of a color cathode ray tube. The present invention relates to a method for manufacturing color cathode ray tubes that are laminated together via resin.
第ａ 図（ａ）〜（Ｃ）は、従来のカラーブラウン管の
製造方法で、カラーブラウン管とそれの画面前方に配置
したガラスなどの透明板との貼シ合せ方法を工程順に示
した図である。Figures (a) to (C) are diagrams showing, in the order of steps, a method for pasting together a color cathode ray tube and a transparent plate such as glass placed in front of its screen, in a conventional method for manufacturing color cathode ray tubes. .
まず、第８図（ＳＬ）で示すように、カラーブラウン管
（１）の画面（２）とほぼ等しい大きさで、かつほぼ等
しい曲率をもった透明板（３）の周囲に、透明樹脂の樹
脂注入口（４）となる部分だけを残してチクソ性の紫外
線硬化型アクリμ系樹脂、つまシシール樹脂（５）を所
定の幅、厚味に塗布する。First, as shown in Figure 8 (SL), a transparent plate (3) of approximately the same size and curvature as the screen (2) of the color cathode ray tube (1) is covered with a transparent resin. A thixotropic ultraviolet curable acrylic μ-based resin, a tab seal resin (5), is applied to a predetermined width and thickness, leaving only the part that will become the injection port (4).
つぎに、第８図中）で示すように、上記透明板（３）を
カラーブラウン管（１）の画面（２）前方に所定の間隔
を隔てて配置した状態で、上記透明板（３）の前方に配
置したケミカルランプ式の紫外線光源（６）から紫外線
を照射して、上記シール樹脂（５）を硬化させることに
よシ、上記透明板（３）をブラウン管（１）の画面（２
）前方に固定する。Next, as shown in FIG. By irradiating ultraviolet rays from a chemical lamp-type ultraviolet light source (6) placed in front and curing the sealing resin (5), the transparent plate (3) is attached to the screen (2) of the cathode ray tube (1).
) fixed in front.
つづいて、上記樹脂注入口（４）から透明な紫外線硬化
型アクリル系樹脂、つｔｂ透明注型樹脂（７）を注入充
填したのち、第８図（Ｃ）で示すように、上記の紫外線
光源（６）から再び紫外線を照射して、上記透明注型樹
脂（７）を硬化させることによシ、透明板（３）をその
全面において上記ブラウン管（１）の画面（２）に貼シ
合せ固定する。Next, after injecting and filling a transparent ultraviolet curable acrylic resin and a transparent casting resin (7) from the resin injection port (4), as shown in FIG. 8(C), the ultraviolet light source By irradiating ultraviolet rays again from (6) to harden the transparent casting resin (7), the transparent plate (3) is pasted on its entire surface to the screen (2) of the cathode ray tube (1). Fix it.
従来のカラーブラウン管の製造方法は、以上のような工
程であるから、第８図（ｅ）で示す紫外線の照射時にお
いて、上記透明注型樹脂（７）が硬化収縮を起すため、
上記注入口（４）付近で第４図で拡大して示したように
、透明注型樹脂（７）の液面（８）が低下して、すし状
の硬化むら（９）を発生する。このような硬化むら（９
）が発生すると、その周シの注型樹脂（７）との屈折率
の相違からカラーブラウン管（１）の画面（２）のモザ
イク構造と干渉し合って、その部分がきらきら輝いてみ
える。つまり、きら現象が発生してカラーブラウン管（
１）の画面品位を著しく損なうといった欠点があった。Since the conventional color cathode ray tube manufacturing method involves the steps described above, the transparent casting resin (7) hardens and shrinks during irradiation with ultraviolet rays as shown in FIG. 8(e).
As shown in an enlarged view in FIG. 4 near the injection port (4), the liquid level (8) of the transparent casting resin (7) decreases, causing sushi-like hardening unevenness (9). Such uneven hardening (9
) occurs, it interferes with the mosaic structure of the screen (2) of the color cathode ray tube (1) due to the difference in refractive index with the surrounding casting resin (7), causing that part to appear sparkling. In other words, the sparkle phenomenon occurs and the color cathode ray tube (
1) had the disadvantage of significantly degrading the screen quality.
この発明は上記のような問題点を解消するためになされ
たもので、注型樹脂の硬化むらの発生を防止して、画面
品位を向上することができるカラーブラウン管の製造方
法を提供することを目的とする。This invention was made in order to solve the above-mentioned problems, and it is an object of the present invention to provide a method for manufacturing a color cathode ray tube that can prevent the occurrence of uneven curing of the casting resin and improve the screen quality. purpose.
この発明にかかるカラーブラウン管の製造方法は、カラ
ーブラウン管の画面と、透明板との間に形成された樹脂
注入口から注入充填した透明注型樹脂が、上記カラーブ
ラウン管の画面温度と、透明注型樹脂温度との温度差に
よって対流を開始する前の時間帯、もしくは、上記温度
差によって対流した透明注型樹脂が、上記温度差の解消
によって対流を中止した時点以降の時間帯に紫外線を照
射して上記透明注型樹脂を硬化することを特徴とする。In the method for manufacturing a color cathode ray tube according to the present invention, the transparent casting resin injected from the resin injection port formed between the screen of the color cathode ray tube and the transparent plate adjusts the temperature of the screen of the color cathode ray tube and the transparent casting. Ultraviolet rays are irradiated during the time period before convection starts due to the temperature difference with the resin temperature, or after the time period when the transparent casting resin that has convected due to the temperature difference stops convection due to the temperature difference eliminated. The method is characterized in that the transparent casting resin is cured.
この発明においては、カラーブラウン管の画面と、透明
板との間に樹脂注入口から注入充填された透明注型樹脂
の硬化手段として、注入充填された透明注型樹脂が対流
を開始する前の時間帯、もしくは対流を中止した時点以
降の時間帯に紫外線を照射することによシ、特に樹脂注
入口付近の未硬化樹脂が下方に引き込まれて対流するよ
うなことがなく、透明注型樹脂が均一に硬化されて、硬
化むらの発生が防止される。In this invention, as a means for curing the transparent casting resin injected from the resin injection port between the screen of the color cathode ray tube and the transparent plate, the time period before the injected transparent casting resin starts convection is used. By irradiating ultraviolet rays during the time period after stopping the convection, the uncured resin, especially near the resin injection port, will not be drawn downward and cause convection, and the transparent casting resin will be Uniform curing prevents uneven curing.
以下、この発明の一実施例を図面にもとづいて説明する
。Hereinafter, one embodiment of the present invention will be described based on the drawings.
第１図はこの発明の一実施例によるカラーブラウン管の
製造工程のうち、カラーブラウン管の画面と、透明板と
の間に形成された樹脂注入口から注入充填した透明注型
樹脂の硬化要領を示す図であシ、同図において第８図（
ａ） 、 （ｂ）および（Ｃ）で示す従来のものと同一
または相当部分には、同一の符号を付して、その詳しい
説明は省略する。FIG. 1 shows a procedure for curing transparent casting resin injected through a resin injection port formed between the screen of a color cathode ray tube and a transparent plate, in the manufacturing process of a color cathode ray tube according to an embodiment of the present invention. In the figure, Figure 8 (
The same reference numerals are given to the same or equivalent parts as in the conventional one shown in a), (b) and (C), and detailed explanation thereof will be omitted.
また、この発明のカラーブラウン管の製造方法は、カラ
ーブラウン管と透明板との間に充填された注型樹脂の硬
化方法に関するものでメジ、カラーブラウン管と透明板
との貼シ合わせ方法については、第３図（ａ） 、 （
ｂ）および（ｃ）で示す従来のものと同一のため、その
説明は省略する＝
第１図は、第８図（！Ｌ）および第８図中）の工程を経
たカラーブラウン管（１）の画面（２）と、透明板（３
）との間に、シール樹脂（５）の樹脂注入口（４）から
透明な紫外線硬化型アクリル樹脂系の透明注型樹脂（７
）を注入充填した直後の状態を示している。The method for manufacturing a color cathode ray tube of the present invention relates to a method for curing a casting resin filled between a color cathode ray tube and a transparent plate. Figure 3 (a), (
Since it is the same as the conventional one shown in b) and (c), its explanation will be omitted. Figure 1 shows a color cathode ray tube (1) that has gone through the process shown in Figure 8 (!L) and in Figure 8). Screen (2) and transparent plate (3)
), from the resin injection port (4) of the sealing resin (5), a transparent ultraviolet curing type acrylic resin based transparent casting resin (7
) is shown immediately after injection and filling.
このように注入充填された直後の透明注型樹脂（７）の
温度とカラーブラウン管（１）の画面温度、および透明
注型樹脂（７）の温度と作業室の環境温度等に温度差が
あるため、樹脂注入口付近の未硬化樹脂（１２）が下方
に引き込まれて透明注型樹脂（７）に対流（１１）が生
じるが、この発明は、注入充填した透明注型樹脂が対流
（１１）を開始する前の時間帯、もしくは上記温度差に
よって対流した透明注型樹脂が、上記温度差の解消によ
って対流を中止した時点以降の時間帯に紫外線をこの透
明注型樹脂に照射することによシ、上記透明合成樹脂（
７）を硬化させて、透明板（３）をカラーブラウン管（
１）の画面（２）に貼シ合わせ固定する。There is a temperature difference between the temperature of the transparent casting resin (7) immediately after injection and filling, the screen temperature of the color cathode ray tube (1), and the temperature of the transparent casting resin (7) and the environmental temperature of the work room. Therefore, the uncured resin (12) near the resin injection port is drawn downward and convection (11) occurs in the transparent casting resin (7). ), or during the time period after the time when the transparent casting resin that has been convected due to the temperature difference stops convection due to the elimination of the temperature difference, the transparent casting resin is irradiated with ultraviolet rays. Okay, the above transparent synthetic resin (
7) is cured and the transparent plate (3) is placed on a color cathode ray tube (
Paste and fix on the screen (2) of 1).
このような硬化手段によるときは、第１図中の（１１）
で示すような注型樹脂（７）の対流中に透明合成樹脂が
次第に硬化することがなくなシ、これによって、硬化む
らが発生せず、画面品位の高い防爆型カラーブラウン管
を製造できる。When using such a curing method, (11) in Figure 1
The transparent synthetic resin does not gradually harden during the convection of the casting resin (7) as shown in , and as a result, uneven hardening does not occur, and an explosion-proof color cathode ray tube with high screen quality can be manufactured.
なお、第２図は、透明注型樹脂（７）の温度とカラーブ
ラウン管（１）の画面温度、または透明注型樹脂（７）
の温度と作業室の環境温度等に温度差をパラメータとし
て、透明注型樹脂充填後の紫外線照射時間と、カラーブ
ラウン管のきら発生率の関係の実験結果を示す特性図で
あシ、上記温度差による透明注型樹脂の対流が最もはげ
しくなる１５分後付近で硬化を完了したカラーブラウン
管のきら発生率はほぼ１００％であった。In addition, Figure 2 shows the temperature of the transparent casting resin (7) and the screen temperature of the color cathode ray tube (1), or the temperature of the transparent casting resin (7).
This is a characteristic diagram showing the experimental results of the relationship between the ultraviolet irradiation time after filling with transparent casting resin and the incidence of glare on a color cathode ray tube, using the temperature difference between the temperature and the environmental temperature of the work room as a parameter. The incidence of scratches on color cathode ray tubes that completed curing after about 15 minutes, when the convection of the transparent casting resin became most intense, was almost 100%.
この第２図に示す特性図で明らかなように、上記対流（
１１）を開始する前、すなわち、カラーブラウン管（１
）の画面（２）と、透明板（３）との間に透明注型樹脂
（７）を注入充填した直後の５分以内の時間帯、もしく
は上記温度差によって対流した透明注型樹脂が、上記温
度差の解消によって対流を中止した以降、すなわち、カ
ラーブラウン管（１）の画面（２）と、透明板（３）と
の池に透明注型樹脂（７）を注入充填した後、３０分以
降の時間帯に紫外線を照射すれば、透明注型樹脂（７）
が無対流のときに硬化するため硬化むらが発生すること
がない。As is clear from the characteristic diagram shown in Fig. 2, the convection (
11), that is, before starting the color cathode ray tube (1
) within 5 minutes immediately after injecting and filling the transparent casting resin (7) between the screen (2) of 30 minutes after the convection was stopped due to the elimination of the temperature difference, that is, after the transparent casting resin (7) was injected into the pond between the screen (2) of the color cathode ray tube (1) and the transparent plate (3). If UV rays are irradiated during the following hours, transparent casting resin (7)
Because it cures when there is no convection, uneven curing does not occur.
なお、上記実施例では注型樹脂（７）として、紫外線硬
化型アクリル系樹脂および熱硬化性シリコン樹脂を用い
たもので示したが、紫外線硬化型シリコン樹脂、熱硬化
性ポリエステル樹脂、熱硬化性エポキシ樹脂、紫外線硬
化型ウレタン樹脂などを用いても同様の効果が得られる
。In addition, in the above example, an ultraviolet curable acrylic resin and a thermosetting silicone resin were used as the casting resin (7), but an ultraviolet curable silicone resin, a thermosetting polyester resin, a thermosetting resin Similar effects can be obtained by using epoxy resin, ultraviolet curable urethane resin, or the like.
また、紫外線光源（６）としては、上記実施例で示した
ケミカルランプ以外に、水銀ランプ、メタルハライドラ
ンプ、キセノンランプであってもよい。Further, as the ultraviolet light source (6), a mercury lamp, a metal halide lamp, or a xenon lamp may be used in addition to the chemical lamp shown in the above embodiment.
以上のように、この発明によれば、カラーブラウン管と
透明注型樹脂との温度差および透明注型樹脂と環境との
温度差等によって透明注型樹脂に対流が生じても、この
対流が生じない時間帯に紫外線を照射して透明注型樹脂
を硬化させることによって、注入口付近に屈折率の差に
よって生ずる硬化むら、つｔｂ、きらの発生を防止でき
、したがって、画面品位の非常に優れたカラーブラウン
管を得ることができる。As described above, according to the present invention, even if convection occurs in the transparent casting resin due to a temperature difference between the color cathode ray tube and the transparent casting resin, a temperature difference between the transparent casting resin and the environment, etc., this convection does not occur. By curing the transparent casting resin by irradiating it with ultraviolet rays during off-peak hours, it is possible to prevent uneven curing, spots, and glare caused by differences in refractive index near the injection port, resulting in extremely high screen quality. You can get a color cathode ray tube.
第１図はこの発明方法の一実施例を示す要部の断面図、
第２図は紫外線照射時間と、カラーブラウン管のきら発
生率の関係を示す特性図、第３図（＆）〜（Ｃ）は従来
方法を工程順に示す要部の斜視図、第４図は従来方法の
欠点を説明するための要部の拡大断面図である。
（１）・・・カラーブラウン管、（２）・・・画面、（
３）・・・透明板、（４）・・・樹脂注入口、（７）・
・・透明注型樹脂、（１１）・・・対流。
なお、図中、同一符号は同一または相当部分を示す。FIG. 1 is a sectional view of the main parts showing an embodiment of the method of this invention;
Figure 2 is a characteristic diagram showing the relationship between ultraviolet irradiation time and the incidence of glare in color cathode ray tubes, Figures 3 (&) to (C) are perspective views of the main parts showing the conventional method in order of process, and Figure 4 is the conventional method. FIG. 3 is an enlarged sectional view of a main part for explaining the drawbacks of the method. (1)...Color cathode ray tube, (2)...Screen, (
3)...Transparent plate, (4)...Resin injection port, (7)...
...Transparent casting resin, (11)...Convection. In addition, in the figures, the same reference numerals indicate the same or corresponding parts.
Claims (5)
画面前方に所定間隔を隔てて配置したガラスなどの透明
板とを、それらの周囲の１部にのみ透明樹脂の注入口を
残す状態に積層したのち、上記注入口から透明注型樹脂
を注入充填し、そののち上記注入口を開口したまま、上
記透明注型樹脂を硬化させるカラーブラウン管の製造方
法において、上記樹脂注入口から注入充填した透明注型
樹脂が、上記カラーブラウン管の画面温度と透明注型樹
脂温度との温度差によって対流を開始する前の時間帯、
あるいは上記温度差によって対流した透明注型樹脂が、
上記温度差の解消によって対流を中止した時点以降の時
間帯に紫外線を照射して硬化することを特徴とするカラ
ーブラウン管の製造方法。(1) After laminating a color cathode ray tube and a transparent plate such as glass placed at a predetermined interval in front of the screen of the color cathode ray tube in such a way that a transparent resin injection port is left only in a part of the periphery. , in a method for manufacturing a color cathode ray tube, in which a transparent casting resin is injected and filled through the injection port, and then the transparent casting resin is cured while the injection port is left open, the transparent casting mold is injected and filled from the resin injection port; The time period before the resin starts convection due to the temperature difference between the screen temperature of the color cathode ray tube and the transparent casting resin temperature,
Or, the transparent casting resin caused by convection due to the above temperature difference,
A method for manufacturing a color cathode ray tube, characterized in that curing is performed by irradiating ultraviolet rays during a time period after the time when convection is stopped due to the elimination of the temperature difference.
は、透明注型樹脂の注入充填後５分以内である特許請求
の範囲第１項記載のカラーブラウン管の製造方法。(2) The method for manufacturing a color cathode ray tube according to claim 1, wherein the time period before the transparent casting resin starts convection is within 5 minutes after the transparent casting resin is injected and filled.
時間帯は、透明注型樹脂の注入充填後３０分以降である
特許請求の範囲第１項記載のカラーブラウン管の製造方
法。(3) The method for manufacturing a color cathode ray tube according to claim 1, wherein the time period after the time when the transparent casting resin stops convection is 30 minutes after the transparent casting resin is injected and filled.
安全ガラスである特許請求の範囲第１項に記載のカラー
ブラウン管の製造方法。(4) The method for manufacturing a color cathode ray tube according to claim 1, wherein the transparent plate is a safety glass for preventing implosion of the cathode ray tube.
の範囲第１項に記載のカラーブラウン管の製造方法。(5) The method for manufacturing a color cathode ray tube according to claim 1, wherein the transparent plate is antireflection glass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15165187A JPS63314746A (en) | 1987-06-17 | 1987-06-17 | Manufacture of cathode-ray tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15165187A JPS63314746A (en) | 1987-06-17 | 1987-06-17 | Manufacture of cathode-ray tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63314746A true JPS63314746A (en) | 1988-12-22 |
Family
ID=15523230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15165187A Pending JPS63314746A (en) | 1987-06-17 | 1987-06-17 | Manufacture of cathode-ray tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63314746A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001041175A3 (en) * | 1999-12-02 | 2001-12-13 | Koninkl Philips Electronics Nv | Method of manufacturing a display device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62113334A (en) * | 1985-11-08 | 1987-05-25 | Mitsubishi Electric Corp | Manufacture of explosion-proof cathode-ray tube |
-
1987
- 1987-06-17 JP JP15165187A patent/JPS63314746A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62113334A (en) * | 1985-11-08 | 1987-05-25 | Mitsubishi Electric Corp | Manufacture of explosion-proof cathode-ray tube |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001041175A3 (en) * | 1999-12-02 | 2001-12-13 | Koninkl Philips Electronics Nv | Method of manufacturing a display device |
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