JPH02143759U - - Google Patents

Description

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

第１図はこの考案の第１の実施例を示す平面図
、第２図は第１図−線矢視拡大断面図、第３
図はスクリーンの位置とドーミングによる色ずれ
の目立ち易さの裕度の関係を示す図、第４図ａ，
ｂはそれぞれ異なるこの考案の実施例の平面図、
第５図は従来のカラー受像管の一例を示す一部切
欠き断面図、第６図はシヤドウマスクのドーミン
グを説明するための図、第７図および第８図はド
ーミングによるミスレジスター量の分布を示す特
性図、第９図は単板によるシヤドウマスクの一部
拡大断面図、第１０図はシヤドウマスクの板厚と
ミスレジスターとの関係を示す特性図、第１１図
は従来の複板によるシヤドウマスクの一部拡大断
面図である。 ４…シヤドウマスク、４Ａ…有孔部、４Ｂ…非
有孔部、４Ｃ…スカート部、７…フレーム、１０
…第１の金属板、２２…第２の金属板。なお、各
図中、同一符号は同一または相当部分を示す。 Fig. 1 is a plan view showing the first embodiment of this invention, Fig. 2 is an enlarged cross-sectional view taken along the line shown in Fig.
The figure shows the relationship between the screen position and the degree of conspicuousness of color shift due to doming, Figure 4a,
b is a plan view of each different embodiment of this invention;
Figure 5 is a partially cutaway sectional view showing an example of a conventional color picture tube, Figure 6 is a diagram for explaining doming of a shadow mask, and Figures 7 and 8 are diagrams showing the distribution of the amount of misregistration due to doming. FIG. 9 is a partially enlarged sectional view of a shadow mask made of a single plate, FIG. 10 is a characteristic diagram showing the relationship between the thickness of the shadow mask and the misregistration, and FIG. 11 is a diagram of a conventional shadow mask made of multiple plates. FIG. 4...Shadow mask, 4A...Perforated part, 4B...Non-perforated part, 4C...Skirt part, 7...Frame, 10
...first metal plate, 22...second metal plate. In each figure, the same reference numerals indicate the same or corresponding parts.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 薄い金属板で形成され、有孔部とその外周縁に
延在する非有孔部およびその外周縁につづくスカ
ート部とを有する第１の部材と、この第１の部材
より厚い金属板で形成され、上記非有孔部および
これにつづく有孔部の外周部を上記第１の部材に
接合されて構成する第２の部材とよりなるシヤド
ウマスク。 A first member made of a thin metal plate and having a perforated part, a non-perforated part extending to the outer peripheral edge of the perforated part, and a skirt part continuing to the outer peripheral edge of the first member, and a metal plate thicker than the first member. and a second member configured by joining the first member to the outer periphery of the non-perforated portion and the adjacent perforated portion.