公开(公告)号：EP0040450A1

公开(公告)日：1981-11-25

申请号：EP81200509.8

申请日：1981-05-13

Applicant: Philips Electronics N.V.

Inventor： Fransen, Jan Josephus Bernardus

IPC: H01J29/94

CPC classification number: H01J29/94

Abstract: In a method of manufacturing a picture display tube a gettering device is used which comprises a first metal holder (1, 20) and a second metal holder (3, 28). A source (2, 21) of evaporable gettering metal is accommodated in the first metal holder (1, 20) from which the gettering metal can be released by inductive heating. A gas source (6) of a material having a comparatively high decomposition temperature and releasing gas upon heating is accommodated in the second metal holder. The second metal holder is connected to an outer surface (7, 30) of the first metal holder in such manner that the second metal holder forms an electric shunt for the induction currents generated in the first metal holder by the inductive heating. In this manner it is achieved that during the inductive heating the temperature of the second metal holder and its contents lead with respect to that of the contents of the first metal holder. As a result of this the gas releasing material (6) releases its gas before the gettering metal begins to evaporate from the source (2, 21) of gettering metal.
The invention is suitable in particular for use in the manufacture of colour display tubes in which the gettering device is assembled in the tube before the window (12) and the cone (11) of the colour display tube are connected together by means of a sealing glass (18).

公开(公告)号：EP0036681B1

公开(公告)日：1983-04-13

申请号：EP81200228.5

申请日：1981-02-25

Applicant: Philips Electronics N.V.

Inventor： Fransen, Jan Josephus Bernardus

IPC: H01J29/94 ,  H01J7/14

CPC classification number: H01J29/94 ,  H01J7/18 ,  H01J9/40

公开(公告)号：EP0040450B1

公开(公告)日：1984-05-09

申请号：EP81200509.8

申请日：1981-05-13

Applicant: Philips Electronics N.V.

Inventor： Fransen, Jan Josephus Bernardus

IPC: H01J29/94

CPC classification number: H01J29/94

公开(公告)号：EP0036681A1

公开(公告)日：1981-09-30

申请号：EP81200228.5

申请日：1981-02-25

Applicant: Philips Electronics N.V.

Inventor： Fransen, Jan Josephus Bernardus

IPC: H01J29/94 ,  H01J7/14

CPC classification number: H01J29/94 ,  H01J7/18 ,  H01J9/40

Abstract: The invention relates to a method of manufacturing a colour television display tube the envelope of which comprises a conical portion (11) and a window portion (12) which are sealed together in a vacuum-tight manner by means of a sealing glass (18). Before said portions are sealed together, a gettering device (21) is assembled in a place inside the envelope of the tube, for example to the internal magnetic screening cap (17) or the high-voltage contact (26). The gettering device (21) comprises a source of evaporable gettering metal and at least one gas source of a material releasing gas upon heating. The gas-releasing material (5) is protected from the influence of moist air at comparatively high temperature by means of a layer of metal (6) provided on the grains of the gas-releasing material (5). As a result of this the gettering device (21) is suitable for being assembled in a television display tube before the window (12) and the cone (11) of the tube have been sealed together by means of a sealing glass (18).

Abstract translation: 本发明涉及制造彩色电视显象管哪个的包络包括一个锥形部分（11）和由密封玻璃进行密封一起在一个真空密封的方式的窗部（12）的方法（18） ， 前面所说的部分密封在一起，一个吸气装置（21）被组装在一个地方管的封套内，例如以内部磁性屏蔽帽（17）或高电压触点（26）。 吸气装置（21）包括可蒸发吸气金属和至少一种25，为在加热时释放气体的材料的源的源。 所述气体释放材料（5）是从潮湿空气的影响在比较高的温度下的金属层的保护手段（6）设置在所述气体释放材料（5）的颗粒。 作为该吸气装置（21）的结果是适合于被组装在电视显示管上的窗口（12）和该管的锥体（11）已经由密封玻璃（18）的方式密封在一起之前。