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    • 6. 发明授权
    • Light weight shadow mask and method of manufacturing
    • 重量轻的荫罩和制造方法
    • US5552662A
    • 1996-09-03
    • US312867
    • 1994-09-27
    • Akira MakitaYutaka MatsumotoTakahito Aoki
    • Akira MakitaYutaka MatsumotoTakahito Aoki
    • H01J9/14H01J29/07H01J9/00
    • H01J9/142H01J2229/0761
    • An aperture grill for a cathode ray tube is formed with parallel slits by etching a cold-rolled low-carbon steel plate from the opposite sides thereof. Before carrying out the etching, the steel plate is subjected to an annealing step whereby the residual stress is reduced to 7.0 Kg/mm.sup.2 or less. The steel plate is also subjected to a tensile force for imparting a tension in the direction of the rolling of a hoop steel from which the steel plate is produced. Furthermore, the steel plate is so oriented that the direction of tapes of the aperture grill to be produced will coincide with the rolling direction. The above process makes it possible to prevent occurrence of "streaks" and improves the quality of images generated on the cathode ray tube.
    • 用于阴极射线管的孔格栅通过从其相对侧蚀刻冷轧低碳钢板而形成有平行狭缝。 在进行蚀刻之前,对钢板进行退火工序,残留应力降低到7.0Kg / mm 2以下。 钢板也受到张力的作用,该拉力用于在制造钢板的环形钢的轧制方向上施加张力。 此外,钢板的取向使得要生产的孔格栅的带的方向与轧制方向一致。 上述过程使得可以防止“条纹”的发生并且提高在阴极射线管上产生的图像的质量。
    • 7. 发明授权
    • Method of producing aperture grill
    • 生产孔格栅的方法
    • US5709804A
    • 1998-01-20
    • US658607
    • 1996-06-05
    • Akira MakitaYutaka MatsumotoTakahito Aoki
    • Akira MakitaYutaka MatsumotoTakahito Aoki
    • H01J9/14H01J29/07H01J9/00B44C1/22
    • H01J9/142H01J2229/0761
    • An aperture grill for a cathode ray tube is formed with parallel slits by etching a cold-rolled low-carbon steel plate from the opposite sides thereof. Before carrying out the etching, the steel plate is subjected to an annealing step whereby the residual stress is reduced to 7.0 Kg/mm.sup.2 or less. The steel plate is also subjected to a tensile force for imparting a tension in the direction of the rolling of a hoop steel from which the steel plate is produced. Furthermore, the steel plate is so oriented that the direction of tapes of the aperture grill to be produced will coincide with the rolling direction. The above process makes it possible to prevent occurrence of "streaks" and improves the quality of images generated on the cathode ray tube.
    • 用于阴极射线管的孔格栅通过从其相对侧蚀刻冷轧低碳钢板而形成有平行狭缝。 在进行蚀刻之前,对钢板进行退火工序,残留应力降低到7.0Kg / mm 2以下。 钢板也受到张力的作用,该拉力用于在制造钢板的环形钢的轧制方向上施加张力。 此外,钢板的取向使得要生产的孔格栅的带的方向与轧制方向一致。 上述过程使得可以防止“条纹”的发生并且提高在阴极射线管上产生的图像的质量。