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    • 4. 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。
    • 6. 发明授权
    • Shadow mask for a cathode ray tube
    • 阴影射线管阴影掩模
    • US06922010B2
    • 2005-07-26
    • US09964189
    • 2001-09-26
    • Takayasu KomatsuHirofumi HideshimaAkira MakitaYutaka MatsumotoTakuya Ogio
    • Takayasu KomatsuHirofumi HideshimaAkira MakitaYutaka MatsumotoTakuya Ogio
    • H01J29/07H01J29/80
    • H01J29/07H01J2229/0755
    • The present invention provides a shadow mask having an improved resistance to an impact such as vibration or dropping so as to keep a constant quality of a color cathode-ray tube. The object is achieved by a shadow mask in which throughholes are formed, each of the throughholes 2a and 2b having a rear side hole portion 4a or 4b through which an electron beam enters and a front side hole portion 3a or 3b through which the electron beam is emitted so as to form a beam spot having a prescribed shape on a surface to be irradiated; wherein, each of the throughholes 2a and 2b has a ridge portion 8, 8b or 8e formed by intersection of a taper surface 10, 10b or 10e of the rear side hole portion 4a or 4b and a taper surface 6, 6b or 6e of the front side hole portion 3a or 3b; the taper size T represented by a value a half the difference between the hole width S at end 7, 7b or 7e of the front side hole portion 3a or 3b and the hole width Q at the ridge portion 8, 8b or 8e is within a range of from 30 to 40% of the thickness t of the shadow mask; and the ridge portion is formed at a sectional height of up to 35 μm from the end 9 of the rear side hole portion 4a or 4b.
    • 本发明提供了一种具有改善的抵抗诸如振动或掉落的冲击的荫罩,从而保持彩色阴极射线管的质量不变。 该目的通过形成有通孔的荫罩实现,每个通孔2a和2b具有电子束进入的后侧孔部分4a或4b,以及前侧孔部分3a或3 b,通过该电子束发射电子束以在待照射的表面上形成具有规定形状的束斑; 其中,每个通孔2a和2b具有通过后侧孔部分4a或4b的锥形表面10,10b或10e与锥形部分相交形成的脊部分8,8b或8e, 前侧孔部分3a或3b的表面6,6b或6e; 锥形尺寸T由前侧孔部分3a或3b的端部7,7b或7e处的孔宽S与脊部8,8b之间的孔宽度Q之间的差的一半的值表示 或8e在荫罩的厚度t的30〜40%的范围内; 并且脊部形成为距后侧孔部分4a或4b的端部9的截面高度高达35μm。
    • 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。