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1. 发明授权

US5159240A Low voltage limiting aperture electron gun 失效
标题翻译：低电压限制孔径电子枪
公开(公告)号：US5159240A
公开(公告)日：1992-10-27
申请号：US805378
申请日：1991-12-09
申请人： Hsing-Yao Chen , Sen-Su Tsai
发明人： Hsing-Yao Chen , Sen-Su Tsai
IPC分类号： H01J29/48
CPC分类号： H01J29/485
摘要： A limiting aperture disposed in a low voltage, beam forming region (BFR) of an electron gun in a cathode ray tube (CRT) provides reduced electron beam spot size with low power dissipation. The limiting aperture is located in a low voltage, electrostatic field-free region, preferably in the screen grid electrode G.sub.2, where the field-free region is formed by increasing the thickness of the screen grid electrode G.sub.2 to 1.8 times the diameter of a pair of circular recessed portions in opposing surfaces of the screen grid electrode G.sub.2 which are separated by the small diameter limiting aperture on the electron gun's axis through which the beam is directed. A narrow, relatively electrostatic field-free zone is thus formed in the center of the screen grid electrode G.sub.2 which is maintained at a relatively low voltage, i.e., ranging from approximately 300 V to less than 12% of the anode voltage. The outer electrons in the relatively low energy electron beam are intercepted by the limiting aperture to provide a small, well defined beam spot size on the CRT screen.
摘要翻译：设置在阴极射线管（CRT）中的电子枪的低电压波束形成区域（BFR）中的限制孔径以低功率耗散提供减小的电子束斑点尺寸。限制孔径位于低电压，无静电场区域，优选位于屏栅格电极G2中，其中通过将丝网栅电极G2的厚度增加到一对直径的1.8倍而形成无场区域在栅极电极G2的相对表面中的圆形凹陷部分被电子枪的轴线上的小直径限制孔分隔开。因此，在屏栅格电极G2的中心形成窄的，相对静电的无场区，其保持在相对较低的电压，即从阳极电压的大约300V至小于12％的范围内。相对较低能量的电子束中的外部电子被限制孔截取，以在CRT屏幕上提供一个很小的，明确定义的束斑尺寸。

2. 发明授权

US5241240A Hollow chain link main lens design for color CRT 失效
标题翻译：空心链式主镜设计为彩色CRT
公开(公告)号：US5241240A
公开(公告)日：1993-08-31
申请号：US890836
申请日：1992-06-01
申请人： Hsing-Yao Chen , Sen-Su Tsai
发明人： Hsing-Yao Chen , Sen-Su Tsai
IPC分类号： H01J29/48 , H01J29/50
CPC分类号： H01J29/503 , H01J2229/4872 , H01J2229/4896
摘要： An inline electron gun for use in a multi-beam color cathode ray tube (CRT) has a main focus lens for focusing the electron beams on a display screen of the CRT. The main focus lens includes adjacent charged electrodes each having chain link-type common lens apertures through which the electron beams are directed and which are in facing relation for reducing horizontal spherical aberration of the electron beams on the CRT display screen, where each common lens aperture has a longitudinal axis aligned with the inline electron beams. Each common lens aperture includes spaced, vertically enlarged portions, each aligned with a respective electron beam, for correcting for vertical spherical aberration of the electron beams. Increasing the vertical dimension of that portion of each of the common lens apertures aligned with a respective electron beam reduces the vertical spot size of the electron beam without degrading other electron gun operating characteristics. The chain link-type common lens is defined by a thin peripheral side wall parallel to the beam axis which may also be used in other embodiments such as in combination with facing conventional solid (double side wall) or hollow (single side wall) common lens structures in adjacent electrodes in the main focus lens. The chain link-type common lens aperture may be either disposed in an inwardly directed end wall of the electrode or it may be defined by a straight side wall of the electrode aligned with the electron gun axis.
摘要翻译：用于多光束彩色阴极射线管（CRT）的直列电子枪具有用于将电子束聚焦在CRT的显示屏上的主聚焦透镜。主聚焦透镜包括相邻的带电电极，每个相邻的带电极具有链节型共透镜孔，电子束通过它们被引导并且处于面对关系，以减小CRT显示屏上的电子束的水平球面像差，其中每个公共透镜孔具有与直列电子束对准的纵轴。每个公共透镜孔包括间隔开的垂直放大的部分，每个部分与相应的电子束对准，用于校正电子束的垂直球面像差。增加与各个电子束对准的每个公共透镜孔的那部分的垂直尺寸减小了电子束的垂直光斑尺寸，而不降低其他电子枪的操作特性。链节型共透镜由平行于光束轴的薄的周边侧壁限定，其也可以用于其它实施例中，例如与面对常规固体（双侧壁）或中空（单侧壁）共透镜在主焦点透镜中的相邻电极中的结构。链节型共透镜孔可以设置在电极的向内的端壁中，或者可以由与电子枪轴对准的电极的直的侧壁限定。

3. 发明授权

US5394054A Electron gun with electrostatic shielding and method of assembly therefor 失效
标题翻译：具有静电屏蔽的电子枪及其组装方法
公开(公告)号：US5394054A
公开(公告)日：1995-02-28
申请号：US92961
申请日：1993-07-19
申请人： Hsing-Yao Chen , Sen-Su Tsai
发明人： Hsing-Yao Chen , Sen-Su Tsai
IPC分类号： H01J29/48 , H01J29/51
CPC分类号： H01J29/485 , H01J29/484
摘要： An electron gun such as used in a cathode ray tube (CRT) includes an Einzel lens having charged G3, G4 and G5 grids for focusing an electron beam on the CRT's display screen. The G3, G4 and G5 grids are cylindrical and have the same inner diameter, with their respective longitudinal axes colinear and aligned with the electron beam axis. Where T is the thickness of a grid and L is the G3-G4 or G4-G5 spacing, or gap, shielding against stray electrostatic fields within the grids arising from stray electrons on either a grid-supporting glass bead or on the inner surface of the CRT's neck portion is provided by maintaining the relationship 3.0.gtoreq.T/L.gtoreq.0.75. Another embodiment employs thinner grids having a thickness t with outward turned end flanges, or folded edges, disposed about facing edges of adjacent grids having a thickness T, where T>t and the above-stated relationship of T/L is maintained. A common inner diameter of each grid facilitates alignment of the grids using a cylindrical mandrel disposed within and supporting the grids during electron gun assembly.
摘要翻译：诸如在阴极射线管（CRT）中使用的电子枪包括具有充电的G3，G4和G5格栅的Einzel透镜，用于将电子束聚焦在CRT显示屏上。 G3，G4和G5格栅是圆柱形的并且具有相同的内径，它们各自的纵轴线与电子束轴线对准。其中T是网格的厚度，L是G3-G4或G4-G5间距或间隙，屏蔽由网格支撑的玻璃珠或内表面上的杂散电子产生的网格内的杂散静电场通过维持关系3.0> / = T / L> / = 0.75来提供CRT的颈部。另一实施例采用具有厚度t的较薄的栅格，其具有向外转动的端部凸缘或折叠边缘，其设置在具有厚度T的相邻格栅的相对边缘周围，其中保持T> t和上述T / L的关系。每个栅格的共同内径有助于使用在电子枪组装期间设置在其内并支撑栅格的圆柱形心轴对准栅格。

4. 发明授权

US5399933A Magnetic beam adjusting rings with different thickness 失效
标题翻译：不同厚度的磁力调节环
公开(公告)号：US5399933A
公开(公告)日：1995-03-21
申请号：US063736
申请日：1993-05-20
申请人： Sen-Su Tsai
发明人： Sen-Su Tsai
IPC分类号： H01J29/70
CPC分类号： H01J29/703
摘要： A pair of ring-shaped magnets, or magnetic pole pieces, having the same magnetic field strength, or magnetic flux density, are disposed about the neck portion of a cathode ray tube (CRT) for statically converging a plurality of inline electron beams on the CRT's faceplate. The magnetic ring pair includes an inlet ring magnet facing the CRT's base and an outlet ring magnet facing the CRT's faceplate, with the inlet ring magnet having a thickness greater than that of the outlet ring magnet along the CRT's longitudinal axis. The inlet ring magnet thus exerts a larger off-axis force on the electron beam than the outlet ring magnet because of the longer beam path in the inlet ring magnet to permit the magnetic ring pair to apply a maximum convergence correction for substantially misconverged electron beams and a minimum convergence correction when the beams are in convergence. The pair of ring magnets may also be used in a color purity magnet assembly to adjust electron beam convergence to provide a high degree of color purity.
摘要翻译：具有相同磁场强度或磁通密度的一对环形磁体或磁极片被设置在阴极射线管（CRT）的颈部周围，用于使多个在线电子束静态会聚在 CRT的面板。磁环对包括面向CRT基座的入口环磁体和面向CRT面板的出口环磁体，入口环磁体的厚度大于沿着CRT纵轴的出口环磁体的厚度。因为入口环磁体因此在出口环磁体上对电子束施加更大的离轴力，因为入口环磁体中的较长的射束路径允许磁环对对基本上错误的电子束施加最大的会聚校正，当光束收敛时的最小会聚校正。该一对环形磁体也可用于彩色纯度磁体组件中以调节电子束会聚以提供高度的色纯度。

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