公开(公告)号：US3894332A

公开(公告)日：1975-07-15

申请号：US41863573

申请日：1973-11-23

Applicant: WESTINGHOUSE ELECTRIC CORP

Inventor： NATHANSON HARVEY C ,  THOMAS RICHARD N ,  GULDBERG JENS

IPC: H01J1/32 ,  H01J9/12 ,  H01J9/34 ,  H01J31/48 ,  H01J31/49 ,  B01J17/00

CPC classification number: B82Y10/00 ,  H01J1/32 ,  H01J9/12 ,  H01J9/34 ,  H01J31/48 ,  H01J31/49 ,  H01J2201/3423 ,  Y10S257/917 ,  Y10S438/978

Abstract: A solid state radiation sensitive field emitter cathode comprising a single crystal semiconductor member having a body portion with a uniform array of closely spaced and very sharp electron emitting projections from one surface in the form of needles or whisker like members. Electrons are emitted into vacuum when a planar-parallel positive anode is mounted in close proximity to the surface. The cathode is responsive to input radiation such as electrons or light directed onto the cathode in modifying the electron emission from the array of electron emitter projections. The method of manufacturing the cathode by providing a predetermined pattern or mosaic of islands of a material exhibiting a greater etch resistant property than the semiconductor material, on a wafer of a semiconductor material and then etching out between and beneath the islands to undercut to a point where the islands are supported by only a small whisker of the semiconductor material. Removal of the islands results in an electron emitter being exposed from beneath each island wherein carriers generated within the body portion and also carriers generated within the depletion regions of the tips deffuse to the electron emitter projections wherein establishment of a high electric field at the tips of the electron emitter projections results in electron emission primarily due to conduction band tunneling. The device provides about 106 emitting points of close proximity so as to effect photographic-like imaging.

Abstract translation: 一种固态辐射敏感场发射器阴极，其包括单晶半导体部件，该单晶半导体部件具有主体部分，其具有从针状或晶须状部件形式的一个表面以紧密间隔且非常尖锐的电子发射突起的均匀阵列。 当平面平行正极安装在表面附近时，电子发射成真空。 阴极响应于输入辐射，例如电子或指向阴极的光，以修改来自电子发射体投影阵列的电子发射。 通过在半导体材料的晶片上提供在半导体材料的晶片上提供具有比半导体材料更大的抗蚀刻性能的材料的岛的预定图案或镶嵌的制造阴极的方法，然后在岛之间和之下蚀刻以切割到点 其中岛仅由半导体材料的小晶须支撑。 去除岛导致电子发射体从每个岛下面暴露，其中在体部分内产生的载流子以及在尖端的耗尽区域内产生的载流子迁移到电子发射器突起，其中在尖端处建立高电场 电子发射器投影导致电子发射主要是由于导带隧穿。 该装置提供约106个发射点的紧密接近，以便实现照相式成像。

公开(公告)号：US3896338A

公开(公告)日：1975-07-22

申请号：US41188573

申请日：1973-11-01

Applicant: WESTINGHOUSE ELECTRIC CORP

Inventor： NATHANSON HARVEY C ,  GULDBERG JENS

IPC: G03F7/20 ,  H01J29/12 ,  H01J31/24 ,  H04N9/31 ,  H01J29/70

CPC classification number: G03F7/70291 ,  H01J29/12 ,  H01J31/24 ,  H04N9/3114

Abstract: A color video imaging system utilizing a cathode ray device with a target comprising an array of electrostatically deflectable light valves. The light valve structure and the arrangement of light valves as an array permits sequential activation of the light valves in response to a specific primary color video signal. The light valves are arranged in three element groupings, and a schlieren optical means is provided having respective primary color transmissive portions through which the light reflected from the deflected light valves is passed, to permit projection of a color image upon a display screen.

公开(公告)号：US3886310A

公开(公告)日：1975-05-27

申请号：US39047073

申请日：1973-08-22

Applicant: WESTINGHOUSE ELECTRIC CORP

Inventor： GULDBERG JENS ,  NATHANSON HARVEY C

IPC: G02B26/08 ,  G09F9/37 ,  H01J29/12 ,  H01J31/24 ,  H04N5/74 ,  H04N3/16 ,  G02F1/28

CPC classification number: H04N5/7425 ,  G02B26/0841 ,  G09F9/372 ,  H01J29/12

Abstract: An electrostatically deflectable light valve adapted for use in an array for producing television pictures as a projected image upon a large display screen. The light valve structure is such that a plurality of reflective wing portions are free to be deflected along directional axes which are at an angle to the prime directional axes of the overall array, so that light which is predominantly diffracted along the array axes may be decoupled or separated from the signal light produced by activated light valves and used to project the image. The contrast ratio of signal light to background light for the system is significantly improved, using this method of discrimination.

Abstract translation: 一种静电偏转光阀，适用于在大显示屏上产生电视图像作为投影图像的阵列。 光阀结构使得多个反射翼部分沿着与整个阵列的主方向轴成一角度的方向轴自由地偏转，使得主要沿着阵列轴衍射的光可以被去耦合 或与激活的光阀产生的信号光分离并用于投影图像。 使用这种辨别方法，可以显着提高信号光对背景光的对比度。