| 摘要 |
<p>Apparatus (100) and methods of focusing and to steering a group of electrons emitted from an electron source (112) to a shield (102). In a preferred embodiment, the apparatus (100) includes an electron source controlled by one or more voltages to emit electrons, a first electrode (114) adjacent to one side of the source (112), and a second electrode (108), insulated from the first electrode (114), adjacent to an opposite side of the source (112). The shield (102) has a shield voltage. The first (114) and the second (108) electrode have a first and a second voltage respectively to focus and steer a substantial portion of the emitted electrons towards the shield (102). One application of the present invention is in the area of flat panel displays with the shield (102) being a screen. <IMAGE></p> |
