公开(公告)号：DE69718825D1

公开(公告)日：2003-03-06

申请号：DE69718825

申请日：1997-10-17

Applicant: CANDESCENT INTELLECTUAL PROP

Inventor： HANSEN L ,  SPINDT J ,  FIELD E

IPC: H01J1/304 ,  G09G3/20 ,  G09G3/22 ,  H05B37/00

Abstract: A voltage-adjustment section (20) of an electronic device converts an input control voltage (V1) into an output control voltage (V0) in such a way that a collector current (ICP) form with electrons emitted from an emitter (EP) of an emission/collection cell (26), or triode, varies in a desired, typically linear, manner with the input control voltage. The triode further includes a collector (CP) that carries the collector current and a gate electrode (GP) that regulates the collector current as a function of the output control voltage. Control of the collector current so as to achieve the desired current/voltage relationship is achieved with an analog control loop containing the triode and an amplifier (28) coupled between the triode's collector and gate electrode. The triode thus typically has a linear gamma characteristic relative to the input control voltage. The voltage-adjustment section is suitable for use in a display device such as a flat-panel display.