公开(公告)号：JPS5863988A

公开(公告)日：1983-04-16

申请号：JP12519982

申请日：1982-07-20

Applicant: IBM

Inventor： DEPP STEVEN WADE ,  JULIANA ANTHONY JR

IPC: G02F1/133 ,  G02F1/1362 ,  G02F1/1368 ,  G09G3/20 ,  G09G3/36 ,  G09G3/38 ,  H01L21/336 ,  H01L29/78 ,  H01L29/786

Abstract: A flat panel display device comprises a matrix (10) of X and Y drive lines and a plurality of selecting field effect transistors (12). Each FET (12) is selectively operable by applying a potential across an individual pair of X and Y drive lines for controlling activation of a corresponding optical transducer (14). A high value resistor (15) is interposed in series between the gate electrode (G) of each selecting FET (12) and associated drive line to minimize the effect a short circuit caused by a defective gate electrode establishing an electrical connection between X and Y drive lines. The resistance is preferably provided by a segment of undoped polysilicon in a polysilicon circuit line connecting each gate electrode with the associated X drive line.

公开(公告)号：DE3266777D1

公开(公告)日：1985-11-14

申请号：DE3266777

申请日：1982-06-02

Applicant: IBM

Inventor： DEPP STEVEN WADE ,  JULIANA ANTHONY JR

IPC: G02F1/133 ,  G02F1/1362 ,  G02F1/1368 ,  G09G3/20 ,  G09G3/36 ,  G09G3/38 ,  H01L21/336 ,  H01L29/78 ,  H01L29/786 ,  G09G3/30 ,  G09G3/34

Abstract: A flat panel display device comprises a matrix (10) of X and Y drive lines and a plurality of selecting field effect transistors (12). Each FET (12) is selectively operable by applying a potential across an individual pair of X and Y drive lines for controlling activation of a corresponding optical transducer (14). A high value resistor (15) is interposed in series between the gate electrode (G) of each selecting FET (12) and associated drive line to minimize the effect a short circuit caused by a defective gate electrode establishing an electrical connection between X and Y drive lines. The resistance is preferably provided by a segment of undoped polysilicon in a polysilicon circuit line connecting each gate electrode with the associated X drive line.

公开(公告)号：CA1143780A

公开(公告)日：1983-03-29

申请号：CA349750

申请日：1980-04-14

Applicant: IBM

Inventor： JULIANA ANTHONY JR ,  KOEPCKE RICHARD W ,  MILLS ROSS N ,  TALKE FRANK E

IPC: B41J2/045 ,  B41J2/055 ,  G06K15/10 ,  G01D15/18

Abstract: A drop-on-demand ink jet printer in which the print head includes a cavity having a nozzle portion at one end and a transducer mounted to contract a wall portion of the cavity when energized by a suitable voltage drive pulse. The drive pulses are produced at a predetermined rate but at a selectively controlled amplitude in response to the print data. In cases where no drop is required to print the data, the drive pulse is at a lower amplitude than the threshold voltage level, and for the first drop to be formed following a time at which no drop was formed, the amplitude of the drive pulse is greater than the threshold voltage level, At steady state operation of producing drops in sequence, the amplitude of the drive pulses equals the threshold voltage level.