公开(公告)号：US5274687A

公开(公告)日：1993-12-28

申请号：US957149

申请日：1992-10-07

申请人： Masahide Hirama

发明人： Masahide Hirama

IPC分类号： H01L27/148 ,  H04N5/335 ,  H04N5/357 ,  H04N5/369 ,  H04N5/3728 ,  G11L19/28

CPC分类号： H04N5/335

摘要： The present invention is directed to an output circuit for a charge transfer device which can reduce a coupling voltage of a floating diffusion type charge detecting section and in which a DC fluctuation of an output from a source-follower stage can be suppressed. A dummy floating diffusion region (FD2) is provided and an output thereof is converted by and derived from a bias generator circuit (7) of a source-follower configuration as a positive phase output. This positive phase output is supplied to a load MOS transistor (Q.sub.2) of a source-follower circuit (5) as a bias voltage and also fed back to the load MOS transistor (Q.sub.6) of the bias generator circuit (7) as a gate voltage.

摘要翻译： 本发明涉及一种电荷转移装置的输出电路，其能够降低浮动扩散型电荷检测部分的耦合电压，并且可以抑制源极跟随器级的输出的DC波动。 提供虚拟浮动扩散区（FD2），其输出由源极跟随器结构的偏置发生器电路（7）转换并衍生为正相输出。 该正相输出被提供给源极跟随器电路（5）的负载MOS晶体管（Q2）作为偏置电压，并且还被反馈到偏置发生器电路（7）的负载MOS晶体管（Q6）作为栅极 电压。

公开(公告)号：US5199053A

公开(公告)日：1993-03-30

申请号：US911936

申请日：1992-07-10

申请人： Masahide Hirama

发明人： Masahide Hirama

IPC分类号： H01L27/148 ,  H04N5/335

CPC分类号： H04N5/335 ,  H01L27/14831 ,  H04N3/1575

摘要： In a CCD element, the influence of a parasitic capacitance existing between a floating diffusion region and a reset gate section of an output section is suppressed to increase sensitivity. In a CCD element in which a floating diffusion region (7) is connected to the final stage of a charge transfer register (1) having a CCD structure through a horizontal output gate section (5) and a reset gate section (11) is disposed between the floating diffusion region (7) and a reset drain region (10), an output gate pulse (.phi..sub.HOG) having an anti-phase of a reset pulse (.phi..sub.RG) applied to the reset gate section (11) is applied to the horizontal output gate section (5). Further, an output waveform in a signal period in a CCD linear sensor can be made flat and a signal level difference between odd-numbered and even-numbered pixels can be improved. In a CCD linear sensor comprising a photo sensing region formed of a plurality of photo sensing elements (pixels), first and second horizontal transfer registers disposed at both sides of the photo sensing region through read-out gate sections, a floating diffusion region for alternately detecting signal charges transferred thereto from the first and second horizontal transfer registers as output signals and a reset gate section, a transfer section of the final stage portion of the first and second horizontal transfer registers is separated and phases of drive pulses (.phi.H.sub.1 '), (.phi.H.sub.2 ') applied to the transfer section of the final stage portion are shifted from those of drive pulses (.phi.H.sub.1), (.phi.H.sub.2) applied to the preceding transfer section, whereby a noise component (36) is superimposed upon the output waveform of ON period (T.sub.R) of the reset gate section.