Sony Corporation

Yoji Takamura

Kazuya Yonemoto

Hiroki Endo

Naoki Nishi

Manabu Ishibashi

In a color CCD (charge-coupled device) imaging device where chromatic filter components are formed on sensor units functioning as pixels, respectively, and small condenser lenses are provided on the respective chromatic filter components, it is so constructed that areas of the small condenser lenses are varied, depending upon film thickness of the respective chromatic filter components. Then, the sensitivity increasing rates for the respective pixels of the color CCD imaging device are uniformed.

Charge-coupled device having on-chip lens

A solid state imager is comprised of an imager unit composed of a plurality of sensitive units arrayed in the unit of pixels in a two-dimensional manner in the horizontal and vertical directions and vertical transfer units for transferring electric charges read-out from the sensitive units in the vertical direction at every vertical column, and a horizontal transfer unit formed of charge transfer unit group (8.sub.1, 8.sub.2, 8.sub.3, . . . ) of a plurality of bits in which a clock voltage (.phi..sub.H1) is applied to a first charge transfer unit group (8.sub.1, 8.sub.3. . . ) at every other bit including the charge transfer unit (8.sub.1) of a final bit and a clock voltage (.phi..sub.H2) is applied to a second charge transfer unit group (8.sub.2, 8.sub.4, . . . ) at every other bit of the remaining bit to transfer the electric charges supplied from the image unit in the horizontal direction, wherein a cross point between a leading edge of the clock voltage (.phi..sub.H1) and a trailing edge of the clock voltage (.phi..sub.H2) is set to be a level higher than an intermediate level between peak values of the clock voltages. Thus, a so-called electric charge flooding phenomenon from the final bit (final stage) of the horizontal transfer unit to the output circuit unit can be prevented and therefore the dynamic range of the final bit can be increased relatively.

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Kanagawa, Japan

Yoji Takamura