Complementary metal-oxide-semiconductor transistor and one-capacitor dynamic-random-access memory cell
First Claim
1. A memory cell structure for a dynamic semiconductor memory array of the type including pairs of wordlines having a first wordline for transmitting a first wordline signal manifesting first and second signal levels and a second wordline for transmitting a second wordline signal manifesting two signal levels complementary to said first and second signal levels of said first wordline signal, said memory array further including bit lines,said memory cell structure being connected between a bit line and a pair of wordlines of said memory array and comprising an NMOS type transistor device including first, second and gate electrodes,a PMOS type transistor device including first, second and gate electrodes, anda storage capacitor wherein said first electrode of said NMOS type transistor device is connected to said first electrode of said PMOS type transistor device and to a bit line of said memory array, and said second electrode of said NMOS type transistor device is connected to said second electrode of said PMOS type transistor device and to said storage capacitor,said gate electrode of said NMOS type transistor device is connected to said first wordline of said pair and said gate electrode of said PMOS type transistor device is connected to said second wordline of said pair, said NMOS and PMOS type transistor devices both being turned off in response to a first signal level on said first wordline and said complementary signal level thereof on said second wordline, and said NMOS and PMOS type transistor devices being both turned on in response to a second signal level on said first wordline and said complementary signal level thereof on said second wordline, andwherein said bit line is electrically connected to said storage capacitor and charge is stored into and read out from said storage capacitor in response to said NMOS and PMOS type transistor devices being turned on and off by said signals on said wordlines.
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Accused Products
Abstract
A complementary MOS one-capacitor dynamic RAM cell which operates with a non-boosted wordline without a threshold loss problem and which includes one storage capacitor and n- and p-type transfer devices connected to the storage capacitor which function as two complementary transistor devices having gates controlled by complementary signals on the RAM wordlines.
60 Citations
6 Claims
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1. A memory cell structure for a dynamic semiconductor memory array of the type including pairs of wordlines having a first wordline for transmitting a first wordline signal manifesting first and second signal levels and a second wordline for transmitting a second wordline signal manifesting two signal levels complementary to said first and second signal levels of said first wordline signal, said memory array further including bit lines,
said memory cell structure being connected between a bit line and a pair of wordlines of said memory array and comprising an NMOS type transistor device including first, second and gate electrodes, a PMOS type transistor device including first, second and gate electrodes, and a storage capacitor wherein said first electrode of said NMOS type transistor device is connected to said first electrode of said PMOS type transistor device and to a bit line of said memory array, and said second electrode of said NMOS type transistor device is connected to said second electrode of said PMOS type transistor device and to said storage capacitor, said gate electrode of said NMOS type transistor device is connected to said first wordline of said pair and said gate electrode of said PMOS type transistor device is connected to said second wordline of said pair, said NMOS and PMOS type transistor devices both being turned off in response to a first signal level on said first wordline and said complementary signal level thereof on said second wordline, and said NMOS and PMOS type transistor devices being both turned on in response to a second signal level on said first wordline and said complementary signal level thereof on said second wordline, and wherein said bit line is electrically connected to said storage capacitor and charge is stored into and read out from said storage capacitor in response to said NMOS and PMOS type transistor devices being turned on and off by said signals on said wordlines.
Specification