Method for reading a passive matrix-addressable device and a device for performing the method

Method for reading a passive matrix-addressable device and a device for performing the method

  • CN 1,701,386 A
  • Filed: 10/29/2002
  • Published: 11/23/2005
  • Est. Priority Date: 11/30/2001
  • Status: Active Application
First Claim
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1. , a kind of method that is used to read passive matrix-addressable device, storage component part or sensor component that this passive matrix-addressable device is especially a kind of to have each addressable unit that is used for storing the given logical value of the charge value that is provided with by a unit, wherein this device comprises the electric polarizable material that presents hysteresis, especially ferroelectric material, wherein this device comprises first and second electrodes that are provided with by form the parallel pole of word line and bit line respectively in this device, this word line electrode (WL) and this bit line electrode (BL) wherein are set mutual vertically and locate to contact this polarizable material their apparent surface, so that each unit of this device is included in the intersection point between word line and the bit line or the intersection point between word line and bit line is sentenced the capacitor-type structure that the volume defining of polarizable material goes out, wherein by apply a tender stupid voltage V greater than this polarizable material between the word line (WL) of selected cell and bit line (BL) cVoltage V s, the unit in this device just can be set to one of two kinds of polarized states or switch between these polarized states, wherein each bit line (BL) is connected with pick-up unit, wherein this method comprises:

  • the voltage pulse protocol with read cycle, so that during this read cycle, each pick-up unit detect its correlative position line (BL) and with each unit that this bit line is connected between the electric charge that flows, and wherein the method is characterized in that;

    The mode of adjusting with the time according to voltage pulse protocol is controlled the current potential on all word lines and the bit line, said voltage pulse protocol is included in the clock sequence of the current potential on all word lines and the bit line, therefore at least during the part of read cycle, activate word line by the current potential that applies, the current potential of relative all bit lines that intersect of this current potential that applies is at least corresponding to voltage V s, and by in this pick-up unit, detecting the logical value of storing in each unit that this charge value determines to be connected with the activation word line.

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