Thermal fluid-ejection device die

Thermal fluid-ejection device die

  • CN 102,202,897 B
  • Filed: 10/31/2008
  • Issued: 05/18/2016
  • Est. Priority Date: 10/31/2008
  • Status: Active Grant
First Claim
Patent Images

1. a tube core that drips as required fluid ejection apparatus for heat, described tube core comprises:

  • Substrate;

    The multiple thermal excitation resistors that form on described substrate, described thermal excitation resistor is organized into multiple resistor groups,So that each thermal excitation resistor is positioned at an only resistor group, described resistor group is quantitatively less than thermal excitation resistanceDevice, each thermal excitation resistor has first end and the second end;

    That in described substrate, form and quantitatively equal multiple low side switch of thermal excitation resistor, each low side switch willDescribed second end of corresponding thermal excitation resistor is connected to low-voltage;

    AndThat on described substrate, form and quantitatively equal multiple high-side switch of resistor group, each high-side switch is by correspondenceThe described first end of the thermal excitation resistor of resistor group is connected to power supply, and described power supply provides the electricity that is greater than described low-voltagePress;

    Wherein in order to make electric current by given thermal excitation resistor, closed corresponding to described given thermal excitation resistorLow side switch, and the high-side switch of the closed resistor group being positioned at corresponding to described given thermal excitation resistor, wherein,Described fluid ejection apparatus is configured to;

    (a) the closed low side switch corresponding to given thermal excitation resistor;

    (b) the closed high side of given resistor group of thermal excitation resistor corresponding to comprising described given thermal excitation resistorSwitch,Wherein, (a) He (b) carry out with the order that comprises one of following order;

    (b) carry out before at (a), and (a) and (b)At least substantially side by side carry out;

    And(c) in closure after low side switch and high-side switch, open described low side switch and described high side is opened with following orderClose;

    before opening low side switch, open high-side switch, wherein, just carry out on the network of low side switch once open high-side switchWeak pull-down.

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