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    CONNECTED FIELD EFFECT TRANSISTORS
    33.
    发明申请
    CONNECTED FIELD EFFECT TRANSISTORS 审中-公开

    公开(公告)号：WO2020068035A1

    公开(公告)日：2020-04-02

    申请号：PCT/US2018/052443

    申请日：2018-09-24

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： MARTIN, Eric ,  CICILI, Rogelio ,  YAMASHITA, Tsuyoshi

    IPC: H01L27/105 ,  B41J2/175

    Abstract: Examples include a fluidic die. The fluidic die comprises an array of field effect transistors including field effect transistors of a first size and field effect transistors of a second size. At least one connecting member interconnects at least some of the field effect transistors of the array of field effect transistors. The fluidic die further comprises a first fluid actuator connected to a first set of field effect transistors having at least one field effect transistor of the first size. The die includes a second fluid actuator connected to a second respective set of field effect transistors having a first respective field effect transistor of the second size interconnected to at least one other field effect transistor of the array.

    THERMAL ZONE SELECTION WITH A CIRCULAR SHIFT REGISTER
    35.
    发明申请
    THERMAL ZONE SELECTION WITH A CIRCULAR SHIFT REGISTER 审中-公开

    公开(公告)号：WO2019240760A1

    公开(公告)日：2019-12-19

    申请号：PCT/US2018/036926

    申请日：2018-06-11

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： ANDERSON, Daryl E. ,  MARTIN, Eric ,  GARDNER, James Michael

    IPC: B41J2/05 ,  B41J2/14

    Abstract: Examples of a fluidic die for thermal zone selection with a circular shift register are described herein. In some examples, the fluidic die includes multiple thermal zones. Each thermal zone includes a temperature sensor and a fluidic actuator. The fluidic die also includes shared thermal control circuitry to process an output of the temperature sensor of a selected thermal zone. The fluidic die further includes a circular shift register that includes multiple memory elements. Each memory element is associated with one thermal zone. A token circulates within the circular shift register to select one thermal zone at a time for processing by the shared thermal control circuitry.

    ZONAL FIRING SIGNAL ADJUSTMENTS
    36.
    发明申请
    ZONAL FIRING SIGNAL ADJUSTMENTS 审中-公开

    公开(公告)号：WO2019240746A1

    公开(公告)日：2019-12-19

    申请号：PCT/US2018/036828

    申请日：2018-06-11

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： MARTIN, Eric ,  ANDERSON, Daryl E. ,  GARDNER, James Michael

    IPC: B41J2/175 ,  B41J2/14

    Abstract: In one example in accordance with the present disclosure, a fluidic die is described. The fluidic die includes a number of zones. Each zone includes a number of sets of fluidic devices. Each fluidic device includes a fluid chamber and a fluid actuator disposed in the chamber. Each fluidic device also includes a sensor to sense a characteristic of the zone and an adjustment device. The adjustment device 1) delays a firing signal received from a previous zone as it passes by each set of fluidic devices and 2) adjusts the firing signal as it enters the zone based on a sensed characteristic.

    FLUIDIC DIE WITH MONITORING CIRCUIT USING FLOATING POWER NODE
    37.
    发明申请
    FLUIDIC DIE WITH MONITORING CIRCUIT USING FLOATING POWER NODE 审中-公开

    公开(公告)号：WO2019221712A1

    公开(公告)日：2019-11-21

    申请号：PCT/US2018/032798

    申请日：2018-05-15

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： MARTIN, Eric ,  CICILI, Rogelio

    IPC: B41J2/14

    Abstract: A fluidic die includes a high-side switch to selectively couple a power node to a power source, a pulldown switch to selectively couple the power node to a first reference voltage, a group of fluid actuators, each fluid actuator connected to the power node and each having a corresponding low-side switch to selectively couple the fluid actuator to a second reference voltage, and a group of fluid chambers, each including an electrode exposed to an interior of the fluid chamber, and each corresponding to a different one of the fluid actuators. Monitoring circuitry, during a monitoring operation, with the high-side switch and each low-side switch open, to connect to the electrode of a selected one of the fluid chambers, and to open the pulldown switch so that the fluid actuators are floating.

    FLUIDIC DIE WITH MONITORING CIRCUIT FAULT PROTECTION STRUCTURE
    38.
    发明申请
    FLUIDIC DIE WITH MONITORING CIRCUIT FAULT PROTECTION STRUCTURE 审中-公开

    公开(公告)号：WO2019221706A1

    公开(公告)日：2019-11-21

    申请号：PCT/US2018/032763

    申请日：2018-05-15

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： MARTIN, Eric ,  MCMAHON, Terry ,  SCHULTE, Donald W.

    IPC: B41J2/175 ,  H01L23/62

    Abstract: A fluidic die includes fluid chambers, each including an electrode exposed to an interior of the fluid chamber and each having a corresponding fluid actuator operating at a high voltage. The fluidic die further includes monitoring circuitry, operating at a low voltage relative to the fluid actuator, to monitor a condition of each fluid chamber, for each chamber the monitoring circuitry including a connection structure and a select transistor and a pulldown transistor connected to the electrode via the connection structure. The connection structure and select and pulldown transistors together structured to form electrically conductive paths with electrical resistances to protect at least the select transistor from fault damage if the high voltage fluid actuator short-circuits to the electrode.

    NON-NUCLEATION FLUID ACTUATOR MEASUREMENTS
    39.
    发明申请
    NON-NUCLEATION FLUID ACTUATOR MEASUREMENTS 审中-公开

    公开(公告)号：WO2019177568A1

    公开(公告)日：2019-09-19

    申请号：PCT/US2018/021990

    申请日：2018-03-12

    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

    Inventor： MARTIN, Eric ,  YAMASHITA, Tsuyoshi ,  PRZYBYLA, James R.

    IPC: B41F33/00 ,  B41J2/04

    Abstract: In one example in accordance with the present disclosure, a fluidic die is described. The fluidic die includes an array of fluid actuators grouped into primitives. Each actuator is disposed in a fluid chamber. The fluidic die also includes an array of fluid sensors. Each fluid sensor is disposed within a fluid chamber and determines a characteristic within the fluid chamber. A data parser of the fluidic die extracts from an incoming signal, firing instructions and measurement instructions for the fluidic die. The measurement instructions indicate at least one of a peak measurement during a nucleation event and a reference measurement during a non-nucleation event. A firing controller generates firing signals based on the firing instructions and a measurement controller activates, during a measurement interval of a printing cycle for the primitive, a measurement for a selected actuator based on the measurement instructions.

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