Method and device for controlling a matrix plasma display screen

A method for controlling a matrix plasma display screen comprising rows and columns, the method comprising:

• sequentially selecting the rows of the matrix plasma display screen;
• emitting, for each selected row, a state change signal input to a step-up circuit to each column of a set of columns using a first transistor of a MOS type for allowing each column of the set of columns to change from a first state to a second state, each state change signal comprising a transitional state from the first state to the second state;
• regulating a rise time of the state change signal by limiting a current flowing through the first transistor during the transitional state;
• and
• controlling a control voltage delivered to a control electrode of the first transistor using a control transistor, the control transistor comprising a first electrode coupled to a power supply terminal, a second electrode for delivering the control voltage to the control electrode of the first transistor, and a control electrode directly coupled to the step-up circuit and receiving a boosted state change signal from the step-up circuit.

A control device for a matrix plasma display screen comprising rows and columns, the control device comprising:

• a row driver circuit configured to sequentially select the rows of the matrix plasma display screen;
• and
• a column driver circuit comprising an individual column driver unit for each column of the matrix plasma display screen, said individual column driver unit comprising
• a first transistor configured to emit, to each column of a set of columns, a state change signal allowing a transition of the set of columns from a first state to a second state, said first transistor configured to emit the state change signal comprising a transitional state from the first state to the second state, and
• a controller comprising a step-up circuit and a control transistor including
• a first electrode configured to be coupled to a power supply terminal,
• a second electrode configured to deliver a control voltage to a control electrode of said first transistor, thereby limiting a current flowing through said first transistor during the transitional state and regulating a rise time of the state change signal, and
• a control electrode configured to be directly coupled to said step-up circuit and to receive a boosted state change signal.

A control device for a matrix plasma display screen, the control device comprising:

• a row driver circuit;
• and
• a column driver unit comprising
• a step-up circuit,
• a first transistor configured to emit a state change signal allowing a transition of a set of columns from a first state to a second state, said first transistor configured to emit the state change signal comprising a transitional state from the first state to the second state, and
• a control transistor including
• a first electrode configured to be coupled to a reference voltage,
• a second electrode configured to be coupled to and deliver a control voltage to a control electrode of said first transistor, and
• a control electrode configured to be directly coupled to the step-up circuit and receive a boosted state change signal.

A display screen apparatus comprising:

• a matrix plasma screen;
• and
• a drive device configured to drive for driving said matrix plasma screen comprising rows and columns, said drive device comprising
• a row driver circuit, and
• a column driver unit comprising
• a step-up circuit,
• a first transistor configured to emit a state change signal allowing a transition of a set of columns from a first state to a second state, said first transistor configured to emit the state change signal comprising a transitional state from the first state to the second state, and
• a control transistor including
• a first electrode configured to be coupled to a reference voltage,
• a second electrode configured to be coupled to and deliver a control voltage to a control electrode of said first transistor, and
• a control electrode configured to be directly coupled to the step-up circuit and receive a boosted state change signal.

A method for controlling a matrix plasma display screen comprising rows and columns, the method comprising:

• sequentially selecting the rows of the matrix plasma display screen;
• emitting, for each selected row, a state change signal input to a step-up circuit to each column of a set of columns using a first transistor of a MOS type for allowing each column of the set of columns to change from a first state to a second state, each state change signal comprising a transitional state from the first state to the second state;
• regulating a rise time of the state change signal by limiting a current flowing through the first transistor during the transitional state;
• and
• controlling a control voltage delivered to a control electrode of the first transistor using a control transistor and a control resistor, the control transistor comprising a first electrode coupled to the control resistor, a second electrode coupled to the control electrode of the first transistor for delivering the control voltage, and a control electrode directly coupled to the step-up circuit and receiving a boosted state change signal from the step-up circuit.

A control device for a matrix plasma display screen, the control device comprising:

• a row driver circuit;
• and
• a column driver unit comprising
• a step-up circuit,
• a first transistor configured to emit a state change signal allowing a transition of a set of columns from a first state to a second state, said first transistor configured to emit the state change signal comprising a transitional state from the first state to the second state,
• a control resistor configured to be coupled to a reference voltage, and
• a control transistor including
• a first electrode configured to be coupled to said control resistor,
• a second electrode configured to be coupled to and deliver a control voltage to a control electrode of said first transistor, and
• a control electrode configured to be directly coupled to said step-up circuit and receive a boosted state change signal.