Method of driving active matrix displays having nonlinear elements in pixel elements
OwnerNongqiang Faninventor
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Abstract
A method is applied on an active matrix display. A pixel element includes a capacitive element, a nonlinear element, and a resistive element. The method includes the following steps: (1) selecting multiple pixel elements as selected pixel elements; and (2) charging the selected pixel elements. The step of selecting a pixel element includes applying a voltage to a first terminal of the resistive element in the pixel element to drive the nonlinear element into a conducting state. The step of charging a given selected pixel element includes generating a predetermined current that passes through both the nonlinear element in the given selected pixel element and the resistive element in the given selected pixel element.
Claims48
A method applied on an active matrix display having a matrix of pixel elements, an array of column conducting lines, and an array of row conducting lines crossing the array of column conducting lines, wherein a pixel element comprises a nonlinear element having a first terminal electrically connected to a column conducting line, a resistive element having a first terminal electrically connected to a row conducting line, and a capacitive element having a first terminal electrically connected to the column conducting line through the nonlinear element, wherein the nonlinear element is configured to function as a two-terminal switching element having the conductivity thereof controllable with a voltage across thereof or a current passing through, the method comprising:
- forming a row of selected pixel elements in the matrix of pixel elements, wherein the forming a row of selected pixel elements comprises driving the nonlinear element in each selected pixel element into a conducting state;
- forming non-selected pixel elements in multiple rows of pixel elements, wherein forming a given non-selected pixel element comprises driving the nonlinear element in the given non-selected pixel element into a non-conducting state;
- and
- charging multiple selected pixel elements in the row of selected pixel elements, wherein charging a given selected pixel element comprises passing a current through the resistive element in the given selected pixel element with a current value individually predetermined for the given selected pixel element to generate a voltage value across the resistive element that is substantially independent upon the current-voltage characteristics of the nonlinear element and to charge the capacitive element in the given selected pixel element to a target voltage that is substantially independent upon the current-voltage characteristics of the nonlinear element but having the target voltage substantially depend upon the resistive value of the resistive element.
A method applied on an active matrix display having a matrix of pixel elements, wherein a pixel element comprises a capacitive element, a nonlinear element, and a resistive element, the method comprising:
- selecting multiple pixel elements as selected pixel elements, wherein selecting a pixel element comprises applying a voltage to a first terminal of the resistive element in the pixel element to drive the nonlinear element into a conducting state;
- and
- charging the selected pixel elements, wherein charging a given selected pixel element comprises passing a current through the resistive element in the given selected pixel element with a current value individually predetermined for the given selected pixel element to generate a voltage value across the resistive element that is substantially independent upon the current-voltage characteristics of the nonlinear element and to charge the capacitive element in the given selected pixel element to a target voltage that is substantially independent upon the current-voltage characteristics of the nonlinear element but having the target voltage substantially depend upon the resistive value of the resistive element.
A method of driving a column of pixel elements in an active matrix display having a matrix of pixel elements, wherein a pixel element comprises a capacitive element having a first terminal, a nonlinear element electrically connected to the first terminal of the capacitive element, and a resistive element electrically connected to the first terminal of the capacitive element, the method comprising:
- selecting a pixel in the column of pixel elements as a selected pixel element, wherein the selecting comprises applying a predetermined voltage to drive the nonlinear element in the selected pixel element into a conducting state by changing the conductivity thereof with a voltage across thereof or a current passing through;
- and
- charging the selected pixel element, wherein the charging comprises passing a current through the resistive element in the selected pixel element with a predetermined current value individually predetermined for the selected pixel element to generate a voltage value across the resistive element that is substantially independent upon the current-voltage characteristics of the nonlinear element and to charge the capacitive element in the selected pixel element to a target voltage that is substantially independent upon the current-voltage characteristics of the nonlinear element but having the target voltage substantially depend upon the resistive value of the resistive element.
Dependencies are inferred from the claim text.