Organic electroluminescence display and method of driving the same

A method of driving an organic electroluminescence display, comprising:

• providing the organic electroluminescence display, wherein the organic electroluminescence display includes:
• a plurality of a first to a nth data lines (DL1˜DLn) and a first to a mth gate lines (GL1˜GLm) arranged on a substrate, data lines and the gate lines being parallel each other;
• a plurality of signal lines arranged on the substrate, the signal lines being perpendicular to the gate lines, the number of the signal lines connected to each of k switching blocks being same as the number of the data lines;
• a plurality of switching elements provided in the pixel regions, respectively, and electrically connected to the signal lines and the gate lines;
• a plurality of switching blocks that open and close an electrical connection between the signal lines and the pixels, each of the plurality of switching blocks including a plurality of first switches, and each of the plurality of switching blocks being connected to all of the data lines such that each of the plurality of first switches being connected to one respective data line, the one respectively data line being connected to one respective first switch through the corresponding signal line;
• and
• a pre-charging unit including a plurality of second switches being directly connected to the signal lines and a first driving unit, wherein the first driving unit supplies a set voltage to the signal lines according to a first control signal, wherein the set voltage is applied to the signal lines before a scanning signal is applied to the gate lines;
• applying by a second driving unit, the scanning signal to the pixels connected to the (m−1)th gate line;
• causing the plurality of switching blocks conductive one by one sequentially according to a second control signal sent from the first driving unit;
• supplying image signals to the pixels connected to the (m−1)th gate line via the signal lines, by applying the image signals to the signal lines through the plurality of conductive switching blocks;
• and
• displaying images at the pixels connected to the (m−1)th gate line (GLm−1) according to the image signals,
• applying by the first driving unit, the set voltage to the pixels electrically connected to the (m−1)th gate line (GLm−1) by turning on the pre-charging unit according to the first control signal from the first driving unit, after blocking the scanning signal applied to the (m−1)th gate line (GLm−1) from the second driving unit;
• maintaining the pixels connected to the (m−1)th gate line as a black state;
• applying the scanning signal to the pixels connected to the mth gate line (GLm) from the second driving unit, after blocking the first control signal;
• causing the plurality of switching blocks conductive one by one sequentially according to the second control signal sent from the first driving unit for driving the plurality of switching blocks;
• supplying the image signals to the pixels connected to the mth gate line (GLm) via the signal lines by applying the image signals to the signal lines through the plurality of conductive switching blocks;
• and
• displaying the images at the pixels connected to the mth gate line (GLm) according to the image signals,
• wherein the plurality of first switches in a first of the plurality of switching blocks are simultaneously turned on, wherein a remaining of the plurality of switching blocks are successively operated,
• wherein the plurality of switching blocks are disposed between the pre-charging unit and the data lines, wherein a total number of the plurality of first switches in the plurality of switching blocks are equal to a total number of the plurality of second switches in the pre-charging unit,
• wherein the first driving unit is directly connected to the first to the nth data lines (DL1˜DLn), and supplies the second control signal to cause the plurality of switching blocks conductive sequentially to output the image signals to the data lines.

An organic electroluminescence display, comprising:

• a plurality of a first to a nth data lines (DL1˜DLn) and a plurality of a first to a mth gate lines (GL1˜GLm) arranged on a substrate;
• a plurality of signal lines arranged on the substrate;
• a plurality of pixel regions defined by the plurality of gate lines and the plurality of signal lines;
• a plurality of switching blocks disposed in the plurality of signal lines to open and close an electrical connection between the plurality of signal lines and the plurality of pixels, each of the plurality of switching blocks includes at least n first switches, each of the switching blocks being connected to all of the plurality of data lines such that each of the at least n first switches being connected to a respective data line;
• a first driving unit outputs a pre-charging signal to a pre-charging unit for each horizontal period before a second driving unit outputting scanning signals, which wherein the first driving unit outputs image signals to the plurality of data lines and outputs a block driving signal which causes the plurality of switching blocks conductive one by one sequentially to output the image signals to the plurality of data lines;
• and
• wherein the pre-charging unit is directly connected to the plurality of signal lines and the first driving unit, and wherein the first driving unit supplies a set voltage to the plurality of signal lines according to the pre-charging signal before the scanning signals are applied to the plurality of gate lines, and the plurality of switching blocks are connected to the pre-charging unit and to all of the plurality of data lines;
• wherein the set voltage supplied to the plurality of signal lines causes all the at least first n switches in the plurality of switching blocks conductive at a same time according to the block driving signal, wherein the block driving signal to the plurality of switching blocks are synchronized with a time between a turned-off one gate line and a turned-on next gate line in order to maintain the pixels connected to the one gate line in a black state;
• the second driving unit for outputting scanning signal to the mth gate line (GLm) after the first driving unit outputs the pre-charge signals,
• wherein the plurality of data lines and the plurality of gate lines are parallel to each other, the plurality of signal lines are perpendicular to the plurality of gate lines, the number of the plurality of signal lines connected to each of k switching blocks being same as the number of the plurality of data lines, such that the (k×n) signal lines disposed on the substrate and (k×n×m) pixel regions are defined by the plurality of signal lines and the plurality of gate lines, and each of the plurality of switching block including the at least n first switches connected to the first to the nth data lines (DL1˜DLn) respectively,
• wherein one data line being connected to a respective first switch of one switching block through the corresponding signal line,
• wherein the at least first n switches in a first of the plurality of switching blocks are simultaneously turned on, wherein a remaining of the plurality of switching blocks are successively operated,
• wherein the plurality of switching blocks are disposed outside of the first driving unit such that the image signal is applied to the at least first n switches,
• wherein the first driving unit is directly connected to the first to the nth data lines (DL1˜DLn) and supplies the block driving signal to the plurality of switching blocks.

A method of driving an organic electroluminescence display, comprising:

• providing the organic electroluminescence display, wherein the organic electroluminescence display includes:
• a plurality of a first to a nth data lines (DL1˜DLn) and a first to a mth gate lines (GL1˜GLm) arranged on a substrate, data lines and the gate lines being parallel each other;
• a plurality of signal lines arranged on the substrate, the signal lines being perpendicular to the gate lines, the number of the signal lines connected to each of k switching block being same as the number of the data lines;
• a plurality of pixel regions defined by the gate lines and the signal lines;
• switching elements provided in the pixel regions, respectively, and electrically connected to the signal lines and the gate lines;
• and
• a plurality of switching blocks that open and close an electrical connection between the signal lines and the pixels, each of the plurality of switching blocks including at least n first switches, and each of the plurality of switching blocks being connected to all of the data lines such that each of the at least n first switches being connected to one respective data line, the one respectively data line being connected to one respective first n switches through the corresponding signal line;
• a pre-charging unit including a plurality of second switches being directly connected to the signal lines and a first driving unit, wherein the first driving unit supplies a set voltage to the signal lines according to a first control signal, wherein the set voltage is applied to the signal lines before a scanning signal is applied to the gate lines;
• applying by a second driving unit, the scanning signal to the pixels which are electrically connected to a (m−1)th gate line;
• causing the plurality of switching blocks conductive sequentially according to a second control signal sent by the first driving unit for driving the plurality of switching blocks;
• supplying image signals to the pixels connected to the (m−1)th gate line via the signal lines, by applying the image signals to the signal lines through the conductive plurality of switching blocks;
• and
• displaying images at the pixels connected to the (m−1)th gate line (GLm−1) according to the image signals;
• applying by the first driving unit, the set voltage to the pixels electrically connected to the (m−1)th gate line (GLm−1) by turning on the pre-charging unit according to the first control signal from the first driving unit, which in turn turning on the plurality of switching blocks at one time, after blocking the scanning signal applied to the (m−1)th gate line (GLm−1) from the second driving unit;
• maintaining the pixels connected to the (m−1)th gate line as a black state;
• applying the scanning signal to the pixels connected to the mth gate line (GLm) from the second driving unit, after blocking the first control signal;
• causing the plurality of switching blocks conductive one by one sequentially according to the second control signal sent from the first driving unit for driving the plurality of switching blocks;
• supplying the image signals to the pixels connected to the mth gate line (GLm) via the signal lines by applying the image signals to the signal lines through the plurality of conductive switching blocks;
• and
• displaying the images at the pixels connected to the mth gate line (GLm) according to the image signals,
• wherein each data line is connected to a plurality of signal lines,
• wherein the plurality of first switches in a first of the plurality of switching blocks are simultaneously turned on, wherein a remaining of the plurality of switching blocks are successively operated,
• wherein the plurality of switching blocks are disposed at the outside of the first driving unit such that the image signal is applied to the first n switches,
• wherein the first driving unit is directly connected to the first to the nth data lines (DL1˜DLn), and supplies the second control signal to cause the plurality of switching blocks conductive sequentially to output the image signals to the data lines.