System for driving a liquid crystal display with power saving features

A method for driving a liquid crystal display, said display comprising an array of elongated row electrodes and an array of elongated column electrodes arranged transverse to the row electrodes, wherein the row electrodes and the column electrodes form opposing plates of a two dimensional array of capacitors, and wherein overlapping areas of the two arrays of electrodes define pixels of the display when viewed in a viewing direction, said method comprising:

• applying electrical potentials to the two arrays of electrodes, wherein said applying applies scanning and non-scanning potentials to the row electrodes and data potentials to the column electrodes for display of images at the pixels, thereby applying said potentials to the opposing plates of the capacitors in the array of capacitors, and wherein at least one of the electrodes in one of the two arrays undergoes a voltage transition between a first and a second electrical potential, the first electrical potential being higher than the second electrical potential;
• wherein said applying includes:
• (a) connecting the at least one electrode sequentially to at least a first capacitor, the first capacitor being at an electrical potential between the two potentials;
• and
• (b) connecting the at least one electrode to at least one driver after connection to the at least first capacitor.

A method for driving a liquid crystal display, said display comprising an array of elongated row electrodes and an array of elongated column electrodes arranged transverse to the row electrodes, wherein overlapping areas of the two arrays of electrodes define pixels of the display when viewed in a viewing direction, said method comprising:

• supplying electrical potentials to the two arrays of electrodes to cause the display to display desired images, wherein said supplying includes:
• applying electrical potentials to the array of column electrodes so that at least one of the column electrodes undergoes voltage transitions;
• connecting the at least one column electrode to a node to reduce power consumption;
• and
• applying scanning and non-scanning electrical potentials to the row electrodes, the non-scanning potential being applied by means of a voltage at the node.

A system for driving a liquid crystal display, said display comprising an array of elongated row electrodes and an array of elongated column electrodes arranged transverse to the row electrodes, wherein the row electrodes and the column electrodes form opposing plates of a two dimensional array of capacitors, and wherein overlapping areas of the two arrays of electrodes define pixels of the display when viewed in a viewing direction, said system comprising:

• a circuit applying electrical potentials to the two arrays of electrodes, wherein said applying applies scanning and non-scanning potentials to the row electrodes and data potentials to the column electrodes for display of images at the pixels, thereby applying said potentials to the opposing plates of the capacitors in the array of capacitors, and wherein at least one of the electrodes in one of the two arrays undergoes a voltage transition between a first and a second electrical potential, the first electrical potential being higher than the second electrical potential;
• wherein said circuit includes:
• (a) a switch connecting the at least one electrode sequentially to at least a first capacitor, the first capacitor being at an electrical potential between the two potentials;
• and
• (b) a switch connecting the at least one electrode to at least one driver after connection to the at least first capacitor.

A system for driving a liquid crystal display, said display comprising an array of elongated row electrodes and an array of elongated column electrodes arranged transverse to the row electrodes, wherein overlapping areas of the two arrays of electrodes define pixels of the display when viewed in a viewing direction, said system comprising:

• a circuit supplying electrical potentials to the two arrays of electrodes to cause the display to display desired images, wherein said circuit applies electrical potentials to the array of column electrodes so that at least one of the column electrodes undergoes voltage transitions;
• a voltage source connected to a node;
• and
• a switch connecting the at least one column electrode to the node to reduce power consumption;
• wherein the circuit applies scanning and non-scanning electrical potentials to the row electrodes, and wherein the non-scanning potential is applied by means of the voltage at the node.