Patent ID: 8994642
Filing Date: 2015-03-31
Classification: G02B,G09G

Abstract:
1. A display element that comprises a first substrate provided on a display surface side, a second substrate provided on a non-display surface side of the first substrate so that a predetermined display space is formed between the first substrate and the second substrate, an effective display region and a non-effective display region that are defined with respect to the display space, and a polar liquid sealed in the display space so as to be moved toward the effective display region or the non-effective display region, and that is capable of changing a display color on the display surface side by moving the polar liquid, wherein the display element comprises: a plurality of signal electrodes that are placed in the display space so as to come into contact with the polar liquid, and are also provided along a predetermined arrangement direction; a plurality of reference electrodes that are provided on one of the first substrate and the second substrate so as to be electrically insulated from the polar liquid and to be located on one of the effective display region side and the non-effective display region side, and are also arranged so as to intersect with the plurality of the signal electrodes; a plurality of scanning electrodes that are provided on one of the first substrate and the second substrate so as to be electrically insulated from the polar liquid and the plurality of the reference electrodes and to be located on the other of the effective display region side and the non-effective display region side, and are also arranged so as to intersect with the plurality of the signal electrodes; a plurality of pixel regions that are located at each of the intersections of the plurality of the signal electrodes and the plurality of the scanning electrodes; ribs that are provided on at least one of the first substrate and the second substrate so as to partition an inside of the display space in accordance with each of the plurality of the pixel regions; an insulating fluid that is not mixed with the polar liquid and is movably sealed in the display space; and a display control that performs drive control of the plurality of the signal electrodes, the plurality of the reference electrodes, and the plurality of the scanning electrodes so that a scanning operation is performed along a predetermined scanning direction based on an external image input signal, wherein the effective display region and the non-effective display region are set along the scanning direction in each of the plurality of the pixel regions, wherein the display control supplies predetermined reset signals to the signal electrodes, the reference electrodes, and the scanning electrodes so that the polar liquid in each of all the pixel regions is moved to an initial position that is set on the effective display region side or the non-effective display region side opposite the scanning direction before the scanning operation is performed; wherein the display control supplies predetermined pre-signals to the signal electrodes, the reference electrodes, and the scanning electrodes so that the polar liquid in each of the pixel regions to be scanned is held on the initial position side when the scanning operation is performed; a signal voltage application portion that is connected to the plurality of the signal electrodes and the display control, and applies a signal voltage in a predetermined voltage range in accordance with information to be displayed on the display surface side, a voltage of the reset signal, and a voltage of the pre-signal to each of the plurality of the signal electrodes based on an instruction signal from the display control; a reference voltage application portion that is connected to the plurality of the reference electrodes and the display control, and applies one of a selected voltage and a non-selected voltage, a voltage of the reset signal, and a voltage of the pre-signal to each of the plurality of the reference electrodes, the selected voltage allowing the polar liquid to move in the display space in accordance with the signal voltage and the non-selected voltage inhibiting movement of the polar liquid in the display space; and a scanning voltage application portion that is connected to the plurality of the scanning electrodes and the display control, and applies one of a selected voltage and a non-selected voltage, a voltage of the reset signal, and a voltage of the pre-signal to each of the plurality of the scanning electrodes, the selected voltage allowing the polar liquid to move in the display space in accordance with the signal voltage and the non-selected voltage inhibiting movement of the polar liquid in the display space.