Display device and moving-film display device
AssigneeKabushiki Kaisha Toshiba
InventorsAtsushi Sugahara, Goh Itoh, Richard Lang, Haruhiko Okumura
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Abstract
In a moving-film display device, each pixel includes a moving film electrode capable of bending and a counter electrode. The display color of each pixel is determined when the moving film electrode bends by a potential difference between the moving film electrode and the counter electrode. The moving film electrode is connected to a signal line via a TFT. The TFT is turned on/off by an address line. A controller keeps the TFT ON until the potential of the moving film electrode becomes substantially equal to a signal potential, and turns off the TFT before the moving film electrode comes closest to the counter electrode.
Claims28
A moving-film display device comprising:
- a pixel matrix defined by rows and columns of a plurality of pixels, each of said pixels comprising
- first and second electrodes, one of said first and second electrodes being a moving film electrode capable of bending, at least its end portion having a colored portion, the other of said first and second electrodes being a counter electrode which opposes said moving film electrode, and
- a switch connected to said first electrode;
- a plurality of signal lines, each connected to the switches of pixels arranged in a raw in order to supply an image signal, for driving said first electrodes;
- a signal line driver configured to selectively supply the image signal to said signal lines;
- a plurality of counter potential lines, each connected to the second electrodes of pixels arranged in a column in order to give a counter potential to said second electrodes;
- a plurality of address lines, each of address lines supplying a control signal to said switches for selecting said pixels;
- and
- a controller configured to control said signal lines, said counter potential lines, and said switches;
- wherein a display color of each pixel is determined when said moving film electrode bends by a potential difference between said moving film electrode and said counter electrode.
A moving-film display device comprising a pixel matrix defined by rows and columns of a plurality of pixels disposed on an insulating substrate,
- wherein, in each of said pixels, said device comprises:
- a semiconductor switch disposed on said substrate and electrically connected to a signal line;
- an intermediate conductor plate disposed on said substrate via a first insulating layer and electrically connected to said switch;
- an upper conductor plate disposed on said intermediate conductor plate via a second insulating layer, said intermediate conductor plate and said upper conductor plate being electrically coupled with each other;
- and
- a pair of electrodes including first and second electrodes which oppose each other while standing on said second insulating layer, said first electrode being electrically connected to said upper conductor plate, said second electrode being given a counter potential, one of said first and second electrodes being a moving film electrode which has a colored portion in an upper end portion and can bend, the other being a counter electrode which opposes said moving film electrode, and a display color of each pixel being determined when said moving film electrode bends by a potential difference between said moving film electrode and said counter electrode.
A display device comprising:
- a pixel matrix defined by rows and columns of a plurality of pixels, each of said pixels comprising a pair of electrodes including first and second electrodes opposing each other, and a colored portion which determines a display color of said pixel by changing an exposed state thereof in accordance with a potential difference between said pair of electrodes;
- a plurality of signal lines which run along said pixels to give said first electrode a signal potential as an image signal;
- a counter potential line disposed to give a counter potential to said second electrode;
- a capacitor so disposed in each of said pixels as to connect a node between said signal line and said first electrode to a constant-potential portion different from said second electrode, in order to hold the signal potential given from said signal line;
- a bypass formed in each of said pixels and including a resistor connected to said node in parallel with said capacitor in order to release electric charge from said capacitor;
- a signal line driver configured to selectively supply the image signal to said signal lines;
- and
- a controller configured to control said signal line driver, said controller applying a gradation display potential different from one pixel to another as the signal potential in order to perform a gradation display on the basis of an exposure/non-exposure time of said colored portion.
Dependencies are inferred from the claim text.