摘要:
An electrochromic display device comprises a plurality of display segmented electrodes and first additional electrodes, a layer of an electrochromic material in contact with each of the display segmented electrodes and the first additional electrodes, a first connecting circuit for selectively connecting each of the display segmented electrodes into one of two groups, depending on a display pattern to be indicated, a counting circuit for counting the electrodes and determining the difference in display area between the two groups of display segmented electrodes, a circuit responsive to the difference in display area for connecting each of the first additional electrodes into one of the two groups of the display segmented electrodes, a power supply for supplying power to each of the two groups of the first additional electrodes and the display segmented electrodes, and a second additional electrode for keeping the total amount of charge for coloring all the display electrodes constant.
摘要:
An electrochromic display device is characterized by comprising a counter electrode, opposed to a plurality of display segmented electrodes, for absorbing a charge present in some colored display segments. Thereafter, the counter electrode provides a refreshing charge to said some segments from which charge has been taken off. A total amount of charge, defined as the amount of charge necessary for coloring all the display electrodes, is kept constant by refreshing.
摘要:
An electrochromic display device in which the redox layer of the counter-electrode is formed by burning a mixture of a self-film-forming compound such as manganese nitrate and a carbon type electroconductive material such as non-woven fabric of carbon fibers without use of any binder.
摘要:
A method of driving an electrochromic display device and the electrochromic display device therefor the latter including an electrochromic display cell having two opposed substrates at least one of which is transparent, a plurality of electrodes respectively applied to the opposed substrates and an electrochromic substance held in contact with said plurality of electrodes between said opposed substrates so as to reversibly vary its light absorbing characteristics by an electric current applied to the electrodes, and a driving circuit coupled to the electrochromic display cell for driving the latter, wherein erasing the display of the electrochromic cell is done in such a manner that the erasing current will be stopped eventually by the electrochromic substance itself in order to secure complete erasure.
摘要:
A driving system is provided for an electrochromic display device in which the coloration state is maintained for several hours through several days of the removal of the coloration voltage as long as the electrochromic display device is held in an electrically opened state. The electrochromic display device includes a predetermined number of display segments, each of the combinations of the display segments defining a different one of the desired display patterns. The display segments placed in the coloration state are electrically connected to each other during the memory period in order to uniform the coloration degree of each of the selected display segments. In a preferred form, a detection means is provided for detecting the potential of the selected display segments, which are held in the memory coloration state. The write-in, or, coloration operation is again conducted when the potential of the selected display segments becomes higher than a preselected level.
摘要:
A driving system is provided for an electrochromic display device in which the coloration state is maintained for several hours through several days of the removal of the coloration voltage as long as the electrochromic display device is held in an electrically opened state. The coloration voltage is applied to a display electrode for a predetermined period of time in order to color the display electrode. When the display electrode is desired to be bleached, the bleaching voltage is continuously applied to the display electrode. That is, the application of the bleaching voltage is maintained for a period of time during which the display electrode is placed in the bleached state. The non-selected display electrodes (those not selected for coloration) are also continuously bleached until these non-selected display electrodes are selected for coloration.
摘要:
A method for preparing an electrochromic display device comprising first and second electrochromic layers and a solid electrolyte interposed therebetween, comprises the steps of forming a conductive film on a substrate, forming an insulating film, over the entire surface of the conductive film forming a resist at portions on the insulating film other than a display pattern and lead-in electrodes, removing the insulating film at the display pattern and the lead-in electrodes, forming the electrochromic material layers and the solid electrolyte over the entire portions other than the lead-in electrode, removing the resist and the electrochromic layers and the solid electrolyte as formed on the insulating film, and forming a second electrode on the second electrochromic layer.
摘要:
A driving technique is provided for an electro-optical display which includes an electrochromic material and a predetermined number of display electrodes, different combinations of the display electrodes defining different desired display patterns. The electrochromic phenomenon is developed within the electro-optical display upon a flow of current supplied through the display electrodes. In transition of a visual display from a specific display pattern to another, voltages are applied to only the one or more display electrodes which are not common to the two display patterns, while no voltages are applied to the one or more display electrodes common to the two display patterns. Applications of a coloration voltage to particular one or more display electrodes and a bleaching voltage to different one or more display electrodes in transition of a visual display are initiated at a same time to reduce the time period required to transcend from one visual display to another.
摘要:
An electrochromic display comprising a display electrode and a counter electrode which form a cavity therebetween like a sandwich, the former consisting of a transparent conductive coating and a layer of transition metal oxide which varies reversibly in the light absorption spectrum upon application of current and the latter consisting of a conductive coating and a reversible charge exchange system. An electrolyte is injected into the cavity. A porous ceramics plate is positioned in contact with the display electrode and the counter electrode. This application is a continuation of copending application Ser. No. 760,521, filed on Jan. 19, 1977, now abandoned.
摘要:
An electrochromic display disclosed herein is compatible with diversification of information to be displayed. A background plate bears a stationary display pattern printed thereon. An electrochromic phenomenon takes place between a pair of electrodes in association with the stationary display pattern.