Abstract: In a liquid crystal color display panel comprising a color filter layer superposed on one surface of a liquid crystal shutter device for transmitting or intercepting light by the application of a voltage across electrode groups. This color filter layer is formed of photosensitive emulsion layers which are sensitive to specific color light respectively and provided on a transparent plate. While illuminating the liquid crystal shutter device from the other surface thereof by specific color light sequentially. The voltage is applied across selected opposed electrode groups to form latent images in alignment with the positions of the electrode groups. Then, the latent images are developed to produce colors. In this manner, filter layers are made in alignment with the shutter device.

Abstract: In driving system for a matrix display device which comprises display elements arranged in matrix form, row electrodes and column electrodes for driving the display elements arranged in matrix form, row electrodes and column electrodes for driving the display elements, and driving means for applying driving signals corresponding to display information into the row electrodes and column electrodes, display elements in even row and display elements in odd row are respectively driven by independent row electrode group and column electrode group thereby display of high density can be performed without using a memory circuit and without reducing the display quality.

Abstract: A method of manufacturing insulated gate thin film field effect transistors is disclosed in which first and second closely adjacent anodic oxidation electrodes are formed on an electrically insulating substrate, and a semiconducting layer is formed on the insulating substrate and the first and second anodic oxidation electrodes. An anodic oxidation of the semiconducting layer is performed, utilizing the first and second anodic oxidation electrodes, to form an oxide layer on the semiconducting layer. The oxide layer is then patterned to form a gate insulator and the semiconducting layer is patterned to expose a portion of each of the first and second anodic oxidation electrodes. The exposed portions of the first and second anodic oxidation electrodes are patterned to form source and drain electrodes, respectively.

Abstract: In a multi-layer display device such as a liquid crystal display, each of a plurality of sets of display elements is defined by a corresponding common electrode and a plurality of segment electrodes. Segment electrodes of sets of display elements which will not be activated simultaneously are connected together, with at least one of these sets being maintained in a deactivated state by means of a special drive signal applied to the corresponding common electrode. The level of time-sharing which must be utilized for driving the various common electrodes, for a given number of external connections to the segment electrodes, can thereby be reduced, or the overall number of connections made to the display device can be substantially reduced.

Abstract: A display device of solid-state matrix type, such as a liquid crystal display device, retains display data for an unlimited period after such data has been written into the display, with no need for periodic re-writing of the display data to compensate for deterioration due to leakage effects. In addition, the display data can be read out again, if required, so that the display device can also be used as a memory. such a display device can also be utilized to perform data input, by writing in of data through application of light to the display surface, such as by using a light pen.

Abstract: In a matrix type of liquid crystal display panel, in which an individual switching element is provided on the panel for each of the display elements, the electrodes of each display element comprise a first comb-shaped electrode pattern, to which a display signal voltage is applied through a switching element, and a second comb-shaped electrode pattern which is held at a reference potential, with the first and second comb-shaped patterns being mutually intermeshed and formed upon a single substrate of the panel, whereby application of a display signal voltage causes an electric field to be produced in a direction substantially parallel to the substrate plane to thereby act upon the liquid crystal, rather than in a direction normal to the substrate plane as in the case of a conventional type of liquid crystal display panel.

Abstract: A novel type of liquid crystal display device is disclosed, whereby data can be written in, via the display device, by utilizing light-generating means such as a light pen. The display device is of matrix configuration, with a switching element being provided individually for each of the elements of the display matrix, and is characterized by a photoelectric element being provided for each display element, whereby data is written in. The discrimination circuit means whereby the statuses of the photoelectric elements are sensed, in a time sharing manner, can utilize the same row and column electrodes used to drive the switching elements of the display matrix, and the photoelectric elements can be formed during the same process, and upon the same substrate, as the switching elements.

Abstract: A guest-host liquid crystal display device which employs a pleochroic liquid crystal mixture having helical molecular ordering. To prevent the occurrence of a light-scattering turbid texture the helical molecular ordering is converted into a miss-matching state of an increased strain energy by a proper combination of surface alignment treatments applied to the facing surfaces of a pair of transparent plates that sandwich the liquid crystal layer.

Abstract: A liquid crystal display cell of reflective dichroic type, having improved contrast over a wide range of viewing angles by comparison with previous cells of this type, due to the overall distance between the reflecting surface and the liquid crystal layer being reduced by incorporation of a reflection layer and light diffusion surface which are integral with a rear substrate of the cell, in which the rear substrate is composed of phase retarding means.