Abstract: With a double-sided display module having a main panel and a sub-panel sharing drive signals, the image quality of the main panel is improved. When the display devices uses the same driver IC to drive the main panel and the sub-panel, the contrast is uneven at the border area between a region of the main panel where signal electrodes share drive signals with the sub-panel and a region of the main panel where signals electrodes do not share drive signals. In order to make the contrast unevenness practically invisible to the naked eye, an unshared electrode adjacent to the border between different contrast levels on the main panel is connected to the dummy electrode. The dummy electrode has to be smaller than the total overlap area of one electrode that constitutes a pixel of the sub-panel. In the case where the sub-panel has more than one dummy electrode, the dummy electrodes are gradually made smaller.

Abstract: A fingerprint reading system is provided, which is capable of enhancing versatility when actually used, increasing productivity and reducing costs. An illumination device emits the light from a rear surface side of an active matrix liquid crystal cell. A light guiding plate provided on a surface side of the active matrix liquid crystal cell, transmits the light coming from the rear surface side and deflects the light coming from the surface side toward one side end surface. A light receiving device provided on the side of one side surface of the light guiding plate receives the light exiting from this one side surface. A drive circuit makes the active matrix liquid crystal cell pinpoint-irradiate a fingerprint in contact with the light guiding plate by pinpointing with the light emitted from the illumination device and makes the light receiving device pinpoint-receive the light reflected by the fingerpoint, thereby obtaining an image of the fingerprint.

Abstract: A display device of the present invention switches between two displays, a main panel display and a sub-panel display, by using one driver IC. Liquid crystals having different optimal driver voltages are used in the main panel and the sub-panel, and the optimal driver voltage for the panel in which display is to be performed is output. A driver voltage that is higher or lower than the optimal driver voltage is applied to the display panel where display is not to be performed, and the entire display thereof displays a single color. Display content of the panel on which display is not to be performed cannot be identified.

Abstract: To provide a display device in which a main panel and a sub-panel with different numbers of pixels are driven with one chip, and with which a wiring method enabling display of display contents in balance on a display screen having the smaller number of pixels. Accordingly, in the display device of the present invention, main panel electrodes are thinned out and connected to sub-panel electrodes. In other words, driver signals output from a driver IC are input to a color main panel. In addition, the driver signals are extracted therefrom, thinned out according to a ratio of the number of pixels of the sub-panel to the number of pixels of the main panel, and input to the sub-panel. Furthermore, only blue signals of the main panel are input to the sub-panel when the sub-panel is monochrome.

Abstract: A driver IC is mounted on a first FPC, and connected to a main panel. A connection terminal that is provided to the first FPC is connected to a second FPC, and in addition, the second FPC is connected to a sub-panel. Output signals from the driver IC are shared between and connected to the main panel and the sub-panel. According to this configuration, the main panel and the sub-panel can share the driver IC without making the outer shape of the main panel larger. An inexpensive dual display device can thus be achieved.

Abstract: By reducing the number of inspection lands, a substrate is downsized, so that it is possible to downsize an electronic device as securing the connection reliability. Therefore, the electronic device according to the present invention is configured in such a manner that a plurality of inspection circuits is arranged to inspect the connection condition of an IC and the substrate, and respective inspection circuits are connected by the wire on the IC or the substrate. As a result, the electronic device according to the present invention allows the conditions of a plurality of inspection circuits to be inspected all at once by means of inspection lands at two positions.

Abstract: An electronic circuit device has an insulating substrate and an integrated circuit having a surface disposed opposite to and confronting a surface of the insulating substrate to form a gap therebetween. An adhesive material is disposed in the gap between the insulating substrate and the integrated circuit. Bumps project from the surface of the integrated circuit towards the surface of the insulating substrate. Electrode patterns are electrically connected to the bumps to electrically connect the integrated circuit to the electrode patterns. An adhesion-reinforcing pattern is spaced-apart from and surrounded by the electrode patterns. The adhesion-reinforcing pattern is disposed on a portion of the surface of the insulating substrate confronting a portion of the surface of the integrated circuit from which the bumps do not project.

Abstract: A fingerprint reading system is provided with enhanced versatility and reduced cost. The fingerprint reading sensor includes a group of first electrodes arranged in a plurality of lines extending in a first direction, a group of second electrodes arranged in a plurality of lines extending in a second direction intersecting the first direction above the first electrode group through an interlayer insulating film, and a surface protective film formed of a dielectric material provided on the second electrode group. Drive circuits detect electrostatic capacity between each of the electrodes and a finger touching the surface protective film by sequentially applying a predetermined voltage to both groups of electrodes and measuring a change in the electrostatic capacity at each point where a second electrode crosses over a first electrode.

Abstract: A fingerprint reading device is provided, which is capable of enhancing a versatility when actually used, increasing a productivity and reducing costs. The fingerprint reading device comprises an electrostatic capacity type fingerprint reading sensor provided on a liquid crystal panel, and drive circuits thereof. The fingerprint reading sensor includes detection electrodes arranged in predetermined positions, active elements connected respectively to the detection electrodes, and a protective film provided on the surface thereof.

Abstract: A display unit comprises a transparent touch switch and a liquid crystal display having a display surface. At least an input area of the transparent touch switch is laminated to the display surface of the liquid crystal display by clear adhesive. The clear adhesive has a permeability after hardening which is close to the permeability of the liquid crystal display and the transparent touch switch. Clear fillers are disposed in the clear adhesive to prevent warping of the transparent touch switch and the liquid crystal display.

Abstract: To make a display device compact and to provide an inexpensive, simple-structured display device. A structure where a terminal tip portion of a COF substrate is held folded down with a spacer sandwiched therebetween and is connected with a display element. A single COF is connected with a plurality of sides of the display element.

Abstract: A method of manufacturing a color filter for a multicolor liquid crystal display unit comprises the steps of forming an organic high-polymer color filter layer over a surface of a substrate. A protective film is then formed on the color filter layer and on the surface of the substrate. Thereafter, a thin metal electroless plating film is formed on the protective film. The electroless plating film is then patterned to form a shading film.

Abstract: A liquid crystal display device comprises a panel containing a liquid crystal and having an input wiring formed thereon. A film substrate is disposed over the panel and has wiring lines connected to the input wiring of the panel. At least one integrated circuit is disposed between the panel and the film substrate and has an input terminal connected to the input wiring of the panel for driving the liquid crystal.

Abstract: Drawn configurations of transparent electrodes from connection terminals to pixels in a liquid crystal display device are made different from each other according to the positional relationship between the pixels and the connection terminals, so that the resistance value of a drawn portion and the difference in resistance values between adjoining pixels are made low. This structure improves not only the picture quality of a liquid crystal display device with a wide pitch screen in which a multi-output terminal IC is connected by using fine electrodes, but also the patterning yield.

Abstract: A method of coating a conductive substance on a transparent electrode disposed on a substrate comprises disposing a resin containing the conductive substance over the surface of the substrate, and rubbing and pressing the resin over the surface of the substrate with a pressing shaft to coat a layer of the resin on the transparent electrode. A method of mounting a semiconductor device or the film substrate on the substrate having the transparent electrode coated with the resin layer containing the conductive substance comprises connecting a terminal portion of the semiconductor device or film substrate to the transparent electrode through the resin layer.