Abstract: The present invention provides a display device used in a miniaturized portable equipment which is capable of driving two display panels consisting of main and sub display panels. The display device includes a main display panel, a sub display panel and a drive circuit. The drive circuit can simultaneously drive the main display panel and the sub display panel. Output terminals are provided to the main display panel and signals are transmitted to the sub display panel from the output terminals. Further, the drive circuit includes a power source circuit which is capable of outputting proper common voltages to the main display panel and the sub display panel.

Abstract: A mobile communications terminal has a communications processor controlled by a communications CPU and an application control processor controlled by an application CPU. When software program for communications is distributed from the control system side, the application CPU halts the communications processor and carries out update processing of software program of the communications processor. Further, when software program for application is distributed from the control system side, the communications CPU halts the application control processor and carries out updating of software program of the application control processor.

Abstract: The present invention provides a liquid crystal display device which can be used in a miniaturized portable equipment, wherein the liquid crystal display device integrally incorporates a drive circuit therein so that a circuit scale can be miniaturized. A liquid crystal drive circuit includes a first drive circuit and a second drive circuit which is mounted on one side of the liquid crystal display panel. One output of the first drive circuit is connected to a plurality of signal lines and the second drive circuit supplies signals to the first drive circuit. The liquid crystal display panel includes holding capacitive elements and signals are supplied to the holding capacitive elements from the second drive circuit. The second drive circuit includes a booster circuit for supplying signals to the first drive circuit and the holding capacitive elements.

Abstract: A liquid crystal display device is provided with a driver circuit which can cope with an increase in the number of pixels per device. The liquid crystal display device has signal lines for driving individual pixels and a driver circuit connected to the signal lines, on a liquid-crystal-side surface of either one of substrates disposed to oppose each other with a liquid crystal interposed therebetween. The driver circuit includes a film substrate, interconnection layers formed on a surface of the film substrate, and a semiconductor chip mounted on the film substrate, and bumps are formed on the semiconductor chip inwardly of the periphery thereof. Some of the interconnection layers are connected to the bumps of the semiconductor chip, and then run under the semiconductor chip and extend to the periphery of the film substrate.

Abstract: A liquid crystal display element having pixels, video signal lines applying a video signal voltage to the pixels and a video signal line driver supplying the video signal voltages to the video signal lines. The video signal line driver circuit includes a gray-scale voltage generating circuit provided with a resistor circuit dividing voltages between plural gray-scale reference voltages to generate plural gray-scale voltages, and selector circuits selecting one gray-scale voltage in accordance with the display data. The resistor circuit includes a resistive element provided with plural Intermediate taps for dividing voltages to generate the gray-scale voltages, gray-scale voltage lines corresponding to the gray-scale voltages, an interlayer insulating film insulating the gray-scale lines from the resistive element, and connections connecting the gray-scale voltage lines to corresponding ones of the intermediate taps through a hole in the interlayer insulating film.

Abstract: The present invention provides a liquid crystal display device which can be used in a miniaturized portable device, wherein the liquid crystal display device has a small area for mounting driving circuits and allows the free mounting of the driving circuits. In the liquid crystal display device having a liquid crystal display element and a liquid crystal driving circuit, the liquid crystal driving circuit is mounted on one side of the liquid crystal display panel. Driving circuits for driving scanning signal lines are provided in plural. The scanning signal line driving circuits sandwich a circuit for driving video signal lines and are arranged in line with the video signal line driving circuit. Lines for transmitting signals to the scanning signal lines are connected to the scanning signal lines from left and right sides of the liquid crystal display panel so as to perform a control of the driving circuits in response to external signals.

Abstract: A liquid crystal display device includes a liquid crystal panel having plural pixels and a video signal line driver circuit for supplying a video signal voltage to each of the pixels via a corresponding one of plural video lines in accordance with a P-bit display data.

Abstract: A liquid crystal display device including a liquid crystal panel having a plurality of pixels, a driving circuit applying a video signal voltage to each of the pixels in accordance with display data. The driving circuit has a first circuit, a second circuit, and a switching circuit which connects an output terminal of the first circuit with an input terminal of the second circuit. The first circuit outputs a first voltage and a second voltage in accordance with first display data, and outputs the second voltage and a third voltage in accordance with second display data. The second voltage is lower than the first voltage, and the third voltage is lower than the second voltage.

Abstract: A liquid crystal display device includes plural pixels supplied with video signal voltages via video signal lines, and a video signal line driver circuit for supplying the video signals voltage to the video signal lines. The video signal line driver circuit includes plural differential amplifiers each having a pair of a first input terminal and a second input terminal and amplifying inputted video signals and supplying the amplified video signal to the video signal lines, a plurality of pairs of an inverting input terminal and a noninverting input terminal each pair corresponding to each of the differential amplifiers.

Abstract: A MOS transistor (M1) which is arranged in the highest order of a low Vth MOS transistor grayscale group of a decoder circuit of a drain driver is formed of a CMOS transistor, to prevent a current from flowing from an output side into the low Vth MOS transistor portion owing to a grayscale voltage applied to another portion.

Abstract: The present invention relates to a communication system which, on the basis of a mail address including a telephone number of a destination and a domain name of a telecommunication services operator, exchanges electronic mail information, and which comprises a communication device for inputting the telephone number including an operator code and for exchanging the electronic mail information in accordance with the mail address; a storage device which stores a reference table in which the operator code is corresponded to the domain name; and a communication management device which uses the operator code as an address to read out the domain name of the telecommunication services operator so as to establish the mail address by combining the telephone number input through the communication device and the domain name read out from the storage device.

Abstract: A liquid crystal display device includes plural pixels supplied with video signal voltages via video signal lines, and a video signal line driver circuit for supplying the video signals voltage to the video signal lines. The video signal line driver circuit includes plural differential amplifiers each having a pair of a first input terminal and a second input terminal and amplifying inputted video signals and supplying the amplified video signal to the video signal lines, a plurality of pairs of an inverting input terminal and a noninverting input terminal each pair corresponding to each of the differential amplifiers.

Abstract: A liquid crystal display device includes a liquid crystal display element and an image signal line drive unit for supplying a gradation/tone voltage and having a plurality of semiconductor integrated circuit devices. Each semiconductor integrated circuit device has an input circuit unit which is provided at a central portion along a longitudinal direction of the semiconductor integrated circuit device and provided in a short side direction of the semiconductor integrated circuit device. A first output terminal section is provided in the longitudinal direction of the semiconductor integrated circuit device on both sides of a central portion in the short side direction of the semiconductor integrated circuit device of the input circuit unit, and a pair of output circuit units are provided on the both sides of the first output terminal section in the short-side direction of the semiconductor integrated circuit device.

Abstract: A liquid crystal display device capable of improving display quality by enabling proper execution of receipt and acceptance of image signals through compensation for variation in duty ratios of clock signals as input to liquid crystal driver circuitry, is provided.

Abstract: A liquid crystal display device in which bump electrodes of a semiconductor chip included in a video signal line driving circuit are disposed over noise-absorbing protective diodes so that the area occupied by the semiconductor chip is decreased to reduce the size of the video signal line driving circuit.

Abstract: A liquid crystal display device including a liquid crystal panel having a plurality of pixels, a driving circuit applying a video signal voltage to each of the pixels in accordance with display data. The driving circuit has a first circuit, a second circuit, and a switching circuit which connects an output terminal of the first circuit with an input terminal of the second circuit. The first circuit outputs a first voltage and a second voltage in accordance with first display data, and outputs the second voltage and a third voltage in accordance with second display data. The second voltage is lower than the first voltage, and the third voltage is lower than the second voltage.

Abstract: A liquid crystal display device is capable of generating gradation voltages for multilevel gradation, such as 256-level gradation, without increasing the chip size of video signal line driving means.

Abstract: A liquid crystal display device includes a video signal line drive circuit which includes (1) a first drive voltage circuit including at least one first output circuit which outputs an LC driving voltage of positive polarity corresponding to display data, and at least one second output circuit which outputs an LC driving voltage of negative polarity corresponding to display data, the at least one first output circuit and the at least one second output circuit being arranged alternately in a first polarity order, (2) a second drive voltage circuit including at least one third output circuit which outputs an LC driving voltage of positive polarity corresponding to display data, and at least one fourth output circuit which outputs an LC driving voltage of negative polarity corresponding to the display data, the at least one third output circuit and the at least one fourth output circuit being arranged alternately in a second polarity order opposite to the first polarity order, (3) a first switching circuit which

Abstract: A television receiver having an integral design without spoiling the external appearance includes a panel sheet (4) on which an operation unit (6) corresponding to the operation unit arranged in the cabinet, a filter unit (7) corresponding to the light sensor unit, and a sound output unit (8) corresponding to the sound output unit which are formed integrally and is attached to the cabinet of the television receiver.

Abstract: A method of driving the liquid crystal display device includes the steps of preparing a first drive voltage circuit formed by plural first output circuits having a latch circuit for latching display data and being connected to the latch circuit and outputting LC driving voltages of positive polarity and second output circuits having a latch circuit for latching display data and being connected to the latch circuit and outputting LC driving voltages of negative polarity arranged alternately, and a second drive voltage circuit formed by plural first output circuits having a latch circuit for latching display data and being connected to the latch circuit and outputting LC driving voltages of positive polarity and second output circuits having a latch circuit for latching display data and being connected to the latch circuit and outputting LC driving voltages of negative polarity arranged alternately in opposite polarity.