Sharp Kabushiki Kaisha Corporation

Hidetaka Mizumaki

Yasukuni Yamane

Kazuhiko Miyata

Katsuya Mizukata

Yasuhiro Wakita

Tetsuo Iwaki

Chiaki Yamawaki

Seiji Muraoka

Daiichi Sawabe

Makoto Miyago

Masayuki Murao

The driving circuit of the liquid crystal display device according to the present invention classifies a combination of a displayed gray-scale level of a previous vertical scanning period and a regular gray-scale level corresponding to an input image signal in a current vertical scanning period into either a first group or a second group. The driving circuit is capable of supplying the gray-scale voltage corresponding to the regular gray-scale level for any combination belonging to the first group, and supplying a gray-scale voltage corresponding to an alternative gray-scale level which is different from the regular gray-scale level for any combination belonging to the second group.

Liquid crystal display device and driving method using alternative gray-scale voltage

A display panel is connected to a wiring-mounted board on which a signal supply wiring that supplies wiring supplies signals for driving the display panel is mounted. The wiring-mounted board has (i) first and second wires extending toward the display panel, and (ii) first and second terminals that are connected to the first and second wires, respectively. The display panel has a first short-circuit wire that is connected to the first and second wires at a connecting part of the display panel and the wiring-mounted board, so as to short-circuit the first and second wires.

Display panel, liquid crystal display device and drive-circuit-mounted board

In one embodiment of the present invention, a liquid crystal display device is provided with a gray scale conversion section which converts a gray scale conveyed by an input video signal into a gray scale value of a high gray scale region, and then outputs it to the liquid crystal drive device if the gray scale value of the input video signal is of a low gray scale region.

Liquid crystal display device, instrument panel, automotive vehicle, and liquid crystal display method

A display device includes a display panel for displaying information, and a driving circuit for driving the display panel. The driving circuit of the display device is capable of changing, with a lapse of display time, a displayed color of information which is statically displayed on the display panel.

Display device and instrument panel and automobile incorporating the same

A display device includes an illuminator; a display panel for performing displaying by using light which is emitted from the illuminator; and a control circuit for controlling the illuminator. The illuminator includes a plurality of light source blocks, at least one light source belonging to each of the plurality of light source blocks. A displaying region of the display panel has a plurality of regions each performing displaying by using light which is emitted from a respective one of the light source blocks. The control circuit detects a level of a display signal which is input to each of the plurality of regions, and is capable of controlling a luminance of the respective light source block in accordance with the detected level of the display signal.

Display device, instrument panel, automatic vehicle, and method of driving display device

A card-type sound apparatus has, on a card-shaped substrate, a combination of a sound signal input portion to which a sound signal is input from outside and a sound generation portion that generates sound according to the sound signal input to the sound signal input portion, or a combination of a sound collection portion that collects sound from outside and converts the sound into an electric signal and a sound signal output portion that outputs to outside the electric signal obtained from the sound collection portion, or both of these combinations. The sound generation portion generates sound by making the card-shaped substrate itself vibrate according to the sound signal input to the sound signal input portion. The sound collection portion collects sound by converting the vibration of the card-shaped substrate itself into an electric signal.

Card-type sound apparatus and electronic appliance provided therewith

The display device of the invention includes a display panel including a plurality of pixels arranged in a matrix of rows and columns, and switching elements each being connected to a corresponding one of the plurality of pixels; row driving circuits to for each selecting a row in the plurality of pixels by supplying a selection signal to the switching elements; column driving circuits for each supplying a data signal to pixels connected to the switching elements selected with the selection signal; and a black display signal generation circuit for generating a black display signal for causing the plurality of pixels to perform a black display. The data signal and the black display signal are supplied to each of the plurality of pixels during a period corresponding to one vertical scanning period. The display device further includes a black ratio control signal generation circuit for generating a black ratio control signal defining a ratio between a first period of retaining the data signal and a second period of retaining the black display signal.

Display device and driving method thereof

The display system of the present invention includes: a body unit () for transmitting image data that has been generated; and a display device () for displaying an image in accordance with the image data that has been transmitted from the body unit (), and said display system is characterized in that the body unit () and the display device () perform communications via radio communication means, and the body unit () and the display device () are separately providable. Thus, the radio transmission is used as communication means, and there is no cable, connecting the display device () and the body unit (), that transfers the data signal, so that the device user can operate the system freely while watching the display device (). As a result, it is possible to improve the workability of the user of the present display system. Further, since there is no wire connection section, using a connection clip, that is provided in a conventional display device, it is possible to simplify a mechanism for securing the strength of the wire connection section.

Display device and display system

There is provided a data signal line drive circuit which, when displaying a video signal composed of multiple display frames, drives in at least one of the display frames so as to produce a less-than-grayscale-level display frame where a data signal fed to the data signal lines contains a signal less than a grayscale level represented by the video signal. Thus, a data-hold-type display, a driver device for the display, a display method for the display are provided which is capable of preventing display quality degradation due to afterimages observable in moving image displays without reducing screen brightness.

Display, driver device for same, and display method for same

A display device is for carrying out display by supplying a data signal, that is supplied from a video signal line, to one of a plurality of pixel electrodes via a switching element, and by supplying a scanning signal for controlling ON/OFF state of the switching element to the switching element via a scanning signal line that is orthogonal to the video signal line and is connected to the switching element. When the scanning signal is outputted to the scanning signal line, the scanning signal has a falling waveform that first falls substantially vertically from an ON-level of the switching element in a direction of an OFF-level of the switching element, and then starts falling with a slope, and again falls substantially vertically before reaching the OFF-level of the switching element. As such, the writing of the data signal to the pixel electrode may be securely carried out even when the writing period for each scanning signal is reduced, thereby displaying a high-quality image.

Display device and driving circuit for the same display method

The display system of the present invention includes: a body unit for transmitting display data that has been generated; and a display device for displaying an image in accordance with the display data that has been transmitted from the body unit. The display system is characterized in that the body unit and the display device perform communications via radio communication means, and the body unit and the display device are separately provided. Thus, the radio transmission is used as communication means, and there is no cable connecting the display device and the body unit that transfers the display data, so that the user can operate the system freely while watching the display device.

A display apparatus has a display area which is divided into first and second display sections that can be independently driven in a scan direction and scanned collaterally. A control circuit controls signal line driving circuits such that the scanning signal lines of the respective display sections are sequentially selected during a plurality of time periods in one frame and the respective display sections are repeatedly scanned in one cycle as many times as the number of the time periods. The signal line driving circuits are supplied with one of the display data and interpolation display data during at least one time period, whereas supplied with the other one of the display data and the interpolation display data during at least one other time period. This ensures to avoid the reduction of brightness and to improve the display quality of moving images.

Data holding display apparatus, driving method thereof, and television set

A liquid crystal display device of the present invention includes (i) a temperature sensor provided in at least one of pixels in a displaying area of a display panel, (ii) a lead line buried in the display panel, for transmitting a detection signal from the temperature sensor to a vicinity of the display panel, (iii) a temperature measurement control section for measuring a pixel temperature based on the detection signal transmitted from the temperature sensor, (iv) a data signal line driving section for outputting the data signal to the data signal lines in accordance with the pixel temperature measured in the temperature measurement control section. Further, the liquid crystal display device of the present invention includes (i) a plurality of data generating sections for generating data signals of the different output levels based on an inputted video signal and a video signal that is at least one frame earlier than the inputted video signal, (ii) a data generating section containing section for containing therein the plurality of the data generating sections, and (iii) a memory for use in selecting one of the data generating sections on a line-by-line basis for the respective scan signal lines.

Liquid crystal display device and driving device thereof, and method for driving liquid crystal display device

A communications processing section of a management apparatus sends a request for malfunction information via the Internet to one or more electrical devices being managed. A database manager of the management apparatus refers to data stored in a database and updates the record of the electrical device therein. A timing control section of the management apparatus carries out control so that the number of electrical devices requested upon by the management apparatus does not exceed a predetermined value. In this way, despite the management apparatus centrally manages the malfunction information of each electrical device, a peak quantity of the malfunction information received by the management apparatus can be suppressed and the workload on the management apparatus can be relieved, as opposed to the case where each electrical device sends the malfunction information at its own timing. As a result, a management system of electrical devices is provided, which is capable of managing malfunction information of electrical devices without putting a heavy workload on the management apparatus.

Managing method of electrical device, management apparatus, electrical device, communications device, program therefor, and management system of electrical device

Growing community of inventors

Nara, Japan

Hidetaka Mizumaki