Fujitsu Corporation

Sharp Kabushiki Kaisha Corporation

Fujitsu Display Technologies Corporation

Takae Ito

Satoshi Sekido

Koichi Katagawa

Katsuyoshi Hiraki

Toshimitsu Minemura

Katsunori Tanaka

Mikio Oshiro

Hidefumi Yoshida

Yuichi Inoue

Takashi Sasabayashi

Toshiaki Suzuki

Shinpei Nagatani

Katsuhiko Kishida

Yasutake Furukoshi

Seiji Hayashimoto

Masaki Miyahara

Hiromi Enomoto

Kazuhiro Nukiyama

Hirokazu Miwa

A liquid crystal display apparatus includes a liquid crystal display unit, a plurality of data driving units which provide image data to said liquid crystal display unit, and a control unit which enables said plurality of data driving units to take in the image data simultaneously if the image data to be provided to said data driving units are identical.

Liquid crystal display apparatus and reduction of electromagnetic interference

Polarity patterns (polarity pattern signal POL) are stored in a ROM in a polarity pattern controlling portion. Then, the polarity pattern is changed according to applications of a liquid crystal display panel. Since the polarity pattern is stored in the ROM, the polarity pattern can be changed without modification of a hardware. Also, two sets of polarity patterns or more are stored in the ROM, and then any one polarity pattern can be output according to the application. In addition, the polarity pattern signal POL and image signals RGB are compared with each other, and then the polarity pattern which is to be read from the ROM is switched according to the result.

Display panel driving method, display panel driver circuit, and liquid crystal display device

A liquid crystal display can operate with as small a number of control signals supplied to individual drivers as possible while current control functions are maintained. The liquid crystal display comprises a liquid crystal panel containing a data line, a data driver driving a data line, and a controller outputting N control functions controlling a driving operation the data driver driving the data line through less than or equal to (N&#x2212;1) control signal lines connected to the data driver.

Liquid crystal display having data driver and gate driver

A liquid crystal display device has a liquid crystal panel displaying an image. A printed circuit board is arranged along one side of the liquid crystal panel, and a plurality of flexible printed circuit boards connect the liquid crystal panel and the printed circuit board. At least two driver ICs are mounted on each flexible printed circuit board and the at least two driver ICs are cascaded with respect to input signals.

Liquid crystal display device with flexible printed circuit board

A liquid crystal display apparatus displaying an image on a liquid crystal panel thereof includes a driving driver driving the liquid crystal panel, a control signal forming circuit generating two clock signals CK and CK by dividing a clock signal CK used for transferring image display data to the liquid crystal panel, transmission lines transmitting the clock signals CK and CK , and an exclusive OR circuit restoring the clock signal CK based on the two clock signals CK and CK and supplying the restored clock signal CK to the driving driver.

Liquid crystal display apparatus and method for controlling the same

A liquid crystal display device for displaying a predetermined display data on selected pixels on a liquid crystal display panel is disclosed. The liquid crystal display device includes a maximum amplitude display data detecting unit for detecting the display data corresponding to the maximum drive voltage having a maximum amplitude outputted from a data driver; and a variable output voltage type power source circuit portion for generating a power source voltage to be applied to the data driver and capable of changing the power source voltage based on the result of detection by the maximum amplitude display data detecting unit. The variable output voltage type power source circuit portion selects the power source voltage required for displaying the display data and supplies the selected power source voltage to the data driver for each predetermined period, for example, each one-frame period. A drive circuit for the liquid crystal display device of this configuration and a method for driving the liquid crystal display device by the drive circuit are also disclosed.

Liquid crystal display device, drive circuit for liquid crystal display device, and method for driving liquid crystal display device

A drive circuit for a display device including a display panel for displaying an image line by line has a data register. The data register is used to store optional data in response to a control signal, to overwrite the stored optional data with display data, and to prepare display data for a given line of the display panel. The data prepared in the data register is transferred to the display panel to display the given line of the display panel. The drive circuit is capable of supplementing display data if the display data is improper for the display, thereby securing the quality of the displayed images.

Display device, drive circuit for the display device, and method of

A driving circuit for driving an LCD, using frame modulation, includes: a data converting circuit for frame modulation having at least two averaged patterns for use in averaging brightness during frame modulation and converting display data using the averaged patterns and a display data detecting circuit for detecting the logical states of at least two leading dots specified in said display data. The data converting circuit for frame modulation controls switching of the at least two averaged patterns according to the result of detection. This configuration makes it possible to substantially prevent the occurrence of flickers irrespective of the display pattern. This contributes to realization of an excellent display.

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Kawasaki, Japan

Takae Ito