Nec Corporation

Gold Charm Limited

Ken-Ichi Takatori

Ken Sumiyoshi

Masayoshi Suzuki

Teruaki Suzuki

Yoshihiko Hirai

Hiroshi Kanoh

Toshiya Ishii

Michiaki Sakamoto

Seiji Suzuki

Yuji Yamamoto

Mamoru Okamoto

Hiroaki Matsuyama

Kiyomi Kawada

Setsuo Kaneko

Hideo Shibahara

Masao Imai

Shin-ichi Uehara

Hideki Asada

Kazunori Kimura

Takashi Nose

Takahiko Watanabe

Naoyasu Ikeda

Hideya Murai

Jin Matsushima

Goroh Saitoh

Hiroshi Hayama

Yoriko Hatada

A data signal voltage on a signal lineis held in a voltage holding capacitorthrough an n-type MOS transistorswitched on by a gate scan voltage, and supplied to an analog amplifier circuit-. The analog amplifier circuit-is formed of an MOS transistor having a double gate structure, and the operating point thereof is set at an operating range in which dependence of Ids on Vds is substantially nullified. Even when Vds is varied due to a response of liquid crystal, Ids is substantially fixed. Accordingly, the pixel voltage which is substantially proportional to the data signal voltage can be applied to the liquid crystal

Method for setting transistor operating point and circuit therefor, method for changing signal component value and active-matrix liquid crystal display device

A data signal voltage on a signal line is held in a voltage holding capacitor through an n-type MOS transistor switched on by a gate scan voltage, and supplied to an analog amplifier circuit. The analog amplifier circuit is formed of an MOS transistor having a double gate structure, and the operating point thereof is set at an operating range in which dependence of Ids on Vds is substantially nullified. Even when Vds is varied due to a response of liquid crystal, Ids is substantially fixed. Accordingly, the pixel voltage which is substantially proportional to the data signal voltage can be applied to the liquid crystal.

A liquid crystal display having a wide viewing angle and easily manufactured. The liquid crystal display comprises an upper substrate and a lower substrate, and a liquid crystal material disposed between the upper substrate and the lower substrate. The liquid crystal display has a conductive protrusion disposed on the surface of the upper substrate opposing to the lower substrate. The conductive protrusion is disposed over a scanning electrode line or a signal electrode line and has the same potential as that of the upper electrode. As another structure, each of pixel electrodes on the lower substrate has a smaller area than that of a common electrode on the upper substrate and is covered by the common electrode, and each of the pixel electrodes comprises an electrode portion having approximately symmetrical shape.

Liquid crystal display and method of manufacturing the same and method of driving the same

In a method for driving a liquid crystal display apparatus in which in each field, scan lines are successively scanned in order to display an image, the scanning sequence or the polarity of a signal voltage is reversed between a first field and a second field. A liquid crystal display apparatus driven by the method is also disclosed. It is possible to provide a high contrast, high brightness liquid crystal display apparatus which is not affected by electrical asymmetry.

Liquid crystal display apparatus and method of driving the same

A liquid crystal display device of the invention has data drive circuits provided along both of two opposite sides of a rectangular display region, and gate drive circuits provided along the other two opposite sides. With the liquid crystal display section, the gate drive circuits are formed severally divided, and each data line group respectively extending from each of the data drive circuits is electrically separated respectively by the severally divided gate drive circuits. Moreover, the liquid crystal display section comprises a color/time division incident optical system arranged so as to sequentially shine light with different chromaticity onto the display region, and a synchronizing section for synchronizing the liquid crystal display section and the color/time division incident optical system under predetermined conditions.

Liquid crystal display device and method for driving the same

Liquid crystal display unit and method for driving the same

A hold LCD unit has an array of pixels including a first group of higher luminance pixels which pass a higher luminance state to a stable luminance state in each field, and a second group of lower luminance pixels which do not pass such a higher luminance state. The average luminance of the first group in each field assumes a desired luminance for each pixel of the first group. The configuration of the LCD unit removes the tail of moving object as observed in the moving picture.

Hold display unit for display of a moving picture

An optical modulation element includes a liquid crystal layer, white light source, and at least one flat mirror. The liquid crystal layer has a helix pitch and is held between a pair of transparent substrates having opposing transparent electrodes. The white light source sends white light onto a surface of one of the transparent substrates of the liquid crystal layer in an oblique direction. The flat mirror is arranged outside the other one of the transparent substrates to reflect the incident light transmitted through the liquid crystal layer toward the light source.

Liquid crystal optical modulation element, and color filter and liquid crystal display device using the same

A light modulator is comprised of two unit devices each using surface plasmon generated at the interface between thin metal films respectively formed on prisms and an electro-optical material, and a mirror. Both of the transmitted light due to absorption and re-radiation, and the reflected light arising from the unit devices are made into the outgoing light, the incident light on the next unit device, or the incident light on the mirror. Consequently, all light beams can be utilized as the final outgoing light beams with no loss of light. Further, the color of light can be spatially divided, and still further, it can also be temporally divided by changing the wavelength due to a voltage. As a result, the original light can be divided both temporally and spatially with almost no loss by combining two unit devices so configured as to re-radiate the absorbed light by surface plasmon using surface plasmon and a mirror, and thus utilizing both of the reflected light and the transmitted light.

Light modulator, light source using the light modulator, display apparatus using the light modulator, and method for driving the light modulator

Growing community of inventors

Tokyo, Japan

Ken-Ichi Takatori