Nec Corporation

Getner Foundation LLC

Hiroshi Hayama

Ken Sumiyoshi

Takashi Nose

Shinichi Nishida

Jin Matsushima

Toshihiro Yoshioka

Hiroshi Tsuchi

Hiroyuki Uchida

Masayoshi Suzuki

Teruaki Suzuki

Takahiko Watanabe

Kazushige Takechi

Naoyasu Ikeda

Shin-ichi Uehara

Hiroshi Kanoh

Toshiya Ishii

Nobuaki Takanashi

Ken-Ichi Takatori

Osamu Ishibashi

Hiroshi Kanou

Shunji Noda

Tadayoshi Enomoto

Masaaki Yasumoto

A Liquid Crystal Display (LCD), a backlight used for the LCD and a method for producing the LCD and the backlight are provided which are capable of inhibiting an increase in component counts and in assembling processes and of reducing them, thereby achieving low costs. A display image is obtained by arranging a backlight section being able to perform scanning as a single unit in a manner that it positionally matches a liquid crystal displaying section. The backlight section is provided with a plurality of scanning electrodes and light emitting layers each providing a different luminescent color, and being spatially separated from each other on a principal face of the backlight and scanning is performed on a plurality of light emitting layers providing a different luminescent color.

Liquid crystal display device, backlight used for same display device, method for driving same backlight and method for manufacturing same backlight

An object is to narrow the width a frame part provided to a display device. The display device of the present invention comprises: a main substrate having display pixels being arranged in matrix, a scanning line electrode array, a signal line electrode array, and a frame part formed in an edge of the substrate along the scanning line electrode array and the signal line electrode array; a scanning line driving element mounted to the frame part along the scanning line electrode array; a signal line driving element mounted to the frame part along the signal line electrode array; and a flexible flat cable for supplying a signal and a power to the driving circuits of the scanning line driving element and the signal line driving element. The width of the frame part to which the signal line driving element is mounted is approximate to the width of the signal line driving element, and the width of the frame part to which the scanning line driving element is mounted is approximate to the width of the scanning line driving element. The length of at least the scanning line driving element or the signal line driving element is set shorter than the respective frame part so as to keep a space for mounting the flexible flat cable.

Display device and portable terminal using the same

A 3D image/2D image switching display apparatus is provided with a liquid crystal display unit and first and second lenticular lenses. To display a 3D image, the first lenticular lens is arranged in such a way that the optical axis of the first lenticular lens coincides with the optical axis of the second lenticular lens so that pixels for a left eye display an image for a left eye and pixels for a right eye display an image for a right eye. To display a 2D image, the first lenticular lens is arranged in such a way that the optical axis of the first lenticular lens is shifted from the optical axis of the second lenticular lens by half a lens pitch so that the pixels for the left eye and the pixels for the right eye display the same image independently.

3D image/2D image switching display apparatus and portable terminal device

A liquid crystal display device comprising a first polarizing sheet (), a color filter layer () formed on glass sheet (), a second polarizing sheet (), three-layered HPDLC () formed below the liquid crystal layer () and acting as a reflective structural layer having a reflectivity changed electrically, and a backlight unit as the lowermost layer. Each layer of the three-layered HPDLC () is composed of a liquid crystal droplet layer polymer layer and reflects blue, green, red by Bragg reflection. When voltage is applied to the three-layered HPDLC (), the reflectivity of liquid crystal droplet layer of each layer change, so that the HPDLC can be made transparent by equalizing the reflectivities of the liquid crystal liquid droplet layer to those of polymer layers.

Liquid crystal display device having switchable reflective layer

The provision of a liquid crystal display driving process which prevents the appearance of motion blur without any increase in circuit size or any reduction in panel numerical aperture. A driving process for a liquid crystal display in which a plurality of scanning lines and a plurality of signal lines are disposed in a grid like arrangement, and display of an image corresponding with image data is performed by selecting any one of the scanning lines at one time, and altering the state of a liquid crystal via the signal line , wherein an image data selection period t and a black display selection period t are set within a time frame shorter than the time necessary for scanning any one of the aforementioned scanning lines , and an image corresponding with the aforementioned image data is displayed via the aforementioned signal line during the image data selection period t , and a monochromatic image is displayed via the aforementioned signal line during the black display selection period t

Driving process for liquid crystal display

A multi-domain liquid crystal display device having sharp contrast and excellent viewing angle characteristics is provided without increased complicated processes such as microfabrication for a common electrode or without the necessity for highly sophisticated laminating technology. The multi-domain liquid crystal display device is composed of a control electrode connected to a source terminal being one of terminals of a TFT (Thin Film Transistor) serving as a switching device, a picture electrode having an aperture section provided with one coupling capacitor connected between the pixel electrode and the control electrode, wherein a partial voltage of a signal voltage is applied to the pixel electrode through the other coupling capacitor.

Multi-domain liquid crystal display device

An amorphous silicon thin film transistor for active matrix liquid crystal displays according to the present invention comprises a transparent conductive film, which is formed together with a picture element electrode, a metal film, which is formed together with a signal wiring, a multi-layer film, and an insulation substrate. The multi-layer film, which consists of a semi-conductor film, a gate insulation film and a gate metal film, is placed on the transparent conductive film and metal film overlapping respectively at both edges of the multi-layer film.

Field-effect transistor and fabrication method thereof and image display apparatus

A liquid crystal display has a holographic polymer dispersed liquid crystal between transparent substrates, and a plurality of phase gratings are formed in the holographic polymer dispersed liquid crystal so as to selectively reflect light components for the three primary colors.

Holographic polymer dispersed liquid crystal structure having at least two phase gratings whose reflecting surfaces are not parallel to each other, color display unit using the same and process of fabricating thereof

Field-effect transistor and fabrication method thereof and image display

A drive circuit is provided which enables low-power-consumption drive of even a low-voltage capacitive load. The drive circuit used has a capacitance, one end of which is grounded and other end of which is connected in series via an analog switching circuit to one end of an inductive element, thereby forming a series LC resonant circuit, the other end of the inductive element being connected to one end of a capacitive load, the other end of which is grounded, a PMOS switching element being connected between the ungrounded end of the above-noted load capacitance and a positive drive voltage supply and an NMOS switching element being connected between the ungrounded end of the load capacitance and a ground terminal.

Capacitive load drive circuit and method

A driver circuit for a liquid crystal display device has an output terminal, an N-MOS transistor, a P-MOS transistor, a first semiconductor switch connected between the output terminal and the N-MOS transistor and, a second semiconductor switch connected between the output terminal and the P-MOS transistor. Each of the N-MOS transistor and the P-MOS transistor have source, drain, gate and substrate, and form a power source portion taking the source as an output side. The first and second semiconductor switches have control inputting means for inputting a switching control signal for alternately outputting the output voltages of the N-MOS transistor and the P-MOS transistor through the output terminal. The drain, gate and substrate voltages are set so that the output voltage output from the N-MOS transistor is greater than the output voltage output from said P-MOS transistor.

Driver circuit for liquid crystal display device

In a multi-valued voltage generating circuit including a voltage divider connected between first and second nodes and formed by a series of resistors, and an output circuit, connected to the first and second nodes and nodes of the resistors, for selecting one of voltages at the first and second nodes and the nodes of said resistors and generating the one of voltages at an output terminal, first and second control voltage circuits are connected to the first and second nodes to control an output voltage at the output terminal to compensate for fluctuations of the threshold voltages of MOS transistors of the output circuit. Also, first and second current control circuits are connected to the first and second nodes, to control currents flowing through the series of resistors to control a difference in potential between the first and second nodes at a certain value and to compensate for the fluctuation of the resistance.

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Tokyo, Japan

Hiroshi Hayama