Japan Display Inc.

Renesas Electronics Corporation

Toshiba Matsushita Display Technology Co., Ltd.

Japan Display Central Inc.

Renesas Technology Corp.

Toshiba Mobile Display Co., Ltd.

Shin Morita

Goro Sakamaki

Norihisa Yamamoto

Tatsuya Ishii

Toshikazu Tachibana

Yuri Azuma

Kazuhiko Kanda

Takamitsu Fujimoto

Masanobu Yoneyama

According to one embodiment, a liquid crystal display device includes a first substrate including an insulative substrate, a first electrically conductive layer, a second electrically conductive layer, a third electrically conductive layer, a fourth electrically conductive layer. The first electrically conductive layer includes a gate line located on the insulative substrate, a common potential line and a first pad portion. The second electrically conductive layer includes a common electrode which is located on the insulative substrate and is put in contact with the common potential line, and a second pad portion stacked on the first pad portion. The fourth electrically conductive layer includes a pixel electrode in which a slit facing the common electrode is formed, and a third pad portion which is put in contact with the second pad portion.

Liquid crystal display device

In one embodiment, a first wiring line is pulled out from an active area, and a short ring circuit is provided in a peripheral portion of the active area. A first electrode is formed in the same layer as the first wiring line. A semiconductor layer is formed on the first electrode. A portion of a second electrode faces the first electrode through an insulating layer and arranged on the semiconductor layer. A third electrode is arranged on the semiconductor layer in the same layer as the second electrode. The first electrode includes a cutout portion arranged under an edge of the second electrode.

The present invention provides a noncontact interface technique capable of performing communication operation without stopping an internal operation even when a clock signal cannot be extracted from a carrier wave. In a semiconductor device that receives a modulated carrier wave from an antenna, generates an internal clock signal on the basis of a clock signal extracted from the received carrier wave, and performs operation synchronously with the internal clock signal, a PLL circuit that receives the extracted clock signal and generates the internal clock signal is provided with a voltage control oscillation function. In the case where the clock signal extracted from the carrier wave is discretely interrupted, the function makes the internal clock signal maintained at a frequency immediately before the interruption. With the configuration, even when the clock signal extracted from the carrier wave is interrupted, internal data processes such as decoding and bus interfacing can be continued.

Semiconductor device, portable communication terminal, IC card, and microcomputer

In a liquid crystal display apparatus, a pair of substrates has surfaces which is so arranged as to be opposed to each other. The one of the opposed surfaces has a display region in which pixels are arrayed in a matrix. A liquid crystal layer is held between the opposed surfaces of the pair of substrates. A first shading portion is arranged to surround the display region. A second shading portion is arranged between the first shading portion and an outer peripheral end of the one of the substrates, and is formed as discontinuous segments.

Liquid crystal display apparatus

In one embodiment, a liquid crystal display device includes a liquid crystal display panel having an active area for displaying images. The active area has pixels arranged in a matrix shape. The liquid crystal display device includes a first substrate having pixel electrodes of the pixels, a second substrate having a plurality of colored layers arranged side by side, and a counter electrode arranged on the colored layers facing the respective pixel electrodes. A seal element is arranged on a seal portion surrounding the active area and attaching the first substrate and the second substrate. A liquid crystal layer is held between the first substrate and the second substrate. The second substrate includes a convex portion arranged between the seal element and the active area, and the convex portion is formed of the same material as one of the plurality of colored layers.

It is intended to reduce the number of exclusive signal interconnections for connecting a host module to a liquid crystal display driver for a sub-display, and peripheral devices, respectively. A liquid crystal display drive and control device comprises, over one semiconductor substrate, a host interface circuit, a drive circuit, and an output port. The host interface circuit is used for connection with the host module. The drive circuit generates a drive signal for driving a liquid crystal display on the basis of information inputted to the host interface circuit before outputting. The output port is capable of controlling a logic level of an output signal on the basis of the information inputted to the host interface circuit. The liquid crystal display drive and control device is capable of performing the function of distributing signals to circuits subjected to control by level signals with determined logic levels, respectively, such as strobe control of a liquid crystal display driver for a sub-display, control of peripheral devices including a camera flashlight, and so forth.

Liquid crystal display drive and control device, mobile terminal system, and data processing system

A liquid crystal display device having a non-rectangular display panel includes an active area which is defined by a peripheral shield layer. A plurality of pixels are formed in the active area in a matrix, and each pixel includes a plurality of sub-pixels to display colors different from each other. A part of the sub-pixels of peripheral pixels located in a peripheral region of the active area is covered with a peripheral shield layer. Shield elements are arranged in the sub-pixels which are not covered with the peripheral shield layer so that an effective display area of each of the sub-pixels of the peripheral pixel is substantially equal.

A liquid crystal display device having a non-rectangular display panel includes an active area which is defined by a peripheral shield layer. A plurality of pixels are formed in the active area in a matrix and typically each pixel includes a plurality of sub-pixels to display respective different colors. The pixels include a first pixel arranged in the peripheral region of the active area and a second pixel arranged at an inner region. A part of the first pixel located in a peripheral region of the active area is covered with the peripheral shield layer. The thickness of the color filter layer arranged in the first pixel where the peripheral shield layer overlaps with the first pixel is smaller than that of a same color filter arranged in the second pixel having a larger effective display area than that of the first pixel area.

A liquid crystal display device includes an array substrate having a power supply line for supplying a power voltage to a counter electrode of a counter substrate. The power supply line connects a power pad arranged at a corner of the array substrate to a common line which is arranged between an active area and a seal portion, crossing the seal portion provided at a peripheral portion of the array substrate so as to surround the active area. The array substrate further includes at least two block elements with a convex shape for blocking the flowing out of the sealing element to the active area. The block elements are arranged so as to cross the power supply line and face the power supply pad. A gap between the block elements and the counter substrate is smaller than a gap between the slit formed by the adjacent block elements and the counter substrate.

An array substrate of a liquid crystal display device includes an insulating substrate, a gate line extending in a first direction on the insulating substrate, a first insulation film which is disposed to cover the gate line, pixel electrodes which are disposed on the first insulation film in respective pixels, a source line which is disposed on the first insulation film and extends between the pixel electrodes along a second direction, a second insulation film which is disposed to cover the pixel electrode and the source line, and a common electrode which is disposed on the second insulation film in a manner to face the pixel electrode of each of the pixels and to face the gate line, and includes a slit which is opposed to the pixel electrode.

In a semiconductor integrated circuit device of a liquid crystal display drive controller, the present invention is intended to suppress an increase in the number of output terminals for interface control signals for control of parallel interface to a sub liquid crystal display controller. A host interface circuit comprises a first serial interface circuit for serial data input and output in a differential manner, a parallel interface circuit, and other interface circuits. When the first serial interface circuit is selected for use as the host interface, the host interface circuit outputs in parallel predetermined information input via the first serial interface circuit from the parallel interface circuit to outside and generates interface control signals for the parallel output. External terminals for host interface assigned to the other interface circuits are used for double duty to output the interface control signals.

Growing community of inventors

Ishikawa-ken, Japan

Shin Morita