Sharp Kabushiki Kaisha Corporation

Shapr Kabushiki Kaisha

Hideki Ichioka

Tomohiko Yamamoto

Keiichi Tanaka

Naoto Inoue

Koji Fujiwara

Takayuki Murai

Kohji Fujiwara

Kouji Fujiwara

Naoko Kondoh

Noboru Noguchi

Hisashi Nagata

Hisao Okada

Youji Yoshimura

Yasunori Ake

A multi-display device includes an image-display-light emitting backlight which includes a light emitting element arranged in each of a plurality of areas to emit light to form planar light; and a light emission controller configured or programmed to generate emission luminance data, for each of the areas, to drive the light emitting element. The light emission controller includes a luminance correcting controller configured or programmed to correct the emission luminance data on the basis of installation directions of image display devices and connection information that is information on connection positions thereof.

Multi-display device and image display device

In order to display an image with a high contrast ratio while suppressing power consumed by a multi-display device and to adjust brightness of images displayed on image display devices, the multi-display device includes light emission APL value adjusting means. The light emission APL value adjusting meanssends, to light emission control means, a light emission APL value that has been adjusted, on the basis of light emission APL values calculated by light emission APL value calculating means of image display devicesto, so that total light emission power value of image-display light-emitting meansdoes not exceed an allowable power value and images are displayed at predetermined brightness.

Under management by a main microcomputer, an LED controller performs, along at least two directions within a plane of planar light formed by LEDs arranged in a matrix, brightness correction processing for adjusting the distribution of brightness of the planar light on light source color video signals to convert them into light source color video signals.

Illumination device, display device, data generation method, data generation program and recording medium

A method is disclosed for controlling a light source installed in a liquid crystal display device. An embodiment includes a liquid crystal display panel for displaying an image by virtue of having liquid crystals whose orientation changes in response to application of a voltage; a backlight unit with a built-in PWM light modulation type LED for emitting light to be supplied to the liquid crystal display panel; and a control unit for controlling the liquid crystal display panel and the backlight unit. When the response speed of liquid crystal molecules is relatively high, the LED is driven at a relatively low drive frequency, and when the response speed of the liquid crystal molecules is relatively low, the LED is driven at a relatively high drive frequency.

Liquid crystal display device

A display apparatus includes a liquid crystal display panel, a front side viscoelastic layer, a front side hard layer, a back side viscoelastic layer, a back side hard layer, a backlight unit, a driving circuit board, and a metal plate. The front side viscoelastic layer that is viscoelastic covers a display surface of the liquid crystal display panel. The front side hard layer has a higher modulus of elasticity than the front side viscoelastic layer. The back side viscoelastic layer that is viscoelastic covers a back surface of the liquid crystal display panel. The back side hard layer has a higher modulus of elasticity than the back side viscoelastic layer. The back side viscoelastic layer has a thickness Tb of not less than about 20 &#x3bc;m, and the front side viscoelastic layer has a thickness Ta and satisfies: Ta/Tb&#x3e;1 (Tb&#x2260;0). Thus, the display apparatus is resistant to breakage caused by a load placed on a display surface of the liquid crystal display panel and an impact when dropped, thereby attaining mechanical durability.

Display apparatus and electronic apparatus with the same

A liquid crystal display apparatus includes a liquid crystal display panel, a backlight system, a driving circuit board for driving the liquid crystal display panel and the backlight system, and a housing for housing the foregoing members. A metal plate is provided between the backlight system and the driving circuit board, which metal plate has a plane surface on a front and back surface which is broader than the backlight system and the driving circuit board. On at least a pair of opposed edges of the metal plate, at least one of a falling portion and a rising portion is provided along the edges of the metal plate. Further, a bezel is provided between the housing and at least one of the falling portion and rising portion, which bezel is arranged so as to integrally support the metal plate and at least the liquid crystal display panel and the backlight system. Hence, a liquid crystal display apparatus and an electronic apparatus including same are provided, which liquid crystal display apparatus is capable of reducing a possibility of breakage due to load placed on a display surface of the liquid crystal display panel or an impact when dropped.

Liquid crystal display device and electronic apparatus provided with same

A first arithmetic section is provided that calculates a first time, which is a time period from a transmission timing of a ultrasonic wave to a reception recognized timing at which a wave height value of the ultrasonic wave received by an ultrasonic wave receiving section crosses a predetermined threshold for a first predetermined number of times. A second arithmetic section is provided that calculates a second time as the propagation time of the ultrasonic wave, the second time being a time period from the transmission timing of the ultrasonic wave to a reception confirmed timing, which is a timing after the wave height value has crossed the predetermined threshold for a second predetermined number of times and before the wave height value crosses the predetermined threshold again, wherein the second arithmetic means varies the second predetermined number according to the first time. In this way, coordinates of a pointing device employing ultrasonic wave can be obtained with less error variation.

Coordinates input system, coordinates input method, coordinates input program, and computer-readable storage medium

The invention concerns an input device including an input receiving panel and a stylus enabling an input, the input device sensing an input by means of capacitive coupling between a panel electrode on the input receiving panel and a stylus electrode on the stylus, and includes: a signal supply section supplying an input sensing signal to the panel electrode; a signal detecting circuit detecting a signal generated in the stylus electrode; and an input sensing section comparing the input sensing signal with the detection signal detected by the signal detecting circuit and sensing an input based on a result of the comparison. An input-sensing digital code is superimposed on the input sensing signal. This allows for further reduction in the possibility of false sensing caused by noise than conventional techniques.

Input device and I/O-integrated display

A display device includes a display panel, a first protection layer having viscoelasticity, and a second protection layer having an elastic modulus higher than first protection layer. The first protection layer covers one face of the display panel and the second protection layer is arranged on the first protection layer to cover the display panel.

Display device

In an image display device which employs pulse width modulation driving, a voltage which is less than a voltage supplied to signal lines is applied to pixel electrodes. Tones are displayed by shifting phases of waveforms of the signal lines and scanning lines, and polarities of pixels in a signal line direction are inverted alternately. This prevents increase in power consumption which is caused by pulse intervals which become too small at high tone levels, in addition to preventing change in tone level due to external factors such as temperature, or signal delays in a driver or wiring.

Driving method of image display device, driving device of image display device, and image display device

An image display apparatus comprising an image display device, a shield member, and a drive mechanism. The drive mechanism drives the shield member in synchronization with display of the image.

Image display apparatus

Input position is accurately detected. In an x-detection period of a non-display period, a source drive circuit simultaneously applies to all signal wiring lines a pulse of a peak value proportional to a distance from a gate drive circuit. A coordinate detection circuit obtains an x-coordinate on the basis of a voltage induced at a pen corresponding to the peak value (x-coordinate) of the applied pulse. In a y-detection period, a pulse generation circuit applies one pulse to a common line. The pen detects a potential variation in amplitude proportional to a distance (y-coordinate) from the source drive circuit, generated approximately simultaneously on all the signal wiring lines via a capacitance. The coordinate detection circuit obtains the y-coordinate similarly to the case of x-coordinate detection.

Input-output integrated type display device

A display device is arranged in such a manner that rows on the screen on which pixel electrodes are provided in a matrix manner are sequentially selected so as to be scanned by scanning signal lines formed on a substrate, and a data signal is supplied from gray scale signal lines, which are formed on a counter substrate facing the substrate, to the pixel electrodes on the selected row, so that the display is carried out. Also, an idle period, (i) which is longer than a scanning period for scanning the screen once and (ii) during which period all scanning signal lines are in the state of non-scanning, is provided, and the scanning period and the idle period constitute one vertical period. With this arrangement, it is possible to (1) provide a driving method of a display device by which method the reduction of power consumption is sufficiently realized without causing the degradation of the display qualities, and (2) provide a display device using the same.

Driving method of display device and display device using thereof

A liquid crystal display device has a liquid crystal layer between a glass substrate and a counter substrate. A TFT and scanning lines which control the TFT are provided on the glass substrate. On the counter substrate, a gradation signal line which is connected to a counter electrode applying a voltage to the liquid crystal layer is provided opposite to the scanning lines. A sealing section for sealing the liquid crystal of the liquid crystal layer is provided while enclosing the display area between the glass substrate and the counter substrate. The sealing section has conductive particles. Upper contact pads connected to the gradation signal lines and lower contact pads on the glass substrate are electrically connected via the conductive particles. This realizes a liquid crystal display device with a smaller frame and makes the mounting compact in size without causing poor connection due to line breakage.

A display device includes: a first substrate including data electrodes and first and second groups of connecting pads; a second substrate, which faces the first substrate and which includes data signal input terminals, a spare line, and third and fourth groups of connecting pads opposed to the first and second groups of connecting pads, respectively; and a display medium layer interposed between the first and second substrates. The data signal input terminals are connected to the third group of connecting pads. In case of disconnection, a data signal to be supplied to one of the data electrodes may be input through the spare line. The fourth group of connecting pads crosses the spare line with an insulating layer interposed between them. Each pair of connecting pads in the first and third groups or the second and fourth groups is electrically connected together with an anisotropic conductive material.

Growing community of inventors

Nabari, Japan

Hideki Ichioka