Casio Computer Co., Ltd.

Kyocera Corporation

Eiji Yamakawa

Fumiaki Ochiai

Yoshinori Asami

Takahiro Ono

Takashi Sano

Takanobu Suzuki

Tomoo Kasuo

Mitsuo Matsunaga

Kei Hanzawa

A display apparatus includes a protecting plate formed of a material which transmits light, light transmitting type solar panel which is positioned below the protecting plate, a display below the light transmitting type solar panel, which is provided in contact with the light transmitting type solar panel, and which includes a display region which can be viewed from outside. An air layer which is positioned between the protecting plate and the light transmitting type solar panel, and at least one light reflection prevention layer on at least one of a first surface of the protecting plate facing the air layer and a second surface of the light transmitting type solar panel facing the air layer, wherein the display region of the display can be viewed from outside through the protecting plate, the at least one light reflection prevention layer, the air layer, and the light transmitting type solar panel.

Display apparatus and watch

A display apparatus includes the following. A protecting plate is formed of a material which transmits light. A light transmitting plate is positioned below the protecting plate and is positioned in contact with the protecting plate. A display is provided below the light transmitting plate and includes a display region which can be viewed from outside. An air layer is positioned between the light transmitting plate and the display. A light reflection prevention layer is provided on at least one of a surface of the light transmitting plate facing the air layer and a surface of the display facing the air layer. The protecting plate, the light transmitting plate, the display, the air layer, and the light reflection prevention layer are layered in a thickness direction of the protecting plate. A region in the protecting plate overlapped with the display region of the display includes a window with which waterproof inspection is performed.

A liquid crystal control circuit includes: a first terminal that outputs a rewriting signal for rewriting a plurality of pixels; a second terminal that periodically designates a start timing of the rewriting signal; a third terminal that outputs a polarity signal for designating polarity of AC voltage; a first circuit that identifies a next second inversion timing of any first inversion timing at which the polarity is inverted; a calculator that calculates a first start timing after the first inversion timing based on the start timing; a second circuit that determines whether the second inversion timing is within a period from a predetermined time before the first start timing to the first start timing; and an inversion unit that inverts polarity of the polarity signal after the rewriting signal starting from the first start timing is stopped, when the second inversion timing is within the period.

Liquid crystal control circuit, electronic timepiece, and liquid crystal control method

An electronic device includes a rechargeable battery, a first battery charger that charges the rechargeable battery by power supplied from an external power supply, a second battery charger that charges the rechargeable battery by a solar panel, and a processor that charges the rechargeable battery to a first voltage by the first battery charger, and charges the rechargeable battery to a second voltage lower than the first voltage by the second battery charger.

Electronic device, electronic timepiece and battery charging method

A dot matrix display device includes a pixel redraw control unit and a decoder unit. The pixel redraw control unit generates a gate selection signal identifying an address in one direction, a source selection signal identifying an address in another direction intersecting the one direction, and image data which correspond to a pixel electrode part based on a serial signal including an address signal identifying an address of the pixel electrode part and an image signal supplied to the pixel electrode part. The decoder unit supplies a gate signal which activates a gate signal line corresponding to the pixel electrode part based on the gate selection signal, generates a source signal which activates a source signal line corresponding to the pixel electrode part based on the source selection signal, and supplies the image data to the pixel electrode part corresponding to the activated source signal line.

Dot matrix display device and time display device

An electronic device includes: a TFT liquid crystal panel; a light source that emits light to be radiated onto a back face of the TFT liquid crystal panel; and a processor that generates a common signal to be input to a common electrode of the TFT liquid crystal panel. The processor generates the common signal so as to have a waveform that differs between when the light source is not lit and when the light source is lit.

Electronic device, electronic timepiece, display control method, and storage medium

A liquid crystal control circuit is provided for driving a MIP liquid crystal panel. The MIP liquid crystal panel has a plurality of pixels, each of which includes a memory element and a display element. The memory element holds electric potential depending on an image signal. The display element is applied voltage depending on the electric potential which the memory element holds. The liquid crystal control circuit includes an inversion unit that inverts polarity of AC voltage in a first mode in which an enable signal is output. The AC voltage being is applied to the display element in synchronization with outputting of the enable signal. The enable signal activates the image signal output to the MIP liquid crystal panel.

There is provided an illumination device including: a light guide plate in which a light diffusion pattern of diffusing incident light is formed to have density that is coarse on one side and gets denser toward the other side; a first light source which is provided on a side corresponding to the one side of the light diffusion pattern in the light guide plate; and a second light source which is provided on a side corresponding to the other side of the light diffusion pattern in the light guide plate.

Illumination device, display apparatus, and timepiece

An electronic timepiece includes a display section which displays time information and a light emitting section which illuminates a display surface of the display section by emitting light. A light emitting control section performs control to turn on the light emitting section by gradually increasing a light emitting amount of the light emitting section to a peak value in a predetermined brightening time according to a predetermined light emitting condition.

Electronic timepiece including light emitting section

A radio wave timepiece includes: a display unit, a display drive unit, a receiver unit and a control unit. The display unit displays a current time in a digital manner. The display drive unit drives the display unit by a drive signal of a predetermined drive waveform frequency. The receiver unit is capable of receiving radio waves of a plurality of different frequencies including time information. The control unit sets the drive waveform frequency during the reception of a radio wave by the receiver unit so that harmonic frequencies with respect to the drive waveform frequencies can be different from a receiving frequency of the radio wave.

Radio wave timepiece

The invention relates to a plate-like electronic member, e.g., an electro luminescence element or the like, and an electronic device. In the electronic member (,) of the invention, first and second electrodes are formed on respective surface of a plate-like electronic member body a first electrode connecting portion is formed on the first electrode, and, a second electrode connecting portion which is electrically connected with the second electrode is formed on a same side of the first electrode as the first electrode connecting portion with an insulating layer disposed between the second electrode connecting portion and the first electrode. The electronic device according to the invention comprises the electronic member (,) and an apparatus case (,) having the electronic member built-in.

Growing community of inventors

Tama, Japan

Eiji Yamakawa