Seiko Epson Corporation

Kenichi Okuhara

Akihiko Maruyama

Nobuhiro Koike

Hidehiro Akahane

Shigeaki Seki

Imao Hiraga

Shigeyuki Fujimori

Takashi Miyazaki

Hidenori Makiba

Hiroshi Shingu

Yoichi Hayashi

Kiminori Kanamori

A display device that has a display panel having a front substrate, an image forming unit, and a back substrate rendered together in layers, and a wiring board layered on the back surface of the back substrate. A plurality of input/output pins are formed on the front surface of the back substrate, and a plurality of connection pins that are electrically connected to the input/output pins by respective conductor members are formed on the back surface of the wiring board.

Display device and timepiece comprising a wiring board layered on a back surface of a back substrate

Display device and timepiece

To provide a display device for a timepiece wherein model changes can be easily made with a simple structure in a timepiece with a retro display. In a day display device, an hour wheel, day intermediate wheel, and cam are disposed on the same axis, and a lever and small day indicator are disposed so as to enclose these components, whereby a simple configuration can be achieved. A large space for accommodating the lever can be provided between the substantial center and the peripheral edge of a main plate on which the hour wheel, day intermediate wheel, and cam rotate on the same axis, and various shapes are made possible by freely extending the lever from the substantial middle to the peripheral edge of the main plate. Therefore, it is possible to form first through third gear parts through, and to provide three positions A through C for incorporating the small day indicator. This has merits in that timepieces of different models can thereby be easily manufactured merely by changing the position for incorporating the small day indicator, and there is no need to change the configuration of the movement when the model is changed.

Display device for timepiece, movement, and timepiece

A timepiece display apparatus causes a day hand to move reciprocally by means of center wheel, driven day wheel, cam, lever, and rack. These wheels, cam, lever, and rack can be easily arranged to fit the available space on the main plate of the movement, and the construction of the display apparatus can thus be simplified. Furthermore, locating the cam between the rotary shaft and rack of the lever portion enables arranging a plurality of parts more compactly than if the cam is disposed to a different location, and affords a simple assembly.

Timepiece display apparatus, movement, and timepiece

A mechanism having at least a function of measuring an arbitrary elapsed time is provided, which disables the function from being reset after the function is started, and enables the function to be reset after the function is stopped. The function is continuously held in an electrical ON state after being started, except when being normally stopped. This provides a time measurement device and method in which an electrical operating state and a mechanical operating state can coincide.

Time measurement device and method

A time measurement device includes a first motor ( ) for indicating standard time, a second motor ( ) for indicating a chronograph, a generator ( ) which generates driving power for driving the first and second motors by converting mechanical energy into electrical energy, and a zero reset mechanism ( ) for mechanically resetting the chronograph to zero. A compact time measurement device, operable from a low power, is thus provided.

Time measurement device

In a time measurement device ( ) having, at least, both a function of measuring standard time and a function of measuring any elapsed time, when a predetermined amount of time passes from a temporary suspension of a watch hand in position in the middle of the measurement of the elapsed time, the suspension of the watch hand is automatically released and the watch hand is driven to a watch hand position indicating the elapsed time. Provided thereby is the time measurement device which automatically releases the temporary suspension state in time measurement after the predetermined amount of time, thereby shortening the temporary suspension time and reducing power consumed to drive the watch hand to an originally expected watch hand position at the release of the temporary suspension.

Time measurement device and time measurement method

This invention relates to a two-layer display type of electronic equipment having a liquid crystal panel (,) and a background display portion (,) on a rear surface side thereof. The liquid crystal panel (,) has a main liquid crystal panel unit (,) formed by inserting a liquid crystal layer (,) between a first substrate (,) and a second substrate (,). The liquid crystal layer (,) is set to either a light-transmitting state or a light-scattering state by an electrical field that is applied to the liquid crystal. This liquid crystal panel (,) has a transparent layer (,) on the rear surface of the second substrate (,). If the refractive index of this transparent layer (,) is n,, the refractive index of the second substrate (,) in contact with the front side of this transparent layer is n,, and the refractive index of the air layer in contact with the rear side of the transparent layer (,) is n,, the following relationship is established: n,<n,<n,.

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Nagano-ken, Japan

Kenichi Okuhara