A digital display device including, from top to bottom, a first red filter, a transflective liquid crystal display cell, a second red filter and an emissive display cell, the transflective liquid crystal display cell displaying information using at least one first seven-segment digit and the emissive display cell providing a plurality of juxtaposed light points which are arranged so as to provide a display formed by at least one second seven-segment digit.

A digital display device including, from top to bottom, a first red filter, a transflective liquid crystal display cell, a second red filter and an emissive display cell, the transflective liquid crystal display cell displaying information using at least one first seven-segment digit and the emissive display cell providing a plurality of juxtaposed light points which are arranged so as to provide a display formed by at least one second seven-segment digit.

An object includes an electro-optic display device provided with an optically active element having optical properties that can be modified by applying an electric voltage. The object further includes a frame which delimits an opening wherein the electro-optic display device is arranged. The object also includes an external electronic power and control device and elements for the electrical connection of the electro-optic display device to the external electronic power and control device, which are hidden by the frame of the object. The electro-optic display device defines an opaque active display area having a surface area that is less than the surface area of the opening, such that, even when the electro-optic display device is activated and displaying information, a transparent area remains between the active display area and the edges of the frame, whereas an area located beneath the active display area is hidden.

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.

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.

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.

A clock adapted to be supported by a wall or table includes a central clock face, formed by an LCD screen or the like and controlled electronically to display images. The screen is e controlled by a processing unit receiving signals from a remote device to provide information displaying on the screen the time of day in a format selected by the user as well as information selected by the user to be displayed on the screen. The processing unit contains information to display any of several images to serve as background for the clock face and the processing unit may further be able to receive signals from the remote device to provide information for displaying further images to serve as background for the clock face.

A clock adapted to be supported by a wall or table includes a central clock face, formed by an LCD screen or the like and controlled electronically to display images. The screen is e controlled by a processing unit receiving signals from a remote device to provide information displaying on the screen the time of day in a format selected by the user as well as information selected by the user to be displayed on the screen. The processing unit contains information to display any of several images to serve as background for the clock face and the processing unit may further be able to receive signals from the remote device to provide information for displaying further images to serve as background for the clock face.

An electronic display device includes measurement sensors that measure respective items, a digital display that displays the items, and a processor. The processor determines a main image related to a measurement of at least one of the items and updates a screen at first timing. Upon displaying the main image related to a measurement of an item other than the first item on the digital display, the processor determines that a sub image is related to measurement of the first item, synchronizes the first timing with update timing that is related to the main image, and simultaneously updates the main image and the sub image.

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.