Abstract: A hologram optical member of the present disclosure includes a hologram layer, a substrate, and a hard coat layer. The substrate includes a resin material. The hard coat layer is disposed between the hologram layer and the substrate, includes an organic-based material, and has a hardness higher than that of the substrate.

Abstract: A display device according to an aspect of the disclosure includes a pixel circuits, a scanning signal line, a data signal line, a first power supply voltage line, a second power supply voltage line, a scanning signal line drive circuit, a data signal line drive circuit, and a display control unit. The display control unit compares data values written in pixels in an n-th row corresponding to the selected scanning signal line with data values written in pixels in an (n?1)-th row which is one row prior to the n-th row of the selected scanning signal line, and corrects the data voltage corresponding to the pixels in the n-th row in a case where a difference between the data values is equal to or greater than a threshold value.

Abstract: Convenience of an ink bottle and a bottle set is improved. An ink bottle includes: a container portion that contains ink; a guiding portion that is formed in one end portion of the container portion, and includes an outflow port from which the ink in the container portion flow out; and a cover that covers at least an end portion of the container portion on the opposite side of the guiding portion.

Abstract: In a display device that changes the number of light emissions per frame period, a display control circuit outputs a control signal specifying an emission period included in a frame period to an emission control line driver circuit. The emission control line driver circuit adds sequential delays to the control signal and thereby generates signals to be applied to the emission control lines. When leading and trailing frame periods have the same proportion of emission periods but include different numbers of emission periods, the leading and trailing frame periods are intervened by a transition frame period having a different proportion of emission periods from the leading frame period. This configuration prevents flickering caused by the changing of the number of light emissions per frame period.

Abstract: A display device includes: a display panel including a sensor unit configured to detect a touch operation; a first control unit configured to supply a first signal to the display panel; and a second control unit configured to calculate touch information related to the touch operation and to supply the touch information to the first control unit. The first control unit includes: a signal generator configured to generate the first signal based on an image signal supplied from an external image signal supply source; and an overdrive circuit configured to perform a process of increasing an amplitude of the first signal generated by the signal generator. The overdrive circuit is actuated based on the touch information from the second control unit. The first control unit, in response to the actuation of the overdrive circuit, supplies the first signal having the amplitude increased by the overdrive circuit to the display panel.

Abstract: A display device is provided with: a display portion including a plurality of scanning lines, a plurality of data lines, and a plurality of pixel circuits; a scanning line drive circuit; and a data line drive circuit. The level of a data voltage applied to the data line decreases when a frame frequency is switched higher, and increases when the frame frequency is switched lower. This can prevent a display flicker when the frame frequency is switched. The level of the data voltage may change when the frame frequency is switched, and may return to its initial level over a plurality of frame periods. The timing of the control signal used to drive the display portion may change in accordance with the frame frequency to cause the length of the charging period of the pixel circuit to change in accordance with the frame frequency.

Abstract: An electret includes an electret layer. The electret layer is formed by subjecting a composite film in which inorganic dielectric particles are dispersed and held in a base film to a polarization treatment. The inorganic dielectric particles are mainly composed of an inorganic dielectric material having a bandgap energy of 4 eV or more.

Abstract: An electret includes a substrate and an electret layer formed above a surface of the substrate. The electret layer is a composite metal compound containing two or more different metal elements, and is obtained by subjecting a thin film mainly composed of an inorganic dielectric material having a bandgap energy of 4 eV or more to a polarization treatment.

Abstract: In a display device that changes the number of light emissions per frame period, a display control circuit outputs a control signal specifying an emission period included in a frame period to an emission control line driver circuit. The emission control line driver circuit adds sequential delays to the control signal and thereby generates signals to be applied to the emission control lines. When leading and trailing frame periods have the same proportion of emission periods but include different numbers of emission periods, the leading and trailing frame periods are intervened by a transition frame period having a different proportion of emission periods from the leading frame period. This configuration prevents flickering caused by the changing of the number of light emissions per frame period.

Abstract: A touch panel display driver includes a source driver circuit, a touch detection circuit, a selector circuit, a register a plurality of source terminals, a plurality of touch detection terminals, and a plurality of selection terminals. The selector circuit electrically connects the source driver circuit to each of the source terminals, electrically connects the touch detection circuit to each of the touch detection terminals, and electrically connects each of the selection terminals to the source driver circuit or the touch detection circuit.

Abstract: A display device according to an aspect of the disclosure includes a pixel circuits, a scanning signal line, a data signal line, a first power supply voltage line, a second power supply voltage line, a scanning signal line drive circuit, a data signal line drive circuit, and a display control unit. The display control unit compares data values written in pixels in an n-th row corresponding to the selected scanning signal line with data values written in pixels in an (n-1)-th row which is one row prior to the n-th row of the selected scanning signal line, and corrects the data voltage corresponding to the pixels in the n-th row in a case where a difference between the data values is equal to or greater than a threshold value.

Abstract: A display device includes: a display panel including a sensor unit configured to detect a touch operation; a first control unit configured to supply a first signal to the display panel; and a second control unit configured to calculate touch information related to the touch operation and to supply the touch information to the first control unit. The first control unit includes: a signal generator configured to generate the first signal based on an image signal supplied from an external image signal supply source; and an overdrive circuit configured to perform a process of increasing an amplitude of the first signal generated by the signal generator. The overdrive circuit is actuated based on the touch information from the second control unit. The first control unit, in response to the actuation of the overdrive circuit, supplies the first signal having the amplitude increased by the overdrive circuit to the display panel.

Abstract: A display panel includes a second display region and a first display region arranged side by side in a direction in which data signal lines extend, and a source driver provided in a picture-frame region close to the second display region. The display panel further includes a switching signal line disposed between the second display region and the first display region, and a plurality of switches provided at intersecting portions of the data signal lines and the switching signal line. Each of the plurality of switches is connected at a control terminal thereof to the switching signal line, connected at a first conductive terminal thereof to a data signal line disposed in the first display region, and connected at a second conductive terminal thereof to a data signal line disposed in the second display region.

Abstract: A memory liquid crystal display including a liquid crystal panel with a built-in touch panel is provided with a state control circuit configured to switch a state of a pixel electrode between a floating state and a non-floating state. A pulse signal for touch detection is supplied to a common electrode in a touch detection period. The state control circuit changes the state of the pixel electrode from the non-floating state to the floating state before the start of the touch detection period, and changes the state of the pixel electrode from the floating state to the non-floating state after the end of the touch detection period.

Abstract: In a memory liquid crystal display including a liquid crystal panel with a built-in touch panel, a black voltage or a white voltage is provided to a pixel electrode in accordance with a value of binary data stored in a memory circuit, and a display voltage generation circuit changes voltage values of the black voltage and the white voltage in synchronization with a continuous pulse voltage for touch detection in a touch detection period so that an absolute value of a voltage between the pixel electrode and a common electrode is maintained at a constant magnitude in each pixel circuit throughout a period from a point in time immediately before the start of the touch detection period to a point in time immediately after the end of the touch detection period.

Abstract: In a memory liquid crystal display including a liquid crystal panel with a built-in touch panel, a black voltage or a white voltage is provided to a pixel electrode in accordance with a value of binary data stored in a memory circuit, and a display voltage generation circuit changes voltage values of the black voltage and the white voltage in synchronization with a continuous pulse voltage for touch detection in a touch detection period so that an absolute value of a voltage between the pixel electrode and a common electrode is maintained at a constant magnitude in each pixel circuit throughout a period from a point in time immediately before the start of the touch detection period to a point in time immediately after the end of the touch detection period.

Abstract: A memory liquid crystal display including a liquid crystal panel with a built-in touch panel is provided with a state control circuit configured to switch a state of a pixel electrode between a floating state and a non-floating state. A pulse signal for touch detection is supplied to a common electrode in a touch detection period. The state control circuit changes the state of the pixel electrode from the non-floating state to the floating state before the start of the touch detection period, and changes the state of the pixel electrode from the floating state to the non-floating state after the end of the touch detection period.

Abstract: A display panel includes a second display region (220) and a first display region (210) which are arranged side by side in a direction in which data signal lines extend, and a source driver (500) is provided in a picture-frame region close to the second display region (220). The display panel further includes a switching signal line (SWL) disposed between the second display region (220) and the first display region (210); and a plurality of switches (252) provided at intersecting portions of the plurality of data signal lines and the switching signal line (SWL). Each of the switches (252) is connected at its control terminal to the switching signal line (SWL), connected at its first conductive terminal to a data signal line disposed in the first display region (210), and connected at its second conductive terminal to a data signal line disposed in the second display region (220).

Abstract: The power consumption of an apparatus including a touch panel is reduced. In a touch panel control device (1) including a sensor drive section (22) and a liquid crystal drive controller (10), the sensor drive section (22) makes a detection sensitivity during a pause period lower than a detection sensitivity during an update period, the pause period being a period in which the liquid crystal drive controller (10) does not update the image that is displayed on a liquid crystal display panel (40), the update period being a period in which the liquid crystal drive controller (10) updates the image that is displayed on the liquid crystal display panel (40).

Abstract: A display apparatus includes a source driver and a gate driver which drive a display section such that pixel signals are selectively supplied to a plurality of pixels provided in the display section. The display section includes a non-image visual recognition area, in which it is not possible for a visual recognizer to visually recognize an image to be displayed, and an image visual recognition area in which it is possible for the visual recognizer to visually recognize the image to be displayed. The source driver and the gate driver lower a driving rate which drives the non-image visual recognition area further than a driving rate which drives the image visual recognition area.