Abstract: To display an image and the back side image in an overlapped state on a screen, with good visibility and see-through capability. The screen scanned with an image light from the projector has an optical layer and a plurality of control electrodes which are arranged side by side along the optical layer. The synchronous controller applies a voltage to the plurality of control electrodes, and, in a scanning period T of the image light, switches the optical state of the screen by the unit of the segmented region, between the visual state and the nonvisual state. The synchronous controller, in the period T, switches the optical state of a plurality of segmented regions 22 in synchronous with the scanning period of the image light, maintains the optical state of a projected region of the screen in the visual state by a voltage with two or more amplitudes.

Abstract: A display device having a simple circuit configuration and capable of lowering power consumption, and a drive method for the display device are provided. Rectangular wave voltage which changes between positive voltage V11 and 0 volt in cycle which is two times of cycle during which an optical state of an optical layer is changed is applied to an opposite electrode of a screen in a reverse mode. Pulse voltage which becomes a potential difference between electrodes of which optical state is changed when the optical state of the optical layer is changed is applied to a control electrode in a superimposed manner on rectangular wave voltage which changes between positive voltage V12 and 0 volt, which has the same cycle and the same phase as the rectangular wave voltage applied to the opposite electrode and which has the same value as V11.

Abstract: A method for estimating a lifetime of an organic EL element comprising a pair of electrodes and an organic layer, comprises: a step of acquiring degradation data of characteristics of the element when a current density applied to the element and/or an atmosphere temperature of the element are/is changed; a step of calculating a fitting function of the degradation data and extracting a degradation parameter characterizing a degradation in the characteristics at the applied current density and/or the atmosphere temperature from the fitting function; a step of calculating a temperature dependence of the degradation parameter based on a temperature rise value of the organic layer upon light emission at the applied current density and/or the atmosphere temperature and setting a lifetime estimation formula of the element; and a step of estimating the lifetime of the organic EL element based on the lifetime estimation formula.

Abstract: To reduce the image quality degradation, which emerges when an image light is projected on a screen which is controlled its optical state by the unit of the segmented regions. A display apparatus 1 includes: a screen 1 having an optical layer 25 and control electrodes 27 arranged on the optical layer 25 to be spaced from each other; a projector 11 projecting an image light to the screen 21; and a synchronous controller 31 that controls application of voltages to the control electrodes 27 to switch the optical state of each of the segmented regions from a nonvisual state to a visual state. The control electrode 31 applies the voltages with the same polarity to two control electrodes 27 arranged next to one another, when the gap region 28 of the space is irradiated with the image light.

Abstract: A display device having a simple circuit configuration and capable of lowering power consumption, and a drive method for the display device are provided. Rectangular wave voltage which changes between positive voltage V11 and 0 volt in cycle which is two times of cycle during which an optical state of an optical layer is changed is applied to an opposite electrode of a screen in a reverse mode. Pulse voltage which becomes a potential difference between electrodes of which optical state is changed when the optical state of the optical layer is changed is applied to a control electrode in a superimposed manner on rectangular wave voltage which changes between positive voltage V12 and 0 volt, which has the same cycle and the same phase as the rectangular wave voltage applied to the opposite electrode and which has the same value as V11.

Abstract: To display an image and the back side image in an overlapped state on a screen, with good visibility and see-through capability. The screen scanned with an image light from the projector has an optical layer and a plurality of control electrodes which are arranged side by side along the optical layer. The synchronous controller applies a voltage to the plurality of control electrodes, and, in a scanning period T of the image light, switches the optical state of the screen by the unit of the segmented region, between the visual state and the nonvisual state. The synchronous controller, in the period T, switches the optical state of a plurality of segmented regions 22 in synchronous with the scanning period of the image light, maintains the optical state of a projected region of the screen in the visual state by a voltage with two or more amplitudes.

Abstract: A light-emitting element and a display device having a resonator structure which has a small luminance fluctuation, even if a film thickness is deviated from a designed value, thereby resulting in a variation in resonator optical path length. There are included: a first reflective member; a second reflective member; and a light-emitting layer provided therebetween, and there is provided a resonator structure that transmits part of light by the first reflective member or the second reflective member, the light being resonated between the first reflective member and the second reflective member. The resonator structure has at least two or more resonance spectral peaks at respective wavelengths in a visible light range with a wavelength of a maximum value relative luminosity being a border line and an emission output spectrum has at least two or more peaks at respective wavelengths based on the resonance spectral peaks.

Abstract: A Liquid Crystal Display (LCD), a backlight used for the LCD and a method for producing the LCD and the backlight are provided which are capable of inhibiting an increase in component counts and in assembling processes and of reducing them, thereby achieving low costs. A display image is obtained by arranging a backlight section being able to perform scanning as a single unit in a manner that it positionally matches a liquid crystal displaying section. The backlight section is provided with a plurality of scanning electrodes and light emitting layers each providing a different luminescent color, and being spatially separated from each other on a principal face of the backlight and scanning is performed on a plurality of light emitting layers providing a different luminescent color.

Abstract: A Liquid Crystal Display (LCD), a backlight used for the LCD and a method for producing the LCD and the backlight are provided which are capable of inhibiting an increase in component counts and in assembling processes and of reducing them, thereby achieving low costs. A display image is obtained by arranging a backlight section being able to perform scanning as a single unit in a manner that it positionally matches a liquid crystal displaying section. The backlight section is provided with a plurality of scanning electrodes and light emitting layers each providing a different luminescent color, and being spatially separated from each other on a principal face of the backlight and scanning is performed on a plurality of light emitting layers providing a different luminescent color.

Abstract: A Liquid Crystal Display (LCD), a backlight used for the LCD and a method for producing the LCD and the backlight are provided which are capable of inhibiting an increase in component counts and in assembling processes and of reducing them, thereby achieving low costs. A display image is obtained by arranging a backlight section being able to perform scanning as a single unit in a manner that it positionally matches a liquid crystal displaying section. The backlight section is provided with a plurality of scanning electrodes and light emitting layers each providing a different luminescent color, and being spatially separated from each other on a principal face of the backlight and scanning is performed on a plurality of light emitting layers providing a different luminescent color.

Abstract: A light emitting element includes a resonator structure which has a first reflecting member, a second reflecting member, and a light emission layer placed between the first reflecting member and the second reflecting member, and part of light resonated between the first reflecting member and the second reflecting member is transmitted through the first reflecting member or the second reflecting member in the resonator structure. A wavelength at which a resonator output spectrum from the resonator structure has a maximum value is located between a wavelength at which an inner light emission spectrum of the light emission layer has a maximum value and a wavelength at which relative luminous efficiency has a maximum value.

Abstract: A light emitting element includes a resonator structure which has a first reflecting member, a second reflecting member, and a light emission layer placed between the first reflecting member and the second reflecting member, part of light resonated between the first reflecting member and the second reflecting member being transmitted through the first reflecting member or the second reflecting member in the resonator structure, and a band absorption filter transmitting the part of the light transmitted through the first reflecting member or the second reflecting member, wherein a wavelength at which the transmission of the band absorption filter has a minimum value is located between a wavelength at which a resonator output spectrum from the resonator structure has a maximum value and a wavelength at which relative luminous efficiency has a maximum value.

Abstract: A light emitting element includes a resonator structure which has a first reflecting member, a second reflecting member, and a light emission layer placed between the first reflecting member and the second reflecting member, and part of light resonated between the first reflecting member and the second reflecting member is transmitted through the first reflecting member or the second reflecting member in the resonator structure. A wavelength at which a resonator output spectrum from the resonator structure has a maximum value is located between a wavelength at which an inner light emission spectrum of the light emission layer has a maximum value and a wavelength at which relative luminous efficiency has a maximum value.

Abstract: A display device capable of suppressing a reduction in color purity includes: a first resonator structure having an upper reflective member, a lower reflective member, and a light-emitting functional layer therebetween, the light-emitting functional layer including a red light-emitting layer which emits red light; a second resonator structure having an upper reflective member, a lower reflective member, and a light-emitting functional layer provided therebetween, the light-emitting functional layer including a blue light-emitting layer which emits blue light; and a third resonator structure having an part reflective member, a lower reflective member, and a light-emitting functional layer provided therebetween, the light-emitting functional layer including a green light-emitting layer which emits green light, wherein the red light-emitting layer is a common layer provided in each of the light-emitting functional layers of the first to third resonator structures.

Abstract: A light-emitting element and a display device having a resonator structure which has a small luminance fluctuation, even if a film thickness is deviated from a designed value, thereby resulting in a variation in resonator optical path length. There are included: a first reflective member; a second reflective member; and a light-emitting layer provided therebetween, and there is provided a resonator structure that transmits part of light by the first reflective member or the second reflective member, the light being resonated between the first reflective member and the second reflective member. The resonator structure has at least two or more resonance spectral peaks at respective wavelengths in a visible light range with a wavelength of a maximum value relative luminosity being a border line and an emission output spectrum has at least two or more peaks at respective wavelengths based on the resonance spectral peaks.

Abstract: A light emitting element includes a resonator structure which has a first reflecting member, a second reflecting member, and a light emission layer placed between the first reflecting member and the second reflecting member, part of light resonated between the first reflecting member and the second reflecting member being transmitted through the first reflecting member or the second reflecting member in the resonator structure, and a band absorption filter transmitting the part of the light transmitted through the first reflecting member or the second reflecting member, wherein a wavelength at which the transmission of the band absorption filter has a minimum value is located between a wavelength at which a resonator output spectrum from the resonator structure has a maximum value and a wavelength at which relative luminous efficiency has a maximum value.

Abstract: A light emitting element includes a resonator structure which has a first reflecting member, a second reflecting member, and a light emission layer placed between the first reflecting member and the second reflecting member, and part of light resonated between the first reflecting member and the second reflecting member is transmitted through the first reflecting member or the second reflecting member in the resonator structure. A wavelength at which a resonator output spectrum from the resonator structure has a maximum value is located between a wavelength at which an inner light emission spectrum of the light emission layer has a maximum value and a wavelength at which relative luminous efficiency has a maximum value.

Abstract: A PDP comprises: front and back glass substrates facing each other across a discharge space; a plurality of row electrode pairs and column electrodes disposed between the front and back glass substrates and extending in directions at right angles to each other to form discharge cells in positions corresponding to the intersections in the discharge space; and an electride compound in which electrons are substituted for part of anions in the crystal lattice and which is disposed in an area facing the discharge cells and exposed to each discharge cell.

Abstract: A Liquid Crystal Display (LCD), a backlight used for the LCD and a method for producing the LCD and the backlight are provided which are capable of inhibiting an increase in component counts and in assembling processes and of reducing them, thereby achieving low costs. A display image is obtained by arranging a backlight section being able to perform scanning as a single unit in a manner that it positionally matches a liquid crystal displaying section. The backlight section is provided with a plurality of scanning electrodes and light emitting layers each providing a different luminescent color, and being spatially separated from each other on a principal face of the backlight and scanning is performed on a plurality of light emitting layers providing a different luminescent color.

Abstract: A Liquid Crystal Display (LCD), a backlight used for the LCD and a method for producing the LCD and the backlight are provided which are capable of inhibiting an increase in component counts and in assembling processes and of reducing them, thereby achieving low costs. A display image is obtained by arranging a backlight section being able to perform scanning as a single unit in a manner that it positionally matches a liquid crystal displaying section. The backlight section is provided with a plurality of scanning electrodes and light emitting layers each providing a different luminescent color, and being spatially separated from each other on a principal face of the backlight and scanning is performed on a plurality of light emitting layers providing a different luminescent color.