Abstract: Provided is a display device serving as a see-through display which is capable of ensuring the clarity of a displayed image while maintaining high transparency and is less likely to be limited in terms of the location of installation. A dot-printed light-emitting area of a light guiding plate (60) emits, as backlight, light whose intensity is so high that the intensity of ambient light can be negligible, and therefore, the observer on the front side of a liquid crystal display device (10) is able to see a clear image displayed in an image display area (75) of a liquid crystal panel (20). Moreover, ambient light is transmitted through a light-transmissive area (72) of the light guiding plate (60) to be incident on a transparent display area of the liquid crystal panel (20), and therefore, the observer can see a background displayed with high transparency in the transparent display area (76).

Abstract: Provided is a display device serving as a see-through display which is capable of ensuring the clarity of a displayed image while maintaining high transparency and is less likely to be limited in terms of the location of installation. A dot-printed light-emitting area of a light guiding plate (60) emits, as backlight, light whose intensity is so high that the intensity of ambient light can be negligible, and therefore, the observer on the front side of a liquid crystal display device (10) is able to see a clear image displayed in an image display area (75) of a liquid crystal panel (20). Moreover, ambient light is transmitted through a light-transmissive area (72) of the light guiding plate (60) to be incident on a transparent display area of the liquid crystal panel (20), and therefore, the observer can see a background displayed with high transparency in the transparent display area (76).

Abstract: Provided is a double display capable of displaying an image with a depth sensation, a three-dimensional sensation, and the like while securing sufficient transmittance of a panel on a front face side, without employing high speed drive such as a field sequential system. In an image display device that is provided with a first liquid crystal display unit (101) disposed on a front face side and including a first liquid crystal panel (11), a second liquid crystal display unit (102) disposed on a rear face side and including a second liquid crystal panel (12), and a backlight light source (30) disposed on the rear face side relative to the second liquid crystal display unit (102), a plurality of kinds of images (two kinds of images in general) are displayed in the second liquid crystal panel (12), and in the first liquid crystal panel (11), an image to be displayed is selected from the plurality of kinds of images on a pixel-by-pixel basis.

Abstract: A display device that can display an image and make a background visible even when the image represented by a display gradation value and a transparency gradation value included in an image information signal is not within a displayable range is provided. Even when the image specified by the display gradation value and the transparency gradation value included in the image information signal is not within the displayable range, the display gradation value and the transparency gradation value can be adjusted by prioritizing the transparency gradation value or prioritizing the display gradation value. In this way, the display device can display the image, make the background transparent, and display the image and the background overlapping each other regardless of whether the image specified by the display gradation value and the transparency gradation value is within the displayable range.

Abstract: Provided is an image display device equipped with a see-through display function allowing the background to be seen through. In a liquid crystal display device (100), a transparent plate (170) is attached such that the incidence angle of source light emitted by a backlight source (160) is Brewster's angle ?b, and therefore, the transparent plate (170) reflects S-wave included in the source light, and allows P-wave included in ambient light incident from the back side to be transmitted therethrough and illuminate a liquid crystal panel (150). Thus, when the backlight source (160) is on, the viewer can see an image displayed on the background, whereas when the backlight source (160) is off, only the background can be seen.

Abstract: Provided is a display device allowing a background to be seen through a display with appropriate brightness on the back side of the display. An auxiliary light source driver circuit is controlled so as to adjust the brightness of auxiliary light, such that on the back side of the display, the sum of the brightness of source light transmitted through a light guide to the back side and the brightness of auxiliary light, where the backlight source is on, is equal to the brightness of auxiliary light where the backlight source is off. As a result, the difference in brightness on the back side depending on whether the backlight source (80) is on or off further decreases, whereby background display quality is further inhibited from changing.

Abstract: In an image display device including a first display panel and a second display panel, there are provided a first panel body, a first panel body emission-side polarizing plate disposed at a front-surface side with respect to the first panel body, a second panel body, a second panel body incidence-side polarizing plate disposed at a back-surface side with respect to the second panel body, at least one inter-panel polarizing plate disposed between the first panel body and the second panel body, and a back-surface irradiation light source configured to emit light toward the back-surface side. The back-surface irradiation light source is provided in one of regions between the first panel body emission-side polarizing plate and the second panel body incidence-side polarizing plate.

Abstract: Provided is a display device that can be realized with a simple configuration and functions as a transparent display allowing background to be clearly seen therethrough. When a liquid crystal panel (30) is in an ON state, polarized backlight that is incident from a polarized backlight unit (50) reaches a front surface. At this point, ambient light that is incident from a rear side also reaches the front surface. Accordingly, an observer who is on a front side of a transparent display (100) can visually recognize an image that is displayed in an overlaid manner on the background seen through the transparent display (100). In a case where the liquid crystal panel (30) is placed into an OFF state, the polarized backlight cannot reach the front surface of the transparent display (100), and the ambient light reaches the front surface.

Abstract: There is provided an image display device that includes a display in which a background is transparently seen from a front surface side, and has a high degree of freedom at the time of installation. A liquid crystal panel (32) for adjusting transparency/light-emission adjusts, for each pixel, a ratio between transmitted light-source light and ambient light by respectively controlling a polarization direction of a reflected polarization component of the light-source light irradiated to a reflection-type polarization plate (20) from a light guide plate (180) and a polarization direction of a transmitted polarization component of the ambient light incident to the reflection-type polarization plate (20) from a rear surface side of the display, based on transparent/light-emitting pixel information.

Abstract: In an image display device including a first display panel and a second display panel, there are provided a first panel body, a first panel body emission-side polarizing plate disposed at a front-surface side with respect to the first panel body, a second panel body, a second panel body incidence-side polarizing plate disposed at a back-surface side with respect to the second panel body, at least one inter-panel polarizing plate disposed between the first panel body and the second panel body, and a back-surface irradiation light source configured to emit light toward the back-surface side. The back-surface irradiation light source is provided in one of regions between the first panel body emission-side polarizing plate and the second panel body incidence-side polarizing plate.

Abstract: Provided is an image display device equipped with a see-through display function allowing the background to be seen through. In a liquid crystal display device (100), a transparent plate (170) is attached such that the incidence angle of source light emitted by a backlight source (160) is Brewster's angle ?b, and therefore, the transparent plate (170) reflects S-wave included in the source light, and allows P-wave included in ambient light incident from the back side to be transmitted therethrough and illuminate a liquid crystal panel (150). Thus, when the backlight source (160) is on, the viewer can see an image displayed on the background, whereas when the backlight source (160) is off, only the background can be seen.

Abstract: In a see-through image display device, a first reflective polarizing plate and a second reflective polarizing plate are arranged with a light guiding plate positioned therebetween. Therefore, p-polarized light emitted by the light guiding plate toward the display screen side is reutilized by the first reflective polarizing plate causing the light to return to the light guiding plate, and further, p-polarized light emitted toward the back side is reutilized as well by the second reflective polarizing plate causing the light to return to the light guiding plate. In this manner, the light emitted by the light guiding plate toward the back side is also reused.

Abstract: There is provided an image display device that includes a display in which a background is transparently seen from a front surface side, and has a high degree of freedom at the time of installation. A liquid crystal panel (32) for adjusting transparency/light-emission adjusts, for each pixel, a ratio between transmitted light-source light and ambient light by respectively controlling a polarization direction of a reflected polarization component of the light-source light irradiated to a reflection-type polarization plate (20) from a light guide plate (180) and a polarization direction of a transmitted polarization component of the ambient light incident to the reflection-type polarization plate (20) from a rear surface side of the display, based on transparent/light-emitting pixel information.

Abstract: A display unit (120) displays a captured image taken by an imaging unit (110). A detection unit (130) detects an operation performed on a screen of the display unit (120). When the operation detected by the detection unit (130) is a predetermined operation, a control unit (140) causes the display unit (120) to continue displaying a captured image taken at a predetermined timing, selected from among the captured images.