Abstract: An illuminating device includes a plurality of light sources, a light guide plate that has plate surfaces on front and rear sides and a plurality of end faces formed around the plate surfaces, receives light emitted from the plurality of light sources through a light incident surface, which is at least one end face among the plurality of end faces, and emits the light through a light-emitting surface, which is one of the plate surfaces, a plurality of photodetectors that are disposed to face the end faces or the plate surfaces of the light guide plate, and a light source control unit that controls light emission of the plurality of light sources on the basis of the output of the plurality of photodetectors. The plurality of photodetectors include at least two photodetectors including light receiving surfaces that face the end faces or the plate surfaces in different directions from each other.

Abstract: An illuminating device includes a plurality of light sources, a light guide plate that has plate surfaces on front and rear sides and a plurality of end faces formed around the plate surfaces, receives light emitted from the plurality of light sources through a light incident surface, which is at least one end face among the plurality of end faces, and emits the light through a light-emitting surface, which is one of the plate surfaces, a plurality of photodetectors that are disposed to face the end faces or the plate surfaces of the light guide plate, and a light source control unit that controls light emission of the plurality of light sources on the basis of the output of the plurality of photodetectors. The plurality of photodetectors include at least two photodetectors including light receiving surfaces that face the end faces or the plate surfaces in different directions from each other.

Abstract: A display device is provided which offers double-sided display and achieves a thin structure and also which prevents deterioration in display quality of each of front and back display units when an illumination unit such as a backlight is shared by these display units. The display device includes a first display unit having a display surface on the front surface thereof; a second display unit having a display surface on the rear surface thereof; and a common illumination unit interposed between the first display unit and the second display unit, for illuminating both the first display unit and the second display unit with light. The illumination unit includes a light-guiding member having a first light-emitting surface opposed to the first display unit and a second light-emitting surface opposed to the second display unit, and a transflector is interposed between the second light-emitting surface of the light-guiding member and the second display unit.

Abstract: An illuminating device includes a plurality of light sources, a light guide plate that has plate surfaces on front and rear sides and a plurality of end faces formed around the plate surfaces, receives light emitted from the plurality of light sources through a light incident surface, which is at least one end face among the plurality of end faces, and emits the light through a light-emitting surface, which is one of the plate surfaces, a plurality of photodetectors that are disposed to face the end faces or the plate surfaces of the light guide plate, and a light source control unit that controls light emission of the plurality of light sources on the basis of the output of the plurality of photodetectors. The plurality of photodetectors include at least two photodetectors including light receiving surfaces that face the end faces or the plate surfaces in different directions from each other.

Abstract: A side-lighting type surface light source device 100 includes a light source 40, a reflector member 50, a light guide plate member 30, and a fixing member 10. The reflector member 50 reflects a light ray from the light source, and includes opposed first end portion 520c and second end portion 520a, wherein the first end portion is arranged to project out of the second end portion. The fixing member 10 includes a fixing body 12 having a support surface (a back portion 12a) and a reflector holder 14 for holding the reflector member. The reflector member supports the reflective sheet 20 and the light guide plate member 30 with the first end portion thereof.

Abstract: A display device is provided which offers double-sided display and achieves a thin structure and also which prevents deterioration in display quality of each of front and back display units when an illumination unit such as a backlight is shared by these display units. The display device includes a first display unit having a display surface on the front surface thereof; a second display unit having a display surface on the rear surface thereof; and a common illumination unit interposed between the first display unit and the second display unit, for illuminating both the first display unit and the second display unit with light. A transflector is interposed between the second light-emitting surface of the light-guiding member and the second display unit.

Abstract: An electro-optical device includes: an electro-optical panel that includes a plurality of pixels each of which is equipped with a light transmissive region are arranged along a plane, the light transmissive regions being formed with a first arrangement period in a first direction in the plane, and being formed with a second arrangement period, which is larger than the first arrangement period, in a second direction in the plane that is orthogonal to the first direction; a backlight that illuminates a light beam to the electro-optical panel; a first condensing layer that is disposed between the electro-optical panel and the backlight and has a first optical structural period substantially along the first direction; and a second condensing layer that is disposed between the electro-optical panel and the first condensing layer and has a second optical structural period substantially along the second direction.

Abstract: An illumination device is provided to solve locally high luminance near point-shaped light sources, while preventing overall decrease in luminance at the light-emitting face of a light guide member. The illumination device includes a light source for generating light, and a light guide member which receives light from the light source at a light input face and emits light from a light emitting face. A continuous optical pattern with prism faces and flat faces is provided on the light input face. Light emitted from the light source is diffused in the plane direction by the optical pattern, so there is no occurrence of locally-high-luminance areas near the LEDs in the light guide member. Moreover, the luminance of the light emitted in a planar manner from the light-emitting face does not decrease.

Abstract: An electro-optical device with a sound generating body is disclosed, in which an electro-optical device and a sound generating body can be mounted compactly and which can eliminate necessity of acoustic design of the sound generating body for an enclosure of an electronic apparatus for accommodating the electro-optical device. The electro-optical device of the present invention includes a first frame, a second frame opposed to the first frame, a third frame interposed between the first frame and the second frame, an electro-optical panel supported by the first frame, and a sound generating body supported by the second frame and covered by the second frame and the third frame, the sound generating body being arranged so as to be two-dimensionally overlapped the electro-optical panel.

Abstract: A liquid crystal 1 includes a pair of substrates 7a and 7b which hold a liquid crystal L therebetween, a light guide 4 provided opposite to one of the substrates, a FPC 3a connected to one of the substrates 7a and 7b, and a LED 21 provided opposite to a light receiving surface 4a of the light guide 4. The LED 21 is mounted on the FPC 3a and arranged opposite to the light receiving surface 4a of the light guide 4. The LED 21 is preferably positioned relative to the light guide 4 by engagement between the pines provided on the LED 21 and the recesses 31 provided on the light guide 4.

Abstract: A light source device 41A, 41B or 41C comprising a lens 44A, 44B or 44C which receives light from a light emitting device 43 such as LED. The lens 44A is a lens having the property that the directivity of exiting light in the Y direction is higher than the directivity in the X direction perpendicular to the Y direction. Namely, the light emitted from the light emitting device 43 is condensed in a narrow angular range in the Y direction, and is scattered in a wide angular range in the X direction. When the light source device 41A is used as a light source of an illumination device of a liquid crystal device, the height direction of a light guide in which the dimension is small coincides with the Y direction, and the width direction of the light guide in which the dimension is large coincides with the X direction.

Abstract: A liquid crystal device 1 has light sources 22 such as LED's disposed so as to face a side surface of a substrate 7b, and also has a light guiding film 4 and a light-source reflective layer 41 disposed so as to face the outer surface of the substrate 7b, in that order, whereby light can be supplied into a liquid crystal panel 2 without a thick light guiding plate. The light guiding film has a plurality of slanted surfaces 4c for reflecting light from the light sources 22 to the substrate 7b.

Abstract: A display device is provided which offers double-sided display and achieves a thin structure and also which prevents deterioration in display quality of each of front and back display units when an illumination unit such as a backlight is shared by these display units. The display device includes a first display unit having a display surface on the front surface thereof; a second display unit having a display surface on the rear surface thereof; and a common illumination unit interposed between the first display unit and the second display unit, for illuminating both the first display unit and the second display unit with light. The illumination unit includes a light-guiding member having a first light-emitting surface opposed to the first display unit and a second light-emitting surface opposed to the second display unit, and a transflector is interposed between the second light-emitting surface of the light-guiding member and the second display unit.

Abstract: An illumination device 4 includes a light guide 6 which receives light from a light source 7 at a light-receiving face 6a and emits the light from a light-emitting face 6b. A face 6c opposite the light-receiving face 6a of the light guide 6 is formed as an inclined plane. The light which has reached the inclined plane 6c reflects at an angle off the inclined plane 6c. Therefore, the frequency in diffusion of the light increases. As a result, the luminance of the light emitted from the light-emitting face 6b is improved. The luminance of a planar light can be made uniform by varying the shapes of diffusion patterns 12 disposed on a diffusion sheet 9 according to the distance from the inclined plane 6c.

Abstract: An illumination device is provided to solve locally high luminance near point-shaped light sources, while preventing overall decrease in luminance at the light-emitting face of a light guide member. The illumination device includes a light source for generating light, and a light guide member which receives light from the light source at a light input face and emits light from a light emitting face. A continuous optical pattern with prism faces and flat faces is provided on the light input face. Light emitted from the light source is diffused in the plane direction by the optical pattern, so there is no occurrence of locally-high-luminance areas near the LEDs in the light guide member. Moreover, the luminance of the light emitted in a planar manner from the light-emitting face does not decrease.

Abstract: A liquid crystal device 1 has light sources 22 such as LED's disposed so as to face a side surface of a substrate 7b, and also has a light guiding film 4 and a light-source reflective layer 41 disposed so as to face the outer surface of the substrate 7b, in that order, whereby light can be supplied into a liquid crystal panel 2 without a thick light guiding plate. The light guiding film has a plurality of slanted surfaces 4c for reflecting light from the light sources 22 to the substrate 7b.

Abstract: The present invention permits quick removal of charge stored in a liquid crystal layer, without depending upon characteristics of individual devices. This is achieved by providing a detector that detects the turning-off of a power supply, and a connection device that, upon detection of the turning-off of the power supply by the detector, connects to a predetermined line either or both of scanning lines to which scanning signals are supplied and data lines to which data signals are supplied, and connecting the predetermined line to a constant potential.

Abstract: The present invention permits quick removal of charge stored in a liquid crystal layer, without depending upon characteristics of individual devices. This is achieved by providing detecting means that detects the turning-off of a power supply, and connecting means that, upon detection of the turning-off of the power supply by the detecting means, connects to a predetermined line either or both of scanning lines to which scanning signals are supplied and data lines to which data signals are supplied, and connecting the predetermined line to a constant potential.

Abstract: An illumination device 4 includes a light guide 6 which receives light from a light source 7 at a light-receiving face 6a and emits the light from a light-emitting face 6b. A face 6c opposite the light-receiving face 6a of the light guide 6 is formed as an inclined plane. The light which has reached the inclined plane 6c reflects at an angle off the inclined plane 6c. Therefore, the frequency in diffusion of the light increases. As a result, the luminance of the light emitted from the light-emitting face 6b is improved. The luminance of a planar light can be made uniform by varying the shapes of diffusion patterns 12 disposed on a diffusion sheet 9 according to the distance from the inclined plane 6c.

Abstract: A light source device 41A, 41B or 41C comprising a lens 44A, 44B or 44C which receives light from a light emitting device 43 such as LED. The lens 44A is a lens having the property that the directivity of exiting light in the Y direction is higher than the directivity in the X direction perpendicular to the Y direction. Namely, the light emitted from the light emitting device 43 is condensed in a narrow angular range in the Y direction, and is scattered in a wide angular range in the X direction. When the light source device 41A is used as a light source of an illumination device of a liquid crystal device, the height direction of a light guide in which the dimension is small coincides with the Y direction, and the width direction of the light guide in which the dimension is large coincides with the X direction.