Abstract:
The image display device includes a light source section having light emitting subsections; a display panel; and a display control section performing a control. An input frame image is decomposed into a plurality of field images and the field images are displayed in a field sequential manner. A differential image for each of the three primary-color components is obtained by subtracting a common luminance portion from the subsection-drive frame image. The differential image and a common image configured of the common luminance portion are sequentially outputted to the display panel in a time-divisional manner. In the first field period for outputting the differential image of a primary color component, corresponding primary color light is emitted, and in a second field period for outputting the common image, multiple kinds of primary color light, corresponding to the primary-color components configuring the common luminance portion, are emitted together.
Abstract:
A proposed backlight is suitable for a large size liquid crystal display. A backlight 2 for illuminating a liquid crystal panel 3 from the rear, is formed by combining a plurality of backlight units 10, 10, . . . . By providing a transparent acrylic board 4 between the backlight 2 and the liquid crystal panel 3, it becomes possible to prevent brightness unevenness from occurring at a junction section of the backlight units 10, 10, . . . , even when the backlight is formed by combining the plurality of the backlight units 10, 10, . . . .
Abstract:
The screen is exempt from variation in brightness due to uneven temperature distribution.The color liquid crystal display unit has a color display panel of transmissive type and a backlight unit placed behind the color display panel. The backlight unit has a plurality of LEDs connected in series, the drive unit to drive the LEDs in correspondence with the LEDs, and the temperature sensor to detect the temperature of LEDs. The groups of LEDs are arranged in regions where the display unit has the same temperature. The drive unit controls current to be supplied to LEDs in response to temperature detected by the temperature sensor so that the LEDs retain the constant brightness even when the LEDs fluctuate in temperature.
Abstract:
A color display unit is provided, which allows color display to be performed with high efficiency in utilizing light as compared with a prior type using all of RGB color filters. The color display unit includes a light source section having plural kinds of color LEDs, and includes a display section controlling transmissivity of light from the light source section in synchronization with light emission control by the light source section, to achieve desired color display. The display section has a full-color transmittable region and a partially transmittable region. The full-color transmittable region allows all color components of the light to be transmitted, while the partially transmittable region inhibits passage of one or more in the color components of the light. The display section controls the transmissivity of the light independently for each of the full-color transmittable region and the partial transmittable region.
Abstract:
An image display device is provided, with less color breaking in the field sequential method. A color component image with a relatively high luminance level is extracted as a fundamental image from an input image. A differential image is obtained by subtracting color component of the fundamental image from an input image, and is decomposed into a plurality of color components. The differential image for each color component is divided into two. The fundamental image is displayed at a middle timing of a frame period. The half-divided differential images are displayed at timings before and after the middle timing for the fundamental image so that the half-divided differential image with higher luminance level with consideration for visibility characteristic is displayed at a timing closer to the middle timing for the fundamental image.
Abstract:
A lighting device includes: a first light source group having first light sources partitioned into sections and controlled to light for each section; and a second light source group having second light sources partitioned into sections and controlled to light for each section. The second light source has a light distribution different from the first light source. The first and second light source groups are allowed to light independently of each other. The first light sources are arranged in a first array pattern allowing a uniform in-plane-distribution of luminance at a predetermined distance therefrom when whole of the first light source group is under lighting condition. The second light sources are arranged in a second array pattern different from the first array pattern. The second array pattern allows a uniform in-plane-distribution of luminance at the predetermined distance therefrom when whole of the second light source group is under lighting condition.
Abstract:
A light source unit is used in a multiply combined manner, and includes a light source element having a substrate and one or more light emitting elements disposed on the substrate. The light source unit is configured such that when a plurality of the light source units are arranged in cascade, the light source element in the light source unit comes to in electric connection with another light source element in an adjacent light source unit. Thereby, the plurality of light source units may emit light at the same time. Thus, the structure similar to rod-shaped light source such as CCFL is achieved.
Abstract:
Light intensity may be locally increased in light intensity distribution without increasing number of light sources or drive current. A light source system includes a light source, and a diffusion unit varying diffusibility in incident light so that light intensity in a light intensity distribution in a plane, resulted from light emitted from the light source, is locally enhanced.