Abstract:
A backlight control method for an LCD panel is disclosed, and includes steps of dividing the LCD panel into a plurality of backlight areas; configuring an expanding area and a weighted area for each backlight area of the plurality of backlight areas; and determining backlight intensity of each backlight area according to a weighted average grayscale value calculated with all pixels inside the expanding area and the weighted area, wherein the expanding area is formed by expanding outwardly from each backlight area, and the weighted area is focused on the center of each backlight area and has a range not greater than that of the expanding area.
Abstract:
The present invention relates to a drive circuit of light source by color sequential method for generating a full-color image based on sequential switching between red, green and blue illuminations. The drive circuit of light source by color sequential method includes a color-sequential control circuit and a plurality of radiating areas coupled to multiple light units. The color-sequential control circuit is connected to those radiating areas to control the operation thereof by the color sequential method.
Abstract:
A three-dimensional display device including a collimated backlight module, a first display panel, a second display panel, and a lens array is provided. The collimated backlight module has a light-emitting surface and provides a light with a divergent angle smaller than 10° from the light-emitting surface. The first display panel having a plurality of first pixels is disposed on the collimated backlight module. The second display panel has a plurality of second pixels corresponding to the first pixels. The first display panel is disposed between the second display panel and the collimated backlight module. A depth distance is formed between the first display panel and the second display panel. The lens array is disposed adjacent to the second display panel and has a plurality of lenses corresponding to the second pixels. Therefore, the three-dimensional display device is capable of providing a wide visual angle and desirable depth characteristics.
Abstract:
A color sequential liquid crystal display (color-sequential-LCD) and an LCD panel driving method thereof are disclosed. By changing the arrangement of the pixel array in the LCD panel and turning on several rows of pixels in the LCD panel at the same time, so that the color sequential LCD of the present invention not only respectively reduces the scanning time of red, green and blue video data to make the liquid crystal molecules of all the pixels on the LCD panel have enough response time but also respectively increases the lighting-up time of the red, green and blue light emitting diodes of the back light module to promote the display brightness of the entire LCD panel. Therefore, the color sequential LCD of the present invention displays a single color or a full color image without the bottom color mixing phenomenon, and furthermore, the display brightness thereof can be promoted.
Abstract:
An apparatus and a method for driving the light source of a projector are provided. The apparatus includes an adjustment unit, a lamp driver, a phase lock loop (PLL) and a mercury lamp. The adjustment unit provides an enabling signal and regulates the frequency of the enabling signal according to an indication signal. The lamp driver provides a driving signal according to the enabling signal and an input voltage, wherein the frequency of the driving signal is varied with the frequency of the enabling signal. The PLL provides a synchronized driving signal according to the driving signal and a vertical synchronization signal, wherein the synchronized driving signal is phase-synchronous with the frame field of the projector. The mercury lamp serves as the light source of the projector according to the synchronized driving signal.
Abstract:
A capacitive touch display panel includes a first substrate, a second substrate, an opaque pattern, a plurality of transparent conductive sensor pads, and a plurality of non-transparent conductive patterns. The first substrate and the second substrate are disposed oppositely. The transparent conductive sensor pads are disposed on the second substrate. The non-transparent conductive patterns are disposed on the second substrate, and the non-transparent conductive patterns and the transparent conductive sensor pads are electrically connected and overlapping. The conductivity of the non-transparent conductive patterns is higher than that of the transparent conductive sensor pads, and the non-transparent conductive patterns are corresponding to the opaque pattern.
Abstract:
The present invention relates to a drive circuit of light source by color sequential method for generating a full-color image based on sequential switching between red, green and blue illuminations. The drive circuit of light source by color sequential method includes a color-sequential control circuit and a plurality of radiating areas coupled to multiple light units. The color-sequential control circuit is connected to those radiating areas to control the operation thereof by the color sequential method.
Abstract:
The present invention relates to a current-balance circuit and a backlight module having the same. The current balance circuit includes a current balance unit, a control unit, and a detection unit. The current balance unit is connected to a plurality of light units to regulate the current of the plurality of light units, independent from the effects of input voltage. The detection unit is connected to the plurality of light units and the current balance unit to detect the minimum operating voltage for the plurality of light units. The control unit, connected to the current balance unit, controls the operation of the plurality of light units.
Abstract:
A back light module and a method for driving the back light module are disclosed. The back light module includes a plurality of light emitting units and a driving unit. The driving unit is electrically connected to the light emitting units and utilized for driving the light emitting units according to a switched-on number of the light emitting units and a dithering scheme.
Abstract:
The present invention discloses a liquid crystal display with function of static color compensation and method thereof, the purpose of the present invention is achieved by utilizing LC Off technique and light sensing technique. The liquid crystal display comprises: a liquid crystal plate; a backlight, disposed on at least one side of the liquid crystal plate; at least one light sensor, disposed adjacent to the liquid crystal plate, and the light sensor has a sensing plane which faces to the backlight; and a timing controller, which receives brightness value measured from the light sensor when LC Off and computes the data to monitor the brightness and chromaticity of the backlight.