Patent application number | Description | Published |
20080239286 | Display panel, color filter and testing method thereof - A color filter with low color shift is defined by a light leakage spectrum in the dark state. The color filter is disposed between two polarizing plates so as to measure a first spectrum of dark state a(λ), wherein the polarizing directions of the polarizers are orthogonal to each other. A second spectrum of dark state b(λ) while the color filter is removed, and then a ratio spectrum of light leakage intensity I(λ)=(a(λ)/b(λ)) is determined. A maximum value P | 10-02-2008 |
20090273745 | Color filter and liquid crystal display panel using the same - A color filter including a substrate, a black matrix and a plurality of color filter films is provided. The black matrix is disposed on the substrate and the black matrix has a plurality of openings. The black matrix has a bottom surface contacting with the substrate and a top surface having an area equal to that of the bottom surface. Besides, a plurality of color filter films are disposed on the substrate exposed by the openings respectively and each of the color filter films has a flat top surface. In the above mentioned color filter, coincidence between the black matrix and the color filter films is excellent. | 11-05-2009 |
20100171910 | Display Device and Display Panel and Color Filter thereof - A display device and a display panel and a color filter thereof are provided. The color filter includes a transparent substrate, at least a red filter film, at least a green filter film, at least a plurality of blue filter film and at least a white filter film. The red filter films, the green filter films, the blue filter films and the white filter films are disposed on the transparent substrate. The blue filter films have a first largest transmittance when a light with first wavelength transmits it. The green filter films have a second largest transmittance when a light with second wavelength transmits it. The white filter films have a third largest transmittance when a light with third wavelength transmits it. The third largest transmittance is larger than the first largest transmittance and the second largest transmittance. The third wavelength is between the first wavelength and the second wavelength. Therefore, the images displayed by the display device with the color filter may have accurate color-level and high brightness. | 07-08-2010 |
20110090260 | FLAT PANEL DISPLAY HAVING DYNAMIC ADJUSTMENT MECHANISM AND IMAGE DISPLAY METHOD THEREOF - A flat panel display includes a four-color conversion unit, a backlight control unit, a backlight module, and a pixel array. The four-color conversion unit provides a first set of four color image signals corresponding to three color image input signals based on a preliminary conversion lookup table and provides corresponding conversion scaling factors. The backlight control unit generates a backlight adjusting factor based on the conversion scaling factors. The backlight module provides a backlight output having an intensity adjusted according to the backlight adjusting factor. The four-color conversion unit further provides a second set of four color image signals corresponding to the three color image input signals based on the backlight adjusting factor. The pixel array displays an image according to the second set of four color image signals and the backlight output. | 04-21-2011 |
20110304660 | DISPLAY DEVICE DRIVING METHOD AND DISPLAY DEVICE - An exemplary display device driving method is applied to a display device. The display device includes a pixel array and a data driving circuit. The pixel array has first through fourth pixels. Each of the first through fourth pixels includes first through fourth sub-pixels. In the display device driving method, each of the first through fourth pixels is provided with a data signal. At least one colored sub-pixel is enabled to display a second gray level in turns in multiple frames of a same frequency period, and the remained sub-pixels are enabled to display a first gray level smaller than the second gray level. | 12-15-2011 |
20120001947 | RGBW DISPLAY APPARATUS AND CONTROL METHOD THEREOF - In an exemplary RGBW display apparatus, a plurality of four-color image output signals and a plurality of mapping scale ratios are generated according to a plurality of three-color image input signals. Furthermore, a backlight output intensity outputted from a backlight module is dynamically adjusted according to the mapping scale ratios and a white color signal adjust ratio is generated. In addition, a white color signal in each of the four-color image output signals is adjusted to be an updated white color signal according to the white color signal adjust ratio. | 01-05-2012 |
20120306937 | BACKLIGHT MODULE, DISPLAY SYSTEM, AND DRIVING METHOD OF BACKLIGHT MODULE - A backlight module adapted to a display device for displaying multiple image frames to form an image. Herein the backlight module includes multiple light-emitting units and a driving circuit. The light-emitting units are arranged along a first direction. The driving circuit is electrically coupled to the light-emitting units to thereby drive the light-emitting units sequentially to emit light. During the driving circuit drives the light-emitting units, a light-emitting time of the firstly-turned-on light-emitting unit in the light-emitting units for illuminating a current image frame of the image frames has a portion in an image driving time of the current image frame, and the other portion of the light-emitting time is in the image driving time of a successive image frame immediately following the current image frame. Moreover, the disclosure also provides a display system using the above backlight module and a driving method of backlight module. | 12-06-2012 |
20140022271 | IMAGE SIGNAL PROCESSING METHOD - Provide a set of first RGB (red, green, blue) brightness levels of a set of pixels in a display panel. Generate a set of saturation levels according to the set of first RGB brightness levels. Generate a set of mapping ratios according to the set of saturation levels and the set of first RGB brightness levels. Generate a set of second RGB brightness levels according to the set of first RGB brightness levels and a minimum mapping ratio of the set of mapping ratios. Generate a set of RGBW (red, green, blue, white) brightness levels according to the set of second RGB brightness levels and a set of brightness levels of white sub-pixels of the set of RGBW brightness levels. And convert the set of RGBW brightness levels to generate a set of RGBW gray levels of the set of pixels. | 01-23-2014 |
20140035970 | DISPLAY AND METHOD OF DISPLAYING AN IMAGE WITH A PIXEL - A pixel includes four sub-pixels. The pixel is used to receive a plurality of signal values to display an image. The signal values are N-bit signal values, and the largest value of the signal values is (2 | 02-06-2014 |
20140055502 | METHOD OF COMPENSATING COLOR GAMUT OF DISPLAY - A method of compensating the color gamut of a display includes establishing a plurality of color gamut boundaries of four color hues, generating m sets of original luminance, chrominance and hue values according to m sets of tricolor grey level values, adjusting the chrominance of n sets of luminance, chrominance and hue values of the m sets of luminance, chrominance and hue values exceeding the plurality of color gamut boundaries with four color hues to generate n sets of corrected luminance, chrominance and hue values, generating m sets of four color grey levels according to the n sets of corrected luminance, chrominance and hue values and (m−n) sets of uncorrected luminance, chrominance and hue values, and displaying images on the display according to the m sets of four color grey levels. | 02-27-2014 |