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 |
20150181182 | Method for controlling display - A method for controlling a display is provided. An RGB video signal is transformed into an RGBW video signal based on a human factor. The display has a plurality of pixels configured to display images according to the RGBW video signal, where each of the pixels has a red subpixel, a green subpixel, a blue subpixel and a white subpixel. According to the method, when brightness of a backlight module of the display is reduced to decrease energy consumption of the display, quality of the images of the display observed by users is still maintained within an acceptable range. | 06-25-2015 |
20150185576 | Active Device Substrate and Display Panel Using The Same - An active device substrate includes scan lines, data lines, a first pixel electrode, a second pixel electrode, a first transistor, and a second transistor. The (M−1)th scan line, the (M)th scan line, the (N−1)th data line, and the (N)th data line define a first sub-pixel area. The (L)th scan line, the (L+1)th scan line, the (N)th data line, and the (N+1)th data line define a second sub-pixel area. The first pixel electrode, the first transistor, and the second transistor are disposed in the first sub-pixel area, and at least one portion of the second pixel electrode is disposed in the second sub-pixel area. The first transistor is electrically connected to one of the scan lines, one of the data lines, and the first pixel electrode. The second transistor is electrically connected to one of the scan lines, one of the data lines, and the second pixel electrode. | 07-02-2015 |
20150235587 | METHOD FOR DRIVING DISPLAY - A driving method for rendering subpixels of each pixel of a display is provided. The display has a plurality of first pixels and a plurality of second pixels. Each second pixel has a first color subpixel and a second color subpixel, but lacks a third color subpixel. Each first pixel has a second color subpixel and a third color subpixel, but lacks a first color subpixel. The first color subpixel, second color subpixel and third color subpixel are used to represent gray levels of a first color, a second color and a third color respectively. Processes of rendering the subpixels of each pixel are performed based on positions, saturations and brightness of neighboring pixels, such that quality of image displayed on the display could be ensured even though each first pixel lacks the first color subpixel and each second pixel lacks the third color subpixel. | 08-20-2015 |
Patent application number | Description | Published |
20080273816 | OPTICAL RECOGNITION DEVICE AND OPTICAL RECOGNITION DISPLAY COMPRISING THE SAME - An optical recognition device is provided. The optical recognition device includes a transparent substrate, a patterned infrared reflective film formed thereon, and an infrared anti-reflective film sheltering a gap in a recognition pattern of the patterned infrared reflective film, wherein the patterned infrared reflective film reflects the recognition pattern by reflection of infrared light and transmission of visible light. The invention also provides a display incorporating the optical recognition device. | 11-06-2008 |
20100238202 | Display Device and Method for Driving the same - An exemplary method for driving a display device is provided. At least one set of input signals is received. Finding the original signals being the same with the input signals in the signal transforming table is executed. The pixel driving signals is outputted. If at least one of the found second and third original signals is equal to zero, and the found first original signal is equal to neither zero nor maximal gray scale, at least one of the outputted second and third sub-pixel driving signals, and the outputted fourth sub-pixel driving signal are equal to zero. Then, at least one of the pixels of the pixel array is driven by the outputted pixel driving signals. The input signals is transformed into the pixel driving signals by use of the signal transforming table, thereby saving the cost and improving the displaying quality. | 09-23-2010 |
20140204008 | PIXEL AND SUB-PIXEL ARRANGEMENT IN A DISPLAY PANEL - Various arrangements of color sub-pixels in a group of pixels for use in a color display are disclosed. The same group of pixels is repetitively arranged in rows and columns in the color display. In particular, each group of pixels has four pixels arranged on the four quadrants of a rectangle or square. A pixel group may have two sub-pixels in R, two sub-pixels in G, two sub-pixels in B and two sub-pixels in W, but each of the pixels has two different color sub-pixels. In each of the four pixels in a pixel group, the two sub-pixels can be adjacent to each other along the column direction or along the row direction, but the two sub-pixels in at least one pixel are adjacent to each other along the column direction. A pixel group may have two pixels with R, G sub-pixels and two pixels in B. | 07-24-2014 |
20140267442 | METHOD AND APPARATUS FOR CONVERTING RGB DATA SIGNALS TO RGBW DATA SIGNALS IN AN OLED DISPLAY - A method for converting input RGB data signals to output RGBW data signals for use in an OLED display is disclosed. In the OLED display, each pixel has three color sub-pixels in RGB and one W sub-pixel. Input RGB data signals in signal space are normalized and converted into input data in luminance space. A baseline adjustment level is determined from the input data and is used to compute baseline adjusted data in luminance space. After being converted from luminance space into signal space, baseline adjusted data in RGBW are represented by N binary bits presented to the four sub-pixels. To suit the color characteristics of the display, color-temperature correction to the output signals is also carried out. In luminance space, the maximum color-temperature corrected output data fall within the range of 0.4/k and 0.5/k, with k being the ratio of W sub-pixel area to the color sub-pixel area. | 09-18-2014 |
20150284504 | HETEROCYCLIC COMPOUNDS AND THE SYNTHESIS METHOD THEREOF - A synthesis method of a heterocyclic compound is disclosed. The synthesis method includes steps of: carrying out a McMurry coupling reaction on a first compound having a carbonyl group to form a second compound, wherein the second compound includes an alkyl group which is symmetrical to a symmetrical center, and carrying out a 6π-cyclization on the second compound to form a third compound. | 10-08-2015 |
Patent application number | Description | Published |
20100238389 | DISPLAY PANEL, ELECTRO-OPTICAL APPARATUS AND FABRICATING METHODS THEREOF - A display panel including a pair of substrates, a color filter layer, and a display medium is provided. The substrates including a plurality of pixels, wherein each pixel at least having a first sub-pixel, a second sub-pixel, a third sub-pixel, and a fourth sub-pixel. The color filter layer is disposed on one of the substrates and at least has a first color filtering pattern disposed in the first sub-pixel, a second color filtering pattern disposed in the second sub-pixel, a third color filtering pattern disposed in the third sub-pixel, and a fourth color filtering pattern disposed in the fourth sub-pixel. The display medium is disposed between the pair of substrates, wherein the display medium correspondingly disposed in the first sub-pixel, the second sub-pixel, the third sub-pixel, and the fourth sub-pixel has thicknesses of T | 09-23-2010 |
20110292086 | DISPLAY DEVICE AND COLOR ADJUSTMENT METHOD FOR DISPLAY DEVICE - A display device includes a display panel, a light source module and a skin-color detector. The display panel has a plurality of sub pixel units, and the sub pixel units include red sub pixel units, green sub pixel units, blue sub pixel units and white sub pixel units. The light source module is disposed at a side of the display panel and the light source module includes a white light source and a yellow light source distributed in the white light source. The skin-color detector is electrically connected to the display panel, wherein the skin-color detector detects the skin-color area proportion of an image signal of the display panel. | 12-01-2011 |
20150070404 | METHOD FOR ADJUSTING SATURATION DEGREE AND COLOR ADJUSTING SYSTEM - A method for adjusting saturation degree and a color adjusting system are provided. The method for adjusting saturation degree includes the following steps. A hue circle is divided into a plurality of hue regions, and each of the hue regions is divided into a plurality of saturation regions according to at least one saturation threshold. A plurality of first input saturation degrees of a first saturation region of a first hue region of the hue regions are weighted by a first weighting formula for obtaining a plurality of first output saturation degrees. A plurality of second input saturation degrees of a second saturation region of the first hue region of the hue regions are weighted by a second weighting formula for obtaining a plurality of second output saturation degrees. The first weighting formula is different from the second weighting formula. | 03-12-2015 |