Color Patents (Class 345/88)
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Patent number: 8704740Abstract: An exemplary embodiment of method of establishing a gamma table using a system includes following steps. Providing a signal generator, a display device, and a color analyzer, consists of measuring luminance values of the images corresponding to a plurality of reference sampling points. Obtaining a luminance characteristic curve based on the reference sampling points and luminance values using Bezier curve interpolation. Locating the gray scales on the luminance characteristic curve with the same luminance values as the gray scales of a standard gamma table. And establishing a gamma table by comparing the gray scales of the standard gamma curve and the luminance characteristic curve.Type: GrantFiled: March 10, 2010Date of Patent: April 22, 2014Assignees: Innocom Technology (Shenzhen) Co., Ltd., Chimei Innolux CorporationInventor: Jian-Feng Wang
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Patent number: 8704739Abstract: In a method of driving a display panel which includes a unit pixel including a first liquid crystal capacitor and a second liquid crystal capacitor, the first liquid crystal capacitor and the second liquid crystal capacitor are respectively charged with a high voltage and a low voltage which is less than the high voltage, during a first interval of a frame. The first liquid crystal capacitor and the second liquid crystal capacitor are both charged with a voltage between the high voltage and the low voltage, during a second interval of the frame after the first interval of the frame.Type: GrantFiled: April 5, 2013Date of Patent: April 22, 2014Assignee: Samsung Display Co., Ltd.Inventor: Jang-Kun Song
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Publication number: 20140104322Abstract: The present invention discloses a method and a device for adjusting a display picture to solve a problem in the prior art that when Greenish phenomenon of a liquid crystal display screen is alleviated, aperture ratio of the display panel is decreased so that power consumption of the screen is increased. The method for adjusting the display picture includes the steps of: receiving a first clock signal for controlling a data line voltage signal for a pixel of the first color in the display picture and receiving a second clock signal for controlling data line voltage signals for pixels of the other colors; and making a pulse width at high level of the first clock signal smaller than a high level pulse width of the second clock signal, wherein the first color is closer to green than other colors.Type: ApplicationFiled: October 11, 2013Publication date: April 17, 2014Inventors: Chao Xu, Chunfang Zhang, Yan Wei, Heecheol Kim
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Publication number: 20140104324Abstract: A display apparatus includes a temperature sensor, a timing controller, a data driver and a display panel. The temperature sensor senses a temperature, the timing controller includes a dynamic capacitance capture (“DCC”) block, which converts a green data, a red data and a blue data into a green compensation data, a red compensation data and a blue compensation data, respectively, based on the temperature sensed by the temperature sensor, and the data driver converts the red compensation data, the green compensation data and the blue compensation data into a data voltage and outputs the data voltage. The display panel receives the data voltage and displays an image.Type: ApplicationFiled: December 18, 2013Publication date: April 17, 2014Applicant: Samsung Display Co., Ltd.Inventors: BONGIM PARK, Nam-Gon CHOI, ByungKil JEON, Jae-Won JEONG, Woo-Young LEE, Kang-Hyun KIM
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Patent number: 8698715Abstract: A display device (10) includes an upper substrate (first substrate) (2), a lower substrate (second substrate) (3), and a conductive liquid (16) that is movably sealed in a display space (S) formed between the upper substrate (2) and the lower substrate (3). In the display device (10), an electrode member (f) for filling the conductive liquid (16) is provided in the display space (S) and configured so that a predetermined voltage can be applied thereto, and the conductive liquid (16) is filled in the display space (S) by applying the predetermined voltage to the electrode member (f).Type: GrantFiled: August 7, 2008Date of Patent: April 15, 2014Assignee: Sharp Kabushiki KaishaInventors: Shinichi Nakano, Akio Miyata, Tomoko Teranishi, Toshiki Matsuoka, Kazuhiro Deguchi
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Patent number: 8698719Abstract: A displaying method for field sequential color displays using two color fields to produce a full color image is disclosed. The displaying method includes: providing a target full color image, displaying a first color field and displaying a second color field. The target full color image is formed by a first color image optical stimulus, a second color image optical stimulus and a third color image optical stimulus. The first color field displays the first color image optical stimulus and a first part of the third color image optical stimulus, while the second color field displays the second color image optical stimulus and a second part of the third color image optical stimulus, which compensates the shortage of the third color image optical stimulus in the first color field. The target full color image is generated by displaying the first and second color fields in sequence, so as to decrease the displaying frequency of field sequential color displays.Type: GrantFiled: September 18, 2013Date of Patent: April 15, 2014Assignee: AU Optronics CorporationInventors: Yu-Kuo Cheng, Yi-Pai Huang, Yi-Ru Cheng, Han-Ping D. Shieh
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Patent number: 8692942Abstract: Provided is a data processing apparatus including a correction circuit. In at least one embodiment, the data correction circuit acquires pixel data of a first pixel for display of a first color component and pixel data of a second pixel for display of a second color component, the second pixel being driven by a scanning signal line which drives the first pixel and being driven by a data signal line which is adjacent to the first pixel, and corrects the pixel data of the second pixel in accordance with a relationship between a value of the pixel data of the first pixel and a value of the pixel data of the second pixel. Thus, it is possible to cause a liquid crystal driving panel to perform uniform display without causing display unevenness even in a case where a halftone of a specific color component is uniformly displayed.Type: GrantFiled: June 5, 2009Date of Patent: April 8, 2014Assignee: Sharp Kabushiki KaishaInventors: Toshikazu Tsuchiya, Masae Kawabata, Fumikazu Shimoshikiryoh
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Patent number: 8687026Abstract: Disclosed embodiments relate to a display temperature detection system that can detect temperature variations in different regions of a display panel. The temperature measuring display system includes a display panel that provides graphical images. Further, the temperature measuring display system includes temperature measurement circuitry. The temperature measurement circuitry includes one or more thermal diodes, transistors, or a mesh layer useful to determine at least one temperature measurement of the display panel.Type: GrantFiled: September 28, 2011Date of Patent: April 1, 2014Assignee: Apple Inc.Inventors: Joshua Grey Wurzel, Ahmad Al-Dahle
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Publication number: 20140085357Abstract: A source driver for driving at least one sub-pixel is disclosed, in which the source driver includes a gamma voltage generator and a digital to analog converter. The gamma voltage generator generates a plurality of gamma voltages, in which the gamma voltage generator includes a first gamma resistor string and an operation circuit. The first gamma resistor string includes a plurality of resistors electrically connected serially for dividing a first gamma reference voltage and a second gamma reference voltage into the gamma voltages. The operation circuit optionally adds increments to the gamma voltages according to a timing control signal, wherein the increments are the same when the gamma voltages are added. The digital to analog converter selecting one of the gamma voltages generated by the operation circuit as a driving voltage based on received digital pixel data.Type: ApplicationFiled: November 19, 2013Publication date: March 27, 2014Applicant: HIMAX TECHNOLOGIES LIMITEDInventors: Meng-Tse Weng, Chuan-Che Lee, Chin-Tien Chang, Chien-Ru Chen
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Patent number: 8681189Abstract: Systems and methods of image processing are provided for a display having a light source modulation layer and a display modulation layer. A section of a perceptual curve, such as a DICOM curve, is extracted for each frame of image data, based on a profile of expected luminance on the display modulation layer from light emitted by the light source modulation layer. The section of the perceptual curve may be used to determine a desired-total response curve which maps display modulation layer input control values to corresponding output luminance values. The desired-total response curve and a display modulator-specific response curve may be applied to image data to generate control values for driving the display modulation layer.Type: GrantFiled: September 17, 2009Date of Patent: March 25, 2014Assignee: Dolby Laboratories Licensing CorporationInventors: Damir Wallener, Lewis Johnson
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Patent number: 8681081Abstract: In an active matrix display device including pixels of three colors having a stripe arrangement or a delta arrangement, n (n denotes a multiple of 3 that is 6 or larger) adjacent data lines form one group and are connected to a source signal output line. The ON/OFF of a selection switch provided for each data line is controlled so that, among the n data lines forming one group, data lines corresponding to pixels of a color with a contribution to brightness smaller than a contribution of at least another color among the three colors are connected first and last with the source signal output line during one horizontal period.Type: GrantFiled: July 13, 2005Date of Patent: March 25, 2014Assignee: Sharp Kabushiki KaishaInventors: Takuya Tsuda, Maki Sasagawa, Ken Inada
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Publication number: 20140078195Abstract: A liquid crystal display includes a pixel circuit having a first hold unit, a second hold unit, a transfer control unit and a pixel unit. The first hold unit selectively holds a higher or lower driving voltage which is arbitrarily set between a ground potential and a power-supply voltage, according to a row selection signal from a vertical scanning unit and a logical value of data from a horizontal scanning unit. The second hold unit selectively holds the higher or lower driving voltage held in the first hold unit. The transfer control unit transfers to the second hold unit, the higher or lower driving voltage held in the first hold unit according to a trigger pulse. The pixel unit drives a liquid crystal according to a potential difference between the higher or lower driving voltage held in the second hold unit and a voltage supplied to a common electrode thereof.Type: ApplicationFiled: September 17, 2013Publication date: March 20, 2014Applicant: JVC KENWOOD CorporationInventor: Takayuki IWASA
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Patent number: 8675031Abstract: A liquid crystal display device according to the present invention comprises a pixel including a plurality of sub pixels. The plurality of sub pixels include a red sub pixel (R), a green sub pixel (G), a blue sub pixel (B), a yellow sub pixel (Ye) and a cyan sub pixel (C). The aperture area size of one of the cyan sub pixel (C) and the blue sub pixel (B) is larger than the aperture area size of any of the other of the cyan (C) and blue (B) sub pixels, the green sub pixel (G) and the yellow sub pixel (Ye); and the aperture area size of the red sub pixel (R) is larger than the aperture area size of any of the other of the cyan (C) and blue (B) sub pixels, the green sub pixel (G), and the yellow sub pixel (Ye).Type: GrantFiled: October 26, 2010Date of Patent: March 18, 2014Assignee: Sharp Kabushiki KaishaInventors: Kohzoh Nakamura, Shun Ueki, Kazunari Tomizawa, Tomohiko Mori, Yuichi Yoshida
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Patent number: 8674916Abstract: A driving method with reducing image sticking effect is disclosed. The driving method includes applying a voltage on the data lines for trapping impurities crossing the data lines and lowering the degree of the image sticking effect, and applying different asymmetric waveforms to different data lines for trapping impurities crossing the data lines and lowering the degree of the image sticking effect.Type: GrantFiled: August 4, 2011Date of Patent: March 18, 2014Assignee: AU Optronics Corp.Inventors: Pin-Miao Liu, Shui-Chih Lien, Chia-Horng Huang, Chien-Huang Liao, Yu-Hsi Ho, Ting-Jui Chang, Yao-Jen Hsieh, Jenn-Jia Su
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Patent number: 8675027Abstract: There are provided a light source (1) having a plurality of light emitters, each of the light emitters, whose light-emission period is controlled separately, emitting one color of a plurality of colors; an image signal analyzer for analyzing an input image data, and determining a timing of light emission for each light emitter; a light source controller (5) for controlling the light-emission period for the light source based on the light-emission timing for each light emitter, such that the light-emission period is not shorter than a light-emission period of a predetermined minimum time length light-emission period; a light detector (6) for detecting the light emitted in the light-emission period of the minimum time length, and outputting the average light-emission peak values (Ir1, Ig1, Ib1); and a peak value corrector (7) for generating correction values (d_Ir, d_Ig, d_Ib) for controlling each of the average light-emission peak values (Ir1, Ig1, Ib1) to become equal to corresponding one in the reference peaType: GrantFiled: April 28, 2010Date of Patent: March 18, 2014Assignee: Mitsubishi Electric CorporationInventors: Nami Nakano, Shuichi Kagawa
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Publication number: 20140071187Abstract: A display device includes a calculation unit which calculates a required luminance according to a set luminance for each color of a backlight, for each of a first video signal and a second video signal, and obtains the higher of the required luminance corresponding to the first video signal and the required luminance corresponding to the second video signal as an objective luminance for each color based on a calculation result, a backlight driving unit which drives the backlight for each color according to the obtained objective luminance of each color, a detection unit which compares the required luminance with the objective luminance and detects, for each color, the required luminance corresponding to the video signal lower than the objective luminance, and a brightness adjustment unit which performs adjustment for each color so that an image corresponding to the video signal lower than the objective luminance is darkened.Type: ApplicationFiled: May 31, 2011Publication date: March 13, 2014Inventor: Katsuyuki Matsui
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Patent number: 8669972Abstract: A driving method of a liquid crystal display panel having a source line and a counter electrode, includes driving the counter electrode to a first potential, driving the, counter electrode to a second potential being different from the first potential, setting the counter electrode and the source line to a third potential by short-circuiting the counter electrode and the source line to an interconnection having a potential between the first potential and the second potential, and driving the source line to a potential corresponding to an image data. The setting of the counter electrode and the source line to the third potential occurs in a period of one frame.Type: GrantFiled: September 14, 2012Date of Patent: March 11, 2014Assignee: Renesas Electronics CorporationInventor: Hiroaki Shirai
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Patent number: 8665401Abstract: The disclosed invention is with regard to a liquid crystal display panel including a substrate having a plurality of layers formed thereon, and having a first surface region and a second surface region on a surface of an uppermost layer of the plurality of layers, wherein the first and second surface regions having different surface characteristics in reaction to a particular liquid, and a spacer formed on the second surface region.Type: GrantFiled: April 26, 2011Date of Patent: March 4, 2014Assignee: LG Display Co., Ltd.Inventors: Jeong Hyun Kim, Jae Hong Jun
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Patent number: 8665297Abstract: A display apparatus includes a temperature sensor, a timing controller, a data driver and a display panel. The temperature sensor senses a temperature, the timing controller includes a dynamic capacitance capture (“DCC”) block, which converts a green data, a red data and a blue data into a green compensation data, a red compensation data and a blue compensation data, respectively, based on the temperature sensed by the temperature sensor, and the data driver converts the red compensation data, the green compensation data and the blue compensation data into a data voltage and outputs the data voltage. The display panel receives the data voltage and displays an image.Type: GrantFiled: April 8, 2010Date of Patent: March 4, 2014Assignee: Samsung Display Co., Ltd.Inventors: Bongim Park, Nam-Gon Choi, ByungKil Jeon, Jae-Won Jeong, Woo-Young Lee, Kang-Hyun Kim
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Publication number: 20140055330Abstract: A pixels group includes first to fourth pixels disposed in a 2*2 matrix. Each of the first to fourth pixels includes first to third sub-pixels. Each of the first sub-pixels of first to fourth pixels has a first color. The second sub-pixel of first pixel and the second sub-pixel of fourth pixel have a second color. The third sub-pixel of first pixel and the third sub-pixel of fourth pixel have a third color. The second sub-pixel of second pixel and the second sub-pixel of third pixel have a fourth color. The third sub-pixel of second pixel and the third sub-pixel of third pixel has a fifth color.Type: ApplicationFiled: March 15, 2013Publication date: February 27, 2014Inventors: Sung-Jae PARK, Se-Ah KWON, Ki-Soo PARK, Ik-Soo LEE, Jong-Hak HWANG
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Patent number: 8659725Abstract: A pixel structure, which may be used in a liquid crystal display panel, includes a plurality of display pixel units and a plurality of control devices. Each of the display pixel units includes a first sub-pixel adapted to provide a first color, a second sub-pixel adapted to provide a second color, a third sub-pixel adapted to provide a third color, a first white sub-pixel, a second white sub-pixel, and a third white sub-pixel. Each of the control devices is employed for respectively controlling each of the sub-pixels. The liquid crystal display panel is normally white when the first sub-pixel, the second sub-pixel, the third sub-pixel, the first white sub-pixel, the second white sub-pixel, and the third white sub-pixel are not driven by the control devices.Type: GrantFiled: March 9, 2012Date of Patent: February 25, 2014Assignee: AU Optronics Corp.Inventors: Wen-Bin Lo, Ching-Huan Lin, Chu-Yu Liu, Norio Sugiura
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Patent number: 8659526Abstract: An electro-optical device includes, on a substrate, three sub-pixels, three sampling switches, three data lines, three image signal lines, and three lead wiring lines. The three sub-pixels correspond to red, green and blue, respectively. The three sub-pixels are included in a unit pixel. The three sampling switches correspond to the three sub-pixels, respectively. The three data lines electrically connect the three sub-pixels and the three sampling switches with each other, respectively. The three image signal lines, which are provided on a side opposite to the three sub-pixels with respect to the three sampling switches, correspond to the three sampling switches, respectively. The three lead wiring lines electrically connect the three sampling switches and the three image signal lines with each other, respectively. Among the three sampling switches, a sampling switch corresponding to green is disposed close to the three image signal lines compared to other two sampling switches.Type: GrantFiled: October 30, 2010Date of Patent: February 25, 2014Assignee: Seiko Epson CorporationInventor: Akihiko Ito
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Publication number: 20140049573Abstract: An image display device includes a color component ratio extracting unit that extracts a color component ratio for reproducing a target display color included in a target image as a light emission color component ratio candidate, a light emission color component ratio selecting unit that selects a light emission color component ratio (a color component ratio when LEDs of a plurality of colors included in an LED unit emit light) in each sub-frame period from among light emission color component ratio candidates extracted by the color component ratio extracting unit, and a pixel modulation degree calculating unit that obtains a light modulation degree of each pixel formation portion in each sub-frame period. One frame period is configured by a plurality of sub-frame periods in which mixed-color display is possible, and achromatic display is performed in at least one sub-frame period among the plurality of sub-frame periods.Type: ApplicationFiled: May 11, 2012Publication date: February 20, 2014Applicant: SHARP KABUSHIKI KAISHAInventor: Tomoyuki Ishihara
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Publication number: 20140049527Abstract: A display device comprises: a display screen, a pixel layer, a backlight, and at least one ambient light sensor (ALS) which detects ambient light around the display device.Type: ApplicationFiled: August 15, 2012Publication date: February 20, 2014Applicant: DELL PRODUCTS L.P.Inventors: Thomas Lanzoni, Richard Schuckle
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Patent number: 8654064Abstract: An LED backlight array in which every LED, regardless of whether it is a red, green, cyan, or blue LED, contains a blue emitter. As each LED contains the same type of emitter, the backlight can be driven by a single blue driver circuit, rather than separate red, green, cyan, and blue drivers. That is, the present disclosure removes the need for red, cyan, and green driver circuits, allowing for simpler and cheaper backlights. Additionally, even though the LED backlight can contain LEDs of different colors, each has a blue emitter, and thus possesses similar aging characteristics.Type: GrantFiled: October 18, 2010Date of Patent: February 18, 2014Assignee: Samsung Display Co., Ltd.Inventor: Candice Hellen Brown Elliott
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Patent number: 8654050Abstract: A multi-primary-color liquid crystal display device according to the present invention is adapted to conduct a display operation in at least four primary colors. The device has a plurality of pixels that form at least two different types of subsets. The device can perform rendering processing in which at least one of the pixels that form a first one of the at least two different types of subsets lends a luminance to a second type of subset. Each pixel includes a first sub-pixel and a second sub-pixel that could have mutually different luminance. The second type of subset borrows a luminance from one of the first and second sub-pixels of the at least one pixel that has the higher luminance.Type: GrantFiled: September 11, 2008Date of Patent: February 18, 2014Assignee: Sharp Kabushiki KaishaInventors: Shun Ueki, Kohzoh Nakamura, Akiko Miyazaki
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Publication number: 20140043371Abstract: A controller for a multi-primary display having M>3 primaries receives a set of input N-primary image color defining values comprising drive values for N primaries for each pixel. A compensator (317) generates a set of compensated N-primary image color (N>=3) defining values by applying a luminance compensation to the values of the set of input N-primary image color defining values where the luminance compensation for each pixel depends on the chromaticity of the pixel. A backlight processor (311) determines backlight levels in response to the compensated N-primary image color defining values. A modifier (313) then generates modified N-primary image color defining values by adjusting the input or the modified N-primary image color defining values or the for the backlight level and a primary converter (315) converts the modified N-primary image color defining values into multi-primary drive values for the display. The approach may e.g.Type: ApplicationFiled: April 11, 2011Publication date: February 13, 2014Inventors: Erno Hermanus Antonius Langendijk, Karel Johannes Gerhardus Hinnen, Michiel Adriaanszoon Klompenhouwer
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Patent number: 8648840Abstract: A display apparatus includes: a pixel array section including a row of first and second scanning lines, a column of signal lines, and pixels in a matrix, each of the pixels disposed at an intersection of both of the lines; and a drive section. The drive section performs line progressive scanning on the pixels. The pixel includes a light emitting device, a sampling transistor, a driving transistor, a switching transistor, and a holding capacitor. The sampling transistor samples a video signal on the signal line to hold the signal potential in the holding capacitor, the driving transistor makes the light emitting device conductive to be in a luminous state in accordance with the held signal potential, and the switching transistor becomes ON in accordance with the control signal supplied in advance of the sampling of the video signal to change the light emitting device to a non-luminous state.Type: GrantFiled: March 11, 2008Date of Patent: February 11, 2014Assignee: Sony CorporationInventors: Katsuhide Uchino, Tetsuro Yamamoto
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Patent number: 8648888Abstract: The present invention relates to an image display device and a method of manufacturing the image display device that make it possible to form pixels with a smaller number of sub-pixels as compared with a case where one pixel is formed so as to separately include one each of sub-pixels of three colors of R, G, and B, and make full-color display by making the sub-pixels emit light by time division. The present invention can provide an image display device that makes it possible to reduce the number of sub-pixels and form pixels at a high density by sharing respective sub-pixels between pixels and displaying the sub-pixels by time division and thus realize high picture quality and reduction in the number of parts.Type: GrantFiled: August 21, 2007Date of Patent: February 11, 2014Assignee: Sony CorporationInventors: Takehisa Natori, Yoshimitsu Tanaka
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Patent number: 8648783Abstract: A driving apparatus and a method for a liquid crystal display wherein a picture can be inspected by a specific image signal when an image signal is not applied is provided. In the driving apparatus, an image signal processor extracts a complex synchronizing signal and a first image signal from a complex image signal input from an external source. An image signal generator generates a second image signal. An input signal detector counts the pulses in the complex synchronizing signal to generate a selection signal. An image signal selector selectively outputs any one of the first image signal from the image signal processor and the second image signal from the image signal generator in response to the selection signal. A data driver applies an output image signal selected and output by the image signal selector to the liquid crystal display panel.Type: GrantFiled: September 29, 2004Date of Patent: February 11, 2014Assignee: LG Display Co., Ltd.Inventors: Jong Sang Baek, Sun Young Kwon
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Publication number: 20140035968Abstract: A two-dimension (2D) and three-dimension (3D) switchable display device and display driving method thereof are provided. Each pixel unit of the 2D and 3D switchable display device includes a first sub-pixel, a second sub-pixel and a third sub-pixel. The first sub-pixel, driven by a first gate line, has a first sub-pixel voltage, and the third sub-pixel, driven by a second gate line, has a third sub-pixel voltage different from the first sub-pixel voltage. The charge of the second sub-pixel is shared by a first gate line of an adjacent pixel unit, and the second sub-pixel has a second sub-pixel voltage different from the first sub-pixel voltage and the third sub-pixel voltage. The first sub-pixel, the second sub-pixel and the third sub-pixel of the pixel unit can be driven in a pre-charge driving manner.Type: ApplicationFiled: March 12, 2013Publication date: February 6, 2014Applicant: AU Optronics Corp.Inventors: Yi-Ching Chen, Yu-Sheng Huang, Chia-Lun Chiang, Chia-Wei Chen
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Patent number: 8643629Abstract: A color filter includes a transparent substrate, a conductive layer, a color filtering layer, and a protection layer. The conductive layer is formed on the transparent substrate for sensing touch signals, and the periphery of the conductive layer is provided with peripheral electrodes. The color filtering layer is formed on the conductive layer and includes multiple red light filtering sections, multiple green light filtering sections, and multiple blue light filtering sections, and a pixel of a liquid crystal display device includes at least one red light filtering section, at least one green light filtering section and at least one blue light filtering section. The protection layer is formed on the color filtering layer.Type: GrantFiled: February 27, 2009Date of Patent: February 4, 2014Assignee: Wintek CorporationInventor: Chien-Chung Kuo
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Patent number: 8643683Abstract: A driver of a field sequential display is provided. The driver includes a first power device, a second power device, and a driving waveform generator. The first power device generates a first power when the field sequential display is in a color mode. The second power device generates a second power when the field sequential display is in a monochrome mode. The voltage and current of the second power are respectively smaller than the voltage and the current of the first power. The driving waveform generator coupled to the first power device and the second power device and generates a plurality of scan signals and a plurality of display signals according to the first power or the second power, so as to drive a display panel of the field sequential display.Type: GrantFiled: June 28, 2010Date of Patent: February 4, 2014Assignee: Nuvoton Technolgoy CorporationInventor: Pao-Shu Chang
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Publication number: 20140028739Abstract: Disclosed is a display device that (i) converts an input image formed of R, G, and B into a converted image formed of R, G, B, and W to display the converted image and that (ii) compresses the luminance of an input image for the subsequent frame on the basis of an adjustment value C which is corrected in correspondence with the number of, among all pixels in a converted image for the current frame, pixels in a state of luminance saturation and that then converts the input image into a converted image, the display device including a luminance oscillation detecting section (10) for detecting, while input images identical to each other are being inputted each as the above input image, whether converted images corresponding to the respective input images have an oscillating luminance, the display device, in the case where the luminance oscillation detecting section (10) has detected that the converted images have an oscillating luminance, stopping correction of the adjustment value C to fix the adjustment value CType: ApplicationFiled: April 9, 2012Publication date: January 30, 2014Applicant: SHARP KABUSHIKI KAISHAInventors: Kohzoh Takahashi, Taketoshi Nakano, Asahi Yamato, Ken Inada, Fumiyuki Kobayashi, Toshihiro Yanagi
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Publication number: 20140015871Abstract: A displaying method for field sequential color displays using two color fields to produce a full color image is disclosed. The displaying method includes: providing a target full color image, displaying a first color field and displaying a second color field. The target full color image is formed by a first color image optical stimulus, a second color image optical stimulus and a third color image optical stimulus. The first color field displays the first color image optical stimulus and a first part of the third color image optical stimulus, while the second color field displays the second color image optical stimulus and a second part of the third color image optical stimulus, which compensates the shortage of the third color image optical stimulus in the first color field. The target full color image is generated by displaying the first and second color fields in sequence, so as to decrease the displaying frequency of field sequential color displays.Type: ApplicationFiled: September 18, 2013Publication date: January 16, 2014Applicant: AU OPTRONICS CORP.Inventors: YU-KUO CHENG, YI-PAI HUANG, YI-RU CHENG, HAN-PING D. SHIEH
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Publication number: 20140015741Abstract: A programmable Gamma circuit of a LCD display device includes a control signal generator for generating multiple control signals; one or more voltage-reducing circuits for generating multiple voltage-reduced signals corresponding to a common voltage feedback signal outputted from a LC array of the LCD display device; and multiple amplifying circuits for respectively amplifying the multiple coupled signals to generate multiple Gamma calibration signals. The multiple voltage-reduced signals are respectively coupled with the multiple control signals to generate multiple coupled signals.Type: ApplicationFiled: June 24, 2013Publication date: January 16, 2014Inventors: Der-Jiunn WANG, Tien-Jung WU
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Publication number: 20140015740Abstract: The present invention provides a liquid crystal display panel containing an array substrate and a color filter substrate opposing the array substrate. The array substrate has a first pixel electrode and a storage electrode with the storage electrode configured below the first pixel electrode. The color filter substrate has a second pixel electrode. The first and second pixel electrodes cross each other laterally; and at least one of the first and second pixel electrodes has a number of ITO slits of unequal lengths at a location corresponding to an edge of the storage electrode. By configuring ITO slits of different lengths on the pixel electrodes corresponding to the edge of storage electrode can enhance the electric field pattern, effectively overcome the interference from lateral electric field, and avoid the abnormal display, resulted from the abnormal metal taper, thereby achieving enhanced display quality.Type: ApplicationFiled: July 18, 2012Publication date: January 16, 2014Applicant: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO.,LTD.Inventors: Xiaohui Yao, Je-Hao Hsu
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Patent number: 8629822Abstract: An highly bright and energy efficient FSC color liquid crystal display device incorporating a white light source is provided. The FSC color display device includes a first light source for emitting a light having a plurality of colors, a second light source for emitting a white light, and a light source controller for displaying a color image so as to control the first light source to repeat, in a predetermined cycle, sequentially making a selection from the plurality of color light sources to cause the selected color light source to emit a light, and to control the second light source so that the second light source emits a white light concurrently with light emission from the first light source.Type: GrantFiled: June 13, 2007Date of Patent: January 14, 2014Assignee: Citizen Holdings Co., Ltd.Inventor: Takashi Akiyama
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Patent number: 8629827Abstract: A display device includes a display panel, a data driving part and a gate driving part. The display panel includes a first pixel row. The first pixel row includes a first pixel connected to an (n+1)-th gate line and an (m+1)-th data line (where ‘n’ and ‘m’ are natural numbers), and a second pixel connected to an n-th gate line and an (m+2)-th data line. The data driving part applies a data voltage having a first polarity with respect to a reference voltage to the (m+1)-th data line, and applies a data voltage having a second polarity with respect to the reference voltage to the (m+2)-th data line. The gate driving part sequentially applies a gate signal to the n-th gate line and the (n+1)-th gate line.Type: GrantFiled: April 19, 2010Date of Patent: January 14, 2014Assignee: Samsung Display Co., Ltd.Inventors: Jae-Hoon Lee, Yong-Soon Lee, Young-Su Kim, Yu-Han Bae
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Patent number: 8624824Abstract: A backlight display has improved display characteristics. An image may be displayed on the display where the image includes a liquid crystal material with a light valve. The display receives an image signal and uses the image signal to modify the light for a backlight array and a liquid crystal layer.Type: GrantFiled: March 19, 2009Date of Patent: January 7, 2014Assignee: Sharp Laboratories of America, Inc.Inventor: Xiao-fan Feng
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Publication number: 20140002333Abstract: An embodiment of the present invention provides a display including: a first substrate; gate lines and data lines defining a first color, second color, and third color pixel area; a first color, second color, and third color pixel transistor located in the first color, second color, and third color pixel area respectively; a second substrate; and a black matrix, wherein the black matrix has a first portion and a second portion, and the first portion extends from an edge of a first color pixel active layer for a first shading distance, the second portion extends from an edge of a third pixel active layer for a second shading distance larger than the first shading distance.Type: ApplicationFiled: June 26, 2013Publication date: January 2, 2014Inventors: Chia-Hao TSAI, Chih-Lung LIN
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Publication number: 20140002507Abstract: A display device is configured for two-field sequential operation using a multi-colored backlight and an array of selectable filters where the array includes a subpixel repeat group having more than three non-white colors. The display device includes: an array of filters for defining pixels of an image, wherein each subpixel repeat group in the array comprises at least four non-white filters and at least one white filter; a backlight module comprising an array of at least four non-white light emitting diodes; and a control unit configured to operate the array of filters and the backlight module in a two-field sequential operation scheme such that for each subpixel repeat group in the array, most of the filters are usable (for having valved light passed therethrough) in both fields, two of the filters are usable on a mutually exclusive, and at least one filter is usable only in one of the fields.Type: ApplicationFiled: June 29, 2012Publication date: January 2, 2014Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: Moshe Ben-Chorin, Shmuel ROTH
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Patent number: 8619010Abstract: In at least one embodiment of the present invention, display is performed with high color reproducibility by a display device that performs area active drive. An LED output value calculating unit obtains LED data representing the luminances upon light emission of LEDs provided for respective areas, based on an input image. A display luminance calculating unit calculates a luminance image including display luminances for the respective areas, based on the LED data and a luminance spread filter.Type: GrantFiled: June 1, 2009Date of Patent: December 31, 2013Assignee: Sharp Kabushiki KaishaInventor: Yuji Tanaka
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Patent number: 8619012Abstract: A display element (100) corresponds to a pixel of a display. The display element includes a top electrode (102) connected to a first addressable line of the display, and a bottom electrode (104) connected to a second addressable line of the display. The display element includes a display mechanism (106) situated between the top electrode and the bottom electrode and having a number of individually turned-on steps. Each individually turned-on step has a turn-on voltage threshold at which the step is turned on upon a voltage applied between the top and the bottom electrodes equal to or greater than the turn-on voltage threshold. Each individually turned-on step has a turn-off voltage threshold at which the step is turned off upon a voltage applied between the top and the bottom electrodes equal to or less than the turn-off voltage threshold.Type: GrantFiled: July 19, 2007Date of Patent: December 31, 2013Assignee: Hewlett-Packard Development Company, L.P.Inventors: Peter Fricke, Alan R Arthur, Joseph Stellbrink, Tim R Koch
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Patent number: 8619102Abstract: A display apparatus and a method for adjusting brightness thereof are provided. The display apparatus includes a panel unit which displays a video signal, a light emitting unit which provides the panel unit with a ray of light and causes the video signal to be visualized, a light emission control unit which controls the light emitting unit so that the ray of light is provided to each of local areas of the panel unit, and a panel control unit which compensates pixels of the video signal in each of local areas, to remove an artifact which is generated due to the ray of light provided to local areas of the panel unit. Because brightness of a screen is adjusted in each of local areas, contrast ratio is enhanced, and improved image quality is provided.Type: GrantFiled: January 18, 2008Date of Patent: December 31, 2013Assignee: Samsung Electronics Co., Ltd.Inventors: Han Feng Chen, Yung-jun Park, Jun-ho Sung, Hoon Choi, Jun-ho Jung
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Patent number: 8619009Abstract: A display control drive device sequentially reads display data from a display memory in which the display data is stored, produces three primary color image signals that are applied to pixel locations in a dot-matrix color display device, and transmits the signals through a common external output terminal in a time-sharing manner. The display control drive device produces control signals applied to selection switching elements in the display device and that selectively apply an input image signal to any of three source lines. The display control drive device includes: a unit that determines one horizontal period based on a clock received from outside synchronously with display data; and a signal production circuit that produces and transmits the control signals, applied to the selection switching elements, so that the control signals will have a pulse duration equivalent to a time calculated by trisecting one horizontal period.Type: GrantFiled: December 4, 2012Date of Patent: December 31, 2013Assignee: Renesas Electronics CorporationInventors: Yasuhito Kurokawa, Kunihiko Tani
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Patent number: 8619101Abstract: Methods and data processing systems are disclosed for adjusting a white point of a display. In one embodiment, a method includes setting the display to a first state. The method further includes providing a two dimensional array of white points to the display. The method further includes selecting a target white point from the two dimensional array of white points to visually match a desired white color of a medium. The method further includes encoding the selected target white point as two simultaneously captured variables. The method further includes deriving a second state of the display that corresponds to the target white point.Type: GrantFiled: June 4, 2007Date of Patent: December 31, 2013Assignee: Apple Inc.Inventors: Gabriel G. Marcu, Steve Swen
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Publication number: 20130342430Abstract: A color sequential image method for displaying images using two color fields includes analyzing and sorting percentages of a plurality of colors constituting an input color image, in which a first color possesses a most percentage, a second color possesses a middle percentage, and a third color possesses a third percentage. The method further includes forming a first color field image according to the first color and the third color, and a second color field image according to the second color and the third color.Type: ApplicationFiled: November 19, 2012Publication date: December 26, 2013Applicants: NATIONAL CHIAO TUNG UNIVERSITY, WISTRON CORP.Inventors: Yi-Pai Huang, Chi-Wen CHANG, Fang-Cheng LIN, Han-Ping SHIEH, Meng-Chao KAO, Hui-Chen LIN, Szu-Fen CHEN
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Patent number: 8614720Abstract: A display device includes a driving device, which includes a signal controller which receives an input image signal and an input control signal and outputs an image data and a data control signal; a reference voltage generator which generates a first reference voltage and a second reference voltage; and a data driver which receives the image data and the data control signal from the signal controller and outputs a data voltage. The data control signal includes a first color gamma control signal, a second color gamma control signal, and a third color gamma control signal. The data driver includes a reference gamma voltage generator which receives the first reference voltage and the second reference voltage from the reference voltage generator, receives the first color, second color, and third color gamma control signals from the signal controller, and generates a reference gamma voltage according to color information of the image data.Type: GrantFiled: September 28, 2011Date of Patent: December 24, 2013Assignee: Samsung Display Co., Ltd.Inventors: Ock Jin Kim, Sang-Gon Lee, Yong-Soon Lee, Chang Sin Kim
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Publication number: 20130328758Abstract: A differential subpixel of a display apparatus includes a first drive transistor and a second drive transistor. The first drive transistor has a first drive signal with a first polarity and the second drive transistor has a second drive signal with a second polarity. The first polarity is opposed to the second polarity and the first drive signal and the second drive signal are configured to be driven with complementary differential signals.Type: ApplicationFiled: June 8, 2012Publication date: December 12, 2013Applicant: Apple Inc.Inventors: David A. STRONKS, Hopil BAE