Color Patents (Class 345/88)
-
Patent number: 8884856Abstract: A video system including a sequential color liquid crystal display with a panel of pixels arranged in rows and columns, including a mechanism that controls unit brightness levels on each pixel in the panel called grey levels, each grey level corresponding to a video information received at the input. The grey level controlled on a pixel is achieved with an analog voltage that varies monotonously depending on the row associated with the pixel and/or a color to be displayed.Type: GrantFiled: December 6, 2006Date of Patent: November 11, 2014Assignee: ThalesInventors: Hugues Lebrun, Thierry Kretz
-
Patent number: 8884992Abstract: Disclosed is a liquid crystal display device and a method for compensating the color temperature of the liquid crystal display device. The timing controller according to the present disclosure, modulates the digital video data input from the host computer, compensates the shifted color temperature caused during the data modulation, and then sends the modulated and compensated digital video data to the data driving circuit.Type: GrantFiled: July 1, 2010Date of Patent: November 11, 2014Assignee: LG Display Co., Ltd.Inventors: Taewook Lee, Hyoungsik Kim
-
Patent number: 8879006Abstract: There is provided with a color mixing section for mixing yellow to red or green, when red or green is displayed by a liquid crystal television including a liquid crystal panel that has a color filter for four primary colors for red, green, blue and yellow, a backlight that emits light to the liquid crystal panel, and a television signal processing section that converts an inputted color video image signal into signals representing red, green, blue and yellow regarding a color video image.Type: GrantFiled: March 12, 2012Date of Patent: November 4, 2014Assignee: Sharp Kabushiki KaishaInventors: Hironori Shimoda, Mihoko Watanabe
-
Patent number: 8872864Abstract: A control unit performs calibration when a determining unit determines that an absence condition of an operator is satisfied. Calibration is performed to a whole or part of brightness, a white point (gain), gamma (gradation), and primary colors (red, blue, and green colors). The control unit stores a correction amount by calibration in a storage unit, measures the (corrected) calibrated brightness or color tone by using an optical sensor, and stores the measured final measurement result in the storage unit as a corrected measurement value. After performing calibration or when the determining unit determines that a presence condition of the operator is satisfied, a profile generating unit generates color space information.Type: GrantFiled: April 12, 2010Date of Patent: October 28, 2014Assignee: Eizo Nanao CorporationInventors: Atsuyoshi Deyama, Junro Yonemitsu, Kensuke Nagashima, Takafumi Kawakami
-
Patent number: 8872863Abstract: In a first subframe period, light sources of a first region and a third region emit lights at the same time; light sources of a second region and a fourth region emit no light at the same time, in which light emission of different colors is performed in the first region and the third region. In a second subframe period, light sources of the second region and the fourth region emit lights at the same time; light sources of the first region and the third region emit no light at the same time, in which light emission of different colors is performed in the second region and the fourth region. The first region and the third region are separated from each other with the second region interposed therebetween; and the second region and the fourth region are separated from each other with the third region interposed therebetween.Type: GrantFiled: June 22, 2011Date of Patent: October 28, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yoshiharu Hirakata, Shunpei Yamazaki
-
Patent number: 8872743Abstract: The present invention provides a liquid crystal display device including a multiple primary color panel capable of improving the display quality in the vicinity of a monochromatic color, and a control method therefor. The present invention provides a liquid crystal display device that performs display by input thereto of image signals for three colors from outside. The liquid crystal display device includes a liquid crystal display panel and a backlight. A plurality of pixels each including picture elements of four colors or more are formed in a display region of the liquid crystal display panel. Each pixel includes picture elements of three colors, provided with color filters having colors corresponding to the respective colors of the image signals, and at least one picture element of other color(s), provided with a color filter having a color corresponding to a color other than the colors of the image signals.Type: GrantFiled: July 23, 2010Date of Patent: October 28, 2014Assignee: Sharp Kabushiki KaishaInventor: Tetsuya Ueno
-
Patent number: 8872742Abstract: This invention relates to a liquid crystal display device and its driving method for improving a visual picture quality. A liquid crystal display device according to an embodiment includes a liquid crystal display panel where plural pixels composed of sub-pixels arranged in a fixed pattern are arranged by the unit of one horizontal line; a timing controller for controlling the gray level realization of digital data inputted from a system; and a data drive circuit that differently realigns a data pattern of the digital data by the unit of one horizontal line for each k horizontal period, that converts the digital data of the realigned data pattern into analog data voltages, and that makes the analog data voltages, which are buffered in accord with the realigned data pattern, in accord with an arrangement pattern of the sub-pixels constituting each pixel to supply the analog data voltages to each pixel.Type: GrantFiled: August 29, 2012Date of Patent: October 28, 2014Assignee: LG Display Co., Ltd.Inventors: Jin Chul Choi, Sun Young Kim
-
Publication number: 20140313425Abstract: A display system, having an emissive body, varying light emitted from the surface so that different temporally adjacent time periods see the emissive body outputting different primary colors. A liquid crystal display can then modulate the different primary colors that have been output at different times. In one embodiment, the different times modulate red green and blue colors. In another embodiment, the different times modulate red green blue and white colors. The emissive body can be a FIPEL type device. Light can be both color varied and also color temperature controlled. The light color is changed by changing a frequency used to drive the body.Type: ApplicationFiled: April 19, 2013Publication date: October 23, 2014Applicant: Vizio IncInventor: Matthew McRae
-
Patent number: 8866804Abstract: A first transistor comprises a gate coupled to a first scan line, a source coupled to a data line, and a drain coupled to the first storage capacitor. The second transistor comprises a gate coupled to a second scan line, a source coupled to the first storage capacitor, and a drain coupled to the second storage capacitor. A first polarity voltage applied on the data line is stored into the first storage capacitor during a first time period which the first transistor is turned on. The first storage capacitor discharges due to a connection between the first capacitor and the second capacitor during a second time period which the second transistor is turned on. By using such driving method, the difference in voltage between the liquid crystal capacitor and a common voltage is reduced from charge sharing for improving a color washout effect of the LCD panel.Type: GrantFiled: June 1, 2011Date of Patent: October 21, 2014Assignee: Shenzhen China Star Optoelectronics Technology, Co. Ltd.Inventor: Chenghung Chen
-
Patent number: 8860694Abstract: A light sensing assembly includes a first light guide plate (“LGP”), a light-emitting diode (“LED”) part, an infrared LED part, a second LGP and a first sensor array. The LED part is at a side portion of the first LGP and emits white lights of a displayed image. The infrared LED part emits infrared lights of a detected touch. The second LGP is below the first LGP. The second LGP guides a path of the infrared lights of the detected touch inputted in accordance with a touch operation. The first sensor array is at a side portion of the second LGP and senses the reflected infrared lights which are guided by the second LGP.Type: GrantFiled: September 22, 2011Date of Patent: October 14, 2014Assignee: Samsung Display Co., Ltd.Inventors: Seong-Mo Hwang, Moon-Gyu Lee, Hyeon-Yong Jang, Jae-Jin Pyun, Il-Ho Lee, Moon-Jung Baek
-
Patent number: 8860642Abstract: The invention relates to a display and a weighted dot rendering method. The display comprises a plurality of pixel groups, each pixel group comprising a plurality of dots arranged in a predetermined identical matrix form, each pixel group having at least one first color dot, at least one second color dot and at least one third color dot, the pixel groups arranged in a matrix manner so as to form the display, wherein each color dot has a plurality of sides adjacent to the other dots with different color, and each color dot represents a luminance and a chrominance of a corresponding full color pixel data by grouping with neighboring dots to form a plurality of overlapping full color dynamics pixel groups.Type: GrantFiled: July 5, 2011Date of Patent: October 14, 2014Assignee: VP Assets LimitedInventor: Gia Chuong Phan
-
Patent number: 8860911Abstract: An image display device, includes a light and an array substrate having a plurality of sub-pixel areas and corresponding to a plurality of color filters. A liquid crystal layer includes a plurality of liquid crystal molecules, wherein the liquid crystal molecules corresponding to different color filters have different derangements, and a light transmittance per unit area in the peripheral region of the array substrate is equal to or less than a light transmittance per unit area in the display region of the array substrate.Type: GrantFiled: June 13, 2013Date of Patent: October 14, 2014Assignee: Innolux CorporationInventors: Kaoru Kusafuka, Mitsuru Ikezaki
-
Publication number: 20140300653Abstract: According to various embodiments of the invention, gamma curves for multiple pixel groups can be calibrated using look-up tables or by using reference voltage groups provided by gamma voltage generators so that the pixels can display multiple images with correct gray levels at different view angles. Therefore, color shift can be avoided or lessened without necessarily using extra circuitry on the display panel. Also, any related light transmittance or light utilization efficiency reduction may be decreased or eliminated.Type: ApplicationFiled: June 24, 2014Publication date: October 9, 2014Inventor: Ming-Feng Hsieh
-
Publication number: 20140300654Abstract: The present invention aims to provide a driving control circuit of a display device, which includes a plurality of data driving circuits each having a timing controller merged with a source driver. The data driving circuits are configured to synchronize data of the respective data driving circuits and compensate for a difference between a data enable signal and a gate output enable signal, when an abnormal display signal is received.Type: ApplicationFiled: February 25, 2014Publication date: October 9, 2014Applicant: SILICON WORKS CO., LTDInventors: Young-Gi KIM, Hye-Lan Kim, Na-Ra Hong, Joon-Ho Na
-
Patent number: 8854401Abstract: Present techniques involve methods and systems for reducing edge discoloration in a display. In one embodiment, the first and last columns of a display are dimmed by adjusting a black mask or reducing transmittance of the relevant pixels. Further, the first and last columns of a display may be entirely covered by the black mask. In some embodiments, using a coupling extrusion on a neighboring sub-pixel can be used to control the coupling between the neighboring sub-pixels to reduce edge discoloration. Display software may also be used to reduce edge discoloration. For example, software may automatically reduce the brightness of the first and last column. In some embodiments, software may be used to detect edges of objects within the display area. Edges of an object are detected, and the last sub-pixel of the background and/or the first sub-pixel of the object are compensated.Type: GrantFiled: December 28, 2010Date of Patent: October 7, 2014Assignee: Apple Inc.Inventors: Cheng Chen, Shih Chang Chang, Mingxia Gu, John Z. Zhong
-
Patent number: 8850714Abstract: A chromaticity correction device corrects chromaticity of a video signal displayed on a display panel of a display device to correspond to a change in a luminance value of the display panel. The chromaticity correction device includes a luminance detection unit which detects the luminance value, a backlight driving level detection unit which detects a backlight driving level, a temperature detection unit which detects an internal device temperature or an ambient temperature, a reference luminance value calculation unit which estimates a reference luminance value in a characteristic of an initial state, a chromaticity calculation unit which obtains a chromaticity change amount of white point chromaticity and estimated white point chromaticity that is an estimated value of current white point chromaticity, a chromaticity correction value calculation unit which obtains a chromaticity correction value and a chromaticity correction circuit which corrects the chromaticity of the video signal.Type: GrantFiled: September 30, 2011Date of Patent: October 7, 2014Assignee: NEC Display Solutions, Ltd.Inventor: Katsuyuki Matsui
-
Publication number: 20140292825Abstract: The present invention relates to a multi-layer display apparatus and a display method using the same, and more particularly, relates to a multi-layer display apparatus for adjusting a color value and an object size in an overlapping part so as to maintain an original color when a background image displayed on a general LCD panel and an exhibition image displayed on a transparent LCD panel are superimposed in a structure where the general LCD panel and the transparent LCD panel are disposed in order, and a display method using the same.Type: ApplicationFiled: March 28, 2013Publication date: October 2, 2014Applicants: Korea Data Communications Corporation, T1 Systems CO., LTD., PRIME RESOURCE CORPORATIONInventors: Tae Sub Kim, Jae Hoon Kim, Sun Cheol Jeong
-
DISPLAY DEVICE, ELECTRONIC APPARATUS, DRIVING METHOD OF DISPLAY DEVICE, AND SIGNAL PROCESSING METHOD
Publication number: 20140292840Abstract: According to an aspect, a display device includes: an image display panel; and a plurality of signal processing circuits that are responsible for respective regions in the image display panel, that convert an input value of an input HSV color space of an input signal to each of their own responsible regions into an extension value of an extended HSV color space to generate an output signal of the extension value for the image display panel. The signal processing circuits decide an extension coefficient ?A for the image display panel in its entirety in a cooperative manner. The signal processing circuit, regarding its own responsible region, calculates an output signal of each of a first sub-pixel, a second sub-pixel, third sub-pixel, and a fourth sub-pixel.Type: ApplicationFiled: March 5, 2014Publication date: October 2, 2014Applicant: Japan Display Inc.Inventors: Tsutomu Harada, Akira Sakaigawa, Naoyuki Takasaki, Fumitaka Goto -
Publication number: 20140292837Abstract: Embodiments of the present invention relate to a color temperature tuning method, a color temperature tuning apparatus, and a display apparatus. The color temperature tuning method includes the steps of: matching an input color temperature signal with a color temperature value in the color temperature lookup table, and extracting a current signal corresponding to the color temperature value matching with the input color temperature signal from the color temperature lookup table; and controlling a light emitting device to emit light according to the current signal. According to embodiments of the present invention, intermediate calculation process is omitted and time for tuning the color temperature is shorten. Currents flowing through the blue and green light emitting elements are controlled to emit lights to excite red fluorescent powder, so that the LED emits lights having various color temperatures, and tuning accuracy of the color temperature and user experience are improved.Type: ApplicationFiled: May 27, 2013Publication date: October 2, 2014Applicants: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Lili Jia, Xiuyun Chen, Lingyu Sun, Hongli Zhu, Yu Zhang
-
Patent number: 8847864Abstract: A color flat display panel and a corresponding color flat display device are disclosed. The color flat display panel comprises a plurality of pixels, a plurality of scanning lines and a plurality of data lines. Each of the pixels comprises a first color sub-pixel, a second color sub-pixel and a third color sub-pixel, each of the scanning lines is electrically connected with a corresponding row of sub-pixels in a row direction, and each of the data lines is electrically connected with a corresponding column of sub-pixels in a column direction. The first color sub-pixel, the second color sub-pixel and the third color sub-pixel of each of the pixels are arranged in the column direction so that the corresponding row of sub-pixels electrically connected with each of the scanning lines are sub-pixels of a same color. As sub-pixels of each row are of a same color, each sub-pixel can receive a Gamma curve of the same color, thus obviating the color-cross.Type: GrantFiled: December 5, 2011Date of Patent: September 30, 2014Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventors: Yong Zhang, Dong-Sheng Guo
-
Patent number: 8848003Abstract: Provided is a method of chromaticity adjustment of a display device including a drive circuit for generating a gray-scale signal corresponding to a video signal input from an external portion and supplying the gray-scale signal to a plurality of pixels, the method including: measuring chromaticity coordinates of an image displayed on the display device; determining whether the measured chromaticity coordinates are chromaticity coordinates within a first region that does not need a chromaticity correction or chromaticity coordinates within a second region that needs the chromaticity correction; determining, if the measured chromaticity coordinates are the chromaticity coordinates within the second region, which of a plurality of correction regions obtained by dividing the second region the chromaticity coordinates fall within; correcting the gray-scale signal corresponding to the video signal by using a chromaticity correcting portion corresponding to the determined one of the plurality of correction regions;Type: GrantFiled: September 22, 2011Date of Patent: September 30, 2014Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Yuu Takahashi, Norio Nakanishi
-
Publication number: 20140285539Abstract: According to an aspect, a display device includes: an image display panel; a color conversion device including a signal processing unit and a signal output unit; a planar light-source device; and a light-source-device control unit. The signal processing unit includes a color conversion circuit that converts an input signal in a reference color area into a converted input signal generated in a definition color area where a chromaticity point of at least one of a first color, a second color, and a third color is inside of a reference color area, and a four-color generation circuit that generates an output signal and a light-source-device control signal from the converted input signal. The signal output unit outputs the drive signal to each sub-pixel based on the output signal. The light-source-device control unit outputs a drive voltage for emitting white light on the planar light-source device based on the light-source-device control signal.Type: ApplicationFiled: March 24, 2014Publication date: September 25, 2014Applicant: JAPAN DISPLAY INC.Inventors: Tae Kurokawa, Akira Sakaigawa, Masaaki Kabe, Masashi Mitsui, Kojiro Ikeda, Fumitaka Goto, Amane Higashi, Hirokazu Tatsuno, Toshiyuki Nagatsuma, Hiroki Uchiyama
-
Publication number: 20140267470Abstract: The present invention proposes a color adjustment device, a method for adjusting color and a display, which first determines a set of three stimulus values displaying as white in the CIE 1931 XYZ color space, and then converts the tristimulus value into a luminance value and two chromaticity values based on the CIE 1976 L* a* b* color space, and determines a set of target luminance value and two target chromaticity values of each and every grayscale respectively according to the set of luminance value and two chromaticity values, and finally converts the set of target luminance value and two target chromaticity values of each and every grayscale into target stimulus sets in accordance with the CIE 1931 XYZ, each grayscale corresponds to a target set of stimulus values. By this way, the color values of whites of all grayscales belong to the same hue.Type: ApplicationFiled: December 8, 2011Publication date: September 18, 2014Applicant: Shenzhen China Star Optoelectronics Technology Co. Ltd.Inventor: Chih-tsung Kang
-
Publication number: 20140267452Abstract: A signal generation circuit of an electro-optical device includes a generation unit that generates correction data corresponding to each pixel circuit based on input image data, a specification unit that, when a value which denotes a difference of two pieces of correction data corresponding to two pixel circuits adjacent to each other is equal to or greater than a predetermined threshold, specifies the two pixel circuits as boundary pixel circuits, an updating unit that generates updated correction data by modifying each value of a predetermined number of pieces of correction data corresponding to a predetermined number of pixel circuits including at least one of the boundary pixel circuits so as to be a value between two values indicated by the two pieces of correction data corresponding to the boundary pixel circuits.Type: ApplicationFiled: March 5, 2014Publication date: September 18, 2014Applicant: Seiko Epson CorporationInventors: Junichi Wakabayashi, Hiroyuki Hosaka, Hiroaki Ichimura
-
Publication number: 20140267454Abstract: There is provided an image processing method for applying color conversion to an input image and outputting the image, this method including: acquiring profile information concerning display characteristics of a display apparatus including a backlight unit, a control unit configured to control a light emission amount of the backlight unit, and a display panel configured to modulate light from the backlight unit, the display characteristics being changed according to the light emission amount of the backlight unit; color converting the input image into an image in a color space of the display apparatus in use of the acquired profile information in the acquiring; and outputting the image being subjected to the color conversion.Type: ApplicationFiled: March 10, 2014Publication date: September 18, 2014Applicant: CANON KABUSHIKI KAISHAInventor: Shunsuke Ikenishi
-
Publication number: 20140267446Abstract: A display system, having an emissive body, emitting light in a way that is color temperature controllable. The light emission can be from zones. The emissive body can be a FIPEL type device with a first transparent conductive coating over a light emitting substrate. The zones are each separately controllable for color temperature.Type: ApplicationFiled: March 16, 2013Publication date: September 18, 2014Applicant: VIZIO INCInventors: Matthew McRae, William Pat Price, Ken Lowe
-
Publication number: 20140266995Abstract: A display apparatus, includes: a display panel including: gate lines extended in a first direction, data lines extended in a second direction, sub-pixels, and a first color filter, a second color filter, and a substantially colorless portion sequentially arranged in the first direction in one-to-one correspondence with the sub-pixels; and a light providing unit configured to supply a first color of light and a second color of light different from the first color of light to the display panel in association with a first sub-frame and a second sub-frame, respectively. At least some of the sub-pixels are grouped into a sub-pixel group including an “a”דb” matrix arrangement, the sub-pixel group being connected to an amount “a” of the gate lines and an amount “b” of the data lines, and “a” and “b” are positive integers greater than zero and “b” is greater than “a.Type: ApplicationFiled: October 10, 2013Publication date: September 18, 2014Applicant: Samsung Display Co., Ltd.Inventors: Jaehyun Cho, Sung-Jin Hong, Jae-Byung Park
-
Publication number: 20140266985Abstract: A system and method for reduction of chromatic aberration for an image projection system utilizes a computer system that processes a parametric equation that defines the physical parameters of a projection lens unit. Based on the parametric equation, the divergence or refractive induced bending of light rays passing through the lens unit is identified. This divergence data is then utilized to generate offset values that are transferred to a control unit of a digital image display unit so as to offset, or otherwise space apart, the position of specific color sub-pixels by an appropriate amount to compensate for the divergence or bending effects of the lens unit. The applied offset causes the color light rays emitted by the color pixels to converge or otherwise join after passing through the lens, thus eliminating, or otherwise minimizing the chromatic aberration associated with the projected image.Type: ApplicationFiled: March 15, 2013Publication date: September 18, 2014Applicant: LOCKHEED MARTIN CORPORATIONInventors: GREGORY A. HARRISON, David Alan Smith, Scott Pottenger
-
Patent number: 8836624Abstract: A liquid crystal display (LCD) device includes a pixel array including a plurality of pixels configured to display an image. The plurality of pixels respectively include a first subpixel configured to display first color image data, and a second subpixel configured to display second and third color image data. The LCD device may further include a backlight configured to emit the first, second, and/or third colors of light, and a backlight controller. The backlight controller may be configured to activate the backlight to emit the first and second colors of light at a same time to generate a first image component including a combination of the first color image data and the second color image data, and to separately emit the third color of light at a different time than the first and second colors of light to generate a second image component including the third color image data. The pixel array may be configured to display the first and second image components to provide a single image frame.Type: GrantFiled: August 30, 2007Date of Patent: September 16, 2014Assignee: Cree, Inc.Inventors: John Roberts, Chenhua You
-
Patent number: 8836735Abstract: Under management by a main microcomputer, an LED controller performs, along at least two directions within a plane of planar light formed by LEDs arranged in a matrix, brightness correction processing for adjusting the distribution of brightness of the planar light on light source color video signals to convert them into light source color video signals.Type: GrantFiled: November 5, 2009Date of Patent: September 16, 2014Assignee: Sharp Kabushiki KaishaInventors: Kohji Fujiwara, Takayuki Murai, Hideki Ichioka
-
Publication number: 20140253422Abstract: This liquid crystal display device (100) includes a pixel defined by a plurality of subpixels that includes red, green, blue and yellow subpixels (R, G, B, Ye). As long as the sum of respective luminances of all of the subpixels but the blue subpixel (B) falls within the range of 0% to 50% while the color displayed by the pixel is changing from the color blue in which the blue subpixel (B) is at the highest grayscale level and the other subpixels are at the lowest grayscale level into the color white in which all of those subpixels are at the highest grayscale level substantially without changing its hue, the yellow subpixel (Ye) starts to increase its grayscale level at a different timing, and/or has its grayscale level increased at a different ratio with respect to an increase in the pixel's luminance, from the red and green subpixels (R, G) do.Type: ApplicationFiled: August 28, 2012Publication date: September 11, 2014Applicant: SHARP KABUSHIKI KAISHAInventors: Kazunari Tomizawa, Yuichi Yoshida, Tomohiko Mori, Makoto Hasegawa
-
Patent number: 8830151Abstract: Provided are a backlight unit capable of improving light efficiency and acquiring a high-luminance image by implementing a color image without using a color filter having the large light loss and a liquid crystal display including the same. The backlight unit includes: a white light source generating white light, a light guide plate into which the white light is inputted, a blue phosphor sheet formed above the light guide plate and transmitting the white light, and a multi-color phosphor sheet formed on the same plane above the blue phosphor sheet and including a plurality of red phosphor layers, green phosphor layers, and transparent layers which transmit the light transmitted through the blue phosphor sheet.Type: GrantFiled: February 7, 2012Date of Patent: September 9, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Dong Pyo Kim, Kyu Ha Baek
-
Publication number: 20140247289Abstract: An image processing method includes: receiving an input image signal (IIS); doubling the IIS into frames; determining a TGM mode to control an order in which gamma curves (GC) are to be applied to the doubled IIS, the GCs including first and second GCs; applying the GCs to the doubled IIS based on the TGM mode to generate a doubled, TGM-processed image signal (DTIS); correcting the DTIS to generate a corrected image signal (CIS); and dither-processing the CIS to generate an output image signal. The dither-processing of the CIS includes: performing dither-processing by sequentially applying dithering patterns (DP) of a first DP set to the CIS in association with first ones of the frames with respect to the first GC, and performing the dither-processing by sequentially applying DPs of a second DP set to the CIS in association with second ones of the frames with respect to the second GC.Type: ApplicationFiled: August 27, 2013Publication date: September 4, 2014Applicant: Samsung Display Co., Ltd.Inventors: Geun Jeong PARK, Nam-Gon CHOI, Jung-Taek KIM, Yong Jun JANG, Jin-Woong JEONG, Cheol Woo PARK
-
Patent number: 8823753Abstract: A display driver circuit configured to be shared by three grey-scale voltage generators to be respectively used with red (R), green (G) and blue (B) colors. In particular, two of the three grey-scale voltage generators share first and second resistor strings, gamma voltage selectors, and gamma adjustment buffers provided in the other grey-scale voltage generator, thereby reducing the size and power consumption of the display driver circuit. Also, when only a single grey-scale voltage is output, it is possible to deactivate the grey-scale voltages provided by two of the grey-scale generators and further reduce power consumption.Type: GrantFiled: March 3, 2010Date of Patent: September 2, 2014Assignee: Samsung Electronics Co., LtdInventors: In-Suk Kim, Jae-Goo Lee, Jae-Hyuck Woo
-
Patent number: 8823615Abstract: A driving method includes sensing illuminance of ambient light determining a first contrast ratio based on the sensed illuminance, determining a second contrast ratio and a relative ratio of the contrast ratio, determining a gradient of a compensation gamma curve using the relative ratio, determining an average gray of input data signals, and determining the compensation gamma curve.Type: GrantFiled: October 31, 2007Date of Patent: September 2, 2014Assignee: Samsung Display Co., Ltd.Inventors: Ki-Chan Lee, Dong-Won Park
-
Patent number: 8823618Abstract: A liquid crystal display includes a liquid crystal display panel for displaying picture images, and a color correction unit. Upon receipt of raw RGB picture data corresponding to raw RGB gamma curves, the color correction unit generates corrected RGB picture data based on values over a predetermined imaginative gamma curve established in accordance with the characteristic of the liquid crystal display panel. The color correction unit stores values over corrected RGB gamma curves corresponding to the corrected picture data, and gamma-corrects the raw RGB picture data based on values over the stored corrected RGB gamma curves, thereby displaying the picture images.Type: GrantFiled: June 25, 2010Date of Patent: September 2, 2014Assignee: Samsung Display Co., Ltd.Inventors: Seung-Woo Lee, Jong-Seon Kim, Su-Hyun Kwon
-
Patent number: 8823616Abstract: A liquid crystal display device includes; gate lines disposed on a display region, data lines disposed on the display region, wherein the data lines intersect with, and are insulated from, the gate lines, a gate driver which drives the gate lines, a plurality of data drivers which generate a data voltage from an input power source voltage and supply the data voltage to the data lines, and a power source voltage supplying unit which supplies different power source voltages to each of the data drivers according to a distance of each data driver from the gate driver.Type: GrantFiled: October 31, 2007Date of Patent: September 2, 2014Assignee: Samsung Display Co., Ltd.Inventors: Hyoung-wook Kim, Min-sung Choi, Seung-ho Baek, Sang-youn Kim, Byoung-haw Park, Ji-eun Jang, Cheal-gi Kim
-
Patent number: 8823617Abstract: A liquid crystal display apparatus includes a feature amount generator configured to generate a feature amount based on the number of pixel pairs that satisfy a correspondence relationship between a gradation value of a target pixel and a gradation value of a surrounding pixel around the target pixel for a image represented by an input image signal, a processor configured to provide processing so as to set a correction value that reduces a dynamic range of a gradation value of the input image signal when the feature amount is larger than a first threshold, and so as not to set the correction value when the feature amount is equal to or smaller than the first threshold, and a liquid crystal driver configured to drive a liquid crystal display element based on the input image signal that has been corrected by the correction value.Type: GrantFiled: March 20, 2012Date of Patent: September 2, 2014Assignee: Canon Kabushiki KaishaInventor: Teppei Kurosawa
-
Patent number: 8823725Abstract: A system, method, and computer program product are provided for determining a duty cycle for a pixel (e.g. of alternating pixel values to achieve an average pixel color). In use, a first value of a sub-color component bit of a pixel is determined. Additionally, a second value for the sub-color component bit of the pixel is calculated. Further, a duty cycle for alternating between the first value and the second value is determined (e.g. which when applied at normal display frame rate may achieve an average color).Type: GrantFiled: December 17, 2008Date of Patent: September 2, 2014Assignee: NVIDIA CorporationInventors: David Wyatt, Daniel William Nolan, Michael A. Ogrinc
-
Publication number: 20140240367Abstract: A luminance adjustment part includes a luminance determination part and a data compensation part. The luminance determination part may determine a control value for controlling luminance of a backlight assembly using linear image data that has a linear luminance profile and is generated by performing a de-gamma process on a first copy of input image data that has a nonlinear luminance profile. The compensation part may compensate pixel data that corresponds to pixels of a display panel using the control value, the pixel data being generated using a second copy of the input image data. Thus, color distortion of a displayed image as perceived by a viewer may be minimized when power consumption of a display apparatus that includes the display panel is decreased.Type: ApplicationFiled: July 9, 2013Publication date: August 28, 2014Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: Jung-Taek KIM, Cheol-Woo PARK, Yun-Ki BAEK, Kyoung-Ju SHIN, Hee-Soon JEONG
-
Patent number: 8817056Abstract: A liquid crystal display (LCD) capable of converting input RGB data into RGBW data to provide the RGBW data to a panel. The LCD simultaneously controls the light level of a backlight and the amount of the RGBW data to prevent RGBW picture quality from being damaged in pure color data, minimizes the power consumption of the LCD, and applies the above to a CPU interface method as well as an RGB interface method.Type: GrantFiled: June 29, 2010Date of Patent: August 26, 2014Assignee: Samsung Display Co., Ltd.Inventor: Jong-Woong Park
-
Publication number: 20140232756Abstract: A image signal processing method of a liquid crystal display according to an exemplary embodiment of the present invention includes: receiving a previous image signal and a current image signal as two sequential input image signals; performing a first correction (DCC) and a doubling for the current image signal to generate a correction image signal comprising a plurality of doubled frames for the current image signal; and post-processing the portion of the plurality of doubled frames to generate a final correction image signal.Type: ApplicationFiled: August 12, 2013Publication date: August 21, 2014Inventors: Nam-Gon CHOI, Yong Jun Jang, Jung-Won Kim, Geun Jeong Park, Ji-Woong Jeong, UK Chul Choi, Joon-Chul Goh, Cheol Woo Park, Bong Hyun You
-
Patent number: 8810493Abstract: To provide a display device which can reduce driving frequency of a controller and a driver for inputting a signal to the display device and increase brightness of a screen without increasing the driving frequency. The display device includes: a display screen having a plurality of pixels provided by corresponding to intersection points between scan lines and data lines; a scan line drive circuit which drives the scan lines; a data line drive circuit which drives the data lines; and a display device body having an image display control device which operates the drive circuit so as to sequentially and repeatedly display two or more types of images. The image display control device causes the scan line drive circuit to simultaneously select two or more scan lines for at least one type of image among the two or more types of images sequentially displayed.Type: GrantFiled: February 15, 2008Date of Patent: August 19, 2014Assignee: NEC CorporationInventors: Kazunori Kimura, Masao Imai
-
Patent number: 8810607Abstract: The invention relates to a flexible display comprising a first flexible layer configured to comprise pixels 5 of the flexible display, a second flexible layer superposed on the first flexible layer, which second flexible layer comprises a color filter with a plurality of color elements 1, 2, 3, 4 associated with said pixels, wherein the pixels comprise color sub-pixels 1a, 2a, 3a, 4a, the color elements and/or color sub-pixels being discontinuously arranged to counteract misalignment between respective color sub-pixels and color elements. The color elements 1, 2, 3, 4 are arranged to substantially overlap respective sub-pixels 1a, 2a, 3a, 4a whereby the buffer zones 6a, 6b, 6c, 6d are arranged to overlap a portion of said sub-pixels as well. The invention further relates to a method of manufacturing a flexible display.Type: GrantFiled: August 22, 2008Date of Patent: August 19, 2014Assignee: Creator Technology B.V.Inventors: Erik van Veenendaal, Nicolaas Aldegonda Jan Maria van Aerle, Hjalmar Edzer Ayco Huitema
-
Publication number: 20140225934Abstract: A display control method used in a display apparatus with multiple colored light sources, wherein the colored light sources emit different color lights, the color cast sub frame in the frame of the display apparatus tends to a specific color, and the display control method comprises for the frame, increasing the specific color light source of the frame and decreasing the other color light source of the frame. For the white-tending sub frame of the frame, sub-pixel values of the specific color are decreased according to the increasing level of the specific color light source to generate modified sub-pixel values. For the white-tending frame, the modified sub-pixel values and the sub-pixel values of the other colors are increased according to the decreasing level of the other colored light sources.Type: ApplicationFiled: February 7, 2014Publication date: August 14, 2014Inventor: HUNG-TA LIU
-
Publication number: 20140225819Abstract: Data lines are connected to pixels arranged on both sides of the data lines respectively, a cth gate line and a (c+1)th gate line are connected respectively to pixels arranged between the cth gate line and the (c+1)th gate line alternately, in the case of displaying an image at a Nth frame, the first gate line driver circuit and the second gate line driver circuit supply the gate signal to the cth gate line and the (c+1)th gate line in this order, and in the case of displaying an image at a (N+1)th frame, the first gate line driver circuit and the second gate line driver circuit supply the gate signal to the (c+1)th gate line and the cth gate line in this order.Type: ApplicationFiled: February 3, 2014Publication date: August 14, 2014Applicant: Japan Display Inc.Inventors: Takahiro ONUMA, Kenji Harada, Satoshi Maruyama
-
Patent number: 8803775Abstract: A motion image data sequence, a method for generating the sequence, and a display device using the sequence are provided. The display device includes an image data input device and an image data processor. The image data input device transmits an initial image data to the image data processor. The image data processor inserts a mask frame between a first timing image frame and a third timing image frame to generate an output image data sequence. The mask frame includes a plurality of mask units and a plurality of image units. The mask units and the image units are disposed in an array form.Type: GrantFiled: January 9, 2008Date of Patent: August 12, 2014Assignee: Qisda CorporationInventors: Chang-Ling Yang, Shen-De Yu
-
Publication number: 20140218413Abstract: A pixel includes a first electrode, a second electrode and a third electrode. The first electrode and the second electrode are formed on a lower substrate. The third electrode is formed on an upper substrate and above a position between the first and second electrodes. Liquid crystals are formed between the upper and lower substrates. A method for driving the pixel includes providing a first data voltage to the first electrode, providing a second data voltage to the second electrode, and providing a common voltage to the third electrode. The common voltage is substantially the mean value of the first and second data voltages.Type: ApplicationFiled: July 25, 2013Publication date: August 7, 2014Applicant: AU Optronics Corp.Inventors: Fang-Cheng Yu, Szu-Yu Lin, Cheng-Yeh Tsai
-
Publication number: 20140218411Abstract: The present invention discloses a method and system for improving a color shift of viewing angle of skin color of an LCD screen. The method comprises: comparing the gamma curves and the chromaticity of 0-255 grayscale of front viewing angle and oblique viewing angle of red (R), green (G), and blue (B) after adjusting according to the initial white balance voltage and changing the voltage dividing proportion of the blue-white-balance (BWB) voltage according to the color shift result to make a color shift value of oblique viewing angle of skin color picture of the LCD screen be always within a specification requirement. Through foregoing method, the present invention makes the color shift of skin color of viewing angle of the LCD screen is always within the specification requirement.Type: ApplicationFiled: February 19, 2013Publication date: August 7, 2014Applicant: Shenzhen China Star Optoelectronics Technology Co. Ltd.Inventors: Lixuan Chen, Chih-tsung Kang
-
Patent number: 8797247Abstract: A display panel (320) of an electronic matrix display (205) can have a set of pixel elements (245), a matrix of gate lines (215) and source lines (220), and a set of switches (235). Pixel elements (245) can be of at least three different colors arranged in a repeating pattern to form a matrix of horizontal and vertical rows. In each horizontal row, each pixel element (245) except those on the ends of the horizontal row has two neighboring pixel elements that are a different color than the pixel element (245) and that are a different color than each other. Each unique intersection point of the gate lines (215) and source lines (220) of the matrix can be hardwired to a set of more than one of the pixel elements (245) of the same color.Type: GrantFiled: May 16, 2011Date of Patent: August 5, 2014Assignee: Motorola Solutions, Inc.Inventor: Igor Haskin