Control Means At Each Display Element Patents (Class 345/90)
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Patent number: 8736530Abstract: A method for driving a liquid crystal display (LCD) is disclosed. The LCD includes a common electrode, a pixel electrode, and a liquid crystal layer having a plurality of impurity ions. The method includes: separating the impurity ions toward the common electrode and the pixel electrode to form an internal electric field in the liquid crystal layer; and providing a common voltage for the common electrode, and providing a first compensation voltage and a second compensation voltage for the pixel electrode. The first compensation voltage and the second compensation voltage herein are utilized to compensate the internal electric field so that a difference between the first compensation voltage and the common voltage is equal to a difference between the second compensation voltage and the common voltage. Charge accumulation is formed intentionally, and then the first compensation voltage and the second compensation voltage are provided to correctly display images.Type: GrantFiled: May 11, 2011Date of Patent: May 27, 2014Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventor: Dong-sheng Guo
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Publication number: 20140139416Abstract: An LCD panel includes first to fifth data lines, which are sequentially arranged, intersecting first to third scan lines, which are sequentially arranged, for forming first to fourth pixel units sequentially arranged in an identical row as well as fifth to eighth pixel units sequentially arranged in another row. The first pixel unit and the fourth pixel unit are respectively coupled to the first data line and the fifth data line, and the second pixel unit and the third pixel unit are respectively coupled to the second data line and the fourth data line. The fifth pixel unit and the eighth pixel unit are respectively coupled to the second data line and the fourth data line, and both the sixth pixel unit and the seventh pixel unit are coupled to the third data line.Type: ApplicationFiled: January 27, 2014Publication date: May 22, 2014Applicant: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO ., LTDInventor: Xiu-feng ZHOU
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Publication number: 20140139509Abstract: A pad area of a display panel having a plurality of pixel circuits is provided. The pad area includes at least one driving pad coupled to a data-line or a scan-line, at least one test pad coupled to a first line for transmitting a test signal to the pixel circuits and a second line for transmitting a driving control signal to the pixel circuits, at least one first transistor that controls an electrical coupling between the first line and the test pad, and at least one second transistor that controls an electrical coupling between the second line and the test pad.Type: ApplicationFiled: August 6, 2013Publication date: May 22, 2014Inventor: Dong-Wook KIM
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Patent number: 8730142Abstract: A gate line drive circuit includes: X level shift circuits configured to convert first address signals into second address signals; and a logic circuit configured to drive a selection gate line of N gate lines of a display unit based on the second address signals by supplying a first driving voltage to the selection gate line and by supplying a second driving voltage to non-selection gate lines of the N gate lines other than the selection gate line. X is an integer of 1 or more. N is equal to 2 raised to a power X. The first address signals includes X voltages each of which is a first voltage or a second voltage. The second address signals includes X driving voltages each of which is the first driving voltage or the second driving voltage.Type: GrantFiled: July 30, 2009Date of Patent: May 20, 2014Assignee: Renesas Electronics CorporationInventor: Takayuki Shu
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Publication number: 20140132585Abstract: The present disclosure relates to devices and methods for reducing power consumption of a display. One electronic display includes a first switch coupled between a first gate of a first transistor and a second gate of a second transistor to selectively connect the first gate to the second gate. The display includes a second switch coupled between the second gate of the second transistor and a third gate of a third transistor to selectively connect the second gate to the third gate. The display also includes driving circuitry that controls the first switch to connect the first gate to the second gate to share a first charge between the first and second gates. The driving circuitry also controls the second switch to connect the second gate to the third gate to share a second charge between the second and third gates. Accordingly, power consumption of the display may be reduced.Type: ApplicationFiled: May 9, 2013Publication date: May 15, 2014Applicant: Apple IncInventors: Sang Y. Youn, Hopil Bae, David A. Stronks, Kingsuk Brahma, Taif A. Syed
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Patent number: 8723792Abstract: The disclosure relates to a system for controlling devices and information on a network by hand gestures, and more particularly, to a system for controlling devices and information on a network by hand gestures in which a device or a file to be controlled is selected by a user and a display device is pointed so that information and data can be shared and that various devices can be coupled to each other easily and can be controlled easily. The system for controlling devices and information on a network by hand gestures can remarkably improve the interaction between various input and display devices and a user under a ubiquitous computing environment.Type: GrantFiled: April 3, 2009Date of Patent: May 13, 2014Assignee: Korea Institute of Science and TechnologyInventors: Ji Hyung Park, Hyung Lae Lee, Hee Seok Jeong, Ki Won Yeom, Joong-Ho Lee, Hyun-Jin Shin
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Patent number: 8723781Abstract: A liquid crystal display device is provided, which includes a liquid crystal element including a pixel electrode, a counter electrode, and a liquid crystal disposed between the pixel electrode and the counter electrode, a light source, a comparing circuit configured to compare a potential of the pixel electrode and a reference potential, and supply an output potential in accordance with the result of the comparison, and a control circuit configured to switch turning-on and turning-off of the light source in accordance with the output potential supplied from the comparing circuit.Type: GrantFiled: November 12, 2008Date of Patent: May 13, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Takahiro Fukutome, Takeshi Nishi
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Patent number: 8724173Abstract: A problem of the present invention is to provide a control apparatus, a controlling method, a program, and a recording medium which can print by using at least one or more special colors in addition to four colors of Cyan, Magenta, Yellow, and Black. To solve the above problem, the control apparatus according to the present invention includes analyzing unit that provides command analysis for a CMYK plate and a clear toner plate, generating unit that generates image data of the CMYK plate based on a result of the command analysis by the analyzing unit, and embedding unit that embeds a clear toner attribute obtained by analyzing the clear toner plate in an attribute flag accompanying each of pixels of the image data of the CMYK plate, which is generated by the generating unit.Type: GrantFiled: October 2, 2013Date of Patent: May 13, 2014Assignee: Canon Kabushiki KaishaInventor: Junichi Yamakawa
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Patent number: 8717268Abstract: A display device prevents luminance unevenness that occurs in the case of inversion driving being performed, and performs high quality image display, while selectively scanning two lines of picture elements constituting a single pixel using a single gate wiring, as in the case of multi-primary color image display.Type: GrantFiled: June 9, 2008Date of Patent: May 6, 2014Assignee: Sharp Kabushiki KaishaInventors: Ryohki Itoh, Satoshi Horiuchi, Yuhko Hisada
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Patent number: 8717277Abstract: An apparatus of approximating backlight spread is used in a display to estimate a backlight spread image corresponding to an image after backlight spreading of a plurality of backlight sources arranged in a matrix form. An equalizer receives backlight pulse width modulation signals of the backlight sources for performing an equalization operation and generating corresponding equalization signals. A backlight seed image constructor receives the equalization signals to establish a backlight seed image. A first calculation unit calculates positions corresponding to the backlight seed image based on a backlight spread image. A second calculation unit calculates coordinates of the backlight seed image corresponding to the positions. A distance calculator calculates distance differences between the positions and coordinates of the backlight seed image.Type: GrantFiled: April 11, 2012Date of Patent: May 6, 2014Assignee: Orise Technology Co., Ltd.Inventors: Chih-Kai Chang, Yu-Li Wu
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Patent number: 8717269Abstract: The invention provides an active matrix EL display device which can perform a clear multi-gray scale color display. In particular, the invention provides a large active matrix EL display device at low cost by a manufacturing method which can selectively form a pattern. Power supply lines in a pixel portion are arranged in matrix by the manufacturing method which can selectively form a pattern. Further, capacitance between wirings is reduced by providing a longer distance between adjacent wirings by the manufacturing method which can selectively form a pattern.Type: GrantFiled: August 20, 2013Date of Patent: May 6, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yasunori Yoshida, Hajime Kimura, Shinji Maekawa, Osamu Nakamura, Shunpei Yamazaki
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Patent number: 8711073Abstract: A display system includes a display panel having a plurality of pixel units, each of the pixel units having first and second divided pixel parts; a first driver for applying a first gate signal to the first divided pixel part; and a second driver for applying a second gate signal to the second divided pixel part, wherein the first and second drivers are integrally formed in the display panel and apply the first and second gate signals to be at least partially time-overlapped through independent driving.Type: GrantFiled: July 18, 2008Date of Patent: April 29, 2014Assignee: Samsung Display Co., Ltd.Inventors: Min Cheol Lee, Seung Hwan Moon
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Publication number: 20140111491Abstract: A liquid crystal display device includes a first switching element for supplying a data voltage to a pixel electrode during a first period, a second switching element for supplying a common voltage to an auxiliary electrode during the first period, a third switching element for supplying the data voltage to the auxiliary electrode during a second period subsequent to the first period, a common electrode to which the common voltage is supplied, a liquid crystal capacitor coupled between the pixel electrode and the common electrode, and a storage capacitor coupled between the pixel electrode and the auxiliary electrode. The voltage at the auxiliary electrode changes from the common voltage during the first period to the data voltage during the second period, and a voltage at the pixel electrode changes from the data voltage during the first period to an amplified data voltage during the second period.Type: ApplicationFiled: September 4, 2013Publication date: April 24, 2014Applicant: LG DISPLAY CO., LTD.Inventor: Ju-Young Lee
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Patent number: 8704749Abstract: A display apparatus includes a display panel which receives a light, a backlight which provides the light to the display panel in response to a driving voltage, and a backlight driver which applies the driving voltage to the backlight. The backlight is turned on and off during a communication period to transmit data to an external receiver using visible light communication during the communication period. The backlight driver controls a voltage level of the driving voltage according to a number of turn-on periods of the driving voltage during the communication period.Type: GrantFiled: November 17, 2009Date of Patent: April 22, 2014Assignee: Samsung Display Co., Ltd.Inventors: Tae-Jong Jun, Jongseo Lee, Jooyoung Lee, Soo-Lin Kim, Jung-Suk Han
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Patent number: 8698722Abstract: A display apparatus includes a panel part having a plurality of gate lines, a plurality of data lines, a plurality of pixels, a data driver and a gate driver part. Each pixel of the plurality of pixels includes a first sub-pixel and a second sub-pixel. The first sub-pixel is connected to a first gate line of the plurality of gate lines and the second sub-pixel is connected to a second gate line of the plurality of gate lines. The first sub-pixel and the second sub-pixel are each commonly connected to one data line of the plurality of data lines. The gate driver part is disposed on the panel part and applies a plurality of gate signals to the plurality of gate lines. A current gate signal of the plurality of gate signals is temporally overlapped with a previous gate signal for a predetermined time interval.Type: GrantFiled: June 24, 2008Date of Patent: April 15, 2014Assignee: Samsung Display Co., Ltd.Inventors: Seung-Soo Baek, Yong-Soon Lee, Min-Cheol Lee, Seong-Young Lee
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Publication number: 20140091995Abstract: A driving circuit for a multi-subpixel charge sharing type LCD panel includes a plurality of scan lines directly driven by gate driver chips. The driving circuit further includes a compensating line, and a level conversion module coupled to the compensating line. The level conversion module outputs a control signal to drive the compensating line after the level conversion module ends scanning of a last scan line and before the level conversion module begins scanning of next frame.Type: ApplicationFiled: November 5, 2012Publication date: April 3, 2014Applicant: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Nianmao Wang
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Patent number: 8681083Abstract: A display device includes a pixel matrix having pixel rows and pixel columns and including pixels having switching elements positioned alternately at a corner near an upper and a lower side of each pixel row and positioned alternately at a corner near an upper and a lower side of and alternately at a corner near a left and a right side of each pixel column; multiple pairs of gate lines transmitting a gate-on voltage; and multiple data lines transmitting data voltages, wherein each pair of gate lines are disposed at the upper and lower sides of each pixel row with the pixels in each row connected to the gate line positioned nearest the respective switching element, and each data line is disposed between adjacent pairs of pixel columns and connected to pairs of pixels where one pixel of the pair has a switching element positioned nearest the respective data line.Type: GrantFiled: April 18, 2005Date of Patent: March 25, 2014Assignee: Samsung Display Co., Ltd.Inventors: Nam-Soo Kang, Seong-Young Lee, Sung-Man Kim, Seung-Hwan Moon
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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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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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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: 8674915Abstract: A liquid crystal display apparatus includes an auxiliary electrode between adjacent first and second scan signal lines, first and second thin film transistors with gate electrodes connected to the first and second scan signal lines, respectively, first and second pixel electrodes connected to one of a source electrode and a drain electrode of the first and second thin film transistors, respectively, a data signal line that is connected to the other of the source electrode and the drain electrode of the first and second thin film transistors, and a common electrode facing the pixel electrodes via a liquid crystal layer. The first and second pixel electrodes are adjacent along the data signal line. A potential difference between the auxiliary and common electrodes is greater than a potential difference between the first pixel electrode and the common electrode and a potential difference between the second pixel electrode and the common electrode.Type: GrantFiled: March 11, 2011Date of Patent: March 18, 2014Assignee: Casio Computer Co., Ltd.Inventor: Yayoi Nakamura
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Publication number: 20140071109Abstract: An electrostatic discharge protection circuit and a display apparatus are provided. The electrostatic discharge protection circuit adapted to the display apparatus having a display panel which has a signal line and a common voltage line. The electrostatic discharge protection circuit includes a first switching unit and a second switching unit. The first switching unit is electrically coupled to the signal line. The second switching unit is electronically coupled between the first switching unit and the common voltage line. When the display apparatus is shut down, the first switching unit and the second switching unit form a conductive path. When the display apparatus is turned on, the first switching unit receives a first control signal, and the second switching unit receives a second control signal, so that at least one of the first switching unit and the second switching unit is turned off at the same time.Type: ApplicationFiled: May 2, 2013Publication date: March 13, 2014Applicant: Au Optronics CorporationInventors: Chien-Chang Tseng, Kuang-Hsiang Liu, Ya-Ting Yang
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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: 8670004Abstract: In an embodiment, a pixel driving circuit comprises: one or more source drivers for enabling a first subpixel of a subpixel pair to receive first data and a second subpixel of the subpixel pair to receive second data; one or more source drivers for driving the first data to the first subpixel and the second data to the second subpixel, wherein the first data is different than the second data.Type: GrantFiled: December 3, 2009Date of Patent: March 11, 2014Assignee: Pixel Qi CorporationInventors: Carlin J. Vieri, Michael Bolotski
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Patent number: 8665196Abstract: A display apparatus including: a pixel section having a plurality of pixel circuits arranged two-dimensionally by being each provided at an intersection of a scan line and a signal line as a circuit including a switching device, a display element and a storage capacitor; and a correction circuit for correcting a storage-capacitor voltage supplied to the storage capacitors, wherein the correction circuit employs a comparator for detecting the difference between electric potentials received from a portion of the pixel section as a pixel electric potential having a positive polarity and a pixel electric potential having a negative polarity and for comparing the difference in electric potential with a reference voltage, and an output-voltage control circuit for converting a comparison result output by the comparator into a correction signal used for correcting the storage-capacitor voltage to be asserted on a storage-capacitor line used for supplying the storage-capacitor voltage.Type: GrantFiled: August 25, 2008Date of Patent: March 4, 2014Assignee: Japan Display West Inc.Inventors: Tomoyuki Fukano, Toshihiko Orii, Hiroshi Nakao, Naoyuki Itakura
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Patent number: 8665197Abstract: A pulse is input to first and second TFTs to turn ON the first and second TFTs so that the potential of a node a rises. When the potential of the node a reaches (VDD?VthN), the node ? enters a floating state. Accordingly, a third TFT then turns ON, and potential of an output node rises as a clock signal reaches the level H. On the other hand, potential of a gate electrode of the third TFT further rises due to an operation of capacitance as the potential of the output node rises, so that the potential of the output node would be higher than (VDD+VthN). Thus, the potential of the output node rises to VDD without voltage drop caused by a threshold of the third TFT.Type: GrantFiled: September 6, 2012Date of Patent: March 4, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Munehiro Azami, Shou Nagao, Yoshifumi Tanada
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Publication number: 20140055430Abstract: A liquid crystal display device includes a first substrate including gate lines and a storage capacitance line, a first source line and a second source line, a main pixel electrode which has a strip shape, a sub-pixel electrode which is continuous with the main pixel electrode and has a strip shape extending toward the first source line and the second source line, and a first alignment film, a second substrate including second main common electrodes extending on both sides of the main pixel electrode, second sub-common electrodes which are continuous with the second main common electrodes and extend on both sides of the sub-pixel electrode, and a second alignment film, and a liquid crystal layer held between the first substrate and the second substrate.Type: ApplicationFiled: October 8, 2013Publication date: February 27, 2014Applicant: Japan Display Inc.Inventors: Jin Hirosawa, Arihiro Takeda, Hirokazu Morimoto
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Publication number: 20140055432Abstract: Disclosed herein is a display device that allows a vertical scanning line to be shared between a plurality of rows without increasing the number of control lines or control signals, the display device including pixel circuits; vertical scanning lines; and horizontal scanning lines.Type: ApplicationFiled: October 30, 2013Publication date: February 27, 2014Applicant: SONY CORPORATIONInventors: Tetsuro Yamamoto, Katsuhide Uchino
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Patent number: 8659527Abstract: An active device array substrate including a substrate, a plurality of pixel structures and a plurality of resistance compensating devices is provided. The substrate has a display region and a scanning signal input region beside the display region. The pixel structures are disposed in the display region. Each of the pixel structures includes a scan line, a data line, an active device and a pixel electrode. The data line is disposed in stagger with the scan line. The active device is electrically connected with the scan line and the data line. The pixel electrode is electrically connected with the active device. Each of the resistance compensating devices and a scan line of a corresponding pixel structure are connected in parallel. Resistances of the resistance compensating devices gradually decrease from a region close to the scanning signal input region to another region away the scanning signal input region.Type: GrantFiled: November 17, 2011Date of Patent: February 25, 2014Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Po-Hung Kuo, Chih-Ho Lien
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Publication number: 20140049459Abstract: The present invention relates to an area-saving driving circuit for a display panel, which comprises a plurality of digital-to-analog converting circuits convert input data, respectively, and produce a pixel signal. A plurality of driving units are coupled to the plurality of digital-to-analog converting circuits, respectively. They produce a driving signal according to the pixel signal and transmit the driving signal to the display panel for displaying. A plurality of voltage booster units are coupled to the plurality of driving units, respectively, and produce a supply voltage according to a control signal. Then the supply voltage is provided to the plurality of driving units. Thereby, by providing the supply voltage to the plurality of driving units of the display panel by means of the plurality of voltage booster units, the area of the external storage capacitor is reduced. Alternative, the external storage capacitor can be even not required.Type: ApplicationFiled: July 1, 2011Publication date: February 20, 2014Applicant: SITRONIX TECHNOLOGY CORP.Inventor: Min-Nan Liao
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Patent number: 8654053Abstract: A liquid crystal display (LCD) device is provided. The LCD device comprises a data signal line in a first plane and a common electrode line in a second plane, and the common electrode line comprises an intersection region, which is a region where a projection of the common electrode line in the first plane overlaps with a region of the data signal line. The intersection region comprises a plurality of narrow common electrode lines.Type: GrantFiled: December 14, 2007Date of Patent: February 18, 2014Assignee: Beijing Boe Optoelectronics Technology Co., Ltd.Inventor: Wenbao Gao
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Patent number: 8648787Abstract: A pixel circuitry for a display apparatus is provided herein. The pixel circuitry includes a first storage element, and a switching element composed of a plurality of switches. The first storage element has a first terminal receiving a pixel signal and a second terminal coupled to a first voltage. The first storage element is used for storing the pixel signal. The switching element includes a first switch and a second switch respectively conducted in response to a first signal and a second signal. Each of the first switch and the second switch has an input terminal coupled to a data line and an output terminal coupled to the first storage element. The cooperation of the first switch and the second switch has benefit of delivering the pixel signal without influence of body effect.Type: GrantFiled: February 16, 2009Date of Patent: February 11, 2014Assignee: Himax Display, Inc.Inventors: Cheng-Chi Yen, Ju-Tien Cheng
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Patent number: 8643577Abstract: A display electrode structure and the repairing method thereof are described. The display electrode structure includes a display electrode and at least one opening formed on the display electrode and extending toward the inside of the display electrode so as to easily repair a display electrode defect thereon. The display electrode repairing method uses a laser beam to cut a display electrode from the opening and along the metal line to separate the display electrode from an adjacent display electrode so as to remove a short circuit between the display electrode and the adjacent display electrode.Type: GrantFiled: March 3, 2008Date of Patent: February 4, 2014Assignee: E Ink Holdings Inc.Inventors: Chih-Chien Chiou, Yu-Chen Hsu, Chi-Ming Wu
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Publication number: 20140028653Abstract: In a display device using an address decoder circuit as a drive circuit, a malfunction is prevented even when a display drive frequency becomes high. The display device includes a plurality of first scanning lines inputting a scanning voltage to a plurality of pixels, a plurality of second scanning lines inputting a scanning voltage to the plurality of pixels, and a scanning line drive circuit supplying the scanning voltages to the pluralities of first and second scanning lines. When N is an integer of 2 or more, the first scanning lines and the second scanning lines are grouped into kN× . . . ×k2 groups. An address decoder circuit that drives scanning lines in each of the groups is composed of a CMOS circuit.Type: ApplicationFiled: July 26, 2013Publication date: January 30, 2014Applicant: Japan Display Inc.Inventor: Kozo YASUDA
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Publication number: 20140022153Abstract: A liquid crystal display device that can reduce picture quality deterioration due to a kickback voltage and can accurately detect a kickback voltage is provided. The liquid crystal display device includes: a liquid crystal panel including a detector configured to generate a kickback voltage detection signal, a detection line for supplying the kickback voltage detection signal, and a ground pattern along and adjacent to one side of the detection line; and a common voltage generator connected to the detection line and configured to generate a common voltage corresponding to the kickback voltage detection signal and to supply the generated common voltage to the liquid crystal panel.Type: ApplicationFiled: June 6, 2013Publication date: January 23, 2014Inventors: Sang Min Lim, Jeong Geun Yoo, Kwang Sae Lee
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Patent number: 8624258Abstract: Semiconductor elements deteriorate or are destroyed due to electrostatic discharge damage. The present invention provides a semiconductor device in which a protecting means is formed in each pixel. The protecting means is provided with one or a plurality of elements selected from the group consisting of resistor elements, capacitor elements, and rectifying elements. Sudden changes in the electric potential of a source electrode or a drain electrode of a transistor due to electric charge that builds up in a pixel electrode is relieved by disposing the protecting means between the pixel electrode of the light-emitting element and the source electrode or the drain electrode of the transistor. Deterioration or destruction of the semiconductor element due to electrostatic discharge damage is thus prevented.Type: GrantFiled: September 1, 2011Date of Patent: January 7, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Shunpei Yamazaki, Masahiko Hayakawa, Yoshifumi Tanada, Mitsuaki Osame, Aya Anzai, Ryota Fukumoto
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Patent number: 8624812Abstract: A liquid crystal includes a plurality of pixels, a plurality of gate lines, and a plurality of data lines. The plurality of pixels are arranged in a matrix format. The plurality of gate lines transmit a gate signal to the pixels. The plurality of data lines cross the gate lines and transmit data voltages respectively corresponding to the plurality of pixels a plural number of times. A voltage that is the same as that of the data lines neighboring the first and last data lines is applied to the first and last data lines among the plurality of data lines at least once.Type: GrantFiled: October 30, 2007Date of Patent: January 7, 2014Assignee: Samsung Display Co., Ltd.Inventors: Byoung-Jun Lee, Jang-Hyun Yeo, Hyun-Su Lee, Seung-Hwan Moon, Yong-Bum Kim
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Patent number: 8619011Abstract: To provide a display device in which a viewing angle characteristic is improved by providing a plurality of sub-pixels to one pixel. Alternatively, to provide a display device in which an aperture ratio is suppressed even when a plurality of sub-pixels is provided. A pixel including first sub-pixel, a second sub-pixel, and a third sub-pixel, a scanning line, a signal line, a first capacitor wiring, a second capacitor wiring and a third capacitor wiring are provided. Pixel electrodes each electrically connected to one electrode of the first to third capacitor elements, and the first to third capacitor wirings, respectively, are provided to the first to third sub-pixels electrodes, respectively. Potentials of the first capacitor wiring and the second capacitor wiring are changed and a potential of the third capacitor wiring is kept almost constant.Type: GrantFiled: May 15, 2008Date of Patent: December 31, 2013Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Hajime Kimura
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Patent number: 8614658Abstract: A segmented-pixel liquid crystal display has a plurality of pixels of which each has three sub-pixels 10a-10c, namely one middle and two side sub-pixels, arranged next to one another in the column or row direction. The sub-pixels 10a-10c have different brightness levels when the pixel as a whole is in a given middle halftone state, and the middle sub-pixel 10a has the highest brightness level. This eliminates unnaturalness as is conventionally produced when an image with a straight border is displayed, and further improves the gamma characteristic.Type: GrantFiled: October 4, 2005Date of Patent: December 24, 2013Assignee: Sharp Kabushiki KaishaInventors: Masanori Takeuchi, Tomokazu Ohtsubo, Toshihide Tsubata
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Patent number: 8614654Abstract: A display configured to reduce intra-pixel crosstalk is provided. In one embodiment, a system includes a processor, a memory, and a display. The display may include a pixel array and associated driving circuitry. The display may be configured to balance charges induced on a gate line and on an adjacent common line of the pixel array in response to application of a first data voltage on a first data line, and to perform such balancing before applying a second data voltage to a second data line adjacent the first data line to reduce or eliminate intra-pixel crosstalk. Additional systems, devices, and methods relating to reducing intra-pixel crosstalk in a display are also disclosed.Type: GrantFiled: July 29, 2010Date of Patent: December 24, 2013Assignee: Apple Inc.Inventor: Yongman Lee
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Publication number: 20130335393Abstract: The present invention provides a liquid crystal display panel and array substrate thereof. The array substrate includes at least a plurality of first scan lines, second scan lines, data lines and a plurality of pixel units arranged in a matrix form; pixel electrodes of pixel unit being divided into at least first sub electrode, second sub electrode and third sub electrode, and controlling first sub electrode and second sub electrode to have a default voltage difference when displaying voltage signal of a same image in 3D display mode. As such, the present invention can reduce signal crosstalk problem in 3D display mode, improve color difference in large view angle condition and reduce color distortion.Type: ApplicationFiled: June 18, 2012Publication date: December 19, 2013Applicant: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO. LTDInventor: Zui Wang
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Patent number: 8610670Abstract: The imaging and display apparatus is provided. The imaging and display apparatus includes the following elements. An imaging-and-display panel has an image display function and an imaging function. A generation unit generates a difference image representing a difference between a display-light-based image and a shadow image, the display-light-based image being obtained by the imaging-and-display panel by imaging an object close to the imaging-and-display panel using display light from the imaging-and-display panel, the shadow image being obtained by the imaging-and-display panel by imaging a shadow of the object. An image processing unit obtains information concerning at least one of a position, shape, and size of the object taking the shadow image and the difference image into account.Type: GrantFiled: August 21, 2007Date of Patent: December 17, 2013Assignee: Japan Display West Inc.Inventors: Tsutomu Harada, Takeru Tamayama, Kazunori Yamguchi, Mitsuru Tateuchi, Kouji Tsujimura, Ryoichi Tsuzaki
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Patent number: 8599225Abstract: A plurality of gray-scale values is extracted from image signals corresponding to a dimming area to calculate a mean value of the gray-scale values, and at least one of a variance, a standard deviation, a kurtosis, a skewness, a central moment, and an image moment is calculated using the mean value. Then, a representative gray-scale value corresponding to the dimming area is determined using the calculated values, and a dimming function for the light sources included in the dimming area is determined based on the representative gray-scale value. Then, the light sources included in the dimming area are driven based on the dimming function.Type: GrantFiled: December 16, 2010Date of Patent: December 3, 2013Assignee: Samsung Display Co., Ltd.Inventors: Tae Kwon Jung, Dongmin Yeo, Byungchoon Yang, Yong-Hoon Kwon
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Publication number: 20130314618Abstract: In driving a liquid crystal panel of a liquid crystal display device of the present invention, when voltage applied to a gate line G1 is lowered to switch off a pixel P1, voltage applied to a gate line G2 and a gate line G3 rises to switch on a pixel P2 and a pixel P3. In such a case, timing t1 at which the voltage applied to the gate line G1 drops is set to be different from timing t3 at which the voltage applied to the gate lines G2, G3 rises. According to the driving method, ripples each having amplitude Vu1 and Vd1 that are generated in the storage capacitor line CS1 are less likely to be cancel out and attenuated. This improves display quality.Type: ApplicationFiled: February 1, 2012Publication date: November 28, 2013Applicant: SHARP KABUSHIKI KAISHAInventor: Ryo Yamakawa
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Patent number: 8587504Abstract: A liquid crystal display (“LCD”) includes an LCD panel, a data driving unit, and a selection unit. A configuration of the selection unit, which includes a plurality of switching devices driven by a selection control signal to connect a plurality of data lines to each channel of the data driving unit, is adjusted according to the selection control signal, so that charging voltages of the same color pixels of the LCD panel are made the same, whereby no stripe defect appears. In addition, the configuration of the selection unit is adjusted according to the selection control signal and the polarity change of the data signal supplied from the data driving unit, so that color aggregation caused by supplying the same polarity voltage to adjacent color pixels of the LCD panel can be minimized.Type: GrantFiled: October 31, 2007Date of Patent: November 19, 2013Assignee: Samsung Display Co., Ltd.Inventor: Soong Yong Joo
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Patent number: 8587572Abstract: In a storage capacitor line drive circuit driving a storage capacitor line of an active-matrix display device and driven by outputs of a scanning signal line drive circuit, at least one (VSS) of a high-potential supply voltage (VDD) and a low-potential supply voltage (VSS) differs from a supply voltage (GVSS) of a corresponding logical level of the scanning signal line drive circuit, the high-potential supply voltage and the low-potential supply voltage being used for generating a signal voltage of a preceding stage to an output stage. This makes it possible to achieve a storage capacitor line drive circuit capable of avoiding malfunctioning even in a case where the storage capacitor line drive circuit receives noise from a scanning signal line, and a display device including the storage capacitor line drive circuit.Type: GrantFiled: August 21, 2008Date of Patent: November 19, 2013Assignee: Sharp Kabushiki KaishaInventors: Yasushi Sasaki, Yuhichiroh Murakami, Makoto Yokoyama, Shige Furuta
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Patent number: 8587570Abstract: Crosstalk in the area of intersection between row leads and row electrodes as well as undesired optical effects are avoided in an LCD display element. An LCD display panel is made of the disclosed LCD display elements. By extending the row leads over the full width of the rectangular viewing area in which information is visually displayed, the portion of the viewing area that cannot be controlled by proper drive voltage pulses is minimized. Thus, undesired crosstalk and optical effects are reduced. By driving row electrodes using column voltage sequences of the prior art and by driving column electrodes using row voltage sequences of the prior art, row and column voltage sequences are generated such that an intermediate area of liquid crystal located between the row leads and corresponding row electrodes cannot be driven to a voltage that produces an intermediate condition between an ON condition and an OFF condition.Type: GrantFiled: July 7, 2010Date of Patent: November 19, 2013Assignee: BMG Gesellschaft fuer moderne Informationssysteme mbHInventors: Reiner Bayrle, Thomas Bitter, Otto Bader, Arnold Simon
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Patent number: 8587505Abstract: The present invention provides a liquid crystal display with a plurality of pixel units. Each pixel unit includes two sub-pixels. Each sub-pixel includes a thin film transistor, a liquid crystal capacitor and a storage capacitor. One of the storage capacitors is a changeable capacitor. By the changeable capacitor, two different data voltages are generated in respective sub-pixels during adjacent frames. The different data voltages are symmetrical with respect to a common voltage to improve image quality.Type: GrantFiled: March 25, 2011Date of Patent: November 19, 2013Assignee: Hannstar Display CorporationInventor: Po-Sheng Shih
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Patent number: 8587580Abstract: A pixel structure of a liquid crystal cell that is implemented in a filed sequential liquid crystal display and a method of driving the same. The liquid crystal display includes: a liquid crystal display panel including a plurality of scan lines and data lines, and a plurality of pixels connected to the scan lines and the data lines and arranged in a matrix form; a control signal generating unit for providing a control signal and a reset signal to the pixels of the liquid crystal display panel respectively; a common voltage generating unit for providing a common voltage to the respective pixels; and a boosting voltage generating unit for providing a boosting voltage to the respective pixels.Type: GrantFiled: December 13, 2010Date of Patent: November 19, 2013Assignee: Samsung Display Co., Ltd.Inventors: Il-Nam Kim, Won-Sang Park, Min-Woo Kim, Jae-Kyoung Kim, Dong-Hun Lim
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Patent number: 8581818Abstract: To increase the frequency of input of image signals, a pixel portion of a liquid crystal display device is divided into a plurality of regions, and input of image signals is controlled in each of the plurality of regions. As a result, a plurality of scan lines can be selected at the same time in the liquid crystal display device. That is, in the liquid crystal display device, image signals can be simultaneously supplied to pixels placed in a plurality of rows, among pixels arranged in matrix. Thus, the frequency of input of an image signal to each pixel can be increased without change in response speed of a transistor or the like included in the liquid crystal display device.Type: GrantFiled: March 28, 2011Date of Patent: November 12, 2013Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Jun Koyama, Shunpei Yamazaki