Input/output Liquid Crystal Display Panel Patents (Class 345/104)
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Patent number: 8812365Abstract: A novel digital photo frame is configured to display user-loaded photographs, moving pictures, and other personal data and corporate-paid advertisements which are dynamically updatable by an advertising data distribution center or another communications service provider, such as a cellular service provider. The invention also discloses a related, novel method of advertising in a digital photo frame with dynamically-updatable-ads, in which initial advertising fees for one or more dynamically-updateable ads at least partially pay for manufacturing costs of the digital photo frame for inexpensive distribution of the digital photo frame to a targeted consumer.Type: GrantFiled: April 22, 2012Date of Patent: August 19, 2014Inventor: Hojin Ahn
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Patent number: 8810506Abstract: A touch panel includes multiple sensing units and each thereof includes a first transistor, a reference capacitor, a liquid crystal capacitor and a second transistor. ON/OFF states of the first transistor are determined by a potential provided by a corresponding scan line. The reference capacitor and the liquid crystal capacitor are coupled in series between another scan line adjacent to the corresponding scan line and a common potential. A capacitance value of the liquid crystal capacitor changes with a pressed degree of the sensing unit. ON/OFF states the second transistor are determined by a potential at a connection node between the reference capacitor and the liquid crystal capacitor. The first transistor transmits a first potential to the connection node when the first transistor is turned on, and the second transistor transmits a second potential different from the first potential to a readout line when the second transistor is turned on.Type: GrantFiled: December 14, 2010Date of Patent: August 19, 2014Assignee: AU Optronics Corp.Inventor: Tzu-Wei Liu
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Patent number: 8803927Abstract: An exemplary pixel circuit and a flat display panel using the same are provided. The pixel circuit includes three sub-electrode control circuits. The sub-electrode control circuits are controlled by two scan lines to receive data transmitted from two data lines. One of the three sub-electrode control circuits adjusts stored data by charge sharing. Accordingly, a display control of the pixel circuit is achieved by the three sub-electrode control circuits.Type: GrantFiled: January 6, 2012Date of Patent: August 12, 2014Assignee: Au Optronics Corp.Inventors: Yu-Ching Wu, Tien-Lun Ting, Kun-Cheng Tien, Chien-Huang Liao, Wen-Hao Hsu
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Patent number: 8803791Abstract: Provided is a display device that includes an optical sensor having a high sensitivity in which a potential difference of an accumulation node due to an illuminance difference on a light receiving surface after boosting is set greater than a potential difference of the same at an end of an integration period. The display device includes an optical sensor in a pixel region. The optical sensor includes a diode D1; a reset signal line RST for supplying a reset signal; a readout signal line RWS for supplying a readout signal; an accumulation node having a potential (VINT) that varies with an amount of light received by the diode D1 during a period from supply of the reset signal to supply of the readout signal; an amplifying element C1 for amplifying VINT according to the readout signal; and a sensor switching element M2 for reading out the amplified potential and outputting the same to an output line.Type: GrantFiled: November 30, 2010Date of Patent: August 12, 2014Assignee: Sharp Kabushiki KaishaInventors: Yasuhiro Sugita, Kohei Tanaka, Hiromi Katoh, Christopher Brown
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Patent number: 8803792Abstract: A color liquid crystal display device capable of displaying color images comprises an input pen for use in determining the individual position for color display on the screen of a liquid crystal display panel, a coordinate detector for recognizing the position as designated by the input pen to output the position as the corresponding coordinate data, a color designator circuit for designating a color as presently selected for color display to output the color as a color data, a memory device for storing the color data representative of the color designated, a memory controller responsive to receipt of an address issued from the selected coordinate data for controlling the color data to be written into and read out of the memory, and an output controller which allows the color data read from the memory to be supplied to the liquid crystal display panel as video data.Type: GrantFiled: July 2, 2012Date of Patent: August 12, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Yoshiharu Hirakata
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Patent number: 8803838Abstract: A display is provided. The display includes electro-optical material arranged between first and second planes facing each other; a first substrate arranged on the first plane and including a conductor; first electrically conductive film arranged on the second plane; second electrically conductive film arranged outside an area sandwiched between the first and second planes; current detection circuit detects current on the second electrically conductive film; and control circuit that, during a time period the current is detected by the current detection circuit, applies substantially the same voltage as that applied to the second electrically conductive film to one of the conductor and the first electrically conductive film, which is arranged closer to the second electrically conductive film, and sets the other in a floating state, or applies substantially the same voltage as that applied to the second electrically conductive film to both the conductor and the first electrically conductive film.Type: GrantFiled: January 9, 2014Date of Patent: August 12, 2014Assignee: NLT Technologies, Ltd.Inventors: Hiroshi Haga, Jiro Yanase, Yoichi Kitagishi
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Patent number: 8786555Abstract: Computer-readable media, computerized methods, and a touchscreen device manipulating user-input elements are provided. Generally, manipulation includes identifying a predefined configuration associated with a request received from a user and/or application, deriving configuration settings from the predefined configuration, and transmitting the configuration settings to an electromechanical device that adjusts a portion of user-input elements to an extended orientation and activates a portion of user-input elements. In embodiments, the extended user-input elements positioned in the extended orientation are activated, while the remainder are set to an idle condition. Typically, the extended user-input elements produce outwardly-extending protrusions expressed at a flexible touchpad incorporated in the touchscreen device. These outwardly-extending protrusions may replicate keys of a standard keyboard and correspond with the presently-running application implemented on the touchscreen device.Type: GrantFiled: March 21, 2008Date of Patent: July 22, 2014Assignee: Sprint Communications Company L.P.Inventors: Eric M. Bloomcamp, Shane R. Werner, Warren B. Cope
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Patent number: 8786529Abstract: A voltage may be provided to a liquid crystal addressable element as part of a liquid crystal device. The provided voltage may be reduced from a driven state to a relaxed state in a time period greater than 1 ?s. The reduction may further be performed in less than 20 ms. The liquid crystal device may be a polarization switch, which in some embodiments may be a multi-segment polarization switch. In one embodiment, pulses of limited duration of a light source may be provided to the polarization switch. The manner of voltage reduction may reduce optical bounce of the liquid crystal device and may allow one or more of the pulses of the light source to be shifted later in time.Type: GrantFiled: May 18, 2011Date of Patent: July 22, 2014Assignee: zSpace, Inc.Inventors: David A. Chavez, Michael A. Cheponis, Mark F. Flynn
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Patent number: 8773481Abstract: A pixel structure disposed on a substrate including a scan line, a data line, an active element, a first electrode, and a second electrode is provided. The scan line and the data line are intersected to define a rectangular pixel area. The active element is electrically connected to the scan line and the data line. The first electrode has stripe patterns and connecting patterns located in the rectangular pixel area. Each connecting pattern is connected to the central parts or the parts near the central parts of two adjacent stripe patterns to demarcate or define two silts between the two adjacent stripe patterns. The extending direction of the slits is intersected to the rectangle length of the rectangular pixel area by an angle ? wherein 0°??<45°. The second electrode is located between the first electrode and the substrate and part of the second electrode is exposed by the slits.Type: GrantFiled: March 10, 2010Date of Patent: July 8, 2014Assignee: AU Optronics CorporationInventors: Ying-Chi Lu, Chih-Yun Chai, Ming-Chun Li, Hong-Ji Huang, Seok-Lyul Lee
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Patent number: 8773339Abstract: A method of driving a display panel includes applying a common voltage to the display panel, sensing a frequency of the display panel to generate a frequency signal, adjusting a gain of an operational amplifier based on the frequency signal, receiving a feedback common voltage from the display panel, and compensating the common voltage using an input resistor, the operational amplifier and a feedback resistor based on the feedback common voltage to apply the compensated common voltage to the display panel. The operational amplifier includes an inverting input terminal connected to the input resistor, a non-inverting input terminal to which a reference common voltage is applied and an output terminal. The feedback resistor is between the inverting input terminal and the output terminal.Type: GrantFiled: August 15, 2011Date of Patent: July 8, 2014Assignee: Samsung Display Co., Ltd.Inventors: Young-Su Kim, Jae-Hoon Lee, Chang-Ho Lee, Yu-Han Bae
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Patent number: 8766924Abstract: An EL emitting touch switch includes first electrodes, a single second electrode facing the first electrodes, and EL layers each sandwiched between a corresponding one of the first electrodes and the second electrode. A light emission driver applies a driving voltage between the first and second electrodes to cause the EL layers to emit light. A timing signal generator generates a timing signal to control the light emission driver such that the application of the driving voltage is stopped at predetermined intervals. Touch decision units are provided for each first electrode. Each touch decision unit includes a feedback circuit for supplying current to the corresponding first electrode such that the potentials of the first and second electrodes become equal to each other, and detects contact of a human body with the corresponding first electrode based on operation of the feedback circuit while the application of the driving voltage is stopped.Type: GrantFiled: March 14, 2008Date of Patent: July 1, 2014Assignees: Mitsubishi Jidosha Kogyo Kabushiki Kaisha, Visteon Japan, Ltd.Inventors: Kazuto Yamauchi, Yasunori Murayama, Sadahiko Tanaka, Keitaro Takizawa, Kouichi Yamanoue
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Patent number: 8766889Abstract: A liquid crystal display and a driving method thereof are provided. The liquid crystal display includes a plurality of pixels, a plurality of scan lines, and a plurality of data lines. Each pixel includes a plurality of sub-pixels. Each sub-pixel is coupled to the data line, and includes a switch, a storage capacitor, and a sub-pixel electrode. The switch is coupled to a scan line to receive a scan signal. The switch is turned on by the scan signal to receive a data signal transmitted from the data line. The storage capacitors of the sub-pixels of each pixel are coupled to the scan lines, or the storage capacitor of one of the sub-pixels of each pixel is coupled to a common electrode and the storage capacitors of the other sub-pixels are coupled to the scan lines. The switch and the storage capacitor of each sub-pixel are coupled to different scan lines.Type: GrantFiled: March 27, 2008Date of Patent: July 1, 2014Assignee: Au Optronics CorporationInventors: Ming-Sheng Lai, Chih-Wei Wang, Hsueh-Ying Huang, Chen-Kuo Yang
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Patent number: 8766908Abstract: A touch panel is provided. The touch panel having a pixel area and a sensing area includes a first substrate and an opposite second substrate. A press sensing spacer is disposed on the sensing area of the first substrate. A press sensing stage is disposed on the sensing area of the second substrate, corresponding to the press sensing spacer. An alignment layer is disposed over the second substrate, covering the press sensing stage and the pixel area of the second substrate. In an embodiment, the height of the press sensing stage is greater than the height from the surface of the second substrate at the pixel area to the bottom of the alignment layer by at least 0.05 ?m.Type: GrantFiled: April 7, 2011Date of Patent: July 1, 2014Assignee: Hannstar Display Corp.Inventors: Hsuan-Chen Liu, Yi-Chung Juan, Sung-Chun Lin, Wei-Chi Lin
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Patent number: 8754842Abstract: An integrated display and camera without simple or compound lenses comprising interleaved light-emitting and light-sensing/photosensor elements. Image formation without use of a simple or compound lens can be obtained via software algorithms operating on light-sensing measurements, for example implementing a two-dimensional deconvolution operation defined by the transfer function imposed by a microoptic array. For example, a microoptic aperture array can be configured to comprise localized optical overlaps which are readily deconvolved or otherwise solved for by an algorithm. Associated microoptic structures can be as simple as apertures or can be more complex, for example including microlenses. Display and photosensor elements can include color capabilities. Light-sensing elements can be similar, nearly, or essentially identical in structure and/or composition to the light-emitting element.Type: GrantFiled: April 6, 2009Date of Patent: June 17, 2014Inventor: Lester F. Ludwig
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Patent number: 8749474Abstract: The invention relates to an LCD circuit and a method for triggering at least one pixel (3) of a liquid crystal display (LCD) in order to optionally apply a voltage (V) between a first and a second electrode (1, 2), between which a layer (4) of liquid crystals is arranged. The pixel (3) switches into a non-transparent state when a voltage (V) is applied whose value is greater than or equal to the value of a threshold voltage (VD, VD?) between the electrodes (1, 2), a sensor voltage (VS) which changes across a sensor period (T) being applied to at least one of the electrodes (1; 1, 2) as said voltage (V) or part of said voltage (V) in order to generate a sensor signal for detecting an object (5) approaching the pixel (3).Type: GrantFiled: May 4, 2007Date of Patent: June 10, 2014Assignee: QUALCOMM IncorporatedInventor: Alexander Jarczyk
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Patent number: 8749475Abstract: A pixel array including a plurality of scan lines and a plurality of data lines disposed crossing the scan lines to define a plurality of sub-pixel regions; at least a controlling structure, disposed in one of the sub-pixel regions and electrically connected to one of the scan lines and data lines; a plurality of sensing signal lines disposed parallel with the data lines and crossing the scan lines to define a plurality of regions having at least one first sub-region and second sub-region; at least one sensing-signal readout device disposed in the first sub-region and electrically connected with one of the scan lines and sensing signal lines; and at least one first sensing pad disposed in the second sub-region and electrically connected to the sensing-signal readout device in the second sub-region. The numbers of the sensing-signal readout devices electrically connected to the respective scan lines are the same.Type: GrantFiled: October 18, 2010Date of Patent: June 10, 2014Assignee: Au Optronics CorporationInventors: Szu-Chieh Chen, Ming-Tien Lin, Pin-Wei Wu
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Patent number: 8749496Abstract: This relates to displays for which the use of dual function capacitive elements does not result in any decreases of the aperture of the display. Thus, touch sensitive displays that have aperture ratios that are no worse than similar non-touch sensing displays can be manufactured. More specifically, this relates to placing touch sensing opaque elements so as to ensure that they are substantially overlapped by display related opaque elements, thus ensuring that the addition of the touch sensing elements does not substantially reduce the aperture ratio. The touch sensing display elements can be, for example, common lines that connect various capacitive elements that are configured to operate collectively as an element of the touch sensing system.Type: GrantFiled: December 5, 2008Date of Patent: June 10, 2014Assignee: Apple Inc.Inventors: Shih Chang Chang, John Z. Zhong
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Patent number: 8749961Abstract: Provided is a display apparatus. A stand type of the display apparatus may be converted into a tilt type or a flip type as necessary.Type: GrantFiled: November 4, 2010Date of Patent: June 10, 2014Assignee: LG Electronics Inc.Inventor: Changsung Hong
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Patent number: 8749745Abstract: An organic electroluminescent device comprises: a substrate; a display unit located on the substrate and including a plurality of subpixels; a sealing region located at the outer periphery of the display unit and defined to form a sealing member; and a plurality of wiring lines connected to the display unit and disposed on the lateral side of the display unit, some of the plurality of wiring lines are respectively divided into two or more in the sealing region.Type: GrantFiled: May 28, 2008Date of Patent: June 10, 2014Assignee: LG Display Co. Ltd.Inventors: Hongki Park, Woochan Kim, Hongseok Choi
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Patent number: 8723806Abstract: Disclosed is a liquid crystal display device of novel construction, in which a fingerprint recognition device is integrally formed with the liquid crystal display device, thereby minimizing the increase in the price and size of a final product. The liquid crystal display device comprises an image display panel and a fingerprint recognition panel which are integrally formed, wherein the image display panel comprises a scan drive unit which sequentially turns on rows formed in the image display panel for each frame in order to display images, and a data drive unit which outputs data signals to a turned-on row provided in the image display panel, and wherein the fingerprint recognition panel comprises a switch control unit which sequentially turns on rows formed in the fingerprint recognition panel for each frame in order to perform fingerprint recognition, and a reading unit, to which fingerprint information recognized from a turned-on row is outputted.Type: GrantFiled: September 19, 2007Date of Patent: May 13, 2014Assignee: Hydis Technologies Co., Ltd.Inventors: Choong Hoo Kim, Kyu Chang Park, Min Soo Shim
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Patent number: 8723785Abstract: A liquid crystal display includes: a transmissive liquid crystal display device having a display region made up of pixels arrayed in a matrix fashion. The liquid crystal display device includes a planar light source unit formed of planar light source units corresponding to respective display region units on an assumption that the display region is divided into the display region units and configured in such a manner that each planar light source unit irradiates a corresponding display region unit with light, and a drive circuit driving the liquid crystal display device and the planar light source device. The liquid crystal display device is scanned line-sequentially and the pixels making up each display region unit are scanned line-sequentially. A planar light source unit corresponding to a display region unit is held in a luminous state over a predetermined period since a line-sequential scan on the display region unit has been completed.Type: GrantFiled: January 25, 2010Date of Patent: May 13, 2014Assignee: Sony CorporationInventors: Hideki Sugimoto, Hiroshi Hasegawa
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Patent number: 8717279Abstract: A touch panel structure includes a backlight module, a liquid crystal display (LCD) layer, a capacitive sensing layer, a bonding layer, and an electromagnetic sensing layer. The backlight module has at least one extended wall portion to enclose a receiving space therein. The LCD layer and the capacitive sensing layer are bonded together via the bonding layer, and are positioned in the receiving space. The electromagnetic sensing layer is attached to one side of the backlight module opposite to the LCD layer. With these arrangements, the touch panel structure provides more than one touch manner and is therefore more convenient for use.Type: GrantFiled: April 10, 2012Date of Patent: May 6, 2014Inventor: Chih-Chung Lin
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Patent number: 8711086Abstract: A method of manufacturing touch panel includes the steps of providing a backlight module having at least one extended wall portion formed therewith, so that a receiving space is enclosed in the extended wall portion; providing a liquid crystal display (LCD) layer and a capacitive sensing layer; providing a bonding layer to bond the LCD layer and the capacitive sensing layer to each other; and positioning the bonded LCD layer and capacitive sensing layer in the receiving space of the backlight module. Any extra amount of the bonding layer flowing out from between the bonded LCD layer and capacitive sensing layer forms an overflowed portion that is stopped by the extended wall portion from entering into the receiving space, so that time and labor costs for removing the overflowed portion in assembling the touch panel are saved and the production yield is increased.Type: GrantFiled: April 10, 2012Date of Patent: April 29, 2014Inventor: Chih-Chung Lin
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Patent number: 8711119Abstract: A display system includes a touch screen and a driving circuit. The touch screen includes touch sensors and a light source. A converter of the driving circuit receives an input voltage and provides a first output voltage to the light source according to a driving signal. A controller of the driving circuit converts the first output voltage to a second output voltage to drive the touch sensors, compares a voltage feedback signal indicating whether the second output voltage reaches a desired voltage level with a current feedback signal indicating whether a current through the light source reaches a desired current level, selects a feedback signal from the voltage feedback signal and the current feedback signal according to the comparison, and generates the driving signal to adjust the first output voltage according to the selected feedback signal.Type: GrantFiled: April 3, 2012Date of Patent: April 29, 2014Assignee: O2Micro, Inc.Inventors: Da Liu, Horia Udrea Spenea
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Publication number: 20140111476Abstract: An in-cell touch panel LCD module (100) and a method for driving the same includes a common electrode layer including first and second common electrodes. A control circuit divides the frame time period into a display time period and a touch control time period. A display signal is applied to the common electrode layer during the display time period for a normal LCD display. First and second touch control signals are applied to the first and second common electrodes, respectively, during the touch control time period, so that the electric potential of the first common electrode equals to that of the driving line and the electric potential of the second common electrode equals to that of the sensing line.Type: ApplicationFiled: December 23, 2013Publication date: April 24, 2014Applicant: Shanghai Tianma Micro-Electronics Co., Ltd.Inventors: Shuai YOU, Jun MA, Conghua MA, Qijun YAO
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Patent number: 8704551Abstract: A standard cell used for the logic synthesis and the routing of layout is configured by a logic circuit on an output side and a logic circuit on an input side, and a driving capacity of the logic circuit on the output side is made large while gate input capacitance of the logic circuit on the input side is made small.Type: GrantFiled: March 26, 2012Date of Patent: April 22, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Yoshiyuki Kurokawa
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Patent number: 8698715Abstract: A display device (10) includes an upper substrate (first substrate) (2), a lower substrate (second substrate) (3), and a conductive liquid (16) that is movably sealed in a display space (S) formed between the upper substrate (2) and the lower substrate (3). In the display device (10), an electrode member (f) for filling the conductive liquid (16) is provided in the display space (S) and configured so that a predetermined voltage can be applied thereto, and the conductive liquid (16) is filled in the display space (S) by applying the predetermined voltage to the electrode member (f).Type: GrantFiled: August 7, 2008Date of Patent: April 15, 2014Assignee: Sharp Kabushiki KaishaInventors: Shinichi Nakano, Akio Miyata, Tomoko Teranishi, Toshiki Matsuoka, Kazuhiro Deguchi
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Patent number: 8698852Abstract: A method for driving a display device including pixels each including a display element and a transistor is proposed. The driving method has an image production period and an image retention period. In the image production period, a video signal is input to each pixel and the gray level of the display element in each pixel is controlled in accordance with the video signal so that an image is produced. In the image retention period, a retention signal is input to each pixel and the gray level of the display element in each pixel is held so that the image produced in the image production period is retained. Deterioration of the transistor can be suppressed by making the absolute value of the potential difference between the gate and the second terminal of the transistor smaller in the image retention period than in the image production period.Type: GrantFiled: May 11, 2011Date of Patent: April 15, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Atsushi Umezaki
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Patent number: 8686971Abstract: Disclosed herein is a liquid crystal display device including a liquid crystal panel having a first substrate, a second substrate facing the first substrate, a liquid crystal layer disposed between the first substrate and the second substrate, and first and second electrodes formed on a surface side, of the first substrate, facing the second substrate, a transverse electric field being applied to the liquid crystal layer through the first and second electrodes, thereby displaying an image in a pixel area; wherein the first substrate includes: a light receiving element provided on the surface, of the first substrate, facing the second substrate, for receiving an incident light on a light receiving surface thereof, thereby forming data on the received light; and a planarizing film provided on the surface side, of the first substrate, facing the second substrate so as to cover the light receiving element.Type: GrantFiled: February 10, 2009Date of Patent: April 1, 2014Assignee: Japan Display West Inc.Inventors: Masafumi Kunii, Ryoichi Ito, Masanobu Ikeda
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Patent number: 8686972Abstract: It is an object to perform imaging a high-resolution image in a display device including a photosensor regardless of the intensity of incident light on the photosensor. A display device including a display panel which is provided a photosensor and having a function of imaging by a change of the sensitivity of the photosensor in accordance with the incident light is provided. The sensitivity of the photosensor is improved when the intensity of the incident light is low, so that the imaging accuracy is improved; therefore, misperception of contact is prevented and an obtained image can be clear.Type: GrantFiled: November 19, 2010Date of Patent: April 1, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Munehiro Kozuma, Yoshiyuki Kurokawa, Takayuki Ikeda
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Patent number: 8681089Abstract: A touch display comprising a first substrate formed with a common electrode; a second substrate formed with a gate line and a data line, wherein a first thin film transistor and a pixel electrode is provided in a pixel region defined by the gate line and the data line and the pixel region and the common electrode form a liquid crystal capacitor; a touch element provided in the pixel region in the second substrate and used to sense a touch voltage reflecting the change of the liquid crystal capacitance at a touch point; and a touch processing device connected with the touch element and used to obtaining a position coordinates of the touch point according to the touch voltage.Type: GrantFiled: March 4, 2010Date of Patent: March 25, 2014Assignee: Beijing BOE Optoelectronics Technology Co., Ltd.Inventors: Yinglong Huang, Zheng Wang
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Patent number: 8669954Abstract: A touch panel includes a substrate, scan lines, data output lines, a signal processing unit and touch sensing units. Each touch sensing unit includes a sensing electrode, a reference capacitor, an output circuit and a reset circuit. The sensing electrode is disposed in a breach of the sensing electrode. The reference capacitor, the output circuit and the reset circuit are disposed on the substrate and in the breach. The output circuit, the reset circuit, the reference capacitor and the sensing electrode are electrically coupled to a reference point. The output circuit is configured to output touch signals to the corresponding data output line. The signal processing unit is configured to obtain electric potential of the data output line and perform a corresponding processing step. When the touch sensing unit is out of working, the reference point is reset to a predetermined electric potential.Type: GrantFiled: June 29, 2011Date of Patent: March 11, 2014Assignee: Au Optronics Corp.Inventors: Hung-Wen Chou, Min-Feng Chiang, Jian-Shen Yu, Po-Yuan Liu
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Patent number: 8659573Abstract: A display is provided. The display includes electro-optical material arranged between first and second planes facing each other; a first substrate arranged on the first plane and including a conductor; first electrically conductive film arranged on the second plane; second electrically conductive film arranged outside an area sandwiched between the first and second planes; current detection circuit detects current on the second electrically conductive film; and control circuit that, during a time period the current is detected by the current detection circuit, applies substantially the same voltage as that applied to the second electrically conductive film to one of the conductor and the first electrically conductive film, which is arranged closer to the second electrically conductive film, and sets the other in a floating state, or applies substantially the same voltage as that applied to the second electrically conductive film to both the conductor and the first electrically conductive film.Type: GrantFiled: May 20, 2013Date of Patent: February 25, 2014Assignee: NLT Technologies, Ltd.Inventors: Hiroshi Haga, Jiro Yanase, Yoichi Kitagishi
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Patent number: 8654110Abstract: A matrix type display device including: a photosensor, provided in a display region, for outputting a signal corresponding to an intensity of light emitted to the photosensor; a TFT of n-channel type, the TFT serving as a source follower including a gate to which the signal is inputted; and light intensity detecting means for detecting the intensity of the light by detecting an output of the source follower, which is the TFT. In at least one embodiment, the TFT includes a drain to which a first pulse signal (Vpulse2) having a first pulse is inputted, the first pulse rising from a low level to a high level in a state where the signal is inputted to the gate of the TFT.Type: GrantFiled: April 30, 2009Date of Patent: February 18, 2014Assignee: Sharp Kabushiki KaishaInventors: Hajime Imai, Hideki Kitagawa, Shinya Tanaka
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Patent number: 8648844Abstract: For reduced power wastage, a transmissive display (100), comprises a backlight (106) and a valve (110) for modulating light from the backlight to create an image, and furthermore the transmissive display comprises: a connector (198) for connection with a connected viewer behavior detection means ((150, 152, 165), 160), and a power optimizer (120), having an input connection (C_i) to the viewer behavior detection means for receiving from it a behavior measuring signal (I_usr), and having an output (O_BL) for sending an optimal drive value (D_Lb) to the backlight (106) depending on the behavior measuring signal (I_usr).Type: GrantFiled: November 13, 2008Date of Patent: February 11, 2014Assignee: Koninklijke Philips N.V.Inventor: Mark Jozef Willem Mertens
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Patent number: 8648816Abstract: An information processing apparatus includes: a recognition section which recognizes the shape of an object being in contact with an operation screen of an operating section; a pressure detecting section which detects the pressure of the object on the operation screen; a threshold value setting section which sets a threshold value of the pressure, which is a value for determining a pressure operation on the operation screen, on the basis of the shape of the object recognized by the recognition section; and a determination section which determines whether or not a pressure operation has been performed on the operation screen on the basis of the pressure detected by the pressure detecting section and the threshold value set by the threshold value setting section.Type: GrantFiled: March 2, 2010Date of Patent: February 11, 2014Assignee: Sony CorporationInventors: Fuminori Homma, Tatsushi Nashida
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Patent number: 8648824Abstract: A flat panel display integrated with a touch screen panel according to an embodiment of the present invention includes: an upper substrate and a lower substrate each divided into a display region and first and second non-display regions around the display region; a plurality of sensing patterns in the display region of the upper substrate; a plurality of sensing lines in the first non-display region of the upper substrate; an FPC bonding pad unit including a plurality of bonding pads coupled with the sensing lines, in the second non-display region of the upper substrate; a sealant between the second non-display regions of the first substrate and the second substrate; and transparent conductive patterns arranged at a same distance from the sealant in the second non-display region of the upper substrate, the transparent conductive patterns overlapping the sealant.Type: GrantFiled: April 14, 2011Date of Patent: February 11, 2014Assignee: Samsung Display Co., Ltd.Inventor: Kyung-Jun Lee
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Patent number: 8641196Abstract: An image forming apparatus includes: a light emitting portion emitting light; an optical scanning portion scanning a display surface with the light emitted from the light emitting portion; and a changing portion rotating an image formed on the display surface through the scanning with the light by using a position near the center as a rotation axis to change an orientation of the image.Type: GrantFiled: April 1, 2011Date of Patent: February 4, 2014Assignee: Seiko Epson CorporationInventor: Shuichi Wakabayashi
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Patent number: 8643594Abstract: A display device with a touch pad function is provided which reduces the elements required to form a photo sensor while still accurately detecting input coordinate positions. The display device includes a display part on which a plurality of pixels are arranged in a matrix array, a plurality of photo detection circuits which are arranged in a matrix array in the inside of the display part, wherein each photo detection circuit of the plurality of photo detection circuits includes: a photo sensor which converts an incident light into a optical current corresponding to intensity of the incident light, an integral capacitance which integrates the optical current converted by the photo sensor, and a comparator to which a voltage of the integral capacitance is inputted, and the comparator includes a transistor of an open drain output type with a grounded source.Type: GrantFiled: April 3, 2012Date of Patent: February 4, 2014Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Hideo Sato, Shigeyuki Nishitani, Takayuki Nakao, Naruhiko Kasai, Hajime Akimoto
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Patent number: 8638462Abstract: In an image display apparatus, when image data is transferred from an LCD controller to an LCD through a transmission cable having a plurality of signal lines and is displayed on a screen, the image data is divided sequentially by a plurality of lines from a front line so as to correspond to the number of signal lines and allocates the divided image data to the signal lines such that image data of which signal change is larger is allocated to a signal line which is closer to the ground line to transfer the image data. Therefore, the entire radiation noise which is generated can be reduced while maintaining quality of signals.Type: GrantFiled: April 20, 2011Date of Patent: January 28, 2014Assignee: Seiko Epson CorporationInventor: Michio Yoshitake
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Patent number: 8638346Abstract: A source line driver circuit and a display apparatus including the same are provided. The source line driver circuit includes a logic block configured to receive serialized image data, to change the number of bits of the image data, and to output image data having the changed number of bits, and a source channel driver unit configured to receive the image data having the changed number of bits and to provide at least one analog voltage corresponding to the received image data to source lines. Accordingly, the number of necessary switches may be reduced, and therefore, the required area and/or current consumption may also be reduced.Type: GrantFiled: September 25, 2009Date of Patent: January 28, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Jae Hyuck Woo, Jae Goo Lee, Won Sik Kang
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Patent number: 8633899Abstract: A display device includes a plurality of touch sensors and a touch sensor controller. The touch sensor controller defines sensing units. Each of the sensing units includes at least two touch sensors. The touch sensor controller generates coordinates information of the sensing unit when all of the touch sensors of the sensing unit are generating an output signal or at least one of the touch sensors of the sensing unit is generating an output signal.Type: GrantFiled: November 16, 2007Date of Patent: January 21, 2014Assignee: Samsung Display Co., Ltd.Inventors: Yoon Sung Um, Jae Jin Lyu, Seung Beom Park
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Patent number: 8633708Abstract: A current calibration method and the associated control circuit are provided. The method includes: providing a predetermined voltage to the differential output for obtaining an accurate current passing through the panel resistor during a calibration procedure and, providing a driving current to the differential output according to the accurate current during a normal operation procedure.Type: GrantFiled: May 30, 2013Date of Patent: January 21, 2014Assignee: MStar Semiconductor, Inc.Inventors: Chih-Tien Chang, Ju-Ming Chou
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Patent number: 8624854Abstract: A liquid crystal display panel includes a pixel electrode to apply a voltage to a liquid crystal layer disposed between the pixel electrode and an opposed electrode, a thin film transistor connected to the pixel electrode, a scanning line to supply a gate signal to the thin film transistor, a first coordinate detection line disposed parallel to the scanning line, a first coordinate detection electrode formed closer to the liquid crystal layer than the scanning line and the first coordinate detection line, and a first insulating film formed as a layer between the first coordinate detection line and the first coordinate detection electrode. The first insulating film is provided with a contact hole to electrically connect the first coordinate detection line and the first coordinate detection electrode.Type: GrantFiled: June 30, 2010Date of Patent: January 7, 2014Assignee: Casio Computer Co., Ltd.Inventor: Kazuhiro Sasaki
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Patent number: 8624845Abstract: A touch screen is described. The touch screen is configured to have an array of conductive, optically transmissive sensor elements coupled to sensor circuitry. The sensor elements are disposed over a display to have a single layer of conductive, optically transmissive material positioned over pixels of the display.Type: GrantFiled: September 26, 2008Date of Patent: January 7, 2014Assignee: Cypress Semiconductor CorporationInventor: Edward L. Grivna
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Patent number: 8619020Abstract: A display apparatus includes a display panel, a plurality of sensors, a read-out circuit, and a control circuit. The display panel includes a plurality of pixels receiving a data signal having a polarity reversed with respect to a common voltage to display an image. The sensors sense light to output sensing signals. The sensors may be integrated into the display panel. The read-out circuit is charged with the sensing signals generating charged signals in response to a sampling signal generated during a period in which the common voltage has a predetermined reference voltage level. The control circuit calculates a position on the display panel from the charged signals received signals from the read-out circuit.Type: GrantFiled: April 1, 2010Date of Patent: December 31, 2013Assignee: Samsung Display Co., Ltd.Inventors: Jee-Hoon Jeon, Hyoung Sik Nam, Jae-Ho Oh
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Patent number: 8605038Abstract: A liquid crystal display includes an upper substrate, a lower substrate, and a liquid crystal layer interposed between the upper substrate and the lower substrate. The upper substrate includes a first insulating substrate, a transparent conductive layer on the first insulating substrate, and a first polarizer on the transparent conductive layer. The lower substrate includes a second insulating substrate, a second polarizer on the second insulating substrate, and a thin film transistor layer. The second insulating substrate is between the thin film transistor layer and the second polarizer. The transparent conductive layer allows an electric field to be formed on the first polarizer, so that a position signal input unit, which contacts the first polarizer, is capacitively coupled with the transparent conductive layer.Type: GrantFiled: November 12, 2008Date of Patent: December 10, 2013Assignee: Samsung Display Co., Ltd.Inventor: Jong-Whan Cho
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Patent number: 8587511Abstract: A liquid crystal display panel includes a first substrate, a second substrate and a liquid crystal layer. The first substrate includes a plurality of pixels and a plurality of sensing parts. Each of the sensing parts generates an output signal containing location information in response to an input signal. The location information indicates a location where the input signal is inputted. The second substrate is connected to the first substrate. The second substrate faces the first substrate. The liquid crystal layer is interposed between the first substrate and the second substrate. The liquid crystal display device needs no additional touch panel, so that no air space exists between the liquid crystal display panel and the touch panel. Therefore, a display quality is enhanced.Type: GrantFiled: October 30, 2003Date of Patent: November 19, 2013Assignee: Samsung Display Co., Ltd.Inventors: Won-Sang Park, Kee-Han Uh, Hyung-Guel Kim, Jong-Hwan Cho, Sang-Jin Park, Jae-Hoon Jung, Young-Bae Jung
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Patent number: 8587448Abstract: A sensor activated broken screen simulator is provided for simulating a screen breaking in response to a detected motion. The simulator includes a frame configured for coupling to a monitor. The monitor has a viewing portion and the frame is positioned such that the frame extends around the viewing portion of the monitor. A screen is coupled to and positioned in the frame such that the screen is positioned over the viewing portion of the monitor when the frame is coupled to the monitor. The screen is transparent when inactive but displays an image of broken glass when activated. A sensor is coupled to the frame and operationally coupled to the screen to activate the screen upon detection of a pre-determined condition.Type: GrantFiled: April 11, 2011Date of Patent: November 19, 2013Inventor: Edward H. Culleny
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Patent number: 8581860Abstract: A touch panel and a touch-sensitive display device capable of providing three-dimensional contact detection are provided. The touch panel includes a first conductive layer, a second conductive layer, and an insulating layer between the first and second conductive layers. The insulating layer includes a polymer dispersed liquid crystal (PDLC) film.Type: GrantFiled: February 26, 2010Date of Patent: November 12, 2013Assignees: Innocom Technology (Shenzhen) Co., Ltd., Chimei Innolux CorporationInventor: Kai Meng