Patent application number | Description | Published |
20090060365 | IMAGE DISPLAY DEVICE, IMAGE PROCESSING CIRCUIT, AND IMAGE PROCESSING METHOD - To provide a processing method for reducing motion blur while increasing resolution. By performing a super-resolution process, a resolution-increased image is obtained from an input image in multiple frames. By performing an enlargement process, an enlarged image is obtained from the input image in one frame. A high-frequency image is obtained by subtracting the enlarged image from the resolution-increased image. A high spatial frequency-emphasized image is obtained by adding the high-frequency image to the resolution-increased image. The enlarged image and high spatial frequency-emphasized image are displayed alternately every half frame. | 03-05-2009 |
20090284514 | PLASMA DISPLAY APPARATUS AND ITS DRIVE CIRCUIT - In a plasma display apparatus and its drive circuit, a period that capacitance Cxa formed between an address electrode and an X-discharge maintaining electrode and capacitance Cya formed between the address electrode and a Y-discharge maintaining electrode are charged is provided when the address electrode is driven so that the address electrode is set to high-impedance state during a discharge maintaining period to reduce apparent capacitance. Furthermore, the charge period is set in a power withdrawing period and thereafter the address electrode is set to high-impedance state to change final arrival potential for power withdrawal to a discharge maintaining voltage. | 11-19-2009 |
20100060609 | Touched Position Detection Method for Touch Panel - In a touched position detection method for a touch panel for detecting a touched position, based on measured values by a plurality of sensors, presence of a touch is determined when a measured value by a sensor exceeds a touch threshold. As a touch threshold, a value which cannot be attained due to a mere noise but can due to presence of a touch is set. With respect to sensors located in the vicinity of a sensor showing a high measured value, a higher weighted value is applied to modify a measured value in a touched position calculation process than that to be applied to other sensors. | 03-11-2010 |
20100085322 | COORDINATE INPUT DEVICE AND DISPLAY DEVICE WITH THE SAME - A capacitance detection device of a capacitance system includes: a capacitance sensor electrode for detecting a capacitance; a power source for supplying charges to be charged in the capacitance sensor electrode; an electric charge storage capacitor in which an amount of charges to be charged therein changes according to the electric charges charged in the capacitance sensor electrode; and a switch for changing a reference potential of the electric charge storage capacitor. The reference potential of the electric charge storage capacitor is changed in a period of measuring the capacitance. | 04-08-2010 |
20100134440 | DISPLAY DEVICE - The display device is provided with X electrodes XP and Y electrodes YP which cross with a first insulating layer in between and a number of Z electrodes which are electrically floating from each other with a second insulating layer in between. The Z electrodes are arranged so that each Z electrode overlaps both an adjacent X electrode and Y electrode. The pad portion of a first X electrode has such a form that the area is maximum in the vicinity of the fine wire portion of the first X electrode and the area is minimum in the vicinity of the fine wire portion of an adjacent second X electrode, and the area of the pad portion is smaller towards the direction in which the distance increases away from the vicinity of the fine wire portion of the first X electrode. A pulse signal is sequentially applied to one set of X electrodes or Y electrodes. | 06-03-2010 |
20100259504 | TOUCH-PANEL DEVICE - Provided is a touch-panel device capable of detecting a touched position with high accuracy even when a touched area extends off an electrode area. According to the present invention, the touched area is assumed to be, for example, a circular in shape. A width in an X direction (overlap width (X | 10-14-2010 |
20100295810 | SENSORING APPARATUS OF PROXIMITY AND CONTACT, AND DISPLAY DEVICES - A sensor apparatus for detecting contact or proximity of an object includes a calculation section for separating a plurality of points of the contact or the proximity that are generated simultaneously, and calculating individual sets of positional coordinates, and the calculation section includes an analysis section for determining, based on a spatial distribution of signal intensity obtained through detection, a condition for separating the spatial distribution of the signal intensity into a plurality of regions. | 11-25-2010 |
20110090175 | TOUCH PANEL AND DISPLAY DEVICE USING THE SAME - Provided is a capacitive touch panel, including: a plurality of coordinate detection electrodes (XP | 04-21-2011 |
20110205181 | INPUT APPARATUS AND DISPLAY SYSTEM - An input apparatus includes: a transparent substrate with which an object is brought into contact; a rectangular single sheet electrode formed on the transparent substrate; first detection means which inputs a measurement signal to the rectangular single sheet electrode from one of two opposing perimeter portions along a first direction, and takes out the measurement signal from another one of the two opposing perimeter portions, to detect a contact point of the contacting object along the first direction; and second detection means which, after the contact point in the first direction is detected, inputs a measurement signal to the rectangular single sheet electrode from one of two opposing perimeter portions along a second direction, and takes out the measurement signal from another one of the two opposing perimeter portions, to detect the contact point along the second direction. | 08-25-2011 |
20110216033 | COORDINATE INPUT DEVICE AND DISPLAY DEVICE INCLUDING THE SAME - Provided is a coordinate input device including: a coordinate input unit having a plurality of first detection electrodes and a plurality of second detection electrodes; an electrode drive circuit that applies a drive signal to one or more of the detection electrodes; a capacitance detection circuit that detects a capacitance of the first and/or second detection electrode; means for selecting one or more of the detection electrodes to which the drive signal is not applied from among the detection electrodes which are disposed in parallel to the detection electrodes to which the drive signal is applied, as a reference electrode; means for detecting a capacitance of the selected reference electrode; means for correcting a capacitance detection result of the capacitance detection circuit on the basis of the detected capacitance of the reference electrode; and an input coordinate computing circuit that calculates an input coordinate from the corrected capacitance detection result. | 09-08-2011 |
20120075243 | Display Device - A touch panel of capacitance type includes plural X-electrodes, plural Y-electrodes, and a Z-electrode. Each of the X-electrode and the Y-electrode is formed to have pad portions and thin line portions alternately arranged in an extending direction. The pad portion of the X-electrode and the pad portion of the Y-electrode are arranged without being overlapped in a planar view. The Z-electrode is electrically in a floating state, and formed to be overlapped with both the adjacent X-electrode and the Y-electrode in a planar view. The touched position is calculated based on a local minimal point as an intersection with the interelectrode capacitance value that is equal to or smaller than each of the interelectrode capacitance values of four peripheral intersections among those at the intersections between the plural X-electrodes and the plural Y-electrodes. | 03-29-2012 |
20120081332 | DISPLAY DEVICE EQUIPPED WITH TOUCH PANEL - Provided is a display device equipped with a touch panel, including a front panel arranged above a capacitive touch panel at a predetermined distance away therefrom, in which the touch panel includes a plurality of X electrodes and a plurality of Y electrodes, and the X electrodes are sequentially applied with pulse signals and the Y electrodes receive the pulse signals. When an arbitrary point on the front panel is touched, the touch panel computes a touched point on the touch panel by using both the received pulse signals obtained from the Y electrodes in a case where the front panel is not deformed and the received pulse signals obtained from the Y electrodes in a case where the front panel is deformed. With this, an erroneous operation in which a measurement value is lowered to finally disappear is prevented. | 04-05-2012 |
20130027330 | TOUCH PANEL AND DISPLAY DEVICE WITH A BUILT-IN TOUCH PANEL - Provided is a touch panel including: a plurality of scanning electrodes formed on a display panel; a plurality of detecting electrodes intersecting with the plurality of scanning electrodes, the plurality of detecting electrodes being formed on the display panel; a first unit for sequentially connecting a constant current source to each of the plurality of scanning electrodes for each one scanning period; and a second unit for detecting a touch position on the display panel based on a variation of a current detected at each of the plurality of detecting electrodes. One of the each of the plurality of scanning electrodes and the each of the plurality of detecting electrodes is formed on the display panel surface on a viewer side, and another of the each of the plurality of scanning electrodes and the each of the plurality of detecting electrodes is formed inside the display panel. | 01-31-2013 |
20130027333 | TOUCH PANEL - Provided is a touch panel with improved anti-noise performance. A continuous drive pulse train is input to a plurality of scanning electrodes for each one scanning period in turns, and a detection pulse train generated at detection electrodes which intersects the scanning electrodes is detected. The detection pulse train is sampled at different intervals to generate a plurality of data sequences. The plurality of data sequences may be generated from the detection pulse train over a plurality of frame periods. A signal strength of each frequency component is compared between the frequency spectra of the plurality of data sequences, and a frequency spectrum in which frequency components having different strengths have been corrected is generated. A detection signal is generated from the corrected frequency spectrum. | 01-31-2013 |
20130027347 | TOUCH PANEL - Provided is a touch panel which completes touch detection within a specified time even when the maximum number of touch points is set to be large. A control portion assigns priorities for being given a high coordinate precision to the respective touch points based on the state of the touch points. The control portion selects coordinate calculation algorithms having coordinate precisions corresponding to the priorities of the respective touch points from among a plurality of coordinate calculation algorithms, and calculates required calculation time for calculating coordinates of all the touch points. The control portion determines the priorities so that the calculated required calculation time is equal to or shorter than a specified time. The control portion selects coordinate calculation algorithms corresponding to the priorities and calculates the coordinates of the respective touch points. | 01-31-2013 |
20130207914 | LIQUID CRYSTAL DISPLAY DEVICE WITH TOUCH PANEL - A liquid crystal display device with a touch panel includes: pixel electrodes which is applied a electrical potential corresponding to a gradation value in respective pixels; common electrodes that are a plurality of electrodes which extend in one direction; a liquid crystal layer having a liquid crystal composition whose orientation is changed according to an electric field developed by the pixel electrodes and the common electrodes; and detection electrodes that are a plurality of electrodes which extend in another direction different from the one direction, and detect a touch position on the panel. The common electrodes include a first electrode which is applied a detection potential for detecting the touch position on the panel, and a second electrode to which a potential different from the detection potential is applied during a period in which the detection potential is applied. | 08-15-2013 |
20130278516 | DISPLAY DEVICE - Provided is a display device that includes a display panel; and a touch panel integrated in the display panel, wherein the touch panel has a plurality of scanning electrodes, a plurality of detection electrodes that intersects with the plurality of scanning electrodes, drive signal supply unit for inputting a drive signal to each of the scanning electrodes, detection unit for acquiring a detection signal from each of the detection electrodes, touch position detection unit for detecting a touch position of an detection object based on the detection signal when the drive signal is sequentially input to each of the scanning electrodes from the drive signal supply unit, and approach detection unit for detecting that the detection object approaches the touch panel based on the detection signal when a scanning voltage is collectively input to all of the scanning electrodes from the drive signal supply unit. | 10-24-2013 |
20130278564 | DISPLAY DEVICE - A display device includes a display panel and a touch panel built in the display panel. The touch panel includes a sensitivity correcting unit configured to correct the sensitivity of the touch panel. The sensitivity correcting unit includes a difference acquiring unit configured to acquire a signal difference (S1−S2) between a detection signal S1 acquired by detection electrodes when a driving signal V1 is input to scanning electrodes from a driving-signal supplying unit and a detection signal S2 (S1>S2) acquired by the detection electrodes when a driving signal V2 (V1>V2) different from the driving signal V1 is input to the scanning electrodes from the driving-signal supplying unit and a parameter changing unit configured to change parameters of at least one of the driving-signal supplying unit and a detecting unit when the signal difference (S1−S2) is equal to or smaller than a predetermined threshold. | 10-24-2013 |
20140015795 | TOUCHED POSITION DETECTION METHOD FOR TOUCH PANEL - A static capacitance type touch panel, a control unit electrically connected with X and Y electrodes for detecting a touch position based on a measured value of a static capacitance between the X and Y electrodes. The control unit includes a predetermined touch threshold for detecting a peak, a near-peak range and a non-near-peak range, a first parameter for determining a value of the near peak range, and a second parameter for determining a value of the non-near-peak range. The first and second parameters are respectively predetermined for reduction of a noise influence from the measured value of the static capacitance between the X electrode and the Y electrode. | 01-16-2014 |
20140232684 | Coordinate Input Device and Display Device Including the Same - A coordinate input device includes: a coordinate input unit having a plurality of first detection electrodes and a plurality of second detection electrodes; an electrode drive circuit that applies a drive signal to one or more of the detection electrodes; a detection circuit that detects a signal of the first and/or second detection electrode; a selection circuit for selecting one or more of the detection electrodes to which the drive signal is not applied from among the detection electrodes which are disposed in parallel to the detection electrodes to which the drive signal is applied, as a reference electrode; a detection circuit for detecting a signal of the selected reference electrode; an input coordinate computing circuit for correcting a detection result of the detection circuit on the basis of the detected capacitance of the reference electrode and for calculating an input coordinate from the corrected detection result. | 08-21-2014 |
20140285470 | Touch Sensing Method for Touch Panel - A touch sensing method, for sensing a touch point on a touch panel, includes the steps of measuring capacitances of the touch panel, detecting touch points on the touch panel based on the capacitance, determining tentative coordinates of the respective detected touch points, assigning priorities for a given high coordinate precision to the respective touch points based on a state of the touch points, selecting coordinate calculation algorithms corresponding to the assigned priorities by the respective touch points, estimating a calculation time necessary for calculating the coordinates of the touch points detected, determining whether the calculation time estimated is within a specified time or not, and calculating the coordinates of the respective touch points using the selected coordinate calculation algorithms corresponding to the assigned priorities when the calculation time estimated calculation time is within the specified time. | 09-25-2014 |