Abstract: The present invention provides a display device, a method for producing a display device, and a method for inspecting a display device, which are capable of inspecting, after bonding of a display panel and a FPC to each other, a conductive line formed near an edge of the display panel and/or an edge of the FPC for open circuits, partial open circuits, and short circuits. The display device includes: a display panel; a flexible printed circuit connected to the display panel; and an inspection line formed along one or both of an edge of the display panel and an edge of the flexible printed circuit and including a capacitance-forming portion that exhibits capacitance.

Abstract: A display device can extend a pause period by using a preset second setting period as a unit when a length of the pause period exceeds the second setting period. Further, detection of a touch position and specification of coordinates are interrupted when a vertical synchronization signal is received while specifying the coordinates of the touch position, and coordinates remaining in a coordinate calculation unit are discarded.

Abstract: A liquid crystal panel is provided which is capable of performing displaying with sufficiently high quality while reducing power consumption. The liquid crystal panel 20 includes a plurality of pixel electrodes, a plurality of counter electrodes which are smaller in number and larger in individual size than the plurality of pixel electrodes, a liquid crystal layer disposed between the plurality of pixel electrodes and the plurality of counter electrodes, and a control unit configured to control a voltage applied to the plurality of pixel electrodes and a voltage applied to the plurality of counter electrodes. In a predetermined case, the control unit operates in a power saving operation mode in which the control unit performs control such that a fixed voltage is applied to the plurality of pixel electrodes and a voltage corresponding to an image signal is applied to the plurality of counter electrodes.

Abstract: The power consumption of an apparatus including a touch panel is reduced. In a touch panel control device (1) including a sensor drive section (22) and a liquid crystal drive controller (10), the sensor drive section (22) makes a detection sensitivity during a pause period lower than a detection sensitivity during an update period, the pause period being a period in which the liquid crystal drive controller (10) does not update the image that is displayed on a liquid crystal display panel (40), the update period being a period in which the liquid crystal drive controller (10) updates the image that is displayed on the liquid crystal display panel (40).

Abstract: A touch panel display device includes an active matrix substrate and a control unit. The active matrix substrate is provided with gate lines, pixel electrodes connected to the gate lines, counter electrodes disposed to form a matrix, and touch sensor wires connected to the counter electrodes. The control unit alternately switches, during one frame period, between a gate scan period of scanning the gate lines and a sensor scan period of scanning the counter electrodes by a segment SEG and detecting electrostatic capacitance by. The one frame period includes a plurality of gate scan periods and a plurality of sensor scan periods. The control unit scans each of the segments in a first scan mode of completing touch detection of scanning all the segments in the one frame period a number of times other than an integer.

Abstract: A touch panel display device includes an active matrix substrate and a control unit. The active matrix substrate is provided with gate lines, pixel electrodes connected to the gate lines, counter electrodes disposed to form a matrix, and touch sensor wires connected to the counter electrodes. The control unit alternately switches, during one frame period, between a gate scan period of scanning the gate lines and a sensor scan period of scanning the counter electrodes by a segment SEG and detecting electrostatic capacitance by. The one frame period includes a plurality of gate scan periods and a plurality of sensor scan periods. The control unit scans each of the segments in a first scan mode of completing touch detection of scanning all the segments in the one frame period a number of times other than an integer.

Abstract: A display controller controls changing timing of a waveform of each of gate clock signals (GCK1, GCK2) so that a display driving operation is performed after the lapse of a relatively short time from a starting point of time of a horizontal scanning period in odd-numbered horizontal scanning periods (Ho), and that a display driving operation is performed after the lapse of a relatively long time from a starting point of time of a horizontal scanning period in even-numbered horizontal scanning periods (Ho). A touch panel controller outputs a pulse of a touch drive signal (STD) so that a position detection operation on a touch panel is started in a stable period after an end of the display driving operation in each of the odd-numbered horizontal scanning periods (Ho).

Abstract: The present invention provides a display device, a method for producing a display device, and a method for inspecting a display device, which are capable of inspecting, after bonding of a display panel and a FPC to each other, a conductive line formed near an edge of the display panel and/or an edge of the FPC for open circuits, partial open circuits, and short circuits. The display device includes: a display panel; a flexible printed circuit connected to the display panel; and an inspection line formed along one or both of an edge of the display panel and an edge of the flexible printed circuit and including a capacitance-forming portion that exhibits capacitance.

Abstract: A display device, with a built-in touch sensor, including a display unit where sensor electrodes are provided, and a signal processing unit configured to process detection signals obtained from the sensor electrodes is provided with a segment-size switching unit configured to perform electrical connection and electrical disconnection of sensor electrodes such that a size of a segment serving as a unit of processing the detection signal becomes a size depending on an instruction signal. For example, the segment-size switching unit is configured by a switch circuit configured to switch a connection relationship between a plurality of sensor electrodes and a plurality of analog front ends, and a switching control unit configured to control operation of the switch circuit depending on the instruction signal.

Abstract: Provided is a technique of making it possible to draw an image according to a locus of a finger or the like, irrespective of a frame rate. A display device intermittently performs image display and touch position detection, and controls a frame frequency so that the frame frequency is variable. The display device includes: a display panel that includes a plurality of gate lines, and a touch detection element for the touch position detection; a gate line driving unit for scanning the gate lines; a touch detection driving unit that detects a touch position on the display panel; and a control unit that controls a scanning frequency for the gate lines. The touch detection driving unit performs the touch position detection at a constant frequency. The control unit adjusts the scanning frequency for the gate lines in one vertical scanning period, based on the frame frequency and the frequency for the touch position detection. The gate line driving unit scans the gate lines in accordance with the scanning frequency.

Abstract: Provided is an in-cell-type touch-panel-equipped display device that can perform a touch position detection operation without being influenced by potential fluctuations due to image display. The touch-panel-equipped display device includes a plurality of counter electrodes that, together with pixel electrode, form electrostatic capacitances therebetween, and touch sensor lines connected to the counter electrodes. During one scanning operation, a controller supplies a sensor driving signal to the touch sensor lines connected to the counter electrodes of one segment, among the counter electrodes, one segment being composed of a series of the counter electrodes arrayed in a first direction in which gate lines extend. Further, the controller, after supplying the selection signal to at least a part of the gate lines, supplies the sensor driving signal to the touch sensor line connected to the counter electrode of the segment at a position far from the gate line to which the selection signal is supplied last.

Abstract: The present invention aims to allow a liquid crystal display device with a built-in touch sensor using a common electrode as an electrode for touch detection to reduce occurrence of flicker when switching from the sleep period to the display period is performed. At least during a part of a sleep period, a display drive portion performs image data write processing in which a voltage is applied to a pixel electrode in a state in which a backlight is maintained in a light-out state by a backlight control portion. For example, the display drive portion applies a voltage corresponding to one of a specific image and a black image to a pixel electrode every predetermined period throughout the sleep period. Further, for example, the display drive portion applies a voltage corresponding to a display image during a period immediately before switching to the display period is performed in the sleep period.

Abstract: A technique is provided that enables to reduce false detection on a touch panel, without limiting the time when the display panel is driven. In a touch-panel-equipped display device 1, a display control unit 30 sequentially selects gate lines, and data signals are supplied to data lines, whereby a display panel 20 is driven. A transmission circuit 410 supplies a pulse signal to transmission electrode portions 11 at timings based on a horizontal synchronization signal. A controller 400 detects a contact position on the touch panel 10, based on output signals output from a reception circuit that correspond to capacitances between the transmission electrode portions 11 and reception electrode portions 12. The controller 400 adjusts the timings of supplying the pulse signal from the transmission circuit 410 so that the point of time when the voltage of the pulse signal changes should not coincide with the period when noise of the display device due to the supply of data signals occurs.

Abstract: The power consumption of an apparatus including a touch panel is reduced. In a touch panel control device (1) including a sensor drive section (22) and a liquid crystal drive controller (10), the sensor drive section (22) makes a detection sensitivity during a pause period lower than a detection sensitivity during an update period, the pause period being a period in which the liquid crystal drive controller (10) does not update the image that is displayed on a liquid crystal display panel (40), the update period being a period in which the liquid crystal drive controller (10) updates the image that is displayed on the liquid crystal display panel (40).

Abstract: A touch panel is realized that is able to decrease the amount of dead space at the periphery of the touch panel and that has highly accurate touch panel sensitivity. In a touch panel, Y direction conductive patterns are arranged so as to be separated from wiring patterns in Y direction conductive pattern regions between electrode units of X direction conductive patterns. As a result, in this conductive sheet, it is possible to appropriately prevent the occurrence of parasitic capacitance resulting from the Y direction conductive patterns and the wiring patterns. Therefore, in a touch panel device or the like that uses such a touch panel, it is possible to effectively prevent the generation of noise that overlaps sense signals as a result of the above-mentioned parasitic capacitance, thereby making it possible to realize highly accurate touch panel sensitivity.

Abstract: A sensor-equipped display device (1) includes driving lines (DRL) arrayed in a first direction in an area that overlaps the screen; detection lines (SNL) arrayed in a second direction in the area that overlaps the screen; and a detection control unit (30) that outputs driving signals each of which includes a plurality of pulses, to the driving lines, respectively, and detects signals of the detection lines in correspondence to the diving signals. The detection control unit (30) outputs driving signals each of which includes a plurality of pulses, simultaneously to 2N driving lines (N is a natural number) that are sequentially arrayed in the first direction. Rising of the pulses of the driving signals for the N driving lines out of the 2N driving lines, and falling of the pulses of the driving signals for the other N driving lines, occur at the same time.

Abstract: A technique is provided that enables to reduce false detection on a touch panel, without limiting the time when the display panel is driven. In a touch-panel-equipped display device 1, a display control unit 30 sequentially selects gate lines, and data signals are supplied to data lines, whereby a display panel 20 is driven. A transmission circuit 410 supplies a pulse signal to transmission electrode portions 11 at timings based on a horizontal synchronization signal. A controller 400 detects a contact position on the touch panel 10, based on output signals output from a reception circuit that correspond to capacitances between the transmission electrode portions 11 and reception electrode portions 12. The controller 400 adjusts the timings of supplying the pulse signal from the transmission circuit 410 so that the point of time when the voltage of the pulse signal changes should not coincide with the period when noise of the display device due to the supply of data signals occurs.

Abstract: In a touch panel in which lines connected to electrodes used for detecting a touched position are arranged in an area where a touched position can be detected, the accuracy of detection of a touched position is improved. The touch panel includes a substrate; a group of electrode pairs arrayed in a predetermined direction on the substrate; a terminal unit arranged closer to one of ends in the predetermined direction on the substrate, than the group of electrode pairs is; a group of lead-out lines arranged on the substrate, for electrically connecting the group of electrode pairs and the terminal unit; and a control unit electrically connected with the terminal unit, the control unit supplying a signal through the group of lead-out lines to the group of electrode pairs, and detecting an amount of change in charges from each electrode pair. The control unit includes a provisional decision part, and a correction part.

Abstract: A touch panel with improved accuracy for detecting a touched position is provided. A touch panel 10 includes a substrate 18; a plurality of electrodes 24A, 24B provided on the substrate 18; a control unit (controller 16) that detects a touched position on the substrate 18; and a plurality of lead-out lines 22A, 22B that electrically connect the control unit and the electrodes 24A, 24B. At least a part of the lead-out lines 22A, 22B is arranged in an area on the substrate 18 where a touched position can be detected.

Abstract: A touch panel is realized that is able to decrease the amount of dead space at the periphery of the touch panel and that has highly accurate touch panel sensitivity. In a touch panel, Y direction conductive patterns are arranged so as to be separated from wiring patterns in Y direction conductive pattern regions between electrode units of X direction conductive patterns. As a result, in this conductive sheet, it is possible to appropriately prevent the occurrence of parasitic capacitance resulting from the Y direction conductive patterns and the wiring patterns. Therefore, in a touch panel device or the like that uses such a touch panel, it is possible to effectively prevent the generation of noise that overlaps sense signals as a result of the above-mentioned parasitic capacitance, thereby making it possible to realize highly accurate touch panel sensitivity.