Japan Display Inc.

Jin Ota

Hidetoshi Komatsu

Hiroshi Mizuhashi

Kohei Azumi

Makoto Hayashi

Koji Noguchi

Kojiro Ikeda

Masaaki Kabe

Ryutaro Nitobe

Tsutomu Takabayashi

Nobuhiko Yokoo

Takashi Yoshii

According to an aspect, a display device includes an image display panel including: sub-pixel rows, in each of which sub-pixels for displaying different colors are periodically arrayed in a first direction, are regularly arranged in a second direction different from the first direction; signal lines in parallel to sub-pixel columns in which the sub-pixels are successively arranged in the second direction; and scan lines that sequentially select each sub-pixel row. Each of m (integer &#x2265;2) selector signals selects n (integer &#x2265;1) pairs of the signal lines each supplied with two signals each having a mutually reverse polarity, within a period during which each sub-pixel row is selected by a corresponding scan line, and a sum of potential changes of the n pairs of the signal lines selected by each selector signal is substantially zero when each sub-pixel row is sequentially selected by the corresponding scan line.

Display device

According to one embodiment, the touch drive device includes a plurality of drive electrodes arranged side by side to extend in a single direction, a detection electrode which extends in a direction crossing the direction in which the drive electrodes extend, and generates capacitances at intersections of the detection electrode and the drive electrodes, and a driver (DDI) which groups the drive electrodes into a plurality of drive electrode portions each including at least one drive electrode, and performs a touch scanning drive by supplying a touch drive signal (TSVCOM) having a pulse waveform for detection of a closely situated external object to a target drive electrode portion which is a selected one of the drive electrode portions. The number of the drive electrodes included in each of the drive electrode portions and the target drive electrode portion to which the touch drive signal. (TSVCOM) is supplied can be designated.

Touch drive device

According to one embodiment, a display device includes a display panel configured to perform display operation based on a pixel signal in a display period, a detector configured to perform touch detection operation in touch detection periods, and a driver configured to control frame operations. The driver is configured to control a first frame operation in a first frame periods including the display period, a first touch detection period and a first display adjustment period, and control a second frame operation in a second frame periods including the display period, a first touch detection period and a second display adjustment period. The second display adjustment period is longer than the first display adjustment period and includes the second touch detection period.

Display device having touch detection function and method

According to one embodiment, a display device includes a display panel, switching elements, a power supply, a controller and a noise suppression circuit. The display panel displays an image. The switching elements supply a pixel signal to the display panel. The power supply supplies a power source voltage to the switching elements. The controller switches between a display period during which the display panel displays an image and a non-display period during which the display panel does not display an image. The noise suppression circuit preliminarily reduces a potential difference between the switching elements and the power supply when the controller switches between the display period and the non-display period.

According to one embodiment, the touch drive device includes a plurality of drive electrodes arranged side by side to extend in a single direction, a detection electrode which extends in a direction crossing the direction in which the drive electrodes extend, and generates capacitances at intersections of the detection electrode and the drive electrodes, and a driver (DDI) which groups the drive electrodes into a plurality of drive electrode portions each including at least one drive electrode, and performs a touch scanning drive by supplying a touch drive signal (TSVCOM) having a pulse waveform for detection of a closely situated external object to a target drive electrode portion which is a selected one of the drive electrode portions. The number of the drive electrodes included in each of the drive electrode portions and the target drive electrode portion to which the touch drive signal (TSVCOM) is supplied can be designated.

According to one embodiment, a display device includes a display unit and a driver unit. The driver unit includes a display drive unit, a power supply unit and a control unit. The control unit instructs a display period in which the image is displayed in the display unit and a non-display period in which the image is not displayed to the display drive unit, and instructs mitigation driving which mitigates a difference in an electrical load of the display drive unit between the display period and the non-display period to the power supply unit in the non-display period.

Display device and method of driving the same

According to one embodiment, the display device includes a display panel and touchsensor, the touchsensor outputs a detected signal from detection electrode. An energy saving control section sets a first period in which the detected signal is to be captured, and a second period which is a period except the first period, and controls, in the first period, at least power supply voltage of an image processing section, a panel control section and the display panel to an off-state or to a low voltage.

Display device equipped with input sensor and control method of display device

According to one embodiment, a display device includes a plurality of display elements arranged in a matrix, a plurality of scanning lines, a plurality of signal lines, and a controller configured to control display by sequentially supplying an image signal and a control signal to the plurality of signal lines and the plurality of scanning lines, respectively, wherein the controller repeats a display period in which the display is controlled and a display blanking period in which the display is paused to display a frame image, and at least two types of display periods with different lengths are used when a frame image is displayed.

Display device using at least two types of display periods with different lengths

Touch drive device, touch detection device and display device having touch detection function

According to one embodiment, a power reception section connects to the battery side, and receives supply of power, a detection section detects a singular state where a voltage of the battery side has fallen to a value less than or equal to a predetermined voltage value, a shifting section receives a detection output of the singular state from the detection section to thereby shift to singular control, and a driver connection section connects the plurality of drivers to each other. If the detection section in one of the liquid crystal display drivers has detected the singular state, the shifting section executes the singular control, and the driver connection section notifies the other liquid crystal display drivers that the singular state has been detected.

Growing community of inventors

Tokyo, Japan

Jin Ota