Sharp Kabushiki Kaisha Corporation

Hiroto Suzuki

Masae Kawabata

Fumikazu Shimoshikiryoh

Kentaro Irie

Toshihide Tsubata

Takashi Sasaki

Fumikazu Shimoshikiryo

Toshikazu Tsuchiya

Kohji Nagasaka

Satoru Sagawa

Kazumasa Hata

Ryohhei Matsumoto

Kentarou Irie

A display device includes: a display that displays an image based on image data; a backlight device that irradiates the display with light; an image determiner that determines, based on the image data, whether the image includes a target image having a contrast higher than a reference contrast; and a luminance value setter that sets each luminance value of the image based on the image data, wherein when the image determiner determines that the image includes the target image, the luminance value setter changes the luminance value set for at least one of two or more areas in the target image to reduce a difference between the luminance values of the two or more areas in the target image set based on the image data.

Display device and method for controlling display device

In a display device in which source lines on a display panel are driven from both ends, when a connection confirmation signal (S) output from a source board () indicates abnormality, a power supply circuit () on a control board () stops outputting a power supply voltage (Va) used when source drivers drive the source lines. The control board () outputs a high-level connection confirmation signal (S) to the source board (), the source board () outputs the connection confirmation signal (S) to the control board () as the connection confirmation signal (S), and the control board () pulls down the connection confirmation signal (S) to a low level. With this, it is possible to prevent serious damage from occurring even when a connection failure or the like occurs.

Display device and power supply control method therefor

In order to enable cables to be easily and correctly connected in a display device requiring a plurality of cables to be connected to source device, even if cables having the same appearance are used, the display device () is provided with one display panel () and a plurality of input terminals, and is able to be connected via a plurality of cables to source device (), which outputs a video signal for a video to be displayed on the display panel (). The display device () includes an on-screen display (OSD) processing portion. When a plurality of video signals, which show a test image having different colors in split display areas formed by splitting a display area of the display panel () so as to have the same number as the number of cables, are received from the source device () via the plurality of cables, an OSD image that prompts a user to switch the cables is displayed on the display panel () according to the received test image.

Display device

When each of R, G, and B pixels continuously display identical gray scales (1023 gray scale) in a liquid crystal display device in which the thicknesses of the liquid crystal layers are of R pixel&#x3e;G pixel&#x3e;B pixel, the R pixel is alternately supplied with a positive signal potential (SHR) and a negative signal potential (SLR), the G pixel is alternately supplied with a positive signal potential (SHG) and a negative signal potential (SLG), and the B pixel is alternately supplied with a positive signal potential (SHB) and a negative signal potential (SLB). A first middle value (SMR) that between SHRand SLRis set higher than a second middle value (SMG) that is between SHGand SLG, and second middle value (SMG) is set higher than a third middle value (SMB) that is between SHBand SLB

Liquid crystal display device

In at least one embodiment, a display device includes: a correction section for carrying out gray scale correction on gray scale data to be supplied to a display driver, by use of a correction amount corresponding to a position of each column to which the data signal is to be supplied, the each column being on a display panel, the correction section carrying out the gray scale correction by setting the correction amount to zero for at least (i) gray scale data corresponding to a lowest positive-polarity data signal potential and (ii) gray scale data corresponding to a lowest negative-polarity data signal potential of first gray scale data to be supplied to at least one column constituting a part of all columns, the gray scale data (i) and (ii) being among the gray scale data inputted into the correction section.

Display device and method for driving same

A display device of at least one embodiment of the present invention includes at least one correcting device for, in a case where a first data signal is to be written to a first pixel during a unique horizontal period, (i) carrying out a first gray scale correction with respect to display data corresponding to the first data signal to be written to the first pixel during the unique horizontal period, and (ii) supplying the display data to a display driver, the unique horizontal period being a first horizontal period for one of the driving signals supplied to respective storage capacitor bus lines which first horizontal period occurs a first number of horizontal periods after an initial horizontal period included in a given cyclic term for either or both of a binary level, the given cyclic term being a second cyclic term for the driving signals which second cyclic term occurs a second number of cyclic terms after a first cyclic term including a horizontal period during which the data signals start to be written to the pixels, the first number being different from a corresponding number for any other of the driving signals.

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Osaka, Japan

Hiroto Suzuki