Sharp Kabushiki Kaisha Corporation

Other

Taketoshi Nakano

Toshihiro Yanagi

Asahi Yamato

Akizumi Fujioka

Ken Inada

Kazuki Takahashi

Takafumi Kawaguchi

Kohzoh Takahashi

Fumiyuki Kobayashi

Kohji Saitoh

Yoshinori Shibata

Keishi Nishikubo

Hiroyuki Furukawa

Noriyuki Tanaka

Hidekazu Miyata

Kouji Kumada

Yasuhiro Yoshida

Kiyoshi Nakagawa

Kazuyoshi Yoshiyama

Jun Nakata

Ryoh Araki

Shinji Nakagawa

Tsuyoshi Kawaguchi

Satoshi Ihida

Shinya Tanaka

Masami Ozaki

Hiroaki Sugiyama

Hiroaki Shigeta

Akira Nomura

Kouji Saitou

A high-level power source line of a display device has a resistance value per unit length that is greater from a second end portion side toward a first end portion side in at least a portion of a section ranging from the first end portion connected to a first power source bus line to the second end portion in a side opposite to the first end portion. Accordingly, variation in luminance of each pixel is suppressed.

Display device

Provided is a flexible display device in which an average thickness of a layered body, a touch panel, and a polarizing plate in a bending region is thinner than an average thickness of the layered body, the touch panel, and the polarizing plate in a region other than the bending region.

Flexible display device

An object of the disclosure is to achieve a stable display quality without an effect of variation in temperature in a display device including a display element driven by an electric current. The display device is provided with a thermistor as a temperature detector detecting an ambient temperature. A scanning signal amplitude controller changes the voltage level of a gate low voltage in accordance with temperature indicated by temperature data acquired by the thermistor. An in-panel driver controller gives, to a gate driver, a gate clock signal of which the voltage level on a high level side is set at the voltage level of a gate high voltage and the voltage level on a low level side is set at the voltage level of the gate low voltage. The gate driver outputs a scanning signal on the basis of the gate clock signal.

Display device including pixel circuits including display elements driven by electric current

A display device with a first edge and a second edge, the first edge and the second edge extending in a same direction, the display device including a light-emitting layer, and an electronic circuit board, wherein the display device emits light toward a front side with the display device is bent as a first terminal portion disposed on a surface of an end portion on the first edge and a second terminal portion disposed on a back face of an end portion on the second edge facing one another, and the electronic circuit board includes a first surface mounted to the first terminal portion and a second surface opposite the first surface and mounted to the second terminal portion.

Display device, manufacturing method for display device, manufacturing apparatus of display device, mounting device, and controller

A display device () in accordance with an embodiment of the present invention includes: an LCD driving section () and an LCD controller () for causing an image based on an image signal to be displayed on an LCD (); and a CPU () for supplying an image signal to the LCD controller (), the LCD controller () being configured to supply, to the CPU (), a control signal that instructs the CPU () to supply an image signal, and the CPU () being configured to supply an image signal in a case where the CPU () receives a control signal.

Display device and control method

The occurrence of flicker is effectively suppressed particularly in a liquid crystal display device that performs low-frequency driving. Provided are a gradation-to-voltage value conversion table for converting a gradation to a voltage value, a correction value map for storing a correction value, and a voltage value-to-gradation conversion table for converting a voltage value to a gradation. A gradation of an input image signal is converted to a first voltage value, using the gradation-to-voltage value conversion table. The correction value specified in accordance with a location of a pixel to be processed is added to or subtracted from the first voltage value so that a second voltage value is obtained. The second voltage value is converted to an output gradation, using the voltage value-to-gradation conversion table. A driving video signal is applied to a source bus line, based on the output gradation.

Liquid crystal display device and method for driving same

The present invention provides a liquid crystal display device capable of suppressing a decrease in display quality when pause drive is performed in an alternating-voltage drive mode, as well as a method for driving the same. In a first drive frame, overshoot drive is performed using correction values provided by an LUT to apply overshoot voltages whose absolute values are higher than absolute values of signal voltages to data signal lines. Subsequently, in a second drive frame, normal drive is performed to write signal voltages of the same polarity as the overshoot drive voltages to the data signal lines. Thereafter, a pause period in which an image written by normal drive is displayed continues until the start of a drive period in the next pause drive period. As a result, a decrease in luminance immediately after the signal voltages are written during the second drive frame is suppressed significantly, so that the viewer barely recognizes flicker.

There is provided an image display device, in which a pixel includes sub-pixels of four or more colors that include a color in addition to the three primary colors, and which can display a high-quality image in which false colors or artifacts are suppressed. The image display device includes a pixel area in which a plurality of pixels P are arranged in a matrix shape, and each of the pixels P includes m (m is an integer which is equal to or greater than 4) sub-pixels SP. When it is assumed that the colors of the m sub-pixels SP included in one pixel are C, C, . . . , and Cm, the m sub-pixels SP which are sequentially arrayed from an arbitrary position include all of the colors of C, C, . . . , and Cm in both the vertical direction and the horizontal direction in the pixel area.

Image display device

Grayscale values for previous and current frames are different, and therefore, an overshoot voltage, which has a higher absolute value than a signal voltage, are applied to a data signal line. Next, in a second drive frame, normal drive is performed, so that a signal voltage of the same polarity as the overshoot voltage is written to the data signal line. Moreover, in a first drive frame of a third pause drive period, the grayscale values for the previous and current frames are equal, and also greater than or equal to a boundary value, and therefore, undershoot drive is performed. An undershoot voltage, which has a lower absolute value than a signal voltage, is applied to the data signal line. Next, in a second drive frame, normal drive is performed, so that a signal voltage of the same polarity as the undershoot voltage is written to the data signal line.

An image determination part configured to determine whether or not an image based on an input image signal is an image analogous to a polarity reversal pattern in a reversal driving scheme employed by default and to output a determination result, and a reversal pattern decision part configured to decide a reversal driving scheme based on the determination result are provided as constituent elements anterior to a liquid crystal drive unit. With regard to each unit area where the determination by the image determination part is made, the reversal pattern decision part decides the reversal driving scheme in the unit area, as a reversal driving scheme different from the reversal driving scheme employed by default, when the determination result indicates that the image based on the input image signal is the image analogous to the polarity reversal pattern in the reversal driving scheme employed by default.

Included are: refresh a rate changing section () for changing a refresh rate of a display panel () by configuring settings for scan periods during each of which a plurality of gate signal lines (G) of the display panel () are sequentially scanned and for pause periods during each of which sequential scanning of the plurality of gate signal lines (G) is suspended; and a drive amount control section () for controlling, in accordance with a ratio of the scan periods to the pause periods, drive time during which each of the gate signal lines is driven in each of the scan periods.

Drive device and display device

In a case where a display device () receives an instruction to change a refresh rate of a display panel (), the display device () changes the refresh rate with a timing with which there is a balance between the length of time for which positive source signals are written and the length of time for which negative source signals are written.

Drive device changing refresh rate of display panel and display device including drive device

A timing controller carries out display refresh on a display panel in a first frame which comes one frame after a second frame in which (i) an image signal supplied from an interface matches an image signal stored in a frame memory and (ii) a polarity balance value is equal to a reference value. In this case, the image signal, having a polarity opposite to that of pixel applied voltages in the second frame, is supplied to the display panel in the first frame. This makes it possible to prevent a deterioration in the display panel while reducing electric power consumption.

Display device driving method, display device, and liquid crystal display device

There is provided an image display device, in which a pixel includes sub-pixels of four or more colors that include a color in addition to the three primary colors, and which can display a high-quality image in which false colors or artifacts are suppressed. The image display device includes a pixel area in which a plurality of pixels P are arranged in a matrix shape, and each of the pixels P includes m (m is an integer which is equal to or greater than 4) sub-pixels SP. When it is assumed that the colors of the m sub-pixels SP included in one pixel are C1, C2, . . . , and Cm, the m sub-pixels SP which are sequentially arrayed from an arbitrary position include all of the colors of C1, C2, . . . , and Cm in both the vertical direction and the horizontal direction in the pixel area.

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Osaka, Japan

Taketoshi Nakano