Abstract: An image processing device that generates a second output image signal output to a second liquid crystal panel that is disposed to be superposed on a first liquid crystal panel, includes: a first corrector that generates a gamma correction signal in which a gradation value of an input image signal is corrected; a detector that receives the gamma correction signal and detects an image region brighter than surroundings as a first high-frequency portion from the gamma correction signal; and a second corrector that receives the gamma correction signal and a detection result of the detector and performs correction to decrease the gradation value of the first high-frequency portion in the gamma correction signal. The second output image signal is generated based on the gamma correction signal corrected by the second corrector.

Abstract: A liquid crystal display device includes: first and second liquid crystal panels disposed to be overlapped with each other; a parallax reduction unit that generates the second output image signal by performing smoothing processing on a first signal based on the input image signal; a first temporal filter that generates a first response correction signal determining the first output image signal based on the second output image signal; and a corrector that generates the first output image signal based on at least the first response correction signal and a second signal based on the input image signal. The first temporal filter generates the first response correction signal of a current frame based on the second output image signal of the current frame and the first response correction signal of a previous frame.

Abstract: A liquid crystal (LC) display device includes a first display panel, a second display panel, and an image processor. The image processor generates first image data and second image data that correspond to a first image and a second image for display on the first display panel and the second display panel, respectively. The image processor includes a first image data decision unit that decides the first image data, a filter that decides a correction factor, and a second image data decision unit that decides the second image data based on smoothed image data and the correction factor. A method for displaying an image in a LC display device with a first display panel and a second display panel includes determining first image data based on smoothed input image data, and determining second image data based on the smoothed input image data and a correction factor.

Abstract: A liquid crystal (LC) display device includes a first display panel, a second display panel, and an image processor. The image processor generates first image data and second image data that correspond to a first image and a second image for display on the first display panel and the second display panel, respectively. The image processor includes a first image data decision unit that decides the first image data, a filter that decides a correction factor, and a second image data decision unit that decides the second image data based on smoothed image data and the correction factor. A method for displaying an image in a LC display device with a first display panel and a second display panel includes determining first image data based on smoothed input image data, and determining second image data based on the smoothed input image data and a correction factor.

Abstract: A liquid crystal display device includes: first and second liquid crystal panels disposed to be overlapped with each other; a parallax reduction unit that generates the second output image signal by performing smoothing processing on a first signal based on the input image signal; a first temporal filter that generates a first response correction signal determining the first output image signal based on the second output image signal; and a corrector that generates the first output image signal based on at least the first response correction signal and a second signal based on the input image signal. The first temporal filter generates the first response correction signal of a current frame based on the second output image signal of the current frame and the first response correction signal of a previous frame.

Abstract: An image processing device that generates a second output image signal output to a second liquid crystal panel that is disposed to be superposed on a first liquid crystal panel, includes: a first corrector that generates a gamma correction signal in which a gradation value of an input image signal is corrected; a detector that receives the gamma correction signal and detects an image region brighter than surroundings as a first high-frequency portion from the gamma correction signal; and a second corrector that receives the gamma correction signal and a detection result of the detector and performs correction to decrease the gradation value of the first high-frequency portion in the gamma correction signal. The second output image signal is generated based on the gamma correction signal corrected by the second corrector.

Abstract: When transparency information (T) is externally inputted along with RGB image data (DV1), the RGB image data (DV1) is converted to YUV image data (DV2) in YUV422 formal, and the transparency information (T) is added to information about a color-difference component U or V therein, thereby generating YUV image data (DV3) to be inputted to a signal processing portion (20). The signal processing portion 20 extracts the transparency information (T) and converts the YUV image data (DV2) to RGB image data (DV1). When the RGB image data (DV1) and the transparency information (T) are inputted to an LCD timing controller (30), the LCD timing controller 30 renders a liquid crystal display panel (90) transparent on the basis of the transparency information (T), thereby allowing background light to be transmitted therethrough, or when only the RGB image data (DV1) is inputted, the liquid crystal display panel (90) displays an image.

Abstract: When transparency information (T) is externally inputted along with RGB image data (DV1), the RGB image data (DV1) is converted to YUV image data (DV2) in YUV422 formal, and the transparency information (T) is added to information about a color-difference component U or V therein, thereby generating YUV image data (DV3) to be inputted to a signal processing portion (20). The signal processing portion 20 extracts the transparency information (T) and converts the YUV image data (DV2) to RGB image data (DV1). When the RGB image data (DV1) and the transparency information (T) are inputted to an LCD timing controller (30). the LCD timing controller 30 renders a liquid crystal display panel (90) transparent on the basis of the transparency information (T). thereby allowing background light to be transmitted therethrough, or when only the RGB image data (DV1) is inputted, the liquid crystal display panel (90) displays an image.

Abstract: A liquid crystal display (LCD) device includes a first and second LCD panels having a plurality of first and second gate lines. A backlight is on a side of the first LCD panel such that the first LCD panel is adjacent the backlight and between the second LCD panel and the backlight. The backlight includes a plurality of rows of light sources. A driving circuit supplies a drive signal to the light sources. A controller scans the plurality of first and second gate lines. The controller controls the driving circuit to illuminate a first row of the light sources after the scan of a first set of the plurality of first or second gate lines. The controller controls the driving circuit to not illuminate the first row of the light sources until the scan of a second set of the plurality of first or second gate lines is completed.

Abstract: A display device capable of improving luminance of a monochrome image in field sequential driving and a method for driving the same are provided. In a liquid crystal display device (100), in a case that a color image constituted by red, green, and blue colors is displayed in a first frame, in a case that a red LED (85r) emits a light only in a first field in a second frame and none of LEDs (85r, 85g, 85b) is not made to light up in second and third fields, only the red LED (85r) is made to light up in all fields in a subsequent third frame so that a red image is displayed. Therefore, in the third frame, since only the red LED (85r) emits a light in all fields, a luminance of the red image is three times a luminance of the red image in the second frame.

Abstract: An object of the present invention is to realize a liquid crystal display device of a field sequential system which is capable of preventing occurrence of color shift and flicker. One frame period is divided into a plurality of fields, the number of which is greater than the number of lighting patterns. Provided are a liquid crystal state value acquiring unit (131) configured to obtain a liquid crystal state value at an end time of a display field based on an input gradation value in the display field and a liquid crystal state value at an end time of a previous field (one field before the display field) (a gradation value corresponding to an aligned state of liquid crystal molecules), and an application gradation value acquiring unit (133) configured to obtain an application gradation value in the display field by correcting an input gradation value in the display field based on a liquid crystal state value at the end time of the previous field.

Abstract: Conventionally, in a transparent display area, a gradation value of each color component is assigned to transparent gradation. Hence, when video is displayed in a video display area, each color component can only be represented in gradations with a gradation value of 0 to 1022, and it becomes necessary to assign pixel values to the transparent gradation. Accordingly, a color represented by those pixel values cannot be displayed. In view of this, by adding transparent area information to a vertical blanking period of a video signal, the pixel values can also be used to display video. By this, each of the color components can be represented in gradations with a gradation value of 0 to 1023, and thus, video can be displayed in full-range color even when a transparent display area is provided.

Abstract: A display device employing a field sequential system is realized, that can transfer video data for field sequential among a plurality of substrates through a general standard interface. In a display device including a first circuit substrate (10) having a signal processing circuit (100), and a second circuit substrate (20) having liquid crystal timing controllers (200), the signal processing circuit (100) is provided with a signal separation circuit (110) configured to separate an input image signal (DIN) for one frame period into first intermediate data on a field basis, and a rearrangement circuit (120) configured to convert the first intermediate data to second intermediate data having a format depending on a standardized interface, and to rearrange the second intermediate data so that data for a plurality of rows is simulatively put together as data for one row, by which field data is generated.

Abstract: A display device employing a field sequential system is realized, that can transfer video data for field sequential among a plurality of substrates through a general standard interface. In a display device including a first circuit substrate (10) having a signal processing circuit (100), and a second circuit substrate (20) having liquid crystal timing controllers (200), the signal processing circuit (100) is provided with a signal separation circuit (110) configured to separate an input image signal (DIN) for one frame period into first intermediate data on a field basis, and a rearrangement circuit (120) configured to convert the first intermediate data to second intermediate data having a format depending on a standardized interface, and to rearrange the second intermediate data so that data for a plurality of rows is simulatively put together as data for one row, by which field data is generated.

Abstract: An object of the present invention is to realize a liquid crystal display device of a field sequential system which is capable of preventing occurrence of color shift and flicker. One frame period is divided into a plurality of fields, the number of which is greater than the number of lighting patterns. Provided are a liquid crystal state value acquiring unit (131) configured to obtain a liquid crystal state value at an end time of a display field based on an input gradation value in the display field and a liquid crystal state value at an end time of a previous field (one field before the display field) (a gradation value corresponding to an aligned state of liquid crystal molecules), and an application gradation value acquiring unit (133) configured to obtain an application gradation value in the display field by correcting an input gradation value in the display field based on a liquid crystal state value at the end time of the previous field.

Abstract: Conventionally, in a transparent display area, a gradation value of each color component is assigned to transparent gradation. Hence, when video is displayed in a video display area, each color component can only be represented in gradations with a gradation value of 0 to 1022, and it becomes necessary to assign pixel values to the transparent gradation. Accordingly, a color represented by those pixel values cannot be displayed. In view of this, by adding transparent area information to a vertical blanking period of a video signal, the pixel values can also be used to display video. By this, each of the color components can be represented in gradations with a gradation value of 0 to 1023, and thus, video can be displayed in full-range color even when a transparent display area is provided.

Abstract: In order to suppress an increase in number of transmission signal lines such as cables and the like while using an interface based on an existing standard, in a liquid crystal display device (10) that adopts a field sequential method, a signal processing circuit (15) rearranges gradation data to data arrangement suitable for the field sequential drive, and transmits drive video signal data indicating a red gradation value through transmission paths for G data and B data in a first HDMI cable (HC1). In this manner, since in the HDMI cable that can transmit RGB in parallel, three pieces of display gradation data of the same color (equivalent to three pixels) are transmitted in parallel, a number of the HDMI cables for the transmission is one.