Abstract: The video display system includes: a display device configured to display a video; and a server installed external to the display device. The SoC in the display device transmits, to the server, desirable image quality information inputted by the user for each type of video. The server stores the transmitted image quality information for each type of video for each user. The SoC obtains information related to a type of a video to be displayed and transmits, to the server, the obtained information related to the type of the video to be displayed. The SoC also obtains, from the server, image quality information in accordance with the type of the video to be displayed and adjusts image quality of the video to be displayed based on the obtained image quality information.

Abstract: A signal processing device (201) includes noise reduction units (101), cascade-connected to each other, each of which includes: a signal selection section (31) for selecting a representative value from sampled signals obtained from an input signal by sampling a target signal and signals which are away from the target signal by given intervals; a voltage determination section (51) for determining which of a determined representative value and a voltage of the target signal is larger; and a signal output section (61) for increasing or decreasing the voltage of the target signal depending on a result of the determining and outputs the target signal as the output signal. A combination of intervals between the target signal and the signals excluding the target signal vary from noise reduction unit (101) to noise reduction unit (101). A noise reduction unit on a more upstream side has a larger maximum value of the intervals.

Abstract: An image processing system for processing a target pixel to be processed, which target pixel corresponds to inputted image data, a plurality of pixels including the target pixel being arranged in a matrix manner, includes an NR circuit (106). The NR circuit (106) includes a signal processing process circuit (114) for carrying out subtraction or addition, with respect to a pixel value Aij of the target pixel, of a value equivalent to a noise quantity Er calculated in advance, in a case where the pixel value Aij of the target pixel is larger or smaller, respectively, than a first couple of estimated values Bij and Cij for the pixel value Aij of the target pixel, the first couple of estimated values Bij and Cij being estimated from pixel values of respective pixels adjacent to the target pixel, centered at the target pixel, in a temporal axis or in a spatial axis.

Abstract: A liquid crystal display device (101) of the present invention includes an NR circuit (106) for carrying out a signal processing process in which a predetermined noise amount is added to or subtracted from data of a target pixel in accordance with a result of a comparison of signal levels between the target pixel and at least two surrounding pixels which are beside the target pixel, the NR circuit (106) adding or subtracting the predetermined noise amount to or from data of respective pixels adjacent to each other temporally or positionally in respective different signal processing processes. This allows providing a liquid crystal display device having a noise reduction effect. It is thus possible to provide a liquid crystal display device enabling less blur of an image after a noise reduction process.

Abstract: An image processing device includes a signal supplementing unit that generates a harmonic signal of a signal of a predetermined frequency band in an image signal, and supplements the image signal with the generated harmonic signal.

Abstract: During first period, TFTs: and are set in ON and OFF states, respectively. Potential Va is fed into a source line Sj so that potential of pixel electrode is Va. During second period, the TFTs: and are set in the OFF and ON states, respectively. The potential Va is continuously fed into the source line Sj. This sets potential of node to Va, thereby changing the potential of the pixel electrode. During third period, the TFTs: and are set in the OFF state. This realizes a display device where high cost factors and power consumption increase are suppressed, and the effective value of voltage expressed by difference between potential applied to a driving potential input terminal and reference potential can have variance larger than amplitude of signal voltage fed into a data signal line, the variance corresponding to variation in the signal voltage.

Abstract: An image processing system for processing a target pixel to be processed, which target pixel corresponds to inputted image data, a plurality of pixels including the target pixel being arranged in a matrix manner, includes an NR circuit (106). The NR circuit (106) includes a signal processing process circuit (114) for carrying out subtraction or addition, with respect to a pixel value Aij of the target pixel, of a value equivalent to a noise quantity Er calculated in advance, in a case where the pixel value Aij of the target pixel is larger or smaller, respectively, than a first couple of estimated values Bij and Cij for the pixel value Aij of the target pixel, the first couple of estimated values Bij and Cij being estimated from pixel values of respective pixels adjacent to the target pixel, centered at the target pixel, in a temporal axis or in a spatial axis.

Abstract: A signal processing device (201) includes noise reduction units (101), cascade-connected to each other, each of which includes: a signal selection section (31) for selecting a representative value from sampled signals obtained from an input signal by sampling a target signal and signals which are away from the target signal by given intervals; a voltage determination section (51), for determining which of a determined representative value and a voltage of the target signal is larger; and a signal output section (61) for increasing or decreasing the voltage of the target signal depending on a result of the determining and outputs the target signal as the output signal. A combination of intervals between the target signal and a the signals excluding the target signal vary from noise reduction unit (101) to noise reduction unit (101). A noise reduction unit on a more upstream side has a larger maximum value of the intervals.

Abstract: A liquid crystal display device (101) of the present invention includes an NR circuit (106) for carrying out a signal processing process in which a predetermined noise amount is added to or subtracted from data of a target pixel in accordance with a result of a comparison of signal levels between the target pixel and at least two surrounding pixels which are beside the target pixel, the NR circuit (106) adding or subtracting the predetermined noise amount to or from data of respective pixels adjacent to each other temporally or positionally in respective different signal processing processes. This allows providing a liquid crystal display device having a noise reduction effect. It is thus possible to provide a liquid crystal display device enabling less blur of an image after a noise reduction process.

Abstract: A display device according to the present invention includes: a gate driver for sequentially display scanning pixels in a first direction of a TFT liquid crystal panel to set pixels to display states according to information displayed by the pixels in the TFT liquid crystal panel, the pixels arranged in two dimensions and their display state being individually controllable through illumination; and a backlight unit for illuminating the individual pixels with intensity of light which increases and decreases in synchronism with the display scanning of the gate driver after the display scanning. The arrangement enables the backlight flashing period to be determined independently from a TFT panel scanning period or response time of liquid crystal. The arrangement also ensures an extended operating time of a TFT panel; effects a display period equal to, or longer than, the black blanking type; and achieves higher contrast than the black blanking type.

Abstract: A pixel circuit includes a first sub-dot unit including a thin film transistor and a liquid crystal element, and a second sub-dot unit including thin film transistors and liquid crystal elements. During a selection period, some thin film transistors are turned to an ON state, and in a subsequent voltage adjustment period, another transistor is turned to the ON state. The second sub-dot unit is configured such that when shifting to the voltage adjustment period, a voltage applied to the liquid crystal element changes according to changes in states of the thin film transistors, excluding a case in which a maximum gradation voltage has been applied to the source line during the selection period. With this, for a display device pixels including a plurality of sub-dots, it is possible to set the transmittances of all of the plurality of sub-dots to a level corresponding to the maximum gradation voltage.

Abstract: Disclosed is a display device provided with a display panel (3) that displays an image, a control panel (2) that controls directivity of light, and a visual angle detector that detects a visual angle formed by a surface of the display panel and a visual line of a viewer. The control panel controls the directivity of the light on the basis of the visual angle detected by the visual angle detector. It is possible to switch between a wide directivity and a narrow directivity, and further it is possible to change the range of the narrow directivity. By collecting light in a direction in which the viewer is present, light utilization efficiency can be improved. Further, by suppressing the amount of luminescence of a light source, a lower power consumption can be achieved.

Abstract: A display device in accordance with the present invention includes: a gate driver for carrying out display scanning on pixels sequentially in a first direction of a TFT liquid crystal panel so as to set pixels to display states thereof according to information to be displayed by the pixels in the TFT liquid crystal panel, the pixels being arranged in two dimensions and being individually controllable in terms of the display state through illumination; and a backlight unit for illuminating the individual pixels with intensity of light which increases and subsequently decreases in synchronism with the display scanning carried out by the gate driver, but only after the display scanning.

Abstract: There is provided a display device in which even if the amplitude of the voltage of a source wiring line is relatively small, the amplitudes of the voltages of subpixels can be increased and the voltage difference between the subpixels can be furthermore increased. In at least one example embodiment, voltages of equal magnitudes are provided to pixel electrodes in a first subpixel portion and a second subpixel portion from a source wiring line. Thereafter, by changing an applied voltage to an auxiliary capacitance wiring line, voltages of different magnitudes are provided to the pixel electrodes in the first subpixel portion and the second subpixel portion. By this, a voltage difference is generated between the pixel electrode in the first subpixel portion and the pixel electrode in the second subpixel portion.

Abstract: One embodiment of the present invention discloses a display device which can use a display element having a relatively large difference between a minimum gradation voltage and a maximum gradation voltage. A first selection period and a second selection period are included in a period (a scanning signal line selection period) in which each gate wiring is selected. In the first selection period, a first selection voltage for allowing every TFT included in a line, which is an object to be selected, to be in an ON state is applied to the gate wiring of the line which is the object to be selected. In a period between the first selection period and the second selection period, a non selection voltage is applied to the gate wiring which is the object to be selected and the voltage of an auxiliary capacity wiring corresponding to the gate wiring which is the object to be selected is changed.

Abstract: A backlight unit includes a plurality of light sources whose light-emitting colors can be controlled independently. Each light source is associated with any one of a plurality of areas which are obtained by dividing a display screen. A color signal processing unit determines a chromaticity distribution of a video signal in an area, determines, in color space, a region containing all color coordinates in the area, and determines a light-emitting color of a corresponding light source for each field based on the determined region, and determines a transmittance of a liquid crystal element for each field based on the video signal in the area and the determined light-emitting color. By this, the difference between a color to be displayed and a color actually displayed is reduced area by area, reducing color breakup occurring in a field sequential color system.

Abstract: In one embodiment, a display device of the present invention includes capacitors provided between a gate and a source of a driver TFT. During a select period, a voltage is fed to the gate terminal of the driver TFT, and a voltage is fed to the source terminal of the driver TFT. Thereafter, during a threshold correction period, the gate voltage of the driver TFT is retained to make the source voltage of the driver TFT equal to Vda?Vth (<Vcom). Subsequently, the gate voltage of the driver TFT is changed to control a current flowing between the drain and the source of the driver TFT.

Abstract: Transmittances of red, blue and green filters included in a display device are increased, and in a first field period, after a signal voltage (Vg) is provided to a green sub-pixel (G), a green CCFL is turned on, whereas red and blue CCFLs are turned off. At this time, only light from the green CCFL transmitted through the green sub-pixel (G) is transmitted through a liquid crystal panel. Also, in a second field period, after signal voltages (Vr and Vb) are provided to red and blue sub-pixels (R and B), respectively, the red and blue CCFLs are turned on, and the green CCFL is turned off. At this time, only light from the red and blue CCFLs respectively transmitted through the red and blue sub-pixels (R and B) is transmitted through the liquid crystal panel. Thus, it is possible to provide a display device less susceptible to color purity reduction even if transmittances of color filters are increased.

Abstract: An area light source (5) comprises a plurality of point light sources (12) and a light guide plate (9) having a light emitting surface for emitting light from the point light sources (12) as an are light. The light guide plate (9) includes a plurality of first light guide bars (10) and a plurality of second light guide bars (11), the first light guide bars (10) and the second light guide bars (11) having a plurality of holes (13) provided at constant intervals. The light guide plate (9) is configured such that the first light guide bars (10) and the second light guide bars (11) are combined in a lattice shape and the holes (13) of the first light guide bars (10) and the holes (13) of the second light guide bars (11) are disposed alternately adjacent to each other. The point light sources (12) are disposed at the holes (13).

Abstract: At least one embodiment of the present invention aims to provide a display device capable of compensating for a change of a liquid crystal capacitance value for an electro-optic element such as a liquid crystal in accordance with a change of an application voltage to the electro-optic element, without incorporating frame memory. It also aims to improve the response speed of a display device without frame memory. For each pixel formation portion, a frame period is divided into first and second periods.