Liquid crystal television adjustment system, liquid crystal display unit adjustment system, and liquid crystal display unit

A liquid crystal display unit adjustment system comprising:

• a liquid crystal display unit for generating picture data expressed in terms of first to third color components, and expressed in terms of digital gradation value for each of a multitude of pixels making up a screen on the basis of a picture signal inputted while storing an adjustment value for adjusting white balance of the picture data in a nonvolatile semiconductor memory, and executing white balance adjustment of the picture data by referring to the adjustment value before displaying a picture on a predetermined screen;
• and
• an adjustment unit for setting the adjustment value for adjusting the white balance into the liquid crystal display unit,
• wherein the liquid crystal display unit includes an adjustment value setting unit for setting the adjustment value for adjusting white balance by setting an output ratio among the first to third color components of the picture data, a contrast adjustment unit for causing contrast to be lowered by a predetermined amount by controlling the adjustment unit, and an adjustment value storing unit for causing the adjustment value as set by the adjustment unit to be stored in the semiconductor memory, and
• the adjustment unit is equipped with a white picture signal outputting unit for outputting a picture signal for a white color to the liquid crystal display unit, a chromaticity information acquiring unit for measuring the respective luminance values of the first to third color components from the picture displayed on the screen of the liquid crystal display unit on the basis of the picture signal as outputted, thereby generating the chromaticity information, a chromaticity saturation determination unit for altering the respective outputs of the first to third color components of the picture displayed on the screen by a predetermined amount, thereby determining whether or not the chromaticity information undergoes a change, a contrast adjustment directing unit for lowering the contrast on the screen by the predetermined amount by controlling the liquid crystal display unit when the chromaticity saturation determination unit determines that the chromaticity information has not undergone a change, a chromaticity determination unit for determining whether or not the chromaticity information substantially matches chromaticity information on a white color when the chromaticity saturation determination unit determines that the chromaticity information has changed, and an adjustment value setting unit for setting a predetermined adjustment value into the liquid crystal display unit.

A liquid crystal display unit for generating picture data expressed in terms of first to third color components, and expressed in terms of digital gradation value for each of a multitude of pixels making up a screen on the basis of a picture signal inputted while storing an adjustment value for adjusting white balance of the picture data in a nonvolatile semiconductor memory, and executing white balance adjustment of the picture data by referring to the adjustment value before displaying a picture on a predetermined screen, said liquid crystal display unit comprising:

• an adjustment value setting unit for setting the adjustment value for adjusting white balance by setting a output ratio among the first to third color components of the picture signal inputted;
• a white picture signal outputting unit for outputting a picture signal for a white color to the screen;
• a chromaticity information acquiring unit for measuring respective luminance values of the first to third color components of the picture displayed on the screen of the liquid crystal display unit on the basis of the picture signal as outputted, thereby acquiring chromaticity information;
• a chromaticity saturation determination unit for altering respective outputs of the first to third color components of the picture displayed on the screen by a predetermined amount, thereby determining whether or not the chromaticity information undergoes a change;
• a contrast adjustment directing unit for lowering the contrast on the screen by a predetermined amount by controlling the liquid crystal display unit when the chromaticity saturation determination unit determines that the chromaticity information has not undergone a change;
• a chromaticity determination unit for determining whether or not the chromaticity information substantially matches chromaticity information on a white color when the chromaticity saturation determination unit determines that the chromaticity information has changed;
• and
• an adjustment value storing unit for storing the adjustment value in the nonvolatile semiconductor memory.