Control method for display device and display device

A control method for a display device including a first liquid crystal panel, a second liquid crystal panel, and a third liquid crystal panel, being configured to display an image, based on emission light from the first liquid crystal panel, emission light from the second liquid crystal panel, and emission light from the third liquid crystal panel, and being provided with a correction look-up table that stores correction data corresponding to a difference between gray scale levels of two display pixels adjacent to each other in the image, the control method comprising:

• acquiring correction data from the correction look-up table, based on pixel data indicating a gray scale level of each color of a first display pixel in the image and pixel data indicating a gray scale level of a second display pixel adjacent to the first display pixel;
• reducing a gray scale level of pixel data, based on the correction data, the pixel data being supplied to panel pixels other than a reference panel pixel among a first panel pixel, a second panel pixel, and a third panel pixel, the reference panel pixel being a panel pixel having the lowest transmittance among the first panel pixel of the first liquid crystal panel that corresponds to the first display pixel, the second panel pixel of the second liquid crystal panel that corresponds to the first display pixel, and the third panel pixel of the third liquid crystal panel that corresponds to the first display pixel;
• and
• supplying pixel data in which gray scale levels of two colors are corrected based on the correction data, for each color to the first liquid crystal panel, the second liquid crystal panel, and the third liquid crystal panel.

A display device, comprising:

• a first liquid crystal panel;
• a second liquid crystal panel;
• a third liquid crystal panel;
• a storage device configured to store a correction look-up table that stores correction data corresponding to a difference between gray scale levels of two display pixels adjacent to each other in an image displayed based on emission light from the first liquid crystal panel, emission light from the second liquid crystal panel, and emission light from the third liquid crystal panel;
• and
• a control device, wherein
• the control device executes processing of:
• acquiring correction data from the correction look-up table, based on pixel data indicating a gray scale level of each color of a first display pixel in the image and pixel data indicating a gray scale level of a second display pixel adjacent to the first display pixel;
• reducing a gray scale level of pixel data, based on the correction data, the pixel data being supplied to panel pixels other than a reference panel pixel among a first panel pixel, a second panel pixel, and a third panel pixel, the reference panel pixel being a panel pixel having the lowest transmittance among the first panel pixel of the first liquid crystal panel that corresponds to the first display pixel, the second panel pixel of the second liquid crystal panel that corresponds to the first display pixel, and the third panel pixel of the third liquid crystal panel that corresponds to the first display pixel;
• and
• supplying pixel data in which gray scale levels of two colors are corrected based on the correction data, for each color to the first liquid crystal panel, the second liquid crystal panel, and the third liquid crystal panel.