DISPLAY DEVICE

A display device having a horizontal viewing direction is provided in the present disclosure. The display device includes a display panel and a light controller. The display panel includes a plurality of first signal lines, respectively extending along a first direction parallel to the horizontal viewing direction. The light controller is disposed adjacent to the display panel, and the light controller includes a plurality of light blocking patterns, respectively extending along a second direction. The second direction has an angle with respect to the first direction, and an absolute value of the angle is greater than 0 degree and less than or equal to 45 degrees.