Patent ID: 9170360
Filing Date: 2015-10-27
Classification: G02B

Abstract:
1. A display device comprising a display panel including a TFT substrate and a counter substrate with a backlight provided in a back of the display panel, wherein the backlight is a side-light type including a light guide plate and a light source which is mounted on a side of the light guide plate, wherein the light source is an LED set in which a first color LED is located in the center, a second color LED is located on one side of the first color LED, and a third color LED is located on the other side of the first color LED, wherein a concave portion is formed to place the LED set in the light guide plate, wherein incident slits with symmetrical shapes are formed in the concave portion of the light guide plate at a position facing the first color LED, wherein saw tooth slits with asymmetrical shapes are formed in the concave portion of the light guide plate at a position facing the second color LED and the third color LED, wherein the incident slits formed facing the first color LED have arc shaped convex portions, wherein the saw tooth slits facing the second color LED and the third color LED have triangular concave portions, and wherein each of the triangular concave portions is a triangle in which an outer side is short and an inner side is long.