US Patent 11182006 Illuminated touch panel and backlight assembly thereof

An illuminated touch panel includes a backlight assembly and a cover plate. The backlight assembly includes a light guide plate, and an outer stop. The light guide plate includes a plurality of bar portions and a connecting portion. The plurality of bar portions are separated from each other and arranged side by side. Each of the bar portions includes a pattern dot region, a connecting end and a light entrance end. There is a narrow slot between any two adjacent bar portions. The long axis direction of each of the extending dot regions of the connecting portion is substantially parallel to the length direction of each of the narrow slots. The plurality of light blocking bars of the outer stop are arranged side by side and fitted with the plurality of narrow slots. The cover plate includes a plurality of window regions corresponding to the plurality of pattern dot regions.