Patent ID: 11960667
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Computer technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 0:
1. A display device, comprising:
a display unit comprising a plurality of emission areas;
a plurality of touch electrodes that sense a touch;
a plurality of code patterns formed in a preset code shape on partial areas of front surfaces of the plurality of touch electrodes;
a plurality of tilt sensing patterns, including first to fourth tilt sensing patterns, comprising a light absorbent disposed in an inner area or a peripheral area of each of the plurality of code patterns; and
a main processor that
receives detected image data corresponding to the plurality of tilt sensing patterns from a position input device, and determines arrangement direction information and tilt information of the position input device by comparing the detected image data with each other,
distinguishes a detected image of each of the first to fourth sensing patterns from the detected image data and calculates light amount detected areas sensed differently according to amounts of reflected light from the detected image of each of the first to fourth sensing patterns, and
sets the detected images and the light amount detected areas of the first to fourth sensing patterns detected at a preset reference distance of a front surface of a display panel as reference detected images and reference detected areas.