Electronic device and method for manufacturing the same

A window module comprising:

• a window comprising a first area, and a second area around a periphery of the first area, in plan view;
• an optical layer comprising a first layer, a second layer on the first layer, and a third layer on the second layer;
• and
• an adhesion layer between the window and the optical layer and attaching the window and the optical layer,
• wherein a groove comprises a first part passing through the third layer and a second part passing through the first layer and the second layer, the second part exposing at least a portion of the adhesion layer, and
• wherein the first part comprises at least one stepped part.

A method, comprising:

• providing a display panel;
• providing a window comprising a first area, and a second area around a periphery of the first area, on a plane;
• forming a preliminary window module by sequentially laminating an adhesion layer and an optical layer on the window;
• forming a window module by cutting the preliminary window module;
• and
• combining the display panel and the window module,
• wherein the forming of the window module by cutting the preliminary window module comprises:
• a first irradiation operation of irradiating a first laser beam along a first irradiation line defined in the second area;
• a second irradiation operation of irradiating a second laser beam along a second irradiation line spaced apart from the first irradiation line;
• and
• a third irradiation operation of irradiating a third laser beam along a third irradiation line defined between the first irradiation line and the second irradiation line,
• wherein the second irradiation line is further apart from the first area than the first irradiation line, and
• wherein the method is a method for manufacturing an electronic device.