Electronic device and method of measuring blur information thereof

An electronic device comprising:

• a display module comprising a display area, through which an image is displayed, and a peripheral area defined adjacent to the display area;
• an optical sensing module disposed under the display module, wherein the optical sensing module receives an optical signal via the display module;
• a protective film disposed on the display module;
• and
• a control module comprising a blur-measuring unit which compares a first image obtained using the optical sensing module before the protective film is attached to the display module with a second image obtained using the optical sensing module after the protective film is attached to the display module to calculate blur information included in the second image, wherein
• the display area comprises a first area and a second area having a light transmittance lower than a light transmittance of the first area,
• the display module further comprises a sensing peripheral area defined adjacent to the first area, and
• the display module comprises a light blocking pattern disposed in the peripheral area and the sensing peripheral area.

A method of measuring blur information of an electronic device, the method comprising:

• placing a display module comprising a display area through which an image is displayed and a peripheral area defined adjacent to the display area;
• obtaining a first image with respect to a measurement area of the display module using an optical sensing module disposed under the display module;
• placing a protective film on the display module;
• obtaining a second image with respect to the measurement area using the optical sensing module in a state where the protective film is attached to the display module;
• and
• comparing the second image with the first image to calculate the blur information included in the second image,
• further comprising:
• placing a light blocking mark on the display module before the obtaining the first image and the placing the protective film on the display module;
• placing a first diffuse reflective film on the display module before the obtaining the first image;
• and
• placing a second diffuse reflective film on the protective film before the obtaining the second image,
• wherein the light blocking mark is disposed to overlap the display area when viewed in a plan view,
• wherein the first image is obtained using an optical signal reflected by the first diffuse reflective film, and the second image is obtained using an optical signal reflected by the second diffuse reflective film.

A method of measuring blur information of an electronic device, the method comprising:

• placing a display module comprising a display area through which an image is displayed and a peripheral area defined adjacent to the display area;
• obtaining a first image with respect to a measurement area of the display module using an optical sensing module disposed under the display module;
• placing a protective film on the display module;
• obtaining a second image with respect to the measurement area using the optical sensing module in a state where the protective film is attached to the display module;
• and
• comparing the second image with the first image to calculate the blur information included in the second image, wherein
• the display area comprises a first area and a second area having a light transmittance lower than a light transmittance of the first area,
• the display module further comprises a sensing peripheral area defined adjacent to the first area,
• the display module comprises a light blocking pattern disposed in the peripheral area and the sensing peripheral area,
• the optical sensing module comprises a plurality of optical sensors,
• a first portion of the optical sensors overlaps the light blocking pattern when viewed in a plan view, and
• a second portion of the optical sensors overlaps the display area when viewed in the plan view.