US-20260130100-A1 - ELECTRONIC DEVICE AND METHOD OF MANUFACTURING THE SAME

US20260130100A1US 20260130100 A1US20260130100 A1US 20260130100A1US-20260130100-A1

Abstract

A method of manufacturing an electronic device includes providing a preliminary display device including a display panel and a polarizing plate stacked on the display panel, in which the preliminary display device includes an opening processing area defined by an opening processing line. The method further includes forming an opening line by irradiating the opening processing line with a laser beam. Irradiating the opening processing line with the laser beam begins at an intersection point on the opening processing line. The intersection point is spaced apart, in a laser movement direction, from a crack point at which a virtual vertical line perpendicular to a stretching axis of the polarizing plate and passing through a center of the opening processing area intersects the opening processing line.

Inventors

Geun Woo YUG

Assignees

SAMSUNG DISPLAY CO., LTD.

Dates

Publication Date: 20260507
Application Date: 20250731
Priority Date: 20241101

Claims (20)

1 . A method of manufacturing an electronic device, comprising: providing a preliminary display device including a display panel and a polarizing plate stacked on the display panel, wherein the preliminary display device comprises an opening processing area defined by an opening processing line; and forming an opening line by irradiating the opening processing line with a laser beam, wherein irradiating the opening processing line with the laser beam begins at an intersection point on the opening processing line, wherein the intersection point is spaced apart, in a laser movement direction, from a crack point at which a virtual vertical line perpendicular to a stretching axis of the polarizing plate and passing through a center of the opening processing area intersects the opening processing line.
2 . The method of claim 1 , wherein forming the opening line comprises: irradiating a first region between a starting point, located adjacent to the intersection point in the opening processing area, and the intersection point with the laser beam to form a cutting start line; irradiating the opening processing line with the laser beam from the intersection point along the opening processing line to form an opening formation line; and irradiating a second region between the intersection point and an end point, located adjacent to the intersection point in the opening processing area, with the laser beam, after the opening formation line reaches the intersection point, to form a cutting end line.
3 . The method of claim 2 , wherein an angle formed by the intersection point, the center of the opening processing area, and the crack point exceeds about 0° and is less than about 45°.
4 . The method of claim 2 , wherein the crack point includes a first crack point and a second crack point which face each other with the center of the opening processing area interposed therebetween, the intersection point includes a first intersection point and a second intersection point which are adjacent to the first crack point and the second crack point, respectively, the starting point includes a first starting point and a second starting point which are adjacent to the first intersection point and the second intersection point, respectively, and the end point includes a first end point and a second end point which are adjacent to the first intersection point and the second intersection point, respectively.
5 . The method of claim 4 , wherein the first intersection point and the second intersection point are symmetrical with respect to the center of the opening processing area.
6 . The method of claim 4 , wherein the opening processing area is divided into a first quadrant, a second quadrant, a third quadrant, and a fourth quadrant from the first crack point along the laser movement direction, and the first intersection point is located on a portion of the opening processing line in the first quadrant, and the second intersection point is located on a portion of the opening processing line in the third quadrant.
7 . The method of claim 6 , wherein the first starting point and the first end point are located in the first quadrant, and the second starting point and the second end point are located in the third quadrant.
8 . The method of claim 4 , wherein forming the opening line includes performing a first sub-cutting process using the first starting point, the first intersection point, and the first end point, and performing a second sub-cutting process using the second starting point, the second intersection point, and the second end point.
9 . The method of claim 8 , wherein the first sub-cutting process and the second sub-cutting process are alternately and repeatedly performed.
10 . The method of claim 2 , wherein forming the opening line includes forming a tip portion in an area corresponding to the intersection point.
11 . The method of claim 1 , further comprising: forming an opening by removing portions of the polarizing plate and the display panel cut by the opening line after forming the opening line.
12 . The method of claim 11 , further comprising: stacking a window substrate on the polarizing plate to cover the opening.
13 . An electronic device, comprising: a display panel; a polarizing plate disposed on the display panel; and an opening penetrating the polarizing plate and the display panel and including a tip portion, wherein the tip portion is spaced apart along an opening line from an intersecting point where a virtual vertical line passing through a center of the opening and perpendicular to a stretching axis of the polarizing plate meets the opening line that defines a circumference of the opening.
14 . The electronic device of claim 13 , wherein the tip portion has a recessed curved surface in an outward direction of the opening, and a distance between a central point of the opening line included in the tip portion and a peak point of the curved surface is in a range from about 10 μm to about 90 μm.
15 . The electronic device of claim 13 , wherein an angle between the tip portion, the center of the opening, and the intersecting point exceeds about 0° and is less than about 45°.
16 . The electronic device of claim 15 , wherein the angle is in a range from about 1° to about 40°.
17 . The electronic device of claim 13 , wherein the tip portion includes a first tip portion and a second tip portion spaced apart along the opening line.
18 . The electronic device according to claim 17 , wherein the first tip portion and the second tip portion are formed at positions symmetrical to each other with respect to the center of the opening.
19 . The electronic device according to claim 13 , further comprising: a touch sensor layer disposed between the display panel and the polarizing plate, wherein the opening penetrates the polarizing plate, the touch sensor layer, and the display panel.
20 . The electronic device according to claim 13 , further comprising: a functional device inserted into the opening or arranged to overlap the opening, wherein the functional device includes at least one of an optical device, an acoustic element, and a sensor device.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application claims priority under 35 U.S. C. § 119 to Korean Patent Applications No. 10-2024-0153181 filed on Nov. 1, 2024, and 10-2025-0060565 filed on May 9, 2025, the disclosure of which is incorporated by reference herein in its entirety. TECHNICAL FIELD Embodiments of the present disclosure relate to an electronic device and a method of manufacturing the same. More particularly, embodiments of the present disclosure relate to an electronic device including a display panel and a method of manufacturing the same. DISCUSSION OF RELATED ART In a display device such as an organic light-emitting diode (OLED) display device and a liquid display device (LCD), a display substrate including, e.g., a thin film transistor (TFT) and various types of wiring, is provided. A display structure including electrodes and an emission layer may be formed on the display substrate. Recently, electronic devices in which a sensor, a camera, etc., are combined with a display device to implement a display function are being implemented in the form of, e.g., a smartphone, a monitor, a vehicle screen, etc. SUMMARY According to an aspect of the present disclosure, there is provided an electronic device having improved optical property and mechanical reliability. According to an aspect of the present disclosure, there is provided a method of manufacturing an electronic device having improved optical property and mechanical reliability. According to an embodiment of the present disclosure, a method of manufacturing an electronic device includes providing a preliminary display device including a display panel and a polarizing plate stacked on the display panel, in which the preliminary display device includes an opening processing area defined by an opening processing line. The method further includes forming an opening line by irradiating the opening processing line with a laser beam. Irradiating the opening processing line with the laser beam begins at an intersection point on the opening processing line. The intersection point is spaced apart, in a laser movement direction, from a crack point at which a virtual vertical line perpendicular to a stretching axis of the polarizing plate and passing through a center of the opening processing area intersects the opening processing line. In some embodiments, forming the opening line includes irradiating a first region between a starting point, located adjacent to the intersection point in the opening processing area, and the intersection point with the laser beam to form a cutting start line. The method further includes irradiating the opening processing line with the laser beam from the intersection point along the opening processing line to form an opening formation line. The method further includes irradiating a second region between the intersection point and an end point, located adjacent to the intersection point in the opening processing area, with the laser beam, after the opening formation line reaches the intersection point, to form a cutting end line. In some embodiments, an angle formed by the intersection point, the center of the opening processing area, and the crack point exceeds about 0° and is less than about 45°. In some embodiments, the crack point includes a first crack point and a second crack point which face each other with the center of the opening processing area interposed therebetween. The intersection point includes a first intersection point and a second intersection point which are adjacent to the first crack point and the second crack point, respectively. The starting point includes a first starting point and a second starting point which are adjacent to the first intersection point and the second intersection point, respectively. The end point includes a first end point and a second end point which are adjacent to the first intersection point and the second intersection point, respectively. In some embodiments, the first intersection point and the second intersection point are symmetrical with respect to the center of the opening processing area. In some embodiments, the opening processing area is divided into a first quadrant, a second quadrant, a third quadrant, and a fourth quadrant from the first crack point along the laser movement direction. The first intersection point is located on a portion of the opening processing line in the first quadrant, and the second intersection point is located on a portion of the opening processing line in the third quadrant. In some embodiments, the first starting point and the first end point are located in the first quadrant, and the second starting point and the second end point are located in the third quadrant. In some embodiments, forming the opening line includes performing a first sub-cutting process using the first starting point, the first intersection point, and the first end point, and performing a second sub-cutting process using the second starting point, the sec