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EP-4739009-A1 - COVER PLATE INCLUDING PLURALITY OF LAYERS AND ELECTRONIC DEVICE INCLUDING SAME

EP4739009A1EP 4739009 A1EP4739009 A1EP 4739009A1EP-4739009-A1

Abstract

An exemplary cover plate includes: a base plate: a first layer which is disposed on the base plate and includes at least one refractive layer for refracting light; a second layer disposed on the first layer and including silicon; a third layer which is disposed on the second layer and has a reflectivity equal to or less than a threshold value with respect to a laser having a designated wavelength range; and a plurality of patterns formed on at least one of the base plate, the first layer, the second layer, and the third layer. The absorption rate of the second layer with respect to the laser is higher than the absorption rate of the base plate with respect to the laser. Various other embodiments may be possible.

Inventors

  • LIM, Jiwoon
  • CHOI, Jongmun
  • CHOI, HYUNSUK
  • LEE, HOSOON

Assignees

  • Samsung Electronics Co., Ltd.

Dates

Publication Date
20260506
Application Date
20240605

Claims (15)

  1. A cover plate comprising: a base plate; a first layer disposed on the base plate and comprising at least one refractive layer for refracting light; a second layer disposed on the first layer and comprising silicon; a third layer, disposed on the second layer, having a reflexibility equal to or less than a threshold value for a laser with a specified wavelength range, and configured to transmit the laser; and a plurality of patterns formed on at least one of the base plate, the first layer, the second layer, or the third layer, wherein an absorption rate of the second layer for the laser is higher than an absorption rate of the base plate for the laser.
  2. The cover plate of claim 1, wherein the specified wavelength range is from 300 nm to 1,100 nm.
  3. The cover plate of claim 1 or 2, wherein the threshold value is 50%.
  4. The cover plate of any one of claims 1 to 3, wherein the second layer forms a heat affected zone formed on at least one of the first layer, the second layer, the third layer, or the base plate, based on the laser transmitted through the third layer.
  5. The cover plate of claim 4, wherein the plurality of patterns are formed in the heat affected zone.
  6. The cover plate of any one of claims 1 to 5, wherein the first layer and the third layer comprise silicon.
  7. The cover plate of any one of claims 1 to 6, wherein the base plate comprises at least one of glass or polymer.
  8. The cover plate of any one of claims 1 to 7, wherein the plurality of patterns have a depth based on an intensity of the laser.
  9. The cover plate of any one of claims 1 to 8, wherein the plurality of patterns include a first pattern and a second pattern, wherein the first pattern has a first depth, and wherein the second pattern is spaced apart from the first pattern and has a second depth.
  10. The cover plate of claim 9, wherein the first depth is different from the second depth.
  11. The cover plate of any one of claims 1 to 10, wherein the plurality of patterns include: a first pattern, a second pattern in contact with the first pattern, and a third pattern in contact with the second pattern, wherein the first pattern has a first depth, wherein the second pattern has a second depth shallower than the first depth (441a), and wherein the third pattern has a third depth shallower than the second depth (442a).
  12. The cover plate of any one of claims 1 to 11, wherein the first layer attaches the second layer to the base plate.
  13. The cover plate of any one of claims 1 to 12, wherein the third layer includes: a first refractive layer having a first refractive index, and a second refractive layer having a second refractive index different from the first refractive index.
  14. The cover plate of any one of claims 1 to 13, wherein the first layer and the third layer comprise at least one of a silicon oxide film and a silicon nitride film.
  15. The cover plate of any one of claims 1 to 14, wherein the laser is a nanosecond laser.

Description

[Technical Field] The present disclosure relates to a cover plate including a plurality of layers and an electronic device including the same. [Background Art] An electronic device may include a cover plate forming at least a part of an exterior of the electronic device. The cover plate may include glass (e.g., tempered glass). Since the cover plate is visible from the outside, it may include a plurality of patterns used as a design element of the electronic device. The plurality of patterns may implement color, material, and finishing (CMF) of the electronic device. The plurality of patterns may be formed through a laser ablation process of irradiating a laser to a surface of the cover plate. The above-described information may be provided as a related art for a purpose of helping understanding of the present disclosure. No claim or determination is raised as to whether any of the above-described descriptions may be applied as a prior art related to the present disclosure. [Disclosure] [Technical Solution] A cover plate is provided. The cover plate may include a base plate. The cover plate may include a first layer disposed on the base plate and including at least one refractive layer for refracting light. The cover plate may include a second layer disposed on the first layer and including silicon. The cover plate may include a third layer, disposed on the second layer, having a reflexibility equal to or less than a threshold value for a laser with a specified wavelength range, and configured to transmit the laser. The cover plate may include a plurality of patterns formed on at least one of the base plate, the first layer, the second layer, or the third layer. An absorption rate of the second layer for the laser may be higher than an absorption rate of the base plate for the laser. An electronic device is provided. The electronic device may include a cover plate forming at least a part of an exterior of the electronic device. The cover plate may include a base plate. The cover plate may include a first layer disposed on the base plate and including at least one refractive layer for refracting light. The cover plate may include a second layer disposed on the first layer and including silicon. The cover plate may include a third layer disposed on the second layer, having a reflexibility equal to or less than a threshold value for a laser with a specified wavelength range, and configured to transmit the laser. The cover plate may include a plurality of patterns formed on at least one of the base plate, the first layer, the second layer, or the third layer. An absorption rate of the second layer for the laser may be higher than an absorption rate of the base plate for the laser. [Description of the Drawings] FIG. 1 is a block diagram of an electronic device in a network environment according to an embodiment.FIG. 2 illustrates an exemplary electronic device.FIG. 3 is an exploded perspective view of an exemplary electronic device.FIG. 4 is a cross-sectional view of a portion of an exemplary cover plate.FIG. 5A schematically illustrates a process of irradiating a laser to an exemplary cover plate.FIG. 5B is an enlarged view of enlarging a heat affected zone.FIG. 6 is an enlarged view of enlarging a heat affected zone and a pattern of an exemplary cover plate.FIGS. 7A, 7B, and 7C are cross-sectional views of a portion of an exemplary cover plate including a pattern.FIGS. 7D and 7E are cross-sectional views of a portion of an exemplary cover plate including a protective layer.FIG. 8A is a graph indicating an absorption rate of a cover plate according to a wavelength of a laser.FIG. 8B illustrates a pattern formed on a cover plate according to a comparative example according to an energy intensity of a laser.FIG. 8C illustrates a pattern formed on a cover plate according to an embodiment according to an energy intensity of a laser. [Mode for Invention] FIG. 1 is a block diagram illustrating an electronic device 101 in a network environment 100 according to an embodiment. Referring to FIG. 1, the electronic device 101 in the network environment 100 may communicate with an electronic device 102 via a first network 198 (e.g., a short-range wireless communication network), or at least one of an electronic device 104 or a server 108 via a second network 199 (e.g., a long-range wireless communication network). According to an embodiment, the electronic device 101 may communicate with the electronic device 104 via the server 108. According to an embodiment, the electronic device 101 may include a processor 120, memory 130, an input module 150, a sound output module 155, a display module 160, an audio module 170, a sensor module 176, an interface 177, a connecting terminal 178, a haptic module 179, a camera module 180, a power management module 188, a battery 189, a communication module 190, a subscriber identification module(SIM) 196, or an antenna module 197. In some embodiments, at least one of the components (e.g., th