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CN-122029499-A - Electronic device including flexible display

CN122029499ACN 122029499 ACN122029499 ACN 122029499ACN-122029499-A

Abstract

The present disclosure relates to electronic devices including flexible displays using patterned glass. The electronic device may include a flexible display having a folding region that can be bent at a predetermined angle or more in at least one of an inward or outward direction by means of an external force. The ribs and slits of the specific pattern may repeatedly extend in a direction parallel to the folding axis at the folded portion provided on the glass layer of the flexible display corresponding to the folding region. The slit length may be determined based on the thickness of the glass layer and/or the modulus of the polymer filling the slit, the slit length corresponding to the distance between the first bridge corresponding to the start of the slit and the second bridge corresponding to the end of the slit. The first and second bridges may be connected across the ribs such that the first and second ribs arranged parallel to each other on both sides of the slit are substantially perpendicular to the folding axis.

Inventors

  • Li baola
  • Jin Shiji
  • LIU TAIHENG
  • PU ZHENGGUI
  • Bian Kuixuan
  • BIAN TINGYUAN
  • Liu Xiulie
  • LI YUANHAO
  • ZHAO YINGGUI

Assignees

  • 三星电子株式会社

Dates

Publication Date
20260512
Application Date
20240927
Priority Date
20231017

Claims (15)

  1. 1. An electronic device (200), comprising: A flexible display (299) having a folding region (400) bendable in at least one direction by a predetermined angle or more, Wherein, in the glass layer (350) included in the folding region (400), the ribs (353) and the slits (351) of the specific pattern repeatedly extend in a direction parallel to the folding axis (A), Wherein a slit length (D3) corresponding to a distance between a first bridge corresponding to a start point of the slit (351) and a second bridge corresponding to an end point of the slit (351) is determined based on at least one of a thickness of the glass layer (350) or a modulus of a polymer filling the slit (351), and Wherein the first bridge and the second bridge are configured to connect a first rib and a second rib disposed in parallel on two opposite sides of the slit (351).
  2. 2. The electronic device (200) of claim 1, wherein the slit length (D3) is determined proportional to a thickness of the glass layer (350) or the modulus of the polymer filling the slit (351).
  3. 3. The electronic device (200) according to claim 1 or 2, wherein the slit length (D3) is determined to be in the range of 2 mm to 12 mm.
  4. 4. The electronic device (200) of any of claims 1-3, wherein the rib (353), the first bridge, or the second bridge has a width of 0.5 mm or less.
  5. 5. The electronic device (200) according to claim 1, wherein the specific pattern has a rectilinear shape taking into account the slit length (D3) and an LED arrangement for reducing moire corresponding to a panel layer (310) provided below the glass layer.
  6. 6. The electronic device (200) of claim 1, wherein the number of consecutive repetitions of the particular pattern having a chevron shape or V shape is determined based on the slit length (D3), and Wherein the number of times is two or more times.
  7. 7. The electronic device (200) of claim 1, wherein the slit length (D3) is determined based on at least one of a width or a number of repetitions of the particular pattern.
  8. 8. The electronic device (200) according to claim 1, wherein a plurality of slits and a plurality of ribs extend in the folded portion in a direction perpendicular to the folding axis (a), Wherein the start and end points of odd-numbered slits included in the plurality of slits are arranged to coincide in the vertical direction at a first position of the folding axis, and Wherein the start and end points of even numbered slits included in the plurality of slits are arranged to coincide in the vertical direction at the second position of the folding axis.
  9. 9. The electronic device (200) according to claim 1, wherein a plurality of slits and a plurality of ribs extend in the folded portion in a direction perpendicular to the folding axis (a), and Wherein the start and end points of the plurality of slits are arranged offset in a perpendicular direction to the folding axis (a).
  10. 10. The electronic device (200) of claim 1, wherein the flexible display (299) comprises: a panel layer (310) for displaying visual information; The glass layer (350) being stacked so as to be located above a screen on which the visual information is displayed in the panel layer (310), and A protective layer (370) the side surfaces of the glass layer (350) being sequentially coated with at least two polymers having different moduli, Wherein the slit (351) is filled with a polymer having a relatively low modulus among the at least two polymers.
  11. 11. The electronic device (200) of claim 10, wherein the protective layer (370) on the side surface of the glass layer (350) comprises: a first coating layer produced by one-time coating with a first polymer included in the at least two polymers, and A second coating layer produced by secondary coating with a second polymer included in the at least two polymers, Wherein the first polymer has a relatively lower modulus than the second polymer.
  12. 12. The electronic device (200) of claim 10, wherein the protective layer (370) on the side surface of the glass layer (350) comprises: a first coating layer produced by one-time coating with a first polymer included in the at least two polymers, and A second coating layer produced by secondary coating with a second polymer included in the at least two polymers, Wherein the first polymer has a relatively lower modulus of elasticity than the second polymer.
  13. 13. The electronic device (200) according to claim 11 or 12, wherein a thickness of the first coating or the second coating on the side surface of the glass layer (350) is determined to be in the range of 0.05 mm to 1mm.
  14. 14. The electronic device (200) of any of claims 10-12, wherein the polymer filling the slit (351) has substantially the same refractive index as the glass layer (350).
  15. 15. The electronic device (200) of claim 1, wherein the slit (351) is one of a via or a recess, wherein the thickness of the glass layer (350) is included in a range of 50 μιη to 500 μιη.

Description

Electronic device including flexible display Technical Field The present disclosure relates to electronic devices including flexible displays using patterned glass. Background An electronic device (e.g., a smart phone or tablet) may provide visual information to a user using a display. A form factor (form factor) in which portability and/or information providing convenience are taken into consideration may be applied to an electronic device. The convenience of information provision may be defined by the amount of visual information that the electronic device can pass through the display at one time. For example, an electronic device having a large display area may have relatively higher convenience in providing visual information than an electronic device having a small display area. Electronic devices are experiencing changes in form factor that are oriented to increase portability while also improving information providing convenience. For example, the electronic device may have a form factor capable of changing the display area, such as being rollable, slidable, or foldable, instead of a conventional form factor such as a bar type. An electronic device having a form factor capable of changing a display area (hereinafter referred to as a "flexible display device") may include a flexible display capable of realizing shape deformation of the display by bending or folding. As the number or frequency of deformation of the flexible display increases, stress exceeding the elastic limit (e.g., yield strength) of the protective layer may be applied and plastic deformation may occur. In this case, distortion or degradation of transparency may occur in the flexible display due to creases or scratches. The lifetime of the flexible display may be shortened due to repeated deformation and the components and wires may be damaged. Disclosure of Invention Solution to the problem According to an embodiment of the present disclosure, an electronic device may include a flexible display having a folding region bendable in at least one direction by a predetermined angle or more, ribs and slits of a specific pattern may repeatedly extend in a direction parallel to a folding axis a in a glass layer included in the folding region, a slit length corresponding to a distance between a first bridge and a second bridge may be determined based on at least one of a thickness of the glass layer or a modulus of a polymer filling the slit, the first bridge corresponds to a start point of the slit, the second bridge corresponds to an end point of the slit, and the first bridge and the second bridge may be configured to connect the first rib and the second rib disposed in parallel on two opposite sides of the slit. Drawings Fig. 1 is a block diagram illustrating an exemplary electronic device capable of performing the operations described in this disclosure. Fig. 2 a-2 f illustrate an electronic device having an inwardly folded housing structure according to various embodiments of the present disclosure. Fig. 3 is a stacked structural diagram illustrating a display in an electronic device according to various embodiments of the present disclosure. Fig. 4a is a plan view illustrating a flexible display including a folding region in an electronic device according to various embodiments of the present disclosure. Fig. 4b is a side cross-sectional view illustrating a display protection member included in a flexible display in an electronic device according to various embodiments of the present disclosure. Fig. 4c is an enlarged cross-sectional view illustrating a folded hinge portion for a flexible display in an electronic device according to various embodiments of the present disclosure. Fig. 5a is a view illustrating an example of a folding area provided based on a folding axis for a folding operation in an electronic device according to various embodiments of the present disclosure. Fig. 5b or 5c is a side view illustrating a folding operation of a display protection member according to various embodiments of the present disclosure. Fig. 6a to 6c are enlarged plan views illustrating a partial region among folded regions included in a glass layer of a flexible display according to an embodiment of the present disclosure. Fig. 7a or 7b are block diagrams illustrating pattern glass in a folding region of a flexible display according to an embodiment of the present disclosure. Fig. 8a is a side cross-sectional view (e.g., A-A' of fig. 5 a) of a flexible display according to an embodiment of the present disclosure. Fig. 8B is a sectional view seen from the cutting line (B-B') of fig. 8 a. Fig. 9a to 9f are cross-sectional views (e.g., A-A' of fig. 5 a) of a display protection member included in a flexible display to which a side protection coating is applied according to an embodiment of the present disclosure. Fig. 10 is a view illustrating a process for forming a side protection layer included in a flexible display according to an embodiment of