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CN-121999681-A - Display device and electronic device including the same

CN121999681ACN 121999681 ACN121999681 ACN 121999681ACN-121999681-A

Abstract

The application provides a display device and an electronic device. The display device defines at least one fold area. The display device includes a display panel and a cover window disposed on the display panel. The cover window includes a base film and a functional layer disposed on the base film and including an anti-fingerprint material. At least a portion of the anti-fingerprint material floats on the outermost surface of the functional layer.

Inventors

  • LI XIRONG
  • AN CHENGGUO
  • Han Zhaojuan
  • GAO ZHISHAN
  • Jin Tingxu
  • YAN ZHIMEI
  • YIN ZHUHAO
  • LI SHENGLI

Assignees

  • 三星显示有限公司

Dates

Publication Date
20260508
Application Date
20251031
Priority Date
20241105

Claims (20)

  1. 1. A display device defining at least one fold area, the display device comprising: A display panel configured to display an image, and A cover window disposed on the display panel, Wherein the cover window comprises a base film and a functional layer disposed on the base film and having a thickness in the range of 2 micrometers to 21 micrometers and including an end value, Wherein, the functional layer includes: a hard coating layer disposed on the base film and including a hard coating agent, and A refractive layer disposed on the hard coat layer and comprising an anti-fingerprint material, and Wherein at least a portion of the anti-fingerprint material is disposed at an outermost surface of the refractive layer.
  2. 2. The display device of claim 1, wherein the refractive layer comprises at least one low refractive index layer comprising a low refractive index material, and Wherein the at least one low refractive index layer comprises the anti-fingerprint material, and at least a portion of the anti-fingerprint material is disposed at an outermost surface of the at least one low refractive index layer.
  3. 3. The display device according to claim 1, wherein the refractive layer includes at least one high refractive index layer including a high refractive index material and at least one low refractive index layer disposed on the at least one high refractive index layer and including a low refractive index material, and Wherein the at least one low refractive index layer comprises the anti-fingerprint material, and at least a portion of the anti-fingerprint material is disposed at an outermost surface of the at least one low refractive index layer.
  4. 4. The display device of claim 1, wherein the anti-fingerprint material comprises at least one fluorine-based material of polytetrafluoroethylene, fluoroethylene propylene, and perfluoropolyether, and fluorinated silane, or at least one silicon-based material of silica nanoparticles, hexamethyldisiloxane, tetraethoxysilane, polydimethylsiloxane, and phenylmethylsilicon.
  5. 5. The display device according to claim 1, wherein a density of the anti-fingerprint material is higher in a portion of the refractive layer away from the base film than in a portion of the refractive layer close to the base film.
  6. 6. The display device of claim 1, wherein the refractive layer has a surface contact angle in a range of 100 degrees to 120 degrees and includes an end value.
  7. 7. The display device of claim 1, further comprising an adhesive layer disposed between the display panel and the cover window, Wherein the adhesive layer comprises a pressure sensitive adhesive as a semi-fluid material.
  8. 8. The display device of claim 7, wherein at least one of the base film, the hard coat layer, and the adhesive layer comprises an ultraviolet blocking material, and Wherein the ultraviolet blocking material is configured to transmit 10% or less of ultraviolet light having a wavelength of 380nm or less.
  9. 9. The display device of claim 8, wherein the ultraviolet blocking material is uniformly distributed within the at least one of the base film, the hard coating layer, and the adhesive layer.
  10. 10. The display device according to claim 1, wherein the hard coating agent comprises at least one material of a silicone resin, an epoxy resin, and an acrylic-based resin, and Wherein the hard coating has a thickness in the range of 1 to 20 microns and inclusive.
  11. 11. The display device according to claim 2, wherein the low refractive index material includes at least one of an ammonia-based low refractive index material, a silane-based low refractive index material, and an acrylate-based low refractive index material, and Wherein the at least one low refractive index layer has a thickness in the range of 10 nm to 250 nm and inclusive.
  12. 12. The display device according to claim 3, wherein the high refractive index material comprises at least one high refractive index inorganic material of titanium oxide, zirconium dioxide, silicon carbide, zinc sulfide, and titanium carbide, or comprises at least one high refractive index organic material of polyimide and polythiophene, and Wherein the at least one high refractive index layer has a thickness in the range of 10 nm to 250 nm and inclusive.
  13. 13. The display device according to claim 1, wherein the display panel includes: a substrate divided into a display area and a peripheral area; An organic light emitting diode disposed on the substrate in the display region, and An encapsulation layer sealing the organic light emitting diode, Wherein the display device further includes, between the display panel and the cover window: A touch layer disposed on the encapsulation layer, and And a color filter layer disposed on the touch layer.
  14. 14. A display device comprising at least one fold area, the display device comprising: A display panel configured to display an image, and A cover window disposed on the display panel, Wherein the cover window comprises a base film and a functional layer, Wherein, the functional layer includes: A hard coating layer disposed on the base film and including a hard coating agent; a primer layer disposed on the hard coat layer and including a primer material, and An anti-fingerprint layer disposed on the primer layer and comprising an anti-fingerprint material, Wherein the primer layer has a thickness in the range of 5 nm to 30 nm and inclusive, and Wherein the primer material comprises at least one of a silane-based material, an acrylate-based material, and an epoxy-based material.
  15. 15. The display device of claim 14, further comprising a low refractive index layer between the hard coat layer and the primer layer, the low refractive index layer comprising a low refractive index material and having a thickness in a range of 10 nanometers to 250 nanometers and inclusive.
  16. 16. The display device of claim 15, further comprising a high refractive index layer between the hard coat layer and the low refractive index layer, the high refractive index layer comprising a high refractive index material and having a thickness in a range of 10nm to 250 nm and inclusive.
  17. 17. The display device of claim 14, wherein the anti-fingerprint layer has a thickness in a range of 5 nm to 30 nm and inclusive, and Wherein the anti-fingerprint material comprises at least one of a fluorine-based material and a silicon-based material.
  18. 18. An electronic device, comprising: A controller configured to generate a scan input signal; a power module configured to generate a scan input voltage; A display panel including a substrate divided into a display region in which pixel circuits are arranged and a peripheral region surrounding the display region, a scan driver arranged in the peripheral region, the scan driver configured to receive the scan input signals and the scan input voltages and output scan signals to the pixel circuits, and an encapsulation layer sealing at least the display region; The touch layer is arranged on the packaging layer; a color filter layer disposed on the touch layer, and A cover window disposed on the color filter layer, Wherein, the cover window includes: a base film, and A functional layer disposed on the base film, having a thickness in a range of 2 micrometers to 21 micrometers and including an end value, and including an anti-fingerprint material, wherein at least a portion of the anti-fingerprint material is disposed at an outermost surface of the functional layer, and Wherein the anti-fingerprint material comprises at least one of a fluorine-based material and a silicon-based material.
  19. 19. The electronic device of claim 18, wherein the functional layer comprises a hard coating disposed on the base film, the hard coating comprising a hard coating agent and having a thickness in a range of 1 to 20 microns and inclusive, and Wherein the hard coat layer includes the anti-fingerprint material, and at least a portion of the anti-fingerprint material is disposed at an outermost surface of the hard coat layer.
  20. 20. The electronic device of claim 18, wherein the functional layer comprises: A hard coating layer provided on the base film, including a hard coating agent, and having a thickness in a range of 1 to 20 micrometers and including an end value, and At least one low refractive index layer disposed on the hard coat layer, having a thickness smaller than that of the hard coat layer, and comprising a low refractive index material, and Wherein the at least one low refractive index layer comprises the anti-fingerprint material, and at least a portion of the anti-fingerprint material is disposed at an outermost surface of the at least one low refractive index layer.

Description

Display device and electronic device including the same Cross Reference to Related Applications The present application claims priority from korean patent application No. 10-2024-0154832 filed at the korean intellectual property office on day 11 and 5 of 2024, the entire contents of which are incorporated herein by reference. Technical Field The present disclosure relates to a display device, and more particularly, to a display device including a cover window having a functional layer and an electronic device including the display device. Background Electronic devices typically include a display panel to generate an image for a user. Conventionally, display panels are flat and rigid. However, modern display panels may be capable of being bent to a desired curvature, or may be designed to be repeatedly folded to a significant extent without cracking or otherwise sustaining breakage. Such a display panel is generally referred to as a foldable display panel. Although conventional display panels may utilize high transparency windows, such as windows made of thick glass, in order to create a high quality visual appearance and provide excellent scratch resistance, foldable display panels may not use thick glass windows and may therefore suffer from reduced transparency and/or scratch resistance. Disclosure of Invention The display device includes at least one folding area, and includes a display panel configured to display an image, and a cover window disposed on the display panel. The cover window includes a base film, and a functional layer disposed on the base film and having a thickness in a range of 2 micrometers to 21 micrometers (inclusive). The functional layer includes a hard coat layer disposed on the base film and including a hard coating agent, and a refractive layer disposed on the hard coat layer and including an anti-fingerprint material. At least a portion of the anti-fingerprint material floats on the outermost surface of the refractive layer. The refractive layer may comprise at least one low refractive index layer comprising a low refractive index material. The at least one low refractive index layer may comprise a low refractive index material and may comprise an anti-fingerprint material. At least a portion of the anti-fingerprint material may float on an outermost surface of the at least one low refractive index layer. The refractive layer may include at least one high refractive index layer including a high refractive index material and at least one low refractive index layer disposed on the at least one high refractive index layer and including a low refractive index material. The at least one low refractive index layer may comprise a low refractive index material and may comprise an anti-fingerprint material. At least a portion of the anti-fingerprint material may float on an outermost surface of the at least one low refractive index layer. The anti-fingerprint material may include at least one of a hydrophobic material, an oleophobic material, a fluorine-based material, and a silicon-based material. The anti-fingerprint material may include at least one fluorine-based material of Polytetrafluoroethylene (PTFE), fluoroethylene propylene (FEP) and perfluoropolyether (PFPE) and fluorinated silane or at least one silicon-based material of silica (SiO 2) nanoparticles, hexamethyldisiloxane (HMDSO), tetraethoxysilane (TEOS), polydimethylsiloxane (PDMS) and benzyl silicon. The density of the anti-fingerprint material may be higher in a portion of the refractive layer remote from the base film than in a portion of the refractive layer close to the base film. The refractive layer may have a surface contact angle of 100 degrees to 120 degrees (inclusive). The display device may further include an adhesive layer disposed between the display panel and the cover window. The adhesive layer may include a Pressure Sensitive Adhesive (PSA) that is a semi-fluid material. At least one of the base film, the hard coat layer, and the adhesive layer may include an ultraviolet blocking material. The ultraviolet blocking material may transmit 10% or less of ultraviolet light having a wavelength of 380nm or less. The ultraviolet blocking material may be uniformly distributed within the at least one of the base film, the hard coat layer, and the adhesive layer. The hard coating agent may include at least one material of a silicone resin, an epoxy resin, and an acrylic-based resin, and the thickness of the hard coating layer may be in the range of 1 to 20 micrometers (inclusive). The low refractive index material may include at least one of an ammonia-based low refractive index material, a silane-based low refractive index material, and an acrylate-based low refractive index material, and the thickness of the at least one low refractive index layer may be in a range of 10nm to 250 nm (inclusive). The high refractive index material may include at least one high refractive index inorganic material of titanium oxide,