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KR-102961124-B1 - ELECTRONIC DEVICE

KR102961124B1KR 102961124 B1KR102961124 B1KR 102961124B1KR-102961124-B1

Abstract

An electronic device of one embodiment may have excellent optical reliability by including a base layer, a light-emitting element layer comprising a pixel defining film disposed on the base layer and having an opening defined therein and a light-emitting layer disposed within the opening, an inorganic deposition layer disposed on the light-emitting element layer, an encapsulation layer disposed on the inorganic deposition layer, and a light control layer disposed on the encapsulation layer comprising a base portion, a light-absorbing particle having a maximum absorption wavelength of 370 nm or more and 400 nm or less, and a colorant.

Inventors

  • 강혜지
  • 김태호
  • 권오정
  • 이홍연
  • 정승연

Assignees

  • 삼성디스플레이 주식회사

Dates

Publication Date
20260507
Application Date
20211214

Claims (20)

  1. Base layer; A light-emitting element layer comprising a pixel defining film disposed on the base layer and having an opening defined therein, and a light-emitting layer disposed within the opening; An inorganic deposition layer disposed on the above-mentioned light-emitting element layer; A sealing layer disposed on the above-mentioned inorganic deposition layer; and A light control layer disposed on the above-mentioned encapsulation layer and comprising a base portion, light-absorbing particles having a maximum absorption wavelength of 370 nm or more and 400 nm or less, and pigments; and The above-mentioned pigments include a pigment that absorbs light with a wavelength of 480 nm or more and 500 nm or less, and a pigment that absorbs light with a wavelength of 585 nm or more and 600 nm or less, and an electronic device comprising these pigments.
  2. In paragraph 1, An electronic device comprising a light control layer containing 0.01 wt% or more and 5.00 wt% or less of the light-absorbing particles based on the total weight of the light control layer.
  3. In paragraph 2, The above light - absorbing particles comprise at least one of SiO2 , TiO2 , CeO2 , ZnO, ZrO2 , Al2O3 , CaCO3 , MgO, GeO2 , and Y2O3 , in an electronic device.
  4. In paragraph 1, An electronic device having an average diameter of the light-absorbing particles of 5 nm or more and 100 nm or less.
  5. In paragraph 1, The above-mentioned pigments comprise at least one of anthraquinone compounds, phthalocyanine compounds, azo compounds, perylene compounds, xanthen compounds, diimonium compounds, dipyromethen compounds, tetraazaporphyrin compounds, porphyrin compounds, squaryllium compounds, oxazine compounds, triarylmethane compounds, and cyanine compounds, in an electronic device.
  6. In paragraph 1, It further includes a sensor layer disposed between the above-mentioned encapsulation layer and the above-mentioned light control layer, and The sensor layer is an electronic device placed directly on the encapsulation layer.
  7. In paragraph 1, The electronic device comprising at least one of Al, Ag, Mg, Cr, Ti, Ni, Au, Ta, Cu, Ca, Co, Fe, Mo, W, Pt, Yb , SiO2 , TiO2 , ZrO2 , Ta2O5 , HfO2 , Al2O3 , ZnO, Y2O3 , BeO , MgO, PbO2 , WO3 , SiNx, LiF , CaF2 , MgF2 , and CdS.
  8. In paragraph 1, An electronic device in which the change in the MPCD (minimum perceptible color difference) of the light control layer before and after irradiation with ultraviolet light is 10 or less.
  9. In paragraph 1, The above light control layer is an electronic device having a transmittance of 10% or less for light ranging from 370 nm to 400 nm.
  10. In paragraph 1, The above light control layer is provided as a single layer in an electronic device.
  11. In paragraph 1, The above-mentioned inorganic deposition layer is provided as a single layer in an electronic device.
  12. In an electronic device divided into a light-emitting region and a non-light-emitting region adjacent to the light-emitting region, Display module; and A window disposed on the above-mentioned display module; comprising, The above display module is Base layer; A light-emitting element layer comprising a pixel defining film disposed on the base layer and having an opening defined that overlaps with the light-emitting region, and a light-emitting layer disposed within the opening; An inorganic deposition layer disposed on the above-mentioned light-emitting element layer; A sealing layer disposed on the above-mentioned inorganic deposition layer; and A light control layer disposed on the above encapsulation layer, comprising a base portion, light-absorbing particles, and pigments, and having a transmittance of 10% or less for light with a wavelength of 370 nm or more and 400 nm or less; The light-absorbing particles comprising the above pigments, which include a pigment that absorbs light with a wavelength of 480 nm or more and 500 nm or less, and a pigment that absorbs light with a wavelength of 585 nm or more and 600 nm or less , are an electronic device comprising at least one of SiO2 , TiO2 , CeO2 , ZnO , ZrO2 , Al2O3 , CaCO3 , MgO, GeO2 , and Y2O3 .
  13. In Paragraph 12, The above light-absorbing particle is an electronic device having a maximum absorption wavelength of 370 nm or more and 400 nm or less.
  14. In Paragraph 12, An electronic device comprising a light control layer containing 0.01 wt% or more and 5.00 wt% or less of the light-absorbing particles based on the total weight of the light control layer.
  15. In Paragraph 12, An electronic device having an average diameter of the light-absorbing particles of 5 nm or more and 100 nm or less.
  16. In Paragraph 12, The light control layer overlaps with the light-emitting region and the non-light-emitting region, and is provided as a single layer in an electronic device.
  17. In Paragraph 16, The light control layer is an electronic device positioned at the top of the display module.
  18. In Paragraph 12, The above-described inorganic deposition layer overlaps the above-described light-emitting region and the above-described non-light-emitting region, and is provided as a single layer in an electronic device.
  19. In Paragraph 12, The electronic device comprising at least one of Al, Ag, Mg, Cr, Ti, Ni, Au, Ta, Cu, Ca, Co, Fe, Mo, W, Pt, Yb , SiO2 , TiO2 , ZrO2 , Ta2O5 , HfO2 , Al2O3 , ZnO, Y2O3 , BeO , MgO, PbO2 , WO3 , SiNx, LiF , CaF2 , MgF2 , and CdS.
  20. In Paragraph 12, The above light control layer is an electronic device that does not include a polarization layer.

Description

ELECTRONIC DEVICE The present invention relates to an electronic device comprising a light control layer including light-absorbing particles. Various electronic devices used in multimedia devices such as televisions, mobile phones, tablet computers, and game consoles are being developed. Electronic devices may include various optical functional layers to provide users with high-quality color images. Meanwhile, research on thin electronic devices is currently underway to realize various types of electronic devices, such as electronic devices including curved surfaces, rollable electronic devices, or foldable electronic devices. Furthermore, thin electronic devices can be realized by reducing the number of optical functional layers and including optical functional layers that incorporate various functions. FIG. 1 is a perspective view of an electronic device according to one embodiment. FIG. 2 is an exploded perspective view of an electronic device according to one embodiment. FIG. 3 is a plan view of a display module according to one embodiment. FIG. 4 is a cross-sectional view of a display module according to one embodiment. FIG. 5 is an enlarged view of a portion of a light control layer according to one embodiment. Figure 6a is a graph showing the transmittance of a light control layer according to an embodiment before and after irradiation with ultraviolet light, by wavelength. Figure 6b is a graph showing the change in transmittance by wavelength before and after ultraviolet light irradiation of the light control layer according to the comparative example. Figure 7 is a graph showing the color temperature change of a light control layer according to one embodiment. FIG. 8 is a graph showing the change in the minimum perceptible color difference (MPCD) of a light control layer according to one embodiment. FIG. 9a is a diagram showing the color change of a light control layer before and after ultraviolet light irradiation according to an embodiment. Figure 9b is a diagram showing the color change of a light control layer before and after ultraviolet light irradiation according to a comparative example. The present invention is capable of various modifications and may take various forms, and specific embodiments are illustrated in the drawings and described in detail in the text. However, this is not intended to limit the invention to the specific disclosed forms, and it should be understood that the invention includes all modifications, equivalents, and substitutions that fall within the spirit and scope of the invention. In this specification, where a component (or region, layer, part, etc.) is described as being "on," "connected," or "combined" with another component, it means that it may be directly placed/connected/combined with the other component, or that a third component may be placed between them. Meanwhile, in the present application, "direct placement" may mean that there are no additional layers, films, regions, plates, etc. added between a part such as a layer, film, region, or plate and another part. For example, "direct placement" may mean that two layers or two members are placed without using additional members such as adhesive members between them. Identical reference numerals denote identical components. Additionally, in the drawings, the thicknesses, proportions, and dimensions of the components are exaggerated for the effective illustration of the technical content. "And/or" includes all one or more combinations that the associated configurations can define. Terms such as "first," "second," etc., may be used to describe various components, but said components should not be limited by said terms. These terms are used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present invention, the first component may be named the second component, and similarly, the second component may be named the first component. A singular expression includes a plural expression unless the context clearly indicates otherwise. Additionally, terms such as "below," "lower side," "above," and "upper side" are used to describe the relationships between the components illustrated in the drawings. These terms are relative concepts and are described based on the directions indicated in the drawings. In this specification, "placed on" may refer to a case where a component is placed not only on the upper side but also on the lower side. Unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as generally understood by those skilled in the art to which the present invention pertains. Furthermore, terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an overly ideal or overly formal sense unless explicitly defined herein. Terms such as "includ