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KR-20260065631-A - Display device, method of manufacturing the same and electronic device

KR20260065631AKR 20260065631 AKR20260065631 AKR 20260065631AKR-20260065631-A

Abstract

One embodiment of the present invention discloses a display device comprising: a substrate; a thin-film transistor on the substrate; a light-emitting element electrically connected to the thin-film transistor; a thin-film encapsulation layer on the light-emitting element; a scattering layer on the thin-film encapsulation layer; and a color filter layer on the scattering layer, wherein the scattering layer comprises irregular wrinkles.

Inventors

  • 임호

Assignees

  • 삼성디스플레이 주식회사

Dates

Publication Date
20260511
Application Date
20241029

Claims (20)

  1. Substrate; A thin-film transistor on the above substrate; A light-emitting element electrically connected to the above-mentioned thin-film transistor; A thin film encapsulation layer on the light-emitting element above; A scattering layer on the thin film encapsulation layer above; and A color filter layer on the scattering layer above; comprising A display device in which the scattering layer includes irregular wrinkles.
  2. In Article 1, A display device in which the above wrinkles are positioned in the direction in which light from the display device is emitted from the scattering layer.
  3. In Article 1, A display device having a scattering layer thickness of 0.5 μm or more and 10 μm or less.
  4. In Article 1, A display device having a scattering layer with a refractive index of 1.45 or higher and 1.75 or lower.
  5. In Article 1, A display device in which the step difference between the valleys and crests of the scattering layer is 0.1㎛ or more and 8㎛ or less.
  6. In Article 1, The above scattering layer is a display device comprising a photocrosslinking reaction material.
  7. In Article 1, The light-emitting element comprises a pixel electrode, a common electrode located on the pixel electrode, and a light-emitting layer disposed between the pixel electrode and the common electrode. The above display device further includes a pixel defining film comprising a first opening that covers the edge of the pixel electrode and defines a light-emitting region of the light-emitting element, and A display device in which the color filter layer is arranged to correspond to the first opening.
  8. In Article 7, A display device further comprising a black matrix including a second opening located on the pixel defining film and corresponding to the first opening.
  9. In Article 8, A display device comprising at least one of a metal or opaque organic film material, carbon black, carbon nanotubes, or black dye, wherein the black matrix described above comprises at least one of a metal or opaque organic film material, carbon black, carbon nanotubes, or black dye.
  10. In Article 1, The light-emitting element includes a first light-emitting element, a second light-emitting element, and a third light-emitting element arranged spaced apart from each other. A display device in which the first light-emitting element emits red light, the second light-emitting element emits green light, and the third light-emitting element emits blue light.
  11. In Article 10, A display device comprising a color filter layer, wherein the color filter layer comprises a first color filter disposed on the first light-emitting element, a second color filter disposed on the second light-emitting element, and a third color filter disposed on the third light-emitting element.
  12. In Article 11, A display device further comprising a third opening defined by removing a region of the scattering layer below the third color filter.
  13. In Article 1, A display device further comprising a flattening layer disposed between the scattering layer and the color filter layer.
  14. In Article 13, A display device having a refractive index of the planarization layer of 1.20 or higher and 1.44 or lower.
  15. Step of manufacturing a display layer; A step of forming a scattering layer on the above-mentioned display layer; and The method includes the step of forming a color filter layer on the scattering layer; The step of forming a scattering layer is, The method comprises the steps of applying a scattering layer forming material containing a photocrosslinking reaction material onto the above-mentioned display layer and curing the applied scattering layer forming material. A method for manufacturing a display device in which irregular wrinkles are formed in the scattering layer by curing of the scattering layer forming material.
  16. In Article 15, A method for manufacturing a display device in which the above wrinkles are formed on the upper surface of the scattering layer.
  17. In Article 15, A method for manufacturing a display device, comprising the step of manufacturing the above-mentioned display layer, the step of forming a substrate, a light-emitting element on the substrate, and a thin film encapsulation layer on the light-emitting element.
  18. In Article 17, The light-emitting element comprises a pixel electrode, a common electrode located on the pixel electrode, and a light-emitting layer disposed between the pixel electrode and the common electrode. The above display device further includes a pixel defining film comprising a first opening that covers the edge of the pixel electrode and defines a light-emitting region of the light-emitting element, and A method for manufacturing a display device, wherein the color filter layer is arranged to correspond to the first opening.
  19. In Article 18, The light-emitting elements are spaced apart from each other and include a first light-emitting element that emits red light, a second light-emitting element that emits green light, and a third light-emitting element that emits blue light. The color filter layer comprises a first color filter disposed on the first light-emitting element, a second color filter disposed on the second light-emitting element, and a third color filter disposed on the third light-emitting element. A method for manufacturing a display device, further comprising the step of forming a third opening by removing a region of the scattering layer below the third color filter before the step of forming the color filter layer.
  20. In Article 15, A method for manufacturing a display device, further comprising the step of forming a flattening layer between the step of forming the scattering layer and the step of forming the color filter layer.

Description

Display device, method of manufacturing the same and electronic device The embodiments relate to a display device, a method of manufacturing the same, and an electronic device. As various electronic devices such as mobile phones, PDAs, computers, and large-screen TVs advance, diverse types of display devices applicable to them are being developed. For example, display devices widely used in the market include liquid crystal display devices equipped with a backlight unit, or organic light-emitting display devices that emit light of different colors for each pixel area. FIG. 1 is a schematic plan view illustrating a part of a display device according to one embodiment of the present invention. FIG. 2 is a schematic cross-sectional view illustrating an example of part I of the display device shown in FIG. 1. FIG. 3 is a schematic plan view illustrating a portion of a scattering layer according to one embodiment of the present invention. FIGS. 4 to 6 are cross-sectional views according to the manufacturing process of a scattering layer according to one embodiment of the present invention. FIG. 7 is a schematic cross-sectional view illustrating another example of part I of the display device shown in FIG. 1. Figure 8 is an enlarged view of area A shown in Figure 7. FIG. 9 is a schematic cross-sectional view illustrating another example of part I of the display device shown in FIG. 1. FIG. 10 is a block diagram of an electronic device according to embodiments of the present invention. The present invention is capable of various modifications and may have various embodiments; specific embodiments are illustrated in the drawings and described in detail in the detailed description. The effects and features of the present invention, and the methods for achieving them, will become clear by referring to the embodiments described below in detail together with the drawings. However, the present invention is not limited to the embodiments disclosed below but can be implemented in various forms. In the following embodiments, terms such as first, second, etc. are used not in a limiting sense, but for the purpose of distinguishing one component from another component. In the following examples, singular expressions include plural expressions unless the context clearly indicates otherwise. In the following embodiments, terms such as "include" or "have" mean that the features or components described in the specification are present, and do not preclude the possibility that one or more other features or components may be added. In the following embodiments, when a part such as a unit, area, or component is described as being on or above another part, it includes not only cases where it is directly on top of another part, but also cases where another unit, area, or component is interposed in between. In the following embodiments, terms such as "connect" or "combine" do not necessarily imply a direct and/or fixed connection or combination of two members unless the context clearly indicates otherwise, nor do they exclude the interposition of another member between the two members. In the drawings, the size of components may be exaggerated or reduced for convenience of explanation. For example, the size and/or thickness of each component shown in the drawings are arbitrarily depicted for convenience of explanation, and therefore the present invention is not necessarily limited to what is illustrated. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings. When describing with reference to the drawings, identical or corresponding components are given the same reference numerals, and redundant descriptions thereof will be omitted. FIG. 1 is a schematic plan view illustrating a part of a display device according to one embodiment of the present invention. Referring to FIG. 1, the display device (10) includes a display area (DA) that displays an image on a substrate (110) and a peripheral area (PA) that is located outside the display area (DA) and is a non-display area where no image is displayed. The display area (DA) may be rectangular. The surrounding area (PA) may enclose the display area (DA). However, not limited to this, the shape of the display area (DA) and the shape of the surrounding area (PA) may be designed relative to each other. A display area (DA) includes a plurality of pixels (PX1, PX2, PX3 in FIG. 2), and a wiring section (127) including signal lines such as scan lines and data lines and power lines such as driving voltage lines electrically connected to the plurality of pixels (PX1, PX2, PX3 in FIG. 2) is electrically connected to a pad electrode (128). In one embodiment of the present invention, a display device (10) having a planar display surface is illustrated, but is not limited thereto. The display device (10) may include a curved display surface or a three-dimensional display surface. The three-dimensional display surface includes a plur