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KR-102961003-B1 - DISPLAY DEVICE AND MANUFACTURING METHOD FOR THE SAME

KR102961003B1KR 102961003 B1KR102961003 B1KR 102961003B1KR-102961003-B1

Abstract

Embodiments of the present disclosure relate to a display device and a method for manufacturing the same, and more specifically, the display device and a method for manufacturing the same can be provided by including a substrate, a pixel area comprising two or more subpixels on the substrate, a first subpixel area in which a color filter is located among the pixel areas, a second subpixel area adjacent to the first subpixel area, a first overcoat layer located in the first subpixel area and a second overcoat layer located in the second subpixel area, and a first bank layer located at the boundary line of the first subpixel area and a second bank layer located at the boundary line of the second subpixel area, wherein the first bank layer and the second overcoat layer include an overlapping portion that overlaps on the color filter.

Inventors

  • 최정현

Assignees

  • 엘지디스플레이 주식회사

Dates

Publication Date
20260507
Application Date
20211227

Claims (14)

  1. Substrate; A pixel region comprising two or more subpixels on the above substrate; A first sub-pixel area among the above pixel areas where a color filter is located; A second sub-pixel area adjacent to the first sub-pixel area above; A first overcoat layer located in the first subpixel area and a second overcoat layer located in the second subpixel area, which are separated between the first subpixel area and the second subpixel area; and It includes a first bank layer located at the boundary line of the first sub-pixel region and a second bank layer located at the boundary line of the second sub-pixel region; The above-mentioned first bank layer and the above-mentioned second overcoat layer include an overlapping portion that overlaps on the color filter, and The area where the first overcoat layer and the second overcoat layer are separated is a display device located in the first bank layer.
  2. In Article 1, A display device in which the first bank layer and the second overcoat layer contact at the above-mentioned overlap portion.
  3. delete
  4. In Paragraph 1, The boundary line of the first bank layer and the second bank layer is a display device located on the second overcoat layer.
  5. In Article 1, A display device in which the first subpixel area is one of a red, blue, and green subpixel area.
  6. In Article 1, A display device in which the above-mentioned second sub-pixel area is a white sub-pixel area.
  7. In Article 1, A display device comprising a light-blocking member on the above-mentioned color filter.
  8. In Article 7, The above light-blocking member is a display device including a first electrode.
  9. In Article 7, The above color filter is a display device that isolates the first overcoat layer and the second overcoat layer.
  10. In Article 9, The light-blocking member is a display device located in an area where the color filter is disconnected.
  11. A step of forming a color filter in a sub-pixel area constituting a pixel area on a substrate; A step of forming an overcoat layer on the color filter so as to be cut off at the boundary of the sub-pixel area; A step of forming a first electrode on the overcoat layer; A step of forming a bank layer on the boundary line of the overcoat layer; The method includes the step of forming a light-emitting layer on the bank layer and the overcoat layer; The step of forming the bank layer above is, The method includes the step of forming an overlapping portion in which a first bank layer of a first sub-pixel region and a second overcoat layer of a second sub-pixel region overlap on the color filter. A method for manufacturing a display device in which the area of the above-mentioned overcoat layer is disconnected is located in the above-mentioned first bank layer.
  12. In Article 11, The step of forming the above-mentioned overcoat layer is, A method for manufacturing a display device comprising the step of forming the outer edge of the substrate by reducing the spacing of the overcoat slit mask or the halftone transmittance in the outward direction.
  13. In Article 11, The step of forming the above-mentioned overcoat layer is, A method for manufacturing a display device comprising the step of etching the color filter so that it is disconnected in the area where the overcoat layer is disconnected.
  14. In Article 11, The step of forming the first electrode is, A method for manufacturing a display device comprising the step of etching and patterning the material of the first electrode so that a light-blocking member is positioned in the area where the overcoat layer is disconnected.

Description

Display device and manufacturing method for the same The embodiments of the present disclosure relate to a display device and a method for manufacturing the same. As the information society develops, the demand for display devices to display images is increasing in various forms, and recently, a variety of display devices such as Liquid Crystal Displays (LCDs), Plasma Display Panels (PDPs), and Organic Light Emitting Display Devices (OLEDs) are being utilized. These various display devices include corresponding display panels. Meanwhile, multiple pixels are located on the display panel, and these pixels can be further divided into red, green, blue, and white subpixels. To implement color, color filters can be used to restrict specific light wavelengths or shift the light wavelength bands for each subpixel. Furthermore, each subpixel emits light, and depending on whether or not they emit light, light leakage in two or more colors may occur, potentially degrading the viewing angle. Therefore, technology is required to block light leakage from non-emitting subpixels. FIG. 1 is a system configuration diagram of a display device according to embodiments of the present disclosure. FIG. 2 is a schematic plan view of a display panel according to embodiments of the present disclosure. Figures 3a and 3b are drawings showing moisture permeability and dark spot defects within the display panel and pixels. FIGS. 4a and 4b are drawings to explain contact failure between the light-emitting layer and the color filter occurring between subpixels. Figure 5 is a cross-sectional view of the line B-B' in Figure 2. FIG. 6 is a schematic diagram for a compensation design of an overcoat layer slit according to embodiments of the present disclosure. FIG. 7 is a cross-sectional view of B-B' in FIG. 2 showing another example of a display device according to embodiments of the present disclosure. FIGS. 8a to 8j are drawings showing a process of forming a light-blocking member on a color filter according to embodiments of the present disclosure. Hereinafter, some embodiments of the present invention will be described in detail with reference to the exemplary drawings. In assigning reference numerals to the components of each drawing, the same components may have the same reference numeral as much as possible, even if they are shown in different drawings. Furthermore, in describing the present invention, if it is determined that a detailed description of related known components or functions could obscure the essence of the present invention, such detailed description may be omitted. Where terms such as "includes," "has," "consists of," etc. are used in this specification, other parts may be added unless "only" is used. Where a component is expressed in the singular, it may include a plural unless there is a special explicit description. Additionally, terms such as first, second, A, B, (a), (b), etc., may be used when describing the components of the present invention. These terms are used merely to distinguish the components from other components, and the essence, order, sequence, or number of the components are not limited by such terms. In describing the positional relationship of components, where it is stated that two or more components are "connected," "combined," or "joined," it should be understood that while the two or more components may be directly "connected," "combined," or "joined," they may also be "connected," "combined," or "joined" with other components "intervened." Here, the other components may be included in one or more of the two or more components that are "connected," "combined," or "joined" with one another. In describing the temporal flow relationship regarding components, methods of operation, or methods of production, for example, when the temporal or sequential relationship is described using "after," "following," "next," or "before," it may include cases where the relationship is not continuous unless "immediately" or "directly" is used. Meanwhile, where numerical values or corresponding information regarding a component (e.g., levels, etc.) are mentioned, even without separate explicit notation, the numerical values or corresponding information may be interpreted as including a range of error that may occur due to various factors (e.g., process factors, internal or external shocks, noise, etc.). Hereinafter, various embodiments of the present disclosure will be described in detail with reference to the attached drawings. FIG. 1 is a schematic system configuration diagram of a display device according to embodiments of the present disclosure, and FIG. 2 is a plan view illustrating a pixel structure arranged on a display panel of a display device according to embodiments of the present disclosure. Referring to FIG. 1, a display device (100) according to embodiments of the present disclosure may include a display panel (110) and a driving circuit for driving the display panel (110). The driving circuit may i