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KR-102963905-B1 - Display apparatus and manufacturing the same

KR102963905B1KR 102963905 B1KR102963905 B1KR 102963905B1KR-102963905-B1

Abstract

The present invention provides a display device and a method for manufacturing the same, wherein the display quality is improved by minimizing the non-display area of the display device, the display device comprises: a substrate; a pixel circuit layer located on the substrate and including a thin-film transistor; a display element layer located on the pixel circuit layer and including a display element electrically connected to the thin-film transistor; a color filter layer located on the display element layer and including a color filter that overlaps with the display element, wherein one side of the color filter is in contact with the other side and extends in the edge direction of the substrate; and a blocking layer interposed between the black matrix and the substrate, wherein there is no step difference between the end of the black matrix and the end of the blocking layer.

Inventors

  • 임태우
  • 구본용
  • 김형준
  • 장은제
  • 주장복

Assignees

  • 삼성디스플레이 주식회사

Dates

Publication Date
20260513
Application Date
20200917

Claims (20)

  1. Substrate; A pixel circuit layer located on the above substrate and comprising a thin-film transistor; A display element layer comprising a display element located on the pixel circuit layer and electrically connected to the thin-film transistor; A color filter layer comprising a color filter located on the display element layer and overlapping with the display element, and a black matrix having one side in contact with the color filter and the other side extending in the edge direction of the substrate; and A blocking layer interposed between the black matrix and the substrate; Equipped with, There is no step difference between the end of the black matrix and the end of the blocking layer, and A display device in which the thermal conductivity of the above-mentioned blocking layer is greater than the thermal conductivity of the above-mentioned black matrix.
  2. In paragraph 1, A lower metal layer interposed between the semiconductor layer of the thin-film transistor and the substrate; further comprising A display device in which the blocking layer comprises the same material as the lower metal layer.
  3. In paragraph 1, A display device comprising the same material as the gate electrode or source electrode of the thin-film transistor, wherein the blocking layer is the same material.
  4. In paragraph 1, A display device comprising a blocking layer, the blocking layer comprising a first layer and a second layer located on the first layer.
  5. In paragraph 4, A lower metal layer interposed between the semiconductor layer of the thin-film transistor and the substrate; further comprising The first layer above comprises the same material as the lower metal layer, and A display device in which the second layer comprises the same material as the gate electrode or source electrode of the thin-film transistor.
  6. In paragraph 4, The first layer above comprises the same material as the gate electrode of the thin-film transistor, and A display device in which the second layer comprises the same material as the source electrode of the thin-film transistor.
  7. In paragraph 4, A display device in which the upper surface of the first layer is in contact with the lower surface of the second layer.
  8. In paragraph 4, At least one insulating layer is interposed between the first layer and the second layer, and A display device having at least one contact hole formed in the above-mentioned insulating layer connecting the first layer and the second layer.
  9. In paragraph 1, The blocking layer extends along at least one edge of the substrate, and A display device in which the end of the blocking layer has no step difference with the at least one edge of the substrate.
  10. delete
  11. In paragraph 1, A display device further comprising a quantum dot layer located below the color filter layer.
  12. A step of forming a lower metal layer on a substrate, forming a pixel circuit layer including a thin-film transistor having a semiconductor layer overlapping with the lower metal layer, and forming a blocking layer; A step of forming a display element layer on the pixel circuit layer comprising a display element electrically connected to the thin-film transistor; A step of forming a color filter layer on the display element layer, the color filter layer comprising a color filter superimposed on the display element, wherein one side of the color filter is in contact with the color filter and the other side extends in the edge direction of the substrate; and A step of cutting the substrate and the black matrix based on the other end of the blocking layer; Includes, A method for manufacturing a display device in which the thermal conductivity of the above-mentioned blocking layer is greater than the thermal conductivity of the above-mentioned black matrix.
  13. In Paragraph 12, A method for manufacturing a display device, wherein the blocking layer is formed simultaneously with the lower metal layer and includes the same material as the lower metal layer.
  14. In Paragraph 12, A method for manufacturing a display device, wherein the blocking layer is formed simultaneously with the gate electrode or source electrode of the thin-film transistor and comprises the same material as the gate electrode or the source electrode.
  15. In Paragraph 12, The step of forming the above blocking layer is, Step of forming a first layer; and A step of forming a second layer on the first layer; A method for manufacturing a display device comprising
  16. In paragraph 15, The first layer is formed simultaneously with the lower metal layer and includes the same material as the lower metal layer, A method for manufacturing a display device wherein the second layer is formed simultaneously with the gate electrode or source electrode of the thin-film transistor and comprises the same material as the gate electrode or the source electrode.
  17. In paragraph 15, A method for manufacturing a display device in which the upper surface of the first layer contacts the lower surface of the second layer.
  18. In paragraph 15, At least one insulating layer is interposed between the first layer and the second layer, and A method for manufacturing a display device, wherein at least one contact hole connecting the first layer and the second layer is formed in the above-mentioned at least one insulating layer.
  19. delete
  20. In Paragraph 12, A method for manufacturing a display device, further comprising the step of forming a quantum dot layer below the color filter layer.

Description

Display apparatus and manufacturing the same Embodiments of the present invention relate to a display device and a method for manufacturing the same, and more specifically, to a display device and a method for manufacturing the same in which the display quality is improved by minimizing the area of the non-display area of the display device. A display device is a device that visually displays data. Display devices are used as display units for small products such as mobile phones, as well as for large products such as televisions. Recently, as the applications of display devices have diversified, various design attempts are being made to improve their quality. In particular, as display devices become larger, research aimed at minimizing the non-display area is actively underway. Meanwhile, considering the efficiency of the manufacturing process, the display device can be manufactured through a manufacturing method that includes forming multiple display panels in cell area units on a mother substrate and a cutting process that divides them by cell area. FIG. 1 is a plan view schematically illustrating a part of a mother substrate according to one embodiment of the present invention. FIG. 2 is a plan view schematically illustrating a part of a display device according to one embodiment of the present invention. FIG. 3 is an equivalent circuit diagram schematically illustrating one pixel of a display device according to one embodiment of the present invention. FIG. 4 is a cross-sectional view schematically illustrating a part of a display device according to one embodiment of the present invention. FIGS. 5A and FIGS. 5B are cross-sectional views sequentially illustrating a part of a cutting process according to one embodiment of the present invention. FIG. 6 is a plan view schematically illustrating a part of a display device according to one embodiment of the present invention. FIG. 7 is a cross-sectional view schematically illustrating a blocking layer according to one embodiment of the present invention. FIG. 8 is a cross-sectional view schematically illustrating a blocking layer according to another embodiment of the present invention. FIG. 9 is a cross-sectional view schematically illustrating a blocking layer according to another embodiment of the present invention. FIG. 10 is a cross-sectional view schematically illustrating a blocking layer according to another embodiment of the present invention. FIG. 11 is a cross-sectional view schematically illustrating a blocking layer according to another embodiment of the present invention. FIG. 12 is a cross-sectional view schematically illustrating a blocking layer according to another embodiment of the present invention. FIG. 13 is a cross-sectional view schematically illustrating a blocking layer according to another embodiment 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. Hereinafter, 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. 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 film, region, 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 film, region, or component is interposed in between. In the drawings, the size of components may be exaggerated or reduced for convenience of explanation. For example, the size and thickness of each component shown in the drawings are depicted arbitrarily for convenience of explanation, so the present invention is not necessarily limited to what is illustrated. Where an embodiment can be implemented differently, a specific process sequence may be performed differently from the order described. For example, two processes described consecutively may be performed substa