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EP-4206757-B1 - COLOR CONVERTER LAYER AND MANUFACTURING METHOD THEREOF

EP4206757B1EP 4206757 B1EP4206757 B1EP 4206757B1EP-4206757-B1

Inventors

  • MUN, Ilju
  • KUK, KEON
  • JUNG, JINWOO

Dates

Publication Date
20260506
Application Date
20220304

Claims (14)

  1. A color converter layer (110) comprising: a first light blocking member (151) in which a plurality of pixel regions (20) comprising a first pixel region (20) and a second pixel region (10-2) are disposed to be spaced apart from each other; a first color converter (120) disposed in the first pixel region (20) and configured to convert incident light into a first color and emit the incident light in the first color; a second color converter (130) disposed in the second pixel region (10-2) and configured to convert the incident light into a second color that is different from the first color, and to emit the incident light in the second color; and a second light blocking member (152, 153) that extends with a preset thickness and is formed on a surface of the first light blocking member (151), and is configured to block transmission of the incident light into an adjacent pixel region (20) by partitioning the first pixel region (20) and the second pixel region (10-2), wherein the preset thickness of the second light blocking member (152, 153) is greater than the thickness of the first light blocking member (151), characterized in that at least a part of an area of a surface (157a, 159a) of the second light blocking member (152, 153) that is parallel to the one surface of the first light blocking member (151) is ink-phobic.
  2. The color converter layer (110) of claim 1, wherein the plurality of pixel regions (20) comprise a plurality of first pixel regions (20) being arranged in a column direction in a matrix structure, and a second pixel region (10-2) being arranged in a column direction adjacent to a row direction of the plurality of first pixel regions (20).
  3. The color converter layer (110) of claim 2, wherein the second light blocking member (152, 153) comprises: a first region (175) configured to partition the plurality of pixel regions (20) in a column direction of the matrix structure; and a second region configured to partition the plurality of pixel regions (20) in a row direction of the matrix structure, wherein the first region (175) has the preset thickness.
  4. The color converter layer (110) of claim 3, wherein a second region of the second light blocking member (152, 153) has a thickness less than or equal to the preset thickness of the first region (175).
  5. The color converter layer (110) of claim 3, wherein the first region (175) of the second light blocking member (152, 153) has an area less than or equal to a facing area of the first light blocking member (151).
  6. The color converter layer (110) of claim 3, wherein the second region of the second light blocking member (152, 153) has an area less than or equal to a facing area of the first light blocking member (151).
  7. The color converter layer (110) of claim 1, comprising: an intermediate layer (156) provided between the first light blocking member (151) and the second light blocking member (152, 153), wherein the intermediate layer (156) has a thickness less than or equal to the preset thickness of the second light blocking member (152, 153).
  8. The color converter layer (110) of claim 7, wherein the intermediate layer (156) has an area less than or equal to an area of a facing region of the first light blocking member (151), and wherein the second light blocking member (152, 153) has an area less than or equal to an area of a facing region of the intermediate layer (156).
  9. The color converter layer (110) of claim 7, wherein the intermediate layer (156) is formed of a plurality of layers (117).
  10. The color converter layer (110) of claim 1, wherein the second light blocking member (152, 153) is disposed to be spaced apart from the one surface of the first light blocking member (151), and wherein the second light blocking member (152, 153) comprises an adhesive layer (117) filling between the first light blocking member (151) and the second light blocking member (152, 153).
  11. The color converter layer (110) of claim 1, further comprising: an optical resin (167) disposed on the first pixel region (20) partitioned by the second light blocking member (152, 153) and at least a part is curved in a direction of the first light blocking member (151).
  12. The color converter layer (110) of claim 1, wherein the first light blocking member (151) comprises: a third pixel region (10-3) disposed to be spaced apart from the first pixel region (20) and the second pixel region (10-2); and a transmission layer (140) disposed on the third pixel region (10-3) to transmit the incident light.
  13. A method of manufacturing a color converter layer (110), the method comprising: patterning and forming, on a substrate, a first light blocking member (151) that defines a plurality of pixel regions (20) in a matrix format; patterning and forming a second light blocking member (152, 153) that extends with a preset thickness greater than a thickness of the first light blocking member (151) on a surface of the first light blocking member (151) and partitions a column direction of the plurality of pixel regions (20), wherein at least a part of an area of a surface (157a, 159a) of the second light blocking member (152, 153) that is parallel to the one surface of the first light blocking member (151) is ink-phobic; applying a first color converter (120) that converts incident light into a first color between the second light blocking members (153) in a column direction of the plurality of pixel regions (20); and applying a second color converter (130) that converts the incident light into a second color that is different from the first color to be adjacent with the first color converter (120), in a column direction of the plurality of pixel regions (20).
  14. The method of claim 13, wherein the applying of the first color converter (120) comprises controlling an electronic field of a dispenser nozzle (50) and applying the first color converter (120) in a dispensing manner.

Description

Technical Field The disclosure relates to a color converter layer and a manufacturing method thereof and, more particularly to, a color converter layer including a light-blocking member and a manufacturing method thereof. Background Art A color converter layer is a component of a display apparatus and is also referred to as a color film or a color filter, and a display apparatus displays a color image through a method in which incident light emitted from a light source of the display apparatus passes through the color converter layer and is converted to one of red, green, or blue colors, and implements a pixel. Research and development has been performed on a display apparatus with improved brightness, resolution, and color expression of a display screen according to the advancement of technology, and there is a technical need for a color converter layer structure capable of realizing a clear color by preventing a light leakage to an adjacent sub-pixel and improving a color gamut and a contrast ratio, and a method for manufacturing the same. US 2020/089047 Al describes a color filter includes a substrate including pixel areas and a light-shielding area which is disposed between adjacent pixels areas; and a color conversion layer which color-converts incident light of an incident color and emits color-converted light toward the substrate, the color conversion layer including a first color conversion pattern in a first pixel area among the pixel areas and with which the incident light of the incident color is converted into light of a first color; and a second color conversion pattern in a second pixel area among the pixel areas and with which the incident light of the incident color is converted into light of a second color; and a partition wall in the light-shielding area and between the first color conversion pattern and the second color conversion pattern, the partition wall including a light-scattering material which scatters light incident thereto. WO 2020/085606 Al describes a color filter comprising: a substrate having a plurality of pixel regions and a light shielding region surrounding the pixel regions; a light shielding layer disposed on the light shielding region; a first color conversion layer disposed on a first pixel region among the pixel regions and for converting incident light into light in a first color; a first color filter layer disposed between the substrate and the first color conversion layer and for selectively transmitting the light in the first color emitted from the first color conversion layer; and a light reflecting layer interposed between the first color conversion layer and first color filter layer and comprising a reflective material. Disclosure of Invention Technical Problem In the related-art color converter layer, as the incident light passes through a color conversion unit, the amount of light is reduced, light efficiency is lowered, and brightness improvement has limitation and thus, configuring a color converter layer based on quantum dot enhancement film (QDEF) using quantum dot (QD) light emission is used. The thickness of the color converter layer is defined by a black matrix made of a light blocking member, but there is a problem in securing the thickness of the color converter layer due to an implementation limit of the thickness of the black matrix, and there is a problem in that light leakage phenomenon between adjacent pixel regions may occur by a space formed between a plurality of light sources and the color converter layer. Accordingly, it is an object of the present invention to provide a color converter layer and a manufacturing method thereof to secure thickness through a light blocking member and prevent light leakage phenomenon. Solution to Problem The object is solved by the subject-matter of the independent claims, wherein further embodiments are set out in the dependent claims. In accordance with an aspect of the disclosure, a color converter layer is provided. The color converter layer includes a first light blocking member in which a plurality of pixel regions comprising a first pixel region and a second pixel region are disposed to be spaced apart from each other, a first color converter disposed in the first pixel region and configured to convert incident light into a first color and emit the incident light in the first color, a second color converter disposed in the second pixel region and configured to convert the incident light into a second color that is different from the first color, and to emit the incident light in the second color, and a second light blocking member that extends with a preset thickness and is formed on a surface of the first light blocking member, and is configured to block transmission of the incident light into an adjacent pixel region by partitioning the first pixel region and the second pixel region, wherein the preset thickness of the second light blocking member is greater than the thickness of the first light blo