Digitizer and display apparatus including the same

Patent metadata

Field	Value
Publication number	US-12326754-B2
Application number	US-202117173672-A
Country	US
Kind code	B2
Filing date	Feb 11, 2021
Priority date	Jul 10, 2020
Publication date	Jun 10, 2025
Grant date	Jun 10, 2025

Abstract

A digitizer and a display apparatus including the same are provided. The digitizer includes a base layer in which a metal pattern is disposed, and a blocking layer disposed on the base layer.

First claim

What is claimed is:

1. A digitizer comprising:
a base layer made of an electrically insulative material in which a metal pattern is disposed; and
a blocking layer spaced apart from the metal pattern and disposed on the base layer, the blocking layer to block light so as to prevent the metal pattern from being viewed through a display panel, wherein
a top surface of the base layer on which the blocking layer is disposed is uneven corresponding to a thickness and arrangement of the metal pattern, the top surface being a main surface of the base layer facing toward the blocking layer, and
the blocking layer includes a surface facing the base layer that is uneven corresponding to the thickness and arrangement of the metal pattern in the base layer.

2. The digitizer of claim 1 , wherein the blocking layer is black and uniformly arranged so as to have no holes.

3. The digitizer of claim 1 , further comprising a base planarization layer disposed between the blocking layer and the base layer.

4. The digitizer of claim 1 , wherein the blocking layer and the base layer are integral with each other.

5. The digitizer of claim 1 , wherein the base layer includes:
a body layer; and
a pattern layer disposed on the body layer.

6. The digitizer of claim 1 , wherein a side of the blocking layer is substantially flat.

7. The digitizer of claim 1 , further comprising a heat-dissipating plate extended to the base layer.

8. The digitizer of claim 7 , wherein the heat-dissipating plate is bendable.

9. A display apparatus comprising:
a display panel including:
a first surface on which a display area is disposed; and
a second surface; and
a digitizer disposed on the second surface of the display panel, wherein the digitizer includes:
a base layer made of an electrically insulative material in which a metal pattern is disposed; and
a blocking layer spaced apart from the metal pattern and disposed on the base layer to block light so as to prevent any underlying pattern from being viewed through a display panel, the blocking layer facing the second surface, wherein
a top surface of the base layer on which the blocking layer is disposed is uneven corresponding to a thickness and arrangement of the metal pattern, the top surface being a main surface of the base layer facing toward the blocking layer, and
the blocking layer includes a surface facing the base layer that is uneven corresponding to the thickness and arrangement of the metal pattern in the base layer.

10. The display apparatus of claim 9 , wherein the blocking layer includes at least one of polyimide and a black filler.

11. The display apparatus of claim 9 , wherein the digitizer includes a base planarization layer disposed between the base layer and the blocking layer.

12. The display apparatus of claim 9 , wherein the base layer includes:
a body layer; and
a pattern layer disposed on the body layer, the blocking layer being disposed on the pattern layer.

13. The display apparatus of claim 12 , wherein the base layer includes an adhesive layer disposed between the pattern layer and the blocking layer.

14. The display apparatus of claim 9 , further comprising an optical functional layer disposed on the first surface.

15. The display apparatus of claim 9 , further comprising a heat-dissipating plate extended to the digitizer.

16. The display apparatus of claim 15 , wherein the heat-dissipating plate is bendable.

17. The display apparatus of claim 15 , wherein the heat-dissipating plate includes:
a first heat-dissipating plate extended to the digitizer; and
a second heat-dissipating plate extended to the first heat-dissipating plate.

18. The display apparatus of claim 9 , wherein the display panel is flexible.

19. The display apparatus of claim 9 , wherein a side of the digitizer facing the second surface is substantially flat.

20. A display apparatus comprising:
a display panel to display an image, the display panel including:
a substrate having a first surface on which a display area is disposed and from which the image is viewable by a user and a second surface opposite the first surface; and
a display layer on the first surface;
a panel protecting member disposed on the second surface; and
a digitizer disposed on a surface of the panel protecting member facing away from the display panel and including a base layer made of an electrically insulative material and having an uneven top surface facing the second surface, a contour of the uneven top surface corresponding to a thickness and arrangement of a metal pattern disposed in the base layer, wherein
the blocking layer includes a surface facing the base layer that is uneven corresponding to the thickness and arrangement of the metal pattern in the base layer.

21. The display apparatus of claim 20 , further comprising an optical functional layer disposed on the first surface.

22. The display apparatus of claim 20 , further comprising a cover member disposed on the first surface.

23. The display apparatus of claim 20 , wherein the digitizer includes:
a base layer; and
a blocking layer disposed on the base layer and facing the second surface, the blocking layer to block light so as to prevent the metal pattern from being viewed through the display panel, wherein
the blocking layer is spaced apart from the metal pattern.

24. The display apparatus of claim 23 , wherein the blocking layer includes at least one of polyimide and a black filler.

25. The display apparatus of claim 23 , wherein the digitizer includes a base planarization layer disposed between the base layer and the blocking layer.

26. The display apparatus of claim 23 , wherein the base layer includes:
a body layer; and
a pattern layer disposed on the body layer, the blocking layer being disposed on the pattern layer to prevent the pattern layer from being viewed through a display panel.

27. The display apparatus of claim 26 , wherein the base layer includes an adhesive layer disposed between the pattern layer and the blocking layer.

28. The display apparatus of claim 26 , further comprising a heat-dissipating plate extended to the digitizer.

29. The display apparatus of claim 28 , wherein the heat-dissipating plate is bendable.

30. The display apparatus of claim 28 , wherein the heat-dissipating plate includes:
a first heat-dissipating plate extended to the digitizer; and
a second heat-dissipating plate extended to the first heat-dissipating plate.

31. The display apparatus of claim 23 , wherein the display panel is flexible.

32. The display apparatus of claim 23 , wherein one side of the digitizer facing the second surface is substantially flat.

33. The display apparatus of claim 1 , wherein the metal pattern is used as part of a resistive or a capacitive digitizer.

34. The display apparatus of claim 1 , wherein the blocking layer is disposed between the metal pattern and the display panel.

Assignees

• Samsung Display Co Ltd

Inventors

• Shin Jaiku
• Park Dongjin
• Seo Dongwoo
• Choi Sungchul

Classifications

• H10K59/131

  Interconnections, e.g. wiring lines or terminals · CPC title

• H10K59/8794

  Arrangements for heating and cooling · CPC title

• H10K59/8791

  Arrangements for improving contrast, e.g. preventing reflection of ambient light · CPC title

• H10K59/875

  Arrangements for extracting light from the devices · CPC title

• H10K2102/311

  Flexible OLED · CPC title