WINDOW STRUCTURE, METHOD OF MANUFACTURING THE SAME, ELECTRONIC DEVICE EQUIPPED WITH A CAMERA INCLUDING A WINDOW STRUCTURE AND METHOD OF MANUFACTURING THE SAME

• US 20130313672A1
• Filed: 03/12/2013
• Published: 11/28/2013
• Est. Priority Date: 05/23/2012
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Min, Myung-An
• Granted Patent: US 9,640,681 B2
• Time in Patent Office: Days
• US Class Current: 257/434
• CPC Class Codes: G02B 27/0018 with means for preventing ghost images anti-reflection coatings G02B1/11
• CPC Class Codes: G02B 5/003 Light absorbing elements
• CPC Class Codes: G02B 5/005 Diaphragms for cameras G03B9/02
• CPC Class Codes: G02B 5/22 Absorbing filters G02B5/201 - G02B5/208 take precedence
• CPC Class Codes: G03B 11/04 Hoods or caps for eliminating unwanted light from lenses, viewfinders or focusing aids
• CPC Class Codes: G03B 17/02 Bodies
• CPC Class Codes: H01L 31/02164 for shielding light, e.g. light blocking layers, cold shields for infrared detectors
• CPC Class Codes: H01L 31/02165 using interference filters, e.g. multilayer dielectric filters interference filters G02B5/28
• CPC Class Codes: H01L 31/0232 Optical elements or arrangements associated with the device H01L31/0236 takes precedence; for photovoltaic cells H01L31/054; for photovoltaic modules H02S40/20
• CPC Class Codes: H01L 31/18 Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
• CPC Class Codes: H10K 59/60 OLEDs integrated with inorganic light-sensitive elements, e.g. with inorganic solar cells or inorganic photodiodes

Abstract

A window structure includes a window, a design layer structure on the window, a light shield layer on the design layer structure, and a light absorption layer. The design layer structure includes a first hole exposing a portion of the window. The light shield layer includes a second hole in fluid communication with the first hole. The light absorption layer covers at least a portion of the design layer structure exposed by the first and second holes, and includes a third hole exposing a portion of the window. By including the light absorption layer of a gray or black color to cover exposed portions of the design layer structure, a vignette about an image caused by the design layer structure is prevented.

Claims

1. A window structure, comprising:

a window;

a design layer structure arranged on the window, the design layer structure including a first hole exposing a portion of the window;

a light shield layer arranged on the design layer structure, the light shield layer including a second hole in fluid communication with the first hole; and

a light absorption layer covering at least a portion of the design layer structure exposed by the first and second holes, the light absorption layer including a third hole exposing a portion of the window.

2. The window structure of claim 1, wherein the second hole has a diameter larger than that of the first hole.

3. The window structure of claim 1, wherein the first and second holes have substantially a same diameter.

4. The window structure of claim 1, wherein the light absorption layer covers at least a portion of a sidewall of the light shield layer exposed by the second hole.

5. The window structure of claim 4, wherein the light absorption layer covers a portion of a top surface of the light shield layer.

6. The window structure of claim 1, wherein the light absorption layer is absent from a top surface of the light shield layer.

7. The window structure of claim 1, wherein the design layer structure includes a plurality of design layers sequentially stacked on the window.

8. The window structure of claim 7, wherein the first hole has a step shape of which a diameter increases from a bottom portion adjacent to a top surface of the window to a top portion furthest from the top surface of the window.

9. The window structure of claim 7, wherein the first hole has a constant diameter in a direction substantially perpendicular to a top surface of the window.

10. The window structure of claim 9, wherein the first and second holes have substantially the same diameter.

11. The window structure of claim 1, wherein the design layer structure has a chromatic color or a white color, and the light shield layer and the light absorption layer have a black color or a gray color.

12. The window structure of claim 1, wherein each of the design layer structure, the light shield layer and the light absorption layer is a printed layer.

13. The window structure of claim 1, wherein the first, second and third holes have a boundary of a circle when viewed from a top side, and the light absorption layer has a boundary of a circle, ellipse or polygon when viewed from a top side.

14. The window structure of claim 1, wherein the third hole has a sidewall substantially perpendicular to a top surface of the window.

15. The window structure of claim 1, wherein the third hole has a sidewall slanted with respect to a top surface of the window.

16. The window structure of claim 1, wherein the third hole has a curved sidewall.

17. The window structure of claim 1, further comprising a polyethylene terephthalate (PET) film arranged on the window, and wherein the design layer structure is arranged on the PET film.

18. The window structure of claim 1, wherein the third hole serves as a path through which a light incident on a camera sensor facing the light shield layer passes.

19. A method of manufacturing a window structure, comprising:

forming a design layer structure on a window, the design layer structure having a first hole exposing a portion of the window;

forming a light shield layer on the design layer structure, the light shield layer having a second hole in fluid communication with the first hole; and

forming a light absorption layer covering at least a portion of the design layer structure exposed by the first and second holes, the light absorption layer having a third hole exposing a portion of the window.

20. The method of claim 19, wherein the forming of the light shield layer includes forming the light shield layer so that the second hole has a diameter larger than that of the first hole.

21. The method of claim 19, wherein the forming of the light absorption layer includes forming the light absorption layer to cover at least a portion of a sidewall of the light shield layer exposed by the second hole.

22. The method of claim 21, wherein the forming of the light absorption layer includes forming the light absorption layer to cover a portion of a top surface of the light shield layer.

23. The method of claim 19, wherein the forming of the design layer structure includes sequentially stacking a plurality of design layers on the window.

24. The method of claim 23, wherein the forming of the design layer structure includes forming the design layer structure so that the first hole has a step shape of which a diameter increases from a bottom portion adjacent to a top surface of the window to a top portion most distant from the top surface of the window.

25. The method of claim 19, wherein each of the forming the design layer structure, the forming of the light shield layer and the forming of the light absorption layer is produced by a screen printing process using a mesh.

26. A window structure, comprising:

a window;

a design layer structure arranged on the window, the design layer structure including a first hole exposing a portion of the window; and

a light shield layer arranged on the window, the light shield layer covering the design layer structure and including a second hole exposing a portion of the window.

27. The window structure of claim 26, wherein the design layer structure includes a plurality of design layers sequentially stacked on the window.

28. The window structure of claim 27, wherein the first hole has a step shape of which a diameter increases from a bottom portion adjacent to a top surface of the window to a top portion most distant from the top surface of the window.

29. The window structure of claim 27, wherein the design layer structure has a chromatic color or a white color, and the light shield layer has a black color or a gray color.

30. An electronic device, comprising:

a display panel arranged on a substrate;

a window structure arranged on the display panel, the window structure including;

a window;

a design layer structure arranged on the window, the design layer structure including a first hole exposing a portion of the window;

a light shield layer arranged on the design layer structure, the light shield layer including a second hole in fluid communication with the first hole; and

a light absorption layer covering at least a portion of the design layer structure exposed by the first and second holes, the light absorption layer including a third hole exposing a portion of the window; and

a camera including a camera sensor arranged between the window structure and the substrate to detect light passing through the third hole.

31. The device of claim 30, wherein the second hole has a diameter larger than that of the first hole.

32. The device of claim 30, wherein the light absorption layer covers at least a portion of a sidewall of the light shield layer exposed by the second hole.

33. The device of claim 32, wherein the light absorption layer covers a portion of a top surface of the light shield layer.

34. The device of claim 30, wherein the design layer structure includes a plurality of design layers sequentially stacked on the window.

35. The device of claim 34, wherein the first hole has a step shape of which a diameter increases from a bottom portion adjacent to a top surface of the window to a top portion most distant from the top surface of the window.

36. The device of claim 30, wherein the design layer structure has a chromatic color or a white color, and the light shield layer and the light absorption layer have a black color or a gray color.

37. The device of claim 30, wherein the window has first surface facing the substrate and a second surface opposing the first surface, and wherein the design layer structure is arranged on the first surface of the window.

38. The device of claim 30, wherein the display panel is an organic light-emitting diode (OLED) display panel, a liquid crystal display (LCD) panel or a plasma display panel (PDP).

39. A method of manufacturing an electronic device, comprising:

forming a display panel on a substrate;

forming a camera sensor on the substrate, the camera sensor being spaced apart from the display panel;

forming a window structure, including;

providing a window;

forming a design layer structure on the window, the design layer structure having a first hole exposing a portion of the window;

forming a light shield layer on the design layer structure, the light shield layer having a second hole in fluid communication with the first hole; and

forming a light absorption layer covering at least a portion of the design layer structure exposed by the first and second holes, the light absorption layer having a third hole exposing a portion of the window; and

attaching the window structure onto the display panel so that the third hole overlaps the camera sensor and the design layer structure faces the substrate.

40. An electronic device, comprising:

a display panel arranged on a substrate;

a window structure arranged on the display panel, the window structure including;

a window;

a design layer structure arranged on the window, the design layer structure including a first hole exposing a portion of the window; and

a light shield layer arranged on the window, the light shield layer covering the design layer structure and including a second hole exposing a portion of the window; and

a camera including a camera sensor arranged between the window structure and the substrate to detect light passing through the second hole.