Display device and vehicle having the same

Patent metadata

Field	Value
Publication number	US-10514790-B2
Application number	US-201515504413-A
Country	US
Kind code	B2
Filing date	Dec 4, 2015
Priority date	Dec 1, 2015
Publication date	Dec 24, 2019
Grant date	Dec 24, 2019

Abstract

A display device including a touch window including an active area and an unactive area around the unactive area; a display unit disposed under the touch window; a bezel frame configured to support the display unit; and a light sensor unit disposed on a side of the bezel frame and at an angle to a top surface of the touch window under the unactive area of the touch window and including at least one light output unit configured to output light and at least one light receiving unit configured to receive light reflected from an input tool.

First claim

The invention claimed is:

1. A display device comprising:
a touch window including an active area and an unactive area around the active area;
a display unit disposed under the active area;
a bezel frame configured to support the display unit; and
a light sensor unit disposed on a side of the bezel frame and at an angle to a top surface of the touch window under the unactive area of the touch window and including at least one light output unit configured to output light and at least one light receiving unit configured to receive light reflected from an input tool,
wherein the light sensor unit further comprises a lens spreading light output from the at least one light output unit or collecting light reflected from the input tool into the at least one light receiving unit,
wherein the lens comprises:
an external surface facing the unactive area and being parallel to the top surface of the touch window; and
an internal surface facing the at least one light output unit and the at least one light receiving unit and having a concave shape,
wherein at least a part of the internal surface becomes closer to the external surface as the distance from the display unit increases, and
wherein the light sensor unit is at the angle to have a light output surface of the at least one light output unit face an upper portion of the active area.

2. The display device according to claim 1 , wherein the unactive area is disposed on all sides of the active area, and
wherein the light sensor unit is disposed under at least one side of the unactive area.

3. The display device according to claim 2 , wherein the active area is a breadthwise active area that is longer in a horizontal direction than in a vertical direction and a lateral direction corresponds to the horizontal direction, and
wherein the light sensor unit comprises a first light sensor unit disposed under a left unactive area and a second light sensor unit disposed under a right unactive area.

4. The display device according to claim 2 , wherein the active area is a breadthwise active area that is longer in a horizontal direction than in a vertical direction, a lateral direction corresponds to the horizontal direction and a longitudinal direction corresponds to the vertical direction, and
wherein the light sensor unit comprises a first light sensor unit disposed under an upper unactive area and a second light sensor unit disposed under a lower unactive area.

5. The display device according to claim 1 , further comprising:
a printed layer disposed on the unactive area and including a first hole in an area that overlaps the at least one light output unit and the at least one light receiving unit.

6. The display device according to claim 5 , wherein the light sensor unit further comprises a light sensor substrate supporting the at least one light receiving unit, and a noise reducing frame disposed on the light sensor substrate.

7. The display device according to claim 6 , wherein the noise reducing frame comprises a second hole in an area that overlaps the at least one light output unit and the at least one light receiving unit, and
wherein the lens is disposed at the second hole.

8. The display device according to claim 7 , wherein the noise reducing frame and the light sensor substrate form a square pillar shape and the lens covers the second hole of the noise reducing frame, and
wherein the at least one light output unit and the at least one light receiving unit are surrounded by the noise reducing frame, the light sensor substrate and the lens.

9. The display device according to claim 8 , further comprising:
air gaps formed between the at least one light output unit and the lens and between the at least one light receiving unit and the lens.

10. The display device according to claim 6 , further comprising:
a front casing supporting the noise reducing frame and the touch window,
wherein the front casing comprises a bumper portion disposed around the noise reducing frame.

11. The display device according to claim 1 , wherein the light sensor unit further comprises a light sensor substrate supporting the at least one light output unit and the at least one light receiving unit.

12. The display device according to claim 11 , wherein the bezel frame has a space under the unactive area,
wherein the light sensor unit is disposed in the space, and
wherein the bezel frame comprises a hole on an area that overlaps the at least one light output unit and the at least one light receiving unit.

13. The display device according to claim 12 , wherein the lens is disposed at the hole of the bezel frame.

14. The display device according to claim 13 , wherein the bezel frame and the light sensor substrate form a space under the unactive area, and
wherein the at least one light output unit and the at least one light receiving unit are surrounded by the bezel frame, the light sensor substrate and the lens.

15. The display device according to claim 14 , wherein the bezel frame further comprises a sidewall disposed between the light sensor unit and the display unit.

16. The display device according to claim 1 , wherein light that the at least one light output unit outputs is infrared light.

17. A vehicle comprising the display device according to claim 1 .

18. The vehicle according to claim 1 , wherein the unactive area is disposed on all sides of the active area.

Assignees

• Lg Electronics Inc

Inventors

• Kim Eugene
• Joung Munchae
• Kim Dongkuk
• Kim Sunuk
• Kim Hwan

Classifications

• G06F3/044

  by capacitive means · CPC title

• G06F3/0488

  using a touch-screen or digitiser, e.g. input of commands through traced gestures · CPC title

• G01N21/35

  using infrared light (G01N21/39 takes precedence) · CPC title

• G06F2203/04101

  2.5D-digitiser, i.e. digitiser detecting the X/Y position of the input means, finger or stylus, also when it does not touch, but is proximate to the digitiser's interaction surface and also measures the distance of the input means within a short range in the Z direction, possibly with a separate measurement setup · CPC title

• G06F2203/04106

  Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection · CPC title