Liquid crystal display device incorporating capacitve touch keys to maximize user convenience

Patent metadata

Field	Value
Publication number	US-9766760-B2
Application number	US-201514596794-A
Country	US
Kind code	B2
Filing date	Jan 14, 2015
Priority date	Mar 3, 2014
Publication date	Sep 19, 2017
Grant date	Sep 19, 2017

Abstract

A liquid crystal display device includes a backlight assembly, a liquid crystal display panel, a capacitive type touch function key, a cover film and a receiving container. The backlight assembly is configured to generate light. The liquid crystal display panel is disposed on the backlight assembly. The liquid crystal display panel includes an array substrate and an opposing substrate facing the array substrate. The capacitive type touch function key is disposed adjacent to a side surface of one of the array substrate and the opposing substrate. The cover film overlaps the liquid crystal display panel and the capacitive type touch function key. The receiving container receives the backlight assembly, the liquid crystal display panel and the capacitive type touch function key.

First claim

What is claimed is:

1. A liquid crystal display device, comprising:
a backlight assembly configured to generate light;
a liquid crystal display panel disposed on the backlight assembly, the liquid crystal display panel comprising an array substrate having a surface and an opposing substrate having a surface that faces the surface of the array substrate;
a capacitive type touch function key disposed on a side surface of one of the array substrate and the opposing substrate, the side surface of said one of the array substrate and the opposing substrate being perpendicular to the surface of the array substrate and to the surface of the opposing substrate;
a cover film overlapping the liquid crystal display panel and the capacitive type touch function key; and
a receiving container receiving the backlight assembly, the liquid crystal display panel and the capacitive type touch function key.

2. The liquid crystal display device of claim 1 , wherein a width of the array substrate is greater than a width of the opposing substrate along a first direction.

3. The liquid crystal display device of claim 1 , wherein the capacitive type touch function key is configured to adjust one of brightness, chrominance and contrast of an image displayed on the liquid crystal display panel.

4. The liquid crystal display device of claim 1 , wherein the cover film comprises a flat surface.

5. The liquid crystal display device of claim 1 , wherein the cover film comprises a light transmitting area, through which light from the liquid crystal display panel transmits, and a printing area disposed next to the light transmitting area, the liquid crystal display device including a printing member disposed on the printing area.

6. The liquid crystal display device of claim 5 , wherein the printing area overlaps the capacitive type touch function key.

7. The liquid crystal display device of claim 6 , wherein a width of the printing area is greater than a width of the capacitive type touch function key.

8. The liquid crystal display device of claim 5 , wherein the printing area comprises:
a first printing area having a first color; and
a second printing area having a second color different from the first color.

9. The liquid crystal display device of claim 8 , wherein the capacitive type touch function key overlaps the first printing area.

10. The liquid crystal display device of claim 1 , further comprising:
a first polarizing film disposed on the array substrate; and
a second polarizing film disposed on the opposing substrate.

11. The liquid crystal display device of claim 10 , further comprising an adhesive member to attach the first polarizing film with the cover film.

12. The liquid crystal display device of claim 10 , wherein a thickness of the capacitive type touch function key is equal to or less than a sum of a thickness of the opposing substrate and a thickness of the second polarizing film.

13. The liquid crystal display device of claim 1 , further comprising a spacer overlapping a portion of the array substrate,
wherein the capacitive type touch function key is attached to the spacer.

14. The liquid crystal display device of claim 13 , wherein a thickness of the spacer is substantially equal to a sum of a thickness of the opposing substrate and a thickness of the second polarizing film.

15. The liquid crystal display device of claim 1 , wherein the array substrate is disposed between the backlight assembly and the opposing substrate.

16. The liquid crystal display device of claim 1 , wherein the capacitive type touch function key is disposed on the array substrate.

17. The liquid crystal display device of claim 1 , wherein the opposing substrate is disposed between the backlight assembly and the array substrate.

18. The liquid crystal display device of claim 1 , wherein the receiving container comprises:
a mold frame receiving the backlight assembly and partially supporting a rear surface of the liquid crystal display panel; and
a bottom chassis receiving the liquid crystal display panel, the capacitive type touch function key and the mold frame.

19. The liquid crystal display device of claim 18 , wherein the cover film comprises:
a flat surface portion overlapping the liquid crystal display panel and the capacitive type touch function key; and
a curved surface portion connected to the flat surface portion and surrounding a portion of the bottom chassis.

Assignees

• Samsung Display Co Ltd

Inventors

• Jeon Jae-Hwan
• Kim Jeong-Young
• Kaplan Len
• Park Sung-Dong
• Lee Sang-Hwan
• Cho Young-Suk
• Cha Ki-Seok

Classifications

• G06F3/044 Primary

  by capacitive means · CPC title

• G02F1/13338

  Input devices, e.g. touch panels · CPC title

• H03K17/9622

  using a plurality of detectors, e.g. keyboard · CPC title

• H03K2217/960755

  Constructional details of capacitive touch and proximity switches · CPC title

• G06F3/02

  Input arrangements using manually operated switches, e.g. using keyboards or dials · CPC title