Touch display apparatus

Patent metadata

Field	Value
Publication number	US-2017192590-A1
Application number	US-201615378281-A
Country	US
Kind code	A1
Filing date	Dec 14, 2016
Priority date	Jan 6, 2016
Publication date	Jul 6, 2017
Grant date	—

Abstract

A touch display apparatus includes a display panel, a receiving container and a touch controller. The display panel includes a metal pattern. The metal pattern includes a gate metal pattern and a data metal pattern. The gate metal pattern includes a gate line extending in a first direction. The data metal pattern includes a data line extending in a second direction crossing the first direction. The display panel is configured to display an image. The receiving container receives the display panel and includes a metal. The touch controller includes a first connecting line electrically connected to the metal pattern and a second connecting line electrically connected to the receiving container. The touch controller is configured to sense change of capacitance due to change of difference between the metal pattern and the receiving container.

First claim

What is claimed is:

1 . A touch display apparatus comprising:
a display panel comprising a metal pattern comprising a gate metal pattern and a data metal pattern, wherein
the gate metal pattern comprises a gate line extending in a first direction and a gate electrode electrically connected to the gate line,
the data metal pattern comprises a data line extending in a second direction crossing the first direction,
a source electrode is electrically connected to the data line and a drain electrode spaced apart from the source electrode, and
the display panel configured to display an image;
a receiving container receiving the display panel and comprising a metal; and a touch controller comprising a first connecting line electrically connected to the metal pattern and a second connecting line electrically connected to the receiving container, wherein the touch controller is configured to sense a change of capacitance due to a change of a distance between the metal pattern and the receiving container.

2 . The touch display apparatus of claim 1 , wherein the first connecting line is electrically connected to the gate metal pattern.

3 . The touch display apparatus of claim 2 , further comprising a backlight assembly disposed between the display panel and the receiving container.

4 . The touch display apparatus of claim 3 , wherein the backlight assembly comprises:
a light source part configured to provide light to the display panel; and a light guide plate configured to guide the light provided from the light source part.

5 . The touch display apparatus of claim 4 , further comprising:
a diffusing sheet disposed on the light guide plate and configured to diffuse the light exited from the light guide plate; and a prism sheet configured to condense the light exiting from the diffusing sheet.

6 . The touch display apparatus of claim 1 , wherein the first connecting line is connected to the data metal pattern.

7 . The touch display apparatus of claim 6 , further comprising a backlight assembly disposed between the display panel and the receiving container.

8 . The touch display apparatus of claim 7 , wherein the backlight assembly comprises:
a light source part configured to provide light to the display panel; and a light guide plate configured to guide the light provided from the light source part.

9 . The touch display apparatus of claim 8 , further comprising:
a diffusing sheet disposed on the light guide plate and configured to diffuse the light exited from the light guide plate; and a prism sheet configured to condense the light exited from the diffusing sheet.

10 . The touch display apparatus of claim 1 , wherein the change of capacitance due to the change of a distance between the metal pattern and the receiving container is determined by following equation:
C=ε*A/d, wherein C is the capacitance, A is an area of sensing the capacitance, ε is permittivity of free air space, and d is the distance between the metal pattern and the receiving container.

11 . A touch display apparatus comprising:
a display panel comprising a metal pattern comprising a gate metal pattern and a data metal pattern, wherein
the gate metal pattern comprises a gate line extending in a first direction and a gate electrode electrically connected to the gate line,
the data metal pattern comprises a data line extending in a second direction crossing the first direction,
a source electrode is electrically connected to the data line and a drain electrode spaced apart from the source electrode, and
the display panel configured to display an image;
a reflective sheet disposed under the display panel wherein the reflective sheet spaced apart from the display panel and the reflective sheet comprises a metal; and a touch controller comprising a first connecting line electrically connected to the metal pattern and a second connecting line electrically connected to the reflective sheet, wherein
the touch controller is configured to sense a change of capacitance due to a change of a distance between the metal pattern and the reflective sheet.

12 . The touch display apparatus of claim 11 , wherein the first connecting line is electrically connected to the gate metal pattern.

13 . The touch display apparatus of claim 12 , further comprising a backlight assembly disposed between the display panel and the reflective sheet.

14 . The touch display apparatus of claim 13 , wherein the backlight assembly comprises:
a light source part configured to provide light to the display panel; and a light guide plate configured to guide the light provided from the light source part.

15 . The touch display apparatus of claim 14 , further comprising:
a diffusing sheet disposed on the light guide plate and configured to diffuse the light exited from the light guide plate; and a prism sheet configured to condense the light exiting from the diffusing sheet.

16 . The touch display apparatus of claim 11 , wherein the first connecting line is connected to the data metal pattern.

17 . The touch display apparatus of claim 16 , further comprising a backlight assembly disposed between the display panel and the reflective sheet.

18 . The touch display apparatus of claim 17 , wherein the backlight assembly comprises:
a light source part configured to provide light to the display panel; and a light guide plate configured to guide the light provided from the light source part.

19 . The touch display apparatus of claim 18 , further comprising:
a diffusing sheet disposed on the light guide plate and configured to diffuse the light exited from the light guide plate; and a prism sheet configured to condense the light exited from the diffusing sheet.

20 . The touch display apparatus of claim 11 , wherein the change of capacitance due to the change of a distance between the metal pattern and the reflective sheet is determined by following equation:
C=ε*A/d, wherein C is the capacitance, A is an area of sensing the capacitance, ε is permittivity of free air space, and d is the distance between the metal pattern and the reflective sheet.

Assignees

• Samsung Display Co Ltd

Inventors

• Lim Sanghyun
• Jung Changsub
• Jo Ara
• Choi Jaewoo

Classifications

• G06F2203/04103

  Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices · CPC title

• G02F1/13338

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

• G02F1/1368

  in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} · CPC title

• G02F1/133615

  Edge-illuminating devices, i.e. illuminating from the side · CPC title

• G02F1/134309

  characterised by their geometrical arrangement · CPC title