DISPLAY PANEL CAPABLE OF DETECTING TOUCH AND DISPLAY APPARATUS HAVING THE SAME

• US 20140218322A1
• Filed: 02/04/2014
• Published: 08/07/2014
• Est. Priority Date: 02/07/2013
• Status: Abandoned Application

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: CHUNG, Seong-eun, JUNG, Il-Yong
• Application Number:
  US14/171,903
• Publication Number:
  US 20140218322A1
• Time in Patent Office: Days
• US Class Current: 345/173
• CPC Class Codes: G06F 2203/04103 Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
• CPC Class Codes: G06F 3/041 Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
• CPC Class Codes: G06F 3/0412 Digitisers structurally integrated in a display
• CPC Class Codes: G06F 3/044 by capacitive means
• CPC Class Codes: G06F 3/0445 using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
• CPC Class Codes: G06F 3/0446 using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Abstract

A display apparatus includes: a display panel including a substrate, a black matrix formed on the substrate and dividing at least one of a plurality of pixels and a plurality of sub-pixels from others, and a mesh layer including a plurality of first conductive wires extended in a first direction on the substrate and a plurality of second conductive wires extended in a second direction different from the first direction on the substrate; and a controller configured to determine a location of a touch based on a change in electric current of at least one from among the plurality of first conductive wires and at least one from among the plurality of second conductive wires by the touch occurring on the display panel, wherein the plurality of first conductive wires and the plurality of second conductive wires are disposed on the substrate according to an arranged location of the matrix.

Claims

1. A display apparatus comprising:

a display panel comprising a substrate, a black matrix formed on the substrate and dividing at least one of a plurality of pixels and a plurality of sub-pixels from others, and a mesh layer comprising a plurality of first conductive wires extended in a preset first direction on the substrate and a plurality of second conductive wires extended in a second direction different from the first direction on the substrate; and

a controller configured to determine a location of a touch based on a change in electric current of at least one from among the plurality of first conductive wires and at least one from among the plurality of second conductive wires by the touch occurring on the display panel,

wherein the plurality of first conductive wires and the plurality of second conductive wires are disposed on the substrate according to an arranged location of the black matrix.

2. The display apparatus of claim 1, wherein the controller applies a preset level of electric current for detecting a touch to each of the plurality of first conductive wires and the plurality of second conductive wires and determines coordinates of the location of the touch by identifying the plurality of first conductive wires and the plurality of second conductive wires where the change in electric current by the touch is detected.

3. The display apparatus of claim 1, wherein the mesh layer further comprises an insulating layer interposed between the plurality of first conductive wires and the plurality of second conductive wires to electrically insulate the plurality of first conductive wires from the plurality of second conductive wires.

4. The display apparatus of claim 1, wherein the plurality of first conductive wires and the plurality of second conductive wires comprise a metal material.

5. The display apparatus of claim 1, wherein respective widths of the plurality of first conductive wires and the plurality of second conductive wires are smaller than widths of a row and a column of the black matrix.

6. The display apparatus of claim 1, wherein the substrate comprises a light entering surface in which light emitted to display an image on the display panel enters, and a light exiting surface which is disposed in an opposite direction of the light entering surface and from which the emitted light exits, and wherein the black matrix is disposed on the light entering surface, and the mesh layer is disposed on the light exiting surface.

7. The display apparatus of claim 6, wherein the plurality of first conductive wires and the plurality of second conductive wires are disposed in a same line as the black matrix along a traveling direction of the emitted light.

8. The display apparatus of claim 6, further comprising a backlight unit disposed on the display panel and generating the emitted light.

9. The display apparatus of claim 1, wherein the plurality of first conductive wires and the plurality of second conductive wires are perpendicular to each other.

17. The display apparatus of claim 1, wherein the substrate comprises a glass substrate.

10. A display panel comprising:

a substrate;

a black matrix formed on a first surface of the substrate and dividing at least one of a plurality of pixels and a plurality of sub-pixels from others on the display panel; and

a mesh layer formed on a second surface of the substrate disposed in an opposite direction of the first surface and comprising a plurality of first conductive wires extended in a preset first direction on the substrate and a plurality of second conductive wires extended in a second direction different from the first direction on the substrate,

wherein a preset level of electric current for detecting a touch is applied to the at least one from among the plurality of first conductive wires and at least one from among the plurality of second conductive wires so that a change in electric current occurs in the plurality of first conductive wires and the plurality of second conductive wires corresponding to a location of a touch by a user when the touch occurs on the mesh layer, and

the plurality of first conductive wires and the plurality of second conductive wires are disposed according to an arranged location of the black matrix.

11. The display panel of claim 10, wherein the plurality of first conductive wires and the plurality of second conductive wires are electrically connected to a controller of a display apparatus so that the controller determines the location of the touch occurring based on a change in electric current of the plurality of first conductive wires and the plurality of second conductive wires.

12. The display panel of claim 10, wherein the mesh layer further comprises an insulating layer interposed between the plurality of first conductive wires and the plurality of second conductive wires to electrically insulate the plurality of first conductive wires from the plurality of second conductive wires.

13. The display panel of claim 10, wherein the plurality of first conductive wires and the plurality of second conductive wires comprise a metal material.

14. The display panel of claim 10, wherein respective widths of the plurality of first conductive wires and the plurality of second conductive wires are smaller than widths of a row and a column of the black matrix.

15. The display panel of claim 10, wherein light emitted to display an image on the display panel enters the first surface of the substrate, the emitted light entering the first surface exits from the second surface, and the plurality of first conductive wires and the plurality of second conductive wires are disposed in a same line as the matrix along a traveling direction of the emitted light.

16. The display apparatus of claim 10, wherein the plurality of first conductive wires and the plurality of second wires are perpendicular to each other.

18. The display panel of claim 10, wherein the substrate comprises a glass substrate.