Display apparatuses

Patent metadata

Field	Value
Publication number	US-9256097-B2
Application number	US-201314134369-A
Country	US
Kind code	B2
Filing date	Dec 19, 2013
Priority date	Apr 19, 2013
Publication date	Feb 9, 2016
Grant date	Feb 9, 2016

Abstract

A display apparatus includes a first substrate, a second substrate overlapping the first substrate, an image display part disposed between the first substrate and the second substrate, and a black matrix disposed on the second substrate. The display apparatus further includes a floating electrode overlapping the black matrix and being electrically floating. The display apparatus further includes first-type touch lines extending in a first direction, arranged along a second direction, electrically insulated from each other, and including a primary first-type touch line. The primary first-type touch line overlaps and is insulated from the floating electrode. The display apparatus further includes second-type touch lines extending in the second direction, arranged along the first direction, electrically insulated from each other, and including a primary second-type touch line. The primary second-type touch line overlaps and is insulated from the floating electrode.

First claim

What is claimed is:

1. A display apparatus comprising:
a first substrate;
a second substrate overlapping the first substrate;
an image display part disposed between the first substrate and the second substrate;
a black matrix disposed on the second substrate;
a primary first-type floating electrode overlapping a first portion of the black matrix and being electrically floating;
a plurality of first-type touch lines being electrically insulated from each other, the first-type touch lines including a primary first-type touch line, the primary first-type touch line overlapping the primary first-type floating electrode and being electrically insulated from the primary first-type floating electrode; and
a plurality of second-type touch lines being electrically insulated from each other, the second-type touch lines including a primary second-type touch line, the primary second-type touch line overlapping the primary first-type floating electrode and being electrically insulated from the primary first-type floating electrode.

2. The display apparatus of claim 1 , wherein the first-type touch lines extend in a first direction and arranged along a second direction, wherein the second-type touch lines extend in the second direction and arranged along the first direction.

3. The display apparatus of claim 2 , wherein the primary first-type touch line includes a primary first-type touch electrode and a secondary first-type touch electrode that are electrically connected to each other in the first direction, and wherein the primary first-type touch electrode has a mesh structure and has a substantially rhombus shape.

4. The display apparatus of claim 3 , wherein the primary first-type touch electrode overlaps four first-type floating electrodes that include the primary first-type floating electrode.

5. The display apparatus of claim 2 , further comprising: a crossing insulating layer disposed between the primary first-type touch line and the primary second-type touch line at a position where the primary first-type touch line overlaps the primary second-type touch line.

6. The display apparatus of claim 2 , wherein if a touch event is occurred at second substrate, then a first user capacitor, a second user capacitor, and a third user capacitor are formed, the first user capacitor being formed between the primary first-type touch line and the user, a second user capacitor being formed between the primary second-type touch line and the user, and the third user capacitor being formed between the primary first-type floating electrode and the user.

7. The display apparatus of claim 2 , further comprising:
a planarization layer disposed between the black matrix and the primary first-type floating electrode;
a first insulating layer disposed between the primary first-type floating electrode and the primary first-type touch line and disposed between the primary first-type floating electrode and the primary second-type touch line; and
a second insulating layer disposed between the image display part and the primary first-type touch line and disposed between the image display part and the primary second-type touch line.

8. The display apparatus of claim 7 , further comprising: a primary second-type floating electrode overlapping each of the primary first-type touch line and primary second-type touch line, being electrically insulated from each of the primary first-type touch line and primary second-type touch line by the second insulating layer, overlapping the first portion of the black matrix, and being electrically floating.

9. The display apparatus of claim 8 , wherein the primary second-type floating electrode has a same shape as the primary first-type floating electrode in a plan view of the display apparatus.

10. The display apparatus of claim 8 , further comprising: a secondary second-type floating electrode overlapping a second portion of the black matrix, being electrically floating, and being disposed at a same layer as the primary second-type floating electrode, wherein the plurality of first-type touch lines includes a secondary first-type touch line, and wherein the secondary second-type floating electrode overlaps the secondary first-type touch line without overlapping any second-type touch lines in a third direction that is perpendicular to each of the first direction and the second direction.

11. The display apparatus of claim 10 , further comprising: a secondary first-type floating electrode overlapping the secondary second-type floating electrode, being disposed on the planarization layer at a same layer as the primary first-type floating electrode, and being electrically floating, wherein the secondary first-type floating electrode overlaps the secondary first-type touch line without overlapping any second-type touch lines in the third direction, and wherein the secondary first-type touch line is disposed between the secondary first-type floating electrode and the secondary second-type floating electrode.

12. The display apparatus of claim 11 , further comprising: a first feeding electrode electrically connected to each of the secondary first-type floating electrode and the secondary second-type floating electrode, the first feeding electrode being disposed through each of the first insulating layer and the second insulating layer.

13. The display apparatus of claim 12 , further comprising: a second feeding electrode electrically connected to each of the primary first-type floating electrode and the primary second-type floating electrode, the second feeding electrode being disposed through each of the first insulating layer and the second insulating layer.

14. The display apparatus of claim 12 , wherein the first feeding electrode overlaps the second portion of the black matrix.

15. The display apparatus of claim 8 , further comprising: a feeding electrode electrically connected to each of the primary first-type floating electrode and the primary second-type floating electrode, the feeding electrode being disposed through each of the first insulating layer and the second insulating layer.

16. The display apparatus of claim 15 , further comprising: a via-hole disposed through each of the first insulating layer and the second insulating layer, wherein the feeding electrode is disposed in the via-hole.

17. The display apparatus of claim 15 , wherein the feeding electrode overlaps the first portion of the black matrix.

18. The display apparatus of claim 2 , further comprising: a secondary first-type floating electrode overlapping a second portion of the black matrix, being electrically floating, and being disposed at a same layer as the primary first-type floating electrode, wherein the plurality of first-type touch lines includes a secondary first-type touch line, and wherein the secondary first-type floating electrode overlaps the secondary first-type touch line without overlapping any second-type touch lines in a third direction that is perpendicular to each of the first direction and the second direction.

19. The display apparatus of claim 18 , wherein the primary first-type touch line is narrower than the secondary first-type touch line in the first direction.

20. The display apparatus of claim 18 , wherein the primary second-type touch line is narrower than the secondary first-type touch line in the first direction.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Sungman
• Kim Chul
• Oh Hwa Yeul
• Cho Youngje
• Hwang Hyunki

Classifications

• G06F2203/04111

  Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate · CPC title

• G06F2203/04112

  Electrode mesh in capacitive digitiser: electrode for touch sensing is formed of a mesh of very fine, normally metallic, interconnected lines that are almost invisible to see. This provides a quite large but transparent electrode surface, without need for ITO or similar transparent conductive material · CPC title

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title

• G02F1/13338 Primary

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

• G06F3/044

  by capacitive means · CPC title