Display panel with metal mesh units and display apparatus

Patent metadata

Field	Value
Publication number	US-11086439-B2
Application number	US-201916730003-A
Country	US
Kind code	B2
Filing date	Dec 30, 2019
Priority date	Mar 29, 2019
Publication date	Aug 10, 2021
Grant date	Aug 10, 2021

Abstract

Display panel and display apparatus are provided. The display panel includes a display layer and a touch control layer. The display layer includes pixel units each including a number of sub-pixels arranged as a matrix. The touch control layer includes a bridge layer, a touch control metal layer, and an insulation layer there-between. The touch control metal layer includes metal mesh units, corresponding to the pixel units. In the touch control metal layer, adjacent metal mesh units are not connected. The touch control layer also includes at least one first touch control electrode, each including multiple metal mesh units. Adjacent two metal mesh units of the multiple metal mesh units are electrically connected through a connection lead. The connection lead is disposed on the bridge layer and electrically connected to each of the adjacent two metal mesh units through a corresponding via hole in the insulation layer.

First claim

What is claimed is:

1. A display panel, comprising:
a display layer and a touch control layer, stacked together, wherein:
the display layer includes a plurality of pixel units on a substrate, one pixel unit of the plurality of pixel units including a number N of sub-pixels arranged as a matrix, wherein the number N is greater than or equal to 3 and smaller than or equal to 8;
the touch control layer includes a bridge layer, an insulation layer and a touch control metal layer, the insulation layer being disposed between the bridge layer and the touch control metal layer;
the touch control metal layer includes a plurality of metal mesh units;
the plurality of metal mesh units corresponds to the plurality of pixel units;
in the touch control metal layer, adjacent metal mesh units of the plurality of metal mesh units are not directly connected;
the touch control metal layer also includes at least one first touch control electrode;
one first touch control electrode of the at least one first touch control electrode includes multiple metal mesh units of the plurality of metal mesh units;
in the one first touch control electrode, adjacent two metal mesh units of the multiple metal mesh units are electrically connected through a connection lead;
the connection lead is disposed on the bridge layer;
the insulation layer includes a plurality of via holes; and
the connection lead is electrically connected to each of the adjacent two metal mesh units in the one first touch control electrode through a corresponding via hole in the insulation layer, wherein:
a metal mesh unit of the plurality of metal mesh units includes a plurality of metal lines;
the plurality of metal lines include a plurality of first metal lines extending along a first direction and a plurality of second metal lines extending along a second direction;
the plurality of first metal lines intersect the plurality of second metal lines to define mesh holes of the metal mesh unit;
an orthographic projection of at least one mesh hole on the substrate surrounds at least one sub-pixel of the plurality of sub-pixels;
the plurality of metal mesh units include a plurality of metal mesh unit rows disposed along the first direction and a plurality of metal mesh unit columns disposed along the second direction;
metal mesh units in two adjacent metal mesh unit rows are staggered along the first direction; and
for the one first touch control electrode, one metal mesh unit is respectively electrically connected with four adjacent metal mesh units in adjacent metal mesh rows through connection leads.

2. The display panel according to claim 1 , wherein:
a minimum distance between two adjacent metal mesh units of the plurality of metal mesh units is smaller than a length of one sub-pixel,
wherein:
the length of the one sub-pixel is a minimum one of a first length and a second length;
the first length is a sum of a length of the one sub-pixel along the first direction and a spacing between two adjacent sub-pixels along the first direction; and
the second length is a sum of a length of the one sub-pixel along the second direction and a spacing between two adjacent sub-pixels along the second direction.

3. The display panel according to claim 1 , wherein:
for the two adjacent metal mesh units in the one first touch control electrode electrically connected by the connection lead, two metal lines electrically connected to the connection lead are both second metal lines; and
the two metal lines electrically connected to the connection lead are disposed on a same straight line extending along the second direction.

4. The display panel according to claim 1 , wherein:
one metal mesh unit includes one mesh hole; and
an orthographic projection of the mesh hole on a plane of the substrate surrounds one sub-pixel.

5. The display panel according to claim 1 , wherein:
the plurality of metal mesh units are sequentially arranged along the first direction and the second direction, respectively;
metal lines of one of the plurality of metal mesh units define two mesh holes in one metal mesh unit;
the two mesh holes in the one metal mesh unit are arranged along a third direction; and
the third direction intersects both the first direction and the second direction.

6. The display panel according to claim 1 , wherein:
the touch control metal layer includes a plurality of first touch control electrodes;
the plurality of first touch control electrodes include a plurality of touch driving electrodes or a plurality of touch sensing electrodes;
the plurality of touch driving electrodes are insulated from the plurality of touch sensing electrodes;
the plurality of touch driving electrodes are arranged as a touch driving electrode group along a fourth direction;
the plurality of touch sensing electrodes are arranged as a touch sensing electrode group along a fifth direction;
a plurality of touch driving electrode groups are arranged along the fifth direction;
a plurality of touch sensing electrode groups are arranged along the fourth direction;
the fourth direction intersects the fifth direction;
at intersecting positions of the plurality of touch driving electrode groups and the plurality of touch sensing electrode groups, two adjacent touch driving electrodes are electrically connected by a bridge line; the bridge line is disposed on the bridge layer; or
two adjacent touch sensing electrodes are electrically connected by a bridge line; and the bridge line is disposed on the bridge layer.

7. The display panel according to claim 6 , wherein:
the touch control metal layer also includes a dummy touch control electrode;
the dummy touch control electrode is insulated from the plurality of first touch control electrodes;
the dummy touch control electrode includes a plurality of metal mesh units;
the dummy touch control electrode is disposed at least one of between two adjacent first touch control electrodes of the plurality of first touch control electrodes and inside one first touch control electrode of the plurality of first touch control electrodes; and
for metal mesh units in one dummy touch control electrode, two adjacent metal mesh units are insulated from each other.

8. The display panel according to claim 7 , wherein:
in the touch control metal layer, the plurality of metal mesh units are arranged as a matrix.

9. The display panel according to claim 1 , wherein:
the display layer includes the substrate, a transistor array, a light-emitting layer and an encapsulation layer that are sequentially disposed;
the touch control layer is disposed on a side of the encapsulation layer away from the light-emitting layer; and
in the touch control layer, the touch control metal layer is disposed on a side of the insulation layer away from the substrate.

10. The display panel according to claim 9 , wherein:
the substrate is a flexible substrate.

11. The display panel according to claim 9 , wherein:
the insulation layer includes an organic material layer.

12. A display apparatus, comprising:
a display panel, including:
a display layer and a touch control layer, stacked together, the display layer including a substrate,
wherein:
the display layer includes a plurality of pixel units, one pixel unit of the plurality of pixel units including a number N of sub-pixels arranged as a matrix, wherein the number N is greater than or equal to 3 and smaller than or equal to 8;
the touch control layer includes a bridge layer, an insulation layer and a touch control metal layer, the insulation layer being disposed between the bridge layer and the touch control metal layer;
the touch control metal layer

Assignees

• Shanghai Tianma Micro Elect Co

Inventors

• Ding Hong
• Yao Qijun
• Su Xiaoyue

Classifications

• H10K59/131 Primary

  Interconnections, e.g. wiring lines or terminals · CPC title

• H10K59/87

  Passivation; Containers; Encapsulations · CPC title

• G06F3/0416 Primary

  Control or interface arrangements specially adapted for digitisers · CPC title

• G06F3/0443 Primary

  using a single layer of sensing electrodes · CPC title

• Y02E10/549

  Organic PV cells · CPC title