TECHNICAL FIELD

The present disclosure relates to but is not limited to the technical field of display, in particular to a display panel, a touch control structure and a display device.

BACKGROUND

Organic Light Emitting Diode (OLED) is an active light emitting display component with the advantages of self-illumination, wide viewing angle, high contrast, low power consumption, extremely high response speed, etc. With the continuous development of display technology, Flexible Display device with OLED as a light emitting device and Thin film Transistor (TFT) for implementing signal control has become the mainstream product in the display field.

Limited by product requirements such as flexible folding and narrow frame, etc., the touch control substrate of OLED is in the form of Flexible Multi-Layer On Cell (FMLOC). The flexible touch control substrate is provided on an encapsulation layer of the OLED backplane and has the advantages of lightness, thinness and foldability. Considering reducing resistance and improving sensitivity, the driving electrode (Tx) and sensing electrode (Rx) of the touch control substrate are in a form of Metal Mesh. Compared with using transparent conductive material (such as Indium Tin Oxide, ITO) to form touch control electrodes, Metal Mesh has the advantages of low resistance, less thickness and fast response speed.

SUMMARY

The following is a summary of the subject matter described in detail in the present disclosure. This summary is not intended to limit the protection scope of the claims.

In one aspect, a display panel is provided, including: a substrate, a display structure layer disposed on the substrate and a touch control structure layer disposed on the display structure layer, wherein the display structure layer includes a light-emitting region and a non-light-emitting region, the light-emitting region includes a plurality of periodically-arranged subpixels, and the non-light-emitting region includes subpixel boundaries between adjacent subpixels; the touch control structure layer includes a plurality of mesh pattern units which are polygons formed by metal wires, and a region enclosed by orthographic projections of the metal wires on the substrate contains an orthographic projection of at least one subpixel on the substrate, and orthographic projections of subpixel boundaries on the substrate contain the orthographic projections of the metal wires on the substrate;

the touch control structure layer includes a bridge layer, an insulating layer and a touch control layer which are in a stacked arrangement, wherein the touch control layer includes a plurality of first touch control electrodes and a plurality of first connecting parts arranged sequentially along a first extending direction and a plurality of second touch control electrodes arranged sequentially along a second extending direction, wherein the first extending direction intersects the second extending direction; the plurality of first touch control electrodes and the plurality of first connecting parts are arranged alternately and connected in sequence, and the plurality of second touch control electrodes are arranged at intervals; the bridge layer includes connecting bridges connected with adjacent second touch control electrodes;

the touch control structure layer includes a Bulk region including a plurality of repeating units repetitively and continuously arranged, wherein a plurality of mesh pattern units in the repeating units are provided with a plurality of cuts for disconnecting the metal wires of the mesh pattern units; a maximum characteristic length S of the repeating unit meets S=L*tan (1/(57.3*CPD)), wherein L is a distance from a viewer's eyes to a display screen, CPD is a spatial frequency of the viewer's eyes within a range of 1 degree, L is between 100 mm to 1000 mm and CPD is greater than or equal to 10; the maximum characteristic length of the repeating unit is a maximum size of the repeating unit in a certain direction.

In some possible implementations, when the distance from the viewer's eyes to the display screen is 100 mm to 400 mm, the maximum characteristic length of the repeating unit is 0.2 mm to 0.4 mm; when the distance from the viewer's eyes to the display screen is 400 mm to 1000 mm, the maximum characteristic length of the repeating unit is 0.4 mm to 1.2 mm.

In some possible implementations, a mesh pattern unit at least includes two mutually parallel first sides and two mutually parallel second sides, wherein the first sides and the second sides are non-parallel;

the cuts include consecutive cuts, a quantity of cuts in the consecutive cuts is less than or equal to 3, the consecutive cuts are cuts which are provided on both of the two first sides of each mesh pattern unit in at least one mesh pattern unit arranged continuously along a first direction, wherein the first direction intersects the first sides of each mesh pattern unit, or the consecutive cuts are cuts which are provided on both of the two second sides of each mesh pattern unit in at least one mesh pattern unit arranged continuously along a second direction, wherein the second direction intersects the second sides of each mesh pattern unit.

In some possible implementations, the cuts further include corner cuts, in a situation that the corner cuts have consecutive cuts along the first direction or the second direction, a quantity of cuts in the consecutive cuts is less than or equal to 2; the corner cuts are cuts arranged on one first side and one second side of the mesh pattern unit.

In some possible implementations, when there are a plurality of the corner cuts, the plurality of corner cuts are formed an open shape.

In some possible implementations, the touch control structure layer includes a Bulk region, a Boundary region and a Bridge region, the Bulk region includes the first touch control electrodes and the second touch control electrodes, the Bridge region includes the first connecting parts and second connecting parts; in the plurality of repeating units in the touch control structure layer which are formed by repetitive and continuous arrangement, the repeating units are divided into first repeating units containing cuts in the Bulk region, second repeating units containing cuts in the Boundary region and third repeating units containing cuts in the Bridge region;

a ratio of a cut density of the first repeating units to a cut density of the second repeating units is 0.7-1.3; a ratio of the cut density of the first repeating units to a cut density of the third repeating units is 0.7-1.3; a ratio of the cut density of the second repeating units to the cut density of the third repeating units is 0.7-1.3; wherein the cut density is a ratio of a quantity of cuts in the repeating units to a quantity of the mesh pattern units in the repeating units.

In some possible implementations, the cuts at least include first direction cuts that disconnect the first sides and second direction cuts that disconnect the second sides, wherein

the ratio of the cut density of the first repeating units to the cut density of the second repeating units is 0.7-1.3, which includes any one or more of the following: a ratio of a first direction cut density of the first repeating units to a first direction cut density of the second repeating units is 0.7-1.3; a ratio of a second direction cut density of the first repeating units to a second direction cut density of the second repeating units is 0.7-1.3;

the ratio of the cut density of the first repeating units to the cut density of the third repeating units is 0.7-1.3, which includes any one or more of the following: a ratio of a first direction cut density of the first repeating units to a first direction cut density of the third repeating units is 0.7-1.3; a ratio of a second direction cut density of the first repeating units to a second direction cut density of the third repeating units is 0.7-1.3;

the ratio of the cut density of the second repeating units to the cut density of the third repeating units is 0.7-1.3, which includes any one or more of the following: a ratio of a first direction cut density of the second repeating units to a first direction cut density of the third repeating units is 0.7-1.3; a ratio of a second direction cut density of the second repeating units to a second direction cut density of the third repeating units is 0.7-1.3;

the first direction cut density is a ratio of a quantity of first direction cuts in the repeating units to the quantity of the mesh pattern units in the repeating units, and the second direction cut density is a ratio of a quantity of second direction cuts in the repeating units to the quantity of the mesh pattern units in the repeating units.

In some possible implementations, the plurality of subpixels include first subpixels emitting a first color, second subpixels emitting a second color and third subpixels emitting a third color; in the first repeating units, the second repeating units and the third repeating units, the cuts include first cuts between the first and second subpixels, second cuts between the second and third subpixels and third cuts between the first and third subpixels;

in the first repeating units, the second repeating units and the third repeating units, a ratio of a first cut density to a second cut density is 0.7-1.3; a ratio of a second cut density to a third cut density is 0.7-1.3; a ratio of a first cut density to a third cut density is 0.7-1.3;

the first cut density is a ratio of a quantity of first cuts in the repeating units to the quantity of the mesh pattern units in the repeating units; the second cut density is a ratio of a quantity of second cuts in the repeating units to the quantity of the mesh pattern units in the repeating units; and the third cut density is a ratio of a quantity of third cuts in the repeating units to the quantity of the mesh pattern units in repeating units.

In some possible implementations, the ratio of the first cut density to the second cut density is 0.7-1.3, which includes any one or more of the following: a ratio of a first horizontal cut density to a second horizontal cut density is 0.7-1.3; a ratio of a first vertical cut density to a second vertical cut density is 0.7-1.3; and a ratio of a first diagonal cut density to a second diagonal cut density is 0.7-1.3;

the ratio of the second cut density to the third cut density is 0.7-1.3, which includes any one or more of the following: a ratio of a second horizontal cut density to a third horizontal cut density is 0.7-1.3; a ratio of a second vertical cut density to a third vertical cut density is 0.7-1.3; and a ratio of a second diagonal cut density to a third diagonal cut density is 0.7-1.3;

the ratio of the first cut density to the third cut density is 0.7-1.3, which includes any one or more of the following: a ratio of a first horizontal cut density to a third horizontal cut density is 0.7-1.3; a ratio of a first vertical cut density to a third vertical cut density is 0.7-1.3; and a ratio of a first diagonal cut density to a third diagonal cut density is 0.7-1.3.

In some possible implementations, a ratio of the first cut density of the first repeating units to the first cut density of the second repeating units is 0.7-1.3; a ratio of the second cut density of the first repeating units to the second cut density of the second repeating units is 0.7-1.3; and a ratio of the third cut density of the first repeating units to the third cut density of the second repeating units is 0.7-1.3;

a ratio of the first cut density of the first repeating units to the first cut density of the third repeating units is 0.7-1.3; a ratio of the second cut density of the first repeating units to the second cut density of the third repeating units is 0.7-1.3; and a ratio of the third cut density of the first repeating units to the third cut density of the third repeating units is 0.7-1.3;

a ratio of the first cut density of the second repeating units to the first cut density of the third repeating units is 0.7-1.3; a ratio of the second cut density of the second repeating units to the second cut density of the third repeating units is 0.7-1.3; and a ratio of the third cut density of the second repeating units to the third cut density of the third repeating units is 0.7-1.3.

In some possible implementations, the connecting bridge includes bonding pad parts and second connecting wires, wherein the bonding pad parts are configured to be coupled with adjacent second touch control electrodes through via holes on the insulating layer and the second connecting wires are configured to be coupled with the bonding pad parts;

the touch control layer further includes second connecting units and first connecting wires which are alternately arranged and insulated from each other, wherein positions of the second connecting units correspond to positions of the bonding pad parts on the bridge layer, the second connecting units are configured to be coupled with the bonding pad parts through via holes on the insulating layer, orthographic projections of the first connecting wires on the substrate basically are overlapped with orthographic projections of second connecting wires on the substrate.

In another aspect, a display device is provided, including the aforementioned display panel.

In another aspect, a touch control structure is provided, including: a bridge layer, an insulating layer and a touch control layer which are in a stacked arrangement, wherein the touch control layer includes a plurality of first touch control electrodes and a plurality of first connecting parts arranged sequentially along a first extending direction and a plurality of second touch control electrodes arranged sequentially along a second extending direction, wherein the first extending direction intersects the second extending direction; the plurality of first touch control electrodes and the plurality of first connecting parts are arranged alternately and connected in sequence, and the plurality of second touch control electrodes are arranged at intervals; the bridge layer includes connecting bridges connected with adjacent second touch control electrodes;

the touch control structure layer includes a plurality of repeating units repetitively and continuously arranged, wherein the repeating units include a plurality of mesh pattern units which are polygons formed by metal wires, the plurality of mesh pattern units are provided with a plurality of cuts for disconnecting the metal wires of the mesh pattern units; wherein the repeating unit has a maximum characteristic length S, which meets S=L*tan (1/(57.3*CPD)), wherein L is a distance from a viewer's eyes to a display screen, CPD is a spatial frequency of the viewer's eyes within a range of 1 degree, L is between 100 mm to 1000 mm and CPD is greater than or equal to 10; the maximum characteristic length of the repeating unit is a maximum size of the repeating unit in a certain direction.

In some possible implementations, when the distance from the viewer's eyes to the display screen is 100 mm to 400 mm, the maximum characteristic length of the repeating unit is 0.2 mm to 0.4 mm; when the distance from the viewer's eyes to the display screen is 400 mm to 1000 mm, the maximum characteristic length of the repeating unit is 0.4 mm to 1.2 mm.

In some possible implementations, the mesh pattern unit at least includes two mutually parallel first sides and two mutually parallel second sides, wherein the first sides and the second sides are non-parallel;

the cuts include consecutive cuts, a quantity of cuts in the consecutive cuts is less than or equal to 3, the consecutive cuts are cuts which are provided on both of the two first sides of each mesh pattern unit in at least one mesh pattern unit arranged continuously along a first direction, wherein the first direction intersects the first sides of each mesh pattern unit, or the consecutive cuts are cuts which are provided on both of the two second sides of each mesh pattern unit in at least one mesh pattern unit arranged continuously along a second direction, wherein the second direction intersects the second sides of each mesh pattern unit.

In some possible implementations, the cuts further include corner cuts, in a situation that the corner cuts have consecutive cuts along the first direction or the second direction, a quantity of cuts in the consecutive cuts is less than or equal to 2; the corner cuts are cuts arranged on one first side and one second side of the mesh pattern unit.

In some possible implementations, when there are a plurality of the corner cuts, the plurality of corner cuts are formed an open shape.

In some possible implementations, the touch control structure layer includes a Bulk region, a Boundary region and a Bridge region, the Bulk region includes the first touch control electrodes and the second touch control electrodes, the Bridge region includes the first connecting parts and second connecting parts; in the plurality of repeating units in the touch control structure layer which are formed by repetitive and continuous arrangement, the repeating units are divided into first repeating units containing cuts in the Bulk region, second repeating units containing cuts in the Boundary region and third repeating units containing cuts in the Bridge region;

a ratio of a cut density of the first repeating units to a cut density of the second repeating units is 0.7-1.3; a ratio of a cut density of the first repeating units to a cut density of the third repeating units is 0.7-1.3; a ratio of a cut density of the second repeating units to a cut density of the third repeating units is 0.7-1.3; wherein the cut density is a ratio of a quantity of cuts in the repeating units to a quantity of the mesh pattern units in the repeating units.

In some possible implementations, the cuts at least include first direction cuts that disconnect the first sides and second direction cuts that disconnect the second sides, wherein

the ratio of the cut density of the first repeating units to the cut density of the second repeating units is 0.7-1.3, which includes any one or more of the following: a ratio of a first direction cut density of the first repeating units to a first direction cut density of the second repeating units is 0.7-1.3; a ratio of a second direction cut density of the first repeating units to a second direction cut density of the second repeating units is 0.7-1.3;

the ratio of the cut density of the first repeating units to the cut density of the third repeating units is 0.7-1.3, which includes any one or more of the following: a ratio of a first direction cut density of the first repeating units to a first direction cut density of the third repeating units is 0.7-1.3; a ratio of a second direction cut density of the first repeating units to a second direction cut density of the third repeating units is 0.7-1.3;

the ratio of the cut density of the second repeating units to the cut density of the third repeating units is 0.7-1.3, which includes any one or more of the following: a ratio of a first direction cut density of the second repeating units to a first direction cut density of the third repeating units is 0.7-1.3; a ratio of a second direction cut density of the second repeating units to a second direction cut density of the third repeating units is 0.7-1.3;

the first direction cut density is a ratio of a quantity of first direction cuts in the repeating units to the quantity of the mesh pattern units in the repeating units, and the second direction cut density is a ratio of a quantity of second direction cuts in the repeating units to the quantity of the mesh pattern units in the repeating units.

In some possible implementations, the connecting bridge includes bonding pad parts and second connecting wires, wherein the bonding pad parts are configured to be coupled with adjacent second touch control electrodes through via holes on the insulating layer and the second connecting wires are configured to be coupled with the bonding pad parts;

the touch control layer further includes second connecting units and first connecting wires which are alternately arranged and insulated from each other, wherein positions of the second connecting units correspond to positions of the bonding pad parts on the bridge layer, the second connecting units are configured to be coupled with the bonding pad parts through via holes on the insulating layer, orthographic projections of the first connecting wires on the substrate basically are overlapped with orthographic projections of the second connecting wires on the substrate.

Other aspects will become apparent upon reading and understanding the accompanying drawings and the detailed description.

