CN112130697B - Touch display panel and display device - Google Patents

Abstract

The embodiment of the invention provides a touch display panel and a display device, which solve the technical problems that the touch display panel in the prior art has bright lines and the display effect is reduced. The touch display panel provided by the embodiment of the invention comprises a plurality of touch electrodes, wherein the orthographic projection of at least one touch electrode of two adjacent touch electrodes on a substrate overlaps with the orthographic projection part of an opening on the substrate; the touch display panel further comprises a shielding layer arranged on one side of the touch layer close to the pixel limiting layer or one side of the touch layer far from the pixel limiting layer; the front projection of the shielding layer on the substrate and the front projection of the gap on the substrate are at least partially overlapped, so that the generation of bright lines is avoided, and the display effect is improved.

Description

Touch display panel and display device

[Technical field]

The present invention relates to the field of display technology, and in particular to a touch display panel and a display device.

【Background technique】

With the development of touch technology and display technology, touch display devices have been sought after by more and more people. Taking the common touch-type smart mobile terminals as an example, the increasingly high screen-to-body ratio has brought users a more extreme visual experience than ever before. However, when the touch layer in the prior art is manufactured, there is often a bonding error when the metal traces on the touch layer are bonded to the metal traces on the touch driver chip, which makes the metal traces in the touch layer very close to the pixel opening area, and even part of the metal traces will cover part of the pixel opening. Therefore, there is a difference in brightness between the display area covered by the metal traces and other display areas, thereby forming cross bright lines, which affects the display effect.

[Summary of the invention]

In view of this, an embodiment of the present invention provides a touch display panel and a display device. The touch display panel provided by the embodiment of the present invention includes multiple touch electrodes, wherein the orthographic projection of at least one touch electrode of two adjacent touch electrodes on the base substrate partially overlaps with the orthographic projection of the opening on the base substrate; wherein the touch display panel also includes a blocking layer arranged on a side of the touch layer close to the pixel defining layer or on a side away from the pixel defining layer; the orthographic projection of the blocking layer on the base substrate at least partially overlaps with the orthographic projection of the gap on the base substrate, thereby avoiding the generation of bright lines and improving the display effect.

As one aspect of the present invention, an embodiment of the present invention provides a touch display panel, including:

substrate substrate;

A driving circuit layer disposed on one side of the base substrate;

A pixel defining layer is arranged on a side of the driving circuit layer away from the base substrate, wherein a plurality of openings penetrating the pixel defining layer are formed in the pixel defining layer;

A light emitting layer disposed on a side of the pixel defining layer away from the driving circuit layer, the light emitting layer comprising a plurality of light emitting units, each of the light emitting units being located in each of the openings; and

A touch layer disposed on a side of the light emitting layer away from the pixel defining layer;

The touch layer includes a plurality of touch electrodes, a gap is provided between two adjacent touch electrodes, and an orthographic projection of at least one touch electrode of the two adjacent touch electrodes on the base substrate partially overlaps with an orthographic projection of the opening on the base substrate;

as well as

A shielding layer disposed on a side of the touch layer close to the pixel defining layer or a side away from the pixel defining layer;

The orthographic projection of the shielding layer on the base substrate at least partially overlaps with the orthographic projection of the gap on the base substrate.

In an embodiment of the present invention, each of the touch electrodes is a grid structure.

In one embodiment of the present invention, two adjacent touch electrodes are respectively a first touch electrode and a second touch electrode; wherein, the orthographic projection of the first touch electrode on the base substrate partially overlaps with the orthographic projection of the opening on the base substrate, and the orthographic projection of the second touch electrode on the base substrate does not overlap with the orthographic projection of the opening on the base substrate; the orthographic projection of the shielding layer on the base substrate partially overlaps with the orthographic projection of the first touch electrode on the base substrate; the orthographic projection of the shielding layer on the base substrate partially overlaps with the orthographic projection of the pixel defining layer directly below the second touch electrode on the base substrate.

In one embodiment of the present invention, two adjacent touch electrodes are respectively a first touch electrode and a second touch electrode;

The orthographic projection of the first touch electrode on the base substrate overlaps with the orthographic projection of the opening on the base substrate, and the orthographic projection of the second touch electrode on the base substrate overlaps with the orthographic projection of the opening on the base substrate;

In the direction in which the pixel defining layer and the touch layer overlap, an edge of the shielding layer close to the first touch electrode and an edge of the first touch electrode close to the shielding layer are on the same straight line;

In the direction in which the touch layer and the pixel defining layer overlap, an edge of the shielding layer close to the second touch electrode and an edge of the second touch electrode close to the shielding layer are on the same straight line.

In one embodiment of the present invention, the length of the orthographic projection of the shielding layer on the base substrate in the first direction is greater than or equal to the length of the orthographic projection of the opening on the base substrate in the first direction;

Wherein, an extending direction of the slit from one touch electrode to the other touch electrode of two adjacent touch electrodes is a first direction.

In one embodiment of the present invention, a side edge of the shielding layer close to the opening is on the same straight line as a side edge of the touch electrode close to the opening;

Wherein, an overlapping area of the orthographic projection of the touch electrode on the base substrate and the orthographic projection of the opening on the base substrate is a first orthographic projection, and a length of the first orthographic projection in the second direction is a first width;

The overlapping area of the orthographic projection of the shielding layer on the base substrate and the orthographic projection of the opening on the base substrate is a second orthographic projection, and the length of the second orthographic projection in the second direction is a second width;

The second width is less than or equal to the first width;

The second direction and the first direction are located in the same plane, and the second direction is perpendicular to the first direction. The second direction is perpendicular to the direction in which the pixel defining layer and the touch layer overlap.

In an embodiment of the present invention, the material of the shielding layer is the same as that of the touch electrodes.

In an embodiment of the present invention, the orthographic projection of the shielding layer on the base substrate completely covers the orthographic projections of two adjacent touch electrodes on the base substrate and the orthographic projection of the gap on the base substrate.

In one embodiment of the present invention, a side edge of the shielding layer close to the opening is on the same straight line as a side edge of the touch electrode close to the opening;

Wherein, an overlapping area of the orthographic projection of the touch electrode on the base substrate and the orthographic projection of the opening on the base substrate is a first orthographic projection, and a length of the first orthographic projection in the second direction is a first width;

The overlapping area of the orthographic projection of the shielding layer on the base substrate and the orthographic projection of the opening on the base substrate is a second orthographic projection, and the length of the second orthographic projection in the second direction is a second width;

The second width is less than or equal to the first width;

The second direction and the first direction are located in the same plane, and the second direction is perpendicular to the first direction. The second direction is perpendicular to the direction in which the pixel defining layer and the touch layer overlap.

In an embodiment of the present invention, the light shielding layer is made of black light shielding material.

In one embodiment of the present invention, a gap is provided between any two adjacent touch electrodes among the plurality of touch electrodes distributed in the first array, and the plurality of the gaps are distributed in the second array;

In the row direction of the second array, the first connecting line connects the centers of every two adjacent slots, the first connecting lines are distributed periodically, and the shape of the first connecting lines in one period is a broken line or a curve.

In one embodiment of the present invention, the line segments of the first connecting line in two adjacent periods are respectively a first line segment and a second line segment;

Each gap connected by the second line segment is rotated by a first angle relative to each gap connected by the first line segment.

In one embodiment of the present invention, the plurality of touch electrodes are distributed in an array;

The plurality of touch electrodes are divided into a plurality of drive touch electrodes arranged in an array and a plurality of sense touch electrodes arranged in an array, and the drive touch electrode array and the sense touch electrode array are arranged at intervals;

Along the row direction of the array, two adjacent driving touch control electrodes are connected by a connecting electrode to form a plurality of driving touch control electrode groups extending along the row direction and arranged along the column direction;

Along the column direction of the array, two adjacent sensing touch electrodes are electrically connected via a bridging electrode to form a plurality of sensing touch electrode groups extending along the column direction and arranged along the row direction.

In one embodiment of the present invention, the driving touch electrodes, the sensing touch electrodes and the connecting electrodes are located in the same layer, and the bridging electrodes and the sensing touch electrodes are located in different layers;

Wherein, the shielding layer and the bridging electrode are arranged in the same layer.

In one embodiment of the present invention, the plurality of touch electrodes include: a plurality of self-capacitive touch electrodes arranged in an array;

The touch layer further includes:

A plurality of touch lines are provided and connected in a one-to-one correspondence with the plurality of self-capacitive touch electrodes.

As a second aspect of the present invention, an embodiment of the present invention provides a display device, including the touch display panel as described above.

The touch display panel provided by an embodiment of the present invention includes multiple touch electrodes, wherein the orthographic projection of at least one touch electrode of two adjacent touch electrodes on the base substrate partially overlaps with the orthographic projection of the opening on the base substrate; wherein the touch display panel also includes a shielding layer arranged on a side of the touch layer close to the pixel defining layer or on a side away from the pixel defining layer; the orthographic projection of the shielding layer on the base substrate at least partially overlaps with the orthographic projection of the gap on the base substrate, thereby avoiding the generation of bright lines and improving the display effect.

【Brief Description of the Drawings】

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

FIG1 is a schematic diagram of a partial structure of a touch display panel provided by an embodiment of the present invention;

FIG2 is a cross-sectional view of the touch display panel Q region shown in FIG1 along the B1-B2 cross section;

FIG3 is a cross-sectional view of a touch display panel in another embodiment of the present invention in the same Q region as the touch display panel shown in FIG1 along the B1 - B2 cross section;

FIG4 is a cross-sectional view of a touch display panel in another embodiment of the present invention in the same Q region as the touch display panel shown in FIG1 along the B1 - B2 cross section;

FIG5 is a cross-sectional view of a touch display panel in another embodiment of the present invention in the same Q region as the touch display panel shown in FIG1 along the B1 - B2 cross section;

FIG6 is a cross-sectional view of a touch display panel in another embodiment of the present invention in the same Q region as the touch display panel shown in FIG1 along the B1 - B2 cross section;

FIG. 7 is a partial enlarged view of a touch display panel in another embodiment of the present invention at the same region as region Q in FIG. 1 ;

FIG8 is a partial enlarged view of a touch display panel in another embodiment of the present invention at the same region as region Q in FIG1 ;

FIG9 is a partial enlarged view of a touch display panel in another embodiment of the present invention at the same region as region Q in FIG1 ;

FIG10 is a partial enlarged view of a touch display panel in another embodiment of the present invention at the same region as region Q in FIG1 ;

FIG11 is a partial enlarged view of a touch display panel in another embodiment of the present invention at the same region as region Q in FIG1 ;

FIG12 is a partial enlarged view of a touch display panel in another embodiment of the present invention at the same region as region Q in FIG1 ;

FIG13 is a cross-sectional view of a touch display panel in another embodiment of the present invention in the same Q region as the touch display panel shown in FIG1 along the B1 - B2 cross section;

FIG14 is a cross-sectional view of a touch display panel in another embodiment of the present invention in the same Q region as the touch display panel shown in FIG1 along the B1 - B2 cross section;

FIG15 is a schematic diagram showing the structure of a touch layer of a touch display panel provided in one embodiment of the present invention;

FIG16 is a partial enlarged view of the F region in the touch layer shown in FIG15 ;

FIG17 is a cross-sectional view of the touch layer shown in FIG15 along the A-A section;

FIG18 is a schematic structural diagram of a touch layer of a touch display panel provided by another embodiment of the present invention;

FIG19 is a schematic diagram showing a partial structure of a touch display panel provided by another embodiment of the present invention;

FIG20 is a schematic diagram showing a partial structure of a touch display panel provided by another embodiment of the present invention;

FIG. 21 is a schematic diagram showing the structure of a display device provided in accordance with an embodiment of the present invention.

【Detailed ways】

In order to better understand the technical solution of the present invention, the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

It should be clear that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

It should be understood that the term "and/or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character "/" in this article generally indicates that the associated objects before and after are in an "or" relationship.

FIG1 is a schematic diagram of the structure of a touch display panel provided by an embodiment of the present invention, and FIG2 is a cross-sectional view of the touch display panel along B1-B2 at the Q region in FIG1. As shown in FIG1 and FIG2, the touch display panel includes: a base substrate 1; a driving circuit layer 2 disposed on one side of the base substrate 1; a pixel defining layer 3 disposed on the side of the driving circuit layer 2 away from the base substrate 1, and a plurality of openings 31 penetrating the pixel defining layer 3 are opened in the pixel defining layer 3; a light-emitting layer 4 disposed on the side of the pixel defining layer 3 away from the driving circuit layer 2, and the light-emitting layer 4 includes a plurality of light-emitting units (not shown in FIG1, shown in FIG2) 41 (for example, the light-emitting unit is an organic light-emitting diode, and the organic light-emitting diode includes an anode 411, an organic light-emitting functional layer 412 and a cathode 413 stacked in sequence in a direction away from the base substrate 1, as shown in FIG1, and the cathode 133 of the organic light-emitting diode is a whole layer structure, so that the structure of the display device is simple and the driving is convenient), each light-emitting unit 41 is located in each opening 31; and a touch layer 5 disposed on the side of the light-emitting layer 4 away from the pixel defining layer 3. The touch layer 5 includes a plurality of touch electrodes 51, and a gap 52 (the dotted box portion in FIG. 1 ) is provided between two adjacent touch electrodes 51, wherein the direction in which one touch electrode 51 of the two adjacent touch electrodes 51 points to the other touch electrode 51 is a first direction X, and the superposition direction of each film layer in the touch display panel is a third direction Z. Since the touch layer 5 has certain requirements on the width of the touch electrode 51, the distance between the metal wiring of the touch electrode 51 and the opening of the pixel defining layer 3 is generally very close, that is, the distance between the side of the metal wiring of the touch electrode 51 close to the opening 31 and the side of the opening 31 close to the metal wiring of the touch electrode 51 is equal to the distance between the metal wiring of the touch electrode 51 and the opening 31. The distance between the touch electrodes 51 and the touch driver chip is very close, about 3 to 5 um. However, in actual operation, when the metal traces on the touch layer 5 are aligned and bonded with the metal traces on the touch driver chip, there is often a bonding error, so that the metal traces of the touch electrode 51 in the touch layer 5 are particularly close to the opening 31 area, and even part of the metal traces of the touch electrode 51 will cover part of the pixel opening 31, that is, part of the metal traces of the touch electrode 51 that cover part of the opening 31 will also cover the light-emitting unit 41 located in the opening 31, but the gap 52 between two adjacent touch electrodes 51 will not cover any opening 31, that is, the gap 52 will not cover the light-emitting unit 41. In other words, part of the light-emitting unit 41 located below the touch electrode in the third direction Z is blocked by the touch electrode 51, while part of the light-emitting unit located below the gap will not be blocked. Therefore, when the light-emitting unit located below the gap emits light, a bright line will be formed at the gap, that is, the entire touch display panel generates cross bright lines in the first direction, affecting the display effect.

Therefore, the touch display panel in the embodiment of the present invention further includes: a shielding layer 6 disposed on the side of the touch layer 5 close to the pixel defining layer 3 or on the side away from the pixel defining layer 3; the orthographic projection of the shielding layer 6 on the base substrate 1 at least partially overlaps with the orthographic projection of the slit 52 on the base substrate 1. That is, the shielding layer 6 and the touch electrode 51 completely shield the part of the light-emitting unit located directly under the slit 52, so in the first direction X, there is no area with different display brightness in the entire touch display panel, which avoids the generation of bright lines and improves the display effect.

In one embodiment of the present invention, each touch electrode 51 is a metal grid structure, that is, the material of the touch electrode 51 is a light-shielding material. Since the material of the touch electrode 51 is a light-shielding material, in the first direction X, the brightness of the unshielded display area and the shielded display area at the gap 52 is too different. Therefore, the light-emitting unit portion located directly below the gap 52 is completely blocked to avoid the generation of bright lines in the first direction X.

Specifically, as shown in Figure 3, two adjacent touch electrodes 51 are respectively a first touch electrode 511 and a second touch electrode 512, the pixel defining layer 3 located directly below the first touch electrode 511 is the first pixel defining layer 3-1, and the pixel defining layer 3 located directly below the second touch electrode 512 is the second pixel defining layer 3-2; wherein, the orthographic projection of the first touch electrode 511 on the base substrate 1 partially overlaps with the orthographic projection of the opening 31 on the base substrate 1, and the orthographic projection of the second touch electrode 512 on the base substrate 1 does not overlap with the orthographic projection of the opening 31 on the base substrate 1; the orthographic projection of the shielding layer 6 on the base substrate 1 partially overlaps with the orthographic projection of the first touch electrode 511 on the base substrate 1; the orthographic projection of the shielding layer 6 on the base substrate 1 partially overlaps with the orthographic projection of the second pixel defining layer 3-2 on the base substrate 1.

As also shown in Figure 4, the two adjacent touch electrodes 51 are respectively the first touch electrode 511 and the second touch electrode 512, the pixel defining layer 3 located directly below the first touch electrode 511 is the first pixel defining layer 3-1, and the pixel defining layer 3 located directly below the second touch electrode 512 is the second pixel defining layer 3-2; wherein, the orthographic projection of the first touch electrode 511 on the base substrate 1 has no overlap with the orthographic projection of the opening 31 on the base substrate 1, and the orthographic projection of the second touch electrode 512 on the base substrate 1 partially overlaps with the orthographic projection of the opening 31 on the base substrate 1; the orthographic projection of the shielding layer 6 on the base substrate 1 partially overlaps with the orthographic projection of the first pixel defining layer 3-1 on the base substrate 1, and the orthographic projection of the shielding layer 6 on the base substrate 1 partially overlaps with the orthographic projection of the second touch electrode 512 on the base substrate 1.

As shown in Example 5, two adjacent touch electrodes 51 are respectively a first touch electrode 511 and a second touch electrode 512, the pixel defining layer 3 located directly below the first touch electrode 511 is the first pixel defining layer 3-1, and the pixel defining layer 3 located directly below the second touch electrode 512 is the second pixel defining layer 3-2; wherein, the orthographic projection of the first touch electrode 511 on the base substrate 1 partially overlaps with the orthographic projection of the opening 31 on the base substrate 1, and the orthographic projection of the second touch electrode 512 on the base substrate 1 partially overlaps with the orthographic projection of the opening 31 on the base substrate 1; in the direction in which the pixel defining layer 3 and the touch layer 5 are superimposed, the edge of the shielding layer 6 close to the first touch electrode 511 and the edge of the first touch electrode 511 close to the shielding layer 6 are on the same straight line; in the direction in which the touch layer 5 and the pixel defining layer 3 are superimposed, the edge of the shielding layer 6 close to the second touch electrode 512 and the edge of the second touch electrode 512 close to the shielding layer 6 are on the same straight line.

It should be understood that when the orthographic projection of any one of the first touch electrode 511 and the second touch electrode 512 on the base substrate 1 overlaps with the orthographic projection of the opening 31 on the base substrate 1, the position distribution relationship between the touch electrode 51 whose orthographic projection on the base substrate 1 overlaps with the orthographic projection of the opening 31 on the base substrate 1 and the shielding layer 6 can be as follows:

(1) The orthographic projection of the touch electrode 51 on the base substrate 1 may partially overlap with the orthographic projection of the shielding layer 6 on the base substrate 1 , as shown in FIGS. 3 and 4 ;

(2) In the direction in which the touch layer 5 and the pixel defining layer 3 overlap (i.e., the third direction Z), the edge of the shielding layer 6 close to the touch electrode 51 and the edge of the touch electrode 51 close to the shielding layer 6 are on the same straight line, as shown in FIG. 5 .

Therefore, the embodiment of the present invention does not limit the positional distribution relationship between the touch electrode 51 and the shielding layer 6 whose orthographic projection on the base substrate 1 partially overlaps with the orthographic projection of the opening 31 on the base substrate 1, as long as the orthographic projection of the shielding layer 6 on the base substrate 1 and the orthographic projection of the touch electrode 51 on the base substrate 1 completely cover the orthographic projection of the gap 52 on the base substrate 1.

As another example shown in FIG6 , no matter how many of the touch electrodes 51 between two adjacent first touch electrodes 511 and the second touch electrodes 512 have their orthographic projections on the base substrate 1 partially overlap with the orthographic projections of the opening 31 on the base substrate 1 , the length d1 of the orthographic projection of the shielding layer 6 on the base substrate 1 in the first direction X is greater than or equal to the length d2 of the orthographic projection of the opening 31 on the base substrate 1 in the first direction X, and it can be achieved that the orthographic projection of the shielding layer 6 on the base substrate 1 can completely cover the orthographic projection of the gap 52 on the base substrate 1 .

Optionally, FIG7 shows a partial enlarged view of the touch display panel in the embodiment of the present invention at the same area as the Q area at the position of FIG1. As shown in FIG7, one side of the shielding layer 6 close to the opening 31 is on the same straight line as one side of the touch electrode 51 close to the opening 31; wherein, the overlapping area of the orthographic projection of the touch electrode 51 on the substrate 1 and the orthographic projection of the opening 31 on the substrate 1 is the first orthographic projection, and the length of the first orthographic projection in the second direction Y is the first width L1; the overlapping area of the orthographic projection of the shielding layer 6 on the substrate 1 and the orthographic projection of the opening 31 on the substrate 1 is the second orthographic projection, and the length of the second orthographic projection in the second direction Y is the second width L2; the second width L2 is equal to the first width L1. The embodiment of the present invention ensures that the shielding layer 6 will not block the part of the opening 31 that is not blocked by the touch electrode 51 in the second direction Y, and can also block part of the light-emitting unit located directly below the gap, thereby reducing the probability of bright lines in the first direction X.

Optionally, when the second width L2 is equal to the first width L1, the overlapping area of the orthographic projection of the blocking layer 6 on the substrate and the orthographic projection of the gap 52 on the substrate is a third orthographic projection, wherein the length of the third orthographic projection in the second direction Y is a third length L3, and L3 may be equal to L1, as shown in FIG8 ; L3 may also be greater than L1, as shown in FIG7 or FIG9 .

Optionally, when L3 is greater than L2, as shown in FIG9 , the length of the gap 52 in the second direction Y is a fourth width L4, wherein L3 may be equal to L4, that is, one side of the shielding layer 6 close to the opening 31 and one side of the touch electrode 51 close to the opening 31 are in a straight line and always maintain a consistent width, then no matter how the touch electrode 51 covers the pixel opening, there will be no bright line in the first direction X.

Optionally, when each touch electrode 51 is a metal grid structure, that is, the material of the touch electrode 51 is a shading material, since the material of the touch electrode 51 is a shading material, the material of the shielding layer 6 is the same as the material of the touch electrode 51, so that the shading effect of the shielding layer on the part of the light-emitting units located under the gap is equal to the shading effect of the touch electrode on the part of the light-emitting units located under the touch electrode, further avoiding the generation of bright lines in the first direction X.

In another embodiment of the present invention, the material of the shielding layer 6 may also be a light shielding layer, and the material of the light shielding layer may be a black light shielding material.

When the shading material is a black shading material, FIG10 shows a local enlarged view of the touch display panel in an embodiment of the present invention at the same area as the Q area at the position in FIG1 . As shown in FIG10 , the orthographic projection of the blocking layer 6 on the base substrate 1 completely covers the orthographic projection of the two adjacent touch electrodes 51 on the base substrate 1 and the orthographic projection of the gap 52 on the base substrate 1 , that is, the touch electrode 51 and the gap 52 between the two adjacent touch electrodes 51 are covered with a layer of black shading material. No matter how large the overlapping part of the projection of the touch electrode 51 on the base substrate 1 and the projection of the opening 31 on the base substrate 1 is, the generation of bright lines in the first direction X can be avoided, thereby improving the display effect.

Optionally, similarly, as shown in Figure 10, one side of the shielding layer 6 close to the opening 31 is on the same straight line as one side of the touch electrode 51 close to the opening 31; wherein, the overlapping area of the orthographic projection of the touch electrode 51 on the base substrate 1 and the orthographic projection of the opening 31 on the base substrate 1 is the first orthographic projection, and the length of the first orthographic projection in the second direction Y is the first width L1; the overlapping area of the orthographic projection of the shielding layer 6 on the base substrate 1 and the orthographic projection of the opening 31 on the base substrate 1 is the second orthographic projection, and the length of the second orthographic projection in the second direction Y is the second width L2; the second width L2 is equal to the first width L1; so that the shielding layer 6 will not block the part of the opening 31 that is not blocked by the touch electrode 51 in the second direction Y, and can also completely block part of the light-emitting units directly below the gap, so that there will be no bright line in the first direction X.

Optionally, when the second width L2 is equal to the first width L1, the overlapping area of the orthographic projection of the blocking layer 6 on the substrate and the orthographic projection of the gap 52 on the substrate is a third orthographic projection, wherein the length of the third orthographic projection in the second direction Y is a third length L3, and L3 may be equal to L1, as shown in FIG10 ; L3 may also be greater than L1, as shown in FIGS. 11 and 12 .

When L3 is greater than L1, as shown in FIG12 , the length of the gap 52 in the second direction Y is a fourth width L4, wherein L3 may be equal to L4, that is, a side edge of the shielding layer 6 close to the opening 31 and a side edge of the touch electrode 51 close to the opening 31 are in a straight line and always maintain a consistent width, then no matter how the touch electrode 51 covers the pixel opening, there will be no bright line in the first direction X.

In another embodiment of the present invention, the shielding layer 6 can be located on the side of the touch layer 5 away from the pixel defining layer 3, as shown in Figures 2 to 6; or it can be located on the side of the touch layer 5 close to the pixel defining layer 3, as shown in Figures 13 and 14.

Specifically, as shown in Figure 13, the touch display panel also includes an encapsulation layer 8 arranged between the light-emitting layer 4 and the touch layer, wherein the encapsulation layer 8 includes a first inorganic layer 81, a first organic layer 82 and a second inorganic layer 83 which are sequentially stacked on a side of the light-emitting layer 4 away from the pixel defining layer.

Optionally, the shielding layer 6 can be arranged between the first inorganic layer 81 and the first organic layer 82. When the material of the shielding layer 6 is the same as the material of the touch electrode 51, that is, the material of the shielding layer 6 is a metal material, the shielding layer 6 can also absorb water and oxygen to prevent water and oxygen from penetrating into the light-emitting layer 4.

Optionally, the blocking layer 6 can also be arranged between the encapsulation layer 8 and the touch layer, as shown in Figure 14. In this case, when the material of the blocking layer 6 is the same as that of the touch electrode 51, the touch display panel also includes an insulating layer 7 arranged between the blocking layer 6 and the touch layer 5.

Similarly, the touch display panel may further include a cover layer disposed on the touch layer 5 away from the base substrate 1. Then the shielding layer may also be disposed on the same layer as one of the film layers in the cover layer. Alternatively, the existing film layers in the touch display panel may be fully utilized without the need to separately provide a separate film layer, thereby reducing the thickness of the touch display panel and facilitating the realization of ultra-thinness.

It should be understood that since part of the touch electrodes 51 and the shielding layer 6 will shield part of the light-emitting unit located directly below them, the shielding layer must be located on the side of the light-emitting unit 41 away from the base substrate 1. For example, the shielding layer 6 can be arranged between the touch layer 5 and the encapsulation layer 8, or between the touch layer 5 and the light-emitting layer 4. Therefore, the embodiment of the present invention does not limit the positional relationship between the shielding layer 6 and the touch electrodes 51 in the third direction and the specific position of the shielding layer 6, as long as the shielding layer 6 is located on the side of the light-emitting unit 41 away from the base substrate 1.

In one embodiment of the present invention, FIG. 15 is a top view of a touch layer in a touch display panel in the embodiment of the present invention. As shown in FIG. 15 , a plurality of touch electrodes 51 are distributed in an array; wherein, the plurality of touch electrodes 51 are divided into a plurality of drive touch electrodes 55 arranged in an array and a plurality of sense touch electrodes 54 arranged in an array, and the array of drive touch electrodes 55 and the array of sense touch electrodes 54 are arranged at intervals; along the row direction of the array, two adjacent drive touch electrodes 55 are connected by connecting electrodes 57 to form a plurality of drive touch electrode groups extending along the row direction and arranged along the column direction; along the column direction of the array, two adjacent sense touch electrodes 54 are electrically connected by bridging electrodes 58 to form a plurality of sense touch electrode groups extending along the column direction and arranged along the row direction, that is, the working principle of the touch electrode 51 in the embodiment of the present application is the mutual capacitance working principle.

Specifically, when each touch electrode 51 is a mesh structure, that is, the touch electrode 51 is prepared by the Metal Mesh method, FIG16 is a partial enlarged view of the F region in the touch layer shown in FIG15. As shown in FIG16, the driving touch electrode 55 may have a mesh shape of a touch opening 551, and the driving touch electrode 55 includes a plurality of first branch portions 552 and a plurality of second branch portions 553, wherein the touch opening 551 is defined by the first branch portions 552 and the second branch portions 553, so that the driving touch electrode 55 has a mesh structure. Similarly, the sensing touch electrode 54 may have a mesh shape of a touch opening 541, and the sensing touch electrode 54 includes a plurality of third branch portions 542 and a plurality of fourth branch portions 543, wherein the touch opening 541 is defined by the third branch portions 542 and the fourth branch portions 543, so that the sensing touch electrode 54 has a mesh structure.

Optionally, FIG17 is a cross-sectional view of the F region in FIG15 along A-A. As shown in FIG17 , the driving touch electrodes 55, the sensing touch electrodes 54 and the connecting electrodes 57 are located in the same layer, and the bridging electrodes 58 and the sensing touch electrodes 54 are located in different layers.

In another embodiment of the present invention, as shown in Figure 18, the multiple touch electrodes 51 include: a plurality of self-capacitance touch electrodes 59 arranged in an array; the touch layer 5 also includes: a plurality of touch traces 50, and the plurality of touch traces 50 are arranged and connected to the plurality of self-capacitance touch electrodes 59 in a one-to-one correspondence, that is, the working principle of the touch electrode 51 in the embodiment of the present application is the self-capacitance working principle.

Although the shielding layer 6 on the side of the touch layer 5 close to the pixel defining layer 3 or away from the pixel defining layer 3 can avoid the generation of bright lines, the display effect is improved. However, not every situation can be avoided 100%. Therefore, in another embodiment of the present invention, as shown in FIG19, a gap 52 is provided between any two adjacent touch electrodes 51 in a plurality of touch electrodes 51 distributed in a first array, and a plurality of gaps 52 are distributed in a second array; wherein, in the row direction of the second array, a first connecting line connects the centers of every two adjacent gaps 52, and the first connecting line is distributed periodically, and the shape of the first connecting line in one period is a broken line as shown in FIG20; or the shape of the first connecting line in one period is a curve. The embodiment of the present invention can improve the display effect by distributing the bright lines of each gap 52 that cannot be avoided 100% in a periodic manner and making the center connecting line of the bright lines in one period a broken line or a curve.

Optionally, the line segments of the first connecting line in two adjacent periods are respectively the first line segment and the second line segment;

Each gap 52 connected by the second line segment is rotated by a first angle relative to each gap 52 connected by the first line segment, as shown in FIG. 20 .

As a second aspect of the present invention, an embodiment of the present invention provides a display device, including the above-mentioned touch display panel 300, as shown in FIG21. The specific structure and principle of the touch display panel 300 are the same as those in the above-mentioned embodiment, and are not described in detail here. The display device can be any electronic device with a display function, such as a touch display screen, a mobile phone, a tablet computer, a laptop computer, an e-book, or a television.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims (16)

1. A touch display panel, comprising: substrate substrate; A driving circuit layer disposed on one side of the base substrate; A pixel defining layer is arranged on a side of the driving circuit layer away from the base substrate, wherein a plurality of openings penetrating the pixel defining layer are formed in the pixel defining layer; A light emitting layer disposed on a side of the pixel defining layer away from the driving circuit layer, the light emitting layer comprising a plurality of light emitting units, each of the light emitting units being located in each of the openings; and A touch layer disposed on a side of the light emitting layer away from the pixel defining layer; The touch layer includes a plurality of touch electrodes, a gap is provided between two adjacent touch electrodes, the extending direction of the gap from one touch electrode of the two adjacent touch electrodes to the other touch electrode is a first direction, and the orthographic projection of at least one touch electrode of the two adjacent touch electrodes on the base substrate partially overlaps with the orthographic projection of the opening on the base substrate; as well as A shielding layer disposed on a side of the touch layer close to the pixel defining layer or a side away from the pixel defining layer; In the first direction, the orthographic projection of the blocking layer on the base substrate covers the orthographic projection of the gap on the base substrate; in the second direction, the orthographic projection of the blocking layer on the base substrate at least partially overlaps with the orthographic projection of the gap on the base substrate, and the second direction is located in the same plane as the first direction, and the second direction is perpendicular to the first direction. 2 . The touch display panel according to claim 1 , wherein each of the touch electrodes is a grid structure. 3 . 3. The touch display panel according to claim 2, characterized in that: The two adjacent touch electrodes are respectively a first touch electrode and a second touch electrode; The orthographic projection of the first touch electrode on the base substrate partially overlaps with the orthographic projection of the opening on the base substrate, and the orthographic projection of the second touch electrode on the base substrate does not overlap with the orthographic projection of the opening on the base substrate; The orthographic projection of the shielding layer on the base substrate partially overlaps with the orthographic projection of the first touch electrode on the base substrate; The orthographic projection of the shielding layer on the base substrate partially overlaps with the orthographic projection of the pixel defining layer located directly below the second touch electrode on the base substrate. 4. The touch display panel according to claim 2, characterized in that: The two adjacent touch electrodes are respectively a first touch electrode and a second touch electrode; The orthographic projection of the first touch electrode on the base substrate overlaps with the orthographic projection of the opening on the base substrate, and the orthographic projection of the second touch electrode on the base substrate overlaps with the orthographic projection of the opening on the base substrate; In the direction in which the pixel defining layer and the touch layer overlap, an edge of the shielding layer close to the first touch electrode and an edge of the first touch electrode close to the shielding layer are on the same straight line; In the direction in which the touch layer and the pixel defining layer overlap, an edge of the shielding layer close to the second touch electrode and an edge of the second touch electrode close to the shielding layer are on the same straight line. 5. The touch display panel according to claim 2, characterized in that: A length of an orthographic projection of the shielding layer on the base substrate in the first direction is greater than or equal to a length of an orthographic projection of the opening on the base substrate in the first direction. 6. The touch display panel according to claim 2, characterized in that: A side edge of the shielding layer close to the opening is in the same straight line as a side edge of the touch electrode close to the opening; Wherein, an overlapping area of the orthographic projection of the touch electrode on the base substrate and the orthographic projection of the opening on the base substrate is a first orthographic projection, and a length of the first orthographic projection in the second direction is a first width; The overlapping area of the orthographic projection of the shielding layer on the base substrate and the orthographic projection of the opening on the base substrate is a second orthographic projection, and the length of the second orthographic projection in the second direction is a second width; The second width is less than or equal to the first width; The second direction is perpendicular to the direction in which the pixel defining layer and the touch layer overlap. 7 . The display panel according to claim 3 , wherein a material of the shielding layer is the same as a material of the touch electrode. 8. The touch display panel according to claim 1, characterized in that: The orthographic projection of the shielding layer on the base substrate completely covers the orthographic projections of two adjacent touch electrodes on the base substrate and the orthographic projection of the gap on the base substrate. 9. The touch display panel according to claim 8, characterized in that: A side edge of the shielding layer close to the opening is in the same straight line as a side edge of the touch electrode close to the opening; Wherein, an overlapping area of the orthographic projection of the touch electrode on the base substrate and the orthographic projection of the opening on the base substrate is a first orthographic projection, and a length of the first orthographic projection in the second direction is a first width; The overlapping area of the orthographic projection of the shielding layer on the base substrate and the orthographic projection of the opening on the base substrate is a second orthographic projection, and the length of the second orthographic projection in the second direction is a second width; The second width is less than or equal to the first width; The second direction is perpendicular to the direction in which the pixel defining layer and the touch layer overlap. 10 . The touch display panel according to claim 8 , wherein the shielding layer is made of a black light shielding material. 11. The touch display panel according to claim 1, characterized in that: A gap is provided between any two adjacent touch electrodes among the plurality of touch electrodes distributed in the first array, and the plurality of the gaps are distributed in the second array; In the row direction of the second array, the first connecting line connects the centers of every two adjacent slots, the first connecting lines are distributed periodically, and the shape of the first connecting lines in one period is a broken line or a curve. 12. The touch display panel according to claim 11, wherein the line segments of the first connecting line in two adjacent periods are respectively a first line segment and a second line segment; Each gap connected by the second line segment is rotated by a first angle relative to each gap connected by the first line segment. 13. The touch display panel according to claim 1, wherein the plurality of touch electrodes are distributed in an array; The plurality of touch electrodes are divided into a plurality of drive touch electrodes arranged in an array and a plurality of sense touch electrodes arranged in an array, and the drive touch electrode array and the sense touch electrode array are arranged at intervals; Along the row direction of the array, two adjacent driving touch control electrodes are connected by a connecting electrode to form a plurality of driving touch control electrode groups extending along the row direction and arranged along the column direction; Along the column direction of the array, two adjacent touch sensing electrodes are electrically connected via a bridging electrode to form a plurality of touch sensing electrode groups extending along the column direction and arranged along the row direction. 14. The touch display panel according to claim 13, characterized in that: The driving touch electrodes, the sensing touch electrodes and the connecting electrodes are located in the same layer, and the bridging electrodes and the sensing touch electrodes are located in different layers; Wherein, the shielding layer and the bridging electrode are arranged in the same layer. 15. The touch display panel according to claim 1, characterized in that: The plurality of touch electrodes include: a plurality of self-capacitance touch electrodes arranged in an array; The touch layer further includes: A plurality of touch lines are provided and connected in a one-to-one correspondence with the plurality of self-capacitive touch electrodes. 16. A display device, characterized by comprising the touch display panel according to any one of claims 1 to 15.