Touch display panel and display device

Abstract

The present disclosure provides a touch display panel and a display device. The touch display panel comprises: a base substrate; a pixel defining layer located on one side of the base substrate, wherein the pixel defining layer defines a plurality of sub-pixels located in a display area; and a first touch metal layer located on the side of the pixel defining layer facing away from the base substrate, wherein the first touch metal layer comprises a plurality of metal grid lines intersecting with each other, the orthographic projection of each metal grid line on the base substrate at least partially overlaps the orthographic projection of the pixel defining layer on the base substrate, the plurality of metal grid lines comprise first metal grid lines, the first metal grid lines also function as a first light shielding layer, and the width of the first light shielding layer is 0.6-1.2 times the width of the pixel defining layer at a corresponding position.

Description

Touch display panel and display device TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of display, and in particular, to a touch display panel and a display device. BACKGROUND

[0002] With the continuous development of electronic technology, electronic devices such as mobile phones and computers have gradually become common tools in people's daily life and work.

[0003] In the process of using the electronic device, the user can browse the corresponding information through the screen of the electronic device. However, since the visual angle range of the display module in some electronic devices is large, in some cases, the information browsed by the user may be snooped or interfered with by others.

[0004] A variety of display modules capable of realizing the anti-peeping function are proposed in the related art, but the display module in the related art has a complex structure, a large product thickness, and a high manufacturing cost when realizing the anti-peeping function.

[0005] SUMMARY

[0006] The present disclosure provides a touch display panel and a display device, and the specific solutions are as follows:

[0007] The present disclosure provides a touch display panel, which comprises a display area, and the touch display panel comprises:

[0008] a substrate substrate;

[0009] a pixel definition layer located on one side of the substrate substrate, the pixel definition layer defining a plurality of sub-pixels located in the display area;

[0010] a first touch metal layer located on the side of the pixel definition layer away from the substrate substrate; the first touch metal layer comprises a plurality of metal mesh lines arranged in cross, and the orthographic projection of each metal mesh line on the substrate substrate and the orthographic projection of the pixel definition layer on the substrate substrate at least partially overlap; wherein the plurality of metal mesh lines comprise a first metal mesh line, the first metal mesh line is multiplexed as a first light shielding layer, and the width of the first light shielding layer is 0.6-1.2 times the width of the pixel definition layer at the corresponding position.

[0011] In a possible implementation, in the above-mentioned touch display panel provided by the present disclosure, the width of the first light shielding layer is 0.8-1.1 times the width of the pixel definition layer at the corresponding position.

[0012] In a possible implementation, in the touch display panel provided by the embodiment of the present disclosure, the center line of the orthogonal projection of the metal grid line on the substrate substrate coincides with the center line of the orthogonal projection of the pixel defining layer at the corresponding position on the substrate substrate.

[0013] In a possible implementation, in the touch display panel provided by the embodiment of the present disclosure, further comprising: a second touch metal layer located between the first touch metal layer and the pixel defining layer, and a touch insulating layer located between the first touch metal layer and the second touch metal layer;

[0014] The second touch metal layer comprises a plurality of metal grid lines arranged in a cross shape, the center line of the orthogonal projection of the metal grid line of the second touch metal layer on the substrate substrate coincides with the center line of the orthogonal projection of the metal grid line of the first touch metal layer at the corresponding position on the substrate substrate; wherein the metal grid line of the second touch metal layer at the corresponding position of the first light shielding layer is multiplexed as a second light shielding layer, and the width of the second light shielding layer is 0.6-1.2 times the width of the pixel defining layer at the corresponding position.

[0015] In a possible implementation, in the touch display panel provided by the embodiment of the present disclosure, the width of the second light shielding layer is 0.8-1.1 times the width of the pixel defining layer at the corresponding position.

[0016] In a possible implementation, in the touch display panel provided by the embodiment of the present disclosure, the width of the first light shielding layer is less than or equal to the width of the second light shielding layer.

[0017] In a possible implementation, in the touch display panel provided by the embodiment of the present disclosure, the plurality of metal grid lines of the second touch metal layer form a plurality of bridge electrodes, the plurality of metal grid lines of the first touch metal layer form a plurality of first touch electrodes arranged along a first direction and a plurality of second touch electrodes arranged along a second direction, and the first direction intersects the second direction.

[0018] The first touch electrode comprises a plurality of first electrode blocks arranged along the second direction, and adjacent two first electrode blocks are electrically connected to the corresponding bridge electrode through a via hole penetrating the touch insulating layer; the second touch electrode comprises a plurality of second electrode blocks arranged along the first direction, and adjacent two second electrode blocks are directly electrically connected.

[0019] The plurality of metal grid lines of the second touch metal layer further form a virtual electrode, the virtual electrode is arranged in insulation with the bridge electrode, and the virtual electrode is arranged at the corresponding position of each first electrode block and each second electrode block.

[0020] The metal grid lines of the second touch metal layer corresponding to the position of the first light shielding layer include: metal grid lines forming the virtual electrodes, and / or metal grid lines forming the bridge electrodes.

[0021] In a possible implementation, in the touch display panel provided by the embodiments of the present disclosure, the display area includes a first display area and a second display area.

[0022] The plurality of metal grid lines of the first touch metal layer further include second metal grid lines located in the first display area, and a width of each of the second metal grid lines is less than 0.6 times the width of the pixel defining layer at the corresponding position.

[0023] In the second display area, each of the metal grid lines of the first touch metal layer extending along the first direction is the first metal grid line.

[0024] In a possible implementation, in the touch display panel provided by the embodiments of the present disclosure, in the second display area, each of the metal grid lines of the first touch metal layer extending along the second direction is the second metal grid line.

[0025] In a possible implementation, in the touch display panel provided by the embodiments of the present disclosure, in the second display area, each of the metal grid lines of the first touch metal layer extending along the second direction is the first metal grid line.

[0026] In a possible implementation, in the touch display panel provided by the embodiments of the present disclosure, the first display area and the second display area are arranged along the first direction.

[0027] In a possible implementation, in the touch display panel provided by the embodiments of the present disclosure, the first display area and the second display area are alternately arranged along the first direction and the second direction.

[0028] In a possible implementation, in the touch display panel provided by the embodiments of the present disclosure, the plurality of metal grid lines of the first touch metal layer further include third metal grid lines located at the junction of the first display area and the second display area, the third metal grid lines are divided into a first part and a second part along a center line of the pixel defining layer at the corresponding position, the center line of the pixel defining layer is parallel to the junction line of the first display area and the second display area, the first part is located in the first display area, the second part is located in the second display area, a width of the first part is less than 0.6 times half the width of the pixel defining layer at the corresponding position, and a width of the second part is 0.6-1.2 times half the width of the pixel defining layer at the corresponding position.

[0029] In a possible implementation, in the touch display panel provided by the embodiment of the present disclosure, at least one of the first electrode blocks in the first display area is electrically connected to the corresponding virtual electrode through a via hole penetrating the touch insulation layer, and at least one of the second electrode blocks in the first display area is electrically connected to the corresponding virtual electrode through a via hole penetrating the touch insulation layer.

[0030] In a possible implementation, in the touch display panel provided by the embodiment of the present disclosure, the thickness of the second metal grid line is greater than the thickness of the first metal grid line.

[0031] In a possible implementation, in the touch display panel provided by the embodiment of the present disclosure, the touch display panel further comprises a pad layer located between the second display area and the touch insulation layer and the first touch metal layer.

[0032] In a possible implementation, in the touch display panel provided by the embodiment of the present disclosure, the surface of the first metal grid line away from the substrate substrate is uneven.

[0033] In a possible implementation, in the touch display panel provided by the embodiment of the present disclosure, the metal grid line comprises a first metal line, a second metal line and a third metal line stacked in the direction away from the substrate substrate, the material of the first metal line and the third metal line comprises Ti, and the material of the second metal line comprises Al.

[0034] In a possible implementation, in the touch display panel provided by the embodiment of the present disclosure, the first metal line of the first metal grid line is multiplexed as the first light shielding layer.

[0035] In a possible implementation, in the touch display panel provided by the embodiment of the present disclosure, the third metal line of the first metal grid line is multiplexed as the first light shielding layer.

[0036] In a possible implementation, in the touch display panel provided by the embodiment of the present disclosure, the second metal line of the first metal grid line is multiplexed as the first light shielding layer.

[0037] In a possible implementation, in the touch display panel provided by the embodiment of the present disclosure, the third metal line of the first metal grid line is uneven on the surface away from the substrate substrate.

[0038] In a possible implementation, in the touch display panel provided by the embodiment of the present disclosure, the surface of the touch insulation layer away from the substrate substrate is uneven.

[0039] In a possible implementation, in the touch display panel provided by the embodiment of the present disclosure, a black matrix and a filter layer are further included on the side of the first touch metal layer away from the substrate, the black matrix includes a plurality of openings corresponding to the sub-pixels, and the filter layer includes a plurality of color filters, each of the color filters covering a corresponding opening.

[0040] In a possible implementation, in the touch display panel provided by the embodiment of the present disclosure, the width of the black matrix is the same as the width of the metal grid line at the corresponding position.

[0041] In a possible implementation, in the touch display panel provided by the embodiment of the present disclosure, the black matrix is in direct contact with the first touch metal layer.

[0042] In a possible implementation, in the touch display panel provided by the embodiment of the present disclosure, a protective layer is further included between the black matrix and the first touch metal layer.

[0043] In a possible implementation, in the touch display panel provided by the embodiment of the present disclosure, a lens layer is further included in the second display area and between the protective layer and the first touch metal layer.

[0044] The lens layer includes lenses covering each of the sub-pixels in the second display area, the lenses have a projection boundary on the substrate within the projection range of the first metal grid line on the substrate, and the refractive index of the lens layer is greater than the refractive index of the protective layer.

[0045] In a possible implementation, in the touch display panel provided by the embodiment of the present disclosure, a lens layer is further included in the second display area and between the protective layer and the first touch metal layer.

[0046] The lens layer includes lenses covering each of the first metal grid lines in the second display area, the lenses have a projection boundary on the substrate outside the projection range of the first metal grid line on the substrate, and the refractive index of the lens layer is less than the refractive index of the protective layer.

[0047] In a possible implementation, in the touch display panel provided by the embodiment of the present disclosure, a lens layer is further included between the protective layer and the first touch metal layer.

[0048] The lens layer includes first lenses covering each of the metal grid lines in the display area and second lenses covering at least part of the sub-pixels in the second display area, a projection boundary of the first lenses on the substrate substrate is located outside a projection range of the metal grid lines on the substrate substrate, a projection of the second lenses on the substrate substrate covers a central region of the sub-pixels, and a refractive index of the lens layer is less than a refractive index of the protective layer.

[0049] In a possible implementation, in the above-mentioned touch display panel provided by the embodiments of the present disclosure, further comprising: a driving circuit layer located between the substrate substrate and the pixel defining layer; an anode located between the driving circuit layer and the pixel defining layer and arranged corresponding to the sub-pixels; a light-emitting layer located between the pixel defining layer and the second touch metal layer; a cathode located between the light-emitting layer and the second touch metal layer; and an encapsulation layer located between the cathode and the second touch metal layer.

[0050] Correspondingly, the embodiments of the present disclosure further provide a touch display panel, comprising a display area, the display area comprising a plurality of sub-pixels, the display area being divided into a first display area and a second display area;

[0051] The touch display panel comprises:

[0052] a substrate substrate;

[0053] a light-emitting layer located on one side of the substrate substrate, the light-emitting layer comprising a light-emitting structure corresponding to each of the sub-pixels;

[0054] an encapsulation layer located on a side of the light-emitting layer away from the substrate substrate;

[0055] a first touch metal layer located on a side of the encapsulation layer away from the substrate substrate; the first touch metal layer comprising: a plurality of first metal grid lines arranged in a cross manner in the second display area, and a plurality of second metal grid lines arranged in a cross manner in the first display area; wherein a width of the first metal grid lines is greater than a width of the second metal grid lines.

[0056] In a possible implementation, in the above-mentioned touch display panel provided by the embodiments of the present disclosure, further comprising a pixel defining layer located between the substrate substrate and the light-emitting layer, the pixel defining layer defining the plurality of sub-pixels, a projection of the first metal grid lines and the second metal grid lines on the substrate substrate at least partially overlaps with a projection of the pixel defining layer on the substrate substrate, and a width of the first metal grid lines is 0.6-1.2 times a width of the pixel defining layer at a corresponding position.

[0057] In a possible implementation, in the touch display panel provided by the embodiment of the present disclosure, the touch display panel further comprises a second touch metal layer between the first touch metal layer and the encapsulation layer, and the second touch metal layer comprises a plurality of metal mesh lines arranged in a cross manner.

[0058] The width of the metal mesh line in the second touch metal layer and located in the first display area is the same as the width of the second metal mesh line at the corresponding position.

[0059] The width of the metal mesh line in the second touch metal layer and located in the second display area is less than or equal to the width of the first metal mesh line at the corresponding position, and greater than the width of the second metal mesh line.

[0060] In a possible implementation, in the touch display panel provided by the embodiment of the present disclosure, the first display area and the second display area are arranged along a first direction, or the first display area and the second display area are alternately arranged along the first direction and a second direction, and the first direction intersects the second direction.

[0061] Correspondingly, the embodiment of the present disclosure further provides a display device comprising the above touch display panel provided by the embodiment of the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0062] FIG. 1 is a structure of an OLED privacy display panel provided in the related art;

[0063] FIG. 2 is a plan view of a touch display panel;

[0064] FIG. 3 is a cross-sectional view of FIG. 2 along the direction of CC';

[0065] FIG. 4 is another cross-sectional view of FIG. 2 along the direction of CC';

[0066] FIG. 5 is a cross-sectional view of part of the film layers of FIG. 2 along the direction of DD';

[0067] FIG. 6 is another cross-sectional view of part of the film layers of FIG. 2 along the direction of CC';

[0068] FIG. 7 is a cross-sectional view of part of the film layers of FIG. 2 along the direction of DD';

[0069] FIG. 8 is a partial view of a grid structure in which the first electrode blocks are arranged around the sub-pixels;

[0070] FIG. 9 is a plan view of the metal mesh lines 31 in the display area AA of FIG. 2;

[0071] FIG. 10 is another plan view of the metal mesh lines 31 in the display area AA of FIG. 2;

[0072] Fig. 11 is a further plan view of the metal grid lines 31 in the display area AA of Fig. 2;

[0073] Fig. 12 is a further plan view of the metal grid lines 31 in the display area AA of Fig. 2;

[0074] Fig. 13 is a sectional view along the direction EE' of one of the embodiments of Figs. 9 to 12;

[0075] Fig. 14 is a further sectional view along the direction EE' of Figs. 9 to 12;

[0076] Fig. 15 is a further sectional view along the direction EE' of Figs. 9 to 12;

[0077] Fig. 16 is a further sectional view along the direction EE' of Figs. 9 to 12;

[0078] Fig. 17 is a further sectional view along the direction EE' of Figs. 9 to 12;

[0079] Fig. 18 is a further sectional view along the direction EE' of Figs. 9 to 12;

[0080] Fig. 19 is a further sectional view along the direction EE' of Figs. 9 to 12;

[0081] Fig. 20 is a further sectional view along the direction EE' of Figs. 9 to 12;

[0082] Fig. 21 is a further sectional view along the direction EE' of Figs. 9 to 12;

[0083] Fig. 22 is a further sectional view along the direction EE' of Figs. 9 to 12;

[0084] Fig. 23 is a further sectional view along the direction EE' of Figs. 9 to 12;

[0085] Fig. 24 is a further sectional view along the direction EE' of Figs. 9 to 12;

[0086] Fig. 25 is a further sectional view along the direction EE' of Figs. 9 to 12;

[0087] Fig. 26 is a further sectional view along the direction EE' of Figs. 9 to 12;

[0088] Fig. 27 is a further sectional view along the direction EE' of Figs. 9 to 12;

[0089] Fig. 28 is a further sectional view along the direction EE' of Figs. 9 to 12;

[0090] Fig. 29 is a sectional view along the direction CC' of the detailed structure of Fig. 2;

[0091] FIG. 30 is a plan view of a display device according to an embodiment of the disclosure. DETAILED DESCRIPTION

[0092] In order to make the objects, technical solutions and advantages of the embodiments of the disclosure clearer, the technical solutions of the embodiments of the disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the disclosure. Obviously, the described embodiments are part of, rather than all of, the embodiments of the disclosure. And the embodiments in the disclosure and the features in the embodiments can be combined with each other without conflict. Based on the described embodiments of the disclosure, all other embodiments obtained by a person of ordinary skill in the art without creative effort fall within the protection scope of the disclosure.

[0093] Unless otherwise defined, technical terms or scientific terms used in the disclosure should be understood as the usual meaning understood by a person with ordinary skills in the art to which the disclosure belongs. The similar words such as “comprise” or “include” and the like used in the disclosure mean that the elements or objects before the words cover the elements or objects listed after the words and their equivalents, without excluding other elements or objects. The similar words such as “connect” or “connected” are not limited to physical or mechanical connection, but can include electrical connection, whether direct or indirect. “In”, “out”, “up”, “down”, and the like are only used to indicate relative positional relationship, and when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0094] It should be noted that the size and shape of each figure in the drawings do not reflect the true proportion, but only illustrate the content of the disclosure. And the same or similar reference signs represent the same or similar elements or elements with the same or similar functions throughout.

[0095] An organic light-emitting diode (OLED) display panel has many advantages such as self-emission, ultra-thin, fast response, high contrast, wide viewing angle, etc., and is a kind of display panel that is currently widely concerned. The OLED display panel usually adopts a thin film encapsulation structure (TFE) of inorganic layer-organic layer-inorganic layer to realize encapsulation, so as to encapsulate the organic light-emitting material inside the display panel, so as to achieve the purpose of blocking water and oxygen, and realize the protection of the organic light-emitting material.

[0096] In order to realize touch display of the OLED display panel, a touch structure is usually directly manufactured on the TFE film layer of the OLED display panel, that is, a flexible multi-layer on cell (FMLOC) touch technology, which can be used to prepare a lighter and thinner display device, and the technology can be applied to a folding and rolling OLED display device.

[0097] At present, in order to protect personal privacy or not to interfere with others, an OLED privacy display product is proposed in the related art, which needs to set at least one light shielding layer on the TFE film layer of the display panel to adjust the light emitting angle and achieve the effect of narrow viewing angle privacy. As shown in FIG. 1, which is a structure of an OLED privacy display panel provided in the related art, it includes a substrate 10, and a driving circuit layer 20, a pixel defining layer 30, a light emitting layer 40, an encapsulation layer 50, a touch layer 60, a first light shielding layer 70, a protection layer 80 and a second light shielding layer 90 which are sequentially stacked on the substrate 10. The first light shielding layer 70 and the second light shielding layer 90 generally use black resin material (BM), that is, after the encapsulation layer 50 and the touch layer 60 of the display panel are manufactured, a patterning process of the light shielding layer needs to be additionally performed, which increases the process cost, and the film layer thickness will be larger, which is not conducive to the lightness and thinness of the display panel.

[0098] The embodiment of the present disclosure provides a touch display panel, as shown in FIG. 2 and FIG. 3, FIG. 2 is a plan view of the touch display panel, and FIG. 3 is a cross-sectional view of the touch display panel along the direction of CC' in FIG. 2. The touch display panel includes a display area AA, and the touch display panel includes:

[0099] a substrate 1;

[0100] a pixel defining layer 2 located on one side of the substrate 1, the pixel defining layer 2 defining a plurality of sub-pixels located in the display area AA;

[0101] a first touch metal layer 3 located on a side of the pixel defining layer 2 away from the substrate 1; the first touch metal layer 3 includes a plurality of metal mesh lines 31 arranged in a cross shape, and a projection of each metal mesh line 31 on the substrate 1 at least partially overlaps with a projection of the pixel defining layer 2 on the substrate 1, that is, each metal mesh line 31 is arranged around the sub-pixel; wherein the plurality of metal mesh lines 31 includes a first metal mesh line 311, the first metal mesh line 311 is multiplexed as a first light shielding layer, and the width of the first light shielding layer is 0.6-1.2 times the width of the pixel defining layer 2 at the corresponding position. The drawings of the present disclosure are schematic drawings in which the width of the first light shielding layer is greater than the width of the pixel defining layer 2 at the corresponding position, for example, the width of the first light shielding layer is 1.1 times the width of the pixel defining layer 2 at the corresponding position.

[0102] The above-mentioned touch display panel provided by the embodiments of the present disclosure is generally made of light-proof metal material, the first metal grid line of the first touch metal layer is reused as the first light shielding layer, on the one hand, by reasonably setting the width of the first metal grid line, part of the light with large angle emitted from the sub-pixel is blocked by the first metal grid line, thereby the light emitting angle range (indicated by the arrow) of the touch display panel can be reduced, so that the touch display panel realizes the privacy protection function; on the other hand, the first metal grid line of the first touch metal layer is reused as the first light shielding layer, which avoids forming a light shielding layer specially used for light shielding in the touch display panel, reduces the number of film layers inside the touch display panel, optimizes the internal structure of the touch display panel, and while realizing the privacy protection function, the process is simplified, the overall thickness of the panel is reduced, the panel is thinned, and the cost is reduced.

[0103] Specifically, the width of the first metal grid line 311 (the first light shielding layer) is set to 0.6-1.2 times the width of the pixel defining layer 2 at the corresponding position, because if it is less than 0.6 times, the light emitting angle is too large to affect the privacy protection effect, and if it is greater than 1.2 times, the light emitting efficiency will be affected and the display brightness will be reduced.

[0104] In some embodiments, in the above-mentioned touch display panel provided by the embodiments of the present disclosure, as shown in FIG. 3, the width of the first metal grid line 311 (the first light shielding layer) is 0.8-1.1 times the width of the pixel defining layer 2 at the corresponding position. In this way, the privacy protection effect can be realized without affecting the light emitting efficiency.

[0105] In some embodiments, in the above-mentioned touch display panel provided by the embodiments of the present disclosure, as shown in FIG. 3, the center line of the orthographic projection of the metal grid line 31 on the substrate 1 coincides with the center line of the orthographic projection of the pixel defining layer 2 on the substrate 1 at the corresponding position, that is, the width center of the metal grid line 31 coincides with the width center of the pixel defining layer 2, so that the privacy protection effect is consistent.

[0106] It should be noted that the above-mentioned coincidence refers to approximate coincidence, which can have a certain error due to the manufacturing process.

[0107] It should be noted that the touch display panel provided by the embodiments of the present disclosure can only set the first touch metal layer 3 in FIG. 3 when realizing the touch function, that is, the metal grid line of the single-layer touch metal layer is used to form the touch electrode, and the principle of realizing the touch function can be the self-capacitance touch mode.

[0108] In some embodiments, in the above-mentioned touch display panel provided by the embodiments of the present disclosure, as shown in FIG. 4 and FIG. 5, FIG. 4 is another cross-sectional schematic view of FIG. 2 along the direction of CC', and FIG. 5 is a cross-sectional schematic view of part of the film layers of FIG. 2 along the direction of DD', further comprising: a second touch metal layer 4 located between the first touch metal layer 3 and the pixel defining layer 2, and a touch insulating layer 5 located between the first touch metal layer 3 and the second touch metal layer 4;

[0109] The second touch metal layer 4 comprises a plurality of metal grid lines 41 arranged in a cross shape, and the center line of the orthogonal projection of the metal grid lines 41 of the second touch metal layer 4 on the substrate 1 coincides with the center line of the orthogonal projection of the metal grid lines 31 of the first touch metal layer 3 at the corresponding position on the substrate 1; wherein the metal grid lines 41 of the second touch metal layer 4 at the corresponding position of the first metal grid line 311 (first light shielding layer) are multiplexed as a second light shielding layer, and the width of the second light shielding layer is 0.6-1.2 times the width of the pixel defining layer 2 at the corresponding position. The drawings of the present disclosure are schematic drawings in which the width of the second light shielding layer is greater than the width of the pixel defining layer 2 at the corresponding position, for example, the width of the second light shielding layer is 1.1 times the width of the pixel defining layer 2 at the corresponding position. In this way, the present embodiment simultaneously utilizes two layers of touch metal layers to achieve the privacy function, and compared with the single layer of touch metal layer in FIG. 2 for achieving the privacy function, FIG. 3 can further improve the privacy effect.

[0110] In some embodiments, in the above-mentioned touch display panel provided by the embodiments of the present disclosure, as shown in FIG. 4 and FIG. 5, the width of the second light shielding layer (41) is 0.8-1.1 times the width of the pixel defining layer 2 at the corresponding position. In this way, the privacy effect can be achieved without affecting the light efficiency.

[0111] Optionally, the touch insulating layer 5 can be made of organic materials, such as PI, or inorganic materials, such as silicon nitride, silicon oxide, silicon oxynitride, etc.

[0112] In some embodiments, in the above-mentioned touch display panel provided by the embodiments of the present disclosure, as shown in FIG. 4 and FIG. 5, the width of the first light shielding layer (311) can be equal to the width of the second light shielding layer (41); as shown in FIG. 6, the width of the first light shielding layer (311) can be smaller than the width of the second light shielding layer (41), but the width of both satisfies 0.6-1.2 times the width of the pixel defining layer 2 at the corresponding position, which is because the first touch metal layer 3 is farther away from the light emitting layer (to be introduced later) than the second touch metal layer 4, and therefore, the first touch metal layer 3 can adopt a smaller grid line width, which can not only achieve a narrow viewing angle, but also improve the light efficiency.

[0113] In some embodiments, in the above-mentioned touch display panel provided by the embodiments of the present disclosure, as shown in FIG. 2, FIG. 4-FIG. 7, FIG. 7 is a schematic cross-sectional view of the partial film layers in FIG. 2 along the DD' direction, the plurality of metal grid lines 41 of the second touch metal layer 4 form a plurality of bridge electrodes 40, the plurality of metal grid lines 31 of the first touch metal layer 3 form a plurality of first touch electrodes 301 arranged along a first direction X and a plurality of second touch electrodes 302 arranged along a second direction Y, the first direction X intersects the second direction Y, and the present disclosure takes the example that the first direction X is perpendicular to the second direction Y;

[0114] The first touch electrode 301 includes a plurality of first electrode blocks 3011 arranged along the second direction Y, and adjacent two first electrode blocks 3011 are electrically connected to corresponding bridge electrodes 40 through vias penetrating the touch insulating layer 5; and the second touch electrode 302 includes a plurality of second electrode blocks 3021 arranged along the first direction X, and adjacent two second electrode blocks 3021 are directly electrically connected;

[0115] Among them, the plurality of metal grid lines 41 of the second touch metal layer 4 further form a virtual electrode 42, the virtual electrode 42 is arranged in an insulating manner with the bridge electrode 40, and the virtual electrode 42 is arranged at a corresponding position of each first electrode block 3011 and each second electrode block 3021; Specifically, the virtual electrode 42 is formed in the second touch metal layer 4, which can reduce the mura phenomenon visible to the human eye on the one hand, and can realize double-layered privacy on the other hand with the first metal grid line 311 of the first touch metal layer 3, thereby improving the privacy effect.

[0116] The metal grid line 41 of the second touch metal layer 4 at the corresponding position of the first light shielding layer (311) includes: the metal grid line 41 forming the virtual electrode 42, and / or the metal grid line 41 forming the bridge electrode 40. That is, the metal grid line 41 corresponding to the virtual electrode 42 below the first light shielding layer (311) can be the metal grid line 41 corresponding to the bridge electrode 40, and can also be the metal grid line 41 corresponding to the virtual electrode 42 and the bridge electrode 40 at the same time.

[0117] It should be noted that the virtual electrode 42 is not connected to an electrical signal, and is in a floating state.

[0118] Specifically, the first electrode block 3011, the second electrode block 3021, the bridge electrode 40 and the virtual electrode 42 are all grid-shaped structures arranged around the sub-pixels, as shown in FIG. 8, the inside of the grid-shaped structure is provided with many discontinuities, and the discontinuities are uniformly dispersed to reduce the mura phenomenon visible to the human eye.

[0119] Optionally, one of the first touch electrode 301 and the second touch electrode 302 is a driving electrode (Tx), and the other is a sensing electrode (Rx).

[0120] It should be noted that the second touch metal layer 4 closer to the substrate 1 is used as the bridge metal layer, and the first touch metal layer 3 farther from the substrate 1 is used as the touch electrode layer in the embodiments of the present disclosure; of course, the second touch metal layer 4 closer to the substrate 1 can also be used as the touch metal layer, and the first touch metal layer 3 farther from the substrate 1 can be used as the bridge electrode layer.

[0121] It should be noted that the touch display panel provided in the embodiments of the present disclosure can not only be provided with the double-layer touch metal layer in FIGS. 4-7, but also can be provided with three or more layers of touch metal layers when the touch function is implemented, and the principle of touch can be a self-capacitance or mutual-capacitance touch mode, as long as at least one layer of the touch metal layer is multiplexed as the light shielding layer of the anti-peep function.

[0122] In some embodiments, in the above-mentioned touch display panel provided by the embodiments of the present disclosure, as shown in FIGS. 9-13, FIG. 9 is a plan view of the metal grid lines 31 in the display area AA in FIG. 2, FIG. 10 is another plan view of the metal grid lines 31 in the display area AA in FIG. 2, FIG. 11 is another plan view of the metal grid lines 31 in the display area AA in FIG. 2, FIG. 12 is another plan view of the metal grid lines 31 in the display area AA in FIG. 2, and FIG. 13 is a sectional view along the direction EE' in FIGS. 9-12, the display area AA includes a first display area AA1 and a second display area AA2.

[0123] The plurality of metal grid lines 31 of the first touch metal layer 3 further includes a second metal grid line 312 located in the first display area AA1, and the width of each second metal grid line 312 is less than 0.6 times the width of the pixel definition layer 2 at the corresponding position; that is, the second metal grid line 312 of the first touch metal layer 3 in the first display area AA1 does not have an anti-peep function, and the first display area AA1 is a non-anti-peep area.

[0124] In the second display area AA2, each metal grid line 31 of the first touch metal layer 3 extending along the first direction X is a first metal grid line 311, that is, each metal grid line 31 of the first touch metal layer 3 extending along the first direction X in the second display area AA2 is multiplexed as a first light shielding layer (311), so that the second display area AA2 at least has an anti-peep function in the second direction Y (i.e., at least upward and downward anti-peep), and the second display area AA2 is an anti-peep area.

[0125] In some embodiments, in the above-mentioned touch display panel provided by the embodiments of the present disclosure, as shown in FIG. 9, in the second display area AA2, each metal grid line 31 of the first touch metal layer 3 extending along the second direction Y is a second metal grid line 312, so that the second metal grid line 312 of the first touch metal layer 3 extending along the second direction Y in the second display area AA2 does not have a privacy function, the width of the first metal grid line 311 extending along the first direction X in the second display area AA2 is greater than the width of the second metal grid line 312 extending along the second direction Y in the second display area AA2, and the width of the second metal grid line 312 extending along the second direction Y in the second display area AA2 is the same as the width of each second metal grid line 312 in the first display area AA1, that is, the touch display panel corresponding to the embodiment of FIG. 9 only realizes privacy in the vertical direction.

[0126] In some embodiments, in the above-mentioned touch display panel provided by the embodiments of the present disclosure, as shown in FIG. 9, the first display area AA1 and the second display area AA1 are arranged along the first direction X, and the touch display panel corresponding to the embodiment can be used for some vehicle display screens, for example, the picture of the vehicle display screen is easy to project to the front window of the vehicle, which affects the driver's sight, and the up-down privacy shown in FIG. 9 can control the part of the large-angle light emitted from the sub-pixel in the second display area AA2 to be blocked by the first metal grid line 311 extending along the first direction X, so as to reduce the light-emitting angle range of the upper and lower positions of the second display area AA2, and avoid the picture of the vehicle display screen from being projected to the front window of the vehicle.

[0127] It should be noted that FIG. 9 takes the first direction X as the horizontal direction and the second direction Y as the vertical direction as an example; of course, the first direction X can also be the vertical direction and the second direction Y can be the horizontal direction, so that the touch display panel realizes left-right privacy, as shown in FIG. 10, for example, applied to a vehicle display screen, the left-right privacy can realize that the picture watched by the co-driver is not seen by the main driver, thereby improving the safety of driving.

[0128] In some embodiments, in the above-mentioned touch display panel provided by the embodiments of the present disclosure, as shown in FIG. 11, in the second display area AA2, each metal grid line 31 of the first touch metal layer 3 extending along the first direction X is multiplexed as a first light shielding layer (311), each metal grid line 31 of the first touch metal layer 3 extending along the second direction Y is a first metal grid line 311, that is, the width of each first metal grid line 311 of the second display area AA2 is greater than the width of each second metal grid line 312 in the first display area AA1. In this way, the touch display panel of the embodiment has a privacy function in the up, down, left and right four directions.

[0129] In some embodiments, in the above-mentioned touch display panel provided by the embodiments of the present disclosure, as shown in FIG. 11, the first display area AA1 and the second display area AA2 are arranged along the first direction X, and the corresponding touch display panel of the present embodiment can be used for some vehicle display screens, for example, the main driver watches the content of the first display area AA1 (non-peep area), the co-driver watches the content of the second display area AA2 (peep area), or the co-driver watches the content of the peep area + non-peep area.

[0130] In some embodiments, in the above-mentioned touch display panel provided by the embodiments of the present disclosure, as shown in FIG. 12, the first display area AA1 and the second display area AA2 are alternately arranged along the first direction X and the second direction Y, and each metal mesh line 31 extending along the first direction X and the second direction Y in each second display area AA2 is a first metal mesh line 311 (i.e., multiplexed as a first light shielding layer). The corresponding touch display panel of the present embodiment is suitable for a display mode that can switch between peep and non-peep. In this scenario, all sub-pixels are lit in the non-peep mode by the driving circuit layer (to be described later), and only the sub-pixels in the peep area are lit in the peep mode. By controlling the on or off of the sub-pixels in the peep area and the non-peep area, the switching between the peep mode and the non-peep mode is realized. The number of corresponding sub-pixels in one peep area and one non-peep area can be the same or different, and the shape of the sub-pixels can also be the same or different.

[0131] In some embodiments, in the above-mentioned touch display panel provided by the embodiments of the present disclosure, as shown in FIGS. 9-13, the plurality of metal mesh lines 31 of the first touch metal layer 3 further include a third metal mesh line 312 located at the junction of the first display area AA1 and the second display area AA2, the third metal mesh line 312 is divided into a first part 312' and a second part 312" along the center line of the pixel defining layer 2 at the corresponding position, the center line of the pixel defining layer 2 is parallel to the junction line of the first display area AA1 and the second display area AA2, the first part 312' is located in the first display area AA1, the second part 312" is located in the second display area AA2, the width of the first part 312' is less than 0.6 times the width of half of the pixel defining layer 2 at the corresponding position, the width of the second part 312" is 0.6-1.2 times the width of half of the pixel defining layer 2 at the corresponding position, preferably, the width of the second part 312" is 0.8-1.1 times the width of half of the pixel defining layer 2 at the corresponding position. In this way, the first part 312' of the third metal mesh line 312 at the junction of the first display area AA1 and the second display area AA2 does not have feedback function, and the second part 312" has feedback function.

[0132] It should be noted that the touch display panel corresponding to FIGS. 9-13 is described by taking the first touch metal layer 3 as an example; of course, the touch display panel corresponding to FIGS. 9-12 can also include the second touch metal layer 4, so that the metal grid lines 41 of the second touch metal layer 4 and the metal grid lines 31 of the first touch metal layer 3 can be arranged at the same position with the same width in the privacy area (AA2) and the non-privacy area (AA1); or the metal grid lines 41 of the second touch metal layer 4 and the metal grid lines 31 of the first touch metal layer 3 can be arranged at the same position with the same width in the non-privacy area (AA1), and the width of the metal grid lines 31 of the first touch metal layer 3 is arranged to be smaller than the width of the metal grid lines 41 of the second touch metal layer 4 in the privacy area (AA2), but the width of both satisfies 0.6-1.2 times the width of the corresponding position pixel defining layer 2.

[0133] In some embodiments, when the privacy area (AA2) and the non-privacy area (AA1) coexist in the touch display panel, since the width of the first metal grid line 311 of the privacy area (AA2) is greater than the width of the second metal grid line 32 of the non-privacy area (AA1), so the touch electrode resistance of the non-privacy area is greater than the touch electrode resistance of the privacy area, resulting in a difference in touch sensitivity. In order to solve this problem, in the above-mentioned touch display panel provided in the embodiments of the present disclosure, as shown in FIGS. 9-12 and FIG. 14, which is another cross-sectional view along the EE' direction in FIGS. 9-12, at least one first electrode block 301 in the first display area AA1 is electrically connected to the corresponding virtual electrode 42 through the via hole penetrating the touch insulating layer 5, and at least one second electrode block 302 in the first display area AA1 is electrically connected to the corresponding virtual electrode 42 through the via hole penetrating the touch insulating layer 5. The touch display panel corresponding to the present embodiment adopts a double-layer touch structure of the first touch metal layer 3 and the second touch metal layer 4, and by electrically connecting the first electrode block 301 and the second electrode block 302 in the non-privacy area (AA1) to the virtual electrode 42, the touch electrode resistance of the non-privacy area (AA1) can be reduced, and the uniformization effect of the touch sensitivity of the privacy area (AA2) and the non-privacy area (AA1) can be achieved.

[0134] In some embodiments, in the above-mentioned touch display panel provided in the embodiments of the present disclosure, as shown in FIGS. 9-12 and FIG. 15, which is another cross-sectional view along the EE' direction in FIGS. 9-12, the thickness of the second metal grid line 312 is greater than the thickness of the first metal grid line 311. In this way, by increasing the thickness of the touch electrode in the non-privacy area (AA1), the touch electrode resistance of the non-privacy area (AA1) can be reduced, and the uniformization effect of the touch sensitivity of the privacy area (AA2) and the non-privacy area (AA1) can also be achieved.

[0135] Optionally, as shown in FIG. 15, the thickness of the second metal grid line 312 can be 1.2-3 times the thickness of the first metal grid line 311.

[0136] It should be noted that the touch display panel corresponding to FIG. 15 only shows the first touch metal layer 3; of course, the touch display panel corresponding to FIG. 15 can also include the second touch metal layer 4.

[0137] In some embodiments, in the above-mentioned touch display panel provided by the embodiments of the present disclosure, as shown in FIGS. 9-12 and FIG. 16, FIG. 16 is another cross-sectional schematic view in the EE' direction of FIGS. 9-12, further including a raised layer 6 located in the second display area AA2 (peep-proof area) and between the touch insulating layer 5 and the first touch metal layer 3. In this way, the distance between the touch electrode of the peep-proof area and the light-emitting layer (to be introduced later) is greater than the distance between the touch electrode of the non-peep-proof area (AA1) and the light-emitting layer, which can further improve the peep-proof effect.

[0138] Optionally, the material of the raised layer 6 can be an inorganic insulating material, such as silicon nitride, silicon oxide, silicon oxynitride, etc.; the material of the raised layer 6 can also be an organic insulating material, such as polyimide.

[0139] It should be noted that the touch display panel corresponding to FIG. 16 only shows the first touch metal layer 3; of course, the touch display panel corresponding to FIG. 16 can also include the second touch metal layer 4.

[0140] In some embodiments, when the peep-proof area (AA2) and the non-peep-proof area (AA1) coexist in the touch display panel, since the width of the first metal grid line 311 of the peep-proof area (AA2) is greater than the width of the second metal grid line 312 of the non-peep-proof area (AA1), the metal reflection of the peep-proof area is greater than that of the non-peep-proof area, and the difference in reflectivity of the two areas will cause visibility and form unevenness of the picture. In order to solve the above-mentioned problem, in the above-mentioned touch display panel provided by the embodiments of the present disclosure, as shown in FIGS. 9-12 and FIG. 17, FIG. 17 is another cross-sectional schematic view in the EE' direction of FIGS. 9-12, the first metal grid line 311 can be a single-layer metal structure, and the surface of the first metal grid line 311 away from the substrate 1 is uneven, so that the upper surface of the first metal grid line 311 of the peep-proof area is roughened, which can reduce the metal reflection of the peep-proof area and reduce the visibility. Specifically, after the formation of the first touch metal layer 3, a plurality of concave-convex structures can be formed on the surface thereof by using plasma treatment.

[0141] It should be noted that the touch display panel corresponding to FIG. 17 only shows the first touch metal layer 3; of course, the touch display panel corresponding to FIG. 17 can also include the second touch metal layer 4.

[0142] In some embodiments, in the above-mentioned touch display panel provided by the embodiments of the present disclosure, as shown in FIGS. 9-12 and FIG. 18, which is another cross-sectional schematic view of FIGS. 9-12 along the direction of EE', the metal grid line 31 (311 and 312) includes a first metal line 314, a second metal line 315 and a third metal line 316 which are stacked in a direction away from the substrate 1, the material of the first metal line 314 and the third metal line 316 both includes Ti, and the material of the second metal line 315 includes Al. The touch electrode formed by the metal grid line 31 with the Ti / Al / Ti structure has better touch sensitivity.

[0143] In some embodiments, in the above-mentioned touch display panel provided by the embodiments of the present disclosure, as shown in FIGS. 9-12 and FIG. 19, which is another cross-sectional schematic view of FIGS. 9-12 along the direction of EE', the first metal line 314 of the first metal grid line 311 can be reused as the first light shielding layer, so that the width of the first metal line 314 is greater than the width of the second metal line 315 and the third metal line 316; as shown in FIG. 20, which is another cross-sectional schematic view of FIGS. 9-12 along the direction of EE', the third metal line 316 of the first metal grid line 311 can be reused as the first light shielding layer, so that the width of the third metal line 316 is greater than the width of the first metal line 314 and the second metal line 315; as shown in FIG. 21, which is another cross-sectional schematic view of FIGS. 9-12 along the direction of EE', the second metal line 315 and the third metal line 316 of the first metal grid line 311 can both be reused as the first light shielding layer, so that the width of the second metal line 315 and the third metal line 316 is greater than the width of the first metal line 314.

[0144] It should be noted that the touch display panel corresponding to FIGS. 18-21 only shows the first touch metal layer 3; of course, the touch display panel corresponding to FIGS. 18-21 can also include the second touch metal layer 4.

[0145] In some embodiments, in the above-mentioned touch display panel provided by the embodiments of the present disclosure, as shown in FIGS. 9-12 and FIG. 22, which is another cross-sectional schematic view of FIGS. 9-12 along the direction of EE', the surface of the third metal line 316 of the first metal grid line 311 away from the substrate 1 is uneven. In this way, for the first metal grid line 311 with the Ti / Al / Ti three-layer structure, only the top Ti layer is roughened, which can reduce the metal reflection of the privacy area and reduce the visibility. Specifically, after forming the Ti / Al / Ti three-layer structure, a plurality of concave-convex structures can be formed on the surface of the top Ti layer by plasma treatment.

[0146] It should be noted that the touch display panel corresponding to FIG. 22 only shows the first touch metal layer 3; of course, the touch display panel corresponding to FIG. 22 can also include the second touch metal layer 4.

[0147] In some embodiments, in the above-mentioned touch display panel provided by the embodiments of the present disclosure, as shown in FIGS. 9-12 and FIG. 23, which is another cross-sectional schematic view of FIGS. 9-12 along the EE' direction, the surface of the touch insulating layer 5 away from the substrate 1 is uneven. In this way, the touch insulating layer 5 at the position corresponding to the first metal grid line 311 of the peep-proof area (AA2) can also be designed with a concave-convex pattern, so that when the first touch metal layer 3 covers the touch insulating layer 5 with the concave-convex pattern, the upper surface of the first touch metal layer 3 will also form a concave-convex structure, thereby reducing the metal reflection of the peep-proof area and reducing the visibility.

[0148] It should be noted that the touch display panel corresponding to FIG. 23 only shows the first touch metal layer 3; of course, the touch display panel corresponding to FIG. 23 can also include the second touch metal layer 4.

[0149] In some embodiments, in the above-mentioned touch display panel provided by the embodiments of the present disclosure, as shown in FIGS. 9-12, FIG. 24 and FIG. 25, which are two other cross-sectional schematic views of FIGS. 9-12 along the EE' direction, further including the black matrix 7 and the filter layer 8 located on the side of the first touch metal layer 3 away from the substrate 1, the black matrix 7 includes a plurality of openings 71 corresponding to the sub-pixels, and the filter layer 8 includes a plurality of color films 81, each color film 81 covers a corresponding opening 71. Specifically, the plurality of sub-pixels in the display area AA of the touch display panel can include red sub-pixels (R), green sub-pixels (G) and blue sub-pixels (B), and the color films 81 correspondingly include red color films, green color films and blue color films; the black matrix + color film structure adopted by the embodiments of the present disclosure not only can improve the contrast of the OLED display panel, that is, the color film can filter the outgoing light and improve the color purity of the outgoing light, and the color film can filter the external light, which can reduce the ambient light entering the touch display panel and further reduce the reflection of the ambient light by the touch display panel, thereby improving the user experience; and the black matrix + color film structure can replace the traditional polarizer, and the thickness of the black matrix + color film is much smaller than that of the polarizer, thereby reducing the overall panel thickness and being conducive to thinning.

[0150] Optionally, the material of the black matrix can be black resin material.

[0151] In some embodiments, in the above-mentioned touch display panel provided by the embodiments of the present disclosure, as shown in FIG. 24 and FIG. 25, the width of the black matrix 7 is the same as the width of the metal grid line 31 at the corresponding position. Due to the influence of the manufacturing process, the width of the black matrix 7 and the width of the metal grid line 31 at the corresponding position are not necessarily exactly the same, and can have a certain error (for example, ±10%). In this way, the width of the black matrix 7 in the peep-proof area is greater than the width of the black matrix 7 in the non-peep-proof area, and the orthographic projection of the black matrix 7 on the substrate 1 covers the orthographic projection of the metal grid line 31 on the substrate 1, avoiding the problem of uneven picture caused by the different reflectivities of the touch metal layer in the peep-proof area and the non-peep-proof area.

[0152] In some embodiments, in the above-mentioned touch display panel provided by the embodiments of the present disclosure, as shown in FIG. 24, the black matrix 7 can be in direct contact with the first touch metal layer 3, which can reduce the reflection of the touch metal layer and reduce the visibility.

[0153] In some embodiments, in the above-mentioned touch display panel provided by the embodiments of the present disclosure, as shown in FIG. 25, a protective layer 9 is further arranged between the black matrix 7 and the first touch metal layer 3. Specifically, the protective layer 9 can be an inorganic layer or an organic layer, and preferably an organic layer such as PI and the like. The thickness of the organic layer is relatively thick, and the first metal grid line 311 and the black matrix 7 form a double-layer peep-proof structure, further improving the peep-proof effect.

[0154] It should be noted that the touch display panel corresponding to FIG. 24 and FIG. 25 only shows the first touch metal layer 3; of course, the touch display panel corresponding to FIG. 24 and FIG. 25 can also include the second touch metal layer 4.

[0155] In some embodiments, the peep-proof area will cause the light emitted by part of the sub-pixels to be blocked by the touch metal layer, resulting in a decrease in light output and a decrease in brightness. In order to solve this problem, in the above-mentioned touch display panel provided by the embodiments of the present disclosure, as shown in FIG. 9-FIG. 12 and FIG. 26, which is another cross-sectional view along the EE' direction in FIG. 9-FIG. 12, a lens layer 100 is further arranged in the second display area AA2 and between the protective layer 9 and the first touch metal layer 3.

[0156] The lens layer 100 includes lenses 101 covering each sub-pixel in the second display area AA2, and the orthographic projection boundary of the lens 101 on the substrate 1 is located within the orthographic projection range of the first metal grid line 311 on the substrate 1. The refractive index of the lens layer 100 is greater than the refractive index of the protective layer 9. In this embodiment, by adding the high-refractive lens 101 in the peep-proof area (AA2), the material of the lens 101 is an organic material, and the high-refractive lens 101 and the low-refractive protective layer 9 can constitute a light extraction structure. The light emitted by the sub-pixel is refracted at the interface between the high-refractive lens 101 and the low-refractive protective layer 9, thereby improving the light extraction efficiency.

[0157] It should be noted that the touch display panel corresponding to FIG. 26 only schematically shows the first touch metal layer 3; of course, the touch display panel corresponding to FIG. 26 can also include the second touch metal layer 4.

[0158] In some embodiments, the peep-proof area will cause the light emission amount to decrease and the brightness to decrease due to the touch metal layer shielding part of the light emitted by the sub-pixel. In order to solve this problem, in the above touch display panel provided in the embodiments of the present disclosure, as shown in FIGS. 9-12 and FIG. 27, FIG. 27 is another cross-sectional schematic view in the EE' direction of FIGS. 9-12, and the touch display panel further includes a lens layer 100 located in the second display area AA2 and between the protective layer 9 and the first touch metal layer 3.

[0159] The lens layer 100 includes lenses 101 covering each first metal mesh line 311 in the second display area AA2, the lenses 101 have a normal projection boundary on the substrate 1 located outside the normal projection range of the first metal mesh line 311 on the substrate 1, and the refractive index of the lens layer 100 is less than the refractive index of the protective layer 9. In this embodiment, the low-refractive-index lens 101 is added between the protective layer 9 and the first touch metal layer 3 in the peep-proof area (AA2), the material of the lens 101 is an organic material, and the low-refractive-index lens 101 and the high-refractive-index protective layer 9 can constitute a light extraction structure. The light emitted by the sub-pixel is totally reflected on the surface of the low-refractive-index lens 101 and is collimated to be emitted, thereby improving the light emission efficiency.

[0160] It should be noted that the touch display panel corresponding to FIG. 27 only schematically shows the first touch metal layer 3; of course, the touch display panel corresponding to FIG. 27 can also include the second touch metal layer 4.

[0161] In some embodiments, the peep-proof area will cause the light emission amount to decrease and the brightness to decrease due to the touch metal layer shielding part of the light emitted by the sub-pixel. In order to solve this problem, in the above touch display panel provided in the embodiments of the present disclosure, as shown in FIGS. 9-12 and FIG. 28, FIG. 28 is another cross-sectional schematic view in the EE' direction of FIGS. 9-12, and the touch display panel further includes a lens layer 100 located between the protective layer 9 and the first touch metal layer 3.

[0162] The lens layer 100 includes a first lens 102 covering each metal mesh line 31 in the display area AA (i.e., the privacy area + the non-privacy area), and a second lens 103 covering at least part of the sub-pixel in the second display area AA2, the orthographic projection boundary of the first lens 102 on the substrate 1 is located outside the orthographic projection range of the metal mesh line 31 on the substrate 1, the orthographic projection of the second lens 103 on the substrate 1 covers the central region of the sub-pixel, and the refractive index of the lens layer 100 is less than the refractive index of the protective layer 9. In the non-privacy area of the present embodiment, the light extraction structure composed of the first lens 102 with low refractive index and the protective layer 9 with high refractive index is arranged above the metal mesh line 31, the light extraction structure composed of the first lens 102 with low refractive index and the protective layer 9 with high refractive index is arranged above the metal mesh line 31 in the privacy area, and the light extraction structure composed of the second lens 103 with low refractive index and the protective layer 9 with high refractive index is arranged at the position of the sub-pixel in the privacy area, so that the light extraction efficiency of the privacy area and the non-privacy area is improved, and because the second lens 103 covering at least part of the sub-pixel is further arranged in the privacy area, the number of low-refractive lenses in the privacy area is greater than the number of low-refractive lenses in the non-privacy area, further improving the light extraction efficiency of the privacy area.

[0163] It should be noted that the touch display panel corresponding to FIG. 28 only shows the first touch metal layer 3; of course, the touch display panel corresponding to FIG. 28 can also include the second touch metal layer 4.

[0164] It should be noted that FIGS. 3-6 and 13-23 all include the protective layer 9 located on the side of the first touch metal layer 3 away from the substrate 1, and the black matrix 7 + the filter layer 8 located on the side of the protective layer 9 away from the substrate 1.

[0165] It should be noted that the above-mentioned multiple embodiments provided in the present embodiment can be used in combination under the condition that the schemes do not conflict with each other.

[0166] In some embodiments, in the above-mentioned touch display panel provided by the present embodiment, as shown in FIGS. 2 and 29, FIG. 29 is a cross-sectional schematic view of the specific structure along the CC' direction in FIG. 2, further including: a driving circuit layer 50 located between the substrate 1 and the pixel defining layer 2, an anode 60 located between the driving circuit layer 50 and the pixel defining layer 2 and arranged corresponding to the sub-pixel, a light-emitting layer 70 located between the pixel defining layer 2 and the second touch metal layer 4, a cathode 80 located between the light-emitting layer 70 and the second touch metal layer 4, and an encapsulation layer 90 located between the cathode 80 and the second touch metal layer 4.

[0167] Specifically, as shown in FIG. 29, the encapsulation layer 90 can include a first inorganic layer 901, an organic material layer 902 and a second inorganic layer 903 which are arranged in a stack; the encapsulation layer 90 not only can isolate the light-emitting layer 70 from the outside, avoiding water and oxygen from invading the light-emitting layer 70 of the touch display panel and affecting the service life of the display panel, but also has a flat surface on the side away from the substrate 1, so that the film layers (for example, the touch metal layers) made subsequently can be made on the flat surface, which is more conducive to improving the touch display effect of the touch display panel.

[0168] Specifically, as shown in FIG. 29, the drive circuit layer 50 includes an active layer 501, a first gate insulating layer 502, a first gate metal layer 503, a second gate insulating layer 504, a second gate metal layer 505, an interlayer dielectric layer 506, a first source-drain metal layer 507 (SD1), a passivation layer 508, a first planarization layer 509, a second source-drain metal layer 510 (SD2) and a second planarization layer 511 which are arranged in a stack between the substrate 1 and the anode 60; specifically, as shown in FIG. 29, the first source-drain metal layer 507 is generally provided with a source electrode, a drain electrode, a data line and the like, and the second source-drain metal layer 510 is generally provided with a lap electrode for lapping the anode 60 and the source / drain electrode.

[0169] Specifically, as shown in FIG. 29, the touch display panel further includes a touch buffer layer 512 between the encapsulation layer 90 and the second touch metal layer 4, and a buffer layer 513 between the substrate 1 and the active layer 501.

[0170] It should be noted that the specific structure between the substrate 1 and the encapsulation layer 90 in FIGS. 3-6 and 13-28 is shown in FIG. 29.

[0171] Specifically, as shown in FIG. 29, the touch display panel further includes a non-display area BB arranged around the display area AA, the non-display area BB includes a binding area BD located on one side of the display area AA and at least one barrier wall arranged around the display area AA between the display area AA and the binding area BD; the embodiment of the present disclosure takes two barrier walls as an example, for example, a first barrier wall Dam1 close to the display area AA and a second barrier wall Dam2 located on the side away from the display area AA of the first barrier wall Dam1, and the arrangement of the barrier wall can improve the water and oxygen blocking performance of the touch display panel.

[0172] Specifically, as shown in FIG. 29, the binding area BD includes a drive chip (IC), the first touch electrode 301 is electrically connected to the IC through the first touch lead 300, and the second touch electrode 303 is electrically connected to the IC through the second touch lead 400, and the drive chip (IC) is used to provide an electrical signal to the touch display panel.

[0173] Optionally, the substrate in the present disclosure can be a rigid substrate or a flexible substrate, wherein the material of the rigid substrate can be, but is not limited to, glass and the like; the material of the flexible substrate can be, but is not limited to, polyethylene terephthalate (PET), polyimide (PI) and the like.

[0174] The present disclosure further provides a touch display panel, as shown in FIGS. 2, 9-29, comprising a display area AA, the display area AA comprising a plurality of sub-pixels, the display area AA being divided into a first display area AA1 and a second display area AA2.

[0175] The touch display panel comprises:

[0176] a substrate 1;

[0177] a light-emitting layer 70 located on one side of the substrate 1, the light-emitting layer 70 comprising a light-emitting structure corresponding to each sub-pixel;

[0178] an encapsulation layer 90 located on a side of the light-emitting layer 70 away from the substrate 1;

[0179] a first touch metal layer 3 located on a side of the encapsulation layer 90 away from the substrate 1; the first touch metal layer 3 comprising: a plurality of first metal grid lines 311 arranged in a cross manner in the second display area AA2, and a plurality of second metal grid lines 312 arranged in a cross manner in the first display area AA1; wherein the width of the first metal grid lines 311 is greater than the width of the second metal grid lines 312.

[0180] The above touch display panel provided by the present disclosure, the first metal grid lines of the first touch metal layer can be reused as the first light-shielding layer, so that the second display area is a privacy area and the first display area is a non-privacy area, thereby achieving the protection of user privacy. In addition, on the one hand, the present disclosure controls part of the large-angle light emitted from the sub-pixel to be blocked by the first metal grid lines by reasonably setting the width of the first metal grid lines, so as to reduce the light-emitting angle range of the touch display panel, so that the touch display panel realizes the privacy function. On the other hand, the present disclosure reuses the first metal grid lines as the first light-shielding layer, avoids forming a light-shielding layer specially used for light-shielding in the touch display panel, reduces the number of film layers inside the touch display panel, optimizes the internal structure of the touch display panel, and realizes the privacy function while simplifying the process, reducing the overall thickness of the panel, realizing the thinness of the panel, and reducing the cost.

[0181] In some embodiments, the above-mentioned touch display panel provided by the embodiments of the present disclosure, as shown in FIG. 2 and FIG. 9-29, further comprises a pixel defining layer 2 between the substrate 1 and the light-emitting layer 70, the pixel defining layer 2 defines a plurality of sub-pixels, the orthographic projection of the first metal grid line 311 and the second metal grid line 312 on the substrate 1 at least partially overlaps with the orthographic projection of the pixel defining layer 2 on the substrate 1, the width of the first metal grid line 311 is 0.6-1.2 times the width of the pixel defining layer 2 at the corresponding position, preferably, the width of the first metal grid line 311 is 0.8-1.1 times the width of the pixel defining layer 2 at the corresponding position.

[0182] In some embodiments, the above-mentioned touch display panel provided by the embodiments of the present disclosure, as shown in FIG. 2 and FIG. 9-29, further comprises a second touch metal layer 4 between the first touch metal layer 3 and the encapsulation layer 90, the second touch metal layer 4 comprises a plurality of metal grid lines 41 arranged in a cross shape.

[0183] The width of the metal grid line 41 in the second touch metal layer 4 at the first display area AA1 is the same as the width of the second metal grid line 312 at the corresponding position.

[0184] The width of the metal grid line 41 in the second touch metal layer 4 at the second display area AA2 is less than or equal to the width of the first metal grid line 311 at the corresponding position, and greater than the width of the second metal grid line 312. In this way, the second display area AA2 of the present disclosure can realize double-layered anti-peeping by the second touch metal layer 4 and the first touch metal layer 3, thereby improving the anti-peeping effect.

[0185] In some embodiments, the above-mentioned touch display panel provided by the embodiments of the present disclosure, as shown in FIG. 9-11, the first display area AA1 and the second display area AA2 can be arranged along the first direction X, so that the up-down and / or left-right anti-peeping can be realized according to the needs; as shown in FIG. 12, the first display area AA1 and the second display area AA2 can be alternately arranged along the first direction and the second direction, the first direction X intersects with the second direction Y, so that the switching between the anti-peeping and the non-anti-peeping can be realized according to the needs.

[0186] It should be noted that the specific structure of the first touch metal layer and the second touch metal layer of the embodiments of the present disclosure is described in the foregoing, which will not be repeated here.

[0187] It should be noted that the other essential components in the touch display panel should be understood by those skilled in the art, which will not be repeated here and should not be regarded as a limitation to the present disclosure.

[0188] Based on the same inventive concept, the display device provided by the embodiments of the present disclosure also includes the touch display panel provided by the embodiments of the present disclosure. Since the principle of solving the problem of the display device is similar to that of the touch display panel, the implementation of the display device provided by the embodiments of the present disclosure can be referred to the implementation of the touch display panel, and the repeated parts will not be described here.

[0189] In the implementation, the display device provided by the embodiments of the present disclosure can further include a cover plate covering the touch display panel. Specifically, the cover plate can be a rigid cover plate or a flexible cover plate.

[0190] In the implementation, the display device provided by the embodiments of the present disclosure can be a full-screen display device, or can also be a flexible display device, etc., which is not limited here.

[0191] In the implementation, the display device provided by the embodiments of the present disclosure can be a full-screen mobile phone as shown in FIG. 30. Of course, the display device provided by the embodiments of the present disclosure can also be any product or component with display function, such as a mobile phone, a projector, a 3D printer, a virtual reality device, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, etc. Other essential components of the display device should be understood by those skilled in the art, and will not be described here, nor should it be considered as a limitation of the present disclosure. The display device includes but is not limited to: a radio frequency unit, a network module, an audio output & input unit, a sensor, a display unit, a user input unit, an interface unit, a memory, a processor, and a power supply, etc. In addition, those skilled in the art can understand that the above structure does not constitute a limitation on the display device provided by the embodiments of the present disclosure, in other words, the display device provided by the embodiments of the present disclosure can include more or less components, or combine certain components, or different component arrangements.

[0192] The touch display panel and the display device provided by the embodiments of the present disclosure can control part of the light emitted from the sub-pixel at a large angle to be blocked by the first metal grid line of the first touch metal layer by reasonably setting the width of the first metal grid line, so as to reduce the light-emitting angle range of the touch display panel, so that the touch display panel realizes the privacy protection function. On the other hand, the first metal grid line of the first touch metal layer is reused as the first light shielding layer, which avoids forming a light shielding layer specially used for light shielding in the touch display panel, reduces the number of films inside the touch display panel, optimizes the internal structure of the touch display panel, and realizes the privacy protection function while simplifying the process, reducing the overall thickness of the panel, realizing the thinness of the panel, and reducing the cost.

[0193] While preferred embodiments of the present disclosure have been described, those skilled in the art will appreciate that other modifications and variations to the preferred embodiments are possible in light of the above teachings. It is, therefore, contemplated that the appended claims be construed to include all such modifications and variations as falling within the true scope of the present disclosure.

[0194] Obviously, numerous modifications and variations of the present embodiments are possible in light of the above teachings. It is, therefore, to be understood that within the scope of the present disclosure, the present disclosure can be practiced otherwise than as specifically set out herein.

Claims

1. A touch display panel, wherein, The touch display panel comprises a display area, and the touch display panel comprises: a substrate substrate; a pixel definition layer located on one side of the substrate substrate, the pixel definition layer defining a plurality of sub-pixels located in the display area; a first touch metal layer located on the side of the pixel definition layer away from the substrate substrate; the first touch metal layer comprises a plurality of metal mesh lines arranged in a cross manner, and the projection of each metal mesh line on the substrate substrate at least partially overlaps with the projection of the pixel definition layer on the substrate substrate; wherein the plurality of metal mesh lines comprise a first metal mesh line, the first metal mesh line is multiplexed as a first light shielding layer, and the width of the first light shielding layer is 0.6-1.2 times the width of the pixel definition layer at the corresponding position. 2.The touch display panel of claim 1, wherein, The width of the first light shielding layer is 0.8-1.1 times the width of the pixel definition layer at the corresponding position. 3.The touch display panel of claim 1 or 2, wherein, The center line of the projection of the metal mesh line on the substrate substrate coincides with the center line of the projection of the pixel definition layer on the substrate substrate at the corresponding position. 4.The touch display panel of any one of claims 1-3, wherein, Further comprising: a second touch metal layer located between the first touch metal layer and the pixel definition layer, and a touch insulating layer located between the first touch metal layer and the second touch metal layer; The second touch metal layer comprises a plurality of metal mesh lines arranged in a cross manner, and the center line of the projection of the metal mesh line of the second touch metal layer on the substrate substrate coincides with the center line of the projection of the metal mesh line of the first touch metal layer on the substrate substrate at the corresponding position; wherein the metal mesh line of the second touch metal layer at the corresponding position of the first light shielding layer is multiplexed as a second light shielding layer, and the width of the second light shielding layer is 0.6-1.2 times the width of the pixel definition layer at the corresponding position. 5.The touch display panel of claim 4, wherein, The width of the second light shielding layer is 0.8-1.1 times the width of the pixel definition layer at the corresponding position. 6.The touch display panel of claim 4 or 5, wherein, The width of the first light shielding layer is less than or equal to the width of the second light shielding layer. 7.The touch display panel of any one of claims 4-6, wherein, The plurality of metal mesh lines of the second touch metal layer form a plurality of bridge electrodes, the plurality of metal mesh lines of the first touch metal layer form a plurality of first touch electrodes arranged in a first direction and a plurality of second touch electrodes arranged in a second direction, and the first direction intersects the second direction; The first touch electrode comprises a plurality of first electrode blocks arranged in the second direction, and adjacent two first electrode blocks are electrically connected to corresponding bridge electrodes through vias penetrating the touch insulating layer; the second touch electrode comprises a plurality of second electrode blocks arranged in the first direction, and adjacent two second electrode blocks are directly electrically connected; Wherein, the plurality of metal mesh lines of the second touch metal layer also form a virtual electrode, the virtual electrode is arranged in insulation with the bridge electrode, and the virtual electrode is arranged at the corresponding position of each first electrode block and each second electrode block; The metal mesh line of the second touch metal layer at the corresponding position of the first light shielding layer comprises: a metal mesh line forming the virtual electrode, and / or a metal mesh line forming the bridge electrode. 8.The touch display panel of claim 7, wherein, The display area comprises a first display area and a second display area; The plurality of metal grid lines of the first touch metal layer further comprises second metal grid lines located in the first display area, and a width of each of the second metal grid lines is less than 0.6 times of a width of the pixel definition layer at a corresponding position. In the second display area, each of the metal grid lines of the first touch metal layer extending along the first direction is the first metal grid line. 9.The touch display panel of claim 8, wherein, In the second display area, each of the metal grid lines of the first touch metal layer extending along the second direction is the second metal grid line. 10.The touch display panel of claim 8, wherein, In the second display area, each of the metal grid lines of the first touch metal layer extending along the second direction is the first metal grid line. 11.The touch display panel of any one of claims 8-10, wherein, The first display area and the second display area are arranged along the first direction. 12.The touch display panel of any one of claims 8-10, wherein, The first display area and the second display area are alternately arranged along the first direction and the second direction. 13.The touch display panel of any one of claims 8-12, wherein, The plurality of metal grid lines of the first touch metal layer further comprises third metal grid lines located at a junction of the first display area and the second display area, the third metal grid line is divided into a first part and a second part along a center line of the pixel definition layer at a corresponding position, the center line of the pixel definition layer is parallel to a junction line of the first display area and the second display area, the first part is located in the first display area, the second part is located in the second display area, a width of the first part is less than 0.6 times of half of the width of the pixel definition layer at the corresponding position, and a width of the second part is 0.6-1.2 times of half of the width of the pixel definition layer at the corresponding position. 14.The touch display panel of any one of claims 8-13, wherein, At least one of the first electrode blocks in the first display area is electrically connected to a corresponding virtual electrode through a via hole penetrating the touch insulating layer, and at least one of the second electrode blocks in the first display area is electrically connected to a corresponding virtual electrode through a via hole penetrating the touch insulating layer. 15.The touch display panel of any one of claims 8-13, wherein, A thickness of the second metal grid line is greater than a thickness of the first metal grid line. 16.The touch display panel of any one of claims 8-15, wherein, A pad layer is further included between the second display area and the first touch metal layer. 17.The touch display panel of any one of claims 8-16, wherein, A surface of the first metal grid line away from the substrate is uneven. 18.The touch display panel of any one of claims 8-17, wherein, The metal grid line comprises a first metal line, a second metal line and a third metal line stacked in a direction away from the substrate, a material of the first metal line and the third metal line comprises Ti, and a material of the second metal line comprises Al. 19.The touch display panel of claim 18, wherein, The first metal line of the first metal grid line is multiplexed as the first light shielding layer. 20.The touch display panel of claim 18, wherein, The third metal line of the first metal grid line is multiplexed as the first light shielding layer. 21.The touch display panel of claim 20, wherein, The second metal line of the first metal grid line is multiplexed as the first light shielding layer.

22. The touch display panel of any of claims 18-21, wherein, A surface of the third metal line of the first metal grid line away from the substrate is uneven. 23.The touch display panel of claim 17 or 22, wherein, A surface of the touch insulating layer away from the substrate is uneven. 24.The touch display panel of any one of claims 8-23, wherein, The black matrix is located on a side of the first touch metal layer away from the substrate, and the black matrix includes a plurality of openings corresponding to the sub-pixels. 25.The touch display panel of claim 24, wherein, The width of the black matrix is the same as the width of the metal grid line at the corresponding position. 26.The touch display panel of claim 25, wherein, The black matrix is in direct contact with the first touch metal layer. 27.The touch display panel of claim 25, wherein, A protective layer is further included between the black matrix and the first touch metal layer. 28.The touch display panel of claim 27, wherein, A lens layer is further included in the second display area and between the protective layer and the first touch metal layer. The lens layer includes lenses covering each of the sub-pixels in the second display area, a boundary of a projection of the lens on the substrate is located within a projection range of the first metal grid line on the substrate, and a refractive index of the lens layer is greater than a refractive index of the protective layer. 29.The touch display panel of claim 27, wherein, A lens layer is further included in the second display area and between the protective layer and the first touch metal layer. The lens layer includes lenses covering each of the first metal grid lines in the second display area, a boundary of a projection of the lens on the substrate is located outside a projection range of the first metal grid line on the substrate, and a refractive index of the lens layer is less than a refractive index of the protective layer. 30.The touch display panel of claim 27, wherein, A lens layer is further included between the protective layer and the first touch metal layer. The lens layer includes first lenses covering each of the metal grid lines in the display area and second lenses covering at least part of the sub-pixels in the second display area, a boundary of a projection of the first lens on the substrate is located outside a projection range of the metal grid line on the substrate, a projection of the second lens on the substrate covers a central region of the sub-pixel, and a refractive index of the lens layer is less than a refractive index of the protective layer.

31. The touch display panel of any of claims 4-30, wherein, Further included are a driving circuit layer between the substrate and the pixel defining layer, an anode arranged corresponding to the sub-pixels between the driving circuit layer and the pixel defining layer, a light-emitting layer between the pixel defining layer and the second touch metal layer, a cathode between the light-emitting layer and the second touch metal layer, and an encapsulation layer between the cathode and the second touch metal layer.

32. A touch display panel, wherein, The display area includes a plurality of sub-pixels, and the display area is divided into a first display area and a second display area. The touch display panel includes: a substrate; a light-emitting layer on a side of the substrate, the light-emitting layer including a light-emitting structure corresponding to each of the sub-pixels; an encapsulation layer on a side of the light-emitting layer away from the substrate; a first touch metal layer on a side of the encapsulation layer away from the substrate; the first touch metal layer including a plurality of first metal grid lines arranged in the second display area and a plurality of second metal grid lines arranged in the first display area; wherein the width of the first metal grid line is greater than the width of the second metal grid line. 33.The touch display panel of claim 32, wherein, The pixel defining layer is located between the substrate and the light emitting layer, and defines the plurality of sub-pixels. The first metal grid line and the second metal grid line have a projection on the substrate that at least partially overlaps with a projection of the pixel defining layer on the substrate. The width of the first metal grid line is 0.6-1.2 times the width of the pixel defining layer at a corresponding position. 34.The touch display panel of claim 32 or 33, wherein, The second touch metal layer is located between the first touch metal layer and the encapsulation layer, and includes a plurality of metal grid lines arranged in a cross shape. The metal grid lines in the second touch metal layer located in the first display area have a same width as the second metal grid line at a corresponding position. The metal grid lines in the second touch metal layer located in the second display area have a width that is less than or equal to the width of the first metal grid line at a corresponding position, and greater than the width of the second metal grid line. 35.The touch display panel of any one of claims 32-34, wherein, The first display area and the second display area are arranged along a first direction, or the first display area and the second display area are alternately arranged along the first direction and a second direction, and the first direction intersects the second direction.

36. A display device comprising: The touch display panel includes any one of claims 1-35.

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