Disclosure of Invention
In a first aspect, an embodiment of the present disclosure provides a display module, including a display area, where the display area includes a first area and a second area, the first area and the second area are arranged along a first direction, and the first area and the second area are connected;
wherein the display module comprises a display panel,
The touch control layer is positioned on the display side of the display panel and at least positioned in the first area;
a support member located at a back side of the display panel;
The support comprises a first support portion and a second support portion,
The first supporting part is positioned in the first area and can form a support for the first area;
The second supporting part is positioned in the second area and can form a support for the second area;
the modulus of the first supporting part is greater than that of the second supporting part;
The first region may be wound on a curved surface of a first radius and the second region may be wound on a curved surface of a second radius, the first radius being greater than the second radius.
In some embodiments, the first region includes at least one third region and at least one fourth region,
The third areas and the fourth areas are alternately arranged along the first direction, and any adjacent third areas and fourth areas are connected;
the first support portion comprises at least one first sub-portion and at least one second sub-portion,
The first sub-portion is located in the third region and is capable of forming a support for the third region;
the second sub-portion is located in the fourth region and is capable of forming a support for the fourth region;
The modulus of the first sub-portion is greater than the modulus of the second sub-portion;
the third region may be wound on a curved surface of a third radius, and the fourth region may be wound on a curved surface of a fourth radius, the third radius being greater than the fourth radius.
In some embodiments, the fourth radius is greater than the second radius;
the modulus of the second sub-portion is greater than the modulus of the second support portion.
In some embodiments, the first support comprises at least one support layer.
In some embodiments, the first sub-portion includes a first support layer and a second support layer, the first support layer and the second support layer being stacked in sequence in a direction away from the display panel;
The second sub-part comprises a third supporting layer and a fourth supporting layer, and the third supporting layer and the fourth supporting layer are sequentially overlapped along the direction far away from the display panel;
The first supporting part further comprises a connecting layer which is positioned between the first supporting layer and the second supporting layer and between the third supporting layer and the fourth supporting layer, wherein the connecting layer is respectively connected with the first supporting layer and the second supporting layer, and the connecting layer is respectively connected with the third supporting layer and the fourth supporting layer.
In some embodiments, the display area further includes a fifth area located between and respectively connected to the first area and the second area;
The support further comprises a third support portion,
The third supporting part is positioned in the fifth area and can form a support for the fifth area;
The modulus of the third supporting portion is larger than that of the second supporting portion and smaller than that of the first supporting portion, and gradually decreases along the direction from the first region to the second region.
In some embodiments, the touch layer includes a first portion and a second portion, the first portion being located in the first region and the second portion being located in the second region;
The first part comprises a first conductive layer and a second conductive layer, the first conductive layer and the second conductive layer are sequentially overlapped along the direction far away from the display panel, and a first insulating layer is arranged between the first conductive layer and the second conductive layer;
The second portion includes a third conductive layer co-located with the first conductive layer.
In some embodiments, the touch layer includes a first portion and a second portion, the first portion including at least one third portion and at least one fourth portion;
The third portion is located in the third zone, the fourth portion is located in the fourth zone, and the second portion is located in the second zone;
the third part comprises a first conductive layer and a second conductive layer, the first conductive layer and the second conductive layer are sequentially overlapped along the direction far away from the display panel, and a first insulating layer is arranged between the first conductive layer and the second conductive layer;
the second portion includes a third conductive layer co-located with the first conductive layer;
the fourth portion includes a fourth conductive layer that is co-located with the first conductive layer.
In some embodiments, the first sub-portion defines a plurality of openings therein,
A plurality of openings are arranged in the second sub-part,
A plurality of openings are arranged in the second supporting part,
The density of openings in the first sub-portion is less than the density of openings in the second sub-portion;
the density of openings in the second sub-portion is less than the density of openings in the second support portion.
In some embodiments, the shape of the opening comprises a bar,
The length directions of the openings in the first sub-part, the second sub-part and the second supporting part are parallel to each other;
the length direction of the opening in the first sub-portion, the second sub-portion, and the second support portion intersects the first direction.
In some embodiments, the shape of the first supporting layer includes a plane shape, and the second supporting layer is provided with a plurality of first openings;
a plurality of second openings are formed in the third supporting layer, and a plurality of third openings are formed in the fourth supporting layer;
The shapes of the first opening, the second opening and the third opening include a bar shape,
The length directions of the first opening, the second opening and the third opening are parallel to each other and cross the first direction;
orthographic projections of the second openings and the third openings on the display panel are sequentially and alternately arranged along the first direction.
In some embodiments, the first support portion has a plurality of openings formed therein,
A plurality of openings are arranged in the second supporting part,
A plurality of openings are arranged in the third supporting part,
The third supporting portion has an opening density greater than that of the first supporting portion and less than that of the second supporting portion;
The third support portion has an opening density gradually increasing in a direction from the first region to the second region.
In some embodiments, the material of the support member includes any one of stainless steel, aluminum alloy, carbon fiber, and polymer material.
In some embodiments, the second conductive layer includes a plurality of first electrodes, a plurality of second electrodes, and a plurality of first bridges,
The first electrode arrangements are in an array, and the second electrode arrangements are in an array;
The first electrode is positioned in an odd line, the second electrode is positioned in an even line, the first electrode is positioned in an even line, the second electrode is positioned in an odd line, the second electrode is positioned in an even column when the first electrode is positioned in an odd column, and the second electrode is positioned in an odd column when the first electrode is positioned in an even column;
the first bridge part is positioned between any two adjacent first electrodes along the row direction of the array, and the first bridge part is connected with the two adjacent first electrodes;
the first conductive layer includes a plurality of second bridge portions;
the orthographic projection of the second bridge part on the display panel is positioned between orthographic projections of two arbitrarily adjacent second electrodes on the display panel along the column direction of the array, and the second bridge part is connected with the two adjacent second electrodes;
the first bridge portion and the second bridge portion spatially intersect;
Each row of the first electrodes is connected with a first signal line, and each column of the second electrodes is connected with a second signal line.
In some embodiments, the third conductive layer includes a plurality of third electrodes and a plurality of fourth electrodes, a plurality of third signal lines, and a plurality of fourth signal lines;
the third electrode arrangements are in an array, and the fourth electrode arrangements are in an array;
The third electrode is positioned in an odd line, the fourth electrode is positioned in an even line, the third electrode is positioned in an even line, the fourth electrode is positioned in an odd line, the fourth electrode is positioned in an even column when the third electrode is positioned in an odd column, and the fourth electrode is positioned in an odd column when the third electrode is positioned in an even column;
Each row of the third electrodes is connected with one third signal line;
An odd or even number of the fourth electrodes in each column is connected with one third signal line; an even number or an odd number of the fourth electrodes of each column are connected to one of the fourth signal lines;
the fourth signal line and the third signal line connected to the third electrode are parallel to each other, and an extending direction thereof crosses the first direction;
a part of the third signal line connected with the fourth electrode is parallel to the fourth signal line, the other part of the third signal line is parallel to the fourth signal line, an included angle larger than 0 DEG is formed between the other part of the third signal line and the fourth signal line, and the other part of the third signal line and the first signal line are crossed;
orthographic projections of the third signal line and the fourth signal line on the display panel are not overlapped;
The fourth conductive layer and the third conductive layer have the same structure.
In some embodiments, the orthographic projection shape of the third electrode on the display panel includes any one of a rectangle, a polygon, a regular polygon, an ellipse, and a circle;
The orthographic projection shape of the fourth electrode on the display panel comprises any one of rectangle, polygon, regular polygon, ellipse and circle;
The length direction of the maximum radial dimension part of the orthographic projection of the third electrode on the display panel is parallel to the fourth signal line;
The length direction of the maximum radial dimension part of the orthographic projection of the fourth electrode on the display panel is parallel to the fourth signal line.
In a second aspect, an embodiment of the present disclosure further provides a display device, including the display module set described above;
The display module comprises a first area, a second area, a reel and a display module, wherein the first area is provided with a curved surface with a first radius and a curved surface with a second radius;
the display module can be wound on the scroll, the second area can be wound on the curved surface with the second radius, and the first area can be wound on the curved surface with the first radius;
the axis of the spool intersects a first direction in which the first and second zones are arranged.
In some embodiments, the spool includes a post and a spool shaft, the post is positioned in the spool shaft, and the axes of the post and spool shaft are parallel,
The cross section of the cylindrical shaft comprises a circular shape, and the cross section of the cylindrical shaft comprises an elliptical shape;
the second region may be wound around the post shaft,
The first region may be wound on an outer surface of the spool facing away from the post;
The outer surface of the cylinder shaft comprises a first surface area and a second surface area, the first surface area is connected with the second surface area, the curved surface radius of the first surface area is larger than the curved surface radius of the second surface area, and the curved surface radius of the second surface area is larger than the section radius of the cylinder shaft;
a third one of the first regions may be wrapped around the first surface region and a fourth one of the first regions may be wrapped around the second surface region.
In some embodiments, the length direction of the openings in the first sub-portion, the second sub-portion, and the second support portion in the display module is parallel to the axis of the scroll.
In a third aspect, an embodiment of the present disclosure further provides a driving method of the foregoing display device, where the driving method includes performing touch driving on a first portion of a touch layer in a display module of the display device when the display module performs display in an unfolded state;
And performing or not performing touch driving on the second part of the touch layer.
In some embodiments, when the display module displays in the unfolded state, the touch control driving is performed on the third part in the first part;
and performing or not performing touch control driving on the fourth part in the second part and the first part.
According to the display module provided by the embodiment of the disclosure, the first area is wound on the curved surface with the first radius, the second area is wound on the curved surface with the second radius, the first radius is larger than the second radius, when the display module is curled by 360 degrees or more, the strain accumulation of each film layer in the display module along with the increase of the number of curling turns can be effectively reduced, the curling performance of the display module is improved, the modulus of the first supporting part is larger than that of the second supporting part, and in the curling and unfolding processes of the display module, the supporting performance of the first supporting part on the first area is higher than that of the second supporting part on the second area, and the touch function is at least integrated in the first area, so that the pressing touch operation performance of the first area is improved.
According to the display device provided by the embodiment of the disclosure, the scroll is provided with the curved surface with the first radius and the curved surface with the second radius, the first radius is larger than the second radius, the first area is wound on the curved surface with the first radius, the second area is wound on the curved surface with the second radius, when the display module in the display device is curled for 360 degrees or more, the strain accumulation of each film layer in the display module along with the increase of the number of curling turns can be effectively reduced, the curling performance of the display module is improved, meanwhile, the modulus of the first supporting part in the display device is larger than the modulus of the second supporting part, and the supporting performance of the first supporting part on the first area is higher than the supporting performance of the second supporting part on the second area in the curling and unfolding processes of the display module, so that the touch function is at least integrated in the first area, and the pressing touch operation performance of the first area is improved.
Detailed Description
In order to enable those skilled in the art to better understand the technical solutions of the embodiments of the present disclosure, the following describes in further detail a display module, a display device and a driving method thereof according to the embodiments of the present disclosure with reference to the accompanying drawings and detailed description.
Embodiments of the present disclosure will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments shown may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The embodiments of the present disclosure are not limited to the embodiments shown in the drawings, but include modifications of the configuration formed based on the manufacturing process. Thus, the regions illustrated in the figures have schematic properties and the shapes of the regions illustrated in the figures illustrate specific shapes of the regions, but are not intended to be limiting.
In the related art, referring to fig. 1a, which is a schematic curling diagram of a curling display module in the related art, fig. 1b is a graph of a curling strain accumulation curve of a transparent optical adhesive layer in the related art display module along with the increase of the curling number, the curling degree of a curling display product (such as an OLED display product) is not less than 360 °, the strain accumulation of each film layer in the display product along with the increase of the curling degree, and the risk of separation failure between the film layers is increased, for example, in the curling display module 13, the strain of each film layer in the display module 13 is gradually accumulated along with the increase of the curling number. As shown in fig. 1b, the transparent optical adhesive layer between the display panel and the cover plate in the display module 13 has a main strain of 122% after the first winding, and a main strain of 133.17% after the third winding, and it can be seen that as the winding number increases, the strain of the film material has a cumulative effect, and the strain cumulative effect causes the strain of the film to increase, so that only a support member with a low modulus (e.g., 0.5-3 MPa) can be used for the support member on the back side of the display panel in the curled display module 13, which makes it difficult to perform operations such as pressing touch control in the unfolded state of the display module.
In order to solve the problems in the related art, in a first aspect, the disclosed embodiments provide a display module, referring to fig. 2a and 2b, fig. 2a is a schematic top view of the display module in the disclosed embodiments, fig. 2b is a cross-sectional view along the line AA' in fig. 2a, wherein the display module includes a display area 100, the display area 100 includes a first area 101 and a second area 102, the first area 101 and the second area 102 are arranged along a first direction X, the first area 101 and the second area 102 are connected, the display module includes a display panel 1, the touch layer 3 is located on a display side of the display panel 1 and is located at least in the first area 101, the support 2 is located on a back side of the display panel 1, the support 2 includes a first support 21 and a second support 22, the first support 21 is located in the first area 101 and can form a support for the first support, the second support 22 is located in the second area 102 and can form a support for the second support, a modulus of the first support 21 is greater than a modulus of the second support 22, the first support 21 can be wound on a first curved surface and a second curved surface can be larger than a first radius of the second curved surface 101.
The display module is a flexible OLED display module, and the flexible OLED display module can be wound on a reel. The second region 102 may be wound on a smaller radius spool or a smaller radius inner turn of the spool and the first region 101 may be wound on a larger radius spool or a larger radius outer turn of the spool. Modulus refers to the ratio of stress to strain of a material in a stressed state, and modulus is a physical quantity that measures the ability of the material to resist deformation.
In this embodiment, the first area 101 is wound on a curved surface with a first radius, the second area 102 is wound on a curved surface with a second radius, and the first radius is larger than the second radius, so that when the display module is curled by 360 ° or more, the strain accumulation of each film layer in the display module can be effectively reduced along with the increase of the number of curling turns, the curling performance of the display module is improved, and the modulus of the first supporting portion 21 is larger than the modulus of the second supporting portion 22, so that the supporting performance of the first supporting portion 21 on the first area 101 is higher than the supporting performance of the second supporting portion 22 on the second area 102 in the curling and expanding processes of the display module, and the touch function is integrated at least in the first area 101, thereby improving the pressing touch operation performance of the first area 101.
In some embodiments, the second radius is R1 and the first radius is ≡5R1. The modulus of the first support portion 21 ranges from 50 to 150MPa, and the modulus of the second support portion 22 ranges from 0.5 to 10MPa.
In some embodiments, the second radius R1 ranges in size from 3-5mm and the first radius is 15-30mm.
In some embodiments, referring to FIG. 2c, which is a cross-sectional view taken along section line BB' in FIG. 2a, the first region 101 comprises at least one third region 103 and at least one fourth region 104, the third region 103 and the fourth region 104 are alternately arranged along a first direction X and any adjacent third region 103 and fourth region 104 are connected, the first support portion 21 comprises at least one first sub-portion 211 and at least one second sub-portion 212, the first sub-portion 211 is located in and can support the third region 103, the second sub-portion 212 is located in and can support the fourth region 104, the modulus of the first sub-portion 211 is greater than the modulus of the second sub-portion 212, the third region 103 is windable on a curved surface of a third radius, the fourth region 104 is windable on a curved surface of a fourth radius, and the third radius is greater than the fourth radius.
Wherein the fourth region 104 may be wound on a reel surface of a smaller curved radius and the third region 103 may be wound on a reel surface of a larger curved radius.
By winding the third region 103 on a curved surface with a third radius, and winding the fourth region 104 on a curved surface with a fourth radius, the third radius is larger than the fourth radius, when the first region 101 is curled by 360 degrees or more, the strain accumulation of each film layer in the first region 101 along with the increase of the number of curling turns can be effectively reduced, the curling performance of the first region 101 is improved, and by making the modulus of the first sub-portion 211 larger than the modulus of the second sub-portion 212, the supporting performance of the first sub-portion 211 on the third region 103 is higher than the supporting performance of the second sub-portion 212 on the fourth region 104 in the curling and expanding processes of the first region 101, so that the touch function can be further integrated in the third region 103 in the first region 101, and the pressing touch operation performance of the third region 103 is improved.
In some embodiments, the fourth radius is greater than the second radius and the modulus of the second sub-portion 212 is greater than the modulus of the second support portion 22.
In some embodiments, the second radius is R1, and the third radius is greater than or equal to 5R1,1.5R1 and less than or equal to the fourth radius is less than or equal to 5R1. The modulus of the first sub-portion 211 ranges from 200 to 300MPa, the modulus of the second sub-portion 212 ranges from 10 to 100MPa, and the modulus of the second support portion 22 ranges from 0.5 to 10MPa.
In some embodiments, referring to fig. 2b and 2c, the first support 21 comprises at least one support layer.
In some embodiments, referring to fig. 2d, which is another cross-sectional view along the BB' cut line in fig. 2A, the first sub-portion 211 includes a first support layer 211A and a second support layer 211B, the first support layer 211A and the second support layer 211B are sequentially stacked in a direction away from the display panel 1, the second sub-portion 212 includes a third support layer 212A and a fourth support layer 212B, the third support layer 212A and the fourth support layer 212B are sequentially stacked in a direction away from the display panel 1, and the first support portion 21 further includes a connection layer 213 between the first support layer 211A and the second support layer 211B and between the third support layer 212A and the fourth support layer 212B, the connection layer 213 being connected to the first support layer 211A and the second support layer 211B, respectively, and the connection layer 213 being connected to the third support layer 212A and the fourth support layer 212B, respectively.
In some embodiments, the connecting layer 213 is made of an adhesive material, such as a pressure sensitive adhesive, and the connecting layer 213 has a certain flexibility, and can adhesively connect the first support layer 211A and the second support layer 211B together, and adhesively connect the third support layer 212A and the fourth support layer 212B together.
In some embodiments, referring to FIG. 2d, the modulus of the first subsection 211 is in the range of 300-500MPa and the modulus of the second subsection 212 is in the range of 100-150MPa.
In some embodiments, referring to fig. 3a, which is a schematic partial top view of one support member in an embodiment of the disclosure, fig. 3b, which is a schematic partial top view of another support member in an embodiment of the disclosure, fig. 3c, which is a schematic partial top view of yet another support member in an embodiment of the disclosure, a first sub-portion 211 having a plurality of openings 200 therein, a second sub-portion 212 having a plurality of openings 200 therein, a second support portion 22 having a plurality of openings 200 therein, the first sub-portion 211 having a density of openings less than the second sub-portion 212, and the second sub-portion 212 having a density of openings less than the second support portion 22.
By doing so, it is possible to realize that the modulus of the first sub-portion 211 is greater than the modulus of the second sub-portion 212, and the modulus of the second sub-portion 212 is greater than the modulus of the second support portion 22.
In some embodiments, the shape of the opening 200 includes a bar shape, the longitudinal directions of the opening 200 in the first sub-portion 211, the second sub-portion 212, and the second support portion 22 are parallel to each other, and the longitudinal directions of the opening 200 in the first sub-portion 211, the second sub-portion 212, and the second support portion 22 intersect with the first direction X.
In some embodiments, the length direction of the opening 200 is parallel to the axis of the spool, and the length direction of the opening 200 is perpendicular to the first direction X. By this arrangement, the windability of the support member 2 can be enhanced, and the amount of strain of the support member 2 during winding can be reduced.
In some embodiments, referring to fig. 2d and 3d, fig. 3d is a schematic partial top view of still another support in the embodiment of the disclosure, wherein the shape of the first support layer 211A includes a plane shape, the second support layer 211B has a plurality of first openings 201 formed therein, the third support layer 212A has a plurality of second openings 202 formed therein, the fourth support layer 212B has a plurality of third openings 203 formed therein, the shapes of the first openings 201, the second openings 202 and the third openings 203 include bar shapes, the length directions of the first openings 201, the second openings 202 and the third openings 203 are parallel to each other and intersect with the first direction X, and the front projections of the second openings 202 and the third openings 203 on the display panel 1 are alternately arranged in sequence along the first direction X.
In some embodiments, the front projection patterns of the third support layer 212A and the fourth support layer 212B on the display panel 1 are complementary, that is, a void (such as an opening) is formed in the third support layer 212A, and the front projection of the fourth support layer 212B on the display panel 1 coincides with the front projection of the void on the display panel 1. By this arrangement, on the one hand, the supporting strength of the second sub-portion 212 to the fourth region 104 can be ensured, and on the other hand, the windability of the second sub-portion 212 can be ensured, and the strain amount of the second sub-portion 212 during winding can be reduced.
It should be noted that the orthographic projections of the third support layer 212A and the fourth support layer 212B on the display panel 1 may also be partially overlapped.
In some embodiments, the length directions of the first, second, and third openings 201, 202, 203 are parallel to the axis of the spool, and the length directions of the first, second, and third openings 201, 202, 203 are perpendicular to the first direction X. By this arrangement, the windability of the support member 2 can be enhanced, and the amount of strain of the support member 2 during winding can be reduced.
In some embodiments, referring to fig. 3b, the display area 100 further comprises a fifth area 105 between the first area 101 and the second area 102 and connected to the first area 101 and the second area 102, respectively, the support 2 further comprises a third support 23, the third support 23 being located in the fifth area 105 and being capable of forming a support for it, the third support 23 having a modulus that is greater than the second support 22 and less than the first support 21, and gradually decreasing in the direction from the first area 101 to the second area 102. This ensures a smooth transition of the modulus of the support 2 along the first direction X, thereby ensuring a smooth transition of the crimping performance of the support 2 along the first direction X, while ensuring a smooth transition of the support performance of the support 2 along the first direction X for different areas within the display area 100.
In some embodiments, referring to fig. 3a and 3b, the first support portion 21 is provided with a plurality of openings, the second support portion 22 is provided with a plurality of openings, the third support portion 23 is provided with a plurality of openings, the opening density of the third support portion 23 is greater than the opening density of the first support portion 21 and less than the opening density of the second support portion 22, and the opening density of the third support portion 23 gradually increases along the direction from the first region 101 to the second region 102.
By doing so, it is possible to ensure that the modulus of the third support portion 23 is greater than the modulus of the second support portion 22 and less than the modulus of the first support portion 21, while ensuring that the modulus of the third support portion 23 gradually decreases in the direction from the first region 101 to the second region 102.
In some embodiments, the material of the support 2 includes any one of stainless steel, aluminum alloy, carbon fiber, and polymer material.
In some embodiments, referring to fig. 2b, the touch layer 3 includes a first portion 31 and a second portion 32, the first portion 31 is located in the first area 101, the second portion 32 is located in the second area 102, the first portion 31 includes a first conductive layer 311 and a second conductive layer 312, the first conductive layer 311 and the second conductive layer 312 are sequentially stacked in a direction away from the display panel 1 with a first insulating layer 313 disposed therebetween, and the second portion 32 includes a third conductive layer located in the same layer as the first conductive layer 311.
The touch sensitivity of the first portion 31 can be ensured by setting the first portion 31 as two stacked conductive layers, the impedance difference in touch can be increased, and the strain amount of the second portion 32 in the winding process can be reduced by setting the second portion 32 as one conductive layer, so that the bending fracture failure risk of the second portion 32 is reduced. By adopting different structural designs for the portion of the touch layer 3 located in the first area 101 and the portion of the touch layer 3 located in the second area 102, during touch, touch operation can be performed on only the first portion 31 located in the first area 101, so that the pressing touch operation performance of the first area 101 is improved, touch operation can be performed on both the first portion 31 located in the first area 101 and the second portion 32 located in the second area 102, and thus the touch performance of the touch layer 3 can be optimized.
In some embodiments, referring to fig. 2c and 2d, the touch layer 3 includes a first portion 31 and a second portion 32, the first portion 31 includes at least one third portion 33 and at least one fourth portion 34, the third portion 33 is located in the third region 103, the fourth portion 34 is located in the fourth region 104, the second portion 32 is located in the second region 102, the third portion 33 includes a first conductive layer 311 and a second conductive layer 312, the first conductive layer 311 and the second conductive layer 312 are stacked in sequence in a direction away from the display panel 1 with a first insulating layer 313 disposed therebetween, the second portion 32 includes a third conductive layer and is located in the same layer as the first conductive layer 311, and the fourth portion 34 includes a fourth conductive layer and is located in the same layer as the first conductive layer 311.
Wherein, by setting the third part 33 in the first part 31 as two superposed conductive layers, the touch sensitivity of the third part 33 can be ensured, the impedance difference in touch control can be increased, and by setting the second part 32 and the fourth part 34 in the first part 31 as one conductive layer, the strain amount of the second part 32 and the fourth part 34 in the winding process can be reduced, thereby reducing the bending fracture failure risk of the second part 32 and the fourth part 34. By making the touch layer 3 portion located in the third region 103 in the first region 101 and the touch layer 3 portion located in the second region 102 and the touch layer 3 portion located in the fourth region 104 in the first region 101 adopt different structural designs, during touch, only the third portion 33 located in the third region 103 can be subjected to touch operation, so that the pressing touch operation performance of the third region 103 is improved, and touch operations can be performed on the third portion 33 located in the third region 103, the second portion 32 located in the second region 102 and the fourth portion 34 located in the fourth region 104, so that the touch performance of the touch layer 3 can be optimized.
In some embodiments, referring to FIG. 4a, which is a top view of a touch layer in a display module according to an embodiment of the disclosure, FIG. 4b is a cross-sectional view of the touch layer along the line CC' in FIG. 4 a;
Fig. 4c is another structural top view of a touch layer in a display module according to an embodiment of the present disclosure, fig. 4d is another structural top view of a touch layer in a display module according to an embodiment of the present disclosure, fig. 4e is another structural top view of a touch layer in a display module according to an embodiment of the present disclosure, wherein the second conductive layer 312 includes a plurality of first electrodes 41, a plurality of second electrodes 42 and a plurality of first bridge portions 43, the plurality of first electrodes 41 are arranged in an array, the plurality of second electrodes 42 are arranged in an array, the first electrodes 41 are located in an even number row, the second electrodes 42 are located in an odd number column, the first electrodes 41 are located in an even number column, the second electrodes 42 are located in an odd number column, the first bridge portions 43 are located between any two adjacent first electrodes 41 along the row direction of the array, the first bridge portions 43 are connected with the adjacent two first electrodes 41, the first conductive layer 311 includes a plurality of second bridge portions 44, the second bridge portions 44 are located between any two adjacent first bridge portions 44 and the first bridge portions 4 are connected with the second electrode portions 1 along the row direction of the first bridge portions 4, and each second electrode 42 is located in the two adjacent first bridge portions 4 are located in the two front columns, and the signal projection lines of the first electrode 4 and the second electrode 4 is located between the adjacent two front bridge portions are located between the two adjacent two front columns 1 front columns in the two front columns are located between the two front columns.
The above-mentioned structure arrangement of the first conductive layer 311 and the second conductive layer 312 can realize mutual capacitive touch control of the first portion 31 of the touch control layer 3.
In some embodiments, the third conductive layer includes a plurality of third electrodes 45 and a plurality of fourth electrodes 46, a plurality of third signal lines 7, and a plurality of fourth signal lines 8; the third electrodes 45 are arranged in an array, and the fourth electrodes 46 are arranged in an array; the third electrode 45 is located in an odd-numbered row, the fourth electrode 46 is located in an even-numbered row, the fourth electrode 46 is located in an odd-numbered row, the third electrode 45 is located in an odd-numbered column, the fourth electrode 46 is located in an even-numbered column, the third electrode 45 is located in an odd-numbered column, each column of the third electrode 45 is connected with one third signal line 7, an odd number or an even number of each column of the fourth electrode 46 is connected with one third signal line 7, an even number or an odd number of each column of the fourth electrode 46 is connected with one fourth signal line 8, the fourth signal line 8 and the third signal line 7 connected with the third electrode 45 are parallel to each other and extend in a direction intersecting with the first direction X, one section of the third signal line 7 connected with the fourth electrode 46 and the fourth signal line 8 are parallel to each other, the other section of the third section and the fourth signal line 8 extend in an angle larger than 0 DEG, the other section of the third section and the first direction X intersect with each other, the third signal line 7 and the fourth signal line 8 overlap each other, and the fourth signal line 8 overlap each other on the display panel 1, and the fourth conductive layer has the same positive conductive structure.
Wherein the extending direction of the fourth signal line 8 and the third signal line 7 connected to the third electrode 45 may be parallel to the axis of the reel, so that the amount of strain of the fourth signal line 8 and the third signal line 7 connected to the third electrode 45 during winding can be reduced, thereby improving or avoiding the risk of breakage of the fourth signal line 8 and the third signal line 7 connected to the third electrode 45 during winding. By making the extending direction of the third signal line 7 and the fourth signal line 8 connected to the fourth electrode 46 form an angle larger than 0 ° and cross the first direction X, the third signal line 7 connected to the fourth electrode 46 and the third electrode 45 on the same conductive layer can be prevented from being connected, so that mutual capacitance can be formed between the third electrode 45, the fourth electrode 46 connected to the third signal line 7 and the fourth electrode 46 connected to the fourth signal line 8, and mutual capacitance touch of the second portion 32 and mutual capacitance touch of the fourth portion 34 of the touch layer 3 can be realized.
In some embodiments, the front projection shape of the third electrode 45 on the display panel 1 includes any one of a rectangle, a polygon, a regular polygon, an ellipse, and a circle, the front projection shape of the fourth electrode 46 on the display panel 1 includes any one of a rectangle, a polygon, a regular polygon, an ellipse, and a circle, the length direction of the largest radial dimension portion of the front projection of the third electrode 45 on the display panel 1 is parallel to the fourth signal line 8, and the length direction of the largest radial dimension portion of the front projection of the fourth electrode 46 on the display panel 1 is parallel to the fourth signal line 8.
Wherein, since the extending direction of the fourth signal line 8 may be parallel to the axis of the reel, by making the length direction of the largest radial dimension portion of the orthographic projection of the third electrode 45 on the display panel 1 parallel to the fourth signal line 8, and the length direction of the largest radial dimension portion of the orthographic projection of the fourth electrode 46 on the display panel 1 parallel to the fourth signal line 8, the amounts of strain of the largest radial dimension portion of the third electrode 45 and the largest radial dimension portion of the fourth electrode 46 during the winding process can be reduced, thereby improving or avoiding the risk of breakage of the third electrode 45 and the fourth electrode 46 during the winding process.
In some embodiments, referring to fig. 2 b-2 d, in a direction perpendicular to the display panel 1, the display area 100 of the display panel 1 may include a substrate 10, and a circuit structure layer 20, a light emitting structure layer 30, a package structure layer 40, and a touch layer 3 sequentially disposed on the substrate 10. The circuit structure layer 20 may include at least a plurality of pixel circuits of sub-pixels, and the pixel circuit of each sub-pixel may include a plurality of transistors and at least one capacitor. The light emitting structure layer 30 may include at least light emitting elements of a plurality of sub-pixels.
In some embodiments, the plurality of transistors in the pixel circuit may each employ a low temperature polysilicon thin film transistor or each employ an oxide thin film transistor. In some embodiments, the plurality of transistors in the pixel circuit may employ low temperature polysilicon thin film transistors and oxide thin film transistors. In addition, the display panel 1 in this embodiment integrates a mutual capacitive touch structure, such as a FMLOC (Flexible Multi Layer On Cell) structure.
In some embodiments, referring to fig. 2 b-2 d, each sub-pixel is illustrated as comprising a thin film transistor 11 and a capacitor 12. The circuit structure layer 20 of the display area 100 may include a semiconductor layer, a first gate metal layer, a second gate metal layer, a first source drain metal layer, and a second source drain metal layer disposed on the substrate 10. A first gate insulating layer 111 may be disposed between the semiconductor layer and the first gate metal layer, a second gate insulating layer 112 may be disposed between the first gate metal layer and the second gate metal layer, an interlayer insulating layer 113 may be disposed between the second gate metal layer and the first source drain metal layer, a first planarization layer 114 may be disposed between the first source drain metal layer and the second source drain metal layer, and a second planarization layer 115 may be disposed on a side of the second source drain metal layer away from the substrate 10. The first gate insulating layer 111, the second insulating layer 112, and the interlayer insulating layer 113 may be inorganic insulating layers, and the first planarization layer 114 and the second planarization layer 115 may be organic insulating layers.
The semiconductor layer of the display region 100 may include at least the active layer 210 of the thin film transistor 11. The active layer 210 of the thin film transistor 11 may include a source region 2101, a drain region 2102, and a channel region 2100 between the source region 2101 and the drain region 2102. The first gate metal layer may include at least the gate 116 of the thin film transistor 11 and the first plate 121 of the capacitor 12. The orthographic projection of the gate 116 of the thin film transistor 11 on the substrate 10 may cover the orthographic projection of the channel region 2100 of the active layer 210 on the substrate 10. The second gate metal layer may include at least a second plate 122 of the capacitor 12. The second plate 122 and the first plate 121 of the capacitor 12 may at least partially overlap in the orthographic projection of the substrate 10, e.g., the two may coincide. The first source drain metal layer may include at least a source electrode 117 and a drain electrode 118 of the thin film transistor 11. The interlayer insulating layer 113 may be provided with a plurality of via holes (e.g., including a first pixel via hole and a second pixel via hole) in the display region 100, the interlayer insulating layer 113, the second gate insulating layer 112, and the first gate insulating layer 111 in the first pixel via hole may be removed to expose at least a portion of the surface of the source region 2101 of the active layer 210, and the interlayer insulating layer 113, the second gate insulating layer 112, and the first gate insulating layer 111 in the second pixel via hole may be removed to expose at least a portion of the surface of the drain region 2102 of the active layer 210. The source electrode 117 of the thin film transistor 11 may be electrically connected to the source region 2101 of the active layer 210 through a first pixel via, and the drain electrode 118 may be electrically connected to the drain region 2102 of the active layer 210 through a second pixel via. The second source drain metal layer may include at least the first switching electrode 231. The first switching electrode 231 may be electrically connected to the drain electrode 118 of the thin film transistor 11 of the pixel circuit through a third pixel via hole formed in the first planarization layer 114. The electrical connection between the pixel circuit and the light emitting element can be achieved through the first switching electrode 231.
In some embodiments, referring to FIGS. 2 b-2 d, the light emitting structure layer 30 of the display region may include a pixel definition layer 304 and a plurality of light emitting elements. For example, each light emitting element may include an anode 301, an organic light emitting layer 302, and a cathode 303 stacked. The anode 301 may be disposed on the second flat layer 115 and electrically connected to the first switching electrode 231 through a fourth pixel via hole formed in the second flat layer 115. The pixel defining layer 304 is disposed on the anode 301 and the second flat layer 115, and the pixel defining layer 304 may be provided with a plurality of pixel openings, and one pixel opening may expose at least a portion of the surface of a corresponding one of the anodes 301. At least a portion of the organic light emitting layer 302 may be disposed within one pixel opening and connected to a corresponding anode 301. The cathode 303 may be disposed on the organic light emitting layer 302 and connected to the organic light emitting layer 302. The organic light emitting layer 302 may emit light of a corresponding color under the driving of the anode 301 and the cathode 303. The side of the pixel defining layer 304 remote from the substrate 10 may also be provided with a display spacer layer, which may include a plurality of display spacer layers.
In some embodiments, referring to FIGS. 2 b-2 d and 4f, in a direction perpendicular to the display panel 1, the touch layer 3 of the display area 100 may include a Touch Buffer Layer (TBL) 501, a first conductive layer 311 (TMA), a first insulating layer (TLD) 313, a second conductive layer 312 (TMB) and a protective layer 503 (TOC) sequentially stacked in a direction away from the display panel 1. For example, the touch buffer layer 501 and the first insulating layer 313 may be inorganic insulating layers, and the protective layer 503 may be an organic insulating layer. Referring to fig. 4f, the first conductive layer 311 and the second conductive layer 312 are located in a non-pixel opening area within the display area 100, i.e., the first conductive layer 311 and the second conductive layer 312 avoid the pixel opening in the pixel defining layer 304, preventing the patterns of the first conductive layer 311 and the second conductive layer 312 from being blocked. It should be noted that, referring to fig. 2b to 2d, the first conductive layer 311 and the second conductive layer 312 may also be in a grid shape, so that the first conductive layer 311 and the second conductive layer 312 may also be disposed in the pixel opening region. The first conductive layer 311 and the second conductive layer 312 are both metal films, including but not limited to copper, nickel, and the like.
In some embodiments, referring to fig. 2 b-2 d, the encapsulation structure layer 40 includes a first inorganic layer 401, an organic layer 402, and a second inorganic layer 403 sequentially stacked in a direction away from the display panel 1.
In some embodiments, referring to fig. 2 b-2 d, a polarizer 14, a transparent optical adhesive 15, and a cover plate 16 are further disposed on a side of the protective layer 503 facing away from the substrate 10, and the polarizer 14, the transparent optical adhesive 15, and the cover plate 16 are sequentially stacked in a direction away from the display panel 1.
In some embodiments, referring to fig. 4f, which is a schematic top view of another display module according to an embodiment of the disclosure, each conductive layer in the touch layer 3 may avoid the pixel opening 17, for example, in a non-pixel opening area, so as to prevent shading. The first signal line 5 and the third signal line 7 are led out from the display area 100 to the frame wiring area 106 and are electrically connected with the touch driving chip for transmitting touch sensing signals, and the second signal line 6 and the fourth signal line 8 are led out from the display area 100 to the frame wiring area 106 and are electrically connected with the touch driving chip for transmitting touch driving signals.
According to the display module provided by the embodiment of the disclosure, the first area is wound on the curved surface with the first radius, the second area is wound on the curved surface with the second radius, the first radius is larger than the second radius, when the display module is curled by 360 degrees or more, the strain accumulation of each film layer in the display module along with the increase of the number of curling turns can be effectively reduced, the curling performance of the display module is improved, the modulus of the first supporting part is larger than that of the second supporting part, and in the curling and unfolding processes of the display module, the supporting performance of the first supporting part on the first area is higher than that of the second supporting part on the second area, and the touch function is at least integrated in the first area, so that the pressing touch operation performance of the first area is improved.
In a second aspect, the disclosed embodiment provides a display device, referring to fig. 2a, 3b, 3d, 4a, 4c, 4d and 4e, including the display module in the above embodiment, further including a scroll 9 located at a side of a second region 102 of the display module, which is far from the first region 101, the scroll 9 having a curved surface with a first radius and a curved surface with a second radius, the first radius being larger than the second radius, the display module being windable on the scroll 9, and the second region 102 being windable on the curved surface with the second radius, the first region 101 being windable on the curved surface with the first radius, and an axis of the scroll 9 intersecting a first direction X in which the first region 101 and the second region 102 are arranged.
By enabling the scroll 9 to have a curved surface with a first radius and a curved surface with a second radius, the first radius is larger than the second radius, and the first area 101 can be wound on the curved surface with the first radius, and the second area 102 can be wound on the curved surface with the second radius, when the display module in the display device is curled 360 degrees or more, the strain accumulation of each film layer in the display module along with the increase of the number of curling turns can be effectively reduced, the curling performance of the display module is improved, meanwhile, the modulus of the first supporting part 21 in the display device is larger than the modulus of the second supporting part 22, and in the curling and unfolding processes of the display module, the supporting performance of the first supporting part 21 on the first area 101 is higher than the supporting performance of the second supporting part 22 on the second area 102, and the touch function is at least integrated in the first area 101, so that the pressing touch operation performance of the first area 101 is improved.
In some embodiments, referring to FIG. 5a, which is a schematic structural view of a spool in an embodiment of the present disclosure, FIG. 5b is a schematic cross-sectional view of the spool perpendicular to its axial direction in an embodiment of the present disclosure, spool 9 comprises a post 91 and a barrel 92, post 91 is located in barrel 92, the axes of post 91 and barrel 92 are parallel, the cross-sectional shape of post 91 comprises a circular shape, the cross-sectional shape of barrel 92 comprises an oval shape, a second region 102 can be wound on post 91, a first region 101 can be wound on an outer surface of barrel 92 facing away from post 91, the outer surface of barrel 92 comprises a first surface region 921 and a second surface region 922, the first surface region 921 and second surface region 922 are connected, the radius of curvature of first surface region 921 is greater than the radius of curvature of second surface region 922, the radius of curvature of second surface region is greater than the cross-sectional radius of post 91, a third region 103 in first region 101 can be wound on first surface region 921, and a fourth region 104 in first region 101 can be wound on second surface region 922.
In some embodiments, the shaft surfaces of the cylinder shaft 92 and the cylinder shaft 91 are in contact in the axial direction, and the cylinder shaft 92 is provided with a slit opening at a contact position with the cylinder shaft 91, through which the display module can extend from the cylinder shaft 91 surface to the cylinder shaft 92 surface, so that the display module protrudes from the slit opening and is wound onto the cylinder shaft 92 surface after being wound on the cylinder shaft 91.
In some embodiments, referring to fig. 3 a-3 d, the length direction of the opening 200 in the first sub-portion 211, the second sub-portion 212 and the second support portion 22 in the display module is parallel to the axis of the scroll 9. By this arrangement, the windability of the support member 2 can be enhanced, and the amount of strain of the support member 2 during winding can be reduced.
In some embodiments, referring to fig. 6, a schematic structural diagram of a support rail sliding structure in an embodiment of the disclosure is shown, wherein a support rail sliding structure 18 is disposed at an end position of a spool 9, and a sliding post 24 is disposed at an end position of a support 2 corresponding to two ends of the spool 9, wherein the sliding post 24 is embedded in the rail sliding structure 18 and can slide along the rail sliding structure 18, so as to ensure a winding radius of the support 2 when winding on the spool 9.
Based on the above structure of the display device, the embodiment of the disclosure further provides a driving method of the display device, wherein the driving method comprises performing touch driving on a first portion of a touch layer in a display module when the display module in the display device is displayed in an unfolded state, and performing or not performing touch driving on a second portion of the touch layer.
In some embodiments, when the display module displays in the unfolded state, the third part of the first part is driven in a touch manner, and the fourth part of the second part and the first part is driven in or out of the touch manner.
In some embodiments, when the display module performs display in the winding state, the third portion of the touch layer wound on the outermost ring of the reel is touch-driven, and the fourth portion of the touch layer wound on the outermost ring of the reel is or is not touch-driven.
According to the display device provided by the embodiment of the disclosure, the scroll is provided with the curved surface with the first radius and the curved surface with the second radius, the first radius is larger than the second radius, the first area is wound on the curved surface with the first radius, the second area is wound on the curved surface with the second radius, when the display module in the display device is curled for 360 degrees or more, the strain accumulation of each film layer in the display module along with the increase of the number of curling turns can be effectively reduced, the curling performance of the display module is improved, meanwhile, the modulus of the first supporting part in the display device is larger than the modulus of the second supporting part, and the supporting performance of the first supporting part on the first area is higher than the supporting performance of the second supporting part on the second area in the curling and unfolding processes of the display module, so that the touch function is at least integrated in the first area, and the pressing touch operation performance of the first area is improved.
The display device provided by the embodiment of the disclosure can be any product or component with a display function, such as an OLED panel, an OLED television, an OLED billboard, a display, a mobile phone, a navigator and the like.
It is to be understood that the above embodiments are merely exemplary embodiments employed to illustrate the principles of the present disclosure, however, the present disclosure is not limited thereto. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the disclosure, and are also considered to be within the scope of the disclosure.