Patent Description:
With the development of the display technology, the size of the smart terminal device such as the mobile phone, the tablet computer, and the lap top computer is getting larger and larger, which is very convenient to use, but it is very inconvenient to take and carry them due to the large screen. Therefore, the bending device, the folding device, and even the rollable device have become a hot research topic. The folding of the display device includes the folding of the display screen and the folding of the touch screen. Currently, the Organic Light-Emitting Diode (OLED) display screen has been developed rapidly, the folding of the display screen has been achieved in some extent, and corresponding prototypes from some companies are available in the market.

<CIT> discloses an apparatus, which comprises a substrate comprising at least a first region and a second region, the first region more flexible than the second region; a first layer disposed over the first region, the first layer comprising plural first units; and a second layer disposed over the first layer, the second layer comprising plural second units, wherein an area of at least one unit of the plural first units is greater than an area of at least one unit of the plural second units.

<CIT> discloses a capacitive sensor array comprising a first set of sensor electrodes each comprising one or more large subelements and a second set of sensor electrodes each comprising one or more small subelements. Each of the small subelements are smaller than any of the large subelements, and the first set of sensor electrodes and the second set of sensor electrodes are formed from a single layer of conductive material. The surface area of the capacitive sensor array is divisible into a grid of N×M unit cells, wherein each of the N×M unit cells contains one of the large subelements and k of the small subelements, where k is greater than or equal to <NUM>.

<CIT> discloses a touch panel and a method of arranging electrodes thereof. The touch panel includes a plurality of touch patterns. The touch patterns are arranged in an array and respectively include a first transmitter electrode, a second transmitter electrode, and a plurality of receiver electrodes. The second transmitter electrode is parallel to the first transmitter electrode. The receiver electrodes are disposed between the first transmitter electrode and the second transmitter electrode and are respectively adjacent to the first transmitter electrode and the second transmitter electrode. The first transmitter electrode, the second transmitter electrode, and the receiver electrodes do not overlap each other. The first transmitter electrodes of the touch patterns are not connected with each other. The second transmitter electrodes of the touch patterns are not connected with each other.

<CIT> discloses a touch panel, which includes: a first electrode pattern arranged in a first direction, including a plurality of first electrode cells that are physically separated from each other; a second electrode pattern arranged in a second direction crossing the first direction, including a plurality of second electrode cells that are physically separated from each other; first touch signal lines connected to the first electrode cells; and second touch signal lines connected to the second electrode cells. The electrode patterns and the touch signal lines are arranged on the same layer on a substrate such that a first virtual connection line for connecting centers of second electrode cells of a first group corresponding to an n-th first electrode cell crosses a second virtual connection line for connecting centers of second electrode cells of a second group corresponding to an (n+<NUM>)-th first electrode cell.

<CIT> discloses an input device that includes a plurality of sensing elements that are interconnected in desired way to acquire positional information of an input object, so that the acquired positional information can be used by other system components to control a display or other useful system components.

<CIT> discloses a touch panel, a touch positioning method thereof and a display device. In the touch panel, a plurality of self-capacitive electrodes are divided into several self-capacitive electrode groups independent of each other and several independent self-capacitive electrodes; each of the self-capacitive electrode groups includes at least two self-capacitive electrodes not adjacent to each other, and the respective self-capacitive electrodes in a same self-capacitive electrode group are electrically connected with a touch chip through a same wire, and at least the self-capacitive electrodes located on the four adjacent positions of upper, lower, left and right sides of the respective self-capacitive electrodes in the respective self-capacitive electrode groups are independent self-capacitive electrodes. The touch panel has a decreased number of wires for electrically connecting the self-capacitive electrodes with the touch chip, and a decreased number of lead-out wires of the touch panel and a decreased number of wiring terminals of the touch chip.

<CIT> discloses a display device including a display panel and an input sensing unit. The input sensing unit includes at least one insulation layer, an electrode, and an auxiliary electrode. The electrode includes sensor parts including a metal and having a mesh shape and connection parts connecting adjacent sensor parts of the sensor parts to each other. The auxiliary electrode overlaps the sensor parts, is connected to the sensor parts, and includes transparent conductive oxide.

<CIT> discloses a flexible touch screen fold along middle. The flexible touch screen has a window region with a touch function, a folded section, and a non-window region for arranging leads. A part of the electrodes located at the folded section is made of transparent electrode material with a bending resistance. Because the electrodes of the folded section are made of the material with a bending resistance, the bending stress of the electrodes at the folded area of the flexible touch display panel can be improved, and the service life of the flexible touch display panel can be increased.

<CIT> discloses a touch sensing module which comprises a substrate and sensing layers. The substrate is provided with a first zone, a second zone and a bendable zone, the bendable zone is arranged between the first zone and the second zone, and the touch sensing module can be in a folded state and an unfolded state under the effect of the foldable zone; the sensing layers are arranged under the substrate and include a first pattern sensing layer and a second pattern sensing layer, the first pattern sensing layer at least corresponds to the first zone, and the second pattern sensing layer at least corresponds to the second zone.

It is an object of the present disclosure to provide a touch screen, a touch display screen and a display device.

The object is achieved by the features of the independent claim <NUM>.

Hereinafter, the drawings accompanying embodiments of the present disclosure are simply introduced in order to more clearly explain technical solution(s) of the embodiments of the present disclosure. Obviously, the described drawings below are merely related to some of the embodiments of the present disclosure without constituting any limitation thereto.

In order to make objectives, technical details and advantages of the embodiments of the present disclosure apparent, the technical solutions of the embodiments will be described in a clearly and fully understandable way in connection with the drawings related to the embodiments of the present disclosure.

Unless otherwise defined, all the technical and scientific terms used herein have the same meanings as commonly understood by one of ordinary skill in the art to which the present disclosure belongs. The terms "first," "second," etc., which are used in the present disclosure, are not intended to indicate any sequence, amount or importance, but distinguish various components. Also, the terms "comprise," "comprising," "include," "including," etc., are intended to specify that the elements or the objects stated before these terms encompass the elements or the objects and equivalents thereof listed after these terms, but do not preclude the other elements or objects. The phrases "connect", "connected", etc., are not intended to define a physical connection or mechanical connection, but may include an electrical connection, directly or indirectly. The terms "on," "under," "right," "left" and the like are only used to indicate relative position relationship, and when the position of the described object is changed, the relative position relationship may be changed accordingly.

The inventor(s) have found that, in a touch display device, a touch layer / touch structure is usually a film layer far from a center of an OLED touch display device. In the case where the touch display device is a foldable device, the touch layer/ touch structure has a large bending radius, poor bending endurance, and is prone to generate creases after being bent many times, even cause touch failure, which affects the normal use of the touch display device.

<FIG> is a schematic diagram illustrating a foldable touch screen. As illustrated in <FIG>, the touch screen includes a non-bendable region <NUM> and a bendable region <NUM>. Touch structures are disposed in the non-bendable region <NUM> and the bendable region <NUM>. The non-bendable region <NUM> includes a first region <NUM> and a second region <NUM>. The first region <NUM> and the second region <NUM> are both flat regions. The bendable region <NUM> is located between the first region <NUM> and the second region <NUM>. The touch screen can be in a flat state and a folded state. The touch screen illustrated in <FIG> is in the folded state. When the touch screen is in the folded state, the bendable region <NUM> is in a curved state and has a curved structure. When the touch screen is in the flat state, the bendable region <NUM> is in a planar state and has a planar structure. During repeatedly folding or bending the touch screen, the touch structure located in the bendable region <NUM> is prone to peel or break, thereby causing touch failure.

At least one embodiment of the present disclosure provides a touch screen. The touch structure of the bendable region is not limited by a bending direction, which can improve the bending endurance of the touch screen, increase the touch reliability of the touch screen, and prolong the life-time of the touch screen.

<FIG> is a schematic top view illustrating a touch screen provided by an embodiment of the present disclosure. As illustrated in <FIG>, the touch screen includes a first region <NUM> and a second region <NUM>. The first region <NUM> can be bent, and the touch screen can be in a flat state or in a folded state.

For example, the first region <NUM> is in a flat state when the touch screen is in the flat state and is in the curved state when the touch screen is in the folded state. The touch screen includes a touch structure. The touch structure of the touch screen may have a touch structure located in the first region <NUM> and a touch structure located in the second region <NUM>.

As illustrated in <FIG>, the second region <NUM> includes a first sub-region <NUM> and a second sub-region <NUM>. Of course, the number of sub-regions included in the second region <NUM> is not limited to that illustrated in <FIG>. In other embodiments of the present disclosure, the second region <NUM> may include one sub-region or may include three or more sub-regions. That is, the second region <NUM> includes at least one sub-region in the embodiment of the present disclosure.

As illustrated in <FIG>, the second region <NUM> is connected with the first region <NUM>. For example, the second region <NUM> is a non-bendable region. In the case where the second region <NUM> includes a first sub-region <NUM> and a second sub-region <NUM>, the first sub-region <NUM> and the second sub-region <NUM> may be arranged at both sides of the first region <NUM>, respectively. That is, the first region <NUM> is located between the first sub-region <NUM> and the second sub-region <NUM>.

<FIG> illustrates a schematic top view when the touch screen is in the flat state. When the touch screen is in the flat state, the first region may be of a flat shape. A bending axis <NUM> of the first region is also illustrated in <FIG>. The bending axis <NUM> is an axis which the touch screen is bent around when bending the touch screen, and whether the touch screen is in the flat state or in the folded state, the axis which the touch screen is bent around can be referred to as the bending axis <NUM>.

<FIG> is a schematic top view illustrating a touch screen provided by an embodiment of the present disclosure. <FIG> illustrates a plurality of first touch electrodes <NUM> located in the first sub-region <NUM> and a plurality of second touch electrodes <NUM> located in the first sub-region <NUM>. The plurality of first touch electrodes <NUM> are intersected with and insulated from the plurality of second touch electrodes <NUM>. For example, an insulation layer may be provided between the plurality of first touch electrodes <NUM> and the plurality of second touch electrodes <NUM>. For example, the plurality of first touch electrodes <NUM> are parallel with each other, and the plurality of second touch electrodes <NUM> are parallel with each other. The touch structure of the second sub-region <NUM> may be referred to the touch structure of the first sub-region <NUM>. Of course, this embodiment of the present disclosure is illustrated with reference to the touch structures of the first sub-region <NUM> and the second sub-region <NUM> illustrated in <FIG>, by way of example, without limited thereto. The touch structure of the second region in the form of the first sub-region <NUM> and the second sub-region <NUM> as an example can be designed as required. For example, the first touch electrode <NUM> may also be referred to as a first touch group, and the second touch electrode <NUM> may also be referred to as a second touch group.

<FIG> is a schematic top view illustrating a touch screen provided by an embodiment of the present disclosure. As illustrated in <FIG>, in order to achieve that the first region <NUM> is not limited by a bending direction, the first region <NUM> includes a plurality of first touch patterns <NUM> arranged in an array in a first direction D1 and a second direction D2. The plurality of first touch patterns <NUM> are in the same layer, and adjacent first touch patterns <NUM> are insulated from each other. For example, the first region <NUM> includes a plurality of first touch patterns <NUM> arranged in an array in the first direction D1 and the second direction D2 when the touch screen is in the flat state. The first direction D1 is intersected with the second direction D2. For example, the first direction D1 is perpendicular to the second direction D2, without limited thereto. For example, the first direction D1 is the direction of the bending axis <NUM> of the first region <NUM>, and the second direction D2 is a direction that is intersected with the bending axis <NUM> when the touch screen is in the flat state. For example, the second direction D2 is a direction perpendicular to the bending axis <NUM> when the touch screen is in the flat state. For example, the first region <NUM> is flat when the touch screen is in the flat state.

In the touch screen provided by at least one embodiment of the present disclosure, different touch structures are disposed in different regions, by providing a plurality of first touch patterns <NUM> arranged in an array in the bendable first region, the first region <NUM> of the touch screen is not limited by the bending direction, and thus it is not necessary to limit an extending direction of the first touch pattern <NUM>. The plurality of first touch patterns <NUM> can be disposed in the same layer to obtain a single-layer pattern touch in the bendable region, thereby reducing the stress of the film, reducing the peeling or breakage of the touch structure in the bendable region, effectively protecting the touch screen from damage during bending, reducing touch failure and increasing touch reliability.

As illustrated in <FIG>, in one or more embodiments of the present disclosure, the first sub-region <NUM> includes a plurality of first touch groups <NUM> and a plurality of second touch groups <NUM>. The plurality of first touch groups <NUM> and the plurality of second touch groups <NUM> are insulated from each other and are intersected with each other. Each of the plurality of first touch groups <NUM> includes a plurality of second touch patterns <NUM>, and each of the plurality of second touch groups <NUM> includes a plurality of third touch patterns <NUM>.

As illustrated in <FIG>, in one or more embodiments of the present disclosure, the plurality of second touch patterns <NUM> and the plurality of third touch patterns <NUM> are located in the same layer. For example, the plurality of second touch patterns <NUM> and the plurality of third touch patterns <NUM> are formed from the same film layer by the same patterning process. Further, for example, the plurality of first touch patterns <NUM>, the plurality of second touch patterns <NUM> and the plurality of third touch patterns <NUM> are located in the same layer and are formed from the same film layer by the same patterning process, without limited thereto. For example, as illustrated in <FIG>, adjacent second touch patterns <NUM> are directly connected by a connection line <NUM>, and adjacent third touch patterns <NUM> are connected by a bridge line <NUM>. In one embodiment, the connection line <NUM>, the plurality of first touch patterns <NUM>, the plurality of second touch patterns <NUM> and the plurality of third touch patterns <NUM> are located in the same layer, and are formed from the same film layer by the same patterning process. In another embodiment, the connection line <NUM>, the plurality of second touch patterns <NUM> and the plurality of third touch patterns <NUM> are located in the same layer and are formed from the same film layer by the same patterning process; and the plurality of first touch patterns <NUM> and the bridge line <NUM> are located in the same layer and are formed from the same film layer by the same patterning process. When a bridge line is used in the touch structure of the second region, the touch structure of the second region is a double-layer structure and is not a single-layer structure.

As illustrated in <FIG>, in one or more embodiments of the present disclosure, the touch screen further includes a base substrate <NUM> which includes a first region <NUM> and a second region <NUM>. The first region <NUM> can be bent, and the first region <NUM> is in a flat state when the touch screen is in a flat state and is in a curved state when the touch screen is in a folded state. The second region <NUM> includes a first sub-region <NUM> and a second sub-region <NUM>. The first sub-region <NUM> includes a plurality of first touch groups <NUM> and a plurality of second touch groups <NUM>. The plurality of first touch groups <NUM> and the plurality of second touch groups <NUM> are located on the base substrate <NUM>. Each of the plurality of first touch groups <NUM> includes a plurality of second touch patterns <NUM>, and each of the plurality of second touch groups <NUM> includes a plurality of third touch patterns <NUM>. Adjacent second touch patterns <NUM> are directly connected by a connection line <NUM>, and adjacent third touch patterns <NUM> are connected by a bridge line <NUM>. The touch structure of the second sub-region <NUM> can be referred to the touch structure of the first sub-region <NUM>. As illustrated in <FIG>, the bridge line <NUM> is intersected with the connection line <NUM>. An orthographic projection of the bridge line <NUM> is not overlapped with an orthographic projection of one of the plurality of second touch patterns <NUM> on the base substrate <NUM>, without limited thereto. For example, the base substrate <NUM> includes a flexible substrate. For example, a material of the base substrate <NUM> includes polyimide (PI).

For example, the first touch pattern <NUM> illustrated in <FIG> may have a mesh structure, so that the line forming the mesh of the first touch pattern <NUM> can be not arranged in a region where the pixel is located, thereby improving the aperture ratio, and reducing the peeling or breakage of the touch structure of the bendable region, effectively protecting the touch screen from damage during bending, improving the bending endurance of the touch structure in the first region, and increasing the touch reliability. For example, the first touch pattern <NUM> may have a mesh structure including a plurality of first conductive lines <NUM> intersected with each other (referring to <FIG>). In addition, the first touch pattern <NUM> has the mesh structure, which is beneficial to the first region of the touch screen not to be limited by the bending direction, reduce the peeling or breakage of the touch structure in the first region, and improve the touch reliability.

As illustrated in <FIG>, in one or more embodiments of the present disclosure, the plurality of first touch groups <NUM> and the plurality of second touch groups <NUM> that are located in the first sub-region <NUM> and the plurality of first touch groups <NUM> and the plurality of second touch groups <NUM> that are located in the second sub-region <NUM> are insulated from each other, to facilitate to be connected with different touch integrated circuits (ICs), respectively.

<FIG> is a schematic diagram illustrating a touch screen provided by another embodiment of the present disclosure. As illustrated in <FIG>, the touch screen further includes a plurality of first signal lines S1, a plurality of second signal lines S2, a plurality of third signal lines S3, a plurality of fourth signal lines S4, a first touch IC <NUM> and a second touch IC <NUM>. The plurality of first touch groups <NUM> located in the first sub-region <NUM> are connected with the first touch IC <NUM> by the plurality of first signal lines S1, respectively; the plurality of second touch groups <NUM> located in the first sub-region <NUM> are connected with the touch IC <NUM> by the plurality of second signal lines S2, respectively; the plurality of first touch groups <NUM> located in the second sub-region <NUM> are connected with the second touch IC <NUM> by the plurality of third signal lines S3, respectively; and the plurality of second touch groups <NUM> located in the second sub-region <NUM> are connected with the second touch IC <NUM> by the plurality of fourth signal lines S4, respectively.

As illustrated in <FIG>, in one or more embodiments of the present disclosure, the touch screen further includes a plurality of fifth signal lines S5, and the plurality of first touch patterns <NUM> are connected with the second touch IC <NUM> by the plurality of fifth signal lines S5, respectively.

For example, when the touch screen is in the folded state, the first sub-region <NUM> is a normal display region, and the touch is driven by the first touch IC <NUM>. When the touch screen is in the flat state, the full screen is a normal display region, and the full screen touch is driven by the first touch IC <NUM> and the second touch IC <NUM> together.

Of course, the arrangement manner of the touch IC is not limited to that illustrated in <FIG>, and the touch IC can be arranged as required. For example, the plurality of first touch groups <NUM> and the plurality of second touch groups <NUM> that are located in the first sub-region <NUM> may be connected with one touch IC, the plurality of first touch groups <NUM> and the plurality of second touch groups <NUM> that are located in the second sub-region <NUM> are connected with one touch IC, and the plurality of first touch patterns <NUM> are connected with one touch IC.

For the sake of clarity, the specific manner of all the touch patterns or touch groups connected with the touch IC is not illustrated in <FIG>, and can be known by those skilled in the art according to the description of the embodiments of the present disclosure. For example, each touch IC includes a plurality of pins to connect with the touch structures in the first region <NUM> or the second region <NUM>, respectively. For example, when two elements described as being insulated from each other in the embodiment of the present disclosure are connected with the same touch IC, they are also insulated from each other, and can be applied with signals or can feed back signals, respectively.

<FIG> is a schematic diagram illustrating a touch screen provided by an embodiment of the present disclosure. As illustrated in <FIG>, the touch screen is in the folded state. As illustrated in <FIG>, when the touch screen is in the folded state, the first sub-region <NUM> and the second sub-region <NUM> are in the flat state, and the first region <NUM> is in the curved state. It should be noted that the embodiments of the present disclosure are not limited thereto. For example, when the touch screen is in the folded state, the first sub-region <NUM> and the second sub-region <NUM> can also be in a non-flat state.

<FIG> is a schematic diagram illustrating adjacent second touch patterns, a connection line connecting the adjacent second touch patterns, adjacent third touch patterns, and a bridge line connecting the adjacent third touch patterns in a touch screen provided by an embodiment of the present disclosure. As illustrated in <FIG>, each sub-region of the second region of the touch screen includes a plurality of first touch groups <NUM> and a plurality of second touch groups <NUM>. The plurality of first touch groups <NUM> and the plurality of second touch groups <NUM> are located on the base substrate <NUM>. Each of the plurality of first touch groups <NUM> includes a plurality of second touch patterns <NUM>, and each of the plurality of second touch groups <NUM> includes a plurality of third touch patterns <NUM>. The adjacent second touch patterns <NUM> are directly connected by a connection line <NUM>, and the adjacent third touch patterns <NUM> are connected by a bridge line <NUM>. As illustrated in <FIG>, the third touch pattern <NUM> is connected with a corresponding bridge line <NUM> through a via V4. As illustrated in <FIG>, in order to reduce a parasitic capacitor and facilitate a detection of a touch position, an orthographic projection of the bridge line <NUM> on the base substrate <NUM> is partially overlapped with an orthographic projection of one of the plurality of second touch patterns <NUM> on the base substrate <NUM>. For example, the orthographic projection of the bridge line <NUM> on the base substrate <NUM> is not overlapped with an orthographic projection of the connection line <NUM> on the base substrate <NUM>.

As illustrated in <FIG>, in one or more embodiments of the present disclosure, each of the plurality of second touch patterns <NUM> and each of the plurality of third touch patterns <NUM> both have a mesh structure. The second touch pattern <NUM> and the third touch pattern <NUM> have the mesh structure, so that the line forming the mesh can be not arranged in the region where the pixel is located, so as to improve the aperture ratio. In the case where the first touch pattern <NUM>, the second touch pattern <NUM>, and the third touch pattern <NUM> all have the mesh structure, the first touch pattern <NUM> and the third touch pattern <NUM> can be formed by using the same mask. In this case, a density of the first touch pattern <NUM> can be the same as a density of the third touch pattern <NUM> to form the first touch pattern <NUM> and the third touch pattern <NUM> at the same time without changing the mask, without limited thereto. Of course, the density of the first touch pattern <NUM> can be different from that of the third touch pattern <NUM>. For example, the density of the first touch pattern <NUM> is greater than that of the third touch pattern <NUM>. For example, the density of the first touch pattern <NUM> is two times of that of the third touch pattern <NUM> so as not to reduce the touch accuracy of the first region.

Of course, in other embodiments of the present disclosure, even if the same mask is used, touch patterns with different shapes can be formed, and even if the same mask is used, patterns with different densities can be formed at different positions. The used mask can be made according to the pattern to be formed.

As illustrated in <FIG>, in one or more embodiments of the present disclosure, the connection line <NUM> also has a mesh structure. However, in the embodiment of the present disclosure, the connection line <NUM> may not have a mesh structure. The bridge line <NUM> in <FIG> has a non-mesh structure, but in other embodiments of the present disclosure, the bridge line <NUM> can also have a mesh structure.

In the touch screen provided by one or more embodiments of the present disclosure, touch patterns having different structures are disposed in different regions, touch control is achieved by arranging a mesh-structure touch pattern of the bridge type in the non-bendable region and arranging a single-layer touch pattern having the mesh structure in the bendable region.

<FIG> is a schematic diagram illustrating a plurality of first touch patterns arranged in an array in a first region of a touch screen provided by an embodiment of the present disclosure. As illustrated in <FIG>, the first region (as illustrated in <FIG>) of the touch screen includes a plurality of first touch patterns <NUM> and a plurality of conductive lines <NUM>, the plurality of first touch patterns <NUM> are insulated from each other, each of the plurality of first touch patterns <NUM> is connected with one of the plurality of conductive lines <NUM>, and an extending direction of the conductive line <NUM> is parallel with an extending direction of the bending axis <NUM> (as illustrated in <FIG>) of the first region. In this case, the plurality of first touch patterns <NUM> can be used as self-capacitance electrodes to achieve detection of a touch position. Of course, in other embodiments of the present disclosure, the extending direction of the conductive line <NUM> may not be parallel with the extending direction of the bending axis of the first region. For example, the extending direction of the conductive line <NUM> is perpendicular to the extending direction of the bending axis of the first region.

The touch structure of the first region illustrated in <FIG> is a single-layer self-capacitive structure. For example, each of the first touch patterns <NUM> can be applied with a driving signal and can feed back a signal to achieve a detection of a touch position.

<FIG> is a schematic diagram illustrating a plurality of first touch patterns arranged in an array in a first region of a touch screen provided by another embodiment of the present disclosure. As illustrated in <FIG>, the first region <NUM> (as illustrated in <FIG>) of the touch screen includes a plurality of first touch patterns <NUM>, and the plurality of first touch patterns <NUM> form a plurality of rows and a plurality of columns. The first touch patterns <NUM> of the same column (for example, the first touch patterns of the first column illustrated in <FIG>) include a plurality of first electrodes <NUM> insulated from each other, and the first touch patterns <NUM> of a column adjacent thereto (for example, the first touch pattern of the second column illustrated in <FIG>) include a plurality of second electrodes <NUM> in odd rows and a plurality of third electrodes <NUM> in even rows. The plurality of second electrodes <NUM> are electrically connected with each other and the plurality of third electrodes <NUM> are electrically connected with each other, and the plurality of second electrodes <NUM> and the plurality of third electrodes <NUM> are insulated from each other.

The touch structure of the first region illustrated in <FIG> is a single-layer mutual capacitance structure. For example, the first touch patterns in the odd columns can be applied with driving signals and the first touch patterns in the even columns can feedback signals to detect the touch position, without limited thereto.

In one or more embodiments of the present disclosure, as illustrated in <FIG>, the touch screen includes a plurality of first wires <NUM>, a plurality of second wires <NUM> and a plurality of third wires <NUM>. Each of the plurality of first electrodes <NUM> is connected with one of the plurality of first wires <NUM>, and adjacent second electrodes <NUM> of the same column of the first touch patterns <NUM> are connected by one of the plurality of second wires <NUM>, adjacent third electrodes <NUM> of the same column of the first touch patterns <NUM> are connected by one of the plurality of third wires <NUM>; the second wire <NUM> and the third wire <NUM> are arranged at both sides of the first touch patterns <NUM> of the same column, respectively.

In one or more embodiments of the present disclosure, as illustrated in <FIG>, extending directions of the first wire <NUM>, the second wire <NUM> and the third wire <NUM> are parallel with an extending direction of the bending axis <NUM> (as illustrated in <FIG>) of the first region <NUM> (as illustrated in <FIG>), without limited thereto. That is, the extending directions of the first wire <NUM>, the second wire <NUM> and the third wire <NUM> are the same as the direction of the bending axis of the first region. In other embodiments, the extending directions of the first wire <NUM>, the second wire <NUM> and the third wire <NUM> are not parallel with the extending direction of the bending axis <NUM> (as illustrated in <FIG>) of the first region <NUM> (as illustrated in <FIG>). For example, the extending directions of the first wire <NUM>, the second wire <NUM>, and the third wire <NUM> are perpendicular to the extending direction of the bending axis <NUM> (illustrated in <FIG>) of the first region <NUM> (illustrated in <FIG>).

<FIG> is a schematic diagram illustrating a single first touch pattern in a first region of a touch screen provided by an embodiment of the present disclosure. As illustrated in <FIG>, the single first touch pattern <NUM> has a mesh structure. The first touch pattern <NUM> includes a plurality of first conductive lines <NUM> connected with each other. The structure of the first touch pattern <NUM> in the embodiment of the present disclosure can be referred to the structure of the first touch pattern <NUM>.

As illustrated in <FIG>, in one or more embodiments of the present disclosure, a shape of the first touch pattern <NUM> is the same as a shape of at least one selected from the group consisting of the second touch pattern <NUM> and the third touch pattern <NUM> located in the second region, without limited thereto. Every two of the shapes of the first touch pattern <NUM>, the second touch pattern <NUM> and the third touch pattern <NUM> can be different from each other. For example, the shapes of the first touch patterns <NUM> located in the first region can be different, the shapes of the second touch patterns <NUM> located in the second region can be different, and the shapes of the third touch patterns <NUM> located in the second region can also be different. For example, the shape of at least one selected from the group consisting of the second touch pattern <NUM> and the third touch pattern <NUM> includes a rectangle, without limited thereto. In the embodiment of the present disclosure, the shapes of the first touch pattern <NUM>, the second touch pattern <NUM> and the third touch pattern <NUM> are determined as required. The touch patterns with different shapes can be formed even if the same mask is used.

As illustrated in <FIG>, in combination with <FIG>, in one or more embodiments of the present disclosure, the first touch pattern <NUM> is a pattern obtained by rotating at least one selected from the group consisting of the second touch pattern <NUM> and the third touch pattern <NUM> by a first angle. For example, the first angle includes <NUM> degrees, without limited thereto. For example, the first touch pattern <NUM> is a pattern obtained by rotating the second touch pattern <NUM> or the third touch pattern <NUM> by <NUM> degrees, without limited thereto.

<FIG> is a schematic diagram illustrating a single first touch pattern of a first region in a touch screen provided by another embodiment of the present disclosure. As illustrated in <FIG>, the single first touch pattern <NUM> has a mesh structure. The first touch pattern <NUM> includes a plurality of first conductive lines <NUM> connected with each other. The structure of the first touch pattern <NUM> in the embodiment of the present disclosure can also be referred to the structure of the first touch pattern <NUM>.

At least one embodiment of the present disclosure further provides a touch display screen, which includes any one of the touch screens described above.

<FIG> is a schematic diagram illustrating a touch display screen provided by an embodiment of the present disclosure. As illustrated in <FIG>, the first region <NUM> of the touch display screen further includes a plurality of first display pixels <NUM> and a non-display region (non-pixel region) <NUM> located between adjacent first display pixels <NUM>. As illustrated in <FIG>, the second region <NUM> of the touch display screen further includes a plurality of second display pixels <NUM> and a non-display region <NUM> located between adjacent second display pixels <NUM>.

<FIG> is a schematic diagram illustrating positions where a plurality of first conductive lines of a first touch pattern and a first display pixel are located in a touch display screen provided by an embodiment of the present disclosure. As illustrated in <FIG> and <FIG>, the first touch pattern <NUM> includes a plurality of first conductive lines <NUM> connected with each other, and orthographic projections of the plurality of first conductive lines <NUM> on the base substrate <NUM> (as illustrated in <FIG>) are located within the non-display regions <NUM>, to avoid the first touch pattern from affecting the light output effect of the touch display screen, so that the aperture ratio of the touch display screen is not affected. That is, the orthographic projections of the plurality of first conductive lines <NUM> on the base substrate <NUM> are not overlapped with the orthographic projections of the plurality of first display pixels <NUM> on the base substrate <NUM> (as illustrated in <FIG>).

<FIG> is a schematic diagram illustrating positions where a plurality of second wires of a second touch pattern / third touch pattern and a second display pixel are disposed in a touch display screen provided by an embodiment of the present disclosure. As illustrated in <FIG>, the second touch pattern <NUM> or the third touch pattern <NUM> includes a plurality of second conductive lines <NUM> connected with each other. Orthographic projections of the plurality of second conductive lines <NUM> on the base substrate are located within the non-display regions <NUM>, to avoid affecting the light output effect. That is, orthographic projections of the plurality of second conductive lines <NUM> on the base substrate are not overlapped with orthographic projections of the plurality of second display pixels <NUM> on the base substrate. Therefore, the arrangement of the touch structure does not affect the aperture ratio of the touch display screen by arranging the touch patterns having the mesh structure in positions not overlapped with the display pixels.

In order to improve the aperture ratio of display, the signal lines of the touch structure can also be arranged in a similar manner. For example, in order to achieve a high aperture ratio, the conductive line <NUM> illustrated in <FIG> can also be located in the non-display region <NUM>. For example, in order to achieve a high aperture ratio, at least one selected from the group consisting of the first wire, the second wire and the third wire in <FIG> is also located in the non-display region <NUM>.

For example, adjacent first conductive lines <NUM> are connected end to end to from an enclosed region, and one of the plurality of first display pixels <NUM> is located in the enclosed region. For example, each of the plurality of first touch patterns includes a plurality of the enclosed regions, and the plurality of enclosed regions includes enclosed regions having different areas. For example, the plurality of first conductive lines include adjacent first conductive lines with different spaces, without limited thereto. For example, the plurality of first conductive lines include adjacent first conductive lines with the same space. The size of the enclosed region and the space between adjacent first conductive lines can be determined according to the size of the pixel.

It should be explained that, in the embodiments of the present disclosure, a region formed by adjacent conductive lines is not limited to an enclosed region. For example, in other embodiments, the region formed by adjacent wires is not an enclosed region, that is, the region formed by the adjacent wires has an opening, as illustrated in <FIG>.

For example, the orthographic projections of the second conductive lines <NUM> on the base substrate <NUM> are not overlapped with the orthographic projections of the second display pixels <NUM> on the base substrate <NUM>.

For example, the first touch pattern <NUM>, the second touch pattern <NUM> and the third touch pattern <NUM> can be formed of a metal material, without limited thereto. For example, at least one selected from the group consisting of the first wire, the second wire and the third wire can be formed of a metal material, without limited thereto.

<FIG> is a schematic diagram illustrating a stacked layer structure of a non-bendable region of a touch display panel provided by an embodiment of the present disclosure. The non-bendable region can be the second region <NUM> illustrated in <FIG> or <FIG>. As illustrated in <FIG>, an OLED unit <NUM> and an encapsulation layer <NUM> are disposed on a base substrate <NUM>. A barrier layer <NUM> is disposed on the encapsulation layer <NUM>. A bridge layer <NUM> is disposed on the barrier layer <NUM>. An insulation layer <NUM> is disposed on the bridge layer <NUM>. A touch layer <NUM> that is a touch-sensitive functional layer is disposed on the insulation layer <NUM>. A protection layer <NUM> is disposed on the touch layer <NUM>. For example, the base substrate <NUM> is a flexible substrate, and a material of the base substrate <NUM> includes PI. For example, the bridge layer <NUM> includes a plurality of bridge lines, and the touch layer <NUM> may include the second touch pattern, the third touch pattern and the connection line <NUM>, without limited thereto. For example, the bridge layer <NUM> includes the plurality of bridge lines <NUM>, the touch layer <NUM> includes the third touch pattern <NUM> and the connection line <NUM>, and the touch layer <NUM> further includes the second touch pattern <NUM>, which is not illustrated in <FIG> and can be referred to <FIG>. For another example, the bridge layer <NUM> includes the plurality of bridge lines <NUM>, the touch layer <NUM> includes the third touch pattern <NUM> and the second touch pattern <NUM>, and the touch layer <NUM> further includes the connection line <NUM>, which is not illustrated in <FIG> and can be referred to <FIG>.

<FIG> is a schematic diagram illustrating a stacked layer structure of a bendable region of a touch display panel provided by an embodiment of the present disclosure. The bendable region can be the first region <NUM> illustrated in <FIG> or <FIG>. As illustrated in <FIG>, an organic light-emitting diode (OLED) unit <NUM> is disposed on the base substrate <NUM>, a thin film encapsulation (TFE) layer <NUM> is disposed on the OLED unit <NUM>, a barrier layer <NUM> is disposed on the TFE layer <NUM>, a touch layer <NUM> is disposed on the barrier layer <NUM>, and a protection layer <NUM> is disposed on the touch layer <NUM>. For example, the touch layer <NUM> includes the plurality of first touch patterns <NUM>. For example, the base substrate <NUM> is a flexible substrate, and a material of the base substrate <NUM> includes PI. For example, the touch layer <NUM> is a metal mesh touch functional layer.

<FIG> is a schematic diagram illustrating a stacked layer structure of a bendable region and a non-bendable region of a touch display panel provided by an embodiment of the present disclosure. The non-bendable region can be the second region <NUM> illustrated in <FIG> or <FIG>. The bendable region can be the first region <NUM> illustrated in <FIG> or <FIG>. As illustrated in <FIG>, a bridge layer <NUM> is disposed on a barrier layer <NUM>, an insulation layer <NUM> is disposed on the bridge layer <NUM>, a touch layer <NUM> is disposed on the insulation layer <NUM>, and a protection layer <NUM> is disposed on the touch layer <NUM>. For example, the bridge layer <NUM> includes a plurality of bridge lines. For example, the first touch pattern <NUM> of the first region <NUM> (the bendable region) can be formed in the same layer as the bridge layer <NUM> or in the same layer as the touch layer <NUM>. For example, the bridge layer <NUM> includes a plurality of bridge lines <NUM>, the touch layer <NUM> includes the third touch pattern <NUM> and the connection line <NUM> and the touch layer <NUM> further includes the second touch pattern <NUM>, which is not illustrated in <FIG> and can be referred to <FIG>. For another example, the bridge layer <NUM> includes the plurality of bridge lines <NUM>, the touch layer <NUM> includes the third touch pattern <NUM> and the second touch pattern <NUM>, and the touch layer <NUM> further includes the connection line <NUM>, which is not illustrated in <FIG> and can be referred to <FIG>.

At least one embodiment of the present disclosure further provides a display device including any one of the above touch screens or any of the above touch display screens.

For example, the display device includes an OLED display device, without limited thereto.

For example, in an embodiment of the present disclosure, the touch structure can be disposed above an encapsulation layer to form an on-cell touch screen. The encapsulation layer includes a Thin Film Encapsulation (TFE) layer. Of course, when the display device is a liquid crystal display device, an on-cell touch screen can also be formed.

It should be explained that, for the purpose of clarity only, in accompanying drawings for illustrating the embodiment(s) of the present disclosure, the thickness and size of a layer or a structure may be enlarged. However, it should be understood that, in the case in which a component or element such as a layer, film, area, substrate or the like is referred to be "on" or "under" another component or element, it may be directly on or under the another component or element or a component or element is interposed therebetween.

In the embodiments of the present disclosure, the patterning or patterning process may include only a photolithography process, or include a photolithography process and an etching process, or may include printing, inkjet, and other processes for forming a predetermined pattern. The photolithography process refers to processes including film formation, exposure, and development, for using photoresist, mask, and exposure machine to form a pattern. A corresponding patterning process may be selected according to a structure formed in an embodiment of the present disclosure.

Furthermore, the embodiments of the present disclosure and the features therein can be combined with each other in the absence of conflict.

Claim 1:
A touch screen, comprising:
a first region (<NUM>), being bendable and comprising a plurality of first touch patterns (<NUM>, <NUM>, <NUM>, <NUM>) arranged in an array in a first direction (D1) and a second direction (D2), wherein the plurality of first touch patterns (<NUM>, <NUM>, <NUM>, <NUM>) are located in a same layer, adjacent first touch patterns (<NUM>, <NUM>, <NUM>, <NUM>) are insulated from each other, and the first direction (D1) is intersected with the second direction (D2); and
a second region (<NUM>), connected with the first region (<NUM>),
wherein the second region (<NUM>) comprises at least one sub-region (<NUM>, <NUM>), and the sub-region (<NUM>, <NUM>) comprises a plurality of first touch groups (<NUM>) and a plurality of second touch groups (<NUM>);
the plurality of first touch groups (<NUM>) are insulated from and are intersected with the plurality of second touch groups (<NUM>);
each of the plurality of first touch groups (<NUM>) comprises a plurality of second touch patterns (<NUM>, <NUM>), and each of the plurality of second touch groups (<NUM>) comprises a plurality of third touch patterns (<NUM>, <NUM>);
wherein the plurality of second touch patterns (<NUM>, <NUM>) and the plurality of third touch patterns (<NUM>, <NUM>) are located in a same layer, and the plurality of second touch patterns (<NUM>, <NUM>) are directly connected, and adjacent third touch patterns (<NUM>, <NUM>) are connected by a bridge line (<NUM>, <NUM>); the touch screen further comprises a base substrate (<NUM>), wherein the bridge line (<NUM>, <NUM>) and the plurality of second touch patterns (<NUM>, <NUM>) are located on the base substrate (<NUM>),
characterized in that
the orthographic projection of the bridge line (<NUM>, <NUM>) on the base substrate (<NUM>) is partially overlapped with the orthographic projection of one of the plurality of second touch patterns (<NUM>, <NUM>) on the base substrate (<NUM>),
adjacent second touch patterns (<NUM>, <NUM>) are directly connected by a connection line (<NUM>), and
the orthographic projection of the bridge line (<NUM>) on the base substrate (<NUM>) is not overlapped with the orthographic projection of the connection line (<NUM>) on the base substrate (<NUM>).