CN111562860A - Touch display screen and electronic equipment - Google Patents

Abstract

The present application discloses a touch display screen and an electronic device, wherein the touch display screen includes: a touch layer, a display layer, at least one first feeder structure and a medium layer; the touch layer is provided with at least one an annular opening; the first feeder structure and the dielectric layer are located between the display layer and the touch layer, and the dielectric layer is located between the first feeder structure and the touch layer ; wherein, the orthographic projection area of the first feeder structure on the touch layer spans the inner ring and the outer ring of the annular opening. The present application can realize the integration of the antenna structure on the touch display screen with the touch layer, and does not need to add an additional wiring layer above the touch layer, so as to avoid affecting the performance of the touch layer of the screen.

Description

Touch screen and electronic equipment

technical field

The present application relates to the technical field of electronic products, and in particular, to a touch display screen and an electronic device.

Background technique

With the rapid development of wireless communication technology, especially with the development of the fifth-generation mobile communication technology (5th-Generation, 5G), the application scenarios of wireless communication systems are becoming more and more abundant. Antenna requirements are getting higher and higher. On the one hand, in some application scenarios, the antenna needs to be conformal, concealed, and safe so as to be integrated into wireless products such as automobiles, smart wearables, and smart homes; on the other hand, with the increasing transmission rate of wireless communication systems The higher the communication capacity is, the higher the carrier frequency is, and the path loss caused by the higher and higher carrier frequency is increasing, which leads to the need for the array antenna to increase the gain to overcome the influence of the path loss. Gain at the same time can be beam scanning or beamforming (beamforming), which requires the use of phased array antenna (phasedantenna array) technology, which requires the integration of more and more antennas in a limited space.

In order to be able to integrate more and more antennas in a limited space, it is necessary to open up other antenna spaces on the basis of traditional antenna design methods, such as: screen integrated antenna, that is, the design of the antenna on the screen, the design of the screen with the antenna, etc. Especially with the rise of full-screen 5G wireless communication products, the number of antennas is increasing, and the pursuit of the ultimate full-screen effect has led to the continuous compression of the antenna space, so it has become more and more urgent to integrate transparent antennas on the screen. . At present, the on-screen millimeter-wave antenna is generally set on the upper layer of the display screen. This design can only be applied to display screens without a touch layer, such as TVs, advertising screens, etc. The design of the off-screen antenna is affected by the type of display screen. limits.

SUMMARY OF THE INVENTION

The embodiments of the present application provide a touch display screen and an electronic device, so as to solve the problem that the current design of the antenna on the screen can only be applied to a display screen without a touch layer, which is limited by the type of the display screen.

In order to solve the above technical problems, this application is implemented as follows:

In a first aspect, an embodiment of the present application provides a touch display screen, including:

display layer;

a touch layer, wherein at least one annular opening is formed on the touch layer;

At least one first feeder structure and a dielectric layer, the first feeder structure and the dielectric layer are located between the display layer and the touch layer, and the dielectric layer is located between the first feeder structure and the between touch layers;

Wherein, the orthographic projection area of the first feeder structure on the touch layer is arranged across the inner ring and the outer ring of the annular opening.

In a second aspect, an embodiment of the present application further provides an electronic device, including the above touch display screen.

In this way, in the above solution of the present application, the slot antenna is fabricated by opening a ring-shaped opening on the touch layer, and arranging a dielectric layer and a first feeder structure below the touch layer, so that the feed source of the first feeder structure is connected. To excite the slot antenna to radiate the antenna signal, the antenna structure can be integrated on the touch display screen with the touch layer, and there is no need to add an additional wiring layer above the touch layer to avoid affecting the performance of the touch layer of the screen. .

Description of drawings

FIG. 1 shows one of the schematic diagrams of the touch display screen according to the embodiment of the present application;

FIG. 2 shows the second schematic diagram of the touch display screen according to the embodiment of the present application;

FIG. 3 shows one of the schematic diagrams of the first feeder structure according to the embodiment of the present application;

FIG. 4 shows the second schematic diagram of the first feeder structure according to the embodiment of the present application;

FIG. 5 shows a schematic diagram of a second feeder structure according to an embodiment of the present application;

FIG. 6 is a schematic diagram of a flexible circuit board according to an embodiment of the present application;

FIG. 7 is a schematic diagram showing an S-parameter diagram of a slot antenna according to an embodiment of the present application;

FIG. 8 shows an efficiency diagram of a slot antenna according to an embodiment of the present application;

FIG. 9 shows a radiation pattern of a single slot antenna according to an embodiment of the present application.

Description of reference numbers:

1. Touch layer; 11. Ring opening;

2. Display layer;

3. The first adhesive layer;

4. The first feeder structure; 41, the first sub-feeder structure; 411, the first impedance transformation structure; 412, the first microstrip feeder; 42, the second sub-feeder structure; 421, the second impedance transformation structure; 43, the third sub-feeder structure; 431, the third impedance transformation structure; 432, the third microstrip feeder; 44, the fourth sub-feeder structure; 441, the fourth impedance transformation structure; 442, the fourth microstrip feeder with feeder;

5. Polarizer;

6. The second adhesive layer;

7. Glass cover;

8. Foam;

9. Second feeder structure; 91, Metal formation; 92, First substrate; 93, Strip feeder; 94, Second substrate; 941, Through hole; 95, Coplanar waveguide; 951, Antenna feed point;

10. Flexible circuit board; 100. Display chip; 101. Touch chip; 102. Connector.

Detailed ways

Exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present application are shown in the drawings, it should be understood that the present application may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the application will be more thoroughly understood, and will fully convey the scope of the application to those skilled in the art.

As shown in FIG. 1 and FIG. 2 , an embodiment of the present application provides a touch display screen, including: a touch layer 1 , a display layer 2 , at least one first feeder structure 4 and a dielectric layer.

The touch layer 1 is provided with at least one annular opening 11 ; the first feeder structure 4 and the dielectric layer are located between the display layer 2 and the touch layer 1 , and the dielectric layer is located between the first feeder structure 4 and the touch layer 1 ; wherein, the orthographic projection area of the first feed line structure 4 on the touch layer 1 spans the inner ring and the outer ring of the annular opening 11 .

Optionally, the length of the annular opening 11 on the touch layer 1 can be about half the wavelength of the medium, and the width is smaller. The specific size of the annular opening 11 can also be adjusted according to the impedance matching situation.

Optionally, the width of the annular opening 11: that is, the vertical distance between the inner ring and the outer ring can be the same; one annular opening 11 can divide the touch layer 1 into: the first area (or said to be the first area surrounded by the inner ring) and the second area located outside the outer ring; the orthographic projection of the first feeder structure 4 on the touch layer 1 spans the inner ring and the outer ring of the annular opening 11 It is understood that the orthographic projection area of one end of the first feeder structure 4 on the touch layer 1 spans the annular opening 11 in the width direction, that is, the orthographic projection area of the end of the first feeder structure 4 on the touch layer 1 They are located in the first area, in the area of the annular opening 11 and in the second area in sequence.

Optionally, the annular opening 11 is located in a non-sensitive area of the touch layer 1; wherein, the non-sensitive area may refer to an area on the touch display screen where the probability of being touched is less than a preset threshold or not being touched. Thus, the influence on the touch function of the touch display screen can be reduced.

For example, the non-sensitive area may be: the area corresponding to the black border area of the touch display screen, or the non-sensitive area may also be: the area corresponding to the display area of the status bar of the touch display screen, the embodiment of the present application does not This is the limit.

Optionally, the shape of the annular opening 11 may be a square ring, a circular ring, a rectangular ring or the like.

Optionally, the touch layer 1 may be an indium tin oxide (Indium tin oxide, ITO) touch layer or the like, which is not limited in the present application.

Optionally, the display layer 2 may include an upper glass and a lower glass, and a display material (eg, liquid crystal, etc.) disposed between the upper glass and the lower glass, or the display layer 2 may also emit light through semiconductors, etc. This is the limit.

Optionally, one annular opening 11 may correspond to one dielectric layer; for example: when the number of annular openings 11 is greater than 1, the annular openings 11 and the dielectric layer may be set in one-to-one correspondence, or multiple The annular openings 11 are set corresponding to one dielectric layer. For example, in an array antenna composed of slot antennas corresponding to multiple annular openings 11 , one row or one column of annular openings corresponds to one dielectric layer, etc. The embodiments of the present application are not limited thereto.

Among them, an annular opening 11, a first feeder structure 4 corresponding to the annular opening 11 (such as a first feeder structure whose orthographic projection area spans the inner ring and the outer ring of the annular opening 11), and the The dielectric layer between the two can be formed as a slot antenna.

Optionally, as an implementation manner: the dielectric layer may be a dielectric substrate disposed between the first feeder structure 4 and the touch layer 1, such as a liquid crystal polymer (Liquid Crystal Polymer, LCP) substrate; of course, Substrates of other materials may also be used, which can be used as a dielectric substrate of an antenna, which is not limited in the embodiments of the present application.

Optionally, as another implementation manner: the touch display screen may further include: a first adhesive layer 3 ; the display layer 2 is connected to the touch layer 1 through the first adhesive layer 3 , and the first adhesive layer 3 The dielectric layer is formed extending to the portion between the touch layer 1 and the first feed line structure 4 .

Optionally, the first adhesive layer 3 may be a special adhesive used for gluing transparent optical elements (such as lenses, etc.), such as Optical Clear Adhesive (OCA), Optical Clear Resin (Optical Clear Resin) , OCR) etc.

For example, a ring-shaped opening 11 is opened on the touch layer 1 to serve as the slot of the slot antenna (that is, the touch layer 1 can be used as the antenna ground), and the first feeder structure 4 of the slot antenna is fixed by the first adhesive layer 3 on the slot antenna. The bottom of the touch layer 1 and the side connected with the first feeder structure 4 on the touch layer 1 are bonded to the display layer 2 through the first adhesive layer 3 .

Optionally, when the number of the annular openings 11 is greater than 1, the slot antennas corresponding to the annular openings 11 are arranged according to a predetermined rule to form an antenna array.

Optionally, when the number of annular openings 11 is greater than 1, it may be that one annular opening 11 corresponds to at least one first feeder structure 4 , for example, one annular opening 11 corresponds to one first feeder structure 4 , or one annular opening 11 corresponds to one first feeder structure 4 . The openings 1 correspond to two first feeder structures 4 , or one annular opening 1 corresponds to four first feeder structures 4 , etc. The embodiment of the present application is not limited to this.

Optionally, the slot antenna corresponding to the annular opening 11 may be a millimeter-wave slot antenna.

In the embodiment of the present application, the slot antenna is fabricated by opening the annular opening 11 on the touch layer 1 and disposing the dielectric layer and the first feeder structure 4 under the touch layer 1 . The feed is used to excite the slot antenna to radiate the antenna signal, so that the antenna structure can be integrated on the touch display screen with the touch layer 1, and there is no need to add an additional wiring layer above the touch layer to avoid affecting the touch screen. Therefore, the communication function of the antenna on the screen is realized without affecting the touch function, and the difficulty of process processing can also be reduced.

In addition, by opening the annular opening 11 on the touch layer 1 and arranging the dielectric layer and the first feeder structure 4 under the touch layer 1 to fabricate the slot antenna, an antenna array can also be formed, without the need for a separate integrated antenna Module in package (AiP) module, which effectively saves space.

Optionally, as an implementation manner: one annular opening 11 may correspond to one first feeder structure 4 , that is, the slot antenna formed by one annular opening 11 may adopt single-ended feeding.

Optionally, the first feeder structure 4 may include: an impedance transformation structure and a microstrip feeder; the first end of the microstrip feeder is connected to the impedance transformation structure; the end of the first feeder structure 4 where the impedance transformation structure is located is located on the touch layer. The orthographic projection area on 1 spans the inner and outer rings of the annular opening 11 .

For example, the orthographic projection area of the impedance transformation structure on the touch layer 1 is located across the inner ring and the outer ring of the annular opening 11 ; The area surrounded by the inner ring; or, a part of the orthographic projection area of the impedance transformation line on the touch layer 1 is located in the area surrounded by the inner ring of the annular opening 11 , and the other part is located in a partial area of the annular opening.

Optionally, as another implementation manner: as shown in FIG. 3 , the annular opening 11 is symmetrical with respect to the first axis; for example, when the shape of the annular opening 11 is , the first symmetry axis may be a rectangular length The axis of symmetry of the direction; when the annular opening 11 is elliptical, the first axis of symmetry may be the long axis of the ellipse.

Optionally, the at least one first feeder structure includes: a first sub-feeder structure 41 and a second sub-feeder structure 42 .

The orthographic projection area of the first sub-feeder structure 41 on the touch layer 1 spans the inner ring and the outer ring of the first position of the annular opening 11 ; the orthographic projection area of the second sub-feeder structure 42 on the touch layer 1 The inner ring and the outer ring straddling the second position of the annular opening 11; wherein the first position and the second position are symmetrical with respect to the first axis.

In this way, the slot antenna formed by the annular opening 11 can realize differential feeding through the first sub-feeder structure 41 and the second sub-feeder structure, so that the radiation performance of the antenna can be improved.

Optionally, the first sub-feeder structure 41 may include: a first impedance transformation structure 411 and a first microstrip feeder 412 .

The first end of the first microstrip feeder 412 is connected to the first impedance transformation structure 411 , and the second end of the first microstrip feeder 412 is connected to the feed source; the end of the first sub-feeder structure 41 where the first impedance transformation structure 411 is located , the orthographic projection area on the touch layer 1 spans the inner ring and the outer ring of the annular opening 11 . For the specific form, reference may be made to the above embodiments, which will not be repeated here.

Optionally, the second sub-feeder structure 42 may include: a second impedance transformation structure 421 and a second microstrip feeder 422 .

The first end of the second microstrip feeder 422 is connected to the second impedance transformation structure 421 , and the second end of the second microstrip feeder 422 is connected to the feed source; wherein the second impedance transformation structure 421 in the second sub-feeder structure 42 is located At one end, the orthographic projection area on the touch layer 1 spans the inner ring and the outer ring of the annular opening 11 . For the specific form, reference may be made to the above embodiments, which will not be repeated here.

The purpose of the impedance transformation structure is to achieve better impedance matching. Specifically, the shape of the impedance transformation structure may also be a circle, a trapezoid, a triangle, or the like, which is not limited to this embodiment of the present application.

Optionally, as another implementation manner: as shown in FIG. 4 , the annular opening 11 may be symmetrical with respect to the first axis and the second axis, respectively, and the second axis is perpendicular to the first axis; The shape of the hole 11 may be square, circular, or the like.

Two mutually perpendicular feeding ports are used for feeding, for example, the at least one first feeder structure includes: a first sub-feeder structure 41 , a second sub-feeder structure 42 , a third sub-feeder structure 43 and a fourth sub-feeder structure 44. The first sub-feeder structure 41 and the second sub-feeder structure 42 constitute a horizontally polarized feeder; the third sub-feeder structure 43 and the fourth sub-feeder structure 44 constitute a vertically polarized feeder.

The orthographic projection area of the first sub-feeder structure 41 on the touch layer 1 spans the inner ring and the outer ring of the first position of the annular opening 11 ; the orthographic projection area of the second sub-feeder structure 42 on the touch layer 1 The inner ring and the outer ring straddling the second position of the annular opening 11; wherein the first position and the second position are symmetrical with respect to the first axis.

The orthographic projection area of the third sub-feeder structure 43 on the touch layer 1 spans the inner ring and the outer ring at the third position of the annular opening 11 ; the orthographic projection area of the fourth sub-feeder structure 44 on the touch layer 1 The inner ring and the outer ring straddling the fourth position of the annular opening 11; wherein the third position and the fourth position are symmetrical with respect to the second axis.

Optionally, the first sub-feeder structure 41 may include: a first impedance transformation structure 411 and a first microstrip feeder 412 .

The first end of the first microstrip feeder 412 is connected to the first impedance transformation structure 411 , and the second end of the first microstrip feeder 412 is connected to the feed source; the end of the first sub-feeder structure 41 where the first impedance transformation structure 411 is located , the orthographic projection area on the touch layer 1 spans the inner ring and the outer ring of the annular opening 11 . For the specific form, reference may be made to the above embodiments, which will not be repeated here.

Optionally, the second sub-feeder structure 42 may include: a second impedance transformation structure 421 and a second microstrip feeder 422 .

The first end of the second microstrip feeder 422 is connected to the second impedance transformation structure 421 , and the second end of the second microstrip feeder 422 is connected to the feed source; wherein the second impedance transformation structure 421 in the second sub-feeder structure 42 is located At one end, the orthographic projection area on the touch layer 1 spans the inner ring and the outer ring of the annular opening 11 . For the specific form, reference may be made to the above embodiments, which will not be repeated here.

The third sub-feeder structure 43 may include: a third impedance transformation structure 431 and a third microstrip feeder 432 .

The first end of the third microstrip feeder 432 is connected to the third impedance transformation structure 431, and the second end of the third microstrip feeder 432 is connected to the feed source; wherein, in the third sub-feeder structure 43, the third impedance transformation structure 431 is located At one end, the orthographic projection area on the touch layer 1 spans the inner ring and the outer ring of the annular opening 11 . For the specific form, reference may be made to the above embodiments, which will not be repeated here.

Optionally, the fourth sub-feeder structure 44 may include: a fourth impedance transformation structure 441 and a fourth microstrip feeder 442 .

The first end of the fourth microstrip feeder 442 is connected to the fourth impedance transformation structure 441, and the second end of the fourth microstrip feeder 442 is connected to the feed source; wherein, the fourth impedance transformation structure 441 in the fourth sub-feeder structure 44 is located At one end, the orthographic projection area on the touch layer 1 spans the inner ring and the outer ring of the annular opening 11 . For the specific form, reference may be made to the above embodiments, which will not be repeated here.

The purpose of the impedance transformation structure is to achieve better impedance matching. Specifically, the shape of the impedance transformation structure may also be a circle, a trapezoid, a triangle, or the like, which is not limited to this embodiment of the present application.

It should be noted that, in the embodiment of the present application, the position where the feeder structure feeds into the annular opening 11 is the central position; specifically, the position of the connection point (antenna feed point) can also be adjusted according to actual needs, and the embodiment of the present application does not This is the limit.

As shown in FIG. 1 and FIG. 2 , optionally, the touch display screen may further include: a polarizer 5 and a cover glass 7 . The polarizer 5 is arranged on the side of the touch layer 1 away from the display screen 2 ; the cover glass 7 is arranged on the side of the polarizer 5 away from the touch layer 1 .

The optional cover glass 7 may be bonded to the side of the polarizer 5 away from the touch layer 1 through a second adhesive layer 6 or the like, for example, the second adhesive layer 6 may be OCA or OCR glue or the like.

Due to the presence of a glass cover plate with large dielectric constant and dielectric loss on the display screen (the typical values of the dielectric constant and loss tangent of the glass cover plate are 6.9 and 0.034), there is a relatively obvious beam distortion problem on the screen. In this way, the annular slot antenna (eg, the millimeter-wave annular slot antenna) in the embodiment of the present application can effectively improve the radiation performance of the millimeter-wave antenna and reduce the distortion of the pattern caused by the glass by adopting differential feeding.

Preferably, the shape of the annular opening 11 may preferably be a symmetrical pattern such as a square, a circle, etc., so that the annular slot antenna can obtain dual-polarization performance by adding a feeder structure that is perpendicular to each other, thereby improving the radiation performance of the antenna and reducing the amount of glass Distortion caused by the orientation map.

Optionally, the touch display screen may further include: foam 8 . The foam 8 is disposed on the side of the display layer 2 away from the touch layer 1 .

As shown in FIG. 5 , optionally, the touch display screen further includes: a second feeder structure 9 .

The first end of the second feeder structure 9 is connected to the first feeder structure 4 , and the second end of the second feeder structure 9 is connected to the feed source.

Optionally, the second feeder structure 9 includes: a metal ground layer 91 , a first substrate 92 , a strip feeder 93 , a second substrate 94 and a coplanar waveguide 95 .

The metal ground layer 91 is arranged on the first surface of the first substrate 92; the strip feeder 93 is arranged between the second surface of the first substrate 92 and the first surface of the second substrate 94; the second substrate 94 is provided with a through hole 941 The coplanar waveguide 95 is arranged on the second surface of the second substrate 94, and the first end of the coplanar waveguide 95 is connected to the first end of the strip feeder 93 through the through hole 941, and the second end of the coplanar waveguide 95 is connected to the first end of the strip feeder 93. A feeder structure 4 is connected, and the second end of the strip feeder 93 is connected to the feed source.

Wherein, the feed can be provided by a radio frequency integrated circuit (Radiao Frquency Intergarted Circuit, RFIC).

Optionally, the strip feeder 93 may be a fully enclosed feeder structure, and the strip feeder may be fabricated on a metal plate; the second end of the coplanar waveguide 95 is formed as an antenna feed point 951, and the antenna feed point 951 is used for To connect with the first feeder structure 4, a coplanar waveguide can be fabricated on a metal plate. The through holes 941 may be metal vias formed on the second substrate 94 . The first substrate 92 and the second substrate 94 may be LCP substrates.

The second feed line structure 9 in the embodiment of the present application adopts an LCP feed line structure based on strip line 93 (strip line) to coplanar waveguide (CPW) to feed the slot antenna formed on the touch layer 1 . For example, when the slot antenna is a millimeter-wave slot antenna, the millimeter-wave radio frequency signal can enter the strip feeder 93 through the RFIC circuit. Since the strip feeder 93 is a fully enclosed feeder structure, the electromagnetic waves on it will not leak into the space, thereby avoiding electromagnetic interference to other components in the electronic device. Near the antenna feed point 951, the strip feed line 93 is transformed to the upper-layer coplanar waveguide through a metal via hole so as to achieve a good common ground between the reference ground of the feed line and the antenna ground on the touch layer.

It should be noted that the feeding form of the above-mentioned second feeder structure 9 is only an optional embodiment of the present application. In addition to this, an LCP feeder structure in the form of coaxial feeding, microstrip feeding, etc. can also be used, The embodiments of the present application are not limited to this.

Optionally, impedance control can also be performed on the LCP feeder structure, and the line length is as short as possible to reduce path loss. The feeder of each slot antenna unit converges to the Bonding Area, directly leads to the touch hot-pressing position, and is then transferred to the pins of the RFIC circuit through the traces on the LCP feeder structure after hot-pressing. Wherein, the link area may be provided with a positioning mark, so that the LCP can be positioned by thermocompression.

Since the LCP material has the properties of low high frequency loss, good stability, and easy bending, the LCP material is used as the connection line between the microstrip feeder and the antenna signal source of the on-screen annular slot antenna in the embodiment of the present application, so that as much as possible Reduce unnecessary line loss caused by feeding.

Optionally, at least one of the display chip 100 and the touch chip 101 of the touch display screen may be disposed on the first circuit board together with the RFIC, that is, at least one of the display chip 100 and the touch chip 101 of the touch screen display It can be arranged on the same circuit board as the RFIC, such as the flexible circuit board 10 , as shown in FIG. 6 .

Optionally, the RFIC can be soldered to the LCP feeder structure, and at least one of the display chip 100 and the touch chip 101 of the touch display screen can also be disposed on the LCP.

In this way, the RFIC can share the connector 102 on the same circuit board with the display chip 100 and the touch control chip 101 , and the circuit board and the connector do not need to be provided separately, which effectively saves space. Wherein, the connector 102 can be a board-to-board (TBT) connector, which can be used to connect with a main board in an electronic device.

The embodiment of the present application uses a single loop slot antenna formed on the touch layer 1 as an example for description. In practice, the loop slot antenna in the embodiment of the present application may also be used as a unit for array design. FIG. 7 is a schematic diagram of an S-parameter diagram of a slot antenna, FIG. 8 is an efficiency diagram of the slot antenna, and FIG. 9 is a radiation pattern of a single slot antenna. It can be seen from FIG. 7 and FIG. 8 that, taking -6dB as the standard, the impedance bandwidth of the annular slot antenna unit formed based on the touch layer designed in the embodiment of the present application can cover the frequency band of 54.5 GHz to 64 GHz, and the impedance bandwidth within the impedance bandwidth is 54.5 GHz to 64 GHz. The efficiency of the broadband slot antenna based on the touch layer basically meets the requirements.

The embodiment of the present application also provides an electronic device, which includes the above touch display screen, and can realize the corresponding functions of the above touch display screen and achieve the same technical effect, which will not be repeated here.

Optionally, when the slot antenna is made of a transparent material, the antenna has light transmittance and better antenna radiation performance, so it can be applied to smart glasses, virtual reality technology (Virtual Reality, VR) equipment, augmented reality. (Augmented Reality, AR) devices and other smart wearable devices can also be used on the glass or display screens of mobile terminal devices such as the Internet of Things, smart homes, cars, and mobile phones. Design space.

The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments may be referred to each other.

Although the preferred embodiments of the embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once the basic inventive concepts are known. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications that fall within the scope of the embodiments of the present application.

Finally, it should also be noted that in this document, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply these entities or that there is any such actual relationship or sequence between operations. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass non-exclusive inclusion, such that a process, method, article or terminal device comprising a list of elements includes not only those elements, but also a non-exclusive list of elements. other elements, or also include elements inherent to such a process, method, article or terminal equipment. Without further limitation, an element defined by the phrase "comprises a..." does not preclude the presence of additional identical elements in the process, method, article or terminal device comprising said element.

The above are the preferred embodiments of the present application. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principles described in the present application, and these improvements and modifications are also included in the present application. within the protection scope of the application.

Claims (10)

1. A touch display screen, comprising:

a display layer;

the touch control layer is provided with at least one annular opening;

the first feeder structure and the dielectric layer are positioned between the display layer and the touch layer, and the dielectric layer is positioned between the first feeder structure and the touch layer; the orthographic projection area of the first feeder line structure on the touch layer is spanned on the inner ring and the outer ring of the annular opening.

2. The touch display screen of claim 1, further comprising:

the display layer is connected with the touch layer through the first adhesive layer, the first adhesive layer extends to the part between the touch layer and the first feeder structure to form the dielectric layer.

3. The touch display screen of claim 1, wherein the annular aperture is symmetrical about a first axis; the at least one first feed line structure comprises:

the orthographic projection area of the first sub-feeder structure on the touch layer spans the inner ring and the outer ring at the first position of the annular opening;

the orthographic projection area of the second sub-feeder structure on the touch layer spans the inner ring and the outer ring at the second position of the annular opening;

wherein the first position and the second position are symmetrical with respect to the first axis.

4. The touch display screen of claim 3, wherein the annular opening is further symmetrical about a second axis, and the second axis is perpendicular to the first axis; the at least one first feed line structure further comprises:

the orthographic projection area of the third sub-feeder structure on the touch layer spans an inner ring and an outer ring at a third position of the annular opening;

the orthographic projection area of the fourth sub-feeder structure on the touch layer spans the inner ring and the outer ring at the fourth position of the annular opening;

wherein the third position and the fourth position are symmetrical with respect to the second axis.

5. The touch display screen of claim 1, wherein the first feed line structure comprises: an impedance transformation structure and a microstrip feed line; the first end of the microstrip feeder line is connected with the impedance transformation structure, and the second end of the microstrip feeder line is connected with the feed source;

the orthogonal projection area on the touch layer is arranged on the inner ring and the outer ring of the annular opening in a spanning mode at one end, where the impedance transformation structure is located, of the first feeder structure.

6. The touch display screen of any one of claims 1-5, further comprising:

a second feed line structure, a first end of the second feed line structure connected with the first feed line structure, a second end of the second feed line structure connected with a feed source.

7. The touch display screen of claim 6, wherein the second feed line structure comprises:

the metal ground layer is arranged on the first surface of the first substrate;

the strip feed line is arranged between the second surface of the first substrate and the first surface of the second substrate; the second substrate is provided with a through hole;

the coplanar waveguide is arranged on the second surface of the second substrate, a first end of the coplanar waveguide is connected with a first end of the strip feed line through the through hole, a second end of the coplanar waveguide is connected with the first feed line structure, and a second end of the strip feed line is connected with the feed source.

8. The touch display screen of claim 1, wherein the annular opening is located in a non-sensitive area of the touch layer;

the non-sensitive areas are: and the area corresponds to the black edge area of the touch display screen, or the area corresponds to the status bar display area of the touch display screen.

9. The touch display screen of claim 1, wherein when the number of the annular openings is greater than 1, the slot antennas corresponding to the annular openings are arranged according to a predetermined rule to form an antenna array.

10. An electronic device comprising the touch display screen of any one of claims 1-9.

Images