CN214751827U - Touch display screen and electronic equipment - Google Patents
Touch display screen and electronic equipment Download PDFInfo
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- CN214751827U CN214751827U CN202121021732.0U CN202121021732U CN214751827U CN 214751827 U CN214751827 U CN 214751827U CN 202121021732 U CN202121021732 U CN 202121021732U CN 214751827 U CN214751827 U CN 214751827U
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Abstract
The embodiment of the utility model discloses a touch display screen and electronic equipment, wherein, touch display screen includes touch-sensitive screen, shielding layer and display screen, the shielding layer includes transparent basic unit and sets up transparent conducting layer on the basic unit; the shielding layer with the display screen stacks gradually on the touch-sensitive screen, the conducting layer of shielding layer with the display screen laminating, the conducting layer not by the conducting layer exposed portion that the display screen covered is provided with the ground connection part. The utility model discloses touch display screen installs behind electronic equipment, and the ground connection part can be connected with electronic equipment's ground, and the shielding layer between touch-sensitive screen and the display screen plays electromagnetic shield effect, and the electromagnetism is kept apart between display screen and the touch-sensitive screen, and the electric field of touch-sensitive screen itself is stable, and basic small in noise has improved the sensitivity of touch-sensitive screen, has promoted touch effect.
Description
Technical Field
The utility model relates to a display screen technical field especially relates to a touch display screen and electronic equipment.
Background
The existing interactive smart tablet usually uses a touch display screen, wherein the touch screen is a capacitive screen or an electromagnetic screen, as shown in fig. 1, and the touch screen 10 and the display screen 30 are adhered by a transparent adhesive layer 20.
However, the thickness of the transparent adhesive layer 20 is very thin, the distance between the touch screen 10 and the display screen 30 is very small, and the operating principle of the touch screen 10 is to detect the response generated by the electric field change when an electrified touch object approaches the touch screen 10, in order to improve the sensitivity of the touch screen 10, it is better to require the electric field of the touch screen 10 to be more stable, but the touch screen 10 is closer to the display screen 30, which may cause the electric field of the touch screen 10 to fluctuate when the display screen 30 operates, the basic Noise of the touch screen 10 becomes large, which severely restricts the improvement of the touch effect, the touch effect encounters a bottleneck, and finally, the problems of no response of small-tip touch, delayed touch response, low touch accuracy and the like are caused.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides an aim at: the utility model provides a touch display screen and electronic equipment to solve among the prior art display screen and cause electric field interference to the touch-sensitive screen, lead to the not good problem of touch effect.
In a first aspect, an embodiment of the present invention provides a touch display screen, including:
a touch screen;
a shielding layer comprising a transparent base layer and a transparent conductive layer disposed on the base layer;
a display screen;
the shielding layer with the display screen stacks gradually on the touch-sensitive screen, the conducting layer of shielding layer with the display screen laminating, the conducting layer not by the conducting layer exposed portion that the display screen covered is provided with the ground connection part.
Optionally, the shielding layer and the display screen are sequentially stacked on the touch screen through a transparent adhesive layer.
Optionally, the substrate is a transparent glass plate or plastic plate.
Optionally, the conductive layer is an indium tin oxide layer or a silver nanowire layer or a metal mesh layer disposed on the base layer.
Optionally, the exposed portion of the conductive layer is printed with silver paste.
Optionally, the grounding member is a metal foil, one end of the metal foil is connected to the exposed portion of the conductive layer, and the other end of the metal foil extends out of the shielding layer.
Optionally, the grounding component is a flexible printed circuit board, one end of the flexible printed circuit board is connected with the exposed part of the conductive layer, and the other end of the flexible printed circuit board is located outside the shielding layer.
Optionally, the grounding component is a conductive cloth, one end of the conductive cloth is connected with the exposed part of the conductive layer, and the other end of the conductive cloth extends out of the shielding layer.
Optionally, the grounding member is at least one of a metal foil, a flexible printed circuit board, and a conductive cloth, one end of the grounding member is connected to the exposed portion of the conductive layer, and the other end extends to the outside of the shielding layer.
In a second aspect, an embodiment of the present invention provides an electronic device, the electronic device includes a metal frame and any one of the first aspect, the touch display screen is connected to the metal frame, a ground component on a conductive layer of a shielding layer in the touch display screen is electrically connected to the metal frame.
The utility model discloses touch display screen includes touch-sensitive screen, shielding layer and display screen, and wherein the shielding layer includes transparent basic unit and sets up the transparent conducting layer in basic unit, and shielding layer and display screen stack gradually on the touch-sensitive screen, the conducting layer of shielding layer and the laminating of display screen, the conducting layer exposed portion that the conducting layer was not covered by the display screen is provided with the ground connection part. The utility model discloses touch display screen installs behind electronic equipment, and the ground connection part can be connected with electronic equipment's ground, and the shielding layer between touch-sensitive screen and the display screen plays electromagnetic shield effect, and the electromagnetism is kept apart between display screen and the touch-sensitive screen, and the electric field of touch-sensitive screen itself is more stable, and basic small in noise has improved the sensitivity of touch-sensitive screen, has promoted touch effect.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and examples.
FIG. 1 is a schematic diagram of a conventional touch display screen;
fig. 2 is a schematic cross-sectional structure diagram of a touch display screen according to an embodiment of the present invention;
fig. 3 is a schematic back structure diagram of the touch display screen according to the embodiment of the present invention;
fig. 4 is one of the schematic diagrams of the grounding component of the embodiment of the present invention;
fig. 5 is a second schematic diagram of the grounding component according to the embodiment of the present invention;
fig. 6 is a third schematic view of the grounding part according to the embodiment of the present invention;
fig. 7 is a fourth schematic view of the grounding member according to the embodiment of the present invention;
in the figure:
10. a touch screen; 20. a transparent adhesive layer; 30. a display screen; 40. a shielding layer; 401. a conductive layer exposed portion; 50. a metal frame; 60. a grounding member; 601. a metal foil; 6011. a metal foil body; 6012. an electrical connection portion; 602. a flexible printed circuit board.
Detailed Description
In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
As shown in fig. 2, a touch display screen according to an embodiment of the present invention includes a touch screen 10, a shielding layer 40 and a display screen 30.
The touch screen 10 is composed of a touch detection part and a touch screen controller, the touch detection part is used for detecting a touch position of a user and receiving and sending the touch position to the touch screen controller, the touch screen controller is mainly used for receiving touch information from a touch point detection device, converting the touch information into touch point coordinates and sending the touch point coordinates to a CPU, and the touch screen controller can receive and execute commands sent by the CPU at the same time, and in practical application, the touch screen 10 can be divided into a resistance-type touch screen and a capacitance-type touch screen.
The resistive touch screen is controlled by pressure induction, when a finger touches the resistive touch screen, two conductive layers of the resistive touch screen are contacted at the position of a touch point, the resistance is changed, signals are generated in the X direction and the Y direction, then the signals are sent to the touch screen controller, and the touch screen controller detects the signals and calculates the position of the touch point. The capacitive touch screen works by utilizing current induction of a human body, when a finger touches the capacitive touch screen, a coupling capacitor is formed on the surfaces of a user and the touch screen due to an electric field of the human body, the capacitor is a direct conductor, the finger sucks away a tiny current from a contact point and can transmit a fluctuation signal sent by touch, and the controller obtains the position of the touch point through accurate calculation of the current.
The display 30 may be a tft (thin Film transistor) liquid crystal display, a ufb (ultra Fine brightness) liquid crystal display, an stn (super Twisted chemical) display, an AMOLED (Active-matrix organic light emitting diode) display, or the like.
The shielding layer 40 may include a transparent base layer and a transparent conductive layer disposed on the base layer, and in an alternative embodiment, the base layer may be a transparent glass plate or a plastic plate, and the plastic plate may be an acrylic plate or an acrylic composite plate, or other transparent plastic plates. The conductive layer may be a transparent metal layer, and illustratively, may be an indium tin oxide (IOT) layer or a Silver Nanowire (SNW) layer or other transparent metal mesh layer, and may be combined with the base layer by coating, sputtering, evaporation, printing, and the like.
As shown in fig. 2, the shielding layer 40 and the display screen 30 are sequentially stacked on the touch screen 10, wherein the conductive layer of the shielding layer 40 is attached to the display screen 30 and disposed near the display screen 30, the exposed portion of the conductive layer of the shielding layer 40, which is not covered by the display screen 30, is provided with a grounding member 60, specifically, the base layer of the shielding layer 40 is attached to the touch screen 10 through a transparent adhesive layer 20, the conductive layer of the shielding layer 40 is attached to the display screen 30 through a transparent adhesive layer 20, and the shielding layer 40 has a larger area than the display screen 30, so that the display screen 30 does not completely cover the shielding layer 40, and thus the grounding member 60 can be disposed on the exposed portion of the conductive layer of the shielding layer 40, which is not covered by the display screen 30, in one example, the grounding member 60 is a conductive member, and after the touch display screen is mounted on an electronic device, the grounding member 60 can be connected to the ground of the electronic device, such as a metal frame, a metal case, or other metal parts connected to the ground on the electronic device.
The utility model discloses touch display screen includes touch-sensitive screen, shielding layer and display screen, and wherein the shielding layer includes transparent basic unit and sets up the transparent conducting layer in basic unit, and shielding layer and display screen stack gradually on the touch-sensitive screen, the conducting layer and the display screen laminating of shielding layer, the conducting layer exposed portion that the conducting layer was not covered by the display screen is provided with the ground connection part. The utility model discloses touch display screen installs behind electronic equipment, and the ground connection part can be connected with electronic equipment's ground, and the shielding layer between touch-sensitive screen and the display screen plays electromagnetic shield effect, and the electromagnetism is kept apart between display screen and the touch-sensitive screen, and the electric field of touch-sensitive screen itself is stable, and basic small in noise has improved the sensitivity of touch-sensitive screen, has promoted touch effect.
The utility model discloses an optional embodiment, can coat or print the silver thick liquid on the conducting layer exposed portion on shielding layer 40, wherein, the silver thick liquid can be by the thick liquid of the mechanical mixture that high-purity (99.9%) metallic silver's particle, adhesive, solvent, auxiliary agent are constituteed, with silver thick liquid coating or print on the conducting layer exposed portion after, can improve the electric conductive property of ground connection part 60 and conducting layer, further improve shielding layer 40's electromagnetic shield performance, realize having good electromagnetic shield effect between display screen 30 and the touch-sensitive screen 10.
As shown in fig. 2 and 3, in an alternative embodiment of the present invention, the grounding member 60 may be at least one of a metal foil, a flexible printed circuit board, a conductive cloth, and a conductive foam.
As shown in fig. 2 and 3, when the grounding member 60 is a metal foil, the grounding member 60 may be a copper foil, an aluminum foil, a silver foil, or the like, and taking the grounding member 60 as a copper foil as an example, one end of the copper foil is connected to the conductive layer exposed portion 401 of the shielding layer 40, and the other end extends to the outside of the shielding layer 40, specifically, the copper foil extends until it can be connected to the metal bezel 50 of the electronic device.
Similarly, when the grounding member 60 is a flexible printed circuit board, one end of the flexible printed circuit board is connected to the exposed portion 401 of the conductive layer, and the other end of the flexible printed circuit board is located outside the shielding layer 40, and when the grounding member 60 is a conductive cloth, one end of the conductive cloth is connected to the exposed portion 401 of the conductive layer, and the other end of the conductive cloth extends to the outside of the shielding layer 40.
In practical applications, a person skilled in the art can set the connection position of the grounding component 60 and the exposed portion 401 of the conductive layer and set the number of the grounding components 60 at will, as shown in fig. 3, one grounding component 60 can be set at each corner of the exposed portion 401 of the conductive layer, and certainly, the grounding component 60 can be set at the middle position of the exposed portion 401 of the conductive layer, the embodiment of the present invention does not limit the position and the number of the grounding components 60, and the person skilled in the art can determine the position and the number of the grounding components 60 according to the size of the touch display screen.
The embodiment of the utility model provides a through at least one kind in metal foil, flexible printed circuit board, the electrically conductive cloth as ground part 60 with shielding layer 40 be connected to electronic equipment's ground, can realize shielding layer 40 and reliably be connected to ground to good shielding effect has been realized, and ground connection simple process.
As shown in fig. 3, in the preferred embodiment of the present invention, the grounding member 60 is at least two of a metal foil, a flexible printed circuit board, and a conductive cloth, one end of the grounding member 60 is connected to the exposed portion 401 of the conductive layer, and the other end extends out of the shielding layer 40, and the grounding member 60 of the embodiment of the present invention is described below by taking the grounding member 60 including the metal foil 601 and the flexible printed circuit board 602 as an example.
As shown in fig. 3, which is a rear view of the touch display screen installed on the electronic device, fig. 3 includes a metal frame 50 of the electronic device, the touch screen 10 of the touch display screen is located in the metal frame 50, or the touch screen 10 is completely covered by the shielding layer 40, and the display screen 30 covers a part of the shielding layer 40, so that the shielding layer 40 presents a conductive layer exposed portion 401. As shown in fig. 3, the grounding member 60 includes a metal foil 601 and a flexible printed circuit board 602, one end of each of the metal foil 601 and the flexible printed circuit board 602 is electrically connected to the exposed portion 401 of the conductive layer, and the other end extends out of the shielding layer 40 and is electrically connected to the metal frame 50. In one example, the conductive layer exposed portion 401 has a square ring shape, and a metal foil 601 and a flexible printed circuit board 602 may be disposed on at least one side of the conductive layer exposed portion 401, as shown in fig. 3, the metal foil 601 and the flexible printed circuit board 602 are disposed on both left and right sides of the conductive layer exposed portion 401, the flexible printed circuit board 602 is disposed on a bottom edge of the conductive layer exposed portion 401, and the metal foil 601 is disposed on both ends and the flexible printed circuit board 602 is disposed between the metal foils 601 on both ends on the left and right sides. Of course, although the positional relationship between the metal foil 601 and the flexible printed circuit board 602 is exemplarily illustrated in fig. 3, in practical applications, a person skilled in the art may arbitrarily set the positional relationship and the number of the metal foil 601 and the flexible printed circuit board 602.
The embodiment of the utility model provides a be connected to ground as the ground connection part through copper foil and flexible printed circuit board simultaneously, shielding layer ground connection dependable performance, it is electrically conductive good, it is effectual to shield to production simple process.
Fig. 5 is a schematic structural diagram of another grounding member 60 according to an embodiment of the present invention, and as shown in fig. 5, the grounding member 60 according to the embodiment of the present invention includes a metal foil 601 and a flexible printed circuit board 602, wherein the metal foil 601 is disposed on the left side and the right side of the exposed portion 401 of the conductive layer, the metal foil 601 is a thin copper sheet with a slender shape, the length of the metal foil 601 is substantially equal to the length of the exposed portion 401 of the conductive layer, one part of the area of the metal foil 601 in the width direction is located on the exposed portion 401 of the conductive layer, and the other part of the metal foil 601 is located on the metal frame 50, so as to increase the grounding area of the exposed portion 401 of the conductive layer and improve the grounding performance of the shielding layer 40. In addition, a flexible printed circuit board 602 is further disposed on the metal foil 601 to connect the metal foil 601 to the metal frame 50, and moreover, a flexible printed circuit board 602 is also disposed on the bottom edge of the exposed portion 401 of the conductive layer and is grounded, so that the bottom edge of the exposed portion 401 of the conductive layer is also connected to the ground, and finally, all parts of the whole shielding layer 40 are uniformly connected to the ground, so that the shielding layer 40 has good grounding performance and a good shielding effect.
Fig. 6 is a schematic structural view of another grounding member 60 according to an embodiment of the present invention, and as shown in fig. 6, the grounding member 60 according to an embodiment of the present invention includes a metal foil 601 and a flexible printed circuit board 602, wherein, the metal foil 601 is arranged at the left side and the right side of the exposed part 401 of the conductive layer, the metal foil 601 is a slender copper sheet, the length of the metal foil 601 is approximately equal to the length of the exposed part 401 of the conductive layer, the metal foil 601 comprises a slender metal foil body 6011 and electrical connection parts 6012 positioned at two ends of the metal foil body 6011, the metal foil body 6011 is positioned in the area where the exposed part 401 of the conductive layer is positioned, the electrical connection parts 6012 at two ends extend from the metal foil body 6011 to the outside of the exposed part 401 of the conductive layer and are electrically connected with the metal frame 50, the metal foil 601 disposed in the exposed portion 401 of the conductive layer increases the grounding area of the exposed portion 401 of the conductive layer, thereby improving the grounding performance of the shielding layer 40. In addition, flexible printed circuit boards 602 are further disposed on the left side, the right side and the bottom edge of the exposed portion 401 of the conductive layer to connect the shielding layer 40 to the metal frame 50, so that the shielding layer 40 has good grounding performance and a good shielding effect.
Fig. 7 is a schematic structural diagram of another grounding component 60 according to an embodiment of the present invention, and as shown in fig. 7, the grounding component 60 according to the embodiment of the present invention includes a metal foil 601 and a flexible printed circuit board 602, and different from fig. 6, the length of the metal foil 601 is shortened, the number of the metal foils 601 is increased, and the grounding performance of the shielding layer 40 can be improved as well, and a good shielding effect is achieved.
It should be noted that, although the structure of the grounding component 60 according to the embodiment of the present invention is described with reference to fig. 3 to 7, in practical applications, a person skilled in the art may replace the copper foil with an aluminum foil, a conductive cloth, a conductive foam, or the like, and may also set different numbers of copper foils and flexible printed circuit boards, which is not limited to this.
The embodiment of the utility model provides an electronic equipment is still provided, electronic equipment include the metal frame and the utility model discloses the touch display screen that any embodiment provided, touch display screen and metal frame are connected, and the ground part on the conducting layer of shielding layer is connected with the metal frame electricity in the touch display screen, and of course, ground part can also with electronic equipment's metal object, other ground connection metalwork or electron board electricity and so on be connected.
The utility model discloses among the electronic equipment, touch display screen includes the touch-sensitive screen, shielding layer and display screen, wherein the shielding layer includes transparent basic unit and sets up the transparent conducting layer in basic unit, shielding layer and display screen stack gradually on the touch-sensitive screen, the conducting layer and the display screen laminating of shielding layer, the conducting layer exposed portion that the conducting layer was not covered by the display screen is provided with the ground connection part, the ground connection part is connected in order to realize ground connection with electronic equipment's metal frame electricity, shielding layer between touch-sensitive screen and the display screen plays the electromagnetic shield effect, electromagnetic isolation between display screen and the touch-sensitive screen, the electric field of touch-sensitive screen itself is stable, basic small in noise, the sensitivity of touch-sensitive screen has been improved, touch effect has been promoted.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single technical solution, and such description is for clarity only, and those skilled in the art should take the description as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments that may be understood by those skilled in the art.
The technical principle of the present invention is described above with reference to specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without any inventive effort, which would fall within the scope of the present invention.
Claims (10)
1. A touch display screen, comprising:
a touch screen;
a shielding layer comprising a transparent base layer and a transparent conductive layer disposed on the base layer;
a display screen;
the shielding layer with the display screen stacks gradually on the touch-sensitive screen, the conducting layer of shielding layer with the display screen laminating, the conducting layer not by the conducting layer exposed portion that the display screen covered is provided with the ground connection part.
2. The touch display screen of claim 1, wherein the shielding layer and the display screen are sequentially laminated on the touch screen through a transparent adhesive layer.
3. The touch display screen of claim 1, wherein the substrate is a transparent glass or plastic sheet.
4. The touch display screen of claim 3, wherein the conductive layer is an indium tin oxide layer or a silver nanowire layer or a metal mesh layer disposed on the base layer.
5. The touch display screen of claim 1, wherein the exposed portions of the conductive layer are printed with silver paste.
6. The touch display screen of any one of claims 1-5, wherein the grounding member is a metal foil, one end of the metal foil is connected to the exposed portion of the conductive layer, and the other end of the metal foil extends out of the shielding layer.
7. The touch display screen of any one of claims 1-5, wherein the grounding member is a flexible printed circuit board, one end of the flexible printed circuit board is connected to the exposed portion of the conductive layer, and the other end of the flexible printed circuit board is located outside the shielding layer.
8. The touch display screen of any one of claims 1-5, wherein the grounding member is a conductive cloth, one end of the conductive cloth is connected to the exposed portion of the conductive layer, and the other end of the conductive cloth extends out of the shielding layer.
9. The touch display screen of any one of claims 1-5, wherein the grounding member is at least one of a metal foil, a flexible printed circuit board, and a conductive cloth, and one end of the grounding member is connected to the exposed portion of the conductive layer, and the other end extends out of the shielding layer.
10. An electronic device, comprising a metal frame and the touch display screen according to any one of claims 1 to 9, wherein the touch display screen is connected to the metal frame, and a grounding component on a conductive layer of a shielding layer in the touch display screen is electrically connected to the metal frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121021732.0U CN214751827U (en) | 2021-05-13 | 2021-05-13 | Touch display screen and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121021732.0U CN214751827U (en) | 2021-05-13 | 2021-05-13 | Touch display screen and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214751827U true CN214751827U (en) | 2021-11-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121021732.0U Active CN214751827U (en) | 2021-05-13 | 2021-05-13 | Touch display screen and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214751827U (en) |
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2021
- 2021-05-13 CN CN202121021732.0U patent/CN214751827U/en active Active
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