CN216623215U

CN216623215U - Touch screen module, display module and electronic equipment

Info

Publication number: CN216623215U
Application number: CN202123220587.1U
Authority: CN
Inventors: 张鹏飞
Original assignee: Qingdao Vicino Electronics Co ltd
Current assignee: Qingdao Vicino Electronics Co ltd
Priority date: 2021-12-20
Filing date: 2021-12-20
Publication date: 2022-05-27
Anticipated expiration: 2031-12-20

Abstract

The utility model provides a touch screen module, a display module and electronic equipment. The touch screen module include: the touch screen comprises an induction layer and a conducting layer at least positioned on one side of the induction layer; a conductive base shell surrounding a sidewall of the touch screen and a side of the sensing layer facing away from the conductive layer; a conductive adhesive layer adapted to connect the conductive layer and the conductive base shell. According to the utility model, the conducting layer extends to the conducting base shell through the conducting adhesive layer, so that the conducting layer, the conducting adhesive layer and the conducting base shell form a complete shielding space, and further the electromagnetic shielding function of the induction layer on an external environment electromagnetic field is realized, the reliability of the touch screen module is improved, and the structure of the touch screen module is simplified.

Description

Touch screen module, display module and electronic equipment

Technical Field

The utility model relates to the field of touch screens, in particular to a touch screen module, a display module and electronic equipment.

Background

Touch screen technology has become the most accepted computer input mode by common people after keyboard, mouse, handwriting pad and voice input. By using the technology, the man-machine interaction is more straightforward, and great convenience is brought to users. Meanwhile, the man-machine interaction mode gives a brand-new appearance to the multimedia, and is a brand-new multimedia interaction device with great attraction.

Touch screen the essence of a touch screen is a sensor, which consists of a touch sensing component and a touch screen controller. The touch detection component is arranged in front of the display screen and used for detecting the touch position of a user and sending the touch position to the touch screen controller after receiving the touch position; the touch screen controller is mainly used for receiving touch information from the touch point detection device, converting the touch information into touch point coordinates and sending the touch point coordinates to the CPU, and meanwhile, receiving and executing commands sent by the CPU. Currently, touch screens are broadly classified into four types, infrared type, resistive type, surface acoustic wave type, and capacitive type, according to the type of sensor. (1) Infrared ray formula touch-sensitive screen: the infrared touch screen is provided with a circuit board outer frame in front of the display, and the circuit board is provided with infrared transmitting tubes and infrared receiving tubes on four sides of the screen, and the infrared transmitting tubes and the infrared receiving tubes are in one-to-one correspondence to form a transverse and vertical crossed infrared matrix. When a user touches the screen, two infrared rays in the transverse direction and the vertical direction passing through the position can be blocked by fingers, so that the position of a touch point on the screen can be judged. Any touching object can change the infrared ray on the touch point to realize the touch screen operation. The infrared touch screen is free from current, voltage and static interference and is suitable for certain severe environmental conditions. Its main advantages are low cost, easy installation, no need of card or any other controller, and can be used in various grades of computer. (2) A resistive touch screen: the main part of the resistance touch screen is a resistance film screen which is matched with the surface of a display, and two ITO transparent oxidized metal conducting layers are respectively coated on the surface of the tempered glass. The resistive touch screen utilizes pressure sensing for control. When a finger touches the screen, the two conductive layers are in contact at the position of a touch point, the resistance changes, signals are generated in the X direction and the Y direction and then transmitted to the touch screen controller, the controller detects the contact and calculates the position of (X, Y), and then the operation is carried out according to the mode of simulating a mouse. The resistance-type touch screen is not affected by dust, water and dirt and can work in severe environment. However, the outer layer of the composite film is made of plastic materials, so that the anti-explosion performance is poor, and the service life is influenced to a certain extent. (3) Surface acoustic wave touch screen: a surface acoustic wave is a mechanical wave that propagates along the surface of a medium. Ultrasonic transducers are mounted at the corners of a surface acoustic wave touch screen to transmit a high frequency acoustic wave across the screen surface, and when a finger touches the screen, the acoustic wave at the touch point is blocked, thereby determining the coordinate position. The surface acoustic wave touch screen is not influenced by environmental factors such as temperature, humidity and the like, has extremely high resolution, excellent scratch resistance, long service life and high light transmittance, can keep clear and transparent image quality, and is most suitable for public places. However, dust, water and dirt can seriously affect the performance of the panels and require frequent maintenance to maintain the smoothness of the panels. (4) Capacitive touch screen: the touch screen works by utilizing current induction of a human body, a layer of transparent special metal conductive substance is pasted on the surface of glass, and when a conductive object touches the touch screen, the capacitance of a contact point can be changed, so that the touched position can be detected. But does not react to touch with a gloved hand or a hand-held non-conductive object because of the addition of a more insulating medium. The capacitive touch screen can well sense slight and quick touch, prevent scraping, is not afraid of dust, water and dirt influence, and is suitable for being used under severe environment. However, the capacitance varies with temperature, humidity or environmental electric field, so that the stability is poor, the resolution is low and the drift is easy.

Along with the technological progress, more and more products enter the touch era, and various electronic devices generate more and more electromagnetic interference during working, so that the operation sensitivity of the electronic devices can be seriously influenced, and even misoperation is caused. Long-term exposure to electromagnetic environmental pollution can also cause considerable harm to human bodies. In addition, the electromagnetic signals generated by the electronic equipment are also at risk of being stolen, which causes information leakage. In the industrial control field, especially in military touch screens, stronger anti-interference capability is required to be realized.

The existing touch screen is difficult to consider both high reliability and simple structure.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the present invention is to overcome the defect that the existing touch screen device is difficult to combine high reliability and simple structure, and further provide a touch screen module, a display module and an electronic device.

The utility model provides a touch screen module, comprising: the touch screen comprises an induction layer and a conducting layer at least positioned on one side of the induction layer; a conductive base shell surrounding a sidewall of the touch screen and a side of the sensing layer facing away from the conductive layer; a conductive adhesive layer adapted to connect the conductive layer and the conductive base shell.

Optionally, the conductive adhesive layer covers the conductive layer in the edge area of the touch screen and extends to the surface of the conductive base shell.

Optionally, the conductive adhesive layer is of a ring structure.

Optionally, the conductive adhesive layer includes a double-sided conductive adhesive.

Optionally, the thickness of the conductive adhesive layer is less than 0.1 mm.

Optionally, the touch screen further includes: the cover glass layer covers one side, away from the induction layer, of the conductive layer, and covers the conductive bonding layer; the conductive base shell surrounds the sidewalls of the cover glass layer.

Optionally, the touch screen further includes: the transparent optical adhesive layer is positioned between the cover plate glass layer and the conducting layer; the conductive adhesive layer is located around the side portion of the transparent optical adhesive layer.

Optionally, the thickness of the transparent optical adhesive layer is 0.1mm to 0.25 mm.

The utility model provides a display module, which comprises the touch screen module; the display screen body is arranged on one side, deviating from the conducting layer, of the sensing layer, and the display screen body is located between the touch screen and the conducting base shell.

The utility model provides electronic equipment comprising the display module.

The technical scheme of the utility model has the following advantages:

the touch screen module of the utility model comprises: the touch screen comprises an induction layer and a conducting layer at least positioned on one side of the induction layer; a conductive base shell surrounding a sidewall of the touch screen and a side of the sensing layer facing away from the conductive layer; a conductive adhesive layer adapted to connect the conductive layer and the conductive base shell. According to the utility model, the conducting layer extends to the conducting base shell through the conducting adhesive layer, so that the conducting layer, the conducting adhesive layer and the conducting base shell form a complete shielding structure, and the electromagnetic shielding function of the induction layer on an external environment electromagnetic field is further realized. The touch screen has the advantages that the stability of an electric field of the touch screen and smaller basic noise are ensured, the sensitivity of the touch screen is improved, and the touch effect is improved. In conclusion, the reliability of the touch screen module is improved. In addition, the conducting layer in the touch screen is used as one part of the shielding structure, shielding layers such as a shielding silk screen do not need to be additionally arranged, and the structure of the touch screen module is simplified.

According to the display module, the touch screen, the conductive base shell and the conductive bonding layer are used for realizing electromagnetic isolation of the display screen body.

After the display module is installed on the electronic equipment, the electromagnetic compatibility of the touch screen module can be realized by connecting the conductive base shell with the grounding part of the electronic equipment.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic structural diagram of a touch screen module according to the present invention;

fig. 2 is a schematic structural diagram of a display module according to the present invention.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Example 1

The present embodiment provides a touch screen module, as shown in fig. 1, including:

the touch screen comprises an induction layer 1 and a conducting layer 2 at least positioned on one side of the induction layer 1;

a conductive base shell 3, wherein the conductive base shell 3 surrounds the side wall of the touch screen and the side of the sensing layer 1, which faces away from the conductive layer 2;

a conductive adhesive layer 4, said conductive adhesive layer 4 being adapted to connect said conductive layer 2 and said conductive base shell 3.

In this embodiment, through paste around the conducting layer 2 on the response layer 1 conducting layer 4 can make on the response layer 1 conducting layer 2 passes through conducting layer 4 extends to electrically conductive basic shell 3, then conducting layer 2, electrically conductive adhesive layer 4 and electrically conductive basic shell 3 forms a complete shielding structure, and then realizes the electromagnetic shield function of response layer to external environment electromagnetic field. The touch screen has the advantages that the stability of an electric field of the touch screen and smaller basic noise are ensured, the sensitivity of the touch screen is improved, and the touch effect is improved. In conclusion, the reliability of the touch screen module is improved. In addition, the conducting layer in the touch screen is used as a part of the shielding structure, shielding layers such as a shielding silk screen do not need to be additionally arranged, and the structure of the touch screen module is simplified.

In this embodiment, the conductive adhesive layer covers the conductive layer 2 in the edge area of the touch screen and extends to the surface of the conductive base shell 3. In one embodiment, the conductive layer 2 is an Indium Tin Oxide (ITO) conductive layer having a sheet resistance of 4 to 6 ohms, which may provide better shielding, such as 4, 5, or 6 ohms.

In this embodiment, the touch screen further includes: the cover plate glass layer 5 covers one side, away from the induction layer 1, of the conductive layer 2, and the cover plate glass layer 5 covers the conductive bonding layer 4; the conductive base housing 3 surrounds the side walls of the cover glass layer 5.

In this embodiment, the touch screen further includes: the transparent optical adhesive layer 6 is positioned between the cover glass layer 5 and the conducting layer 2; the conductive adhesive layer 4 is located around the side of the transparent optical glue layer 6. In one embodiment, the thickness of the transparent optical glue layer 6 is 0.1mm to 0.25mm, such as 0.1mm, 0.15mm, 0.2mm or 0.25 mm. When the thickness of the transparent optical adhesive layer 6 is less than 0.1mm, the bonding firmness degree can be obviously reduced, when the thickness of the transparent optical adhesive layer 6 is more than 0.25mm, the bonding is firm enough, more transparent optical adhesives are used, waste is caused, and the production cost is improved.

In one embodiment, the conductive adhesive layer 4 comprises a double-sided conductive adhesive. One bonding surface of the double-sided conductive adhesive is connected with the edge part of the conductive layer 2 and the conductive base shell 3; and the other bonding surface of the double-sided conductive adhesive is connected with the cover plate glass layer 5.

In one embodiment, the conductive adhesive layer 4 is a ring structure, and the conductive adhesive layer 4 is filled around the transparent optical adhesive layer 6 and in a gap formed by the edge portion of the cover glass layer 5 and the conductive base shell 3. The closed system formed by the conductive base shell 3, the conductive bonding layer 4 and the cover plate glass layer 5 can prevent pollutants such as dust and the like from entering the internal resistance of the touch screen module, so that the stability and the service life of the touch screen module are improved.

In one embodiment, the thickness of the conductive adhesive layer 4 is less than 0.1mm, such as 0.01mm, 0.02mm, 0.05mm, or 0.1 mm.

In one embodiment, the sensing layer 1 is provided with an Indium Tin Oxide (ITO) conductive layer on two opposite sides. In one embodiment, the touch screen and the conductive base housing 3 at the bottom of the touch screen have a receiving groove 7 therebetween for receiving a display screen body 8.

Example 2

The present embodiment provides a display module, as shown in fig. 2, including:

the touch screen module provided by the embodiment;

the display screen body 8, the display screen body 8 sets up the response layer 1 deviates from one side of conducting layer 2, and the display screen body 8 is located the touch-sensitive screen with between the electrically conductive base shell 3. The present embodiment utilizes the shielding structure formed by the conductive layer 2, the conductive base shell 3 and the conductive adhesive layer 4 to realize the electromagnetic isolation of the display screen body 8.

In one embodiment, the display body 8 includes a Thin Film Transistor (TFT) liquid crystal display, a Super Fine highlight (UFB) liquid crystal display, a Super Twisted Nematic (STN) display, an Active Matrix Organic Light Emitting Diode (AMOLED) display, and the like.

Example 3

The embodiment provides an electronic device, which comprises the display module provided by the embodiment. After the display module is installed on the electronic equipment, the electromagnetic compatibility of the touch screen module can be realized by connecting the conductive base shell 3 with a grounding part of the electronic equipment.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims

1. A touch screen module, comprising:

the touch screen comprises an induction layer and a conducting layer at least positioned on one side of the induction layer;

a conductive base shell surrounding a sidewall of the touch screen and a side of the sensing layer facing away from the conductive layer;

a conductive adhesive layer adapted to connect the conductive layer and the conductive base shell.

2. The touch screen module of claim 1, wherein the conductive adhesive layer covers the conductive layer in an edge region of the touch screen and extends to a surface of the conductive base housing.

3. The touch screen module of claim 1, wherein the conductive adhesive layer is a ring structure.

4. The touch screen module of claim 1, wherein the conductive adhesive layer comprises a double-sided conductive adhesive.

5. The touch screen module of claim 1, wherein the conductive adhesive layer has a thickness of less than 0.1 mm.

6. The touch screen module of claim 1, wherein the touch screen further comprises: the cover glass layer covers one side, away from the induction layer, of the conductive layer, and covers the conductive bonding layer; the conductive base shell surrounds the sidewalls of the cover glass layer.

7. The touch screen module of claim 6, wherein the touch screen further comprises: the transparent optical adhesive layer is positioned between the cover plate glass layer and the conducting layer; the conductive adhesive layer is located around the side portion of the transparent optical adhesive layer.

8. The touch screen module of claim 7, wherein the thickness of the transparent optical adhesive layer is 0.1mm to 0.25 mm.

9. A display module, comprising:

the touch screen module of any one of claims 1 to 8;

the display screen body is arranged on one side, deviating from the conducting layer, of the sensing layer, and the display screen body is located between the touch screen and the conducting base shell.

10. An electronic device comprising the display module of claim 9.