CN210199720U - Touch screen, display device and mobile terminal - Google Patents
Touch screen, display device and mobile terminal Download PDFInfo
- Publication number
- CN210199720U CN210199720U CN201920807692.9U CN201920807692U CN210199720U CN 210199720 U CN210199720 U CN 210199720U CN 201920807692 U CN201920807692 U CN 201920807692U CN 210199720 U CN210199720 U CN 210199720U
- Authority
- CN
- China
- Prior art keywords
- touch screen
- circuit board
- layer
- flexible circuit
- touch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
A touch screen, a display device and a mobile terminal are provided, wherein the touch screen comprises: a substrate; the touch layer and the shielding layer are respectively arranged on two side surfaces of the substrate; the touch layer is electrically connected with a control main board of the host through the flexible circuit board; and the conductive metal layer is in conductive connection with the shielding layer and is in conductive connection with the grounding area on the flexible circuit board. The shielding layer and the flexible circuit board are conductively connected through the conductive metal layer, so that the auxiliary end arm connected with the shielding layer is prevented from being arranged on the flexible circuit board, the arrangement area of the flexible circuit board is reduced, and the product cost is reduced.
Description
Technical Field
The utility model relates to a touch screen technical field, concretely relates to touch screen, a display device and a mobile terminal.
Background
In order to prevent electromagnetic interference from a display or other electrical components, a shielding layer is usually added on a touch sensor layer. In the prior art, an extension arm needs to be extended from a flexible printed circuit board to be connected with a shielding layer, usually, the extension arm needs to be bonded and connected with a GND area on the flexible printed circuit board through an ACF conductive adhesive film, and the extension arm also belongs to the flexible printed circuit board, so that the area of the flexible printed circuit board is enlarged and the manufacturing cost of the touch screen is increased by the arrangement mode; secondly, the extended flexible printed circuit board is connected with the shielding layer through a binding process, and the binding process is complex, so that the yield of a production line is not improved, and the labor cost is reduced; in addition, since the flexible printed circuit board needs to be bound with the shielding layer through the ACF glue, the ACF conductive glue is easily dissolved by heat, so that the flexible printed circuit board is separated from the shielding layer, and the shielding layer fails.
SUMMERY OF THE UTILITY MODEL
Therefore, the to-be-solved technical problem of the utility model lies in overcoming the defect that the technology of the touch screen among the prior art is complicated, with high costs and shielding layer failure rate is high to provide a touch screen, a display device and a mobile terminal.
Therefore, the technical scheme of the utility model is as follows:
a touch screen, comprising:
a substrate;
the touch layer and the shielding layer are respectively arranged on two opposite side surfaces of the substrate;
the touch layer is electrically connected with a control main board of the host through the flexible circuit board;
and the conductive metal layer is electrically connected with the shielding layer and is electrically connected with the grounding area on the flexible circuit board.
Furthermore, an opening area is arranged on the flexible circuit board, a conductive circuit in conduction connection with the grounding area is arranged in the opening area, and the conductive metal layer is electrically connected with the conductive circuit.
Furthermore, the opening area is arranged on one side of the flexible circuit board close to the shielding layer.
Further, the conductive metal layer is a conductive metal foil.
Further, the conductive metal layer is a copper foil.
Further, the flexible circuit board is connected with the touch layer in a bonding mode.
Furthermore, the flexible printed circuit board further comprises an electromagnetic shielding metal adhesive attached to the copper foil, and the electromagnetic shielding metal adhesive is respectively in conduction connection with the flexible printed circuit board and the shielding layer.
Furthermore, the electromagnetic shielding metal adhesive is a copper foil conductive adhesive tape.
A display device, comprising:
a housing;
the display panel is covered on the shell;
and the display module is arranged in the shell, and the touch screen is electrically connected with the display module, the touch screen is the touch screen described in any item above, and the touch layer is fixedly connected with the display panel.
A mobile terminal, comprising:
a housing;
the display panel is covered on the shell;
the control device is arranged in the shell;
and the touch screen is arranged in the shell and fixedly connected with the display panel, and the touch screen is electrically connected with the control device.
The utility model discloses technical scheme has following advantage:
1. the utility model provides a touch screen, it includes: a substrate; the touch layer and the shielding layer are respectively arranged on two side surfaces of the substrate; the touch layer is electrically connected with a control main board of the host through the flexible circuit board; and the conductive metal layer is in conductive connection with the shielding layer and is in conductive connection with the grounding area on the flexible circuit board. The conductive metal layer is arranged to replace the auxiliary end arm of the original flexible circuit board, so that the material cost for manufacturing the flexible circuit board is reduced, and the product cost is reduced; secondly, because the auxiliary end arm of the flexible circuit board is cancelled, secondary bonding of the auxiliary end arm and the shielding layer is avoided, and prepressing and pressing processes related to bonding are reduced; only need on the conductive metal layer with opening area or shielding layer junction attached electromagnetic shield metal glue can, the simple operation has simplified production technology, reduces the cost of labor. 2. The utility model provides a touch screen, be equipped with the opening district on the flexible circuit board, the opening district expose with ground connection district turn-on connection's conducting wire, the conducting metal layer with conducting wire turn-on connection. The opening area is arranged on the flexible circuit board, the grounding conductive circuit in the opening area is exposed, the conductive metal layer is allowed to be in conductive communication with the opening area, and grounding of the shielding layer is achieved.
3. The utility model provides a touch screen, wherein the conductive metal layer is a conductive metal foil; further, the conductive metal layer is a copper foil; the flexible circuit board is connected with the touch layer in a bonding mode; the copper foil is connected with the flexible circuit board and the shielding layer through electromagnetic shielding metal glue. The auxiliary end arm of the original flexible circuit board is replaced by the thin copper foil with a simple structure, so that the material cost for manufacturing the flexible circuit board is reduced, and the product cost is reduced; secondly, because the auxiliary end arm of the flexible circuit board is cancelled, secondary bonding of the auxiliary end arm and the shielding layer is avoided, and prepressing and pressing processes related to bonding are reduced; only the electromagnetic shielding metal adhesive is attached to the copper foil at the connection part with the opening area or the shielding layer, so that the operation is convenient and fast, the production process is simplified, and the labor cost is reduced; in addition, the copper foil and the shielding layer are surface-based, so that the copper foil has a large conductive contact area and is high in connectivity.
4. The utility model provides a touch screen, electromagnetic shield metal glue is copper foil conducting resin. Because the temperature resistance of the copper foil conductive adhesive is superior to that of an ACF bonding adhesive and is not easy to be decomposed by heat, the separation failure of the flexible circuit board and the shielding layer caused by the ACF bonding adhesive which is dissolved by heat is avoided.
5. The utility model provides a display device, it includes: a housing; a display panel; and the display module is arranged in the shell, and the touch screen is electrically connected with the display module, the touch screen is the touch screen described in any item above, and the touch layer is fixedly connected with the display panel. Because display device includes the touch-control screen, consequently also possess the utility model discloses a touch-control screen all advantages that have.
6. A mobile terminal, comprising: a housing; the display panel is covered on the shell; the control device is arranged in the shell; the touch screen is arranged in the shell and fixedly connected with the display panel, and the touch screen is electrically connected with the control device. Because this mobile terminal includes the touch-control screen, consequently also possesses the utility model discloses a touch-control screen all advantages that have.
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 embodiments or the technical solutions in 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a front view of a connection manner of a flexible circuit board and a touch screen in the prior art;
fig. 2 is a side view of the connection manner between the flexible circuit board and the touch screen shown in fig. 1;
fig. 3 is a front view of the connection mode between the flexible circuit board and the touch panel according to the present invention;
fig. 4 is a side view of the connection manner between the flexible circuit board and the touch screen shown in fig. 3;
fig. 5 is a back view of the connection manner of the flexible circuit board and the touch screen shown in fig. 3.
Description of reference numerals:
in FIGS. 1-2:
1' -a substrate; 2' -a touch layer; a 3' -shield layer; 4' -a flexible circuit board; 41' -auxiliary end arm; 42' -main end arm; 6' -a ground region;
in FIGS. 3-5:
1-a substrate; 2-a touch layer; 3-a shielding layer; 4-a flexible circuit board; 5-a conductive metal layer; 6-a ground region; 7-open area.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to 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", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific 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 is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
As shown in fig. 1-2, a touch panel of the prior art includes a substrate 1 ', a touch layer 2', and a shielding layer 3 ', where the touch layer 2' and the shielding layer 3 'are respectively disposed on two opposite sides of the substrate 1'. The substrate 1 'is a glass substrate or film, the touch layer 2' is formed on the substrate 1 'by electroplating a conductor such as ITO according to a designed pattern, and the shielding layer 3' is a whole ITO layer formed on the other surface of the substrate. To ground the shielding layer 3 ', the touch layer 2' and the shielding layer 3 'are connected by the flexible circuit board 4'.
Referring to fig. 1, in order to connect with the shielding layer 3 'in the prior art, the flexible circuit board 4' is configured as a y-type, and an auxiliary terminal arm 41 'is added to connect the shielding layer 3' and the grounding region 6 'on the basis of the original flexible circuit board 4'. The area of the flexible circuit board 4' is increased, so that the cost of the touch screen is not reduced; in the touch screen with the structure, the main end arm 42 ' and the auxiliary end arm 41 ' of the flexible circuit board 4 ' are bonded with the touch layer 2 ' and the shielding layer 3 ' respectively through the ACF conductive adhesive, and the touch layer 2 ' and the shielding layer 3 ' are not on the same surface, so that twice bonding is required, the process is complex, and the cost is not reduced.
The utility model discloses a display device, which can be a television or a computer display, for example, wherein the display device comprises a shell, a panel (LENS), a display module and a touch screen which are arranged in the shell; the touch screen is fixedly arranged on the inner side of the panel and electrically connected with the display module to output display contents of the display module to the outside. The panel is usually made of toughened glass, acrylic, PC or PET.
Certainly, the mobile terminal may also be a mobile terminal, where the mobile terminal may be a mobile phone, a tablet computer, an electronic book, a game machine, and the like, where the mobile terminal includes a housing, a display panel, a control device, and a touch screen, where the panel is covered on the housing; the control device is arranged in the shell, the touch screen is arranged in the shell and fixedly connected with the inner side surface of the display panel, and the touch screen is electrically connected with the control device so as to output display to the outside or receive an instruction input by the touch screen. The panel is usually made of toughened glass, acrylic, PC or PET.
Referring to fig. 3-5, the touch screen in this embodiment refers to a capacitive touch screen, which includes a substrate 1, a touch layer 2 and a shielding layer 3, where the touch layer 2 and the shielding layer 3 are respectively disposed on two sides of the substrate 1. The substrate 1 may be a glass substrate or a film, the touch layer 2 is formed on the substrate 1 by electroplating a conductor such as ITO according to a designed pattern, the shielding layer 3 is a whole ITO layer formed on the other surface of the substrate, and the touch layer 2 is fixedly connected with the panel through an OCA adhesive layer.
The touch layer 2 includes a horizontal and a vertical electrode arrays made of ITO (which is a transparent conductive material) on the surface of the substrate, the horizontal and vertical electrodes respectively form capacitance with the ground, when touching, the capacitive screen detects the horizontal and vertical electrode arrays respectively at one time, determines the horizontal coordinate and the vertical coordinate respectively according to the change of capacitance before and after touching, and combines them into a planar touch coordinate, wherein the contact sensor of the touch layer can be formed by yellow light.
The shielding layer 3 is used to prevent the electronic signals of other electronic components below the substrate from affecting the sensing of the touch sensor of the touch layer 2. The shielding layer 3 is conductively connected with the grounding area 6 of the flexible circuit board 4. The touch layer 2 is electrically connected with the control mainboard through the flexible circuit board 4, the touch sensor of the specific touch layer 2 can be connected to the touch IC chip through the flexible circuit board 4, and the touch IC chip is connected to the control mainboard through the flexible circuit board. The flexible Printed Circuit board 4 is a flexible Printed Circuit board fpc (flexible Printed Circuit board), which is a Printed Circuit made of a flexible insulating base material; the flexible circuit board 4 is electrically connected with the touch layer 2 through an ACF conductive adhesive or a low-resistance conductor, in this embodiment, one end of the flexible circuit board 4 is bonded with the touch layer 2 through an ACF conductive adhesive, and the other end is electrically connected with the control motherboard.
Referring to fig. 3-5, the touch screen in this embodiment further includes a conductive metal layer 5, the conductive metal layer 5 is conductively connected to the shielding layer 3, and the conductive metal layer 5 is conductively connected to the GND ground area 6 on the flexible circuit board 4. The shielding layer and the flexible circuit board are conductively connected through the conductive metal layer 5, and the auxiliary end arm connected with the shielding layer is prevented from being arranged on the flexible circuit board, so that the arrangement area of the flexible circuit board is reduced, and the product cost is reduced.
An opening area 7 is arranged on the flexible circuit board 4, copper conducting circuits in conducting connection with the grounding area 6 are exposed in the opening area 7, one end of the conducting metal layer 5 is connected with the shielding layer 3, and the other end of the conducting metal layer strides over the substrate 1 to be in conducting connection with the conducting circuits in the opening area 7 of the flexible circuit board 4 at the end part of the touch layer 2. By providing the opening area 7 on the flexible circuit board 4 and exposing the ground conductive line in the opening area 7, the conductive metal layer 5 is allowed to be in conductive communication with the ground conductive line, thereby achieving grounding of the shield layer 3.
An opening area 7 is formed on the surface of one side, close to the shielding layer 3, of the flexible circuit board 4 in an etching mode, and in order to achieve conduction of the shielding layer 3 and a conducting circuit in the opening area 7, the conducting metal layer 5 is made of sheet conducting metal. In this embodiment, a copper foil is used, but other conductive metals, such as silver foil, may be used as the conductive metal layer 5. The copper foil is arranged to replace the auxiliary end arm 41 'in the original flexible circuit board 4', so that the material cost for manufacturing the flexible circuit board is reduced, and the product cost is reduced; secondly, because the auxiliary end arm of the flexible circuit board is cancelled, secondary bonding of the auxiliary end arm and the shielding layer is avoided, and prepressing and pressing processes related to bonding are reduced; only electromagnetic shielding metal glue is adhered to the joint of the copper foil and the opening area and the joint of the copper foil and the shielding layer, so that the operation is convenient and fast, the production process is simplified, and the labor cost is reduced; in addition, the copper foil is in surface contact with the shielding layer, so that the copper foil has a large conductive contact area and is high in connectivity.
In order to fixedly connect the copper foil and the flexible circuit board 4 and ensure the conductive connection of the copper foil and the flexible circuit board, electromagnetic shielding metal glue is also arranged on the copper foil in the area corresponding to the opening area 7 and the shielding layer 3, and the electromagnetic shielding metal glue is used for conducting and connecting the copper foil and the conductive circuit; the electromagnetic shielding metal adhesive layer in this embodiment is a copper foil conductive adhesive layer, and particularly relates to a double-conductive copper foil adhesive tape, wherein the copper foil conductive adhesive tape connects a copper foil and a conductive circuit. The copper foil conductive adhesive tape can be used for electromagnetic shielding, namely, the electric signal shielding and the magnetic signal shielding are included, the electric signal shielding mainly depends on the excellent conductivity of copper, the magnetic shielding needs a conductive substance nickel on the adhesive surface of the copper foil adhesive tape to achieve the effect of magnetic shielding, one surface of the double-conductive copper foil adhesive tape is a copper foil, and the other surface of the double-conductive copper foil adhesive tape is coated with conductive acrylic adhesive, so that both surfaces of the double-conductive copper foil adhesive tape have conductivity; the double-conductive copper foil adhesive tape can realize conductivity and shield electromagnetic interference. Because the temperature resistance of the copper foil conductive adhesive is superior to that of an ACF bonding adhesive and is not easy to be decomposed by heat, the separation failure of the flexible circuit board and the shielding layer caused by the ACF bonding adhesive which is dissolved by heat is avoided.
The manufacturing process of the touch screen of the embodiment is as follows:
(1) forming a circuit of an ITO touch layer on one surface of a substrate 1, and forming an ITO shielding layer on the whole surface of the back surface of the substrate 1;
(2) opening an opening area on the flexible circuit board 4 to expose a copper wire communicated with the ground wire area 6 in the opening area;
(3) the flexible circuit board 4 is bonded to the ITO touch layer 2 through ACF conductive adhesive;
(4) and (3) attaching a copper foil conductive adhesive tape to the area corresponding to the opening area 7 and the shielding layer 3 on the copper foil, attaching the copper foil conductive adhesive tape at one end of the copper foil to a conductive circuit of the opening area 7 of the flexible circuit board 4, and attaching the copper foil conductive adhesive tape at the other end of the copper foil to the ITO shielding layer.
Of course, in the process of manufacturing the display device at the later stage, the ITO touch layer 2 may be fixedly connected to the panel through the OCA glue layer.
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 can be made without departing from the scope of the invention.
Claims (10)
1. A touch screen, comprising:
a substrate;
the touch layer and the shielding layer are respectively arranged on two opposite side surfaces of the substrate;
the touch layer is electrically connected with a control main board of the host through the flexible circuit board;
and the conductive metal layer is electrically connected with the shielding layer and the grounding area on the flexible circuit board.
2. The touch screen of claim 1, wherein: the flexible circuit board is provided with an opening area, the opening area is provided with a conductive circuit electrically connected with the grounding area, and the conductive metal layer is electrically connected with the conductive circuit.
3. The touch screen of claim 2, wherein: the opening area is arranged on one side of the flexible circuit board close to the shielding layer.
4. The touch screen of claim 2, wherein: the conductive metal layer is a conductive metal foil.
5. The touch screen of claim 4, wherein: the conductive metal layer is a copper foil.
6. The touch screen of claim 5, wherein: the flexible circuit board is connected with the touch layer in a bonding mode.
7. The touch screen of claim 6, wherein: the flexible printed circuit board further comprises an electromagnetic shielding metal adhesive attached to the copper foil, and the electromagnetic shielding metal adhesive is electrically connected with the flexible printed circuit board and the shielding layer respectively.
8. The touch screen of claim 7, wherein: the electromagnetic shielding metal adhesive is a copper foil conductive adhesive tape.
9. A display device characterized by comprising:
a housing;
a display panel disposed on the housing;
the display module is arranged in the shell, the touch screen is electrically connected with the display module, the touch screen is the touch screen as claimed in any one of claims 1 to 8, and the touch layer is fixedly connected with the display panel.
10. A mobile terminal, characterized by comprising:
a housing;
the display panel is covered on the shell;
the control device is arranged in the shell;
the touch screen of any one of claims 1-8, wherein the touch screen is disposed in the housing and fixedly connected to the display panel, and the touch screen is electrically connected to the control device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920807692.9U CN210199720U (en) | 2019-05-30 | 2019-05-30 | Touch screen, display device and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920807692.9U CN210199720U (en) | 2019-05-30 | 2019-05-30 | Touch screen, display device and mobile terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210199720U true CN210199720U (en) | 2020-03-27 |
Family
ID=69872657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920807692.9U Active CN210199720U (en) | 2019-05-30 | 2019-05-30 | Touch screen, display device and mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210199720U (en) |
-
2019
- 2019-05-30 CN CN201920807692.9U patent/CN210199720U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208172458U (en) | display device and flexible circuit board | |
| US9084368B2 (en) | Single FPC board for connecting multiple modules and touch sensitive display module using the same | |
| US8279198B2 (en) | Resistive touch panel | |
| CN101763186B (en) | Touch control panel | |
| US9367155B2 (en) | Touch panel assembly and electronic device | |
| US20170083153A1 (en) | Touch panel with antenna structure | |
| CN103984452A (en) | Touch panel assembly and electronic apparatus | |
| EP3920671B1 (en) | Flexible circuit board and manufacturing method, display device, circuit board structure and display panel thereof | |
| US11589461B2 (en) | Flexible printed circuit and manufacturing method thereof, electronic device module and electronic device | |
| CN106843606A (en) | Touch sensing, contact panel and electronic equipment | |
| CN210123550U (en) | Touch display module and touch display device | |
| WO2020156595A9 (en) | Flexible circuit board and manufacturing method, display device, circuit board structure and display panel thereof | |
| CN210199720U (en) | Touch screen, display device and mobile terminal | |
| CN113711700A (en) | Flexible printed circuit board | |
| CN204360348U (en) | Contact panel | |
| CN106843611A (en) | Conducting film and touch-screen | |
| CN105867538B (en) | Electronic equipment | |
| CN210007990U (en) | electric connection structure and electronic equipment | |
| CN111538439A (en) | Touch substrate and display device | |
| CN215499741U (en) | Circuit board and display device | |
| CN213241112U (en) | Touch panel and electronic equipment | |
| CN216527110U (en) | Electromagnetic capacitive touch screen | |
| CN210573698U (en) | Electronic equipment with touch screen | |
| CN109002210B (en) | Touch screen and electronic equipment | |
| CN211349320U (en) | Electronic equipment with touch screen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 215300, 188, Feng Feng Road, hi tech Zone, Kunshan, Jiangsu, Suzhou Patentee after: Suzhou Qingyue Photoelectric Technology Co., Ltd Address before: 215300, 188, Feng Feng Road, hi tech Zone, Kunshan, Jiangsu, Suzhou Patentee before: Kunshan Visionox Technology Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |