CN110489017B - Touch screen, touch display screen and intelligent terminal - Google Patents
Touch screen, touch display screen and intelligent terminal Download PDFInfo
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- CN110489017B CN110489017B CN201910923485.4A CN201910923485A CN110489017B CN 110489017 B CN110489017 B CN 110489017B CN 201910923485 A CN201910923485 A CN 201910923485A CN 110489017 B CN110489017 B CN 110489017B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
Abstract
The invention relates to a touch screen, a touch display screen and an intelligent terminal, wherein the touch screen comprises a substrate, a conductive layer, an insulating adhesive layer and a protective film layer, the substrate is provided with a touch area and a non-touch area arranged around the touch area, the non-touch area comprises a first area and a second area, and the distance from one side of the first area departing from the touch area to the edge of the touch area is greater than the distance from one side of the second area departing from the touch area to the edge of the touch area; the conductive layer comprises a touch pattern and a lead pattern, the touch pattern is arranged in the touch area, the lead pattern is arranged in the first area, and the lead pattern is electrically connected with the touch pattern; the insulating glue layer is arranged in the first area and covers the lead pattern; the protective film layer comprises a main body layer and a sealing layer, the main body layer is connected with the insulating glue layer and covers the non-touch area and the touch area, and the sealing layer is arranged between the main body layer and the second area. The touch screen can avoid the risk that the corrosive gas diffuses from the second area to the touch area to corrode the touch pattern, and the service life of the touch screen is prolonged.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a touch screen, a touch display screen and an intelligent terminal.
Background
Touch screens of smart terminals such as mobile phones and tablet computers in related technologies include a substrate, a touch pattern and a lead pattern, the substrate has a touch area and a non-touch area located at the periphery of the touch area, the touch pattern is formed in the touch area, the lead pattern is formed in the non-touch area, and the lead pattern is electrically connected with the touch pattern to receive and transmit a touch signal from the touch area, so that a touch function of the touch area is realized.
In the using process, the lead pattern in the non-touch area is easily corroded in a high-temperature and high-humidity environment, which affects the electrical connection performance between the lead pattern and the touch pattern, and further causes the touch area not to realize the touch function. Based on this, the related art adopts a layer of insulating glue layer that covers the lead wire pattern to the net seal in non-touch area to paste a layer of protection film on the side of insulating glue layer that deviates from the base plate, so as to avoid the risk that the lead wire pattern is corroded. However, the surface of the insulating layer has poor flatness and many depressions (especially, the insulating layer is screen-printed on the non-touch area by a screen printing process), when the protective film is attached to the insulating layer, the depressions are prone to accumulate corrosive gas, and the corrosive gas is prone to diffuse from the side of the touch area close to the edge of the substrate toward the touch area, so as to corrode the touch pattern in the touch area, and the touch area cannot realize the touch function.
Disclosure of Invention
Therefore, it is necessary to provide a touch screen, a touch display screen including the touch screen, and an intelligent terminal including the touch display screen, for solving the problem that corrosive gas easily diffuses from a side of the touch area close to the edge of the substrate toward the touch area and corrodes the touch pattern of the touch area.
A touch screen, comprising:
the touch control device comprises a substrate and a control unit, wherein the substrate is provided with a touch control area and a non-touch control area arranged around the touch control area, the non-touch control area comprises a first area and a second area, and the distance from one side of the first area, which is far away from the touch control area, to the edge of the touch control area is larger than the distance from one side of the second area, which is far away from the touch control area, to the edge of the touch control area;
the conductive layer comprises a touch pattern and a lead pattern, the touch pattern is arranged in the touch area, the lead pattern is arranged in the first area, and the lead pattern is electrically connected with the touch pattern;
the insulating glue layer is arranged in the first area and covers the lead pattern; and
and the protective film layer comprises a main body layer and a sealing layer, the main body layer is connected with the insulating adhesive layer and covers the non-touch area and the touch area, and the sealing layer is arranged between the main body layer and the second area.
In one embodiment, the end of the sealing layer is spaced from the end of the insulating adhesive layer to form a channel communicated with the inner side of the substrate, a plurality of protrusions extend from the end of the insulating adhesive layer, and the plurality of protrusions are arranged in the channel at intervals.
In one embodiment, both ends of the second region extend to the edge of the substrate, and both ends of the first region are connected to the inner side of the second region.
In one embodiment, the substrate is provided with an auxiliary pattern in the channel for reacting with a corrosive gas.
In one embodiment, a portion of the auxiliary pattern is disposed between the protrusion and the substrate, and another portion of the auxiliary pattern is exposed from the protrusion and disposed between the protrusion and the sealing layer, and the portion of the auxiliary pattern exposed from the protrusion is used for reacting with a corrosive gas.
In one embodiment, the length of the portion of the auxiliary pattern exposed to the protrusion is greater than or equal to 0.3 mm.
In one embodiment, the lead pattern includes a driving route and a sensing route, the driving route and the sensing route are disposed on the same side of the substrate; or the driving route and the sensing route are arranged on two opposite sides of the substrate.
In one embodiment, the touch screen is provided with a window penetrating through the protective film layer and the insulating adhesive layer, the driving route and the sensing route are both provided with binding portions, and the binding portions are exposed out of the window.
A touch display screen, comprising:
the touch screen; and
and the display screen is connected with the touch screen.
An intelligent terminal, comprising:
a main board; and
the touch display screen comprises the flexible circuit board, and the flexible circuit board is electrically connected with the mainboard and the lead patterns.
According to the touch screen, the touch display screen and the intelligent terminal provided by the invention, because the distance from the outer side of the first area to the inner side of the first area is greater than the distance from the outer side of the second area to the inner side of the second area, corrosive gas in the second area has a shorter path for diffusing to the touch area, and the corrosive gas in the second area can corrode the touch pattern in the touch area more easily. On this basis, only set up the insulating glue film in the first region and not set up the insulating glue film in the second region, after pasting on the base plate and establish the protection rete, the protection rete can be leveled the laminating with the second region of base plate to can avoid corrosive gas to spread by the second region towards the touch-control district, and then can avoid or reduce the risk that the touch-control pattern in touch-control district is corroded, improve the life of touch-control screen.
Drawings
In order to more clearly illustrate the embodiments of the present application 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, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an intelligent terminal according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of the touch display screen along section line II-II in FIG. 1;
FIG. 3 is a schematic structural diagram of a conductive layer disposed on the substrate in FIG. 2;
FIG. 4 is a schematic view of a structure of an insulation layer disposed in the first region of FIG. 3;
FIG. 5 is a schematic view of the structure of FIG. 4 where a protective film layer is disposed on the insulating layer;
fig. 6 is a partial cross-sectional view of fig. 5 at a.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a touch display screen 10c according to an embodiment of the present invention is applied to an intelligent terminal 10. In one embodiment, the smart terminal 10 includes a terminal body 10a, a main board 10b and a touch display screen 10 c. The main board 10b is disposed inside the terminal body 10a (only a dashed line is shown in fig. 1), and the touch display screen 10c is disposed outside the terminal body 10a and electrically connected to the main board 10 b. The smart terminal 10 may be a smart phone, a notebook computer, a tablet computer, a portable phone, a video phone, a digital still camera, an electronic book reader, a Portable Multimedia Player (PMP), a mobile medical device, a wearable device, or the like.
In one embodiment, referring to fig. 2, the touch display screen 10c includes a touch screen 100 and a display screen 200. Touch-sensitive screen 100 and display screen 200 range upon range of setting, are equipped with conductive layer 120 (also touch-sensitive layer) in the touch-sensitive screen 100, and conductive layer 120 is used for mainboard 10b electric connection in with intelligent terminal 10 to when the user implements the touch on touch-sensitive screen 100, can trigger conductive layer 120 and produce touch signal, and then show the content that touch signal instructed through display screen 200.
It should be noted that the Display 200 may adopt an LCD (Liquid Crystal Display) screen for displaying information, and the LCD screen may be a TFT (Thin Film Transistor) screen, an IPS (In-Plane Switching) screen, or an SLCD (split Liquid Crystal Display) screen. The display 200 may also adopt an OLED (Organic Light-Emitting Diode) screen for displaying information, and the OLED screen may be an AMOLED (Active Matrix Organic Light-Emitting Diode) screen or a Super AMOLED (Super Active Matrix Organic Light-Emitting Diode) screen or a Super AMOLED Plus (Super Active Matrix Organic Light-Emitting Diode) screen.
In an embodiment, referring to fig. 3, the touch screen 100 includes a substrate 110 and a conductive layer 120 formed on the substrate 110. The substrate 110 is a carrier of the conductive layer 120, and the substrate 110 has a touch region 111 and a non-touch region 112 disposed around the periphery of the touch region 111. In one embodiment, the non-touch area 112 includes a first area 112a and a second area 112b, a distance d1 from a side of the first area 112a away from the touch area 111 to an edge of the touch area 111 is greater than a distance d2 from a side of the second area 112b away from the touch area 111 to the edge of the touch area 111, which can also be understood as a distance d1 from an outer side of the first area 112a to an inner side of the first area 112a is greater than a distance d2 from an outer side of the second area 112b to an inner side of the second area 112 b.
In an embodiment, the conductive layer 120 is configured to generate a touch signal in the touch area 111 and output the touch signal to the outside through the non-touch area 112 (for example, the conductive layer 120 is electrically connected to the main board 10b of the smart terminal 10 through the flexible circuit board 150 of the touch display screen 100). The conductive layer 120 includes a touch pattern 121 formed in the touch region 111 and a lead pattern 122 formed in the first region 112a of the non-touch region 112, and the lead pattern 122 is electrically connected to the touch pattern 121. In one embodiment, the lead pattern 122 includes a driving trace 122a and a sensing trace 122b, and the driving trace 122a and the sensing trace 122b are disposed on the same side of the substrate 110. It is understood that in other embodiments, the driving traces 122a and the sensing traces 122b can also be disposed on opposite sides of the substrate 110. In an embodiment, the driving route 122a and the sensing route 122b have a binding portion 1221 (the binding portion 1221 has a gold finger electrically connected to the flexible circuit board 150, and the gold finger has a line interface pattern), and the binding portion 1221 may be electrically connected to the main board 10b through the flexible circuit board 150, so as to implement a touch sensing function of the intelligent terminal 10.
The substrate 110 may be, but is not limited to, any one of a Polycarbonate (PC) panel, a polyethylene terephthalate (PET) panel, and a GLASS (GLASS) panel. The material of the touch pattern 121 includes one or more of the following: indium tin oxide, zinc tin oxide, indium zinc oxide, metal mesh, conductive metal nanowire, carbon nanotube, graphene, or organic transparent conductive material. The material of the lead line pattern 122 includes one or a combination of: metallic silver or metallic copper.
Since the lead line pattern 122 of the non-touch area 112 is easily corroded in a high temperature and high humidity environment, the electrical connection performance between the lead line pattern 122 and the touch pattern 121 is affected, and the touch function of the touch area 111 cannot be realized. Based on this, in the related art, an insulating adhesive layer covering the lead patterns 122 is screen-printed on the non-touch area 112 (including the first area 112a and the second area 112b), and a protective film is attached on a side of the insulating adhesive layer facing away from the substrate 110, so as to avoid a risk of corrosion of the lead patterns 122. However, the surface of the insulating layer has poor flatness and many depressions (especially, the insulating layer is screen-printed on the non-touch area 112 by a screen printing process), and when the protective film is attached to the insulating layer, corrosive gas is easily accumulated in the depressions. Since the distance from the outside of the first region 112a to the inside of the first region 112a is greater than the distance from the outside of the second region 112b to the inside of the second region 112b, the corrosive gas in the second region 112b has a shorter path to diffuse to the touch region 111, and the corrosive gas gathered in the hollow of the second region 112b diffuses more easily toward the touch region 111, so as to corrode the touch pattern 121 in the touch region 111, and the touch region 111 cannot realize its touch function. In order to solve the above problems, the present invention is improved as follows.
In one embodiment, referring to fig. 4 and 5, the touch panel 100 includes an insulating adhesive layer 130 and a protective film layer 140. The insulating adhesive layer 130 is disposed in the first region 112a and covers the lead pattern 122, the insulating adhesive layer 130 can be formed by printing, coating and curing a dense adhesive with a good moisture isolation effect, the insulating adhesive layer 130 can not only insulate and isolate the lead pattern 122, but also isolate moisture, thereby avoiding the risk of corrosion of the lead pattern 122. Referring to fig. 5 and 6, the protective film 140 includes a body layer 141 and a sealing layer 142, the body layer 141 is connected to the insulating adhesive layer 130 and covers the touch region 111 and the non-touch region 112, and the sealing layer 142 is disposed between the body layer 141 and the second region 112 b. In one embodiment, the protective film layer 140 may be a polypropylene layer or a polyethylene terephthalate layer.
In an embodiment, referring to fig. 4 and 5, the touch screen 100 is provided with a window 101 penetrating through the protective film 140 and the insulating adhesive layer 130, and the binding portion 1221 is exposed out of the window 101. The window 101 is provided to reserve an installation space of the flexible circuit board 150, so as to electrically connect the flexible circuit board 150 and the binding portion 1221.
In the touch panel 100, since the insulating adhesive layer 130 is only disposed in the first region 112a and the insulating adhesive layer 130 is not disposed in the second region 112b, after the protective film 140 is attached to the substrate 110, the protective film 140 can be flatly attached to the second region 112b of the substrate 110, so as to prevent corrosive gas from gathering in the hollow portion after the protective film 140 in the second region 112b is attached to the insulating adhesive layer 130, thereby preventing or reducing the risk of corrosion of the touch pattern 121, and improving the service life of the touch panel 100.
Due to the mounting error, it is difficult to avoid a gap between the end of the sealing layer 142 and the end of the insulating adhesive layer 130, and there is a risk that the external corrosive gas enters the inner side of the substrate 110 from the gap to corrode the touch pattern 121. In one embodiment, referring to fig. 6, the end of the sealing layer 142 is spaced apart from the end of the insulating glue layer 130 and forms a channel 111 communicating with the inside of the substrate 110. As shown in fig. 4 and 6, a plurality of protrusions 131 extend from the end of the insulating adhesive layer 130, the protrusions 131 are integrally formed with the insulating adhesive layer 130, and the plurality of protrusions 131 are disposed in the channel 111 at intervals. It is noted that, in the description of the present application, unless specifically defined otherwise, "a plurality" means at least two, such as two, three, and more, and the like.
In the touch panel 100, the plurality of protrusions 131 are disposed in the channel 111 at intervals, so that a path of an external corrosive gas entering the substrate 110 is extended, and the touch pattern 121 on the inner side of the substrate 110 is not easily corroded. In one embodiment, referring to fig. 3, both ends of the second region 112b extend to the edge of the substrate 110, and both ends of the first region 112a are connected to the inner side of the second region 112 b. With this arrangement, the depth of the channel 111 can be further extended, the depth of the channel 111 is close to the distance d1 from the outer side to the inner side of the first region 112a, and the path of the external corrosive gas entering the inner side of the substrate 110 from the channel 111 can be extended.
In one embodiment, the substrate 110 is provided with an auxiliary pattern 112 located in the channel 111, and the material of the auxiliary pattern 112 includes one or more of the following: metallic silver or metallic copper. The auxiliary pattern 112 can be used to react with a corrosive gas (e.g., hydrogen sulfide, which causes sulfidation corrosion), and the auxiliary pattern 112 can serve as a sacrificial member to reduce or delay the corrosive gas entering from the channel 111 to the inner side of the substrate 110, thereby prolonging the service life of the touch screen 100. In an embodiment, a portion of the auxiliary pattern 112 is disposed between the protrusion 131 and the substrate 110, and another portion of the auxiliary pattern 112 is exposed from the protrusion 131 and disposed between the protrusion 131 and the sealing layer 142, and the portion of the auxiliary pattern 112 exposed from the protrusion 131 can be used for reacting with the corrosive gas. In one embodiment, the length of the portion of the auxiliary pattern 112 exposed to the protrusion 131 is greater than or equal to 0.3 mm.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A touch screen, comprising:
the substrate is provided with a touch area and a non-touch area arranged around the touch area, the non-touch area comprises a first area and a second area, and the distance from one side of the first area, which is far away from the touch area, to the edge of the touch area is greater than the distance from one side of the second area, which is far away from the touch area, to the edge of the touch area;
the conductive layer comprises a touch pattern and a lead pattern, the touch pattern is arranged in the touch area, the lead pattern is arranged in the first area, and the lead pattern is electrically connected with the touch pattern;
the insulating glue layer is arranged in the first area and covers the lead pattern; and
the protective film layer is arranged on one side, deviating from the substrate, of the insulating adhesive layer and comprises a main body layer and a sealing layer, the main body layer is connected with the insulating adhesive layer and covers the non-touch area and the touch area, and the sealing layer is arranged between the main body layer and the second area.
2. The touch screen of claim 1, wherein the end of the sealing layer is spaced from the end of the insulating adhesive layer to form a channel communicating with the inner side of the substrate, the end of the insulating adhesive layer extends to form a plurality of protrusions, and the plurality of protrusions are spaced in the channel.
3. The touch screen of claim 2, wherein two ends of the second region extend to the edge of the substrate, and two ends of the first region are connected to the inner side of the second region.
4. Touch screen according to claim 2, characterised in that the substrate is provided with an auxiliary pattern in the channels for reaction with corrosive gases.
5. The touch screen of claim 4, wherein a portion of the auxiliary pattern is disposed between the protrusion and the substrate, and another portion of the auxiliary pattern is exposed from the protrusion and disposed between the protrusion and the sealing layer, and the portion of the auxiliary pattern exposed from the protrusion is used for reacting with a corrosive gas.
6. The touch screen of claim 5, wherein the length of the portion of the auxiliary pattern exposed to the protrusion is greater than or equal to 0.3 mm.
7. The touch screen of claim 1, wherein the lead pattern comprises a driving trace and a sensing trace, the driving trace and the sensing trace being disposed on a same side of the substrate; or the driving route and the sensing route are arranged on two opposite sides of the substrate.
8. The touch screen of claim 7, wherein the touch screen has a window penetrating through the protective film and the insulating adhesive layer, the driving path and the sensing path both have a binding portion, and the binding portion is exposed from the window.
9. A touch display screen, comprising:
the touch screen of any one of claims 1-8; and
and the display screen is connected with the touch screen.
10. An intelligent terminal, comprising:
a main board; and
the touch display screen of claim 9, comprising a flexible circuit board electrically connected to the motherboard and the lead pattern.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910923485.4A CN110489017B (en) | 2019-09-27 | 2019-09-27 | Touch screen, touch display screen and intelligent terminal |
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| CN201910923485.4A CN110489017B (en) | 2019-09-27 | 2019-09-27 | Touch screen, touch display screen and intelligent terminal |
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| CN110489017A CN110489017A (en) | 2019-11-22 |
| CN110489017B true CN110489017B (en) | 2022-08-30 |
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| CN112416163B (en) * | 2020-10-26 | 2024-01-26 | 京东方科技集团股份有限公司 | Display panel, touch substrate and preparation method of touch substrate |
| CN112328110B (en) * | 2020-10-30 | 2024-02-09 | 江西卓讯微电子有限公司 | Touch component, touch screen and electronic equipment |
| CN112363640A (en) * | 2020-11-12 | 2021-02-12 | 业成科技（成都）有限公司 | Touch sensing module and method for forming the same |
| CN112346600A (en) * | 2020-12-03 | 2021-02-09 | 业成科技（成都）有限公司 | Touch structure and device with same |
| CN112462976A (en) * | 2020-12-09 | 2021-03-09 | 业成光电(无锡)有限公司 | Touch control film and manufacturing method thereof |
| CN112732123A (en) * | 2021-02-26 | 2021-04-30 | 业成科技（成都）有限公司 | Touch panel and touch display device using same |
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| CN203276226U (en) * | 2013-05-19 | 2013-11-06 | 祥达光学（厦门）有限公司 | Touch control sensing device |
| CN104516567A (en) * | 2013-09-29 | 2015-04-15 | 宝宸（厦门）光学科技有限公司 | Touch panel and manufacturing method thereof |
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| CN109920828A (en) * | 2019-03-21 | 2019-06-21 | 京东方科技集团股份有限公司 | A kind of oled substrate and preparation method thereof |
| CN110061043A (en) * | 2019-04-30 | 2019-07-26 | 武汉天马微电子有限公司 | A kind of display device and preparation method thereof |
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| CN110489017A (en) | 2019-11-22 |
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