CN215068188U

CN215068188U - High-temperature-resistant and anti-warping plastic cover plate touch screen

Info

Publication number: CN215068188U
Application number: CN202022766991.8U
Authority: CN
Inventors: 李建军
Original assignee: Mutto Optronics Corp
Current assignee: Mutto Optronics Corp
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-12-07
Anticipated expiration: 2030-11-26

Abstract

The utility model discloses a plastic cover plate touch-sensitive screen of perk is prevented to high temperature resistant, including first plastic cover plate and liquid crystal display module assembly, first plastic cover plate with be equipped with first binder, first electric capacity response layer and second binder between the liquid crystal display module assembly in proper order, all coating around the outside of first binder, first electric capacity response layer and second binder has PTV to glue. The utility model has the advantages that: the bonding force between the plastic cover plate and the capacitance sensing layer and between the plastic cover plate and the liquid crystal display module is enhanced, the plastic cover plate, the capacitance sensing layer and the liquid crystal display module are prevented from tilting, layering and falling under a high-temperature environment, meanwhile, the bubbles are prevented from occurring by adopting modified binder balance gas, and the cracking problem of the conductive material under high-temperature and high-humidity conditions is avoided by adopting non-ITO as the conductive material.

Description

High-temperature-resistant and anti-warping plastic cover plate touch screen

Technical Field

The utility model relates to a touch-sensitive screen technical field specifically is a plastic cover plate touch-sensitive screen of perk is prevented to high temperature resistant.

Background

With the rapid development of intelligent automobile electronic products, more and more automobile electronics permeate from high-end automobile models to middle-end and low-end, the automobile electronic products can be divided into an automobile electronic control system and a vehicle-mounted electronic device system, an automobile information system, a navigation system, an entertainment system and the like belong to the vehicle-mounted electronic device system, a vehicle-mounted touch screen is gradually replaced by a vehicle-mounted capacitive screen from the beginning,

vehicle-mounted capacitive touch screens are receiving much attention, and mainly include vehicle-mounted navigation, center consoles, images, entertainment and the like. On-vehicle touch-sensitive screen often can regard as the apron with plastics materials such as two-layer composite sheet, three-layer composite sheet, PC board, IML, and the plastics apron has excellent shock resistance, can bump the test through the conventional head of on-vehicle touch-sensitive screen, simultaneously because the relative glass material of plastics apron, the pliability is more excellent, can not break during the hot-bending shaping, easier 3D shaping.

Under the high-temperature condition, the plastic cover plate of the vehicle-mounted touch screen is not consistent with the expansion and contraction rate of glass and a film, so that the plastic cover plate of the vehicle-mounted touch screen is easy to tilt up with the capacitance sensing layer and the liquid crystal display module at high temperature, and poor appearance such as layering, falling and the like is caused; the plastic cover plate is easy to age at high temperature, bubbles sealed between molecular chains are easy to escape to the bonding layer, so that the bonding layer generates bubbles, and meanwhile, the traditional transparent conductive material ITO is easy to crack under a high-temperature high-humidity environment, so that the function is abnormal.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a plastic cover plate touch-sensitive screen of perk is prevented to high temperature resistant to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a plastics apron touch-sensitive screen of perk is prevented to high temperature, includes first plastics apron and liquid crystal display module assembly, first plastics apron with be equipped with first adhesive, first electric capacity response layer and second adhesive between the liquid crystal display module assembly in proper order, it glues all to coat PTV around first adhesive, first electric capacity response layer and the second adhesive outside.

Preferably, the first plastic cover plate is a two-layer composite plate and a three-layer composite plate formed by copolymerizing PC and PMMA, or a planar 2D cover plate, a 2.5D cover plate or a 3D cover plate of an IML formed by injection molding of PC and PMMA.

Preferably, the first capacitance sensing layer is a transparent conductive material of metal mesh, nano silver, graphene and carbon nanotubes, the substrate is a flexible Film substrate of PET, SRF, COP and PC, and the thickness of the first capacitance sensing layer is 0.4mm, 0.5mm, 0.55mm, 0.7mm or 1.1 mm.

Preferably, the first adhesive with the second adhesive is solid optical clear adhesive, liquid organosilicon glue, acrylic acid glue or foam adhesive, solid optical clear adhesive, liquid organosilicon glue, acrylic acid glue thickness are 150um, 175um, 200um or 250um, foam adhesive thickness is 0.05mm-0.6 mm.

Preferably, the liquid crystal display module is a TFT liquid crystal display module, an IPS liquid crystal display module, or a flexible OLED display.

Preferably, the RTV glue is moisture-cured RTV glue, UV-cured acrylic glue or baked and moisture-cured organic silicon gel.

Advantageous effects

The utility model provides a plastic cover plate touch-sensitive screen of perk is prevented to high temperature resistant, reinforcing plastic cover plate and electric capacity response layer and the bonding force between plastic cover plate and the liquid crystal display module, prevent that plastic cover plate and electric capacity response layer and liquid crystal display module group perk, layering, drop under the high temperature environment, adopt the balanced gas of modified binder to prevent that the bubble from taking place simultaneously, adopt non-ITO to avoid conducting material to take place the problem of splitting a crack under high temperature and high humidity as conducting material.

Drawings

FIG. 1 is a cross-sectional structure diagram of a touch screen with a plastic cover plate in the prior art;

fig. 2 is the cross-sectional structure schematic diagram of the plastic cover plate touch screen of the present invention.

Reference numerals

1-a second plastic cover plate, 2-a third adhesive, 3-a second capacitance induction layer, 4-a second adhesive, 5-a liquid crystal display module, 6-a first plastic cover plate, 7-a first adhesive, 8-a first capacitance induction layer and 9-PTV glue.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Examples

As shown in fig. 2, a high temperature resistant and tilt-proof plastic cover plate touch screen comprises a first plastic cover plate 6 and a liquid crystal display module 5, wherein a first adhesive 7, a first capacitance sensing layer 8 and a second adhesive 4 are sequentially arranged between the first plastic cover plate 6 and the liquid crystal display module 5, and PTV glue 9 is coated around the outer sides of the first adhesive 7, the first capacitance sensing layer 8 and the second adhesive 4.

Preferably, the first plastic cover plate 6 is a two-layer composite plate and a three-layer composite plate formed by copolymerizing PC and PMMA, or a planar 2D cover plate, 2.5D cover plate or 3D cover plate of IML formed by injection molding of PC and PMMA.

Preferably, the first capacitance sensing layer 8 is a transparent conductive material of metal mesh, nano silver, graphene and carbon nanotube, and the substrate thereof is a flexible Film substrate of PET, SRF, COP and PC, and the thickness thereof is 0.4mm, 0.5mm, 0.55mm, 0.7mm or 1.1 mm.

Preferably, the first adhesive 7 and the second adhesive 4 are solid optical transparent adhesive, liquid silicone adhesive, acrylic acid adhesive or foam adhesive, the thicknesses of the solid optical transparent adhesive, the liquid silicone adhesive and the acrylic acid adhesive are 150um, 175um, 200um or 250um, and the thickness of the foam adhesive is 0.05mm-0.6 mm.

Preferably, the liquid crystal display module 5 is a TFT liquid crystal display module, an IPS liquid crystal display module, or a flexible OLED display.

Preferably, the RTV glue 9 is a moisture-curable RTV glue, a UV-curable acrylic glue, or a baked and moisture-curable silicone glue.

Before the plastic cover plate is attached to the capacitance induction layer, the plastic cover plate is baked and subjected to plasma treatment, so that the attachment interface of the plastic cover plate has higher surface energy, the attachment of the capacitance induction layer is facilitated, after the touch screen is attached to the liquid crystal display module, a layer of RTV glue is coated on the periphery of the liquid crystal module, the bonding strength between the plastic cover plate and the liquid crystal display module can be further enhanced, the separation of the plastic cover plate and the liquid crystal display module at high temperature is prevented, ITO is replaced by flexible transparent conductive materials such as metal grids, nano silver, graphene and carbon nano tubes, cracking of the conductive layer under the high-temperature high-humidity condition is prevented, the high-temperature resistance and humidity resistance of the capacitance induction layer are enhanced, and the modified binder is adopted, so that air suction and ventilation are balanced, and the gas released at high temperature of the plastic cover plate is prevented from generating bubbles between the binder and the attachment interface.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the content of the present invention within the protection scope of the present invention.

Claims

1. The utility model provides a high temperature resistant plastic cover plate touch-sensitive screen that perk was prevented which characterized in that: including first plastics apron (6) and liquid crystal display module assembly (5), first plastics apron (6) with be equipped with first adhesive (7), first electric capacity response layer (8) and second adhesive (4) between liquid crystal display module assembly (5) in proper order, first adhesive (7), first electric capacity response layer (8) and second adhesive (4) outside all coat around have RTV to glue (9).

2. The high temperature resistant and tilt resistant plastic cover touch screen of claim 1, wherein: the thickness of the base material of the first capacitance induction layer (8) is 0.4mm, 0.5mm, 0.55mm, 0.7mm or 1.1mm respectively.

3. The high temperature resistant and tilt resistant plastic cover touch screen of claim 1, wherein: first adhesive (7) with second adhesive (4) are solid-state optics transparent adhesive, liquid organosilicon glue, acrylic acid glue or bubble celloidin, solid-state optics transparent adhesive, liquid organosilicon glue, acrylic acid glue thickness are 150um, 175um, 200um or 250um, bubble celloidin thickness is 0.05mm-0.6 mm.

4. The high temperature resistant and tilt resistant plastic cover touch screen of claim 1, wherein: the liquid crystal display module (5) is a TFT liquid crystal display module, an IPS liquid crystal display module or a flexible OLED display.

5. The high temperature resistant and tilt resistant plastic cover touch screen of claim 1, wherein: the RTV glue (9) is moisture-cured RTV glue, UV-cured acrylic glue or baked and moisture-cured organic silica gel.