CN214846678U - Grease-proof touch display screen - Google Patents

Abstract

The utility model discloses a grease proofing fat touch-control display screen, glue, dredge oil reservoir and liquid crystal display module including apron, first binder, electric capacity layer, second binder, RTV, apron, first binder, electric capacity layer, second binder and liquid crystal display module from the top down arrange in proper order, the side of first binder, electric capacity layer, second binder, liquid crystal display module is provided with dredges the oil reservoir, and dredges to glue to fill through RTV between oil reservoir and first binder, electric capacity layer, second binder, the liquid crystal display module and bond. The utility model discloses the development of novelty prevents grease touch-control display screen sets up through the side at first binder, electric capacity layer, second binder, liquid crystal display module and dredges the oil reservoir, can prevent that the grease from getting into the OCA interface of laminating entirely and preventing simultaneously that the grease from permeating the molecular chain of laminating entirely OCA, prevents that the OCA of laminating entirely from being corroded, improves touch-control display screen's grease proofing performance, increase of service life.

Description

Grease-proof touch display screen

Technical Field

The utility model relates to a display screen technical field specifically is a grease proofing touch display screen.

Background

Since the touch screen is rapidly developed into a capacitive screen from a resistive screen, the touch screen is widely applied to the fields of smart phones, tablet computers, electronic books, watches, bracelets, vehicles, industrial controls, medical treatment and the like, along with the improvement of living standard and living quality of people, the requirements on the touch screen are higher and higher, the application scenes of the touch display screen are more diversified, the touch display screen consists of the touch screen and a liquid crystal display module, and the touch screen and the liquid crystal display module are generally bonded together by adopting full-bonding OCA (optical clear adhesive) aiming at small-size and medium-size mobile phone products; for oversized products, acrylic glue or organic silicon glue is generally adopted to attach the touch screen and the liquid crystal display module together. There are many tin cylinder holes in cell-phone touch-control display screen, the hole of making a video recording, the IR hole, the flash hole, center and touch-control display screen interface etc. under certain tropical high temperature environment (such as Hainan, Africa), the grease that contains in the human sweat can permeate into through earphone hole and center and touch-control display screen interface, the grease enters inside full laminating OCA through the side interface of full laminating OCA and liquid crystal display module assembly, and permeate to the whole molecular chain structure of full laminating OCA through molecular motion, the grease can corrode full laminating OCA molecular chain, can lead to full laminating OCA molecular chain fracture, degradation, ageing under the long-time erosion, produce circular big bubble, cause the outward appearance bad, influence user experience, as shown in figure 1, the structure of conventional touch-control display screen mainly comprises apron 1, binder 2, electric capacity layer 3, binder 4 and liquid crystal display module assembly 5.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defect among the prior art, the embodiment of the utility model provides a grease proofing fat touch-control display screen aims at preventing that the grease from entering into between full laminating OCA's the molecular chain, prevents that full laminating OCA molecular chain fracture, degradation, ageing to can prevent full laminating OCA gassing, improve touch-control display screen's grease proofing fat performance, increase of service life.

The utility model discloses a: the utility model provides an grease proofing fat touch-control display screen, includes that apron, first binder, electric capacity layer, second binder, RTV glue, dredges oil layer and liquid crystal display module, apron, first binder, electric capacity layer, second binder and liquid crystal display module from the top down arrange in proper order, the side of first binder, electric capacity layer, second binder, liquid crystal display module is provided with dredges the oil layer, and dredges to glue through RTV between oil layer and first binder, electric capacity layer, second binder, the liquid crystal display module and fill the bonding.

Preferably, the cover plate 1 is made of any one of glass, PC, PMMA and PET, or is made of a two-layer composite plate or a three-layer composite plate, and the cover plate (1) is made of any one of plane 2D, 2.5D and 3D.

Preferably, the first adhesive is a solid optical transparent adhesive, or a liquid silicone glue or an acrylic glue.

Preferably, the capacitor layer 3 includes a capacitor sensing layer and a capacitor driving layer, the capacitor sensing layer and the capacitor driving layer are formed by edge routing and an in-plane pattern, a conductive material of the capacitor layer is a flexible material or a non-flexible material, the flexible material is a metal mesh, nano silver, graphene or a carbon nanotube, the non-flexible material is indium tin oxide, a substrate of the capacitor layer is a flexible material or a hard material, the flexible material is PET, COP, PI or SRF, and the hard material is glass.

Preferably, the liquid crystal display module adopts any one of a TFT liquid crystal display module, a PS liquid crystal display module and a flexible OLED display.

Preferably, the oil-repellent layer is formed by plating an oil-repellent layer on the surface of the RTV glue by evaporation or wet coating.

Preferably, the RTV glue 7 is moisture-cured RTV glue, or UV-cured acrylic glue, or baked and moisture-cured silicone, and after the touch screen and the display screen are attached, a gap exists, and a ring of RTV glue is coated on the periphery of the gap.

The utility model has the advantages as follows: the utility model discloses the development of novelty prevents grease touch-control display screen sets up through the side at first binder, electric capacity layer, second binder, liquid crystal display module and dredges the oil reservoir, can prevent that the grease from getting into the OCA interface of laminating entirely and preventing simultaneously that the grease from permeating the molecular chain of laminating entirely OCA, prevents that the OCA of laminating entirely from being corroded, improves touch-control display screen's grease proofing performance, increase of service life.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

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, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without creative efforts.

FIG. 1 is a schematic structural diagram of a conventional touch display screen;

fig. 2 is a schematic structural diagram of the grease-proof touch display screen of the present invention;

FIG. 3 is a schematic diagram of a conventional touch display screen in which the adhesive is eroded by grease;

fig. 4 is a schematic diagram of the adhesive of the grease-proof touch display screen according to the present invention for preventing grease erosion;

fig. 5 is the grease proofing schematic diagram of the grease proofing touch display screen of the utility model.

Reference numerals of the above figures: apron 1, first binder 2, electric capacity layer 3, conventional touch-control display screen's binder 4, liquid crystal display module 5, second binder 6, RTV glues 7, oleophobic layer 8, grease 9.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

Referring to fig. 2, a grease proofing touch display screen that fatliquises, glue 7, the oil layer of loosing 8, liquid crystal display module 5 including apron 1, first binder 2, electric capacity layer 3, second binder 6, RTV and constitute, apron 1, first binder 2, electric capacity layer 3, second binder 6 and liquid crystal display module 5 from the top down arrange its characterized in that in proper order: the side of first binder 2, electric capacity layer 3, second binder 6, liquid crystal display module 5 is provided with and dredges oil layer 8, and dredges oil layer 8 and fills the bonding through RTV glue 7 between 2, electric capacity layer 3, second binder 6, the liquid crystal display module 5 with first binder.

Further, the cover plate 1 is made of any one of glass, PC, PMMA and PET, can be a two-layer composite plate and a three-layer composite plate which are formed by copolymerizing PC and PMMA, can also be an IML formed by injection molding of PC and PMMA, and the cover plate 1 is made of any one of plane 2D, 2.5D and 3D.

Further, the first adhesive 2 is a solid optical transparent adhesive, or a liquid silicone glue or an acrylic glue.

Furthermore, the capacitance layer 3 includes a capacitance sensing layer and a capacitance driving layer formed by edge routing and an in-plane pattern, the conductive material of the capacitance layer can be flexible materials such as metal mesh, nano silver, graphene and carbon nanotube, and can also be non-flexible materials such as indium tin oxide, and the substrate of the capacitance layer can be flexible materials such as PET, COP, PI, SRF, and can also be hard materials such as Glass.

Further, referring to fig. 3, the second adhesive 6 and the adhesive 4 of the conventional touch display screen are both solid optical transparent adhesives, the adhesive 4 of the conventional touch display screen is eroded by grease 9, the distance between the molecular chains of the OCA of the adhesive 4 of the conventional touch display screen is large and not very tight, when the grease enters the touch screen from the earpiece or the middle frame and the touch screen interface, the grease can easily permeate into the molecular chains of the OCA through molecular motion, gradually erodes the OCA, the OCA continuously absorbs the grease, so that the OCA continuously expands and the thickness increases, when the OCA absorbs the grease to a certain degree, the molecular chains of the OCA are slowly degraded by the grease, the OCA is slowly dissolved, the overall thickness of the OCA in the region becomes thinner, and the thickness increases from expansion to degradation, so that the OCA forms a step difference, and particularly, the step difference of the OCA in places with serious erosion and slight erosion is larger, the presence of a step can lead to bubble generation.

Further, referring to fig. 4, the second adhesive 6 adjusts the ratio of resin type to resin during the synthesis of the OCA on the basis of the adhesive 4 of the conventional touch display screen, so that the distance between the molecular chains of the OCA is very small, the molecular chains are very tight, and after more grease enters the interior of the fully-attached OCA from the receiver or the interface between the middle frame and the touch screen, because the molecular chains of the second adhesive 6 are very tight, the speed of the grease penetrating into the molecular chains of the OCA can be reduced, and the speeds of OCA expansion and OCA degradation can be reduced at the same time, the time of the OCA eroded by the grease can be prolonged, and the grease discharge performance of the OCA can be improved. After less grease enters the fully-attached OCA from the receiver or the interface between the middle frame and the touch screen, the tight molecular chain of the second adhesive 6 has the ability to prevent less grease from entering the OCA molecular chain, so that the speed of OCA expansion and OCA degradation is no longer slowed down, the erosion of the grease on the OCA is thoroughly prevented, and the grease blocking effect is thoroughly achieved.

Furthermore, the liquid crystal display module 5 adopts any one of a TFT liquid crystal display module, an IPS liquid crystal display module, and a flexible OLED display.

Further, the oil-repellent layer 8 is formed by plating an oil-repellent layer on the surface of the RTV glue 7 in an evaporation or wet coating mode, the main component is fluoride containing Si-F chemical bonds, and the grease is removed from the RTV glue 7, so that the grease cannot be gathered on the surface of the RTV glue 7, the possibility that the grease penetrates into the RTV glue to enter the surface of the OCA fully laminated with the second binder 6 is reduced, 50% of the grease is effectively prevented from entering the RTV glue, and the grease-proof performance of the touch display screen is improved.

Further, RTV glues 7 and adopts moisture solidification's RTV to glue, also can adopt UV solidification's acrylic acid glue, can also adopt the organic silica gel who toasts + moisture solidification, because the second binder 6 is generally all than the little and thickness ratio of the size of touch-control screen and display screen thick, touch-sensitive screen and display screen laminating back, can have a breach, the grease can long-term direct contact second binder 6, lead to in most grease gets into the 6 full lamination OCA of second binder, scribble round RTV glue in the peripheral department of this breach, can prevent effectively that 30% grease from getting into in the 6 full lamination OCA of second binder, play the effect of grease proofing.

The working principle is as follows: referring to fig. 5, in a high-temperature tropical environment, after grease 9 contained in human sweat enters a touch display screen from an earphone or a middle frame and a touch screen interface, the grease firstly contacts an oleophobic layer 8, and 50% of the grease 9 is blocked outside by the oleophobic layer 8 due to the oleophobic property of the oleophobic layer; the residual 50% of grease 9 is blocked by 30% under the action of the sealing property of the RTV glue 7; the residual 20% of grease and grease 9 can enter the second adhesive 6 full-lamination OCA, and the second adhesive 6 has the capability of preventing less grease and grease 9 from entering the OCA molecular chains due to the fact that the molecular chains are dense, so that the speed of OCA expansion and OCA degradation is not slowed down, the erosion of grease to the OCA is thoroughly prevented, the effect of grease separation is thoroughly achieved, the overall grease-proof performance of the touch display screen can be improved, and the service life of a product is prolonged.

The present invention has been explained by using specific embodiments, and the explanation of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.

Claims (7)

1. The utility model provides an grease proofing touch-control display screen, includes apron (1), first binder (2), electric capacity layer (3), second binder (6), RTV glue (7), dredges oil layer (8) and liquid crystal display module (5), apron (1), first binder (2), electric capacity layer (3), second binder (6) and liquid crystal display module (5) from the top down arrange its characterized in that in proper order: the side of the first binder (2), the capacitor layer (3), the second binder (6) and the liquid crystal display module (5) is provided with an oil-dispersing layer (8), and the oil-dispersing layer (8) is filled and bonded with the first binder (2), the capacitor layer (3), the second binder (6) and the liquid crystal display module (5) through RTV glue (7).

2. The grease-proof touch display screen according to claim 1, characterized in that: the cover plate (1) is made of any one of glass, PC, PMMA and PET, and the cover plate (1) is made of any one of plane 2D, 2.5D and 3D.

3. The grease-proof touch display screen according to claim 1, characterized in that: the first adhesive (2) adopts a solid optical transparent adhesive, or adopts a liquid organic silicon water adhesive or an acrylic acid water adhesive.

4. The grease-proof touch display screen according to claim 1, characterized in that: the capacitive layer (3) comprises a capacitive sensing layer and a capacitive driving layer, the capacitive sensing layer and the capacitive driving layer are formed by edge routing and in-plane pattern, a conductive material of the capacitive layer is made of a flexible material or a non-flexible material, the flexible material is a metal mesh, nano silver, graphene or carbon nano tubes, the non-flexible material is indium tin oxide, a base material of the capacitive layer is made of a flexible material or a hard material, the flexible material is PET, COP, PI or SRF, and the hard material is glass.

5. The grease-proof touch display screen according to claim 1, characterized in that: the liquid crystal display module (5) adopts any one of a TFT liquid crystal display module, a PS liquid crystal display module and a flexible OLED display.

6. The grease-proof touch display screen according to claim 1, characterized in that: the oil-repellent layer (8) is formed by plating an oil-repellent layer on the surface of the RTV glue (7) in a vapor deposition or wet coating mode.

7. The grease-proof touch display screen according to claim 1, characterized in that: RTV glues (7) and adopts moisture cured RTV to glue, or adopts UV cured acrylic acid glue, or adopts the organic silica gel who toasts + moisture curing, and touch-sensitive screen and display screen laminating back can have a breach, scribbles a round RTV and glues in this breach periphery department.

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