WO2019079952A1

WO2019079952A1 - Anti-static touch-control liquid crystal display module and electronic device

Info

Publication number: WO2019079952A1
Application number: PCT/CN2017/107375
Authority: WO
Inventors: 李夏; 黄义宏; 刘俊
Original assignee: 华为技术有限公司
Priority date: 2017-10-23
Filing date: 2017-10-23
Publication date: 2019-05-02
Also published as: CN109964168A

Abstract

An anti-static touch-control liquid crystal display module, comprising multiple physical layers, wherein the multiple physical layers comprise a cover plate (11), optical cement (12), a polarizer (13), touch-control receiving wiring (14) and an iron frame (21), wherein the surface of the cover plate (11) is coated with a fingerprint-resistant coating (10), and one or more electrostatic discharge layers (00) are included between the fingerprint-resistant coating (10) and the touch-control receiving wiring (14). The induced charge of the touch-control receiving wiring (14) can be can effectively reduced or eliminated, thereby effectively reducing or eliminating the poor display phenomenon of an overlapping embedded liquid crystal display module.

Description

Anti-static touch liquid crystal display module and electronic device

Technical field

The present invention relates to the field of liquid crystal display modules, and in particular, to an antistatic liquid crystal display module and an electronic device.

Background technique

The overlapping in-cell touch structure is a common liquid crystal display module applied to smart terminal devices. As shown in FIG. 1 , the overlapping in-cell liquid crystal display module comprises a cover 11 , an optical glue 12 , a front polarizer 13 , a touch receiving line 14 , a color filter layer 15 , a liquid crystal 16 , and a touch emission trace 17 . The thin film transistor layer 18, the rear polarizer 19, the backlight module 20 and the iron frame 21 are formed. The cross-sensing layer traces of the capacitive touch are respectively located on the two sides of the thin film transistor layer 18 and the color filter layer 15, and are embedded in the liquid crystal display module, and thus are called overlapping in-cell liquid crystal display modules. .

Clicking or sliding the surface of the cover is the most common intelligent operation. The fingerprinting of the cover surface is introduced by the manual operation, and the surface of the cover is coated with a hydrophobic fingerprint-resistant coating. Fluorocarbon materials are the lowest surface-resistant coating materials for commercial materials in the industry, and have excellent anti-dirty properties. As shown in Fig. 2, when the surface of the anti-fingerprint coating 10 is peeled off or rubbed against the surface of the fingerprint-resistant coating, the fluorocarbon material is highly prone to static electricity, and since the fluorine has a very small atomic radius, the electronegativity is extremely large, and the fingerprint-resistant coating is applied. The static electricity on the surface of 10 is not easily released, thereby generating an induced charge on the line of the touch receiving trace 14. The induced charge on the touch receiving trace 14 further generates an induced electric field, which additionally drives the liquid crystal molecules to rotate, forming an abnormal display, such as displaying electrostatic horizontal stripes.

Summary of the invention

The embodiment of the invention provides an anti-static touch liquid crystal display module, which comprises a cover plate, an optical glue, a front polarizer, a touch receiving wire and an iron frame, and the cover plate surface is coated with a fingerprint resistant coating. The anti-fingerprint coating and the touch receiving trace comprise one or more layers of electrostatic discharge layer, which eliminates the amount of static electricity transmitted or induced by the anti-fingerprint coating in the state of friction or tear film, effectively slowing or eliminating the touch. The receiving trace line has an induced charge, thereby effectively slowing down or eliminating the poor display phenomenon of the overlapping in-cell liquid crystal display module.

In one possible embodiment, at least one of the one or more layers of electrostatic discharge layers is on the upper surface of the optical glue.

In one possible embodiment, at least one of the one or more layers of electrostatic discharge layers is on the upper surface of the front polarizer.

In one possible embodiment, at least one of the one or more layers of electrostatic discharge layers is on the lower surface of the front polarizer.

In a possible embodiment, the electrostatic discharge layer is a deposited coating or a laminated film.

In a possible embodiment, at least one of the one or more layers of electrostatic discharge layers is at least one of a plurality of physical layers.

In a possible embodiment, at least one of the plurality of physical layers is an optical glue.

In one possible embodiment, the surface resistivity of the electrostatic discharge layer ranges from 1 x 10 ⁵ ohms to 1 x 10 ¹² ohms.

In one possible embodiment, the surface resistivity of the electrostatic discharge layer ranges from 1 x 10 ⁷ ohms to 1 x 10 ¹⁰ ohms.

In a possible embodiment, the electrostatic discharge layer is shorted to the iron frame.

In a possible implementation manner, the electrostatic discharge layer is short-circuited with the iron frame, including: the electrostatic discharge layer is sized to be in direct contact with the iron frame.

In a possible implementation manner, the electrostatic discharge layer is short-circuited with the iron frame, and the electrostatic discharge layer is short-circuited with the iron frame by the wire.

DRAWINGS

1 is a schematic structural view of a touch liquid crystal display module in the prior art;

2 is a schematic diagram of a horizontal stripe of a spot of a touch liquid crystal display module in the prior art;

3A is a schematic structural view of a layer of an electrostatic discharge layer on an upper surface of an optical adhesive according to an embodiment of the present invention;

3B is a schematic structural view of another layer of an electrostatic discharge layer on an upper surface of an optical adhesive according to an embodiment of the present invention;

3C is a schematic structural view of another layer of an electrostatic discharge layer on an upper surface of an optical adhesive according to an embodiment of the present invention;

4A is a schematic structural view of a layer of an electrostatic discharge layer on an upper surface of a front polarizer according to an embodiment of the present invention;

4B is a schematic structural view of another layer of an electrostatic discharge layer on an upper surface of a front polarizer according to an embodiment of the present invention;

4C is a schematic structural view of another layer of an electrostatic discharge layer on an upper surface of a front polarizer according to an embodiment of the present invention;

5A is a schematic structural view of a layer of an electrostatic discharge layer on a lower surface of a front polarizer according to an embodiment of the present invention;

FIG. 5B is a schematic structural diagram of another layer of an electrostatic discharge layer on a lower surface of a front polarizer according to an embodiment of the present invention; FIG.

5C is a schematic structural diagram of another layer of an electrostatic discharge layer on a lower surface of a front polarizer according to an embodiment of the present invention;

6A is a schematic structural diagram of selecting an optical adhesive as a layer of an electrostatic discharge layer according to an embodiment of the present invention;

FIG. 6B is a schematic structural diagram of another optical adhesive selected as an electrostatic discharge layer according to an embodiment of the present invention; FIG.

6C is a schematic structural diagram of another optical adhesive selected as an electrostatic discharge layer according to an embodiment of the present invention;

7A is a schematic structural view of a two-layer electrostatic discharge layer according to an embodiment of the present invention;

FIG. 7B is a schematic structural diagram of another two-layer electrostatic discharge layer according to an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly described below in conjunction with the drawings and embodiments of the embodiments of the present invention.

Embodiments of the present invention provide a liquid crystal display module including a fingerprint resistant coating, a cover plate, an optical adhesive, a front polarizer, a touch receiving trace, a color filter layer, a liquid crystal, and a touch emission trace. , thin film transistor layer, rear polarizer, backlight module and iron frame. Embodiments of the present invention eliminate the amount of static electricity that is transmitted or induced by the anti-fingerprint coating in a rubbed or tear-off state by providing one or more layers of an electrostatic discharge layer between the fingerprint-resistant coating and the touch-receiving trace.

For at least one of the one or more layers of the electrostatic discharge layer, one or more layers of the electrostatic discharge layer may be added between the existing physical layers, or one layer may be selected as an electrostatic discharge layer in the existing physical layer. .

In one embodiment, at least one of the one or more layers of electrostatic discharge layers is on the upper surface of the optical glue.

FIG. 3A is a schematic structural diagram of a liquid crystal display module according to an embodiment of the present invention.

In the example shown in FIG. 3A, the liquid crystal display module further includes an electrostatic discharge layer 00 outside the existing physical layer, and the electrostatic discharge layer 00 is located on the upper surface of the optical adhesive 12. The electrostatic discharge layer 00 may be located on a lower surface of the cap plate 11.

In one example, to further release residual charge, the electrostatic discharge layer is shorted to the iron frame. The iron frame can be an iron frame excellent in electrical conductivity.

Further, in one example, the short-circuiting manner of the electrostatic discharge layer and the iron frame may be a wire connection.

FIG. 3B is a schematic structural diagram of another liquid crystal display module according to an embodiment of the present invention. In the example shown in FIG. 3B, the electrostatic discharge layer 00 is located on the upper surface of the optical adhesive 12, and is short-circuited with the iron frame 21 by a wire to further release residual charges.

In another example, the short-circuiting manner of the electrostatic discharge layer and the iron frame may be to increase the size of the electrostatic discharge layer so as to be directly attached to the iron frame to form a short connection.

FIG. 3C is a schematic structural diagram of another liquid crystal display module according to an embodiment of the present invention. In the example shown in FIG. 3C, the size of the electrostatic discharge layer 00 located on the upper surface of the optical adhesive 12 is increased, so that the electrostatic discharge layer 00 and the iron frame 21 are directly attached and short-circuited, thereby further releasing residual charges.

In one example, the electrostatic discharge layer 00 in Figures 3A-3C is a deposited coating. The deposited coating layer can be formed by various deposition methods such as sputtering, arc evaporation, vapor deposition, and the like. Those skilled in the art can select a suitable deposition method to form a deposited coating layer as an electrostatic discharge layer as needed in the description of the specification.

In another example, the electrostatic discharge layer 00 in Figures 3A-3C can be a conforming film. The bonding film may be a film formed based on a plurality of materials according to various methods, such as a PU film, a TPU film, or the like, and may be attached to a desired surface.

In one example, the surface resistivity of the electrostatic discharge layer 00 in FIGS. 3A-3C may range from 1×10 ⁵ ohm to 1×10 ¹² ohm, wherein the surface resistivity is from 1×10 ⁷ ohm to 1×10 ^{10 .} The electrostatic release layer in the ohm range has a better electrostatic discharge effect.

In another embodiment, at least one of the one or more layers of electrostatic discharge layers is on the upper surface of the front polarizer.

4A is a schematic structural diagram of another liquid crystal display module according to an embodiment of the present invention. In the example shown in FIG. 4A, the liquid crystal display module further includes an electrostatic discharge layer 00 outside the existing physical layer, and the electrostatic discharge layer 00 is located on the upper surface of the front polarizer 13. The electrostatic discharge layer 00 may be located on the lower surface of the optical adhesive 12.

In one example, to further release residual charge, the electrostatic discharge layer is shorted to the iron frame. Wherein, the iron frame can be an iron frame with excellent electrical conductivity.

Further, in one example, the short-circuiting manner of the electrostatic discharge layer and the iron frame may be wire shorting.

FIG. 4B is a schematic structural diagram of another liquid crystal display module according to an embodiment of the present invention. As shown in FIG. 4B, the electrostatic discharge layer 00 is located on the upper surface of the front polarizer 13, and is short-circuited with the iron frame 21 by a wire to further release residual charges.

FIG. 4C is a schematic structural diagram of another liquid crystal display module according to an embodiment of the present invention. As shown in FIG. 4C, the size of the electrostatic discharge layer 00 located on the upper surface of the front polarizer 13 is increased, so that the electrostatic discharge layer 00 is short-circuited with the iron frame 21, thereby further releasing residual charges.

In one example, the electrostatic discharge layer 00 in Figures 4A-4C is a deposited coating. The deposited coating layer can be formed by various deposition methods such as sputtering, arc evaporation, vapor deposition, and the like. Those skilled in the art can select a suitable deposition method to form a deposited coating layer as an electrostatic discharge layer as needed in the description of the specification.

In another example, the electrostatic discharge layer 00 in Figures 4A-4C is a conforming film. The bonding film may be a film formed based on a plurality of materials according to various methods, such as a PU film, a TPU film, or the like, and may be attached to a desired surface.

In one example, the surface resistivity of the electrostatic discharge layer 00 in FIGS. 4A-4C ranges from 1×10 ⁵ ohm to 1×10 ¹² ohm, wherein the surface resistivity is from 1×10 ⁷ ohm to 1×10 ¹⁰ ohm. The electrostatic discharge layer of the range has a better electrostatic discharge effect.

In another embodiment, at least one of the one or more layers of electrostatic discharge layers is on the lower surface of the front polarizer.

FIG. 5A is a schematic structural diagram of another liquid crystal display module according to an embodiment of the present invention. As shown in FIG. 5A, the liquid crystal display module further includes an electrostatic discharge layer 00 outside the existing physical layer, and the electrostatic discharge layer 00 is located on the lower surface of the front polarizer 13. The electrostatic discharge layer 00 can be located on the upper surface of the touch receiving trace 14.

FIG. 5B is a schematic structural diagram of another liquid crystal display module according to an embodiment of the present invention. As shown in FIG. 5B, the electrostatic discharge layer 00 is located on the lower surface of the front polarizer 13, and is short-circuited with the iron frame 21 by a wire to further release residual charges.

FIG. 5C is a schematic structural diagram of another liquid crystal display module according to an embodiment of the present invention. As shown in FIG. 5C, the size of the electrostatic discharge layer 00 located on the lower surface of the front polarizer 13 is increased, so that the electrostatic discharge layer 00 is short-circuited with the iron frame 21, thereby further releasing residual charges.

In one example, the electrostatic discharge layer 00 in Figures 5A-5C is a deposited coating. The deposited coating layer can be formed by various deposition methods such as sputtering, arc evaporation, vapor deposition, and the like. Those skilled in the art can select a suitable deposition method to form a deposited coating layer as an electrostatic discharge layer as needed in the description of the specification.

In another example, the electrostatic discharge layer 00 in Figures 5A-5C is a conforming film. The bonding film may be a film formed based on a plurality of materials according to various methods, such as a PU film, a TPU film, or the like, and may be attached to a desired surface.

In one example, the surface resistivity of the electrostatic discharge layer 00 in FIGS. 5A-5C ranges from 1×10 ⁵ ohm to 1×10 ¹² ohm, wherein the surface resistivity is from 1×10 ⁷ ohm to 1×10 ¹⁰ ohm. The electrostatic discharge layer of the range has a better electrostatic discharge effect.

In one embodiment, at least one of the existing physical layers is selected as the electrostatic discharge layer.

FIG. 6 is a schematic structural diagram of a liquid crystal display module according to an embodiment of the present invention. In the example shown in FIG. 6A, in the existing physical layer, the resistivity of the optical adhesive 12 is adjusted to simultaneously act as an electrostatic discharge layer.

FIG. 6B is a schematic structural diagram of another liquid crystal display module according to an embodiment of the present invention.

In one example, the short-circuit connection between the electrostatic discharge layer and the iron frame may be short-circuiting of the wires. As shown in FIG. 6B, the optical glue acts on the electrostatic discharge layer 12 at the same time, and is short-circuited with the iron frame through a wire to further release the residue. Charge.

FIG. 6C is a schematic structural diagram of another liquid crystal display module according to an embodiment of the present invention.

In one example, the size of the electrostatic discharge layer may be increased to be short-circuited to the iron frame, as shown in FIG. 6C, the size of the electrostatic discharge layer 12 is increased, so that the electrostatic discharge layer 12 is attached to the iron frame 21. Shorted to further release residual charge.

In one example, the surface resistivity of the electrostatic discharge layer 12 in Figures 6A-6C ranges from 1 x 10 ⁵ ohms to 1 x 10 ¹² ohms with a surface resistivity of from 1 x 10 ⁷ ohms to 1 x 10 ¹⁰ ohms. The electrostatic discharge layer of the range has a better electrostatic discharge effect.

In the embodiment shown in FIGS. 6A-6C, by adjusting the resistivity of the existing physical layer, the existing physical layer is directly used as the electrostatic discharge layer, and no additional structure is required.

In another embodiment, multiple layers of electrostatic discharge layers can be provided to further release residual charge.

FIG. 7A is a schematic structural diagram of a liquid crystal display module according to an embodiment of the present invention.

FIG. 7B is a schematic structural diagram of another liquid crystal display module according to an embodiment of the present invention.

In one example, as shown in FIG. 7A, the liquid crystal display module includes two electrostatic discharge layers, wherein the first electrostatic discharge layer 00 is an additional layer outside the existing physical layer, and is located on the lower surface of the front polarizer 13, The second electrostatic discharge layer is realized by the optical glue 12. The first electrostatic discharge layer 00 and the second electrostatic discharge layer 12 are short-circuited with the iron frame by wires, respectively. The first electrostatic discharge layer 00 may be located on the upper surface of the touch receiving trace 14 .

In one example, as shown in FIG. 7B, the liquid crystal display module includes two electrostatic discharge layers, wherein the first electrostatic discharge layer 00 is located on the upper surface of the front polarizer 13, and the second electrostatic discharge layer 01 is located on the upper surface of the optical adhesive 12. The first electrostatic discharge layer 00 and the second electrostatic discharge layer 01 are short-circuited with the iron frame by wires, respectively. The first electrostatic discharge layer 00 may be located on the lower surface of the optical adhesive 12. The second electrostatic discharge layer 01 may be located on a lower surface of the cap plate 11.

The multilayer electrostatic discharge layer may be selected in combination with any one or more of the embodiments as shown in FIGS. 3A-3C, 4A-4C, 5A-5C or 6A-6C to further release residual charge. In the multilayer electrostatic discharge layer, the surface resistivity of the electrostatic discharge layer ranges from 1 × 10 ⁵ ohm to 1 × 10 ¹² ohm, and the surface resistivity is in the range of 1 × 10 ⁷ ohm to 1 × 10 ¹⁰ ohm. Electrostatic discharge is better.

The embodiment of the present invention further provides an electronic device, including the antistatic touch liquid crystal display module of any of the above.

The electronic device can be a mobile phone or a wearable device such as a watch, glasses, or the like.

The specific embodiments of the present invention have been described in detail with reference to the preferred embodiments of the present invention. The scope of the protection, any modifications, equivalent substitutions, improvements, etc., which are made on the basis of the technical solutions of the present invention, are included in the scope of the present invention.

Claims

An anti-static touch liquid crystal display module includes a plurality of physical layers including a cover plate, an optical glue, a front polarizer, a touch receiving wire and an iron frame, and the cover surface is coated Has a fingerprint resistant coating, characterized in that

The anti-fingerprint coating and the touch receiving trace comprise one or more layers of electrostatic discharge layers.
The touch liquid crystal display module of claim 1 , wherein at least one of the one or more electrostatic discharge layers is located on an upper surface of the optical adhesive.
The touch liquid crystal display module of claim 1 , wherein at least one of the one or more electrostatic discharge layers is located on an upper surface of the front polarizer.
The touch liquid crystal display module of claim 1 , wherein at least one of the one or more electrostatic discharge layers is located on a lower surface of the front polarizer.
The touch liquid crystal display module according to any one of claims 2 to 4, wherein the electrostatic discharge layer is a deposition coating or a bonding film.
The touch liquid crystal display module of claim 1 , wherein at least one of the one or more electrostatic discharge layers is at least one of the plurality of physical layers.
The touch liquid crystal display module of claim 6 , wherein at least one of the plurality of physical layers is the optical glue.
The touch liquid crystal display module according to any one of claims 1 to 7, wherein the surface resistivity of the electrostatic discharge layer ranges from 1 × 10 5 ohm to 1 × 10 12 ohm.
The touch liquid crystal display module according to claim 8, wherein the surface resistivity of the electrostatic discharge layer ranges from 1×10 7 ohm to 1×10 10 ohm.
The touch liquid crystal display module according to any one of claims 1 to 9, wherein the electrostatic discharge layer is short-circuited with the iron frame.
The touch-control liquid crystal display module of claim 10, wherein the electrostatic discharge layer is short-circuited with the iron frame, comprising:

The electrostatic discharge layer is sized to be in direct contact with the iron frame.
The touch-control liquid crystal display module of claim 10, wherein the electrostatic discharge layer is short-circuited with the iron frame, comprising:

The electrostatic discharge layer is shorted to the iron frame by a wire.
An electronic device comprising the touch liquid crystal display module according to any one of claims 1-12.
The electronic device of claim 13, wherein the electronic device is a mobile phone or a wearable device.