Liquid crystal panel with antistatic film and method for preparing the antistatic film

Abstract

The present invention discloses a liquid crystal panel with an antistatic film, characterized in that it comprises a panel (1) and an antistatic film (2), wherein the antistatic film (2) covers the panel (1), and the antistatic film (2) is a film layer formed by coating a conductive resin material on the panel (1). The antistatic film (2) is prepared by mixing 20% ​​to 40% of ethanol, 40% to 60% of water, 5% to 20% of an active agent, 0.5% to 5% of an adhesive, and 0.1% to 3% of a conductive resin by mass percentage, followed by coating and drying. In addition, the present invention also discloses a method for preparing the antistatic film. The present invention can improve the performance of the antistatic film on the liquid crystal panel.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid crystal panels, and in particular to a liquid crystal panel with an antistatic film and a method for preparing the antistatic film. Background Art

[0002] Mobile electronic devices such as mobile phones, tablet computers and smart wearables have become indispensable in people's lives. Whether these electronic products can work normally in different usage environments is the key to considering the quality of a product. Taking mobile phones as an example, their anti-static ability requirements are relatively high, usually requiring the ability to resist static electricity of 6KV~12KV voltage. The anti-static ability not only reflects the overall structure and circuit design of the machine, but also involves the anti-static ability of each component. The liquid crystal module is the first medium of the mobile phone. It is located at the front end of the mobile phone and is most susceptible to static electricity. In order to combat static electricity, a layer of transparent conductive ITO (indium tin oxide) film is usually made on the outer surface of the liquid crystal panel as an anti-static film. The ITO (indium tin oxide) anti-static film is connected to the ground of the panel with silver paste to conduct, which plays a role in clearing static electricity and protecting the liquid crystal panel from static electricity. Usually, the surface resistance of this layer of ITO (indium tin oxide) anti-static film is 200Ω / cm 2 ~1000Ω / cm 2 .

[0003] With the development of liquid crystal display technology, the integration of touch and display has become the development direction of liquid crystal panels. The so-called integration of touch and display means that the liquid crystal panel integrates the two functions of touch and display. The touch unit is made on the inner side of the liquid crystal panel, and the touch and display share some electrodes. The control chip of touch and display is combined into one. When working, the chip responds to touch and display respectively through the time-sharing scanning technology of the chip, and the two do not interfere with each other. In order to ensure the anti-static ability, the outer surface of the liquid crystal panel needs a layer of anti-static film. The surface resistance of the traditional ITO (indium tin oxide) anti-static film can only reach the kilo-ohm level. After being connected to the ground, it absorbs most of the charge and reduces the change and sensitivity of the capacitance value during touch, thereby affecting the touch effect. Summary of the invention

[0004] The technical problem solved by the present invention is to provide a liquid crystal panel with an antistatic film to improve the performance of the antistatic film, and at the same time provide a method for preparing the antistatic film.

[0005] To solve the above technical problems, the technical solution of the present invention is: A liquid crystal panel with an antistatic film, comprising a panel and an antistatic film, wherein the antistatic film covers the panel and is a film layer formed by coating a conductive resin material on the panel.

[0006] Furthermore, the antistatic film is prepared by mixing 20% ​​to 40% of ethanol, 40% to 60% of water, 5% to 20% of an active agent, 0.5% to 5% of an adhesive and 0.1% to 3% of a conductive resin in terms of mass percentage, followed by coating and drying.

[0007] Furthermore, the antistatic film has a thickness of 20 nm to 80 nm and a surface resistance of 1×107Ω / cm2 to 1×1010Ω / cm2.

[0008] Furthermore, the panel includes an upper substrate glass, a filter, a pixel array, a frame, a lower substrate glass and a liquid crystal material, the filter is located on the inner side of the upper substrate glass, the pixel array is located on the inner side of the lower substrate glass, the frame is arranged around the edge of the space between the upper substrate glass and the lower substrate glass, and the liquid crystal material fills the space between the upper substrate glass and the lower substrate glass.

[0009] Furthermore, a touch unit is also arranged at the location of the pixel array.

[0010] Furthermore, the upper substrate glass and the lower substrate glass are both thinned substrate glasses, and the thickness is between 0.1 mm and 0.4 mm.

[0011] The present invention also discloses a method for preparing an antistatic film on a liquid crystal panel, which is characterized by comprising the following steps:

[0012] S1. Preparation of mixed solution: Prepare the mixed solution in the following proportions by mass percentage:

[0013] Ethanol: 20%~40%;

[0014] Water: 40%~60%;

[0015] Active agent: 5%~20%;

[0016] Adhesive: 0.5%~5%;

[0017] Conductive resin: 0.1%~3%;

[0018] S2, cleaning the LCD panel, treating the surface of the LCD panel until it is clean;

[0019] S3, coating, coating the prepared mixed solution evenly on the surface of the liquid crystal panel;

[0020] S4, drying, the drying temperature is 80℃~130℃, and the drying time is 30min~90min.

[0021] Furthermore, the coating in step S3 is scraping, spraying or spin coating.

[0022] The beneficial effects achieved by the present invention mainly include the following points:

[0023] Conductive resin material is used as the antistatic film. Compared with the traditional ITO material, the surface resistance of the antistatic film can reach 1×107Ω / cm 2 ~1×1010Ω / cm 2 , which does not affect the touch capacitance value and is anti-static; the transmittance of 550nm light is 98%~99.7%, which is higher than that of ITO material, thus reducing energy consumption; the color difference of the displayed color is in the range of -0.003~+0.005, which is also smaller than that of traditional ITO materials.

[0024] The antistatic film is prepared by preparing a mixed solution, and then coating and drying. The method is simple and easy to operate, and the equipment used is also simple and easy to obtain. It can save costs, has high efficiency, and can be mass-produced. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic structural diagram of a liquid crystal panel with an antistatic film in Embodiment 1 of the present invention.

[0026] Explanation of reference numerals: 1- panel, 11- upper substrate glass, 12- filter, 13- pixel array, 14- frame, 15- lower substrate glass, 16- liquid crystal material, 2- antistatic film.

[0027] The drawings are only used for illustrative purposes and should not be construed as limitations on this patent. In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted. The same or similar numbers correspond to the same or similar parts. The terms describing the positional relationship in the drawings are only used for illustrative purposes and should not be construed as limitations on this patent. DETAILED DESCRIPTION

[0028] To facilitate understanding by those skilled in the art, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0029] Embodiment 1

[0030] See also Figure 1 A liquid crystal panel with an antistatic film comprises a panel 1 and an antistatic film 2. The panel 1 is the main body of the liquid crystal panel and plays a display role, and the antistatic film 2 plays an antistatic role. The antistatic film 2 covers the panel 1, and the antistatic film 2 is a film layer formed by coating the panel 1 with a conductive resin material. The conductive resin can be made of a common resin material as a base material, into which a conductive filler material is added, such as a polythiophene conductive polymer.

[0031] The antistatic film 2 is prepared by mixing 20% ​​to 40% of ethanol, 40% to 60% of water, 5% to 20% of an active agent, 0.5% to 5% of an adhesive and 0.1% to 3% of a conductive resin in terms of mass percentage, followed by coating and drying.

[0032] The thickness of the antistatic film 2 is 20nm~80nm, and the surface resistance is 1×107Ω / cm 2 ~1×10 10 Ω / cm 2 The thin antistatic film 2 can make the liquid crystal panel thinner and lighter; the surface resistance is higher than that of traditional ITO, and the antistatic ability is stronger; at the same time, the conductive resin material is used as the antistatic film 2. Compared with the traditional ITO material, the surface resistance of the antistatic film can be 1×10 7 Ω / cm 2 ~1×10 10 Ω / cm 2 It does not affect the touch capacitance value and is anti-static. The transmittance of 550nm light is 98%~99.7%, and the color difference of display is in the range of -0.003~+0.005. These performances are greatly improved compared with traditional ITO materials.

[0033] participate Figure 1 The panel 1 includes an upper glass substrate 11, a filter 12, a pixel array 13, a frame 14, a lower glass substrate 15 and a liquid crystal material 16. The filter 12 is located inside the upper glass substrate 11, the pixel array 13 is located inside the lower glass substrate 15, the frame 14 is arranged around the edge of the space between the upper glass substrate 11 and the lower glass substrate 15, and the liquid crystal material 16 fills the space between the upper glass substrate 11 and the lower glass substrate 15. In addition, a touch unit may be arranged at the position of the pixel array 13, so that the panel 1 can be made into a liquid crystal panel integrating display and touch.

[0034] The upper substrate glass 11 and the lower substrate glass 15 are both thinned substrate glasses, and the thickness is between 0.1 mm and 0.4 mm, which makes the liquid crystal panel more lightweight.

[0035] Embodiment 2

[0036] A method for preparing an antistatic film on a liquid crystal panel, characterized in that it comprises the following steps:

[0037] S1. Preparation of mixed solution: Prepare the mixed solution in the following proportions by mass percentage:

[0038] Ethanol: 20%~40%;

[0039] Water: 40%~60%;

[0040] Surfactant: 5%~20%, such as polyethylene wax, etc.

[0041] Adhesive: 0.5%~5%, such as adhesives based on polyvinyl acetate and polyethyl acrylate;

[0042] Conductive resin: 0.1%~3%, using resin material as the base material, into which conductive filler material is added, such as carbon black doped in epoxy resin;

[0043] S2, cleaning the LCD panel, removing dust and other foreign matter on the surface of the LCD panel until it is clean;

[0044] S3, coating, coating the prepared mixed solution evenly on the surface of the liquid crystal panel, which can be done by scraping, spraying or spin coating;

[0045] S4, drying, through drying to volatilize ethanol, water and other substances, leaving the conductive resin on the liquid crystal panel to form a thin film as an antistatic film; the drying temperature is 80℃~130℃, and the drying time is 30min~90min.

[0046] The antistatic film is prepared by preparing a mixed solution, and then coating and drying. The method is simple and easy to operate, and the equipment used is also simple and easy to obtain. It can save costs, has high efficiency, and can be mass-produced.

[0047] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A liquid crystal panel with an antistatic film, characterized in that: It comprises a panel (1) and an antistatic film (2), wherein the antistatic film (2) covers the panel (1), and the antistatic film (2) is a film layer formed by coating a conductive resin material on the panel (1); The antistatic film (2) is prepared by mixing 20% ​​to 40% of ethanol, 40% to 60% of water, 5% to 20% of an active agent, 0.5% to 5% of an adhesive and 0.1% to 3% of a conductive resin in terms of mass percentage, followed by coating and drying. The active agent is polyethylene wax, and the conductive resin is epoxy resin doped with carbon black; The adhesive is an adhesive mainly composed of polyvinyl acetate and polyethyl acrylate; The antistatic film (2) has a thickness of 20 nm to 80 nm and a surface resistance of 1×10 7 Ω / cm 2 ~1×10 10 Ω / cm 2 .

2. The liquid crystal panel with an antistatic film according to claim 1, characterized in that: The panel (1) comprises an upper substrate glass (11), a filter (12), a pixel array (13), a frame (14), a lower substrate glass (15) and a liquid crystal material (16); the filter (12) is located on the inner side of the upper substrate glass (11); the pixel array (13) is located on the inner side of the lower substrate glass (15); the frame (14) is arranged around the edge of the space between the upper substrate glass (11) and the lower substrate glass (15); and the liquid crystal material (16) fills the space between the upper substrate glass (11) and the lower substrate glass (15).

3. The liquid crystal panel with an antistatic film according to claim 2, characterized in that: A touch control unit is also provided at the location of the pixel array (13).

4. The liquid crystal panel with an antistatic film according to claim 3, characterized in that: The upper substrate glass (11) and the lower substrate glass (15) are both thinned substrate glasses, and the thickness is between 0.1 mm and 0.4 mm.

5. A method for preparing an antistatic film on a liquid crystal panel according to any one of claims 1 to 4, characterized in that: The steps include: S1. Preparation of mixed solution: Prepare the mixed solution in the following proportions by mass percentage: Ethanol: 20%~40%; Water: 40%~60%; Active agent: 5%~20%; Adhesive: 0.5%~5%; Conductive resin: 0.1%~3%; S2, cleaning the LCD panel, treating the surface of the LCD panel until it is clean; S3, coating, coating the prepared mixed solution evenly on the surface of the liquid crystal panel; S4, drying, the drying temperature is 80℃~130℃, and the drying time is 30min~90min.

6. The method for preparing an antistatic film for a liquid crystal panel according to claim 5, characterized in that: The coating in step S3 is blade coating, spray coating or spin coating.

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