Novel TFT liquid crystal display screen structure

Abstract

The embodiment of the utility model belongs to the technical field of TFT liquid crystal display screens. The utility model further relates to a novel TFT liquid crystal display screen structure which comprises the TFT large glass substrate, and the polarized light coating layer is plated on the TFT large glass substrate and used for achieving polarized light of the TFT large glass substrate. The polarizing film coating layer is directly plated on the TFT large glass substrate, so that the polarizing film layer can be formed before the TFT large glass substrate is cut, the subsequent step of attaching polarizers one by one is omitted, the production process is greatly simplified, and the production efficiency is improved; the polarizing film coating layer is arranged in a film coating mode, the polarizing film layer formed by film coating is tightly combined with the TFT large glass substrate and is not prone to falling off, and reliability and stability of products are improved. And the step of attaching the polaroid is omitted, so that the client can directly carry out the subsequent process, and the product marketing time is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of TFT liquid crystal display screens, and more specifically, to a novel TFT liquid crystal display screen structure. Background Art

[0002] The main assembly sequence of traditional LCD screens is: first, the TFT LCD mirror is made through the front-end process, and then after the TFT LCD mirror is cleaned and other processes, it flows to the process of attaching the polarizer. The operation steps of attaching the polarizer are: first, tear off the release film covering the (upper / lower) polarizer adhesive side, then align the polarizer and the TFT LCD mirror, and then attach the polarizer to one side of the TFT LCD mirror (upper glass / lower glass); then attach the polarizer on the other side in the same steps; then, use the bubble baking process and other processes to eliminate the bubbles generated during the polarizer bonding process; then carry out IC, FPC and other binding processes;

[0003] This process requires the module factory to slice the LCD screen after it is produced, and attach polarizers to each sliced ​​piece, which not only increases the production steps and costs, but also may lead to low production efficiency and unstable product quality. Therefore, we have improved this and proposed a new TFT LCD screen structure.

[0004] For example, a Chinese patent (publication number CN107491207B) discloses a sealing method for a binding area in an ON-CELL product, comprising: step 1, preparing a TFT upper glass and a TFT lower glass, wherein the width of the TFT lower glass is greater than the width of the TFT upper glass; step 2, attaching a lower polarizer to the lower surface of the TFT lower glass; step 3, cleaning the terminals of the TFT lower glass, binding a driver integrated circuit IC to the upper surface of the TFT lower glass, and the driver integrated circuit IC does not contact the TFT upper glass; step 4, binding a lower glass binding pin to the upper surface of the TFT lower glass, binding a lower glass FPC to the lower glass binding pin, and the driver integrated circuit IC does not contact the lower glass FPC; step 5, cleaning the terminals of the TFT upper glass, binding an upper glass binding pin to the upper surface of the TFT upper glass, binding an upper glass FPC to the upper glass binding pin, and the driver integrated circuit IC does not contact the upper glass FPC; the above patents can prove the defects of the prior art. Utility Model Content

[0005] The technical problem to be solved by the embodiments of the utility model is that in the prior art, polarizers are attached after a large piece of glass is cut, which is costly and inefficient.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A novel TFT liquid crystal display structure comprises: a large TFT glass substrate, on which a polarizing coating layer is coated, and the polarizing coating layer is used to realize polarization of the large TFT glass substrate. In the present application, a polarizing coating layer is directly coated on the large TFT glass substrate, so that a polarizing film layer can be formed before the large TFT glass substrate is cut, thereby eliminating the subsequent steps of attaching polarizers one by one, greatly simplifying the production process and improving production efficiency; the polarizing coating layer is arranged in a coating manner, and the polarizing film layer formed by the coating is tightly combined with the large TFT glass substrate and is not easy to fall off, thereby improving the reliability and stability of the product; since the step of attaching the polarizer is omitted, the client can directly carry out the subsequent process, thereby shortening the time to market of the product.

[0008] As an improvement of the utility model, the large TFT glass substrate is transparent glass; the glass substrate has certain acid and alkali resistance, and can resist acid and alkali corrosion that may be encountered during the production process, thereby maintaining the integrity and stability of the substrate; the glass substrate can be more than 1M in length and width, which is conducive to the manufacture of large-size liquid crystal display screens; the glass substrate has high mechanical strength, can withstand certain pressure and impact, and provide stable support and protection for TFT.

[0009] As an improved manner of the utility model, the polarizing coating layer includes a PVA polarizing layer, and the PVA polarizing layer is plated on one side of the large TFT glass substrate.

[0010] As an improved manner of the utility model, the polarizing coating layer further comprises a protective layer, and the protective layer is coated on a side of the PVA polarizing layer away from the large TFT glass substrate.

[0011] As an improved manner of the utility model, the PVA polarizing layer is made of a material that selectively transmits light in a specific direction to achieve polarization.

[0012] As an improvement of the present invention, the thickness of the PVA polarizing layer is less than 0.3 mm.

[0013] As an improved manner of the utility model, the protective layer is used to protect the PVA polarizing layer.

[0014] As an improved manner of the present invention, the protective layer is one or a combination of two or more of an AG film layer, an AR film layer or an AF film layer.

[0015] As an improved manner of the utility model, an anti-fog film is arranged on the surface of the protective layer on one side away from the PVA polarizing layer, and the anti-fog film is acetate fiber or polyvinyl chloride.

[0016] As an improved manner of the utility model, an antistatic film is arranged on the surface of the protective layer on one side away from the PVA polarizing layer, and the antistatic film is a titanium oxide film or a tin oxide film.

[0017] Compared with the prior art, the embodiments of the present invention mainly have the following beneficial effects:

[0018] In order to solve the problem of high cost and low efficiency in the prior art of attaching polarizers after cutting large pieces of glass, the present application directly coats a polarizing coating layer on a large TFT glass substrate, so that a polarizing film layer can be formed before the large TFT glass substrate is cut, eliminating the subsequent steps of attaching polarizers one by one, greatly simplifying the production process and improving production efficiency; the polarizing coating layer is arranged in a coating manner, and the polarizing film layer formed by the coating is tightly combined with the large TFT glass substrate and is not easy to fall off, thereby improving the reliability and stability of the product; since the step of attaching the polarizer is omitted, the client can directly carry out the subsequent process, shortening the product launch time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of a novel TFT liquid crystal display screen provided in this application;

[0020] Figure 2 A schematic diagram of the structure of a large TFT glass substrate after cutting for a new TFT liquid crystal display structure provided in this application;

[0021] Figure 3 The novel TFT liquid crystal display structure provided in this application Figure 2 A side view schematic diagram of .

[0022] Indicated in the figure:

[0023] 1. Large TFT glass substrate; 2. Polarized coating layer. DETAILED DESCRIPTION

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art to which the present invention belongs; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. Reference to "embodiments" herein means that specific features, structures, or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0025] As described in the background technology, the prior art requires that after the LCD display is produced, the module factory slice it and attach a polarizer to each sliced ​​piece, which not only increases the production steps and costs, but also may lead to low production efficiency and unstable product quality.

[0026] In order to solve this technical problem, the utility model provides a novel TFT liquid crystal display screen structure.

[0027] Specifically, please refer to Figure 1-Figure 3 The new TFT liquid crystal display structure specifically includes:

[0028] The TFT large glass substrate 1 is coated with a polarizing coating layer 2 , and the polarizing coating layer 2 is used to realize polarization of the TFT large glass substrate 1 .

[0029] The novel TFT liquid crystal display screen structure provided by the utility model directly plates a polarizing coating layer 2 on a large TFT glass substrate 1, so that a polarizing film layer can be formed before the large TFT glass substrate 1 is cut, thereby eliminating the subsequent steps of attaching polarizers one by one, greatly simplifying the production process and improving production efficiency; the polarizing coating layer 2 is arranged in a coating manner, and the polarizing film layer formed by the coating is tightly combined with the large TFT glass substrate 1 and is not easy to fall off, thereby improving the reliability and stability of the product; since the step of attaching polarizers is omitted, the client can directly carry out subsequent processes, thereby shortening the time to market for the product.

[0030] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] Embodiment 1 of the utility model of the novel TFT liquid crystal display screen structure

[0034] Please refer to Figure 1-Figure 3The structure of the new TFT liquid crystal display screen of the utility model includes: a large TFT glass substrate 1, a polarizing coating layer 2 is coated on the large TFT glass substrate 1, and the polarizing coating layer 2 is used to realize the polarization of the large TFT glass substrate 1. By directly coating the polarizing coating layer 2 on the large TFT glass substrate 1, a polarizing film layer can be formed before the large TFT glass substrate 1 is cut, thereby eliminating the subsequent steps of attaching polarizers one by one, greatly simplifying the production process and improving the production efficiency; the polarizing coating layer 2 is set in a coating manner, and the polarizing film layer formed by the coating is tightly combined with the large TFT glass substrate 1 and is not easy to fall off, thereby improving the reliability and stability of the product; since the step of attaching polarizers is omitted, the client can directly carry out the subsequent process, thereby shortening the time to market of the product;

[0035] Furthermore, the large TFT glass substrate 1 is transparent glass. The glass substrate has high light transmittance, and the light transmittance efficiency reaches more than 98%, which ensures the light utilization efficiency of the liquid crystal display. The high transparency makes the display effect clearer and the colors more vivid; the glass substrate has excellent heat resistance and can withstand temperatures as high as 350 degrees without deformation; the glass substrate also has certain acid and alkali resistance, and can resist acid and alkali corrosion that may be encountered during the production process, thereby maintaining the integrity and stability of the substrate; the glass substrate can be more than 1M in length and width, which is conducive to the manufacture of large-size liquid crystal displays; the glass substrate has high mechanical strength, can withstand certain pressure and impact, and provide stable support and protection for TFT.

[0036] Specifically, after the large TFT glass substrate 1 is manufactured, the polarizing coating layer 2 is coated on the large TFT glass substrate 1 using a coating process. After the coating is completed, it can be directly shipped to the customer, and the customer will cut it into small pieces to continue the subsequent IC, FPC and other binding processes; or after the coating is completed, it can be directly cut into small pieces and shipped to the customer in the small piece state for direct use by the customer. This kind of product that is directly coated by the supplier for the customer's use will save the customer the time and equipment used in the polarizing film process, greatly improving the customer's product life cycle.

[0037] Furthermore, the polarizing coating layer 2 includes a PVA polarizing layer, and the PVA polarizing layer is coated on one side of the TFT large glass substrate 1

[0038] Furthermore, the polarizing coating layer 2 also includes a protective layer, which is coated on a side of the PVA polarizing layer away from the large TFT glass substrate 1 .

[0039] Furthermore, the PVA polarizing layer is made of a material that selectively transmits light in a specific direction to achieve polarization, that is, it is mainly composed of polyvinyl alcohol PVA and iodine or dichroic dyes. PVA is the main functional film layer that plays a polarizing role. PVA is a linear high molecular polymer with many strongly polar -OH groups evenly hung on its molecular chain. The copolymer has an elongation property and can produce a polarizing effect. Usually, the degree of polymerization of PVA is above 2600, and the best is 3500-5000.

[0040] Embodiment 2 of the new TFT liquid crystal display screen structure of the utility model

[0041] The utility model has a novel TFT liquid crystal display screen structure, and further, the thickness of the PVA polarizing layer is less than 0.3 mm.

[0042] Furthermore, the protective layer is used to protect the PVA polarizing layer from being damaged by external environmental factors such as scratches, moisture, chemicals, etc.

[0043] Furthermore, the protective layer is one or a combination of two or more of an AG film layer, an AR film layer or an AF film layer;

[0044] The main function of the AG film layer is to prevent glare and glare. It reduces reflected light, reduces screen reflection, and increases the viewing angle of the picture, thereby creating a clear visual space. The AG film layer scatters the light shining on it by performing special treatment on the carrier surface, such as surface roughening. The reflected light will not be concentrated at a specific angle because it is shot at various angles, thus achieving an anti-glare effect. Common preparation processes for the AG film layer include glass etching, microparticle addition, and phase separation technology. Among them, the phase separation technology can correspond to screens below 400PPI with almost no flash points, and the transmittance of the film material can be maintained at more than 90%;

[0045] AR film can improve light transmittance and reduce the reflectivity of glass screen to achieve the purpose of anti-reflection; AR film is generally coated by vacuum evaporation coating method or magnetron sputtering coating;

[0046] The AF film layer has the functions of anti-fingerprint, anti-fouling and anti-fingerprint. Based on the lotus leaf principle, it coats a layer of nano-chemical material to minimize the surface tension of the protective layer and reduce the contact area between dust and it.

[0047] Embodiment 3 of the new TFT liquid crystal display screen structure of the utility model

[0048] The utility model has a novel TFT liquid crystal display screen structure in which an anti-fog film is arranged on the surface of the protective layer away from the PVA polarizing layer, and the anti-fog film is made of acetate fiber or polyvinyl chloride;

[0049] Acetate fiber has a special structure and chemical composition, and has the characteristics of both natural and synthetic fibers. After processing, the surface pores are shaped into a permanent anti-fog structure. The D∙CURVE anti-fog CA layer in the acetate fiber anti-fog film is made of triacetate fiber synthesized from cotton seeds and acetic acid solvent. Its structure contains countless nano-scale tiny pores, which can instantly absorb and release the surrounding water vapor, thereby preventing the formation of fog. At the same time, it also has a high penetration rate to ensure visual clarity.

[0050] Polyvinyl chloride is a commonly used agricultural film material with the characteristics of excellent thermal insulation performance and good flexibility. The polyvinyl chloride anti-fog film is made by adding an anti-fog agent to the polyvinyl chloride film formula; the anti-fog agent in the PVC anti-fog film has a surface active effect, which makes the film surface hydrophilic, so that the generated fine water droplets gradually condense into large water droplets on the film surface and flow down along the film, thereby reducing the formation of fog.

[0051] Embodiment 4 of the utility model of the novel TFT liquid crystal display screen structure

[0052] The structure of the new TFT liquid crystal display screen of the utility model is further that an antistatic film is arranged on the surface of the side of the protective layer away from the PVA polarizing layer, and the antistatic film is a titanium oxide film or a tin oxide film;

[0053] Titanium oxide film has good optical and electrical properties, including high refractive index, high transmittance and good conductivity. These properties make titanium oxide film have certain application value in antistatic film layer; through the conductivity of titanium oxide film, static charge can be effectively conducted away from the surface, thereby reducing the risk of static electricity accumulation;

[0054] Tin oxide film is a highly conductive film with good light transmittance in the visible light band, high infrared reflectivity and ultraviolet absorption. Tin oxide film is usually prepared by pyrolytic chemical vapor deposition or reactive magnetron sputtering. The high conductivity of tin oxide film enables it to effectively conduct and disperse static charges, thereby preventing static electricity accumulation.

[0055] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A new TFT liquid crystal display screen structure, characterized in that: include: A large TFT glass substrate (1), wherein a polarizing coating layer (2) is coated on the large TFT glass substrate (1), and the polarizing coating layer (2) is used to achieve polarization of the large TFT glass substrate (1); The polarizing coating layer (2) comprises a PVA polarizing layer, and the PVA polarizing layer is coated on one surface of the large TFT glass substrate (1); The polarizing coating layer (2) further comprises a protective layer, wherein the protective layer is coated on a side of the PVA polarizing layer away from the large TFT glass substrate (1); An anti-fog film is arranged on the surface of the protective layer away from the PVA polarizing layer, and the anti-fog film is made of acetate fiber or polyvinyl chloride; An antistatic film is arranged on the surface of the protective layer away from the PVA polarizing layer. The antistatic film is made of titanium oxide film or tin oxide film.

2. The novel TFT liquid crystal display structure according to claim 1 is characterized in that: The large TFT glass substrate (1) is transparent glass.

3. The novel TFT liquid crystal display structure according to claim 2 is characterized in that: The PVA polarizing layer is made of a material that selectively transmits light in a specific direction to achieve polarization.

4. The novel TFT liquid crystal display structure according to claim 3 is characterized in that: The thickness of the PVA polarizing layer is less than 0.7 mm.

5. The novel TFT liquid crystal display structure according to claim 4 is characterized in that: The protective layer is used to protect the PVA polarizing layer.

6. The novel TFT liquid crystal display structure according to claim 5 is characterized in that: The protective layer is one or a combination of two or more of an AG film layer, an AR film layer or an AF film layer.

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