Thin film transistor (TFT) polarization structure

Abstract

The embodiment of the utility model belongs to the technical field of polarization structures. The utility model further relates to a TFT polarization structure which comprises a TFT module, the two sides of the TFT module are provided with the polaroid bodies, the overall dimension of the polaroid bodies is smaller than that of the TFT module, so that steps are formed between the side edges of the polaroid bodies and the TFT module, the sealing pieces are arranged at the steps, and the sealing pieces are connected with the TFT module. And the sealing element is used for protecting the side of the polaroid main body and sealing the joint of the polaroid main body and the TFT module. By arranging the sealing element, the side edge of the polaroid body can be sealed and protected, the effect of blocking water vapor or other external environment factors is achieved, and then the situation that the polaroid body is affected by the water vapor and fails is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of polarization structures, and more specifically, to a TFT polarization structure. Background Art

[0002] Polarizer is an important component of liquid crystal display products. Its main function is to convert natural light without polarization into polarized light. In liquid crystal display products, polarizer converts natural light generated by backlight into linear polarized light. Ordinary polarizer is made of multi-layer film materials. PVA film is the core component of polarizer. PVA film plays a polarizing role and has the function of emitting linear polarized light for incident natural light. PVA film is easily deformed by ambient temperature and easily affected by water vapor to undergo chemical reaction and change color. TAC film is used to protect and support PVA film. At the same time, many optical properties and functions are also added to TAC film, such as anti-glare, anti-ultraviolet, etc.

[0003] Even though the PVA film has been protected by two layers of TAC film, structurally, the TAC film and PVA film are the same size and their sides are flush, which gives water vapor an opportunity to contact the PVA film. When the PVA film is exposed to water vapor for a long time, they will react chemically, causing the PVA to change color, thus rendering the polarizer ineffective. Therefore, we have improved this and proposed a TFT polarization structure.

[0004] For example, a Chinese patent (publication number CN210136329U) discloses a polarizer and a display having the same. Its specification discloses: Polarizers are widely used in display devices such as displays. In particular, with the rapid development of artificial intelligence in recent years, the application range of displays is getting wider and wider, and the use environment and demand are diversified, which has led to the market's increasingly stringent requirements on the water resistance and high temperature and humidity resistance of polarizers. However, current polarizers, such as Figure 1 As shown in the figure, it is generally composed of a protective film, a TAC (Triacetylcellulose) layer, a PVA (Polyvinyl acetate) layer, a compensation layer, a pressure-sensitive adhesive and a release film. In a high temperature and high humidity environment, water vapor is still very easy to invade, especially the PVA layer that plays a key role in the polarizer is particularly sensitive to high temperature and high humidity. Once water vapor invades, the PVA layer will fail, making the polarizer unable to meet the customer's special reliability requirements. Utility Model Content

[0005] The technical problem to be solved by the embodiments of the present utility model is that a chemical reaction will occur when the PVA film is exposed to water vapor for a long time, causing the PVA to change color, thereby rendering the polarizer ineffective.

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

[0007] A TFT polarization structure includes: a TFT module, wherein polarizer bodies are arranged on both sides of the TFT module, and the outer dimensions of the polarizer bodies are smaller than the outer dimensions of the TFT module, so as to form a step between the side of the polarizer body and the TFT module, and a sealing member is arranged at the step, and the sealing member is used for protecting the side of the polarizer body and sealing the connection between the polarizer body and the TFT module.

[0008] As an improved manner of the utility model, the sealing member is a sealant layer, the sealant layer is coated on the step, and the sealant layer is connected to the outer peripheral side of the polarizer body and the TFT module.

[0009] As an improvement of the utility model, the polarizer body includes a PVA film layer, and TAC film layers are provided on both sides of the PVA film layer, wherein a protective film layer is provided on the side of one TAC film layer away from the PVA film layer, and an adhesive is provided on the side of the other TAC film layer away from the PVA film layer.

[0010] As an improved manner of the utility model, the adhesive is bonded to the TFT module to achieve the connection between the polarizer body and the TFT module.

[0011] As an improved manner of the utility model, a release film layer is bonded to the side of the adhesive away from the PVA film layer to achieve protection for the use of the adhesive.

[0012] As an improved method of the utility model, the TFT module includes a lower glass and an upper glass arranged on one side of the lower glass, and the two polarizer bodies are respectively located on the side of the lower glass and the upper glass away from each other.

[0013] As an improved manner of the present invention, the number of the steps is two, and the two steps are respectively located on the side where the lower glass and the upper glass are away from each other.

[0014] As an improvement of the utility model, a display part is provided at the sealant layer and the step, and the display part is used to display a reminder after water vapor enters.

[0015] As an improved manner of the utility model, the display portion is an ink display coating, and the ink display coating is applied on the step and covered by a sealant layer.

[0016] As an improved method of the utility model, the sealant layer is transparent to achieve the observation of the ink display coating.

[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 in the prior art that the PVA film will undergo a chemical reaction when in contact with water vapor for a long time, causing the PVA to change color and thus causing the polarizer to fail, the present application provides a seal to seal and protect the side of the polarizer body, thereby blocking water vapor or other external environmental factors, thereby reducing the situation where the polarizer body is affected by water vapor and fails. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the structure of the TFT polarization structure provided in this application;

[0020] Figure 2 A schematic diagram of the side view structure of the TFT polarization structure provided in this application;

[0021] Figure 3 A schematic diagram of the stacking structure of the polarizer body of the TFT polarization structure provided in this application;

[0022] Figure 4 Schematic diagram of the ink display coating of the TFT polarization structure provided in this application.

[0023] Indicated in the figure:

[0024] 1. TFT module; 101. Lower glass; 102. Upper glass; 2. Polarizer body; 201. Protective film layer; 202. TAC film layer; 203. PVA film layer; 205. Adhesive; 3. Sealant layer; 4. Ink display coating; 5. Release film layer. DETAILED DESCRIPTION

[0025] 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.

[0026] As described in the background technology, even though the PVA film has been protected by two layers of TAC film, structurally, the TAC film and the PVA film are the same size and their sides are flush, which allows water vapor to contact the PVA film. When the PVA film is in contact with water vapor for a long time, they will undergo a chemical reaction, causing the PVA to change color, thereby rendering the polarizer ineffective.

[0027] In order to solve this technical problem, the utility model provides a TFT polarization structure.

[0028] Specifically, please refer to Figure 1-Figure 2 , the TFT polarization structure specifically includes:

[0029] TFT module 1, polarizer body 2 is arranged on both sides of TFT module 1, the outer dimensions of polarizer body 2 are smaller than the outer dimensions of TFT module 1, so as to form a step between the side of polarizer body 2 and TFT module 1, and a seal is arranged at the step, which is used for protecting the side of polarizer body 2 and sealing the connection between polarizer body 2 and TFT module 1.

[0030] The TFT polarization structure provided by the utility model can seal and protect the side of the polarizer body 2 by setting a seal, thereby blocking water vapor or other external environmental factors, thereby reducing the situation where the polarizer body 2 is affected by water vapor and fails.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] Embodiment 1 of the utility model TFT polarization structure

[0035] Please refer to Figure 1-Figure 2 The utility model TFT polarization structure includes: a TFT module 1, a polarizer body 2 is arranged on both sides of the TFT module 1, the outer dimensions of the polarizer body 2 are smaller than the outer dimensions of the TFT module 1, so as to form a step between the side of the polarizer body 2 and the TFT module 1, and a sealing member is arranged at the step, and the sealing member is used for protecting the side of the polarizer body 2 and sealing the connection between the polarizer body 2 and the TFT module 1. By arranging the sealing member, the side of the polarizer body 2 can be sealed and protected, so as to block water vapor or other external environmental factors, thereby reducing the situation where the polarizer body 2 is affected by water vapor and fails.

[0036] Further, such as Figure 2As shown, the sealing member is a sealant layer 3, which is coated on the step, and the sealant layer 3 is connected to the outer peripheral side of the polarizer body 2 and the TFT module 1. The sealant layer 3 is used to seal and protect the side of the polarizer body 2, thereby blocking water vapor or other external environmental factors, thereby reducing the situation where the polarizer body 2 is affected by water vapor and fails.

[0037] Embodiment 2 of the utility model TFT polarization structure

[0038] Please refer to Figure 1-Figure 2 The utility model TFT polarization structure includes: a TFT module 1, a polarizer body 2 is arranged on both sides of the TFT module 1, the outer dimensions of the polarizer body 2 are smaller than the outer dimensions of the TFT module 1, so as to form a step between the side of the polarizer body 2 and the TFT module 1, and a sealing member is arranged at the step, and the sealing member is used for protecting the side of the polarizer body 2 and sealing the connection between the polarizer body 2 and the TFT module 1. By arranging the sealing member, the side of the polarizer body 2 can be sealed and protected, so as to block water vapor or other external environmental factors, thereby reducing the situation where the polarizer body 2 is affected by water vapor and fails.

[0039] Further, such as Figure 2 As shown, the sealing member is a sealant layer 3, which is coated on the step, and the sealant layer 3 is connected to the outer peripheral side of the polarizer body 2 and the TFT module 1. The sealant layer 3 is used to seal and protect the side of the polarizer body 2, thereby blocking water vapor or other external environmental factors, thereby reducing the situation where the polarizer body 2 is affected by water vapor and fails.

[0040] Further, such as Figure 3 As shown, the polarizer body 2 includes a PVA film layer 203, and TAC film layers 202 are provided on both sides of the PVA film layer 203, wherein a protective film layer 201 is provided on one side of the TAC film layer 202 away from the PVA film layer 203, and an adhesive 205 is provided on another side of the TAC film layer 202 away from the PVA film layer 203;

[0041] PVA film is a high molecular polymer, dyed with iodine or various organic dyes with dichroic properties, and stretched under certain humidity and temperature conditions to make it have polarization properties. After dehydration and drying, it forms the original film of the polarizer, which determines the polarization properties and transmittance of the polarizer, and also affects the color tone and durability of the polarizer. PVA film plays a polarizing role and has a linear polarized light output for natural light incident;

[0042] TAC film is a protective material for fixing PVA film. In addition, many optical properties and functions are also added to the TAC film, such as anti-glare and UV protection. Because PVA film is hydrophilic, it will quickly deform, shrink, relax, and decay in a humid and hot environment. It has very low strength and is brittle and easy to break, making it inconvenient to use and process. Therefore, a layer of TAC film with high strength, high light transmittance and resistance to moisture and heat is compounded on both sides of the film. On the one hand, it plays a protective role, and on the other hand, it can prevent the shrinkage of the PVA film.

[0043] Furthermore, the adhesive 205 is bonded to the TFT module 1 to achieve the connection between the polarizer body 2 and the TFT module 1;

[0044] After the adhesive 205 is pasted together with the lower glass 101 and the upper glass 102, a circle of quick-drying glue with a thickness of less than 0.3 mm is applied around the polarizer body 2 to form a sealant layer 3. The thickness of the glue does not exceed the height of the polarizer, thereby protecting the side of the PVA film layer 203. The reason why the sealant layer 3 is applied after the adhesive 205 is pasted on the lower glass 101 and the upper glass 102 is that after the adhesive 205 is pasted on the lower glass 101 and the upper glass 102, a step will be formed between the polarizer body 2 and the TFT module 1, so that the glue-coating device will also have a reference, and then the glue outlet of the glue-coating device is moved along the bottom of the step. When the glue outlet completes a circle along the step, the side glue sealing operation of the polarizer body 2 is completed; the setting of the sealant layer 3 does not exceed the height of the polarizer body 2, that is, the sealant layer 3 does not contact the protective film layer 201, so that the protective film layer 201 can be torn off later.

[0045] Embodiment 3 of the utility model TFT polarization structure

[0046] Please refer to Figure 1-Figure 2 The utility model TFT polarization structure includes: a TFT module 1, a polarizer body 2 is arranged on both sides of the TFT module 1, the outer dimensions of the polarizer body 2 are smaller than the outer dimensions of the TFT module 1, so as to form a step between the side of the polarizer body 2 and the TFT module 1, and a sealing member is arranged at the step, and the sealing member is used for protecting the side of the polarizer body 2 and sealing the connection between the polarizer body 2 and the TFT module 1. By arranging the sealing member, the side of the polarizer body 2 can be sealed and protected, so as to block water vapor or other external environmental factors, thereby reducing the situation where the polarizer body 2 is affected by water vapor and fails.

[0047] Further, such as Figure 2As shown, the sealing member is a sealant layer 3, which is coated on the step, and the sealant layer 3 is connected to the outer peripheral side of the polarizer body 2 and the TFT module 1. The sealant layer 3 is used to seal and protect the side of the polarizer body 2, thereby blocking water vapor or other external environmental factors, thereby reducing the situation where the polarizer body 2 is affected by water vapor and fails.

[0048] Further, such as Figure 3 As shown, the polarizer body 2 includes a PVA film layer 203, and TAC film layers 202 are provided on both sides of the PVA film layer 203, wherein a protective film layer 201 is provided on one side of the TAC film layer 202 away from the PVA film layer 203, and an adhesive 205 is provided on another side of the TAC film layer 202 away from the PVA film layer 203;

[0049] After the adhesive 205 is pasted together with the lower glass 101 and the upper glass 102, a circle of quick-drying glue with a thickness of less than 0.3 mm is applied around the polarizer body 2 to form a sealant layer 3. The thickness of the glue does not exceed the height of the polarizer, thereby protecting the side of the PVA film layer 203. The reason why the sealant layer 3 is applied after the adhesive 205 is pasted on the lower glass 101 and the upper glass 102 is that after the adhesive 205 is pasted on the lower glass 101 and the upper glass 102, a step will be formed between the polarizer body 2 and the TFT module 1, so that the glue-coating device will also have a reference, and then the glue outlet of the glue-coating device is moved along the bottom of the step. When the glue outlet completes a circle along the step, the side glue sealing operation of the polarizer body 2 is completed; the setting of the sealant layer 3 does not exceed the height of the polarizer body 2, that is, the sealant layer 3 does not contact the protective film layer 201, so that the protective film layer 201 can be torn off later.

[0050] like Figure 3 As shown, a release film layer 5 is bonded to the side of the adhesive 205 away from the PVA film layer 203 to protect the use of the adhesive 205. When the adhesive 205 needs to be adhered to the lower glass 101 or the upper glass 102, the release film layer 5 is torn off first and then adhered. The release film is a special thin film material with distinguishable characteristics on its surface. It has no stickiness or only slight stickiness after contact with specific materials under limited conditions.

[0051] Embodiment 4 of the utility model TFT polarization structure

[0052] The above embodiments are further limited, specifically, Figure 1-Figure 2As shown, the TFT module 1 includes a lower glass 101 and an upper glass 102 arranged on one side of the lower glass 101. The two polarizer bodies 2 are respectively located on the sides of the lower glass 101 and the upper glass 102 that are away from each other. First, the lower glass 101 and the upper glass 102 mainly play the role of clamping the liquid crystal. The front and rear sides of the liquid crystal or the upper and lower layers of glass are not smooth on the side that contacts the liquid crystal, but have jagged grooves. The main purpose of setting this groove is to make the linear liquid crystal molecules arranged along the groove. In this way, the arrangement of the liquid crystal molecules will be neat. If it is a smooth plane, the arrangement of the liquid crystal molecules will be uneven, causing light scattering and forming a light leakage phenomenon.

[0053] Further, such as Figure 1-Figure 2 As shown, there are two steps, which are respectively located on the sides of the lower glass 101 and the upper glass 102 away from each other, so as to facilitate the arrangement of the sealant layer 3 on both sides of the TFT module 1 .

[0054] A display part is provided between the sealant layer 3 and the step, and the display part is used to display a reminder after water vapor enters.

[0055] Furthermore, the display portion is an ink display coating 4 , which is coated on the step and covered by the sealant layer 3 .

[0056] Further, such as Figure 4 As shown, the sealant layer 3 is transparent to enable observation of the ink display coating 4. The sealant layer 3 is made of water-chromic ink. The water-chromic ink is a prior art. The water-chromic ink is a water-based silk screen ink. It is white in itself, becomes transparent when it comes into contact with water, and returns to its original state after drying. Since the water-transparent ink does not contain harmful materials, it has passed the EN71-3 test and is a safe water-based silk screen color-changing ink. By observing the color change of the ink display coating 4, it can be determined whether the seal of the sealant layer 3 has failed.

[0057] Obviously, the embodiments described above are only some embodiments of the utility model, rather than 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 TFT polarization structure, characterized in that: include: A TFT module (1), wherein polarizer bodies (2) are arranged on both sides of the TFT module (1), the outer dimensions of the polarizer body (2) being smaller than the outer dimensions of the TFT module (1), so as to form a step between the side of the polarizer body (2) and the TFT module (1), and a sealing member is arranged at the step, the sealing member being used for protecting the side of the polarizer body (2) and sealing the connection between the polarizer body (2) and the TFT module (1).

2. The TFT polarization structure according to claim 1, characterized in that: The sealing member is a sealing adhesive layer (3), the sealing adhesive layer (3) is coated on the step, and the sealing adhesive layer (3) is connected to the outer peripheral side of the polarizer body (2) and the TFT module (1).

3. The TFT polarization structure according to claim 2, characterized in that: The polarizer body (2) comprises a PVA film layer (203), and TAC film layers (202) are provided on both sides of the PVA film layer (203), wherein a protective film layer (201) is provided on a side of one TAC film layer (202) away from the PVA film layer (203), and an adhesive (205) is provided on a side of the other TAC film layer (202) away from the PVA film layer (203).

4. The TFT polarization structure according to claim 3, characterized in that: The adhesive (205) is bonded to the TFT module (1) to achieve connection between the polarizer body (2) and the TFT module (1).

5. The TFT polarization structure according to claim 3, characterized in that: A release film layer (5) is bonded to the side of the adhesive (205) away from the PVA film layer (203) to achieve protection for the use of the adhesive (205).

6. The TFT polarization structure according to claim 4 or 5, characterized in that: The TFT module (1) comprises a lower glass (101) and an upper glass (102) arranged on one side of the lower glass (101), and the two polarizer bodies (2) are respectively located on the side of the lower glass (101) and the upper glass (102) that are away from each other.

7. The TFT polarization structure according to claim 6, characterized in that: The number of the steps is two, and the two steps are respectively located on the side of the lower glass (101) and the upper glass (102) that are away from each other.

8. The TFT polarization structure according to claim 7, characterized in that: A display portion is provided between the sealant layer (3) and the step, and the display portion is used to display a reminder after water vapor enters.

9. The TFT polarization structure according to claim 8, characterized in that: The display portion is an ink display coating (4), and the ink display coating (4) is applied on the step and covered by the sealant layer (3).

10. The TFT polarization structure according to claim 9, characterized in that: The sealant layer (3) is transparent so as to enable observation of the ink display coating (4).

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