Anti-interference TFT display module

Abstract

The utility model discloses an anti-interference TFT (Thin Film Transistor) display module which comprises a cover plate, an OCA (Optical Clear Adhesive) layer is arranged on the lower surface of the cover plate, an upper polarizing layer is arranged on the lower surface of the OCA layer, a display glass layer is arranged on the lower surface of the upper polarizing layer, a lower polarizer is arranged on the lower surface of the display glass layer, and an anti-interference TFT (Thin Film Transistor) is arranged on the lower surface of the lower polarizer. A backlight layer is arranged on the lower surface of the lower polaroid, the upper polarizing layer comprises an upper polaroid, an ITO (indium tin oxide) impedance film is arranged on the upper surface of the upper polaroid, and polaroid mucilage glue is arranged on the lower surface of the upper polaroid. By means of the ITO impedance film on the upper polaroid, the effect of shielding and protecting the display glass layer can be achieved, the cost pressure and yield loss generated by plating the ITO film on the display glass layer can be reduced, and the cost is effectively reduced.

Description

Technical Field

[0001] The utility model relates to a TFT display module, more specifically, to an anti-interference TFT display module. Background Art

[0002] In TTF glass integrated touch modules, an ITO shielding layer is applied to the top surface of the display glass to protect the touch screen from interference. This ITO shielding layer coating process can cause a certain yield loss on the display glass, impacting cost control.

[0003] Chinese patent document CN206178289U discloses a liquid crystal display module comprising a backlight module and a liquid crystal display screen located on one side of the backlight module. The liquid crystal display screen comprises a TFT substrate, a CF substrate disposed parallel to and opposite the TFT substrate, and a liquid crystal layer located between the TFT and CF substrates. The TFT substrate is disposed opposite the backlight module, a first ITO polarizing film is disposed on the side of the TFT substrate facing away from the liquid crystal layer, and a second ITO polarizing film is disposed on the side of the CF substrate facing away from the liquid crystal layer. The polarization directions of the first and second ITO polarizing films are perpendicular to each other. The first ITO polarizing film is formed on the surface of the TFT substrate by magnetron sputtering, and the second ITO polarizing film is formed on the surface of the CF substrate by magnetron sputtering. The thickness of the first ITO polarizing film is X, and the thickness of the second ITO polarizing film is Y, where: 0.02 mm ≤ X ≤ 0.06 mm, and 0.02 mm ≤ Y ≤ 0.06 mm. The values ​​of X and Y are both 0.05 mm. The TFT substrate also includes a first glass plate with a plurality of pixel units arranged in a matrix, and a first alignment film. The pixel units are provided with pixel electrodes and TFT tubes electrically connected to the pixel electrodes. The first glass plate is connected to the first ITO polarizing film on the side facing away from the liquid crystal layer, and to the first alignment film on the side facing the liquid crystal layer. The CF substrate also includes a second glass plate, a color filter, a common electrode corresponding to the pixel electrodes, and a second alignment film. The second glass plate is connected to the second ITO polarizing film on the side facing away from the liquid crystal layer, and to the color filter on the side facing the liquid crystal layer. The second alignment film is in close contact with the liquid crystal layer, and the common electrode is located between the color filter and the second alignment film. The color filter includes red, green, and blue filter units, each corresponding to the pixel units and arranged alternately. Both the first and second alignment films are polyimide alignment films. The backlight module includes a light guide plate and a reflective sheet disposed on one side of the light guide plate.

[0004] Apparently, in this patent, since a first ITO polarizing film is provided on the side of the TFT substrate away from the liquid crystal layer, and a second ITO polarizing film is provided on the side of the CF substrate away from the liquid crystal layer, the first and second ITO polarizing films replace the traditional resin polarizers, and their thickness is relatively reduced, thereby making the LCD module and terminal device thinner and improving their light transmittance. However, this structure cannot solve the existing display glass loss problem.

[0005] Chinese patent document CN221378450U discloses an integrated TFT display screen, comprising: a TFT display screen comprising an upper polarizer, a color filter, a liquid crystal layer, a TFT pixel layer, a lower polarizer, and a backlight module; an NFC layer is disposed at the bottom of the TFT pixel layer. The color filter is disposed at the bottom of the upper polarizer, and the liquid crystal layer is disposed at the bottom of the color filter. The TFT pixel layer is located at the bottom of the liquid crystal layer, and the NFC layer is disposed at the bottom of the TFT pixel layer by sputtering transparent ITO. The lower polarizer is disposed at the bottom of the TFT pixel layer, and the backlight module is disposed at the bottom of the lower polarizer. The TFT display screen also includes a housing having a central window, a glass cover disposed in the window, and the upper polarizer disposed at the bottom of the glass cover. The shape and size of the front of the color filter are adapted to those of the front of the TFT display screen. The color filter requires strict attention to the ambient temperature during installation. The backlight module is equipped with several fluorescent bulbs, which are equidistantly arranged on the side of the backlight module near the lower polarizer. The shape and size of the front of the lower polarizer match the shape and size of the front of the backlight module. The light source emitted by the backlight module will pass through the lower polarizer and enter the TFT pixel layer. The control chip in the backlight module and the TFT pixel layer are connected together via an FPC. The top surface of the upper polarizer is polished.

[0006] Apparently, this patent completes the antenna circuit by coating the TFT glass with a pattern similar to the NFC antenna routing requirements. Since ITO is a material with electrical conductivity, its conductivity is lower than that of metals such as copper and silver. However, ITO is transparent and does not affect the display effect. Furthermore, it is very thin. Therefore, the NFC antenna routing solution can be integrated into the TFT screen structure, streamlining the module structure, making the product thinner, and reducing its production cost. However, this structure cannot solve the existing display glass loss problem. Utility Model Content

[0007] Based on this, it is necessary to address the above technical issues and provide an anti-interference TFT display module. The anti-interference TFT display module includes a cover plate, an OCA adhesive layer is provided on the lower surface of the cover plate, an upper polarizing layer is provided on the lower surface of the OCA adhesive layer, a display glass layer is provided on the lower surface of the upper polarizing layer, a lower polarizer is provided on the lower surface of the display glass layer, and a backlight layer is provided on the lower surface of the lower polarizer. The upper polarizing layer includes an upper polarizer, an ITO resistive film is provided on the upper surface of the upper polarizer, and polarizer adhesive is provided on the lower surface of the upper polarizer. The ITO resistive film on the upper polarizer can shield and protect the display glass layer, reducing the cost pressure and yield loss caused by plating the ITO film on the display glass layer, effectively reducing costs.

[0008] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0009] An anti-interference TFT display module, characterized in that the anti-interference TFT display module includes a cover plate, an OCA adhesive layer is provided on the lower surface of the cover plate, an upper polarizing layer is provided on the lower surface of the OCA adhesive layer, a display glass layer is provided on the lower surface of the upper polarizing layer, a lower polarizer is provided on the lower surface of the display glass layer, a backlight layer is provided on the lower surface of the lower polarizer, wherein the upper polarizing layer includes an upper polarizer, an ITO impedance film is provided on the upper surface of the upper polarizer, and a polarizer adhesive is provided on the lower surface of the upper polarizer.

[0010] As a preferred embodiment of the anti-interference TFT display module provided by the present invention, the polarizer adhesive is gray.

[0011] As a preferred embodiment of the anti-interference TFT display module provided by the present invention, the upper polarizer and the lower polarizer have the same size.

[0012] As a preferred embodiment of the anti-interference TFT display module provided by the present invention, the extended area of ​​the upper polarizer is smaller than that of the display glass layer.

[0013] As a preferred embodiment of the anti-interference TFT display module provided by the present invention, the thickness of the ITO impedance film is 0.1 mm to 0.3 mm.

[0014] As a preferred embodiment of the anti-interference TFT display module provided by the present invention, the thickness of the ITO impedance film is 0.2 mm.

[0015] As a preferred embodiment of the anti-interference TFT display module provided by the present invention, an extended impedance film is provided on the edge of the ITO impedance film, and the extended impedance film covers the side wall of the upper polarizer.

[0016] As a preferred embodiment of the anti-interference TFT display module provided by the present invention, the thickness of the extended impedance film is smaller than that of the ITO impedance film.

[0017] As a preferred embodiment of the anti-interference TFT display module provided by the present invention, an auxiliary impedance film is provided on the upper surface of the ITO impedance film.

[0018] As a preferred embodiment of the anti-interference TFT display module provided by the present invention, the impedance value of the auxiliary impedance film is smaller than that of the ITO impedance film.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] The utility model provides an anti-interference TFT display module, which utilizes the ITO impedance film on the upper polarizer to shield and protect the display glass layer, thereby reducing the cost pressure and yield loss caused by plating the ITO film on the display glass layer, and effectively reducing costs.

[0021] In addition, an extended impedance film can be provided on the edge of the ITO impedance film, covering the sidewalls of the upper polarizer. The thickness of the extended impedance film is less than that of the ITO impedance film. Utilizing the extended impedance film on the edge of the ITO impedance film can further enhance the shielding protection and improve the bonding strength between the ITO impedance film and the upper polarizer.

[0022] In addition, an auxiliary impedance film can be provided on the upper surface of the ITO impedance film. The impedance value of the auxiliary impedance film is lower than that of the ITO impedance film. The auxiliary impedance film can further improve the anti-interference performance of the ITO impedance film, forming double protection and double shielding. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the solutions in the present invention, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 This is a schematic diagram of the hierarchical structure of the anti-interference TFT display module of the present invention;

[0025] Figure 2for Figure 1 Schematic diagram of the hierarchical structure of the upper polarizing layer of the anti-interference TFT display module;

[0026] Figure 3 This is a schematic diagram of the three-dimensional structure of another embodiment of the anti-interference TFT display module of the present invention;

[0027] Figure 4 This is a schematic diagram of the three-dimensional structure of another embodiment of the anti-interference TFT display module of the present invention;

[0028] The markings in the figure are as follows: 1. Cover plate; 2. OCA adhesive layer; 3. Upper polarizing layer; 31. Upper polarizer; 32. ITO impedance film; 321. Extended impedance film; 33. Polarizer adhesive; 34. Auxiliary impedance film; 4. Display glass layer; 5. Lower polarizer; 6. Backlight layer. DETAILED DESCRIPTION

[0029] In order to help those skilled in the art better understand the present invention, the following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present invention.

[0030] As mentioned in the background, existing TTF glass technology requires an ITO shielding layer on the top surface of the display glass in TTF glass-integrated touchscreen modules. This layer protects the touchscreen from interference. This ITO shielding layer coating process can lead to a certain yield loss on the display glass, impacting cost control.

[0031] In order to solve this technical problem, the utility model provides an anti-interference TFT display module, comprising a cover plate 1, an OCA adhesive layer 2 is provided on the lower surface of the cover plate 1, an upper polarizing layer 3 is provided on the lower surface of the OCA adhesive layer 2, a display glass layer 4 is provided on the lower surface of the upper polarizing layer 3, a lower polarizer 5 is provided on the lower surface of the display glass layer 4, and a backlight layer 6 is provided on the lower surface of the lower polarizer 5, wherein the upper polarizing layer 3 comprises an upper polarizer 31, an ITO impedance film 32 is provided on the upper surface of the upper polarizer 31, and a polarizer adhesive 33 is provided on the lower surface of the upper polarizer 31.

[0032] Through the above structural design, the ITO impedance film 32 on the upper polarizer 31 can play a role in shielding and protecting the display glass layer 4, which can reduce the cost pressure and yield loss caused by plating the ITO film on the display glass layer 4, and effectively reduce costs.

[0033] In order to enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein can be combined with each other.

[0035] 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, it does not need to be further defined or explained in subsequent drawings.

[0036] like Figure 1 and Figure 2 As shown, the anti-interference TFT display module includes a cover plate 1, an OCA adhesive layer 2 is provided on the lower surface of the cover plate 1, an upper polarizing layer 3 is provided on the lower surface of the OCA adhesive layer 2, a display glass layer 4 is provided on the lower surface of the upper polarizing layer 3, a lower polarizer 5 is provided on the lower surface of the display glass layer 4, and a backlight layer 6 is provided on the lower surface of the lower polarizer 5, wherein the upper polarizing layer 3 includes an upper polarizer 31, an ITO impedance film 32 is provided on the upper surface of the upper polarizer 31, and a polarizer adhesive 33 is provided on the lower surface of the upper polarizer 31.

[0037] It should be noted that the polarizer adhesive 33 is gray.

[0038] In addition, the upper polarizer 31 has the same size as the lower polarizer 5 , and the extended area of ​​the upper polarizer 31 is smaller than that of the display glass layer 4 .

[0039] In addition, the thickness of the ITO resistance film 32 is 0.1 mm to 0.3 mm. Preferably, the thickness of the ITO resistance film 32 is 0.2 mm.

[0040] The working mode of this embodiment is described below.

[0041] The ITO impedance film 32 on the upper polarizer 31 can shield and protect the display glass layer 4, thereby reducing the cost pressure and yield loss caused by plating the ITO film on the display glass layer 4 and effectively reducing costs.

[0042] like Figure 3 As shown, the anti-interference TFT display module provided in Example 1 is further optimized. Specifically, an extended resistance film 321 is provided at the edge of the ITO resistance film 32 , and the extended resistance film 321 covers the side wall of the upper polarizer 31 .

[0043] It should be noted that the thickness of the extended resistance film 321 is smaller than that of the ITO resistance film 32 .

[0044] The working mode of this embodiment is described below.

[0045] The extended resistance film 321 on the edge of the ITO resistance film 32 can further enhance the shielding protection effect and also improve the bonding strength between the ITO resistance film 32 and the upper polarizer 31 .

[0046] like Figure 4 As shown, the anti-interference TFT display module provided by Example 1 or 2 is further optimized. Specifically, an auxiliary impedance film 34 is provided on the upper surface of the ITO impedance film 32 .

[0047] It should be noted that the impedance value of the auxiliary resistance film 34 is smaller than that of the ITO resistance film 32 .

[0048] The working mode of this embodiment is described below.

[0049] By utilizing the auxiliary impedance film 34 , the anti-interference performance of the ITO impedance film 32 can be further improved, thereby forming double protection and double shielding.

[0050] The terms "coupling" and "coupling" involved in the embodiments of this application should be understood in a broad sense. For example, they may refer to a physical direct connection, or an indirect connection achieved through electronic devices, such as a connection achieved through resistors, inductors, capacitors or other electronic devices.

[0051] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0052] Obviously, the embodiments described above are only some of the embodiments of the present application, rather than all of the embodiments. The preferred embodiments of the present application are given in the accompanying drawings, but they do not limit the patent scope of the present application. The present application 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 present application more thorough and comprehensive. Although the present application has been described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions described in the aforementioned specific embodiments, or to make equivalent replacements for some of the technical features therein. Any equivalent structure made using the contents of the present application specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the present application.

Claims

1. An anti-interference TFT display module, characterized in that: The anti-interference TFT display module comprises a cover plate (1), an OCA adhesive layer (2) is provided on the lower surface of the cover plate (1), an upper polarizing layer (3) is provided on the lower surface of the OCA adhesive layer (2), a display glass layer (4) is provided on the lower surface of the upper polarizing layer (3), a lower polarizer (5) is provided on the lower surface of the display glass layer (4), and a backlight layer (6) is provided on the lower surface of the lower polarizer (5), wherein the upper polarizing layer (3) comprises an upper polarizer (31), an ITO impedance film (32) is provided on the upper surface of the upper polarizer (31), and a polarizer adhesive (33) is provided on the lower surface of the upper polarizer (31).

2. The anti-interference TFT display module according to claim 1, characterized in that: The polarizer adhesive (33) is grey.

3. The anti-interference TFT display module according to claim 1, characterized in that: The upper polarizer (31) and the lower polarizer (5) have the same size.

4. The anti-interference TFT display module according to claim 3, characterized in that: The extended area of ​​the upper polarizer (31) is smaller than that of the display glass layer (4).

5. The anti-interference TFT display module according to claim 1, characterized in that: The thickness of the ITO impedance film (32) is 0.1 mm to 0.3 mm.

6. The anti-interference TFT display module according to claim 5, characterized in that: The thickness of the ITO impedance film (32) is 0.2 mm.

7. The anti-interference TFT display module according to claim 1, characterized in that: An extended impedance film (321) is provided at the edge of the ITO impedance film (32), and the extended impedance film (321) covers the side wall of the upper polarizer (31).

8. The anti-interference TFT display module according to claim 7, characterized in that: The thickness of the extended impedance film (321) is smaller than that of the ITO impedance film (32).

9. The anti-interference TFT display module according to claim 1, characterized in that: An auxiliary impedance film (34) is provided on the upper surface of the ITO impedance film (32).

10. The anti-interference TFT display module according to claim 9, characterized in that: The impedance value of the auxiliary impedance film (34) is smaller than that of the ITO impedance film (32).

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