NFC function panel

Abstract

The utility model discloses an NFC (Near Field Communication) functional panel, which is characterized in that a front-back double-layer ITO (Indium Tin Oxide) structural design is adopted by lower-layer glass, an NFC antenna layer is arranged on the back surface of the lower-layer glass, a TFT (Thin Film Transistor) circuit layer is arranged on the front surface of the lower-layer glass, and then leads of the TFT circuit layer and the NFC antenna layer are bound to an FPC (Flexible Printed Circuit), so that one FPC is saved, the thickness of the whole module is reduced, the cost is saved, and the production efficiency is improved. The method has good practical value and economic value.

Description

Technical Field

[0001] The utility model relates to the technical field of display screens, in particular to an NFC function panel. Background Art

[0002] NFC (Near Field Communication) technology is an essential technology for future electronic products, and the market is huge. The antennas of existing NFC products are mainly made on one side of the battery or pasted inside the shell. The general method is to use metal traces to form a coil on a PCB or FPC, and then paste the PCB board or FPC containing the coil on the battery or the shell. Its main disadvantages are as follows: The battery and the shell are often disassembled and assembled repeatedly, which makes the wiring of the NFC antenna prone to wear or misalignment problems, ultimately resulting in a poor antenna signal and affecting the use of the NFC product function. In addition, the antenna of the NFC product is generally located inside the shell of the electronic product. If a metal material is selected for the shell, it will affect the propagation of the NFC signal, restricting the selection of a strong metal material when choosing the material for the electronic product shell.

[0003] For example, many electronic products equipped with NFC antennas and thin-film transistor TFT-LCDs have the above problems. Among them, TFT-LCD uses thin-film transistor technology to improve image quality. It is an active matrix LCD and is applied to televisions, flat panel displays, and projectors. The TFT-LCD panel can be regarded as two glass substrates sandwiching a layer of liquid crystal. The upper glass substrate is combined with a color filter, and the lower glass has transistors embedded in it. When an electric current passes through the transistor, an electric field change is generated, causing the liquid crystal molecules to deflect, thereby changing the polarization of the light, and then using a polarizer to determine the brightness state of the pixel (Pixel). In addition, since the upper glass is combined with the color filter, each pixel (Pixel) contains three colors: red, blue, and green. These pixels emitting red, blue, and green colors form the image on the panel.

[0004] The existing NFC antenna setting method for electronic products equipped with NFC antennas and thin-film transistor displays is not reasonable enough. The NFCs are designed separately, and an additional FPC is required to connect to the main board. This makes the product expensive and increases the thickness. Summary of the Utility Model

[0005] In order to solve the deficiencies of the above-mentioned prior art, the utility model provides an NFC functional panel, in which the lower glass adopts a front and back double-layer ITO structure design, the NFC antenna layer is made on the back side of the lower glass, the TFT circuit layer is made on the front side of the lower glass, and the TFT circuit layer and the NFC antenna layer are wired to an FPC, thereby saving one FPC and reducing the thickness of the entire module, saving costs, and having good practical and economic value.

[0006] By making the NFC functional line on the back of the TFT and then connecting the functional lead to the FPC, one FPC can be saved and the entire module can be made thinner without having to make a separate NFC layer.

[0007] The technical problem to be solved by the utility model is achieved through the following technical solution: an NFC function panel, comprising:

[0008] A TFT display screen, comprising an upper glass layer and a lower glass layer stacked one above the other;

[0009] A TFT circuit layer is provided on a side of the lower glass layer close to the upper glass layer, and an NFC antenna layer is provided on a side of the lower glass layer away from the upper glass layer;

[0010] The FPC simultaneously binds the TFT circuit layer and the NFC antenna layer.

[0011] As a preferred implementation scheme of the NFC functional panel provided by the present invention, a color filter CF is provided on the side of the upper glass layer facing the lower glass layer.

[0012] As a preferred implementation scheme of the NFC functional panel provided by the utility model, the upper glass and the lower glass are bonded together by means of frame glue provided around the sides, and the space enclosed by the upper glass, the frame glue and the lower glass is filled with liquid crystal material.

[0013] As a preferred implementation scheme of the NFC functional panel provided by the utility model, an upper polarizer is provided on a side of the upper glass away from the lower glass, and a lower polarizer is provided on a side of the NFC antenna layer away from the upper glass.

[0014] As a preferred implementation scheme of the NFC functional panel provided by the utility model, a backlight assembly is provided on the lower surface of the TFT display screen, and the backlight assembly is located on the side of the lower polarizer away from the lower glass.

[0015] As a preferred implementation scheme of the NFC functional panel provided by the utility model, the backlight assembly includes a lower frame, a reflective sheet, a light guide plate and an optical film group which are sequentially stacked from bottom to top.

[0016] As a preferred embodiment of the NFC function panel provided by the present utility model, the optical film group includes a diffusion film, a lower brightness enhancement film, and an upper brightness enhancement film that are sequentially stacked from bottom to top.

[0017] As a preferred embodiment of the NFC function panel provided by the present utility model, it further includes a glass cover plate, and the glass cover plate is attached to the upper surface of the TFT display screen.

[0018] As a preferred embodiment of the NFC function panel provided by the present utility model, the glass cover plate is bonded to the TFT display screen through OCA glue.

[0019] As a preferred embodiment of the NFC function panel provided by the present utility model, a light-emitting component is provided on one side of the light guide plate, and the light-emitting component includes an FPC and a plurality of top-emitting LEDs provided on the FPC.

[0020] The present utility model has the following beneficial effects: An NFC function panel includes a TFT display screen, which includes an upper layer glass and a lower layer glass stacked up and down; a TFT circuit layer is provided on one side of the lower layer glass close to the upper layer glass, and an NFC antenna layer is provided on the side of the lower layer glass away from the upper layer glass; an FPC that simultaneously binds the TFT circuit layer and the NFC antenna layer. In this application, by adopting a double-sided ITO structure design for the lower layer glass, the NFC antenna layer is made on the back surface of the lower layer glass, the TFT circuit layer is made on the front surface of the lower layer glass, and then the TFT circuit layer and the NFC antenna layer are wire-bonded to the FPC, saving one FPC while reducing the thickness of the entire module, saving costs, and having good practical value and economic value. Description of the Drawings

[0021] In order to more clearly illustrate the solutions in this application, the following will briefly introduce the drawings required for use in the description of the embodiments. Obviously, the drawings in the following description are some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic structural diagram of the NFC function panel provided by the present utility model;

[0023] Figure 2 It is a schematic structural diagram of the TFT display screen of the NFC function panel provided by the present utility model;

[0024] Figure 3 It is a schematic structural diagram of the backlight assembly of the NFC function panel provided by the present utility model;

[0025] Figure 4Schematic diagram of the light-emitting component structure of the NFC function panel provided by the present utility model.

[0026] 1. TFT display screen; 101. Upper glass; 102. Lower glass; 103. Frame adhesive; 104. Color filter CF; 105. Liquid crystal material; 106. NFC antenna layer; 107. TFT circuit layer; 108. Upper polarizer; 109. Lower polarizer; 2. FPC; 3. Backlight assembly; 31. Lower frame; 32. Reflector; 33. Light guide plate; 34. Optical film group; 341. Diffusion film; 342. Lower brightness enhancement film; 343. Upper brightness enhancement film; 4. Glass cover plate; 5. Light-emitting component; 51. LED; 52. FPC. Detailed implementation manners

[0027] The present utility model will be described in detail below with reference to the accompanying drawings and embodiments. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as a limitation of the present utility model.

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model.

[0029] In addition, the terms "first", "second", "third" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first", "second", "third" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more, unless otherwise specifically defined.

[0030] In the present utility model, unless otherwise clearly specified and defined, terms such as "installation", "connection", "linkage", "fixation", "arrangement", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can also be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] Embodiment 1

[0032] As Figure 1 shown, the present utility model provides an NFC function panel, including

[0033] a TFT display screen 1, including an upper layer glass 101 and a lower layer glass 102 which are stacked up and down;

[0034] On one side of the lower layer glass 102 close to the upper layer glass 101, there is a TFT circuit layer 107, and on one side of the lower layer glass 102 far from the upper layer glass 101, there is an NFC antenna layer 106;

[0035] an FPC 2, which binds the TFT circuit layer 107 and the NFC antenna layer 106 at the same time.

[0036] In this embodiment, the lower layer glass 102 adopts a double-sided ITO structure design. The NFC antenna layer 106 is made on the back surface of the lower layer glass 102, and the TFT circuit layer 107 is made on the front surface of the lower layer glass 102. Then, the TFT circuit layer 107 and the NFC antenna layer 106 are wire-bonded to the FPC 2, thereby reducing the thickness of the entire module, saving costs, and having good practical value and economic value.

[0037] Furthermore, as Figure 2 shown, on one side of the upper layer glass 101 facing the lower layer glass 102, there is a color filter CF104.

[0038] It should be noted that the TFT circuit layer 107 is an element used to control the switch of each pixel point in a liquid crystal display. It can change the arrangement state of liquid crystal molecules by controlling voltage, thereby achieving the display effect. The color filter CF104 is a key component for displaying color images in a liquid crystal display. It can decompose white light into red, green, and blue three primary color lights, and display rich colors by adjusting the light transmittance of different colors, ensuring that the liquid crystal display shows real and vivid color images.

[0039] Further, the upper glass 101 and the lower glass 102 are bonded by a frame adhesive 103 provided around the sides, and the space enclosed by the upper glass 101, the frame adhesive 103, and the lower glass 102 is filled with a liquid crystal material 105.

[0040] In this embodiment, the TFT display screen 1 is filled with a liquid crystal material 105. Among them, the liquid crystal is a special substance that has properties intermediate between those of a liquid and a solid. Liquid crystal molecules are arranged in an orderly manner without external influence, but when subjected to external actions such as an electric field, temperature, or pressure, the arrangement structure of the liquid crystal molecules changes, resulting in different optical properties. Liquid crystal materials are usually composed of organic molecules or polymers, and these molecules have a long shape, enabling them to form a specific arrangement structure in the liquid crystal state. According to the arrangement of liquid crystal molecules, liquid crystals can be classified into various types, including nematic liquid crystals, twisted nematic liquid crystals, cholesteric liquid crystals, etc. Liquid crystal materials are widely used in display technologies, especially in liquid crystal display screens. In a liquid crystal display screen, the liquid crystal material is filled between two pieces of glass to form a liquid crystal layer. When an electric field is applied, the arrangement structure of the liquid crystal molecules changes, thereby changing the polarization state of the light passing through the liquid crystal layer and realizing the display of images.

[0041] Further, a upper polarizer 108 is provided on the side of the upper glass substrate 101 away from the lower glass substrate 102, and a lower polarizer 109 is provided on the side of the NFC antenna layer 106 away from the upper glass substrate 101. A polarizer has a fixed polarization axis that only allows light with a vibration direction consistent with the polarization direction to pass through and absorbs light with a vibration direction perpendicular to the polarization axis, for converting non-polarized natural light into polarized light, allowing light perpendicular to the electric field direction to pass through, and enabling the liquid crystal display panel to display images normally.

[0042] Embodiment 2

[0043] As Figure 3 shown, a backlight assembly 3 is provided on the lower surface of the TFT display screen 1, and the backlight assembly 3 is located on the side of the lower polarizer 109 away from the lower glass 102.

[0044] Further, the backlight assembly 3 includes a lower frame 31, a reflector 32, a light guide plate 33, and an optical film group 34 that are sequentially stacked from bottom to top.

[0045] In this embodiment, the optical film group 34 is a thin film composite structure for optical devices, which is usually used to change the propagation and reflection characteristics of light. The optical film group 34 includes three thin films, namely, a diffusion film 341, a lower brightness enhancement film 342, and an upper brightness enhancement film 343, which are sequentially stacked from bottom to top. The diffusion film 341 functions to scatter incident light, so that the light presents a uniform diffusion distribution on the thin film surface. This helps to reduce reflection and increase transmittance, and at the same time can also reduce surface reflection and glare, improving the visual comfort of the optical device. The lower brightness enhancement film 342 functions to increase the transmittance of incident light and reduce the reflectance, thereby improving the light transmission performance of the optical device. The lower brightness enhancement film is usually achieved by depositing a layer of high refractive index material on the thin film surface, which can effectively reduce reflection loss and improve the optical performance of the optical device. The upper brightness enhancement film 343 has a similar function to the lower brightness enhancement film, but it is usually achieved by depositing a layer of low refractive index material on the thin film surface. The upper brightness enhancement film can further reduce reflection loss, improve the light transmission performance of the optical device, and at the same time can also increase the abrasion resistance and corrosion resistance of the optical device. By reasonably designing and stacking thin film layers with different functions, the optical film group 34 can effectively improve the light transmission performance of the optical device, reduce reflection loss, improve visual comfort, and increase durability.

[0046] Through the above structural settings, the backlight assembly 3 can effectively improve the light transmission efficiency and uniformity, enabling the display screen to present a clear and bright picture under different angles and light conditions. At the same time, the optical film group 34 can also effectively reduce reflection and refraction, improving the display effect and viewing experience. Overall, this backlight assembly structure can improve the brightness, contrast, and color expressiveness of the display screen, enhancing the user experience.

[0047] Embodiment Three

[0048] As Figure 4 shown, in this embodiment, the NFC function panel further includes a glass cover plate 4, and the glass cover plate 4 is attached to the upper surface of the TFT display screen 1.

[0049] Furthermore, the glass cover plate 4 is bonded to the TFT display screen 1 through an OCA adhesive. The OCA adhesive is a transparent double-sided adhesive with good bonding performance and transparency, which can ensure the bonding strength between the glass cover plate 4 and the TFT display screen 1.

[0050] Furthermore, a light-emitting component 5 is provided on one side of the light guide plate 33, and the light-emitting component 5 includes an FPC 52 and a plurality of top-emitting LEDs 51 provided on the FPC 52.

[0051] In this embodiment, the light-emitting component 5 includes an FPC 52 and a plurality of top-emitting LEDs 51 disposed on the FPC 52. At least one convex portion is provided on the light-incident surface of the light guide plate 33. The convex portion is located between adjacent LEDs 51 on the FPC 52 and presses the FPC 52. The FPC 52 has a thin and light structure, which can effectively reduce the thickness of the frame and the weight of the backlight module. However, since the FPC 52 generates a reaction force against bending at the place where it needs to be bent, especially warping is likely to occur when heated at high temperature. After the convex portion is provided at the position of the light guide plate 33 corresponding to the FPC 52, the convex portion can press the FPC 52, effectively preventing the FPC 52 from warping.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention and are not intended to limit them. Although the embodiments of the present invention have been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the embodiments of the present invention can still be modified or equivalently replaced, and these modifications or equivalent replacements cannot make the modified technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An NFC functional panel, characterized in that: include, A TFT display screen (1) comprises an upper glass layer (101) and a lower glass layer (102) stacked one above the other; A TFT circuit layer (107) is provided on a side of the lower glass (102) close to the upper glass (101), and an NFC antenna layer (106) is provided on a side of the lower glass (102) away from the upper glass (101); The FPC (2) simultaneously bonds the TFT circuit layer (107) and the NFC antenna layer (106).

2. The NFC functional panel according to claim 1, characterized in that: A color filter CF (104) is provided on the side of the upper glass (101) facing the lower glass (102).

3. The NFC functional panel according to claim 1, characterized in that: The upper glass (101) and the lower glass (102) are bonded together by means of a frame glue (103) provided around the sides, and a space enclosed by the upper glass (101), the frame glue (103) and the lower glass (102) is filled with liquid crystal material (105).

4. The NFC functional panel according to claim 1, characterized in that: An upper polarizer (108) is provided on a side of the upper glass (101) away from the lower glass (102), and a lower polarizer (109) is provided on a side of the NFC antenna layer (106) away from the upper glass (101).

5. The NFC functional panel according to claim 4, characterized in that: A backlight assembly (3) is provided on the lower surface of the TFT display screen (1); the backlight assembly (3) is located on a side of the lower polarizer (109) facing away from the lower glass (102).

6. The NFC functional panel according to claim 5, characterized in that: The backlight assembly (3) comprises a lower frame (31), a reflective sheet (32), a light guide plate (33) and an optical film group (34) which are sequentially stacked from bottom to top.

7. The NFC functional panel according to claim 6, characterized in that: The optical film group (34) comprises a diffusion film (341), a lower brightness enhancement film (342) and an upper brightness enhancement film (343) which are stacked in sequence from bottom to top.

8. The NFC functional panel according to claim 1, characterized in that: It also comprises a glass cover plate (4), wherein the glass cover plate (4) is attached to the upper surface of the TFT display screen (1).

9. The NFC functional panel according to claim 8, characterized in that: The glass cover plate (4) is bonded to the TFT display screen (1) by means of OCA glue.

10. The NFC functional panel according to claim 6, characterized in that: A light-emitting assembly (5) is provided on one side of the light guide plate (33), and the light-emitting assembly (5) comprises an FPC (52) and a plurality of top-emitting LEDs (51) provided on the FPC (52).

Images