TFT screen assembly capable of preventing screen flash

Abstract

The utility model discloses a TFT screen assembly capable of preventing screen flash. The TFT screen assembly capable of preventing screen flash comprises a TFT body layer, an OCA layer arranged on the upper surface of the TFT body layer, an LENS layer arranged on the upper surface of the OCA layer, an insulating film arranged on the upper surface of the LENS layer, and a protective film arranged on the upper surface of the insulating film. The insulating film is a high-resistance film. When a user carries out film tearing operation on the protective film, due to the fact that the insulating film is a high-resistance film, the surface resistance of the LENS layer is increased, the diffusion effect of electrostatic charges on the surface of the LENS layer is slowed down and weakened, an electric field is not prone to being formed, finally the TFT body layer is not prone to being interfered by the electric field, and splash screen is avoided.

Description

Technical Field

[0001] The utility model relates to a TFT screen device, more specifically, to an anti-screen flicker TFT screen component. Background Art

[0002] When the TFT screen (i.e., liquid crystal) is fully laminated to the lens (i.e., glass layer), removing the protective film in high temperature and humidity environments can cause the TFT screen to flicker. This flickering is caused by static electricity generated during the film removal process. This static electricity quickly forms an electric field, causing the TFT liquid crystal alignment to shift rapidly. This flickering can damage the TFT screen.

[0003] Chinese invention patent document CN104752420B discloses an antistatic device for a display device, the antistatic device comprising: a first switching thin film transistor (TFT), wherein the active layer is formed of oxide; a second switching thin film transistor, wherein the active layer is formed of oxide; an equalizer thin film transistor, wherein the active layer is formed of amorphous silicon, wherein the equalizer thin film transistor comprises: a light shielding portion, the light shielding portion is formed of amorphous silicon and serves as an active layer; a first gate insulating layer formed on the light shielding portion; a source electrode connected to one side of the light shielding portion; and a drain electrode connected to the other side of the light shielding portion,

[0004] In each of the first and second switching thin film transistors, a light shielding portion formed of amorphous silicon is formed below the active layer formed of oxide, and an insulating layer is formed between the light shielding portion formed of amorphous silicon and the active layer formed of oxide. The thickness of the gate insulating layer of each of the first and second switching thin film transistors is different from the thickness of the gate insulating layer of the equalizer thin film transistor. The switching speed of each of the first and second switching thin film transistors is different from the switching speed of the equalizer thin film transistor. Each of the first and second switching thin film transistors includes: an active layer formed of oxide; a second gate insulating layer formed on the active layer; a source electrode connected to one side of the active layer; and a drain electrode connected to the other side of the active layer. The gate and source of each of the first switching thin film transistor and the second switching thin film transistor are connected to each other, each of the first switching thin film transistor and the second switching thin film transistor operates as a diode, the drain of the first switching thin film transistor and the second switching thin film transistor is connected to the gate of the equalizer thin film transistor, the source of the equalizer thin film transistor is connected to the source of the first switching thin film transistor, and the drain of the equalizer thin film transistor is connected to the source of the second switching thin film transistor.

[0005] Obviously, this patent improves the anti-static effect by improving the high electrostatic discharge (ESD) speed. This method is too costly and cannot solve the existing static electricity problem caused by film tearing.

[0006] Chinese invention patent document CN113178443B discloses a display screen with an anti-static structure, comprising a display area and a non-display area, including: a plurality of first metal traces disposed in the display area, at least one end of each first metal trace extending into the non-display area; a plurality of second metal traces disposed in the display area, at least one end of each second metal trace extending into the non-display area; and a plurality of protective devices disposed in the non-display area, each protective device connected to one end of the first metal trace or the second metal trace. The display screen located in the non-display area comprises: a substrate; a first metal layer disposed on a top surface of the substrate; the first metal layer is etched to form the first metal trace; a first insulating layer disposed on a top surface of the first metal layer; and a second metal layer disposed on a top surface of the first insulating layer; the second metal layer is etched to form the second metal trace; the two or more metal layers are connected in at least one through-hole to form at least one inductor coil; and the two or more metal layers in each through-hole form one turn of the coil. The first insulating layer includes a first through-hole extending through the top surface of the first metal layer; the second metal layer is attached to the wall of the first through-hole and to the top surface of the first metal layer within the first through-hole. The first and second metal layers are connected within the first through-hole to form a single turn of an inductor. The first metal layer includes a second through-hole extending through the top surface of the substrate; the first insulating layer is attached to the wall of the second through-hole and to the top surface of the substrate within the second through-hole. A groove is formed on the top surface of the first insulating layer, opposite the second through-hole; the second metal layer is attached to the inner sidewalls and bottom of the groove. The display further includes a second insulating layer disposed on the top surface of the second metal layer; and a third metal layer disposed on the top surface of the second insulating layer. The third metal layer is etched to form a third metal trace. The second insulating layer includes a third through-hole extending through the top surface of the second metal layer, opposite the first through-hole. The third metal layer is attached to the wall of the third through-hole and to the top surface of the second metal layer within the first through-hole. The display screen further includes: an electrostatic conduction device, which is located in the non-display area, and one end of which is connected to one end of the first metal wiring or the second metal wiring, and the other end of which is connected to the protective device.

[0007] Apparently, in the non-display area of ​​the display screen, the first metal trace is connected to the second metal trace through a through-hole to form a protective device. The resistance of this protective device can limit the current, and the inductance can greatly attenuate the electrostatic signal, thereby maximizing the ESD protection effect on the display screen. This structure also cannot solve the existing problem of static electricity generated by film tearing. Utility Model Content

[0008] Based on this, it is necessary to provide a TFT screen assembly with anti-screen flicker in response to the above technical problems. The anti-screen flicker TFT screen assembly includes a TFT main body layer, an OCA layer is provided on the upper surface of the TFT main body layer, a LENS layer is provided on the upper surface of the OCA layer, an insulating film is provided on the upper surface of the LENS layer, and a protective film is provided on the upper surface of the insulating film. The insulating film is a high-resistance film. When the user tears off the protective film, the surface resistance of the LENS layer increases due to the high-resistance insulating film, which slows down and weakens the diffusion effect of the electrostatic charge on the surface of the LENS layer, making it difficult to form an electric field, and ultimately making the TFT main body layer less susceptible to electric field interference, thereby avoiding screen flickering.

[0009] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0010] A TFT screen assembly with anti-screen flicker, comprising a TFT body layer, an OCA layer provided on the upper surface of the TFT body layer, a LENS layer provided on the upper surface of the OCA layer, an insulating film provided on the upper surface of the LENS layer, and a protective film provided on the upper surface of the insulating film.

[0011] As a preferred embodiment of the anti-screen flicker TFT screen assembly provided by the present invention, the insulating film is a high-resistance film.

[0012] As a preferred embodiment of the anti-screen flicker TFT screen assembly provided by the present invention, the thickness of the insulating film is 10 microns to 25 microns.

[0013] As a preferred embodiment of the anti-screen flicker TFT screen assembly provided by the present invention, the thickness of the insulating film is 15 microns.

[0014] As a preferred embodiment of the anti-screen flicker TFT screen assembly provided by the present invention, the resistance of the insulating film is 100 megohms to 500 megohms.

[0015] As a preferred embodiment of the anti-screen flicker TFT screen assembly provided by the present invention, the resistance of the insulating film is 300 megohms.

[0016] As a preferred embodiment of the anti-screen flicker TFT screen assembly provided by the present invention, an antistatic coating is provided on the lower surface of the protective film.

[0017] As a preferred embodiment of the anti-screen flicker TFT screen assembly provided by the present invention, the thickness of the antistatic coating is 5 microns to 10 microns.

[0018] As a preferred embodiment of the anti-screen flicker TFT screen assembly provided by the present invention, the thickness of the antistatic coating is 8 microns.

[0019] As a preferred embodiment of the anti-screen flicker TFT screen assembly provided by the present invention, a metal grid is provided on the inner surface of the antistatic coating.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The utility model provides a TFT screen assembly that prevents screen flicker. When a user removes the protective film, the high-resistance insulating film increases the surface resistance of the lens layer, slowing down the diffusion of static charge on the lens layer surface and reducing the formation of an electric field. Ultimately, the TFT body layer is less susceptible to electric field interference, thus preventing screen flicker. The TFT screen assembly has a reasonable structure, low cost, significant effect, and strong practicality.

[0022] In addition, an antistatic coating can be provided on the lower surface of the protective film. The thickness of the antistatic coating ranges from micrometers to micrometers. Preferably, the thickness of the antistatic coating is micrometers. The antistatic coating on the lower surface of the protective film reduces the generation of static electricity when the film is removed, further reducing the diffusion effect of static electricity on the surface of the LENS layer.

[0023] Alternatively, the inner surface of the antistatic coating can be provided with a metal grid. This metal grid is preferably copper and is obtained by physical deposition. During film removal, the metal grid can quickly conduct away static charges generated by the film, completely preventing static charge from accumulating on the LENS layer surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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.

[0025] Figure 1This is a schematic structural diagram of the anti-screen flicker TFT screen assembly of the present invention;

[0026] Figure 2 for Figure 1 Schematic diagram of the structure of the anti-screen flicker TFT screen component;

[0027] Figure 3 for Figure 2 A detailed enlarged schematic diagram of area A of the structural schematic diagram of the anti-screen flicker TFT screen assembly;

[0028] Figure 4 This is a schematic diagram of the three-dimensional structure of another embodiment of the anti-screen flicker TFT screen assembly of the present invention;

[0029] The markings in the figure are as follows: 1. The TFT screen assembly includes a TFT body layer; 2. An OCA layer; 4. A protective film; 41. An antistatic coating; 411. A metal grid; 5. An insulating film. DETAILED DESCRIPTION

[0030] In order to help those skilled in the art better understand the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0031] As described in the background, existing TFT screens can flicker when the protective film is removed during full lens lamination in high temperature and humidity environments. This flickering is caused by static electricity generated during the film removal process. This static electricity quickly forms an electric field, causing the liquid crystal arrangement in the TFT to rapidly shift. This flickering can damage the TFT screen.

[0032] To solve this technical problem, the present invention provides a TFT screen assembly with anti-screen flicker, comprising a TFT body layer 1, an OCA layer 2 provided on the upper surface of the TFT body layer 1, a lens layer 2 provided on the upper surface of the OCA layer 2, an insulating film 5 provided on the upper surface of the lens layer 2, and a protective film 4 provided on the upper surface of the insulating film 5. The insulating film 5 is a high-resistance film.

[0033] Through the above-mentioned structural design, when the user tears off the protective film 4, the surface resistance of the LENS layer 2 increases because the insulating film 5 is a high-resistance film, which slows down and weakens the diffusion effect of the electrostatic charge on the surface of the LENS layer 2, making it difficult to form an electric field, and ultimately making the TFT main layer 1 less susceptible to electric field interference, thereby avoiding screen flickering.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] Example 1

[0038] like Figure 1 As shown, the anti-screen flicker TFT screen assembly includes a TFT main layer 1, an OCA layer 2 is provided on the upper surface of the TFT main layer 1, a LENS layer 2 is provided on the upper surface of the OCA layer 2, an insulating film 5 is provided on the upper surface of the LENS layer 2, and a protective film 4 is provided on the upper surface of the insulating film 5.

[0039] It should be noted that the insulating film 5 is a high-resistance film.

[0040] In addition, the thickness of the insulating film 5 is 10 micrometers to 25 micrometers. Preferably, the thickness of the insulating film 5 is 15 micrometers.

[0041] In addition, the resistance of the insulating film 5 is 100 megohms to 500 megohms. Preferably, the resistance of the insulating film 5 is 300 megohms.

[0042] The working mode of this embodiment is described below.

[0043] When the user tears off the protective film 4, since the insulating film 5 is a high-resistance film, the surface resistance of the LENS layer 2 increases, which slows down and weakens the diffusion effect of the electrostatic charge on the surface of the LENS layer 2, making it difficult to form an electric field, and ultimately making the TFT main layer 1 less susceptible to electric field interference, avoiding screen flickering.

[0044] The anti-screen flicker TFT screen component has a reasonable structure, low cost, obvious effect and strong practicality.

[0045] Example 2

[0046] like Figure 2 and Figure 3 As shown, the anti-screen flicker TFT screen assembly provided in Example 1 is further optimized. Specifically, an antistatic coating 41 is provided on the lower surface of the protective film 4.

[0047] It should be noted that the thickness of the antistatic coating 41 is 5 microns to 10 microns. Preferably, the thickness of the antistatic coating 41 is 8 microns.

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

[0049] The antistatic coating 41 on the lower surface of the protective film 4 makes it difficult to generate static electricity when the film is torn off, further weakening the diffusion effect of static electricity on the surface of the LENS layer 2.

[0050] Example 3

[0051] like Figure 4 As shown, the anti-screen flicker TFT screen assembly provided in Example 1 or 2 is further optimized. Specifically, the inner surface of the antistatic coating 41 is provided with a metal grid 411.

[0052] It should be noted that the metal grids 411 are preferably made of copper and are obtained by physical deposition.

[0053] The working mode of this embodiment is described below.

[0054] When the film is being torn off, the metal grid 411 can quickly conduct away the electrostatic charge generated by the tearing of the film, thus completely preventing the electrostatic charge from accumulating on the surface of the LENS layer 2 .

[0055] 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.

[0056] 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.

[0057] 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. A TFT screen assembly for preventing screen flicker, characterized in that: The anti-screen flicker TFT screen assembly comprises a TFT main body layer (1), an OCA layer (2) is provided on the upper surface of the TFT main body layer (1), a LENS layer (2) is provided on the upper surface of the OCA layer (2), an insulating film (5) is provided on the upper surface of the LENS layer (2), and a protective film (4) is provided on the upper surface of the insulating film (5).

2. The anti-screen flicker TFT screen assembly according to claim 1, characterized in that: The insulating film (5) is a high-resistance film.

3. The anti-screen flicker TFT screen assembly according to claim 1, characterized in that: The thickness of the insulating film (5) is 10 micrometers to 25 micrometers.

4. The anti-screen flicker TFT screen assembly according to claim 3, characterized in that: The thickness of the insulating film (5) is 15 micrometers.

5. The anti-screen flicker TFT screen assembly according to claim 1, characterized in that: The resistance of the insulating film (5) is 100 megohms to 500 megohms.

6. The anti-screen flicker TFT screen assembly according to claim 5, characterized in that: The resistance of the insulating film (5) is 300 megohms.

7. The anti-screen flicker TFT screen assembly according to claim 1, characterized in that: An antistatic coating (41) is provided on the lower surface of the protective film (4).

8. The anti-screen flicker TFT screen assembly according to claim 7, characterized in that: The thickness of the antistatic coating (41) is 5 micrometers to 10 micrometers.

9. The anti-screen flicker TFT screen assembly according to claim 8, characterized in that: The thickness of the antistatic coating (41) is 8 microns.

10. The anti-screen flicker TFT screen assembly according to claim 7, characterized in that: The inner surface of the antistatic coating (41) is provided with a metal grid (411).

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