Liquid crystal display screen capable of preventing ACF edge from being corroded
Through the covering structure of COG-ACF film and FOG-ACF film, the ACF edge corrosion problem is solved, ensuring the normal conduction of the ITO leads and preventing abnormal functions of the LCD screen.
Patent Information
- Application Number
- CN202420931244.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-04-30
AI Technical Summary
In high temperature and high humidity environments, the edges of ACF are easily corroded, affecting the ITO leads between COG-ACF and FOG-ACF, resulting in abnormal function of the LCD screen.
By designing the covering structure between COG-ACF film and FOG-ACF film, the FOG-ACF film covers the edge of the COG-ACF film and completely covers the surface of the ITO leads to prevent corrosion of the film edges and ensure the conduction of the ITO leads. performance.
Effectively prevent ACF edge corrosion, ensure the normal operation of the ITO leads, and avoid abnormal display functions.
Smart Images
Figure CN222354167U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of liquid crystal display screens, in particular to a liquid crystal display screen capable of preventing ACF edge corrosion. Background Art
[0002] When the LCD screen is produced and assembled, the driver IC and FPC need to be bound on the glass substrate. The driver IC needs to be bonded to the glass substrate by COG-ACF hot pressing, and the FPC side is aligned with the bonding PAD on the glass and bonded to the glass substrate by FOG-ACF hot pressing. The FPC bonding PAD and the driver IC are connected by ITO leads. In the existing technology, there is a certain gap between COG-ACF and FOG-ACF after they are placed on the glass substrate (such as the attached Figure 4 As shown in the figure, due to the gold balls on the ACF, the edge of the ACF is prone to corrosion in a high temperature and high humidity environment. The corrosion will affect the ITO leads between the COG-ACF and the FOG-ACF, causing the entire display to malfunction.
[0003] Therefore, in view of the problem that the edge of the ACF in the existing technology is prone to corrosion, we have designed a liquid crystal display screen that can prevent the edge of the ACF from corrosion. Utility Model Content
[0004] The utility model aims to overcome the above-mentioned shortcomings and provide a technical solution that can solve the above-mentioned problems.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a liquid crystal display screen for preventing ACF edge corrosion, comprising a glass substrate, an FPC body, a driver IC and an ITO lead; a binding area is arranged on the left side of the bottom of the front side of the glass substrate, the driver IC is bound to the binding area by hot pressing of a COG-ACF film, and the FPC body is bound to the FPC binding PAD position on the binding area by hot pressing of a FOG-ACF film; the top of the back side of the FOG-ACF film covers the bottom of the front side of the COG-ACF film; the FPC body and the driver IC are connected by an ITO lead.
[0006] As a further solution of the utility model: the ITO lead is arranged in the binding area of the glass substrate, and the lower part of the ITO lead is covered by the FOG-ACF film, and the upper part of the ITO lead is covered by the COG-ACF film.
[0007] As a further solution of the utility model: the area of the FOG-ACF film is larger than the area of the COG-ACF film, and the bottom edge of the FOG-ACF film and the bottom edge of the glass substrate are on the same horizontal line.
[0008] As a further solution of the utility model: the covering parts of the FOG-ACF film and the COG-ACF film form an overlapping part, and the overlapping part is a rectangular structure.
[0009] As a further solution of the utility model: the COG-ACF film is an anisotropic conductive film that binds the driver IC to a glass substrate.
[0010] As a further solution of the utility model: the FOG-ACF adhesive film is an anisotropic conductive adhesive film that binds the FPC body to a glass substrate.
[0011] As a further solution of the utility model: a glass substrate 2 is also installed on the front of the glass substrate 1, the width of the glass substrate 2 is smaller than that of the glass substrate 1, and a blank area is left at the bottom of the front of the glass substrate 1 for convenient binding of the driver IC and the FPC body.
[0012] As a further solution of the utility model: a polarizer 1 is installed on the back of the glass substrate 1, and a polarizer 2 is installed on the front of the glass substrate 2, and the polarizer 2 corresponds to the polarizer 1.
[0013] As a further solution of the utility model: a double-sided adhesive tape is also adhered to the back side of the FPC body, and a release paper is adhered to the side of the double-sided adhesive tape away from the FPC body.
[0014] As a further solution of the utility model: the front bottom of the FPC body is a welding end, and gold fingers are equidistantly arranged on the welding end.
[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0016] In the present application, the COG-ACF film and FOG-ACF film are designed, and the FOG-ACF film is covered on the COG-ACF film, so that the COG-ACF film and the FOG-ACF film can completely cover the surface of the ITO lead, thereby shielding the ITO lead and preventing corrosion from occurring at the edges of the COG-ACF film and the FOG-ACF film, thereby affecting the ITO lead on the glass substrate used to connect the FPC body to the driver IC, thereby destroying its conduction performance and causing abnormal operation of the display screen. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a front view structural schematic diagram of a liquid crystal display screen for preventing ACF edge corrosion according to the utility model;
[0018] Figure 2 This utility model Figure 1 A is an enlarged structural diagram;
[0019] Figure 3 It is a side view structural schematic diagram of a liquid crystal display screen for preventing ACF edge corrosion according to the utility model;
[0020] Figure 4 It is a schematic diagram of the installation of COG-ACF film and FOG-ACF film in the existing technology.
[0021] The reference numerals and names in the figures are as follows:
[0022] 1. Glass substrate 1; 2. Polarizer 1; 3. Glass substrate 2; 4. Polarizer 2; 5. FPC body; 501, double-sided tape; 6. Driver IC; 7. COG-ACF film; 8. FOG-ACF film; 9. Overlapping part; 10. ITO lead. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0024] See also Figure 1-3 A liquid crystal display screen for preventing ACF edge corrosion comprises a glass substrate 1, an FPC body 5, a driver IC 6 and an ITO lead 10. A glass substrate 2 3 is also installed on the front of the glass substrate 1. The width of the glass substrate 2 3 is smaller than that of the glass substrate 1. A blank area is reserved at the bottom of the front of the glass substrate 1 for convenient binding of the driver IC 6 and the FPC body 5; a polarizer 2 is installed on the back of the glass substrate 1, and a polarizer 2 4 is installed on the front of the glass substrate 2 3. The polarizer 2 4 corresponds to the polarizer 1 2; a binding area is arranged on the left side of the bottom of the front of the glass substrate 1, the driver IC 6 is hot-pressed and bound to the binding area by a COG-ACF film 7, and the FPC body 5 is hot-pressed and bound to the FPC binding PAD position on the binding area by a FOG-ACF film 8; the top of the back of the FOG-ACF film 8 covers the bottom of the front of the COG-ACF film 7; the FPC body 5 and the driver IC 6 are connected through the ITO lead 10.
[0025] Specifically, the driver IC 6 is firstly bonded to the glass substrate 1 by hot pressing using the COG-ACF film 7, and then the FPC body 5 is bonded to the FPC binding PAD position on the glass substrate 1 by hot pressing using the FOG-ACF film 8. The top of the back side of the FOG-ACF film 8 covers the bottom of the front side of the COG-ACF film 7, thereby forming an overlapping portion 9 at the covered portion. The FOG-ACF film 8 and the COG-ACF film 7 completely cover the ITO leads 10 on the glass, thereby preventing corrosion from occurring at the edges of the FOG-ACF film 8 and the COG-ACF film 7, thereby damaging the ITO leads 10 and affecting the normal operation of the display screen.
[0026] See also Figure 1-2 In this embodiment, the ITO lead 10 is arranged in the binding area of the glass substrate 1, and the lower part of the ITO lead 10 is covered by the FOG-ACF film 8, and the upper part of the ITO lead 10 is covered by the COG-ACF film 7.
[0027] Specifically, the COG-ACF film 7 and the FOG-ACF film 8 can completely cover the ITO lead 10 , thereby shielding the ITO lead 10 and ensuring that the ITO lead 10 is normally turned on to drive the IC 6 and the FPC body 5 .
[0028] See also Figure 2 In this embodiment, the area of the FOG-ACF film 8 is larger than the area of the COG-ACF film 7, and the bottom edge of the FOG-ACF film 8 is on the same horizontal line as the bottom edge of the glass substrate 1, and the covering parts of the FOG-ACF film 8 and the COG-ACF film 7 form an overlapping portion 9, and the overlapping portion 9 is a rectangular structure.
[0029] Specifically, the FOG-ACF film 8 is larger than the COG-ACF film 7, which can facilitate the FOG-ACF film 8 to cover the COG-ACF film 7, facilitating observation during hot pressing. The bottom of the FOG-ACF film 8 is flush with the bottom edge of the glass substrate 1, which ensures the flatness of the FOG-ACF film 8, and the overlapping portion 9 is the portion formed after the FOG-ACF film 8 and the COG-ACF film 7 are covered, which facilitates observation of the covered area of the COG-ACF film 7.
[0030] See also Figure 2 In this embodiment, the COG-ACF film 7 is an anisotropic conductive film for bonding the driver IC 6 to the glass substrate 1 ; the FOG-ACF film 8 is an anisotropic conductive film for bonding the FPC body 5 to the glass substrate 1 .
[0031] Specifically, the COG-ACF film 7 and the FOG-ACF film 8 are both used for binding, and can ensure the stability of the driver IC 6 and the FPC body 5 on the glass substrate 1.
[0032] See also Figure 1 and Figure 3 In this embodiment, a double-sided tape 501 is adhered to the back of the FPC body 5, and a release paper is adhered to the side of the double-sided tape 501 away from the FPC body 5; the front bottom of the FPC body 5 is a welding end, and gold fingers are equidistantly arranged on the welding end.
[0033] Specifically, the double-sided tape 501 is adhered to the back side of the FPC body 5 to facilitate the adhesion of the FPC body 5 when it is installed with other components, thereby improving the firmness of the FPC body 5. Release paper is provided on the double-sided tape 501 to protect the double-sided tape 501 when it is not used. Gold fingers are provided at the welding ends of the FPC body 5 to facilitate subsequent connection with other components.
[0034] It should be noted that the instruction manual is attached Figure 4 What is shown is the installation schematic diagram of the existing COG-ACF film and FOG-ACF film. There is a large gap between the COG-ACF film and the FOG-ACF film. That is, when corrosion occurs on the edges of the COG-ACF film and the FOG-ACF film, it will affect the ITO leads that are not covered.
[0035] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.
Claims
1. A liquid crystal display screen for preventing ACF edge corrosion, characterized in that: It comprises a glass substrate (1), an FPC body (5), a driver IC (6) and an ITO lead (10); A binding area is provided on the left side of the bottom of the front side of the glass substrate 1 (1), the driver IC (6) is bonded to the binding area by heat pressing the COG-ACF adhesive film (7), and the FPC body (5) is bonded to the FPC bonding PAD position on the binding area by heat pressing the FOG-ACF adhesive film (8); The top of the back side of the FOG-ACF film (8) covers the bottom of the front side of the COG-ACF film (7); The FPC body (5) and the driver IC (6) are connected via an ITO lead (10).
2. A liquid crystal display screen for preventing ACF edge corrosion according to claim 1, characterized in that: The ITO lead (10) is arranged in the binding area of the glass substrate (1), and the lower part of the ITO lead (10) is covered by the FOG-ACF adhesive film (8), and the upper part of the ITO lead (10) is covered by the COG-ACF adhesive film (7).
3. A liquid crystal display screen for preventing ACF edge corrosion according to claim 1, characterized in that: The area of the FOG-ACF film (8) is greater than that of the COG-ACF film (7), and the bottom edge of the FOG-ACF film (8) is on the same horizontal line as the bottom edge of the glass substrate (1).
4. The liquid crystal display screen for preventing ACF edge corrosion according to claim 1, characterized in that: An overlapping portion (9) is formed at the covering portion of the FOG-ACF adhesive film (8) and the COG-ACF adhesive film (7), and the overlapping portion (9) is a rectangular structure.
5. The liquid crystal display screen for preventing ACF edge corrosion according to claim 1, characterized in that: The COG-ACF adhesive film (7) is an anisotropic conductive adhesive film that binds the driver IC (6) to a glass substrate (1).
6. The liquid crystal display screen for preventing ACF edge corrosion according to claim 1, characterized in that: The FOG-ACF adhesive film (8) is an anisotropic conductive adhesive film that binds the FPC body (5) to a glass substrate (1).
7. A liquid crystal display screen for preventing ACF edge corrosion according to claim 1, characterized in that: A glass substrate 2 (3) is also installed on the front of the glass substrate 1 (1); the width of the glass substrate 2 (3) is smaller than that of the glass substrate 1 (1); and a blank area is left at the bottom of the front of the glass substrate 1 (1) for facilitating the binding of the driver IC (6) and the FPC body (5).
8. A liquid crystal display screen for preventing ACF edge corrosion according to claim 7, characterized in that: A polarizer 1 (2) is installed on the back of the glass substrate 1 (1), and a polarizer 2 (4) is installed on the front of the glass substrate 2 (3), and the polarizer 2 (4) corresponds to the polarizer 1 (2).
9. The liquid crystal display screen for preventing ACF edge corrosion according to claim 1, characterized in that: A double-sided adhesive tape (501) is also adhered to the back of the FPC body (5), and a release paper is adhered to the side of the double-sided adhesive tape (501) away from the FPC body (5).
10. The liquid crystal display screen for preventing ACF edge corrosion according to claim 1, characterized in that: The front bottom of the FPC body (5) is a welding end, and gold fingers are arranged at equal intervals on the welding end.