Liquid crystal display screen structure capable of preventing FPC (Flexible Printed Circuit) bound pad from being torn off

Abstract

The utility model discloses a liquid crystal display screen structure capable of preventing an FPC binding pad from being torn off, which comprises an upper piece of glass, a lower piece of glass and an FPC, a binding protruding part is formed on the lower piece of glass, an FPC binding area is arranged on the binding protruding part, a limiting groove is formed in the FPC binding area, a display screen binding pad is arranged on the limiting groove, and the FPC binding pad is arranged on the FPC. The FPC binding pad is in binding connection with the display screen binding pad through a conductive adhesive, and the FPC binding area is covered with a first protective adhesive. Thus, through the limiting groove, the FPC, the FPC binding pad and the display screen binding pad are all arranged in the limiting groove, so that the risk that the FPC binding pad is pulled or collided is reduced, and the risk that the FPC binding pad is torn off is reduced; meanwhile, the FPC binding area is covered with the first protective glue, so that the FPC binding pad and the display screen binding pad are completely sealed in the limiting groove, and the FPC binding pad can be further prevented from being torn off.

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 structure for preventing an FPC binding pad from being torn off. Background Art

[0002] The current display module is usually composed of a liquid crystal display and a backlight module. The liquid crystal display is the core component of the screen display. The FPC is usually bound to the liquid crystal display. The mobile phone provides the necessary power and control signals to the driver IC of the display module through the FPC, so that the driver IC drives the liquid crystal display and displays the required picture.

[0003] The FPC is usually provided with a bonding pad (solder pad), and the FPC bonding pad is connected to the display bonding pad on the LCD screen through conductive glue (see Figure 1 As described above, the existing display screen binding pad is raised relative to the plane of the lower glass to form a binding connection. However, due to the complex production process of the display module and the fact that the FPC is usually long, it is easy to bump and pull when taking the FPC or the LCD screen during the production process, which can easily cause the binding pad on the FPC to be torn off. Then, at the edge of the binding area between the FPC and the LCD screen, the binding pad on the FPC and the binding pad on the LCD screen are separated, resulting in connection failure, which ultimately causes the display module to be unable to be used normally.

[0004] In view of the above, a liquid crystal display screen structure is proposed to prevent the FPC binding pad from being torn off. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a liquid crystal display screen structure that prevents an FPC binding pad from being torn off, thereby improving the production quality of a display module.

[0006] The purpose of this utility model is achieved through the following technical solutions:

[0007] A liquid crystal display screen structure for preventing an FPC binding pad from being torn off comprises: an upper glass, a lower glass and an FPC, wherein the lower glass is arranged on a side surface of the upper glass, and a side edge of the lower glass extends in a direction away from the upper glass to form a binding protrusion, an FPC binding area is arranged on the binding protrusion, a limiting groove is provided on the FPC binding area, a display binding pad is arranged on the limiting groove, and an FPC binding pad is arranged on the FPC; the FPC binding pad forms a binding connection with the display binding pad through conductive glue, the FPC binding area is covered with a first protective glue, and the first protective glue is located on a side of the FPC away from the display binding pad.

[0008] In one of the embodiments, the depth of the limiting groove is greater than or equal to the total thickness of the FPC and the display screen binding pad.

[0009] In one embodiment, the conductive adhesive is ACF conductive adhesive.

[0010] In one embodiment, the first protective glue is UV protective glue.

[0011] In one embodiment, the coverage area of ​​the first protective glue is larger than the area of ​​the limiting groove.

[0012] In one of the embodiments, an IC chip binding area is further provided on the binding protrusion, and an IC chip is bound and provided on the IC chip binding area.

[0013] In one of the embodiments, a display screen quick inspection area is also provided on the binding protrusion, and a quick inspection pad is provided on the display screen quick inspection area.

[0014] In one embodiment, the display screen quick inspection area is covered with a second protective glue.

[0015] In one embodiment, the second protective glue is UV protective glue.

[0016] In one of the embodiments, it further includes an upper polarizer and a lower polarizer, and the upper polarizer, the upper glass, the lower glass and the lower polarizer are stacked in sequence.

[0017] Compared with the prior art, the utility model has at least the following advantages:

[0018] The liquid crystal display screen structure for preventing the FPC binding pad from being torn off of the utility model is provided with an upper glass, a lower glass and an FPC, and a limiting groove is opened on the FPC binding area. Through the limiting groove, the FPC, the FPC binding pad and the display screen binding pad are all built into the limiting groove, so that the risk of the FPC binding pad being pulled or collided can be reduced, thereby reducing the risk of the FPC binding pad being torn off; at the same time, the first protective glue is covered on the FPC binding area, that is, the first protective glue is covered on the FPC surface, so that the FPC binding pad and the display screen binding pad are completely sealed in the limiting groove, thereby further preventing the FPC binding pad from being torn off, thereby improving the binding stability of the FPC. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.

[0020] Figure 1 A schematic diagram of a structure for setting a display screen binding pad on an existing lower glass;

[0021] Figure 2 It is a structural schematic diagram of a liquid crystal display screen structure for preventing an FPC binding pad from being torn off in one embodiment of the utility model;

[0022] Figure 3 for Figure 2 A schematic diagram of a partial enlarged structure of a liquid crystal display structure preventing the FPC binding pad from being torn off;

[0023] Figure 4 for Figure 3 Schematic diagram of the stacking structure of the lower glass, display binding pad, FPC and first protective glue. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.

[0025] See also Figure 2 , Figure 3 and Figure 4 As shown, a liquid crystal display structure for preventing an FPC binding pad from being torn off comprises: an upper glass 100, a lower glass 200 and an FPC 300, wherein the lower glass 200 is arranged on one side surface of the upper glass 100, and one side edge of the lower glass 200 extends in a direction away from the upper glass 100 to form a binding protrusion 230, an FPC binding area is arranged on the binding protrusion 230, a limiting groove 210 is provided on the FPC binding area, a display binding pad 220 is arranged on the limiting groove 210, and an FPC binding pad 310 is arranged on the FPC 300; the FPC binding pad 310 is bound and connected to the display binding pad 220 through conductive glue, the FPC binding area is covered with a first protective glue 400, and the first protective glue 400 is located on a side of the FPC 300 away from the display binding pad 220.

[0026] It should be noted that a limiting groove 210 is opened on the FPC binding area. Through the limiting groove 210, the FPC300, the FPC binding pad310 and the display screen binding pad220 are all built into the limiting groove 210. In this way, the risk of the FPC binding pad310 being pulled or collided can be reduced, thereby reducing the risk of the FPC binding pad310 being torn off; at the same time, the first protective glue 400 is covered on the FPC binding area, that is, the first protective glue 400 is covered on the surface of the FPC300, so that the FPC binding pad310 and the display screen binding pad220 are completely sealed in the limiting groove 210, thereby further preventing the FPC binding pad310 from being torn off, thereby improving the binding stability of the FPC300.

[0027] Furthermore, the depth of the limit groove 210 is greater than or equal to the total thickness of the FPC 300 and the display screen binding pad 220. The FPC 300 here includes the FPC body and the FPC binding pad 310, so that the depth of the limit groove 210 is greater than or equal to the total thickness of the FPC 300 and the display screen binding pad 220, so that the FPC body, the FPC binding pad 310 and the display screen binding pad 220 are completely built into the limit groove 210, so as to reduce the risk of the FPC binding pad 310 being pulled or collided.

[0028] Preferably, the conductive adhesive is an ACF (anisotropic conductive film) conductive adhesive. ACF conductive adhesive has anisotropic conductivity, which can ensure accurate connection while effectively avoiding short circuit problems. At the same time, ACF conductive adhesive has high bonding strength, so it can ensure bonding firmness.

[0029] Preferably, the first protective adhesive 400 is a UV protective adhesive. UV protective adhesive is an adhesive that can be quickly cured under ultraviolet light, and has the advantages of high adhesive strength and good weather resistance.

[0030] Preferably, the coverage area of ​​the first protective glue 400 is larger than the area of ​​the limiting groove 210, so as to ensure that the first protective glue 400 can completely cover the FPC body located in the FPC binding area.

[0031] Furthermore, an IC chip 500 binding area is also provided on the binding protrusion 230, and an IC chip 500 is bound and provided on the IC chip 500 binding area. The IC chip 500 drives the liquid crystal display screen to display images.

[0032] In one embodiment, a display screen quick inspection area 600 is also provided on the binding protrusion 230, and a quick inspection pad is provided on the display screen quick inspection area 600. The display screen quick inspection area 600 is provided to facilitate quick quality inspection of the liquid crystal display screen. In this embodiment, since the quick inspection pad is exposed metal, the display screen quick inspection area 600 is covered with a second protective glue, and the quick inspection pad is protected from water vapor erosion and electrostatic damage by the second protective glue. In this embodiment, two display screen quick inspection areas 600 are provided, and the two display screen quick inspection areas 600 are respectively on both sides of the FPC binding area.

[0033] Preferably, the second protective glue is UV protective glue. That is, the first protective glue 400 and the second protective glue are both UV protective glue, so when applying the second protective glue, it is only necessary to extend the second protective glue to the FPC binding area without adding another coating process.

[0034] Specifically, the liquid crystal display structure also includes an upper polarizer and a lower polarizer, and the upper polarizer, the upper glass 100, the lower glass 200 and the lower polarizer are stacked in sequence. The lower polarizer is mainly used to convert the light source of the backlight into polarized light, and the upper polarizer is used to analyze the polarized light and display the corresponding picture.

[0035] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A liquid crystal display structure for preventing an FPC binding pad from being torn off, characterized in that: include: An upper glass, a lower glass and an FPC, wherein the lower glass is arranged on one side of the upper glass, and one side of the lower glass extends away from the upper glass to form a binding protrusion, an FPC binding area is arranged on the binding protrusion, a limiting groove is arranged on the FPC binding area, a display screen binding pad is arranged on the limiting groove, and an FPC binding pad is arranged on the FPC; The FPC binding pad is bound and connected to the display screen binding pad through conductive adhesive, the FPC binding area is covered with a first protective adhesive, and the first protective adhesive is located on a side of the FPC away from the display screen binding pad.

2. The liquid crystal display structure for preventing the FPC binding pad from being torn off according to claim 1, characterized in that: The depth of the limiting groove is greater than or equal to the total thickness of the FPC and the display screen binding pad.

3. The liquid crystal display structure for preventing the FPC binding pad from being torn off according to claim 1, characterized in that: The conductive adhesive is ACF conductive adhesive.

4. The liquid crystal display structure for preventing the FPC binding pad from being torn off according to claim 1, characterized in that: The first protective glue is UV protective glue.

5. The liquid crystal display structure for preventing the FPC binding pad from being torn off according to claim 4, characterized in that: The coverage area of ​​the first protective glue is larger than the area of ​​the limiting groove.

6. The liquid crystal display structure for preventing the FPC binding pad from being torn off according to claim 1, characterized in that: The binding protrusion is also provided with an IC chip binding area, and an IC chip is bound and provided on the IC chip binding area.

7. The liquid crystal display structure for preventing the FPC binding pad from being torn off according to claim 1, characterized in that: A display screen quick inspection area is also arranged on the binding protrusion, and a quick inspection pad is arranged on the display screen quick inspection area.

8. The liquid crystal display structure for preventing the FPC binding pad from being torn off according to claim 7, characterized in that: The display screen quick inspection area is covered with a second protective glue.

9. The liquid crystal display structure for preventing the FPC binding pad from being torn off according to claim 8, characterized in that: The second protective glue is UV protective glue.

10. The liquid crystal display structure for preventing the FPC binding pad from being torn off according to claim 1, characterized in that: It also includes an upper polarizer and a lower polarizer, and the upper polarizer, the upper glass, the lower glass and the lower polarizer are stacked in sequence.

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