Improved liquid crystal display screen, backlight FPC connecting structure, backlight assembly and liquid crystal display module

Abstract

The utility model relates to the technical field of display equipment, in particular to an improved liquid crystal screen, a backlight FPC (Flexible Printed Circuit) connecting structure, a backlight assembly and a liquid crystal display module. The LCD liquid crystal display screen consists of an upper polaroid, upper glass, lower glass, a lower polaroid, a driving IC (integrated circuit) and a display screen FPC (flexible printed circuit); the lower glass is provided with a first ITO PAD area and a non-functional second ITO PAD area on the binding area of the display screen FPC, and after the lower glass is bound with the display screen FPC, the lower glass is used for enhancing the tensile capacity of one side of the backlight FPC. According to the utility model, the problem that the backlight FPC is bent and broken can be avoided, the occupied space of the FPC is reduced, and the terminal application does not need to consider the avoidance problem of the backlight FPC. In addition, a non-functional pin and a binding PAD are additionally arranged on one side connected with the backlight FPC, so that the tensile capacity of the backlight connection FPC is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to display equipment technical field, especially a kind of improved liquid crystal display, backlight FPC connecting structure and backlight assembly and liquid crystal display module. BACKGROUND

[0002] The structure of the existing liquid crystal display module is shown in the drawing, which mainly consists of LCD and backlight, wherein the backlight FPC needs to be welded on the LCD display screen FPC. Figure 1

[0003] When the FPC is bent to the back of the module, the backlight FPC is easily broken at the welding joint with the LCD display screen FPC due to the bending arch force.

[0004] A protruding part is needed on the LCD display screen FPC for welding the backlight FPC, and the terminal needs to avoid the backlight FPC and the protruding part of the LCD display screen FPC to avoid scratching and damage. INVENTION CONTENTS

[0005] The utility model aims at the problems in the background art and proposes an improved liquid crystal display, backlight FPC connecting structure and backlight assembly and liquid crystal display module. The PCB on which the backlight LED lamp is placed is exposed by opening a window on the back of the backlight, and the solder pad for welding the backlight FPC is designed on the window. The backlight FPC is designed integrally with the LCD FPC, and the backlight FPC is separated from the FPC binding area and bent to the back of the module, and welded on the solder pad of the window area of the backlight PCB. This scheme can avoid the problem of breaking of the backlight FPC, reduce the space occupied by the FPC, and the terminal application does not need to consider the problem of avoiding the backlight FPC.

[0006] The technical scheme of the utility model is an improved liquid crystal display, which consists of an upper polarizing plate, an upper glass sheet, a lower glass sheet, a lower polarizing plate, a drive IC and a display screen FPC.

[0007] The lower glass sheet is provided with a first ITO support area and a second ITO support area without function on the binding area of the display screen FPC, which is used to enhance the tensile strength of the backlight FPC on one side after binding with the display screen FPC.

[0008] Preferably, the display screen FPC is provided with a first pin and a second pin, which are used for hot-pressing fixation with the first ITO support area and the second ITO support area, respectively.

[0009] Preferably, the second pin is a non-functional pin.

[0010] Preferably, the display screen FPC is bound with the lower glass sheet of the LCD liquid crystal display using ACF conductive glue through hot-pressing.​

[0011] Preferably, a layer of silica gel protective layer is arranged outside the driving IC.

[0012] An improved backlight FPC connecting structure is integrated with the display screen FPC in the LCD liquid crystal display screen;

[0013] The backlight FPC is branched from the display screen FPC to form a "Z" type structure;

[0014] The backlight FPC is provided with a third pin connected with the backlight assembly at one end away from the second pin.

[0015] Preferably, when the backlight FPC is bent by 180 degrees to the rear part of the backlight assembly, the third pin is connected with the backlight PCB on the backlight assembly.

[0016] An improved backlight assembly comprises a backlight lamp group, a backlight substrate and a backlight PCB;

[0017] The backlight PCB on which the backlight lamp group is placed is exposed by windowing the back surface of the backlight substrate, and the soldering pad for soldering the backlight FPC for controlling the backlight assembly is arranged on the backlight PCB at the windowed position.

[0018] Preferably, the position of the soldering pad on the backlight PCB is lower than the side wall of the backlight glue frame.

[0019] A liquid crystal display module comprises the LCD liquid crystal display screen and the backlight assembly, and the backlight FPC is connected after the LCD liquid crystal display screen and the backlight assembly are combined together.

[0020] Compared with the prior art, the backlight FPC connecting structure has the following beneficial technical effects:

[0021] The backlight PCB on which the backlight lamp group is placed is exposed by windowing the back surface of the backlight substrate, and the soldering pad for soldering the backlight FPC for controlling the backlight assembly is arranged on the backlight PCB at the windowed position. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a display module structure schematic view in the prior art;

[0023] Figure 2 It is a structure schematic view of the improved liquid crystal display screen in the embodiment of the utility model.

[0024] Figure 3 Structure diagram of the improved backlight module in the embodiment of the utility model;

[0025] Figure 4 Structure diagram of the improved liquid crystal display module in the embodiment of the utility model;

[0026] Figure 5 Structure diagram of the improved FPC in the embodiment of the utility model.

[0027] Reference signs: 1, display screen FPC; 11, first pin; 12, second pin; 2, backlight FPC; 3, LCD liquid crystal display screen; 31, upper polarizing sheet; 32, lower polarizing sheet; 33, upper sheet glass; 34, lower sheet glass; 35, first ITO support area; 36, second ITO support area; 4, backlight assembly; 41, backlight lamp group; 42, window; 43, backlight PCB; 5, silica gel protective layer; 6, driving IC. DETAILED DESCRIPTION

[0028] Embodiment 1

[0029] As Figure 2 shown, the utility model provides an improved liquid crystal display screen, LCD liquid crystal display screen 3 is composed of upper polarizing sheet 31, upper sheet glass 33, lower sheet glass 34, lower polarizing sheet 32, driving IC 6 and display screen FPC 1;

[0030] Lower sheet glass 34 sets up first ITO support area 35 and non-functional second ITO support area 36 on the binding area of display screen FPC 1, and sets up first pin 11 and second pin 12 on display screen FPC 1, wherein second pin 12 is non-functional pin, first pin 11 is used to be fixed with first ITO support area 35 by hot pressing, and second pin 12 is used to be fixed with second ITO support area 36 by hot pressing. Display screen FPC 1 is bound with lower sheet glass 34 of LCD liquid crystal display screen 3 by using ACF conductive glue through hot pressing.

[0031] In addition

[0032] In the embodiment, a layer of silica gel protective layer 5 is arranged outside driving IC 6, and is used to protect driving IC 6. The improved liquid crystal display screen 3 structure can enhance the tensile capacity of one side of backlight FPC 2.

[0033] Embodiment 2

[0034] An improved backlight FPC connecting structure, as Figure 5As shown, it is integrated with the display FPC1 of the LCD display 3 in Example 1. The backlight FPC2 branches out from the display FPC1 to form a "Z"-shaped structure. The end of the backlight FPC2, away from the second pin, is provided with a third pin connected to the backlight assembly 4. When the backlight FPC2 is bent 180° to the rear of the backlight assembly 4, the third pin is connected to the backlight PCB 43 on the backlight assembly 4.

[0035] In this embodiment, the improved backlight FPC 2 reduces the space occupied by the FPC, and the terminal product does not need to be provided with a space avoidance, thereby greatly improving space utilization.

[0036] Example 3

[0037] An improved backlight assembly, such as Figure 3 As shown, it includes a backlight lamp group 41, a backlight substrate and a backlight PCB board 43;

[0038] A window 42 is formed on the back of the backlight substrate, exposing a backlight PCB 43 housing the backlight assembly 41. Pads for soldering the backlight FPC 2 are located on the backlight PCB 43 at the window 42. These pads are used to solder the backlight FPC 2, which controls the backlight assembly. The solder points on the backlight PCB 43 must be lower than the sidewalls of the backlight frame.

[0039] In this embodiment, the backlight FPC 2 is bent separately at the FPC binding area to the back of the module and soldered to the pads in the window 42 area of ​​the backlight PCB board 43, thereby avoiding the problem of the backlight FPC being bent and broken.

[0040] Example 4

[0041] A liquid crystal display module, such as Figure 4 As shown, the LCD screen 3 of Example 1 and the backlight assembly 4 of Example 3 are combined and connected using the backlight FPC 2 of Example 2. This effectively avoids the problem of the backlight FPC 2 being bent or broken, and at the same time reduces the space occupied by the FPC, eliminating the need for a space avoidance device, thus saving space.

[0042] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Various changes can be made within the knowledge scope of those skilled in the art without departing from the purpose of the present invention.

Claims

1. An improved liquid crystal display screen, characterized in that: The LCD display screen (3) is composed of an upper polarizer (31), an upper glass (33), a lower glass (34), a lower polarizer (32), a driver IC (6) and a display screen FPC (1); The lower glass (34) is provided with a first ITO supporting area (35) and a second non-functional ITO supporting area (36) on the binding area of ​​the display screen FPC (1), and is used to enhance the tensile strength of one side of the backlight FPC (2) after being bound to the display screen FPC (1).

2. The improved liquid crystal display screen according to claim 1, characterized in that: A first pin (11) and a second pin (12) are provided on the display screen FPC (1); the pins are used for hot pressing and fixing the first ITO support area (35) and the second ITO support area (36) respectively.

3. The improved liquid crystal display screen according to claim 2, characterized in that: The second pin (12) is a non-functional pin.

4. The improved liquid crystal display screen according to claim 2, characterized in that: The display screen FPC (1) is bonded to the lower glass (34) of the LCD liquid crystal display screen (3) by using ACF conductive adhesive through hot pressing.

5. The improved liquid crystal display screen according to claim 1, characterized in that: A silicone protective layer (5) is provided on the outer side of the driver IC (6).

6. An improved backlight FPC connection structure, characterized in that: The display screen FPC (1) is integrated with the improved liquid crystal display screen according to any one of claims 1 to 5; The backlight FPC (2) is separated from the display screen FPC (1) to form a "Z"-shaped structure; A third pin connected to the backlight assembly (4) is provided at one end of the backlight FPC (2) away from the second pin.

7. The improved backlight FPC connection structure according to claim 6, characterized in that: When the backlight FPC (2) is bent 180 degrees to the rear of the backlight assembly (4), the third pin is connected to the backlight PCB board (43) on the backlight assembly (4).

8. An improved backlight assembly, characterized in that: It includes a backlight lamp group (41), a backlight substrate and a backlight PCB board (43); A window (42) is opened on the back of the backlight substrate to expose a backlight PCB (43) on which a backlight lamp group (41) is placed. A soldering pad for soldering a backlight FPC (2) is provided on the backlight PCB (43) at the window (42) for soldering the backlight FPC (2) for controlling the backlight assembly.

9. The improved backlight assembly according to claim 8, characterized in that: The soldering points on the backlight PCB board (43) are located lower than the side walls of the backlight glue frame.

10. A liquid crystal display module, characterized in that: The improved liquid crystal display comprises the improved liquid crystal display according to any one of claims 1 to 5 and the improved backlight assembly according to claim 8 or 9; after the LCD liquid crystal display (3) and the backlight assembly (4) are combined together, they are connected using the improved backlight FPC connection structure according to claim 6 or 7.

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