Backlight module and display module

Abstract

The embodiment of the utility model provides a backlight module and a display module. The backlight module comprises a light source, a light guide plate and a backlight rubber frame, the light source is arranged on the side edge of the light guide plate; the front face of the backlight rubber frame is a plane, and the light guide plate is arranged on the front face of the backlight rubber frame. And a back plate reinforcing rib, a screw hole reinforcing rib, a screw hole and an FPC (Flexible Printed Circuit) fixing part are arranged on the back surface of the backlight rubber frame. The back plate reinforcing rib, the screw hole reinforcing rib, the screw hole and the FPC fixing part are arranged on the back face of the backlight rubber frame, equivalently, a part is hollowed out on the basis of a traditional plane type backlight rubber frame, that is, on the basis that the basic thickness of the backlight rubber frame is reduced, only the structures such as the back plate reinforcing rib, the screw hole reinforcing rib and the FPC fixing part are additionally arranged, and therefore the backlight rubber frame is convenient to assemble and disassemble. The use amount of plastic materials of the backlight rubber frame is greatly saved, and the production cost is saved; in addition, due to the arrangement of the FPC fixing part, the FPC fixing part can be tightly attached to the FPC, and the tail end of the FPC is prevented from being excessively bent to cause bending damage.

Description

Technical Field

[0001] The utility model relates to the technical field of display screens, in particular to a backlight module and a display module. Background Art

[0002] Conventionally, a plastic material is often used at the back of the backlight module to protect the backlight module from excessive bending under stress, resist vibration, and provide screw holes for module fixation. The above structure often uses a plastic backplane with a flat design on both sides, which is not conducive to saving the cost of plastic materials, and the screw holes are prone to bursting; in addition, the FPC needs to be double-sided adhered to stick it to the backlight. However, when used in vehicle-mounted applications, the backlight module is often in a high-temperature environment, which easily causes the double-sided tape to melt or overflow and bounce, and the double-sided tape itself is also prone to aging, thereby reducing the service life of the backlight module. Summary of the Utility Model

[0003] The purpose of the utility model is to solve the defects existing in the prior art, and to provide a spliced curved surface cover plate and a display module.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] In a first aspect, an embodiment of the utility model provides a backlight module, including: a light source, a light guide plate, and a backlight glue holder;

[0006] The light source is arranged on the side of the light guide plate;

[0007] The front surface of the backlight glue holder is flat, and the light guide plate is arranged on the front surface of the backlight glue holder;

[0008] A backplane reinforcing rib, a screw hole reinforcing rib, a screw hole, and an FPC fixing part are arranged on the back surface of the backlight glue holder.

[0009] As a preferred embodiment of the utility model, the backplane reinforcing rib includes a first backplane reinforcing rib and a second backplane reinforcing rib, and the first backplane reinforcing rib and the second backplane reinforcing rib are symmetrically and vertically arranged on the left and right sides of the FPC fixing part.

[0010] As a preferred embodiment of the utility model, the screw hole reinforcing rib is in a "field" shape, and the screw hole is located at the center of the "field" shape.

[0011] As a preferred embodiment of the utility model, the screw holes and the screw hole reinforcing ribs are four respectively, and are respectively arranged at the four corners of the backlight glue holder.

[0012] As a preferred embodiment of the utility model, the backplane reinforcing rib and the screw hole reinforcing rib have the same thickness, and the thickness of the backplane reinforcing rib and the screw hole reinforcing rib is between 1-3 mm.

[0013] As a preferred implementation manner of the utility model, it further comprises an FPC, one end of which is connected to the light source.

[0014] As a preferred embodiment of the utility model, the other end of the FPC is provided with a reinforcement plate and a board-to-board connector;

[0015] The reinforcing plate is arranged on a side close to the backlight adhesive frame and is fixed on the FPC fixing part;

[0016] The board-to-board connector is arranged on a side away from the backlight adhesive frame.

[0017] As a preferred embodiment of the present utility model, the FPC fixing portion is provided with two fixing holes;

[0018] The bottom of the reinforcing plate is provided with two protrusions;

[0019] The two protrusions are respectively fixed in the two fixing holes through two plastic ejector pins.

[0020] As a preferred embodiment of the utility model, the plastic ejector pin comprises a hard plastic body and a soft plastic ring;

[0021] The hard plastic body is provided with threads;

[0022] The soft plastic ring is sleeved on the thread so that the plastic ejector pin is tightly plugged when the protruding part is fixed.

[0023] In a second aspect, an embodiment of the present invention further provides a display module, including a cover plate, a display screen, and a backlight module as in any embodiment of the present invention.

[0024] Compared with the prior art, the advantages and positive effects of this utility model are The result is:

[0025] The technical solution of the embodiment of the utility model is to set backboard reinforcement ribs, screw hole reinforcement ribs, screw holes and FPC fixing parts on the back side of the backlight glue frame, which is equivalent to hollowing out a part on the basis of the traditional flat backlight glue frame, that is, on the basis of thinning the basic thickness of the backlight glue frame, only the backboard reinforcement ribs, screw hole reinforcement ribs and FPC fixing parts and other structures are added, which greatly saves the amount of plastic material used in the backlight glue frame and saves production costs; in addition, the setting of the FPC fixing part can achieve a close fit with the FPC to prevent the FPC end from being excessively bent and damaged; the FPC can also cooperate with the fixing hole in the FPC fixing part through the protrusion on the reinforcement plate, and fix the two through a plastic ejector pin, thereby eliminating the double-sided tape structure in the traditional backlight module and avoiding the poor quality of the backlight module caused by the failure of the double-sided tape. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the back view structure of a backlight module provided by the utility model;

[0027] Figure 2 A schematic diagram of the side structure of a backlight module provided by the utility model;

[0028] Figure 3 A partial explosion schematic diagram of a backlight module provided by the utility model;

[0029] Figure 4 A schematic diagram of the local structure of an FPC provided by the utility model;

[0030] Figure 5 The utility model is a structural schematic diagram of a plastic ejector pin. DETAILED DESCRIPTION

[0031] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0033] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present invention.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In a first aspect, please refer to Figure 1-2 , an embodiment of the present utility model provides a backlight module, including: a light source 100, a light guide plate 200, and a backlight glue holder 300;

[0036] The light source 100 is disposed on a side of the light guide plate 200;

[0037] The front surface of the backlight glue holder 300 is a flat surface, and the light guide plate 200 is disposed on the front surface of the backlight glue holder 300;

[0038] A backplane reinforcing rib 310, a screw hole reinforcing rib 320, a screw hole 330, and an FPC fixing portion 340 are disposed on the back surface of the backlight glue holder 300.

[0039] The technical solution of the embodiment of the present utility model, by disposing a backplane reinforcing rib, a screw hole reinforcing rib, a screw hole, and an FPC fixing portion on the back surface of the backlight glue holder, is equivalent to hollowing out a part on the basis of a traditional flat backlight glue holder, that is, on the basis of the reduced thickness of the backlight glue holder, only adding structures such as a backplane reinforcing rib, a screw hole reinforcing rib, and an FPC fixing portion, greatly saving the plastic material usage of the backlight glue holder and saving production costs; in addition, the setting of the FPC fixing portion can achieve a tight fit with the FPC, preventing the end of the FPC from being excessively bent and causing damage.

[0040] As a preferred embodiment of the present utility model, refer to Figure 1 , the backplane reinforcing rib 310 includes a first backplane reinforcing rib 311 and a second backplane reinforcing rib 312, and the first backplane reinforcing rib 311 and the second backplane reinforcing rib 312 are symmetrically and vertically disposed on the left and right sides of the FPC fixing portion 340. In the present utility model, the first backplane reinforcing rib 311 can be disposed at one-third of the back surface of the backlight glue holder, and the second backplane reinforcing rib 312 can be disposed at two-thirds of the back surface of the backlight glue holder. It can effectively ensure the strengthening effect of the backlight glue holder.

[0041] As a preferred embodiment of the present utility model, the screw hole reinforcing rib is in a "field" shape, and the screw hole is located at the center of the "field" shape. The above special design ensures the strengthening effect of the screw hole and effectively prevents the screw hole from bursting.

[0042] As a preferred embodiment of the present utility model, refer to Figure 1 , the screw holes 330 and the screw hole reinforcing ribs 320 are respectively four and are respectively disposed at the four corners of the backlight glue holder 300. The above setting ensures the stability of the fixation between the backlight module and other devices.

[0043] As a preferred embodiment of the utility model, the thickness of the back panel reinforcement ribs and the screw hole reinforcement ribs are the same, and the thickness of the back panel reinforcement ribs and the screw hole reinforcement ribs are both between 1-3mm. First, the thickness of the back panel reinforcement ribs and the screw hole reinforcement ribs is the same, which ensures that the overall thickness of the back of the backlight plastic frame is consistent, so that it has good flatness when installed on other devices; secondly, the thickness of the back panel reinforcement ribs and the screw hole reinforcement ribs are both between 1-3mm, which avoids the phenomenon of excessive local force after installation due to excessive thickness, causing the backlight to be partially dark, and also avoids the phenomenon of insufficient reinforcement effect due to too small thickness.

[0044] As a preferred embodiment of the present invention, refer to Figure 1-2 The backlight module further includes an FPC 400, one end of which is connected to the light source 100. The FPC 400 realizes power supply of the light source 100 by connecting to an external client.

[0045] As a preferred embodiment of the present invention, refer to Figure 3 , the other end of the FPC 400 is provided with a reinforcing plate 410 and a board-to-board connector 420;

[0046] The reinforcing plate 410 is disposed on a side close to the backlight plastic frame 300 and is fixed on the FPC fixing portion 340;

[0047] The board-to-board connector 420 is disposed at a side away from the backlight adhesive frame 300 .

[0048] Among them, the provision of the reinforcement plate can not only enhance the strength of the FPC end, but also fix the FPC on the FPC fixing part through the reinforcement plate, thereby eliminating the double-sided tape structure in the traditional backlight module, avoiding the poor quality of the backlight module caused by overheating and melting of the double-sided tape, overflow and shedding, or aging and failure, and avoiding affecting the service life of the backlight module.

[0049] As a preferred embodiment of the present invention, refer to Figure 3-4 , the FPC fixing portion 340 is provided with two fixing holes 341;

[0050] The bottom of the reinforcing plate 410 is provided with two protrusions 411;

[0051] The two protrusions 411 are respectively fixed in the two fixing holes 341 through two plastic ejector pins 500 .

[0052] Through the above arrangement, the reinforcing plate 410 can be stably fixed in the fixing hole 341 .

[0053] It should be understood that small holes should be provided on both sides of the protrusion 411 and the fixing hole for passing the plastic ejector pin, and the size of the small hole should be set according to the size of the plastic ejector pin.

[0054] As a preferred embodiment of the present invention, refer to Figure 5 , the plastic ejector pin 500 includes a hard plastic body 510 and a soft plastic ring 520;

[0055] The hard plastic body 510 is provided with a thread 511;

[0056] The soft plastic ring 520 is sleeved on the thread 511 , so that the plastic ejector pin 500 is tightly plugged when the protrusion 411 is fixed.

[0057] Through the above arrangement, when the plastic ejector pin is inserted, the soft plastic ring 520 will be sleeved on the thread 511, and the two have a large friction force, so that the soft plastic ring 520 will not be easy to move or fall off, so that the plastic ejector pin 500 is tightly plugged when fixing the protrusion 411 and is not easy to fall off.

[0058] The backlight module in the present invention also has other components, such as polarizers, filters, etc. The above technical features are not specifically limited in the embodiments of the present invention. The combination of the above prior art and the structure in the embodiments of the present invention falls within the protection scope of the present invention.

[0059] In a second aspect, an embodiment of the present invention further provides a display module, including a cover plate, a display screen, and a backlight module as in any embodiment of the present invention.

[0060] The cover plate, display screen and backlight module are stacked in sequence.

[0061] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A backlight module, characterized in that: Comprising: A light source, a light guide plate, and a backlight adhesive holder; The light source is disposed on the side of the light guide plate; The front surface of the backlight adhesive holder is a flat surface, and the light guide plate is disposed on the front surface of the backlight adhesive holder; A backplane reinforcing rib, a screw hole reinforcing rib, a screw hole, and an FPC fixing portion are provided on the back surface of the backlight adhesive holder.

2. The backlight module according to claim 1, characterized in that: The backplane reinforcing rib includes a first backplane reinforcing rib and a second backplane reinforcing rib, and the first backplane reinforcing rib and the second backplane reinforcing rib are symmetrically and vertically disposed on the left and right sides of the FPC fixing portion.

3. The backlight module according to claim 1, characterized in that: The screw hole reinforcing rib is in the shape of a "field", and the screw hole is located at the center of the "field".

4. The backlight module according to claim 3, characterized in that: The screw holes and the screw hole reinforcing ribs are four respectively, and are respectively disposed at the four corners of the backlight adhesive holder.

5. The backlight module according to claim 1, characterized in that: The backplane reinforcing rib and the screw hole reinforcing rib have the same thickness, and the thickness of the backplane reinforcing rib and the screw hole reinforcing rib is between 1 - 3 mm.

6. The backlight module according to claim 1, characterized in that: It further includes an FPC, and one end of the FPC is connected to the light source.

7. The backlight module according to claim 6, characterized in that: The other end of the FPC is provided with a reinforcing plate and a board-to-board connector; The reinforcing plate is disposed on the side close to the backlight adhesive holder and is fixed on the FPC fixing portion; The board-to-board connector is disposed on the side away from the backlight adhesive holder.

8. The backlight module according to claim 7, characterized in that: The FPC fixing portion is provided with two fixing holes; The bottom of the reinforcing plate is provided with two protruding portions; The two protruding portions are respectively fixed in the two fixing holes through two plastic thimbles.

9. The backlight module according to claim 8, characterized in that: The plastic thimble includes a rigid plastic body and a soft plastic ring; The rigid plastic body is provided with a thread; The soft plastic ring is sleeved on the thread, so that the plastic thimble is tightened when fixing the protruding portion.

10. A display module, characterized in that: It includes a cover plate, a display screen, and a backlight module as described in any one of claims 1 - 9.

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