CN216562312U

CN216562312U - Backlight source module with narrow frame structure and vehicle-mounted display device

Info

Publication number: CN216562312U
Application number: CN202123027475.4U
Authority: CN
Inventors: 刘子平; 曹俊威; 冯超
Original assignee: Shenzhen Hadbest Electronics Co ltd
Current assignee: Shenzhen Hadbest Electronics Co ltd
Priority date: 2021-12-02
Filing date: 2021-12-02
Publication date: 2022-05-17
Anticipated expiration: 2031-12-02

Abstract

The utility model provides a backlight source module with a narrow frame structure, which comprises an iron frame and a rubber frame, wherein the iron frame comprises a bottom plate and a frame connected to the bottom plate, the rubber frame comprises a side frame and a bearing frame, the bearing frame is vertically connected in the side frame, the side frame is arranged around the circumference of the frame, the side frame is connected with the frame, and an expansion gap for expanding an optical diaphragm is formed between the side edge of the frame, which is far away from the bottom plate, and the bearing frame. The backlight source module with the narrow frame structure can avoid the phenomenon that the optical film is wrinkled under the condition of meeting the narrow frame, and improves the display effect. The utility model also relates to a vehicle-mounted display device.

Description

Backlight source module with narrow frame structure and vehicle-mounted display device

Technical Field

The utility model relates to the technical field of display screens, in particular to a backlight source module with a narrow frame structure and a vehicle-mounted display device.

Background

At present, new opportunities are brought to the development of panel enterprises by the multi-screen development of automobile display screens, panel manufacturers gradually adjust strategies and seize the subdivided market of automobile display in succession, and because the market potential of the automobile terminal in China is huge and the development prospect is wide, the market demand of the automobile display is directly driven, and because the requirement of the automobile display screen on the aspect of electric function display is strict, not only the expansion gap of a membrane material but also the bearing problem between an iron frame and a rubber frame need to be considered.

Fig. 1 is a schematic cross-sectional view of a conventional vehicle-mounted backlight module, and as shown in fig. 1, a lower iron frame 22 and a rubber frame 21 of the conventional vehicle-mounted backlight module are fastened by a fixture block, and an expansion gap of an optical film 23 is not reserved between the lower iron frame 22 and the rubber frame 21, so that the gap for expanding the optical film 23 inside the vehicle-mounted backlight module is small, and the optical film 23 is prone to wrinkle or arch, which affects a display effect.

SUMMERY OF THE UTILITY MODEL

In view of this, the backlight module with a narrow frame structure of the utility model can avoid the phenomenon of wrinkling of the optical film under the condition of satisfying the narrow frame, thereby improving the display effect.

The utility model provides a backlight module of narrow frame structure, includes the chase and glues the frame, the chase includes the bottom plate and connects the frame on the bottom plate, glues the frame and includes side frame and bearing frame, and the bearing frame is connected perpendicularly in the side frame, and the side frame sets up around the circumference of frame, and the side frame is connected with the frame, and the frame is kept away from and is formed with the inflation clearance that supplies the inflation of optical diaphragm between the side of bottom plate and the bearing frame.

In the utility model, the outer wall of the frame is provided with a plurality of connecting blocks, each connecting block is arranged around the circumference of the frame, the end part of the side frame, which is far away from the bearing frame, is provided with a connecting groove, the connecting groove is arranged corresponding to the connecting block, and the connecting block is arranged in the connecting groove to fixedly connect the rubber frame to the iron frame.

In the present invention, the connecting groove is a U-shaped groove.

In the utility model, the frame is provided with a plurality of connecting grooves, the rubber frame is provided with connecting blocks which are arranged corresponding to the connecting grooves, and the connecting blocks are arranged in the connecting grooves to fixedly connect the rubber frame and the iron frame.

In the utility model, the inner wall of the rubber frame on which the rubber frame is arranged is provided with the bearing block, the bearing block is abutted against the side frame, and an expansion gap is formed between the bearing block and the bearing frame.

In the utility model, the bearing block comprises a top surface and an abutting surface which are oppositely arranged, the top surface is arranged close to the bearing frame, an expansion gap is formed between the top surface and the bearing frame, and the abutting surface abuts against the frame.

In the utility model, the backlight source module with the narrow frame structure further comprises a light bar, wherein the light bar is fixedly connected to the inner wall of the frame, and the light bar is arranged in the long axis direction of the frame.

In the utility model, the backlight module with the narrow frame structure further comprises a reflective film, a light guide plate and an optical film, wherein the reflective film is arranged on the bottom plate, the light guide plate is arranged on the reflective film, and the optical film is arranged on the light guide plate.

In the utility model, the backlight source module with the narrow frame structure further comprises foam adhesive, the foam adhesive is fixedly connected to one side of the bearing frame, which is far away from the optical diaphragm, and the foam adhesive is used for buffering and fixing the display screen.

The utility model also relates to a vehicle-mounted display device which comprises the backlight source module with the narrow frame structure.

According to the backlight module with the narrow-frame structure, the expansion gap is reserved between the frame of the iron frame and the bearing frame of the middle frame, so that the phenomenon of wrinkling or upwarping can be avoided when the optical film expands at high temperature, the product quality is improved, and the use experience of customers is improved.

Drawings

Fig. 1 is a schematic cross-sectional structural diagram of a conventional vehicle-mounted backlight module.

Fig. 2 is a schematic view of a split structure of a backlight module with a narrow bezel structure according to a first embodiment of the utility model.

Fig. 3 is a schematic side view of a backlight module with a narrow bezel structure according to a first embodiment of the disclosure.

Fig. 4 is a schematic cross-sectional structure view of a backlight module with a narrow bezel structure according to a first embodiment of the disclosure.

Fig. 5 is a schematic cross-sectional structure view of a backlight module with a narrow bezel structure according to a second embodiment of the disclosure.

Fig. 6 is a schematic cross-sectional structure view of a backlight module with a narrow bezel structure according to a third embodiment of the disclosure.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

In order to facilitate understanding of those skilled in the art, the present application provides a specific implementation process of the technical solution provided by the present application through the following embodiments.

First embodiment

Fig. 2 is a schematic diagram of a split structure of a backlight module with a narrow bezel structure according to a first embodiment of the present invention, fig. 3 is a schematic diagram of a side view structure of the backlight module with the narrow bezel structure according to the first embodiment of the present invention, fig. 4 is a schematic diagram of a cross-sectional structure of the backlight module with the narrow bezel structure according to the first embodiment of the present invention, as shown in fig. 2, fig. 3 and fig. 4, the backlight module with the narrow bezel structure includes an iron frame 11 and a rubber frame 12, the iron frame 11 includes a bottom plate 111 and a bezel 112 connected to the bottom plate 111, the rubber frame 12 includes a side frame 121 and a carrying frame 122, the carrying frame 122 is vertically connected in the side frame 121, the side frame 121 is disposed around the circumference of the bezel 112, the side frame 121 is connected to the bezel 112, and an expansion gap 101 for expanding the optical film 17 is formed between a side of the bezel 112 far from the bottom plate 111 and the carrying frame 122. In the embodiment, the bottom plate 111 and the frame 112 are integrated, the iron frame 11 is a casting, and the shape of the iron frame 11 can be designed and modified through opening the mold; the side frame 121 and the bearing frame 122 are of an integral structure, the rubber frame 12 is also a casting, and the shape of the rubber frame 12 can be designed and modified through mold opening; the material of the rubber frame 12 is, for example, PC, but not limited thereto.

According to the backlight module with the narrow-frame structure, the expansion gap 101 is reserved between the frame 112 of the iron frame 11 and the bearing frame 122 of the middle frame, so that the phenomenon of wrinkling or upwarping can be avoided when the optical film 17 expands at high temperature, the product quality is improved, and the use experience of customers is improved.

Further, the outer wall of the frame 112 is provided with a plurality of connecting blocks 13, each connecting block 13 is circumferentially arranged around the frame 112, the end portion, away from the bearing frame 122, of the side frame 121 is provided with a connecting groove 102, the connecting groove 102 and the connecting block 13 are correspondingly arranged, and the connecting block 13 is installed in the connecting groove 102 to fixedly connect the rubber frame 12 to the iron frame 11. In this embodiment, structure as an organic whole between connecting block 13 and frame 112, connecting block 13 are used for supporting gluey frame 12, and when being equipped with expansion gap 101 between gluey frame 12 and the center, gluey frame 12 easily appears connecting unstable phenomenon to produce not hard up abnormal sound, influence the quality of product, connecting block 13 improves gluey frame 12 and iron frame 11's joint strength, improves the product quality.

Further, the connecting groove 102 is a U-shaped groove. In this embodiment, the connecting groove 102 is an inverted U-shaped groove, and the connecting block 13 is snapped into the connecting groove 102 when the rubber frame 12 is mounted on the iron frame 11.

Further, the backlight module of narrow frame structure still includes lamp strip 14, and lamp strip 14 fixed connection is in the inner wall of frame 112, and lamp strip 14 locates the major axis direction of frame 112. In this embodiment, light bar 14 is attached to the inner wall of bezel 112 by bond ply 19.

Further, the backlight module with the narrow-bezel structure further includes a reflective film 15, a light guide plate 16, and an optical film 17, where the reflective film 15 is disposed on the bottom plate 111, the light guide plate 16 is disposed on the reflective film 15, and the optical film 17 is disposed on the light guide plate 16. In this embodiment, the reflective film 15 is fixedly attached to the base plate 111 by an adhesive tape, the light guide plate 16 is fixedly attached to the reflective film 15 by an adhesive tape, the optical film 17 includes a diffuser film 171, a brightness enhancement film 172 and a brightness enhancement film 173, the diffuser film 171 is fixed to the light guide plate 16 by a double-sided adhesive tape, the brightness enhancement film 172 is fixed to the diffuser film 171 by an adhesive tape, and the brightness enhancement film 173 is fixed to the brightness enhancement film 172 by an adhesive tape; the adhesive tape may be a double-sided adhesive tape or a single-sided adhesive tape, which can be selected according to actual requirements, but is not limited thereto.

In another preferred embodiment, the diffuser 171, the brightness enhancement film 172 and the brightness enhancement film 173 are provided with a notch, the light guide plate 16 is provided with a bump, and the bump is mounted in the notch to fix the diffuser 171, the brightness enhancement film 172, the brightness enhancement film 173 and the light guide plate 16, but not limited thereto.

Further, the backlight module of narrow frame structure still includes bubble celloidin 18, and bubble celloidin 18 fixed connection keeps away from the one side of optics diaphragm 17 in bearing frame 122, and bubble celloidin 18 is used for buffering fixed display screen. In this embodiment, the foam rubber 18 is in a shape like a Chinese character 'kou', and the display screen is attached to the foam rubber 18 and then fixed by edge wrapping through edge wrapping rubber.

Second embodiment

Fig. 5 is a schematic cross-sectional view of a backlight module with a narrow bezel structure according to a second embodiment of the present invention, and as shown in fig. 5, the backlight module with a narrow bezel structure of this embodiment is substantially the same in structure as the backlight module with a narrow bezel structure according to the first embodiment, and the difference is that the connection manner between the iron frame 11 and the rubber frame 12 is different.

Specifically, the frame 112 is provided with a plurality of connecting grooves 102, the rubber frame 12 is provided with a connecting block 13 corresponding to the connecting grooves 102, and the connecting block 13 is installed in the connecting grooves 102 to fixedly connect the rubber frame 12 and the iron frame 11. In the embodiment, the connection block 13 and the rubber frame 12 are an integral structure, the connection groove 102 is circumferentially disposed around the frame 112, and the shape of the connection groove 102 is, for example, a circle or a rectangle, and can be matched according to the shape of the connection block 13, but not limited thereto.

Third embodiment

Fig. 6 is a schematic cross-sectional view of a backlight module with a narrow bezel structure according to a third embodiment of the present invention, and as shown in fig. 6, the backlight module with a narrow bezel structure of this embodiment is substantially the same in structure as the backlight module with a narrow bezel structure of the first embodiment, and the difference is that the connection manner between the iron frame 11 and the rubber frame 12 is different.

Specifically, the inner wall of the rubber frame 12 on the rubber frame 12 is provided with a bearing block 123, the bearing block 123 abuts against the frame 112, and an expansion gap 101 is formed between the bearing block 123 and the bearing frame 122.

Further, the bearing block 123 includes a top surface 1231 and an abutting surface 1232, which are oppositely disposed, the top surface 1231 is disposed near the bearing frame 122, an expansion gap 101 is formed between the top surface 1231 and the bearing frame 122, and the abutting surface 1232 abuts against the frame 112.

The utility model also relates to a vehicle-mounted display device which comprises the backlight source module with the narrow frame structure. In the present embodiment, the on-vehicle display device is, for example, an automobile display screen, an on-vehicle central control, an on-vehicle instrument implementation, an on-vehicle streaming media rearview mirror display, an on-vehicle HUD display, or the like, but not limited thereto.

The present invention is not limited to the specific details of the above-described embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention. The various features described in the foregoing detailed description may be combined in any suitable manner without departing from the scope of the utility model. The utility model is not described in detail in order to avoid unnecessary repetition.

Claims

1. The utility model provides a backlight module of narrow frame structure, characterized in that, includes chase (11) and glues frame (12), chase (11) include bottom plate (111) and connect frame (112) on bottom plate (111), it includes side frame (121) and bears frame (122) to glue frame (12), bear frame (122) and connect perpendicularly in side frame (121), side frame (121) surround the circumference setting of frame (112), side frame (121) with frame (112) are connected, frame (112) are kept away from the side of bottom plate (111) with be formed with expansion clearance (101) that supply optical diaphragm (17) inflation between bearing frame (122).

2. The backlight module with the narrow bezel structure as claimed in claim 1, wherein the outer wall of the bezel (112) is provided with a plurality of connection blocks (13), each connection block (13) is disposed around the circumference of the bezel (112), the end of the side frame (121) away from the carrying frame (122) is provided with a connection groove (102), the connection groove (102) is disposed corresponding to the connection block (13), and the connection block (13) is installed in the connection groove (102) to fixedly connect the rubber frame (12) to the iron frame (11).

3. The backlight module with a narrow bezel structure as claimed in claim 2, wherein the connecting slots (102) are U-shaped slots.

4. The backlight module with a narrow bezel structure as claimed in claim 1, wherein the bezel (112) has a plurality of connecting slots (102), the plastic frame (12) has a connecting block (13) corresponding to the connecting slots (102), and the connecting block (13) is installed in the connecting slots (102) to fixedly connect the plastic frame (12) and the iron frame (11).

5. The backlight module with a narrow bezel structure as claimed in any one of claims 2 to 4, wherein a bearing block (123) is disposed on an inner wall of the rubber frame (12) on the rubber frame (12), the bearing block (123) abuts against the bezel (112), and the expansion gap (101) is formed between the bearing block (123) and the bearing frame (122).

6. The backlight module with a narrow bezel structure as claimed in claim 5, wherein said supporting block (123) comprises a top surface (1231) and an abutting surface (1232), said top surface (1231) is disposed close to the supporting frame (122), said expansion gap (101) is formed between said top surface (1231) and said supporting frame (122), and said abutting surface (1232) abuts against said bezel (112).

7. The backlight module with a narrow bezel structure of claim 6, further comprising a light bar (14), wherein the light bar (14) is fixedly connected to an inner wall of the bezel (112), and the light bar (14) is disposed in a long axis direction of the bezel (112).

8. The backlight module with a narrow bezel structure of claim 7, further comprising a reflective film (15), a light guide plate (16) and an optical film (17), wherein the reflective film (15) is disposed on the bottom plate (111), the light guide plate (16) is disposed on the reflective film (15), and the optical film (17) is disposed on the light guide plate (16).

9. The backlight module with a narrow bezel structure as claimed in claim 8, wherein the backlight module with a narrow bezel structure further comprises a foam adhesive (18), the foam adhesive (18) is fixedly connected to a side of the carrying frame (122) away from the optical film (17), and the foam adhesive (18) is used for buffering and fixing a display screen.

10. A vehicle-mounted display device, characterized by comprising the backlight module with a narrow bezel structure of any one of claims 1 to 9.