CN223229817U - Display module - Google Patents

Abstract

The utility model relates to a display module, which comprises a backlight module and a display panel positioned on the light emitting side of the backlight module, wherein the display panel comprises a binding side positioned on one side of the display panel in a first direction, a flexible circuit board is connected to the binding side in a binding mode, the backlight module comprises a back plate, a main circuit board is arranged on one side, far away from the display panel, of the back plate, the flexible circuit board is bent to the backlight side of the display module so as to be electrically connected with the main circuit board, the back plate comprises a bottom plate, a first side plate and a bending area positioned between the bottom plate and the first side plate, the bottom plate is positioned on the backlight side of the display panel, the bending area enables the first side plate to be positioned on the binding side, and a protection structure is arranged on one side, far away from the center of the bottom plate, of the bending area.

Description

Display module

Technical Field

The utility model relates to the technical field of manufacturing of display products, in particular to a display module.

Background

Along with the rapid development of electronic products and IT industries, the light and thin development trend of NB display products (display modules of notebook computers) has been developed, but the requirements of customers on the strength of the display products are very strict while the requirements are light and thin, so new solutions are required for some new problems occurring in light and thin products and products with high strength requirements, wherein the occurrence of wiring short circuit during assembly becomes a problem to be solved and avoided in product development.

To the wide application of current notebook computer's display module assembly frivolity direction in the display module assembly that leads to aluminium matter backplate, in order to adapt to the high-end narrow frame high strength demand in the IT product, promote product competitiveness, aluminium matter backplate thickness promotes, but when aluminium matter backplate thickness increases, can produce backplate fracture when punching press U rolls over, and then can have the roughness and the burr that the crack causes in the crease region, this burr can scratch green oil FPC's green oil layer when collocating green oil FPC, and then leads to FPC to walk the line and the backplate contact appears the phenomenon of flashing.

Disclosure of utility model

In order to solve the technical problems, the utility model provides a display module, which solves the problem that the bending area of the backboard is cracked to damage a flexible circuit board.

In order to achieve the above purpose, the technical scheme adopted by the embodiment of the utility model is that the display module comprises a backlight module and a display panel positioned on the light emitting side of the backlight module, wherein the display panel comprises a binding side positioned on one side of the display panel in a first direction, the binding side is in binding connection with a flexible circuit board, the backlight module comprises a back plate, one side of the back plate far away from the display panel is provided with a main circuit board, the flexible circuit board is bent to the backlight side of the display module so as to be electrically connected with the main circuit board,

The backboard comprises a bottom plate, a first side plate and a bending area located between the bottom plate and the first side plate, wherein the bottom plate is located on the backlight side of the display panel, the bending area enables the first side plate to be located on the binding side, and a protection structure is arranged on one side, away from the center of the bottom plate, of the bending area.

Optionally, the protection structure is an insulating adhesive layer attached to the back plate, and in a second direction perpendicular to the first direction, the width of the insulating adhesive layer is greater than the width of the flexible circuit board.

Optionally, the thickness of the insulating adhesive layer 4 is 0.03-0.05 mm.

Optionally, the difference between the width of the insulating adhesive layer in the second direction and the width of the flexible circuit board 3 is 2-6 mm.

Optionally, the insulating glue layer includes a first portion located on the bottom plate and a second portion located on the first side plate, where the length of the first portion in the first direction is 10-20 mm.

Optionally, the flexible circuit board comprises a back plate, and is characterized by further comprising a rubber frame surrounding the periphery of the back plate, wherein an adhesive layer is arranged between the rubber frame and the back plate, the rubber frame comprises a first side wall positioned at the binding side, a slot is arranged on one surface of the first side wall, which is far away from the back plate, so that a space for avoiding the flexible circuit board is formed, and the first side wall is reused as the protection structure.

Optionally, the width of the slot in the second direction is greater than the width of the flexible circuit board in the second direction, and the difference between the width of the slot in the second direction and the width of the flexible circuit board in the second direction is 2-6 mm.

Optionally, in a direction perpendicular to the bottom plate, an end face of the first side wall, which is close to one end of the bottom plate, is flush with a face of the bottom plate, which is far away from the display panel.

Optionally, the rubber frame further includes a bottom wall located on the bottom plate, in the first direction, the length of the bottom wall is 5-10 mm, and the thickness of the bottom wall is 0.3-0.5 mm.

Optionally, the display panel further comprises a light bar located on one side, close to the display panel, of the bottom plate, wherein the light bar comprises a light bar flexible circuit board and light beads located on the light bar flexible circuit board, a first opening is formed in the first side plate, a second opening is formed in the rubber frame, and the first opening corresponds to the second opening and is used for the light bar flexible circuit board to penetrate through.

Optionally, the thickness of the back plate is 0.4-0.5 mm.

The flexible circuit board has the beneficial effects that the protection structure is arranged on one side of the bending region of the backboard, which is far away from the center of the backboard, so that the flexible circuit board is prevented from being damaged.

Drawings

Fig. 1 shows a schematic view of a backlight side of a display module according to an embodiment of the utility model;

FIG. 2 is a schematic diagram of a display module according to an embodiment of the utility model;

FIG. 3 shows a partial schematic view of a back plate in an embodiment of the utility model;

FIG. 4 is a schematic diagram of a backlight side of a display module according to an embodiment of the utility model;

FIG. 5 is a schematic diagram of a display module according to an embodiment of the utility model;

FIG. 6 is a schematic diagram of a backlight side of a display module according to an embodiment of the utility model;

FIG. 7 is a schematic side view of a display module according to an embodiment of the utility model;

FIG. 8 is a schematic diagram of a display module according to an embodiment of the utility model;

FIG. 9 is a schematic diagram of a display module according to an embodiment of the utility model;

FIG. 10 shows a partial schematic view of a back plate in an embodiment of the utility model.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present disclosure more apparent, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. It will be apparent that the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments, which can be made by one of ordinary skill in the art without the need for inventive faculty, are within the scope of the present disclosure, based on the described embodiments of the present disclosure.

Unless defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and the like, as used in this disclosure, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, the terms "a," "an," or "the" and similar terms do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.

As used in the embodiments of the present disclosure, the terms "parallel", "perpendicular" and "identical" are intended to include the strict meaning of "parallel", "perpendicular", "identical" and the like, as well as the terms "substantially parallel", "substantially perpendicular", "substantially identical" and the like, including certain tolerances, and are intended to be within the scope of acceptable deviations from the specified values as determined by one of ordinary skill in the art, given the measurement and tolerances associated with the specified amounts of measurement (e.g., limitations of the measurement system). For example, "approximately" can mean within one or more standard deviations, or within 3% or 5% of the value.

In order to realize the light and thin performance of NB display products (display modules of notebook computers), an aluminum back plate is adopted in the display module, and the thickness of the back plate is increased when the overall strength of the display module is required to be improved. Also, since COG Mura (a phenomenon of non-uniformity of visual effect due to pixel difference of a partial region occurring near a driving chip in a liquid crystal display) is heavy, a green oil FPC design with lower resilience is applied in a narrow frame product. But when aluminium matter backplate thickness increases, can produce the backplate fracture when punching press U rolls over, and then can have the roughness and even the burr that the crack causes in the crease region, when collocating green oil FPC, can scratch green oil FPC's green oil layer, leads to walking line and backplate contact to appear the short circuit, shows when not squeezing normally, is showing as the flashing screen promptly.

Referring to fig. 1-7, in order to solve the above problems, the present application provides a display module, which solves the problem that the crack generated in the bending area of the back plate 1 scratches the FPC due to the increased thickness of the back plate 1.

Specifically, the present embodiment provides a display module, including backlight module and display panel, the backlight module is used for providing the light source to display panel 2, display panel 2 includes in the first direction (refer to the X direction in fig. 1) be located the binding side of one side of display panel 2, the binding side binds and is connected with flexible line way board 3.

The backlight module comprises a back plate 1, a main circuit board 10 is arranged on one side, away from the display panel 2, of the back plate 1, and the flexible circuit board 3 is bent to the backlight side of the display module so as to be electrically connected with the main circuit board 10.

The back plate 1 comprises a bottom plate 11, a first side plate 12 and a bending area between the bottom plate 11 and the first side plate 12, wherein the bottom plate 11 is positioned on the backlight side of the display panel 2, the bending area enables the first side plate 12 to be positioned on the binding side, and a protection structure is arranged on one side of the bending area away from the center of the bottom plate 11.

The binding side of the display panel 2 is connected with a flexible circuit board 3, and the flexible circuit board 3 is bent to the backlight side of the display panel 2 and connected with a main circuit board 10. In order to increase the softness of the single-layer bending area at the binding lower end of the flexible circuit board 3 and reduce the rebound force of the flexible circuit board 3 after bending, the insulating protection layer of the bending area of the FPC is made of green oil, namely green oil FPC. The insulating protection layer also can adopt the PI material, green oil FPC compares in adopting the PI material as insulating protection layer's FPC, have the characteristics that flexibility is good, have fine effect to solving L0 light leak, so green oil FPC also is the requisite design of light leak high strength product, but compare in adopting the PI material as insulating protection layer's FPC, green oil FPC has the characteristics of easier fish tail, buckle to the back light side of backplate to FPC, and in the product of being located backplate back light side's main circuit board, after the fish tail appears green oil fish tail, can lead to the line on the FPC to appear the short circuit with backplate 1, for example, the short circuit will appear after the functional line Lock line on the FPC is by the fish tail. The Lock line is used for transmitting the Lock signal and the level signal, feeding back the S-IC state, and stopping outputting Data by the T-con after the Lock is pulled down, so that a black screen is caused.

To solve the above problems, in this embodiment, a protection structure is disposed in the bending area of the back plate 1, that is, a protection structure is disposed between the flexible circuit board 3 and the back plate 1, so that the flexible circuit board 3 is prevented from being scratched, and the flexible circuit board 3 is protected.

It should be noted that, the back plate 1 includes a bottom plate 11, and side plates are surrounded around the bottom plate 11 to form an accommodating space for accommodating the backlight assembly, where the first side plate 12 is correspondingly disposed on the binding side. In some embodiments, on the binding side, the first side plate 12 is bent in a direction approaching to the center of the bottom plate 11 to form a first top plate 13, and the first top plate 13, the first side plate 12, and the bottom plate 11 form a U-shaped structure. The first top plate 13 may play a role in supporting the display panel 2, a bending region between the first top plate 13 and the first side plate 12 may also have a crack, but the bending region between the first top plate 13 and the first side plate 12 corresponds to a bending region of the flexible circuit board 3, a bending radian of the flexible circuit board 3 may avoid the bending region between the first top plate 13 and the first side plate 12, and PANEL SPACER (interval protection layer 5) is further disposed on the first top plate 13, the interval protection layer 5 completely covers the first top plate 13 and also plays a role in protecting the flexible circuit board 3, so that a position of scratching the flexible circuit board 3 is mainly in the bending region between the bottom plate 11 and the first side plate 12.

The thickness of the back plate 1 in this embodiment is 0.4-0.5 mm.

Referring to fig. 1-3, fig. 2 is a schematic cross-sectional view of A-A of fig. 1, and in an exemplary embodiment, the protective structure is an insulating adhesive layer 4 attached to the back plate 1. The insulating adhesive layer 4 may be an insulating adhesive tape with an adhesive layer on one side, and a base material layer of the insulating adhesive tape is made of PET (Polyethylene terephthalate ) material.

In an exemplary embodiment, the thickness of the insulating glue layer 4 is 0.03-0.05 mm.

In an exemplary embodiment, the insulating adhesive layer 4 is attached to the bending area of the back plate and has an L-shaped structure, the insulating adhesive layer 4 includes a first portion located on the bottom plate 11 of the back plate and a second portion located on the first side plate 12 of the back plate 1, and the length of the first portion in the first direction is 10-20 mm, so as to effectively avoid damage caused by direct contact between the flexible circuit board 3 and the back plate 1.

In an exemplary embodiment, in a second direction (refer to the Y direction in fig. 1) perpendicular to the first direction, the width of the insulating adhesive layer 4 is greater than the width of the flexible circuit board 3, and when the flexible circuit board 3 is in a bent state, both ends of the insulating adhesive layer 4 in the second direction are exposed to the flexible circuit board 3.

Referring to fig. 3, a portion of the base plate 11 and a portion of the first side plate 12 are shown in fig. 3, and in the second direction, the flexible wiring board 3 is located in the middle region of the insulating adhesive layer 4.

By adopting the above scheme, when the flexible circuit board 3 is in a bending state, the orthographic projection of the first area, which is overlapped on the insulating adhesive layer 4, of the flexible circuit board 3 on the insulating adhesive layer 4 is completely positioned on the insulating adhesive layer 4, so that the flexible circuit board 3 and the backboard 1 are effectively isolated, and the flexible circuit board 3 is prevented from being scratched by cracks of the bending area.

The difference between the width of the insulating adhesive layer 4 in the second direction and the width of the flexible circuit board 3 is, but not limited to, 2-6 mm.

In an exemplary embodiment, in the second direction, the insulating glue layer 4 has a first central line, the flexible circuit board 3 has a second central line, and a midpoint of the first central line corresponds to a midpoint of the second central line, that is, a orthographic projection of a midpoint of the second central line on the insulating glue layer 4 coincides with a midpoint of the first central line, so that both ends of the insulating glue layer 4 in the second direction are effectively ensured to be exposed to the flexible circuit board 3.

In an exemplary embodiment, in the second direction, at least one flexible circuit board 3 is bound and connected to the binding side of the display panel 2, at least one insulating glue layer 4 is disposed in the bending area of the back plate 1, and at least one insulating glue layer 4 is disposed in a one-to-one correspondence with at least one flexible circuit board 3.

Referring to fig. 4-10, fig. 5 is a schematic cross-sectional view of B-B of fig. 4, in an exemplary embodiment, the backlight module further includes a plastic frame 9 surrounding the periphery of the back plate 1, the plastic frame 9 includes a first side wall 91 located at the binding side, a slot 911 is disposed on a surface of the first side wall 91 away from the back plate 1 to form a space for avoiding the flexible circuit board 3, and the first side wall 91 is multiplexed into the protection structure, so that the back plate 1 and the flexible circuit board 3 are effectively isolated, and the flexible circuit board 3 is prevented from being scratched by a crack on the back plate 1.

In an exemplary embodiment, in the second direction perpendicular to the first direction, the width of the slot 911 is greater than the width of the flexible circuit board 3, so as to effectively prevent the flexible circuit board 3 from being scratched by the back plate 1.

In fig. 10, a part of the first side wall 91 and a part of the bottom wall 92 are shown, and in the second direction, the width of the flexible wiring board is smaller than the width of the slot 911, and the flexible wiring board 3 is located in the middle area of the slot 911.

The difference between the width of the slot 911 in the second direction and the width of the flexible circuit board 3 in the second direction is, but not limited to, 2-6 mm.

Illustratively, when the flexible circuit board 3 is in the bent state, the slot 911 has a third center line extending along the second direction, the flexible circuit board 3 has a second center line extending along the second direction, and an orthographic projection of a midpoint of the second center line on the slot 911 coincides with a midpoint of the third center line, so as to effectively ensure that the flexible circuit board 3 is located in the slot 911.

In an exemplary embodiment, an end surface of the first sidewall 91 near one end of the bottom plate 11 is flush with a surface of the bottom plate 11 remote from the display panel 2. The flexible circuit board 3 is effectively prevented from being contacted with the bending area, and the flexible circuit board 3 is prevented from being scratched.

It should be noted that, referring to fig. 4, the adhesive layer 20 is connected between the frame and the back plate 1 through the adhesive layer 20, and the adhesive layer 20 has a certain thickness, so in fig. 5, an end of the first side wall 91 away from the display panel is exposed to the first side plate 12, that is, a length of the first side wall 91 is greater than a length of the first side plate 12.

In an exemplary embodiment, the glue frame includes a bottom wall 92 connected to a surface of the bottom plate 11 away from the display panel 2, and the length of the bottom wall 92 in the first direction is 5-10 mm, but is not limited thereto.

Illustratively, the rubber frame is a unitary structure, and includes a bottom wall 92 and side walls surrounding the bottom wall 92, where the side walls include the first side wall 91 located on the binding side. The material of the rubber frame may be an insulating PP material, but is not limited thereto.

The thickness of the bottom wall 92 is, but not limited to, 0.3-0.5 mm.

Illustratively, the base plate 11 is provided with a main circuit board 10 on a side away from the display panel 2, and in the second direction, the width of the bottom wall 92 coincides with the width of the main circuit board 10, so that the flexible circuit board 3 is protected from interference during system assembly.

In an exemplary embodiment, the adhesive frame and the back plate 1 are fixedly connected through an adhesive layer.

The setting of glue frame, when avoiding flexible circuit board 3 by backplate 1 scratch, can also effectually avoid flexible circuit board 3 is caused the damage by the impact force of side.

In an exemplary embodiment, the backlight module further includes a Light bar 6 located on a side of the bottom plate 11 near the display panel 2, where the Light bar 6 includes a Light bar flexible circuit board 100 and a Light bead located on the Light bar flexible circuit board 100, and the Light bead may be, for example, a Light-Emitting Diode (LED). The first side plate 12 is provided with a first opening, the plastic frame is provided with a second opening 912, and the first opening corresponds to the second opening 912, so that the circuit board of the light bar 6 can pass through and be connected with the main circuit board 10.

The backlight module in this embodiment is a direct type backlight module, the light bar 6 is located on the bottom plate 11, and the light emitting surface of the light bead is disposed on the bottom surface of the light guide plate 7.

In an exemplary embodiment, the backlight module includes a light guide plate 7 disposed on the bottom plate 11, and an optical film 8 is disposed on a light emitting side of the light guide plate 7.

The optical film material 8 may include a multilayer structure, for example, an optical film sheet including a diffusion sheet and a prism film sequentially laminated on the light guide plate 7. The diffuser is used for dispersing light emitted from the front surface of the light guide plate 7, so that the light is uniformly emitted to the display panel 2 to improve the brightness uniformity of the display panel 2, and the prism film can concentrate the light emitted from the diffuser to each angle onto an axial angle (front view angle of the display panel 2) to improve the axial brightness of the display panel 2.

For example, two prism films may be stacked on the diffusion sheet, and the extending directions of the prisms on the two prism films may be inconsistent in the plane direction of the display panel 2, for example, the extending directions of the prisms on the two prism films are perpendicular to each other, so as to collect light from different directions, thereby improving the light collecting effect of the prism films and enhancing the axial brightness of the display panel 2.

The display module provided by the embodiment can be applied to any product or component with a display function, such as a liquid crystal television, a liquid crystal display, a digital photo frame, a mobile phone, a tablet personal computer and the like.

The following points need to be described:

(1) The drawings of the embodiments of the present disclosure relate only to the structures related to the embodiments of the present disclosure, and other structures may refer to the general design.

(2) In the drawings for describing embodiments of the present disclosure, the thickness of layers or regions is exaggerated or reduced for clarity, i.e., the drawings are not drawn to actual scale. It will be understood that when an element such as a layer, film, region or substrate is referred to as being "on" or "under" another element, it can be "directly on" or "under" the other element or intervening elements may be present.

(3) The embodiments of the present disclosure and features in the embodiments may be combined with each other to arrive at a new embodiment without conflict.

It is to be understood that the above embodiments are merely illustrative of the application of the principles of the present utility model, but not in limitation thereof. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the utility model, and are also considered to be within the scope of the utility model.

Claims (11)

1. The display module comprises a backlight module and a display panel positioned on the light emitting side of the backlight module, wherein the display panel comprises a binding side positioned on one side of the display panel in a first direction, the binding side is connected with a flexible circuit board in a binding way, the backlight module comprises a back plate, a main circuit board is arranged on one side of the back plate away from the display panel, and the flexible circuit board is bent to the backlight side of the display module so as to be electrically connected with the main circuit board,

The backboard comprises a bottom plate, a first side plate and a bending area located between the bottom plate and the first side plate, wherein the bottom plate is located on the backlight side of the display panel, the bending area enables the first side plate to be located on the binding side, and a protection structure is arranged on one side, away from the center of the bottom plate, of the bending area.

2. The display module of claim 1, wherein the protective structure is an insulating adhesive layer attached to the back plate, and a width of the insulating adhesive layer is greater than a width of the flexible circuit board in a second direction perpendicular to the first direction.

3. The display module of claim 2, wherein the thickness of the insulating adhesive layer is 0.03-0.05 mm.

4. The display module according to claim 2, wherein a difference between a width of the insulating adhesive layer in the second direction and a width of the flexible circuit board is 2-6 mm.

5. The display module assembly of claim 2, wherein the insulating glue layer comprises a first portion located on the bottom plate and a second portion located on the first side plate, and the length of the first portion in the first direction is 10-20 mm.

6. The display module assembly of claim 1, further comprising a glue frame surrounding the periphery of the back plate, wherein an adhesive layer is disposed between the glue frame and the back plate, the glue frame comprises a first side wall located at the binding side, a slot is disposed on a surface, away from the back plate, of the first side wall, a space for avoiding the flexible circuit board is formed, and the first side wall is reused as the protection structure.

7. The display module of claim 6, wherein a width of the slot in a second direction perpendicular to the first direction is greater than a width of the flexible circuit board in the second direction, and a difference between the width of the slot in the second direction and the width of the flexible circuit board in the second direction is 2-6 mm.

8. The display module of claim 6, wherein an end surface of the first sidewall near an end of the bottom plate is flush with a surface of the bottom plate away from the display panel in a direction perpendicular to the bottom plate.

9. The display module assembly of claim 6, wherein the frame further comprises a bottom wall on the bottom plate, the bottom wall has a length of 5-10 mm in the first direction, and the bottom wall has a thickness of 0.3-0.5 mm.

10. The display module assembly of claim 6, further comprising a light bar positioned on a side of the bottom plate adjacent to the display panel, the light bar comprising a light bar flexible circuit board and light beads positioned on the light bar flexible circuit board, a first opening being provided on the first side plate, a second opening being provided on the glue frame, the first opening corresponding to the second opening for the light bar flexible circuit board to pass through.

11. The display module of claim 1, wherein the thickness of the back plate is 0.4-0.5 mm.