WO2019010976A1

WO2019010976A1 - Backlight module and display device

Info

Publication number: WO2019010976A1
Application number: PCT/CN2018/076321
Authority: WO
Inventors: 胡小龙; 韩建国
Original assignee: 青岛海信电器股份有限公司
Priority date: 2017-07-12
Filing date: 2018-02-11
Publication date: 2019-01-17
Also published as: CN107153303A; CN107153303B

Abstract

A backlight module and a display device. The backlight module comprises: a fixing element; a back panel, the back panel comprising a sidewall (221) and a supporting wall (222) perpendicular to each other, the sidewall (221) being provided with an opening (2211), and a first fixing hole (2221) being provided on the outer surface of the supporting wall (222); a front housing (110), a rear frame part of the front housing (110) comprising a first bent part (2111), a second bent part (2112), and a third bent part (2113), and the first bent part (2111), the second bent part (2112), and the third bent part (2113) being stepped in the direction facing the inner side of a U shape, where the third bent part (2113) is provided with a second fixing hole (2114). The third bent part (2113) is introduced into the opening (2211). The fixing element (230) is fixed in the first fixing hole (2221) on the outer surface of the supporting wall (222) and in the second fixing hole (2114) on the third bent part (2113). In addition, the display device comprises the backlight module, a panel, and an optical film set. The backlight module and the display device improve on the problem of a step difference and protruding screw heads that is present when a conventional front housing and a back panel are fixed, thus reducing the thickness of the module and satisfying user demand on the appearance of the display device.

Description

Backlight module and display device

The present application claims priority to Chinese Patent Application No. JP-A No. No. No. No. No. No. No. No. No. No. No. No. No. No. No. No. in.

Technical field

The present disclosure relates to the field of display, and in particular, to a backlight module and a display device.

Background technique

In the prior art display device, the conventional metal front case is fixed as shown in FIG. 1. The front case 110 is U-shaped and wrapped on the outer side of the back plate 120, and then locked by screws 130.

Summary of the invention

A first aspect of the embodiments of the present disclosure provides a backlight module, including:

Fastener;

a back plate, the back plate includes mutually perpendicular side walls and a support wall, the side wall is provided with an opening, and the outer surface of the support wall is provided with a first fixing hole;

The front case includes a front frame portion, a side frame portion perpendicular to the front frame portion, and a rear frame portion, the front frame portion being parallel to the support wall, the side frame portion being parallel to the support wall, The frame portion includes a first bent portion, a second bent portion, and a third bent portion, wherein the first bent portion, the second bent portion, and the third bent portion are in a direction toward the inner side of the backlight module Stepped, wherein the third bending portion is provided with a second fixing hole;

The third bent portion enters the opening, the fixing member is locked to the hole on the outer surface of the support wall and the first fixing on the third bent portion a hole and the second fixing hole.

A second aspect of the embodiments of the present disclosure provides a display device, which includes the backlight module provided by the first aspect of the embodiments of the present disclosure, and further includes:

a front panel portion of the front case is disposed at a front side edge of the panel;

An optical film set disposed between the panel and the support wall.

DRAWINGS

The accompanying drawings, which are incorporated in the specification

In order to more clearly illustrate the embodiments of the present disclosure or the solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description are Some embodiments of the present disclosure may also be used to obtain other drawings based on these drawings without departing from the prior art.

1 is a schematic view of a backlight module in the prior art;

2 is a schematic structural view of a front case of a backlight module according to an embodiment of the present disclosure;

3 is a partial structural schematic view of a backplane of a backlight module according to an embodiment of the present disclosure;

4 is a schematic diagram of a backlight module provided in an embodiment of the present disclosure;

FIG. 5 is a schematic structural diagram of a display device provided in an embodiment of the present disclosure.

Reference mark:

110-front case 120-back plate 130-screw 140-break

2111 - first bending portion 2112 - second bending portion 2113 - third bending portion 2114 - second fixing hole

212-front frame 213-side frame 221-side wall 2211-opening

222-support wall 2221-first fixing hole 230-fixing piece 240-panel

250-optical diaphragm set

Detailed ways

The technical solutions in the embodiments of the present disclosure are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present disclosure. It is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present disclosure without departing from the inventive scope are the scope of the disclosure.

In the description of the present disclosure, the terms “upper”, “lower”, “inside”, “outside”, “horizontal”, etc., indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings. The present disclosure and the simplifications of the disclosure are merely intended to be illustrative, and are not intended to be a limitation of the invention. The terms "first aspect" and "second aspect" are used for descriptive purposes only, and are not to be construed as indicating or implying a relative importance or implicitly indicating or implied, including one or more such technical features. In the description of the present disclosure, "a plurality of" means two or more unless otherwise stated.

In the display device of the prior art, the conventional metal front case fixing method as shown in FIG. 1 has the following problem, and the occurrence of the gap 140 at the contact surface of the rear frame portion of the front case and the back plate cannot be avoided. Moreover, if a stainless steel front case is used, a countersunk hole cannot be made on the front case to place the screw head, so that the screw head floats on the surface of the front case, and the protruding hand cannot be avoided.

Embodiments of the present disclosure provide a backlight module including a fixing member, a back plate, and a front case. Hereinafter, the backlight module provided by the embodiment of the present disclosure will be described with reference to FIGS. 2-5. 2 is a schematic structural view of a front panel of a backlight module according to an embodiment of the present disclosure, and FIG. 3 is a partial structural diagram of a back panel of a backlight module according to an embodiment of the present disclosure, and FIG. 4 is a schematic embodiment of the present disclosure. A schematic diagram of a backlight module provided in the middle.

First, the x, y, and z directions used in the description of the embodiments of the present disclosure will be described with reference to FIG. 3. As shown in FIG. 3, the back plate includes a side wall 221 and a support wall 222, and the side wall 221 and the support wall 222 are perpendicular to each other. In the present disclosure, a direction perpendicular to the side wall 221 and extending from the side wall 221 along the support wall 222 is defined as an x direction, and a direction perpendicular to the support wall 222 and extending from the support wall 222 along the side wall 221 is defined as a y direction The direction perpendicular to the directions x and y is defined as the z direction. The corresponding directions are also marked in Figures 2 and 4 for illustration. It should be noted that the viewing angle of the backplane shown in FIG. 3 is substantially the same as the viewing angle of the backplane in the backlight module shown in FIG. 4. However, the viewing angle of FIG. 2 is different from the viewing angle of FIG. 4 to more clearly show the structure of the front case. The front case shown in FIG. 2 can be assembled with the back plate shown in FIG. 3 by the fixing member 230 after being rotated by 180° in the x direction.

As shown in FIG. 2, the front case includes a front frame portion 212, a side frame portion 213, and a rear frame portion, the front case being substantially U-shaped. The rear frame portion of the front case includes a first bent portion 2111, a second bent portion 2112, and a third bent portion 2113. The first bent portion 2111, the second bent portion 2112, and the third bent portion 2113 are stepped in a direction toward the inner side of the U-shape. The front frame portion 212 is provided in parallel with the first bent portion 2111, and is connected to the first bent portion 2111 through the side frame portion 213. The side frame portion 213 is perpendicular to the front frame portion 212 and the first bent portion 2111. The third bending portion 2113 is provided with a second fixing hole 2114 whose aperture size matches the fixing member. In some embodiments, the number of the third bent portions 2113 is plural, and the plurality of third bent portions 2113 are spaced apart.

In some embodiments, the front frame portion 212 is used to crimp the liquid crystal panel of the display device, and the side frame portion 213 can serve as a side surface of the liquid crystal display device. The distance between the first bent portion 2111 and the front frame portion 212 is greater than the third portion. The distance between the bent portion and the front frame portion 212.

As shown in FIG. 3, the back plate includes a side wall 221 and a supporting wall 222, and the side wall 221 and the supporting wall 222 are perpendicular to each other, wherein the side wall 221 is provided with an opening 2211. The opening 2211 is configured such that the third bent portion 2112 can pass through the opening 2211. Specifically, the length of the opening 2211 in the z direction is greater than or equal to the length of the third bending portion 2113 in the z direction, and the length of the opening 2211 in the y direction is greater than or equal to the third bending portion 2113 in the y direction. The length, that is, the thickness of the third bent portion 2113. The length of the opening 2211 in the x direction is less than or equal to the minimum distance from the edge of the second fixing hole 2114 of the third bending portion 2113 to the second bending portion 2112. In some embodiments, the number of openings 2211 is a plurality and is the same as the number of third bends 2113 of the front case. The support wall 222 of the backboard is provided with a first fixing hole 2221, and the apertures of the first fixing hole and the second fixing hole are matched with the fixing member.

A cross section of a backlight module provided by an embodiment of the present disclosure is shown in FIG. 4 . The front case shown in Fig. 2 is rotated by 180 in the x direction and the third bent portion 2113 of the rear frame of the front case is inserted into the opening 2211 of the side wall 221 of the backing plate shown in Fig. 3 in the x direction. Further, the axis of the second fixing hole 2114 on the third bending portion 2113 coincides with the axis of the first fixing hole 2221 on the supporting wall 222 of the back plate, and the fixing member 230 is from the outer surface of the supporting wall 222 of the back plate. The first fixing hole 2221 of the supporting wall 222 and the second fixing hole 2114 of the third bending portion 2113 of the front case are inserted to lock the back plate and the front case. Further, the outer surface of the first bent portion 2111 of the rear frame of the front case is flush with the outer surface of the back plate support wall 222.

The technical effect of the embodiment of the present disclosure will be described below with reference to FIG. 4. As shown in FIG. 4, the fixing member 230 for fixing is locked on the hole of the supporting wall 222 of the backboard and the third bending portion 2113 of the front casing. In some holes, in some embodiments, the hole in the back plate supporting wall 222 can be set as a countersunk hole to achieve the effect of burying the head of the fixing member, so that the back of the backlight module has no abrupt hand feeling. In addition, the side wall 221 of the backboard is provided with an opening, and the front shell is provided with a first bent portion 2111, a second bent portion 2112, a third bent portion 2113, and the first bent portion 2111 and the second bent portion. 2112, the third bent portion 2113 is stepped in a direction toward the inner side of the U-shape, and the third bent portion 2113 enters into the opening of the side wall 221 of the back plate, so that the front case is hidden in the back plate, thereby improving the present In the technology, the problem of the difference between the front cover and the back plate surface is achieved, so that the back surface is integrated and flushed, and the module is thinned, which satisfies the user's appearance requirements for the display device and has high practicability.

The embodiment of the present disclosure further provides a display device, as shown in FIG. Fig. 5 is a view showing the overall structure of the display device in this embodiment. The display device includes the display module provided by the foregoing embodiment, and further includes a liquid crystal panel 240 and an optical film set 250. The optical film group 250 is disposed under the liquid crystal panel 240, and the front frame portion 212 of the front case is disposed at the front side edge of the liquid crystal panel 240, and is crimped to the liquid crystal panel 240 of the display device.

Other components of the backlight module and display device in the art are well known to those skilled in the art, and reference may be made to the prior art in the art, and will not be described in detail herein.

The vertical and parallel in the present application are strictly parallel in a mathematical sense, and a certain error is allowed, and the error is only required to be less than 10%.

It should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure, and are not intended to be limiting; although the present disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the essence of the corresponding technical solutions. The scope of the technical solution.

Claims

A backlight module comprising:

Fastener;

a back plate, the back plate includes mutually perpendicular side walls and a support wall, the side wall is provided with an opening, and the support wall is provided with a first fixing hole;

The front case includes a front frame portion, a side frame portion perpendicular to the front frame portion, and a rear frame portion, the front frame portion being parallel to the support wall, the side frame portion being parallel to the support wall, The rear frame portion includes a first bent portion, a second bent portion, and a third bent portion, and the first bent portion, the second bent portion, and the third bent portion are oriented toward the inner side of the backlight module a stepped shape, wherein the third bending portion is provided with a second fixing hole;

The third bent portion enters the opening, and the fixing member is locked in the first fixing hole and the second fixing hole of the supporting wall.
The backlight module of claim 1, wherein an outer surface of the first bent portion is flush with an outer surface of the support wall.
The backlight module of claim 1 , wherein a length of the opening in the third direction is greater than or equal to a length of the third bent portion in the third direction, wherein the third direction is first The direction is perpendicular to the second direction, the first direction being a direction perpendicular to the sidewall and extending from the sidewall along the support wall, the second direction being perpendicular to the support wall and from the A direction in which the support wall extends along the side wall.
The backlight module of claim 1, wherein a length of the opening in the second direction is greater than or equal to a length of the third bent portion in the second direction, wherein the second direction is perpendicular to The support wall and a direction extending from the support wall along the side wall.
The backlight module of claim 1, wherein the number of the third bent portions is plural, and the plurality of third bent portions are spaced apart.
The backlight module of claim 1, wherein the number of the openings is plural, and the number of the openings is the same as the number of the third bent portions.
The backlight module of claim 1, wherein the first fixing hole and the second fixing hole have aperture sizes that match the fixing member.
A display device comprising the backlight module of claim 1, further comprising:

a front panel portion of the front case is disposed at a front side edge of the panel;

An optical film set disposed between the panel and the support wall.