TWM550833U - Backlight module and display device - Google Patents

Abstract

A backlight module is provided, including a housing, a light guide plate, a light source, and a frame. The housing has a first wall, a second wall connected to the first wall, a first guiding slot formed on the first wall, and a second guiding slot formed on the second wall. The first guiding slot has a first guiding portion and a first extending portion, wherein a first reflex angle is formed therebetween. The second guiding slot has a second guiding portion and a second extending portion, wherein a second reflex angle is formed therebetween. The frame has a plurality of protrusions. When the housing is engaged with the frame, each of the protrusions is extended through the first extending portion or the second extending portion.

Description

Backlight module and display device

This creation is about a backlight module. More specifically, the present invention relates to a backlight module that provides a good fixing strength to a casing and a frame.

The Backlight Module (BLM) is one of the important components of the display device. Since the display panel (for example, the liquid crystal display panel) in the display device does not emit light by itself, it is necessary to project light through the light source of the backlight module to achieve the function of display.

Generally, when the backlight module is assembled, the housing and the frame are usually combined by means of a hook, so that scraping is often caused by friction during handling or movement. When the scraping debris falls on a place where it is difficult to remove, it is easy to cause the assembly to be inaccurate or to scratch other components. Furthermore, when an external force is applied, it is also easy to separate the two due to the falling off of the hook.

In order to solve the above problems, the present invention provides a backlight module including a casing, a light guide plate, a light source, and a frame. The housing has a first sidewall, a second sidewall connecting the first sidewall, a first guiding groove formed on the first sidewall, and a second guiding groove formed on the second sidewall. First A guiding groove has a first guiding section and a first extending section, wherein a first superior angle is formed between the first guiding section and the first extending section. The second guiding groove has a second guiding section and a second extending section, wherein a second superior angle is formed between the second guiding section and the second extending section. The frame has a plurality of protrusions that pass through the first extension portion and the second extension portion, respectively, when the housing is coupled to the frame.

In an embodiment of the present invention, the first sidewall has a first top surface, and the second sidewall has a second top surface, wherein the first guiding segment is connected to the first top surface, and the second guiding segment is connected Two top faces.

In an embodiment of the present invention, the first side wall and the second side wall are connected to each other at a connecting position, the first extending portion extends from the first guiding portion toward the connecting position, and the second extending portion is guided from the second The segment extends toward the connection position.

In an embodiment of the present invention, the first sidewall and the second sidewall are connected to each other at a connection position, the first extension portion extends from the first guiding segment toward the direction away from the connection position, and the second extension portion The two guiding segments extend in a direction away from the connecting position.

In an embodiment of the present invention, the first side wall and the second side wall are connected to each other at a connecting position, the first extending portion extends from the first guiding portion toward the connecting position, and the second extending portion is from the second The guiding section extends in a direction away from the connection position.

In an embodiment of the present invention, the first preferred angle is between 220° and 270°, and the second preferred angle is between 220° and 270°.

In an embodiment of the present invention, each of the protrusions has a first section and a second section, wherein when the housing is coupled to the frame, the first sections of the protrusions respectively pass through the first And extending the segment portion and the second extension portion, and the second portions of the protrusions respectively protrude from the first sidewall and the second sidewall.

In an embodiment of the present invention, the diameter of the first segment is less than or equal to the width of the first channel, the diameter of the first segment is less than or equal to the width of the second channel, and the diameter of the second segment is greater than the first channel. The width of the groove, and the diameter of the second section is greater than the width of the second channel.

In an embodiment of the present invention, the thickness of the protrusion is substantially twice the thickness of the first side wall, and the thickness of the protrusion is approximately twice the thickness of the second side wall.

In an embodiment of the present invention, the aforementioned frame has flexibility.

In an embodiment of the present invention, the housing is formed of a rigid material.

The present invention further provides a display device, including the foregoing backlight module and a display panel, wherein the display panel is disposed on the frame, and the frame is located between the light guide plate and the display panel.

100‧‧‧shell

110‧‧‧First side wall

111‧‧‧First channel

111a‧‧‧First guiding section

111b‧‧‧First Extension

112‧‧‧ first top surface

120‧‧‧ second side wall

121‧‧‧Second guiding channel

121a‧‧‧Second guiding section

121b‧‧‧Second extension

122‧‧‧Second top

130‧‧‧floor

200‧‧‧Frame

210‧‧‧ body

212‧‧‧ outer surface

213‧‧‧ corner

220a‧‧‧ bump

221a‧‧‧First section

222a‧‧‧second section

220b‧‧‧ bump

221b‧‧‧ first section

222b‧‧‧second section

300‧‧‧Light source

400‧‧‧reflecting elements

500‧‧‧Light guide plate

600‧‧‧Optical diaphragm module

C‧‧‧ Connection location

D‧‧‧ display panel

R‧‧‧ accommodating space

α‧‧‧First good angle

Β‧‧‧second best angle

Fig. 1 is an exploded view showing a backlight module of an embodiment of the present invention.

Figure 2 is a partial schematic view showing the housing of an embodiment of the present invention.

Fig. 3A is a partial schematic view showing the framework of an embodiment of the present creation.

3B and 3C are cross-sectional views showing projections on the frame shown in Fig. 3A.

Fig. 4A is a schematic view showing the combination of the frame and the casing in an embodiment of the present creation.

4B and 4C are cross-sectional views showing a backlight module in an embodiment of the present invention.

Fig. 5A is a schematic view showing the combination of the frame and the casing in another embodiment of the present creation.

Fig. 5B is a schematic view showing the combination of the frame and the casing in another embodiment of the present creation.

Fig. 6 is a view showing a display device of an embodiment of the present invention.

Hereinafter, a backlight module of the present embodiment and a display device having the foregoing backlight module will be described. However, it will be readily appreciated that the present creative embodiment provides many suitable creative concepts and can be implemented in a wide variety of specific contexts. The specific embodiments disclosed are merely illustrative of the use of the present invention in a particular way, and are not intended to limit the scope of the present invention.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning meaning It will be understood that these terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with the relevant art and the context or context of the present disclosure, and should not be in an idealized or overly formal manner. Interpretation, unless specifically defined herein.

First, please refer to FIG. 1 , which is a backlight module main body according to an embodiment of the present invention. A housing 100, a frame 200, a light source 300, a reflective element 400, a light guide plate 500, and an optical film module 600 are included, wherein the light source 300, the reflective element 400, the light guide plate 500, and the optical film mold are included. The set 600 is disposed between the housing 100 and the frame 200. The foregoing backlight module can be applied to an electronic device having a display device, such as a television, a computer screen, a home appliance screen, a wearable electronic device, an in-vehicle display device, a mobile phone, or a tablet.

As shown in FIGS. 1 and 2, the housing 100 includes two first side walls 110, two second side walls 120, and a bottom plate 130. The bottom plate 130 has a rectangular structure, and the first side wall 110 and the second side wall 120 are connected to the bottom plate 130, and the two first side walls 110 are respectively located on opposite sides of the bottom plate 130, and the two second side walls 120 are respectively located on opposite sides of the bottom plate 130. .

As shown in FIG. 2, the first side wall 110 and the second side wall 120 are connected to each other at a connecting position C, and the first side wall 110 and the second side wall 120 are respectively formed with a first guiding groove 111 and a second guiding groove 121. . The first guiding slot 111 has a first guiding segment portion 111a and a first extending segment portion 111b, and the second guiding slot 121 has a second guiding segment portion 121a and a second extending segment portion 121b.

The first guiding section 111a is connected to the first top surface 112 of the first sidewall 110, and extends from the first top surface 112 to the first extension section 111b, so that the first guiding section 111a and the first extension section 111b are connected to each other. The second guiding section 121a is connected to the second top surface 122 of the second sidewall 120, and extends from the second top surface 122 to the second extending section 121b, so that the second guiding section 121a and the second extension section 121b is connected to each other.

It should be particularly noted that, in this embodiment, the first extension portion 111b extends from the first guiding segment portion 111a toward the connecting position C, and between the first guiding segment portion 111a and the first extending segment portion 111b. A first good angle α is formed. The second extension portion 121b extends from the second guiding segment portion 121a toward the connection position C, and a second superior angle β is formed between the second guiding segment portion 121a and the second extending segment portion 121b. The first preferred angle α may be, for example, between 220° and 270°, and the second preferred angle β may be, for example, between 220° and 270°.

Referring to FIGS. 3A-3C, the frame 200 includes a body 210 and a plurality of protrusions 220a, 220b, wherein the protrusions 220a, 220b are disposed on the outer surface 212 of the body 210 and respectively correspond to the first guiding groove 111 and The second guiding groove 121.

It should be noted that the protrusion 220a has a first section 221a and a second section 222a, and the first section 221a is located between the body 210 and the second section 222a to connect the two. The diameter of the first section 221a is less than or equal to the width of the aforementioned first guiding groove 111, and the diameter of the second section 222a is larger than the width of the aforementioned first guiding groove 111.

Similarly, the projection 220b has a first section 221b and a second section 222b, and the first section 221b is located between the body 210 and the second section 222b to connect the two. The diameter of the first section 221b is less than or equal to the width of the second guiding groove 121, and the diameter of the second section 222a is larger than the width of the second guiding groove 121.

In addition, in this embodiment, the corresponding connection position C on the body 210 The distance between the corner 213 and the protrusion 220a corresponding to the first guiding groove 111 is smaller than the distance between the first guiding segment portion 111a and the connecting position C, and the aforementioned corner 213 and the protrusion 220b corresponding to the second guiding groove 121 The distance between them is smaller than the distance between the second guiding segment portion 121a and the connecting position C.

In the present embodiment, the housing 100 is constructed of a rigid material such as aluminum, magnesium, or an alloy thereof, and the frame 200 includes an elastic material such as rubber or plastic, and thus has flexibility. When the user wants to combine the housing 100 with the frame 200, an external force can be applied to slightly bend the frame 200 such that the projections 220 on the frame 200 are aligned with the first guide groove 111 and the second guide groove 121, respectively. In this way, the first section 221 of the protrusion 220 can be slid into the first guiding groove 111 and the second guiding groove 121 along the first guiding section 111a and the second guiding section 121a, respectively.

Then, when the first sections 221a, 221b of the protrusions 220a, 220b are moved to the first extension portion 111b and the second extension portion 121b, respectively, the user can release the external force, and the frame 200 will return to the initial state, and Since the distance between the corner 213 of the body 210 and the protrusions 220a, 220b is smaller than the distance between the connection position C and the first and second guiding section portions 111a, 121a, respectively, the protrusions 220a, 220b of the frame 200 will be Moving along the first and second guiding segment portions 111a, 121a toward the connecting position C, and then engaging the end positions of the first and second guiding segment portions 111a, 121a without shifting in the XY plane The diameter of the second section 222a, 222b is greater than the width of the first guiding grooves 111, 121 to limit the displacement movement in the Z direction, thereby completing the assembly of the housing 100 and the frame 200.

As shown in FIGS. 4A-4C, when the housing 100 is coupled to the frame 200, The first sections 221a, 221b of the protrusions 220a, 220b respectively pass through the first extension portion 111b of the first guide groove 111 and the second extension portion 121b of the second guide groove 121, and the protrusions 220a, 220b The second sections 222a, 222b will protrude from the first side wall 110 and the second side wall 120, respectively.

Since the distance between the corner 213 of the body 210 and the protrusions 220a, 220b is smaller than the distance between the connection position C and the first and second guiding section portions 111a, 121a, respectively, and the first guiding section 111a and the first A first advantageous angle α is formed between the extended section portions 111b, and a second advantageous angle β is formed between the second guiding segment portion 121a and the second extending segment portion 121b, so that the protrusion 220a is applied without external force application. 220b will not be able to align and pass through the first guiding segment portion 111a and the second guiding segment portion 121a. Thus, the frame 200 can be fixed relative to the housing 100 in the Z-axis direction, as well as in the X-axis direction and the Y-axis direction.

It should be noted that in the present embodiment, the thickness of the first segment 221a is substantially equal to the thickness of the first sidewall 110, and the thickness of the second segment 222a is also substantially equal to the thickness of the first sidewall 110. That is, the protrusion 220a is approximately twice the thickness of the first side wall 110. In this way, the first sidewall 110 can be sandwiched between the body 210 and the second section 222a to make the frame 200 and the housing 100 more stable.

Similarly, in the present embodiment, the thickness of the first section 221b is substantially equal to the thickness of the second sidewall 120, and the thickness of the second section 222b is also substantially equal to the thickness of the second sidewall 120. That is, the protrusion 220b is approximately twice the thickness of the second side wall 120. In this way, the second sidewall 120 can be sandwiched between the body 210 Between the second section 222b, the frame 200 and the housing 100 are more stable.

In the present embodiment, the size of the projection 220a is the same as the size of the projection 220b. In some embodiments, the protrusions 220a and the protrusions 220b can also be of different sizes to avoid human error in assembly.

Referring to FIGS. 1 , 4B , and 4C , when the components of the backlight module are assembled, an accommodation space R, a light source 300 , a reflective component 400 , and a light guide plate 500 may be formed between the housing 100 and the frame 200 . The optical film module 600 can be accommodated in the accommodating space R and surrounded by the first sidewall 110 and the second sidewall 120. The light guide plate 500 is disposed between the reflective element 400 and the optical film set 600, and the optical film set 600 is disposed between the frame 200 and the light guide plate 500.

The light source 300 is disposed on one side of the light guide plate 500. The light provided by the light source 300 can enter the light guide plate 500 and be guided by the reflective element 400, the light guide plate 500 and the optical film module 600, and generate a planar light output in the direction of the frame 200. The optical film module 600 can include a plurality of optical films, the number of which depends on actual specifications.

Referring to FIG. 5A, in another embodiment of the present invention, the first guiding segment portion 111a of the first guiding groove 111 of the housing 100 is extended by the first guiding segment portion 111a away from the connecting position C. The second guiding segment portion 121a of the second guiding groove 121 also extends from the second guiding segment portion 121a in a direction away from the connecting position C. In this embodiment, the distance between the protrusion 220a and the corner 213 on the frame 200 will be greater than the distance between the first guiding section 111a and the connecting position C, and the distance between the protrusion 220b and the corner 213 will be Greater than the second guiding section 121a and the connecting position Set the distance between C.

As shown in FIG. 5B, in another embodiment of the present invention, the first guiding segment portion 111a of the first guiding groove 111 of the housing 100 is extended by the first guiding segment portion 111a toward the connecting position C. The second guiding segment portion 121a of the second guiding groove 121 extends from the second guiding segment portion 121a in a direction away from the connecting position C. In this embodiment, the distance between the protrusion 220a and the corner 213 on the frame 200 is smaller than the distance between the first guiding section 111a and the connecting position C, and the distance between the protrusion 220b and the corner 213 will be greater than The distance between the second guiding section 121a and the connection position C.

Referring to FIG. 6 , a display device according to an embodiment of the present invention may include a display panel D and a backlight module in any of the foregoing embodiments (the backlight module shown in FIGS. 4A and 4B is taken as an example). The display panel D is disposed on the frame 200, and the frame 200 is located between the light guide plate 500 and the display panel D.

In summary, the present invention provides a backlight module having a flexible first frame and a second guide groove on a first side wall and a second side wall of the housing, respectively, on a flexible frame. The protrusion can slide into the guide groove to reduce the generation of scraping, and the housing and the frame are combined in the foregoing manner to ensure the fixing strength of the two.

Although the embodiments of the present invention and its advantages have been disclosed as above, it should be understood that those skilled in the art can make changes, substitutions and refinements without departing from the spirit and scope of the present invention. In addition, the scope of protection of this creation is not limited to the specific embodiments described in the specification. Process, machine, manufacture, material composition, apparatus, method and procedure, any one of ordinary skill in the art can understand the process, machine, manufacture, material composition, device, or The methods and steps can be used according to the present invention as long as they can perform the same function or obtain substantially the same result in the embodiments described herein. Therefore, the scope of protection of the present invention includes the above processes, machines, manufacturing, material compositions, devices, methods and steps. In addition, each patent application scope constitutes an individual embodiment, and the scope of protection of the present invention also includes the combination of each patent application scope and embodiment.

Although the present invention has been disclosed above in the foregoing several preferred embodiments, it is not intended to limit the present invention. Those who have ordinary knowledge in the technical field of the present invention can make some changes and refinements without departing from the spirit and scope of the present creation. Therefore, the scope of protection of this creation is subject to the definition of the scope of the patent application attached. In addition, each of the patent application scopes constitutes a separate embodiment, and the scope of the various patent applications and combinations of the embodiments are all within the scope of the present invention.

100‧‧‧shell

110‧‧‧First side wall

111‧‧‧First channel

120‧‧‧ second side wall

121‧‧‧Second guiding channel

130‧‧‧floor

200‧‧‧Frame

212‧‧‧ outer surface

220a‧‧‧ bump

220b‧‧‧ bump

300‧‧‧Light source

400‧‧‧reflecting elements

500‧‧‧Light guide plate

600‧‧‧Optical diaphragm module

Claims (12)

A backlight module includes: a casing having a first side wall and a second side wall, wherein the first side wall is connected to the second side wall; a light guide plate is surrounded by the first side wall and the second side wall; a light source, the light emitted by the light guide plate enters the light guide plate, and then generates a planar light output from the light guide plate; and a frame for interfacing with the housing to fix the light guide plate to the housing and the frame The housing further has a first guiding groove formed on the first side wall and having a first guiding section and a first extending section, wherein the first guiding section and the first Forming a first superior angle between the extending portions; the housing further has a second guiding groove formed on the second side wall and having a second guiding portion and a second extending portion, wherein the Forming a second superior angle between the second guiding section and the second extending section; and the frame has a plurality of protrusions, wherein the protrusions respectively pass through the housing when the housing is coupled to the frame a first extension portion and the second extension portion. The backlight module of claim 1, wherein the first sidewall has a first top surface, and the second sidewall has a second top surface, wherein the first guiding segment is connected to the first The top surface of the second guiding section is connected to the second top surface. The backlight module of claim 1, wherein the first sidewall and the second sidewall are connected to each other at a connecting position, and the first extending portion extends from the first guiding segment toward the connecting position. And the second extension portion extends from the second guiding segment toward the connecting position. The backlight module of claim 1, wherein the first sidewall and the second sidewall are connected to each other at a connection position, and the first extension portion is away from the connection position from the first guiding segment. The direction extends, and the second extension portion extends from the second guiding segment toward the direction away from the connecting position. The backlight module of claim 1, wherein the first sidewall and the second sidewall are connected to each other at a connection position, and the first extension portion is from the first guiding segment toward the connecting position. The direction extends, and the second extension portion extends from the second guiding segment toward the direction away from the connecting position. The backlight module of claim 1, wherein the first superior angle is between 220° and 270°, and the second preferred angle is between 220° and 270°. The backlight module of claim 1, wherein each of the protrusions has a first section and a second section, wherein the protrusions are combined when the housing is coupled to the frame The first section passes through the first extension section and the second extension section, respectively, and the second sections of the protrusions respectively protrude from the first sidewall and the second sidewall. The backlight module of claim 7, wherein the first section The diameter of the first segment is less than or equal to the width of the first channel, the diameter of the second segment is smaller than the width of the second channel, the diameter of the second segment is greater than the width of the first channel, and the The diameter of the two sections is greater than the width of the second channel. The backlight module of claim 1, wherein the protrusions have a thickness substantially twice the thickness of the first side wall, and the protrusions have a thickness substantially two of the thickness of the second side wall. Times. The backlight module of claim 1, wherein the frame has flexibility. The backlight module of claim 1, wherein the housing is formed of a rigid material. A display device, comprising: the backlight module according to any one of claims 1 to 11, and a display panel disposed on the frame, wherein the frame is located on the light guide plate and the display panel between.