CN210376751U - Backlight module and display module - Google Patents
Backlight module and display module Download PDFInfo
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- CN210376751U CN210376751U CN201921518595.4U CN201921518595U CN210376751U CN 210376751 U CN210376751 U CN 210376751U CN 201921518595 U CN201921518595 U CN 201921518595U CN 210376751 U CN210376751 U CN 210376751U
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- back plate
- incident surface
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Abstract
A backlight module and a display module having the same are provided. The backlight module comprises a back plate, a light guide plate, a frame body, a light source component, at least one stop block and an elastic component. The back plate is provided with a convex column which is provided with a stopping part. The light guide plate is provided with a light emergent surface, a bottom surface and a light incident surface and is arranged on the back plate. The frame body is arranged on the back plate and is provided with a slot, the convex column penetrates through the slot, the stopping part is positioned between the light guide plate and the frame body, and part of the frame body is positioned between the stopping part and the back plate and is limited on the back plate by the stopping part. The light source assembly is arranged on the frame body and is provided with at least one light-emitting element, and the light-emitting element faces the light incident surface. The stop block is arranged on the light source component and is abutted against the light incident surface. The elastic element is arranged between the back plate and the frame body in a compressible manner along the direction vertical to the light incident surface. The utility model discloses a backlight module and display module can ensure that the distance between the income plain noodles of light emitting component and light guide plate accords with the expectation, and can reduce device thickness.
Description
Technical Field
The present invention relates to an optical module and a display module, and more particularly to a backlight module and a display module having the same.
Background
As display technology has developed, more and more advertising signs use display devices to display their advertising content. No matter the display device is applied to advertisement or other outdoor displays, the backlight module of the display device needs to have enough brightness to enable the display device to clearly display pictures in an outdoor environment, and therefore, the display device is mostly provided with light emitting elements on both sides of a light guide plate to achieve the requirement of high brightness in a double-side light incident mode. However, the light guide plate may expand with heat and contract with cold to different degrees according to different external environments, so that the distance between the light incident surface on the two sides of the light guide plate and the corresponding light emitting element cannot meet the expectation, thereby affecting the display quality. In addition, the display device for the general home or the outdoor use is designed to be thin according to the market demand.
The background section is only provided to aid in understanding the present invention, and therefore the disclosure in the background section may include some known techniques which do not constitute a part of the knowledge of those skilled in the art. The disclosure in the "background" section does not represent that content or the problems which may be solved by one or more embodiments of the present invention are known or appreciated by those skilled in the art prior to the filing of the present application.
SUMMERY OF THE UTILITY MODEL
The utility model provides a backlight module and have its display module can ensure that the distance between the income plain noodles of light emitting component and light guide plate accords with the expectation, and can reduce device thickness.
Other objects and advantages of the present invention can be further understood from the technical features disclosed in the present invention.
In order to achieve one or a part of or all of the above or other objectives, an embodiment of the present invention provides a backlight module, which includes a back plate, a light guide plate, a frame, a light source assembly, at least one stopper, and an elastic member. The back plate is provided with a convex column which is provided with a stopping part. The light guide plate is provided with a light emergent surface and a bottom surface which are opposite to each other, and is provided with a light incident surface connected between the light emergent surface and the bottom surface, and the light guide plate is arranged on the back plate. The frame body is arranged on the back plate and is provided with a slot, the convex column penetrates through the slot, the stopping part is positioned between the light guide plate and the frame body, and part of the frame body is positioned between the stopping part and the back plate and is limited on the back plate by the stopping part. The light source assembly is arranged on the frame body and is provided with at least one light-emitting element, and the light-emitting element faces the light incident surface. The stop block is arranged on the light source component and is abutted against the light incident surface. The elastic element is arranged between the back plate and the frame body in a compressible manner along the direction vertical to the light incident surface.
In order to achieve one or a part of or all of the above or other objectives, an embodiment of the present invention provides a display module, which includes a backlight module and a display panel. The backlight module comprises a back plate, a light guide plate, a frame body, a light source component, at least one stop block and an elastic component. The back plate is provided with a convex column which is provided with a stopping part. The light guide plate is provided with a light emergent surface and a bottom surface which are opposite to each other, and is provided with a light incident surface connected between the light emergent surface and the bottom surface, and the light guide plate is arranged on the back plate. The frame body is arranged on the back plate and is provided with a slot, the convex column penetrates through the slot, the stopping part is positioned between the light guide plate and the frame body, and part of the frame body is positioned between the stopping part and the back plate and is limited on the back plate by the stopping part. The light source assembly is arranged on the frame body and is provided with at least one light-emitting element, and the light-emitting element faces the light incident surface. The stop block is arranged on the light source component and is abutted against the light incident surface. The elastic element is arranged between the back plate and the frame body in a compressible manner along the direction vertical to the light incident surface. The display panel is configured on the backlight module.
Based on the above, the embodiments of the present invention have at least one of the following advantages or effects. The utility model discloses an among the backlight module, locate between the income plain noodles of light guide plate and the light source subassembly with backstop piece clamp to the distance between the income plain noodles of avoiding the light guide plate and the light source subassembly changes because of the expend with heat and contract with cold of light guide plate and unexpected. Under this configuration, in order to make the light guide plate still have a space for thermal expansion and contraction without warpage, the backlight module of the present invention configures an elastic member between the back plate and the frame body, which can be compressed along the direction perpendicular to the light incident surface, so as to absorb the displacement generated by the light guide plate under the condition of thermal expansion and contraction by means of the elastic deformation of the elastic member. On the other hand, in the backlight module of the present invention, the protruding pillar is used for assembling between the back plate and the frame body, wherein the stopping portion of the protruding pillar is located between the light guide plate and the frame body instead of being located outside the back plate, thereby avoiding the stopping portion from increasing the thickness of the whole device outside the back plate.
In order to make the aforementioned and other features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Drawings
Fig. 1 is a cross-sectional view of a display module according to an embodiment of the present invention.
Fig. 2 is a partial component top view of the display module of fig. 1 along a viewing angle V.
Detailed Description
The foregoing and other features and advantages of the invention will be apparent from the following, more particular description of a preferred embodiment, as illustrated in the accompanying drawings. Directional terms as referred to in the following examples, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Accordingly, the directional terminology is used for purposes of illustration and is in no way limiting.
Fig. 1 is a cross-sectional view of a display module according to an embodiment of the present invention. Referring to fig. 1, a display module 100 of the present embodiment includes a backlight module 110 and a display panel 120. The display panel 120 is, for example, a liquid crystal display panel and is disposed on the frame 110a of the backlight module 110. The backlight module 110 is used for providing light required by the display panel 120 to display an image.
Fig. 2 is a partial component top view of the display module of fig. 1 along a viewing angle V. Referring to fig. 1 and fig. 2, in detail, the backlight module 110 includes a back plate 112, a light guide plate 114, a frame 116 and a light source assembly 118. The light guide plate 114 and the frame 116 are disposed on the back plate 112. The light guide plate 114 has a light emitting surface 114a and a bottom surface 114b opposite to each other, and has a light incident surface 114c connected between the light emitting surface 114a and the bottom surface 114 b. The back plate 112 has a first sidewall 112d, the frame 116 has a second sidewall 116b, and the second sidewall 116b is located between the light incident surface 114c of the light guide plate 114 and the first sidewall 112d of the back plate 112.
The light source assembly 118, for example, a light emitting diode light bar, is disposed on the frame 116 and located between the second sidewall 116b and the light incident surface 114c, and includes a substrate 118a and at least one light emitting element 118b (fig. 2 shows a plurality of light emitting elements) disposed on the substrate 118a, the substrate 118a is disposed on the second sidewall 116b of the frame 116, and the light emitting element 118b, for example, a light emitting diode element, has a light emitting surface facing the light incident surface 114c of the light guide plate 114, so that light emitted by the light emitting element 118b can enter the light guide plate 114 from the light incident surface 114c, and is transmitted from the light emitting surface 114a to the display panel 120 after being transmitted in. In this embodiment, the display module 100 may include an optical film set 130, and the optical film set 130 is disposed on the light emitting surface 114a of the light guide plate 114 and located between the backlight module 110 and the display panel 120.
The backlight module 110 of the present embodiment further includes at least one stop block 111 (fig. 2 shows a plurality of stop blocks) and an elastic member 113. The stop block 111 is disposed on the substrate 118a of the light source assembly 118 and located between any two light emitting elements 118b, and the stop block 111 abuts against the light incident surface 114c of the light guide plate 114. The stop block 111 may be a rigid material, such as Polycarbonate (PC). The elastic element 113 is, for example, foam or other elastic member, and is compressibly disposed between the first sidewall 112D of the back plate 112 and the second sidewall 116b of the frame 116 along a direction D perpendicular to the light incident surface 114 c.
As described above, the stopper 111 is interposed between the light incident surface 114c of the light guide plate 114 and the light source assembly 118, so that the distance between the light incident surface 114c of the light guide plate 114 and the light emitting elements 118b of the light source assembly 118 is prevented from being undesirably changed due to thermal expansion and contraction of the light guide plate 114. In addition, in order to make the light guide plate 114 have a space for expansion and contraction without warping, the elastic member 113 capable of being compressed along the direction D perpendicular to the light incident surface 114c is disposed between the back plate 112 and the frame 116, so as to absorb the displacement of the light guide plate 114 caused by expansion and contraction by elastic deformation of the elastic member 113. In the present embodiment, in the direction D perpendicular to the light incident surface 114c of the light guide plate 114, the thickness of the stop block 111 is designed to be greater than that of the light emitting element 118b, so that the light emitting element 118b is not pressed by the light incident surface 114c of the light guide plate 114 and is not damaged.
The backlight module 110 of the present embodiment is, for example, in a double-sided light incident mode. Specifically, as shown in fig. 1, the light guide plate 114 has another light incident surface 114c 'connected between the light emitting surface 114a and the bottom surface 114b, and the two light incident surfaces 114c and 114 c' are opposite to each other. The backlight module 110 includes another light source assembly 118 'and at least another stopper 111'. The light source module 118 'and the stop block 111' are configured and operate in a manner similar to that of the light source module 118 and the stop block 111. That is, the light source module 118 'includes a substrate 118 a' and at least one light emitting element 118b 'disposed on the substrate 118 a', and the light emitting element 118b 'faces the light incident surface 114 c' of the light guide plate 114. The stop block 111 ' is disposed on the substrate 118a ' and abuts against the light incident surface 114c ' to prevent the distance between the light incident surface 114c ' and the light emitting element 118b ' from being unexpectedly changed due to thermal expansion and contraction of the light guide plate 114.
The light source assembly 118 'is different from the light source assembly 118 in that the light source assembly 118' is not disposed on the frame 116 as the light source assembly 118, and the light source assembly 118 'is disposed directly on the other first sidewall 112 d' of the back plate 112. Moreover, since the elastic member 113 provides a displacement space required by the light guide plate 114 when it expands with heat and contracts with cold by virtue of its elastic deformability, another elastic member symmetrical to the elastic member 113 is not disposed at the light source assembly 118'.
Referring to fig. 1, in the present embodiment, the back plate 112 has a protruding pillar 112a, and the protruding pillar 112a is used for assembling between the back plate 112 and the frame body 116. Specifically, the protruding column 112a is, for example, a screw member that is screwed to the stud 112c on the main body 112b of the back plate 112. The protruding pillar 112a has a stopping portion S, the frame body 116 has a slot 116a, and the protruding pillar 112a passes through the slot 116 a. The stopping portion S is located between the light guide plate 114 and the frame 116, and a portion of the frame 116 is located between the stopping portion S and the back plate 112 and is limited on the back plate 112 by the stopping portion S. Since the stopping portion S of the protruding pillar 112a is located between the light guide plate 114 and the frame 116 rather than outside the back plate 112, as mentioned above, the stopping portion S can be prevented from increasing the thickness of the whole device outside the back plate 112, and the stopping portion S can be prevented from interfering with the installation of other components outside the back plate 112.
Referring to fig. 1, in the present embodiment, in a direction D perpendicular to the light incident surface 114c of the light guide plate 114, a size of the slot 116a of the frame 116 is larger than an outer diameter of the convex pillar 112 a. Therefore, the protruding pillar 112a and the slot 116a can move relatively, so that when the light guide plate 114 expands with heat and contracts with cold, the light guide plate 114, the stop block 111 and the light source assembly 118 can move relative to the back plate 112.
Further, for example, a user applies a force to the stop portion S of the boss 112a by using a tool to screw the boss 112a to the back plate 112. That is, when the stopping portion S is located between the light guide plate 114 and the frame 116 as described above, the user performs the screwing of the protruding pillar 112a from the front side of the back plate 112 (i.e., the side of the back plate 112 facing the light guide plate 114), so that the protruding pillar 112a can be locked on the back plate 112 without turning over the back plate 112 during the assembly process and the assembly position can be observed to be proper, which has the effects of easy assembly and saving assembly time.
Referring to fig. 1, the backlight module 110 of the present embodiment further includes at least one supporting block 140 and at least one supporting block 150. The supporting block 140 is supported between the light guide plate 114 and the back plate 112, and the supporting block 150 is supported between the light guide plate 114 and the frame 116, so that the incident surface 114c and the incident surface 114c ' of the light guide plate 114 can be aligned with the light emitting elements 118b of the light source assembly 118 and the light emitting elements 118b ' of the light source assembly 118 ', respectively. In other embodiments, the supporting block 140 and the supporting block 150 may not be disposed, and the light incident surface 114c 'of the light guide plate 114 are aligned with the light emitting element 118b and the light emitting element 118 b' respectively by other disposing methods or structures, which are not limited in the present invention.
In summary, the embodiments of the present invention have at least one of the following advantages or effects. The utility model discloses an among the backlight module, locate between the income plain noodles of light guide plate and the light source subassembly with backstop piece clamp to the distance between the income plain noodles of avoiding the light guide plate and the light source subassembly changes because of the expend with heat and contract with cold of light guide plate and unexpected. Under this configuration, in order to make the light guide plate still have a space for thermal expansion and contraction without warpage, the backlight module of the present invention configures an elastic member between the back plate and the frame body, which can be compressed along the direction perpendicular to the light incident surface, so as to absorb the displacement generated by the light guide plate under the condition of thermal expansion and contraction by means of the elastic deformation of the elastic member. On the other hand, in the backlight module of the present invention, the protruding pillar is used for assembling between the back plate and the frame body, wherein the stopping portion of the protruding pillar is located between the light guide plate and the frame body instead of being located outside the back plate, thereby avoiding the stopping portion from increasing the thickness of the whole device outside the back plate.
However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby, and all the simple equivalent changes and modifications made according to the claims and the contents of the present invention are still included in the scope of the present invention. Moreover, it is not necessary for any embodiment or claim to address all of the objects, advantages, or features disclosed herein. In addition, the abstract and the utility model name are only used for assisting the retrieval of patent documents and are not used for limiting the scope of the invention. Furthermore, the terms "first", "second", and the like in the description or the claims are used only for naming elements (elements) or distinguishing different embodiments or ranges, and are not used for limiting the upper limit or the lower limit on the number of elements.
Description of reference numerals:
100: display module
110: backlight module
110 a: frame body
111. 111': stop block
112: back plate
112 a: convex column
112 b: main body
112 c: stud bolt
112d, 112 d': first side wall
113: elastic piece
114: light guide plate
114 a: light emitting surface
114 b: bottom surface
114c, 114 c': light incident surface
116: rack body
116 a: slotting
116 b: second side wall
118. 118': light source assembly
118a, 118 a': substrate
118b, 118 b': light emitting element
120: display panel
130: optical film group
140. 150: supporting block
D: direction of rotation
S: stop part
V: viewing angle.
Claims (11)
1. The utility model provides a backlight module, its characterized in that, backlight module includes backplate, light guide plate, support body, light source subassembly, an at least backstop piece and elastic component, wherein:
the back plate is provided with a convex column, wherein the convex column is provided with a stopping part;
the light guide plate is provided with a light emergent surface and a bottom surface which are opposite to each other, and is provided with a light incident surface connected between the light emergent surface and the bottom surface, wherein the light guide plate is arranged on the back plate;
the frame body is arranged on the back plate and is provided with a slot, the convex column penetrates through the slot, the stopping part is positioned between the light guide plate and the frame body, and part of the frame body is positioned between the stopping part and the back plate and is limited on the back plate by the stopping part;
the light source assembly is configured on the frame body and is provided with at least one light-emitting element, wherein the at least one light-emitting element faces the light incident surface;
the at least one stop block is configured on the light source component and abuts against the light incident surface; and
the elastic element is arranged between the back plate and the frame body in a compressible manner along a direction perpendicular to the light incident surface.
2. The backlight module of claim 1, wherein the thickness of the at least one stop block is greater than the thickness of the at least one light-emitting element in a direction perpendicular to the light incident surface.
3. The backlight module of claim 1, wherein the dimension of the slot is larger than the outer diameter of the convex pillar in the direction perpendicular to the light incident surface.
4. The backlight module of claim 1, wherein the protrusion is a screw, and the screw is screwed to the main body of the back plate.
5. The backlight module of claim 1, wherein the back plate has a first sidewall, the frame has a second sidewall, the second sidewall is located between the incident surface and the first sidewall, the light source assembly is disposed on the second sidewall and located between the second sidewall and the incident surface, and the elastic element is disposed between the first sidewall and the second sidewall.
6. The backlight module of claim 1, comprising at least one support block, wherein the at least one support block is supported between the light guide plate and the back plate.
7. The backlight module of claim 1, wherein the light source assembly comprises a substrate and the at least one light-emitting element, the substrate is disposed on the frame, and the at least one light-emitting element and the at least one stopper are disposed on the substrate.
8. The backlight module of claim 1, wherein the number of the at least one light emitting element is plural, and the at least one stopper is disposed between any two light emitting elements.
9. The backlight module of claim 1, comprising another light source assembly, wherein the light guide plate has another light incident surface connected between the light emitting surface and the bottom surface, the another light incident surface and the light incident surface are opposite to each other, the another light source assembly is disposed on the back plate and has at least another light emitting element, and the at least another light emitting element faces the another light incident surface.
10. The backlight module of claim 9, comprising at least another stop block, wherein the at least another stop block is disposed on the another light source module and abuts against the another light incident surface.
11. A display module, comprising a backlight module and a display panel, wherein:
backlight module includes backplate, light guide plate, support body, light source subassembly, an at least backstop piece and elastic component, wherein:
the back plate is provided with a convex column, wherein the convex column is provided with a stopping part;
the light guide plate is provided with a light emergent surface and a bottom surface which are opposite to each other, and is provided with a light incident surface connected between the light emergent surface and the bottom surface, wherein the light guide plate is arranged on the back plate;
the frame body is arranged on the back plate and is provided with a slot, the convex column penetrates through the slot, the stopping part is positioned between the light guide plate and the frame body, and part of the frame body is positioned between the stopping part and the back plate and is limited on the back plate by the stopping part;
the light source assembly is configured on the frame body and is provided with at least one light-emitting element, wherein the at least one light-emitting element faces the light incident surface;
the at least one stop block is configured on the light source component and abuts against the light incident surface; and
the elastic element is arranged between the back plate and the frame body in a compressible manner along a direction perpendicular to the light incident surface; and
the display panel is configured on the backlight module.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921518595.4U CN210376751U (en) | 2019-09-12 | 2019-09-12 | Backlight module and display module |
| TW109200660U TWM598375U (en) | 2019-09-12 | 2020-01-16 | Backlight module and display module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921518595.4U CN210376751U (en) | 2019-09-12 | 2019-09-12 | Backlight module and display module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210376751U true CN210376751U (en) | 2020-04-21 |
Family
ID=70255330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921518595.4U Active CN210376751U (en) | 2019-09-12 | 2019-09-12 | Backlight module and display module |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN210376751U (en) |
| TW (1) | TWM598375U (en) |
-
2019
- 2019-09-12 CN CN201921518595.4U patent/CN210376751U/en active Active
-
2020
- 2020-01-16 TW TW109200660U patent/TWM598375U/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| TWM598375U (en) | 2020-07-11 |
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