CN111326066B - Back plate, backlight module and display device - Google Patents
Back plate, backlight module and display device Download PDFInfo
- Publication number
- CN111326066B CN111326066B CN202010268202.XA CN202010268202A CN111326066B CN 111326066 B CN111326066 B CN 111326066B CN 202010268202 A CN202010268202 A CN 202010268202A CN 111326066 B CN111326066 B CN 111326066B
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- heat exchange
- back plate
- bottom plate
- installation space
- backlight module
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20954—Modifications to facilitate cooling, ventilating, or heating for display panels
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- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Thermal Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a back plate, a backlight module and a display device, wherein the back plate comprises a back plate body, a concave structure and a heat exchange unit; the back plate body comprises a mounting space and a recessed structure, the recessed structure is arranged on the surface of the back plate body, which is far away from the mounting space, and the heat exchange unit is arranged in the recessed structure and is configured to disperse heat obtained by the mounting space in the back plate body; the back plate can improve the heat dissipation efficiency and the heat exchange efficiency, further improve the temperature uniformity and the heat dissipation efficiency of the backlight module and the display device adopting the back plate, and finally improve the display effect and prolong the service life.
Description
Technical Field
The invention relates to the technical field of display, in particular to a back plate, a backlight module and a display device.
Background
With the rapid development of the display panel industry, the use scenes of the display or the display device are also wider and wider. Currently, the design trend of thinning and highlighting is also increasing the requirement for the heat dissipation performance of the backlight module.
Particularly, the existing side-in type backlight module has the problems of uneven temperature distribution, large temperature difference and the like. Specifically, the temperature of the middle lower part of the back plate is lower than that of the light incident side, so that the heat dissipation efficiency of the back plate is lower. The high temperature of the light incident side for a long time will affect the display quality and the service life of the backlight module or the display module.
Therefore, it is desirable to provide a back plate, a backlight module and a display device to solve the above problems.
Disclosure of Invention
The invention aims to solve the problems and provides a back plate, a backlight module and a display device.
In order to solve the problems, the back plate, the backlight module and the display device adopt the following technical scheme.
The invention also provides a back plate, which is used for a backlight module, the backlight module comprises a light source and an optical film layer, and the back plate comprises a back plate body, a light source and a light source cover, wherein the back plate body is provided with a mounting space and a concave structure, the mounting space is used for accommodating at least one of the light source and the optical film layer, and the concave structure is formed on the surface of the back plate body, which is deviated from the mounting space; and a heat exchange unit located within the recess structure and configured to disperse heat obtained via the installation space within the back plate body.
Further, the heat exchange unit comprises a first heat exchange device, and the first heat exchange device comprises a first sealing body and a first heat exchange agent filled in the first sealing body.
Further, the heat exchange unit further comprises a vibration device, the vibration device is located in the first sealing body, and the first sealing body is at least used for driving molecules of the first heat exchange agent to vibrate.
Further, the heat exchange unit further comprises a second heat exchange device, the second heat exchange device is located in the first sealing body, and the second heat exchange device comprises a second sealing body and a second heat exchange agent filled in the second circulation pipeline.
Further, the first heat exchanger or the second heat exchanger is independently selected from a liquid heat exchanger or a semi-solid heat exchanger.
Further, the backplate body is including being used for enclosing bottom plate portion and the curb plate portion of establishing installation space, wherein:
the bottom plate part is used for bearing the optical film layer on one side facing the installation space, and the recessed structure is positioned on the surface of the bottom plate part, which faces away from the installation space;
the side plate portion surrounds the periphery of the bottom plate portion, and one side of the side plate portion facing the installation space is used for bearing the light source.
Further, the bottom plate part comprises a bottom plate and a lining plate located on one side, deviating from the installation space, of the bottom plate, wherein one side edge of the lining plate extends and is bent to form the side plate part, and the pit structures are formed on the surface, deviating from the bottom plate, of the lining plate.
The invention also provides a backlight module which comprises a light source, an optical film layer and the back plate.
The invention also provides a display device, which comprises the back plate or the backlight module.
The back plate, the backlight module and the display device have the following beneficial effects:
according to the back plate, the concave structure is additionally arranged, so that the heat dissipation area of the back plate can be increased, and the heat dissipation efficiency of the back plate is improved; the heat exchange unit is arranged in the concave structure, so that the heat dissipation efficiency and the heat exchange efficiency of the back plate are further improved, and heat obtained by the installation space in the back plate body can be quickly and uniformly dispersed, so that the uniformity of heat distribution of the back plate and the overall heat dissipation rate are improved, and the back plate is prevented from being too high in temperature or too large in temperature difference; by additionally arranging the vibrating device, the collision of molecules in the first heat exchange device and the heat exchange rate of the first heat exchange device and the second heat exchange device can be improved, and the heat dissipation effect is further improved; by adopting the back plate, the overall heat dissipation efficiency and the uniformity of temperature distribution of the backlight module and the display device are improved, the temperature difference is prevented from being larger or the temperature is prevented from being too high, the display quality is improved, and the service life is prolonged.
Drawings
The technical solution and other advantages of the present invention will become apparent from the following detailed description of specific embodiments of the present invention, which is to be read in connection with the accompanying drawings.
FIG. 1 is a schematic view of an embodiment of a backplate according to the present invention.
Fig. 2 is a schematic view of a heat exchange unit in a recessed configuration.
Fig. 3 is a schematic view of a backlight module according to an embodiment of the invention.
Fig. 4 is a schematic diagram of a display module according to an embodiment of the invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.
Fig. 1 is a schematic view of an embodiment of the back plate of the present invention, and fig. 2 is a schematic view of a heat exchange unit in a recessed structure.
As shown in fig. 1 and fig. 2, the present invention provides a back plate 1 for use in a backlight module, where the back plate 1 includes a back plate body 11 and a heat exchange unit 12. The back plate body 11 includes a mounting space 11v and a recessed structure 11c, the mounting space 11v is used for accommodating at least one of the light source 2 and the optical film layer 3, and the recessed structure 11c is formed on a surface of the back plate body 11 facing away from the mounting space 11 v. The heat exchanging unit 12 is located in the recess structure 11c and configured to disperse the heat obtained through the installation space 11v in the back plate body 11.
Therefore, the back plate 1 can remarkably improve the heat exchange efficiency and the heat dissipation efficiency of the back plate 1 by additionally arranging the concave structures 11c and the heat exchange units 12, so that the overall temperature of the back plate 1 can be prevented from being too high or the temperature difference is prevented from being too large, and the display quality and the service life of the backlight module and the display module can be improved finally.
As shown in fig. 1, the back plate body 11 includes a bottom plate portion 111 and at least one side plate portion 112, wherein the side plate portion 112 is disposed around the periphery of the bottom plate portion 101 and is adjacent to the bottom plate portion 111, and the bottom plate portion 111 and the side plate portion 112 are disposed to surround the mounting space 11 v.
Specifically, the side of the bottom plate portion 111 facing the installation space 11v is used for carrying or installing the optical film layer 3, and the recessed structure 11c is located on the surface of the bottom plate portion 111 facing away from the installation space 11 v; the side plate portion 112 is provided on a side facing the mounting space 11v for mounting the light source 2.
In the present embodiment, the side plate portion 112 is vertically connected to the peripheral edge of the bottom plate portion 111.
As shown in fig. 1, the recessed structure 11c is located on the surface of the back plate body 11 facing away from the mounting space 11 v. The heat dissipation area between the back plate body 11 and the outside can be increased by additionally arranging the concave structures 11c, so that the heat dissipation efficiency of the back plate body 11 can be improved.
Specifically, the recessed structure 11c is located on a surface of the bottom plate portion 111 of the back plate body 11 facing away from the mounting space 11 v. In particular, the recess 11c is located on the surface of the backing plate 1112 facing away from the mounting space 11 v. By providing the recessed structures 11c in the bottom plate portion 111, the existing back plate design can be simplified.
It should be noted that the back plate 1 of the present invention does not limit the specific shape or size of the recessed structures 11 c.
Referring to fig. 1, in the present embodiment, the bottom plate portion 111 includes a bottom plate 1111 and a lining plate 1112 located on a side of the bottom plate 1111 facing away from the installation space 11v, and a side of the lining plate 1112 extends and is bent to form a side block, and the side block is used for the side plate portion 112. Specifically, the side plate portion 112 is formed by bending one side of the backing 1112 perpendicularly in a direction toward the mounting space 112.
In other embodiments, the backplate body 11 may also be a unitary structure. The back plate body 11 can also adopt other structures in specific design or implementation. That is, the back plate body 11 is not limited to the structure described in the present invention.
As shown in fig. 1, the heat exchanging unit 12 is disposed in the recessed structure 11c for dispersing the heat obtained from the installation space 11v in the back plate body 11. Through addding heat exchange unit 12 can show the improvement the thermal diffusion rate of backplate body 11 to can further the transmission efficiency of heat in backplate body 11 prevents backplate 1 produces great difference in temperature. The heat exchange unit 12 is arranged in the concave structure 11c, so that the thickness of the back plate body 11 is reduced, and the light and thin of the display device and the backlight module are realized.
Specifically, each of the recessed structures 11c includes at least one heat exchange unit 12 or a plurality of heat exchange units 12 stacked in layers. Referring to fig. 2, in the present embodiment, each of the concave structures 11c includes three heat exchanging units 12 stacked in layers.
As shown in fig. 2, the heat exchange unit 12 includes a first heat exchange device 121, and the first heat exchange device 121 includes a first sealing body 1211 and a first heat exchange agent 1212 filled in the first sealing body 1211.
Specifically, the first sealing body 1211 has at least one sealing cavity for containing and sealing the first heat exchange agent 1212. The first heat exchange agent 1212 may be a liquid heat exchange agent or a semi-solid heat exchange agent. In particular implementations, the liquid heat exchanger includes, but is not limited to, liquid water, alcohol, or liquid water with added sodium chloride.
As shown in fig. 2, the heat exchange unit 12 further comprises a second heat exchange device 122, wherein the second heat exchange device 122 is located in the second sealing body 1211, and the second heat exchange device 122 comprises a second sealing body 1221 and a second heat exchange agent 1222 filled in the second sealing body 1221.
Specifically, the second sealing body 1221 has at least one sealing cavity for containing and sealing the second heat exchange agent 1222. Specifically, the second heat exchange agent 1222 may be a liquid heat exchange agent or a semi-solid heat exchange agent. In particular implementations, the liquid heat exchanger includes, but is not limited to, liquid water, alcohol, or liquid water with added sodium chloride.
In this embodiment, the first heat exchanger 1212 is liquid water, and the second heat exchanger 1222 is liquid water added with sodium chloride.
With continued reference to fig. 2, the heat exchange unit 12 further includes a vibration device 123, and the vibration device 123 is located in the first sealing body 1211. The vibration device 123 is configured to drive molecules of the first heat exchanging agent 1212 to vibrate, and further, the heat exchanging rate of the first heat exchanging device 121 and the second heat exchanging device 122 can be improved, and the heat transfer effect is improved.
Specifically, the vibration device 123 is a bidirectional vibration device.
Therefore, according to the back plate 1 provided by the invention, the concave structures 11c are arranged, and the heat exchange units 12 are arranged in the concave structures 11c, so that the purposes of simplifying the existing back plate structure and improving the overall heat dissipation effect and the uniformity of temperature distribution of the back plate 1 can be simultaneously realized.
Fig. 3 is a schematic view of a backlight module according to an embodiment of the invention. As shown in fig. 3, the present invention further provides a backlight module, which includes the back plate 1, the light source 2 and the optical film layer 3. The back plate 1 is the back plate of the invention, and the light source 2 and the optical film layer 3 are accommodated in the installation space 11v of the back plate 1.
As shown in fig. 3, the light source 2 is located on the side of the side plate portion 112 facing the installation space 11v, and the optical film layer 3 is disposed on the side of the bottom plate portion 111 facing the installation space 11 v.
As shown in fig. 3, in the present embodiment, the light source 2 is located in the installation space 11v and is installed on one side of the liner 1112 corresponding to the side plate portion 112; the optical film layer 3 is located at a side of the bottom plate 1111 facing the installation space 11 v.
As shown in fig. 3, the optical film layer 3 includes a reflective layer 31 and a light guide plate 32 stacked in sequence along a direction away from the back plate body 11.
The invention also provides a display device, which comprises the back plate 1 or the backlight module.
Specifically, the display device comprises the back plate 1, the light source 2, the optical film layer 3 and the display panel 4. Wherein the display panel 4 is located at a side of the optical film layer 3 facing away from the back plate 1.
As shown in fig. 4, in the present embodiment, the optical film layer 3 includes a reflective layer 31, a light guide plate 32, and other optical film layers (not shown) that are sequentially stacked along a direction away from the backplane body 11.
According to the back plate 1, the concave structure 11c is additionally arranged, so that the heat dissipation area of the back plate 1 can be increased, and the heat dissipation efficiency of the back plate 1 is improved; the heat exchange unit 12 is arranged in the concave structure 10, so that the heat dissipation efficiency and the heat exchange efficiency of the back plate 1 are further improved, and heat obtained by the installation space 11v in the back plate body 11 can be quickly and uniformly dispersed, so that the heat distribution uniformity and the integral heat dissipation rate of the back plate 1 are improved, and the back plate 1 is prevented from being too high in temperature or too large in temperature difference; by additionally arranging the vibrating device 1123, the collision of molecules in the first heat exchange device 121 and the heat exchange rate of the first heat exchange device 121 and the second heat exchange device 122 can be improved, and further the heat dissipation effect is improved; by adopting the back plate 1, the overall heat dissipation efficiency and the uniformity of temperature distribution of the backlight module and the display device are improved, the temperature difference is prevented from being larger or the temperature is prevented from being too high, the display quality is improved, and the service life is prolonged.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The backplane, the backlight module and the display device provided by the embodiment of the invention are described in detail, a specific example is applied in the description to explain the principle and the implementation of the invention, and the description of the embodiment is only used for helping to understand the technical scheme and the core idea of the invention; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. A back plate for a backlight module including a light source and an optical film layer
Characterized in that the back plate comprises:
a back plate body formed with a mounting space and a recess structure, wherein the mounting space
The concave structure is formed on the surface of the backboard body, which faces away from the installation space; and the number of the first and second groups,
a heat exchange unit located within the recessed structure and configured to disperse heat obtained via the installation space within the backplane body;
the heat exchange unit comprises a first heat exchange device, the first heat exchange device comprises a first sealing body, a first heat exchange agent filled in the first sealing body and a vibration device, the vibration device is located in the vibration device in the first sealing body, and the first sealing body is at least used for driving the molecular vibration of the first heat exchange agent.
2. The back plate of claim 1, wherein the heat exchange unit further comprises a second heat exchange device, the second heat exchange device is located in the first sealed body and the second heat exchange device comprises a second sealed body and a second heat exchange agent filled in the second sealed body.
3. The backsheet according to claim 2, wherein the first heat exchange agent or the second heat exchange agent is independently selected from a liquid heat exchange agent or a semi-solid heat exchange agent, respectively.
4. The back panel as claimed in claim 1, wherein the back panel body comprises a bottom plate portion and a side plate portion for enclosing the installation space, wherein:
the bottom plate part is used for bearing the optical film layer on one side facing the installation space, and the recessed structure is positioned on the surface of the bottom plate part, which faces away from the installation space;
the side plate portion surrounds the periphery of the bottom plate portion, and one side of the side plate portion facing the installation space is used for bearing the light source.
5. A backboard according to claim 4, wherein the bottom plate portion comprises a bottom plate and a lining plate located on the side of the bottom plate facing away from the installation space, wherein one side edge of the lining plate extends and bends to form the side plate portion, and the concave structure is formed on the surface of the lining plate facing away from the bottom plate.
6. A backlight module, comprising a light source, an optical film layer and the back plate of any one of claims 1-5.
7. A display device, characterized in that the display device comprises the back plate of any one of claims 1-5 or comprises the backlight module of claim 6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010268202.XA CN111326066B (en) | 2020-04-08 | 2020-04-08 | Back plate, backlight module and display device |
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| CN202010268202.XA CN111326066B (en) | 2020-04-08 | 2020-04-08 | Back plate, backlight module and display device |
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| CN111326066A CN111326066A (en) | 2020-06-23 |
| CN111326066B true CN111326066B (en) | 2022-04-26 |
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| CN113487963A (en) * | 2021-08-04 | 2021-10-08 | 业成科技（成都）有限公司 | Display device and electronic apparatus |
| CN114415409B (en) * | 2022-01-26 | 2024-02-02 | 武汉华星光电技术有限公司 | Display module and display device |
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| JP2017161851A (en) * | 2016-03-11 | 2017-09-14 | 三菱電機株式会社 | Display |
| CN107155281B (en) * | 2017-05-12 | 2023-12-05 | 惠州三华工业有限公司 | display device |
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