CN107166248B - Display screen and display device - Google Patents

Display screen and display device Download PDF

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Publication number
CN107166248B
CN107166248B CN201710494338.0A CN201710494338A CN107166248B CN 107166248 B CN107166248 B CN 107166248B CN 201710494338 A CN201710494338 A CN 201710494338A CN 107166248 B CN107166248 B CN 107166248B
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CN
China
Prior art keywords
bottom plate
frame bottom
back frame
light bar
light
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Active
Application number
CN201710494338.0A
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Chinese (zh)
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CN107166248A (en
Inventor
刘群龙
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wuhan Tianma Microelectronics Co Ltd
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Wuhan Tianma Microelectronics Co Ltd
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Priority to CN201710494338.0A priority Critical patent/CN107166248B/en
Publication of CN107166248A publication Critical patent/CN107166248A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
    • F21V29/89—Metals
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336—Illuminating devices
    • G02F1/133602—Direct backlight
    • G02F1/133608—Direct backlight including particular frames or supporting means

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)
  • Liquid Crystal (AREA)

Abstract

The invention discloses a backlight module and a display device, wherein the backlight module comprises: the light guide plate comprises a light incident side; the light bar is arranged on the light incident side of the light guide plate and comprises a light bar substrate and a light emitting unit arranged on the light bar substrate, and the light bar substrate is a metal substrate; the back frame comprises a back frame bottom plate, the light bar substrate and the back frame bottom plate are provided with an overlapping area in the first direction, the first direction is perpendicular to the back frame bottom plate, the back frame bottom plate and the light bar substrate are attached to the overlapping area, and the back frame bottom plate is provided with an opening in the overlapping area. The backlight module and the display device provided by the embodiment of the invention can lead out heat generated by the backlight source during light emitting in time, and have good heat dissipation effect.

Description

Display screen and display device
Technical Field
The invention relates to the technical field of display, in particular to a display screen and a display device comprising the same.
Background
With the continuous development of display technologies, the requirements of consumers on display screens are continuously improved, various display layers are not grouped, and rapid development is achieved, for example, display screens such as liquid crystal display screens and organic light emitting display screens, and on the basis, display technologies such as 3D display, touch display technology, curved display, ultrahigh resolution display and peep-proof display are continuously emerging to meet the requirements of consumers.
in a liquid crystal display, a backlight source is generally provided for a display panel through a backlight module, and the backlight source is connected to an external circuit through a flexible circuit board connected thereto to supply a current thereto. However, when the backlight is emitting light, heat is generated, and the temperature of the display screen is raised due to the heat accumulation, so that other elements inside the display screen are heated, and display unevenness is generated.
Disclosure of Invention
In view of this, the present invention provides a backlight module and a display device, which can guide out heat generated by a backlight source when the backlight source emits light in time, so that the display device has a good display effect.
In one aspect, the present invention provides a backlight module, including a light guide plate, the light guide plate including a light incident side; the light bar is arranged on the light incident side of the light guide plate and comprises a light bar substrate and a light emitting unit arranged on the light bar substrate, and the light bar substrate is a metal substrate; the back frame comprises a back frame bottom plate, the light bar substrate and the back frame bottom plate are provided with an overlapping area in the first direction, the first direction is perpendicular to the back frame bottom plate, the back frame bottom plate and the light bar substrate are attached to the overlapping area, and the back frame bottom plate is provided with an opening in the overlapping area.
Another aspect of the embodiments of the present invention provides a display device, including the backlight module described above.
As can be seen from the above description, in the backlight module and the display device provided in the embodiments of the present invention, the light bar substrate in the backlight module is a metal substrate, and the back frame bottom plate attached to the light bar substrate is provided with an opening, on one hand, the metal substrate has a good electrical conductivity and can rapidly conduct heat generated by the light emitting unit when emitting light, and on the other hand, the back frame bottom plate is provided with an opening corresponding to the light bar substrate, and the opening can further conduct heat on the metal substrate to the outside, so that a good heat dissipation effect is achieved. The normal display of the display device is ensured.
drawings
Fig. 1 is a schematic structural diagram of a backlight module according to an embodiment of the present invention;
fig. 2 is a partial schematic view of a backlight module according to an embodiment of the invention;
FIG. 3 is a schematic view of a portion of another backlight module according to an embodiment of the invention;
FIG. 4 is a schematic view of a portion of a backlight module according to another embodiment of the present invention;
FIG. 5 is a schematic view of a portion of a backlight module according to another embodiment of the present invention;
Fig. 6 is a schematic diagram of a display device according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, the present invention is further described with reference to the accompanying drawings and examples.
it should be noted that in the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of ways different from those described herein and similar generalizations can be made by those skilled in the art without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
referring to fig. 1, fig. 1 is a schematic structural diagram of a backlight module according to an embodiment of the present invention, in which a backlight module 10 includes a light guide plate 100, the light guide plate includes a light incident side 101; the light bar 110 is arranged on the light incident side 101 of the light guide plate 100, the light bar 110 comprises a light bar substrate 111 and a light emitting unit 112 arranged on the light bar substrate 111, and the light bar substrate 111 is a metal substrate; the back frame 120, the back frame 120 includes a back frame bottom plate 121, the light bar substrate 111 and the back frame bottom plate 121 have an overlapping region 130 in a first direction X, the first direction X is perpendicular to the back frame bottom plate 121, the back frame bottom plate 121 and the light bar substrate 111 are attached to each other in the overlapping region 130, and the back frame bottom plate 121 has an opening 122 in the overlapping region 130. As shown in fig. 1, a reflective sheet 140 is further disposed between the light guide plate 100 and the back frame bottom plate 121.
As can be seen from the above description, in the backlight module provided in the embodiments of the present invention, the light bar substrate in the backlight module is a metal substrate, and the back frame bottom plate attached to the light bar substrate is provided with an opening, on one hand, the metal substrate has good conductivity and can rapidly guide out heat generated by the light emitting unit when emitting light, and on the other hand, the back frame bottom plate is provided with an opening corresponding to the light bar substrate, and the opening is configured to further guide the heat on the metal substrate to the outside, thereby achieving a good heat dissipation effect. The normal display of the display device is ensured.
Optionally, in this embodiment, the light bar substrate 111 is an aluminum substrate or an aluminum alloy substrate, and aluminum or an aluminum alloy has a good heat dissipation effect, so that heat generated by the light emitting unit can be quickly conducted out. In other embodiments of the present embodiment, the light bar substrate 111 may also be made of other materials, which is not limited in the present embodiment.
In addition, optionally, the opening 122 on the back frame bottom plate 121 is located in a region where the back frame bottom plate 121 and the light bar substrate 111 are attached to each other, so that heat on the light bar can be conducted out of the outside more quickly. Meanwhile, optionally, in this embodiment, the shape of the opening 122 may be one of a rectangle, multiple deformations, a circle, or an ellipse, or may be other shapes, which is not particularly limited in this embodiment.
Referring to fig. 2, fig. 2 is a partial schematic view of a backlight module according to an embodiment of the present invention, wherein, optionally, in the embodiment, the light bar substrate 111 includes a first portion 1111 and a second portion 1112, the height of the first portion 1111 in the first direction X is greater than the height of the second portion 1112 in the first direction X, and the light emitting unit 112 is disposed on the first portion 1111, such that the light bar is configured to have a "Z" shape in the cross section as shown in fig. 2, such that on one hand, the light bar can extend to the outside of the back frame and be connected to an external circuit, on the other hand, the light bar substrate 111 can be sufficiently attached to the back frame bottom plate 121, and the attachment area between the two is large, so that heat can be sufficiently conducted out.
With reference to fig. 2, in an alternative embodiment of the present embodiment, the first portion 1111 and the second portion 1112 of the light bar substrate 111 are both attached to the bottom plate of the back frame, and at this time, the light bar substrate 111 may be cast and designed to have the aforementioned "Z" shape.
In addition, referring to fig. 3, fig. 3 is a partial schematic view of another backlight module according to an embodiment of the present invention, wherein a predetermined distance L is provided between the light bar substrate 111 and the back frame bottom plate 121 in the first direction X, and the second portion 1121 is attached to the back frame bottom plate 121, at this time, the light bar substrate 111 may be manufactured into a "Z" shaped structure shown in the drawing by using a metal plate method.
Referring to fig. 4, fig. 4 is a partial schematic view of another backlight module according to an embodiment of the disclosure, wherein the light bar substrate 111 includes a first side surface 1101 perpendicular to the back frame bottom plate 121, the first side surface 1101 is opposite to the light incident side 101 of the light guide plate 100, and the light emitting unit 112 is disposed on the first side surface 1101.
In another alternative implementation manner of this embodiment, referring to fig. 5, fig. 5 is a partial schematic view of another backlight module provided in the embodiment of the present invention, wherein the light bar substrate 111 further includes a first surface 131 attached to the back frame bottom plate 121 and a second surface 132 away from the back frame bottom plate 121, and a hollow area is provided between the first surface 131 and the second surface 132, and the hollow area is configured to enable heat to be more easily released to an external environment.
Another aspect of the embodiments of the present invention further provides a display device, including the backlight module in any one of the above embodiments. As shown in fig. 6, fig. 6 is a schematic view of a display device according to an embodiment of the present invention, where the display device 20 includes a backlight module 10, where the backlight module is a backlight module in any of the above embodiments, and the display device may be a display device such as a television, a notebook computer, a mobile phone, and an intelligent wearable display, which is not limited in this respect in the embodiment of the present invention.
As can be seen from the above description, in the backlight module and the display device provided in the embodiments of the present invention, the light bar substrate in the backlight module is a metal substrate, and the back frame bottom plate attached to the light bar substrate is provided with an opening, on one hand, the metal substrate has a good electrical conductivity and can rapidly guide out heat generated by the light emitting unit when emitting light, and on the other hand, the back frame bottom plate is provided with an opening corresponding to the light bar substrate, and the opening is configured to further guide the heat on the metal substrate to the outside, so that a good heat dissipation effect is achieved, and normal display of the display device is ensured.
The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims (11)

1. A backlight module, comprising:
the light guide plate comprises a light incident side;
The light bar is arranged on the light incident side of the light guide plate and comprises a light bar substrate and a light emitting unit arranged on the light bar substrate, and the light bar substrate is a metal substrate;
The back frame comprises a back frame bottom plate, the light bar substrate and the back frame bottom plate are provided with an overlapping area in a first direction, the first direction is perpendicular to the back frame bottom plate, the back frame bottom plate and the light bar substrate are mutually attached in the overlapping area, and the back frame bottom plate is provided with an opening in the overlapping area;
The lamp strip base plate still includes the first surface of laminating mutually with back of the body frame bottom plate and keeps away from the second surface of back of the body frame bottom plate, and perpendicular to the first side of back of the body frame bottom plate, first side with the income light side of light guide plate is relative, light emitting unit set up in on the first side, the first surface with a hollow area has between the second surface on the first direction, the opening with hollow area is relative.
2. The backlight module of claim 1, wherein the light bar substrate is an aluminum substrate or an aluminum alloy substrate.
3. the backlight module of claim 1, wherein the opening is located in a region where the back frame bottom plate and the light bar substrate are attached to each other.
4. A backlight module according to claim 1 or 3, wherein the opening has a shape of one of a rectangle, a polygon, a circle or an ellipse.
5. The backlight module of claim 1, wherein the light bar substrate comprises a first portion and a second portion, and the height of the first portion in the first direction is greater than the height of the second portion in the first direction;
the light emitting unit is disposed on the first portion.
6. The backlight module of claim 5, wherein the first portion and the second portion of the light bar substrate are both attached to the back frame bottom plate.
7. The backlight module of claim 5, wherein the first portion of the light bar substrate is spaced from the back frame bottom plate by a predetermined distance in the first direction, and the second portion is attached to the back frame bottom plate.
8. The backlight module of claim 1, wherein the light bar substrate comprises a first side surface perpendicular to the back frame bottom plate, the first side surface is opposite to the light incident side of the light guide plate, and the light emitting unit is disposed on the first side surface.
9. The backlight module of claim 8, wherein the light bar substrate further comprises a first surface attached to the back frame bottom plate and a second surface away from the back frame bottom plate.
10. The backlight module of claim 9, wherein a hollow area is disposed between the first surface and the second surface of the light bar substrate.
11. A display device, characterized in that the display device comprises a backlight module according to claims 1-10.
CN201710494338.0A 2017-06-26 2017-06-26 Display screen and display device Active CN107166248B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710494338.0A CN107166248B (en) 2017-06-26 2017-06-26 Display screen and display device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710494338.0A CN107166248B (en) 2017-06-26 2017-06-26 Display screen and display device

Publications (2)

Publication Number Publication Date
CN107166248A CN107166248A (en) 2017-09-15
CN107166248B true CN107166248B (en) 2019-12-13

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Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102494259A (en) * 2011-12-01 2012-06-13 深圳市华星光电技术有限公司 Light-emitting diode (LED) lamp strip and backlight module for liquid crystal display device
CN102563459B (en) * 2011-12-13 2014-06-11 深圳市华星光电技术有限公司 Backlight module and liquid crystal display device
CN102588842A (en) * 2012-02-28 2012-07-18 达运精密工业（苏州）有限公司 Side light type backlight module and liquid crystal display device using same
CN102798095B (en) * 2012-09-07 2014-07-09 深圳市华星光电技术有限公司 Hollow backboard and backlight module utilizing same
CN204300865U (en) * 2015-01-08 2015-04-29 京东方科技集团股份有限公司 A kind of liquid crystal indicator and backlight module thereof

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