CN110491284B - Backlight frame, backlight module and display module - Google Patents
Backlight frame, backlight module and display module Download PDFInfo
- Publication number
- CN110491284B CN110491284B CN201910854165.8A CN201910854165A CN110491284B CN 110491284 B CN110491284 B CN 110491284B CN 201910854165 A CN201910854165 A CN 201910854165A CN 110491284 B CN110491284 B CN 110491284B
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- side plate
- frame bottom
- backlight
- frame
- plate
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/0088—Positioning aspects of the light guide or other optical sheets in the package
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0086—Positioning aspects
- G02B6/009—Positioning aspects of the light source in the package
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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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention relates to the technical field of display, and provides a backlight frame, which comprises: the frame comprises a frame bottom, a first side plate, a second side plate and a third side plate, wherein the first side plate is connected to one side of the frame bottom in a bending mode along the first time hand direction; the second side plate is connected to the first side plate in a bending mode along the first time hand direction; the distance from the joint position of the first side plate and the second side plate to the frame bottom is greater than the distance from the joint position of the first side plate and the second side plate to the frame bottom; the third side plate is connected to the second side plate in a bending mode along the second hour hand direction, the third side plate comprises a bonding part bonded with the plate surface of the second side plate and an extending part connected with the bonding part, and the orthographic projection of the extending part is located outside the second side plate; wherein, the first hour hand direction is opposite to the second hour hand direction. The backlight frame can enable the light guide plate to be clamped between the second side plate and the frame bottom by applying force facing the frame bottom to the extending part. In addition, the second side plate and the third side plate are arranged in a double layer mode, so that impact force of the backlight frame on the array substrate can be buffered.
Description
Technical Field
The invention relates to the technical field of display, in particular to a backlight frame, a backlight module and a display module.
Background
The side-in type backlight module generally includes a backlight frame, and a backlight source and a light guide plate disposed in the backlight frame, and one side of the backlight frame is generally provided with a U-like limiting portion. When the backlight module is assembled, the backlight source is usually placed in the U-shaped limiting part, then one end of the light guide plate is arranged in the opening of the U-shaped limiting part, and the other end of the light guide plate is bonded on the backlight frame. The opening width of the U-shaped limiting part is slightly larger than the thickness of the light guide plate, so that the light guide plate can be prevented from moving.
However, when the backlight module is tested in a high temperature and high humidity environment, the volume of the light guide plate is reduced due to the evaporation of water inside the light guide plate. Because the side of the light guide plate far away from the backlight source is bonded on the backlight frame, the side of the guide rail plate facing the backlight source generates a distance with the backlight source due to the reduction of the whole volume. Thereby reducing the light emitting efficiency of the backlight module.
It is noted that the information of the invention in the above background section is only for enhancement of understanding of the background of the invention and therefore may include information that does not constitute prior art that is already known to a person of ordinary skill in the art.
Disclosure of Invention
The invention aims to provide a backlight frame, a backlight module and a display module. The backlight frame can solve the technical problem that the backlight module in the related art is low in luminous efficiency.
Additional features and advantages of the invention will be set forth in the detailed description which follows, or may be learned by practice of the invention.
According to an aspect of the present invention, there is provided a backlight frame, including: the frame bottom, the first side board, the second side board, the third side board. The first side plate is bent and connected to one side of the frame bottom along the first time hand direction; the second side plate is bent and connected to the first side plate along the first time hand direction, so that the second side plate is opposite to the frame bottom; the second side plate comprises an abutting part, and the distance from the abutting position of the first side plate and the second side plate to the frame bottom is greater than the distance from the abutting part to the frame bottom; the third side plate is connected to the second side plate in a bending mode along a second hour hand direction, the third side plate comprises a bonding portion and an extending portion, the bonding portion is bonded with the surface of the second side plate, the extending portion is connected with the bonding portion, and the orthographic projection of the extending portion is located outside the second side plate; wherein the first hour hand direction is opposite to the second hour hand direction.
In an exemplary embodiment of the present invention, the first side plate and the second side plate are flat plate structures;
the first side plate and the frame bottom are connected in a bending mode to form a first bending angle, and the second side plate and the first side plate are connected in a bending mode to form a second bending angle; the sum of the first bending angle and the second bending angle is less than 180 degrees, and the abutting part is formed by the partial structure of the second side plate far away from the first side plate.
In an exemplary embodiment of the invention, the first bending angle is 90 ° and the second bending angle is less than 90 °.
In an exemplary embodiment of the present invention, the second side plate further includes a connecting portion connected between the first side plate and the abutting portion; the first side plate, the connecting part and the abutting part are all of flat plate structures; the first side plate and the frame bottom are connected in a bending mode to form a first bending angle, the connecting portion and the first side plate are connected in a bending mode to form a second bending angle, and the sum of the first bending angle and the second bending angle is smaller than 180 degrees.
In an exemplary embodiment of the present invention, the abutting portion is disposed in parallel with the frame bottom.
In an exemplary embodiment of the present invention, the frame bottom, the first side plate, the second side plate, and the third side plate are an integrated structure.
According to an aspect of the present invention, a backlight module is provided, which includes the above-mentioned backlight frame.
In an exemplary embodiment of the present invention, the backlight module further includes: the reflecting plate is bonded on one side of the abutting part facing the frame bottom; the light measuring source is arranged between the frame bottom and the second side plate; the light guide plate part is clamped between the frame bottom and the light reflecting plate.
According to an aspect of the present invention, a display module is provided, which includes the backlight module and the display panel.
In an exemplary embodiment of the present invention, the display panel includes an array substrate, and the third panel is bonded to the array substrate.
The present disclosure provides a backlight frame, backlight module, display module assembly, this backlight frame it includes: the frame comprises a frame bottom, a first side plate, a second side plate and a third side plate, wherein the first side plate is connected to one side of the frame bottom in a bending mode along the first time hand direction; the second side plate is connected to the first side plate in a bending mode along the first time hand direction; the distance from the joint position of the first side plate and the second side plate to the frame bottom is greater than the distance from the joint position of the first side plate and the second side plate to the frame bottom; the third side plate is connected to the second side plate in a bending mode along the second hour hand direction, the third side plate comprises a bonding part bonded with the plate surface of the second side plate and an extending part connected with the bonding part, and the orthographic projection of the extending part is located outside the second side plate; wherein, the first hour hand direction is opposite to the second hour hand direction. On one hand, when the backlight module is assembled by the backlight frame, the force facing the frame bottom can be applied to the extending part to increase the distance between the abutting part and the frame bottom, and then one side of the light guide plate is arranged between the abutting part and the frame bottom, so that one side of the light guide plate is clamped between the abutting part and the frame bottom. When the back module is tested in a high-temperature high-humidity environment, even if the volume of the light guide plate is reduced, because one side of the light guide plate facing the side light source is clamped by the abutting part and the frame bottom, no gap or small gap is generated between the light guide plate and the side light source. On the other hand, the second side plate and the third side plate of the backlight frame are arranged in a double-layer mode, and when the backlight frame generates impact force on the array substrate, the second side plate and the third side plate arranged in the double-layer mode can disperse, absorb and buffer the impact force.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic diagram of a display module according to the related art;
FIG. 2 is a schematic diagram of an exemplary embodiment of a backlight frame of the present disclosure;
FIGS. 3-5 are schematic views of an assembly structure of an exemplary embodiment of a backlight frame of the present disclosure;
FIG. 6 is a schematic structural diagram of a display module applied to an exemplary embodiment of a backlight frame according to the present disclosure;
FIG. 7 is a schematic structural diagram of another exemplary embodiment of a backlight frame of the present disclosure;
FIG. 8 is a schematic structural diagram of another exemplary embodiment of a backlight frame of the present disclosure;
FIG. 9 is a schematic structural diagram of another exemplary embodiment of a backlight frame of the present disclosure;
fig. 10 is a schematic structural diagram of another exemplary embodiment of a backlight frame of the present disclosure.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.
Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". Other relative terms, such as "high," "low," "top," "bottom," "left," "right," and the like are also intended to have similar meanings. When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.
The terms "a," "an," "the," and the like are used to denote the presence of one or more elements/components/parts; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.
As shown in fig. 1, a schematic structural diagram of a display module in the related art is shown, where the display module includes a backlight module and a display panel. The display panel includes a lower polarizer 21, an array substrate 22, a color film substrate 23, an upper polarizer 24, a flexible circuit board 25 with an active electrode driving circuit attached thereto, and a control IC 26. The backlight module comprises a backlight frame 11, a backlight source 12, a flexible circuit board 13 for driving the backlight source, a light guide plate 14, a light reflecting bottom plate 15 positioned at the bottom of the light guide plate 14, a light module layer 16 and a rubber frame 19 for supporting an array substrate 22, wherein the light guide plate 14 can be bonded on the backlight frame through an adhesive tape 17. In the related art, as shown in fig. 1, a U-like limiting portion is generally disposed on one side of the backlight frame 11, the U-like limiting portion includes a first side plate 111, a second side plate 112, and a third side plate 113, the backlight source 12 is disposed in the U-like limiting portion, one end of the light guide plate 14 is disposed in an opening of the U-like limiting portion, and the other end is bonded to the bottom of the backlight frame 1 through an adhesive tape 17. The opening width (the distance between the first side plate and the third side plate) of the U-shaped limiting part is slightly larger than the thickness of the light guide plate, so that the light guide plate can be prevented from moving longitudinally on the basis of containing the light guide plate. In addition, the third side plate 113 of the U-like position-limiting portion is adhered to the array substrate 22 by an adhesive tape, and a light-reflecting plate 18 is disposed on a side of the third side plate 113 facing the backlight 12 to prevent light from leaking.
However, when the backlight module is tested in a high temperature and high humidity environment, the volume of the light guide plate 14 is reduced due to the evaporation of water inside the light guide plate 14. Because the side of the light guide plate far away from the backlight source is bonded on the backlight frame through the adhesive tape 17, the side of the guide rail plate facing the backlight source is separated from the backlight source due to the reduction of the whole volume, thereby reducing the light emitting efficiency of the backlight module.
Based on this, the present exemplary embodiment provides a backlight frame, as shown in fig. 2, which is a schematic structural diagram of an exemplary embodiment of the backlight frame of the present disclosure. The backlight frame includes: a frame bottom 34, a first side plate 31, a second side plate 32, and a third side plate 33. The first side plate 31 is bent and connected to one side of the frame bottom 34 along the first clock direction; the second side plate 32 is bent and connected to the first side plate 31 along the first clock direction, so that the second side plate 32 is disposed opposite to the frame bottom 34; the second side plate 32 comprises an abutting part 321, and the distance from the position where the first side plate 31 and the second side plate 32 meet to the frame bottom 34 is greater than the distance from the abutting part 321 to the frame bottom 34; the third side plate 33 is connected to the second side plate 32 in a bending manner along the second hour hand direction, the third side plate 33 includes a joint portion 331 jointed to the plate surface of the second side plate 32, and an extension portion 332 connected to the joint portion 331, and an orthogonal projection of the extension portion 332 is located outside the second side plate 32; wherein the first hour hand direction is opposite to the second hour hand direction.
The present disclosure provides a backlight frame, as shown in fig. 3 to 5, which is an assembly structure diagram of an exemplary embodiment of the backlight frame of the present disclosure. On the other hand, as shown in fig. 3, when the backlight module is assembled by the backlight frame, a force F facing the frame bottom 34 can be applied to the extending portion 332 to increase the distance between the abutting portion 321 and the frame bottom 34. As shown in fig. 4, the backlight 41 may be disposed between the second side plate 32 and the frame bottom 34, and one end of the light guide plate 42 may be disposed between the abutting portion 321 and the frame bottom 34. As shown in fig. 5, the force F is canceled, so that the one end of the light guide plate 42 is sandwiched between the abutting portion 321 and the frame bottom 34. As shown in fig. 5, the light reflecting plate 43 may be fixed to the side of the contact portion 321 facing the frame bottom 34 by an adhesive layer 44, and the contact portion 321 may contact the light guide plate 42 via the light reflecting plate 43. The light reflecting plate 43 has a first bending capability, so that the surface of the light reflecting plate 43 is abutted to the surface of the light guide plate 42. When the back module is tested in a high-temperature and high-humidity environment, even if the volume of the light guide plate 42 is reduced, the side of the light guide plate 42 facing the side light source is clamped by the abutting part and the frame bottom, so that the gap between the light guide plate and the side light source can be avoided or reduced. In the present exemplary embodiment, as shown in fig. 4, an end of the light guide plate 42 away from the backlight 41 may be further bonded to the frame bottom 34 by an adhesive layer 45, so as to further fix the light guide plate 42. It should be understood that, in other exemplary embodiments, the light guide plate may not be disposed between the light guide plate and the frame bottom 34, and the light guide plate may be fixed to the frame bottom 34 only by the abutting portion 321.
On the other hand, as shown in fig. 6, which is a schematic structural view of a display module assembly in an exemplary embodiment of the backlight frame of the present disclosure, the third side plate 33 of the backlight frame may be bonded to the array substrate 5 by an adhesive tape 6, and since the second side plate 32 and the third side plate 33 of the backlight frame are arranged in two layers, when an impact force is generated to the array substrate by the backlight frame, the impact force may be dispersed, absorbed, and buffered by the second side plate and the third side plate arranged in two layers.
As shown in fig. 2 to 6, in the present exemplary embodiment, the first side plate 31 and the second side plate 32 may be flat plate structures; the first side plate 31 and the frame bottom 32 are connected in a bending manner to form a first bending angle, and the second side plate 32 and the first side plate 31 are connected in a bending manner to form a second bending angle; the sum of the first bending angle and the second bending angle is less than 180 °, and the abutting portion 321 is formed by a partial structure of the second side plate away from the first side plate. Wherein the first bending angle may be 90 ° and the second bending angle may be less than 90 °. It should be understood that in other exemplary embodiments, the first bending angle and the second bending angle may be other angles. For example, as shown in fig. 7, a schematic structural diagram of another exemplary embodiment of the backlight frame of the present disclosure is shown, wherein the first bending angle is an acute angle, and the second bending angle is a right angle.
In the present exemplary embodiment, the first side plate 31 and the second side plate 32 may have other structures. For example, as shown in fig. 8, a schematic structural diagram of another exemplary embodiment of the backlight frame of the present disclosure is shown. The first side plate 31 may also be an arc-shaped plate structure, and the arc-shaped plate is connected between the frame bottom 34 and the second side plate 32. For another example, as shown in fig. 9, it is a schematic structural diagram of another exemplary embodiment of the backlight frame of the present disclosure. The second side plate 32 may further include a connecting portion 322, and the connecting portion 322 is connected between the first side plate 31 and the abutting portion 321; the first side plate 31, the connecting portion 322 and the abutting portion 321 may be of a flat plate structure; the first side plate 31 and the frame bottom 34 are bent and connected to form a first bending angle, the connecting portion and the first side plate are bent and connected to form a second bending angle, and the sum of the first bending angle and the second bending angle may be less than 180 °. The abutting portion 321 and the frame bottom 34 may be disposed in parallel. The reflector can be prevented from being bent, so that the yield rate reduction caused by bending of the reflector is avoided. For another example, as shown in fig. 10, which is a schematic structural diagram of another exemplary embodiment of the backlight frame of the present disclosure, the first side plate 31 may also be an arc-shaped plate structure, the second side plate 32 may also include a connecting portion 322, and the connecting portion 322 is connected between the first side plate 31 and the abutting portion 321; the first side plate 31, the connecting portion 322 and the abutting portion 321 may be of a flat plate structure; the first side plate 31 and the frame bottom 34 are bent and connected to form a first bending angle, the connecting portion and the first side plate are bent and connected to form a second bending angle, and the sum of the first bending angle and the second bending angle may be less than 180 °. The abutting portion 321 and the frame bottom 34 may be disposed in parallel.
In the exemplary embodiment, the frame bottom, the first side plate, the second side plate, and the third side plate are an integrated structure. The frame bottom, the first side plate, the second side plate and the third side plate can be formed by bending an integral flat plate structure.
The exemplary embodiment further provides a backlight module, which includes the backlight frame.
In an exemplary embodiment of the present invention, the backlight module may further include: the reflecting plate is bonded on one side of the abutting part facing the frame bottom; the light measuring source is arranged between the frame bottom and the second side plate; the light guide plate part is clamped between the frame bottom and the light reflecting plate.
The backlight module provided by the present exemplary embodiment has the same technical features and working principles as the backlight frame, and the above contents have been described in detail and are not described again here.
The exemplary embodiment further provides a display module, which includes the backlight module and the display panel.
In an exemplary embodiment of the present invention, the display panel includes an array substrate, and the third panel is bonded to the array substrate.
The display module provided by the exemplary embodiment has the same technical features and working principles as the backlight module, and the above contents have already been described in detail and are not repeated herein.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is to be limited only by the terms of the appended claims.
Claims (4)
1. The utility model provides a backlight module which characterized in that, backlight module includes backlight frame, tie coat, reflector panel, side light source, light guide plate, backlight frame includes:
a frame bottom;
the first side plate is bent and connected to one side of the frame bottom along the first time hand direction;
the second side plate is bent and connected to the first side plate along the first clock hand direction, so that the second side plate is opposite to the frame bottom;
the second side plate comprises an abutting part, and the distance from the joint position of the first side plate and the second side plate to the frame bottom is greater than the distance from the abutting part to the frame bottom;
the third side plate is connected to the second side plate in a bending mode along a second hour hand direction and comprises a joint part and an extension part, the joint part is jointed with the plate surface of the second side plate, the extension part is connected with the joint part, and the orthographic projection of the extension part on the plane of the frame bottom does not intersect with the orthographic projection of the second side plate on the plane of the frame bottom;
wherein the first hour hand direction is opposite to the second hour hand direction;
the frame bottom, the first side plate, the second side plate and the third side plate are of an integral structure;
the second side plate further comprises a connecting part which is connected between the first side plate and the abutting part;
the first side plate, the connecting part and the abutting part are all of flat plate structures;
the first side plate and the frame bottom are connected in a bending mode to form a first bending angle, the connecting portion and the first side plate are connected in a bending mode to form a second bending angle, and the sum of the first bending angle and the second bending angle is smaller than 180 degrees;
the part of the second side plate, which is far away from the first side plate, forms the abutting part, and the abutting part is arranged in parallel with the frame bottom;
the light guide plate is arranged between the frame bottom and the second side plate, and the light guide plate is clamped between the frame bottom and the light reflecting plate.
2. The backlight module according to claim 1,
the first bending angle is 90 degrees, and the second bending angle is smaller than 90 degrees.
3. A display module comprising the backlight module of claim 1 or 2 and a display panel.
4. The display module of claim 3, wherein the display panel comprises an array substrate, and the third panel is bonded to the array substrate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910854165.8A CN110491284B (en) | 2019-09-10 | 2019-09-10 | Backlight frame, backlight module and display module |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910854165.8A CN110491284B (en) | 2019-09-10 | 2019-09-10 | Backlight frame, backlight module and display module |
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| CN110491284A CN110491284A (en) | 2019-11-22 |
| CN110491284B true CN110491284B (en) | 2022-09-16 |
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| CN113885257B (en) * | 2021-11-12 | 2024-04-16 | 高创(苏州)电子有限公司 | Backlight module, preparation method thereof and display device |
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| CN107728380A (en) * | 2017-11-20 | 2018-02-23 | 北京小米移动软件有限公司 | Backlight module and display device |
| TW201932941A (en) * | 2018-01-17 | 2019-08-16 | 日商歐姆龍股份有限公司 | Surface light source device, display device, and electronic device |
| CN208978506U (en) * | 2018-08-28 | 2019-06-14 | 安徽瑞福文具有限公司 | A kind of multi-functional dovetail clip of high tenacity |
| CN109031786A (en) * | 2018-08-31 | 2018-12-18 | 厦门天马微电子有限公司 | A kind of backboard of backlight module, backlight module and display module |
| CN109901322A (en) * | 2019-04-04 | 2019-06-18 | 深圳创维－Rgb电子有限公司 | Display module |
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