CN114326207A - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
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- CN114326207A CN114326207A CN202111615030.XA CN202111615030A CN114326207A CN 114326207 A CN114326207 A CN 114326207A CN 202111615030 A CN202111615030 A CN 202111615030A CN 114326207 A CN114326207 A CN 114326207A
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Abstract
The embodiment of the invention discloses a backlight module and a display device, wherein the backlight module comprises: the back plate comprises a bottom plate and a side plate which form an accommodating space; the first reflector plate is arranged on the bottom plate; the light source is arranged on the first reflector plate; the rubber frame is connected with the back plate and comprises a front baffle plate, a side baffle plate and a connecting plate for connecting the front baffle plate and the side baffle plate, and the side plate is positioned between the front baffle plate and the side baffle plate and below the connecting plate; the second reflector plate is arranged on the connecting plate; and the transparent spacer is arranged on the second reflecting sheet. According to the invention, the transparent shock insulator is arranged on the rubber frame, so that light can enter the edge of the panel close to the rubber frame; and simultaneously the second reflector plate is arranged below the transparent spacer, and light can be emitted from the edge of the panel close to the rubber frame through the reflection of the second reflector plate, so that the problem of dark edge of the panel picture is solved.
Description
Technical Field
The invention relates to the field of display panels, in particular to a backlight module and a display device.
Background
Among flat panel Display devices, a Thin Film Transistor liquid crystal Display (TFT-LCD) has the characteristics of small volume, low power consumption, relatively low manufacturing cost, no radiation, and the like, and occupies a leading position in the current flat panel Display market.
Currently, a backlight module of a liquid crystal display device generally uses a light-emitting diode (LED) as a light source, and the backlight module can be divided into a direct-down light-entering type and a side-entering type according to a distribution position of the light source. Referring to fig. 1, fig. 1 is a schematic structural diagram of a direct-light-entering backlight module in the prior art, in which a backlight module 100 includes a back plate 10, a first reflector 20, a light source 30, an optical film 40, a diffuser 50, and a rubber frame 60. Because the optical film and the diffusion plate need to be supported and fixed by the rubber frame, and a certain expansion gap needs to be reserved between the diffusion plate and the rubber frame and between the diffusion plate and the optical film and between the diffusion plate and the rubber frame, no light is emitted from the panel at the rubber frame, and poor edge dark edges occur on a picture.
In view of the above, it is necessary to develop a novel backlight module for solving the problem that the edge dark edge is not good on the screen due to no light beam emitted from the panel at the position of the plastic frame.
Disclosure of Invention
The embodiment of the invention provides a backlight module and a display device, which are used for solving the technical problem that the edge dark edge is poor on a picture due to the fact that no light is emitted from a panel at a rubber frame.
In order to solve the above technical problem, the embodiment of the present invention discloses the following technical solutions:
in one aspect, a backlight module is provided, including:
the back plate comprises a bottom plate and a side plate which form an accommodating space;
the first reflector plate is arranged on the bottom plate;
the light source is arranged on the first reflector plate;
the optical diaphragm is arranged above the light source;
the rubber frame is connected with the back plate and comprises a front baffle plate, a side baffle plate and a connecting plate for connecting the front baffle plate and the side baffle plate, the side plate is positioned between the front baffle plate and the side baffle plate and below the connecting plate, the optical diaphragm is arranged on the inner side of the front baffle plate of the rubber frame, and the rubber frame is used for fixing the optical diaphragm;
the second reflector plate is arranged on the connecting plate and is positioned below the optical diaphragm;
and the transparent spacer is arranged on the second reflecting sheet and is positioned below the optical diaphragm.
The transparent shock insulator is arranged on the rubber frame, so that light can enter the edge of the panel close to the rubber frame; and simultaneously the second reflector plate is arranged below the transparent spacer, and light can be emitted from the edge of the panel close to the rubber frame through the reflection of the second reflector plate, so that the problem of dark edge of the panel picture is solved.
In addition to or in the alternative to one or more features disclosed above, a surface of the first reflective sheet facing away from the bottom plate is a reflective surface of the first reflective sheet, a surface of the second reflective sheet facing away from the connecting plate is a reflective surface of the second reflective sheet, and an extending surface of the connecting plate is parallel to a reflective surface of the second reflective sheet.
In addition to or in the alternative to one or more features disclosed above, an extension plane of the connection plate is parallel to the reflection plane of the first reflection sheet, and an axis of symmetry of the reflection plane of the second reflection sheet is perpendicular to the reflection plane of the first reflection sheet.
In addition to or in lieu of one or more of the features disclosed above, the extending surface of the connecting plate is inclined with respect to the reflecting surface of the first reflecting sheet, and an axis of symmetry of the reflecting surface of the second reflecting sheet is at an angle of less than 90 degrees with respect to the reflecting surface of the first reflecting sheet.
In addition to or in the alternative to one or more of the features disclosed above, an extension plane of the bottom panel is perpendicular to an extension plane of the side panel, and an extension plane of the front barrier is parallel to the extension plane of the side panel.
In addition to or in the alternative to one or more of the features disclosed above, the front baffle, the side baffles and the connecting plate are of unitary construction.
In addition or alternatively to one or more of the features disclosed above, a third reflective sheet is further included and is disposed between the front barrier of the bezel and the transparent spacer. The symmetry axis of the reflecting surface of the third reflecting sheet is parallel to the reflecting surface of the first reflecting sheet.
In addition to or in the alternative to one or more of the features disclosed above, a surface of the transparent spacer facing the second reflective sheet is provided with a plurality of light guide dots.
In addition to or in the alternative to one or more of the features disclosed above, the light guide dots are uniformly provided on the surface of the transparent spacer facing the second reflective sheet.
In addition to or in lieu of one or more of the features disclosed above, the light directing dots are printed or injection molded.
In addition to or in the alternative to one or more of the features disclosed above, a distribution density of the light guiding dots near the front bezel is greater than a distribution density of the light guiding dots away from the front bezel.
In addition to or in the alternative to one or more features disclosed above, an area of the light guiding dots proximate to the front bezel is larger than an area of the light guiding dots distal from the front bezel.
In addition to or in lieu of one or more of the features disclosed above, the light directing dots are optical light directing ink mixed with UV glue.
In addition to or in lieu of one or more of the features disclosed above, the front bezel of the bezel and the optical film have an expansion gap therebetween.
In addition to or in lieu of one or more of the features disclosed above, the expansion gap width may range from 0.01 to 0.05 mm.
In addition or alternatively to one or more of the features disclosed above, a diffuser plate is included between the optical film and the transparent spacer.
In addition or alternatively to one or more of the features disclosed above, a support post is provided between the first reflective sheet and the diffuser plate for supporting the diffuser plate and the optical film.
In addition to or in lieu of one or more of the features disclosed above, the light source includes an LED light source or a CCFL light source.
In another aspect, there is further disclosed a display device comprising, in addition to or in lieu of one or more of the features disclosed above, a backlight module as described in any of the above; the glass substrate is arranged above the backlight module; the outer frame is arranged on the outer sides of the backlight module and the glass substrate.
One of the above technical solutions has the following advantages or beneficial effects: the transparent shock insulator is arranged on the rubber frame, so that light rays entering the transparent shock insulator can be scattered, and the light rays can enter the panel and are close to the edge of the rubber frame; and set up the second reflector plate in transparent shock insulator below simultaneously, through the reflection of second reflector plate, light can follow the panel and be close to the edge of gluing the frame and jet out, solves the dark problem in edge appears in the panel picture.
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 structural diagram of a backlight module in the prior art;
fig. 2 is a schematic structural diagram of a backlight module provided in embodiment 1 of the present invention;
fig. 3 is a schematic structural diagram of a display device according to embodiment 1 of the present invention;
fig. 4 is a schematic structural diagram of a backlight module provided in embodiment 2 of the present invention;
fig. 5 is a schematic structural diagram of a backlight module provided in embodiment 3 of the present invention;
fig. 6 is a schematic structural diagram of a light guide dot provided in embodiment 4 of the present invention.
Reference numerals:
a backlight module-100; -a back plate-10;
a first reflective sheet-20; a light source-30;
an optical film-40; a diffuser sheet-50;
glue frame-60; a second reflector sheet-70;
transparent spacer-80; a third reflector sheet-90;
support post-66; a bottom plate-11;
a side plate-12; a front baffle-61;
side dam-62; a connecting plate-63;
a light guide dot-81; a display device-1;
a glass substrate-200; an outer frame-300;
foam-400; front frame-310;
side frame-320.
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. 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.
Example 1
Referring to fig. 2, fig. 2 is a schematic structural diagram of a backlight module 100 provided in the present embodiment, the backlight module 100 includes a back plate 10, a first reflective sheet 20, a light source 30, an optical film 40, a diffusion sheet 50, a rubber frame 60, a second reflective sheet 70, and a transparent spacer 80.
The back plate 10 includes a bottom plate 11 and a side plate 12 forming an accommodating space, an extending surface of the bottom plate 11 is perpendicular to an extending surface of the side plate 12, and the bottom plate 11 and the side plate 12 are of an integral structure. The back plate 10 is used for supporting the whole backlight module 100.
The first reflection sheet 20 is disposed on the bottom plate 11, a surface of the first reflection sheet 20 away from the bottom plate 11 is a reflection surface of the first reflection sheet 20, and the reflection surface of the first reflection sheet 20 is parallel to an extension surface of the bottom plate 11.
The light source 30 is disposed on the reflective surface of the first reflective sheet 20, and the light source 30 is an LED light source 30 or a CCFL light source 30.
The diffuser is disposed above the light source 30, the optical film 40 is disposed above the diffuser, and the supporting posts 66 are disposed between the first reflective sheet 20 and the diffuser for supporting the diffuser and the optical film 40.
The rubber frame 60 is connected with the backboard 10, the rubber frame 60 comprises a front baffle 61, a side baffle 62 and a connecting plate 63 which is connected with the front baffle 61 and the side baffle 62, and the front baffle 61, the side baffle 62 and the connecting plate 63 are of an integral structure. The side plate 12 is positioned between the front baffle 61 and the side baffle 62 and below the connecting plate 63, and the extending surface of the front baffle 61 is parallel to the extending surface of the side plate 12.
The optical film 40 and the diffusion plate are provided inside the front barrier 61 of the rubber frame 60, and the rubber frame 60 fixes the optical film 40 and the diffusion plate. In consideration of expansion and contraction of the optical film 40 with temperature and humidity, an expansion gap is formed between the front baffle 61 of the rubber frame 60 and the optical film 40 and the diffusion plate. The expansion gap width ranges from 0.01 to 0.05 mm. The expansion gap is reserved to avoid the optical film 40 from being arched and deformed due to expansion and extrusion, so that the picture quality of the display device is guaranteed.
The second reflective sheet 70 is disposed on the connection plate 63, and the transparent spacer 80 is disposed on the second reflective sheet 70 and under the diffusion plate. The surface of the second reflective sheet 70 away from the connection plate 63 is a reflective surface of the second reflective sheet 70, and the extension surface of the connection plate 63 is parallel to the reflective surface of the second reflective sheet 70. The transparent spacer 80 is closely attached to the reflective surface of the second reflective sheet 70, and the surface of the transparent spacer 80 facing the second reflective sheet 70 is also parallel to the extension surface of the connecting plate 63. Through set up transparent shock insulator 80 on gluey frame 60, the light that gets into transparent shock insulator 80 can scatter for light can get into the panel and be close to the edge of gluey frame 60.
In this embodiment, the extension surface of the connection plate 63 is parallel to the reflection surface of the first reflection sheet 20, the symmetry axis of the reflection surface of the second reflection sheet 70 is perpendicular to the reflection surface of the first reflection sheet 20, the second reflection sheet 70 is arranged below the transparent spacer 80, and light can be emitted from the edge of the panel close to the rubber frame 60 by reflection of the second reflection sheet 70, so that the problem of dark edge of the panel picture is solved.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a display device 1 according to the present embodiment, including the backlight module 100, a glass substrate 200, an outer frame 300, and foam 400.
The glass substrate 200 is disposed above the backlight module 100, and specifically, the glass substrate 200 is disposed above the rubber frame 60, and the rubber frame 60 can support the glass substrate 200.
The outer frame 300 comprises a front frame 310 attached to the upper surface of the glass substrate 200 and a side frame 320 attached to the side plate 12 of the back plate 10, the front frame 310 is perpendicular to the side frame 320, foam 400 is arranged between the front frame 310 and the glass substrate 200, and the foam 400 can play a buffering role and protect the glass substrate 200 from external force collision. The frame 300 can further improve the stability of the whole display device 1, and the whole display device 1 can be fixed by the frame 300 and the back plate 10.
The backlight module 100 is used for providing a light source 30 for a display panel, and the display panel is used for displaying images.
Example 2
The backlight module 100 in this embodiment is also provided with a second reflective sheet 70 and a transparent spacer 80, which are substantially the same as the corresponding structures in embodiment 1, and the same structures can refer to the corresponding descriptions in embodiment 1, and are not repeated herein. The main difference between the two is that the extending surface of the connecting plate 63 is inclined with respect to the reflecting surface of the first reflecting sheet 20, and the angle between the symmetry axis of the reflecting surface of the second reflecting sheet 70 and the reflecting surface of the first reflecting sheet 20 is smaller than 90 degrees.
Referring to fig. 4, fig. 4 is a schematic structural diagram of the backlight module 100 provided in this embodiment, the symmetric axis of the reflection surface of the second reflection sheet 70 deviates from the direction of the front baffle 61 of the plastic frame 60, so that more light rays can be emitted from the edge of the panel close to the plastic frame 60, and the brightness of the edge of the panel is further improved.
The embodiment also provides a display device, which comprises the backlight module, the glass substrate, the outer frame and the foam.
Example 3
The backlight module 100 in this embodiment is also provided with a second reflective sheet 70 and a transparent spacer 80, which are substantially the same as the corresponding structures in embodiment 2, and the same structures can refer to the corresponding descriptions in embodiment 2, and are not described herein again. The main difference between the two is that the backlight module 100 in this embodiment further includes a third reflective sheet 90, the third reflective sheet 90 is disposed between the front barrier 61 of the rubber frame 60 and the transparent spacer 80, and a symmetry axis of a reflective surface of the third reflective sheet 90 is parallel to the reflective surface of the first reflective sheet 20.
Referring to fig. 5, fig. 5 is a schematic structural view of the backlight module 100 provided in this embodiment, and by providing the third reflective sheet 90, more light can be emitted from the edge of the panel close to the rubber frame 60, so as to further improve the brightness of the edge of the panel.
The embodiment also provides a display device, which comprises the backlight module, the glass substrate, the outer frame and the foam.
Example 4
The backlight module 100 in this embodiment is also provided with a second reflective sheet 70, a third reflective sheet 90 and a transparent spacer 80, which are substantially the same as the corresponding structures in embodiment 3, and the same structures can refer to the corresponding descriptions in embodiment 3, and are not described herein again. The main difference between the two is that the surface of the transparent spacer 80 facing the second reflective sheet 70 is provided with a plurality of light guide dots 81.
Referring to fig. 6, fig. 6 is a schematic structural diagram of a light guide dot 81 provided in this embodiment, the light guide dot 81 is a printed light guide dot 81, specifically, the light guide dot 81 is printed by an optical light guide ink mixed with UV glue. In other embodiments, the light guide dots 81 may also be injection molded light guide dots 81.
In the present embodiment, the distribution density of the light guide dots 81 near the front barrier 61 is greater than the distribution density of the light guide dots 81 far from the front barrier 61. In other embodiments, the light guide dots 81 may also be uniformly disposed on the surface of the transparent spacer 80 facing the second reflective sheet 70. However, the greater the distribution density of the light guide dots 81 is, the more light is reflected by the second reflective sheet 70, and the light guide dots 81 with different distribution densities in this embodiment can enable more light to be emitted from the edge of the panel close to the rubber frame 60, so as to further improve the brightness of the edge of the panel.
The larger the area of the light guide dots 81 is, the more light is reflected by the second reflective sheet 70, so that the technical effect of the embodiment can also be achieved by setting the area of the light guide dots 81 near the front barrier 61 to be larger than the area of the light guide dots 81 far from the front barrier 61.
The embodiment also provides a display device, which comprises the backlight module, the glass substrate, the outer frame and the foam.
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 (10)
1. A backlight module, comprising:
the back plate comprises a bottom plate and a side plate which form an accommodating space;
the first reflector plate is arranged on the bottom plate;
the light source is arranged on the first reflector plate;
the optical diaphragm is arranged above the light source;
the rubber frame is connected with the back plate and comprises a front baffle plate, a side baffle plate and a connecting plate for connecting the front baffle plate and the side baffle plate, the side plate is positioned between the front baffle plate and the side baffle plate and below the connecting plate, the optical diaphragm is arranged on the inner side of the front baffle plate of the rubber frame, and the rubber frame is used for fixing the optical diaphragm;
the second reflector plate is arranged on the connecting plate and is positioned below the optical diaphragm;
and the transparent spacer is arranged on the second reflecting sheet and is positioned below the optical diaphragm.
2. The backlight module as claimed in claim 1, wherein a surface of the first reflective sheet away from the bottom plate is a reflective surface of the first reflective sheet, a surface of the second reflective sheet away from the connecting plate is a reflective surface of the second reflective sheet, and an extending surface of the connecting plate is parallel to the reflective surface of the second reflective sheet.
3. The backlight module according to claim 2, wherein the extension plane of the connection plate is parallel to the reflection plane of the first reflection sheet, and the symmetry axis of the reflection plane of the second reflection sheet is perpendicular to the reflection plane of the first reflection sheet.
4. The backlight module according to claim 2, wherein the extension surface of the connection plate is inclined with respect to the reflection surface of the first reflection sheet, and an angle between a symmetry axis of the reflection surface of the second reflection sheet and the reflection surface of the first reflection sheet is less than 90 degrees.
5. The backlight module of claim 1, further comprising
And the third reflector plate is arranged between the front baffle of the rubber frame and the transparent shock insulator.
6. The backlight module as claimed in claim 1, wherein the surface of the transparent spacer facing the second reflective sheet is provided with a plurality of light guide dots.
7. The backlight module as claimed in claim 6, wherein the light guide dots are uniformly disposed on the surface of the transparent spacer facing the second reflective sheet.
8. The backlight module according to claim 7, wherein the distribution density of the light guide dots near the front bezel is greater than the distribution density of the light guide dots far from the front bezel.
9. The backlight module of claim 7, wherein the area of the light guide dots near the front bezel is larger than the area of the light guide dots far from the front bezel.
10. A display device, comprising:
a backlight module according to any one of claims 1 to 9;
the glass substrate is arranged above the backlight module;
the outer frame is arranged on the outer sides of the backlight module and the glass substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111615030.XA CN114326207A (en) | 2021-12-27 | 2021-12-27 | Backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111615030.XA CN114326207A (en) | 2021-12-27 | 2021-12-27 | Backlight module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114326207A true CN114326207A (en) | 2022-04-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111615030.XA Pending CN114326207A (en) | 2021-12-27 | 2021-12-27 | Backlight module and display device |
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| Country | Link |
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| CN (1) | CN114326207A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114942549A (en) * | 2022-07-06 | 2022-08-26 | 威海台基慧显光电有限公司 | Mini LED backlight module structure |
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| CN105066013A (en) * | 2015-09-18 | 2015-11-18 | 京东方科技集团股份有限公司 | Backlight source structure and display device |
| CN109521600A (en) * | 2018-10-23 | 2019-03-26 | 惠州市华星光电技术有限公司 | A kind of backlight module and its display device |
| CN109991776A (en) * | 2018-01-02 | 2019-07-09 | 三星显示有限公司 | Back light unit and multi-display apparatus including back light unit |
| CN111880336A (en) * | 2020-07-31 | 2020-11-03 | 深圳创维－Rgb电子有限公司 | Backlight assembly and liquid crystal display module |
| CN214540312U (en) * | 2021-05-14 | 2021-10-29 | 中强光电股份有限公司 | Light source module and display device |
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2021
- 2021-12-27 CN CN202111615030.XA patent/CN114326207A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066013A (en) * | 2015-09-18 | 2015-11-18 | 京东方科技集团股份有限公司 | Backlight source structure and display device |
| CN109991776A (en) * | 2018-01-02 | 2019-07-09 | 三星显示有限公司 | Back light unit and multi-display apparatus including back light unit |
| CN109521600A (en) * | 2018-10-23 | 2019-03-26 | 惠州市华星光电技术有限公司 | A kind of backlight module and its display device |
| CN111880336A (en) * | 2020-07-31 | 2020-11-03 | 深圳创维－Rgb电子有限公司 | Backlight assembly and liquid crystal display module |
| CN214540312U (en) * | 2021-05-14 | 2021-10-29 | 中强光电股份有限公司 | Light source module and display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114942549A (en) * | 2022-07-06 | 2022-08-26 | 威海台基慧显光电有限公司 | Mini LED backlight module structure |
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