CN112180496A - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
- Publication number
- CN112180496A CN112180496A CN202011140798.1A CN202011140798A CN112180496A CN 112180496 A CN112180496 A CN 112180496A CN 202011140798 A CN202011140798 A CN 202011140798A CN 112180496 A CN112180496 A CN 112180496A
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- CN
- China
- Prior art keywords
- light
- guide plate
- backlight module
- light guide
- light source
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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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
- G02B6/0091—Positioning aspects of the light source relative to the light guide
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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
- G02B6/0066—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 characterised by the light source being coupled to the light guide
- G02B6/0073—Light emitting diode [LED]
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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
- G02B6/009—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
Abstract
The invention discloses a backlight module and a display device, wherein the backlight module comprises a light source; the light guide plate comprises a light inlet side, and the light inlet side faces the light source; and the adhesive layer is arranged between the light source and the light incident side of the light guide plate. The backlight module and the display device have the beneficial effects that the glue layer below the light guide plate is removed, so that the overall thickness of the backlight module is reduced, and the ultrathin display device is favorably realized. Connect light guide plate income light side and light source through the transparent adhesive layer, the transparent adhesive layer is located in the clearance between the pointolite to and on the light guide plate income light side that this clearance corresponds, the fixed light guide plate of edgewise guarantees that the light path that the light got into the light guide plate in the light source is unanimous, promotes backlight unit's light-emitting stability.
Description
Technical Field
The application relates to the field of backlight, in particular to a backlight module and a display device.
Background
Fig. 1 is a schematic view of a backlight module in the prior art, and a normal front glue (reverse group) of a backlight LED is used to fix a light source (LED)200 and an LGP light guide plate 300 to ensure brightness and light efficiency. The front light adhesive is attached to the lower surface of the LGP light guide plate 300, increasing the thickness of the backlight module to a certain extent.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a backlight module and a display device, which are used to solve the technical problem in the prior art that the overall thickness of the backlight module is increased due to the arrangement of the lamp glue below the light guide plate.
The technical solution to solve the above technical problem is that the present invention provides a backlight module, including a light source; the light guide plate comprises a light inlet side, and the light inlet side faces the light source; and the adhesive layer is arranged between the light source and the light emergent side of the light guide plate.
Further, the light source includes a plurality of LED lamp pearls of linear arrangement, has first clearance between two adjacent LED lamp pearls, the light source with the second clearance has between the income light side of light guide plate, the glue film is located first clearance with in the second clearance.
Further, the glue layer extends from the first gap to the second gap.
Further, the width of the glue layer in the second gap is smaller than or equal to the width of the glue layer in the first gap.
Furthermore, the backlight module also comprises an outer frame which comprises a bottom plate and a side plate, wherein a cavity is enclosed by the bottom plate and the side plate; the circuit board is arranged in the cavity and corresponds to the bottom plate; the light source is arranged on the surface of one side of the circuit board, which is far away from the bottom plate.
Furthermore, the glue layer is made of transparent materials.
Furthermore, the light guide plate also comprises a light emergent side which is adjacent to the light incident side and deviates from the bottom plate; the light-emitting side of the light guide plate is flush with the surface of one side, far away from the bottom plate, of the light source.
Furthermore, the backlight module further comprises lamp glue arranged between the circuit board and the bottom plate.
Furthermore, the light guide plate is arranged on the surface of one side of the circuit board, which is far away from the bottom plate.
The invention also provides a display device comprising the backlight module.
The backlight module and the display device have the beneficial effects that the glue layer below the light guide plate is removed, so that the overall thickness of the backlight module is reduced, and the ultrathin display device is favorably realized. Connect light guide plate income light side and light source through the transparent adhesive layer, the transparent adhesive layer is located in the clearance between the pointolite to and on the light guide plate income light side that this clearance corresponds, the fixed light guide plate of edgewise guarantees that the light path that the light got into the light guide plate in the light source is unanimous, promotes backlight unit's light-emitting stability.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a backlight module in the background art.
Fig. 2 is a schematic structural diagram of a backlight module in an embodiment.
Fig. 3 is a plan view of a backlight module in an embodiment.
The parts in the figures are numbered as follows:
a backlight module 10; an outer frame 100;
a light source 200; a light guide plate 300;
a glue layer 400; a circuit board 500;
a lamp glue 600; a point light source 201;
a light incident side 301; a light exit side 302.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. 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 application.
Examples
As shown in fig. 2, fig. 2 is a schematic structural diagram of a backlight module in an embodiment. In this embodiment, the display device of the invention includes a backlight module 10, wherein the backlight module 10 includes an outer frame 100, a light source 200, a light guide plate 300, a glue layer 400, a circuit board 500 and a lamp glue 600.
The outer frame 100 is a metal outer frame, and specifically, the outer frame 100 includes a bottom plate 101 and a side plate 102, wherein the side plate 102 surrounds the edge of the bottom plate 101 and is perpendicular to the bottom plate 101, the bottom plate 101 and the side plate 102 surround a cavity, the cavity is used for accommodating and fixing other parts of the backlight module 10, and the metal material can shield light and avoid light leakage.
The circuit board 500 is disposed in the cavity and located on the upper surface of the bottom plate 101, the circuit board 500 is used for providing an electrical signal for the light source 200, and a layer of glue 600 is disposed between the circuit board 500 and the bottom plate 101 in order to fix the circuit board 500 in the cavity.
As shown in fig. 2 and 3, the light source 200 is disposed above the circuit board 500, specifically, the light source 200 includes a plurality of point light sources 201, each point light source 201 is a light emitting diode, each light emitting diode includes two pins, the pins are soldered on the circuit board 500, and the circuit board 500 transmits an electrical signal to excite the light emitting diode to emit light, so as to form the light source 200.
In this embodiment, the backlight module 10 is a side-in type backlight module, that is, the point light sources 201 are linearly arranged at the edge of the bottom plate 101 close to the side plate 102, and the light emitted from the point light sources 201 is diffused into a soft surface light source through the light guide plate 300.
The light guide plate 300 is disposed above the circuit board 500 and disposed on the same layer as the light source 200, and specifically, the light guide plate 300 includes a light incident side 301 and a light emergent side 302. The surface of the light guide plate 300 near the light source 200 is a light incident side 301, and the surface of the light guide plate 300 far from the circuit board 500 is a light emitting side 302, wherein the light incident side 301 and the light emitting side 302 are perpendicular to each other. Light emitted from the light source 200 enters the light guide plate 300 through the light incident side 301 and exits from the light exit side 302 of the light guide plate 300 by refraction.
Specifically, a plurality of dots (not shown) are disposed at the bottom of the light guide plate 300, and the dots are used for refracting the light emitted to the lower side of the light guide plate 300 to the upper side of the light guide plate 300, so as to facilitate the light to be emitted from the light emitting side 302, thereby improving the light emitting efficiency of the light guide plate 300.
In order to ensure that the relative position of the light guide plate 300 and the light source 200 is not changed, the light guide plate 300 needs to be fixed. Usually fix light guide plate 300 on circuit board 500 among the prior art, specifically connect light guide plate 300 and circuit board 500 through the lamp glue, but the lamp glue has certain thickness for the distance increase of light-emitting side and bottom plate 101 of light guide plate 300 leads to backlight unit 10's thickness to increase, is unfavorable for realizing ultra-thin display device. Meanwhile, in order to ensure that the light-emitting side 302 of the light guide plate 300 is kept as horizontal as possible, the amount and thickness of the lamp glue are strictly controlled, which is not beneficial to improving the yield of the backlight module 10.
As shown in fig. 3, in the embodiment, the lamp glue between the light guide plate 300 and the circuit board 500 is removed, and the glue layer 400 is selectively disposed between the point light sources 201 and the light incident side 301 of the light guide plate 300, specifically, a first gap H1 is formed between two adjacent point light sources, and a second gap H2 is formed between the point light sources 201 and the light incident side 301 of the light guide plate 300, in order to reduce the adverse effect of the glue layer 400 on the light emitting rate of the backlight module 10, one end of the glue layer 400 is connected to the side wall of the light guide plate 300 corresponding to the first gap H1, and the other end of the glue layer extends into the first gap H1 and is connected to the side walls of the point light sources 201 at two sides of the first gap H1, so as to fix the relative positions of the light guide plate 300.
Because the lamp glue between the light guide plate 300 and the circuit board 500 is removed, the distance between the circuit board 500 and the light emitting side 302 of the light guide plate 300 is reduced, and the technical effect of thinning the backlight module 10 can be realized by selecting small-size LED lamp beads (point light sources).
In order to reduce the adverse effect of the adhesive layer 400 on the light-emitting efficiency of the backlight module 10, in this embodiment, the adhesive layer 400 is made of a transparent material, in other preferred embodiments of the present invention, the adhesive layer 300 is an optically transparent adhesive, the adhesive layer 400 is mainly disposed in the first gap H1 and the second gap H2 corresponding to the first gap, and the cross section of the adhesive layer 400 is gradually reduced, wherein the cross section of the adhesive layer 400 tightly attached to the light-incident side 301 is the minimum value, so as to ensure that the light directly emitted from each point light source 201 to the light-incident side 301 is not subjected to refraction loss, thereby maximally reducing the influence of the adhesive layer 400 on the light-emitting efficiency of the light.
The beneficial effects of this embodiment lie in, backlight unit and display device of this embodiment have got rid of the glue film of light guide plate below for backlight unit's whole thickness reduces, is favorable to realizing ultra-thin display device. Connect light guide plate income light side and light source through the transparent adhesive layer, the transparent adhesive layer is located in the clearance between the pointolite to and on the light guide plate income light side that this clearance corresponds, the fixed light guide plate of edgewise guarantees that the light path that the light got into the light guide plate in the light source is unanimous, promotes backlight unit's light-emitting stability.
The above description of the embodiments is only for assisting understanding of the technical solutions and the core ideas thereof; 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; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A backlight module is characterized by comprising
A light source;
the light guide plate comprises a light inlet side, and the light inlet side faces the light source; and
the glue layer is arranged between the light source and the light incident side of the light guide plate.
2. The backlight module according to claim 1,
the light source comprises a plurality of LED lamp beads which are arranged on the same straight line at equal intervals;
a first gap is formed between every two adjacent LED lamp beads, a second gap is formed between the light source and the light inlet side of the light guide plate, and the adhesive layer is arranged in the first gap and the second gap.
3. The backlight module according to claim 2,
the glue layer extends into the second gap from the first gap.
4. The backlight module according to claim 2,
the width of the glue layer in the second gap is smaller than or equal to the width of the glue layer in the first gap.
5. The backlight module of claim 1, further comprising
The outer frame comprises a bottom plate and a side plate, and a cavity is defined by the bottom plate and the side plate; and
the circuit board is arranged in the cavity and is opposite to the bottom plate;
the light source is arranged on the surface of one side of the circuit board, which is far away from the bottom plate.
6. The backlight module of claim 5, further comprising
And the lamp glue is arranged between the circuit board and the bottom plate.
7. The backlight module according to claim 5,
the light guide plate is arranged on the surface of one side, far away from the bottom plate, of the circuit board.
8. The backlight module according to claim 5, wherein the light guide plate further comprises a light exit side adjacent to the light entrance side and facing away from the bottom plate;
the light-emitting side of the light guide plate is flush with the surface of one side, far away from the bottom plate, of the light source.
9. The backlight module according to claim 1,
the glue layer is made of transparent materials.
10. A display device comprising the backlight module of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011140798.1A CN112180496A (en) | 2020-10-22 | 2020-10-22 | Backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011140798.1A CN112180496A (en) | 2020-10-22 | 2020-10-22 | Backlight module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112180496A true CN112180496A (en) | 2021-01-05 |
Family
ID=73922586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011140798.1A Pending CN112180496A (en) | 2020-10-22 | 2020-10-22 | Backlight module and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112180496A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101174058A (en) * | 2006-10-30 | 2008-05-07 | 鸿富锦精密工业（深圳）有限公司 | Back light module unit and method for producing the same |
| CN201661930U (en) * | 2009-11-12 | 2010-12-01 | 金芃 | Light-emitting element of LED side-light type backlight source |
| CN103899975A (en) * | 2012-12-25 | 2014-07-02 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
| CN204083998U (en) * | 2014-08-06 | 2015-01-07 | 厦门天马微电子有限公司 | Side entrance back module and display unit |
| CN104748020A (en) * | 2015-04-27 | 2015-07-01 | 京东方科技集团股份有限公司 | Backlight module, display panel and display device |
| CN107632459A (en) * | 2017-10-13 | 2018-01-26 | 惠州市华星光电技术有限公司 | Liquid crystal display and its backlight module |
| CN108132562A (en) * | 2018-01-05 | 2018-06-08 | 京东方科技集团股份有限公司 | A kind of lamp bar adhesive tape, backlight module and display device |
| CN210005829U (en) * | 2019-07-12 | 2020-01-31 | 合肥惠科金扬科技有限公司 | backlight module and display device |
-
2020
- 2020-10-22 CN CN202011140798.1A patent/CN112180496A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101174058A (en) * | 2006-10-30 | 2008-05-07 | 鸿富锦精密工业（深圳）有限公司 | Back light module unit and method for producing the same |
| CN201661930U (en) * | 2009-11-12 | 2010-12-01 | 金芃 | Light-emitting element of LED side-light type backlight source |
| CN103899975A (en) * | 2012-12-25 | 2014-07-02 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
| CN204083998U (en) * | 2014-08-06 | 2015-01-07 | 厦门天马微电子有限公司 | Side entrance back module and display unit |
| CN104748020A (en) * | 2015-04-27 | 2015-07-01 | 京东方科技集团股份有限公司 | Backlight module, display panel and display device |
| CN107632459A (en) * | 2017-10-13 | 2018-01-26 | 惠州市华星光电技术有限公司 | Liquid crystal display and its backlight module |
| CN108132562A (en) * | 2018-01-05 | 2018-06-08 | 京东方科技集团股份有限公司 | A kind of lamp bar adhesive tape, backlight module and display device |
| CN210005829U (en) * | 2019-07-12 | 2020-01-31 | 合肥惠科金扬科技有限公司 | backlight module and display device |
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