CN104296012A - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
- Publication number
- CN104296012A CN104296012A CN201410584965.XA CN201410584965A CN104296012A CN 104296012 A CN104296012 A CN 104296012A CN 201410584965 A CN201410584965 A CN 201410584965A CN 104296012 A CN104296012 A CN 104296012A
- Authority
- CN
- China
- Prior art keywords
- backlight module
- guide plate
- electroluminescent device
- light guide
- light
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 claims description 9
- 238000005401 electroluminescence Methods 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 4
- 108010043121 Green Fluorescent Proteins Proteins 0.000 claims description 3
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical group O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 claims description 3
- 239000005416 organic matter Substances 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 239000003292 glue Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000006854 communication Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Planar Illumination Modules (AREA)
Abstract
The embodiment of the invention discloses a backlight module and a display device, and relates to the field of display technology. The backlight module and the display device can avoid the phenomenon that brightness and darkness alternate near a light entering plane of a light guide plate. The backlight module comprises a light source and the light guide plate, the light source comprises an electroluminescent device, and the electroluminescent device covers at least one side face of the light guide plate.
Description
Technical field
The present invention relates to Display Technique field, particularly relate to a kind of backlight module and display unit.
Background technology
Display unit comprises display floater and backlight module, and wherein, backlight module provides uniform light for display floater.At present, conventional backlight module is side entrance back module, and side entrance back module comprises light guide plate and light source, wherein, light source near a side (this side is called incidence surface) of light guide plate arrange and and between incidence surface, there is interval, bottom surface of light guide plate is provided with site.
Light source generally includes many spaced light emitting diodes (Light Emitting Diode is called for short LED), and as shown in Figure 1, first, the light that LED1 ' sends is in light guide plate 2 ' for the transmitting procedure of the light that every LEDs sends; Then, light is propagated in the mode of total reflection in light guide plate 2 ', when in communication process, light runs into site 3 ', site 3 ' has scattering process to light, destroy the total reflection of light, thus light is penetrated from the exiting surface (exiting surface is the face relative with the bottom surface of light guide plate 2 ') of light guide plate 2 '.
Inventor finds, as shown in Figure 2, plurality of LEDs 1 ' the interval comprised due to light source is arranged, every LEDs 1 ' has certain lighting angle, there is interval 5 ' between LED1 ' and the incidence surface 4 ' of light guide plate 2 ' simultaneously, thus make to occur the bright phenomenon secretly replaced near incidence surface 4 ', now the light that sends of backlight module is uneven, makes the display effect of display unit not good.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of backlight module and display unit, can avoid near the incidence surface of light guide plate, occur the bright phenomenon secretly replaced.
For solving the problems of the technologies described above, the invention provides a kind of backlight module, this backlight module adopts following technical scheme:
A kind of backlight module, comprises light source and light guide plate,
Described light source comprises electroluminescent device, and described electroluminescent device covers at least one side of described light guide plate.
The light that described electroluminescent device sends is colourama, the bottom surface of described light guide plate is distributed with the site of seal coat, and the colourama that described electroluminescent device sends becomes white light after the reflection of described site.
The light that described electroluminescent device sends is blue light, and described coating comprises yellow fluorescent powder or red green fluorescent material.
The bottom surface of described light guide plate and exiting surface are plane or curved surface.
A side of described light guide plate, two sides or four sides are provided with described electroluminescent device.
Described electroluminescent device comprises transparency conducting layer, electroluminescence layer and metallic diaphragm along setting gradually away from described light guide plate direction.
The material of described transparency conducting layer is tin indium oxide.
The material of described electroluminescence layer is organic matter, and described electroluminescent device is Organic Light Emitting Diode.
Embodiments provide a kind of backlight module, this backlight module comprises light source and light guide plate, and light source comprises electroluminescent device, and electroluminescent device covers at least one side of light guide plate.The electroluminescent device provided due to the embodiment of the present invention covers at least one side of light guide plate, thus can avoid occurring the bright phenomenon secretly replaced near the incidence surface of light guide plate, thus make backlight module send uniform light, now display unit has preferably display effect.
In addition, present invention also offers a kind of display unit, this display unit comprises the backlight module in any one embodiment above.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the transmitting procedure schematic diagram of the light that in prior art, every LEDs sends;
Fig. 2 is the schematic diagram in prior art near incidence surface;
Fig. 3 is the position relationship schematic diagram of electroluminescent device and light guide plate in the embodiment of the present invention;
Fig. 4 is the schematic partial cross-sectional view of display unit in the embodiment of the present invention.
Description of reference numerals:
1-electroluminescent device; 2-light guide plate; 3-site;
4-display unit; 5-backboard; 6-backlight module;
7-glue frame; 8-display floater; 9-frame.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiments provide a kind of backlight module, can avoid near the incidence surface of light guide plate, occur the bright phenomenon secretly replaced.
Particularly, backlight module comprises light source and light guide plate, and light source comprises electroluminescent device, and electroluminescent device covers at least one side of light guide plate.Exemplarily, as shown in Figure 3, electroluminescent device 1 covers a side of light guide plate 2, the bottom surface of light guide plate 2 is provided with site 3.The transmitting procedure of the light that electroluminescent device 1 sends in light guide plate 2 is: first, the light that electroluminescent device 1 sends enters into light guide plate 2, then, light is propagated in the mode of total reflection in light guide plate 2, in communication process, light runs into site 3, because 3 pairs, site light has scattering process, destroy the total reflection of light, thus light is penetrated from the exiting surface of light guide plate 2.Because electroluminescent device 1 covers light guide plate 2, between electroluminescent device 1 and light guide plate 2 continuously every, there will not be the bright phenomenon secretly replaced near the incidence surface of thus light guide plate 2, thus make backlight module send uniform light, now display unit has preferably display effect.
Further, the light sent due to electroluminescent device 1 is generally colourama, thus the light for making backlight module send is white light, the bottom surface of light guide plate 2 is distributed with the site 3 of seal coat, and coating is used for the colourama that electroluminescent device 1 sends to become white light.Particularly, when the light that electroluminescent device 1 sends is blue light, coating can comprise yellow fluorescent powder or red green fluorescent material; When the light that electroluminescent device 1 sends is gold-tinted, coating can comprise blue colour fluorescent powder.
Particularly, the bottom surface of light guide plate 2 and exiting surface can be plane or curved surface.Exemplarily, when the bottom surface of light guide plate 2 and exiting surface are curved surface, because electroluminescent device 1 covers light guide plate 2, interval is there is not between electroluminescent device 1 and light guide plate 2, thus make near the incidence surface of light guide plate 2, to there will not be the bright phenomenon secretly replaced, and the shape of light guide plate 2 can be adapted to well due to electroluminescent device 1, thus the direction of propagation of the light making electroluminescent device 1 send can change along with the change of the shape of light guide plate 2, thus still propagate in total reflection mode after the light that electroluminescent device 1 sends enters light guide plate 2, make backlight module still can send uniform light, therefore above-mentioned backlight module can be used as the backlight module in curved-surface display device.
Alternatively, electroluminescent device 1 can be set on of light guide plate 2 side, two sides or four sides.When arranging electroluminescent device 1 on a side of light guide plate 2, cost-saved, but now the display brightness of display unit is lower; When arranging electroluminescent device 1 on the two or four side of light guide plate 2, the display brightness of display unit can be improved, but cost also corresponding raising.Therefore, those skilled in the art can select according to the actual requirements.
Particularly, the electroluminescent device 1 in the embodiment of the present invention comprises transparency conducting layer, electroluminescence layer and metallic diaphragm along setting gradually away from light guide plate 2 direction.Wherein, the material of transparency conducting layer can be tin indium oxide, also can be the conductive material that other transmitances are higher; The material of electroluminescence layer can be organic matter, and now, electroluminescent device 1 is Organic Light Emitting Diode, and when selecting different organic matters, electroluminescent device 1 can send the light of different colours.
In addition, backlight module also comprises the rete such as diffusion barrier and prism film, becomes very even by the light of the exiting surface outgoing of light guide plate 2 after diffusion barrier and prism film, and then makes backlight module can provide the light of high uniformity for display unit.
Embodiments provide a kind of backlight module, this backlight module comprises light source and light guide plate, and light source comprises electroluminescent device, and electroluminescent device covers at least one side of light guide plate.Due between electroluminescent device and light guide plate continuously every, thus can avoid there will be the bright phenomenon secretly replaced near the incidence surface of light guide plate, thus make backlight module send uniform light.
In addition, the embodiment of the present invention additionally provides a kind of display unit, and this device comprises above-described backlight module.Wherein, this display unit can be any product or parts with Presentation Function such as liquid crystal panel, panel computer, television set, display, notebook computer, Electronic Paper, mobile phone, DPF, navigator.
For having a clear understanding of display unit, be described the primary structure of display unit below, as shown in Figure 4, display unit 4 comprises backboard 5, backlight module 6, glue frame 7, display floater 8 and frame 9, wherein, backboard 5 is for the protection of assembly such as backlight module in display unit 46 grade; Backlight module 6 is for providing uniform light for display floater 8, and it comprises electroluminescent device 1 and light guide plate 2; Glue frame 7 is for assemblies such as fixed display panel 8 and backboards 5; Display floater 8 is for display frame; Frame 9 for blocking the assembly be positioned at thereafter, as glue frame 7 and electroluminescent device 1.Because electroluminescent device 1 is thinner, the frame 9 thus for blocking electroluminescent device 1 can be narrower, and now display unit 4 can be designed to the display unit of narrow frame, can improve the visual experience of user.Further, because electroluminescent device 1 does not need assembled LED, thus can avoid the bad and assembly failure of the optics that causes because of assembled LED, and then can assembling property be improved.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of described claim.
Claims (9)
1. a backlight module, comprises light source and light guide plate, it is characterized in that,
Described light source comprises electroluminescent device, and described electroluminescent device covers at least one side of described light guide plate.
2. backlight module according to claim 1, is characterized in that,
The light that described electroluminescent device sends is colourama, the bottom surface of described light guide plate is distributed with the site of seal coat, and the colourama that described electroluminescent device sends becomes white light after the reflection of described site.
3. backlight module according to claim 2, is characterized in that,
The light that described electroluminescent device sends is blue light, and described coating comprises yellow fluorescent powder or red green fluorescent material.
4. backlight module according to claim 1, is characterized in that,
The bottom surface of described light guide plate and exiting surface are plane or curved surface.
5. backlight module according to claim 1, is characterized in that,
A side of described light guide plate, two sides or four sides are provided with described electroluminescent device.
6. the backlight module according to any one of claim 1-5, is characterized in that,
Described electroluminescent device comprises transparency conducting layer, electroluminescence layer and metallic diaphragm along setting gradually away from described light guide plate direction.
7. backlight module according to claim 6, is characterized in that,
The material of described transparency conducting layer is tin indium oxide.
8. backlight module according to claim 6, is characterized in that,
The material of described electroluminescence layer is organic matter, and described electroluminescent device is Organic Light Emitting Diode.
9. a display unit, is characterized in that, comprises the backlight module as described in any one of claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410584965.XA CN104296012B (en) | 2014-10-27 | 2014-10-27 | A kind of backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410584965.XA CN104296012B (en) | 2014-10-27 | 2014-10-27 | A kind of backlight module and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104296012A true CN104296012A (en) | 2015-01-21 |
| CN104296012B CN104296012B (en) | 2018-02-13 |
Family
ID=52315859
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410584965.XA Expired - Fee Related CN104296012B (en) | 2014-10-27 | 2014-10-27 | A kind of backlight module and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104296012B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106468800A (en) * | 2016-08-12 | 2017-03-01 | 联想(北京)有限公司 | A kind of Optical devices and electronic equipment |
| WO2017219397A1 (en) * | 2016-06-23 | 2017-12-28 | 深圳市华星光电技术有限公司 | Lcd display device, quantum dot based backlight module and manufacturing method therefor |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060076520A (en) * | 2004-12-29 | 2006-07-04 | 주식회사 효성 | Backlight unit with a plastic optical fiber for an lcd |
| US20080101068A1 (en) * | 2006-10-26 | 2008-05-01 | Minebea Co., Ltd. | Spread illuminating apparatus of multiple panel type |
| CN101532628A (en) * | 2003-12-26 | 2009-09-16 | 夏普株式会社 | Backlight and liquid crystal display device |
| CN102072436A (en) * | 2010-10-22 | 2011-05-25 | 中山大学 | Backlight source structure and working method thereof |
| US20110128471A1 (en) * | 2008-07-07 | 2011-06-02 | James Rowland Suckling | Illumination panel and display |
| CN102734713A (en) * | 2012-07-13 | 2012-10-17 | 深圳市华星光电技术有限公司 | LED (light-emitting diode) backlight module |
-
2014
- 2014-10-27 CN CN201410584965.XA patent/CN104296012B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101532628A (en) * | 2003-12-26 | 2009-09-16 | 夏普株式会社 | Backlight and liquid crystal display device |
| KR20060076520A (en) * | 2004-12-29 | 2006-07-04 | 주식회사 효성 | Backlight unit with a plastic optical fiber for an lcd |
| US20080101068A1 (en) * | 2006-10-26 | 2008-05-01 | Minebea Co., Ltd. | Spread illuminating apparatus of multiple panel type |
| US20110128471A1 (en) * | 2008-07-07 | 2011-06-02 | James Rowland Suckling | Illumination panel and display |
| CN102072436A (en) * | 2010-10-22 | 2011-05-25 | 中山大学 | Backlight source structure and working method thereof |
| CN102734713A (en) * | 2012-07-13 | 2012-10-17 | 深圳市华星光电技术有限公司 | LED (light-emitting diode) backlight module |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017219397A1 (en) * | 2016-06-23 | 2017-12-28 | 深圳市华星光电技术有限公司 | Lcd display device, quantum dot based backlight module and manufacturing method therefor |
| US10317601B2 (en) | 2016-06-23 | 2019-06-11 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Liquid crystal display apparatus, backlight module based on quantum dots and method of manufacturing the same |
| CN106468800A (en) * | 2016-08-12 | 2017-03-01 | 联想(北京)有限公司 | A kind of Optical devices and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104296012B (en) | 2018-02-13 |
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Granted publication date: 20180213 |
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