CN103148406A - Display device and backlight module thereof - Google Patents
Display device and backlight module thereof Download PDFInfo
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- CN103148406A CN103148406A CN2013100184072A CN201310018407A CN103148406A CN 103148406 A CN103148406 A CN 103148406A CN 2013100184072 A CN2013100184072 A CN 2013100184072A CN 201310018407 A CN201310018407 A CN 201310018407A CN 103148406 A CN103148406 A CN 103148406A
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- 230000003287 optical effect Effects 0.000 claims abstract description 30
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 1
- 229910052708 sodium Inorganic materials 0.000 claims 1
- 239000011734 sodium Substances 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract 6
- 239000012788 optical film Substances 0.000 abstract 2
- 208000034699 Vitreous floaters Diseases 0.000 description 8
- 239000002096 quantum dot Substances 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 241000278713 Theora Species 0.000 description 1
- 238000005282 brightening Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
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- 239000013078 crystal Substances 0.000 description 1
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- 239000003292 glue Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- NHDHVHZZCFYRSB-UHFFFAOYSA-N pyriproxyfen Chemical compound C=1C=CC=NC=1OC(C)COC(C=C1)=CC=C1OC1=CC=CC=C1 NHDHVHZZCFYRSB-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention relates to a backlight module, which comprises a frame body, a light guide plate, a light source and an optical film group. The light guide plate is provided with a light incident surface and a light emergent surface and is arranged in the frame. The light source is positioned in the frame and faces the light inlet surface, and the light emitted by the light source is non-white light. The optical diaphragm group is arranged on the light-emitting surface. The optical film set comprises a first color conversion layer and a second color conversion layer. At least a portion of the light emitted by the light source passes through the second color conversion layer and does not pass through the first color conversion layer. The first color conversion layer and the second color conversion layer are used for converting the light emitted by the light source from non-white light into white light. The invention improves the problems of uneven brightness and chromaticity of the existing backlight module.
Description
Technical field
The present invention is about a kind of electronic installation, particularly a kind of display unit of tool backlight module.
Background technology
Progressive rapidly for multimedia society is indebted to the fast development of semiconductor element or display unit mostly.With regard to display element, negative electrode display tube (or claiming iconoscope, Cathode Ray Tube, CRT) because having excellent display quality and economy thereof, has been monopolized the monitor market always.Yet, the display of CRT formula have volume excessive with the problem that consumed multiple-energy-source, for the requirements such as high image quality, low consumption electrical power, slim volume production, low voltage drive, volume are little, the display of CRT formula obviously can't be reached this requirement.For this a bit, liquid crystal display (Liquid Crystal Display, be called for short LCD) very large advantage will be arranged, and LCD has been widely used in medium and small Portable TV, picture telephone, has shot with video-corder projector, notebook computer, desktop display, panel computer and projection color tv etc.
The backlight module that existing liquid crystal display comprises a display panels and is positioned at the display panels below.Backlight module comprises a LGP, a plurality of optical model sheet and a light source, and the light that light source sends is via LGP and these optical model sheets and the display floater that arrives, with the backlight as display floater.
Yet when light penetrated these optical model sheets, the phenomenon of light leak easily occured in the edge of these optical model sheets, caused the even problem of colourity inequality of shading value.So, the not good problem of optical effect of display and backlight module thereof will be caused.
Summary of the invention
The invention reside in provides a kind of display unit and backlight module thereof, uses the shading value of the existing backlight module of improvement and the problem of colourity inequality.
The disclosed backlight module of the present invention comprises a framework, a LGP, a light source and an optical diaphragm group.LGP has an incidence surface and an exiting surface, and LGP is arranged in framework.Light source is positioned at framework and towards incidence surface, the light that light source sends is a non-white light.Optical diaphragm group is arranged at exiting surface.Optical diaphragm group comprises one first color converting layer and one second color converting layer.At least part of light that is sent by light source does not pass through the first color converting layer by the second color converting layer.The first color converting layer and the second color converting layer are converted to a white light in order to the light that light source is sent by non-white light.
The disclosed display unit of the present invention comprises backlight module described above and a display floater.Display floater is stacked and placed on optical diaphragm group.
Display unit disclosed according to the invention described above and backlight module thereof, setting by the second color converting layer, make not the light by the first color converting layer can pass through the second color converting layer, all can be converted to white light by non-white light to guarantee all light that light source is sent.By this, with the shading value of improving backlight module and the problem of colourity inequality.
About feature of the present invention, implementation and effect, hereby coordinate graphicly to be described in detail as follows as most preferred embodiment.
Description of drawings
Fig. 1 is the structure cutaway view of display unit according to an embodiment of the invention;
Fig. 2 is the structure cutaway view of display unit according to another embodiment of the present invention.
Wherein, Reference numeral:
10 display unit
The 10a display unit
11 backlight modules
The 11a backlight module
111 frameworks
1110 walls
1111 weight trays
1112 bodies of wall
1,113 first plummers
1,114 second plummers
112 LGPs
1121 incidence surfaces
1122 exiting surfaces
1123 sides
1124 bottom surfaces
113 light sources
1131 light emitting surfaces
114 optical diaphragm group
The 114a optical diaphragm group
1,141 first color converting layers
1,142 second color converting layers
115 reflector plates
12 display floaters
The specific embodiment
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Please refer to Fig. 1, Fig. 1 is the structure cutaway view of display unit according to an embodiment of the invention.
The display unit of the display unit 10 of the present embodiment in panel computer or the LCD screen be as example, but not as limit.Display unit 10 comprises a backlight module 11 and a display floater 12.
At least one body of wall 1112 that framework 111 comprises a weight tray 1111 and is erected in weight tray 1111 peripheries.The crosspiece cross section of body of wall 1112 is roughly a stair-stepping external form, body of wall 1112 has one first plummer 1113 and one second plummer 1114, the relative altitude of the first plummer 1113 is higher than the relative altitude of weight tray 1111, and the relative altitude of the first plummer 1113 is lower than the relative altitude of the second plummer 1114.The material of framework 111 can be but be not limited to plastic cement or rubber, that is framework 111 can be a glue frame, so that the shockproof effect of backlight module 11 to be provided.In addition, the external form of above-mentioned framework 111 only illustrates but not in order to limit the present invention.
The LGP 112 of the present embodiment is arranged in framework 111 and is positioned on weight tray 1111.LGP 112 has an incidence surface 1121, an exiting surface 1122, a side 1123 and a bottom surface 1124.Exiting surface 1122 and bottom surface 1124 are positioned at relative two sides of LGP 112, and bottom surface 1124 is towards weight tray 1111.Incidence surface 1121 and side 1123 are positioned at relative two sides of LGP 112, and incidence surface 1121 and side 1123 are between exiting surface 1122 and bottom surface 1124.Furthermore, the incidence surface 1121 of the LGP 112 of the present embodiment and side 1123 are respectively adjacent to relative two sides of exiting surface 1122.By the relative position of incidence surface 1121 and exiting surface 1122 as can be known, the backlight module 11 of the present embodiment is the backlight module of side photograph formula.Should be noted, the backlight module 11 of the present embodiment is not limited to side according to formula, and in other embodiments, backlight module can be also the backlight module that adopts straight-down negative, that is incidence surface and exiting surface are positioned at relative two sides of LGP and non-adjacent.
In addition, light source 113 can be but be not limited to a light emitting diode (LED, light-emitting diode).Light source 113 is positioned at framework 111 and is positioned on weight tray 1111, and the light emitting surface 1131 of light source 113 is towards incidence surface 1121, and the light that light source 113 sends is a non-white light.
In addition, backlight module 11 also can comprise a reflector plate 115, and reflector plate 115 is between the weight tray 1111 of LGP 112 and framework 111.
With regard to the present embodiment, the first color converting layer 1141 is positioned at the orlop of optical diaphragm group 114, and the first color converting layer 1141 directly is attached at the exiting surface 1122 of LGP 112.
Should be noted, above-mentioned the first color converting layer 1141 is positioned at the orlop of optical diaphragm group 114 and directly to be attached at the feature of exiting surface 1122 non-in order to limit the present invention.In other embodiments, the first color converting layer 1141 can be also to be positioned at the intermediate layer of optical diaphragm group 114 and to keep distances with exiting surface 1122.
Second color converting layer 1142 of the present embodiment can but be not limited to be positioned at the superiors of optical diaphragm group 114, make the second color converting layer 1142 keep spacings and not contact with the first color converting layer 1141.And the second color converting layer 1142 is in the ora terminalis place of the superiors of optical diaphragm group 114 haply, and the second color converting layer 1142 and the first color converting layer 1141 projection in vertical direction part is overlapping at least, but not as limit.
The first color converting layer 1141 and the second color converting layer 1142 are converted to a white light in order to the light that light source 113 is sent by non-white light.
For instance, the first color converting layer 1141 and the second color converting layer 1142 all comprise a plurality of the first fluorescence quantums, and these first fluorescence quantums are stimulated (for example being subject to the light irradiation) and send one first coloured light.So-called quantum dot (QDs, quantum dots) refers to the semiconductor crystal of nanosized, and quantum dot is subjected to energy excitation and can radiates fluorescence.And dissimilar quantum dot is excited the color of the fluorescence that radiates also not identical.Therefore, can select the first fluorescence quantum of suitable kind, the color that makes the first coloured light is complementary mutually with the color of the non-white light that light source 113 sends, and so can make non-white light be converted to white light by the first color converting layer 1141 and the second color converting layer 1142.
For instance, if the non-white light that light source 113 sends is blue (blue) light, the first fluorescence quantum the first coloured light that sends that is stimulated is required to be yellow (yellow) light.If the non-white light that light source 113 sends is red (red) light, the first fluorescence quantum the first coloured light that sends that is stimulated is required to be cyan (Cyan) light.If the non-white light that light source 113 sends is green (green) light, the first fluorescence quantum the first coloured light that sends that is stimulated is required to be magenta (Magenta) light.
Should be noted, it is non-in order to limit the present invention that above-mentioned the first color converting layer 1141 and the second color converting layer 1142 only comprise a kind of feature of fluorescence quantum.For instance, in the middle of other embodiment, the first color converting layer 1141 and the second color converting layer 1142 can comprise a plurality of the first fluorescence quantums and a plurality of the second fluorescence quantum, that is the first color converting layer 1141 and the second color converting layer 1142 comprise two kinds of different types of fluorescence quantums.The first fluorescence quantum is stimulated and sends one first coloured light, and the second fluorescence quantum is stimulated and sends one second coloured light, and the color of the first coloured light and the second coloured light is different.Utilize the suitable collocation of the first coloured light and the second coloured light, still can make non-white light be converted to white light.
For instance, if the non-white light that light source 113 sends is blue (blue) light, and be stimulated the first coloured light of sending of the first fluorescence quantum is red (red) light, and the second fluorescence quantum the second coloured light that sends that is stimulated is required to be green (green) light.If the non-white light that light source 113 sends is red (red) light, and be stimulated the first coloured light of sending of the first fluorescence quantum is green (green) light, and the second fluorescence quantum the second coloured light that sends that is stimulated is required to be blueness (blue) light.If the non-white light that light source 113 sends is green (green), and be stimulated the first coloured light of sending of the first fluorescence quantum is blue (blue) light, and the second fluorescence quantum the second coloured light that sends that is stimulated is required to be redness (red) light.
In addition, the display floater 12 of the present embodiment is stacked and placed on optical diaphragm group 114.Specifically, display floater 12 is stacked and placed on optical diaphragm group 114 by being arranged at the second plummer 1114.
Please continue with reference to Fig. 1, when light source 113 sent the light of non-white light, most light penetrated via exiting surface 1122 and penetrates the first color converting layer 1141, so that non-white light is converted to white light.Yet the light L that still has part is penetrated by exiting surface 1122, but is penetrated by side 1123.At this moment, the light L that is penetrated by side 1123 then penetrates the second color converting layer 1142 via the reflection of the wall 1110 of framework 111, so that non-white light is converted to white light.
In other words, by the suitable setting of the second color converting layer 1142, the light by the first color converting layer 1141 can not pass through the second color converting layer 1142, all can be converted to white light by non-white light to guarantee all light that light source 113 is sent.By this, with the shading value of improving backlight module 11 and the problem of colourity inequality.
Should be noted, the position of second color converting layer 1142 of above-mentioned the present embodiment is non-in order to limit the present invention, be familiar with this and can adjust according to the actual requirements and suitably the position of the second color converting layer 1142 to skill person, all can be converted to white light by non-white light to guarantee all light that light source 113 is sent.
Please then with reference to Fig. 2, Fig. 2 is the structure cutaway view of display unit according to another embodiment of the present invention.Because the present embodiment is similar to the embodiment of Fig. 1, therefore only for difference place's explanation.
The difference of the backlight module 11a of the display unit 10a of the present embodiment and the backlight module 11 of Fig. 1 embodiment is, optical diaphragm group 114a comprises the first color converting layer 1141 and the second color converting layer 1142, and the second color converting layer 1142 is extended by an end of the first color converting layer 1141, and the second color converting layer 1142 is given prominence to side 1123.That is the second color converting layer 1142 is connected with the first color converting layer 1141.
Therefore, can then not penetrate the second color converting layer 1142 by the first color converting layer 1141 by the emitted light in side 1123, so that non-white light is converted to white light.Can guarantee that so, also all light that light source 113 sends all can be converted to white light by non-white light.
Display unit and backlight module thereof according to an above-mentioned embodiment, setting by the second color converting layer, make not the light by the first color converting layer can pass through the second color converting layer, all can be converted to white light by non-white light to guarantee all light that light source is sent.By this, with the shading value of improving backlight module and the problem of colourity inequality.
Although the present invention discloses as above with above-mentioned preferred embodiment; so it is not to limit the present invention; anyly have the knack of alike skill person; without departing from the spirit and scope of the present invention; when can do a little change and retouching, therefore scope of patent protection of the present invention must be looked the appended claim person of defining of this specification and is as the criterion.
Claims (15)
1. a backlight module, is characterized in that, comprises:
One framework;
One LGP has an incidence surface and an exiting surface, and this LGP is arranged in this framework;
One light source is positioned at this framework and towards this incidence surface, the light that this light source sends is a non-white light; And
One optical diaphragm group, be arranged at this exiting surface, this optical diaphragm group comprises one first color converting layer and one second color converting layer, the at least part of light that is sent by this light source does not pass through this first color converting layer by this second color converting layer, and this first color converting layer and this second color converting layer are converted to a white light in order to the light that this light source is sent by this non-white light.
2. backlight module according to claim 1, is characterized in that, this LGP comprises a side, and this side is adjacent to this exiting surface, and at least part of light that is sent by this light source sequentially passes through this side and this second color converting layer.
3. backlight module according to claim 1, is characterized in that, this second color converting layer is extended by an end of this first color converting layer.
4. backlight module according to claim 1, is characterized in that, this second color converting layer and this first color converting layer keep a spacing.
5. backlight module according to claim 1, is characterized in that, this second color converting layer and this first color converting layer projection in vertical direction, and part is overlapping at least.
6. backlight module according to claim 1, is characterized in that, this first color converting layer contacts this exiting surface.
7. backlight module according to claim 1, is characterized in that, this first color converting layer and this second color converting layer comprise a plurality of the first fluorescence quantums, and described the first fluorescence quantum is stimulated and sends one first coloured light.
8. backlight module according to claim 7, is characterized in that, this non-white light is blue light, and this first coloured light is sodium yellow.
9. backlight module according to claim 7, is characterized in that, this non-white light is red light, and this first coloured light is cyan light.
10. backlight module according to claim 7, is characterized in that, this non-white light is green light, and this first coloured light is pinkish red coloured light.
11. backlight module according to claim 1, it is characterized in that, this first color converting layer and this second color converting layer comprise a plurality of the first fluorescence quantums and a plurality of the second fluorescence quantum, described the first fluorescence quantum is stimulated and sends one first coloured light, described the second fluorescence quantum is stimulated and sends one second coloured light, and the color of this first coloured light and this second coloured light is different.
12. backlight module according to claim 11 is characterized in that, this non-white light is blue light, and this first coloured light is red light, and this second coloured light is green light.
13. backlight module according to claim 11 is characterized in that, this non-white light is red light, and this first coloured light is green light, and this second coloured light is blue light.
14. backlight module according to claim 11 is characterized in that, this non-white light is green light, and this first coloured light is blue light, and this second coloured light is red light.
15. a display unit is characterized in that, comprises:
Backlight module as claimed in claim 1; And
One display floater is stacked and placed on this optical diaphragm group.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101142996A TWI472842B (en) | 2012-11-16 | 2012-11-16 | Display device and back light module thereof |
| TW101142996 | 2012-11-16 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103148406A true CN103148406A (en) | 2013-06-12 |
| CN103148406B CN103148406B (en) | 2015-10-21 |
Family
ID=48546633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310018407.2A Expired - Fee Related CN103148406B (en) | 2012-11-16 | 2013-01-18 | Display device and backlight module thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103148406B (en) |
| TW (1) | TWI472842B (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104635378A (en) * | 2013-11-11 | 2015-05-20 | 乐金显示有限公司 | Backlight unit and display device comprising the same |
| CN104753127A (en) * | 2013-12-31 | 2015-07-01 | 南京德朔实业有限公司 | Battery pack, charging assembly, electric tool and break line detection method |
| CN104880860A (en) * | 2014-02-27 | 2015-09-02 | 乐金显示有限公司 | Backlight assembly and liquid crystal display including the same |
| CN105204226A (en) * | 2014-06-20 | 2015-12-30 | 鸿海精密工业股份有限公司 | Backlight module and display device |
| CN105402640A (en) * | 2014-09-15 | 2016-03-16 | 扬升照明股份有限公司 | Backlight module |
| US9323105B2 (en) | 2013-10-29 | 2016-04-26 | Au Optronics Corporation | Backlight module and display panel using the same |
| CN106200112A (en) * | 2014-08-22 | 2016-12-07 | 三星电子株式会社 | Framed, back light unit, liquid crystal display and light conversion sheet |
| CN106292057A (en) * | 2015-06-24 | 2017-01-04 | 乐金显示有限公司 | Liquid crystal indicator including border fluorescence structure body |
| US9645302B2 (en) | 2013-03-21 | 2017-05-09 | Lg Display Co., Ltd. | Backlight unit and display device including the same |
| CN107402474A (en) * | 2016-05-19 | 2017-11-28 | 鸿富锦精密工业（深圳）有限公司 | Display device |
| WO2018064806A1 (en) * | 2016-10-08 | 2018-04-12 | Goertek. Inc | Display device and electronics apparatus |
| WO2018209785A1 (en) * | 2017-05-16 | 2018-11-22 | 深圳市华星光电技术有限公司 | Light guide plate, backlight module, and display device |
| US10649129B2 (en) | 2017-05-16 | 2020-05-12 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Light guide plate, backlight module and display device |
| CN112147813A (en) * | 2019-06-26 | 2020-12-29 | 中强光电股份有限公司 | Light source module and display device |
| CN113552664A (en) * | 2014-10-30 | 2021-10-26 | 东洋纺株式会社 | Liquid crystal display device and polarizing plate |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9645302B2 (en) | 2013-03-21 | 2017-05-09 | Lg Display Co., Ltd. | Backlight unit and display device including the same |
| US9323105B2 (en) | 2013-10-29 | 2016-04-26 | Au Optronics Corporation | Backlight module and display panel using the same |
| CN104635378B (en) * | 2013-11-11 | 2018-12-04 | 乐金显示有限公司 | Back light unit and display device including the back light unit |
| CN104635378A (en) * | 2013-11-11 | 2015-05-20 | 乐金显示有限公司 | Backlight unit and display device comprising the same |
| CN104753127A (en) * | 2013-12-31 | 2015-07-01 | 南京德朔实业有限公司 | Battery pack, charging assembly, electric tool and break line detection method |
| CN104880860B (en) * | 2014-02-27 | 2018-02-02 | 乐金显示有限公司 | Backlight assembly and the liquid crystal display including backlight assembly |
| CN104880860A (en) * | 2014-02-27 | 2015-09-02 | 乐金显示有限公司 | Backlight assembly and liquid crystal display including the same |
| CN105204226A (en) * | 2014-06-20 | 2015-12-30 | 鸿海精密工业股份有限公司 | Backlight module and display device |
| CN106200112A (en) * | 2014-08-22 | 2016-12-07 | 三星电子株式会社 | Framed, back light unit, liquid crystal display and light conversion sheet |
| US10866463B2 (en) | 2014-08-22 | 2020-12-15 | Samsung Electronics Co., Ltd. | Strip, and backlight unit and liquid crystal display including the same |
| CN105402640A (en) * | 2014-09-15 | 2016-03-16 | 扬升照明股份有限公司 | Backlight module |
| CN113552664A (en) * | 2014-10-30 | 2021-10-26 | 东洋纺株式会社 | Liquid crystal display device and polarizing plate |
| CN106292057A (en) * | 2015-06-24 | 2017-01-04 | 乐金显示有限公司 | Liquid crystal indicator including border fluorescence structure body |
| CN107402474A (en) * | 2016-05-19 | 2017-11-28 | 鸿富锦精密工业（深圳）有限公司 | Display device |
| US10862001B2 (en) | 2016-10-08 | 2020-12-08 | Goertek. Inc | Display device and electronics apparatus |
| WO2018064806A1 (en) * | 2016-10-08 | 2018-04-12 | Goertek. Inc | Display device and electronics apparatus |
| US10649129B2 (en) | 2017-05-16 | 2020-05-12 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Light guide plate, backlight module and display device |
| WO2018209785A1 (en) * | 2017-05-16 | 2018-11-22 | 深圳市华星光电技术有限公司 | Light guide plate, backlight module, and display device |
| CN112147813A (en) * | 2019-06-26 | 2020-12-29 | 中强光电股份有限公司 | Light source module and display device |
| CN112147813B (en) * | 2019-06-26 | 2024-03-19 | 中强光电股份有限公司 | Light source module and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201421116A (en) | 2014-06-01 |
| CN103148406B (en) | 2015-10-21 |
| TWI472842B (en) | 2015-02-11 |
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Granted publication date: 20151021 Termination date: 20210118 |