CN102434823A - Liquid crystal display and curve reflective LED (Light Emitting Diode) backlight module thereof - Google Patents
Liquid crystal display and curve reflective LED (Light Emitting Diode) backlight module thereof Download PDFInfo
- Publication number
- CN102434823A CN102434823A CN2011103146054A CN201110314605A CN102434823A CN 102434823 A CN102434823 A CN 102434823A CN 2011103146054 A CN2011103146054 A CN 2011103146054A CN 201110314605 A CN201110314605 A CN 201110314605A CN 102434823 A CN102434823 A CN 102434823A
- Authority
- CN
- China
- Prior art keywords
- lamp bar
- led
- lamp
- curved face
- backboard
- 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
Images
Landscapes
- Planar Illumination Modules (AREA)
Abstract
The invention discloses a liquid crystal display and a curve reflective LED backlight module thereof, which comprises a rear plate cavity for transmitting light in the air; the rear plate cavity is composed of a rear plate and a diffusion optical part; the rear plate is provided with LED lamp strips; a curve reflector plate is further arranged in the rear plate cavity for reflecting the light from the LED lamp strip on the diffusion optical part; the transverse section of the reflector plate is in a smooth arc shape and the concave surface of the section is faced to the diffusion optical part. A curve reflector plate with a concave surface facing to the diffusion optical part is adopted, so that part of light of the LED lamp source is reflected on the diffusion optical part and the light reflected from the surface of the diffusion optical part is reflected to the diffusion optical part again; consequently, uneven brightness or lamp shadow of a strip or square lamp is reduced; a light guide plate is saved; the usage quantities of the LED lamp sources and PCB boards are reduced, and the usage quantities of the LED lamp source optical lenses are also reduced and even saved, so that the costs of the liquid crystal display and the curve reflective LED backlight module thereof are greatly reduced; meanwhile, the liquid crystal display and the curve reflective LED backlight module thereof are featured with simple structure, convenient manufacture and easy mass production.
Description
Technical field
The present invention relates to the LED-backlit module field of no LGP in the LCD, in particular, what improvement related to is a kind of LCD and curved face reflecting type LED module backlight thereof.
Background technology
Nowadays, TFT-LCD (Thin Film Transistor-LCD) as the clear beautiful display of saving the energy again of a kind of ultrathin picture, is widely used in mobile phone, computer monitor, TV etc.; Yet TFT-LCD itself is not luminous, and needing backlight could display image.
Widely-used CCFL (Cold Cathode Fluorescent Lamp, cathode fluorescent tube) of the various demonstration products of popularizing in the market or LED (light emitting diode) backlight, the light inlet mode all adopts straight-down negative or side entering type.Along with the development of LED lamp technology and the market demand to environmental protection and energy saving has been tending towards obviously, the module backlight of led light source has become the main flow of this 2 years prior aries.The module backlight of led light source has advantages such as energy-saving and environmental protection, low-power consumption, is example with the TV, and the ratio of LED-backlit module LCD TV is in rapid expansion in the existing market.
Because the LGP raw material PMMA (polymethyl methacrylate of side entering type type; Be lucite, also claim acrylic or polymethyl methacrylate) in short supply, its price proportion in module backlight is bigger; And the trend that rise in price is arranged causes some manufacturer to turn to the straight-down negative type; The LED lamp source of straight-down negative type then needs a large amount of circuit boards, if will reduce LED lamp source quantity then need increase optical lens, makes that the cost of straight-down negative type is also high; In addition; Be in the transitional period of CCFL light source to led light source at present, the structural member mould of production in enormous quantities CCFL machine will leave unused or be discarded, and how designing the LED-backlit module can reduce cost; Especially can take into account original CCFL machine structural member, become the focus of each manufacturer.Therefore, prior art still haves much room for improvement and develops.
Summary of the invention
The objective of the invention is to, provide a kind of LCD and curved face reflecting type LED thereof module backlight, can reduce cost, and can take into account original CCFL machine structural member.
Technical scheme of the present invention is following: a kind of curved face reflecting type LED module backlight comprises the backboard chamber of being made up of air transmitted LED lamp source light backboard and diffuse optical parts; Backboard is provided with the lamp bar in welding LED lamp source; Wherein: in said backboard chamber, also be provided with the reflector plate of curved face type, be used for the light that send in LED lamp source on the lamp bar is reflexed to the diffuse optical parts; The cross section of said reflector plate is smooth camber line shape, and the concave surface of reflector plate is towards the diffuse optical parts.
Described curved face reflecting type LED module backlight, wherein: said lamp bar comprises the first lamp bar and the second lamp bar; The said first lamp bar is arranged on the bottom surface in backboard chamber; The said second lamp bar is arranged on the side in backboard chamber, and the installed surface of the second lamp bar and the mutual vertical setting of the installed surface of the first lamp bar.
Described curved face reflecting type LED module backlight, wherein: the spacing on the said first lamp bar between the adjacent two LED lamp sources is greater than the spacing between the adjacent two LED lamp sources on the said second lamp bar.
Described curved face reflecting type LED module backlight, wherein: said lamp bar comprises the first lamp bar and the second lamp bar; The said first lamp bar is arranged on the bottom surface in backboard chamber; The said second lamp bar is arranged on the side in backboard chamber, and the installed surface of the second lamp bar is obliquely installed towards the bottom surface in backboard chamber.
Described curved face reflecting type LED module backlight, wherein: the spacing on the said first lamp bar between the adjacent two LED lamp sources is greater than the spacing between the adjacent two LED lamp sources on the said second lamp bar.
Described curved face reflecting type LED module backlight, wherein: said lamp bar comprises the first lamp bar and the second lamp bar; The said first lamp bar is arranged on the bottom surface in backboard chamber; The said second lamp bar is arranged on the side in backboard chamber, and the installed surface of the second lamp bar is obliquely installed towards the diffuse optical parts.
Described curved face reflecting type LED module backlight, wherein: the spacing on the said first lamp bar between the adjacent two LED lamp sources is greater than the spacing between the adjacent two LED lamp sources on the said second lamp bar.
A kind of LCD comprises the LED-backlit module at the liquid crystal board and the back side thereof; Said liquid crystal board and LED-backlit module all are provided with in the enclosure; Wherein: said LED-backlit module is set to above-mentioned each described curved face reflecting type LED module backlight.
A kind of LCD provided by the present invention and curved face reflecting type LED module backlight thereof; Owing to adopted the curved face type reflector plate of concave surface towards the diffuse optical parts, directly the part light with LED lamp source reflexes on the diffuse optical parts, and will reflect from the light of diffuse optical parts surface reflection again; Until turning back on the diffuse optical parts; Alleviate phenomenons such as bar blocks shape brightness disproportionation that existing LED-backlit module produces or lamp shadow, saved LGP, reduced the consumption of LED lamp source and pcb board thereof; Also reduce even saved the consumption of LED lamp source optical lens, greatly reduce the material cost of LED-backlit module; Simultaneously simple in structure, easy to process, be easy to produce in batches, and be fit to use the structural member of original CCFL machine.
Description of drawings
Fig. 1 is the side sectional view of curved face reflecting type LED of the present invention module embodiment 1 backlight.
Fig. 2 is the side sectional view of curved face reflecting type LED of the present invention module embodiment 2 backlight.
Fig. 3 is the side sectional view of curved face reflecting type LED of the present invention module embodiment 3 backlight.
Fig. 4 is the part front view of curved face reflecting type LED of the present invention module embodiment 1 backlight.
The specific embodiment
Below will combine accompanying drawing, specific embodiments of the invention and embodiment specify, and described specific embodiment in order to explain the present invention, is not to be used to limit the specific embodiment of the present invention only.
A kind of curved face reflecting type LED of the present invention module backlight, as shown in Figure 1, the lamp bar 310 (320 or 330) that comprises chamber shape backboard 100, plate diffuse optical parts 200 and form by the pcb board that is welded with plurality of LEDs lamp source; The top side face 120 of said backboard 100 is perpendicular with the bottom surface 110 of this backboard 100 respectively with bottom side 130; Said backboard 100 is formed the backboard chamber with closed interior space structure with diffuse optical parts 200, is used for going up the light that LED lamp source is sent through air transmitted lamp bar 310 (320 or 330); Wherein, In said backboard chamber, also be provided with the reflector plate 400 of curved face type; The cross section of said reflector plate 400 is smooth camber line shape; The concave surface of said reflector plate 400 is used for that said lamp bar 310 (320 or 330) is gone up the light that sends in LED lamp source and reflexes to diffuse optical parts 200 towards diffuse optical parts 200; The said reflector plate 400 curved belows that are positioned over said lamp bar 310 (320 and 330) are so that the illumination effect on the diffuse optical parts 200 as far as possible evenly.
In the preferred implementation of curved face reflecting type LED of the present invention module backlight, as shown in Figure 1, shown in, said lamp bar 310 (320 or 330) comprises at least one group (/ root/bar) first lamp bar 310 and at least one group of (/ root/bar) second lamp bar (320 or/and 330); The said first lamp bar 310 is horizontally installed on the bottom surface 110 of backboard 100; The said second lamp bar 320 (or/and 330) is horizontally installed on the top side face 120 and/or bottom side 130 in backboard chamber; Form the illumination mode that side entering type and straight-down negative mix mutually thus.
The said second lamp bar (320 or/and 330) but on light air-borne transmission in not having the backboard chamber of LGP of sending of LED lamp source; Part light shines directly on the diffuse optical parts 200, and another part light arrives on the diffuse optical parts 200 through the reflection of curved face type reflector plate 400; Arrive the light on the diffuse optical parts 200, part refraction gets into diffuse optical parts 200 inside and carries out diffuse reflection, continues on another part reflected back curved face type reflector plate 400 to propagate, and gets into diffuse optical parts 200 inside until refraction; In the far away and more weak zone of the light that seems of the distance second lamp bar (320 or 330), so can compensate by the LED lamp source on the said first lamp bar 310.
Be preferably,, perhaps, can on the LED lamp source of the said first lamp bar 310, increase optical lens in order to reduce the consumption of led light source in the LED-backlit module for the thickness in attenuate backboard chamber.
In the embodiment shown in fig. 1, the light-emitting area in LED lamp source and the bottom surface 110 in backboard chamber parallel on the said first lamp bar 310, and the said second lamp bar (320 or 330) is gone up the light-emitting area in LED lamp source and the top side face 120 or the bottom side 130 in backboard chamber parallels; The i.e. installed surface of the installed surface of the second lamp bar (320 or 330) and the first lamp bar 310 vertical setting each other; The position of the said first lamp bar 310 and quantity can be confirmed according to the position and the quantity of the said second lamp bar (320 or 330); When the said second lamp bar 320 only was arranged on the top side face 120 in backboard chamber, the said first lamp bar 310 can be arranged on the latter half of bottom surface, backboard chamber 110; When the said second lamp bar 330 only was arranged on the bottom side 130 in backboard chamber, the said first lamp bar 310 can be arranged on the first half of bottom surface, backboard chamber 110; The top side face 120 that is separately positioned on the backboard chamber when the said second lamp bar (320 and 330) is during with bottom side 130, and the said first lamp bar 310 can be arranged on the mid portion of bottom surface, backboard chamber 110; In addition, the LED lamp source quantity on LED lamp source quantity on the said first lamp bar 310 and the said second lamp bar (320 and/or 330), and both proportionate relationships quantitatively can be confirmed according to LED-backlit module concrete size and cost balance.
In the embodiment shown in Figure 2, different is with embodiment among Fig. 1, and the installed surface of the said second lamp bar (320 and/or 330) is obliquely installed towards the bottom surface 110 in backboard chamber, the setting that slopes inwardly of the light-emitting area of the promptly said second lamp bar (320 and/or 330); The big I of the angle that specifically slopes inwardly is confirmed according to the factors such as lighting angle in backboard 100 sizes and LED lamp source itself.
In the embodiment shown in fig. 3, different is that the installed surface of the said second lamp bar (320 and/or 330) is obliquely installed towards diffuse optical parts 200, the outward-dipping setting of light-emitting area of the promptly said second lamp bar (320 and/or 330) with embodiment among Fig. 1; The big I of concrete outward-dipping angle is confirmed according to the factors such as lighting angle in backboard 100 sizes and LED lamp source itself.
With embodiment shown in Figure 1 is example, and further, in conjunction with shown in Figure 4, the spacing on the said first lamp bar 310 between the adjacent two LED lamp sources 311 is greater than the spacing between the last adjacent two LED lamp sources (322 or 333) of the said second lamp bar (320 or 330); That is to say that it is more sparse that LED lamp source (the 322 or 333) arranging density on the relative second lamp bars of LED lamp source 311 arranging densities (320 or 330) on the said first lamp bar 310 is wanted; So that the lamp shadow on the diffuse optical parts 200 is more even.Same, Fig. 2 and embodiment shown in Figure 3 also can have similar structure shown in Figure 4, repeat no more at this.
Based on above-mentioned curved face reflecting type LED module backlight, the invention allows for a kind of LCD, comprise the LED-backlit module at the liquid crystal board and the back side thereof; Said liquid crystal board and LED-backlit module all are provided with in the enclosure; Wherein: said LED-backlit module can be set to the described flat reflective LED-backlit of above-mentioned each specific embodiment module.
Compare with LCD of the prior art and LED-backlit module thereof; A kind of LCD provided by the present invention and curved face reflecting type LED module backlight thereof; Owing to adopted the curved face type reflector plate of concave surface towards the diffuse optical parts, directly the part light with LED lamp source reflexes on the diffuse optical parts, and will reflect from the light of diffuse optical parts surface reflection again; Until turning back on the diffuse optical parts; Alleviate phenomenons such as bar blocks shape brightness disproportionation that existing LED-backlit module produces or lamp shadow, saved LGP, reduced the consumption of LED lamp source and pcb board thereof; Also reduce even saved the consumption of LED lamp source optical lens, greatly reduce the material cost of LED-backlit module; Simultaneously simple in structure, easy to process, be easy to produce in batches, and be fit to use the structural member of original CCFL machine.
Should be understood that; The above is merely preferred embodiment of the present invention, is not sufficient to limit technical scheme of the present invention, concerning those of ordinary skills; Within spirit of the present invention and principle; Can increase and decrease according to above-mentioned explanation, replacement, conversion or improvement, and all these increases and decreases, replacement, conversion or improve after technical scheme, all should belong to the protection domain of accompanying claims of the present invention.
Claims (8)
1. a curved face reflecting type LED module backlight comprises the backboard chamber of being made up of air transmitted LED lamp source light backboard and diffuse optical parts; Backboard is provided with the lamp bar in welding LED lamp source; It is characterized in that: in said backboard chamber, also be provided with the reflector plate of curved face type, be used for the light that send in LED lamp source on the lamp bar is reflexed to the diffuse optical parts; The cross section of said reflector plate is smooth camber line shape, and the concave surface of reflector plate is towards the diffuse optical parts.
2. curved face reflecting type LED according to claim 1 module backlight is characterized in that: said lamp bar comprises the first lamp bar and the second lamp bar; The said first lamp bar is arranged on the bottom surface in backboard chamber; The said second lamp bar is arranged on the side in backboard chamber, and the installed surface of the second lamp bar and the mutual vertical setting of the installed surface of the first lamp bar.
3. curved face reflecting type LED according to claim 2 module backlight is characterized in that: the spacing on the said first lamp bar between the adjacent two LED lamp sources is greater than the spacing between the adjacent two LED lamp sources on the said second lamp bar.
4. curved face reflecting type LED according to claim 1 module backlight is characterized in that: said lamp bar comprises the first lamp bar and the second lamp bar; The said first lamp bar is arranged on the bottom surface in backboard chamber; The said second lamp bar is arranged on the side in backboard chamber, and the installed surface of the second lamp bar is obliquely installed towards the bottom surface in backboard chamber.
5. curved face reflecting type LED according to claim 4 module backlight is characterized in that: the spacing on the said first lamp bar between the adjacent two LED lamp sources is greater than the spacing between the adjacent two LED lamp sources on the said second lamp bar.
6. curved face reflecting type LED according to claim 1 module backlight is characterized in that: said lamp bar comprises the first lamp bar and the second lamp bar; The said first lamp bar is arranged on the bottom surface in backboard chamber; The said second lamp bar is arranged on the side in backboard chamber, and the installed surface of the second lamp bar is obliquely installed towards the diffuse optical parts.
7. curved face reflecting type LED according to claim 6 module backlight is characterized in that: the spacing on the said first lamp bar between the adjacent two LED lamp sources is greater than the spacing between the adjacent two LED lamp sources on the said second lamp bar.
8. LCD comprises the LED-backlit module at the liquid crystal board and the back side thereof; Said liquid crystal board and LED-backlit module all are provided with in the enclosure; It is characterized in that: said LED-backlit module is set to each described curved face reflecting type LED module backlight in the claim 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110314605.4A CN102434823B (en) | 2011-10-17 | 2011-10-17 | A kind of liquid crystal display and curved face reflecting type LED backlight module thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110314605.4A CN102434823B (en) | 2011-10-17 | 2011-10-17 | A kind of liquid crystal display and curved face reflecting type LED backlight module thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102434823A true CN102434823A (en) | 2012-05-02 |
| CN102434823B CN102434823B (en) | 2015-10-28 |
Family
ID=45983051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110314605.4A Active CN102434823B (en) | 2011-10-17 | 2011-10-17 | A kind of liquid crystal display and curved face reflecting type LED backlight module thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102434823B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388776A (en) * | 2012-05-11 | 2013-11-13 | 扬升照明股份有限公司 | Backlight module |
| CN104332112A (en) * | 2014-10-24 | 2015-02-04 | 深圳市华星光电技术有限公司 | Transparent display device |
| CN115013754A (en) * | 2021-03-05 | 2022-09-06 | 北京字节跳动网络技术有限公司 | Light-emitting module and desk lamp |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020039292A1 (en) * | 2000-09-29 | 2002-04-04 | Hirokazu Matsui | Backlight illuminator |
| JP2004227991A (en) * | 2003-01-24 | 2004-08-12 | Koichi Matsui | Directly-under type lighting device |
| KR20090056866A (en) * | 2007-11-29 | 2009-06-03 | 스미또모 가가꾸 가부시끼가이샤 | Surface light source device |
| CN101859037A (en) * | 2009-04-10 | 2010-10-13 | 康佳集团股份有限公司 | Liquid crystal display (LCD) device |
| CN101907249A (en) * | 2009-06-08 | 2010-12-08 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
| CN101968185A (en) * | 2010-07-30 | 2011-02-09 | 南京中电熊猫液晶显示科技有限公司 | Thin-type LED (Light-Emitting Diode) backlight source |
-
2011
- 2011-10-17 CN CN201110314605.4A patent/CN102434823B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020039292A1 (en) * | 2000-09-29 | 2002-04-04 | Hirokazu Matsui | Backlight illuminator |
| JP2004227991A (en) * | 2003-01-24 | 2004-08-12 | Koichi Matsui | Directly-under type lighting device |
| KR20090056866A (en) * | 2007-11-29 | 2009-06-03 | 스미또모 가가꾸 가부시끼가이샤 | Surface light source device |
| CN101859037A (en) * | 2009-04-10 | 2010-10-13 | 康佳集团股份有限公司 | Liquid crystal display (LCD) device |
| CN101907249A (en) * | 2009-06-08 | 2010-12-08 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
| CN101968185A (en) * | 2010-07-30 | 2011-02-09 | 南京中电熊猫液晶显示科技有限公司 | Thin-type LED (Light-Emitting Diode) backlight source |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103388776A (en) * | 2012-05-11 | 2013-11-13 | 扬升照明股份有限公司 | Backlight module |
| CN103388776B (en) * | 2012-05-11 | 2015-07-29 | 扬升照明股份有限公司 | Backlight module |
| US9297518B2 (en) | 2012-05-11 | 2016-03-29 | Young Lighting Technology Inc. | Backlight module |
| CN104332112A (en) * | 2014-10-24 | 2015-02-04 | 深圳市华星光电技术有限公司 | Transparent display device |
| CN115013754A (en) * | 2021-03-05 | 2022-09-06 | 北京字节跳动网络技术有限公司 | Light-emitting module and desk lamp |
| CN115013754B (en) * | 2021-03-05 | 2023-06-06 | 北京字节跳动网络技术有限公司 | Light-emitting module and desk lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102434823B (en) | 2015-10-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202048503U (en) | LED (Light-Emitting Diode) backlight module diffusion board | |
| CN102767762A (en) | Backlight module | |
| CN100562786C (en) | Light supply apparatus | |
| CN101666462A (en) | Edge-lighting backlight module and light guide element and linear light source thereof | |
| CN106019709A (en) | Liquid crystal module and liquid crystal display screen | |
| CN102620193A (en) | Sectional light emitting diode (LED) backlight module and liquid crystal display device | |
| CN101994955A (en) | Planar illumination device | |
| CN110161755A (en) | A kind of backlight module and liquid crystal display device | |
| CN101994956A (en) | Planar illumination device | |
| JP3107016U (en) | Direct-type backlight module with high emission uniformity | |
| CN201218442Y (en) | Backlight module and LCD device containing the same | |
| CN106896576A (en) | A kind of ultra-thin downward back photo structure | |
| WO2013181865A1 (en) | Edge-lighting backlight module | |
| CN102434823B (en) | A kind of liquid crystal display and curved face reflecting type LED backlight module thereof | |
| CN104819409A (en) | LCD backlight module structure | |
| CN201787495U (en) | Light guide plate, backlight source and lighting device | |
| US9405149B2 (en) | Direct backlight module | |
| CN102374493A (en) | Light guide plate, backlight source and illuminating device | |
| CN202266945U (en) | Side-light type backlight module | |
| CN102359716B (en) | A kind of liquid crystal display and flat reflective LED-backlit module thereof | |
| CN102182968A (en) | Novel LED (light-emitted diode) backlight module | |
| CN202229018U (en) | Backlight and liquid crystal display with same | |
| CN201335305Y (en) | Backlight module | |
| CN208795981U (en) | Backlight module, liquid crystal module and LCD TV | |
| CN202647412U (en) | Glass light guide plate side-entering type light-emitting diode (LED) backlight module |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |