CN102359716B - A kind of liquid crystal display and flat reflective LED-backlit module thereof - Google Patents
A kind of liquid crystal display and flat reflective LED-backlit module thereof Download PDFInfo
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- CN102359716B CN102359716B CN201110314590.1A CN201110314590A CN102359716B CN 102359716 B CN102359716 B CN 102359716B CN 201110314590 A CN201110314590 A CN 201110314590A CN 102359716 B CN102359716 B CN 102359716B
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- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000003760 hair shine Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
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- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- 239000002184 metal Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
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Abstract
The invention discloses a kind of liquid crystal display and flat reflective LED-backlit module thereof, comprise the backboard chamber being made up of air transmitted light backboard and diffuse optical parts; Backboard is provided with LED lamp bar; Plane reflector plate is also provided with, for the light reflection that LED lamp bar sent to diffuse optical parts in backboard chamber; Reflector plate transversal section is smooth linear, and abuts on the bottom surface of backboard.Owing to have employed the plane reflector plate abutted on backboard bottom surface, directly by the part light reflection of LED lamp source on diffuse optical parts, diffuse optical parts are reflected back again with by the light reflected from diffuse optical parts surface, alleviate the phenomenons such as bar blocks shape brightness disproportionation or lamp shadow, save light guide plate, decrease the consumption of LED lamp source and pcb board thereof, also reduce the consumption even saving LED lamp source optical lens, greatly reduce cost; Structure is simple simultaneously, easy to process, is easy to batch production.
Description
Technical field
The present invention relates to the LED-backlit module field without light guide plate in liquid crystal display, in particular, what improvement related to is a kind of liquid crystal display and flat reflective LED-backlit module thereof.
Background technology
Along with development and market the becoming clear day by day to environmental protection and energy saving demand of LED technology, the backlight module of LED light source has become the main flow of nearly 2 years liquid crystal display; Because LED light source has the advantage of energy-saving and environmental protection and low-power consumption, except being applied to mobile phone, outside computer monitor, for TV, in existing market, the ratio of LED-backlit module LCD TV is in rapid expansion.
The light source light inlet mode of current LED-backlit module LCD TV has side entering type and straight-down negative two kinds, due to the light guide plate starting material PMMA (polymethylmethacrylate of side entering type type, i.e. organic glass, also claim acrylic or polymethyl methacrylate) in short supply, its price proportion in backlight module is larger, and have the trend of rise in price, cause some manufacturer to turn to straight-down negative type; The LED lamp source of straight-down negative type then needs a large amount of circuit boards, then needs to increase optical lens, the cost of straight-down negative type is also remained high to reduce LED lamp source quantity; In addition, be in CCFL (ColdCathodeFluorescentLamp at present, cathode fluorescent tube) light source is to transitional period of LED light source, the structural member mould producing CCFL machine in enormous quantities will leave unused or discard, how to design LED-backlit module can reduce costs, 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 object of the invention is to, a kind of liquid crystal display and flat reflective LED-backlit module thereof are provided, can reduce costs, and original CCFL machine structural member can be taken into account.
Technical scheme of the present invention is as follows: a kind of flat reflective LED-backlit module, comprises the backboard chamber being made up of air transmitted LED lamp source light backboard and diffuse optical parts; Backboard is provided with the lamp bar of welding LED lamp source; Wherein: the reflector plate being also provided with plane in described backboard chamber, for light reflection that LED lamp source on lamp bar is sent to diffuse optical parts; The transversal section of described reflector plate is smooth linear, and abuts on the bottom surface of backboard; Described lamp bar comprises the first lamp bar and the second lamp bar, described first lamp bar is arranged on the bottom surface in backboard chamber, the LED lamp source of described first lamp bar is provided with optical lens, described second lamp bar is arranged on the side in backboard chamber, spacing on described first lamp bar between adjacent two LED lamp source is greater than the spacing on described second lamp bar between adjacent two LED lamp source, and the bottom surface in described backboard chamber is provided with transversal section fixed strip triangular in shape; Described lamp bar is separately positioned on two sides of this fixed strip; The dual-side of described reflector plate stretches out, and forms the plane of reflection tilted towards diffuse optical parts respectively, and the top edge rounding of described fixed strip is arranged, and is positioned at the interlaced setting in LED lamp source position on same fixed strip two sides.
A kind of liquid crystal display, comprises the LED-backlit module at liquid crystal board and the back side thereof; Described liquid crystal board and LED-backlit module are all arranged in the enclosure; Wherein: described LED-backlit module is set to described flat reflective LED-backlit module.
A kind of liquid crystal display provided by the present invention and flat reflective LED-backlit module thereof, owing to have employed the plane reflector plate abutted on backboard bottom surface, directly by the part light reflection of LED lamp source on diffuse optical parts, and the light reflected from diffuse optical parts surface is reflected again, until turn back on diffuse optical parts, alleviate bar blocks shape brightness disproportionation or the phenomenon such as lamp shadow that existing LED-backlit module produces, save light guide plate, decrease the consumption of LED lamp source and pcb board thereof, also the consumption even saving LED lamp source optical lens is reduced, greatly reduce the material cost of LED-backlit module, structure is simple simultaneously, easy to process, is easy to batch production, and is applicable to the structural member using original CCFL machine.
Accompanying drawing explanation
Fig. 1 is the side sectional view of flat reflective LED-backlit module embodiment 1 of the present invention.
Fig. 2 is the side sectional view of flat reflective LED-backlit module embodiment 2 of the present invention.
Fig. 3 is the fragmentary front view of flat reflective LED-backlit module embodiment 1 or 2 of the present invention.
Fig. 4 is the side sectional view of flat reflective LED-backlit module embodiment 3 of the present invention.
Fig. 5 is the fragmentary front view of flat reflective LED-backlit module embodiment 3 of the present invention.
Embodiment
Below with reference to accompanying drawing, described in detail the specific embodiment of the present invention and embodiment, described specific embodiment only in order to explain the present invention, is not intended to limit the specific embodiment of the present invention.
A kind of flat reflective LED-backlit module of the present invention, as shown in Figure 1, the lamp bar 310 (320 or 330) comprising chamber shape backboard 100, diffuse optical parts 200 and be made up of the pcb board being welded with plurality of LEDs lamp source 311 (322 or 333); The top side face 120 of described backboard 100 and bottom side 130 are perpendicular with the bottom surface 110 of this backboard 100 respectively; Described backboard 100 forms the backlight cavities or backboard chamber with closed interior space structure with diffuse optical parts 200, for the light sent by the upper LED lamp source 311 (322 or 333) of air transmitted lamp bar 310 (320 or 330); Wherein, the reflector plate 400 of plane is also provided with in described backboard chamber, the transversal section of described reflector plate 400 is smooth linear, described reflector plate 400 abuts on the bottom surface 110 of backboard 100, for the light reflection that upper for described lamp bar 310 (320 or 330) LED lamp source 311 (322 or 333) sent to diffuse optical parts 200.
In the preferred implementation of flat reflective LED-backlit module of the present invention, as shown in Figure 1, described lamp bar 310 (320 or 330) comprises at least one group (/ root/bar) first lamp bar 310 and at least one group (/ root/bar) second lamp bar 320 (or/and 330); Described first lamp bar 310 is horizontally installed on the bottom surface 110 in backboard chamber; Described second lamp bar 320 is or/and on 330 top side face 120 being horizontally installed on backboard chamber and/or bottom side 130; Form the illumination mode that side entering type mixes mutually with straight-down negative thus; Due to the luminescence of lamp source adopt side entering type and straight-down negative hybrid, the more weak part of light can obtain light compensation.
The light that LED lamp source (322 or/and 333) on described second lamp bar 320 (or/and 330) sends can air-borne transmission in the backboard chamber not having light guide plate, part light shines directly on diffuse optical parts 200, and another part light arrives on diffuse optical parts 200 through the reflection of plane reflector plate 400; Arrive in the light on diffuse optical parts 200, part refraction enters diffuse optical parts 200 inside and carries out diffuse reflection and then penetrate bright dipping, another part is reflected back on plane reflector plate 400 and continues to propagate, until refraction enters diffuse optical parts 200 inside; The region that the light that seems is more weak distance the second lamp bar (320 or 330) is comparatively far away, can be compensated by the LED lamp source 311 on described first lamp bar 310.
As shown in Figure 2, being preferably, in order to the thickness in thinning backboard chamber, or in order to reduce the consumption of LED light source 311 in LED-backlit module, optical lens 312 can being increased in the LED lamp source 311 of described first lamp bar 310.
In the embodiment shown in Fig. 1 or Fig. 2, concrete, on described first lamp bar 310, the light-emitting area of LED lamp source 311 parallels with the bottom surface 110 in backboard chamber, and the upper light-emitting area of LED lamp source (322 or 333) of described second lamp bar (320 or 330) parallels with the top side face 120 in backboard chamber or bottom side 130; The position of described first lamp bar 310 and quantity can be determined according to the position of described second lamp bar (320 or 330) and quantity; When described second lamp bar 320 is only arranged on the top side face 120 in backboard chamber, described first lamp bar 310 can be arranged on the latter half of bottom surface, backboard chamber 110; When described second lamp bar 330 is only arranged on the bottom side 130 in backboard chamber, described first lamp bar 310 can be arranged on the first half of bottom surface, backboard chamber 110; When described second lamp bar (320 and 330) is separately positioned on top side face 120 and the bottom side 130 in backboard chamber, described first lamp bar 310 can be arranged on the center section of bottom surface, backboard chamber 110; In addition, LED lamp source (322 and/or 333) quantity on LED lamp source 311 quantity on described first lamp bar 310 and described second lamp bar (320 and/or 330), and both proportionate relationships quantitatively, can determine according to the concrete size of LED-backlit module and cost trade-offs.
In the embodiment shown in Fig. 1 or Fig. 2, further, shown in composition graphs 3, the spacing on described first lamp bar 310 between adjacent two LED lamp source 311 is greater than the spacing between upper adjacent two LED lamp source (322 or 333) of described second lamp bar (320 or 330); That is, LED lamp source 311 arranging density on described first lamp bar 310 wants more sparse relative to LED lamp source (the 322 or 333) arranging density on the second lamp bar (320 or 330); LED lamp source 311 on described first lamp bar 310 can be upper LED lamp source (the 322 or 333) light of the second lamp bar (320 or 330) and irradiates comparatively weak-strong test and play light compensating action.
In addition, in the preferred implementation of flat reflective LED-backlit module of the present invention, as shown in Figure 4, the bottom surface 110 in described backboard chamber is horizontally arranged with transversal section fixed strip triangular in shape 500; Described lamp bar is separately positioned on two sides of this fixed strip 500; The dual-side up and down of described reflector plate 400 stretches out, and forms the plane of reflection 410 tilted towards diffuse optical parts 200 respectively; Form a kind of special straight-down negative illumination mode thus; Because the luminescence of lamp source is launched at an angle, the more weak part of light can obtain light compensation.
The light that LED lamp source 544 on described fixed strip 500 two sides sends can air-borne transmission in the backboard chamber not having light guide plate, owing to being arranged on leg-of-mutton fixed strip 500, the light that LED lamp source 544 sends presents certain angle, part light shines directly on diffuse optical parts 200, and another part light arrives on diffuse optical parts 200 through plane reflector plate 400 and the reflection of the plane of reflection 410 that extends thereof; Arrive in the light on diffuse optical parts 200, part refraction enters diffuse optical parts 200 inside and carries out diffuse reflection and penetrate bright dipping, another part is reflected back on plane reflector plate 400 and the plane of reflection 410 that extends thereof and continues to propagate, until refraction to enter diffuse optical parts 200 inner; Region above a fixed strip 500, except can being compensated by the plane of reflection 410 reflection ray that reflector plate 400 extends, can also carry out light compensation by the LED lamp source 544 on another fixed strip 500.
Concrete, described fixed strip 500 can be aluminium section bar entity, also can be metal framework; The bottom surface of described fixed strip 500 is pasted onto on the bottom surface 110 in backboard chamber by available heat-conducting glue, also can be fixed with screw or rivet; The quantity of described fixed strip 500, according to the concrete size of LED-backlit module and thickness, can select one or two or more pieces arranged in parallel; Described lamp bar can be arranged on the position of triangle fixed strip 500 drift angle as far as possible; The drift angle of described fixed strip 500 can be wedge angle, also can arrange by rounding; The large I of drift angle angle theta of described fixed strip 500 arrives the height ratio set of diffuse optical parts 200 according to the spacing between fixed strip 500 and reflector plate 400, such as, can arrange the equilateral triangle that drift angle angle theta is 60 °.
In the embodiment shown in fig. 4, further, shown in composition graphs 5, be positioned at the interlaced setting in LED lamp source 544 position on same fixed strip 500 two sides, bar blocks shape brightness disproportionation can be avoided thus.
Based on above-mentioned flat reflective LED-backlit module, the invention allows for a kind of liquid crystal display, comprise the LED-backlit module at liquid crystal board and the back side thereof; Described liquid crystal board and LED-backlit module are all arranged in the enclosure; Wherein: described LED-backlit module can be set to the flat reflective LED-backlit module described in above-mentioned any one specific embodiment.
Compared with liquid crystal display of the prior art and LED-backlit module thereof, a kind of liquid crystal display provided by the present invention and flat reflective LED-backlit module thereof, owing to have employed the plane reflector plate abutted on backboard bottom surface, directly by the part light reflection of LED lamp source on diffuse optical parts, and the light reflected from diffuse optical parts surface is reflected again, until turn back on diffuse optical parts, alleviate bar blocks shape brightness disproportionation or the phenomenon such as lamp shadow that existing LED-backlit module produces, save light guide plate, decrease the consumption of LED lamp source and pcb board thereof, also the consumption even saving LED lamp source optical lens is reduced, greatly reduce the material cost of LED-backlit module, structure is simple simultaneously, easy to process, is easy to batch production, and is applicable to the structural member using original CCFL machine.
Should be understood that; the foregoing is only preferred embodiment of the present invention; be not sufficient to limit technical scheme of the present invention; for those of ordinary skills; within the spirit and principles in the present invention; can be increased and decreased according to the above description, replaced, converted or improved, and all these increases and decreases, replacement, conversion or the technical scheme after improving, all should belong to the protection domain of claims of the present invention.
Claims (2)
1. a flat reflective LED-backlit module, comprises the backboard chamber being made up of air transmitted LED lamp source light backboard and diffuse optical parts; Backboard is provided with the lamp bar of welding LED lamp source; It is characterized in that: the reflector plate being also provided with plane in described backboard chamber, for light reflection that LED lamp source on lamp bar is sent to diffuse optical parts; The transversal section of described reflector plate is smooth linear, and abuts on the bottom surface of backboard; Described lamp bar comprises the first lamp bar and the second lamp bar, described first lamp bar is arranged on the bottom surface in backboard chamber, the LED lamp source of described first lamp bar is provided with optical lens, described second lamp bar is arranged on the side in backboard chamber, spacing on described first lamp bar between adjacent two LED lamp source is greater than the spacing on described second lamp bar between adjacent two LED lamp source, and the bottom surface in described backboard chamber is provided with transversal section fixed strip triangular in shape; Described lamp bar is separately positioned on two sides of this fixed strip; The dual-side of described reflector plate stretches out, and forms the plane of reflection tilted towards diffuse optical parts respectively, and the top edge rounding of described fixed strip is arranged, and is positioned at the interlaced setting in LED lamp source position on same fixed strip two sides.
2. a liquid crystal display, comprises the LED-backlit module at liquid crystal board and the back side thereof; Described liquid crystal board and LED-backlit module are all arranged in the enclosure; It is characterized in that: described LED-backlit module is set to flat reflective LED-backlit module according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110314590.1A CN102359716B (en) | 2011-10-17 | 2011-10-17 | A kind of liquid crystal display and flat reflective LED-backlit module thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110314590.1A CN102359716B (en) | 2011-10-17 | 2011-10-17 | A kind of liquid crystal display and flat reflective LED-backlit module thereof |
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| Publication Number | Publication Date |
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| CN102359716A CN102359716A (en) | 2012-02-22 |
| CN102359716B true CN102359716B (en) | 2016-03-16 |
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| CN201110314590.1A Active CN102359716B (en) | 2011-10-17 | 2011-10-17 | A kind of liquid crystal display and flat reflective LED-backlit module thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105258027B (en) | 2015-10-30 | 2018-11-27 | 北京京东方茶谷电子有限公司 | Backlight module and display device |
| TWI804943B (en) * | 2021-04-21 | 2023-06-11 | 光林智能科技股份有限公司 | Light device control system, light device controller and control method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101063766A (en) * | 2006-04-28 | 2007-10-31 | Lg.菲利浦Lcd株式会社 | Backlight assembly and liquid crystal display device having the same |
| 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 |
| CN201973601U (en) * | 2011-04-13 | 2011-09-14 | 苏州东山精密制造股份有限公司 | Novel backlight module |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101163400B1 (en) * | 2008-03-07 | 2012-07-12 | 엘지디스플레이 주식회사 | Liquid crystal display device |
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- 2011-10-17 CN CN201110314590.1A patent/CN102359716B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101063766A (en) * | 2006-04-28 | 2007-10-31 | Lg.菲利浦Lcd株式会社 | Backlight assembly and liquid crystal display device having the same |
| 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 |
| CN201973601U (en) * | 2011-04-13 | 2011-09-14 | 苏州东山精密制造股份有限公司 | Novel backlight module |
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| CN102359716A (en) | 2012-02-22 |
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Effective date of registration: 20200630 Address after: 23 / F, Guangdong hi tech District Patentee after: Shenzhen Konka Holding Group Co., Ltd Address before: 518053 overseas Chinese town, Shenzhen, Guangdong, Nanshan District Patentee before: KONKA GROUP Co.,Ltd. |