CN102062335A - Backlight module and liquid crystal display device - Google Patents
Backlight module and liquid crystal display device Download PDFInfo
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- CN102062335A CN102062335A CN2010105416246A CN201010541624A CN102062335A CN 102062335 A CN102062335 A CN 102062335A CN 2010105416246 A CN2010105416246 A CN 2010105416246A CN 201010541624 A CN201010541624 A CN 201010541624A CN 102062335 A CN102062335 A CN 102062335A
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Abstract
The invention relates to a backlight module and a liquid crystal display device thereof. The backlight module comprises a light guide plate and a light source generator, wherein the light guide plate is provided with a body, the body is provided with a back and a surface opposite to the back, the body is provided with a plurality of light splitting grooves, the back is provided with a plurality of accommodating grooves, the accommodating groove is provided with a first light incoming part, at least one side of the first light incoming part is extended with a second light incoming part, and the light splitting grooves and the accommodating grooves mutually vertically divide the surface area of the body into a plurality of light emitting surfaces; the light source generator is provided with a circuit board and a plurality of rows of light bars electrically connected on the circuit board, the light source generator is arranged on the back of the body of the light guide plate, and the light bars are positioned in the accommodating grooves; a predetermined distance is formed between the light bars and the second light incoming parts, and the distance forms a light mixing space; and bright spots generated on the backlight module are eliminated, and regional light splitting control is achieved so that the brightness of the light guide plate on the backlight module is more uniform.
Description
Technical field
The present invention relates to a kind of liquid crystal indicator, relate in particular to the backlight module in this liquid crystal indicator.
Background technology
The Region control (Local Dimming) of LED-backlit collocation at present technology, largest benefit are can significantly reduce power consumption, improve the display frame reduced value, grey exponent number, and reduce ghost etc., for other backlight is difficult to replace part.And so-called Region control technology can be accomplished one of technology of zones of different, briliancy light and shade variation in various degree for the LCD display backlight.Just present, reaching spectrophotometric result is main production method in the mode of assembly unit still basically, after just the LGP on the backlight module being made into small size, again with the piecemeal combination of undersized LGP, this kind mode can reach the control of spectrophotometric result, but this mode can produce bright line at the seam crossing of the joint of LGP and LGP, and bright line is difficult for eliminating.
Therefore, existing applicant proposes the application case of No. 098145920 it " flat LGP (LGP) structure and use the backlight module of this light conducting plate structure ", see also the first figure a, b simultaneously, the backlight module that this application case is carried comprises: a LGP 100 and a light source generator 200.Has a body 101 on this LGP 100, have a back side 102 and a surface 103 on this body 101, have on this back side 102 a plurality of ccontaining groove 104 and this surface 103 on have a plurality of beam split groove 105, this beam split groove 105 is vertical corresponding configuration mutually with this ccontaining groove 104.This light source generator 200 has a circuit board 201 and is welded in the striation 202 of the plural number row (row) on this circuit board 201, and this striation 202 is made up of a plural number light emitting diode 203.When this light source generator 200 was assembled with this body 101, this circuit board 201 was covered on the back side 102 of this body 101, and 202 of this striations are arranged in this ccontaining groove 104.When striation 202 was lighted, this beam split groove 105 can effectively reach the effect that separates light source.
Because the light emitting diode 203 of this application case is too pressed close to the light in part 106 of this ccontaining groove 104, therefore when light emitting diode 203 is lighted, also easily produce the bright line problem.
Summary of the invention
The technical issues that need to address of the present invention have provided a kind of backlight module, are intended to address the above problem;
The present invention also provides the liquid crystal indicator that adopts above-mentioned backlight module.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions:
Backlight module of the present invention comprises: a LGP; Described LGP has a body, has a back side and one and back side facing surfaces on this body, the beam split groove that has a plurality of on this body, the ccontaining groove that has a plurality of on this back side, this ccontaining groove has one first light in part, at least one side of this first light in part is extended with one second light in part, and this beam split groove and this ccontaining groove are orthogonal surface region with body and are divided into a plurality of exiting surfaces are arranged;
One light source generator; Described light source generator has a circuit board and is electrically connected at the striation of the plural number row on this circuit board, and this light source generator is the back side that is disposed at this light conducting plate body, and this striation is arranged in this ccontaining groove;
Have a predetermined distance between this striation and this second light in part, this is apart from forming a mixed light space;
Liquid crystal indicator of the present invention comprises: a backlight module; Described backlight module comprises: a LGP; Described LGP has a body, has a back side and one and this back side facing surfaces on this body, the beam split groove that has a plurality of on this body, the ccontaining groove that has a plurality of on this back side, this ccontaining groove has one first light in part, at least one side of this first light in part is extended with one second light in part, and this beam split groove and this ccontaining groove are orthogonal surface region with body and are divided into a plurality of exiting surfaces are arranged; One light source generator; Described light source generator has a circuit board and is electrically connected at the striation of the plural number row on this circuit board, and this light source generator system is disposed at the back side of this light conducting plate body, and this striation is arranged in this ccontaining groove; Have into a predetermined distance between this striation and this second light in part, this is apart from forming a mixed light space; One liquid crystal display layer; Described liquid crystal display layer is disposed at the top of this backlight module.
Compared with prior art, the invention has the beneficial effects as follows: eliminate the bright spot generation on the backlight module and reach the zone and divide photocontrol, make the brightness of the LGP on the backlight module more even.
Description of drawings
Fig. 1 a, Fig. 1 b are traditional backlight module schematic side view;
Fig. 2 is the present invention's a backlight module decomposing schematic representation.
Fig. 3 is the combination stereoscopic schematic diagram of the present invention's backlight module.
Fig. 4 is the present invention's a backlight module schematic side view.
Fig. 5 A-5G is the ccontaining trench section schematic diagram of the present invention's LGP.
Fig. 6 is the present invention's a backlight module opticpath schematic diagram.
Fig. 7 is another embodiment schematic diagram of the present invention.
Fig. 8 is the combination cross-sectional schematic of Fig. 7.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is described in further detail:
The present invention's main purpose is to propose a kind of backlight module, produces with the bright spot of eliminating on the backlight module;
Another object of the present invention is to propose a kind of backlight module, divides photocontrol to reach the zone, makes the brightness of the LGP on the backlight module more even.
For reaching above-mentioned purpose, the invention provides a kind of backlight module, comprising:
One LGP, has a body, have a back side and a surface on this body, have a plurality of ccontaining grooves on this back side, this ccontaining groove has one first light in part, and at least one side of this first light in part is extended with one second light in part, has a plurality of beam split grooves on this surface, this beam split groove is with this ccontaining groove has a plurality of exiting surfaces vertical mutually surface region is divided into, and is provided with an optical layers on this first light in part;
One light source generator is the striation that has a circuit board and be electrically connected at the plural number row on this circuit board, this light source generator is to be disposed on the back side of this body, this striation is arranged in this ccontaining groove, have a reflecting layer on the circuit board surface between this striation and another striation, this reflecting layer is the light reflection for light emitting diode;
Wherein, have a predetermined distance between this striation and this second light in part, this can reduce the generation of bright line apart from forming a mixed light space.
See also second and third, four figure, be that the present invention's backlight module decomposes and combination stereoscopic and schematic side view.As shown in the figure: the present invention's backlight module 10 comprises: a LGP 1 and a light source generator 2.
This LGP 1 has a body 11 on it, have a back side 12 and a surface 13 on this body.The ccontaining groove 14 that has a plurality of on this back side 12, the section of this ccontaining groove 14 are trapezoidal.The beam split groove 15 that has a plurality of on this surface 13 or the back side 12, this beam split groove 15 is the vertical mutually corresponding exiting surface 16 of surface 13 being distinguished a plurality of zonules of formation with this ccontaining groove 14.In addition, in this ccontaining groove 14, be provided with one first light in part 141, these first light in part, 141 at least one sides be extended with one second light in part 142 or also can extend into simultaneously 2 second light in part 142 and 142 ', following examples explanations all is extended with 2 second light in part 142 and 142 ' with first light in part 141, but not with this as qualification.This first light in part 141 is provided with an optical layers 17, and this optical layers 17 is the reflector plate of tool light transmission, perhaps is the one of light diffusing sheet.Again, have plurality of through holes 18 on the body 11 of this LGP 1, this perforation 18 is passed for this supporting component (not shown).Please join the 5th figure A-G simultaneously, this ccontaining groove 14 except aforementioned section be trapezoidal, second light in part 142 and 142 of this ccontaining groove 14 ' with corresponding relation between this first light in part 141 is any of vertical, inclination, circular arc, rhombus, in addition, when this first light in part 141 extends for both sides, this second light in part 142 and 142 ' shape can the symmetry or asymmetric.In this was graphic, both can be mutual corresponding parallel or not parallel being built on this body 1 this back side 12 and this surface 13.
This light source generator 2 is the belows that are disposed at this LGP 1 body 11, have a circuit board 21 on it and be welded in the striation (LIGHT BAR) 22 of the plural number row (row) on this circuit board 21, this striation 22 is made up of plural 221 of light emitting diodes (LED), have a reflecting layer 23 on circuit board 21 surfaces between this striation 22 and another striation 22, this reflecting layer 23 is the light reflections for light emitting diode 221.When this light source generator 2 was disposed at the back side of this LGP 1 body 11, this striation 22 was arranged in this ccontaining groove 14, made 22 pairs of this striations should optical layers 17, and also was arranged in this ccontaining groove 14 adjacent to striation 22 other reflecting layer 23.In addition, on this circuit board 21, has plural through hole 24 for the supporting component (not shown).This circuit board 21 is rigid glass from the one of fiber printed circuit board (PCB) or soft diaphragm type printed circuit board (PCB) in this is graphic.
Seeing also the 4th, six figure, is the present invention's backlight module side-looking and opticpath schematic diagram.As shown in the figure: when the body 11 of this LGP 1 is assembled with light source generator 2, when this light source generator 2 is assembled with the body 11 of this LGP 1, the circuit board 21 of this light source generator 2 is disposed on the back side 12 of this body 11,22 of this striations are positioned at this ccontaining groove 14 and to the optical layers 17 on should first light in part 141, this light emitting diode 221 and this second light in part 142 and 142 ' between have a predetermined distance, this is apart from forming a mixed light space 20, and this mixed light space 20 can reduce the generation of bright line.
After finishing, can know that the striation 22 of seeing this light source generator 2 is arranged in this ccontaining groove 14.When every light emitting diode 221 is lighted, this light shines optical layers 17 and reflecting layer 23, can make evenly entering in the body 11 of this LGP 1 of light diffusion or atomizing, make the brightness of each exiting surface 16 on this body 11 even, this beam split groove 15 can stop light to be projected on another exiting surface 16 by exiting surface 16 simultaneously.
Seeing also the 7th figure, is another embodiment schematic diagram of the present invention.As shown in the figure:, more comprise: a base 31, a diaphragm 32, plural supporting component 33 and a framework 34 at this backlight module 10.
This base 31, its inner face have the platform 311 of a plural number projection, have the fixing hole 312 of plural number on the surface of this platform 311.
This diaphragm 32 is to be placed on the surface of this platform 311, has plural number on this diaphragm 32 to installing hole 321 that should fixing hole 312, and this backlight module 10 is to be disposed on the surface of this diaphragm 32.
This supporting component 33, has a support column 331 on it, have one first termination 332 and one second termination 333 on this support column 331, it is one coniform that this first termination 332 is, be bordering on these 332 places, first termination and have a compression part 334, and have a side on this second termination 333 and analyse and observe the top supporting part 335 that is arrowhead form; Pass the perforation 18 of LGP 1 and the through hole 24 of circuit board 21 at this supporting component 33, and the installing hole 321 of this diaphragm 32 and the fixing hole 312 of this platform 311, this compression part 334 presses on the surface on the surface 13 of this LGP 1,335 of this top supporting parts stay on the back side of this platform 311, and this backlight module 10 firmly is assembled on the platform 311 of base 31.
This framework 34 is made up of plural frame 341, and be positioned at the periphery of this backlight module 10, and on framework 34, dispose an optical module 342 that is positioned at backlight module 10 tops, this optical module 342 (as the 8th figure) includes from top to bottom at least: a reflecting type polarizing brightness enhancement film (Dual Brightness Enhancement Film, DBEF) 3421, one brightness enhancement film (Brightness Enhancement Film, BEF) 3422, one diffusion sheet (Diffuser) 3423 and a diffuser plate (Diffuser Plate) 3424.When framework 34 and this base 31 and backlight module 10 windings, these diffuser plate 3424 back sides press on first termination 332 of this supporting component 33.
See also the 8th figure.As shown in the figure: dispose a liquid crystal display layer 4 on the surface of this optical module 342, so that display frame to be provided, this backlight module 10 is so that this liquid crystal display layer 4 required light source when the display frame to be provided, to form a liquid crystal indicator.
Above-mentionedly only being the present invention's preferred embodiment, is not the scope that is used for limiting the invention process.Be that all equalizations of being done according to the present patent application claim change and modify, be all in the scope that claim of the present invention protects.
Claims (12)
1. a backlight module comprises: a LGP; Described LGP has a body; It is characterized in that: have a back side and one and back side facing surfaces on this body, the beam split groove that has a plurality of on this body, the ccontaining groove that has a plurality of on this back side, this ccontaining groove has one first light in part, at least one side of this first light in part is extended with one second light in part, and this beam split groove and this ccontaining groove are orthogonal surface region with body and are divided into a plurality of exiting surfaces are arranged;
One light source generator; Described light source generator has a circuit board and is electrically connected at the striation of the plural number row on this circuit board, and this light source generator is the back side that is disposed at this light conducting plate body, and this striation is arranged in this ccontaining groove;
Have a predetermined distance between this striation and this second light in part, this is apart from forming a mixed light space.
2. backlight module according to claim 1 is characterized in that: have the perforation of plural number on this body, the perforation of this plural number is corresponding to the through hole of plural number set on this circuit board.
3. backlight module according to claim 2 is characterized in that: this backlight module more includes: a base; Its inner face of described base has a platform, has the fixing hole of plural number on the surface of this platform;
One supporting component; Described supporting component passes this perforation, this through hole and this fixing hole, and backlight module fixedly is connected on this platform.
4. backlight module according to claim 3 is characterized in that: have more an optical module on this supporting component, this optical module includes: a reflecting type polarizing brightness enhancement film, a brightness enhancement film, a diffusion sheet and a diffuser plate.
5. backlight module according to claim 1 is characterized in that: this first light in part is provided with an optical layers, and this optical layers is the reflector plate of tool light transmission or the one of light diffusing sheet.
6. backlight module according to claim 1 is characterized in that: have a reflecting layer on this circuit board between this striation and another striation; This reflecting layer adjacent to these striation both sides is arranged in this ccontaining groove.
7. backlight module according to claim 1 is characterized in that: this beam split groove is arranged at one of the surface of this body or back side.
8. backlight module according to claim 4 is characterized in that: this striation is made up of plural light emitting diode.
9. a liquid crystal indicator comprises: a backlight module; It is characterized in that: described backlight module comprises: a LGP; Described LGP has a body, has a back side and one and this back side facing surfaces on this body, the beam split groove that has a plurality of on this body, the ccontaining groove that has a plurality of on this back side, this ccontaining groove has one first light in part, at least one side of this first light in part is extended with one second light in part, and this beam split groove and this ccontaining groove are orthogonal surface region with body and are divided into a plurality of exiting surfaces are arranged; One light source generator; Described light source generator has a circuit board and is electrically connected at the striation of the plural number row on this circuit board, and this light source generator system is disposed at the back side of this light conducting plate body, and this striation is arranged in this ccontaining groove; Have into a predetermined distance between this striation and this second light in part, this is apart from forming a mixed light space; One liquid crystal display layer; Described liquid crystal display layer is disposed at the top of this backlight module.
10. liquid crystal indicator according to claim 9 is characterized in that: this first light in part is provided with an optical layers, and this optical layers is the reflector plate of tool light transmission or the one of light diffusing sheet.
11. liquid crystal indicator according to claim 9 is characterized in that: this beam split groove is arranged at the one at the surface or the back side of this body.
12. liquid crystal indicator according to claim 9 is characterized in that: have a reflecting layer on this circuit board between this striation and another striation, be arranged in this ccontaining groove adjacent to this reflecting layer of this striation both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105416246A CN102062335A (en) | 2010-11-11 | 2010-11-11 | Backlight module and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105416246A CN102062335A (en) | 2010-11-11 | 2010-11-11 | Backlight module and liquid crystal display device |
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| Publication Number | Publication Date |
|---|---|
| CN102062335A true CN102062335A (en) | 2011-05-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105416246A Pending CN102062335A (en) | 2010-11-11 | 2010-11-11 | Backlight module and liquid crystal display device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102425744A (en) * | 2011-11-24 | 2012-04-25 | 创维液晶器件(深圳)有限公司 | Backlight module and liquid crystal display |
| CN102798078A (en) * | 2012-08-15 | 2012-11-28 | 冠捷显示科技（厦门）有限公司 | Diffuser plate and application thereof to jointed plate backlight module |
| CN103062712A (en) * | 2011-10-21 | 2013-04-24 | 财团法人工业技术研究院 | Light guide module |
| CN107399138A (en) * | 2017-07-05 | 2017-11-28 | 中航华东光电有限公司 | The optical film group of light and thin type |
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| CN101430072A (en) * | 2006-01-19 | 2009-05-13 | 清华大学 | Assembled uniform surface light source |
| CN201351836Y (en) * | 2009-01-24 | 2009-11-25 | 冠捷投资有限公司 | Vertically-down backlight module |
| CN201582735U (en) * | 2010-01-12 | 2010-09-15 | 苏州向隆塑胶有限公司 | Flat light-guide plate structure and backlight module using light-guide plate structure |
| CN201866647U (en) * | 2010-11-11 | 2011-06-15 | 上海向隆电子科技有限公司 | Backlight module and liquid crystal display device of same |
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2010
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101430072A (en) * | 2006-01-19 | 2009-05-13 | 清华大学 | Assembled uniform surface light source |
| CN101382698A (en) * | 2007-09-06 | 2009-03-11 | 富士迈半导体精密工业（上海）有限公司 | Backlight module unit |
| CN201351836Y (en) * | 2009-01-24 | 2009-11-25 | 冠捷投资有限公司 | Vertically-down backlight module |
| CN201582735U (en) * | 2010-01-12 | 2010-09-15 | 苏州向隆塑胶有限公司 | Flat light-guide plate structure and backlight module using light-guide plate structure |
| CN201866647U (en) * | 2010-11-11 | 2011-06-15 | 上海向隆电子科技有限公司 | Backlight module and liquid crystal display device of same |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103062712A (en) * | 2011-10-21 | 2013-04-24 | 财团法人工业技术研究院 | Light guide module |
| CN103062712B (en) * | 2011-10-21 | 2015-03-04 | 财团法人工业技术研究院 | Light guide module |
| CN102425744A (en) * | 2011-11-24 | 2012-04-25 | 创维液晶器件(深圳)有限公司 | Backlight module and liquid crystal display |
| CN102798078A (en) * | 2012-08-15 | 2012-11-28 | 冠捷显示科技（厦门）有限公司 | Diffuser plate and application thereof to jointed plate backlight module |
| CN102798078B (en) * | 2012-08-15 | 2014-03-19 | 冠捷显示科技（厦门）有限公司 | Diffuser plate and application thereof in jointed plate backlight module |
| CN107399138A (en) * | 2017-07-05 | 2017-11-28 | 中航华东光电有限公司 | The optical film group of light and thin type |
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Application publication date: 20110518 |