CN105333334A - LED light bar and liquid crystal display module - Google Patents
LED light bar and liquid crystal display module Download PDFInfo
- Publication number
- CN105333334A CN105333334A CN201510782873.7A CN201510782873A CN105333334A CN 105333334 A CN105333334 A CN 105333334A CN 201510782873 A CN201510782873 A CN 201510782873A CN 105333334 A CN105333334 A CN 105333334A
- Authority
- CN
- China
- Prior art keywords
- led
- lamp bar
- led lamp
- point light
- light source
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V7/00—Reflectors for light sources
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
Abstract
The invention provides an LED light bar and a liquid crystal display module. The LED light bar comprises a PCB and a plurality of LED point light sources; the plurality of LED point light sources are fixed in parallel on the PCB; a reflection block is arranged between two adjacent LED point light sources; reflecting surfaces are formed on sides, adjacent to the LED point light sources, of each reflection block. According to the LED light bar, the reflection block is arranged between the every two adjacent LED point light sources and the reflecting surfaces are formed on the sides, adjacent to the LED point light sources, of each reflection block, and in this way, after the light emitted by the LED point light sources is incident into the reflecting surfaces of the reflection blocks, light paths of the light will be changed so that the light on an incident side becomes quite uniform, i.e., light in non-luminous regions among the LED point light sources is quite uniform; as a result, the problem of a light leaking phenomenon caused by the non-luminous regions can be solved, and further, the edge brightness uniformity of a television can be improved; moreover, the display quality of a whole picture can be improved.
Description
Technical field
The present invention relates to technical field of liquid crystal display, particularly relate to a kind of LED lamp bar, this LED lamp bar can solve the light leakage phenomena that the non-luminous region owing to existing between LED point light source causes.The invention still further relates to a kind of liquid crystal display module with above-mentioned LED lamp bar.
Background technology
Light emitting diode (LightEmittingDiode is called for short LED) has the advantages such as volume is little, power consumption is low, long service life because of it and has been widely used, and has become the back light of the LCD TV of main flow.
Now, thinning whole set of television becomes the main flow of Polarizations for Target Discrimination in Clutter, and in order to make whole set of television lower thickness, side entrance back TV more and more comes into one's own.The back light of side entrance back TV adopts LED lamp strip structure usually, the structure of LED lamp bar common in prior art as shown in Figure 1, this LED lamp bar generally includes pcb board 1 and multiple spot light 2, and spot light 2 adopts LED point light source, and multiple LED point light source is fixed on pcb board 1 side by side.
Along with the lifting of side entrance back LED lamp bar technology, LED light effect and the lifting of liquid crystal panel glass penetrance, can reduce the LED quantity on the lamp bar of side entrance back and meet the demand of brightness equally, so can save LED quantity and carry out saving cost.But reduce the spacing that LED quantity can widen LED in LED lamp bar, owing to there is non-luminous region between LED and LED, the light leak of incident side can be caused, finally occur the phenomenon of the bright dark inequality of lamp bar, thus the edge brightness uniformity of TV can be caused to reduce, and then affect the quality of whole picture.
Therefore, how to solve in prior art due to the light leakage phenomena that the non-luminous region that LED lamp bar exists between LED point light source causes, become the difficult problem that those skilled in the art are urgently to be resolved hurrily.
Summary of the invention
The object of this invention is to provide a kind of LED lamp bar, this LED lamp bar can solve the light leakage phenomena that the non-luminous region owing to existing between adjacent LED spot light causes, and makes the edge brightness uniformity of TV higher, and then improves the display quality of whole picture.
In order to solve the problems of the technologies described above, the invention provides a kind of LED lamp bar, comprise pcb board, multiple LED point light source, described multiple LED point light source is fixed on pcb board side by side, be provided with reflex block between two adjacent LEDs spot light, the side that described reflex block is adjacent with described LED point light source forms reflecting surface.
Preferably, described LED point light source is wafer-level package LED.
Preferably, described wafer-level package LED comprises LED chip, and top and the side of described LED chip are all coated with fluorescent coating.
Preferably, described reflecting surface be concave curvatures, convex surface or be the plane of predetermined angle with described pcb board.
Preferably, the surface of described reflecting surface is provided with reflectance coating.
Preferably, described reflectance coating is silvered reflective layer or white paint layer.
Preferably, described reflex block is welded on the surface of described pcb board by pin, or described reflex block is fixed in the perforate of described pcb board.
Preferably, the height of described reflex block is higher than the height of described LED point light source.
Preferably, described reflex block is one or several in metallic reflection block, plastic reflective block or glass fibre reflex block.
LED lamp bar provided by the invention arranges reflex block between adjacent two LED point light source, the side that reflex block is adjacent with LED point light source is provided with reflecting surface, after the reflecting surface of the light directive reflex block that LED point light source is launched, light path will change, the light of incident side is made to become comparatively even, namely make the light of the non-luminous region between LED point light source comparatively even, thus the problem of the light leakage phenomena that non-luminous region causes can be solved, and then improve the edge brightness uniformity of TV, enter to improve the display quality of whole picture.
Present invention also offers a kind of liquid crystal display module, this liquid crystal display module comprises above-mentioned LED lamp bar, because above-mentioned LED lamp bar has above-mentioned technique effect, adopts the liquid crystal display module of this LED lamp bar also should have above-mentioned technique effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of typical LED lamp bar in prior art;
The structural representation of the LED lamp bar that Fig. 2 provides for an embodiment of the present invention;
Fig. 3 is the structural representation of LED lamp bar in the another kind of embodiment of the present invention;
Fig. 4 is the schematic diagram of a kind of structure of reflex block in LED lamp bar provided by the invention;
Fig. 5 is the schematic diagram of the another kind of structure of reflex block in LED lamp bar provided by the invention;
Fig. 6 is the structural representation of SMIS chip level packaged LED of the present invention;
Wherein, in Fig. 1-Fig. 6:
Pcb board 1, LED point light source 2, LED chip 21, fluorescent coating 22, reflex block 3, reflecting surface 31.
Detailed description of the invention
In order to make those skilled in the art person understand the present invention program better, below in conjunction with drawings and embodiments, the present invention is described in further detail.
Please refer to Fig. 2, the structural representation of the LED lamp bar that Fig. 2 provides for an embodiment of the present invention, as shown in Figure 2, LED lamp bar provided by the invention, comprise pcb board 1, multiple LED point light source 2, described multiple LED point light source 2 is fixed on pcb board 1 side by side, between two adjacent LEDs spot light 2, there is certain distance, reflex block 3 is provided with between two adjacent LEDs spot light 2, the side that described reflex block 3 is adjacent with described LED point light source 2 forms reflecting surface 31, in specific embodiment, the both sides of reflex block 3 are equipped with a reflecting surface 31, each reflecting surface 31 can reflect the light launched by adjacent LED spot light 2.
After the reflecting surface 31 of the light directive reflex block 3 that LED point light source 2 is launched, light path will change, the light of incident side is made to become comparatively even, namely make the light of the non-luminous region between LED point light source 2 comparatively even, thus the problem of the light leakage phenomena that non-luminous region causes can be solved, and then improve the edge brightness uniformity of TV, enter to improve the display quality of whole picture.
In this embodiment; the reflecting surface 31 of reflex block 3 is plane; between this plane and pcb board 1, there is default angle; it is trapezoidal that the shape in this reflex block 3 cross section can adopt as shown in Figure 2, can as required, arrange arbitrarily two reflectings surface 31 and angle between pcb board 1; certainly; as shown in Figure 4, reflex block 3 cross sectional shape also can adopt triangle, all should in protection scope of the present invention.
In the scheme substituted, the reflecting surface 31 of reflex block 3 also can adopt curved surface or irregularly shaped, and as shown in Figure 3, shown reflecting surface 31 adopts concave curvatures, and the both sides of this reflex block 3 all can adopt concave curvatures as reflecting surface 31.
As shown in Figure 5, shown reflecting surface 31 adopts the shape of convex surface, and the cross sectional shape of reflex block 3 can be arc or semicircle.
Be appreciated that those skilled in the art are under design of the present invention, the shape of the both sides reflecting surface 31 of reflex block 3 can be combined, all should in protection scope of the present invention.
In preferred scheme, in order to improve the light reflection effect of reflecting surface 31, can be provided with reflectance coating on the surface of described reflecting surface 31, to increase the dispersion effect of reflex block 3, described reflectance coating can adopt silvered reflective layer or white paint layer etc.
In concrete scheme, described reflex block 3 is welded on the surface of described pcb board 1 by pin, or described reflex block 3 is fixed in the perforate of described pcb board 1.
In concrete scheme, described reflex block 3 is one or several in metallic reflection block 3, plastic reflective block 3 or glass fibre reflex block 3, all should in protection scope of the present invention.
In preferred scheme, the height of described reflex block 3, higher than the height of described LED point light source 2, can be canceled the block on traditional LED lamp bar like this, simplify the structure of LED lamp bar, reduce into product cost.
In preferred scheme, described LED point light source 2 is wafer-level package LED, and as shown in Figure 6, in concrete scheme, described wafer-level package LED comprises LED chip 21, and the top of described LED chip and side are all coated with fluorescent coating 22.
Wafer-level package LED is because fluorescent material is coated in the outside of LED chip 21, can outside normal luminous directly over LED chip, side surrounding also can be luminous, lighting angle is larger, lighting angle can reach about 160 ° (and the lighting angle of traditional LED point light source 2 is about 120 °), can have on the reflecting surface 31 of more light directive reflex blocks 3 and carry out scattering, the light of the non-luminous region between LED point light source 2 can be made further more even, solve the problem of the light leakage phenomena that non-luminous region causes better.
Present invention also offers a kind of liquid crystal display module, this liquid crystal display module comprises above-mentioned LED lamp bar, because above-mentioned LED lamp bar has above-mentioned technique effect, adopts the liquid crystal display module of this LED lamp bar also should have above-mentioned technique effect, does not repeat them here.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. a LED lamp bar, comprise pcb board, multiple LED point light source, described multiple LED point light source is fixed on pcb board side by side, it is characterized in that, be provided with reflex block between two adjacent LEDs spot light, the side that described reflex block is adjacent with described LED point light source forms reflecting surface.
2. LED lamp bar according to claim 1, is characterized in that, described LED point light source is wafer-level package LED.
3. LED lamp bar according to claim 2, is characterized in that, described wafer-level package LED comprises LED chip, and top and the side of described LED chip are all coated with fluorescent coating.
4. LED lamp bar according to claim 1, is characterized in that, described reflecting surface is concave curvatures, convex surface or be the plane of predetermined angle with described pcb board.
5. LED lamp bar according to claim 1, is characterized in that, the surface of described reflecting surface is provided with reflectance coating.
6. LED lamp bar according to claim 5, is characterized in that, described reflectance coating is silvered reflective layer or white paint layer.
7. LED lamp bar according to claim 1, is characterized in that, described reflex block is welded on the surface of described pcb board by pin, or described reflex block is fixed in the perforate of described pcb board.
8. LED lamp bar according to claim 1, is characterized in that, the height of described reflex block is higher than the height of described LED point light source.
9. LED lamp bar according to claim 1, is characterized in that, described reflex block is one or several in metallic reflection block, plastic reflective block or glass fibre reflex block.
10. a liquid crystal display module, is characterized in that, comprises the LED lamp bar described in any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510782873.7A CN105333334A (en) | 2015-11-16 | 2015-11-16 | LED light bar and liquid crystal display module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510782873.7A CN105333334A (en) | 2015-11-16 | 2015-11-16 | LED light bar and liquid crystal display module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105333334A true CN105333334A (en) | 2016-02-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510782873.7A Pending CN105333334A (en) | 2015-11-16 | 2015-11-16 | LED light bar and liquid crystal display module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105333334A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105759499A (en) * | 2016-03-10 | 2016-07-13 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN107919074A (en) * | 2017-12-05 | 2018-04-17 | 浙江华上电子科技有限公司 | A kind of advertising lamp box for including diffusing reflection device |
| CN108019625A (en) * | 2018-01-12 | 2018-05-11 | 安徽芯瑞达科技股份有限公司 | A kind of down straight aphototropism mode set matrix light source |
| CN108511586A (en) * | 2018-02-09 | 2018-09-07 | 中山市立体光电科技有限公司 | A kind of LED light bar |
| WO2020047913A1 (en) * | 2018-09-06 | 2020-03-12 | 武汉华星光电技术有限公司 | Light-emitting diode, and backlight module using light-emitting diode |
| CN111308788A (en) * | 2020-04-23 | 2020-06-19 | 深圳市汇凌信息技术有限公司 | Liquid crystal display panel |
| EP3312881B1 (en) | 2016-10-19 | 2022-06-15 | Tridonic GmbH & Co. KG | Csp led module with reflection agent |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101603660A (en) * | 2009-07-28 | 2009-12-16 | 中国兵器工业计算机应用技术研究所 | A kind of backlight module |
| JP2011003488A (en) * | 2009-06-22 | 2011-01-06 | Panasonic Corp | Surface light source and liquid crystal display |
| CN102588841A (en) * | 2012-02-21 | 2012-07-18 | 南京汇兴博业数字设备有限公司 | Direct type liquid crystal backlight module with adaptive-temperature and high-brightness LEDs (light-emitting diode) |
| CN103453390A (en) * | 2012-06-04 | 2013-12-18 | Tcl光电科技(惠州)有限公司 | LCD TV (Liquid Crystal Display Television), backlight module and manufacturing method thereof |
-
2015
- 2015-11-16 CN CN201510782873.7A patent/CN105333334A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011003488A (en) * | 2009-06-22 | 2011-01-06 | Panasonic Corp | Surface light source and liquid crystal display |
| CN101603660A (en) * | 2009-07-28 | 2009-12-16 | 中国兵器工业计算机应用技术研究所 | A kind of backlight module |
| CN102588841A (en) * | 2012-02-21 | 2012-07-18 | 南京汇兴博业数字设备有限公司 | Direct type liquid crystal backlight module with adaptive-temperature and high-brightness LEDs (light-emitting diode) |
| CN103453390A (en) * | 2012-06-04 | 2013-12-18 | Tcl光电科技(惠州)有限公司 | LCD TV (Liquid Crystal Display Television), backlight module and manufacturing method thereof |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105759499A (en) * | 2016-03-10 | 2016-07-13 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
| US9964802B2 (en) | 2016-03-10 | 2018-05-08 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Backlight modules and liquid crystal devices |
| EP3312881B1 (en) | 2016-10-19 | 2022-06-15 | Tridonic GmbH & Co. KG | Csp led module with reflection agent |
| CN107919074A (en) * | 2017-12-05 | 2018-04-17 | 浙江华上电子科技有限公司 | A kind of advertising lamp box for including diffusing reflection device |
| CN108019625A (en) * | 2018-01-12 | 2018-05-11 | 安徽芯瑞达科技股份有限公司 | A kind of down straight aphototropism mode set matrix light source |
| CN108511586A (en) * | 2018-02-09 | 2018-09-07 | 中山市立体光电科技有限公司 | A kind of LED light bar |
| CN108511586B (en) * | 2018-02-09 | 2023-12-05 | 中山市木林森电子有限公司 | LED lamp strip |
| WO2020047913A1 (en) * | 2018-09-06 | 2020-03-12 | 武汉华星光电技术有限公司 | Light-emitting diode, and backlight module using light-emitting diode |
| US11300724B2 (en) * | 2018-09-06 | 2022-04-12 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Light emitting diode and backlight module using same |
| CN111308788A (en) * | 2020-04-23 | 2020-06-19 | 深圳市汇凌信息技术有限公司 | Liquid crystal display panel |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20160217 |