CN205101879U - Backlight module group - Google Patents
Backlight module group Download PDFInfo
- Publication number
- CN205101879U CN205101879U CN201520895536.4U CN201520895536U CN205101879U CN 205101879 U CN205101879 U CN 205101879U CN 201520895536 U CN201520895536 U CN 201520895536U CN 205101879 U CN205101879 U CN 205101879U
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- CN
- China
- Prior art keywords
- reflector plate
- backlight module
- light guide
- circuit board
- printed circuit
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a display technique, the utility model discloses a backlight module group, it includes the light guide plate, the flexble printed circuit board, LED lamp and first reflector plate, a plurality of LED lamps side by side and the interval locate the upper surface of flexble printed circuit board, the upper surface of LED lamp and the marginal facies of light guide plate are to setting up, the LED lamp is being equipped with first reflector plate respectively with a plurality of LED lamp array orientation vertically both sides, the one end of first reflector plate is connected to the light guide plate, the other end of first reflector plate is connected to the flexble printed circuit board. The utility model discloses on locating the flexble printed circuit board with the LED lamp, the bending of LED lamp strip can be realized, can backlight module group be set to the arc structure from this for backlight module group's structure is unrestricted, and the flexble printed circuit board has toughness, and its thickness can the attenuate, can realize backlight module group's narrow frame from this, simultaneously, has set up the reflector plate in the both sides of LED lamp, has improved backlight module group's luminance.
Description
Technical field
The utility model relates to Display Technique, particularly relates to a kind of backlight module.
Background technology
Side-light backlight module is widely used in the fields such as mobile phone, wrist-watch, TV, computer.Existing LED adopts ceramic package encapsulation, and ceramic package packaged LED forms independently LED unit, then LED unit is arranged in the edge correct position of light guide plate.
The LED of ceramic package encapsulation is adopted to have following defect: if 1 ceramic package is thinner, easily embrittlement, therefore inevitably need to adopt thicker ceramic package, thereby increase the thickness of LED, and then add the thickness of frame and the width of backlight module, the width of general ceramic package is 600 μm ~ 800 μm, is highly 1-1.5mm; 2, the LED encapsulating structure 200 of ceramic package is comparatively hard, is installed on light guide plate 100, can not bends, can not form the arcuate structure such as circle, ellipse, as shown in Figure 1, can not form bending light source, thus limit the design of backlight module product structure.
Utility model content
The technical problems to be solved in the utility model is existing backlight module causes product structure restriction because LED encapsulating structure can not be bent to form arcuate structure more firmly, solves the problem causing the frame of backlight module wider because LED encapsulating structure is thicker simultaneously.
In order to solve the problems of the technologies described above, the utility model provides a kind of backlight module, it comprises light guide plate, flexible printed circuit board, LED and the first reflector plate, multiple described LED side by side and the upper surface of described flexible printed circuit board is located at interval, the upper surface of described LED and the edge of described light guide plate are oppositely arranged, described LED is respectively equipped with the first reflector plate in the both sides vertical with multiple described LED orientation, one end of described first reflector plate is connected to described light guide plate, and the other end of described first reflector plate is connected to described flexible printed circuit board.
Preferably, the outside of described first reflector plate is provided with anti-dazzling screen, and one end of coated described first reflector plate in one end of described anti-dazzling screen is also connected to described light guide plate, and the other end of described anti-dazzling screen is connected to described flexible printed circuit board.
Preferably, described LED is located at the regional area at the edge of described light guide plate, and the remaining area at the edge of described light guide plate is provided with the second reflector plate.
Preferably, described light guide plate is square structure or arcuate structure.
Preferably, described first reflector plate is SFP or ESR reflector plate.
Preferably, described second reflector plate is SFP or ESR reflector plate.
A kind of backlight module provided by the utility model, be specially adapted to mobile phone screen, eyes and wrist-watch etc., LED be located on flexible printed circuit board, the bending of LED lamp bar can be realized, backlight module can be arranged to arcuate structure thus, make the structure of backlight module unrestricted, flexible printed circuit board has toughness, and its thickness can be thinning, the narrow frame of backlight module can be realized thus, meanwhile, be provided with reflector plate in the both sides of LED, improve the brightness of backlight module.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing backlight module;
Fig. 2 is the structural representation of the utility model embodiment backlight module;
Fig. 3 be in Fig. 2 A-A to sectional view;
Fig. 4 is the schematic diagram blocking the clear zone between light guide plate and the first reflector plate of the utility model embodiment backlight module;
Fig. 5 is the distribution schematic diagram of the utility model embodiment lamp bar and the second reflector plate.
Wherein, 100, light guide plate; 200, LED encapsulating structure;
1, light guide plate; 2, flexible printed circuit board; 3, LED; 4, the first reflector plate; 5, shell; 6, diffusion sheet; 7, upper prism; 8, lower prism; 9, light-shielding strip; 10, the 3rd reflector plate; 11, anti-dazzling screen; 12, the second reflector plate; 13, electrode; 14, lamp bar; 15, clear zone.
Detailed description of the invention
Below in conjunction with drawings and Examples, detailed description of the invention of the present utility model is described in further detail.Following examples for illustration of the utility model, but are not used for limiting scope of the present utility model.
In description of the present utility model, it should be noted that, term " on ", D score, " interior ", the orientation of the instruction such as " outward " or position relationship be based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance.
As shown in Figures 2 and 3, a kind of backlight module of the utility model preferred embodiment, it comprises light guide plate 1, flexible printed circuit board 2 (FPCB, FlexiblePrintedCircuitBoard), LED 3 and the first reflector plate 4, the upper surface of flexible printed circuit board 2 side by side and be arranged at intervals with multiple LED 3, multiple LED 3 is integrated on flexible printed circuit board 2 and is formed as lamp bar 14, LED 3 is respectively equipped with the first reflector plate 4 in the both sides vertical with the orientation of multiple LED 3, one end of first reflector plate 4 is connected to light guide plate 1, the other end of the first reflector plate 4 is connected to flexible printed circuit board 2.The backlight module of the present embodiment also comprises for supporting fixing shell 5, being located at the diffusion sheet 6 in light guide plate 1 front, upper prism 7 and lower prism 8, and at the light-shielding strip 9 that the edge in light guide plate 1 front is arranged, and be located at the 3rd reflector plate 10 at light guide plate 1 back side, the region that covers by light-shielding strip 9 be non-display area, be formed as the frame of backlight module, not by formation viewing area, region that light-shielding strip 9 covers, the interface of flexible printed circuit board 2 is also provided with electrode 13, these belong to prior art, do not repeat at this.
The utility model adopts flexible printed circuit board 2 to carry LED 3, the LED lamp bar after encapsulating is made to have flexibility, can bend, arcuate structure or square structure can be formed, make the structure of backlight module unrestricted, and flexible printed circuit board 2 have toughness, not easily embrittlement, its thickness can be thinning, can realize the narrow frame of backlight module; Simultaneously, the first reflector plate 4 is provided with in the both sides of LED 3, its reflecting rate is higher, improve the brightness of backlight module, multiple LED 3 should be placed between two piece of first reflector plate 4, and when LED 3 being assembled with light guide plate 1, one end of the first reflector plate 4 is connected to the surface of light guide plate 1, and the other end of the first reflector plate 4 is connected to flexible printed circuit board 2.
As shown in Figure 4, facts have proved, first reflector plate 4 easily forms clear zone 15 with the junction of light guide plate 1, in order to avoid clear zone 15 light leak, the outside of the first reflector plate 4 is provided with anti-dazzling screen 11, one end (this end is one end that the first reflector plate 4 is connected to light guide plate 1) of coated first reflector plate 4 in one end of anti-dazzling screen 11 and be connected to light guide plate 1, the other end of anti-dazzling screen 11 is connected to flexible printed circuit board 2, clear zone 15 can be covered thus, and then avoid clear zone 15 light leak of the first reflector plate 4 and light guide plate 1 junction, thereby enhance the brightness of backlight module.Anti-dazzling screen 11 can be black glue or black and white glue, and preferably, in the present embodiment, anti-dazzling screen 11 is black and white glue, can improve shaded effect thus.
The Zone Full that lamp bar 14 can be located at light guide plate 1 edge also can be located at the regional area of light guide plate 1, as shown in Figure 5, when lamp bar 14 is located at the regional area at light guide plate 1 edge, the remaining area at the edge of light guide plate 1 is provided with the second reflector plate 12, compared to the backlight module not arranging the second reflector plate 12 at the edge of light guide plate 1, backlight module of the present utility model arranges the uniformity that the second reflector plate 12 can improve the brightness of backlight module fringe region.
First reflector plate 4 can be SFP (full name: SpecularFilmProtected) or ESR (full name: EnhancedSpecularReflector) reflector plate, SFP, ESR reflector plate is a kind of sheet emitting of ultra-high reflectivity, the reflectivity that the reflectivity of SFP reflector plate can reach 98.5%, ESR reflector plate can reach 96%.Second reflector plate 12 preferably adopts SFP or ESR reflector plate, can improve the brightness of backlight module fringe region thus as much as possible.
The surface of LED 3 is provided with layer of silica gel, and complete for LED 3 wrapping and encapsulating is got up by layer of silica gel and flexible printed circuit board 2.Fluorescent material is mixed with or layer of silica gel is provided with fluorescence coating in layer of silica gel, arranging fluorescence coating is color in order to change the light that LED 3 finally sends, LED 3 as blue light runs into the fluorescence coating that is mixed with yellow fluorescent powder or layer of silica gel can become white light, this technology known by industry those skilled in the art.The upper surface of flexible printed circuit board 2 is provided with silver layer, and silver layer can strengthen the reflectivity of flexible printed circuit board 2, improves the brightness of LED 3, and has good electric conductivity.
The width of flexible printed circuit board 2 is 300 μm ~ 600 μm, and the thickness of flexible printed circuit board 2 is 100 μm ~ 300 μm; The height of the first reflector plate 4 is 250 μm ~ 500 μm, and the thickness of the first reflector plate 4 is 50 μm ~ 80 μm.Compared to the backlight module adopting ceramic package LED encapsulation structure, integral thickness and the width of backlight module of the present utility model are all improved, and can realize narrow frame.The electrode 13 be arranged on flexible printed circuit board 2 can adopt the mode of serial or parallel connection.
To sum up, backlight module of the present utility model, flexible printed circuit board 2 and the first reflector plate 4 is adopted to carry out packaged LED lamp 3, make LED 3 have flexibility, can bend, the arcuate structure such as circle, ellipse can be formed, make the shape of backlight module unrestricted, the shape of backlight module can be set to the arcuate structure such as circle, ellipse thus, equally also can be arranged to square structure, and achieve the narrow frame of backlight module; The reflecting rate of the first reflector plate 4 is higher, improves the brightness of LED 3.
The above is only preferred embodiment of the present utility model; should be understood that; for those skilled in the art; under the prerequisite not departing from the utility model know-why; can also make some improvement and replacement, these improve and replace and also should be considered as protection domain of the present utility model.
Claims (6)
1. a backlight module, it is characterized in that, comprise light guide plate, flexible printed circuit board, LED and the first reflector plate, multiple described LED side by side and the upper surface of described flexible printed circuit board is located at interval, the upper surface of described LED and the edge of described light guide plate are oppositely arranged, described LED is respectively equipped with the first reflector plate in the both sides vertical with multiple described LED orientation, one end of described first reflector plate is connected to described light guide plate, and the other end of described first reflector plate is connected to described flexible printed circuit board.
2. backlight module as claimed in claim 1, it is characterized in that, the outside of described first reflector plate is provided with anti-dazzling screen, and one end of coated described first reflector plate in one end of described anti-dazzling screen is also connected to described light guide plate, and the other end of described anti-dazzling screen is connected to described flexible printed circuit board.
3. backlight module as claimed in claim 1 or 2, it is characterized in that, described LED is located at the regional area at the edge of described light guide plate, and the remaining area at the edge of described light guide plate is provided with the second reflector plate.
4. backlight module as claimed in claim 1 or 2, it is characterized in that, described light guide plate is square structure or arcuate structure.
5. backlight module as claimed in claim 1 or 2, it is characterized in that, described first reflector plate is SFP or ESR reflector plate.
6. backlight module as claimed in claim 3, it is characterized in that, described second reflector plate is SFP or ESR reflector plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520895536.4U CN205101879U (en) | 2015-11-11 | 2015-11-11 | Backlight module group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520895536.4U CN205101879U (en) | 2015-11-11 | 2015-11-11 | Backlight module group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205101879U true CN205101879U (en) | 2016-03-23 |
Family
ID=55517660
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520895536.4U Expired - Fee Related CN205101879U (en) | 2015-11-11 | 2015-11-11 | Backlight module group |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205101879U (en) |
-
2015
- 2015-11-11 CN CN201520895536.4U patent/CN205101879U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160323 Termination date: 20171111 |