CN103104865B - Backlight module with reflecting layer and display device thereof - Google Patents
Backlight module with reflecting layer and display device thereof Download PDFInfo
- Publication number
- CN103104865B CN103104865B CN201210535159.4A CN201210535159A CN103104865B CN 103104865 B CN103104865 B CN 103104865B CN 201210535159 A CN201210535159 A CN 201210535159A CN 103104865 B CN103104865 B CN 103104865B
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- reflecting layer
- backlight module
- outer portion
- guide plate
- light guide
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- 238000000576 coating method Methods 0.000 claims description 20
- 239000011248 coating agent Substances 0.000 claims description 19
- 238000001579 optical reflectometry Methods 0.000 claims description 14
- 239000002390 adhesive tape Substances 0.000 claims description 10
- 230000000994 depressogenic effect Effects 0.000 claims description 7
- 238000002834 transmittance Methods 0.000 claims description 7
- 238000004026 adhesive bonding Methods 0.000 claims 1
- 230000008093 supporting effect Effects 0.000 abstract description 4
- 230000003287 optical effect Effects 0.000 abstract description 3
- 239000010410 layer Substances 0.000 abstract 6
- 239000011229 interlayer Substances 0.000 abstract 2
- 239000002131 composite material Substances 0.000 abstract 1
- 208000034699 Vitreous floaters Diseases 0.000 description 12
- 230000000694 effects Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 2
- 230000011514 reflex Effects 0.000 description 2
- 240000001439 Opuntia Species 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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- Planar Illumination Modules (AREA)
Abstract
The invention discloses a backlight module with a reflecting layer and a display device thereof. The back plate is arranged at the bottom of the display device and covers the display device from the outer side. In addition, the back plate is provided with an outer ring part parallel to the bottom surface of the light guide plate and an inner ring part extending from the outer ring part towards the center direction of the light guide plate, and the outer ring part supports the edge of the bottom surface of the light guide plate. The outer ring part supports a part of the light guide plate, and an interlayer space is arranged between the inner ring part and the bottom surface. The interlayer space is filled with a reflective layer. The reflecting layer is arranged on one surface of the inner ring part facing the bottom surface of the light guide plate and supports the light guide plate. The backlight module with the reflecting layer and the display device thereof provided by the invention have the advantages that the composite reflecting layer is arranged in the backlight module, the optical performances of the backlight module and the display device are improved, and meanwhile, the reflecting layer is used for supporting the light guide plate, so that the structural supporting effect is improved.
Description
Technical field
The invention relates to a kind of backlight module and comprise its display unit; Specifically, the invention relates to and a kind ofly there is the backlight module in reflecting layer and comprise its display unit.
Background technology
Portable electronic devices, as notebook computer, mobile phone, panel computer etc., has been widely used in daily life.Along with technical development, the size of portable electronic devices must meet light, thin, short, little characteristic, just can reach portable object.But, because the process of size thinning produce change spatially, except portion of element need be sacrificed with the situation reduced in response to the space held, also face the challenge in display effect and Stability Analysis of Structures simultaneously.
Figure 1A and Figure 1B is the schematic diagram of conventional display device.As shown in Figure 1A, the backboard 32 of conventional display device 10 is around outside and in a hollow design, and the part that backboard 32 extends to center is compared Outboard Sections and had a difference in height.Refer to Figure 1B, as shown in Figure 1B, conventional display device 10 mainly comprises display floater 20 and backlight module 30 to the sectional view of conventional display device 10.With the assembling mode of current display unit, depressed part 33 must be reserved fit for locating adhesive tape 40 bottom backboard 32.But, such design can cause backboard 32 to have difference of height towards the one side of light guide plate 31, as shown in Figure 1B, namely the position of mezzanine space 34 is the space (part that corresponding Figure 1A backboard 32 extends to center) produced after depressed part 33 is shaped, thus, the light-out effect of the viewing area B of corresponding clip sheaf space 34 is just affected.In addition, the reflectance coating 35 of thinning can cause light transmittance to rise, and thus reduces the reflecting effect of reflectance coating 35, adds the problem of aforementioned structure, make the brightness at B edge, viewing area obviously dimmed, also reduce the purchase intention of consumer.
Summary of the invention
An object of the present invention arranges combined type reflecting layer in backlight module, to improve the optical appearance of backlight module and display unit.
Another object of the present invention supports light guide plate, to improve support structure effect with reflecting layer.
Backlight module comprises light guide plate, backboard and reflecting layer.Backboard is that part arranges corresponding to bottom surface of light guide plate; In addition, backboard has the outer portion being parallel to bottom surface of light guide plate and the internal ring portion extended towards light guide plate center position from outer portion, and supports the edge of bottom surface of light guide plate with outer portion.Outer portion supports the light guide plate of a part, and accompanies a mezzanine space between internal ring portion and bottom surface.Reflecting layer is set in mezzanine space and in the one side of bottom surface of light guide plate, is filled to the mezzanine space of small part in internal ring portion.
Display unit, except backlight module, also comprises display floater and is arranged on backlight module, such as a side position of light guide plate bottom surface dorsad.By the setting in reflecting layer, the viewing area edge optical performance of display floater can be made to promote, increase the uniformity of brightness.
Describe the present invention below in conjunction with the drawings and specific embodiments, but not as a limitation of the invention.
Accompanying drawing explanation
Figure 1A and Figure 1B is the schematic diagram of existing display unit;
Fig. 2 A is the embodiment schematic diagram of display unit of the present invention;
Fig. 2 B is backboard of the present invention and reflecting layer position relationship schematic diagram;
Fig. 3 is another embodiment schematic diagram of display unit of the present invention;
Fig. 4 is another embodiment schematic diagram of display unit of the present invention.
Wherein, Reference numeral
100 display unit
200 display floaters
The outer surface of 202 display floaters
300 backlight modules
310 light guide plates
312 bottom surfaces
314 micro-structurals
320 backboards
321 depressed parts
322 outer portion
The outer surface of 323 outer portion
324 internal ring portions
326 sidewalls
330 mezzanine spaces
340 reflecting layer
342 end faces
350 reflectance coatings
400 locating adhesive tapes
B viewing area
C hollow region
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, technical solution of the present invention is described in detail, further to understand object of the present invention, scheme and effect, but not as the restriction of claims protection domain of the present invention.
The invention provides a kind of backlight module and comprise its display unit.The better light-source structure comprising side-light type of backlight module; But in different embodiments, the light-source structure of straight-down negative also can be comprised.Display unit is preferably liquid crystal display; But in different embodiments, also can be the display that other use backlight module.
Fig. 2 A is the embodiment schematic diagram of display unit 100 of the present invention.As shown in Figure 2 A, display unit 100 has display floater 200 and backlight module 300.Backlight module 300 mainly contains light guide plate 310, backboard 320 and reflecting layer 340.Backboard 320 is arranged at bottom display unit 100, and from outside coated display unit 100.In addition, backboard 320 has the outer portion 322 being parallel to light guide plate 310 bottom surface and the internal ring portion 324 extended towards light guide plate 310 center position from outer portion 322, and supports the edge of light guide plate 310 bottom surface 312 with outer portion 322.In the preferred embodiment, backboard 320 is made up of metal sheet, and internal ring portion 324 can produce by impact style; So in different embodiments, backboard 320 also can be other different materials, or uses the different modes such as ejection formation to make.As shown in Figure 2 A, outer portion 322 supports the part of the light guide plate 310, particularly edge of a part; And between internal ring portion 324 and bottom surface 312, accompany a mezzanine space 330.Reflecting layer 340 is filled with at least partly in mezzanine space 330; In the embodiment shown in Fig. 2 A, reflecting layer 340 is arranged at internal ring portion 324 in the one side of light guide plate 310 bottom surface 312 to fill up mezzanine space 330, supports light guide plate 310 simultaneously.
In addition, display floater 200 is arranged at the side of light guide plate 310 bottom surface 312 dorsad, and namely display floater 200 and outer portion 322 are the relative both sides being arranged on light guide plate 310.The B edge, viewing area of display floater 200 is positions of corresponding internal ring portion 324, and in detail, the drop shadow spread of internal ring portion 324 on display floater 200 is the edge being positioned at viewing area B.Viewing area B toward the not corresponding backboard 320 of part of light guide plate 310 center position, or perhaps corresponds to the hollow region C of backboard 320.Please also refer to Fig. 2 B.Fig. 2 B is backboard 320 of the present invention and reflecting layer 340 position relationship schematic diagram.As shown in Figure 2 B, the AA ' direction along Fig. 2 B can obtain the sectional view shown in Fig. 2 A.Backboard 320 is positioned at reflecting layer 340 outside display unit 100 and is positioned at inside display unit 100 and covers internal ring portion (not shown), and internal ring portion and reflecting layer 340 are all around hollow region C.
In the preferred embodiment, the bottom surface 312 of light guide plate 310 is formed with multiple micro-structural 314, and better micro-structural 314 distribution density being greater than internal ring portion 324 drop shadow spread on bottom surface 312 of micro-structural 314 distribution density of hollow region C drop shadow spread on bottom surface 312.As shown in Figure 2 A, the part of the corresponding internal ring portion 324 in light guide plate 310 bottom surface 312, the density that its micro-structural 314 is arranged is thinner; The part of the corresponding hollow region C in light guide plate 310 bottom surface 312, the density that its micro-structural 314 is arranged is closeer.In other words, micro-structural 314 arranges the region of comparatively dredging and goodly to distribute in the form of a ring.Set-up mode by this, can improve the amount of light of hollow region C and make display unit 100 can possess lighter weight, and mutually can arrange in pairs or groups with the setting in reflecting layer 340 or material, to obtain the most uniform light-out effect.
As shown in Figure 2 A, backboard 320 comprises the sidewall 326 be connected with outer portion 322, and namely sidewall 326 connects outer portion 322 tossing about and surrounding the outside of display unit 100 relative to internal ring portion 324.The outer surface of sidewall 326 posts locating adhesive tape 400.As shown in Figure 2 A, the both sides of locating adhesive tape 400 protrude from sidewall 326 respectively, and one lateral buckling connects the surface in contrast to backlight module 300, i.e. the outer surface 202 of display floater, and opposite side then bends the outer surface 323 connecting outer portion.As shown in Figure 2 A, the section of locating adhesive tape 400 presents display floater 200 outer ledge as coated in C font, the sidewall 326 of backboard 320 and the outer surface 323 of outer portion 322.The outer surface of internal ring portion 324 protrudes from the inner surface of outer portion 322 to form depressed part 321 outside outer portion 322, the part making locating adhesive tape 400 connect outer portion 322 outer surface can be contained in depressed part 321, therefore locating adhesive tape 400 is fitted and can be kept the planarization of display unit 100 after bottom backboard 320, with ease of assembly.
In addition, light guide plate 310 also has reflectance coating 350 on bottom surface 312, and outer portion 322 supporting reflex film 350 is indirectly to support bottom surface 312.As shown in Figure 2 A, reflecting layer 340 end face 342 be positioned between reflectance coating 350 and internal ring portion 324 flushes with the surface that outer portion 322 supports light guide plate 310 bottom surface 312.Thus, reflecting layer 340 can support light guide plate 310, to improve the stability of structure indirectly by supporting reflex film 350.In this embodiment, the light reflectivity in reflecting layer 340 is identical with the light reflectivity on outer portion 322 surface.On the other hand, for the situation avoiding the reflectance coating after thinning 350 to cause reflecting effect not good, the better employing of light reflectivity in reflecting layer 340 is greater than the light reflectivity of reflectance coating 350, and/or the light transmittance in reflecting layer 340 is less than the light transmittance of reflectance coating 350, therefore, can be reflected by reflecting layer 340 again by the light of reflectance coating 350, to improve light extraction efficiency.Meanwhile, set-up mode by this, viewing area B edge, the i.e. drop shadow spread of corresponding internal ring portion 324, its brightness can promote to avoid producing blanking bar.
In other embodiments, the light-out effect improving viewing area B edge also can coordinate the adjustment of micro-structural 314 density to reach by adopting the reflecting layer 340 with high reflectance simultaneously.Another embodiment of display unit 100 as shown in Figure 3.The elasticity can saved reflectance coating 350 further and use to increase space can be noticed in display unit 100 in figure 3.In this embodiment, micro-structural 314 in light guide plate 310 is evenly distributed, what such as Fig. 3 adopted is the mode that micro-structural 314 is all adjusted to closeer, then arrange in mezzanine space and there is the reflecting layer 340 of high reflectance, coordinate by reflecting layer 340 and micro-structural 314 light-out effect adjusting viewing area B edge.Therefore, reflecting layer 340 not only can increase support structure, also can improve light-out effect, on the other hand, the adjustment of the reflecting layer 340 with high reflectance and the micro-structural 314 distribution density also reflectance coating 350 of removable or whole, and then increase the inner exercisable space of display unit 100.
Fig. 4 is another embodiment schematic diagram of display unit 100 of the present invention.The structure of display unit 100 shown in Fig. 4 roughly as previously mentioned.Difference is, in this embodiment, the end face 342 in reflecting layer 340 is surperficial compared with outer portion 322 large with distance that is light guide plate 310 bottom surface 312 with the distance of light guide plate 310 bottom surface 312; In other words, on the section shown in Fig. 4, the end face in reflecting layer 340 is lower than the apparent height of outer portion 322.As shown in Figure 4, part mezzanine space 330 is inserted in reflecting layer 340.In this embodiment, the light reflectivity in reflecting layer 340 is adopted to be greater than the light reflectivity on outer portion 322 surface.On the other hand, for the situation avoiding the reflectance coating after thinning 350 to cause reflecting effect not good, the better employing of light reflectivity in reflecting layer 340 is greater than the light reflectivity of reflectance coating 350, and/or the light transmittance in reflecting layer 340 is less than the light transmittance of reflectance coating 350, set-up mode can promote the brightness of viewing area B edge by this.
Certainly; the present invention also can have other various embodiments; when not deviating from the present invention's spirit and essence thereof; those of ordinary skill in the art are when making various corresponding change and distortion according to the present invention, but these change accordingly and are out of shape the protection domain that all should belong to the claim appended by the present invention.
Claims (13)
1. a backlight module, is characterized in that, comprises:
One light guide plate, has a bottom surface;
One backboard, supports the edge of this bottom surface; Wherein, this backboard has an outer portion and an internal ring portion, and this outer portion this bottom surface parallel also supports the edge of this bottom surface; This internal ring portion extends towards this light guide plate center position from this outer portion, and and accompany a mezzanine space between this bottom surface;
One reflecting layer, is arranged at this internal ring portion towards in the one side of this bottom surface, and be filled to small part this mezzanine space and
One reflectance coating, is arranged on this bottom surface, and this outer portion supports this reflectance coating indirectly to support this bottom surface; Wherein this reflecting layer is between this reflectance coating and this internal ring portion.
2. backlight module according to claim 1, is characterized in that, this internal ring portion and this reflecting layer surround a hollow region jointly.
3. backlight module according to claim 2, it is characterized in that, this bottom surface is formed with multiple micro-structural, and this hollow region this cavity disperse characteristic density of drop shadow spread on this bottom surface is greater than this cavity disperse characteristic density of this internal ring portion drop shadow spread on this bottom surface.
4. backlight module according to claim 1, is characterized in that, the surface that end face and this outer portion in this reflecting layer support this bottom surface flushes.
5. backlight module according to claim 4, is characterized in that, the light reflectivity in this reflecting layer is identical with the light reflectivity on this outer portion surface.
6. backlight module according to claim 1, is characterized in that, the distance of the end face in this reflecting layer and this bottom surface is large with the distance of this bottom surface compared with this outer portion surface; The light reflectivity in this reflecting layer is greater than the light reflectivity on this outer portion surface.
7. backlight module according to claim 1, is characterized in that, the light reflectivity in this reflecting layer is greater than the light reflectivity of this reflectance coating.
8. backlight module according to claim 1, is characterized in that, the light transmittance in this reflecting layer is less than the light transmittance of this reflectance coating.
9. backlight module according to claim 1, is characterized in that, this reflecting layer supports this light guide plate indirectly by this reflectance coating of support.
10. a display unit, is characterized in that, comprises:
Backlight module according to any one of claim 1 to 9; And
One display floater, is arranged at the side of this light guide plate this bottom surface dorsad;
Wherein, this display floater has a viewing area, and the drop shadow spread of this internal ring portion on this display floater is positioned at the edge of this viewing area.
11. display unit according to claim 10, is characterized in that, this backboard comprises a sidewall and connects this outer portion tossing about relative to this internal ring portion, the outside of this this display unit of side walls enclose.
12. display unit according to claim 11, is characterized in that, comprise a location adhesive tape gluing further in the outer surface of this sidewall; Wherein, the both sides of this locating adhesive tape protrude from this sidewall respectively, and a lateral buckling connects the outer surface of this display floater in contrast to this backlight module, and opposite side then bends the outer surface connecting this outer portion.
13. display unit according to claim 12, it is characterized in that, the outer surface of this internal ring portion protrudes from the inner surface of this outer portion to form a depressed area outside this outer portion, and what this locating adhesive tape connected this outer portion outer surface is partially accommodated in this depressed part.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101137292A TWI485478B (en) | 2012-10-09 | 2012-10-09 | Backlight module having reflective layer and display apparatus thereof |
| TW101137292 | 2012-10-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103104865A CN103104865A (en) | 2013-05-15 |
| CN103104865B true CN103104865B (en) | 2015-05-06 |
Family
ID=48312939
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210535159.4A Active CN103104865B (en) | 2012-10-09 | 2012-12-12 | Backlight module with reflecting layer and display device thereof |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN103104865B (en) |
| TW (1) | TWI485478B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107219656A (en) * | 2016-03-22 | 2017-09-29 | 群创光电股份有限公司 | The manufacture method of display module and display module |
| TWI638207B (en) | 2016-03-22 | 2018-10-11 | 群創光電股份有限公司 | Display module and a method for manufacturing a display module |
| TWI666491B (en) * | 2018-05-08 | 2019-07-21 | 友達光電股份有限公司 | Display device |
| CN111640375B (en) * | 2019-07-24 | 2022-03-08 | 友达光电股份有限公司 | Flexible display device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM368095U (en) * | 2009-04-16 | 2009-11-01 | Chunghwa Picture Tubes Ltd | Backlight module |
| CN202371565U (en) * | 2011-11-04 | 2012-08-08 | 苏州茂立光电科技有限公司 | Backlight module and liquid crystal display device comprising same |
| CN102692761A (en) * | 2012-03-16 | 2012-09-26 | 友达光电股份有限公司 | Display device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11185673A (en) * | 1997-12-24 | 1999-07-09 | Sony Corp | Image display device |
| US20080013337A1 (en) * | 2006-07-13 | 2008-01-17 | Chia-Ching Lien | Backlight module and liquid crystal display |
| JP5180158B2 (en) * | 2008-10-31 | 2013-04-10 | スタンレー電気株式会社 | LCD backlight |
-
2012
- 2012-10-09 TW TW101137292A patent/TWI485478B/en active
- 2012-12-12 CN CN201210535159.4A patent/CN103104865B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM368095U (en) * | 2009-04-16 | 2009-11-01 | Chunghwa Picture Tubes Ltd | Backlight module |
| CN202371565U (en) * | 2011-11-04 | 2012-08-08 | 苏州茂立光电科技有限公司 | Backlight module and liquid crystal display device comprising same |
| CN102692761A (en) * | 2012-03-16 | 2012-09-26 | 友达光电股份有限公司 | Display device |
Also Published As
| Publication number | Publication date |
|---|---|
| TWI485478B (en) | 2015-05-21 |
| CN103104865A (en) | 2013-05-15 |
| TW201415129A (en) | 2014-04-16 |
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