CN100447629C - Fluorescent tube reflection device used on downward back lighting module - Google Patents
Fluorescent tube reflection device used on downward back lighting module Download PDFInfo
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- CN100447629C CN100447629C CNB011446390A CN01144639A CN100447629C CN 100447629 C CN100447629 C CN 100447629C CN B011446390 A CNB011446390 A CN B011446390A CN 01144639 A CN01144639 A CN 01144639A CN 100447629 C CN100447629 C CN 100447629C
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- fluorescent tube
- reflection
- lighting module
- back lighting
- reflection device
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Abstract
The present invention relates to a lamp tube reflecting device for a direct-downward backlight module, wherein the backlight module comprises a plurality of lamp tubes, a diffusion board, a bottom-edge reflecting board and two side-edge reflecting boards; the diffusion board is arranged above the lamp tubes; the bottom-edge reflecting board is arranged below the lamp tubes; the two side-edge reflecting boards are respectively arranged at the two opposite side edges of the backlight module; the lamp tube reflecting device is positioned between the lamp tubes and the diffusion board and comprises a reflecting layer for reflecting partial light rays projected by the lamp tubes to the bottom-edge reflecting board or the side-edge reflecting boards. The present invention can reach light uniformity, can increase the utilization rate of the light rays, can reduce the thickness of the backlight module, and can be applied to different backlight module designs by changing the size and the shape of the lamp tube reflecting device.
Description
Technical field
The present invention relates to a kind of downward back lighting module, in detail, is the fluorescent tube reflection device design that is used for the slimming downward back lighting module of LCD about a kind of.
Background technology
LCD has been widely used on PC, laptop and the various communication apparatus now, its principle is to utilize the liquid crystal board of multipolarization crystallization to show customizing messages, this liquid crystal board can form image according to extra electric field, yet liquid crystal can absorb light source and but can't disperse, so LCD must dispose back lighting module, so that light source to be provided.
The back lighting module that present industry is used for LCD has various ways, and wherein typical downward back lighting module is by shown in Figure 1, and downward back lighting module 1 comprises a plurality of fluorescent tubes 11, a diffuser plate 12, a base reflecting plate 13 and dual side-edge reflecting plate 14.This back lighting module 1 is arranged in the below of LCD liquid crystal board; This fluorescent tube 11 can be fluorescent tube, in order to light source to be provided: this diffuser plate 12 is arranged at the top of this fluorescent tube 11, its material is generally polymethylmethacrylate (PMMA, polymethylmetharylate) or polycarbonate (PC, polycarbonate) light in order to this fluorescent tube 11 is dispersed diffuses to liquid crystal board; This base reflecting plate 13 is arranged at the below of this fluorescent tube 11, its material is commonly used to be reflection-type polycarbonate or polyoxyethylene terephthalic acids (PET, polyethylene terephthalate) reflecting plate, in order to the source reflection that this fluorescent tube 11 is dissipated into this back lighting module 1 bottom to this diffuser plate 12; This side reflecting plate 14 is arranged at the relative dual-side of this back lighting module, its material also is commonly used reflection-type polycarbonate or polyoxyethylene terephthalic acids reflecting plate, in order to the source reflection of the side that this fluorescent tube 11 is dissipated into this back lighting module 1 to this diffuser plate 12.
Downward back lighting module 1 as shown in Figure 1 is because of having this fluorescent tube 11 that directly places these diffuser plate 12 belows, so its briliancy height, and because of simple in structure, compare with other forms of back lighting module, have lightweight advantage, in addition, there is no veil on the diffuser plate 12 of downward back lighting module 1, when the user watched, it is bigger that the visual angle of screen is also felt.But then, because fluorescent tube 11 area just above are directed to this diffuser plate 12 because of light, make this zone brighter, and on the contrary, the position, top is then darker between fluorescent tube and fluorescent tube, so the light uniformity coefficient of this back lighting module 1 is not good, simultaneously also because of this fluorescent tube 11 is directed to this diffuser plate 12, so this downward back lighting module 1 needs in this fluorescent tube 11 and 12 enough distances of tool of this diffuser plate, in order to avoid luminosity is bright excessively, compare with other back lighting modules, also have the bigger shortcoming of thickness.
For solving the above problems, Japanese kokai publication hei 05-323312 patent disclosure fluorescent tube is imbedded one with in the reflecting plate of making as polycarbonate material so that the light uniformity coefficient improves, yet these methods can't reduce the thickness of back lighting module;
In addition, Japanese kokai publication hei 05-333333 patent then advises placing a prism plate between fluorescent tube and diffuser plate, utilize the refraction of a series of prisms, make all directions light that exhales by fluorescent tube, can throw into diffuser plate equably, but the thickness of this patent back lighting module can't reduce still because of the adding of prism plate; In addition, TOHKEMY 2000-338895 patent discloses a back lighting module 2 as shown in Figure 2, it comprises a plurality of fluorescent tubes 21, a diffuser plate 22, a base reflecting plate 23, dual side-edge reflecting plate 24 and at a plurality of lens 25 of 22 of this each fluorescent tube 21 and this diffuser plates.These lens 25 can be convex lens, and the light in order to concentrate this fluorescent tube 21 to be exhaled also can be concavees lens, and in order to scattered beam, this all can make light inject diffuser plate equably, but same, and this back lighting module 2 still can't reach the function of effective reduction thickness.
Therefore, developing a kind of luminance uniformity that makes increases, but does not increase a kind of novelty and the rich creationary back lighting module of thickness, is the problem that needs to be resolved hurrily for industry.
Summary of the invention
The object of the present invention is to provide a kind of fluorescent tube reflection device that is used for downward back lighting module, it can reduce inhomogeneous that light directly over the fluorescent tube directly is projected to diffuser plate and is caused, and can improve light utilization, and the thickness of back lighting module is reduced.
Another object of the present invention is to provide a kind of fluorescent tube reflection device that is used for downward back lighting module, it can borrow the size and shape that changes this fluorescent tube reflection device, and is applied to different back lighting modules.
In order to achieve the above object, the invention provides a kind of fluorescent tube reflection device that is used for downward back lighting module, wherein this back lighting module comprises a plurality of fluorescent tubes, a diffuser plate and a reflecting plate: this diffuser plate is arranged at the top of this fluorescent tube; This reflecting plate is arranged at the below of this fluorescent tube, and forms an accommodation space between this diffuser plate and these fluorescent tubes; This fluorescent tube reflection device is identical with the fluorescent tube number, is positioned at this accommodation space, and is covered in the top of each fluorescent tube, and it comprises: a reflection horizon, the part light that is used for fluorescent tube is projected reflexes to reflecting plate.
In other words, the invention provides a kind of fluorescent tube reflection device that is used for downward back lighting module, wherein this back lighting module comprises a plurality of fluorescent tubes, a diffuser plate, a base reflecting plate and dual side-edge reflecting plate; This diffuser plate is arranged at the top of fluorescent tube; This base reflecting plate is arranged at the below of fluorescent tube; This dual side-edge reflecting plate is arranged at two relative sides of this back lighting module respectively; Wherein, this fluorescent tube reflection device is positioned between fluorescent tube and diffuser plate, and it comprises a reflection horizon, is used for the part that this fluorescent tube is projected. and light reflexes to base reflecting plate or side reflecting plate.
Described fluorescent tube reflection device also comprises a plurality of fluorescent tube reflection lids that are covered in the fluorescent tube top, and described reflection horizon is positioned at fluorescent tube reflection capping on a surface of fluorescent tube.
This fluorescent tube reflection lid is a flat shape.
This fluorescent tube reflection lid is a curve form.
This fluorescent tube reflection lid is a reclinate curve form.
This fluorescent tube reflection lid is a curve form that is bent upwards.
This back lighting module comprises a plurality of fixation assemblies in addition, and this fixation assembly has two stationary installations, and this two stationary installation is arranged at two ends of fluorescent tube, is used for fixing fluorescent tube and fluorescent tube reflection lid.
This back lighting module comprises a plurality of fixation assemblies in addition, and this fixation assembly comprises a holder and two retaining elements, and this two retaining element is extended to two ends of fluorescent tube reflection lid respectively by holder, in order to fluorescent tube reflection lid is fixed on the holder.
Also comprise the dual side-edge reflecting plate, be arranged at two relative sides of this back lighting module respectively.
The present invention also provides a kind of fluorescent tube reflection device that is used for a straight-down negative back lighting module, and wherein this back lighting module comprises a plurality of fluorescent tubes, a diffuser plate and a reflecting plate; This diffuser plate is arranged at the top of described fluorescent tube; This reflecting plate is arranged at the below of described fluorescent tube; One reflection horizon, this reflection horizon is arranged at the first half of this surface of the light tube, and the part light that is used for this fluorescent tube is projected reflexes to this reflecting plate.
This reflection horizon is positioned at the first half of this inner surface of tube.
This reflection horizon is positioned at the first half of this fluorescent tube outside surface.
Also comprise the dual side-edge reflecting plate, be arranged at two relative sides of this back lighting module respectively.
Advantage of the present invention makes the upwards light change direction of projection of fluorescent tube, and the optical uniformity of lifting downward back lighting module, light directly is not projected on the diffuser plate directly over the reason fluorescent tube, and make brightness too high, and because of the reflection of reflection unit, can improve light utilization, and because of light not for directly upwards being projected to diffuser plate, so do not have the restriction of the distance that between fluorescent tube and diffuser plate, keeps, the thickness of whole back lighting module is reduced.In addition, reflection unit of the present invention can be with the design of different back lighting modules, one reflection horizon can be provided on fluorescent tube or a reflection lid is provided in addition, say it for example, according to fluorescent tube number and position, the diffuser plate of difformity design and the back lighting module of reflecting plate and differing heights, and can be different shapes and size.
Description of drawings
The present invention is described in detail below in conjunction with drawings and Examples:
Fig. 1 shows existing downward back lighting module diagrammatic cross-section;
Fig. 2 shows the downward back lighting module diagrammatic cross-section;
Fig. 3 shows the downward back lighting module diagrammatic cross-section of first embodiment of the invention;
Fig. 4 shows the downward back lighting module diagrammatic cross-section of second embodiment of the invention;
Fig. 5 shows the downward back lighting module diagrammatic cross-section of third embodiment of the invention;
Fig. 6 shows the downward back lighting module diagrammatic cross-section of fourth embodiment of the invention;
Fig. 7 shows the downward back lighting module diagrammatic cross-section of fifth embodiment of the invention; And
Fig. 8 shows the fluorescent tube that is used for downward back lighting module, fluorescent tube reflection lid and the stationary installation schematic perspective view of third embodiment of the invention.
Symbol description among the figure:
1 existing downward back lighting module
11 fluorescent tubes
12 diffuser plates
13 base reflecting plates
14 side reflecting plates
2 existing downward back lighting modules
21 fluorescent tubes
22 diffuser plates
23 base reflecting plates
24 side reflecting plates
25 lens
The downward back lighting module of 3 first embodiment of the invention
31 fluorescent tubes
32 diffuser plates
33 base reflecting plates
34 side reflecting plates
35 reflection horizon
The downward back lighting module of 4 second embodiment of the invention
41 fluorescent tubes
42 diffuser plates
43 base reflecting plates
44 side reflecting plates
45 reflection horizon
The downward back lighting module of 5 third embodiment of the invention
51 fluorescent tubes
52 diffuser plates
53 base reflecting plates
54 side reflecting plates
55 fluorescent tubes reflection lid
551 reflection horizon
552 light non-transmittable layers
56 stationary installations
561 holders
562 retaining elements
The downward back lighting module of 6 fourth embodiment of the invention
61 fluorescent tubes
62 diffuser plates
63 base reflecting plates
64 side reflecting plates
65 fluorescent tubes reflection lid
651 reflection horizon
652 light non-transmittable layers
The downward back lighting module of 7 fifth embodiment of the invention
71 fluorescent tubes
72 diffuser plates
73 base reflecting plates
74 side reflecting plates
75 fluorescent tubes reflection lid
751 reflection horizon
752 light non-transmittable layers
Embodiment
Preferred embodiment division of the present invention is as follows:
First embodiment
Referring to the downward back lighting module 3 of Fig. 3, it comprises a plurality of fluorescent tubes 31, a diffuser plate 32, a reflecting plate 33, dual side-edge reflecting plate 34; Wherein this fluorescent tube 31 is in order to provide the light source of this back lighting module 3, and the surface has a reflection horizon 35 within it, this diffuser plate 32 is positioned at the top of this fluorescent tube 31, in order to diffused light source, 33 of this base reflecting plates are below this fluorescent tube 31, and this side reflecting plate 34 is positioned at each side of this back lighting module 3, is used to reflect side light that this lamp group 31 throwed to this diffuser plate 32.
The invention is characterized in the design in reflection horizon 35, it is positioned at the first half of these fluorescent tube 31 inside surfaces, the light that this fluorescent tube 31 upwards can be throwed is changed into downward direction, and the light that this fluorescent tube 31 projects is reflexed to this base reflecting plate 33 or this side reflecting plate 34, be projected to this diffuser plate 32 again by the reflection of said reflection plate: and utilize the reflex of this base reflecting plate 33 and this side reflecting plate 34, light can be reflexed to the zone of being covered by this reflection horizon 35, make diffuser plate 32 zones of these 35 tops, reflection horizon not have the dark place appearance, and reach identical brightness with other zone, increase with the overall brightness homogeneity.
Second embodiment
Downward back lighting module 4 referring to Fig. 4, its composition is similar to the back lighting module 3 of Fig. 3, comprise a plurality of fluorescent tubes 41, a diffuser plate 42, a reflecting plate 43, dual side-edge reflecting plate 44: wherein this fluorescent tube 41 is in order to provide the light source of this back lighting module 4, and has a reflection horizon 45 at the first half of its outside surface, its light that this fluorescent tube 41 upwards can be throwed adds strong reflection on this reflecting plate 43, reflexes to this diffuser plate 42 again.
The 3rd embodiment
Referring to the downward back lighting module 3 of Fig. 5 and Fig. 8, it comprises a plurality of fluorescent tubes 51, a diffuser plate 52, a reflecting plate 53, dual side-edge reflecting plate 54, covers 55 and two stationary installations 56 with this fluorescent tube with the fluorescent tube reflection of number; This fluorescent tube 51 is in order to provide the light source of this back lighting module 5, this diffuser plate 52 is positioned at the top of this fluorescent tube 51, in order to diffused light source, 53 of this base reflecting plates are below this fluorescent tube 51, and this side reflecting plate 54 is positioned at each side of this back lighting module 5, is used to reflect side light that this lamp group 51 throwed to this diffuser plate 52, covers 55 with this fluorescent tube 51 with a plurality of fluorescent tubes reflections of number, it is covered in the top of this each fluorescent tube 51, and is positioned at 52 of this fluorescent tube 51 and this diffuser plates.
Referring to Fig. 8, this stationary installation 56 is arranged at this fluorescent tube 51 two ends, this stationary installation 56 comprises a holder 561 and two retaining elements 562, this holder 561 is positioned at this fluorescent tube 51 and 55 two ends are covered in the reflection of this fluorescent tube, can be used for fixing this fluorescent tube, and combine with this retaining element 562, be used for 55 tops of being fixed in this fluorescent tube 51 are covered in the reflection of this fluorescent tube, and further the reflection of this fluorescent tube cover 55 and this fluorescent tube 51 be fixed in this back lighting module 5, this holder 561 can be individually independent or be connected every adjacent holder, also can be provided by other fixed frame or the housing of this back lighting module 5 or LCD.
The fluorescent tube reflection of present embodiment covers 55, comprises a reflection horizon 551 and a light non-transmittable layers 552.This reflection horizon 551 is positioned at this fluorescent tube reflection and covers 55 bottom surfaces towards this fluorescent tube 51, this bottom surface towards this fluorescent tube 51 is a plane, the light that this fluorescent tube 51 upwards can be throwed is changed into downward direction, and the light that this fluorescent tube 51 projects is reflexed to this base reflecting plate 53 or this side reflecting plate 54, be projected to this diffuser plate 52 again by the reflection of said reflection plate; This light non-transmittable layers 552 is positioned at this fluorescent tube reflection and covers 55 end faces towards this diffuser plate 52, be used to cover the light that this fluorescent tube 51 upwards directly is projected to this diffuser plate 52, and utilize the reflex of this base reflecting plate 53 and this side reflecting plate 54, light can be reflexed to by this fluorescent tube reflection and cover 55 zones of covering, make diffuser plate 52 zones that 55 tops are covered in this fluorescent tube reflection not have the dark place appearance, and reach identical brightness with other zone, so that the overall brightness homogeneity increases.
The 4th embodiment
Downward back lighting module 6 referring to Fig. 6, its composition is similar to the back lighting module 5 of Fig. 5, comprise a plurality of fluorescent tubes 61, a diffuser plate 62, a reflecting plate 63, dual side-edge reflecting plate 64, cover 65 and two stationary installations (figure is demonstration) with this fluorescent tube with the fluorescent tube reflection of number: this fluorescent tube reflects and covers 65 tops that are covered in this fluorescent tube 61, comprise and be positioned at the reflection of this fluorescent tube and cover 65 reflection horizon 651, and be positioned at this fluorescent tube and reflect and cover 65 light non-transmittable layers 652 towards an end face of this diffuser plate 62 towards a bottom surface of this fluorescent tube 61.It is a reclinate curve form that this fluorescent tube reflection covers 65, and its light that this fluorescent tube 61 upwards can be throwed concentrates on this reflecting plate 63, reflexes to this diffuser plate 62 again.
The 5th embodiment
Referring to the downward back lighting module 7 of Fig. 7, its composition is similar to the back lighting module 5 of Fig. 5, comprises a plurality of fluorescent tubes 71, a diffuser plate 72, a reflecting plate 73, dual side-edge reflecting plate 74, covers 75 and two stationary installations with this fluorescent tube with the fluorescent tube reflection of number; 75 tops that are covered in this fluorescent tube 71 covers in the reflection of this fluorescent tube, comprise to be positioned at this fluorescent tube reflection and to cover 75 reflection horizon 751 towards a bottom surface of this fluorescent tube 71, and are positioned at this fluorescent tube and reflect and cover 75 light non-transmittable layers 752 towards an end face of this diffuser plate 72.It is a curve form that is bent upwards that this fluorescent tube reflection covers 75, and its light that this fluorescent tube 71 upwards can be throwed adds strong reflection on this reflecting plate 73, reflexes to this diffuser plate 72 again.
The present invention is applicable to the downward back lighting module of all LCD, and the shape of reflection unit and size also are not limited to shown in the foregoing description, but can change fluorescent tube upwards the light of projection be all the scope of institute of the present invention desire protection for downwards.
Method of the present invention and feature will be more obvious through the explanation of above-mentioned example, now will be appreciated that, anyly not break away from the modification or the change of doing under the spirit of the present invention, all belong to protection domain of the present invention.
Claims (13)
1. fluorescent tube reflection device that is used for downward back lighting module, wherein this back lighting module comprises a plurality of fluorescent tubes, a diffuser plate and a reflecting plate; This diffuser plate is arranged at the top of this fluorescent tube; This reflecting plate is arranged at the below of this fluorescent tube, and forms an accommodation space between this diffuser plate and these fluorescent tubes; It is characterized in that:
This fluorescent tube reflection device is identical with the fluorescent tube number, is positioned at this accommodation space, and is covered in the top of each fluorescent tube, and it comprises:
One reflection horizon, the part light that is used for fluorescent tube is projected reflexes to reflecting plate.
2. fluorescent tube reflection device according to claim 1 is characterized in that: described fluorescent tube reflection device also comprises a plurality of fluorescent tube reflection lids that are covered in the fluorescent tube top, and described reflection horizon is positioned at fluorescent tube reflection capping on a surface of fluorescent tube.
3. fluorescent tube reflection device according to claim 2 is characterized in that: this fluorescent tube reflection lid is a flat shape.
4. fluorescent tube reflection device according to claim 2 is characterized in that: this fluorescent tube reflection lid is a curve form.
5. fluorescent tube reflection device according to claim 2 is characterized in that: this fluorescent tube reflection lid is a reclinate curve form.
6. fluorescent tube reflection device according to claim 2 is characterized in that: this fluorescent tube reflection lid is a curve form that is bent upwards.
7. fluorescent tube reflection device according to claim 2 is characterized in that: this back lighting module comprises a plurality of fixation assemblies in addition, and this fixation assembly has two stationary installations, and this two stationary installation is arranged at two ends of fluorescent tube, is used for fixing fluorescent tube and fluorescent tube reflection lid.
8. fluorescent tube reflection device according to claim 2, it is characterized in that: this back lighting module comprises a plurality of fixation assemblies in addition, this fixation assembly comprises a holder and two retaining elements, this two retaining element is extended to two ends of fluorescent tube reflection lid respectively by holder, in order to fluorescent tube reflection lid is fixed on the holder.
9. fluorescent tube reflection device according to claim 1 is characterized in that: also comprise the dual side-edge reflecting plate, be arranged at two relative sides of this back lighting module respectively.
10. fluorescent tube reflection device that is used for a straight-down negative back lighting module, wherein this back lighting module comprises a plurality of fluorescent tubes, a diffuser plate and a reflecting plate; This diffuser plate is arranged at the top of described fluorescent tube; This reflecting plate is arranged at the below of described fluorescent tube; It is characterized in that:
One reflection horizon, this reflection horizon is arranged at the first half of this surface of the light tube, and the part light that is used for this fluorescent tube is projected reflexes to this reflecting plate.
11. fluorescent tube reflection device according to claim 10 is characterized in that: this surface of the light tube is the inside surface of this fluorescent tube.
12. fluorescent tube reflection device according to claim 10 is characterized in that: this surface of the light tube is the outside surface of this fluorescent tube.
13. fluorescent tube reflection device according to claim 10 is characterized in that: also comprise the dual side-edge reflecting plate, be arranged at two relative sides of this back lighting module respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011446390A CN100447629C (en) | 2001-12-21 | 2001-12-21 | Fluorescent tube reflection device used on downward back lighting module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011446390A CN100447629C (en) | 2001-12-21 | 2001-12-21 | Fluorescent tube reflection device used on downward back lighting module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1427286A CN1427286A (en) | 2003-07-02 |
| CN100447629C true CN100447629C (en) | 2008-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011446390A Expired - Fee Related CN100447629C (en) | 2001-12-21 | 2001-12-21 | Fluorescent tube reflection device used on downward back lighting module |
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| Country | Link |
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| CN (1) | CN100447629C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4488864B2 (en) * | 2004-10-28 | 2010-06-23 | エーユー オプトロニクス コーポレイション | Backlight device and liquid crystal display device using the same |
| CN100361006C (en) * | 2005-03-31 | 2008-01-09 | 友达光电股份有限公司 | Down backlight unit structure of liquid crystal display |
| CN100465503C (en) * | 2005-06-29 | 2009-03-04 | 王默文 | Reflection device of fluorescent tube |
| CN105676533A (en) * | 2016-03-30 | 2016-06-15 | 合肥惠科金扬科技有限公司 | Double-sided light-emitting backlight module and display device |
| CN106122834A (en) * | 2016-06-29 | 2016-11-16 | 南京久达光电科技有限公司 | Light-emitting diode system and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6472193A (en) * | 1987-09-14 | 1989-03-17 | Hitachi Ltd | Backlight apparatus for liquid crystal display element |
| WO1994011776A1 (en) * | 1992-11-09 | 1994-05-26 | Honeywell Inc. | Backlit display |
| JP2000066200A (en) * | 1998-08-18 | 2000-03-03 | Sony Corp | Liquid crystal display device |
| US6215537B1 (en) * | 1998-11-12 | 2001-04-10 | Mitsubishi Denki Kabushiki Kaisha | Liquid crystal display having backscattering polarizer |
-
2001
- 2001-12-21 CN CNB011446390A patent/CN100447629C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6472193A (en) * | 1987-09-14 | 1989-03-17 | Hitachi Ltd | Backlight apparatus for liquid crystal display element |
| WO1994011776A1 (en) * | 1992-11-09 | 1994-05-26 | Honeywell Inc. | Backlit display |
| JP2000066200A (en) * | 1998-08-18 | 2000-03-03 | Sony Corp | Liquid crystal display device |
| US6215537B1 (en) * | 1998-11-12 | 2001-04-10 | Mitsubishi Denki Kabushiki Kaisha | Liquid crystal display having backscattering polarizer |
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| CN1427286A (en) | 2003-07-02 |
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