CN100464226C - Straight-down type back-light module group and liquid-crystal display - Google Patents
Straight-down type back-light module group and liquid-crystal display Download PDFInfo
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- CN100464226C CN100464226C CNB2005100359119A CN200510035911A CN100464226C CN 100464226 C CN100464226 C CN 100464226C CN B2005100359119 A CNB2005100359119 A CN B2005100359119A CN 200510035911 A CN200510035911 A CN 200510035911A CN 100464226 C CN100464226 C CN 100464226C
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- mode set
- aphototropism mode
- down straight
- straight aphototropism
- reflection unit
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Abstract
The present invention relates to a direct down type backlight module and a liquid crystal display device. It contains one frame, one reflector element, one diffuse reflection unit and one lamp tube; wherein said lamp tube having at least one straight tube part and at least one elbow part, said frame having one light outgoing port, said diffuse reflection unit and said lamp tube in turn set in said frame, said diffuse reflection unit located lower side of said elbow part. Said invention has large light outgoing port area and high light utilization ratio.
Description
[technical field]
The present invention relates to a kind of down straight aphototropism mode set and a kind of LCD.
[background technology]
Module backlight is the key part and component of LCD, and the light source that it can provide the brightness abundance can normally show liquid crystal panel, and the structure of module backlight roughly is divided into two kinds of side-light type and straight-down negatives.Along with the size of LCD increases and the brightness demand improves, side-light type module backlight can't provide enough brightness, so down straight aphototropism mode set is used widely, and it can improve brightness by increasing fluorescent tube quantity.
A kind of structure of prior art down straight aphototropism mode set 9 such as Fig. 1, Fig. 2 and shown in Figure 3, it comprises framework 1, reflector plate 2 and fluorescent tube 3, this reflector plate 2 and this fluorescent tube 3 are successively set in this framework 1.This framework 1 tool one light-emitting window 6; This fluorescent tube 3 tool straight sections 31 and bent portion 32, this straight sections 31 are positioned at the light-emitting window below, and the emergent light of this straight sections is lighted liquid crystal panel (figure does not show) via light-emitting window, and this bent portion 32 is arranged on crested in the framework 1.
Because these bent portion 32 brightness are concentrated, influence the uniformity coefficient of module 9 backlight, cover up so this bent portion 32 is arranged in the framework 1, to avoid influencing the uniformity coefficient of module backlight.But this mode will lose the emergent light of bent portion, and light utilization efficiency is reduced, and the framework of covering this bent portion will certainly widen, and the area of this light-emitting window is reduced, and then cause LCD brightness lower.
[summary of the invention]
In order to solve the problem that the light-emitting window area is little, light utilization efficiency is low of down straight aphototropism mode set in the prior art, be necessary to provide the down straight aphototropism mode set that a kind of light-emitting window area is big, light utilization efficiency is high.
In order to solve the lower problem of LCD brightness in the prior art, be necessary the LCD that provides a kind of brightness higher.
The disclosed a kind of down straight aphototropism mode set of a preferred embodiment of the present invention, it comprises: a framework, a reflector element, a diffused reflection unit and a fluorescent tube, at least one straight sections of this fluorescent tube tool and at least one bent portion, this reflector element, this diffused reflection unit and this fluorescent tube are successively set in this framework, this framework comprises a light-emitting window, and this straight sections and this bent portion are positioned at this light-emitting window below; This diffused reflection unit is positioned at this bent portion below.
The disclosed a kind of LCD of another preferred embodiment of the present invention comprises: a liquid crystal panel and a direct-type backlight module; This down straight aphototropism mode set comprises: a framework, a reflector element, a diffused reflection unit and a fluorescent tube, at least one straight sections of this fluorescent tube tool and at least one bent portion, this framework comprises a light-emitting window, this straight sections and this bent portion are positioned at this light-emitting window below, and this diffused reflection unit is positioned at this bent portion below; This reflector element, this diffused reflection unit, this fluorescent tube and this liquid crystal panel are successively set in this framework.
Compared to prior art, this down straight aphototropism mode set comprises a fluorescent tube, the bent portion of this fluorescent tube is positioned at the light-emitting window below, and this LCD or down straight aphototropism mode set further comprise a diffused reflection unit, this diffused reflection unit is positioned at the light scatter of under this bent portion bent portion being concentrated to be opened, and light is disperseed and evenly distribution.Match with this bent portion by this diffused reflection unit, can increase the area of this down straight aphototropism mode set light-emitting window, improve light utilization efficiency, and then improve the brightness of LCD.
[description of drawings]
Fig. 1 is the down straight aphototropism mode set synoptic diagram of a kind of LCD of prior art.
Fig. 2 is the diagrammatic cross-section of Fig. 1 along the II-II line.
Fig. 3 is the diagrammatic cross-section of Fig. 1 along the III-III line.
Fig. 4 is the schematic cross-section of LCD first embodiment of the present invention.
Fig. 5 is down straight aphototropism mode set the Lights section floor map of LCD first embodiment of the present invention.
Fig. 6 is the diagrammatic cross-section of Fig. 5 along the VI-VI line.
Fig. 7 is the diagrammatic cross-section of Fig. 5 along the VII-VII line.
Fig. 8 is the diffused reflection unit synoptic diagram of LCD second embodiment of the present invention.
Fig. 9 is down straight aphototropism mode set the Lights section floor map of LCD the 3rd embodiment of the present invention.
Figure 10 is down straight aphototropism mode set the Lights section schematic cross-section of LCD the 4th embodiment of the present invention.
[embodiment]
See also Fig. 4, be the schematic cross-section of LCD first embodiment of the present invention.This LCD 100 comprises a liquid crystal panel 110 and a direct-type backlight module 190; This down straight aphototropism mode set 190 comprises a brightening piece 120, a diffuser plate 130 and the Lights section 191; This liquid crystal panel 110, this brightening piece 120, this diffuser plate 130 and the 191 stacked settings of this Lights section.
Down straight aphototropism mode set the Lights section 191 of LCD first embodiment of the present invention is as Fig. 5, Figure 6 and Figure 7.This down straight aphototropism mode set the Lights section 191 comprises a framework 140, a reflector element 150, a diffused reflection unit 151 and four fluorescent tubes 160.This framework 140 tools one light-emitting window 180; This reflector element 150 is formed in one with this diffused reflection unit 151, and this diffused reflection unit 151 comprises a undaform curved-surface structure, and is made by lighttight reflection material; This fluorescent tube 160 is a U type fluorescent tube, and it comprises two straight sections 161 and a bent portion 162.This reflector element 150, this diffused reflection unit 151 and this fluorescent tube 160 are successively set in this framework 140; This diffused reflection unit 151 is positioned at this bent portion 162 belows.The straight sections 161 and the bent portion 162 of this fluorescent tube 160 all are positioned at this light-emitting window 180 belows, and the emergent light of this straight sections 161 and this bent portion 162 is lighted this liquid crystal panel 110 via this light-emitting window 180.
The bent portion 162 of this LCD 100 is positioned at light-emitting window 180 belows, and this LCD 100 tools one diffused reflection unit 151, this diffused reflection unit 151 is positioned at light scatter that this bent portion 162 times concentrates this bent portion 162 to be opened, and light is disperseed and evenly distributes.Match with this bent portion 162 by this diffused reflection unit 151, can increase the area of this light-emitting window 180, improve light utilization efficiency.
See also Fig. 8, be the diffused reflection unit synoptic diagram of LCD second embodiment of the present invention.Be with the first embodiment difference: this diffused reflection unit 251 can also be diffuse reflection projection dot matrix, is arranged on this reflector element 250.
See also Fig. 9, be the Lights section synoptic diagram of the down straight aphototropism mode set of LCD the 3rd embodiment of the present invention.Be with the first embodiment difference: this down straight aphototropism mode set the Lights section 391 comprises two W type fluorescent tubes 360 and three diffused reflection unit 351, these two W type fluorescent tubes, 360 tools, six bent portions 362; Wherein, four adjacent bent portions are shared a diffused reflection unit 351, and all the other two are disperseed a bent portion corresponding diffused reflection unit 351 respectively.
See also Figure 10, be the Lights section schematic cross-section of the down straight aphototropism mode set of LCD the 4th embodiment of the present invention.Be with the first embodiment difference: the diffused reflection unit 451 of this down straight aphototropism mode set the Lights section 491 is a single structure, pastes on this reflector element 450.
Claims (9)
1. down straight aphototropism mode set, it comprises: a framework, a reflector element and a fluorescent tube, at least one straight sections of this fluorescent tube tool and at least one bent portion, this reflector element and this fluorescent tube are successively set in this framework, this framework comprises a light-emitting window, and this straight sections and bent portion are positioned at this light-emitting window below; It is characterized in that: this down straight aphototropism mode set further comprises a diffused reflection unit, and this diffused reflection unit is positioned at this bent portion below.
2. down straight aphototropism mode set as claimed in claim 1 is characterized in that: this reflector element and this diffused reflection unit are formed in one.
3. down straight aphototropism mode set as claimed in claim 1 is characterized in that: this diffused reflection unit is a single structure, is covered on this reflector element top.
4. down straight aphototropism mode set as claimed in claim 1 is characterized in that: this diffused reflection unit comprises a undaform curved-surface structure.
5. down straight aphototropism mode set as claimed in claim 1 is characterized in that: this diffused reflection unit is a diffuse reflection projection dot matrix.
6. down straight aphototropism mode set as claimed in claim 1 is characterized in that: this fluorescent tube is a U type fluorescent tube.
7. down straight aphototropism mode set as claimed in claim 1 is characterized in that: this fluorescent tube is a W type fluorescent tube.
8. down straight aphototropism mode set as claimed in claim 1 is characterized in that: this down straight aphototropism mode set further comprises a diffuser plate and a brightening piece, this fluorescent tube, this diffuser plate and the stacked setting of this brightening piece.
9. a LCD comprises a liquid crystal panel and a direct-type backlight module, and this down straight aphototropism mode set is any described down straight aphototropism mode set in the claim 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100359119A CN100464226C (en) | 2005-07-09 | 2005-07-09 | Straight-down type back-light module group and liquid-crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100359119A CN100464226C (en) | 2005-07-09 | 2005-07-09 | Straight-down type back-light module group and liquid-crystal display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1892340A CN1892340A (en) | 2007-01-10 |
| CN100464226C true CN100464226C (en) | 2009-02-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100359119A Expired - Fee Related CN100464226C (en) | 2005-07-09 | 2005-07-09 | Straight-down type back-light module group and liquid-crystal display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100464226C (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06273761A (en) * | 1993-03-17 | 1994-09-30 | Sony Corp | Backlight unit |
| JPH0876122A (en) * | 1994-09-02 | 1996-03-22 | Casio Comput Co Ltd | Illumination device |
| JP2005085689A (en) * | 2003-09-10 | 2005-03-31 | Advanced Display Inc | Planar light source device and display device |
-
2005
- 2005-07-09 CN CNB2005100359119A patent/CN100464226C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06273761A (en) * | 1993-03-17 | 1994-09-30 | Sony Corp | Backlight unit |
| JPH0876122A (en) * | 1994-09-02 | 1996-03-22 | Casio Comput Co Ltd | Illumination device |
| JP2005085689A (en) * | 2003-09-10 | 2005-03-31 | Advanced Display Inc | Planar light source device and display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1892340A (en) | 2007-01-10 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090225 Termination date: 20170709 |
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| CF01 | Termination of patent right due to non-payment of annual fee |