CN1641430A - Straight-down back light module - Google Patents
Straight-down back light module Download PDFInfo
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- CN1641430A CN1641430A CN 200410000261 CN200410000261A CN1641430A CN 1641430 A CN1641430 A CN 1641430A CN 200410000261 CN200410000261 CN 200410000261 CN 200410000261 A CN200410000261 A CN 200410000261A CN 1641430 A CN1641430 A CN 1641430A
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- mode set
- down straight
- straight aphototropism
- aphototropism mode
- control layer
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Abstract
This invention is about a kind of a straight-down apheliotropic module group applied in a liquid crystal display. The straight-down apheliotropic module group comprises a frame body, several lamp tubes and a light beam controlling layer. Furthermore the light beam controlling layer at least distribute in the area above the lamp tubes to respectively control the light beam intensity of the lamp tubes in every outdiffusing direction. Because this invention has a light beam controlling layer which is equipped at least above the lamp tubes, compared with the present straight-down apheliotropic module group, the one of this invention has better lamp-house equality. The light beam controlling layer is easier to be made compared with the present technique of using flute.
Description
Technical field
The present invention relates to a kind of module backlight (back light module), particularly relate to a kind of down straight aphototropism mode set (direct type back light module).
Background technology
In order to cooperate modern life pattern, it is frivolous that the volume of video signal or device for image day by day is tending towards.Traditional cathode-ray tube (Cathode Ray Tube, CRT) it is ripe and relevant upper, middle and lower trip industry is complete to have a process technique, but CRT adopts the mode of cathode ray discharge to develop, so the structure in electron discharge chamber must be arranged, make that display is bulky and take up space, and have radiant rays when showing eyes are caused potential influence.Therefore, the plane formula display (Flat Panel Display) that cooperates photoelectric technology and semiconductor fabrication to be developed, for example LCD (LCD), organic light emitting display (OLED) or plasma display panel (Plasma Display Panel, PDP), because have advantages such as low power consumption, low radiant quantity and high demonstration image quality, become the main flow of display product gradually.
From the above, with regard to LCD, utilize kenel can slightly be divided into three kinds of reflective liquid-crystal display (reflective LCD), penetrating LCD (transmissive LCD) and semi-penetrated semi-reflected liquid crystal displays according to its light source.With the penetration or the LCD of semi-penetration, semi-reflective is example, it is made of a liquid crystal panel and a module backlight, wherein, liquid crystal panel is made of the liquid crystal layer that two transparency carriers and are disposed between this two transparency carrier, and module backlight makes LCD reach the effect of demonstration in order to provide this liquid crystal panel required area source.In addition, module backlight is distinguished into down straight aphototropism mode set and lateral incident type backlight module (side typeback light module) again.Compared to lateral incident type backlight module, down straight aphototropism mode set need not dispose light guide plate (light guide plate), and provide the area source of higher brightness, therefore when the brightness to light source has high requirements, usually adopt down straight aphototropism mode set, below should have known down straight aphototropism mode set now and describe.
Seeing also shown in Figure 1ly, is the synoptic diagram of existing known down straight aphototropism mode set.Existing known down straight aphototropism mode set 100 is made of a framework 110, a plurality of fluorescent tube 120 and a diffusion sheet 130 (diffusion plate).Wherein, these fluorescent tubes 120 are to be disposed in the framework 110, and diffusion sheet 130 is to be disposed on the framework 110.The light that above-mentioned fluorescent tube 120 is sent via diffusion sheet 130 scatterings or refraction after, form area source from the surperficial outgoing of diffusion sheet 130.It should be noted that fluorescent tube 120 be with suitable spacing arrangement in framework 110, so diffusion sheet 130 shows the strip region that brightness differs.Though diffusion sheet 130 has the effect of diffusion light, the existing known down straight aphototropism mode set of this kind still exists the phenomenon of brightness irregularities.
In Taiwan patent announcement number No. 538211, propose another and improve the uneven method of light source.Seeing also shown in Figure 2ly, is synoptic diagram of another existing known down straight aphototropism mode set.Should have known down straight aphototropism mode set 200 now, be constituted by a framework 210, a plurality of fluorescent tube 220 and a transparent panel 230.Wherein, fluorescent tube 220 is to be disposed at framework interior 210.In addition, transparent panel 230 is to be disposed on the framework 210, and transparent panel 230 has a plurality of grooves 232, and more near fluorescent tube 220 tops, the groove 232 on the transparent panel 230 distributes intensive more.Compared to above-mentioned down straight aphototropism mode set 100 (as shown in Figure 1) with diffusion sheet 130, should existing known down straight aphototropism mode set 200 have the homogeneity of preferable light source, yet on transparent panel 230, make the groove 232 of distribution kenel and be not easy, moreover the variability of groove 232 sizes can influence the homogeneity of light source.
This shows that above-mentioned existing down straight aphototropism mode set still has many defectives, and demands urgently further being improved.In order to solve the problem that down straight aphototropism mode set exists, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, and this obviously is the problem that the anxious desire of relevant dealer solves.
Because the defective that above-mentioned existing down straight aphototropism mode set exists, the inventor is based on being engaged in this type of product design manufacturing abundant for many years practical experience and professional knowledge, actively studied innovation, in the hope of founding a kind of novel down straight aphototropism mode set, can improve existing down straight aphototropism mode set, make it have more practicality.Through constantly research, design, and after studying sample and improvement repeatedly, create the present invention who has practical value finally.
Summary of the invention
The objective of the invention is to, overcome the defective that existing down straight aphototropism mode set exists, and a kind of down straight aphototropism mode set of new structure is provided, technical matters to be solved is to make it have preferable light source homogeneity, thereby be suitable for practicality more, and have the value on the industry.
The object of the invention to solve the technical problems realizes by the following technical solutions.A kind of down straight aphototropism mode set according to the present invention proposes is applicable to a LCD, and this down straight aphototropism mode set comprises: a framework; A most fluorescent tube are disposed in this framework; And a light control layer, be distributed at least on the zone of those fluorescent tubes tops, to control the light intensity of those fluorescent tubes on each light exit direction respectively.
The object of the invention to solve the technical problems also can be applied to the following technical measures to achieve further.
Aforesaid down straight aphototropism mode set, wherein said light control layer comprise most frame shape patterns.
Aforesaid down straight aphototropism mode set, wherein said light control layer comprise most point-like array patterns.
Aforesaid down straight aphototropism mode set, wherein said light control layer comprise most palisade patterns.
Aforesaid down straight aphototropism mode set, wherein said light control layer comprise most net-like patterns.
Aforesaid down straight aphototropism mode set, wherein said light control layer more comprise on the zone that is distributed in contiguous those fluorescent tube tops.
Aforesaid down straight aphototropism mode set, wherein said light control layer comprise that most cover pattern, and those density of covering pattern are to keep necessarily.
Aforesaid down straight aphototropism mode set, wherein said light control layer comprise that most cover pattern, and those density of covering pattern are to cover the position at pattern place and change along with those.
The present invention compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, in order to reach aforementioned goal of the invention, the present invention proposes a kind of down straight aphototropism mode set, and it is applicable to a LCD, and down straight aphototropism mode set for example comprises a framework, a plurality of fluorescent tube and a light control layer.Wherein, these fluorescent tubes are to be disposed in the framework.In addition, light control layer is distributed on the zone of these fluorescent tube tops, to control the light intensity of fluorescent tube on each light exit direction respectively at least.
According to the described down straight aphototropism mode set of preferred embodiment of the present invention, above-mentioned light control layer for example comprises a plurality of frame shape patterns.
According to the described down straight aphototropism mode set of preferred embodiment of the present invention, above-mentioned light control layer for example comprises a plurality of point-like arrays (array) pattern.
According to the described down straight aphototropism mode set of preferred embodiment of the present invention, above-mentioned light control layer for example comprises a plurality of palisade patterns.
According to the described down straight aphototropism mode set of preferred embodiment of the present invention, above-mentioned light control layer for example comprises a plurality of net-like patterns.
According to the described down straight aphototropism mode set of preferred embodiment of the present invention, above-mentioned light control layer for example more comprises on the zone that is distributed in the adjacent lamp tube top.
According to the described down straight aphototropism mode set of preferred embodiment of the present invention, above-mentioned light control layer for example comprises a plurality of patterns that cover, and these density of covering pattern are to keep necessarily.
According to the described down straight aphototropism mode set of preferred embodiment of the present invention, above-mentioned light control layer for example comprises a plurality of patterns that cover, and these density of covering pattern are to change along with the position of covering the pattern place.
Via as can be known above-mentioned, the invention relates to a kind of down straight aphototropism mode set, be applicable to a LCD, this down straight aphototropism mode set for example comprises a framework, a plurality of fluorescent tube and a light control layer.Wherein, these fluorescent tubes are to be disposed in the framework.In addition, light control layer is distributed on the zone of fluorescent tube top at least.Owing to light control layer is covered in the fluorescent tube top, to control the light intensity of fluorescent tube on each light exit direction respectively, so this down straight aphototropism mode set has preferable light source homogeneity.
By technique scheme, down straight aphototropism mode set of the present invention has following advantage at least:
One, down straight aphototropism mode set of the present invention has light control layer, and light control layer is to be positioned at the fluorescent tube top, to control the light intensity of fluorescent tube on each light exit direction respectively, so for existing known down straight aphototropism mode set, down straight aphototropism mode set of the present invention has preferable light source homogeneity.In addition, light control layer more can be distributed on the zone of adjacent lamp tube top, and can obtain preferable shaded effect, and more can be utilized (recycle) once more by the light that light control layer reflected, to become display light source.
Two, in down straight aphototropism mode set of the present invention, the user can directly form light control layer or light control layer is being covered on the flat board on the flat board.Therefore, compared to existing known down straight aphototropism mode set with groove, light control layer of the present invention has makes easy advantage.
Three, in down straight aphototropism mode set of the present invention, carry out optimality analysis at the homogeneity of light source and the arranging density, allocation position and the area that cover pattern, distribute and obtain a preferable arranged in patterns of covering, more can obtain preferable area source display effect.
Four, in down straight aphototropism mode set of the present invention, light control layer can be disposed on the diffuser plate or on the more cheap transparent panel, all can reach purpose of the present invention.
In sum, the down straight aphototropism mode set of special construction of the present invention has light control layer, and light control layer is to be disposed at the fluorescent tube top at least, therefore compared to existing down straight aphototropism mode set, down straight aphototropism mode set of the present invention has preferable light source homogeneity, and compared to the mode of prior art use groove, the then easier making of light control layer.It has above-mentioned plurality of advantages and practical value, and in like product, do not see have similar structural design to publish or use and really genus innovation, no matter it structurally or bigger improvement all arranged on the function, have large improvement technically, and produced handy and practical effect, and more existing down straight aphototropism mode set has the multinomial effect of enhancement, thus be suitable for practicality more, and have the extensive value of industry, really be a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solution of the present invention, for can clearer understanding technological means of the present invention, and can be implemented according to the content of instructions, below with preferred embodiment of the present invention and conjunction with figs. describe in detail as after.
Description of drawings
Fig. 1 is the synoptic diagram that has known down straight aphototropism mode set now.
Fig. 2 is another synoptic diagram that has known down straight aphototropism mode set now.
Fig. 3 is overlooking and diagrammatic cross-section according to the down straight aphototropism mode set of preferred embodiment of the present invention.
Fig. 4 is the diagrammatic cross-section according to the down straight aphototropism mode set of another preferred embodiment of the present invention.
Fig. 5 A to Fig. 5 D is respectively the vertical view of frame shape pattern, palisade pattern, point-like array pattern and net-like pattern.
Fig. 6 is overlooking and diagrammatic cross-section according to the down straight aphototropism mode set of the another preferred embodiment of the present invention.
100,200: existing known down straight aphototropism mode set 110,210,310: framework
120,220,320: fluorescent tube 130: diffuser plate
230: transparent panel 232: groove
300,400: down straight aphototropism mode set (module) 330: flat board
340,440: light control layer 342a: first photic zone
342b: second photic zone 350: blooming piece
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, to its embodiment of down straight aphototropism mode set, structure, feature and the effect thereof that foundation the present invention proposes, describe in detail as after.
Seeing also Fig. 3, is overlooking and diagrammatic cross-section according to the down straight aphototropism mode set of preferred embodiment of the present invention.The down straight aphototropism mode set 300 of preferred embodiment of the present invention is applicable to a LCD, and this down straight aphototropism mode set 300 for example comprises a framework 310, a plurality of fluorescent tube 320 and a light control layer 340.Wherein, fluorescent tube 320 is to be disposed in the framework 310, and light control layer 340 is to be disposed at fluorescent tube 320 tops, to control the light intensity of fluorescent tube 320 on each light exit direction respectively.It should be noted that, compared to prior art is the top (as shown in Figure 2) that groove 232 is disposed at fluorescent tube 220, to improve the light source homogeneity, the light control layer 340 of present embodiment more can reduce the shown luminosity in fluorescent tube top, to improve the homogeneity of light source.In addition, when part light reflected by light control layer 340 or scattering after, this part light can be utilized once more (recycle) for example light by framework 310 reflections, to become display light source.
Seeing also shown in Figure 4ly, is the diagrammatic cross-section according to the down straight aphototropism mode set of another preferred embodiment of the present invention.Present embodiment is similar to the aforementioned embodiment, and its difference is: the down straight aphototropism mode set of present embodiment more comprises dull and stereotyped 330 and one blooming piece 350.Wherein, fluorescent tube 320 is to be disposed in the framework 310, and flat board 330 is to be disposed on the framework 310.In addition, light control layer 340 is to be disposed on the flat board 330 of fluorescent tube 320 tops, and blooming piece 350 is to be disposed on dull and stereotyped 330, and covers light control layer 340.Compared to prior art groove 232 is disposed at the top (as shown in Figure 2) of fluorescent tube 220, the light control layer 340 of present embodiment more can be controlled the light intensity of 320 fluorescent tubes on each light exit direction with the combination of blooming piece 350.Moreover the light that is reflected by light control layer 340 can reflect by framework 310 once more, and becomes display light source.
From the above, framework 310 for example comprises by reflection ray material, diffusion material, or part diffusion partial reflection material constitutes.Perhaps, at the framework 310 inner reflector layer (not shown) that form.In addition, fluorescent tube 320 for example comprises that (Cold Cathode FluorescenceLamp, CCFL) or light emitting diode matrix (array), and fluorescent tube 320 for example comprises linear pattern fluorescent tube or U type fluorescent tube to the cold cathode fluorescent lamp pipe.In addition, dull and stereotyped 330 for example comprise diffuser plate or transparent panel, and blooming piece 350 for example comprises diffusion sheet or brightening piece, and blooming piece 350 can improve the light source display effect.Moreover light control layer 340 for example comprises a plurality of frame shape patterns, a plurality of point-like array pattern, a plurality of palisade pattern or a plurality of net-like pattern, and above-mentioned various patterns can adopt the mode of mode, etching mode or the attaching of printing to be made on dull and stereotyped 330.For above-mentioned various patterns, existing it is described in detail as after.
Seeing also shown in Fig. 5 A to Fig. 5 D, is respectively the vertical view of frame shape pattern, palisade pattern, point-like array pattern and net-like pattern.Frame shape pattern (shown in Fig. 5 A) for example comprises first area 342a and second area 342b, and the transmittance of first area 342a is greater than the transmittance of second area 342b, two kinds of kenels such as wherein second area 342b is for example light tight or semi-transparent.In addition, palisade pattern (shown in Fig. 5 B), point-like array pattern (shown in Fig. 5 C) all have first area 342a and second area 342b with net-like pattern (shown in Fig. 5 D), and the transmittance of first area 342a is greater than the transmittance of second area 342b, two kinds of kenels such as wherein second area 342b is for example light tight or semi-transparent.In addition, in Fig. 5 A to Fig. 5 D, the arranging density of frame shape pattern, point-like array pattern, palisade pattern and net-like pattern is to keep necessarily, need not keep necessarily but the present invention does not limit arranging density.Light control layer 340 that it should be noted that Fig. 4 does not limit on the flat board 330 that is disposed at fluorescent tube 320 tops.
Seeing also shown in Figure 6ly, is overlooking and diagrammatic cross-section according to the down straight aphototropism mode set 400 of the another preferred embodiment of the present invention.Present embodiment is similar to embodiment shown in Figure 4, its difference is: the light control layer 440 of present embodiment is to be distributed on the zone of adjacent lamp tube 320 tops, and light control layer 440 comprises a plurality of patterns that cover, and for example comprises frame shape pattern, point-like array pattern, palisade pattern, net-like pattern or other light-shielding pattern and cover pattern.In addition, the flat board 330 of present embodiment or blooming piece 350 are the selectivity member.
What deserves to be mentioned is, in above-mentioned light control layer 440, cover the effect of the arrangement mode decision shading of pattern, therefore the arranging density that the arrangement mode that covers pattern for example covers pattern is that the density keeping certain (shown in Fig. 5 A to Fig. 5 D), cover pattern is to change (arranging density that covers pattern of middle body that for example covers light control layer 440 zones is bigger, and is successively decreased (shown in magnification region) to two side areas by middle section) along with the position of covering the pattern place or alternate manner changes the arranging density that this covers pattern.
Especially, if carry out optimality analysis with the arranging density, allocation position and the area that cover pattern, then can obtain a preferable arranging density that covers pattern and distribute for the homogeneity of light source.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention, any those skilled in the art, in not breaking away from the technical solution of the present invention scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solution of the present invention, according to technical spirit of the present invention to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solution of the present invention.
Claims (8)
1, a kind of down straight aphototropism mode set is applicable to a LCD, it is characterized in that this down straight aphototropism mode set comprises:
One framework;
A most fluorescent tube are disposed in this framework; And
One light control layer is distributed on the zone of those fluorescent tube tops, to control the light intensity of those fluorescent tubes on each light exit direction respectively at least.
2, down straight aphototropism mode set according to claim 1 is characterized in that wherein said light control layer comprises most frame shape patterns.
3, down straight aphototropism mode set according to claim 1 is characterized in that wherein said light control layer comprises most point-like array patterns.
4, down straight aphototropism mode set according to claim 1 is characterized in that wherein said light control layer comprises most palisade patterns.
5, down straight aphototropism mode set according to claim 1 is characterized in that wherein said light control layer comprises most net-like patterns.
6, down straight aphototropism mode set according to claim 1 is characterized in that wherein said light control layer more comprises on the zone that is distributed in contiguous those fluorescent tube tops.
7, down straight aphototropism mode set according to claim 1 it is characterized in that wherein said light control layer comprises that most cover pattern, and those density of covering pattern is to keep necessarily.
8, down straight aphototropism mode set according to claim 1 is characterized in that wherein said light control layer comprises that most cover pattern, and those density of covering pattern are to cover the position at pattern place and change along with those.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410000261 CN1641430A (en) | 2004-01-12 | 2004-01-12 | Straight-down back light module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410000261 CN1641430A (en) | 2004-01-12 | 2004-01-12 | Straight-down back light module |
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| Publication Number | Publication Date |
|---|---|
| CN1641430A true CN1641430A (en) | 2005-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410000261 Pending CN1641430A (en) | 2004-01-12 | 2004-01-12 | Straight-down back light module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102454925A (en) * | 2011-05-11 | 2012-05-16 | 昆山市诚泰电气股份有限公司 | Light-emitting diode (LED) flat lamp |
| CN101765738B (en) * | 2007-09-13 | 2012-05-30 | 夏普株式会社 | Backlight device and display device |
-
2004
- 2004-01-12 CN CN 200410000261 patent/CN1641430A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101765738B (en) * | 2007-09-13 | 2012-05-30 | 夏普株式会社 | Backlight device and display device |
| CN102454925A (en) * | 2011-05-11 | 2012-05-16 | 昆山市诚泰电气股份有限公司 | Light-emitting diode (LED) flat lamp |
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