CN1790129A - Direct type spot light source backlight module and liquid crystal display employing the same - Google Patents
Direct type spot light source backlight module and liquid crystal display employing the same Download PDFInfo
- Publication number
- CN1790129A CN1790129A CN 200410102115 CN200410102115A CN1790129A CN 1790129 A CN1790129 A CN 1790129A CN 200410102115 CN200410102115 CN 200410102115 CN 200410102115 A CN200410102115 A CN 200410102115A CN 1790129 A CN1790129 A CN 1790129A
- Authority
- CN
- China
- Prior art keywords
- pointolite
- site
- backlight assembly
- straight
- random number
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Planar Illumination Modules (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a vertical point-source aphototropism component and LCD, which consists of LCD panel and display case, wherein the panel contains two base plates of liquid crystal material in the middle and aphototropism component under the LCD panel; the display case contains the LCD panel and aphototropism component; the aphototropism component displays vertical point-source aphototropism component, which concludes several point-sources, reflective board, diffusing plate and several layers of optical film; the reflective plate contains several opening holes; each opening hole corresponds to the point-source, which makes the ray of point-source pierces the opening hole to illuminate the diffusion plate completely; several mesh points of radial random number with a central point is allocated on the diffusion plate; at least one point-source corresponds to the mesh point center of radial random number.
Description
Technical field
The present invention relates to a kind of pointolite backlight assembly, particularly the straight-down negative pointolite backlight assembly of LCD.
Background technology
As shown in Figure 1, it shows the structure of known LCD (LCD) device.Generally speaking, above-mentioned LCD device comprises a panel of LCD 10, and the two substrates, that is provided with liquid crystal material in the middle of it comprises is disposed at backlight assembly 20 and shell 11 and 12 of the below of above-mentioned panel of LCD 10.
Dispose above-mentioned backlight assembly 20,, be dispensed to uniformly on the surface of above-mentioned liquid crystal panel 10 with the light that a light source is sent.Being used for backlight liquid crystal display assembly 20 generally can be divided into: directly descend light source pattern and edge light pattern.
With reference to figure 2, it shows a kind of direct type backlight assembly 21, along the cross section view of Fig. 1 section line 2-2.Above-mentioned direct type backlight assembly 21 comprises a shell 70, and it has one and is disposed at the reflector plate 60 of its lower surface, and the fluorescent tube 50 such as the class of cold-cathode tube that is positioned at its bottom; One is positioned at the diffusion sheet 40 on the above-mentioned shell 70 and is disposed at prismatic lens 30 on the above-mentioned diffusion sheet 40.
With reference to figure 3, it shows a kind of side type backlight assembly 22, along the cross section view of Fig. 1 section line 2-2.Above-mentioned side type backlight assembly 22 comprises that a light guide plate 80, is installed in the fluorescent tube 50 and the U-shaped reverberator 61 around above-mentioned fluorescent tube 50 of at least one side of above-mentioned light guide plate 80.One opening portion of above-mentioned reverberator 61 is fixed in the side of above-mentioned light guide plate 80, and a reflector plate 60 is fixed in the bottom of above-mentioned light guide plate 80, and a diffusion sheet 40 is fixed on the above-mentioned light guide plate 80, and prismatic lens 30 is fixed on the above-mentioned diffusion sheet 40.Because above-mentioned fluorescent tube 50 is disposed at the edge of above-mentioned light guide plate 80, so the thickness of above-mentioned LCD just is minimized.
Compare with the side type backlight assembly, the advantage of direct type backlight assembly is the brightness height, and light going direction directly enters the viewing area, and the loss that must light guide plate produce light intensity is because of must not light guide plate, so can reduce cost.Yet known straight-down negative cold-cathode tube (CCFL) backlight assembly still has following problem:
1. color saturation is not good: red (R), green (G), the optical spectrum of blue three looks excessive such as (B), and present colored filter (color filter) can't leach very pure coloured light (Fig. 4), the colour gamut of about 72%NTSC standard (color gamma);
2. the reaction time is slow: the reaction time, it was the relation that is subject to lamp luminescence mechanism greater than several milliseconds (mini second);
3. be subjected to external temperature influence big: cold-cathode tube (CCFL) has best luminescence efficiency below specified temp, its light is sent out efficient and is subjected to the influence of environment temperature very big;
4. high voltage drive: cold-cathode tube (CCFL) driving voltage is greater than 1000V; And
5. do not meet the environmental protection demand: cold-cathode tube (CCFL) uses mercury.
Therefore the dealer develops straight-down negative light emitting diode (LED) backlight assembly, to address the above problem.Compare with straight-down negative cold-cathode tube (CCFL) backlight assembly, the advantage of straight-down negative light emitting diode (LED) backlight assembly is:
1. colour gamut (color gamma) is big: red (R), green (G), the optical spectrum of blue three looks more concentrated such as (B), and present colored filter (color filter) very easily leaches very pure coloured light (Fig. 5), the colour gamut of about 100% NTSC standard (color gamma);
2. the reaction time is fast: the reaction time is greater than several nanoseconds (nano second);
3. be not subjected to external temperature influence;
4. low driving voltage: the driving voltage of red light-emitting diode (LED) is 2~3V, and driving voltage blue, green light LED (LED) is 3~5V; And
5. meet the environmental protection demand: light emitting diode (LED) need not use mercury.
In view of this, straight-down negative light emitting diode (LED) backlight assembly had become the main trend of LCD (LCD) device already.
Hence one can see that, and straight-down negative cold-cathode tube (CCFL) backlight assembly is a kind of line source.The present invention is used in the light source of straight-down negative cold-cathode tube (CCFL) backlight assembly except that improving, also improve the diffuser plate of straight-down negative cold-cathode tube (CCFL) backlight assembly, become and use straight-down negative light emitting diode (LED) backlight assembly that diffuser plate constituted of light emitting diode (LED) as a pointolite and a radial random-number distribution site.In addition, the present invention also can use mercury lamp or Halogen lamp LED to add the diffuser plate etc. of a radial random-number distribution site as pointolite, constitutes straight-down negative mercury lamp backlight assembly or straight-down negative Halogen lamp LED backlight assembly.
Summary of the invention
Purpose of the present invention provides a kind of LCD, and this LCD comprises: a panel of LCD, wherein above-mentioned panel comprise that therebetween establishes the two substrates of a liquid crystal material; One is disposed at the backlight assembly of the below of above-mentioned panel of LCD; An and display casing that includes above-mentioned panel of LCD and above-mentioned backlight assembly; Wherein above-mentioned backlight assembly is a kind of straight-down negative pointolite backlight assembly, to replace present employed straight-down negative cold-cathode tube (CCFL) backlight assembly.
For achieving the above object, invent a straight-down negative pointolite backlight assembly, this straight-down negative pointolite backlight assembly comprises: a plurality of pointolites; One reflecting plate, said reflection plate have a plurality of perforates, and each perforate is corresponding to corresponding pointolite; One diffuser plate, above-mentioned diffuser plate have a plurality of radial random-number distribution site; Wherein at least one pointolite is corresponding to the center of radial random-number distribution site.Above-mentioned straight-down negative pointolite backlight assembly, wherein above-mentioned a plurality of pointolites comprise light emitting diode (LED), mercury lamp, Halogen lamp LED.Center, above-mentioned radial random number site control area screening rate is that the density of network point changes site centrifugal direction spacing and tangential direction spacing, the size that cooperates the site radial distance is again controlled the screening rate and the some position of its relative area and is done the random-number distribution processing.So radial random number network point distribution is that nearly above-mentioned pointolite place is close or diameter is big, above-mentioned pointolite far away place is thin or diameter is little; And above-mentioned radial random number site comprises: the composite combined of single-point, multiple spot or single multiple spot; Moreover above-mentioned radial random number site is disposed at upper surface or the lower surface or the part upper surface portion lower surface of above-mentioned diffuser plate; Above-mentioned radial random number site comprises that salient point, groove or part salient point part groove complex method are disposed on the diffuser plate.Above-mentioned diffuser plate is to be made by printing opacity or semi transparent material, be selected from as glass, acryl resin (Acrylic Resin), PMMA (polymethyl acrylate), PC (polycarbonate) Arton (armorphous polyolefin (JSR company development product)) and PET materials such as (polyester).Above-mentioned radial random number site is a reflecting material, is selected from titanium sub-group compound, silicon based compound and barium sulphate etc.
According to purpose of the present invention, a kind of method for making of straight-down negative pointolite backlight assembly, said method comprises step: form a plurality of pointolites; Formation one has the reflecting plate of a plurality of perforates, and each perforate is corresponding to corresponding pointolite; Form a diffuser plate, a plurality of radial random-number distribution of configuration site on above-mentioned diffuser plate; Wherein at least one pointolite is corresponding to the center of above-mentioned radial random-number distribution site; Wherein above-mentioned a plurality of pointolites comprise light emitting diode (LED), mercury lamp, Halogen lamp LED.Above-mentioned radial random number network point distribution is that nearly above-mentioned pointolite place is close or diameter is big, and above-mentioned pointolite far away place is thin or diameter is little; Above-mentioned radial random number site comprises: the composite combined of single-point, multiple spot or single multiple spot; And above-mentioned radial random number site is disposed at upper surface or the lower surface or the part upper surface portion lower surface of above-mentioned diffuser plate.Above-mentioned diffuser plate is to be made by printing opacity or semi transparent material, is selected from as glass acryl resin (Acrylic Resin), PMMA (polymethyl acrylate), PC (polycarbonate), Arton (armorphous polyolefin) and PET materials such as (polyester); Wherein above-mentioned radial random number site is a reflecting material, is selected from titanium sub-group compound, silicon based compound and barium sulphate etc.; And salient point is printed on diffuser plate via mesh in radial random number site.Wherein above-mentioned diffuser plate is molded as and has salient point or groove, again in salient point or the printing of groove mesh or apply above-mentioned site.
In order to make above and other objects of the present invention, feature and the advantage can be more obvious, preferred embodiment of the present invention cited below particularly, and in conjunction with the accompanying drawings, be described in detail below:
Description of drawings
Fig. 1 is the volume rendering expansion synoptic diagram according to the LCD of prior art.
Fig. 2 is the diagrammatic cross-section according to the direct type backlight assembly of prior art.
Fig. 3 is the diagrammatic cross-section according to the side type backlight assembly of prior art.
Fig. 4 is the optical spectrum according to straight-down negative cold-cathode tube backlight assembly.
Fig. 5 is the optical spectrum according to straight-down negative light emitting diode (LED) backlight assembly.
Fig. 6 is the LCD part synoptic diagram of the straight-down negative pointolite backlight assembly of the application embodiment of the invention.
Fig. 7,8 is the synoptic diagram according to the straight-down negative pointolite backlight assembly of the embodiment of the invention.
Fig. 9 (a)~(f) is the radial random number network point distribution according to the unit, radial random number site of the embodiment of the invention.
Figure 10 (a) is the distribution schematic diagram of the radial random number of the single-point site according to the present invention.
Figure 10 (b) is the distribution schematic diagram of the radial random number of the multiple spot site according to the present invention.
The reference numeral explanation:
10 panel of LCD, 11 shells
12 shells, 20 backlight assemblies
21 direct type backlight assemblies, 22 side type backlight assemblies
30 prismatic lenses, 40 diffusion sheets
50 fluorescent tubes, 80 light guide plate
100 LCD, 110 panel of LCD
112 transparency carriers, 114 transparency carriers
116 liquid crystal materials, 150,250 pointolites
120,220 straight-down negative pointolite backlight assemblies
160 reflecting plates
162,262 reflecting plate perforates, 180,280 diffuser plates
182,282a unit center site, 282 site
Center, 290 radial random number site
Unit, 292 radial random number site
Embodiment
The LCD 100 part synoptic diagram of Fig. 6 for using backlight assembly 120 of the present invention.Above-mentioned LCD 100 comprises a panel of LCD 110 and a backlight assembly 120.Above-mentioned panel of LCD 110 has two transparency carriers 112,114, and liquid crystal material 116 is disposed at wherein.Above-mentioned backlight assembly 120 is straight-down negative pointolite backlight assemblies, and acting as provides a light supply apparatus, is used for whole viewing area, launches light uniformly and illuminates above-mentioned panel of LCD 110.Above-mentioned backlight assembly comprises the blooming of a plurality of pointolites 150, a reflecting plate 160, a diffuser plate 180 and multilayer.
Reflecting plate 160 has a plurality of reflecting plate perforates 162, each reflecting plate perforate 162 is corresponding to corresponding pointolite 150, the irradiation the diffuser plate 180 so that light of pointolite 150 is passed through said reflection plate perforate 162 fully, after the light that is reflected by diffuser plate 180 returns reflecting plate 160, reflex to diffuser plate 180 again.According to the pointolite 150 of different kenels, reflecting plate 160 can be arranged at the top of pointolite 150, and below or same surface level only need make the light of pointolite 150 be passed through above-mentioned perforate 162 fully and irradiation diffuser plate 180.And see through this diffuser plate 180 and make the beam split reflection of part light breakthrough portion, above-mentioned reflected light reflexes to the diffuser plate 180 of radial random number network point distribution again through reflecting plate, utilizes again to promote the uniformity coefficient (uniformity) of overall region again.
Fig. 7 is the synoptic diagram of straight-down negative pointolite backlight assembly 220 according to an embodiment of the invention.Above-mentioned straight-down negative pointolite backlight assembly 220 comprises a plurality of pointolites 250, one reflecting plate 260 has a plurality of reflecting plate perforates 262, one diffuser plate 280 has a plurality of radial random numbers site 282 and distributes on it, the above-mentioned distribution of radial random number site 282 on diffuser plate 280 simultaneously must have center, a plurality of radial random number site 290, suppose that a pointolite 250 is corresponding to the light intensity distributions inequality of center, a radial random number site 290 because of pointolite 250, a little less than the middle strong next door, institute thinks solution light emitting source strength distribution inequality, the present invention designs radial random number site 282 and is distributed with center, a radial random number site 290 with high light place in the middle of suppressing, so radial random number network point distribution is that nearly above-mentioned pointolite place is close or diameter is big, above-mentioned pointolite far away place is thin or diameter is little, promptly be the density change site centrifugal direction spacing and the tangential direction spacing of network point with center, radial random number site 290 control area screening rates, the size that cooperates the site radial distance is again controlled the screening rate and the some position of its relative area and is done the random-number distribution processing.
The foregoing description is that a pointolite 250 is example corresponding to center, a radial random number site 290, and the present invention also is applicable to a plurality of pointolites 250 corresponding to center, a radial random number site 290, as shown in Figure 8.Wherein above-mentioned a plurality of pointolite 250 comprises light emitting diode (LED), mercury lamp, Halogen lamp LED; And above-mentioned radial random number site 282 is disposed at upper surface or the lower surface or the part upper surface portion lower surface of above-mentioned diffuser plate 280; Above-mentioned radial random number site 282 comprises that salient point, groove or part salient point part groove complex method are disposed on the diffuser plate 280.Above-mentioned diffuser plate 280 is to be made by printing opacity or semi transparent material, is selected from as glass acryl resin (Acrylic Resin), PMMA (polymethyl acrylate), PC (polycarbonate), Aront (armorphous polyolefin) and PET materials such as (polyester).Above-mentioned radial random number site 282 is a reflecting material, is selected from titanium compound, silicon based compound and barium sulphate etc.
Fig. 9 (a)~(f) is the radial random number network point distribution according to the unit, radial random number site of the embodiment of the invention.Radial random number site 282 above-mentioned shown in Fig. 9 (a) only has a radial random number site 282 in a scheduled unit area 292 (the square unit as 0.1~1.2mm).With shown in 9 (f), it has two radial random number sites 282 in a scheduled unit area 292 as Fig. 9 (b), and wherein two radial random number sites 282 can be connected as Fig. 9 (b) or separately as Fig. 9 (f).Shown in Fig. 9 (c)-9 (e), it has a plurality of radial random numbers site 282 a unit center site 282a is wherein arranged in a scheduled unit area 292, and remaining a plurality of radial random numbers site disposes around this element center site 282a.So can get, the composite combined of radial random number site, multiple spot or single multiple spot of single-point is shown in Figure 10 (a)-10 (b).
Though the present invention discloses with above-mentioned preferred embodiment, so it is not that any those skilled in the art without departing from the spirit and scope of the present invention, can do various changes and modification certainly in order to qualification the present invention.Therefore protection scope of the present invention should be with being as the criterion that the claim scope is defined.
Claims (25)
1. straight-down negative pointolite backlight assembly comprises:
A plurality of pointolites;
One reflecting plate, this reflecting plate has a plurality of perforates, and each perforate is corresponding to corresponding pointolite;
One diffuser plate, this diffuser plate have a plurality of radial random-number distribution site;
Wherein at least one pointolite is corresponding to the center of this radial random-number distribution site.
2. straight-down negative pointolite backlight assembly as claimed in claim 1 is characterized in that: these a plurality of pointolites are to be selected from by light emitting diode (LED), mercury lamp, and the group formed of Halogen lamp LED.
3. straight-down negative pointolite backlight assembly as claimed in claim 1 is characterized in that: this radial random number network point distribution is that nearly this pointolite place is close or diameter is big, far this pointolite place dredge or diameter little.
4. straight-down negative pointolite backlight assembly as claimed in claim 1 is characterized in that: this radial random number site comprises in the square unit of 0.1~1.2mm: the composite combined of single-point, multiple spot or single multiple spot.
5. straight-down negative pointolite backlight assembly as claimed in claim 4, it is characterized in that: these many sites in the square unit of 0.1~1.2mm, this radial random number site have a unit center site, and remaining a plurality of radial random numbers site disposes around site, this element center.
6. straight-down negative pointolite backlight assembly as claimed in claim 1 is characterized in that: this radial random number site is disposed at upper surface or the lower surface or the part upper surface portion lower surface of this diffuser plate.
7. straight-down negative pointolite backlight assembly as claimed in claim 1 is characterized in that: this radial random number site is that the assembly of being made up of salient point, groove or part salient point part groove complex method is placed on the diffuser plate.
8. straight-down negative pointolite backlight assembly as claimed in claim 1 is characterized in that: this diffuser plate is to be made by printing opacity or semi transparent material, is selected from by glass acryl resin, polymethyl acrylate, polycarbonate, the group that Arton and polyester are formed.
9. straight-down negative pointolite backlight assembly as claimed in claim 1 is characterized in that: this radial random number site is a reflecting material, is to be selected from by titanium sub-group compound, the group that silicon based compound and barium sulphate are formed.
10. the method for making of a straight-down negative pointolite backlight assembly, the method comprising the steps of:
Form a plurality of pointolites;
Formation one has the reflecting plate of a plurality of perforates, and each perforate is corresponding to corresponding pointolite;
Form a diffuser plate, a plurality of radial random-number distribution of configuration site on this diffuser plate;
Wherein at least one pointolite is corresponding to the center of this radial random-number distribution site.
11. as the method for making of the straight-down negative pointolite backlight assembly of claim 10, it is characterized in that: these a plurality of pointolites are to be selected from the group of being made up of light emitting diode (LED), mercury lamp, Halogen lamp LED.
12. the method for making as the straight-down negative pointolite backlight assembly of claim 10 is characterized in that: this radial random number network point distribution is that nearly this pointolite place is close or diameter is big, far this pointolite place dredge or diameter little.
13. as the method for making of the straight-down negative pointolite backlight assembly of claim 10, it is characterized in that: this radial random number site comprises in the square unit of 0.1~1.2mm: the composite combined of single-point, multiple spot or single multiple spot.
14. method for making as the straight-down negative pointolite backlight assembly of claim 13, it is characterized in that: these many sites in the square unit of 0.1~1.2mm, this radial random number site have a unit center site, and remaining a plurality of radial random numbers site disposes around site, this element center.
15. as the method for making of the straight-down negative pointolite backlight assembly of claim 10, it is characterized in that: this radial random number site is disposed at upper surface or the lower surface or the part upper surface portion lower surface of this diffuser plate.
16. as the method for making of the straight-down negative pointolite backlight assembly of claim 10, it is characterized in that: this diffuser plate is to be made by printing opacity or semi transparent material, is selected from by glass, acryl resin, polymethyl acrylate, polycarbonate, the group that Arton and polyester are formed.
17. as the method for making of the straight-down negative pointolite backlight assembly of claim 10, it is characterized in that: this radial random number site is a reflecting material, is to be selected from by titanium sub-group compound, the group that silicon based compound and barium sulphate are formed.
18. the method for making as the straight-down negative pointolite backlight assembly of claim 10 is characterized in that: this radial random number site be via mesh printing salient point on diffuser plate.
19. the method for making as the straight-down negative pointolite backlight assembly of claim 10 is characterized in that: this diffuser plate is molded as has salient point or groove, mesh printing or apply this site on salient point or groove again.
20. a LCD comprises:
One panel of LCD, wherein this panel comprises that therebetween establishes the two substrates of a liquid crystal material;
One is disposed at the backlight assembly of the below of this panel of LCD; And
One includes the display casing of this panel of LCD and this backlight assembly;
Wherein this backlight assembly is a straight-down negative pointolite backlight assembly, comprising:
A plurality of pointolites;
One reflecting plate, this reflecting plate has a plurality of perforates, and each perforate is corresponding to corresponding pointolite;
One diffuser plate, this diffuser plate have a plurality of radial random-number distribution site;
Wherein at least one pointolite is corresponding to the center of this radial random-number distribution site.
21. the LCD as claim 20 is characterized in that: these a plurality of pointolites are to be selected from by light emitting diode (LED), mercury lamp, and the group formed of Halogen lamp LED.
22. the LCD as claim 20 is characterized in that: this radial random number network point distribution is close or diameter is big near this pointolite place, away from this pointolite place dredge or diameter little.
23. the LCD as claim 20 is characterized in that: this radial random number site comprises in the square unit of 0.1~1.2mm: the composite combined of single-point, multiple spot or single multiple spot.
24. the LCD as claim 23 is characterized in that: these many sites in the square unit of 0.1~1.2mm, this radial random number site have a unit center site, and remaining a plurality of radial random numbers site disposes around site, this element center.
25. the straight-down negative pointolite backlight assembly as claim 20 is characterized in that: this radial random number site is disposed at upper surface or the lower surface or the part upper surface portion lower surface of this diffuser plate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB2004101021158A CN100547461C (en) | 2004-12-14 | 2004-12-14 | Straight-down negative pointolite backlight assembly and use its LCD |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB2004101021158A CN100547461C (en) | 2004-12-14 | 2004-12-14 | Straight-down negative pointolite backlight assembly and use its LCD |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1790129A true CN1790129A (en) | 2006-06-21 |
CN100547461C CN100547461C (en) | 2009-10-07 |
Family
ID=36788087
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB2004101021158A Active CN100547461C (en) | 2004-12-14 | 2004-12-14 | Straight-down negative pointolite backlight assembly and use its LCD |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN100547461C (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101750665B (en) * | 2008-12-12 | 2011-09-28 | 清华大学 | Light guide plate and backlight module using same |
CN102707372A (en) * | 2012-06-28 | 2012-10-03 | 苏州佳宏光电有限公司 | Novel light guide plate |
CN102767786A (en) * | 2012-07-23 | 2012-11-07 | 冠捷显示科技(厦门)有限公司 | Diffusion plate with dot-matrix diffusion structures and backlight module utilizing same |
TWI472816B (en) * | 2013-09-11 | 2015-02-11 | Global Lighting Technologies | Light guide plate |
-
2004
- 2004-12-14 CN CNB2004101021158A patent/CN100547461C/en active Active
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101750665B (en) * | 2008-12-12 | 2011-09-28 | 清华大学 | Light guide plate and backlight module using same |
US8070345B2 (en) | 2008-12-12 | 2011-12-06 | Tsinghua University | Light guide plates and backlight module |
CN102707372A (en) * | 2012-06-28 | 2012-10-03 | 苏州佳宏光电有限公司 | Novel light guide plate |
CN102767786A (en) * | 2012-07-23 | 2012-11-07 | 冠捷显示科技(厦门)有限公司 | Diffusion plate with dot-matrix diffusion structures and backlight module utilizing same |
CN102767786B (en) * | 2012-07-23 | 2014-10-15 | 冠捷显示科技(厦门)有限公司 | Diffusion plate with dot-matrix diffusion structures and backlight module utilizing same |
TWI472816B (en) * | 2013-09-11 | 2015-02-11 | Global Lighting Technologies | Light guide plate |
Also Published As
Publication number | Publication date |
---|---|
CN100547461C (en) | 2009-10-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7152988B2 (en) | Direct point-light type backlight module and liquid crystal display using the same | |
CN1302325C (en) | Compact lighting system and display device | |
JP4807609B2 (en) | Direct type backlight module and liquid crystal display | |
CN1313874C (en) | LED back light module | |
CN1928667A (en) | Backlight unit and display device having the same | |
CN1811552A (en) | Reflective plate and liquid crystal display apparatus having the same | |
CN1797119A (en) | Lamp supporter, backlight assembly having the same, and liquid crystal display device having the same | |
CN1577470A (en) | Liquid crystal display module and driving method thereof | |
CN1896777A (en) | Two-directions light transmission reflective-transmissive prism sheet, two-directions backlight assembly, and liquid crystal display | |
CN1828710A (en) | Led backlight assembly and LCD device using same | |
CN1652164A (en) | Surface light source device and display therewith | |
CN1740864A (en) | Prism sheet of liquid crystal display and back light unit using the same | |
CN1908754A (en) | Straight down type back light component and liquid crystal display device | |
CN1558284A (en) | Backlight assembly | |
CN1837925A (en) | Backlight apparatus and liquid crystal display apparatus | |
US20110188230A1 (en) | Optical sheet and composite sheet with moire fringe, and backlight assembly having the same | |
CN101055369A (en) | Direct type backlight assembly | |
CN1320666C (en) | Light-emitting diode light source module with support piece | |
CN1773350A (en) | Liquid crystal display device | |
CN1873503A (en) | Backlight assembly for liquid crystal display device and liquid crystal display device using the same | |
US8125590B2 (en) | Optical film, backlight unit including the same and liquid crystal display device having the same | |
KR101341972B1 (en) | Lamp device within resin layer for light-guide and LCD using the same | |
CN102207566B (en) | Prism sheet, back light module unit with prism sheet and liquid crystal display (LCD) device | |
CN1854849A (en) | Liquid crystal display apparatus having a light guiding plate | |
CN100346214C (en) | Backlight modular |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant |