CN101169546A - Direct type backlight module - Google Patents
Direct type backlight module Download PDFInfo
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- CN101169546A CN101169546A CNA2006101425292A CN200610142529A CN101169546A CN 101169546 A CN101169546 A CN 101169546A CN A2006101425292 A CNA2006101425292 A CN A2006101425292A CN 200610142529 A CN200610142529 A CN 200610142529A CN 101169546 A CN101169546 A CN 101169546A
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- type backlight
- direct type
- backlight assembly
- optical sheet
- protuberance
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Abstract
The invention relates to a bottom blacklight module, which comprises a frame body, a plurality of light sources, an optical plate, and an upper frame, wherein, the frame body comprises a bottom plate and a side frame extended upwards from the side edge of the bottom plate. Light sources are arranged on the bottom plate, and the optical plate is arranged at the side frame and above the light source. The upper frame is assembled with the frame body, and the optical plate is arranged between the upper frame and the frame body. In addition, the upper frame has at least one raised part arranged above and extruded towards the optical plate, thereby reducing the deforming extent of the optical plate.
Description
Technical field
The present invention is relevant for a kind of light source assembly, and is particularly to a kind of direct type backlight assembly.
Background technology
Because the demand of display and day sharp increase, so industry drops into the development of related display with all strength.Wherein, again with cathode-ray tube (CRT) (Cathode Ray Tube) because of having excellent display quality and technology maturation, so monopolize the monitor market all the year round.Yet, recently since the rise of environmental protection notion for its energy resource consumption big with produce the bigger characteristic of radiant quantity, add that product flattening space is limited, therefore can't satisfy the market trend of market for light, thin, short, little, U.S. and low consumpting power.Therefore, have that high image quality, space utilization efficient are good, (Thin Film TransistorLiquid Crystal Display TFT-LCD) becomes the market mainstream to the Thin Film Transistor-LCD of low consumpting power, advantageous characteristic such as radiationless gradually.
With regard to Thin Film Transistor-LCD, it is made of a display panels (liquid crystaldisplay panel) and a backlight assembly (back light module).Wherein, display panels normally is made of a thin-film transistor array base-plate (thin film transistor array substrate), a colored optical filtering substrates (color filter substrate) and a liquid crystal layer that is disposed between this two substrates.Backlight assembly is in order to provide this display panels required area source, so that LCD assembly reaches the effect of demonstration.In addition, backlight assembly is distinguished into direct type backlight assembly (direct type back light module) and side incident type backlight module (side type back light module) again.Therefore compared to side incident type backlight module, direct type backlight assembly can provide the area source of higher brightness, when the brightness to light source has high requirements, adopts direct type backlight assembly usually, below known at this point direct type backlight assembly describe.
Figure 1A illustrates the diagrammatic cross-section of existing direct type backlight assembly.Please refer to Figure 1A, existing direct type backlight assembly 100 comprises a framework 110, a plurality of light source 120, a diffuser plate 130, a upper ledge 140 and at least one blooming (optical film) 150, and wherein framework 110 comprises that a base plate 112 reaches by the upwardly extending side frame 114 of the side of base plate 112.In addition, light source 120 is disposed on the base plate 112, and diffuser plate 130 is disposed on the side frame 114 with blooming 150, and is positioned at light source 120 tops.Upper ledge 140 and framework 110 assemblings, and diffuser plate 130 and blooming 150 are between upper ledge 140 and framework 110.
Figure 1B illustrates the distortion synoptic diagram of the blooming of existing direct type backlight assembly.Please refer to Figure 1B and since at present LCD towards the large scale development, so the change also relative with the size of blooming 150 of the diffuser plate 130 in the existing direct type backlight assembly 100 is big.Yet, after carrying out long-term lighting under the more harsh situation of environmental baselines such as temperature, humidity or leaving standstill, diffuser plate 130 produces various warpages and distortion with blooming 150 normal latencies such as gravity because of temperature, humidity and material itself, and then the display quality of the LCD of the existing direct type backlight assembly 100 of this kind is adopted in influence.
Summary of the invention
In view of this, the purpose of this invention is to provide a kind of direct type backlight assembly, to improve the phenomenon that blooming piece produces warpage and distortion.
In addition, another object of the present invention provides a kind of direct type backlight assembly, to improve display quality.
For reaching above-mentioned or other purposes, the present invention proposes a kind of direct type backlight assembly, and it comprises a framework, a plurality of light source, an optical sheet and a upper ledge, and wherein framework comprises that a base plate reaches by the upwardly extending side frame of the side of base plate.Light source is disposed on the base plate, and optical sheet is disposed on the side frame, and is positioned at the light source top.Upper ledge and framework assembling, and optical sheet is between upper ledge and framework.In addition, upper ledge has at least one protuberance, and it is positioned at the optical sheet top.
In one embodiment of this invention, the distance of the end face of protuberance and optical sheet is between 0 to 0.1 millimeter (mm).
In one embodiment of this invention, optical sheet has at least one groove, with ccontaining protuberance.
In one embodiment of this invention, the shape of protuberance comprises column or strip.
In one embodiment of this invention, side frame has a depression, and optical sheet is disposed on the depression.
In one embodiment of this invention, direct type backlight assembly also comprises at least one blooming, and it is disposed on the optical sheet, and protuberance is positioned at the outside of blooming.
In one embodiment of this invention, optical sheet comprises diffuser plate.
In one embodiment of this invention, light source comprises pointolite or line source.
For reaching above-mentioned or other purposes, the present invention proposes another kind of direct type backlight assembly, and it comprises a framework, a plurality of light source, an optical sheet and a upper ledge, and wherein framework comprises that a base plate reaches by the upwardly extending side frame of the side of base plate.Light source is disposed on the base plate, and optical sheet is disposed on the side frame, and is positioned at the light source top.Optical sheet has at least one protuberance.The assembling of upper ledge and framework, and optical sheet is between upper ledge and framework, and upper ledge covers protuberance.
In one embodiment of this invention, the distance of the end face of protuberance and upper ledge is between 0 to 0.1 millimeter.
In one embodiment of this invention, upper ledge has at least one groove, with ccontaining protuberance.
In one embodiment of this invention, the shape of protuberance comprises column or strip.
In one embodiment of this invention, side frame has a depression, and optical sheet is disposed on the depression.
In one embodiment of this invention, direct type backlight assembly also comprises at least one blooming, and it is disposed on the optical sheet, and protuberance is positioned at the outside of blooming.
In one embodiment of this invention, optical sheet comprises diffuser plate.
In one embodiment of this invention, light source comprises pointolite or line source.
Based on above-mentioned, dispose projection on former frame of the present invention or the optical sheet, with the warpage and the distortion of restriction optical sheet, therefore adopt the at high temperature difficult phenomenon that produces the display surface inequality of LCD of this kind direct type backlight assembly.
For above-mentioned and other purposes, feature and advantage of the present invention can be become apparent, preferred embodiment cited below particularly, and conjunction with figs. is described in detail below.
Description of drawings
Figure 1A is the diagrammatic cross-section of existing direct type backlight assembly.
Figure 1B is the distortion synoptic diagram of the blooming of existing direct type backlight assembly.
Fig. 2 is the diagrammatic cross-section of a kind of direct type backlight assembly of first embodiment of the invention.
Fig. 3 is the diagrammatic cross-section of a kind of direct type backlight assembly of second embodiment of the invention.
Fig. 4 is the diagrammatic cross-section of a kind of direct type backlight assembly of third embodiment of the invention.
Embodiment
First embodiment
Fig. 2 is the diagrammatic cross-section of a kind of direct type backlight assembly of first embodiment of the invention.Please refer to Fig. 2, the direct type backlight assembly 200 of present embodiment comprises a framework 210, a plurality of light source 220, an optical sheet 230 and a upper ledge 240, and wherein framework 210 comprises that a base plate 212 reaches by the upwardly extending side frame 214 of the side of base plate 212.In addition, light source 220 is disposed on the base plate 212, and optical sheet 230 is disposed on the side frame 214, and is positioned at light source 220 tops.In addition, upper ledge 240 and framework 210 assemblings, and optical sheet 230 is between upper ledge 240 and framework 210.It should be noted that upper ledge 240 has at least one protuberance 240a, it is positioned at optical sheet 230 tops, and protruding in optical sheet 230.
More specifically, the distance W of the end face 242a of protuberance 240a and optical sheet 230 for example is between 0 to 0.1 millimeter.In addition, the material of this protuberance 240a can be metal or plastic cement, and the shape of protuberance 240a can be column or strip.In addition, optical sheet 230 for example is a diffuser plate, and light source 220 for example is pointolite or line source.For example, line source for example is cathode fluorescent tube (Cold CathodeFluorescent Lamp, CCFL), and pointolite for example is light emitting diode (light emitting diode, LED), Organic Light Emitting Diode (organic light emitting diode, OLED) or the pointolite of other kenels.Moreover in the present embodiment, side frame 214 has a depression 214a, and optical sheet 230 is disposed on the depression 214a.Yet the present invention does not limit side frame 214 need have depression 214a.
Because protuberance 240a has suppressed the warpage and the distortion of optical sheet 230, therefore under the environment of high temperature, the deflection of optical sheet 230 can dwindle, to reduce the phenomenon that shows uneven (display mura).
Second embodiment
Fig. 3 is the diagrammatic cross-section of a kind of direct type backlight assembly of second embodiment of the invention.Please refer to Fig. 3, present embodiment is similar to first embodiment, and its difference is: in the present embodiment, optical sheet 230 has at least one groove 230a, with ccontaining protuberance 240a.In addition, the distance W of the end face 242a of protuberance 240a and groove 230a for example is between 0 to 0.1 millimeter.Therefore, the displacement of optical sheet 230 also has been subjected to the restriction of protuberance 240a, shows uneven phenomenon to improve.In addition, keep a predetermined gap between upper ledge 240 and the blooming 250.
In the present embodiment, direct type backlight assembly 200 also comprises at least one blooming 250, and it is disposed on the optical sheet 230, and protuberance 240a is positioned at the outside of blooming 250.In addition, blooming 250 for example is following diffusion sheet, light-collecting piece, goes up diffusion sheet or other diaphragms.
The 3rd embodiment
Fig. 4 is the diagrammatic cross-section of a kind of direct type backlight assembly of third embodiment of the invention.Please refer to Fig. 4, present embodiment is similar to second embodiment, and its difference is: in the direct type backlight assembly 300 of present embodiment, optical sheet 310 has at least one protuberance 310a, is positioned at the edge of optical sheet 310, and upper ledge 320 covers protuberance 310a.In addition, the shape of protuberance 310a for example is column or strip.In the present embodiment, upper ledge 320 has at least one groove 320a, with ccontaining protuberance 310a.Yet present embodiment does not limit upper ledge 320 need have groove 320a, and the upper ledge 320 that does not have a groove 320a also can be applied to (similar shown in Figure 2) in the present embodiment.
In addition, the distance W of the end face 312a of protuberance 310a and groove 320a for example is between 0 to 0.1 millimeter.Therefore, the displacement of optical sheet 310 also has been subjected to the restriction of groove 320a, to improve the phenomenon of display surface inequality.
Though the present invention discloses as above with preferred embodiment; right its is not in order to qualification the present invention, any those of ordinary skills, without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is when with being as the criterion that claim was defined.
Claims (16)
1. direct type backlight assembly comprises:
One framework comprises that a base plate reaches by the upwardly extending side frame of the side of this base plate;
A plurality of light sources are disposed on this base plate;
One optical sheet is disposed on this side frame, and is positioned at those light source tops; And
One upper ledge, with the assembling of this framework, and this optical sheet is between this upper ledge and this framework, and this upper ledge has at least one protuberance, is positioned at above this optical sheet.
2. direct type backlight assembly as claimed in claim 1 is characterized in that, the end face of this protuberance and the distance of this optical sheet are between 0 to 0.1 millimeter.
3. direct type backlight assembly as claimed in claim 1 is characterized in that this optical sheet has at least one groove, with ccontaining this protuberance.
4. direct type backlight assembly as claimed in claim 1 is characterized in that the shape of this protuberance comprises column or strip.
5. direct type backlight assembly as claimed in claim 1 is characterized in that this side frame has a depression, and this optical sheet is disposed on this depression.
6. direct type backlight assembly as claimed in claim 1 is characterized in that, also comprises at least one blooming, be disposed on this optical sheet, and this protuberance is positioned at the outside of this blooming.
7. direct type backlight assembly as claimed in claim 1 is characterized in that this optical sheet comprises diffuser plate.
8. direct type backlight assembly as claimed in claim 1 is characterized in that those light sources comprise pointolite or line source.
9. direct type backlight assembly comprises:
One framework comprises that a base plate reaches by the upwardly extending side frame of the side of this base plate;
A plurality of light sources are disposed on this base plate;
One optical sheet is disposed on this side frame, and is positioned at those light source tops, and this optical sheet has at least one protuberance; And
One upper ledge, with the assembling of this framework, and this optical sheet is between this upper ledge and this framework, and this upper ledge covers this protuberance.
10. direct type backlight assembly as claimed in claim 9 is characterized in that, the end face of this protuberance and the distance of this upper ledge are between 0 to 0.1 millimeter.
11. direct type backlight assembly as claimed in claim 9 is characterized in that, this upper ledge has at least one groove, with ccontaining this protuberance.
12. direct type backlight assembly as claimed in claim 9 is characterized in that, the shape of this protuberance comprises column or strip.
13. direct type backlight assembly as claimed in claim 9 is characterized in that, this side frame has a depression, and this optical sheet is disposed on this depression.
14. direct type backlight assembly as claimed in claim 9 is characterized in that, also comprises at least one blooming, be disposed on this optical sheet, and this protuberance is positioned at the outside of this blooming.
15. direct type backlight assembly as claimed in claim 9 is characterized in that, this optical sheet comprises diffuser plate.
16. direct type backlight assembly as claimed in claim 9 is characterized in that, those light sources comprise pointolite or line source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101425292A CN101169546A (en) | 2006-10-23 | 2006-10-23 | Direct type backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101425292A CN101169546A (en) | 2006-10-23 | 2006-10-23 | Direct type backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101169546A true CN101169546A (en) | 2008-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101425292A Pending CN101169546A (en) | 2006-10-23 | 2006-10-23 | Direct type backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101169546A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102073165A (en) * | 2010-11-16 | 2011-05-25 | 友达光电（苏州）有限公司 | Liquid crystal display device |
| CN102893076A (en) * | 2010-06-02 | 2013-01-23 | 夏普株式会社 | Lighting device, display device, and television receiving device |
| CN110174793A (en) * | 2018-12-21 | 2019-08-27 | 友达光电股份有限公司 | Display device |
| CN114043196A (en) * | 2021-11-26 | 2022-02-15 | 深圳市深科达智能装备股份有限公司 | Equipment of equipment protective frame |
-
2006
- 2006-10-23 CN CNA2006101425292A patent/CN101169546A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102893076A (en) * | 2010-06-02 | 2013-01-23 | 夏普株式会社 | Lighting device, display device, and television receiving device |
| CN102893076B (en) * | 2010-06-02 | 2014-11-19 | 夏普株式会社 | Lighting device, display device, and television receiving device |
| CN102073165A (en) * | 2010-11-16 | 2011-05-25 | 友达光电（苏州）有限公司 | Liquid crystal display device |
| CN110174793A (en) * | 2018-12-21 | 2019-08-27 | 友达光电股份有限公司 | Display device |
| CN110174793B (en) * | 2018-12-21 | 2022-10-25 | 友达光电股份有限公司 | Display device |
| CN114043196A (en) * | 2021-11-26 | 2022-02-15 | 深圳市深科达智能装备股份有限公司 | Equipment of equipment protective frame |
| CN114043196B (en) * | 2021-11-26 | 2022-09-13 | 深圳市深科达智能装备股份有限公司 | Equipment of equipment protective frame |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
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