CN101963309A - Backlight device of display - Google Patents
Backlight device of display Download PDFInfo
- Publication number
- CN101963309A CN101963309A CN2009101598007A CN200910159800A CN101963309A CN 101963309 A CN101963309 A CN 101963309A CN 2009101598007 A CN2009101598007 A CN 2009101598007A CN 200910159800 A CN200910159800 A CN 200910159800A CN 101963309 A CN101963309 A CN 101963309A
- Authority
- CN
- China
- Prior art keywords
- lgp
- display
- lighting device
- back lighting
- housing
- 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.)
- Pending
Links
Images
Landscapes
- Illuminated Signs And Luminous Advertising (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention provides a backlight device of a display, wherein the backlight device mainly comprises at least one light source device, a casing, a light guide plate, a plurality of fixed structures and a plurality of light shielding elements. The casing comprises a bottom plate. The light guide plate is provided with an upper surface, a lower surface and a side surface, the edge of the light guide plate is provided with a plurality of openings and the lower surface thereof faces the casing and is arranged on the casing. The fixed structures are arranged on the bottom plate in a convex manner, corresponding to the openings of the light guide plate, and penetrate the openings of the light guide plate. The light shielding elements have a light penetration rate less than 50% and are arranged at the openings of the light guide plate.
Description
Technical field
The present invention relates to back lighting device, particularly about a kind of backlight liquid crystal display device that is applied in the flat-panel screens.
Background technology
In recent years along with the maturation of photoelectric technology and semiconductor fabrication, (FlatPanel Display) is just flourish for flat-panel screens, wherein LCD (Liquid CrystalDisplay/LCD) is based on advantage such as its low voltage operating, radiationless line scattering, in light weight and volume be little, replaces traditional cathode-ray tube display more gradually and becomes the main flow of display product in recent years.LCD mainly comprises a display panels (Liquid Crystal Display Panel) and a back lighting device (backlight module), wherein back lighting device is in order to providing this display panels required area source, and is the key element that the abundant light source of LCD is provided in the back lighting device with LGP (Light Guide Plate) wherein.
Generally speaking, back lighting device can be divided into two kinds of side-light type and straight-down negatives, and wherein the light source of side-light type back lighting device is disposed at the side of LGP, so that provide LCD required light source.Please refer to Fig. 1, is the schematic diagram of the LGP 9 in the existing side-light type back lighting device, and LGP 9 includes a plurality of recess location 91 and a plurality of support column 92 that passes recess location 91 from backboard.Support column 92 is mainly with LGP 9 and other backboard, reflector plate or blooming piece ... Deng being fixed in the back lighting device.And the light that light source 8 penetrates can be injected LGP 9, wherein the zone of A part is the visible area A of display quality, but the light of injecting LGP 9 because of light source 8 can be from recess location 91 local inhomogeneous spilling, one light leakage phenomena (light leakage) takes place, shown in the B among Fig. 1, and the phenomenon (Mura) of display frame brightness irregularities can take place in this back lighting device, further more can reduce the optics taste of the visible area of its display quality.
So, be necessary to provide a kind of back lighting device that uniform luminance can be provided, to solve aforesaid relevant issues, can prevent that local light from leaking to visible area and reduce the display quality of display.
Summary of the invention
In order to solve the desirable not to the utmost part of above-mentioned prior art, the invention provides a kind of back lighting device of display, wherein back lighting device consists predominantly of at least one light supply apparatus, housing, LGP, a plurality of fixed structure and a plurality of shading element.Housing includes a base plate.LGP has upper surface, lower surface and side surface, and its edge has a plurality of peristomes, and lower surface is towards housing.A plurality of fixed structures can be convexly set in base plate, with the peristome of LGP in correspondence with each other and penetrate the peristome of LGP.A plurality of shading elements, its light transmittance is less than 50% and be arranged at the peristome of LGP.
Therefore, main purpose of the present invention provides a kind of back lighting device of display, wherein back lighting device includes a LGP at least, be arranged at the peristome of LGP by a plurality of shading elements, can prevent light leakage phenomena, reaching preferable optical uniformity, and then promote the optics taste of display quality.
Description of drawings
Fig. 1 is a schematic diagram, is the prior art of the LGP in the side-light type back lighting device;
Fig. 2 is a cutaway view, and first preferred embodiment that proposes according to the present invention is a kind of structural representation of back lighting device section;
Fig. 3 is a schematic diagram, in first preferred embodiment that proposes according to the present invention, has the LGP of a plurality of shading elements;
Fig. 4 A is a schematic diagram, in second preferred embodiment that proposes according to the present invention, and the surface of the contiguous LGP of a plurality of shading elements;
Fig. 4 B is a schematic diagram, and in the 3rd preferred embodiment that proposes according to the present invention, a plurality of shading elements are between a plurality of blooming pieces;
Fig. 4 C is a schematic diagram, and in the 4th preferred embodiment that proposes according to the present invention, a plurality of shading elements are away from the surface of LGP.
[main element symbol description]
LGP (prior art) 9
Recess location (prior art) 91
Support column (prior art) 92
Light source (prior art) 8
Visible area (prior art) A
Light leakage phenomena (prior art) B
LGP 4
Fixed structure 5
The specific embodiment
Because the present invention discloses a kind of back lighting device of display, wherein optical principle of being utilized and basic framework know usually that for correlative technology field has the knowledgeable can understand, so with hereinafter explanation, no longer do complete description.Simultaneously, graphic with what hereinafter contrasted, express the structural representation relevant with feature of the present invention, also do not need according to the complete drafting of actual size, explanation formerly.
At first please refer to Fig. 2, is first preferred embodiment that the present invention proposes, and is a kind of back lighting device 10 of display, consists predominantly of at least one light supply apparatus 1, housing 2, LGP 4, a plurality of fixed structure 5 and a plurality of shading element 45.Housing 2 includes a base plate 3.LGP 4 has upper surface 41, lower surface 42 and side surface 43, please refer to Fig. 3, has a plurality of peristomes 44 at LGP 4 edges.Please continue with reference to figure 2, wherein LGP 4 is to be arranged on the base plate 3 towards housing 2 directions by lower surface 42.A plurality of fixed structures 5 can be convexly set in base plate 3, and with the peristome 44 of LGP 4 in correspondence with each other and penetrate the peristome 44 of LGP 4, by this with lightguide plate fixing 4 and base plate 3.In addition,,, at least one reflector plate 7 can be set further in the lower surface 42 of LGP 4 in order to increase the utilization rate of light, thus a plurality of fixed structure 5, but further lightguide plate fixing 4, reflector plate 7 and base plate 3.Light supply apparatus 1 be many groups of cathode fluorescent tube (Cold Cathode FluorescentLamp/CCFL) or light emitting diode (LED) etc. all can, be arranged at the side of LGP 4.
In addition, what specify is, a plurality of fixed structure 5 of the present invention is except that can being convexly set in base plate 3, also can be convexly set on the housing 2, but not as limit, such as fixed structure 5 of the present invention may extend to the peristome 44 of LGP 4, and then reaches the usefulness of fixing LGP 4, all should belong within fixed structure 5 of the present invention and the application category thereof.
Please continue with reference to figure 3, importantly, in order to prevent light leakage phenomena, the peristome 44 of LGP 4 is provided with a plurality of light transmittances less than 50% shading element 45.And the shading area of these shading elements 45 is not less than the area of peristome 44, is good with the area greater than peristome 44 especially.What this will specify be, the material of these shading elements 45 can be a kind of elastomeric cushion material, for example: adhesive tape or bubble silk floss etc., can support the swelling that LGP causes because of being heated.Shading element 45 also can be wavelength 555 nanometer light transmittances less than 50% material, preferable is wavelength 555 nanometer light transmittances are less than 25% material, can cover peristome 44 effectively, from peristome 44 local inhomogeneous spilling, and then can promote the optics taste of display quality by this light that can prevent to inject LGP 4 from light supply apparatus 1.Certainly, the material of above-mentioned shading element 45, visual actual fabrication demand uses other to meet the material of present embodiment condition.
Further, above-mentioned a plurality of shading elements 45 can be in order to attach, printing, to be provided with or the mode of spray printing be formed at the peristome 44 of the upper surface 41 of LGP 4.
Please refer to Fig. 4 A, the present invention further provides second preferred embodiment, be the back lighting device 10 of another kind of display.The difference of present embodiment and the aforementioned first preferred embodiment maximum is, a plurality of shading elements 45 of present embodiment can be in order to attaching, printing, to be provided with or the mode of spray printing be formed at the surface of optical diaphragm group 6 contiguous LGPs 4, and then first preferred embodiment is described as described above as for the further feature of the back lighting device 10 of the display in the present embodiment.
Please refer to Fig. 4 B, the present invention further provides the 3rd preferred embodiment, be the back lighting device 10 of another kind of display.The difference of present embodiment and the aforementioned first preferred embodiment maximum is, a plurality of shading elements 45 of present embodiment can be formed in order to the mode of attaching, printing, setting or spray printing between above-mentioned a plurality of blooming pieces 61, and then first preferred embodiment is described as described above as for the further feature of the back lighting device 10 of the display in the present embodiment.
Please refer to Fig. 4 C, the present invention further provides the 4th preferred embodiment, be the back lighting device 10 of another kind of display.The difference of present embodiment and the aforementioned first preferred embodiment maximum is, a plurality of shading elements 45 of present embodiment can be in order to attaching, printing, to be provided with or the mode of spray printing be formed at the surface of optical diaphragm group 6 away from LGP 4, and then first preferred embodiment is described as described above as for the further feature of the back lighting device 10 of the display in the present embodiment.
The above is preferred embodiment of the present invention only, is not in order to limit the right of applying for a patent of the present invention; Simultaneously above description should be understood and be implemented for the special personage who knows the present technique field, so other does not break away from the equivalence of being finished under the disclosed spirit and change or modification, all should be included in the claim.
Claims (12)
1. the back lighting device of a display is characterized in that comprising:
At least one light supply apparatus, its projection source to one LGP;
One housing, it comprises a base plate;
This LGP is arranged in this housing, and this LGP has a upper surface, a lower surface and at least one side surface, and this LGP edge has a plurality of peristomes, and this lower surface is towards this housing;
A plurality of fixed structures are arranged at the peristome of this LGP;
It is characterized in that: the back lighting device of this display comprises a plurality of shading elements, and each shading element is separately positioned on the top of each peristome of this LGP; These a plurality of fixed structures are convexly set in this base plate, and corresponding and penetrate a plurality of peristomes in this LGP.
2. the back lighting device of display as claimed in claim 1 is characterized in that, the shading area of described each shading element is more than or equal to each peristome area.
3. the back lighting device of display as claimed in claim 1 is characterized in that, described each shading element adopts light transmittance less than 50% material.
4. the back lighting device of a display, it comprises:
At least one light supply apparatus, its projection source to one LGP;
One housing, it comprises a base plate;
This LGP is arranged in this housing, and this LGP has a upper surface, a lower surface and at least one side surface, and this LGP edge has a plurality of peristomes, and this lower surface is towards this housing;
A plurality of fixed structures are arranged at the peristome of this LGP;
At least one optical diaphragm group, it is arranged in this housing, is adjacent to this upper surface of this LGP relatively by these a plurality of fixed structures;
It is characterized in that: the back lighting device of this display comprises a plurality of shading elements, and these a plurality of shading elements are separately positioned on the surface of contiguous this LGP of this optical diaphragm group; These a plurality of fixed structures are convexly set in this base plate, and corresponding and penetrate a plurality of peristomes in this LGP.
5. the back lighting device of display as claimed in claim 4 is characterized in that, the shading area of described each shading element is more than or equal to each peristome area.
6. the back lighting device of display as claimed in claim 4 is characterized in that, described each shading element is to adopt light transmittance less than 50% material.
7. the back lighting device of a display, it comprises:
At least one light supply apparatus, its projection source to one LGP;
One housing, it comprises a base plate;
This LGP is arranged in this housing, and this LGP has a upper surface, a lower surface and at least one side surface, and this LGP edge has a plurality of peristomes, and this lower surface is towards this housing;
A plurality of fixed structures are arranged at the peristome of this LGP;
At least one optical diaphragm group, it is arranged in this housing, is adjacent to this upper surface of this LGP relatively by these a plurality of fixed structures;
It is characterized in that: the back lighting device of this display comprises a plurality of shading elements, and these a plurality of shading elements are separately positioned on the surface of this optical diaphragm group away from this LGP; These a plurality of fixed structures are convexly set in this base plate, and corresponding and penetrate a plurality of peristomes in this LGP.
8. the back lighting device of display as claimed in claim 7 is characterized in that, the shading area of described each shading element is more than or equal to each peristome area.
9. the back lighting device of display as claimed in claim 7 is characterized in that, described each shading element adopts light transmittance less than 50% material.
10. the back lighting device of a display, it comprises:
At least one light supply apparatus, its projection source to one LGP;
One housing, it comprises a base plate;
This LGP is arranged in this housing, and this LGP has a upper surface, a lower surface and at least one side surface, and this LGP edge has a plurality of peristomes, and this lower surface is towards this housing;
A plurality of fixed structures are arranged at the peristome of this LGP;
At least one optical diaphragm group, it is arranged in this housing, is adjacent to this upper surface of this LGP relatively by these a plurality of fixed structures;
It is characterized in that: the back lighting device of this display comprises a plurality of shading elements, and these a plurality of shading elements are arranged at respectively between this optical diaphragm group; These a plurality of fixed structures are convexly set in this base plate, and corresponding and penetrate a plurality of peristomes in this LGP.
11. the back lighting device of display as claimed in claim 10 is characterized in that, the shading area of described each shading element is more than or equal to each peristome area.
12. the back lighting device of display as claimed in claim 10 is characterized in that, described each shading element adopts light transmittance less than 50% material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101598007A CN101963309A (en) | 2009-07-22 | 2009-07-22 | Backlight device of display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101598007A CN101963309A (en) | 2009-07-22 | 2009-07-22 | Backlight device of display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101963309A true CN101963309A (en) | 2011-02-02 |
Family
ID=43516307
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101598007A Pending CN101963309A (en) | 2009-07-22 | 2009-07-22 | Backlight device of display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101963309A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012142775A1 (en) * | 2011-04-21 | 2012-10-26 | 深圳市华星光电技术有限公司 | Fixing mechanism for backlight module and backlight module |
| CN102889523A (en) * | 2012-10-09 | 2013-01-23 | 深圳市华星光电技术有限公司 | Backlight module |
| US8388161B2 (en) | 2011-04-21 | 2013-03-05 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Fixing mechanism for backlight module and backlight module |
| CN105570759A (en) * | 2014-08-22 | 2016-05-11 | 欧姆龙株式会社 | Lighting device, electronic device, frame construction, and method for manufacturing the frame construction |
-
2009
- 2009-07-22 CN CN2009101598007A patent/CN101963309A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012142775A1 (en) * | 2011-04-21 | 2012-10-26 | 深圳市华星光电技术有限公司 | Fixing mechanism for backlight module and backlight module |
| US8388161B2 (en) | 2011-04-21 | 2013-03-05 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Fixing mechanism for backlight module and backlight module |
| CN102889523A (en) * | 2012-10-09 | 2013-01-23 | 深圳市华星光电技术有限公司 | Backlight module |
| CN105570759A (en) * | 2014-08-22 | 2016-05-11 | 欧姆龙株式会社 | Lighting device, electronic device, frame construction, and method for manufacturing the frame construction |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201651946U (en) | Backlight module and liquid crystal display | |
| CN111369900A (en) | Spliced screen | |
| CN103823319A (en) | Backlight module and liquid crystal display device using same | |
| CN101281320B (en) | LCD device | |
| CN202660409U (en) | Direct type backlight module and display device | |
| CN202057827U (en) | Light guide plate and backlight module | |
| CN203868938U (en) | Shading adhesive tape, backlight module and display panel | |
| KR20100075134A (en) | Backlight unit for liquid crystal display device | |
| CN102128398A (en) | Backlight module and liquid crystal display device | |
| US20180196186A1 (en) | Backlight Module and Liquid Crystal Display | |
| KR20160090895A (en) | Installation structure of optical film set | |
| KR20110070579A (en) | Reflecting plate for prevent leakage of light, back light unit and liquid crystal display device having thereof | |
| CN105759490A (en) | Brightness enhancement film, display module and display device | |
| CN101963309A (en) | Backlight device of display | |
| CN201606740U (en) | LED side backlight module, LCD (liquid crystal display) device and LCD TV | |
| CN106896576A (en) | A kind of ultra-thin downward back photo structure | |
| CN102705761B (en) | Backlight module | |
| CN210488190U (en) | Optical diaphragm, backlight module, liquid crystal module and terminal equipment | |
| KR101759706B1 (en) | Liquid crystal display device | |
| CN201081178Y (en) | High intensity backlight module | |
| CN103528024A (en) | Light guiding element, backlight source and display device | |
| CN102878525A (en) | Prism film, side-light type backlight module and liquid crystal display device | |
| CN109143683A (en) | A kind of display device | |
| CN101770111A (en) | Backlight module device of liquid crystal screen display and forming method thereof | |
| CN104061488A (en) | Backlight module and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110202 |