CN2590032Y - Structure improved straight backlight module - Google Patents
Structure improved straight backlight module Download PDFInfo
- Publication number
- CN2590032Y CN2590032Y CN 02254992 CN02254992U CN2590032Y CN 2590032 Y CN2590032 Y CN 2590032Y CN 02254992 CN02254992 CN 02254992 CN 02254992 U CN02254992 U CN 02254992U CN 2590032 Y CN2590032 Y CN 2590032Y
- Authority
- CN
- China
- Prior art keywords
- light
- groove
- guide plate
- light guide
- face
- 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.)
- Expired - Fee Related
Links
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 14
- 238000002834 transmittance Methods 0.000 claims description 8
- 230000007423 decrease Effects 0.000 claims description 4
- 238000009792 diffusion process Methods 0.000 abstract description 4
- 239000012141 concentrate Substances 0.000 abstract description 2
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000004446 light reflex Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Images
Landscapes
- Planar Illumination Modules (AREA)
Abstract
The utility model relates to a structure improved straight downward backlight module, which comprises a light guiding board, a light source, a reflecting assembly and a base seat, wherein, the bottom of the light guiding board is a reflecting surface which is provided with a groove; the top surface of the groove is a diffusion surface which is provided with grains; the side face of the groove is a light entering surface; the part of the light guiding board positioned at the side of the light entering surface of the groove is a side wing part; the side wing part and the horizontal plane of an opening of the groove of the light guiding board are in an upward included angle; the light source is arranged in the groove of the light guiding board. The reflecting assembly is covered above the reflecting surface of the light guiding board; the light source is coated in the reflecting assembly and the light guiding board; the light guiding board and the light source are arranged above the base seat. One part of light rays transmitted by the light source sends up the diffusing surface; one part enters the side wing part to move on, and thus, the brightness of range in the neighborhood of the light source is decreased; the height difference of the end face of the side wing part and the horizontal plane of the opening of the groove of the light guiding board offsets; the thickness of the side wing part degressively changes. The light rays are made to concentrate towards two end faces; the light rays of a light emission surface of the light guiding board are more homogeneous.
Description
Technical field
The utility model relates to a kind of direct type backlight module that improves structure, particularly about a kind of line source effectively is transmitted into area source, to be applied to go out as the sheet-type of LCD screen etc. the backlight module of electro-optical device.
Background technology
Traditional display device, the technology that is the applying electronic bundle to produce light and image in a curved surface or planar range, be subject to the characteristic demand of electron beam, make that the kinescope of described display device is bulky, therefore R﹠D direction of new generation, be to attach most importance to dwindle its volume, so the display device in conjunction with the backlight module technology begins flourish, appearance as LCD TV, for narrow day by day living and working environment provides an approach of saving arrangement space, and for example mobile computer is general, what be its weight significantly alleviates compact with volume, also has the setting of electronic advertisement board, also because the innovation of weight and volume, vision and advertisement around making more beautify with changeable, and these all are to reach one by one by effective flattening of display panel, and backlight module is wherein just being played the part of the key player who effectively utilizes light source; Under the prerequisite of display panel volume flattening, how to utilize the characteristic of light, make each zone of backlight module that enough and uniform brightness all be arranged, be the improved emphasis direction of backlight modular structure.
Existing backlight modular structure, see also shown in Figure 1, comprise a light guide plate 1a, one light source 2a, an one reflection subassembly 3a and a pedestal 4a, the end face of this light guide plate 1a is exiting surface 10a, the bottom surface of light guide plate 1a is for advancing light face 11a, this light source 2a is arranged at advancing below the light face 11a mid point of light guide plate 1a, this reflection subassembly 3a hides the side at light guide plate 1a, described pedestal 4a is camber, light guide plate 1a and light source 2a are arranged at the top of pedestal 4a simultaneously, the light that light source 2a is sent penetrates from exiting surface 10a, thereby prevent that the part of light beyond exiting surface 10a is lost, pedestal 4a surface is provided with reflection subassembly 40a simultaneously, as electroplating surface, to strengthen the reflecting effect of light, make the light of exiting surface 10a brighter.
Above-mentioned existing backlight modular structure, the light of exiting surface concentrates on the into source region of light face mid point below, it is bright excessively to make exiting surface present zone line, more gradually dark away from the dual-side of light source, cause light even inadequately, and, make the thickness of backlight modular structure and volume strengthen a lot because pedestal is camber, the setting on a large scale of reflection subassembly has also increased manufacturing cost simultaneously.
Summary of the invention
Therefore, at the defective of above-mentioned existing backlight modular structure, fundamental purpose of the present utility model is to provide a kind of direct type backlight module that improves structure, makes the exiting surface light of light guide plate of backlight module more even, and improves brightness.
Another purpose of the present utility model is to provide a kind of direct type backlight module that improves structure, and the volume of backlight module is contracted to suitable thickness size.
To achieve these goals, the utility model mainly is that a kind of direct type backlight module that improves structure is being provided, comprise a light guide plate, a light source, a reflection subassembly and a pedestal, the bottom surface of described light guide plate is a reflecting surface, and this reflecting surface is provided with groove, and the end face of this groove is a diffusingsurface, this diffusingsurface is provided with lines, the side of groove is for advancing the light face, and the part of advancing light face side that light guide plate is positioned at groove is a flank section, and the surface level of the slot opening of this flank section and light guide plate is an angle that raises up; This light source is arranged in the groove of light guide plate; Described reflection subassembly hides on the reflecting surface of light guide plate, and light source package is overlayed in reflection subassembly and the light guide plate; Described pedestal top is provided with light guide plate and light source.
A kind of direct type backlight module that improves structure of the present utility model wherein, comprising:
One light guide plate, its bottom surface is a reflecting surface, this reflecting surface is provided with groove, the end face of this groove is a diffusingsurface, this diffusingsurface is provided with lines, the side of groove is for advancing the light face, and the light face lateral section that advances that light guide plate is positioned at groove is a flank section, and the surface level of the slot opening of this flank section and light guide plate is an angle that raises up; One light source, it is arranged in the groove of light guide plate;
One reflection subassembly, it hides on the reflecting surface of light guide plate, and light source package is overlayed in reflection subassembly and the light guide plate; And a pedestal, its top is provided with light guide plate and light source.
The direct type backlight module of described improvement structure, the reflecting surface of wherein said light guide plate is provided with lines, and this lines is provided with rake, and the angle of inclination of this rake is different because of the difference of its position.
The direct type backlight module of described improvement structure, the diffusingsurface of the groove of wherein said light guide plate is provided with the groove transmittance section.
The direct type backlight module of described improvement structure, the lines of the diffusingsurface of the groove of wherein said light guide plate comprise reflecting part and lines transmittance section, and described reflecting part is inclined to set, and its angle of inclination is different because of the difference of its position.
The direct type backlight module of described improvement structure, the end face of wherein said flank section are exiting surface, and this exiting surface is provided with lines, and this lines is provided with rake, and the angle of inclination of this rake is different because of the difference of its position.
The direct type backlight module of described improvement structure, wherein said flank section is an end face away from the light face that advances of groove, the thickness of flank section advances light from it and successively decreases towards this end face.
The direct type backlight module of described improvement structure, the groove two ends of wherein said light guide plate are respectively leading flank and trailing flank, and described reflection subassembly hides the end face in the flank section of leading flank, trailing flank and the light guide plate of light guide plate.
The direct type backlight module of described improvement structure, the end face of wherein said pedestal is provided with reflection subassembly, and is coated on the end face of the flank section of light guide plate.
Brief Description Of Drawings
In order further to understand the utility model is technology, means and the effect that the predetermined purpose of realization is taked, see also following about detailed description of the present utility model and accompanying drawing, to make the purpose of this utility model, feature and characteristics apparent, yet appended accompanying drawing only provides reference and explanation usefulness, is not to be used for the utility model is limited.
In the accompanying drawing,
Fig. 1 is the cross sectional side view of existing backlight modular structure;
Fig. 2 is the stereographic map of the utility model light guide plate;
Fig. 3 is the cross sectional side view of the utility model first embodiment;
Fig. 3 A is the enlarged drawing of the A part of Fig. 3;
Fig. 4 is the cross sectional side view of the utility model second embodiment;
Fig. 5 is the cross sectional side view of the utility model the 3rd embodiment.
Embodiment
See also shown in Fig. 2, Fig. 3 and Fig. 3 A, the utility model is a kind of direct type backlight module that improves structure, comprises a light guide plate 1, a light source 2, a reflection subassembly 3 and a pedestal 4, wherein:
Pedestal 4, its top is provided with light guide plate 1 and light source 2, like this, light source 2 advances light face 61 transmission light to light guide plate 1 from the end face diffusingsurface 51 and the side of the groove 60 of light guide plate 1, avoid light to scatter and disappear from other position, the end face of pedestal 4 also can be provided with reflection subassembly 3 simultaneously, and coats the end face 68 of the flank section 6 of light guide plate 1.
See also shown in Fig. 3 A, the end face diffusingsurface 51 of the light directive groove 60 of light source 2 emissions, diffusingsurface 51 reaches all degree with the brightness of the exiting surface 50 of its lines 52 control light source portion 5, the groove transmittance section 55 of a part of self-diffusion face 51 of light is penetrated to exiting surface 50 with the lines transmittance section 53 of its lines 52, another of light be the reflecting part 54 of the lines 52 of directive diffusingsurface 51 partly, the side that the angle of inclination setting of reflecting part 54 makes light reflex to groove 60 is advanced the 61 continuation transmission of light face and is advanced to flank section 6, therefore, light reduces from the ejaculation brightness of the light source portion 5 of light guide plate 1, light source 2 environs are crossed bright degree and are lowered, and light is transferred to flank section 6, replenishes other regional light.
The light of light source 2 emissions, advance light face 61 with the side of the light directive groove 60 of lines 52 reflections of the groove 60 of light guide plate 1, light reflexes to exiting surface 62 because of the angle of inclination of the rake 67 of the lines 66 of reflecting surface 65,, the thickness of flank section 6 successively decreases simultaneously because of advancing light face 61 to its end face 68 from it, make the easier end face 68 that is passed to of light, therefore, make the brightness of exiting surface 62 of flank section 6 more even.
See also shown in Figure 3, the top of light guide plate 1 is provided with a diffusion component 8, because the exiting surface 50 of the light source portion 5 of light guide plate 1 more dwindles with the light luminance difference of the exiting surface 62 of flank section 6, when making light be presented to diffusion component 8, obtain more uniform brightness, light makes the light atomizing because of rake 64 refractions of the lines 63 of the exiting surface 62 of flank section 6 simultaneously, and briliancy increases.
See also shown in Figure 4ly, the diffusingsurface 51 of the groove 60 of light guide plate 1 is an arc setting, to cooperate the requirement of light uniformity coefficient.
See also shown in Figure 5ly, the exiting surface 62 of the flank section 6 of light guide plate 1 is an arc setting, to cooperate the requirement of light uniformity coefficient.
Therefore, by the direct type backlight module of improvement structure of the present utility model, have following characteristics:
(1) the lines setting of described groove end face diffusingsurface makes the light source portion brightness of light source near zone reduce, and the brightness of flank section increases, and the difference of dwindling brightness each other makes the exiting surface light of light guide plate of backlight module more even.
(2) the lines setting of the reflecting surface of described flank section with the lines setting of its exiting surface, makes the exiting surface light of light guide plate of backlight module more even.
(3) difference in height of the surface level of the slot opening of described flank section end face and light guide plate skew, and the thickness-tapered of flank section changes, and makes light to the both ends of the surface transmission makes the light of exiting surface of light guide plate of backlight module more even.
(4) difference in height of the surface level of the slot opening of described flank section end face and light guide plate skew, and the variation of the thickness-tapered of flank section, the volume-diminished that makes backlight modular structure is to suitable thickness size.
In sum; detailed description and accompanying drawing for the specific embodiment of the best of the present utility model; but feature of the present utility model is not limited thereto; scope of patent protection of the present utility model should be as the criterion with accompanying Patent right requirement; the every spirit of the utility model claims and embodiment of its similar variation of meeting; all should be included in the scope of patent protection of the present utility model; any those of ordinary skill of being familiar with this technology of this area, the variation that can expect easily or modification all should belong to scope of patent protection of the present utility model.
Claims (8)
1, a kind of direct type backlight module that improves structure is characterized in that, comprising:
One light guide plate, its bottom surface is a reflecting surface, this reflecting surface is provided with groove, the end face of this groove is a diffusingsurface, this diffusingsurface is provided with lines, the side of groove is for advancing the light face, and the light face lateral section that advances that light guide plate is positioned at groove is a flank section, and the surface level of the slot opening of this flank section and light guide plate is an angle that raises up; One light source, it is arranged in the groove of light guide plate;
One reflection subassembly, it hides on the reflecting surface of light guide plate, and light source package is overlayed in reflection subassembly and the light guide plate; And a pedestal, its top is provided with light guide plate and light source.
2, the direct type backlight module of improvement structure according to claim 1 is characterized in that the reflecting surface of described light guide plate is provided with lines, and this lines is provided with rake, and the angle of inclination of this rake is different because of the difference of its position.
3, the direct type backlight module of improvement structure according to claim 1 is characterized in that the diffusingsurface of the groove of described light guide plate is provided with the groove transmittance section.
4, the direct type backlight module of improvement structure according to claim 1, the lines of diffusingsurface that it is characterized in that the groove of described light guide plate comprises reflecting part and lines transmittance section, described reflecting part is inclined to set, and its angle of inclination is different because of the difference of its position.
5, the direct type backlight module of improvement structure according to claim 1, the end face that it is characterized in that described flank section is an exiting surface, and this exiting surface is provided with lines, and this lines is provided with rake, and the angle of inclination of this rake is different because of the difference of its position.
6, the direct type backlight module of improvement structure according to claim 1 is characterized in that described flank section is an end face away from the light face that advances of groove, and the thickness of flank section advances light from it and successively decreases towards this end face.
7, the direct type backlight module of improvement structure according to claim 6, the groove two ends that it is characterized in that described light guide plate are respectively leading flank and trailing flank, and described reflection subassembly hides the end face in the flank section of leading flank, trailing flank and the light guide plate of light guide plate.
8, the direct type backlight module of improvement structure according to claim 6 is characterized in that the end face of described pedestal is provided with reflection subassembly, and is coated on the end face of the flank section of light guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02254992 CN2590032Y (en) | 2002-09-24 | 2002-09-24 | Structure improved straight backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02254992 CN2590032Y (en) | 2002-09-24 | 2002-09-24 | Structure improved straight backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2590032Y true CN2590032Y (en) | 2003-12-03 |
Family
ID=33723614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02254992 Expired - Fee Related CN2590032Y (en) | 2002-09-24 | 2002-09-24 | Structure improved straight backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2590032Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7387423B2 (en) | 2004-02-27 | 2008-06-17 | Hon Hai Precision Industry Co., Ltd. | Light guide plate with transmittance enhancement layer and backlight system using same |
| CN101655634B (en) * | 2008-08-19 | 2011-05-04 | 北京京东方光电科技有限公司 | Liquid crystal display backlight module |
| CN112558213A (en) * | 2019-09-26 | 2021-03-26 | 夏普株式会社 | Illumination device and display device |
-
2002
- 2002-09-24 CN CN 02254992 patent/CN2590032Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7387423B2 (en) | 2004-02-27 | 2008-06-17 | Hon Hai Precision Industry Co., Ltd. | Light guide plate with transmittance enhancement layer and backlight system using same |
| CN101655634B (en) * | 2008-08-19 | 2011-05-04 | 北京京东方光电科技有限公司 | Liquid crystal display backlight module |
| CN112558213A (en) * | 2019-09-26 | 2021-03-26 | 夏普株式会社 | Illumination device and display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105572783B (en) | A kind of light guide plate, backlight module and display device containing the light guide plate | |
| CN1299154C (en) | Light conducting board and supporter for it | |
| CN1249500C (en) | Liquid crystal display device and electronic apparatus | |
| CN1991518B (en) | Backlight and liquid crystal display having the same | |
| CN1081343C (en) | Illumination device LCD equipment containing same | |
| CN101477272B (en) | Optical plate, backlight assembly and display device including the same | |
| CN1896840A (en) | Surface light source and backlight unit having the same | |
| CN101668988B (en) | Lighting device and liquid crystal display device | |
| CN1752811A (en) | Liquid crystal display device having high brightness | |
| CN101038392A (en) | Light guide panel for LCD and back light unit using the same | |
| CN1717614A (en) | Liquid crystal indicator | |
| CN1373392A (en) | Front projection screen | |
| CN2590032Y (en) | Structure improved straight backlight module | |
| CN1619373A (en) | Light conducting board and back light module | |
| CN2852189Y (en) | Liquid crystal display module | |
| CN1221841C (en) | Downward type back light module | |
| CN1920634A (en) | Display | |
| CN2627536Y (en) | Light source module arrangement of backlight module | |
| CN2588408Y (en) | Double-side lighting back light source | |
| CN1698001A (en) | Back light for display device | |
| CN1601353A (en) | Backlight modular of Two-D display | |
| CN2653542Y (en) | Light-emittig diode backlight source | |
| CN1517764A (en) | Reflector and liquid crystal display device | |
| CN2769945Y (en) | Backlight module | |
| CN1949048A (en) | Backlight module and light guiding plate thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |