CN200983058Y - Backlight module assembly and LCD - Google Patents
Backlight module assembly and LCD Download PDFInfo
- Publication number
- CN200983058Y CN200983058Y CN 200620016128 CN200620016128U CN200983058Y CN 200983058 Y CN200983058 Y CN 200983058Y CN 200620016128 CN200620016128 CN 200620016128 CN 200620016128 U CN200620016128 U CN 200620016128U CN 200983058 Y CN200983058 Y CN 200983058Y
- Authority
- CN
- China
- Prior art keywords
- linear light
- module backlight
- liquid crystal
- pointolite
- backlight
- 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
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 42
- 239000011248 coating agent Substances 0.000 description 6
- 238000000576 coating method Methods 0.000 description 6
- 239000003292 glue Substances 0.000 description 6
- 238000009792 diffusion process Methods 0.000 description 4
- 230000005142 aphototropism Effects 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004020 luminiscence type Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
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- Liquid Crystal (AREA)
Abstract
The utility model relates to a backlight module and a liquid crystal display device employing the backlight module, wherein the backlight module comprises a plurality of linear light sources and a plurality of point light sources. The linear light sources are arranged in intervals and the brightness of light are gradually increased from the two ends to the center. The point light sources are respectively positioned between the linear light sources with the overall brightness of the light reduced from the two ends of the linear light sources to the center. The backlight module can generate lights with uniform brightness thereby achieving a uniform display of the liquid crystal display device.
Description
Technical field
The utility model relates to a kind of module backlight and the liquid crystal indicator that adopts this module backlight.
Background technology
Because advantages such as liquid crystal indicator has gently, approaches, little power consumption have been widely used on the modernized information equipments such as notebook computer, mobile phone, personal digital assistant.
Seeing also Fig. 1, is a kind of cut-open view of prior art liquid crystal indicator.This liquid crystal indicator 1 comprises a liquid crystal panel 10, one module 11 backlight and a glue frame 13.These module 11 adjacent these liquid crystal panels 10 backlight, and provide planar light for this liquid crystal panel 10.This glue frame 13 is accommodated this module 11 backlight, and supports this liquid crystal panel 10.
The rectangle framework that this glue frame 13 is uncovereds, it comprises a base plate 131 and a plurality of sidewalls 133.This sidewall 133 and these 131 vertical linking to each other of base plate, and form a receiving space (not label).The inwall coating of this glue frame 13 has the coating of high reflectance or attaches reflector plate, to improve the light utilization efficiency of this module 11 backlight.This glue frame 13 also can be made by the material with high reflectance, is used for substituting the coating that inwall was coated with of this glue frame 13 or the reflector plate that is attached.
This module 11 backlight is down straight aphototropism mode set, and it comprises a plurality of cold-cathode fluorescence lamps (Cold Cathode Fluorescent Lamp, CCFL) 110 and one diffusion sheet 114.Seeing also Fig. 2, is the schematic cross-section of the module backlight 11 of liquid crystal indicator 1 shown in Figure 1.This cold-cathode fluorescence lamp 110 is a linear light sorurce, and it is parallel to each other and equidistantly is arranged in this base plate 131 tops, as the light source of this module 11 backlight.Each cold-cathode fluorescence lamp 110 comprises two electrode tips 111, and this two electrode tip 111 is electrically connected with external circuit (figure does not show).This diffusion sheet 114 is arranged between these a plurality of cold-cathode fluorescence lamps 110 and this liquid crystal panel 10, is used for increasing the uniformity coefficient of these a plurality of cold-cathode fluorescence lamp 110 light that send.
Because the characteristics of luminescence of cold-cathode fluorescence lamp 110 itself, its luminosity increases gradually from this two electrode tip 111 to its middle body, the i.e. luminosity skewness of this cold-cathode fluorescence lamp 110, cause the bright dipping of this module 11 backlight inhomogeneous, and then influence the display quality of this liquid crystal indicator 1.
The utility model content
In order to solve the uneven problem of module bright dipping backlight in the prior art, be necessary to provide a kind of emitting uniform module backlight.
Also be necessary to provide a kind of liquid crystal indicator that adopts above-mentioned module backlight.
A kind of module backlight, it comprises a plurality of linear light sorurces and a plurality of pointolite.This a plurality of linear light sorurces space is provided with, and its luminosity increases to central authorities gradually from its two ends.These a plurality of pointolites are separately positioned between these a plurality of linear light sorurces.The overall luminosity of these a plurality of pointolites reduces to central authorities gradually from the two ends of this linear light sorurce.
A kind of liquid crystal indicator, it comprises the module backlight of a liquid crystal panel and adjacent this liquid crystal panel.This module backlight comprises a plurality of linear light sorurces and a plurality of pointolite.This a plurality of linear light sorurces space is provided with, and its luminosity increases to central authorities gradually from its two ends.These a plurality of pointolites are separately positioned between these a plurality of linear light sorurces.The overall luminosity of these a plurality of pointolites reduces to central authorities gradually from the two ends of this linear light sorurce.
Compared with prior art, above-mentioned module backlight adopts a plurality of pointolites to come the non-uniform light of its linear light sorurce of balance, makes the emitting brightness of this module backlight comparatively even, and the demonstration of this liquid crystal indicator is also comparatively even.
Description of drawings
Fig. 1 is a kind of cut-open view of prior art liquid crystal indicator.
Fig. 2 is the schematic cross-section after the module backlight of liquid crystal indicator shown in Figure 1 is assembled.
Fig. 3 is the cut-open view of the utility model liquid crystal indicator first embodiment.
Fig. 4 is the schematic cross-section of the module backlight of liquid crystal indicator shown in Figure 3.
Fig. 5 is the schematic cross-section of the module backlight of the utility model liquid crystal indicator second embodiment.
Embodiment
Seeing also Fig. 3, is the cut-open view of the utility model liquid crystal indicator first embodiment.This liquid crystal indicator 4 comprises a liquid crystal panel 40, one module 41 backlight and a framework 43.These module 41 adjacent these liquid crystal panels 40 backlight, and provide planar light for this liquid crystal panel 40.This framework 43 is accommodated this module 41 backlight, and supports this liquid crystal panel 40.
The rectangle framework that this framework 43 is uncovereds, it comprises a base plate 431 and a plurality of sidewalls 433, these a plurality of sidewalls 433 and these 431 vertical linking to each other of base plate, and form a receiving space (not label).The inwall coating of this framework 43 has the coating of high reflectance or attaches reflector plate, to improve the light utilization efficiency of this module 41 backlight.This framework 43 also can be made by the material with high reflectance, is used for substituting the coating that inwall was coated with of this framework 43 or the reflector plate that is attached.
This module 41 backlight is direct-type backlight modules, and it comprises a plurality of cold-cathode fluorescence lamps 410, a plurality of light emitting diode (Light Emitting Diode, LED) 413 and one diffusion sheet 414.These a plurality of cold-cathode fluorescence lamps 410 are linear structure, and it is parallel to each other and equidistantly is arranged in this base plate 431 tops.These a plurality of light emitting diodes 413 are positioned on this base plate 431, and are provided with at interval with these a plurality of cold-cathode fluorescence lamps 410.These a plurality of cold-cathode fluorescence lamps 410 and these a plurality of light emitting diode 413 common light sources as this module 41 backlight.This diffusion sheet 414 is arranged on the opening part of this receiving space, is used for increasing the uniformity coefficient of these a plurality of cold-cathode fluorescence lamps 410 and these a plurality of light emitting diode 413 light that send, and then increases the outgoing light homogeneity of this module 41 backlight.
Seeing also Fig. 4, is the schematic cross-section of the module backlight 41 of liquid crystal indicator 4 shown in Figure 3.Each cold-cathode fluorescence lamp 410 comprises two relative electrode tips 411, and these two electrode tips 411 are electrically connected with external circuit (figure does not show) respectively.The parallel pointolite district 412 of two adjacent cold-cathode fluorescence lamps, 410 definition multirow.These a plurality of light emitting diodes 413 are positioned at this a plurality of pointolites district 412, and the luminous power of each light emitting diode 413 in the same point light source region 412 is identical, and promptly its luminosity is identical.The number of the light emitting diode 413 in the difference light source region 412 is identical, and its luminous power increases with the luminosity of this cold-cathode fluorescence lamp 410 and reduces gradually, be 410 of per two adjacent cold-cathode fluorescence lamps, the whole luminous power in its multirow pointolite district 412 reduces to the central authorities of this cold-cathode fluorescence lamp 410 gradually from this electrode tip 411.
Because the luminous power of these a plurality of light emitting diodes 413 is arranged with the luminosity of this cold-cathode fluorescence lamp 410, make the uneven situation of luminosity of this cold-cathode fluorescence lamp 410 self obtain balance, thereby make the emitting brightness of this module 41 backlight comparatively even.Contain the mercury metal bigger in this cold-cathode fluorescence lamp 410, and this light emitting diode 413 is a kind of light source of environmentally safe to environmental hazard again.Therefore, this module 41 backlight adopts a plurality of light emitting diodes 413 to substitute part cold-cathode fluorescence lamp 410, can reduce the pollution of this module 41 backlight and 4 pairs of environment of this liquid crystal indicator.
Seeing also Fig. 5, is the schematic cross-section of the module backlight of the utility model liquid crystal indicator second embodiment.This liquid crystal indicator 5 is similar substantially to liquid crystal indicator 4, its key distinction is: the power of each light emitting diode 513 is all identical in the module backlight 51 of this liquid crystal indicator 5, and the number of the pointolite district 512 interior light emitting diodes 513 that multirow is parallel reduces with the luminosity increase of the cold-cathode fluorescence lamp 510 of this module 51 backlight, be that the number of its light emitting diode 513 reduces to central authorities gradually from the two ends of this cold-cathode fluorescence lamp 510 in the multirow pointolite district 512 of 510 of per two adjacent cold-cathode fluorescence lamps.This liquid crystal indicator 5 can obtain the better quality similar to this liquid crystal indicator 4.
The light-source structure of the module backlight of above-mentioned liquid crystal indicator is not only applicable to down straight aphototropism mode set, can be applicable to the side entrance back module yet.
Claims (10)
1. module backlight, it comprises a plurality of linear light sorurces and a plurality of pointolite, this a plurality of linear light sorurces space is provided with, and its luminosity increases to central authorities gradually from its two ends, these a plurality of pointolites are separately positioned between these a plurality of linear light sorurces, it is characterized in that: the overall luminosity of these a plurality of pointolites reduces to central authorities gradually from the two ends of this linear light sorurce.
2. module backlight as claimed in claim 1 is characterized in that: these a plurality of linear light sorurces are parallel to each other.
3. module backlight as claimed in claim 2 is characterized in that: these a plurality of linear light sorurces equidistantly are spaced.
4. module backlight as claimed in claim 2 is characterized in that: define the parallel pointolite district of multirow between these a plurality of linear light sorurces, these a plurality of pointolites are separately positioned in this pointolite district.
5. module backlight as claimed in claim 4 is characterized in that: the pointolite number between adjacent two linear light sorurces in the different rows pointolite district is identical.
6. module backlight as claimed in claim 5 is characterized in that: the luminous power of each pointolite in the same point light source region is identical.
7. module backlight as claimed in claim 6 is characterized in that: the whole luminous power in the multirow pointolite district between per two adjacent linear light sources reduces to central authorities gradually from the two ends of this linear light sorurce.
8. module backlight as claimed in claim 4 is characterized in that: the luminous power of each pointolite is identical in this module backlight.
9. module backlight as claimed in claim 8 is characterized in that: the number of a plurality of pointolite class mark light sources between per two adjacent linear light sources reduces to central authorities gradually from the two ends of this linear light sorurce.
10. liquid crystal indicator, the module backlight that it comprises a liquid crystal panel and adjacent this liquid crystal panel is characterized in that: this module backlight is any described module backlight in the claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620016128 CN200983058Y (en) | 2006-12-01 | 2006-12-01 | Backlight module assembly and LCD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620016128 CN200983058Y (en) | 2006-12-01 | 2006-12-01 | Backlight module assembly and LCD |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200983058Y true CN200983058Y (en) | 2007-11-28 |
Family
ID=38910214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620016128 Expired - Fee Related CN200983058Y (en) | 2006-12-01 | 2006-12-01 | Backlight module assembly and LCD |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200983058Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107561772A (en) * | 2017-08-15 | 2018-01-09 | 昆山龙腾光电有限公司 | Backlight module and display device |
| CN110716345A (en) * | 2018-07-11 | 2020-01-21 | 夏普株式会社 | Chip mounting substrate, display device, and manufacturing method of chip mounting substrate |
-
2006
- 2006-12-01 CN CN 200620016128 patent/CN200983058Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107561772A (en) * | 2017-08-15 | 2018-01-09 | 昆山龙腾光电有限公司 | Backlight module and display device |
| CN107561772B (en) * | 2017-08-15 | 2021-07-13 | 昆山龙腾光电股份有限公司 | Backlight module and display device |
| CN110716345A (en) * | 2018-07-11 | 2020-01-21 | 夏普株式会社 | Chip mounting substrate, display device, and manufacturing method of chip mounting substrate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071128 Termination date: 20151201 |
|
| EXPY | Termination of patent right or utility model |