CN201051199Y - Backlight module assembly and LCD - Google Patents
Backlight module assembly and LCD Download PDFInfo
- Publication number
- CN201051199Y CN201051199Y CNU2007201204779U CN200720120477U CN201051199Y CN 201051199 Y CN201051199 Y CN 201051199Y CN U2007201204779 U CNU2007201204779 U CN U2007201204779U CN 200720120477 U CN200720120477 U CN 200720120477U CN 201051199 Y CN201051199 Y CN 201051199Y
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- light source
- module backlight
- guide plate
- input end
- 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
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Abstract
The utility model discloses a backlight module and a liquid crystal display device which utilizes the backlight module. The backlight module comprises a light source, a light guide plate and a frame body. The frame body contains the light source and the light guide plate and comprises a metal sheet which corresponds to a voltage input end of the light source and is used to blind electromagnetic waves which are generated when the voltage input end of the light source is operated. The metal sheet of the frame body of the backlight module in the liquid crystal display device is capable of blinding parts of electromagnetic waves which are generated by the voltage input end of the light source and effectively preventing the inner portion of a liquid crystal panel from being affected by the electromagnetic waves, thereby improving the quality of displayed images.
Description
Technical field
The utility model relates to a kind of module backlight and liquid crystal indicator.
Background technology
In recent years, advantage such as liquid crystal indicator is frivolous because of volume, it is little to take up room, radiation is little has occupied the main flow that shows product gradually.Liquid crystal indicator generally includes a liquid crystal panel and the module backlight that planar light is provided for this liquid crystal panel.
See also Fig. 1, Fig. 2 and Fig. 3, Fig. 1 is a kind of three-dimensional exploded view of prior art liquid crystal indicator, and Fig. 2 is the assembling synoptic diagram of liquid crystal indicator shown in Figure 1, and Fig. 3 is the diagrammatic cross-section of Fig. 2 along III-III.This liquid crystal indicator 1 comprises a liquid crystal panel 11 and a module 12 backlight.This module backlight 12 and these liquid crystal panel 11 stacked settings also provide planar light for this liquid crystal panel 11.
This liquid crystal panel 11 comprises two relative one first substrate 112 and one second substrates 115 and is sandwiched in liquid crystal layer 113 between this two substrates 112,115.These liquid crystal layer 113 1 sides of the vicinity of this first substrate 112 comprise a common electrode layer (figure does not show), and a side of this liquid crystal layer 113 of the vicinity of this second substrate 115 comprises a pixel electrode layer (figure does not show).After 11 energisings of this liquid crystal panel, produce an electric field between this common electrode layer and this pixel electrode layer, the liquid crystal of this liquid crystal layer 113 rotates under this effect of electric field, controls passing through from the light of this module 12 backlight.
This module 12 backlight comprises a glue frame 13, an optical diaphragm group 14, a cathode fluorescent tube 15, a light guide plate 16 and a reflector plate 17.This glue frame 13 is square framework.This light guide plate 16 comprises the exiting surface 163 that an incidence surface 161, one and this incidence surface 161 are adjacent, and one with these exiting surface 163 opposed bottom surface 165.
This glue frame 13 is accommodated this optical diaphragm group 14, this cathode fluorescent tube 15, this light guide plate 16 and this reflector plate 17.The incidence surface 161 of these cathode fluorescent tube 15 contiguous these light guide plate 16 is provided with, and the exiting surface 163 of these optical diaphragm group 14 contiguous these light guide plate 16 is provided with, and the bottom surface 165 of these reflector plate 17 contiguous these light guide plate 16 is provided with.
During this liquid crystal indicator 1 work, this cathode fluorescent tube 15 is luminous, light is penetrated by this exiting surface 163 via the propagation of this light guide plate 16, penetrate this module 12 backlight via this optical diaphragm group 14 again, for this liquid crystal panel 11 provides planar light, this reflector plate 17 utilizes this light guide plate 16 of light leak reflected back of this light guide plate 16 again.
Yet this cathode fluorescent tube 15 time can generate electromagnetic waves in work, and the electromagnetic wave that produces when opening is the strongest.This cathode fluorescent tube 15 needs the trigger voltage of 1000V-3000V usually, and its operating voltage has only several hectovolts usually, fluorescent tube is very short to the time of fluorescent tube operate as normal by starting, voltage altering a great deal at short notice will be to extraneous launching electromagnetic wave when the alternating current of high-frequency and high-voltage is arranged in the tube circuit.This electromagnetic existence can be disturbed the electric field of these liquid crystal panel 11 inside, influences the sense of rotation of the liquid crystal of this liquid crystal layer 113, and then has a strong impact on the display quality of picture.
The utility model content
In order to solve the bigger technical matters of prior art module electromagenetic wave radiation backlight, be necessary to provide a kind of module backlight of effectively shielding electromagnetic wave radiation.
In addition, be necessary to provide a kind of liquid crystal indicator of using above-mentioned module backlight.
A kind of module backlight, it comprises a light source, a light guide plate and a framework.This framework is accommodated this light source and this light guide plate, and this framework comprises a sheet metal, and this sheet metal is to voltage input end setting that should light source, the electromagnetic wave that produces during in order to the voltage input end work of shielding light source.
A kind of liquid crystal indicator, it comprises a liquid crystal panel and a module backlight, this module backlight and the stacked setting of this liquid crystal panel and provide planar light for this liquid crystal panel, this module backlight comprises a framework, a light source and a light guide plate, this framework is accommodated this light source and this light guide plate, this framework comprises a sheet metal, and this sheet metal is to voltage input end setting that should light source, the electromagnetic wave that produces during in order to the voltage input end work of shielding light source.
Compared with prior art, the sheet metal correspondence of the framework of module backlight is arranged at the voltage input end of this light source in this liquid crystal indicator, the maskable part is by the electromagnetic wave of the voltage input end generation of this light source, effectively prevent the influence of electromagnetic wave, improve the quality of display frame the liquid crystal panel internal electric field.
Description of drawings
Fig. 1 is a kind of three-dimensional exploded view of prior art liquid crystal indicator.
Fig. 2 is the assembling synoptic diagram of liquid crystal indicator shown in Figure 1.
Fig. 3 is the diagrammatic cross-section of Fig. 2 along III-III.
Fig. 4 is the three-dimensional exploded view of the utility model liquid crystal indicator one better embodiment.
Fig. 5 is the assembling synoptic diagram of liquid crystal indicator shown in Figure 4.
Fig. 6 is the diagrammatic cross-section of Fig. 5 along VI-VI.
Embodiment
See also Fig. 4, Fig. 5 and Fig. 6, Fig. 4 is the three-dimensional exploded view of the utility model liquid crystal indicator one better embodiment, and Fig. 5 is the assembling synoptic diagram of liquid crystal indicator shown in Figure 4, and Fig. 6 is the diagrammatic cross-section of Fig. 5 along VI-VI.This liquid crystal indicator 2 comprises a liquid crystal panel 21 and a module 22 backlight.This module backlight 22 and these liquid crystal panel 21 stacked settings also provide planar light for this liquid crystal panel 21.
This liquid crystal panel 21 comprises two relative one first substrate 212 and one second substrates 215 and is sandwiched in liquid crystal layer 213 between this two substrate 212,215.These liquid crystal layer 213 1 sides of the vicinity of this first substrate 212 comprise a common electrode layer (figure does not show), and a side of this liquid crystal layer 213 of the vicinity of this second substrate 215 comprises a pixel electrode layer (figure does not show).After 21 energisings of this liquid crystal panel, produce an electric field between this common electrode layer and this pixel electrode layer, the liquid crystal of this liquid crystal layer 213 rotates under this effect of electric field, controls passing through from the light of this module 22 backlight.
This module 22 backlight comprises a glue frame 23, an optical diaphragm group 24, a cathode fluorescent tube 25, a light guide plate 26 and a reflector plate 27.This glue frame 23 is square framework.
This glue frame 23 comprises a first side wall 231, one second sidewall 232, one the 3rd sidewall 233, one the 4th sidewall 234 that head and the tail link to each other in regular turn and a underframe 230 that extends internally from these four sidewalls, 231,232,233,234 inboards.This underframe 230 forms one first space 237 and one second space 238 with this four sidewall 231,232,233,234, this liquid crystal panel 21 is accommodated in this first space 237, and this optical diaphragm group 24, this cathode fluorescent tube 25, this light guide plate 26 and this reflector plate 27 are accommodated in this second space 238.The corner of this underframe 230 comprises a sheet metal 280.This sheet metal 280 can be aluminium flake or tin sheet, and it is attached at the surface of this underframe 230 by adhesive tape.
This light guide plate 26 comprises the exiting surface 263 that an incidence surface 261, one and this incidence surface 261 are adjacent, and one with these exiting surface 263 opposed bottom surface 265.
The incidence surface 261 of this cathode fluorescent tube 25 contiguous these light guide plate 26 is provided with, and it comprises a high-pressure side and a low pressure end, the high-pressure side that 280 pairs of the sheet metals of this glue frame 23 should cathode fluorescent tube 25.The exiting surface 263 of these optical diaphragm group 24 contiguous these light guide plate 26 is provided with, and the bottom surface 265 of these reflector plate 27 contiguous these light guide plate 26 is provided with.
During these liquid crystal indicator 2 work, this cathode fluorescent tube 25 is luminous, light is penetrated by this exiting surface 263 via the propagation of this light guide plate 26, penetrate this module 22 backlight via this optical diaphragm group 24 again, for this liquid crystal panel 21 provides planar light, this reflector plate 27 utilizes this light guide plate 26 of light leak reflected back of this light guide plate 26 again.The electromagnetic wave that this this cathode fluorescent tube 25 of sheet metal 280 masked segments is produced reduces the interference of electromagnetic wave to liquid crystal panel 21.
Compared to prior art, the underframe 230 of the glue frame 23 of this liquid crystal indicator 2 comprise to should cathode fluorescent tube 25 sheet metals 280 that are provided with, the electromagnetic wave that the maskable part is produced by cathode fluorescent tube 25, effectively prevent its influence, improve the display quality of liquid crystal indicator 2 liquid crystal panel 21 internal electric fields.
This sheet metal 280 is not limit the surface of the contiguous cathode fluorescent tube 25 that is attached at this underframe 230, it also can be attached at the surface of these underframe 230 contiguous these liquid crystal panels 21, and these sheet metal 280 surface areas are big more, shield effectiveness is unreasonable to be thought, but must guarantee that this module 22 backlight has enough light emission rates.If this sheet metal 280 is a rectangle, its length direction can be attached at along the length direction of this cathode fluorescent tube 25 on this underframe 230, and also vertically the length direction of this cathode fluorescent tube 25 is attached on this underframe 230.
In addition, the intensity maximum that generates electromagnetic waves of these cathode fluorescent tube 25 high-pressure sides, therefore, this sheet metal 280 is arranged at this cathode fluorescent tube 25 high-pressure sides one side.If this module 22 backlight adopts the fluorescent tube of both-end input voltage as its light source, then these sheet metal 280 numbers are two and are arranged at this underframe 230 contiguous these fluorescent tube both-end positions respectively, promptly this sheet metal 280 is arranged at the position that this light source of vicinity of this underframe 230 generates electromagnetic waves, and reduces the interference of electromagnetic wave to liquid crystal panel 21.
Claims (10)
1. module backlight, it comprises a light source, a light guide plate and a framework, this framework is accommodated this light source and this light guide plate, it is characterized in that: this framework comprises a sheet metal, this sheet metal is to voltage input end setting that should light source, the electromagnetic wave that produces during in order to the voltage input end work of shielding light source.
2. module backlight as claimed in claim 1 is characterized in that: this framework is the glue frame.
3. module backlight as claimed in claim 2 is characterized in that: this framework comprises four end to end in regular turn four sidewalls and a underframe that extends from this four inside sidewalls in this glue frame.
4. module backlight as claimed in claim 1 is characterized in that: the voltage input end of this light source is one, and this sheet metal is one and to voltage input end setting that should light source.
5. module backlight as claimed in claim 1 is characterized in that: the voltage input end of this light source is two, and this sheet metal is two and respectively to voltage input end setting that should light source.
6. module backlight as claimed in claim 1 is characterized in that: this light source is a cathode fluorescent tube.
7. module backlight as claimed in claim 1 is characterized in that: this sheet metal is an aluminium flake.
8. module backlight as claimed in claim 1 is characterized in that: this sheet metal is the tin sheet.
9. module backlight as claimed in claim 1, it is characterized in that: this light guide plate comprises an incidence surface, one exiting surface adjacent and one and the exiting surface opposed bottom surface with this incidence surface, this module backlight further comprises an optical diaphragm group and a reflector plate, the exiting surface setting of contiguous this light guide plate of this optical diaphragm group, the bottom surface of contiguous this light guide plate of this reflector plate is provided with.
10. liquid crystal indicator, it comprises a liquid crystal panel and a module backlight, this module backlight and the stacked setting of this liquid crystal panel and for this liquid crystal panel provides planar light, it is characterized in that: this module backlight is the described module backlight of arbitrary claim in the claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201204779U CN201051199Y (en) | 2007-06-01 | 2007-06-01 | Backlight module assembly and LCD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201204779U CN201051199Y (en) | 2007-06-01 | 2007-06-01 | Backlight module assembly and LCD |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201051199Y true CN201051199Y (en) | 2008-04-23 |
Family
ID=39337694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201204779U Expired - Fee Related CN201051199Y (en) | 2007-06-01 | 2007-06-01 | Backlight module assembly and LCD |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201051199Y (en) |
-
2007
- 2007-06-01 CN CNU2007201204779U patent/CN201051199Y/en not_active Expired - Fee Related
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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: 20080423 Termination date: 20160601 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |