CN2722563Y - Noise inhibiting structure of cold light sheet for backlight - Google Patents
Noise inhibiting structure of cold light sheet for backlight Download PDFInfo
- Publication number
- CN2722563Y CN2722563Y CN 200420081135 CN200420081135U CN2722563Y CN 2722563 Y CN2722563 Y CN 2722563Y CN 200420081135 CN200420081135 CN 200420081135 CN 200420081135 U CN200420081135 U CN 200420081135U CN 2722563 Y CN2722563 Y CN 2722563Y
- Authority
- CN
- China
- Prior art keywords
- cold light
- light film
- circuit board
- backlight
- light sheet
- 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
- 230000002401 inhibitory effect Effects 0.000 title abstract 2
- 238000001179 sorption measurement Methods 0.000 claims abstract description 13
- 230000002265 prevention Effects 0.000 claims description 10
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052693 Europium Inorganic materials 0.000 description 1
- 241001062009 Indigofera Species 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 239000005083 Zinc sulfide Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- JGIATAMCQXIDNZ-UHFFFAOYSA-N calcium sulfide Chemical compound [Ca]=S JGIATAMCQXIDNZ-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 description 1
- 238000012757 fluorescence staining Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 1
- 230000004936 stimulating effect Effects 0.000 description 1
- ZEGFMFQPWDMMEP-UHFFFAOYSA-N strontium;sulfide Chemical compound [S-2].[Sr+2] ZEGFMFQPWDMMEP-UHFFFAOYSA-N 0.000 description 1
- DRDVZXDWVBGGMH-UHFFFAOYSA-N zinc;sulfide Chemical compound [S-2].[Zn+2] DRDVZXDWVBGGMH-UHFFFAOYSA-N 0.000 description 1
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The utility model discloses a noise inhibiting structure of cold light sheet for backlight, compising a circuit board, a cold light sheet, an elastic adsorption element which is arranged between the circuit board and the cold light sheet. The cold light sheet is electrically connected with the circuit board. High frequency alternating current which is needed by the cold light sheet when working is provided by the circuit board. The vibration which is produced by the piezoelectricity of the cold light sheet can be absorbed by the elastic adsorption element. Thus, the noise produced by the vibration of the cold light sheet is prevented, and users can not be further misguided.
Description
[technical field]
The relevant a kind of noise prevention structure with cold light film backlight of the utility model refers in particular to a kind of portable electron device display module noise prevention structure with cold light film backlight that is used for.
[background technology]
Along with the civil nature of high-tech product is popularized, the electroluminescent technology of only using in the driver's cab of aircraft now extensively applies on the portable set in the past, for example: on the products such as mobile phone, personal digital assistant, remote controller, because EL mode backlight has that volume is little, in light weight, temperature is low, little power consumption, flicker free, luminous characteristic such as evenly, now replaces traditional LED-backlit mode gradually.The EL back light system is made up of EL lamp sheet and EL driver.The thickness of EL lamp sheet is generally less than 0.2mm, forms by having sprayed electroluminescent material on the dielectric base and being clipped between the two-layer electrode.The supplier of EL electroluminescent lamp can see through use different luminescent materials, for example zinc sulphide, calcium sulfide or strontium sulfide, and mix other composition such as magnesium, samarium, europium or add fluorescence staining agent etc. are adjusted the brightness and the color of light again.Change the change color that stimulating frequency can cause light equally, color changes to the direction of inclined to one side indigo plant when frequency increases, and color can change to green partially direction when frequency reduces.And used power supply is an A-battery on above-mentioned civilian portable set, but the EL electroluminescent lamp must drive with high pressure, usually requiring drive circuit to be converted to frequency to direct voltage expeditiously is the alternating voltage of 200Hz to 1KHz, but EL lamp sheet shows piezoelectric effect under the driving of high-frequency alternating current, produce noise thereby vibration takes place, this can mislead the user and think that electronic installation breaks down and causes unnecessary trouble.
[summary of the invention]
The utility model purpose is to provide a kind of noise prevention structure with cold light film backlight, can reduce the noise that cold light film produces because of vibration by this structure, further can not mislead the user.
The utility model noise prevention structure with cold light film backlight comprise circuit board, cold light film and be located at circuit board and cold light film between the elasticity adsorption piece, wherein cold light film and circuit board electrically connect, circuit board offers the required high-frequency alternating current of cold light film work and excites cold light film to send light source, and the elasticity adsorption piece can absorb the vibration that cold light film produces because of piezoelectric effect, thereby avoid the cold light film vibration to produce noise, thereby can avoid misleading the user.
[description of drawings]
Fig. 1 is the anti-schematic diagram of making structure of the utility model noise with cold light film backlight.
Fig. 2 is the anti-cross-sectional schematic of making structure of the noise with cold light film backlight shown in Figure 1.
[execution mode]
See also Fig. 1 and shown in Figure 2, the utility model noise prevention structure with cold light film backlight comprise circuit board 10, cold light film 11 and be located at circuit board 10 and cold light film 11 between elasticity adsorption piece 12.
In addition, elasticity adsorption piece 12 is located between cold light film 11 and the circuit board 10, and described in the present embodiment elasticity adsorption piece 12 is two-sided gum, so that cold light film 11 is positioned on the circuit board 10.When mounted, earlier elasticity adsorption piece 12 is sticked on the cold light film 11, the cold light film 11 that then will have elasticity adsorption piece 12 is compressed to the weld part 116,117 and the circuit board 10 that make conductive connecting pin 112,113 on the circuit board 10 and connects, then the weld part 116,117 with conductive connecting pin 112,113 is welded on the circuit board 10, electrically connects thereby make cold light film 11 be positioned on the circuit board 10 and with circuit board 10.
By above-mentioned set-up mode, drive circuit on the circuit board 10 is converted to high-frequency ac voltage with the direct voltage that electronic device battery provided, and provide to cold light film 11 by conductive connecting pin 112,113, and cold light film 11 is when work, elasticity adsorption piece 12 absorbs the vibration that cold light film 11 produces because of piezoelectric effect, thereby avoid cold light film 11 vibrations to produce noise, further avoid misleading the user.Simultaneously by between first junction 114,115 of conductive connecting pin 112,113 and weld part 116,117 and with the oblique extension in certain inclination angle, connecting portion 118,119 being set, there is certain height poor thereby make between first junction 114,115 and the weld part 116,117, generation cold light film 11 warpages in the time of therefore can avoiding between cold light film 11 and circuit board 10, gum being set and can cause the defective of conductive connecting pin 112,113 and circuit board 10 loose contacts.
Claims (4)
1, a kind of noise prevention structure with cold light film backlight comprises: circuit board, and this circuit board is used for driving cold light film; Cold light film is located on the circuit board and is electrically connected with circuit board, and this cold light film can drive by circuit board inspire light source, it is characterized in that: the elasticity adsorption piece that is provided with a vibration that is produced when absorbing cold light film work between circuit board and the cold light film.
2, the noise prevention structure with cold light film backlight as claimed in claim 1, it is characterized in that: cold light film one side is provided with the conductive connecting pin that electrically connects with circuit board.
3, the noise prevention structure with cold light film backlight as claimed in claim 1, it is characterized in that: the elasticity adsorption piece is two-sided gum.
4, the noise prevention structure with cold light film backlight as claimed in claim 2 is characterized in that: conductive connecting pin comprises first junction, the weld part that is connected with the circuit board drive circuit that parallels with cold light film and is located between first junction and the weld part and with the connecting portion of the oblique extension in certain inclination angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420081135 CN2722563Y (en) | 2004-07-27 | 2004-07-27 | Noise inhibiting structure of cold light sheet for backlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420081135 CN2722563Y (en) | 2004-07-27 | 2004-07-27 | Noise inhibiting structure of cold light sheet for backlight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2722563Y true CN2722563Y (en) | 2005-08-31 |
Family
ID=35012931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420081135 Expired - Fee Related CN2722563Y (en) | 2004-07-27 | 2004-07-27 | Noise inhibiting structure of cold light sheet for backlight |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2722563Y (en) |
-
2004
- 2004-07-27 CN CN 200420081135 patent/CN2722563Y/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 | ||
| 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 |