CN105093684A - Backlight source, display panel and display device - Google Patents
Backlight source, display panel and display device Download PDFInfo
- Publication number
- CN105093684A CN105093684A CN201510614206.8A CN201510614206A CN105093684A CN 105093684 A CN105093684 A CN 105093684A CN 201510614206 A CN201510614206 A CN 201510614206A CN 105093684 A CN105093684 A CN 105093684A
- Authority
- CN
- China
- Prior art keywords
- backlight
- ground lead
- display panel
- reflective sheet
- flexible pcb
- 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
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133605—Direct backlight including specially adapted reflectors
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2202/00—Materials and properties
- G02F2202/22—Antistatic materials or arrangements
Abstract
The invention provides a backlight source, a display panel and a display device. A ground lead is arranged on a flexible printed circuit board (FPC) of the backlight source, a reflective sheet is arranged to be a conductive reflective sheet, static electricity of the conductive reflective sheet is conducted to the ground lead through conductive adhesives, the static electricity is conducted out through the ground lead, therefore, the anti-static electricity capacity of the backlight source is improved, failure is prevented from being caused due to the fact that the backlight source is damaged by the static electricity, and the static electricity is prevented from damaging the display panel. In addition, a metal backboard is omitted, therefore, the thickness of the backlight source is reduced, and lightening and thinning of the backlight source can be guaranteed. The display panel and the display device manufactured by the backlight source also can have the good anti-static electricity capacity while lightening and thinning are guaranteed.
Description
Technical field
The invention belongs to technical field of liquid crystal display, more specifically relate to backlight, display panel and display device.
Background technology
In field of liquid crystal display, the antistatic effect of backlight is most important.As shown in Figure 1, existing backlight generally adopts metal backing, metal backing can pass through conductive double sided adhesive tape tape and FPCA (FlexiblePrintedCircuitAssembly, flexible printer circuit) or the upper ground wire of PCBA (finished product wiring board) be connected, by the ground wire of FPCA or PCBA, electrostatic is derived.Therefore metal backing is except stronger supporting capacity, also can play good electrostatic screening effect.When carrying out Electro-static Driven Comb ESD (Electro-Staticdischarge) to backlight and testing, metal backing preferentially can be attracted electrostatic and is led away by the ground wire of FPCA or PCBA, plays a protective role to display panel Panel and lamp bar.
As shown in Figure 2, along with the development trend that mobile Mobile product is lightening, increasing product eliminates the design of backlight metal backing.Greatly reduce the antistatic effect of backlight like this, add display panel and cause bad probability by electrostatic damage, add the complexity that display panel panel designs simultaneously.
When having metal backing, it can play electrostatic screening effect to the lamp bar of display panel panel and backlight inside; During without metal backing, backlight cannot play electrostatic shield effect, and need panel to bear ESD electric shock during ESD, backlight antistatic effect greatly reduces, and likely causes panel to damage or the situation that causes lamp bar to burn happens occasionally.
Summary of the invention
(1) technical matters that will solve
The technical matters that the embodiment of the present invention will solve is how ensureing that backlight is lightening while, improves the antistatic effect of backlight.
(2) technical scheme
In order to solve the problems of the technologies described above, the embodiment of the present invention provides a kind of backlight, the lamp bar comprise light guide plate, being connected by flexible PCB FPC and conducting reflective sheet;
Described flexible PCB FPC is provided with ground lead;
Described conducting reflective sheet contacts with described light guide plate and is arranged at described bottom surface of light guide plate;
Conducting resinl is filled with between described conducting reflective sheet and described flexible PCB FPC; Described conducting reflective sheet is electrically connected described ground lead by described conducting resinl, is derived by the electrostatic on described conducting reflective sheet by described ground lead.
Preferably, described ground lead comprises insulating regions and exposed region, and described exposed region is provided with the Lu Tong district than insulation layer field width.
Preferably, described conducting resinl is electrically connected with described Lu Tong district.
Preferably, described Lu Tong district is multiple, and described multiple Lu Tong district is equidistantly spaced.
Preferably, described ground lead is exposed wire.
Preferably, described ground lead is arranged around described lamp bar.
Preferably, described backlight also comprises the main flexible PCB FPC being arranged on described backlight outside, and described ground lead is connected with the earth terminal of described main flexible PCB FPC, the electrostatic on described ground lead is derived by the earth terminal of described main flexible PCB FPC.
The invention also discloses a kind of display panel, comprise above-mentioned backlight.
Preferably, described display panel also comprises the shading rubber belt be fixed on described flexible PCB, for blocking the light injecting display panel non-display area.
The invention also discloses a kind of display device, comprise above-mentioned display panel.
(3) beneficial effect
The invention provides backlight, display panel and display device.The application arranges ground lead on the flexible PCB FPC of backlight, reflector plate is set to conducting reflective sheet, again by conducting resinl by the static guiding of conducting reflective sheet to ground lead, by ground lead, electrostatic is derived, improve the antistatic effect of backlight, avoid backlight owing to causing bad by electrostatic damage, prevent electrostatic from causing damage to display panel.In addition, the backlight of the application's design eliminates metal backing, decreases the thickness of backlight, to ensure the lightening of backlight.The display panel of backlight manufacture of the present invention and display device is utilized to have lightening feature and good antistatic property equally.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the backlight having metal backing in prior art;
Fig. 2 is the structural representation without the backlight of metal backing in prior art;
Fig. 3 is the structural representation of lamp bar in prior art;
Fig. 4 is the structural representation of the backlight of the embodiment of the present invention;
Fig. 5 is the structural representation of the lamp bar of the embodiment of the present invention;
Fig. 6 is the lamp bar of the embodiment of the present invention and the main flexible PCB FPC connection diagram of backlight.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.Following examples for illustration of the present invention, but can not be used for limiting the scope of the invention.
Fig. 1 is the structural representation of the backlight in prior art with metal backing, as can be seen from the figure backlight outer setting of the prior art has metal backing 1, this metal backing 1 is fixed on backlight by glue frame 2, and metal backing 1 also contacts with reflector plate 14 simultaneously.Therefore, when ESD, the electrostatic of the electrostatic on reflector plate 14 and lamp bar 3 all can be derived by metal backing 1, and the electrostatic of backlight is discharged, and can play electrostatic screening effect to the lamp bar 3 of display panel panel8 and backlight inside.Reflector plate 14 is above provided with light guide plate 13, and what the light for being launched by light source led lamp 4 drew directed toward display panel 8 enters light direction, produces image by display panel 8 outgoing.As shown in Figure 1, LED 4 is arranged on the side of light guide plate 13, and by lamp bar 3 for multiple LED 4 provides electric energy.As shown in Figure 1 and Figure 2, be provided with shading rubber belt 5 above lamp bar FPC3, block for light light guide plate 13 and LED 4 being injected to display panel non-display area, in order to avoid enter display panel 8, wherein lamp bar 3 fixes shading rubber belt 5 by double faced adhesive tape 6.As shown in Figure 1 and Figure 2, the exiting surface of light guide plate 13 is sequentially provided with diffusion sheet 12, lower prismatic lens 11, upper prismatic lens 10, and the light for realizing light guide plate 13 to derive carries out spreading and assemble process.The light of upper prismatic lens 10 outgoing enters display panel 8 by lower polaroid 9, and the light of display panel 8 outgoing is penetrated by upper polaroid 7.Although the backlight of said structure has good antistatic effect, because it has the certain thickness that metal backing 1 occupies backlight, be unfavorable for that backlight is lightening.
As shown in Figure 2, in order to realize the lightening demand of backlight, removed by the metal backing 1 of backlight, the backlight without metal backing cannot play electrostatic shield effect, and need display panel panel8 to bear ESD electric shock during ESD, backlight antistatic effect greatly reduces.Meanwhile, as shown in Figure 3, no ground lead-in wire or earth terminal on lamp bar 3 in prior art, during ESD test, electrostatic may directly act on LED, causes lamp bar and burns.
For avoiding occurring in prior art that antistatic effect is poor, be unfavorable for lightening problem, the embodiment of the present invention provides a kind of backlight, and as shown in Figure 4, this backlight comprises light guide plate 13, the lamp bar 17 that connected by flexible PCB FPC and conducting reflective sheet 18.Conducting reflective sheet 18 contacts with light guide plate 13 and is arranged at light guide plate 13 bottom surface, is filled with conducting resinl 15, preferably selects conductive double sided adhesive tape between conducting reflective sheet and flexible PCB FPC.Flexible PCB FPC is provided with ground lead, and conducting reflective sheet 18 connects ground lead by conducting resinl 15, electrostatic on conducting reflective sheet 18 transfers to the ground lead on lamp bar 17 by conducting resinl 15, is derived by the electrostatic on conducting reflective sheet by ground lead.Make conducting reflective sheet 18 play the electrostatic screening effect of metalloid backboard, prevent electrostatic from causing damage to display panel panel8, cause bad, electrostatic damage lamp bar 17 when simultaneously avoiding ESD to test.
Further, ground lead comprises insulating regions and exposed region, and exposed region is provided with the Lu Tong district 16 than insulation layer field width, and conducting resinl 15 is electrically connected with Lu Tong district 16.During ESD test, electrostatic on conducting reflective sheet 18 transfers to Lu Tong district 16 by conducting resinl 15, by Lu Tong district 16, electrostatic is imported ground lead, then by ground lead, the electrostatic on conducting reflective sheet 18 is derived, make conducting reflective sheet 18 play the electrostatic screening effect of metalloid backboard.Electrostatic simultaneously on lamp bar 17 also can be inducted into ground lead by Lu Tong district 16; thus the electrostatic on lamp bar 17 is derived; guard lamp bar FPC17, not by electrostatic damage, improves the antistatic effect of monomer lamp bar 17, thus improves the ability of whole backlight release electrostatic.
As shown in Figure 5, further, Lu Tong district 16 is preferably multiple, and multiple Lu Tong district 16 is equidistantly spaced.The design in multiple Lu Tong district 16 adds the area of the contact of ground lead and conducting resinl, quicker electrostatic on reflector plate can be derived when ESD tests, also can derive the electrostatic on lamp bar 17 simultaneously more rapidly, improve the anlistatig ability of lamp bar 17 monomer.
As shown in Figure 5, further, ground lead is arranged around lamp bar 17, forms ring ground lead-in wire 19.To go between with designing ring the 19 electrostatic screening layers defining planar on flexible PCB FPC around lamp bar 17, add the area that ground lead contacts with conducting resinl, therefore quicker electrostatic on reflector plate can be derived when ESD tests, improve the ability of electrostatic prevention damage.Also can go out the electrostatic on lamp bar 17 simultaneously more fast, improve the anlistatig ability of lamp bar 17 monomer.
Further, ground lead can be also all exposed wire.The exposed part of such ground lead and the contact area of conducting resinl 15 can further increase, and can be derived by electrostatic on reflector plate faster relative to the ground lead arranging Lu Tong district 16.Now all exposed ground lead also can be arranged around lamp bar 17, forms the electrostatic screening layer of planar, accelerates the derivation of electrostatic, improves the ability of electrostatic prevention damage.
As shown in Figure 6, further, backlight also comprises the main flexible PCB FPC20 being arranged on backlight outside, and main flexible PCB FPC20 is provided with weld zone 21, and the ground lead of lamp bar 17 connects the earth terminal of main flexible PCB FPC by weld zone.Electrostatic on ground lead transfers on the earth terminal of main flexible PCB FPC by weld zone 21, is derived by the electrostatic on ground lead by the earth terminal of main flexible PCB FPC.
The embodiment of the invention also discloses a kind of display panel, it comprises above-mentioned backlight.The embodiment of the invention also discloses a kind of display device, display device comprises above-mentioned display panel.The display panel utilizing above-mentioned backlight to make and display device all have good antistatic effect, have lightening feature simultaneously.
The backlight that the embodiment of the present invention provides arranges ground lead on the flexible PCB FPC of lamp bar 17, and this ground lead connects conducting reflective sheet 18 by conducting resinl 15.During ESD test, the electrostatic on conducting reflective sheet 18 transfers to ground lead by conducting resinl 15, is derived by the electrostatic on conducting reflective sheet 18 by ground lead.Make conducting reflective sheet play the effect of electrostatic screening, protection display panel 8 is not by electrostatic damage, and the backlight simultaneously invented, owing to eliminating metal backing, so reduce the thickness of backlight, ensure that the lightening of backlight.In addition, the lamp bar 17 of the backlight of the embodiment of the present invention is provided with ground lead, and during ESD test, the electrostatic on lamp bar 17 is derived by ground lead, and guard lamp bar 17 is not by electrostatic damage.By arranging multiple Lu Tong district or ground lead is designed to all exposed wire on ground lead, the contact area of conducting resinl and ground lead can be increased, thus can quicker electrostatic on conducting reflective sheet 18 and on lamp bar 17 be derived.
Above embodiment is only for illustration of the present invention, but not limitation of the present invention.Although with reference to embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, various combination, amendment or equivalent replacement are carried out to technical scheme of the present invention, do not depart from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of right of the present invention.
Claims (10)
1. a backlight, is characterized in that, the lamp bar comprise light guide plate, being connected by flexible PCB and conducting reflective sheet;
Described flexible PCB is provided with ground lead;
Described conducting reflective sheet contacts with described light guide plate and is arranged at described bottom surface of light guide plate;
Conducting resinl is filled with between described conducting reflective sheet and described flexible PCB; Described conducting reflective sheet is electrically connected described ground lead by described conducting resinl, is derived by the electrostatic on described conducting reflective sheet by described ground lead.
2. backlight according to claim 1, is characterized in that, described ground lead comprises insulating regions and exposed region, and described exposed region is provided with the Lu Tong district than insulation layer field width.
3. backlight according to claim 2, is characterized in that, described conducting resinl is electrically connected with described Lu Tong district.
4. backlight according to claim 2, is characterized in that, described Lu Tong district is multiple, and described multiple Lu Tong district is equidistantly spaced.
5. backlight according to claim 1, is characterized in that, described ground lead is exposed wire.
6. the backlight according to any one of claim 1 to 5, is characterized in that, described ground lead is arranged around described lamp bar.
7. backlight according to claim 1, it is characterized in that, described backlight also comprises the main flexible PCB being arranged on described backlight outside, and described ground lead is connected with the earth terminal of described main flexible PCB, the electrostatic on described ground lead is derived by the earth terminal of described main flexible PCB.
8. a display panel, is characterized in that, comprises the backlight described in any one of claim 1 to 7.
9. display panel according to claim 8, is characterized in that, described display panel also comprises the shading rubber belt be fixed on described flexible PCB, for blocking the light injecting display panel non-display area.
10. a display device, is characterized in that, comprises the display panel described in claim 8 or 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510614206.8A CN105093684A (en) | 2015-09-23 | 2015-09-23 | Backlight source, display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510614206.8A CN105093684A (en) | 2015-09-23 | 2015-09-23 | Backlight source, display panel and display device |
Publications (1)
| Publication Number | Publication Date |
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| CN105093684A true CN105093684A (en) | 2015-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510614206.8A Pending CN105093684A (en) | 2015-09-23 | 2015-09-23 | Backlight source, display panel and display device |
Country Status (1)
| Country | Link |
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| CN (1) | CN105093684A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105717708A (en) * | 2016-04-29 | 2016-06-29 | 上海天马微电子有限公司 | Backlight module, display module and display device |
| CN105786244A (en) * | 2016-02-04 | 2016-07-20 | 京东方科技集团股份有限公司 | Display module and display device |
| CN105842893A (en) * | 2016-05-12 | 2016-08-10 | 乐视控股（北京）有限公司 | Display module and display device |
| CN106980209A (en) * | 2017-06-02 | 2017-07-25 | 厦门天马微电子有限公司 | Liquid crystal display device |
| CN108799937A (en) * | 2018-06-28 | 2018-11-13 | 武汉华星光电技术有限公司 | A kind of backlight module and display panel |
| CN109003988A (en) * | 2018-07-26 | 2018-12-14 | 武汉华星光电技术有限公司 | A kind of backlight module and display device |
| CN109147558A (en) * | 2017-06-27 | 2019-01-04 | 深圳市宇顺工业智能科技有限公司 | A kind of antistatic vehicle-mounted type display module |
| WO2019015316A1 (en) * | 2017-07-19 | 2019-01-24 | 京东方科技集团股份有限公司 | Backlight strip, backlight module, and display device |
| WO2019071817A1 (en) * | 2017-10-12 | 2019-04-18 | 惠科股份有限公司 | Display device |
| CN111864115A (en) * | 2020-07-28 | 2020-10-30 | 京东方科技集团股份有限公司 | Display panel and display device |
| TWI751708B (en) * | 2019-09-17 | 2022-01-01 | 元太科技工業股份有限公司 | Lighting module and display device |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US10302996B2 (en) | 2016-02-04 | 2019-05-28 | Boe Technology Group Co., Ltd. | Display module and display device |
| CN105786244A (en) * | 2016-02-04 | 2016-07-20 | 京东方科技集团股份有限公司 | Display module and display device |
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| CN109147558A (en) * | 2017-06-27 | 2019-01-04 | 深圳市宇顺工业智能科技有限公司 | A kind of antistatic vehicle-mounted type display module |
| US10674600B2 (en) | 2017-07-19 | 2020-06-02 | Boe Technology Group Co., Ltd. | Backlight bar, backlight module and display device |
| WO2019015316A1 (en) * | 2017-07-19 | 2019-01-24 | 京东方科技集团股份有限公司 | Backlight strip, backlight module, and display device |
| WO2019071817A1 (en) * | 2017-10-12 | 2019-04-18 | 惠科股份有限公司 | Display device |
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| US11162670B2 (en) | 2018-07-26 | 2021-11-02 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Backlight module and display device |
| TWI751708B (en) * | 2019-09-17 | 2022-01-01 | 元太科技工業股份有限公司 | Lighting module and display device |
| CN111864115B (en) * | 2020-07-28 | 2023-04-18 | 京东方科技集团股份有限公司 | Display panel and display device |
| CN111864115A (en) * | 2020-07-28 | 2020-10-30 | 京东方科技集团股份有限公司 | Display panel and display device |
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Application publication date: 20151125 |
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