CN203771226U - Backlight device and liquid crystal display device using same - Google Patents
Backlight device and liquid crystal display device using same Download PDFInfo
- Publication number
- CN203771226U CN203771226U CN201420195044.XU CN201420195044U CN203771226U CN 203771226 U CN203771226 U CN 203771226U CN 201420195044 U CN201420195044 U CN 201420195044U CN 203771226 U CN203771226 U CN 203771226U
- Authority
- CN
- China
- Prior art keywords
- locating piece
- lighting device
- lgp
- back lighting
- fixed
- 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 - Lifetime
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 13
- 239000000758 substrate Substances 0.000 claims abstract description 21
- 239000002184 metal Substances 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 229920000965 Duroplast Polymers 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000009826 distribution Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000021615 conjugation Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Landscapes
- Fastening Of Light Sources Or Lamp Holders (AREA)
- Planar Illumination Modules (AREA)
Abstract
The utility model discloses a backlight device and a liquid crystal display device using the same, and relates to the technical field of liquid crystal display, and the backlight device is used for solving the problems that the manufacturing cost of the backlight device is high and the quality of display pictures is affected due to a positioning groove formed on a light guide plate in the backlight device. In the embodiment of the utility model, the backlight device comprises an LED (light emitting diode) light bar, a light guide plate and a rear housing, wherein the LED light bar is fixedly arranged on the rear housing, a positioning block is fixedly arranged on the substrate of the LED light bar, and the light incoming surface of the light guide plate props against the positioning block so as to clamp and fix the light guide plate in the rear housing. The liquid crystal display comprises the backlight device.
Description
Technical field
The utility model relates to lcd technology, relates in particular to back lighting device and applies its liquid crystal display.
Background technology
In liquid crystal display, back lighting device is for providing backlight to display floater, to demonstrate picture on display floater.
Fig. 1 shows existing back lighting device, and its light inlet mode is side entering type, and light source 11 is arranged on a side of LGP 12.Light source 11 adopts LED lamp bar conventionally, and it comprises substrate 111 and is fixed on a plurality of LED lamps 112 on substrate 111.LED lamp bar 11 and LGP 12 are all fixed in back cover (not shown in figure 1), thereby guarantee LED lamp bar 11 and LGP 12 accurate positionings, guarantee that spacing and the relative position between LED lamp bar 11 and LGP 12 meets the normal demand of working of back lighting device.
In order to guarantee that LGP 12 is fixed on the assigned address of back cover exactly, prior art need to adopt the mode that machined cuts on LGP 12, to form a plurality of locating slots 121, and projection that need to punching press is mated with locating slot 121 sizes on the assigned address of back cover, so that while LGP 12 being installed on back cover, the locating slot 121 of LGP 12 can fix in the projection of back cover, thereby realizes the accurate location of LGP 12.
State in realization in the process of location LGP 12, because the locating slot 121 forming on LGP 12 need to expend larger processing cost, caused the increase of back lighting device manufacturing cost, simultaneously, in the back lighting device course of work, the light at locating slot 121 places is subject to the impact of surface configuration, easily occurs clear zone and dark space, has affected thus the quality of display frame.
Utility model content
Embodiment of the present utility model provides a kind of back lighting device and applies its liquid crystal display, has solved the locating slot forming on LGP in existing back lighting device and has made back lighting device manufacturing cost high and affect the problem of display frame quality.
For achieving the above object, embodiment of the present utility model adopts following technical scheme:
A kind of back lighting device, comprise LED lamp bar, LGP and back cover, described LED lamp bar is fixed on described back cover, on the substrate of described LED lamp bar, is fixed with locating piece, the incidence surface of described LGP is against described locating piece, so that described LGP is fixed in described back cover.
Preferably, the number of described locating piece is a plurality of, and on described LGP incidence surface bearing of trend, described locating piece is uniformly distributed.
Alternatively, described locating piece is duroplasts piece.
Further, the fixed form between described locating piece and described substrate is fixing for boning.
Alternatively, the plated surface of described locating piece and described substrate contacts is covered with metal level, and the fixed form between described locating piece and described substrate is for being welded and fixed.
Preferably, described metal level is copper layer.
A liquid crystal display, comprises above-mentioned back lighting device.
The back lighting device that the utility model embodiment provides and applying in its liquid crystal display, owing to being fixedly installed locating piece on the substrate at LED lamp bar, LGP is fixed securely in back cover, therefore do not need to re-use mach mode offers locating slot on LGP, need to be on back cover yet the projection of punching press coupling, thereby saved processing cost, in addition, owing to need to not offering locating slot on LGP, therefore avoid the formation of clear zone and dark space, thereby guaranteed the quality of display frame.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of existing back lighting device;
Fig. 2 provides a kind of structural representation of back lighting device for the utility model embodiment;
The structural representation of locating piece and LED lamp bar in the another kind of back lighting device that Fig. 3 provides for the utility model embodiment.
The specific embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, the every other embodiment that those of ordinary skills obtain under the prerequisite of not making creative work, belongs to the scope that the utility model is protected.
The utility model embodiment provides a kind of back lighting device, as shown in Figure 2, this back lighting device comprises LED lamp bar 21, LGP 22 and back cover, LED lamp bar 21 is fixed on back cover, on the substrate 211 of LED lamp bar 21, be fixed with locating piece 23, the incidence surface 221 of LGP 22 is against locating piece 24, so that LGP 22 is fixed in back cover.
When the above-mentioned back lighting device of assembling, first LED lamp bar is fixed on back cover, because locating piece 23 is fixed on the substrate 211 of LED lamp bar 21, therefore locating piece 23 can not be subjected to displacement with respect to back cover, then LGP 22 is installed in back cover, make the incidence surface of LGP 22 against locating piece 23, the back side of LGP 22 and other marginal portion are contained in back cover, thereby LGP 22 is fixed in back cover securely.
In the back lighting device that the utility model embodiment provides, owing to being fixedly installed locating piece 23 on the substrate 211 at LED lamp bar 21, LGP 22 is fixed securely in back cover, therefore do not need to re-use mach mode offers locating slot on LGP 22, need to be on back cover yet the projection of punching press coupling, thereby saved processing cost, in addition, owing to need to not offering locating slot on LGP 22, therefore avoid the formation of clear zone and dark space, thereby guaranteed the quality of display frame.
Simultaneously, in prior art, on back cover, exist back cover deflection large during stamped bumps, locate inaccurate problem, and in the utility model embodiment, owing to need to not form projection on back cover, just can realize the location to LGP 22, therefore overcome and in prior art, located inaccurate defect, spacing and the relative position that can realize between LED lamp bar 21 and LGP 22 meet the requirements.
In the back lighting device that above-described embodiment is described, in order to make the whole incidence surface 221 of LGP 22 stressed even when contacting with locating piece 23, the number of locating piece 23 can be illustrated in figure 2 a plurality of, and on LGP 22 incidence surface 221 bearing of trend X, locating piece 23 is uniformly distributed.Locating piece 23 can be intervally arranged with the LED lamp 212 of LED lamp bar 21, also can be as shown in Figure 2, and two, interval LED lamp 212 arranges a locating piece 23.The distribution mode of locating piece 23 is not limited to above-mentioned being uniformly distributed, also can uneven distribution, concrete distribution mode can according to reality with time needs select.
In addition, in the back lighting device that above-described embodiment is described, when LGP 22 is fixed in back cover, the incidence surface 221 of LGP 22 will contact locating piece 23, because incidence surface 221 need to be accepted light and injects, therefore require surface very smooth, scratch incidence surface 221 when preventing locating piece 23 contact incidence surface 221, can select duroplasts piece as locating piece 23.Duroplasts itself had both had certain hardness, also had soft-surface simultaneously, thereby guaranteed can not scratch LGP 22 incidence surfaces 221 in the process of location LGP 22.
In the back lighting device that above-described embodiment is described, the fixed form between locating piece 23 and the substrate 211 of LED lamp bar 21 can be fixing for boning.This mode is simple, and Master Cost is low, and good fixing effect, can reduce the manufacturing cost of back lighting device.
In addition, in the back lighting device that above-described embodiment provides, also can there be the metal level 31 shown in Fig. 3 on the surface that locating piece 23 contacts with the substrate 211 of LED lamp bar 21 by plating, and the fixed form between locating piece 23 and this substrate 211 can be for being welded and fixed.In Fig. 3, be provided with pad 32 on substrate 211, these pads 32 can be prepared together with connecting the interconnection line of LED lamp 212, the metal level 31 on locating piece 23 can with substrate 211 on pad by welding procedure, as Reflow Soldering, weld together.
Metal level on locating piece 23 is preferably copper layer.Because the material of pad is generally copper on substrate, metal level is selected the copper of same material, during welding, can reach good conjugation grade.
The utility model embodiment also provides a kind of liquid crystal display, comprises the back lighting device that above-described embodiment is described.
In the liquid crystal display that the utility model embodiment provides, the back lighting device owing to having adopted above-described embodiment to describe, not only has lower manufacturing cost, and can obtain good display frame quality.
The above; it is only the specific embodiment of the present utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; the variation that can expect easily or replacement, within all should being encompassed in protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of described claim.
Claims (7)
1. a back lighting device, comprises LED lamp bar, LGP and back cover, and described LED lamp bar is fixed on described back cover, it is characterized in that, on the substrate of described LED lamp bar, be fixed with locating piece, the incidence surface of described LGP is against described locating piece, so that described LGP is fixed in described back cover.
2. back lighting device according to claim 1, is characterized in that, the number of described locating piece is a plurality of, and on described LGP incidence surface bearing of trend, described locating piece is uniformly distributed.
3. back lighting device according to claim 1 and 2, is characterized in that, described locating piece is duroplasts piece.
4. back lighting device according to claim 3, is characterized in that, the fixed form between described locating piece and described substrate is fixing for boning.
5. back lighting device according to claim 1 and 2, is characterized in that, the plated surface of described locating piece and described substrate contacts is covered with metal level, and the fixed form between described locating piece and described substrate is for being welded and fixed.
6. back lighting device according to claim 5, is characterized in that, described metal level is copper layer.
7. a liquid crystal display, is characterized in that, comprises the back lighting device described in claim 1-6 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420195044.XU CN203771226U (en) | 2014-04-21 | 2014-04-21 | Backlight device and liquid crystal display device using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420195044.XU CN203771226U (en) | 2014-04-21 | 2014-04-21 | Backlight device and liquid crystal display device using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203771226U true CN203771226U (en) | 2014-08-13 |
Family
ID=51288416
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420195044.XU Expired - Lifetime CN203771226U (en) | 2014-04-21 | 2014-04-21 | Backlight device and liquid crystal display device using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203771226U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137653A (en) * | 2015-08-27 | 2015-12-09 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN105526533A (en) * | 2016-01-28 | 2016-04-27 | 重庆惠科金扬科技有限公司 | Structure for preventing light bar from warping after aging and display device |
| CN106773305A (en) * | 2016-12-30 | 2017-05-31 | 奥英光电（苏州）有限公司 | A kind of guide-lighting board fixer |
| CN107390434A (en) * | 2017-09-19 | 2017-11-24 | 京东方科技集团股份有限公司 | Backlight module and its assemble method and display panel |
| CN109958940A (en) * | 2017-12-22 | 2019-07-02 | 深圳市海洋王照明工程有限公司 | Low ceiling light |
| WO2021227752A1 (en) * | 2020-05-13 | 2021-11-18 | 京东方科技集团股份有限公司 | Backlight module and display device |
-
2014
- 2014-04-21 CN CN201420195044.XU patent/CN203771226U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137653A (en) * | 2015-08-27 | 2015-12-09 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN105137653B (en) * | 2015-08-27 | 2020-04-17 | 京东方科技集团股份有限公司 | Backlight module and display device |
| CN105526533A (en) * | 2016-01-28 | 2016-04-27 | 重庆惠科金扬科技有限公司 | Structure for preventing light bar from warping after aging and display device |
| CN105526533B (en) * | 2016-01-28 | 2018-10-19 | 重庆惠科金扬科技有限公司 | A kind of structure and display device preventing warpage after lamp bar aging |
| CN106773305A (en) * | 2016-12-30 | 2017-05-31 | 奥英光电（苏州）有限公司 | A kind of guide-lighting board fixer |
| CN107390434A (en) * | 2017-09-19 | 2017-11-24 | 京东方科技集团股份有限公司 | Backlight module and its assemble method and display panel |
| WO2019056832A1 (en) * | 2017-09-19 | 2019-03-28 | 京东方科技集团股份有限公司 | Backlight module and assembly method thereof, and display panel |
| US11243431B2 (en) | 2017-09-19 | 2022-02-08 | Beijing Boe Optoelectronics Technology Co., Ltd. | Backlight module, method for assembling the same, and display panel |
| CN109958940A (en) * | 2017-12-22 | 2019-07-02 | 深圳市海洋王照明工程有限公司 | Low ceiling light |
| WO2021227752A1 (en) * | 2020-05-13 | 2021-11-18 | 京东方科技集团股份有限公司 | Backlight module and display device |
| US11747674B2 (en) | 2020-05-13 | 2023-09-05 | Beijing Boe Display Technology Co., Ltd. | Backlight module and display device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203771226U (en) | Backlight device and liquid crystal display device using same | |
| CN110061116B (en) | Mini-LED backlight and manufacturing method thereof | |
| CN202835065U (en) | Backlight module and display device | |
| CN104315415A (en) | Liquid crystal display device and backlight module | |
| CN103836460B (en) | A kind of framework, backlight source module and display unit | |
| CN104748013A (en) | Backlight module and display device | |
| CN205049842U (en) | Backlight module and display device | |
| US10591665B2 (en) | Backlight module and liquid crystal display device | |
| CN205229629U (en) | Backlight unit , display module assembly and display device | |
| CN105556355A (en) | Light diffusing lens and light emitting device having same | |
| CN105258027A (en) | Backlight module and display device | |
| CN104676375A (en) | Backlight module and liquid crystal display device comprising same | |
| CN202587621U (en) | Flexible printed circuit board (FPC) mounting jig | |
| CN203442723U (en) | Back plate, backlight module with back plate and display device with back plate | |
| CN104024930A (en) | Display device and television receiver | |
| CN103511991B (en) | The fixed structure of reflector plate in a kind of LED-backlit module | |
| CN104375232A (en) | Light guide plate, backlight module and displayer | |
| CN204187531U (en) | A kind of straight-down negative display module and display unit | |
| CN102798048A (en) | Backlight module | |
| CN205028006U (en) | Backlight module and liquid crystal display device | |
| US9022634B2 (en) | Backlight and display device | |
| CN105135286A (en) | Backlight module, display module and electronic device | |
| CN203792212U (en) | FPCB (Flexible Printed Circuit Board) and light guide plate assembly jig | |
| CN203464189U (en) | LED (Light Emitting Diode) lamp bar, backlight module and display device | |
| CN204062612U (en) | Luminescence component, backlight module and display unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140813 |