CN205103525U - Backlight unit and liquid crystal display equipment - Google Patents

Backlight unit and liquid crystal display equipment Download PDF

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Publication number
CN205103525U
CN205103525U CN201520907265.XU CN201520907265U CN205103525U CN 205103525 U CN205103525 U CN 205103525U CN 201520907265 U CN201520907265 U CN 201520907265U CN 205103525 U CN205103525 U CN 205103525U
Authority
CN
China
Prior art keywords
liquid crystal
screw
backlight module
backboard
led
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
Application number
CN201520907265.XU
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Chinese (zh)
Inventor
付常佳
叶芳岱
张金南
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Leshi Zhixin Electronic Technology Tianjin Co Ltd
Original Assignee
Leshi Zhixin Electronic Technology Tianjin Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Priority to CN201520907265.XU priority Critical patent/CN205103525U/en
Application granted granted Critical
Publication of CN205103525U publication Critical patent/CN205103525U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The embodiment of the utility model discloses backlight unit and liquid crystal display equipment. Backlight unit includes backplate, light guide plate and LED banks, the backplate has the accommodation space, the light guide plate is located in the accommodation space, the LED banks is located the lateral wall of backplate with between the income light terminal surface of light guide plate, the backplate with the lateral wall that the LED banks is adjacent has keeps away empty arch, it is provided with the screw hole that is used for with preceding frame screw halving in the sky arch to keep away. The liquid crystal display equipment that contains this backlight unit is lighted the back, because the screw has the great space of keeping away with the LED banks and separates in the screw hole, between the two heat -conduction consequently can significantly reduce to reduce the temperature rise of screw, and then improve user experience.

Description

A kind of backlight module and liquid crystal display
Technical field
The utility model relates to display technique field, particularly relates to a kind of backlight module and liquid crystal display.
Background technology
At present, the backlight module of liquid crystal display generally adopts LED (light-emittingdiode, light emitting diode are called for short LED) as light source, and according to the distributing position of light source, backlight module can be divided into straight lower incident type and side incident type two kinds.
As shown in Figure 1, in liquid crystal display, the primary structure of side injection type backlight module comprises: the backboard 11 with accommodation space, reflector plate 12, light guide plate 13 and blooming piece 14 that the accommodation space being positioned at backboard 11 is also sequentially placed, LED (light-emittingdiode between the sidewall and the light inlet end face of light guide plate 13 of backboard 11, light emitting diode, is called for short LED) lamp group 15, and to be positioned at above blooming piece 14 and with the glue frame 16 of backboard 11 assembly.
Except backlight module, the primary structure of liquid crystal display also comprises liquid crystal panel 17 and front frame 18, wherein, liquid crystal panel 17 assembly is in the front side of backlight module, front frame 18 is from the front side of liquid crystal panel 17 and backlight module assembly, concrete, adopt screw 19 through the sidewall thread interlocking of the sidewall of front frame 18, the sidewall of glue frame 16 and backboard 11.
The defect that above-mentioned prior art exists is, when liquid crystal display is lit, LED thermal value in LED group 15 is larger, backboard 11 is also higher near the part temperature rise of LED group 15, thus make also higher with the temperature rise of the screw 19 of backboard 11 screw thread interlocking, because this kind of screw is usually exposed on liquid crystal display surface, if user touches because of carelessness, may discomfort be caused, even be burned.
Utility model content
The utility model embodiment provides a kind of backlight module and liquid crystal display, to reduce the temperature rise of liquid crystal display surface exposure screw.
The backlight module that the utility model embodiment provides, comprise backboard, light guide plate and LED group, described backboard has accommodation space, described light guide plate is positioned at described accommodation space, described LED group is between the sidewall and the light inlet end face of described light guide plate of described backboard, the sidewall that described backboard is adjacent with described LED group has empty avoiding projection, described empty avoiding projection is provided with for the screw hole with front frame screw thread interlocking.
Preferably, described empty avoiding projection is that trapezoidal empty avoiding is protruding, or described empty avoiding projection disconnects mutually with the part of described backboard sidewall except empty avoiding projection.
Preferably, the relatively described screw hole of described empty avoiding projection symmetrically structure.
More excellent, described LED group comprises the heat sink and LED lamp bar that are connected, and the part of diapire between heat sink and empty avoiding projection of described backboard has emptiness avoiding hole.
Further, described emptiness avoiding hole is positioned at the below of screw hole and LED group opposed area.
More excellent, described emptiness avoiding hole is not less than the screw hole diameter of three times along the size of LED group length direction.
Optionally, described heat sink comprises L shape heat sink or flat plate radiation plate.
In the technical scheme of the utility model embodiment, the sidewall that backboard is adjacent with LED group has empty avoiding projection, empty avoiding projection is provided with for the screw hole with front frame screw thread interlocking, after the liquid crystal display comprising this backlight module is lit, because screw hole inner bolt and LED group have larger empty avoiding interval, therefore can greatly reduce heat transfer between the two, thus reduce the temperature rise of screw, and then improve Consumer's Experience.
The utility model embodiment still provides a kind of liquid crystal display, comprise the backlight module according to aforementioned arbitrary technical scheme, and liquid crystal panel, front frame and screw, wherein: described liquid crystal panel set is assigned in the front side of backlight module, described front frame assembly is in the front side of backlight module and liquid crystal panel, and described screw is through the screw hole interlocking on the sidewall of front frame and the empty avoiding projection of backboard.
Preferably, described screw is sunk screw, and described screw hole is countersunk screw hole.
Optionally, described liquid crystal display comprises the liquid crystal display of liquid crystal TV set, liquid crystal display and mobile terminal.
After the liquid crystal display of the utility model embodiment is lit, because screw hole inner bolt and LED group have larger empty avoiding interval, therefore can greatly reduce heat transfer between the two, thus reduce the temperature rise of screw, and then promote Consumer's Experience.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment 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 embodiments more of the present utility model, 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 longitudinal cross-section schematic diagram of prior art one liquid crystal display;
Fig. 2 is the transverse sectional view of the utility model first embodiment backlight module and front frame assembly;
Fig. 3 is the transverse sectional view of the utility model second embodiment backlight module and front frame assembly;
Fig. 4 is the transverse sectional view of the utility model the 3rd embodiment backlight module and front frame assembly;
Fig. 5 is the longitudinal cross-section schematic diagram of the utility model the 3rd embodiment backlight module and front frame assembly;
Fig. 6 is the transverse sectional view of the utility model the 4th embodiment backlight module and front frame assembly;
Fig. 7 is the transverse sectional view of the utility model the 5th embodiment backlight module and front frame assembly.
Reference numeral:
Prior art part:
11-backboard; 12-reflector plate; 13-light guide plate; 14-blooming piece; 15-LED lamp group; 16-glue frame;
17-liquid crystal panel; Frame before 18-; 19-screw.
The utility model embodiment part:
51-backboard; 52-reflector plate; 53-light guide plate; 54-blooming piece; 55-LED lamp group;
511-empty avoiding is protruding; 551-heat sink; 552-LED lamp bar; 512-emptiness avoiding hole; 56-glue frame;
57-liquid crystal panel; Frame before 58-; 59-screw.
Embodiment
For making the object of the utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 2, the backlight module that the utility model embodiment provides, comprise backboard 51, light guide plate is (not shown, can with reference to light guide plate 53 shown in figure 5) and LED group 55, backboard 51 has accommodation space, this accommodation space is surrounded by four sidewalls of backboard 51 and diapire, light guide plate is positioned at accommodation space, LED group 55 is between the sidewall and the light inlet end face of light guide plate of backboard 51, the sidewall that backboard 51 is adjacent with LED group 55 has empty avoiding projection 511, empty avoiding projection 511 is provided with for (not shown with the screw hole of front frame 58 screw thread interlocking, the i.e. corresponding position that screw 59 is set).
According to the setting position of LED group 55, the backlight module that the utility model embodiment provides is side injection type backlight module, and the light that in LED group 55, LED sends is injected in light guide plate from the light inlet end face of light guide plate.LED group 55 comprises the heat sink 551 and LED lamp bar 552 that are connected, the particular type of heat sink 551 is not limit, can be such as L shape heat sink or flat plate radiation plate, heat sink preferably adopts heat conductivility better and the aluminium material of lighter weight, and LED lamp bar 552 is provided with plurality of LEDs.Except said structure part, the structure of backlight module also comprises reflector plate 52, blooming piece 54, glue frame 56 etc. usually, can with reference to shown in figure 5.
In the technical scheme of the utility model embodiment, the sidewall that backboard 51 is adjacent with LED group 55 has empty avoiding projection 511, empty avoiding projection 511 is provided with for the screw hole with front frame 58 screw thread interlocking, after the liquid crystal display comprising this backlight module is lit, because screw hole inner bolt 59 and LED group 55 have larger empty avoiding interval, therefore heat transfer between the two can be greatly reduced, thus reduce the temperature rise of screw 59, minimizing user touches sense of discomfort during screw 59 by mistake, improves Consumer's Experience.
Shown in Fig. 2, empty avoiding protruding 511 is that trapezoidal empty avoiding is protruding, and this profile design is conducive to the structural strength demand meeting backboard 51, can be shaping by the Sheet Metal Forming Technology of backboard.In addition, the protruding 511 relative screw holes of empty avoiding symmetrically structure, can make the heat transfer of screw hole both sides substantially suitable, thus make above-mentioned beneficial effect of the present utility model more obvious.As shown in Figure 3, in another embodiment of the present utility model, empty avoiding protruding 511 disconnects mutually with the other parts of backboard 51 sidewall, also can play the effect reducing screw temperature rise preferably.
Please refer to Fig. 4 and embodiment illustrated in fig. 5, the part of diapire between heat sink 551 and empty avoiding projection 511 of backboard 51 has emptiness avoiding hole 512.Design emptiness avoiding hole 512 can reduce the heat transfer area between screw hole place and LED group 55, thus reduces the temperature rise of screw 59 further.Preferably, emptiness avoiding hole 512 is positioned at the below of screw hole and LED group 55 opposed area, the part thermally conductive pathways be positioned at below screw hole and LED group 55 opposed area due to the diapire of backboard 51 is the shortest, heat conduction rate is the highest, emptiness avoiding hole 512 is opened in this position and can greatly reduces heat transfer between the two, thus more effectively reduce the temperature rise of screw 59.Emptiness avoiding hole 512 is preferably not less than the screw hole diameter of three times along the size of LED group 55 length direction, with the minimizing heat transfer compared with limits, but consider the structural strength of backboard 51, emptiness avoiding hole 512 along the size of LED group 55 length direction also should not design excessive, can design in conjunction with the one-piece construction size of backboard 51 and requirement of strength.It is worth mentioning that, the quantity of emptiness avoiding hole 512 is not limited to one, also can adopt the structure shown in Fig. 6, arranges multiple emptiness avoiding hole 512, as long as can meet structural strength.
In embodiment shown in Fig. 4 and Fig. 5, screw 59 is through the sidewall thread interlocking of the sidewall of front frame 58, the sidewall of glue frame 56 and backboard 51.In other embodiment of the present utility model, after glue frame 56 and backboard 51 assembly, empty avoiding projection 511 is not blocked by the sidewall of glue frame, and therefore, screw 59 is through the screw hole screw thread interlocking of sidewall directly and in empty avoiding projection 511 of front frame 58.
Can with reference to shown in figure 5, the utility model embodiment still provides a kind of liquid crystal display, comprise the backlight module according to aforementioned arbitrary technical scheme, and liquid crystal panel 57, front frame 58 and screw 59, wherein: liquid crystal panel 57 assembly is in the front side of backlight module, the assembly of front frame 58 is in the front side of backlight module and liquid crystal panel 57, and screw 59 is through the screw hole interlocking in the empty avoiding projection 511 of the sidewall of front frame 58, the sidewall of glue frame 56 and backboard 51.
The particular type of display device is not limit, such as, can be the liquid crystal display of liquid crystal TV set, liquid crystal display and mobile terminal, etc.As previously mentioned, according to the project organization of backlight module group rubber frame, screw also can through the screw hole interlocking of the sidewall of front frame directly and in the empty avoiding projection of backboard.
It is worth mentioning that at this, be connected with the reliable of backboard for realizing front frame, the non-light incidence side sidewall of front frame and backboard also may be connected by screw, because the non-light incidence side sidewall distance LED lamp bar of backboard is far away, the temperature rise caused is affected less by LED, therefore, the similar aforesaid design of unnecessary employing, adopts conventional continuous level structure.
After the liquid crystal display of the utility model embodiment is lit, because screw hole inner bolt 59 and LED group 55 have larger empty avoiding interval, therefore can greatly reduce heat transfer between the two, thus reduce the temperature rise of screw 59, and then promote Consumer's Experience.
Preferably, as shown in Figure 7, screw 59 adopts sunk screw, and described screw hole is countersunk screw hole.The nut of sunk screw does not exceed the sidewall surfaces of front frame 58, not easily seeing in appearance like this from liquid crystal display, makes the outward appearance of display device more attractive in appearance, in addition, the nut of sunk screw also should not be touched by user, thus further improves Consumer's Experience.
Last it is noted that above embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to previous embodiment, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of each embodiment technical scheme of the utility model.

Claims (10)

1. a backlight module, comprise backboard, light guide plate and LED group, described backboard has accommodation space, and described light guide plate is positioned at described accommodation space, and described LED group, between the sidewall and the light inlet end face of described light guide plate of described backboard, is characterized in that:
The sidewall that described backboard is adjacent with described LED group has empty avoiding projection, described empty avoiding projection is provided with for the screw hole with front frame screw thread interlocking.
2. backlight module according to claim 1, is characterized in that, described empty avoiding projection is that trapezoidal empty avoiding is protruding, or described empty avoiding projection disconnects mutually with the part of described backboard sidewall except empty avoiding projection.
3. backlight module according to claim 1, is characterized in that, the relatively described screw hole of described empty avoiding projection symmetrically structure.
4. the backlight module according to any one of claims 1 to 3, is characterized in that, described LED group comprises the heat sink and LED lamp bar that are connected, and the part of diapire between heat sink and empty avoiding projection of described backboard has emptiness avoiding hole.
5. backlight module according to claim 4, is characterized in that, described emptiness avoiding hole is positioned at the below of screw hole and LED group opposed area.
6. backlight module according to claim 5, is characterized in that, described emptiness avoiding hole is not less than the screw hole diameter of three times along the size of LED group length direction.
7. backlight module according to claim 4, is characterized in that, described heat sink comprises L shape heat sink or flat plate radiation plate.
8. a liquid crystal display, is characterized in that, comprises the backlight module according to any one of claim 1 ~ 7, and liquid crystal panel, front frame and screw, wherein:
Described liquid crystal panel set is assigned in the front side of backlight module, and described front frame assembly is in the front side of backlight module and liquid crystal panel, and described screw is through the screw hole interlocking on the sidewall of front frame and the empty avoiding projection of backboard.
9. liquid crystal display according to claim 8, is characterized in that, described screw is sunk screw, and described screw hole is countersunk screw hole.
10. liquid crystal display according to claim 8 or claim 9, it is characterized in that, described liquid crystal display comprises the liquid crystal display of liquid crystal TV set, liquid crystal display and mobile terminal.
CN201520907265.XU 2015-11-13 2015-11-13 Backlight unit and liquid crystal display equipment Expired - Fee Related CN205103525U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520907265.XU CN205103525U (en) 2015-11-13 2015-11-13 Backlight unit and liquid crystal display equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520907265.XU CN205103525U (en) 2015-11-13 2015-11-13 Backlight unit and liquid crystal display equipment

Publications (1)

Publication Number Publication Date
CN205103525U true CN205103525U (en) 2016-03-23

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Family Applications (1)

Application Number Title Priority Date Filing Date
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Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017080148A1 (en) * 2015-11-13 2017-05-18 乐视控股(北京)有限公司 Backlight module and liquid crystal display device
CN108093602A (en) * 2016-11-22 2018-05-29 三星显示有限公司 Display device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017080148A1 (en) * 2015-11-13 2017-05-18 乐视控股(北京)有限公司 Backlight module and liquid crystal display device
CN108093602A (en) * 2016-11-22 2018-05-29 三星显示有限公司 Display device
US10820455B2 (en) 2016-11-22 2020-10-27 Samsung Display Co., Ltd. Display device
CN108093602B (en) * 2016-11-22 2021-01-22 三星显示有限公司 Display device

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