CN104033788B - Backlight and splicing display device - Google Patents

Backlight and splicing display device Download PDF

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Publication number
CN104033788B
CN104033788B CN201410217594.1A CN201410217594A CN104033788B CN 104033788 B CN104033788 B CN 104033788B CN 201410217594 A CN201410217594 A CN 201410217594A CN 104033788 B CN104033788 B CN 104033788B
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Prior art keywords
backlight
limitting casing
sub
limiting section
illuminating part
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CN201410217594.1A
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CN104033788A (en
Inventor
陈秀云
孙凌宇
张志丹
尹大根
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BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
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BOE Technology Group Co Ltd
Beijing BOE Display Technology Co Ltd
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Abstract

The invention provides a kind of backlight, this backlight comprises multiple sub-backlight, each described sub-backlight comprises the first limitting casing and the second limitting casing, the first confined planes that described first limitting casing has two end faces and is connected between two described end faces, described first confined planes is towards the middle part of described sub-backlight, described second limitting casing has the second confined planes, described second limitting casing is formed on an end face of described first limitting casing, and described second confined planes is towards the light-emitting window of described sub-backlight, first limitting casing of adjacent two described sub-backlights forms as one.Correspondingly, the present invention also provides a kind of splicing display device.Compared with prior art, the present invention can reduce the width of the splicing seams of splicing display device.

Description

Backlight and splicing display device
Technical field
The present invention relates to technical field of liquid crystal display, particularly, relate to a kind of backlight and the splicing display device comprising this backlight.
Background technology
Along with the fast development of all sectors of society, at some special occasions, as occasions such as outdoor square, market, studio and stadium, usually need large-sized display unit is installed, because current display is difficult to accomplish too large size, therefore usually adopt the mode of multiple display floater splicing, form mosaic display screen.
And backlight of the prior art adopts straight-down negative and side entering type two kinds of modes.The structure adopting the display unit of direct-light-type backlight as shown in Figure 1, illuminating part 1 is arranged on the below of blooming piece 2, but this mode makes the thickness of backlight thicker, thus makes to use the thickness of the display unit of direct-light-type backlight thicker.The structure of the display unit of application side-edge type backlight as shown in Figure 2, because illuminating part 1 is arranged on the side of light guide plate 3, thus the thickness of backlight can be reduced, but this mode can make the frame of display unit wider, therefore when splicing display device application side-edge type backlight, make the wider width of splicing seams, affect the display effect of picture.
Be illustrated in figure 3 the structural representation of existing splicing display device.Two adjacent display floaters 4 are separately positioned on corresponding carriage 5, therefore, the width of the splicing seams of mosaic display screen and the width sum of two carriages 5 corresponding (that is, L+R), make the wider width of splicing seams, affect the display effect of picture.
Therefore, the width how reducing the splicing seams of splicing display device becomes this area technical problem urgently to be resolved hurrily.
Summary of the invention
The object of the present invention is to provide a kind of backlight, to reduce the width of the splicing seams of the splicing display device using this backlight.
To achieve these goals, the invention provides a kind of backlight, this backlight comprises multiple sub-backlight, each described sub-backlight comprises the first limitting casing and the second limitting casing, the first confined planes that described first limitting casing has two end faces and is connected between two described end faces, described first confined planes is towards the middle part of described sub-backlight, described second limitting casing has the second confined planes, described second limitting casing is formed on an end face of described first limitting casing, and described second confined planes is towards the light-emitting window of described sub-backlight, first limitting casing of adjacent two described sub-backlights forms as one.
Preferably, the basal surface of adjacent two described second limitting casings is provided with the illuminating part installing plate deviating from described second confined planes and extend, this illuminating part installing plate is for installing the illuminating part of adjacent two described sub-backlights.
Preferably, the illuminating part of described sub-backlight is integration LED lamp bar.
Preferably, described illuminating part installing plate is provided with thickness direction along this illuminating part installing plate through the installing hole of described illuminating part installing plate, the illuminating part of adjacent two described sub-backlights is integrated on same circuit board, and is fastened in described installing hole.
Preferably, described illuminating part is the integration LED lamp bar of double-side.
Preferably, described sub-backlight also comprises the light guide plate corresponding to described illuminating part.
Preferably, described sub-backlight also comprises blooming piece and the 3rd limitting casing, described second limitting casing has the joint face in the middle part of described sub-backlight, this joint face and described second confined planes adjoin, described 3rd limitting casing is fixed on described joint face, and described blooming piece can be limited to predeterminated position by described 3rd limitting casing.
Preferably, described 3rd limitting casing comprises locating part and connector, described joint face is provided with groove, described connector is fastened in described groove, and protrude towards the middle part of described sub-backlight, the second limiting section that described locating part comprises the first limiting section and is connected with this first limiting section, described first limiting section is arranged on described joint face, described second limiting section is arranged on described connector, and described blooming piece arranges the predeterminated position that described first limiting section and described second limiting section limit.
Preferably, described locating part also comprises the 3rd limiting section, and described second limiting section is arranged between described first limiting section and described 3rd limiting section, and described connector is arranged between described 3rd limiting section and described groove.
Accordingly, the present invention also provides a kind of splicing display device, comprises backlight and multiple display floater, and described backlight is above-mentioned backlight provided by the present invention, the corresponding described display floater of every sub-backlight of this backlight.
In the present invention, first limitting casing of adjacent two described sub-backlights forms as one structure, thus the distance between the display floater that adjacent two described sub-backlights are corresponding is the thickness of described first limitting casing, thus the distance reduced between adjacent two described display floaters, and then reduction uses the width of the splicing seams of the splicing display device of described backlight.On the other hand, the illuminating part of described sub-backlight is arranged on described illuminating part installing plate, thus can reduce the thickness of backlight, thus reduce the thickness of described splicing display device.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for description, is used from explanation the present invention, but is not construed as limiting the invention with detailed description of the invention one below.In the accompanying drawings:
Shown in Fig. 1 is the structural representation of existing direct-light-type backlight;
Shown in Fig. 2 is the structural representation of existing side-edge type backlight;
Shown in Fig. 3 is the structural representation of existing splicing display device;
Shown in Fig. 4 is the top view of the first limitting casing in embodiments of the present invention, the second limitting casing and the 3rd limitting casing;
Shown in Fig. 5 is the A-A ' sectional view of Fig. 4;
Shown in Fig. 6 is the structural representation of splicing display device provided by the present invention.
Description of reference numerals
1,40: illuminating part; 2,60: blooming piece; 3,70: light guide plate; 4,80: display floater; 5: carriage; 10: the first limitting casings; 11: the first confined planes; 20: the second limitting casings; 21: the second confined planes; 22: joint face; 30: illuminating part installing plate; 50: the three limitting casings; 51: locating part; 51a: the first limiting section; 51b: the second limiting section; 51c: the three limiting section; 52: connector.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
As an aspect of of the present present invention, a kind of backlight is provided, this backlight comprises multiple sub-backlight, as shown in Figure 4 and Figure 5, every sub-backlight comprises the first limitting casing 10 and the second limitting casing 20, first limitting casing 10 has two end faces and is connected to the first confined planes 11 between two described end faces, first confined planes 11 towards described sub-backlight middle part (as in Fig. 4 " middle part " that identify), second limitting casing 20 has the second confined planes 21, second limitting casing 20 is formed on an end face of the first limitting casing 10, and the second confined planes 21 is towards the light-emitting window of described sub-backlight, first limitting casing 10 of adjacent two described sub-backlights forms as one.
As shown in Figure 6, in the display unit using described backlight, this display unit comprises described backlight and the display floater corresponding with each described sub-backlight of described backlight, and two end faces of the first limitting casing 10 refer to the surface of the light-emitting window towards described sub-backlight of the first limitting casing 10 and the surface deviating from the light-emitting window of described sub-backlight of the first limitting casing 10; First confined planes 11 of the first limitting casing 10 refers to and the face that the side of the display floater corresponding to described sub-backlight contacts, second confined planes 21 of the second limitting casing 20 refers to and the face that the bottom surface of the display floater corresponding to described sub-backlight contacts, first confined planes 11 can prevent display floater to be moved along the length of this display floater or width, and the second confined planes 21 can prevent display floater to be moved along the thickness direction of this display floater.
In the present invention, first limitting casing 10 of adjacent two sub-backlights forms as one, namely, adjacent two sub-backlights share first limitting casing 10, thus make the distance between adjacent two display floaters corresponding with adjacent two sub-backlights be the thickness of the first limitting casing 10, compared with prior art (distance between two adjacent display floaters is the thickness sum of the first limitting casing of corresponding two sub-backlights), thus the width of the splicing seams of the splicing display device using described backlight can be reduced.
In the present invention, the description of described sub-backlight is applicable to the multiple sub-backlight of described backlight, namely each described sub-backlight has identical structure.
Described sub-backlight can be direct-light-type backlight, also can be side-edge type backlight, and in order to reduce the thickness of described sub-backlight, as a kind of preferred embodiment of the present invention, described sub-backlight is side-edge type backlight.As shown in Figure 5, the basal surface of the second limitting casing 20 is provided with the illuminating part installing plate 30 deviating from the second confined planes 21 and extend, this illuminating part installing plate 30 is for installing the illuminating part 40 of adjacent two described sub-backlights, thus the backboard reducing described backlight is on the impact of illuminating part 40.Easy understand is, the illuminating part 40 of adjacent two described sub-backlights can be arranged on two sides of same illuminating part installing plate 30.
Further, the illuminating part 40 of described sub-backlight can be integration LED lamp bar.Particularly, chip on board can be adopted to encapsulate the mode of (chiponboard, COB) by multiple adhesive die attachment on circuit boards, form integration LED lamp bar, to improve the production efficiency of illuminating part, save the cost of LED package.
Further, illuminating part installing plate 30 can be provided with thickness direction along this illuminating part installing plate 30 through the installing hole of illuminating part installing plate 30, the illuminating part 40 of adjacent two described sub-backlights is integrated on same circuit board, and be fastened in described installing hole, thus reduce illuminating part installing plate 30 and the space shared by illuminating part.Such as, illuminating part installing plate 30 thickness is 1.8mm, integration LED lamp bar thickness is 1.4mm, wherein, common board 0.8mm, so in embodiments of the present invention, the gross thickness of illuminating part installing plate 30 and two integrated light-emitting diodes is 1.4+1.4-0.8=2.0mm, and when being directly attached on the surface of illuminating part installing plate 30 by adjacent two integrated diode lamp bars, gross thickness is 1.4+1.4+1.8=4.6mm.
Further, illuminating part 40 can be the light-emitting diode light bar of double-side, the light-emitting diode light bar of the integrated double-side of technique of two-sided chip on board (COB) can be adopted, compared with the light-emitting diode light bar of one side luminescence, the thickness of illuminating part 40 can reduce further.
It is easily understood that as shown in Figure 5, illuminating part 40 protrude from illuminating part installing plate 30 with the surface of illuminating part 40 homonymy, have an impact with the light preventing illuminating part installing plate 30 pairs of illuminating parts 40 from sending.
Further, as shown in Figure 6, described sub-backlight can also comprise the light guide plate 70 corresponding to illuminating part 40, and the light that illuminating part 40 is launched injects light guide plate 70 by the plane of incidence of light guide plate 70, thus launches area source by the exiting surface of light guide plate 70.
Further, as shown in Figure 6, described sub-backlight can also comprise blooming piece 60 and the 3rd limitting casing 50, second limitting casing 20 has the joint face 22 in the middle part of described sub-backlight, joint face 22 and the second confined planes 21 adjoin, 3rd limitting casing 50 is fixed on joint face 22, and blooming piece 60 can be limited to predeterminated position by the 3rd limitting casing 50.Blooming piece 60 comprises diffuser plate and prism plate.When blooming piece 60 is arranged on described predeterminated position, the area source that described blooming piece can be launched by the exiting surface of light guide plate 70 irradiates towards the display floater corresponding with described sub-backlight after carrying out the convergence in diffusion and certain angle.
For the ease of producing the assembling between each several part device of backlight, further, as shown in Figure 4 and Figure 5, 3rd limitting casing 50 can comprise locating part 51 and connector 52, the joint face 22 of the second limitting casing 20 is provided with groove, connector 52 is fastened in described groove, and protrude towards the middle part of described sub-backlight, the second limiting section 51b that locating part 51 comprises the first limiting section 51a and is connected with the first limiting section 51a, first limiting section 51a is arranged on joint face 22, second limiting section 51b is arranged on connector 52, blooming piece 60 arranges the predeterminated position that the first limiting section 51a and the second limiting section 51b limits.First limiting section 51a can prevent blooming piece 60 along its length or width be moved; Second limiting section 51b can prevent blooming piece 60 to be moved along its thickness direction; Connector 52 can so that frame-shaped construction (the first limitting casing 10, second limitting casing 20 and the 3rd limitting casing 50) four edges between connection.
Further, as shown in Figure 5, locating part 51 can also comprise the 3rd limiting section 51c, second limiting section 51b is arranged between the first limiting section 51a and the 3rd limiting section 51c, connector 52 is arranged between the 3rd limiting section 51c and described groove, thus makes to keep relative stability between connector 52 and locating part 51.
In the present invention, the first limitting casing 10, second limitting casing 20 and the 3rd limitting casing 50 can adopt the mode of precision die injection moulding to obtain.
As another aspect of the present invention, provide a kind of splicing display device, comprise backlight and multiple display floater, described backlight is above-mentioned backlight provided by the present invention, as shown in Figure 6, and the corresponding display floater 80 of every sub-backlight of this backlight.Display floater 80 is arranged in the space that the first limitting casing 10 of corresponding sub-backlight and the second limitting casing 20 limit.
It is more than the description to embodiment provided by the present invention, can find out, in backlight provided by the present invention, first limitting casing of adjacent two sub-backlights forms as one structure, thus the distance between the display floater that adjacent two sub-backlights are corresponding is the thickness of the first limitting casing, thus the distance reduced between adjacent two display floaters, and then reduction uses the width of the splicing seams of the splicing display device of described backlight.On the other hand, the illuminating part of described sub-backlight is arranged on illuminating part installing plate, thus can reduce the thickness of backlight, thus reduce the thickness of described splicing display device.
Be understandable that, the illustrative embodiments that above embodiment is only used to principle of the present invention is described and adopts, but the present invention is not limited thereto.For those skilled in the art, without departing from the spirit and substance in the present invention, can make various modification and improvement, these modification and improvement are also considered as protection scope of the present invention.

Claims (9)

1. a backlight, it is characterized in that, this backlight comprises multiple sub-backlight, each described sub-backlight comprises the first limitting casing and the second limitting casing, the first confined planes that described first limitting casing has two end faces and is connected between two described end faces, described first confined planes is towards the middle part of described sub-backlight, described second limitting casing has the second confined planes, described second limitting casing is formed on an end face of described first limitting casing, and described second confined planes is towards the light-emitting window of described sub-backlight, first limitting casing of adjacent two described sub-backlights forms as one, the basal surface of adjacent two described second limitting casings is provided with the illuminating part installing plate deviating from described second confined planes and extend, this illuminating part installing plate is for installing the illuminating part of adjacent two described sub-backlights, wherein,
Two end faces of described first limitting casing refer to the surface of the light-emitting window towards described sub-backlight of described first limitting casing and the surface deviating from the light-emitting window of described sub-backlight of described first limitting casing; Described first confined planes refers to and the face that the side of the display floater corresponding to described sub-backlight contacts, and described second confined planes refers to and the face that the bottom surface of the display floater corresponding to described sub-backlight contacts; Described first confined planes is moved along the length of this display floater or width for preventing display floater, and described second confined planes is moved along the thickness direction of this display floater for preventing display floater.
2. backlight according to claim 1, is characterized in that, the illuminating part of described sub-backlight is integration LED lamp bar.
3. backlight according to claim 2, it is characterized in that, described illuminating part installing plate is provided with thickness direction along this illuminating part installing plate through the installing hole of described illuminating part installing plate, the illuminating part of adjacent two described sub-backlights is integrated on same circuit board, and is fastened in described installing hole.
4. backlight according to claim 3, is characterized in that, described illuminating part is the integration LED lamp bar of double-side.
5. backlight according to claim 1, is characterized in that, described sub-backlight also comprises the light guide plate corresponding to described illuminating part.
6. backlight as claimed in any of claims 1 to 5, it is characterized in that, described sub-backlight also comprises blooming piece and the 3rd limitting casing, described second limitting casing has the joint face in the middle part of described sub-backlight, this joint face and described second confined planes adjoin, described 3rd limitting casing is fixed on described joint face, and described blooming piece can be limited to predeterminated position by described 3rd limitting casing.
7. backlight according to claim 6, it is characterized in that, described 3rd limitting casing comprises locating part and connector, described joint face is provided with groove, described connector is fastened in described groove, and protrude towards the middle part of described sub-backlight, the second limiting section that described locating part comprises the first limiting section and is connected with this first limiting section, described first limiting section is arranged on described joint face, described second limiting section is arranged on described connector, and described blooming piece arranges the predeterminated position that described first limiting section and described second limiting section limit.
8. backlight according to claim 7, it is characterized in that, described locating part also comprises the 3rd limiting section, and described second limiting section is arranged between described first limiting section and described 3rd limiting section, and described connector is arranged between described 3rd limiting section and described groove.
9. a splicing display device, comprises backlight and multiple display floater, it is characterized in that, described backlight is the backlight in claim 1 to 8 described in any one, the corresponding described display floater of every sub-backlight of this backlight.
CN201410217594.1A 2014-05-21 2014-05-21 Backlight and splicing display device Active CN104033788B (en)

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Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104570464B (en) * 2015-01-29 2018-09-04 深圳市华星光电技术有限公司 Large scale display device
CN108681420B (en) * 2018-05-15 2021-07-27 惠州市华星光电技术有限公司 Display screen and splicing display device
CN113534538B (en) * 2021-07-30 2023-03-17 合肥惠科金扬科技有限公司 Backlight module and display device

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* Cited by examiner, † Cited by third party
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CN201374154Y (en) * 2009-03-20 2009-12-30 夏展敏 Device eliminating display screen joint frame
US20130128420A1 (en) * 2011-11-18 2013-05-23 Shenzhen China Star Optoelectronics Technology Co. Back Frame Of Flat Panel Display Device, Method For Manufacturing Back Frame, And Backlight System
CN103065551B (en) * 2013-01-16 2015-07-15 深圳市华星光电技术有限公司 Spliced display screen
CN103514820B (en) * 2013-09-22 2016-03-02 广东威创视讯科技股份有限公司 A kind of LCD splicing system eliminating display bezel
CN103529633B (en) * 2013-11-04 2015-09-02 广东威创视讯科技股份有限公司 A kind of connecting-piece structure for connecting Mosaic screen

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