CN204028521U - Backlight and display device - Google Patents

Backlight and display device Download PDF

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Publication number
CN204028521U
CN204028521U CN201420387336.3U CN201420387336U CN204028521U CN 204028521 U CN204028521 U CN 204028521U CN 201420387336 U CN201420387336 U CN 201420387336U CN 204028521 U CN204028521 U CN 204028521U
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CN
China
Prior art keywords
backlight
illuminating
optical diaphragm
adhesive tape
guide plate
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Active
Application number
CN201420387336.3U
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Chinese (zh)
Inventor
夏小丽
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BOE Technology Group Co Ltd
BOE Optical Science and Technology Co Ltd
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BOE Technology Group Co Ltd
BOE Optical Science and Technology Co Ltd
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Priority to CN201420387336.3U priority Critical patent/CN204028521U/en
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Abstract

The utility model provides a kind of backlight and display device, can reduce the border width of display device.Described backlight comprises optical diaphragm group and lamp bar, described optical diaphragm group comprises light guide plate, the circuit board that described lamp bar comprises illuminating part and is electrically connected with described illuminating part, wherein, in described light guide plate, be provided with the groove corresponding with described illuminating part, described illuminating part is arranged in described groove.

Description

Backlight and display device
Technical field
The utility model relates to technical field of liquid crystal display, particularly, relates to a kind of backlight and the display device that comprises this backlight.
Background technology
The advantage such as liquid crystal indicator, power saving thin with its fuselage in recent years,, radiation are little and being widely applied.Existing liquid crystal indicator comprises backlight and display panel.Because display panel itself is not luminous, need to irradiate to produce image to display panel by the light of backlight transmitting.
Backlight generally includes provides the illuminating part of light source and blooming piece, for fixed optics diaphragm arranges glue frame between the backboard of backlight and blooming piece, still, because glue frame has certain thickness, therefore can affect display device and realize the design of narrow frame.
Utility model content
The display device that the purpose of this utility model is to provide a kind of backlight and comprises this backlight, to reduce the frame of display device.
To achieve these goals, the utility model provides a kind of backlight, comprise optical diaphragm group and lamp bar, described optical diaphragm group comprises light guide plate, the circuit board that described lamp bar comprises illuminating part and is electrically connected with described illuminating part, in described light guide plate, be provided with the groove corresponding with described illuminating part, described illuminating part is arranged in described groove.
Preferably, described illuminating part is side view type light emitting diode, and the depth direction of described groove is consistent with the thickness direction of described light guide plate.
Preferably, on described circuit board, be provided with between the surface of illuminating part and described light guide plate and be provided with jointing material, so that described lamp bar is bonded in described light guide plate.
Preferably, described optical diaphragm group has exiting surface, the bottom surface relative with this exiting surface and is connected to the side between described exiting surface and bottom surface, described backlight also comprises adhesive tape, described tape-stripping is in side, the subregion of exiting surface and the subregion of described bottom surface of described optical diaphragm group, to fix the relative position between the multiple blooming pieces in described optical diaphragm group.
Preferably, described adhesive tape is shading rubber belt.
Preferably, between the side of described optical diaphragm group and described adhesive tape, be provided with wall.
Preferably, described wall is to adjust rete for reflection or light-absorbing optics.
Preferably, on described adhesive tape, be provided with multiple otch, and/or in described optical diaphragm group, the edge of blooming piece is provided with multiple otch.
Preferably, described otch is arranged on the part of the bottom surface that sticks on optical diaphragm group of described adhesive tape, and/or described otch is arranged on the part of the exiting surface that sticks on optical diaphragm group of described adhesive tape.
Correspondingly, the utility model also provides a kind of display device, and described display device comprises above-mentioned backlight provided by the utility model.
Can find out, on the one hand, illuminating part is arranged in the groove in light guide plate, thereby reduces the shared space of fixing illuminating part, thereby can reduce the border width of display device.On the other hand, tape-stripping is in side, the subregion of exiting surface and the subregion of described bottom surface of described optical diaphragm group, multiple blooming pieces in described optical diaphragm group can be fixed, therefore, in this backlight, the glue frame of fixed optics diaphragm group can be no longer set, thereby reduce the frame of display device, in the situation that display device physical dimension is fixing, increase the area of viewing area.Meanwhile, optical diaphragm group does not have the restriction of glue frame around, and between each blooming piece, position is relatively fixing, thereby can realize the design of flexible backlight.In addition, compared to the prior art, because utilizing adhesive tape, the utility model can between each blooming piece, keep stable, thereby without the lug that further fixed optics diaphragm is set on blooming piece, thereby the complicacy of reduction production technology.Again on the one hand, in the utility model, on blooming piece and/or adhesive tape, be provided with otch, can reduce the arch upward generation of phenomenon of blooming piece.
Brief description of the drawings
Accompanying drawing is to be used to provide further understanding of the present utility model, and forms a part for instructions, is used from explanation the utility model, but does not form restriction of the present utility model with embodiment one below.In the accompanying drawings:
Shown in Fig. 1 is the part-structure schematic diagram of backlight provided by the utility model;
Shown in Fig. 2 is the structure vertical view of optical model sheet group in the utility model;
Shown in Fig. 3 is the first set-up mode schematic diagram of the otch on adhesive tape in the utility model;
Shown in Fig. 4 is the second set-up mode schematic diagram of the otch on adhesive tape in the utility model;
Shown in Fig. 5 is the third method to set up schematic diagram of the otch on adhesive tape in the utility model.
Wherein, Reference numeral is: 10, optical diaphragm group; 11, upper prismatic lens; 12, lower prismatic lens; 13, diffusion sheet; 14, light guide plate; 15, reflector plate; 20, adhesive tape; 21, otch; 30, wall; 41, illuminating part; 42, circuit board; 43, jointing material; 50, groove.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated.Should be understood that, embodiment described herein only, for description and interpretation the utility model, is not limited to the utility model.
As one side of the present utility model, a kind of backlight is provided, as shown in Figure 1, this backlight comprises optical diaphragm group 10 and lamp bar, optical diaphragm group 10 can comprise light guide plate 14, the circuit board 42 that described lamp bar comprises illuminating part 41 and is electrically connected with illuminating part 41, is provided with the groove corresponding with illuminating part 41 50 in light guide plate 14, illuminating part 41 is arranged in groove 50.Illuminating part 41 can be light emitting diode (LED), and the light emission direction of light emitting diode is vertical with the incidence surface of light guide plate 14, and light, through the scattering of the multiple light guiding points in light guide plate 14, penetrates forming surface light source from the exiting surface of light guide plate 14.
In the utility model, illuminating part 41 is arranged in the groove 50 in light guide plate, thereby reduce the shared space of fixing illuminating part 41, thereby can reduce the border width of display device, in the situation that display device physical dimension is fixing, increased the area of viewing area.
The shape of groove 50 can be consistent with the shape of corresponding illuminating part 41, so that illuminating part 41 is fastened in described groove.Preferably, as shown in Figure 1, between the surface that is provided with illuminating part 41 of circuit board 42 and light guide plate 14, be provided with jointing material 43, so that described lamp bar is bonded in light guide plate 14, thereby in the case of the opening of groove is larger, also can make described lamp bar be fixed in light guide plate 14, improve the stability of light.
Groove 50 can be arranged on the side of light guide plate 14, that is, the depth direction of groove 50 is vertical with the thickness direction of light guide plate 14; The upper surface that also can be arranged on light guide plate 14, the depth direction of groove 50 is consistent with the thickness direction of light guide plate 14.Preferably, illuminating part 41 is side view type light emitting diode, and the depth direction of groove 50 is consistent with the thickness direction of light guide plate 14, and light is towards light guide plate 14 internal emission.On circuit board 42, be provided with multiple illuminating parts 41, as shown in Figure 2, in light guide plate 14, can be provided with multiple and illuminating part 41 groove 50 one to one, each illuminating part 41 is arranged in corresponding groove 50, certain multiple groove also can be communicated with growth list structure, groove shapes is not limited herein, can determine according to the shape of illuminating part; Groove 50 can be groove.
It should be noted that, in Fig. 1, illuminating part is arranged on the exiting surface of light guide plate, certainly, illuminating part also can be arranged on the one side relative with exiting surface of light guide plate, it is complicated that but a kind of design is gone up in this design, or make finished size thickening, because the thickness of circuit board is conventionally large than the thickness of reflector plate.
Further, optical diaphragm group 10 has exiting surface, the bottom surface relative with this exiting surface and is connected to the side between described exiting surface and bottom surface, described backlight also comprises adhesive tape 20, adhesive tape 20 sticks on side, the subregion of exiting surface and the subregion of described bottom surface of optical diaphragm group 10, with the relative position between the multiple blooming pieces in fixed optics diaphragm group 10.
Adhesive tape 20 sticks on side, the subregion of exiting surface and the subregion of described bottom surface of optical diaphragm group 10, multiple blooming pieces in optical diaphragm group 10 can be fixed, therefore, in this backlight, the glue frame of fixed optics diaphragm group 10 can be no longer set, thereby further reduce the border width of display device.Meanwhile, optical diaphragm group 10 does not have the restriction of glue frame around, and between each blooming piece, position is relatively fixing, thereby can realize the design of flexible backlight.In addition, compared to the prior art, because utilizing adhesive tape, the utility model can between each blooming piece, keep stable, thereby without the lug that further fixed optics diaphragm is set on blooming piece, thereby the complicacy of reduction production technology.
As shown in Figure 1, multiple blooming pieces of optical diaphragm group 10 can comprise prismatic lens 11, lower prismatic lens 12, diffusion sheet 13, light guide plate 14 and reflector plate 15.In the time utilizing multiple blooming piece of adhesive tape 20 fixed optics diaphragm groups 10, in order to reduce adhesive tape 20 blocking light, adhesive tape 20 sticks on the area of the part of optical diaphragm group 10 exiting surfaces (going up the upper surface of prismatic lens 11) should be as far as possible little, as long as multiple blooming pieces that can fixed optics diaphragm group 10.In the utility model " on ", D score refer to respectively upper and lower in Fig. 1 to.
In order to prevent that light from spilling from the side of optical diaphragm group 10, as a kind of preferred implementation of the present utility model, adhesive tape 20 is shading rubber belt.
Further, as shown in Figure 1, between the side of optical diaphragm group 10 and adhesive tape 20, be provided with wall 30, thereby the side that prevents adhesive tape 20 and optical diaphragm group 10 is due to the phenomenon of adhesion produces local bright border (, the scattering of the bonding particle on adhesive tape to light).
The utility model is not restricted the concrete form of wall 30, as long as the side of adhesive tape 20 and optical diaphragm group 10 can be separated.For example, can be between adhesive tape 20 and the side of optical diaphragm group 10 printing-ink.
In order to improve display effect, preferably, wall 30 is to adjust rete for reflection or light-absorbing optics, for example, the material of described optics adjustment rete can be any one in the polyesters retes such as Polyethylene Naphthalate alcohol (PEN) rete, polybutylene terephthalate (PBT) rete and polyethylene terephthalate alcohol (PET) rete.Can be according to the needs that show, the color that described optics is adjusted rete is set to light color, with reflection ray, improves the brightness that shows image; Also can be described the optics color of adjusting rete be set to dark color, to absorb light, avoid showing that image is excessively bright.
As described above, the depth direction of groove 50 can be consistent with the thickness direction of light guide plate 14, that is, lamp bar is arranged on the exiting surface of light guide plate 14, as shown in Figure 1.In order to prevent the impact of lamp bar on blooming piece, in the time that lamp bar is arranged on the exiting surface of light guide plate 14, in optical diaphragm group 10, have each blooming piece of a side at least and do not line up, as depicted in figs. 1 and 2, light guide plate 14 protrudes from diffusion sheet 13, diffusion sheet 13 protrudes from lower prismatic lens 12, lower prismatic lens 12 protrudes from prismatic lens 11, described lamp bar is arranged on the part that protrudes from diffusion sheet 13 of light guide plate 14, while using adhesive tape 20 fixing each blooming piece, diffusion sheet 13 protrudes from the part of lower prismatic lens 12, part and circuit board 42 that lower prismatic lens 12 protrudes from prismatic lens 11 all can contact with adhesive tape.
Conventionally in the production run of display device, need to carry out reliability test to backlight, and the material of adhesive tape 20 and blooming piece is different, for prevent the test of described reliability (as, environment temperature increases) time, blooming piece expands and arches upward, and can on the edge of blooming piece and/or adhesive tape 20, otch be set, thereby make blooming piece have certain expansion space.In order to prevent that otch 21 from affecting light effect, preferably, as shown in Figures 3 to 5, multiple otch 21 can be set on adhesive tape 20, and not arrange on blooming piece.
The utility model is not restricted the position of otch 21, as long as can relax the stress that blooming piece is subject in the time expanding.Particularly, otch 21 is arranged on the part of the bottom surface that sticks on optical diaphragm group 10 of adhesive tape 20, and/or otch 21 is arranged on the part of the exiting surface that sticks on optical diaphragm group 10 of adhesive tape 20, thereby reduce the stress producing in upper prismatic lens 11 that adhesive tape 20 pastes and/or reflector plate 15.In the time being provided with wall 30 between the side of optical diaphragm group 10 and adhesive tape 20, middle rete (, lower prismatic lens 12, diffusion sheet 13 and light guide plate 14) has certain expansion space, reduces the arch upward generation of phenomenon of blooming piece.
As shown in Figure 3, otch 21 can be arranged on the edge of adhesive tape 20, forms semi-enclosed otch; As shown in Figure 4 and Figure 5, otch 21 can also be arranged on adhesive tape 20 inside, forms closed otch, and certainly, otch 21 can also be other figures.
Be more than the description to backlight provided by the utility model, can find out, on the one hand, illuminating part is arranged in the groove in light guide plate, thereby has reduced the shared space of illuminating part, thereby can reduce the border width of display device.On the other hand, tape-stripping is in side, the subregion of exiting surface and the subregion of described bottom surface of described optical diaphragm group, multiple blooming pieces in described optical diaphragm group can be fixed, therefore, in this backlight, the glue frame of fixed optics diaphragm group can be no longer set, thereby reduce the frame of display device, in the situation that display device physical dimension is fixing, increase the area of viewing area.In actual production, be decreased to 0.2mm by the width of cancelling dark space around, luminous zone that glue frame can make backlight.Meanwhile, optical diaphragm group does not have the restriction of glue frame around, and between each blooming piece, position is relatively fixing, thereby can realize the design of flexible backlight.In addition, compared to the prior art, because utilizing adhesive tape, the utility model can between each blooming piece, keep stable, thereby without the lug that further fixed optics diaphragm is set on blooming piece, thereby the complicacy of reduction production technology.Again on the one hand, in the utility model, on blooming piece and/or adhesive tape, be provided with otch, can reduce the arch upward generation of phenomenon of blooming piece.
As on the other hand of the present utility model, a kind of display device is also provided, this display device comprises above-mentioned backlight provided by the utility model.Due to glue-free frame in above-mentioned backlight, therefore can reduce the border width of described display device.
Described display device can be: any product or parts with Presentation Function such as mobile phone, panel computer, televisor, display, notebook computer, digital album (digital photo frame), navigating instrument.
Be understandable that, above embodiment is only used to principle of the present utility model is described and the illustrative embodiments that adopts, but the utility model is not limited to this.For those skilled in the art, in the situation that not departing from spirit of the present utility model and essence, can make various modification and improvement, these modification and improvement are also considered as protection domain of the present utility model.

Claims (10)

1. a backlight, comprise optical diaphragm group and lamp bar, described optical diaphragm group comprises light guide plate, the circuit board that described lamp bar comprises illuminating part and is electrically connected with described illuminating part, it is characterized in that, in described light guide plate, be provided with the groove corresponding with described illuminating part, described illuminating part is arranged in described groove.
2. backlight according to claim 1, is characterized in that, described illuminating part is side view type light emitting diode, and the depth direction of described groove is consistent with the thickness direction of described light guide plate.
3. backlight according to claim 1, is characterized in that, is provided with between the surface of illuminating part and described light guide plate and is provided with jointing material, so that described lamp bar is bonded in described light guide plate on described circuit board.
4. backlight according to claim 1, it is characterized in that, described optical diaphragm group has exiting surface, the bottom surface relative with this exiting surface and is connected to the side between described exiting surface and bottom surface, described backlight also comprises adhesive tape, described tape-stripping is in side, the subregion of exiting surface and the subregion of described bottom surface of described optical diaphragm group, to fix the relative position between the multiple blooming pieces in described optical diaphragm group.
5. backlight according to claim 4, is characterized in that, described adhesive tape is shading rubber belt.
6. backlight according to claim 4, is characterized in that, between the side of described optical diaphragm group and described adhesive tape, is provided with wall.
7. backlight according to claim 6, is characterized in that, described wall is to adjust rete for reflection or light-absorbing optics.
8. according to the backlight described in any one in claim 4 to 7, it is characterized in that, on described adhesive tape, be provided with multiple otch, and/or in described optical diaphragm group, the edge of blooming piece is provided with multiple otch.
9. backlight according to claim 8, is characterized in that, described otch is arranged on the part of the bottom surface that sticks on optical diaphragm group of described adhesive tape, and/or described otch is arranged on the part of the exiting surface that sticks on optical diaphragm group of described adhesive tape.
10. a display device, is characterized in that, described display device comprises the backlight described in any one in claim 1 to 9.
CN201420387336.3U 2014-07-14 2014-07-14 Backlight and display device Active CN204028521U (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104654133A (en) * 2015-02-10 2015-05-27 深圳市德仓科技有限公司 Backlight module, display device and terminal
CN105116606A (en) * 2015-06-26 2015-12-02 武汉华星光电技术有限公司 Reflection sheet, backlight module and display device
CN105180097A (en) * 2015-08-12 2015-12-23 深圳市华星光电技术有限公司 Display device, lamp box and reflection piece of lamp box
CN105278163A (en) * 2015-11-16 2016-01-27 深圳市华星光电技术有限公司 Direct illumination type backlight module and display device with same
CN105650542A (en) * 2016-01-04 2016-06-08 京东方光科技有限公司 Backlight module and display device
CN105785624A (en) * 2016-05-06 2016-07-20 武汉华星光电技术有限公司 Liquid crystal display device without rubber frame and assembling method thereof
CN109164637A (en) * 2018-10-10 2019-01-08 青岛海信电器股份有限公司 Backlight module and display device
TWI696015B (en) * 2018-12-05 2020-06-11 友達光電股份有限公司 Display device

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104654133A (en) * 2015-02-10 2015-05-27 深圳市德仓科技有限公司 Backlight module, display device and terminal
CN105116606A (en) * 2015-06-26 2015-12-02 武汉华星光电技术有限公司 Reflection sheet, backlight module and display device
CN105180097A (en) * 2015-08-12 2015-12-23 深圳市华星光电技术有限公司 Display device, lamp box and reflection piece of lamp box
CN105180097B (en) * 2015-08-12 2017-03-08 深圳市华星光电技术有限公司 Display device, lamp box and its reflector plate
CN105278163A (en) * 2015-11-16 2016-01-27 深圳市华星光电技术有限公司 Direct illumination type backlight module and display device with same
CN105278163B (en) * 2015-11-16 2019-01-22 深圳市华星光电技术有限公司 A kind of down straight aphototropism mode set and display device
US9880349B2 (en) 2016-01-04 2018-01-30 Boe Technology Group Co., Ltd. Backlight module and display device for simple fixation of lamp bar
CN105650542A (en) * 2016-01-04 2016-06-08 京东方光科技有限公司 Backlight module and display device
CN105785624A (en) * 2016-05-06 2016-07-20 武汉华星光电技术有限公司 Liquid crystal display device without rubber frame and assembling method thereof
WO2017190380A1 (en) * 2016-05-06 2017-11-09 武汉华星光电技术有限公司 Liquid crystal display apparatus having adhesive-free frame and packaging method thereof
CN109164637A (en) * 2018-10-10 2019-01-08 青岛海信电器股份有限公司 Backlight module and display device
TWI696015B (en) * 2018-12-05 2020-06-11 友達光電股份有限公司 Display device

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