CN201866642U - Backlight source and liquid crystal display - Google Patents
Backlight source and liquid crystal display Download PDFInfo
- Publication number
- CN201866642U CN201866642U CN2010205861447U CN201020586144U CN201866642U CN 201866642 U CN201866642 U CN 201866642U CN 2010205861447 U CN2010205861447 U CN 2010205861447U CN 201020586144 U CN201020586144 U CN 201020586144U CN 201866642 U CN201866642 U CN 201866642U
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- reflectance coating
- lgp
- backboard
- light
- backlight
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Abstract
The utility model discloses a backlight source and a liquid crystal display, which relate to the field of liquid crystal display and are designed for improving light utilization efficiency and simultaneously effectively reducing production cost. The backlight source comprises a back plate, a light guide plate and a light source are arranged on the back plate, the light source is mounted in a printed circuit board and arranged opposite to a light incident surface of the light guide plate, and the area, which is opposite to the light incident surface of the light guide plate, of the light source is covered by a reflecting film lampshade. The liquid crystal display consists of a liquid crystal panel, and the backlight source is arranged on the back of the liquid crystal panel. The backlight source and the liquid crystal display can be used in liquid crystal display devices.
Description
Technical field
The utility model relates to field of liquid crystal, relates in particular to a kind of backlight and LCD.
Background technology
LCD belongs to passive light-emitting device, mainly is made up of liquid crystal panel and backlight two parts.Wherein, the liquid crystal layer in the liquid crystal panel itself does not have lighting function, needs backlight to show to realize image for liquid crystal panel provides light source.
Fig. 1 is a kind of cross-sectional view of existing backlight.As shown in Figure 1, existing backlight comprises the backboard 1 of bending, to be used to support other structures of backlight; In backboard 1 region surrounded, be provided with LGP 2, be provided with reflectance coating 6 between LGP 2 and the backboard 1, to be used to improve the utilization ratio of light; Light entrance face with respect to LGP 2 is provided with light source 3, be generally LED (Light Emitting Diode, light emitting diode), light source 3 is installed in printed circuit board (PCB) (PCB, Printed Circuit Board) in 4, PCB4 is adhesively fixed on lampshade 7, wherein by heat-conducting glue 5, lampshade 7 is a metal material, and has solid shape; The zone that light source 3 is relative with the light entrance face of LGP 2 is covered by lampshade 7, the light that light source 3 sends can be directly or repeatedly reflect by lampshade 7 and reflectance coating 6 etc. after enter into LGP 2, improved the utilization ratio of light.
In the process of making above-mentioned backlight, the inventor finds that there are the following problems at least in the prior art: though can pass through the utilization ratio that lampshade 7 improves light, for forming lampshade 7, need special and lampshade 7 corresponding particular manufacturing crafts, production cost is higher.
The utility model content
Main purpose of the present utility model is, a kind of backlight and LCD are provided, and can improve the utilization ratio of light, effectively reduces production costs simultaneously.
For achieving the above object, embodiment of the present utility model adopts following technical scheme:
A kind of backlight, comprise backboard, described backboard is provided with LGP and light source, the surface that described backboard and described LGP join is pasted with the reflectance coating body, described light source is installed among the PCB, and described light source is with respect to the light entrance face setting of described LGP, and the relative zone of light entrance face of described light source and the described LGP film lampshade portion that is reflected covers.
A kind of LCD comprises:
Liquid crystal panel, the back of described liquid crystal panel is provided with backlight;
Described backlight comprises backboard, described backboard is provided with LGP and light source, the surface that described backboard and described LGP join is pasted with the reflectance coating body, described light source is installed among the PCB, and described light source is with respect to the light entrance face setting of described LGP, and the relative zone of light entrance face of described light source and the described LGP film lampshade portion that is reflected covers.
After adopting technique scheme, backlight that the utility model embodiment provides and LCD, owing to adopt reflectance coating lampshade portion, on the one hand, reflectance coating lampshade portion can play constraint and reflex to the light that light source sends, and can form the closed area between light source and LGP, and the light that light source sends can directly or after repeatedly reflecting enter into LGP, reduce the loss of light, improved the utilization ratio of light and the image quality of liquid crystal panel; On the other hand, do not need the metal shade mould of special special use, effectively reduce production cost.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is a kind of cross-sectional view of the backlight of prior art;
Fig. 2 is the cross-sectional view of an embodiment of the utility model backlight;
Fig. 3 is the cross-sectional view after backlight shown in Figure 2 is improved;
Fig. 4 is the another kind of cross-sectional view after backlight shown in Figure 2 improves;
Fig. 5 is the another kind of cross-sectional view of backlight shown in Figure 2;
Fig. 6 is the cross-sectional view of another embodiment of the utility model backlight;
Fig. 7 is the schematic diagram after reflectance coating lampshade portion, reflectance coating transition part and the reflectance coating body of backlight shown in Figure 6 flattens;
Fig. 8 is after backlight shown in Figure 6 is improved, the schematic diagram after reflectance coating lampshade portion, reflectance coating transition part and reflectance coating body flatten;
Fig. 9 is the cross-sectional view after backlight shown in Figure 6 is improved.
Reference numeral:
The 1-backboard, 2-LGP, 21-light entrance face, the 22-light-emitting face, 3-light source, 4-PCB, the 5-heat-conducting glue, 61-reflectance coating body, 62-reflectance coating lampshade portion, 621 '-bending part, 621-bending part, 63-reflectance coating transition part, the 631-vacancy section, 7-lampshade, 8-double faced adhesive tape, the 9-closed area, a-bending line, b-bending line.
The specific embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model aims to provide a kind of backlight and LCD, can improve the utilization ratio of light, can effectively reduce production costs simultaneously.
As shown in Figure 2, a specific embodiment for the utility model backlight comprises:
The backboard 1 of bending, backboard 1 is provided with LGP 2 and light source 3, and here, light source 3 is LED, and light source 3 is provided with respect to the light entrance face 21 of LGP 2; Be provided with reflectance coating body 61 between backboard 1 and the LGP 2; Light source 3 is installed among the PCB4, and PCB4 is adhesively fixed on the backboard 1 by heat-conducting glue 5; Reflectance coating lampshade portion 62 1 sides are overlapped in the fringe region of the light-emitting face 22 of LGP 2, and opposite side is overlapped on the PCB4, and like this, the light entrance face 21 relative zones of light source 2 and the LGP 3 film lampshade portion 62 that is reflected covers.Can there be certain extension in reflectance coating lampshade portion 62 along the direction of vertical paper, can form closed area 9 between LGP 2 and light source 3.
It is pointed out that reflectance coating lampshade portion 62 is similar with the effect of lampshade used in the prior art, reflectance coating lampshade portion 62 can cover the zone that lampshade covered in the prior art.
When the backlight of present embodiment uses, on the one hand, reflectance coating lampshade portion 62 can play constraint and reflex to the light that light source 3 sends, reduce the divergence loss of light, the light that light source 3 sends can be directly or 9 is repeatedly reflected the back through reflectance coating bodies 61 and reflectance coating lampshade portion 62 etc. and enter into LGP 2 by light entrance face 21 in the closed area, has improved the utilization ratio of light; On the other hand,, do not need the metal shade mould of special special use, effectively reduce production cost because present embodiment adopts reflectance coating lampshade portion 62.
In the present embodiment, reflectance coating lampshade portion 62 is overlapped in and attaches fixingly between the part of LGP 2 and the LGP 2 by double faced adhesive tape 8, and the part that reflectance coating lampshade portion 62 is overlapped in PCB4 is adhered fixed with PCB4 by double faced adhesive tape 8 equally, certainly, also can be other fixed form, not do qualification here.
Further, as shown in Figure 3, as a kind of improvement to this enforcement, in order to form reliable and stable being connected with PCB4, reflectance coating lampshade portion 62 is provided with bending part 621 with the end that PCB4 overlaps mutually, and bending part 621 can be attached to PCB4 by double faced adhesive tape near the surface of PCB4, to achieve a fixed connection.Here, bending part 621 is installed with between backboard 1 and PCB4.Certainly, as shown in Figure 4, bending part 621 also can be attached on PCB4 and LGP 2 facing surfaces, and bending part 621 can be downward bending-like shown in Figure 3, can also be the bending-like that makes progress.
Be understandable that in the present embodiment, reflectance coating lampshade portion 62 also can be fixed on the backboard 1 except that being overlapped in PCB4, can form the light entrance face 21 that surrounds LGP 2 and the closed area of light source 3.Concrete, above-mentioned being installed with is bonded on the backboard 1 on the surface of the 621 close backboards 1 of the bending part between backboard 1 and the PCB4 by double faced adhesive tape; Perhaps, as shown in Figure 5, reflectance coating lampshade portion 62 near a side of backboards 1 be provided with the bending part 621 of upwards bending ', bending part 621 ' can be attached on the backboard 1 by double faced adhesive tape near the surface of backboard 1, to achieve a fixed connection.
As shown in Figure 6, another specific embodiment of the utility model backlight.Comprise:
The light source 3 that the backboard 1 of bending, backboard 1 are provided with LGP 2 and are provided with respect to the light entrance face 21 of LGP 2, here, light source 3 is LED; Backboard 1 is pasted with reflectance coating body 61 with the surface that LGP 2 joins, and backboard 1 is pasted with reflectance coating transition part 63 with light entrance face 21 facing surfaces of LGP 2, and transmitting film body 61 is connected with transmitting film transition part 630; Light source 3 is packaged among the PCB4, and PCB4 is adhesively fixed on the reflectance coating transition part 63 by heat-conducting glue 5; One end of reflectance coating lampshade portion 62 is connected with reflectance coating body 61 by reflectance coating transition part 63, the other end is overlapped in the fringe region of the light-emitting face 22 of LGP 2, and reflectance coating lampshade portion 62 is overlapped in and attaches fixingly between the part of LGP 2 and the LGP 2 by double faced adhesive tape 8, can certainly adopt other fixed form; Like this, the light entrance face 21 relative zones of light source 2 and the LGP 3 film lampshade portion 62 that is reflected covers, and reflectance coating lampshade portion 62 can form closed area 9 between LGP 2 and light source 3.
In the present embodiment, reflectance coating body 61, reflectance coating transition part 63 and reflectance coating lampshade portion 62 can be formed through twice bending by a reflectance coating, and promptly reflectance coating body 61, reflectance coating transition part 63 and reflectance coating lampshade portion 62 are one.As shown in Figure 7, a reflectance coating forms reflectance coating body 61 along the bending for the first time of bending line a process, along the bending for the second time of bending line b process, formation reflectance coating transition part 63 and reflectance coating lampshade portion 62.
Like this, when carrying out the assembling of present embodiment, can at first carry out the bending first time, reflectance coating body 61 and reflectance coating transition part 63 are attached on the surface of backboard 1 correspondence a reflectance coating; Assemble LGP 2 afterwards, and utilize heat-conducting glue 5 that PCB4 and the light source 3 that is encapsulated on the PCB4 are attached on the reflectance coating transition part 63; Then, carry out the bending second time of reflectance coating, utilize double faced adhesive tape 8 that reflectance coating lampshade portion 62 is attached on the leaded light version 2, promptly finish assembling, whole assembling process is convenient quick.
When the backlight of present embodiment uses, on the one hand, reflectance coating lampshade portion 62 can play constraint and reflex to the light that light source 3 sends, reduce the divergence loss of light, the light that light source 3 sends can be directly or 9 is repeatedly reflected the back through reflectance coating bodies 61 and reflectance coating lampshade portion 62 etc. and enter into LGP 2 by light entrance face 21 in the closed area, has improved the utilization ratio of light; On the other hand,, do not need the metal shade mould of special special use, effectively reduce production cost because present embodiment adopts reflectance coating lampshade portion 62; Again on the one hand, because reflectance coating body 61, reflectance coating transition part 63 and the reflectance coating lampshade portion 62 of present embodiment can be formed through twice bending by a reflectance coating, therefore, with respect to previous embodiment, present embodiment is easier to assembling, can effectively enhance productivity.
Further, as Fig. 8 and shown in Figure 9, as a kind of improvement to present embodiment, in order to improve the heat conductivility of backlight, prolong the service life of backlight, reflectance coating transition part 63 is provided with vacancy section 631, and the size and dimension of vacancy section 631 and the size and dimension of PCB4 adapt.PCB4 with and light source 3 that go up to install can pass vacancy section 631, directly be attached on the backboard 1 by heat-conducting glue 5, light source 3 directly dispels the heat by backboard 1, effectively improves the heat dispersion of backlight.
Accordingly, the utility model also provides a kind of liquid crystal display device, comprising:
Liquid crystal panel, the back of described liquid crystal panel is provided with backlight;
Described backlight comprises backboard, described backboard is provided with LGP and light source, the surface that described backboard and described LGP join is pasted with the reflectance coating body, described light source is installed among the PCB, and described light source is with respect to the light entrance face setting of described LGP, and the relative zone of light entrance face of described light source and the described LGP film lampshade portion that is reflected covers.
Wherein, the backlight that described backlight can adopt the utility model embodiment to provide, preamble has been described in detail, and is not giving unnecessary details here.
The LCD that the embodiment of the invention provides, on the one hand, reflectance coating lampshade portion can play constraint and reflex to the light that light source sends, and can between light source and LGP, form the closed area, the light that light source sends can directly or after repeatedly reflecting enter into LGP, reduce the loss of light, improved the utilization ratio of light and the image quality of liquid crystal panel; On the other hand, do not need the metal shade mould of special special use, effectively reduce production cost.
The above; it only is the specific embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, all should be encompassed within the 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 (8)
1. a backlight comprises backboard, and described backboard is provided with LGP and light source, the surface that described backboard and described LGP join is pasted with the reflectance coating body, and described light source is installed in the printed circuit board (PCB), and described light source is with respect to the light entrance face setting of described LGP, it is characterized in that
The zone that the light entrance face of described light source and described LGP the is relative film lampshade portion that is reflected covers.
2. backlight according to claim 1 is characterized in that, an end of described reflectance coating lampshade portion is overlapped in the fringe region of the light-emitting face of described LGP, and the other end is fixed on the described printed circuit board (PCB) or on described backboard.
3. backlight according to claim 2 is characterized in that,
Described reflectance coating lampshade portion is fixed on the end on described printed circuit board (PCB) or the backboard, is provided with bending part, and described reflectance coating lampshade portion is attached on described printed circuit board (PCB) or the backboard by described bending part.
4. backlight according to claim 3 is characterized in that described bending part is installed with between described backboard and printed circuit board (PCB).
5. backlight according to claim 1 is characterized in that,
The light entrance face facing surfaces of described backboard and described LGP is pasted with the reflectance coating transition part, and described transmitting film body is connected with described transmitting film transition part;
One end of described reflectance coating lampshade portion is connected with described reflectance coating body by described reflectance coating transition part, and the other end is overlapped in the fringe region of the light-emitting face of described LGP.
6. backlight according to claim 5, it is characterized in that, described reflectance coating transition part is provided with vacancy section, and the size and dimension of described vacancy section and the size and dimension of described printed circuit board (PCB) adapt, and described printed circuit board (PCB) passes described vacancy section and is attached on the described backboard.
7. according to each described backlight of claim 2 to 6, it is characterized in that, described reflectance coating lampshade portion be overlapped in attach by double faced adhesive tape between the part of described LGP and the described LGP fixing.
8. a LCD is characterized in that, comprises liquid crystal panel, and the back of described liquid crystal panel is provided with claim 1 to each described backlight of claim 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205861447U CN201866642U (en) | 2010-10-26 | 2010-10-26 | Backlight source and liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205861447U CN201866642U (en) | 2010-10-26 | 2010-10-26 | Backlight source and liquid crystal display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201866642U true CN201866642U (en) | 2011-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205861447U Expired - Lifetime CN201866642U (en) | 2010-10-26 | 2010-10-26 | Backlight source and liquid crystal display |
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| Country | Link |
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| CN (1) | CN201866642U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620218A (en) * | 2012-04-18 | 2012-08-01 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN103727434A (en) * | 2013-12-20 | 2014-04-16 | 苏州东山精密制造股份有限公司 | Sidelight type backlight module |
| CN104246352A (en) * | 2012-10-30 | 2014-12-24 | 堺显示器制品株式会社 | Light source unit and display device |
| CN104635378A (en) * | 2013-11-11 | 2015-05-20 | 乐金显示有限公司 | Backlight unit and display device comprising the same |
| CN104880859A (en) * | 2014-02-27 | 2015-09-02 | 乐金显示有限公司 | Liquid Crystal Display Device With Minimized Bezel |
| US9645302B2 (en) | 2013-03-21 | 2017-05-09 | Lg Display Co., Ltd. | Backlight unit and display device including the same |
| CN110456568A (en) * | 2019-08-06 | 2019-11-15 | 深圳市利航电子有限公司 | Backlight removes bright border structure |
-
2010
- 2010-10-26 CN CN2010205861447U patent/CN201866642U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102620218A (en) * | 2012-04-18 | 2012-08-01 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN104246352A (en) * | 2012-10-30 | 2014-12-24 | 堺显示器制品株式会社 | Light source unit and display device |
| CN104246352B (en) * | 2012-10-30 | 2016-02-03 | 堺显示器制品株式会社 | Light source cell and display device |
| US9645302B2 (en) | 2013-03-21 | 2017-05-09 | Lg Display Co., Ltd. | Backlight unit and display device including the same |
| CN104635378A (en) * | 2013-11-11 | 2015-05-20 | 乐金显示有限公司 | Backlight unit and display device comprising the same |
| CN103727434A (en) * | 2013-12-20 | 2014-04-16 | 苏州东山精密制造股份有限公司 | Sidelight type backlight module |
| CN104880859A (en) * | 2014-02-27 | 2015-09-02 | 乐金显示有限公司 | Liquid Crystal Display Device With Minimized Bezel |
| CN104880859B (en) * | 2014-02-27 | 2018-04-10 | 乐金显示有限公司 | With the liquid crystal display for minimizing frame |
| CN110456568A (en) * | 2019-08-06 | 2019-11-15 | 深圳市利航电子有限公司 | Backlight removes bright border structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY Effective date: 20150701 Owner name: JINGDONGFANG SCIENCE AND TECHNOLOGY GROUP CO., LTD Free format text: FORMER OWNER: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY CO., LTD. Effective date: 20150701 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150701 Address after: 100015 Jiuxianqiao Road, Beijing, No. 10, No. Patentee after: BOE Technology Group Co., Ltd. Patentee after: Beijing BOE Photoelectricity Science & Technology Co., Ltd. Address before: 100176 Beijing economic and Technological Development Zone, West Central Road, No. 8 Patentee before: Beijing BOE Photoelectricity Science & Technology Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110615 |
|
| CX01 | Expiry of patent term |