CN202327843U - Backlight source and liquid crystal display - Google Patents
Backlight source and liquid crystal display Download PDFInfo
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- CN202327843U CN202327843U CN2011204385024U CN201120438502U CN202327843U CN 202327843 U CN202327843 U CN 202327843U CN 2011204385024 U CN2011204385024 U CN 2011204385024U CN 201120438502 U CN201120438502 U CN 201120438502U CN 202327843 U CN202327843 U CN 202327843U
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Abstract
The utility model relates to the technical field of liquid crystal display production, in particular to a backlight source and a liquid crystal display. The backlight source is used for improving the phenomenon of nonuniform brightness of the liquid crystal display. The backlight source comprises LEDs (Light-Emitting Diodes) and a light guide plate. The LEDs are arranged on an LED circuit board in a staggered distributing mode to form LED light bars; and the LED light bars are arranged at one side or a plurality of sides of the light entering surface of the light guide plate. According to the utility model, the two rows of LEDs are arranged on the LED circuit board in a staggered mode; light emitted by the LEDs is projected in a dispersed mode; and a light shadow region formed by the light emitted from the row of the LEDs close to the light guide plate is supplemented to be lighted by the row of the LEDs far away from the light guide plate. Due to the adoption of the technical scheme, the phenomenon of nonuniform brightness of the display can be improved; and meanwhile, when the light of the LEDs is emitted from the two rows of the LEDs distributed on the LED circuit board, the spacings between the LEDs are greater than those between the single row of the LEDs, so that the heat dissipation performance of the LED backlight source is improved.
Description
Technical field
The utility model relates to the liquid crystal display production technical field, relates in particular to a kind of backlight and LCD.
Background technology
Comprise the backlight that can send white light in the LCD; Comprise a plurality of light emitting diodes (Light Emitting Diode that light source is provided in the backlight; LED) and LGP, as shown in Figure 1, the mode with straight line is arranged side by side on the incidence surface 12 a plurality of LED11 along a limit of the incidence surface 12 of LGP; Position for example shown in Figure 1, the light that LED11 sends reflects away through exiting surface 13; Vertical sectional drawing of backlight is as shown in Figure 2 in the prior art; Comprising: the optical film material 21 that covers the upper bottom surface of LGP 25; Cover the reflectance coating 22 of the bottom surface of LGP 25; LED11 links to each other with printed circuit board 23, and said printed circuit board 23 sticks on the backboard 24 of backlight through double faced adhesive tape.
There is following shortcoming in the above prior art scheme:
Because LED arranges with a row linear fashion, if in order to reduce the phenomenon that the LCDs brightness irregularities occurs, and the spacing of minimizing LED then can cause the LED radiating effect bad; If spacing increases, though heat dissipation problem has been had improvement to a certain degree, can cause the phenomenon of LCDs brightness irregularities, reduced in the place of LED correspondence and the clear zone can occur, thereby caused the light and dark optics of LED side bad.
The utility model content
The utility model provides a kind of backlight, has improved the LED heat dissipation problem, and has also reduced the phenomenon of brightness irregularities on the LCD.
The utility model provides a kind of backlight, and said backlight comprises LED and LGP,
Said LED is arranged on the led circuit plate with the mode that is interspersed, and forms LED lamp bar;
Said LED lamp bar is arranged at said LGP incidence surface one side or many sides.
The utility model also provides a kind of LCD, comprises arbitrary described backlight.
The utility model provides a kind of backlight, and this backlight can be arranged at LED on the circuit board of LED with the mode that two row are interspersed, and forms a LED lamp bar; Said LED lamp bar is arranged at a side of LGP incidence surface; The light that makes said LED lamp bar produced disperses to project in the LGP, arranges because the lamp on the LED lamp bar is two column distributions, has increased the spacing of LED; Therefore, can improve the LED heat dissipation problem; Simultaneously, the light of two row LED complements one another, and makes can receive the identical light of intensity on the incidence surface of whole LGP, thereby more helps the heat radiation of LED.
Description of drawings
Fig. 1 is the syndeton sketch map of LGP and LED in the prior art;
Fig. 2 is the tangent plane structural representation of backlight in the prior art;
Fig. 3 is the structure vertical view of LED lamp bar and LGP among the utility model embodiment one;
Fig. 4 is the section of structure of the utility model embodiment one;
Fig. 5 is the sketch map when LED lamp bar is luminous among the utility model embodiment one;
Fig. 6 is the structure vertical view of LED lamp bar and LGP among the utility model embodiment two;
Fig. 7 is the sketch map when LED lamp bar is luminous among the utility model embodiment two;
Fig. 8 is the structure vertical view of LED lamp bar and LGP among the utility model embodiment three;
Fig. 9 is the sketch map when LED lamp bar is luminous among the utility model embodiment three.
The specific embodiment
The utility model embodiment provides a kind of backlight, has improved the LED heat dissipation problem, and has also reduced the phenomenon of brightness irregularities on the LCD.
A kind of backlight, said backlight comprises LED and LGP,
Said LED is arranged on the led circuit plate with the mode that is interspersed, and forms LED lamp bar;
Said LED lamp bar is arranged at said LGP incidence surface one side or many sides.
Said LED is arranged on the led circuit plate with the mode that is two parallel lines formulas distributions, and each LED does not line up in the vertical direction of parallel direction each other.
Said two parallel lines are parallel with said LGP incidence surface.
A part of LED among the said LED is arranged on the led circuit plate with the mode that the curvilinear style that extends along direction initialization distributes; Another part LED with along said direction initialization linearly the mode that distributes of formula be arranged on the led circuit plate, and each LED does not line up in the vertical direction of said direction initialization each other.
The mode of said curved distribution is specially: interlaced with each other, and the angled mode of the light-emitting area of LED is arranged evenly.
The extended outside of the light-emitting area of said LED angle is between 90 °～180 °.
Said direction initialization is parallel with said LGP incidence surface.
Said LED equidistantly is distributed on the led circuit plate.
Said circuit board is printed circuit board (PCB) or flexible PCB FPC.
A kind of LCD comprises arbitrary described backlight.
Be described in detail below in conjunction with the specific embodiment and accompanying drawing.
As shown in Figure 3, be the vertical view of LED lamp bar and LGP among the utility model embodiment one, each LED3 is listed as staggered mode arranged distribution on led circuit plate 4 with two; Form LED lamp bar, LED lamp bar is positioned over incidence surface one side of LGP 7, two row LED3 are type linearly; And two row LED3 laterally arrange; Wherein the LED3 of row is between another row two adjacent LEDs 3, and preferable, wherein the LED3 of row is positioned at the centre position of another row two adjacent LEDs 3.
As shown in Figure 4, be first kind of backlight that the utility model embodiment one provides, comprise two row LED; Be arranged on the led circuit plate 4, form LED lamp bar, be pasted on the backboard 1 through double faced adhesive tape 6; LED lamp bar is positioned at a side of LGP 7 incidence surfaces; LGP 7 is provided with multi-layer optical film material 5, is provided with reflecting plate 8 below it, also is provided with lampshade 2 in the side near backboard 1 of lamp bar.
Preferable, two row LED are the parallel lines formula and are arranged on the led circuit plate 4.
As shown in Figure 5; The light that sends near the LED3 of LED LGP one row can form a figure viewed from behind because distance is bigger, can replenish away from a row LED of LGP 7 so and illuminate figure viewed from behind zone 9a; Such design; Both can strengthen the spacing of LED, optimize heat radiation, can improve the uneven phenomenon of display brightness again.
As shown in Figure 6; Structure vertical view for lamp bar and LGP among the utility model embodiment two; Each LED3 is arranged on the led circuit plate 4 with the mode that two row are interspersed; LED3 near LGP 7 incidence surfaces one side is interlaced with each other, and angled mode is arranged evenly, and the extended outside of the light-emitting area of LED3 angle a is between 90 °～180 °; Away from a row LED3 of LGP 7 incidence surfaces with the orthoscopic arranged distribution on led circuit plate 4, and be arranged in centre position near a row adjacent LED 3 of LGP 7 incidence surfaces away from the LED of LGP 7 incidence surfaces one side.As shown in Figure 7; Be the sketch map of present embodiment lamp bar when luminous; The light that sends near the LED3 of LGP 7 incidence surfaces one side has certain shadow region 9b, can illuminate shadow region 9b and be arranged in the light that sends away from LGP 7 incidence surfaces one row LED, makes the spacing of LED increase like this; Make radiating effect better, and also improved the uneven phenomenon of display brightness.
As shown in Figure 8; Structure vertical view for lamp bar and LGP among the utility model embodiment three; Wherein each LED3 is interspersed on led circuit plate 4 with two row; Near the LED3 of LGP 7 incidence surfaces one side with the orthoscopic arranged distribution on led circuit plate 4, with interlaced with each other, and angled mode is arranged evenly away from a row LED3 of LGP 7 incidence surfaces; The extended outside of the light-emitting area of LED3 angle b is between 90 °～180 °, and is arranged in the centre position away from a row adjacent LED 3 of LGP 7 incidence surfaces near the LED of LGP 7 incidence surfaces one side.As shown in Figure 9; Be the sketch map of present embodiment lamp bar when luminous; The light that sends away from the LED3 of LGP 7 incidence surfaces one side has certain shadow region 9b, can illuminate shadow region 9b and be arranged in the light that sends near LGP 7 incidence surfaces one row LED, makes the spacing of LED increase like this; Make radiating effect better, and also improved the phenomenon of the brightness disproportionation of display.
In sum, the beneficial effect of the utility model is:
The utility model embodiment provides a kind of backlight, and this backlight is arranged at the mode that LED adopts two row to be interspersed on the circuit board of LED, forms a LED lamp bar; Said LED lamp bar is arranged at a side of LGP incidence surface; The light that makes said LED lamp bar produced disperses to project in the LGP, arranges because the lamp on the LED lamp bar is two column distributions, has increased the spacing of LED; Therefore, can improve the LED heat dissipation problem; Simultaneously, the light of two row LED complements one another, and makes can receive the identical light of intensity on the incidence surface of whole LGP, has improved the phenomenon of LCDs brightness disproportionation.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from the spirit and the scope of the utility model.Like this, belong within the scope of the utility model claim and equivalent technologies thereof if these of the utility model are revised with modification, then the utility model also is intended to comprise these changes and modification interior.
Claims (10)
1. a backlight comprises LED and LGP, it is characterized in that,
Said LED is arranged on the led circuit plate with the mode that is interspersed, and forms LED lamp bar;
Said LED lamp bar is arranged at said LGP incidence surface one side.
2. backlight as claimed in claim 1 is characterized in that, said LED is arranged on the led circuit plate with the mode that is two parallel lines formulas distributions, and each LED does not line up in the vertical direction of parallel direction each other.
3. backlight as claimed in claim 2 is characterized in that, said two parallel lines are parallel with said LGP incidence surface.
4. backlight as claimed in claim 1; It is characterized in that; A part of LED among the said LED is arranged on the led circuit plate with the mode that the curvilinear style that extends along direction initialization distributes; Another part LED with said direction initialization linearly the mode that distributes of formula be arranged on the led circuit plate, and each LED does not line up in the vertical direction of said direction initialization each other.
5. backlight as claimed in claim 4 is characterized in that, the mode of said curved distribution is specially: interlaced with each other, and the angled mode of the light-emitting area of LED is arranged evenly.
6. backlight as claimed in claim 5 is characterized in that, the extended outside of the light-emitting area of said LED angle is between 90 °～180 °.
7. backlight as claimed in claim 5 is characterized in that, said direction initialization is parallel with said LGP incidence surface.
8. like the arbitrary described backlight of claim 1-3, it is characterized in that said LED equidistantly is distributed on the led circuit plate.
9. backlight as claimed in claim 1 is characterized in that, said circuit board is printed circuit board (PCB) or flexible PCB FPC.
10. a LCD is characterized in that, comprises the arbitrary described backlight of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204385024U CN202327843U (en) | 2011-11-08 | 2011-11-08 | Backlight source and liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204385024U CN202327843U (en) | 2011-11-08 | 2011-11-08 | Backlight source and liquid crystal display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202327843U true CN202327843U (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204385024U Expired - Lifetime CN202327843U (en) | 2011-11-08 | 2011-11-08 | Backlight source and liquid crystal display |
Country Status (1)
| Country | Link |
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| CN (1) | CN202327843U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672653A (en) * | 2012-08-30 | 2014-03-26 | 现代摩比斯株式会社 | Lighting apparatus for vehicle and manufacturing method for the same |
| CN103672652A (en) * | 2012-08-30 | 2014-03-26 | 现代摩比斯株式会社 | Lighting device of automobile |
| CN103712127A (en) * | 2013-12-23 | 2014-04-09 | 京东方科技集团股份有限公司 | Light source assembly, backlight module and display device |
| CN104949004A (en) * | 2015-06-12 | 2015-09-30 | 武汉华星光电技术有限公司 | Mobile phone backlight source |
| CN106773324A (en) * | 2017-03-03 | 2017-05-31 | 合肥京东方光电科技有限公司 | A kind of lamp bar, backlight and display device |
| CN106908994A (en) * | 2017-03-13 | 2017-06-30 | 合肥京东方光电科技有限公司 | LED light bar and the backlight module with the LED light bar |
| CN111624809A (en) * | 2019-02-28 | 2020-09-04 | 苏州璨宇光学有限公司 | Backlight module and light emitting diode light bar for backlight module |
-
2011
- 2011-11-08 CN CN2011204385024U patent/CN202327843U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103672653A (en) * | 2012-08-30 | 2014-03-26 | 现代摩比斯株式会社 | Lighting apparatus for vehicle and manufacturing method for the same |
| CN103672652A (en) * | 2012-08-30 | 2014-03-26 | 现代摩比斯株式会社 | Lighting device of automobile |
| CN103672653B (en) * | 2012-08-30 | 2016-06-08 | 现代摩比斯株式会社 | The means of illumination of automobile and manufacture method thereof |
| CN103712127A (en) * | 2013-12-23 | 2014-04-09 | 京东方科技集团股份有限公司 | Light source assembly, backlight module and display device |
| CN104949004A (en) * | 2015-06-12 | 2015-09-30 | 武汉华星光电技术有限公司 | Mobile phone backlight source |
| CN106773324A (en) * | 2017-03-03 | 2017-05-31 | 合肥京东方光电科技有限公司 | A kind of lamp bar, backlight and display device |
| CN106908994A (en) * | 2017-03-13 | 2017-06-30 | 合肥京东方光电科技有限公司 | LED light bar and the backlight module with the LED light bar |
| WO2018166184A1 (en) * | 2017-03-13 | 2018-09-20 | 京东方科技集团股份有限公司 | Led light bar and backlight module provided with said led light bar |
| US10969539B2 (en) | 2017-03-13 | 2021-04-06 | Boe Technology Group Co., Ltd. | LED light strip and backlight module having the same |
| CN111624809A (en) * | 2019-02-28 | 2020-09-04 | 苏州璨宇光学有限公司 | Backlight module and light emitting diode light bar for backlight module |
| CN111624809B (en) * | 2019-02-28 | 2022-11-15 | 苏州璨曜光电有限公司 | Backlight module and light-emitting diode lamp strip used for backlight module |
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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: JINGDONGFANG SCIENCE AND TECHNOLOGY GROUP CO., LTD Free format text: FORMER OWNER: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY CO., LTD. Effective date: 20150707 Owner name: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY Effective date: 20150707 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150707 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 city in Western Daxing District economic and Technological Development Zone, Road No. 8 Patentee before: Beijing BOE Photoelectricity Science & Technology Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |