CN202708854U - Backlight source and display device - Google Patents
Backlight source and display device Download PDFInfo
- Publication number
- CN202708854U CN202708854U CN2012203627533U CN201220362753U CN202708854U CN 202708854 U CN202708854 U CN 202708854U CN 2012203627533 U CN2012203627533 U CN 2012203627533U CN 201220362753 U CN201220362753 U CN 201220362753U CN 202708854 U CN202708854 U CN 202708854U
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- light
- guiding pillar
- light guide
- backlight
- lgp
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Abstract
The utility model discloses a backlight source and a display device. The backlight source comprises a light guide plate, an LED (light-emitting diode) lamp strip, and a light guide column net plate, wherein the LED lamp strip is arranged at the side of the light guide plate and comprises a plurality of LEDs, and the light guide column net plate is arranged below the light guide plate and the LED lamp strip, and comprises a plurality of light guide columns which are arranged in an array and protrude towards one side of the light guide plate. According to the technical scheme of the utility model, the light guide columns of the light guide column net plate can refract and reflect a ray emitted by a light source and change the light propagation direction due to the fact that the light guide column net plate is arranged below the light guide plate, so that the light enters from the lower surface of the light guide plate; regional dimming of the backlight source can be achieved by controlling the brightness of corresponding LED, and power consumption of the backlight source is greatly reduced.
Description
Technical field
The utility model relates to the Display Technique field, particularly relates to a kind of backlight and a kind of display unit.
Background technology
At present, the backlight of liquid crystal indicator generally adopts LED(light-emitting diode, and light emitting diode is called for short LED) as light source, according to the distributing position of light source, backlight can be divided into two kinds of straight-down negative and side entering types.As shown in Figure 1, the light source of direct-light-type backlight (being LED lamp bar 2) is distributed in the bottom of LGP 1, and such backlight is mainly used in the large scale liquid crystal display unit such as display, TV.As shown in Figure 2, the light source of side-edge type backlight (being LED lamp bar 2) is distributed in the side of LGP 1, such backlight is mainly used in the small size display unit such as notebook, palm PC and mobile phone, continuous progress along with the LED correlation technique, side-edge type backlight equally also begins to be applied to the display unit of large-size, for the user brings better visual experience.
Traditional backlight, whole picture integral body are lighted or are whole dimmed, can't realize subregion light modulation (Local Dimming), for example, when certain zone of picture when black, light source still is in brighter state, the power consumption of backlight is higher.
The utility model content
The purpose of this utility model provides a kind of backlight and a kind of display unit, in order to realize the local dimming of backlight, further reduces the power consumption of backlight.
The utility model backlight comprises:
LGP;
LED lamp bar is positioned at the side of LGP, comprises a plurality of LED;
The light-guiding pillar web plate is positioned at the below of LGP and LED lamp bar, has protrudingly to be the light-guiding pillar that array-like is arranged to LGP one side a plurality of.
Preferably, described LED lamp bar is two, lays respectively at two adjacent sides of LGP, described a plurality of every delegation and respectively corresponding LED of each row that are the light-guiding pillar that array-like arranges.
Better, described light-guiding pillar is cylindrical or prismatic.
Better, described light-guiding pillar web plate has engraved structure in the position except light-guiding pillar.
The utility model backlight comprises:
LGP;
The light-guiding pillar web plate is positioned at the below of LGP, has protrudingly to be the light-guiding pillar that array-like is arranged to LGP one side a plurality of;
A plurality ofly be the LED that array-like is arranged, be positioned at the below of light-guiding pillar web plate, the corresponding light-guiding pillar of each LED.
Preferably, described light-guiding pillar has opening towards the U-lag of LGP.
The utility model display unit comprises the backlight described in the aforementioned techniques scheme.
In technical solutions of the utility model, because the light-guiding pillar web plate is set below LGP, the light-guiding pillar of light-guiding pillar web plate can reflect the light that light source sends and reflect, change the direction of propagation of light, light is injected from the lower surface of LGP, can realize the local dimming of backlight by the brightness of controlling corresponding LED, greatly reduce the power consumption of backlight.
Description of drawings
Fig. 1 is the perspective view of existing direct-light-type backlight;
Fig. 2 is the perspective view of existing side-edge type backlight;
Fig. 3 is the schematic top plan view of the side-edge type backlight of the utility model embodiment;
Fig. 4 is the schematic cross-section of the side-edge type backlight of the utility model embodiment;
Fig. 5 is the perspective view of light-guiding pillar web plate and the LED lamp bar of the utility model embodiment;
Fig. 6 is the schematic cross-section of the direct-light-type backlight of the utility model embodiment.
Reference numeral:
The second LEDs 4a-U shape groove of the 3rd LEDs 22-minor face LED lamp bar of the long limit of 23-, 1-LGP 2-LED lamp bar 2a-LED 3-light-guiding pillar web plate 4-light-guiding pillar 5-square zone LED lamp bar
The specific embodiment
In order to solve the higher technical problem of power consumption of existing backlight, the utility model provides a kind of backlight and a kind of display unit.
Such as Fig. 3, Fig. 4 and shown in Figure 5, side-edge type backlight provided by the utility model comprises:
LGP 1;
Light-guiding pillar web plate 3 is positioned at the below of LGP 1 and LED lamp bar 2, has protrudingly to be the light-guiding pillar 4 that array-like is arranged to LGP 1 one sides a plurality of.
The principle that realizes the backlight region light modulations by light-guiding pillar web plate 3 as shown in Figure 4 and Figure 5, a plurality of be light-guiding pillar 4 that array-like arranges so that light can be comparatively average enter each branch road, darker when regional when the square zone 5 among the figure being shown as, can turn down the brightness of the second LEDs 22 of the 3rd LEDs 23 of long limit LED lamp bar and minor face LED lamp bar, make square zone 5 dimmed.
In this technical scheme, because the light-guiding pillar web plate is set below LGP, the light-guiding pillar of light-guiding pillar web plate can reflect the light that light source sends and reflect, change the direction of propagation of light, light is injected from the lower surface of LGP, can realize the local dimming of backlight by the brightness of controlling corresponding LED, greatly reduce the power consumption of backlight.
Described LED lamp bar can be one; Also can be two, lay respectively at two relative sides of LGP; Can also be four, lay respectively at four sides of LGP.Further, among Fig. 5, described LED lamp bar 2 is two, lay respectively at two adjacent sides of LGP 1, described a plurality of be light-guiding pillar 4 that array-like arranges in the row direction with column direction on corresponding with the LED 2a of two LED lamp bars 2 respectively, i.e. a plurality of every delegation and respectively corresponding LED 2a of each row that are the light-guiding pillar 4 that array-like arranges.Suppose that long limit LED lamp bar has m LED, minor face LED lamp bar has n LED(m, n for greater than 1 integer), being the light-guiding pillar that array-like arranges is m*n, then backlight is divided into m*n zone, by controlling corresponding two LED in zone, can realize this regional brightness regulation.
Preferably, described light-guiding pillar web plate 3 has engraved structure in the position except light-guiding pillar 4.Can alleviate like this weight of light-guiding pillar web plate, reduce flexural deformation, and the effect of influence area light modulation not.
The concrete shape of light-guiding pillar 4 is not limit, for example, can be for cylindrical, prismatic etc., its Main Function is to change light path by refraction by prism and reflection.
As shown in Figure 6, direct-light-type backlight provided by the utility model comprises:
LGP 1;
Light-guiding pillar web plate 3 is positioned at the below of LGP 1, has protrudingly to be the light-guiding pillar 4 that array-like is arranged to LGP 1 one sides a plurality of;
A plurality ofly be the LED 2a that array-like is arranged, be positioned at the below of light-guiding pillar web plate 3, the corresponding light-guiding pillar 4 of each LED 2a.
In this technical scheme, the below of LGP arranges the light-guiding pillar web plate, a plurality ofly is the below that LED that array-like arranges is positioned at the light-guiding pillar web plate, can realize the local dimming of backlight by the brightness of controlling corresponding LED, greatly reduces the power consumption of backlight.
Please continue with reference to shown in Figure 6, among this embodiment, light-guiding pillar 4 has opening towards U-lag 4a(or the class U-lag of LGP 1), like this, LED 2a is positioned at the below of light-guiding pillar 4, the light that LED 2a sends is divided into two parts after passing light-guiding pillar 4, can regulate respectively this two parts light by control LED, the feasible region light modulation, therefore, the quantity of LED can be reduced half, greatly reduce the power consumption of backlight.
The concrete shape of light-guiding pillar 4 is not restricted to above-mentioned shape, for example, can also for cylindrical, prismatic etc., can realize equally the local dimming of backlight.
The utility model also provides a kind of display unit, comprises the side-edge type backlight described in the aforementioned techniques scheme or direct-light-type backlight, in the feasible region light modulation, has the lower advantage of power consumption.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and modification interior.
Claims (8)
1. a backlight is characterized in that, comprising:
LGP;
LED lamp bar is positioned at the side of LGP, comprises a plurality of LED;
The light-guiding pillar web plate is positioned at the below of LGP and LED lamp bar, has protrudingly to be the light-guiding pillar that array-like is arranged to LGP one side a plurality of.
2. backlight as claimed in claim 1 is characterized in that, described LED lamp bar is two, lays respectively at two adjacent sides of LGP, described a plurality of every delegation and respectively corresponding LED of each row that are the light-guiding pillar that array-like arranges.
3. backlight as claimed in claim 1 or 2 is characterized in that, described light-guiding pillar is cylindrical or prismatic.
4. backlight as claimed in claim 3 is characterized in that, described light-guiding pillar web plate has engraved structure in the position except light-guiding pillar.
5. a display unit is characterized in that, comprises such as each described backlight in the claim 1 ~ 4.
6. a backlight is characterized in that, comprising:
LGP;
The light-guiding pillar web plate is positioned at the below of LGP, has protrudingly to be the light-guiding pillar that array-like is arranged to LGP one side a plurality of;
A plurality ofly be the LED that array-like is arranged, be positioned at the below of light-guiding pillar web plate, the corresponding light-guiding pillar of each LED.
7. backlight as claimed in claim 6 is characterized in that, described light-guiding pillar has opening towards the U-lag of LGP.
8. a display unit is characterized in that, comprises such as claim 6 or 7 described backlights.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203627533U CN202708854U (en) | 2012-07-18 | 2012-07-18 | Backlight source and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203627533U CN202708854U (en) | 2012-07-18 | 2012-07-18 | Backlight source and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202708854U true CN202708854U (en) | 2013-01-30 |
Family
ID=47589154
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203627533U Expired - Lifetime CN202708854U (en) | 2012-07-18 | 2012-07-18 | Backlight source and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202708854U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948998A (en) * | 2014-03-27 | 2015-09-30 | 乐金显示有限公司 | Backlight unit and liquid crystal display device having the same |
| CN107943402A (en) * | 2017-11-30 | 2018-04-20 | 努比亚技术有限公司 | Regional luminance control method, intelligent terminal and computer-readable recording medium |
| CN109203217A (en) * | 2018-09-14 | 2019-01-15 | 吕梅莲 | A kind of non-light tight concrete light-guiding pillar module and its application method |
| CN112992083A (en) * | 2021-04-01 | 2021-06-18 | 上海天马微电子有限公司 | Drive circuit, display panel and display device |
-
2012
- 2012-07-18 CN CN2012203627533U patent/CN202708854U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104948998A (en) * | 2014-03-27 | 2015-09-30 | 乐金显示有限公司 | Backlight unit and liquid crystal display device having the same |
| CN107943402A (en) * | 2017-11-30 | 2018-04-20 | 努比亚技术有限公司 | Regional luminance control method, intelligent terminal and computer-readable recording medium |
| CN107943402B (en) * | 2017-11-30 | 2021-04-30 | 努比亚技术有限公司 | Regional brightness control method, intelligent terminal and computer readable storage medium |
| CN109203217A (en) * | 2018-09-14 | 2019-01-15 | 吕梅莲 | A kind of non-light tight concrete light-guiding pillar module and its application method |
| CN112992083A (en) * | 2021-04-01 | 2021-06-18 | 上海天马微电子有限公司 | Drive circuit, display panel and display device |
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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: 20150707 Owner name: JINGDONGFANG SCIENCE AND TECHNOLOGY GROUP CO., LTD Free format text: FORMER OWNER: BEIJING BOE PHOTOELECTRICITY SCIENCE + TECHNOLOGY CO., LTD. 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 OPTOELECTRONICS TECHNOLOGY Co.,Ltd. Address before: 100176 Beijing city in Western Daxing District economic and Technological Development Zone, Road No. 8 Patentee before: BEIJING BOE OPTOELECTRONICS TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130130 |
|
| CX01 | Expiry of patent term |