CN202403115U - Assembling structure of straight down-type backlight source of liquid crystal display - Google Patents
Assembling structure of straight down-type backlight source of liquid crystal display Download PDFInfo
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- CN202403115U CN202403115U CN2011205711938U CN201120571193U CN202403115U CN 202403115 U CN202403115 U CN 202403115U CN 2011205711938 U CN2011205711938 U CN 2011205711938U CN 201120571193 U CN201120571193 U CN 201120571193U CN 202403115 U CN202403115 U CN 202403115U
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Abstract
The utility model relates to a straight down-type backlight source of a liquid crystal display and discloses an assembling structure of the straight down-type backlight source of the liquid crystal display aiming to the defects brought by uniform distribution of light-emitting diodes (LED) in the prior art. The assembling structure comprises a base plate and lamp bars, wherein the lamp bars are provided with N LEDs; the base plate is provided with M lamp bars, wherein N and M are positive integers; the lamp bars are divided into two groups, each lamp bar in each group is vertically connected on the same frame; and the two groups of the lamp bars are respectively and crossly arranged; and the lamp bars are parallel mutually. The technical scheme of the assembling structure is as follows: the lamp bars forming the backlight source are divided into two groups and are respectively connected; the distance between the lamp bars can be adjusted through the relative movement of the two groups of the lamp bars, so that the condition that the requirements of display luminance uniformity are satisfied is ensured, the trouble to adjust the distance between the lamp bars one by one is avoided in the prior art, the production efficiency and the positioning precision are improved; and the adjustment is more convenient.
Description
Technical field
The utility model relates to LCDs, particularly liquid crystal screen back light source, the concrete direct-light-type backlight that relates to.
Background technology
LCDs (LCD) is a kind of flat-panel display device, thereby its operation principle is to utilize liquid crystal material modulating action to light under electric field action to produce various light and shade and color change formation image.Because liquid crystal material itself is not luminous, LCDs all needs special backlight.According to the difference of backlight set-up mode,, the branch of side entrance back source and direct-light-type backlight is arranged with the liquid crystal screen back light source of LED (light emitting diode) as light-emitting component.Adopt the LCD of direct-light-type backlight, its backlight directly places liquid crystal display behind.This back light source structure is as shown in Figure 1, and LED10 is arranged on the substrate 1 as light-emitting component, and the LED10 on the substrate 1 is connected with driving power through circuit.Substrate 1 shape is basic identical with size and the effective viewing area of liquid crystal display, is generally rectangle or square.In order to guarantee brightness uniformity, the LED on the substrate requires to be evenly distributed, so that effectively forming the even brightness luminous flat in the scope of viewing area.So the distance between each LED all equates usually.Fig. 1 shows 16 lamp bars 11 and vertically is arranged on the substrate 1,16: 9 screen LED distributions of 9 LED that evenly distribute on every lamp bar 11.Production and processing for ease, lamp bar length all is identical with width usually.This equally distributed LED-backlit source, even considered the dispersiveness of light-emitting component parameter, the brightness uniformity of its LCDs also can reach more than 85%, even surpasses 90%.In actual production process, LED is packaged into strip usually, is called LED lamp bar, or abbreviates the lamp bar as, is made up of PCB (printed circuit board (PCB)) usually, and LED evenly distributes on the every lamp bar.Arrange 1 row (or 1 row) LED on the general every lamp bar, the lamp bar evenly distributes on substrate 1.Like this, in the whole base plate plane, LED is exactly equally distributed.If evenly distributed multiple row LED on the every lamp bar, and evenly distributing, then the row of lamp bar LED on the row distance of vertically arranging on the substrate 1 and lamp bar are apart from equating; If arrange multirow LED on the every lamp bar, and evenly distribute, the line-spacing of lamp bar LED on line-spacing transversely arranged on the substrate 1 and lamp bar equates that in the whole base plate plane, LED also is equally distributed.The backlight of this employing lamp bar assembly unit, the assembling process more complicated, required precision is high, and particularly the positioning accuracy of lamp bar on substrate is difficult to guarantee.And the equally distributed backlight of this LED, along with the increase of screen size, LED quantity sharply increases, and product cost is increasingly high, and energy resource consumption is increasing.And common human eye is also insensitive to brightness uniformity, evidence, and when brightness uniformity reached 70%～75%, the brightness uniformity index continued to improve, and does not have substantial variation on the sense organ, and its practical significance is little.
The utility model content
The utility model technical problem to be solved is exactly to the prior art direct LED backlight, and the shortcoming that LED evenly distributes and brings provides a kind of LCDs direct-light-type backlight splicing structure.
The utility model solve the technical problem, and the technical scheme of employing is that LCDs direct-light-type backlight splicing structure comprises substrate, lamp bar; N LED is installed on the said lamp bar, M bar lamp bar is installed on the said substrate, wherein, N; M is a positive integer, it is characterized in that, said lamp bar is divided into two groups; Each lamp bar is vertically connected on the same frame in every group, two groups of lamp bar difference cross-over configuration, and each lamp bar is parallel to each other.
The technical scheme of the utility model is divided into two groups with the lamp bar that constitutes backlight, and they is coupled together respectively; Two groups of lamp bar cross-over configuration in the time of assembling; Can adjust the distance between the lamp bar through relatively moving of two groups of lamp bars, meet the demands (70%), needing in the prior art avoid the trouble of one one adjustment lamp bar distance to guarantee the screen intensity uniformity; Improved production efficiency and positioning accuracy, and adjusted more convenient.
Concrete, in every group, each lamp stripe pitch is identical or different.
The technical scheme of the utility model; In two groups of lamp bars; The spacing of individual lamp bar can be identical also can be inequality; But the minimum of a value of spacing should guarantee the normal assembling of another group lamp bar, and assembling back brightness uniformity should meet the demands, and concrete ultimate range and LED luminance parameter and concrete brightness uniformity index are relevant.
Concrete, two groups of lamp stripe pitch are identical or different.
In this scheme, separately spacing can be set respectively in two groups of lamp bars, and is both can two groups of lamp bars identical, also can be inequality, and basic principle remains, and assembling back brightness uniformity should meet the demands.For two groups of technical schemes that the lamp stripe pitch is identical, two groups of lamp bars can exchange, and are convenient to standardized production.And for two groups of technical schemes that the lamp stripe pitch is inequality, design flexibility is high, can satisfy the technical scheme of non-uniform Distribution LED.
Further, said lamp bar evenly distributes or non-uniform Distribution on substrate.
In this scheme,, can obtain LED and evenly distribute and two kinds of backlight technical schemes of non-uniform Distribution according to LED distribution situation on the lamp bar.
Further, LED evenly distributes or non-uniform Distribution on the said lamp bar.
The flexible configuration of the utility model lamp bar, the assembly unit of LED is flexible with relatively on the lamp bar.
Further, said lamp bar vertically disposes or landscape configuration on substrate.
This is two kinds of lamp bar allocation plans commonly used, according to different screen size and lamp bar length, carries out flexible configuration, satisfies the needs of various backlights.
Recommend, lamp bar quantity is identical in two groups.
Lamp bar quantity is identical in two groups, can two groups of lamp bars of manufacturing place identical in structure, be convenient to production, assembling, maintenance etc.Be particularly suitable for two groups of lamp bar identical in structure versions.
Preferably, lamp bar quantity differs one in two groups.
This is a kind of distinctive situation of two groups of lamp bar cross-over configuration, can form rectangle or foursquare backlight module equally, is particularly suitable for two groups of versions that the lamp stripe pitch is identical.
The utility model divides beneficial effect to be, the configuration relation of convenient adjustment backlight lamp bar guarantees that brightness uniformity satisfies the demand.Adopt the arrangement of LED non-uniform Distribution, can also reduce LED use amount in the direct-light-type backlight, reduce lamp bar quantity, according to screen size, it is about 5%～25% to reduce LED quantity, have energy-saving and cost-reducing, the positive effect that reduces cost.
Description of drawings
Fig. 1 is a prior art direct-light-type backlight LED distribution schematic diagram;
Fig. 2 is 1 liang of group of embodiment lamp bar structural representation;
Fig. 3 is 1 liang of group of embodiment lamp bar splicing structure sketch map;
Fig. 4 is 2 liang of groups of embodiment lamp bar splicing structure sketch map;
Fig. 5 is 3 liang of groups of embodiment lamp bar splicing structure sketch map;
Fig. 6 is 4 liang of groups of embodiment lamp bar structural representation;
Fig. 7 is 4 liang of groups of embodiment lamp bar splicing structure sketch map;
Fig. 8 is 5 liang of groups of embodiment lamp bar splicing structure sketch map.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, describe the technical scheme of the utility model in detail.
The technical scheme of the utility model; Assembly unit is adjusted to direct LED backlight lamp bar; No longer be confined to traditional erection method that LED evenly arranges; Its lamp bar assembling scheme not only is applicable to the equally distributed backlight module of LED, also goes for the backlight module of LED non-uniform Distribution.For LED non-uniform Distribution backlight module; Guaranteeing that the brightness uniformity index satisfies under the prerequisite of basic need (screen intensity uniformity＞70%), it is about 5%～25% to reduce LED quantity, and can reduce lamp bar quantity; Reach energy-saving and cost-reducing, the requirement that reduces cost.
Embodiment 1
Referring to Fig. 2 and shown in Figure 3, this routine LCDs direct-light-type backlight splicing structure comprises substrate (not shown), lamp bar, and the LED (not shown) is installed on the lamp bar.8 lamp bars are installed on this spr substrate, and these 8 lamp bars are divided into two groups, 4 lamp bars are arranged in every group, are vertically connected on respectively on frame 12 and the frame 22, and during assembly unit, two groups of lamp bars are cross-over configuration respectively, and each lamp bar is parallel to each other.First group of lamp bar 11 is vertically connected on the frame 12 among Fig. 2, and second group of lamp bar 21 is vertically connected on back (embodiment of back is identical therewith) on the frame 22.Among Fig. 3, first group of lamp bar 11 and second group of lamp bar 21 difference cross-over configuration, lamp bar 11 is parallel to each other with lamp bar 21.This example adopts the evenly scheme of configuration, and two groups of lamp bar structures are identical, in each group between the lamp bar distance equate, i.e. k1=k2, in every group between the lamp bar spacing all equate (being k1 or k2).Two groups of lamp bars vertically dispose (lamp bar length is corresponding with the LCDs height), and spacing a equates between the assembly unit back light bar, and two groups of lamp bars are evenly distributed on the substrate (spacing a and lamp bar quantity and LCDs width with respect to).The backlight of this splicing structure, standardization level is high, and interchangeability is high, convenient production and debugging.The backlight module of this structure, LED can evenly arrange or non-homogeneous layout on the lamp bar, can form the backlight of equally distributed backlight of LED and LED non-uniform Distribution respectively.The LCDs brightness uniformity can be adjusted through the distance of LED on adjustment lamp stripe pitch k and the lamp bar.
Embodiment 2
This routine backlight module splicing structure is as shown in Figure 4, and first group of lamp bar is made up of 3 lamp bars, and second group of lamp bar structure is identical with embodiment 1; This example is except few one of first group of lamp bar quantity; Splicing structure is identical with embodiment 1, also is the vertically evenly splicing structure of configuration of a kind of lamp bar, and the spacing a between two groups of lamp bars equates; Spacing k in each group between the lamp bar is identical with embodiment 1, and this example can be used for the backlight of rectangle LCDs.This structure lamp bar quantity reduces to some extent, but interchangeability is relatively poor.
Embodiment 3
This routine LCDs direct-light-type backlight splicing structure, lamp bar arrangement mode is different with embodiment 1.Though the lamp bar also is vertical cross-over configuration, lamp stripe pitch k equates in each group, and spacing b and c between two groups of lamp bar assembly unit back light bars are unequal.As shown in Figure 5.This structure, lamp bar right and wrong on substrate are equally distributed, and no matter whether LED evenly distributes on the lamp bar, can constitute the back light source structure of LED non-uniform Distribution on substrate, reaches the purpose that reduces the LED consumption.These routine two groups of lamp bar structures also are identical, can exchange.Through adjusting the uniformity that two groups of spacing b and c between the lamp bar assembly unit back light bar can adjust LCDs brightness.
Embodiment 4
In this example.Between first group of lamp bar 11 between spacing k and the second group of lamp bar 21 spacing k2 inequality, i.e. k ≠ k2.Spacing between the spacing between first group of lamp bar and not all be k, second group of lamp bar neither all be that k2 is referring to Fig. 6.Structure is as shown in Figure 7 after the assembly unit of two groups of lamp bars, and spacing is inequality between each lamp bar.This example also is the scheme of lamp bar non-uniform Distribution on the substrate, can be used for the backlight module of LED non-uniform Distribution on substrate, and the LED on this routine lamp bar 11,12 can evenly distribute or non-uniform Distribution.
Embodiment 5
As shown in Figure 8; This routine two groups of lamp bars 11,12 across configuration (lamp bar length is corresponding with the LCDs width) respectively; Each lamp bar is parallel to each other, and lamp bar 11, the spacing between 12 are unequal, and lamp bar quantity and lamp stripe pitch sum are corresponding with the LCDs height.Two groups of lamp bars are distributed as non-uniform Distribution in this example on substrate, and first group of lamp bar quantity is 5, and second group of lamp bar quantity is 4.Each is organized in the lamp bar, and spacing is unequal between the lamp bar, and spacing is also inequality between the assembly unit back light bar.The same with the foregoing description, in this example on each lamp bar LED also can evenly distribute or non-uniform Distribution.
Among above-mentioned each embodiment, frame 12,22 generally all is in outside the effective viewing area of LCDs, and main effect is the structure connection and is electrically connected the lamp bar in each group, LED generally is not installed on the frame 12,22.The foregoing description can not limit the utility model embodiment, each lamp stripe pitch, the assembly unit density of LED, uniformity etc. have only the requirement of satisfying brightness uniformity index＞70% generally on the lamp bar, its configuration is flexibly.Version is varied, and is too numerous to enumerate.
Claims (8)
1. LCDs direct-light-type backlight splicing structure comprises substrate, lamp bar, and N LED is installed on the said lamp bar; M bar lamp bar is installed on the said substrate, wherein, N; M is a positive integer, it is characterized in that, said lamp bar is divided into two groups; Each lamp bar is vertically connected on the same frame in every group, two groups of lamp bar difference cross-over configuration, and each lamp bar is parallel to each other.
2. LCDs direct-light-type backlight splicing structure according to claim 1 is characterized in that, in every group, each lamp stripe pitch is identical or different.
3. LCDs direct-light-type backlight splicing structure according to claim 1 is characterized in that two groups of lamp stripe pitch are identical or different.
4. LCDs direct-light-type backlight splicing structure according to claim 1 is characterized in that, said lamp bar evenly distributes or non-uniform Distribution on substrate.
5. LCDs direct-light-type backlight splicing structure according to claim 1 is characterized in that, LED evenly distributes or non-uniform Distribution on the said lamp bar.
6. LCDs direct-light-type backlight splicing structure according to claim 1 is characterized in that, said lamp bar vertically disposes or landscape configuration on substrate.
7. according to any described LCDs direct-light-type backlight splicing structure of claim 1～6, it is characterized in that lamp bar quantity is identical in two groups.
8. according to any described LCDs direct-light-type backlight splicing structure of claim 1～6, it is characterized in that lamp bar quantity differs one in two groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205711938U CN202403115U (en) | 2011-12-31 | 2011-12-31 | Assembling structure of straight down-type backlight source of liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205711938U CN202403115U (en) | 2011-12-31 | 2011-12-31 | Assembling structure of straight down-type backlight source of liquid crystal display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202403115U true CN202403115U (en) | 2012-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205711938U Expired - Fee Related CN202403115U (en) | 2011-12-31 | 2011-12-31 | Assembling structure of straight down-type backlight source of liquid crystal display |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107062045A (en) * | 2017-04-25 | 2017-08-18 | 东莞市闻誉实业有限公司 | Led lamp |
| WO2023115882A1 (en) * | 2021-12-25 | 2023-06-29 | 深圳市兆驰光元科技有限公司 | Backlight panel, display module, and electronic apparatus |
| CN117055260A (en) * | 2023-08-23 | 2023-11-14 | 深圳市汇晨电子股份有限公司 | Mini LED backlight |
-
2011
- 2011-12-31 CN CN2011205711938U patent/CN202403115U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107062045A (en) * | 2017-04-25 | 2017-08-18 | 东莞市闻誉实业有限公司 | Led lamp |
| WO2023115882A1 (en) * | 2021-12-25 | 2023-06-29 | 深圳市兆驰光元科技有限公司 | Backlight panel, display module, and electronic apparatus |
| CN117055260A (en) * | 2023-08-23 | 2023-11-14 | 深圳市汇晨电子股份有限公司 | Mini LED backlight |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 Termination date: 20151231 |
|
| EXPY | Termination of patent right or utility model |