CN207380278U - A kind of LED backlight structure - Google Patents
A kind of LED backlight structure Download PDFInfo
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- CN207380278U CN207380278U CN201720916884.4U CN201720916884U CN207380278U CN 207380278 U CN207380278 U CN 207380278U CN 201720916884 U CN201720916884 U CN 201720916884U CN 207380278 U CN207380278 U CN 207380278U
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- light
- refraction
- dot pattern
- brightening piece
- wedge shape
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Abstract
The utility model provides a kind of LED backlight structure,Including the reflection diaphragm that order is set from the bottom to top,Wedge shape light conduction board,Lower diffusion barrier sheet,Lower refraction brightening piece,Upper refraction brightening piece and upper diffusion barrier sheet,The thicker one side of Wedge shape light conduction board is incidence surface,The upper surface adjacent with incidence surface is light-emitting surface,The one side opposite with light-emitting surface is bottom surface,The incidence surface side of Wedge shape light conduction board is equipped with LED light source,The bottom surface of Wedge shape light conduction board is equipped with white dot pattern,And the diameter of white dot pattern is small on the bottom surface of light guide plate close to LED light source,The diameter of white dot pattern is big on the bottom surface of light guide plate away from LED light source,And white dot pattern is relatively large in diameter on the bottom surface of light guide plate farthest from LED light source,Fin is equipped on lower refraction brightening piece and upper refraction brightening piece,The mutually orthogonal cooperation of fin on lower refraction brightening piece and upper refraction brightening piece.The application can make the light beam on light guide plate light-emitting surface improve display brightness to normal direction concentration.
Description
Technical field
The utility model is related to display backlight technical fields, and in particular to a kind of LED backlight structure.
Background technology
With the continuous promotion of display fabrication techniques, possesses the liquid crystal display of the features such as light, thin, little power consumption
(Liquid Crystal Display, LCD) has gradually substituted traditional cathode-ray tube (Cathode Ray in recent years
Tube, CRT) display.But since liquid crystal does not have the characteristics of luminescence in itself, thus need backlight module (Back Light
Unit, BLU) light source that liquid crystal display is shown is provided, and the performance of BLU just determines the external visual impression of liquid crystal display
By.
Backlight module is made of light source, light guide plate, reflection diaphragm, optical diaphragm etc., is had brightness height, long lifespan, is shone
The features such as uniform.Mainly there are three kinds of electroluminescent (EL), light emitting diode (LED) and cold-cathode fluorescence lamp (CCFL) backlights at present
Source Type can be divided into side-light type and straight-down negative according to distribution of light sources position difference.And light guide plate and optical diaphragm are in backlight module
The propagation medium of light source, shape and material composition determine the performance of the brightness of injection light source on a liquid crystal display.But
The utility model inventor has found that in traditional backlight module, light guide plate and optical diaphragm are produced for light source
Raw beam divergence effect is poor, makes light beam can not directive liquid crystal display, thus the display on liquid crystal display is bright well
Degree is not very good.
Utility model content
The beam divergence effect generated for light guide plate in existing backlight module and optical diaphragm for light source is poor, makes light
Shu Wufa directive liquid crystal displays well, thus the technical issues of the display brightness on liquid crystal display is not very good, this reality
With a kind of novel LED backlight source structure of new offer.
In order to solve the above-mentioned technical problem, the utility model employs following technical solution：
A kind of LED backlight structure, including the reflection diaphragm, Wedge shape light conduction board, lower diffusion barrier that order is set from the bottom to top
Piece, lower refraction brightening piece, upper refraction brightening piece and upper diffusion barrier sheet, the thicker one side of the Wedge shape light conduction board are incidence surface, with
The adjacent upper surface of incidence surface be light-emitting surface, the one side opposite with light-emitting surface be bottom surface, the incidence surface side of the Wedge shape light conduction board
Side is equipped with LED light source, and the bottom surface of the Wedge shape light conduction board is equipped with white dot pattern, and in the leaded light close to the LED light source
The diameter of white dot pattern is small on plate bottom surface, and white dot pattern is straight on the bottom surface of light guide plate away from the LED light source
Footpath is big, and white dot pattern is relatively large in diameter on the bottom surface of light guide plate farthest from the LED light source, and the lower refraction adds lustre to
Piece and upper reflect are equipped with fin on brightening piece, the fin on the lower refraction brightening piece and upper refraction brightening piece is mutually orthogonal to match somebody with somebody
It closes.
Compared with prior art, in LED backlight structure provided by the utility model, the bottom surface of Wedge shape light conduction board is equipped in vain
Color dot pattern, and the diameter smallest number of white dot pattern is few on the bottom surface of light guide plate of the LED light source, away from LED
The big quantity of diameter of white dot pattern is more on the bottom surface of light guide plate of light source, and on the bottom surface of light guide plate farthest from LED light source
White dot pattern is relatively large in diameter that quantity is more, using the dispersion effect of this structure white dot pattern, in Wedge shape light conduction board
The outgoing beam of the first predetermined angle can be generated on light-emitting surface, followed by the dispersion effect of lower diffusion barrier sheet, it is pre- to become second
If the outgoing beam of angle, recycle equipped with fin structure refraction brightening piece up and down, make light beam substantially along normal direction very
Directive liquid crystal display well that is, using the refraction brightening piece up and down of mutually orthogonal cooperation, makes the light beam on light guide plate light-emitting surface
It is concentrated to normal direction, so as to improve the display brightness on liquid crystal display.
Further, it is pasted with anti-dazzling screen on two sides between the light-emitting surface of the Wedge shape light conduction board and bottom surface.
Further, the anti-dazzling screen is light-shielding sheet.
Further, the white dot pattern is the white dot chart that Wedge shape light conduction board bottom surface is produced on using silk-screen printing
Case.
Further, the lower refraction brightening piece and the upper apex angle for reflecting fin on brightening piece are 90 degree.
Description of the drawings
Fig. 1 is LED backlight structure diagram provided by the utility model.
Fig. 2 is the structure diagram of white dot pattern on Wedge shape light conduction board bottom surface in Fig. 1.
In figure, 1, reflection diaphragm；2nd, Wedge shape light conduction board；21st, incidence surface；22nd, light-emitting surface；23rd, bottom surface；231st, white is dotted
Pattern；3rd, lower diffusion barrier sheet；4th, lower refraction brightening piece；45th, fin；5th, upper refraction brightening piece；6th, upper diffusion barrier sheet；7th, LED light
Source.
Specific embodiment
In order to which the technical means, creative features, achievable purpose and effectiveness for realizing the utility model are easy to understand, under
Face combines and is specifically illustrating, and the utility model is expanded on further.
In the description of the utility model, it is to be understood that term " longitudinal direction ", " radial direction ", " length ", " width ", " thickness
The side of the instructions such as degree ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer "
Position or position relationship are based on orientation shown in the drawings or position relationship, are for only for ease of description the utility model and simplification is retouched
It states rather than indicates or imply signified device or element must have specific orientation, with specific azimuth configuration and operation,
Therefore it is not intended that limitation to the utility model.In the description of the utility model, unless otherwise indicated, " multiples' " contains
Justice is two or more.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in the description of the utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or integrally
Connection；Can be mechanical connection or electrical connection；It can be directly connected, can also be indirectly connected by intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, can above-mentioned art be understood with concrete condition
Concrete meaning of the language in the utility model.
It please refers to Fig.1 with shown in Fig. 2, the utility model provides a kind of LED backlight structure, including sequentially setting from the bottom to top
Reflection diaphragm 1, Wedge shape light conduction board 2, lower diffusion barrier sheet 3, lower refraction brightening piece 4, upper refraction brightening piece 5 and the upper diffusion barrier sheet put
6, the thicker one side of the Wedge shape light conduction board 2 is incidence surface 21, and the upper surface adjacent with incidence surface 21 is light-emitting surface 22, with light extraction
The opposite one side in face 22 is bottom surface 23, and 21 side of incidence surface of the Wedge shape light conduction board 2 is equipped with LED light source 7, and the wedge shape is guide-lighting
The bottom surface 23 of plate 2 is equipped with white dot pattern 231, and the white dot pattern on the bottom surface of light guide plate close to the LED light source 7
231 diameter is small, and the diameter of white dot pattern 231 is big on the bottom surface of light guide plate away from the LED light source 7, and from institute
State on the farthest bottom surface of light guide plate of LED light source 7 being relatively large in diameter for white dot pattern 231, i.e., farthest from the LED light source
The diameter of white dot pattern 231 is in close to and away from white on the bottom surface of light guide plate of LED light source 7 on bottom surface of light guide plate
Between the diameter of dot pattern 231, fin 45 is equipped on the lower refraction brightening piece 4 and upper refraction brightening piece 5, it will
The lower refraction brightening piece 4 and upper refraction brightening piece 5 are set to refractive prismatic lens or refractive brightening piece, are increased by the refractive
Mating plate can improve the brightness of liquid crystal display equipment screen, and the fin on the lower refraction brightening piece 4 and upper refraction brightening piece 5 is mutual
Orthogonal cooperation, i.e., by the lower refraction brightening piece 4 and upper refraction, brightening piece 5 is mutually orthogonal is used cooperatively.
Compared with prior art, in LED backlight structure provided by the utility model, the bottom surface of Wedge shape light conduction board is equipped in vain
Color dot pattern, and the diameter smallest number of white dot pattern is few on the bottom surface of light guide plate of the LED light source, away from LED
The big quantity of diameter of white dot pattern is more on the bottom surface of light guide plate of light source, and on the bottom surface of light guide plate farthest from LED light source
White dot pattern is relatively large in diameter that quantity is more, using the dispersion effect of this structure white dot pattern, in Wedge shape light conduction board
The outgoing beam of the first predetermined angle can be generated on light-emitting surface, followed by the dispersion effect of lower diffusion barrier sheet, it is pre- to become second
If the outgoing beam of angle, recycle equipped with fin structure refraction brightening piece up and down, make light beam substantially along normal direction very
Directive liquid crystal display well that is, using the refraction brightening piece up and down of mutually orthogonal cooperation, makes the light beam on light guide plate light-emitting surface
It is concentrated to normal direction, so as to improve the display brightness on liquid crystal display.
As specific embodiment, attached on two sides between the light-emitting surface 22 of the Wedge shape light conduction board 2 and bottom surface 23
There is anti-dazzling screen, it is possible thereby to better ensure that the light that the LED light source 7 is sent is propagated in 2 inner total reflection of Wedge shape light conduction board, and from
The light-emitting surface 22 of the Wedge shape light conduction board 2 projects, to complete a light original being transformed into area source.As a kind of preferred embodiment,
The anti-dazzling screen is light-shielding sheet, it is possible thereby to reduce the loss for the light that the LED light source 7 is sent, improves the utilization rate to light.
As specific embodiment, please refer to Fig.2 shown in, the white dot pattern 231 is is produced on using silk-screen printing
The white circular dot pattern of 2 bottom surface of Wedge shape light conduction board, the white circular dot pattern can select resin material to make.Meanwhile from Fig. 2
On shown Wedge shape light conduction board bottom surface from the point of view of the distribution of white dot pattern, on the bottom surface of light guide plate close to the LED light source 7
The diameter of white dot pattern 231 is small, the diameter of white dot pattern 231 on the bottom surface of light guide plate away from the LED light source 7
Greatly, white dot pattern 231 is relatively large in diameter and on the bottom surface of light guide plate farthest from the LED light source 7, using such structure
Design, it is ensured that entire screen brightness of LCD uniformity.
As specific embodiment, the apex angle α of fin 45 is 90 degree on the lower refraction brightening piece 4 and upper refraction brightening piece 5,
And upper and lower two fin in the block is mutually orthogonal is used cooperatively when ensureing to use, in the foregoing wedge shape with white dot pattern 231
Under being used cooperatively of light guide plate 2, using the dispersion effect of the white dot pattern, the first predetermined angle (about 60 degree) is generated
Outgoing beam followed by the scattering refraction effect of lower diffusion sheet, becomes the outgoing beam of the second predetermined angle (about 30 degree),
The refraction brightening piece up and down equipped with fin structure is recycled, makes light beam substantially along normal direction directive liquid crystal display well
Screen.As a result, using two pieces of mutually orthogonal refractive brightening pieces, make each ingredient on 2 light-emitting surface 22 of Wedge shape light conduction board
Light beam is concentrated to normal direction and projected, so as to improve the display brightness of liquid crystal display.
Finally illustrate, above example is merely intended for describing the technical solutions of the present application, but not for limiting the present application, although ginseng
The utility model is described in detail according to preferred embodiment, it will be understood by those of ordinary skill in the art that, it can be to this
The technical solution of utility model is modified or replaced equivalently, without departing from the objective and model of technical solutions of the utility model
It encloses, should all cover among the right of the utility model.
Claims (5)
1. a kind of LED backlight structure, which is characterized in that reflection diaphragm (1), wedge shape including order setting from the bottom to top are guide-lighting
Plate (2), lower diffusion barrier sheet (3), lower refraction brightening piece (4), upper refraction brightening piece (5) and upper diffusion barrier sheet (6), the wedge shape are led
The thicker one side of tabula rasa (2) is incidence surface (21), and adjacent upper surface is light-emitting surface (22) with incidence surface (21), with light-emitting surface
(22) opposite one side is bottom surface (23), and incidence surface (21) side of the Wedge shape light conduction board (2) is equipped with LED light source (7), described
The bottom surface (23) of Wedge shape light conduction board (2) is equipped with white dot pattern (231), and close to the light guide plate bottom of the LED light source (7)
The diameter of white dot pattern is small on face, the diameter of white dot pattern on the bottom surface of light guide plate away from the LED light source (7)
Greatly, white dot pattern is relatively large in diameter and on the bottom surface of light guide plate farthest from the LED light source (7), and the lower refraction increases
Fin (45), the lower refraction brightening piece (4) and upper refraction brightening piece (5) are equipped on mating plate (4) and upper refraction brightening piece (5)
On fin (45) mutually orthogonal cooperation.
2. LED backlight structure according to claim 1, which is characterized in that the light-emitting surface of the Wedge shape light conduction board (2)
(22) it is pasted with anti-dazzling screen on two sides between bottom surface (23).
3. LED backlight structure according to claim 2, which is characterized in that the anti-dazzling screen is light-shielding sheet.
4. LED backlight structure according to claim 1, which is characterized in that the white dot pattern (231) is use
Silk-screen printing is produced on the white circular dot pattern of Wedge shape light conduction board bottom surface.
5. LED backlight structure according to claim 1, which is characterized in that the lower refraction brightening piece (4) and upper refraction
The apex angle of fin (45) is 90 degree on brightening piece (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720916884.4U CN207380278U (en) | 2017-07-26 | 2017-07-26 | A kind of LED backlight structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720916884.4U CN207380278U (en) | 2017-07-26 | 2017-07-26 | A kind of LED backlight structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207380278U true CN207380278U (en) | 2018-05-18 |
Family
ID=62299100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720916884.4U Active CN207380278U (en) | 2017-07-26 | 2017-07-26 | A kind of LED backlight structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207380278U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109188834A (en) * | 2018-09-03 | 2019-01-11 | 深圳小淼科技有限公司 | A kind of projector |
| CN112394573A (en) * | 2020-12-11 | 2021-02-23 | 张志成 | Side-in type LED backlight module and use method thereof |
| CN114721082A (en) * | 2022-04-24 | 2022-07-08 | 业成科技（成都）有限公司 | Backlight module and display device |
-
2017
- 2017-07-26 CN CN201720916884.4U patent/CN207380278U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109188834A (en) * | 2018-09-03 | 2019-01-11 | 深圳小淼科技有限公司 | A kind of projector |
| CN112394573A (en) * | 2020-12-11 | 2021-02-23 | 张志成 | Side-in type LED backlight module and use method thereof |
| CN114721082A (en) * | 2022-04-24 | 2022-07-08 | 业成科技（成都）有限公司 | Backlight module and display device |
| CN114721082B (en) * | 2022-04-24 | 2023-07-04 | 业成科技（成都）有限公司 | Backlight module and display device |
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