CN111007683A - Support LED backlight - Google Patents
Support LED backlight Download PDFInfo
- Publication number
- CN111007683A CN111007683A CN202010039752.4A CN202010039752A CN111007683A CN 111007683 A CN111007683 A CN 111007683A CN 202010039752 A CN202010039752 A CN 202010039752A CN 111007683 A CN111007683 A CN 111007683A
- Authority
- CN
- China
- Prior art keywords
- light
- arc surface
- guide plate
- light guide
- display area
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Planar Illumination Modules (AREA)
Abstract
The invention relates to a bracket LED backlight source which comprises shading adhesive cloth, diffusion adhesive cloth, a light guide plate and reflection adhesive cloth which are sequentially arranged from top to bottom, wherein the light guide plate is provided with a display area and a non-display area, a fixing groove for fixing LED lamp beads is formed in the non-display area, an arc light incoming surface is concavely arranged on the inner wall of the fixing groove in the direction from the display area, and the light incoming surface is positioned in front of the light emitted by the LED lamp beads. The LED backlight source has the advantages of reasonable structure, novel design and strong practicability, light rays of the LED lamp beads can be fully diffused through the arc-shaped light incoming surface, the optical quality of the backlight source is improved, the light source is a bracket type LED and is fixed in the fixing groove of the light guide plate through a dispensing process, a stable light source is provided for the light guide plate, the production process of the backlight source is simplified, the adoption of a PCB (printed circuit board) and a reflow soldering process is avoided, welding is not needed, the reliability of the backlight source structure is improved, the structure is stable, the production yield of the backlight source is improved, and.
Description
Technical Field
The invention relates to the technical field of backlight sources, in particular to a bracket LED backlight source.
Background
The backlight source is a light source located at the back of the liquid crystal display, and the light emitting effect of the backlight source directly influences the visual effect of the liquid crystal display module. At present, a PCB (printed circuit board) is required to be adopted in a traditional backlight source, an LED is welded on the PCB to form an LED assembly, then an assembly technology is adopted to assemble the LED assembly on a light guide plate, a reflow soldering process is required to be adopted in the LED welding process, poor problems such as insufficient soldering, false soldering and the like easily occur in the reflow soldering process, the LED power connection structure is unstable, the LED does not emit light easily, the connection stability between the LED assembly and the light guide plate is poor, the poor problems such as looseness and the like easily occur, and the quality of the backlight source is affected.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a bracket LED backlight source.
In order to achieve the purpose, the technical scheme provided by the invention is as follows: the utility model provides a support LED backlight, includes shading that from the top down set gradually and pastes cloth, diffusion subsides cloth, light guide plate, reflection and pastes cloth, the light guide plate is provided with display area and non-display area, opens the fixed slot that has fixed LED lamp pearl in the non-display area, the concave arc income plain noodles that is equipped with of fixed slot inner wall toward the display area direction, should go into the plain noodles and be located the place ahead that LED lamp pearl sent light.
In the technical scheme, the inner wall of the fixing groove is provided with the glue dispensing groove, and glue for fixedly gluing the outer wall of the LED lamp bead and the inner wall of the fixing groove is filled in the glue dispensing groove.
In the above technical solution, the dispensing groove is arranged along the thickness direction of the light guide plate.
In the above technical scheme, the income plain noodles is including the first cambered surface, second cambered surface, the third cambered surface that connect gradually, first cambered surface and third cambered surface symmetry set up in second cambered surface both sides, the cambered surface radius of second cambered surface is greater than the cambered surface radius of first cambered surface and the cambered surface radius of third cambered surface.
In the above technical scheme, the radius of the arc surface of the second arc surface is 3.5mm, and the radii of the arc surfaces of the first arc surface and the third arc surface are both 0.4 mm.
In the above technical scheme, the second arc surface and the third arc surface are respectively connected with a connecting surface connected with the plane where the dispensing slot is located.
In the above technical scheme, the diffusion sticking cloth is fixed on the display area of the light guide plate by gluing.
In the above technical scheme, the shading patch comprises a first shading patch and a second shading patch, the first shading patch is attached to the edge of the diffusion patch, and the second shading patch is located in the non-display area of the light guide plate and attached to the surface of the light guide plate and the surface of the LED lamp bead.
In the above technical solution, the second light-shielding patch is trapezoidal in shape.
In the above technical scheme, the edge of the light guide plate is integrally formed with supporting legs and barbs.
The LED backlight source has the advantages that the structure is reasonable, the design is novel, the practicability is high, light rays of the LED lamp beads can be fully diffused through the arc-shaped light incoming surface, the optical taste of the backlight source is improved, the light source is the bracket type LED and is fixed in the fixing groove of the light guide plate through the dispensing process, the stable light source is provided for the light guide plate, the production process of the backlight source is simplified, the PCB and reflow soldering process are avoided, welding is not needed, the reliability of the backlight source structure is improved, the structure is stable, the production yield of the backlight source is improved, and the production cost is reduced.
Drawings
Fig. 1 is an exploded view of the present invention.
Fig. 2 is a schematic plan view of a light guide plate.
Fig. 3 is an enlarged schematic view of a portion a of fig. 2.
In the figure: 11. a first light-shielding patch; 12. a second light-shielding patch; 2. diffusion sticking cloth; 3. a light guide plate; 31. a non-display area; 32. supporting legs; 33. a display area; 34. a barb; 4. reflecting adhesive tape; 5. LED lamp beads; 6. fixing grooves; 61. a first arc surface; 62. a second arc surface; 63. a third cambered surface; 64. a connecting surface; 65. and (4) dispensing a glue groove.
Detailed Description
Embodiments of the present invention will be described with reference to the accompanying drawings.
As shown in fig. 1-3, a support LED backlight source includes a light-shielding patch, a diffusion patch 2, a light guide plate 3, and a reflective patch 4, which are sequentially disposed from top to bottom, the light guide plate 3 is provided with a display area 33 and a non-display area 31, a fixing groove 6 for fixing an LED lamp bead 5 is formed in the non-display area 31, an arc light incident surface is concavely disposed on an inner wall of the fixing groove 6 toward the display area 33, and the light incident surface is located in front of the light emitted from the LED lamp bead 5.
A dispensing groove 65 is formed in the inner wall of the fixing groove 6, and glue for fixedly gluing the outer wall of the LED lamp bead 5 and the inner wall of the fixing groove 6 is filled in the dispensing groove 65.
The dispensing grooves 65 are provided along the thickness direction of the light guide plate 3. Glue can permeate into the groove bottom of the fixing groove 6 along the glue dispensing groove 65, so that the LED lamp beads 5 are more stable in adhesion.
The light incident surface comprises a first cambered surface 61, a second cambered surface 62 and a third cambered surface 63 which are connected in sequence, the first cambered surface 61 and the third cambered surface 63 are symmetrically arranged on two sides of the second cambered surface 62, and the cambered surface radius of the second cambered surface 62 is larger than that of the first cambered surface 61 and that of the third cambered surface 63. The light rays of the LED lamp beads 5 are fully diffused to the display area 33 of the light guide plate 3 through the light incoming surface.
The cambered surface radius of the second cambered surface 62 is 3.5mm, and the cambered surface radii of the first cambered surface 61 and the third cambered surface 63 are both 0.4 mm. The light of the LED lamp bead 5 is further diffused towards the edge direction of the light guide plate 3 through the first cambered surface 61 and the third cambered surface 63.
The second arc surface 62 and the third arc surface 63 are respectively connected with a connecting surface 64 connected with the plane of the dispensing slot 65. The connecting surface 64 and the light incident surface form a structure similar to a horn-shaped light diffusion, so that the light diffusion of the LED lamp beads 5 is more uniform.
The diffusion sticker 2 is adhesively fixed to the display area 33 of the light guide plate 3.
The shading sticking cloth comprises a first shading sticking cloth 11 and a second shading sticking cloth 12, the first shading sticking cloth 11 is stuck at the edge of the diffusion sticking cloth 2, and the second shading sticking cloth 12 is positioned in the non-display area 31 of the light guide plate 3 and stuck on the surfaces of the light guide plate 3 and the LED lamp beads 5.
The second light-shielding patch 12 has a trapezoidal shape. The edge of the light guide plate 3 is integrally formed with support legs 32 and barbs 34. The backlight source is conveniently arranged on the display equipment.
The LED backlight source is reasonable in structure, novel in design and strong in practicability, light rays of the LED lamp beads 5 can be fully diffused through the arc-shaped light incoming surface, the optical quality of the backlight source is improved, the light source is a bracket type LED and is fixed in the fixing groove 6 of the light guide plate 3 through a dispensing process, a stable light source is provided for the light guide plate 3, the production process of the backlight source is simplified, the adoption of a PCB (printed circuit board) and a reflow soldering process is avoided, welding is not needed, the reliability of the structure of the backlight source is improved, the structure is stable, the production yield of the backlight source is improved.
The technical scope of the present invention is not limited to the above embodiments, and any modifications, equivalent variations and modifications made to the above embodiments according to the technical spirit of the present invention still fall within the technical scope of the present invention.
Claims (10)
1. The utility model provides a support LED backlight which characterized in that, includes shading subsides cloth, diffusion subsides cloth, light guide plate, the reflection cloth that sets gradually from the top down, the light guide plate is provided with display area and non-display area, and it has the fixed slot of fixed LED lamp pearl to open at non-display area, the concave arc income plain noodles that is equipped with toward the display area direction of fixed slot inner wall, should go into the plain noodles and be located the place ahead that LED lamp pearl sent light.
2. The LED backlight source of claim 1, wherein the inner wall of the fixing groove is formed with a dispensing groove, and the dispensing groove is filled with glue for adhering and fixing the outer wall of the LED bead to the inner wall of the fixing groove.
3. The LED backlight of claim 2, wherein the dispensing grooves are arranged along the thickness direction of the light guide plate.
4. The LED backlight source of claim 3, wherein the light incident surface comprises a first arc surface, a second arc surface and a third arc surface which are sequentially connected, the first arc surface and the third arc surface are symmetrically arranged on two sides of the second arc surface, and the radius of the second arc surface is larger than that of the first arc surface and that of the third arc surface.
5. The bracket LED backlight source of claim 4, wherein the radius of the arc surface of the second arc surface is 3.5mm, and the radius of the arc surface of the first arc surface and the radius of the arc surface of the third arc surface are both 0.4 mm.
6. The LED backlight source of claim 5, wherein the second arc surface and the third arc surface are respectively connected with a connecting surface connected with a plane where the dispensing slot is located.
7. The supported LED backlight of claim 6, wherein the diffusion sticker is adhesively secured to the display area of the light guide plate.
8. The LED backlight source of claim 7, wherein the light-shielding patches comprise a first light-shielding patch and a second light-shielding patch, the first light-shielding patch is attached to the edge of the diffusion patch, and the second light-shielding patch is located in the non-display area of the light guide plate and attached to the surface of the light guide plate and the LED lamp beads.
9. The supported LED backlight of claim 8, wherein the second light blocking patch is trapezoidal in shape.
10. The supported LED backlight of claim 9, wherein the support legs and the barbs are integrally formed on the edge of the light guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010039752.4A CN111007683A (en) | 2020-01-15 | 2020-01-15 | Support LED backlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010039752.4A CN111007683A (en) | 2020-01-15 | 2020-01-15 | Support LED backlight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111007683A true CN111007683A (en) | 2020-04-14 |
Family
ID=70120707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010039752.4A Pending CN111007683A (en) | 2020-01-15 | 2020-01-15 | Support LED backlight |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111007683A (en) |
-
2020
- 2020-01-15 CN CN202010039752.4A patent/CN111007683A/en active Pending
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