CN114578620A - LED backlight module with bottom light emitting function - Google Patents
LED backlight module with bottom light emitting function Download PDFInfo
- Publication number
- CN114578620A CN114578620A CN202210350888.6A CN202210350888A CN114578620A CN 114578620 A CN114578620 A CN 114578620A CN 202210350888 A CN202210350888 A CN 202210350888A CN 114578620 A CN114578620 A CN 114578620A
- Authority
- CN
- China
- Prior art keywords
- light
- film
- light source
- backlight module
- integrated circuit
- 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
Links
- 239000011324 bead Substances 0.000 claims abstract description 27
- 230000003287 optical effect Effects 0.000 claims abstract description 9
- 238000009792 diffusion process Methods 0.000 claims description 21
- 238000000576 coating method Methods 0.000 claims description 5
- 239000011248 coating agent Substances 0.000 claims description 4
- 229920002799 BoPET Polymers 0.000 claims description 3
- 239000010408 film Substances 0.000 description 75
- 230000000694 effects Effects 0.000 description 12
- 239000012528 membrane Substances 0.000 description 10
- 230000009471 action Effects 0.000 description 7
- 239000012788 optical film Substances 0.000 description 7
- 238000009833 condensation Methods 0.000 description 6
- 230000005494 condensation Effects 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000000007 visual effect Effects 0.000 description 4
- 239000003292 glue Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Images
Classifications
-
- 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
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
-
- 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
- G02F1/133602—Direct backlight
- G02F1/133605—Direct backlight including specially adapted reflectors
-
- 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
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
Landscapes
- 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 discloses an LED backlight module with a bottom light emitting function, which comprises an integrated circuit soft board, a light source assembly and an optical diaphragm assembly, wherein the light source assembly is connected with the optical diaphragm assembly, the light source assembly comprises LED lamp beads arranged on the integrated circuit soft board, a reflecting film is arranged between the integrated circuit soft board and the light source assembly, and the optical diaphragm assembly comprises a first light splitting film and a second light splitting film which are sequentially connected.
Description
Technical Field
The invention relates to the technical field of display, in particular to an LED backlight module with a bottom light emitting function.
Background
The LED lamp bead is an electroluminescent semiconductor material chip, is solidified on the bracket by silver glue or white glue, then connecting the chip and the circuit board by silver wires or gold wires, sealing the periphery by epoxy resin to protect the internal core wires, finally installing the shell, therefore, the LED lamp has good shock resistance, the backlight module is one of the key components of the liquid crystal display panel, the function is to supply sufficient light sources with uniform brightness and distribution so as to normally display images, the service life of the LED backlight source exceeds 5000 hours, and using a direct current voltage, the LED backlight and the CCFL backlight are substantially identical in structure, the main difference is that the CCFL is a linear light source, and the LED is first made into a LED light bead strip and then put into the backlight when in use, with the continuous development of LED technology, the market share of LED backlight sources is rapidly expanding, and the lcd using fluorescent tubes as light sources is gradually replaced by LED lcds.
There is certain drawback in the backlight unit of current LED lamp pearl when the installation is used, and current mounting means includes three kinds: the first installation mode is side light incidence, the second is bottom light emission, and the third is a mini LED technology, wherein the bottom light emission needs a lens, and has no advantage in thickness; the mini LED can only replace the whole panel under the condition that the lamp bead is damaged, so that the maintenance cost is high; backlight unit is when the installation lamp source, directly welds the lamp pearl on the surface of lamp strip usually, in case the lamp pearl damages, just seems especially troublesome with its work of dismantling the change, and the uniformity is not good and cost of maintenance is high.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the LED backlight module with the bottom light emitting function, which is convenient to disassemble and maintain and can reduce the maintenance cost.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a bottom luminous LED backlight unit, includes integrated circuit soft board, light source subassembly, optical film group, be connected with optical film group on the light source subassembly, the light source subassembly is including installing the LED lamp pearl on the integrated circuit soft board, be provided with the reflectance coating between integrated circuit soft board and the light source subassembly, optical film group is including the first beam splitter membrane, the second beam splitter membrane that connect gradually.
Furthermore, the optical diaphragm group also comprises a diffusion film, an upper brightness enhancement film and a lower brightness enhancement film, wherein the diffusion film is arranged between the second light splitting film and the lower brightness enhancement film, and the upper brightness enhancement film is connected with the lower brightness enhancement film.
Furthermore, the upper brightness enhancement film is also connected with a light condensation film, and the light condensation film is a PET film.
Furthermore, the thickness of the integrated circuit soft board is 0.1-0.6 mm.
Further, the first light splitting film performs transverse light splitting on the light source, the second light splitting film performs longitudinal light splitting on the light source, and the light source of the first light splitting film is perpendicular to the light source of the second light splitting film.
Furthermore, the thickness of the diffusion film is 0.1-0.3 mm.
Further, the distance between the LED lamp beads is 1.5-3 mm, and the size of the LED lamp beads is 0.25-0.6 mm.
Furthermore, the thickness of the reflecting film is 0.2-0.6 mm.
Furthermore, a plurality of connecting holes are formed in the integrated circuit soft board, the connecting holes are in a group of four, and the distance between the connecting holes is 1.5 mm.
Furthermore, an IC chip is arranged behind the integrated circuit soft board and connected with the LED lamp beads, and the IC chip drives the LED lamp beads which are connected in series and in parallel.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the invention can improve the difference of light and shade, obtain the effect of the uniform picture effect after applying to the display screen, if any one LED lamp bead on the integrated circuit soft board is damaged, can change, the maintenance cost is low, different from the traditional backlight module, the invention does not need lens, diffuser plate, light guide plate, and can improve the luminance, can also use under the condition of the small current voltage, can also play a very big role in the outdoor display screen, such as the watch, the face recognition screen, the advertising screen of the traffic light, etc., use the invention can reduce the manufacturing cost and the maintenance cost.
Drawings
FIG. 1 is a schematic structural view of a bottom-emitting LED backlight module;
FIG. 2 is a partially enlarged view of the integrated circuit flexible board;
the LED lamp comprises a light source component 1, an integrated circuit soft board 2, a reflecting film 3, a first light splitting film 4, a second light splitting film 5, a diffusion film 6, a lower brightness enhancement film 7, an upper brightness enhancement film 8, a light condensation film 9, an LED lamp bead 10 and a connecting hole 11.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that the terms "comprises," "comprising," and "has" and any variations thereof in the description and claims of the invention and in the above-described drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus. In the claims, the description and the drawings of the present application, relational terms such as "first" and "second", and the like, may be used solely to distinguish one entity/action/object from another entity/action/object without necessarily requiring or implying any actual such relationship or order between such entities/actions/objects.
As shown in FIG. 1, a bottom-emitting LED backlight module comprises an integrated circuit soft board 2, a light source assembly 1, an optical film assembly, the optical film assembly is connected on the light source assembly 1, the light source assembly 1 comprises LED lamp beads 10 installed on the integrated circuit soft board, a reflective film 3 is arranged between the integrated circuit soft board 2 and the light source assembly 1, the reflective film 3 can increase reflectivity and resist high temperature, and can solve the problem of unevenness of the LED lamp beads 10 installed on the integrated circuit soft board 2, the optical film assembly comprises a first light splitting film 4 and a second light splitting film 5 which are sequentially connected, the first light splitting film 4 and the second light splitting film 5 are not limited to two layers, can be multilayer light splitting films according to actual requirements, improve the utilization rate of light, enhance brightness, in addition, the first light splitting film 4 and the second light splitting film 5 are light homogenizing films, and can realize uniform light mixing and shorten the optical light mixing distance, excellent shielding property is realized and the loss of brightness of the backlight is reduced.
The optical film group also comprises a diffusion film 6, an upper brightness enhancement film 8 and a lower brightness enhancement film 7, wherein the diffusion film 6 is arranged between the second light splitting film 5 and the lower brightness enhancement film 7, the upper brightness enhancement film 8 is connected with the lower brightness enhancement film 7, the diffusion film 6 is arranged on a PET substrate, and optical glue is cured into a pre-designed optical structure diffusion coating through a precision coating method, so that light penetrates through the diffusion coating to generate diffusion, the light distribution is uniform, a point light source or a line light source is uniformly converted into a surface light source, the light penetration capability is high, the visual angle can be improved, the softness of the light source is increased, the optical efficiency is improved, and the functions of diffusing and protecting the brightness enhancement film are achieved.
The upper brightness enhancement film 8 is also connected with a light condensation film 9, the light condensation film 9 is a PET film, the light condensation film 9 has the function of a wide visual angle, and the visual angle of 80 degrees is increased on the basis of the original visual angle of 30 degrees.
The thickness of the integrated circuit soft board 2 is 0.1-0.6 mm, the thickness of the diffusion film 6 is 0.1-0.3 mm, the thickness of the reflection film 3 is 0.2-0.6 mm, preferably, the thickness of the integrated circuit soft board 2 is 0.1mm, the thickness of the diffusion film 6 is 0.6mm, and the thickness of the reflection film 3 is 0.35, the displayed picture effect is best.
First membrane 4 that divides light carries out horizontal beam split to the light source, and second membrane 5 that divides light carries out vertical beam split to the light source, and the light source mutually perpendicular of 4 minutes of first membrane and 5 minutes of second membrane, first membrane 4 and second membrane 5 that divide light let the light source more even, improve the utilization ratio of light.
In the embodiment of this application, the distance between LED lamp pearl 10 is 1.5 ~ 3mm, and LED lamp pearl 10 size is 0.25 ~ 0.6mm, and the condition of the size according to actual need luminance of LED lamp pearl 10 is selected, and the distance between LED lamp pearl 10 is along with the maturity of first beam splitting membrane, second beam splitting membrane technique, the distance between LED lamp pearl 10.
As shown in fig. 2, a plurality of connecting holes 11 are formed in the integrated circuit soft board 2, the connecting holes 11 are divided into four groups, the distance between the connecting holes 11 is 1.5mm, and when the LED lamp beads 10 break down, the connecting holes 11 can be arranged to maintain the broken-down LED lamp beads 10 without replacing the whole light source assembly 1.
An IC chip (not shown in the figure) is arranged behind the integrated circuit soft board 2 and connected with the LED lamp beads 10, the IC chip drives the LED lamp beads 10 which are connected in a plurality of strings, only two to three lines are needed for driving the LED lamp beads 10 by adopting the IC chip, the circuit is simple, and the cost is saved.
In the embodiment of the application, the integrated circuit soft board 2 can be used as a circuit for carrying out multi-string and multi-parallel LED lamp beads 10, the method can omit an IC chip and also can achieve the same driving effect, the integrated circuit soft board 2 is divided into regions, and one circuit controls the on-off of one region of the LED lamp beads 10.
The invention can be applied to a tablet personal computer, a commercial display screen, a competitive power display screen, a notebook computer and the like, and particularly, in the application of a vehicle-mounted display screen, the content in the display screen can be clearly seen even under the condition of strong sunlight.
Example one
When the thickness of the integrated circuit soft board 2 is 0.1mm, the thickness of the diffusion film 6 is 0.3mm, and the thickness of the reflection film 3 is 0.35mm, the effect of the invention is best, the brightness is improved by 30-40%, the IC chip drives the LED lamp beads 10 which are in a plurality of strings and in parallel, the light source is subjected to the transverse and longitudinal light splitting action of the first light splitting film 4 and the second light splitting film 5, further, the reflection film 3 reflects the light source upwards to enhance the light, and the light source is subjected to the combined action of the diffusion film 6, the lower light adding sheet 7, the upper light adding sheet 8 and the light gathering film 9, so that the invention can achieve the effect of uniform picture effect in the application of a display screen, and provides enough brightness, when the invention is maintained, the whole light source component 1 does not need to be replaced, any single LED lamp bead 10 can be maintained, and the maintenance cost is greatly reduced.
Example two
When the thickness of the integrated circuit soft board 2 is 0.6mm, the thickness of the diffusion film 6 is 0.1mm, and the thickness of the reflection film 3 is 0.2mm, the IC chip drives the LED lamp beads 10 which are connected in series and in parallel, the light source is subjected to the transverse and longitudinal light splitting action of the first light splitting film 4 and the second light splitting film 5, further, the reflection film 3 reflects the light source upwards to enhance light, and the light source is subjected to the combined action of the diffusion film 6, the lower light enhancement film 7, the upper light enhancement film 8 and the light gathering film 9, so that the effect of uniform picture effect can be achieved in the application of the display screen.
EXAMPLE III
When the thickness of the integrated circuit soft board 2 is 0.3mm, the thickness of the diffusion film 6 is 0.15mm, and the thickness of the reflection film 3 is 0.6mm, a wiring circuit is arranged on the integrated circuit soft board 2, each line controls an area on the integrated circuit soft board 2 to drive the LED lamp bead 10, a light source is subjected to the transverse and longitudinal light splitting effects of the first light splitting film 4 and the second light splitting film 5, the light source is further reflected upwards by the reflection film 3 to increase light, and the light source is subjected to the combined effects of the diffusion film 6, the lower light adding sheet 7, the upper light adding sheet 8 and the light gathering film 9, so that the effects of uniform picture effect and brightness improvement can be achieved in the application of the display screen.
It should be understood that the above-described embodiments are merely preferred embodiments of the present invention and the technical principles applied thereto, and that any changes, modifications, substitutions, combinations and simplifications made by those skilled in the art without departing from the spirit and principle of the present invention shall be regarded as equivalent substitutions and shall be covered by the protection scope of the present invention.
Claims (10)
1. The utility model provides a luminous LED backlight unit in bottom which characterized in that: including integrated circuit soft board, light source subassembly, optics diaphragm group, be connected with optics diaphragm group on the light source subassembly, the light source subassembly is including installing the LED lamp pearl on the integrated circuit soft board, be provided with the reflectance coating between integrated circuit soft board and the light source subassembly, optics diaphragm group is including the first beam splitter, the second beam splitter that connect gradually.
2. The bottom-emitting LED backlight module of claim 1, wherein: the optical diaphragm group further comprises a diffusion film, an upper light adding sheet and a lower light adding sheet, wherein the diffusion film is arranged between the second light splitting film and the lower light adding sheet, and the upper light adding sheet is connected with the lower light adding sheet.
3. The bottom-emitting LED backlight module of claim 2, wherein: the upper brightness enhancement film is also connected with a light gathering film, and the light gathering film is a PET film.
4. The bottom-emitting LED backlight module of claim 3, wherein: the thickness of the integrated circuit soft board is 0.1-0.6 mm.
5. The bottom-emitting LED backlight module of claim 4, wherein: the first light splitting film performs transverse light splitting on the light source, the second light splitting film performs longitudinal light splitting on the light source, and the light source of the first light splitting film is perpendicular to the light source of the second light splitting film.
6. The bottom-emitting LED backlight module of claim 5, wherein: the thickness of the diffusion film is 0.1-0.3 mm.
7. The bottom-emitting LED backlight module of claim 6, wherein: the distance between the LED lamp beads is 1.5-3 mm, and the size of the LED lamp beads is 0.25-0.6 mm.
8. The bottom-emitting LED backlight module of claim 7, wherein: the thickness of the reflecting film is 0.2-0.6 mm.
9. The bottom-emitting LED backlight module of claim 8, wherein: the integrated circuit soft board is provided with a plurality of connecting holes, the connecting holes are in a group of four, and the distance between the connecting holes is 1.5 mm.
10. The bottom-emitting LED backlight module of claim 9, wherein: and an IC chip is arranged behind the integrated circuit soft board and connected with the LED lamp beads, and the IC chip drives the LED lamp beads in multiple strings and multiple parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210350888.6A CN114578620A (en) | 2022-04-02 | 2022-04-02 | LED backlight module with bottom light emitting function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210350888.6A CN114578620A (en) | 2022-04-02 | 2022-04-02 | LED backlight module with bottom light emitting function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114578620A true CN114578620A (en) | 2022-06-03 |
Family
ID=81777786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210350888.6A Pending CN114578620A (en) | 2022-04-02 | 2022-04-02 | LED backlight module with bottom light emitting function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114578620A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115407562A (en) * | 2022-09-26 | 2022-11-29 | 深圳市瀚达美电子有限公司 | Backlight source structure of vehicle-mounted TFT display screen |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200719034A (en) * | 2005-11-01 | 2007-05-16 | Radiant Opto Electronics Corp | LED backlight module |
| TW201007278A (en) * | 2008-08-06 | 2010-02-16 | Au Optronics Corp | Backlight module |
| CN202349661U (en) * | 2011-11-21 | 2012-07-25 | 重庆四联光电科技有限公司 | Light-emitting diode (LED) lamp module |
| CN203784712U (en) * | 2014-04-22 | 2014-08-20 | 刘外生 | Attached type LED lamp |
| CN203982726U (en) * | 2014-07-14 | 2014-12-03 | 陈炜荣 | Flexible LED shows module |
| CN207366897U (en) * | 2017-11-08 | 2018-05-15 | 昆山龙腾光电有限公司 | A kind of LED light bar, backlight module and display device |
| CN217157019U (en) * | 2022-04-02 | 2022-08-09 | 深圳市金光宝光电有限公司 | LED backlight module with bottom light emitting function |
-
2022
- 2022-04-02 CN CN202210350888.6A patent/CN114578620A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200719034A (en) * | 2005-11-01 | 2007-05-16 | Radiant Opto Electronics Corp | LED backlight module |
| TW201007278A (en) * | 2008-08-06 | 2010-02-16 | Au Optronics Corp | Backlight module |
| CN202349661U (en) * | 2011-11-21 | 2012-07-25 | 重庆四联光电科技有限公司 | Light-emitting diode (LED) lamp module |
| CN203784712U (en) * | 2014-04-22 | 2014-08-20 | 刘外生 | Attached type LED lamp |
| CN203982726U (en) * | 2014-07-14 | 2014-12-03 | 陈炜荣 | Flexible LED shows module |
| CN207366897U (en) * | 2017-11-08 | 2018-05-15 | 昆山龙腾光电有限公司 | A kind of LED light bar, backlight module and display device |
| CN217157019U (en) * | 2022-04-02 | 2022-08-09 | 深圳市金光宝光电有限公司 | LED backlight module with bottom light emitting function |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115407562A (en) * | 2022-09-26 | 2022-11-29 | 深圳市瀚达美电子有限公司 | Backlight source structure of vehicle-mounted TFT display screen |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2019200825A1 (en) | Direct-type backlight module and manufacturing method therefor | |
| CN103727467B (en) | Backlight module and the liquid crystal indicator with this backlight module | |
| CN108983497A (en) | Mini LED backlight and preparation method thereof and backlight source module | |
| US8814417B2 (en) | Backlight unit and display device using the same | |
| CN100435003C (en) | Backlight unit and liquid crystal device having the same | |
| CN206848653U (en) | A kind of backlight module and display device | |
| US20150085485A1 (en) | Light unit and illumination system using the same | |
| CN104964213B (en) | Backlight module and liquid crystal display | |
| TW200424695A (en) | Backlight module of LED | |
| CN1837925A (en) | Backlight apparatus and liquid crystal display apparatus | |
| CN214098031U (en) | Display device | |
| CN102086995B (en) | Backlight unit and liquid crystal display device having the same | |
| US7553061B2 (en) | Side type backlight module | |
| US8186842B2 (en) | Backlight module | |
| CN217157019U (en) | LED backlight module with bottom light emitting function | |
| CN114740652B (en) | Backlight module, display panel and display device | |
| CN114578620A (en) | LED backlight module with bottom light emitting function | |
| CN101303431A (en) | Light guide plate and method for manufacturing light guide plate | |
| CN110632790A (en) | Backlight module, preparation method thereof and display device thereof | |
| CN114859600A (en) | Display module and display device | |
| CN101509636A (en) | Light guide board combination and backlight module | |
| CN200944171Y (en) | Backlight module using LED reflective depression | |
| CN109521516B (en) | Backlight module and manufacturing method thereof | |
| CN102620218A (en) | Backlight module and liquid crystal display device | |
| CN105223734A (en) | A kind of backlight module for liquid crystal display |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |