CN110308584A - A kind of ultra-thin babysbreath backlight approach - Google Patents
A kind of ultra-thin babysbreath backlight approach Download PDFInfo
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- CN110308584A CN110308584A CN201910435659.2A CN201910435659A CN110308584A CN 110308584 A CN110308584 A CN 110308584A CN 201910435659 A CN201910435659 A CN 201910435659A CN 110308584 A CN110308584 A CN 110308584A
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- pcb board
- mounting base
- led
- threaded rod
- servo motor
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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
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
- H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
- H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
- H05K3/341—Surface mounted components
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Nonlinear Science (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (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 a kind of ultra-thin babysbreath backlight approaches, this method specific steps are as follows: step 1: schematic diagram draw, determine pcb board specification, then the spacing between the quantity and LED of the LED being mounted on pcb board is adjusted according to positioning requirements and is determined, while the schematic circuit on pcb board is drawn out according to the layout of LED；Step 2: it is made according to the complete route of pcb board of the pcb board schematic circuit in step 1, then pcb board is limited by the positioning mechanism of SMT machine and is fixed, then starts SMT machine for several LED and is mounted on pcb board corresponding position；The present invention cancels optical lens, reduces optical lens design link and collocation link, and can effectively reduce the thickness of backlight module, realizes ultrathin display；By the electric current and voltage of driving circuit independent control lamp bead, the brightness of diaphragm above single or multiple lamp beads is controlled, local dimming truly is realized with this, achieve the effect that the brightness and contrast for increasing display and saves electric energy.
Description
Technical field
The present invention relates to LED backlight innovation area, specially a kind of ultra-thin babysbreath backlight approach.
Background technique
With the improvement of people's living standards, masses are to the picture with display equipment and require higher and higher.Existing mainstream
LED backlight scheme is divided into straight-down negative and side-light type, and direct-light-type backlight is mounted on the underface of liquid crystal display panel, by lens by lamp
The light of pearl carries out secondary diffusion, then luminous uniformity is realized by diffuser plate and diaphragm, the chamber of direct-light-type backlight scheme
For body thickness in 10mm or more, cavity thickness are thinner, for for showing that the flatness requirement of backboard is higher.
Number of patent application is a kind of (CN108692206) production technology of direct-type backlight LED light bar, cannot achieve area
Domain dims and achievees the effect that the brightness and contrast for increasing display and save electric energy.
1, due to the limitation of currently manufactured horizontal, cost and lens design, it is easy to appear flatness not to reach for display backboard
Mark, leads to show phenomena such as image light and shade is uneven, and the lamp bead negligible amounts that traditional direct-type backlight uses, lamp bead and lamp bead it
Between spacing it is excessive, the region independent control effect using single-point or multiple spot is not satisfactory.Side-light backlight is mounted on liquid crystal
Light is scattered to liquid crystal display panel by light guide plate by the side of panel, cannot achieve the region independent control of single-point or multiple spot；2,
Existing market is very high for small spacing backlighting scheme attention rate, but mini LED and micro LED scheme is for backlight lamp bar factory
The equipment requirement of family is high, and traditional SMT equipment is not able to satisfy its production, producer need to spend it is huge purchase production equipment again,
It is a huge expenditure for middle-size and small-size producer.
Summary of the invention
The purpose of the present invention is to provide a kind of ultra-thin babysbreath backlight approaches, in order to overcome above-mentioned technical problem, according to
According to the spacing between LED support or chip itself light emitting angle and LED, under conditions of cooperating relevant backlight mould group membrane material,
Reach backlight module light-emitting surface any two points brightness under different-thickness to approach, the uniform method of light-emitting surface overall brightness passes through drive
The electric current and voltage of dynamic circuit independent control lamp bead, control the brightness of diaphragm above single or multiple lamp beads, true to realize with this
Local dimming in positive meaning achievees the effect that the brightness and contrast for increasing display and saves electric energy.
The purpose of the present invention can be achieved through the following technical solutions:
A kind of ultra-thin babysbreath backlight approach, this method specific steps are as follows:
Step 1: schematic diagram is drawn, and determines pcb board specification, then the quantity to the LED being mounted on pcb board and LED it
Between spacing adjusted and determine according to positioning requirements, while the schematic circuit on pcb board is drawn out according to the layout of LED；
Step 2: according to the pcb board schematic circuit in step 1 complete pcb board route make, then pass through
Pcb board is placed into the locating slot between the first mounting base and the second mounting base on pedestal by the positioning mechanism of SMT machine, passes through
One servo motor work by transmission case transmission drive two sides the first threaded rod rotates backward at the same speed, control the first mounting base with
Second mounting base outwardly or inwardly moves simultaneously, limits to pcb board of different size, then passes through the second servo motor work
Make to drive the rotation of the second threaded rod, positioning plate driven to move on the second threaded rod along sliding slot, to the pcb board of different length into
Row limit works in coordination and completes the limit of pcb board and fix, and then starts SMT machine several LED are mounted on pcb board and correspond to position
It sets.
As a further solution of the present invention: the LED is one of adopting surface mounted LED lamp bead or CSP, and patch type
The LED chip contained in LED lamp bead is one of vertical wafer or formal dress chip.
As a further solution of the present invention: the positioning mechanism of the SMT machine is in use, be placed into for pcb board first
In locating slot between one mounting base and the second mounting base, it is driven by first servo motor work by transmission case and drives two sides
First threaded rod rotates backward at the same speed, wherein first mounting base one end is threadedly coupled with the first threaded rod of side, the other side first
Threaded rod is through the first mounting base other end and does not interfere, and second mounting base one end is threadedly coupled with the first threaded rod of the other side,
The first threaded rod of side is through the second mounting base other end and does not interfere, and controls the first mounting base and the second mounting base simultaneously in cunning
It is outwardly or inwardly moved on rail, pcb board of different size is limited, then drive second by the work of the second servo motor
Threaded rod rotation, drives positioning plate to move on the second threaded rod along sliding slot, limits to the pcb board of different length, mutually
The limit for matching completion pcb board is fixed.
As a further solution of the present invention: the positioning mechanism includes pedestal, first servo motor, sliding rail, the first peace
Fill seat, the second mounting base, sliding slot, positioning plate, the second servo motor, the first threaded rod and the second threaded rod, the pedestal side
Transmission case is installed, and first servo motor is installed at the center of transmission case side, and transmission case other side both ends are mounted on
First threaded rod, the pedestal two sides are symmetrically arranged with sliding rail, the first threaded rod described in both ends penetrate through the first mounting base and
Second mounting base both ends, and the first mounting base and the second mounting base both ends bottom are coupled with sliding rail, first mounting base
Locating slot is offered with the second mounting base top side, and offers sliding slot on the inside of locating slot, is equipped with inside the sliding slot
Positioning plate, first mounting base and the second mounting base top side are mounted on the second servo motor, the second servo electricity
Machine output end is mounted on the second threaded rod, and the second threaded rod of the first mounting base and the second mounting base top side penetrates through together
The positioning plate top of side.
Beneficial effects of the present invention: the present invention is designed by reasonable structure, cancels optical lens, is reduced optical lens and is set
Link and collocation link are counted, and the thickness of backlight module can be effectively reduced, cavity thickness can realize ultra-thin display down to 5-10mm
Device；By the electric current and voltage of driving circuit independent control lamp bead, the brightness of diaphragm above single or multiple lamp beads is controlled, with this
Realizing local dimming truly, achieving the effect that the brightness and contrast for increasing display and saving electric energy；From life
Produce angle from the point of view of, compare for mini LED and micro LED, the present invention is relatively low for equipment requirement, traditional SMD and
Volume production can be completed in SMT equipment, and mini LED and micro LED, since LED is too small, are difficult to carry out in terms of maintenance at present
Maintenance；From cost, mini LED and micro LED are very high to the requirement of the PAD precision of pcb board, material and manufacturing process,
So price can be very high, the pcb board that the present invention is used using conventional backlit lamp bar, in cost advantageously；
The positioning mechanism of SMT machine is worked by first servo motor is driven the first threaded rod for driving two sides by transmission case
It rotates backward at the same speed, controls the first mounting base and the second mounting base outwardly or inwardly moves on the slide rail simultaneously, to of different size
Pcb board limited, then by the second servo motor work drive the second threaded rod rotation, drive positioning plate in the second spiral shell
It is moved on rasp bar along sliding slot, the pcb board of different length is limited, worked in coordination and complete the limit of pcb board and fix, be convenient for
Various sizes of pcb board is limited in the actual production process, while guaranteeing the accuracy of positioning, improves the qualification of product
Rate.
Detailed description of the invention
In order to facilitate the understanding of those skilled in the art, the present invention will be further described below with reference to the drawings.
Fig. 1 is pcb board structural schematic diagram of the present invention；
Fig. 2 is positioning mechanism structural schematic diagram of the present invention.
In figure: 1, pcb board；2,LED；3, pedestal；4, first servo motor；5, sliding rail；6, the first mounting base；7, the second peace
Fill seat；8, sliding slot；9, positioning plate；10, the second servo motor；11, the first threaded rod；12, the second threaded rod.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with embodiment, it is clear that described reality
Applying example is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is general
Logical technical staff all other embodiment obtained without creative efforts belongs to what the present invention protected
Range.
Please refer to shown in Fig. 1-2, a kind of ultra-thin babysbreath backlight approach, this method specific steps are as follows:
Step 1: schematic diagram draw, determine 1 specification of pcb board, then the quantity to the LED2 being mounted on pcb board 1 and
Spacing between LED2 is adjusted according to positioning requirements to be determined, while the original of the route on pcb board 1 is drawn out according to the layout of LED2
Reason figure；
Step 2: according to 1 schematic circuit of pcb board in step 1 complete pcb board 1 route make, then lead to
It crosses in the locating slot between the first mounting base 6 and the second mounting base 7 that pcb board 1 is placed on pedestal 3 by the positioning mechanism of SMT machine,
It drives the first threaded rod 11 of two sides to rotate backward at the same speed by transmission case transmission by the work of first servo motor 4, controls the
One mounting base 6 and the second mounting base 7 outwardly or inwardly move simultaneously, limit to pcb board 1 of different size, then pass through
The work of second servo motor 10 drives the rotation of the second threaded rod 12, and positioning plate 9 is driven to move on the second threaded rod 12 along sliding slot 8
It is dynamic, the pcb board 1 of different length is limited, works in coordination and completes the limit of pcb board 1 and fix, if then starting SMT machine will
A dry LED2 is mounted on 1 corresponding position of pcb board, while can be added according to different design requirements in 1 front or back of pcb board
The components such as IC.
LED2 is one of adopting surface mounted LED lamp bead or CSP, and the LED chip that adopting surface mounted LED lamp bead includes is vertical
One of chip or formal dress chip.
Pcb board 1 in use, be placed between the first mounting base 6 and the second mounting base 7 by the positioning mechanism of SMT machine first
In locating slot, it is driven by the work of first servo motor 4 by transmission case and drives the first threaded rod 11 of two sides is reversed at the same speed to turn
Dynamic, wherein 6 one end of the first mounting base is threadedly coupled with the first threaded rod of side 11, the first threaded rod of the other side 11 is through the first peace
It fills 6 other end of seat and does not interfere, 7 one end of the second mounting base is threadedly coupled with the first threaded rod of the other side 11, the first screw thread of side
Bar 11 through 7 other end of the second mounting base and not interfering, control the first mounting base 6 and the second mounting base 7 simultaneously on sliding rail 5 to
It is interior or move out, pcb board 1 of different size is limited, the second spiral shell is then driven by the work of the second servo motor 10
Rasp bar 12 rotates, and drives positioning plate 9 to move on the second threaded rod 12 along sliding slot 8, limits the pcb board 1 of different length
Position works in coordination and completes the limit of pcb board 1 and fix.
Positioning mechanism include pedestal 3, first servo motor 4, sliding rail 5, the first mounting base 6, the second mounting base 7, sliding slot 8,
Positioning plate 9, the second servo motor 10, the first threaded rod 11 and the second threaded rod 12,3 side of pedestal is equipped with transmission case, and passes
First servo motor 4 is installed at dynamic case side center, and transmission case other side both ends are mounted on the first threaded rod 11, pedestal
3 two sides are symmetrically arranged with sliding rail 5, and the first threaded rod of both ends 11 penetrates through 7 both ends of the first mounting base 6 and the second mounting base, and
First mounting base 6 and 7 both ends bottom of the second mounting base are coupled with sliding rail 5,7 top of the first mounting base 6 and the second mounting base
Side offers locating slot, and offers sliding slot 8 on the inside of locating slot, and positioning plate 9, the first mounting base 6 are equipped with inside sliding slot 8
It is mounted on the second servo motor 10 with 7 top side of the second mounting base, 10 output end of the second servo motor is mounted on second
Threaded rod 12, and the second threaded rod 12 of 7 top side of the first mounting base 6 and the second mounting base penetrates through ipsilateral positioning plate 9 and pushes up
End.
The present invention is designed by reasonable structure, cancels optical lens, reduces optical lens design link and collocation link,
And the thickness of backlight module can be effectively reduced, cavity thickness can realize ultrathin display down to 5-10mm；It is only by driving circuit
The electric current and voltage of vertical control lamp bead, control the brightness of diaphragm above single or multiple lamp beads, is realized truly with this
Local dimming, achieve the effect that increase display brightness and contrast and save electric energy；From the point of view of producing angle, compare
For miniLED2 and microLED2, the present invention is relatively low for equipment requirement, traditional SMD and SMT equipment amount of can be completed
It produces, and miniLED2 and microLED2, since LED2 is too small, is difficult to repair in terms of maintenance at present；Come from cost
It sees, miniLED2 and microLED2 are very high to the requirement of the PAD precision of pcb board 1, material and manufacturing process, so price can be very
Height, the pcb board 1 that the present invention is used using conventional backlit lamp bar, in cost advantageously；
The positioning mechanism of SMT machine is worked by first servo motor 4 is driven the first screw thread for driving two sides by transmission case
Bar 11 rotates backward at the same speed, controls the first mounting base 6 and the second mounting base 7 outwardly or inwardly moves on sliding rail 5 simultaneously, to width
It spends different pcb boards 1 to be limited, the rotation of the second threaded rod 12 is then driven by the work of the second servo motor 10, it is fixed to drive
Position plate 9 moves on the second threaded rod 12 along sliding slot 8, limits to the pcb board 1 of different length, works in coordination and complete PCB
The limit of plate 1 is fixed, and convenient for limiting in the actual production process to various sizes of pcb board 1, while guaranteeing the essence of positioning
True property, improves the qualification rate of product.
Present invention disclosed above preferred embodiment is only intended to help to illustrate the present invention.There is no detailed for preferred embodiment
All details are described, are not limited the invention to the specific embodiments described.Obviously, according to the content of this specification,
It can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to better explain the present invention
Principle and practical application, so that skilled artisan be enable to better understand and utilize the present invention.The present invention is only
It is limited by claims and its full scope and equivalent.
Claims (3)
1. a kind of ultra-thin babysbreath backlight approach, which is characterized in that this method specific steps are as follows:
Step 1: schematic diagram draw, determine pcb board (1) specification, then the quantity to the LED (2) being mounted on pcb board (1) and
Spacing between LED (2) is adjusted according to positioning requirements to be determined, while being drawn out on pcb board (1) according to the layout of LED (2)
Schematic circuit；
Step 2: according to pcb board (1) schematic circuit in step 1 complete pcb board (1) route make, then lead to
Pcb board (1) is placed between the first mounting base (6) on pedestal (3) and the second mounting base (7) by the positioning mechanism for crossing SMT machine
In locating slot, it is driven by first servo motor (4) work by transmission case and drives the first threaded rod (11) of two sides synchronized anti-
To rotation, controls the first mounting base (6) and the second mounting base (7) outwardly or inwardly moves simultaneously, to pcb board of different size
(1) it is limited, the second threaded rod (12) rotation is then driven by the second servo motor (10) work, is driven positioning plate (9)
It is mobile along sliding slot (8) on the second threaded rod (12), the pcb board (1) of different length is limited, completion of working in coordination
The limit of pcb board (1) is fixed, and is then started SMT machine for several LED (2) and is mounted on pcb board (1) corresponding position.
2. a kind of ultra-thin babysbreath backlight approach according to claim 1, which is characterized in that the LED (2) is patch type
One of LED lamp bead or CSP, and the LED chip that adopting surface mounted LED lamp bead includes is one in vertical wafer or formal dress chip
Kind.
3. a kind of ultra-thin babysbreath backlight approach according to claim 1, which is characterized in that the localization machine of the SMT machine
Structure passes through in use, pcb board (1) is placed into the locating slot between the first mounting base (6) and the second mounting base (7) first
One servo motor (4) work is driven by transmission case drives the first threaded rod (11) of two sides to rotate backward at the same speed, wherein first
Mounting base (6) one end is threadedly coupled with the first threaded rod of side (11), and the first threaded rod of the other side (11) runs through the first mounting base
(6) other end and do not interfere, the second mounting base (7) one end is threadedly coupled with the first threaded rod of the other side (11), the first spiral shell of side
Rasp bar (11) is through the second mounting base (7) other end and does not interfere, and controls the first mounting base (6) and the second mounting base (7) simultaneously
It is outwardly or inwardly moved on sliding rail (5), pcb board (1) of different size is limited, then pass through the second servo motor
(10) work drives the second threaded rod (12) rotation, and positioning plate (9) is driven to move on the second threaded rod (12) along sliding slot (8)
It is dynamic, the pcb board (1) of different length is limited, is worked in coordination and is completed the limit of pcb board (1) and fix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910435659.2A CN110308584B (en) | 2019-05-23 | 2019-05-23 | Ultrathin starry backlight method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910435659.2A CN110308584B (en) | 2019-05-23 | 2019-05-23 | Ultrathin starry backlight method |
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| CN110308584A true CN110308584A (en) | 2019-10-08 |
| CN110308584B CN110308584B (en) | 2022-04-19 |
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| Publication number | Publication date |
|---|---|
| CN110308584B (en) | 2022-04-19 |
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