CN108873485A - A kind of sliceable direct-light-type backlight - Google Patents

A kind of sliceable direct-light-type backlight Download PDF

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Publication number
CN108873485A
CN108873485A CN201811052534.3A CN201811052534A CN108873485A CN 108873485 A CN108873485 A CN 108873485A CN 201811052534 A CN201811052534 A CN 201811052534A CN 108873485 A CN108873485 A CN 108873485A
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CN
China
Prior art keywords
substrate
back light
electric current
incoming end
light unit
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
Application number
CN201811052534.3A
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Chinese (zh)
Inventor
李琪
周江华
李兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huizhou Long Li Technology Development Co Ltd
Original Assignee
Huizhou Long Li Technology Development Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Huizhou Long Li Technology Development Co Ltd filed Critical Huizhou Long Li Technology Development Co Ltd
Priority to CN201811052534.3A priority Critical patent/CN108873485A/en
Publication of CN108873485A publication Critical patent/CN108873485A/en
Pending legal-status Critical Current

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Classifications

    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133603Direct backlight with LEDs
    • GPHYSICS
    • G02OPTICS
    • G02FOPTICAL 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
    • G02F1/00Devices 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
    • G02F1/01Devices 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 
    • G02F1/13Devices 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
    • G02F1/133Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333Constructional arrangements; Manufacturing methods
    • G02F1/1335Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/1336Illuminating devices
    • G02F1/133602Direct backlight
    • G02F1/133612Electrical details

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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 present invention discloses a kind of sliceable direct-light-type backlight, including several back light units being spliced, each back light unit includes substrate, several pads, the electric current incoming end on substrate and the current output terminal on substrate set on substrate top surface, electric current incoming end is located at the edge in two different sidelines of substrate from current output terminal, the electric current incoming end of a upper back light unit and the current output terminal of next back light unit are linked together by welding or clamping, and LED is welded on pad.Backlight of the present invention compared to monoblock type, spliced backlight does not have to frequent design backing structure, the back light unit of several standard specifications need to only be designed, the direct-light-type backlight of all size can be produced by welding or being clamped back light unit, shorten research and development and production cycle, technology difficulty is reduced, research and development and production cost are reduced.And the splicing construction of this direct-light-type backlight is simple, so that splicing is more convenient, is relatively beneficial to process.

Description

A kind of sliceable direct-light-type backlight
Technical field
The present invention relates to field of liquid crystal display more particularly to a kind of sliceable direct-light-type backlights.
Background technique
Existing backlight is divided into side-light backlight and direct-light-type backlight.Side-light backlight applies the big ruler in When on very little LCD, light guide plate weight and cost can increase with the increase of size, and light emission luminance and uniformity are not to manage very much Think, and regional dynamics control can not achieve using the LCD TV of side-light backlight, can only realize simple one-dimensional light modulation. Comparatively, direct LED backlight performance is then relatively good, and the regional dynamics control of LCD TV may be implemented.Downward back Light source technique is relatively easy, does not need light guide plate, and light source (LED wafer array) and PCB are placed in backlight bottom, light from After LED is projected, light is equably projected by the reflector plate of bottom and the diffusion sheet on surface, brightness enhancement film.
The direct-type backlight of volume production is all made of integral structure at present, and now especially cell phone back light source variation very Fastly, but all variations again not too large, the usually slightly modification of size or structure.But backlight manufacturer just needs again Back light source structure is designed, related all components are required to change.In order to reduce workload, reduction design difficulty and production cost, The concept of splicing direct-light-type backlight is suggested, but is not suggested that and how to be spliced, and the mode and structure of splicing are without specific descriptions.
Therefore, the prior art is defective, needs to improve.
Summary of the invention
The purpose of the present invention is overcoming the deficiencies of the prior art and provide a kind of sliceable direct-light-type backlight, so that splicing The simpler convenience of structure.
Technical scheme is as follows:A kind of sliceable direct-light-type backlight is provided, including several back being spliced Light unit, each back light unit include substrate, set on several pads of substrate top surface, the electric current incoming end on substrate and Current output terminal on substrate, electric current incoming end are located at the side in two different sidelines of substrate from current output terminal Edge, the electric current incoming end of a upper back light unit and the current output terminal of next back light unit are connected to one by welding or clamping It rises, LED is welded on pad.
Further, the substrate is FPC, is rectangular tab, and the electric current incoming end and current output terminal are golden hand Refer to, electric current incoming end is set to substrate front side, and current output terminal is set to substrate back, and the electric current incoming end of a upper back light unit is under The current output terminal of one back light unit is by being welded together.
Further, the substrate is PCB, and opposite two sides are parallel inclined-plane, and electric current incoming end is located therein On one inclined-plane, current output terminal is set on another inclined-plane, and the electric current incoming end and current output terminal are golden finger, a upper backlight The current output terminal of the electric current incoming end of unit and next back light unit, which passes through, to be welded together.
Further, the substrate is PCB, and to be respectively arranged on substrate opposite two for the electric current incoming end and current output terminal Side, electric current incoming end are the metal contact piece of protrusion, and the current output terminal is the metal card slot to match with electric current incoming end, The metal contact piece of a upper back light unit is inserted into two back light units to be stitched together in the metal card slot of next back light unit, gold Belonging to is close-fitting between contact and metal card slot.
Further, the metal contact piece is warp architecture, and shape and warp architecture of the metal card slot match.
Further, the metal contact piece is equipped with several lines
Further, the spacing between two back light unit stitching portion adjacent LEDs is identical as the spacing of non-stitching portion.
Using the above scheme, the present invention is compared to the backlight of monoblock type, and spliced backlight is without frequent design backlight Structure need to only design the back light units of several standard specifications, by weld or be clamped back light unit can produce it is various big Small direct-light-type backlight shortens research and development and production cycle, reduces technology difficulty, reduces research and development and production cost.And this is straight The splicing construction of backlight is simple, so that splicing is more convenient, is relatively beneficial to process.
Detailed description of the invention
Fig. 1 is the front view of back light unit in the embodiment of the present invention one.
Fig. 2 is the dorsal view of back light unit in the embodiment of the present invention one.
Fig. 3 is the overall structure diagram of backlight in the embodiment of the present invention one.
Fig. 4 is the front view of back light unit in the embodiment of the present invention two.
Fig. 5 is the top view of back light unit in the embodiment of the present invention two.
Fig. 6 is the overall structure diagram of backlight in the embodiment of the present invention two.
Fig. 7 is the front view of back light unit in the embodiment of the present invention three.
Fig. 8 is the top view of back light unit in the embodiment of the present invention three.
Fig. 9 is the overall structure diagram of backlight in the embodiment of the present invention three.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment one
It please refers to Fig.1 to Fig.3, the present embodiment one provides a kind of sliceable direct-light-type backlight, including several is spliced Back light unit 1.Each back light unit 1 include substrate 11, set on several pads 12 of 11 top surface of substrate, on substrate 11 Electric current incoming end 13 and the current output terminal 14 on substrate 11, LED are welded on pad 12.
The substrate 11 is FPC, is rectangular tab, and electric current incoming end 13 and current output terminal 14 are located at substrate 11 Two different sidelines edge, in the present embodiment, it is parallel that electric current incoming end 13 with current output terminal 14 is located at substrate 11 The edge in two sidelines, electric current incoming end 13 are set to 11 front of substrate, and current output terminal 14 is set to 11 back side of substrate, electric current access End 13 is golden finger with current output terminal 14, by the electric current of the electric current incoming end 13 of a upper back light unit 1 and next back light unit 1 Output end 14 docks, and is then fixed together by welding, and two or more back light units 1 is made to be connected.Since FPC is very thin, because The stitching portion of this two back light units 1 will not be too thick, does not have too big influence to the globality of backlight.
The spacing of spacing and non-stitching portion between two back light units, 1 stitching portion adjacent LED can be set as unanimously, making in this way The LED distribution for obtaining monolith backlight is more uniform, so that it is uniform to shine.
Embodiment two
Fig. 4 to fig. 6 is please referred to, the present embodiment two provides a kind of sliceable direct-light-type backlight, including several is spliced Back light unit 2.Each back light unit 2 include substrate 21, set on several pads 22 of 21 top surface of substrate, on substrate 21 Electric current incoming end 23 and the current output terminal 24 on substrate 21, LED are welded on pad 22.
The substrate 21 is PCB, and with certain thickness, opposite two sides are parallel inclined-plane, in addition two sides Face can be that inclined-plane is also plane.Electric current incoming end 23 is located therein on an inclined-plane, and current output terminal 24 is set on another inclined-plane, The electric current incoming end 23 and current output terminal 24 are golden finger, by the electric current incoming end 23 of a upper back light unit 2 and next back The current output terminal 24 of light unit 2 docks, and is fixed together by welding, and two or more back light units 2 is made to be connected.
In the present embodiment, electric current incoming end 23 and current output terminal 24 are set to the side of substrate 21, spliced in this way When, splicing position will not swell, and keep the planarization of monolith backlight consistent.Simultaneously because PCB has certain thickness, by PCB Parallel two sides are set as inclined-plane, since inclined-plane can be complementary, can reduce the gap of 2 stitching portion of back light unit in this way.
The spacing of spacing and non-stitching portion between two back light units, 2 stitching portion adjacent LED can be set as unanimously, making in this way The LED distribution for obtaining monolith backlight is more uniform, so that it is uniform to shine.
Embodiment three
Fig. 7 to Fig. 9 is please referred to, the present embodiment three provides a kind of sliceable direct-light-type backlight, including several is spliced Back light unit 3.Each back light unit 3 include substrate 31, set on several pads 32 of 31 top surface of substrate, on substrate 31 Electric current incoming end 33 and the current output terminal 34 on substrate 31, LED are welded on pad 32.
The substrate 31 is PCB, and to be respectively arranged on substrate 31 opposite two for the electric current incoming end 33 and current output terminal 34 Side, electric current incoming end 33 are the metal contact piece of protrusion, and the current output terminal 34 is the gold to match with electric current incoming end 33 Belong to card slot, when splicing, the metal contact piece of a upper back light unit is inserted into the metal card slot of next back light unit, so that two Back light unit is stitched together.It is close-fitting between metal contact piece and metal card slot, after in metal contact piece insertion metal card slot, gold The edge for belonging to contact is concordant with the edge of substrate 31, without departing from 31 edge of substrate.
The metal contact piece is warp architecture, and shape and warp architecture of the metal card slot match, due to being equipped with Warp architecture, metal contact piece are not easy backing out from metal card slot.Preferably, more settable anti-on the metal contact piece Sliding, disconnecting prevention structure, for example some lines are set, metal contact piece can be further prevented backing out from metal card slot in this way.
The spacing of spacing and non-stitching portion between two back light unit stitching portion adjacent LEDs can be set as unanimously, making in this way The LED distribution for obtaining monolith backlight is more uniform, so that it is uniform to shine.
In conclusion backlight of the present invention compared to monoblock type, spliced backlight does not have to frequent design backing structure, The back light unit that several standard specifications need to only be designed, can produce the straight of all size by welding or being clamped back light unit Backlight shortens research and development and production cycle, reduces technology difficulty, reduces research and development and production cost.And this downward back The splicing construction of light source is simple, so that splicing is more convenient, is relatively beneficial to process.
The above is merely preferred embodiments of the present invention, be not intended to restrict the invention, it is all in spirit of the invention and Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within principle.

Claims (7)

1. a kind of sliceable direct-light-type backlight, which is characterized in that including several back light units being spliced, each backlight list Member includes substrate, several pads, the electric current incoming end on substrate and the electric current on substrate set on substrate top surface Output end, electric current incoming end are located at the edge in two different sidelines of substrate from current output terminal, a upper back light unit Electric current incoming end and the current output terminal of next back light unit are linked together by welding or clamping, and LED is welded on pad.
2. sliceable direct-light-type backlight according to claim 1, which is characterized in that the substrate is FPC, is rectangle Thin slice, the electric current incoming end and current output terminal are golden finger, and electric current incoming end is set to substrate front side, and current output terminal is set to Substrate back, the electric current incoming end of a upper back light unit and the current output terminal of next back light unit are by being welded to connect one It rises.
3. sliceable direct-light-type backlight according to claim 1, which is characterized in that the substrate is PCB, opposite Two sides are parallel inclined-plane, and electric current incoming end is located therein on an inclined-plane, and current output terminal is set on another inclined-plane, the electricity It flows incoming end and current output terminal is golden finger, the electric current incoming end of a upper back light unit and the electric current of next back light unit export End is by being welded together.
4. sliceable direct-light-type backlight according to claim 1, which is characterized in that the substrate is PCB, the electric current Incoming end and the current output terminal two sides that be respectively arranged on substrate opposite, electric current incoming end is the metal contact piece of protrusion, the electricity Stream output end is the metal card slot to match with electric current incoming end, and the metal contact piece of a upper back light unit is inserted into next back light unit Metal card slot in two back light units to be stitched together, between metal contact piece and metal card slot be close-fitting.
5. sliceable direct-light-type backlight according to claim 4, which is characterized in that the metal contact piece is bending knot Structure, shape and warp architecture of the metal card slot match.
6. sliceable direct-light-type backlight according to claim 4 or 5, which is characterized in that the metal contact piece is equipped with Several lines.
7. sliceable direct-light-type backlight described in -4 according to claim 1, which is characterized in that two back light unit stitching portions are adjacent Spacing between LED is identical as the spacing of non-stitching portion.
CN201811052534.3A 2018-09-10 2018-09-10 A kind of sliceable direct-light-type backlight Pending CN108873485A (en)

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Application Number Priority Date Filing Date Title
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110349942A (en) * 2019-07-01 2019-10-18 武汉华星光电技术有限公司 Mini LED backlight panel, backlight module
CN111965891A (en) * 2020-08-05 2020-11-20 武汉华星光电技术有限公司 LED lamp panel, spliced LED lamp panel and display device
CN112684631A (en) * 2019-10-18 2021-04-20 群创光电股份有限公司 Display device
WO2021189777A1 (en) * 2020-03-25 2021-09-30 重庆康佳光电技术研究院有限公司 Led display panel and led display
CN114488621A (en) * 2022-03-11 2022-05-13 惠州华星光电显示有限公司 Spliced light-emitting panel, backlight module and spliced display panel

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CN101154778A (en) * 2006-09-26 2008-04-02 陈卓英 Anti-drop power source plug socket group
CN101681052A (en) * 2007-03-19 2010-03-24 Lg伊诺特有限公司 Led module and backlight unit having the same
CN102230587A (en) * 2011-06-21 2011-11-02 昆山龙腾光电有限公司 LED (light-emitting diode) light bar, backlight module and liquid crystal display device
CN102842482A (en) * 2011-06-22 2012-12-26 株式会社杰士汤浅国际 Power supply construction of discharge lamp, discharge lamp unit and ultraviolet irradiation device
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Publication number Priority date Publication date Assignee Title
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CN111965891A (en) * 2020-08-05 2020-11-20 武汉华星光电技术有限公司 LED lamp panel, spliced LED lamp panel and display device
CN111965891B (en) * 2020-08-05 2021-04-27 武汉华星光电技术有限公司 LED lamp panel, spliced LED lamp panel and display device
CN114488621A (en) * 2022-03-11 2022-05-13 惠州华星光电显示有限公司 Spliced light-emitting panel, backlight module and spliced display panel

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