CN104989987B - LED light bar, backlight module and liquid crystal display - Google Patents

LED light bar, backlight module and liquid crystal display Download PDF

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Publication number
CN104989987B
CN104989987B CN201510347252.6A CN201510347252A CN104989987B CN 104989987 B CN104989987 B CN 104989987B CN 201510347252 A CN201510347252 A CN 201510347252A CN 104989987 B CN104989987 B CN 104989987B
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Prior art keywords
led
pad
circuit
liquid crystal
pads
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CN104989987A (en
Inventor
陈仕祥
陈倩
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Wuhan China Star Optoelectronics Technology Co Ltd
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Wuhan China Star Optoelectronics Technology Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F21V19/0015—Fastening arrangements intended to retain light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/001—Arrangement of electric circuit elements in or on lighting devices the elements being electrical wires or cables
    • 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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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Led Device Packages (AREA)

Abstract

The invention discloses a kind of LED light bar, including printed circuit board (PCB) and several be electrically connected at LED on the printed circuit board (PCB), the LED includes positive pole pin and negative pin, the spacing of positive pole pin and negative pin is L1, wherein, it is provided with m equidistantly arrangement pads and i circuit loops on the printed circuit board (PCB), the spacing of two neighboring pad is L2, and L2=L1；The i circuit loop includes i positive lead, at least one negative lead and some circuit connecting wires；By the diverse location being connected to several described LEDs in the m pad, whole loops in the i circuit loop or partial circuit are gated, obtains the LED light bar of a variety of different sizes.The invention also discloses the backlight module comprising LED light bar as described above and liquid crystal display.

Description

LED lamp strip, backlight module and liquid crystal display
Technical Field
The invention relates to the technical field of liquid crystal displays, in particular to an LED lamp bar, a backlight module adopting the LED lamp bar and a liquid crystal display comprising the backlight module.
Background
The lcd generally includes a liquid crystal panel and a backlight module, wherein the liquid crystal panel and the backlight module are disposed opposite to each other, and the backlight module provides a display light source to the liquid crystal panel to enable the liquid crystal panel to display an image. Because LED lamps have excellent characteristics, such as low power consumption, long lifetime, excellent color reproduction characteristics, and contrast, the conventional liquid crystal display devices mainly use LED lamps as the backlight source of the backlight module.
In order to meet the requirement of brightness, an LED light bar composed of a plurality of LED lamps connected in series is generally used in the backlight. As shown in fig. 7, the conventional LED light bar includes a printed circuit board 1 and a plurality of LED lights 2 electrically connected to the printed circuit board 1. Specifically, a plurality of sets of pads 3 and a circuit connecting line (not shown in the drawing) connecting the plurality of sets of pads 3 in series are disposed on the printed circuit board 1, each set of pads 3 includes a positive pad 3a and a negative pad 3b, a distance between the positive pad 3a and the negative pad 3b in one set of pads 3 is L1, a distance between the L1 and a distance between the positive pin 21 and the negative pin 22 of the LED lamp 2 are equal, and each LED lamp 2 is correspondingly connected to one set of pads 3. The spacing between two adjacent sets of pads 3 is L2, and typically L2 is greater than L1. Wherein, the positive electrode pad 3a of the first group of pads 3 is connected with a positive electrode connecting wire 4, the negative electrode pad 3b of the last group of pads 3 is connected with a negative electrode connecting wire 5, and the positive electrode connecting wire 4 and the negative electrode connecting wire 5 are connected to an external driving circuit.
In the development stage of the liquid crystal display, particularly for the liquid crystal display with medium and small size, the brightness of the backlight source can be evaluated only according to the database in the initial evaluation, and the number of the LED lamps in the LED lamp strip needs to be changed if the brightness does not meet the requirement after the sample is manufactured. According to the LED lamp strip with the structure, the plurality of LED lamps are connected in series to form a loop, wherein the number of the LED lamps is fixed, and the specifications of the LED lamp strip cannot be changed. At this time, when the number of the LED lamps needs to be changed, the corresponding printed circuit board needs to be redesigned, because the manufacturing cost of the printed circuit board in the LED light bar is high, the manufacturing period is long, and the corresponding changes of other parts of the backlight module may be involved, the development period of a new product is seriously affected, and the development cost is also increased.
Disclosure of Invention
In view of this, the present invention provides an LED light bar, which can be adjusted to be LED light bars of various specifications by improving a printed circuit board in the LED light bar so that a plurality of different numbers of LED lights can be connected to the same printed circuit board, and the LED light bar is applied to the development stage of a new product, thereby shortening the development period of the new product and reducing the development cost.
In order to achieve the purpose, the invention adopts the following technical scheme:
an LED lamp bar comprises a printed circuit board and a plurality of LED lamps electrically connected to the printed circuit board, wherein each LED lamp comprises an anode pin and a cathode pin, the distance between the anode pin and the cathode pin is L1, m pads and i circuit loops are arranged on the printed circuit board at equal intervals, the distance between every two adjacent pads is L2, and L2 is L1; the i circuit loops comprise i anode connecting wires, at least 1 cathode connecting wire and a plurality of circuit connecting wires; wherein, the i anode connecting wires are respectively connected to one of the (1 st, 3 rd, … th) and (2i-1) th bonding pads; the at least 1 negative connection line is connected to the m- (m-2), …, (m-2i +2) th pad; the circuit connecting line is used for connecting two bonding pads, wherein the nth bonding pad and the (n +2i-1) th bonding pad are connected with each other through the circuit connecting line; connecting the plurality of LED lamps to different positions in the m bonding pads, and gating all loops or part of loops in the i circuit loops to obtain various LED lamp strips with different specifications; wherein i is an integer greater than 1, m > > i, n ═ 2, 4, 6, ….
Preferably, the value of i is 2-5.
Preferably, i has a value of 2 or 3.
Preferably, the number of the negative connection lines is 1, and the m-th, (m-2), …, (m-2i +2) th pads are connected to the negative connection lines.
Preferably, the i circuit loops are connected in parallel, and the gated circuit loop comprises a plurality of LED lamps connected in series.
The invention provides a backlight module, which comprises a back plate, and a reflector, a light guide plate and an optical diaphragm group which are sequentially stacked on the back plate, wherein a light source is arranged on one side surface of the light guide plate, and the light source comprises the LED lamp strip.
The invention also provides a liquid crystal display which comprises a liquid crystal panel and the backlight module, wherein the liquid crystal panel and the backlight module are arranged oppositely, and the backlight module provides a display light source for the liquid crystal panel so that the liquid crystal panel can display images.
Has the advantages that:
according to the LED lamp strip provided by the embodiment of the invention, the printed circuit board is provided with the plurality of pads at equal intervals, and the interval between the two pads is equal to the interval between the anode pin and the cathode pin of the LED lamp, so that one LED lamp can be connected to any two adjacent pads. Furthermore, a plurality of circuit loops are arranged in the printed circuit board, and all or part of the circuit loops can be selected by selecting different numbers of LED lamps to be connected to different positions in the bonding pads, so that various LED lamp strips with different specifications (different numbers of LED lamps and different brightness) can be obtained. The LED lamp strip is applied to the development stage of new products, so that the development period of the new products can be shortened, and the development cost is reduced.
Drawings
Fig. 1 is a schematic structural diagram of an LED light bar in embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of another specification of the LED light bar in embodiment 1 of the invention.
Fig. 3 is a schematic structural diagram of an LED light bar in embodiment 2 of the invention.
Fig. 4 is a schematic structural diagram of another specification of an LED light bar in embodiment 2 of the present invention.
Fig. 5 is a schematic structural diagram of a backlight module in embodiment 3 of the invention.
Fig. 6 is a schematic structural diagram of a liquid crystal display in embodiment 3 of the invention.
Fig. 7 is a schematic structural diagram of a conventional LED light bar.
Detailed Description
As mentioned above, the present invention is directed to an LED light bar, wherein a printed circuit board of the LED light bar can be connected with a plurality of different numbers of LED lights, so as to form a plurality of LED light bars with different specifications (different numbers of LED lights, different brightness), thereby shortening the development period and the development cost of new products.
Therefore, the invention provides the LED lamp strip with the following structure, wherein the LED lamp strip comprises a printed circuit board and a plurality of LED lamps electrically connected to the printed circuit board.
The LED lamp comprises an anode pin and a cathode pin, the distance between the anode pin and the cathode pin is L1, the printed circuit board is provided with m pads and i circuit loops which are arranged at equal intervals, the distance between two adjacent pads is L2, and L2 is L1. Because the distance between the anode pin and the cathode pin of the LED lamp is L1 and is equal to the distance between two adjacent bonding pads is L2, one LED lamp can be connected to any two adjacent bonding pads according to the requirement.
Furthermore, the i circuit loops comprise i anode connecting wires, at least 1 cathode connecting wire and a plurality of circuit connecting wires; wherein, the i anode connecting wires are respectively connected to one of the (1 st, 3 rd, … th) and (2i-1) th bonding pads; the at least 1 negative connection line is connected to the m- (m-2), …, (m-2i +2) th pad; the circuit connecting line is used for connecting two bonding pads, wherein the nth bonding pad and the (n +2i-1) th bonding pad are connected with each other through the circuit connecting line. The circuit loop comprises 1 positive connecting wire, a plurality of bonding pads and a negative connecting wire, when the bonding pads in the circuit are connected with the LED lamps, the circuit loop is a path, and when the bonding pads in the circuit are not connected with the LED lamps, the circuit loop is disconnected. Therefore, by connecting the LED lamps to different positions in the m bonding pads and gating all loops or part of loops in the i circuit loops, LED lamp strips with various specifications are obtained. The i circuit loops are mutually connected in parallel, and the gated circuit loop comprises a plurality of LED lamps which are mutually connected in series.
In the above parameters, i is an integer greater than 1, m > i, and n is 2, 4, 6, ….
In a preferable scheme, the value of i is 2-5.
In a more preferred embodiment, i is 2 or 3.
More preferably, the number of the negative connection lines is 1, and the m-th pad, (m-2) th pad, … -th pad, and (m-2i +2) th pad are all connected to the negative connection lines.
Technical solutions in embodiments of the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, and not all 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 scope of the present invention.
Example 1
The embodiment provides an LED light bar, as shown in fig. 1, the LED light bar includes a printed circuit board 1 and a plurality of LED lights 2 electrically connected to the printed circuit board 1, the LED lights 2 include a positive pin 21 and a negative pin 22, and the distance between the positive pin 21 and the negative pin 22 is L1.
As shown in fig. 1, 12 pads 11 are arranged on the printed circuit board 1 at equal intervals, the interval between two adjacent pads 11 is L2, and L2 is L1. Because the distance between the positive pin 21 and the negative pin 22 of the LED lamp 2 is L1, which is equal to the distance between two adjacent pads 11, which is L2, one LED lamp 2 can be connected to any two adjacent pads 11 as required, wherein the positive pin 21 of the LED lamp 2 corresponds to one pad 11, and the negative pin 22 corresponds to another pad 11.
Further, as shown in fig. 1, the printed circuit board 1 is further provided with 2 circuit loops, and the 2 circuit loops include 2 positive connecting wires 31, 1 negative connecting wire 32, and a plurality of circuit connecting wires 33. In order to mark 12 pads 11 arranged at equal intervals from one end of the printed circuit board 1 as the 1 st to 12 th pads, then:
the 2 positive connection lines 31 are respectively connected to one of the pads 11 of 1 st, 3 rd, … th and (2i-1 th); specifically, in the present embodiment, the 2 positive connection lines 31 are connected to the 1 st and 3 rd pads 11, respectively.
The 1 negative connection line 32 is connected to the m-th, (m-2), …, (m-2i +2) th pad 11; specifically in the present embodiment, the negative connection line 32 is connected to the 12 th and 10 th pads 11 at the same time. Of course, in other embodiments, 1 negative connection line 32 may be connected to each of the 12 th and 10 th pads 11.
The circuit connecting line 33 is used for connecting two of the pads 11, wherein the nth pad 11 and the (n +2i-1) th pad 11 are connected with each other through a circuit connecting line 33; specifically, in the present embodiment, the 2 nd pad 11 and the 5 th pad 11 are connected to each other through a circuit connection line 33, the 4 th pad 11 and the 7 th pad 11 are connected to each other through another circuit connection line 33, the 6 th pad 11 and the 9 th pad 11 are connected to each other through another circuit connection line 33, and the 8 th pad 11 and the 11 th pad 11 are connected to each other through a circuit connection line 33.
The printed circuit board 1 in this embodiment comprises 12 pads 11, to which a maximum of 6 LED lamps 2 can be connected. As shown in fig. 1, 6 LED lamps 2 are connected to 12 pads 11 in sequence from the 1 st pad 11. At this time, 2 circuit loops in the printed circuit board 1 are all paths, one positive connecting wire 31, the 1 st, 3 rd and 5 th LED lamps 2 and the negative connecting wire 32 form one circuit path, the other positive connecting wire 31, the 2 nd, 4 th and 6 th LED lamps 2 and the negative connecting wire 32 form another circuit path, the two circuit paths are connected in parallel, and each circuit path comprises 3 LED lamps 2 connected in series.
As an alternative, 5 LED lamps 2 may be connected to the printed circuit board 1 provided in this embodiment to form an LED light bar of another specification. As shown in fig. 2, 5 LED lamps 2 are connected from the 2 nd land 11 of the printed circuit board 1 to the 11 th land 11. Only one of the 2 circuit loops in the printed circuit board 1 is a via, and one of the positive connecting lines 31, the 5 LED lamps 2 and the negative connecting line 32 form a circuit via, which includes 5 LED lamps 2 connected in series.
Therefore, in the embodiment, the plurality of LED lamps are connected to different positions in the 12 bonding pads, and all 2 circuit loops are gated or only 1 circuit loop is gated, so that the LED light bars with different specifications can be obtained.
Example 2
Unlike embodiment 1, as shown in fig. 3, the printed circuit board 1 of the present embodiment is provided with 3 circuit loops, where the 3 circuit loops include 3 positive connecting lines 31, 1 negative connecting line 32, and several circuit connecting lines 33. Wherein:
the 3 anode connecting lines 31 are respectively connected to one of the (1 st, 3 rd, … th) and (2i-1) th pads 11; specifically, in the present embodiment, the 3 positive electrode connection lines 31 are connected to the 1 st, 3 rd and 5 th pads 11, respectively.
The 1 negative connection line 32 is connected to the m-th, (m-2), …, (m-2i +2) th pad 11; specifically, in the present embodiment, the negative connection line 32 is connected to the 12 th, 10 th and 8 th pads 11 at the same time. Of course, in other embodiments, 1 negative connection line 32 may be connected to each of the 12 th, 10 th and 8 th pads 11.
The circuit connecting line 33 is used for connecting two of the pads 11, wherein the nth pad 11 and the (n +2i-1) th pad 11 are connected with each other through a circuit connecting line 33; specifically, in the present embodiment, the 2 nd pad 11 and the 7 th pad 11 are connected to each other through a circuit connection line 33, the 4 th pad 11 and the 9 th pad 11 are connected to each other through another circuit connection line 33, and the 6 th pad 11 and the 11 th pad 11 are connected to each other through another circuit connection line 33.
The printed circuit board 1 in this embodiment comprises 12 pads 11, to which a maximum of 6 LED lamps 2 can be connected. As shown in fig. 3, 6 LED lamps 2 are connected to 12 pads 11 in sequence from the 1 st pad 11. At this time, 3 circuit loops in the printed circuit board 1 are all paths, wherein one positive connecting wire 31, the 1 st and 4 th LED lamps 2 and the negative connecting wire 32 form one circuit path, the second positive connecting wire 31, the 2 nd and 5 th LED lamps 2 and the negative connecting wire 32 form a second circuit path, and the third positive connecting wire 31, the 3 rd and 6 th LED lamps 2 and the negative connecting wire 32 form a third circuit path. Three circuit paths are connected in parallel, and each circuit path comprises 2 LED lamps 2 which are connected in series.
As an alternative, only 3 LED lamps 2 may be connected to the printed circuit board 1 provided in this embodiment to form an LED light bar of another specification. As shown in fig. 4, 3 LED lamps 2 are respectively connected to the 2 nd, 3 rd, 6 th, 7 th, 10 th and 11 th pads 11. Only one of the 3 circuit loops in the printed circuit board 1 is a via, and one of the positive connecting lines 31, the 3 LED lamps 2 and the negative connecting line 32 form a circuit via, which includes 3 LED lamps 2 connected in series.
Therefore, in the embodiment, the plurality of LED lamps are connected to different positions in the 12 bonding pads, and all 3 circuit loops are gated or only 1 circuit loop is gated, so that the LED light bars with different specifications can be obtained.
Example 3
As shown in fig. 5, the backlight module includes a back plate 40, and a light reflecting plate 50, a light guide plate 60 and an optical film group 70 sequentially stacked on the back plate 40, wherein a side surface of the light guide plate 60 is provided with a light source 80, and the light source includes the LED light bar provided in embodiment 1 or embodiment 2.
As shown in fig. 6, the present embodiment further provides a liquid crystal display, which includes a liquid crystal panel 100 and a backlight module 200 provided in the present embodiment, wherein the liquid crystal panel 100 and the backlight module 200 are disposed opposite to each other, and the backlight module 200 provides a display light source to the liquid crystal panel 100, so that the liquid crystal panel 100 displays an image.
In summary, in the LED light bar provided in the embodiments of the present invention, the printed circuit board is provided with a plurality of pads at equal intervals, and the interval between two pads is equal to the interval between the anode pin and the cathode pin of the LED lamp, so that one LED lamp can be connected to any two adjacent pads. Furthermore, a plurality of circuit loops are arranged in the printed circuit board, and all or part of the circuit loops can be selected by selecting different numbers of LED lamps to be connected to different positions in the bonding pads, so that various LED lamp strips with different specifications (different numbers of LED lamps and different brightness) can be obtained. The LED lamp strip is applied to the development stage of new products, so that the development period of the new products can be shortened, and the development cost is reduced.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
It is to be understood that the scope of the present invention is not limited to the specific embodiments disclosed, and that various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (7)

1. An LED lamp strip comprises a printed circuit board and a plurality of LED lamps electrically connected to the printed circuit board, wherein each LED lamp comprises an anode pin and a cathode pin, the distance between the anode pin and the cathode pin is L1, and the LED lamp strip is characterized in that m pads and i circuit loops are arranged on the printed circuit board at equal intervals, the distance between every two adjacent pads is L2, and L2 is L1; the i circuit loops comprise i anode connecting wires, at least 1 cathode connecting wire and a plurality of circuit connecting wires; wherein,
the i anode connecting wires are respectively connected to one of the (1 st, 3 rd, … th) and (2i-1) th bonding pads;
the at least 1 negative connection line is connected to the m- (m-2), …, (m-2i +2) th pad;
the circuit connecting line is used for connecting two bonding pads, wherein the nth bonding pad and the (n +2i-1) th bonding pad are connected with each other through the circuit connecting line;
connecting the LED lamps to different positions in the m bonding pads to gate all or part of the i circuit loops, and obtaining LED lamp strips with different specifications on the printed circuit board;
wherein i is an integer greater than 1, m > > i, n ═ 2, 4, 6, ….
2. The LED light bar of claim 1, wherein i is 2-5.
3. The LED light bar of claim 1, wherein i is 2 or 3.
4. The LED light bar of claim 1, wherein the number of the negative connection lines is 1, and the m-th pad, (m-2) th pad, … -th pad, and (m-2i +2) th pad are all connected to the negative connection lines.
5. The LED light bar of any one of claims 1-4, wherein the i circuit loops are connected in parallel, and the gated circuit loop comprises a plurality of LED lights connected in series.
6. A backlight module comprises a back plate, a reflecting plate, a light guide plate and an optical diaphragm group, wherein the reflecting plate, the light guide plate and the optical diaphragm group are sequentially arranged on the back plate in a laminated mode, and a light source is arranged on one side face of the light guide plate, and is characterized in that the light source comprises the LED lamp strip according to any one of claims 1-5.
7. A liquid crystal display, comprising a liquid crystal panel and the backlight module of claim 6, wherein the liquid crystal panel is disposed opposite to the backlight module, and the backlight module provides a display light source to the liquid crystal panel to make the liquid crystal panel display an image.
CN201510347252.6A 2015-06-19 2015-06-19 LED light bar, backlight module and liquid crystal display Active CN104989987B (en)

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JP6689180B2 (en) * 2016-11-30 2020-04-28 ミネベアミツミ株式会社 Area lighting device
CN108055770A (en) * 2017-12-26 2018-05-18 江西合力泰科技有限公司 A kind of backlight FPC plates and backlight semi-finished product
CN109901328B (en) * 2019-04-11 2022-05-31 Oppo广东移动通信有限公司 Backlight module, display panel and display device
CN110676360B (en) * 2019-10-09 2021-10-15 创维液晶器件(深圳)有限公司 LED lamp strip, backlight unit and display device

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JP2007273204A (en) * 2006-03-31 2007-10-18 Sharp Corp Planar lighting apparatus and display device with same
CN101968187A (en) * 2010-08-20 2011-02-09 深圳市华星光电技术有限公司 Light emitting diode backlight module
CN201916870U (en) * 2010-10-27 2011-08-03 广州创维平面显示科技有限公司 LED backlight lamp line, LED liquid crystal module and display device thereof
CN102705758B (en) * 2012-05-25 2014-08-13 京东方科技集团股份有限公司 Backlight module and display device
CN104597650B (en) * 2015-02-16 2017-09-05 深圳市华星光电技术有限公司 The front frame and curved surface liquid crystal display device of curved surface liquid crystal display device

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