CN208596273U - A kind of lamp bar, backlight module and liquid crystal display device - Google Patents
A kind of lamp bar, backlight module and liquid crystal display device Download PDFInfo
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- CN208596273U CN208596273U CN201821413275.8U CN201821413275U CN208596273U CN 208596273 U CN208596273 U CN 208596273U CN 201821413275 U CN201821413275 U CN 201821413275U CN 208596273 U CN208596273 U CN 208596273U
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Abstract
The utility model discloses a kind of lamp bar, backlight module and liquid crystal display device, wherein lamp bar includes: circuit substrate and is arranged on circuit substrate, and along M LED light group of predetermined direction arrangement；Each LED light group includes: multiple along predetermined direction arrangement, and concatenated LED, circuit substrate include: cathode output end and cathode output end；Wherein, the first pole of first LED in first LED light group is connect with cathode output end, the second pole of the last one LED is connect with cathode output end, the first pole of the last one LED in m-th LED light group is connect with cathode output end, second pole of first LED light is connect with cathode output end, M >=2.The utility model strengthens the LED electrostatic protection effect for being located at special-shaped corner area periphery, and then avoids LED light bar in the LED close to special-shaped corner area there is a phenomenon where dead lamp, improves display effect, enhances user experience.
Description
Technical field
The utility model relates to field of display technology, and in particular to a kind of lamp bar, backlight module and liquid crystal display device.
Background technique
With the high speed development of field of display technology, comprehensive screen technology rapidly becomes the development trend of display industry.Due to
The frame of liquid crystal display device is more and more narrow, so that the backlight module in liquid crystal display device is accompanied by depositing for special-shaped corner cut more
?.Wherein, ((Light Emitting Diode, abbreviation LED) lamp bar is the light source source of backlight module to light emitting diode, is
The service life of liquid crystal display device is promoted, backlight module, which is produced, to be tested by Electro-static Driven Comb.
Through inventor the study found that when carrying out Electro-static Driven Comb test, LED light bar is in the LED close to special-shaped corner area
It easily there is a phenomenon where dead lamp, causes display abnormal, and then influences user experience.
Utility model content
In order to solve the above-mentioned technical problem, the utility model provides a kind of lamp bar, backlight module and liquid crystal display device,
LED light bar be can be avoided in the LED close to special-shaped corner area there is a phenomenon where dead lamp, display effect is improved, enhance use
Family experience.
In order to reach the utility model aim, the utility model provides a kind of lamp bar, comprising: circuit substrate and setting
On the circuit substrate, and along M LED light group of predetermined direction arrangement；Each LED light group includes: multiple along predetermined direction
Arrangement, and concatenated LED, the circuit substrate include: cathode output end and cathode output end；
Wherein, the first pole of first LED in first LED light group is connect with cathode output end, the last one LED's
Second pole is connect with cathode output end, the first pole of the last one LED in m-th LED light group is connect with cathode output end, the
Second pole of one LED light is connect with cathode output end, M >=2.
Optionally, as M > 2, the first pole of first LED of i-th of LED light group is connect with cathode output end, last
The second pole of a LED is connect with cathode output end or the first pole of the last one LED of i-th of LED light group is exported with anode
End connection, the second pole of first LED light are connect with cathode output end, 1 < i < M.
Optionally, the cathode output end includes: M negative pole end；The LED light group and negative pole end correspond；
Wherein, each LED light group is connected with corresponding negative pole end.
Optionally, multiple LED are uniformly arranged on circuit substrate.
Optionally, the number of the LED in each LED light group is identical.
Optionally, the LED pad for fixing LED is provided on the circuit substrate；
The circuit substrate further include: ground terminal.
Optionally, the LED is adopting surface mounted LED.
Optionally, the circuit substrate is flexible circuit board or hard wiring board.
Second aspect, the utility model embodiment provide a kind of backlight module, comprising: backboard and are arranged on backboard
Multiple above-mentioned lamp bars.
The third aspect, the utility model also provide a kind of liquid crystal display device, comprising: above-mentioned backlight module.
The utility model provides a kind of lamp bar, backlight module and liquid crystal display device, wherein the lamp bar, comprising: circuit base
Plate and the M LED light group for being arranged on circuit substrate, and arranging along predetermined direction；Each LED light group includes: multiple along pre-
Determine direction arrangement, and concatenated LED, circuit substrate include: cathode output end and cathode output end；Wherein, first LED light group
In the first pole of first LED connect with cathode output end, the second pole of the last one LED is connect with cathode output end, M
The first pole of the last one LED in a LED light group is connect with cathode output end, and the second pole of first LED light and cathode are defeated
Outlet connection, M >=2.The utility model is by way of series connection partial pressure, so that being located at the LED on special-shaped corner area periphery quiet
When electricity release detection, discharge path is lengthened, and strengthens the LED electrostatic protection effect for being located at special-shaped corner area periphery, and then keep away
Exempt from LED light bar in the LED close to special-shaped corner area there is a phenomenon where dead lamp, improves display effect, enhance user experience.
Certainly, implement the utility model any product or method it is not absolutely required to and meanwhile reach all the above
Advantage.Other features and advantages of the utility model will illustrate in subsequent specification embodiment, also, partly from explanation
It becomes apparent in book embodiment, or is understood and implementing the utility model.The purpose of the utility model embodiment and
Other advantages can be achieved and obtained by structure specifically noted in the specification, claims and drawings.
Detailed description of the invention
Attached drawing is used to provide to further understand technical solutions of the utility model, and constitutes part of specification,
It is used to explain the technical solution of the utility model together with embodiments herein, not constitute to technical solutions of the utility model
Limitation.
Fig. 1 is the structural schematic diagram of existing LED light bar；
Fig. 2 is the equivalent circuit diagram of existing LED light bar；
Fig. 3 is the structural schematic diagram of lamp bar provided by the embodiment of the utility model；
Fig. 4 is the equivalent circuit diagram of lamp bar provided by the embodiment of the utility model.
Specific embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, below in conjunction with attached drawing to this
The embodiment of utility model is described in detail.It should be noted that in the absence of conflict, embodiment in the application and
Feature in embodiment can mutual any combination.
Step shown in the flowchart of the accompanying drawings can be in a computer system such as a set of computer executable instructions
It executes.Also, although logical order is shown in flow charts, and it in some cases, can be to be different from herein suitable
Sequence executes shown or described step.
Fig. 1 is the structural schematic diagram of existing LED light bar, and Fig. 2 is the equivalent circuit diagram of existing LED light bar, such as Fig. 1 and Fig. 2
Shown, it includes: 4 signal ends, a positive signal end on circuit substrate 1 that LED light bar, which includes: circuit substrate 1 and multiple LED,
A, two negative signal end K1 and K2 and ground terminal GND.
Multiple LED be distributed as two strings series connection, first string include: LED1, LED3, LED5, LED7, LED9, LED11,
LED13 and LED15, wherein the anode of positive signal end A connection LED1, the cathode of LED1 is connected with the anode of LED3, with such
It pushes away, the cathode of LED15 is connected with negative signal end K2, and then realizes the series connection of the first string LED.Second string include: LED2,
LED4, LED6, LED8, LED10, LED12, LED14 and LED16, wherein positive signal end A is connected with the anode of LED2, LED2
Cathode be connected with the anode of LED4, and so on, the cathode of LED16 is connected with negative signal end K1, and then realize first string
The series connection of LED.When carrying out Electro-static Driven Comb test to it, when probe strikes LED15, the mono- lamp of only LED15 is born, probe impact
When LED16, the mono- lamp of only LED16 is born, so that the LED electrostatic protection effect for being located at special-shaped corner area periphery is bad, in turn
There is a phenomenon where dead lamps in the LED close to special-shaped corner area for LED light bar.
In order to solve the above-mentioned technical problem, the utility model provides a kind of lamp bar, backlight module and liquid crystal display device.
Embodiment one
Fig. 3 is the structural schematic diagram of lamp bar provided by the embodiment of the utility model, and Fig. 4 provides for the utility model embodiment
Lamp bar equivalent circuit diagram, as shown in Figure 3 and Figure 4, lamp bar provided by the embodiment of the utility model include: circuit substrate 10 with
And it is arranged on circuit substrate 10, and along M LED light group of predetermined direction arrangement；Each LED light group includes: multiple along predetermined
Direction arrangement, and concatenated LED, circuit substrate include: cathode output end P and cathode output end N.
Wherein, the first pole of first LED in first LED light group is connect with cathode output end P, the last one LED
The second pole connect with cathode output end N, the first pole of the last one LED in m-th LED light group and cathode output end P connect
It connects, the second pole of first LED light is connect with cathode output end N.
Specifically, first is extremely positive, the second extremely cathode.What multiple concatenated LED were indicated is the cathode of first LED
Connect with the anode of second LED, the cathode of second LED is connect with the positive of third LED.
Optionally, the numerical value of M >=2, specific M determines that the utility model is not limited in any way this according to demand, generally
For, M is 2 or 3, is illustrated for being 2 LED light groups such as Fig. 3 and Fig. 4, the utility model is not limited in any way this.
Optionally, the quantity for the LED that each LED light group includes can be to be multiple, if Fig. 3 and Fig. 4 is with each LED light group
Including LED quantity be 8 for be illustrated, the utility model is not limited in any way this.
Optionally, circuit substrate 10 is substantially in strip flat plate, and the set-up mode of circuit substrate 10 be not limited to it is horizontal, perpendicular
Straight or other directions, it should be noted that the shape of circuit substrate is not limited with strip, can be according to the use of LED light bar
Demand is adjusted flexibly.
Specifically, the predetermined direction in the present embodiment is direction identical with the extending direction of the long side of circuit substrate.
As shown in Figure 3 and Figure 4, with 2 LED light groups, each LED light group includes: to be illustrated for 8 LED, along pre-
Determine direction, by LED number consecutively be LED1, LED2 ..., LED16, wherein first LED in first LED light group be
LED1, the last one LED are LED8, and first LED in second LED light group is LED9, the last one LED is LED16.
In the present embodiment, first LED light group includes: concatenated LED1, LED2, LED3, LED4, LED5, LED6, LED7
And LED8, wherein the anode of LED1 is connect with cathode output end P, and the cathode of LED1 and the anode of LED2 connect, the cathode of LED2
It is connect with the anode of LED3, and so on, the cathode of LED7 and the anode of LED8 connect, the cathode and cathode output end N of LED8
Connection.Second LED light group includes: concatenated LED9, LED10, LED11, LED12, LED13, LED14, LED15 and LED16,
Wherein, the anode of LED16 connect with cathode output end P, the anode connection of the cathode of LED16 and LED15, the cathode of LED15 and
The anode connection of LED14, and so on, the cathode of LED10 and the anode of LED9 connect, the cathode and cathode output end N of LED9
Connection.
As shown in figure 3, the LED for being located at special-shaped corner area periphery includes: LED1, LED2, LED15 and LED16, to lamp bar
When carrying out Electro-static Driven Comb test, when electrostatic probe impact is located at the LED16 on special-shaped corner areas periphery, have LED9, LED10,
Totally 8 LED carry out series connection partial pressure by LED11, LED12, LED13, LED14 and LED15, when electrostatic probe impact is located at special-shaped corner
When the LED15 of area peripheral edge, having LED9, LED10, LED11, LED12, LED13 and LED14, totally 7 LED carry out series connection partial pressure.
The present embodiment increases the electrostatic discharging path for being located at the LED on special-shaped corner area periphery by the route of optimization circuit substrate,
And then reach the electrostatic protection effect for reinforcing the LED of special-shaped corner cut site boundary.
Lamp bar provided by the utility model includes: circuit substrate and is arranged on circuit substrate, and is arranged along predetermined direction
M LED light group of cloth；Each LED light group includes: multiple along predetermined direction arrangement, and concatenated LED, circuit substrate include: just
Pole output end and cathode output end；Wherein, the first pole of first LED in first LED light group is connect with cathode output end,
The second pole of the last one LED is connect with cathode output end, the first pole of the last one LED in m-th LED light group and anode
Output end connection, the second pole of first LED light are connect with cathode output end, M >=2.The utility model passes through series connection partial pressure
Mode, so that being located at the LED on special-shaped corner area periphery when Electro-static Driven Comb detects, discharge path is lengthened, and strengthens positioned at different
The LED electrostatic protection effect on shape corner area periphery, and then avoid LED light bar and occur in the LED close to special-shaped corner area
The phenomenon that dead lamp, improves display effect, enhances user experience.
Optionally, as M > 2, the first pole of first LED of i-th of LED light group is connect with cathode output end, last
The second pole of a LED is connect with cathode output end or the first pole of the last one LED of i-th of LED light group is exported with anode
End connection, the second pole of first LED light are connect with cathode output end, 1 < i < M.
In the present embodiment, since the electrostatic protection effect for being located at the LED in the middle part of LED light bar is preferable, in order to guarantee
The flexibility of LED light bar setting, if including three or three or more lamp groups, except first lamp group or the last one lamp group it
The connection type of LED in other outer lamp groups does not limit specifically.
Optionally, the cathode output end N on circuit substrate in order to guarantee that LED light bar works normally, in the utility model
It include: M negative pole end；LED light group and negative pole end correspond；Wherein, each LED light group is connected with corresponding negative pole end.
Specifically, by taking two groups of LED light groups as an example, as shown in Figures 3 and 4, cathode output end N include: two negative pole end N1 and
N2, wherein first group of LED light group is connect with negative pole end N2, and second group of LED light group is connect with negative pole end N1.
As shown in figure 3, circuit substrate 10 further include: ground terminal GND.
Optionally, in order to guarantee display effect, multiple LED are uniformly arranged on circuit substrate.
Optionally, in order to further ensure the display effect of displayed content, the number phase of the LED in each LED light group
Together.
Optionally, it is used for as shown in figure 3, being provided on circuit substrate 10 in lamp bar provided by the embodiment of the utility model
The LED pad 20 of fixed LED.
Wherein, LED pad includes anode and cathode, and "+" is expressed as the anode of pad in Fig. 3.Specifically, the anode of pad
It is connect with the anode of LED, the cathode of pad and the cathode of LED connect.
Optionally, LED is adopting surface mounted LED.
In the present embodiment, the occupancy volume of lamp bar can not only be reduced using bonded LED lamp, further realize narrow side
Frame, additionally it is possible to improve the important display index such as color consistency, visual angle of display device.
Optionally, circuit substrate 10 is flexible circuit board or hard wiring board, it should be noted that circuit substrate also may be used
It is suitable for the circuit substrate of LED light bar for other.
Preferably, circuit substrate 10 is flexible circuit board.
Embodiment two
Inventive concept based on the above embodiment, the utility model embodiment also provide a kind of backlight module, this is practical new
The backlight module that type provides includes: backboard and multiple lamp bars for being arranged on backboard.
Optionally, the quantity of lamp bar determines that the utility model is not limited in any way this according to actual needs.
Wherein, lamp bar is the lamp bar that embodiment one provides, and realization principle is similar with effect is realized, details are not described herein.
Embodiment three
Inventive concept based on the above embodiment, the utility model also provide a kind of liquid crystal display device.The utility model
The liquid crystal display device of offer includes: backlight module.
Specifically, backlight module is used to provide backlight for liquid crystal display device.
Wherein, the backlight module in the present embodiment is the backlight module that embodiment two provides, realization principle and realization effect
Fruit is like details are not described herein.
Specifically, liquid crystal display device can be mobile phone, tablet computer, television set, display, laptop, number
Any restriction is not done in any products or components having a display function such as photo frame, navigator, the utility model embodiment comparison.
It should be noted that liquid crystal display device described in the utility model embodiment can be twisted-nematic
(Twisted Nematic, abbreviation TN) mode, vertical (Vertical Alignment, abbreviation VA) mode, plane conversion technology
(In-plane Switching, abbreviation IPS) mode or advanced Chao Wei factory switch technology (Advance super Dimension
Switch, abbreviation ADS) mode, the utility model do not do any restriction to this.
Although embodiment disclosed by the utility model is as above, the content only the utility model for ease of understanding
And the embodiment used, it is not intended to limit the utility model.Technical staff in any the utility model fields,
Under the premise of not departing from spirit and scope disclosed by the utility model, it can be carried out in the form and details of implementation any
Modification and variation, but the scope of patent protection of the utility model, still should be subject to the scope of the claims as defined in the appended claims.
Claims (10)
1. a kind of lamp bar characterized by comprising circuit substrate and be arranged on the circuit substrate, and along predetermined direction
M LED light group of arrangement；Each LED light group include: it is multiple arrange along predetermined direction, and concatenated LED, the circuit substrate
It include: cathode output end and cathode output end；
Wherein, the first pole of first LED in first LED light group is connect with cathode output end, and the second of the last one LED
Pole is connect with cathode output end, the first pole of the last one LED in m-th LED light group is connect with cathode output end, and first
Second pole of LED light is connect with cathode output end, M >=2.
2. lamp bar according to claim 1, which is characterized in that as M > 2, the of first LED of i-th of LED light group
One pole is connect with cathode output end, the second pole of the last one LED connect with cathode output end or i-th of LED light group most
The first pole of the latter LED is connect with cathode output end, and the second pole of first LED light is connect with cathode output end, 1 < i < M.
3. lamp bar according to claim 1 or 2, which is characterized in that the cathode output end includes: M negative pole end；It is described
LED light group and negative pole end correspond；
Wherein, each LED light group is connected with corresponding negative pole end.
4. lamp bar according to claim 1, which is characterized in that multiple LED are uniformly arranged on circuit substrate.
5. lamp bar according to claim 1, which is characterized in that the number of the LED in each LED light group is identical.
6. lamp bar according to claim 1, which is characterized in that be provided with the LED for fixing LED on the circuit substrate
Pad；
The circuit substrate further include: ground terminal.
7. lamp bar according to claim 1, which is characterized in that the LED is adopting surface mounted LED.
8. lamp bar according to claim 1, which is characterized in that the circuit substrate is flexible circuit board or hard route
Plate.
9. a kind of backlight module characterized by comprising backboard and the multiple such as claims 1 being arranged on the backboard
~8 described in any item lamp bars.
10. a kind of liquid crystal display device characterized by comprising backlight module as claimed in claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821413275.8U CN208596273U (en) | 2018-08-30 | 2018-08-30 | A kind of lamp bar, backlight module and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821413275.8U CN208596273U (en) | 2018-08-30 | 2018-08-30 | A kind of lamp bar, backlight module and liquid crystal display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208596273U true CN208596273U (en) | 2019-03-12 |
Family
ID=65605468
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821413275.8U Expired - Fee Related CN208596273U (en) | 2018-08-30 | 2018-08-30 | A kind of lamp bar, backlight module and liquid crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208596273U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021258928A1 (en) * | 2020-06-24 | 2021-12-30 | 京东方科技集团股份有限公司 | Light bar, backlight module, and display device |
-
2018
- 2018-08-30 CN CN201821413275.8U patent/CN208596273U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021258928A1 (en) * | 2020-06-24 | 2021-12-30 | 京东方科技集团股份有限公司 | Light bar, backlight module, and display device |
| US20220364711A1 (en) * | 2020-06-24 | 2022-11-17 | Beijing Boe Optoelectronics Technology Co., Ltd. | Light strip, backlight module and display device |
| US11732874B2 (en) * | 2020-06-24 | 2023-08-22 | Beijing Boe Optoelectronics Technology Co., Ltd. | Light strip, backlight module and display device |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190312 Termination date: 20210830 |