CN106773310A - A kind of lamp bar, backlight module and display device - Google Patents
A kind of lamp bar, backlight module and display device Download PDFInfo
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- CN106773310A CN106773310A CN201710002697.XA CN201710002697A CN106773310A CN 106773310 A CN106773310 A CN 106773310A CN 201710002697 A CN201710002697 A CN 201710002697A CN 106773310 A CN106773310 A CN 106773310A
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- led
- lamp bar
- trapezoidal
- light
- leds
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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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- Physics & Mathematics (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)
- Planar Illumination Modules (AREA)
Abstract
The present invention relates to display technology field,A kind of lamp bar is disclosed,Backlight module and display device,Lamp bar,Including printed circuit board (PCB),Also include being arranged at printed circuit board (PCB),And the multiple LEDs electrically connected with printed circuit board (PCB),The socket section of LED is trapezoidal,Multiple LEDs socket institute in the plane,The upper bottom of adjacent trapezoidal is arranged alternately,And projection of the trapezoidal bottom on upper bottom overlaps with the bottom of adjacent trapezoidal,So that the trapezoidal faces of multiple LEDs are mutually twisted arrangement,When parallel rays is projected from LED,Always with the presence of light in region between adjacent LED,Ensure that the continuity of light,Reduce the area in the region without light irradiation,And then reduce the area in dim light area,Ensure that the uniformity of the socket position luminous intensity of lamp bar,The light continuity of the backlight module with the LED light bar is preferable,And have the light source uniform of the display device of the backlight module preferable.
Description
Technical field
The present invention relates to display technology field, more particularly to a kind of lamp bar, backlight module and display device.
Background technology
Liquid crystal display has small volume, low in energy consumption, the low advantage of radiation due to it, is widely used to computer and shows
The equipment such as device, notebook computer, mobile phone and LCD TV.And liquid crystal display is used as a kind of passive luminescent device, its
Body does not light, it is necessary to backlight module makes its display image providing light source to liquid crystal panel.
In recent years due to the continuous progress of Display Technique, LED with its brightness it is high, excitation is high, long lifespan, reliability
It is good, without various advantages such as mercury pollution, the main selecting object of the light source in the backlight module as liquid crystal display, and
LED light bar be by LED particle be assembled in PCB substrate (preferably a kind of hard circuit substrate) or banding FPC (flexible circuits
Plate) on, then it is attached in the framework of backlight module, current LED backlight is as shown in figure 1, including framework 01 and installed in frame
Multiple LEDs 02 on frame 01, and in the case of the divergence of beam of LED 02 is isogonal, because LED 02 is in socket
There is spacing between the rectangular cross-section shape of the one end of framework (LED 02 away from) position 021, and multiple LEDs 02 causes Fig. 1
There is dim light area 03 shown shadow region, this dim light area 03 can have impact on backlight module viewing area luminous intensity uniformity and
Continuity, the light source for causing to incide on display panel is uneven so that display device occurs obviously hot spot.
Therefore it provides one kind can effectively reduce dim light area to improve the successional lamp bar of light, backlight module and display
Device is particularly important.
The content of the invention
The present invention provides a kind of lamp bar, backlight module and display device, and the lamp bar by being mutually twisted arrangement alternatively up and down
Trapezoidal LED ensure light continuity, and then reduce dim light area, the light continuity of the backlight module with the LED light bar
Preferably, have the light source uniform of the display device of the backlight module preferable.
To reach above-mentioned purpose, the present invention provides following technical scheme：
A kind of lamp bar, including printed circuit board (PCB), also including be arranged at the printed circuit board (PCB) and with the printed circuit board (PCB)
Multiple LEDs of electrical connection, the socket section of the LED be it is trapezoidal, multiple LEDs socket institute in the plane,
The upper bottom of adjacent trapezoidal is arranged alternately, and the projection of trapezoidal bottom on upper bottom overlaps with the bottom of adjacent trapezoidal.
In above-mentioned lamp bar, because the socket section of LED is trapezoidal, in trapezoidal parallel both sides, more long one
Base is bottom, and shorter one side is upper bottom, and multiple LEDs socket institute in the plane, the upper bottom of adjacent trapezoidal is handed over
Projection of the bottom for setting and trapezoidal on upper bottom overlaps with the bottom of adjacent trapezoidal so that the trapezoidal faces of multiple LEDs
Arrangement is mutually twisted, when parallel rays is projected from LED, always with the presence of light in the region between adjacent LED, is protected
The continuity of light is demonstrate,proved, the area in the region without light irradiation has been reduced, and then has reduced the area in dim light area, it is ensured that
The uniformity of the socket position luminous intensity of lamp bar.
Therefore, above-mentioned lamp bar ensure that light continuity by being mutually twisted the trapezoidal LED of arrangement alternatively up and down, and then
Reduce dim light area, it is ensured that the uniformity of the socket position luminous intensity of lamp bar.
Preferably, multiple LEDs include at least one first LEDs and two the second LEDs, two described second
LED is located at the both sides of the lamp group of at least one first LED arrangement forms, and described at least one first LEDs and two the
Trapezoidal high identical in the socket section of two LEDs.
Preferably, the socket section of each first LED is isosceles trapezoid, each second LED
Socket section is right-angled trapezium.
Preferably, multiple LEDs are the LED that two socket sections are right-angled trapezium.
Preferably, base angle of the isosceles trapezoid on bottom is less than or equal to 60 degree more than or equal to 30 degree；And/or, it is described
Base angle of the right-angled trapezium on bottom is less than or equal to 60 degree more than or equal to 30 degree.
Further, first LED and the second LED socket institute in the plane, adjacent isosceles trapezoid with it is straight
The trapezoidal adjacent waist edge in angle is parallel.
Preferably, multiple LEDs are integral type structure.
The present invention also provides a kind of backlight module, including framework, also including the lamp bar described in as above any one, the lamp bar
Install on said frame.
Because the trapezoidal LED that above-mentioned lamp bar passes through to be mutually twisted alternatively up and down arrangement ensures light continuity, and then subtract
Small dim light area, therefore, the light continuity of the backlight module with the LED light bar is preferable.
In addition, the present invention also provides a kind of display device, including display panel, also including backlight module as described above.
Because the light continuity of backlight module is preferable, therefore, the light source of the display device with the backlight module is uniform
Property is preferable.
Brief description of the drawings
A kind of structural representation of lamp bar that Fig. 1 is provided for background technology；
A kind of lamp bar structural representation that Fig. 2 is provided for the present invention；
A kind of close-up schematic view of lamp bar that Fig. 3 is provided for the present invention；
A kind of another close-up schematic view of lamp bar that Fig. 4 is provided for the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
As shown in Fig. 2 a kind of lamp bar, including printed circuit board (PCB), also including being arranged at printed circuit board (PCB) and and printed circuit
Multiple LEDs 1 of plate electrical connection, the socket section of LED 1 be it is trapezoidal, multiple LEDs 1 socket institute in the plane, it is adjacent
Trapezoidal upper bottom is arranged alternately, and the projection of trapezoidal bottom on upper bottom overlaps with the bottom of adjacent trapezoidal.
In above-mentioned lamp bar, because the socket section of LED 1 is trapezoidal, in trapezoidal parallel both sides, more long one
Base is bottom, and shorter one side is upper bottom, and multiple LEDs 1 socket institute in the plane, the upper bottom of adjacent trapezoidal is handed over
Projection of the bottom for setting and trapezoidal on upper bottom overlaps with the bottom of adjacent trapezoidal so that multiple LEDs 1 it is trapezoidal
Face is mutually twisted arrangement, when parallel rays is projected from LED 1, has light to deposit always in the region between adjacent LED 1
, it is ensured that the continuity of light, the area in the region without light irradiation is reduced, and then the area in dim light area is reduced,
Ensure that the uniformity of the socket position luminous intensity of lamp bar.
Therefore, above-mentioned lamp bar ensure that light continuity by being mutually twisted the trapezoidal LED 1 of arrangement alternatively up and down, enter
And reduce dim light area, it is ensured that the uniformity of the socket position luminous intensity of lamp bar.
As shown in Fig. 2, Fig. 3 and Fig. 4, in a kind of preferred embodiment, multiple LEDs 1 include at least one the oneth LED
Lamp 12 and two the second LEDs 11, two the second LEDs 11 are positioned at the lamp group of the arrangement form of at least one first LED 12
Both sides, high identical to ensure lamp bar highly trapezoidal with the socket section of two the second LEDs 11 of at least one first LEDs 12
Uniformity.
Specifically, the socket section of each the first LED 12 can be isosceles trapezoid, every 1 second LED 11
Socket section is right-angled trapezium.
In above-mentioned lamp bar, the socket section of each the first LED 12 is isosceles trapezoid, every 1 second LED 11
Socket section be right-angled trapezium, two the second LEDs 11 are located at the two of the lamp group of the arrangement form of at least one first LED 12
Side；At least one first LEDs 12 and two the second LEDs 11 sockets institute in the plane, adjacent first LED 12 and
The second adjacent LED 11 is arranged alternately with the upper bottom of the first LED 12, and the projection and phase of trapezoidal bottom on upper bottom
Adjacent trapezoidal bottom overlaps so that trapezoidal faces are mutually twisted arrangement, when parallel rays is projected from LED 1, adjacent first
With the presence of light in region between LED 12 and the second adjacent LED 11 and the first LED 12, it is ensured that the company of light
Continuous property, reduces the area in the region without light irradiation, and then reduces dim light area, it is ensured that the socket position light intensity of lamp bar
The uniformity of degree.
In a kind of preferred embodiment, multiple LEDs 1 can be that two socket sections are the LED 1 of right-angled trapezium.Can
So that by the light source design of existing multiple LED combinations into single strip light source, the advantage of this single strip light source is energy
Dim light area is enough completely eliminated, but the shortcoming of single strip light source is poor bending resistance, is held after by concentrating external force
Frangibility and damage, cause light source entirely ineffective, in order to avoid above mentioned problem, can be by the light source of existing multiple LED combinations
The LED 1 that two socket sections are right-angled trapezium is designed to, two socket sections set alternatively up and down for the LED 1 of right-angled trapezium
Put, with the presence of light in region between two the second LEDs 11 of one side, it is ensured that the continuity of light, reduce dim light area, really
The uniformity of the socket position luminous intensity of lamp bar is protected；On the other hand it is divided into two socket sections for setting alternatively up and down for right angle
Trapezoidal LED 1 is unlikely to cause the damage of light source and failure because bending resistance is poor.
In a kind of preferred embodiment, base angle of the isosceles trapezoid on bottom is less than or equal to 60 degree more than or equal to 30 degree；With/
Or, base angle of the right-angled trapezium on bottom is less than or equal to 60 degree more than or equal to 30 degree.
The shape of isosceles trapezoid and right-angled trapezium is actually selected according to the specific of lamp bar, and isosceles trapezoid is on bottom
Base angle can be 30 degree, 35 degree, 40 degree, 45 degree, 50 degree, 55 degree, 60 degree, base angle of the right-angled trapezium on bottom can be 30
Degree, 35 degree, 40 degree, 45 degree, 50 degree, 55 degree, 60 degree, the combination of isosceles trapezoid and right-angled trapezium has the in the following manner can to select：
Mode one, base angle of the isosceles trapezoid on bottom is less than or equal to 60 degree more than or equal to 30 degree, and right-angled trapezium is in bottom
On base angle do not limit；
Mode two, base angle of the right-angled trapezium on bottom is less than or equal to 60 degree more than or equal to 30 degree, and isosceles trapezoid is in bottom
On base angle do not limit；
Mode three, base angle of the isosceles trapezoid on bottom is less than or equal to 60 degree, and right-angled trapezium simultaneously more than or equal to 30 degree
Base angle on bottom is less than or equal to 60 degree more than or equal to 30 degree.
As shown in Fig. 2, Fig. 3 and Fig. 4, specifically, the plane where the socket of the first LED 12 and the second LED 11
On, adjacent isosceles trapezoid is parallel with the adjacent waist edge of right-angled trapezium.Base angle and right-angled trapezium of the isosceles trapezoid on bottom exist
Base angle on bottom is in the same size so that the first adjacent LED 12 and the trapezoidal faces of the second LED 11 are parallel, it is ensured that first
The alternately occlusion arrangement of 12 and second LED of LED 11, it is ensured that light between the first adjacent LED 12 and the second LED 11
Continuity, and then ensure the uniformity of the socket position luminous intensity of lamp bar.
On the basis of above-mentioned lamp bar, further, base angle of the right-angled trapezium on bottom is 45 degree.
In a kind of preferred embodiment, multiple LEDs 1 can be integral type structure, or split-type structural.Integrally
The LED 1 of formula structure is easy to make, and the lamp bar that the LED 1 of integral structure is formed installs simple, and Stability Analysis of Structures.
As shown in Fig. 2, Fig. 3 and Fig. 4, the present invention also provides a kind of backlight module, including framework 2, also including such as taking up an official post
The lamp bar of one, lamp bar is installed on the frame 2.
Because the trapezoidal LED 1 that above-mentioned lamp bar passes through to be mutually twisted alternatively up and down arrangement ensures light continuity, and then subtract
Small dim light area, therefore, the light continuity with the LED backlight module of 1 is preferable.
In addition, the present invention also provides a kind of display device, including display panel, also including backlight module as above.
Because the light continuity of backlight module is preferable, therefore, the light source of the display device with the backlight module is uniform
Property is preferable.
Obviously, those skilled in the art can carry out various changes and modification without deviating from this hair to the embodiment of the present invention
Bright spirit and scope.So, if these modifications of the invention and modification belong to the claims in the present invention and its equivalent technologies
Within the scope of, then the present invention is also intended to comprising these changes and modification.
Claims (9)
1. a kind of lamp bar, including printed circuit board (PCB), it is characterised in that also including be arranged at the printed circuit board (PCB) and with it is described
Multiple LEDs of printed circuit board (PCB) electrical connection, the socket section of the LED is trapezoidal, in the socket institute of multiple LEDs
In the plane, the upper bottom of adjacent trapezoidal is arranged alternately, and the projection of trapezoidal bottom on upper bottom and adjacent trapezoidal bottom
Overlap.
2. lamp bar according to claim 1, it is characterised in that multiple LEDs include at least one first LEDs and
Two the second LEDs, two second LEDs are described positioned at the both sides of the lamp group of at least one first LED arrangement forms
High identical trapezoidal with the socket section of two the second LEDs of at least one first LEDs.
3. lamp bar according to claim 2, it is characterised in that the socket section of each first LED for etc.
Waist is trapezoidal, and the socket section of each second LED is right-angled trapezium.
4. lamp bar according to claim 1, it is characterised in that multiple LEDs are that two socket sections are right angle ladder
The LED of shape.
5. lamp bar according to claim 3, it is characterised in that base angle of the isosceles trapezoid on bottom is more than or equal to 30
Degree is less than or equal to 60 degree；And/or, base angle of the right-angled trapezium on bottom is less than or equal to 60 degree more than or equal to 30 degree.
6. lamp bar according to claim 3, it is characterised in that where the socket of first LED and the second LED
In plane, adjacent isosceles trapezoid is parallel with the adjacent waist edge of right-angled trapezium.
7. the lamp bar according to any one of claim 1~6, it is characterised in that multiple LEDs are integral type structure.
8. a kind of backlight module, including framework, it is characterised in that also including the lamp bar as described in any one of claim 1~7,
The lamp bar is installed on said frame.
9. a kind of display device, including display panel, it is characterised in that also including backlight module as claimed in claim 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710002697.XA CN106773310A (en) | 2017-01-03 | 2017-01-03 | A kind of lamp bar, backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710002697.XA CN106773310A (en) | 2017-01-03 | 2017-01-03 | A kind of lamp bar, backlight module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106773310A true CN106773310A (en) | 2017-05-31 |
Family
ID=58949396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710002697.XA Pending CN106773310A (en) | 2017-01-03 | 2017-01-03 | A kind of lamp bar, backlight module and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106773310A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004342472A (en) * | 2003-05-16 | 2004-12-02 | Advanced Display Inc | Planar light source device and display device using the same |
| CN101571264A (en) * | 2008-04-30 | 2009-11-04 | 上海广电Nec液晶显示器有限公司 | LED backlight module |
| JP2010266543A (en) * | 2009-05-12 | 2010-11-25 | Toshiba Mobile Display Co Ltd | Liquid crystal display |
| JP2010287556A (en) * | 2009-05-15 | 2010-12-24 | Seiko Instruments Inc | Lighting device and display including the same |
| CN102620194A (en) * | 2012-03-12 | 2012-08-01 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN103807675A (en) * | 2014-01-28 | 2014-05-21 | 北京京东方显示技术有限公司 | LED light bar, backlight source and display device |
-
2017
- 2017-01-03 CN CN201710002697.XA patent/CN106773310A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004342472A (en) * | 2003-05-16 | 2004-12-02 | Advanced Display Inc | Planar light source device and display device using the same |
| CN101571264A (en) * | 2008-04-30 | 2009-11-04 | 上海广电Nec液晶显示器有限公司 | LED backlight module |
| JP2010266543A (en) * | 2009-05-12 | 2010-11-25 | Toshiba Mobile Display Co Ltd | Liquid crystal display |
| JP2010287556A (en) * | 2009-05-15 | 2010-12-24 | Seiko Instruments Inc | Lighting device and display including the same |
| CN102620194A (en) * | 2012-03-12 | 2012-08-01 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display device |
| CN103807675A (en) * | 2014-01-28 | 2014-05-21 | 北京京东方显示技术有限公司 | LED light bar, backlight source and display device |
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| PB01 | Publication | ||
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Application publication date: 20170531 |