CN101988663A - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
- Publication number
- CN101988663A CN101988663A CN201010509564XA CN201010509564A CN101988663A CN 101988663 A CN101988663 A CN 101988663A CN 201010509564X A CN201010509564X A CN 201010509564XA CN 201010509564 A CN201010509564 A CN 201010509564A CN 101988663 A CN101988663 A CN 101988663A
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- China
- Prior art keywords
- light source
- reflecting layer
- circuit board
- backlight module
- emitting area
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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
-
- 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
- G02F1/133605—Direct backlight including specially adapted reflectors
Abstract
The invention provides a backlight module and a display device. The backlight module comprises a circuit board, a light source and a reflecting layer, wherein the light source is provided with a luminous surface and electrically connected with the circuit board; and the reflecting layer is flush with the luminous surface of the light source, or the height difference between the reflecting layer and the luminous surface of the light source is less than 1 millimeters, so that the height difference between the reflecting layer and the luminous surface of the light source is reduced. The invention can improve the utilization rate of reflected light.
Description
[technical field]
The present invention relates to a kind of backlight module and display unit, particularly relate to a kind of backlight module and display unit that improves catoptrical utilization rate.
[background technology]
(Liquid Crystal Display LCD) has been widely used in the various electronic products LCD, and the LCD major part is the backlight LCD, and it is made up of display panels and backlight module (backlight module).Backlight module can be divided into side direction type light inlet (Side-light type) and two kinds of straight-down negative light inlets (Direct-light type) according to the difference of light source incoming position, and using provides backlight to display panels.
Light emitting diode (LED) backlight module with straight-down negative is an example, and it is to use LED to be used as light source.Usually, in this LED-backlit module, a plurality of LED are arranged on the circuit board, and reflector plate or reflecting plate can smoothly be arranged between the LED or around it, with the light of reflection LED.
Yet,, thereby can have a difference in height between the reflecting surface of the light-emitting area of LED and reflector plate because LED is obviously to be flattened on height on the circuit board greater than reflector plate in the packaging height on the circuit board.Because the light of LED is difficult for being reflected in the zone of this difference in height, thereby the light of LED can't be effectively utilized in the zone of this difference in height, and reduces the light utilization of LED.
So, be necessary to provide a kind of backlight module and display unit, to solve the existing in prior technology problem.
[summary of the invention]
One of purpose of the present invention is to provide a kind of backlight module, and described backlight module comprises:
Circuit board;
Light source has light-emitting area, and described light source and described circuit board electrically connect;
The reflecting layer, be arranged on described light source around, the described light-emitting area of described reflecting layer and described light source is positioned at the same side of described circuit board; And
At least one support unit is arranged between described circuit board and the described reflecting layer, and supports described reflecting layer.
Two of purpose of the present invention is to provide a kind of display unit, and described display unit comprises:
Display floater; And
Backlight module comprises:
Circuit board;
Light source has light-emitting area, and described light source is to electrically connect with described circuit board;
The reflecting layer, be arranged on described light source around, the described light-emitting area of described reflecting layer and described light source is positioned at the same side of described circuit board; And
At least one support unit is arranged between described circuit board and the described reflecting layer, and supports described reflecting layer.
Three of purpose of the present invention is to provide a kind of backlight module, and it comprises circuit board, light source and reflecting layer, and described light source has light-emitting area, and described light source and described circuit board electrically connect; It is characterized in that: described circuit board offers through hole, is used to be embedded described light source, and described reflecting layer is arranged on the described circuit board, and the described light-emitting area of described reflecting layer and described light source is positioned at the same side of described circuit board.
In one embodiment of this invention, described support unit is a pillar cell.
In one embodiment of this invention, described reflecting layer is reflecting plate or reflector plate.
In one embodiment of this invention, described support unit is tabular, and is provided with several through holes, in order to be embedded described light source; Described circuit board is arranged on the relative both sides of described support unit with described reflecting layer.
In one embodiment of this invention, described reflecting layer is reflecting plate, reflector plate or is coated on reflectance coating on the support unit.
In one embodiment of this invention, described reflecting layer flush with the described light-emitting area of described light source or the described light-emitting area of described reflecting layer and described light source between described difference in height less than 1 millimeter.
In one embodiment of this invention, described reflecting layer is reflecting plate, reflector plate or the reflectance coating that is coated on circuit board surface.
In one embodiment of this invention, described reflecting layer flush with the described light-emitting area of described light source or the described light-emitting area of described reflecting layer and described light source between described difference in height less than 1 millimeter.
Backlight module of the present invention and display unit can reduce the difference in height between the light-emitting area of reflecting layer and light source, reducing the loss of light in the zone of this difference in height, and improve catoptrical utilization rate.
[description of drawings]
Fig. 1 shows the generalized section according to the backlight module and the display floater of the first embodiment of the present invention;
Fig. 2 shows the cut-away section schematic diagram according to the backlight module of the first embodiment of the present invention;
Fig. 3 shows another part generalized section according to the backlight module of the first embodiment of the present invention;
Fig. 4 shows the cut-away section schematic diagram according to the backlight module of the second embodiment of the present invention;
Fig. 5 shows the cut-away section schematic diagram according to the backlight module of the third embodiment of the present invention;
Fig. 6 shows the cut-away section schematic diagram according to the backlight module of the fourth embodiment of the present invention.
[specific embodiment]
For the present invention can be become apparent, preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below:
Below the explanation of each embodiment be with reference to additional graphic, can be in order to illustration the present invention in order to the specific embodiment of implementing.The direction term that the present invention mentioned, for example " on ", D score, " preceding ", " back ", " left side ", " right side ", " interior ", " outward ", " side " etc., only be direction with reference to annexed drawings.Therefore, the direction term of use is in order to explanation and understands the present invention, but not in order to restriction the present invention.
In the drawings, the unit of structural similarity is to represent with same numeral.
Please refer to Fig. 1 and Fig. 2, Fig. 1 shows the generalized section according to the backlight module and the display floater of the first embodiment of the present invention, and Fig. 2 shows the cut-away section schematic diagram according to the backlight module of the first embodiment of the present invention.The backlight module 100 of present embodiment can be direct type backlight module, and it is provided with respect to a display floater 101, and described display floater 101 can be display panels, and forms a display unit, as liquid crystal indicator etc.Backlight module 100 can comprise backboard 110, several light sources 120, circuit board 130, reflecting layer 140, at least one support unit 150 and blooming piece 160.
As shown in Figure 1, the backboard 110 of present embodiment is made by light tight material, for example: the combination of plastifying material, metal material or above-mentioned material, in order to carrying light source 120, circuit board 130 and blooming piece 160.
As depicted in figs. 1 and 2, circuit board 130 is arranged on the backboard 110, circuit board 130 can be printed circuit board (PCB) (Printed circuit board, PCB) or flexible printed circuit board (Flexible Printed Circuits, FPC).Described circuit board 130 comprises conductive layer 131 and dielectric layer 132, and conductive layer 131 is formed on the dielectric layer 132, is used for electrically connecting with the electrode pin 123 of light source 120.Conductive layer 131 is preferably formed by metal material, for example is copper foil layer.
As shown in Figure 2, the support unit 150 of present embodiment is arranged between circuit board 130 and the described reflecting layer 140, and supporting reflex layer 140.Support unit 150 is made by insulating materials, for example plastics or rubber etc., and described support unit 150 is a plurality of pillar cells, and support unit 150 can utilize welding, stick together or spiral shell is solid etc., and mode is arranged on the circuit board 130.
Reflecting layer 140 is arranged on the support unit 150, and is formed between the light source 120 or around it, with the difference in height between the light-emitting area 121 that reduces reflecting layer 140 and light source 120.The reflecting layer 140 of present embodiment can be reflecting plate or reflector plate, is used for reflection ray.This reflecting layer 140 is made by highly reflective material, and for example the alloy of silver, aluminium, gold, chromium, copper, indium, iridium, nickel, platinum, rhenium, rhodium, tin, tantalum, tungsten, manganese, its above-mentioned any combination or anti-yellow and heat-resisting white reflect paint vehicle etc.
As shown in Figure 2, support by support unit 150, the reflecting surface in reflecting layer 140 can flush the light-emitting area 121 in light source 120 substantially, perhaps, difference in height between the light-emitting area 121 of the reflecting surface in reflecting layer 140 and light source 120 can for example be preferably less than 100 microns (μ m) less than 1 millimeter (mm).Therefore, compared to existing backlight module, the difference in height between the light-emitting area 121 of the reflecting surface in reflecting layer 140 and light source 120 can be eliminated or reduce significantly, with the loss of minimizing light in the zone of this difference in height, and improves catoptrical utilization rate.
Therefore, the backlight module 100 of present embodiment can utilize support unit 150 to reduce difference in height between the light-emitting area 121 of reflecting layer 140 and light source 120, to improve the catoptrical utilization rate of backlight module 100.
Please refer to Fig. 4, it shows the cut-away section schematic diagram according to the backlight module of the second embodiment of the present invention.Below only describe with regard to the different place between the present embodiment and first embodiment, its resemblance does not then repeat them here.Compared to first embodiment, the support unit 250 of second embodiment can be tabular, is directly used as support unit 250 by the dielectric layer 232 of circuit board 230.At this moment, conductive layer 231 is formed at a side of support unit 250, and the side relative with conductive layer 231 that reflecting layer 240 is arranged on support unit 250.Support unit 250 can be provided with several through holes 251, in order to hold and to be embedded light source 220.The packaging body 222 of light source 220 is arranged in the through hole 251 of support unit 250, and the electrode pin 223 of light source 220 is to stretch out packaging body 222, and electrically connect with conductive layer 231, the light-emitting area 221 of light source 220 flushes in the reflecting layer 240 reflecting surface, perhaps the difference in height between the light-emitting area 221 of the reflecting surface in reflecting layer 240 and light source 220 can for example be preferably less than 100 microns (μ m) less than 1 millimeter (mm).In the present embodiment, reflecting layer 240 can be reflecting plate or reflector plate, and perhaps, reflecting layer 240 also can be a reflectance coating, the side relative with conductive layer 231 that it can utilize highly reflective material directly to be coated with or be printed on support unit 250.Therefore, the backlight module 200 of present embodiment can utilize support unit 250, i.e. the collocation design of the dielectric layer of circuit board 230, and through hole 251 reduces the difference in height between the light-emitting area 221 of reflecting layer 240 and light source 220, to improve catoptrical utilization rate.
Please refer to Fig. 5, it shows the cut-away section schematic diagram according to the backlight module of the third embodiment of the present invention.Below only describe with regard to the different place between the present embodiment and first embodiment, its resemblance does not then repeat them here.In the present embodiment, backlight module 300 is the backlight module of side direction type light inlet, and it can comprise backboard 310, several light sources 320, circuit board 330, reflecting layer 340, support unit 350, blooming piece 360 and LGP 370.LGP 370 is arranged on the backboard 310, and light source 320 and circuit board 330 formed luminous lamp strips, and is arranged on a side of LGP 370, in order to luminous to LGP 370.Reflecting layer 340 be formed at light source 320 around, in order to the light of reflection source 320.Support unit 350 is formed between the conductive layer 331 and reflecting layer 340 of circuit board 330, in order to the difference in height between the light-emitting area 321 that reduces reflecting layer 330 and light source 320.Blooming piece 360 is arranged on the top of LGP 370, in order to improve the light uniformity or the brightness of being sent by LGP 370.
Please refer to Fig. 6, it shows the cut-away section schematic diagram according to the backlight module of the fourth embodiment of the present invention.Below only describe with regard to the different place between the present embodiment and first embodiment, its resemblance does not then repeat them here.Compared to first embodiment, the support unit 450 of the 4th embodiment can be tabular, and it is arranged on the circuit board 430.Support unit 450 can be provided with several through holes 451, in order to hold and to be embedded light source 420.The packaging body 422 of light source 420 is arranged in the through hole 451 of support unit 450, and the electrode pin 423 of light source 420 is arranged on the relative both sides of packaging body 422, and can utilize surface mount technology (SMT) to come to electrically connect with the conductive layer 431 of circuit board 430.Described electrode pin 423 for example can bend inwards, and electrically connects with circuit board 430, as shown in Figure 6.Again, electrode pin 423 also can be arranged on the both sides of light-emitting diode chip for backlight unit, and bending outwardly, to be electrically connected on the circuit board 430.The light-emitting area 421 of light source 420 can be substantially flush in the reflecting layer 440 reflecting surface.In the present embodiment, reflecting layer 440 can be reflecting plate, reflector plate or is coated on the reflectance coating on support unit 450 surfaces.Therefore, the backlight module 400 of present embodiment can utilize tabular support unit 450 to reduce difference in height between the light-emitting area 421 of reflecting layer 440 and light source 420, to improve catoptrical utilization rate.
From the above, backlight module of the present invention and display unit can utilize support unit to increase the height that is provided with in reflecting layer, since reduce difference in height between the light-emitting area of reflecting layer and light source, thereby can reduce the loss of light in the zone of this difference in height, and improve catoptrical utilization rate.
In sum; though the present invention discloses as above with preferred embodiment; but above preferred embodiment is not in order to restriction the present invention; those of ordinary skill in the art; without departing from the spirit and scope of the present invention; all can do various changes and retouching, so protection scope of the present invention is as the criterion with the scope that claim defines.
Claims (10)
1. backlight module, it is characterized in that: described backlight module comprises:
Circuit board;
Light source has light-emitting area, and described light source and described circuit board electrically connect;
The reflecting layer, be arranged on described light source around, the described light-emitting area of described reflecting layer and described light source is positioned at the same side of described circuit board; And
At least one support unit is arranged between described circuit board and the described reflecting layer, and supports described reflecting layer.
2. backlight module according to claim 1 is characterized in that: described support unit is a pillar cell.
3. backlight module according to claim 2 is characterized in that: described reflecting layer is reflecting plate or reflector plate.
4. backlight module according to claim 1 is characterized in that: described support unit is tabular, and is provided with several through holes, in order to be embedded described light source; Described circuit board is arranged on the relative both sides of described support unit with described reflecting layer.
5. backlight module according to claim 4 is characterized in that: described reflecting layer is reflecting plate, reflector plate or is coated on reflectance coating on the support unit.
6. according to claim 1,2,3,4 or 5 described backlight modules, it is characterized in that: described reflecting layer flush with the described light-emitting area of described light source or the described light-emitting area of described reflecting layer and described light source between described difference in height less than 1 millimeter.
7. backlight module, it comprises circuit board, light source and reflecting layer, and described light source has light-emitting area, and described light source and described circuit board electrically connect; It is characterized in that: described circuit board offers through hole, is used to be embedded described light source, and described reflecting layer is arranged on the described circuit board, and the described light-emitting area of described reflecting layer and described light source is positioned at the same side of described circuit board.
8. backlight module according to claim 7 is characterized in that: described reflecting layer is reflecting plate, reflector plate or the reflectance coating that is coated on circuit board surface.
9. according to claim 7 or 8 described backlight modules, it is characterized in that: described reflecting layer flush with the described light-emitting area of described light source or the described light-emitting area of described reflecting layer and described light source between described difference in height less than 1 millimeter.
10. display unit, it is characterized in that: described display unit comprises:
Display floater; And
Backlight module comprises:
Circuit board;
Light source has light-emitting area, and described light source is to electrically connect with described circuit board;
The reflecting layer, be arranged on described light source around, the described light-emitting area of described reflecting layer and described light source is positioned at the same side of described circuit board; And
At least one support unit is arranged between described circuit board and the described reflecting layer, and supports described reflecting layer.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010509564XA CN101988663A (en) | 2010-10-15 | 2010-10-15 | Backlight module and display device |
| US12/996,657 US20120092887A1 (en) | 2010-10-15 | 2010-11-23 | Backlight module and display apparatus |
| PCT/CN2010/079033 WO2012048488A1 (en) | 2010-10-15 | 2010-11-23 | Backlight module and display apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010509564XA CN101988663A (en) | 2010-10-15 | 2010-10-15 | Backlight module and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101988663A true CN101988663A (en) | 2011-03-23 |
Family
ID=43745343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010509564XA Pending CN101988663A (en) | 2010-10-15 | 2010-10-15 | Backlight module and display device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101988663A (en) |
| WO (1) | WO2012048488A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103883927A (en) * | 2012-12-19 | 2014-06-25 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
| CN105240714A (en) * | 2015-09-21 | 2016-01-13 | 京东方科技集团股份有限公司 | Light emitting diode light bar, back light source and display device |
| CN105444002A (en) * | 2011-04-04 | 2016-03-30 | Lg伊诺特有限公司 | Lighting apparatus |
| WO2018023489A1 (en) * | 2016-08-03 | 2018-02-08 | 袁志贤 | Led device capable of evenly reflecting light |
| CN109307954A (en) * | 2018-10-31 | 2019-02-05 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN113140151A (en) * | 2020-01-16 | 2021-07-20 | 群创光电股份有限公司 | Backlight module and display device |
| CN114724468A (en) * | 2021-01-04 | 2022-07-08 | 群创光电股份有限公司 | Display device |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI628494B (en) * | 2017-11-27 | 2018-07-01 | 瑞軒科技股份有限公司 | Direct type backlight module, display device and assembling method thereof |
| CN112015006B (en) * | 2020-09-14 | 2022-07-12 | 武汉华星光电技术有限公司 | Bendable backlight module and display panel |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105444002B (en) * | 2011-04-04 | 2019-05-31 | Lg伊诺特有限公司 | Lighting device |
| US11754877B2 (en) | 2011-04-04 | 2023-09-12 | Lg Innotek Co., Ltd. | Lighting apparatus |
| CN105444002A (en) * | 2011-04-04 | 2016-03-30 | Lg伊诺特有限公司 | Lighting apparatus |
| CN105549256A (en) * | 2011-04-04 | 2016-05-04 | Lg伊诺特有限公司 | Lighting apparatus |
| US11586069B2 (en) | 2011-04-04 | 2023-02-21 | Lg Innotek Co., Ltd. | Lighting apparatus |
| US11243428B2 (en) | 2011-04-04 | 2022-02-08 | Lg Innotek Co., Ltd. | Lighting apparatus |
| US9982849B2 (en) | 2011-04-04 | 2018-05-29 | Lg Innotek Co., Ltd. | Lighting apparatus |
| US10139054B2 (en) | 2011-04-04 | 2018-11-27 | Lg Innotek Co., Ltd. | Lighting apparatus |
| CN105549256B (en) * | 2011-04-04 | 2018-12-14 | Lg伊诺特有限公司 | Lighting device |
| US10877313B2 (en) | 2011-04-04 | 2020-12-29 | Lg Innotek Co., Ltd. | Lighting apparatus |
| CN103883927B (en) * | 2012-12-19 | 2017-12-26 | 深圳市中深光电有限公司 | Backlight module |
| CN103883927A (en) * | 2012-12-19 | 2014-06-25 | 鸿富锦精密工业（深圳）有限公司 | Backlight module |
| CN105240714A (en) * | 2015-09-21 | 2016-01-13 | 京东方科技集团股份有限公司 | Light emitting diode light bar, back light source and display device |
| WO2018023489A1 (en) * | 2016-08-03 | 2018-02-08 | 袁志贤 | Led device capable of evenly reflecting light |
| CN109307954A (en) * | 2018-10-31 | 2019-02-05 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN109307954B (en) * | 2018-10-31 | 2024-04-09 | 武汉华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN113140151A (en) * | 2020-01-16 | 2021-07-20 | 群创光电股份有限公司 | Backlight module and display device |
| CN114724468A (en) * | 2021-01-04 | 2022-07-08 | 群创光电股份有限公司 | Display device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012048488A1 (en) | 2012-04-19 |
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Application publication date: 20110323 |