CN101082392A - Back light source device - Google Patents
Back light source device Download PDFInfo
- Publication number
- CN101082392A CN101082392A CNA2006100899817A CN200610089981A CN101082392A CN 101082392 A CN101082392 A CN 101082392A CN A2006100899817 A CNA2006100899817 A CN A2006100899817A CN 200610089981 A CN200610089981 A CN 200610089981A CN 101082392 A CN101082392 A CN 101082392A
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- substrate
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- pliability
- lgp
- board
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Abstract
The invention relates to a back light source device of plane display which contains substrate which has two terminals of its both sides; light plate with has a into-light face and a out-light face both are under it; pliability plate which is a terminal electrical connecting to substrate; first circuit board which is another terminal electrical connecting to substrate and luminescence element set on pliability plate. The light source of luminescence element incident to into-light face and extraction from out-light face. The invention put luminescence element on pliability plate and circuit board, makes power supply needed by luminescence element transfer via line on glass panel by pliability plate or circuit board. The transfer without applied power source can simplified module design and reduce the production of short circuit. Meanwhile, using the deflection characteristic of pliability plate can reduce thickness of back light source device.
Description
Technical field
The present invention relates to a kind of display, particularly relate to a kind of backlight arrangement of flat-panel screens.
Background technology
Backlight module (backlight module) is a flat-panel screens, a LCD (liquid crystal display for example, LCD) one of key components and parts of panel, because liquid crystal itself is not luminous, the function of backlight module promptly is well-off brightness and the light source that is evenly distributed, and makes its normally show image.
Lifting along with the LCD manufacturing technology, under the trend of large scale and low price, the market demands that backlight module also need be considered lightweight, slimming, low power consumption, high brightness and reduce cost, for remaining on the not competitiveness in Come market, the backlight module that exploitation and design are novel and the new manufacturing technology of ejection formation have become an important problem.
Prior art proposes a kind of relative configurations of light emitting diode matrix terminal of backlight liquid crystal display module, as shown in Figure 1, the main composition element has LGP 10, light emitting diode matrix 12, printed circuit board (PCB) 14, electrode 16, terminal wire 18, terminal tip 20 etc., utilize contacting of terminal most advanced and sophisticated 20 and electrode 16, with electric power via being transmitted on the light emitting diode matrix 12 on the printed circuit board (PCB) 14.Yet in above-mentioned structure, if the surface corrosion of contact or have the doubt that is short-circuited when having particle to exist.In addition, on Z-direction space (thickness), need have certain space to hold bendable printed circuit board (PCB) 14, as soft board (flexible print circuit, FPC) or winding carrier structure dress (tape carrier package, so be not easy to reach the requirement of slimming on the thickness TCP).
Another kind of prior art pliability LED backlight circuit " Flexible LEDBacklighting Circuit ", as shown in Figure 2, utilize the pliability speciality of soft board 22, light emitting diode 24 is utilized surface mounting technology (surface mount technology, SMT) be arranged on the soft board 22, and soft board 22 is provided with three side bending 90 degree of light emitting diode 24, by LGP end face light inlet.Yet this kind backlight circuit is not good because of the thermal diffusivity of soft board 22, and because of there being so big soft board 22 areas, radiating effect more has the doubt of having a greatly reduced quality, and what is more, soft board 22 required areas are big, and required cost also can increase.
Summary of the invention
Produce in order to reduce problem of short-circuit, one of purpose of the present invention is to provide a kind of backlight arrangement.Utilize board with pliability that light-emitting component and substrate junction are lumped together, provide light-emitting component required power supply, so can avoid the anxiety of short circuit, and not need additional power source by the two-terminal portion of substrate.
Therefore one of purpose of the present invention is to provide a kind of backlight arrangement, need not give the space of general board with pliability bending, but makes the module thickness slimming.
For making cost descend, one of purpose of the present invention is to provide a kind of backlight arrangement, and the material that utilizes this kind of board with pliability comparatively to save reducing cost, and utilizes board with pliability to reach the effect of preferable flexibility.
One of purpose of the present invention is to provide a kind of backlight arrangement, and its utilization is arranged on the board with pliability by the good printed circuit board (PCB) that substrate constituted of thermal diffusivity, in order to improve radiating effect, makes the light-emitting component temperature reduce.
For achieving the above object, one embodiment of the invention provide a kind of backlight arrangement, comprising: a substrate, and it has the both sides that two-terminal lays respectively at substrate; One LGP, it has an incidence surface and an exiting surface, and is positioned at the substrate below; One board with pliability is electrically connected at one of them terminal of substrate; One first circuit board is electrically connected at the another terminal of substrate: an and light-emitting component, be arranged on the board with pliability, and a light source of light-emitting component is incident to the incidence surface of LGP, and by the exiting surface bright dipping of LGP.
Description of drawings
Fig. 1 is a prior art, the cross-sectional schematic of the light emitting diode matrix terminal of LCD backlight.
Fig. 2 is another prior art, the vertical view of flexible light emitting diode (LED) backlight circuit.
Fig. 3 is the cross-sectional schematic of one embodiment of the invention backlight arrangement.
Fig. 4 is the cross-sectional schematic of another embodiment of the present invention backlight arrangement.
Symbol description among the figure
10,38 LGPs
12 light emitting diode matrixs
14 printed circuit board (PCB)s
16 electrodes
18 terminal wires
20 terminal tips
22 soft boards
24 light emitting diodes
28,30 face glass
32,34 portion of terminal
36 flexible circuit boards
40 incidence surfaces
41 exiting surfaces
42,62 board with pliability
44,66 light-emitting components
50 diffuser plates
52 reflecting plates
The specific embodiment
Figure 3 shows that the cross-sectional schematic of the backlight arrangement that one embodiment of the invention propose.The two substrates of backlight arrangement is oppositely arranged and liquid crystal layer (not showing on the figure) filling in wherein, in this embodiment, two substrates is the face glass 28,30 of display panels.In an embodiment, compared to face glass 28, a color screen panel for example, face glass 30, thin film transistor (TFT) (thin film transistor for example, TFT) panel, because size is bigger, therefore definable goes out the two opposite sides that two portion of terminal that expose 32,34 are positioned at face glass 30 on face glass 30.In this embodiment, a board with pliability 42, a flexible circuit board for example is electrically connected at one of them terminal of glass substrate 30, and for example portion of terminal 32; And a first circuit board, for example strip-like carrier (tape carrier) or flexible circuit board 36, then be electrically connected at the another terminal of glass substrate 30, for example portion of terminal 34, and then source drive IC and grid drive IC are arranged at strip-like carrier or bendable printed circuit board (PCB) 36 to electrically connect face glass 30.One LGP 38, have an incidence surface 40 and an exiting surface 41, and LGP 38 is arranged at the below of substrate, face glass 30 belows for example, and wherein the purposes of LGP 38 is directed at exiting surface 41 to provide the face glass on it 28,30 incident light sources with light source by its incidence surface 40.Then, a light-emitting component 44 is arranged on the board with pliability 42, and the characteristic of utilizing board with pliability 42 to bend arbitrarily causes a light source of light-emitting component 44 to be incident to the incidence surface 40 of LGP 38, again by exiting surface 41 bright dippings of LGP 38.In this embodiment, above LGP 38, more be provided with an optics matrix, for example diffuser plate 50, cause light source can evenly diffuse on the face glass 28,30.In an embodiment, can utilize real packing technique, for example outer pin is followed technology, and (outer lead bounding OLB), can be fixed in portion of terminal 32 with board with pliability 42; And light-emitting component 44, for example light emitting diode then utilizes surperficial adhesion technology to be arranged on the board with pliability 42, makes board with pliability 42 be electrically connected to face glass 30 by portion of terminal 32.According to above-mentioned, the drive circuit of light-emitting component 44 can design on flexible circuit board 36 or other place on the board with pliability 42, by the circuit of face glass 30 upper terminal portions 32, portion of terminal 34 light-emitting component 44 required power supplys are passed on via portion of terminal 32 again, make light-emitting component 44 to obtain required power supply from face glass 30, so not only do not have the anxiety of short circuit, can simplify the backlight module design yet.What is more, utilize board with pliability 42 to electrically connect and fixing light-emitting component 44, can reduce cost of manufacture.
Fig. 4 is the cross-sectional schematic of the backlight arrangement that another embodiment of the present invention proposed.Be that with the different part of the embodiment of Fig. 3 light-emitting component 66 is electrically connected on the second circuit board, for example on aluminium base 64 or the ceramic substrate, is fixed in second circuit board on the board with pliability 62 again.According to above-mentioned, light-emitting component 66 passes through second circuit board, for example aluminium base 64, board with pliability 62, portion of terminal 32 are electrically connected to face glass 30, cause light-emitting component 66 to obtain required power supply, and light-emitting component 66 can be by reaching its radiating requirements by good second circuit boards that material constitutes of thermal diffusivity such as aluminium base 66 or ceramic substrates from the portion of terminal on the face glass 30 32.In this embodiment, for increasing the optics briliancy of backlight arrangement, more can the optics matrix be set in LGP 38 belows, for example reflecting plate 52, the untapped light source that reflects LGP 38 is originally reclaimed again reflex to LGP 38, to improve picture brightness.According to the backlight arrangement that spirit of the present invention proposed, utilize surface mounting technology to be contained on board with pliability or the circuit board in fact light-emitting component, again board with pliability or the real packing technique of circuit board utilization are fixed on the face glass, and the needed power supply of light-emitting component just utilizes the circuit on the portion of terminal of face glass to transmit, therefore do not need additional power source, can simplify modular design.Simultaneously, by the characteristic of board with pliability deflection, with the minimizing module thickness, and comparatively saving of pliability material use, can significantly reduce cost.Moreover, if light-emitting component is arranged on the printed circuit board (PCB) that utilizes the good substrate formation of thermal diffusivity, can keep good heat radiating function, avoid the light-emitting component temperature too high.
Above-described embodiment only is explanation technological thought of the present invention and characteristics, its purpose makes the personage who has the knack of this skill can understand content of the present invention and is implementing according to this, when can not with qualification claim of the present invention, promptly the equalization of doing according to disclosed spirit generally changes or modifies, and must be encompassed in the claim of the present invention.
Claims (13)
1. backlight arrangement comprises:
One substrate, it has the below that two-terminal lays respectively at this substrate;
One LGP, it has an incidence surface and an exiting surface, and is positioned at the below of this substrate;
One board with pliability is electrically connected at one of them terminal of this substrate;
One first circuit board is electrically connected at the another terminal of this substrate; And
One light-emitting component is arranged on this flexible base plate, and a light source of this light-emitting component is incident to this incidence surface of this LGP, and by this exiting surface bright dipping of this LGP.
2. backlight arrangement as claimed in claim 1, wherein this substrate is the face glass of display panels.
3. backlight arrangement as claimed in claim 1, wherein this light-emitting component is a light emitting diode.
4. backlight arrangement as claimed in claim 1, wherein this board with pliability is a flexible circuit board.
5. backlight arrangement as claimed in claim 1, wherein this LGP top more is provided with a diffuser plate.
6. backlight arrangement as claimed in claim 1, wherein this LGP below more is provided with a reflecting plate.
7. a backlight arrangement comprises:
One substrate, it has the below that two-terminal lays respectively at this substrate;
One LGP, it has an incidence surface and an exiting surface, and is positioned at the below of this substrate;
One board with pliability is electrically connected at one of them terminal of this substrate;
One first circuit board is electrically connected at the another terminal of this substrate;
One second circuit board is electrically connected at this board with pliability; And
One light-emitting component is arranged on this flexible base plate, and a light source of this light-emitting component is incident to this incidence surface of this LGP, and by this exiting surface bright dipping of this LGP.
8. backlight arrangement as claimed in claim 7, wherein this substrate is the face glass of display panels.
9. backlight arrangement as claimed in claim 7, wherein this light-emitting component is a light emitting diode.
10. backlight arrangement as claimed in claim 7, wherein this board with pliability is a flexible circuit board.
11. backlight arrangement as claimed in claim 7, wherein this LGP top more is provided with a diffuser plate.
12. backlight arrangement as claimed in claim 7, wherein this LGP below more is provided with a reflecting plate.
13. backlight arrangement as claimed in claim 7, wherein this second substrate is aluminium base or ceramic substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100899817A CN101082392A (en) | 2006-05-30 | 2006-05-30 | Back light source device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100899817A CN101082392A (en) | 2006-05-30 | 2006-05-30 | Back light source device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101082392A true CN101082392A (en) | 2007-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100899817A Pending CN101082392A (en) | 2006-05-30 | 2006-05-30 | Back light source device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101082392A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865384A (en) * | 2010-06-04 | 2010-10-20 | 上海向隆电子科技有限公司 | Luminous device |
| CN103353685A (en) * | 2013-06-28 | 2013-10-16 | 深圳市艾卓尔泰科技开发有限公司 | LCD (liquid crystal display) |
| CN104935694A (en) * | 2015-06-15 | 2015-09-23 | 上海鼎讯电子有限公司 | Mobile terminal |
| WO2015180195A1 (en) * | 2014-05-29 | 2015-12-03 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN106205376A (en) * | 2015-04-02 | 2016-12-07 | 立景光电股份有限公司 | Display device |
-
2006
- 2006-05-30 CN CNA2006100899817A patent/CN101082392A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101865384A (en) * | 2010-06-04 | 2010-10-20 | 上海向隆电子科技有限公司 | Luminous device |
| CN101865384B (en) * | 2010-06-04 | 2012-11-21 | 上海向隆电子科技有限公司 | Luminous device |
| CN103353685A (en) * | 2013-06-28 | 2013-10-16 | 深圳市艾卓尔泰科技开发有限公司 | LCD (liquid crystal display) |
| WO2015180195A1 (en) * | 2014-05-29 | 2015-12-03 | 深圳市华星光电技术有限公司 | Backlight module and liquid crystal display |
| CN106205376A (en) * | 2015-04-02 | 2016-12-07 | 立景光电股份有限公司 | Display device |
| CN106205376B (en) * | 2015-04-02 | 2019-04-30 | 立景光电股份有限公司 | Display device |
| CN104935694A (en) * | 2015-06-15 | 2015-09-23 | 上海鼎讯电子有限公司 | Mobile terminal |
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