CN2622734Y - Back light module - Google Patents
Back light module Download PDFInfo
- Publication number
- CN2622734Y CN2622734Y CN 03241579 CN03241579U CN2622734Y CN 2622734 Y CN2622734 Y CN 2622734Y CN 03241579 CN03241579 CN 03241579 CN 03241579 U CN03241579 U CN 03241579U CN 2622734 Y CN2622734 Y CN 2622734Y
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- CN
- China
- Prior art keywords
- fluorescent tube
- light
- glue frame
- fixing glue
- backlight module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model discloses a back light module, comprising a light-guide board, a light tube, a lower fixing glue frame and an upper fixing glue frame. The light-guide board comprises a light-emitting face. The light tube is arranged at the side of the light-guide board; and the light provided by the light tube can be sent into the light-guide board, and then be sent by the light-emitting face. The lower fixing glue frame is suitable for supporting the light-guide board and the tube, and a plurality of heat-radiating holes are arranged on the fixing glue frame adjacent to the light tube. The upper glue frame is arranged on the lower fixing glue frame, and the upper fixing glue frame is provided with a window to expose the light-emitting face of the light-guide board. A plurality of heat-radiating holes are arranged on the fixing glue frame to remove the heat produced by longtime use of light tube.
Description
Technical field
The utility model relates to a kind of backlight module (Back Light Module, be called for short B/L), the particularly a kind of backlight module that can effectively get rid of the thermal source that fluorescent tube produced under long-time the use.
Background technology
At improving rapidly of multimedia society, be indebted to the tremendous progress of semiconductor subassembly or man-machine display device mostly.With regard to display, (Cathode RayTube CRT) because of having excellent display quality and its economy, monopolizes monitor market in recent years to cathode-ray tube (CRT) always.Yet, operate the environment of most terminating machine/display equipments on the table for the individual, or with the incision of the viewpoint of environmental protection, if predicted with the trend of saving the energy, cathode-ray tube (CRT) is because of still existing a lot of problems in space utilization and the energy resource consumption, and can't effectively provide solution for the demand of light, thin, short, little and low consumpting power.Therefore, have that high image quality, space utilization efficient add, (liquid crystal display LCD) becomes the main flow in market to the LCD of low consumpting power, advantageous characteristic such as radiationless gradually.
LCD (LCD) mainly is made of a liquid crystal panel and a backlight module.It should be noted that because the liquid crystal itself that is injected in the liquid crystal panel can be not luminous, therefore, must see through the area source that backlight module provided and light liquid crystal panel, so that LCD reaches the effect of demonstration, so learn the importance of backlight module in LCD from above-mentioned.
Fig. 1 represents a kind of structural representation of known backlit module.See also shown in Figure 1, backlight module 100 by a light guide plate (Light Guide Panel, LGP) 110, one fluorescent tube (Lamp) 120, a reflex housing (Holder) 130, a blooming piece (Opticalfilm) 140, once fixing glue frame (upper frame) 160 constitutes on fixing glue frame (the bottom frame) 150 and.Wherein, light guide plate 110 has a light entrance face 112, one a smooth diffusingsurface 114 and a light-emitting face 116.Fluorescent tube 120 is disposed at light entrance face 112 sides of light guide plate 110, and the light that fluorescent tube 120 is provided can be incident to by the light entrance face 112 of light guide plate 110 in the light guide plate 110, and after the scattering and reflection of the light diffusingsurface 114 of process light guide plate 110, by light-emitting face 116 outgoing.So know that as available from the above the effect of light guide plate 110 is the linear light that fluorescent tube 120 is sent is converted to the kenel of area source, obtain even brightness light in order to guarantee the liquid crystal panel (not shown).
As shown in Figure 1, it is other that reflex housing 130 is disposed at fluorescent tube 120, and cover this fluorescent tube 120, concentrates direction irradiation towards the light entrance face 112 of light guide plate 110 in order to the light that fluorescent tube 120 is sent.Blooming piece 140 is disposed on the light-emitting face 116 of light guide plate 110, is used for improving representing of backlight module 100 briliancy.
As shown in Figure 1, following fixing glue frame 150 is in order to carry above-mentioned light guide plate 110, fluorescent tube 120 and reflex housing 130, and have a plurality of projections 154 on the sidewall 152 of following fixing glue frame 150, have a plurality of fastening pieces 162 and go up fixing glue frame 160 corresponding to above-mentioned projection 154, and has an opening 164 on the fastening piece 162, this opening 164 is suitable for being fastened on the above-mentioned projection 154, interfixes with following fixing glue frame 150 so that go up fixing glue frame 160.In addition, last fixing glue frame 160 has a window 166, in order to expose the light-emitting face 116 of light guide plate 110, makes the area source by light-emitting face 116 outgoing, can expose to the liquid crystal panel (not shown) that is disposed at fixing glue frame 160 tops.So learn by above-mentioned, by of the combination of last fixing glue frame 160 with following fixing glue frame 150, and above-mentioned light guide plate 110, fluorescent tube 120 and reflex housing 130 is fixing, make backlight module 100 reach incorporate purpose.
It should be noted that, because last fixing glue frame promptly forms an airtight space after making up mutually with following fixing glue frame, the heat that fluorescent tube is produced under long-time the use can't instantaneously be discharged, to cause fluorescent tube Yin Gaore thus and burnt, and then shorten the serviceable life of fluorescent tube.In addition, the heat that fluorescent tube produced is stranded between fixing glue frame and the following fixing glue frame, also can influence the arrangement configuration of its molecule of blooming piece, make the area source of backlight module outgoing present unsure state, for example produce the phenomenon of flicker (flare), and cause the display effect of LCD not good.
Summary of the invention
Therefore, the purpose of this utility model is providing a kind of backlight module exactly, can effectively get rid of the thermal source that fluorescent tube is produced under long-time the use, and avoids blooming piece because of being subjected to this thermal source simultaneously, and causes the area source of backlight module to produce the phenomenon of glimmering.
Based on above-mentioned purpose, the utility model proposes a kind of backlight module, this backlight module is mainly by a light guide plate, at least one fluorescent tube, once the fixing glue frame constitutes on the fixing glue frame and.Wherein, light guide plate has a light-emitting face; Fluorescent tube is disposed at by the light guide plate, and the light that fluorescent tube provided can be incident in the light guide plate, and by the light-emitting face outgoing; Following fixing glue frame is suitable for carrying light guide plate and fluorescent tube, and down the fixing glue frame is adjacent to the fluorescent tube place and has a plurality of louvres; Last fixing glue frame is disposed at down on the fixing glue frame, and upward the fixing glue frame has a window, in order to expose the light-emitting face of light guide plate.
Described according to preferred embodiment of the present utility model, above-mentioned these louvres are positioned at down, and the fixing glue frame is adjacent on the sidewall of fluorescent tube, or be positioned at down that the fixing glue frame is adjacent on the diapire of fluorescent tube, or be positioned at simultaneously on the sidewall that fixing glue frame down is adjacent to fluorescent tube and on the diapire.In addition, the orientation of these louvres is parallel to the axis direction of fluorescent tube, and the shape of these louvres for example is rectangle, circle or oval.
The utility model disposes a plurality of louvres at the fluorescent tube place that is adjacent to of following fixing glue frame, therefore, the thermal source that fluorescent tube is produced under long-time the use, can discharge by these louvres, with the serviceable life of prolonging lamp tube, and avoid blooming piece because of being subjected to the thermal source that fluorescent tube produces simultaneously, and cause the area source of backlight module outgoing to produce the phenomenon of flicker.
Description of drawings
Above-mentioned and other purpose of the present utility model, feature and advantage describe a preferred embodiment in detail below in conjunction with accompanying drawing, so that can become apparent.
Fig. 1 is the structural representation of a kind of known backlit module of expression;
Fig. 2 is the structural representation of expression according to the backlight module of the utility model preferred embodiment;
Fig. 3 is the schematic perspective view of expression according to the backlight module of the utility model preferred embodiment;
Fig. 4 is the cut-open view that expression is done according to the section A of Fig. 3;
Fig. 5 A～5B represents according to the single fluorescent tube of the utility model preferred embodiment and the arrangement synoptic diagram of incidence surface; And
Fig. 6 A～6C represents according to the many fluorescent tubes of the utility model preferred embodiment and the arrangement synoptic diagram of incidence surface.
Embodiment
Fig. 2 represents the structural representation according to the backlight module of the utility model preferred embodiment.Please refer to shown in Figure 2ly, the backlight module 200 of present embodiment is mainly by a light guide plate 210, a fluorescent tube 220, a reflex housing 230, a blooming piece 240, a reflector plate 250, once fixing glue frame 270 constitutes on the fixing glue frame 260 and.Wherein, light guide plate 210 has a light entrance face 212, one a smooth diffusingsurface 214 and a light-emitting face 216, and has a plurality of V-arrangement indentations or a plurality of concave point (not shown) on this light diffusingsurface 214.Fluorescent tube 220 for example is a strip fluorescent tube, the light entrance face 212 that is disposed at light guide plate 210 is other, and the light that this fluorescent tube 220 is provided can be incident to by the light entrance face 212 of light guide plate 210 in the light guide plate 210, and after the scattering and reflection of the light diffusingsurface 214 of process light guide plate 210, by light-emitting face 216 outgoing.So know that as available from the above the effect of light guide plate 210 is the linear light that fluorescent tube 220 is sent is converted to the kenel of area source, obtain even brightness light in order to guarantee the liquid crystal panel (not shown).
As shown in Figure 2, it is other that reflex housing 230 is disposed at fluorescent tube 220, and cover this fluorescent tube 220, concentrates direction irradiation towards the light entrance face 212 of light guide plate 210 in order to the light that fluorescent tube 220 is sent.Blooming piece 240 is disposed on the light-emitting face 216 of light guide plate 210, is used for improving representing of backlight module 200 briliancy.Reflector plate 250 is disposed at the bottom of light guide plate 210, in order to the reflection and the diffusion effect of the light diffusingsurface 214 of promoting light guide plate 210, and then improves the light utilization efficiency of backlight module 200.By the configuration of above-mentioned reflex housing 230, blooming piece 240 and reflector plate 250, so that the area source that backlight module 200 is provided more becomes perfect, to satisfy the briliancy demand of high LCD of resolving.
As shown in Figure 2, following fixing glue frame 260 is in order to carry above-mentioned light guide plate 210, fluorescent tube 220 and reflex housing 230, and have a plurality of projections 264 on the sidewall 262 of following fixing glue frame 260, have a plurality of fastening pieces 272 and go up fixing glue frame 270 corresponding to above-mentioned projection 264, and has an opening 274 on the fastening piece 272, this opening 274 is suitable for being fastened on the above-mentioned projection 264, so that upward fixing glue frame 270 interfixes with following fixing glue frame 260, and reaches the purpose of close-fitting.In addition, have a lead-in chamfered 264a on the projection 264, go up in this lead-in chamfered 264a in order to guiding fastening piece 272 and move, make fastening piece 272 when fastening, the opening 274 on the fastening piece 272 is easier to be fastened on the projection 264.In addition, last fixing glue frame 270 has a window 276, in order to expose the light-emitting face 216 of light guide plate 210, makes the area source by light-emitting face 216 outgoing, can expose to the liquid crystal panel (not shown) that is disposed at fixing glue frame 270 tops.
So learn by above-mentioned, by of the combination of last fixing glue frame 270, and members such as above-mentioned light guide plate 210, fluorescent tube 220 and reflex housing 230 are fixed with following fixing glue frame 260, make backlight module 200 reach incorporate purpose.
Fig. 3 represents the schematic perspective view according to the backlight module of the utility model preferred embodiment.Fig. 4 represents the cut-open view that the section A according to Fig. 3 is done.Please consult Fig. 3, shown in Figure 4 jointly, on the sidewall 262 that is adjacent to fluorescent tube 220 places, dispose a plurality of louvre 262a at following fixing glue frame 260, and be adjacent on the diapire 266 of fluorescent tube 220 at following fixing glue frame 260 and dispose a plurality of louvre 266a, the orientation of these louvres 262a, 266a is parallel to the axis direction of fluorescent tube 220, and the shape of these louvres 266 can for example be shapes such as rectangle, circle or ellipse.Configuration by these louvres 262a, 266a, so that the space of going up between fixing glue frame 270 and the following fixing glue frame 260 can be in communication with the outside, thus, the thermal source that fluorescent tube 220 is produced under long-time the use, can discharge by these louvres 262a, 266a place, and then the serviceable life of prolonging lamp tube 220, and avoid blooming piece 240 simultaneously because of being subjected to the thermal source that fluorescent tube 220 produces, and the area source that causes backlight module 200 outgoing produces the phenomenon of flicker, so can promote the display quality of LCD.
Fig. 5 A～5B represents according to the single fluorescent tube of the utility model preferred embodiment and the arrangement synoptic diagram of incidence surface.Fluorescent tube 220 in above-mentioned Fig. 2～4 is an example with the strip fluorescent tube in single fluorescent tube kenel, but those skilled in the art should know by inference, the utility model is under single fluorescent tube kenel, its fluorescent tube also can for example be L shaped fluorescent tube 300 or U-shaped fluorescent tube 400, see also shown in Fig. 5 A～5B, wherein, if fluorescent tube is L shaped fluorescent tube 300,210 of light guide plate design two light entrance faces 212 and two light diffusingsurface (not shown)s, and this L shaped fluorescent tube 300 is disposed corresponding to these two light entrance faces 212.If fluorescent tube is a U-shaped fluorescent tube 400,210 of light guide plate design three light entrance faces 212 and three light diffusingsurface (not shown)s, and this U-shaped fluorescent tube 400 is disposed corresponding to these three light entrance faces 212.
Fig. 6 A～6C represents according to the many fluorescent tubes of the utility model preferred embodiment and the arrangement synoptic diagram of incidence surface.See also Fig. 6 A～6C, the fluorescent tube in the present embodiment also can be the kenel of many fluorescent tubes except the kenel that can be single fluorescent tube, for example can arrange in pairs or groups mutually or arrange in pairs or groups mutually with a strip fluorescent tube 220 and a L shaped fluorescent tube 300 by two to three strip fluorescent tubes 220.As shown in Figure 6A, if arrange in pairs or groups mutually with two strip fluorescent tubes 220,210 of light guide plate design two light entrance faces 212 and two light diffusingsurface (not shown)s, and this two strips fluorescent tube 220 is disposed corresponding to these two light entrance faces 212.Shown in Fig. 6 B and Fig. 6 C, if arrange in pairs or groups mutually or arrange in pairs or groups mutually with a strip fluorescent tube 220 and a L shaped fluorescent tube 300 with three strip fluorescent tubes 220,210 of light guide plate design three light entrance faces 212 and three light diffusingsurface (not shown)s, and these fluorescent tubes are disposed corresponding to these three light entrance faces 212.
In addition, it should be noted that, louvre in the present embodiment is disposed at down the fixing glue frame simultaneously and is adjacent on the sidewall of fluorescent tube and on the diapire, but those skilled in the art should know, the mode of its configuration of louvre of the present utility model, and non-limiting this kind configuration mode can only be disposed at down louvre the fixing glue frame and be adjacent on the sidewall of fluorescent tube, or only louvre is disposed at down the fixing glue frame and is adjacent on the diapire of fluorescent tube, can reach the effect of heat radiation equally.
Generally speaking, no matter the fluorescent tube that backlight module of the present utility model inside is disposed is the kenel of single fluorescent tube or many fluorescent tubes, it is adjacent to a plurality of louvres of configuration on the sidewall of fluorescent tube or the diapire at following fixing glue frame, and the thermal source that fluorescent tube is produced under long-time the use by these louvres is discharged.
In sum, backlight module of the present utility model has following advantage at least:
1. backlight module of the present utility model can effectively be got rid of the thermal source that fluorescent tube is produced under long-time the use, so can increase the serviceable life of fluorescent tube.
2. backlight module of the present utility model can effectively be got rid of the thermal source that fluorescent tube is produced under long-time the use, avoiding blooming piece because of being subjected to this thermal source, and cause the area source of backlight module to produce the phenomenon of glimmering, so can promote the display effect of LCD.
Though the utility model discloses as above with a preferred embodiment; right its is not in order to limit the utility model; those skilled in the art is not in breaking away from spirit and scope of the present utility model; when doing a little change and retouching, therefore protection domain of the present utility model is with being as the criterion of limiting in claims.
Claims (10)
1. backlight module is characterized in that it comprises:
One light guide plate, it has a light-emitting face;
At least one fluorescent tube, it is disposed at by this light guide plate, and the light that this fluorescent tube provided is incident in this light guide plate, and by this light-emitting face outgoing;
Fixing glue frame once, it is suitable for carrying this light guide plate and this fluorescent tube, and this time fixing glue frame is adjacent to this fluorescent tube place and has a plurality of louvres; And
Fixing glue frame on one, it is disposed on this time fixing glue frame, and upward the fixing glue frame has a window, to expose this light-emitting face.
2. backlight module as claimed in claim 1 is characterized in that, the orientation of described louvre is parallel to the axis direction of this fluorescent tube.
3. backlight module as claimed in claim 1 is characterized in that, described louvre is positioned at this time fixing glue frame and is adjacent on the sidewall of this fluorescent tube.
4. backlight module as claimed in claim 1 is characterized in that, described louvre is positioned at this time fixing glue frame and is adjacent on the diapire of this fluorescent tube.
5. backlight module as claimed in claim 1 is characterized in that, described louvre is positioned at this time fixing glue frame and is adjacent on the sidewall of this fluorescent tube, and is adjacent on the diapire of this fluorescent tube.
6. backlight module as claimed in claim 1 is characterized in that, the shape of described louvre comprises rectangle, circle and oval.
7. backlight module as claimed in claim 1 is characterized in that, this light guide plate also has a light entrance face and a smooth diffusingsurface, and this fluorescent tube is a strip fluorescent tube, and this strip fluorescent tube is corresponding to this light entrance face configuration.
8. backlight module as claimed in claim 1 is characterized in that, this light guide plate also has a plurality of light entrance faces and a plurality of smooth diffusingsurface, and this fluorescent tube is a L shaped fluorescent tube, and this L shaped fluorescent tube disposes corresponding to described light entrance face.
9. backlight module as claimed in claim 1 is characterized in that, this light guide plate also has a plurality of light entrance faces and a plurality of smooth diffusingsurface, and this fluorescent tube is a U-shaped fluorescent tube, and this U-shaped fluorescent tube disposes corresponding to described light entrance face.
10. backlight module as claimed in claim 1, it is characterized in that, the projection that the sidewall of this time fixing glue frame also has a plurality of band lead-in chamfered, also have a plurality of fastening pieces and go up the fixing glue frame corresponding to described projection, each described fastening piece has an opening, and this opening is suitable for being fastened on described projection on one of them.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03241579 CN2622734Y (en) | 2003-04-16 | 2003-04-16 | Back light module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03241579 CN2622734Y (en) | 2003-04-16 | 2003-04-16 | Back light module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2622734Y true CN2622734Y (en) | 2004-06-30 |
Family
ID=34250368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03241579 Expired - Lifetime CN2622734Y (en) | 2003-04-16 | 2003-04-16 | Back light module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2622734Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013071570A1 (en) * | 2011-11-18 | 2013-05-23 | 深圳市华星光电技术有限公司 | Flat-panel display device, stereo display device, and plasma display device |
| WO2013071568A1 (en) * | 2011-11-18 | 2013-05-23 | 深圳市华星光电技术有限公司 | Back frame of flat-panel display device, backlight system, and flat liquid crystal display device |
| US8908120B2 (en) | 2011-11-18 | 2014-12-09 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Back frame of flat panel display device, backlight system, and flat liquid crystal display device |
| CN107613714A (en) * | 2017-09-22 | 2018-01-19 | 合肥通泰光电科技有限公司 | A kind of car coat type radiating display screen rubber frame and its cassette preparation method |
-
2003
- 2003-04-16 CN CN 03241579 patent/CN2622734Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013071570A1 (en) * | 2011-11-18 | 2013-05-23 | 深圳市华星光电技术有限公司 | Flat-panel display device, stereo display device, and plasma display device |
| WO2013071568A1 (en) * | 2011-11-18 | 2013-05-23 | 深圳市华星光电技术有限公司 | Back frame of flat-panel display device, backlight system, and flat liquid crystal display device |
| US8908120B2 (en) | 2011-11-18 | 2014-12-09 | Shenzhen China Star Optoelectronics Technology Co., Ltd. | Back frame of flat panel display device, backlight system, and flat liquid crystal display device |
| CN107613714A (en) * | 2017-09-22 | 2018-01-19 | 合肥通泰光电科技有限公司 | A kind of car coat type radiating display screen rubber frame and its cassette preparation method |
| CN107613714B (en) * | 2017-09-22 | 2023-04-11 | 合肥通泰光电科技有限公司 | Clamped heat dissipation display screen rubber frame and clamping manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: YOUDA PHOTOELECTRIC CO., LTD. Free format text: FORMER NAME OR ADDRESS: GUANGHUI ELECTRONIC CO., LTD. |
|
| CP03 | Change of name, title or address |
Address after: Postcode of Taiwan, Hsinchu, china: Patentee after: AU Optronics Corporation Address before: Postcode of Taiwan, china: Patentee before: Guanghui Electronic Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130416 Granted publication date: 20040630 |