CN1427282B - Fixed frame used on back lighting module - Google Patents
Fixed frame used on back lighting module Download PDFInfo
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- CN1427282B CN1427282B CN 01144417 CN01144417A CN1427282B CN 1427282 B CN1427282 B CN 1427282B CN 01144417 CN01144417 CN 01144417 CN 01144417 A CN01144417 A CN 01144417A CN 1427282 B CN1427282 B CN 1427282B
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- fixed frame
- contact
- inner edge
- light
- edge surface
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Abstract
A frame for fixing the back light module consisting of light source, light guide plate, at least one membrane, and a fixing frame is disclosed. Said fixing frame is composed of upper and lower fixingparts. The upper fixing part comprises a mainb ody of frame and the membrane fixing rib whose internal edge has a dark light absorbing layer for preventing light reflection.
Description
Technical field
The present invention relates to a kind of back lighting module, in detail, is the fixed frame that is used for the LCD back lighting module about a kind of.
Background technology
Along with PC, laptop and the various communication apparatus demand thin in light weight, volume, make it follow the demand of LCD also day by day to increase, typical liquid crystal consists predominantly of framework, liquid crystal panel (LCD Panel) and back lighting module (Back Light Unit), because of liquid crystal panel itself can't be luminous, so need back lighting module to provide liquid crystal panel enough incident lights, therefore, the back lighting module design also becomes more and more important.
With reference to figure 1, for date of declaration is the United States Patent (USP) the 5th, 966 on October 12nd, 1999,191A number LCD diagrammatic cross-section.Wherein back lighting module comprises a diaphragm group 2, an optical plate 3 reaches at least one end tool one light source 4 of this optical plate.This diaphragm group 2 comprises screening glass 21; prismatic lens 22; diaphragms such as diffusion sheet 23 and/or reflector plate 24; this diaphragm group 2 has an end face and an edge; whole back lighting module is fixed with a fixed frame; this fixed frame is made of fixed part on separable or inseparable one 1 and fixed part 5 once; wherein this time fixed part 5 is to cover 5 by the display back of the body to provide; fixed part 1 be should go up and a frame body 11 and a diaphragm fixing rib 12 comprised; this diaphragm fixing rib 12 extends internally from this frame body 11; in order to suppress whole back lighting module is fixed, and can be protected LCD to avoid directly clashing into or shaking the injury that is caused in the edge of these the superiors' diaphragm 21 end faces.
The polarimetry nature that revolves of fixed frame has a significant impact the effect of whole back lighting module, comprises visual angle, light reflection, optical efficiency of full screen etc.The polarimetry nature that revolves of the diaphragm of industry processing at present fixed frame has following two kinds of modes:
(1) the last fixed part of use black material:
Use the last fixed part 1 of black material and the following fixed part 5 of white material.Because should go up fixed part is black, thus the light that background light source scatters can be covered, and manufacture easily.Because of the whole fixed part 1 of going up is all black, can absorb light, and optical efficiency is lowered greatly but then, remove this, when user's side is seen on this black fixed part branch produce shade, make that the visual angle diminishes when watching, and produce the less illusion of screen.
(2) the last fixed part of the white material of use:
Can to avoid it with fixed part 1 on the white material be the shortcoming of black though change, on the other hand can reflection source because of white, cause bright line, so must on diaphragm, process.Referring to Fig. 2, it is a diaphragm printing zone synoptic diagram, is example with diaphragm 21, adopts the last fixed part of white material must be at the diaphragm fixing rib overlay area 211 process black printing ink on these diaphragm 21 end faces.The advantage of this back lighting module is higher optical efficiency, and the user watches the visual angle bigger, and the sensation screen is bigger; But it is higher that its shortcoming is because of ink printing difficulty in process degree around diaphragm, and manufacturing cost is improved relatively.
Therefore, be necessary to provide a kind of novelty and rich creationary fixed frame to address the above problem.
Summary of the invention
The object of the present invention is to provide a kind of light reflection and fixed frame of back lighting module with great visual angle of preventing.
Another object of the present invention is to provide a kind of reduces cost and the fixed frame that is used for back lighting module of technology difficulty.
In order to achieve the above object, the invention provides a kind of fixed frame that is used for a back lighting module, wherein this back lighting module has a light source, an optical plate, at least one diaphragm and a fixed frame, this at least one diaphragm is stacked at the top of this optical plate, this fixed frame comprises: fixed part on, it has an inner edge surface of contact, in order to suppress this diaphragm, this inner edge surface of contact is provided with a light-absorption layer, the light that is scattered in order to moderately to cover described light source, and should go up fixed part except that described inner edge surface of contact, remainder is in order to reflection ray; And fixed part once, certainly the below of this optical plate with should go up fixed part and combined.
In other words, the fixed frame that is used for back lighting module of the present invention, wherein back lighting module has a light source, one optical plate, an at least one diaphragm and a fixed frame, this diaphragm has an end face and an edge, this fixed frame comprises on one fixed part and fixed part once, should go up fixed part and have a frame body and a diaphragm fixing rib, this diaphragm fixing rib extends internally from this frame body, in order to suppress in the edge of this diaphragm end face, and have an inner edge surface of contact with the edge contact of this diaphragm end face, the inner edge surface of contact of this diaphragm fixing rib has a light-absorption layer, this light-absorption layer can be an ink printing layer, one printing ink coating layer, one atomizing processing layer, or with the dark layer of this diaphragm fixing rib one ejection formation, this back lighting module is reached prevent the light reflection, advantage with great visual angle.
Description of drawings
The present invention is described in detail below in conjunction with drawings and Examples:
Fig. 1 represents existing LCD diagrammatic cross-section;
Fig. 2 represents existing diaphragm printing zone synoptic diagram;
Fig. 3 represents the back lighting module diagrammatic cross-section of one embodiment of the invention;
Fig. 4 represents the back lighting module perspective exploded view of one embodiment of the invention; And
Fig. 5 represents fixed part elevational schematic view on the fixed frame of back lighting module of the present invention.
Symbol description among the figure:
Fixed part on 1
11 frame bodies
12 diaphragm fixing rib
2 diaphragm groups
21 screening glass
211 diaphragm printing zones
22 prismatic lenses
23 diffusion sheets
24 reflector plates
3 optical plates
4 light sources
5 displays back of the body lids (following fixed part)
6 back lighting modules
Fixed part on 61
611 frame bodies
612 diaphragm fixing rib
613 diaphragm fixing rib inner edge surface of contact
614 light-absorption layers
62 times fixed parts
63 diaphragms
631 diaphragm end faces
632 diaphragm edges
64 optical plates
65 light sources
Embodiment
Referring to the back lighting module 6 of Fig. 3 and Fig. 4, it comprises fixed part 61 on, once fixed part 62, a diaphragm 63, an optical plate 64 and a light source 65.This diaphragm 63 tools, one end face 631 and an edge 632.Back lighting module 6 can adopt the various diaphragm of single or multiple lift to make up, and the present invention is that example is done explanation with single diaphragm 63 only.Fixed part 61 be should go up and a frame body 611 and a diaphragm fixing rib 612 comprised, this diaphragm fixing rib 612 extends internally from this frame body 611, in order to suppress in the edge of the end face 631 of this diaphragm 63, wherein this diaphragm fixing rib 612 comprises an inner edge surface of contact 613.The inner edge surface of contact 613 of this diaphragm fixing rib 612 is to form a coating layer as a light-absorption layer 614 with black ink coating, and with end face 631 edge contact of this diaphragm 63.This optical plate 64 comprises a plurality of ends and a bottom, and it is located at the below of this diaphragm 63, utilizes the support of fixed part 62 down and is located on this between the fixed part 61 and following fixed part 62; 65 of light sources are located at this end of this optical plate 64, and one is fixed in this optical plate 64 and up and down between the fixed part 61,62.The last fixed part 61 for the treatment of fixed frame is with after following fixed part 62 combines, and then diaphragm 63, optical plate 64 and light source 65 are fixed, further whole back lighting module 6 is fixed in display outer frame.
The above-mentioned backplan of going up fixed part 61 is shown in Figure 5, and wherein the coating layer 614 of the inner edge surface of contact 613 of this diaphragm fixing rib 612 is for imposing the coating of black ink corresponding to the zone with these diaphragm end face 631 edge contact along this frame inner edge (being diaphragm fixing rib 612).
For the luminous effect that makes back lighting module 6 reaches better, simultaneously shield lights, have with great visual angle, and avoid printing the diaphragm cost, the present invention is directed to the last fixed part 61 of back lighting module 6 (referring to Fig. 3 and Fig. 4) and improve, it is characterized in that the inner edge surface of contact 613 tool light-absorption layers 614 of diaphragm fixing rib 612.The light-absorption layer that the present invention is suitable for, but the printed layers that is not limited to print extinction printing ink (as dark color or black ink), but the atomizing layer of the coating layer of coating extinction printing ink (as dark color or black ink), atomizing processing is all selectable light-absorption layer.When making this framework with plastic rubber ejaculate molding, in the inner edge surface of contact 613 ejaculation tool dark colors of this diaphragm fixing rib 612, and remainder penetrates the double-colored shoot mode of tool light color, also for can replace other practice that is coated with light-absorption layer.
The light-absorption layer 614 of diaphragm fixing rib 612 inner edge surface of contact among the present invention can appropriateness cover the light that backlight scatters, and therefore also reflection source not can not cause bright line simultaneously, makes the user when watching LCD attentively, and the eyes burden is less.The last fixed part 61 that the present invention adopted is the dark color except that the light-absorption layer 614 of above-mentioned inner edge surface of contact 613, other parts are light color (as white), Dan Buhui discovered this light-absorption layer when the user was watched by the front, so visual angle and frame sensation is still bigger, and also reason light-absorption layer and significantly reduce optical efficiency not.
Above-mentioned light source with this at least one end of placing this optical plate is one embodiment of the invention, is the back lighting module that is applied to directly-down light source in another embodiment of the present invention, and promptly light source is positioned at the situation of optical plate below.
The present invention exempts prior art simultaneously must adopt the technology that is printed on the diaphragm, and this technology is with high costs, and needs than difficulty and complicated technology, the present invention not only makes cost significantly reduce, more do not lose former powerfully, on cost control and ease of manufacture, be more conducive to industry and use.
The present invention is applicable to the back lighting module of all LCD, and this back lighting module comprises various membrane combination, optical plate, light source configuration and fixed frame, and for reaching other assembly that additional effect is added.Fixed frame is not limited to any given shape, also is not limited to combination single or that separate, and therefore fixedly the structure of diaphragm, optical plate and light source and the inner edge contact mask light-absorption layer person that contact with diaphragm are all the scope that institute of the present invention desire is protected.
Method of the present invention and feature will be more obvious through the explanation of above-mentioned example, now will be appreciated that, anyly not break away from the modification or the change of doing under the spirit of the present invention, all belong to Protector of the present invention.
Claims (36)
1. fixed frame that is used for a back lighting module, wherein this back lighting module has a light source, an optical plate, at least one diaphragm and a fixed frame, and this at least one diaphragm is stacked at the top of this optical plate, and this fixed frame comprises:
Fixed part on one, it has an inner edge surface of contact, in order to suppress this diaphragm, this inner edge surface of contact is provided with a light-absorption layer, the light that is scattered in order to moderately to cover described light source, and should go up fixed part except that described inner edge surface of contact, remainder is in order to reflection ray; And
Fixed part once, certainly the below of this optical plate with should go up fixed part and combined.
2. fixed frame according to claim 1 is characterized in that: the set light-absorption layer of this inner edge surface of contact is an ink printing layer.
3. fixed frame according to claim 1 is characterized in that: the set light-absorption layer of this inner edge surface of contact is a printing ink coating layer.
4. fixed frame according to claim 1 is characterized in that: the set light-absorption layer of this inner edge surface of contact is an atomizing processing layer.
5. fixed frame according to claim 1 is characterized in that: fixed part more comprises a diaphragm fixing rib on this, and the set light-absorption layer of this inner edge surface of contact is a dark layer, and with this diaphragm fixing rib one ejection formation.
6. according to claim 2 or 3 or 5 described fixed frames, it is characterized in that: this light-absorption layer is a black.
7. fixed frame according to claim 1 is characterized in that: the remainder of fixed part except that described inner edge surface of contact is white on this.
8. fixed frame according to claim 1 is characterized in that: this optical plate comprises a plurality of ends, and this light source is located at this at least one end of this optical plate.
9. fixed frame according to claim 1 is characterized in that: this optical plate comprises a bottom, and this light source is located at this bottom of this optical plate.
10. fixed frame that is used for a backlight module, wherein this backlight module has a light source, an optical plate, at least one diaphragm and a fixed frame, and this at least one diaphragm stacks on the top of this optical plate, and this fixed frame comprises:
Fixed part on one, it has a frame body and a diaphragm fixing rib, this diaphragm fixing rib extends internally from this frame body, and its bottom is formed with an inner edge surface of contact, in order to suppress this diaphragm, this inner edge surface of contact is provided with a light-absorption layer, the light that this light-absorption layer is scattered in order to moderately to cover described light source, and should go up fixed part except that described inner edge surface of contact, remainder is in order to reflection ray; And
Fixed part once, certainly the below of this optical plate with should go up fixed part and combined.
11. fixed frame according to claim 10 is characterized in that, the set light-absorption layer of the inner edge surface of contact of this diaphragm fixing rib is an ink printing layer.
12. fixed frame according to claim 10 is characterized in that, the set light-absorption layer of this diaphragm fixing rib inner edge surface of contact is a printing ink coating layer.
13. fixed frame according to claim 10 is characterized in that, the set light-absorption layer of this diaphragm fixing rib inner edge surface of contact is an atomizing processing layer.
14. fixed frame according to claim 10 is characterized in that, the light-absorption layer that this diaphragm fixing rib inner edge surface of contact is set and this diaphragm fixing rib one ejection formation.
15., it is characterized in that this light-absorption layer is a black according to each described fixed frame in the claim 11,12 and 14.
16. fixed frame according to claim 10 is characterized in that, the remainder of fixed part except that described inner edge surface of contact is white on this.
17. fixed frame according to claim 10 is characterized in that, this optical plate comprises a plurality of ends, and this light source is located at this at least one end of this optical plate.
18. fixed frame according to claim 10 is characterized in that, this optical plate comprises a bottom, and this light source is located at this bottom of this optical plate.
19. fixed frame that is used for a backlight module, wherein this backlight module has a light source, an optical plate, at least one diaphragm and a fixed frame, described at least one diaphragm stacks on the top of this optical plate, and this light source is between this optical plate and this fixed frame; This fixed frame comprises:
Fixed part on one, it has an inner edge surface of contact and at least one side, described inner edge surface of contact is in order to being compressed on this diaphragm and being provided with a light-absorption layer, the light that is scattered in order to moderately to cover described light source, and described side is in the face of described light source and in order to reflection ray; And
Fixed part once, certainly the below of this optical plate with should go up fixed part and combined.
20. fixed frame according to claim 19 is characterized in that, the set light-absorption layer of this inner edge surface of contact is an ink printing layer.
21. fixed frame according to claim 19 is characterized in that, the set light-absorption layer of this inner edge surface of contact is a printing ink coating layer.
22. fixed frame according to claim 19 is characterized in that, the set light-absorption layer of this inner edge surface of contact is an atomizing processing layer.
23. fixed frame according to claim 19 is characterized in that, fixed part also comprises a diaphragm fixing rib on this, and the set light-absorption layer of this inner edge surface of contact is a dark layer, and with this diaphragm fixing rib one ejection formation.
24., it is characterized in that this light-absorption layer is a black according to each described fixed frame in the claim 20,21 and 23.
25. fixed frame according to claim 19 is characterized in that, the remainder of fixed part except that described inner edge surface of contact is white on this.
26. fixed frame according to claim 19 is characterized in that, this optical plate comprises a plurality of ends, and this light source is located at this at least one end of this optical plate.
27. fixed frame according to claim 19 is characterized in that, this optical plate comprises a bottom, and this light source is located at this bottom of this optical plate.
28. fixed frame that is used for a backlight module, wherein this backlight module has a light source, an optical plate, at least one diaphragm and a fixed frame, this at least one diaphragm stacks on the top of this optical plate, and this light source is between this optical plate and this fixed frame; This fixed frame comprises:
Fixed part on one, it has an inner edge surface of contact and a side at least, described inner edge surface of contact is in order to being compressed on this diaphragm and being provided with a light-absorption layer, the light that is scattered in order to moderately to cover described light source, and described side is in the face of described light source and in order to reflection ray; And
Fixed part once, certainly the below of this optical plate with should go up fixed part and combined.
29. fixed frame according to claim 28 is characterized in that, the set light-absorption layer of this inner edge surface of contact is an ink printing layer.
30. fixed frame according to claim 28 is characterized in that, the set light-absorption layer of this inner edge surface of contact is a printing ink coating layer.
31. fixed frame according to claim 28 is characterized in that, the set light-absorption layer of this inner edge surface of contact is an atomizing processing layer.
32. fixed frame according to claim 28 is characterized in that, fixed part also comprises a diaphragm fixing rib on this, and the set light-absorption layer of this inner edge surface of contact is a dark layer, and with this diaphragm fixing rib one ejection formation.
33., it is characterized in that this light-absorption layer is a black according to each described fixed frame in the claim 29,30 and 32.
34. fixed frame according to claim 28 is characterized in that, the remainder of fixed part except that described inner edge surface of contact is white on this.
35. fixed frame according to claim 28 is characterized in that, this optical plate comprises a plurality of ends, and this light source is located at this at least one end of this optical plate.
36. fixed frame according to claim 28 is characterized in that, this optical plate comprises a bottom, and this light source is located at this bottom of this optical plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01144417 CN1427282B (en) | 2001-12-17 | 2001-12-17 | Fixed frame used on back lighting module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01144417 CN1427282B (en) | 2001-12-17 | 2001-12-17 | Fixed frame used on back lighting module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1427282A CN1427282A (en) | 2003-07-02 |
| CN1427282B true CN1427282B (en) | 2010-05-12 |
Family
ID=4677564
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01144417 Expired - Lifetime CN1427282B (en) | 2001-12-17 | 2001-12-17 | Fixed frame used on back lighting module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1427282B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101203658B1 (en) * | 2006-10-11 | 2012-11-23 | 삼성전자주식회사 | Display device having the enlarged apparent size and methods for enlarging the apparent size of the display panel |
| CN101256299B (en) | 2007-02-28 | 2010-05-26 | 群康科技(深圳)有限公司 | Back light module unit as well as display device using the same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5815224A (en) * | 1994-04-13 | 1998-09-29 | Hitachi, Ltd. | Liquid crystal display device having video signal driving circuit mounted on one side |
| US5838400A (en) * | 1994-10-21 | 1998-11-17 | Hitachi, Ltd. | Liquid crystal display device with reduced frame portion surrounding display area |
| US5966191A (en) * | 1997-06-30 | 1999-10-12 | Samsung Electronics Co., Ltd. | Liquid crystal display device with retained light guide plate |
| JP2001022291A (en) * | 1999-07-08 | 2001-01-26 | Toshiba Corp | Planar display device |
-
2001
- 2001-12-17 CN CN 01144417 patent/CN1427282B/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5815224A (en) * | 1994-04-13 | 1998-09-29 | Hitachi, Ltd. | Liquid crystal display device having video signal driving circuit mounted on one side |
| US5838400A (en) * | 1994-10-21 | 1998-11-17 | Hitachi, Ltd. | Liquid crystal display device with reduced frame portion surrounding display area |
| US5966191A (en) * | 1997-06-30 | 1999-10-12 | Samsung Electronics Co., Ltd. | Liquid crystal display device with retained light guide plate |
| JP2001022291A (en) * | 1999-07-08 | 2001-01-26 | Toshiba Corp | Planar display device |
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| Publication number | Publication date |
|---|---|
| CN1427282A (en) | 2003-07-02 |
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Granted publication date: 20100512 |