CN1316298C - Planar display device - Google Patents
Planar display device Download PDFInfo
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- CN1316298C CN1316298C CNB200410042345XA CN200410042345A CN1316298C CN 1316298 C CN1316298 C CN 1316298C CN B200410042345X A CNB200410042345X A CN B200410042345XA CN 200410042345 A CN200410042345 A CN 200410042345A CN 1316298 C CN1316298 C CN 1316298C
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- guide plate
- light guide
- glass substrate
- flat
- light
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Abstract
The present invention relates to a panel display which comprises a glass substrate, a light guiding plate, a lamp tube and a back frame, wherein the light guiding plate has one incident end, one light outlet face, one front end and one bottom face; the light outlet face is corresponding to the glass substrate; the lamp tube is arranged on the incident end of the light guiding plate. Light rays emitted by the lamp tube enter the light guiding plate through the incident end, and then, are emitted out through the light outlet face in order to provide a light source required during display of the glass substrate. The back frame and the bottom face of the front end of the light guiding plate are mutually combined by a double-sided tape. The back frame and the light outlet face of the light guiding plate are fixed by a gasket. The glass substrate is loaded on the gasket.
Description
Technical field
The invention relates to a kind of flat-panel screens, particularly about a kind of antidetonation and flat-panel screens of avoiding the light leak function of having concurrently.
Background technology
Please refer to Fig. 1, it is the side cross section view of the flat-panel screens of known techniques one.Figure midplane display 10 comprises a glass substrate 12, a light guide plate 14, a fluorescent tube 16, a lampshade 18, a back of the body frame 20 and a preceding frame 22.
Generally then interosculate in mode sealed or that fix between lampshade 18 and the back of the body frame 20, thus, light guide plate 14 is fixed on the back of the body frame 20 with incident end 141.At last, the combining of frame 22 and back of the body frame 20 before utilizing again to finish the assembling of flat-panel screens, wherein, combining between preceding frame 22 and the back of the body frame 20 can utilize set binding member on it, and for example slot and grab engage each other and lock.
See also shown in Figure 2ly, it is the three-dimensional exploded view of the flat-panel screens of known techniques one; Because flat-panel screens 10 all must be through strict impact test before dispatching from the factory, and its incident end 141 is clamped by lampshade 18 if be between light guide plate 14 and the back of the body frame 20, obviously be difficult to pass through impact test, therefore, the dual side-edge of known techniques one light guide plate 14 is provided with ledge arrangement 145, and in back of the body frame 20, be provided with corresponding slot 205, shown in Fig. 2 A, assembling back ledge arrangement 145 can combine with the slot 205 on the back of the body frame 20, to limit light guide plate 14 and to carry on the back relative slip between the frame 20.
Please continue to consult Fig. 2, glass substrate 12 more comprises an effective viewing area 121 and an invalid viewing area 122.Wherein effectively viewing area 121 is positioned at the zone line of glass substrate 12, and it can cooperate light source that light guide plate 14 provided to carry out the demonstration of image; 122 neighboring areas that are positioned at glass substrate, invalid viewing area wherein are coated with light absorbent so that light only can be from effectively viewing area 121 ejaculations.And preceding frame 22 is incorporated into 122 tops, invalid viewing area.
When the flat-panel screens 10 of known techniques one is finished assembling, light guide plate 14 is to place glass substrate 12 belows, and ledge arrangement 145 is then covered by the invalid viewing area 122 of glass substrate 12.Because light guide plate 14 is in the process of leaded light, exiting surface 142 all can be exported light with ledge arrangement 145, though and ledge arrangement 145 is covered by the invalid viewing area 122 of glass substrate 12, but the light that in fact still has part can be because the difference of scattering angle, and inject near the ledge arrangement 145 effective viewing area 121, make this regional glass substrate 12 produce light leak (light leakage) phenomenon, cause the brightness disproportionation of flat-panel screens 10 integral body, and then have influence on the quality that image shows.
Because the light guide plate of known techniques one has the phenomenon of light leak (light leakage) at the edge of ledge arrangement, thereby make the quality variation that the image of flat-panel screens shows, and in order to overcome above-mentioned shortcoming, there is increasing flat-panel screens to adopt the light guide plate of no ledge arrangement at present, the light guide plate of V-shaped groove form for example is to solve the light leak problem of known techniques one.
Please refer to shown in Fig. 3 A, it is the flat-panel screens side cross section view of known techniques two.It comprises glass substrate 32, light guide plate 34, fluorescent tube 36, lampshade 38, back of the body frame 40 and preceding frame 42.Glass substrate 32 has an effective viewing area 321 and an invalid viewing area 322.Because most of element of known techniques two is all identical with known techniques one, so will repeat no more for the element of same section, and be directed to different part and describe.
Different being of known techniques two and known techniques one maximum, the not setting of ledge arrangement of light guide plate 34 that it adopted in the same manner, does not have the setting (shown in Fig. 3 B) of slot yet on back of the body frame 40.But in order to increase the stability of light guide plate 34, known techniques two is to utilize a two-sided adhesive tape 45 to stick mutually between the front end 343 of light guide plate 34 and back of the body frame 40.Replace ledge arrangement 145 and the slot 205 of Fig. 2 by the combination of double sticky tape 45, with restriction light guide plate 34 with carry on the back relative slip between the frame 40.
Please continue A with reference to Fig. 3, the back of the body frame 40 of known techniques two is in light guide plate front end 343 parts, it is a step structure 401, glass substrate 32 is to be carried on the step structure 401 by the liner 47 of a rubber material, to avoid influencing individual other optical property, the particularly optical property of effective viewing area 321 because of extruding between glass substrate 32 and the light guide plate 34.
Though the overall brightness of known techniques two than known techniques one, has preferable uniformity coefficient, because the thickness deficiency of its liner 47, damping capaicty is limited, and therefore the ability that prevents that glass substrate 32 from sliding only can be provided, and anti seismic efficiency is not good.
In addition, the light guide plate front end of known techniques two can provide the area of attachment of double sticky tape limited, cause the crystallized ability deficiency of double sticky tape 45, along with the shatter-proof standard of product constantly improves, when the flat-panel screens 30 of known techniques two when being subjected to bigger impact, the crystallized ability of its double sticky tape 45 may lose efficacy, and then caused light guide plate 34 bump fluorescent tubes 36, caused the damage of fluorescent tube 36 or light guide plate 34 itself.
Because known techniques two there is no the shading design at the front end 343 of light guide plate, in the process of leaded light, still having part light 33 can penetrate and generation light leakage phenomena (shown in Fig. 3 C) via this place, and then has influence on the image quality of flat-panel screens again.
Therefore, for the research staff who is engaged in the flat-panel screens association area, there's no one who doesn't or isn't be devoted to solve the shortcoming that known techniques still has, in the hope of can further improving the quality of flat-panel screens product.
Summary of the invention
Fundamental purpose of the present invention is to provide a kind of flat-panel screens, and it can avoid glass substrate to produce light leak (light leakage) phenomenon, and then makes flat-panel screens can keep the quality that whole brightness is even and promote the image demonstration.
Another object of the present invention is to provide a kind of flat-panel screens, it has preferable shock resistance, makes flat-panel screens under bigger impact, and glass substrate wherein is unlikely and breaks.
A further object of the present invention is to provide a kind of flat-panel screens, and its assembling is comparatively firm, makes flat-panel screens under bigger impact, and light guide plate wherein is unlikely the bump fluorescent tube, to avoid the damage of fluorescent tube or light guide plate.
Flat-panel screens of the present invention has a glass substrate, a light guide plate, a fluorescent tube, a lampshade, a back of the body frame and a preceding frame.
The inside of glass substrate has a liquid crystal layer and a chromatic filter layer, and the orientation of liquid crystal molecule can determine the light and shade of light in the liquid crystal layer; Chromatic filter layer can determine the color of light output.And glass substrate provides backlight to show by the light guide plate below it.
Light guide plate is located at the below of glass substrate, it comprises an incident end, a front end, an exiting surface and a bottom surface, its exiting surface is corresponding with glass substrate, its bottom surface then is provided with a plurality of particle patterns, its major function is as the diffusion point of light at the light guide plate scattering-in, makes light export glass substrate to by exiting surface uniformly.
Fluorescent tube is arranged at light guide plate incident end, lampshade then is arranged at the outside of fluorescent tube, lampshade can be concentrated the light of fluorescent tube to inject the incident end more with holding function except having reflection function, its exterior design becomes C type structure, fluorescent tube can be placed in wherein, and utilize two ends of this C type structure that light guide plate incident end is clamped.And lampshade and back of the body frame can interosculate, and thus, light guide plate is fixed on the back of the body frame with its incident end.
Back of the body frame is one to have the storage tank of opening, and it can be placed in said elements wherein, and as mentioned above, the incident end of light guide plate sees through lampshade and carries on the back frame and combine; The front bottom end of light guide plate then utilizes a two-sided adhesive tape fixing.
In addition, the present invention is with the different of known techniques maximum, back of the body frame of the present invention there is no the design of step structure at the front end near light guide plate, but the liner that a rubber material is set at this place replaces it, the exiting surface of the front end of light guide plate is fixed in the below of this liner, can be for glass substrate bearing thereon on the liner.Thus, the thickness of liner is known as thick, and it has more good shock resistance, and can reach the effect of shading on light guide plate front end exiting surface except can preventing that glass substrate from sliding.
At last, the combining of frame and back of the body frame before utilizing again to finish the assembling of flat-panel screens, wherein, combining between preceding frame and the back of the body frame can utilize set binding member on it, and for example slot and grab engage each other and lock.And preceding frame also is incorporated into glass substrate surrounding edge top partly.
Thus, flat-panel screens provided by the invention can avoid glass substrate to produce light leak (1ightleakage) phenomenon, in addition, shock resistance and assemble stable have more been strengthened, so that flat-panel screens is under bigger impact, glass substrate wherein is unlikely and breaks, and light guide plate is unlikely the bump fluorescent tube, has avoided the damage of fluorescent tube or light guide plate.
Description of drawings
Fig. 1 is the side cross section view of known techniques one flat-panel screens;
Fig. 2 is the three-dimensional exploded view of Fig. 1 flat-panel screens;
Fig. 2 A is the ledge arrangement synoptic diagram that combines with slot;
Fig. 3 A is the side cross section view of known techniques two flat-panel screens;
Fig. 3 B is the light guide plate of Fig. 3 A and back of the body frame;
The marginal ray path of Fig. 3 C displayed map 3A flat-panel screens;
Fig. 4 A is the side cross section view of flat-panel screens of the present invention;
The marginal ray path of Fig. 4 B displayed map 4A flat-panel screens.
The figure number table of comparisons:
Flat-panel screens 10,30,50 glass substrates 12,32,52
Effective 121,321,521 invalid viewing areas 122,322,522, viewing area
Exiting surface 142,542 front ends 143,343,543
Bottom surface 144,544 ledge arrangement 145
Back of the body frame 20,40,60 slots 205
Preceding frame 22,42,62 light 33,53
Step structure 401 double sticky tapes 45,65
Embodiment
Please refer to Fig. 4 A, Fig. 4 A is the side cross section view of flat-panel screens of the present invention.Flat-panel screens 50 comprises a glass substrate 52, a light guide plate 54, a fluorescent tube 56, a lampshade 58, a back of the body frame 60 and a preceding frame 62.
The inside of glass substrate 52 has a liquid crystal layer and a chromatic filter layer (not shown), and the orientation of liquid crystal molecule can determine the light and shade of light in the liquid crystal layer; Chromatic filter layer can determine the color of light output.Glass substrate 52 more comprises an effective viewing area 521 and an invalid viewing area 522, and effectively viewing area 521 is positioned at the zone line of glass substrate 52, and it can cooperate light source that light guide plate 54 provided to carry out the demonstration of image; 522 of invalid viewing areas are the neighboring areas that is positioned at glass substrate 52, and light absorbent is arranged its surface coated so that light only can be from effectively viewing area 521 ejaculations.And glass substrate 52 provides backlight to show by the light guide plate 54 below it.
Light guide plate 54 is located at the below of glass substrate 52, it comprises an incident end 541, a front end 543, an exiting surface 542 and a bottom surface 544, its exiting surface 542 is corresponding with glass substrate 52,544 of its bottom surfaces are provided with a plurality of particle patterns, its major function is as the diffusion point of light at the light guide plate scattering-in, makes light export glass substrate 52 to by exiting surface 542 uniformly.Preferred embodiment of the present invention is to use the V-shaped groove form light guide plate of no ledge arrangement.
Fluorescent tube 56 is arranged at light guide plate incident end 541,58 outsides that are arranged at fluorescent tube 56 of lampshade, lampshade 58 can be concentrated the light of fluorescent tube 56 to inject the incident end 541 more with holding function except having reflection function, as shown in the figure, lampshade 58 is designed to C type structure, fluorescent tube 56 can be placed in wherein, and two ends that utilize this C type structure clamp the incident end 541 of light guide plate 54.And interosculate in mode sealed or that fix on the implementation between lampshade 58 and the back of the body frame 60, thus, light guide plate 54 is fixed on the back of the body frame 60 with incident end 541.
Back of the body frame 60 is one to have the storage tank of opening, it can be placed in said elements wherein, wherein the incident end 541 of light guide plate 54 combines with back of the body frame 60 through lampshade 58, front end 543 bottoms of light guide plate then utilize a two-sided adhesive tape 65 to fix, in addition, the present invention is with the different of known techniques maximum, back of the body frame 60 of the present invention there is no the design of step structure at the front end 543 near light guide plate, but a liner 67 replacements are set at this place, the material of this liner 67 can be the rubber material, the exiting surface of the front end 543 of light guide plate is fixed in the below of this liner 67, can be for glass substrate 52 carryings thereon on the liner 67.
At last, the combining of frame 62 and back of the body frame 60 before utilizing again to finish the assembling of flat-panel screens, wherein, combining between preceding frame 62 and the back of the body frame 60 can utilize set binding member on it, and for example slot and grab engage each other and lock.And as shown in the figure, preceding frame 62 and be incorporated into 522 tops, invalid viewing area of glass substrate 52.
Please comparison diagram 4A and Fig. 3 A.Because the present invention there is no the design of step structure in back of the body frame 60 inside, therefore for the back of the body frame of same size, light guide plate 54 sizes that can place in back of the body frame of the present invention 60 inside are bigger, as shown in the figure, light guide plate 54 of the present invention is compared down the length that extended with known light guide plate 34, therefore between the bottom of back of the body frame 60 and light guide plate front end 543, fixedly the double sticky tape of usefulness also has bigger area, can reach fixed effect preferably.
In addition, in better embodiment, can utilize a two-sided adhesive tape to make the below of liner 67 be fixed in the exiting surface of the front end 543 of light guide plate.Thus, the present invention is compared to known techniques two (Fig. 3 A), more increased area of attachment between light guide plate 54 and the liner 67 (being the area of attachment on the exiting surface 542 of light guide plate front end 543).With regard to the viewpoint of area of attachment, the present invention can make light guide plate 54 more effectively be fixed in the flat-panel screens 50 significantly.
And among the present invention (Fig. 4 A) flat-panel screens 50, when preceding frame 62 and back of the body frame 60 fastened locking each other, preceding frame 62 and back of the body frame 60 can clamp light guide plate 54, liner 67 and glass substrate 52 together.Compared to Fig. 3 A, only there is glass substrate 32 to be seized on both sides by the arms in the known techniques two, the present invention then further makes another significant components light guide plate 54 of flat-panel screens 50 also can be fixed in wherein by the mode of seizing on both sides by the arms, the difficulty that the degree of stability after assembling with reinforcement, increase light guide plate 54 move.
The present invention utilizes a thicker liner 67 with bearing glass substrate 52, and this liner 67 is carried on back of the body frame 60 and the light guide plate 54 simultaneously, make it reach the function that Fig. 3 A step structure 401 and liner 47 are had, to avoid influencing individual other optical property, the particularly optical property of effective viewing area 521 because of extruding between glass substrate 52 and the light guide plate 54.In addition, the thickness of liner 67 is thicker, except can preventing that glass substrate 52 from sliding, has more good shock resistance.By the setting of liner 67, flat-panel screens 50 of the present invention can have the situation of breaking to produce in test and glass substrate 52 is unlikely by the strict preceding impact test that dispatches from the factory.This shows, when the present invention has improved known techniques two flat-panel screens and has suffered bigger impact, the crackly shortcoming of glass substrate.
Please refer to Fig. 4 B, the marginal ray path of Fig. 4 B displayed map 4A flat-panel screens.Liner 67 of the present invention more can further improve the shortcoming of edge light leak in the known techniques except increasing as mentioned above the advantage of flat-panel screens shock resistance.Shown in Fig. 4 B, light 53 can be penetrated by the front end 543 of light guide plate 54, and can be via 60 reflections of back of the body frame.Yet the light 53 that back of the body frame 60 can be reflected by the liner 67 of light guide plate 54 tops is covered, and avoids light 53 outgoing to glass substrate 52.There is no the design of shading compared to its light guide plate front end of Fig. 3 C, 67 functions with shading of liner of the present invention have lowered the chance of flat-panel screens edge light leak.In better embodiment of the present invention, use material with as liner 67 with extinction effect, so that light 53 can not only crested, and can be absorbed effectively.
Comprehensive the above, the invention provides a kind of flat-panel screens, can avoid glass substrate to produce light leak (light leakage) phenomenon, in addition, more strengthened shock resistance and assemble stable, so that flat-panel screens is under bigger impact, glass substrate wherein is unlikely and breaks, and light guide plate is unlikely the bump fluorescent tube, has avoided the damage of fluorescent tube or light guide plate.Therefore, flat-panel screens of the present invention reached keep overall brightness evenly, strengthen shock resistance and promote effects such as assemble stable.
Claims (7)
1. flat-panel screens is characterized in that comprising:
One glass substrate;
One light guide plate has an incident end, an exiting surface, a front end and a bottom surface, and wherein this exiting surface is corresponding with this glass substrate;
One fluorescent tube places the incident end of this light guide plate, and the light that this fluorescent tube sent enters this light guide plate by this incident end, penetrates light source required when providing this glass substrate to show via this exiting surface again;
One back of the body frame, combine with this glass substrate, this fluorescent tube and this light guide plate respectively, wherein utilize a two-sided adhesive tape to interosculate between the bottom surface of this back of the body frame and this light guide plate front end, utilize a liner with good shock resistance to fix between the exiting surface of this back of the body frame and this light guide plate, and this glass substrate bearing is on this liner.
2. flat-panel screens as claimed in claim 1 is characterized in that: this flat-panel screens more comprises a lampshade, and this lampshade is in order to concentrate the incident end of injecting this light guide plate with the light of this fluorescent tube.
3. flat-panel screens as claimed in claim 2 is characterized in that: utilize this lampshade to fix between the incident end of this back of the body frame and this light guide plate.
4. flat-panel screens as claimed in claim 1 is characterized in that: frame before this flat-panel screens more comprises, this preceding frame is overlying on this glass substrate in order to cover, and combines with this back of the body frame, to fix this glass substrate.
5. flat-panel screens as claimed in claim 1 is characterized in that: the material of this liner is a rubber.
6. flat-panel screens as claimed in claim 1 is characterized in that: this glass substrate has an effective viewing area and an invalid viewing area, and the invalid viewing area of this glass substrate is carried on this liner.
7. flat-panel screens as claimed in claim 1 is characterized in that: this light guide plate is the light guide plate of V-shaped groove form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410042345XA CN1316298C (en) | 2004-05-20 | 2004-05-20 | Planar display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200410042345XA CN1316298C (en) | 2004-05-20 | 2004-05-20 | Planar display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1580893A CN1580893A (en) | 2005-02-16 |
| CN1316298C true CN1316298C (en) | 2007-05-16 |
Family
ID=34582144
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200410042345XA Active CN1316298C (en) | 2004-05-20 | 2004-05-20 | Planar display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1316298C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100434979C (en) * | 2006-03-06 | 2008-11-19 | 胜华科技股份有限公司 | Display unit |
| CN101162330B (en) * | 2007-11-29 | 2010-07-28 | 友达光电股份有限公司 | LCD and backlight module structure, front frame and back board thereof, and manufacturing method thereof |
| TWI526721B (en) * | 2011-08-15 | 2016-03-21 | 友達光電股份有限公司 | A light guide plate having a supporting rib and a display module using the same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003043479A (en) * | 2001-07-27 | 2003-02-13 | Fujitsu Ltd | Liquid crystal display module and portable terminal |
| CN1439959A (en) * | 2002-02-22 | 2003-09-03 | 友达光电股份有限公司 | Background module set of thin film liquid crystal display device |
| JP2003295182A (en) * | 2002-03-29 | 2003-10-15 | Sharp Corp | Liquid crystal display device |
| JP2003330377A (en) * | 2002-05-10 | 2003-11-19 | Seiko Epson Corp | Electro-optic device and double coated tape, and electronic apparatus |
-
2004
- 2004-05-20 CN CNB200410042345XA patent/CN1316298C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003043479A (en) * | 2001-07-27 | 2003-02-13 | Fujitsu Ltd | Liquid crystal display module and portable terminal |
| CN1439959A (en) * | 2002-02-22 | 2003-09-03 | 友达光电股份有限公司 | Background module set of thin film liquid crystal display device |
| JP2003295182A (en) * | 2002-03-29 | 2003-10-15 | Sharp Corp | Liquid crystal display device |
| JP2003330377A (en) * | 2002-05-10 | 2003-11-19 | Seiko Epson Corp | Electro-optic device and double coated tape, and electronic apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1580893A (en) | 2005-02-16 |
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