CN100414390C - Double-screen liquid-crystal display device - Google Patents
Double-screen liquid-crystal display device Download PDFInfo
- Publication number
- CN100414390C CN100414390C CNB200510120966XA CN200510120966A CN100414390C CN 100414390 C CN100414390 C CN 100414390C CN B200510120966X A CNB200510120966X A CN B200510120966XA CN 200510120966 A CN200510120966 A CN 200510120966A CN 100414390 C CN100414390 C CN 100414390C
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- double
- display device
- crystal display
- optical diaphragm
- liquid crystal
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Abstract
A liquid crystal display unit with two screens is prepared as stacking the first liquid crystal face plate, the first optical diaphragm set, a light guide plate, the second optical diaphragm set and the second liquid crystal face plate in sequence; setting the second liquid crystal face plate to be smaller than the first one and setting the second optical diaphragm to be smaller than the first one.
Description
[technical field]
The invention relates to a kind of liquid crystal indicator, particularly about a kind of double-screen liquid-crystal display device.
[background technology]
Liquid crystal indicator because of have low diathermaneity, volume is compact and advantage such as low voltage drive, be widely used among the mobile communication products such as palmtop computer and mobile phone.But along with the progress in epoch, a lot of products are used the function that double screen shows, show mobile phone as Collapsible dual-screen, and the secondary display screen on the shell can show date when standby, show number or name when time, incoming call, also can point out and receive note; Main display in the shell can show main functional picture, as short message content, interface or the like.
The function that liquid crystal indicator will reach the double screen demonstration needs two LCD MODULE, the submodule that two single faces show can be in juxtaposition, and one inside one outwards is used for realizing that major and minor double screen shows.
Please refer to Fig. 1, is a kind of prior art double-screen liquid-crystal display device.This double-screen liquid-crystal display device 100 comprises a light guide plate 130, one is arranged at the light source 140 of incidence surface 133 1 sides of this light guide plate 130, be arranged at first optical diaphragm group 111 and second optical diaphragm group 121 of first, second exiting surface 131,132 1 sides of this light guide plate 130 respectively, one is arranged at first liquid crystal panel 112, on this first optical diaphragm group 111 is arranged at the framework 150 that second liquid crystal panel 122 and on this second optical diaphragm group 121 is used for fixing said structure.
Wherein, this second liquid crystal panel 122 is less than this first liquid crystal panel 112.This first optical diaphragm group 111 and this first liquid crystal panel 112 are used for main screen and show, this second optical diaphragm group 121 and this second liquid crystal panel 122 are used for secondary screen and show.
From light beam that light source 140 sends after incidence surface 133 incides light guide plate 130, separating the back in light guide plate 130 penetrates from first, second exiting surface 131,132, via the optical effect of first, second optical diaphragm group 111,121, incide first liquid crystal panel 112 and second liquid crystal panel 122 and show respectively to realize double screen.
First, second optical diaphragm group 111,121 sizes of this double-screen liquid-crystal display device are consistent, and secondary screen is generally less than its main screen in actual product, so cause the waste of secondary screen optical diaphragm group excess stock and increase cost of products.
[summary of the invention]
In order to overcome the secondary waste of optical diaphragm group excess stock and the problem that corresponding cost increases of shielding of double-screen liquid-crystal display device in the prior art, the invention provides a kind of cost-effective double-screen liquid-crystal display device.
A kind of double-screen liquid-crystal display device, it comprises one first liquid crystal panel, one first optical diaphragm group, a light guide plate, a reflector plate, one second optical diaphragm group and one second liquid crystal panel that is cascading.This second liquid crystal panel is less than first liquid crystal panel, and this second optical diaphragm group is less than first optical diaphragm group.This reflector plate tool one opening, this opening is less than this second optical diaphragm group and greater than the viewing area of second liquid crystal panel, and this aperture position is corresponding with second liquid crystal panel.
Compared with prior art, double-screen liquid-crystal display device of the present invention has following advantage: this double-screen liquid-crystal display device reduces the size of secondary screen optical diaphragm group, avoids causing the waste of secondary screen optical diaphragm group material, so can reduce cost of products.Also shield reducing of blooming piece packet size, can reduce the thickness of double display unit integral body because of pair.
[description of drawings]
Fig. 1 is a kind of structural representation of prior art double-screen liquid-crystal display device.
Fig. 2 is the structural representation of double-screen liquid-crystal display device first embodiment of the present invention.
Fig. 3 is the structural representation of double-screen liquid-crystal display device second embodiment of the present invention.
Fig. 4 is the structural representation of double-screen liquid-crystal display device the 3rd embodiment of the present invention.
[embodiment]
Please refer to Fig. 2, is the structural representation of double-screen liquid-crystal display device first embodiment of the present invention.
This double-screen liquid-crystal display device 200 comprises one first liquid crystal panel 212, one first optical diaphragm group 211, one second liquid crystal panel 222, one second optical diaphragm group 221, a light guide plate 230, a light source 240 and a framework 250.This light guide plate 230 comprises an incidence surface 233, one first exiting surface 231 and one second exiting surface 232, and this first exiting surface 231 is relative with second exiting surface 232, and this incidence surface 233 links to each other with first exiting surface 231 and second exiting surface 232.
This first optical diaphragm group 211 and second optical diaphragm group 221 can be the combination of diffusion sheet, brightening piece.
This first liquid crystal panel 212, first optical diaphragm group 211, light guide plate 230, second optical diaphragm group 221 and the stacked from bottom to up successively setting of second liquid crystal panel 222.This light source 240 is arranged at incidence surface 233 1 sides of this light guide plate 230.This framework 250 is used for fixing said structure.
Wherein, this second liquid crystal panel 222 is less than this first liquid crystal panel 212.This second optical diaphragm group 221 is less than this first optical diaphragm group 211, and greater than this second liquid crystal panel 222.
This first optical diaphragm group 211 and this first liquid crystal panel 212 are used for main screen and show, this second optical diaphragm group 221 and this second liquid crystal panel 222 are used for secondary screen and show.
After incidence surface 233 incides light guide plate 230, disperse the back from first, second exiting surface 231,232 ejaculations from light beam that light source 240 sends through light guide plate 230 guiding.The light beam that penetrates from first exiting surface 231 incides first liquid crystal panel 212 and realizes that main screen shows via the optical effect of first optical diaphragm group 211.The light beam that penetrates from second exiting surface 232 incides second liquid crystal panel 222 and realizes that secondary screen shows via the optical effect of second optical diaphragm group 221.
Compared with prior art, second optical diaphragm group, 221 sizes of this double-screen liquid-crystal display device 200 reduce, and can reduce the waste of secondary screen optical diaphragm group material, and cost of products can reduce also.Because of second optical diaphragm group, 221 sizes reduce, itself and second liquid crystal panel 222 are contained within the framework 250 in the lump, so can reduce the thickness of double display unit 200 integral body again.
Please refer to Fig. 3, is the structural representation of double-screen liquid-crystal display device second embodiment of the present invention.The difference of this double-screen liquid-crystal display device 300 and the first embodiment double-screen liquid-crystal display device 200 is: this double-screen liquid-crystal display device 300 comprises that further a reflector plate 360 is arranged between second optical diaphragm group 321 and the light guide plate 330.
This reflector plate 360 tools one opening 361, this opening 361 is less than second optical diaphragm group 321 and greater than the viewing area of second liquid crystal panel 322, and opening 361 is corresponding with second liquid crystal panel 322.The reflecting surface 362 of this reflector plate 360 is towards second exiting surface 332 of light guide plate 330.
This reflector plate 360 can be the half-transparent half-reflection film.This reflector plate 360 also can be the black and white adhesive tape, and wherein the white face of this black and white adhesive tape is towards second exiting surface 332 of light guide plate 330.
The shaded effect of this reflector plate 360 can cover the Boris Edge Lighting of second optical diaphragm group 321, avoids seeing in the main screen viewing area bright line that Boris Edge Lighting caused because of second optical diaphragm group 321, so can improve the demonstration uniformity coefficient of main screen.
Please refer to Fig. 4, is the structural representation of double-screen liquid-crystal display device the 3rd embodiment of the present invention.The difference of this double-screen liquid-crystal display device 400 and the second embodiment double-screen liquid-crystal display device 300 is: this double-screen liquid-crystal display device 400 comprises that further a diffusion sheet 470 is arranged between reflector plate 460 and the light guide plate 430.
The frame of these diffusion sheet 470 aerosolizable reflector plates 460 also can be subdued the secondary screen shadow phenomenon that window caused of main screen viewing area internal cause, further improves the display quality of main screen.
This double-screen liquid-crystal display device 400 also can be provided with a half-transparent half-reflection film between reflector plate 460 and light guide plate 430, and this half-transparent half-reflection film can reach the effect same with diffusion sheet 470.
Claims (8)
1. double-screen liquid-crystal display device, it comprises one first liquid crystal panel, one first optical diaphragm group, a light guide plate, a reflector plate, one second optical diaphragm group and one second liquid crystal panel that is cascading, this second liquid crystal panel is less than first liquid crystal panel, this second optical diaphragm group is less than first optical diaphragm group, it is characterized in that: this reflector plate tool one opening, this opening is less than this second optical diaphragm group and greater than the viewing area of second liquid crystal panel, and this aperture position is corresponding with second liquid crystal panel.
2. double-screen liquid-crystal display device as claimed in claim 1 is characterized in that: this second optical diaphragm group is greater than second liquid crystal panel.
3. double-screen liquid-crystal display device as claimed in claim 2, it is characterized in that: this light guide plate comprises an incidence surface, one first exiting surface and one second exiting surface, this first exiting surface is relative with second exiting surface, and this incidence surface links to each other with first exiting surface and second exiting surface.
4. double-screen liquid-crystal display device as claimed in claim 3 is characterized in that: comprise that further one is arranged at the light source of incidence surface one side of light guide plate.
5. double-screen liquid-crystal display device as claimed in claim 4 is characterized in that: the reflecting surface of this reflector plate is towards second exiting surface of this light guide plate.
6. double-screen liquid-crystal display device as claimed in claim 4 is characterized in that: this reflector plate is the half-transparent half-reflection film.
7. double-screen liquid-crystal display device as claimed in claim 4 is characterized in that: this reflector plate is the black and white adhesive tape, and the white face of this black and white adhesive tape is towards second exiting surface of light guide plate.
8. as each described double-screen liquid-crystal display device among the claim 1-7, it is characterized in that: comprise that further a diffusion sheet is arranged between this reflector plate and the light guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510120966XA CN100414390C (en) | 2005-12-17 | 2005-12-17 | Double-screen liquid-crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200510120966XA CN100414390C (en) | 2005-12-17 | 2005-12-17 | Double-screen liquid-crystal display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1982975A CN1982975A (en) | 2007-06-20 |
| CN100414390C true CN100414390C (en) | 2008-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200510120966XA Expired - Fee Related CN100414390C (en) | 2005-12-17 | 2005-12-17 | Double-screen liquid-crystal display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100414390C (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040032388A1 (en) * | 2002-08-16 | 2004-02-19 | Toppoly Optoelectronics Corp. | Backlight device of a LCD display |
| JP2004362877A (en) * | 2003-06-03 | 2004-12-24 | Seiko Epson Corp | Lighting device, electro-optical device, manufacturing method of lighting device, manufacturing method of electro-optical device, and electronic apparatus |
| CN1580906A (en) * | 2003-08-08 | 2005-02-16 | 株式会社西铁城电子 | Double-sided lighting device |
-
2005
- 2005-12-17 CN CNB200510120966XA patent/CN100414390C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040032388A1 (en) * | 2002-08-16 | 2004-02-19 | Toppoly Optoelectronics Corp. | Backlight device of a LCD display |
| JP2004362877A (en) * | 2003-06-03 | 2004-12-24 | Seiko Epson Corp | Lighting device, electro-optical device, manufacturing method of lighting device, manufacturing method of electro-optical device, and electronic apparatus |
| CN1580906A (en) * | 2003-08-08 | 2005-02-16 | 株式会社西铁城电子 | Double-sided lighting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1982975A (en) | 2007-06-20 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080827 Termination date: 20191217 |