CN1627149A - Liquid crystal display - Google Patents
Liquid crystal display Download PDFInfo
- Publication number
- CN1627149A CN1627149A CN 200310112585 CN200310112585A CN1627149A CN 1627149 A CN1627149 A CN 1627149A CN 200310112585 CN200310112585 CN 200310112585 CN 200310112585 A CN200310112585 A CN 200310112585A CN 1627149 A CN1627149 A CN 1627149A
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- China
- Prior art keywords
- light
- lcd
- liquid crystal
- guide plate
- light guide
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Abstract
A LCD includes two LC panels set oppositely and a light source system between them constituting a pair of opposite light conduction plates, a double-face reflection sheet and a light source at the sidewall of said pair of light conduction plates, said LCD can display in double faces.
Description
[technical field]
The present invention relates to a kind of LCD, particularly a kind of LCD of double-sided display type.
[background technology]
LCD (Liquid Crystal Display, LCD) with it than conventional cathode ray tube (Cathode Ray Tube, CRT) the not available advantage of display technique can effectively reduce visual fatigue etc. as frivolous, no screen flicker, obtains broad development and application.
Traditional LCD as depicted in figs. 1 and 2, this LCD 1 comprises liquid crystal panel 100 and light-source system 180.Wherein liquid crystal panel 100 comprises upper substrate 111, infrabasal plate 112 and the liquid crystal layer 160 between upper substrate 111 and infrabasal plate 112.Upper substrate 111 contiguous liquid crystal layer 160 1 sides are sequentially provided with colored filter 120, transparency electrode 131 and alignment film 141, and upper substrate 111 arranged outside have last polaroid 151; Infrabasal plate 112 contiguous liquid crystal layer 160 1 sides are sequentially provided with transparency electrode 132 and alignment film 142, and infrabasal plate 112 arranged outside have following polaroid 152.This light-source system 180 is positioned at down polaroid 152 outsides, diffusion sheet 182 and light collecting device 183, the light source 185 that is positioned at light guide plate 181 sides and light source reflecting housing 186 that it comprises light guide plate 181, is positioned at the reflector plate 184 of light guide plate 181 downsides, be provided with in regular turn at light guide plate 181 upsides.
During this LCD 1 work, the light process that light-source system 180 sends polaroid 152 down becomes polarized light, and this polarized light penetrates through infrabasal plate 112, liquid crystal layer 160, upper substrate 111 and last polaroid 151.Make LCD 1 show different contents by external drive system.
Common LCD all has only one side to show, but many open spaces, as the computing machine classroom of library, production scene, school etc., when needing a large amount of displays to move simultaneously, the big quantity space that display is shared and required a large amount of expenses will become a big problem.
[summary of the invention]
For overcoming the defective that the prior art LCD can't realize double-sided display, the invention provides a kind of LCD of double-sided display type.
The technical scheme that technical solution problem of the present invention is adopted is: a kind of LCD is provided, it comprises two light-source systems of liquid crystal panel and between this two liquid crystal panel that are provided with relatively, and this light-source system comprises that the light guide plate, of pair of opposing is positioned at this to the double-sided reflecting sheet between light guide plate and at least one light source that is positioned at this to the light guide plate sidewall.
Compared to prior art, LCD provided by the invention is with two liquid crystal panel combinations, light-source system is set therebetween, in this light-source system, the light that light source sends enters two light guide plate from the incidence surface of two light guide plate respectively, the double-sided reflecting sheet that is provided with between two light guide plate can reflect light respectively, thereby makes light penetrate respectively in the opposite direction from the exiting surface of two light guide plate, obtains the uniform light of two liquid crystal panels of directive respectively.Two liquid crystal panels adopt external drive systems respectively, make two faces of this LCD can show identical or different content simultaneously.This liquid crystal display device structure compactness can effectively be saved the space; Because two liquid crystal panels adopt same light source, but energy savings also effectively reduces cost.
[description of drawings]
Fig. 1 is a kind of diagrammatic cross-section of prior art LCD.
Fig. 2 is the diagrammatic cross-section of the light-source system of prior art LCD shown in Figure 1.
Fig. 3 is the three-dimensional exploded view of LCD first embodiment of the present invention.
Fig. 4 is the sectional exploded view of LCD shown in Figure 3 along the IV-IV direction.
Fig. 5 is the three-dimensional exploded view of LCD the embodiment of the present invention.
[embodiment]
First embodiment of LCD of the present invention as shown in Figure 3 and Figure 4, this LCD 3 comprises liquid crystal panel 301,302 and the light-source system 380 between this liquid crystal panel 301 and 302 that is oppositely arranged.This liquid crystal panel 301,302 is the liquid crystal panel of conventional liquid crystal.This light-source system 380 comprises wedge shape light guide plate 311 and 312, light source 341 and 342, the light source reflecting housing 3411 and 3421 that is complementary with light source 341 and 342 respectively, double-sided reflecting sheet 350, diffusion sheet 321 and 322 and brightening piece 331,332,333,334.This wedge shape light guide plate 311 and 312 comprise incidence surface 3417 and 3427, with incidence surface 3417 and 3427 adjacent exiting surfaces 3418 and 3428, with this exiting surface 3418 and 3428 relative faces are bottom surface (signs).This wedge shape light guide plate 311 and 312 bottom surface are oppositely arranged, and are positioned at that this two light guide plate 311 and 312 s' double-sided reflecting sheet 350 is common to constitute a pair ofs to light guide plate.
During LCD 3 work, the light part that light source 341,342 sends is directly injected light guide plate 311,312 respectively from the incidence surface of light guide plate 311,312, and another part enters light guide plate 311,312 through the reflection of light source reflecting housing 3411 and 3421 from incidence surface 3417 and 3427.Enter the reflex of the light of light guide plate 311 and 321 through double-sided reflecting sheet 350, penetrate from exiting surface 3418 and 3428 respectively, through the diffusion of diffusion sheet 321,322 and the light harvesting effect of brightening piece 331,332,333,334, obtain the light of uniform directive liquid crystal panel 301 and 302.
Liquid crystal panel 301,302 is respectively by external drive systems, the uniform light that light-source system sends provides planar light source for liquid crystal panel 301,302, make this liquid crystal panel 301,302 can realize the function of single LCD respectively, show identical or different content from tow sides.
Seeing also Fig. 5, is the schematic perspective view of LCD second embodiment of the present invention.The realization principle of this LCD 5 is similar to LCD 3, is with the first embodiment difference: the light guide plate 511,512 of this LCD 5 is plate shaped, and the two is oppositely arranged, and is provided with double-sided reflecting sheet 550 therebetween.
During LCD 5 work, the light that light source sends enters light guide plate 511,512 respectively from the incidence surface of light guide plate 511,512, double-sided reflecting through double-sided reflecting sheet 550, light penetrates from the exiting surface of light guide plate 511,512 respectively, through the diffusion of diffusion sheet and the light harvesting effect of brightening piece, can obtain the light of uniform directive liquid crystal panel.Through external drive systems effect, this LCD 5 can realize double-sided display.
It is described that LCD of the present invention is not limited to above-mentioned embodiment, for example directly forms groove and realize that the light harvesting work is in order to save brightening piece etc. on light guide plate.In addition, adopt different liquid crystal panels, LCD of the present invention can be applicable to the double-sided display of reflective liquid-crystal display, semi-transmission semi-reflection LCD or penetrating LCD.
Claims (6)
1. LCD, comprise two light-source systems of liquid crystal panel and between this two liquid crystal panel that are provided with relatively, it is characterized in that: this light-source system comprises that the light guide plate, of pair of opposing is positioned at this to the double-sided reflecting sheet between light guide plate and at least one light source that is positioned at this to the light guide plate sidewall.
2. LCD as claimed in claim 1 is characterized in that: this light guide plate is a wedge shape or plate shaped.
3. LCD as claimed in claim 1 is characterized in that: this light source is cold-cathode fluorescence lamp or light emitting diode.
4. LCD as claimed in claim 1 is characterized in that: this light-source system also comprise one at this to the diffusion sheet between one of light guide plate and the corresponding liquid crystal panel.
5. LCD as claimed in claim 4 is characterized in that: this light-source system also comprises two brightening pieces, and this two brightening piece lays respectively between this diffusion sheet and the corresponding liquid crystal panel.
6. LCD as claimed in claim 5 is characterized in that: there are U-shaped or v-depression in this two brightening pieces surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310112585 CN1627149A (en) | 2003-12-08 | 2003-12-08 | Liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310112585 CN1627149A (en) | 2003-12-08 | 2003-12-08 | Liquid crystal display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1627149A true CN1627149A (en) | 2005-06-15 |
Family
ID=34759829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310112585 Pending CN1627149A (en) | 2003-12-08 | 2003-12-08 | Liquid crystal display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1627149A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101644852A (en) * | 2009-09-02 | 2010-02-10 | 康佳集团股份有限公司 | Double-side liquid crystal display screen |
| CN101303470B (en) * | 2007-05-09 | 2011-06-01 | 奇美电子股份有限公司 | Display apparatus of two-sided screen |
| CN102095168A (en) * | 2009-12-11 | 2011-06-15 | 鸿富锦精密工业（深圳）有限公司 | Backlight module and light guide plate thereof |
| CN102537732A (en) * | 2010-12-21 | 2012-07-04 | Lg伊诺特有限公司 | Lighting module |
| WO2013152701A1 (en) * | 2012-04-11 | 2013-10-17 | 联想(北京)有限公司 | Dual screen display device, dual screen display method, and electronic equipment |
| CN107003471A (en) * | 2014-11-28 | 2017-08-01 | 首尔伟傲世有限公司 | Use LED two-sided planar light source device |
| CN113341614A (en) * | 2021-06-17 | 2021-09-03 | 南京中电熊猫照明有限公司 | Ultrathin double-sided display backlight module and double-sided display device |
-
2003
- 2003-12-08 CN CN 200310112585 patent/CN1627149A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101303470B (en) * | 2007-05-09 | 2011-06-01 | 奇美电子股份有限公司 | Display apparatus of two-sided screen |
| CN101644852A (en) * | 2009-09-02 | 2010-02-10 | 康佳集团股份有限公司 | Double-side liquid crystal display screen |
| CN102095168A (en) * | 2009-12-11 | 2011-06-15 | 鸿富锦精密工业（深圳）有限公司 | Backlight module and light guide plate thereof |
| CN102537732A (en) * | 2010-12-21 | 2012-07-04 | Lg伊诺特有限公司 | Lighting module |
| WO2013152701A1 (en) * | 2012-04-11 | 2013-10-17 | 联想(北京)有限公司 | Dual screen display device, dual screen display method, and electronic equipment |
| CN103376588A (en) * | 2012-04-11 | 2013-10-30 | 联想(北京)有限公司 | Double-screen display device, double-screen display method and electronic equipment |
| US9830122B2 (en) | 2012-04-11 | 2017-11-28 | Lenovo (Beijing) Co., Ltd. | Dual screen display apparatus, dual screen display method, and electronic device |
| CN107003471A (en) * | 2014-11-28 | 2017-08-01 | 首尔伟傲世有限公司 | Use LED two-sided planar light source device |
| US10293067B2 (en) | 2014-11-28 | 2019-05-21 | Seoul Viosys Co., Ltd. | Two-sided, surface light source device using LED |
| CN110806615A (en) * | 2014-11-28 | 2020-02-18 | 首尔伟傲世有限公司 | Double-sided light source device using LED |
| CN107003471B (en) * | 2014-11-28 | 2020-03-20 | 首尔伟傲世有限公司 | Double-sided light source device using LED |
| CN113341614A (en) * | 2021-06-17 | 2021-09-03 | 南京中电熊猫照明有限公司 | Ultrathin double-sided display backlight module and double-sided display device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |