CN1322362C - LCD with dual-side displaying - Google Patents
LCD with dual-side displaying Download PDFInfo
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- CN1322362C CN1322362C CNB2004100325387A CN200410032538A CN1322362C CN 1322362 C CN1322362 C CN 1322362C CN B2004100325387 A CNB2004100325387 A CN B2004100325387A CN 200410032538 A CN200410032538 A CN 200410032538A CN 1322362 C CN1322362 C CN 1322362C
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Abstract
The present invention discloses a liquid crystal display with dual-side display, which comprises a liquid crystal box, a light source device and an optical film, wherein the light source device is arranged at the front side of the liquid crystal box for providing a light transmitting liquid crystal box; the optical film is arranged at the back side of the liquid crystal box and corresponds to the light source device. When light penetrates through the liquid crystal box, the optical film is used as a reflecting layer to cause the front side of the liquid crystal box to be in a reflection mode to display information, and the optical film is also used as a light transmitting layer to cause the back side of the liquid crystal box to be in a light transmission mode to display information.
Description
Technical field
The present invention relevant for a kind of liquid crystal indicator (liquid crystal display, LCD), particularly relevant for a kind of liquid crystal indicator that can make to show (dual-sided viewable) at the tow sides of liquid crystal panel.
Background technology
Because LCD (LCD) has advantages such as frivolous, power saving, be widely used at present on the electronic products such as Portable personal computer, digital camera, projector, PDA(Personal Digital Assistant) and mobile phone with as its display screen.No matter LCD adopts transmission-type or reflective display mode, be single face and show.
Yet along with constantly upwards development of electronic product, display data has become the demand of many products on the positive and negative two sides of display screen.For example be present at the folding type mobile phone (foldertype mobile phone) that occurs on the market, it respectively has a LCD Panel on the inside and outside both sides of outer cover.
When making the electronic product of this type of tool double-sided display traditionally, general way is to use two groups of display panels as main framework, in order to show the data on positive and negative two sides respectively.Just because of this, said method must provide two groups of driving circuits to drive above-mentioned two display panels independently.Except the thickness that makes product and weight increase, make that also manufacturing cost improves relatively, and do not meet the demand of mobile electronic product.
United States Patent (USP) the 6th, 580 discloses a kind of LCD of double-sided display No. 488, and it only utilizes a display panels, and cooperates local mode of covering, and makes the positive and negative both sides of display panels can be in reflective-mode and shows.Yet this kind mode certainly will be dwindled the viewing area size of the positive and negative both sides of display panels, or must increase the size of whole display panels.
Summary of the invention
In view of this, the object of the present invention is to provide a kind of lCD with dual-side displaying, it utilizes single display panels framework to realize the demand of mobile electronic product.
Another object of the present invention is to provide a kind of lCD with dual-side displaying, it has the display mode of reflective-mode and transmission mode simultaneously, and the size that need not to dwindle liquid crystal indicator double-edged viewing area size or increase liquid crystal indicator.
In order to reach above-mentioned purpose, the invention provides a kind of lCD with dual-side displaying, it comprises: one first substrate, one second substrate, a liquid crystal layer, one first polaroid, a light supply apparatus, a blooming, and one second polaroid.Second substrate and first substrate are oppositely arranged, and liquid crystal layer is located between first substrate and second substrate.First polaroid is arranged on first substrate and is relative with liquid crystal layer.Light supply apparatus is arranged on first polaroid and is relative with first substrate, in order to a light transmission liquid crystal layer to be provided.Blooming is arranged on second substrate and is relative with liquid crystal layer.Second polaroid is arranged on the blooming and is relative with second substrate.When light when first polaroid sees through liquid crystal layer, utilize blooming as the reflection horizon, make the substrate-side of winning be in reflective-mode and show, and utilize blooming as transmission layer, make second substrate-side be in transmission mode and show.
Wherein, above-mentioned lCD with dual-side displaying also comprises two compensation film for angular field of view, one is arranged on first polaroid and is relative with first substrate, and another then is arranged on second polaroid and is relative with second substrate, or is arranged between the blooming and second substrate.
According to above-mentioned purpose, the invention provides a kind of lCD with dual-side displaying again, it comprises: one first substrate, one second substrate, a liquid crystal layer, first and second polaroid and first and second back lighting device.Second substrate and first substrate are oppositely arranged, and liquid crystal layer is located between first substrate and second substrate.First and second polaroid is arranged at respectively on first substrate and second substrate and is relative with liquid crystal layer respectively.First and second back lighting device is arranged on first polaroid and second polaroid respectively and first back lighting device is relative with first substrate and second back lighting device is relative with second substrate, in order to provide a light to see through liquid crystal layer, make second substrate-side or first substrate-side be in transmission mode and show from first polaroid or second polaroid.
Wherein, above-mentioned lCD with dual-side displaying also comprises two compensation film for angular field of view, and one is arranged on first polaroid and is relative with first substrate, and another then is arranged on second polaroid and is relative with second substrate.
For above-mentioned purpose of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and in conjunction with the accompanying drawings, be described in detail below:
Description of drawings
Fig. 1 a is the show state of expression first embodiment of the invention lCD with dual-side displaying and one side.
Fig. 1 b is the show state of expression first embodiment of the invention lCD with dual-side displaying and another opposite side thereof.
Fig. 2 a is the show state of expression second embodiment of the invention lCD with dual-side displaying and one side.
Fig. 2 b is the show state of expression second embodiment of the invention lCD with dual-side displaying and another opposite side thereof.
The reference numeral explanation:
100,200～liquid crystal indicator; 101,201～liquid crystal cell; 102,202～the first substrates; 104,204～the second substrates; 106,206～liquid crystal layer; 108,114～polaroid; 109,209,115,215～compensation film for angular field of view; 110～light supply apparatus; 110a～reflected light; 110b～transmitted light; 112～blooming; 116,216～control device; 208～the first polaroids; 210～the first back lighting devices; 210a, 214a～light; 212～the second polaroids; 214～the second back lighting devices.
Embodiment
First embodiment
LCD with dual-side displaying below in conjunction with Fig. 1 a and Fig. 1 b explanation first embodiment of the invention.
With reference to Fig. 1 a, it represents lCD with dual-side displaying.This liquid crystal indicator 100 comprises: a liquid crystal cell (LC cell) 101, two polaroids 108 and 114, one light supply apparatus 110, a blooming 112, an and control device 116.Liquid crystal cell 101 comprises one first substrate 102, one second substrate 104, reaches a liquid crystal layer 106.First and second substrate 102 and 104 is transparency carriers, for example glass or quartz base plate, and two substrates 102 and 104 parallel being oppositely arranged.Generally speaking, first and second substrate 102 and 104 both substrate front side wherein are provided with optical filter (color filter, CF) (be commonly referred to filter sheet base plate), and the front of another substrate is formed with a plurality of transistor (not shown)s and corresponding pixel electrode (not shown) (being commonly referred to array (array) substrate).Two substrates 102 and 104 front are toward each other.Liquid crystal layer 106 is located between first substrate, 102 fronts and second substrate, 104 fronts to constitute liquid crystal cell 101.Herein, liquid crystal mode can be twisted nematic (twisted nematic, TN), vertically to row (verticalalignment, VA), switch (in-plane switching in the face, ICP), optical compensation curved (opticallycompensated bend, OCB), and other available liquid crystal mode to show.
Polaroid 108 is arranged at first substrate 102
On the back sideAnd it is relative with liquid crystal layer 106.Then, a compensation film for angular field of view 109 (being shown as the state of setting in present embodiment) is set on polaroid 108 optionally, makes it relative with first substrate 102.Light supply apparatus 110 be arranged on polaroid 108 or the compensation film for angular field of view 109 (present embodiment is shown as the state that is disposed on the compensation film for angular field of view 109) and relative with first substrate 102 equally (promptly, polaroid 108, compensation film for angular field of view 109, light supply apparatus 110 are arranged at the dorsal part of first substrate 102 in regular turn), it provides a light to see through the usefulness of liquid crystal layer 106 for display image via polaroid 108.
Blooming 112 is arranged on the back side of second substrate 104 and is relative with liquid crystal layer 106.Herein, blooming 112 has the function with light partial reflection and part transmission, for example pellicle beamsplitter (beamsplitter) or brightness enhancement film.Moreover a polaroid 114 is arranged on the blooming 112, and it is relative with second substrate 104.In addition, one compensation film for angular field of view 115 (being shown as the state of setting in present embodiment) optionally is set on polaroid 114, and it is 104 relative with second substrate (that is, blooming 112, polaroid 114, and compensation film for angular field of view 115 be arranged at the dorsal part of second substrate 104 in regular turn).Perhaps, this compensation film for angular field of view 115 (not shown)s optionally are set between the blooming 112 and second substrate 104.
Again, when above-mentioned blooming 112 is a brightness enhancement film, for with the light recycling promoting display brightness, major technique can be divided into retro-reflection formula (retroreflective) and two kinds of cholesterol liquid crystals reflective (cholesteric liquid crystal-based reflective).The polarisation kenel that the former mainly handles is P and S line style polarisation, and the latter then handles left-handed and the dextrorotation rotatory polarization.
" DBEF " (the dual brightness enhancement film) that is made by Minnesota Mining and Manufacturing Company is utilization retro-reflection formula technology, and this kind optical brightening membrane tolerable P line style polarizing transmission also reflects S line style polarisation.The S line style polarisation of reflection is got back to can change into behind the light supply apparatus again and is contained P and S line style polarisation, makes the brightness lifting with the effect that reaches the light recycling.In addition, be the reflective technology of utilization cholesterol liquid crystal by " NIPOCS " of Japan's day eastern electrician's manufacturing, the 50% dextrorotation rotatory polarization transmission of this kind optical brightening membrane tolerable is also reflected 50% left-handed rotatory polarization, to reach the effect of similar DBEF brightness enhancement film.
In the present embodiment, utilize blooming to can be the practice of pellicle beamsplitter or brightness enhancement film, utilize the partial reflection of this pellicle beamsplitter or brightness enhancement film and the characteristic of part transmitted light, it is arranged on second substrate 104.When the light of light supply apparatus 110 when viewing angle compensation film 109 sees through polaroid 108 and liquid crystal cell 101, utilize blooming 112 as the reflection horizon, part light reflexed to as the light supply apparatus 110 and the transmission of preceding light go out, make substrate 102 sides of winning be in reflective-mode and show.That is the observer can obtain image information by the reflected light 110a from blooming 112 reflections, as shown in Figure 1a.On the other hand, when the light of light supply apparatus 110 when viewing angle compensation film 109 sees through polaroid 108 and liquid crystal cell 101, blooming 112 also can be used as a transmission layer and with part light from as light supply apparatus backlight 110 transmissions go out, make second substrate, 104 sides be in transmission mode and show.That is the observer can obtain image information by the transmitted light 110b that sees through from blooming 112, shown in Fig. 1 b.Thus, liquid crystal indicator 100 according to the present invention can reach the purpose of double-sided display.
According to the lCD with dual-side displaying of present embodiment, owing to can utilize a blooming to reach the purpose of reflection and transmission mode demonstration as reflection horizon and transmission layer, so only need single liquid crystal cell just can realize the purpose of double-sided display.Compared to known two independent display panels frameworks, also possessed advantages such as lightening, low power consumption and be applicable to very much the mobile electronic product.Moreover, because the lCD with dual-side displaying of present embodiment has the display mode of reflection and transmission, so need not, must dwindle liquid crystal indicator double-edged viewing area size or increase the size of liquid crystal indicator as the two-sided display liquid crystal display device of known single display panels framework.
Second embodiment
LCD with dual-side displaying below in conjunction with Fig. 2 a and Fig. 2 b explanation second embodiment of the invention.
With reference to Fig. 2 a, it represents lCD with dual-side displaying.This liquid crystal indicator 200 comprises: a liquid crystal cell 201, first and second polaroid 208 and 212, first and second back lighting device 210 and 214, an and control device 216.Liquid crystal cell 201 comprises one first substrate 202, one second substrate 204, reaches a liquid crystal layer 206.First and second substrate 202 and 204 is transparency carriers, for example glass or quartz base plate, and two substrates is parallel is oppositely arranged.Generally speaking, first and second substrate 202 and 204 both substrate front side wherein are provided with optical filter (color filter, CF) (be commonly referred to filter sheet base plate), and the front of another substrate is formed with a plurality of transistor (not shown) and corresponding pixel electrode (not shown) (being commonly referred to array (array) substrate).Two substrates 102 and 104 front are toward each other.Liquid crystal layer 206 is located between first substrate 202 and second substrate 204 to constitute liquid crystal cell 201.Herein, liquid crystal mode can be TN, VA, ICP, OCB, reaches other available liquid crystal mode to show.
First and second polaroid 208 and 212 is arranged at respectively on the back side of first substrate 202 and second substrate 204 and is relative with liquid crystal layer 206 respectively.In addition, one compensation film for angular field of view 209 (being shown as the form of setting in present embodiment) optionally is set on first polaroid 208, and with first substrate 202 relative (that is, first polaroid 208 and compensation film for angular field of view 209 are arranged at the dorsal part of first substrate 202 in regular turn).Moreover, one compensation film for angular field of view 215 (being shown as the state of setting in present embodiment) optionally is set on second polaroid 212, and with second substrate 204 relative (that is, second polaroid 212 and compensation film for angular field of view 215 are arranged at the dorsal part of second substrate 204 in regular turn).
Then, first and second back lighting device 210 and 214 is arranged at respectively on compensation film for angular field of view 209 and the compensation film for angular field of view 215, make the back lighting device 210 of winning relative with first polaroid 208 and second back lighting device 214 is relative with second polaroid 212, in order to provide a light to see through liquid crystal cell 201, for the usefulness of display image from first polaroid 208 or second polaroid 212.
In the present embodiment, can open first light supply apparatus 210 and temporary close secondary light source device 214, light 210a is gone out through first polaroid 208, liquid crystal cell 201, second polaroid 212 and secondary light source device 214 and transmission in regular turn from viewing angle compensation film 209, make second substrate, 204 sides be in transmission mode and show.That is, utilize first light supply apparatus 210 to make the observer obtain image information in second substrate, 204 sides as a backlight, shown in 2a figure by light 210a.On the other hand, can open secondary light source device 214 and temporary close first light supply apparatus 210, light 214a is gone out through second polaroid 212, liquid crystal cell 201, first polaroid 208 and first light supply apparatus 210 and transmission in regular turn from viewing angle compensation film 215, make substrate 202 sides of winning be in transmission mode equally and show.That is, utilize secondary light source device 214 to make the observer obtain image information in first substrate, 202 sides as a backlight, shown in Fig. 2 b by light 214a.Thus, can reach the purpose of double-sided display equally according to liquid crystal indicator 200 of the present invention.
Similarly, control device 216 is coupled between first substrate 202 and second substrate 204, in order to the image sequential processing of control double-sided display, makes the observer obtain correct image information at different inspection surfaces.
According to the lCD with dual-side displaying of present embodiment,, equally only need single liquid crystal cell just can realize the purpose of double-sided display owing to can utilize two back lighting devices to reach the purpose that transmission mode shows as backlight successively.Moreover as described in first embodiment, the lCD with dual-side displaying of present embodiment need not as is well known as the two-sided display liquid crystal display device, must dwindle liquid crystal indicator double-edged viewing area size or increase the size of liquid crystal indicator.
Though the present invention discloses as above with preferred embodiment; yet it is not in order to limit the present invention; any those skilled in the art; without departing from the spirit and scope of the present invention; certainly can do to change and retouching, so protection scope of the present invention should be with being as the criterion that claim was defined.
Claims (6)
1. lCD with dual-side displaying comprises:
One first substrate;
One second substrate, this second substrate and this first substrate are oppositely arranged;
One liquid crystal layer, this liquid crystal layer be located in this first substrate and this second substrate between;
One first polaroid, this first polaroid are arranged on this first substrate and are relative with this liquid crystal layer;
One light supply apparatus, this light supply apparatus are arranged on this first polaroid and are relative with this first substrate, in order to provide a light transmission this liquid crystal layer;
One blooming, this blooming are arranged on this second substrate and are relative with this liquid crystal layer; And
One second polaroid, this second polaroid are arranged on this blooming and are relative with this second substrate.
Wherein this light utilizes this blooming as the reflection horizon when this first polaroid sees through this liquid crystal layer, makes this first substrate-side be in reflective-mode and shows, and utilize this blooming as transmission layer, makes this second substrate-side be in transmission mode and shows.
2. lCD with dual-side displaying as claimed in claim 1 is characterized in that: also comprise a compensation film for angular field of view, this compensation film for angular field of view is arranged on this first polaroid and is relative with this first substrate.
3. lCD with dual-side displaying as claimed in claim 1, it is characterized in that: also comprise a compensation film for angular field of view, this compensation film for angular field of view is arranged on this second polaroid and is relative with this second substrate, or is arranged between this blooming and this second substrate.
4. lCD with dual-side displaying as claimed in claim 1 is characterized in that: this blooming is one by the DBEF brightness enhancement film of U.S. 3M manufacturing or by the NIPOCS brightness enhancement film of Japan's day eastern electrician's manufacturing.
5. lCD with dual-side displaying as claimed in claim 1 is characterized in that: this blooming is a pellicle beamsplitter.
6. lCD with dual-side displaying as claimed in claim 1 is characterized in that: also comprise a control device, this control device is coupled between this first substrate and this second substrate, in order to the image sequential processing of control double-sided display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100325387A CN1322362C (en) | 2004-04-08 | 2004-04-08 | LCD with dual-side displaying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100325387A CN1322362C (en) | 2004-04-08 | 2004-04-08 | LCD with dual-side displaying |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1564064A CN1564064A (en) | 2005-01-12 |
| CN1322362C true CN1322362C (en) | 2007-06-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100325387A Expired - Fee Related CN1322362C (en) | 2004-04-08 | 2004-04-08 | LCD with dual-side displaying |
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| CN (1) | CN1322362C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019401A (en) * | 2013-02-28 | 2014-09-03 | 联想(北京)有限公司 | Backlight modules, double-display-screen structure and electronic equipment |
| CN106610546B (en) * | 2017-02-23 | 2020-04-17 | 宁波视睿迪光电有限公司 | Stereoscopic display device and control method thereof |
| CN114005368B (en) * | 2021-11-08 | 2023-12-29 | Tcl华星光电技术有限公司 | Display panel and display device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000193956A (en) * | 1998-12-25 | 2000-07-14 | Seiko Epson Corp | Liquid crystal display device and electronic equipment using same |
| JP2003008707A (en) * | 2001-06-25 | 2003-01-10 | Nec Access Technica Ltd | Mobile telephone set |
| JP2003161941A (en) * | 2001-09-14 | 2003-06-06 | Mitsubishi Electric Corp | Bi-planar liquid crystal display device and information equipment |
| US6580488B2 (en) * | 1999-06-17 | 2003-06-17 | Lg Electronics Inc. | Dual sided liquid crystal display device |
| CN1470045A (en) * | 2000-10-23 | 2004-01-21 | 摩托罗拉公司 | Double-sided viewable display with switchable transflector |
| CN1748175A (en) * | 2003-02-14 | 2006-03-15 | 三菱电机株式会社 | Liquid cristal display device and information device with the display device mounted in it |
-
2004
- 2004-04-08 CN CNB2004100325387A patent/CN1322362C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000193956A (en) * | 1998-12-25 | 2000-07-14 | Seiko Epson Corp | Liquid crystal display device and electronic equipment using same |
| US6580488B2 (en) * | 1999-06-17 | 2003-06-17 | Lg Electronics Inc. | Dual sided liquid crystal display device |
| CN1470045A (en) * | 2000-10-23 | 2004-01-21 | 摩托罗拉公司 | Double-sided viewable display with switchable transflector |
| JP2003008707A (en) * | 2001-06-25 | 2003-01-10 | Nec Access Technica Ltd | Mobile telephone set |
| JP2003161941A (en) * | 2001-09-14 | 2003-06-06 | Mitsubishi Electric Corp | Bi-planar liquid crystal display device and information equipment |
| CN1748175A (en) * | 2003-02-14 | 2006-03-15 | 三菱电机株式会社 | Liquid cristal display device and information device with the display device mounted in it |
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| CN1564064A (en) | 2005-01-12 |
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