CN1673821A - Planar display device - Google Patents
Planar display device Download PDFInfo
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- CN1673821A CN1673821A CN 200410026705 CN200410026705A CN1673821A CN 1673821 A CN1673821 A CN 1673821A CN 200410026705 CN200410026705 CN 200410026705 CN 200410026705 A CN200410026705 A CN 200410026705A CN 1673821 A CN1673821 A CN 1673821A
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- polaroid
- display apparatus
- flat display
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Abstract
The planar display device includes the first transparent substrate, the second transparent substrate, the third transparent substrate, one liquid crystal layer, the first transparent electrode, the second transparent electrode, the first polarizing chip and the second polarizing chip. The liquid crystal layer is set between the first transparent substrate and the second transparent substrate, the first transparent electrode and the second transparent electrode are set between the second transparent substrate and the third transparent substrate, and the second polarizing chip is set on the inner surface of the second transparent substrate.
Description
[technical field]
The invention relates to a kind of flat display apparatus, particularly about the flat display apparatus of a kind of contact panel (Touch Panel) and LCD combination.
[background technology]
Contact panel is configured in LCD or negative electrode kinescope usually, and (Cathode RayTube on surface CRT), allows the user see through indication on the screen-picture with touch-control desired locations such as finger or nibs, carries out the input of order with this.Seeing also Fig. 1, is a kind of structural representation of prior art contact panel.This contact panel 1 comprises two first glass substrate 2 and second glass substrates 3 that are provided with relatively, first transparency electrode 4 is arranged on the inner surface of first glass substrate 2, second transparency electrode 5 is arranged on the inner surface of second glass substrate 3, and a plurality of somes partitions (Dot Spacer) 6 are arranged between first transparency electrode 4 and second transparency electrode 5.When carrying out input action, finger or nib touch-control desired location, produce pressure and cause first transparency electrode 4 of this position and the change in voltage of second transparency electrode 5, the position that predicts its change in voltage and calculate this contact point via control system (figure does not show) input of being correlated with.
The flat display apparatus of a kind of contact panel of prior art and LCD combination can be consulted No. the 573rd, 180, the TaiWan, China patent of on January 21st, 2004 bulletin, as shown in Figure 2.This flat display apparatus 60 comprises that two first transparency carriers 18 that relatively are provided with and second transparency carrier 32, are distributed in liquid crystal layer 26, one three transparency carrier 46 relative with second transparency carrier, 32 outer surfaces between this first transparency carrier 18 and second transparency carrier 32.
A plurality of thin film transistor (TFT)s 20 are arranged on the inner surface of this first transparency carrier 18, and a protective seam 22 covers the inner surface of these a plurality of thin film transistor (TFT)s 20 and first transparency carrier 18, and first transparency electrode 24 is arranged on this protective seam 22.Colored filter 30 is arranged on the inner surface of second transparency carrier 32, second transparency electrode 28 is arranged on the inner surface of this colored filter 30 and second transparency carrier 32, and the inner surface of the outer surface of this second transparency carrier 32 and the 3rd transparency carrier 46 is respectively arranged with the 3rd transparency electrode 42 and the 4th transparency electrode 44.The outer surface of the outer surface of this first transparency carrier 18 and the 3rd transparency carrier 46 is respectively arranged with first polaroid 16 and second polaroid 36.Backlight module 10 closes on the outer surface setting of this first polaroid 16, and this backlight module 10 comprises light guide plate 11, light source 12 and reflector plate 14.
Because second transparency carrier 32 of this flat display apparatus 60 serves as the following transparency carrier of contact panel and the last transparency carrier of LCD simultaneously, therefore need to use the flat display apparatus of a transparency carrier respectively with respect to the last transparency carrier of the following transparency carrier of contact panel and LCD, the advantage that this flat display apparatus 60 has gently, approaches, cost is low.
But, because this second polaroid 36 is arranged on the outer surface of the 3rd transparency carrier 46, when carrying out input action, user's finger or nib can directly touch this second polaroid 36, therefore this second polaroid 36 shortens the serviceable life of this flat display apparatus 60 easily by scratch.And this two polaroid 16,36 adopts the outer set-up mode that pastes in the flat display apparatus 60, the polarized light of the light that backlight module 10 sends gained after 16 effects of first polaroid needs can arrive second polaroid 36 through behind this colored filter 30 earlier, 30 pairs of polarized lights that pass wherein of colored filter produce certain scattering process, thereby formed polarized light after polaroid 16 effect damaged, reduce the polarisation efficient and the light transmittance of flat display apparatus 60, influence its image display quality.
The polaroid 16,36 that this flat display apparatus 60 adopts is generally ordinary light polarization-type polaroid (Ordinary Type Polarizer), and the polarized light property of this kind ordinary light polarization-type polaroid is: the incident light of ordinary polarization state can pass; When passing, the incident light of extraordinary polarization state will be absorbed.The main material of this polaroid 16,36 is that (PolyvinylAlcohol PVA), because the PVA resistance to elevated temperatures is relatively poor, be no more than 80 ℃ usually, thereby flat display apparatus 60 is not suitable for using polyvinyl alcohol (PVA) under the environment of higher temperature.The two ordinary light polarization-type polaroids that use is orthogonally set 16,36 o'clock, the contrast of image can sharply reduce (as shown in Figure 3) along with the increase of viewing angle, thereby produces angle limitations; And the two ordinary light polarization-type polaroids that use is orthogonally set 16,36 o'clock, this flat display apparatus 60 influences the image display quality the light leak of 0 degree angle, an angle of 90 degrees, 180 degree angles, 270 degree angles and near zone thereof comparatively serious (seeing also the light areas of Fig. 4).
[summary of the invention]
In order to overcome prior art flat display apparatus short, the not good defective of image display quality in serviceable life, the invention provides a kind of long service life, the preferable flat display apparatus of image display quality.
A kind of flat display apparatus, it comprises first transparency carrier, second transparency carrier, the 3rd transparency carrier, a liquid crystal layer, first transparency electrode and second transparency electrode, first polaroid and second polaroid, this liquid crystal layer is arranged between this first transparency carrier and this second transparency carrier, this first transparency electrode and second transparency electrode are separately positioned between this second transparency carrier and the 3rd transparency carrier, and wherein second polaroid is arranged on the inner surface of second transparency carrier.
Two polaroids of flat display apparatus of the present invention can all adopt extraordinary ray polarization-type polaroid, and this two polaroid is separately positioned on the inner surface of first transparency carrier and second transparency carrier; Or adopt an extraordinary ray polarization-type polaroid and ordinary light polarization-type polaroid collocation to use, wherein this extraordinary ray polarization-type polaroid is arranged on the inner surface of second transparency carrier.
Compare with prior art, flat display apparatus of the present invention has following advantage: polaroid adopts the set-up mode that is built in corresponding substrate inboard, is difficult for by scratch the long service life of flat display apparatus; Polaroid adopts extraordinary ray polarization-type polaroid, the chemically-resistant solvent, and also heat resisting temperature reaches 200 ℃, and make flat display apparatus all can obtain higher contrast in bigger angular field of view, effectively improve its image display quality; Adopt a built-in extraordinary ray polarization-type polaroid and an ordinary light polarization-type polaroid to arrange in pairs or groups when using, because the mutually orthogonal extraordinary ray polarization-type polaroid and the optical axis of ordinary light polarization-type polaroid are orthogonal, light leak to incident light be able to be complementary, can compensate the light leakage phenomena of flat display apparatus in scope with great visual angle, further promote the image display quality of flat display apparatus.
[description of drawings]
Fig. 1 is the structural representation of prior art contact panel.
Fig. 2 is the structural representation of the flat display apparatus of the contact panel of prior art and LCD combination.
Fig. 3 is that prior art is used the contrast response curve synoptic diagram of the flat display apparatus of ordinary light polarization-type polaroid in the different visual angles scope.
Fig. 4 is the flat display apparatus light leak characteristic synoptic diagram that prior art is used ordinary light polarization-type polaroid.
Fig. 5 is the structural representation of flat display apparatus first embodiment of the present invention.
Fig. 6 is that the present invention adopts the contrast response curve synoptic diagram of the flat display apparatus of extraordinary ray polarization-type polaroid in the different visual angles scope.
Fig. 7 is the structural representation of flat display apparatus second embodiment of the present invention.
Fig. 8 is the flat display apparatus light leak characteristic synoptic diagram of the extraordinary ray polarization-type polaroid that adopts of the present invention.
Fig. 9 is the structural representation of flat display apparatus the 3rd embodiment of the present invention.
[embodiment]
Seeing also Fig. 5, is the structural representation of flat display apparatus first embodiment of the present invention.This flat display apparatus 160 comprises that two first transparency carriers 118 that relatively are provided with and second transparency carrier 132, liquid crystal layer 126 are distributed between this first transparency carrier 118 and second transparency carrier 132, three transparency carrier 146 relative with second transparency carrier, 132 outer surfaces.
A plurality of thin film transistor (TFT)s 120 are arranged on the inner surface of this first transparency carrier 118; first polaroid 116 covers the inner surface of these a plurality of thin film transistor (TFT)s 120 and first transparency carrier 118; one protective seam 122 is arranged on this first polaroid 116, and first transparency electrode 124 is arranged on this protective seam 122.Colored filter 130 is arranged on the inner surface of second transparency carrier 132, and second transparency electrode 128 is arranged on the inner surface of this colored filter 130, and second polaroid 136 is provided with on this second transparency electrode 128.The inner surface of the outer surface of this second transparency carrier 132 and the 3rd transparency carrier 146 is respectively arranged with the 3rd transparency electrode 142 and the 4th transparency electrode 144.
This transparency electrode 124,128,142 and 144 by tin indium oxide (Indium Tin Oxide, ITO) or indium zinc oxide (Indium Zinc Oxide IZO) waits transparent conductive material to make.When carrying out input action, finger or nib touch-control desired location, produce pressure and cause the 3rd transparency electrode 142 of this position and the change in voltage of the 4th transparency electrode 144, predict its change in voltage and calculate this contacting points position via control system (figure does not show), and the switch of control relevant position thin film transistor (TFT) 120 is to reach the purpose of the input of being correlated with.
This first polaroid 116 and the 136 quadrature settings of second polaroid, both polarization directions are vertical mutually.This two polaroid 116,136 is extraordinary ray polarization-type polaroid (Extraordinary Type Polarizer), it is made by the organic dyestuff with liquid crystal phase (Liquid-crystallinePhase), its polarized light property is: the incident light of extraordinary polarization state can pass this polaroid 116,136, and the incident light of ordinary polarization state passes this polaroid and will be absorbed in 116,136 o'clock.The thickness of this two polaroid 116,136 is generally less than 100 microns, and thinner thickness is not so when this two polaroid 116,136 is separately positioned on corresponding substrate 118,132 inner surfaces, can cause harmful effect to the operating voltage of flat display apparatus 160.
Please consult Fig. 3 and Fig. 6 together, Fig. 6 is the contrast response curve synoptic diagram of the flat display apparatus of the extraordinary ray polarization-type polaroid that adopts of the present invention in the different visual angles scope, and it is less that this curve display goes out the amplitude of variation of flat display apparatus 160 of the present invention (-50 degree angles are to+50 degree angles approximately) contrast in scope with great visual angle.Adopt the flat display apparatus of ordinary light polarization-type polaroid to compare as can be known from this curve and Fig. 3 at the contrast response curve of different visual angles scope, the ordinary light polarization-type polaroid that flat display apparatus 160 of the present invention adopts built-in extraordinary ray polarization-type polaroid 116,136 to replace traditional external labeling type has following advantage: when using extraordinary ray polarization-type polaroid, compare traditional ordinary light polarization-type polaroid, it all can obtain higher contrast in bigger angular field of view, thereby promotes the display quality of flat display apparatus 160 images.
This two polaroid 116,136 is arranged on the homonymy of colored filter 130, polarized light need not just enter second polaroid 136 through behind the colored filter 130, can eliminate destruction and the scattering of colored filter to polarized light, improve polarisation efficient and light transmittance, thereby can further promote the image display quality of flat display apparatus 160; And this employing is built in the set-up mode of corresponding substrate inboard, makes this two polaroid 116,136 be difficult for by scratch the long service life of flat display apparatus 160.Traditional in addition general heat resisting temperature of ordinary light polarization-type polaroid only is 80 ℃, non-refractory, and extraordinary ray polarization-type polaroid 116,136 heat resisting temperatures that the present invention adopts are 200 ℃, so flat display apparatus 160 is more high temperature resistant; And extraordinary ray polarization-type polaroid 116,136 thinner thicknesses own make this flat display apparatus 160 more frivolous.Can directly two polaroids 116,136 be plated on the corresponding substrate 118,132 in the processing procedure of this flat display apparatus 160, can save tradition and adopt a large amount of artificial outer costs that paste polaroid 116,136.
Seeing also Fig. 7, is the structural representation of flat display apparatus second embodiment of the present invention.The structure of this flat display apparatus 260 and flat display apparatus 160 is roughly the same, and the difference of itself and flat display apparatus 160 is: this first polaroid 216 is arranged on the outer surface of flat display apparatus 260 first transparency carriers 218.This first polaroid 216 is ordinary light polarization-type polaroids, and second polaroid 236 is extraordinary ray polarization-type polaroids, and it is arranged on the inner surface of second transparency electrode 228.
Please consult Fig. 4 and Fig. 8 together, Fig. 8 is the light leak characteristic synoptic diagram that first embodiment of the invention adopts the extraordinary ray polarization-type polaroid flat display apparatus 160 of two mutual quadratures, adopt the flat display apparatus 60 light leak characteristic synoptic diagram of two mutual quadrature ordinary light polarization-type polaroids to contrast mutually with Fig. 4, adopt the optical axis of mutually orthogonal extraordinary ray polarization-type polaroid and ordinary light polarization-type polaroid orthogonal as can be known, the combination of extraordinary ray polarization-type polaroid and ordinary light polarization-type polaroid can be complementary to the light leak of incident light wave.Thereby arrange in pairs or groups when using an extraordinary ray polarization-type polaroid and an ordinary light polarization-type polaroid in the flat display apparatus 260 of second embodiment of the invention, can significantly be reduced in the interior light leak amplitude of scope with great visual angle, further improve the image display quality of flat display apparatus 260.
Certainly, if only need flat display apparatus to obtain preferable image display quality, and do not consider that whether polaroid during to the destruction of polarized light and scattering, is seen also Fig. 9 by scratch, colored filter easily, be the structural representation of flat display apparatus the 3rd embodiment of the present invention.The structure of this flat display apparatus 360 and flat display apparatus 160 is roughly the same, and the difference of itself and flat display apparatus 160 is: this second polaroid 336 is arranged on the outer surface of flat display apparatus 360 the 3rd transparency carrier 346.This second polaroid 336 is ordinary light polarization-type polaroids, and first polaroid 316 is extraordinary ray polarization-type polaroids, and it is arranged on the inner surface of a plurality of thin film transistor (TFT)s 320 and first transparency carrier 318.
Claims (10)
1. flat display apparatus, comprise first transparency carrier, second transparency carrier, the 3rd transparency carrier, a liquid crystal layer, first transparency electrode and second transparency electrode, first polaroid and second polaroid, this liquid crystal layer is arranged between this first transparency carrier and this second transparency carrier, this first transparency electrode and second transparency electrode are separately positioned between this second transparency carrier and the 3rd transparency carrier, it is characterized in that: second polaroid is arranged on the inner surface of second transparency carrier.
2. flat display apparatus as claimed in claim 1 is characterized in that: this two polaroid all is an extraordinary ray polarization-type polaroid.
3. flat display apparatus as claimed in claim 2 is characterized in that: this first polaroid is arranged on the inner surface of this first transparency carrier.
4. flat display apparatus as claimed in claim 3 is characterized in that: between this first transparency carrier inner surface and this first polaroid a plurality of thin film transistor (TFT)s are set.
5. flat display apparatus as claimed in claim 4 is characterized in that: on this first polaroid a protective seam is set.
6. flat display apparatus as claimed in claim 5 is characterized in that: the 3rd transparency electrode is set on this protective seam.
7. flat display apparatus as claimed in claim 3 is characterized in that: between the inner surface of this second transparency carrier and second polaroid colored filter is set also.
8. flat display apparatus as claimed in claim 7 is characterized in that: between this second polaroid and this colored filter the 4th transparency electrode is set.
9. flat display apparatus as claimed in claim 1 is characterized in that: this second polaroid is an extraordinary ray polarization-type polaroid, and first polaroid is an ordinary light polarization-type polaroid.
10. flat display apparatus as claimed in claim 9 is characterized in that: this first polaroid is arranged on outside this first transparency carrier on the side surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410026705 CN1673821A (en) | 2004-03-27 | 2004-03-27 | Planar display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410026705 CN1673821A (en) | 2004-03-27 | 2004-03-27 | Planar display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1673821A true CN1673821A (en) | 2005-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410026705 Pending CN1673821A (en) | 2004-03-27 | 2004-03-27 | Planar display device |
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| Country | Link |
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| CN (1) | CN1673821A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102455545A (en) * | 2010-10-25 | 2012-05-16 | 奥博特瑞克斯株式会社 | Liquid crystal display device |
| CN102636905A (en) * | 2012-04-16 | 2012-08-15 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and liquid crystal display device |
-
2004
- 2004-03-27 CN CN 200410026705 patent/CN1673821A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102455545A (en) * | 2010-10-25 | 2012-05-16 | 奥博特瑞克斯株式会社 | Liquid crystal display device |
| CN102455545B (en) * | 2010-10-25 | 2016-06-29 | 奥博特瑞克斯株式会社 | Liquid crystal indicator |
| CN102636905A (en) * | 2012-04-16 | 2012-08-15 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and liquid crystal display device |
| WO2013155723A1 (en) * | 2012-04-16 | 2013-10-24 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and liquid crystal display device |
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