CN101211047A - Image display system comprising liquid crystal display panel - Google Patents
Image display system comprising liquid crystal display panel Download PDFInfo
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- CN101211047A CN101211047A CNA2006101702844A CN200610170284A CN101211047A CN 101211047 A CN101211047 A CN 101211047A CN A2006101702844 A CNA2006101702844 A CN A2006101702844A CN 200610170284 A CN200610170284 A CN 200610170284A CN 101211047 A CN101211047 A CN 101211047A
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Abstract
The invention relates to an image display system with a liquid crystal display panel. The liquid crystal display panel comprises a display area and a peripheral area, as well as a color filter base plate, an array base plate and a liquid crystal layer; wherein the color filter base plate is provided with a light shielding layer at the peripheral area and a share electrode at the display area and the peripheral area; the array base plate is provided with an independent electrode at the peripheral area and a pixel electrode at the display area, wherein the independent electrode is controlled by constant voltage; and the liquid crystal layer is arranged between the color filter base plate and the array base plate.
Description
Technical field
The present invention relates to a kind of image display system that comprises display panels, particularly a kind of image display system of strengthening the equivalent optical density (OD) value of display panel external zones with electrical control method.
Background technology
LCD has been widely applied in recent years on the display element of product of all kinds, for example in laptop computer, TV, digital display type electronic watch, phone, portable beeper, mobile phone, electronic calculator and the like product.The cross-section structure of traditional LCD 100 as shown in Figure 1, it has viewing area 102 and external zones 104, wherein 101 is upper substrate, has colorful filter structure (not icon) on it, and 103 is shared electrode, 105 is the black matrix" of the external zones of periphery, viewing area, 109 is infrabasal plate, has thin film transistor (TFT) (TFT) structure on it, and 107 is pixel electrode, 110 is liquid crystal layer, between two substrates 101,109.In addition, in LCD, also comprise and press from both sides a pair of Polarizer up and down of establishing upper and lower base plate, and be arranged at down the backlight arrangement under the Polarizer.
With Chang Liang (NW) twisted nematic (TN) LCD is example, in traditional LCD, when applying a voltage to shared electrode 103 and pixel electrode 107,102 liquid crystal molecule is subjected to effect of electric field up and down in the viewing area, transfer erectility 112 to by original lying status 114, this moment from the light of backlight arrangement earlier through Polarizer down, again through upright liquid crystal molecule 112 but, make the demonstration of viewing area 102 present dark attitude by last Polarizer; The liquid crystal molecule of reviewing external zones 104 is not subjected to electric field action, therefore still keep lying status 114, when from the light of backlight arrangement through Polarizer down, can make the demonstration of external zones 104 present bright attitude by last Polarizer through the liquid crystal molecule 114 that lies low again.
See also Fig. 2, it is the vertical view of LCD 100, as mentioned above, when LCD 100 is applied voltage, the viewing area 102 of central authorities can present dark attitude, and external zones 104 then presents bright attitude, even under the black matrix" shading of external zones, intersection in external zones and viewing area still has light leakage phenomena and produces, and makes that the display quality of display is not good.
Along with exploration on display resolution ratio increases, penetrating of light can be reduced in the pixel, therefore when dark attitude, the brightness of peripheral black matrix" area edge will be than the brightness height of central viewing area, cause the external zones light leakage phenomena more obvious, and along with the brightness of backlight promotes, will be more obvious at the luminance difference on viewing area and external zones border.
Therefore, industry is needed a kind of display panels that overcomes above-mentioned light leakage phenomena badly, to reach good display quality.
Summary of the invention
The objective of the invention is to utilize electrical control method, improve the equivalent optical density (OD) value of display panel external zones, to overcome light leakage phenomena.
For reaching above-mentioned purpose, the invention provides a kind of image display system that comprises display panels, it comprises display panels, and a pair of polarisation plate holder of establishing this display panels, wherein this display panels has the viewing area and around the external zones of this viewing area, and comprising colored filter substrate, it has the shared electrode that is arranged on this viewing area and this external zones; Light shield layer is arranged on the external zones; Array base palte, it has and is arranged at the pixel electrode on the viewing area and is arranged at absolute electrode on the external zones, and wherein this absolute electrode is to decide Control of Voltage.In addition, this display panels also comprises liquid crystal layer, is arranged between colored filter substrate and the array base palte.
The present invention controls this absolute electrode to decide voltage system, and arranges in pairs or groups with the shared electrode on the external zones, utilizes electrical control method, makes the liquid crystal molecule of display panels external zones be controlled, and then reduces the light leak problem of external zones.
For allow above-mentioned purpose of the present invention, feature, and advantage can become apparent, below cooperate appended graphicly, be described in detail below:
Description of drawings
Fig. 1 is the sectional view of known LCD.
Fig. 2 is the vertical view of known LCD.
Fig. 3 A is the sectional view of the display panels of embodiments of the invention.
Fig. 3 B is the sectional view of the display panels of another embodiment of the present invention.
Fig. 4 is the configuration schematic diagram of the image display system that comprises display panels of the preferred embodiment of the present invention.
Description of reference numerals
100～known LCD; 101,301～upper substrate; 109～infrabasal plate; 102,202,302～viewing area; 103,203,303～shared electrode; 104,204,304～external zones; 105,205,305～light shield layer (black matrix"); 107,207,307～pixel electrode; 110,210,310～liquid crystal layer; 112～upright liquid crystal molecule; 114～the liquid crystal molecule that lies low; 200,300～display panels of the present invention; 201～colored filter substrate; 209,309～array base palte; 308～colored filter; 211,311～absolute electrode; 213,313～upward Polarizers; 215,315～following Polarizer; 300～input block; 400～LCD; 500～comprise the image display system of display panels.
Embodiment
The present invention improves equivalent optical density (OD) (OD) value of display panel external zones, and then avoids light leakage phenomena to take place with electrical control mode.
See also Fig. 3 A, it is the sectional view of the display panels 200 of embodiments of the invention, display panels 200 has viewing area 202 and external zones 204, wherein external zones 204 centers on viewing area 202 (not icon), and comprises colored filter substrate 201, array base palte 209 and the liquid crystal layer between substrate 201 and 209 210.
Have colorful filter structure (not icon) on colored filter substrate 201, and have the light shield layer 205 that is arranged on the external zones 204, the material of light shield layer can be black-matrix material, for example Cr/CrO, black resin etc.Also have shared electrode 203 on substrate 201, it is covered on the light shield layer of viewing area 202 and external zones 204, and the material of shared electrode 203 is transparent conductive material, for example ITO, IZO etc.
Have thin film transistor (TFT) array (TFT array) (not shown) on the viewing area 202 of array base palte 209, and also have pixel electrode 207 to be covered on the viewing area, the material of pixel electrode 207 is transparent conductive material, for example ITO, IZO etc.According to key character of the present invention, on the external zones of substrate 209, be provided with absolute electrode 211, and corresponding to the light shield layer 205 of colored filter substrate, the material of absolute electrode can be transparent conductive material or metal material, for reaching better shaded effect, can select metal material.
In addition, see also Fig. 3 B, it is the sectional view of the display panels 300 of another embodiment of the present invention, the structure of this display panels is colored filter (color filter on array on array, COA) structure, shown in Fig. 3 B, display panels 300 has viewing area 302 and external zones 304, wherein external zones 304 centers on viewing area 302 (not icon), and comprises upper substrate 301, array base palte 309 and the liquid crystal layer between substrate 301 and 309 310.
Have shared electrode 303 on upper substrate 301, it is covered on viewing area 302 and the external zones 304, and upper substrate 301 is transparency carrier, for example glass substrate; The material of shared electrode 303 is transparent conductive material, for example ITO, IZO etc.
On the viewing area 302 of array base palte 309, has thin film transistor (TFT) array (TFT array) (not shown), chromatic colour filter sheet structure 308 on thin film transistor (TFT) array, and also have pixel electrode 307 to be covered on the colorful filter structure 308, the material of pixel electrode 307 is transparent conductive material, for example ITO, IZO etc.In addition, be provided with light shield layer 305 on the external zones 304 of array base palte 309, its material can be black-matrix material, for example Cr/CrO, black resin etc.According to key character of the present invention, on light shield layer 305, be provided with absolute electrode 311, the material of absolute electrode can be transparent conductive material or metal material, for reaching better shaded effect, can select metal material.
With traditional display panels in comparison, the present invention provides absolute electrode on the array base palte of the external zones of display panel, therefore no matter light shield layer and colorful filter structure be at upper substrate or infrabasal plate, and display panel of the present invention all has electrode on the upper substrate of external zones and array base palte.Electrode on upper substrate is a shared electrode, it extends to external zones from the viewing area, electrode on array base palte then is an absolute electrode, it can utilize the manufacturing of photoengraving lithography, with the pixel electrode of viewing area be independent mutually, and adopt and decide voltage system control, its voltage can be complied with employed liquid crystal kind and be determined, the electrical control method of absolute electrode can be utilized the driving circuit control of display panel outside, or utilizes the circuit control of display panel inside.
With Chang Liang (NW) twisted-nematic (TN) type LCD is example, except display panels 200,300 of the present invention, shown in 3A and 3B figure, also comprise and press from both sides a pair of Polarizer 213,215 up and down of establishing display panels 200, and folder establishes a pair of up and down Polarizer 313,315 of display panels 300, and should can cover the external zones at absolute electrode place to Polarizer up and down.In addition, also has the backlight arrangement (not icon) that is arranged at down under the Polarizer.
Please consult Fig. 3 A and Fig. 3 B again, when applying a voltage to shared electrode 203,303 and pixel electrode 207,307, and apply and decide voltage in absolute electrode 211,311 o'clock, in the viewing area 202,302 and the liquid crystal molecule 210,310 of external zones 204,304 all can be subjected to effect of electric field up and down, transfer erectility to by original lying status, this moment is from Polarizer 215,315 under the light process of backlight, again through upright liquid crystal molecule but, can make the demonstration of viewing area 202,302 and external zones 204,304 all present dark attitude by last Polarizer 213,313.
In display panels of the present invention, to have optical density (OD) value (OD) is 3.5 resin type black matrix (BM), and to have correlative value be that 300 NWTN type liquid crystal is an example, and the equivalent optical density (OD) value of its external zones can be calculated in the following manner, and resulting value reaches 5.98.
log[(1/300)*(10e-3.5)]＝5.98
When the optical density (OD) value high more, represent that its optical transmission rate is low more, that is its shaded effect is good more, can learn by the aforementioned calculation result, the more traditional display panels of display panels of the present invention more can reduce the brightness in peripheral black matrix" district, its equivalent optical density (OD) value can reach 2 times of the optical density (OD) value that is about black matrix", can prevent effectively that therefore the light leakage phenomena of external zones from taking place.
Though above-mentioned is to be example with NWTN type LCD, so it is limited, and the present invention also can be applicable in normal black (NB) TN type LCD.
Then see also Fig. 4, it is the configuration schematic diagram that comprises the image display system 500 of display panels of the present invention, wherein comprise LCD 400, this LCD has display panels 200 of the present invention or 300, and folder is established a pair of Polarizer up and down of this display panels, one backlight arrangement is arranged at down under the Polarizer, and this LCD 400 can be the part of electronic installation.Generally speaking, image display system 500 comprises LCD 400 and input block 300, and input block and LCD 400 couple, and transmission signals makes the liquid crystal display displays image to LCD.Image display system 500 can be mobile phone, digital camera, PDA(Personal Digital Assistant), mobile computer, desktop PC, TV, automobile-used display or Portable DVD player.
Though the present invention has disclosed preferred embodiment as above; right its is not in order to qualification the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention defines and is as the criterion when looking claim.
Claims (12)
1. image display system that comprises display panels comprises:
Display panels, and
Folder is established a pair of Polarizer of this display panels,
Wherein this display panels has the viewing area and around the external zones of this viewing area, and comprises:
First substrate has in this viewing area and the shared electrode of this external zones;
Light shield layer is arranged at this external zones;
Second substrate has the pixel electrode in this viewing area, and at the absolute electrode of this external zones, wherein this absolute electrode is to decide Control of Voltage; And
Liquid crystal layer is arranged between this first substrate and this second substrate.
2. the image display system that comprises display panels as claimed in claim 1, wherein this light shield layer is arranged between this first substrate and this shared electrode.
3. the image display system that comprises display panels as claimed in claim 2, wherein this first substrate is a colored filter substrate, this second substrate is an array base palte.
4. the image display system that comprises display panels as claimed in claim 1, wherein this light shield layer is arranged between this second substrate and this absolute electrode.
5. the image display system that comprises display panels as claimed in claim 4 wherein also comprises the colored filter that is arranged between this second substrate and this pixel electrode.
6. the image display system that comprises display panels as claimed in claim 5, wherein this second substrate is an array base palte.
7. the image display system that comprises display panels as claimed in claim 1, wherein this covers the external zones at this absolute electrode place to Polarizer.
8. the image display system that comprises display panels as claimed in claim 1, wherein this absolute electrode comprises transparent conductive material or metal material.
9. the image display system that comprises display panels as claimed in claim 1 further comprises LCD, and this LCD comprises:
This display panels;
Folder establish this display panels this to Polarizer; And
Backlight arrangement is arranged at this under Polarizer and this display panels.
10. the image display system that comprises display panels as claimed in claim 9, wherein the equivalent optical density (OD) value of this external zones is about 2 times of optical density (OD) value of this light shield layer.
11. the image display system that comprises display panels as claimed in claim 9 further comprises electronic installation, this electronic installation comprises:
This LCD; And
Input block couples with this LCD, and wherein this input block transmission signals is to this LCD, so that this liquid crystal display displays image.
12. the image display system that comprises display panels as claimed in claim 11, wherein this electronic installation is mobile phone, digital camera, personal digital assistant, mobile computer, desktop PC, TV, automobile-used display or Portable DVD player.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101702844A CN101211047A (en) | 2006-12-26 | 2006-12-26 | Image display system comprising liquid crystal display panel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101702844A CN101211047A (en) | 2006-12-26 | 2006-12-26 | Image display system comprising liquid crystal display panel |
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| CN101211047A true CN101211047A (en) | 2008-07-02 |
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| CNA2006101702844A Pending CN101211047A (en) | 2006-12-26 | 2006-12-26 | Image display system comprising liquid crystal display panel |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156358A (en) * | 2010-02-12 | 2011-08-17 | 奇美电子股份有限公司 | Liquid crystal displaying device, liquid crystal displaying panel and driving method |
| CN101923244B (en) * | 2009-06-16 | 2012-06-13 | 友达光电股份有限公司 | Display panel and display device |
| US8817004B2 (en) | 2008-12-25 | 2014-08-26 | Innolux Corporation | Liquid crystal display apparatus, liquid crystal display panel and driving method |
| CN104280953A (en) * | 2014-10-24 | 2015-01-14 | 京东方科技集团股份有限公司 | Display panel and production method thereof |
| CN110928069A (en) * | 2019-11-29 | 2020-03-27 | 厦门天马微电子有限公司 | Display device |
-
2006
- 2006-12-26 CN CNA2006101702844A patent/CN101211047A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8817004B2 (en) | 2008-12-25 | 2014-08-26 | Innolux Corporation | Liquid crystal display apparatus, liquid crystal display panel and driving method |
| CN101923244B (en) * | 2009-06-16 | 2012-06-13 | 友达光电股份有限公司 | Display panel and display device |
| CN102156358A (en) * | 2010-02-12 | 2011-08-17 | 奇美电子股份有限公司 | Liquid crystal displaying device, liquid crystal displaying panel and driving method |
| CN102156358B (en) * | 2010-02-12 | 2016-04-20 | 群创光电股份有限公司 | Liquid crystal indicator, display panels and driving method |
| CN104280953A (en) * | 2014-10-24 | 2015-01-14 | 京东方科技集团股份有限公司 | Display panel and production method thereof |
| US9915838B2 (en) | 2014-10-24 | 2018-03-13 | Boe Technology Group Co., Ltd. | Display panel and method for fabricating the same |
| CN110928069A (en) * | 2019-11-29 | 2020-03-27 | 厦门天马微电子有限公司 | Display device |
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Open date: 20080702 |