CN102156358A - Liquid crystal displaying device, liquid crystal displaying panel and driving method - Google Patents
Liquid crystal displaying device, liquid crystal displaying panel and driving method Download PDFInfo
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- CN102156358A CN102156358A CN2010101157952A CN201010115795A CN102156358A CN 102156358 A CN102156358 A CN 102156358A CN 2010101157952 A CN2010101157952 A CN 2010101157952A CN 201010115795 A CN201010115795 A CN 201010115795A CN 102156358 A CN102156358 A CN 102156358A
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Abstract
The invention provides a liquid crystal displaying device that comprises a backlight module and a liquid crystal displaying panel that is arranged at one side of the backlight module, wherein the liquid crystal displaying panel comprises a first substrate, a second substrate and a liquid crystal layer that is arranged between the first substrate and the second substrate; the second substrate is arranged opposite to the first substrate; the first substrate and the second substrate commonly form a displaying area and a light shielding area that is arranged around the displaying area; the first substrate in the light shielding area is provided with a first electrode layer; and the second substrate is provided with a first light shielding layer and a second light shielding layer. The invention also discloses a driving method that corresponds to the device.
Description
Technical field
The present invention relates to the method that lightproof area reduces light leak, the lightproof area that particularly is used in a kind of liquid crystal indicator and display panels reduces the method for light leak.
Background technology
Along with LCD (Liquid Crystal Display, LCD) technical development is ripe gradually, it replaces tradition gradually and utilizes cathode-ray tube (CRT) (Cathode Ray Tube, display technique CRT), and extensively being applied in the various electronic product.Wherein, display panels can be divided into plane conversion (In Plane Switching again, IPS) type, multi-zone vertical alignment nematic (Multi-domainVertical Alignment, MVA) type, twisted nematic (Twist Nematic, TN) type, colored filter are in electric crystal array film (Color filter On Array, COA) type or partly wear transoid (Transflective) etc.In this, will explain for example with COA type display panels, yet it will be appreciated by those skilled in the art that this give an example non-in order to the restriction interest field of the present invention.
Figure 1 shows that a kind of known liquid crystal indicator 10, comprise the bright dipping side that backlight module 100 and display panels 200 are arranged at backlight module 100.Display panels 200 has electrode base board 210, COA substrate 220 and liquid crystal layer 230, and liquid crystal layer 230 is folded between electrode base board 210 and the COA substrate 220, and with sealing 240 sealing liquid crystal layers 230.Wherein, electrode base board 210 and COA substrate 220 common viewing area Z1 and the shading region Z2 of forming, shading region Z2 be positioned at viewing area Z1 around.In addition, electrode base board 210 has transparent electrode layer 211, and COA substrate 220 has chromatic filter layer 221 and metal carbonyl conducting layer 222.
But in the known liquid crystal indicator 10 of Fig. 1, shading region Z2 has the bad situation generation that light penetrates, the problem of so-called incomplete shading just.The incomplete problem of this type of so-called shading can be divided into following two kinds haply, a kind of to be light penetrate the incomplete problem of shading that is caused from shading region Z2 to viewing area Z1, another kind of then be light from the direct incomplete problem of shading that caused of ejaculation of shading region Z2.
Penetrate for fear of light from shading region Z2, two kinds of known existing improvement modes are arranged, first kind of known technology is for utilizing chromatic filter layer 221 as light shield layer, and second kind of known technology is as light shield layer with a metal level (figure does not show).
Yet first known technology still has the problem of light leak, and (Optical Density, when OD) not enough, light still can penetrate via chromatic filter layer 221, make shading region Z2 produce light leak when the light absorption value of chromatic filter layer 221 or optical density (OD).
In addition, second known technology because of metal level easily with metal carbonyl conducting layer 222 formation electro-static discharge structures, just so-called capacitor architecture, therefore, cause part to damage because produce the static discharge effect easily, cause signal line open circuit (Open Circuit, OC) generation, and the hypotelorism of metal interlevel causes the physical phenomenon of big electric capacity, increases the resistive/capacitive load problem, causes the situation of signal waveform transmission delay and damage.
Therefore, how to provide a kind of and can avoid the problems referred to above, and improve the method for liquid crystal indicator, display panels and the display panels minimizing light leak of the shaded effect of shading region, become one of important topic.
Summary of the invention
Because above-mentioned problem, purpose of the present invention is for providing a kind of static discharge of can avoiding producing, and the liquid crystal indicator, display panels and the display panels that improve the shaded effect of shading region reduce the method for light leak.
For reaching above-mentioned purpose, according to a kind of driving method of the present invention, in order to drive display panels, wherein display panels has first substrate, second substrate and liquid crystal layer and is folded between first substrate and second substrate.First substrate and second substrate form jointly viewing area and shading region be positioned at the viewing area around.This method comprises the following step, is positioned at the penetrance of the liquid crystal layer of shading region according to control signal control, with shield lights.
For reaching above-mentioned purpose, according to a kind of driving method of the present invention, in order to drive display panels, wherein display panels has first substrate, second substrate and liquid crystal layer and is folded between first substrate and second substrate.First substrate and second substrate form jointly viewing area and shading region be positioned at the viewing area around.This method comprises the following step, controls the potential difference (PD) of first substrate and second substrate according to the image control signal, controls the penetrance of the liquid crystal layer that is positioned at shading region, with shield lights.
For reaching above-mentioned purpose, according to a kind of driving method of the present invention, be used for driving display panels, wherein display panels has first substrate, second substrate and liquid crystal layer and is folded between first substrate and second substrate.First substrate and second substrate form jointly viewing area and shading region be positioned at the viewing area around.This method comprises the following step, is positioned at the penetrance of the liquid crystal layer of viewing area according to image control signal control, and controls the penetrance of the liquid crystal layer that is positioned at shading region according to first substrate and the potential difference (PD) of second substrate, with shield lights.
For reaching above-mentioned purpose, comprise first substrate, second substrate and liquid crystal layer according to a kind of display panels of the present invention, liquid crystal layer is folded between first substrate and second substrate.Second substrate and the first substrate subtend are provided with, and first substrate and second substrate form viewing area and shading region jointly, shading region be positioned at the viewing area around.First substrate has first electrode layer in the shading region, and second substrate has first light shield layer and second light shield layer.
For reaching above-mentioned purpose, comprise backlight module and display panels according to a kind of liquid crystal indicator of the present invention, display panels is arranged at a side of backlight module.Display panels comprises first substrate, second substrate and liquid crystal layer, and liquid crystal layer is folded between first substrate and second substrate.Second substrate and the first substrate subtend are provided with, and first substrate and second substrate form viewing area and shading region jointly, shading region be positioned at the viewing area around.First substrate has first electrode layer in the shading region, and second substrate has first light shield layer and second light shield layer.
From the above, according to liquid crystal indicator of the present invention and display panels, first light shield layer and second light shield layer are set simultaneously, therefore the light that do not cover fully of first light shield layer in shading region, more further cover, promptly can improve the shaded effect of shading region by this via second light shield layer.
The driving method of display panels of the present invention drives the liquid crystal layer that is positioned at shading region by the potential difference (PD) between first substrate and second substrate, downgrades the light penetration rate, so that liquid crystal layer reaches the usefulness of shading, improves the shaded effect of shading region again.
In addition, another driving method of display panels of the present invention also can be controlled the potential difference (PD) of the liquid crystal layer that is positioned at shading region by the image control signal of viewing area, control the penetrance of the liquid crystal layer that is positioned at shading region, to improve the shaded effect of shading region with respect to the viewing area.
Again, the another driving method of display panels of the present invention more can be controlled the penetrance of the liquid crystal layer that is positioned at shading region by control signal, to improve the shaded effect of shading region with respect to the viewing area.
Again, when the viewing area shows brighter picture, this moment, human eye was difficult for perceiving the light leak that is appeared by shading region, therefore, if the saving power consume, can relatively downgrade the shaded effect of shading region liquid crystal layer.And when the viewing area showed dark picture, human eye was more easily perceived the light leak that may be appeared by shading region, then must improve the shaded effect of shading region liquid crystal layer this moment.
Description of drawings
Fig. 1 is a kind of sectional view of known liquid crystal indicator;
Fig. 2 A is the vertical view of the liquid crystal indicator of first embodiment of the invention;
Fig. 2 B be among Fig. 2 A liquid crystal indicator along the sectional view of A-A straight line;
Fig. 3 and Fig. 4 are the process flow diagram of different driving method of the present invention;
Fig. 5 A and Fig. 5 B are the different aspect circuit block diagrams of shading region signal controlling module of the present invention;
Fig. 6 is the process flow diagram of another driving method of the present invention;
Fig. 7 is the synoptic diagram of another variation aspect of liquid crystal indicator of first embodiment of the invention; And
Fig. 8 is the synoptic diagram of a kind of liquid crystal indicator of second embodiment of the invention.
[main element symbol description]
10,30,40,50: liquid crystal indicator
100: backlight module
200,300,400,500: display panels
210: electrode base board
211: transparent electrode layer
The 220:COA substrate
221: chromatic filter layer
222,323: metal carbonyl conducting layer
230,330,430,530: liquid crystal layer
240,340: sealing
310,410,510: the first substrates
311,511: the first electrode layers
320,420,520: the second substrates
321,521: the first light shield layers
322,422,522: the second light shield layers
350: shading region signal controlling module
351: signal is controlled in the shielded area
353: signal is controlled in screen menu shielded area
354: signal is controlled in the time schedule controller shielded area
352: signal is adjusted in shading region control
360: screen control menu
370: time schedule controller
380: multi-task processor
472: contact hole
S1000, S2000, S3000, S4000: the steps flow chart of driving method of the present invention
Z1: viewing area
Z2: shading region
Embodiment
Hereinafter with reference to correlative type, a kind of liquid crystal indicator, display panels and driving method according to the preferred embodiment of the present invention are described, wherein similar elements is represented with same numeral.
First embodiment:
Please refer to shown in Fig. 2 A and Fig. 2 B, the liquid crystal indicator 30 of first embodiment of the invention comprises backlight module 100 and display panels 300.Backlight module 100 for example is straight-down negative (Direct Type) backlight module or side-light type (Side-Edge Type) backlight module.In present embodiment, backlight module 100 is that example explains with the direct type backlight module, and so it is non-in order to limit interest field of the present invention.
Wherein, first substrate 310 and second substrate 320 for example are the combination of COA substrate and electrode base board.In present embodiment, be electrode base board with first substrate 310, and second substrate 320 explain for the example that is combined as of COA substrate, so it is non-in order to restriction interest field of the present invention.
Among the shading region Z2, second substrate 320 comprises first light shield layer 321 and second light shield layer 322.Wherein, be example in this with a plurality of first light shield layers 321, these first light shield layers 321 can be chromatic filter layer or organic insulator, and second light shield layer 322 can be the second electrode lay or metal level.
If second light shield layer 322 is the second electrode lay, then can be the same with first electrode layer 311 be transparent electrode layer, its material can be utilized indium tin oxide (ITO), indium-zinc oxide (IZO) or aluminium zinc oxide (AZO) equally.
If second light shield layer 322 is a metal level, because first light shield layer 321 at interval in the metal carbonyl conducting layer 323 on this metal level and second substrate 320, mat first light shield layer 321 can avoid 323 of metal level and metal carbonyl conducting layers to produce because of static discharge that signal circuit is opened a way and problems such as increase resistive/capacitive load.
Because can making technology with viewing area Z1, first light shield layer 321 of shading region Z2 and the technology of second light shield layer 322 integrates, therefore, first light shield layer 321 and second light shield layer 322 of shading region Z2 can be simplified processing step by integrated process, especially second light shield layer 322 is made in viewing area Z1 and shading region Z2 simultaneously, and the adjustable product cost of being born.
In addition, a kind of driving method of the present invention, in order to drive display panels 300, as Fig. 2 B and shown in Figure 3, when second light shield layer 322 was the second electrode lay, the method comprised step S1000 and step S2000.
Step S1000 is foundation image control signal, and control is positioned at the penetrance of the liquid crystal layer 330 of viewing area Z1.
Step S2000 is the potential difference (PD) according to first substrate 310 and second substrate 320, and control is positioned at the penetrance of the liquid crystal layer 330 of shading region Z2, with shield lights.
Wherein, potential difference (PD) refers to the potential difference (PD) that produced between the second electrode lay as second light shield layer 322 on first electrode layer 311 of first substrate 310 and second substrate 320.In a preferred embodiment, second light shield layer 322 that lays respectively at viewing area Z1 and shading region Z2 is preferably electrical isolation, directly changes the shaded effect of the liquid crystal layer 330 of shading region Z2 to avoid the image control signal when control is positioned at the liquid crystal layer 330 of viewing area Z1.
Therefore,, can make liquid crystal layer 330 have the function of shading equally, more improve the shaded effect of shading region Z2 by the penetrance that downgrades the liquid crystal layer 330 that is positioned at shading region Z2.In addition, for saving power consumption, when viewing area Z1 showed brighter picture, human eye was difficult for perceiving the light leak that is appeared by shading region Z2, therefore, can relatively downgrade the shaded effect of shading region Z2 liquid crystal layer 330.On the contrary, when viewing area Z1 display frame was dark, human eye was more easily perceived the light leak that may be appeared by shading region Z2, then must improve the shaded effect of shading region Z2 liquid crystal layer 330 this moment.
The another kind of driving method of the present invention, in order to drive display panels 300, as Fig. 2 B and shown in Figure 4, the method comprises step S3000.
Step S3000 is for foundation control signal control is positioned at the penetrance of the liquid crystal layer 330 of shading region Z2, with shield lights.
Wherein, control signal can be according to the penetrance of the liquid crystal layer 330 that is positioned at viewing area Z1, and handles and obtain via IC.Perhaps, control signal for example can be image control signal or shading region control signal.In addition, viewing area Z1 and shading region Z2 correspond to the viewing area Z1 liquid crystal layer 330 and the shading region Z2 liquid crystal layer 330 of liquid crystal layer 330 respectively.
Shown in Fig. 5 A, the display panels 300 of present embodiment more can comprise shading region signal controlling module 350.Shading region signal controlling module 350 receives shielded areas and controls signal 351, and the shielded area is controlled signal 351 and come from the external users and control menu (On Screen Display, OSD) 360 inputs or come from time schedule controller 370 via screen.Multi-task processor 380 receives from the external users via after 360 inputs of screen control menu or coming from the signal of time schedule controller 370, selects one and is output as the shielded area and controls signal 351 and be sent to shading region signal controlling module 350.After signal 351 is controlled in shading region signal controlling module 350 reception shielded areas, then export shading region control and adjust signal 352 to shading region Z2, be positioned at the penetrance of the liquid crystal layer 330 of shading region Z2 with control.Wherein, the shielded area is controlled signal 351 and can be the liquid crystal shading angle signal.The liquid crystal shading angle signal can be adjusted the liquid crystal anglec of rotation of shading region liquid crystal layer 330 according to user's demand or system requirements, with the shaded effect of control shading region Z2.
In addition, shown in Fig. 5 B, it is another circuit block diagram of shading region signal controlling module 350.Shading region signal controlling module 350 also can receive simultaneously from the screen menu shielded area of screen control menu 360 and control signal 353 and control signal 354 from the time schedule controller shielded area of time schedule controller 370, export shading region control again and adjust signal 352 to shading region Z2, and can control the penetrance of the liquid crystal layer 330 that is positioned at shading region Z2 more accurately.
Another driving method of the present invention, in order to drive display panels 300, as Fig. 2 B and shown in Figure 6, the method comprises step S4000.
Step S4000 controls the potential difference (PD) of first substrate 310 and second substrate 320 for foundation image control signal, uses the penetrance that control is positioned at the liquid crystal layer 330 of shading region Z2, with shield lights.
Wherein, the image control signal is controlled on first electrode layer 311 of first substrate 310 and second substrate 320 as potential difference (PD) between the second electrode lay of second light shield layer 322.Therefore,, can make liquid crystal layer 330 have the function of shading equally, more improve the shaded effect of shading region Z2 by the penetrance that downgrades the liquid crystal layer 330 that is positioned at shading region Z2.
The foregoing description, though be illustrated in the design of the minimizing light leak of electric crystal array film (COA) type display panels to be applied in colored filter, but the present invention reduces the method for light leak can be applicable to other forms of display panels equally, such as but not limited to plane conversion (IPS) type display panels, multi-zone vertical alignment nematic (MVA) type display panels, twisted nematic (TN) type display panels or partly wear transoid (Transflective) display panels.
Please refer to shown in Figure 7ly, the display panels 400 of liquid crystal indicator 40 comprises first substrate 410, second substrate 420 and liquid crystal layer 430.Therefore display panels 400 for example is a MVA type display panels, in shading region Z2, as the second electrode lay of second light shield layer 422 a plurality of contact holes 472 also can be set, to increase the reaction velocity of liquid crystal layer 430.
Second embodiment:
Second embodiment of the invention, the difference of the display panels 500 of liquid crystal indicator 50 as shown in Figure 8 and the display panels 300 of first embodiment is: first substrate 510 and second substrate 520 for example are the combination of colored optical filtering substrates and membrane transistor substrate, in this will be the membrane transistor substrate with first substrate 510, and second substrate 520 explains for the example that is combined as of colored optical filtering substrates.
Identical with first embodiment, have first light shield layer 521 and second light shield layer 522 on second substrate 520.First light shield layer 521 for example is chromatic filter layer or organic insulator, and second light shield layer 522 for example is the second electrode lay or metal level.
Therefore, similarly, first light shield layer 521 and second light shield layer 522 can be by simplifying processing step with viewing area Z1 process integration, and downgrade manufacturing cost.And, if second light shield layer 522 is a second electrode lay,, can adjust the penetrance of the liquid crystal layer 530 that is positioned at shading region Z2 equally by the potential difference (PD) of first electrode layer 511 with the second electrode lay 522, and make liquid crystal layer 530 have the function of shading equally, more improve the shaded effect of shading region Z2.
In sum, according to liquid crystal indicator of the present invention and display panels, first light shield layer and second light shield layer are set simultaneously, therefore the light that do not cover fully of first light shield layer in shading region, more further cover, promptly can improve the shaded effect of shading region by this via second light shield layer.
The driving method of display panels of the present invention drives the liquid crystal layer that is positioned at shading region by the potential difference (PD) between first substrate and second substrate, downgrades the light penetration rate, so that liquid crystal layer reaches the usefulness of shading, improves the shaded effect of shading region again.
In addition, another driving method of display panels of the present invention also can be controlled the potential difference (PD) of the liquid crystal layer that is positioned at shading region by the image control signal of viewing area, control the penetrance of the liquid crystal layer that is positioned at shading region, to improve the shaded effect of shading region with respect to the viewing area.
Again, the another driving method of display panels of the present invention more can be controlled the penetrance of the liquid crystal layer that is positioned at shading region by control signal, to improve the shaded effect of shading region with respect to the viewing area.
Again, when the viewing area shows brighter picture, this moment, human eye was difficult for perceiving the light leak that is appeared by shading region, therefore, if the saving power consume, can relatively downgrade the shaded effect of shading region liquid crystal layer.And when the viewing area showed dark picture, human eye was more easily perceived the light leak that may be appeared by shading region, then must improve the shaded effect of shading region liquid crystal layer this moment.
The above only is an illustrative, but not is restricted person.Anyly do not break away from spirit of the present invention and category, and, all should be contained in the appended claim its equivalent modifications of carrying out or change.
Claims (10)
1. driving method, in order to drive display device, this display device comprises viewing area and shading region, wherein this shading region is adjacent to one side at least of this viewing area, this shading region comprises automatically controlled material, and this automatically controlled material has regulatable shading rate, and this driving method comprises following steps:
Be positioned at the shading rate of this automatically controlled material of this shading region according to control signal control, can make this shading region present dark attitude.
2. driving method as claimed in claim 1, wherein this shading region is around this viewing area.
3. driving method as claimed in claim 1, wherein this display device comprises:
First electrode, this first electrode places this viewing area and this shading region;
Second electrode, this second electrode places this viewing area at least.
4. driving method as claimed in claim 3, wherein this second electrode also places this shading region.
5. as claim 3 or 4 described driving methods, wherein the material of this first electrode or second electrode can be indium tin oxide, indium-zinc oxide and aluminium zinc oxide one of them.
6. display device comprises:
The viewing area;
Shading region, this shading region be adjacent to this viewing area at least on one side, and this shading region comprises automatically controlled material, this automatically controlled material has regulatable shading rate; And
Control circuit, this control circuit can produce control signal, uses the shading rate of the automatically controlled material of this shading region of control.
7. display device as claimed in claim 6, wherein this shading region is around this viewing area.
8. display device as claimed in claim 6 also more comprises:
First electrode, this first electrode places this viewing area and this shading region;
Second electrode, this second electrode places this viewing area at least.
9. display device as claimed in claim 8, wherein this second electrode also places this shading region.
10. display device as claimed in claim 8 or 9, wherein the material of this first electrode or second electrode can be indium tin oxide, indium-zinc oxide and aluminium zinc oxide one of them.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201010115795.2A CN102156358B (en) | 2010-02-12 | 2010-02-12 | Liquid crystal indicator, display panels and driving method |
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| CN201010115795.2A CN102156358B (en) | 2010-02-12 | 2010-02-12 | Liquid crystal indicator, display panels and driving method |
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| CN102156358A true CN102156358A (en) | 2011-08-17 |
| CN102156358B CN102156358B (en) | 2016-04-20 |
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| CN105990371A (en) * | 2015-02-09 | 2016-10-05 | 群创光电股份有限公司 | Display panel |
| CN106990580A (en) * | 2015-12-30 | 2017-07-28 | 乐金显示有限公司 | Non-boundary display device including display module |
| CN110910770A (en) * | 2019-11-29 | 2020-03-24 | 武汉天马微电子有限公司 | Display panel and display device |
| CN113253504A (en) * | 2021-05-13 | 2021-08-13 | Tcl华星光电技术有限公司 | Display panel and display device |
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| CN101211047A (en) * | 2006-12-26 | 2008-07-02 | 统宝光电股份有限公司 | Image display system comprising liquid crystal display panel |
| US20090052164A1 (en) * | 2007-08-24 | 2009-02-26 | Masako Kashiwagi | Directional backlight, display apparatus, and stereoscopic display apparatus |
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| US20070024785A1 (en) * | 2003-12-10 | 2007-02-01 | Seiko Epson Corporation | Liquid crystal display device, method of manufacturing liquid crystal display device, and electronic apparatus |
| CN101211047A (en) * | 2006-12-26 | 2008-07-02 | 统宝光电股份有限公司 | Image display system comprising liquid crystal display panel |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105990371A (en) * | 2015-02-09 | 2016-10-05 | 群创光电股份有限公司 | Display panel |
| CN105990371B (en) * | 2015-02-09 | 2021-03-19 | 群创光电股份有限公司 | Display panel |
| CN106990580A (en) * | 2015-12-30 | 2017-07-28 | 乐金显示有限公司 | Non-boundary display device including display module |
| CN110910770A (en) * | 2019-11-29 | 2020-03-24 | 武汉天马微电子有限公司 | Display panel and display device |
| CN110910770B (en) * | 2019-11-29 | 2022-02-08 | 武汉天马微电子有限公司 | Display panel and display device |
| CN113253504A (en) * | 2021-05-13 | 2021-08-13 | Tcl华星光电技术有限公司 | Display panel and display device |
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| CN102156358B (en) | 2016-04-20 |
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Address after: Miaoli County, Taiwan, China Patentee after: INNOLUX DISPLAY CORP. Address before: Miaoli County, Taiwan, China Patentee before: CHI MEI OPTOELECTRONICS CORP. |
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