CN1991471A - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
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- CN1991471A CN1991471A CNA2006101725390A CN200610172539A CN1991471A CN 1991471 A CN1991471 A CN 1991471A CN A2006101725390 A CNA2006101725390 A CN A2006101725390A CN 200610172539 A CN200610172539 A CN 200610172539A CN 1991471 A CN1991471 A CN 1991471A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1323—Arrangements for providing a switchable viewing angle
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134372—Electrodes characterised by their geometrical arrangement for fringe field switching [FFS] where the common electrode is not patterned
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
- G02F2201/52—RGB geometrical arrangements
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Liquid Crystal (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Mathematical Physics (AREA)
- Liquid Crystal Display Device Control (AREA)
Abstract
A liquid crystal display device is disclosed, which can control a viewing angle in vertical and horizontal directions without forming a specific liquid crystal display panel, the liquid crystal display device comprising a display screen including a plurality of color pixels and liquid crystal molecules; and a viewing-angle control pixel controlling the liquid crystal molecules, an alignment direction of the liquid crystal molecules being inclined to a vertical or horizontal direction in the display screen, wherein the viewing-angle control pixel is formed independently of RGB pixels, to thereby control the viewing angle in the horizontal and vertical directions.
Description
Technical field
The present invention relates to control liquid crystal display (LCD) device at visual angle.
Background technology
LCD (particularly adopting the LCD of thin film transistor (TFT) (TFT)) has been widely used in the various application from mobile phone to the large scale TV.
A kind of LCD device with wide visual angle preferably can be provided, and its display message can be seen by a large amount of people.
Figure 13 is the view of LCD device that expression has the prior art of security schema.
Display with security schema shown in Figure 13 (for example, Japanese Patent Application Publication is 5-72529 number) has been proposed.
With reference to Figure 13, when using to the radiative backlight in the back side of LCD panel, backlight needs high directivity.
In common LCD panel and have between the backlight of high directivity, have for example to be used for another LCD panel of between scattering state and non-scattering state, switching, for example polymer diffusion type LCD panel (scattering-non-scattering switchable layer).
When scattering-when non-scattering switchable layer is in non-scattering state, only advance forward from the light that backlight sends.Thus, if the people is positioned at the side of LCD panel, the people who then is positioned at side can't see the image of demonstration.
On the other hand, if scattering-non-scattering switchable layer is in scattering state, then the light that sends from backlight is advanced towards the place ahead and side.Thus, even the people is positioned at the side of LCD panel, also can see the image of demonstration.Therefore, a large amount of people can see the image that shows on the LCD panel.
In this case, be necessary to make the special LCD panel that is different from the common liquid crystals display board.Therefore, manufacturing cost increases.
In order to address this problem, a kind of FFS (fringe fieldswitching, fringe field switching) type LCD device of prior art has been proposed, its public electrode with "＜" shape is to realize wide visual angle.
Figure 14 is the planimetric map of each rgb pixel that expression is used for the FFS type LCD device of prior art.Figure 15 A and Figure 15 B are expression has applied the liquid crystal molecule of voltage according to whether to the FFS of prior art type LCD device the figure of action.
As shown in figure 14, the FFS type LCD device of prior art comprises the public electrode that forms "＜" shape, to regulate the vergence direction of liquid crystal.
Shown in Figure 15 A, if do not apply voltage to the LCD device, then liquid crystal molecule is along the vertical direction orientation.If applied voltage to the LCD device, then liquid crystal molecule is along the effect of the tilting electric field that is produced by public electrode and definite predetermined direction, promptly tilts with the perpendicular direction of the bearing of trend of public electrode, shown in Figure 15 B.As a result, liquid crystal molecule tilts towards the both direction corresponding to "＜" shape, thereby the LCD device has good visual angle.
Yet the LCD device of prior art has following problem.
Even because the public electrode of "＜" shape can improve the visuality for specific direction of LCD device, also can't according to circumstances realize maintaining secrecy shows.
Summary of the invention
Therefore, the invention reside in a kind of FFS type LCD device, it has overcome the one or more problems that cause owing to the limitation of prior art and shortcoming basically.
The purpose of this invention is to provide a kind of FFS type LCD device, this LCD device can be controlled the visual angle of vertical direction and horizontal direction under the situation that does not form special LCD panel.
In order to realize these purposes and other advantages, and according to institute's imbody and broadly described invention aim herein, the invention provides a kind of liquid crystal indicator, this liquid crystal indicator comprises: display screen, and this display screen comprises a plurality of colored pixels and liquid crystal molecule; And the viewing angle control pixel of control liquid crystal molecule, the alignment direction of liquid crystal molecule tilts towards horizontal or vertical direction in this display screen.
At this moment, do not having under the situation of on-off element, the described a plurality of viewing angle control pixels in described display screen jointly apply the viewing angle control signal.
In addition, this LCD device also comprises the viewing angle control voltage regulator, and this viewing angle control voltage regulator is adjusted to the intermediate value of described viewing angle control signal substantially the same with the common electric voltage of described colored pixels.
In addition, this LCD device also comprises: the colored pixels driver, and this colored pixels driver applies signal to described colored pixels, and is formed on a side of described display screen; And the viewing angle control pixel driver, this viewing angle control pixel driver applies signal to described viewing angle control pixel, and is formed on the opposite side of described display screen.
Should be appreciated that above to general introduction of the present invention with all be exemplary and indicative hereinafter to detailed description of the present invention, aim to provide the further explanation of inventing to as claimed in claim.
Description of drawings
Accompanying drawing helps to understand better the present invention, and constitutes the application's a part, and accompanying drawing has shown embodiments of the invention, and explains principle of the present invention with instructions.
Fig. 1 is each rgb pixel in the LCD device of representing in accordance with a preferred embodiment of the present invention and the planimetric map of viewing angle control pixel;
Fig. 2 A and Fig. 2 B are the figure of the action of the liquid crystal molecule in the explanation viewing angle control pixel shown in Figure 1;
Fig. 3 is illustrated in according to the preferred embodiment of the invention in the viewing angle control pixel, is applying on the basis of voltage the visual angle interdependence of Luminance Distribution;
Fig. 4 A and Fig. 4 B represent each rgb pixel in the LCD device according to the preferred embodiment of the invention and another planimetric map of viewing angle control pixel;
Fig. 5 is illustrated in according to the preferred embodiment of the invention in the viewing angle control pixel, is applying on the basis of voltage another figure of the visual angle interdependence of Luminance Distribution;
Fig. 6 is the amplification view of viewing angle control pixel shown in Figure 1;
Fig. 7 is another amplification view of viewing angle control pixel shown in Figure 1;
The AC that Fig. 8 shows common electric voltage (Vcom) and each rgb pixel applies the relation between the voltage;
Fig. 9 is the figure of wavelength that represents the signal wire of the some counter-rotating (dotinversion) in the LCD device according to the preferred embodiment of the invention;
To be explanation add the figure of the driver that is used to control the visual angle to LCD device according to the preferred embodiment of the invention for Figure 10 A and Figure 10 B;
To be explanation add the figure of the driver that is used to control the visual angle to LCD device according to the preferred embodiment of the invention to Figure 11;
Figure 12 A and Figure 12 B are the figure of wavelength that represents to put according to the preferred embodiment of the invention the signal wire of counter-rotating;
Figure 13 is the figure of LCD device that expression has the prior art of security schema;
Figure 14 is the planimetric map of each rgb pixel in the FFS type LCD device of explanation prior art; And
Figure 15 A and Figure 15 B are the figure of expression action of liquid crystal molecule when the FFS of prior art type LCD device applies voltage.
Embodiment
To explain the preferred embodiments of the present invention below, its example shown in the drawings.Under situation as much as possible, identical in the accompanying drawings Reference numeral is used to represent same or analogous parts.
Describe below with reference to accompanying drawings according to LCD device of the present invention.
Fig. 1 is each rgb pixel in the LCD device of representing in accordance with a preferred embodiment of the present invention and the planimetric map of viewing angle control pixel.
As shown in Figure 1, form each rgb pixel with the FFS pattern.Each rgb pixel has pixel electrode and public electrode 11, and wherein public electrode 11 is inserted between pixel electrode and the insulation course.Each rgb pixel comprises the public electrode 11 that forms "＜" shape.
Except rgb pixel, be formed with viewing angle control pixel 20 with the control visual angle.Viewing angle control pixel 20 be controlled as make liquid crystal molecule towards horizontal direction (about) or vertical direction (up and down) tilt.In this case, the viewing angle control line (not shown) by independent formation applies control voltage to viewing angle control pixel 20.
Viewing angle control pixel 20 comprise pixel electrode and along level (about) the public electrode 21a that forms of direction or the public electrode 21b (seeing Fig. 4 B) that forms along vertical (up and down) direction, they all are provided with the FFS pattern.Fig. 1 show level (about) the public electrode 21a of direction.When applying control by viewing angle control alignment viewing angle control pixel 20 during voltage, liquid crystal molecule towards vertical (up and down) or level (about) direction tilts, thereby the control visual angle.
As shown in Figure 1, by viewing angle control alignment viewing angle control pixel 20 supply control voltages, wherein Fu Jia viewing angle control line separates with the supply lines that is used for rgb pixel.At this moment, for viewing angle control pixel 20, the viewing angle control line is equivalent to independent concentric line, thereby wherein the viewing angle control line is formed by transparency electrode and improved the aperture ratio.And concentric line is individually formed, thereby can apply the voltage with predetermined wavelength to viewing angle control pixel 20.
And viewing angle control pixel 20 does not directly help to show.Viewing angle control pixel 20 is set so that be difficult to discern display message.Therefore, needn't form dyed layer in the filter substrate side relative with viewing angle control pixel 20.
The action of the liquid crystal molecule in the viewing angle control pixel 20 when applying or do not apply voltage will be described below.
Fig. 2 A and Fig. 2 B be expression have level shown in Figure 1 (about) view of the action of liquid crystal molecule in the viewing angle control pixel 20 of direction public electrode 21a.
Shown in Fig. 2 A, if not to have level (about) the viewing angle control pixel 20 of direction public electrode 21a applies voltage, then liquid crystal molecule orientation under horizontality, thus viewing angle control pixel 20 is shown as black, promptly whole display is unaffected.This preceding visual angle, vertical (up and down) and level (about) all the same in visual angle and the inclination visual angle.Normally use all demonstrations of rgb pixel.
If shown in Fig. 2 B, to have level (about) the viewing angle control pixel 20 of direction public electrode 21a applied voltage, then in the center section and the center section between each public electrode 21a of public electrode 21a, liquid crystal molecule vertically erects.Therefore, when along level (about) during direction observation visual angle control pixel 20, light see through level (about) the public electrode 21a of direction.On the other hand, when along vertical (up and down) direction observation visual angle control pixel 20, light can not see through level (about) the public electrode 21a of direction.
Simultaneously, shown in Fig. 4 B, when when the viewing angle control pixel 20 with vertical (up and down) direction public electrode 21b applies voltage, in the center section and the center section between each public electrode 21b of public electrode 21b, liquid crystal molecule is differing vertical erecting on 90 directions of spending with the direction shown in Fig. 2 B.Therefore, when along level (about) during direction observation visual angle control pixel 20, light can not see through the public electrode 21b of vertical (up and down) direction.On the other hand, when along vertical (up and down) direction observation visual angle control pixel 20, the public electrode 21b of vertical (up and down) direction of light transmission.
The result, applying to viewing angle control pixel 20 under the state of voltage, level (about) on the visual angle of direction, have level (about) the viewing angle control district of the public electrode 21a of direction is identified as white, and the viewing angle control district with public electrode 21b of vertical (up and down) direction is identified as black.
On the visual angle of vertical direction, have level (about) the viewing angle control district of the public electrode 21a of direction is identified as black, and the viewing angle control district with public electrode 21b of vertical (up and down) direction is identified as white.
And, level (about) on the visual angle of direction and vertical (up and down) direction, the public display pattern of these patterns and rgb pixel is overlapping.Therefore, when along level (about) direction when vertical (up and down), direction was observed these patterns, can't identify what has been write, thereby realize maintaining secrecy of display message.
As mentioned above, corresponding to the viewing angle control pixel 20 of each rgb pixel comprise level (about) among the public electrode 21a of direction and the public electrode 21b of vertical (up and down) direction one.Thereby, can by apply to viewing angle control pixel 20 voltage make level (about) or vertical (up and down) direction of observation on demonstration brighten, thereby on the both direction except forward direction, realize having the demonstration of the confidentiality of expection.
Fig. 3 is illustrated in according to the preferred embodiment of the invention in the viewing angle control pixel, is applying on the basis of voltage the visual angle interdependence of Luminance Distribution.Fig. 3 shows such situation: viewing angle control pixel 20 have level shown in Figure 1 (about) the public electrode 21a of direction.
If do not apply voltage to viewing angle control pixel 20, then the brightness of vergence direction be equivalent to forward direction and level (about) with the side direction of vertical (up and down) direction on blank screen.If applied voltage to viewing angle control pixel 20, then the place ahead is in black, and light transmission to level (about) with the side direction of vertical (up and down) direction.
As a result, light transmission to level (about) with the side direction of vertical (up and down) direction.Thereby, if the people be positioned at display level (about) with the side direction of vertical (up and down) direction, just be difficult to identify image shown on the display board, thereby realized maintaining secrecy of display message.
Fig. 4 A and Fig. 4 B represent each rgb pixel in the LCD device according to the preferred embodiment of the invention and the planimetric map of viewing angle control pixel.
Structurally each pixel with shown in Figure 1 is identical with the viewing angle control pixel for each rgb pixel.In Fig. 4 A, each rgb pixel comprises the public electrode 11a that forms "＜" shape, with the improvement level (about) visuality of direction.In addition, by the level in viewing angle control pixel 20 (about) the public electrode 21a of direction applies voltage, can level (about) realize the confidentiality of display message on the direction.
RGB shown in Fig. 4 B and viewing angle control pixel have visuality and the security schema that differs 90 degree with the pixel shown in Fig. 4 A.
In Fig. 4 B, each rgb pixel comprises the public electrode 11b that forms " V " shape, to improve the visuality of vertical (up and down) direction.When the public electrode 21b of vertical (up and down) direction in viewing angle control pixel 20 applies voltage, can on vertical (up and down) direction, realize the confidentiality of display message.
Fig. 5 is the figure of expression when the visual angle interdependence of Luminance Distribution when viewing angle control pixel 20 applies or do not apply voltage.
Fig. 5 shows such situation: use together and have the level shown in Fig. 4 A (about) the viewing angle control pixel 20 of the public electrode 21a of direction and the viewing angle control pixel 20 of the public electrode 21b with vertical (up and down) direction shown in Fig. 4 B.If do not apply voltage to viewing angle control pixel 20, then with respect to the place ahead and level (about) with the brightness of the vergence direction of the side of vertical (up and down) direction corresponding to black.
If applied voltage to viewing angle control pixel 20, then the place ahead is for black, and light level (about) with the vergence direction of vertical (up and down) direction on see through.As a result, when from level (about) when observing, can't discern what has been write with the vergence direction of vertical (up and down) direction, thereby realize the confidentiality of display message.
Owing to have level having arranged on the display screen (about) the viewing angle control pixel of the public electrode 21a of direction and the viewing angle control pixel of the public electrode 21b with vertical (up and down) direction, so can realize having the LCD device of information privacy.For example, have level (about) the viewing angle control pixel of the public electrode 21a of direction and viewing angle control pixel arrangement with public electrode 21b of vertical (up and down) direction become to form shape or the character of being scheduled on display screen.
As mentioned above, the viewing angle control pixel is independent of rgb pixel and forms, thus can realize controlling vertical (up and down) and level (about) the LCD device at visual angle on the direction.In addition, have level suitably arranging on the display screen (about) the viewing angle control pixel of the public electrode 21a of direction and the viewing angle control pixel of the public electrode 21b with vertical (up and down) direction, can easily realize having the LCD device of information privacy.
And, needn't form dyed layer in the filter substrate side relative, thereby reduce manufacturing cost with the viewing angle control pixel.
Fig. 6 is the amplification view of viewing angle control pixel shown in Figure 1.At this moment, (thin film transistor (TFT) TFT) applies voltage to viewing angle control pixel 20 shown in Figure 6 by on-off element.
Fig. 7 is another amplification view of viewing angle control pixel shown in Figure 1.If attempt on entire display screen, to realize the confidentiality of display message, then under the situation that does not have switch control, jointly apply voltage to each viewing angle control pixel 20.Therefore, each viewing angle control pixel 20 shown in Figure 7 directly links to each other with signal wire under the situation that does not have on-off element (TFT).
The AC that Fig. 8 shows common electric voltage (Vcom) and each rgb pixel applies the relation between the voltage.Based on the amplitude of signal, apply voltage to the viewing angle control pixel.
After each rgb pixel applies voltage signal, voltage is owing to the conflict of on-off element (TFT) descends.Therefore, as shown in Figure 8, the intermediate value that common electric voltage (Vcom) compares the voltage signal that is applied is little.
As shown in Figure 7, needn't provide on-off element (TFT) to viewing angle control pixel 20.Thereby the voltage that the conflict because of the TFT in the rgb pixel causes can not appear in viewing angle control pixel 20.As a result, the best common electric voltage of viewing angle control pixel 20 is different with the best common electric voltage of rgb pixel.
Yet, if rgb pixel has different common electric voltages with the viewing angle control pixel, blurred picture can appear.Therefore, LCD device of the present invention comprises the viewing angle control voltage regulator, and this viewing angle control voltage regulator is adjusted to the signal intermediate value of viewing angle control pixel 20 identical with the common electric voltage of rgb pixel.
That is, the viewing angle control voltage regulator reads the common electric voltage of each rgb pixel; The intermediate value that imposes on the voltage signal of viewing angle control pixel 20 is adjusted to substantially the same with the common electric voltage of rgb pixel; And output applies voltage signal.As a result, LCD device of the present invention can prevent blurred picture.
Fig. 9 is the figure of wavelength that represents the signal wire of the DOT counter-rotating in the LCD device according to the preferred embodiment of the invention.Fig. 9 shows the wavelength of the signal wire of each rgb pixel and viewing angle control pixel 20.
With reference to Fig. 9, if additionally be provided with viewing angle control pixel 20, then one group comprises four pixels, and three included pixels are a RGB and pixel is the viewing angle control pixel, and they are repeatedly arranged.
Therefore, the signal of the wavelength that the AC in the viewing angle control pixel applies voltage when forming these four pixels is corresponding, thereby is formed by the signal of same type.Therefore, the viewing angle control voltage regulator makes the control signal of this voltage signal and rgb pixel synchronous, and simultaneously to all identical voltage signals of viewing angle control pixel output, thereby the structure that realization is simplified.
For the above embodiment of the present invention, even being independent of rgb pixel, the viewing angle control pixel forms, also needn't control the viewing angle control pixel independently.Thereby, can easily make the LCD device that can control the visual angle.
In addition, apply voltage signal to the viewing angle control pixel, wherein this voltage signal has the signal intermediate value identical with the common electric voltage of rgb pixel.Thereby the LCD device can prevent blurred picture.
And, use the signal conduct of same type to impose on the voltage signal of viewing angle control pixel, thereby realized the structure of simplifying.
Below explanation is controlled the driver at visual angle on the basis of having added the viewing angle control pixel.
Figure 10 A and Figure 11 are the figure that represents to be used to according to the preferred embodiment of the invention to control the driver at visual angle.
At first, Figure 10 A comprises the rgb pixel of prior art, and it shows the layout of the driver in the LCD device with super XGA (Extended Graphics Array) (SXGA) resolution.At this moment, " X " driver has the output of 1280 lines * RGB, and " Y " driver has the output of 1024 lines.
Figure 10 B shows the layout when the driver when rgb pixel additionally is provided with the viewing angle control pixel." X " driver for the prior art that realizes having the output that is used for the viewing angle control pixel is necessary additionally to provide the output of 1280 lines.
In the present invention, can be provided for the output of viewing angle control pixel individually by opposite side at " X " driver that is used for rgb pixel, thereby at " X " driver that does not have to be provided under the situation about changing rgb pixel.
By structure shown in Figure 11, apply signal with the viewing angle control pixel of the signal Synchronization of rgb pixel from the opposite side of " X " driver.
Figure 12 A and Figure 12 B represent the figure of the wavelength of the signal wire of DOT counter-rotating according to the preferred embodiment of the invention.
Figure 12 A shows the wavelength of the signal wire in each rgb pixel of prior art.Figure 12 B shows the wavelength according to the signal wire in the LCD device that comprises viewing angle control pixel 20 of the present invention.
With reference to Figure 12 B, if viewing angle control pixel 20 additionally is set, then one group comprises four pixels, and three included pixels are a RGB and pixel is the viewing angle control pixel, and they are repeatedly arranged.
Therefore, the signal of the wavelength that the AC in the viewing angle control pixel applies voltage when forming these four pixels is corresponding, is formed by the signal of same type.Therefore, the control signal that imposes on the voltage signal of viewing angle control pixel and rgb pixel is synchronous, and is applied in simultaneously to all viewing angle control pixels.
For the above embodiment of the present invention, the LCD device can be independent of the viewing angle control pixel that rgb pixel forms by setting and control the visual angle.
In addition, the driver that is used for the viewing angle control pixel is arranged on the opposite side of " X " driver that is used for rgb pixel, thereby can control the visual angle under the situation of the layout of " X " driver that does not change prior art.
And the signal of same type jointly is used as imposes on the voltage signal of viewing angle control pixel, thereby has realized the structure of simplifying.
LCD device according to the present invention comprises: rgb pixel, tilt with the FFS pattern at this place's liquid crystal molecule; And the viewing angle control pixel, this place's liquid crystal molecule towards level (about) or vertical (up and down) direction tilt, thereby can controlling level under the situation that does not form special LCD panel (about) with the visual angle of vertical (up and down) direction.
And even the viewing angle control pixel does not have on-off circuit, the LCD device also can prevent blurred picture under the situation that does not form special LCD panel, and can controlling level (about) with the visual angle of vertical (up and down) direction.
In addition, the driver that is used for the viewing angle control pixel is arranged on the opposite side of the driver that is used for rgb pixel, thereby needn't form special LCD panel.And the LCD device can be under the situation that does not change the driver that is used for rgb pixel, controlling level (about) with the visual angle of vertical (up and down) direction.
It will be apparent to those skilled in the art that, under the situation that does not break away from the spirit or scope of the present invention, can carry out various modifications and variations the present invention.Thereby if these are revised and modification falls in the scope of claims and equivalent thereof, then these modifications and modification are also contained in the present invention.
Claims (10)
1, a kind of liquid crystal indicator, this liquid crystal indicator comprises:
Display screen, this display screen comprises a plurality of colored pixels and liquid crystal molecule; And
Control the viewing angle control pixel of described liquid crystal molecule, tilt towards horizontal or vertical direction in the alignment direction of liquid crystal molecule described in the described display screen.
2, device according to claim 1, wherein, with described viewing angle control pixel opposing substrates on do not have to form the dyed layer that constitutes by color filter.
3, device according to claim 1, wherein, be provided with together to be controlled as and make viewing angle control pixel that liquid crystal molecule tilts in vertical direction and be controlled as the viewing angle control pixel that makes that liquid crystal molecule tilts in the horizontal direction, thereby on described display screen, form predetermined shape or character.
4, device according to claim 1 wherein, is not having under the situation of on-off element, and a plurality of viewing angle control pixels in described display screen jointly apply the viewing angle control signal.
5, device according to claim 4, this device also comprises the viewing angle control voltage regulator, this viewing angle control voltage regulator is adjusted to the intermediate value of described viewing angle control signal substantially the same with the common electric voltage of described colored pixels.
6, device according to claim 5, wherein, the signal Synchronization of described viewing angle control signal and described colored pixels.
7, device according to claim 1, this device also comprises:
The colored pixels driver, this colored pixels driver applies signal to described colored pixels, and is formed on a side of described display screen; And
The viewing angle control pixel driver, this viewing angle control pixel driver applies signal to described viewing angle control pixel, and is formed on the opposite side of described display screen.
8, device according to claim 7, this device also comprises the viewing angle control voltage regulator, this viewing angle control voltage regulator is adjusted to the intermediate value of described viewing angle control signal identical with the common electric voltage of described colored pixels.
9, device according to claim 7, wherein, the signal Synchronization of described viewing angle control signal and described colored pixels.
10, device according to claim 1, wherein, described liquid crystal indicator has fringe field switching mode.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005377201 | 2005-12-28 | ||
| JP2005377201A JP5113333B2 (en) | 2005-12-28 | 2005-12-28 | Liquid crystal display |
| JP2005377204 | 2005-12-28 | ||
| JP2005377203 | 2005-12-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1991471A true CN1991471A (en) | 2007-07-04 |
| CN100483200C CN100483200C (en) | 2009-04-29 |
Family
ID=38213842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006101725390A Active CN100483200C (en) | 2005-12-28 | 2006-12-28 | Liquid crystal display device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5113333B2 (en) |
| KR (1) | KR101255308B1 (en) |
| CN (1) | CN100483200C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101206331B (en) * | 2006-12-18 | 2010-08-18 | 乐金显示有限公司 | Liquid crystal display device and method for manufacturing the same |
| CN107678598A (en) * | 2014-12-02 | 2018-02-09 | 广东欧珀移动通信有限公司 | Touching display screen structure and its manufacture method and terminal |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101219319B1 (en) * | 2005-12-29 | 2013-01-08 | 엘지디스플레이 주식회사 | Liquid crystal display device |
| KR20070070721A (en) * | 2005-12-29 | 2007-07-04 | 엘지.필립스 엘시디 주식회사 | Liquid crystal display device and driving method thereof |
| JP4940954B2 (en) * | 2007-01-09 | 2012-05-30 | ソニー株式会社 | Liquid crystal device and electronic device |
| US8698988B2 (en) | 2007-01-09 | 2014-04-15 | Japan Display West Inc. | Liquid crystal device having viewing angle control pixels |
| KR100836495B1 (en) * | 2007-04-18 | 2008-06-09 | 엘지디스플레이 주식회사 | Liquid crystal display device and driving method thereof |
| JP5477884B2 (en) * | 2008-03-24 | 2014-04-23 | 株式会社ジャパンディスプレイ | Liquid crystal device and electronic device |
| JP2009229800A (en) * | 2008-03-24 | 2009-10-08 | Epson Imaging Devices Corp | Liquid crystal display device and electronic equipment |
| JP5301251B2 (en) | 2008-11-27 | 2013-09-25 | 株式会社ジャパンディスプレイウェスト | Liquid crystal display |
| JP5247477B2 (en) * | 2009-01-09 | 2013-07-24 | 株式会社ジャパンディスプレイウェスト | Liquid crystal display |
| JP5299083B2 (en) * | 2009-05-20 | 2013-09-25 | 株式会社ジャパンディスプレイ | Liquid crystal display |
| JP2011158690A (en) | 2010-02-01 | 2011-08-18 | Sony Corp | Liquid crystal display panel and electronic apparatus |
| TWI428675B (en) * | 2011-05-19 | 2014-03-01 | Au Optronics Corp | Display apparatus |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100978254B1 (en) * | 2003-06-30 | 2010-08-26 | 엘지디스플레이 주식회사 | In plane switching mode liquid crystal display device having 4-pixel structure |
| KR101186863B1 (en) * | 2003-12-29 | 2012-10-05 | 엘지디스플레이 주식회사 | Multi-domain in plane switching mode liquid crystal display device |
| KR20050081744A (en) * | 2004-02-16 | 2005-08-19 | 비오이 하이디스 테크놀로지 주식회사 | Fringe field switching liquid crystal display device |
| JP4516348B2 (en) * | 2004-04-21 | 2010-08-04 | 株式会社 日立ディスプレイズ | Liquid crystal display |
-
2005
- 2005-12-28 JP JP2005377201A patent/JP5113333B2/en active Active
-
2006
- 2006-05-10 KR KR1020060041801A patent/KR101255308B1/en active IP Right Grant
- 2006-12-28 CN CNB2006101725390A patent/CN100483200C/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101206331B (en) * | 2006-12-18 | 2010-08-18 | 乐金显示有限公司 | Liquid crystal display device and method for manufacturing the same |
| CN107678598A (en) * | 2014-12-02 | 2018-02-09 | 广东欧珀移动通信有限公司 | Touching display screen structure and its manufacture method and terminal |
| CN107678598B (en) * | 2014-12-02 | 2020-07-03 | Oppo广东移动通信有限公司 | Touch display screen structure, manufacturing method thereof and terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20070070016A (en) | 2007-07-03 |
| JP5113333B2 (en) | 2013-01-09 |
| KR101255308B1 (en) | 2013-04-15 |
| CN100483200C (en) | 2009-04-29 |
| JP2007178736A (en) | 2007-07-12 |
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