CN102279482A - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
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- CN102279482A CN102279482A CN2010102041703A CN201010204170A CN102279482A CN 102279482 A CN102279482 A CN 102279482A CN 2010102041703 A CN2010102041703 A CN 2010102041703A CN 201010204170 A CN201010204170 A CN 201010204170A CN 102279482 A CN102279482 A CN 102279482A
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Abstract
The embodiment of the invention discloses a liquid crystal display device, which relates to the technical field of liquid crystal and is used for solving the problem of dynamic picture tailing of an ultrathin liquid crystal display device using a side face light source such as an LED TV (Light-Emitting Diode Television) large-sized liquid crystal display device. The liquid crystal display device comprises a liquid crystal panel and a backlight source; a gap is reserved between the liquid crystal panel and the backlight source; and a light emitting switch is arranged in the gap, and is used for partitioning the light emitting surface of the backlight source into at least two regions and controlling the pass or non-pass of backlight in every region respectively. The liquid crystal display device is mainly applied to liquid crystal products.
Description
Technical field
The present invention relates to the liquid crystal technology field, relate in particular to liquid crystal indicator.
Background technology
In the liquid crystal technology field, because response speed of liquid crystal can cause the dynamic menu tailing problem of display panels inadequately soon.In the liquid crystal indicator of existing high-speed driving, the mode that can adopt backlight scanning or subregion to drive is improved the dynamic menu tailing problem of display panels.
Described scanning backlight is made up of a plurality of light sources usually, and described light source can be cold cathode fluorescent lamp (CCFL), also can be light emitting diode illuminating sources such as (LED).The scanning backlight that constitutes with CCFL is an example, sketch described scanning backlight source structure and principle of work: described scanning backlight is made up of many CCFL, the zone that each root CCFL illuminates constitutes a block, the fluorescent tube signal scans to the lower end from the upper end of panel, when the fluorescent tube signal scanning arrives certain position, the CCFL of corresponding block just opens, and the CCFL of other block closes; After the fluorescent tube signal scanning was gone over, the CCFL frontier juncture of corresponding block was closed.As: when the fluorescent tube signal had just begun to scan topmost, then corresponding topmost CCFL opened other all CCFL Close Alls.When the fluorescent tube signal scanning arrived bottom, then corresponding bottom CCFL opened other all CCFL Close Alls.The described scanning backlight course of work is equivalent to the fluorescent tube signal and backlightly scans from top to bottom with same speed.This scheme can reduce the dynamic menu tailing problem of display panels preferably.
But the mode that described backlight scanning or subregion drive only is suitable for direct-lighting backlight.For non-direct-lighting backlight, just can not solve the dynamic menu tailing problem of display panels by the mode that backlight scanning or subregion drive.
At present, a lot of liquid crystal indicators then use the side light source as the ultrathin liquid crystal indicator of the large-scale liquid crystal indicator of LED TV, are difficult to realize that backlight scanning or subregion drive this moment.So the mode that also just can not adopt backlight scanning or subregion to drive is improved the dynamic menu tailing problem of display panels.
Summary of the invention
Embodiments of the invention provide a kind of liquid crystal indicator, can be good at solving the dynamic menu tailing problem of the liquid crystal indicator that uses non-direct-lighting backlight.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A kind of liquid crystal indicator comprises liquid crystal panel and backlight, leave the gap between described liquid crystal panel and the backlight, be provided with out photoswitch in the described gap, describedly go out photoswitch the exiting surface of described backlight is divided at least two zones, and control backlight the passing through or do not pass through in each zone respectively.
Whether the liquid crystal indicator that the embodiment of the invention provides leaves the gap between described liquid crystal panel and the backlight, is provided with out photoswitch between described liquid crystal panel and the backlight, describedly go out photoswitch control backlight light and pass through.Backlight can just can be realized the subregion irradiation to liquid crystal panel without any need for variation.Because the backlight light of the described liquid crystal indicator of the embodiment of the invention goes out photoswitch control by described, rather than the switch of control light source itself, light source itself can be the side light source.Therefore, this implements the ultrathin liquid crystal indicator that described liquid crystal indicator can be applicable to the large-scale liquid crystal indicator of LED TV that uses the side light source.Can solve the dynamic menu tailing problem of ultrathin liquid crystal indicator of the large-scale liquid crystal indicator of LED TV of described use side light source.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the invention, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the described liquid crystal indicator structural drawing of the embodiment of the invention;
Fig. 2 is the structural drawing of the preferred embodiment of the described liquid crystal indicator of the embodiment of the invention;
Fig. 3 is the transparent conductivity film figure of the described liquid crystal indicator of the embodiment of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
The embodiment of the invention provides a kind of liquid crystal indicator, as shown in Figure 1, described liquid crystal indicator comprises the liquid crystal panel 1 that is used for display frame, is used for providing backlight 2 backlight to described liquid crystal panel 1, leave the gap between the exiting surface of described backlight 2 and the described liquid crystal panel 1, be provided with out photoswitch 3 in the described gap, describedly go out photoswitch 3 exiting surface of described backlight 2 is divided at least two zones, describedly go out photoswitch and control passing through or not passing through of light backlight in each zone respectively.
The liquid crystal indicator that present embodiment provides, leave the gap between described liquid crystal panel and the backlight, be provided with out photoswitch between described liquid crystal panel and the described backlight, describedly go out photoswitch control backlight light and whether pass through, do not need backlight to do any variation, just can realize subregion irradiation liquid crystal panel.Because the backlight light of the described liquid crystal indicator of the embodiment of the invention goes out photoswitch control by described, rather than the switch of control light source itself, therefore, this implements the ultrathin liquid crystal indicator that described liquid crystal indicator can be applicable to the large-scale liquid crystal indicator of LED TV that uses the side light source.Can solve the dynamic menu tailing problem of ultrathin liquid crystal indicator of the large-scale liquid crystal indicator of LED TV of described use side light source.
A kind of improvement as present embodiment, the invention provides another kind of liquid crystal indicator, as shown in Figure 2, comprise: be used for display frame liquid crystal panel 4, be used for providing backlight 5 backlight to described liquid crystal panel 4, leave the gap between the exiting surface of described backlight 5 and the described liquid crystal panel 4, be provided with out photoswitch 6 in the described gap, describedly go out photoswitch 6 exiting surface of described backlight 5 is divided at least two zones, describedly go out photoswitch and control backlight passing through or do not pass through in each zone respectively.Wherein, describedly go out photoswitch and comprise a pair of Ranvier's membrane 7, liquid crystal layer 8, the envelope frame glue 9 that leaves the gap each other.
Described a pair of Ranvier's membrane 7 is for the conductive film of array base palte one side surface that is arranged on described liquid crystal panel 4 and be arranged on conductive film on the exiting surface of described backlight 5, described a pair of Ranvier's membrane 7 is provided with at least two transparency electrodes, and described liquid crystal layer 8 is positioned at the gap of described a pair of Ranvier's membrane 7.
Described envelope frame glue 9 makes described a pair of Ranvier's membrane 7 leave the gap each other, and with involutory sealing around the surface of the array base palte one side correspondence of described backlight 5 exiting surfaces and described liquid crystal panel 4.
Whether the liquid crystal indicator that present embodiment provides leaves the gap between described liquid crystal panel and the backlight, is provided with out photoswitch between described liquid crystal panel and the backlight, describedly go out photoswitch control backlight light and pass through.The described liquid crystal indicator of present embodiment is provided with electrode on described Ranvier's membrane, apply voltage for described liquid crystal layer, and the row who makes described liquid crystal molecule is to changing the upset of control liquid crystal molecule.To also different these characteristics of asynchronous transmittance, when the vertical light of described liquid crystal molecule was arranged, light can pass through described liquid crystal layer according to liquid crystal molecule row; When described liquid crystal molecule and light were arranged in parallel, light can not pass through described liquid crystal layer.Reach the only purpose by described liquid crystal layer not of control, and then control described liquid crystal panel and whether show row to the pairing picture of the liquid crystal molecule that changes, thus the dynamic menu tailing problem of solution liquid crystal indicator.
Because the backlight light of the described liquid crystal indicator of the embodiment of the invention is controlled by the photoswitch that goes out that described Ranvier's membrane, liquid crystal layer, envelope frame glue constitute, rather than the switch of control light source itself, light source itself can not done any variation, just can realize the subregion irradiation to liquid crystal panel.Therefore, this implements the ultrathin liquid crystal indicator that described liquid crystal indicator can be applicable to the large-scale liquid crystal indicator of LED TV that uses the side light source.Can solve the dynamic menu tailing problem of ultrathin liquid crystal indicator of the large-scale liquid crystal indicator of LED TV of described use side light source.
A kind of improved embodiment as present embodiment, be provided with a plurality of transparency electrodes on the Ranvier's membrane in described a pair of Ranvier's membrane, and being divided into a plurality of drive areas according to described a plurality of transparency electrodes, each transparency electrode drives the liquid crystal molecule in each self-corresponding drive area.
In order better to solve the dynamic menu tailing problem of liquid crystal display, the drive area that described transparency electrode is divided is The more the better.It is many more that described drive area is divided, then the quantity of the liquid crystal molecule that can control of each drive area is just few more, the area of the display panels of then described liquid crystal molecule correspondence also can be more little, and the pixel of the display panels of then described liquid crystal molecule correspondence also can be few more.Thereby the image to display panels shows that control is accurate more.Because liquid crystal molecule is small-sized, the size of the block that the light source in the described backlight illuminates can be controlled more accurately, the zone that should illuminate and the regional boundary line that should not illuminate can determine more accurately that the streaking part that should not be illuminated can not illuminated by the light source of contiguous light yellow substantially.Compared with prior art, use the described liquid crystal indicator of the embodiment of the invention, can solve the dynamic menu tailing problem of display panels better.
In the described liquid crystal indicator of present embodiment, described drive area can be that the length of side is between 2 millimeters to 100 millimeters.
The size of described drive area is more little, the zone that described liquid crystal layer is divided is just many more, the liquid crystal molecule area that each electrically conducting transparent piece can be controlled is more little, it is also just accurate more that each electrically conducting transparent piece can be controlled light-struck zone, also just can solve the dynamic menu tailing problem of display panels better.Otherwise, when the size of described electrically conducting transparent piece is big more, the zone that described liquid crystal layer is divided is just few more, the liquid crystal molecule area that each electrically conducting transparent piece can be controlled is big more, it is also just big more that each electrically conducting transparent piece can be controlled light-struck zone, in the liquid crystal panel zone of an electrically conducting transparent piece correspondence, the situation that the image that should be shown also comprises the hangover part of the image that should not be shown can appear both having included, because the liquid crystal panel of each electrically conducting transparent piece correspondence zone can be shown simultaneously or do not shown simultaneously, then the hangover of the image that should not be shown part also can be shown simultaneously, therefore, just can not solve the dynamic menu tailing problem of display panels well.
When the described electrically conducting transparent piece of the present embodiment length of side is got 2 millimeters, the liquid crystal area of described electrically conducting transparent piece correspondence is less, what described liquid crystal layer was divided is regional abundant, when described electrically conducting transparent piece is applied voltage, the change of described electrically conducting transparent piece correspondence row to the area of liquid crystal molecule less, the area of then described liquid crystal printing opacity is less, can solve the dynamic menu tailing problem of display panels well, but, because described electrically conducting transparent piece size is less, the manufacture craft more complicated.
When the described electrically conducting transparent piece of the present embodiment length of side is got 100 millimeters, though manufacture craft is more fairly simple, but, the liquid crystal area of described electrically conducting transparent piece correspondence is bigger, what described liquid crystal layer was divided is regional insufficient, when described electrically conducting transparent piece is applied voltage, change row to the area of liquid crystal molecule bigger, the area of then described liquid crystal printing opacity is bigger, the situation that the image that should be shown also comprises the hangover part of the image that should not be shown can appear both having included in liquid crystal panel, can not solve the dynamic menu tailing problem of display panels well.
The described electrically conducting transparent piece of the present embodiment length of side can be got any value between 2 millimeters to 100 millimeters, such as getting 10 millimeters, 20 millimeters, 30 millimeters, 40 millimeters, 50 millimeters, 60 millimeters, 70 millimeters, 80 millimeters, 90 millimeters.
As present embodiment preferred embodiment, described a pair of Ranvier's membrane is provided with at least two transparency electrodes, described at least two transparency electrodes are located at respectively in the described a pair of Ranvier's membrane, transparency electrode and following transparency electrode in the formation, and by described transparency electrode and the following transparency electrode differentiation driving field of going up, each drive area is driven respectively.
Described transparency electrode and the described transparency electrode down of going up is set, makes and describedly go up transparency electrode and describedly be separated from each other between transparency electrode down, each drive area can better be controlled in control drive area separately separately.
As present embodiment preferred embodiment, as shown in Figure 3, the described drive area that goes out photoswitch is made of MxN display, and wherein M, N are the natural number more than or equal to 1.
The described drive area that goes out photoswitch is made of MxN display can make that described to go out photoswitch more orderly, more accurate to the control of passing through or not passing through backlight of described drive area.
Preferred embodiment a kind of as present embodiment: described liquid crystal panel comprises array base palte, color membrane substrates; Described array base palte and color membrane substrates are provided with Polarizer back to two faces of a side, and the Polarizer of described array base palte one side is provided with conductive film.A Ranvier's membrane in the described a pair of Ranvier's membrane is the described Polarizer that is provided with conductive film.The described transparent and electrically conductive film of present embodiment can use ITO (nano indium tin metal oxide) film with described backlight polaroid one.
As a Ranvier's membrane in the described a pair of Ranvier's membrane, make the manufacture craft of described liquid crystal indicator simpler the Polarizer that is provided with conductive film.
As another preferred embodiment of present embodiment, described backlight comprises light source, framework and light guide plate, and the exiting surface of described light guide plate is provided with at least one blooming piece;
Wherein, described light source provides backlight by blooming piece is described to liquid crystal panel, described light source of described frame fixation and described blooming piece; A blooming piece being located at the backlight topmost is provided with conductive film.
A Ranvier's membrane in the described a pair of Ranvier's membrane is a blooming piece being located at the backlight topmost.
As a Ranvier's membrane in the described a pair of Ranvier's membrane, make the manufacture craft of described liquid crystal indicator simpler the blooming piece that is provided with conductive film.
As present embodiment preferred embodiment, the distance between the described a pair of Ranvier's membrane is less than 50um.
The thickness of the described liquid crystal of present embodiment can be between 1 micron to 100 microns.
The thickness of described liquid crystal can be got any value between 1 micron, 10 microns, 20 microns, 30 microns, 40 microns, 50 microns, 60 microns, 70 microns, 80 microns, 90 microns, 100 microns etc. 1 micron to 100 microns.
The described liquid crystal indicator of present embodiment, described liquid crystal panel and described backlight directly link to each other by the liquid crystal of envelope frame glue sealing, have saved in the prior art liquid crystal panel and by the gap between the light source, have reduced the integral thickness of described liquid crystal indicator.Described liquid crystal is thin more, and then described liquid crystal indicator is also just thin more.
For the thickness that makes described liquid crystal indicator is more little, the light source of the described backlight of present embodiment can use the luminous light emitting diode in limit (led-edge).
The gross thickness of liquid crystal panel and backlight reaches 10 millimeters to 20 millimeters in the prior art, and liquid crystal indicator thickness of the present invention can reach 2 millimeters.
The thickness of the described liquid crystal indicator of present embodiment depends on the distance between the described a pair of Ranvier's membrane to a great extent, and the distance between the described a pair of Ranvier's membrane is more little, then can make described liquid crystal indicator integral thickness more little.
In order to make the liquid crystal molecule in the described liquid crystal layer that goes out in the photoswitch under original state, keep the state vertical with light backlight, the described liquid crystal layer that goes out in the photoswitch be vertical row to negative liquid crystal.
For make described go out photoswitch can passing through and not passing through according to the control light backlight of the picture accurate of liquid crystal panel, describedly go out the transparency electrode of photoswitch and link to each other, described drive area and the described liquid crystal panel driven in synchronism that goes out photoswitch with controller to the liquid crystal panel input signal.
The described liquid crystal indicator of present embodiment is mainly used in LCD product.
The above; only be the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by described protection domain with claim.
Claims (10)
1. a liquid crystal indicator comprises liquid crystal panel and backlight, it is characterized in that: leave the gap between described liquid crystal panel and the backlight, be provided with out photoswitch in the described gap, describedly go out photoswitch the exiting surface of described backlight is divided at least two zones, and control backlight the passing through or do not pass through in each zone respectively.
2. liquid crystal indicator according to claim 1 is characterized in that: describedly go out photoswitch and comprise a pair of Ranvier's membrane, liquid crystal layer, the envelope frame glue that leaves the gap each other;
Described a pair of Ranvier's membrane be arranged on described liquid crystal panel array base palte one side surface conductive film and be arranged on conductive film on the exiting surface of described backlight, described a pair of Ranvier's membrane is provided with at least two transparency electrodes, and described liquid crystal layer is positioned at the gap of described a pair of Ranvier's membrane;
Described envelope frame glue makes described a pair of Ranvier's membrane leave the gap each other, and with involutory sealing around the surface of the array base palte one side correspondence of described backlight exiting surface and described liquid crystal panel.
3. display panels according to claim 2, it is characterized in that: a Ranvier's membrane in the described a pair of Ranvier's membrane is provided with a plurality of transparency electrodes, and being divided into a plurality of drive areas according to described a plurality of transparency electrodes, each transparency electrode drives the liquid crystal molecule in each self-corresponding drive area.
4. liquid crystal indicator according to claim 2, it is characterized in that: described a pair of Ranvier's membrane is provided with at least two transparency electrodes, described at least two transparency electrodes are located at respectively in the described a pair of Ranvier's membrane, transparency electrode and following transparency electrode in the formation, and by described transparency electrode and the following transparency electrode differentiation driving field of going up, each drive area is driven respectively.
5. according to claim 3 or 4 described liquid crystal indicators, it is characterized in that: the described drive area that goes out photoswitch is made of MxN display, and wherein M, N are the natural number more than or equal to 1.
6. liquid crystal indicator according to claim 2 is characterized in that: described liquid crystal panel comprises array base palte, color membrane substrates; Described array base palte and color membrane substrates are provided with Polarizer back to two faces of a side, and a Ranvier's membrane in the described a pair of Ranvier's membrane is the described Polarizer that is provided with conductive film.
7. liquid crystal indicator according to claim 2 is characterized in that: described backlight comprises light source, framework and light guide plate, and the exiting surface of described light guide plate is provided with at least one blooming piece;
Wherein, described light source provides backlight by blooming piece is described to liquid crystal panel, described light source of described frame fixation and described blooming piece;
A Ranvier's membrane in the described a pair of Ranvier's membrane is a blooming piece being located at the backlight topmost.
8. liquid crystal indicator according to claim 2 is characterized in that: the distance between the described a pair of Ranvier's membrane is less than 50um.
9. liquid crystal indicator according to claim 2 is characterized in that: the described liquid crystal layer that goes out in the photoswitch be vertical row to negative liquid crystal.
10. liquid crystal indicator according to claim 5 is characterized in that: describedly go out the transparency electrode of photoswitch and link to each other with controller to the liquid crystal panel input signal, described drive area and the described liquid crystal panel driven in synchronism that goes out photoswitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010102041703A CN102279482A (en) | 2010-06-11 | 2010-06-11 | Liquid crystal display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102041703A CN102279482A (en) | 2010-06-11 | 2010-06-11 | Liquid crystal display device |
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| CN102279482A true CN102279482A (en) | 2011-12-14 |
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| CN2010102041703A Pending CN102279482A (en) | 2010-06-11 | 2010-06-11 | Liquid crystal display device |
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Cited By (3)
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| WO2017088362A1 (en) * | 2015-11-23 | 2017-06-01 | 乐视控股（北京）有限公司 | Eled dynamic backlight control system and control method |
| CN108663850A (en) * | 2017-03-28 | 2018-10-16 | 腾讯科技（深圳）有限公司 | VR equipment and its display screen |
| CN112233623A (en) * | 2020-10-13 | 2021-01-15 | Tcl华星光电技术有限公司 | Display device and control method thereof |
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| US11620958B2 (en) | 2020-10-13 | 2023-04-04 | Tcl China Star Optoelectronics Technology Co., Ltd. | Display device and controlling method thereof |
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Application publication date: 20111214 |