CN104155801A - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
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- CN104155801A CN104155801A CN201410367774.8A CN201410367774A CN104155801A CN 104155801 A CN104155801 A CN 104155801A CN 201410367774 A CN201410367774 A CN 201410367774A CN 104155801 A CN104155801 A CN 104155801A
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Abstract
The invention discloses a liquid crystal display device which is used for reducing liquid crystal response time and increasing liquid crystal response speed so as to eliminate trailing smear. The liquid crystal display device comprises a liquid crystal display panel and a backlight module. The liquid crystal display panel comprises a liquid crystal layer. The liquid crystal layer comprises liquid crystals containing high-polarity groups. The backlight source in the backlight module includes an ultraviolet light source.
Description
Technical field
The present invention relates to technical field of liquid crystal display, relate in particular to a kind of liquid crystal indicator.
Background technology
Liquid crystal display product, with its light, thin feature, replaces cathode-ray tube (CRT) (Cathode Ray Tube, CRT) product gradually, becomes the main flow in market.But for CRT product, liquid crystal display product also has its weak point: the liquid crystal response time is longer, for example, the response time of common liquid crystals is 8-10ms.And the response time longly easily causes occurring motion blur phenomenon when showing dynamic menu.
For response time of reducing liquid crystal is to eliminate motion blur phenomenon, some solutions have been proposed in prior art.For example, by increasing the electrode of pixel, shorten the response time; Or, by changing Drive and Control Circuit, as improved the driving voltage of liquid crystal, shorten the response time of liquid crystal.But in realizing process of the present invention, inventor finds that in prior art, at least there are the following problems: by increasing the mode of the electrode of pixel, can cause aperture opening ratio to reduce, thereby the brightness of liquid crystal indicator is reduced; By improving the mode of the driving voltage of liquid crystal, will inevitably cause the increase of power consumption.
Summary of the invention
The embodiment of the present invention provides a kind of liquid crystal indicator, in order to reduce the response time of liquid crystal, improves the response speed of liquid crystal, thereby eliminates motion blur phenomenon.
A kind of liquid crystal indicator that the embodiment of the present invention provides, comprises display panels and backlight module, wherein:
Described display panels comprises liquid crystal layer, and described liquid crystal layer comprises the liquid crystal that contains strong polar group;
Backlight in described backlight module comprises ultraviolet source.
The liquid crystal indicator that the embodiment of the present invention provides, the liquid crystal that contains strong polar group by employing is as liquid crystal layer, and in backlight, add ultraviolet source, the liquid crystal that utilization contains strong polar group can be accelerated the characteristic of vibration, the response time that can effectively reduce liquid crystal in this display device under the irradiation of ultraviolet light.
Preferably, the bright dipping side of described liquid crystal layer is provided with for eliminating the protective film of ultraviolet light.
Preferably, described display panels also comprises the color membrane substrates that is arranged on liquid crystal layer one side, and described protective film is arranged between described liquid crystal layer and color membrane substrates, or is arranged on the side away from liquid crystal layer of described color membrane substrates.
The wavelength coverage of the ultraviolet light that preferably, described ultraviolet source sends is 300-400nm.
Preferably, described backlight also comprises visible light source, if described backlight adopts the backlight of side entering type structure, described visible light source and described ultraviolet source are spaced, and are evenly distributed.
Preferably, described backlight also comprises visible light source, if described backlight adopts the backlight of straight-down negative structure, capable the and ultraviolet source between-line spacing of visible light source is arranged, or visible light source row and ultraviolet source be listed as and be spaced, and is uniformly distributed.
Preferably, described device also comprises: the control module of ultraviolet source, and for controlling unlatching or the shutoff of ultraviolet source.
Preferably, the viewing area of described display panels comprises a plurality of sub-viewing areas, and described ultraviolet source comprises a plurality of ultraviolet source groups, and described ultraviolet source group is corresponding one by one with described sub-viewing area;
The control module of described ultraviolet source specifically for: according to the sweep time of each sub-viewing area of display panel, control unlatching or the shutoff of described ultraviolet source group corresponding to this sub-viewing area.
Preferably, the control module of described ultraviolet source comprises scanning timer, subregion timer and driving circuit, for each frame display frame:
Scanning timer, be used for carrying out timing the sweep time of display panel line scan signals, and according to timing result, generate the start signal of each ultraviolet source group and this start signal is sent to described driving circuit, and the subregion timer that triggers each ultraviolet source group according to timing result;
Subregion timer, under the triggering at scanning timer, adds up the unlatching duration of current ultraviolet source group, and reaches after Preset Time at this unlatching duration, generates the cut-off signals of this ultraviolet source group and this cut-off signals is sent to described driving circuit;
The start signal that described driving circuit receives for basis drives ultraviolet source group corresponding to this start signal to open, or, according to the cut-off signals receiving, drive the ultraviolet source group that this cut-off signals is corresponding to turn-off.
Preferably, described scanning timer is generating the start signal of each ultraviolet source group and this start signal is being sent to described driving circuit according to timing result, and while triggering the subregion timer of each ultraviolet source group according to timing result, specifically for:
At the end of scan that reaches current display area, during the time, generate the start signal of ultraviolet source group corresponding to current sub-viewing area and this start signal is sent to described driving circuit, and the subregion timer that triggers this ultraviolet source group.
Accompanying drawing explanation
The plan structure schematic diagram of a kind of liquid crystal indicator that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is that the liquid crystal indicator shown in Fig. 1 is along the schematic cross-section of a-a ' direction;
The structural representation of a kind of backlight in the display device that Fig. 3 provides for the embodiment of the present invention;
The structural representation of the another kind of backlight in the display device that Fig. 4 provides for the embodiment of the present invention;
The structural representation of another backlight in the display device that Fig. 5 provides for the embodiment of the present invention;
The structural representation of the display device of the control module that comprises ultraviolet source that Fig. 6 provides for the embodiment of the present invention;
The corresponding relation schematic diagram of the ultraviolet source group that Fig. 7 provides for the embodiment of the present invention and the viewing area of display panel;
In the liquid crystal indicator that Fig. 8 provides for the embodiment of the present invention, the control sequential schematic diagram of each timer in the control circuit of backlight.
Embodiment
The embodiment of the present invention provides a kind of liquid crystal indicator and backlight module, in order to reduce the response time of liquid crystal, improves the response speed of liquid crystal, thereby eliminates motion blur phenomenon.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
First, the liquid crystal that contains strong polar group is introduced.
In current low-voltage liquid crystal, the specific inductive capacity Δ ε of liquid crystal is conventionally larger, contains the composition of stronger polarity in molecular structure, that is to say, contains strong polar group in this one type of liquid crystal.Common have-CN of strong polar group (cyano group) etc., contain the unsaturated links such as two keys, triple bond, conjugatedπbond in these strong polar groups.The liquid crystal that contains strong polar group for this class, its electronics energy level more active, electron transfer/vibration is lower, and the energy of ultraviolet light photons is very strong, for example, for 300nm length ultraviolet light, the energy of each photon is about 6.6 * 10
-19joule, when liquid crystal absorbs after these energy, be easy to Energy Transfer to give whole molecule, accelerate molecular vibration, so, the mobility of liquid crystal molecule increases, and is conducive to reduce the response time of liquid crystal, thereby realizes response fast.
The liquid crystal indicator below embodiment of the present invention being provided describes.
As depicted in figs. 1 and 2, a kind of liquid crystal indicator that the embodiment of the present invention provides, comprises display panels 10 and backlight module 20, and wherein, display panels 10 comprises liquid crystal layer 102, and described liquid crystal layer 102 comprises the liquid crystal that contains strong polar group; The backlight 201 of backlight module 20 comprises ultraviolet source (not shown).
More specifically, as shown in Figure 2, display panels 10 comprises color membrane substrates 101, liquid crystal layer 102 and array base palte 103, wherein, in Fig. 2, it is example that the backlight module 20 of take adopts the back light source structure of side entering type, and this backlight module 20 comprises backlight 201 and optics module 202.Wherein, optics module 202 comprises light guide plate, diffusion sheet etc., and at this, optics module adopts prior art, does not repeat them here.
The above-mentioned liquid crystal indicator that the embodiment of the present invention provides, the liquid crystal that contains strong polar group by employing is as liquid crystal layer, and in backlight, add ultraviolet source, the liquid crystal that utilization contains strong polar group can be accelerated the characteristic of vibration under the irradiation of ultraviolet light, can effectively reduce the response time of this display device liquid crystal, improve the response speed of liquid crystal, thereby eliminate motion blur phenomenon.
Preferably, the bright dipping side of liquid crystal layer is provided with for eliminating the protective film of ultraviolet light.By the bright dipping side at liquid crystal layer, be provided for eliminating the protective film of ultraviolet light, prevent the damage of ultraviolet light light to user.
More specifically, owing to exist eliminating the rete of ultraviolet light in prior art, therefore can directly this rete be adopted plug-in mode to be arranged on the surface of whole display panel 10 bright dipping sides, be arranged on the side away from liquid crystal layer of color membrane substrates 101.Certainly, also protective film can be arranged on to other position of the bright dipping side of liquid crystal layer 102, for example, be arranged between liquid crystal layer 102 and color membrane substrates 101, so, can further reduce the loss of ultraviolet light to color membrane substrates.
The wavelength coverage of the ultraviolet light that preferably, ultraviolet source sends is 300-400nm.The photon energy of the ultraviolet light of this wavelength coverage is low, avoids causing liquid crystal material degradation and decomposition, and glass substrate is low to the absorptivity of the light of this wavelength coverage, can utilize more fully ultraviolet light to improve liquid crystal response speed.
Preferably, backlight also comprises visible light source, if backlight adopts the backlight of side entering type structure, visible light source and described ultraviolet source are spaced, and are evenly distributed.Wherein, visible light source and ultraviolet source are spaced, and comprising: between every adjacent two ultraviolet sources, the quantity of described visible light source is less than or equal to five.For example, between every adjacent two visible light sources, a ultraviolet source is set.It is more that the quantity of ultraviolet source arranges, the problems such as increase of wiring will be caused, the quantity of ultraviolet source arranges very little, undesirable by causing reducing the effect of response time, therefore preferred, between every adjacent two described ultraviolet sources, the quantity of visible light source is more than or equal to two and is less than or equal to five.
Preferably, backlight also comprises visible light source, if backlight adopts the backlight of straight-down negative structure, capable the and ultraviolet source between-line spacing of visible light source is arranged, or visible light source row and ultraviolet source be listed as and be spaced, and is evenly distributed.Wherein, in order to guarantee the luminous quantity of ultraviolet light, reach the object that reduces the response time, the capable quantity of visible light source between every adjacent two row ultraviolet sources are capable is less than or equal to five, or the quantity of the visible light source row between every adjacent two row ultraviolet source row is less than or equal to five.For example, between every adjacent two row visible light sources are capable, a row ultraviolet source is set capable, or row ultraviolet source row are set between every adjacent two row visible light sources.Equally, it is more that the quantity of ultraviolet source arranges, the problems such as increase of wiring will be caused, the quantity of ultraviolet source arranges very little, undesirable by causing reducing the effect of response time, therefore preferred, the capable quantity of visible light source between every adjacent two row ultraviolet sources are capable is less than or equal to five, or the quantity of the visible light source row between every adjacent two row ultraviolet source row is less than or equal to five.
In specific implementation process, visible light source can adopt white light source or three primary light source etc.The distribution of visible light source can adopt prior art, owing to there being space in prior art between visible light source, therefore can ultraviolet source be set the position, space between visible light source, for example the position, space of every two visible light sources arranges a ultraviolet source.So, because ultraviolet source is the position, space between visible light source, and ultraviolet light can be not visible by naked eyes, therefore can not affect the uniformity of light that visible light source integral body is sent.Meanwhile, ultraviolet source is uniformly distributed, and can guarantee the homogeneity of ultraviolet light light to the effect of the liquid crystal of whole display panel.
For the ease of better understanding the present invention, take visible light source below as white light source is example, by reference to the accompanying drawings the distribution of visible light source and ultraviolet source is further described.
In a preferred embodiment, if described backlight adopts LED lamp bar,, in described LED lamp bar, the quantity of white light LEDs is more than or equal to the quantity of ultraviolet leds, and the quantity of the white light LEDs of being separated by between every adjacent two ultraviolet leds is less than or equal to five.For example, in described LED lamp bar, every a white light LEDs (W-LED), be provided with a ultraviolet leds; Or be provided with a ultraviolet leds every two white light LEDs, as shown in Figure 3; Or be provided with a ultraviolet leds every three white light LEDs.
In another preferred embodiment, if backlight adopts the backlight of straight-down negative structure, light source adopts area source, because the space between each white light source in area source is larger, therefore area source can be regarded as to the combination of multiple row lamp bar, specifically in each row lamp bar, the quantity of white light LEDs is more than or equal to the quantity of ultraviolet leds, and, the quantity of the white light LEDs of being separated by between every adjacent two ultraviolet leds is less than or equal to five, for example, as shown in Figure 4, every two white light LEDs (W-LED), be provided with a ultraviolet leds (UV-LED).
In another preferred embodiment, if backlight adopts the backlight of straight-down negative structure, light source adopts area source, because the space between each white light source in area source is larger, therefore ultraviolet source can also be arranged on uniformly to the position, space between each white light source, for example, as shown in Figure 5, four white light LEDs (W-LED) up and down of take are one group, position, space in the middle of every group arranges a ultraviolet leds (UV-LED), that is to say interval two row white light LEDs (W-LED) row between every two row ultraviolet leds (UV-LED) row.
It should be noted that, shown in above preferred embodiment and accompanying drawing, be only for clearer explanation the present invention, but can not be interpreted as restriction the present invention.
Display panels and the backlight of the display device above embodiment of the present invention being provided have been described in detail, and the control module of the ultraviolet source embodiment of the present invention being provided below in conjunction with accompanying drawing describes.
In specific implementation process, as shown in Figure 6, liquid crystal indicator also comprises: the control module 40 of ultraviolet source, this control module 40 is for controlling unlatching or the shutoff of ultraviolet source.
It should be noted that, the visible light source of take in Fig. 6 carries out example as white light source as example, but can not be interpreted as restriction the present invention.
Preferably, the viewing area of display panels comprises a plurality of sub-viewing areas, and described ultraviolet source comprises a plurality of ultraviolet source groups, and described ultraviolet source group is corresponding one by one with described sub-viewing area;
The control module 40 of ultraviolet source specifically for: according to the sweep time of each sub-viewing area of display panel, control unlatching or the shutoff of described ultraviolet source group corresponding to this sub-viewing area.
At this, for the corresponding relation of each sub-viewing area and ultraviolet source group is more clearly described, shown in Figure 7, the viewing area of display panels comprises a plurality of sub-viewing areas, ultraviolet source comprises a plurality of ultraviolet source groups, ultraviolet source group is corresponding one by one with sub-viewing area, the quantity that is the sub-viewing area that comprises, the viewing area of display panels is consistent with the quantity of ultraviolet source group, and the corresponding sub-viewing area of a ultraviolet source group, the first ultraviolet source group is corresponding with the first sub-viewing area, the second ultraviolet source group is corresponding with the second sub-viewing area, the 3rd ultraviolet source group is corresponding with the 3rd sub-viewing area, the 4th ultraviolet source group is corresponding with the 4th sub-viewing area, .
Further, continue referring to Fig. 6, the control module 40 of ultraviolet source comprises scanning timer 400, subregion timer 401 and driving circuit 402, wherein:
For each frame display frame:
Scanning timer 400, be used for carrying out timing the sweep time of display panel line scan signals, and according to timing result, generate the start signal of each ultraviolet source group and this start signal is sent to described driving circuit, and the subregion timer 401 that triggers each ultraviolet source group according to timing result;
Concrete, the line scan signals of display panel is that from the line scanning start signal of line scan signals, start scanning from the first row the sweep time of each two field picture for controlling the upset of the liquid crystal of display panel, to last column end of scan, complete the demonstration of a two field picture.When line scan signals scans certain a line, the liquid crystal that this row is corresponding overturns starting.In the situation that display panel is divided into the individual viewing area of many sons in advance, determine the sweep time of each sub-viewing area, node sweep time of each sub-viewing area is also determined, therefore, when scanning timer timing is during to node sometime, the scanning of a upper sub-viewing area completes, and will start the scanning of current sub-viewing area, and the liquid crystal that current display area is corresponding will begin turning according to scanning sequency.Because liquid crystal exists the response time, therefore, when finish the sweep time of current sub-viewing area, liquid crystal corresponding to current sub-viewing area also do not finish response.Therefore, arbitrary moment within the sweep time of current sub-viewing area (comprising that the scanning zero hour of current sub-viewing area and the end of scan of current sub-viewing area are constantly), generate the start signal of ultraviolet source group corresponding to current sub-viewing area, to accelerate the upset of liquid crystal corresponding to current sub-viewing area, thereby improve response speed.
Subregion timer 401, under the triggering at scanning timer 400, add up the unlatching duration of current ultraviolet source group, and reach after Preset Time at this unlatching duration, generate the cut-off signals of this ultraviolet source group and this cut-off signals is sent to described driving circuit;
Concrete, the Preset Time of subregion timer 401 is to determine according to the response time of the liquid crystal that contains strong polar group, for example, the response time of the liquid crystal that contains strong polar group is 6ms, therefore, when the unlatching duration of ultraviolet source group is 6ms, liquid crystal has responded end, therefore this ultraviolet source group can be closed.Certainly, due to a ultraviolet source group corresponding be the liquid crystal of a sub-viewing area, therefore, the response time that adds liquid crystal sweep time that the longest default duration of the subregion timer of each ultraviolet source group can be this sub-viewing area, the shortest default duration can be the response time of liquid crystal.
The start signal that described driving circuit receives for basis drives ultraviolet source group corresponding to this start signal to open, or, according to the cut-off signals receiving, drive the ultraviolet source group that this cut-off signals is corresponding to turn-off.Wherein, driving circuit is constant-current drive circuit, and this constant-current drive circuit can be opened or turn-off corresponding LED under the control of control circuit.
By scanning timer and subregion timer are set, according to the timing result of scanning timer, generate the start signal of ultraviolet source group and this start signal is sent to described driving circuit, to drive corresponding ultraviolet source group to open, thereby make the liquid crystal in rollover states under the irradiation of ultraviolet light, improve response speed; Meanwhile, according to the response time of the liquid crystal that contains strong polar group, set the Preset Time of subregion timer, can after liquid crystal response finishes, close timely ultraviolet source group, thereby further reduce the loss of ultraviolet light to liquid crystal display device.
Preferably, described scanning timer is generating the start signal of each ultraviolet source group and this start signal is being sent to described driving circuit according to timing result, and while triggering the subregion timer of each ultraviolet source group according to timing result, specifically for:
At the end of scan that reaches current sub-viewing area, during the time, generate the start signal of ultraviolet source group corresponding to current sub-viewing area and this start signal is sent to described driving circuit, and the subregion timer that triggers this ultraviolet source group.
When finish the sweep time of current sub-viewing area, liquid crystal corresponding to current sub-viewing area do not finish response.Therefore, at the end of scan that reaches current sub-viewing area during the time, generate the start signal of ultraviolet source group corresponding to current sub-viewing area, with respect to just open the scheme of corresponding ultraviolet source group the zero hour in this sub-viewing area scanning, can realize under the prerequisite that reduces the liquid crystal response time, reduce the opening time of ultraviolet source group, further to reduce the loss of ultraviolet light to liquid crystal display device.
It should be noted that, although the setting of ultraviolet source group depends on the setting to the sub-viewing area of display panel, but in specific implementation process, the division of antithetical phrase viewing area does not limit, for example, the viewing area of whole display panel is divided into two sub-viewing areas, although the liquid crystal of the sub-viewing area of scanning has responded end at first, on the whole still by having improved the response speed of the liquid crystal of whole display panel adding of ultraviolet light.Certainly, if the sub-viewing area quantity of dividing is too much, the quantity of ultraviolet source group also can be more, so, will increase the setting of the control circuit of ultraviolet source, and the impact on whole display brightness, accordingly, in a preferred embodiment, the quantity of sub-viewing area mostly is 6 most.
For example, the 60Hz refreshing frequency line scanning mode of take is example, be 16.7ms the sweep time of each frame picture, if the viewing area of display panel is divided into four sub-viewing areas, corresponding ultraviolet source is divided into four ultraviolet source groups, be 16.7/4=4.2ms the sweep time of each sub-viewing area, and take the liquid crystal that contains strong polar group response time as 6ms be example, when finish the sweep time of the first sub-viewing area, namely when 4.2ms, the ultraviolet source group that the first sub-viewing area is corresponding is opened, and by subregion timer, this ultraviolet source group is carried out to timing, now, the also not upset end of liquid crystal corresponding to the first scan line of the first sub-viewing area, and liquid crystal corresponding to last scan line of the first sub-viewing area just begun turning, so, can accelerate the upset of all liquid crystal corresponding to this sub-viewing area, simultaneously, because the Preset Time of subregion timer is to determine according to the response time of the liquid crystal that contains strong polar group, therefore, when subregion timer reaches 6ms, the liquid crystal corresponding to the first scan line of the first sub-viewing area has been turned to both allocations, also reached the response time flip-flop transition of the liquid crystal that last column sweep trace is corresponding, all liquid crystal corresponding to this region have all completed upset at the moment, now this group ultraviolet source group are turn-offed.So, with respect to the scheme of just opening corresponding ultraviolet source group in starting in this sub-viewing area scanning, can, realizing under the prerequisite that reduces the liquid crystal response time, reduce the opening time of ultraviolet source group, further to reduce the loss of ultraviolet light to liquid crystal display device.
Preferably, the core devices of controlling module is single-chip microcomputer or digital signal processor (Digital Signal Processor, DSP) etc., can receive the line scanning start signal of controlling display panel.The setting of scanning timer and subregion timer just can realize by digital processing chip, wherein, scanning timer can generate according to timing result the start signal of different ultraviolet source groups in the different moment, and, subregion timer can carry out timing and generate corresponding cut-off signals in the corresponding stage, start signal or cut-off signals can be 8 or 10 s' binary digital signal, in the register of this binary digit by SPI or IIC control protocol write driver circuit, realize the driving of LED is controlled; Or start signal and cut-off signals are realized by high/low level signal, for example, start signal is high level signal, and cut-off signals is low level signal; Or start signal is low level signal, cut-off signals is high level signal.
Below, the driving process of the backlight of the liquid crystal indicator further embodiment of the present invention being provided in conjunction with sequential chart describes.It should be noted that, the visible light source in backlight is what continue to open in the displaying time of display panel, therefore, below explanation for be the driving process of the ultraviolet source in backlight.
Below, take that the viewing area of display panel is divided into four sub-viewing areas is example, the embodiment of the present invention is described.If the refreshing frequency of display panel is 60Hz, be 16.7ms the sweep time of a frame picture, if the viewing area of display panel is divided into 4 sub-viewing areas (the first sub-viewing area, the second sub-viewing area, the 3rd sub-viewing area and the 4th sub-viewing area), be 16.7/4=4.2ms the sweep time of every sub-viewing area; And the response time of the liquid crystal that contains strong polar group adopting in the embodiment of the present invention is 6ms.
On control circuit, arrange:
Scanning timer T, for to carrying out timing the sweep time of display panel line scan signals;
The first subregion timer T1, for carrying out timing to the unlatching duration of the first ultraviolet leds group;
The second subregion timer T2, for carrying out timing to the unlatching duration of the second ultraviolet leds group;
The 3rd subregion timer T3, for carrying out timing to the unlatching duration of the 3rd ultraviolet leds group;
The 4th subregion timer T4, for carrying out timing to the unlatching duration of the 4th ultraviolet leds group;
The work schedule of each timer shown in Figure 8, for a frame display frame, the driving process of ultraviolet source group is as follows:
When T is 0ms, start the scanning of panel row sweep signal.When T timing is during to 4.2ms, the scanning of the first sub-viewing area completes, start the scanning of the second sub-viewing area, now scanning timer T generates the start signal of the first ultraviolet leds group and this start signal is sent to driving circuit, driving circuit, under the driving of this start signal, is opened the ultraviolet light of the first ultraviolet leds group; Trigger the first subregion timer T1 simultaneously and start timing, when T1 timing is during to 6ms, the first liquid crystal response corresponding to sub-viewing area completes, the first subregion timer T1 generates the cut-off signals of the first ultraviolet leds group and this cut-off signals is sent to driving circuit, driving circuit turn-offs the ultraviolet light of the first ultraviolet leds under the driving of this cut-off signals, the first subregion timer T1 zero clearing simultaneously;
When T timing is during to 8.3ms, the second sub-viewing area has been scanned, start the scanning of the 3rd sub-viewing area, now scanning timer T generates the start signal of the second ultraviolet leds group and this start signal is sent to driving circuit, driving circuit, under the driving of this start signal, is opened the ultraviolet light of the second ultraviolet leds group; Trigger the second subregion timer T2 simultaneously and start timing, when T2 timing is during to 6ms, the second liquid crystal response corresponding to sub-viewing area completes, the second subregion timer T2 generates the cut-off signals of the second ultraviolet leds group and this cut-off signals is sent to driving circuit, driving circuit turn-offs the ultraviolet light of the second ultraviolet leds under the driving of this cut-off signals, the second subregion timer T2 zero clearing simultaneously;
When T timing is during to 12.5ms, the 3rd sub-viewing area has been scanned, start the scanning of the 4th sub-viewing area, now scanning timer T generates the start signal of the 3rd ultraviolet leds group and this start signal is sent to driving circuit, driving circuit, under the driving of this start signal, is opened the ultraviolet light of the 3rd ultraviolet leds group; Trigger the 3rd subregion timer T3 simultaneously and start timing, when T3 timing is during to 6ms, the 3rd liquid crystal response corresponding to sub-viewing area completes, the 3rd subregion timer T3 generates the cut-off signals of the 3rd ultraviolet leds group and this cut-off signals is sent to driving circuit, driving circuit turn-offs the ultraviolet light of the 3rd ultraviolet leds under the driving of this cut-off signals, the 3rd subregion timer T3 zero clearing simultaneously;
When T timing is during to 16.7ms, the 4th sub-viewing area has been scanned, the scanning of the first sub-viewing area will be started, now scanning timer T generates the start signal of the 4th ultraviolet leds group and this start signal is sent to driving circuit, driving circuit, under the driving of this start signal, is opened the ultraviolet light of the 4th ultraviolet leds group; Trigger the 4th subregion timer T4 simultaneously and start timing, when T4 timing is during to 6ms, the 4th liquid crystal response corresponding to sub-viewing area completes, the 4th subregion timer T4 generates the cut-off signals of the 4th ultraviolet leds group and this cut-off signals is sent to driving circuit, driving circuit turn-offs the ultraviolet light of the 4th ultraviolet leds under the driving of this cut-off signals, the 4th subregion timer T4 zero clearing simultaneously;
So far, a frame picture has scanned, and repeats afterwards above sequential and can realize the response speed that improves liquid crystal in the procedure for displaying of complete video or image.
It should be noted that, sequential chart is as shown in Figure 8 known, and the first subregion timer T1 and the 3rd subregion timer T2 do not occur simultaneously on time shaft, and therefore, the first subregion timer T1 and the 3rd subregion timer T3 can adopt same subregion timer; The second subregion timer T2 and the 4th subregion timer T4 do not occur simultaneously on time shaft, and therefore, the second subregion timer T2 and the 4th subregion timer T4 can adopt same subregion timer; So, if when the viewing area of display panel is divided into four sub-viewing areas, control circuit need to arrange 3 timers altogether, thereby has reduced the setting of timer, has further saved resource.
In sum, the liquid crystal indicator that the embodiment of the present invention provides, the liquid crystal that contains strong polar group by employing is as liquid crystal layer, and in backlight, add ultraviolet source, the liquid crystal that utilization contains strong polar group can be accelerated the characteristic of vibration under the irradiation of ultraviolet light, can effectively reduce the response time of this display device liquid crystal, improve the response speed of liquid crystal, thereby eliminate motion blur phenomenon.Meanwhile, by the bright dipping side at liquid crystal layer, be provided for eliminating the protective film of ultraviolet light, can prevent the damage of ultraviolet light light to user.Further, by controlling the unlatching duration of ultraviolet source group, at liquid crystal corresponding to ultraviolet source group, open during in rollover states, after finishing, liquid crystal upset turn-offs in time, effectively reduce the unlatching duration of ultraviolet source, thereby further reduced ultraviolet light to user's damage and the loss to liquid crystal display device.
The present invention is with reference to describing according to process flow diagram and/or the block scheme of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be in computer program instructions realization flow figure and/or block scheme each flow process and/or the flow process in square frame and process flow diagram and/or block scheme and/or the combination of square frame.Can provide these computer program instructions to the processor of multi-purpose computer, special purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction of carrying out by the processor of computing machine or other programmable data processing device is produced for realizing the device in the function of flow process of process flow diagram or a plurality of flow process and/or square frame of block scheme or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of appointment in flow process of process flow diagram or a plurality of flow process and/or square frame of block scheme or a plurality of square frame.
These computer program instructions also can be loaded in computing machine or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computing machine or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of appointment in flow process of process flow diagram or a plurality of flow process and/or square frame of block scheme or a plurality of square frame on computing machine or other programmable devices.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (10)
1. a liquid crystal indicator, comprises display panels and backlight module, it is characterized in that,
Described display panels comprises liquid crystal layer, and described liquid crystal layer comprises the liquid crystal that contains strong polar group;
Backlight in described backlight module comprises ultraviolet source.
2. device according to claim 1, is characterized in that, the bright dipping side of described liquid crystal layer is provided with for eliminating the protective film of ultraviolet light.
3. device according to claim 2; it is characterized in that; described display panels also comprises the color membrane substrates that is arranged on described liquid crystal layer one side; described protective film is arranged between described liquid crystal layer and described color membrane substrates, or is arranged on the side away from described liquid crystal layer of described color membrane substrates.
4. device according to claim 1, is characterized in that, the wavelength coverage of the ultraviolet light that described ultraviolet source sends is 300-400nm.
5. device according to claim 1, is characterized in that, described backlight also comprises visible light source, if described backlight adopts the backlight of side entering type structure, described visible light source and described ultraviolet source are spaced, and are uniformly distributed.
6. device according to claim 1, it is characterized in that, described backlight also comprises visible light source, if described backlight adopts the backlight of straight-down negative structure, described visible light source and described ultraviolet source adopt between-line spacing to arrange, or visible light source and ultraviolet source adopt row to be spaced, and be uniformly distributed.
7. according to the device described in the arbitrary claim of claim 1-6, it is characterized in that, described device also comprises: the control module of ultraviolet source, and for controlling unlatching or the shutoff of described ultraviolet source.
8. according to the device described in the arbitrary claim of claim 7, it is characterized in that, the viewing area of described display panels comprises a plurality of sub-viewing areas, and described ultraviolet source comprises a plurality of ultraviolet source groups, and described ultraviolet source group is corresponding one by one with described sub-viewing area;
The control module of described ultraviolet source specifically for: according to the sweep time of each sub-viewing area of display panel, control unlatching or the shutoff of described ultraviolet source group corresponding to this sub-viewing area.
9. device according to claim 8, is characterized in that, the control module of described ultraviolet source comprises scanning timer, subregion timer and driving circuit, wherein:
For each frame display frame:
Described scanning timer, be used for carrying out timing the sweep time of the line scan signals of display panel, and according to timing result, generate the start signal of each ultraviolet source group and this start signal is sent to described driving circuit, and the subregion timer that triggers each ultraviolet source group according to timing result;
Described subregion timer, for under the triggering of described scanning timer, add up the unlatching duration of current ultraviolet source group, and reach after Preset Time at this unlatching duration, generate the cut-off signals of this ultraviolet source group and this cut-off signals is sent to described driving circuit;
Described driving circuit, for drive ultraviolet source group corresponding to this start signal to open according to the start signal receiving, or, according to the cut-off signals receiving, drive the ultraviolet source group that this cut-off signals is corresponding to turn-off.
10. device according to claim 9, it is characterized in that, described scanning timer is generating the start signal of each ultraviolet source group and this start signal is being sent to described driving circuit according to timing result, and while triggering the subregion timer of each ultraviolet source group according to timing result, specifically for:
At the end of scan that reaches current sub-viewing area, during the time, generate the start signal of ultraviolet source group corresponding to current sub-viewing area and this start signal is sent to described driving circuit, and the subregion timer that triggers this ultraviolet source group.
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| CN201410367774.8A CN104155801A (en) | 2014-07-29 | 2014-07-29 | Liquid crystal display device |
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| CN201410367774.8A CN104155801A (en) | 2014-07-29 | 2014-07-29 | Liquid crystal display device |
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