CN105096892A - Image display method and liquid crystal display device - Google Patents
Image display method and liquid crystal display device Download PDFInfo
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- CN105096892A CN105096892A CN201510556902.8A CN201510556902A CN105096892A CN 105096892 A CN105096892 A CN 105096892A CN 201510556902 A CN201510556902 A CN 201510556902A CN 105096892 A CN105096892 A CN 105096892A
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Abstract
The embodiment of the invention provides a liquid crystal display device. The device comprises an image processor, a time schedule controller and a display panel. The image processor is used for receiving an input image and scaling the input image to generate a to-be-displayed image. The resolution of the to-be-display image in the row direction is the same with the resolution of a liquid crystal panel in the row direction. The resolution of the to-be-display image in the column direction is one half the resolution of the liquid crystal panel in the column direction. The time schedule controller is used for receiving a vertical initial signal, and then outputting two vertical clock pulse signals to a gate driver under the pulse action of the vertical initial signal. The liquid crystal panel is used for receiving the vertical initial signal and the vertical clock signals and then displaying the to-be-displayed image. According to the technical scheme of the invention, the refreshing frequency of the liquid crystal panel is increased. At the same time, original image pixels are not influenced at all.
Description
Technical field
The present invention relates to image display technology field, particularly relate to a kind of method for displaying image and liquid crystal indicator.
Background technology
Liquid crystal indicator needs the picture refreshing display with certain frequency in the process of display image, along with the progress of display technique, the requirement of public on images is also more and more higher, when there is larger difference between consecutive frame, display terminal many employings motion compensation technique, carries out the process of interleave to reduce the shake of image.But of the prior art receive the pending image with display panel with equal resolution after, the mode refreshed line by line is adopted to carry out the display of image, refreshing frequency is subject to the restriction of liquid crystal molecule response speed, and refreshing frequency is lower, cannot meet the demand of dynamic compensation technology.For the panel of 4K2K60HZ, due to the restriction of liquid crystal molecule response speed, this panel receives the pending image of 4K2K, and refresh line by line with the frequency of 60HZ, refreshing frequency is low, makes the limited amount of interleave, still can not meet the demand that moving image compensates.
Summary of the invention
Of the present inventionly provide a kind of method for displaying image and liquid crystal indicator, to walk abreast the display panel refreshed with duplicate rows by adopting, and improve image procossing mode, improve the refreshing frequency of liquid crystal indicator, simultaneously less image impairment.
The invention provides a kind of liquid crystal indicator, comprise liquid crystal panel, liquid crystal panel comprises gate drivers and source electrode driver, also comprise: image processor, for receiving input picture, and convergent-divergent is carried out to generate image to be displayed to input picture, the resolution of the line direction of image to be displayed is identical with the resolution of liquid crystal panel line direction, and the resolution of the column direction of image to be displayed is the half of the resolution of liquid crystal panel column direction; Time schedule controller, for exporting vertical start signal to gate drivers, and exports two vertical clock pulses to gate drivers under the pulse of vertical start signal; Liquid crystal panel, for the vertical start signal that receives according to gate drivers and vertical clock pulse, and the image to be displayed that source plate driver receives carries out image display.
Present invention also offers a kind of method for displaying image, be applied to liquid crystal indicator, comprise: image processor receives input picture, and convergent-divergent is carried out to generate image to be displayed to input picture, the resolution of the line direction of image to be displayed is identical with the resolution of liquid crystal panel line direction, and the resolution of the column direction of image to be displayed is the half of the resolution of liquid crystal panel column direction; Time schedule controller exports vertical start signal to the gate drivers of liquid crystal panel, and exports two vertical clock pulses to gate drivers under the pulse of vertical start signal; The vertical start signal that liquid crystal panel receives according to gate drivers and vertical clock pulse, and the image to be displayed that source electrode driver receives carries out image display.
The liquid crystal indicator that the application provides comprises image processor, time schedule controller, is provided with the liquid crystal panel of gate drivers and source electrode driver.Wherein, image processor, for receiving input picture, and convergent-divergent is carried out to generate image to be displayed to input picture, the resolution of the line direction of image to be displayed is identical with the resolution of liquid crystal panel line direction, and the resolution of the column direction of image to be displayed is the half of the resolution of liquid crystal panel column direction; Time schedule controller, for exporting vertical start signal to gate drivers, and exports two vertical clock pulses to gate drivers under the pulse of vertical start signal.Because the vertical clock signal of first under the pulse of vertical start signal can control the first row thin film transistor (TFT) conducting of liquid crystal panel, the duration of conducting is consistent with the pulse duration of vertical start signal signal.When second vertical clock pulse signal starts, second row thin film transistor (TFT) starts conducting, the duration of conducting is also consistent with the pulse duration of vertical start signal signal, simultaneously due under a vertical start signal pulse, be provided with the output of two vertical clock pulse pulse signals, therefore there is duration simultaneously switched in the first row thin film transistor (TFT) and the second row thin film transistor (TFT), because the first row thin film transistor (TFT) and the second row thin film transistor (TFT) can be switched on simultaneously, therefore the duration that liquid crystal panel refreshes whole film transistor row used decreases half, and then make the refreshing frequency of liquid crystal panel improve one times, be conducive to carrying out moving image compensation.Simultaneously due to half that the resolution of image to be displayed column direction is the resolution of liquid crystal panel column direction, so image can be carried out complete display, because the vertical start signal signal of time schedule controller and vertical clock pulse signal make the refreshing frequency of liquid crystal panel be doubled, therefore within the identical time, prior art only shows piece image, and the scheme of the application can show two two field pictures.Simultaneously due to the half that the resolution of image to be displayed column direction is the resolution of liquid crystal panel column direction, so liquid crystal panel can present the total data of input picture in identical displaying time, there is better display effect.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of liquid crystal indicator in the embodiment of the present invention;
Fig. 2 is the configuration diagram of liquid crystal panel in the embodiment of the present invention;
Fig. 3 is the configuration diagram of thin film transistor (TFT) in the embodiment of the present invention;
Fig. 4 is driver' s timing figure of the prior art;
Fig. 5 is a kind of driver' s timing figure in the embodiment of the present invention;
Fig. 6 is another driver' s timing figure in the embodiment of the present invention.
Fig. 7 is the method flow diagram in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In describing the invention, it will be appreciated that, orientation or the position relationship of the instruction such as term " level ", " line direction ", " column direction " are based on method shown in the drawings or position relationship, only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as limitation of the present invention.Term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or implicit indicate or implicit comprise one or more these technical characteristics.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, except as otherwise noted, the implication of " multiple " is two or more.
As shown in Figure 1, present embodiments provide a kind of liquid crystal indicator 101 and comprise image processor 102, time schedule controller 103, liquid crystal panel 104.
Image processor 102 is for receiving input picture, and convergent-divergent is carried out to generate image to be displayed to input picture, the resolution of the line direction of image to be displayed is identical with the resolution of liquid crystal panel line direction, and the resolution of the column direction of image to be displayed is the half of the resolution of liquid crystal panel column direction.In the present embodiment, the resolution of liquid crystal panel can be 4K2K, and its refreshing frequency can be 60HZ.Certainly, those skilled in the art also can adopt other setting.
Specifically, image processor receives the image of input, change by image resolution input picture being converted to line direction identical with the resolution of liquid crystal panel line direction, the resolution of column direction is the image to be displayed of the half of the resolution of liquid crystal panel column direction.For example, if the resolution of real panel is 4K2K, then the resolution of the image to be displayed after convergent-divergent is 4K1K.The mode of image conversion, can adopt any one technology in existing image scaling.
Be scaled the half of liquid crystal panel column direction resolution by the resolution of the column direction by image in convergent-divergent process, image is made to export the scheme that better can coordinate follow-up duplicate rows Concurrent Display, all picture materials of original image can be presented, compared to only exporting odd-line pixels image or only exporting even rows image, the mode provided in the present embodiment can present better technique effect.
Time schedule controller 103 for, for exporting vertical start signal to the gate drivers of liquid crystal panel, and export two vertical pulses all the time to gate drivers under vertical start signal.
Concretely, time schedule controller (TimeController, be called for short Tcon), for generating control signal, (latchsignalforsourcedriver is latched as provided the source electrode driver of needs for source electrode driver, be called for short TP) signal and export the enable control (polarityinversionsignalforsorcedriver of data, be called for short POL) signal, wherein, TP controls latch and the output of each row data message, such as, during TP signal high level, controlling data line is latched in line storage, during low level, release data line, liquid crystal capacitance is charged, POL is for controlling liquid crystal molecular polarity inversion, for gate drivers provides the vertical clock signal (ClockPulseVertical of needs, be called for short CPV) signal, vertical start signal (StartVertical, be called for short STV) signal, turntable driving output enable (scandriveroutputenable, be called for short OE) signal etc., vertical start signal (StartVertical, be called for short STV) start the new scanning of a frame for controlling liquid crystal panel, vertical clock signal (ClockPulseVertical, be called for short CPV) for controlling the every a line thin film transistor (TFT) of liquid crystal panel (ThinFilmTransistor, be called for short TFT) conducting, vertical signal is all the time known as shift signal again, at the rising edge of a vertical signal all the time, gate drivers meeting conducting next line thin film transistor (TFT) (ThinFilmTransistor, be called for short TFT).
Further, liquid crystal panel 104 comprises gate drivers 1041, source electrode driver 1042, thin film transistor (TFT) 1043, liquid crystal molecule.Time schedule controller exports vertical start signal, vertical clock signal to liquid crystal panel, is specially, and time schedule controller exports STV signal and CPV signal to the gate drivers of liquid crystal panel, and keeps the output of two CPV pulses under a STV pulse.First vertical clock signal under the pulse of vertical start signal can control the first row TFT conducting of liquid crystal panel, and the duration of conducting is consistent with the pulse duration of STV signal.When second CPV signal starts, second row TFT starts conducting, the duration of conducting is also consistent with the pulse duration of STV signal, simultaneously due under a STV pulse, be provided with the output of two CPV pulse signals, therefore there is duration simultaneously switched in the first row TFT and the second row TFT, and the duration that this section is switched on simultaneously is used to the input of image, therefore achieves duplicate rows Concurrent Display.
Because the first row TFT and the second row TFT can be switched on simultaneously, therefore liquid crystal panel refreshes the capable duration used of whole TFT and decreases half, and then makes the refreshing frequency of liquid crystal panel improve one times.
Further, sequence drivers 103 also exports TP signal, to control the write of image to be displayed to the source electrode driver of liquid crystal panel.Concretely, it is the source electrode driver output TP signal to liquid crystal panel, the pulse of TP signal and 2i impulsive synchronization of CPV signal, as shown in Figure 5, before the rising edge of TP signal can start from 2i pulse of CPV signal, realize the latch of image to be displayed at source electrode driver, after the negative edge of TP signal can start from 2i pulse of CPV signal, for control source electrode driver to while the capable TFT of conducting 2i-1 and the capable TFT of 2i in write image to be displayed.
Further, time schedule controller also exports OE signal to liquid crystal panel, the pulse of the present embodiment using high level as OE signal, the pulse of OE signal and 2i-1 impulsive synchronization of CPV signal, to make when 2i-1 pulse of CPV signal, gate drivers can not export high level as tft array, and TFT can not conducting, reduces the possibility that crosstalk produces.Concretely, above-mentionedly synchronously to refer to: the rising edge of the pulse of OE signal is identical with the rising edge of 2i-1 pulse of CPV signal, or, early than the rising edge of 2i-1 pulse of CPV signal; The negative edge of the pulse of OE signal is identical with the negative edge of 2i-1 pulse of CPV signal, or, be later than the negative edge of 2i-1 pulse of CPV signal and be not later than the rising edge of 2i pulse of CPV signal.This makes the capable thin film transistor (TFT) of 2i-1 and the capable thin film transistor (TFT) of 2i, only there is the time of common conducting, and in the time of non-common conducting, the capable thin film transistor (TFT) of 2i-1 and the capable thin film transistor (TFT) of 2i all can not conductings, decrease the possibility that crosstalk produces.
Liquid crystal panel 104, comprises gate drivers 1041 and source electrode driver 1042, the vertical start signal received for gate drivers and vertical signal all the time, and the image to be displayed that source electrode driver receives shows.
Concretely, liquid crystal panel comprises gate drivers 1041, source electrode driver 1042, thin film transistor (TFT) 1043, also comprises liquid crystal molecule.Gate drivers, the STV signal received for basis and CPV signal, corresponding thin film transistor (TFT) in conducting membrane transistor array; Source electrode driver, for the image to be displayed that basis receives, view data is write in the thin film transistor (TFT) of conducting, thin film transistor (TFT) stores corresponding electric charge according to the view data of write in memory capacitance, the voltage that electric charge in stored charge is formed can maintain the rotation of liquid crystal molecule, thus completes the display of image to be displayed.
Because the STV signal of time schedule controller and CPV signal make the refreshing frequency of liquid crystal panel be doubled, therefore within the identical time, prior art only shows piece image, but the refreshing frequency of image is lower.This programme passes through the control of CPV signal and STV signal, make when the restriction of liquid crystal molecule response speed, the refreshing frequency of liquid crystal panel is doubled, be conducive to carrying out moving image compensation, make existing input picture to show completely simultaneously, do not carry out cutting of image pixel.
In the present embodiment, the framework of liquid crystal panel as shown in Figure 2, comprise gate drivers, source electrode driver, thin film transistor (TFT) (ThinFilmTransistor, be called for short TFT) array, the raster data model line arranged in the row direction and the source drive line arranged along column direction, each thin film transistor (TFT) all with by the raster data model line at its position place and source drive line is connected, namely, each raster data model line drives a line TFT, and each source drive line is that a row TFT carries out data write.Particularly, the structural representation of each TFT can as shown in Figure 3, and the electric capacity in TFT is used for stored charge, and the liquid crystal molecule of the electric charge liquid crystal panel of storage produces the rotation of respective degrees, to carry out the display of image.In the present embodiment, if when raster data model line has high level signal to input, source drive line could carry out charge or discharge in electric capacity, if when raster data model line is low level signal input, electric capacity will keep electric charge constant, thus make liquid crystal molecule keep corresponding rotation status.
In existing lining by line scan, as shown in Figure 4, when a frame picture starts to transmit, time schedule controller sends a pulse of STV signal to gate drivers, and under the pulse of STV signal, export the pulse of a CPV signal, after gate drivers receives the pulse of STV signal, namely when first CPV signal high level arrives, to the thin film transistor (TFT) (ThinFilmTransistor of liquid crystal panel the first row, be called for short TFT) export a high level signal G1, control the TFT conducting of the first row, thus the memory capacitance of source electrode driver to each pixel of the first row is charged, to show the pixel content of the first row, after charging terminates, electric charge in TFT can keep, until the scanning of next frame arrives, wherein the duration that continues of the high level of G1 is identical with the pulse duration of STV signal.When second CPV signal high level arrives, gate drivers exports a high level signal G2 to the TFT of liquid crystal panel second row, controls the TFT conducting of the second row.Due to the pulse signal of one-period during CPV signal, so when only having a CPV pulse under a STV signal pulse, gate drivers is maximum conducting a line TFT at any time, in prior art, when second pulse signal of CPV signal starts, the G1 that the TFT of the first row exports becomes low level, turn off the TFT of the first row, thus the memory capacitance of source electrode driver to each pixel of the second row is charged, to show the pixel content of the second row, the like, line by line the memory capacitance of each row of liquid crystal panel is charged.
As shown in Figure 5, time schedule controller in the present embodiment is before every frame picture display, first signal of STV is sent to gate drivers, and there are two continuous print pulses in the CPV signal that the moment of corresponding above-mentioned STV signal pulse sends to gate drivers, further, time schedule controller sends TP signal to source electrode driver, and the latch of above-mentioned TP signal latches the process that release edge is arranged in 2i CPV signal before triggering and starting along 2i the pulse starting from CPV signal.
For TFT, in the pulse of each STV signal, all there is the output of the pulse of two CPV signals in time schedule controller, therefore can open two row TFT under STV signal pulse signal simultaneously.TFT opens the rising edge starting from a CPV signal pulse, and is displaced to next line at the rising edge of next CPV signal pulse and carries out high level output.But for this case, under the pulse of a vertical start signal STV, there is the pulse of two CPV signals to export, therefore for the first row TFT, at t
1in the moment, by first pulsing effect of CPV signal, TFT can open, its duration (t opened
1-t
3moment) consistent with the duration that STV signal pulse continues, therefore cross over second pulse of CPV signal, when second pulse of CPV signal starts, i.e. t
2in the moment, the second row TFT starts to open, and makes the first row TFT and the second row TFT there is the time period (t simultaneously opened
2-t
3moment), may be used for the input carrying out image.
Particularly, when time schedule controller sends the pulse of a STV signal to gate drivers, after gate drivers receives the pulse of STV signal, (the t when first high level of CPV signal arrives
1moment), to the thin film transistor (TFT) (ThinFilmTransistor of liquid crystal panel the first row, be called for short TFT) export a high level signal G1, control the TFT conducting of the first row, because source electrode does not have data to write this moment, the TFT of the first row does not receive image, and the conducting duration of the first row TFT is identical with the duration of the pulse of STV signal, (the t when second high level of CPV signal arrives
2moment), gate drivers exports a high level to the TFT of the second row, control the conducting of the TFT of the second row, the first row TFT is now made to keep conducting state, before the rising edge of first pulse of the TP signal exported to source electrode driver by time schedule controller is positioned at second pulse of CPV signal, therefore before second pulse of CPV signal, source electrode driver latched the voltage corresponding to the first row pixel in input picture, because the negative edge of first pulse of TP signal is in the 2nd CPV signal process, therefore, when second CPV signal, voltage corresponding to the first row pixel in the view data of latch can be exported each tft array by source electrode driver, because now the first row TFT and the second row TFT is in conducting state, therefore be on same column direction, the first row TFT is identical with the image that the second row TFT receives, for example, as shown in Figure 2, the image that a with b receives is identical, the image that c with d receives is identical, identical electric charge is stored in electric capacity due to the TFT of the adjacent rows on same column direction, so the deflection state of corresponding liquid crystal molecule is also identical, identical picture material can be shown, (the t when the 3rd pulse of individual CPV signal starts
3moment), gate drivers exports a high level to the third line TFT, control the conducting of the 3rd TFT, meanwhile, the second row TFT still can receive the high level signal of continuation, keep conducting state, now, the conducting duration of the first row TFT terminates, and what receive is a low level signal, the first row TFT is in off state, when now the electric charge of storage can be retained to next frame scanning in the first row TFT.Due to when the 3rd pulse of CPV signal, source electrode no-voltage writes, so the quantity of electric charge of the second row TFT and the third line TFT remains unchanged; (the t when the 4th pulse of CPV signal starts
4moment), gate drivers exports a high level to fourth line TFT, it is fourth line TFT conducting, meanwhile, the third line TFT still can receive the high level signal of continuation, keeps conducting state, the conducting duration of the second row TFT accepts, what receive is a low level signal, and the second row TFT is in off state, when now the electric charge of storage can be retained to next frame scanning in the second row TFT.Before the rising edge of second pulse of the TP signal that time schedule controller exports to source electrode driver is positioned at the 4th pulse of CPV signal, therefore before the 4th pulse of CPV signal, source electrode driver latched the second row pixel in input picture, because second pulse falling edge of TP signal is in the process of the 4th pulse of CPV signal, therefore, when the 4th pulse of CPV signal, voltage corresponding to the second row pixel in the image to be displayed of latch can be exported each tft array by source electrode driver, because now the third line TFT and fourth line TFT is in conducting state, therefore be on same column direction, the image that the third line TFT and fourth line TFT receive is identical.The like.Realize the duplicate rows parallel output of image.
Further, image processor can insert and compensate image between the image to be displayed that two frames are adjacent, because the signal of time schedule controller controls, the refreshing frequency of display panel is doubled, insert in two adjacent frame images to be displayed in time and compensate image, original image to be displayed still can normally show, and the interests that are inserted with simultaneously compensating image improve final display effect.
Fig. 5 is the liquid crystal panel driver' s timing figure that the present embodiment is corresponding, supposes that liquid crystal panel has n capable, and a corresponding n gate drive signal is G1, G2 respectively ... Gn.For each two field picture, the longitudinal grid of time schedule controller sends a STV signal pulse, and between the pulse area of STV signal, sends two CPV signal pulses to gate drivers simultaneously, and adjacent rows TFT all has the moment of conducting simultaneously afterwards.Duplicate rows parallel output can be realized by the control of TP signal, increase sweep frequency.Specific implementation is described above, is not repeated at this.
As shown in Figure 6, the gate drivers of liquid crystal panel also receives time schedule controller and exports OE signal, the pulse of the present embodiment using high level as OE signal, the pulse of OE signal and 2i-1 impulsive synchronization of CPV signal, to make when 2i-1 pulse of CPV signal, gate drivers can not export high level as tft array, and TFT can not conducting, reduces the possibility that crosstalk produces.Concretely, above-mentionedly synchronously to refer to: the rising edge of the pulse of OE signal is identical with the rising edge of 2i-1 pulse of CPV signal; The negative edge of the pulse of OE signal is identical with the rising edge of 2i pulse of CPV signal.Ensure that when 2i pulse of CPV signal thus, adjacent rows TFT is had to be simultaneously open, the write of view data can be carried out simultaneously, be opened without TFT within the time between 2i pulse in 2i-1 pulse of CPV signal, therefore the write of view data is timesharing, decreases the possibility that TFT produces crosstalk.
Liquid crystal indicator can be liquid crystal TV set, panel computer (Pad, portableandroiddevice), mobile phone etc.
The liquid crystal indicator that the application provides comprises image processor, time schedule controller, is provided with the liquid crystal panel of gate drivers and source electrode driver.Wherein, image processor, for receiving input picture, and convergent-divergent is carried out to generate image to be displayed to input picture, the resolution of the line direction of image to be displayed is identical with the resolution of liquid crystal panel line direction, and the resolution of the column direction of image to be displayed is the half of the resolution of liquid crystal panel column direction; Time schedule controller, for exporting vertical start signal to gate drivers, and exports two vertical clock pulses to gate drivers under the pulse of vertical start signal.Because the vertical clock signal of first under the pulse of vertical start signal can control the first row thin film transistor (TFT) conducting of liquid crystal panel, the duration of conducting is consistent with the pulse duration of vertical start signal signal.When second vertical clock pulse signal starts, second row thin film transistor (TFT) starts conducting, the duration of conducting is also consistent with the pulse duration of vertical start signal signal, simultaneously due under a vertical start signal pulse, be provided with the output of two vertical clock pulse pulse signals, therefore there is duration simultaneously switched in the first row thin film transistor (TFT) and the second row thin film transistor (TFT), because the first row thin film transistor (TFT) and the second row thin film transistor (TFT) can be switched on simultaneously, therefore the duration that liquid crystal panel refreshes whole film transistor row used decreases half, and then make the refreshing frequency of liquid crystal panel improve one times, be conducive to carrying out moving image compensation.Simultaneously due to half that the resolution of image to be displayed column direction is the resolution of liquid crystal panel column direction, so image can be carried out complete display, because the vertical start signal signal of time schedule controller and vertical clock pulse signal make the refreshing frequency of liquid crystal panel be doubled, therefore within the identical time, prior art only shows piece image, and the scheme of the application can show two two field pictures, resolution due to image to be displayed column direction is the half of the resolution of liquid crystal panel column direction, so liquid crystal panel can present the total data of input picture in identical displaying time, there is better display effect display effect.
As shown in Figure 7, a kind of image processing method provided in the present embodiment, comprising:
S101: image processor receives input picture, and convergent-divergent is carried out to generate image to be displayed to input picture, the resolution of the line direction of image to be displayed is identical with the resolution of liquid crystal panel line direction, and the resolution of the column direction of image to be displayed is the half of the resolution of liquid crystal panel column direction;
S102: time schedule controller exports vertical start signal to the gate drivers of liquid crystal panel, and two vertical clock pulses are exported to gate drivers under the pulse of vertical start signal;
Particularly, liquid crystal panel comprises gate drivers and source electrode driver, time schedule controller exports vertical start signal to the gate drivers of liquid crystal panel, time schedule controller exports vertical clock signal to gate drivers, and exports two pulses of vertical clock signal when a pulse of vertical start signal.
S105: the vertical start signal that liquid crystal panel receives according to gate drivers and vertical clock pulse, and the image to be displayed that source electrode driver receives carries out image display;
Concretely, liquid crystal panel comprises gate drivers 1041, source electrode driver 1042, thin film transistor (TFT) 1043, also comprises liquid crystal molecule.Gate drivers, the STV signal received for basis and CPV signal, corresponding thin film transistor (TFT) in conducting membrane transistor array; Source electrode driver, for the image to be displayed that basis receives, in the thin film transistor (TFT) of conducting, write image, thin film transistor (TFT) stores corresponding electric charge according to the image graph picture of write in memory capacitance, and the voltage that the electric charge in stored charge is formed can drive liquid crystal molecule to rotate
Particularly, liquid crystal panel, according to vertical start signal, vertical clock signal that gate drivers receives, and the image to be displayed that source electrode driver receives, carry out image display.Gate drivers, the STV signal received for basis and CPV signal, corresponding thin film transistor (TFT) in conducting membrane transistor array; Source electrode driver, for according to the image to be displayed received, writes image graph picture in the thin film transistor (TFT) of conducting.
Concrete control procedure is not repeated at this.
Further, also comprise after S102 step:
Time schedule controller exports turntable driving output enable signal to gate drivers, and the initial time of turntable driving output enable signal is not later than 2i-1 vertical clock start of pulse, before ending at 2i vertical clock pulse.
Concretely, time schedule controller exports turntable driving output enable signal to gate drivers, and the initial time of turntable driving output enable signal is not later than 2i-1 vertical clock start of pulse, before ending at 2i vertical clock pulse.For latching and release image to be displayed, to realize the image write in tft array.
Further, also comprising after S104 step:
Time schedule controller is to source electrode driver output source driver latch signal, and source electrode latch signal and 2i vertical clock impulsive synchronization, carry out image write while making the capable pixel of 2i-1 and the capable pixel of 2i.
Concretely, time schedule controller exports OE signal to the gate drivers of liquid crystal panel, to control not having high level output in 2i-1 pulse of CPV signal at gate drivers between 2i pulse, decreases the possibility producing crosstalk.
Known above-mentioned two steps of art technology person can walk abreast, and also first can carry out one of them, then carry out another one.
Further, can also comprise after step slol: image processor inserts a frame and compensates image between adjacent two frame images to be displayed, wherein, the resolution compensating image is identical with the resolution of image to be displayed.Due to the raising of refreshing frequency, therefore when image shows, two continuous frames can adopt same piece image, also can increase by a frame and compensate image between adjacent two two field pictures, thus improve final display effect.
The liquid crystal indicator that the application provides comprises image processor, time schedule controller, is provided with the liquid crystal panel of gate drivers and source electrode driver.Wherein, image processor, for receiving input picture, and convergent-divergent is carried out to generate image to be displayed to input picture, the resolution of the line direction of image to be displayed is identical with the resolution of liquid crystal panel line direction, and the resolution of the column direction of image to be displayed is the half of the resolution of liquid crystal panel column direction; Time schedule controller, for exporting vertical start signal to gate drivers, and exports two vertical clock pulses to gate drivers under the pulse of vertical start signal.Because the vertical clock signal of first under the pulse of vertical start signal can control the first row thin film transistor (TFT) conducting of liquid crystal panel, the duration of conducting is consistent with the pulse duration of vertical start signal signal.When second vertical clock pulse signal starts, second row thin film transistor (TFT) starts conducting, the duration of conducting is also consistent with the pulse duration of vertical start signal signal, simultaneously due under a vertical start signal pulse, be provided with the output of two vertical clock pulse pulse signals, therefore there is duration simultaneously switched in the first row thin film transistor (TFT) and the second row thin film transistor (TFT), because the first row thin film transistor (TFT) and the second row thin film transistor (TFT) can be switched on simultaneously, therefore the duration that liquid crystal panel refreshes whole film transistor row used decreases half, and then make the refreshing frequency of liquid crystal panel improve one times, be conducive to carrying out moving image compensation.Simultaneously due to half that the resolution of image to be displayed column direction is the resolution of liquid crystal panel column direction, so image can be carried out complete display, because the vertical start signal signal of time schedule controller and vertical clock pulse signal make the refreshing frequency of liquid crystal panel be doubled, therefore within the identical time, prior art only shows piece image, and the scheme of the application can show two two field pictures, resolution due to image to be displayed column direction is the half of the resolution of liquid crystal panel column direction, so liquid crystal panel can present the total data of input picture in identical displaying time, there is better display effect display effect.
Through the above description of the embodiments, those skilled in the art can be well understood to, for convenience and simplicity of description, only be illustrated with the division of above-mentioned each functional module, in practical application, can distribute as required and by above-mentioned functions and be completed by different functional modules, the inner structure by device is divided into different functional modules, to complete all or part of function described above.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (10)
1. a liquid crystal indicator, comprises liquid crystal panel, and described liquid crystal panel comprises gate drivers and source electrode driver, it is characterized in that, also comprises:
Image processor, for receiving input picture, and convergent-divergent is carried out to generate image to be displayed to described input picture, the resolution of the line direction of described image to be displayed is identical with the resolution of described liquid crystal panel line direction, and the resolution of the column direction of described image to be displayed is the half of the resolution of described liquid crystal panel column direction.
Time schedule controller, for exporting vertical start signal to described gate drivers, and exports two vertical clock pulses to described gate drivers under the pulse of described vertical start signal;
Liquid crystal panel, for the vertical start signal that receives according to described gate drivers and vertical clock pulse, and the described image to be displayed that described source electrode driver receives carries out image display.
2. liquid crystal indicator as claimed in claim 1, is characterized in that,
Time schedule controller, also for after output vertical clock signal, turntable driving output enable signal is exported to gate drivers, the initial time of the pulse of described turntable driving output enable signal is not later than 2i-1 described vertical clock start of pulse, before ending at 2i described vertical clock pulse.
3. liquid crystal indicator as claimed in claim 1, is characterized in that,
Time schedule controller, also for source electrode driver output source driver latch signal, described source electrode latch signal and 2i described vertical clock impulsive synchronization, carry out image write while making the capable pixel of 2i-1 and the capable pixel of 2i.
4. liquid crystal indicator as claimed in claim 1, is characterized in that,
The resolution of described liquid crystal panel is 4K2K.
5. liquid crystal indicator as described in claim 1-4 any one, is characterized in that,
Described image processor is also for inserting a frame compensation image between image to be displayed described in adjacent two frames, wherein, the resolution of described compensation image is identical with the resolution of described image to be displayed.
6. a method for displaying image, is applied to liquid crystal indicator, it is characterized in that;
Image processor receives input picture, and convergent-divergent is carried out to generate image to be displayed to described input picture, the resolution of the line direction of described image to be displayed is identical with the resolution of described liquid crystal panel line direction, and the resolution of the column direction of described image to be displayed is the half of the resolution of described liquid crystal panel column direction;
Time schedule controller exports vertical start signal to the gate drivers of liquid crystal panel, and exports two vertical clock pulses to described gate drivers under the pulse of vertical start signal;
The vertical start signal that liquid crystal panel receives according to described gate drivers and vertical clock pulse, and the described image to be displayed that described source electrode driver receives carries out image display.
7. method as claimed in claim 6, is characterized in that,
Vertical start signal is being exported to gate drivers, and export two vertical clock pulses to gate drivers under the pulse of vertical start signal after,
Time schedule controller exports turntable driving output enable signal to gate drivers, and the initial time of described turntable driving output enable signal is not later than 2i-1 described vertical clock start of pulse, before ending at 2i described vertical clock pulse.
8. method as claimed in claim 6, is characterized in that,
Vertical start signal is being exported to gate drivers, and export two vertical clock pulses to gate drivers under the pulse of vertical start signal after,
Time schedule controller is to source electrode driver output source driver latch signal, and described source electrode latch signal and 2i described vertical clock impulsive synchronization, carry out image write while making the capable pixel of 2i-1 and the capable pixel of 2i.
9. method as claimed in claim 6, is characterized in that,
The resolution of described liquid crystal panel is 4K2K.
10. method as described in claim 6-9, is characterized in that,
Receive input picture at described image processor, and convergent-divergent is carried out to described input picture also comprise to generate image to be displayed:
Described image processor is inserting a frame compensation image between image to be displayed described in described adjacent two frames, wherein, the resolution of described compensation image is identical with the resolution of described image to be displayed.
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