CN202258266U - Liquid crystal display device - Google Patents
Liquid crystal display device Download PDFInfo
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- CN202258266U CN202258266U CN2011203733932U CN201120373393U CN202258266U CN 202258266 U CN202258266 U CN 202258266U CN 2011203733932 U CN2011203733932 U CN 2011203733932U CN 201120373393 U CN201120373393 U CN 201120373393U CN 202258266 U CN202258266 U CN 202258266U
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Abstract
The utility model relates to a liquid crystal display device including a scanning driving module, a data driving module, pixels, data lines, a shift register module and scanning lines. The scanning lines includes first-kind scanning lines connecting with the scanning driving module and the pixels respectively and used for controlling a charging time of the pixels according to a first scanning signal, and second-kind scanning lines connecting with the shift register module and the pixels respectively and used for controlling a driving time of sub-pixels of the pixels according to a second scanning signal. Without increasing a device cost, the liquid crystal display device in the utility model can realize reverse scanning and solves the technical problem that a proper driving effect can not be kept when a prior liquid crystal display device is adopted for reverse scanning driving.
Description
Technical field
The utility model relates to field of liquid crystal display, particularly relates to a kind of liquid crystal indicator that cost can be realized reverse scan that do not increase.
Background technology
Present liquid crystal indicator is general to adopt that connected mode drives between sweep trace shown in Figure 1 and the pixel, and Fig. 2 is the drive signal waveform figure of sweep trace shown in Figure 1.As shown in Figure 1, each pixel is connected to a sweep trace (like GATE_N, GATE_N+1, GATE_N+2), and the drive waveforms of sweep trace is as shown in Figure 2, and sweep trace is opened in regular turn, and the waveform width of every sweep trace is approximately 10-20us.
When liquid crystal indicator has multizone (multi-domain) design; Connected mode between sweep trace and the pixel is as shown in Figure 3; Each pixel all is connected on two sweep traces among the figure; Wherein the voltage of sweep trace control pixel charging is called first kind sweep trace here, like GATE_N, GATE_N+1, GATE_N+2; The electric charge of the sub-pixel of another sweep trace control pixel is shared, and is called second type of sweep trace here, like SHARING_N, SHARING_N+1, SHARING_N+2.First kind sweep trace is a n bar sweep trace (like GATE_N) among the figure, and second type of sweep trace is n+1 bar sweep trace (like SHARING_N), and wherein SHARING_N is next bar sweep trace of GATE_N.
Fig. 4 is the sweep trace shown in Figure 3 and the distortion of the connected mode between the pixel; Difference is a n bar sweep trace (like GATE_N) for first kind sweep trace; Second type of sweep trace is n+2 bar sweep trace (like SHARING_N), and wherein SHARING_N is following two sweep traces of GATE_N.And the like, second type of sweep trace also can be n+m bar sweep trace (m is the positive integer greater than 2).
The drive waveforms figure of sweep trace for liquid crystal indicator shown in Figure 5 with multizone design.From figure, can see that first kind sweep trace (GATE_N, GATE_N+1, GATE_N+2) and second type of sweep trace (SHARING_N, SHARING_N+1, SHARING_N+2) are all opened in regular turn, the waveform width of every sweep trace is 10-20us.In order to satisfy should producing effect of multizone design, make sub-pixel to work normally, the time of opening of second type of sweep trace must be later than opening the time of first kind sweep trace.When but such design is adopted the driving of reverse scan at display; The drive waveforms figure of its sweep trace is as shown in Figure 6, and the time of opening of second type of sweep trace will be caused the due driving effect of LCD that can't keep the multizone design early than the time of opening of first kind sweep trace.
So, be necessary to provide a kind of liquid crystal indicator, to solve the existing in prior technology problem.
The utility model content
The purpose of the utility model is to provide a kind of cost that do not increase can realize the reverse scan liquid crystal indicator, to solve existing liquid crystal indicator can't keep due driving effect when adopting reverse scan to drive technical matters.
The utility model relates to a kind of liquid crystal indicator, comprising: the turntable driving module is used to produce first sweep signal; The data-driven module is used to produce grey scale signal; Pixel: be used for showing said grey scale signal according to said first sweep signal, each pixel comprises at least two subpixels and the pixel capacitance that the grey scale signal of said sub-pixel is redistributed; Data line: be connected with said pixel with said data-driven module respectively, be used for controlling the charging voltage of said pixel according to said grey scale signal; Shift LD module: be used for producing and corresponding second sweep signal of said first sweep signal according to said first sweep signal; And sweep trace: comprising: first kind sweep trace: be connected with said pixel with said turntable driving module respectively, be used for controlling the duration of charging of said pixel according to said first sweep signal; And second type of sweep trace: be connected with said pixel, be used for controlling the driving time of the sub-pixel of said pixel according to said second sweep signal; Said shift LD module is connected with said first kind sweep trace and with the corresponding second type of sweep trace of said first kind sweep trace respectively.
In the liquid crystal indicator of the utility model, said first kind sweep trace and said second type of scan line spacings are arranged.
In the liquid crystal indicator of the utility model,, A bar sweep trace in interval between said first kind sweep trace and the corresponding second type of sweep trace, wherein A is the positive integer greater than 0.
In the liquid crystal indicator of the utility model; Said shift LD module is the single shift register; Said shift register comprises signal input tube pin, clock input pin, output pin and feedback pin; Said signal input tube pin is connected with said first kind sweep trace, and said output pin is connected with said second type of sweep trace respectively with said feedback pin, and said clock input pin is used to import said scheduled delay T.
In the liquid crystal indicator of the utility model; Said shift LD module comprises and is connected into multistage a plurality of shift registers successively; Said shift register comprises signal input tube pin, clock input pin, output pin and feedback pin; Said signal input tube pin is connected with the output pin of the shift register of upper level; Said output pin is connected with the feedback pin of the shift register of the signal input tube pin of the shift register of next stage and upper level respectively, and said clock input pin is used to import said scheduled delay T; The signal input tube pin of the shift register of the first order is connected with said first kind sweep trace, and the output pin of the shift register of afterbody is connected with said second type of sweep trace respectively with the feedback pin of the shift register of upper level and is connected.
In the liquid crystal indicator of the utility model, the waveform width of said first sweep signal and said second sweep signal is 10-20us.
The liquid crystal indicator of the utility model need not increase the reverse scan that installation cost can be realized any liquid crystal indicator, has solved existing liquid crystal indicator can't keep due driving effect when adopting reverse scan to drive technical matters.
For letting the foregoing of the utility model can be more obviously understandable, hereinafter is special lifts preferred embodiment, and cooperates appended graphicly, elaborates as follows:
Description of drawings
Fig. 1 is the sweep trace of existing liquid crystal indicator and the structural representation of pixel;
Fig. 2 is the drive signal waveform figure of sweep trace shown in Figure 1;
Fig. 3 is one of sweep trace and the structural representation of pixel of the liquid crystal indicator of existing multizone design;
Fig. 4 be the design of existing multizone liquid crystal indicator sweep trace and pixel structural representation two;
Fig. 5 is the drive signal waveform figure of sweep trace of the liquid crystal indicator of existing multizone design;
The drive signal waveform figure of the sweep trace when Fig. 6 is the liquid crystal indicator reverse scan of existing multizone design;
Fig. 7 is one of sweep trace and the structural representation of pixel of the liquid crystal indicator of the utility model;
Fig. 8 is the structural representation of single shift register of the liquid crystal indicator of the utility model;
Fig. 9 is the connection synoptic diagram of a plurality of shift registers of the liquid crystal indicator of the utility model;
Figure 10 be the utility model liquid crystal indicator sweep trace and pixel structural representation two.
Embodiment
Below the explanation of each embodiment be with reference to additional graphic, can be in order to illustration the utility model in order to the specific embodiment of implementing.The direction term that the utility model is mentioned, for example " on ", D score, " preceding ", " back ", " left side ", " right side ", " interior ", " outward ", " side " etc., only be direction with reference to annexed drawings.Therefore, the direction term of use is in order to explanation and understands the utility model, but not in order to restriction the utility model.
In the drawings, the unit of structural similarity is to represent with same numeral.
In the structural representation of the sweep trace of the liquid crystal indicator of the utility model shown in Figure 7 and pixel, said liquid crystal indicator comprises turntable driving module 710, data-driven module (not shown), pixel 720, data line 730, shift LD module 740 and sweep trace 750.Turntable driving module 710 is used to produce first sweep signal.The data-driven module is used to produce grey scale signal.Pixel 720 is used for according to the first sweep signal display gray scale signal, the pixel capacitance that each pixel 720 includes two subpixels and the grey scale signal of sub-pixel is redistributed at least.Data line 730 is connected with pixel 720 with the data-driven module respectively, is used for the charging voltage according to grey scale signal control pixel.Shift LD module 740 is used for producing and corresponding second sweep signal of first sweep signal (wherein the waveform width of first sweep signal and second sweep signal is preferably 10-20us) according to first sweep signal.Sweep trace 750 comprises first kind sweep trace (GATE_N, GATE_N+1, GATE_N+2) and second type of sweep trace (SHARING_N, SHARING_N+1, SHARING_N+2); First kind sweep trace is connected with pixel 720 with turntable driving module 710 respectively, is used for the duration of charging according to first sweep signal control pixel 720; Second type of sweep trace is connected with pixel 720 with shift LD module 740 respectively, is used for the driving time according to the sub-pixel of second sweep signal control pixel 720.First kind sweep trace is connected with corresponding second type of sweep trace through shift LD module 740.
The liquid crystal indicator of the utility model is connected (this second type of sweep trace is connected to same pixel 720 with corresponding first kind sweep trace) through shift LD module 740 with first kind sweep trace and with the corresponding second type of sweep trace of first kind sweep trace.When the liquid crystal indicator of the utility model uses; At first in shift LD module 740, set scheduled delay T; Receive first sweep signal (time of hypothesis is t) of first kind sweep trace (like GATE_N) when shift LD module 740; At this moment first kind sweep trace carries out charging operations (wherein first sweep signal control duration of charging, grey scale signal is controlled charging voltage) according to first sweep signal and grey scale signal to pixel 720; Shift LD module 740 can (time is t+T) produce one and corresponding second sweep signal of first sweep signal after postponing scheduled delay T simultaneously; And send to this second sweep signal and the corresponding second type of sweep trace of first kind sweep trace (like SHARING_N); At this moment because corresponding pixel 720 has been accomplished charging operations; Second type of sweep trace carries out driving operations (wherein the second sweep signal controlling and driving time, the grey scale signal of pixel capacitance control different subpixel is big or small) according to second sweep signal and pixel capacitance to sub-pixel.
Above-mentioned visible, second sweep signal in second type of sweep trace is later than the first sweep signal scheduled delay T in the corresponding first kind sweep trace all the time.Therefore the liquid crystal indicator of the utility model is when adopting reverse scan; Can guarantee that equally the opening time of second type of sweep trace is later than the opening time of corresponding first kind sweep trace; And the time for delay can be adjusted through changing scheduled delay T, is duplicate during like this with forward scan.Under this design, the liquid crystal indicator of the utility model only through on existing liquid crystal indicator, increasing the reverse scan function that a shift LD module 740 has just realized liquid crystal indicator, has increased competitiveness of product.
Structural representation at the single shift register of the liquid crystal indicator of the utility model shown in Figure 8; Visible shift LD module is the single shift register among the figure; Said shift register comprises signal input tube pin Input, clock input pin CLK, output pin Out and feedback pin FB; Wherein signal input tube pin Input is connected with first kind sweep trace; Output pin Output is connected with second type of sweep trace respectively with feedback pin FB, and clock input pin CLK is used to import scheduled delay T.During the work of this shift register; Signal input tube pin Input receives first sweep signal of first kind sweep trace as triggering; At this moment signal input tube pin Input end is high level, and the current potential that makes Q order raises, and then opens T1; Make output pin Output export the CLK signal, at this moment CLK is a low level.When first sweep signal was closed, signal input tube pin Input end make T2 close, but Q point current potential still kept high level for low level, and at this moment CLK is a high level, so output pin Output output high level is got second sweep signal.Feed back pin FB receives second type of sweep trace after certain delay high level signal simultaneously; Open T 3 and T4; The current potential that output pin Output and Q are ordered drags down, and then closes the output of output pin Output, thereby has accomplished a work period of shift register.
In the connection synoptic diagram of a plurality of shift registers of the liquid crystal indicator of the utility model shown in Figure 9; It is thus clear that comprising, the shift LD module is connected into multistage a plurality of shift registers successively among the figure; Said shift register comprises signal input tube pin ST, clock input pin CLK, output pin Out and feedback pin FB; Signal input tube pin ST is connected with the output pin Out of the shift register of upper level; Output pin Out is connected with the feedback pin FB of the shift register of the signal input tube pin ST of the shift register of next stage and upper level respectively, and said clock input pin CLK is used to import said scheduled delay T; The signal input tube pin ST of the shift register of the first order is connected with said first kind sweep trace, and the output pin Out of the shift register of afterbody is connected with said second type of sweep trace respectively with the feedback pin FB of the shift register of upper level and is connected.Multistage a plurality of shift registers can carry out better scheduled delay T, adjustment more accurately to adopt above-mentioned being connected into.The principle of work of single shift register is with above-mentioned identical.
Preferred embodiment as the liquid crystal indicator of the utility model; In the sweep trace of the liquid crystal indicator of the utility model shown in figure 10 and the structural representation of pixel; First kind sweep trace (GATE_N, GATE_N+1, GATE_N+2) and second type of sweep trace (SHARING_N, SHARING_N+1, SHARING_N+2) are spaced; A bar sweep trace in interval between first kind sweep trace and the corresponding second type of sweep trace; Wherein A is the positive integer greater than 0, and A wherein shown in Figure 10 is 2, certainly also can be other greater than 0 positive integer.The liquid crystal indicator of the utility model can be transformed realization on the liquid crystal indicator of existing any multizone design, only need use the shift LD module to be connected with corresponding second type of sweep trace first kind sweep trace and get final product.
In sum; Though the utility model discloses as above with preferred embodiment; But above-mentioned preferred embodiment is not that those of ordinary skill in the art is in spirit that does not break away from the utility model and scope in order to restriction the utility model; All can do various changes and retouching, so the protection domain of the utility model is as the criterion with the scope that claim defines.
Claims (8)
1. a liquid crystal indicator is characterized in that, comprising:
The turntable driving module is used to produce first sweep signal;
The data-driven module is used to produce grey scale signal;
Pixel is used for showing said grey scale signal according to said first sweep signal that each pixel comprises at least two subpixels and the pixel capacitance that the grey scale signal of said sub-pixel is redistributed;
Data line is connected with said pixel with said data-driven module respectively, is used for controlling according to said grey scale signal the charging voltage of said pixel;
The shift LD module is used for producing and corresponding second sweep signal of said first sweep signal according to said first sweep signal; And
Sweep trace comprises:
First kind sweep trace is connected with said pixel with said turntable driving module respectively, is used for controlling according to said first sweep signal duration of charging of said pixel; And
Second type of sweep trace is connected with said pixel, is used for controlling according to said second sweep signal driving time of the sub-pixel of said pixel;
Said shift LD module is connected with said first kind sweep trace and with the corresponding second type of sweep trace of said first kind sweep trace respectively.
2. liquid crystal indicator according to claim 1 is characterized in that, said first kind sweep trace and said second type of scan line spacings are arranged.
3. liquid crystal indicator according to claim 2 is characterized in that, A bar sweep trace in interval between said first kind sweep trace and the corresponding second type of sweep trace, and wherein A is the positive integer greater than 0.
4. liquid crystal indicator according to claim 2; It is characterized in that; Said shift LD module is the single shift register, and said shift register comprises signal input tube pin, clock input pin, output pin and feedback pin, and said signal input tube pin is connected with said first kind sweep trace; Said output pin is connected with said second type of sweep trace respectively with said feedback pin, and said clock input pin is used to import said scheduled delay T.
5. liquid crystal indicator according to claim 2; It is characterized in that; Said shift LD module comprises and is connected into multistage a plurality of shift registers successively; Said shift register comprises signal input tube pin, clock input pin, output pin and feedback pin; Said signal input tube pin is connected with the output pin of the shift register of upper level, and said output pin is connected with the feedback pin of the shift register of the signal input tube pin of the shift register of next stage and upper level respectively, and said clock input pin is used to import said scheduled delay T;
The signal input tube pin of the shift register of the first order is connected with said first kind sweep trace, and the output pin of the shift register of afterbody is connected with said second type of sweep trace respectively with the feedback pin of the shift register of upper level and is connected.
6. liquid crystal indicator according to claim 3; It is characterized in that; Said shift LD module is the single shift register, and said shift register comprises signal input tube pin, clock input pin, output pin and feedback pin, and said signal input tube pin is connected with said first kind sweep trace; Said output pin is connected with said second type of sweep trace respectively with said feedback pin, and said clock input pin is used to import said scheduled delay T.
7. liquid crystal indicator according to claim 3; It is characterized in that; Said shift LD module comprises and is connected into multistage a plurality of shift registers successively; Said shift register comprises signal input tube pin, clock input pin, output pin and feedback pin; Said signal input tube pin is connected with the output pin of the shift register of upper level, and said output pin is connected with the feedback pin of the shift register of the signal input tube pin of the shift register of next stage and upper level respectively, and said clock input pin is used to import said scheduled delay T;
The signal input tube pin of the shift register of the first order is connected with said first kind sweep trace, and the output pin of the shift register of afterbody is connected with said second type of sweep trace respectively with the feedback pin of the shift register of upper level and is connected.
8. liquid crystal indicator according to claim 1 is characterized in that, the waveform width of said first sweep signal and said second sweep signal is 10-20us.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203733932U CN202258266U (en) | 2011-09-27 | 2011-09-27 | Liquid crystal display device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203733932U CN202258266U (en) | 2011-09-27 | 2011-09-27 | Liquid crystal display device |
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| CN202258266U true CN202258266U (en) | 2012-05-30 |
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| CN2011203733932U Expired - Lifetime CN202258266U (en) | 2011-09-27 | 2011-09-27 | Liquid crystal display device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324224A (en) * | 2011-09-27 | 2012-01-18 | 深圳市华星光电技术有限公司 | Liquid crystal display and driving method thereof |
| CN106249496A (en) * | 2016-08-31 | 2016-12-21 | 深圳市华星光电技术有限公司 | Pixel cell, pixel-driving circuit and driving method |
-
2011
- 2011-09-27 CN CN2011203733932U patent/CN202258266U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324224A (en) * | 2011-09-27 | 2012-01-18 | 深圳市华星光电技术有限公司 | Liquid crystal display and driving method thereof |
| CN102324224B (en) * | 2011-09-27 | 2013-03-27 | 深圳市华星光电技术有限公司 | Liquid crystal display and driving method thereof |
| CN106249496A (en) * | 2016-08-31 | 2016-12-21 | 深圳市华星光电技术有限公司 | Pixel cell, pixel-driving circuit and driving method |
| CN106249496B (en) * | 2016-08-31 | 2020-02-18 | 深圳市华星光电技术有限公司 | Pixel unit, pixel driving circuit and driving method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |