CN104361872A - Pixel driving method - Google Patents
Pixel driving method Download PDFInfo
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- CN104361872A CN104361872A CN201410652611.4A CN201410652611A CN104361872A CN 104361872 A CN104361872 A CN 104361872A CN 201410652611 A CN201410652611 A CN 201410652611A CN 104361872 A CN104361872 A CN 104361872A
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- duration
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- grid line
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Abstract
The embodiment of the invention provides a pixel driving method and relates to the technical field of displaying. The problem that displaying device horizontal brightness is not even can be solved. The pixel driving method comprises the steps that pixel charging time is adjusted, so that the higher the resistance value of a grid line binding line connected with a pixel is, the longer the charging time of the pixel is.
Description
Technical field
The present invention relates to display technique field, particularly relate to a kind of image element driving method.
Background technology
In order to realize the normal display of liquid crystal display, need the enterprising row wiring of non-display area of the array base palte comprised in liquid crystal display, form at least one wiring region, thus the drive singal provided by driving circuit transfers on data line or grid line, thus pixel is charged.Such as, many grid line binding lines are had in the wiring region of array base palte, one end of every bar grid line binding line is in order to connect gate driver circuit, the other end is in order to connect a grid line, thus the Signal transmissions exported by gate driver circuit is to corresponding grid line, and then the one-row pixels that this grid line connects is charged.
At present, the Main Trends of The Development of liquid crystal display is narrow frame, when liquid crystal display has narrow frame, non-display area on array base palte is very narrow, the distribution situation of many grid line binding lines now in wiring region as shown in Figure 1, the grid line binding line 1 being positioned at the centre of wiring region is shorter, resistance is less, the grid line binding line 1 being positioned at the both sides up and down of wiring region is longer, resistance is larger, cause the charge rate of the pixel be positioned within the identical duration of charging in the middle of wiring region high, brightness is large, the charge rate being positioned at the pixel of upper and lower both sides, wiring region is low, brightness is little, thus in procedure for displaying, there will be the phenomenon of level brightness inequality (H-Block).
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of image element driving method, can solve the problem of display device level brightness inequality.
For solving the problems of the technologies described above, embodiments providing a kind of image element driving method, adopting following technical scheme:
A kind of image element driving method comprises:
Regulate the duration of charging of pixel, the resistance of the grid line binding line that described pixel is connected is larger, and the duration of charging of described pixel is longer.
Described pixel connects described grid line binding line by grid line, by regulating the row opening time of described grid line, regulates the duration of charging of described pixel.
By regulating the high level lasting time of row start signal, regulating the row opening time of described grid line, the duration of charging of described pixel is regulated.
Described row start signal is vertical clock pulse signal.
The duration of charging of pixel described in two row of arbitrary neighborhood is different.
Described in two at least adjacent row, the duration of charging of pixel is identical.
The described duration of charging to pixel regulates, and comprising:
Increase the duration of charging being positioned at the described pixel of upper and lower both sides, each wiring region, reduce the duration of charging of the described pixel be positioned in the middle of each described wiring region, the sweep time maintaining every frame picture is fixed.
Regulate in the described duration of charging to pixel, comprise before:
The duration of charging of described pixel is determined often to go by debugging;
To often go duration of charging of described pixel stored in register;
The duration of charging of often capable described pixel is obtained from described register.
In the described duration of charging determining often to go described pixel by debugging, comprising:
Selected reference grid line;
Resistance value ratio between the resistance of the described grid line binding line that the resistance calculating the described grid line binding line that other every bar grid lines connect respectively is connected with described benchmark grid line;
Regulate often going duration of charging of described pixel according to each described resistance value ratio, the ratio between the duration of charging of the described pixel that duration of charging of the described pixel that other grid lines are connected connects with described benchmark grid line is identical with described resistance value ratio.
Describedly will often go duration of charging of described pixel stored in register, comprising:
Duration of charging of pixel described in two row of arbitrary neighborhood is time different, by the duration of charging of pixel described in a line stored in a described register;
When described in two at least adjacent row, the duration of charging of pixel is identical, by the duration of charging of pixel described in the adjacent the multirow identical duration of charging stored in a described register.
Embodiments provide a kind of image element driving method, this image element driving method comprises and regulating the duration of charging of pixel, the resistance of the grid line binding line that pixel is connected is larger, the duration of charging of pixel is longer, and then the large and problem that the charge rate of pixel that is that cause is low of resistance due to grid line binding line can be solved, make the brightness of all pixels consistent, thus solve the problem of display device level brightness inequality.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, below the accompanying drawing used required in describing embodiment is briefly described, 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 distribution situation schematic diagram of the grid line binding line in non-display area;
Fig. 2 is the sequential chart of CPV in prior art;
Fig. 3 is the sequential chart of CPV in the embodiment of the present invention;
Fig. 4 is the process flow diagram of the step comprised before regulating the duration of charging of pixel in the embodiment of the present invention;
Fig. 5 is the process flow diagram being determined the concrete steps in the duration of charging of often row pixel in the embodiment of the present invention by debugging.
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 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.
Embodiments provide a kind of image element driving method, this image element driving method comprises: regulate the duration of charging of pixel, and the resistance of the grid line binding line that pixel is connected is larger, and the duration of charging of pixel is longer.Now, along with the increase of the resistance of grid line binding line, the duration of charging also corresponding increase of pixel, thus the large and problem that the charge rate of pixel that is that cause is low of resistance due to grid line binding line can be solved, make the brightness of all pixels consistent, thus solve the problem of display device level brightness inequality.Usually, the length of grid line binding line is longer, and resistance is larger, and therefore, the length of the grid line binding line that pixel connects is longer, and the duration of charging of pixel is longer.
Particularly, pixel connects grid line binding line by grid line, in the process of grid line transmission cut-in voltage, the cut-in voltage that gate driver circuit exports transfers to grid line by grid line binding line, and then the thin film transistor (TFT) making grid line control is in opening, and then make pixel be in charged state, close in the process of voltage in grid line transmission, the thin film transistor (TFT) that grid line controls is in closed condition, thus cannot charge to pixel, therefore, by regulating the row opening time of grid line, the duration of charging of pixel can be regulated.The row opening time of grid line is longer, and the duration of charging of the pixel that this grid line connects is longer.
Particularly, when the row start signal that grid line is corresponding is in high level, this grid line transmission cut-in voltage, when the row start signal that grid line is corresponding is in low level, voltage is closed in the transmission of this grid line, therefore, and can by regulating the high level lasting time of row start signal, regulate the row opening time of grid line, and then the duration of charging of pixel is regulated.
Exemplarily, row start signal can be CPV (Clock Pulse Vertical, vertical clock pulse signal).The sequential of CPV signal of the prior art as shown in Figure 2, one of them high level is in order to open a grid line, the duration of each high level is identical, make the row opening time of every bar grid line identical, display device there will be the problem of level brightness inequality in procedure for displaying, the sequential of the CPV signal in the embodiment of the present invention as shown in Figure 3, one of them high level is in order to open a grid line, the duration of part high level is longer, the duration of another part high level is shorter, the grid line that long-term high level connects in order to open the larger grid line binding line of resistance, the grid line that duration shorter high level connects in order to open the less grid line binding line of resistance, thus solve the problem of the level brightness inequality that display device occurs in procedure for displaying.
In addition, the resistance of grid line binding line that pixel connects is larger, and the duration of charging of pixel is longer specifically comprises following several situation:
Situation one, the duration of charging of two row pixels of arbitrary neighborhood is different, and the duration of charging of the pixel that the grid line binding line that now resistance is different connects is different, and the display effect of display device is best, but the driving method of pixel is complicated, and cost is high.
Situation two, when the resistance gap of the grid line binding line of adjacent at least two row pixels connections is less, the charge rate of this few row pixel is more or less the same, brightness is more or less the same, when naked eyes cannot observe out the problem of horizontal brightness disproportionation, the duration of charging of two at least adjacent row pixels can be made identical, to simplify the driving method of pixel, cost-saving.
It should be noted that, the two kinds of situations more than enumerated understand for the ease of those skilled in the art, but those skilled in the art are it is appreciated that the resistance of grid line binding line that connects of pixel is larger, the duration of charging of pixel is longer specifically can also comprise other situations, and the embodiment of the present invention repeats no longer one by one.
In addition, because the grid line binding line be usually located in the middle of each wiring region is shorter, resistance is less, the grid line binding line being positioned at upper and lower both sides, each wiring region is longer, resistance is comparatively large, therefore, regulates specifically comprise in the embodiment of the present invention to the duration of charging of pixel: increase the duration of charging being positioned at the pixel of upper and lower both sides, each wiring region, reduce the duration of charging of the pixel be positioned in the middle of each wiring region, fix with the sweep time maintaining every frame picture.
In addition, for the ease of regulating the duration of charging of pixel, before the duration of charging of pixel is regulated, step as shown in Figure 4 in the embodiment of the present invention, is comprised:
Step S401, determine duration of charging of often row pixel by debugging.
Step S402, by the duration of charging of every row pixel stored in register.
Step S403, from register, obtain duration of charging of often row pixel.
Particularly, in the process that reality exports, the duration of charging of often row pixel can be obtained by the mode of tabling look-up from register.
Further, step S401 determines the duration of charging of often row pixel by debugging, comprises step as shown in Figure 5:
Step S501, selected reference grid line.
Particularly, when design display device, usually need the resistance of the every bar grid line calculated, therefore, the grid line selecting resistance minimum in the embodiment of the present invention is as benchmark grid line.
Resistance value ratio between the resistance of the grid line binding line that step S502, the resistance calculating the grid line binding line that other every bar grid lines connect respectively are connected with benchmark grid line.
Step S503, regulate according to the duration of charging of each resistance value ratio to every row pixel, the ratio between the duration of charging of the pixel that other grid lines are connected and the duration of charging of the pixel that benchmark grid line connects is identical with resistance value ratio.
Further, step S402 by the duration of charging of every row pixel stored in specifically comprising following two kinds of situations in register:
Situation one, when the duration of charging of two row pixels of arbitrary neighborhood is different, by the duration of charging of one-row pixels stored in a register.
Situation two, when the duration of charging of two at least adjacent row pixels is identical, by the identical duration of charging of adjacent multirow pixel stored in a register, thus reduces the cost of display device.
Embodiments provide a kind of image element driving method, this image element driving method comprises and regulating the duration of charging of pixel, the resistance of the grid line binding line that pixel is connected is larger, the duration of charging of pixel is longer, and then the large and problem that the charge rate of pixel that is that cause is low of resistance due to grid line binding line can be solved, make the brightness of all pixels consistent, thus solve the problem of display device level brightness inequality.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add required common hardware by software and realize, and can certainly pass through hardware, but in a lot of situation, the former is better embodiment.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in the storage medium that can read, as the floppy disk of computing machine, hard disk or CD etc., comprise some instructions and perform method described in each embodiment of the present invention in order to make a computer equipment (can be personal computer, server, or the network equipment etc.).
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 described claim.
Claims (10)
1. an image element driving method, is characterized in that, comprising:
Regulate the duration of charging of pixel, the resistance of the grid line binding line that described pixel is connected is larger, and the duration of charging of described pixel is longer.
2. image element driving method according to claim 1, is characterized in that,
Described pixel connects described grid line binding line by grid line, by regulating the row opening time of described grid line, regulates the duration of charging of described pixel.
3. image element driving method according to claim 2, is characterized in that,
By regulating the high level lasting time of row start signal, regulating the row opening time of described grid line, the duration of charging of described pixel is regulated.
4. image element driving method according to claim 3, is characterized in that,
Described row start signal is vertical clock pulse signal.
5. image element driving method according to claim 1, is characterized in that,
The duration of charging of pixel described in two row of arbitrary neighborhood is different.
6. image element driving method according to claim 1, is characterized in that,
Described in two at least adjacent row, the duration of charging of pixel is identical.
7. image element driving method according to claim 1, is characterized in that,
The described duration of charging to pixel regulates, and comprising:
Increase the duration of charging being positioned at the described pixel of upper and lower both sides, each wiring region, reduce the duration of charging of the described pixel be positioned in the middle of each described wiring region, the sweep time maintaining every frame picture is fixed.
8. the image element driving method according to any one of claim 1-7, is characterized in that,
Regulate in the described duration of charging to pixel, comprise before:
The duration of charging of described pixel is determined often to go by debugging;
To often go duration of charging of described pixel stored in register;
The duration of charging of often capable described pixel is obtained from described register.
9. image element driving method according to claim 8, is characterized in that,
In the described duration of charging determining often to go described pixel by debugging, comprising:
Selected reference grid line;
Resistance value ratio between the resistance of the described grid line binding line that the resistance calculating the described grid line binding line that other grid lines connect respectively is connected with described benchmark grid line;
Regulate often going duration of charging of described pixel according to each described resistance value ratio, the ratio between the duration of charging of the described pixel that duration of charging of the described pixel that other grid lines are connected connects with described benchmark grid line is identical with described resistance value ratio.
10. image element driving method according to claim 8 or claim 9, is characterized in that,
Describedly will often go duration of charging of described pixel stored in register, comprising:
Duration of charging of pixel described in two row of arbitrary neighborhood is time different, by the duration of charging of pixel described in a line stored in a described register;
When described in two at least adjacent row, the duration of charging of pixel is identical, by the duration of charging of pixel described in the adjacent the multirow identical duration of charging stored in a described register.
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| CN201410652611.4A CN104361872A (en) | 2014-11-17 | 2014-11-17 | Pixel driving method |
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| CN201410652611.4A CN104361872A (en) | 2014-11-17 | 2014-11-17 | Pixel driving method |
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Application publication date: 20150218 |