CN102842297B - Control the method for GTG, GTG control device and liquid crystal display - Google Patents
Control the method for GTG, GTG control device and liquid crystal display Download PDFInfo
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Abstract
The embodiment of the present invention provides a kind of method, GTG control device and the liquid crystal display that control GTG, and display comprises multiple pixel; Comprise: obtain the brightness L0 of pixel in present frame finish time; According to the brightness L0 of present frame finish time, obtain the driving GTG of pixel in target frame; Wherein, target frame is a rear frame of present frame; Export in target frame and drive GTG, drive GTG to make pixel equal to meet the object brightness L1 of the target frame of human eye expectation value in the intrinsic brilliance of target frame, intrinsic brilliance is the brightness driving GTG curve corresponding to GTG to be carried out to integration generation the time.Within the time of a frame, integration is carried out to driving GTG, obtain the intrinsic brilliance of target frame, due to human eye the impression of a period of time interior focusing be during this period of time in average effect-human eye expectation value, and the intrinsic brilliance that the driving GTG after adjustment produces can meet human eye expectation value, the smear existed in picture handoff procedure can be eliminated.
Description
Technical field
The present invention relates to display technique, refer to a kind of method, GTG control device and the liquid crystal display that control GTG especially.
Background technology
Liquid crystal display (LCD, Liquid Crystal Display) is carried out in the process shown, and GTG represents by the most secretly to the stratum level of different brightness the brightest, and middle level is more, and the picture effect that can present is just finer and smoother.Liquid crystal response can cause the object of movement fast to occur smear slowly, this is because liquid crystal responds not exclusively in GTG transfer process, causes actual GTG different from target gray scale.The response time section of liquid crystal display is usually longer, therefore at show image---and in the process of especially dynamic image, the long meeting of response time section carrying out picture switching causes GTG to overturn not exclusively; If the GTG difference of continuous print two pictures is larger in transfer process, the partial information of original picture can be comprised in new picture, because the eyes of people are within a period of time, be the average effect in this period of time to the impression of light, therefore can form ghost (smear) defect.
In order to eliminate smear, normally improve the refreshing frequency of LCD, but this significantly can increase cost and technology difficulty; And the refresh rate of LCD has risen to 120Hz/240Hz, although this improves smear problem, but do not reach the display effect of traditional C RT technology.
There are the following problems for prior art: realizing image color accurately by improving the refreshing frequency of LCD, cannot eliminate smear completely, also can cause the inaccurate of color, such as, there will be the inaccurate of smear or dynamic color during display frame.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of method, GTG control device and the liquid crystal display that control GTG, for solving smear and the color of accurate video display.
For solving the problems of the technologies described above, embodiments of the invention provide a kind of method of control GTG of display, and display comprises multiple pixel; Method comprises: step one, obtains the brightness L0 of described pixel in present frame finish time; Step 2, according to the brightness L0 of described present frame finish time, obtains the driving GTG of described pixel in target frame; Wherein, described target frame is a rear frame of described present frame; Step 3, described driving GTG is exported in described target frame, described driving GTG makes described pixel equal to meet the object brightness L1 of the described target frame of human eye expectation value in the intrinsic brilliance of described target frame, and wherein said intrinsic brilliance is GTG curve that described driving GTG is corresponding carries out integration generation brightness to the time.
In described method, GTG curve corresponding for described driving GTG is carried out integration to the time and produces described pixel and specifically comprise in the intrinsic brilliance of described target frame: the initial time of the time span of integration is that target frame is when starting; The finish time of the time span of integration is the moment that described target frame terminates.
In described method, described display comprises multiple color display unit, and each described color display unit at least comprises three pixels corresponding respectively to red pure color component, green solid component and blue pure color component; The driving GTG of described color display unit for described in the superposition of driving GTG of at least three pixels.
In described method, before step 2, deposit a gray scale response look-up table in advance, the horizontal ordinate of gray scale response look-up table is the brightness L0 of described present frame finish time, and the ordinate of described gray scale response look-up table is the object brightness L1 of described target frame; The driving GTG corresponding with the brightness L0 of the finish time of present frame described in each and the object brightness L1 of described target frame is deposited among described gray scale response look-up table.
In described method, also comprise: step 4, according to brightness L0 and the brightness L2 of described driving GTG acquisition target frame finish time of present frame finish time; By the brightness L2 of described target frame finish time after the buffer memory of a frame length, export the brightness L0 of brightness L2 as new present frame finish time of described target frame finish time.
In described method, deposit the two look-up table of a gray scale response, the two look-up table of described gray scale response comprises the first look-up table and second look-up table; The horizontal ordinate of the first look-up table is the brightness L0 of present frame finish time, and ordinate is the object brightness L1 of target frame, deposits the driving GTG corresponding with the object brightness L1 of brightness L0 and described target frame described in each among the first look-up table; The horizontal ordinate of second look-up table is the brightness L0 of described present frame finish time, and ordinate is described driving GTG, deposits the brightness L2 of described target frame finish time among second look-up table.
A kind of GTG control device, comprising: frame processing unit, for obtaining the brightness L0 of pixel in present frame finish time; Search computing unit, for according to the brightness L0 of described pixel in described present frame finish time, obtain the driving GTG of described pixel in target frame, described driving GTG makes described pixel equal to meet the object brightness L1 of the described target frame of human eye expectation value in the intrinsic brilliance of described target frame, and wherein said intrinsic brilliance is GTG curve that described driving GTG is corresponding carries out integration generation brightness to the time; Wherein, described target frame is a rear frame of described present frame; Output unit, for exporting described driving GTG in described target frame.
In described device, display comprises multiple color display unit, and each described color display unit at least comprises three pixels corresponding respectively to red pure color component, green solid component and blue pure color component.
In described device, also comprise: singly show administrative unit, for depositing a gray scale response look-up table, the horizontal ordinate of described gray scale response look-up table is the brightness L0 of described present frame finish time, and the ordinate of described gray scale response look-up table is the object brightness L1 of described target frame; The driving GTG corresponding with the brightness L0 of present frame finish time described in each and the object brightness L1 of described target frame is deposited among described gray scale response look-up table.
In described device, also comprise: two table administrative unit, for depositing the two look-up table of a gray scale response, the two look-up table of described gray scale response comprises the first look-up table and second look-up table; The horizontal ordinate of the first look-up table is the brightness L0 of present frame finish time, and ordinate is the object brightness L1 of described target frame, deposits the driving GTG corresponding with the brightness L0 of present frame finish time described in each and the object brightness L1 of described target frame in table; The horizontal ordinate of second look-up table is the brightness L0 of described present frame finish time, and ordinate is described driving GTG, deposits the brightness L2 of described target frame finish time in table.
In described device, also comprise: buffer, for by the brightness L2 of described target frame finish time after the buffer memory of a frame length, export to described first look-up table and the described second look-up table brightness L0 as new present frame finish time.
A kind of liquid crystal display, comprise GTG control device, GTG control device comprises: frame processing unit, for obtaining the brightness L0 of pixel in present frame finish time; Search computing unit, for according to the brightness L0 of described pixel in described present frame finish time, obtain the driving GTG of described pixel in target frame, described driving GTG makes described pixel equal to meet the object brightness L1 of the described target frame of human eye expectation value in the intrinsic brilliance of described target frame, and wherein said intrinsic brilliance is GTG curve that described driving GTG is corresponding carries out integration generation brightness to the time; Wherein, described target frame is a rear frame of described present frame; Output unit, for exporting described driving GTG in described target frame.
In described liquid crystal display, comprise multiple color display unit, each described color display unit at least comprises three pixels corresponding respectively to red pure color component, green solid component and blue pure color component.
In described liquid crystal display, also comprise: singly show administrative unit, for depositing a gray scale response look-up table, the horizontal ordinate of described gray scale response look-up table is the brightness L0 of described present frame finish time, and the ordinate of described gray scale response look-up table is the object brightness L1 of described target frame; The driving GTG corresponding with the brightness L0 of present frame finish time described in each and the object brightness L1 of described target frame is deposited among described gray scale response look-up table.
In described liquid crystal display, also comprise: two table administrative unit, for depositing the two look-up table of a gray scale response, the two look-up table of described gray scale response comprises the first look-up table and second look-up table; The horizontal ordinate of the first look-up table is the brightness L0 of present frame finish time, and ordinate is the object brightness L1 of described target frame, deposits the driving GTG corresponding with the brightness L0 of present frame finish time described in each and the object brightness L1 of described target frame in table; The horizontal ordinate of second look-up table is the brightness L0 of described present frame finish time, and ordinate is described driving GTG, deposits the brightness L2 of described target frame finish time in table.
In described liquid crystal display, also comprise: buffer, for by the brightness L2 of described target frame finish time after the buffer memory of a frame length, export to described first look-up table and the described second look-up table brightness L0 as new present frame finish time.
The beneficial effect of technique scheme of the present invention is as follows: within the time of a frame, integration is carried out to driving GTG, obtain the intrinsic brilliance of target frame, due to human eye the impression of a period of time interior focusing be during this period of time in average effect, and the intrinsic brilliance that the driving GTG after adjustment produces can meet human eye expectation value, therefore, it is possible to eliminate the smear existed in picture handoff procedure, and make the color display of dynamic image more naturally fine and smooth.
Accompanying drawing explanation
Fig. 1 represents a kind of method flow schematic diagram controlling GTG in procedure for displaying;
Fig. 2 represents the principle of work schematic diagram controlling GTG;
Fig. 3 represents the principle of work schematic diagram one controlling GTG in the process of color display;
Fig. 4 represents the principle of work schematic diagram two controlling GTG in the process of color display;
Fig. 5 represents the principle of work schematic diagram of gray scale response look-up table;
Fig. 6 represents the principle of work schematic diagram of the two look-up table of gray scale response;
Fig. 7 represents the structural representation of GTG control device.
Embodiment
For making the technical problem to be solved in the present invention, technical scheme and advantage clearly, be described in detail below in conjunction with the accompanying drawings and the specific embodiments.
The present invention, according to the formation basic theory mechanism of LCD ghost, utilizes the process of liquid crystal response to carry out GTG conversion, to alleviate ghost, and the color of accurate video display.
The embodiment of the present invention provides a kind of method controlling GTG in procedure for displaying, is applied to liquid crystal display, and described liquid crystal display comprises multiple pixel; As shown in Figure 1, method comprises:
Step 101 (step one), obtains the brightness L0 of described pixel in present frame finish time;
Step 102 (step 2), according to the brightness L0 of described present frame finish time, obtains the driving GTG of described pixel in target frame; Wherein, described target frame is a rear frame of described present frame;
Step 103 (step 3), described driving GTG is exported in described target frame, described driving GTG makes described pixel equal to meet the object brightness L1 of the described target frame of human eye expectation value in the intrinsic brilliance of described target frame, and wherein said intrinsic brilliance is GTG curve that described driving GTG is corresponding carries out integration generation brightness to the time.
The technical scheme provided is provided, within the time of a frame, integration is carried out to driving GTG, obtain the intrinsic brilliance of target frame, due to human eye the impression of a period of time interior focusing be during this period of time in average effect, and the intrinsic brilliance that the driving GTG after adjustment produces can meet (equaling) human eye expectation value, therefore, it is possible to eliminate the smear existed in picture handoff procedure, and make the color display of dynamic image more naturally fine and smooth.
In a preferred embodiment, GTG curve corresponding for described driving GTG is carried out integration to the time to produce described pixel and specifically comprise in the intrinsic brilliance of described target frame:
The initial time of the time span of integration is the moment that target frame starts;
The finish time of the time span of integration is the moment that described target frame terminates.
Time span occupied by a frame is called frame length; The human eye expectation value that object brightness L1 meets in frame length specifically refers to: the eyes of people receive enough light in regular hour section can form understanding for an image, the light sent due to image is change, therefore the method calculating the light received normally carries out integration to the driving GTG in this time period, obtain the brightness driving GTG to produce, the unit of brightness is nit (nit).
In an application scenarios, 150 (60nit) are transformed into from 50 (5nit) for GTG, as shown in Figure 2, the GTG (Grey To Grey) of GTG 50 to 150 generally can be less than the frame length of a frame, brightness change procedure presents a curve, and brightness from 90% be transformed into 100% time can be longer.Because human eye is within a period of time, be the general effect-human eye expectation value of brightness interior during this period of time to the impression of light, in each frame length, as shown in the upper figure in Fig. 2, prior art is 5nit → 45nit → 55nit → 58nit → 60nit;
The technology that application the embodiment of the present application provides, as shown in the figure below in Fig. 2, in the frame length that the response process of liquid crystal is corresponding, when one shorter in m-sub-time interval, an enough large numerical value is elevated to by driving GTG by integral action, and, ensure within each sub-time interval of a frame length, keep driving GTG basically identical, that is, within each sub-time interval, brightness is from 5nit → 60nit → 60nit → 60nit → 60nit, ensure that the brightness that human eye is seen is accurately, eliminate motion blur phenomenon.
In a preferred embodiment, display comprises multiple color display unit, and each described color display unit at least comprises three pixels corresponding respectively to red pure color component, green solid component and blue pure color component;
The driving GTG of described color display unit for described in the superposition of driving GTG of at least three pixels.
For the pixel that each pure color component is corresponding, perform step 103, namely, in described response time section, respectively to red pure color component, the change procedure of the GTG of green solid component and blue pure color component carries out integration, obtain corresponding intrinsic brilliance R, intrinsic brilliance G and intrinsic brilliance B, these three intrinsic brilliances are in same color display unit, therefore for human eye, the intrinsic brilliance that this color display unit presents is intrinsic brilliance R, effect after intrinsic brilliance G and intrinsic brilliance B superposition, and intrinsic brilliance can meet the human eye expectation value in frame length.
In an application scenarios, as shown in Figure 3, in the process of liquid crystal display color display, the GTG of three primary colors RGB is converted to (50 of a rear frame by (50,50,50) of former frame, 100,150) in process, because prior art also exists difference to the process that each pure color component carries out GTG conversion, the synthesis color finally presented may be caused to occur deviation; Therefore the technology that the embodiment of the present invention provides is adopted, as shown in Figure 4, carry out integration to the driving GTG of each pure color component-red pure color component, green solid component and blue pure color component, the intrinsic brilliance formed after exporting integration is to pixel corresponding respectively in each color display unit of display:
For red pure color component, in response time section, owing to driving GTG to there is not change from 50 → 50, therefore do not need to carry out integration;
For green solid component, in response time section, owing to driving GTG from 50 → 100, therefore need to carry out integration in response time section, the brightness formed after integration should meet corresponding human eye expectation value;
For blue pure color component, in response time section, owing to driving GTG from 50 → 150, therefore need to carry out integration in response time section, the brightness formed after integration should meet corresponding human eye expectation value.
By above-mentioned integral process, ensure that the gray scale response of each pure color component is accurate, eliminate smear, realize the accurate display of synthesis color.
In a preferred embodiment, before step 2, deposit a gray scale response look-up table in advance, the horizontal ordinate of described gray scale response look-up table is the brightness L0 of described present frame finish time, and the ordinate of described gray scale response look-up table is the object brightness L1 of described target frame;
The driving GTG corresponding with the brightness L0 of the finish time of present frame described in each and the object brightness L1 of described target frame is deposited among described gray scale response look-up table.
In a preferred embodiment, also comprise:
Step 4, according to brightness L0 and the brightness L2 of described driving GTG acquisition target frame finish time of present frame finish time;
By the brightness L2 of described target frame finish time after the buffer memory of a frame length, export the brightness L0 of brightness L2 as new present frame finish time of described target frame finish time.
In an application scenarios, as shown in Figure 5, according to the look-up table that often kind of different liquid crystal display response measurement data genaration 256 row × 256 arrange, horizontal ordinate (columns) identifies the GTG of former frame, ordinate (line number) identifies the GTG of a rear frame that will show, and namely the data deposited in form corresponding to horizontal ordinate and ordinate point of crossing are the driving GTGs of the actual output after will changing; Former frame is herein present frame, and a rear frame is target frame.
If the GTG of former frame is 50, the GTG of a rear frame is 150, and in gray scale response look-up table, the data that the 150th row the 50th arranges are the driving GTG 170 after conversion;
If the GTG of former frame is 170, the GTG of a rear frame is 150, can find the 150th row in gray scale response look-up table, and 170 data arranged are the driving GTG 145 after conversion, in like manner can carry out other similar transfer processes.
During hardware implementing gray scale response look-up table, the gray scale response look-up table of different-format can be adopted; Such as, for the hardware that arithmetic capability is less, adopt the gray scale response look-up table of 16 × 16, middle data then adopt interpolation to generate, the principle generating interpolation is: interpolation continuous function on the basis of discrete data, makes to estimate the data of the approximate value at other some places as centre according to continuous function.
In a preferred embodiment, deposit the two look-up table of a gray scale response, the two look-up table of gray scale response comprises the first look-up table and second look-up table;
The horizontal ordinate of the first look-up table is the brightness L0 of present frame finish time, and ordinate is the object brightness L1 of target frame, deposits the driving GTG corresponding with the object brightness L1 of brightness L0 and described target frame described in each among the first look-up table;
The horizontal ordinate of second look-up table is the brightness L0 of described present frame finish time, and ordinate is described driving GTG, deposits the brightness L2 of described target frame finish time among second look-up table.
In an application scenarios, the GTG of former frame not only affects the GTG of target frame, but also the next frame of target frame can be had influence on, as shown in Figure 6, therefore want to correct more accurately, need to adopt the two look-up table of gray scale response to carry out GTG conversion, the two look-up table of gray scale response comprises the first look-up table and second look-up table, its principle of work as shown in Figure 6, comprising:
Among the first look-up table, horizontal ordinate is the brightness L0 of former frame finish time, ordinate is the object brightness L1 of target frame, deposit the driving GTG Gray_out corresponding with the brightness L0 of each former frame finish time and the object brightness L1 of target frame in table, what therefore the first look-up table exported is drive GTG; Former frame is herein described present frame, and a rear frame is described target frame;
Drive GTG Gray_out to output to LCD through source printed circuit board (Source PCB, Source Printed Circuit Board), substitute original GTG of pixel in LCD;
In target frame, perform integration to driving GTG Gray_out, the intrinsic brilliance formed after integration should meet corresponding human eye expectation value, and due to the existence of a variety of causes, intrinsic brilliance also likely not exclusively meets human eye expectation value.
In the finish time of target frame, GTG Gray_out is driven to be this target frame GTG at this very moment, due to the and then next frame below of target frame, therefore be also the driving GTG of next frame start time, in other words, the driving GTG of former frame is to target frame, and next frame all creates impact.
After the first look-up table exports driving GTG Gray_out, drive GTG Gray_out to enter second look-up table, the ordinate of second look-up table have recorded this driving GTG Gray_out, and second look-up table exports the brightness L2 of the finish time of target frame.
The brightness L2 of the finish time of target frame is by timer/counter control register (TCON, Timer Control Register) buffer memory frame length, finish time of target frame or finish time a little earlier before, L2 is outputted in the first look-up table and second look-up table.
In the first look-up table, L2 replaces the brightness L0 of old present frame finish time;
In second look-up table, L2 replaces the brightness L0 of old present frame finish time.
Adopt in the process of the two look-up table of hardware implementing gray scale response, the two look-up table of gray scale response can have different forms; Such as, for the hardware that arithmetic capability is less, adopt the two look-up table of the gray scale response of 16 × 16, the intermediate data be not documented on the two look-up table of gray scale response adopts difference to generate.
Application gray scale response look-up table or the two look-up table of gray scale response, the driving GTG after conversion is adopted to carry out integration formation and control the general effect of brightness in a frame length, ensure that the final intrinsic brilliance formed meets human eye expectation value, make the colour brightness of dynamic image can accurate stable.
The embodiment of the present invention provides a kind of GTG control device, and liquid crystal display comprises multiple pixel, and GTG control device as shown in Figure 7, comprising:
Frame processing unit 701, for obtaining the brightness L0 of pixel in present frame finish time;
Search computing unit 702, for according to the brightness L0 of described pixel in described present frame finish time, obtain the driving GTG of described pixel in target frame, described driving GTG makes described pixel equal to meet the object brightness L1 of the described target frame of human eye expectation value in the intrinsic brilliance of described target frame, and wherein said intrinsic brilliance is GTG curve that described driving GTG is corresponding carries out integration generation brightness to the time; Wherein, described target frame is a rear frame of described present frame;
Output unit 703, for exporting described driving GTG in described target frame.
Wherein, produce described pixel specifically comprise driving GTG curve corresponding to GTG to carry out integration to the time in the intrinsic brilliance of described target frame:
The initial time of the time span of integration is the moment that target frame starts; The finish time of the time span of integration is the moment that described target frame terminates.
In a preferred embodiment, display comprises multiple color display unit, and each color display unit at least comprises three pixels corresponding respectively to red pure color component, green solid component and blue pure color component.
For this reason, first integral module, in described response time section, calls the change procedure of described integral unit to the GTG of red pure color component and carries out integration;
Second integral module, in described response time section, calls described integral unit and carries out integration to the change procedure of the GTG of green solid component;
Third integral module, in described response time section, calls the change procedure of described integral unit to the GTG of blue pure color component and carries out integration.
In a preferred embodiment, also comprise:
Singly show administrative unit, for depositing a gray scale response look-up table, the horizontal ordinate of described gray scale response look-up table is the brightness L0 of described present frame finish time, and the ordinate of described gray scale response look-up table is the object brightness L1 of described target frame;
The driving GTG corresponding with the brightness L0 of present frame finish time described in each and the object brightness L1 of described target frame is deposited among described gray scale response look-up table.
In a preferred embodiment, also comprise:
Two table administrative unit, for depositing the two look-up table of a gray scale response, the two look-up table of described gray scale response comprises the first look-up table and second look-up table;
The horizontal ordinate of the first look-up table is the brightness L0 of present frame finish time, and ordinate is the object brightness L1 of described target frame, deposits the driving GTG corresponding with the brightness L0 of present frame finish time described in each and the object brightness L1 of described target frame in table;
The horizontal ordinate of second look-up table is the brightness L0 of described present frame finish time, and ordinate is described driving GTG, deposits the brightness L2 of described target frame finish time in table.
In a preferred embodiment, also comprise:
Buffer, for by the brightness L2 of target frame finish time after the buffer memory of a frame length, export to the first look-up table and the described second look-up table brightness L0 as new present frame finish time.
The embodiment of the present invention provides a kind of liquid crystal display, and liquid crystal display comprises multiple pixel, also comprises GTG control device, and GTG control device as shown in Figure 7, comprising:
Frame processing unit 701, for obtaining the brightness L0 of pixel in present frame finish time;
Search computing unit 702, for according to the brightness L0 of described pixel in described present frame finish time, obtain the driving GTG of described pixel in target frame, described driving GTG makes described pixel equal to meet the object brightness L1 of the described target frame of human eye expectation value in the intrinsic brilliance of described target frame, and wherein said intrinsic brilliance is GTG curve that described driving GTG is corresponding carries out integration generation brightness to the time; Wherein, described target frame is a rear frame of described present frame;
Output unit 703, for exporting described driving GTG in described target frame.
Wherein, produce described pixel specifically comprise driving GTG curve corresponding to GTG to carry out integration to the time in the intrinsic brilliance of described target frame:
The initial time of the time span of integration is the moment that target frame starts; The finish time of the time span of integration is the moment that described target frame terminates.
Advantage after employing this programme is: in response time section, integration is carried out to driving GTG and obtains intrinsic brilliance, because human eye is within a period of time, to the impression of light be during this period of time in brightness general effect, and the intrinsic brilliance driving GTG to produce can meet human eye expectation value, therefore, it is possible to eliminate the smear existed in picture handoff procedure.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the prerequisite not departing from principle of the present invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. a method for the control GTG of display, described display comprises multiple pixel; It is characterized in that, described method comprises:
Step one, obtains the brightness L0 of described pixel in present frame finish time;
Step 2, according to the brightness L0 of described present frame finish time and the object brightness L1 of target frame, obtains the driving GTG of described pixel in target frame; Wherein, described target frame is a rear frame of described present frame;
Step 3, described driving GTG is exported in described target frame, described driving GTG makes described pixel equal to meet the object brightness L1 of the described target frame of human eye expectation value in the intrinsic brilliance of described target frame, and wherein said intrinsic brilliance is GTG curve that described driving GTG is corresponding carries out integration generation brightness to the time;
Step 4, according to brightness L0 and the brightness L2 of described driving GTG acquisition target frame finish time of present frame finish time; By the brightness L2 of described target frame finish time after the buffer memory of a frame length, export the brightness L0 of brightness L2 as new present frame finish time of described target frame finish time.
2. method according to claim 1, is characterized in that, GTG curve corresponding for described driving GTG is carried out integration to the time and produces described pixel and specifically comprise in the intrinsic brilliance of described target frame:
The initial time of the time span of integration is the moment that target frame starts;
The finish time of the time span of integration is the moment that described target frame terminates.
3. method according to claim 1, is characterized in that, described display comprises multiple color display unit, and each described color display unit at least comprises three pixels corresponding respectively to red pure color component, green solid component and blue pure color component;
The driving GTG of described color display unit for described in the superposition of driving GTG of at least three pixels.
4. method according to claim 1, it is characterized in that, before step 2, deposit a gray scale response look-up table in advance, the horizontal ordinate of described gray scale response look-up table is the brightness L0 of described present frame finish time, and the ordinate of described gray scale response look-up table is the object brightness L1 of described target frame;
The driving GTG corresponding with the brightness L0 of the finish time of present frame described in each and the object brightness L1 of described target frame is deposited, described gray scale response look-up table specifically the first look-up table among described gray scale response look-up table.
5. method according to claim 1, is characterized in that, deposits the two look-up table of a gray scale response, and the two look-up table of described gray scale response comprises the first look-up table and second look-up table;
The horizontal ordinate of the first look-up table is the brightness L0 of present frame finish time, and ordinate is the object brightness L1 of target frame, deposits the driving GTG corresponding with the object brightness L1 of brightness L0 and described target frame described in each among the first look-up table;
The horizontal ordinate of second look-up table is the brightness L0 of described present frame finish time, and ordinate is described driving GTG, deposits the brightness L2 of described target frame finish time among second look-up table.
6. a GTG control device, is characterized in that, comprising:
Frame processing unit, for obtaining the brightness L0 of pixel in present frame finish time;
Search computing unit, for according to the brightness L0 of described pixel in described present frame finish time and the object brightness L1 of target frame, obtain the driving GTG of described pixel in target frame, described driving GTG makes described pixel equal to meet the object brightness L1 of the described target frame of human eye expectation value in the intrinsic brilliance of described target frame, and wherein said intrinsic brilliance is GTG curve that described driving GTG is corresponding carries out integration generation brightness to the time; Wherein, described target frame is a rear frame of described present frame;
Output unit, for exporting described driving GTG in described target frame;
Buffer, for obtaining the brightness L2 of target frame finish time according to the brightness L0 of present frame finish time and described driving GTG, by the brightness L2 of described target frame finish time after the buffer memory of a frame length, export to the first look-up table and the second look-up table brightness L0 as new present frame finish time.
7. device according to claim 6, is characterized in that,
Display comprises multiple color display unit, and each described color display unit at least comprises three pixels corresponding respectively to red pure color component, green solid component and blue pure color component.
8. device according to claim 6, is characterized in that, also comprises:
Two table administrative unit, for depositing the two look-up table of a gray scale response, the two look-up table of described gray scale response comprises the first look-up table and second look-up table;
The horizontal ordinate of the first look-up table is the brightness L0 of present frame finish time, and ordinate is the object brightness L1 of described target frame, deposits the driving GTG corresponding with the brightness L0 of present frame finish time described in each and the object brightness L1 of described target frame in table;
The horizontal ordinate of second look-up table is the brightness L0 of described present frame finish time, and ordinate is described driving GTG, deposits the brightness L2 of described target frame finish time in table.
9. a liquid crystal display, is characterized in that, comprises as the GTG control device in claim 6-8 as described in any one.
Priority Applications (1)
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| CN104423125B (en) * | 2013-08-29 | 2016-03-09 | 台达电子工业股份有限公司 | GTG control method and optical projection system |
| CN103680448B (en) * | 2013-12-11 | 2015-07-01 | 深圳市华星光电技术有限公司 | Method for calculating overdrive target value |
| CN105448233B (en) * | 2014-08-26 | 2018-06-26 | 上海和辉光电有限公司 | The driving method and organic LED display device of OLED pixel |
| CN104900209A (en) * | 2015-06-29 | 2015-09-09 | 深圳市华星光电技术有限公司 | Overdriven target value calculating method based on sub-pixel signal bright-dark switching |
| CN107799066B (en) | 2017-11-15 | 2020-04-07 | 京东方科技集团股份有限公司 | Compensation method of display panel, driving device, display device and storage medium |
| CN111445826A (en) * | 2020-03-30 | 2020-07-24 | 上海大学 | Gray scale modulation device, method and system based on four-input constant current source |
| CN112017609B (en) * | 2020-09-03 | 2021-07-23 | Tcl华星光电技术有限公司 | Control method of display panel, display panel and display device |
| CN112863446B (en) * | 2021-01-22 | 2022-06-17 | 京东方科技集团股份有限公司 | Display compensation module, display compensation method and display device |
| CN112767869A (en) * | 2021-01-28 | 2021-05-07 | 昆山国显光电有限公司 | Method and device for evaluating display effect of display panel |
| CN114882839B (en) * | 2022-06-06 | 2023-05-19 | 武汉天马微电子有限公司 | Display method of display device |
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