CN101739964A - Driving method of backlight module and display - Google Patents
Driving method of backlight module and display Download PDFInfo
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- CN101739964A CN101739964A CN200810174836A CN200810174836A CN101739964A CN 101739964 A CN101739964 A CN 101739964A CN 200810174836 A CN200810174836 A CN 200810174836A CN 200810174836 A CN200810174836 A CN 200810174836A CN 101739964 A CN101739964 A CN 101739964A
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Abstract
The invention discloses a driving method of a backlight module and a display. The driving method of the backlight module comprises the following steps of: firstly, respectively sequentially driving a first color light source, a second color light source and a third color light source in a first subframe period, a second subframe period and a third subframe period of a frame period; and then controlling the second color light source to emit second color light in a color overlapping time interval of the first subframe period. The driving method of the display comprises the following steps of: firstly, respectively controlling the light transmittance of a liquid crystal layer to be enhanced with the increase of time till the light transmittance of the liquid crystal layer is equal to target light transmittance in the first subframe period, the second subframe period and the third subframe period; and then carrying out the driving method of the backlight module.
Description
Technical field
The present invention relates to a kind of driving method and its application of backlight module, particularly the driving method of the backlight module of look preface formula (Colorsequential) display.
Background technology
Along with day by day improving of science and technology, LCD has become article indispensable among the human lives.LCD is broadly divided into two kinds.Wherein a kind of for having the conventional liquid crystal of colored filter (Color filter), another kind of then be the color sequential liquid crystal display of netrual colour optical filter.
In having the LCD of colored filter, each pixel is made of three sub-pixels, and these three sub-pixels correspond respectively to the red, green and blue colo(u)r filter.Utilize this three-colour filter, the light that backlight can be provided is filtered into red, green and blue coloured light, utilizes liquid crystal suitably to adjust the gray scale of three primary colors light again, can make display demonstrate various colors thus.
See figures.1.and.2 simultaneously, Figure 1 shows that the STRUCTURE DECOMPOSITION figure of known color sequential liquid crystal display 10, Figure 2 shows that the structural representation of liquid crystal panel 16.Color sequential liquid crystal display 10 comprises backlight module 12, light guide plate 14 and liquid crystal panel 16, and wherein liquid crystal panel includes common electrode 16a, liquid crystal layer 16b, pixel cell 16c, source electrode drive circuit 16d and gate driver circuit 16e.Each pixel cell 16c is to having red light source 12a, blue-light source 12b and green light source 12c.Color sequential liquid crystal display 10 demonstrates redness, blueness and green in regular turn in a frame time (frame time).Utilize the persistence of vision phenomenon of human eye, can make display 10 demonstrate various colors.
Because color sequential liquid crystal display 10 has and needn't use colored filter can show various colors, under same size, its resolution can be three times of general display, causes color sequential liquid crystal display to be subjected to market gradually and payes attention to.Yet color sequential liquid crystal display must use a considerable amount of LED wafers to be used as backlight in order to demonstrate beautiful color, and uses look preface method to come the display color picture, is easy to generate colour break-up (color break-up) phenomenon.
Under ideal state, the three image colour field light stimulus that coloured image is included all project the pairing same position of each pixel on the retina, so the color information of each pixel is three image colour fields continuous integrations in time.But when observing dynamic image owing to the user, at this moment main eye movement is the action of carrying out trace (eye tracking) consciously along movement direction of object, therefore the user can observe the colour break-up phenomenon, and for example: the edge of object can form the colour band arrangement in image.
The colour break-up phenomenon also has research report to point out except reducing ornamental quality, after watching the field sequence type display for a long time, can cause dizzy sensation.Therefore, the driving method of a kind of backlight module of needs and display improves the colour break-up phenomenon of known color sequential liquid crystal display.
Summary of the invention
Therefore, one aspect of the present invention is to provide a kind of driving method of backlight module.
Another aspect of the present invention is to provide a kind of driving method of LCD.
According to one embodiment of present invention, in the driving method of this backlight module, at first, in first frame period, in first period of sub-frame, second period of sub-frame and the 3rd period of sub-frame, order drives first color light source, second color light source and three-color light source respectively respectively.Then, in the first color overlapping period in first period of sub-frame, control second color light source to send second coloured light.
According to another embodiment of the present invention, in the driving method of this display, at first, in first frame period, in first period of sub-frame, second period of sub-frame and the 3rd period of sub-frame, order drives first color light source, second color light source and three-color light source respectively respectively.Then, respectively in first period of sub-frame, second period of sub-frame and the 3rd period of sub-frame, the liquid crystal layer transmittance of control liquid crystal layer, make the liquid crystal layer transmittance increase and increase along with the time, reach target transmission up to the liquid crystal layer transmittance, and make first period of sub-frame, second period of sub-frame and the 3rd period of sub-frame correspond respectively to the liquid crystal layer light transmittance curve.Then, in the first color overlapping period in first period of sub-frame, control second color light source to send second coloured light with first brightness value, wherein the first color overlapping period is corresponding to the first light transmittance curve section of liquid crystal layer light transmittance curve, and this first brightness value is the continuous integration value of first intensity level to the first light transmittance curve section.
Description of drawings
For above-mentioned and other purpose of the present invention, feature and advantage can be become apparent more, below especially exemplified by preferred embodiment, and in conjunction with the accompanying drawings, be described in detail below:
Figure 1 shows that the STRUCTURE DECOMPOSITION figure of known color sequential liquid crystal display;
Figure 2 shows that the structural representation of liquid crystal panel;
Figure 3 shows that backlight open-interval sequential synoptic diagram according to an embodiment of the invention;
Figure 4 shows that the schematic flow sheet of the driving method of backlight module according to an embodiment of the invention;
Figure 5 shows that backlight open-interval sequential synoptic diagram according to an embodiment of the invention;
Figure 6 shows that the schematic flow sheet of the driving method of backlight module according to an embodiment of the invention;
Figure 7 shows that the synoptic diagram of liquid crystal transmittance curve according to an embodiment of the invention;
Figure 8 shows that the function block diagram of color sequential liquid crystal display according to an embodiment of the invention.
[primary clustering symbol description]
10: color sequential liquid crystal display 12: backlight module
12a: red light source 12b: blue-light source
12c: green light source 14: light guide plate
16: liquid crystal panel 16a: common electrode
16b: liquid crystal layer 16c: pixel cell
16d: source electrode drive circuit 16e: gate driver circuit
100: backlight module driving method 102: frame period
102a: period of sub-frame 102b: period of sub-frame
102c: period of sub-frame 104: frame period
104a: period of sub-frame 104b: period of sub-frame
104b: period of sub-frame 104c: period of sub-frame
110: mass-tone controlled step 120: the colour mixture controlled step
130: colour mixture controlled step 140: the mass-tone controlled step
150: colour mixture controlled step 160: the colour mixture controlled step
170: mass-tone controlled step 180: the colour mixture controlled step
190: colour mixture controlled step 200: the color overlapping period
201: color overlapping period 202: the color overlapping period
204: color overlapping period 206: the color overlapping period
208: color overlapping period 210: the color overlapping period
212: color overlapping period 214: the color overlapping period
216: color overlapping period 218: the color overlapping period
220: color overlapping period 300: the backlight module driving method
310: mass-tone controlled step 320: the colour mixture controlled step
330: colour mixture controlled step 340: the mass-tone controlled step
350: colour mixture controlled step 360: the colour mixture controlled step
370: mass-tone controlled step 380: the colour mixture controlled step
390: colour mixture controlled step 400: the liquid crystal transmittance curve
LT: default transmittance C1: light transmittance curve section
C2: light transmittance curve section C3: light transmittance curve section
C4: light transmittance curve section 500: color sequential liquid crystal display
510: time schedule controller 512a: the look timing control unit
512b: green timing control unit 512c: blue timing control unit
514a: storage device 514b: storage device
514c: storage device 516: transmission interface
520: gate drivers 530: source electrode driver
540: liquid crystal panel 550: light source drive device
560: light source 560a: red light source
560b: green light source 560c: blue-light source
T
1: the time section T
2: the time section
T
3: the time section T
4: the time section
Embodiment
Simultaneously with reference to Fig. 3 and Fig. 4, Figure 3 shows that backlight open-interval sequential synoptic diagram according to the embodiment of the invention, Figure 4 shows that wherein each color light source has preset strength (intensity) value according to the schematic flow sheet of the driving method 100 of the backlight module of the embodiment of the invention.In Fig. 3, the frame period 102, it represented that this frame shows the required time corresponding to a frame of image.Frame period 102 can be divided into three period of sub-frame 102a, 102b and 102c on time domain.In driving method 100, at first carry out mass-tone controlled step 110, be used as mass-tone to control first color light source.In mass-tone controlled step 110, the control backlight module sends first coloured light in period of sub-frame 102a, and for example red light, so period of sub-frame 102a was the first dice frame period, in order to show first color.Then, carry out colour mixture controlled step 120, be used as colour mixture to control second color light source.In colour mixture controlled step 120, in color overlapping period 200, send second coloured light, for example green light at period of sub-frame 102a inner control backlight module.Then, carry out colour mixture controlled step 130, be used as colour mixture to control three-color light source.In colour mixture controlled step 130, in color overlapping period 201, send the 3rd coloured light at period of sub-frame 102a inner control backlight module, blue light for example, wherein color overlapping period 201 is identical with color overlapping period 200.Can see that in cycle 102a the time of backlight module in the whole cycle is all sent first coloured light, and a bit of time that only closes to an end in the cycle is sent second coloured light and the 3rd coloured light.
Then, carry out mass-tone controlled step 140, be used as mass-tone to control second color light source.In mass-tone controlled step 140, the control backlight module send second coloured light, so period of sub-frame 102b was the second dice frame period, in order to show second color in period of sub-frame 102b.Then, carry out colour mixture controlled step 150, be used as colour mixture to control three-color light source.In colour mixture controlled step 150, in color overlapping period 202, send the 3rd coloured light at period of sub-frame 102b inner control backlight module.Then, carry out colour mixture controlled step 160, be used as colour mixture to control first color light source.In colour mixture controlled step 160, in color overlapping period 204, send first coloured light at period of sub-frame 102b inner control backlight module.Then, carry out mass-tone controlled step 170.Similarly, can see in cycle 102b that the time of backlight module in the whole cycle is all sent second coloured light, and a bit of time that only closes to an end in the cycle is sent first coloured light and the 3rd coloured light.
Then, carry out mass-tone controlled step 170, be used as mass-tone to control three-color light source.In mass-tone controlled step 170, the control backlight module send the 3rd coloured light, so period of sub-frame 102c was the 3rd dice frame period, in order to show the 3rd color in period of sub-frame 102c.Then, carry out colour mixture controlled step 180, be used as colour mixture to control second color light source.In colour mixture controlled step 180, in color overlapping period 206, send second coloured light at period of sub-frame 102c inner control backlight module.Then, carry out colour mixture controlled step 190, be used as colour mixture to control first color light source.In colour mixture controlled step 190, in color overlapping period 208, send first coloured light at period of sub-frame 102c inner control backlight module.Similarly, can see in cycle 102c that the time of backlight module in the whole cycle is all sent the 3rd coloured light, and a bit of time that only closes to an end in the cycle is sent first coloured light and second coloured light.
By above explanation as can be known, in the present embodiment, the red light source of backlight module is not only opened in the frame period at first dice, also opens in the frame period at second look and the 3rd dice, and keeps an of short duration period.By increase the opening time of red light source in the frame period 102, present embodiment can use the red backlight than known technology smaller amounts to reach same brightness effects.Similarly, the green light of present embodiment and blue light are also opened in each period of sub-frame, and to increase blue and green light brightness, thus, present embodiment can use than known technology blueness and green light source still less and reach same brightness effects.
In addition, because present embodiment is opened other color momently at each mass-tone Duan Zhongjun, be unlikely to make a certain color complete obiteration, so the colour break-up effect can obtain significant improvement.
Simultaneously, Figure 5 shows that backlight open-interval sequential synoptic diagram, Figure 6 shows that schematic flow sheet according to the driving method 300 of the backlight module of the embodiment of the invention according to the embodiment of the invention with reference to Fig. 5 and Fig. 6.In Fig. 5, the frame period 104 is corresponding to another frame of image, and can be divided into three period of sub-frame 104a, 104b and 104c on time domain.In driving method 300, at first carry out mass-tone controlled step 310, be used as mass-tone to control first color light source.In mass-tone controlled step 310, the control backlight module sends first coloured light in period of sub-frame 104a, and for example red light, so period of sub-frame 104a was the first dice frame period, in order to show first color.Then, carry out colour mixture controlled step 320 and be used as colour mixture to control second color light source.In colour mixture controlled step 320, in color overlapping period 210, send second coloured light, for example green light at period of sub-frame 104a inner control backlight module.Then, carry out colour mixture controlled step 330, be used as colour mixture to control three-color light source.In colour mixture controlled step 330, in color overlapping period 212, send the 3rd coloured light, for example blue light at period of sub-frame 104a inner control backlight module.Can see that in cycle 104a the time of backlight module in the whole cycle is all sent first coloured light, and only a bit of time in the cycle is sent second coloured light and the 3rd coloured light.
Then, carry out mass-tone controlled step 340, be used as mass-tone to control second color light source.In mass-tone controlled step 340, the control backlight module send second coloured light, so period of sub-frame 104b was the second dice frame period, in order to show second color in period of sub-frame 104b.Then, carry out colour mixture controlled step 350, be used as colour mixture to control three-color light source.In colour mixture controlled step 350, in color overlapping period 214, send the 3rd coloured light at period of sub-frame 104b inner control backlight module.Then, carry out colour mixture controlled step 360 and be used as colour mixture to control first color light source.In colour mixture controlled step 360, in color overlapping period 216, send first coloured light at period of sub-frame 104b inner control backlight module.Similarly, can see in cycle 104b that the time of backlight module in the whole cycle is all sent second coloured light, and only a bit of time in the cycle is sent first coloured light and the 3rd coloured light.
Then, carry out mass-tone controlled step 370 and be used as mass-tone to control three-color light source.In mass-tone controlled step 370, the control backlight module send the 3rd coloured light, so period of sub-frame 104c was the 3rd dice frame period, in order to show the 3rd color in period of sub-frame 104c.Then, carry out colour mixture controlled step 380, be used as colour mixture to control second color light source.In colour mixture controlled step 380, in color overlapping period 218, send second coloured light at period of sub-frame 104c inner control backlight module.Then, carry out colour mixture controlled step 390 and be used as colour mixture to control first color light source.In colour mixture controlled step 390, in color overlapping period 220, send first coloured light at period of sub-frame 104c inner control backlight module.Similarly, can see in cycle 104c that the time of backlight module in the whole cycle is all sent the 3rd coloured light, and only a bit of time in the cycle is sent first coloured light and second coloured light.
In the present embodiment, between the border of color overlapping period 210 and period of sub-frame 104a, has the blank time section T
1And T
2, therefore for second coloured light, because second coloured light is cut into the time section T at the blank time section of period of sub-frame 104a
1And T
2, make the blank time section of second coloured light be difficult for being discovered by human eye.Similarly, between the border of color overlapping period 212 and period of sub-frame 104a, has the time section T
3And T
4, therefore for the 3rd coloured light, because the 3rd coloured light is cut into the time section T at the blank time section of period of sub-frame 104a
3And T
4, make the blank time section of the 3rd coloured light be difficult for being discovered by human eye.
As shown in the above description, present embodiment is to utilize the color overlap section that the continuous blank time section of script is cut into two discontinuous blank time sections, to improve the colour break-up effect.
With reference to Fig. 7, it is depicted as the synoptic diagram according to the liquid crystal transmittance curve 400 of the embodiment of the invention, and wherein the fluorescent lifetime of each coloured light and the product of backlight intensity are represented in the shadow region.In the present embodiment, liquid crystal carries out a switch motion in each period of sub-frame, and wherein the transmittance of liquid crystal increased and increases along with the time, reaches default transmittance LT up to the transmittance of liquid crystal.Therefore, all to a light transmittance curve section should be arranged, this light transmittance curve section is the part of light transmittance curve 400 to each color overlapping period.For example: in period of sub-frame 102b, color overlapping period 204 is corresponding to light transmittance curve section C1; Color overlapping period 202 is corresponding to light transmittance curve section C2, and similarly, in period of sub-frame 102b, color overlapping period 216 is corresponding to light transmittance curve section C3; Color overlapping period 214 is corresponding to light transmittance curve section C4.
Because the transmittance of liquid crystal can influence the brightness value (brightness) of each color, therefore in period of sub-frame 102b, the first colour brightness value equals the continuous integration value of the first color of light intensity to light transmittance curve section C1, and the 3rd colour brightness equals the continuous integration value of the 3rd color of light intensity to light transmittance curve section C2.Similarly, in period of sub-frame 104b, the first colour brightness value equals the continuous integration value of the first color of light intensity to light transmittance curve section C3, and the 3rd colour brightness equals the continuous integration value of the 3rd color of light intensity to light transmittance curve section C4.
The unbalance situation of brightness occurs for fear of first color, the first colour brightness value in period of sub-frame 102b and 104b must equate.By suitably adjusting the size of color overlapping period 204 and 202, can change the continuous integration value of light intensity value and light transmittance curve section, make the first colour brightness value of period of sub-frame 102b and 104b equate.Similarly,, can change the continuous integration value of light intensity value and light transmittance curve section, make the 3rd colour brightness value of period of sub-frame 102b and 104b equate by suitably adjusting the size of color overlapping period 216 and 214.In addition, for the purpose of convenience of calculation, the intensity level of first color, second color and the 3rd color can be designed to equate, can simplify the calculating of brightness value thus, yet present embodiment is not limited to this.
It should be noted that present embodiment is is that example illustrates how to reach luminance balance with first color and the 3rd color by inference, yet for second color, its luminance balance method can be known also easily by present embodiment.
With reference to Fig. 8, it is depicted as the function block diagram according to the color sequential liquid crystal display 500 of the embodiment of the invention.Color sequential liquid crystal display 500 comprises time schedule controller 510, gate drivers 520, source electrode driver 530, liquid crystal panel 540, light source drive device 550 and light source 560, and wherein light source 560 includes red light source 560a, green light source 560b and blue-light source 560c.Time schedule controller 510 is used for controlling light source drive device 550 according to red grey scale signal Sr, green grey scale signal Sg and blue grey scale signal Sb, emit beam to liquid crystal panel 540 with driving light source 560, simultaneously also control gate driver 520 and source electrode driver 530 drive pixel (not shown) in the liquid crystal panel 540, so that the light throughput of these pixels control light sources 560 shows the colour picture of different gray scales.
Time schedule controller 510 includes red timing control unit 512a, green timing control unit 512b, blue timing control unit 512c, storage device 514a, 514b and 514c and transmission interface 516, and wherein storage device 514a stores red pulse width look-up table; Storage device 514b stores green pulse width look-up table; Storage device 514c blue pulse width look-up table.After red timing control unit 512a receives red grey scale signal, can output control signals to storage device 514a, make storage device 514a find out suitable red pulse width and export light source drive device 550 to according to red pulse width look-up table.Similarly, after green timing control unit 512a and blue timing control unit 512c receive green grey scale signal and blue grey scale signal respectively, can output control signals to storage device 514b and 514c respectively, so that storage device 514b and 514c find out suitable green pulse width and blue pulse width according to green pulse width look-up table and blue pulse width look-up table, and export light source drive device 550 to.550 red pulse width, green pulse width and blue pulse width of being exported according to storage device 514a, 514b and 514c of light source drive device are carried out driving method 100 or 200, with the luminous dutycycle (duty cycle) of control red light source 560a, green light source 560b and blue-light source 560c.
Storage device 514a, 514b and 514c that it should be noted that present embodiment also can be merged into a storage device, so can save the manufacturing cost of LCD 500.
Though the present invention is open by above embodiment; yet it is not to be used to limit the present invention; any those of ordinary skill in the art; without departing from the spirit and scope of the present invention; all can make various modifications and modification, so protection scope of the present invention should be as the criterion with the scope that appended claims defines.
Claims (12)
1. backlight module driving method, be used to drive backlight module, described backlight module comprises first color light source that is used to send first coloured light, is used to send second color light source of second coloured light and the three-color light source that is used to send the 3rd coloured light, and described backlight module driving method comprises at least:
In first frame period, in first period of sub-frame, second period of sub-frame and the 3rd period of sub-frame, order drives described first color light source, described second color light source and described three-color light source respectively respectively; And
In the first color overlapping period in described first period of sub-frame, control described second color light source to send described second coloured light, wherein said second coloured light has first brightness value.
2. backlight module driving method according to claim 1 also comprises:
In the second color overlapping period in described first period of sub-frame, control described three-color light source to send described the 3rd coloured light, wherein said the 3rd coloured light has second brightness value.
3. backlight module driving method according to claim 2 also comprises:
In second frame period, in the 4th period of sub-frame, the 5th period of sub-frame and the 6th period of sub-frame, order drives described first color light source, described second color light source and described three-color light source respectively respectively; And
In the 3rd color overlapping period in described the 4th period of sub-frame, control described second color light source to send described second coloured light, wherein said second coloured light has described first brightness value.
4. backlight module driving method according to claim 3 also comprises:
In the 4th color overlapping period in described the 4th period of sub-frame, control described three-color light source to send described the 3rd coloured light, wherein said the 3rd coloured light has described second brightness value.
5. backlight module driving method according to claim 4, wherein, described the 3rd color overlapping period is not equal to described the 4th color overlapping period.
6. backlight module driving method according to claim 3, wherein, the described second color overlapping period is not equal to the described first color overlapping period.
7. backlight module driving method according to claim 1, wherein, described first coloured light is red light, described second coloured light is green light, and described the 3rd coloured light is blue light.
8. backlight module driving method according to claim 1, wherein, described first coloured light, described second coloured light are identical with the intensity level of described the 3rd coloured light.
9. the driving method of a display, described display comprises backlight module and liquid crystal layer, described backlight module comprises first color light source that is used to send first coloured light, is used to send second color light source of second coloured light and the three-color light source that is used to send the 3rd coloured light, wherein said first coloured light, described second coloured light and described the 3rd coloured light have the first preset strength value, the second preset strength value and the 3rd preset strength value respectively, and described driving method comprises at least:
In first frame period, in first period of sub-frame, second period of sub-frame and the 3rd period of sub-frame, order drives described first color light source, described second color light source and described three-color light source respectively respectively;
Respectively in described first period of sub-frame, described second period of sub-frame and described the 3rd period of sub-frame, control the liquid crystal layer transmittance of described liquid crystal layer, make described liquid crystal layer transmittance increase and increase along with the time, reach target transmission up to described liquid crystal layer transmittance, and make described first period of sub-frame, described second period of sub-frame and described the 3rd period of sub-frame correspond respectively to the liquid crystal layer light transmittance curve; And
In the first color overlapping period in described first period of sub-frame, control described second color light source to send described second coloured light with first brightness value, the wherein said first color overlapping period is corresponding to the first light transmittance curve section of described liquid crystal layer light transmittance curve, and described first brightness value is the continuous integration value of described first intensity level to the described first light transmittance curve section.
10. the driving method of display according to claim 9 also comprises:
In the second color overlapping period in described first period of sub-frame, control described three-color light source to send described the 3rd coloured light with second brightness value, the wherein said second color overlapping period is corresponding to the second light transmittance curve section of described liquid crystal layer light transmittance curve, and described second brightness value is the continuous integration value of described second intensity level to the described second light transmittance curve section.
11. the driving method of display according to claim 10 also comprises:
In second frame period, in the 4th period of sub-frame, the 5th period of sub-frame and the 6th period of sub-frame, order drives described first color light source, described second color light source and described three-color light source respectively respectively;
Respectively in described the 4th period of sub-frame, described the 5th period of sub-frame and described the 6th period of sub-frame, control the described liquid crystal layer transmittance of described liquid crystal layer, make described liquid crystal layer transmittance increase and increase along with the time, reach described target transmission up to described liquid crystal layer transmittance, and make described the 4th period of sub-frame, described the 5th period of sub-frame and described the 6th period of sub-frame correspond respectively to described liquid crystal layer light transmittance curve; And
In the 3rd color overlapping period in described the 4th period of sub-frame, control described second color light source to send described second coloured light with the 3rd brightness value, wherein said the 3rd color overlapping period is corresponding to the 3rd light transmittance curve section of described liquid crystal layer light transmittance curve, described the 3rd brightness value is the continuous integration value of described second intensity level to described the 3rd light transmittance curve section, and described the 3rd brightness value equals described first brightness value in fact.
12. the driving method of display according to claim 11 also comprises:
In the 4th color overlapping period in described the 4th period of sub-frame, control described three-color light source to send described the 3rd coloured light with the 4th brightness value, wherein said the 4th color overlapping period is corresponding to the 4th light transmittance curve section of described liquid crystal layer light transmittance curve, described the 4th brightness value is the continuous integration value of described the 3rd intensity level to described the 4th light transmittance curve section, and described the 4th brightness value equals described second brightness value in fact.
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| CN200810174836A CN101739964A (en) | 2008-11-07 | 2008-11-07 | Driving method of backlight module and display |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103854618A (en) * | 2012-12-03 | 2014-06-11 | 三星显示有限公司 | Display apparatus |
| CN105427813A (en) * | 2015-11-30 | 2016-03-23 | 友达光电股份有限公司 | Field-order display method and field-order display device |
-
2008
- 2008-11-07 CN CN200810174836A patent/CN101739964A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103854618A (en) * | 2012-12-03 | 2014-06-11 | 三星显示有限公司 | Display apparatus |
| CN103854618B (en) * | 2012-12-03 | 2019-03-08 | 三星显示有限公司 | Display device |
| CN105427813A (en) * | 2015-11-30 | 2016-03-23 | 友达光电股份有限公司 | Field-order display method and field-order display device |
| CN105427813B (en) * | 2015-11-30 | 2018-03-16 | 友达光电股份有限公司 | Field-order display method and field-order display device |
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Application publication date: 20100616 |