CN109410881B - Signal transmission system and signal transmission method - Google Patents
Signal transmission system and signal transmission method Download PDFInfo
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- CN109410881B CN109410881B CN201811565602.6A CN201811565602A CN109410881B CN 109410881 B CN109410881 B CN 109410881B CN 201811565602 A CN201811565602 A CN 201811565602A CN 109410881 B CN109410881 B CN 109410881B
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- 230000008054 signal transmission Effects 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000012549 training Methods 0.000 claims abstract description 318
- 230000005855 radiation Effects 0.000 abstract description 11
- 239000004973 liquid crystal related substance Substances 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 3
- 238000004020 luminiscence type Methods 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 229920001621 AMOLED Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3696—Generation of voltages supplied to electrode drivers
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- Crystallography & Structural Chemistry (AREA)
- Liquid Crystal Display Device Control (AREA)
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- Synchronisation In Digital Transmission Systems (AREA)
Abstract
The invention provides a signal transmission system and a signal transmission method. The signal transmission system comprises a time schedule controller and a plurality of source drivers which are respectively and electrically connected with the time schedule controller, wherein the time schedule controller respectively transmits a plurality of clock training signals to the plurality of source drivers in a blanking stage, the frequencies of the plurality of clock training signals are the same, and the duty ratios of at least two clock training signals in the plurality of clock training signals are different, so that the electromagnetic interference radiation among the plurality of clock training signals is effectively reduced.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a signal transmission system and a signal transmission method.
Background
With the development of Display technology, flat panel Display devices such as Liquid Crystal Displays (LCDs) and Organic Light Emitting Diodes (OLEDs) have the advantages of high image quality, power saving, thin body, and wide application range, and have been widely used in various consumer electronics products such as mobile phones, televisions, personal digital assistants, digital cameras, notebook computers, desktop computers, and the like, instead of Cathode Ray Tube (CRT) Display screens.
Most of the existing liquid crystal displays in the market are backlight liquid crystal displays (lcds), which include a liquid crystal display panel and a backlight module (backlight module). The liquid crystal display panel operates on the principle that liquid crystal molecules are filled between a thin film Transistor Array (TFT Array Substrate) and a color filter (color filter, CF) Substrate, and driving voltages are applied to the two substrates to control the rotation direction of the liquid crystal molecules, so that light of the backlight module is refracted out to generate a picture.
Compared with the LCD screen, the OLED screen has the advantages of thinness, lightness, wide viewing angle, active luminescence, continuously adjustable luminescence color, low cost, fast response speed, low energy consumption, low driving voltage, wide working temperature range, simple production process, high luminescence efficiency, flexible display and the like, and is known as a 'dream display'. The OLED panel can be classified into two major categories, i.e., direct addressing and thin film transistor Matrix addressing, of a Passive Matrix (PM) OLED and an Active Matrix (AM) OLED according to a driving method.
In a conventional display device, a timing controller (Tcon) and a plurality of source drivers are generally provided for driving the display device to display. In a display device using a point-to-point (P2P) transmission protocol, during a horizontal blanking (H Blank) phase and a vertical blanking (V Blank) phase, a timing controller transmits a plurality of Clock training (Clock training) signals with the same frequency and the same high and low potential switching points to a plurality of source drivers, respectively, wherein the duty ratio of the Clock training signals is 5:9, since the clock training signals are single and repeated, electromagnetic interference (EMI) radiation between the clock training signals is large, and the EMI radiation is particularly significant when the frequencies of the plurality of clock training signals are between 100MHz and 340 MHz.
Disclosure of Invention
The invention aims to provide a signal transmission system which can reduce electromagnetic interference radiation among a plurality of clock training signals.
Another object of the present invention is to provide a signal transmission method capable of reducing electromagnetic interference radiation between a plurality of clock training signals.
To achieve the above object, the present invention first provides a signal transmission system, which includes a timing controller and a plurality of source drivers electrically connected to the timing controller;
the time schedule controller respectively transmits a plurality of clock training signals to a plurality of source drivers in a blanking stage; the frequencies of the plurality of clock training signals are the same; the duty cycles of at least two of the plurality of clock training signals are different.
The blanking phase includes a line blanking phase and a field blanking phase.
The frequency of the plurality of clock training signals is 100MHz-340 MHz.
The plurality of clock training signals comprise a first clock training signal, a second clock training signal, a third clock training signal, a fourth clock training signal, a fifth clock training signal, a sixth clock training signal, a seventh clock training signal and an eighth clock training signal; the time when the low potential of the first clock training signal, the second clock training signal, the third clock training signal, the fourth clock training signal, the fifth clock training signal, the sixth clock training signal, the seventh clock training signal and the eighth clock training signal is changed into the high potential is the same; the duty ratios of the first clock training signal, the second clock training signal, the third clock training signal, the fourth clock training signal, the fifth clock training signal, the sixth clock training signal, the seventh clock training signal and the eighth clock training signal are different.
The duty ratio of the first clock training signal is 5: 9; the duty ratio of the second clock training signal is 2: 3; the duty ratio of the third clock training signal is 7: 9; the duty ratio of the fourth clock training signal is 8: 9; the duty ratio of the fifth clock training signal is 1: 9; the duty ratio of the sixth clock training signal is 2: 9; the duty ratio of the seventh clock training signal is 1: 3; the duty cycle of the eighth clock training signal is 4: 9.
The invention also provides a signal transmission method, which comprises the following steps:
step S1, providing a signal transmission system;
the signal transmission system comprises a time schedule controller and a plurality of source drivers which are respectively and electrically connected with the time schedule controller;
step S2, entering a blanking stage;
the time schedule controller respectively transmits a plurality of clock training signals to a plurality of source drivers; the frequencies of the plurality of clock training signals are the same; the duty cycles of at least two of the plurality of clock training signals are different.
The blanking phase includes a line blanking phase and a field blanking phase.
The frequency of the plurality of clock training signals is 100MHz-340 MHz.
The plurality of clock training signals comprise a first clock training signal, a second clock training signal, a third clock training signal, a fourth clock training signal, a fifth clock training signal, a sixth clock training signal, a seventh clock training signal and an eighth clock training signal; the time when the low potential of the first clock training signal, the second clock training signal, the third clock training signal, the fourth clock training signal, the fifth clock training signal, the sixth clock training signal, the seventh clock training signal and the eighth clock training signal is changed into the high potential is the same; the duty ratios of the first clock training signal, the second clock training signal, the third clock training signal, the fourth clock training signal, the fifth clock training signal, the sixth clock training signal, the seventh clock training signal and the eighth clock training signal are different.
The duty ratio of the first clock training signal is 5: 9; the duty ratio of the second clock training signal is 2: 3; the duty ratio of the third clock training signal is 7: 9; the duty ratio of the fourth clock training signal is 8: 9; the duty ratio of the fifth clock training signal is 1: 9; the duty ratio of the sixth clock training signal is 2: 9; the duty ratio of the seventh clock training signal is 1: 3; the duty cycle of the eighth clock training signal is 4: 9.
The invention has the beneficial effects that: the invention provides a signal transmission system which comprises a time schedule controller and a plurality of source drivers electrically connected with the time schedule controller respectively, wherein the time schedule controller transmits a plurality of clock training signals to the plurality of source drivers respectively in a blanking stage, the frequencies of the plurality of clock training signals are the same, and the duty ratios of at least two clock training signals in the plurality of clock training signals are different, so that the electromagnetic interference radiation among the plurality of clock training signals is effectively reduced. The signal transmission method provided by the invention can reduce electromagnetic interference radiation among a plurality of clock training signals.
Drawings
For a better understanding of the nature and technical aspects of the present invention, reference should be made to the following detailed description of the invention, taken in conjunction with the accompanying drawings, which are provided for purposes of illustration and description and are not intended to limit the invention.
In the drawings, there is shown in the drawings,
FIG. 1 is a schematic diagram of a signal transmission system according to the present invention;
FIG. 2 is a waveform diagram of a clock training signal of the signal transmission system of the present invention;
fig. 3 is a flowchart of a signal transmission method according to the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Referring to fig. 1, the present invention provides a signal transmission system, which includes a timing controller 10 and a plurality of source drivers 20 electrically connected to the timing controller 10.
The timing controller 10 transmits a plurality of clock training signals to the plurality of source drivers 20, respectively, during a blanking period. The frequency of the plurality of clock training signals is the same. The duty cycles of at least two of the plurality of clock training signals are different.
Specifically, the blanking phase includes a line blanking phase and a field blanking phase.
Preferably, the frequency of each of the plurality of clock training signals is 100MHz-340 MHz.
Specifically, referring to fig. 2, in the preferred embodiment of the present invention, the plurality of clock training signals include a first clock training signal CT1, a second clock training signal CT2, a third clock training signal CT3, a fourth clock training signal CT4, a fifth clock training signal CT5, a sixth clock training signal CT6, a seventh clock training signal CT7, and an eighth clock training signal CT 8. The first, second, third, fourth, fifth, sixth, seventh, and eighth clock training signals CT1, CT2, CT3, CT4, CT5, CT6, CT7, and CT8 have the same time when the low potential is changed to the high potential. The duty ratios of the first clock training signal CT1, the second clock training signal CT2, the third clock training signal CT3, the fourth clock training signal CT4, the fifth clock training signal CT5, the sixth clock training signal CT6, the seventh clock training signal CT7 and the eighth clock training signal CT8 are different.
Further, the duty ratio of the first clock training signal CT1 is 5:9, the duty ratio of the second clock training signal CT2 is 2:3, the duty ratio of the third clock training signal CT3 is 7:9, the duty ratio of the fourth clock training signal CT4 is 8:9, the duty ratio of the fifth clock training signal CT5 is 1:9, the duty ratio of the sixth clock training signal CT6 is 2:9, the duty ratio of the seventh clock training signal CT7 is 1:3, and the duty ratio of the eighth clock training signal CT8 is 4: 9. Defining that the duration of one cycle of the first clock training signal CT1, the second clock training signal CT2, the third clock training signal CT3, the fourth clock training signal CT4, the fifth clock training signal CT5, the sixth clock training signal CT6, the seventh clock training signal CT7 and the eighth clock training signal CT8 is 9 times of the preset duration, the first clock training signal CT1 is at the high level and maintains 5 times of the preset duration in each cycle, and then changes to the low level and maintains 4 times of the preset duration, that is, the first clock training signal CT1 is encoded as 111110000 in one cycle, the second clock training signal CT2 is at the high level and maintains 6 times of the preset duration in each cycle, that is, changes to the low level and maintains 3 times of the preset duration, the second clock training signal CT2 is encoded as 111111000 in one cycle, the third clock training signal CT3 is at the high level and maintains 7 times of the preset duration in each cycle, then changes to low level and keeps 2 times of the preset time length, namely the code of the third clock training signal CT3 in one cycle is 111111100, the code of the fourth clock training signal CT4 in each cycle is high level and keeps 8 times of the preset time length, then changes to low level and keeps 1 time of the preset time length, namely the code of the fourth clock training signal CT4 in one cycle is 111111110, the fifth clock training signal CT5 in each cycle is high level and keeps 1 time of the preset time length, then changes to low level and keeps 8 times of the preset time length, namely the code of the fifth clock training signal CT5 in one cycle is 100000000, the code of the sixth clock training signal CT6 in each cycle is high level and keeps 2 times of the preset time length, then changes to low level and keeps 7 times of the preset time length, the code of the sixth clock training signal CT6 in one cycle is 110000000, the seventh clock training signal CT7 is at a high level and maintains 3 times of the preset duration in each cycle, and then goes to a low level and maintains 6 times of the preset duration, i.e. the code of the seventh clock training signal CT7 in one cycle is 111000000, the eighth clock training signal CT8 is at a high level and maintains 4 times of the preset duration in each cycle, and then goes to a low level and maintains 5 times of the preset duration, i.e. the code of the eighth clock training signal CT8 in one cycle is 111100000.
It should be noted that, in the signal transmission system of the present invention, the timing controller 10 transmits a plurality of clock training signals to the plurality of source drivers 20 respectively in the blanking period, the frequencies of the plurality of clock training signals are the same, the duty ratios of at least two clock training signals in the plurality of clock training signals are different, preferably, the plurality of clock training signals include a first clock training signal CT1, a second clock training signal CT2, a third clock training signal CT3, a fourth clock training signal CT4, a fifth clock training signal CT5, a sixth clock training signal CT6, a seventh clock training signal CT7 and an eighth clock training signal CT8, and since the frequencies of the plurality of clock training signals are the same, the plurality of clock training signals can be used for frequency verification in the blanking period, and since the plurality of clock training signals have the different duty ratios, the positions of high and low potential switching of the clock training signals with different duty ratios are changed, so that the electromagnetic interference radiation among the clock training signals can be effectively reduced, and the transmission quality of the signals is improved.
Based on the same inventive concept, please refer to fig. 3, the present invention further provides a signal transmission method, comprising the following steps:
step S1, please refer to fig. 1, providing a signal transmission system.
The signal transmission system includes a timing controller 10 and a plurality of source drivers 20 electrically connected to the timing controller 10, respectively.
Step S2, enter the blanking phase.
The timing controller 10 transmits a plurality of clock training signals to the plurality of source drivers 20, respectively. The frequency of the plurality of clock training signals is the same. The duty cycles of at least two of the plurality of clock training signals are different.
Specifically, the blanking phase includes a line blanking phase and a field blanking phase.
Preferably, the frequency of each of the plurality of clock training signals is 100MHz-340 MHz.
Specifically, referring to fig. 2, in the preferred embodiment of the present invention, the plurality of clock training signals include a first clock training signal CT1, a second clock training signal CT2, a third clock training signal CT3, a fourth clock training signal CT4, a fifth clock training signal CT5, a sixth clock training signal CT6, a seventh clock training signal CT7, and an eighth clock training signal CT 8. The first, second, third, fourth, fifth, sixth, seventh, and eighth clock training signals CT1, CT2, CT3, CT4, CT5, CT6, CT7, and CT8 have the same time when the low potential is changed to the high potential. The duty ratios of the first clock training signal CT1, the second clock training signal CT2, the third clock training signal CT3, the fourth clock training signal CT4, the fifth clock training signal CT5, the sixth clock training signal CT6, the seventh clock training signal CT7 and the eighth clock training signal CT8 are different.
Further, the duty ratio of the first clock training signal CT1 is 5:9, the duty ratio of the second clock training signal CT2 is 2:3, the duty ratio of the third clock training signal CT3 is 7:9, the duty ratio of the fourth clock training signal CT4 is 8:9, the duty ratio of the fifth clock training signal CT5 is 1:9, the duty ratio of the sixth clock training signal CT6 is 2:9, the duty ratio of the seventh clock training signal CT7 is 1:3, and the duty ratio of the eighth clock training signal CT8 is 4: 9. Defining that the duration of one cycle of the first clock training signal CT1, the second clock training signal CT2, the third clock training signal CT3, the fourth clock training signal CT4, the fifth clock training signal CT5, the sixth clock training signal CT6, the seventh clock training signal CT7 and the eighth clock training signal CT8 is 9 times of the preset duration, the first clock training signal CT1 is at the high level and maintains 5 times of the preset duration in each cycle, and then changes to the low level and maintains 4 times of the preset duration, that is, the first clock training signal CT1 is encoded as 111110000 in one cycle, the second clock training signal CT2 is at the high level and maintains 6 times of the preset duration in each cycle, that is, changes to the low level and maintains 3 times of the preset duration, the second clock training signal CT2 is encoded as 111111000 in one cycle, the third clock training signal CT3 is at the high level and maintains 7 times of the preset duration in each cycle, then changes to low level and keeps 2 times of the preset time length, namely the code of the third clock training signal CT3 in one cycle is 111111100, the code of the fourth clock training signal CT4 in each cycle is high level and keeps 8 times of the preset time length, then changes to low level and keeps 1 time of the preset time length, namely the code of the fourth clock training signal CT4 in one cycle is 111111110, the fifth clock training signal CT5 in each cycle is high level and keeps 1 time of the preset time length, then changes to low level and keeps 8 times of the preset time length, namely the code of the fifth clock training signal CT5 in one cycle is 100000000, the code of the sixth clock training signal CT6 in each cycle is high level and keeps 2 times of the preset time length, then changes to low level and keeps 7 times of the preset time length, the code of the sixth clock training signal CT6 in one cycle is 110000000, the seventh clock training signal CT7 is at a high level and maintains 3 times of the preset duration in each cycle, and then goes to a low level and maintains 6 times of the preset duration, i.e. the code of the seventh clock training signal CT7 in one cycle is 111000000, the eighth clock training signal CT8 is at a high level and maintains 4 times of the preset duration in each cycle, and then goes to a low level and maintains 5 times of the preset duration, i.e. the code of the eighth clock training signal CT8 in one cycle is 111100000.
It should be noted that, in the signal transmission method of the present invention, the timing controller 10 transmits a plurality of clock training signals to the plurality of source drivers 20 respectively in a blanking period, the frequencies of the plurality of clock training signals are the same, the duty ratios of at least two clock training signals in the plurality of clock training signals are different, preferably, the plurality of clock training signals include a first clock training signal CT1, a second clock training signal CT2, a third clock training signal CT3, a fourth clock training signal CT4, a fifth clock training signal CT5, a sixth clock training signal CT6, a seventh clock training signal CT7 and an eighth clock training signal CT8, and since the frequencies of the plurality of clock training signals are the same, the plurality of clock training signals can be used for frequency verification in the blanking period, and simultaneously, since the plurality of clock training signals have the clock training signals with different duty ratios, the positions of high and low potential switching of the clock training signals with different duty ratios are changed, so that the electromagnetic interference radiation among the clock training signals can be effectively reduced, and the transmission quality of the signals is improved.
In summary, the signal transmission system of the present invention includes a timing controller and a plurality of source drivers electrically connected to the timing controller, wherein the timing controller transmits a plurality of clock training signals to the plurality of source drivers in a blanking period, the clock training signals have the same frequency, and at least two of the clock training signals have different duty ratios, so as to effectively reduce electromagnetic interference radiation between the clock training signals. The signal transmission method can reduce electromagnetic interference radiation among a plurality of clock training signals.
As described above, it will be apparent to those skilled in the art that other various changes and modifications may be made based on the technical solution and concept of the present invention, and all such changes and modifications are intended to fall within the scope of the appended claims.
Claims (10)
1. A signal transmission system is characterized by comprising a time schedule controller (10) and a plurality of source drivers (20) which are respectively and electrically connected with the time schedule controller (10);
the timing controller (10) transmits a plurality of clock training signals to each of a plurality of source drivers (20) in a blanking period, respectively; the frequencies of the plurality of clock training signals are the same; the duty cycles of any two of the plurality of clock training signals are different.
2. The signal transmission system of claim 1, wherein the blanking phase comprises a line blanking phase and a field blanking phase.
3. The signal transmission system of claim 1, wherein the plurality of clock training signals each have a frequency of 100MHz-340 MHz.
4. The signal transmission system of claim 1, wherein the plurality of clock training signals includes a first clock training signal (CT1), a second clock training signal (CT2), a third clock training signal (CT3), a fourth clock training signal (CT4), a fifth clock training signal (CT5), a sixth clock training signal (CT6), a seventh clock training signal (CT7), and an eighth clock training signal (CT 8); the first clock training signal (CT1), the second clock training signal (CT2), the third clock training signal (CT3), the fourth clock training signal (CT4), the fifth clock training signal (CT5), the sixth clock training signal (CT6), the seventh clock training signal (CT7), and the eighth clock training signal (CT8) have the same time when the low potential is changed to the high potential; the duty ratios of the first clock training signal (CT1), the second clock training signal (CT2), the third clock training signal (CT3), the fourth clock training signal (CT4), the fifth clock training signal (CT5), the sixth clock training signal (CT6), the seventh clock training signal (CT7) and the eighth clock training signal (CT8) are different.
5. The signal transmission system according to claim 4, wherein the duty cycle of the first clock training signal (CT1) is 5: 9; the duty cycle of the second clock training signal (CT2) is 2: 3; the duty cycle of the third clock training signal (CT3) is 7: 9; the duty cycle of the fourth clock training signal (CT4) is 8: 9; the duty cycle of the fifth clock training signal (CT5) is 1: 9; the duty cycle of the sixth clock training signal (CT6) is 2: 9; the duty cycle of the seventh clock training signal (CT7) is 1: 3; the eighth clock training signal (CT8) has a duty cycle of 4: 9.
6. A signal transmission method, comprising the steps of:
step S1, providing a signal transmission system;
the signal transmission system comprises a time sequence controller (10) and a plurality of source drivers (20) which are respectively and electrically connected with the time sequence controller (10);
step S2, entering a blanking stage;
the timing controller (10) transmits a plurality of clock training signals to each of a plurality of source drivers (20), respectively; the frequencies of the plurality of clock training signals are the same; the duty cycles of any two of the plurality of clock training signals are different.
7. The signal transmission method of claim 6, wherein the blanking phase comprises a line blanking phase and a field blanking phase.
8. The signal transmission method according to claim 6, wherein the frequencies of the plurality of clock training signals are each 100MHz-340 MHz.
9. The signal transmission method of claim 6, wherein the plurality of clock training signals includes a first clock training signal (CT1), a second clock training signal (CT2), a third clock training signal (CT3), a fourth clock training signal (CT4), a fifth clock training signal (CT5), a sixth clock training signal (CT6), a seventh clock training signal (CT7), and an eighth clock training signal (CT 8); the first clock training signal (CT1), the second clock training signal (CT2), the third clock training signal (CT3), the fourth clock training signal (CT4), the fifth clock training signal (CT5), the sixth clock training signal (CT6), the seventh clock training signal (CT7), and the eighth clock training signal (CT8) have the same time when the low potential is changed to the high potential; the duty ratios of the first clock training signal (CT1), the second clock training signal (CT2), the third clock training signal (CT3), the fourth clock training signal (CT4), the fifth clock training signal (CT5), the sixth clock training signal (CT6), the seventh clock training signal (CT7) and the eighth clock training signal (CT8) are different.
10. The signal transmission method according to claim 9, wherein the duty cycle of the first clock training signal (CT1) is 5: 9; the duty cycle of the second clock training signal (CT2) is 2: 3; the duty cycle of the third clock training signal (CT3) is 7: 9; the duty cycle of the fourth clock training signal (CT4) is 8: 9; the duty cycle of the fifth clock training signal (CT5) is 1: 9; the duty cycle of the sixth clock training signal (CT6) is 2: 9; the duty cycle of the seventh clock training signal (CT7) is 1: 3; the eighth clock training signal (CT8) has a duty cycle of 4: 9.
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| CN201811565602.6A CN109410881B (en) | 2018-12-20 | 2018-12-20 | Signal transmission system and signal transmission method |
| PCT/CN2019/081603 WO2020124870A1 (en) | 2018-12-20 | 2019-04-04 | Signal transmission system and signal transmission method |
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| CN201811565602.6A CN109410881B (en) | 2018-12-20 | 2018-12-20 | Signal transmission system and signal transmission method |
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| CN109410881B true CN109410881B (en) | 2020-06-02 |
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| CN109410881B (en) * | 2018-12-20 | 2020-06-02 | 深圳市华星光电技术有限公司 | Signal transmission system and signal transmission method |
| CN110047419A (en) * | 2019-04-30 | 2019-07-23 | 深圳市华星光电半导体显示技术有限公司 | Improve the driving device and its method of the electromagnetic radiation of GOA circuit |
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| WO2020124870A1 (en) | 2020-06-25 |
| CN109410881A (en) | 2019-03-01 |
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Address after: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee after: TCL China Star Optoelectronics Technology Co.,Ltd. Address before: 9-2 Tangming Avenue, Guangming New District, Shenzhen City, Guangdong Province Patentee before: Shenzhen China Star Optoelectronics Technology Co.,Ltd. |