CN115019749A - Panel display system capable of automatically and dynamically adjusting refresh rate - Google Patents
Panel display system capable of automatically and dynamically adjusting refresh rate Download PDFInfo
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- CN115019749A CN115019749A CN202210640181.9A CN202210640181A CN115019749A CN 115019749 A CN115019749 A CN 115019749A CN 202210640181 A CN202210640181 A CN 202210640181A CN 115019749 A CN115019749 A CN 115019749A
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- 230000000007 visual effect Effects 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 abstract description 2
- 230000011664 signaling Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 15
- 239000004973 liquid crystal related substance Substances 0.000 description 3
- 239000003990 capacitor Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
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- 230000004075 alteration 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
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
- G09G5/39—Control of the bit-mapped memory
- G09G5/393—Arrangements for updating the contents of the bit-mapped memory
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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
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
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Abstract
The invention discloses a panel display system capable of automatically and dynamically adjusting refresh rate, which comprises a display panel, a drive integrated circuit, a system platform, an FRC control unit, an image data comparison unit and a counter, wherein: the FRC control unit, the image data comparison unit and the counter are additionally arranged in the drive integrated circuit; the FRC control unit is responsible for outputting an FRC signal and controlling the refresh rate of the driving scanning of the display panel; the image data comparison unit is responsible for comparing whether the adjacent picture data are the same or not and judging whether the refresh rate needs to be changed or not; the counter has a counting function and is used for assisting in judging the same times of the pictures and serving as a parameter for adjusting the refresh rate by the FRC control unit; the beneficial effects of the invention are: the method realizes the automatic dynamic refresh rate adjustment of the display panel, meets the aim of automatically adjusting the refresh rate of the mobile electronic equipment in different application scenes, and achieves the optimization of visual experience and power consumption balance.
Description
Technical Field
The invention belongs to the technical field of integrated circuits, and particularly relates to a panel display system capable of automatically and dynamically adjusting a refresh rate.
Background
With the rapid development of the mobile internet technology, mobile electronic products enter thousands of households, and become an essential part of daily work, life and entertainment of people; people can enjoy ultra-high-definition audio and video experience anytime and anywhere, or enjoy games with relatives and friends online, or carry out video teleconference with clients far away from other places, which is convenient, and besides the increasing convenience of communication networks, the contribution of the technical development of the display panel is not left.
The display panel is used as a large facade of the mobile electronic product, and is not only a display window of image data information, but also a real-time human-computer interaction interface; the conventional panel display system mainly includes: the display device comprises a display panel, a drive integrated circuit and a system platform; on the display panel, a horizontal step-by-step scanning circuit (GIP) and a sub-pixel driving device (pixel TFT for short) connected in series by a longitudinal image data line are integrated and designed; when the panel works, the GIP circuit outputs a driving signal, the sub-pixel TFTs of the corresponding column are turned on, so that the voltage on the image data line can be written into the pixel electrodes to drive the liquid crystal to rotate, corresponding gray scale brightness is obtained, and different color gradations are obtained through the red/green/blue resistors; the GIP circuit can output driving signals line by line, so that the whole sub-pixel TFT is written with the required voltage in sequence, and a color picture of one frame is displayed on the panel.
In order to meet the use requirements of different application scenes of mobile electronic equipment and achieve the purpose of optimizing visual experience and power balance, a panel display system capable of automatically and dynamically adjusting a refresh rate is provided.
Disclosure of Invention
The invention aims to provide a panel display system capable of automatically and dynamically adjusting the refresh rate, which can meet the use requirements of different application scenes of mobile electronic equipment and achieve the aim of optimizing the balance of visual experience and power consumption.
In order to achieve the purpose, the invention provides the following technical scheme: a panel display system capable of automatically and dynamically adjusting refresh rate comprises a display panel, a drive integrated circuit, a system platform, an FRC control unit, an image data comparison unit and a counter, wherein:
the FRC control unit, the image data comparison unit and the counter are additionally arranged in the drive integrated circuit;
the FRC control unit is responsible for outputting an FRC signal and controlling the refresh rate of the driving scanning of the display panel;
the image data comparison unit is responsible for comparing whether the adjacent picture data are the same or not and judging whether the refresh rate needs to be changed or not;
the counter has a counting function, is used for assisting in judging the same times of the picture, and is used as a parameter for adjusting the refresh rate by the FRC control unit.
The invention also comprises an FRC driving signal and a TFT switch, the added FRC driving signal is matched with the TFT switch to control the output waveform of the Gate of each row, when the FRC works, the TFT is opened, the Gate signal of each row on the panel is kept at the VGL level, the in-plane sub-pixel TFT is closed, and the display picture is not refreshed.
As a preferred technical solution of the present invention, the driving integrated circuit includes a GIP Control, a Source Driver, and a Timing Control.
As a preferred technical solution of the present invention, the FRC Control unit and the image data comparison unit are connected to Timing Control.
As a preferred technical solution of the present invention, the counter is connected to the image data comparing unit and the FRC control unit, respectively.
As a preferred embodiment of the present invention, the driving integrated circuit is connected to a display panel.
As a preferred embodiment of the present invention, the system platform is connected to a driving integrated circuit.
The invention realizes the self-refresh rate adjustment by the cooperation of an FRC control unit, an image data comparison unit and a counter which are added in a drive integrated circuit; each image data is output to a driving integrated circuit on the display panel by a system platform (Host), and the image data comparison unit performs image comparison; if the two input image data are the same, the counter is increased by 1, and the FRC control unit is informed to increase the FRC width and reduce the refresh rate of the panel display; the FRC signal passes through a Timing Control module to adjust a clock Control signal of the GIP circuit, so that the operation period of the GIP clock signal is reduced, and the power consumption of the panel is reduced; meanwhile, the FRC signal opens a TFT device newly added on the panel, all the Gate signals in the plane are kept at the level of VGL, the voltage of the sub-pixels in the plane is ensured not to leak, and the display effect of the previous picture is kept; then storing the picture in an internal RAM; if the two input pictures are different, the counter is decreased by 1, the FRC control unit is informed to reduce the FRC width, the refresh rate of the panel display is increased, the panel of the new picture is output, and the new picture is stored in the RAM inside to finish the refreshing of the picture.
Compared with the prior art, the invention has the beneficial effects that:
the method realizes the automatic dynamic refresh rate adjustment of the display panel, meets the aim of automatically adjusting the refresh rate of the mobile electronic equipment in different application scenes, and achieves the optimization of visual experience and power consumption balance.
Drawings
FIG. 1 is a diagram of a conventional panel display system;
FIG. 2 is a schematic diagram of a conventional panel display;
FIG. 3 is a diagram of a panel display system according to the present invention;
FIG. 4 is a schematic diagram of a panel display of the present invention;
FIG. 5 is a timing diagram illustrating the operation of the present invention with a refresh rate of 120 Hz;
FIG. 6 is a timing diagram illustrating the operation of the present invention with a refresh rate of 60 Hz;
FIG. 7 is a timing diagram illustrating the operation of the present invention with a refresh rate of 40 Hz;
FIG. 8 is a timing diagram illustrating the operation of the present invention with a refresh rate of 30 Hz;
FIG. 9 is a timing diagram illustrating the operation of the present invention with a 24Hz refresh rate;
FIG. 10 is a timing diagram illustrating the operation of the present invention with a refresh rate of 20 Hz;
FIG. 11 is a simplified operational flow diagram of the autonomic adjustment of the refresh rate of the panel of the present invention;
in the figure: the Display is a Display panel; the GIP is a horizontal step-by-step scanning circuit; the TFT is a sub-pixel driving device; GIP Control is a grid signal Control circuit, Source Driver is a Source signal drive circuit, and Timing Control is a time sequence Control circuit; host is a system platform; gn is a gate signal line of the nth stage; c LC Is a liquid crystal capacitor; c ST Is a storage capacitor; CLK is a clock.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a diagram of a conventional panel display system, including: the display device comprises a display panel, a drive integrated circuit and a system platform;
FIG. 2 is a schematic diagram of a conventional panel display;
on the display panel, a horizontal step-by-step scanning circuit (GIP) and a sub-pixel driving device (pixel TFT) connected in series by a vertical image data line are integrally designed; when the panel works, the GIP circuit outputs a driving signal, the sub-pixel TFTs of the corresponding column are turned on, so that the voltage on the image data line can be written into the pixel electrodes to drive the liquid crystal to rotate, corresponding gray scale brightness is obtained, and different color gradations are obtained through the red/green/blue resistors; the GIP circuit can output driving signals line by line, so that the whole sub-pixel TFT is written with the required voltage in sequence, and a color picture of one frame is displayed on the panel.
FIG. 3 is a diagram of a panel display system according to the present invention; in the panel driving integrated circuit of the invention, the following three units are added:
the FRC control unit is responsible for outputting an FRC signal to control and adjust the refresh rate of the panel drive scanning;
the image data comparison unit is responsible for comparing whether the adjacent picture data are the same or not and judging whether the refresh rate needs to be changed or not;
and the counter has a counting function and is used for assisting in judging the same times of the pictures and serving as a parameter for adjusting the refresh rate by the FRC control unit.
FIG. 4 is a schematic diagram of a panel display of the present invention; adding one FRC drive and one TFT switch: the added FRC driving signal is matched with a TFT switch to control the output waveform of the Gate of each row; when FRC works, TFT is opened, Gate signal of each row on panel can be kept at VGL level, in-plane sub-pixel TFT is closed, and display picture is not refreshed.
The following illustrates how the panel refresh rate is adjusted by the FRC signal by timing at different refresh rates:
as shown in fig. 5, when the refresh rate is 120Hz, one frame time is 8.3ms, the FRC signal operates at the time of non-DATA writing between frames, and the same number in DATA indicates that the pictures are consistent; different representation pictures are inconsistent;
FIG. 6 shows that the FRC signal operation time is lengthened when the refresh rate is 60Hz, and so on;
FIG. 7 shows an operation sequence with a refresh rate of 40 Hz;
FIG. 8 shows an operation sequence with a refresh rate of 30 Hz;
FIG. 9 shows an operation sequence with a refresh rate of 24 Hz;
FIG. 10 shows an operation sequence with a refresh rate of 20 Hz;
in the above, different panel refresh rates can be obtained by adjusting different FRC signal widths.
The invention realizes the self-refresh rate adjustment by the cooperation of an FRC control unit, an image data comparison unit and a counter which are added in a drive integrated circuit;
as shown in fig. 11, each image data is outputted from the system platform (Host) to the driving ic on the display panel, and the image data comparing unit performs image comparison;
if the two input image data are the same, the counter is increased by 1, and the FRC control unit is informed to increase the FRC width and reduce the refresh rate of the panel display; the FRC signal passes through a Timing Control module to adjust a clock Control signal of the GIP circuit, so that the operation period of the GIP clock signal is reduced, and the power consumption of the panel is reduced; meanwhile, the FRC signal opens a TFT device newly added on the panel, all the Gate signals in the plane are kept at the level of VGL, the voltage of the sub-pixels in the plane is ensured not to leak, the display effect of the previous picture is kept, and then the picture is stored in an internal RAM; if the two input pictures are different, the counter is decreased by 1, the FRC control unit is informed to reduce the FRC width, the refresh rate of the panel display is increased, the panel of the new picture is output, and the new picture is stored in the RAM inside to finish the refreshing of the picture.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A panel display system capable of automatically and dynamically adjusting a refresh rate, comprising: including display panel, drive integrated circuit, system platform, FRC the control unit, image data contrast unit, counter, wherein:
the FRC control unit, the image data comparison unit and the counter are additionally arranged in the drive integrated circuit;
the FRC control unit is responsible for outputting FRC signals and controlling the refresh rate of the driving scanning of the display panel;
the image data comparison unit is responsible for comparing whether the adjacent picture data are the same or not and judging whether the refresh rate needs to be changed or not;
the counter has a counting function, is used for assisting in judging the same times of the picture, and is used as a parameter for adjusting the refresh rate by the FRC control unit.
2. The panel display system according to claim 1, wherein the refresh rate is dynamically adjustable on an autonomous basis: the increased FRC driving signal is matched with a TFT switch to control the output waveform of the Gate of each line, when the FRC works, the TFT is opened, the Gate signal of each line on the panel is kept at the level of VGL, the in-plane sub-pixel TFT is closed, and the display picture is not refreshed.
3. The panel display system according to claim 1, wherein the refresh rate is dynamically adjustable on an autonomous basis: the driving integrated circuit comprises GIP Control, Source Driver and Timing Control.
4. The panel display system according to claim 3, wherein the refresh rate is dynamically adjustable by itself, and the panel display system further comprises: the FRC Control unit and the image data comparison unit are connected with the Timing Control.
5. The panel display system according to claim 1, wherein the refresh rate is dynamically adjustable on an autonomous basis: the counter is respectively connected with the image data comparison unit and the FRC control unit.
6. The panel display system according to claim 1, wherein the refresh rate is dynamically adjustable on an autonomous basis: the driving integrated circuit is connected with the display panel.
7. The panel display system according to claim 1, wherein the refresh rate is dynamically adjustable on an autonomous basis: the system platform is connected with the driving integrated circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210640181.9A CN115019749A (en) | 2022-06-07 | 2022-06-07 | Panel display system capable of automatically and dynamically adjusting refresh rate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210640181.9A CN115019749A (en) | 2022-06-07 | 2022-06-07 | Panel display system capable of automatically and dynamically adjusting refresh rate |
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| CN111768738A (en) * | 2020-06-11 | 2020-10-13 | 昇显微电子(苏州)有限公司 | Circuit design method for reducing refresh rate and saving power consumption of AMOLED display driving chip |
| CN114071047A (en) * | 2021-10-30 | 2022-02-18 | 深圳曦华科技有限公司 | Frame rate control method and related device |
-
2022
- 2022-06-07 CN CN202210640181.9A patent/CN115019749A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1375808A (en) * | 2001-03-10 | 2002-10-23 | 夏普株式会社 | Frame speed controller |
| US20090122188A1 (en) * | 2005-11-07 | 2009-05-14 | Toshiharu Hanaoka | Image display device and method |
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Application publication date: 20220906 |