CN115985257A - Driving method and system of electronic paper module - Google Patents
Driving method and system of electronic paper module Download PDFInfo
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- CN115985257A CN115985257A CN202211728510.1A CN202211728510A CN115985257A CN 115985257 A CN115985257 A CN 115985257A CN 202211728510 A CN202211728510 A CN 202211728510A CN 115985257 A CN115985257 A CN 115985257A
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000002245 particle Substances 0.000 claims abstract description 31
- 238000010586 diagram Methods 0.000 description 3
- 241001270131 Agaricus moelleri Species 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/166—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
- G02F1/167—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/1685—Operation of cells; Circuit arrangements affecting the entire cell
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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
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention provides a driving method and a system of an electronic paper module, which relate to the technical field of electronic paper module display, and the method comprises the following steps of S1: acquiring parameter state data and sending the parameter state data in a power-on state; s2: inputting a high level which is composed of a positive voltage at a preset first moment and a negative voltage at a preset second moment and is a period to drive; s3: and according to the fact that the positive voltage and the negative voltage mutually counteract the movement of the particles, the forward and reverse movement time of the particles is the difference value between the preset first moment and the preset second moment, and the forward and reverse movement time is used as the minimum time unit of the particle operation. The method can improve the display gray scale of the EPD.
Description
Technical Field
The invention relates to the technical field of electronic paper module display, in particular to a driving method and system of an electronic paper module.
Background
In the EPD display, the gray levels are usually below 16 gray levels, the specification of the black and white screen is usually 2 gray levels, 4 gray levels and the maximum is 16 gray levels, mainly because the gate on time is too long, i.e. the time of the CKV high level is too long. The refresh rate is only 200k. The speed is not fast enough and is limited by the driver chip, which requires sufficient energy. It takes time to supply sufficient energy. The high time of CKV, i.e. the time for charging the driver chip, is relatively long because more energy is needed. Since there is an upper speed limit, there is a lower limit on the time unit for illumination. That is, since the lower limit of the lighting time unit is too high and cannot be made fine, 16 time units reach the maximum value and higher gray scale cannot be achieved.
Disclosure of Invention
The problem to be solved by the invention is how to improve the display gray scale of the EPD.
In order to solve the above problems, the present invention provides a driving method of an electronic paper module, including the steps of:
s1: acquiring parameter state data and sending the parameter state data in a power-on state;
s2: inputting a high level which is composed of a positive voltage at a preset first moment and a negative voltage at a preset second moment and is a period to drive;
s3: and according to the fact that the positive voltage and the negative voltage mutually counteract the movement of the particles, the forward and reverse movement time of the particles is the difference value between the preset first moment and the preset second moment, and the forward and reverse movement time is used as the minimum time unit of the particle operation.
In the above method, the time during which the input positive voltage is high is longer than the time during which the negative voltage is high. The positive and negative voltages cancel particle motion. And obtaining the forward and reverse movement time of the time particles through the difference value between the preset first moment and the preset second moment. The time for the time particles to move forward and backward can be very small as long as the time of the preset first moment is controlled. If the time of forward and backward movement of the time particles is taken as the minimum time unit of particle operation, more gray scales can be expressed, thereby improving the display gray scale of the EPD. The duty ratio needs to be acquired again once each time the waveform of one length is completed, and then the execution is completed once until the waveform is finished and enters a stop state, and the next round of EPD starting is waited.
Further, the parameter status data in step S1 includes a gate duty cycle and a gate rate.
Further, the method also comprises the following steps:
s4: and when the waveform with one length is finished, acquiring the parameter state data of the gate duty ratio and the gate rate once again, and then finishing the execution once until the waveform is finished and enters a stop state, and waiting for the starting of the next round of EPD.
Further, the step S4 includes:
s41: and outputting the data entering the stop state to a waveform display area for displaying.
Further, the preset first time in the step S2 is greater than the preset second time.
A driving system of an electronic paper module comprises:
an acquisition unit: the device is used for acquiring parameter state data and sending the parameter state data in a power-on state;
a voltage input unit: the driving circuit is used for inputting a high level which is composed of a positive voltage at a preset first moment and a negative voltage at a preset second moment and is in one period to drive;
minimum time unit selection unit: the particle motion is mutually counteracted according to the positive voltage and the negative voltage, the time of the forward and reverse motion of the particles is the difference value between the preset first moment and the preset second moment, and the forward and reverse motion time is taken as the minimum time unit of the particle operation.
Further, the parametric state data includes a gate duty cycle and a gate rate.
Further, still include:
an execution unit: the method is used for acquiring the parameter state data of the gate duty ratio and the gate rate once again when each time the waveform with one length is completed, and then completing the execution once until the waveform is finished and enters a stop state, and waiting for the starting of the next round of EPD.
Further, the execution unit includes:
a display subunit: and outputting the data entering the stop state to a waveform display area for displaying.
Further, the preset first time is greater than the preset second time.
The technical scheme adopted by the invention has the following beneficial effects:
the present invention selects the lighting of the minimum time unit by adjusting the difference between the time when the positive voltage is input to the high level and the time when the negative voltage is high level. The smaller the lighting time, the lower limit, and therefore the higher the gray scale that can be achieved.
Drawings
Fig. 1 is a flowchart illustrating a driving method of an electronic paper module according to an embodiment of the present invention;
fig. 2 is a flowchart of a driving method of an electronic paper module according to a first embodiment of the present invention;
fig. 3 is a waveform diagram of a display effect comparing a driving method of an electronic paper module according to an embodiment of the present invention with a conventional high level stacking method;
fig. 4 is a graph of brightness gray scale at a preset second time t1 in the driving method of the electronic paper module according to the embodiment of the invention;
fig. 5 is a graph of brightness gray scale at a preset first time t2 in the driving method of the electronic paper module according to the embodiment of the invention;
fig. 6 is a first structural diagram of a driving system of an electronic paper module according to a second embodiment of the present invention;
fig. 7 is a second structure diagram of a driving system of the electronic paper module according to a second embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Example one
The embodiment provides a driving method of an electronic paper module, as shown in fig. 1 and 2, the method includes the steps of:
s1: acquiring parameter state data and sending the parameter state data in a power-on state;
s2: inputting a high level which is composed of a positive voltage at a preset first moment and a negative voltage at a preset second moment and is a period to drive;
s3: and according to the fact that the positive voltage and the negative voltage mutually counteract the movement of the particles, the forward and reverse movement time of the particles is the difference value between the preset first moment and the preset second moment, and the forward and reverse movement time is used as the minimum time unit of the particle operation.
Referring to fig. 3, in particular, in the conventional method, the high level is superimposed. The minimum high level time unit is the high level t1 of one period in the figure, the time comparison scale is large, and the represented gray scale is less. In the method, a high level with one period consisting of a positive voltage preset at a first time t2 and a negative voltage preset at a second time t1 is input for driving, and the time for inputting the positive voltage high level is longer than the time for inputting the negative voltage high level. The positive and negative voltages cancel particle motion. And obtaining the time t of the forward and reverse movement of the time particles through the difference value between the preset first time t2 and the preset second time t 1. The time t for the time particle to move forward and backward can be very small as long as the time of the preset first time t2 is controlled. If the time t for the forward and backward movement of the time particles is taken as the minimum time unit for the particle operation, more gray scales can be expressed, thereby improving the display gray scale of the EPD.
Referring to fig. 4, if the time unit is smaller, the degree of subdivision in expressing the maximum luminance is greater. The finer the image. When t1 is smaller, 16 gray levels can be represented.
Referring to FIG. 5, t2 is larger than t1, and only 8 gray levels can be represented.
In step S1, the parameter status data includes a gate duty cycle and a gate rate.
Referring to fig. 2, the method further includes step S4: and when the waveform with one length is finished, acquiring the parameter state data of the gate duty ratio and the gate rate once again, and then finishing the execution once until the waveform is finished and enters a stop state, and waiting for the starting of the next round of EPD.
Wherein, step S4 includes S41: and outputting the data entering the stop state to a waveform display area for displaying.
In step S2, the first time is greater than the second time.
The image data of the front end is processed into a gray scale number image and then stored in ddr 3. When the drive starts to operate, the brightness value is read out. Based on the read luminance values, an appropriate waveform is found to complete the lighting.
The method selects the lighting of the minimum time unit by adjusting a difference between a time when the positive voltage is input to the high level and a time when the negative voltage is high level. The smaller the lighting time, the lower limit, and therefore the higher the gray scale that can be achieved.
Example two
This embodiment provides a driving system of an electronic paper module, as shown in fig. 6 and 7, the system includes:
an acquisition unit: the device is used for acquiring parameter state data and sending the parameter state data in a power-on state;
a voltage input unit: the driving circuit is used for inputting a high level which is composed of a positive voltage at a preset first moment and a negative voltage at a preset second moment and is in one period to drive;
minimum time unit selection unit: the particle motion is mutually counteracted according to the positive voltage and the negative voltage, the time of the forward and reverse motion of the particles is the difference value between the preset first moment and the preset second moment, and the forward and reverse motion time is taken as the minimum time unit of the particle operation.
Wherein the parameter state data includes a gate duty cycle and a gate rate.
Wherein, still include the execution unit: the method is used for acquiring the parameter state data of the gate duty ratio and the gate rate once again when each time the waveform with one length is completed, and then completing the execution once until the waveform is finished and enters a stop state, and waiting for the starting of the next round of EPD.
Wherein, the execution unit includes the display subunit: and outputting the data entering the stop state to a waveform display area for displaying.
The preset first moment is greater than the preset second moment.
The system inputs the difference between the time when the positive voltage is high and the time when the negative voltage is high through the voltage input unit, and selects the lighting of the minimum time unit through the minimum time unit selection unit. The smaller the lighting time, the lower limit, so the higher the gray scale that can be achieved.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and such changes and modifications will fall within the scope of the present invention.
Claims (10)
1. A driving method of an electronic paper module is characterized by comprising the following steps:
s1: acquiring parameter state data and sending the parameter state data in a power-on state;
s2: inputting a high level which is composed of a positive voltage at a preset first moment and a negative voltage at a preset second moment and is a period to drive;
s3: and according to the fact that the positive voltage and the negative voltage mutually counteract the movement of the particles, the forward and reverse movement time of the particles is the difference value between the preset first moment and the preset second moment, and the forward and reverse movement time is used as the minimum time unit of the particle operation.
2. The method for driving the electronic paper module according to claim 1, wherein the parameter status data in step S1 includes a gate duty cycle and a gate rate.
3. The method for driving the electronic paper module according to claim 2, further comprising the steps of:
s4: and when each time the waveform with one length is finished, acquiring parameter state data of the gate duty ratio and the gate rate once again, and then finishing one execution until the waveform is finished entering a stop state, and waiting for the starting of the next round of EPD.
4. The method for driving the electronic paper module according to claim 3, wherein the step S4 includes:
s41: and outputting the data entering the stop state to a waveform display area for displaying.
5. The method for driving an electronic paper module according to claim 1, wherein the first predetermined time is greater than the second predetermined time in step S2.
6. A driving system of an electronic paper module is characterized by comprising:
an acquisition unit: the device is used for acquiring parameter state data and sending the parameter state data in a power-on state;
a voltage input unit: the driving circuit is used for inputting a high level which is composed of a positive voltage at a preset first moment and a negative voltage at a preset second moment and is in one period to drive;
minimum time unit selection unit: the particle motion is mutually counteracted according to the positive voltage and the negative voltage, the time of the forward and reverse motion of the particles is the difference value between the preset first moment and the preset second moment, and the forward and reverse motion time is taken as the minimum time unit of the particle operation.
7. The driving system of an electronic paper module of claim 6, wherein the parametric state data includes a gate duty cycle and a gate rate.
8. The driving system of the electronic paper module according to claim 7, further comprising:
an execution unit: the method is used for acquiring the parameter state data of the gate duty ratio and the gate rate once again when each time the waveform with one length is completed, and then completing the execution once until the waveform is finished and enters a stop state, and waiting for the starting of the next round of EPD.
9. The driving system of an electronic paper module according to claim 8, wherein the execution unit comprises:
a display subunit: and outputting the data entering the stop state to a waveform display area for displaying.
10. The driving system of the electronic paper module of claim 6, wherein the predetermined first time is greater than the predetermined second time.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211728510.1A CN115985257A (en) | 2022-12-30 | 2022-12-30 | Driving method and system of electronic paper module |
| PCT/CN2023/138117 WO2024140163A1 (en) | 2022-12-30 | 2023-12-12 | E-paper module driving method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211728510.1A CN115985257A (en) | 2022-12-30 | 2022-12-30 | Driving method and system of electronic paper module |
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| Publication Number | Publication Date |
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| CN115985257A true CN115985257A (en) | 2023-04-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211728510.1A Pending CN115985257A (en) | 2022-12-30 | 2022-12-30 | Driving method and system of electronic paper module |
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| WO (1) | WO2024140163A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024140163A1 (en) * | 2022-12-30 | 2024-07-04 | 江西兴泰科技股份有限公司 | E-paper module driving method and system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1802684A (en) * | 2003-06-11 | 2006-07-12 | 皇家飞利浦电子股份有限公司 | Electrophoretic display unit |
| KR101480003B1 (en) * | 2008-03-31 | 2015-01-09 | 삼성디스플레이 주식회사 | Method of driving electrophoretic display |
| US8446358B2 (en) * | 2008-04-16 | 2013-05-21 | Nlt Technologies, Ltd. | Image display device having memory property, driving control device and driving method to be used for same |
| US11049463B2 (en) * | 2010-01-15 | 2021-06-29 | E Ink California, Llc | Driving methods with variable frame time |
| CN102243846A (en) * | 2011-07-14 | 2011-11-16 | 福州大学 | Method and circuit for modulating grey level of electronic paper |
| CN105070254A (en) * | 2015-08-31 | 2015-11-18 | 深圳市国华光电科技有限公司 | Quick response method of multistage gray scale electrophoresis electronic paper |
| CN115985257A (en) * | 2022-12-30 | 2023-04-18 | 江西兴泰科技股份有限公司 | Driving method and system of electronic paper module |
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2022
- 2022-12-30 CN CN202211728510.1A patent/CN115985257A/en active Pending
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2023
- 2023-12-12 WO PCT/CN2023/138117 patent/WO2024140163A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024140163A1 (en) * | 2022-12-30 | 2024-07-04 | 江西兴泰科技股份有限公司 | E-paper module driving method and system |
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| WO2024140163A1 (en) | 2024-07-04 |
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