CN115512667B - Driving method of electronic paper equipment and electronic paper equipment - Google Patents
Driving method of electronic paper equipment and electronic paper equipment Download PDFInfo
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- CN115512667B CN115512667B CN202211272995.8A CN202211272995A CN115512667B CN 115512667 B CN115512667 B CN 115512667B CN 202211272995 A CN202211272995 A CN 202211272995A CN 115512667 B CN115512667 B CN 115512667B
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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
- G09G3/3433—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 light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices
- G09G3/344—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 light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices based on particles moving in a fluid or in a gas, e.g. electrophoretic devices
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Abstract
The application discloses a driving method of electronic paper equipment and the electronic paper equipment, wherein the driving method comprises the following steps: pre-reading a data signal of a next frame picture, and sequentially detecting the data voltage of each pixel in each row of pixels in the next frame picture; calculating the compensation voltage of each column of pixels in the next frame according to the change condition of the data voltage corresponding to each column of pixels in the next frame; and compensating the original data voltage of each column of pixels corresponding to the picture of the next frame according to the calculated compensation voltage so as to drive the picture of the next frame to be displayed. The original data voltage is calculated through detection, and the compensation value is calculated according to the change condition of the original data voltage, so that the phenomenon that the parasitic capacitance between the data line and the source electrode of the thin film transistor connected with the pixel causes voltage fluctuation of the data line in the process that the electronic paper changes from black to white or from white to black is avoided, and the crosstalk phenomenon is caused by different moving speeds of charged particles.
Description
Technical Field
The application relates to the technical field of display, in particular to a driving method of electronic paper equipment and the electronic paper equipment.
Background
Electronic paper, also called digital paper. It is an ultra-thin, ultra-light display screen, i.e. it is understood as a "paper-like thin, flexible, erasable display". In the form of an electronic paper, a sheet of Bao Jiaopian, and a layer of charged material "coated" on film, an electronic ink; this can also be seen as a thin in-cell remote control display panel.
The existing electronic paper equipment has the advantages of paper (such as almost complete visual sense and paper, etc.), can continuously convert and refresh display contents like a common liquid crystal display, and saves electricity more than an electronic book of the liquid crystal display; the electronic paper has the functions of low power consumption and folding and bending, fine and smooth picture display, wide visual angle and good visual effect in sunlight and no dead angle compared with other display technologies; however, when the black-and-white display picture of the current electronic paper is switched, the moving speeds of charged particles are different due to the influence of parasitic capacitance between the data line and the thin film transistor corresponding to the pixel, a crosstalk phenomenon occurs, and poor experience is brought to users.
Disclosure of Invention
The purpose of the application is to provide a driving method of electronic paper equipment and the electronic paper equipment, which reduce the influence of parasitic capacitance of a data line and improve crosstalk.
The application discloses a driving method of electronic paper equipment, which comprises the following steps:
pre-reading a data signal of a next frame picture, and sequentially detecting the data voltage of each pixel in each row of pixels in the next frame picture;
calculating the compensation voltage of each column of pixels in the next frame according to the change condition of the data voltage corresponding to each column of pixels in the next frame;
and compensating the original data voltage of each column of pixels corresponding to the picture of the next frame according to the calculated compensation voltage so as to drive the picture of the next frame to be displayed.
Optionally, the step of calculating the compensation voltage of each column of pixels in the next frame according to the change condition of the data voltage corresponding to each column of pixels in the next frame includes:
when the data voltage of the first pixel in the front row of pixels is positive, if the number of times that the data voltage of the first pixel in the front row of pixels changes from positive polarity to negative polarity is larger than the number of times that the data voltage of the first pixel in the front row of pixels changes from negative polarity to positive polarity, selecting a preset first compensation voltage for compensation; if the number of times that the data voltage of the row of pixels changes from positive polarity to negative polarity is equal to the number of times that the negative polarity changes to positive polarity, the compensation voltage is zero;
when the data voltage of the first pixel in the front row of pixels is negative, if the number of times that the data voltage of the first pixel in the front row of pixels changes from negative to positive is larger than the number of times that the data voltage of the first pixel in the front row of pixels changes from positive to negative, selecting a preset second compensation voltage for compensation; if the number of times the data voltage of the column of pixels changes from negative to positive is equal to the number of times the positive changes to negative, the compensation voltage is zero.
Optionally, when the data voltage of the first pixel in the current column of pixels is positive, if the number of times that the data voltage of the column of pixels changes from positive polarity to negative polarity is greater than the number of times that the data voltage of the column of pixels changes from negative polarity to positive polarity, selecting a preset first compensation voltage for compensation; if the number of times the data voltage of the column of pixels changes from positive to negative is equal to the number of times the negative changes to positive, the step of compensating the voltage to zero includes:
if the data voltage of the first pixel in the current column of pixels is VSH, then the value is assigned as a=4; if the data voltage of the next pixel is different from the data voltage of the last pixel, the next pixel is assigned a=a-2, if the data voltage of the next pixel is the same as the data voltage of the last pixel, the next pixel is assigned a=4, and so on; if the value A=2 calculated by the last pixel of the current column of pixels, selecting a first compensation voltage for compensation, and if A is other values, the compensation voltage is zero;
when the data voltage of the first pixel in the current column of pixels is negative, if the number of times that the data voltage of the column of pixels changes from negative to positive is greater than the number of times that the positive changes to negative, selecting a preset second compensation voltage for compensation; if the number of times the data voltage of the column of pixels changes from negative to positive is equal to the number of times the positive changes to negative, the step of compensating the voltage to zero includes:
if the data voltage of the first pixel in the current column of pixels is VSL, the value is assigned as a= -4, if the data voltage of the next pixel is different from the data voltage of the last pixel, the value is assigned as a=a+2, if the data voltage of the next pixel is the same as the data voltage of the last pixel, the value is assigned as a= -4, and so on, if the value a= -2 calculated by the last pixel in the current column of pixels, the second compensation voltage is selected for compensation, and if a is other values, the compensation voltage is zero.
Optionally, the step of compensating the original data voltage of each column of pixels corresponding to the next frame of picture according to the selected compensation voltage, so as to drive the step of displaying the next frame of picture, and then re-executing the step of pre-reading the data signal of the next frame of picture, and sequentially detecting the data voltage of each column of pixels in the next frame of picture.
Optionally, in the step of calculating the compensation voltage of each column of pixels in the next frame according to the change condition of the data voltage corresponding to each column of pixels in the next frame, the data voltage compensation values of all pixels in each column of pixels are equal.
Optionally, the electronic paper is divided into a first display area and a second display area along the scanning line direction;
in the step of calculating the compensation voltage of each column of pixels in the next frame according to the change condition of the data voltage corresponding to each column of pixels in the next frame, calculating the compensation voltage of each column of pixels in the second display area of the next frame according to the change condition of the data voltage corresponding to each column of pixels in the second display area;
after receiving the display signal of the next frame of picture, compensating the original data voltage of each column of pixels corresponding to the next frame of picture according to the calculated compensation voltage so as to drive the first display area by the original data voltage in the process of displaying the picture of the next frame of picture; and compensating the original data voltage of each column of pixels in the second display area of the next frame of picture according to the compensation voltage calculated by the second display area so as to drive.
Optionally, in the step of pre-reading the data signal of the next frame, sequentially detecting the data voltage of each pixel in each column of pixels in the next frame, if the read data voltage of each row of pixels in the next frame is the same as the read data voltage of each row of pixels in the current frame, directly taking the data compensation voltage of the current frame as the data compensation voltage of the next frame, and executing the step of compensating the original data voltage of each column of pixels corresponding to the next frame according to the calculated compensation voltage so as to drive the display of the next frame.
Optionally, the driving method further includes a signal detection step, and the signal detection step includes:
detecting a display signal of a next frame, and if the time interval between the display signal of the next frame and the display signal of the current frame is smaller than the preset time, directly driving a picture of the next frame by using an original data voltage; and if the time between the display signal of the next frame and the display signal of the current frame is longer than the preset time, executing the step of pre-reading the data signal of the next frame picture and sequentially detecting the data voltage of each pixel in each row of pixels in the next frame picture.
Optionally, after the current frame is displayed, directly executing the step of pre-reading the data signal of the next frame, sequentially detecting the data voltage of each pixel in each column of pixels in the next frame, and calculating the compensation voltage of each column of pixels in the next frame according to the change condition of the data voltage corresponding to each column of pixels in the next frame, where the step of calculating the compensation voltage of each column of pixels in the next frame according to the change condition of the data voltage corresponding to each column of pixels in the next frame includes:
calculating the compensation voltage of the odd column pixels in the next frame according to the change condition of the data voltage corresponding to the odd column pixels in the next frame;
calculating the compensation voltage of the even column pixels in the next frame according to the change condition of the data voltage corresponding to the even column pixels in the next frame;
the driving method further includes a signal detection step;
if the display signal of the next frame is detected before the step of calculating the compensation voltage of the even column pixel in the next frame according to the change condition of the data voltage corresponding to the even column pixel in the next frame after the step of calculating the compensation voltage of the odd column pixel in the next frame according to the change condition of the data voltage corresponding to the odd column pixel in the next frame, compensating the original data voltage of the odd column pixel corresponding to the next frame according to the calculated compensation voltage of the odd column so as to drive and display the picture of the next frame, wherein the even column adopts the original data voltage so as to drive the picture of the next frame;
and calculating the compensation voltage of the even column pixels in the next frame according to the change condition of the data voltage corresponding to the even column pixels in the next frame, and then detecting the display signal of the next frame, and compensating the original data voltage of each column of pixels corresponding to the next frame according to the calculated odd column and even column compensation voltage so as to drive the picture of the next frame to be displayed.
The application also discloses electronic paper equipment, which comprises an electronic paper panel and a driving circuit, wherein the driving circuit drives the electronic paper panel by using the driving method according to any one of the above; the electronic paper surface board comprises a plurality of data lines, a plurality of scanning lines, a plurality of pixels and a thin film transistor connected with pixel electrodes of the data lines, the scanning lines and the pixels; the driving circuit comprises an original data voltage acquisition module, a pre-reading module, a compensation calculation module and a compensation driving module, wherein the data signal of a next frame picture of a next frame is read through the pre-reading module, the original data is acquired through the original data voltage acquisition module, the compensation voltage of each column of pixels in the next frame picture is calculated through the compensation calculation module, and the original data voltage of each column of pixels corresponding to the next frame picture is compensated through the compensation calculation module according to the calculated compensation voltage so as to drive the picture of the next frame to be displayed.
Compared with the scheme without the compensation voltage, the method and the device for displaying the picture in the next frame have the advantages that the compensation voltage of each column of pixels in the next frame is judged and calculated according to the data voltage change of the original data signal of the next frame by reading the data signal of the next frame in advance, the original data voltage of each column of pixels corresponding to the next frame is compensated through the calculated compensation voltage to obtain the compensated data voltage, the compensated data voltage is used for driving the display picture of the next frame, the parasitic capacitance condition between the data line and the source electrode of the thin film transistor of the corresponding pixel is solved, the phenomenon that charged particles move at different speeds is avoided, the crosstalk phenomenon is improved, and the experience feeling of a user is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive faculty for a person skilled in the art. In the drawings:
FIG. 1 is a flow chart of a method of driving a first embodiment of the present application;
FIG. 2 is a flow chart of a driving method of a second embodiment of the present application;
FIG. 3 is a flow chart of a driving method of a second embodiment of the present application;
FIG. 4 is a flow chart of a driving method of a third embodiment of the present application;
FIG. 5 is a flow chart of a driving method of a fourth embodiment of the present application;
fig. 6 is a schematic view of an electronic paper apparatus of a fifth embodiment of the present application.
100 parts of electronic paper equipment; 110. an electronic paper panel; 111. a data line; 112. a scanning line; 113. a pixel; 114. a thin film transistor; 120. a driving circuit; 121. the original data voltage acquisition module; 122. a pre-reading module; 123. a compensation calculation module; 124. and the compensation driving module.
Detailed Description
It should be understood that the terminology, specific structural and functional details disclosed herein are merely representative for purposes of describing particular embodiments, but that the application may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or implicitly indicating the number of technical features indicated. Thus, unless otherwise indicated, features defining "first", "second" may include one or more such features either explicitly or implicitly; the meaning of "plurality" is two or more. The terms "comprises," "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that one or more other features, integers, steps, operations, elements, components, and/or groups thereof may be present or added.
In addition, terms of the azimuth or positional relationship indicated by "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are described based on the azimuth or relative positional relationship shown in the drawings, are merely for convenience of description of the present application, and do not indicate that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application.
Furthermore, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
The present application is described in detail below with reference to the attached drawings and alternative embodiments.
As shown in fig. 1, as another embodiment of the present application, there is disclosed a driving method of an electronic paper apparatus, the driving method including the steps of:
s1: pre-reading a data signal of a next frame picture, and sequentially detecting the data voltage of each pixel in each row of pixels in the next frame picture;
s2: calculating the compensation voltage of each column of pixels in the next frame according to the change condition of the data voltage corresponding to each column of pixels in the next frame;
s3: and compensating the original data voltage of each column of pixels corresponding to the picture of the next frame according to the calculated compensation voltage so as to drive the picture of the next frame to be displayed.
The driving method mainly aims at electronic paper equipment, the electronic paper equipment only displays black and white pictures, the black and white corresponding high level and low level or the positive voltage and the negative voltage are used for judging and calculating the compensation voltage of each column of pixels in the next frame picture according to the data voltage change of the original data signal of the next frame picture by reading the data signal of the next frame picture in advance, the original data voltage of each column of pixels corresponding to the next frame picture is compensated through the calculated compensation voltage to obtain the compensated data voltage, the compensated data voltage is used for driving the display picture of the next frame, the parasitic capacitance condition between a data line and the source electrode of a thin film transistor of the corresponding pixel is avoided, the phenomenon that charged particles move to different speeds is avoided, the crosstalk phenomenon is improved, the experience of a user is improved, and the compensated voltage can be adjusted according to the size of the parasitic capacitance.
The step of compensating the original data voltage of each column of pixels corresponding to the next frame of picture according to the selected compensation voltage so as to drive the step of displaying the next frame of picture, and then re-executing the step of pre-reading the data signals of the next frame of picture and sequentially detecting the data voltage of each column of pixels in the next frame of picture; after the calculation of each frame of picture is completed, the compensation data of the next frame is calculated according to the steps S1, S2 and S3 to drive the picture display of the next frame, and after the calculation of the compensation voltages of all columns of pixels of the current frame is completed, the compensation voltages of all columns of pixels of the next frame are calculated.
In general, in the step of calculating the compensation voltage of each column of pixels in the next frame according to the change condition of the data voltage corresponding to each column of pixels in the next frame, the data voltage compensation values of all pixels in each column of pixels are equal, that is, the data voltages of all corresponding pixels on the same column of data line are compensated by the same voltage value, for example, four pixels in a column are exemplified, for example, the first pixel is +15v, the second pixel is-15V, the third pixel is +15v, the fourth pixel is-15V, the voltage of the corresponding pixel after compensation is +16v, the second pixel is-14V, the third pixel is +16v, and the fourth pixel is-14V.
In addition, the driving circuit in the electronic paper equipment only needs a buffer space capable of storing one frame of data, and can display the current frame after calculation and immediately calculate the next frame of data without influencing the driving time; of course, the buffer space may be used for storing two or more frames, and when two frames are used, the step of pre-reading the data signal of the next frame picture, sequentially detecting the data voltage of each pixel in each column of pixels in the next frame picture, if the read data voltage of each row of pixels in the next frame is the same as the read data voltage of each row of pixels in the current frame, directly taking the data compensation voltage of the current frame as the data compensation voltage of the next frame, and executing the step of compensating the original data voltage of each column of pixels corresponding to the next frame picture according to the calculated compensation voltage so as to drive the picture of the next frame.
As shown in fig. 2, as a second embodiment of the present application, the first embodiment is further refined, and step S2 includes:
when the data voltage of the first pixel in the front row of pixels is positive, if the number of times that the data voltage of the first pixel in the front row of pixels changes from positive polarity to negative polarity is larger than the number of times that the data voltage of the first pixel in the front row of pixels changes from negative polarity to positive polarity, selecting a preset first compensation voltage for compensation; if the number of times that the data voltage of the row of pixels changes from positive polarity to negative polarity is equal to the number of times that the negative polarity changes to positive polarity, the compensation voltage is zero;
when the data voltage of the first pixel in the front row of pixels is negative, if the number of times that the data voltage of the first pixel in the front row of pixels changes from negative to positive is larger than the number of times that the data voltage of the first pixel in the front row of pixels changes from positive to negative, selecting a preset second compensation voltage for compensation; if the number of times the data voltage of the column of pixels changes from negative to positive is equal to the number of times the positive changes to negative, the compensation voltage is zero.
Further, when the data voltage of the first pixel in the current column of pixels is positive, if the number of times that the data voltage of the first pixel in the current column of pixels changes from positive to negative is greater than the number of times that the data voltage of the second pixel in the current column of pixels changes from negative to positive, selecting a preset first compensation voltage for compensation; if the number of times the data voltage of the row of pixels changes from positive to negative is equal to the number of times the negative changes to positive, then the compensation voltage is zero, as shown in fig. 3:
if the data voltage of the first pixel in the current column of pixels is VSH, storing a in the register, and assigning a to a as a=4; if the data voltage of the next pixel is different from the data voltage of the last pixel, the next pixel is assigned a=a-2, if the data voltage of the next pixel is the same as the data voltage of the last pixel, the next pixel is assigned a=4, and so on; if the value A=2 calculated by the last pixel of the current column of pixels, selecting a first compensation voltage for compensation, and if A is other values, the compensation voltage is zero;
when the data voltage of the first pixel in the current column of pixels is negative, if the number of times that the data voltage of the column of pixels changes from negative to positive is greater than the number of times that the positive changes to negative, selecting a preset second compensation voltage for compensation; if the number of times the data voltage of the row of pixels changes from negative to positive is equal to the number of times the positive changes to negative, then the compensation voltage is zero in the step of:
if the data voltage of the first pixel in the current column of pixels is VSL, the value is assigned as a= -4, if the data voltage of the next pixel is different from the data voltage of the last pixel, the value is assigned as a=a+2, if the data voltage of the next pixel is the same as the data voltage of the last pixel, the value is assigned as a= -4, and so on, if the value a= -2 calculated by the last pixel in the current column of pixels, the second compensation voltage is selected for compensation, and if a is other values, the compensation voltage is zero.
The method comprises the steps of reading a data signal of a next frame picture from a first frame, determining specific data voltage for a first row of each column of data of the next frame, carrying out corresponding assignment, calculating data voltage change of a data line of the assigned current column, if the data is unchanged, enabling an A value not to change, if the data voltage is changed, enabling A=A-2 if VSH-VSL is adopted, enabling A=A+2 if VSL-VSH is adopted, and calculating each column by adopting the same calculation method.
As shown in fig. 4, as a third embodiment of the present application, unlike the above-described embodiments, the electronic paper is divided into a first display area and a second display area along the scanning line direction;
in step S2, the steps include:
s2': calculating the compensation voltage of each column of pixels in the second display area of the next frame of picture according to the data voltage change condition corresponding to each column of pixels in the second display area;
in step S3, the steps include:
s3': driving the first display area with an original data voltage; and compensating the original data voltage of each column of pixels in the second display area of the next frame of picture according to the compensation voltage calculated by the second display area so as to drive.
Dividing a display area of the electronic paper equipment into two areas, performing compensation calculation on compensation values of all pixel columns of a whole frame of picture according to the change times of data voltages in the two areas, and calculating compensation voltage of each column of pixels in a second display area of a next frame of picture according to the change condition of the data voltages corresponding to each column of pixels in the second display area, and driving the first display area by original data voltages; according to the compensation voltage calculated by the second display area, compensating the original data voltage of each column of pixels in the second display area of the next frame of picture to drive; under the condition that the page is continuously refreshed due to the fact that the user continuously turns pages, the human eyes can preferentially see the pages of the second display area, so that data voltage compensation is only conducted on the second display area, the crosstalk problem of the first display area is not needed to be considered, calculated amount is reduced, and data of more frames can be buffered in the driving circuit.
As shown in fig. 5, as a fourth embodiment of the present application, the driving method further includes a signal detection step including:
s0: detecting a display signal of a next frame, and if the time interval between the display signal of the next frame and the display signal of the current frame is smaller than the preset time, directly driving a picture of the next frame by using an original data voltage; and if the time interval between the display signal of the next frame and the display signal of the current frame is greater than the preset time, executing the step of pre-reading the data signal of the next frame picture and sequentially detecting the data voltage of each pixel in each row of pixels in the next frame picture.
The step of adding a detection signal can timely detect the triggering condition of the display signal of the next frame, when a user frequently turns pages and refreshes, the received display signal is relatively fast, the display signal can possibly not be completely calculated in the process of calculation, the occurrence of picture delay or a clamping condition is caused, and in order to avoid the occurrence of the condition, the calculation can be stopped when the display signal is detected, and the original data of the next frame picture to be displayed can be directly output to drive the next frame picture.
In addition, after the current frame is displayed, directly executing the step of pre-reading the data signal of the next frame, sequentially detecting the data voltage of each pixel in each column of pixels in the next frame, and calculating the compensation voltage of each column of pixels in the next frame according to the change condition of the data voltage corresponding to each column of pixels in the next frame, wherein the step of calculating the compensation voltage of each column of pixels in the next frame according to the change condition of the data voltage corresponding to each column of pixels in the next frame includes:
calculating the compensation voltage of the odd column pixels in the next frame according to the change condition of the data voltage corresponding to the odd column pixels in the next frame;
calculating the compensation voltage of the even column pixels in the next frame according to the change condition of the data voltage corresponding to the even column pixels in the next frame;
the driving method further includes a signal detection step;
if the display signal of the next frame is detected before the step of calculating the compensation voltage of the even column pixel in the next frame according to the change condition of the data voltage corresponding to the even column pixel in the next frame after the step of calculating the compensation voltage of the odd column pixel in the next frame according to the change condition of the data voltage corresponding to the odd column pixel in the next frame, compensating the original data voltage of the odd column pixel corresponding to the next frame according to the calculated compensation voltage of the odd column so as to drive and display the picture of the next frame, wherein the even column adopts the original data voltage so as to drive the picture of the next frame;
and calculating the compensation voltage of the even column pixels in the next frame according to the change condition of the data voltage corresponding to the even column pixels in the next frame, and then detecting the display signal of the next frame, and compensating the original data voltage of each column of pixels corresponding to the next frame according to the calculated odd column and even column compensation voltage so as to drive the picture of the next frame to be displayed.
As shown in fig. 6, as a fifth embodiment of the present application, an electronic paper apparatus is disclosed, which includes an electronic paper panel and a driving circuit that drives the electronic paper panel using the driving method described in any of the above embodiments;
the electronic paper surface board comprises a plurality of data lines, a plurality of scanning lines, a plurality of pixels and a thin film transistor connected with pixel electrodes of the data lines, the scanning lines and the pixels;
the driving circuit comprises an original data voltage acquisition module, a pre-reading module, a compensation calculation module and a compensation driving module, wherein the data signal of a next frame picture of a next frame is read through the pre-reading module, the original data is acquired through the original data voltage acquisition module, the compensation voltage of each column of pixels in the next frame picture is calculated through the compensation calculation module, and the original data voltage of each column of pixels corresponding to the next frame picture is compensated through the compensation calculation module according to the calculated compensation voltage so as to drive the picture of the next frame to be displayed.
The method comprises the steps of pre-reading a data signal of a next frame of picture through a pre-reading module, and sequentially detecting the data voltage of each pixel in each column of pixels in the next frame of picture through an original data voltage acquisition module; the compensation calculation module calculates the compensation voltage of each column of pixels in the next frame according to the change condition of the data voltage corresponding to each column of pixels in the next frame; the compensation driving module compensates the original data voltage of each column of pixels corresponding to the next frame of picture according to the calculated compensation voltage so as to drive the picture of the next frame to be displayed, thereby solving the parasitic capacitance condition between the data line and the source electrode of the thin film transistor of the corresponding pixel, avoiding the occurrence of the condition that charged particles move at different speeds, improving the crosstalk phenomenon and improving the experience of users.
It should be noted that, the limitation of each step in the present solution is not to be considered as limiting the sequence of steps on the premise of not affecting the implementation of the specific solution, and the steps written in the previous step may be executed before, may be executed after, or may even be executed simultaneously, so long as the implementation of the present solution is possible, all should be considered as falling within the protection scope of the present application.
It should be noted that the inventive concept of the present application may form a very large number of embodiments, but the application documents are limited in size and cannot be listed one by one, so that the above-described embodiments or technical features may be arbitrarily combined to form new embodiments without conflict, and the original technical effects will be enhanced after the embodiments or technical features are combined
The foregoing is a further detailed description of the present application in connection with specific alternative embodiments, and it is not intended that the practice of the present application be limited to such descriptions. It should be understood that those skilled in the art to which the present application pertains may make several simple deductions or substitutions without departing from the spirit of the present application, and all such deductions or substitutions should be considered to be within the scope of the present application.
Claims (9)
1. A driving method of an electronic paper apparatus, characterized by comprising the steps of:
pre-reading a data signal of a next frame picture, and sequentially detecting the data voltage of each pixel in each row of pixels in the next frame picture;
calculating the compensation voltage of each column of pixels in the next frame according to the change condition of the data voltage corresponding to each column of pixels in the next frame; and
according to the calculated compensation voltage, compensating the original data voltage of each column of pixels corresponding to the picture of the next frame so as to drive the picture of the next frame to be displayed;
the step of calculating the compensation voltage of each column of pixels in the next frame according to the change condition of the data voltage corresponding to each column of pixels in the next frame comprises the following steps:
when the data voltage of the first pixel in the front row of pixels is positive, if the number of times that the data voltage of the first pixel in the front row of pixels changes from positive polarity to negative polarity is larger than the number of times that the data voltage of the first pixel in the front row of pixels changes from negative polarity to positive polarity, selecting a preset first compensation voltage for compensation; if the number of times that the data voltage of the row of pixels changes from positive polarity to negative polarity is equal to the number of times that the negative polarity changes to positive polarity, the compensation voltage is zero;
when the data voltage of the first pixel in the front row of pixels is negative, if the number of times that the data voltage of the first pixel in the front row of pixels changes from negative to positive is larger than the number of times that the data voltage of the first pixel in the front row of pixels changes from positive to negative, selecting a preset second compensation voltage for compensation; if the number of times the data voltage of the column of pixels changes from negative to positive is equal to the number of times the positive changes to negative, the compensation voltage is zero.
2. The driving method as claimed in claim 1, wherein when the data voltage of the first pixel in the previous column of pixels is positive, if the number of times the data voltage of the first column of pixels changes from positive to negative is greater than the number of times the data voltage of the first column of pixels changes from negative to positive, then selecting a predetermined first compensation voltage for compensation; if the number of times the data voltage of the column of pixels changes from positive to negative is equal to the number of times the negative changes to positive, the step of compensating the voltage to zero includes:
if the data voltage of the first pixel in the current column of pixels is VSH, then the value is assigned as a=4; if the data voltage of the next pixel is different from the data voltage of the last pixel, the next pixel is assigned a=a-2, if the data voltage of the next pixel is the same as the data voltage of the last pixel, the next pixel is assigned a=4, and so on; if the value A=2 calculated by the last pixel of the current column of pixels, selecting a first compensation voltage for compensation, and if A is other values, the compensation voltage is zero;
when the data voltage of the first pixel in the current column of pixels is negative, if the number of times that the data voltage of the column of pixels changes from negative to positive is greater than the number of times that the positive changes to negative, selecting a preset second compensation voltage for compensation; if the number of times the data voltage of the column of pixels changes from negative to positive is equal to the number of times the positive changes to negative, the step of compensating the voltage to zero includes:
if the data voltage of the first pixel in the current column of pixels is VSL, the value is assigned as a= -4, if the data voltage of the next pixel is different from the data voltage of the last pixel, the value is assigned as a=a+2, if the data voltage of the next pixel is the same as the data voltage of the last pixel, the value is assigned as a= -4, and so on, if the value a= -2 calculated by the last pixel in the current column of pixels, the second compensation voltage is selected for compensation, and if a is other values, the compensation voltage is zero.
3. The driving method according to claim 1, wherein the step of compensating the original data voltage of each column of pixels corresponding to the next frame of picture according to the calculated compensation voltage to drive the next frame of picture is performed again, and the step of pre-reading the data signal of the next frame of picture and sequentially detecting the data voltage of each pixel in each column of pixels in the next frame of picture is performed again.
4. A driving method according to any one of claims 1 to 3, wherein in the step of calculating the compensation voltage of each column of pixels in the next frame according to the change of the data voltage corresponding to each column of pixels in the next frame, the data voltage compensation values of all pixels in each column of pixels are equal.
5. The driving method according to claim 1, wherein the electronic paper is divided into a first display area and a second display area along a scanning line direction;
in the step of calculating the compensation voltage of each column of pixels in the next frame according to the change condition of the data voltage corresponding to each column of pixels in the next frame, calculating the compensation voltage of each column of pixels in the second display area of the next frame according to the change condition of the data voltage corresponding to each column of pixels in the second display area;
after receiving a display signal of a next frame of picture, compensating the original data voltage of each column of pixels corresponding to the next frame of picture according to the calculated compensation voltage so as to drive the first display area by the original data voltage in the process of displaying the picture of the next frame of picture; and compensating the original data voltage of each column of pixels in the second display area of the next frame of picture according to the compensation voltage calculated by the second display area so as to drive.
6. The driving method as claimed in claim 1, wherein in the step of pre-reading the data signal of the next frame, sequentially detecting the data voltage of each pixel in each column of pixels in the next frame, if the read data voltage of each row of pixels of the next frame is the same as the data voltage of each row of pixels of the current frame, the step of compensating the original data voltage of each column of pixels corresponding to the next frame according to the calculated compensation voltage to drive the frame displaying the next frame is performed by directly using the data compensation voltage of the current frame as the data compensation voltage of the next frame.
7. The driving method according to claim 1, wherein the driving method further comprises a signal detection step including:
detecting a display signal of a next frame, and if the time interval between the display signal of the next frame and the display signal of the current frame is smaller than the preset time, directly driving a picture of the next frame by using an original data voltage; and if the time interval between the display signal of the next frame and the display signal of the current frame is greater than the preset time, executing the step of pre-reading the data signal of the next frame picture and sequentially detecting the data voltage of each pixel in each row of pixels in the next frame picture.
8. The driving method as claimed in claim 1, wherein the step of directly performing the pre-reading of the data signal of the next frame after the current frame is displayed, sequentially detecting the data voltage of each pixel in each column of pixels in the next frame, and calculating the compensation voltage of each column of pixels in the next frame according to the change of the data voltage corresponding to each column of pixels in the next frame, wherein the step of calculating the compensation voltage of each column of pixels in the next frame according to the change of the data voltage corresponding to each column of pixels in the next frame comprises:
calculating the compensation voltage of the odd column pixels in the next frame according to the change condition of the data voltage corresponding to the odd column pixels in the next frame;
calculating the compensation voltage of the even column pixels in the next frame according to the change condition of the data voltage corresponding to the even column pixels in the next frame;
the driving method further includes a signal detection step;
if the display signal of the next frame is detected before the step of calculating the compensation voltage of the even column pixel in the next frame according to the change condition of the data voltage corresponding to the even column pixel in the next frame after the step of calculating the compensation voltage of the odd column pixel in the next frame according to the change condition of the data voltage corresponding to the odd column pixel in the next frame, compensating the original data voltage of the odd column pixel corresponding to the next frame according to the calculated compensation voltage of the odd column so as to drive and display the picture of the next frame, wherein the even column adopts the original data voltage so as to drive the picture of the next frame;
and calculating the compensation voltage of the even column pixels in the next frame according to the change condition of the data voltage corresponding to the even column pixels in the next frame, and then detecting the display signal of the next frame, and compensating the original data voltage of each column of pixels corresponding to the next frame according to the calculated odd column and even column compensation voltage so as to drive the picture of the next frame to be displayed.
9. An electronic paper device, comprising an electronic paper panel and a driving circuit, wherein the driving circuit drives the electronic paper panel by using the driving method according to any one of claims 1 to 8;
the electronic paper surface board comprises a plurality of data lines, a plurality of scanning lines, a plurality of pixels and a thin film transistor connected with pixel electrodes of the data lines, the scanning lines and the pixels;
the driving circuit comprises an original data voltage acquisition module, a pre-reading module, a compensation calculation module and a compensation driving module, wherein the data signal of a next frame picture of a next frame is read through the pre-reading module, the original data is acquired through the original data voltage acquisition module, the compensation voltage of each column of pixels in the next frame picture is calculated through the compensation calculation module, and the original data voltage of each column of pixels corresponding to the next frame picture is compensated through the compensation calculation module according to the calculated compensation voltage so as to drive the picture of the next frame to be displayed.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103676395A (en) * | 2012-09-14 | 2014-03-26 | Nlt科技股份有限公司 | Electrophoretic display device and driving method thereof |
| CN107886911A (en) * | 2016-09-30 | 2018-04-06 | 乐金显示有限公司 | Liquid crystal display and its driving method |
| CN112581919A (en) * | 2020-12-14 | 2021-03-30 | 京东方科技集团股份有限公司 | Display driving device, display driving method, and display device |
| CN113284470A (en) * | 2021-05-26 | 2021-08-20 | 惠科股份有限公司 | Common voltage compensation method and liquid crystal display device |
| CN113808515A (en) * | 2021-09-23 | 2021-12-17 | 惠科股份有限公司 | Common electrode structure, driving method and display device |
| CN114550665A (en) * | 2020-11-24 | 2022-05-27 | 京东方科技集团股份有限公司 | Liquid crystal display device, driving system thereof and driving method thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100685921B1 (en) * | 2001-10-13 | 2007-02-23 | 엘지.필립스 엘시디 주식회사 | Driving method of ferroelectric liquid crystal display device |
| JP5370214B2 (en) * | 2010-02-25 | 2013-12-18 | セイコーエプソン株式会社 | Video processing circuit, video processing method, liquid crystal display device, and electronic apparatus |
| US9761187B2 (en) * | 2012-10-02 | 2017-09-12 | Sharp Kabushiki Kaisha | Liquid crystal display device and method for driving same |
| KR102485558B1 (en) * | 2015-08-17 | 2023-01-09 | 삼성디스플레이 주식회사 | Timing controller, display apparatus including the same and method of driving the display apparatus |
| KR102508446B1 (en) * | 2015-12-31 | 2023-03-10 | 삼성디스플레이 주식회사 | Display apparatus and method of operating the same |
| KR102541709B1 (en) * | 2016-04-04 | 2023-06-13 | 삼성디스플레이 주식회사 | Method of driving display panel and display apparatus for performing the method |
-
2022
- 2022-10-18 CN CN202211272995.8A patent/CN115512667B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103676395A (en) * | 2012-09-14 | 2014-03-26 | Nlt科技股份有限公司 | Electrophoretic display device and driving method thereof |
| CN107886911A (en) * | 2016-09-30 | 2018-04-06 | 乐金显示有限公司 | Liquid crystal display and its driving method |
| CN114550665A (en) * | 2020-11-24 | 2022-05-27 | 京东方科技集团股份有限公司 | Liquid crystal display device, driving system thereof and driving method thereof |
| CN112581919A (en) * | 2020-12-14 | 2021-03-30 | 京东方科技集团股份有限公司 | Display driving device, display driving method, and display device |
| CN113284470A (en) * | 2021-05-26 | 2021-08-20 | 惠科股份有限公司 | Common voltage compensation method and liquid crystal display device |
| CN113808515A (en) * | 2021-09-23 | 2021-12-17 | 惠科股份有限公司 | Common electrode structure, driving method and display device |
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