JP2008262105A - Overdrive method for display in multi-frame polarity inversion manner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an overdrive method for a display in a multi-frame polarity inversion manner. <P>SOLUTION: A frame-rate input is increased in a frame period of a display panel, which thereby segments the frame period into at least a first voltage control period and a second voltage control period. In the first voltage control period, luminance display is controlled by a first grayscale code. The first grayscale code corresponds to a first voltage value. In the second voltage control period following the first voltage control period, luminance display is controlled by a second grayscale code. The second grayscale code corresponds to a second voltage to drive the display panel, and the second voltage is in the same polarity as the first voltage. Thereby, the voltage is driven to quickly reach a level required by the panel luminance display, grayscale loss on the panel is decreased and a problem of insufficient luminance is solved. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a multi-frame polarity reversal overdrive method for a kind of display. In particular, the present invention relates to a multi-frame polarity reversal overdrive method for a display that improves a kind of frame rate input and has the same polarity of voltage in each voltage control period in the same frame.

Technological advancements and updates are making displays more compact and lightweight. In particular, liquid crystal displays have the advantages of low power consumption, light weight, thinness, no radiation, no flashing, etc., so they are applied to the screens of digital TVs, notebook PCs and computers, and are gradually becoming mainstream in the display industry is there. However, the display has limitations and disadvantages due to the limitations of the characteristics of liquid crystal molecules such as the stiffening coefficient, elastic modulus, and conduction coefficient.
Normally, when the display speed of the screen exceeds 25 frames per second, the human eye sees the screen that the person sees as a continuous operation, but the current image display speed is more than 60 frames per second, action video, It meets the needs of games or high quality DVD videos. In the luminance display of the liquid crystal panel, a voltage is applied to the liquid crystal cell (Cell) to rotate the liquid crystal molecules, thereby changing the light beam passage ratio of the backlight module. When driving the reaction of liquid crystal molecules by voltage, a response time is required, so one of the technologies to increase the drive voltage and shorten the liquid crystal display reaction time without modifying the display panel structure is It is called "Overdrive (OD) technology".

An example will be described below with reference to FIG.
If the brightness that the display panel is to display in frame N and frame N + 1 is the target code, the voltage change to which it corresponds corresponds to the curve indicated by reference numeral 61. With overdrive technology
When the frame is N, an overdrive gray scale code (OD code) is input and used as a substitute for the target code. A voltage change corresponding to the overdrive gray scale code is indicated by reference numeral 62. As a result, the brightness to be displayed on the panel can be quickly achieved.
After proceeding to frame N + 1, the target code achieves the required brightness by driving the liquid crystal panel according to the corresponding voltage. Among them, when the voltage of the display electrode is higher than the reference voltage Vcom of the liquid crystal panel, it is called positive polarity and the opposite is called negative polarity. When a common voltage is used and AC driving is performed, a positive / negative voltage alternation situation occurs, which is called polarity inversion.

There are four types of traditional polarity inversion methods, which are shown in FIGS. 9, 10, 11, and 12, respectively.
When the frame inversion shown in FIG. 9 is changed from frame N to frame N + 1, the in-area electrode property of the entire surface changes from positive polarity to negative polarity as shown in the figure, and the polarity change is The unit is the face.
The column inversion (line inversion) shown in FIG. 10 changes the polarity in units of lines.
The modification of the polarity of Row inversion (row inversion) shown in FIG. 11 is performed in units of rows.
The modification of the polarity of Dot inversion shown in FIG. 12 is in units of points.
In order to meet the needs of high-end high-speed image processing, companies involved in the liquid crystal display area have developed display panels with a high frame rate, changed the structure of the liquid crystal panel, and changed the frame rate from 60 Hz. The update speed has been increased to include 70Hz, 80Hz and 120Hz frames.
The voltage and gray scale code changes are shown in FIG. Among them, the voltage change originally at the frame rate of 60 Hz is within the dotted line range of 81, 81 ′, but after the voltage is driven by the accelerated 120 Hz, the capacitor charging / discharging and maintaining time is reduced by half. . That is, the original first frame period 82 is divided into a frame period N and a frame period N ′. During the frame period N, the OD code (overdrive grayscale code) drive is performed, and the voltage change curve is as indicated by reference numeral 83. The voltage becomes positive. In the frame period N ′, the liquid crystal molecules are driven by the target code, and at the same time, the voltage polarity is reversed to the negative polarity. The voltage change curve is shown at 84.

However, by increasing the frame rate and shortening the reaction time, the panel charging time is insufficient.
If the panel is driven by OD code in the first frame period 82 when the frame rate is 60 Hz, the voltage change curve is indicated by reference numeral 85. Although the rate of increase of the voltage change curve of 83 is faster than that of the voltage change curve of 85, the charge / discharge voltage is insufficient and the voltage required by the luminance cannot be achieved. There is also a problem in the frame period N ′. That is, the voltage change curve 84 cannot achieve the voltage change curve 81 ′ that the target code corresponds to, causing gray level loss, failing to achieve the expected display brightness, and the problem of uneven brightness. Occur. In particular, the polarity of each adjacent frame is opposite and there is a relatively high voltage difference, resulting in a situation where all the voltages of each frame cannot achieve the expected voltage.
Furthermore, when the high frame rate is performed, the feed-through effect in which the capacitor charging / discharging effect occurs causes the voltage change curve to have a peak shape indicated by reference numeral 831 and a curve change in which the voltage indicated by reference numeral 832 decreases. At the same time, when the Vcom value is lower than the data center value and the AC drive voltage is long and off-set, the screen will flicker or image sticking will occur, and the voltage charge will be insufficient. In this case, half of the screen in the entire panel becomes dark or the brightness of the luminance on both sides varies along the gate polar line.

In addition, the voltage value is held by the capacitor after the liquid crystal display is charged, and the panel brightness is maintained until the next screen update. This type of image display method is called a hold type. However, if the reaction speed of the liquid crystal molecules is not sufficiently high, the image of the previous screen and the image of the next screen appear on the display in an overlapping manner, and the image is not clear, that is, an afterimage phenomenon occurs.
In order to solve this problem, the advantage of the impulse type image display method of the CRT display is taken in, and the image data is displayed by the pseudo impulse type technique operated on the liquid crystal display.
The main method is to insert black data or black screen into the continuous image screen, or insert black screen signal into the backlight, thereby flashing the backlight, achieving the effect of simulated CRT image display, and afterimage phenomenon to erase.

However, as shown in FIG. 14, when applying the high frame rate technology to the simulated impulse image display method, if the gray scale code and the voltage change curve are the situation shown by reference numerals 91 and 92, respectively, the gray scale Code 0 produces a completely black, non-luminous black screen. However, if the charging time is insufficient and the voltage under the high frame rate state is clearly insufficient, the voltage change curve 91 cannot achieve the voltage change curve under the general frame rate indicated by reference numeral 93. In addition, gray scale value loss and luminance non-uniformity are caused. As a result, the display causes a phenomenon of flickering or image sticking.
Furthermore, in order to raise a display panel with a traditional 60 Hz display rate to a display rate of 60 Hz or higher, it is necessary to change hardware structure equipment such as installing a double gate driver or data driver. However, this is a limit to data-line or turn-on resisters, and doubles the material, manpower, and time costs spent in the manufacturing or design process. It will be higher than that.

The main object of the present invention is to provide a multi-frame polarity reversal overdrive method for the display, which allows the existing display structure to be reserved and used, improves the luminance expression without the need to change or upgrade the hardware equipment, It is possible to reduce the scale value loss, thereby lowering the production cost and improving the competitiveness.
Another object of the present invention is to provide a multi-frame polarity reversal overdrive method for a display, to improve a frame-rate input of a frame period, and to divide into at least two voltage control periods. The voltage of each voltage control period is set to the same polarity, the voltage difference is shortened, and the brightness display is achieved quickly.
A further object of the present invention is to provide a multi-frame polarity reversal overdrive method for a display, which is applicable to a simulated impulse display, reduces gray scale loss, and solves the problem of insufficient brightness.
The present invention provides a multi-frame polarity reversal overdrive method for a display which solves the problems of the above structure.

In order to solve the above problems, the present invention provides the following multi-frame polarity reversal overdrive method for display.
The multi-frame polarity reversal overdrive method of the display of the present invention mainly includes:
The frame process received by the display panel is defined as a frame period, and the frame-rate input of the frame period is increased so that the frame period is divided into at least two voltage control periods, that is, a first voltage. Including a control period and a second voltage control period,
In the first voltage control period, the display of luminance is controlled by the first gray scale code (code), thereby driving the first gray scale code corresponding to the first voltage value of the display panel,
Subsequently, the second voltage control period immediately follows the first voltage control period, and in the second voltage control period, the display of luminance is controlled by the second gray scale code, whereby the second voltage value of the display panel is controlled. Driving the corresponding second grayscale code,
The second voltage value and the first voltage value have the same polarity, so that the present invention does not need to change the traditional hardware structure and does not cause a duty-free burden. This is a multi-frame polarity reversal overdrive method for the display.

  As described above, the present invention does not require modification of the existing display hardware structure, the voltage charging process is improved, and correspondingly, the problem of lack of brightness and grayscale loss can be reduced. There is no duty-free. In addition, the method of applying a voltage provided by the present invention can effectively reduce the problem of the traditional polarity inversion voltage difference excessively, and can efficiently achieve the brightness that the panel is to display. In addition, the display area brightness compensation method provided by the present invention can improve the problem of brightness non-uniformity in the display manufacturing process.

The method used by the present invention is performed in the structure of a traditional display panel, and it is not necessary to change the hardware structure. Assume the following. In other words, the display panel is composed of a plurality of display units. In the liquid crystal screen, each display unit is also called a pixel, and each display unit displays a change in luminance by changing the voltage value, and the magnitude of the voltage value is driven. It is determined by the gray scale code of the display unit.
First, as shown in FIG. 1, which is a first embodiment of the multi-frame polarity inversion overdrive method of the present invention, the display unit receives four frames, and the luminance to be displayed by each frame is a target code (Target code) and the frame process received by the display panel display unit is the frame period.

  In the present embodiment, the frame-rate input is increased, for example, the code of the first frame period is 111, the frame rate input is doubled, and the original 60 Hz frame rate is increased to the 120 Hz frame rate. At this time, the original first frame period 111 is divided into two voltage control periods N and N ′, and in the first voltage control period N, an overdrive gray scale code (OD code) higher than the target code (Target code). Is the first grayscale code, which provides the overdrive with the first voltage value corresponding to the OD code received by the display unit. As is clear from the figure, the voltage change range to which the target code corresponds is in the straight line between the reference numerals 112 and 112 ', and the voltage change displayed by the overdrive grayscale code under the original 60 Hz frame rate is the sign. Shown in 113 dotted lines. The voltage change that actually occurs when the doubled input frame rate reaches 120 Hz is indicated by a curve 114. Due to the shortage of charging time, the voltage change of reference numeral 114 cannot achieve the voltage change curve displayed by reference numeral 113.

  After the end of the first voltage control period N, subsequently, in the second voltage control period N ′ of the first frame period 111, a second voltage value having the same polarity as the first voltage value is input to the display unit. In this embodiment, since the OD code has already made the voltage received by the display unit higher than the voltage corresponding to the Target code, after proceeding to the second voltage control period N ′ of the first frame period 111, the first frame period A target code 111 is a second grayscale code, and a second voltage value corresponding to the second grayscale code is a voltage of the input. In particular, the second voltage value has the same polarity as the first voltage value in the first voltage control period N ′ by polarity control, and the first voltage value corresponding to the OD code is close to the voltage corresponding to the Target code. Therefore, the actual voltage curve change in the second voltage control period N ′ (see reference numeral 114) quickly reaches the voltage curve corresponding to the target code (reference numeral 112), and thus the display panel achieves the expected display brightness. To do. The important point is that it does not increase the duty-free.

  Subsequently, when the next frame period is entered (ie, the second frame period 115), the display unit receives a voltage corresponding to the Target code. Due to the increase in the frame rate, a voltage deficiency phenomenon may occur in the period N + 1 immediately before the second frame period 115. However, since the pressure into the frame N + 1 is not larger than the positive frame N ′, the voltage change curve also approaches the voltage change curve 112 ′ corresponding to the Target code, and once the period following the second frame period 115 Entering N + 1 ′ supplements the undervoltage, achieves the voltage required by the display brightness, reduces gray scale loss, and solves the problem of insufficient brightness.

Next, as shown in FIG. 2 which is a second embodiment of the multi-frame polarity inversion overdrive method of the present invention, the display unit receives four frames, and the luminance to be displayed by each frame is a target code (Target code), and the voltage change range that it is going to reach is indicated by straight lines 121 and 121 ′. When the frame rate is a general frame rate such as 60 Hz in the first frame period 122, the input OD code is indicated by a dotted line denoted by reference numeral 123, and the corresponding voltage is a dotted line denoted by reference numeral 124.
In the present embodiment, the frame rate input by the first frame period 122 is doubled, such as from 60 Hz to 120 Hz, and the original first frame period 122 includes the first voltage control period N and the second voltage control. Divided into periods N ′. In the first voltage control period N, the overdrive code (OD code) is the first gray scale code, and the voltage change indicated by the first voltage value corresponding to the first gray scale code is indicated by reference numeral 125. In a result similar to the first embodiment, the voltage cannot achieve the voltage change curve indicated by reference numeral 124 due to insufficient charging time.

However, after the first voltage control period N ends, the second voltage control period N ′ that follows the second voltage value having the same polarity as the first voltage value is input to the display unit. In the present embodiment, the first voltage value corresponding to the OD code has already brought the display unit close to the voltage change (curve indicated by reference numeral 124) at which 60 Hz is about to reach, so the overdrive code (first frame period 122) OD code) corresponds to the second voltage value, and in particular, the second voltage value has the same polarity as the first voltage value of the first voltage control period N by polarity control. At this time, the actual voltage curve change (indicated by reference numeral 126) in the second voltage control period N ′ quickly achieves the voltage curve (indicated by reference numeral 124) corresponding to the OD code, and the display panel displays the expected display brightness. To achieve.
Subsequently, when the next frame period is entered (ie, the second frame period of reference numeral 127), the display unit receives a voltage corresponding to the Target code. The ideal voltage change curve is indicated by dotted lines 121 and 121 ′. Due to the increase in the frame rate, a voltage shortage may occur in the period N + 1 immediately before the second frame period 127. However, once entering the next period N + 1 ′ after the second frame period 127, the insufficient voltage is supplemented to achieve the voltage required by the display brightness, reducing the gray scale loss, and the problem of insufficient brightness. Can be solved.

Subsequently, as shown in FIG. 3, in the third embodiment of the multi-frame polarity reversal overdrive method of the present invention, the display unit receives four frames in succession, and the luminance to be displayed by each frame is the target. Display by code (Target code). The voltage change range to be achieved is indicated by a straight line 131, 131 ', and the frame rate input by the first frame period 132 is doubled, such as by increasing 60Hz to 120Hz. The frame period 132 is divided into a first voltage control period N and a second voltage control period N ′. In the first voltage control period N, the target code of the frame is set as the first gray scale code 137 to drive the display unit, and corresponds to the first gray scale code 137, and also drives the display panel. As the voltage change indicated by one voltage value is indicated by reference numeral 133, the charging time is insufficient, so that the voltage cannot achieve the voltage change curve indicated by reference numeral 131.
However, after the end of the first voltage control period N, in the subsequent second voltage control period N ′, the display of luminance is controlled by the second gray scale code 138, and the second gray scale code 138 is an overdrive gray scale code (OD code) to over-drive the display panel. The second voltage value and the second gray scale code 138 correspond to each other and exceed the voltage required by the target code, that is, the voltage change curve (shown by reference numeral 134) to which the second voltage value corresponds corresponds to the reference numeral 131. In particular, the second voltage value and the first voltage value have a similar polarity. Accordingly, when the second frame period 135 is entered from the first frame period 132, the voltage change curve 136 is closer to the voltage change curve 131 of the luminance to be displayed on the display panel.

As shown in FIG. 4, the fourth embodiment of the multi-frame polarity reversal overdrive method of the present invention extends from the third embodiment, and the first frame period 141 is set to the first voltage control period N and the acceleration frame rate. The first and second voltage control periods N and N ′ are controlled by the first grayscale code 143 and the second grayscale code 144, respectively, and the first grayscale code 143 is divided into the second voltage control period N ′. Is the target code of the frame, and the second grayscale code 144 is an overdrive grayscale code (OD code).
Since the first frame period 141 may be insufficiently charged, after entering the second frame period 142, the input is increased according to the frame rate, so that the second frame period 142 has the third voltage control period N + 1 and the second voltage control period N + 1. It is divided into four voltage control periods N + 1 ′. In the third and fourth voltage control periods N + 1 and N + 1 ′, the display of the brightness is controlled by the third gray scale code 145 and the fourth gray scale code 146, respectively, and the third voltage value and the second voltage driving the display panel are controlled. Four voltage values correspond to the third gray scale code 145 and the fourth gray scale code 146, respectively.
The difference of this embodiment from the third embodiment is as follows.
The third gray scale code 145 is the target code of the frame as opposed to the first gray scale code 143, and the fourth gray scale code 146 is the second gray scale code 144 of the second voltage control period N ′. A feedback overdrive gray scale code (feedback OD code) that adjusts based on the same causes the fourth gray scale code 146 to overdrive the display panel as well. However, since the next overdrive has already been performed in the previous voltage control period 141, the fourth grayscale code 146 in the fourth voltage control period N + 1 ′ is appropriately smaller than the second grayscale code 144. And close to the target code. In particular, the third and fourth voltage values corresponding to the third and fourth gray scale codes 145 and 146 have the same polarity, but the voltage value polarities of the first voltage control period 141 and the second voltage control period 142 are contradictory. Also, the polarities of the first and second voltage values and the third and fourth voltage values are contradictory. Thus, the state of insufficient charging can be improved by the technique of this embodiment.

The present invention can be applied to simulated impulse technology. As shown in FIG. 5, which is a fifth embodiment of the multi-frame polarity inversion overdrive method of the present invention, in the first voltage control period N, N + 1, N + 2, N + 3, the first grayscale code (code) controls the display of luminance, the first voltage value corresponds to the first grayscale code, and the second voltage control periods N ′, N + 1 ′, N + 2 ′, N + 3 ′ Immediately following one voltage control period N, N + 1, N + 2, N + 3, the second voltage control period N ', N + 1', N + 2 ', N + 3' is the second grayscale code The brightness display is controlled. Similarly, the second voltage value corresponds to the second gray scale code, and the second voltage value and the first voltage value are of the same polarity.
The difference of the present embodiment from the above embodiment is as follows.
After the end of the first voltage control period N, the subsequent second voltage control period N ′ inputs a second voltage value having the same polarity as the first voltage value in the first voltage control period to the display unit. The second voltage value is a voltage that changes the color of the display panel to black. The gray scale code code 0 of the display produces a completely black, non-luminous black screen, but in the actual application of the present invention, the gray scale code of the liquid crystal display is regarded as a black screen below a certain numerical value such as code 5 to 10. Can do. In the following description, a black screen or a voltage that darkens the screen by code 0, in particular, the second voltage value is the same polarity as the second voltage value of the first voltage control period N by polarity control, The voltage curve change is indicated by reference numeral 31.

In this embodiment, a gray scale code (Pre code) or a target code (Target) set in advance in the first voltage control periods N, N + 1, N + 2, and N + 3 of each frame period 32, 33, 34, and 35. code) to make the first grayscale code. Subsequently, code 0 is added in the second voltage control period N ′, N + 1 ′, N + 2 ′, N + 3 ′. In addition, in the first voltage control periods N, N + 1, N + 2, and N + 3, an OD code having an overdrive effect added in the above embodiment can be used as the first gray scale code. .
Both the high frame rate technology and the method of the present invention can reduce the frame period, and thus may cause a problem of insufficient brightness due to insufficient reaction time or insufficient charge time. At this time, one of the methods for increasing the brightness is to increase the liquid crystal cell gap (cell-gap) of the display panel, but this is caused by changing the structure of the liquid crystal cell and adding a frame during the panel manufacturing process. In order to avoid the problems of liquid crystal cell gap mismatch and brightness non-uniformity, the present invention submits another method. It is charging voltage compensation, which makes the panel brightness uniform. The charge pressure compensation is adjusted according to the difference in the brightness display on the display panel. First, in the charge pressure compensation method, the display panel is divided into a plurality of compensation sections, and at least one compensation gray scale value is set in each compensation section, and each compensation gray scale value depends on the brightness of the measured display panel. obtain.
For example, the display panel is subjected to pressure by applying a frame, and the liquid crystal cell gap after the pressure is applied becomes smaller and the luminance is lowered. In other words, the compensation gray scale value of the compensation zone around the panel is increased. On the other hand, when the center of the display panel protrudes slightly by adding a frame around the panel, the liquid crystal cell gap increases and the brightness increases. That is, the compensation gray scale value of the compensation zone at the center of the panel is appropriately lowered. As described above, the magnitude of the compensation gray scale value of each compensation zone shows a gradient change arrangement even when viewed from the left to the right or from the top to the bottom.

The compensation gray scale value of each compensation zone is stored in a look-up table and is accessed thereby. When performing the method of the present invention and entering the second voltage control period, the compensation gray scale value is taken out from the comparison table according to the difference of each compensation section, and the drive gray scale value of the second voltage control period is increased. Unchanged or reduced. As shown in FIG. 6 as an example, after entering the second voltage control period N ′ of the first frame period, the compensation grayscale value of the comparison table and the second grayscale code of the second voltage control period N ′ are combined, The second voltage value (voltage change curve indicated by reference numeral 41) displayed in the second voltage control period N ′ is higher than the voltage corresponding to the target code (voltage change curve indicated by reference numeral 42). That is, the grayscale code here combines with a relatively large compensation grayscale value, thereby increasing the brightness of the panel.
The compensation section of the charge pressure compensation of the present invention is a rectangular or linear arrangement. When the compensation section is a rectangular section, the panel 51 is divided into approximately nine compensation sections 52 as shown in FIG. If necessary, it can be further subdivided, for example, in units of 32 (pixels) X32 (pixels) or 64 (pixels) X64 (pixels), and the luminance display can be made closer to the original screen.
If the compensation section of the charge pressure compensation is a linear arrangement, the brightness can be measured along the gate polar line to obtain more compensation grayscale values, and the panel brightness compensation can be made more accurate. .
Although the present invention is mainly described with reference to a liquid crystal display, the present invention can be applied to an organic light emitting diode (OLED) display, a plasma display (PDP), or any other suitable display.

It is an instruction diagram of the first embodiment of the present invention. It is instruction | indication figure of 2nd Example of this invention. It is instruction | indication figure of 3rd Example of this invention. It is an instruction figure of the 4th example of the present invention. It is instruction | indication figure of 5th Example of this invention. FIG. 4 is an instruction diagram for performing charging pressure compensation according to the present invention. FIG. 6 is an instruction diagram for dividing a rectangular compensation zone in the panel according to the present invention. It is an instruction diagram of a known display panel overdrive. It is an instruction | indication figure of the surface inversion of a well-known polarity inversion method. It is an instruction diagram of row inversion of a known polarity inversion method. It is an instruction diagram of column inversion of a known polarity inversion method. It is an indication figure of point inversion of a publicly known polarity inversion method. FIG. 6 is an indication diagram of voltage and gray scale code change of a known high frame rate display panel. FIG. 6 is an instruction diagram for applying a high frame rate technique to a simulated impulse image display technique.

Explanation of symbols

111 First frame period
112, 112 'Voltage change range
113, 114 Voltage change curve
115 Second frame period
121, 121 ', 131, 131' Voltage change range
122, 132, 141 First frame period
123 OD code curve
127, 135, 142 Second frame period
124, 125, 126, 133, 134, 136, 31, 41, 42 Voltage change curve
137, 143 1st gray scale code
138, 144 2nd gray scale code
145 3rd gray scale code
146 4th gray scale code
N, N + 1, N + 2, N + 3 First voltage control period
N ', N + 1', N + 2 ', N + 3' Second voltage control period
N + 1 3rd voltage control period
N + 1 'Fourth voltage control period
32, 33, 34, 35 frame periods
51 panels
52 Compensation Zone
N, N + 1 frames
61, 62 Voltage change curve
Vcom reference voltage
81, 81 'Voltage change range line
82 First frame period
83, 84, 85, 92, 93 Voltage change curve
831 Peak of voltage change curve
832 Change in voltage curve
91 Grayscale code change curve

Claims (39)

Main display multi-frame polarity reversal overdrive methods include:
The frame process received by the display panel is defined as a frame period, and the frame-rate input of the frame period is increased, thereby dividing the frame period into at least two voltage control periods.
In the first voltage control period, the display of brightness is controlled by the first gray scale code (code), thereby driving the first gray scale code corresponding to the first voltage value of the display panel,
The second voltage control period immediately follows the first voltage control period, and in the second voltage control period, the display of luminance is controlled by the second gray scale code, whereby the second voltage value of the display panel corresponds to the corresponding voltage value. A multi-frame polarity inversion overdrive method for a display, wherein a second gray scale code is driven, and the second voltage value and the first voltage value have the same polarity.   2. The method of claim 1, wherein the first gray scale code over-drives the display panel.   3. The method of claim 2, wherein the second voltage value achieves a voltage required by a target code of the frame.   The method of claim 2, wherein the second voltage value is a voltage required by an overdrive gray scale code (OD code) of the frame.   The method of claim 2, wherein the second voltage value exceeds a voltage required by an overdrive gray scale code (OD code) of the frame.   3. The display multi-frame polarity inversion overdrive method according to claim 1, wherein the second voltage value is a voltage for changing the color of the display panel to black.   2. The display according to claim 1, wherein the multi-frame polarity reversal overdrive method of the display further performs charging voltage compensation on the display panel according to a difference in luminance display to make the luminance display uniform. Multi-frame polarity reversal overdrive method.   8. The charging pressure compensation method is characterized in that the display panel is divided into a plurality of compensation sections, and at least one compensation gray scale code is installed in each compensation section to increase or decrease the luminance. Multi-frame polarity reversal overdrive method for the described display. 9. The display multiframe polarity inversion overdrive method according to claim 8, wherein the compensation grayscale code of each compensation section is arranged according to a gradient change.   9. The method of claim 8, wherein the compensation grayscale code of each compensation zone is stored in and accessed by at least one look-up table.   9. The display multiframe polarity inversion overdrive method according to claim 8, wherein the compensation section is rectangular. 9. The method of claim 8, wherein the compensation section exhibits a linear arrangement.   8. The display multi-frame polarity inversion overdrive method according to claim 7, wherein the value of the charging pressure compensation is obtained from an actual display panel.   The method of claim 1, wherein the display is a liquid crystal display, an organic light emitting diode (OLED) display, or a plasma display (PDP). Mainly the display multi-frame polarity reversal overdrive method includes the following methods:
The frame process received by the display panel is defined as a frame period, and the frame-rate input of the frame period is increased, thereby dividing the frame period into at least two voltage control periods.
In the first voltage control period, the display of brightness is controlled by the first gray scale code, and the first gray scale code overdrives the display panel, thereby the first voltage value of the display panel. Drive the corresponding first grayscale code,
The second voltage control period immediately follows the first voltage control period, and in the second voltage control period, the display of luminance is controlled by the second gray scale code, whereby the second voltage value of the display panel corresponds to the corresponding voltage value. A multi-frame polarity inversion overdrive method for a display, wherein a second gray scale code is driven, and the second voltage value and the first voltage value have the same polarity.   The method of claim 15, wherein the second voltage value is a voltage required by a target code of the frame.   The method of claim 15, wherein the second voltage value is a voltage required by an overdrive gray scale code (OD code) of the frame.   The method of claim 15, wherein the second voltage value exceeds a voltage required by an overdrive gray scale code (OD code) of the frame.   The method of claim 15, wherein the second voltage value is a voltage that causes the display panel to turn black.   The multi-frame polarity reversal overdrive method of the display further performs charging voltage compensation according to the difference in luminance display on the display panel to make the luminance display uniform, and the charging voltage compensation method is to compensate the display panel with a plurality of compensations. 16. The display multi-frame polarity reversal overdrive method according to claim 15, wherein the brightness is increased or decreased by dividing each section into at least one compensation gray scale code.   21. The multi-frame polarity reversal overdrive method according to claim 20, wherein the compensation gray scale code of each compensation section is arranged according to a gradient change.   21. The method of claim 20, wherein the compensation grayscale code of each compensation zone is stored in and accessed by at least one look-up table.   21. The multi-frame polarity inversion overdrive method for a display according to claim 20, wherein the compensation section has a rectangular shape.   21. The method of claim 20, wherein the compensation section exhibits a linear arrangement.   21. The display multi-frame polarity inversion overdrive method according to claim 20, wherein the charging pressure compensation value is obtained by an actual display panel.   The method of claim 15, wherein the display is a liquid crystal display, an organic light emitting diode (OLED) display, or a plasma display (PDP). Mainly the display multi-frame polarity reversal overdrive method includes the following methods:
The frame process received by the display panel is defined as a frame period, and the frame-rate input of the frame period is increased, thereby dividing the frame period into at least two voltage control periods.
In the first voltage control period, the display of brightness is controlled by the first gray scale code (code), thereby driving the first gray scale code corresponding to the first voltage value of the display panel,
The second voltage control period immediately follows the first voltage control period, and in the second voltage control period, the display of luminance is controlled by the second gray scale code, whereby the second voltage value of the display panel corresponds to the corresponding voltage value. A second multi-frame display, wherein the second voltage value is a voltage that causes the display panel to turn black, and the second voltage value and the first voltage value have the same polarity. Polarity reversal overdrive method.   28. The method of claim 27, wherein the first gray scale code over-drives the display panel.   The multi-frame polarity reversal overdrive method of the display further performs charging voltage compensation according to the difference in luminance display on the display panel to make the luminance display uniform, and the charging voltage compensation method is to compensate the display panel with a plurality of compensations. 28. The multi-frame polarity inversion overdrive method for display according to claim 27, wherein the display is divided into sections, and at least one compensation gray scale code is installed in each compensation section to increase or decrease brightness.   30. The method of claim 29, wherein the compensation grayscale code of each compensation zone is arranged according to a gradient change.   30. The method of claim 29, wherein the compensation grayscale code of each compensation zone is stored in and accessed by at least one look-up table.   30. The multiframe polarity reversal overdrive method of a display according to claim 29, wherein the compensation section is rectangular.   30. The method of claim 29, wherein the compensation section exhibits a linear arrangement.   30. The display multi-frame polarity inversion overdrive method according to claim 29, wherein the charging pressure compensation value is obtained by an actual display panel.   The method of claim 27, wherein the display is a liquid crystal display, an organic light emitting diode (OLED) display, or a plasma display (PDP). Main display multi-frame polarity reversal overdrive methods include:
The frame process received by the display panel is defined as a frame period, and the frame-rate input of the frame period is increased so that the frame period is divided into at least two voltage control periods, that is, a first voltage. Including a control period and a second voltage control period,
In the first voltage control period, the display of luminance is controlled by the first gray scale code, and the first gray scale code becomes the target code of the frame, whereby the first voltage value of the display panel is set. Driving the corresponding first grayscale code, the first voltage value reaches the voltage required by the target code of the frame;
The second voltage control period immediately follows the first voltage control period, and in the second voltage control period, the brightness display is controlled by the second gray scale code, and the second gray scale code is overdriven to the display panel. This causes the second voltage value of the display panel to drive the corresponding second grayscale code, which requires the frame's overdrive grayscale code (OD code). A multi-frame polarity reversal overdrive method for a display, wherein the second voltage value and the first voltage value have the same polarity.   When the frame period ends and the next frame period starts, the frame-rate input of the frame period is similarly improved, and the next frame period includes at least two third and fourth voltage control periods. The voltage control period is divided into three voltage control periods, the third and fourth voltage control periods control the display of luminance by the third gray scale code and the fourth gray scale code, respectively, and the third voltage value and the fourth voltage value are respectively The display panel is driven corresponding to the third gray scale code and the fourth gray scale code, and the third voltage value and the fourth voltage value have the same polarity, but the first voltage value and the second voltage value have the same polarity. 37. A method of multi-frame polarity reversal overdrive of a display as claimed in claim 36, which is the opposite.   The method of claim 37, wherein the third grayscale code is a target code of the frame.   The fourth gray scale code is adjusted based on the second gray scale code of the second voltage control period, and the display panel is an over-drive feedback over drive gray scale code (feedback OD code). 38. The multiframe polarity reversal overdrive method for display according to claim 37.

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