WO2019061762A1 - Driving method for display device and display device - Google Patents
Driving method for display device and display device Download PDFInfo
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- WO2019061762A1 WO2019061762A1 PCT/CN2017/112445 CN2017112445W WO2019061762A1 WO 2019061762 A1 WO2019061762 A1 WO 2019061762A1 CN 2017112445 W CN2017112445 W CN 2017112445W WO 2019061762 A1 WO2019061762 A1 WO 2019061762A1
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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
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
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- the present invention relates to the field of display technologies, and in particular, to a driving method and a display device for a display device.
- FIG. 5 is a schematic flow chart of a driving method of a display device of the present invention.
- FIG. 2 is a circuit diagram of a conventional scan driving circuit.
- Data is the data driving signal
- Gate1 is the charging scanning signal
- control transistor T1 charges A point
- Gate2 is the discharging scanning signal
- control transistor T3 discharges to point A
- Vref is the reference voltage, about zero
- point A Output two Gamma voltages, namely GM1 (brightest) and GM9 (darkest) voltage levels, according to the transistor current voltage IV equation:
- the actual brightness change curve of the RGBWAMOLED (1366x768) panel driven by CSOT15 is shown. It can be seen from Fig. 4 that the brightness is unstable due to insufficient charging, and the longer the illumination time of the subfield, the higher the brightness amplitude. High, the SG6, SF7, and SF8 sub-fields have shorter illuminating time than the response time, causing the discharge time to start before the response time is over, and the brightness amplitude is much lower than the target gray-scale brightness.
- the illumination time of the seventh subfield SF7 is located in front of the time of the seventh subfield SF7 and is connected to the illumination time of the fourth subfield SF4.
- the illuminating time of the fifth subfield SF5 is located after the time of the fifth subfield SF5, and the illuminating time of the sixth subfield SF6 is located in front of the time of the sixth subfield SF6 and with the fifth subfield SF5 The luminescence time is connected.
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- Control Of Gas Discharge Display Tubes (AREA)
Abstract
Description
本发明涉及显示技术领域，特别是涉及一种显示装置的驱动方法及显示装置。The present invention relates to the field of display technologies, and in particular, to a driving method and a display device for a display device.
现有显示装置的扫描驱动电路(如图1所示)由于驱动晶体管T2长时间工作在饱和区会造成阈值电压漂移，导致面板显示画面产生亮度不均匀，影响显示效果，为改善亮度不均匀以提升显示面板的显示效果，PWM(数位驱动)方式被提出，子场等切方式是目前常用的PWM驱动方式，这种方式可抑制显示装置的亮度不均匀问题，然而现有的PWM驱动方式由于PWM驱动扫描控制芯片打开一行像素的时间仅为原来类比电压驱动的1/N，其中N为bits数，随着面板分辨率增加，一行像素的打开时间会进一步压缩，因此实际显示中存在充电不足造成亮度不稳定问题，同时面板存在响应时间(Response Time，RT)，如果发光占空比最小的子场的发光时间小于响应时间，面板实际未真正达到目标亮度就开始放电了，由于充电不足造成亮度不稳定，子场的发光时间越长，亮度幅值越高，子场的发光时间比响应时间短，造成响应时间还未结束就开始放电，使得亮度幅值远低于目标灰阶亮度。The scanning drive circuit of the existing display device (shown in FIG. 1) causes the threshold voltage to drift due to the long-term operation of the driving transistor T2 in the saturation region, resulting in uneven brightness of the panel display screen, affecting the display effect, and improving brightness unevenness. Improve the display effect of the display panel, PWM (digital drive) mode is proposed, sub-field cut mode is currently used PWM drive mode, this way can suppress the brightness unevenness of the display device, however, the existing PWM drive mode due to The time required for the PWM drive scan control chip to open a row of pixels is only 1/N of the original analog voltage drive, where N is the number of bits. As the resolution of the panel increases, the turn-on time of one row of pixels is further compressed, so there is insufficient charging in the actual display. The problem of brightness instability is caused, and the response time (RT) of the panel is present. If the illumination time of the subfield with the smallest illumination duty cycle is less than the response time, the panel does not actually reach the target brightness and begins to discharge, due to insufficient charging. The brightness is unstable, the longer the illumination time of the subfield, the higher the brightness amplitude, the subfield Response time is shorter than the light, resulting in response time has not started to discharge end, such that the magnitude of the brightness is far lower than the target gray level.
【发明内容】[Summary of the Invention]
本发明主要解决的技术问题是提供一种显示装置的驱动方法及显示装置，以增大亮度幅值，消除充电不足和相应时间对亮度的损耗。The technical problem to be solved by the present invention is to provide a driving method and a display device for a display device to increase the brightness amplitude and eliminate the shortage of charging and the loss of brightness for the corresponding time.
为解决上述技术问题，本发明采用的一个技术方案是：提供一种显示装置的驱动方法，所述驱动方法包括：In order to solve the above technical problem, a technical solution adopted by the present invention is to provide a driving method of a display device, and the driving method includes:
将每一帧画面切分成时间相同的若干子场；Dividing each frame into several subfields of the same time;
通过调整每一子场的发光时间位于对应子场时间的位置使得相邻两个子场的发光时间相连接，以增大亮度幅值。The illumination time of the adjacent two subfields is connected by adjusting the position of the illumination time of each subfield at the corresponding subfield time to increase the luminance amplitude.
为解决上述技术问题，本发明采用的一个技术方案是：提供一种显示装置，所述显示装置通过显示装置的驱动方法驱动，所述驱动方法包括： In order to solve the above technical problem, one technical solution adopted by the present invention is to provide a display device, which is driven by a driving method of a display device, and the driving method includes:
将每一帧画面切分成时间相同的若干子场；Dividing each frame into several subfields of the same time;
通过调整每一子场的发光时间位于对应子场时间的位置使得相邻两个子场的发光时间相连接，以增大亮度幅值。The illumination time of the adjacent two subfields is connected by adjusting the position of the illumination time of each subfield at the corresponding subfield time to increase the luminance amplitude.
本发明的有益效果是：区别于现有技术的情况，本发明通过将每一帧画面切分成时间相同的若干子场，并调整每一子场的发光时间位于对应子场的位置以使得相邻两个子场的发光时间相连接，来增大亮度幅值，以此消除充电不足和响应时间对亮度的损耗。The beneficial effects of the present invention are: different from the prior art, the present invention divides each frame picture into several subfields of the same time, and adjusts the illumination time of each subfield to be located at the position of the corresponding subfield so that the phase The illuminating times of the two adjacent subfields are connected to increase the luminance amplitude, thereby eliminating the loss of charging due to insufficient charging and response time.
图1是现有的扫描驱动电路的电路示意图；1 is a circuit diagram of a conventional scan driving circuit;
图2是现有的PWM驱动方式的扫描驱动电路的电路示意图；2 is a circuit diagram of a conventional PWM driving method of a scan driving circuit;
图3是图2的PWM驱动方式示意图；3 is a schematic diagram of the PWM driving method of FIG. 2;
图4是现有的显示装置PWM驱动下的实际亮度变化曲线示意图；4 is a schematic diagram showing an actual brightness change curve of a conventional display device driven by PWM;
图5是本发明的显示装置的驱动方法的流程示意图；5 is a schematic flow chart of a driving method of a display device of the present invention;
图6是本发明的显示装置的驱动方法的第一实施例的结构示意图；6 is a schematic structural view of a first embodiment of a driving method of a display device of the present invention;
图7是本发明的显示装置的驱动方法的第二实施例的结构示意图；7 is a schematic structural view of a second embodiment of a driving method of a display device of the present invention;
图8是本发明显示装置的结构示意图。Figure 8 is a schematic view showing the structure of a display device of the present invention.
请参阅图2，是现有的扫描驱动电路的电路示意图。其中，Data为数据驱动信号，Gate1为充电扫描信号，控制晶体管T1对A点进行充电，Gate2为放电扫描信号，控制晶体管T3对A点进行放电，Vref为参考电压，约为零，A点处输出两个Gamma电压，即GM1(最亮)和GM9(最暗)两个电压准位，按照晶体管电流电压I-V方程：Please refer to FIG. 2, which is a circuit diagram of a conventional scan driving circuit. Among them, Data is the data driving signal, Gate1 is the charging scanning signal, control transistor T1 charges A point, Gate2 is the discharging scanning signal, control transistor T3 discharges to point A, Vref is the reference voltage, about zero, point A Output two Gamma voltages, namely GM1 (brightest) and GM9 (darkest) voltage levels, according to the transistor current voltage IV equation:
Ids，sat＝k*(Vgs-Vth，T2)2＝k*(VA-VB-Vth，T2)2 Ids, sat=k*(Vgs-Vth,T2) 2 =k*(VA-VB-Vth,T2) 2
其中，Ids，sat为晶体管T2导通电流，k为本征导电因子，Vgs为晶体管T2栅源极电压，Vth为晶体管T2的阈值电压，VA为A点电压，VB为B点电压，由于器件退化或者非一致性导致晶体管的阈值电压Vth的变化量ΔVth相对于(VA-VB)变化较小，因此相对模拟电压驱动方式，PWM驱动方式可抑制亮度不均匀问题。Where Ids, sat is the conduction current of transistor T2, k is the intrinsic conduction factor, Vgs is the gate-to-source voltage of transistor T2, Vth is the threshold voltage of transistor T2, VA is the voltage of point A, VB is the voltage of point B, due to the device The degradation or non-uniformity causes the variation amount ΔVth of the threshold voltage Vth of the transistor to be small with respect to (VA-VB), so that the PWM driving method can suppress the luminance unevenness problem with respect to the analog voltage driving method.
请参阅图3，是现有扫描驱动电路的PWM驱动方式示意图。其中，x轴为 时间，y轴为扫描线的扫描时间。一帧画面被等切成8个时间相同的子场，例如为SF1-SF8，通过控制充电与放电的时间实现像素在不同子场的发光时间不同，8个子场的像素发光时间占空比分别为1∶1、2∶1、4∶1、8∶1、16∶1、32∶1、64∶1、128∶1，以产生PWM亮度信号，结合人眼对亮度的感知是时间积分原理，PWM亮度信号可显示不同的灰阶亮度。如图4所示是CSOT15时RGBWAMOLED(1366x768)面板PWM驱动下的实际亮度变化曲线，从图4中可以看出由于充电不足造成的亮度不稳定，子场的发光时间越长，亮度幅值越高，子场SF6、SF7、SF8的发光时间比响应时间短，造成响应时间还未结束就开始放电了，亮度幅值远低于目标灰阶亮度。Please refer to FIG. 3 , which is a schematic diagram of a PWM driving mode of a conventional scan driving circuit. Where the x-axis is Time, the y-axis is the scan time of the scan line. One frame is equally cut into eight subfields of the same time, for example, SF1-SF8. By controlling the charging and discharging time, the pixel illumination time is different in different subfields, and the pixel illumination time duty ratios of the eight subfields are respectively It is 1:1, 2:1, 4:1, 8:1, 16:1, 32:1, 64:1, 128:1 to generate the PWM luminance signal, combined with the human eye's perception of brightness is the principle of time integration. The PWM luminance signal can display different grayscale brightness. As shown in Fig. 4, the actual brightness change curve of the RGBWAMOLED (1366x768) panel driven by CSOT15 is shown. It can be seen from Fig. 4 that the brightness is unstable due to insufficient charging, and the longer the illumination time of the subfield, the higher the brightness amplitude. High, the SG6, SF7, and SF8 sub-fields have shorter illuminating time than the response time, causing the discharge time to start before the response time is over, and the brightness amplitude is much lower than the target gray-scale brightness.
请参阅图5，是本发明的显示装置的驱动方法的流程示意图。所述显示装置的驱动方法包括如下步骤：Please refer to FIG. 5, which is a schematic flow chart of a driving method of the display device of the present invention. The driving method of the display device includes the following steps:
步骤S1：将每一帧画面切分成时间相同的若干子场；及Step S1: cutting each frame of the picture into several subfields of the same time; and
步骤S2：通过调整每一子场的发光时间位于对应子场时间的位置使得相邻两个子场的发光时间相连接，以增大亮度幅值。Step S2: The illumination time of the adjacent two subfields is connected by adjusting the position of the illumination time of each subfield at the corresponding subfield time to increase the luminance amplitude.
其中，每一子场的发光时间(即每一子场的白色区域，其中，每一子场的白色区域与黑色区域之和组成对应子场时间)位于对应子场时间的前面或者后面，所述若干子场按照第一顺序依次输出或者按照第二顺序依次输出。Wherein, the illumination time of each subfield (ie, the white area of each subfield, wherein the sum of the white area and the black area of each subfield constitutes the corresponding subfield time) is located in front of or behind the corresponding subfield time. The plurality of subfields are sequentially output in the first order or sequentially in the second order.
其中，同一帧画面中按照第一顺序输出每一子场，调整部分子场的发光时间位于所述子场时间的前面，同时调整另一部分子场的发光时间位于所述子场时间的后面。Wherein, each subfield is output in the first sequence in the same frame, and the illumination time of the partial subfield is adjusted to be in front of the subfield time, and the illumination time of the other subfield is adjusted to be located after the subfield time.
请参阅图6，是本发明的显示装置的驱动方法的第一实施例的结构示意图。在本实施例中，所述若干子场包括第一至第八子场SF1-SF8，所述第一子场至第八子场SF1-SF8依次输出，例如，8个子场的输出顺序依次为SF1、SF2、SF3、SF4、SF5、SF6、SF7、SF8。Please refer to FIG. 6, which is a schematic structural view of a first embodiment of a driving method of a display device of the present invention. In this embodiment, the plurality of subfields include first to eighth subfields SF1 to SF8, and the first to eighth subfields SF1 to SF8 are sequentially output. For example, the output order of the eight subfields is SF1, SF2, SF3, SF4, SF5, SF6, SF7, SF8.
其中，所述第一子场SF1的发光时间为所述第一子场SF1时间，所述第二子场SF2的发光时间位于所述第二子场SF2时间的前面且与所述第一子场SF1的发光时间相连接，所述第三子场SF3的发光时间位于所述第三子场SF3时间的后面，所述第四子场SF4的发光时间位于所述第四子场SF4时间的前面且与所述第三子场SF3的发光时间相连接，所述第五子场SF5的发光时间位于所述第五子场SF5时间的后面，所述第六子场SF6的发光时间位于所述第六子场SF6时间的前面且与所述第五子场SF5的发光时间相连接，所述第七子场SF7的发 光时间位于所述第七子场SF7时间的后面，所述第八子场SF8的发光时间位于所述第八子场SF8时间的前面且与所述第七子场SF7的发光时间相连接。The illumination time of the first subfield SF1 is the time of the first subfield SF1, and the illumination time of the second subfield SF2 is located before the time of the second subfield SF2 and with the first sub The illuminating time of the field SF1 is connected, the illuminating time of the third subfield SF3 is located after the time of the third subfield SF3, and the illuminating time of the fourth subfield SF4 is located at the time of the fourth subfield SF4. Frontward and connected to the lighting time of the third subfield SF3, the lighting time of the fifth subfield SF5 is located behind the time of the fifth subfield SF5, and the lighting time of the sixth subfield SF6 is located The front of the sixth subfield SF6 time is connected to the illumination time of the fifth subfield SF5, and the transmission of the seventh subfield SF7 The light time is located after the time of the seventh subfield SF7, and the light emission time of the eighth subfield SF8 is located in front of the time of the eighth subfield SF8 and is connected to the light emission time of the seventh subfield SF7.
在本实施例中，同一帧画面中每一子场的发光时间的占空比依次为2n-1∶1，其中n为正整数，且n小于等于每一帧画面中的子场数。例如，一帧画面被等切成8个时间相同的子场SF1-SF8，通过控制充电与放电的时间实现像素在不同子场的发光时间不同，8个子场SF1-SF8中像素发光时间占空比(即发光时间占用对应子场时间的比例)分别为1∶1、2∶1、4∶1、8∶1、16∶1、32∶1、64∶1、128∶1，以产生PWM亮度信号。In this embodiment, the duty ratio of the illumination time of each subfield in the same frame picture is 2 n-1 : 1, where n is a positive integer, and n is less than or equal to the number of subfields in each frame picture. For example, one frame of picture is equally cut into eight subfields SF1-SF8 with the same time. By controlling the charging and discharging time, the pixel's illumination time in different subfields is different, and the pixel illumination time is occupied in the eight subfields SF1-SF8. The ratio (ie, the ratio of the illuminating time to the corresponding subfield time) is 1:1, 2:1, 4:1, 8:1, 16:1, 32:1, 64:1, 128:1, respectively, to generate PWM. Brightness signal.
下面以8bits驱动为例进行说明：The following takes the 8bits driver as an example:
子场SF1-SF8依次输出时，例如，8个子场的输出顺序依次为SF1、SF2、SF3、SF4、SF5、SF6、SF7、SF8，其中子场SF1到子场SF8的像素发光时间占空比依序减小，通过调整每一子场的发光时间处在对应子场的前面或者后面，相邻子场的发光时间所处的位置不同可以使得相邻子场的发光时间两两相连接。实施例中将子场SF2、SF4、SF6、SF8的发光时间调整至对应子场时间的前面，将子场SF3、SF5、SF7的发光时间调整至对应子场时间的后面，其中子场SF1无不发光时间(即所述子场SF1一直发光，其发光占空比为1∶1)，不需要调整，调整后子场SF1和SF2、SF3与SF4、SF5与SF6、SF7和SF8的发光时间连接在一起，如果相邻子场在同时发光的情况下，本方法从原来有两个响应时间减小为只有一个响应时间，可以有效降低响应时间对亮度的影响，同时发光时间叠加可以增大亮度幅值，有效降低充电不足导致的亮度损耗。When the subfields SF1 - SF8 are sequentially output, for example, the output order of the eight subfields is SF1, SF2, SF3, SF4, SF5, SF6, SF7, SF8, and the pixel illumination time duty ratio of the subfield SF1 to the subfield SF8. By decreasing the illumination time of each subfield in front of or behind the corresponding subfield, the position of the illumination time of the adjacent subfields is different, so that the illumination times of the adjacent subfields are connected in pairs. In the embodiment, the illumination time of the subfields SF2, SF4, SF6, and SF8 is adjusted to the front of the corresponding subfield time, and the illumination time of the subfields SF3, SF5, and SF7 is adjusted to be after the corresponding subfield time, wherein the subfield SF1 is all-inclusive. Illumination time (ie, the subfield SF1 is always illuminated, its illumination duty ratio is 1:1), no adjustment is needed, and the adjusted illumination times of the subfields SF1 and SF2, SF3 and SF4, SF5 and SF6, SF7 and SF8 are connected. Together, if the adjacent subfields are illuminated at the same time, the method has two response times reduced to only one response time, which can effectively reduce the influence of response time on the brightness, and the illumination time superposition can increase the brightness. The amplitude is effective to reduce the brightness loss caused by insufficient charging.
请参阅图7，是本发明的显示装置的驱动方法的第二实施例的结构示意图。所述显示装置的驱动方法的第二实施例与上述第一实施例的区别之处在于：同一帧画面中按照第二顺序输出每一子场，调整部分子场的发光时间位于所述子场时间的前面，同时调整另一部分子场的发光时间位于所述子场时间的后面。Please refer to FIG. 7, which is a schematic structural view of a second embodiment of a driving method of a display device of the present invention. The second embodiment of the driving method of the display device is different from the above-described first embodiment in that each subfield is output in the second frame in the same frame, and the illumination time of the partial subfield is adjusted to be located in the subfield. In front of the time, the illumination time of the other part of the subfield is simultaneously adjusted to be behind the subfield time.
具体地，所述若干子场包括第一至第八子场SF1-SF8，所述第一子场SF1至所述第八子场SF8任意输出，例如8个子场的输出顺序依次为SF1、SF2、SF3、SF8、SF4、SF7、SF5、SF6，在其他实施例中，所述8个子场SF1-SF8的输出顺序并不限定于本实施例的方式，可以根据需要设置每个子场的顺序。Specifically, the plurality of subfields include first to eighth subfields SF1 to SF8, and the first subfield SF1 to the eighth subfield SF8 are arbitrarily outputted, for example, the output order of the eight subfields is SF1 and SF2. SF3, SF8, SF4, SF7, SF5, SF6. In other embodiments, the output order of the eight subfields SF1-SF8 is not limited to the mode of the embodiment, and the order of each subfield may be set as needed.
其中，所述第一子场SF1的发光时间为所述第一子场SF1时间，所述第二子场SF2的发光时间位于所述第二子场SF2时间的前面且与所述第一子场SF1的发光时间相连接，所述第三子场SF3的发光时间位于所述第三子场SF3时间 的后面，所述第八子场SF8的发光时间位于所述第八子场SF8时间的前面且与所述第三子场SF3的发光时间相连接，所述第四子场SF4的发光时间位于所述第四子场SF4时间的后面，所述第七子场SF7的发光时间位于所述第七子场SF7时间的前面且与所述第四子场SF4的发光时间相连接，所述第五子场SF5的发光时间位于所述第五子场SF5时间的后面，所述第六子场SF6的发光时间位于所述第六子场SF6时间的前面且与所述第五子场SF5的发光时间相连接。The illumination time of the first subfield SF1 is the time of the first subfield SF1, and the illumination time of the second subfield SF2 is located before the time of the second subfield SF2 and with the first sub The illuminating time of the field SF1 is connected, and the illuminating time of the third subfield SF3 is located at the time of the third subfield SF3 The illumination time of the eighth subfield SF8 is located in front of the time of the eighth subfield SF8 and is connected to the illumination time of the third subfield SF3, and the illumination time of the fourth subfield SF4 is located. After the fourth subfield SF4 time, the illumination time of the seventh subfield SF7 is located in front of the time of the seventh subfield SF7 and is connected to the illumination time of the fourth subfield SF4. The illuminating time of the fifth subfield SF5 is located after the time of the fifth subfield SF5, and the illuminating time of the sixth subfield SF6 is located in front of the time of the sixth subfield SF6 and with the fifth subfield SF5 The luminescence time is connected.
下面以8bits驱动为例进行说明：The following takes the 8bits driver as an example:
将所述子场SF1-SF8的输出顺序打乱，例如8个子场的输出顺序依次为SF1、SF2、SF3、SF8、SF4、SF7、SF5、SF6，其中子场SF1与SF2、SF3与SF8、SF4与SF7、SF5与SF6的发光时间两两相连接，这样叠加后的发光时间会相对平均一些，由于子场SF7与SF8即使发光时间叠加在一起依然很短，响应时间的影响依然明显，因此将子场SF7与SF4的放光时间相连接，而将子场SF8与SF3的发光时间相连接，以此有效降低响应时间对亮度的影响，同时发光时间叠加可以增大亮度幅值，有效降低充电不足导致的亮度损耗。The output order of the subfields SF1 - SF8 is scrambled, for example, the output order of the eight subfields is SF1, SF2, SF3, SF8, SF4, SF7, SF5, SF6, wherein the subfields SF1 and SF2, SF3 and SF8, The illuminating time of SF4 and SF7, SF5 and SF6 are connected in two phases, so that the illuminating time after superposition is relatively average. Since the subfields SF7 and SF8 are still superimposed even if the illuminating time is superimposed, the influence of response time is still obvious. The subfield SF7 is connected with the SF4 light emission time, and the subfield SF8 is connected with the SF3 illumination time, thereby effectively reducing the influence of the response time on the brightness, and the illumination time superposition can increase the brightness amplitude and effectively reduce Loss of brightness due to insufficient charging.
请参阅图8，是本发明的显示装置的结构示意图。所述显示装置为OLED，所述显示装置通过上述显示装置的驱动方法进行驱动，所述显示装置内其他的器件及功能与现有显示装置的器件及功能相同，在此不再赘述。Please refer to FIG. 8, which is a schematic structural view of a display device of the present invention. The display device is an OLED, and the display device is driven by the driving method of the display device. The other devices and functions in the display device are the same as those of the existing display device, and are not described herein again.
所述显示装置的驱动方法及显示装置通过将每一帧画面切分成时间相同的若干子场，并调整每一子场的发光时间位于对应子场的前面或者后面以使得相邻两个子场的发光时间相连接，来增大亮度幅值，以此消除充电不足和响应时间对亮度的损耗。The driving method and the display device of the display device divide the frame of each frame into several subfields of the same time, and adjust the lighting time of each subfield to be located in front of or behind the corresponding subfield so that the adjacent two subfields The luminescence time is connected to increase the brightness amplitude, thereby eliminating the loss of brightness due to insufficient charging and response time.
以上仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。 The above is only the embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformation made by the specification and the drawings of the present invention may be directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of the present invention.
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| CN112785972A (en) * | 2021-03-08 | 2021-05-11 | 深圳市华星光电半导体显示技术有限公司 | Light emitting device driving circuit, backlight module and display panel |
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