CN115331635A - Display device and display method - Google Patents

Abstract

The display device comprises a liquid crystal display panel, a backlight module, a control circuit, a drive circuit and a waveform generating circuit. The liquid crystal display panel includes a plurality of liquid crystal pixels. The backlight module generates backlight required by the liquid crystal display panel, and the backlight module comprises a plurality of backlight blocks. The control circuit judges the backlight brightness corresponding to each backlight block in the backlight blocks in a frame period according to the input display data and generates a control signal according to the backlight brightness corresponding to the backlight blocks. The driving circuit generates a plurality of driving signals to the backlight module in a frame period according to the control signal. The waveform generating circuit generates a deblurring pulse signal to the backlight module in a frame period. The backlight blocks emit light according to the driving signals when the deblurring pulse signals are at a high potential.

Description

Translated fromChinese

显示设备及显示方法Display device and display method

技术领域technical field

本公开是有关于一种显示设备，特别是一种能够支持区域调光及减少动态模糊的显示设备。The present disclosure relates to a display device, in particular to a display device capable of supporting local dimming and reducing motion blur.

背景技术Background technique

液晶(liquid crystal，LC)显示面板是现今常见的显示面板。液晶显示面板可包含排列成阵列的液晶像素。由于液晶具有特殊的光电特性，因此通过在液晶像素上施加电压，就可以改变液晶的排列方向，从而控制液晶像素的透光率。也就是说，显示设备可根据显示数据调整液晶像素的透光率以及调整背光模块的亮度，以使每个液晶像素呈现出所需的亮度。A liquid crystal (liquid crystal, LC) display panel is a common display panel nowadays. A liquid crystal display panel may include liquid crystal pixels arranged in an array. Because liquid crystals have special photoelectric properties, the alignment direction of liquid crystals can be changed by applying a voltage to the liquid crystal pixels, thereby controlling the light transmittance of the liquid crystal pixels. That is to say, the display device can adjust the light transmittance of the liquid crystal pixels and the brightness of the backlight module according to the display data, so that each liquid crystal pixel can display the required brightness.

由于人眼在追踪画面中的物体运动时，人脑会依据物体移动的速度而预期在物体可能出现的位置上看见物体，然而改变液晶透光率所需的反应时间较长，因此液晶显示面板在呈现动态画面时，常会因为人脑所预期的物体位置与画面中物体位置不同，而产生动态模糊(motion blur)的状况。为了减少动态模糊的问题，现有技术常利用插入黑画面的方式，来避免人眼看到画面中与人脑预期不同的物体位置。此外，为了能够节省液晶显示面板的功耗，现有技术也会对背光模块的发光方式有较为精细的操作。在此情况下，为满足系统的各种需求，液晶显示面板需要在每个帧时间内，对背光模块的驱动电路下达多组指令。再者，为避免呈现画面时出现异常，各组指令的执行时间也必须相互配合，导致驱动电路的操作时序十分复杂，甚至会造成系统的不稳定性。因此如何有效地控制驱动电路及背光模块，已成为本领域有待解决的问题。When the human eye is tracking the movement of the object in the screen, the human brain will expect to see the object at the position where the object may appear according to the moving speed of the object. However, the reaction time required to change the light transmittance of the liquid crystal is long, so the liquid crystal display panel When presenting a dynamic picture, the position of the object expected by the human brain is different from the position of the object in the picture, resulting in motion blur (motion blur). In order to reduce the problem of motion blur, in the prior art, a method of inserting a black frame is often used to prevent human eyes from seeing object positions in the frame that are different from those expected by the human brain. In addition, in order to save the power consumption of the liquid crystal display panel, the prior art also has relatively fine operations on the light emitting mode of the backlight module. In this case, in order to meet various requirements of the system, the liquid crystal display panel needs to issue multiple sets of instructions to the driving circuit of the backlight module within each frame time. Furthermore, in order to avoid abnormality when displaying images, the execution time of each group of instructions must also cooperate with each other, resulting in a very complicated operation sequence of the driving circuit, and even causing system instability. Therefore, how to effectively control the driving circuit and the backlight module has become a problem to be solved in this field.

发明内容Contents of the invention

本公开的一实施例提供一种显示设备，该显示设备包含液晶显示面板、背光模块、控制电路、驱动电路及波形产生电路。液晶显示面板包含多个液晶像素。背光模块用以产生该液晶显示面板所需的背光，该背光模块包含多个背光区块。控制电路用以依据输入显示数据判断在帧周期内，多个背光区块中每一背光区块所对应的背光亮度，并且依据该些背光区块所对应的多个背光亮度产生控制信号。驱动电路用以依据该控制信号在该帧周期内产生多个驱动信号至该背光模块。波形产生电路用以在该帧周期内产生去模糊脉冲信号至该背光模块。其中该背光模块中的多个背光区块是在该去模糊脉冲信号处于高电位时，依据多个驱动信号发光。An embodiment of the present disclosure provides a display device, which includes a liquid crystal display panel, a backlight module, a control circuit, a driving circuit, and a waveform generating circuit. The liquid crystal display panel includes a plurality of liquid crystal pixels. The backlight module is used to generate the backlight required by the liquid crystal display panel, and the backlight module includes a plurality of backlight blocks. The control circuit is used for judging the backlight brightness corresponding to each of the multiple backlight blocks within the frame period according to the input display data, and generating control signals according to the multiple backlight brightnesses corresponding to the backlight blocks. The driving circuit is used for generating a plurality of driving signals to the backlight module within the frame period according to the control signal. The waveform generating circuit is used for generating a blurring pulse signal to the backlight module within the frame period. Wherein the plurality of backlight blocks in the backlight module emit light according to a plurality of driving signals when the deblurring pulse signal is at a high potential.

本公开的另一实施例提供一种显示方法，包含依据输入显示数据判断在帧周期内，背光模块的多个背光区块中每一背光区块所对应的背光亮度，依据多个背光区块所对应的多个背光亮度产生控制信号，利用驱动电路并依据该控制信号在该帧周期内产生多个驱动信号至该背光模块，利用波形产生电路在该帧周期内产生去模糊脉冲信号至该背光模块，在该去模糊脉冲信号处于高电位时，该背光模块依据多个驱动信号产生液晶显示面板所需的背光，及利用该背光模块所产生的背光并通过该液晶显示面板以显示图像。Another embodiment of the present disclosure provides a display method, including judging the backlight brightness corresponding to each backlight block in a plurality of backlight blocks of a backlight module within a frame period according to input display data, and according to a plurality of backlight blocks A plurality of corresponding backlight brightness control signals are generated, a driving circuit is used to generate a plurality of driving signals to the backlight module within the frame period according to the control signal, and a waveform generation circuit is used to generate a deblurring pulse signal to the backlight module within the frame period. A backlight module, when the deblurring pulse signal is at a high potential, the backlight module generates the backlight required by the liquid crystal display panel according to a plurality of driving signals, and uses the backlight generated by the backlight module to display images through the liquid crystal display panel.

本公开的实施例所提供的显示设备及显示方法是利用波形产生电路来产生去模糊脉冲信号，因此可以简化控制电路及驱动电路的操作，从而减少因为控制信号延迟所导致之画面亮度不如预期和/或画面闪烁的异常状况。The display device and display method provided by the embodiments of the present disclosure use the waveform generation circuit to generate the deblurring pulse signal, so the operation of the control circuit and the driving circuit can be simplified, thereby reducing the brightness of the screen caused by the delay of the control signal. /or the abnormal condition that the screen flickers.

附图说明Description of drawings

图1是本公开一实施例的显示设备的示意图。FIG. 1 is a schematic diagram of a display device according to an embodiment of the present disclosure.

图2是操作图1的显示设备的方法流程图。FIG. 2 is a flowchart of a method of operating the display device of FIG. 1 .

图3是在帧周期内，显示设备所产生的信号时序图。FIG. 3 is a timing diagram of signals generated by a display device within a frame period.

图4是在帧周期内，显示设备所产生的另一信号时序图。FIG. 4 is a timing diagram of another signal generated by the display device within a frame period.

具体实施方式Detailed ways

图1是本公开一实施例的显示设备100的示意图。显示设备100包含液晶显示面板110、背光模块120、控制电路130、驱动电路140及波形产生电路150。FIG. 1 is a schematic diagram of adisplay device 100 according to an embodiment of the present disclosure. Thedisplay device 100 includes a liquidcrystal display panel 110 , abacklight module 120 , acontrol circuit 130 , adriving circuit 140 and awaveform generating circuit 150 .

液晶显示面板110包含多个液晶像素，而背光模块120可产生液晶显示面板110所需的背光。在本实施例中，背光模块120可包含多个背光区块1221至122N，且每一个背光区块1221至122N可以被独立地控制，以进行区域调光。举例来说，当要呈现的图像画面中，左上的图像内容亮度较高，而右下的图像内容亮度较低时，显示设备100便可以使位于左上的背光区块1221发出亮度较高的背光，并使位于右下的背光区块122N发出亮度较低的背光，也就是说，背光模块120可以依据所欲呈现的图像内容，使背光区块1221至122N分别提供对应亮度的背光光源，以提高呈现画面时的对比度和/或减少功耗。The liquidcrystal display panel 110 includes a plurality of liquid crystal pixels, and thebacklight module 120 can generate the backlight required by the liquidcrystal display panel 110 . In this embodiment, thebacklight module 120 may include a plurality ofbacklight blocks 1221 to 122N, and each of thebacklight blocks 1221 to 122N may be independently controlled for local dimming. For example, when the image content in the upper left has a higher brightness and the image content in the lower right has a lower brightness in the image screen to be presented, thedisplay device 100 can make thebacklight block 1221 located in the upper left emit a backlight with a higher brightness. , and make thebacklight block 122N located at the lower right emit a backlight with lower brightness. That is to say, thebacklight module 120 can make thebacklight blocks 1221 to 122N respectively provide backlight sources with corresponding brightness according to the content of the image to be presented, so as to Improve contrast and/or reduce power consumption when rendering images.

图2是操作显示设备100的方法200的流程图。方法200可包含步骤S210至S260。FIG. 2 is a flowchart of amethod 200 of operating thedisplay device 100 . Themethod 200 may include steps S210 to S260.

S210：依据输入显示数据DI判断在帧周期FP1内每一背光区块1221至122N所对应的背光亮度；S210: Determine the backlight brightness corresponding to eachbacklight block 1221 to 122N in the frame period FP1 according to the input display data DI;

S220：依据背光区块1221至122N所对应的背光亮度产生控制信号SIG_C1；S220: Generate a control signal SIG_C1 according to the backlight brightness corresponding to thebacklight blocks 1221 to 122N;

S230：利用驱动电路140并依据控制信号SIG_C1在帧周期FP1内产生驱动信号SIG_D1至SIG_DN至背光模块120；S230: Utilize thedriving circuit 140 to generate driving signals SIG_D1 to SIG_DN to thebacklight module 120 within the frame period FP1 according to the control signal SIG_C1 ;

S240：利用波形产生电路150在帧周期FP1内产生去模糊脉冲信号SIG_MBR至背光模块120；S240: Utilize the waveform generatingcircuit 150 to generate the deblurring pulse signal SIG_MBR to thebacklight module 120 within the frame period FP1;

S250：在去模糊脉冲信号SIG_MBR处于高电位时，背光模块120依据驱动信号SIG_D1至SIG_DN产生液晶显示面板110所需的背光；以及S250: When the deblurring pulse signal SIG_MBR is at a high potential, thebacklight module 120 generates the backlight required by the liquidcrystal display panel 110 according to the driving signals SIG_D1 to SIG_DN ; and

S260：利用背光模块120所产生的背光并通过液晶显示面板110来显示图像。S260: Using the backlight generated by thebacklight module 120 to display an image through the liquidcrystal display panel 110 .

控制电路130可在步骤S210中依据输入显示数据DI判断在每一个帧周期内，每一背光区块1221至122N所对应的背光亮度，并可在步骤S220中依据背光区块1221至122N所对应的背光亮度产生控制信号SIG_C1。在本实施例中，控制电路130可例如包含缩放器(Scaler)。Thecontrol circuit 130 can judge the backlight brightness corresponding to eachbacklight block 1221 to 122N in each frame period according to the input display data DI in step S210, and can judge the backlight brightness corresponding to eachbacklight block 1221 to 122N in step S220 according to thecorresponding backlight block 1221 to 122N The brightness of the backlight generates the control signal SIG_C1 . In this embodiment, thecontrol circuit 130 may include, for example, a scaler.

接着在步骤S230中，驱动电路140可依据控制信号SIG_C1在每一个帧周期内产生多个驱动信号SIG_D1至SIG_DN至背光模块120，从而对应地驱动背光模块120中的背光区块1221至122N，达到区域调光的效果。Then in step S230, thedriving circuit 140 can generate a plurality of driving signals SIG_D1 to SIG_DN to thebacklight module 120 in each frame period according to the control signal SIG_C1 , so as to drive thebacklight blocks 1221 to 1221 in thebacklight module 120 correspondingly. 122N, to achieve the effect of regional dimming.

在本实施例中，为减少动态模糊的问题产生，显示设备100会使背光模块120以闪光(strobe light)的方式提供背光。也就是说，在每个帧周期内，背光模块120都只会在特定的时段发光，而在特定时段以外的时段中则不会发光。如此一来，人眼便不会持续地看到显示设备100所显示的画面，从而减少人眼看到的物体位置与人脑所欲期的物体位置不同而造成动态模糊的问题。In this embodiment, in order to reduce the problem of motion blur, thedisplay device 100 enables thebacklight module 120 to provide backlight in the form of a strobe light. That is to say, in each frame period, thebacklight module 120 only emits light in a specific time period, and does not emit light in a time period other than the specific time period. In this way, the human eyes will not continuously see the picture displayed by thedisplay device 100 , thereby reducing the problem of motion blur caused by the difference between the position of the object seen by the human eye and the position of the object expected by the human brain.

然而，一般来说，控制电路130和驱动电路140是通过串行外设接口(SerialPeripheral Interface，SPI)相连接，而控制信号SIG_C1则是符合串行外设接口(SerialPeripheral Interface，SPI)的通信规范的信号。在此情况下，若控制电路130同样是通过串行外设接口来对驱动电路140传送控制信号以使背光区块1221至122N仅在帧周期内的特定时段内被驱动，则控制电路130就必须在每个帧周期内连续利用串行外设接口下达多组指令。此外，由于区域调光及减少动态模糊的闪光驱动信号在时序上必须互相配合，因此在时序操作上必须非常精准，否则就可能无法呈现出预期的画面，甚至导致画面闪烁的异常状况。However, generally speaking, thecontrol circuit 130 and thedriving circuit 140 are connected through a serial peripheral interface (Serial Peripheral Interface, SPI), and the control signal SIG_C1 conforms to the communication of the serial peripheral interface (Serial Peripheral Interface, SPI). Canonical signal. In this case, if thecontrol circuit 130 also transmits control signals to thedriving circuit 140 through the serial peripheral interface so that the backlight blocks 1221 to 122N are only driven within a specific period of time in the frame period, thecontrol circuit 130 will Multiple sets of instructions must be issued continuously using the serial peripheral interface within each frame cycle. In addition, because the flash drive signals for regional dimming and motion blur reduction must cooperate with each other in timing, the timing operation must be very precise, otherwise the expected image may not be presented, and even abnormal flickering may occur.

为简化时序操作以减少画面异常的问题发生，显示设备100可利用波形产生电路150来产生用以减少动态模糊的闪光脉冲波。举例来说，波形产生电路150可以在步骤S240中，在每一个帧周期内产生一个去模糊脉冲信号SIG_MBR至背光模块120，而背光模块120中的背光区块1221至122N会在步骤S250中，在去模糊脉冲信号SIG_MBR处于高电位时，才依据驱动信号SIG_D1至SIG_DN发光。如此一来，就可以制造出闪光的效果，并可减少动态模糊的不良视觉效果。In order to simplify timing operations and reduce the occurrence of abnormal images, thedisplay device 100 can utilize the waveform generatingcircuit 150 to generate flash pulse waves for reducing motion blur. For example, thewaveform generation circuit 150 can generate a deblurring pulse signal SIG_MBR to thebacklight module 120 in each frame period in step S240, and thebacklight blocks 1221 to 122N in thebacklight module 120 will be in step S250 , when the deblurring pulse signal SIG_MBR is at a high potential, it emits light according to the driving signals SIG_D1 to SIG_DN . In this way, it is possible to create a sparkle effect and reduce the undesirable visual effect of motion blur.

由于去模糊脉冲信号SIG_MBR的主要目的在于使背光区块1221至122N仅在帧周期内的特定时段内被驱动，从而在每个帧周期内插入不发光的时段，因此去模糊脉冲信号SIG_MBR的波形可与输入显示数据DI的内容无关，而可以利用波形产生电路150产生具有固定长度的脉冲波来实现去模糊脉冲信号SIG_MBR。如此一来，控制电路130就无须在每个帧周期内连续下达多组串行外设接口指令给驱动电路140，而可以简化控制电路130和驱动电路140的操作。在一些实施例中，波形产生电路150可例如由系统中的时序控制器(TimingController，TCON)来实现。Since the main purpose of the deblurring pulse signal SIG_MBR is to enable thebacklight blocks 1221 to 122N to be driven only within a certain period of time in the frame period, thereby inserting a period of no light in each frame period, the deblurring pulse signal SIG_MBR The waveform of can be irrelevant to the content of the input display data DI, and thewaveform generation circuit 150 can be used to generate a pulse wave with a fixed length to realize the deblurred pulse signal SIG_MBR . In this way, thecontrol circuit 130 does not need to continuously issue multiple sets of SPI commands to thedriving circuit 140 in each frame period, and the operations of thecontrol circuit 130 and thedriving circuit 140 can be simplified. In some embodiments, the waveform generatingcircuit 150 may be realized by, for example, a timing controller (Timing Controller, TCON) in the system.

图3是在帧周期FP1内，显示设备100所产生的信号时序图。在图3中，去模糊脉冲信号SIG_MBR可以是具有单一脉冲的脉冲波，然而在一些其他实施例中，去模糊脉冲信号SIG_MBR也可包含多个脉冲波。此外，在图3中，驱动电路140可以利用模拟的方式驱动背光模块120，此时驱动信号SIG_D1至SIG_DN可例如是电流信号，也就是说，驱动电路140会依据控制信号SIG_C1的指示，提供具有对应电流大小的驱动信号SIG_D1至SIG_DN至背光区块1221至122N，使得背光区块1221至122N能够发出对应亮度的光。在此情况下，当驱动信号SIG_D1的电流越大时，背光区块1221也将对应地发出亮度越大的光。然而，在一些其他实施例中，驱动电路140也可以利用数字的方式驱动背光模块120，此时驱动信号SIG_D1至SIG_DN可以是具有固定电流大小的脉冲宽度调制信号。也就是说，驱动电路140可依据控制信号SIG_C1的指示产生具有特定频率及对应工作周期(duty cycle)大小的驱动信号SIG_D1至SIG_DN至背光区块1221至122N，使得背光区块1221至122N能够发出对应亮度的光。在此情况下，当驱动信号SIG_D1的工作周期越接近100％时，背光区块1221也将对应地发出亮度越大的光。FIG. 3 is a timing diagram of signals generated by thedisplay device 100 within the frame period FP1. In FIG. 3 , the deblurring pulse signal SIG_MBR may be a pulse wave with a single pulse, however in some other embodiments, the deblurring pulse signal SIG_MBR may also include multiple pulse waves. In addition, in FIG. 3 , the drivingcircuit 140 can drive thebacklight module 120 in an analog manner. At this time, the driving signals SIG_D1 to SIG_DN can be, for example, current signals. That is to say, the drivingcircuit 140 will follow the instructions of the control signal SIG_C1 , providing driving signals SIG_D1 to SIG_DN with corresponding current magnitudes to the backlight blocks 1221 to 122N, so that the backlight blocks 1221 to 122N can emit light with corresponding brightness. In this case, when the current of the driving signal SIG_D1 is greater, thebacklight block 1221 will correspondingly emit light with greater brightness. However, in some other embodiments, the drivingcircuit 140 can also drive thebacklight module 120 in a digital way, and at this time, the driving signals SIG_D1 to SIG_DN can be pulse width modulation signals with a fixed current magnitude. That is to say, the drivingcircuit 140 can generate driving signals SIG_D1 to SIG_DN with specific frequencies and corresponding duty cycle sizes to the backlight blocks 1221 to 122N according to the instruction of the control signal SIG_C1 , so that the backlight blocks 1221 to122N 122N can emit light with corresponding brightness. In this case, when the duty cycle of the driving signal SIG_D1 is closer to 100%, thebacklight block 1221 will correspondingly emit light with higher brightness.

再者，在图3中，驱动电路140可以持续地输出驱动信号SIG_D1至SIG_DN，然而背光模块120可以利用逻辑电路，例如与门(AND gate)，来对驱动信号SIG_D1至SIG_DN以及去模糊脉冲信号SIG_MBR进行逻辑与的运算，使得背光区块1221至122N仅会在去模糊脉冲信号SIG_MBR处于高电位的发光时段EP1内，依据驱动信号SIG_D1至SIG_DN发出对应亮度的光。Moreover, in FIG. 3 , the drivingcircuit 140 can continuously output the driving signals SIG_D1 to SIG_DN , but thebacklight module 120 can use a logic circuit, such as an AND gate (AND gate), to control the driving signals SIG_D1 to SIG_DN and The deblurring pulse signal SIG_MBR performs a logical AND operation, so that the backlight blocks 1221 to 122N only emit lights of corresponding brightness according to the driving signals SIG_D1 to SIG_DN in the light-emitting period EP1 when the deblurring pulse signal SIG_MBR is at a high potential. .

在一些实施例中，方法200还可动态地调整显示设备100在更新图像时的刷新率，例如将图像更新的刷新率调高(例如从60赫兹调整为120赫兹)，以提升呈现图像的质量，或将图像更新的刷新率调降以减少功耗。在此情况下，当刷新率改变时，由于帧周期的长度也会随之改变，因此波形产生电路150也可依据显示设备100的刷新率来调整去模糊脉冲信号SIG_MBR中所包含的脉冲数量、以及每一脉冲处于该高电位的持续时间长度。In some embodiments, themethod 200 can also dynamically adjust the refresh rate of thedisplay device 100 when updating the image, for example, increase the refresh rate of the image update (for example, adjust from 60 Hz to 120 Hz), so as to improve the quality of the presented image , or lower the refresh rate for image updates to reduce power consumption. In this case, when the refresh rate changes, the length of the frame period will also change accordingly, so thewaveform generation circuit 150 can also adjust the number of pulses contained in the deblurring pulse signal SIG_MBR according to the refresh rate of thedisplay device 100 , and the duration of each pulse at the high potential.

此外，当显示设备100的刷新率被动态调整时，若波形产生电路150并未对应调整去模糊脉冲信号SIG_MBR的波形，就可能导致画面呈现的亮度不如预期。在此情况下，波形产生电路150也可在帧周期FP1内，在产生去模糊脉冲信号SIG_MBR之后，产生补偿脉冲信号SIG_CS至背光模块120，而背光区块1221至122N则也可在补偿脉冲信号SIG_CS处于高电位时，依据驱动信号SIG_D1至SIG_DN发光。In addition, when the refresh rate of thedisplay device 100 is dynamically adjusted, if thewaveform generating circuit 150 does not adjust the waveform of the de-blurring pulse signal SIG_MBR correspondingly, the brightness of the image may not be as expected. In this case, thewaveform generation circuit 150 can also generate the compensation pulse signal SIG_CS to thebacklight module 120 after generating the deblurring pulse signal SIG_MBR within the frame period FP1, and the backlight blocks 1221 to 122N can also be compensated When the pulse signal SIG_CS is at a high potential, it emits light according to the driving signals SIG_D1 to SIG_DN .

图4是在帧周期FP1内，显示设备100所产生的另一信号时序图。举例来说，当刷新率降低时，帧周期FP1的长度会提升，此时若去模糊脉冲信号SIG_MBR处在高电位的时段并未对应拉长，就会使得背光区块1221至122N实际发光的时间比例变低，导致显示设备100的整体呈现的亮度偏低，此时波形产生电路150可以在产生去模糊脉冲信号SIG_MBR之后，接续地产生补偿脉冲信号SIG_CS，以增加背光区块1221至122N在帧周期FP1内的发光时间，达到亮度补偿的效果。在图4中，补偿脉冲信号SIG_CS可包含至少一脉冲。FIG. 4 is a timing diagram of another signal generated by thedisplay device 100 within the frame period FP1. For example, when the refresh rate decreases, the length of the frame period FP1 will increase. At this time, if the period of the high potential of the deblurring pulse signal SIG_MBR is not correspondingly lengthened, the backlight blocks 1221 to 122N will actually emit light. The proportion of the time becomes low, resulting in low overall brightness of thedisplay device 100. At this time, thewaveform generating circuit 150 can generate the compensating pulse signal SIG_CS successively after generating the deblurring pulse signal SIG_MBR , so as to increase thebacklight block 1221 To 122N in the frame period FP1 light-emitting time, to achieve the effect of brightness compensation. In FIG. 4 , the compensation pulse signal SIG_CS may include at least one pulse.

由于显示设备100可以利用波形产生电路150来产生补偿脉冲信号SIG_CS，因此控制电路130无须另外通过串行外设接口来对驱动电路140传送其他的控制信号，从而能够简化控制电路130及驱动电路140的操作，并可减少因为控制信号延迟所导致之画面亮度不如预期和/或画面闪烁的异常状况。Since thedisplay device 100 can use thewaveform generating circuit 150 to generate the compensation pulse signal SIG_CS , thecontrol circuit 130 does not need to transmit other control signals to thedriving circuit 140 through the serial peripheral interface, thereby simplifying thecontrol circuit 130 and the driving circuit. 140, and can reduce the abnormal situation that the brightness of the picture is not as expected and/or the picture is flickering due to the delay of the control signal.

此外，在一些实施例中，波形产生电路150所产生的去模糊脉冲信号SIG_MBR可具有的固定长度，而当刷新率产生变化时，波形产生电路150仅需要应调整补偿脉冲信号SIG_CS所包含的脉冲数量多少，就可以确保背光模块120能够在每个帧周期内提供所需亮度的背光。如此一来，就无须另外调整去模糊脉冲信号SIG_MBR的波形，而能够简化波形产生电路150的操作。In addition, in some embodiments, the deblurring pulse signal SIG_MBR generated by thewaveform generating circuit 150 may have a fixed length, and when the refresh rate changes, thewaveform generating circuit 150 only needs to adjust the compensation pulse signal SIG_CS contained in The number of pulses can ensure that thebacklight module 120 can provide a backlight with required brightness in each frame period. In this way, there is no need to adjust the waveform of the deblurred pulse signal SIG_MBR , and the operation of thewaveform generating circuit 150 can be simplified.

综上所述，本公开所提供的显示设备及显示方法可以利用波形产生电路来产生去模糊脉冲信号及补偿脉冲信号，因此可以简化控制电路及驱动电路的操作，从而减少因为控制信号延迟所导致的画面亮度不如预期和/或画面闪烁的异常状况。To sum up, the display device and the display method provided by the present disclosure can use the waveform generation circuit to generate the deblurred pulse signal and the compensation pulse signal, so the operation of the control circuit and the driving circuit can be simplified, thereby reducing the delay caused by the delay of the control signal. The brightness of the screen is not as expected and/or the screen is flickering abnormally.

【符号说明】【Symbol Description】

100： 显示设备100: display device

110： 液晶显示面板110: Liquid crystal display panel

120： 背光模块120: Backlight module

1221至122N： 背光区块1221 to 122N: backlight blocks

130： 控制电路130: control circuit

140： 驱动电路140: drive circuit

150： 波形产生电路150: Waveform generation circuit

200： 方法200: method

DI： 显示数据DI: display data

EP1： 发光时段EP1: Luminous Period

FP1： 帧周期FP1: frame period

S210至S260： 步骤S210 to S260: Steps

SIG_C1： 控制信号SIG_C1 : Control signal

SIG_D1至SIG_DN： 驱动信号SIG_D1 to SIG_DN : Drive signal

SIG_MBR： 去模糊脉冲信号SIG_MBR : Deblurred Burst Signal

Claims (10)

1. A display device, comprising:

a liquid crystal display panel including a plurality of liquid crystal pixels;

the backlight module is used for generating backlight required by the liquid crystal display panel and comprises a plurality of backlight blocks;

the control circuit is used for judging the backlight brightness corresponding to each backlight block in the plurality of backlight blocks in a frame period according to input display data and generating a control signal according to the plurality of backlight brightness corresponding to the plurality of backlight blocks;

the driving circuit is used for generating a plurality of driving signals to the backlight module in the frame period according to the control signals; and

the waveform generating circuit is used for generating a deblurring pulse signal to the backlight module in the frame period;

the backlight blocks in the backlight module emit light according to the driving signals when the deblurring pulse signals are at a high potential.

2. The display apparatus of claim 1, wherein at least two backlight blocks of the plurality of backlight blocks correspond to distinct backlight luminances.

3. The display device according to claim 1, wherein the waveform generating circuit is further configured to generate a compensation pulse signal to the backlight module after generating the deblurring pulse signal in the frame period when the refresh rate of the display device is dynamically adjusted, wherein the plurality of backlight blocks are further configured to emit light according to the plurality of driving signals when the compensation pulse signal is at the high potential.

4. The display apparatus of claim 3, wherein the compensation pulse signal comprises at least one pulse.

5. The display device according to claim 1, wherein the plurality of driving signals are current signals, and the plurality of backlight blocks emit light with corresponding brightness according to current intensities of the plurality of driving signals when the deblurring pulse signal is at the high potential.

6. The display device according to claim 1, wherein the plurality of driving signals are pulse width modulation signals, and the plurality of backlight blocks emit light with corresponding brightness according to duty cycle magnitudes of the plurality of driving signals when the deblurring pulse signal is at the high potential.

7. The display device according to claim 1, wherein the waveform generation circuit is a timing controller.

8. The display apparatus of claim 1, wherein the control circuit includes a sealer.

9. The display device according to claim 1, wherein the waveform generation circuit is further configured to adjust a number of pulses included in the deblurring pulse signal and a duration length of each pulse at the high potential according to a refresh rate of the display device.

10. A display method, comprising:

judging the backlight brightness corresponding to each backlight block in a plurality of backlight blocks of the backlight module in a frame period according to the input display data;

generating a control signal according to a plurality of backlight brightness corresponding to the plurality of backlight blocks;

generating a plurality of driving signals to the backlight module in the frame period by using a driving circuit according to the control signal;

generating a deblurring pulse signal to the backlight module in the frame period by using a waveform generating circuit;

when the deblurring pulse signal is at a high potential, the backlight module is utilized to generate backlight needed by the liquid crystal display panel according to the plurality of driving signals; and

and displaying an image by using the backlight generated by the backlight module and through the liquid crystal display panel.

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