CN104376820A - Display device and adjusting method thereof - Google Patents

Display device and adjusting method thereof Download PDF

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CN104376820A
CN104376820A CN201310355116.2A CN201310355116A CN104376820A CN 104376820 A CN104376820 A CN 104376820A CN 201310355116 A CN201310355116 A CN 201310355116A CN 104376820 A CN104376820 A CN 104376820A
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frame frequency
electric voltage
common electric
display device
frequency scope
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黄竑旻
黄鈺婷
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AUO Corp
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AU Optronics Corp
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Abstract

The invention discloses a display device and an adjusting method thereof, the display device comprises a display panel and a public voltage generating circuit, the public voltage generating circuit comprises: the storage module is provided with a plurality of storage spaces and is used for respectively storing a plurality of common voltages, wherein each common voltage corresponds to each different storage space, and each common voltage corresponds to different picture frequency ranges; the sensing module is electrically connected with the display panel and the storage module, captures the image frequency from the display panel, judges the image frequency, and outputs a first common voltage corresponding to a first image frequency range in the plurality of common voltages when the image frequency is in the first image frequency range; and outputting a second common voltage corresponding to the second picture frequency range in the plurality of common voltages when the picture frequency is in the second picture frequency range. The display device of the invention can adapt to the display modes of various picture frequencies so as to improve the picture flicker phenomenon.

Description

显示装置及其调整方法Display device and adjustment method thereof

技术领域technical field

本发明关于一种显示装置及其调整方法,尤其涉及一种降低画面闪烁现象的显示装置及其调整方法。The present invention relates to a display device and an adjustment method thereof, in particular to a display device and an adjustment method thereof for reducing screen flickering.

背景技术Background technique

液晶显示装置(Liquid Crystal Display;LCD)是目前广泛使用的一种平面显示器,其具有外型轻薄、省电以及低辐射等优点。液晶显示装置的工作原理为利用改变液晶层两端的电压差来改变液晶层内的液晶分子的排列状态,用以改变液晶层的透光性,再配合背光模组所提供的光源以显示影像。A liquid crystal display (Liquid Crystal Display; LCD) is a flat panel display widely used at present, which has the advantages of light and thin appearance, power saving and low radiation. The working principle of the liquid crystal display device is to change the alignment state of the liquid crystal molecules in the liquid crystal layer by changing the voltage difference between the two ends of the liquid crystal layer, so as to change the light transmittance of the liquid crystal layer, and then cooperate with the light source provided by the backlight module to display images.

请参见图1A和图1B,图1A和图1B所示分别为现有技术中显示装置的灰阶电压正常时以及异常时的波形的示意图。当输入一栅极信号,使液晶显示面板的像素的开关TFT为ON时,液晶上会储存所需灰阶电压,灰阶电压由源极驱动器提供的电压对应公共电压(Common Voltage,Vcom)决定,亦即液晶显示面板需要一个调节后的Vcom信号,为液晶显示面板提供一个参考点。如图1A所示第一时段的灰阶电压为V+,第二时段的灰阶电压为V-,V+等于V-。通过调整最佳Vcom,以达到画面不会抖动或抖动最小,但如果Vcom未调整好,则会造成V+、V-不相等,如图1B所示,第一时段的灰阶电压为V+’,第二时段的灰阶电压为V-’,且V+’不等于V-’,此时画面抖动大,严重影响画面品质。Please refer to FIG. 1A and FIG. 1B . FIG. 1A and FIG. 1B are schematic diagrams of the waveforms of the gray scale voltage of the display device in the prior art when it is normal and when it is abnormal. When a gate signal is input to turn on the switching TFT of the pixel of the liquid crystal display panel, the required gray-scale voltage will be stored on the liquid crystal, and the gray-scale voltage is determined by the voltage provided by the source driver corresponding to the common voltage (Common Voltage, Vcom). , that is, the liquid crystal display panel needs an adjusted Vcom signal to provide a reference point for the liquid crystal display panel. As shown in FIG. 1A , the grayscale voltage in the first period is V+, the grayscale voltage in the second period is V−, and V+ is equal to V−. By adjusting the optimal Vcom, the image will not jitter or the jitter will be minimized. However, if Vcom is not adjusted properly, V+ and V- will be unequal. As shown in Figure 1B, the gray-scale voltage in the first period is V+', The gray scale voltage in the second period is V-', and V+' is not equal to V-'. At this time, the picture shakes greatly, seriously affecting the picture quality.

且一般来说,在正常画面频率60Hz下,会针对闪烁图案而调整出最佳Vcom值,使画面不过抖动或抖动最小。先前是利用可变电阻调整Vcom电压,由于是人工手动调整,精准调整和资料收集相对较不易。因此目前皆改为由I2C(内部集成电路,Inter-Integrated Circuit)数字Vcom的方式调整。由于目前客户需求SDRRS(无缝显示刷新频率切换,seamless Display Refresh Rate Switching)的画面频率为40Hz和播放影片时的画面频率则降至48Hz,基于目前AHVA(广视角,AdvancedHyper-Viewing Angle)特性,于画面频率60Hz基础下所调整的Vcom值无法直接切换至画面频率48Hz/40Hz下使用,此时所对应的最佳Vcom值非画面频率48/40Hz下所调整的,因此闪烁程度很严重,造成人眼的不适。此外,频率降低时,将因正负电压及公共电压的差产生不同而造成画面的闪烁程度不同,亦会造成人眼的不适。And generally speaking, under the normal picture frequency of 60Hz, the optimal Vcom value will be adjusted for the flickering pattern, so that the picture does not jitter or jitters to a minimum. Previously, a variable resistor was used to adjust the Vcom voltage. Since it was manually adjusted, precise adjustment and data collection were relatively difficult. Therefore, it is currently adjusted by I2C (Inter-Integrated Circuit) digital Vcom. Due to the current customer demand for SDRRS (seamless display refresh rate switching, seamless display refresh rate switching), the screen frequency is 40Hz and the screen frequency is reduced to 48Hz when playing movies. Based on the current AHVA (wide viewing angle, Advanced Hyper-Viewing Angle) characteristics, The Vcom value adjusted based on the screen frequency of 60Hz cannot be directly switched to use at the screen frequency of 48Hz/40Hz. At this time, the corresponding optimal Vcom value is not adjusted at the screen frequency of 48/40Hz, so the degree of flickering is very serious, causing Discomfort in the human eye. In addition, when the frequency is reduced, the flickering degree of the screen will be different due to the difference between the positive and negative voltages and the common voltage, which will also cause discomfort to human eyes.

因此,如何设计一个在不同显示模式切换时,能不影响亮度及闪烁程度的显示装置,从而提高显示装置的影像品质,乃为此一业界亟待解决的问题。Therefore, how to design a display device that does not affect the brightness and flicker when switching between different display modes, so as to improve the image quality of the display device, is an urgent problem to be solved in the industry.

发明内容Contents of the invention

因此,本发明的目的之一在于提供一种显示装置及其调整方法,其可适应多种画面频率的显示模式,以改善画面闪烁现象。Therefore, one of the objectives of the present invention is to provide a display device and an adjustment method thereof, which can adapt to display modes of various frame frequencies, so as to improve the image flicker phenomenon.

为达上述目的,本发明提供一种显示装置,该显示装置包括:显示面板,用以显示画面;以及公共电压产生电路。公共电压产生电路包括:存储模组,具有多个存储空间,用以分别存储多个公共电压,其中每一公共电压对应每一相异的存储空间,且每一公共电压对应相异的画面频率范围;以及感测模组,电性连接该显示面板以及该存储模组,该感测模组从该显示面板撷取该画面的画面频率并判断该画面频率,当该画面频率位于第一画面频率范围时,该感测模组输出该多个公共电压中对应该第一画面频率范围的第一公共电压至该显示面板;当该画面频率位于第二画面频率范围时,该感测模组输出该多个公共电压中对应该第二画面频率范围的第二公共电压至该显示面板。To achieve the above object, the present invention provides a display device, which includes: a display panel for displaying images; and a common voltage generating circuit. The common voltage generation circuit includes: a storage module with multiple storage spaces for storing multiple common voltages respectively, wherein each common voltage corresponds to each different storage space, and each common voltage corresponds to a different frame frequency range; and a sensing module electrically connected to the display panel and the storage module, the sensing module captures the frame frequency of the frame from the display panel and judges the frame frequency, when the frame frequency is in the first frame In the frequency range, the sensing module outputs the first common voltage corresponding to the first picture frequency range among the plurality of common voltages to the display panel; when the picture frequency is in the second picture frequency range, the sensing module Outputting a second common voltage corresponding to the second frame frequency range among the plurality of common voltages to the display panel.

作为可选的技术方案,该感测模组包括:感测单元,该感测单元用以撷取并判断该画面频率,且当该画面频率位于第一画面频率范围时,确定该第一画面频率范围对应的该第一公共电压以及该第一公共电压于该存储模组中的存储空间的第一位置信息;当该画面频率位于第二画面频率范围时,确定该第二画面频率范围对应的该第二公共电压以及该第二公共电压于该存储模组中的存储空间的第二位置信息;以及公共电压输出单元,该电性连接该存储模组与该显示面板,当该画面频率位于第一画面频率范围时,该公共电压输出单元接收该第一位置信息,并输出该第一位置信息对应的该第一公共电压至该显示面板;当该画面频率位于第二画面频率范围时,该公共电压输出单元接收该第二位置信息,并输出该第二位置信息对应的该第二公共电压至该显示面板。As an optional technical solution, the sensing module includes: a sensing unit used to capture and determine the frame frequency, and determine the first frame frequency when the frame frequency is within the first frame frequency range The first common voltage corresponding to the frequency range and the first location information of the first common voltage in the storage space in the storage module; when the picture frequency is in the second picture frequency range, it is determined that the second picture frequency range corresponds to The second common voltage and the second location information of the second common voltage in the storage space in the storage module; and the common voltage output unit, which is electrically connected to the storage module and the display panel, when the frame frequency When in the first picture frequency range, the common voltage output unit receives the first position information, and outputs the first common voltage corresponding to the first position information to the display panel; when the picture frequency is in the second picture frequency range , the common voltage output unit receives the second position information, and outputs the second common voltage corresponding to the second position information to the display panel.

作为可选的技术方案,该感测单元为Y型二极管。As an optional technical solution, the sensing unit is a Y-type diode.

作为可选的技术方案,该存储模组为电可擦可编程只读存储器。As an optional technical solution, the storage module is an electrically erasable programmable read-only memory.

作为可选的技术方案,该多个公共电压通过时序信号以及数据信号写入该存储模组的各个存储空间。As an optional technical solution, the multiple common voltages are written into each storage space of the storage module through timing signals and data signals.

作为可选的技术方案,该显示装置为液晶显示装置。As an optional technical solution, the display device is a liquid crystal display device.

本发明还提供一种显示装置的调整方法,该调整方法包括:存储多个公共电压于多个存储空间,且每一公共电压对应每一相异的存储空间,每一公共电压对应相异的画面频率范围;撷取并判断显示装置的画面频率;以及当该画面频率位于第一画面频率范围时,输出该多个公共电压中对应该第一画面频率范围的第一公共电压;当该画面频率位于第二画面频率范围时,输出该多个公共电压中对应该第二画面频率范围的第二公共电压。The present invention also provides an adjustment method for a display device. The adjustment method includes: storing a plurality of common voltages in a plurality of storage spaces, and each common voltage corresponds to a different storage space, and each common voltage corresponds to a different storage space. frame frequency range; capture and determine the frame frequency of the display device; and when the frame frequency is in the first frame frequency range, output the first common voltage corresponding to the first frame frequency range among the plurality of common voltages; when the frame frequency When the frequency is in the second picture frequency range, output the second common voltage corresponding to the second picture frequency range among the plurality of common voltages.

作为可选的技术方案,该撷取并判断显示装置的画面频率;以及该当该画面频率位于第一画面频率范围时,输出该多个公共电压中对应该第一画面频率范围的第一公共电压;当该画面频率位于第二画面频率范围时,输出该多个公共电压中对应该第二画面频率范围的第二公共电压的步骤包括:撷取并判断该画面频率,且当该画面频率位于第一画面频率范围时,确定该第一画面频率范围对应的该第一公共电压以及该第一公共电压于该存储模组中的存储空间的第一位置信息;当该画面频率位于第二画面频率范围时,确定该第二画面频率范围对应的该第二公共电压以及该第二公共电压于该存储模组中的存储空间的第二位置信息;以及当该画面频率位于第一画面频率范围时,根据该第一位置信息输出该第一公共电压至该显示面板;当该画面频率位于第二画面频率范围时,根据该第二位置信息输出该第二公共电压至该显示面板。As an optional technical solution, extracting and judging the frame frequency of the display device; and when the frame frequency is in the first frame frequency range, outputting the first common voltage corresponding to the first frame frequency range among the plurality of common voltages ; when the picture frequency is in the second picture frequency range, the step of outputting the second common voltage corresponding to the second picture frequency range in the plurality of common voltages includes: extracting and judging the picture frequency, and when the picture frequency is in the In the first picture frequency range, determine the first common voltage corresponding to the first picture frequency range and the first location information of the first common voltage in the storage space in the storage module; when the picture frequency is in the second picture frequency range In the frequency range, determine the second common voltage corresponding to the second picture frequency range and the second position information of the second common voltage in the storage space in the storage module; and when the picture frequency is in the first picture frequency range outputting the first common voltage to the display panel according to the first position information; outputting the second common voltage to the display panel according to the second position information when the picture frequency is in the second picture frequency range.

作为可选的技术方案,该多个公共电压通过时序信号以及数据信号写入各个存储空间。As an optional technical solution, the multiple common voltages are written into each storage space through timing signals and data signals.

作为可选的技术方案,该显示装置为液晶显示装置。As an optional technical solution, the display device is a liquid crystal display device.

与现有技术相比,本发明的显示装置中的存储模组存储有对应多个不同画面频率的Vcom,可通过检测显示装置的画面频率来输出与该画面频率对应的Vcom,使得显示装置无论在哪种画面频率下均可调整至最佳的Vcom,从而降低或避免画面闪烁现象发生,提高显示装置的显示品质。Compared with the prior art, the storage module in the display device of the present invention stores Vcom corresponding to a plurality of different screen frequencies, and can output the Vcom corresponding to the screen frequency by detecting the screen frequency of the display device, so that the display device no matter The best Vcom can be adjusted under any picture frequency, so as to reduce or avoid picture flickering and improve the display quality of the display device.

关于本发明的优点与精神可以藉由以下的发明详述及所附图式得到进一步的了解。The advantages and spirit of the present invention can be further understood through the following detailed description of the invention and the accompanying drawings.

附图说明Description of drawings

图1A和图1B所示分别为现有技术中显示装置的灰阶电压正常时以及异常时的波形的示意图;FIG. 1A and FIG. 1B are respectively schematic diagrams of waveforms when the gray scale voltage of the display device in the prior art is normal and when it is abnormal;

图2所示为根据本发明的显示装置的方框图;Figure 2 shows a block diagram of a display device according to the present invention;

图3所示为根据本发明过的存储模组的示意图;Fig. 3 is a schematic diagram of a storage module according to the present invention;

图4所示为根据本发明的显示装置的另一实施方式的方框图;FIG. 4 is a block diagram showing another embodiment of a display device according to the present invention;

图5所示为根据本发明的显示装置的调整方法的流程图。FIG. 5 is a flowchart of a method for adjusting a display device according to the present invention.

具体实施方式Detailed ways

为了使本申请所揭示的技术内容更加详尽与完备,可参照附图以及本发明的下述各种具体实施例,附图中相同的标记代表相同或相似的组件。然而,本领域的普通技术人员应当理解,下文中所提供的实施例并非用来限制本发明所涵盖的范围。此外,附图仅仅用于示意性地加以说明,并未依照其原尺寸进行绘制。In order to make the technical content disclosed in this application more detailed and complete, reference may be made to the drawings and the following various specific embodiments of the present invention, and the same symbols in the drawings represent the same or similar components. However, those skilled in the art should understand that the examples provided below are not intended to limit the scope of the present invention. In addition, the drawings are only for schematic illustration and are not drawn according to their original scale.

关于本文中所使用之“约”、“大约”或“大致”一般通常指数值的误差或范围于百分之二十以内,较好地是在百分之十以内,而更佳地则是在百分之五以内。文中若无明确说明,其所提及的数值皆视作为近似值,即如“约”、“大约”或“大致”所表示的误差或范围。As used herein, "about", "approximately" or "approximately" generally means that the error or range of the value is within 20%, preferably within 10%, and more preferably within five percent. If there is no explicit statement in the text, the numerical values mentioned are regarded as approximate values, that is, the error or range indicated by "about", "approximately" or "approximately".

另外,关于本文中所使用之“耦接”或“连接”,均可指两个或多个组件相互直接作实体或电性接触,或是相互间接作实体或电性接触,而“耦接”还可指两个或多个组件相互操作或动作。In addition, as used herein, "coupled" or "connected" can refer to two or more components that are in direct physical or electrical contact with each other, or indirect physical or electrical contact with each other, and "coupled" ” can also mean that two or more components interoperate or act.

请参见图2,图2所示为根据本发明的显示装置的方框图。本发明提供一种显示装置1,显示装置1例如为液晶显示装置,包括显示面板2以及公共电压产生电路3,显示面板2用以显示画面;公共电压产生电路3电性连接显示面板2。公共电压产生电路3包括存储模组4以及感测模组5,存储模组4具有多个存储空间,用以分别存储多个公共电压,其中每一公共电压对应每一相异的存储空间,每一公共电压对应相异的画面频率范围;感测模组5电性连接显示面板2以及存储模组4,感测模组5从显示面板2撷取显示画面的画面频率并判断此画面频率,当此画面频率位于第一画面频率范围时,感测模组5输出此多个公共电压中对应第一画面频率范围的第一公共电压至显示面板2;当此画面频率位于第二画面频率范围时,感测模组5输出此多个公共电压中对应此第二画面频率范围的第二公共电压至显示面板2,从而达到呈现画面最佳显示。其中存储模组可以是可程序化(programmable)内存,例如为电可擦可编程只读存储器(electrically erasableprogrammable read only memory,EEPROM)或其它类型的内存,然而本发明不以上述为限。Please refer to FIG. 2 , which is a block diagram of a display device according to the present invention. The present invention provides a display device 1 , such as a liquid crystal display device, including a display panel 2 and a common voltage generating circuit 3 , the display panel 2 is used to display images; the common voltage generating circuit 3 is electrically connected to the display panel 2 . The common voltage generation circuit 3 includes a storage module 4 and a sensing module 5. The storage module 4 has a plurality of storage spaces for storing a plurality of common voltages respectively, wherein each common voltage corresponds to each different storage space, Each common voltage corresponds to a different frame frequency range; the sensing module 5 is electrically connected to the display panel 2 and the storage module 4, and the sensing module 5 captures the frame frequency of the display frame from the display panel 2 and judges the frame frequency , when the picture frequency is in the first picture frequency range, the sensing module 5 outputs the first common voltage corresponding to the first picture frequency range among the plurality of common voltages to the display panel 2; when the picture frequency is in the second picture frequency When in range, the sensing module 5 outputs the second common voltage corresponding to the second picture frequency range among the multiple common voltages to the display panel 2, so as to achieve the best display of the picture. The storage module may be a programmable (programmable) memory, such as an electrically erasable programmable read only memory (EEPROM) or other types of memory, but the present invention is not limited thereto.

请参见图3,图3所示为根据本发明过的存储模组的示意图。举例来说,显示装置1具有40HZ、48HZ以及60HZ三种显示模式,则当当前显示画面的画面频率位于35Hz-45Hz范围时,感测模组5将撷取存储模组4中对应35Hz-45Hz(例如第一画面频率)的第一公共电压,并输出第一公共电压至显示面板2,其中第一公共电压位于存储模组4中的存储空间41;当当前显示画面的画面频率位于45Hz-55Hz范围时,感测模组5将撷取存储模组4中对应45Hz-45Hz(例如第二画面频率)的第二公共电压,并输出第二公共电压至显示面板2,其中第二公共电压位于存储模组4中的存储空间42;当当前显示画面的画面频率位于55Hz-65Hz范围时,感测模组5将撷取存储模组4中对应55Hz-65Hz(例如第三画面频率)的第三公共电压,并输出第三公共电压至显示面板2,其中第三公共电压位于存储模组4中的存储空间43。如此不同画面频率下即具有对应的公共电压,从而使得画面闪烁现象减少或消除。Please refer to FIG. 3 , which is a schematic diagram of a storage module according to the present invention. For example, the display device 1 has three display modes of 40HZ, 48HZ and 60HZ, then when the screen frequency of the current display screen is in the range of 35Hz-45Hz, the sensing module 5 will capture the corresponding 35Hz-45Hz in the storage module 4. (for example, the first picture frequency) of the first common voltage, and output the first common voltage to the display panel 2, wherein the first common voltage is located in the storage space 41 of the storage module 4; when the picture frequency of the current display picture is at 45Hz- In the range of 55Hz, the sensing module 5 will capture the second common voltage corresponding to 45Hz-45Hz (such as the second screen frequency) in the storage module 4, and output the second common voltage to the display panel 2, wherein the second common voltage Located in the storage space 42 in the storage module 4; when the frame frequency of the current display screen is in the range of 55Hz-65Hz, the sensing module 5 will capture the corresponding 55Hz-65Hz (for example, the third frame frequency) in the storage module 4 the third common voltage, and output the third common voltage to the display panel 2 , where the third common voltage is located in the storage space 43 in the storage module 4 . Such different picture frequencies have corresponding common voltages, thereby reducing or eliminating picture flickering.

于其它实施方式中,存储模组4还可以选择存储第四公共电压、第五公共电压......,并取决于显示装置1具有的显示模式的数量而定,本发明并不限于本实施方式所例举的数量。In other embodiments, the storage module 4 can also choose to store the fourth common voltage, the fifth common voltage..., and it depends on the number of display modes that the display device 1 has. The present invention is not limited to The number cited in this embodiment.

其中,上述多个公共电压可利用I2C串行数据信号(SDA)及串行时序信号(SCL)写入存储模组4的各个存储空间,例如将画面频率40Hz下所调整的(或对应的第一公共电压(Vcom1)储存在存储空间41;将画面频率48Hz下所调整的(或对应的第二公共电压(Vcom2)储存在存储空间42;将画面频率60Hz下所调整的(或对应的第三公共电压(Vcom3)储存在存储空间43。Among them, the above-mentioned multiple common voltages can be written into each storage space of the storage module 4 by using the I2C serial data signal (SDA) and the serial timing signal (SCL), such as adjusting the screen frequency at 40Hz (or the corresponding first A common voltage (Vcom1) is stored in the storage space 41; the adjusted (or corresponding second common voltage (Vcom2)) at the picture frequency of 48Hz is stored in the storage space 42; the adjusted picture frequency of 60Hz (or the corresponding second common voltage (Vcom2) Three common voltages ( Vcom3 ) are stored in the memory space 43 .

显示面板2具有栅极驱动器,公共电压输出单元7电性连接于栅极驱动器8,上述调整后的公共电压即第一公共电压输出至栅极驱动器8,栅极驱动器8连接至复数个像素电极。The display panel 2 has a gate driver, the common voltage output unit 7 is electrically connected to the gate driver 8, the above-mentioned adjusted common voltage, namely the first common voltage, is output to the gate driver 8, and the gate driver 8 is connected to a plurality of pixel electrodes .

请参见图4,图4所示为根据本发明的显示装置的另一实施方式的方框图。本实施方式中,感测模组5包括感测单元6以及公共电压输出单元7。感测单元6用以撷取并判断该画面频率,且当该画面频率位于第一画面频率范围时,确定该第一画面频率范围对应的该第一公共电压以及该第一公共电压于该存储模组4中的存储空间的第一位置信息;当画面频率位于第二画面频率范围时,确定第二画面频率范围对应的该第二公共电压以及该第二公共电压于该存储模组4中的存储空间的第二位置信息。公共电压输出单元7电性连接存储模组4与显示面板2,当该画面频率位于第一画面频率范围时,公共电压输出单元7接收该第一位置信息,并输出该第一位置信息对应的该第一公共电压至显示面板2;当该画面频率位于第二画面频率范围时,公共电压输出单元7接收该第二位置信息,并输出该第二位置信息对应的该第二公共电压至显示面板2。具体的,感测单元6例如为Y型二极管(YDIO)。Please refer to FIG. 4 , which is a block diagram of another embodiment of a display device according to the present invention. In this embodiment, the sensing module 5 includes a sensing unit 6 and a common voltage output unit 7 . The sensing unit 6 is used to capture and determine the frame frequency, and when the frame frequency is in the first frame frequency range, determine the first common voltage corresponding to the first frame frequency range and the first common voltage in the storage The first location information of the storage space in the module 4; when the picture frequency is in the second picture frequency range, determine the second common voltage corresponding to the second picture frequency range and the second common voltage in the storage module 4 The second location information of the storage space. The common voltage output unit 7 is electrically connected to the storage module 4 and the display panel 2. When the picture frequency is in the first picture frequency range, the common voltage output unit 7 receives the first position information and outputs the corresponding position information of the first position information. The first common voltage is supplied to the display panel 2; when the picture frequency is in the second picture frequency range, the common voltage output unit 7 receives the second position information, and outputs the second common voltage corresponding to the second position information to the display Panel 2. Specifically, the sensing unit 6 is, for example, a Y-type diode (YDIO).

请参见图5,图5所示为根据本发明的显示装置的调整方法的流程图。本发明还提供一种显示装置的调整方法,上述显示装置例如为液晶显示装置,该调整方法包括以下步骤:Please refer to FIG. 5 , which is a flow chart of a method for adjusting a display device according to the present invention. The present invention also provides a method for adjusting a display device. The above-mentioned display device is, for example, a liquid crystal display device. The adjustment method includes the following steps:

首先如步骤S1:存储多个公共电压于多个存储空间,且每一公共电压对应每一存储空间,每一公共电压对应一画面频率范围;First, as step S1: storing multiple common voltages in multiple storage spaces, and each common voltage corresponds to each storage space, and each common voltage corresponds to a frame frequency range;

接着如步骤S2:撷取并判断显示装置的画面频率;以及Then as step S2: capture and determine the frame frequency of the display device; and

最后如步骤S3:当该画面频率位于第一画面频率范围时,输出该多个公共电压中对应该第一画面频率范围的第一公共电压;当该画面频率位于第二画面频率范围时,输出该多个公共电压中对应该第二画面频率范围的第二公共电压。Finally as step S3: when the picture frequency is in the first picture frequency range, output the first common voltage corresponding to the first picture frequency range among the plurality of common voltages; when the picture frequency is in the second picture frequency range, output The second common voltage corresponding to the second frame frequency range among the plurality of common voltages.

当然,上述“撷取并判断显示装置的画面频率;以及该当该画面频率位于第一画面频率范围时,输出该多个公共电压中对应该第一画面频率范围的第一公共电压;当该画面频率位于第二画面频率范围时,输出该多个公共电压中对应该第二画面频率范围的第二公共电压”的步骤例如包括以下步骤:Of course, the above-mentioned "capturing and judging the frame frequency of the display device; and when the frame frequency is in the first frame frequency range, output the first common voltage corresponding to the first frame frequency range among the plurality of common voltages; When the frequency is in the second picture frequency range, the step of outputting the "second common voltage corresponding to the second picture frequency range" among the plurality of common voltages includes the following steps, for example:

撷取并判断该画面频率,且当该画面频率位于第一画面频率范围时,确定该第一画面频率范围对应的该第一公共电压以及该第一公共电压于该存储模组中的存储空间的第一位置信息;当该画面频率位于第二画面频率范围时,确定该第二画面频率范围对应的该第二公共电压以及该第二公共电压于该存储模组中的存储空间的第二位置信息;以及Capture and determine the frame frequency, and when the frame frequency is in the first frame frequency range, determine the first common voltage corresponding to the first frame frequency range and the storage space of the first common voltage in the storage module the first position information; when the picture frequency is in the second picture frequency range, determine the second common voltage corresponding to the second picture frequency range and the second common voltage in the storage space of the storage module location information; and

当该画面频率位于第一画面频率范围时,根据该第一位置信息输出该第一公共电压至该显示面板;当该画面频率位于第二画面频率范围时,根据该第二位置信息输出该第二公共电压至该显示面板。When the picture frequency is in the first picture frequency range, output the first common voltage to the display panel according to the first position information; when the picture frequency is in the second picture frequency range, output the first common voltage according to the second position information Two common voltages are connected to the display panel.

其中上述存储空间位于存储模组上,存储模组例如可以是可程序化(programmable)内存,例如为电可擦可编程只读存储器(electrically erasableprogrammable read only memory,EEPROM)或其它类型的内存,然而本发明不以上述为限。举例来说,显示装置具有40HZ、48HZ以及60HZ三种显示模式,则当当前显示画面的画面频率位于35Hz-45Hz范围时,感测模组将撷取存储模组中对应35Hz-45Hz(例如第一画面频率)的第一公共电压,并输出第一公共电压至显示面板,其中第一公共电压位于存储模组中的存储空间;当当前显示画面的画面频率位于45Hz-55Hz范围时,感测模组将撷取存储模组中对应45Hz-45Hz(例如第二画面频率)的第二公共电压,并输出第二公共电压至显示面板,其中第二公共电压位于存储模组中的存储空间;当当前显示画面的画面频率位于55Hz-65Hz范围时,感测模组将撷取存储模组中对应55Hz-65Hz(例如第三画面频率)的第三公共电压,并输出第三公共电压至显示面板,其中第三公共电压位于存储模组4中的存储空间。于其它实施方式中,存储模组还可以选择存储第四公共电压、第五公共电压......,并取决于显示装置1具有的显示模式的数量而定,本发明并不限于本实施方式所例举的数量。Wherein the above-mentioned storage space is located on the storage module, the storage module can be, for example, a programmable (programmable) memory, such as an electrically erasable programmable read-only memory (electrically erasable programmable read only memory, EEPROM) or other types of memory, however The present invention is not limited to the above. For example, the display device has three display modes of 40HZ, 48HZ and 60HZ, then when the screen frequency of the current display screen is in the range of 35Hz-45Hz, the sensing module will capture the corresponding 35Hz-45Hz in the storage module (for example, the first A picture frequency) of the first common voltage, and output the first common voltage to the display panel, wherein the first common voltage is located in the storage space in the storage module; when the picture frequency of the current display picture is in the range of 45Hz-55Hz, the sensing The module will capture the second common voltage corresponding to 45Hz-45Hz (for example, the second screen frequency) in the storage module, and output the second common voltage to the display panel, wherein the second common voltage is located in the storage space in the storage module; When the screen frequency of the current display screen is in the range of 55Hz-65Hz, the sensing module will capture the third common voltage corresponding to 55Hz-65Hz (for example, the third screen frequency) in the storage module, and output the third common voltage to the display panel, wherein the third common voltage is located in the storage space in the storage module 4 . In other embodiments, the storage module can also choose to store the fourth common voltage, the fifth common voltage..., and it depends on the number of display modes that the display device 1 has. The present invention is not limited to this The exemplified quantity of the embodiment.

其中,可利用I2C(内部集成电路,inter-integrated circuit)接口透过串行数据信号(SDA)及串行时序信号(SCL)将对应不同画面频率对应调整的上述各个公共电压写入存储模组的各个存储空间。例如将画面频率40Hz下所调整的(或对应的)第一公共电压(Vcom1)储存在存储空间;将画面频率48Hz下所调整的(或对应的)第二公共电压(Vcom2)储存在存储空间;将画面频率60Hz下所调整的(或对应的)第三公共电压(Vcom3)储存在存储空间。Among them, the I2C (inter-integrated circuit) interface can be used to write the above-mentioned common voltages corresponding to different screen frequencies into the storage module through the serial data signal (SDA) and the serial timing signal (SCL). each storage space. For example, store the adjusted (or corresponding) first common voltage (Vcom1) at a picture frequency of 40Hz in the storage space; store the adjusted (or corresponding) second common voltage (Vcom2) at a picture frequency of 48Hz in the storage space ; Store the adjusted (or corresponding) third common voltage ( Vcom3 ) at the frame frequency of 60 Hz in the storage space.

综上所述,本发明的显示装置中的存储模组存储有对应多个不同画面频率的Vcom,可通过检测显示装置的画面频率来输出与该画面频率对应的Vcom,使得显示装置无论在哪种画面频率下均可调整至最佳的Vcom,从而降低或避免画面闪烁现象发生,提高显示装置的显示品质。To sum up, the storage module in the display device of the present invention stores Vcom corresponding to a plurality of different picture frequencies, and can output the Vcom corresponding to the picture frequency by detecting the picture frequency of the display device, so that no matter where the display device is The optimal Vcom can be adjusted under various picture frequencies, so as to reduce or avoid picture flickering and improve the display quality of the display device.

藉由以上较佳具体实施例的详述,是希望能更加清楚描述本发明的特征与精神,而并非以上述所揭露的较佳具体实施例来对本发明的保护范围加以限制。相反地,其目的是希望能涵盖各种改变及具相等性的安排于本发明所欲申请的权利要求的保护范围内。因此,本发明所申请的权利要求的保护范围应该根据上述的说明作最宽广的解释,以致使其涵盖所有可能的改变以及具相等性的安排。Through the above detailed description of the preferred embodiments, it is hoped that the characteristics and spirit of the present invention can be described more clearly, and the protection scope of the present invention is not limited by the preferred embodiments disclosed above. On the contrary, the intention is to cover various changes and equivalent arrangements within the protection scope of the appended claims of the present invention. Therefore, the protection scope of the claims applied for in the present invention should be interpreted in the broadest way based on the above description, so as to cover all possible changes and equivalent arrangements.

Claims (10)

1. a display device, is characterized in that this display device comprises:
Display panel, in order to display frame; And
Public voltage generating circuit, comprising:
Store module, there is multiple storage space, in order to store multiple common electric voltage respectively, wherein each common electric voltage each different storage space corresponding, and the frame frequency scope that each common electric voltage is corresponding different; And
Sensing module, be electrically connected this display panel and this storage module, this sensing module captures the frame frequency of this picture from this display panel and judges this frame frequency, when this frame frequency is positioned at the first frame frequency scope, this sensing module export in the plurality of common electric voltage to should the first common electric voltage of the first frame frequency scope to this display panel; When this frame frequency is positioned at the second frame frequency scope, this sensing module export in the plurality of common electric voltage to should the second common electric voltage of the second frame frequency scope to this display panel.
2. display device as claimed in claim 1, is characterized in that this sensing module comprises:
Sensing cell, this sensing cell is in order to capture and to judge this frame frequency, and when this frame frequency is positioned at the first frame frequency scope, determine the primary importance information of this first common electric voltage that this first frame frequency scope is corresponding and the storage space of this first common electric voltage in this storage module; When this frame frequency is positioned at the second frame frequency scope, determine the second place information of this second common electric voltage that this second frame frequency scope is corresponding and the storage space of this second common electric voltage in this storage module; And
Common electric voltage output unit, this storage module of this electric connection and this display panel, when this frame frequency is positioned at the first frame frequency scope, this common electric voltage output unit receives this primary importance information, and exports this first common electric voltage corresponding to this primary importance information to this display panel; When this frame frequency is positioned at the second frame frequency scope, this common electric voltage output unit receives this second place information, and exports this second common electric voltage corresponding to this second place information to this display panel.
3. display device as claimed in claim 2, is characterized in that this sensing cell is Y type diode.
4. display device as claimed in claim 1, is characterized in that this storage module is EEPROM (Electrically Erasable Programmable Read Only Memo).
5. display device as claimed in claim 1, is characterized in that the plurality of common electric voltage writes each storage space of this storage module by clock signal and data-signal.
6. display device as claimed in claim 1, is characterized in that this display device is liquid crystal indicator.
7. a method of adjustment for display device, is characterized in that this method of adjustment comprises:
Store multiple common electric voltage in multiple storage space, and each common electric voltage each different storage space corresponding, the frame frequency scope that each common electric voltage is corresponding different;
Capture and judge the frame frequency of display device; And
When this frame frequency is positioned at the first frame frequency scope, export in the plurality of common electric voltage should the first common electric voltage of the first frame frequency scope; When this frame frequency is positioned at the second frame frequency scope, export in the plurality of common electric voltage should the second common electric voltage of the second frame frequency scope.
8. the method for adjustment of display device as claimed in claim 7, is characterized in that this acquisition and judges the frame frequency of display device; And deserve this frame frequency when being positioned at the first frame frequency scope, export in the plurality of common electric voltage should the first common electric voltage of the first frame frequency scope; When this frame frequency is positioned at the second frame frequency scope, to export in the plurality of common electric voltage should the step of the second common electric voltage of the second frame frequency scope comprise:
Capture and judge this frame frequency, and when this frame frequency is positioned at the first frame frequency scope, determining the primary importance information of this first common electric voltage that this first frame frequency scope is corresponding and the storage space of this first common electric voltage in this storage module; When this frame frequency is positioned at the second frame frequency scope, determine the second place information of this second common electric voltage that this second frame frequency scope is corresponding and the storage space of this second common electric voltage in this storage module; And
When this frame frequency is positioned at the first frame frequency scope, export this first common electric voltage to this display panel according to this primary importance information; When this frame frequency is positioned at the second frame frequency scope, export this second common electric voltage to this display panel according to this second place information.
9. the method for adjustment of display device as claimed in claim 7, is characterized in that the plurality of common electric voltage writes each storage space by clock signal and data-signal.
10. the method for adjustment of display device as claimed in claim 7, is characterized in that this display device is liquid crystal indicator.
CN201310355116.2A 2013-08-15 2013-08-15 Display device and adjusting method thereof Pending CN104376820A (en)

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CN104766582A (en) * 2015-04-24 2015-07-08 合肥京东方光电科技有限公司 Regulating system, regulating method thereof and display device
CN104809991A (en) * 2015-04-03 2015-07-29 深圳市金立通信设备有限公司 Method for determining reference voltage of display screen
CN107039013A (en) * 2017-05-25 2017-08-11 上海中航光电子有限公司 A kind of display driver circuit plate, its driving method and display device
CN107452347A (en) * 2016-05-31 2017-12-08 Iml国际 Variable VCOM level generators
CN107464540A (en) * 2017-09-26 2017-12-12 京东方科技集团股份有限公司 Liquid crystal display, display panel and its VCOM voltage control methods and device
WO2017210921A1 (en) * 2016-06-06 2017-12-14 深圳市华星光电技术有限公司 Common electrode driving module and liquid crystal display panel
CN108458766A (en) * 2018-04-20 2018-08-28 重庆电子工程职业学院 A kind of low power-consumption intelligent flowmeter
CN108877724A (en) * 2018-08-21 2018-11-23 信利半导体有限公司 A kind of LCD driving circuit for supporting a variety of frame per second to show
CN109215607A (en) * 2018-11-12 2019-01-15 惠科股份有限公司 Display panel driving method and device and computer equipment
CN109313881A (en) * 2016-07-01 2019-02-05 英特尔公司 Display controller with the multiple common voltages for corresponding to multiple refresh rates
CN110910809A (en) * 2019-11-25 2020-03-24 Tcl华星光电技术有限公司 Drive circuit and display device
CN111063288A (en) * 2019-12-23 2020-04-24 深圳市华星光电半导体显示技术有限公司 Driving method and driving device of display panel
CN113674713A (en) * 2021-08-20 2021-11-19 京东方科技集团股份有限公司 Method and device for improving screen flicker and display device
CN115240610A (en) * 2022-07-28 2022-10-25 紫光计算机科技有限公司 Voltage adjusting method and device of chip, electronic equipment and storage medium
US11961440B2 (en) 2021-09-23 2024-04-16 HKC Corporation Limited Method for driving display device, and display device
WO2024234726A1 (en) * 2023-05-17 2024-11-21 华为技术有限公司 Refresh rate switching method and terminal device

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104809991A (en) * 2015-04-03 2015-07-29 深圳市金立通信设备有限公司 Method for determining reference voltage of display screen
CN104766582A (en) * 2015-04-24 2015-07-08 合肥京东方光电科技有限公司 Regulating system, regulating method thereof and display device
CN107452347B (en) * 2016-05-31 2021-09-14 安恩科技香港有限公司 Variable VCOM level generator
CN107452347A (en) * 2016-05-31 2017-12-08 Iml国际 Variable VCOM level generators
US10147376B2 (en) 2016-06-06 2018-12-04 Shenzhen China Star Optoelectronics Technology Co., Ltd Common electrode driving module and liquid crystal display panel
WO2017210921A1 (en) * 2016-06-06 2017-12-14 深圳市华星光电技术有限公司 Common electrode driving module and liquid crystal display panel
CN109313881A (en) * 2016-07-01 2019-02-05 英特尔公司 Display controller with the multiple common voltages for corresponding to multiple refresh rates
US11335291B2 (en) 2016-07-01 2022-05-17 Intel Corporation Display controller with multiple common voltages corresponding to multiple refresh rates
CN107039013A (en) * 2017-05-25 2017-08-11 上海中航光电子有限公司 A kind of display driver circuit plate, its driving method and display device
CN107464540A (en) * 2017-09-26 2017-12-12 京东方科技集团股份有限公司 Liquid crystal display, display panel and its VCOM voltage control methods and device
US10706797B2 (en) 2017-09-26 2020-07-07 Boe Technology Group Co., Ltd. Liquid crystal display, display panel and reference voltage control method and device
CN108458766A (en) * 2018-04-20 2018-08-28 重庆电子工程职业学院 A kind of low power-consumption intelligent flowmeter
CN108877724A (en) * 2018-08-21 2018-11-23 信利半导体有限公司 A kind of LCD driving circuit for supporting a variety of frame per second to show
CN109215607A (en) * 2018-11-12 2019-01-15 惠科股份有限公司 Display panel driving method and device and computer equipment
US11398203B2 (en) 2018-11-12 2022-07-26 HKC Corporation Limited Method and device for driving display panel
CN110910809A (en) * 2019-11-25 2020-03-24 Tcl华星光电技术有限公司 Drive circuit and display device
CN111063288A (en) * 2019-12-23 2020-04-24 深圳市华星光电半导体显示技术有限公司 Driving method and driving device of display panel
CN111063288B (en) * 2019-12-23 2024-04-02 深圳市华星光电半导体显示技术有限公司 Driving method and driving device of display panel
CN113674713A (en) * 2021-08-20 2021-11-19 京东方科技集团股份有限公司 Method and device for improving screen flicker and display device
US11961440B2 (en) 2021-09-23 2024-04-16 HKC Corporation Limited Method for driving display device, and display device
CN115240610A (en) * 2022-07-28 2022-10-25 紫光计算机科技有限公司 Voltage adjusting method and device of chip, electronic equipment and storage medium
WO2024234726A1 (en) * 2023-05-17 2024-11-21 华为技术有限公司 Refresh rate switching method and terminal device

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Application publication date: 20150225