WO2020042673A1 - 灰阶电压调节装置和调节方法、显示装置 - Google Patents

灰阶电压调节装置和调节方法、显示装置 Download PDF

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WO2020042673A1
WO2020042673A1 PCT/CN2019/087222 CN2019087222W WO2020042673A1 WO 2020042673 A1 WO2020042673 A1 WO 2020042673A1 CN 2019087222 W CN2019087222 W CN 2019087222W WO 2020042673 A1 WO2020042673 A1 WO 2020042673A1
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voltage
input
gray
input voltage
fixed
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PCT/CN2019/087222
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English (en)
French (fr)
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兰传艳
申丽霞
喻勇
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京东方科技集团股份有限公司
成都京东方光电科技有限公司
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Priority to US16/608,524 priority Critical patent/US11069296B2/en
Publication of WO2020042673A1 publication Critical patent/WO2020042673A1/zh

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3696—Generation of voltages supplied to electrode drivers
    • 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
    • G09G3/2007—Display of intermediate tones
    • 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
    • G09G3/3258—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 with pixel circuitry controlling the voltage across the light-emitting element
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen

Definitions

  • the present disclosure relates to the field of display technology, and in particular, to a gray-scale voltage adjustment device and method, and a display device.
  • a display panel such as AMOLED (Active Matrix, Organic Light Emitting Diode, Active Matrix Organic Light Emitting Diode) is provided with a plurality of pixel units, and the luminance of the pixel unit is determined by the gray-scale voltage provided by the voltage dividing circuit.
  • the input voltage of the voltage dividing circuit is a fixed value.
  • a gray-scale voltage adjustment device including: a voltage dividing circuit configured to generate a gray-scale voltage according to a first input voltage and a second input voltage; a first voltage regulator, It is configured to adjust the first fixed voltage to output the first input voltage, so that the voltage dividing circuit can generate a predetermined number of grayscale steps for all display brightness.
  • the first input voltage is greater than the second input voltage.
  • the first voltage regulator is configured to perform voltage adjustment on the first fixed voltage using a first reference voltage to obtain the first input voltage.
  • the first voltage regulator is a voltage amplifier.
  • the adjustment device further includes: a second voltage regulator configured to adjust a second fixed voltage to output the second input voltage.
  • the second voltage regulator is configured to perform voltage adjustment on the second fixed voltage using a second reference voltage to obtain the second input voltage.
  • the second voltage regulator is a voltage amplifier.
  • the aforementioned adjusting device further comprises: a voltage controller configured to output the first reference voltage and the second reference voltage according to a required display brightness.
  • a display device including the grayscale voltage adjustment device according to any one of the above embodiments.
  • a gray-scale voltage adjustment method including: performing voltage adjustment on a first fixed voltage to obtain a first input voltage; and inputting the first input voltage and the second input voltage
  • the voltage dividing circuit generates a grayscale voltage, so that the voltage dividing circuit can generate a predetermined number of grayscale steps for all display brightness.
  • the first input voltage is greater than the second input voltage.
  • performing voltage adjustment on the first fixed voltage includes: adjusting the first fixed voltage by using a first reference voltage to obtain the first input voltage.
  • the adjustment method further includes: performing voltage adjustment on the second fixed voltage to obtain the second input voltage.
  • performing voltage adjustment on the second fixed voltage includes: adjusting the second fixed voltage by using a second reference voltage to obtain the second input voltage.
  • the adjustment method further includes: determining the first reference voltage and the second reference voltage according to a required display brightness.
  • FIG. 1 is a schematic structural diagram of a grayscale voltage adjusting device according to an embodiment of the present disclosure
  • FIG. 2 is a schematic structural diagram of a gray-scale voltage adjusting device according to another embodiment of the present disclosure.
  • FIG. 3 is a schematic structural diagram of a grayscale voltage adjusting device according to another embodiment of the present disclosure.
  • FIG. 4 is a schematic structural diagram of a gray-scale voltage adjusting device according to another embodiment of the present disclosure.
  • FIG. 5 is a schematic structural diagram of a gray-scale voltage adjusting device according to another embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of a gray-scale voltage adjusting device according to another embodiment of the present disclosure.
  • FIG. 7 is a schematic flowchart of a grayscale voltage adjustment method according to an embodiment of the present disclosure.
  • the inventor of the present disclosure has found that in the related art, since the input voltage of the voltage dividing circuit is a fixed value, the step voltage generated by the voltage dividing circuit is also fixed. In the case of low grayscale and low brightness, since the voltage range actually used is small, the number of steps actually used is reduced, so that a sufficient step voltage cannot be obtained, and the display effect is reduced. For example, if the potentials of the two input terminals of the voltage divider circuit are 6 volts and 1 volt, respectively, the voltage across is 5 volts. If the displayed data is 10 bits, the trans-voltage range is divided into 1024 steps, and the step voltage of each step is 0.005 volts.
  • the grayscale voltage range actually used is between 1 volt and 6 volts, and the number of steps that can be used at this time is 1024.
  • the grayscale voltage range actually used is between 1 volt and 2 volts. Because of these 1024 steps, only 204 steps are between 1 and 2 volts, and the remaining 820 steps are between 2 and 6 volts. In this case, only 204 steps can be used. Because insufficient step voltage cannot be obtained, the low grayscale picture transition effect is not good.
  • the present disclosure proposes a grayscale voltage adjustment scheme.
  • the voltage division circuit By adjusting the input voltage of the voltage division circuit, the voltage division circuit generates a predetermined number of grayscale steps for a desired display brightness, thereby improving the display effect.
  • FIG. 1 is a schematic structural diagram of a grayscale voltage adjusting device according to an embodiment of the present disclosure. As shown in FIG. 1, the gray-scale voltage adjusting device includes a voltage dividing circuit 1 and a first voltage regulator 2.
  • the voltage dividing circuit 1 is configured to generate a grayscale voltage according to the first input voltage V input1 and the second input voltage V input2 .
  • the first voltage regulator 2 is configured to adjust the first fixed voltage V1 to output a first input voltage V input1 , so that the voltage dividing circuit 1 can generate a predetermined number of grayscale steps for all display brightness.
  • the first input voltage V input1 is greater than the second input voltage V input2 .
  • the input voltage of the voltage dividing circuit is adjusted so that the voltage dividing circuit can generate a predetermined number of gray-scale steps for all display brightness, thereby reducing the In the case of low brightness, the accuracy of the step voltage can be improved, thereby effectively improving the transition effect of the low grayscale picture.
  • the potentials of the two input terminals of the voltage dividing circuit are 6 volts and 1 volt, respectively, and the voltage across is 5 volts.
  • the cross-voltage range is divided into 1024 steps, and the step voltage is 0.005 volts.
  • the cross-voltage is changed to 1 volt by adjusting the input potential of 6 volts to 2 volts.
  • the span voltage range is divided into 1024 steps, the step voltage is 0.001 volt. That is, with a pixel brightness of 5nit, the number of steps that can be used is still 1024.
  • the voltage divider circuit can generate a predetermined number of grayscale steps for all display brightness, thereby improving the accuracy of the step voltage under low grayscale and low brightness conditions, thereby effectively improving low grayscale. Effect of the transition picture.
  • FIG. 2 is a schematic structural diagram of a grayscale voltage adjusting device according to another embodiment of the present disclosure.
  • the first input terminal of the first voltage regulator 2 is configured to receive a first fixed voltage V1.
  • the second input terminal of the first voltage regulator 2 is configured to receive a first reference voltage V ref1 .
  • the first voltage regulator 2 uses the first reference voltage V ref1 to perform voltage adjustment on the first fixed voltage V1.
  • An output terminal of the first voltage regulator 2 is configured to output a first input voltage V input1 .
  • the first fixed voltage V1 is adjusted by using the first reference voltage V ref1 to obtain a desired first input voltage V input1 .
  • the first fixed voltage V1 is 6 volts. According to the current display brightness, the first input voltage V input1 of the voltage dividing circuit needs to be adjusted to 2 volts. In this case, the first voltage regulator 2 uses the first reference voltage V ref1 to perform voltage adjustment on the first fixed voltage V1 so as to output a first input voltage V input1 of 2 volts.
  • the first voltage regulator 2 is a voltage amplifier or other device capable of adjusting a voltage value.
  • FIG. 3 is a schematic structural diagram of a gray-scale voltage adjusting device according to another embodiment of the present disclosure. The difference between FIG. 3 and FIG. 2 is that in the embodiment shown in FIG. 3, the gray-scale voltage adjustment device further includes a voltage controller 3.
  • the voltage controller 3 is configured to output a first reference voltage V ref1 according to a required display brightness.
  • the voltage controller 3 outputs a corresponding first reference voltage V ref1 according to a required display brightness.
  • the first voltage regulator 2 uses the first reference voltage V ref1 to perform voltage adjustment on the first fixed voltage V1 to obtain a desired first input voltage V input1 .
  • FIG. 4 is a schematic structural diagram of a gray-scale voltage adjusting device according to another embodiment of the present disclosure. The difference between FIG. 4 and FIG. 1 is that in the embodiment shown in FIG. 4, the gray-scale voltage adjusting device further includes a second voltage regulator 4.
  • the second voltage regulator 4 is configured to regulate the second fixed voltage V2 to output a second input voltage V input2 . That is, in the embodiment shown in FIG. 4, the input voltages of the two input terminals of the voltage dividing circuit can be adjusted as required. Therefore, the input voltage interval of the voltage dividing circuit can be adjusted as required.
  • FIG. 5 is a schematic structural diagram of a gray-scale voltage adjusting device according to another embodiment of the present disclosure.
  • the first input terminal of the second voltage regulator 4 is configured to receive a second fixed voltage V2.
  • the second input terminal of the second voltage regulator 4 is configured to receive a second reference voltage V ref2 .
  • the second voltage regulator 4 uses the second reference voltage V ref2 to adjust the voltage of the second fixed voltage V2 so as to obtain a desired second input voltage V input2 .
  • the first fixed voltage V1 is 6 volts and the second fixed voltage V2 is one.
  • the first input voltage V input1 of the voltage divider circuit needs to be adjusted to 5 volts
  • the second input voltage V input2 of the voltage divider circuit is adjusted to 2 volts.
  • the first voltage regulator 2 uses the first reference voltage V ref1 to perform voltage adjustment on the first fixed voltage V1 so as to output a first input voltage V input1 of 5 volts.
  • the second voltage regulator 4 uses the second reference voltage V ref2 to adjust the voltage of the second fixed voltage V2 so as to obtain a second input voltage V input2 of 2 volts.
  • the second voltage regulator 4 is a voltage amplifier or other device capable of adjusting a voltage value.
  • FIG. 6 is a schematic structural diagram of a gray-scale voltage adjusting device according to another embodiment of the present disclosure.
  • FIG. 6 The difference between FIG. 6 and FIG. 3 is that in the embodiment shown in FIG. 6, in addition to outputting the first reference voltage V ref1 according to the required display brightness, the voltage controller 3 further outputs the second reference voltage V ref1 according to the required display brightness. Reference voltage V ref2 .
  • the two input voltages of the voltage dividing circuit can be adjusted by the control of the voltage controller 3.
  • An embodiment of the present disclosure further provides a display device including any one of the grayscale voltage adjustment devices described above.
  • the display device may be: LCD (Liquid Crystal Display), LED (Light Emitting Diode, light emitting diode) display, OLED (Organic Light Emitting Diode, organic light emitting diode), QLED (Quantum Dot Light Emitting Diode, quantum dot light emitting) (Diode) displays, AMOLED displays, mobile phones, tablet computers, televisions, notebook computers, digital photo frames, navigators and any other products or components with display functions.
  • LCD Liquid Crystal Display
  • LED Light Emitting Diode, light emitting diode
  • OLED Organic Light Emitting Diode
  • QLED Quantum Dot Light Emitting Diode, quantum dot light emitting
  • AMOLED displays mobile phones, tablet computers, televisions, notebook computers, digital photo frames, navigators and any other products or components with display functions.
  • FIG. 7 is a schematic flowchart of a grayscale voltage adjustment method according to an embodiment of the present disclosure.
  • step 701 the first fixed voltage is adjusted to obtain a first input voltage.
  • the first fixed voltage is adjusted by using the first reference voltage to obtain a first input voltage.
  • the magnitude of the first reference voltage may be determined according to a required display brightness.
  • the first fixed voltage V1 is 6 volts. According to the current display brightness, the first input voltage V input1 of the voltage dividing circuit needs to be adjusted to 2 volts. In this case, the first fixed voltage V1 is adjusted by using the first reference voltage V ref1 to obtain a first input voltage V input1 of 2 volts.
  • step 702 the first input voltage and the second input voltage are input to a voltage dividing circuit to generate a grayscale voltage, so that the voltage dividing circuit can generate a predetermined number of grayscale steps for all display brightness.
  • the second fixed voltage is adjusted to obtain a second input voltage.
  • the second reference voltage is used to adjust the second fixed voltage to obtain a second input voltage.
  • the second reference voltage may be determined according to the required display brightness.
  • the first fixed voltage V1 is 6 volts and the second fixed voltage V2 is one.
  • the first input voltage V input1 of the voltage divider circuit needs to be adjusted to 5 volts
  • the second input voltage V input2 of the voltage divider circuit is adjusted to 2 volts.
  • the first fixed voltage V1 is voltage-adjusted by using the first reference voltage V ref1 to output a first input voltage V input1 of 5 volts.
  • the second fixed voltage V2 is adjusted by using the second reference voltage V ref2 to obtain a second input voltage V input2 of 2 volts.
  • the first input voltage is greater than the second input voltage.
  • the input voltage of the voltage dividing circuit is adjusted so that the voltage dividing circuit can generate a predetermined number of grayscale steps for all display brightness, thereby reducing the In the case of low brightness, the accuracy of the step voltage can be improved, thereby effectively improving the transition effect of the low grayscale picture.

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Abstract

一种灰阶电压调节装置和方法、显示装置。灰阶电压调节装置包括分压电路（1）和第一电压调节器（2），分压电路（1）被配置为根据第一输入电压（V input1）及第二输入电压（V input2）产生灰阶电压，第一电压调节器（2）被配置为对第一固定电压（V1）进行调节以输出第一输入电压（V input1），使得分压电路（1）能够对于所有显示亮度均产生预定数量的灰阶阶梯。通过调节分压电路（1）的输入电压，以便分压电路（1）能够对于所有显示亮度均产生预定数量的灰阶阶梯，由此在低灰阶低亮度情况下能够提高阶梯电压的精度，从而有效改善低灰阶画面的过渡效果。

Description

灰阶电压调节装置和调节方法、显示装置
相关申请的交叉引用
本申请是以CN申请号为201811000940.5，申请日为2018年8月30日的申请为基础，并主张其优先权，该CN申请的公开内容在此作为整体引入本申请中。
技术领域
本公开涉及显示技术领域，特别涉及一种灰阶电压调节装置和调节方法、显示装置。
背景技术
在诸如AMOLED(Active Matrix Organic Light Emitting Diode，有源矩阵有机发光二极体)的显示面板中设有多个像素单元，像素单元的发光亮度由分压电路所提供的灰阶电压所决定。在相关技术中，分压电路的输入电压为固定值。
发明内容
根据本公开实施例的第一方面，提供一种灰阶电压调节装置，包括：分压电路，被配置为根据第一输入电压及第二输入电压产生灰阶电压；第一电压调节器，被配置为对第一固定电压进行调节，以输出所述第一输入电压，使得所述分压电路能够对于所有显示亮度均产生预定数量的灰阶阶梯。
在一些实施例中，所述第一输入电压大于所述第二输入电压。
在一些实施例中，所述第一电压调节器被配置为利用第一参考电压对所述第一固定电压进行电压调节，以得到所述第一输入电压。
在一些实施例中，所述第一电压调节器为电压放大器。
在一些实施例中，上述调节装置还包括：第二电压调节器，被配置为对第二固定电压进行调节，以输出所述第二输入电压。
在一些实施例中，所述第二电压调节器被配置为利用第二参考电压对所述第二固定电压进行电压调节，以得到所述第二输入电压。
在一些实施例中，所述第二电压调节器为电压放大器。
在一些实施例中，上述调节装置还包括：电压控制器，被配置为根据所需显示亮 度输出所述第一参考电压和所述第二参考电压。
根据本公开实施例的第二方面，提供一种显示装置，包括如上述任一实施例涉及的灰阶电压调节装置。
根据本公开实施例的第三方面，提供一种灰阶电压调节方法，包括：对第一固定电压进行电压调节，以得到第一输入电压；将所述第一输入电压及第二输入电压输入分压电路以产生灰阶电压，使得所述分压电路能够对于所有显示亮度均产生预定数量的灰阶阶梯。
在一些实施例中，所述第一输入电压大于所述第二输入电压。
在一些实施例中，对第一固定电压进行电压调节包括：利用第一参考电压对所述第一固定电压进行调节，以得到所述第一输入电压。
在一些实施例中，上述调节方法还包括：对第二固定电压进行电压调节，以得到所述第二输入电压。
在一些实施例中，对第二固定电压进行电压调节包括：利用第二参考电压对所述第二固定电压进行调节，以得到所述第二输入电压。
在一些实施例中，上述调节方法还包括：根据所需显示亮度确定所述第一参考电压和所述第二参考电压。
通过以下参照附图对本公开的示例性实施例的详细描述，本公开的其它特征及其优点将会变得清楚。
附图说明
构成说明书的一部分的附图描述了本公开的实施例，并且连同说明书一起用于解释本公开的原理。
参照附图，根据下面的详细描述，可以更加清楚地理解本公开，其中：
图1是根据本公开一个实施例的灰阶电压调节装置的结构示意图；
图2是根据本公开另一个实施例的灰阶电压调节装置的结构示意图；
图3是根据本公开又一个实施例的灰阶电压调节装置的结构示意图；
图4是根据本公开又一个实施例的灰阶电压调节装置的结构示意图；
图5是根据本公开又一个实施例的灰阶电压调节装置的结构示意图；
图6是根据本公开又一个实施例的灰阶电压调节装置的结构示意图；
图7是根据本公开一个实施例的灰阶电压调节方法的流程示意图。
应当明白，附图中所示出的各个部分的尺寸并不是按照实际的比例关系绘制的。此外，相同或类似的参考标号表示相同或类似的构件。
具体实施方式
现在将参照附图来详细描述本公开的各种示例性实施例。对示例性实施例的描述仅仅是说明性的，决不作为对本公开及其应用或使用的任何限制。本公开可以以许多不同的形式实现，不限于这里所述的实施例。提供这些实施例是为了使本公开透彻且完整，并且向本领域技术人员充分表达本公开的范围。应注意到：除非另外具体说明，否则在这些实施例中阐述的部件和步骤的相对布置、材料的组分和数值应被解释为仅仅是示例性的，而不是作为限制。
本公开中使用的“第一”、“第二”以及类似的词语并不表示任何顺序、数量或者重要性，而只是用来区分不同的部分。“包括”或者“包含”等类似的词语意指在该词前的要素涵盖在该词后列举的要素，并不排除也涵盖其他要素的可能。
本公开使用的所有术语(包括技术术语或者科学术语)与本公开所属领域的普通技术人员理解的含义相同，除非另外特别定义。还应当理解，在诸如通用字典中定义的术语应当被解释为具有与它们在相关技术的上下文中的含义相一致的含义，而不应用理想化或极度形式化的意义来解释，除非这里明确地这样定义。
对于相关领域普通技术人员已知的技术、方法和设备可能不作详细讨论，但在适当情况下，所述技术、方法和设备应当被视为说明书的一部分。
本公开的发明人发现，在相关技术中，由于分压电路的输入电压为固定值，由此导致分压电路产生的阶梯电压也是固定的。在低灰阶低亮度情况下，由于实际使用的电压区间较小，因此导致实际使用的阶梯数减少，从而无法获得足够的阶梯电压，造成显示效果下降。例如，若分压电路的两个输入端输入的电位分别为6伏和1伏，则跨压为5伏。若显示数据为10bit，跨压范围被划分为1024个阶梯，每个阶梯的阶梯电压为0.005伏。在像素亮度为400nit的情况下，实际使用的灰阶电压范围在1伏至6伏之间，此时可使用的阶梯数量为1024个。在像素亮度为5nit的情况下，实际使用的灰阶电压范围在1伏至2伏之间。由于在这1024个阶梯中，仅有204个阶梯位于1伏至2伏之间，其余的820个阶梯位于2伏至6伏之间。在这种情况下，可使用的阶梯数量仅有204个。由于无法获得足够的阶梯电压，因此导致低灰阶画面过渡效果不好。
据此，本公开提出一种灰阶电压调节方案，通过调节分压电路的输入电压，以便分压电路针对所需显示亮度产生预定数量的灰阶阶梯，从而提高显示效果。
图1是根据本公开一个实施例的灰阶电压调节装置的结构示意图。如图1所示，灰阶电压调节装置包括分压电路1和第一电压调节器2。
分压电路1被配置为根据第一输入电压V input1及第二输入电压V input2产生灰阶电压。第一电压调节器2被配置为对第一固定电压V1进行调节，以输出第一输入电压V input1，使得分压电路1能够对于所有显示亮度均产生预定数量的灰阶阶梯。
在一些实施例中，第一输入电压V input1大于第二输入电压V input2。
在本公开上述实施例提供的灰阶电压调节装置中，通过对分压电路的输入电压大小进行调节，以便分压电路能够对于所有显示亮度均产生预定数量的灰阶阶梯，由此在低灰阶低亮度情况下能够提高阶梯电压的精度，从而有效改善低灰阶画面的过渡效果。
例如，分压电路的两个输入端输入的电位分别为6伏和1伏，跨压为5伏。在像素亮度为400nit的情况下，跨压范围被划分为1024个阶梯，阶梯电压为0.005伏。而在像素亮度为5nit的情况下，通过将输入电位6伏调节为2伏，从而将跨压改变为1伏。在跨压范围被划分为1024个阶梯的情况下，阶梯电压为0.001伏。也就是说，在像素亮度为5nit的情况下，能够使用的阶梯数量仍为1024个。显然，通过调节分压电路的输入电压，分压电路能够对于所有显示亮度均产生预定数量的灰阶阶梯，由此在低灰阶低亮度情况下能够提高阶梯电压的精度，从而有效改善低灰阶画面的过渡效果。
图2是根据本公开另一个实施例的灰阶电压调节装置的结构示意图。
如图2所示，第一电压调节器2的第一输入端被配置为接收第一固定电压V1。第一电压调节器2的第二输入端被配置为接收第一参考电压V ref1。第一电压调节器2利用第一参考电压V ref1对第一固定电压V1进行电压调节。第一电压调节器2的输出端被配置为输出第一输入电压V input1。通过利用第一参考电压V ref1对第一固定电压V1进行电压调节，以便得到所希望的第一输入电压V input1。
在一些实施例中，第一固定电压V1为6伏。根据当前的显示亮度，需要将分压电路的第一输入电压V input1调节为2伏。在这种情况下，第一电压调节器2利用第一参考电压V ref1对第一固定电压V1进行电压调节，以便输出2伏的第一输入电压V input1。
在一些实施例中，第一电压调节器2为电压放大器，或者其它能够对电压值进行调节的器件。
图3是根据本公开又一个实施例的灰阶电压调节装置的结构示意图。图3与图2的不同之处在于，在图3所示实施例中，灰阶电压调节装置还包括电压控制器3。
电压控制器3被配置为根据所需显示亮度输出第一参考电压V ref1。
例如，根据预先设置的显示亮度与分压电路输入电压之间的对应关系，电压控制器3根据所需要的显示亮度，输出相应的第一参考电压V ref1。第一电压调节器2利用该第一参考电压V ref1对第一固定电压V1进行电压调节，以得到期望的第一输入电压V input1。
图4是根据本公开又一个实施例的灰阶电压调节装置的结构示意图。图4与图1的不同之处在于，在图4所示实施例中，灰阶电压调节装置还包括第二电压调节器4。
第二电压调节器4被配置为对第二固定电压V2进行调节，以输出第二输入电压V input2。即，在图4所示实施例中，分压电路的两个输入端的输入电压均能根据需要进行调节。由此可根据需要调节分压电路的输入电压区间。
图5是根据本公开又一个实施例的灰阶电压调节装置的结构示意图。
如图5所示，第二电压调节器4的第一输入端被配置为接收第二固定电压V2。第二电压调节器4的第二输入端被配置为接收第二参考电压V ref2。第二电压调节器4利用第二参考电压V ref2对第二固定电压V2进行电压调节，以便得到所希望的第二输入电压V input2。
在一些实施例中，第一固定电压V1为6伏，第二固定电压V2为1。根据当前的显示亮度，需要将分压电路的第一输入电压V input1调节为5伏，将分压电路的第二输入电压V input2调节为2伏。在这种情况下，第一电压调节器2利用第一参考电压V ref1对第一固定电压V1进行电压调节，以便输出5伏的第一输入电压V input1。第二电压调节器4利用第二参考电压V ref2对第二固定电压V2进行电压调节，以便得到2伏的第二输入电压V input2。
在一些实施例中，第二电压调节器4为电压放大器，或者其它能够对电压值进行调节的器件。
图6是根据本公开又一个实施例的灰阶电压调节装置的结构示意图。
图6与图3的不同之处在于，在图6所示实施例中，电压控制器3除了根据所需显示亮度输出第一参考电压V ref1之外，还进一步根据所需显示亮度输出第二参考电压 V ref2。由此，通过电压控制器3的控制，能够对分压电路的两个输入电压进行调节。
本公开实施例还提供了一种显示装置，其包括上述任一种灰阶电压调节装置。该显示装置可以为：LCD(Liquid Crystal Display，液晶显示器)、LED(Light Emitting Diode，发光二极管)显示器、OLED(Organic Light Emitting Diode，有机发光二极管)、QLED(Quantum Dot Light Emitting Diode，量子点发光二极管)显示器、AMOLED显示器、手机、平板电脑、电视机、笔记本电脑、数码相框、导航仪等任何具有显示功能的产品或部件。
图7是根据本公开一个实施例的灰阶电压调节方法的流程示意图。
在步骤701，对第一固定电压进行电压调节，以得到第一输入电压。
在一些实施例中，利用第一参考电压对第一固定电压进行调节，以得到第一输入电压。例如，可根据所需显示亮度确定第一参考电压的大小。
在一些实施例中，第一固定电压V1为6伏。根据当前的显示亮度，需要将分压电路的第一输入电压V input1调节为2伏。在这种情况下，通过利用第一参考电压V ref1对第一固定电压V1进行电压调节，以得到2伏的第一输入电压V input1。
在步骤702，将第一输入电压及第二输入电压输入分压电路以产生灰阶电压，使得分压电路能够对于所有显示亮度均产生预定数量的灰阶阶梯。
在一些实施例中，通过对第二固定电压进行电压调节，以得到第二输入电压。
在一些实施例中，利用第二参考电压对第二固定电压进行调节，以得到第二输入电压。例如，可根据所需显示亮度确定第二参考电压。
在一些实施例中，第一固定电压V1为6伏，第二固定电压V2为1。根据当前的显示亮度，需要将分压电路的第一输入电压V input1调节为5伏，将分压电路的第二输入电压V input2调节为2伏。在这种情况下，通过利用第一参考电压V ref1对第一固定电压V1进行电压调节，以便输出5伏的第一输入电压V input1。通过利用第二参考电压V ref2对第二固定电压V2进行电压调节，以便得到2伏的第二输入电压V input2。
在一些实施例中，第一输入电压大于第二输入电压。
在本公开上述实施例提供的灰阶电压调节方法中，通过对分压电路的输入电压大小进行调节，以便分压电路能够对于所有显示亮度均产生预定数量的灰阶阶梯，由此在低灰阶低亮度情况下能够提高阶梯电压的精度，从而有效改善低灰阶画面的过渡效果。
至此，已经详细描述了本公开的实施例。为了避免遮蔽本公开的构思，没有描述 本领域所公知的一些细节。本领域技术人员根据上面的描述，完全可以明白如何实施这里公开的技术方案。
虽然已经通过示例对本公开的一些特定实施例进行了详细说明，但是本领域的技术人员应该理解，以上示例仅是为了进行说明，而不是为了限制本公开的范围。本领域的技术人员应该理解，可在不脱离本公开的范围和精神的情况下，对以上实施例进行修改或者对部分技术特征进行等同替换。本公开的范围由所附权利要求来限定。

Claims (15)

  1. 一种灰阶电压调节装置，包括：
    分压电路，被配置为根据第一输入电压及第二输入电压产生灰阶电压；
    第一电压调节器，被配置为对第一固定电压进行调节，以输出所述第一输入电压，使得所述分压电路能够对于所有显示亮度均产生预定数量的灰阶阶梯。
  2. 根据权利要求1的调节装置，其中，所述第一输入电压大于所述第二输入电压。
  3. 根据权利要求1的调节装置，其中，
    所述第一电压调节器被配置为利用第一参考电压对所述第一固定电压进行电压调节，以得到所述第一输入电压。
  4. 根据权利要求3的调节装置，其中，所述第一电压调节器为电压放大器。
  5. 根据权利要求3的调节装置，还包括：
    第二电压调节器，被配置为对第二固定电压进行调节，以输出所述第二输入电压。
  6. 根据权利要求5的调节装置，其中，
    所述第二电压调节器被配置为利用第二参考电压对所述第二固定电压进行电压调节，以得到所述第二输入电压。
  7. 根据权利要求6的调节装置，其中，所述第二电压调节器为电压放大器。
  8. 根据权利要求6的调节装置，还包括：
    电压控制器，被配置为根据所需显示亮度输出所述第一参考电压和所述第二参考电压。
  9. 一种显示装置，包括：
    如权利要求1-8中任一项所述的灰阶电压调节装置。
  10. 一种灰阶电压调节方法，包括：
    对第一固定电压进行电压调节，以得到第一输入电压；
    将所述第一输入电压及第二输入电压输入分压电路以产生灰阶电压，使得所述分压电路能够对于所有显示亮度均产生预定数量的灰阶阶梯。
  11. 根据权利要求10的调节方法，其中，所述第一输入电压大于所述第二输入电压。
  12. 根据权利要求10的调节方法，其中，对第一固定电压进行电压调节包括：
    利用第一参考电压对所述第一固定电压进行调节，以得到所述第一输入电压。
  13. 根据权利要求12的调节方法，还包括：
    对第二固定电压进行电压调节，以得到所述第二输入电压。
  14. 根据权利要求13的调节方法，其中，对第二固定电压进行电压调节包括：
    利用第二参考电压对所述第二固定电压进行调节，以得到所述第二输入电压。
  15. 根据权利要求14的调节方法，还包括：
    根据所需显示亮度确定所述第一参考电压和所述第二参考电压。
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