WO2015010378A1 - 一种显示模组驱动电压的调整方法及装置、显示装置 - Google Patents

一种显示模组驱动电压的调整方法及装置、显示装置 Download PDF

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Publication number
WO2015010378A1
WO2015010378A1 PCT/CN2013/085946 CN2013085946W WO2015010378A1 WO 2015010378 A1 WO2015010378 A1 WO 2015010378A1 CN 2013085946 W CN2013085946 W CN 2013085946W WO 2015010378 A1 WO2015010378 A1 WO 2015010378A1
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Prior art keywords
gray scale
transmittance
standard
driving voltage
relationship curve
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PCT/CN2013/085946
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English (en)
French (fr)
Inventor
王壮
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北京京东方光电科技有限公司
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Publication of WO2015010378A1 publication Critical patent/WO2015010378A1/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
    • 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
    • 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
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/145—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen

Definitions

  • the input drive voltage signal will produce a brightness output on the screen, but the brightness displayed on the screen is not proportional to the input drive voltage signal.
  • the relationship between the drive voltage (V) input to the display and its transmittance (T) is called the V ⁇ T relationship.
  • the display unit of the display is a box, so the V ⁇ T relationship actually reflects the electrical-optical response characteristics of the box. Human eyes When observing the display, the change in brightness will cause a change in the perception of the human eye. When the brightness is continuously increased, the brightness of the human eye will become saturated.
  • the standard grayscale voltage VGO-VG255 is connected in series by the source driver.
  • the resistor is obtained by partial pressure.
  • the standard grayscale voltage VGO-VG255 tends to divergence due to factors such as process and display panel characteristics, resulting in a discontinuous grayscale image on the display panel.
  • a fixed driving circuit can only generate a fixed set of voltage values, which requires the development of a driving voltage or a voltage dividing resistor that is matched with the display panels, but is found by the current method and measuring device. The output is in a certain error.
  • the actual gamma value of the display will allow an error range of ⁇ 0.1 or ⁇ 02 based on the target gamma value, and the debugging process is cumbersome.
  • Embodiments of the present invention provide a method and an adjustment device for adjusting a driving voltage of a display module
  • the display device is used to improve the adjustment precision of the driving voltage, and can reduce the workload of debugging and improve work efficiency.
  • An embodiment of the present invention provides a method for adjusting a driving voltage of a display module, where the method includes:
  • the above adjustment method compares the actual relationship between the driving voltage and the transmittance with the standard relationship between the standard gray scale and the transmittance, and can more accurately and effectively adjust the test driving voltage during the debugging process to obtain the display module.
  • the adjusted driving voltage at the same time, the method can be implemented by completely related software and hardware, and the method realizes intelligentization of driving voltage adjustment, reduces the workload of debugging, improves work efficiency, and avoids human factors. The disturbance caused.
  • the method further includes: determining, according to the adjusted driving voltage, a resistance value of the voltage dividing resistor corresponding to the adjusted driving voltage. According to the ratio between the resistance values of these voltage dividing resistors, the optimum resistance value required to obtain the adjusted driving voltage in the display module driving circuit can be obtained.
  • the method further includes: determining a relationship between a driving voltage to be tested and a standard gray level for determining a test driving voltage in the display module, and obtaining a test driving voltage corresponding to the adjustable gray level of the driving circuit;
  • the module provides a test drive voltage corresponding to the adjustable gray scale of the drive circuit.
  • the test drive voltage of each of the adjustable gray scales is within a voltage range in which the adjustable gray scale satisfies the target Gamma value, so that the display module can work normally.
  • determining a relationship between the driving voltage to be tested and the standard gray level in the display module comprises: collecting brightness data corresponding to the picture in the plurality of display modules under different driving voltages, and determining a plurality of driving voltages to be tested Correlation curve with transmittance; according to the relationship between standard gray scale and transmittance, obtain the standard relationship curve between standard gray scale and transmittance; and the relationship between each of the driving voltage and transmittance to be tested The curve is fitted to the standard relationship between the standard gray scale and the transmittance, and a relationship curve between the plurality of sets of driving voltages to be tested and the standard gray scale is obtained. From the relationship between the driving voltage to be tested and the standard gray scale in the determined display module, the voltage range of the test driving voltage required for each standard gray scale to satisfy the target gamma value can be obtained.
  • the obtaining the test driving voltage corresponding to the adjustable gray scale of the driving circuit comprises: obtaining multiple sets of each adjustable gray scale according to the relationship between the plurality of sets of driving voltages to be tested and the standard gray scale a voltage range of the test driving voltage when the target gamma value is satisfied; obtaining a test drive that simultaneously satisfies the adjustable gray scale of the plurality of display modules according to the voltage ranges of the plurality of sets of the adjustable driving gray voltages Voltage.
  • the test drive voltage obtained by this step can meet the needs of the above multiple display modules for normal operation.
  • G is the target gamma value
  • T is the transmittance
  • L is the standard gray scale
  • M is the maximum value of the standard gray scale L.
  • the standard gray scale and transmittance standard relationship curve is used as a target curve of the actual relationship curve between the adjustable gray scale and the transmittance.
  • An embodiment of the present invention provides an apparatus for adjusting a driving voltage of a display module, where the apparatus includes:
  • the acquisition module is configured to collect brightness data corresponding to the adjustable gray level of the driving circuit in the display module under the test driving voltage, and send the collected brightness data to the operation processing module; the operation processing module, ⁇ receiving The brightness data sent by the collection module, and determining an actual relationship between the adjustable gray level and the transmittance according to the brightness data; and an actual relationship curve between the adjustable gray level and the transmittance
  • the standard gray scale is compared with the transmittance standard curve to determine the difference between the actual relationship between the adjustable gray scale and the transmittance and the standard relationship between the standard gray scale and the transmittance, and a comparison result including the difference in the transmittance is sent to the adjustment module;
  • an adjusting module configured to receive the comparison result, and adjust the test driving voltage according to the difference of the transmittance, so that a difference in transmittance between the actual relationship curve and the standard relationship curve satisfies a setting requirement, And determine the driving voltage of the display module after adjustment.
  • the adjustment module is further configured to determine the adjustment according to the adjusted driving voltage.
  • the value of the voltage divider resistor corresponding to the entire driving voltage. According to the ratio between the resistance values of the voltage dividing resistors, the optimum resistance value required to obtain the adjusted driving voltage in the design of the display module driving circuit can be obtained.
  • the operation processing module is further configured to determine a relationship between a driving voltage to be tested and a standard gray scale for determining a test driving voltage in the display module, and obtain a test drive corresponding to the adjustable gray scale of the driving circuit.
  • a voltage; and a test driving voltage corresponding to the adjustable gray scale of the driving circuit is provided to the display module.
  • the determining the relationship between the test driving voltage and the standard gray scale comprises: collecting luminance data corresponding to the screens of the plurality of display modules under different driving voltages to be tested, and determining a plurality of driving voltages to be tested and a relationship curve of transmittance; a standard relationship curve between standard gray scale and transmittance according to a relationship between standard gray scale and transmittance; and a relationship curve between each of the driving voltages to be tested and the transmittance
  • the standard gray scale is matched with the standard curve of the transmittance, and a relationship curve between the plurality of sets of driving voltages to be tested and the standard gray scale is obtained. From the relationship between the driving voltage to be tested and the standard gray scale in the determined display module, the voltage range of the test driving voltage required for each standard gray scale to satisfy the target Gamma value can be obtained.
  • the obtaining the test driving voltage corresponding to the adjustable gray scale of the driving circuit comprises: obtaining, according to the relationship curves of the plurality of groups of driving voltages to be tested and the standard gray scale, obtaining, for each set of adjusted gray levels, a voltage range of the test driving voltage at the target gamma value; obtaining a test driving voltage that simultaneously satisfies the adjustable gray scale of the plurality of display modules according to the voltage ranges of the plurality of sets of the adjustable driving gray voltages of the plurality of display modules .
  • the test driving voltage can meet the needs of the above multiple display modules to work normally.
  • G is the target gamma value
  • T is the transmittance
  • L is the standard gray scale
  • M is the maximum value of the standard gray scale L.
  • the standard gray scale and transmittance standard relationship curve is used as a target curve of the actual relationship curve between the adjustable gray scale and the transmittance.
  • the embodiment of the invention provides a display device, which comprises the driving voltage adjusting device of the display module as described above.
  • the driving voltage of the display module of the display device is adjusted, the intelligent adjustment of the driving voltage is realized, thereby reducing the workload of debugging and improving the work. Efficiency, avoiding the interference caused by human factors.
  • the workload of debugging is reduced, the labor cost and the time cost are correspondingly reduced, thereby reducing the manufacturing cost of the display device.
  • FIG. 1 is a schematic flow chart of a method for adjusting a driving voltage in a display module according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram showing a relationship between driving voltage and transmittance in a module
  • Figure 3 is a schematic diagram showing the standard relationship between standard gray scale and transmittance
  • FIG. 4 is a schematic diagram of a method for obtaining a driving voltage of a display module
  • FIG. 5 is a schematic structural diagram of an apparatus for adjusting a driving voltage of a display module according to an embodiment of the present invention. detailed description
  • the embodiment of the invention provides a method and an adjustment device for adjusting the driving voltage of the display module, which are used for improving the adjustment precision of the driving voltage, and can reduce the workload of debugging and improve the working efficiency.
  • Embodiment 1 of the present invention provides a method for adjusting a driving voltage of a display module, where the method includes:
  • the adjusting method specifically includes:
  • Step 101 referring to FIG. 2, a series of driving voltages to be tested are respectively supplied to the plurality of display modules by the measuring instrument, and brightness data of each of the display modules under different driving voltages to be tested is collected, according to
  • the brightness data is obtained as a relationship between the driving voltage to be tested and the transmittance of each display module, that is, a V-T curve, wherein V represents a driving voltage and T represents a transmittance; and the providing is provided to the display module Among the series of driving voltages, the minimum value is 0v, and then gradually increases by the amplitude of OJv until the transmittance of the display module reaches! 00%.
  • the transmittance of the display module is within a certain range, which increases as the driving voltage to be tested gradually increases.
  • the display module may be a liquid crystal display module, or may be another display module such as an organic light emitting diode OLED, a plasma PDP, or a cathode ray CRT.
  • OLED organic light emitting diode
  • PDP plasma PDP
  • cathode ray CRT cathode ray CRT
  • Step 102 referring to FIG. 3, according to the relationship between the standard gray scale and the transmittance, a standard relationship curve between the standard gray scale L and the transmittance, that is, an L-T standard curve; wherein L represents a standard gray scale, Its value ranges from 0 to 255. 2.0, 2.2, 2, 4 in Figure 3 represent the target Gamma value. It can be seen from Fig. 3 that the transmittance corresponding to the same standard gray scale decreases as the target Gamma value gradually increases.
  • G is the target gamma value
  • T is the transmittance
  • L is the standard gray scale
  • M is the maximum value of the standard gray scale L.
  • Step 103 According to the relationship between the driving voltage to be tested and the transmittance of each display module obtained in step 101 and the standard relationship between the standard gray scale L and the transmittance obtained in step 102, each of the fitting curves is fitted. Displaying the relationship between the driving voltage of the module to be tested and the standard gray scale, that is, the V-L curve; according to the V-L curve of each display module, the test driving of each adjustable gray level in the display module is obtained.
  • the range of voltages; the standard gray scale represents the level of different brightness from the darkest to the brightest. The more intermediate levels, the more delicate the picture can be rendered.
  • the minimum standard grayscale value is 0 and the maximum standard grayscale value is 255, we will refer to the minimum standard grayscale value to the maximum standard grayscale value as 256 standard grayscales.
  • the entire standard gray scale cannot be obtained in the drive circuit, and only a part of it can be taken.
  • the part of the standard gray scale that can be obtained is called an adjustable gray scale.
  • the driving circuit in the display module can only take 0, 4, 8, 16-, 52, 76, 100, 131, 152, 176, 2.03.
  • Some standard grayscales such as 225, 239, 247, 251, 255, etc., so we will take some standard grayscales 0, 4, 8, 16, 52, 76, 100, 131, !
  • adjustable gray scales of the display module 52, 176, 203, 225, 239, 247, 251, 255 are referred to as adjustable gray scales of the display module. Then, according to the law that the transmittance corresponding to each standard gray scale gradually decreases as the target gamma value increases, and the light transmittance increases in a certain range with the gradual increase of the driving voltage to be tested. Regularly, the voltage range at which each adjustable gray scale satisfies the target gamma value (the target gamma value is 2, 2 with an error of ⁇ 0.2) is obtained, for example, the voltage range that the adjustable gray scale 76 satisfies. For [V76 2 . 4 , V76 2 .o
  • a plurality of sets of voltage ranges of the test driving voltage corresponding to the adjustable gray scales 76 can be obtained, specifically: the voltage corresponding to the adjustable gray scales 76 in the first display module The range is: SUU U 2 ] , the voltage range corresponding to the adjustable gray level 76 in the second display module is: S2[U 3 , U 4 ],..., the adjustable gray level 76 in the nth display module The corresponding voltage range is: Sn[U 2n4 , U 2 J.
  • the plurality of sets of voltage ranges corresponding to the adjustable gray scales 76 are intersected. As shown in FIG.
  • Step 104 outputting, by the voltage regulator, a test driving voltage corresponding to each adjustable gray level in the driving circuit, and then collecting brightness data of the screen of the display module under the test driving voltage by using a brightness tester, and according to the brightness The data determines the actual relationship between the adjustable gray scale and the transmittance.
  • Step 105 comparing the actual relationship between the adjustable gray scale and the transmittance and the standard relationship between the standard gray scale and the transmittance, and determining an actual relationship between the adjustable gray scale and the transmittance and The difference in transmittance between the standard gray scale and the transmittance standard curve.
  • Step 106 controlling the voltage regulator to adjust the output test driving voltage according to the difference of the transmittance and the preset voltage adjustment method, and then repeating the collection of the actual relationship between the adjustable gray scale and the transmittance and Alignment, until the difference between the actual relationship between the adjustable gray scale and the transmittance and the standard relationship between the standard gray scale and the transmittance meets the setting requirement, for example, the adjustable gray scale and Actual relationship curve of transmittance and standard curve of standard gray scale and transmittance
  • Step 107 after completing step 106, acquiring the adjusted driving voltage of the display module; or / and, by using the internal resistor divider principle of the voltage regulator, calculating the voltage dividing resistance corresponding to the adjusted driving voltage Value, through these resistance ratios, the optimum resistance value required for the design of the display module driving circuit can be obtained.
  • the test driving voltage of the gray scale in the plurality of display modules may be acquired without using the step 101, the step 102, and the step 103.
  • the developer can provide a set of test driving voltages for the plurality of display modules according to the product design experience, and then adjust the driving voltage of the display module through subsequent steps.
  • the second embodiment of the present invention provides a device for adjusting the driving voltage of the display module, and the structure thereof is as shown in FIG. 5.
  • the device for adjusting the driving voltage of the display module includes: an acquisition module 501, an operation processing module 502 and an adjustment module 503, specifically:
  • the acquisition module 501 is configured to collect brightness data corresponding to the adjustable gray level of the driving circuit in the display module under the test driving voltage, and send the collected brightness data to the operation processing module 502;
  • the operation processing module 502 receives the brightness data sent by the acquisition module 501, and determines an actual relationship between the adjustable gray level and the transmittance according to the brightness data; and the adjustable gray level and transmittance.
  • the actual relationship curve is compared with the standard gray scale and transmittance standard curve to determine the transmittance between the actual relationship between the adjustable gray scale and the transmittance and the standard relationship between the standard gray scale and the transmittance. a difference, and transmitting a comparison result including the difference in the transmittance to the adjustment module 503; the standard gray scale and transmittance standard relationship curve satisfies:
  • G is the target gamma value
  • T is the transmittance
  • L is the standard gray scale
  • M is the maximum value of the standard gray scale L.
  • the adjusting module 503 is configured to receive the comparison result, and adjust the test driving voltage according to the difference in transmittance in the result, so that the difference in transmittance between the actual relationship curve and the standard relationship curve is satisfied. Set the requirements and determine the drive voltage after the display module is adjusted.
  • the adjusting module 503 is further configured to determine a resistance value of the voltage dividing resistor corresponding to the adjusted driving voltage.
  • the collection module 501, the operation processing module 502, and the adjustment module 503 are also used to determine a test driving voltage of the display module, specifically:
  • the collecting module 501 collects brightness data of each screen of the display module under different driving voltages to be tested when a series of driving voltages to be tested are respectively supplied to the plurality of display modules by the measuring instrument, and Sended to the arithmetic processing module 502.
  • the minimum value of the series of driving voltages to be tested provided to the display module is 0v, and then gradually increases by the amplitude of O. l v until the transmittance of the display module reaches 100%.
  • the operation processing module 502 determines, according to the brightness data, a relationship between a driving voltage to be tested and a transmittance in each display module, as shown in FIG. 2; and the driving voltage and transmittance to be tested
  • the relationship curve is fitted with the standard gray scale and transmittance standard curve, and the relationship between the driving voltage to be tested and the standard gray scale in each display module is obtained, as shown in FIG. 3; as can be seen from FIG. 2,
  • the transmittance of the display module is within a certain range, which increases with the gradual increase of the driving voltage to be tested.
  • the transmittance corresponding to the same adjustable gray level follows the target gamma value. The gradual increase is 3 ⁇ 4i small.
  • each display module Obtaining, according to the v-L curve of each display module, a voltage range of the test driving voltage of each adjustable gray level in the display module; for example, for the display module, the display module is grayed out
  • the steps are 0, 4, 8, 16, 52, 76, 100, 131, 152, 176, 203, 22.5, 239, 247, 251, 255, respectively, according to the transmittance as the target gamma value increases
  • the small law, and the law that the light transmittance increases with the gradual increase of the driving voltage within a certain range can obtain that each adjustable gray level satisfies the target gamma value (with a target gamma value of 2.2, error voltage range of ⁇ 0.2 for example), for example adjustable to meet the 76 gray scale voltage range of [V76 2 4, V76 2 .o .];
  • a plurality of sets of voltage ranges corresponding to the adjustable gray scales 76 may be obtained, and the adjustment module 503 intersects the plurality of sets of voltage ranges corresponding to the adjustable gray scales 76 Obtaining a set of voltage ranges capable of simultaneously satisfying the plurality of display modules, and taking an intermediate value from the voltage range capable of simultaneously satisfying the plurality of display modules, as the plurality of display modules Adjusting the test driving voltage of the gray scale 76; similarly, the test driving voltage corresponding to the other adjustable gray scales can be obtained;
  • the operation processing module 502 is further configured to provide the display module with a test driving voltage corresponding to each adjustable gray level of the driving circuit.
  • a third embodiment of the present invention provides a display device including the device for adjusting the driving voltage of the display module described in the second embodiment.
  • the display device may be a display, a mobile phone, a television, a notebook, an all-in-one, or the like.
  • other essential components of the display device of the third embodiment are understood by those skilled in the art, and therefore are no longer used. Nor should it be construed as limiting the invention.
  • the actual relationship between the test driving voltage and the transmittance is compared with the standard relationship between the standard gray scale and the transmittance, as an adjustment driving.
  • the voltage method can more accurately and effectively adjust the test driving voltage during the debugging process; and, the method combines the actual relationship between the driving voltage and the transmittance with the standard grayscale and transmittance standard relationship curve. It is used to determine the test driving voltage when the adjustable gray scale in the display module satisfies the target gamma value; in addition, the mediation process can be completed by using a preset program, which realizes the intelligentization of the adjustment process and reduces the debugging work. Volume, improve work efficiency, while reducing the interference of artificial factors.

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Abstract

本发明实施例提供了一种显示模组的驱动电压的调整方法及调整装置、显示装置，用以提高驱动电压的调整精确度，减少调试的工作量，提高工作效率。所述方法包括：采集显示模组中驱动电路在测试驱动电压的作用下的可调灰阶所对应的亮度数据，并根据所述亮度数据确定可调灰阶与透过率的实际关系曲线；将所述可调灰阶与透过率的实际关系曲线和标准灰阶与透过率的标准关系曲线进行比较，确定两者之间的透过率的差异；根据所述差异对驱动电路的驱动电压进行调整，使得所述实际关系曲线与标准关系曲线之间的透过率的差异满足设定要求，并确定显示模组的调整后的驱动电压。

Description

一种显示模组驱动电压的调整方法及装置、 显示装置
本申请主张在 2013 年 07 月 22 日在中国提交的中国专利申请号 No. 201310308240.3的优先权， 其全部内容通过引用包含于此。
Figure imgf000003_0001
法及调整装置、 显示装置。
对于显示器来说， 输入的驱动电压信号将在屏幕上产生亮度输出， 但是 屏幕上显示的亮度与输入的驱动电压信号不成正比。 显示器中输入的驱动电 压 （V) 与其透射率 （T) 之间的相互关系称为 V~T关系曲线。 显示器的显示 单元是盒， 因此 V~T关系曲线实际上反应了盒的电一光响应特性。 人的眼睛 观察显示器时， 亮度大小的变化会相应地引起人眼明暗感觉的变化， 而当亮 度不断提高时， 人眼的明暗变化会不断趋于饱和。
一般而言， 由于显示面板的对比度 (contrast ratio)是取决于最大标准灰阶 值 255 与最小标准灰阶值 0， 标准灰阶电压 VGO- VG255 则由源极驱动器 (source driver)内的串接电阻分压而得。然而， 标准灰阶电压 VGO- VG255往往 会因制程与显示面板特性等因素的改变而产生离异， 进而造成显示面板出现 不连续的灰阶画面的现象。 现有技术中， 一个固定的驱动电路只能产生一组 固定的电压值， 这就需要开发出专门调试出与这些显示面板相互配套的驱动 电压或分压电阻， 但通过目前方法及测量装置找出的处在一定的误差， 一般 根据客户的不同要求， 显示器的实际伽马（Gamma)值会允许在目标 Gamma 值的基础上有 ± 0.1或 ±02的误差范围， 且调试过程比较繁琐。
本发明实施例提供了一种显示模组的驱动电压的调整方法及调整装置 显示装置， 用以提高驱动电压的调整精确度， 并能够减少调试的工作量， 提 高工作效率。
本发明实施例提供了一种显示模组的驱动电压的调整方法， 所述方法包 括：
采集显示模组中驱动电路在测试驱动电压的作用下的可调灰阶所对应的 亮度数据， 并根据所述亮度数据确定可调灰阶与透过率的实际关系曲线； 将 所述可调灰阶与透过率的实际关系曲线和标准灰阶与透过率的标准关系曲线 进行比较， 确定可调灰阶与透过率的实际关系曲线和标准灰阶与透过率的标 准关系曲线之间的透过率的差异； 根据所述透过率的差异对驱动电路的测试 驱动电压进行调整， 使得所述实际关系曲线与标准关系曲线之间的透过率的 差异满足设定要求， 并确定显示模组的调整后的驱动电压。 上述调整方法通 过将驱动电压与透过率的实际关系曲线与标准灰阶与透过率的标准关系曲线 进行比较， 可以更精确有效的对调试过程中的测试驱动电压进行调整， 获取 显示模组调整后的驱动电压； 同时， 所述方法可以完全相关的软件和硬件来 实现， 并且所述方法实现了驱动电压调整的智能化， 减少了调试的工作量， 提高工作效率， 避免了人为因素所造成的千扰。
较佳的， 所述方法还包括： 根据所述调整后的驱动电压， 确定所述调整 后的驱动电压所对应的分压电阻阻值。 根据这些分压电阻阻值之间的比例， 可以得到显示模组驱动电路设 中， 要得到该调整后的驱动电压所需要的最 佳电阻阻值。
较佳的， 所述方法还包括： 确定显示模组中用于确定测试驱动电压的待 测驱动电压和标准灰阶的关系曲线， 得到驱动电路的可调灰阶对应的测试驱 动电压； 向显示模组提供所述驱动电路的可调灰阶对应的测试驱动电压。 每 一所述可调灰阶的测试驱动电压，都处于该可调灰阶在满足目标 Gamma值时 的电压范围内， 使得显示模组能够正常工作。
较佳的， 确定显示模组中待测驱动电压和标准灰阶的关系曲线， 具体包 括： 采集不同驱动电压下多个显示模组中的画面所对应的亮度数据， 确定多 组待测驱动电压和透过率的关系曲线； 根据标准灰阶与透过率的关系， 获取 标准灰阶与透过率的标准关系曲线； 将每一所述待测驱动电压和透过率的关 系曲线与所述标准灰阶与透过率的标准关系曲线进行拟合， 得到多组待测驱 动电压和标准灰阶的关系曲线。 从所述确定的显示模组中待測驱动电压和标 准灰阶的关系曲线中，能够获取每个标准灰阶在满足目标 Gamma值时所需要 的测试驱动电压的电压范围。
较佳的， 所述得到驱动电路的可调灰阶对应的測试驱动电压， 具体包括： 根据所述多组待测驱动电压和标准灰阶的关系曲线， 获取多组每一可调灰阶 满足目标 Gamma值时的测试驱动电压的电压范围；根据所述多组每一可调灰 阶的测试驱动电压的电压范围， 得到同时满足所述多个显示模组的可调灰阶 的测试驱动电压。 通过该步骤得到的测试驱动电压， 能够满足上述多个显示 模组正常工作的需要。
所述标准灰阶与透过率的标准关系曲线满足：
T::::(L/M)G
其中， G为目标伽马值， T为透射率， L为标准灰阶， M为标准灰阶 L的最 大值。 所述标准灰阶与透过率的标准关系曲线， ^于作为可调灰阶与透过率 的实际关系曲线的目标曲线。
本发明实施例提供了一种显示模组的驱动电压的调整装置， 所述装置包 括：
采集模块， 用于采集显示模组中驱动电路在测试驱动电压的作用下的可 调灰阶所对应的亮度数据， 并将采集到的亮度数据发送至运算处理模块； 运算处理模块， ^于接收所述采集模块发送的所述亮度数据， 并根据所 述亮度数据确定可调灰阶与透过率的实际关系曲线； 以及用于将所述可调灰 阶与透过率的实际关系曲线和标准灰阶与透过率的标准关系曲线进行比较， 确定可调灰阶与透过率的实际关系曲线和标准灰阶与透过率的标准关系曲线 之间的透过率的差异， 并将包含所述透过率的差异的比较结果发送给调整模 块；
调整模块， 用于接收所述比较结果， 根据所述透过率的差异对测试驱动 电压迸行调整， 使得所述实际关系曲线与标准关系曲线之间的透过率的差异 满足设定要求， 并确定显示模组调整后的驱动电压。
较佳的， 所述调整模块， 还用于根据所述调整后的驱动电压， 确定该调 整后的驱动电压所对应的分压电阻阻值。根据这些分压电阻阻值之间的比例， 可以得到显示模组驱动电路设计中， 要得到该调整后的驱动电压所需要的最 佳电阻阻值。
较佳的， 所述运算处理模块， 还用于确定显示模组中用于确定測试驱动 电压的待测驱动电压和标准灰阶的关系曲线， 得到驱动电路的可调灰阶对应 的测试驱动电压； 并用于向显示模组提供所述驱动电路的可调灰阶对应的測 试驱动电压。
较佳的， 所述确定测试驱动电压和标准灰阶的关系曲线， 具体包括： 采 集不同待测驱动电压下多个显示模组中的画面所对应的亮度数据， 确定多组 待测驱动电压和透过率的关系曲线； 根据标准灰阶与透过率的关系， 获取标 准灰阶与透过率的标准关系曲线； 将每一所述待测驱动电压和透过率的关系 曲线与所述标准灰阶与透过率的标准曲线进行拟合， 得到多组待测驱动电压 和标准灰阶的关系曲线。 从所述确定的显示模组中待测驱动电压和标准灰阶 的关系曲线中，能够获取每个标准灰阶在满足目标 Gamma值时所需要的测试 驱动电压的电压范围。
较佳的， 所述得到驱动电路的可调灰阶对应的测试驱动电压， 具体包括： 根据所述多组待测驱动电压和标准灰阶的关系曲线， 获取多组每一可调灰阶 满足目标 Gamma值时的测试驱动电压的电压范围；根据所述多组每一可调灰 阶的测试驱动电压的电压范围， 得到同时满足所述多个显示模组的可调灰阶 的测试驱动电压。 所述测试驱动电压能够满足上述多个显示模组正常工作的 需要。
所述标准灰阶与透过率的标准关系曲线满足：
T-(L/M)G
其中， G为目标伽马值， T为透射率， L为标准灰阶， M为标准灰阶 L 的最大值。 所述标准灰阶与透过率的标准关系曲线， 用于作为可调灰阶与透 过率的实际关系曲线的目标曲线。
本发明实施例提供了一种显示装置， 所述显示装置包括如上所述的显示 模组的驱动电压的调整装置。 在对所述显示装置的显示模组的驱动电压进行 调整时， 实现了驱动电压调整的智能化， 因此减少了调试的工作量， 提高工 作效率， 避免了人为因素所造成的干扰。 此外， 由于减少了调试的工作量， 也就相应地减少了人工成本和时间成本， 从而降低了显示装置的制造成本。
图 1 为本发明实施例提供的显示模组中驱动电压的调整方法的流程示意 图；
图 2为显示模组中驱动电压和透过率的关系曲线示意图；
图 3为标准灰阶和透过率的标准关系曲线示意图；
图 4为获取显示模组的驱动电压的方法示意图；
图 5为本发明实施例提供的显示模组的驱动电压的调整装置的结构示意 图。 具体实施方式
本发明实施例提供了一种显示模组的驱动电压的调整方法和调整装置， 用以提高驱动电压的调整精确度， 并能够减少调试的工作量， 提高工作效率。
下面将结合本发明实施例中的附图， 对本发明实施例中的技术方案进行 清楚、 完整地描述， 显然， 所描述的实施例仅仅是本发明一部分实施例， 而 不是全部的实施例。 基于本发明中的实施例， 本领域普通技术人员在没有做 出创造性劳动前提下所获得的所有其他实施例， 都属于本发明保护的范围。
本发明实施例一提供了一种显示模组的驱动电压的调整方法， 所述方法 包括：
采集显示模组中驱动电路在测试驱动电压的作用下的可调灰阶所对应的 亮度数据， 并根据所述亮度数据确定可调灰阶与透过率的实际关系曲线； 将所述可调灰阶与透过率的实际关系曲线和标准灰阶与透过率的标准关 系曲线进行比较， 确定可调灰阶与透过率的实际关系曲线和标准灰阶与透过 率的标准关系曲线之间的透过率的差异；
根据所述透过率的差异对驱动电路的驱动电压进行调整， 使得所述实际 关系曲线与标准关系曲线之间的透过率的差异满足设定要求， 并确定显示模 组的调整后的驱动电压。 参见图 1 , 在实施的过程中， 所述调整方法具体包括：
步骤 101， 参见图 2， 通过测量仪器对分别向多个显示模组提供一系列的 待测驱动电压， 并采集每一所述显示模组在不同待测驱动电压下的画面的亮 度数据， 根据所述亮度数据， 得到每一显示模组的待測驱动电压和透过率的 关系曲线， 即 V—T曲线， 其中， V表示驱动电压， T表示透过率； 所述向显 示模组提供的一系列的驱动电压中， 最小值为 0v， 然后以 OJv的幅度逐步增 大， 直至所述显示模组的透过率达到！ 00%。
从图 2中可以看出， 所述显示模组的透过率在一定范围内， 随着待测驱 动电压的逐步增大而增大。
需指出的是， 所述显示模组可以为液晶显示模组， 还可以为有机发光二 极管 OLED、 等离子 PDP、 或阴极射线 CRT等其它的显示模组。
歩骤 102, 参见图 3 , 根据标准灰阶与透过率之间的关系， 得到标准灰阶 L与透过率的标准关系曲线， 即 L—T标准曲线； 其中， L表示标准灰阶， 其 取值范围为 0-255。 图 3中的 2.0、 2.2、 2,4表示目标 Gamma值。 从图 3中可 以看出， 同一标准灰阶所对应的透过率随着目标 Gamma值的逐渐增大而减 小
所述标准灰阶与透过率的标准关系曲线满足：
T::::(L/M)G
其中， G为目标伽马值， T为透射率， L为标准灰阶， M为标准灰阶 L 的最大值。
步骤 103， 根据步骤 101 中获取的每一显示模组的待测驱动电压和透过 率的关系曲线和步骤 102中得到的标准灰阶 L与透过率的标准关系曲线， 拟 合出每一显示模组的待测驱动电压和标准灰阶的关系曲线， 即 V—L曲线； 根据上述每一显示模组的 V—L 曲线， 得到该显示模组中每一可调灰阶 的测试驱动电压的取值范围； 所述标准灰阶， 代表了由最暗到最亮之间不同 亮度的层次级别， 中间层级越多， 所能够呈现的画面效果也就越细腻。 由于 最小标准灰阶值为 0, 而最大标准灰阶值为 255 , 因此我们将从最小标准灰阶 值到最大标准灰阶值称为 256个标准灰阶。 而对于一个显示模组来说， 其驱 动电路中并不能取到全部的标准灰阶， 只能取到其中的一部分， 我们将所述 能够取到的部分标准灰阶称为可调灰阶， 例如， 该显示模组中的驱动电路只 能取到 0、 4、 8、 16-, 52、 76、 100、 131、 152、 176、 2.03、 225、 239、 247、 251、 255等部分标准灰阶， 因此我们将取到部分标准灰阶 0、 4、 8、 16、 52、 76、 100、 131、 ！52、 176、 203、 225、 239、 247、 251、 255称为该显示模组. 的可调灰阶。然后根据每一标准灰阶所对应的透过率随着目标 Gamma值的增 大而逐渐减小的规律， 以及透光率在一定范围内随着待测驱动电压的逐步增 大而增大的规律， 即可得到每一可调灰阶在满足目标 Gamma 值 （以目标 Gamma值取值 2,2， 其误差为 ±0.2为例） 时的电压范围， 例如可调灰阶 76满 足的电压范围为 [V762.4, V762.o
对于所述多个显示模组来说，可以得到多组与可调灰阶 76相对应的测试 驱动电压的电压范围， 具体的： 第一个显示模组中可调灰阶 76相对应的电压 范围为： SUU U2] , 第二个显示模组中可调灰阶 76相对应的电压范围为： S2[U3, U4],…，第 n个显示模组中可调灰阶 76相对应的电压范围为： Sn[U2n4 , U2J。 对所述多组与可调灰阶 76相对应的电压范围求交集。 如图 4所示， 对 S S2〜〜Sii求交集， 得到了一组能够同时满足所述多个显示模组的电压范 围 S , 并从所述电压范围 S中取一中间值， 作为所述多个显示模组中可调灰 阶 76的测试驱动电压；
根据上述步骤， 同样可以获取其它可调灰阶所对应的测试驱动电压。 步骤 104， 通过电压调节器输出驱动电路中的每一可调灰阶对应的测试 驱动电压， 然后通过亮度测试仪采集显示模组在该测试驱动电压下的画面的 亮度数据， 并根据所述亮度数据确定可调灰阶与透过率的实际关系曲线。
歩骤 105 , 将所述可调灰阶与透过率的实际关系曲线和所述标准灰阶与 透过率的标准关系曲线进行比较， 确定可调灰阶与透过率的实际关系曲线和 标准灰阶与透过率的标准关系曲线之间的透过率的差异。
步骤 106， 根据所述透过率的差异以及预先设定的电压调节方法控制电 压调节器对输出的测试驱动电压进行调整， 然后重复进行可调灰阶与透过率 的实际关系曲线的采集及比对， 直至可调灰阶与透过率的实际关系曲线和标 准灰阶与透过率的标准关系曲线之间的透过率的差异满足设定要求， 例如， 所述可调灰阶与透过率的实际关系曲线和标准灰阶与透过率的标准关系曲线 步骤 107， 在完成步骤 106后， 获取显示模组的调整后的驱动电压； 或 / 和， 通过电压调节器内部电阻分压原理， 计算出所述调整后的驱动电压所对 应的分压电阻阻值， 通过这些阻值比例可以得到显示模组驱动电路设计所需 要的最佳电阻值。
需指出的是， 本发明实施例提供的方法中， 可以不通过所述步骤 101、 所述步骤 102和所述步骤 103来获取所述多个显示模组中可调灰阶的测试驱 动电压， 开发者可以根据其产品设计经验为所述多个显示模组提供一组测试 驱动电压， 然后通过后续步骤实现显示模组的驱动电压的调整。
本发明实施例二提供了一种显示模组的驱动电压的调整装置， 其结构如 图 5所示， 从图 5中可以看出， 所述显示模组的驱动电压的调整装置包括： 采集模块 501、 运算处理模块 502和调整模块 503 , 具体的：
所述采集模块 501 , 用于采集显示模组中驱动电路在测试驱动电压的作 ^下的可调灰阶所对应的亮度数据， 并将采集到的亮度数据发送至运算处理 模块 502；
所述运算处理模块 502, ^于接收采集模块 501发送的亮度数据， 并根 据所述亮度数据确定可调灰阶与透过率的实际关系曲线； 以及将所述可调灰 阶与透过率的实际关系曲线和标准灰阶与透过率的标准关系曲线进行比较， 确定可调灰阶与透过率的实际关系曲线和标准灰阶与透过率的标准关系曲线 之间的透过率的差异， 并将包含所述透过率的差异的比较结果发送给调整模 块 503 ; 所述标准灰阶与透过率的标准关系曲线满足：
T::::(L/M)G
其中， G为目标伽马值， T为透射率， L为标准灰阶， M为标准灰阶 L 的最大值。
调整模块 503， 用于接收所述比较结果， 并根据所述结果中的透过率的 差异对测试驱动电压进行调整， 使得所述实际关系曲线与标准关系曲线之间 的透过率的差异满足设定要求， 并确定显示模组调整后的驱动电压。
所述调整模块 503 , 还用于确定所述调整后的驱动电压所对应的分压电 阻阻值。 其中， 所述采集模块 501、 所述运算处理模块 502和调整模块 503 , 还用 于确定显示模组的测试驱动电压的过程， 具体的：
所述采集模块 501， 在通过测量仪器对分别向多个显示模组提供一系列 的待测驱动电压时， 采集每一所述显示模组在不同待測驱动电压下的画面的 亮度数据， 并发送给所述运算处理模块 502。 所述向显示模组提供的一系列 的待测驱动电压中， 最小值为 0v， 然后以 O. l v的幅度逐步增大， 直至使得所 述显示模组的透过率达到 100%。
所述运算处理模块 502， 根据所述亮度数据， 确定每一显示模组中待測 驱动电压和透过率的关系曲线， 如图 2所示； 将所述待测驱动电压和透过率 的关系曲线与标准灰阶与透过率的标准曲线进行拟合， 得到每一显示模组中 待测驱动电压和标准灰阶的关系曲线， 如图 3所示； 从图 2中可以看出， 显 示模组的透光率在一定范围内， 随着待测驱动电压的逐步增大而增大； 从图 3中可以看出， 同一可调灰阶所对应的透过率随着目标 Gamma值的逐渐增大 ¾i小。
根据上述每一显示模组的 v—L 曲线， 得到该显示模组中每一可调灰阶 的测试驱动电压的电压范围； 例如， 对于显示模组来说， 该显示模组的可调 灰阶分别为 0、 4、 8、 16、 52、 76、 100、 131、 152、 176、 203、 22.5、 239、 247、 251、 255 , 根据透过率随着目标 Gamma值的增大而逐渐减小的规律， 以及透光率在一定范围内随着驱动电压的逐步增大而增大的规律， 即可得到 每一可调灰阶在满足目标 Gamma值（以目标 Gamma值取值 2.2，其误差为 ±0.2 为例） 时的电压范围， 例如可调灰阶 76满足的电压范围为 [V762.4， V762.o];
对于所述多个显示模组来说，可以得到多组与可调灰阶 76相对应的电压 范围，所述调整模块 503对所述多组与可调灰阶 76相对应的电压范围求交集， 得到一组能够同时满足所述多个显示模组的电压范围， 并从所述能够同时满 足所述多个显示模组的电压范围中取一中间值， 作为所述多个显示模组中可 调灰阶 76的测试驱动电压； 同理， 可以获取其它可调灰阶所对应的测试驱动 电压；
所述运算处理模组 502 , 还用于向显示模组提供驱动电路的每一可调灰 阶对应的测试驱动电压。 本发明实施例三提供了一种显示装置， 所述显示装置包括实施二中所记 载的显示模组的驱动电压的调整装置。 该显示装置可以是显示器、 手机、 电 视、 笔记本、 一体机等。 除上述显示模组的驱动电压的调整装置之外， 对于 本实施例三的所述显示装置的其它必不可少的组成部分均为本领域的普通技 术人员应该理解具有的， 因此在次不再赘述， 也不应作为对本发明的限制。
综上， 本发明实施例提供的显示模组的驱动电压的调整方法中， 将测试 驱动电压与透过率的实际关系曲线与标准灰阶与透过率的标准关系曲线进行 比较， 作为调整驱动电压的方法， 可以更精确有效的对调试过程中的测试驱 动电压进行调整； 并且， 该方法将驱动电压与透过率的实际关系曲线与标准 灰阶与透过率的标准关系曲线相结合， 用于确定显示模组中可调灰阶在满足 目标 Gamma值时的测试驱动电压； 此外，所述调解过程可利用预先设置的程 序来完成， 实现了调整过程的智能化， 减少了调试的工作量， 提高工作效率， 同时还减少了人工因素的干扰。
显然， 本领域的技术人员可以对本发明进行各种改动和变型而不脱离本 发明的精神和范围。 这样， 倘若本发明的这些修改和变型属于本发明权利要 求及其等同技术的范围之内， 则本发明也意图包含这些改动和变型在内。

Claims

利 要 求 书
1、 一种显示模组的驱动电压的调整方法， 其特征在于， 所述方法包括： 采集显示模组中驱动电路在测试驱动电压的作用下的可调灰阶所对应的 亮度数据， 并根据所述亮度数据确定可调灰阶与透过率的实际关系曲线； 将所述可调灰阶与透过率的实际关系曲线和标准灰阶与透过率的标准关 系曲线进行比较， 确定可调灰阶与透过率的实际关系曲线和标准灰阶与透过 率的标准关系曲线之间的透过率的差异；
根据所述透过率的差异对驱动电路的测试驱动电压进行调整， 使得所述 实际关系曲线与标准关系曲线之间的透过率的差异满足设定要求， 并确定显 示模组的调整后的驱动电压。
2、 如权利要求 1所述方法， 其特征在于， 所述方法还包括： 根据所述调 整后的驱动电压， 确定所述调整后的驱动电压所对应的分压电阻阻值。
3、 如权利要求 1所述方法， 其特征在于， 所述方法还包括：
确定显示模组中用于确定测试驱动电压的待测驱动电压和标准灰阶的关 系曲线， 得到驱动电路的可调灰阶对应的测试驱动电压；
向显示模组提供所述驱动电路的可调灰阶对应的测试驱动电压。
4、 如权利要求 3所述方法， 其特征在于， 确定显示模组中待测驱动电压 和标准灰阶的关系曲线， 具体包括：
采集不同待测驱动电压下多个显示模组中的画面所对应的亮度数据， 确 定多组待测驱动电压和透过率的关系曲线；
根据标准灰阶与透过率的关系，获取标准灰阶与透过率的标准关系曲线； 将每一所述待测驱动电压和透过率的关系曲线与所述标准灰阶与透过率 的标准关系曲线进行拟合， 得到多组待测驱动电压和标准灰阶的关系曲线。
5、 如权利要求 3所述方法， 其特征在于， 所述得到驱动电路的可调灰阶 对应的测试驱动电压， 具体包括：
根据所述多组待测驱动电压和标准灰阶的关系曲线， 获取多组每一可调 灰阶满足目标伽马值 ^的测试驱动电压的电压范围；
根据所述多组每一可调灰阶的测试驱动电压的电压范围， 得到同时满足 所述多个显示模组的可调灰阶的测试驱动电压。
6、 如权利要求 4所述方法， 其特征在于， 所述标准灰阶与透过率的标准 关系曲线满足：
T:(L/M)G
其中， G为目标伽马值， T为透射率， L为标准灰阶， M为标准灰阶 L的最 大值。
7、 一种显示模组的驱动电压的调整装置， 其特征在于， 所述装置包括： 采集模块， 用于采集显示模组中驱动电路在测试驱动电压的作用下的可 调灰阶所对应的亮度数据， 并将采集到的亮度数据发送至运算处理模块； 运算处理模块， 用于接收所述采集模块发送的所述亮度数据， 并根据所 述亮度数据确定可调灰阶与透过率的实际关系曲线； 以及用于将所述可调灰 阶与透过率的实际关系曲线和标准灰阶与透过率的标准关系曲线进行比较， 确定可调灰阶与透过率的实际关系曲线和标准灰阶与透过率的标准关系曲线 之间的透过率的差异， 并将包含所述透过率的差异的比较结果发送给调整模 块；
调整模块， 用于接收所述比较结果， 根据所述透过率的差异对测试驱动 电压迸行调整， 使得所述实际关系曲线与标准关系曲线之间的透过率的差异 满足设定要求， 并确定显示模组调整后的驱动电压。
8、 如权利要求 7所述装置， 其特征在于， 所述调整模块， 还 ^于根据所 述调整后的驱动电压， 确定该调整后的驱动电压所对应的分压电阻阻值。
9、 如权利要求 7所述装置， 其特征在于， 所述运算处理模块， 还用于确 定显示模组中用于确定测试驱动电压的待测驱动电压和标准灰阶的关系曲 线， 得到驱动电路的可调灰阶对应的测试驱动电压； 并用于向显示模组提供 所述驱动电路的可调灰阶对应的测试驱动电压。
10、 如权利要求 9所述装置， 其特征在于， 确定待测驱动电压和标准灰 阶的关系曲线的步骤， 具体包括：
采集不同待测驱动电压下多个显示模组中的画面所对应的亮度数据， 确 定多组待测驱动电压和透过率的关系曲线；
根据标准灰阶与透过率的关系，获取标准灰阶与透过率的标准关系曲线； 将每一所述待测驱动电压和透过率的关系曲线与所述标准灰阶与透过率 的标准曲线进行拟合， 得到多组待测驱动电压和标准灰阶的关系曲线。
11、 如权利要求 9所述装置， 其特征在于， 所述得到驱动电路的可调灰 阶对应的测试驱动电压， 具体包括：
根据所述多组待测驱动电压和标准灰阶的关系曲线， 获取多组每一可调 灰阶满足目标伽马值日寸的测试驱动电压的电压范围；
根据所述多组每一可调灰阶的测试驱动电压的电压范围， 得到同时满足 所述多个显示模组的可调灰阶的测试驱动电压。
12、 如权利要求 10所述装置， 其特征在于， 所述标准灰阶与透过率的目
T-(L/M)G
其中， G为目标伽马值， T为透射率， L为标准灰阶， M为标准灰阶 L 的最大值。
13、 一种显示装置， 其特征在于， 所述显示装置包括如权利要求 7 12所 述的显示模组的驱动电压的调整装置。
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