WO2020082525A1 - 显示面板检测方法、装置及显示装置 - Google Patents

显示面板检测方法、装置及显示装置 Download PDF

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Publication number
WO2020082525A1
WO2020082525A1 PCT/CN2018/120188 CN2018120188W WO2020082525A1 WO 2020082525 A1 WO2020082525 A1 WO 2020082525A1 CN 2018120188 W CN2018120188 W CN 2018120188W WO 2020082525 A1 WO2020082525 A1 WO 2020082525A1
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voltage
display panel
data
feed
preset
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French (fr)
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李嘉航
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HKC Co Ltd
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HKC Co Ltd
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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
    • G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays

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  • the present application relates to the field of display technology, in particular to a display panel detection method, device and display device.
  • the traditional display panel detection method needs to measure the size of the parasitic capacitance through third-party simulation software, so as to obtain the size of the feeding voltage through calculation.
  • the third-party simulation software will cause the simulation results and actual distortion, making the measurement results inaccurate. As a result, the reliability of measurement results of traditional display panel inspection methods is poor.
  • a display panel detection method, device, and display device are provided.
  • a display panel detection method includes:
  • the feed-in voltage is obtained according to the target common-pole voltage, the preset gray-scale voltage, and the preset feed voltage calculation formula, and the preset feed voltage calculation formula characterizes that the feed voltage and the target share Correspondence between the pole voltage and the preset gray scale voltage;
  • a display panel detection device includes a memory and a processor.
  • the memory stores computer-readable instructions.
  • the processor causes the processor to perform the following steps:
  • the feed-in voltage is obtained according to the target common-pole voltage, the preset gray-scale voltage, and the preset feed voltage calculation formula, and the preset feed voltage calculation formula characterizes that the feed voltage and the target share Correspondence between the pole voltage and the preset gray scale voltage;
  • a display device includes a display panel, a memory, and a processor.
  • the memory stores computer-readable instructions.
  • the processor causes the processor to perform the following steps:
  • the feed-in voltage is obtained according to the target common-pole voltage, the preset gray-scale voltage, and the preset feed voltage calculation formula, and the preset feed voltage calculation formula characterizes that the feed voltage and the target share Correspondence between the pole voltage and the preset gray scale voltage;
  • FIG. 1 is a schematic flowchart of a display panel detection method in an embodiment
  • FIG. 2 is a schematic diagram of a target common pole voltage acquisition process in an embodiment
  • FIG. 3 is a diagram of the correspondence between the gray scale of the binding point and the voltage in an embodiment
  • FIG. 4 is a schematic diagram of the influence of the feed-in voltage on the common pole voltage in an embodiment
  • FIG. 5 is a schematic flow chart of obtaining a flicker value by a comparison method in an embodiment
  • FIG. 6 is a graph of the relationship between brightness and time obtained by the comparison method in an embodiment
  • FIG. 7 is a schematic diagram of a process of obtaining flicker value by the JEITA method in an embodiment
  • FIG. 8 is a diagram of the correspondence between amplitude and frequency obtained by the JEITA method in an embodiment
  • FIG. 9 is a schematic structural view of a display panel detection device in an embodiment
  • FIG. 10 is a schematic structural view of a display device in an embodiment
  • FIG. 11 is a schematic structural diagram of a display device in another embodiment.
  • a display panel detection method including: obtaining the screen data of the display panel, and obtaining the target common pole voltage of the display panel according to the screen data; according to the target common pole voltage, the preset gray scale voltage and the preset
  • the feed-in voltage calculation formula obtains the feed-in voltage; according to the feed-in voltage, the feed-in effect detection result of the display panel is obtained.
  • gray scale refers to dividing the brightness change between the brightest and the darkest into several parts, indicating the level of different brightness from the darkest to the brightest, so as to facilitate the control of the screen brightness corresponding to the signal input .
  • Gray scale Take 8bit panel as an example, with 256 brightness levels, respectively 0-255, we call it 256 gray levels.
  • each pixel is composed of three sub-pixels of red, green, and blue with different brightness levels to form different color points.
  • Blinking refers to the situation where the brightness of the positive pixel voltage and the negative pixel voltage are not symmetrical, resulting in inconsistent brightness.
  • the feed-in voltage is the voltage shift when the gate voltage is switched from the on-state high level to the off-state low level, due to the presence of parasitic capacitance, which eventually causes the data line voltage applied to the pixel to deviate from the initial voltage the amount.
  • the gate scanning voltage turns on the TFT at a high potential.
  • the TFT is turned off when the potential is low, and a closed circuit is formed in the pixel while turning off the TFT.
  • the TFT is instantly pulled from a low potential (generally -7V) to a high potential (generally -30V).
  • the TFT is instantly lowered from the high potential to the low potential. Therefore, the parasitic capacitance formed between the gate and the source of the TFT will have a greater influence on the pixel voltage, and at this time, the feed-in voltage will be generated.
  • the common electrode voltage (that is, the common electrode voltage of the liquid crystal display panel, VC0M) can only be set to a fixed value.
  • the target common pole voltage refers to the voltage of the common electrode of the display panel when the flicker of the display panel is at a minimum. Only under the condition of the target common pole voltage can the minimum amplitude of flicker or afterimage of the display panel be ensured, and a better display screen can be obtained.
  • the gray scale scintillation screen image data can be collected by the scintillation measurement probe or the brightness meter. When the feed effect detection of the display panel is performed, the gray scale scintillation screen of the display panel is directly received by the scintillation measurement probe or the brightness meter The picture data collected and sent can be analyzed accordingly.
  • the preset feed voltage calculation formula represents the correspondence between the feed voltage and the target common pole voltage, and the preset gray scale voltage.
  • the preset gray scale voltage refers to the voltage applied under the gray scale of the binding point corresponding to the gray scale screen.
  • the gray scale voltage of each display panel is constant, and under different manufacturing process conditions, there may be differences.
  • FIG. 3 is the voltage value corresponding to the gray level of the binding point of the gray scale screen in one embodiment.
  • the gray level of the binding point includes the gray level of the positive binding point and the gray level of the negative binding point.
  • the gray scale voltage value also includes positive gray scale voltage and negative gray scale voltage.
  • the positive gray scale voltage refers to the corresponding driving voltage value under the positive gray scale
  • the negative gray scale voltage refers to the corresponding driving voltage value under the negative gray scale.
  • the offset of the display panel means that the voltage level of the pixel electrode is shifted by the influence of parasitic capacitance or storage capacitance on the TFT substrate, and the parasitic capacitance or storage capacitance on the TFT substrate directly affects the magnitude of the feed voltage, so ,
  • the degree of deviation of the display panel can be evaluated according to the magnitude of the feeding voltage (ie, the obtained detection result of the feeding effect of the display panel). It can be understood that the larger the value of the feed voltage, the greater the influence of the voltage level of the pixel electrode on the parasitic capacitance or storage capacitance on the TFT substrate, that is, the greater the degree of deviation of the display panel.
  • the above method can be used to calculate the feeding voltage.
  • the target common pole voltage is determined according to the flicker value of the grayscale scintillation picture under the grayscale, and then It is calculated according to the preset gray scale voltage and the preset feed voltage calculation formula and the target common pole voltage.
  • FIG. 2 to obtain the screen data of the display panel and obtain the target common pole voltage of the display panel according to the screen data includes: adjusting the common pole voltage of the display panel to obtain the display panel under different common pole voltages
  • the screen data collected when the grayscale flashing screen flashes; according to the screen data, the flashing value under different common polar voltages is obtained, and the common polar voltage corresponding to the minimum flashing value is taken as the target common polar voltage.
  • the common pole voltage when the common pole voltage is changed, the grayscale screen will have different degrees of flickering. According to the different grayscale screens, the corresponding screen data is obtained.
  • a common pole voltage of a certain size can be used every interval.
  • the common pole voltage can be adjusted once at a voltage of 0.01V every interval, and then record each In the case of a common pole voltage, the picture data corresponding to the grayscale picture.
  • the voltage values of other sizes may be spaced, a common pole voltage adjustment may be performed once, and then picture data corresponding to each common pole voltage may be recorded.
  • the corresponding picture data is obtained, so as to facilitate the comparative analysis of the obtained picture data and obtain the flicker value corresponding to the picture data.
  • the color analyzer when the common pole voltage is adjusted, can be aligned to the center of the display panel, the display panel displays the corresponding grayscale flashing picture, and the color analyzer to the corresponding common pole voltage in the Gamma IC
  • the register sends corresponding adjustment commands, and the common-polarity voltage register outputs different common-polarity voltages to make the gray-scale flashing screen of the display panel flicker, and then obtains the blinking value corresponding to each common-polarity voltage to analyze the target common-polarity voltage.
  • the target common pole voltage means that under this common pole voltage, the gray scale flashing picture has the lowest flickering degree, that is, the smallest flickering value.
  • the common pole voltage is adjusted, the blink value of the blinking screen under the common pole voltage is obtained, and the obtained blink values are compared and analyzed to obtain the minimum blink value, and then the common pole voltage corresponding to the blink value is found, which is the target Common pole voltage.
  • the common pole voltage corresponding to the minimum flicker value is the same as the previous common pole voltage between the common pole voltage corresponding to the voltage and the minimum flicker value and the latter common pole voltage.
  • the flicker value is measured again at a smaller voltage interval to ensure the accuracy of the target common pole voltage; for example, a common voltage interval of 0.1V
  • the common pole voltage is 3V when the minimum flicker value is obtained.
  • the voltage interval is 0.01V, again Perform flicker value measurement.
  • the flicker value is measured by adjusting the common pole voltage to obtain the target common pole voltage, so as to facilitate the calculation and analysis of the feed-in voltage according to the common pole voltage in the subsequent steps.
  • the preset gray-scale voltage includes a positive gray-scale voltage and a negative gray-scale voltage.
  • the feed-in voltage is obtained as : Where ⁇ V p is the feed-in voltage, V d + is the positive gray-scale voltage, V d- is the negative gray-scale voltage, and V ′ com is the target common-pole voltage.
  • the common pole voltage can be represented by the center of the positive and negative gray-scale voltage, that is However, the generation of the feed-in voltage will cause an AC component on the liquid crystal of the display panel.
  • the ideal target common-pole voltage is: Therefore, we can ensure that when the common pole voltage is in the ideal and optimal state, the feed-in voltage can be based on: Calculation.
  • the screen data is the brightness composition data
  • obtaining the flicker value under different common-pole voltages according to the screen data includes: obtaining AC data and DC data of the grayscale flashing screen; according to the AC data and DC data To get the corresponding blink value.
  • the AC data refers to the data of the brightness part generated by the AC voltage at a certain brightness of the display panel
  • the DC data refers to the data of the brightness part generated by the DC voltage at the same brightness, which is specifically expressed as The AC voltage and the DC voltage provided when the display panel reaches the corresponding brightness.
  • FIG. 6 The relationship curve with time shows. It can be obtained according to the change relationship of the brightness of the grayscale flashing picture within a certain period of time. Under the common pole voltage, the size of the AC data and the size of the DC data.
  • the flash appears on the display panel is called flicker.
  • the flicker in the liquid crystal display panel usually occurs periodically, which will cause greater damage to the human eye.
  • the voltage (which can also be brightness) of the grayscale blinking picture the larger the amplitude, the more obvious the blinking.
  • the obtained gray-scale picture brightness change relationship with time it includes both the brightness change caused by AC data and the brightness change caused by DC data. According to the analysis and calculation of AC data and DC data, the corresponding The flicker value under the condition of common pole voltage.
  • the corresponding flicker value is obtained as: Among them, S is the flicker value, A is AC data, and D is DC data.
  • the ratio of AC data to DC data is the flicker value.
  • the AC data is V max -V min and the DC data is Among them, V max is the maximum voltage, V min is the minimum voltage. Since the brightness of the screen is proportional to the voltage, different voltages are used to represent different brightness directly, so V max also represents the maximum brightness, and V min represents the minimum brightness.
  • the flicker value is calculated, where S is the flicker value, V max is the maximum voltage, and V min is the minimum voltage.
  • the comparison method (that is, calculation based on AC data and DC data) is used to obtain the flicker value of the grayscale flicker screen under each common pole voltage, so that in the subsequent steps, the target common pole voltage can be analyzed and judged according to the flicker value, and it has simple operation The advantages.
  • the picture data is frequency composition data, and obtaining the flicker value under different common-pole voltages according to the picture data includes: obtaining the first frequency data and the second frequency data of the gray scale flicker picture; One frequency data and the second frequency data, to obtain the corresponding flicker value.
  • JEITA method can accurately measure the flicker-related Amplitude and frequency, and then get the corresponding flicker value; JEITA method is a flicker value measurement method based on JEITA standard.
  • the first frequency data is the energy amplitude corresponding to the maximum frequency
  • the second frequency data is the energy amplitude corresponding to zero frequency (in the case of DC).
  • the first frequency data may also be the energy amplitude corresponding to the frequency closer to the maximum frequency
  • the second frequency data may also be closer to the zero frequency The energy amplitude corresponding to the frequency.
  • the corresponding amplitude value in each frequency composition that is, the corresponding relationship between frequency and amplitude value can be obtained.
  • the corresponding flicker value can be obtained by analyzing and calculating.
  • the situation of each frequency composition is also different.
  • the corresponding common pole voltage at the minimum flicker can be obtained.
  • the corresponding flicker value is obtained: Where S is the flicker value, P X is the first frequency data, and P O is the second frequency data.
  • FIG. 8 is a structural diagram of an energy relationship structure of frequency in an embodiment, in which the abscissa represents frequency and the ordinate represents amplitude.
  • the amplitude when the frequency is 0 is recorded as P O.
  • it also has two other frequency components, the amplitudes of which are P X1 and P X2 , of which the larger amplitude is P X1 , so the corresponding Flash value
  • the flicker value is measured by the JEITA method, which is not limited by the frequency range that can be observed by the human eye, and can accurately measure the amplitude and frequency related to flicker, and has the advantage of high measurement accuracy.
  • the above display panel detection method can obtain the target common pole voltage corresponding to the display panel according to the screen data of the display panel, and then obtain a correspondence according to the obtained target common pole voltage and the preset gray scale voltage and the preset feed voltage calculation formula The feed-in voltage of the display panel to obtain the feed-in effect detection result of the display panel.
  • the above display panel detection method does not need to measure the size of the parasitic capacitance through third-party simulation software, will not cause the results of deviation due to simulation distortion, and has the advantage of strong reliability of the measurement results.
  • a display panel detection device includes a memory and a processor.
  • the memory stores computer readable instructions.
  • the processor is caused to perform the following steps: obtain screen data of the display panel And obtain the target common pole voltage of the display panel according to the screen data; according to the target common pole voltage, the preset gray scale voltage and the preset feed voltage calculation formula, the feed voltage is obtained, and the preset feed voltage calculation formula is characterized Correspondence between the feed-in voltage and the target common-pole voltage and the preset gray-scale voltage; and the feed-in effect detection result of the display panel is obtained according to the feed-in voltage.
  • gray scale refers to dividing the brightness change between the brightest and the darkest into several parts, indicating the level of different brightness from the darkest to the brightest, so as to facilitate the control of the screen brightness corresponding to the signal input .
  • Gray scale Take 8bit panel as an example, with 256 brightness levels, respectively 0-255, we call it 256 gray levels.
  • each pixel is composed of three sub-pixels of red, green, and blue with different brightness levels to form different color points.
  • Blinking refers to the situation where the brightness of the positive pixel voltage and the negative pixel voltage are not symmetrical, resulting in inconsistent brightness.
  • the feed-in voltage is the voltage shift when the gate voltage is switched from the on-state high level to the off-state low level, due to the presence of parasitic capacitance, which eventually causes the data line voltage applied to the pixel to deviate from the initial voltage the amount.
  • the gate scanning voltage turns on the TFT at a high potential.
  • the TFT is turned off when the potential is low, and a closed circuit is formed in the pixel while turning off the TFT.
  • the TFT is instantly pulled from a low potential (generally -7V) to a high potential (generally -30V).
  • the TFT is instantly lowered from the high potential to the low potential. Therefore, the parasitic capacitance formed between the gate and the source of the TFT will have a greater influence on the pixel voltage, and at this time, the feed-in voltage will be generated.
  • the common electrode voltage (that is, the common electrode voltage of the liquid crystal display panel, VC0M) can only be set to a fixed value.
  • the target common pole voltage refers to the voltage of the common electrode of the display panel when the flicker of the display panel is at a minimum. Only under the condition of the target common pole voltage can the minimum amplitude of flicker or afterimage of the display panel be ensured, and a better display screen can be obtained.
  • the gray scale scintillation screen image data can be collected by the scintillation measurement probe or the brightness meter. When the feed effect detection of the display panel is performed, the gray scale scintillation screen of the display panel is directly received by the scintillation measurement probe or the brightness meter The picture data collected and sent can be analyzed accordingly.
  • the preset feed voltage calculation formula represents the correspondence between the feed voltage and the target common pole voltage, and the preset gray scale voltage.
  • the preset gray scale voltage refers to the voltage applied under the gray scale of the binding point corresponding to the gray scale screen.
  • the gray scale voltage of each display panel is constant, and under different manufacturing process conditions, there may be differences.
  • FIG. 3 is the voltage value corresponding to the gray level of the binding point of the gray scale screen in one embodiment.
  • the gray level of the binding point includes the gray level of the positive binding point and the gray level of the negative binding point.
  • the gray scale voltage value also includes positive gray scale voltage and negative gray scale voltage.
  • the positive gray scale voltage refers to the corresponding driving voltage value under the positive gray scale
  • the negative gray scale voltage refers to the corresponding driving voltage value under the negative gray scale.
  • the offset of the display panel means that the voltage level of the pixel electrode is shifted by the influence of parasitic capacitance or storage capacitance on the TFT substrate, and the parasitic capacitance or storage capacitance on the TFT substrate directly affects the magnitude of the feed voltage, so ,
  • the degree of deviation of the display panel can be evaluated according to the magnitude of the feeding voltage (ie, the obtained detection result of the feeding effect of the display panel). It can be understood that the larger the value of the feed voltage, the greater the influence of the voltage level of the pixel electrode on the parasitic capacitance or storage capacitance on the TFT substrate, that is, the greater the degree of deviation of the display panel.
  • the above method can be used to calculate the feeding voltage.
  • the target common pole voltage is determined according to the flicker value of the grayscale scintillation picture under the grayscale, and then It is calculated according to the preset gray scale voltage and the preset feed voltage calculation formula and the target common pole voltage.
  • obtaining the screen data of the display panel and obtaining the target common-pole voltage of the display panel according to the screen data includes: adjusting the common-pole voltage of the display panel, and obtaining a gray-scale blinking picture for the display panel under different common-pole voltage
  • obtaining the flicker value under different common-pole voltages according to the picture data includes: obtaining AC data and DC data of the gray-scale flicker picture; and obtaining the corresponding flicker value according to the AC data and the DC data.
  • the corresponding flicker value is obtained:
  • S is the flicker value
  • A is AC data
  • D is DC data.
  • obtaining the flicker value under different common-pole voltages according to the picture data includes: obtaining the first frequency data and the second frequency data of the grayscale flicker picture; according to the first frequency data and the second frequency data, obtaining the corresponding Flashing value.
  • the corresponding flicker value is obtained as:
  • the preset gray-scale voltage includes a positive gray-scale voltage and a negative gray-scale voltage. According to the target common-pole voltage, the preset gray-scale voltage, and the preset feed-in voltage calculation formula, the feed-in voltage is obtained as :
  • V d + is the positive gray-scale voltage
  • V d- is the negative gray-scale voltage
  • V ′ com is the target common-pole voltage
  • the above display panel detection device can obtain the target common pole voltage corresponding to the display panel according to the screen data of the display panel, and then obtain a correspondence according to the obtained target common pole voltage and the preset gray scale voltage and the preset feed voltage calculation formula The feed-in voltage of the display panel to obtain the feed-in effect detection result of the display panel.
  • the above display panel detection device does not need to measure the size of the parasitic capacitance through third-party simulation software, does not cause deviations in the results due to simulation distortion, and has the advantage of strong reliability of the measurement results.
  • a display device includes a display panel 20, a memory, and a processor.
  • the memory stores computer readable instructions.
  • the processor is caused to perform the following steps: obtain a screen of the display panel Data, and obtain the target common pole voltage of the display panel according to the screen data; according to the target common pole voltage, the preset gray scale voltage and the preset feed voltage calculation formula, the feed voltage is obtained, and the preset feed voltage calculation formula Characterize the corresponding relationship between the feeding voltage and the target common-pole voltage and the preset gray-scale voltage; and according to the feeding voltage, obtain the feeding effect detection result of the display panel.
  • the display panel 20 includes: an array substrate 21; a color filter substrate 22, the color filter substrate 22 is disposed opposite to the array substrate 21; and a liquid crystal layer 23, which is disposed on the array substrate 21 and Between the color filter substrates 22.
  • the array substrate 21 is a thin film transistor array substrate on which data lines arranged in a first direction and scan lines arranged in a second direction are provided, and pixels arranged in an array are defined at the intersection of the data lines and the scan lines After the scan signal and the data signal are provided to the pixel unit, the pixel unit emits light.
  • the color film substrate 22 has a glass substrate composed of a glass substrate, a black matrix, a color layer, a protective layer, and an ITO conductive film, and can accurately select light passing through a certain wavelength range and reflect light in other wavelength ranges.
  • the array substrate 21 and the color filter substrate 22 are oppositely arranged, and the image display can be performed under the driving of the light source and the corresponding driving signal.
  • the array substrate 21 includes a plurality of pixel units arranged in an array.
  • the array substrate 21 has a plurality of scan lines arranged in the first direction and a plurality of signal lines arranged in the second direction, the plurality of scan lines and the plurality of signal lines are insulated and intersected, and the plurality of scan lines and the plurality of The signal line insulation intersects to define a plurality of pixel units arranged in an array.
  • Each scan line is respectively connected to a corresponding array substrate row drive circuit to provide a scan drive signal for each pixel row. After each pixel unit provides a scan drive signal and a data drive signal through the scan line and the data line, the corresponding display function is completed.
  • the pixel unit includes a red (Red, R) color pixel unit, a green (Green, G) color pixel unit, a blue (Blue, B) color pixel unit, and a white (White, W) color pixel unit.
  • the pixel unit of the array substrate is set to four colors of RGBW, which is applied to the display device, and only the white pixel unit needs to be provided with a corresponding transparent area on the color filter, which can improve the light transmittance of the color filter and reduce the backlight Energy consumption of the module.
  • the specific arrangement of the RGBW four-color pixel units can be arranged according to actual usage. For example, in one embodiment, the pixel units in each pixel row are arranged in a RGBW four-color cycle. It can be understood that in other embodiments, the pixel unit includes a red pixel unit, a green pixel unit, and a blue pixel unit, and the pixel units may also be arranged in a cyclic manner of RGB three-color pixel units.
  • the display device further includes: a first polarizer 30 disposed on the side of the color film substrate 22 away from the liquid crystal layer 23; and a second polarizer 40 disposed on the side of the array substrate 21 away from the liquid crystal layer 23 .
  • the liquid crystal material is placed between two pieces of transparent conductive glass attached with a polarizer with a vertical optical axis, and liquid crystal molecules are distributed parallel to the transparent conductive glass when no voltage is applied, and two pieces of transparent conductive glass are respectively arranged
  • the liquid crystal molecules are sequentially arranged in accordance with the direction of the fine grooves of the alignment film. If no electric field is applied, light enters from the second polarizer 40, and the polarization direction is rotated 90 degrees according to the arrangement of the liquid crystal molecules. It is emitted from the first polarizer 30 and is in a bright state at this time.
  • the display device further includes a backlight module.
  • the backlight module provides the display panel with sufficient brightness and uniformly distributed light sources to enable it to display images normally.
  • the liquid crystal display is a passive light-emitting element, and does not emit light through the display panel itself.
  • the display panel displays images or characters as a result of modulating light.
  • the backlight module is an edge-lit backlight module.
  • the edge-lit backlight module means that the light source (Edge) is disposed on the side of the light guide plate, and the light guide plate illuminates the light evenly behind the liquid crystal panel.
  • the design of the edge-lit backlight module makes the display device have the advantages of light weight, thinness, narrow frame and low power consumption.
  • the backlight module may also be a direct type backlight module or a hollow type backlight module, as long as it can provide a corresponding light source for the display device.
  • a computer-readable storage medium is provided on which computer-readable instructions are stored.
  • the computer-readable instructions are executed by a processor, the following steps are implemented:
  • the screen data of the display panel and obtain the target common pole voltage of the display panel according to the screen data; according to the target common pole voltage, the preset gray scale voltage and the preset feed voltage calculation formula, the feed voltage is obtained, the preset The feed-in voltage calculation formula characterizes the corresponding relationship between the feed-in voltage, the target common-pole voltage, and the preset gray-scale voltage; according to the feed-in voltage, the detection effect of the feed-in effect of the display panel is obtained.
  • the corresponding common pole voltage is taken as the target common pole voltage.
  • Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory.
  • Volatile memory can include random access memory (RAM) or external cache memory.
  • RAM random access memory
  • DRAM dynamic RAM
  • SDRAM synchronous DRAM
  • DDRSDRAM double data rate SDRAM
  • ESDRAM enhanced SDRAM
  • SLDRAM synchronous chain (Synchlink) DRAM
  • RDRAM direct RAM
  • DRAM direct memory bus dynamic RAM
  • RDRAM memory bus dynamic RAM
  • the above display device and storage medium can obtain the target common pole voltage corresponding to the display panel according to the screen data of the display panel, and then obtain the calculated formula according to the obtained target common pole voltage, the preset gray scale voltage and the preset feed voltage Corresponding feed-in voltage, so as to obtain the feed-in effect detection result of the display panel.
  • the above display device and the storage medium do not need to measure the size of the parasitic capacitance through third-party simulation software, and there is no deviation due to simulation distortion, which has the advantage of strong reliability of the measurement result.

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Abstract

一种显示面板检测方法、装置和显示装置，包括：获取显示面板的画面数据，并根据画面数据得到显示面板的目标共极电压；根据目标共极电压、预设的灰阶电压和预设的馈入电压计算公式，得到馈入电压，预设的馈入电压计算公式表征馈入电压与目标共极电压、预设的灰阶电压的对应关系；根据馈入电压，得到显示面板的馈入效应检测结果。通过上述显示面板检测方法、装置和显示装置，不需要通过第三方模拟软件测量寄生电容的大小，不会因为模拟失真使结果出现偏差，具有测量结果可靠性强的优点。

Description

显示面板检测方法、装置及显示装置
本申请要求于2018年10月23日提交中国专利局，申请号为201811239433.7，申请名称为“显示面板检测方法、装置和显示装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及显示技术领域，特别是涉及一种显示面板检测方法、装置及显示装置。
背景技术
这里的陈述仅提供与本申请有关的背景信息，不必然地构成现有技术。随着液晶显示技术的飞速发展，人们对液晶显示器的显示效果追求越来越高。在液晶显示器中，像素电极的电压电平受到TFT(Thin Film Transistor，薄膜晶体管)基板上寄生电容或存储电容等的影响而发生偏移，即发生馈入效应。此时需要根据发生偏移产生的馈入电压对液晶显示器的共极电压(Common Voltage,VC0M)进行修正，避免共极电压偏离液晶显示面板的正极性像素电压及负极性像素电压的中间值，导致液晶显示面板显示画面在极性反转时发生闪烁(Flicker)。
传统的显示面板检测方法需要通过第三方模拟软件测量寄生电容的大小，从而透过计算的方式得到馈入电压的大小，通过第三方模拟软件会导致模拟结果与实际失真，使得测量结果不准确，导致传统的显示面板检测方法测量结果可靠性差。
申请内容
根据本申请的各种实施例，提供一种显示面板检测方法、装置及显示装置。
一种显示面板检测方法，所述方法包括：
获取显示面板的画面数据，并根据所述画面数据得到显示面板的目标共极电压；
根据所述目标共极电压、预设的灰阶电压和预设的馈入电压计算公式，得到馈入电压，所述预设的馈入电压计算公式表征所述馈入电压与所述目标共极电压、所述预设的灰阶电压的对应关系；以及
根据所述馈入电压，得到显示面板的馈入效应检测结果。
一种显示面板检测装置，包括存储器和处理器，所述存储器中储存有计算机可读指令，所述计算机可读指令被所述处理器执行时，使得所述处理器执行以下步骤：
获取显示面板的画面数据，并根据所述画面数据得到显示面板的目标共极电压；
根据所述目标共极电压、预设的灰阶电压和预设的馈入电压计算公式，得到馈入电压，所述预设的馈入电压计算公式表征所述馈入电压与所述目标共极电压、所述预设的灰阶电压的对应关系；以及
根据所述馈入电压，得到显示面板的馈入效应检测结果。
一种显示装置，包括显示面板、存储器和处理器，所述存储器存储有计算机可读指令，所述计算机可读指令被所述处理器执行时，使得所述处理器执行以下步骤：
获取显示面板的画面数据，并根据所述画面数据得到显示面板的目标共极电压；
根据所述目标共极电压、预设的灰阶电压和预设的馈入电压计算公式，得到馈入电压，所述预设的馈入电压计算公式表征所述馈入电压与所述目标共极电压、所述预设的灰阶电压的对应关系；以及
根据所述馈入电压，得到显示面板的馈入效应检测结果。
本申请的一个或多个实施例的细节在下面的附图和描述中提出。本申请的其它特征、目的和优点将从说明书、附图以及权利要求书变得明显。
附图说明
为了更清楚地说明本申请实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图。
图1为一实施例中显示面板检测方法流程示意图；
图2为一实施例中目标共极电压获取流程示意图；
图3为一实施例中绑点灰阶与电压对应关系图；
图4为一实施例中馈入电压对共极电压的影响示意图；
图5为一实施例中对比法获取闪烁值的流程示意图；
图6为一实施例中对比法获取的亮度与时间关系曲线图；
图7为一实施例中JEITA法获取闪烁值的流程示意图；
图8为一实施例中JEITA法获取的幅值与频率对应关系图；
图9为一实施例中显示面板检测装置结构示意图；
图10为一实施例中显示装置结构示意图；
图11为另一实施例中显示装置结构示意图。
具体实施方式
为了便于理解本申请，下面将参照相关附图对本申请进行更全面的描述。附图中给出了本申请的较佳的实施例。但是，本申请可以以许多不同的形式来实现，并不限于本文所描述的实施例。相反地，提供这些实施例的目的是使对本申请的公开内容的理解更加透彻全面。
请参阅图1，一种显示面板检测方法，包括：获取显示面板的画面数据，并根据画面数据得到显示面板的目标共极电压；根据目标共极电压、预设的灰阶电压和预设的馈入电压计算公式，得到馈入电压；根据馈入电压，得到 显示面板的馈入效应检测结果。
具体地，灰阶是指将最亮与最暗之间的亮度变化，区分为若干份，表示由最暗到最亮之间不同亮度的层次级别，以便于进行信号输入相对应的屏幕亮度管控。以8bit panel为例，具有256个亮度层次，分别为0-255，我们称之为256灰阶。在液晶显示中，每个像素均由不同亮度层次的红、绿、蓝三种子像素组合起来，最终形成不同的色彩点。闪烁是指正极性像素电压和负极性像素电压不对称时，导致所产生的亮度也不一致的情况。馈入电压即为当栅极电压由开态高电平向关态低电平切换时，由于寄生电容的存在，导致最终施加到像素的数据线电压同初始电压发生偏移时的电压偏移量。像素在进行充放电时，闸级扫描电压对TFT进行高电位开启，当充电完成之后，再给低电位时TFT关闭，在关闭TFT的同时，像素内形成封闭电路。在充电时TFT由低电位(一般为-7V)瞬间拉到高电位(一般为-30V)，充电完成之后再由高电位瞬间降到低电位。因此，闸级与TFT源极之间形成的寄生电容会对像素电压产生较大的影响，此时会产生馈入电压。
在液晶显示面板中，共极电压(即为液晶显示面板的共电极电压，VC0M)仅能设置为一个固定值，当馈入电压过大时会使显示面板液晶上产生交流电压成分，从而容易产生画面闪烁或残影(Image Sticking)。目标共极电压是指显示面板的闪烁度最小时，显示面板的共电极的电压，只有在目标共极电压情况下，才能保证显示面板闪烁或残影的幅度最低，得到较佳的显示画面。应当指出的是，可以通过闪烁测量探头或亮度仪进行灰阶闪烁画面的画面数据采集，在进行显示面板的馈入效应检测时，直接接收闪烁测量探头或亮度仪对显示面板的灰阶闪烁画面采集并发送的画面数据，进行相应的分析即可。
预设的馈入电压计算公式表征馈入电压与目标共极电压、预设的灰阶电压的对应关系。预设的灰阶电压是指灰阶画面对应的绑点灰阶下所施加的电压。在同一制造工艺中，各个显示面板的灰阶电压都是一定的，在不同的制造工艺条件下，可能会有差别。请参阅图3，为一实施例中，灰阶画面的绑点灰阶对应的电压值，在此实施例中，绑点灰阶包括了正绑点灰阶和负绑点灰 阶，相应的灰阶电压值也包括正灰阶电压和负灰阶电压。其中正灰阶电压是指在正极性灰阶下对应的驱动电压值，负灰阶电压是指在负极性灰阶下对应的驱动电压值。在进行馈入电压计算时，根据输入的目标共极电压、预设的馈入电压计算公式和预设的灰阶电压即可得到。不需要经过第三方软件的模拟，避免了模拟与实际失真的可能性，具有馈入电压计算结果更为准确的优点。
显示面板的偏移是指像素电极的电压电平受到TFT基板上寄生电容或存储电容等的影响而发生偏移，而TFT基板上寄生电容或存储电容直接影响的是馈入电压的大小，因此，可以根据馈入电压的大小(即得到的显示面板馈入效应检测结果)来评估显示面板的偏移程度。可以理解的是，馈入电压的数值越大，表示像素电极的电压电平收到TFT基板上的寄生电容或存储电容的影响越大，即显示面板的偏移程度越大。应当指出的是，对于不同灰阶的灰阶闪烁画面，均可采用上述方法进行馈入电压的计算，同样地是根据该灰阶下的灰阶闪烁画面的闪烁值确定目标共极电压，然后根据预设的灰阶电压和预设的馈入电压计算公式和目标共极电压进行计算得到。
在一个实施例中，请参阅图2，获取显示面板的画面数据，并根据画面数据得到显示面板的目标共极电压包括：调节显示面板的共极电压，获取对显示面板在不同共极电压下灰阶闪烁画面发生闪烁时采集得到的画面数据；根据画面数据得到不同共极电压下的闪烁值，并将闪烁值最小时对应的共极电压作为目标共极电压。
具体地，当共极电压发生改变时，灰阶画面的就会发生不同程度的闪烁，根据灰阶画面的闪烁程度不一样，得到相应的画面数据。应当指出的是，在进行共极电压调整时，可以采用每间隔一定大小的共极电压时，例如，在一个实施例中，每间隔0.01V电压大小，进行一次共极电压调整，然后记录每一共极电压情况下，灰阶画面对应的画面数据。可以理解，在其它实施例中，还可以是间隔其它大小的电压值，进行一次共极电压调整，然后记录各个共极电压对应的画面数据。通过不断的对共极电压进行调整，得到对应的画面 数据，以便于对得到的画面数据进行对比分析，得到与画面数据相对应的闪烁值。
在一个实施例中，在进行共极电压调整时，可以是通过色彩分析仪对准显示面板的中心，显示面板显示相应的灰阶闪烁画面，通过色彩分析仪向Gamma IC里对应的共极电压寄存器发送相应的调节指令，共极电压寄存器输出不同的共极电压使显示面板的灰阶闪烁画面发生闪烁，然后获取各个共极电压对应的闪烁值进行目标共极电压的分析。
目标共极电压即为在该共极电压情况下，灰阶闪烁画面的闪烁程度最低，也就是闪烁值最小。每调整一次共极电压，均得到该共极电压下闪烁画面的闪烁值，将所得到的各个闪烁值进行比较分析，得到最小闪烁值，然后找到该闪烁值对应的共极电压，即为目标共极电压。进一步地，在一个实施例中，为了得到更为准确的目标共极电压，在对得到的各个闪烁值进行对比分析，得到最小闪烁值之后，对最小闪烁值对应的共极电压与之前一共极电压和最小闪烁值对应的共极电压与后一共极电压之间，以较小的电压间隔再次进行闪烁值测量，以保证目标共极电压的准确性；例如，以电压间隔为0.1V的共极电压进行调整时，得到最小闪烁值时共极电压为3V，为了保证目标共极电压的准确性，在2.9V-3V之间和3V-3.1V之间，以电压间隔为0.01V，再次进行闪烁值测量。可以理解，在其它实施例中，还可以采用其它的方法来进一步确定目标共极电压，并不限于上述实施例中的方法。通过调整共极电压来进行闪烁值测量，从而得到目标共极电压，以便于后续步骤中根据共极电压进行馈入电压的计算和分析。
在一个实施例中，预设的灰阶电压包括正灰阶电压和负灰阶电压，根据目标共极电压、预设的灰阶电压和预设的馈入电压计算公式，得到馈入电压为：
Figure PCTCN2018120188-appb-000001
其中，ΔV p为馈入电压，V d+为正灰阶电压，V d-为负灰阶电压，V′ com，为目标共极电压。
具体地，请参阅图4，在像素的充放电过程中，如果没有馈入电压的影响， 共极电压可由正负灰阶电压的中心表示，即为
Figure PCTCN2018120188-appb-000002
但是馈入电压的产生会使显示面板液晶上产生交流成分，此时，如考虑馈入电压的影响，则理想的目标共极电压为：
Figure PCTCN2018120188-appb-000003
因此，我们可以根据保证共极电压处于理想最佳状态时，馈入电压可以根据：
Figure PCTCN2018120188-appb-000004
进行计算。
在一个实施例中，请参阅图5，画面数据为亮度构成数据，根据画面数据得到不同共极电压下的闪烁值包括：获取灰阶闪烁画面的交流数据和直流数据；根据交流数据和直流数据，得到相应的闪烁值。
具体地，交流数据是指显示面板在一定亮度情况下，通过交流电压所产生的亮度部分的数据，直流数据是指在相同亮度情况下，通过直流电压所产生的亮度部分的数据，具体表现为使显示面板达到对应亮度时所提供的交流电压大小和直流电压大小。可以通过闪烁测量探头对显示面板显示的灰阶闪烁画面进行测量，得到一定时间段内，相应共极电压条件下的灰阶闪烁画面的亮度构成数据，请参阅图6，该亮度构成数据通过亮度与时间的关系曲线表示。根据一定时间段内的灰阶闪烁画面的亮度变化关系可以得到，该共极电压下，交流数据的大小以及直流数据的大小。
在一定的条件下，闪光出现在显示面板上就称之为闪烁，液晶显示面板中闪烁通常是周期性出现的，会对人眼造成较大的伤害。在灰阶闪烁画面的电压(也可以为亮度)周期性变化的过程中，振幅越大，表示闪烁越明显。根据得到的灰阶画面亮度随时间的变化关系中，既包括了交流数据所引起的亮度变化，也包括了直流数据所引起的亮度变化，根据交流数据与直流数据进行分析计算，就能够得到对应共极电压条件下的闪烁值。
进一步地，在一个实施例中，根据交流数据和直流数据，得到相应的闪烁值为：
Figure PCTCN2018120188-appb-000005
其中，S为闪烁值，A为交流数据，D为直流数据。
具体地，交流数据与直流数据的比值即为闪烁值。在一个实施例中，交流数据为V max-V min，直流数据为
Figure PCTCN2018120188-appb-000006
其中，V max为最大电压，V min为最小电压。由于画面的亮度与电压成正比关系，直接采用不同的电压来表示不同的亮度，所以V max也表示最大亮度，V min表示最小亮度。通过
Figure PCTCN2018120188-appb-000007
Figure PCTCN2018120188-appb-000008
计算得到闪烁值，其中，S为闪烁值，V max为最大电压，V min为最小电压。通过对比法(即根据交流数据和直流数据进行计算)得到每一共极电压下，灰阶闪烁画面的闪烁值，以便于后续步骤中，根据闪烁值进行目标共极电压的分析判断，具有操作简单的优点。
在一个实施例中，请参阅图7，画面数据为频率构成数据，根据画面数据得到不同共极电压下的闪烁值包括：获取灰阶闪烁画面的第一频率数据和第二频率数据；根据第一频率数据和第二频率数据，得到相应的闪烁值。
具体地，由于人类的闪烁感知大约在30Hz的时候开始递减，并且在频率超过60Hz之后人眼睛无法感知到，而液晶显示面板的闪烁通常会超过30Hz，采用JEITA法能够精确地测量得到闪烁相关的振幅和频率，进而得到相应的闪烁值；JEITA法即为基于JEITA标准的一种闪烁值测量方法。通过亮度仪对显示面板的灰阶闪烁画面进行亮度采集，得到相应的信号并传输到集成器，通过一个由于频率差异而降低灵敏度的滤镜将信号发出，然后将该信号输出到FFT(Fast Fourier Transform，快速傅里叶变换)分析仪进行加工处理，通过一种频率构成的能量分显示出来，即为与闪烁对应的频率构成能量关系。应当指出的是。在一个实施例中，第一频率数据即为最大频率对应的能量幅值，第二频率数据即频率为零(直流情况下)时对应的能量幅值。可以理解，在其它实施例中，在误差允许的范围内，第一频率数据还可以是与最大频率较为接近的频率所对应的能量幅值，第二频率数据还可以是与零频率较为接近的频率所对应的能量幅值。在进行显示面板的馈入效应检测时，直接接收亮度仪采集并通过集成器和FFT分析仪进行处理之后得到的频率构成数据， 进行相应的分析即可。
根据频率构成能量数据可以得到各个频率构成中，相应的幅值大小，即频率与幅值的对应关系。根据频率为0时的幅值，以及其余频率情况下最大频率的幅值进行分析计算，就能够得到对应的闪烁值。在不同的共极电压情况下，各个频率构成的情况也不一样，根据各个共极电压条件下得到的闪烁值进行对比分析，就能够得到闪烁最小时相应的共极电压。
进一步地，在一个实施例中，根据第一频率数据和第二频率数据，得到相应的闪烁值为：
Figure PCTCN2018120188-appb-000009
其中，S为闪烁值，P X为第一频率数据，P O为第二频率数据。
具体地，请参阅图8，为一实施例中频率构成能量关系结构图，其中横坐标表示频率，纵坐标表示幅值。频率为0时的幅值大小记为P O，在本实施例中，还具有另外两个频率成分，其幅值分别为P X1和P X2，其中较大幅值为P X1，所以，对应的闪烁值
Figure PCTCN2018120188-appb-000010
通过JEITA法测量闪烁值，不受人眼所能观察的频率范围的限制，能够准确测量得到闪烁相关的振幅和频率，具有测量精度高的优点。
上述显示面板检测方法，能够根据显示面板的画面数据，得到显示面板对应的目标共极电压，然后根据得到的目标共极电压与预设的灰阶电压和预设的馈入电压计算公式得到对应的馈入电压，从而得到显示面板的馈入效应检测结果。通过上述显示面板检测方法不需要通过第三方模拟软件测量寄生电容的大小，不会因为模拟失真使结果出现偏差，具有测量结果可靠性强的优点。
请参阅图9，一种显示面板检测装置，包括存储器和处理器，存储器中储存有计算机可读指令，计算机可读指令被处理器执行时，使得处理器执行以下步骤：获取显示面板的画面数据，并根据画面数据得到显示面板的目标共 极电压；根据目标共极电压、预设的灰阶电压和预设的馈入电压计算公式，得到馈入电压，预设的馈入电压计算公式表征馈入电压与目标共极电压、预设的灰阶电压的对应关系；以及根据馈入电压，得到显示面板的馈入效应检测结果。
具体地，灰阶是指将最亮与最暗之间的亮度变化，区分为若干份，表示由最暗到最亮之间不同亮度的层次级别，以便于进行信号输入相对应的屏幕亮度管控。以8bit panel为例，具有256个亮度层次，分别为0-255，我们称之为256灰阶。在液晶显示中，每个像素均由不同亮度层次的红、绿、蓝三种子像素组合起来，最终形成不同的色彩点。闪烁是指正极性像素电压和负极性像素电压不对称时，导致所产生的亮度也不一致的情况。馈入电压即为当栅极电压由开态高电平向关态低电平切换时，由于寄生电容的存在，导致最终施加到像素的数据线电压同初始电压发生偏移时的电压偏移量。像素在进行充放电时，闸级扫描电压对TFT进行高电位开启，当充电完成之后，再给低电位时TFT关闭，在关闭TFT的同时，像素内形成封闭电路。在充电时TFT由低电位(一般为-7V)瞬间拉到高电位(一般为-30V)，充电完成之后再由高电位瞬间降到低电位。因此，闸级与TFT源极之间形成的寄生电容会对像素电压产生较大的影响，此时会产生馈入电压。
在液晶显示面板中，共极电压(即为液晶显示面板的共电极电压，VC0M)仅能设置为一个固定值，当馈入电压过大时会使显示面板液晶上产生交流电压成分，从而容易产生画面闪烁或残影。目标共极电压是指显示面板的闪烁度最小时，显示面板的共电极的电压，只有在目标共极电压情况下，才能保证显示面板闪烁或残影的幅度最低，得到较佳的显示画面。应当指出的是，可以通过闪烁测量探头或亮度仪进行灰阶闪烁画面的画面数据采集，在进行显示面板的馈入效应检测时，直接接收闪烁测量探头或亮度仪对显示面板的灰阶闪烁画面采集并发送的画面数据，进行相应的分析即可。
预设的馈入电压计算公式表征馈入电压与目标共极电压、预设的灰阶电压的对应关系。预设的灰阶电压是指灰阶画面对应的绑点灰阶下所施加的电 压。在同一制造工艺中，各个显示面板的灰阶电压都是一定的，在不同的制造工艺条件下，可能会有差别。请参阅图3，为一实施例中，灰阶画面的绑点灰阶对应的电压值，在此实施例中，绑点灰阶包括了正绑点灰阶和负绑点灰阶，相应的灰阶电压值也包括正灰阶电压和负灰阶电压。其中正灰阶电压是指在正极性灰阶下对应的驱动电压值，负灰阶电压是指在负极性灰阶下对应的驱动电压值。在进行馈入电压计算时，根据输入的目标共极电压、预设的馈入电压计算公式和预设的灰阶电压即可得到。不需要经过第三方软件的模拟，避免了模拟与实际失真的可能性，具有馈入电压计算结果更为准确的优点。
显示面板的偏移是指像素电极的电压电平受到TFT基板上寄生电容或存储电容等的影响而发生偏移，而TFT基板上寄生电容或存储电容直接影响的是馈入电压的大小，因此，可以根据馈入电压的大小(即得到的显示面板馈入效应检测结果)来评估显示面板的偏移程度。可以理解的是，馈入电压的数值越大，表示像素电极的电压电平收到TFT基板上的寄生电容或存储电容的影响越大，即显示面板的偏移程度越大。应当指出的是，对于不同灰阶的灰阶闪烁画面，均可采用上述方法进行馈入电压的计算，同样地是根据该灰阶下的灰阶闪烁画面的闪烁值确定目标共极电压，然后根据预设的灰阶电压和预设的馈入电压计算公式和目标共极电压进行计算得到。
在一个实施例中，获取显示面板的画面数据，并根据画面数据得到显示面板的目标共极电压，包括：调节显示面板的共极电压，获取对显示面板在不同共极电压下灰阶闪烁画面发生闪烁时采集得到的画面数据；根据画面数据得到不同共极电压下的闪烁值，并将闪烁值最小时对应的共极电压作为目标共极电压。
在一个实施例中，根据画面数据得到不同共极电压下的闪烁值包括：获取灰阶闪烁画面的交流数据和直流数据；根据交流数据和直流数据，得到相应的闪烁值。
在一个实施例中，根据交流数据和直流数据，得到相应的闪烁值为：
Figure PCTCN2018120188-appb-000011
其中，S为闪烁值，A为交流数据，D为直流数据。
在一个实施例中，根据画面数据得到不同共极电压下的闪烁值包括：获取灰阶闪烁画面的第一频率数据和第二频率数据；根据第一频率数据和第二频率数据，得到相应的闪烁值。
在一个实施例中，根据第一频率数据和第二频率数据，得到相应的闪烁值为：
Figure PCTCN2018120188-appb-000012
其中，S为闪烁值，P X为第一频率数据，P O为第二频率数据。
在一个实施例中，预设的灰阶电压包括正灰阶电压和负灰阶电压，根据目标共极电压、预设的灰阶电压和预设的馈入电压计算公式，得到馈入电压为：
Figure PCTCN2018120188-appb-000013
其中，ΔV p为馈入电压，V d+为正灰阶电压，V d-为负灰阶电压，V′ com为目标共极电压。
上述显示面板检测装置，能够根据显示面板的画面数据，得到显示面板对应的目标共极电压，然后根据得到的目标共极电压与预设的灰阶电压和预设的馈入电压计算公式得到对应的馈入电压，从而得到显示面板的馈入效应检测结果。通过上述显示面板检测装置不需要通过第三方模拟软件测量寄生电容的大小，不会因为模拟失真使结果出现偏差，具有测量结果可靠性强的优点。
请参阅图10，一种显示装置，包括显示面板20、存储器和处理器，存储器存储有计算机可读指令，计算机可读指令被处理器执行时，使得处理器执 行以下步骤：获取显示面板的画面数据，并根据画面数据得到显示面板的目标共极电压；根据目标共极电压、预设的灰阶电压和预设的馈入电压计算公式，得到馈入电压，预设的馈入电压计算公式表征馈入电压与目标共极电压、预设的灰阶电压的对应关系；以及根据馈入电压，得到显示面板的馈入效应检测结果。
在一个实施例中，请参阅图11，显示面板20包括：阵列基板21；彩膜基板22，彩膜基板22与阵列基板21相对设置；以及液晶层23，液晶层23设置于阵列基板21与彩膜基板22之间。
具体地，阵列基板21即为薄膜晶体管阵列基板，其上设置有沿第一方向排列的数据线和沿第二方向排列的扫描线，数据线与扫描线交叉处限定有呈阵列排布的像素单元，在为像素单元提供扫描信号和数据信号之后，像素单元进行发光。而彩膜基板22有玻璃基板由玻璃基板、黑色矩阵、彩色层、保护层和ITO导电膜组成，能够精确选择通过一定波段范围的光，并将其它波段的光反射。阵列基板21和彩膜基板22相对设置，在光源以及相应驱动信号的驱动下，能够进行图像显示。
在一个实施例中，阵列基板21包括多个呈阵列排布的像素单元。
具体地，阵列基板21具有多条沿第一方向排列的扫描线以及多条沿第二方向排列的信号线，多条扫描线与多条信号线绝缘相交，并且，多条扫描线与多条信号线绝缘相交出限定了呈阵列排布的多个像素单元。各个扫描线分别与相应的阵列基板行驱动电路连接，为各个像素行提供扫描驱动信号，每一像素单元分别通过扫描线和数据线提供扫描驱动信号和数据驱动信号之后，完成对应的显示功能。
在一个实施例中，像素单元包括红(Red，R)色像素单元、绿(Green，G)色像素单元、蓝(Blue，B)色像素单元和白(White，W)色像素单元，通过将阵列基板的像素单元设置为RGBW四色，应用于显示装置中，只需将白色像素单元在彩色滤光片设置对应的透明区域即可，能够改善彩色滤光片的透光率并降低背光模组的能耗。RGBW四色像素单元的具体排列方式，可 以根据实际使用情况排列，例如，在一个实施例中，每一像素行中的像素单元以RGBW四色循环的方式排列。可以理解，在其它实施例中，像素单元包括红色像素单元、绿色像素单元和蓝色像素单元，像素单元还可以是RGB三色像素单元循环的方式排列。
在一个实施例中，显示装置还包括：第一偏光片30，设置于彩膜基板22远离液晶层23的一侧；以及第二偏光片40，设置于阵列基板21远离液晶层23的一侧。
具体地，将液晶材料置于两片贴附光轴垂直的偏光片的透明导电玻璃之间，液晶分子在不加电压时平行于透明导电玻璃分布，并且在两片透明导电玻璃上分别配置有取向彼此垂直的配向膜，液晶分子依配向膜的细沟槽方向依序旋转排列，如果不加电场，光线从第二偏光片40射入，其偏振方向依液晶分子的排列旋转90度，能够从第一偏光片30射出，此时为亮态。如果在两片导电玻璃通电之后，两片导电玻璃间会形成电场，进而影响其间液晶分子的排列，当电压足够大时，分子沿电场垂直排列，光线的偏振方向不发生改变，光线无法穿透，进而遮住光源，从而在加电压的情况下形成了暗态。
在一个实施例中，显示装置还包括背光模组。具体地，通过背光模组为显示面板提供充足的亮度与分布均匀的光源，使其能正常的显示影像。液晶显示是被动发光元件，通过显示面板本身并不会发光，显示面板显示图像或字符是对光线进行调制的结果。
进一步地，在一个实施例中，背光模组为侧光式背光模组。具体地，侧光式背光模组是指发光源(Edge lighting)设置在导光板的侧面，导光板将光均匀地在液晶面板后面发亮。采用侧光式背光模组的设计，使得显示装置拥有轻量、薄型、窄框化、低耗电的优点。可以理解，在其它实施例中，背光模组还可以是直下型背光模组或中空型背光模组，只要能够为显示装置提供相应的光源即可。
在一个实施例中，提供了一种计算机可读存储介质，其上存储有计算机 可读指令，计算机可读指令被处理器执行时实现以下步骤：
获取显示面板的画面数据，并根据画面数据得到显示面板的目标共极电压；根据目标共极电压、预设的灰阶电压和预设的馈入电压计算公式，得到馈入电压，预设的馈入电压计算公式表征馈入电压与目标共极电压、预设的灰阶电压的对应关系；根据馈入电压，得到显示面板的馈入效应检测结果。
在一个实施例中，计算机可读指令被处理器执行时还实现以下步骤：
调节显示面板的共极电压，获取对显示面板在不同共极电压下灰阶闪烁画面发生闪烁时采集得到的画面数据；根据画面数据得到不同共极电压下的闪烁值，并将闪烁值最小时对应的共极电压作为目标共极电压。
在一个实施例中，计算机可读指令被处理器执行时还实现以下步骤：
获取灰阶闪烁画面的交流数据和直流数据；根据交流数据和直流数据，得到相应的闪烁值。
在一个实施例中，计算机可读指令被处理器执行时还实现以下步骤：
获取灰阶闪烁画面的第一频率数据和第二频率数据；根据第一频率数据和第二频率数据，得到相应的闪烁值。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，是可以通过计算机可读指令来指令相关的硬件来完成，所述的计算机可读指令可存储于一非易失性计算机可读取存储介质中，该计算机可读指令在执行时，可包括如上述各方法的实施例的流程。其中，本申请所提供的各实施例中所使用的对存储器、存储、数据库或其它介质的任何引用，均可包括非易失性和/或易失性存储器。非易失性存储器可包括只读存储器(ROM)、可编程ROM(PROM)、电可编程ROM(EPROM)、电可擦除可编程ROM(EEPROM)或闪存。易失性存储器可包括随机存取存储器(RAM)或者外部高速缓冲存储器。作为说明而非局限，RAM以多种形式可得，诸如静态RAM(SRAM)、动态RAM(DRAM)、同步DRAM(SDRAM)、双数据率SDRAM(DDRSDRAM)、增强型SDRAM(ESDRAM)、同步链路(Synchlink)DRAM(SLDRAM)、存储器总线(Rambus)直接RAM(RDRAM)、直接存储器总 线动态RAM(DRDRAM)、以及存储器总线动态RAM(RDRAM)等。
上述显示装置和存储介质，能够根据显示面板的画面数据，得到显示面板对应的目标共极电压，然后根据得到的目标共极电压与预设的灰阶电压和预设的馈入电压计算公式得到对应的馈入电压，从而得到显示面板的馈入效应检测结果。通过上述显示装置和存储介质不需要通过第三方模拟软件测量寄生电容的大小，不会因为模拟失真使结果出现偏差，具有测量结果可靠性强的优点。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。

Claims (20)

  1. 一种显示面板检测方法，所述方法包括：
    获取显示面板的画面数据，并根据所述画面数据得到显示面板的目标共极电压；
    根据所述目标共极电压、预设的灰阶电压和预设的馈入电压计算公式，得到馈入电压，所述预设的馈入电压计算公式表征所述馈入电压与所述目标共极电压、所述预设的灰阶电压的对应关系；以及
    根据所述馈入电压，得到显示面板的馈入效应检测结果。
  2. 根据权利要求1所述显示面板检测方法，其中，所述获取显示面板的画面数据，并根据所述画面数据得到显示面板的目标共极电压的步骤，包括：
    调节所述显示面板的共极电压，获取对显示面板在不同共极电压下灰阶闪烁画面发生闪烁时采集得到的画面数据；
    根据所述画面数据得到不同共极电压下的闪烁值，并将所述闪烁值最小时对应的共极电压作为目标共极电压。
  3. 根据权利要求2所述的显示面板检测方法，其中，所述根据所述画面数据得到不同共极电压下的闪烁值包括：
    获取所述灰阶闪烁画面的交流数据和直流数据；
    根据所述交流数据和所述直流数据，得到相应的闪烁值。
  4. 根据权利要求3所述的显示面板检测方法，其中，所述根据所述交流数据和所述直流数据，得到相应的闪烁值的步骤为：
    Figure PCTCN2018120188-appb-100001
    其中，S为闪烁值，A为交流数据，D为直流数据。
  5. 根据权利要求2所述的显示面板检测方法，其中，所述根据所述画面数据得到不同共极电压下的闪烁值包括：
    获取所述灰阶闪烁画面的第一频率数据和第二频率数据；
    根据所述第一频率数据和所述第二频率数据，得到相应的闪烁值。
  6. 根据权利要求5所述的显示面板检测方法，其中，所述根据所述第一频率数据和所述第二频率数据，得到相应的闪烁值的步骤为：
    Figure PCTCN2018120188-appb-100002
    其中，S为闪烁值，P X为第一频率数据，P O为第二频率数据。
  7. 根据权利要求1所述的显示面板检测方法，其中，所述预设的灰阶电压包括正灰阶电压和负灰阶电压，所述根据所述目标共极电压、预设的灰阶电压和预设的馈入电压计算公式，得到馈入电压的步骤为：
    Figure PCTCN2018120188-appb-100003
    其中，ΔV p为馈入电压，
    Figure PCTCN2018120188-appb-100004
    为正灰阶电压，
    Figure PCTCN2018120188-appb-100005
    为负灰阶电压，V′ com为目标共极电压。
  8. 一种显示面板检测装置，包括存储器和处理器，所述存储器中储存有计算机可读指令，所述计算机可读指令被所述处理器执行时，使得所述处理器执行以下步骤：
    获取显示面板的画面数据，并根据所述画面数据得到显示面板的目标共极电压；
    根据所述目标共极电压、预设的灰阶电压和预设的馈入电压计算公式，得到馈入电压，所述预设的馈入电压计算公式表征所述馈入电压与所述目标共极电压、所述预设的灰阶电压的对应关系；以及
    根据所述馈入电压，得到显示面板的馈入效应检测结果。
  9. 根据权利要求8所述的显示面板检测装置，其中，所述获取显示面板的画面数据，并根据所述画面数据得到显示面板的目标共极电压，包括：
    调节所述显示面板的共极电压，获取对显示面板在不同共极电压下灰阶闪烁画面发生闪烁时采集得到的画面数据；
    根据所述画面数据得到不同共极电压下的闪烁值，并将所述闪烁值最小时对应的共极电压作为目标共极电压。
  10. 根据权利要求9所述的显示面板检测装置，其中，所述根据所述画面数据得到不同共极电压下的闪烁值包括：
    获取所述灰阶闪烁画面的交流数据和直流数据；
    根据所述交流数据和所述直流数据，得到相应的闪烁值。
  11. 根据权利要求10所述的显示面板检测装置，其中，所述根据所述交流数据和所述直流数据，得到相应的闪烁值，为：
    Figure PCTCN2018120188-appb-100006
    其中，S为闪烁值，A为交流数据，D为直流数据。
  12. 根据权利要求9所述的显示面板检测装置，其中，所述根据所述画面数据得到不同共极电压下的闪烁值，包括：
    获取所述灰阶闪烁画面的第一频率数据和第二频率数据；
    根据所述第一频率数据和所述第二频率数据，得到相应的闪烁值。
  13. 根据权利要求12所述的显示面板检测装置，其中，所述根据所述第一频率数据和所述第二频率数据，得到相应的闪烁值，为：
    Figure PCTCN2018120188-appb-100007
    其中，S为闪烁值，P X为第一频率数据，P O为第二频率数据。
  14. 根据权利要求8所述的显示面板检测装置，其中，所述预设的灰阶电压包括正灰阶电压和负灰阶电压，所述根据所述目标共极电压、预设的灰阶电压和预设的馈入电压计算公式，得到馈入电压，为：
    Figure PCTCN2018120188-appb-100008
    其中，ΔV p为馈入电压，
    Figure PCTCN2018120188-appb-100009
    为正灰阶电压，
    Figure PCTCN2018120188-appb-100010
    为负灰阶电压，V′ com为目标共极电压。
  15. 一种显示装置，包括显示面板、存储器和处理器，所述存储器存储有计算机可读指令，所述计算机可读指令被所述处理器执行时，使得所述处理 器执行以下步骤：
    获取显示面板的画面数据，并根据所述画面数据得到显示面板的目标共极电压；
    根据所述目标共极电压、预设的灰阶电压和预设的馈入电压计算公式，得到馈入电压，所述预设的馈入电压计算公式表征所述馈入电压与所述目标共极电压、所述预设的灰阶电压的对应关系；以及
    根据所述馈入电压，得到显示面板的馈入效应检测结果。
  16. 根据权利要求15所述的显示装置，其中，所述显示面板包括：
    阵列基板；
    彩膜基板，所述彩膜基板与所述阵列基板相对设置；以及
    液晶层，所述液晶层设置于所述阵列基板与所述彩膜基板之间。
  17. 根据权利要求16所述的显示装置，其中，所述阵列基板包括多个呈阵列排布的像素单元。
  18. 根据权利要求16所述的显示装置，其中，所述显示装置还包括：
    第一偏光片，设置于所述彩膜基板远离所述液晶层的一侧；以及
    第二偏光片，设置于所述阵列基板远离所述液晶层的一侧。
  19. 根据权利要求15所述的显示装置，其中，所述显示装置还包括背光模组。
  20. 根据权利要求19所述的显示装置，其中，所述背光模组为侧光式背光模组。
PCT/CN2018/120188 2018-10-23 2018-12-11 显示面板检测方法、装置及显示装置 Ceased WO2020082525A1 (zh)

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