WO2020082525A1 - Procédé et dispositif de test de panneau d'affichage, et dispositif d'affichage - Google Patents

Procédé et dispositif de test de panneau d'affichage, et dispositif d'affichage 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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Prior art keywords
voltage
display panel
data
feed
preset
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PCT/CN2018/120188
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English (en)
Chinese (zh)
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李嘉航
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惠科股份有限公司
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Publication of WO2020082525A1 publication Critical patent/WO2020082525A1/fr

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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

La présente invention concerne un procédé et un dispositif de test de panneau d'affichage et un dispositif d'affichage. Le procédé de test comprend les étapes consistant à : acquérir des données d'image d'un panneau d'affichage, et obtenir une tension commune cible du panneau d'affichage en fonction des données d'image ; obtenir une tension d'alimentation en fonction de la tension commune cible, d'une tension d'échelle de gris prédéfinie et d'une formule de calcul de tension d'alimentation prédéfinie, la formule de calcul de tension d'alimentation prédéfinie représentant une correspondance de la tension d'alimentation avec la tension commune cible et la tension d'échelle de gris prédéfinie ; et obtenir, en fonction de la tension d'alimentation, un résultat de test concernant un effet d'alimentation du panneau d'affichage. Le procédé et le dispositif de test de panneau d'affichage et le dispositif d'affichage sont utilisés de telle sorte qu'il n'est pas nécessaire d'utiliser un logiciel de simulation tiers qui mesure la capacité parasite et qui produit un résultat de simulation médiocre en raison d'une distorsion de simulation. L'invention permet ainsi d'obtenir un résultat de mesure fiable.
PCT/CN2018/120188 2018-10-23 2018-12-11 Procédé et dispositif de test de panneau d'affichage, et dispositif d'affichage WO2020082525A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811239433.7A CN109166505A (zh) 2018-10-23 2018-10-23 显示面板检测方法、装置和显示装置
CN201811239433.7 2018-10-23

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