WO2020140254A1 - Procédé de compensation de luminosité, dispositif d'affichage pliable et support de stockage - Google Patents

Procédé de compensation de luminosité, dispositif d'affichage pliable et support de stockage Download PDF

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Publication number
WO2020140254A1
WO2020140254A1 PCT/CN2019/070384 CN2019070384W WO2020140254A1 WO 2020140254 A1 WO2020140254 A1 WO 2020140254A1 CN 2019070384 W CN2019070384 W CN 2019070384W WO 2020140254 A1 WO2020140254 A1 WO 2020140254A1
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WIPO (PCT)
Prior art keywords
brightness
screens
sub
display
value
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PCT/CN2019/070384
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English (en)
Chinese (zh)
Inventor
徐宁
孙家松
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深圳市柔宇科技有限公司
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Application filed by 深圳市柔宇科技有限公司 filed Critical 深圳市柔宇科技有限公司
Priority to CN201980073423.7A priority Critical patent/CN113261051A/zh
Priority to PCT/CN2019/070384 priority patent/WO2020140254A1/fr
Priority to PCT/CN2019/075173 priority patent/WO2020140313A1/fr
Priority to CN201980073111.6A priority patent/CN113261050A/zh
Publication of WO2020140254A1 publication Critical patent/WO2020140254A1/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
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals

Definitions

  • the present invention relates to the field of display, and in particular to a brightness compensation method, a foldable display device, and a storage medium.
  • the foldable display device has a fully expanded state, that is, all the sub-screens are fully expanded to form a common display screen, which meets the user's size requirements; a fully folded state, that is, all the sub-screens are moved by winding, folding, etc.
  • the size of the terminal is minimized to meet people's needs for portability; and the intermediate state, that is, the sub-screens are not fully expanded, but the mobile terminal has not reached the state of minimum size.
  • the brightness of each sub-screen is accumulated with the use time
  • the degree of attenuation is also different.
  • the brightness of each split screen will be inconsistent, that is, the same display screen will appear different The brightness value, which will seriously affect the user experience.
  • the object of the present invention is to solve the problem of inconsistent brightness in various areas of the foldable display device.
  • a brightness compensation method which is applied to a foldable display device including a plurality of sub-screens, each of which has an initial brightness value when initially used; the method includes:
  • the at least two brightness compensation values perform brightness compensation on the at least two co-display sub-screens respectively, so that the difference in brightness between the at least two co-display sub-screens is within a preset range.
  • a foldable display device which includes a plurality of sub-screens, a processor, and a memory, the plurality of sub-screens each having an initial brightness value during initial use, wherein the memory stores a computer-readable program,
  • the computer-readable program is configured to be executed by the processor, and when the computer-readable program is executed by the processor, it is implemented:
  • the at least two brightness compensation values perform brightness compensation on the at least two co-display sub-screens respectively, so that the difference in brightness between the at least two co-display sub-screens is within a preset range.
  • a computer-readable storage medium on which a computer-readable program is stored, and when the computer-readable program is executed by a processor, the above method is implemented.
  • the beneficial effect lies in: determining at least two brightness compensation values by detecting at least two brightness attenuation values corresponding to at least two co-display sub-screens in a co-display state, and according to at least two brightness compensation values
  • the two co-display sub-screens are separately compensated for brightness so that the difference in brightness between at least two co-display sub-screens is within a preset range.
  • only the brightness compensation is performed on the co-display sub-screen.
  • the brightness compensation value is determined based on the brightness attenuation value, and on the premise of achieving uniform brightness, the achievable brightness compensation value is selected to improve the achievability of brightness compensation.
  • FIG. 1 is an application scenario diagram of a brightness compensation method in an embodiment of the invention
  • FIG. 2 is a flowchart of a brightness compensation method provided by an embodiment of the present invention.
  • FIG. 3 is a flowchart of detecting at least two brightness attenuation values corresponding to at least two co-display sub-screens in the co-display state according to an embodiment of the present invention
  • FIG. 4 is a flowchart of determining at least two brightness compensation values corresponding to the at least two co-display sub-screens based on the at least two brightness attenuation values according to an embodiment of the present invention
  • FIG. 5 is a flowchart of a brightness compensation method provided by an embodiment of the present invention.
  • FIG. 6 is a flowchart of a brightness compensation method provided by an embodiment of the present invention.
  • FIG. 7 is a flowchart of determining whether a foldable display device is in a co-display state according to an embodiment of the present invention.
  • FIG. 8 is a flowchart of determining whether to perform brightness compensation on at least two co-display sub-screens according to at least two brightness compensation values according to an embodiment of the present invention
  • FIG. 9 is a schematic diagram of a foldable display device provided by the present invention.
  • FIG. 1 is an application scene diagram of a brightness compensation method according to an embodiment of the present invention.
  • the brightness compensation method is applied to a foldable display device.
  • the foldable display device includes a plurality of sub-screens that can be relatively transported around a rotation axis, or a flexible screen that can be bent or wound arbitrarily as a whole, or a combination of the two, and other functions that have a common display expansion state and a closed display function or are displayed separately Display device in folded state.
  • the plurality of sub-screens (including two or more) of the foldable display device includes a plurality of bending portions 11 and non-bending portions 12 which are arranged at intervals.
  • the "co-display state” referred to in the context means that at least two sub-screens of the foldable display device together constitute the same display interface. Specifically, the at least two sub-screens are continuous, that is, there are no sub-screens other than the at least two sub-screens in between.
  • the sub-screens that together constitute the same display interface are referred to as "co-display sub-screens" in context. It should be particularly pointed out that the "co-display sub-screen” here is not a static concept, that is, the sub-screens referred to by the "co-display sub-screen” are different in different display states.
  • the foldable display device 1 includes sub-screens A, B, and C (not shown in the figure) that are connected in turn, and when the foldable display device is fully expanded, the co-display sub-screen indicates that the sub-screens A, B, and C are included.
  • the foldable display device 1 is completely folded, then the foldable display device 1 is in a non-co-display state, so there is no co-display sub-screen.
  • a and B together form the same display interface, and C displays or does not display separately, A and B are the co-display sub-screens; and when B and C together form the same display interface, and A displays or does not display separately, B and C are the co-display screens.
  • the brightness compensation method provided by an embodiment of the present invention includes:
  • Step S101 Detect at least two brightness attenuation values corresponding to at least two co-display sub-screens in the co-display state, and the at least two co-display sub-screens together constitute the same display interface.
  • the multiple sub-screens each have an initial brightness value during initial use
  • the memory stores a mapping relationship between the cumulative use time of the sub-screen and the brightness attenuation value.
  • the foldable display device further includes a timer for separately counting the cumulative usage time of each sub-screen.
  • the timer may be implemented by software or may be a specific hardware device.
  • the cumulative usage time is a theoretical usage time, and the theoretical usage time may be, for example, the actual usage time of the sub-screen under the brightness of the first driving current or voltage drive; when the display status of the sub-screen For content with higher contrast or higher brightness requirements, the theoretical duration of use is greater than the actual duration of use; otherwise, it is less than the actual duration of use.
  • the specific conversion method can be converted, for example, by the ratio of the required second driving current or voltage to the first driving current or voltage. However, this application is not limited to the conversion methods stated here.
  • the co-display sub-screen is used for brightness attenuation detection, which is used for the brightness compensation mentioned below. Compared with the brightness compensation for all sub-screens in the display state, it is guaranteed to constitute the same display The brightness uniformity of the interface also reduces the compensation power consumption.
  • step S101 includes:
  • Step S201 Count at least two cumulative usage durations corresponding to the at least two co-display sub-screens.
  • Step S202 Determine at least two brightness attenuation values corresponding to the at least two co-display sub-screens based on the mapping relationship and the at least two cumulative use durations.
  • the cumulative usage time is the actual cumulative usage time; and in another embodiment, the cumulative usage time is the theoretical usage time.
  • the mapping relationship stored in the memory mentioned above is obtained through multiple studies of the correspondence between the brightness attenuation of the foldable device and the cumulative use time, so as to obtain the mapping relationship closest to the actual situation.
  • each sub-screen corresponds to a mapping relationship
  • the brightness attenuation value of the sub-screen in the co-display state is calculated according to the cumulative usage time of each sub-screen and the mapping relationship.
  • mapping relationships and initial brightness values of the multiple sub-screens are the same. It should be noted that the mapping relationship and initial brightness values of the multiple sub-screens may also be different.
  • Step S102 Determine at least two brightness compensation values corresponding to the at least two co-display sub-screens based on the at least two brightness attenuation values.
  • the brightness compensation value is determined based on the brightness attenuation value. On the premise of achieving uniform brightness, the achievable brightness compensation value is selected to improve the achievability of brightness compensation.
  • step S102 includes:
  • Step S301 Determine a weighted average brightness attenuation value based on the at least two brightness attenuation values, and the weighted average brightness attenuation value is a weighted average of the plurality of brightness attenuation values.
  • At least two luminance attenuation values have the same weight
  • the weighted average luminance attenuation value is the average of at least two luminance attenuation values.
  • the number of sub-screens in the co-display state is 3, and the three brightness attenuation values are 30%L, 20%L, and 10%L, respectively, where L is the initial brightness value, then the calculated weighted average brightness attenuation The value is 20% L.
  • the weights of at least two brightness attenuation values may also be different.
  • the number of sub-screens in a co-display state is three, and the three brightness attenuation values and weights are 30% L, 45%, 20%L, 10% and 10%L, 45%, then the brightness attenuation value is:
  • the weight of the at least two brightness attenuation values is proportional to the area of the at least two co-display sub-screens; alternatively, the weight of the at least two brightness attenuation values is The drive current or drive voltage required when the two co-display screens are set to the same brightness is proportional.
  • the beneficial effect of this process is that the larger the co-display sub-screen, or the larger the drive current or voltage required to achieve the same brightness, then when the subsequent brightness compensation, the co-display sub-screen under the premise of the same compensation value
  • the driving current or voltage is also larger, so when calculating the brightness attenuation, it is necessary to more consider the co-display sub-screen with a larger screen or a larger driving current or voltage under the premise of the same compensation brightness.
  • the above embodiment is very effective to differentiate the brightness compensation value of each co-display sub-screen, so that in the subsequent steps In the middle, the display brightness of the folded display device after brightness compensation is made more uniform.
  • the brightness closest to the current brightness of each co-display sub-screen can be found; or, on the premise that the brightness of each co-display sub-screen is the same or substantially the same, the overall brightness compensation is minimized
  • the value in other words, minimizes the overall drive current or drive voltage required for brightness compensation.
  • Step S302 Based on the weighted average brightness attenuation value and the at least two brightness attenuation values, determine at least two brightness compensation values corresponding to the at least two co-display sub-screens.
  • the number of co-display sub-screens is 3, the three brightness attenuation values are 30%L, 20%L and 10%L, respectively, and the calculated weighted average brightness attenuation value is 20%L Then, the brightness compensation value of each sub-screen of the industrial display sub-screen is 10%, 0 and -10%, respectively.
  • Step S103 Perform brightness compensation on the at least two co-display sub-screens respectively according to the at least two brightness compensation values, so that the brightness difference between the at least two co-display sub-screens is within a preset range.
  • the brightness compensation value includes the compensation value of the drive voltage or drive current of at least two co-display sub-screens, and the drive voltage or drive current is used to drive at least two co-display sub-screens for brightness compensation;
  • the brightness compensation of the two co-display screens includes adjusting the drive voltage or drive current of the at least two co-display screens according to the compensation value of the drive voltage or drive current, respectively Brightness compensation.
  • the brightness compensation method proposed above determines the brightness compensation value by detecting at least two brightness attenuation values of at least two co-display sub-screens in the co-display state, and performs the sub-screens in the co-display state according to the brightness compensation value Brightness compensation to ensure the uniformity of brightness under the co-display state of the foldable display device.
  • the brightness compensation method provided by an embodiment of the present invention includes:
  • Step S401 Detect at least two brightness attenuation values corresponding to at least two co-display sub-screens in the co-display state, and the at least two co-display sub-screens together constitute the same display interface.
  • Step S402 Determine at least two brightness compensation values corresponding to the at least two co-display sub-screens based on the at least two brightness attenuation values.
  • Step S403 According to the at least two brightness compensation values, perform brightness compensation on the at least two co-display sub-screens respectively, so that the brightness difference between the at least two co-display sub-screens is within a preset range.
  • Step S404 Acquire the cumulative usage time of the multiple sub-screens regularly.
  • the co-display screen During the use of the co-display screen, record the duration of use and periodically obtain the cumulative duration of use. That is, after a certain period of time, the cumulative usage time is obtained, and the brightness compensation value of the co-display sub-screen is recalculated according to the cumulative usage time, so as to more accurately compensate the brightness of the co-display sub-screen and ensure the uniformity of the co-display sub-screen brightness.
  • the brightness compensation method provided by an embodiment of the present invention includes:
  • Step S501 Determine whether the foldable display device is in a co-display state.
  • step S501 includes:
  • Step S601 Detect the angle between each adjacent bending part and the non-bending part.
  • Step S602 If at least one of the included angles is within a preset angle range, it is determined that the foldable display device is in a co-display state.
  • each sub-screen on the same plane in the foldable display device is set as a sub-screen in a co-display state.
  • the angle between one adjacent bending part and the non-bending part is 180 degrees, it is determined that the foldable display device is in the co-display state.
  • the user may not fully flatten the foldable display device, or because the foldable display device fails to fully unfold, but at this time between the bent portion and the non-bent portion If the included angle satisfies, the same display interface can be formed.
  • the angle is the acceptable bending angle of the user, and the foldable display device is also judged to be in the co-display state.
  • the preset angle range is -30°-30°, and in another embodiment, the preset angle range is -10°-10° or -15°-15°.
  • Step S502 Detect at least two brightness attenuation values corresponding to at least two co-display sub-screens in the co-display state.
  • Step S503 Determine at least two brightness compensation values corresponding to the at least two co-display sub-screens based on the at least two brightness attenuation values.
  • Step S504 Perform brightness compensation on the at least two co-display sub-screens respectively according to the at least two brightness compensation values, so that the difference in brightness between the at least two co-display sub-screens is within a preset range.
  • the method before performing brightness compensation on the at least two co-display sub-screens, the method further includes:
  • Step S701 According to the at least two brightness attenuation values, determine whether the absolute value of the difference between the maximum value and the minimum value of the at least two brightness attenuation values is greater than a preset threshold.
  • Step S702 If the absolute value of the difference between the maximum value and the minimum value of the at least two brightness attenuation values is greater than a preset threshold, perform at least two common display sub-screens according to the at least two brightness compensation values Brightness compensation.
  • the brightness compensation of the co-display sub-screen may not be performed. If the difference between the attenuation values is large, the brightness of the co-display sub-screens are compensated separately.
  • the preset threshold is set to 5% L, and if the brightness attenuation values of the three co-display sub-screens are 10% L, 12% L, and 13% L, respectively, no brightness compensation is performed on the co-display sub-screen. If the brightness attenuation values of the three co-display sub-screens are 10% L, 15% L, and 20% L, respectively, the brightness compensation is performed on the co-display sub-screen.
  • a foldable display device which includes a plurality of sub-screens 13, a processor 14, and a memory 15, the memory 15 stores a computer-readable program, which is implemented when the computer-readable program is executed by the processor 14.
  • a brightness compensation method provided by some embodiments of the invention is provided to ensure the uniformity of brightness when the foldable display device is unfolded.
  • brightness compensation is respectively performed on the at least two co-display sub-screens, so that the brightness difference between the at least two co-display sub-screens is within a preset range.
  • the foldable display device includes a memory that stores a mapping relationship between the cumulative usage time of the sub-screen and the brightness attenuation value; when the computer-readable program is executed by the processor, it is also implemented:
  • At least two brightness attenuation values corresponding to the at least two co-display sub-screens are determined.
  • mapping relationship and the initial brightness value of the multiple sub-screens are respectively the same.
  • At least two brightness compensation values corresponding to the at least two co-display sub-screens are determined.
  • the at least two brightness attenuation values have the same weight.
  • the brightness compensation value includes the compensation value of the driving voltage or the driving current of the at least two co-display sub-screens, and the driving voltage or the drive current is used to drive the at least two co-display sub-screens for brightness compensation;
  • the computer may
  • the reader program is also implemented when executed by the processor:
  • the foldable display device includes a plurality of bending portions and non-bending portions arranged at intervals, and the computer readable program is also implemented when executed by the processor:
  • the device in this embodiment and the method in the previous embodiment are based on two aspects under the same inventive concept.
  • the method implementation process has been described in detail in the foregoing, so those skilled in the art can clearly understand the For the sake of brevity of the description, the implementation process of the device in the embodiment will not be repeated here.
  • Some embodiments also provide a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., on which a computer-readable program is stored, and the computer-readable program is executed by a processor to implement the above method.
  • a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc.
  • the brightness compensation method, foldable display device and storage medium proposed above determine at least two brightness compensation values by detecting at least two brightness attenuation values corresponding to at least two co-display sub-screens in a co-display state, according to At least two brightness compensation values respectively perform brightness compensation on at least two co-display sub-screens, so that the brightness difference between the at least two co-display sub-screens is within a preset range, thereby controlling the consistency of the brightness of each sub-screen and ensuring The uniformity of brightness when the foldable display device is unfolded.

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  • Computer Hardware Design (AREA)
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  • Crystallography & Structural Chemistry (AREA)
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Abstract

La présente invention concerne un procédé de compensation de luminosité, un dispositif d'affichage pliable et un support de stockage. Le procédé de compensation de luminosité est appliqué au dispositif d'affichage pliable comprenant une pluralité de sous-écrans, la pluralité de sous-écrans ayant chacun une valeur de luminosité initiale lors d'une utilisation initiale. Ledit procédé comprend les étapes consistant à : détecter au moins deux valeurs de dégradation de luminosité correspondant à au moins deux sous-écrans de co-affichage dans un état de co-affichage, lesdits deux sous-écrans de co-affichage formant ensemble une même interface d'affichage ; déterminer, sur la base desdites deux valeurs de dégradation de luminosité, au moins deux valeurs de compensation de luminosité correspondant auxdits deux sous-écrans de co-affichage ; et réaliser une compensation de luminosité sur lesdits deux sous-écrans de co-affichage respectivement selon lesdites deux valeurs de compensation de luminosité, de façon à permettre à une différence de luminosité entre lesdits deux sous-écrans de co-affichage d'être dans une plage prédéfinie, ce qui permet de commander l'homogénéité de la luminosité des sous-écrans, et d'assurer l'uniformité de la luminosité des sous-écrans de co-affichage.
PCT/CN2019/070384 2019-01-04 2019-01-04 Procédé de compensation de luminosité, dispositif d'affichage pliable et support de stockage WO2020140254A1 (fr)

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Application Number Priority Date Filing Date Title
CN201980073423.7A CN113261051A (zh) 2019-01-04 2019-01-04 一种亮度补偿方法、可折叠显示装置及存储介质
PCT/CN2019/070384 WO2020140254A1 (fr) 2019-01-04 2019-01-04 Procédé de compensation de luminosité, dispositif d'affichage pliable et support de stockage
PCT/CN2019/075173 WO2020140313A1 (fr) 2019-01-04 2019-02-15 Procédé de compensation de luminosité, appareil d'affichage pliable et support d'informations
CN201980073111.6A CN113261050A (zh) 2019-01-04 2019-02-15 一种亮度补偿方法、可折叠显示装置及存储介质

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