CN111681587A - Display panel driving method and device and display device - Google Patents

Display panel driving method and device and display device Download PDF

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Publication number
CN111681587A
CN111681587A CN202010543546.7A CN202010543546A CN111681587A CN 111681587 A CN111681587 A CN 111681587A CN 202010543546 A CN202010543546 A CN 202010543546A CN 111681587 A CN111681587 A CN 111681587A
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CN
China
Prior art keywords
display
display area
aging
determining
brightness
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Pending
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CN202010543546.7A
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Chinese (zh)
Inventor
赵利军
盖翠丽
李洪瑞
孙光远
张成成
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Hefei Visionox Technology Co Ltd
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Hefei Visionox Technology Co Ltd
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Priority to CN202010543546.7A priority Critical patent/CN111681587A/en
Publication of CN111681587A publication Critical patent/CN111681587A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/03—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes specially adapted for displays having non-planar surfaces, e.g. curved displays
    • G09G3/035—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes specially adapted for displays having non-planar surfaces, e.g. curved displays for flexible display surfaces
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
    • G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
    • G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
    • G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/14—Display of multiple viewports
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/04—Maintaining the quality of display appearance
    • G09G2320/043—Preventing or counteracting the effects of ageing
    • G09G2320/046—Dealing with screen burn-in prevention or compensation of the effects thereof
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/06—Adjustment of display parameters
    • G09G2320/0686—Adjustment of display parameters with two or more screen areas displaying information with different brightness or colours
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2380/00—Specific applications
    • G09G2380/02—Flexible displays

Abstract

The embodiment of the invention discloses a display panel driving method and device and a display device. The driving method of the display panel comprises the following steps: determining a first aging parameter of the first display area and a second aging parameter of the second display area; determining an aging difference of the second display area and the first display area according to the first aging parameter and the second aging parameter; when the second display area needs to be subjected to aging compensation according to the aging difference, an illuminating lamp starting instruction is obtained; and when an illuminating lamp starting instruction is received, judging whether the second display area needs to display a user picture, and if the user picture does not need to be displayed, controlling the second display area to display a preset picture. The embodiment of the invention improves the display unevenness of the display panel.

Description

Display panel driving method and device and display device
Technical Field
Embodiments of the present invention relate to display technologies, and in particular, to a method and an apparatus for driving a display panel, and a display apparatus.
Background
With the advent of the 5G era, the demand of terminal users for information has increased explosively, the demand for various performances of mobile phones has changed, and consumers have increasingly high requirements for portability of display devices while pursuing larger size and higher definition display. The foldable display device is portable in small screen and efficient in large screen, and after the scheme of the foldable display device comes out, the conditions which seem to be contradictory can be 'handshaking', and the foldable display device has a natural wave.
However, the existing foldable display device is easy to have the problem of uneven display.
Disclosure of Invention
The invention provides a driving method and a driving device of a display panel and a display device, which are used for improving the display unevenness of the display panel.
In a first aspect, an embodiment of the present invention provides a method for driving a display panel, including:
the display panel comprises a first display area and a second display area;
determining a first aging parameter of the first display area and a second aging parameter of the second display area;
determining an aging difference of the second display area and the first display area according to the first aging parameter and the second aging parameter;
when the second display area needs to be subjected to aging compensation according to the aging difference, an illuminating lamp starting instruction is obtained;
and when an illuminating lamp starting instruction is received, judging whether the second display area needs to display a user picture, and if the user picture does not need to be displayed, controlling the second display area to display a preset picture.
Optionally, determining a first aging parameter of the first display area and a second aging parameter of the second display area includes:
acquiring first use time of the first display area, and determining the first aging parameter according to the first use time, wherein the first use time is the accumulated use time of the first display area;
and acquiring second use time of the second display area, and determining the second aging parameter according to the second use time, wherein the second use time is the accumulated use time of the second display area.
Optionally, determining a first aging parameter of the first display area and a second aging parameter of the second display area includes:
acquiring first display brightness when the first display area displays a set gray scale, and determining a first aging parameter of the first display area according to the first display brightness;
and acquiring second display brightness when the second display area displays a set gray scale, and determining a second aging parameter of the second display area according to the second display brightness.
Optionally, the first display brightness and the second display brightness are obtained by a brightness sensor disposed in the display panel.
Optionally, the display driving signal corresponding to the preset picture is greater than the display driving signal corresponding to the 255 gray scale.
Optionally, the preset picture is a white picture or a color pure-color picture.
Optionally, the second display area is a folding display area.
In a second aspect, an embodiment of the present invention further provides a driving apparatus for a display panel, where the display panel includes a first display area and a second display area;
the driving device includes:
the aging parameter determining module is used for determining a first aging parameter of the first display area and a second aging parameter of the second display area;
an aging difference determining module for determining an aging difference between the second display area and the first display area according to the first aging parameter and the second aging parameter;
the starting instruction acquisition module is used for acquiring a lighting lamp starting instruction when the second display area needs to be subjected to aging compensation according to the aging difference;
and the display driving module is used for judging whether the second display area needs to display the user picture or not when receiving an illuminating lamp starting instruction, and controlling the second display area to display a preset picture if the user picture does not need to be displayed.
In a third aspect, an embodiment of the present invention further provides a display device, including a display panel and a driving device of the display panel according to any embodiment of the present invention.
Optionally, the display device further includes:
a brightness sensor;
the brightness sensor is used for acquiring first display brightness of the first display area and second display brightness of the second display area.
According to the embodiment of the invention, when the user needs to turn on the illuminating lamp, the second display area is controlled to display the preset picture, and the second display area can be used for the illuminating lamp, so that on one hand, the display device is ensured to have a better illuminating effect, and on the other hand, the aging compensation can be carried out on the light emitting unit of the second display area, so that the aging degree of the second display area is close to that of the first display area, and the display unevenness of the display panel is improved.
Drawings
Fig. 1 is a flowchart of a driving method of a display panel provided in this embodiment;
fig. 2 is a schematic diagram of a display panel provided in this embodiment;
FIG. 3 is a schematic diagram illustrating the relationship between the luminous efficiency and the operating time of a display panel according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a driving apparatus of a display panel provided in this embodiment;
fig. 5 is a schematic diagram of a display device provided in this embodiment;
fig. 6 is a schematic cross-sectional view of a display device provided in this embodiment.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
As mentioned in the background art, the conventional foldable display device is prone to display unevenness, and the inventors have studied to find that the reason for this problem is: in the folding display device, the use frequency of the screen which can be bent to the back side is low, and the use frequency of the screen on the front side is high, so that the aging of the screen which is used frequently is fast, and the aging of the screen on the other part is slow, and the problem of uneven display of the whole display screen is caused.
Based on the above problem, the present embodiment provides the following solutions:
fig. 1 is a flowchart illustrating a driving method of a display panel provided in this embodiment, and fig. 2 is a schematic diagram illustrating a display panel provided in this embodiment, and referring to fig. 2, the display panel includes a first display area 10 and a second display area 20.
Referring to fig. 1 and 2, the method includes:
step 110, determining a first aging parameter of the first display area and a second aging parameter of the second display area.
The first display area 10 is a main screen display area of the display device, and the second display area 20 is a folding display area of the display device, wherein the folding display area can be folded to the back of the display device, i.e. to the non-light emitting side of the first display area 10. When a large screen needs to be displayed, the second display area 20 may be unfolded to display the screen together with the first display area 10, and when the second display area 20 is not needed to display the screen, the second display area 20 may be folded to the back of the display device.
In addition, the display panel may be an OLED display panel including a plurality of OLED light emitting units. The aging degree of the light-emitting material of the OLED light-emitting unit is gradually increased along with the increase of the service time, the aging degree is different, and the display brightness of the OLED light-emitting unit is different when the same driving signal is input. The first aging parameter and the second aging parameter characterize the degree of aging of the first display area 10 and the second display area 20. The display panel may include first, second, and third color light emitting units. The first aging parameter may include an aging parameter of the first color light emitting unit, an aging parameter of the second color light emitting unit, and an aging parameter of the third color light emitting unit in the first display region. The second aging parameters may include an aging parameter of the first color light emitting unit, an aging parameter of the second color light emitting unit, and an aging parameter of the third color light emitting unit in the second display region.
The first aging parameter may be determined according to the usage time of the first display area 10, or according to the display brightness of the first display area 10, or may be determined by combining the usage time and the display brightness of the first display area 10. The second aging parameter may be determined according to the usage time of the second display area 20, or according to the display brightness of the second display area 20, or may be determined by combining the usage time and the display brightness of the second display area 10.
And 120, determining the aging difference of the second display area and the first display area according to the first aging parameter and the second aging parameter.
And step 130, when the second display area needs aging compensation according to the aging difference, acquiring an illuminating lamp starting instruction.
Specifically, when the aging difference between the second display area 20 and the first display area 10 is large, the display brightness of the first display area 10 and the second display area 20 may be greatly different, which affects the display effect. For example, when the aging difference is greater than the set difference value, it is determined that the second display area 20 needs to be aging-compensated. The set difference value may be determined according to the characteristics of the light emitting unit in the display panel using the organic material and the display requirements of the display panel, which is not specifically limited in this embodiment. The lighting lamp opening instruction is an instruction for opening a lighting lamp of the display device, and when a user clicks a lighting lamp opening button of the user interface, the system can send the lighting lamp opening instruction. When the second display area 20 needs to perform aging compensation, the lighting lamp turn-on instruction can be detected in real time, and when the lighting lamp turn-on instruction is received, it indicates that the user needs to turn on the lighting lamp.
And 140, judging whether the second display area needs to display the user picture or not when receiving the lighting lamp starting instruction, and controlling the second display area to display the preset picture if the user picture does not need to be displayed.
Specifically, it may be determined whether the second display area needs to display the user picture by detecting the bending state of the display panel, for example, when the second display area 20 is bent to the back of the display panel, it is determined that the second display area 20 does not need to display the user picture. The preset display frame can be a color frame or a white frame.
In the embodiment, when the user needs to turn on the illumination lamp, the second display area 20 is controlled to display the preset picture, and the second display area 20 can be used as the illumination lamp, so that on one hand, the display device is ensured to have a better illumination effect, on the other hand, the aging compensation can be performed on the light emitting unit of the second display area 20, the aging degree of the second display area 20 and the aging degree of the first display area 10 are close, and the display unevenness of the display panel is improved.
It should be noted that, this embodiment only exemplarily shows that the display panel includes the first color light-emitting unit, the second color light-emitting unit, and the third color light-emitting unit, and the present invention is not limited thereto.
Optionally, the preset picture is a white picture or a color pure color picture.
Specifically, the color pure color picture may be a first color picture, a first color picture or a third color picture, or may be a mixed color picture of a first color and a second color, a mixed color picture of a first color and a third color, or a mixed color picture of a second color and a third color. The display of the color picture is beneficial to improving the visual experience of a user, and when the aging differences of the light-emitting units with different colors in the first display area and the second display area are different, the aging compensation of the light-emitting units with different colors can be respectively carried out to different degrees by displaying the color picture. For example, when the aging degree of the first color light emitting unit of the second display area is close to that of the first color light emitting unit of the first display area, and the aging degree of the second color light emitting unit is close to that of the first color light emitting unit, and the first color light emitting unit and the second color light emitting unit of the second display area do not need aging compensation, the second display area may be controlled to display a third color picture, and the aging compensation is performed on the third color light emitting unit.
In addition, the first color light-emitting unit, the second color light-emitting unit and the third color light-emitting unit emit light when a white picture is displayed, so that the three light-emitting units can be aged simultaneously, and the aging time is saved.
It should be noted that the specific type of the preset frame may be set according to the user requirement, and this embodiment is not limited in particular.
Optionally, determining a first aging parameter of the first display area and a second aging parameter of the second display area includes:
acquiring first use time of the first display area, and determining the first aging parameter according to the first use time, wherein the first use time is the accumulated use time of the first display area;
and acquiring second use time of the second display area, and determining the second aging parameter according to the second use time, wherein the second use time is the accumulated use time of the second display area.
The first use time may be an accumulated screen display time of the first display area from the factory shipment of the display panel, and the second use time may be an accumulated screen display time of the second display area from the factory shipment of the display panel. The first usage time and the second usage time may be determined by a timer disposed on the display panel, or may be determined by an internal program of the driver chip, which is not specifically limited in this embodiment.
Specifically, the aging degree of the OLED light-emitting unit is positively correlated with the usage time of the OLED light-emitting unit, and the aging degree is increased as the usage time is longer. The first aging parameter may be determined according to a product of the first usage time and the first aging coefficient, and the second aging parameter may be determined according to a product of the second usage time and the second aging coefficient. The first aging coefficient and the second aging coefficient may be determined according to the light emitting material adopted by the OLED light emitting unit, driving data of the OLED light emitting unit, and the like.
Further, the first usage time may include a cumulative usage time of the first color light emitting unit, a cumulative usage time of the second color light emitting unit, and a cumulative usage time of the third color light emitting unit. A first aging difference of the first color light emitting units of the two display regions may be determined according to an accumulated usage time of the first color light emitting units in the first display region and an accumulated usage time of the first color light emitting units in the second display region, a second aging difference of the second color light emitting units may be determined according to an accumulated usage time of the second color light emitting units in the first display region and an accumulated usage time of the second color light emitting units in the second display region, and a third aging difference of the third color light emitting units may be determined according to an accumulated usage time of the third color light emitting units in the first display region and an accumulated usage time of the third color light emitting units in the second display region. The light emitting units in the second display area may be aging-compensated according to the aging differences of the three light emitting units, for example, when the first aging difference and the second aging difference are smaller and the third aging difference is larger, the second display area may be controlled to display a third color picture to age-compensate the third color light emitting units.
Fig. 3 is a schematic diagram illustrating a relationship between luminous efficiency and a use time of a display panel according to an embodiment of the present disclosure, where referring to fig. 3, S1 is a relationship between luminous efficiency and a use time of a first display region, S2 is a relationship between luminous efficiency and a use time of a second display region, and referring to fig. 3, the first display region and the second display region gradually age with an increase in use time, and the luminous efficiency decreases. And in the period from T0 to T1, the full screen is displayed, and the change of the full screen luminous efficiency K is the same. In the period from T1 to T5, the screen body is folded, the second display area which is bent to the back side does not display, the OLED light-emitting unit in the first display area continues to age, and the light-emitting efficiency K continues to decline. And at the stage T1 to T2, no picture is displayed in the second display area, and the luminous efficiency K of the OLED luminous unit is unchanged. And at the stage from T2 to T3, the lighting lamp starting instruction is obtained, the second display area is used as light for display, under the condition of larger driving current, the aging speed of the OLED light-emitting unit is higher, and the light-emitting efficiency K is reduced more quickly. T3 to T4, the second display area displays no picture. And in the stage from T4 to T5, the lighting lamp starting instruction is obtained, the second display area is used as light for displaying, and the luminous efficiency K is rapidly reduced. When the aging difference of the first display area and the second display area is close, the second display area is no longer displayed as light. When the user display screen is not displayed in the second display area, the second display area is used as lamplight for displaying, so that the aging degree of the second display area is close to that of the first display area, and uneven display of the display panel caused by different aging degrees is improved.
Optionally, determining a first aging parameter of the first display area and a second aging parameter of the second display area includes:
acquiring first display brightness when a first display area displays a set gray scale, and determining a first aging parameter of the first display area according to the first display brightness;
and acquiring second display brightness when the second display area displays the set gray scale, and determining a second aging parameter of the second display area according to the second display brightness.
The set gray level may be the maximum display gray level of the display panel, for example, 255 gray levels, or any gray level, and this embodiment is not limited in detail. The first display brightness may be an average brightness of the first display region, and the second display brightness may be an average brightness of the second display region. The first display luminance may include luminance of the first color light emitting unit, luminance of the second color light emitting unit, and luminance of the third color light emitting unit in the first display region. The first display brightness may also be white light brightness when the first display area displays a white image, and this embodiment is not limited in particular. The second display luminance may include luminance of the first color light emitting unit, luminance of the second color light emitting unit, and luminance of the third color light emitting unit in the second display region. The second display brightness may also be white light brightness when the second display area displays a white image, and this embodiment is not limited in particular.
Specifically, the first display brightness may be multiplied by a first setting coefficient to determine a first aging parameter, and the second display brightness may be multiplied by a second setting coefficient to determine a second aging parameter, where the first setting coefficient and the second setting coefficient may be 1, or may be determined according to a simulation experiment, and the embodiment is not limited specifically. The aging degree of the OLED light-emitting units in the OLED display panel is directly related to the light-emitting efficiency, and the light-emitting efficiency directly influences the light-emitting brightness, so that the display brightness of the OLED light-emitting units can directly reflect the aging degree. According to the embodiment, the first aging parameter of the first display area is determined according to the first display brightness, the second aging parameter of the second display area is determined according to the second display brightness, the aging degree of the display panel can be well reflected, meanwhile, complex calculation is not needed, and the calculation difficulty is reduced.
Further, a fourth aging difference of the first color light emitting units of the two display regions may be determined according to the luminance of the first color light emitting units in the first display region and the luminance of the first color light emitting units in the second display region, a fifth aging difference of the second color light emitting units may be determined according to the luminance of the second color light emitting units in the first display region and the luminance of the second color light emitting units in the second display region, and a sixth aging difference of the third color light emitting units may be determined according to the luminance of the third color light emitting units in the first display region and the luminance of the third color light emitting units in the second display region. The aging compensation can be performed on the light emitting units in the second display area according to the aging differences of the three light emitting units, for example, when the fourth aging difference and the fifth aging difference are large and need to be compensated, the second display area can be controlled to display the mixed color picture of the first color and the second color for aging compensation.
Optionally, the first display brightness and the second display brightness are obtained by a brightness sensor disposed in the display panel.
Specifically, a brightness sensor may be disposed in the display panel, and the brightness sensor may be disposed at the light emitting side of the OLED light emitting unit, for example, in the encapsulation layer, or at the side of the encapsulation layer away from the light emitting unit.
Optionally, the display driving signal corresponding to the preset picture is greater than the display driving signal corresponding to the 255 gray scale.
Specifically, as the driving current is larger, the aging degree of the OLED light-emitting unit is faster, and the display driving signal corresponding to the preset picture is set to be larger than the display driving signal corresponding to the 255 gray scale, so that the second display area has a faster aging speed, and can be faster and closer to the aging degree of the first display area.
Fig. 4 is a schematic diagram of a driving apparatus of a display panel provided in this embodiment, where the display panel includes a first display area and a second display area; referring to fig. 4, the driving apparatus includes:
an aging parameter determining module 210 for determining a first aging parameter of the first display area and a second aging parameter of the second display area;
an aging difference determining module 220, configured to determine an aging difference between the second display area and the first display area according to the first aging parameter and the second aging parameter;
a turn-on instruction obtaining module 230, configured to obtain an illumination lamp turn-on instruction when it is determined that the second display area needs to be subjected to aging compensation according to the aging difference;
the display driving module 240 is configured to determine whether the second display area needs to display a user picture when receiving an illumination lamp turning-on instruction, and control the second display area to display a preset picture if the user picture does not need to be displayed.
The driving device of the display panel may be a driving chip.
Optionally, the aging parameter determining module 210 includes:
the first parameter determining unit is used for acquiring first use time of the first display area and determining the first aging parameter according to the first use time;
and the second parameter determining unit is used for acquiring the second use time of the second display area and determining the second aging parameter according to the second use time.
Optionally, the aging parameter determining module 210 includes:
the third parameter determining unit is used for acquiring first display brightness when the first display area displays a set gray scale and determining a first aging parameter of the first display area according to the first display brightness;
and the fourth parameter determining unit is used for acquiring second display brightness when the second display area displays the set gray scale, and determining a second aging parameter of the second display area according to the second display brightness.
Optionally, the first display brightness and the second display brightness are obtained by a brightness sensor disposed in the display panel.
Optionally, the display driving signal corresponding to the preset picture is greater than the display driving signal corresponding to the 255 gray scale.
Optionally, the preset picture is a white picture or a color pure-color picture.
Optionally, the second display area is a folding display area.
The driving apparatus for a display panel according to this embodiment may perform the driving method for a display panel according to any embodiment of the present invention, and belongs to the same inventive concept as the driving method for a display panel according to any embodiment of the present invention.
The present embodiment further provides a display device, fig. 5 is a schematic diagram of the display device provided in the present embodiment, and referring to fig. 5, the display device 100 includes a display panel 200 and a driving device 300 of the display panel according to any embodiment of the present invention.
Fig. 6 is a schematic cross-sectional view of a display device provided in this embodiment, and referring to fig. 6, the display device further includes:
a luminance sensor 14;
the brightness sensor 14 is used for acquiring a first display brightness of the first display area 10 and a second display brightness of the second display area 20.
Specifically, the display device may include a substrate 11, a light emitting unit 12 disposed on the substrate 11, and an encapsulation layer 13 covering the light emitting unit 12. The luminance sensor 14 may be disposed at the light emitting side of the light emitting unit 12, i.e., at the side of the light emitting unit 12 away from the substrate 11. For example, in the encapsulation layer 13, or on a side of the encapsulation layer 13 away from the light emitting unit 12. In addition, the vertical projection of the luminance sensor 14 on the substrate 11 and the vertical projection of the light-emitting unit 12 on the substrate do not overlap, so as to avoid affecting the light emission of the light-emitting unit 12. In addition, corresponding luminance sensors 14 may be provided in the first display area 10 and the second display area 20, respectively.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (10)

1. A method of driving a display panel, comprising:
the display panel comprises a first display area and a second display area;
determining a first aging parameter of the first display area and a second aging parameter of the second display area;
determining an aging difference of the second display area and the first display area according to the first aging parameter and the second aging parameter;
when the second display area needs to be subjected to aging compensation according to the aging difference, an illuminating lamp starting instruction is obtained;
and when an illuminating lamp starting instruction is received, judging whether the second display area needs to display a user picture, and if the user picture does not need to be displayed, controlling the second display area to display a preset picture.
2. The method of claim 1, wherein determining a first aging parameter for the first display region and a second aging parameter for the second display region comprises:
acquiring first use time of the first display area, and determining the first aging parameter according to the first use time, wherein the first use time is the accumulated use time of the first display area;
and acquiring second use time of the second display area, and determining the second aging parameter according to the second use time, wherein the second use time is the accumulated use time of the second display area.
3. The method of claim 1, wherein determining a first aging parameter for the first display region and a second aging parameter for the second display region comprises:
acquiring first display brightness when the first display area displays a set gray scale, and determining a first aging parameter of the first display area according to the first display brightness;
and acquiring second display brightness when the second display area displays a set gray scale, and determining a second aging parameter of the second display area according to the second display brightness.
4. The method of claim 3, wherein:
and acquiring the first display brightness and the second display brightness through a brightness sensor arranged in a display panel.
5. The method of claim 1, wherein:
the display driving signal corresponding to the preset picture is larger than the display driving signal corresponding to the 255 gray scale.
6. The method of claim 1, wherein:
the preset picture is a white picture or a color pure color picture.
7. The method of claim 1, wherein:
the second display area is a folding display area.
8. A driving apparatus of a display panel, characterized in that:
the display panel comprises a first display area and a second display area;
the driving device includes:
the aging parameter determining module is used for determining a first aging parameter of the first display area and a second aging parameter of the second display area;
an aging difference determining module for determining an aging difference between the second display area and the first display area according to the first aging parameter and the second aging parameter;
the starting instruction acquisition module is used for acquiring a lighting lamp starting instruction when the second display area needs to be subjected to aging compensation according to the aging difference;
and the display driving module is used for judging whether the second display area needs to display the user picture or not when receiving an illuminating lamp starting instruction, and controlling the second display area to display a preset picture if the user picture does not need to be displayed.
9. A display device characterized by comprising a display panel and a driving device of the display panel according to claim 8.
10. The display device according to claim 9, further comprising:
a brightness sensor;
the brightness sensor is used for acquiring first display brightness of the first display area and second display brightness of the second display area.
CN202010543546.7A 2020-06-15 2020-06-15 Display panel driving method and device and display device Pending CN111681587A (en)

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