CN111724732B - Electronic device and control method of display device - Google Patents

Electronic device and control method of display device Download PDF

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Publication number
CN111724732B
CN111724732B CN202010556189.8A CN202010556189A CN111724732B CN 111724732 B CN111724732 B CN 111724732B CN 202010556189 A CN202010556189 A CN 202010556189A CN 111724732 B CN111724732 B CN 111724732B
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Prior art keywords
display area
brightness
display
value
optical module
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CN111724732A (en
Inventor
李志林
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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Guangdong Oppo Mobile Telecommunications Corp Ltd
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    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—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
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0233—Improving the luminance or brightness uniformity across the screen
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00—Aspects of the architecture of display systems
    • G09G2360/14—Detecting light within display terminals, e.g. using a single or a plurality of photosensors
    • G09G2360/145—Detecting light within display terminals, e.g. using a single or a plurality of photosensors the light originating from the display screen

Abstract

The embodiment of the application provides electronic equipment and a control method of a display device, wherein the electronic equipment comprises the display device, an optical module and a processor, the display device comprises a first display area and a second display area which are adjacent, and the light transmittance of the first display area is greater than that of the second display area; the optical module is arranged on one side of the display device and at least partially arranged opposite to the first display area, and the optical module is used for acquiring the brightness value of the first display area; the display device and the optical module are connected with the processor, the processor acquires the brightness value of the first display area through the optical module, acquires a first brightness difference value of the first display area and the second display area, and adjusts at least one of first driving power of the first display area and second driving power of the second display area according to the first brightness difference value, the adjusted first display area and the adjusted second display area have a second brightness difference value, and the second brightness difference value is smaller than the first brightness difference value. The brightness difference between the first display area and the second display area is improved.

Description

Electronic device and control method of display device
Technical Field
The present disclosure relates to electronic technologies, and in particular, to a method for controlling an electronic device and a display device.
Background
With the development of communication technology, electronic devices such as smart phones are becoming more and more popular. In the using process of the electronic equipment, the electronic equipment can display the picture by using the display screen of the electronic equipment.
For better display effect and user experience, set up leading module of making a video recording at the display screen back, the display screen corresponds leading module of making a video recording and sets up the printing opacity display area, and the display screen has been except that the region outside the printing opacity display area is normal display area. The front-mounted camera module acquires an external optical signal passing through the light-transmitting display area to form an image, and the light-transmitting display area can also display an image, so that a display screen of a comprehensive screen is realized, and the requirement of front-mounted camera shooting is met. In order to make the display of the display screen uniform, the brightness of the transparent display area and the normal display area are the same or similar, but because the structures of the transparent display area and the normal display area are different, the brightness attenuation conditions of the transparent display area and the normal display area are different, and the brightness difference between the transparent display area and the normal display area is larger and larger.
Disclosure of Invention
The embodiment of the application provides electronic equipment and a control method of a display device, which can solve the problem of poor brightness of different areas of the display device.
An embodiment of the present application provides an electronic device, which includes:
the display device comprises a first display area and a second display area which are adjacent, wherein the light transmittance of the first display area is greater than that of the second display area;
the optical module is arranged on one side of the display device and at least partially arranged opposite to the first display area, and the optical module is used for acquiring the brightness value of the first display area; and
the processor acquires the brightness value of the first display area through the optical module, acquires a first brightness difference value of the first display area and the second display area, and adjusts at least one of first driving power of the first display area and second driving power of the second display area according to the first brightness difference value, wherein the adjusted first display area and the adjusted second display area have a second brightness difference value, and the second brightness difference value is smaller than the first brightness difference value.
The embodiment of the application also provides a control method of the display device, which is applied to electronic equipment, wherein the electronic equipment comprises the display device and an optical module, the display device comprises a first display area and a second display area which are adjacent, the light transmittance of the first display area is greater than that of the second display area, and the optical module is arranged on one side of the display device and at least partially opposite to the first display area; the method comprises the following steps:
acquiring the brightness value of the first display area through the optical module;
acquiring a brightness value of the second display area, and acquiring a first brightness difference value of the first display area and the second display area; and
and adjusting at least one of first driving power of the first display area and second driving power of the second display area according to the first brightness difference value, wherein the adjusted first display area and the adjusted second display area have a second brightness difference value, and the second brightness difference value is smaller than the first brightness difference value.
In the embodiment of the application, the display device comprises a first display area and a second display area with different light transmittances, for the display device to display uniformly on the whole, the display brightnesses of the first display area and the second display area are the same or similar, but the light transmittances of the first display area and the second display area are different, namely the structures are different, so that the brightness attenuation situations of the first display area and the second display area are different, and after the display device is used for a period of time, the brightness difference of the first display area and the second display area is larger and larger. The processor can acquire the brightness value of the first display area through the optical module, then acquire the first brightness difference value of the first display area and the second display area, and then adjust the first driving power of the first display area and/or adjust the second driving power of the second display area according to the first brightness value, so that the second brightness difference value of the adjusted first display area and the second display area is smaller than the first brightness difference value, and the brightness difference of the first display area and the second display area is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly introduced below.
Fig. 1 is a first structural schematic diagram of an electronic device according to an embodiment of the present application.
Fig. 2 is a second schematic structural diagram of an electronic device according to an embodiment of the present application.
Fig. 3 is a schematic diagram of a display device of the electronic device shown in fig. 2.
Fig. 4 is a partially enlarged view of the portion X shown in fig. 3.
Fig. 5 is a third schematic structural diagram of an electronic device according to an embodiment of the present application.
Fig. 6 is a scene schematic diagram of an electronic device and another electronic device provided in an embodiment of the present application.
Fig. 7 is a fourth schematic structural diagram of an electronic device according to an embodiment of the present application.
Fig. 8 is a schematic view illustrating a first display area of an electronic device and a camera module according to an embodiment of the present application.
Fig. 9 is a schematic view of a stacked structure of a first display region of a display device according to an embodiment of the present application.
Fig. 10 is a flowchart illustrating a control method of a display device according to an embodiment of the present application.
Fig. 11 is another schematic flowchart of a control method of a display device according to an embodiment of the present disclosure.
Detailed Description
The embodiment of the application provides an electronic device, and electronic device can include display device and functional module, and the functional module can see through display device and send optical signal and/or receive light transmission display device's optical signal. It can be understood that the conventional display device has a low light transmittance, and the functional module has a poor effect of transmitting and/or receiving optical signals through the display device. Therefore, the display device can be arranged in a partitioned manner, for example, the light transmittance of the display device corresponding to the functional module is set to be greater than that of the other parts of the display device, so that the effect of transmitting and/or receiving optical signals through the display device can be improved. The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.
The electronic device provided by the embodiment of the application can be a mobile terminal device such as a mobile phone and a tablet personal computer, and can also be a device with a display device such as a game device, an Augmented Reality (AR) device, a Virtual Reality (VR) device, an on-vehicle computer, a notebook computer, a data storage device, an audio playing device, a video playing device and a wearable device, wherein the wearable device can be an intelligent bracelet and intelligent glasses.
For convenience of understanding, the electronic device is exemplified as a mobile phone. Specifically, referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure. The electronic device 10 includes a display device 20, the display device 20 includes a first display area 220 and a second display area 240 adjacent to each other, and a light transmittance of the first display area 220 is greater than a light transmittance of the second display area 240. The electronic device 10 is provided with a function module 60 therein, at least a portion of the function module 60 is disposed opposite to the first display area 220, and the function module 60 is configured to transmit and/or receive an optical signal through the first display area 220. It can also be understood that the function module 60 is disposed below the first display area 220 of the display device 20, and the function module 60 is used for transmitting and/or receiving the optical signal through the first display area 220 of the display device 20. The display area of the display device 20 is complete, a light-transmitting channel which cannot be displayed is not arranged due to the functional module 60, the screen ratio of the display device 20 is improved, a real full-screen can be understood, and images can be displayed in a full-screen mode. The functional module 60 can be set up as required, for example, the functional module 60 module can be at least one of a camera module, an infrared sensor, a laser sensor, a proximity sensor, a distance sensor, a structured light module, a Time of flight (TOF) lens module, and the like.
In order to make the overall display of the display device 20 uniform, the display luminances of the first display area 220 and the second display area 240 with different transmittances are the same or similar, but the transmittance of the first display area 220 is different from that of the second display area 240, i.e., the transmittance is different from that of the second display area 240, so that the luminance attenuation conditions of the first display area 220 and the second display area 240 are different, and the luminance difference between the first display area 220 and the second display area 240 is larger and larger after the display device 20 is used for a period of time. To solve the above problem, an embodiment of the present application provides the following structure, and specifically please refer to fig. 2, where fig. 2 is a schematic diagram of a second structure of an electronic device according to an embodiment of the present application. The electronic device 10 further includes a processor 280, the processor 280 is connected to the display device 20, the processor 280 may obtain a first luminance difference value between the first display area 220 and the second display area 240, and adjust at least one of a first driving power of the first display area 220 and a second driving power of the second display area 240 according to the first luminance difference value, where the adjusted first display area 220 and the adjusted second display area 240 have a second luminance difference value, and the second luminance difference value is smaller than the first luminance difference value.
The processor 280 may first obtain the luminance of the first display area 220 and the luminance of the second display area 240, then obtain a first luminance difference value between the first display area 220 and the second display area 240, and then adjust the first driving power of the first display area 220 and/or the second driving power of the second display area 240 according to the first luminance difference value, so that the adjusted second luminance difference value between the first display area 220 and the second display area 240 is smaller than the first luminance difference value, thereby improving the luminance difference between the first display area 220 and the second display area 240.
It should be noted that the light transmittance of the first display region 220 is greater than that of the second display region 240, and various structures can be adopted.
Illustratively, because the pixels in the display device are not all over a layer, a gap is formed between two pixels, the gap is filled with a material with higher light transmittance, and each pixel needs to be driven by a corresponding driving unit, which includes a non-light-transmissive thin film transistor, the pixel distribution density is smaller, and the corresponding light transmittance is higher. Therefore, the light transmittance of the first display region may be greater than that of the second display region by the pixel distribution density. Specifically, referring to fig. 3 and 4, fig. 3 is a schematic diagram of a display device of the electronic apparatus shown in fig. 2, and fig. 4 is a partial enlarged view of a portion X shown in fig. 3. The first display region 220 includes a plurality of first pixels 2262, the second display region 240 includes a plurality of second pixels 242, and the distribution density of the first pixels 2262 is less than that of the second pixels 242. If the brightness difference between the first display area 220 and the second display area 240 is large, the display device 20 has a significant brightness difference, which affects the display effect. Therefore, it is necessary to set the brightness of the first display area 220 and the brightness of the second display area 240 to be the same or similar, but the distribution density of the first pixels 2262 of the first display area 220 is smaller than the distribution density of the second pixels 242 of the second display area 240, and it can also be understood that the number of the first pixels 2262 in a unit area is smaller than the number of the second pixels 242, and in order to make the brightness of the first display area 220 and the brightness of the second display area 240 to be the same or similar, it is necessary to increase the light emitting brightness of a single first pixel 2262, that is, the driving power of a first pixel 2262 is greater than the driving power of a second pixel 242. However, due to the characteristics of the pixel material, the light emitting luminance of the first pixel 2262 and the second pixel 242 gradually decreases with the use time. The first pixel 2262 and the second pixel 242 have different driving powers and different light emitting intensities, and the luminance decay curves, i.e., the lifetime decay rates, of the first pixel 2262 and the second pixel 242 are also different. At the beginning, the driving power of the first pixel 2262 and the second pixel 242 may be adjusted to make the brightness of the first display area 220 and the second display area 240 the same or approximately the same, but as the usage time of the first display area 220 and the second display area 240 increases, the attenuation of the first pixel 2262 and the second pixel 242 is different, so that the brightness difference of the first display area 220 and the second display area 240 becomes larger and larger.
It should be noted that the light transmittance of the first display area may be higher than that of the second display area, and may also be implemented by using other structures, for example, the second display area further includes a reflective layer, and the reflective layer may reflect the optical signal emitted by the second pixel. The first display region may improve light transmittance by not providing a reflective layer, but requires the first pixel to emit a light signal with higher luminance than the second pixel to compensate for a luminance loss caused by not providing an emissive layer. Therefore, any structure that can make the light transmittance of the first display region larger than that of the second display region is within the scope of the embodiments of the present application.
It can be understood that, if the adjusted luminance values of the first display area 220 and the second display area 240 are smaller than the preset threshold, the luminance difference between the first display area 220 and the second display area 240 can be substantially eliminated, or the luminance difference between the first display area 220 and the second display area 240 can not be seen by the user, so as to improve the display uniformity of the display device 20. The preset threshold may be set as needed, and the preset threshold may be set as long as the brightness difference between the first display area 220 and the second display area 240 is not visible to the user, and the preset threshold may be 5% or 3% of the maximum brightness value of the first display area 220 or the second display area 240. The predetermined threshold may also be a fixed value, such as 20 nit (nit) or 30 nit (nit). Of course, it can be understood that the adjusted brightness values of the first display area 220 and the second display area 240 may be equal, that is, there is no brightness difference between the first display area 220 and the second display area 240, and the display effect of the display device is the best. The brightness of the first display area can be obtained through an optical module of the electronic device. Specifically, please refer to fig. 5, wherein fig. 5 is a third structural schematic diagram of an electronic device according to an embodiment of the present disclosure. The electronic device 10 further includes an optical module 262, the optical module 262 is disposed at one side of the display device 20 and at least partially disposed opposite to the first display area 220, the optical module 262 is configured to obtain a brightness value of the first display area 220, and the processor 280 obtains the brightness value of the first display area 220 through the optical module 262.
The optical module 262 is disposed on one side of the display device 20, it is also understood that the optical module 262 is disposed under the display device 20, and the optical module 262 can directly collect the brightness value of the first display area 220. For example, the optical module 262 may be a device dedicated to collecting the brightness value of the first display area 220, such as the optical module 262 is a brightness sensor. The optical module 262 may also be a device for multiplexing the brightness values of the first display area 220. If optical module 262 is the module of making a video recording, the module of making a video recording mainly used obtains the external light signal formation of image that passes through first display area 220, can multiplex the luminance value of gathering first display area 220 simultaneously.
It should be noted that the brightness value of the first display area collected by the optical module is not equal to the light-emitting value of the first display area measured by the external instrument. Therefore, the light emitting direction of the first pixel of the first display area faces the outside, the optical module is arranged on the side, facing the inside, of the first pixel, the brightness value of the first display area collected by the optical module and the light emitting value of the first display area measured by an external instrument have differences, but the differences are fixed, and the conversion relation between the two can be obtained in advance, so that the other can be obtained by combining one conversion relation.
While the optical module 262 is shown as a brightness sensor in the embodiment of the present invention, in other embodiments, the optical module 262 can be a camera module, such as the functional module shown in FIG. 2.
The processor may obtain the brightness value of the second display area in various ways.
Illustratively, the processor obtains a second usage duration of the second display area and a second brightness attenuation curve corresponding to the second display area, and calculates a brightness value of the second display area according to the second usage duration and the second brightness attenuation curve. The second display area is a normal display area and has a second brightness decay curve of the use time length and the brightness, and the brightness obtained by the same second driving power after the second display area is used for a long time or the brightness is the percentage of the initial brightness can be calculated through the second brightness decay curve, so that the processor can calculate the current brightness value of the second display area according to the second use time length of the second display area and the second brightness decay curve.
In another example, please refer to fig. 6, and fig. 6 is a schematic view of a scene of an electronic device and another electronic device provided in the embodiment of the present application. The processor 280 may obtain the brightness value of the second display area 240 through the optical module 920 of the other electronic device 90. Specifically, the optical module 920 of the other electronic device 90 collects the brightness value of the second display area 240, and then the electronic device 10 obtains the brightness value of the second display area 240 through the other electronic device 90 by wireless transmission or other transmission methods. The optical module of the other electronic device can be one of a front camera module, a rear camera module, a light sensor and the like.
In another example, please refer to fig. 7, and fig. 7 is a fourth structural diagram of an electronic device according to an embodiment of the present application. The electronic device 10 further includes a photosensitive module 264, the photosensitive module 264 is disposed on one side of the display device 20 and at least partially disposed opposite to the second display area 240, the photosensitive module 264 is used for obtaining a brightness value of the second display area 240, and the processor 280 obtains the brightness value of the second display area 240 through the photosensitive module 264. The photosensitive module 264 is only used for obtaining the brightness value of the second display area 240, the photosensitive module 264 may be a device with a small volume, and the photosensitive module 264 may be disposed at the edge of the second display area 240 or other configurations. For example, the light sensing module 264 may be disposed adjacent to the first display area 220, and a part of the second display area 240 adjacent to the first display area 220 is set as a light transmitting area, so that a part of the light signals emitted by the second pixels in the second display area 240 may also be transmitted to the light sensing module 264, and the brightness value of the second display area 240 is calculated according to the light signals collected by the light sensing module 264.
It should be noted that, after the processor obtains the luminance value of the first display area and the luminance value of the second display area, only the first driving power of the first display area may be adjusted, so that the adjusted luminance values of the first display area and the second display area are smaller than the preset threshold. Considering that if the brightness attenuation of the second display area is relatively small, the second driving power of the second display area may not be adjusted, but only the first driving power of the first display area may be adjusted, and the amount of data calculated by the processor is relatively small, so that the brightness of the first display area and the brightness of the second display area may be better made to be the same or similar.
Or only adjusting the second driving power of the second display area, so that the brightness values of the adjusted first display area and the second display area are smaller than the preset threshold. The first driving power of the first display area is not adjusted, and only the second driving power of the second display area is adjusted.
The first driving power of the first display area and the second driving power of the second display area can be adjusted, so that the brightness values of the adjusted first display area and the adjusted second display area are smaller than a preset threshold value. Illustratively, the processor adjusts the second driving power of the second display area according to the second brightness decay curve, and the processor adjusts the first driving power of the first display area according to the adjusted display brightness of the second display area, so that the brightness values of the adjusted first display area and the adjusted second display area are smaller than the preset threshold value. The adjusted first display area and the second display area can reach or approach the brightness in the initial state.
In another example, the second driving power of the second display area may be adjusted to meet the requirement. In consideration of the actual situation or in order to prolong the service life of the second display area, the display brightness of the adjusted second display area may not need to cause the display brightness in the initial state, the display brightness of the adjusted second display area is a preset proportion of the display brightness in the initial state, such as 98% or 95%, the preset proportion may be a fixed value, or may be a dynamic value and has an inverse proportion relation with the service life of the second display area, that is, the longer the service life of the second display area is, the smaller the preset proportion is. And then, based on the adjusted display brightness of the second display area, adjusting the first driving power of the first display area so that the brightness values of the adjusted first display area and the second display area are smaller than a preset threshold value. The display brightness of the second display area can be smaller than the display brightness in the initial state after adjustment, the first driving power does not need to be adjusted to be very large, the display brightness required to be achieved by the first display area is easier to achieve, the power consumption of the first display area and the power consumption of the second display area can be effectively reduced, the service life of the first display area is prolonged, the brightness of the first display area and the brightness of the second display area are easier to be smaller than a preset threshold value, the use is not easy to occur for a period of time, and the first display area cannot reach the brightness of the second display area all the time due to the attenuation of the first pixels of the first display area.
Of course, in some other examples, the processor may further adjust the first driving power of the first display area first, and then adjust the second driving power of the second display area according to the adjusted display brightness of the first display area, so that the adjusted brightness values of the first display area and the second display area are smaller than the preset threshold. The specific manner of adjusting the first driving power and the second driving power may refer to the adjustment manner of the above embodiments, and is not described herein again.
It should be noted that the first driving power and the second driving power in the above embodiments may be driving currents or driving voltages.
It can be understood that the optical module in any of the above embodiments may be a camera module, please refer to fig. 8, and fig. 8 is a schematic diagram illustrating a cooperation between the first display area of the electronic device and the camera module according to the embodiment of the present disclosure. The camera module 620 includes a lens 622, the lens 622 is disposed toward the first display area 220, and the camera module 620 can be used to acquire an external optical signal passing through the first display area 220 for imaging and multiplexing to acquire a brightness value of the first display area 220.
It should be noted that one camera module or a plurality of camera modules can be arranged below the first display area. A plurality of modules of making a video recording can be for the module of making a video recording of mutually supporting, like two the same modules of making a video recording, a module of making a video recording and blurring make a video recording module or black and white make a video recording module etc. first display area below can also set up other functional device except that setting up the module of making a video recording, like proximity sensor, light sensor, distance measuring sensor, fingerprint identification sensor etc..
It should be noted that the electronic device may also obtain the brightness values of the first display area and the second display area in other manners. For example, referring to fig. 2, the processor 280 obtains the brightness value of the first display area 220 according to the first usage duration of the first display area 220 and the first brightness decay curve, obtains the brightness value of the second display area 240 according to the second usage duration of the second display area 240 and the second brightness decay curve, and the processor 280 obtains the first brightness difference according to the brightness value of the first display area 220 and the brightness value of the second display area 240. Since the first display area 220 and the second display area 240 have different structures, different brightness attenuation curves, and different use durations, it is necessary to calculate the brightness values of the first display area 220 and the second display area 240 according to the use durations and the attenuation curves of the first display area 220 and the second display area 240.
In another example, referring to fig. 6, the processor 280 obtains brightness values of the first display area 220 and the second display area 240 obtained by the optical module 920 of another electronic device 90. Specifically, the optical module 920 of the other electronic device 90 collects the luminance values of the first display area 220 and the second display area 240, and then the electronic device 10 obtains the luminance values of the first display area 220 and the second display area 240 through the other electronic device 90 by wireless transmission or other transmission methods. The optical module 920 of the other electronic device 90 may be one of a front camera module, a rear camera module, a light sensor, and the like.
It is understood that the processor 280 may be the main chip or other chip of the electronic device 10.
It should be noted that, when the optical module of the electronic device or another electronic device obtains the luminance value of the first display area, the processor of the electronic device controls the first display area to display the white frame and controls the second display area not to display, so that the optical module obtains the luminance value of the first display area. The second display area does not display to reduce interference, and if the second display area also displays larger brightness, the brightness value of the first display area acquired by the optical module is affected. It can be understood that if the isolation between the second display area and the optical module of the electronic device is high, it is not necessary to determine whether the second display area is closed. If the brightness value displayed in the second display area is low, the influence on the acquisition of the brightness value of the first display area is not large, and the display of the second display area can be maintained. The first display area may display a white frame, which is a 255-gray-scale white frame, i.e., a white frame with the maximum brightness.
In the embodiment of the present application, the brightness ratio between the first display area and the second display area may be obtained by a peak light intensity comparison method, and an optical module is used to obtain the brightness of a white picture (a white picture with maximum brightness) when the first display area displays 255 gray scales. In the initial stage, i.e. factory calibration, the brightness settings of the first display area and the second display area are consistent, and the maximum brightness of the first display area and the second display area is the same value, such as 500nit or 600 nit. It is understood that, since the first display region and the second display region have different structures, the driving powers of the first display region and the second display region are different. The brightness decay varies with the driving power.
When the first display area displays a plurality of pictures with different brightness values according to a plurality of different first driving powers, the optical module is further used for acquiring a plurality of first brightness values of the pictures corresponding to the plurality of different brightness values; the processor obtains an adjustment curve according to the first driving powers and the first brightness values, and adjusts the first driving powers of the first display area at different brightness values according to the adjustment curve. It can be understood that the power of the first display area that needs to be adjusted at different brightness values is also different, and the power corresponding to the maximum brightness value is adjusted, and the power corresponding to other brightness values is also adjusted, so that the first display area and the second display area can be the same or close to each other in different brightness ranges. Therefore, not only the power corresponding to the maximum brightness value of the first display area needs to be adjusted, but also the powers corresponding to other brightness values need to be adjusted, so that a plurality of different first driving powers and corresponding different brightness values of the first display area are obtained, and the first driving powers corresponding to a plurality of brightness values of the first display area can be adjusted.
It should be noted that, an adjustment curve, that is, a curve of power corresponding to different brightness values, may be preset in each of the first display area and the second display area, but the structure of the first display area is relatively special, and the brightness attenuation is relatively severe, and after the first display area is used for a period of time, the adjustment curve of the first display area needs to be adjusted. The second display area is a conventional display area, and the adjustment curve of the second display area is not easy to deviate and can be adjusted. Of course, the second display area may also adopt a similar manner of adjusting the adjustment curve of the first display area, so that the first display area and the second display area are more harmonious as a whole, and the brightness difference is not easy to occur.
In addition, in order to obtain a more accurate brightness value of the first display area, the display device can judge the ambient brightness before obtaining the brightness value of the first display area through the optical module, and the brightness value of the first display area is obtained when the ambient brightness is lower than a preset brightness threshold.
In addition, in order to better not influence the user to use the display device, before the display device acquires the brightness value of the first display area through the optical module, whether the electronic equipment is in a user interaction state or not can be acquired; if the display device is not in the user interaction state, namely the user does not use the display device of the electronic equipment, the brightness value of the first display area is obtained through the optical module.
In addition, in order to better not influence the use of the display device by the user and obtain a more accurate brightness value of the first display area, the display device can judge whether the ambient brightness and the obtained electronic equipment are in a user interaction state before obtaining the brightness value of the first display area through the optical module; when the ambient brightness is lower than the preset brightness threshold value and is not in a user interaction state, the brightness value of the first display area is obtained through the optical module.
For better understanding of the first display region of the display device in the embodiment of the present application, please refer to fig. 9, and fig. 9 is a schematic diagram of a stacked structure of the first display region of the display device in the embodiment of the present application. The first display region 220 includes a first substrate 221, a light-transmitting insulating layer 222, an anode layer 224, a pixel layer 226, a common electrode layer 228, and a second substrate 229, which are sequentially disposed. The first substrate 221 is adjacent to the light-transmitting insulating layer 222 and located on a side of the light-transmitting insulating layer 222 away from the pixel layer 226, the common electrode layer 228 is adjacent to the pixel layer 226 and located on a side of the pixel layer 226 away from the first substrate 221, and the second substrate 229 is adjacent to the common electrode layer 228 and located on a side of the common electrode layer 228 away from the pixel layer 226. The common electrode layer 228 and the reflective anode are used to drive the first pixel of the pixel layer 226 to display, and the first driving unit for driving the first pixel is disposed outside the first display region 220, so as to improve the light transmittance of the first display region 220, and the layer structure of the first display region 220 is simple, thereby facilitating the light-transmitting first display region 220 with uniform light. In some embodiments, a portion of the layer structure may be added or reduced as needed, for example, the first display region may not be provided with the second substrate.
The first driving unit for driving the first pixel of the first display region in the display device may be disposed outside the first display region, and may improve light transmittance of the first display region. Illustratively, the first driving units may be disposed in the second display area, and each of the first driving units 4 may be disposed between a plurality of second driving units driving the second pixels of the second display area. The first driving unit may be preferably disposed in the second display, and the first driving unit may employ a simplified driving circuit. For example, the first driving unit may employ a driving circuit of 2T1C or 5T1C, and the second driving unit employs a driving circuit of 7T1C, so that the second display region may obtain a better driving effect, and the second display region may also more easily accommodate the first driving unit.
In some embodiments, the first pixels of the first display region and the second pixels of the second display region may be the same in size, but in order to reduce the number of TFTs in the first driving unit that drives the first pixels of the first display region, a plurality of first pixels may be disposed in parallel, thereby reducing the number of TFTs in the first driving unit and facilitating the first driving unit to be disposed in the second display region. A first driving unit driving a plurality of first pixels requires more driving power, which also causes the brightness of the first pixels to be more severely attenuated than the brightness of the second pixels.
In order to better accommodate the first driving unit, the second display region may include a transition region, the transition region is adjacent to the first display region, the plurality of second pixels in the transition region are arranged in parallel, and one second driving unit in the transition region may drive the plurality of second pixels in parallel, thereby freeing a part of space, which may be used for arranging the first driving unit. It is to be understood that the second display area may also be provided without a transition area, but with the first drive units distributed in an area adjacent to the first display area. It should be noted that the first driving unit may be disposed in a non-display area of the display device.
It should be noted that the first driving unit may also be disposed in the first display area, and the first driving unit may adopt a simpler driving circuit and be disposed below the reflective anode, so as to improve the light transmittance of the first display area.
It will be appreciated that in any of the above embodiments, the size and shape of the first pixels in the first display region may be set as desired. For example, the first pixel may be rectangular or may be circular-like. The first circle-like pixels may be circular, elliptical, or rounded rectangular, etc. The circular-like first pixel can improve the diffraction problem of the first display area because the edge is in arc transition.
The display device may be in a regular shape, such as rectangular, rounded rectangular or circular. Of course, in some other possible embodiments, the display device may also have an irregular shape, which is not limited in this application.
For a more complete understanding of the electronic device of the embodiments of the present application. The structure of the electronic device is further explained below. Referring to fig. 2, the electronic device 10 further includes a housing 40 and a camera module 620.
The housing 40 may include a rear cover (not shown) and a bezel 420, the bezel 420 being disposed around a periphery of the rear cover. The display device 20 may be disposed within the bezel 420, and the display device 20 and the rear cover may serve as opposing sides of the electronic device 10. The camera module 620 is disposed between the rear cover of the housing 40 and the display device 20. The display device 20 may be an Organic Light-Emitting Diode (OLED) display device 20. The display device 20 may be a full-screen, i.e., substantially all of the display surface of the display device 20 is a display area. A cover plate may also be provided on the display device 20. The cover plate covers the display device 20 to protect the display device 20 from being scratched or damaged by water. Wherein the cover may be a clear glass cover so that a user may view the information displayed by the display device 20 through the cover. For example, the cover plate may be a sapphire cover plate.
The electronic device may further include a circuit board, a battery, and a midplane. Bezel 420 is disposed around the midplane, wherein bezel 420 and the midplane may form a middle frame of electronic device 10. The middle plate and the bezel 420 form a receiving cavity on each side of the middle plate, wherein one receiving cavity is used for receiving the display device 20, and the other receiving cavity is used for receiving a circuit board, a battery and other electronic elements or functional components of the electronic device 10.
The middle plate may have a thin plate-like or sheet-like structure, or may have a hollow frame structure. The middle frame is used for providing a supporting function for the electronic elements or functional components in the electronic device 10 so as to mount the electronic elements or functional components in the electronic device 10 together. The camera module 620, the receiver, the battery, and other functional components of the electronic device 10 may be mounted on the center frame or the circuit board for fixing. It is understood that the material of the middle frame may include metal or plastic.
The circuit board may be mounted on the middle frame. The circuit board may be a motherboard of the electronic device 10. One or more of functional components such as a microphone, a loudspeaker, a receiver, an earphone interface, an acceleration sensor, a gyroscope, a processor and the like can be integrated on the circuit board. Meanwhile, the display device 20 may be electrically connected to the circuit board to control the display of the display device 20 through a processor on the circuit board. The display device 20 and the camera module 620 may both be electrically connected to the processor; when the processor receives the shooting instruction, the processor controls the first display area to close the display, and controls the camera module 620 to collect images through the first display area; when the processor does not receive the shooting instruction and receives the image display instruction, the processor controls the first display area and the second display area to display images together.
The battery may be mounted on the middle frame. Meanwhile, the battery is electrically connected to the circuit board to enable the battery to power the electronic device 10. Wherein, the circuit board can be provided with a power management circuit. The power management circuitry is used to distribute the voltage provided by the battery to the various electronic components in the electronic device 10.
Referring to fig. 10, fig. 10 is a schematic flowchart illustrating a control method of a display device according to an embodiment of the present application. The method is applied to electronic equipment, the electronic equipment comprises a display device and an optical module, the display device comprises a first display area and a second display area which are adjacent, the light transmittance of the first display area is greater than that of the second display area, and the optical module is arranged on one side of the display device and at least partially opposite to the first display area; the structure of the electronic device may refer to the structure of the electronic device in any of the above embodiments, and details are not described here. The method comprises the following steps:
301, obtaining the brightness value of the first display area through the optical module.
The brightness value of the first display area can be conveniently and accurately acquired through the optical module in the electronic equipment.
302, a first brightness difference value of the first display area and the second display area is obtained.
The processor acquires the brightness values of the first display area and the second display area, and then obtains a first brightness difference value according to the brightness values of the first display area and the second display area.
And 303, adjusting at least one of a first driving power of the first display area and a second driving power of the second display area according to the first brightness difference, wherein the adjusted first display area and the adjusted second display area have a second brightness difference, and the second brightness difference is smaller than the first brightness difference.
In order to ensure that the display device has uniform overall display, the display brightness of the first display area and the second display area with different light transmittances is the same or similar, but the light transmittances of the first display area and the second display area are different, namely the structures of the first display area and the second display area are different, so that the brightness attenuation conditions of the first display area and the second display area are different, and the brightness difference of the first display area and the second display area is larger and larger after the display device is used for a period of time. In order to improve the above problem, a processor of the electronic device obtains a first brightness difference value of the first display area and the second display area, and adjusts at least one of a first driving power of the first display area and a second driving power of the second display area according to the first brightness difference value, wherein the adjusted first display area and the adjusted second display area have a second brightness difference value, and the second brightness difference value is smaller than the first brightness difference value, so that the brightness difference between the first display area and the second display area is improved.
It is understood that the functions implemented by the processor in this embodiment may be the same as the functions implemented by the processor in any of the above embodiments, and are not described herein again.
Wherein, obtaining the brightness value of the first display area through the optical module may include: obtaining the ambient brightness; and when the ambient brightness is lower than the preset brightness threshold, acquiring the brightness value of the first display area through the optical module. When the ambient brightness is lower than the preset brightness threshold, it can also be understood that, when the electronic device is in a darker environment, the brightness value of the first display area is obtained through the optical module, so that the interference of the ambient brightness can be avoided, especially when the ambient brightness is large, such as in the midday outdoor environment, a high-power electric lamp is arranged indoors, and light irradiates the display device.
Obtaining the brightness value of the first display area through the optical module may further include: acquiring whether the electronic equipment is in a user interaction state; and if the first display area is not in the user interaction state, acquiring the brightness value of the first display area through the optical module. The electronic device is not in the user interaction state may be understood as that the user does not interact with the electronic device, for example, the display device is in a screen lock state or a screen rest state, the electronic device is not used, and the like. When the electronic equipment is not in a user interaction state, the brightness value of the first display area is obtained through the optical module.
It can be understood that the obtaining of the brightness value of the first display area by the optical module may further include: acquiring the ambient brightness and whether the electronic equipment is in a user interaction state; and when the ambient brightness is lower than the preset brightness threshold and is not in a user interaction state, acquiring the brightness value of the first display area through the optical module.
Before obtaining the first brightness difference value between the first display area and the second display area, the method may further include: acquiring a second service time of the second display area and a second brightness attenuation curve corresponding to the second display area; and acquiring the brightness value of the second display area according to the second service time and the second brightness attenuation curve. The second display area is a normal display area and has a second brightness attenuation curve of the use duration and the brightness, and the brightness obtained by the same second driving power or the brightness of the initial brightness can be calculated through the second brightness attenuation curve after the second display area is used for a long time, so that the processor can obtain the second use duration of the second display area and the corresponding second brightness attenuation curve, and calculate the current brightness value of the second display area according to the second use duration of the second display area and the second brightness attenuation curve.
It can be understood that the embodiment of the present application may also obtain the brightness value of the second display area through other manners, for example, any manner of obtaining the brightness value of the second display area in the above embodiments may be adopted in the embodiment of the present application, and details are not described herein again.
Wherein adjusting at least one of the first driving power of the first display region and the second driving power of the second display region according to the first luminance difference value may include: only the first driving power of the first display area may be adjusted, only the second driving power of the second display area may be adjusted, or both the first driving power of the first display area and the second driving power of the second display area may be adjusted.
Adjusting the first driving power of only the first display area specifically includes: after the processor obtains the brightness value of the first display area and the brightness value of the second display area, only the first driving power of the first display area may be adjusted, so that the adjusted brightness values of the first display area and the second display area are smaller than the preset threshold. Considering that if the brightness attenuation of the second display area is relatively small, the second driving power of the second display area may not be adjusted, but only the first driving power of the first display area may be adjusted, and the amount of data calculated by the processor is relatively small, so that the brightness of the first display area and the brightness of the second display area may be better made to be the same or similar.
Adjusting only the second driving power of the second display region may specifically include: and after the processor obtains the brightness value of the first display area, only adjusting the second driving power of the second display area so as to enable the brightness values of the adjusted first display area and the second display area to be smaller than a preset threshold value. The first driving power of the first display area is not adjusted, and only the second driving power of the second display area is adjusted.
Adjusting both the first driving power of the first display area and the second driving power of the second display area may specifically include: and adjusting the first driving power of the first display area and the second driving power of the second display area so that the brightness values of the adjusted first display area and the adjusted second display area are smaller than a preset threshold value. Illustratively, the processor adjusts the second driving power of the second display area according to the second brightness decay curve, and the processor adjusts the first driving power of the first display area according to the adjusted display brightness of the second display area, so that the brightness values of the adjusted first display area and the adjusted second display area are smaller than the preset threshold value. The adjusted first display area and the second display area can reach or approach the brightness in the initial state. In another example, the second driving power of the second display area may be adjusted to meet the requirement. In consideration of the actual situation or in order to prolong the service life of the second display area, the display brightness of the adjusted second display area may not need to cause the display brightness in the initial state, the display brightness of the adjusted second display area is a preset proportion of the display brightness in the initial state, such as 98% or 95%, the preset proportion may be a fixed value, or may be a dynamic value and has an inverse proportion relation with the service life of the second display area, that is, the longer the service life of the second display area is, the smaller the preset proportion is. And then, based on the adjusted display brightness of the second display area, adjusting the first driving power of the first display area so that the brightness values of the adjusted first display area and the second display area are smaller than a preset threshold value. The display brightness of the second display area can be smaller than the display brightness in the initial state after adjustment, the first driving power does not need to be adjusted to be very large, the display brightness required to be achieved by the first display area is easier to achieve, the power consumption of the first display area and the power consumption of the second display area can be effectively reduced, the service life of the first display area is prolonged, the brightness of the first display area and the brightness of the second display area are close or equal, the first display area and the second display area are not easy to be used for a period of time, and the first display area cannot achieve the brightness of the second display area all the time due to the attenuation of the first pixels of the first display area.
Of course, in some other examples, the processor may further adjust the first driving power of the first display area first, and then adjust the second driving power of the second display area according to the adjusted display brightness of the first display area, so that the adjusted brightness values of the first display area and the second display area are smaller than the preset threshold. The specific manner of adjusting the first driving power and the second driving power may refer to the adjustment manner of the above embodiments, and is not described herein again.
In order to better understand the control method of the display device according to the embodiment of the present application, the following description is given by way of example. Referring to fig. 11, fig. 11 is another schematic flow chart illustrating a control method of a display device according to an embodiment of the present disclosure. The display device control method includes:
310, the first display area displays 255 gray scale white pictures;
311, acquiring the brightness value of the first display area in real time by the front camera;
312, obtaining a pre-stored brightness value theoretically acquired by the front camera when the first display area displays a 255 gray-scale white picture;
313, comparing the brightness value of the first display area collected in real time with the brightness value collected theoretically, skipping 314 if the brightness values are consistent, and skipping 315 if the brightness values are inconsistent;
314 maintaining the current state without changing the driving current of the first display region;
315, inputting the brightness value of the first display area acquired by the front camera in real time into the processor;
316, the processor divides the brightness value acquired in real time in the first display area by the stored brightness value acquired theoretically to obtain a correction amount;
317, the processor sends the correction amount to a driving IC of the display device;
318, the driving IC changes the driving current for driving the first display area according to the correction amount;
319 raising the brightness of the first display area to match the second display area.
In the step corresponding to 318, the driving current of the first display region may be increased according to the correction amount or decreased according to the correction amount, as long as the luminance of the first display region and the luminance of the second display region can be made equal or similar. The step 312 may be replaced by acquiring the brightness value of the second display area, and the subsequent steps are adjusted correspondingly to make the brightness of the first display area and the brightness of the second display area the same or similar.
It should be noted that the control method of the display device in the embodiment of the present application may be applied to the electronic device or the display device in any one of the embodiments described above, and it is also understood that the control method of the display device may be applied to the electronic device or the display device in the embodiments described above. Similarly, the electronic device or the display device in the above embodiments may use the control method of the display device in the embodiments of the present application. A person skilled in the art can reasonably combine the electronic device or the display apparatus in the above embodiments with the control method of the display apparatus in the embodiments of the present application as needed.
It should be understood that reference to "a plurality" herein means two or more.
The electronic device and the control method of the display device provided by the embodiment of the application are described in detail above. The principles and implementations of the present application are described herein using specific examples, which are presented only to aid in understanding the present application. Meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims (15)

1. An electronic device, characterized in that: the method comprises the following steps:
the display device comprises a first display area and a second display area which are adjacent, wherein the light transmittance of the first display area is greater than that of the second display area;
the optical module is arranged on one side of the display device and at least partially arranged opposite to the first display area, and is used for acquiring the brightness value of the first display area, wherein the optical module is a camera module which is used for acquiring an external optical signal image passing through the first display area and multiplexing and acquiring the brightness value of the first display area; and
the processor is connected with the display device and the optical module, the processor acquires the brightness value of the first display area through the optical module, and obtaining a first brightness difference value of the first display area and the second display area, and adjusting at least one of a first driving power of the first display area and a second driving power of the second display area according to the first brightness difference value, wherein the adjusted first display area and the second display area have a second brightness difference value, and the second brightness difference value is smaller than the first brightness difference value, when the optical module collects the brightness value of the first display area, if the isolation between the second display area and the optical module is smaller than a preset isolation value or the brightness value displayed by the second display area is larger than a preset brightness value, the processor controls the second display area not to display; and if the isolation between the second display area and the optical module is not smaller than the preset isolation value or the brightness value displayed in the second display area is not larger than the preset brightness value, the processor controls the second display area to maintain display.
2. The electronic device of claim 1, wherein the adjusted brightness values of the first display area and the second display area are less than a preset threshold.
3. The electronic device according to claim 1, wherein the processor controls the first display area to display a white frame and controls the second display area not to display, so that the optical module obtains a brightness value of the first display area.
4. The electronic device according to claim 3, wherein when the first display area displays a plurality of frames with different brightness values according to a plurality of different first driving powers, the optical module is further configured to obtain a plurality of first brightness values corresponding to the plurality of frames with different brightness values;
the processor obtains an adjustment curve according to the first driving powers and the first brightness values, and adjusts the first driving powers of the first display area at different brightness values according to the adjustment curve.
5. The electronic device according to claim 1, wherein the processor obtains a second usage duration of the second display area and a second brightness attenuation curve corresponding to the second display area, and calculates a brightness value of the second display area according to the second usage duration and the second brightness attenuation curve.
6. The electronic device of claim 5, wherein the processor adjusts the second driving power of the second display area according to a second brightness decay curve, and the processor adjusts the first driving power of the first display area according to the adjusted display brightness of the second display area, so that the adjusted brightness values of the first display area and the second display area are smaller than a preset threshold.
7. The electronic device of claim 1, wherein the processor obtains the brightness value of the second display area through an optical module of another electronic device.
8. The electronic device according to claim 1, further comprising a light sensing module disposed at a side of the display device and at least partially opposite to the second display area, wherein the light sensing module is configured to obtain a brightness value of the second display area, and the processor obtains the brightness value of the second display area through the light sensing module.
9. The electronic device according to any one of claims 1-8, wherein the optical module is a camera module, the camera module includes a lens, the lens is disposed toward the first display area, and the camera module is further configured to obtain an external light signal transmitted through the first display area for imaging.
10. The electronic device of any of claims 1-8, wherein the first display region includes a plurality of first pixels and the second display region includes a plurality of second pixels, and wherein a distribution density of the plurality of first pixels is less than a distribution density of the plurality of second pixels.
11. The control method of the display device is applied to electronic equipment and is characterized in that the electronic equipment comprises the display device and an optical module, the display device comprises a first display area and a second display area which are adjacent, the light transmittance of the first display area is larger than that of the second display area, the optical module is arranged on one side of the display device and at least partially arranged opposite to the first display area, the optical module is a camera module, and the camera module is used for acquiring an external optical signal image passing through the first display area and multiplexing and acquiring the brightness value of the first display area; the method comprises the following steps:
acquiring a brightness value of the first display area through the optical module, wherein when the optical module collects the brightness value of the first display area, if the isolation between the second display area and the optical module is smaller than a preset isolation value or the brightness value displayed by the second display area is larger than a preset brightness value, the second display area does not display; if the isolation between the second display area and the optical module is not smaller than the preset isolation value or the brightness value displayed in the second display area is not larger than the preset brightness value, the second display area keeps displaying;
acquiring a brightness value of the second display area, and acquiring a first brightness difference value of the first display area and the second display area; and
and adjusting at least one of first driving power of the first display area and second driving power of the second display area according to the first brightness difference value, wherein the adjusted first display area and the adjusted second display area have a second brightness difference value, and the second brightness difference value is smaller than the first brightness difference value.
12. The method according to claim 11, wherein the obtaining the brightness value of the first display area through the optical module comprises:
obtaining the ambient brightness; and
and when the ambient brightness is lower than a preset brightness threshold value, acquiring the brightness value of the first display area through the optical module.
13. The method according to claim 11, wherein the obtaining the brightness value of the first display area through the optical module comprises:
acquiring whether the electronic equipment is in a user interaction state; and
and if the display area is not in the user interaction state, acquiring the brightness value of the first display area through the optical module.
14. The method according to claim 11, wherein before acquiring the first luminance difference value between the first display area and the second display area, the method further comprises:
acquiring a second use duration of the second display area and a second brightness attenuation curve corresponding to the second display area; and
and acquiring the brightness value of the second display area according to the second service time and the second brightness attenuation curve.
15. The method according to claim 14, wherein adjusting at least one of the first driving power of the first display region and the second driving power of the second display region according to the first luminance difference value comprises:
adjusting a second driving power of the second display area according to a second brightness attenuation curve; and
and adjusting the first driving power of the first display area according to the adjusted display brightness of the second display area, so that the adjusted brightness values of the first display area and the second display area are smaller than a preset threshold value.
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