CN110880292B - Ambient light brightness determination device and method - Google Patents
Ambient light brightness determination device and method Download PDFInfo
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- CN110880292B CN110880292B CN201811040959.2A CN201811040959A CN110880292B CN 110880292 B CN110880292 B CN 110880292B CN 201811040959 A CN201811040959 A CN 201811040959A CN 110880292 B CN110880292 B CN 110880292B
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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]
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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]
- G09G3/3225—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] using an active matrix
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- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
Abstract
The disclosure relates to an ambient light brightness determination device and method, and belongs to the technical field of electronics. The device comprises: the display screen comprises n display subareas, wherein the n display subareas comprise m target display subareas, and the target display subareas are display subareas positioned above the brightness sensor; each display subarea comprises a group of GOA units, and the GOA units are used for controlling the display brightness of the display subareas; the m brightness sensors are respectively connected with the driving IC and the main control chip, and the n groups of GOA units are respectively connected with the driving IC; wherein m is less than or equal to n, and m and n are positive integers. The present disclosure improves the accuracy of ambient light brightness value determination. The present disclosure provides for determination of ambient light brightness in a scene with a brightness sensor disposed below the display screen.
Description
Technical Field
The present disclosure relates to the field of electronic technologies, and in particular, to an apparatus and a method for determining ambient light brightness.
Background
The full-screen terminal is a terminal with a screen occupying rate close to 100%, and compared with a traditional terminal with a sensor arranged on the forehead of the terminal, the full-screen terminal needs to arrange the sensor at other parts of the terminal, so that the display screen can occupy a larger area on a panel.
In the related art, it is common to dispose a brightness sensor among the sensors below the display screen. The brightness sensor converts the optical signal passing through the display screen into an electric signal, so that the terminal determines the brightness value corresponding to the electric signal according to the electric signal acquired by the brightness sensor. The brightness value corresponding to the electric signal comprises a brightness value of the ambient light and a brightness value of the display screen.
The terminal cannot acquire the brightness value of the display screen, so that the terminal cannot determine the brightness value of the ambient light.
Disclosure of Invention
The present disclosure provides an ambient light brightness determination apparatus and method, which can solve the problem that a terminal in the related art cannot determine a brightness value of ambient light, and the technical scheme is as follows:
according to a first aspect of the present disclosure, there is provided an ambient light brightness determination apparatus, the apparatus comprising:
the display device comprises a brightness sensor, a drive IC (Integrated Circuit) and a main control chip, wherein the brightness sensor, the drive IC and the main control chip are arranged below a display screen, the display screen comprises n display partitions, the n display partitions comprise m target display partitions, and the target display partitions are display partitions positioned above the brightness sensor;
each display partition comprises a group of GOA (Gate driver on array, array substrate row driver) units, and the GOA units are used for controlling the display brightness of the display partition;
the m brightness sensors are respectively connected with the driving IC and the main control chip, and the n groups of GOA units are respectively connected with the driving IC;
wherein m is less than or equal to n, and m and n are positive integers.
Optionally, the driver IC is configured to transmit a first control signal to the ith group of target GOA units, where the first control signal is used to control the ith group of target GOA units to be in a non-operating state, and the ith target display partition is turned off when the ith group of target GOA units are in the non-operating state;
the driving IC is further used for sending indication information to the ith brightness sensor when the ith target display partition is turned off, wherein the indication information is used for indicating the ith brightness sensor to collect optical signals penetrating through the display screen;
the main control chip is also used for determining the brightness value of the ambient light according to the optical signals collected by the m brightness sensors;
wherein i is a positive integer.
Optionally, the driver IC is further configured to send indication information to the ith luminance sensor every preset period;
the preset period is an acquisition period for acquiring the optical signal penetrating through the display screen by the brightness sensor, and the acquisition period is an integral multiple of one frame of image displayed by the display screen.
Optionally, the display screen includes a first display partition and a second display partition, and the second display partition is a display partition located above the brightness sensor;
the first display partition includes a first set of GOA cells and the second display partition includes a second set of GOA cells.
Optionally, the driver IC is configured to transmit a second control signal to the first group of GOA units and transmit a first control signal to the second group of GOA units in a first half of a frame image refresh period, where the second control signal is used to control the first group of GOA units to be in an operating state, and the first display screen displays brightness when the first group of GOA units are in the operating state;
and the driving IC is also used for transmitting a first control signal to the first group of GOA units and transmitting a second control signal to the second group of GOA units in the second half period of the refreshing period of one frame of image.
Optionally, the m brightness sensors are configured to collect optical signals transmitted through the display screen and convert the optical signals into electrical signals;
and the m brightness sensors are also used for transmitting the electric signals to the main control chip.
According to a first aspect of the present disclosure, there is provided an ambient light brightness determination method applied to the ambient light brightness determination device of the first aspect, the method including:
the driving IC transmits a first control signal to the ith group of target GOA units, the first control signal is used for controlling the ith group of target GOA units to be in a non-working state, and the ith target display partition is turned off when the ith group of target GOA units are in the non-working state;
when the ith target display subarea is turned off, the driving IC sends indicating information to the ith brightness sensor, and the indicating information is used for indicating the ith brightness sensor to collect optical signals penetrating through the display screen;
the main control chip determines the brightness value of the ambient light according to the light signals collected by the m brightness sensors;
wherein m and i are both positive integers.
Optionally, the sending, by the driver IC, the indication information to the ith luminance sensor includes:
the driving IC sends indication information to the ith brightness sensor every preset period;
the preset period is an acquisition period for acquiring the optical signal penetrating through the display screen by the brightness sensor, and the acquisition period is an integral multiple of one frame of image displayed by the display screen.
Optionally, the display screen includes a first display sub-area and a second display sub-area, the second display sub-area is a display sub-area located above the brightness sensor, the first display sub-area includes a first group of GOA units, and the second display sub-area includes a second group of GOA units;
in the first half period of a frame image refreshing period, the driving IC transmits a second control signal to the first group of GOA units and transmits a first control signal to the second group of GOA units, the second control signal is used for controlling the first group of GOA units to be in a working state, and the first display screen displays brightness when the first group of GOA units are in the working state;
in the second half of the refresh period of one frame of image, the driver IC transmits the first control signal to the first group of GOA units and transmits the second control signal to the second group of GOA units.
Optionally, the determining, by the main control chip, the ambient light brightness value according to the light signals collected by the m brightness sensors includes:
the m brightness sensors collect optical signals penetrating through the display screen and convert the optical signals into electric signals;
the m brightness sensors transmit the electric signals to the main control chip;
and the main control chip determines the brightness value of the environment light according to the electric signal.
The technical scheme provided by the disclosure at least comprises the following beneficial effects:
the device comprises a brightness sensor, a drive Integrated Circuit (IC) and a main control chip, wherein the brightness sensor, the drive Integrated Circuit (IC) and the main control chip are arranged below a display screen, the display screen comprises n display partitions, the n display partitions comprise m target display partitions, and the target display partitions are display partitions positioned above the brightness sensor. The driving IC is used for transmitting a first control signal to the ith group of target GOA units and sending indication information to the ith brightness sensor when the screen of the ith target display partition is turned off so that the brightness sensor collects light signals penetrating through the display screen. Because the brightness sensor collects the light signals when the target display subarea is turned off, the influence of the brightness of the display screen when the ambient light is determined is eliminated, and the accuracy of the determined ambient light brightness value is improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
In order to more clearly illustrate the embodiments of the present disclosure, the drawings that are needed to be used in the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present disclosure, and that other drawings can be obtained by those skilled in the art without inventive effort.
FIG. 1 is a block diagram illustrating an ambient light level determining apparatus provided by an embodiment of the present disclosure;
FIG. 2 shows a schematic view of a luminance sensor disposed below a display screen;
FIG. 3 is a schematic diagram of a display screen including two display sections;
fig. 4 shows a schematic structural diagram of a first group of GOA units;
fig. 5 shows a schematic structural diagram of a second group of GOA units;
FIG. 6 is a flow chart illustrating a method for determining ambient light level according to an embodiment of the present disclosure;
FIG. 7 is a flow chart illustrating another method for determining ambient light level provided by embodiments of the present disclosure;
fig. 8 shows a block diagram of another ambient light level determination apparatus provided by the embodiment of the present disclosure.
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more clear, the present disclosure will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present disclosure, not all of the embodiments. All other embodiments, which can be derived by one of ordinary skill in the art from the embodiments disclosed herein without making any creative effort, shall fall within the scope of protection of the present disclosure.
The embodiment of the present disclosure provides an ambient Light brightness determining apparatus, which may be a mobile device such as a smart phone or a tablet computer, and a display screen of the mobile device may be an OLED (Organic Light-Emitting Diode) display screen. As shown in fig. 1, the apparatus may include:
a brightness sensor 120 disposed under the display screen 110, a driving IC 130, and a main control chip 140. The display screen 110 may include n display sections, which may include m target display sections, which are display sections located above the brightness sensor 120.
Wherein m is less than or equal to n, and m and n are positive integers. The n display partitions may be the same in size or different in size, which is not limited in this disclosure. Assuming that n is 3 and m is 2, as shown in fig. 1, the display screen 110 includes 3 display partitions, the 3 display partitions include 2 target display partitions, and the luminance sensors 120 are disposed below the 2 target display partitions.
In the embodiment of the disclosure, the display screen 110 may be an OLED display screen, an AMOLED (Active-matrix Organic Light Emitting Diode) display screen, or a micro OLED (micro Organic Light-Emitting Diode) display screen.
Fig. 2 shows a schematic view of a luminance sensor arranged below a display screen. As shown in fig. 2, a layer of flexible material 001 is disposed below the display screen 110, and the brightness sensor 120 may be disposed in the flexible material 001 by digging a hole in the flexible material 001. By way of example, the flexible material 001 may be a cotton or other flexible material that can serve the same purpose.
As shown in fig. 1, each display partition includes a group of GOA units, which may include at least one GOA unit. The GOA unit is used for controlling the display brightness of the display subareas. Optionally, each display partition displays brightness when the corresponding group of GOA units is in an operating state, and turns off the screen when the corresponding group of GOA units is in a non-operating state.
The m luminance sensors 120 are respectively connected to the driving IC 130 and the main control chip 140, and the n groups of GOA units are respectively connected to the driving IC 130.
Optionally, the driving IC 130 is configured to transmit a first control signal to the ith group of target GOA units, where the first control signal is used to control the ith group of target GOA units to be in a non-operating state, and the ith target display partition is turned off when the ith group of target GOA units are in the non-operating state. Wherein i is a positive integer.
And the driving IC 130 is further configured to send indication information to the ith luminance sensor 120 when the ith target display area is turned off, where the indication information is used to instruct the ith luminance sensor 120 to collect the light signal transmitted through the display screen 110.
Let i be 1. Referring to fig. 1, after the driving IC 130 transmits the first control signal to the group 1 target GOA unit, the group 1 target GOA unit is in a non-operating state, and the 1 st target display partition is turned off when the group 1 target GOA unit is in the non-operating state. Then, the driving IC 130 sends indication information to the luminance sensor 120 located below the 1 st target display sub-area, so that the luminance sensor 120 collects the light signal transmitted through the display screen 110 when the 1 st target display sub-area is turned off. Because the brightness sensor collects the light signals when the target display subarea is turned off, the influence of the brightness of the display screen when the ambient light is determined is eliminated, and the accuracy of the determined ambient light brightness value is improved.
Optionally, the driving IC 130 is further configured to send indication information to the ith luminance sensor 120 every preset period.
The preset period may be an acquisition period during which the luminance sensor 120 acquires the light signal transmitted through the display screen 110, and the acquisition period may be an integer multiple of a frame of image displayed by the display screen 110.
In the embodiment of the present disclosure, the driving IC 130 may transmit indication information to the luminance sensor 120 located under the ith target display partition when the ith target display partition is turned off during the display of each frame image by the display screen 110. It is also possible to send indication information to the brightness sensor 120 located below the ith target display screen 110 every k frames of images when the ith target display screen is turned off.
For example, assuming that i is 1 and k is 3, when the 1 st target display partition is turned off while the display screen 110 displays the 1 st frame image, the driving IC 130 sends the indication information to the luminance sensor 120 located below the 1 st target display partition. When the 1 st target display sub-area is turned off while the 5 th frame image is displayed, the driving IC 130 transmits indication information to the luminance sensor 120 located below the 1 st target display sub-area.
Alternatively, fig. 3 shows a structural diagram that the display screen includes two display partitions. As shown in fig. 3, the display screen 110 may include a first display section and a second display section, which is a display section located above the brightness sensor 120. The first display partition may include a first group of GOA cells and the second display partition may include a second group of GOA cells. That is, the second display partition is a target display partition, and the second group of GOA units is target GOA units. The first display section and the second display section may be the same size or different sizes. Assuming that the time for the luminance sensor 120 to collect the light signal is 2ms to 3ms, the size ratio of the first display section and the second display section may be 1:1 to 4.5: 1.
Fig. 4 shows a schematic structural diagram of a first group of GOA units. As shown in fig. 4, the first group of GOA cells may include a plurality of GOA cells, and the driving IC 130 is connected to the first group of GOA cells through a signal line S1. Fig. 5 shows a schematic structural diagram of a second group of GOA units. As shown in fig. 5, the second group of GOAs may include a plurality of GOA units, and the driving IC 130 is connected to the second group of GOA units through a signal line S2.
Optionally, the driving IC 130 is configured to transmit a second control signal to the first group of GOA units and transmit a first control signal to the second group of GOA units in the first half of the frame image refresh period, where the second control signal is used to control the first group of GOA units to be in an operating state, and the first display screen displays brightness when the first group of GOA units are in the operating state.
In the embodiment of the present disclosure, if the refresh frequency of the display screen displaying one frame of image is h, since the display screen may include n display partitions, the refresh frequency of each display partition may be n × h in the process of displaying one frame of image. For example, h may be 50HZ (hertz) or 60 HZ. If h is 60HZ, the refresh frequency of the first display screen and the second display screen is 120HZ respectively during the process of displaying one frame of image. In the process of displaying images, the display effect of the display screen is ensured by improving the refreshing frequency of each display partition.
In the first half period of one frame of image, the driving IC 130 may transmit the second control signal to the first group of GOA cells through the signal line S1 shown in fig. 4, and may transmit the first control signal to the second group of GOA cells through the signal line S2 shown in fig. 5. The first group of GOA units are in a working state under the action of the second control signal, and the first display screen displays brightness at the moment. The second group of GOA units are in a non-working state under the action of the first control signal, and at the moment, the second display screen is turned off. When the second display screen is turned off, the driving IC 130 may send indication information to the brightness sensor 120 located below the second display screen, so that the brightness sensor 120 collects the light signal transmitted through the display screen 110 when the second display screen is turned off. That is, in the first half of the image refresh period of one frame, the first group of GOA units is in the working state, and accordingly, the first display partition displays the brightness. The second group of GOA units are in a non-working state, and correspondingly, the second display subarea is turned off.
The driver IC 130 is further configured to transmit a first control signal to the first group of GOA units and transmit a second control signal to the second group of GOA units in a second half of the image refresh period of one frame. That is, in the second half of the refresh period of one frame of image, the first group of GOA units is in the non-working state, and correspondingly, the first display partition is turned off. The second group of GOA units are in working state, and correspondingly, the second display subarea displays brightness.
In a refresh period of one frame of image, the driving IC 130 alternately refreshes the first display section and the second display section by transmitting control signals to the first group of GOA cells and the second group of GOA cells, respectively.
In the disclosed embodiment, by dividing the display screen into n display partitions, each display partition includes a group of GOA units. Thus, during the display of each frame of image, the driving IC 130 alternately refreshes the plurality of display sections by transmitting the control signal to each group of GOA cells. The brightness sensor positioned below the target display screen can collect light signals when the target display screen is turned off, and the influence of the brightness of the display screen on determining ambient light is eliminated. In addition, the display effect of the display screen is ensured by improving the refreshing frequency of each display partition.
The m brightness sensors 120 are configured to collect light signals transmitted through the display screen 110 and convert the light signals into electrical signals.
The brightness sensor 120 may collect the light signal transmitted through the display screen 110 after receiving the indication information transmitted from the driving IC 130.
The main control chip 140 is further configured to determine an ambient light brightness value according to the light signals collected by the m brightness sensors 120.
The main control chip 140 may determine the ambient light brightness value according to an average value of the electrical signals transmitted by the m brightness sensors 120.
In summary, the device for determining ambient light brightness provided by the embodiment of the present disclosure includes a brightness sensor, a driving integrated circuit IC, and a main control chip disposed below a display screen, where the display screen includes n display partitions, the n display partitions include m target display partitions, and the target display partitions are display partitions located above the brightness sensor. The driving IC is used for transmitting a first control signal to the ith group of target GOA units and sending indication information to the ith brightness sensor when the screen of the ith target display partition is turned off so that the brightness sensor collects light signals penetrating through the display screen. Because the brightness sensor collects the light signals when the target display subarea is turned off, the influence of the brightness of the display screen when the ambient light is determined is eliminated, and the accuracy of the determined ambient light brightness value is improved.
The embodiment of the present disclosure provides an ambient light brightness determination method, as shown in fig. 6, which is applied to the ambient light brightness determination device shown in fig. 1 or fig. 3, and the method may include:
in step 201, the driving IC transmits a first control signal to the ith group of target GOA units, where the first control signal is used to control the ith group of target GOA units to be in a non-operating state, and the ith target display area is turned off when the ith group of target GOA units are in the non-operating state.
Wherein i is a positive integer. Let i be 1. Referring to fig. 1, after the driving IC 130 transmits the first control signal to the group 1 target GOA unit, the group 1 target GOA unit is in a non-operating state, and the 1 st target display partition is in a screen-off state.
In step 202, when the ith target display area is turned off, the driving IC sends indication information to the ith luminance sensor, wherein the indication information is used for indicating the ith luminance sensor to collect the light signal transmitted through the display screen.
Referring to fig. 1, when the 1 st target display sub-area is turned off, the driving IC 130 sends indication information to the luminance sensor 120 located below the 1 st target display sub-area, so that the luminance sensor 120 collects light signals transmitted through the display screen 110 when the 1 st target display sub-area is turned off. Because the brightness sensor collects the light signals when the target display subarea is turned off, the influence of the brightness of the display screen when the ambient light is determined is eliminated, and the accuracy of the determined ambient light brightness value is improved.
In step 203, the main control chip determines the brightness value of the ambient light according to the light signals collected by the m brightness sensors.
Wherein m is a positive integer. After receiving the indication information transmitted by the driving IC 130, the luminance sensor 120 collects an optical signal transmitted through the display screen 110, converts the optical signal into an electrical signal, and transmits the converted electrical signal to the main control chip 140. The main control chip 140 may determine the ambient light brightness value according to an average value of the electrical signals transmitted by the m brightness sensors.
To sum up, in the method for determining ambient light brightness provided by the embodiment of the present disclosure, the driving IC transmits the first control signal to the ith group of target GOA units, and sends the indication information to the ith luminance sensor when the screen of the ith target display partition is turned off, so that the luminance sensor collects the light signal passing through the display screen. Because the brightness sensor collects the light signals when the target display subarea is turned off, the influence of the brightness of the display screen when the ambient light is determined is eliminated, and the accuracy of the determined ambient light brightness value is improved.
Another ambient light level determining method, as shown in fig. 7, applied to the ambient light level determining apparatus shown in fig. 1, may include:
in step 301, the driver IC transmits a first control signal to the ith group of target GOA cells.
The first control signal is used for controlling the ith group of target GOA units to be in a non-working state, and the ith target display partition is turned off when the ith group of target GOA units are in the non-working state.
As shown in fig. 3, the display screen 110 includes a first display section and a second display section, the second display section is a display section located above the brightness sensor 120, the first display section includes a first group of GOA cells, and the second display section includes a second group of GOA cells. The first display section and the second display section may be the same size or different sizes.
In the first half of the refresh period of one frame of image, the driving IC 130 transmits a second control signal to the first group of GOA units and transmits a first control signal to the second group of GOA units, the second control signal is used to control the first group of GOA units to be in a working state, and the first display screen displays brightness when the first group of GOA units is in the working state. That is, in the first half of the image refresh period of one frame, the first group of GOA units is in the working state, and accordingly, the first display partition displays the brightness. The second group of GOA units are in a non-working state, and correspondingly, the second display subarea is turned off.
In the second half of the refresh period of one frame of image, the driving IC 130 transmits the first control signal to the first group of GOA units and transmits the second control signal to the second group of GOA units. That is, in the second half of the refresh period of one frame of image, the first group of GOA units is in the non-working state, and correspondingly, the first display partition is turned off. The second group of GOA units are in working state, and correspondingly, the second display subarea displays brightness.
In a refresh period of one frame of image, the driving IC 130 alternately refreshes the first display section and the second display section by transmitting control signals to the first group of GOA cells and the second group of GOA cells, respectively.
In step 302, the driving IC transmits indication information to the ith luminance sensor every preset period.
The indication information is used for indicating the ith brightness sensor to collect the light signal transmitted through the display screen.
The preset period may be an acquisition period in which the luminance sensor acquires an optical signal transmitted through the display screen, and the acquisition period may be an integral multiple of a frame of image displayed on the display screen.
In the embodiment of the present disclosure, the driving IC 130 may transmit indication information to the luminance sensor 120 located under the ith target display partition when the ith target display partition is turned off during the display of each frame image by the display screen 110. Or sending indication information to the brightness sensor 120 positioned below the ith target display screen when the ith target display partition is turned off every k frames of images.
Assuming that i is 1 and k is 3, when the 1 st target display sub-area is turned off while the display screen 110 displays the 1 st frame image, the driving IC 130 sends indication information to the luminance sensor 120 located below the 1 st target display sub-area. When the 1 st target display sub-area is turned off while the 5 th frame image is displayed, the driving IC 130 transmits indication information to the luminance sensor 120 located below the 1 st target display sub-area.
In step 303, the m brightness sensors collect the light signals transmitted through the display screen and convert the light signals into electrical signals.
Wherein m is a positive integer. Illustratively, m may be 2. The brightness sensor 120 may collect the light signal transmitted through the display screen 110 after receiving the indication information transmitted from the driving IC 130.
In step 304, the m brightness sensors transmit the electrical signals to the main control chip.
In step 305, the main control chip determines the ambient light brightness value according to the electrical signal.
After receiving the m electrical signals transmitted by the m brightness sensors 120, the main control chip 140 may determine the brightness value of the ambient light according to an average value of the m electrical signals.
It should be noted that, the sequence of the steps of the method for determining ambient light brightness provided in the embodiment of the present disclosure may be appropriately adjusted, and the steps may also be increased or decreased according to the circumstances, and any method that can be easily conceived by a person skilled in the art within the technical scope of the present disclosure is included in the protection scope of the present disclosure, and therefore, the description is omitted.
To sum up, the embodiment of the present disclosure provides an ambient light brightness determining method, in which a driving IC transmits a first control signal to an ith group of target GOA units, and sends indication information to an ith luminance sensor when an ith target display partition is turned off, so that the luminance sensor collects light signals transmitted through a display screen. Because the brightness sensor collects the light signals when the target display subarea is turned off, the influence of the brightness of the display screen when the ambient light is determined is eliminated, and the accuracy of the determined ambient light brightness value is improved.
FIG. 8 is a block diagram illustrating an apparatus 400 for determining ambient light level in accordance with an exemplary embodiment. The apparatus 400 includes the components and structures shown in fig. 1. For example, the apparatus 400 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.
Referring to fig. 8, the apparatus 400 may include one or more of the following components: processing components 402, memory 404, power components 406, multimedia components 408, audio components 410, input/output (I/O) interfaces 412, sensor components 414, and communication components 416.
The processing component 402 generally controls overall operation of the apparatus 400, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing component 402 may include one or more processors 420 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 402 can include one or more modules that facilitate interaction between the processing component 402 and other components. For example, the processing component 402 can include a multimedia module to facilitate interaction between the multimedia component 408 and the processing component 402.
The memory 404 is configured to store various types of data to support operations at the apparatus 400. Examples of such data include instructions for any application or method operating on the device 400, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 404 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.
The multimedia component 408 includes a screen that provides an output interface between the device 400 and the user. In some embodiments, the screen may comprise an OLED display screen. If the screen includes a touch panel, the screen may be implemented as a touch screen to receive an input signal from a user. The touch panel includes one or more touch sensors to sense touch, slide, and gestures on the touch panel. The touch sensor may not only sense the boundary of a touch or slide action, but also detect the duration and pressure associated with the touch or slide operation. In some embodiments, the multimedia component 408 includes a front facing camera and/or a rear facing camera. The front camera and/or the rear camera may receive external multimedia data when the apparatus 400 is in an operation mode, such as a photographing mode or a video mode. Each front camera and rear camera may be a fixed optical lens system or have a focal length and optical zoom capability.
The audio component 410 is configured to output and/or input audio signals. For example, audio component 410 includes a Microphone (MIC) configured to receive external audio signals when apparatus 400 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 404 or transmitted via the communication component 416. In some embodiments, audio component 410 also includes a speaker for outputting audio signals.
The I/O interface 412 provides an interface between the processing component 402 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.
The sensor component 414 includes one or more sensors for providing various aspects of status assessment for the apparatus 400. For example, the sensor assembly 414 may detect an open/closed state of the apparatus 400, the relative positioning of the components, such as a display and keypad of the apparatus 400, the sensor assembly 414 may also detect a change in the position of the apparatus 400 or a component of the apparatus 400, the presence or absence of user contact with the apparatus 400, orientation or acceleration/deceleration of the apparatus 400, and a change in the temperature of the apparatus 400. The sensor assembly 414 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 414 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 414 may also include a brightness sensor, an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor, the brightness sensor being located from below the display screen.
The communication component 416 is configured to facilitate wired or wireless communication between the apparatus 400 and other devices. The apparatus 400 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 416 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 416 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.
In an example embodiment, the apparatus 400 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), Programmable Logic Devices (PLDs), Field Programmable Gate Arrays (FPGAs), controllers, micro-controllers, microprocessors, or other electronic components.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (7)
1. An ambient light level determining apparatus, the apparatus comprising:
the display screen comprises a brightness sensor, a driving IC and a main control chip, wherein the brightness sensor, the driving IC and the main control chip are arranged below the display screen, the display screen comprises n display partitions, the n display partitions comprise m target display partitions, and the target display partitions are display partitions positioned above the brightness sensor;
each display subarea comprises a group of GOA units, and the GOA units are used for controlling the display brightness of the display subareas;
the m brightness sensors are respectively connected with the drive IC and the main control chip, and the n groups of GOA units are respectively connected with the drive IC; the driving IC is configured to transmit a first control signal to an ith group of target GOA units, where the first control signal is used to control the ith group of target GOA units to be in a non-operating state, and the ith target display partition is turned off when the ith group of target GOA units are in the non-operating state; the driver IC is further configured to send indication information to the ith luminance sensor every other preset period when the ith target display partition is turned off, where the preset period is an acquisition period in which the luminance sensor acquires an optical signal that penetrates through the display screen, the acquisition period is an integral multiple of a frame of image displayed by the display screen, and the indication information is used to indicate the ith luminance sensor to acquire the optical signal that penetrates through the display screen; the main control chip is further used for determining the ambient light brightness value according to the light signals collected by the m brightness sensors;
wherein i is a positive integer, m is less than or equal to n, and m and n are both positive integers.
2. The device of claim 1, wherein the display screen comprises a first display section and a second display section, the second display section being a display section located above the brightness sensor;
the first display partition includes a first group of the GOA units, and the second display partition includes a second group of the GOA units.
3. The apparatus of claim 2,
the driving IC is configured to transmit a second control signal to a first group of the GOA units and transmit the first control signal to a second group of the GOA units in a first half of a frame image refresh period, where the second control signal is used to control the first group of the GOA units to be in an operating state, and a first display screen displays brightness when the first group of the GOA units is in the operating state;
and the driving IC is further configured to transmit the first control signal to a first group of the GOA units and transmit the second control signal to a second group of the GOA units in a second half of a frame image refresh period.
4. The apparatus of claim 1,
the m brightness sensors are used for collecting optical signals penetrating through the display screen and converting the optical signals into electric signals;
the m brightness sensors are also used for transmitting the electric signals to the main control chip.
5. An ambient light level determination method applied to the ambient light level determination device according to any one of claims 1 to 4, the method comprising:
the driving IC transmits a first control signal to an ith group of target GOA units, the first control signal is used for controlling the ith group of target GOA units to be in a non-working state, and the ith target display partition is turned off when the ith group of target GOA units are in the non-working state;
when the ith target display partition is turned off, the driving IC sends indication information to the ith brightness sensor every other preset period, wherein the preset period is an acquisition period for the brightness sensor to acquire optical signals penetrating through the display screen, the acquisition period is an integral multiple of one frame of image displayed by the display screen, and the indication information is used for indicating the ith brightness sensor to acquire the optical signals penetrating through the display screen;
the main control chip determines the brightness value of the ambient light according to the light signals collected by the m brightness sensors;
wherein m and i are both positive integers.
6. The method of claim 5, wherein said display screen comprises a first display section and a second display section, said second display section being a display section located above said brightness sensor, said first display section comprising a first set of said GOA units, said second display section comprising a second set of said GOA units;
in the first half period of a frame image refreshing period, the driving IC transmits a second control signal to a first group of the GOA units, and transmits the first control signal to a second group of the GOA units, wherein the second control signal is used for controlling the first group of the GOA units to be in a working state, and a first display screen displays brightness when the first group of the GOA units are in the working state;
in the second half of the refresh period of one frame of image, the driver IC transmits the first control signal to the first group of the GOA units and transmits the second control signal to the second group of the GOA units.
7. The method of claim 5, wherein the determining, by the master control chip, the ambient light brightness value according to the light signals collected by the m brightness sensors comprises:
the m brightness sensors collect optical signals penetrating through the display screen and convert the optical signals into electric signals;
the m brightness sensors transmit the electric signals to the main control chip;
and the main control chip determines the brightness value of the environment light according to the electric signal.
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