CN110097850A - Control method, control device, electronic apparatus, and computer-readable storage medium - Google Patents

Abstract

The present application discloses a control method, a control device, an electronic device, and a non-volatile computer-readable storage medium. The display module includes a light-emitting pixel, and the light-emitting pixel includes a light-emitting diode. The control method includes: obtaining the light-emitting duration of the light-emitting pixel; and adjusting the voltage difference across the light-emitting diode according to the light-emitting duration to control the light-emitting diode to emit light. The control method, control device, electronic device, and non-volatile computer-readable storage medium of the embodiment of the present application adjust the voltage across the light-emitting diode according to the light-emitting duration, thereby reducing the influence of the light-emitting brightness of the light-emitting pixel being attenuated due to the increase in the light-emitting duration, so that the light emitted by the light-emitting pixel can meet the display requirements.

Description

Control method, control device, electronic device, and computer-readable storage medium

technical field

The present application relates to the technical field of touch display, and in particular, to a control method, a control device, an electronic device, and a non-volatile computer-readable storage medium.

Background technique

OLED display has the characteristics of self-illumination, wide viewing angle, high contrast, low power consumption and fast response. With the continuous development of OLED display technology, OLED displays have been widely used in electronic devices such as mobile phones and computers. However, the current OLED display has the problem of brightness attenuation.

SUMMARY OF THE INVENTION

Embodiments of the present application provide a control method, a control apparatus, an electronic device, and a non-volatile computer-readable storage medium.

A control method for a display module according to an embodiment of the present application, wherein the display module includes a light-emitting pixel, and the light-emitting pixel includes a light-emitting diode, and the control method includes: acquiring a light-emitting duration of the light-emitting pixel; and according to the light-emitting duration The voltage difference across the light-emitting diode is adjusted to control the light-emitting diode to emit light.

In the control device of a display module according to an embodiment of the present application, the display module includes light-emitting pixels, and the light-emitting pixels include light-emitting diodes, and the control device includes an acquisition module and an adjustment module. The acquiring module is configured to acquire the light-emitting duration of the light-emitting pixel. The adjustment module is configured to adjust the voltage difference between the two ends of the light-emitting diode according to the light-emitting duration, so as to control the light-emitting diode to emit light.

The electronic device according to the embodiment of the present application includes a display module, a processor and a power supply chip, the processor is connected to the power supply chip, and the processor is used for: acquiring the light-emitting duration of the light-emitting pixel; controlling the light-emitting duration according to the light-emitting duration The power supply chip adjusts the voltage difference across the light-emitting diode to control the light-emitting diode to emit light.

One or more non-volatile computer-readable storage media containing computer-executable instructions in the embodiments of the present application, when the computer-executable instructions are executed by a processor, cause the processor to execute the above-mentioned control method.

The control method, control device, electronic device, and non-volatile computer-readable storage medium of the embodiments of the present application adjust the voltage across the light-emitting diode according to the light-emitting duration, thereby reducing the influence of the attenuation of the light-emitting brightness of the light-emitting pixel due to the increase of the light-emitting duration. , the light emitted by the light-emitting pixels can meet the display requirements.

Additional aspects and advantages of embodiments of the present application will be set forth, in part, in the following description, and in part will be apparent from the following description, or learned by practice of the present application.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and readily understood from the following description of embodiments in conjunction with the accompanying drawings, wherein:

FIG. 1 is a schematic flowchart of a control method according to some embodiments of the present application.

FIG. 2 is a schematic block diagram of a control device according to some embodiments of the present application.

FIG. 3 is a schematic structural diagram of an electronic device according to some embodiments of the present application.

FIG. 4 is a partial circuit diagram of a light emitting pixel according to some embodiments of the present application.

FIG. 5 is a schematic diagram of a current curve and a luminance curve of some embodiments of the present application.

FIG. 6 is a schematic diagram of connection of a processor, a power supply chip, and a light-emitting pixel according to some embodiments of the present application.

FIG. 7 is a schematic diagram of a current curve and a luminance curve of some embodiments of the present application.

8 to 11 are schematic flowcharts of control methods according to some embodiments of the present application.

FIG. 12 is a schematic diagram of the connection between the non-volatile computer-readable storage medium and the processor of the control method according to some embodiments of the present application.

Detailed ways

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, only used to explain the embodiments of the present application, and should not be construed as limitations on the embodiments of the present application.

Please refer to FIG. 1 , FIG. 3 and FIG. 4 , the present application provides a control method of the display module 40 . The display module 40 includes a light-emitting pixel 41, and the light-emitting pixel 41 includes a light-emitting diode D1, and the control method includes:

01: obtain the light-emitting duration of the light-emitting pixel 41; and

02: Adjust the voltage difference across the light-emitting diode D1 according to the light-emitting duration to control the light-emitting diode D1 to emit light.

Please refer to FIG. 2 , the present application also provides a control device 10 of the display module 40 . The control method of the present application can be implemented by the control device 10 of the present application. The control device 10 includes an acquisition module 11 and an adjustment module 12 . Step 01 may be implemented by the acquisition module 11 . Step 02 may be implemented by the adjustment module 12 . That is to say, the acquiring module 11 can be used to acquire the light-emitting duration of the light-emitting pixels 41 . The adjustment module 12 can be used to adjust the voltage difference between the two ends of the light-emitting diode D1 according to the lighting duration, so as to control the light-emitting diode D1 to emit light.

Referring to FIG. 3 , the present application further provides an electronic device 100 . The control method of the present application can also be implemented by the electronic device 100 of the present application. The electronic device 100 includes a display module 40 , a power supply chip 30 and a processor 20 . Both steps 01 and 02 may be implemented by the processor 20 . That is to say, the processor 20 can be used to obtain the light-emitting duration of the light-emitting pixel 41, and control the power supply chip 30 to adjust the voltage difference across the light-emitting diode D1 according to the light-emitting duration to control the light-emitting diode D1 to emit light.

The electronic device 100 may be a mobile phone, a tablet computer, a notebook computer, a smart wearable device (smart glasses, a smart helmet, a smart bracelet, a smart watch, etc.), a smart furniture, a virtual reality device, and the like. In this application, the electronic device 100 is a mobile phone as an example for description, but the specific form of the electronic device 100 is not limited to the mobile phone.

The display module 40 includes a plurality of light-emitting pixels 41, and the plurality of light-emitting pixels 41 can be independently controlled. The display module 40 can be an OLED display, a Micro LED display or a Mini LED display. In this application, the display module 40 is an OLED display screen as an example for description. The OLED display screen includes a plurality of light-emitting pixels 41 . As shown in FIG. 4 , each light-emitting pixel 41 includes a light-emitting diode D1, a first transistor Q1, a second transistor Q2, a capacitor C1, a first voltage terminal ELVDD (power supply positive voltage), and a second voltage terminal ELVSS (power supply negative voltage). ). One end of the light emitting diode D1 is connected to the second voltage terminal ELVSS, and the other end is connected to the source of the first transistor Q1. The drain of the first transistor Q1 is connected to the first voltage terminal ELVDD, and the gate is connected to a plate of the capacitor C1. The other plate of the capacitor C1 is connected to the drain of the second transistor Q2. The source of the second transistor Q2 is connected to the source of the first transistor Q1 and the light emitting diode D1. The first voltage terminal ELVDD and the second voltage terminal ELVSS are both connected to the power supply chip 30, and the power supply chip 30 can provide voltages for the first voltage terminal ELVDD and the second voltage terminal ELVSS, so that the first voltage terminal ELVDD and the second voltage terminal ELVSS A voltage difference is formed on the line where the first transistor Q1 and the light emitting diode D1 are located. Capacitor C1 is a storage capacitor that can store charges. When the second transistor Q2 is turned off, the charges stored in the capacitor C1 can be applied to the gate and source of the first transistor Q1 to drive the light-emitting diode D1 to emit light. In addition, when the first voltage terminal ELVDD and the second voltage terminal ELVSS form a voltage difference (for example, the voltage of the first voltage terminal ELVDD is +7V, the voltage of the second voltage terminal ELVSS is -2V, and the voltage difference is 9V), the first voltage terminal A current is formed on the line where the transistor Q1 and the light-emitting diode D1 are located, and the current also drives the light-emitting diode D1 to emit light. In some embodiments, the display module 40 may be integrated with a touch module to have both a touch function and a display function.

As shown in FIG. 5 , the current OLED display screen has the problem of organic light-emitting material aging. The aging of the organic light-emitting material causes the light-emitting brightness of the light-emitting pixels 41 in the OLED display screen to be driven by the same driving current as the use time increases. decrease. If the same light-emitting pixel 41 is driven with the same driving current after the OLED display screen has been used for a long time, the brightness of the light emitted by the light-emitting pixel 41 will not be able to meet the brightness requirements of the OLED display screen, which will affect the viewing of the user. experience. In addition, for the OLED display screen integrated with the optical fingerprint application, after the brightness is reduced, the light reflected by the user's finger and received by the light sensor will also be reduced accordingly, which will lead to the final generated fingerprint image is not clear enough, further affect the accuracy of optical fingerprint recognition.

The control method of the embodiment of the present application firstly counts the light-emitting duration of the light-emitting pixel 41, and then adjusts the driving current of the light-emitting pixel 41 according to the light-emitting duration. The light-emitting duration of the light-emitting pixel 41 refers to the total duration of the light-emitting diode D1 in the light-emitting pixel 41 in the light-emitting state. For example, if the display module 40 of the electronic device 100 displays a picture, the light-emitting duration T of the light-emitting pixel 41 is the display module 40 displays. The cumulative time T1 that the screen keeps the light-emitting diode D1 in the light-emitting state, that is, T=T1; if the light-emitting pixel 41 of the electronic device 100 is subjected to optical fingerprint recognition, the light-emitting time T of the light-emitting pixel 41 is the optical fingerprint recognition, so that the light-emitting diode D1 is in the light-emitting state If the display module 40 of the electronic device 100 displays the screen, and the light-emitting pixel 41 of the electronic device 100 has performed optical fingerprint recognition, when the display screen and the optical fingerprint recognition are performed in time-sharing, Then the light-emitting duration T of the light-emitting pixel 41 is: the sum of the first cumulative duration T1 during which the display module 40 displays the screen to make the light-emitting diode D1 in the light-emitting state and the second cumulative duration T2 for the optical fingerprint recognition to keep the light-emitting diode D1 in the light-emitting state, that is, T=T1+T2; if the display module 40 of the electronic device 100 displays a screen, and the light-emitting pixel 41 of the electronic device 100 has performed optical fingerprint recognition, when the display screen and the optical fingerprint recognition are performed simultaneously, the light-emitting pixel 41 The light-emitting duration T is: the first cumulative duration T1 during which the display module 40 displays the screen so that the light-emitting diode D1 is in the light-emitting state, that is, T=T1; if the display module 40 of the electronic device 100 displays the screen, and the light-emitting pixels of the electronic device 41 has carried out optical fingerprint identification (the display screen and the optical fingerprint identification can be carried out simultaneously or in a time-sharing manner), then the light-emitting duration T of the light-emitting pixel 41 is: T=T11+(T12+T2), where T11 means that the display screen and the optical fingerprint are at the same time When the display module 40 displays the picture so that the LED D1 is in the light-emitting state, the first cumulative duration T11, (T11+T2) refers to the time-sharing between the display module 40 and the optical fingerprint. The display module 40 displays the picture so that the LED D1 is in The first cumulative duration T12 of the light-emitting state, and the second cumulative duration T2 of the light-emitting diode D1 being in the light-emitting state when the optical fingerprint recognition is performed in a time-sharing manner between the display screen and the optical fingerprint.

The light-emitting duration T is counted by the processor 20 . The display module 40 generally includes a plurality of light-emitting pixels 41 , and the statistical methods of the light-emitting duration T of the light-emitting pixels 41 obtained in step 01 may be various. For example, a statistical method may be: considering the plurality of light-emitting pixels 41 as a whole, the plurality of light-emitting pixels 41 have only one light-emitting duration T, and the light-emitting duration T is when the display module 40 is turned on (at this time, all the light-emitting pixels in the display module 40 are turned on). The pixels 41 can all be turned on to display the screen, such as the interface of the mobile phone entering the theme page; or, part of the light-emitting pixels 41 of the display module 40 can be turned on to display the fingerprint area, such as the screen of the mobile phone is black but the fingerprint area is displayed to facilitate the user to unlock the interface; or, At one time, all the light-emitting pixels 41 of the display module 40 are turned on to display the picture, and at another time, some light-emitting pixels 41 are turned on to display the fingerprint area; or, some light-emitting pixels 41 of the display module 40 are turned on to display the picture, and The length of time when some light-emitting pixels 41 are turned on to display the fingerprint area, for example); another statistical method may be: each light-emitting pixel 41 is viewed separately, and each light-emitting pixel 41 has a light-emitting time duration T, for example, including 4 light-emitting pixels 41 , the light-emitting durations of the four light-emitting pixels 41 are Ta, Tb, Tc, and Td, respectively, and each light-emitting duration Ta, Tb, Tc, and Td can be calculated in the aforementioned manner, and will not be repeated here. The processor 20 counts the light-emitting duration of each light-emitting pixel 41 respectively, and specifically, takes the time point when each light-emitting pixel 41 is first turned on as the starting time, and counts the light-emitting duration of each light-emitting pixel 41 . This statistical method is suitable for the display module 40 integrated with the optical fingerprint application. Moreover, when each light-emitting pixel 41 is viewed separately, and each light-emitting pixel 41 has a light-emitting duration, adjusting the voltage difference across the light-emitting diode according to the light-emitting duration to control the light-emitting diode to emit light means: according to the light-emitting pixel 41 The light-emitting duration adjusts the voltage difference across the light-emitting diode D1 in the light-emitting pixel 41 to control the light-emitting diode D1 to emit light. The voltage difference between the terminals is used to control the light-emitting diode Dd to emit light. It can be understood that, in the display module 40 integrated with the optical fingerprint application, the light-emitting duration of the light-emitting pixels 41 for emitting light during the fingerprint identification process is longer than the light-emitting duration of the remaining light-emitting pixels 41 . If the light-emitting duration of the display module 40 is directly used as the light-emitting duration of the light-emitting pixels 41, since the actual light-emitting duration of the light-emitting pixels 41 that emit light during the fingerprint identification process is greater than the light-emitting duration of the display module 40, then, at this time Adjusting the driving current of the light-emitting pixels 41 used for emitting light in the fingerprint recognition process by the light-emitting duration of the display module 40 may cause the light-emitting brightness of the light-emitting pixels 41 used for emitting light in the fingerprint recognition process to not meet the actual requirements. The brightness of each light-emitting pixel 41 is directly adjusted according to the light-emitting duration of each light-emitting pixel 41 , and such a problem will not occur.

In one example, the processor 20 may update the lighting duration every predetermined time. For example, the luminous duration is updated every other day. Of course, the predetermined time can also be 1 hour, 5 hours, 12 hours, 2 days, 3 days, 5 days, 8 days, 10 days and so on. Then, when the display module 40 is turned on, the processor 20 can adjust the driving current of the light-emitting pixel 41 according to the last updated light-emitting duration. In this update mode, it may happen that the lighting duration is updated during the lighting process of the display module 40 . For example, if the display module 40 starts to light up continuously at 10:00:00 on April 1, 2019, and needs to be updated at 10:02:00 on April 1, 2019, then at 10:00:00 to 10:02 :00 During these two minutes, the driving current of the light-emitting pixel 41 is adjusted according to the light-emitting duration before the update. During the period from 10:02:00 to the next update time, the driving current of the light-emitting pixel 41 It is adjusted according to the lighting duration updated at 10:02:00.

In another example, the processor 20 may also update the lighting duration every time the display module 40 is turned off. Then, when the display module 40 is turned on next time, the processor 20 adjusts the driving current of the light-emitting pixel 41 according to the newly updated light-emitting duration.

Referring to FIG. 6 , the processor 20 adjusts the driving current of the light-emitting pixels 41 according to the light-emitting duration. Specifically, it can be realized by adjusting the voltage difference between the two ends of the light-emitting diode D1 in each light-emitting pixel 41, that is, by adjusting the first voltage terminal ELVDD. It is realized by the voltage difference with the second voltage terminal ELVSS. The longer the light-emitting period, the greater the voltage difference between the first voltage terminal ELVDD and the second voltage terminal ELVSS, and the greater the driving current. The brightness of the light emitted by the light-emitting diode D1 under the driving of a larger driving current can reach the actual required brightness. The voltages of the first voltage terminal ELVDD and the second voltage terminal ELVSS are provided by the power supply chip 30 , and the power supply chip 30 is provided with a voltage by the power supply 50 . After the processor 20 counts the lighting duration, it will output a control signal corresponding to the lighting duration to the power supply chip 30 when the display module 40 is lit. The control signal instructs the power supply chip 30 to be the first voltage terminal ELVDD and the second voltage terminal. The ELVSS provides a voltage corresponding to the control signal, so as to realize the adjustment of the driving current of the light-emitting pixel 41 .

As shown in FIG. 7 , the brightness curve 1 is the curve of the light-emitting brightness of the light-emitting pixel 41 decaying with time when the driving current is not adjusted according to the light-emitting duration, and the brightness curve 2 is the light-emitting brightness of the light-emitting pixel 41 after the driving current is adjusted according to the light-emitting duration. Time decay curve. The brightness curve 1 is relatively steep, the brightness curve 2 is relatively gentle, and the attenuation speed corresponding to the brightness curve 2 is obviously slower than the attenuation speed corresponding to the brightness curve 1. Adjusting the driving current according to the light-emitting duration can make the brightness of the light-emitting pixel 41 meet the requirement and increase the use period of the light-emitting pixel 41 .

Referring to FIG. 8 , in some embodiments, step 02 adjusting the voltage difference across the light-emitting diode D1 according to the light-emitting duration includes:

021 : Adjust the power supply voltage of the first voltage terminal ELVDD and/or the power supply voltage ELVSS of the second voltage terminal according to the lighting duration.

Referring to FIG. 2 again, in some embodiments, step 021 may be implemented by the adjustment module 12 . That is to say, the adjusting module 12 can also be used to adjust the power supply voltage of the first voltage terminal ELVDD and/or the power supply voltage ELVSS of the second voltage terminal according to the lighting duration.

Referring to FIG. 3 again, in some embodiments, step 021 may also be implemented by the processor 20 . That is to say, the processor 20 can also be used to control the power supply chip 30 to adjust the power supply voltage of the first voltage terminal ELVDD and/or the power supply voltage ELVSS of the second voltage terminal according to the lighting duration.

Specifically, referring to FIGS. 4 and 6 , in one example, the processor 20 can control the power supply chip 30 to adjust the power supply voltage of the first voltage terminal ELVDD according to the lighting duration, while the power supply voltage of the second voltage terminal ELVSS remains unchanged. For example, when the lighting time is 1000h, the power supply chip 30 adjusts the power supply voltage of the first voltage terminal ELVDD to +10V according to the control signal, while the power supply voltage of the second voltage terminal ELVSS is still -2V. It should be noted that the above-mentioned 1000h, +10V, and -2V are only examples.

In another example, the processor 20 may control the power supply chip 30 to adjust the power supply voltage of the second voltage terminal ELVSS according to the lighting duration, while the power supply voltage of the first voltage terminal ELVDD remains unchanged. For example, when the lighting time is 1000h, the power supply chip 30 adjusts the power supply voltage of the second voltage terminal ELVSS to -5V according to the control signal, while the power supply voltage of the first voltage terminal ELVDD is still +7V. It should be noted that the above 1000h, +7V, and -5V are only examples.

In yet another example, the processor 20 may control the power supply chip 30 to simultaneously adjust the power supply voltage of the first voltage terminal ELVDD and the power supply voltage of the second voltage terminal ELVSS according to the lighting duration. For example, when the lighting time is 1000h, the power supply chip 30 adjusts the power supply voltage of the first voltage terminal ELVDD to +9V according to the control signal, and adjusts the power supply voltage of the second voltage terminal ELVSS to -3V at the same time. It should be noted that the above-mentioned 1000h, +9V, and -3V are only examples.

In this way, the voltage difference between the first voltage terminal ELVDD and the second voltage terminal ELVSS is increased, thereby increasing the driving current of the light-emitting pixel 41 to ensure that the light-emitting luminance of the light-emitting pixel 41 can meet the requirements.

Referring to FIG. 9, in some embodiments, the control method further includes before step 02:

03: Acquire the color information of the light-emitting pixel 41;

Step 02 Adjusting the voltage difference across the light-emitting diode D1 according to the light-emitting duration includes:

022: Adjust the voltage difference across the light-emitting diode D1 according to the color information and the light-emitting duration.

Referring to FIG. 2 again, in some embodiments, step 03 may be implemented by the obtaining module 11 . Step 022 may be implemented by the adjustment module 12 . That is to say, the acquisition module 11 can also be used to acquire the color information of the light-emitting pixels 41 . The adjustment module 12 can also be used to adjust the voltage difference between the two ends of the light emitting diode D1 according to the color information and the lighting duration.

Referring to FIG. 3 again, in some embodiments, steps 03 and 022 may also be implemented by the processor 20 . That is to say, the processor 20 can also be used to obtain the color information of the light-emitting pixel 41, and adjust the voltage difference across the light-emitting diode D1 according to the color information and the light-emitting duration.

Specifically, since the organic light-emitting materials doped in different light-emitting pixels 41 may be different, and the decay and aging speeds of different organic light-emitting materials are different, then, as the light-emitting time increases, the light-emitting pixels 41 of different colors emit light. The amount of attenuation of brightness may be different. Therefore, when adjusting the drive current of each light-emitting pixel 41 . In addition to the influence of the light-emitting duration on the luminance attenuation, the influence of the color information of the light-emitting pixels 41 on the luminance attenuation should also be considered.

For example, for the light-emitting pixel 41 that emits blue light, after the light-emitting time reaches about 15000h, the light-emitting brightness of the light-emitting pixel 41 will attenuate to about 50% of the initial brightness; for the light-emitting pixel 41 that emits green light, the light-emitting time reaches After about 50,000 hours, the light-emitting luminance of the light-emitting pixel 41 will attenuate to 50% of the initial luminance. That is, the luminance decay speed of the light-emitting pixel 41 that emits blue light is greater than that of the green light-emitting pixel 41 . Then, under the same light-emitting duration, the driving current of the light-emitting pixel 41 that emits blue light needs to be greater than the driving current of the light-emitting pixel 41 that emits green light. Correspondingly, the voltage difference across the LED D1 of the light-emitting pixel 41 that emits blue light is greater than The voltage difference between the two ends of the light emitting diode D1 of the green light emitting pixel 41 ensures that the blue light emitting pixel 41 can emit light with sufficient brightness.

Wherein, adjusting the voltage difference between the two ends of the light emitting diode D1 according to the color information and the lighting duration includes adjusting the power supply voltage of the first voltage terminal ELVDD and/or adjusting the power supply voltage of the second voltage terminal ELVSS.

The control method of this embodiment jointly adjusts the voltage across the light-emitting diode D1 of the light-emitting pixel 41 based on two factors, the light-emitting duration and the color information of the light-emitting pixel 41, so that the driving current is sufficient to drive the corresponding light-emitting diode D1 to emit light with sufficient brightness, and further The display effect of the display module 40 is guaranteed.

Referring to FIG. 10, in some embodiments, the control method includes after step 02:

04: Obtain the brightness of the display module 40;

Step 02 Adjusting the voltage difference across the light-emitting diode D1 according to the light-emitting duration includes:

023: Adjust the voltage difference across the light-emitting diode D1 according to the brightness and light-emitting duration.

Referring to FIG. 2 again, in some embodiments, step 04 may be implemented by the obtaining module 11 . Step 023 may be implemented by the adjustment module 12 . That is to say, the obtaining module 11 can also be used to obtain the brightness of the display module 40 . The adjustment module 12 can also be used to adjust the voltage difference between the two ends of the light emitting diode D1 according to the brightness and the lighting duration.

Referring to FIG. 3 again, in some embodiments, steps 04 and 023 may also be implemented by the processor 20 . That is to say, the processor 20 can also be used to obtain the brightness of the display module 40 and adjust the voltage difference between the two ends of the light emitting diode D1 according to the brightness and the lighting duration.

The brightness of the display module 40 refers to the brightness of the display to be used by the display module 40 determined by the processor 20 according to the current ambient brightness.

Specifically, when the ambient brightness is different, the display module 40 usually needs to display at different brightness. For example, when the ambient brightness is high, the display module 40 needs to use a higher brightness for display, so that the user can clearly see the display content of the display module 40 when the ambient brightness is low, the display module 40 needs to use a higher brightness. Displaying at low brightness can avoid the problem that the brightness is too high and the user feels dazzling when viewing.

Table 1 shows the corresponding relationship among the control signal, the second voltage terminal ELVSS and the first voltage terminal ELVDD. When the lighting duration is not considered, the processor 20 determines the brightness required by the display module 40 according to the ambient brightness, and generates control signals of types A, B, C, D corresponding to the brightness... When the lighting duration is not considered, If the type of the control signal is A, the corresponding first voltage terminal ELVDD is m, and the second voltage terminal ELVSS is a; if the type of the control signal is B, the corresponding first voltage terminal ELVDD is m, and the second voltage terminal is a ELVSS is b; if the type of the control signal is C, the corresponding first voltage terminal ELVDD is m, and the second voltage terminal ELVSS is c; if the type of the control signal is D, the corresponding first voltage terminal ELVDD is m, The second voltage terminal ELVSS is d...

When considering the lighting duration, the processor 20 determines the brightness required by the display module 40 according to the ambient brightness, and generates control signal types A, B, C, D corresponding to the brightness and lighting duration. In brightness, if the control signal type is A, the corresponding first voltage terminal ELVDD is m, and the second voltage terminal ELVSS is a-n1; if the control signal type is B, the corresponding first voltage terminal ELVDD is m , the second voltage terminal ELVSS is b-n2; if the type of the control signal is C, the corresponding first voltage terminal ELVDD is m, and the second voltage terminal ELVSS is c-n3; if the type of the control signal is D, the corresponding The first voltage terminal ELVDD is m, and the second voltage terminal ELVSS is d-n4... n1, n2, n3, n4, etc. are the adjustment amounts of the second voltage terminal ELVSS determined according to the lighting duration.

Table 1

control signal ELVSS ELVDD A a-n1 m B b-n2 m C c-n3 m D d-n4 m … … …

For the same control signal, when the light-emitting time is longer, the adjustment amount of the second voltage terminal _ELVSS is larger. The adjustment amount of the second voltage terminal ELVSS is n ₅₀₀₀ , then, n ₅₀₀₀ >n ₁₀₀₀ . In this way, when the lighting time is long, increasing the adjustment amount of the second voltage terminal ELVSS can increase the voltage difference between the first voltage terminal ELVDD and the second voltage terminal ELVSS, thereby increasing the driving current.

The control method of this embodiment adjusts the voltage difference across the light-emitting diode D1 based on two factors, the light-emitting duration and the brightness, so that the light-emitting pixel 41 can emit light with sufficient brightness to meet the display brightness requirement of the display module 40 in the current environment.

It should be noted that Table 1 only shows the way of adjusting the power supply voltage of the second voltage terminal ELVSS according to the lighting duration and brightness. In other embodiments, the power supply of the first voltage terminal ELVDD may also be adjusted according to the lighting duration and brightness. voltage, or adjust the power supply voltage of the first voltage terminal ELVDD and the power supply voltage of the second voltage terminal ELVSS, etc. according to the lighting duration and brightness.

Referring to FIG. 11, in some embodiments, the control method includes after step 02:

05: Obtain the pixel area of the light-emitting pixel 41;

Step 02 Adjusting the voltage difference across the light-emitting diode D1 according to the light-emitting duration includes:

024: Adjust the voltage difference across the light-emitting diode D1 according to the pixel area and the light-emitting duration.

Referring to FIG. 2 again, in some embodiments, step 05 may be implemented by the obtaining module 11 . Step 024 may be implemented by the adjustment module 12 . That is to say, the obtaining module 11 can also be used to obtain the pixel area of the light-emitting pixel 41 . The adjustment module 12 can also be used to adjust the voltage difference across the light-emitting diode D1 according to the pixel area and the light-emitting duration.

Referring to FIG. 3 again, in some embodiments, steps 05 and 024 may also be implemented by the processor 20 . That is to say, the processor 20 can also be used to obtain the pixel area of the light-emitting pixel 41 and adjust the voltage difference across the light-emitting diode D1 according to the pixel area and the light-emitting duration.

Specifically, the pixel area of the light-emitting pixel 41 has an influence on the luminance decay speed of the light-emitting pixel 41 . In general, the use period of the light-emitting pixel 41 with a larger pixel area is shorter, in other words, the brightness of the light emitted by the light-emitting pixel 41 with a larger pixel area is faster. Then, when the light-emitting time is the same, the voltage difference across the light-emitting diode D1 of the light-emitting pixel 41 with a larger pixel area is correspondingly larger. For example, the pixel area of one light-emitting pixel 41 is S1, and the pixel area of the other light-emitting pixel 41 is S2. If the light-emitting durations of the two light-emitting pixels 41 are the same, and S1>S2, then the voltage difference across the light-emitting diode D1 of the light-emitting pixel 41 with the pixel area S1 is greater than the voltage across the light-emitting diode D1 of the light-emitting pixel 41 with the pixel area S2 Poor; if S1=S2, the light-emitting time length of the light-emitting pixel 41 with a pixel area of S1 is T1, the light-emitting time length of the light-emitting pixel 41 with a pixel area of S2 is T2, and T1>T2, then the light-emitting pixel 41 with a pixel area of S1 emits light. The voltage difference across the diode D1 is greater than the voltage difference across the light-emitting diode D1 of the light-emitting pixel 41 with the pixel area S2; if the pixel areas of the two light-emitting pixels 41 are different and the light-emitting durations are also different, the pixel area of each light-emitting pixel 41 needs to be adjusted accordingly. The required voltage difference across the light-emitting diode D1 of the light-emitting pixel 41 is determined jointly by the area and the light-emitting duration.

Wherein, adjusting the voltage difference between the two ends of the light emitting diode D1 according to the pixel area and the light emission duration includes adjusting the power supply voltage of the first voltage terminal ELVDD and/or adjusting the power supply voltage of the second voltage terminal ELVSS.

The control method of this embodiment jointly adjusts the voltage across the light-emitting diode D1 of the light-emitting pixel 41 based on two factors, the light-emitting duration and the pixel area of the light-emitting pixel 41 , and reduces the influence of the increase in the light-emitting duration and the large attenuation of the light-emitting brightness of the light-emitting pixel. , and reduce the influence of the size of the pixel area on the attenuation of the light-emitting brightness of the light-emitting pixel, so that the driving current is sufficient to drive the corresponding light-emitting diode D1 to emit light of sufficient brightness, further ensuring the display effect of the display module 40 .

In some embodiments, the control method further includes acquiring a duty cycle of the display module 40 . The duty cycle of the display module 40 refers to the ratio of the gate time of the driving line for driving the light-emitting pixel 41 to emit light to the period during which the display module 40 displays one frame of image. Step 02 further includes adjusting the voltage across the light-emitting diode D1 according to the duty cycle and the light-emitting duration. The acquisition of the duty cycle of the display module 40 may be implemented by the acquisition module 11 or the processor 20 . Adjusting the voltage difference between the two ends of the light emitting diode D1 according to the duty cycle and the lighting duration may be implemented by the adjusting module 12 or the processor 20 . In addition, adjusting the voltage difference between the two ends of the light emitting diode D1 according to the duty cycle and the lighting duration includes adjusting the power supply voltage of the first voltage terminal ELVDD and/or adjusting the power supply voltage of the second voltage terminal ELVSS.

Specifically, the larger the duty cycle of the display module 40 is, the longer the usage period of the display module 40 is. The slower the brightness decay. Then, when the light-emitting time is the same, the voltage difference between the two ends of the light-emitting diode D1 of the light-emitting pixel 41 in the display module 40 with a large duty ratio should be small, and the light-emitting pixel 41 in the display module 40 with a small duty ratio should emit light. The voltage difference across diode D1 should be large. The voltage difference across the light-emitting diode D1 of the light-emitting pixel 41 is adjusted jointly according to the duty cycle of the display module 40 and the light-emitting duration of the light-emitting pixel 41 , which can further ensure the display effect of the display module 40 .

In some embodiments, at least two can be selected from the color information of the light-emitting pixel 41, the brightness of the display module 40, the pixel area of the light-emitting pixel 41, and the duty cycle of the display module 40 to be used together with the light-emitting duration. It is used to adjust the voltage difference across the light-emitting diode D1. For example, the voltage difference between the two ends of the light-emitting diode D1 is adjusted according to the light-emitting duration, the color information of the light-emitting pixel 41, and the brightness of the display module 40. 40 to adjust the voltage difference across the light-emitting diode D1, according to the light-emitting duration, the color information of the light-emitting pixel 41, the brightness of the display module 40, the pixel area of the light-emitting pixel 41, and the duty cycle of the display module 40. The voltage difference between the two ends of the light emitting diode D1 and so on, so as to maximize the display effect of the display module 40 .

Referring to FIG. 12, the present application also provides one or more non-volatile computer-readable storage media 60 containing computer-executable instructions. When the computer-executable instructions are executed by the processor 70, the processor 70 executes any one of the above The control method described in this embodiment. The processor 70 may be the processor 20 shown in FIG. 3 .

For example, the computer-executable instructions, when executed by the processor 70, cause the processor 70 to perform the following steps:

01: obtain the light-emitting duration of the light-emitting pixel 41; and

02: Adjust the voltage difference across the light-emitting diode D1 according to the light-emitting duration to control the light-emitting diode D1 to emit light.

For another example, when the computer-executable instructions are executed by the processor 70, the processor 70 is caused to perform the following steps:

021 : Adjust the power supply voltage of the first voltage terminal ELVDD and/or the power supply voltage ELVSS of the second voltage terminal according to the lighting duration.

For another example, when the computer-executable instructions are executed by the processor 70, the processor 70 is caused to perform the following steps:

03: Acquire the color information of the light-emitting pixel 41;

022: Adjust the voltage difference across the light-emitting diode D1 according to the color information and the light-emitting duration.

In the description of this specification, reference to the description of the terms "certain embodiments," "in one example," "exemplarily," etc. means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in the in at least one implementation or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.

Any description of a process or method in the flowcharts or otherwise described herein may be understood to represent a module, segment or portion of code comprising one or more executable instructions for implementing a specified logical function or step of the process , and the scope of the preferred embodiments of the present application includes alternative implementations in which the functions may be performed out of the order shown or discussed, including performing the functions substantially concurrently or in the reverse order depending upon the functions involved, which should It is understood by those skilled in the art to which the embodiments of the present application belong.

Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limitations to the present application. Embodiments are subject to variations, modifications, substitutions and alterations.

Claims (12)

1. a kind of control method of display module, which is characterized in that the display module includes light emitting pixel, the light emitting pixel Including light emitting diode, the control method includes:

Obtain the luminous duration of the light emitting pixel；With

The voltage difference at the light emitting diode both ends is adjusted, according to the luminous duration to control the lumination of light emitting diode.

2. control method according to claim 1, which is characterized in that the light emitting pixel includes first voltage end and second Voltage end, the first voltage end are connect with power supply chip with the second voltage end, described according to the luminous duration tune Save the voltage difference at the light emitting diode both ends, comprising:

The supply voltage at the first voltage end and/or the power supply electricity at the second voltage end are adjusted according to the luminous duration Pressure.

3. control method according to claim 1 or 2, which is characterized in that the control method further include:

Obtain the colouring information of the light emitting pixel；

The voltage difference for adjusting the light emitting diode both ends according to the luminous duration includes:

The voltage difference at the light emitting diode both ends is adjusted according to the colouring information and the luminous duration.

4. control method according to claim 1 or 2, which is characterized in that the control method further include:

Obtain the brightness of the display module；

The voltage difference for adjusting the light emitting diode both ends according to the luminous duration includes:

The voltage difference at the light emitting diode both ends is adjusted according to the brightness and the luminous duration.

5. control method according to claim 1 or 2, which is characterized in that the control method further include:

Obtain the elemental area of the light emitting pixel；

The voltage difference for adjusting the light emitting diode both ends according to the luminous duration includes:

The voltage difference at the light emitting diode both ends is adjusted according to the elemental area and the luminous duration.

6. a kind of control device of display module, which is characterized in that the display module includes light emitting pixel, the light emitting pixel Including light emitting diode, the control device includes:

Module is obtained, for obtaining the luminous duration of the light emitting pixel；With

Adjustment module, for adjusting the voltage difference at the light emitting diode both ends according to the luminous duration, to control the hair Optical diode shines.

7. a kind of electronic equipment, which is characterized in that the electronic equipment includes display module, processor and power supply chip, described Processor is connect with the power supply chip, and the processor is used for:

Obtain the luminous duration of the light emitting pixel；With

The voltage difference that the power supply chip adjusts the light emitting diode both ends is controlled according to the luminous duration, described in control Lumination of light emitting diode.

8. electronic equipment according to claim 7, which is characterized in that the light emitting pixel includes first voltage end and second Voltage end, the first voltage end are connect with the power supply chip with the second voltage end, and the processor is also used to:

The supply voltage and/or described second that the power supply chip adjusts the first voltage end is controlled according to the luminous duration The supply voltage of voltage end.

9. electronic equipment according to claim 7 or 8, which is characterized in that the processor is also used to:

Obtain the colouring information of the light emitting pixel；With

The electricity that the power supply chip adjusts the light emitting diode both ends is controlled according to the colouring information and the luminous duration Pressure difference.

10. electronic equipment according to claim 7 or 8, which is characterized in that the processor is also used to:

Obtain the brightness of the display module；With

The voltage difference that the power supply chip adjusts the light emitting diode both ends is controlled according to the brightness and the luminous duration.

11. electronic equipment according to claim 7 or 8, which is characterized in that the processor is also used to:

Obtain the elemental area of the light emitting pixel；With

The electricity that the power supply chip adjusts the light emitting diode both ends is controlled according to the elemental area and the luminous duration Pressure difference.

12. one or more includes the non-volatile computer readable storage medium storing program for executing of computer executable instructions, when the calculating When machine executable instruction is executed by processor, so that the processor perform claim requires controlling party described in 1-5 any one Method.