WO2024032126A1

WO2024032126A1 - 3d display technique-based backlight control method and apparatus, medium, and device

Info

Publication number: WO2024032126A1
Application number: PCT/CN2023/098954
Authority: WO
Inventors: 林科; 曾露; 于洋; 江沛
Original assignee: 惠州Tcl移动通信有限公司
Priority date: 2022-08-09
Filing date: 2023-06-07
Publication date: 2024-02-15
Also published as: CN117198227A

Abstract

Embodiments of the present application provide a 3D display technique-based backlight control method and apparatus, a medium, and a device. The method comprises: acquiring a scanning time corresponding to each liquid crystal area on a liquid crystal display screen; acquiring a corresponding liquid crystal molecule twisting time when charging of liquid crystals in the last row in a liquid crystal area is completed; and calculating an on time of a light source area corresponding to the liquid crystal area. The embodiments of the present application ensure that the picture that a user watches is a picture displayed after liquid crystals deflect and become stable.

Description

Backlight control method, device, media and equipment based on 3D display technology

This application requires the priority of the Chinese patent application submitted to the China Patent Office on August 9, 2022, with the application number 2022109528243 and the invention title "Backlight control method, device, medium and equipment based on 3D display technology", and its entire content incorporated herein by reference.

Technical field

This application relates to a backlight control method, device, medium and equipment based on 3D display technology.

Background technique

Each row of liquid crystal in the LCD screen is composed of thin film transistors. After the thin film transistors are turned on by the gate circuit, the source circuit is responsible for charging. During this period, the backlight module on the back of the LCD screen is responsible for providing light source illumination. Each of the liquid crystals Each pixel is responsible for the passage of light and the amount of light passing through, thereby forming a color image with the cooperation of color filters. This is the display principle of an ordinary LCD screen. It features a color filter and a backlight module that is always on.

Since the liquid crystal on the LCD screen will deflect under the action of the source circuit, the picture displayed by the liquid crystal is unstable during the deflection process. If the backlight module is always on at this time, it will cause the user to see What we see is the picture content when the LCD has not reached stability. At this time, if the user watches the LCD screen through 3D glasses, he will see the picture crosstalk problem. "Crosstalk" means that the opening and closing of the glasses shutter is out of sync with the left and right eye images, resulting in superposition between the two images seen by the left and right eyes, resulting in blurred images and seriously affecting viewing.

Application content

Embodiments of the present application provide a backlight control method, device, medium and equipment based on 3D display technology. By controlling the opening and closing time of the backlight module, that is, until the current liquid crystal row on the liquid crystal display screen deflects to the corresponding picture and stabilizes. Only then turn on the backlight module, and turn it off when the next image frame is transmitted. The current backlight module ensures that the picture the user sees is after the liquid crystal deflection is stabilized, avoiding the problem of picture crosstalk when the user views the picture on the LCD screen through 3D glasses.

On the one hand, embodiments of the present application provide a backlight control method based on 3D display technology, including:

Divide the N rows of liquid crystals on the LCD display into regions to obtain several liquid crystal regions;

Divide the light source of the backlight module into regions to obtain several light source regions corresponding to the several liquid crystal regions;

Get the scanning time corresponding to each LCD area on the LCD screen;

Obtain the twisting time of the liquid crystal molecules corresponding to the completion of charging of the liquid crystal located in the last row in the liquid crystal area;

The light source area turn-on time corresponding to the liquid crystal area is calculated based on the scanning time and the liquid crystal molecule twist time.

In the backlight control method based on 3D display technology described in the embodiment of the present application, the light source area turn-on time corresponding to each light source area of the backlight module is turned on in sequence according to the scanning order of each liquid crystal area of the liquid crystal display screen.

In the backlight control method based on 3D display technology described in the embodiment of this application, obtaining the scanning time corresponding to each liquid crystal area on the liquid crystal display screen includes:

Obtain the scanning time corresponding to each row of liquid crystals in the liquid crystal area and the number of liquid crystal rows included in the liquid crystal area;

The scanning time corresponding to the liquid crystal area is calculated based on the scanning time corresponding to each row of liquid crystal and the number of liquid crystal rows.

In the backlight control method based on 3D display technology described in the embodiment of the present application, obtaining the scanning time corresponding to each row of liquid crystals in the liquid crystal area includes:

Obtain the gate drive start time and gate drive end time corresponding to each row of liquid crystal. The gate drive time is used to indicate the scan start time corresponding to each row of liquid crystal. The gate drive end time is used to indicate the corresponding scan start time of each row of liquid crystal. The scan end time;

The scanning time corresponding to each row of liquid crystals is calculated based on the scanning start time and the scanning end time.

In the backlight control method based on 3D display technology described in the embodiment of the present application, the calculation of the light source area turn-on time corresponding to the liquid crystal area based on the scanning time and the liquid crystal molecule twist time includes:

The light source area turn-on time corresponding to the liquid crystal area is calculated by calculating the scanning time corresponding to the liquid crystal area and the twist time of the liquid crystal molecules.

In the backlight control method based on 3D display technology described in the embodiment of the present application, the complete display time of each image frame on the liquid crystal display screen is less than or equal to the preset time length.

In the backlight control method based on 3D display technology described in the embodiment of this application, the method further includes:

Obtain the synchronization control timing sequence generated according to the image frame sequence, and control the opening and closing sequence of the backlight module according to the synchronization control timing sequence.

Correspondingly, on the other hand, the embodiment of the present application also provides a backlight control device based on 3D display technology, including:

The first dividing module is used to divide the N rows of liquid crystals on the liquid crystal display into areas to obtain several liquid crystal areas;

The second dividing module is used to divide the light source of the backlight module into regions to obtain several light source regions corresponding to the several liquid crystal regions;

The first acquisition module is used to acquire the scanning time corresponding to each liquid crystal area on the LCD screen;

The second acquisition module is used to acquire the twisting time of the liquid crystal molecules corresponding to the completion of charging of the liquid crystal located in the last row in the liquid crystal area;

A time calculation module, configured to calculate the light source area turn-on time corresponding to the liquid crystal area based on the scanning time and the liquid crystal molecule twist time.

Correspondingly, on the other hand, the embodiment of the present application also provides a storage medium, which stores a plurality of instructions, and the instructions are suitable for loading by the processor to execute the backlight based on the 3D display technology as described above. Control Method.

Correspondingly, another aspect of the embodiment of the present application also provides a terminal device, including a processor and a memory. The memory stores a plurality of instructions. The processor loads the instructions to perform the 3D display based on the above. Technical backlight control method.

Embodiments of the present application provide a backlight control method, device, medium and equipment based on 3D display technology. This method obtains several liquid crystal areas by dividing N rows of liquid crystals on the liquid crystal display screen; the backlight module is The light source is divided into regions to obtain several light source regions corresponding to the several liquid crystal regions; the scanning time corresponding to each liquid crystal region on the liquid crystal display screen is obtained; and the corresponding time when the liquid crystal in the last row in the liquid crystal region is completed is obtained. the liquid crystal molecule twisting time; calculate the light source area turn-on time corresponding to the liquid crystal area according to the scanning time and the liquid crystal molecule twisting time. The embodiment of the present application controls the opening and closing time of the backlight module, that is, the backlight module is not opened until the current liquid crystal row on the LCD screen deflects to the corresponding picture and is stable, and the current one is closed when the next image frame is transmitted. The backlight module ensures that the picture the user sees is after the liquid crystal deflection is stabilized, and avoids the problem of picture crosstalk when the user watches the LCD screen through 3D glasses.

Description of drawings

In order to explain the technical solutions in the embodiments of the present application more clearly, the drawings needed to be used in the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without exerting creative efforts.

Figure 1 is a distribution diagram of thin film liquid crystal tubes of a liquid crystal display in the backlight control method based on 3D display technology provided by the embodiment of the present application.

FIG. 2 is a schematic flowchart of a backlight control method based on 3D display technology provided by an embodiment of the present application.

FIG. 3 is a schematic structural diagram of a backlight control device based on 3D display technology provided by an embodiment of the present application.

FIG. 4 is another structural schematic diagram of a backlight control device based on 3D display technology provided by an embodiment of the present application.

Figure 5 is a schematic structural diagram of a terminal device provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of this application.

Embodiments of the present application provide a backlight control method based on 3D display technology. The backlight control method based on 3D display technology can be applied to terminal devices. The terminal device may be a smart phone, computer or other devices.

It should be noted that this solution is mainly used in displays that use LCD displays as liquid crystal displays. Terminal equipment, such terminal equipment usually needs to be equipped with a backlight module to display the image on the LCD screen. Each row of liquid crystal in the LCD display is composed of thin film transistors, as shown in Figure 1. After the thin film transistors are turned on by the gate circuit, the source circuit is responsible for charging. During this period, the backlight module on the back of the LCD display is responsible for providing Light source illumination, each pixel of the liquid crystal is responsible for the passage of light and the amount of light passing through, thereby forming a color image with the cooperation of color filters. This is the display principle of an ordinary LCD screen. It features a color filter and a backlight module that is always on.

Since the liquid crystal on the LCD screen will deflect under the action of the source circuit, the picture displayed by the liquid crystal is unstable during the deflection process. If the backlight module is always on at this time, it will cause the user to see What we see is the picture content when the LCD has not reached stability. At this time, if the user watches the LCD screen through 3D glasses, he will see the picture crosstalk problem. "Crosstalk" means that the opening and closing of the glasses shutter is out of sync with the left and right eye images, resulting in superposition between the two images seen by the left and right eyes, resulting in blurred images and seriously affecting viewing. Therefore, in order to solve this problem, embodiments of the present application provide a backlight control method based on 3D display technology. Utilizing the backlight control method based on 3D display technology provided by the embodiments of this application, this solution controls the opening and closing time of the backlight module, that is, the backlight is not turned on until the current liquid crystal row on the LCD screen deflects to the point where the corresponding picture is stable. module, wait until the next image frame is transmitted and turn off the current backlight module to ensure that the picture the user sees is after the liquid crystal deflection has stabilized, and to avoid the problem of picture crosstalk when the user watches the LCD screen through 3D glasses.

Please refer to FIG. 2 , which is a schematic flowchart of a backlight control method based on 3D display technology provided by an embodiment of the present application. The backlight control method based on 3D display technology is applied to terminal equipment. The method may include the following steps:

Step 101: Divide N rows of liquid crystals on the liquid crystal display into regions to obtain several liquid crystal regions.

Step 102: Divide the light source of the backlight module into regions to obtain several light source regions corresponding to the several liquid crystal regions.

What needs to be explained is that in order to ensure that users will not see images displayed by the liquid crystal in an unstable state when viewing the LCD screen, ideally it is necessary to install a corresponding backlight module for each row of liquid crystals on the LCD screen. Light source opening control means that when the deflection of each row of liquid crystals is stable, the light source area of the backlight module under the row of liquid crystals is correspondingly turned on, and this light source area can only illuminate the row of liquid crystals above it, without affecting the display of other rows of liquid crystals. However, in actual operation, due to the short response time of the line LCD scan on the LCD screen, it is difficult to enable each light source area of the backlight module to respond to the turn-on control in a timely and accurate manner. Even if it can be implemented algorithmically, it will cause The increase in production costs, and because the scanning process of the row liquid crystal is an instantaneous action, it is difficult to detect the change process of the row liquid crystal with the naked eye. It is possible that when the user notices the change in the screen of the row liquid crystal, he has already experienced multiple rows of liquid crystal. scanning. Therefore, in this embodiment, based on the instantaneous characteristics of liquid crystal scanning, the N rows of liquid crystal on the liquid crystal display screen can be divided into regions to obtain several liquid crystal regions, so that each liquid crystal region corresponds to a light source region. The greater the number of liquid crystal areas, the better the backlight control effect will be.

It should be further explained that the light source area turn-on time corresponding to each light source area of the backlight module is turned on in sequence according to the scanning order of each liquid crystal area of the LCD screen, so as to realize the segmented light source turning on of the backlight module and ensure that the user end is on the LCD screen. What you see is always the picture displayed after the liquid crystal deflection is stable.

Step 103: Obtain the scanning time corresponding to each liquid crystal area on the LCD screen.

In order to determine the turn-on time of the liquid crystal area corresponding to the backlight module, it is first necessary to obtain the scanning time corresponding to each row of liquid crystal in the liquid crystal area and the number of liquid crystal lines included in the liquid crystal area.

In this embodiment, the scanning time corresponding to the liquid crystal area can be calculated in the following way:

T _b =T _b1 ×n

Among them, T _b is the scanning time corresponding to the liquid crystal area, T _b1 is the scanning time corresponding to each row of liquid crystal, and n is the number of liquid crystal rows included in the liquid crystal area.

Further, in order to obtain the scan time corresponding to each row of liquid crystal, it is necessary to obtain the gate drive start time and gate drive end time corresponding to each row of liquid crystal. The gate drive time is used to indicate the scan start time corresponding to each row of liquid crystal. The gate The driving end time is used to indicate the scanning end time corresponding to each row of liquid crystal.

In this embodiment, the scanning time corresponding to each row of liquid crystal can be calculated in the following way:
T _b1 =T _f -T _r

Among them, T _b1 is the scanning time corresponding to each row of liquid crystal, T _f is the gate drive end time, and T _r is the gate drive start time.

Step 104: Obtain the twist time of the liquid crystal molecules corresponding to when the charging of the liquid crystal located in the last row in the liquid crystal area is completed.

In this embodiment, when each row of liquid crystals is charging, each thin film liquid crystal transistor on the row of liquid crystals begins to deflect. When the thin film liquid crystal transistors reach the deflection voltage requirement, the display screen corresponding to the thin film liquid crystal transistor is stable. Normally, the liquid crystal deflection stabilization time It is 6~8ms, depending on the characteristics of the liquid crystal and the LCD panel manufacturing process. From the above, it can be seen that each row of liquid crystals in the LCD screen needs a certain period of time to stabilize the picture after the scanning is completed, that is, the liquid crystal molecule torsion time.

Step 105: Calculate the light source area turn-on time corresponding to the liquid crystal area based on the scanning time and the liquid crystal molecule twist time.

After obtaining the scanning time corresponding to the liquid crystal area and the corresponding twisting time of the liquid crystal molecules, the actual time corresponding to the liquid crystal area when the picture is stable can be calculated.

In this embodiment, the scanning time corresponding to the liquid crystal area and the twisting time of the liquid crystal molecules are calculated by The turn-on time of the light source area corresponding to the liquid crystal area is obtained:
T _b2 =T _b +T _c

Among them, T _b2 is the turn-on time of the light source area corresponding to the liquid crystal area, T _b is the scanning time corresponding to the liquid crystal area, and T _c is the gate drive start time. The corresponding liquid crystal molecular twist when the liquid crystal in the last row in the liquid crystal area is charged is completed. time.

It should be noted that in order to ensure that the liquid crystal scanning action can be completed within the specified display time of the image frame, the complete display time of each image frame on the LCD screen needs to be less than or equal to the preset time length.

Among them, the default duration is:
T _z =1/f

T _z is the preset duration, and f is the refresh rate of the LCD screen. For example, when the refresh rate of the liquid crystal display is 120HZ, T _z =1/f=1/120=8.33ms.

In some embodiments, the method further includes the following steps:

In this embodiment, since the picture displayed by the liquid crystal on the display screen is unstable during the deflection process, if the backlight display unit is always on, the user will see the picture content when the liquid crystal has not reached stability. , at this time, the picture seen by the user through the 3D glasses will have crosstalk problems. That is, the opening and closing of the shutter of the glasses is out of sync with the images of the left and right eyes, resulting in a superposition between the two images seen by the left and right eyes, resulting in blurred images and seriously affecting viewing. Therefore, in order to solve this problem, it is necessary to synchronize the opening and closing timing of the backlight module with the image frame sequence, that is, wait until the current Nth image frame is stable before turning on the backlight module, and wait until the next N+1th image frame is transmitted Turn off the current backlight module when coming over, The backlight module is turned on only after the image of the N+1th image frame is stable.

In some embodiments, the light valve driver generates left and right eye opening signals of the light valve according to the synchronous control timing of the image frame sequence. The specific implementation is similar to the backlight module and will not be described in detail here.

All the above optional technical solutions can be combined in any way to form optional embodiments of the present application, and will not be described again one by one.

During specific implementation, the present application is not limited by the execution order of each described step. Certain steps may also be performed in other orders or at the same time if no conflict occurs.

It can be seen from the above that the backlight control method based on 3D display technology provided by the embodiment of the present application divides the N rows of liquid crystals on the liquid crystal display screen to obtain several liquid crystal regions; divides the light source of the backlight module into regions, and obtains Several light source areas corresponding to the several liquid crystal areas; obtaining the scanning time corresponding to each liquid crystal area on the liquid crystal display; obtaining the corresponding liquid crystal molecule twisting time when the liquid crystal located in the last row in the liquid crystal area is charged; according to The scan time and the liquid crystal molecule twist time are used to calculate the light source area turn-on time corresponding to the liquid crystal area. The embodiment of the present application controls the opening and closing time of the backlight module, that is, the backlight module is not opened until the current liquid crystal row on the LCD screen deflects to the corresponding picture and is stable, and the current one is closed when the next image frame is transmitted. The backlight module ensures that the picture the user sees is after the liquid crystal deflection is stabilized, and avoids the problem of picture crosstalk when the user watches the LCD screen through 3D glasses.

Embodiments of the present application also provide a backlight control device based on 3D display technology. The backlight control device based on 3D display technology can be integrated in a terminal device. The terminal device may be a smartphone, a tablet computer, or other devices.

Please refer to FIG. 3 , which is a schematic structural diagram of a backlight control device based on 3D display technology provided by an embodiment of the present application. The backlight control device 30 based on 3D display technology may include:

The first dividing module 31 is used to divide the N rows of liquid crystals on the liquid crystal display into areas to obtain several liquid crystal areas;

The second dividing module 32 is used to divide the light source of the backlight module into regions to obtain several light source regions corresponding to the several liquid crystal regions;

The first acquisition module 33 is used to acquire the scanning time corresponding to each liquid crystal area on the liquid crystal display screen;

The second acquisition module 34 is used to acquire the twisting time of the liquid crystal molecules corresponding to the completion of charging of the liquid crystal located in the last row in the liquid crystal area;

The time calculation module 35 is configured to calculate the light source area turn-on time corresponding to the liquid crystal area based on the scanning time and the liquid crystal molecule twist time.

In some embodiments, the light source area turn-on time corresponding to each light source area of the backlight module is turned on in sequence along with the scanning order of each liquid crystal area of the liquid crystal display screen.

In some embodiments, the first acquisition module 33 is used to acquire the scanning time corresponding to each row of liquid crystals in the liquid crystal area and the number of liquid crystal rows included in the liquid crystal area; based on the scanning time corresponding to each row of liquid crystals The scanning time corresponding to the liquid crystal area is calculated based on the time and the number of liquid crystal rows.

In some embodiments, the first acquisition module 33 is used to acquire the gate drive start time and gate drive end time corresponding to each row of liquid crystals. The gate drive time is used to indicate the scanning start time corresponding to each row of liquid crystals. time, the gate drive end time is used to indicate the scan end time corresponding to each row of liquid crystals; the scan time corresponding to each row of liquid crystals is calculated based on the scan start time and scan end time.

In some embodiments, the time calculation module 35 is used to calculate the scanning time corresponding to the liquid crystal area and the twist time of the liquid crystal molecules to obtain the light source area corresponding to the liquid crystal area. Domain opening time.

In some embodiments, the complete display time of each image frame on the liquid crystal display screen is less than or equal to a preset time period.

In some embodiments, the device further includes a control module configured to obtain a synchronization control timing sequence generated according to the image frame sequence, and control the opening and closing sequence of the backlight module according to the synchronization control timing sequence.

During specific implementation, each of the above modules can be implemented as an independent entity, or can be combined in any way and implemented as the same or several entities.

It can be seen from the above that the backlight control device 30 based on 3D display technology provided in the embodiment of the present application divides the N rows of liquid crystals on the liquid crystal display screen through the first dividing module 31 to obtain several liquid crystal regions; the second dividing module 32 The light source of the backlight module is divided into regions to obtain several light source regions corresponding to the several liquid crystal regions; the first acquisition module 33 obtains the scanning time corresponding to each liquid crystal region on the liquid crystal display; the second acquisition module 34 obtains The corresponding liquid crystal molecule twisting time when the liquid crystal in the last row in the liquid crystal area is charged is completed; the time calculation module 35 calculates the light source area turn-on time corresponding to the liquid crystal area based on the scanning time and the liquid crystal molecule twisting time.

Please refer to FIG. 4 , which is another schematic structural diagram of a backlight control device based on 3D display technology provided by an embodiment of the present application. The backlight control device 30 based on 3D display technology includes a memory 120 , one or more processors 180 , and One or more application programs, wherein the one or more application programs are stored in the memory 120 and configured to be executed by the processor 180; the processor 180 may include a first partition module 31 and a second partition module 32 , the first acquisition module 33, the second acquisition module 34, and the time calculation module 35. For example, the structure and connection relationship of each of the above components can be as follows:

Memory 120 may be used to store applications and data. The application programs stored in the memory 120 include executable codes. Applications can be composed of various functional modules. The processor 180 executes various functional applications and data processing by running application programs stored in the memory 120 . In addition, the memory 120 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 120 may also include a memory controller to provide the processor 180 with access to the memory 120 .

The processor 180 is the control center of the device. It uses various interfaces and lines to connect various parts of the entire terminal. It executes various functions of the device by running or executing application programs stored in the memory 120 and calling data stored in the memory 120. functions and process data for overall monitoring of the installation. Optionally, the processor 180 may include one or more processing cores; preferably, the processor 180 may integrate an application processor and a modem processor, where the application processor mainly processes operating systems, user interfaces, application programs, etc. .

Specifically, in this embodiment, the processor 180 will follow the following instructions to load the executable code corresponding to the process of one or more application programs into the memory 120, and the processor 180 will run the executable code stored in the memory 120. application to achieve various functions:

The second acquisition module 34 is used to acquire the liquid crystal charge located in the last row in the liquid crystal area. The corresponding twisting time of the liquid crystal molecules when completed;

In some embodiments, the time calculation module 35 is used to calculate the light source area turn-on time corresponding to the liquid crystal area by calculating the scanning time corresponding to the liquid crystal area and the twist time of the liquid crystal molecules.

An embodiment of the present application also provides a terminal device. The terminal device may be a smartphone, computer, tablet computer or other devices.

Please refer to FIG. 5 . FIG. 5 shows a schematic structural diagram of a terminal device provided by an embodiment of the present application. The terminal device can be used to implement the backlight control method based on 3D display technology provided in the above embodiment. The terminal device 1200 can be a television, a smart phone, or a tablet computer.

As shown in Figure 5, the terminal device 1200 may include an RF (Radio Frequency, radio frequency) circuit 110, a memory 120 including one or more (only one is shown in the figure) computer-readable storage media, an input unit 130, and a display unit. 140. Sensor 150, audio circuit 160, transmission module 170, processor 180 including one or more (only one is shown in the figure) processing core, power supply 190 and other components. Those skilled in the art can understand that the structure of the terminal device 1200 shown in Figure 5 does not constitute a limitation on the terminal device 1200, and may include more or less components than shown in the figure, or combine certain components, or different components. layout. in:

The RF circuit 110 is used to receive and send electromagnetic waves, realize mutual conversion of electromagnetic waves and electrical signals, and thereby communicate with communication networks or other devices. The RF circuit 110 may include a variety of existing circuit elements for performing these functions, such as antennas, radio frequency transceivers, digital signal processors, encryption/decryption chips, Subscriber Identity Module (SIM) cards, memory, and the like. The RF circuit 110 can communicate with various networks such as the Internet, an intranet, a wireless network, or communicate with other devices through a wireless network.

The memory 120 can be used to store software programs and modules, such as program instructions/modules corresponding to the backlight control method based on 3D display technology in the above embodiments. The processor 180 executes various software programs and modules stored in the memory 120 by running them. Functional applications and data processing can automatically select the vibration reminder mode according to the current scene of the terminal device to perform backlight control based on 3D display technology, which can not only ensure that meetings and other scenes are not disturbed, but also ensure that users can sense incoming calls, improving improve the intelligence of terminal equipment. Memory 120 may include high-speed random access memory and may also include non-volatile Volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 120 may further include memory located remotely relative to the processor 180, and these remote memories may be connected to the terminal device 1200 through a network. Examples of the above-mentioned networks include but are not limited to the Internet, intranets, local area networks, mobile communication networks and combinations thereof.

The input unit 130 may be used to receive input numeric or character information, and to generate keyboard, mouse, joystick, optical or trackball signal input related to user settings and function control. Specifically, the input unit 130 may include a touch-sensitive surface 131 and other input devices 132 . The touch-sensitive surface 131 , also called a touch display or a touchpad, can collect the user's touch operations on or near it (for example, the user uses a finger, stylus, or any other suitable object or accessory on the touch-sensitive surface 131 or operations near the touch-sensitive surface 131), and drive the corresponding connection device according to the preset program. Optionally, the touch-sensitive surface 131 may include two parts: a touch detection device and a touch controller. Among them, the touch detection device detects the user's touch orientation, detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device and sends it It is converted into contact coordinates and then sent to the processor 180, which can receive and execute the commands sent by the processor 180. In addition, touch-sensitive surfaces 131 can be implemented using various types such as resistive, capacitive, infrared, and surface acoustic waves. In addition to the touch-sensitive surface 131, the input unit 130 may also include other input devices 132. Specifically, other input devices 132 may include, but are not limited to, one or more of a physical keyboard, function keys (such as volume control keys, switch keys, etc.), trackball, mouse, joystick, etc.

The display unit 140 may be used to display information input by the user or information provided to the user as well as various graphical user interfaces of the terminal device 1200. These graphical user interfaces may be composed of graphics, text, icons, videos, and any combination thereof. The display unit 140 may include a display panel 141, which may optionally be LCD (Liquid Crystal Display) or OLED (Organic Display). The display panel 141 is configured in the form of Light-Emitting Diode (organic light-emitting diode) or the like. Further, the touch-sensitive surface 131 can cover the display panel 141. When the touch-sensitive surface 131 detects a touch operation on or near it, it is sent to the processor 180 to determine the type of touch event, and then the processor 180 determines the type of the touch event according to the touch. The type of control event provides corresponding visual output on the display panel 141. Although in FIG. 5 , the touch-sensitive surface 131 and the display panel 141 are used as two independent components to implement input and output functions, in some embodiments, the touch-sensitive surface 131 and the display panel 141 can be integrated to implement input. and output functions.

The terminal device 1200 may also include at least one sensor 150, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor and a proximity sensor. The ambient light sensor may adjust the brightness of the display panel 141 according to the brightness of the ambient light. The proximity sensor may close the display panel 141 when the terminal device 1200 moves to the ear. and/or backlight. As a kind of motion sensor, the gravity acceleration sensor can detect the magnitude of acceleration in various directions (usually three axes). It can detect the magnitude and direction of gravity when stationary. It can be used to identify applications of mobile phone posture (such as horizontal and vertical screen switching, related games, magnetometer attitude calibration), vibration recognition related functions (such as pedometer, knock), etc.; as for the terminal device 1200, it can also be configured with other sensors such as gyroscope, barometer, hygrometer, thermometer, infrared sensor, etc., here No longer.

The audio circuit 160, the speaker 161, and the microphone 162 can provide an audio interface between the user and the terminal device 1200. The audio circuit 160 can transmit the electrical signal converted from the received audio data to the speaker 161, and the speaker 161 converts it into a sound signal for output; on the other hand, the microphone 162 converts the collected sound signal into an electrical signal, and the audio circuit 160 After being received, it is converted into audio data, and then processed by the audio data output processor 180, and then sent to, for example, another terminal through the RF circuit 110, or the audio data is output to the memory 120 for further processing. Audio circuit 160 may also include earplug plugs hole to provide communication between the peripheral headset and the terminal device 1200.

The terminal device 1200 can help users send and receive emails, browse web pages, access streaming media, etc. through the transmission module 170 (such as a Wi-Fi module), which provides users with wireless broadband Internet access. Although FIG. 5 shows the transmission module 170, it can be understood that it is not a necessary component of the terminal device 1200 and can be omitted as needed within the scope of not changing the essence of the invention.

The processor 180 is the control center of the terminal device 1200, using various interfaces and lines to connect various parts of the entire mobile phone, by running or executing software programs and/or modules stored in the memory 120, and calling data stored in the memory 120 , execute various functions of the terminal device 1200 and process data, thereby overall monitoring the mobile phone. Optionally, the processor 180 may include one or more processing cores; in some embodiments, the processor 180 may integrate an application processor and a modem processor, where the application processor mainly processes the operating system, user interface and applications, etc., the modem processor primarily handles wireless communications. It can be understood that the above modem processor may not be integrated into the processor 180 .

The terminal device 1200 also includes a power supply 190 that supplies power to various components. In some embodiments, the power supply can be logically connected to the processor 180 through a power management system, thereby realizing functions such as discharge management and power consumption management through the power management system. The power supply 190 may also include one or more DC or AC power supplies, recharging systems, power failure detection circuits, power converters or inverters, power status indicators, and other arbitrary components.

Although not shown, the terminal device 1200 may also include a camera (such as a front camera, a rear camera), a Bluetooth module, etc., which will not be described again here. Specifically, in this embodiment, the display unit 140 of the terminal device 1200 is a touch screen display. The terminal device 1200 also includes a memory 120 and one or more programs, where one or more programs are stored in the memory 120, and through One or more programs configured to be executed by one or more processors 180 include instructions for:

The first division instruction is used to divide the N rows of liquid crystals on the liquid crystal display screen to obtain several liquid crystal areas;

The second division instruction is used to divide the light source of the backlight module into regions to obtain several light source regions corresponding to the several liquid crystal regions;

The first acquisition instruction is used to obtain the scanning time corresponding to each liquid crystal area on the LCD screen;

The second acquisition instruction is used to acquire the twisting time of the liquid crystal molecules corresponding to the completion of charging of the liquid crystal located in the last row in the liquid crystal area;

A time calculation instruction is used to calculate the light source area turn-on time corresponding to the liquid crystal area based on the scanning time and the liquid crystal molecule twist time.

In some embodiments, the first acquisition instruction is used to obtain the scanning time corresponding to each row of liquid crystals in the liquid crystal area, and the number of liquid crystal rows included in the liquid crystal area; based on the scanning time corresponding to each row of liquid crystals and the number of liquid crystal rows to calculate the scanning time corresponding to the liquid crystal area.

In some embodiments, the first acquisition instruction is used to obtain the gate drive start time and gate drive end time corresponding to each row of liquid crystals, and the gate drive time is used to indicate the scan start time corresponding to each row of liquid crystals. , the gate drive end time is used to indicate the scan end time corresponding to each row of liquid crystals; the scan time corresponding to each row of liquid crystals is calculated based on the scan start time and the scan end time.

In some embodiments, the time calculation instruction is used to calculate the scanning time corresponding to the liquid crystal area The light source area turn-on time corresponding to the liquid crystal area is calculated by calculating the time between the liquid crystal molecule twisting time.

In some embodiments, the program further includes control instructions for obtaining a synchronization control timing sequence generated according to the image frame sequence, and controlling the opening and closing sequence of the backlight module according to the synchronization control timing sequence.

An embodiment of the present application also provides a terminal device. The terminal device may be a smart phone, computer or other devices.

It can be seen from the above that the embodiment of the present application provides a terminal device 1200. The terminal device 1200 performs the following steps:

Get the scanning time corresponding to each LCD area on the LCD screen;

Embodiments of the present application also provide a storage medium. A computer program is stored in the storage medium. When the computer program is run on a computer, the computer executes the backlight based on 3D display technology described in any of the above embodiments. Control Method:

Get the scanning time corresponding to each LCD area on the LCD screen;

It should be noted that for the backlight control method based on 3D display technology described in this application, ordinary testers in the field can understand all or part of the process of implementing the backlight control method based on 3D display technology described in the embodiments of this application. This is accomplished by controlling relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, such as in a memory of a terminal device, and is executed by at least one processor in the terminal device. The process may include the process of the embodiment of the backlight control method based on 3D display technology. Wherein, the storage medium can be a magnetic disk, an optical disk, a read-only memory (ROM, Read Only Memory), a random access memory (RAM, a Random Access Memory), etc.

For the backlight control device based on 3D display technology in the embodiment of the present application, each functional module of the device can be integrated in one processing chip, or each module can exist physically alone, or two or more modules can be integrated in one processing chip. in a module. The above integrated modules can be implemented in the form of hardware or software function modules. If the integrated module is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium, such as a read-only memory, a magnetic disk or an optical disk.

The above describes the backlight control method and device based on 3D display technology provided by the embodiments of the present application. The media and equipment are introduced in detail. This article uses specific examples to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core ideas; at the same time, for those skilled in the art, based on the application of Thoughts, there may be changes in the specific implementation and scope of application. In summary, the contents of this specification should not be understood as limiting the present application.

Claims

A backlight control method based on 3D display technology, including:

Divide the N rows of liquid crystals on the LCD display into regions to obtain several liquid crystal regions;

Divide the light source of the backlight module into regions to obtain several light source regions corresponding to the several liquid crystal regions;

Get the scanning time corresponding to each LCD area on the LCD screen;

Obtain the twisting time of the liquid crystal molecules corresponding to the completion of charging of the liquid crystal located in the last row in the liquid crystal area;

The light source area turn-on time corresponding to the liquid crystal area is calculated based on the scanning time and the liquid crystal molecule twist time.
The backlight control method according to claim 1, wherein the light source area turn-on time corresponding to each light source area of the backlight module is turned on sequentially along with the scanning order of each liquid crystal area of the liquid crystal display screen.
The backlight control method according to claim 2, wherein said obtaining the scanning time corresponding to each liquid crystal area on the liquid crystal display screen includes:

Obtain the scanning time corresponding to each row of liquid crystals in the liquid crystal area and the number of liquid crystal rows included in the liquid crystal area;

The scanning time corresponding to the liquid crystal area is calculated based on the scanning time corresponding to each row of liquid crystal and the number of liquid crystal rows.
The backlight control method as claimed in claim 3, wherein the scanning time corresponding to the liquid crystal area is calculated in the following manner:
T b =T b1 ×n

Among them, T b is the scanning time corresponding to the liquid crystal area, is the scanning time corresponding to each row of liquid crystal, and n is the number of liquid crystal rows included in the liquid crystal area.
The backlight control method according to claim 4, wherein said obtaining the scanning time corresponding to each row of liquid crystals in the liquid crystal area includes:

Obtain the gate drive start time and gate drive end time corresponding to each row of liquid crystal. The gate drive time is used to indicate the scan start time corresponding to each row of liquid crystal. The gate drive end time is used to indicate the corresponding scan start time of each row of liquid crystal. The scan end time;

The scanning time corresponding to each row of liquid crystals is calculated based on the scanning start time and the scanning end time.
The backlight control method as claimed in claim 5, wherein the scanning time corresponding to each row of liquid crystal is calculated in the following manner:
T b1 =T f -T r

Among them, T b1 is the scanning time corresponding to each row of liquid crystal, T f is the gate drive end time, and T r is the gate drive start time.
The backlight control method of claim 1, wherein calculating the light source area turn-on time corresponding to the liquid crystal area based on the scanning time and the liquid crystal molecule twist time includes:

The light source area turn-on time corresponding to the liquid crystal area is calculated by calculating the scanning time corresponding to the liquid crystal area and the twist time of the liquid crystal molecules.
The backlight control method according to claim 7, wherein the light source area opening time is:
T b2 =T b +T c

Among them, T b2 is the turn-on time of the light source area corresponding to the liquid crystal area, T b is the scanning time corresponding to the liquid crystal area, and T c is the gate drive start time. The liquid crystal in the last row in the liquid crystal area is charged. is the corresponding twisting time of the liquid crystal molecules.
The backlight control method according to claim 1, wherein the complete display time of each image frame on the liquid crystal display screen is less than or equal to a preset time length.
The backlight control method as claimed in claim 9, wherein the preset duration is:
T z =1/f

Among them, T z is the preset time length, and f is the refresh rate of the LCD screen.
The backlight control method of claim 1, further comprising:

Obtain the synchronization control timing sequence generated according to the image frame sequence, and control the opening and closing sequence of the backlight module according to the synchronization control timing sequence.
The backlight control method according to claim 1, wherein the light valve driver generates the left and right eye opening signals of the light valve according to the synchronous control timing of the image frame sequence.
A backlight control device based on 3D display technology, including:

The first dividing module is used to divide the N rows of liquid crystals on the liquid crystal display into areas to obtain several liquid crystal areas;

The second dividing module is used to divide the light source of the backlight module into regions to obtain several light source regions corresponding to the several liquid crystal regions;

The first acquisition module is used to acquire the scanning time corresponding to each liquid crystal area on the LCD screen;

The second acquisition module is used to acquire the twisting time of the liquid crystal molecules corresponding to the completion of charging of the liquid crystal located in the last row in the liquid crystal area;

A time calculation module, configured to calculate the light source area turn-on time corresponding to the liquid crystal area based on the scanning time and the liquid crystal molecule twist time.
The backlight control device according to claim 13, wherein each light of the backlight module The light source area corresponding to the source area is turned on in sequence according to the scanning order of each liquid crystal area of the liquid crystal display screen.
The backlight control device according to claim 14, wherein said obtaining the scanning time corresponding to each liquid crystal area on the liquid crystal display screen includes:

Obtain the scanning time corresponding to each row of liquid crystals in the liquid crystal area and the number of liquid crystal rows included in the liquid crystal area;

The scanning time corresponding to the liquid crystal area is calculated based on the scanning time corresponding to each row of liquid crystal and the number of liquid crystal rows.
The backlight control device of claim 15, wherein the scanning time corresponding to the liquid crystal area is calculated in the following manner:
T b =T b1 ×n

Among them, T b is the scanning time corresponding to the liquid crystal area, T b1 is the scanning time corresponding to each row of liquid crystal, and n is the number of liquid crystal rows included in the liquid crystal area.
The backlight control device according to claim 16, wherein said obtaining the scanning time corresponding to each row of liquid crystals in the liquid crystal area includes:

Obtain the gate drive start time and gate drive end time corresponding to each row of liquid crystal. The gate drive time is used to indicate the scan start time corresponding to each row of liquid crystal. The gate drive end time is used to indicate the corresponding scan start time of each row of liquid crystal. The scan end time;

The scanning time corresponding to each row of liquid crystals is calculated based on the scanning start time and the scanning end time.
The backlight control device of claim 17, wherein the scanning time corresponding to each row of liquid crystal is calculated in the following manner:
T b1 =T f -T r

Among them, T b1 is the scanning time corresponding to each row of liquid crystal, T f is the gate drive end time, and T r is the gate drive start time.
A computer-readable storage medium, wherein the computer-readable storage medium stores a plurality of instructions, and the instructions are suitable for loading by the processor to execute the 3D display technology based on any one of claims 1 to 12 backlight control method.
A terminal device, which includes a processor and a memory. The memory stores a plurality of instructions. The processor loads the instructions to execute the backlight control based on 3D display technology according to any one of claims 1 to 12. method.