Display unit, processor and intelligent terminal
By transmitting always-on display image data through the serial peripheral interface between the display driver chip and the processor, the problem of high power consumption in mobile phones without display memory is solved, and a low-power always-on display function is achieved without increasing hardware costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING TRANSSION COMM TECH LTD
- Filing Date
- 2025-04-15
- Publication Date
- 2026-05-19
AI Technical Summary
Existing screen phones without display memory require the processor to work continuously to implement the always-on display function, resulting in high power consumption and short battery life. Increasing display memory would increase hardware costs.
By setting a first serial peripheral interface on the display driver chip to connect with the processor, the screen-off image data is transmitted using the serial peripheral interface, and the image data is transmitted through an independent clock signal source or cache space when the processor is in sleep mode, thus realizing screen-off display.
The power consumption of always-on display has been reduced, avoiding increased hardware costs and achieving a low-power always-on display function.
Smart Images
Figure CN224263788U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of display technology, specifically to a display unit, a processor, and a smart terminal thereof. Background Technology
[0002] Currently, to provide users with a more convenient experience, there is a demand for always-on display (SOLD) functionality in mobile phones. Existing technology allows smart terminals such as mobile phones to implement SOLD functionality using screens with integrated display memory. Specifically, the phone typically transmits image data to the display memory of the display driver chip via the processor. The display driver chip then reads the image data from the display memory and drives the screen to display the always-on display. At this time, the phone's processor can enter a sleep state, and only the display driver chip needs to operate to achieve the SOLD function.
[0003] Furthermore, smart terminals such as mobile phones can also achieve always-on display functionality using screens without integrated display memory. Since mobile phones without display memory do not have integrated display memory within their display driver chip, existing mobile phones without display memory require the processor to continuously work to transmit image data to the display driver chip, which then processes the received image data in real time and drives the screen to display the always-on display.
[0004] In the process of conceiving and implementing this application, the inventors discovered at least the following problems: the existing screen-off display function of the above-mentioned mobile phones without display memory requires the processor to work continuously, and the high power consumption results in short battery life. Adding display memory will increase the hardware cost of the mobile phone. Therefore, there is a need for a device that can achieve the screen-off display function with low power consumption under hardware conditions without display memory.
[0005] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content
[0006] To address the aforementioned technical issues, this application provides a display unit, processor, and smart terminal that can reduce power consumption during always-on display without increasing hardware costs.
[0007] To solve the above-mentioned technical problems, this application provides a display unit, which includes: a display driver chip and a display panel;
[0008] The display driver chip is provided with a first serial peripheral interface and is connected to the central processing unit through the first serial peripheral interface to receive the screen-off image data output by the processor through the second serial peripheral interface; the display panel is used to receive the screen-off drive signal output by the display driver chip based on the screen-off image data and then perform screen-off display.
[0009] Optionally, the display unit is a screen without display memory, which is a screen in which the display driver chip does not have display memory set inside.
[0010] Optionally, the display driver chip also includes a first mobile industry processor interface, through which the display driver chip is connected to the processor to receive non-screen-off image data output by the processor through a second mobile industry processor interface.
[0011] Optionally, the display driver chip includes a flash memory chip, and the flash memory chip is provided with a display compensation data memory.
[0012] This application also provides a processor, which has a second serial peripheral interface, which is connected to the first serial peripheral interface of the aforementioned display driver chip to output always-on display image data.
[0013] Optionally, the processor also includes a sensor management component, which has a register space inside. The register space can be used to store screen-off image data. The second serial peripheral interface is used to output the screen-off image data stored in the register space, so as to transmit it to the display driver chip through the first serial peripheral interface.
[0014] Optionally, the processor also includes a processor cache, which can be used to store always-on display image data; the second serial peripheral interface is used to output the always-on display image data stored in the processor cache and transmit it to the display driver chip through the first serial peripheral interface.
[0015] Optionally, the processor is connected to the memory via a third mobile industry processor interface. The memory has a display data storage space inside, which can be used to store always-on display image data. The second serial peripheral interface reads the always-on display image data stored in the display data storage space in the memory via the third mobile industry processor interface, and transmits it to the display driver chip via the first serial peripheral interface.
[0016] Optionally, the second serial peripheral interface is connected to an independent clock signal source, which enables the second serial peripheral interface to operate when the processor enters a sleep state.
[0017] This application also provides a smart terminal, including the aforementioned display unit and processor.
[0018] The display unit, processor, and smart terminal of this application transmit screen-off image data through the first serial peripheral interface on the display driver chip and the second serial peripheral interface in the processor, which can reduce the power consumption of screen-off display without increasing hardware costs. Attached Figure Description
[0019] Figure 1 A schematic diagram of the hardware structure of a smart terminal to implement the various embodiments of this application.
[0020] Figure 2 This is a communication network system architecture diagram provided for an embodiment of this application.
[0021] Figure 3 This is a schematic diagram of the hardware structure of the display unit and processor of this application.
[0022] Figure 4 This is a schematic diagram of the hardware structure of the display unit and processor in the first embodiment of this application.
[0023] Figure 5 This is a schematic diagram of the hardware structure of the display unit and processor in the second embodiment of this application.
[0024] Figure 6 This is a schematic diagram of the hardware structure of the display unit and processor in the third embodiment of this application.
[0025] The realization of the objectives, functional features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and textual descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation
[0026] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.
[0027] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, components, features, and elements with the same names in different embodiments of this application may have the same meaning or different meanings, the specific meaning of which must be determined by its interpretation in that specific embodiment or further in conjunction with the context of that specific embodiment.
[0028] It should be understood that although the terms first, second, third, etc., may be used herein to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this document, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if," as used herein, can be interpreted as "when," "when," or "in response to determination." Furthermore, as used herein, the singular forms "a," "an," and "the" are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms "comprising," "including," indicate the presence of the stated feature, step, operation, element, component, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or," "and / or," "including at least one of the following," etc., as used in this application, can be interpreted as inclusive, or mean any one or any combination thereof. For example, "including at least one of the following: A, B, C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C." Similarly, "A, B, or C" or "A, B, and / or C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C." Exceptions to this definition only occur when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.
[0029] It should be understood that although the steps in the flowcharts of this application's embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least a portion of the sub-steps or stages of other steps.
[0030] Depending on the context, the words “if” or “suppose” as used here can be interpreted as “when” or “in response to determination” or “in response to detection.” Similarly, depending on the context, the phrases “if determination” or “if detection (of the stated condition or event)” can be interpreted as “when determination” or “in response to determination” or “when detection (of the stated condition or event)” or “in response to detection (of the stated condition or event).”
[0031] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.
[0032] In the following description, the use of suffixes such as "module," "part," or "unit" to denote elements is solely for the purpose of illustrative purposes and has no specific meaning in itself. Therefore, "module," "part," or "unit" may be used interchangeably.
[0033] Smart terminals can be implemented in various forms. For example, the smart terminals described in this application may include smart terminals such as mobile phones, tablets, laptops, handheld computers, personal digital assistants (PDAs), portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc., as well as fixed terminals such as digital TVs and desktop computers.
[0034] The following description will use a mobile terminal as an example. Those skilled in the art will understand that, apart from elements specifically designed for mobile purposes, the construction according to the embodiments of this application can also be applied to fixed-type terminals.
[0035] Please see Figure 1 This is a schematic diagram of the hardware structure of a mobile terminal implementing various embodiments of this application. The mobile terminal 100 may include: an RF (Radio Frequency) unit 101, a WiFi module 102, an audio output unit 103, an A / V (Audio / Video) input unit 104, a sensor 105, a display unit 106, a user input unit 107, an interface unit 108, a memory 109, a processor 110, and a power supply 111, etc. Those skilled in the art will understand that... Figure 1 The mobile terminal structure shown does not constitute a limitation on the mobile terminal. The mobile terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements.
[0036] The following is combined Figure 1 A detailed introduction to each component of the mobile terminal:
[0037] The radio frequency unit 101 can be used for receiving and transmitting signals during information transmission or calls. Specifically, it receives downlink information from the base station and processes it with the processor 110; additionally, it transmits uplink data to the base station. Typically, the radio frequency unit 101 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, and a duplexer. Furthermore, the radio frequency unit 101 can also communicate wirelessly with networks and other devices. The aforementioned wireless communications may use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication), GPRS (General Packet Radio Service), CDMA2000 (Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division Duplexing-Long Term Evolution), TDD-LTE (Time Division Duplexing-Long Term Evolution), and 5G, etc.
[0038] WiFi is a short-range wireless transmission technology. Mobile terminals, through the WiFi module 102, can help users send and receive emails, browse web pages, and access streaming media, providing users with wireless broadband internet access. Although Figure 1 WiFi module 102 is shown, but it is understood that it is not a necessary component of a mobile terminal and can be omitted as needed without changing the nature of the invention.
[0039] The audio output unit 103 can convert audio data received by the radio frequency unit 101 or the WiFi module 102 or stored in the memory 109 into audio signals and output them as sound when the mobile terminal 100 is in call signal receiving mode, call mode, recording mode, voice recognition mode, broadcast receiving mode, etc. Furthermore, the audio output unit 103 can also provide audio output related to specific functions performed by the mobile terminal 100 (e.g., call signal receiving sound, message receiving sound, etc.). The audio output unit 103 may include a speaker, a buzzer, etc.
[0040] The A / V input unit 104 is used to receive audio or video signals. The A / V input unit 104 may include a graphics processing unit (GPU) 1041 and a microphone 1042. The GPU 1041 processes image data of still images or videos acquired by an image capture device (such as a camera) in video capture mode or image capture mode. The processed image frames can be displayed on the display unit 106. The image frames processed by the GPU 1041 can be stored in the memory 109 (or other storage media) or transmitted via the radio frequency unit 101 or the WiFi module 102. The microphone 1042 can receive sound (audio data) in operating modes such as telephone call mode, recording mode, and voice recognition mode, and can process such sound into audio data. The processed audio (voice) data can be converted into a format that can be transmitted to a mobile communication base station via the radio frequency unit 101 in telephone call mode. The microphone 1042 can implement various types of noise cancellation (or suppression) algorithms to eliminate (or suppress) noise or interference generated during the reception and transmission of audio signals.
[0041] The mobile terminal 100 also includes at least one sensor 105, such as a light sensor, a motion sensor, and other sensors. Optionally, the light sensor includes an ambient light sensor and a proximity sensor. Optionally, the ambient light sensor can adjust the brightness of the display panel 1061 according to the ambient light level, and the proximity sensor can turn off the display panel 1061 and / or backlight when the mobile terminal 100 is moved to the ear. As a type of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in various directions (generally three axes), and can detect the magnitude and direction of gravity when stationary. It can be used for applications that recognize the phone's posture (such as landscape / portrait switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc. Other sensors that may be configured in the phone, such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, and infrared sensors, will not be described in detail here.
[0042] The display unit 106 is used to display information input by the user or information provided to the user. The display unit 106 may include a display panel 1061, which may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.
[0043] User input unit 107 can be used to receive input numerical or character information, and generate key signal inputs related to user settings and function control of the mobile terminal. Optionally, user input unit 107 may include touch panel 1071 and other input devices 1072. Touch panel 1071, also known as touch screen, can collect touch operations on or near the user (such as operations performed by the user using a finger, stylus, or any suitable object or accessory on or near touch panel 1071), and drive corresponding connection devices according to a pre-set program. Touch panel 1071 may include two parts: a touch detection device and a touch controller. Optionally, the touch detection device detects the user's touch position and the signal generated by the touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts it into touch point coordinates, sends it to processor 110, and can receive and execute commands sent by processor 110. In addition, touch panel 1071 can be implemented using various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 1071, the user input unit 107 may also include other input devices 1072. Optionally, other input devices 1072 may include, but are not limited to, one or more of the following: physical keyboard, function keys (such as volume control buttons, power buttons, etc.), trackball, mouse, joystick, etc., without being specifically limited here.
[0044] Optionally, the touch panel 1071 may cover the display panel 1061. When the touch panel 1071 detects a touch operation on or near it, it transmits the information to the processor 110 to determine the type of touch event. Subsequently, the processor 110 provides corresponding visual output on the display panel 1061 based on the type of touch event. Although in Figure 1 In this embodiment, the touch panel 1071 and the display panel 1061 are two independent components to realize the input and output functions of the mobile terminal. However, in some embodiments, the touch panel 1071 and the display panel 1061 can be integrated to realize the input and output functions of the mobile terminal. The specific implementation is not limited here.
[0045] Interface unit 108 serves as an interface through which at least one external device can connect to mobile terminal 100. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input / output (I / O) port, a video I / O port, a headphone port, and so on. Interface unit 108 may be used to receive input (e.g., data, power, etc.) from the external device and transmit the received input to one or more elements within mobile terminal 100, or it may be used to transmit data between mobile terminal 100 and the external device.
[0046] The memory 109 can be used to store software programs and various data. The memory 109 may primarily include a program storage area and a data storage area. Optionally, the program storage area may store the operating system, applications required for at least one function (such as sound playback, image playback, etc.), etc.; the data storage area may store data created based on the use of the mobile phone (such as audio data, phonebook, etc.). Furthermore, the memory 109 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.
[0047] The processor 110 is the control center of the mobile terminal. It connects various parts of the mobile terminal via various interfaces and lines. By running or executing software programs and / or modules stored in the memory 109, and by calling data stored in the memory 109, it performs various functions and processes data of the mobile terminal, thereby providing overall monitoring of the mobile terminal. The processor 110 may include one or more processing units; preferably, the processor 110 may integrate an application processor and a modem processor. Optionally, the application processor mainly handles the operating system, user interface, and applications, while the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into the processor 110.
[0048] The mobile terminal 100 may also include a power supply 111 (such as a battery) that supplies power to various components. Preferably, the power supply 111 can be logically connected to the processor 110 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system.
[0049] although Figure 1 As not shown, the mobile terminal 100 may also include a Bluetooth module, etc., which will not be described in detail here.
[0050] To facilitate understanding of the embodiments of this application, the communication network system on which the mobile terminal of this application is based is described below.
[0051] Please see Figure 2 , Figure 2 This application provides a communication network system architecture diagram. The communication network system is an LTE system based on the universal mobile communication technology. The LTE system includes a UE (User Equipment) 201, an E-UTRAN (Evolved UMTS Terrestrial Radio Access Network) 202, an EPC (Evolved Packet Core) 203, and the operator's IP services 204, which are connected in sequence.
[0052] Optionally, UE201 can be the aforementioned terminal 100, which will not be described in detail here.
[0053] E-UTRAN202 includes eNodeB2021 and other eNodeB2022s. Optionally, eNodeB2021 can connect to other eNodeB2022s via backhaul (e.g., X2 interface). eNodeB2021 connects to EPC203 and can provide UE201 with access to EPC203.
[0054] EPC203 may include an MME (Mobility Management Entity) 2031, an HSS (Home Subscriber Server) 2032, other MMEs 2033, an SGW (Serving Gateway) 2034, a PGW (Packet Data Network Gateway) 2035, and a PCRF (Policy and Charging Rules Function) 2036, etc. Optionally, MME2031 is the control node that handles signaling between UE201 and EPC203, providing bearer and connection management. HSS2032 is used to provide registers to manage functions such as the Home Location Register (not shown in the figure) and stores user-specific information such as service characteristics and data rates. All user data can be sent through SGW2034. PGW2035 can provide UE 201 IP address allocation and other functions. PCRF2036 is the policy and charging control decision point for service data flow and IP bearer resources. It selects and provides available policy and charging control decisions for the policy and charging enforcement function unit (not shown in the figure).
[0055] IP services 204 may include the Internet, intranet, IMS (IP Multimedia Subsystem), or other IP services.
[0056] Although the above description uses the LTE system as an example, those skilled in the art should know that this application is not only applicable to the LTE system, but also to other wireless communication systems, such as GSM, CDMA2000, WCDMA, TD-SCDMA, 5G and future new network systems (such as 6G), etc., without limitation.
[0057] Based on the aforementioned mobile terminal hardware structure and communication network system, this application and its various embodiments are proposed.
[0058] In existing technologies, display driver chips have Command Mode (Cmd mode) and Video Mode (Video mode). When using Cmd mode, the display driver chip reads data from the display random access memory (Display RAM) and refreshes the data line by line or frame by frame onto the display panel according to the instructions of the central processing unit (CPU). The processor does not need to continuously send image data. Therefore, terminals with display RAM can directly use the Cmd mode of the display driver chip to achieve the always-on display function with low power consumption. When the display driver chip uses Video mode, the processor needs to continuously transmit data to the display driver chip, but display RAM can be omitted to save costs. In existing always-on display solutions for screens without display RAM, the display driver chip uses Video mode, but the processor needs to keep running, so the power consumption is high. The display unit, processor, and terminal of this application transmit screen-off image data through a serial peripheral interface. This allows the processor's serial peripheral interface to be activated when performing Always On Display (AOD). Furthermore, it can allocate cache space within the existing devices in the terminal to replace display memory, thereby enabling screen-off display functionality with lower power consumption in Video mode without increasing hardware costs by installing display memory within the screen.
[0059] Please see Figure 3 This is a schematic diagram of the hardware structure for implementing the display unit 106 and the processor 110 of this application. The display unit 106 includes a display driver IC (DDIC) 1062 and a display panel 1061.
[0060] The display driver chip 1062 is equipped with a first Serial Peripheral Interface (SPI) 1062a, which is connected to the processor 110 to receive screen-off image data output by the processor 110 through a second SPI interface 110b. The display panel 1061 receives the screen-off drive signal output by the display driver chip 1062 based on the screen-off image data and then performs screen-off display.
[0061] In one embodiment, the display driver chip 1062 is physically connected to the display panel 1061. Specifically, the display driver chip 1062 can be connected to the display panel 1061 through packaging technologies such as Chip On Glass (COG), Chip On Film (COF), and Chip On Plastic (COP).
[0062] In one embodiment, the processor 110 is the core component of the application processor (AP) and is located on the motherboard.
[0063] In one embodiment, the display unit 106 can be a screen without display memory, meaning that the display driver chip 1062 does not have display memory configured. Specifically, in one embodiment, the display driver chip 1062 includes a flash memory chip 1062b, which contains a display compensation data memory (not shown) storing display compensation data. When the display unit 106 is displaying normally, the display driver chip 1062 can read the display compensation data from the flash memory chip 1062b into the compensation memory (Demura Random Access Memory, Demura RAM) (not shown) to improve display uniformity and enhance the display effect.
[0064] In one embodiment, the display driver chip 1062 is further provided with a first Mobile Industry Processor Interface (MIPI) 1062c. Optionally, the display driver chip 1062 is connected to a second Mobile Industry Processor Interface 110a provided in the processor 110 via the first Mobile Industry Processor Interface 1062c to receive non-screen-off image data, thereby driving the display panel 1061 according to the non-screen-off image data and realizing the conventional display function of the display unit 106.
[0065] In one embodiment, in the processor 110, the second serial peripheral interface 110b is connected to an independent clock signal source (not shown), meaning that the clock signal source of the second serial peripheral interface 110b is independent of the main clock signal source of the processor 110. Specifically, the independent clock signal source is, for example, a low-speed internal clock (LSI) or a low-speed external clock (LSE). The independent clock signal source is used to enable the second serial peripheral interface 110b to remain operational when the processor 110 enters a sleep state, i.e., to transmit screen-off image data when the processor 110 enters a sleep state.
[0066] Based on the hardware connection relationship between the display unit 106 and the processor 110 described above, various embodiments of this application are proposed.
[0067] First embodiment:
[0068] Figure 4 This is a schematic diagram of the hardware structure of the display unit and processor in the first embodiment of this application, as shown below. Figure 4 As shown, the processor 110 also includes a sensor management component (also known as a SensorHub) 110c, which has internal register space for storing screen-off image data. In one embodiment, the sensor management component 110c can operate independently when the processor 110 is in sleep mode to acquire sensor data in real time.
[0069] When the screen is always on, the processor 110 may, but is not limited to, enter a sleep state. The display driver chip 1062 can connect to the second serial peripheral interface 110b through the first serial peripheral interface 1062a and read the screen-always image data stored in the register space of the sensor management component 110c to drive the display panel 1061 according to the screen-always image data, thereby realizing the screen-always display function. In one embodiment, when the screen is always on, the display driver chip 1062 can also drive the display panel 1061 according to the display compensation data stored in the flash memory chip 1062b to perform screen-always display compensation.
[0070] Even after the processor 110 in this embodiment enters a sleep state, it can still send the screen-off image data stored in the internal register space of the sensor management component 110c through the second serial peripheral interface 110b, and can still realize the screen-off display function. Compared with the prior art, it can realize the screen-off display function of a screen without display memory with lower power consumption.
[0071] Second embodiment:
[0072] Figure 5 This is a schematic diagram of the hardware structure of the display unit and processor in the second embodiment of this application, as shown below. Figure 5 As shown, the hardware structure of this embodiment is roughly the same as that of the first embodiment. The difference is that, compared with the first embodiment, a third mobile industry processor interface 110d is additionally provided in the processor 110. The third mobile industry processor interface 110d is used to connect to the memory 109.
[0073] The memory 109 internally includes a display data storage space 109a for storing always-on display image data. The display driver chip 1062 can be connected to a second serial peripheral interface 110b via a first serial peripheral interface 1062a. Since the third mobile processor interface 110d is connected to the memory 109, the second serial peripheral interface 110b can send the always-on display image data stored in the display data storage space 109a within the memory 109 to the display driver chip 1062. Therefore, this embodiment can use the display data storage space 109a internally within the memory 109 to replace the display memory, allowing the display driver chip 1062 to drive the display panel 1061 according to the always-on display image data stored in the display data storage space 109a, thereby realizing the always-on display function.
[0074] Alternatively, the memory 109 may be an embedded multimedia card (eMMC) or a universal flash storage (UFS) chip.
[0075] Similar to the first embodiment, when performing always-on display, after the processor 110 of this embodiment enters a sleep state, it can still send the always-on image data stored in the display data storage space 109a in the memory 109 to the display driver chip 1062 through the second serial peripheral interface 110b, thereby realizing the always-on display function. Compared with the prior art, it can realize the always-on display function of a screen without display memory with lower power consumption.
[0076] Third Embodiment
[0077] Figure 6 This is a schematic diagram of the hardware structure of the display unit and processor in the third embodiment of this application, as shown below. Figure 6 As shown, the hardware structure of this embodiment is roughly the same as that of the above embodiment. The difference is that, compared with the above embodiment, this embodiment uses a processor cache 109a in the processor 110. The processor cache 109a is used to store the screen-off image data, which can replace the display memory. The second serial peripheral interface 110b can send the screen-off image data stored in the processor cache 109a to the display driver chip 1062 to realize the screen-off display function.
[0078] After the processor 110 in this embodiment enters a sleep state, it can still send the screen-off image data stored in the processor cache 109a through the second serial peripheral interface 110b, and still realize the screen-off display function. Similarly to the above embodiment, it can realize the screen-off display function of a screen without display memory with lower power consumption compared to the prior art.
[0079] This application also provides a terminal, which includes the display unit 106 and processor 110 as described in the above embodiments. When the terminal is displaying a screen-off display, it transmits the screen-off image data through the first serial peripheral interface on the display driver chip and the second serial peripheral interface in the processor, which can reduce the power consumption of the screen-off display without increasing hardware costs.
[0080] It is understood that the above scenarios are merely examples and do not constitute a limitation on the application scenarios of the technical solutions provided in the embodiments of this application. The technical solutions of this application can also be applied to other scenarios. For example, as those skilled in the art will know, with the evolution of system architecture and the emergence of new business scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.
[0081] The sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.
[0082] The steps in the method of this application embodiment can be adjusted, combined, or deleted according to actual needs.
[0083] The units in the device of this application embodiment can be merged, divided, and deleted according to actual needs.
[0084] In this application, the same or similar terms, concepts, technical solutions and / or application scenario descriptions are generally described in detail only when they appear for the first time. When they appear again, they are generally not repeated for the sake of brevity. When understanding the technical solutions and other contents of this application, the same or similar terms, concepts, technical solutions and / or application scenario descriptions that are not described in detail later can be referred to their previous relevant detailed descriptions.
[0085] In this application, the descriptions of the various embodiments have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.
[0086] The technical features of the present application can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of the present application.
[0087] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, controlled terminal, or network device, etc.) to execute the methods of each embodiment of this application.
[0088] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. A computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the flow or function according to the embodiments of this application is generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, storage disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state disk (SSD)).
[0089] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.
Claims
1. A display unit, characterized in that, include: Display driver chip and display panel; The display driver chip is provided with a first serial peripheral interface and is connected to the central processing unit through the first serial peripheral interface to receive the screen-off image data output by the processor through the second serial peripheral interface. The display panel is used to receive the screen-off drive signal output by the display driver chip based on the screen-off image data, and then perform screen-off display.
2. The display unit as described in claim 1, characterized in that, The display unit is a screen without display memory, which means that the display driver chip does not have display memory set inside.
3. The display unit as described in claim 1, characterized in that: The display driver chip also includes a first mobile industry processor interface, which is connected to the processor to receive non-screen-off image data output by the processor through a second mobile industry processor interface.
4. The display unit as described in any one of claims 1 to 3, characterized in that, The display driver chip includes a flash memory chip, and the flash memory chip is provided with a display compensation data memory.
5. A processor, characterized in that, The processor is provided with a second serial peripheral interface, which is connected to the first serial peripheral interface of the display driver chip according to claim 1, so as to output the screen-off image data.
6. The processor as described in claim 5, characterized in that, The processor further includes a sensor management component, which has a register space inside. The register space can be used to store the screen-off image data. The second serial peripheral interface is used to output the screen-off image data stored in the register space, so as to transmit it to the display driver chip through the first serial peripheral interface.
7. The processor as described in claim 5, characterized in that, The processor also includes a processor cache, which can be used to store the always-on display image data; the second serial peripheral interface is used to output the always-on display image data stored in the processor cache and transmit it to the display driver chip through the first serial peripheral interface.
8. The processor as described in claim 5, characterized in that, The processor is connected to the memory via a third mobile industry processor interface. The memory has a display data storage space inside, which can be used to store the always-on display image data. The second serial peripheral interface reads the always-on display image data stored in the display data storage space in the memory via the third mobile industry processor interface, and transmits it to the display driver chip via the first serial peripheral interface.
9. The processor as described in claim 5, characterized in that, The second serial peripheral interface is connected to an independent clock signal source, which enables the second serial peripheral interface to operate when the processor enters a sleep state.
10. A smart terminal, characterized in that, The smart terminal includes a display unit as described in any one of claims 1 to 4, and / or a processor as described in any one of claims 5 to 9.