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CN111026234A - Monitors and Desktop Computers - Google Patents

Monitors and Desktop Computers Download PDF

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Publication number
CN111026234A
CN111026234A CN201911151172.8A CN201911151172A CN111026234A CN 111026234 A CN111026234 A CN 111026234A CN 201911151172 A CN201911151172 A CN 201911151172A CN 111026234 A CN111026234 A CN 111026234A
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China
Prior art keywords
pwm
interface
level signal
signal
control circuit
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CN201911151172.8A
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Chinese (zh)
Inventor
王月
李继龙
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TCL China Star Optoelectronics Technology Co Ltd
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TCL China Star Optoelectronics Technology Co Ltd
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Priority to CN201911151172.8A priority Critical patent/CN111026234A/en
Publication of CN111026234A publication Critical patent/CN111026234A/en
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1601—Constructional details related to the housing of computer displays, e.g. of CRT monitors, of flat displays
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
    • G06F1/3215—Monitoring of peripheral devices
    • G06F1/3218—Monitoring of peripheral devices of display devices
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3234—Power saving characterised by the action undertaken
    • G06F1/325—Power saving in peripheral device
    • G06F1/3265—Power saving in display device
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/14—Digital output to display device ; Cooperation and interconnection of the display device with other functional units
    • G06F3/147—Digital output to display device ; Cooperation and interconnection of the display device with other functional units using display panels

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Computer Hardware Design (AREA)
  • Liquid Crystal Display Device Control (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

本发明提供一种显示器及台式电脑，其中显示器包括电连接传递电源信号的计算机主机，所述显示器包括背光源及电连接所述背光源的驱动电路板，所述驱动电路板包括PWM驱动芯片及电连接所述PWM驱动芯片的至少一串口，所述PWM驱动芯片通过所述串口电连接所述计算机主机，所述PWM驱动芯片在检测到所述串口有电源信号时，关闭所述背光源。借此，能够有效地节约能源、成本并且避免不必要的能源浪费。

Figure 201911151172

The present invention provides a display and a desktop computer, wherein the display includes a computer host that is electrically connected to transmit power signals, the display includes a backlight and a drive circuit board that is electrically connected to the backlight, the drive circuit board includes a PWM drive chip and At least one serial port of the PWM drive chip is electrically connected, the PWM drive chip is electrically connected to the computer host through the serial port, and the PWM drive chip turns off the backlight when detecting that the serial port has a power signal. Thereby, energy and cost can be effectively saved, and unnecessary energy waste can be avoided.

Figure 201911151172

Description

Display and desktop computer
Technical Field
The application relates to the technical field of liquid crystal display, in particular to a display and a desktop computer.
Background
Desktop computers are widely used in offices and entertainment venues due to their stable working performance and diversified display configurations. For various reasons, people often neglect to turn off the display when turning off the host, so that the backlight of the display is always bright, thereby causing waste of resources. As for a backlight of a Liquid Crystal Display (LCD), a Light Emitting Diode (LED) is widely used in the Display field due to its advantages of saturated color saturation, low power consumption, long life, short, small, Light, thin, and environmental protection. This waste is increasing due to the increasing brightness of the display. If the backlight of the display can be synchronously turned off along with the signal when people turn off the host, the loss caused by the constant brightness of the backlight can be saved.
Disclosure of Invention
The invention aims to provide a display and a desktop computer, which can effectively save energy and cost and avoid unnecessary energy waste.
The application provides a display, electric connection computer host computer, the display includes backlight and electricity and connects the drive circuit board of backlight, drive circuit board includes PWM driver chip and electricity and connects at least a serial ports of PWM driver chip, PWM driver chip passes through the serial ports electricity is connected the computer host computer. And when the PWM driving chip detects that the serial port has a power supply signal, the backlight source is closed.
According to a preferred embodiment of the present invention, the PWM driving chip further includes a signal processing circuit and a PWM control circuit coupled to the signal processing circuit, and the signal processing circuit is configured to convert the power signal transmitted by the host computer through the serial port into a level signal and send the level signal to the PWM control circuit.
According to a preferred embodiment of the present invention, the level signal includes a low level signal, and when the PWM control circuit receives the low level signal or no signal, the PWM control circuit turns off the backlight.
According to a preferred embodiment of the present invention, the level signal includes a high level signal, and when the PWM control circuit receives the high level signal, the PWM control circuit turns on the backlight.
Furthermore, the embodiment of the application also provides a desktop computer which comprises a computer and a display. The computer host comprises at least one connection port. The display is electrically connected with the computer host and comprises a backlight source and a driving circuit board electrically connected with the backlight source. The driving circuit board comprises a PWM driving chip and at least one serial port electrically connected with the PWM driving chip. The PWM driving chip is electrically connected with the connection port of the computer host through the serial port. And when the PWM driving chip detects that the serial port has a power supply signal, the backlight source is closed.
According to a preferred embodiment of the present invention, the PWM driving chip further includes a signal processing circuit and a PWM control circuit coupled to the signal processing circuit, and the signal processing circuit is configured to convert the power signal transmitted by the host computer through the serial port into a level signal and send the level signal to the PWM control circuit.
According to a preferred embodiment of the present invention, the level signal includes a low level signal, and when the PWM control circuit receives the low level signal or no signal, the PWM control circuit turns off the backlight.
According to a preferred embodiment of the present invention, the level signal includes a high level signal, and when the PWM control circuit receives the high level signal, the PWM control circuit turns on the backlight.
According to a preferred embodiment of the present invention, the at least one connection port includes a film graphic array interface, a digital video interface, a high definition multimedia interface, a DisplayPort interface, a universal serial bus interface, and a USB Type-C interface.
According to a preferred embodiment of the present invention, the at least one serial port includes a movie graphic array interface, a digital video interface, a high definition multimedia interface, a DisplayPort interface, a universal serial bus interface, and a USB Type-C interface.
The beneficial effect of this application does: the invention utilizes the backlight source in the display and the driving circuit board comprising the PWM driving chip to be electrically connected with the computer host through the serial port, and when the PWM driving chip detects that the serial port transmits a power supply signal, the backlight source is closed. Therefore, the invention can reduce the waste of personal and public property without increasing the cost, and has the most important significance of effectively saving energy and preserving resources and prolonging the service life of the display.
Drawings
In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for a person skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of a display and a desktop computer according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram illustrating a connection between a monitor and a desktop computer according to an embodiment of the present disclosure; and
fig. 3 is a schematic diagram of a display according to an embodiment of the present disclosure.
Detailed Description
Reference in the detailed description to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the same phrases in various places in the specification are not necessarily limited to the same embodiment, but are to be construed as independent or alternative embodiments to other embodiments. In light of the disclosure of the embodiments provided by the present invention, it should be understood by those skilled in the art that the embodiments described in the present invention can have other combinations or variations consistent with the concept of the present invention.
In the description of the present application, it is to be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "coupled," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
As shown in fig. 1 to 3, the present embodiment provides a display 1 electrically connected to a computer host 2 capable of transmitting a power signal (not shown). The electrical connection referred to herein is preferably for the purpose of transmitting the power signal via a physical transmission line/connection line, and in other minor embodiments, the electrical connection may transmit the power line number via wireless transmission.
The display 1 includes a backlight 11 and a driving circuit board 12 electrically connected to the backlight 11, where the driving circuit board 12 includes a PWM (Pulse Width Modulation) driving chip 121 and at least one serial port 122 electrically connected to the PWM driving chip 121. The PWM driving chip 121 is electrically connected to the computer main unit 2 through the serial port 122. When detecting that the serial port 122 has a power signal, the PWM driving chip 121 turns off the backlight 11. Specifically, when the PWM driving chip 121 determines that the power signal 22 receives the power signal 22 of the computer host 2 through the at least one serial port 122, the brightness of the backlight 11 is turned on or off.
Specifically, the Display 1 includes, but is not limited to, a Liquid Crystal Display (LCD), a Plasma Display Panel (PDP), a LED Display screen (LED), or a Cathode Ray Tube (CRT). The backlight 11 includes, but is not limited to, an electroluminescent sheet (EL), an organic electroluminescent sheet (OLED), a cold cathode fluorescent tube (CCFL), and a Light Emitting Diode (LED).
As shown in fig. 3, the PWM driving chip 121 further includes a signal processing circuit 122 and a PWM control circuit 123 coupled to the signal processing circuit 122. The signal processing circuit 233 is configured to convert the power signal 22 transmitted by the host computer 2 through the serial port 122 into a level signal 23, and then send the level signal to the PWM control circuit 123.
The level signal 23 includes a low level signal, and when the PWM control circuit 123 receives the low level signal or no signal, the PWM control circuit 123 does not output a signal to turn off the brightness of the backlight 11. The level signal 23 comprises a high level signal, and when the PWM control circuit 123 receives the high level signal, the PWM control circuit 123 outputs a signal 24 to turn on the brightness of the backlight 11.
Specifically, when the host computer 2 sends a signal, the power pin (not shown) in the serial port 122 receives the signal, and the voltage is, for example, 5V (volt), and then the signal is transmitted to the PWM control circuit 123. At this time, the signal processing circuit 122 converts the power supply signal 22 into a high level signal, and the PWM chip 121 outputs the signal to turn on the backlight 11. When the host computer 2 is turned off or in a standby state, there is no signal transmission, i.e. the serial port 122 does not receive the power signal 22. In other words, the power signal 22 is a low level signal, and the PWM chip 121 does not output the signal, so the backlight 11 is turned off. Thus, when the computer 2 is started/operated, the backlight source 11 is bright; the host computer 2 is turned off/not operated, and the backlight 11 is turned off, thereby achieving the purpose of effectively saving energy and cost and avoiding unnecessary energy waste.
Moreover, the application also provides a desktop computer, which comprises a computer host 2 and a display 1. The computer host 2 includes at least one connection port 21. The display 1 is electrically connected with the computer host 2, and the display 1 comprises a backlight source 11 and a driving circuit board 12 electrically connected with the backlight source 11. The driving circuit board 12 includes a PWM driving chip 121 and at least one serial port 122 electrically connected to the PWM driving chip 121. The PWM driving chip 121 is electrically connected to the connection port 21 of the computer main unit 2 through the serial port 122. Specifically, the PWM driving chip 121 determines that the power signal 22 receives the power signal 22 of the host computer 2 through the at least one serial port 122, so as to turn on or off the brightness of the backlight 11.
As shown in fig. 2, the at least one connection port 21 includes a Video Graphics Array (VGA) Interface, a Digital Visual Interface (DVI) Interface, a High Definition Multimedia Interface (HDMI), a displayport (dp) Interface, a Universal Serial Bus (USB) Interface, and a USB Type-C Interface. The at least one serial port 122 includes a Video Graphics Array (VGA) interface, a Digital Visual Interface (DVI) interface, a high-definition multimedia interface, a displayport (dp) interface, a Universal Serial Bus (USB) interface, and a USB Type-C interface.
Specifically, the at least one connection port 21 is electrically connected to the at least one serial port 122 through a transmission line (not shown). The connection port 21 or the serial port 122 has a power pin (not shown) therein, the voltage of the power pin is usually 5V, and the wiring of the PWM driving chip 121 is connected to the power pin of any serial port 122 to control the on/off of the backlight 11. Please refer to the above embodiments for other structures and connection relationships of the display 1, which are not described herein.
Therefore, the backlight source 11 in the display 1 and the driving circuit board 122 including the PWM driving chip 121 are electrically connected to the computer host 2 through the serial port 122, and when the PWM driving chip 121 detects that the serial port 122 transmits a power signal, the backlight source 11 is turned off. Therefore, the invention can reduce the waste of individuals and public property while not increasing the cost. The most important meaning is that the service life of the display 1 is prolonged while energy sources are effectively saved and resources are wasted.
In summary, although the present application has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present application, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, so that the scope of the present application shall be determined by the appended claims.

Claims (10)

1.一种显示器，电连接计算机主机，其特征在于，所述显示器包括背光源及电连接所述背光源的驱动电路板，所述驱动电路板包括PWM驱动芯片及电连接所述PWM驱动芯片的至少一串口，所述PWM驱动芯片通过所述串口电连接所述计算机主机；1. a display, electrically connected to a computer host, is characterized in that, the display comprises a backlight source and a drive circuit board electrically connected to the backlight source, the drive circuit board comprises a PWM drive chip and electrically connected to the PWM drive chip at least one serial port, the PWM driver chip is electrically connected to the computer host through the serial port; 所述PWM驱动芯片在检测到所述串口有电源信号时，关闭所述背光源。The PWM driving chip turns off the backlight when detecting that the serial port has a power signal. 2.根据权利要求1所述的显示面板，其特征在于，所述PWM驱动芯片包括信号处理电路以及耦接所述信号处理电路的PWM控制电路，所述信号处理电路用于将所述计算机主机通过所述串口传递的所述电源信号转换为电平信号后发送给所述PWM控制电路。2 . The display panel according to claim 1 , wherein the PWM driving chip comprises a signal processing circuit and a PWM control circuit coupled to the signal processing circuit, and the signal processing circuit is used to connect the computer host to the display panel. 3 . The power signal transmitted through the serial port is converted into a level signal and then sent to the PWM control circuit. 3.根据权利要求2所述的显示面板，其特征在于，所述电平信号包括低电平信号，当所述PWM控制电路接收到所述低电平信号或无信号时，所述PWM控制电路关闭所述背光源。3. The display panel according to claim 2, wherein the level signal comprises a low level signal, and when the PWM control circuit receives the low level signal or no signal, the PWM control The circuit turns off the backlight. 4.根据权利要求2所述的显示面板，其特征在于，所述电平信号包括高电平信号，当所述PWM控制电路接收到所述高电平信号时，所述PWM控制电路开启所述背光源。4. The display panel according to claim 2, wherein the level signal comprises a high level signal, and when the PWM control circuit receives the high level signal, the PWM control circuit turns on all the backlight source. 5.一种台式电脑，其特征在于，包括:5. a desktop computer, is characterized in that, comprises: 计算机主机，包括至少一连接埠；及a computer host, including at least one port; and 显示器，电连接所述计算机主机，所述显示器包括背光源及电连接所述背光源的驱动电路板，所述驱动电路板包括PWM驱动芯片及电连接所述PWM驱动芯片的至少一串口，其中所述PWM驱动芯片通过所述串口电连接所述计算机主机的所述连接埠，所述PWM驱动芯片在检测到所述串口有电源信号时，关闭所述背光源。a display, electrically connected to the computer host, the display includes a backlight source and a drive circuit board electrically connected to the backlight source, the drive circuit board includes a PWM drive chip and at least one serial port electrically connected to the PWM drive chip, wherein The PWM driver chip is electrically connected to the connection port of the computer host through the serial port, and the PWM driver chip turns off the backlight when detecting that the serial port has a power signal. 6.根据权利要求5所述的台式电脑，其特征在于，所述PWM驱动芯片还包括信号处理电路以及耦接所述信号处理电路的PWM控制电路，所述信号处理电路用于将所述计算机主机通过所述串口传递的所述电源信号转换为电平信号后发送给所述PWM控制电路。6 . The desktop computer according to claim 5 , wherein the PWM driving chip further comprises a signal processing circuit and a PWM control circuit coupled to the signal processing circuit, and the signal processing circuit is used to connect the computer to the computer. 7 . The power signal transmitted by the host through the serial port is converted into a level signal and sent to the PWM control circuit. 7.根据权利要求6所述的台式电脑，其特征在于，所述电平信号包括低电平信号，当所述PWM控制电路接收到所述低电平信号或无信号时，所述PWM控制电路以关闭所述背光源。7. The desktop computer according to claim 6, wherein the level signal comprises a low level signal, and when the PWM control circuit receives the low level signal or no signal, the PWM control circuit to turn off the backlight. 8.根据权利要求6所述的台式电脑，其特征在于，所述电平信号包括高电平信号，当所述PWM控制电路接收到所述高电平信号时，所述PWM控制电路开启所述背光源。8 . The desktop computer according to claim 6 , wherein the level signal comprises a high level signal, and when the PWM control circuit receives the high level signal, the PWM control circuit turns on the the backlight source. 9.根据权利要求5所述的台式电脑，其特征在于，所述至少一连接埠包括影片图形数组接口、数字视频界面接口、高清晰度多媒体接口、DisplayPort接口、通用串行总线接口及USB Type-C接口。9. The desktop computer of claim 5, wherein the at least one connection port comprises a video graphics array interface, a digital video interface interface, a high-definition multimedia interface, a DisplayPort interface, a universal serial bus interface, and a USB Type -C interface. 10.根据权利要求5所述的台式电脑，其特征在于，所述至少一串口包括影片图形数组接口、数字视频界面接口、高清晰度多媒体接口、DisplayPort接口、通用串行总线接口及USB Type-C接口。10. The desktop computer according to claim 5, wherein the at least one serial port comprises a film graphics array interface, a digital video interface interface, a high-definition multimedia interface, a DisplayPort interface, a universal serial bus interface and a USB Type- C interface.
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