Display device and all-in-one machine

Abstract

The utility model discloses a display device and an all-in-one machine, the display device comprises a power supply, a display screen, a processor, and an analog-to-digital converter ADC, a photoresistor and a dimming circuit which are respectively connected with the processor, the dimming circuit is connected with the display screen, and the display screen comprises a display screen body and a shell arranged around the display screen body. A light sensing hole is formed in the shell above or below the display screen body, the photoresistor is arranged in the light sensing hole, one end of the photoresistor is connected with a power supply, the other end of the photoresistor is connected with the analog-to-digital converter ADC, the photoresistor is used for reading an illumination value of the surrounding environment of the display screen, and the illumination value is converted into a voltage value through the analog-to-digital converter ADC and output to the processor; and the processor sends a control signal based on the voltage value and transmits the control signal to the dimming circuit to adjust the brightness of the display screen. The device is simple in structure and low in cost.

Description

Technical Field

[0001] The utility model relates to the field of display devices, in particular to a display device and an all-in-one machine with the display device. Background Art

[0002] With the development of science and technology, display devices such as all-in-one computers and flat-panel displays are becoming more and more popular in our lives and work. During the use of display devices, human eyes are very sensitive to the brightness of the surrounding environment of the display device, especially when the brightness changes suddenly, it will have an adverse effect on human vision. However, most current display devices adjust the brightness by setting adjustment buttons, and the adjustment buttons are divided into several different brightness levels for manual adjustment. However, this solution cannot achieve coordination with the brightness of the surrounding environment, and the adjustment is more troublesome. Utility Model Content

[0003] In view of the above technical problems, the utility model provides a display device with a simple structure and capable of automatically adjusting display brightness according to the external environment, and an all-in-one machine having the display device.

[0004] One embodiment of the utility model provides a display device, which includes a power supply, a display screen, a processor, and an analog-to-digital converter ADC, a photoresistor and a dimming circuit respectively connected to the processor, wherein the dimming circuit is connected to the display screen, and the display screen includes a display screen body and a shell arranged around the display screen body, a light-sensing hole is arranged on the shell above or below the display screen body, and the photoresistor is arranged in the light-sensing hole, one end of the photoresistor is connected to the power supply, and the other end is connected to the input port of the analog-to-digital converter ADC, the photoresistor is used to read the light value of the surrounding environment of the display screen, and convert it into a voltage value through the analog-to-digital converter ADC and output it to the processor, and the processor sends a control signal based on the voltage value to the dimming circuit to adjust the brightness of the display screen.

[0005] Optionally, the display device further includes a voltage divider circuit, which includes a resistor R1 and a resistor R2, wherein one end of the resistor R1 is connected to a photoresistor and the other end is grounded, and one end of the resistor R2 is connected to a photoresistor and the other end is connected to an analog-to-digital converter ADC.

[0006] Optionally, the light sensing hole is arranged at a middle position of the shell above or below the display screen body.

[0007] Optionally, the analog-to-digital converter ADC is integrated in the processor.

[0008] Optionally, the dimming circuit is a PWM chopping circuit, and the PWM chopping circuit is integrated in the processor.

[0009] Optionally, the PWM chopping circuit outputs a PWM pulse width signal according to different voltage values ​​input to the processor.

[0010] Optionally, the power supply is a 3.3V power supply.

[0011] Another embodiment of the present invention provides an all-in-one machine, which includes a support frame and any one of the display devices described above, wherein the support frame is used to support the display device.

[0012] In the technical solution provided by the embodiment of the utility model, a light-sensing hole is provided on the shell above or below the display screen body, and a photoresistor S is provided in the light-sensing hole. The photoresistor S automatically adjusts the brightness of the screen as the ambient light changes through an analog-to-digital converter ADC, and has a simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a front view of a display device of the present utility model.

[0014] Figure 2 The utility model is a schematic diagram of the internal structure of a display device.

[0015] Figure 3 The utility model is a schematic diagram of the external structure of an all-in-one machine. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0017] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0018] The utility model provides a display device, please refer to Figure 1 , Figure 2As shown, the display device includes a display screen 10, and the display screen 10 includes a display screen body 12 and a housing 11 arranged around the display screen body 12. Figure 1 The front view of the display screen is shown. The housing 11 includes an upper housing, a lower housing, and left and right housings. A light-sensing hole 13 is provided on the housing 11 above or below the display screen body 12, that is, the light-sensing hole 13 is provided on the upper housing or the lower housing. The display device also includes a power supply, a processor 30, and an analog-to-digital converter ADC, a photoresistor S, and a dimming circuit 40 respectively connected to the processor 30. The dimming circuit 40 is connected to the display screen 10. The photoresistor S is provided in the light-sensing hole 13. One end of the photoresistor S is connected to the power supply, and the other end is connected to the input port of the analog-to-digital converter ADC. The photoresistor S is used to read the light value of the surrounding environment of the display screen 10, and convert it into a voltage value through the analog-to-digital converter ADC and output it to the processor 30. The processor 30 sends a control signal based on the voltage value and transmits it to the dimming circuit 40 to adjust the brightness of the display screen 10.

[0019] The utility model has a light sensing hole 13 arranged on a shell 11 above or below a display screen body 12, a photoresistor S is arranged in the light sensing hole 13, and the photoresistor S automatically adjusts the brightness of the screen as the ambient light changes through an analog-to-digital converter ADC, has a simple structure and low cost.

[0020] In one embodiment of the utility model, the light sensing hole 13 is located on the shell 11 above the display screen body 12, and the photoresistor S in the light sensing hole 13 is used to detect the light intensity directly in front of the display screen 10. The light sensing hole 13 is set above the shell 11 of the display screen 10 to detect the light intensity directly in front of the display screen 10, and the detection is more accurate; in other embodiments, the light sensing hole 13 is located on the shell 11 below the display screen body 12.

[0021] The light sensing hole 13 is arranged at the middle position of the housing 11 above or below the display screen body 12. Preferably, the light sensing hole 13 is located on the central axis of the display screen 10 in the vertical direction, and such arrangement improves the appearance of the product.

[0022] In one embodiment of the present invention, the analog-to-digital converter ADC is integrated into the processor 30, that is, the analog-to-digital converter ADC can be integrated with the processor 30; of course, the analog-to-digital converter ADC and the processor 30 can also be independent of each other. The light value of the surrounding environment detected by the photoresistor S is an analog signal. In order to facilitate the processing of the processor 30, the current analog signal (current voltage value) can be converted into a digital signal (current voltage value) by the analog-to-digital converter ADC. Among them, the current voltage refers to the voltage of the photoresistor S under the current light value.

[0023] In one embodiment of the present invention, the dimming circuit 40 is a PWM chopper circuit, and the PWM chopper circuit is integrated in the processor 30, that is, the PWM chopper circuit can be integrated with the processor 30; of course, the PWM chopper circuit and the processor 30 can also be independent of each other. The PWM chopper circuit in the processor 30 outputs a PWM pulse width signal according to different voltage values ​​input to the processor 30.

[0024] In one embodiment of the present invention, the power supply is a 3.3V power supply.

[0025] In one embodiment of the present invention, the display device further includes a voltage divider circuit. Figure 2 As shown, the voltage divider circuit includes a resistor R1 and a resistor R2, one end of the resistor R1 is connected to one end of the photoresistor S, and the other end is grounded; the other end of the photoresistor S is connected to VCC, that is, a 3.3V power supply; one end of the resistor R2 is connected to one end of the photoresistor S, and the other end is connected to the input port of the analog-to-digital converter ADC.

[0026] The display device of the embodiment of the utility model can be a display of an all-in-one machine, or a display of a notebook computer, a television, or a desktop computer.

[0027] The utility model also provides an integrated machine, please refer to Figure 3 As shown, the all-in-one machine includes a support frame 20 and a display device, the support frame 20 is used to support the display device, the display device includes a display screen 10, the display screen 10 includes a display screen body 12 and a shell 11 arranged around the display screen body 12, and a light sensing hole 13 is arranged on the shell 11 above or below the display screen body 12. The display device also includes a power supply VCC, a processor 30, and an analog-to-digital converter ADC, a photoresistor S and a dimming circuit 40 respectively connected to the processor 30, the dimming circuit 40 is connected to the display screen 10, the photoresistor S is arranged in the photosensitive hole 13, one end of the photoresistor S is connected to the power supply VCC, and the other end is connected to the input port of the analog-to-digital converter ADC, the photoresistor S is used to read the light value of the surrounding environment of the display screen 10, and convert it into a voltage value through the analog-to-digital converter ADC and output it to the processor 30, and the processor 30 sends a control signal based on the voltage value to the dimming circuit 40 to adjust the brightness of the display screen 10.

[0028] In one embodiment of the present invention, the support frame 20 is installed on the back of the housing 11 of the display device, and the display device can be installed on a wall or supported on a desktop through the support frame 20 .

[0029] In the utility model, the resistance value of the photoresistor S in the display screen 10 changes accordingly according to the different light values ​​in the external environment, and the input voltage of the input port of the analog-to-digital converter ADC of the corresponding voltage divider circuit is different. The PWM chopper circuit sends a PWM pulse width signal through the signal output port of the processor 30 according to the different input voltage signals, and the current signal received by the display screen 10 changes with the different external light values. That is, when the photoresistor S detects that the light in the surrounding environment is weak, the brightness of the display screen 10 can be reduced, so that the brightness of the display screen 10 looks relatively soft, which can protect the eyes, and at the same time, the battery energy consumption of the display screen 10 can be reduced, and the working time can be extended. In the case of strong light, the brightness of the display screen 10 can be increased to ensure the display effect.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A display device, characterized in that: The display device includes a power supply, a display screen, a processor, and an analog-to-digital converter ADC, a photoresistor and a dimming circuit respectively connected to the processor. The dimming circuit is connected to the display screen. The display screen includes a display screen body and a shell arranged around the display screen body. A light-sensing hole is arranged on the shell above or below the display screen body. The photoresistor is arranged in the light-sensing hole. One end of the photoresistor is connected to the power supply, and the other end is connected to the input port of the analog-to-digital converter ADC. The photoresistor is used to read the light value of the surrounding environment of the display screen, and convert it into a voltage value through the analog-to-digital converter ADC and output it to the processor. The processor sends a control signal based on the voltage value and transmits it to the dimming circuit to adjust the brightness of the display screen.

2. The display device according to claim 1, characterized in that The display device further includes a voltage divider circuit, which includes a resistor R1 and a resistor R2. One end of the resistor R1 is connected to a photoresistor and the other end is grounded. One end of the resistor R2 is connected to a photoresistor and the other end is connected to an analog-to-digital converter ADC.

3. The display device according to claim 1, characterized in that The light sensing hole is arranged at the middle position of the shell above or below the display screen body.

4. The display device according to claim 1, characterized in that The analog-to-digital converter ADC is integrated in the processor.

5. The display device according to claim 1, characterized in that The dimming circuit is a PWM chopping circuit, and the PWM chopping circuit is integrated in the processor.

6. The display device according to claim 5, characterized in that: The PWM chopping circuit outputs a PWM pulse width signal according to different voltage values ​​input to the processor.

7. The display device according to claim 1, characterized in that The power supply is a 3.3V power supply.

8. An all-in-one machine, characterized in that: The all-in-one machine comprises a support frame and the display device according to any one of claims 1 to 7, wherein the support frame is used to support the display device.

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