TWI730778B - Display apparatus and method for driving the same - Google Patents

Abstract

A display apparatus includes a display panel, a sensing module and an actuator. The sensing module includes a first sensing device and a second sensing device. The first sensing device is used to detect the existence of a user in front of the display panel and to turn on the display panel based on the detection. The second sensing device is used to receive and determine the intensity of a portion of an ambient physical quantity. The actuator is used to move the second sensing device for receiving and determining the intensity of the portion of the ambient physical quantity.

Description

Display device and driving method thereof

This disclosure relates to a display device and a driving method thereof, in particular to a display device equipped with a sensing module and a driving method thereof.

Normal display devices, such as liquid crystal display (LCD), provide image brightness that is usually set to a fixed value. Therefore, users using LCD devices in the daytime may not see clearly because the screen is too dark. Using it at night may make your eyes tired because the screen is too bright. In addition, the brightness and color of the screen provided by the liquid crystal display device may also deviate over time. The prior art then proposes a liquid crystal display device with an optical sensor to detect the brightness of the ambient light to provide the correct brightness and color of the image of the liquid crystal display device.

However, in order to detect the ambient light that changes with time, the optical sensor must be turned on frequently. When the user leaves for a long time, the optical sensor will continue to be turned on. Long-term use will not only easily lead to unnecessary consumption of components and waste of power.

Therefore, there is a need to provide an advanced display device and a driving method thereof to solve the problems faced by the prior art.

An embodiment of the present specification provides a display device including: a display screen, a sensing module, and a brake. The sensing module includes a first sensor and a second sensor. The first sensor is used to detect the user located in front of the display screen and turn on the display screen. The second sensor is used for receiving and detecting the intensity of a part of the environmental physical quantity incident from the front of the display screen. The brake is used to move the second sensor to receive and detect the intensity of the incident part of the environmental physical quantity.

Another embodiment of this specification provides a driving method of a display device. The display device includes a display screen, a sensing module, and a brake. The sensing module includes a first sensor and a second sensor. The driving method of the display device includes the following steps: firstly, a first sensor is used to detect whether there is a user in front of the display screen, and when the user is detected, the display screen is turned on. Then, in response to the opening of the display screen or the user's operation, the brake is driven to move the second sensor to receive and detect a part of the environmental physical quantity incident from the elevation direction of the horizontal plane in front of the display screen or the lateral angle direction of the horizontal plane parallel to the horizontal plane. Intensity, and adjust the brightness color or sound volume of the display screen according to the intensity of this part of the environmental physical quantity.

According to the above-mentioned embodiments, the embodiments of this specification provide a display device and a driving method thereof. A plurality of sensors are integrated on the display device, one of the sensors detects whether there is a user in front of the display screen, and when the user is detected, the display screen is turned on. Then, in response to the opening of the display screen or the user's operation, the brake is driven to move another sensor to receive and detect the front of the display screen The intensity of a part of the environmental physical quantity (for example, brightness, color, or sound) incident in the horizontal plane elevation or lateral angle direction, and the brightness, color, or sound volume displayed on the display screen is adjusted according to the intensity of this part of the environmental physical quantity. In order to provide the user of the display device with the best image and sound and light display effect in real time. At the same time, it solves the problem that the display screen and the built-in sensor of the display device continue to be turned on when the user leaves for a long time, which causes unnecessary consumption of components and waste of power.

In order to have a better understanding of the above and other aspects of this specification, the following specific examples are given in conjunction with the accompanying drawings to describe in detail as follows:

100: display device

101: display screen

101a: Show the long side of the screen

101b: Display the short side of the screen

101c: Display the central axis of the screen

101d: display surface

101e: Show the bottom of the screen

101p: pixel

102: Sensing module

102A: The first sensor

102A1: Light receiving element

102B: second sensor

102B1: Light receiving element

103: Brake

103a: Transmission element

104: circuit board

105: Operation button

106: control circuit

U: User

H: second length

P level

L: first length

θ1: the first angle

θ2: second angle

K: Environmental physical quantity

S201: Use the first sensor to detect whether there is a user in front of the display screen

S202: Turn on the display screen

S203: In response to the opening of the display screen or the operation of the user, drive the brake to move the second sensor to the sensing position

S204: Receive and detect the intensity of a part of the environmental physical quantity incident from the elevation direction of the horizontal plane or the lateral angle direction of the parallel horizontal plane through the second sensor

S205: Adjust the brightness or sound volume of the display screen according to the intensity of the physical quantity of this part of the environment

Fig. 1A is a schematic diagram of a perspective structure of a display device according to an embodiment of this specification; Fig. 1B is a schematic diagram of a side view structure of the display device according to Fig. 1A; and Fig. 2 is a schematic diagram of a display device according to this An embodiment of the specification shows a flow chart of a method for driving a display device.

This manual is to provide a display device and its driving method, which can provide users of the display device with the best image and sound and light display effect in real time. There is a problem of unnecessary loss and power waste. In order to compare the above-mentioned embodiment of this specification and its Other purposes, features, and advantages can be more obvious and easy to understand. Hereinafter, a plurality of preferred embodiments will be cited in conjunction with the accompanying drawings for detailed description.

However, it must be noted that these specific implementation cases and methods are not intended to limit the present invention. The present invention can still be implemented using other features, elements, methods, and parameters. The preferred embodiments are only used to illustrate the technical features of the present invention, and not to limit the scope of the patent application of the present invention. Those with ordinary knowledge in this technical field will be able to make equivalent modifications and changes based on the description of the following specification without departing from the spirit of the present invention. In different embodiments and drawings, the same elements will be represented by the same element symbols.

Please refer to FIG. 1A and FIG. 1B. FIG. 1A is a perspective structure diagram of a display device 100 according to an embodiment of the present specification; FIG. 1B is a schematic diagram of the display device 100 depicted in FIG. 1A. Schematic diagram of side structure. This type of display device 100 includes a display screen 101, a sensing module 102 and a brake 103.

The display screen 101 is placed on the stand 110 and includes a display surface 101d facing the user U. The sensing module 102 includes at least a first sensor 102A and a second sensor 102B, and is disposed on the display screen 101. The brake 103 is provided corresponding to the sensing module 102 for moving at least one of the first sensor 102A and the second sensor 102B.

In some embodiments of this specification, the display screen 101 may be a liquid crystal display screen (but not limited to this), with a long side 101a, a short side 101b, and a central axis 101c perpendicular to the long side 101a. Among them, the long side 101a of the display screen 101 is parallel to the horizontal plane P and has a first length L; the short side 101b The long side 101a is connected and has a second length H. The sensing module 102 is arranged on the display screen 101, extending from the central axis 101c parallel to the long side 101a to both sides by 1/4 of the first length (1/4L), and from the bottom 101e of the display screen 101 upward along the short side 101b Extend within the range of 1/2 second length (1/2H).

1/2H)的位置。在本說明書的又一實施例中，可以將感測模組102的尺寸微縮，而將其設置在顯示面101d中的一個畫素101p之中。 For example, in this embodiment, the sensing module 102 may be disposed on the edge of the bottom 101e (lower long side L) of the display screen 101. However, it is worth noting that the position of the sensing module 102 is not limited to this. In another embodiment of this specification, the sensing module 102 can be arranged on both short sides 101b of the display screen 101, by The bottom 101e of the display screen 101 extends upward along the short side 101b and is less than or equal to 1/2 the second length (

1/2H) position. In another embodiment of the present specification, the size of the sensing module 102 can be reduced, and it is arranged in one pixel 101p on the display surface 101d.

Among them, the first sensor 102A of the sensing module 102 is used to detect the user U located in front of the display surface 101d of the display screen 101, and send out a sensing signal, so that the display screen 101 responds to the sensing signal And turn it on. In some embodiments of the present specification, the first sensor 102A of the sensing module 102 may be a proximity sensor (proximity sensor), which may not touch the detection object (that is, located on the display surface 101d of the display screen 101). The detection is performed on the premise of the user U) in front to obtain the movement information or the presence or absence information of the detection object.

For example, by emitting electromagnetic fields or electromagnetic radiation (such as infrared beams) in front of the display surface 101d of the display screen 101, and detecting changes in the electric field in front of the display surface 101D or changes in electromagnetic radiation reflection signals; or directly detecting a period of time Intermittently display changes in electrical energy (including electrostatic capacity), magnetic field, acoustic energy, light energy, radiant energy (including thermal energy), or any combination of the foregoing, in front of the display surface 101d of the screen 101, and changes these energies through electromagnetic induction Convert it into an electronic signal; then use the value of the electronic signal to determine whether the user U is in front of the display surface 101d of the display screen 101, or calculate the distance between the user U and the display surface 101d.

The second sensor 102B of the sensing module 102 is used to receive and detect the intensity of a part of the environmental physical quantity K (for example, ambient light or sound) incident from the front of the display surface 101d of the display screen 101. In some embodiments of this specification, the second sensor 102B may be a photometric sensor for converting the received ambient light into an electronic signal. Wherein, the second sensor 102B may include a light receiving element 102B1, such as a photodiode, a streak camera, a charge-coupled device (CCD, charge-coupled device), or an enhanced charge-coupled device ( ICCD, Intensified CCD).

For example, in this embodiment, the first sensor 102A of the sensing module 102 may be a laser ranging sensor that can emit an infrared beam and detect the reflected beam; the first sensor 102A and the second sensor 102A The two sensors 102B can be arranged on the same circuit board 104; and the laser range sensor/proximity sensor (first sensor 102A) and photometric sensor (second sensor 102A) of the sensing module 102 The sensor 102B) can share one light receiving element 102B1. But in another embodiment, the first sensor 102A and the second sensor 102B are respectively disposed on different circuit boards (not shown); and The first sensor 102A of the sensing module 102 has an independent light receiving element 102A1, and does not share the light receiving element 102B1 with the second sensor 102B.

The brake 103 is disposed on the display screen 101, and is movably connected to at least one of the first sensor 102A and the second sensor 102B in the sensing module 102 by a transmission element 103a. For example, in this embodiment, the brake 103 is disposed on one side of the sensing module 102, and is movably connected to the second sensor 102B by a rotating shaft (driving element 103a). The light-receiving element 102B1 of the second sensor 102B is driven by the rotating shaft in the elevation direction of the horizontal plane P to rotate upward by a first angle θ1, or based on the central axis 101c of the display screen 101, parallel to the horizontal plane P left and right (that is, along the horizontal plane P). Lateral angle direction) rotate a second angle θ2 to receive and detect a part of the incident in the direction of the elevation angle (first angle θ1) in front of the display surface 101d of the display screen 101 or the direction of the lateral angle (second angle θ2) parallel to the horizontal plane P Environmental physical quantity K (for example, environmental light or sound).

However, the position of the brake 103 is not limited to this. In some embodiments of this specification, a remote driving element (not shown) that is not arranged on the display screen 101 may be further included, and the transmission element 103a can movably interact with the first sensor in the sensing module 102 through the transmission element 103a. At least one of the sensor 102A and the second sensor 102B is connected. Driven by a remote driving element, such as a belt, a sliding rail, or a connecting rod (not shown), drive at least one of the first sensor 102A and the second sensor 102B to move to receive and detect the display screen 101 A part of the environmental physical quantity K (for example, ambient light or sound) incident in the direction of the elevation angle (first angle θ1) in front of the display surface 101d or the direction of the lateral angle (second angle θ2) parallel to the horizontal plane P.

In some embodiments of this specification, the brake 103 drives the light receiving element 102B1 of the second sensor 102B to rotate upward at the first angle θ1 or the second angle θ2 at which the horizontal plane P rotates laterally (but not limited to this) ) Is between 45° and 90°. In this embodiment, the first angle θ1 of upward rotation may preferably be 65°; the second angle θ2 of lateral rotation, based on the central axis 101c of the display screen 101, may preferably be 45°.

In addition, in the embodiment in which the first sensor 102A and the second sensor 102B are arranged on the same circuit board 104, when the actuator 103 is driving the second sensor 102B to move (for example, driving the second sensor 102B) When the light receiving element 102B1 rotates upwards), it also drives the first sensor 102A to move together (for example, drives the light receiving element 102A1 of the first sensor 102A to move together).

In some embodiments of this specification, the display device 100 may also include an operation button 105 provided on the display screen 101, which allows the user U to press the operation button 105 through a wire (not shown) or a radio transceiver element (Not shown) output a notification signal to the control circuit 106 of the display device 100. Then the control circuit 106 outputs an operation signal through a wire (not shown) or a radio transceiver (not shown) to drive the brake 103 to move the second sensor 102B in the sensing module 102 movably to receive and The intensity of a part of the environmental physical quantity K (for example, ambient light or sound) incident from the front of the display surface 101d of the display screen 101 is detected.

Please refer to FIG. 2. FIG. 2 is a flowchart of a driving method of a display device 100 according to an embodiment of the present specification. Display device 100 The driving method includes the following steps: first, the first sensor 102A is used to detect whether there is a user U in front of the display screen 101 (such as step S201). When the user U is detected, the display screen 101 is turned on (as in step S202).

Then, in response to the opening of the display screen 101 or the user's operation, the actuator 103 is driven to move the second sensor 102B to a sensing position (step S203). For example, in some embodiments of this specification, the sensing position may be based on the environmental physical quantity receiving element (for example, the light receiving element 102B1) of the second sensor 102B, and the first horizontal plane P in front of the display screen 101 is rotated upward. The position of the angle θ1; or the position where the second angle θ2 is rotated left and right on the parallel horizontal plane P based on the central axis 101c of the display screen 101.

Then, the second sensor 102B receives and detects the intensity of a part of the environmental physical quantity K incident from the elevation direction of the horizontal plane or the lateral angle direction of the parallel horizontal plane (step S204). Afterwards, the brightness, color or sound volume of the display screen is adjusted according to the intensity of the part of the environmental physical quantity K (such as step S205).

In some embodiments of the present specification, when the brake 103 is driven to move the second sensor 102B, the control circuit 106 can immediately turn off the first sensor 102A. When the user U presses the operating button 105 before leaving to send another notification signal, the control circuit 106 can respond to the notification signal to turn off the second sensor 102B and return it to its original position; at the same time, turn on the first sensor 102A again .

In some other embodiments of this specification, the first sensor 102A can be kept in the on or timed scanning state. When the first sensor 102A detects that the user U has left (there is no use before the screen 101 is displayed) When U), the control power The circuit 106 may notify the driving brake 103 to return the second sensor 102B to the original position and turn off the second sensor 102B.

According to the above-mentioned embodiments, the embodiments of this specification provide a display device and a driving method thereof. A plurality of sensors are integrated on the display device, one of the sensors detects whether there is a user in front of the display screen, and when the user is detected, the display screen is turned on. Then, in response to the opening of the display screen or the operation of the user, the brake is driven to move another sensor to receive and detect a part of the environmental physical quantity (such as brightness, color, etc.) incident from the horizontal elevation or lateral angle in front of the display screen. Or sound) intensity, and adjust the brightness, color, or sound volume displayed on the display screen according to the intensity of the physical quantity of this part of the environment. In order to provide the user of the display device with the best image and acousto-optic display effect in real time. At the same time, it solves the problem that the display screen and the built-in sensor of the display device continue to be turned on when the user leaves for a long time, which causes unnecessary consumption of components and waste of power.

Although the present invention has been disclosed as above in the preferred embodiment, it is not intended to limit the present invention. Anyone with ordinary knowledge in the technical field can make some changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to those defined by the attached patent application scope.

100: display device

101: display screen

101a: Show the long side of the screen

101b: Display the short side of the screen

101c: Display the central axis of the screen

101d: display surface

101e: Show the bottom of the screen

101p: pixel

102: Sensing module

102A: The first sensor

102A1: Light receiving element

102B: second sensor

102B1: Light receiving element

103: Brake

104: circuit board

105: Operation button

106: control circuit

U: User

H: second length

P: horizontal plane

L: first length

θ1: the first angle

θ2: second angle

K: Environmental physical quantity

Claims (9)

A display device, comprising: a display screen; a sensing module, including: a first sensor for detecting a user located in front of the display screen to turn on the display screen; and a second sensor A sensor for receiving and detecting an intensity of a part of the environmental physical quantity incident from the front of the display screen; and a brake for moving the second sensor to receive and detect the intensity, wherein the The second sensor includes a first receiving element, and the actuator drives the first receiving element to rotate up a horizontal plane by a first angle, or rotate parallel to the horizontal plane by a second angle to receive the part of the environmental physical quantity. The display device according to claim 1, wherein the first angle and the second angle are between 45° and 90°; the first sensor includes a second receiving element; the first sensor The sensor and the second sensor are arranged on a circuit board. The display device described in item 1 of the scope of patent application, wherein the part of the environmental physical quantity is an ambient light; the first sensor is a proximity sensor; the second sensor is a luminosity sensor The first receiving element includes a photodiode (Photo Diode), and the proximity sensor and the photometric sensor share the first receiving element. The display device described in item 3 of the scope of patent application, wherein the proximity sensor is used to detect an electric energy change, a magnetic field change, a sound energy change, and a light energy change of the user in front of the display screen , A change in radiant energy or any combination of the foregoing. The display device described in item 3 of the scope of patent application, wherein the photodiode is located in a pixel in the display screen. The display device according to claim 1, wherein the display screen has a long side, a short side connecting the long side, and a central axis perpendicular to the long side; the long side has a first length (L ), the short side has a second length (H); the sensing module is located from the central axis extending to both sides by 1/4 the first length (1/4L), and from a bottom edge of the display screen The short side extends upward within a range of 1/2 the second length (1/2H). For example, the display device described in item 1 of the scope of patent application further includes a button, which is arranged on the display screen and is electrically connected to the sensing module; it is used to generate a signal in response to the user's pressing to drive The brake moves the second sensor to receive and detect the part of the environmental physical quantity. For example, the display device described in claim 1 further includes a control circuit, which is electrically connected to the sensing module, and generates a signal in response to the opening of the display screen to drive the brake to move the second sensor , So as to receive and detect this part of the environmental physical quantity. A driving method of a display device is suitable for a display device. The display device includes a display screen, a sensing module and a brake. The sensing module includes a first sensor and a second sensor, The method includes: detecting whether there is a user in front of the display screen with the first sensor, turning on the display screen when the user is detected; responding to the opening of the display screen or an operation of the user , Driving the brake to move the second sensor to receive and detect an intensity of a part of the environmental physical quantity incident from an elevation direction of a horizontal plane in front of the display screen or a lateral angle direction parallel to the horizontal plane; and according to The intensity adjusts a brightness, a color, or a volume of the display screen.

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