A display apparatus includes a guide element, and an incident optical system causing light from a display element to enter the guide element. The guide element includes a first light guide part guiding the light from the incident optical system in a first direction and a second light guide part guiding the light from the first light guide part in a second direction intersecting with the first direction. The first light guide part has mirrors disposed along the first direction and guiding the light to the second light guide part by reflection. The mirrors include a first mirror and a second mirror. Each of the first and second mirrors has a first reflection region and a second reflection region having a higher reflectance than the first reflection region. Light having transmitted through the first reflection region of the first mirror enters the second reflection region of the second mirror.

A display apparatus and a control method thereof are provided. The display apparatus includes: a display, a driver configured to rotate the display between a horizontal arrangement state in which a width of the display is greater than a height of the display, and a vertical arrangement state in which the height of the display is greater than the width of the display; and a processor configured to execute instructions to: identify an object included in an image, identify whether the image is an image of a horizontal type or an image of a vertical type based on the identified object, and based on an arrangement state of the display and the identified type of the image, control the driver to rotate the display.

A display apparatus includes: a guide element including a first part guiding light from the incident optical system in first direction and a second part guiding the light from the first part in second direction intersecting with the first direction; and an incident optical system. The first part has a first mirrors guiding the light to the second propagation part by reflection. The second part has a second mirror set causing the light to exit in third direction from the light element by reflection. The first part has a first reflection surface facing the first mirrors. The second part has a second reflection surface facing the second mirrors. The incident optical system causes the light coming from the display element to enter the first part obliquely with respect to the second and third directions. The first mirrors are disposed between the first reflection surface and the second part.

Disclosed are an installation support and a display device. The installation support includes at least two carbon-fiber vertical frames and two aluminum-alloy horizontal frames. Each of the carbon-fiber vertical frames are spaced in sequence. One end of each carbon-fiber vertical frame is connected to one of the aluminum-alloy horizontal frames, and the other end is connected to the other aluminum-alloy horizontal frame. The aluminum-alloy material is precise in manufacturing reproduction, and can be repeatedly processed to ensure the reproduction accuracy. When the two aluminum-alloy horizontal frames of the two installation supports are installed, the two aluminum-alloy horizontal frames can be matched with each other more accurately. The bearing strength is high of the carbon-fiber vertical frame in one direction, so that the carbon-fiber vertical frame can be configured for bearing the force exerted by one of the aluminum-alloy horizontal frames towards or away from the other aluminum-alloy horizontal frame.

Disclosed are an installation support and a display device. The installation support includes at least two carbon-fiber vertical frames and two aluminum-alloy horizontal frames. Each of the carbon-fiber vertical frames are spaced in sequence. One end of each carbon-fiber vertical frame is connected to one of the aluminum-alloy horizontal frames, and the other end is connected to the other aluminum-alloy horizontal frame. The aluminum-alloy material is precise in manufacturing reproduction, and can be repeatedly processed to ensure the reproduction accuracy. When the two aluminum-alloy horizontal frames of the two installation supports are installed, the two aluminum-alloy horizontal frames can be matched with each other more accurately. The bearing strength is high of the carbon-fiber vertical frame in one direction, so that the carbon-fiber vertical frame can be configured for bearing the force exerted by one of the aluminum-alloy horizontal frames towards or away from the other aluminum-alloy horizontal frame.

A display device includes a display module from which heat is emitted; a connection rod coupled to the display module and with which the display module is mountable to a structure disposed external to the display device and spaced apart from the display module along a first direction, the connection rod lengthwise extending along the first direction; and a heat pipe disposed inside the connection rod and lengthwise extending along the first direction.

A photoelectric conversion apparatus having a first substrate and a second substrate overlaid on each other and including electrically conductive portions is provided. The first substrate includes a photoelectric conversion element, a first portion configured to form part of a first surface, a second portion which is included in an electrically conductive pattern closest to the first portion, and a third portion which is included in an electrically conductive pattern second closest to the first portion. The second substrate includes a fourth portion configured to form part of a second surface, and a circuit. In a planar view with respect to the first surface, an area of the first portion is smaller than an area of the second portion and larger than an area of a portion of the third portion overlaying the second portion.

A photoelectric conversion apparatus having a first substrate and a second substrate overlaid on each other and including electrically conductive portions is provided. The first substrate includes a photoelectric conversion element, a first portion configured to form part of a first surface, a second portion which is included in an electrically conductive pattern closest to the first portion, and a third portion which is included in an electrically conductive pattern second closest to the first portion. The second substrate includes a fourth portion configured to form part of a second surface, and a circuit. In a planar view with respect to the first surface, an area of the first portion is smaller than an area of the second portion and larger than an area of a portion of the third portion overlaying the second portion.

An audio-visual adjustment device includes an adjustment mechanism, a detection circuit, a control circuit and a driver. The detection circuit, the control circuit and the driver are disposed on the adjustment mechanism. The adjustment mechanism is used to clamp and adjust an audio-visual device. The detection circuit is used to detect a target object and obtain description information of the target object. The control circuit is used to determine an adjustment angle of the audio-visual device based on the description information of the target object and current position information of the audio-visual device. The driver is used to drive the adjustment mechanism to adjust at least one of a position and an angle of the audio-visual device based on the adjustment angle, thereby enabling the audio-visual device to be oriented towards the target object.

An audio-visual adjustment device includes an adjustment mechanism, a detection circuit, a control circuit and a driver. The detection circuit, the control circuit and the driver are disposed on the adjustment mechanism. The adjustment mechanism is used to clamp and adjust an audio-visual device. The detection circuit is used to detect a target object and obtain description information of the target object. The control circuit is used to determine an adjustment angle of the audio-visual device based on the description information of the target object and current position information of the audio-visual device. The driver is used to drive the adjustment mechanism to adjust at least one of a position and an angle of the audio-visual device based on the adjustment angle, thereby enabling the audio-visual device to be oriented towards the target object.