The present disclosure relates to a display panel, a display device and a smart watch, wherein, the display panel includes a liquid crystal display panel; and a light-exiting surface of the liquid crystal display panel is provided with a cholesteric liquid crystal display film layer; wherein, the cholesteric liquid crystal display film layer is switchable between a scattering state and a transparent state depending on a voltage applied thereto, and is used for displaying by means of its scattering state when the liquid crystal display panel is powered off.

A display device includes a display panel, a light emitting section, and a cover provided on a display surface side of the display panel and configured to guide light emitted from the light emitting section and irradiate the display surface.

According to one embodiment of the preset specification, a method for controlling a wearable device for displaying visual information on a first display area and on a second display area can comprises the steps of: detecting that the wearable device has been changed to a charging state; displaying first visual information on a first display area; displaying second visual information on a second display area; detecting an event relating to a first application while the wearable device is in a charging state; and displaying, on the second display area, third visual information relating to the first application. At this time, the first visual information of the first display area can be displayed on a display unit of the wearable device, and the second visual information of the second display area can be displayed on the basis of a light source projected outside of the wearable device.

A modular light assembly is designed for integration with wearable devices. For example, the modular light assembly can connect with a wearable device, such as a smartwatch, including both a device housing and a band of the wearable device. Additionally, the modular light assembly can receive communication from the wearable device through various means, including inductive energy transfer. As a result, the modular light assembly can receive communication from the wearable device to activate (turn on) or deactivate (turn off) one or more light sources of the modular light assembly. Additionally, or alternatively, the modular light assembly device may include a button coupled to a switch that can activate or deactivate the light source(s).

A liquid crystal display (LCD) device including a circular backlight that illuminates an LCD panel. The backlight is disposed behind the LCD panel and includes a light guide and an array of light emitting diodes (LEDs). The light guide includes a circular top surface, a circular bottom surface, and a connecting surface between the top and bottom surface. The array of LEDs are disposed along the connecting side surface of the light guide in a circular arrangement to emit light into in first directions toward a center of the light guide. The light guide receives the light from the array of LEDs in the first directions and directs the light in a second direction toward the LCD panel from the circular top surface. The backlight can include brightness enhancement films (BEFS), such as first BEF having concentric circular stripe prisms, and a second BEF having radial stripe prisms.

A display arrangement for a watch case comprising a display module and a substantially transparent cover extending over the display module, wherein the cover comprises a layer forming a substantially opaque area outside the display module. The display arrangement further comprises one or more light emitting devices arranged below the opaque area, wherein the layer comprises a plurality of discontinuities that allows light to be transmitted through the opaque area from the one or more light emitting devices.

A liquid crystal display (LCD) device including a circular backlight that illuminates an LCD panel. The backlight is disposed behind the LCD panel and includes a light guide and an array of light emitting diodes (LEDs). The light guide includes a circular top surface, a circular bottom surface, and a connecting surface between the top and bottom surface. The array of LEDs are disposed along the connecting side surface of the light guide in a circular arrangement to emit light into in first directions toward a center of the light guide. The light guide receives the light from the array of LEDs in the first directions and directs the light in a second direction toward the LCD panel from the circular top surface. The backlight can include brightness enhancement films (BEFS), such as first BEF having concentric circular stripe prisms, and a second BEF having radial stripe prisms.

An electronic device includes a display module having a hole and including a plurality of first light sources disposed along a perimeter of one side of the display module and a plurality of second light sources which are positioned opposite the plurality of first light sources and are disposed along a perimeter of the other side of the display module, a shaft rotatably inserted into the hole of the display module, a movement which is positioned in the rear of the display module, is connected to one end of the shaft, and provides a rotational force for the shaft, a window which is separated from the display module and is positioned in front of the display module, and a hand which is positioned between the display module and the window and is fixed to the other end of the shaft.

An electronic device includes a display module having a hole and including a plurality of first light sources disposed along a perimeter of one side of the display module and a plurality of second light sources which are positioned opposite the plurality of first light sources and are disposed along a perimeter of the other side of the display module, a shaft rotatably inserted into the hole of the display module, a movement which is positioned in the rear of the display module, is connected to one end of the shaft, and provides a rotational force for the shaft, a window which is separated from the display module and is positioned in front of the display module, and a hand which is positioned between the display module and the window and is fixed to the other end of the shaft.

A display device (100) for a watch (1000) including at least one light source (200) and including, between a dial (300) carrying at least one reference scale on a top side (301) and a crystal (400) on the side facing the user a set of hands (10) coaxial about an axis of rotation (D) including at least a first luminous indicator (1) including a first light guide (11) arranged to diffuse some of the light emitted by said at least one light source (200), wherein the first light guide (11) includes first coupling microstructures (110) which are arranged to allow light to enter the first light guide (11) and/or to allow light to exit the first light guide (11).