Abstract: A tactile feedback device including a wearable device and a host is provided. The wearable device includes an acceleration sensor and an electrical stimulation generator. The acceleration sensor detects a movement state of a target object to obtain acceleration data. The electrical stimulation generator generates and transmits electrical stimulation to the target object according to a tactile control signal. The host includes a calculation circuit for calculating a displacement amount of the target object with respect to the host according to a signal attenuation amount of a radio wave signal and performing a calculation operation according to the displacement amount and the acceleration data to generate movement track information indicating a movement of the target object. The calculation circuit compares the movement track information with an object position in a display image to generate the tactile control signal. An operation method of the tactile feedback device is also provided.

Abstract: A tactile feedback device including a wearable device and a host is provided. The wearable device includes an acceleration sensor and an electrical stimulation generator. The acceleration sensor detects a movement state of a target object to obtain acceleration data. The electrical stimulation generator generates and transmits electrical stimulation to the target object according to a tactile control signal. The host includes a calculation circuit for calculating a displacement amount of the target object with respect to the host according to a signal attenuation amount of a radio wave signal and performing a calculation operation according to the displacement amount and the acceleration data to generate movement track information indicating a movement of the target object. The calculation circuit compares the movement track information with an object position in a display image to generate the tactile control signal. An operation method of the tactile feedback device is also provided.

Abstract: A concave display including a first substrate, a second substrate, a display medium, a color filter layer, an optical film and an active device layer is provided. The second substrate is disposed opposite to the first substrate. The display medium is disposed between the first substrate and the second substrate. The color filter layer is disposed on the first substrate. The active device layer is disposed on the first substrate or the second substrate. The optical film is disposed on the first substrate. The optical film is further away from the display medium than the color filter. The optical film includes a base material and optical microstructures embedded in the base material, wherein a refractive index of each of the optical microstructures is smaller than a refractive index of the base material.

Abstract: A convex display including a first substrate, a second substrate, a display medium, a color filter layer, an optical film and an active device layer is provided. The second substrate is disposed opposite to the first substrate. The display medium is disposed between the first substrate and the second substrate. The color filter layer is disposed on the first substrate. The active device layer is disposed on the first substrate or the second substrate. The optical film is disposed on the first substrate. The optical film is farther away from the display medium than the color filter. The optical film includes a base material and optical microstructures embedded in the base material, wherein a refractive index of each of the optical microstructures is larger than a refractive index of the base material.

Abstract: A convex display including a first substrate, a second substrate, a display medium, a color filter layer, an optical film and an active device layer is provided. The second substrate is disposed opposite to the first substrate. The display medium is disposed between the first substrate and the second substrate. The color filter layer is disposed on the first substrate. The active device layer is disposed on the first substrate or the second substrate. The optical film is disposed on the first substrate. The optical film is farther away from the display medium than the color filter. The optical film includes a base material and optical microstructures embedded in the base material, wherein a refractive index of each of the optical microstructures is larger than a refractive index of the base material.

Abstract: A concave display including a first substrate, a second substrate, a display medium, a color filter layer, an optical film and an active device layer is provided. The second substrate is disposed opposite to the first substrate. The display medium is disposed between the first substrate and the second substrate. The color filter layer is disposed on the first substrate. The active device layer is disposed on the first substrate or the second substrate. The optical film is disposed on the first substrate. The optical film is further away from the display medium than the color filter. The optical film includes a base material and optical microstructures embedded in the base material, wherein a refractive index of each of the optical microstructures is smaller than a refractive index of the base material.