Keyboards and other electronic input devices have a key or keys with glyphs that are invisible to an unaided human eye in a first condition, such as when an underlying display attached to the key is not emitting light. The glyphs are visible through the key or keys when the display emits light. A one-way visibility layer or structure obscures the visibility of the display when viewed from above, but when the display emits light, the light penetrates through the one-way visibility layer, such as by passing through an array of microperforations in the key, and is visible to an onlooker.

Keyboards and other electronic input devices have a key or keys with glyphs that are invisible to an unaided human eye in a first condition, such as when an underlying display attached to the key is not emitting light. The glyphs are visible through the key or keys when the display emits light. A one-way visibility layer or structure obscures the visibility of the display when viewed from above, but when the display emits light, the light penetrates through the one-way visibility layer, such as by passing through an array of microperforations in the key, and is visible to an onlooker.

A keyboard device with a display panel including a base, a scissors feet assembly movably disposed on the base, an elastic member disposed on the base, a display panel supported by the scissors feet assembly and the elastic member, and multiple light transmittance keycaps disposed on the display panel is provided. The display panel has multiple display surfaces, multiple hollow portions, and multiple elastic portions. Each of the display surfaces is surrounded by the hollow portions, and is suspended between the hollow portions by the elastic portions. The light transmittance keycaps respectively and correspondingly cover the display surfaces.

A keyboard device with a display panel including a base, a scissors feet assembly movably disposed on the base, an elastic member disposed on the base, a display panel supported by the scissors feet assembly and the elastic member, and multiple light transmittance keycaps disposed on the display panel is provided. The display panel has multiple display surfaces, multiple hollow portions, and multiple elastic portions. Each of the display surfaces is surrounded by the hollow portions, and is suspended between the hollow portions by the elastic portions. The light transmittance keycaps respectively and correspondingly cover the display surfaces.

A backlight module including a light guide plate, a circuit board, an electronic component, a reflective sheet, a light-shielding sheet, and a light-emitting component is provided. The light guide plate includes an escape opening. The circuit board is disposed under the light guide plate. The electronic component is disposed on the circuit board, and at least a part of the electronic component is located in the escape opening. The reflective sheet is disposed on the rear surface of the light guide plate and between the light guide plate and the circuit board, and the reflective sheet extends into the escape opening. The light-shielding sheet is disposed on the light emitting surface of the light guide plate opposite to the rear surface. The light-emitting component is disposed on the light guide plate. A luminous keyboard using this backlight module is also provided.

A backlight module including a light guide plate, a circuit board, an electronic component, a reflective sheet, a light-shielding sheet, and a light-emitting component is provided. The light guide plate includes an escape opening. The circuit board is disposed under the light guide plate. The electronic component is disposed on the circuit board, and at least a part of the electronic component is located in the escape opening. The reflective sheet is disposed on the rear surface of the light guide plate and between the light guide plate and the circuit board, and the reflective sheet extends into the escape opening. The light-shielding sheet is disposed on the light emitting surface of the light guide plate opposite to the rear surface. The light-emitting component is disposed on the light guide plate. A luminous keyboard using this backlight module is also provided.

A light-emitting keyboard includes a bracket, a keycap, a circuit layer, a composite light-emitting layer and a spacing layer. The bracket has an opening. The keycap is disposed on the bracket and connected to the bracket via a support assembly. The circuit layer is disposed between the keycap and the bracket. The composite light-emitting layer is disposed under the bracket, and includes a substrate, a circuit disposed on the substrate and a light source located under the keycap and electrically connected to the circuit, wherein light emitted from the light source is transmitted upwardly to the keycap. The spacing layer is disposed between the composite light-emitting layer and the bracket, wherein the spacing layer includes a hole corresponding to the opening of the bracket, and the light source is located in the hole of the spacing layer.

A light-emitting keyboard includes a bracket, a keycap, a circuit layer, a composite light-emitting layer and a spacing layer. The bracket has an opening. The keycap is disposed on the bracket and connected to the bracket via a support assembly. The circuit layer is disposed between the keycap and the bracket. The composite light-emitting layer is disposed under the bracket, and includes a substrate, a circuit disposed on the substrate and a light source located under the keycap and electrically connected to the circuit, wherein light emitted from the light source is transmitted upwardly to the keycap. The spacing layer is disposed between the composite light-emitting layer and the bracket, wherein the spacing layer includes a hole corresponding to the opening of the bracket, and the light source is located in the hole of the spacing layer.

An input device includes a display unit that displays an aerial image, and a detection unit that detects a user operation related to the aerial image. The display unit includes a light guide plate disposed between a half mirror and a retroreflective plate and a light source irradiating the light guide plate. The display unit displays the aerial image of a light diffusion surface formed on the light guide plate in response to incident light. When the user operation related to the aerial image is detected, the display unit turns off the light source to notify a user of input confirmation.

A keyboard includes a base plate and a backlight module. The base plate has a short axis direction and a long axis direction, and the base plate includes at least one long slit. The long slit is disposed on the base plate along the short axis direction. The backlight module is disposed on the base plate. The backlight module includes a shielding sheet, a light guide plate and a reflecting sheet. An upper surface of the shielding sheet faces toward the base plate. The light guide plate is disposed on a lower surface of the shielding sheet. The reflecting sheet is disposed below the light guide plate. The reflecting sheet includes a plurality of first slits. When the length of the base plate is adjusted along the long axis direction, the reflective sheet is adjusted and moved along with the base plate by expansion of the first slits.