Abstract: The present invention discloses a touch screen and a driving method for the same, the touch screen including: a touch detection area, a processing unit, emission tubes and reception tubes, the emission tubes and the reception tubes being located at the edge of the touch detection area to provide infrared to form a scanning grid, the touch screen also including a background light source which provides auxiliary light to the infrared. The present invention also discloses a corresponding driving method for the touch screen. The touch screen and the driving method for the same of the present invention may reduce the impact of the dark environment on the period required for the received signal in the touch screen to reach stability.

Abstract: This invention provides an infrared touch screen, comprising: a touch detecting region; a plurality of edges containing at least a first edge and a second edge, wherein the first edge and the second edge are opposite to each other, there are infrared emitters and infrared receivers fixed on the first edge and there are infrared emitters and infrared receivers fixed on the second edge; and a phase managing mechanism configured to control the phase alternation of the infrared touch screen which has a plurality of phases containing at least a first phase and a second phase. With the structure change and phase managing mechanism application in this infrared touch screen, the light interference caused by varying ambient light can be reduced or eliminated effectively.

Abstract: A touch screen, a touch system and a method for positioning a touch object in a touch system are disclosed. The touch screen comprises an infrared pair tube array, wherein said infrared pair tube array is disposed on an edge of said touch screen. By introducing the infrared pair tube array, the touch screen of the present invention eliminates invalid touch areas in the existing touch screen and avoids false touch points in multipoint positioning.

Abstract: An interactive display device is disclosed. The interactive display device comprises: a housing, a user interface surface which is coupled with the housing, a display panel which is disposed under the user interface surface, an area light detector which is disposed under the display panel and configured to detect invisible light reflected by an object which is on or adjacent to the user interface surface, a plane light guide plate which is disposed under the area light detector, and an invisible light source which is disposed at the side of the plane light guide plate. The interactive display device has small size and better appearance, and thus is easy to be transported and more competitive.

Abstract: A touch detection sensing apparatus is disclosed, which comprises: at least one image capturing device, at least one reflection mirror and an image processing circuit. The at least one image capturing device is used to capture an image of a touch object in a detected screen and an image of a virtual image of the touch object in the at least one reflection mirror. The image processing circuit can calculate a position of the touch object based on the image of the touch object and the image of the virtual image of the touch object in a reflection mirror captured by an image capturing device.

Abstract: An image sensor for a touch screen, which is installed at an edge of the touch screen and comprises an image sensing element and an optical imaging system, wherein the optical imaging system comprises: at least two separated lenses to constitute at least two optical paths, wherein each of the lenses includes a concavo-convex lens, an objective lens of each of the lenses is faced to the touch screen, an overlapping area of fields of the view of the objective lenses covers the touch screen, a touch object on the touch screen is imaged by each of the optical paths in the optical imaging system respectively, and the formed image is projected on the image sensing element. The image sensor can locate the touch object by utilizing stereo photography.

Abstract: The present invention discloses a light source for a touch screen. The light source is disposed on the frame of the touch screen, and comprises at least one light-emitting body and at least one light-transmission body, wherein the at least one light-transmission body has light scattering medium evenly distributed therein. This kind of light source is a new type of low cost light source for a touch screen, thus reducing production cost of the touch screen and expanding its application field.

Abstract: A touch detection apparatus is disclosed, which comprises: a frame which defines a planar touch detection region; at least one surface light-emitting body which is disposed on the frame; at least one light source which is placed at the end of the surface light-emitting body; at least one detector which is disposed on the frame and used to detect information of a touch object in the touch detection region; and a processing circuit which is connected to the detector and used to receive information detected by the at least one detector and calculate position information of the touch object based on the received information. In the touch detection apparatus of the present invention, the light source and the surface light-emitting body are disposed on the edges of the frame, thus a good light source can be provided to the touch detection apparatus, and the cost of the entire touch detection apparatus can be reduced due to the low cost of the surface light-emitting body.

Abstract: An apparatus for detecting touch force of an infrared touch screen comprises a plate glass, a sensor, an infrared transmit and receive array, a signal processing circuit, and a micro-controller for controlling the touch screen. Said sensor is a mechanical force sensor, and its signal output port is connected with a input port of the signal processing circuit. An output port of the signal processing circuit is connected with an I/O interface of the micro-controller for control the touch screen.