Rear projection type touch display screen and projection system
A technology of touch display and rear projection, which is applied in the field of projection display and can solve problems such as difficulty in popularizing large-size touch display devices
Pending Publication Date: 2022-05-17
FORMOVIE (CHONGQING) INNOVATIVE TECH CO LTD
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Problems solved by technology
[0005] In order to solve the defect that existing touch display screen implementation schemes are difficult to popularize to large-size touch display devices, the present invention provides a rear-projection touch display screen and a projection system
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[0035] The following examples are further explanations and supplements to the present invention, and do not constitute any limitation to the present invention.
[0036] A rear-projection-based touch display screen according to an embodiment of the present invention will be described below with reference to the accompanying drawings.
[0037] refer to figure 1 As shown, the present invention provides a rear-projection touch display screen, including a projection layer 10, a touch layer 20, a substrate layer 30 and a display layer 40 that are sequentially stacked;
[0038] The substrate layer 30 is used to support the projection layer 10, the touch layer 20 and the display layer 40;
[0039] The projection layer 10 includes a layer of diffusion particles 101 and a first microprism layer 102 arranged in layers, and the first microprism layer 102 is arranged between the diffusion particle layer 101 and the touch layer 20; the diffusion particle layer 101 is used to receive proje...
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The invention relates to a rear projection type touch display screen and a projection system, and belongs to the technical field of projection display. The rear projection type touch display screen comprises a projection layer, a touch layer, a substrate layer and a display layer which are sequentially stacked, and the substrate layer is used for supporting the projection layer, the touch layer and the display layer; the projection layer comprises a diffusion particle layer and a first microprism layer which are stacked, and the first microprism layer is arranged between the diffusion particle layer and the touch layer; the diffusion particle layer is used for receiving light rays projected by the back projection equipment and performing diffusion treatment on the received light rays; the first microprism layer is used for converging the light passing through the diffusion particle layer; the touch control layer is used for collecting a touch signal and transmitting the light received by the projection layer to the substrate layer; the display layer comprises a particle condensation layer, and the particle condensation layer is used for converging light passing through the substrate layer. According to the invention, the touch display screen can be thinned and frameless, and is suitable for large-size touch display equipment.
Description
technical field [0001] The invention relates to the technical field of projection display, in particular to a rear projection touch display screen and a projection system. Background technique [0002] At present, commercial displays and educational large screens on the market are basically complete machines based on TFT-LCD (Thin Film Transistor Liquid Crystal Display) modules that add touch functions. [0003] In related technologies, the touch function realized based on the capacitive touch screen solution needs to be fully bonded to the TFT-LCD liquid crystal glass, but is limited by screen size and bonding yield, which leads to high cost and is difficult to be widely used in large-size touch screens. control display device. In the infrared touch solution, since the infrared touch screen needs to have grooves, and infrared light strips need to be installed on the four sides of the screen (infrared emitting tubes and infrared receiving tubes are arranged on the four side...
Claims
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IPC IPC(8): G03B21/60G02B5/02G06F3/041
CPCG03B21/60G06F3/0412G02B5/0231
Inventor 罗伟信江浩李飞
Owner FORMOVIE (CHONGQING) INNOVATIVE TECH CO LTD