Optical touch panel, optical touch display and optical touch display device
A technology of optical touch and display screen, applied in the fields of instruments, computing, electrical digital data processing, etc., can solve the problems of low touch resolution and sensitivity, inaccurate judgment of infrared light spots, and light intensity of detectors, etc. Improve the resolution and sensitivity of light touch, and improve the effect of light touch performance
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Embodiment 1
[0031] This embodiment provides an optical touch panel, such as figure 1 As shown, it includes a substrate 1 and a photosensitive element 2 disposed on the substrate 1. The photosensitive element 2 is used to convert infrared touch light irradiated thereon into a current signal, so as to judge the touch position of the infrared touch light according to the current signal.
[0032] Wherein, the photosensitive element 2 is a hydrogenated nano-silicon thin film, and the photosensitive element 2 is used for sensing infrared touch light and converting the infrared touch light into a current signal. Hydrogenated nano-silicon film is a silicon nano-film formed by embedding nano-sized silicon grains (also called microcrystalline silicon) in a hydrogenated amorphous silicon (a-Si:H) network by chemical vapor deposition or sputtering. Compared with hydrogenated amorphous silicon, hydrogenated nano-silicon has higher carrier mobility, that is, hydrogenated nano-silicon has good electrica...
Embodiment 2
[0039] This embodiment provides an optical touch display screen, such as image 3 with Figure 4 As shown, a display panel 4 is included, and the optical touch panel 5 in Embodiment 1 is arranged on the light emitting side of the display panel 4 .
[0040] In this embodiment, a plurality of pixels 6 are arranged on the display panel 4, and the plurality of pixels 6 are uniformly distributed in a matrix, and each pixel 6 includes a red sub-pixel 61, a green sub-pixel 62 and a blue sub-pixel 63, and the red sub-pixel The pixels 61 , green sub-pixels 62 and blue sub-pixels 63 are arranged along the row direction of the pixels 6 , and the red sub-pixels 61 , green sub-pixels 62 and blue sub-pixels 63 have the same shape and size.
[0041] In this embodiment, the photosensitive element 2 in the optical touch panel 5 is correspondingly located between any two adjacent pixels 6 in each row of pixels 6 , and the shape and size of the photosensitive element 2 is the same as that of th...
Embodiment 3
[0045] This embodiment provides an optical touch display screen, which is different from Embodiment 2, as Figure 5 As shown, the photosensitive element 2 in the optical touch panel is correspondingly located between any two adjacent pixels 6 in the rows of pixels separated from each other by one or more rows in sequence, and the shape and size of the photosensitive element 2 are the same as the red sub-pixel 61 .
[0046] Compared with Embodiment 2, the distribution density of photosensitive elements 2 in the corresponding display panel area in this embodiment is relatively reduced, but this is also enough to achieve a good optical touch control on the optical touch display screen, because in practical applications, light The number of photosensitive elements 2 in the touch panel is not necessarily equal to the number of pixels 6 on the display panel.
[0047] Compared with the arrangement of the photosensitive element 2 in the prior art, the arrangement of the photosensitive...
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