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Sensing apparatus and sensing method for sensing touch position on display panel

A sensing device, display panel technology, applied in the input/output process of data processing, instruments, electrical digital data processing, etc., can solve problems affecting the accuracy of input events, etc., to reduce process variation and/or noise coupling Influence and improve the effect of signal-to-noise ratio

Inactive Publication Date: 2012-10-24
INTEGRATED DIGITAL TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Depend on Figure 2A It can be seen that since the process variation is caused by chance cause (random factor) and assignable cause (local factor), the intensity of the photocurrent signal on the display panel presents a distribution with ups and downs, which in turn affects the accuracy of detecting this input event

Method used

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  • Sensing apparatus and sensing method for sensing touch position on display panel
  • Sensing apparatus and sensing method for sensing touch position on display panel
  • Sensing apparatus and sensing method for sensing touch position on display panel

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Embodiment Construction

[0044] In short, the concept of the present invention is to utilize at least two adjacent sensing devices disposed in a display panel to be disposed in the same sensing unit. In the embodiment of the present invention, the sensing unit can be applied to the embedded light sensing touch control, and the touch position can be displayed by sensing the brightness change of the touch position, wherein the at least two adjacent sensing elements respond to the same input event The sensing capability has enough difference. In addition, the sensing signals generated by the at least two adjacent sensing elements in response to the same input event can be output in a differential manner, thereby reducing the detection of the input event. affected by process variation and / or noise coupling. For detailed technical content, please refer to the following description.

[0045] see image 3 , image 3 It is a schematic diagram of an embodiment of a generalized sensing unit of the present in...

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Abstract

A sensing apparatus includes a sensing cell and a processing circuit. The sensing cell is disposed inside a display panel, and includes a first type sensing device and a second type sensing device. The first type sensing device is arranged to generate a first type sensing signal when the sensing cell receives an input event. The second type sensing device is adjacent to the first type sensing device, and arranged to generate a second type sensing signal when the sensing cell receives the input event, wherein a sensing ability of the first type sensing device to detect the input event is different from a sensing ability of the second type sensing device to detect the input event. The processing circuit is arranged to output a sensing output signal corresponding to the sensing cell according to a difference between the first type sensing signal and the second type sensing signal.

Description

technical field [0001] The present invention relates to a sensing unit, in particular to a sensing unit disposed in a display panel that is not easily affected by process variation and noise interference, and a related sensing device and sensing method thereof. Background technique [0002] The in-cell touch technology is to place the photo-sensing device directly on the liquid crystal display panel (LCD panel), which not only reduces the production cost, but also improves the production yield , but also increase the application level. see figure 1 , figure 1 It is a schematic diagram of a partial design of a conventional in-cell photo-sensing system (in-cell photo-sensing system) 100 . A plurality of photo-sensing units (photo-sensing units) PU_1-PU_n respectively include a plurality of photo-sensing devices (photo-sensing devices) PD_1-PD_n, wherein each photo-sensing device is arranged in an array on a display panel (not shown in the figure). When the photo-sensing u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F3/042
CPCG06F3/0412G06F3/042G06F3/0416G06F3/04182G06F3/0418
Inventor 韩承宪袁治明廖胜泰黄乃杰
Owner INTEGRATED DIGITAL TECH