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Optical sensor touch screen based on multi-dimensional electric field mode and preparation method thereof

A multi-dimensional electric field, sensing technology, applied in optics, nonlinear optics, electrical digital data processing, etc., to achieve the effect of reducing production costs

Inactive Publication Date: 2016-04-13
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And also do not adopt the design of the optical sensing type touch screen of ADS mode in the prior art

Method used

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  • Optical sensor touch screen based on multi-dimensional electric field mode and preparation method thereof
  • Optical sensor touch screen based on multi-dimensional electric field mode and preparation method thereof
  • Optical sensor touch screen based on multi-dimensional electric field mode and preparation method thereof

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Embodiment Construction

[0020] The specific implementation of the ADS mode-based optical sensor touch screen provided by the embodiments of the present invention and the manufacturing method thereof will be described in detail below with reference to the accompanying drawings.

[0021] The film thicknesses and area sizes and shapes of the various layers in the drawings do not reflect the true proportions of the array substrate, but are only intended to schematically illustrate the content of the present invention.

[0022] An optical sensing touch screen based on the ADS mode provided by the embodiment of the present invention is redesigned and optimized on the existing ADS mode liquid crystal display panel, and an optical sensing unit and a sensing unit for touch sensing are added. Signal lines, this design is suitable for larger size display panels. The specific structure thereof will be described in detail below.

[0023] The optical sensor type touch screen based on ADS mode that the embodiment ...

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Abstract

The invention discloses an optical sensing type touch screen based on a multi-dimensional electric field mode and a preparation method of the optical sensing type touch screen. The preparation method comprises the following steps: adding a sensing signal line beside at least one data signal line of a TFT (Thin Film Transistor) array substrate; setting at least one public electrode line as a sensing control line; and setting optical sensing units at the overlapping part of the sensing signal line and the sensing control line, wherein each optical sensing unit converts the light intensity radiating on the optical sensing unit into voltage signals to be output through the sensing signal line when electric signals are synchronously transmitted through the sensing control line and a grid signal line. The sensing signal line is arranged at one side of the data signal line, the optical sensing unit is arranged at the overlapping part of the sensing control line and the sensing signal line, and the sensing signal line and the optical sensing unit are both arranged at a non-display area of a pixel unit, so that the aperture opening ratio is not reduced; and moreover the optical sensing unit is prepared when pixel units of a liquid crystal panel are prepared without adding new process steps, so that the manufacturing cost of the touch screen is also reduced.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an optical sensing touch screen based on a multidimensional electric field mode and a preparation method thereof. Background technique [0002] With the rapid development of display technology, touch screens (TouchScreenPanel) have gradually spread throughout people's lives. At present, touch screens can be divided into resistive, capacitive, infrared, surface acoustic wave, electromagnetic, vibration induction, and frustrated total internal reflection optical induction according to their working principles. According to the composition and structure, the touch screen can be divided into: touch sensor plug-in type (double layer), touch sensor on the coverage surface (single layer), touch sensor on the panel, and touch sensor inside the panel. Among them, the structure of the touch sensor inside the panel can not only reduce the overall thickness of the touch screen, but also gr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/042G02F1/1333G02F1/1362
Inventor 胡明徐宇博林炳仟
Owner BOE TECH GRP CO LTD
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