An Optimization Method of Finger Model

An optimization method and finger technology, applied in the field of finger model simulation, can solve problems such as inability to simulate the overall 3D structure and excessive calculation

Active Publication Date: 2020-04-07
北京华大九天科技股份有限公司
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  • Abstract
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Problems solved by technology

InCell TP structure, due to the addition of pixel unit structure, its calculation is too large to directly simulate the overall three-dimensional structure

Method used

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  • An Optimization Method of Finger Model
  • An Optimization Method of Finger Model
  • An Optimization Method of Finger Model

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Embodiment Construction

[0029] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0030] The method for optimizing the finger model of the present invention is based on the cylindrical structure of the finger model. For the InCell TP layout, considering the repeatability of the pixel layout, the circle of the finger is optimized. In this embodiment, it is assumed that the size of the pixel unit is 50um×150um, and the size of the finger is a circle with a diameter of 5000um. Here, the width of the pixel grid is defined as PixelW, and the height is PixelH.

[0031] figure 1 For the optimization method flow chart of finger model according to the present invention, reference will be made below figure 1 , the method for optimizing the finger model o...

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Abstract

An optimization method of a finger model comprises the following steps: establishing an integral pixel grid according to a pixel array; Calculating a first grid set completely covered by the circularfinger according to the pixel grids; Calculating a second grid set where the circular edge of the finger intersects with the pixel grid; Deleting non-overlapped pixel grids in a grid set where the circular edge of the finger intersects with the pixel grids to obtain a third grid set; And combining the first grid set and the third grid set to obtain a new finger graph. According to the finger modeloptimization method, the calculation amount of capacitance simulation is effectively reduced under the condition that the overall area of the finger and the calculation precision of the capacitance are kept unchanged.

Description

technical field [0001] The invention relates to the technical field of integrated circuit design, in particular to a finger model simulation for touch screen design. Background technique [0002] In panel design, touch screen (Touch Panel, TP for short) design requires efficient and accurate capacitance simulation. The capacitance simulation of TP needs to simulate the capacitance of the model with fingers and the model without fingers respectively, and then measure the pros and cons of TP design according to the change of capacitance in these two cases. Capacitance simulation is generally performed by means of a three-dimensional field solver. The calculation amount is usually very large, and it is directly related to the complexity of the simulated structure. With the development of panel technology, more and more InCell TP designs are adopted. InCell TP has a process and a pixel unit together, so the capacitance simulation process needs to add a pixel unit structure, wh...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F3/041G06F3/044
Inventor 李相启陆涛涛
Owner 北京华大九天科技股份有限公司
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