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触控面板中感测电容值的调整方法及调整装置

申请公布号:TWI503729

申请号:TW103114345

申请日期:2014.04.21

申请公布日期:2015.10.11

申请人:
世环国际股份有限公司

发明人:戴正杰;黄启斌

分类号:G06F3/044

主分类号:G06F3/044

代理人:赖安国 台北市信义区东兴路37号9楼;王立成 台北市信义区东兴路37号9楼

地址:台北市内湖区基湖路10巷57号4楼之1

主权项:一种触控面板中感测电容值的调整方法,系用于预设定该触控面板之触控感测器内用来感测触控讯号之感测通道的电容值,以产生供该触控面板之控制器于运作时的调整依据,该设定调整方法包含:电容变异量取得步骤,系于该触控面板上之复数个第一方向感测通道及复数个第二方向感测通道中,选取同方向感测通道上之相邻两感测通道,进行无外在触控行为下之该两感测通道间电容值的感测,以取得一电容值变异量;平衡电容值变异的估算步骤,系使用所选取之通道所属的触控感测器,并藉由该触控感测器之复数调整通道上各别连接的调整电容器进行所需电容调整值的估算以产生一调整配置,该调整配置系用于使该触控感测器之各该调整通道上所连接的调整电容器施加至该两感测通道的至少其一,以平衡电容值的变异程度;调整配置表建立步骤,系储存该触控面板内同方向感测通道上之相邻两感测通道所需的各个调整配置以产生一调整配置表,供该触控面板之控制器使用;及一外接调整电容器的设定步骤,系根据一预设基础电容调整值设定每一触控感测器所配置之调整电容器,其中该预设基础电容调整值系为预设的最小可调整值,该外接调整电容器的设定步骤包含:于该预设基础电容调整值大于调整通道电容值的情况下,系依”电容值=(3R-1)N-M,其中R为1至x的正整数,N为该预设基 础电容调整值,M为第R感测通道的调整通道电容值”的规则配置每一触控感测器之该等调整通道中第x个调整通道对应连接的调整电容器。

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