本文關(guān)鍵詞： 電容觸摸屏 納米銀 導(dǎo)電微網(wǎng)格 邊緣強(qiáng)化 透明導(dǎo)電膜　出處：《華南理工大學(xué)》2015年博士論文　論文類型：學(xué)位論文

【摘要】：近幾年,隨著iphone系列新型電子產(chǎn)品的不斷強(qiáng)勢(shì)推出,其所采用的投射式電容觸摸屏也成為了智能手機(jī)、平板電腦等電子產(chǎn)品的最主要輸入工具及標(biāo)配裝置,極大地推動(dòng)人機(jī)界面電容觸控技術(shù)的發(fā)展。同時(shí),對(duì)觸摸屏在輕薄化、大尺寸化、高靈敏度、堅(jiān)固化等方面的要求也越來越高。把觸控感應(yīng)層和玻璃蓋板整合為一體的整合式新型投射式電容觸摸屏是產(chǎn)業(yè)界的一個(gè)研究熱點(diǎn)。針對(duì)整合式大尺寸電容觸摸屏靈敏度問題,對(duì)多種透明導(dǎo)電膜材料的分析對(duì)比,在玻璃基板上直接采用凹槽填充式的納米金屬導(dǎo)電微網(wǎng)格來制備高導(dǎo)電率和高透過率的透明導(dǎo)電膜,可較大提高觸摸靈敏度及光透過率。同時(shí),通過優(yōu)化納米/微米銀漿的配比,分別采用蝕刻法、壓印法和顯影法在玻璃基板上直接制作了納米金屬導(dǎo)電微網(wǎng)格,得到優(yōu)化的工藝方法。實(shí)驗(yàn)結(jié)果表明:顯影法能夠在玻璃基板上形成良好的網(wǎng)狀凹槽,再通過填充適當(dāng)?shù)募{米/微米顆粒銀漿,可獲得高導(dǎo)電性與高透光率的微網(wǎng)格。進(jìn)一步在微網(wǎng)格上加入黑色層和平坦層,將其制作為雙層結(jié)構(gòu),并在網(wǎng)格上采用抗摩爾紋的傾斜設(shè)計(jì)和無序設(shè)計(jì),可提高納米金屬導(dǎo)電微網(wǎng)格與整合式結(jié)構(gòu)電容觸摸屏的兼容性。論文針對(duì)整合型電容觸摸屏的堅(jiān)固性問題,進(jìn)行觸摸屏的邊緣強(qiáng)化研究。采用氟化銨代替氫氟酸作為主要的強(qiáng)化蝕刻藥液成分,研究開發(fā)了一個(gè)采用非氫氟酸鹽溶液實(shí)現(xiàn)觸摸屏邊緣拋光的強(qiáng)化新工藝。通過對(duì)拋光樣品進(jìn)行4PB彎曲強(qiáng)度的測(cè)試表明,新工藝可明顯地改善觸摸屏的邊緣強(qiáng)度,同時(shí)避免了邊緣拋光過程對(duì)觸控感應(yīng)層的破壞,有效地提高整合型電容觸摸屏的堅(jiān)固性及產(chǎn)品的可靠性。綜合上述納米金屬導(dǎo)電微網(wǎng)格的制作方法及邊緣強(qiáng)化的新工藝,研制作了相應(yīng)的電容觸摸屏,結(jié)果表明:所制作的觸摸屏能夠?qū)崿F(xiàn)高靈敏度觸控功能,具有較高的堅(jiān)固性,其透射率高于91.8%,反射率低于5.5%,且不產(chǎn)生電極反射光,在強(qiáng)光環(huán)境具有良好的可讀性。
[Abstract]:In recent years, with the introduction of the new iphone series of electronic products, its projective capacitive touch screen has become a smart phone. The most important input tools and standard devices of electronic products such as tablet computer greatly promote the development of man-machine interface capacitive touch technology. At the same time, the touch screen is thin, large size and high sensitivity. The new integrated projective capacitive touch screen which integrates the touch sensing layer and the glass cover plate is a research hotspot in the industry. The integrated large size capacitive touch screen is a hot spot in the industry. Sensitivity. Through the analysis and comparison of various transparent conductive film materials, the transparent conductive film with high conductivity and high transmittance was prepared directly on the glass substrate using groove-filled nanometallic conductive microgrids. At the same time, by optimizing the ratio of nano / micron silver paste, the nano metal conductive microgrids were fabricated on glass substrate by etching, imprint and development respectively. The experimental results show that the development method can form a good mesh groove on the glass substrate and then fill the appropriate nano / micron silver paste. The black layer and flat layer are added to the microgrid to make it into a double-layer structure, and the anti-mollification tilting design and disordered design are adopted on the grid. It can improve the compatibility between nano-metal conductive microgrid and integrated capacitive touch screen. Using ammonium fluoride instead of hydrofluoric acid as the main composition of enhanced etching solution. A new strengthening process for edge polishing of touch screen using non-hydrofluorate solution was developed. The bending strength of the polished sample was measured by 4PB. The new process can obviously improve the edge strength of the touch screen and avoid the damage of the touch sensing layer caused by the edge polishing process. The robustness of the integrated capacitive touch screen and the reliability of the product are improved effectively. The corresponding capacitive touch screen is developed by synthesizing the fabrication method of the nano-metal conductive microgrid and the new technology of edge strengthening. The results show that the touch screen can achieve high sensitivity touch control function, has a high robustness, its transmittance is higher than 91.8, the reflectivity is lower than 5.5, and the electrode does not reflect light. In strong light environment has good readability.
【學(xué)位授予單位】：華南理工大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN873

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