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[Lecture Notes in Computer Science] Pattern Recognition and Computer Vision Volume 11259 (First Chinese Conference, PRCV 2018, Guangzhou, China, November 23-26, 2018, Proceedings, Part IV) || Conductive Particles Detection in the TFT-LCD Manufacturing Process with U-ResNet
摘要： The inspection of conductive particles after Anisotropic Conductive Film (ACF) bonding is a common and crucial step in the TFT-LCD manufacturing process since quality of conductive particles is an indicator of ACF bonding quality. Manual inspection under microscope is a time consuming and tedious work. There is a demand in industry for automatic conductive particle inspection system. The challenge of automatic conductive particle quality inspection is the complex background noise and diversified particle appearance, including shape, size, clustering and overlapping etc. As a result, there lacks effective automatic detection method to handle all the complex particle patterns. In this paper, we propose a U-shaped deep residual neural network (U-ResNet), which can learn features of particle from massive labeled data. The experimental results show that the proposed method achieves high accuracy and recall rate, which exceedingly outperforms the previous work.
关键词： Deep convolutional network,Conductive particles,TFT-LCD,U-ResNet
更新于2025-09-23 15:21:01
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Business Ecosystem and Technology Roadmap in Taiwan’s TFT-LCD Industry
摘要： During the past decade, Taiwan, a reliable source of quality 12-inch wafer manufacturing, grew to become the largest supplier of TFT-LCD panels in the world. The financial crisis in 2008 and increasing competition from other Asian manufacturers shortly after, led to the current scenario, which is characterized by global oversupply, demand fluctuations, and price volatility. As a result, in 2012 several firms attempted to form alliance strategies in support of Taiwan’s TFT-LCD industry. This paper proposes the Grand Alliance in Taiwan’s TFT-LCD and describes three methods to analyze the current strengths, limitations, and future potential of the Grand Alliance: an Industry Value Chain (Porter 1985), a Dynamic Five Forces framework (Porter 1980), and a Business Ecosystem (Moore 1993). The results suggest that developing a business ecosystem lifecycle could obtain an appropriate technology roadmap for Taiwan’s TFT-LCD industry. The study provides useful observations and directions for management and business coalitions involved in drafting and executing globally competitive strategies.
关键词： five forces,Industry analysis,TFT-LCD industry,technology roadmap,business ecosystem
更新于2025-09-19 17:15:36
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Preparation and Characterization of Semi-Alicyclic Polyimide Resins and the Derived Alignment Layers for Liquid Crystal Display Technology
摘要： Uniform alignment of rigid-rod liquid crystal (LC) molecules under applied voltage is critical for achievement of high-quality display for thin-film transistor-driven liquid crystal display devices (TFT-LCDs). The polymeric components that can induce the alignment of randomly aligned LC molecules are called alignment layers (ALs). In the current work, a series of organo-soluble polyimide (SPI) ALs were designed and prepared from an alicyclic dianhydride, hydrogenated 3,3',4,4'-biphenyltetracarboxylic dianhydride (HBPDA), and various aromatic diamines, including 4,4'-methylenedianiline (MDA) for SPI-1, 4,4',5,5'-aminodianiline (NDA) for SPI-2, 3,3',5,5'-tetramethyl-4,4'-diaminodiphenylmethane (TMMDA) for SPI-3, and 3,3',5,5'-diethyl-4,4'-diaminodiphenylmethane (DMDEDA) for SPI-4. The derived SPI resins were all soluble in N-methyl-2-pyrrolidone (NMP). Four SPI alignment agents with the solid content of 6 wt.% were prepared by dissolving the SPI resins in the mixed solvent of NMP and butyl cellulose (BC) (NMP/BC = 80:20, weight ratio). Liquid crystal minicells were successfully fabricated using the developed SPI varnishes as the LC molecule alignment components. The SPI ALs showed good alignment ability for the LC molecules with the pretilt angles in the range of 1.58°–1.97°. The LC minicells exhibited good optoelectronic characteristics with voltage holding ratio (VHR) values higher than 96%. The good alignment ability of the SPI ALs is mainly attributed to the good comprehensive properties of the SPI layers, including high volume resistivity, high degree of imidization at the processing temperature (230 °C), good rubbing resistance, good thermal stability with glass transition temperatures (Tgs) higher than 260 °C, and excellent optical transparency with the transmittance higher than 97% at the wavelength of 550 nm.
关键词： alignment layer,semi-alicyclic polyimide,thin-film transistor-driven liquid crystal display device (TFT-LCD),residual direct circuit voltage,voltage holding ratio
更新于2025-09-19 17:13:59
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Exploring Industrial Knowledge Flow for Identifying Technological Development Strategy: The Case of Koreaa??s TFT-LCD Industry
摘要： Korea’s technological achievement in the thin film transistor liquid crystal display (TFT-LCD) industry became possible primarily through a catch-up strategy in technological development. Through qualitative and quantitative analyses of the Korean TFT-LCD industry’s knowledge management, the researchers highlight the strategies that key Korean firms utilized to enable a successful technological catch-up. On a national level, patent citation information is analyzed to evaluate the Korean industry’s technological knowledge position compared to other Asian countries. Results from this analysis indicate that Korea plays a central role within the knowledge network, as evidenced by the highest centrality value. On a firm level, Samsung and LG Display are investigated in the areas of technological development and manufacturing strategies. Samsung and LG Display show strength in the technological specialization of devices’ arrangements/optical operation and arrangement/circuits of control indicating devices. In addition, these two firms show more diversification to allow for new business opportunities. By integrating quantitative and qualitative methods to analyze the TFT-LCD industry on national and firm levels, this research demonstrates the industry’s trajectory with depth and precision. In addition, this study contributes a meaningful strengthening of analysis methods in technological knowledge management and provides successful management factors for new latecomers in the industry.
关键词： patent citation analysis,technological specialization,technological diversification,TFT-LCD industry
更新于2025-09-16 10:30:52
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8.3: <i>Invited Paper:</i> Ultra High Resolution Display for Digital Holography
摘要： Ultra high resolution display panels are one of the technical trends for future display and essential for the realization of digital hologram. Two approaches for the development toward 1um pixel pitch are introduced. SLM panel with 3μm pixel pitch based on reflected TFT-LCD was fabricated. Reconstructed hologram images were successfully demonstrated. SLM based on phase change materials was under development. In this case the driving circuitry was consist of Si CMOS backplane. Due to the scalability of PCM materials, accomplishment of pixel pitch with 1μm is very promising.
关键词： TFT-LCD,Spatial Light Modulator,Ultra high resolution,Holography,Phase modulation,Active-matrix displays,TFTs,Phase Change Materials
更新于2025-09-12 10:27:22
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Effectiveness of Light Source on Detecting Thin Film Transistor
摘要： Light sources tend to affect images captured in any automatic optical inspection (AOI) system. In this study, the effectiveness of metal-halide lamps, quartz-halogen lamps, and LEDs as the light sources in AOI systems for the detection of the third and fourth layers electrodes of thin-?lm-transistor liquid crystal displays (TFT-LCDs) is examined experimentally. The results show that the performance of LEDs is generally comparable or better than that of metal-halide and quartz-halogen lamps. The best optical performance is by the blue LED due to its spectrum compatibility with the time-delay-integration charged-coupled device (TDI CCD) sensor and its better spatial resolution. The images revealed by the blue LED are sharper and more distinctive. Since current LEDs are more energy ef?cient and environmentally friendly, using LEDs as the light source for AOI is very bene?cial. As the blue LED performs the best, it should be adopted for AOI using TDI CCD sensors.
关键词： TFT-LCD,blue LED,spectrum,quartz-halogen lamp,metal-halide lamp
更新于2025-09-10 09:29:36