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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
21

The study of optical characteristic by different alignment condition in the reflective Guest Host liquid crystal display

Chang, Yan-zhi 25 January 2008 (has links)
The Guest Host Mode of LCD is doped the dichroic dyes in liquid crystal and it have anisotropic absorbefacient. This operation mode can produce dark or brightness to achieve display target by the electric field and this can operate in the non-polarizer type to achieve high reflectance. Because of market requirement in the e-paper display, so the reflective LCD by the guest host mode is a focal once again. In this study, we will doped the black dichroic dyes in liquid crystal and than we fill into the homogenous alignment cell by difference rubbing direction and homeotropic alignment cell to investigate the optical-electric characteristic in the non-polarizer and polarizer type, because in the difference alignment condition can influence the behavior of dichroic dyes, and we fabricate the double cell to improve the optical-electric characteristic. The reflective type guest host display still have many research space, like dope the dichroic dye in PDLC(polymer dispread liquid crystals) or cholesteric liquid crystal to achieve flexible and bistable characteristic.
22

The Research of Vertical Integration in Taiwan TFT-LCD Industry.

Ma, Chun-Fang 19 June 2008 (has links)
TFT-LCD industry had been developed rapidly in Taiwan. Our value of output in FDP field was became the world first in 2007,it was one of the most important industry that drive economic advancement in our country. In order to keep the competition in TFT-LCD industry,to produce the relative components and material locally is the must way in the future.And many manufacturers strengthen their relationships with the component suppliers positively to reduce the production cost and enhance their ability of vertical integration. The purpose of this research is to study the benefit of vertical integration in TFT-LCD industry.We discuss the definition,types,the motive and benefit in the part of theory and use it as the foundation of case study.In the part of case study,we took CMO as our object to study the vertical integration relationship between the vendors in supply chain. By collecting the secondary material and case interview to get the information to analyze the present situation and the future tendency of vertical integration in CMO. We generalize some conclusions as follows. 1.Cost is the key factor of vertical integration in TFT-LCD industry. 2.Technique independence is the key factor of vertical integration in TFT-LCD industry. 3.Stable supply is key factor of vertical integration in TFT-LCD industry. 4.Special area of TFT-LCD industry could strengthen the benefit of vertical integration.
23

Rozhraní mezi LCD maticovým a grafickým displejem / Interface Between Matrix and Graphic LCD

Hartmann, Lukáš January 2019 (has links)
This work describes design interface between matrix with controller HD44780 and graphic LCD. This device replace 2x20, 4x20, 4x40 character display. Character which should be displayed are send through a parallel interface, such as matrix display, or send through SPI bus. Communication line RS-485 are used for set language character set. Language character sets are saved into external flash memory.
24

Návrh zobecněného LCD řadiče / Design of a Generic LCD Driver

Hornung, Tomáš January 2009 (has links)
The master thesis deals with controlling and function principles of LCDs. Various LCD types are described, as well as means of control and generic description of LCD controller function blocks. They are implemented in VHDL language, simulation and simulation results are realized using FITkit platform.
25

Panel uživatelského rozhraní s dotykovým grafickým LCD / User Interface Panel with graphic LCD with touchscreen

Plass, Petr January 2011 (has links)
The Master`s thesis gives the basic facts about realisation of HMI. It will measure and display the electric quantity of electric traction of the Marabu experimental aircraft. The HMI is possible to use for other difficult applications. The main part of the thesis is overviewed the graphic function library for LCD.
26

Grafická knihovna pro dotykový LCD / Graphics Library for Touchscreen LCD

Klubal, Ondřej January 2012 (has links)
This work deals with description of graphic library for a touch screen educational kit with a microcontroller from Freescale. Part of this library is a driver that accelerates gradient rendering and supports reading from video RAM. The library allows inserting images with transparency and their upscaling. Multiple fonts are also supported. Fonts can be upscaled and their weight can be set.
27

TFT-LCD公司籌資決策探討

陳恆真, Chen, Jane Unknown Date (has links)
·未來產業的趨勢在資源有限的情形下,必會出現資金排擠在全球大者恆大的排擠效應下,中小型面板廠未來的籌資之路將更加窄化,而失去競爭力。 ·業者應妥善運用籌資時機及運用各項融資工具:(1)在產業景氣佳股價熱絡時,以發行權益資本融資。(2)在產業景氣差股價表現差時,以溢價發行可轉換公司債融資。(3)在利率低廉公司財務結構佳時,以聯貸案取得所需資金。 ·對於TFT-LCD公司而言, 發行海外存託憑證是最佳的資本市場籌資選擇,由於海外存託憑證的發行價格更貼近市價,故名目籌資成本雖高,公司反而可以相同的發行股數取得更多的資金。且有利於企業全球布局及提高公司或品牌的全球知名度。
28

Estudio y optimización del almacenamiento de información en una memoria holográfica

Fernandez-Varo, Helena 12 December 2008 (has links)
No description available.
29

Synchronized Clock

Andersson, Göran January 2007 (has links)
<p>For this project I was planning to construct a clock that could be synchronized with an external source. The clock should be able to keep the time between synchronizations as these may be sparse. It also needed to be able to store the current time in a memory and keep a register of stored times. The current time and the register must be viewable by the user and the clock must also have the ability to count down the last five seconds prior to a minute selected by the user. I have performed this work at home with my own equipments.</p><p>As an external source for the synchronization I have chosen the DCF-77 clock signal broadcasted from Germany. To receive this signal I used a cheap AM receiver built specifically for this purpose. For the actual clock I used a PIC microcontroller which I programmed in C. The chip had all I needed including an oscillator and a RAM memory. I also connected a 3x16 character LCD display to the clock as well as 4 1-pole buttons for the user interface.</p><p>The program is built upon an interrupt routine that with help of an internal timer is set to execute once every hundreds of a second. During this interrupt routine all other functions are executed. These functions include a DCF decoder, an internal clock to keep the time, an LCD driver and a user interface.</p><p>I have managed to read the clock signal from the receiver but due to interferences from the computer I used to program the PIC chip, I have not been able to get any good reception close to the computer. Apart from this setback the clock works as it should and it meets all other criteria.</p>
30

An Analytic Study on the Value Chain Integration and Investment Model for TFT-LCD Industry

Chen, Ching-Chien 22 August 2011 (has links)
This thesis presented an empirical study exploring the performance of TFT-LCD industry through vertical integration in value chain. Statistical analysis methods were adopted to examine the performance of TFT-LCD industry. The following theories of the profit pool and DuPont financial analysis approach, supplemented by competitive strategies, vertical integration, value chain and profit pool theory literature, from the industry overview and key aspects of the value chain Profit distribution and changes in the degree of value chain integration impact on the profitability of panel makers. In this research, we focused on the different segment of the TFT-LCD value chain (color filters, polarizers, backlight module, driver IC and panel manufacturing). We used three financial performance indices of these companies between 2005 and 2009,namely ROE (Return on Equity; ROE), return on total assets (Return on Asset; ROA), operating margin (Return on Sales; ROS) such as most scholars commonly used financial indicators as measurement tools observe all aspects of the value chain profit changes. Finally from the perspective of profit pool and vertical integration strategies to examine whether TFT-LCD panel manufacturers could use an integration strategy as a way to improve their performance on operating profit margin and lower the risk. The results are as follows: the value of different levels of vertical integration, panel makers will do the performance of the operating profit margin have different effects, with the active dwell Taiwan¡¦s TFT-LCD industry up the value chain integration, is indeed closer to or exceed the Korea TFT-LCD maker, but with the TV panel sales with a gradual increase in the proportion of the panel sales , sales channel became a key factor in whether or not profitable. Therefore, the panel makers may be able to consider more closer cooperation with the player of home appliance industry and downstream continuing down the value chain to make the direction of integration efforts.

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