Sunlight readable transflective liquid crystal displays, used on devices from cell phones and portable media players, to GPS and even some desktop monitors, have become indispensable in our day-to-day lives.Transflective Liquid Crystal Displays is a methodical examination of this display technology, providing a useful reference to the fundamentals of the topic. Including thorough descriptions of the essential physics of transflective LCD technologies, the book also compares transflective LCD technology with alternatives, such as OLED displays, to enable display engineers to appropriately select the correct device for their particular application.Includes detailed descriptions of both pure transmissive and reflective LCDs, and the design considerations and performance of combining these into small mobile displays. Focuses on fundamental elements, such as double cell gap transflective LCDs, wide-viewing angle technology, light polarization and wide-view linear and circular polarizers, video rate display by colour sequential technologies, colour sciences and engineering, and backlights. Describes the latest LCD technologies, such as polymer-sustained surface alignment technology, and the possible trends which could be applied to transflective LCDs in the future. Its focus on the fundamentals of transflective liquid crystal displays makes this an ideal graduate text, while display engineers, scientists, developers and technicians working with this technology will also welcome this resource.
Author(s): Zhibing Ge, Shin-Tson Wu
Edition: 1
Year: 2010
Language: English
Pages: 246
Tags: Приборостроение;Твердотельная электроника;
Transflective Liquid Crystal Displays......Page 2
Contents......Page 8
Series Editor’s Foreword......Page 12
About the Authors......Page 14
Preface......Page 16
1.1 Overview......Page 20
1.2.1 Linear Polarizers......Page 25
1.2.2 Circular Polarizers......Page 27
1.3.1 Twisted Nematic (TN) Mode......Page 32
1.3.2 Homogeneous Alignment Mode......Page 38
1.3.3 In-plane Switching (IPS) Mode......Page 39
1.3.4 Vertical Alignment (VA) Mode......Page 45
1.3.5 Hybrid Aligned Nematic (HAN) Mode......Page 47
1.3.6 Pi-cell or Optically Compensated Bend (OCB) Alignment Mode......Page 48
1.4.1 Deviation of Effective Polarizer Angle......Page 50
1.4.2 Phase Retardation from Uniaxial Medium......Page 52
1.4.3 Uniaxial and Biaxial Films......Page 54
1.5.1 Parallax and Ambient Contrast Ratio......Page 56
1.5.2 Reflector Designs......Page 59
1.6.1 Backlight Configuration......Page 62
1.6.2 CCFL and LED Light Sources......Page 63
1.6.3 Other Backlight Elements and Films......Page 67
References......Page 73
2.1 Overview......Page 78
2.2.1 Free Energy of Liquid Crystal Devices......Page 79
2.2.2 LC Simulation Flow Chart......Page 83
2.3.1 4 x 4 Matrix Method......Page 88
2.3.2 2 x 2 Extended Jones Matrix Method......Page 94
2.3.3 Numerical Examples......Page 96
2.4.1 Transflective LCDs Using Dual Cell Gaps......Page 101
2.4.2 Transflective LCDs Using Dual Gamma Curves......Page 106
2.4.3 Transflective LCDs Using Dual Electric Fields......Page 108
2.4.4 Transflective LCDs Using Dual Alignment......Page 115
2.5 Summary......Page 119
Appendix 2.A......Page 120
References......Page 123
3.1 Poincar e Sphere for Light Polarization in LCDs......Page 128
3.2.1 Deviation of the Effective Angle of Crossed Linear Polarizers......Page 131
3.2.2 Compensation of Linear Polarizers using Uniaxial Films......Page 132
3.2.3 Compensation of Linear Polarizers using Biaxial Films......Page 136
3.3.1 Broadband and Wide-view Circular Polarizers......Page 141
3.3.2 Narrow-band and Wide-view Circular Polarizers......Page 151
3.4 Summary......Page 162
References......Page 163
4.1 Overview......Page 166
4.2.1 MVA Technology Overview......Page 167
4.2.2 Mobile MVA Technology......Page 174
4.3.1 IPS and FFS Technology Overview......Page 176
4.3.2 Transflective IPS and FFS Technology......Page 185
4.4 Summary......Page 200
References......Page 201
5.1 Overview......Page 208
5.2 Color Sequential Driving Schemes......Page 209
5.3.1 Thin Cells with High Birefringence LC Material......Page 212
5.3.2 Bend Cells......Page 213
5.4.1 Conventional Transflective LCDs Using OCB Modes......Page 218
5.4.2 Color Sequential Transflective LCDs......Page 222
5.5 Summary......Page 227
References......Page 228
6.1 Unique Role of Transflective LCDs......Page 232
6.2 Emerging Touch Panel Technology......Page 237
6.3 Summary......Page 243
References......Page 244
Index......Page 246
