P‐148: Viewing Angle Switching in Vertical Alignment Liquid Crystal Display by Optimizing Pixel Structure and Controlling LC Orientation

Lim, Young Jin; Jeong, Eun; Kim, Youn Sik; Rhee, John M.; Lee, Gi‐Dong; Lee, Seung Hee

doi:10.1889/1.2785416

Cited by 11 publications

(3 citation statements)

References 7 publications

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“…However, such liquid crystal molecules with 90/270 deg. aligning directions are not always useless/bad for some special applications like privacy protection [9][10]. Usually some metal lines would be placed under the ITO trunk to improve color washout and provide the storage capacitor at the same time.…”

Section: Design Conceptmentioning

confidence: 99%

27‐2: Novel Pixel Design to Improve Color Shift of Multi‐Domain Polymer Sustained Alignment LCD

Tien

Liao²,

Li³

et al. 2019

Symp Digest of Tech Papers

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Section: Design Conceptmentioning

confidence: 99%

27‐2: Novel Pixel Design to Improve Color Shift of Multi‐Domain Polymer Sustained Alignment LCD

Tien

Liao²,

Li³

et al. 2019

Symp Digest of Tech Papers

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“…Other approaches are to realize the viewing angle control function without additional panel by using the pixel division method, in which one pixel is divided into two sub pixels for displaying the main image and controlling viewing angle [23][24][25][26][27][28], or by using three-terminal electrodes to control the gray scale together with viewing angle [29][30][31][32]. However, these methods need additional electronic circuits and electrodes within a pixel, which reduce the aperture ratio and light efficiency.…”

Section: Introductionmentioning

confidence: 99%

Continuous Viewing Angle Distribution Control of Liquid Crystal Displays Using Polarization-Dependent Prism Array Film Stacked on Directional Backlight Unit

Park

Joo

et al. 2016

Journal of the Optical Society of Korea

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We present a polarization-dependent prism array film for controlling the viewing angle distribution of liquid crystal (LC) display panels without loss of light efficiency. On a directional backlight unit, our polarization-dependent prism array film, made into a stacked bilayer with a well-aligned liquid crystalline reactive mesogen (RM) layer on the UV-imprinted prism structure, can continuously control the light refraction function of the prism array by electrically switching incident polarization states of a polarization-controlling layer prepared by a twisted nematic LC mode. The viewing angle control properties of the polarization-dependent prism array film are analyzed under different prism angle and refractive index conditions of the RM layer. A simple analytic model is also presented to describe the intermediate viewing angle distributions with continuously varying applied voltages and incident polarization states.

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“…Under certain environments that personal and/or confidential information needs to be secured when viewed on a display, it is desirable to have the viewing angles be as narrow as possible for the user demand. For dual (narrow and wide) viewing purposes, several methods of achieving switchable viewing angles in liquid crystal displays (LCDs), for example, panel stacking [1][2][3] and pixel dividing techniques, 4,5) in addition to the use of dual backlight units, 6) have been proposed. Among them, the panel stacking approach is widely adopted because of the high optical efficiency and the flexibility in optical design.…”

mentioning

confidence: 99%

Viewing Angle Switchable Liquid Crystal Display with Double Layers Separated by an Interlayer Support

Kim¹,

Hong²,

Cho³

et al. 2009

Jpn. J. Appl. Phys.

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We study moduli stabilization in the context of M-theory on compact manifolds with G 2 holonomy, using superpotentials from flux and membrane instantons, and recent results for the Kähler potential of such models. The existence of minima with negative cosmological constant, stabilizing all moduli, is established. While most of these minima preserve supersymmetry, we also find examples with broken supersymmetry. Supersymmetric vacua with vanishing cosmological constant can also be obtained after a suitable tuning of parameters. JHEP12(2004)018M-theory on (compact) manifolds X of G 2 holonomy leads to non-chiral [42] fourdimensional effective theories with N = 1 supersymmetry [43,44]. Non-abelian gauge groups and matter fields, which may account for the standard model particles, arise when the G 2 space develops singularities [45]-[53]. In this paper we will not consider such possible matter field sectors, but focus on the gravity/moduli part of the theory, which contains b 3 (X) chiral moduli multiplets Φ I . Their real parts parameterize the moduli space of the G 2 manifold, while their imaginary parts corresponds to axions. We are interested in stabilizing these moduli fields Φ I , combining the effects of flux and membrane instantons. The flux superpotential has been computed in refs. [27,44], while the result for the structure of membrane instanton contributions to the superpotential can be found in ref. [54]. The scalar potential of four-dimensional N = 1 supergravity also depends on the Kähler potential for which we rely on the results of ref.[55]. We will be focusing on compact G 2 manifolds constructed by blowing up the singularities of G 2 orbifolds [56]-[58] and [45]. For such G 2 manifolds, the moduli naturally split into two classes, (Φ I ) = (T a , U i ), namely the "bulk" moduli T a associated with the underlying torus and the "blow-up" moduli U i that arise from blowing up the singularities. We will address the stabilization of both types of moduli for realistic models.A practical problem is that there are no simple compact G 2 manifolds with, say, b 3 (X) = 1 available. In particular, the calculation of the Kähler potential in ref. [55] has been carried out for an example with b 3 (X) = 43. We will, therefore, have to deal with a large number of moduli. This task will be approached by starting with relatively simple, but characteristic, toy models and then working our way up to include the full complications of more realistic cases. After setting up the structure of the models in the next section, section 3 discusses the stabilization of the bulk moduli T a , first for a simple universal case, and then including all bulk moduli. Section 4 includes the blow-up moduli U i , again starting with a simple universal toy model and then moving on to include all moduli. Conclusions and further directions are presented in section 5. General structure of four-dimensional effective theoriesIn this section, we will review the structure of four-dimensional N = 1 theories, which originate from M-theory on (compac...

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P‐148: Viewing Angle Switching in Vertical Alignment Liquid Crystal Display by Optimizing Pixel Structure and Controlling LC Orientation

Cited by 11 publications

References 7 publications

27‐2: Novel Pixel Design to Improve Color Shift of Multi‐Domain Polymer Sustained Alignment LCD

27‐2: Novel Pixel Design to Improve Color Shift of Multi‐Domain Polymer Sustained Alignment LCD

Continuous Viewing Angle Distribution Control of Liquid Crystal Displays Using Polarization-Dependent Prism Array Film Stacked on Directional Backlight Unit

Viewing Angle Switchable Liquid Crystal Display with Double Layers Separated by an Interlayer Support

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