Holographic reflective liquid‐crystal display

Abstract

Abstract— Holographically reflective LCDs are approaching the production phase in Motorola portable products. They add improved performance and product differentiation to TN, STN and FSTN LCDs. Key features include up to two to three times improvement in brightness and contrast and elimination of image degradation due to glare. Without consuming additional power, the hologram provides a “backlit” appearance which further differentiates the product. Moreover, the current version of the holographic reflector has been “tuned” to the LCD so that the effective viewing cone is retained or even expanded slightly.

22.3: Diffuse Renditions of Spatially Pixelated and Temporally Multiplexed H‐PDLCs for Full Color Reflective Displays

“…Simply replacing the backlight with a foil reflector results in a highly specular appearance that is unattractive for most high performance applications. The variety of technologies to create diffuse passive reflections for displays includes microlens arrays [1], microgrooves prepared by a ruling engine [2], lithographically formed surface relief gratings [3], and volume holograms [4]. Our approach is to incorporate the diffuse nature right into the Holographically-formed Polymer Dispersed Liquid Crystal (H-PDLC) medium; in a way that is analogous to the cholesteric liquid crystal displays where the aligning surfaces are used to fracture the planar reflecting texture [5].…”

High Brightness Prism Light-guide Plate for TFT-LCDs Using Optical Simulation and Novel Injection Mold Process

“…4. On based the plan of simulation produced stamper processing Master of Stainless quality, and it embodied actual object through Injection molding using this stamper [4][5][6][7][8]. For complete reappearance of plan, molding product is applied to molding condition that can be formed a shape above 90 percentages in comparison of plan.…”

“…This research does not use the function characteristic optical sheet of high price like prism or the polarized prism and it uses only the diffusion sheet and as the focus parts manufactured the BLU of the high performance, it verifies probability through optical simulation for prism LGP and embodies actual material and focused on certification for reappearance of construct [2][3][4][5].…”

A novel diffractive backlight concept for mobile displays

“…4 Later on, with increasing legibility demands, glare from the display was reduced by directing the specular reflections of the ambient light out of the viewing direction. 5 While these approaches were adequate for monochrome displays, it became apparent with the emergence of color LCDs in mobile phones that a high contrast and good color gamut with an adequate viewing angle was to be required of mobile displays. 6 The focus of development was shifted to adding collimating films in mobile and laptop LCDs to control the propagation of light through the pixel array.…”