Himax Display, Inc.

Himax Technologies, Inc.

The Hong Kong University of Science and Technology

Yuet-Wing Li

Kuan-Hsu Fan-Chiang

Chi-Wen Lin

Wen-Hsu Chen

Kuan-Yu Chen

Chien-Tang Wang

Hoi-Sing Kwok

Hsing-Lung Wang

Li Tan

Ming-Cheng Chiu

Po-Hung Pan

Chia-Cheng Lai

Mao-Jung Chung

Kuan-Hsu Fan Chiang

Tung-Feng Wu

Ya-Jou Chen

Chin-Jung Chen

Sin-Hua Ho

Shun-Tai Huang

Chien-Liang Wu

Kuan-Chung Huang

Chia-Yeh Tsai

Hsien-Chang Tsai

An embodiment of the invention provides a display module including a plurality of light sources, a light guide plate, a reflective element, a reflective display unit, and a reflective polarizer. The light sources are configured to provide a plurality of illumination beams. The light guide plate has a first surface, a second surface, and a plurality of incident surfaces. The illumination beams enter the light guide plate through the incident surfaces. The reflective element is configured to change a propagation direction of at least one part of the illumination beams. The reflective element includes a plurality of reflective surfaces, and the reflective surfaces reflect the illumination beams having a first polarization direction. The reflective display unit is capable of modulating a polarization state of the illumination beams to form modulated beams. The reflective polarizer filters the modulated beams into an image beam.

Display device including polarizing beam splitter, sub-reflective elements, reflective polarizer, and reflective display unit

A light-emitting module including a substrate, a plurality of light-emitting elements, a window plate, and an encapsulant is provided. The light-emitting elements are disposed on the substrate and have a plurality of light colors. The window plate is disposed on light-emitting surfaces of the light emitting elements. The encapsulant wraps the light-emitting elements and surrounds the window plate. A front-lit liquid-crystal-on-silicon module is also provided.

Light-emitting module and front-lit liquid-crystal-on-silicon module

A light source module includes a light-emitting device, a light guide pipe, a wave plate, and a polarizer. The light-emitting device emits a beam. The light guide pipe includes a recessed curved surface, an output surface, a first convex surface, and a second convex surface. The recessed curved surface faces the light-emitting device. The output surface is opposite to the recessed curved surface. The first convex surface connects the recessed curved surface with the output surface. The second convex surface connects the recessed curved surface with the output surface and is opposite to the first convex surface, wherein the beam enters the light guide pipe through the recessed curved surface, and leaves the light guide pipe through the output surface. The wave plate is disposed on a path of the beam from the output surface. The polarizer is disposed on a path of the beam from the wave plate.

Light source module that can reduce the volume of an optical system and light loss

A liquid crystal on silicon panel including a plurality of driving circuits is provided. Each of the driving circuits includes a first driving route and a second driving route. The first driving route and the second driving route are configured to drive corresponding subpixel electrodes and respectively determine display content of a first wobulation image and a second wobulation image. In addition, a projection apparatus including the liquid crystal on silicon panel is also provided.

Liquid crystal on silicon panel with subpixel wobulation

A light guide module and an augmented reality (AR) apparatus are disclosed. The AR apparatus includes a display module and the light guide module. The light guide module includes a first light guide plate and a second light guide plate. The first light guide plate has a light receiving area for receiving optical input light with a predetermined incident angle and a light outputting area for outputting optical input light. The second light guide plate is disposed on the first light guide plate, and has dichroic surfaces for selectively transmitting or reflecting the optical input light.

Light guide module and augmented reality apparatus having the same

A head mounted display (HMD) apparatus is provided. The HMD apparatus includes a first lens, a second lens, a first micro-display disposed on the first lens, a second micro-display disposed on the second lens, a first light source, a second light source, and an eyeglass frame. A first side of the first micro-display corresponding to a first rubbing alignment processing direction and a first side of the second micro-display corresponding to a second rubbing alignment processing direction are symmetric with respect to a center line of the eyeglass frame between the first lens and the second lens. A first incident light emitted by the first light source is obliquely emitted from the first side of the first micro-display toward the first micro-display and a second incident light emitted by the second light source is obliquely emitted from the first side of the second micro-display toward the second micro-display.

Head mounted display apparatus

A liquid crystal on silicon display device is provided. Multiple grey levels of a pixel are transformed into multiple color values. The grey levels respectively correspond to multiple first sub-pixels. For each of the first sub-pixels, at least one parameter of a reflectance fitting function is obtained according to the color values, a gamma correction is performed according to the corresponding grey level to obtain a reflectance, and a pixel voltage is calculated according to the at least one parameter and the reflectance. The pixel voltage is applied to a pixel electrode of the corresponding first sub-pixel.

Method for calculating pixel voltage for liquid crystal on silicon display device

A display panel includes a first substrate and a second substrate assembled together with a sealant, and the resultant assembly encloses a display medium layer. An organic alignment layer and an inorganic alignment layer are disposed between the first substrate and the display medium layer. A first gap exists between the inorganic alignment layer and the sealant, and the organic alignment layer is located in the first gap. The inorganic alignment layer may contact the display medium layer, and the organic alignment layer may be in contact with the display medium layer in the first gap. A portion of the organic alignment layer may overlap the inorganic alignment layer. The inorganic alignment layer may be coated with a coating of hydrophobic molecules. The display panel may further include an opposite organic alignment layer and an opposite inorganic alignment layer between the second substrate and the display medium layer.

Display panel

A front-lit display includes a light source, a coupling lens, a first and a second polarizers, a light guide plate, and a reflective display panel. The light guide plate has a first surface, a second surface, a side surface connecting the first and second surfaces, and light guiding microstructures located between the first and second surfaces. The first polarizer, the coupling lens, and the light source are sequentially disposed at a side of the side surface. Light emitting elements of the light source that emit light beams of different colors are arranged along a first direction instead of a second direction. The first direction is parallel to the side surface and the first surface, and the second direction is parallel to the side surface and perpendicular to the first surface. The coupling lens includes vertical columnar structures arranged along the first direction and respectively extending along the second direction.

Front-lit display

A fabrication method of a polarization grating is provided. The method includes providing a polarization-sensitive material; and causing two orthogonally polarized lights to scan the polarization-sensitive material and to meet on the polarization-sensitive material.

Fabrication method of a polarizing grating

A reflective display apparatus is provided, which includes a liquid-crystal-on-silicon (LCOS) display module and a compensation layer. The LCOS display module has a liquid crystal layer. The liquid crystal layer includes liquid crystal cells, each having a beta angle ranging from about 9 degrees to about 11 degrees and a twist angle ranging from about 84 degrees to about 88 degrees relative to the beta angle. The compensation layer is disposed on the LCOS display module for compensating retardation of the liquid crystal layer.

Reflective display apparatus and method of forming the same

A projection device including a light source, a reflective spatial polarization modulator, a polarization grating, and a projection lens is provided. The light source is configured to provide a light beam. The reflective spatial polarization modulator is disposed on a path of the light beam and configured to reflect the light beam and modulate a polarization state of the light beam. The polarization grating is disposed on the path of the light beam between the light source and the reflective spatial polarization modulator, wherein the reflective spatial polarization modulator reflects the light beam from the reflective spatial polarization modulator back to the polarization grating. The projection lens is disposed on the path of the light beam from the reflective spatial polarization modulator, wherein the polarization grating is disposed on the path of the light beam between the reflective spatial polarization modulator and the projection lens.

Projection device and fabrication method of a polarization grating

A method for driving a reflective LCD panel is provided. The driving method includes following steps: the reflective LCD panel is driven by a driving signal with alternate positive and negative polarities, wherein the driving signal has positive polarity for a first driving duration and the driving signal has negative polarity for a second driving duration; a color beam is provided to irradiate the reflective LCD panel during a partial time period of the first driving duration; and the color beam is provided to irradiate the reflective LCD panel during a partial time period of the second driving duration.

Method for driving reflective LCD panel

A projection apparatus and a projection method of the projection apparatus are provided. A control unit adjusts a grayscale characteristic of a light valve according to a temperature of the light valve, so as to improve a contrast and grayscale accuracy of a screen image.

Projection apparatus and projection method for optimization of contrast and grayscale accuracy of projected image

A display module is provided. A light source is configured to provide an illumination beam. A light guide plate has a first surface, a second surface opposite to the first surface, and an incident surface connecting the first surface and the second surface. The illumination beam enters the light guide plate through the incident surface. An optical structure is connected to the light guide plate and configured to change a propagation direction of the illumination beam. A reflective display unit is capable of modulating a polarization state of the illumination beam to form a modulated beam. The second surface is disposed between the reflective display unit and the first surface. The first surface is disposed between the second surface and a reflective polarizer, and the reflective polarizer filters the modulated beam into an image beam.

Growing community of inventors

Tainan, Taiwan

Yuet-Wing Li