Coretronic Corporation

Ping-Yen Chen

Chung-Yang Fang

Yang-Ching Lin

Jen-Wei Yu

Yu-Fan Chen

Wen-Chun Wang

Ying-Hsiang Chen

Chun-Wei Lee

Jung-Wei Chang

Chih-Jen Tsang

Chun-Chien Liao

Chien-Hui Lee

Yin-Jen Lin

Yung-Lung Liu

Chung-Wei Huang

Hsin Huang

Hsiung-Chun Hsu

Bo-Han Cheng

Yu-Wei Liang

Cheng-Yi Tseng

An electrically controlled panel including a first electrically controlled device including first and second alignment layers and a first liquid-crystal layer disposed therebetween, a first polarizing layer, and a first compensation film disposed at a side of the first polarizing layer provided with the first electrically controlled device is provided. The first and second alignment layers have first and second alignment directions respectively. An included angle between the first and second alignment directions is between 75 degrees and 105 degrees. A phase retardation of the first liquid-crystal layer is between 400 nm and 600 nm or between 800 nm and 1200 nm. The first polarizing layer is disposed at a side of the first alignment layer away from the first liquid-crystal layer, and has a first absorption axis parallel to or perpendicular to the first alignment direction. A display apparatus adopting the electrically controlled panel is also provided.

Electrically controlled panel and display apparatus

A backlight module including a first light emitting unit, a first light guide plate, a second light emitting unit, a second light guide plate and a light control film is provided. The first light emitting unit is disposed on a first side surface of the first light guide plate. The second light emitting unit is disposed on a second side surface of the second light guide plate. The light control film is disposed between the first light guide plate and the second light guide plate. The light control film has a plurality of light-shielding microstructures arranged along a first direction and extending along a second direction. The first direction is perpendicular to the second direction.

Backlight module and display device

Provided is a display apparatus including a circuit substrate, a light-emitting layer, a polarizing layer, a quarter waveplate, and a bandpass polarizing reflective layer. The light-emitting layer includes a plurality of first light-emitting structures. The first light-emitting structures have a first peak emission wavelength. The polarizing layer is located on a side of the light-emitting layer away from the circuit substrate. The quarter waveplate is disposed between the polarizing layer and the light-emitting layer and overlaps the light-emitting layer and the polarizing layer. The bandpass polarizing reflective layer is disposed between the quarter waveplate and the light-emitting layer and includes a first bandpass polarizing reflective pattern overlapping the first light-emitting structures. A reflectance of the bandpass polarizing reflective pattern for light with a wavelength in a first wavelength range is greater than 20%. The first wavelength range is the peak emission wavelength ±10 nm.

Display apparatus

A backlight module includes a light guide element including first optical microstructures and second optical microstructures. An angle value of an angle of the first optical microstructures is V1. When the second optical microstructures are respectively recessed into or protrude from a bottom surface, a projection of each sub-optical microstructure on a reference plane has a peak point closest or to farthest from a light emitting surface and a first valley point and a second valley point farthest from or closest to the light emitting surface, a height difference between the peak point and the first valley point or the second valley point is ΔH, a length difference between the peak point and the first valley point or the second valley point is ΔL, and tan(ΔH/ΔL) is V2, where V2>0 and V2≤0.5·V1.

Light guide element and backlight module

A display device, including a circuit substrate, a light-emitting layer, a quarter-wave plate, and a band-pass polarizing layer, is provided. The light-emitting layer is disposed on the circuit substrate and has light-emitting structures, which are electrically connected to the circuit substrate and include first light-emitting structures, which have a first main light-emitting wavelength. The quarter-wave plate is disposed in overlap with the light-emitting structures and is located between the band-pass polarizing layer and the light-emitting layer. The band-pass polarizing layer includes at least one first band-pass polarizing pattern, which have a first absorption axis. The first wavelength range is the first main light-emitting wavelength±10 nm. An average transmittance of the first band-pass polarizing patterns to light with a wavelength outside the first wavelength range and a polarization direction parallel to the first absorption axis is less than 20%.

Display device

The invention provides a display device including a display panel and a backlight module including a light guide plate, a light source, and an optical film. The light guide plate has light incident and exit surfaces. The light source is disposed at one side of the light incident surface. The optical film is overlapped with the light exit surface, and has first optical microstructures facing the light exit surface. The display panel includes a liquid crystal cell overlapped with the light exit surface, first and second polarizers respectively disposed at two opposite sides of the liquid crystal cell, and a phase retardation film disposed between the first and second polarizers. The first polarizer is located between the liquid crystal cell and the optical film. An axial direction of an optical axis of the phase retardation film is perpendicular to an axial direction of an absorption axis of the first polarizer.

An electrically controllable viewing angle switch device is provided with a first substrate, a second substrate, a liquid crystal layer, multiple spacers, and multiple light-shielding patterns. The first substrate and the second substrate are overlapped with each other. The liquid crystal layer and the multiple spacers are disposed between the first substrate and the second substrate. The multiple light-shielding patterns are disposed on the second substrate. The orthographic projection area of each spacer on the second substrate is less than or equal to the orthographic projection area of each light-shielding pattern on the second substrate. The orthographic projection of each spacer on the second substrate is located within the orthographic projection of each light-shielding pattern on the second substrate. A display apparatus using an electrically controllable viewing angle switch device is also provided, in which light leakage near the spacer is extremely slight.

Electrically controllable viewing angle switch device and display apparatus

A display apparatus including a backlight module, first and second electrically-controlled elements, electrically-controlled first and second polarizers, a half-wave plate, and a display panel is provided. An included angle between first and second alignment directions of first and second alignment layers of the first electrically-controlled element is between 75 degrees and 105 degrees. An included angle between third and fourth alignment directions of third and fourth alignment layers of the second electrically-controlled element is between 165 degrees and 195 degrees. The half-wave plate is disposed between the second polarizer and the second electrically-controlled element. The display panel is disposed on the second electrically-controlled element. An included angle between an extending direction of prism structures of each of two optical brightness enhancement films of the backlight module and a viewing angle control direction of the display apparatus is less than 45 degrees. A method of driving the display apparatus is provided.

Display apparatus and method of driving the same

A display apparatus including a backlight module, first and second electrically-controlled elements, electrically-controlled first and second polarizers, a half-wave plate, and a display panel is provided. An included angle between first and second alignment directions of first and second alignment layers of the first electrically-controlled element is between 75 degrees and 105 degrees. An included angle between third and fourth alignment directions of third and fourth alignment layers of the second electrically-controlled element is between 165 degrees and 195 degrees. A first absorption axis of the first polarizer disposed between the backlight module and the first electrically-controlled element is perpendicular to a second absorption axis of the second polarizer disposed between the first and second electrically-controlled elements. The half-wave plate is disposed between the second polarizer and the second electrically-controlled element. The display panel is disposed on the second electrically-controlled element. A method of driving the display apparatus is provided.

Display apparatus having adjustable viewing angle range and method of driving the same

A viewing angle control device including a plurality of first polarizing portions and a plurality of transmissive portions is provided. The first polarizing portions are arranged along a first direction and extended in a second direction. The transmissive portions and the first polarizing portions are alternately arranged. Each of the first polarizing portions has a width in the first direction and a height in a direction perpendicular to the first direction and the second direction. A ratio of the height to the width of the first polarizing portion is greater than 1. A display apparatus adopting the viewing angle control device is also provided. The viewing angle control device and the display apparatus provided herein have a filter effect at a large viewing angle, improved light transmittance in the viewing angle direction, and excellent anti-peeping performance.

Viewing angle control device and display apparatus

A display apparatus is provided, including at least one viewing angle limiting device, a display panel, and a light polarization converter disposed between the at least one viewing angle limiting device and the display panel. The light polarization converter includes first regions and second regions alternately arranged. Light beams passing through the first regions and the second regions respectively have a first light polarization direction and a second light polarization direction. The light polarization converter is overlapped with the at least one viewing angle limiting device and the display panel. The viewing angle limiting device includes light-absorbing molecules. The light-absorbing molecules have a first absorption coefficient in a thickness direction of the viewing angle limiting device and a second absorption coefficient in a direction perpendicular to the thickness direction. A ratio of the first absorption coefficient to the second absorption coefficient is greater than 1.

An electronically-controlled viewing angle switching device, including a liquid crystal layer, a first electrode, a second electrode, a plurality of first insulation patterns, and a plurality of second insulation patterns is provided. The first electrode and the second electrode are respectively located at a first side and a second side of the liquid crystal layer. The first insulation patterns are located at the first side of the liquid crystal layer. The second insulation patterns are located at the second side of the liquid crystal layer. Each of the first insulation patterns is at least partially overlapped with the corresponding second insulation pattern. A display device adopting the electronically-controlled viewing angle switching device is also provided. The electronically-controlled viewing angle switching device and the display device provide a good anti-peed effect from a side viewing angle.

Electronically-controlled viewing angle switching device and display device

A backlight module including a circuit substrate, a plurality of light-emitting devices, a first cholesteric liquid-crystal layer, and a second cholesteric liquid-crystal layer is provided. The light-emitting devices are disposed on the circuit substrate and electrically connected to the circuit substrate. The first cholesteric liquid-crystal layer is disposed on the light-emitting devices and overlapped with a light-emitting surface of each of the light-emitting devices. The second cholesteric liquid-crystal layer is disposed on the first cholesteric liquid-crystal layer and overlapped with the first cholesteric liquid-crystal layer. The first cholesteric liquid-crystal layer and the second cholesteric liquid-crystal layer respectively have a first chiral direction and a second chiral direction. A display apparatus adopting the backlight module is also provided.

Backlight module and display apparatus

A display device includes a view angle switching module and a display module. The view angle switching module includes a first polarizer and a view angle adjustment layer. The display module and the view angle switching module are overlapped. The display module includes a display layer and a second polarizer. The view angle adjustment layer is located between the first polarizer and the second polarizer. An average degree of polarization of the first polarizer for light with a wavelength falling within a first wavelength band is less than an average degree of polarization of the second polarizer for the light with the wavelength falling within the first wavelength band. The display device may provide a privacy function and images with good image quality.

The invention relates to an electrically controllable viewing angle switch device and a display apparatus. The switch device includes a first substrate, a second substrate, a liquid crystal layer, spacers, a first alignment film, a second alignment film, a first polarizer, and a second polarizer and has a light transmission region. The second substrate is disposed opposite to the first substrate. The liquid crystal layer and the spacers are located between the first substrate and the second substrate in the light transmission region. The spacers are fixed on the first or second substrate. The first polarizer and the second polarizer are disposed on opposite sides of the liquid crystal layer. The axial directions of the transmission axis of the first polarizer and the transmission axis of the second polarizer are parallel or perpendicular to the alignment direction of the first alignment film and the second alignment film.

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Hsin-Chu, Taiwan

Ping-Yen Chen