Dell Products Inc.

Kuo-Wei Tseng

Yu-Chen Liu

Hong-Ji Huang

Chi-Fong Lee

How-Lan Eric Lin

Wei-Chou Chen

Dan Odell Boice

Chun-Wei Huang

A display includes an imaging device with a light source providing a first light emission and a second light emission, and an organic light-emitting diode panel proximate to the light source, wherein the first light emission leaks at an active area of the display device. A light emission barrier blocks the first light emission from leaking at the active area of the display while permitting the second light emission through the imaging device.

Light emission barrier to prevent light leakage

Described herein is a system and method for calculating variable refresh rate (VRR) flicker of a display used for information handling systems. VRR display data is provided to the display which generates a raw optical waveform. The raw optical waveform is captured by an optical sensor. The captured raw optical waveform is weighted using an inverse Fast Fourier Transform from a Temporal Contrast Sensitivity Function (TCSF). Calculating the flicker value of the weighted optical waveform over a defined moving window is performed. The flicker average and flicker maximum of the flicker value is used to determine a VRR flicker value.

Variable refresh rate flicker calculation methodology

An information handling system stylus transmits a wireless signal at a writing tip to enhance touch detection of the writing tip by a touchscreen display and receives wireless signals from the touchscreen display at a receiving antenna. To enhance control of wireless energy distributed at the writing tip, the receiving antenna is selectively coupled to the writing tip, such as by transitioning from a float of the receiving antenna to an interface with the stylus power source at transmit by the writing tip. Charge at the receiving antenna helps to shape the energy distribution from the writing tip, such as to match the energy distribution of other styluses in use at the touchscreen display.

Active stylus adaptive to multiple input types at an information handling system

An information handling system includes a display panel having an active area that generates visual images and an inactive area disposed outside the active area. The inactive area having an alignment mark that is invisible to a naked eye.

Infrared alignment marker for display assembly

An information handling display presents visual images in a privacy mode that manages visual image brightness with a local processing resource when a predetermined condition is detected, such as multiple individuals in the display field of view. For example, an information handling system provides visual information to a display timing controller that includes a pulse width modulation signal to command display backlight brightness. When in a privacy mode, the timing controller or another processing resource modifies the pulse width modulation signal to command a predetermined reduced brightness, such as in a range of 30 to 50 nits of reduced brightness.

Display managed privacy mode to present information handling system visual images

An information handling system presents visual images at a display that includes a display panel having a capacitive touch detection surface supported by an indium tin oxide layer disposed between a front layer, such as polarizer, and a display cell. To prevent excessive charge build up associated with the capacitive touch detection surface, a conductive ink is applied at the display panel perimeter and interfaced with a ground at the rear side of the display panel. In one example embodiment, a non-conductive ink insulates the conductive ink from the display panel except as desired to transfer excess charge from the indium tin oxide layer. The conductive ink may interface directly with the indium tin oxide layer or indirectly through a second non-conductive ink having greater conductivity than the insulative non-conductive ink.

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Zhongzheng Dist., Taiwan

Kuo-Wei Tseng