Integrated Photo-Sensing in LCD Non-Display Area
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Liquid crystal display devices face issues with manufacturing cost, visibility, and power consumption due to the reliance on external photo-sensors for backlight control, which are unreliable and costly when separate from the panel.
Innovation Solution
Incorporating a photo-sensing device within the liquid crystal display panel to control backlight output based on sensed external light, reducing the need for external sensors and integrating drivers for improved reliability and cost-effectiveness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If external photo-sensors are used for backlight control, then the device can sense external light, but the reliability decreases and manufacturing cost increases
Solution Approach 1:
The patent merges the photo-sensing function with the existing liquid crystal display panel by integrating a photo-sensing device within the panel structure itself. This eliminates the need for separate external photo-sensors, thereby improving reliability through integration and reducing manufacturing costs by consolidating components into a single unified structure.
2Adaptability or versatility
If external photo-sensors are used for backlight control, then the device can control backlight output, but the device complexity increases
Solution Approach 1:
The patent combines the photo-sensing device with the liquid crystal display panel into a single integrated structure. This merger maintains the backlight control capability while reducing device complexity by eliminating separate external photo-sensor components and their associated mounting and wiring requirements.
3Ease of manufacture
If photo-sensing device is integrated in the panel, then manufacturing cost decreases, but the photo-sensing device may interfere with display area
Solution Approach 1:
The patent divides the liquid crystal display panel into distinct functional regions: a display area for image output and a non-display area for housing the photo-sensing device. This segmentation allows the photo-sensing device to be integrated into the panel structure without interfering with the display area, as the sensor is positioned in the non-display region where it does not obstruct visual output.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enhances visibility in bright environments and reduces power consumption in low-light conditions while lowering manufacturing costs by eliminating the need for separate photo-sensors, improving the overall performance and efficiency of the liquid crystal display device.
Implementation Method 1
a photo-sensing device in the non-display area for sensing an external light to control light output from the backlight in accordance with the sensed external light
Data Source
AI summary
A liquid crystal display device includes a liquid crystal panel divided into a non-display area and a display area where pixel cells are arranged in a matrix, a backlight for supplying light to the liquid crystal panel, and a photo-sensing device in the non-display area for sensing an external light to control light output from the backlight in accordance with the sensed the external light.