Multiplexed Control Electrode for Anti-Peeping Display
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display panels require additional dimming boxes to achieve dynamic switchable anti-peeping, leading to increased thickness and incompatibility with in-cell touch functions.
Innovation Solution
A display panel design featuring a first and second substrate with a liquid crystal layer in between, where the control electrode layer or common electrode layer is multiplexed into a touch electrode layer, allowing for alternating display and touch modes without additional dimming boxes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If additional dimming boxes are added to realize dynamic switchable anti-peeping, then anti-peeping function is improved, but overall thickness increases
Solution Approach 1:
The patent merges the anti-peeping function with the existing substrate structure by forming a control electrode layer on the second substrate. This integrates the anti-peeping mechanism into the display panel's inherent structure, eliminating the need for separate dimming boxes and reducing overall thickness while maintaining dynamic switchable anti-peeping functionality.
Solution Approach 2:
The second substrate serves multiple functions: it acts as both the display substrate and the carrier for the control electrode layer that enables anti-peeping. This multi-functionality eliminates the need for additional dedicated anti-peeping components, thereby reducing thickness while achieving dynamic switchable anti-peeping.
2Object-affected harmful factors
If additional dimming boxes are added to realize dynamic switchable anti-peeping, then anti-peeping function is improved, but device complexity increases
Solution Approach 1:
The patent combines the anti-peeping control functionality with the existing substrate and electrode structure. The control electrode layer is integrated into the second substrate, merging the anti-peeping mechanism with the display structure and reducing overall device complexity by eliminating separate dimming box assemblies.
3Object-affected harmful factors
If conventional anti-peeping film is used, then anti-peeping function is achieved, but display brightness is reduced and thickness increases
Solution Approach 1:
The patent replaces the mechanical/optical approach of using physical anti-peeping film with an electrical field-based control system. The control electrode layer generates electric fields that manipulate liquid crystal molecules to achieve anti-peeping, eliminating the need for thickening film layers that would reduce brightness and maintain display quality.
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 enables lightweight and cost-effective display panels with dynamic switchable one-way anti-peeping and compatibility with in-cell touch functions, without increasing the overall thickness.
Implementation Method 1
the liquid crystal molecules rotate in an inclined plane, the inclined plane is parallel to a first direction and a second direction, the first direction is inclined relative to a thickness direction of the display panel
Implementation Method 2
When the display panel works in the touch mode, the control electrode layer or the common electrode layer receives a touch driving signal
Data Source
AI summary
The embodiment of the present disclosure is directed to a display panel. The display panel includes a first substrate, a second substrate, and a liquid crystal layer. The first substrate includes a common electrode layer and a pixel electrode layer. The second substrate comprises a control electrode layer. The liquid crystal layer is between the first substrate and the second substrate. The display panel includes a display mode and a touch mode working alternately. The display mode includes an anti-peeping mode and a sharing mode. When the display panel works in the anti-peeping mode, the control electrode layer receives a first display signal. When the display panel works in the sharing mode, the control electrode layer receives a second display signal. When the display panel works in the touch mode, the control electrode layer or the common electrode layer receives a touch driving signal.