Display apparatus
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display apparatuses face challenges in achieving improved viewing angle control efficiency and light extraction efficiency while maintaining a slim form factor, as separate manufacturing and stacking of viewing angle control devices and touch sensors complicate the structure.
Innovation Solution
A display apparatus is designed with an optical gap layer and optical members integrated into the touch sensor, where the optical members fill openings in the gap layer to reflect light and control viewing angles, enhancing light extraction efficiency and luminance by reducing lost light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If viewing angle control devices and touch sensors are manufactured separately and stacked, then viewing angle control function is achieved, but device structure becomes complicated and thickness increases
Solution Approach 1:
The patent combines the viewing angle control device and touch sensor into a single integrated structure. The optical gap layer serves dual purposes: it provides viewing angle control by blocking oblique light while also functioning as part of the touch sensor structure. The touch electrodes are formed on the optical gap layer, creating a unified component that performs both viewing angle limitation and touch sensing functions, thereby eliminating the need for separate stacking of devices.
Solution Approach 2:
The optical gap layer is designed to perform multiple functions simultaneously. It acts as an optical element for viewing angle control by refracting and blocking oblique light, while also serving as a structural layer for the touch sensor that supports touch electrodes. This multi-functional design allows a single component to replace what would traditionally require separate stacked devices, simplifying the overall structure.
2Adaptability or versatility
If viewing angle control is implemented, then viewing angle limitation is improved, but light extraction efficiency decreases due to increased light loss
Solution Approach 1:
The patent converts the harmful effect of light loss into a beneficial function. The optical gap layer, which inherently blocks oblique light for viewing angle control, is designed with optical members (convex or concave structures) that refract blocked light back toward the front surface. This transforms what would be wasted light into useful light that contributes to luminance, thereby converting the harmful light loss into a beneficial light redirecting mechanism.
Solution Approach 2:
The optical members (convex or concave structures) formed in or on the optical gap layer act as intermediaries between the blocked light and the front surface. These optical members refract the oblique light that would otherwise be lost, redirecting it toward the front surface where it can contribute to useful luminance. This intermediary structure enables the system to maintain viewing angle control while recovering light that would have been lost.
3Adaptability or versatility
If optical members are added to control viewing angle, then viewing angle control efficiency improves, but device structure becomes more complex
Solution Approach 1:
The optical members (convex or concave structures) are integrated directly into the optical gap layer, which is already part of the touch sensor structure. Rather than adding separate optical control devices, the patent forms these optical members as integral parts of the existing optical gap layer through molding or deposition processes. This merging approach enhances viewing angle control efficiency while avoiding the structural complexity that would result from adding separate optical components.
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
The integrated structure improves both viewing angle limitation and light extraction efficiency, addressing the trade-off between these factors and simplifying the display apparatus design.
Implementation Method 1
the plurality of optical members is disposed to fill the plurality of openings, respectively
Implementation Method 2
optical members disposed on the touch sensor, in which the touch sensor includes a plurality of bridge electrodes disposed on the plurality of light emitting diodes, an optical gap layer disposed on the bridge electrode
Data Source
AI summary
The present disclosure relates to a display apparatus. More particularly, according to an aspect of the present disclosure, a display apparatus includes: a substrate; a plurality of light emitting diodes disposed on the substrate; a touch sensor disposed on the plurality of light emitting diodes; and a plurality of optical members disposed on the touch sensor, in which the touch sensor includes a plurality of bridge electrodes disposed on the plurality of light emitting diodes, an optical gap layer disposed on the bridge electrode and expose at least a part of each of the plurality of bridge electrodes, and a touch electrode disposed to be in contact with each of the plurality of exposed bridge electrodes, and the optical gap layer includes a plurality of openings corresponding to the plurality of light emitting diodes, respectively, and the plurality of optical members is disposed to fill the plurality of openings, respectively.