Semiconductor Light Emitting Display with Integrated Touch Sensing
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Solution Overview
Problem
Current display technologies, such as LCDs and AMOLEDs, face issues with slow response time, short lifespan, low production yield, and limited flexibility, while existing semiconductor light emitting devices struggle to provide a thin and flexible display solution with integrated touch sensing capabilities.
Innovation Solution
A display apparatus incorporating a touch sensor unit and a display unit with semiconductor light emitting devices, featuring a conductive bonding layer, X and Y electrodes, and a black matrix, where the X electrode is positioned between the semiconductor light emitting devices and phosphor layers, allowing for reduced thickness and efficient touch input sensing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If semiconductor light emitting devices are used to create a thin and flexible display, then flexibility and thickness are improved, but integration of touch sensing capabilities becomes difficult
Solution Approach 1:
The patent combines the display function and touch sensing function into a single integrated structure. The X electrode is positioned between the semiconductor light emitting devices and phosphor layers, while the Y electrode is combined with the X electrode to sense touch input. This merging allows both display and touch sensing to coexist in the same thin structure without requiring separate layers or components.
Solution Approach 2:
The X electrode serves dual purposes: it acts as part of the display structure (positioned between light emitting devices and phosphor layers) and simultaneously functions as a touch sensing element. The Y electrode is combined with the X electrode to provide touch input sensing capability. This multi-functionality enables the thin display structure to provide both visual output and touch interaction without adding extra thickness.
2Adaptability or versatility
If touch sensor is added to display apparatus, then touch sensing capability is improved, but thickness increases
Solution Approach 1:
The touch sensor electrodes (X and Y electrodes) are nested within the existing display structure rather than being added as separate external layers. The X electrode is positioned between the semiconductor light emitting devices and phosphor layers, effectively utilizing the internal space of the display unit. This nesting approach allows touch sensing functionality to be embedded within the display thickness, minimizing the overall thickness increase.
3Adaptability or versatility
If X electrode is positioned between semiconductor light emitting devices and phosphor layers, then touch sensing is enabled, but light transmission may be affected
Solution Approach 1:
The X electrode is positioned in the space between the semiconductor light emitting devices and phosphor layers, where it can perform touch sensing without significantly blocking the light path. The electrode's location is optimized to maintain light transmission efficiency while enabling touch capability. The local positioning allows the electrode to function without compromising the overall light output of the display.
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 solution enables a thinner display apparatus with improved touch sensing capabilities and flexible display options, addressing the limitations of existing technologies by integrating touch sensors within the display unit while maintaining efficient light transmission and contrast.
Implementation Method 1
light emitting diodes (LEDs) are semiconductor light emitting devices well known to convert a current into light
Implementation Method 2
phosphor layers may be formed on one surfaces of the plurality of semiconductor light emitting devices
Implementation Method 3
an Y electrode configured to be combined with the X electrode to sense a touch input
Data Source
Figure 1~2
Figure 3a~5a
Figure 5b~5c
AI summary
The present invention relates to a display apparatus and, more particularly, to a display apparatus using a semiconductor light emitting device. In the display apparatus including a touch sensor unit and a display unit controlled based on a touch input sensed through the touch sensor unit, the display unit includes: a conductive bonding layer; and a plurality of semiconductor light emitting devices bonded to the conductive bonding layer and arranged to form a plurality of rows, and the touch sensor unit includes: an X electrode disposed between the plurality of rows of the semiconductor light emitting devices in the display unit; and an Y electrode configured to be combined with the X electrode to sense a touch input.