Touch Screen Display Apparatus with Light-Receiving Unit
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Solution Overview
Problem
Current touch screen display apparatuses with internal touch panels face limitations in sensing performance due to limited suitable materials and increased thickness, as well as reduced ability to sense external light.
Innovation Solution
A touch screen display apparatus featuring a substrate with a display unit and a touch panel comprising a sealing substrate, a first electrode, a second electrode, and a light receiving unit made of a phthalocyanine compound and C60 fullerene, which senses touch by detecting changes in external light, eliminating the need for a separate panel and simplifying the sensing circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an external touch panel is used, then touch sensing function is achieved, but the thickness of the display apparatus increases and manufacturing becomes complicated
Solution Approach 1:
The patent combines the touch panel and display device into a single integrated structure. The touch-sensitive substrate is formed directly on the display device substrate, eliminating the need for a separate external touch panel. This merging of functions reduces the overall thickness and simplifies the manufacturing process while maintaining touch sensing capability.
Solution Approach 2:
The display device substrate serves multiple functions: it acts as both the display structure and the base for the touch-sensitive substrate. The same substrate system handles both visual output and touch input functions, reducing the need for additional separate components and thereby reducing overall thickness.
2Device complexity
If suitable materials for internal touch panel are used, then touch sensing is integrated, but the panel's ability to sense external light is limited
Solution Approach 1:
The patent modifies the optical properties of the internal touch panel materials. By adjusting the transparency and optical characteristics of the touch-sensitive substrate and electrodes, the system maintains both touch sensing functionality and improved external light sensing capability. The electrode patterns and material compositions are optimized to allow sufficient light transmission while maintaining electrical functionality.
3Reliability
If a separate touch panel is included, then touch sensing capability is provided, but manufacturing process becomes complicated
Solution Approach 1:
The touch panel and display device are manufactured as a single integrated unit. The touch-sensitive substrate is formed directly on the display device substrate in the same manufacturing process, eliminating the need for separate assembly steps. This integration simplifies the manufacturing process by reducing the number of components and assembly operations required.
Solution Approach 2:
The same manufacturing process and substrate system are used to create both the display and touch sensing functions. By designing the substrate and electrode structures to serve dual purposes, the patent eliminates the need for separate manufacturing lines or assembly processes for distinct touch panel and display 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 apparatus effectively senses user touch by detecting changes in external light, improving touch sensitivity and reducing thickness, while eliminating the need for a separate touch panel, thus enhancing manufacturing efficiency and performance.
Implementation Method 1
a light receiving unit comprising an organic material and interposed between the first electrode and the second electrode
Implementation Method 2
The light receiving unit may include a phthalocyanine compound containing at least one metal selected from the group consisting of copper (Cu), iron (Fe), nickel (Ni), cobalt (Co), manganese (Mn), aluminum (Al), palladium (Pd), tin (Sn), indium (In), lead (Pb), titanium (Ti), rubidium (Rb), vanadium (V), gallium (Ga), terbium (Tb), cerium (Ce), lanthanum (La), and zinc (Zn)
Data Source
AI summary
A touch screen display apparatus for easily sensing the touch of a user. The touch screen display apparatus includes: a substrate; a display unit formed on the substrate; and a touch panel disposed to face the display unit, where the touch panel comprises a sealing substrate, a first electrode formed on the sealing substrate, a second electrode spaced apart from the first electrode, and a light receiving unit comprising an organic material interposed between the first electrode and the second electrode.