Organic Light Emitting Display Device With Self-Assembly Contact Member
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Solution Overview
Problem
The existing organic light emitting display devices with integrated touch screens face issues of increased thickness and reduced visibility due to the addition of separate touch panels, which complicates the design and increases component costs.
Innovation Solution
The proposed solution involves an organic light emitting display device with a novel structure that includes a lower substrate with a display area, a non-display area, and an exposed area, along with upper and lower touch pad units connected by self-assembly contact members, allowing for direct electrical connection without the need for additional printed circuit boards on the upper substrate, thereby reducing thickness and enhancing design flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a separate touch panel is attached on the outer surface of the organic light emitting display device, then the touch screen function is achieved, but the overall thickness is increased and image visibility is degraded
Solution Approach 1:
The patent merges the touch sensor and display device into a single integrated structure. The touch sensor is formed on the same substrate as the display device, with touch pad units directly connected to the display device's pad units through connection electrodes, eliminating the need for a separate attached touch panel and thereby reducing overall thickness while maintaining touch screen functionality.
2Adaptability or versatility
If a separate touch panel is attached on the outer surface of the organic light emitting display device, then the touch screen function is achieved, but the visibility of the image is degraded
Solution Approach 1:
The integrated structure allows the touch sensor to be formed within the same optical path as the display device. By forming the touch sensor on the same substrate and using transparent conductive materials, the image visibility is maintained while achieving touch screen functionality, avoiding the visibility degradation caused by separate attached panels.
3Reliability
If separate printed circuit boards are used for connection, then electrical connection is achieved, but the number of components increases and design flexibility is reduced
Solution Approach 1:
The patent merges the connection function into the integrated structure by using connection electrodes formed directly on the substrate to connect the touch pad units with the display device's pad units. This eliminates the need for separate printed circuit boards, reducing component count and increasing design flexibility while maintaining reliable electrical connection.
Solution Approach 2:
The connection electrodes serve multiple functions: they provide electrical connection between the touch pad units and the display device, and they are integrated into the same manufacturing process. This multi-functional approach reduces the need for separate dedicated connection components like printed circuit boards.
4Reliability
If separate printed circuit boards are used, then electrical connection is achieved, but the cost of parts is increased
Solution Approach 1:
The integrated structure combines the touch sensor and display device manufacturing into a single process flow. The connection electrodes are formed using the same thin film deposition and patterning processes as the display device, eliminating the need for separate printed circuit board manufacturing and assembly, thereby reducing part costs while maintaining reliable electrical connection.
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 approach reduces the number of printed circuit boards, minimizes damage to pillar-shaped electrodes, and lowers component costs while improving the design and placement of components, enabling simultaneous signal transmission to both the thin film transistor and touch sensor.
Implementation Method 1
a self-assembly contact member disposed between the first connection electrode and the second connection electrode so as to electrically connect the first connection electrode and the second connection electrode
Data Source
AI summary
Provided is an organic light emitting display device. The organic light emitting display device includes a lower substrate including sub-pixels, a display area, a non-display area, and an exposed area; a lower touch pad unit in the non-display area and adjacent to the exposed area on the lower substrate; an upper substrate disposed opposite to the remaining area excluding the exposed area of the lower substrate; an upper touch pad unit on the upper substrate so as to correspond to the lower touch pad unit; a first connection electrode in direct contact with the lower touch pad unit; a second connection electrode opposite to the first connection electrode and in direct contact with the upper touch pad unit; and a self-assembly contact member disposed between the first connection electrode and the second connection electrode so as to electrically connect the first connection electrode and the second connection electrode.