Organic Light-Emitting Display Layout for Camera Light Transmission
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Solution Overview
Problem
In organic light emitting display panels, integrating a camera in a forward direction reduces the transmittance of light due to the presence of multiple transistors in the display area, degrading image quality captured by the camera.
Innovation Solution
The solution involves positioning pixel driving circuits outside the transparent area, with higher density of organic light emitting diodes in the buffer and opaque areas, and using transparent and double-layer cathodes to maintain light transmission while driving the diodes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If pixel driving circuits are included in the transparent area to drive organic light emitting diodes, then the display functionality is improved, but the light transmittance is reduced due to the presence of multiple transistors
Solution Approach 1:
The patent divides the display panel into distinct regions: a transparent area for the camera with minimal transistors, a buffer area with pixel driving circuits, and an opaque area with dense pixel circuits. This segmentation allows the transparent area to maintain high light transmittance while the buffer area provides necessary driving functionality.
Solution Approach 2:
The patent extracts the pixel driving circuits from the transparent area and relocates them to the buffer area. This extraction removes the harmful transistors from the light path in the transparent area, thereby improving light transmittance while maintaining display functionality through the buffer area's driving circuits.
2Reliability
If multiple transistors are included in each pixel to prevent luminance deviation, then the display quality is improved, but the light transmittance is reduced causing degradation in camera image quality
Solution Approach 1:
The patent segments the transistor distribution across different areas: the transparent area has minimal transistors for camera functionality, while the buffer and opaque areas contain the necessary transistors for luminance stability. This segmentation allows each area to optimize for its specific function.
Solution Approach 2:
The buffer area acts as an intermediary that houses the pixel driving circuits and transistors needed for luminance stability, while the transparent area maintains high light transmittance. The buffer area mediates between the conflicting requirements of luminance stability and camera image quality.
3Ease of operation
If the camera is positioned in the display area to enable self-photographing, then the user experience is improved, but the transmittance of light is reduced due to the presence of transistors
Solution Approach 1:
The patent extracts the transistor-heavy pixel circuits from the camera position and relocates them to the buffer area. This allows the camera to be positioned in the transparent area with minimal transistors, maintaining high light transmittance while preserving the self-photographing user experience.
Solution Approach 2:
The patent creates a spatial dimensionality change by introducing a buffer area between the transparent camera area and the opaque display area. This additional spatial dimension allows the driving circuits to be positioned elsewhere, freeing up the transparent area for optimal light transmission.
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 configuration enhances light transmission to the camera, improving image quality by maintaining luminance and reducing luminance deviation, thus optimizing the display and camera functionality.
Implementation Method 1
a transparent area organic light emitting diode provided in the transparent area
Implementation Method 2
a transparent area pixel driving circuit provided in the buffer area to drive the transparent area organic light emitting diode
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The present invention provides an organic light emitting display apparatus (10) and an electronic device including the same. The organic light emitting display apparatus (10) includes an organic light emitting display panel (100) including a display area (AA) and a non-display area (NAA), the display area (AA) including a transparent area (AA1), a buffer area (AA2) provided outside the transparent area (AA1), and an opaque area (AA3) provided outside the buffer area (AA2), a camera (500) provided in the transparent area (AA1) in a rear surface of the organic light emitting display panel (100) to photograph a region in a forward direction with respect to the organic light emitting display panel (100), and a transparent area pixel driving circuit (TPDC) provided in the buffer area (AA2) to drive a transparent area organic light emitting diode (TOLED) provided in the transparent area (AA1). The transparent area organic light emitting diode (TOLED) is connected to the transparent area pixel driving circuit (TPDC) through a transparent area electrode line (TEL).