Transparent Pixel Layout for Higher Light-Transmission Displays
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Solution Overview
Problem
Existing transparent light emitting display apparatuses face limitations in transparency due to the area occupied by pixels, making it difficult for light to transmit effectively.
Innovation Solution
A light emitting display apparatus is designed with a substrate divided into transmission and non-transmission areas, featuring first and second color pixels in the non-transmission area with pixel driving circuits and light emitting devices, and a transparent pixel in the transmission area without a pixel driving circuit, allowing external light to pass through.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If pixels are provided in a transparent light emitting display apparatus to display images, then image display function is achieved, but light transmission through the pixels is blocked and transparency is limited
Solution Approach 1:
The display area is segmented into multiple pixel types: transparent pixels for light transmission and non-transparent pixels for image display. This segmentation allows different regions to serve different functions simultaneously, resolving the contradiction between image display capability and light transmission.
Solution Approach 2:
Different pixels are assigned different optical properties: transparent pixels have high light transmission characteristics while non-transparent pixels have image display characteristics. This local differentiation of quality allows the overall display to achieve both image display function and transparency in specific regions.
2Illumination intensity
If transparent pixels without pixel driving circuits are used in the transmission area, then light transmission is improved, but electrical connection for light emission control is lost
Solution Approach 1:
Multiple transparent pixels share common electrical connection lines (common anode line and common cathode line). This merging of electrical connections reduces the complexity compared to providing separate driving circuits for each transparent pixel, while still allowing independent control of light emission in each transparent pixel through the shared lines.
Solution Approach 2:
The common electrical connection lines serve multiple functions: they provide electrical connection to all transparent pixels simultaneously and enable independent control of each transparent pixel's light emission state. This multi-functionality reduces overall device complexity while maintaining control capability.
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 design enhances transparency by enabling external light to transmit through the transparent pixel, improving the overall transparency of the display apparatus.
Implementation Method 1
a transparent pixel in the transmission area, the transparent pixel including a transparent light emitting device that emits light
Implementation Method 2
a substrate divided into a transmission area through which light is transmitted and a non-transmission area through which light is blocked
Data Source
AI summary
A light emitting display apparatus is disclosed in which some of pixels outputting light can transmit external light, and the light emitting display apparatus comprises a substrate divided into a transmission area through which light is transmitted and a non-transmission area through which light is blocked, a first color pixel in the non-transmission area and including a first pixel driving circuit and a first light emitting device, a second color pixel in the non-transmission area and including a second pixel driving circuit and a second light emitting device, and a transparent pixel in the transmission area and including a transparent light emitting device.