Integrated Display System Circuit Merging for XR
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Solution Overview
Problem
Display apparatuses for XR applications require high display quality, reduced circuit area, and low power consumption, which is challenging due to the need for peripheral circuits like driver circuits, memory devices, and image correction circuits, leading to increased housing size and power consumption.
Innovation Solution
A display system with a semiconductor substrate containing silicon, featuring a first layer with source and gate driver circuits, memory devices, and image correction circuits, and a second layer with additional transistors, allowing for a compact design and efficient power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If peripheral circuits (driver circuit, memory device, DAC, decoder, EL correction circuit) are provided to improve display quality, then display quality is improved, but housing size increases and power consumption increases
Solution Approach 1:
The patent merges multiple peripheral circuits (driver circuit, memory device, DAC, decoder, EL correction circuit) onto a single semiconductor substrate with the display apparatus. This integration consolidates previously separate components into one unified structure, reducing the overall housing size while maintaining all necessary functions for high display quality
Solution Approach 2:
The semiconductor substrate serves multiple functions simultaneously: it acts as the base for the display apparatus, hosts the driver circuit for signal control, contains the memory device for image data storage, includes the DAC for digital-to-analog conversion, incorporates the decoder for image decoding, and integrates the EL correction circuit for luminance correction. This multi-functionality eliminates the need for separate housings for each component
2Measurement precision
If peripheral circuits (driver circuit, memory device, DAC, decoder, EL correction circuit) are provided to improve display quality, then display quality is improved, but power consumption increases
Solution Approach 1:
The patent merges multiple peripheral circuits onto a single semiconductor substrate, enabling shared power supply infrastructure and reduced signal transmission distances. This integration minimizes parasitic power losses and allows for more efficient power management across all circuits, reducing overall power consumption compared to having separate components
Solution Approach 2:
The EL correction circuit is integrated directly on the semiconductor substrate with the display apparatus, allowing it to receive correction data and apply luminance corrections in real-time without external intervention. This self-contained correction system optimizes power usage by processing corrections locally rather than requiring continuous external power and data transmission
3Measurement precision
If the number of peripheral circuits is increased to improve display quality, then display quality is improved, but access time increases
Solution Approach 1:
The patent merges the memory device, driver circuit, and other peripheral circuits onto the same semiconductor substrate as the display apparatus. This physical integration dramatically reduces signal transmission distances and eliminates the need for complex inter-connect wiring, thereby reducing access time for image data retrieval and processing
Solution Approach 2:
The patent transitions from a multi-layered, distributed circuit architecture to a planar, integrated layout on the semiconductor substrate. By organizing all circuits in two dimensions on a single substrate rather than stacking them in three-dimensional space across multiple boards or housings, signal paths are shortened and access time is reduced
Data Source
AI summary
Provided is a display system with high display quality and high resolution. The display system includes a first layer and a display portion. The display portion is positioned in a region overlapping with the first layer. The first layer includes a semiconductor substrate containing silicon as a material, and a plurality of first transistors and a plurality of second transistors whose channel formation regions contain silicon are formed over the semiconductor substrate. The first layer includes a first circuit and a second circuit; the first circuit includes a driver circuit for driving the display portion; and the second circuit includes a memory device, a GPU, and an EL correction circuit. The display portion includes a pixel, and the pixel includes a light-emitting device containing organic EL and is electrically connected to the driver circuit. The memory device has a function of retaining image data; the GPU has a function of decoding the image data read from the memory device; and the EL correction circuit has a function of correcting light emitted from the light-emitting device.