Vertical Driving Circuit Layout for Uniform Bezel-Less Displays
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Solution Overview
Problem
Existing bezel-less display modules suffer from signal coupling and non-uniform design density issues due to the presence of driving circuits between pixels, leading to brightness variations and image quality defects.
Innovation Solution
A display module design with a first driving circuit in a vertical form separating two pixel arrays, each with closely contacted pixels, and using second driving circuits to minimize signal coupling and brightness variations, with dummy circuits maintaining potential symmetry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a driving circuit is provided in between pixels to achieve bezel-less display, then the bezel area is reduced, but signal coupling occurs between pixels and driving circuit causing brightness non-uniformity
Solution Approach 1:
The driving circuit is repositioned from a horizontal arrangement between pixel columns to a vertical arrangement along the edge of the pixel array. This dimensional change in circuit layout eliminates the overlap between data lines and driving circuit, preventing signal coupling while maintaining bezel-less display.
2Area of stationary object
If data line is partially overlapped with driving circuit to reduce substrate space, then area efficiency is improved, but signal coupling causes brightness deterioration in specific pixels
Solution Approach 1:
The driving circuit is extracted from its traditional position within the pixel array area and relocated to the vertical edge region. This separation removes the harmful overlap between data lines and driving circuit, eliminating signal coupling effects while still utilizing the substrate space efficiently through compact vertical layout.
3Manufacturing precision
If driving circuit is placed in center area in vertical form, then signal coupling is prevented, but design symmetry is changed
Solution Approach 1:
The design intentionally adopts asymmetric layout where the driving circuit is positioned vertically along one edge of the pixel array rather than being symmetrically distributed. This asymmetric configuration effectively separates the driving circuit from the pixel data lines, preventing signal coupling while maintaining functional performance.
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 achieves a bezel-less display with uniform pixel brightness and improved image quality by preventing signal coupling and optimizing circuit symmetry, enabling enhanced color reproducibility and efficient use of substrate space.
Implementation Method 1
each pixel of the first plurality of pixels and each pixel of the second plurality of pixels may include a plurality of inorganic light emitting devices
Data Source
AI summary
A display module includes: a substrate; a first driving circuit provided in a center area on the substrate in a vertical form; a first pixel array formed on a left area of the substrate relative to the first driving circuit, wherein the first pixel array may include a first plurality of pixels disposed in a matrix form; and a second pixel array formed on a right area of the substrate relative to the first driving circuit, wherein the second pixel array may include a second plurality of pixels disposed in the matrix form, wherein each pixel of the first plurality of pixels and each pixel of the second plurality of pixels may include a plurality of inorganic light emitting devices, and wherein each of the first pixel array and the second pixel array are separated from the first driving circuit by a pre-set distance.