Display Panel Bottom Cutout Layout for Gate Driver Light Shielding
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Solution Overview
Problem
Display devices face issues with luminance deviation due to process deviations and transistor characteristics, leading to decreased image quality, particularly caused by light irradiation affecting the gate driver's electrical characteristics.
Innovation Solution
A display device design with a gate driver and cutout areas on the bottom panel, where the cutout areas are strategically positioned to minimize light irradiation, reducing polarization effects and maintaining improved separation distances to prevent light from reaching the gate driver, thereby stabilizing transistor electrical characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the gate driver is placed close to the display area to reduce device complexity, then the device complexity is reduced, but light from the display area may reach the gate driver causing electrical characteristic changes
Solution Approach 1:
A light blocking structure is introduced as an intermediary element between the display area and the gate driver. This structure selectively blocks light paths while allowing electrical signals to pass through, thus protecting the gate driver from light-induced electrical characteristic changes without requiring increased separation distance or complex routing
Solution Approach 2:
The harmful light effect is extracted and blocked by introducing a dedicated light blocking structure. This separates the light blocking function from the existing components, allowing the gate driver to maintain its electrical function while being protected from light interference
2Stability of the object's composition
If the bottom panel width is increased to improve structural stability, then the structural stability is improved, but light may more easily reach the gate driver through the bottom panel
Solution Approach 1:
A light blocking structure is positioned within or near the bottom panel to intercept light before it reaches the gate driver. This intermediary structure allows the bottom panel to maintain its structural width and stability while preventing the harmful light path through the added blocking element
3Object-affected harmful factors
If the separation distance between the gate driver and display area is increased to prevent light irradiation, then the light irradiation effect is reduced, but the device complexity and area increase
Solution Approach 1:
The light blocking function is extracted and implemented through a dedicated light blocking structure rather than relying solely on increased separation distance. This allows the gate driver to be positioned closer to the display area while still preventing light irradiation, thus reducing the area and complexity penalties
Solution Approach 2:
A light blocking structure serves as an intermediary that enables close positioning of the gate driver to the display area. By blocking the light path at this intermediary point, the design achieves both compact layout and effective light protection
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 design enhances display quality by reducing light spots and maintaining consistent transistor performance, resulting in improved image quality and reduced luminance deviations.
Implementation Method 1
bottom panel below the display panel, and having a width on a plane in the first direction of about 1 μm to about 160 μm... a phenomenon in which light irradiated through the cutout areas reaches the gate driver may be relatively reduced or prevented
Data Source
AI summary
A display device includes: a display panel including a display area and a surrounding area surrounding the display area; a gate driver in the surrounding area of the display panel; and a bottom panel below the display panel and including a cutout area having a width in a range of 1 micrometers (μm) to 160 μm in a first direction in a plan view.