Display Device With Vertical Light Shielding For Thin Bezel
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Solution Overview
Problem
In multidisplay systems, the thin-bezel structure of display devices is challenging due to the bezel light shielding film, which cuts the display image between adjacent devices, requiring innovative designs to enhance display quality.
Innovation Solution
The display device incorporates a driver, pixel circuits, and relay lines to connect pixel electrodes, with a light shield and diffusion layers to minimize image cutting and improve display quality by diffusing light and reducing unnecessary capacitance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a bezel light shielding film is used to shield drivers and dummy electrodes from light, then shielding effectiveness is improved, but the display image is cut between adjacent display devices
Solution Approach 1:
The light shielding function is moved from the horizontal bezel area to the vertical non-display area by extending the light shielding layer downward to overlap the driver in plan view. This dimensional repositioning allows light shielding without creating visible cuts in the display image between adjacent devices.
Solution Approach 2:
A light shielding layer is introduced as an intermediary element positioned between the driver and the display area. This layer selectively blocks light from reaching the driver while being configured to minimize its visual impact on the display image, thus mediating between shielding requirements and image continuity.
2Area of stationary object
If the bezel width is reduced to improve display quality, then display area is increased, but light shielding effectiveness deteriorates
Solution Approach 1:
The light shielding strategy transitions from horizontal expansion in the bezel area to vertical extension in the non-display area. This allows the display area to be maximized horizontally while light shielding effectiveness is maintained through vertical extension of the shielding layer.
Solution Approach 2:
The light shielding layer is strategically positioned only in the specific region where it is needed - overlapping the driver in the non-display area. This localized approach provides effective shielding without requiring a larger bezel width, thus preserving display area while maintaining shielding quality where it matters.
3Reliability
If pixel circuits are disposed apart from the driver to reduce interference, then electrical isolation is improved, but device complexity increases
Solution Approach 1:
The pixel circuits are merged with the display area rather than being separated in the non-display area. This integration reduces device complexity by eliminating dedicated space for pixel circuits while maintaining electrical isolation through the light shielding layer that prevents light interference with the driver.
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 achieves a thin bezel structure with improved display quality by effectively connecting pixel electrodes and diffusing light, reducing image cutting and enhancing view angle and display uniformity.
Implementation Method 1
a light shield and diffusion layers to minimize image cutting and improve display quality by diffusing light
Data Source
AI summary
According to one embodiment, a display device includes a driver, a pixel circuit disposed to be apart from the driver in a plan view and to be electrically connected to the driver, a first pixel electrode disposed to overlap the pixel circuit in a plan view and to be electrically connected to the pixel circuit, a second pixel electrode disposed to overlap the driver in a plan view and to be closer to an outer edge of a display area than the first pixel electrode, and a relay line disposed between the pixel circuit and the first pixel electrode and between the driver and the second pixel electrode, the relay line electrically connecting the first pixel electrode and the second pixel electrode.