Display device and method for manufacturing the same

The display device's innovative electrode structure with a base electrode and precise etching process enhances reflectance and aperture ratio, addressing manufacturing challenges and improving OLED performance.

JP2025006268APending Publication Date: 2025-01-17JAPAN DISPLAY INC
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Patent Information

Application Number
JP2023106953
Authority / Receiving Office
JP · JP
Patent Type
Applications
Current Assignee / Owner
Filing Date
2023-06-29
Publication Date
2025-01-17

AI Technical Summary

Technical Problem

Existing display devices face challenges in improving the aperture ratio, reflectance, and yield of organic light emitting diode (OLED) elements due to the structure of the lower electrode, which affects the light reflection and processing precision.

Method used

The display device incorporates a base electrode with a first reflective layer and a lower electrode covered by a second reflective layer, along with a rib having a pixel opening, where the base electrode width is larger than the lower electrode, and the structure is manufactured through precise etching processes to enhance reflectance and reduce manufacturing defects.

Benefits of technology

This configuration achieves high reflectance with thin electrodes, allows for high-definition display by precise spacing, and increases the aperture ratio while minimizing manufacturing issues such as cracks and discontinuities, thereby improving the yield and performance of the OLED elements.

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Abstract

To provide a display device and a method for manufacturing the same having an improved electrode structure.SOLUTION: A display device according to an embodiment includes a base electrode including a first reflective layer, a lower electrode including a second reflective layer and disposed on the base electrode, and a rib covering an edge of the base electrode and having a pixel opening overlapping the lower electrode, the width of the base electrode is greater than the width of the lower electrode.SELECTED DRAWING: Figure 5
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Citation Information

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