Display Panel Repair Laser Etching with Temperature Control
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Solution Overview
Problem
Existing methods for repairing display panels are inefficient and lack precision, particularly in creating a stair-step structure for layer etching, which complicates the accurate recreation of layers and increases the risk of height differences during the repair process.
Innovation Solution
An apparatus and method utilizing a laser emitter to etch faulty and surrounding portions of a display panel, with a guide that adjusts temperature to control etching depth and create a stair-step structure, allowing for differential heating and cooling of the faulty and surrounding areas to achieve distinct etching depths.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional etching methods are used without temperature control, then the etching process is simple, but the etching depth cannot be precisely controlled and uniformity is poor
Solution Approach 1:
The guide structure implements local quality by creating different temperature zones at different locations. The guide includes a first region that contacts the faulty portion and a second region that contacts the surrounding portion, allowing each region to be independently temperature-controlled to achieve different etching depths in different areas.
Solution Approach 2:
The guide is segmented into multiple temperature control regions (first region and second region) that can be independently controlled. This segmentation allows the system to apply different temperatures to different areas of the display panel, enabling precise control over etching depth in the faulty portion versus the surrounding portion.
2Manufacturing precision
If the faulty portion and surrounding portion are etched to the same depth, then the etching process is simple, but the stair-step structure cannot be formed for proper layer stacking
Solution Approach 1:
The guide creates local quality differences by maintaining different temperatures in different regions during etching. The first region (contacting faulty portion) is kept at a higher temperature to achieve greater etching depth, while the second region (contacting surrounding portion) is kept at a lower temperature for shallower etching, thereby forming the required stair-step structure.
Solution Approach 2:
The system changes the temperature parameter locally across different regions of the guide during the etching process. By adjusting the temperature in the first region versus the second region, the etching depth parameter is controlled differently in each area, enabling formation of the stair-step structure necessary for accurate layer recreation.
3Productivity
If laser etching is applied without temperature management, then the process is fast, but heat accumulation causes uneven etching and potential damage to surrounding areas
Solution Approach 1:
The guide acts as an intermediary between the laser etching process and the display panel. It absorbs and distributes the heat generated by laser irradiation, preventing direct heat accumulation on the panel. The guide's temperature control system actively manages thermal energy, allowing fast laser etching while maintaining etching uniformity and preventing damage to surrounding areas.
Solution Approach 2:
The system dynamically changes the temperature parameter in the guide during the laser etching process. By actively controlling and adjusting temperatures in different regions of the guide, the system enables high-speed laser etching while preventing heat accumulation and maintaining uniform etching quality across different areas.
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 approach enhances repair accuracy and efficiency by ensuring precise etching and layer recreation, forming a stair-step structure that facilitates the correct stacking of layers, thereby improving the overall repair process.
Implementation Method 1
a laser emitter that etches a faulty portion of the display panel and a first surrounding portion of the faulty portion by irradiating the faulty portion and the first surrounding portion with a laser
Implementation Method 2
a guide that is disposed to face the laser emitter and is configured to adjust at least one of a temperature of the faulty portion or a temperature of the first surrounding portion
Data Source
AI summary
An apparatus and method for repairing a display panel are provided. The apparatus includes a laser emitter that etches a faulty portion of the display panel and a first surrounding portion of the faulty portion by irradiating the faulty portion and the first surrounding portion with a laser and a guide disposed to face the laser emitter and configured to adjust at least one of a temperature of the faulty portion or a temperature of the first surrounding portion.