Display Panel Light Transmitting Sections for Rapid Defect Detection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional methods for detecting circuit anomalies in display panels are time-consuming and labor-intensive, requiring the use of a lighter and microscope to identify defective lines one by one, and are inefficient in quickly determining if abnormal dots are within the display region.
Innovation Solution
A display panel design featuring a color filter substrate with light transmitting sections in the black matrix and a dummy pixel region, allowing for rapid detection of anomalies by aligning light-transmitting regions and marks on the array substrate, enabling quick identification of abnormal lines through changes in brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional methods using a lighter and microscope are used to detect defective lines, then detection accuracy can be achieved, but the detection process becomes time-consuming and labor-intensive
Solution Approach 1:
The patent applies preliminary action by pre-forming light transmitting sections within the black matrix layer at specific positions corresponding to dummy pixel units. These sections are prepared in advance during the manufacturing process, enabling rapid optical detection without requiring time-consuming manual inspection with lighters and microscopes. The pre-positioned light transmitting sections allow defective lines to be quickly identified through brightness changes when voltage is applied.
Solution Approach 2:
The patent replaces the mechanical inspection system (lighter and microscope) with an optical detection system integrated into the display panel structure. Instead of using external mechanical tools to illuminate and examine each defective line individually, the invention uses light transmitting sections that allow light to pass through specific areas, enabling visual detection of abnormal dots through brightness changes. This substitution dramatically reduces detection time while maintaining accuracy.
2Measurement precision
If conventional inspection methods are used, then detailed examination of each line is possible, but the process requires multiple devices and complex procedures
Solution Approach 1:
The patent merges the detection function directly into the display panel structure by integrating light transmitting sections within the black matrix layer. Instead of requiring separate external devices like lighters and microscopes, the detection capability is combined with the panel's existing structure. The light transmitting sections are formed as part of the black matrix during manufacturing, creating an integrated system that eliminates the need for multiple external detection devices.
Solution Approach 2:
The black matrix layer serves multiple functions: it provides light shielding for display pixels and simultaneously contains light transmitting sections for defective line detection. This multi-functionality allows the same structural layer to perform both display and detection roles, eliminating the need for separate dedicated detection equipment and simplifying the overall system.
3Productivity
If light transmitting sections are added to the black matrix, then detection efficiency improves, but the manufacturing process becomes more complex
Solution Approach 1:
The light transmitting sections are formed during the black matrix manufacturing process itself, using photomasks with predetermined patterns. This preliminary action during fabrication allows the detection features to be integrated without requiring separate post-processing steps. The photomask patterns are designed in advance to create light transmitting sections at specific positions corresponding to dummy pixel units, enabling rapid detection while maintaining manufacturing efficiency.
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 solution enables rapid and efficient detection of circuit anomalies, reducing the time and effort required to identify abnormal lines by utilizing the display panel's design to visually distinguish between normal and abnormal states through changes in light transmission.
Implementation Method 1
a black matrix of the color filter substrate comprises a light transmitting section in a portion of the peripheral region corresponding to a dummy pixel unit
Data Source
Figure 1~2(a)
Figure 2(b)~3(a)
Figure 3(b)
AI summary
The present disclosure relates to a color film substrate, a display panel and a method for detecting a display panel. The CF substrate includes a display region and a peripheral region corresponding to a dummy pixel region around the display region. A black matrix of the color filter substrate includes a light transmitting section in a portion of the peripheral region corresponding to a dummy pixel unit. The light transmitting section includes a first set of light transmitting sections and a second set of light transmitting sections. Each of the first and second set of light transmitting sections is respectively formed in a portion that extends along a first side and a second side which is opposite to the first side of the display region and corresponds to the dummy pixel unit.