Unlock instant, AI-driven research and patent intelligence for your innovation.

Luminescent panel detection device and detection method thereof

A technology for light-emitting panels and detection devices, which can be used in measurement devices, optical testing of flaws/defects, material analysis by optical means, etc., and can solve problems such as interference, complex multi-angle detection equipment for machines, and no standards.

Inactive Publication Date: 2018-02-06
SHANGHAI MICRO ELECTRONICS EQUIP (GRP) CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a light-emitting panel detection device and its detection method, mainly to solve the following problems: (1) manual detection of light-emitting panel defects is inefficient, has no standards, and is greatly affected by personal subjective factors; (2) there are many machines The angle detection equipment is complex, and it is difficult to achieve comprehensive detection; (3) The detection process is interfered by moiré fringe and background texture

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Luminescent panel detection device and detection method thereof
  • Luminescent panel detection device and detection method thereof
  • Luminescent panel detection device and detection method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] refer to figure 1 , this embodiment discloses a light-emitting panel inspection device for detecting defects on the light-emitting panel 10 .

[0039] Wherein, the light-emitting panel 10 emits light in a certain angle range, wherein the same-direction beam 11, the same-direction beam 12, and the same-direction beam 13 pass through an optical unit 20 and are respectively converted into a focused beam 11a, a focused beam 12a, and a focused beam 13a, and respectively to the same location on the back focal plane 30. The purpose of this optical unit is to gather light beams of different angles at different positions on the same surface; thus, each point of the rear focal plane 30 corresponds to a light beam of an angle on the light-emitting panel 10; furthermore, different angles can be realized through each point detection.

[0040] The optical unit 20 may be a combination of several lenses, such as a combination of convex lenses and concave lenses; the material of the l...

Embodiment 2

[0049] refer to figure 2 , this embodiment discloses a light-emitting panel inspection device for detecting defects on the light-emitting panel 10 . The difference from the first embodiment is that on the basis of the first embodiment, detection channels are added to realize simultaneous detection of different luminous colors. Usually, in the defect detection of the luminescent panel 10, it is necessary to light the luminescent panel 10 multiple times for detection, each time a color in RGB (red, green, blue) is lighted, this is because the light of multiple colors is detected at the same time. The pixel requirements of the detector 40 are very high, and generally a detector 40 with 70 to 80 million pixels is required to complete the process, and a detector 40 with low pixels cannot use multiple colors for simultaneous measurement.

[0050] In this embodiment, the dichroic light splitting unit 20a and the dichroic light splitting unit 20b are added on the basis of the first ...

Embodiment 3

[0055] refer to Figure 4 , which is a flow chart of the light-emitting panel detection method of this embodiment. This embodiment provides a defect detection method for a light-emitting panel. Specifically, the following steps are included,

[0056] S1: collect the light intensity distribution and angular spectrum characteristics of the light emitting panel 10; preferably, what this embodiment collects is the light intensity distribution of the light emitting panel 10 in the same angular direction, specifically, use the optical unit 20 to collect the light intensity distribution of the light emitting panel 10 at the same angle The light is focused on the rear focal plane 30 ; this method can be used to collect light intensity distributions at different angles on the light emitting panel 10 with one detector 40 .

[0057] S2: Process and analyze the light intensity distribution and angular spectrum features; use the processing unit 50 to perform signal processing and analysi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a luminescent panel detection device and detection method thereof. The device comprises an optical unit, a detector and a processing unit, wherein the optical unit is provided with a back focus surface; in the detection process, a luminescent panel gives out light beams in various angles; the optical unit receives the light beams sent out by the luminescent panel; the lightbeams with the same angles are gathered onto the same point on the back focus surface; the detector is provided with a detection surface; the detection surface is positioned on the back focus surfaceor the conjugate surface of the back focus surface; the detector detects the light distribution condition and the optical characteristics of light on different points on the back focus surface and converts the information into detection signals; the processing unit is connected with the detector, receives and processes the detection signal and outputs the detection result. By using the device andthe method, one detector can be used for realizing the multi-angle all-around detection on the luminescent panel; the interference by Moire fringes and background veins can be effectively avoided; thedetection quality is improved.

Description

technical field [0001] The invention relates to the field of defect detection of luminescent panels, in particular to a luminous panel detection device and a detection method thereof. Background technique [0002] With the widespread application of flat panel displays, the defect detection requirements for flat panel displays have become increasingly prominent. At present, most of the industry's detection of MURA (the phenomenon of various traces caused by uneven brightness display on the flat panel) is still through manual visual inspection, which is greatly affected by subjectivity and is prone to missed detection. [0003] MURA may show different contrasts at different angles, mainly including horizontal stripes or forty-five-degree angle stripes, which may be very straight squares, may appear in a certain corner, or may be defects without rules at all. Traces here and there. In order to improve the detection accuracy, during manual inspection, multi-angle observation i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N21/95G01N21/88
CPCG01N21/95G01N21/8806G01N2021/8829
Inventor 周钰颖陆海亮
Owner SHANGHAI MICRO ELECTRONICS EQUIP (GRP) CO LTD