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

Edge curvature measuring device, measuring system and measuring method of curved cover plate

A curvature measurement and measurement device technology, applied in the direction of measurement devices, instruments, etc., can solve problems such as refraction and reflection, numerical differences, inaccurate edge curvature, etc., and achieve the effect of improving measurement accuracy

Active Publication Date: 2020-09-18
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
View PDF11 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] ginseng figure 1 As shown, the non-contact measurement measures the relative distance between the laser head 20' and the curved cover 10', and records the trajectory of the laser head one by one to simulate the curvature of the curved cover. However, due to the refraction of light on the glass surface The phenomenon of reflection and reflection will cause the measured edge curvature to be different from the actual value
[0005] ginseng figure 2 As shown, in the contact measurement method, when the probe 30' is in contact with the curved cover 10', the measured edge curvature will also be different due to factors such as deformation of the surface of the curved cover and unstable contact of the probe. precise

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
  • Edge curvature measuring device, measuring system and measuring method of curved cover plate
  • Edge curvature measuring device, measuring system and measuring method of curved cover plate
  • Edge curvature measuring device, measuring system and measuring method of curved cover plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] ginseng image 3 As shown, the curved surface cover edge curvature measuring device in this embodiment includes a substrate 10 and a flexible film 20, and a plurality of fixed distance sensors 21 are implanted in the flexible film 20, combined with Figure 4 As shown, the curved cover plate 30 to be measured is placed between the substrate 10 and the flexible film 20, and the distance sensors are used to measure the distance between each distance sensor and the substrate.

[0048] Wherein, the flexible film in this embodiment can be covered on the surface of the curved cover plate and the substrate to be tested. Preferably, the Young's modulus of the flexible film is less than or equal to the preset threshold value E 0 . Young's modulus measures the stiffness of an isotropic elastic body and is defined as the ratio between uniaxial stress and uniaxial deformation within the range where Hooke's law applies. Set the preset threshold E according to different needs 0 , w...

Embodiment 2

[0054] ginseng Figure 5 As shown, the method for measuring the curvature of the edge of the curved cover plate in this embodiment specifically includes the following steps:

[0055] 1. Combine image 3 As shown, the flexible film 20 implanted with a plurality of fixed distance sensors 21 is placed on the substrate 10, and the initial distance l between each distance sensor 21 and the substrate 10 is obtained;

[0056] 2. Place the curved cover plate 30 to be measured on the substrate 10, and attach the flexible film 20 implanted with a plurality of fixed distance sensors 21 to the surface of the curved cover plate 30 to be measured, and obtain the distance sensors 21 and the substrate 10. The measuring distance L between;

[0057] 3. According to the difference L-l between the measured distance L and the initial distance l, the curvature of the edge of the curved cover plate is obtained by fitting.

[0058] Such as Figure 6 As shown, after obtaining the difference L-l betw...

Embodiment 3

[0062] ginseng Figure 7 As shown, the curved surface cover edge curvature measurement system in this embodiment includes a measurement device 100 and a data processing unit 200, wherein,

[0063] The measuring device 100 is exactly the same as the measuring device in Embodiment 1, and will not be repeated here;

[0064] The data processing unit 200 is connected with each distance sensor to obtain the distance measured by each distance sensor, calculate the edge curvature of the curved cover plate according to the distance between each distance sensor and the substrate measured by the distance sensor, and obtain the curved cover plate through data processing The process of edge curvature has been described in Embodiment 2, and will not be described in detail here.

[0065] Compared with the prior art, the present invention has the following beneficial effects:

[0066] In the present invention, by implanting a distance sensor in the flexible film, the entire surface of the f...

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 discloses a curved surface cover plate edge curvature measuring apparatus, measuring system and measuring method. The measuring apparatus comprises a substrate and a flexible membrane, aplurality of distance sensors that are fixedly arranged are embedded in the flexible membrane, and the distance sensors are used for measuring distance between all the distance sensors and the substrate. In the measuring apparatus disclosed in the invention, the distance sensors are embedded in the flexible membrane, the whole flexible membrane is attached to a surface of a curved surface cover plate to be measured, curved surface cover plate edge curvature can be measured according to distance measured by the distance sensors, contact between the flexible membrane and the surface of the curved surface cover plate cannot cause deformation of the surface of the curved surface cover plate, measurement precision of the curved surface cover plate edge curvature is improved, and the surface ofthe curved surface cover plate cannot be damaged.

Description

technical field [0001] The invention relates to the field of flexible display technology, in particular to a device, a measurement system and a measurement method for measuring the curvature of the edge of a curved cover plate with a full surface coverage. Background technique [0002] With the development and maturity of flexible display manufacturing technology, more and more designs of display panel edges have changed from traditional flat (2D) to Curved (3D), and the concept of Curved Cover Glass (hereinafter referred to as CCG) has followed, namely A curved curved glass cover. At present, the production steps of CCG by cover plate manufacturers include CNC cutting of master glass, edging, hot bending, chemical strengthening and other technological processes. [0003] The current methods for measuring the edge curvature of curved cover plates are divided into two types: non-contact and contact. [0004] ginseng figure 1 As shown, the non-contact measurement measures t...

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
Patent Type & Authority Patents(China)
IPC IPC(8): G01B21/20
CPCG01B21/20
Inventor 蔡孟起
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD