Screen color comprehensive detection device

Abstract

The invention provides a screen color comprehensive detection device, and belongs to the field of 3C detection, and the screen color comprehensive detection device comprises a screen end color detection module, a screen imaging area color detection module and a jig carrying platform module. The screen end color detection module is used for performing color detection on a plurality of point positions, including IR, BM0, BM and AR, at the upper end of the screen; the screen imaging area color detection module performs color value detection on a plurality of point positions of an imaging area at multiple angles; the jig platform deck module is used for supporting and positioning a to-be-detected screen. Through the screen end color detection module and the screen imaging area color detection module of the device, multi-area and multi-angle color detection is carried out on a product on the jig carrying table module, key parameters including colors, reflectivity and the like of a screen are distinguished, the product quality is guaranteed, and the device is convenient to popularize and apply in the field of display screens such as 3C and the like.

Description

Technical Field

[0001] The present invention belongs to the field of 3C detection, and particularly relates to a comprehensive screen color detection device. Background Art

[0002] In the 3C (Computer, Communication, and Consumer Electronics) industry, the quality requirements for screens are getting higher and higher, especially for color. However, problems such as color deviation, brightness non-uniformity or abnormality, white blooming, yin-yang screen, distortion, etc. often occur due to factors such as viewing angle, light source environment change, poor adhesion of the backlight module, and polarization film angle deviation. Therefore, it needs to be detected and qualified before being installed and used.

[0003] For traditional RGB three-channel detection, the detection rates for subtle color differences and material defects are not high, and the objective measurements of key parameters such as color temperature, color gamut coverage, and blue light intensity are incomplete or inaccurate. Moreover, traditional detection is only for 0° vertical measurement and cannot cover the commonly used viewing angles in the range of 35% - 60°.

[0004] Therefore, for color and reflectivity, it is necessary to develop a multi-mode screen color detection device with more accurate detection and comprehensive multi-angle coverage. Summary of the Invention

[0005] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a comprehensive screen color detection device that can solve the above problems.

[0006] A comprehensive screen color detection device includes a screen end color detection module, a screen imaging area color detection module, and a fixture carrier module; the screen end color detection module performs color detection on multiple points at the upper end of the screen including IR, BM0, BM, and AR; the screen imaging area color detection module detects color values of multiple points in the imaging area from multiple angles; the fixture carrier module is used to support and position the screen to be detected.

[0007] Note: IR - Infrared, an infrared component, an infrared sensor integrated on the screen edge, used for functions such as ambient light perception, distance sensing, or face recognition; often hidden in the top border of the screen, such as the "notch" or "hole-punch" area, and in some models, it is designed to overlap with the BM area to reduce visual obtrusiveness.

[0008] BM - Black Matrix, the black matrix or black edge, is the black area located at the edge of the screen. It is used to block the light leakage caused by screen assembly errors, wrap the edge of the liquid crystal layer LCD or display unit, and prevent light from spilling out and affecting visual consistency. It surrounds the screen display area on all sides, forming a "black edge", that is, the BM area, which is usually located between the display layer, such as the liquid crystal panel, and the touch layer, such as the outer glass.

[0009] BM0, a subdivision type of the BM area, specifically refers to the black matrix inside the screen display layer. It is used to block the metal traces or circuit signals between the sub - pixels red / green / blue, and avoid stray light interfering with the display accuracy. Its position is embedded inside the display layer and is in direct contact with the pixel unit, belonging to the microscopic structure.

[0010] AR - Anti - Reflective, the anti - reflective coating, is an optical coating on the screen surface. It improves visibility by reducing ambient light reflection, especially enhancing contrast under strong light; it covers the outermost layer of the screen and protects the glass surface.

[0011] Furthermore, the screen end color detection module uses an integrating sphere with diffused illumination of 6° - 10° to perform non - contact color detection on the screen to be measured at a close distance by spectrophotometry.

[0012] Furthermore, the screen imaging area color detection module adopts a multi - angle color measurement sensor, including a multi - angle light source and multiple inline spectrophotometers for alternately collecting specular reflection and diffuse reflection data at multiple points in the screen imaging area. The reflection data and color coordinates are output from the collected spectra.

[0013] Furthermore, the screen imaging area color detection module performs color acquisition at three points on the diagonal of the screen imaging area.

[0014] Furthermore, the fixture carrier module adopts a linkage side push - clamp positioning component and is set to reciprocate on the longitudinal transfer line. The screen end color detection module and the screen imaging area color detection module are set on the side of the corresponding longitudinal transfer line.

[0015] Furthermore, the screen color comprehensive detection device also includes a visual pre - positioning module. The bearing bottom plate of the fixture carrier module has a hollow design, and the visual pre - positioning module performs visual pre - positioning on the screen to be measured on the fixture carrier module from below or above.

[0016] Furthermore, the screen color comprehensive detection device also includes a color calibration module, which is used to calibrate the dark balance and white balance of the screen end color detection module.

[0017] Further, the screen end color detection module and the screen imaging area color detection module are independently arranged on their own mounting brackets or supported by a shared color inspection gantry. The screen end color detection module and the screen imaging area color detection module are arranged in a straight line or side by side.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: Through the screen end color detection module and the screen imaging area color detection module of the present device, multi-region and multi-angle color detection is performed on the products on the fixture carrier module, and key parameters such as screen color and reflectivity are distinguished, ensuring the product quality and facilitating popularization and application in display fields such as 3C. Brief Description of the Drawings

[0019] Figure 1 It is a schematic diagram of the screen color comprehensive detection device of the present invention; Figure 2 It is a partial schematic diagram of the screen color comprehensive detection device; Figure 3 It is a schematic diagram of the detection points of the screen end color detection module; Figure 4 It is a schematic diagram of the layout of the screen imaging area color detection module and the fixture carrier module; Figure 5 It is a schematic diagram of the dual-angle spectrocolorimetric mechanism adopted by the screen imaging area color detection module; Figure 6 It is a schematic diagram of the detection points of the screen imaging area color detection module; Figure 7 It is a schematic diagram of the fixture carrier module; Figure 8 It is a schematic diagram of the vision pre-positioning module.

[0020] In the figure: 10. Screen end color detection module; 20. Screen imaging area color detection module; 30. Fixture carrier module; 31. Hollow bottom plate; 32. Product support hollow suction plate; 33. Long side fixed stop assembly; 34. Short side fixed stop assembly; 35. Long side push clamp positioning assembly; 36. Short side push clamp positioning assembly; 37. Side positioning linkage drive assembly; 38. Suction cup; 39. Carrier leveling assembly; 40. Longitudinal transfer line; 50. Vision pre-positioning module; 51. Pre-positioning camera; 52. Positioning lens; 53. Positioning light source; 54. Positioning frame; 55. Positioning clamping ring; 60. Dark balance calibration assembly; 70. White balance calibration assembly; 80. Color inspection gantry; 90. Detection base plate. Detailed implementation manners

[0021] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] A screen color comprehensive detection device, see Figures 1-8 , the screen color comprehensive detection device includes a screen end color detection module 10, a screen imaging area color detection module 20, and a fixture stage module 30; the screen end color detection module 10 performs color detection on multiple points (see Figure 3 ) at the upper end of the screen including IR, BM0, BM, and AR; the screen imaging area color detection module 20 performs color value detection on multiple points in the imaging area from multiple angles; the fixture stage module 30 is used to support and position the screen to be detected.

[0023] Among them, the screen end color detection module 10 uses an integrating sphere to cooperate with diffused illumination of 6°-10°, and performs non-contact color detection on the screen to be detected at a short distance by spectrophotometry.

[0024] The preferred diffused illumination angle of the screen end color detection module 10 is 8°, and it detects the upper end of the screen to be detected supported on the lower fixture stage module 30. The detection points include IR, BM0, BM, and AR. During detection, the detection distance between the detection bottom surface and the upper surface of the screen is 1 mm.

[0025] Among them, the screen imaging area color detection module 20 uses a multi-angle color measurement sensor, including a multi-angle light source and multiple spectrophotometers connected in series to alternately collect specular reflection and diffused reflection data of multiple points in the screen imaging area, and the reflection data and color coordinates are output from the collected spectrum.

[0026] In a specific example, the multi-angle color measurement sensor used by the screen imaging area color detection module 20 is a dual-angle spectrophotometric color measurement mechanism, using two sets of angles of oblique opposite shooting, such as 8° and 65°, 10° and 45°, 15° and 40°, etc. This solution preferably uses 10° and 45°.

[0027] See Figure 6 , the screen imaging area color detection module 20 performs color acquisition on three points on the diagonal of the screen imaging area.

[0028] The three points include two points near the adjacent endpoints on the diagonal and the midpoint. Of course, the number of points can also be four, five, six, etc. This solution preferably adopts the aforementioned three points.

[0029] The wavelength of the multi-angle light source of the screen imaging area color detection module 20 is 400nm - 700nm.

[0030] Among them, the fixture carrier module 30 adopts a linkage side push-clamp positioning component and is arranged to move back and forth on the longitudinal transfer line 40. The screen end color detection module 10 and the screen imaging area color detection module 20 are arranged on the side of the corresponding longitudinal transfer line 40.

[0031] Specifically, refer to Figure 7 , the fixture carrier module 30 includes a hollow bottom plate 31, a product support hollow suction plate 32, a long-side fixed stop component 33, a short-side fixed stop component 34, a long-side push-clamp positioning component 35, a short-side push-clamp positioning component 36, and a side positioning linkage drive component 37.

[0032] A rectangular hollow opening is provided in the middle of the hollow bottom plate 31. The long side of the product support hollow suction plate 32 is fixed to the long-side plate of the hollow opening of the hollow bottom plate 31 through an extension part.

[0033] Corresponding long-side fixed stop component 33 and short-side fixed stop component 34 are arranged at one long side and one short side of the rectangular hollow opening of the hollow bottom plate 31. Corresponding long-side push-clamp positioning component 35 and short-side push-clamp positioning component 36 are arranged at the other long side and the other short side of the rectangular hollow opening of the hollow bottom plate 31. The long-side push-clamp positioning component 35 and the short-side push-clamp positioning component 36 are driven in a linked manner by the side positioning linkage drive component 37 to realize side push-clamp positioning of the product on the product support hollow suction plate 32.

[0034] A plurality of suction plate hollow openings and suction cups 38 are provided on the product support hollow suction plate 32; a stage leveling component 39 is also arranged on the hollow bottom plate 31.

[0035] Furthermore, the screen color comprehensive detection device further includes a vision pre-positioning module 50. The bearing bottom plate of the fixture carrier module 30 has a hollow design. The vision pre-positioning module 50 performs vision pre-positioning on the screen to be measured on the fixture carrier module 30 from below or above.

[0036] Refer to Figure 8 , the vision pre-positioning module 50 includes a pre-positioning camera 51, a positioning lens 52, a positioning light source 53, and a positioning frame 54. The pre-positioning camera 51 and the positioning lens 52 are connected to the positioning frame 54 through a positioning clamp 55. The positioning light source 53 is transferred to the top of the positioning frame 54 through a light source mounting plate.

[0037] The visual pre-positioning module 50 captures images from bottom to top for visual positioning, which is adapted to the hollow design of the fixture stage module 30.

[0038] Among them, the screen color comprehensive detection device further includes a color calibration module for calibrating the dark balance and white balance of the screen end color detection module 10.

[0039] The color calibration module includes a dark balance calibration component 60 and a white balance calibration component 70; the dark balance calibration component 60 adopts a light trap mechanism, which is located directly below the screen end color detection module 10. During calibration, the light trap mechanism blocks the light inlet of the screen end color detection module 10 to calibrate the dark balance and exclude noise interference. The white balance calibration component 70 adopts a diffuse reflection white board. When in use, the white balance calibration component 70 moves to directly below the screen end color detection module 10, and the light inlet of the screen end color detection module 10 is blocked by the diffuse reflection white board to calibrate its white balance as the reference value of 100% light quantity.

[0040] The screen end color detection module 10 and the screen imaging area color detection module 20 are independently arranged on their own mounting brackets or share a color inspection gantry 80 for support. The screen end color detection module 10 and the screen imaging area color detection module 20 are arranged in a straight line or side by side.

[0041] Figure 1 In an example, two longitudinal transfer lines 40 are arranged side by side, and the screen end color detection module 10 and the screen imaging area color detection module 20 are arranged on the color inspection gantry 80 corresponding to one of the longitudinal transfer lines 40 below respectively.

[0042] The longitudinal transfer line 40, the visual pre-positioning module 50, the dark balance calibration component 60, and the color inspection gantry 80 are arranged on the detection bottom plate 90.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A comprehensive screen color detection device, characterized in that: The screen color comprehensive detection device includes a screen end color detection module (10), a screen imaging area color detection module (20), and a fixture carrier module (30); the screen end color detection module (10) performs color detection on multiple points at the upper end of the screen including IR, BM0, BM, and AR; the screen imaging area color detection module (20) detects the color values of multiple points in the imaging area from multiple angles; the fixture carrier module (30) is used to support and position the screen to be detected.

2. The screen color comprehensive detection device according to claim 1, wherein: The screen end color detection module (10) uses an integrating sphere to cooperate with diffused illumination of 6° - 10°, and performs non-contact color detection on the screen to be measured at a short distance by spectrophotometry.

3. The screen color comprehensive detection device according to claim 1, characterized in that: The screen imaging area color detection module (20) adopts a multi-angle color measurement sensor, including a multi-angle light source and multiple spectrophotometers in-line for alternately collecting specular reflection and diffused reflection data of multiple points in the screen imaging area, and the reflection data and color coordinates are output from the collected spectrum.

4. The screen color comprehensive detection device according to claim 1 or 3, characterized in that: The screen imaging area color detection module (20) collects colors at three points on the diagonal of the screen imaging area.

5. The screen color comprehensive detection device according to claim 1, wherein: The fixture carrier module (30) adopts a linkage side push clamp positioning component and is arranged to reciprocate on the longitudinal transfer line (40), and the screen end color detection module (10) and the screen imaging area color detection module (20) are arranged on the side of the corresponding longitudinal transfer line (40).

6. The screen color comprehensive detection device according to claim 5, characterized in that: The screen color comprehensive detection device further includes a vision pre-positioning module (50). The bearing bottom plate of the fixture carrier module (30) is designed with a hollow. The vision pre-positioning module (50) performs vision pre-positioning on the screen to be detected on the fixture carrier module (30) from below or above.

7. The screen color comprehensive detection device according to claim 1, characterized in that: The screen color comprehensive detection device further includes a color calibration module for calibrating the dark balance and white balance of the screen end color detection module (10).

8. The screen color comprehensive detection device according to claim 5, characterized in that: The screen end color detection module (10) and the screen imaging area color detection module (20) are independently arranged on their own mounting brackets or supported by a shared color inspection gantry (80), and the screen end color detection module (10) and the screen imaging area color detection module (20) are arranged in a straight line or side by side.

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