A display module residual image quantification test device
By utilizing the design of the occlusion and switching components, the display module afterimage quantification test device solves the problem that human judgment of afterimage is easily affected by ambient light and visual perception. It realizes the accuracy of brightness measurement and the quantitative evaluation of afterimage level, and improves the objectivity and comprehensiveness of the detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TRULY OPTO ELECTRONICS
- Filing Date
- 2025-06-30
- Publication Date
- 2026-07-14
AI Technical Summary
Human judgment of display module afterimages is easily affected by ambient light and individual visual perception, leading to differences in judgment results.
A display module afterimage quantification test device is adopted. The screen is covered by a blocking component and a through hole is left for brightness measurement. Combined with a switching component, the center position of the black and white boundary is tested. A luminance meter and an optical test probe are used for quantitative evaluation.
It effectively shields against external light interference, ensuring accurate measurement data, improving the comprehensiveness and objectivity of detection, quantifying the level of image retention, and reducing human error in judgment.
Smart Images
Figure CN224499893U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of display module image retention quantification testing technology, and more specifically, to a display module image retention quantification testing device. Background Technology
[0002] Image retention testing is one of the important indicators for evaluating the optical performance of display modules. For example... Figure 1 As shown, display module ghosting tests typically involve dividing the screen into an 8×8 grid both horizontally and vertically. A black and white checkerboard pattern is then displayed for one hour, followed by a switch to a 127 grayscale display to observe and determine if ghosting exists in the checkerboard area. Currently, ghosting determination relies primarily on manual visual inspection, categorized into different levels based on the severity of the residual image, such as L0 (no ghosting), L1 (slight ghosting), L2 (moderate ghosting), and L3 (severe ghosting). However, human judgment is easily affected by ambient light and individual differences in visual perception, leading to variations in the results. Utility Model Content
[0003] The technical problem to be solved by the embodiments of this application is that, when testing display modules, human judgment is easily affected by ambient light and individual differences in visual perception, which can lead to differences in judgment results.
[0004] To address the aforementioned technical problems, this application provides a display module afterimage quantification testing device, which employs the following technical solution:
[0005] A display module afterimage quantization testing device, comprising:
[0006] A lower fixture is provided above an upper fixture b, and an upper fixture a is fixedly connected to one side of the upper fixture b;
[0007] A shielding component is disposed between the lower fixture and the upper fixture b, the shielding component including: a through hole b, a partition grid a and an optical test probe;
[0008] The switching component is located on the top of the lower fixture and includes: an upper fixture a, a through hole a, a partition b, a knob, a threaded rod, a support block, and a limiting block.
[0009] Furthermore, the lower fixture has a placement cavity inside, and the lower fixture is made of acrylic material.
[0010] Furthermore, a display module body is placed inside the placement cavity, a slot is opened on one side of the placement cavity, and a main screen FPC is connected to one side of the display module body.
[0011] Furthermore, the lower fixture has screw holes at all four corners of its top, the upper fixture b has positioning screw holes b at all four corners of its top, the upper fixture b has multiple partitions a at its top, and the upper fixture b has multiple knobs at its top.
[0012] Furthermore, the positioning screw hole b corresponds to the position of the screw hole, and a through hole b is opened in the center of each of the multiple partitions a.
[0013] Furthermore, a threaded rod is fixedly connected to the top of the knob, and the bottom end of the threaded rod is threadedly connected to the positioning screw hole b and the screw hole.
[0014] Furthermore, the upper fixture b is made of acrylic material, and a luminance meter is provided on one side of the lower fixture. An optical test probe is connected to one side of the luminance meter via a cable.
[0015] Furthermore, two connecting blocks are fixedly connected to one side of the lower fixture, and the upper fixture a is made of acrylic material.
[0016] Furthermore, a support block is fixedly connected to the top of the connecting block, and a limit block is fixedly connected to the top of the support block.
[0017] Furthermore, the upper fixture a has multiple partitioned grids b on its top, and a through hole a is opened at the center of the intersection of every two partitioned grids b. Multiple positioning screw holes a are opened at the four corners of the top of the through hole a.
[0018] Compared with the prior art, the embodiments of this application have the following main advantages:
[0019] Among them, by setting the covering component, the upper fixture can cover the entire screen area, leaving only the through hole for brightness measurement, effectively shielding external light interference and ensuring that the measurement data reflects the true brightness value of the display module itself. Secondly, by switching the component settings, it is convenient to test the center position of the black and white boundary, improving the comprehensiveness of the detection. Attached Figure Description
[0020] To more clearly illustrate the solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0022] Figure 2 This is a half-sectional view of the overall structure of this utility model.
[0023] Figure 3 This is a top view of the lower fixture structure of this utility model.
[0024] Figure 4 This is a top view of the support block structure of this utility model.
[0025] Figure 5 This is a schematic diagram of the upper fixture b structure of this utility model.
[0026] Figure 6 This is a top view of the overall structure of this utility model.
[0027] Figure 7 This is a top view of the upper fixture a structure of this utility model.
[0028] Figure 8 For the present utility model Figure 2 Enlarged view of point A in the image.
[0029] Reference numerals: 1. Lower fixture; 101. Placement cavity; 102. Display module body; 103. Slot; 104. Screw hole; 105. Main screen FPC; 2. Connecting block; 201. Support block; 202. Limiting block; 203. Upper fixture a; 204. Positioning screw hole a; 205. Through hole a; 206. Partition grid a; 207. Partition grid b; 3. Upper fixture b; 301. Through hole b; 302. Positioning screw hole b; 4. Knob; 401. Threaded rod; 5. Luminometer; 501. Optical test probe. Detailed Implementation
[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings of this application are used to distinguish different objects, not to describe a particular order.
[0031] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0032] This application provides a display module afterimage quantification testing device, including: a lower fixture 1, an upper fixture b3 above the lower fixture 1, and an upper fixture a203 fixedly connected to one side of the upper fixture b3; a shielding component disposed between the lower fixture 1 and the upper fixture b3, the shielding component including: a through hole b301, a partition grid a206 and an optical test probe 501; and a switching component disposed on the top of the lower fixture 1, the switching component including: the upper fixture a203, the through hole a205, the partition grid b207, a knob 4, a threaded rod 401, a support block 201 and a limiting block 202.
[0033] By setting up the shielding components, the upper fixture a203 or upper fixture b3 can cover the entire screen area of the display module body 102, leaving only the through hole a205 or through hole b301 for brightness measurement. This effectively shields against external light interference, ensuring that the measurement data reflects the true brightness value of the display module body 102 itself. By setting up the switching components, the upper fixture a203 and upper fixture b3 can be switched, facilitating the testing of the center position of the black-and-white boundary and improving the comprehensiveness of the test.
[0034] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0035] This application displays an embodiment of the module afterimage quantization testing device.
[0036] A display module afterimage quantification testing device includes: a lower fixture 1, an upper fixture b3 above the lower fixture 1, and an upper fixture a203 fixedly connected to one side of the upper fixture b3; a shielding component disposed between the lower fixture 1 and the upper fixture b3, the shielding component including: a through hole b301, a partition grid a206 and an optical test probe 501; and a switching component disposed on the top of the lower fixture 1, the switching component including: the upper fixture a203, the through hole a205, the partition grid b207, a knob 4, a threaded rod 401, a support block 201 and a limiting block 202.
[0037] By setting up the shielding component, the upper fixture a203 or upper fixture b3 can cover the entire screen area of the display module body 102, leaving only the through hole a205 or through hole b301 for brightness measurement. This effectively shields against external light interference, ensuring that the measurement data reflects the true brightness value of the display module body 102 itself. By setting up the switching component, the upper fixture a203 and upper fixture b3 can be switched, which facilitates the testing of the center position of the black and white boundary and improves the comprehensiveness of the test.
[0038] This application displays a second embodiment of the module afterimage quantization testing device.
[0039] Based on Embodiment 1, the lower fixture 1 has a placement cavity 101 inside, and the lower fixture 1 is made of acrylic material; the display module body 102 is placed inside the placement cavity 101, and a slot 103 is opened on one side of the placement cavity 101, and a main screen FPC 105 is connected to one side of the display module body 102; screw holes 104 are opened at the four corners of the top of the lower fixture 1, and positioning screw holes b302 are opened at the four corners of the top of the upper fixture b3; the top of the upper fixture b3 has multiple partitions a206, and the top of the upper fixture b3 has multiple rotating... Button 4; the positioning screw hole b302 corresponds to the screw hole 104, and a through hole b301 is opened in the center of each of the multiple partitions a206; a threaded rod 401 is fixedly connected to the top of the knob 4, and the bottom end of the threaded rod 401 is threadedly connected to the positioning screw hole b302 and the screw hole 104; the upper fixture b3 is made of acrylic material, and a luminance meter 5 is provided on one side of the lower fixture 1. An optical test probe 501 is connected to one side of the luminance meter 5 via a cable; two connecting blocks 2 are fixedly connected to one side of the lower fixture 1, and the upper fixture a203 is made of acrylic material.
[0040] In use, the display module body 102 is placed inside the placement cavity 101, so that the main screen FPC 105 is placed in the slot 103 and extends out of the outer side of the lower fixture 1. Then, the upper fixture b3 is placed on top of the lower fixture 1, so that the positioning screw hole b302 is aligned with the screw hole 104. Then, the threaded rod 401 is aligned with the positioning screw hole b302, and the knob 4 is turned to screw the threaded rod 401 into the screw hole 104, fixing the upper fixture b3 to the top of the lower fixture 1. Then, the main screen FPC 105 is fastened to the dotted screen fixture, the power is turned on, the display module body 102 is lit, and the screen is switched to 127 grayscale. The luminance meter 5 measures the luminance value L0 of each through-hole b301 point through the optical test probe 501. Then, the screen is switched to an 8*8 black and white checkerboard pattern and lit for 1 hour. Then, the screen is switched to a 127 gray screen, and the luminance value L1 of each through-hole b301 point is measured through the luminance meter 5 and the optical test probe 501. Then, according to the calculation formula Y=ABS[(L1-L0) / L0], the afterimage value Y1-Y64 of different points is calculated. At this time, different thresholds can be set to correspond to different levels of afterimage, and the afterimage standard can be quantified by the change in brightness value, so that the afterimage judgment is more objective and accurate.
[0041] In addition, the luminance meter 5 is a screen luminance meter of model ST-86LA.
[0042] This application displays a third embodiment of the module afterimage quantization testing device.
[0043] Based on Embodiment 1, a support block 201 is fixedly connected to the top of the connecting block 2, and a limit block 202 is fixedly connected to the top of the support block 201; the top of the upper fixture a203 is provided with multiple partition grids b207, and multiple positioning screw holes a204 are opened at the center of the intersection of two partition grids b207.
[0044] When it is necessary to test the center position of the black and white boundary, the knob 4 can be turned to unscrew the threaded rod 401, releasing the upper fixture b3 and the lower fixture 1 from the fixation. Then, the upper fixture b3 and the upper fixture a203 are flipped over, and the upper fixture a203 is placed on top of the lower fixture 1. Then, one side of the upper fixture b3 is placed against the side of the limiting block 202. At this time, the positioning screw hole a204 on the top of the upper fixture a203 is aligned with the screw hole 104 on the top of the lower fixture 1. Then, the threaded rod 401 is screwed into the positioning screw hole a204 and the screw hole 104 to fix the upper fixture a203 to the top of the lower fixture 1. Then, the test can be performed through the luminance meter 5 and the optical test probe 501.
[0045] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0046] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.
Claims
1. A device for quantifying image retention in display modules, characterized in that, include: The lower fixture (1) is provided with an upper fixture b (3) above the lower fixture (1), and an upper fixture a (203) is fixedly connected to one side of the upper fixture b (3). A shielding assembly is disposed between the lower fixture (1) and the upper fixture b (3), the shielding assembly comprising: a through hole b (301), a partition grid a (206) and an optical test probe (501). The switching component is located on the top of the lower fixture (1). The switching component includes: upper fixture a (203), through hole a (205), partition grid b (207), knob (4), threaded rod (401), support block (201) and limit block (202).
2. The display module ghosting quantization testing device according to claim 1, characterized in that, The lower fixture (1) has a placement cavity (101) inside, and the lower fixture (1) is made of acrylic material.
3. The display module ghosting quantization testing device according to claim 2, characterized in that, The placement cavity (101) contains a display module body (102), and a slot (103) is provided on one side of the placement cavity (101). A main screen FPC (105) is connected to one side of the display module body (102).
4. The display module ghosting quantization testing device according to claim 1, characterized in that, The lower fixture (1) has screw holes (104) at all four corners of its top, the upper fixture b (3) has positioning screw holes b (302) at all four corners of its top, the upper fixture b (3) has multiple partitions a (206) at its top, and the upper fixture b (3) has multiple knobs (4) at its top.
5. The display module ghosting quantization testing device according to claim 4, characterized in that, The positioning screw hole b (302) corresponds to the screw hole (104) in position, and a through hole b (301) is opened in the center of the interior of each of the multiple partition grids a (206).
6. The display module ghosting quantization testing device according to claim 4, characterized in that, The top of the knob (4) is fixedly connected to a threaded rod (401), and the bottom end of the threaded rod (401) is threadedly connected to the positioning screw hole b (302) and the screw hole (104).
7. The display module ghosting quantization testing device according to claim 1, characterized in that, The upper fixture b (3) is made of acrylic material, and a luminance meter (5) is provided on one side of the lower fixture (1). An optical test probe (501) is connected to one side of the luminance meter (5) via a cable.
8. The display module ghosting quantization testing device according to claim 1, characterized in that, The lower fixture (1) has two connecting blocks (2) fixedly connected to one side, and the upper fixture a (203) is made of acrylic material.
9. The display module ghosting quantization testing device according to claim 8, characterized in that, The top of the connecting block (2) is fixedly connected to a support block (201), and the top of the support block (201) is fixedly connected to a limit block (202).
10. The display module ghosting quantization testing device according to claim 1, characterized in that, The upper fixture a (203) has multiple partition grids b (207) on its top. A through hole a (205) is opened at the center of the intersection of two partition grids b (207). Multiple positioning screw holes a (204) are opened at the four corners of the top of the through hole a (205).