Test method for afterimage of display device
A technology of display device and test method, applied to static indicators, instruments, etc., which can solve problems such as brightness masking, increased difficulty of data analysis, and easy misjudgment
Active Publication Date: 2021-07-06
TRULY HUIZHOU SMART DISPLAY
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] Based on this, it is necessary to focus on the fact that when testing the afterimage of the display device, due to the influence of power supply noise, there is a certain fluctuation in the change of brightness, which leads to the fact that the brightness of the test is covered by the noise, the difficulty of data analysis increases, and it is easy to cause misjudgment. Technical problem, provide a test method for afterimage of display device
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0034] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.
[0035] In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be interpreted as indicating or implying relative importance or implicitly specifying the quantity of indicated technical features. Thus, the features defined as "first" and "second" may ...
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
Login to View More Abstract
A method for testing residual images of a display device, comprising: controlling a first test area to display a first picture within a time period of t1 to t2, controlling a second test area to display a second picture, and controlling a first test area to display a second picture within a time period of t2 to t3. Both the first test area and the second test area display the first picture; respectively collect the change value L1(t) of the brightness L1 of the first test area with time within t1~t3, and the test parameter Y2 of the second test area within t1~t3 The change value of time Y2(t); according to C(t)=Y2(t)-K*L1(t), calculate the change value C of the afterimage parameter C over time after noise removal within the time period of t1~t3 (t) value. Since the difference between Y2(t) and KL1(t) just removes the noise, the value of C(t) is the value after removing the noise, so that the afterimage test result will not be affected by the noise.
Description
technical field [0001] The invention relates to the field of display technology, in particular to a test method for image sticking of a display device. Background technique [0002] In order to improve the performance and quality of the display device, during the production process, it is necessary to detect and evaluate performance indicators such as resolution, brightness, contrast, color gamut, response time, and afterimage level of the display device. Here, the afterimage refers to image retention. Specifically, when the display device drives a specific still picture for a long time, the thin film transistors therein are affected by bias stress or the brightness of the light-emitting diodes therein is attenuated, causing the luminous brightness of the display device to change, thus causing the display panel to display images When there is a difference, for example, when the display screen is switched to the next screen, the image of the previous screen will remain on th...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/00
CPCG09G3/006
Inventor 阮伟文张家朝吴锦坤胡君文谢志生苏君海李建华
Owner TRULY HUIZHOU SMART DISPLAY