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Compensation method and display method of display panel

A display panel and compensation method technology, applied to static indicators, instruments, etc., can solve the problems of compensation data error, long-term uniformity difference, unsatisfactory compensation effect, and inability to faithfully reflect the brightness distribution of the display panel, etc.

Active Publication Date: 2021-12-28
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the presence of vignetting or other factors when the camera takes pictures, the brightness distribution of the display panel cannot be faithfully reflected
When using the existing compensation formula to calculate the Demura compensation data, there are errors in the compensation data, which makes the compensation effect for poor long-range uniformity unsatisfactory

Method used

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  • Compensation method and display method of display panel
  • Compensation method and display method of display panel
  • Compensation method and display method of display panel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In an existing display device, the cross-sectional area of ​​the power supply wiring inside the display panel is usually relatively small, which will inevitably generate a certain impedance. When the display panel is lit, a voltage drop occurs in the drive signal from the input near end to the far end, resulting in a reduction in the brightness of the input far end. Especially when displaying high-gray-scale images, due to the large current of the driving signal, the voltage drop caused by the impedance of the power supply traces has a relatively large change range, which will cause the brightness display of the entire display panel to be more uneven, causing the display The long-range uniformity of the panel is even worse. Similarly, for large-size and high-resolution products, due to the longer power supply trace length, the total impedance is also larger, so the display screen defects are also more serious.

[0034] In the case that the impedance of the power supply...

Embodiment 2

[0053] This embodiment provides a compensation method for a display panel, which can be used to compensate the long-range uniformity of the display panel. The compensation method provided in this embodiment is similar to the compensation method provided in Embodiment 1, and the long-range uniformity of the display panel is also improved by adjusting the coefficient of the compensation parameter in the optical compensation function.

[0054] Similar to Embodiment 1, the compensation method provided in this embodiment may also include the following steps:

[0055] S21. Acquire compensation parameters in an initial optical compensation function corresponding to each pixel unit of the display panel.

[0056] S22. Adjust the coefficients of the compensation parameters of some pixel units according to the position information of the pixel units in the display panel and according to a preset algorithm.

[0057] S23. Determine an adjusted optical compensation function corresponding t...

Embodiment 3

[0066] This embodiment provides a compensation method for a display panel, which can be used to compensate the long-range uniformity of the display panel. The compensation method provided in this embodiment is similar to the compensation method provided in Embodiment 1, and the long-range uniformity of the display panel is also improved by adjusting the coefficient of the compensation parameter in the optical compensation function.

[0067] Similar to Embodiment 1, the compensation method provided in this embodiment may also include the following steps:

[0068] S31. Obtain compensation parameters in an initial optical compensation function corresponding to each pixel unit of the display panel.

[0069] S32. Adjust the coefficients of the compensation parameters of some pixel units according to the position information of the pixel units in the display panel and according to a preset algorithm.

[0070] S33. Determine an adjusted optical compensation function corresponding to...

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Abstract

The invention provides a compensation method and a display method of a display panel, which belong to the field of display technology and can solve the problem of poor long-range uniformity of the existing OLED display panel. The compensation method of the display panel of the present invention is used to compensate the long-range uniformity of the display panel. The compensation method includes: obtaining the compensation parameters in the initial optical compensation function corresponding to each pixel unit of the display panel; The position information of the unit in the display panel, and adjust the coefficients of the compensation parameters of some of the pixel units according to the preset algorithm; according to the adjusted compensation parameter coefficients, determine the adjusted optical parameters corresponding to each pixel unit A compensation function, to compensate the long-range uniformity of the display panel according to the adjusted optical compensation function.

Description

technical field [0001] The invention belongs to the field of display technology, and in particular relates to a compensation method and a display method of a display panel. Background technique [0002] With the development of display technology, OLED (Organic Light-Emitting Diode; organic electroluminescent display) display device has become the new darling of flat panel display device at present, and it has many advantages such as self-illumination, fast response speed, wide viewing angle, etc. Applications. Brightness uniformity is an important factor affecting the display effect of the display screen. At present, display screen manufacturers are required to introduce Long Range Uniformity (LRU) of display screen brightness to evaluate the performance of the display screen. [0003] When the OLED display panel is lit, there is a voltage drop (IR-drop) in the driving signal (ELVDD) from the input near-end to the far-end, resulting in a decrease in brightness, which will c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/3208
CPCG09G3/3208G09G2320/0233
Inventor 韩婷王斌李贵鹏
Owner BOE TECH GRP CO LTD