Method and apparatus for determining compensation parameter of display panel
US-2023069956-A1 · Mar 9, 2023 · US
Grayscale data compensation method and apparatus and driver chip
US11763754B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11763754-B2 |
| Application number | US-202217669600-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 11, 2022 |
| Priority date | Feb 28, 2020 |
| Publication date | Sep 19, 2023 |
| Grant date | Sep 19, 2023 |
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Abstract
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A grayscale data compensation method and apparatus and a driver chip. The grayscale data compensation method includes acquiring an input display brightness instruction value; determining a coefficient variation value corresponding to the input display brightness instruction value according to a relationship in magnitude between the input display brightness instruction value and a range boundary instruction value corresponding to a range boundary; and compensating grayscale data according to the coefficient variation value and a reference compensation coefficient pre-stored under a standard brightness instruction value.
First claim
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What is claimed is: 1. A grayscale data compensation method, comprising: acquiring an input display brightness instruction value, wherein at least two ranges having an interval boundary therebetween are provided between a minimum display brightness instruction value and a maximum display brightness instruction value; determining a coefficient variation value corresponding to the input display brightness instruction value according to a relationship in magnitude between the input display brightness instruction value and an interval boundary instruction value corresponding to the interval boundary, wherein the coefficient variation value is a difference value between a target grayscale compensation coefficient corresponding to the input display brightness instruction value and a reference compensation coefficient under a standard brightness instruction value, wherein the standard brightness instruction value is predetermined; and compensating grayscale data according to the coefficient variation value and the reference compensation coefficient pre-stored under the standard brightness instruction value. 2. The grayscale data compensation method according to claim 1 , wherein determining the coefficient variation value corresponding to the input display brightness instruction value according to the relationship in magnitude between the input display brightness instruction value and the interval boundary instruction value corresponding to the interval boundary comprises: comparing the input display brightness instruction value with the interval boundary instruction value, and when the input display brightness instruction value is equal to the interval boundary instruction value, determining a pre-stored coefficient variation value corresponding to the interval boundary instruction value to be the coefficient variation value corresponding to the input display brightness instruction value. 3. The grayscale data compensation method according to claim 2 , wherein determining the coefficient variation value corresponding to the input display brightness instruction value according to the relationship in magnitude between the input display brightness instruction value and the interval boundary instruction value corresponding to the interval boundary further comprises: when the input display brightness instruction value is greater than a first interval boundary instruction value and less than a second interval boundary instruction value, calculating the coefficient variation value corresponding to the input display brightness instruction value using an interpolation method according to a pre-stored coefficient variation value corresponding to the first interval boundary instruction value and a pre-stored coefficient variation value corresponding to the second interval boundary instruction value; wherein the first interval boundary instruction value and the second interval boundary instruction value are two interval boundary instruction values of a same interval, respectively. 4. The grayscale data compensation method according to claim 3 , wherein when the input display brightness instruction value is greater than the first interval boundary instruction value and less than the second interval boundary instruction value, calculating the coefficient variation value corresponding to the input display brightness instruction value by the interpolation method according to the pre-stored coefficient variation value corresponding to the first interval boundary instruction value and the pre-stored coefficient variation value corresponding to the second interval boundary instruction value comprises: in the case where the input display brightness instruction value is greater than the first interval boundary instruction value and less than the second interval boundary instruction value, calculating the coefficient variation value corresponding to the input display brightness instruction value by the following formula: Coefficientx = Coefficient [ n - 1 ] * ( Now DBV - T H [ k ] ) / ( T H [ k - 1 ] - T H [ k ] ) + Coefficient [ n ] * ( Now DBV - T H [ k - 1 ]
Assignees
Inventors
Classifications
- G09G3/3208Primary
organic, e.g. using organic light-emitting diodes [OLED] · CPC title
- G09G3/3275Primary
Details of drivers for data electrodes · CPC title
Improving the luminance or brightness uniformity across the screen · CPC title
Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping · CPC title
Intensity circuits · CPC title
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- What does patent US11763754B2 cover?
- A grayscale data compensation method and apparatus and a driver chip. The grayscale data compensation method includes acquiring an input display brightness instruction value; determining a coefficient variation value corresponding to the input display brightness instruction value according to a relationship in magnitude between the input display brightness instruction value and a range boundary…
- Who is the assignee on this patent?
- Kunshan Govisionox Optoelectronics Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification G09G3/3208. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Sep 19 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).