# US 12,762,983 B2 · Voltage setting method for display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,762,983 B2 - Document ID: US12762983B2 - Status: Granted - Kind: B2 - Application number: 18/824,428 - Filed: 2024-09-04 - Published: 2025-09-25 - Granted: 2026-10-13 - Earliest claimed: 2024-03-21 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., LTD. - Inventors: Si Beak Pyo - Web page: https://patentgrep.com/patent/US12762983B2 ## CPC - G09G 3/2007: {Display of intermediate tones} - G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element - G09G 2300/0819: used for counteracting undesired variations, e.g. feedback or autozeroing - G09G 2300/0842: forming a memory circuit, e.g. a dynamic memory with one capacitor - G09G 2330/021: Power management, e.g. power saving - G09G 2340/0435: Change or adaptation of the frame rate of the video stream - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) ## Abstract There is provided a voltage-setting method for a display for displaying an image based on a selected maximum luminance among maximum luminances, the voltage-setting method including setting emission duty ratios with respect to the maximum luminances, setting first power voltages with respect to the maximum luminances based on a first maximum luminance, setting black data voltages with respect to the maximum luminances based on a second maximum luminance, and setting difference values of anode initialization voltages and the first power voltages with respect to ones of the maximum luminances other than the second maximum luminance based on a third maximum luminance and a fourth maximum luminance. ## Claims ### Claim 1 A voltage-setting method for a display device for displaying an image based on a selected maximum luminance among maximum luminances, the voltage-setting method comprising: setting emission duty ratios with respect to the maximum luminances; setting first power voltages with respect to the maximum luminances based on a first maximum luminance; setting black data voltages with respect to the maximum luminances based on a second maximum luminance; and setting difference values of anode initialization voltages and the first power voltages with respect to ones of the maximum luminances other than the second maximum luminance based on a third maximum luminance and a fourth maximum luminance, wherein the setting the emission duty ratios, the setting the first power voltages, the setting black data voltages, and the setting the difference values are sequentially performed. ### Claim 2 (depends on 1) The voltage-setting method of claim 1, wherein the second maximum luminance, the third maximum luminance, and the fourth maximum luminance are different. ### Claim 3 (depends on 2) The voltage-setting method of claim 2, wherein the second maximum luminance is greater than each of the third maximum luminance and the fourth maximum luminance. ### Claim 4 (depends on 3) The voltage-setting method of claim 3, wherein the second maximum luminance is a maximum value among the maximum luminances. ### Claim 5 (depends on 3) The voltage-setting method of claim 3, further comprising setting a same first power voltage with respect to ones of the maximum luminances that are less than or equal to the third maximum luminance. ### Claim 6 (depends on 5) The voltage-setting method of claim 5, further comprising setting a same emission duty ratio with respect to ones of the maximum luminances that are greater than or equal to the third maximum luminance. ### Claim 7 (depends on 6) The voltage-setting method of claim 6, further comprising setting at least one maximum luminance, for which a smallest one of the emission duty ratios is set, as the fourth maximum luminance. ### Claim 8 (depends on 7) The voltage-setting method of claim 7, further comprising setting a largest one of the at least one maximum luminance as the fourth maximum luminance. ### Claim 9 A voltage-setting method for a display device for displaying an image based on a selected maximum luminance among maximum luminances, the voltage-setting method comprising: setting emission duty ratios with respect to the maximum luminances; setting first power voltages with respect to the maximum luminances based on a first maximum luminance; setting black data voltages with respect to the maximum luminances based on a second maximum luminance; setting difference values of anode initialization voltages and the first power voltages with respect to ones of the maximum luminances other than the second maximum luminance based on a third maximum luminance and a fourth maximum luminance; setting a same first power voltage with respect to ones of the maximum luminances that are less than or equal to the third maximum luminance; setting a same emission duty ratio with respect to ones of the maximum luminances that are greater than or equal to the third maximum luminance; setting at least one maximum luminance, for which a smallest one of the emission duty ratios is set, as the fourth maximum luminance; setting first difference values with respect to maximum luminances that are less than the second maximum luminance and that are greater than the third maximum luminance; and performing first interpolation using a difference value set with respect to the second maximum luminance and a difference value set with respect to the third maximum luminance, wherein the second maximum luminance is greater than the third maximum luminance and is greater than the fourth maximum luminance, and the third maximum luminance and the fourth maximum luminance are different. ### Claim 10 (depends on 9) The voltage-setting method of claim 9, wherein the first interpolation is performed such that a difference between the first difference values is proportional to a difference between first power voltages with respect to corresponding maximum luminances. ### Claim 11 (depends on 10) The voltage-setting method of claim 10, further comprising: setting second difference values with respect to maximum luminances less than the third maximum luminance and greater than the fourth maximum luminance; and performing second interpolation using a difference value set with respect to the third maximum luminance and a difference value set with respect to the fourth maximum luminance. ### Claim 12 (depends on 11) The voltage-setting method of claim 11, wherein the second interpolation is performed such that a difference between the second difference values is proportional to a difference between emission duty ratios with respect to corresponding maximum luminances. ### Claim 13 (depends on 1) The voltage-setting method of claim 1, further comprising: selecting a difference value of an anode initialization voltage and a first power voltage with respect to the second maximum luminance; repeatedly testing test black data voltages based on the difference value with respect to the second maximum luminance; setting a black data voltage with respect to the second maximum luminance; and displaying a black image. ### Claim 14 (depends on 13) The voltage-setting method of claim 13, further comprising: applying offsets based on the black data voltage with respect to the second maximum luminance; and setting black data voltages with respect to other ones of the maximum luminances. ### Claim 15 (depends on 14) The voltage-setting method of claim 14, further comprising: repeatedly testing test difference values based on a black data voltage set with respect to the third maximum luminance; setting a difference value with respect to the third maximum luminance; and displaying a black image. ### Claim 16 (depends on 15) The voltage-setting method of claim 15, further comprising: repeatedly testing test difference values based on a black data voltage set with respect to the fourth maximum luminance; setting a difference value with respect to the fourth maximum luminance; and displaying a black image. ### Claim 17 A voltage-setting method for a display device for displaying an image based on a selected maximum luminance among maximum luminances, the voltage-setting method comprising: setting emission duty ratios with respect to the maximum luminances; setting first power voltages with respect to the maximum luminances based on a first maximum luminance; setting black data voltages with respect to the maximum luminances based on a second maximum luminance; setting difference values of anode initialization voltages and the first power voltages with respect to ones of the maximum luminances other than the second maximum luminance based on a third maximum luminance and a fourth maximum luminance; selecting a difference value of an anode initialization voltage and a first power voltage with respect to the second maximum luminance; repeatedly testing test black data voltages based on the difference value with respect to the second maximum luminance; setting a black data voltage with respect to the second maximum luminance; displaying a black image; applying offsets based on the black data voltage with respect to the second maximum luminance; setting black data voltages with respect to other ones of the maximum luminances; repeatedly testing test difference values based on a black data voltage set with respect to the third maximum luminance; setting a difference value with respect to the third maximum luminance; displaying a black image; repeatedly testing test difference values based on a black data voltage set with respect to the fourth maximum luminance; setting a difference value with respect to the fourth maximum luminance; displaying a black image; setting first difference values with respect to maximum luminances that are less than the second maximum luminance and that are greater than the third maximum luminance; and performing first interpolation using the difference value set with respect to the second maximum luminance and the difference value set with respect to the third maximum luminance such that a difference between the first difference values is in proportion to a difference between first power voltages with respect to corresponding maximum luminances. ### Claim 18 (depends on 17) The voltage-setting method of claim 17, further comprising: setting second difference values with respect to maximum luminances less than the third maximum luminance and greater than the fourth maximum luminance; and performing second interpolation using the difference value set with respect to the third maximum luminance and the difference value set with respect to the fourth maximum luminance, wherein the second interpolation is performed such that a difference between the second difference values is in proportion to a difference between emission duty ratios with respect to corresponding maximum luminances. ### Claim 19 (depends on 1) The voltage-setting method of claim 1, wherein the first maximum luminance, the second maximum luminance, the third maximum luminance, and the fourth maximum luminance are different. ### Claim 20 (depends on 19) The voltage-setting method of claim 19, wherein the second maximum luminance is greater than each of the first maximum luminance, the third maximum luminance, and the fourth maximum luminance.