Prosecution Insights
Last updated: October 26, 2026
Application No. 19/339,448

DISPLAY DEVICE WITH VARIABLE REFRESH RATE, AN ELECTRONIC DEVICE, AND METHOD OF DRIVING THE SAME

Non-Final OA §103
Filed
Sep 25, 2025
Priority
Dec 05, 2024 — RE 10-2024-0179671
Examiner
YEUNG, MATTHEW
Art Unit
2621
Tech Center
2600 — Communications
Assignee
Samsung Display Co., Ltd.
OA Round
1 (Non-Final)
74%
Grant Probability
Favorable
1-2
OA Rounds
1y 6m
Est. Remaining
84%
With Interview

Examiner Intelligence

Grants 74% — above average
74%
Career Allowance Rate
393 granted / 528 resolved
+12.4% vs TC avg
Moderate +9% lift
Without
With
+9.1%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
11 currently pending
Career history
550
Total Applications
across all art units

Statute-Specific Performance

§101
2.5%
-37.5% vs TC avg
§103
62.2%
+22.2% vs TC avg
§102
13.6%
-26.4% vs TC avg
§112
18.1%
-21.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 528 resolved cases

Office Action

§103
Notice of Pre-AIA or AIA Status The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . Claim Rejections - 35 USC § 103 In the event the determination of the status of the application as subject to AIA 35 U.S.C. 102 and 103 (or as subject to pre-AIA 35 U.S.C. 102 and 103) is incorrect, any correction of the statutory basis (i.e., changing from AIA to pre-AIA ) for the rejection will not be considered a new ground of rejection if the prior art relied upon, and the rationale supporting the rejection, would be the same under either status. The following is a quotation of 35 U.S.C. 103 which forms the basis for all obviousness rejections set forth in this Office action: A patent for a claimed invention may not be obtained, notwithstanding that the claimed invention is not identically disclosed as set forth in section 102, if the differences between the claimed invention and the prior art are such that the claimed invention as a whole would have been obvious before the effective filing date of the claimed invention to a person having ordinary skill in the art to which the claimed invention pertains. Patentability shall not be negated by the manner in which the invention was made. Claim(s) 1, 2, 10, 11, 18, and 19 is/are rejected under 35 U.S.C. 103 as being unpatentable over Lee (US App. 20230148307) in view of Kim et al. (US App. 20230104328). In regard to claim 1, Lee teaches a display device (see at least Abstract), comprising: a display panel including a pixel (see Fig. 1, PX); and a controller configured to receive input grayscale and refresh rate data and generate output grayscales based on an input grayscale and a refresh rate, and transmit the output grayscales to a data driver (see at least Figs. 1 and 4, and Para. 6, 57-60), wherein, when the refresh rate changes from a low frequency to a higher frequency (see Fig. 4, and Para. 10-16 and 60 variable frequency compensation includes increasing luminance with higher frequency and decrease luminance with lower frequency). Lee is not relied upon to teach an output grayscale higher than the input grayscale is sent to the pixel through the data driver. However, Kim teaches an output grayscale higher than the input grayscale is sent to the pixel through the data driver (See Figs. 1, 5, 6, and Para. 109). It would have been obvious to a person of ordinary skill in the art to modify the display of Lee to include the overdriving of Kim to change refresh rate with the frame frequency. Examiner also notes Lee discloses the base product/process of data grayscale compensation while Kim teaches the known technique of higher values for higher frequencies so as to yield predictable results of higher grayscale for designated frequencies in the device of Lee. In regard to claim 10, Lee teaches a method of driving a display device (see at least Abstract), the method comprising: receiving input grayscale and refresh rate data; generating output grayscales based on an input grayscale and a refresh rate (see at least Figs. 1 and 4, and Para. 6, 57-60); and transmitting the output grayscales to a data driver (See Fig. 4); wherein, when the refresh rate of the display device changes from a low frequency to a higher frequency (see Fig. 4, and Para. 10-16 and 60 variable frequency compensation includes increasing luminance with higher frequency and decrease luminance with lower frequency). Lee is not relied upon to teach an output grayscale higher than the input grayscale is sent to a pixel through the data driver. However, Kim teaches an output grayscale higher than the input grayscale is sent to a pixel through the data driver (See Figs. 1, 5, 6, and Para. 109). It would have been obvious to a person of ordinary skill in the art to modify the display of Lee to include the overdriving of Kim to change refresh rate with the frame frequency. Examiner also notes Lee discloses the base product/process of data grayscale compensation while Kim teaches the known technique of higher values for higher frequencies so as to yield predictable results of higher grayscale for designated frequencies in the device of Lee. In regard to claim 18, Lee teaches an electronic device (see at least Abstract), comprising: a display device configured to display an image (see Fig. 1); a processor configured to provide an input grayscale to the display device (see Fig. 1); and a power module configured to supply power to the display device and the processor, wherein the display device comprises: a display panel including a pixel (see Fig. 1, PX); and a controller configured to receive input grayscale and refresh rate data and generate output grayscales based on an input grayscale and a refresh rate, and transmit the output grayscales to a data driver (see at least Figs. 1 and 4, and Para. 6, 57-60) wherein, when the refresh rate of the display panel changes from a low frequency to a higher frequency (see Fig. 4, and Para. 10-16 and 60 variable frequency compensation includes increasing luminance with higher frequency and decrease luminance with lower frequency). Lee is not relied upon to teach an output grayscale higher than the input grayscale is sent to the pixel through the data driver. However, Kim teaches an output grayscale higher than the input grayscale is sent to the pixel through the data driver (See Figs. 1, 5, 6, and Para. 109). It would have been obvious to a person of ordinary skill in the art to modify the display of Lee to include the overdriving of Kim to change refresh rate with the frame frequency. Examiner also notes Lee discloses the base product/process of data grayscale compensation while Kim teaches the known technique of higher values for higher frequencies so as to yield predictable results of higher grayscale for designated frequencies in the device of Lee. Regarding claim 2, Lee in view of Kim teaches all the limitations of claim 1. Lee further teaches wherein, when the refresh rate changes from the low frequency to the higher frequency and a frequency difference between the higher frequency and the low frequency is greater than or equal to a reference frequency difference value (see Fig. 4, and Para. 10-16 and 60 variable frequency compensation includes increasing luminance with higher frequency and decrease luminance with lower frequency). Lee is not relied upon to teach the output grayscale higher than the input grayscale is sent to the pixel through the data driver. However, Kim teaches the output grayscale higher than the input grayscale is sent to the pixel through the data driver (See Figs. 1, 5, 6, and Para. 109). It would have been obvious to a person of ordinary skill in the art to modify the display of Lee to include the overdriving of Kim to change refresh rate with the frame frequency. Examiner also notes Lee discloses the base product/process of data grayscale compensation while Kim teaches the known technique of higher values for higher frequencies so as to yield predictable results of higher grayscale for designated frequencies in the device of Lee. Regarding claim 11, Lee in view of Kim and Sang teaches all the limitations of Claim 10. Lee further teaches further comprising: determining a change in the refresh rate based on a vertical synchronization signal or a frequency change signal (see Para. 53 VIFF). Regarding claim 19, Lee in view of Kim and Sang teaches all the limitations of Claim 18. Lee further teaches wherein, when the refresh rate changes from the low frequency to the higher frequency and a frequency difference between the higher frequency and the low frequency is greater than or equal to a reference frequency difference value (see Fig. 4, and Para. 10-16 and 60 variable frequency compensation includes increasing luminance with higher frequency and decrease luminance with lower frequency). Lee is not relied upon to teach the output grayscale higher than the input grayscale is sent to the pixel through the data driver. However, Kim teaches the output grayscale higher than the input grayscale is sent to the pixel through the data driver (See Figs. 1, 5, 6, and Para. 109). It would have been obvious to a person of ordinary skill in the art to modify the display of Lee to include the overdriving of Kim to change refresh rate with the frame frequency. Examiner also notes Lee discloses the base product/process of data grayscale compensation while Kim teaches the known technique of higher values for higher frequencies so as to yield predictable results of higher grayscale for designated frequencies in the device of Lee. Claim(s) 3, 9, 12, is/are rejected under 35 U.S.C. 103 as being unpatentable over Lee (US App. 20230148307) in view of Kim et al. (US App. 20230104328) in further view of Sang et al. (US App. 20230097941). Regarding claim 3, Lee in view of Kim teaches all the limitations of Claim 1. Lee further teaches wherein, when the refresh rate changes from the low frequency to the higher frequency (see Fig. 4, and Para. 10-16 and 60 variable frequency compensation includes increasing luminance with higher frequency and decrease luminance with lower frequency). Lee and Kim are not relied upon to teach and the input grayscale is less than or equal to a reference grayscale, the output grayscale higher than the input grayscale is sent to the pixel through the data driver. However, Sang teaches and the input grayscale is less than or equal to a reference grayscale, the output grayscale higher than the input grayscale is sent to the pixel through the data driver (see Para. 242 comparing grayscale). It would have been obvious to a person of ordinary skill in the art to modify the display of Lee to include the overdriving of Kim and the grayscale comparison of Sang for improved display response (See Para. 6). Regarding claim 9, Lee in view of Kim teaches all the limitations of Claim 1. Lee further teaches wherein the controller includes:a frequency change determiner configured to determine a change in the refresh rate based on a vertical synchronization signal or a frequency change signal (see Para. 53 VIFF); a frequency difference comparator configured to compare a frequency difference between the higher frequency and the low frequency with a reference frequency difference value (see Para. 64 reference frequency). Lee and Kim are not relied upon to teach and an input grayscale comparator configured to compare the input grayscale with a reference grayscale. However, Sang teaches and an input grayscale comparator configured to compare the input grayscale with a reference grayscale (see Para. 242 comparing grayscale). It would have been obvious to a person of ordinary skill in the art to modify the display of Lee to include the overdriving of Kim and the grayscale comparison of Sang for improved display response (See Para. 6). Regarding claim 12, Lee in view of Kim teaches all the limitations of Claim 10. Lee further teaches comparing a frequency difference between the higher frequency and the low frequency with a reference frequency difference value (see Fig. 4, and Para. 10-16 and 60 variable frequency compensation includes increasing luminance with higher frequency and decrease luminance with lower frequency and Para. 53 VIFF). Lee and Kim are not relied upon to teach and comparing the input grayscale with a reference grayscale. However, Sang teaches and comparing the input grayscale with a reference grayscale (see Para. 242 comparing grayscale). It would have been obvious to a person of ordinary skill in the art to modify the display of Lee to include the overdriving of Kim and the grayscale comparison of Sang for improved display response (See Para. 6). Allowable Subject Matter Claims 4-8, 13-17, 20 are objected to as being dependent upon a rejected base claim, but would be allowable if rewritten in independent form including all of the limitations of the base claim and any intervening claims. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure includes: Park (US App. 20090244108) disclosing comparing gradation of frame with reference frame; Ahn et al. (US App. 20190206348) disclosing determining frequency by counting; and You et al. (US App. 20240242660) disclosing compare input frame frequency with reference frame frequency such that Fig 10 is similar to Fig. 2 of the instant specification. Any inquiry concerning this communication or earlier communications from the examiner should be directed to MATTHEW YEUNG whose telephone number is (571)272-4115. The examiner can normally be reached M-F 9am-5pm EST. Examiner interviews are available via telephone, in-person, and video conferencing using a USPTO supplied web-based collaboration tool. To schedule an interview, applicant is encouraged to use the USPTO Automated Interview Request (AIR) at http://www.uspto.gov/interviewpractice. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, William Boddie can be reached at 571-272-0666. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of published or unpublished applications may be obtained from Patent Center. Unpublished application information in Patent Center is available to registered users. To file and manage patent submissions in Patent Center, visit: https://patentcenter.uspto.gov. Visit https://www.uspto.gov/patents/apply/patent-center for more information about Patent Center and https://www.uspto.gov/patents/docx for information about filing in DOCX format. For additional questions, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /MATTHEW YEUNG/Primary Examiner, Art Unit 2625
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Prosecution Timeline

Sep 25, 2025
Application Filed
Sep 30, 2026
Non-Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

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PIXEL CIRCUIT, PIXEL DRIVING METHOD AND DISPLAY DEVICE
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1y 7m to grant Granted Aug 04, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

1-2
Expected OA Rounds
74%
Grant Probability
84%
With Interview (+9.1%)
2y 7m (~1y 6m remaining)
Median Time to Grant
Low
PTA Risk
Based on 528 resolved cases by this examiner. Grant probability derived from career allowance rate.

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