Prosecution Insights
Last updated: May 29, 2026
Application No. 18/665,308

OPTICAL SHEET LAMINATE, BACKLIGHT UNIT, LIQUID CRYSTAL DISPLAY DEVICE, INFORMATION EQUIPMENT, AND PRODUCTION METHOD FOR OPTICAL SHEET LAMINATE

Non-Final OA §103
Filed
May 15, 2024
Priority
Nov 18, 2021 — JP 2021-187488 +1 more
Examiner
CHIEN, LUCY P
Art Unit
2871
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
Keiwa Incorporated
OA Round
1 (Non-Final)
83%
Grant Probability
Favorable
1-2
OA Rounds
6m
Est. Remaining
89%
With Interview

Examiner Intelligence

Grants 83% — above average
83%
Career Allowance Rate
750 granted / 905 resolved
+14.9% vs TC avg
Moderate +6% lift
Without
With
+5.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
23 currently pending
Career history
935
Total Applications
across all art units

Statute-Specific Performance

§103
81.5%
+41.5% vs TC avg
§102
8.0%
-32.0% vs TC avg
§112
0.3%
-39.7% vs TC avg
Black line = Tech Center average estimate • Based on career data from 905 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. Claim(s) 1-22 is/are rejected under 35 U.S.C. 103 as being unpatentable over Yasunaga et al (US 10754195) in view of Vasylyev et al (US 20200319391) Regarding Claim 1, Yasunaga et al discloses (Fig. 1 and Fig. 3) an optical sheet laminate (16) built in a liquid crystal display device (11) including a display screen, on a back surface side of which a plurality of point light sources (13) are provided in a dispersed manner, comprising: a first optical sheet (17) comprising a first surface on which a first print pattern (22a) at least partially reducing transmission of light from the plurality of point light sources (13) is formed. Yasunaga et al does not disclose wherein a second print pattern at least partially reducing transmission of light from the plurality of point light sources is formed on a second optical sheet different from the first optical sheet or on a second surface of the first optical sheet, and the first print pattern and the second print pattern reduce luminance unevenness attributed to the plurality of point light sources, thereby making the luminance uniform. Vasylyev et al discloses print patterns (Fig. 15) on each diffuser. Therefore wherein a second print pattern ([0288], white ink 91-94) at least partially reducing transmission of light from the plurality of point light sources is formed on a second optical sheet different from the first optical sheet or on a second surface of the first optical sheet, and the first print pattern and the second print pattern reduce luminance unevenness attributed to the plurality of point light sources, thereby making the luminance uniform. It would have been obvious to one of ordinary skill in the art to modify Yasunaga et al to include Vasylyev et al discloses print patterns (Fig. 15) on each diffuser. Therefore wherein a second print pattern at least partially reducing transmission of light from the plurality of point light sources is formed on a second optical sheet different from the first optical sheet or on a second surface of the first optical sheet, and the first print pattern and the second print pattern reduce luminance unevenness attributed to the plurality of point light sources, thereby making the luminance uniform motivated by the desire to achieve different visual effects displaying different illuminated patterns and/or colors to obtain different predefined luminance distributions [0288]. Regarding Claim 2, In addition to Yasunaga et al and Vasylyev et al, Yasunaga et al discloses (Fig. 1 and Fig. 3) wherein the first print pattern (22a) and the second print pattern (taught by Vasylyev et al) are each a collection of unit patterns arranged in a gradation manner so that a level of reduction in light transmission decreases from a vicinity of a portion directly above one single point light source (13) out of the plurality of point light sources toward an intermediate region between the one single point light source (13) and another point light source adjacent to the one single point light source, and the unit patterns are arranged two-dimensionally without uneven distribution to serve as the first print pattern and the second print pattern (as shown in Fig. 1). Regarding Claim 3, In addition to Yasunaga et al and Vasylyev et al, Yasunaga et al discloses (Fig. 1 and Fig. 3) wherein at least one of the first print pattern (22a) or the second print pattern (taught by Vasylyev et al) is a pattern comprising a print density corresponding to luminance in a luminance distribution produced by the plurality of point light sources (13) when the first print pattern (22a) and the second print pattern (taught by Vasylyev et al) are not provided, and the luminance and the print density have a positive correlation with each other (column 6, lines 3-30) Regarding Claim 4, In addition to Yasunaga et al and Vasylyev et al, Yasunaga et al discloses (Fig. 1 and Fig. 3) wherein a pattern formed by stacking the first print pattern (22a) and the second print patterns (taught by Vasylyev et al) is a pattern comprising a print density corresponding to luminance in a luminance distribution produced by the plurality of point light sources (13) when the first print pattern and the second print pattern are not provided, and the luminance and the print density have a positive correlation with each other. (column 6, lines 3-30) Regarding Claim 5, In addition to Yasunaga et al and Vasylyev et al, Yasunaga et al discloses (Fig. 1 and Fig. 3) wherein a high luminance region in the luminance distribution is a region directly above the plurality of point light sources (13). Regarding Claim 6, In addition to Yasunaga et al and Vasylyev et al, Yasunaga et al discloses (Fig. 1 and Fig. 3) wherein a high luminance region in the luminance distribution is a region between point light sources (13) adjacent to each other out of the plurality of point light sources. Regarding Claim 7, In addition to Yasunaga et al and Vasylyev et al, Yasunaga et al discloses (Fig. 1 and Fig. 3) wherein the first optical sheet (17) is a first light diffusion sheet. Regarding Claim 8, In addition to Yasunaga et al and Vasylyev et al, Yasunaga et al discloses (Fig. 1 and Fig. 3) wherein the second print pattern (taught by Vasylyev et al) is formed on the second optical sheet, in the first light diffusion sheet (17), the first surface is a flat surface or a matte surface, and the second surface comprises a plurality of recesses arranged two-dimensionally (white ink (fig.3), and the second optical sheet (24) is a second light diffusion sheet comprising a flat surface or a matte surface on which the second print pattern is formed. Regarding Claim 9, In addition to Yasunaga et al and Vasylyev et al, Yasunaga et al discloses (Fig. 1 and Fig. 3) wherein the second print pattern (22) is formed on the first light diffusion sheet (17), and in the first light diffusion sheet, one of the first surface or the second surface comprises a plurality of recesses arranged two-dimensionally (Fig. 3), and the other one of the first surface or the second surface is a flat surface or a matte surface. Regarding Claim 10, In addition to Yasunaga et al and Vasylyev et al, Yasunaga et al discloses (Fig. 1 and Fig. 3) wherein the plurality of recesses comprise an inverted polygon pyramid shape, an inverted truncated polygon pyramid shape, or a lower hemisphere shape (column 20, lines 39-44). Regarding Claim 11, In addition to Yasunaga et al and Vasylyev et al, Yasunaga et al discloses (Fig. 1 and Fig. 3) A backlight unit built in the liquid crystal display device and leading light emitted from the plurality of point light sources (13) toward the display screen, comprising: the optical sheet (17) laminate of claim 1 between the display screen (11) and the plurality of point light sources (13). Regarding Claim 12, In addition to Yasunaga et al and Vasylyev et al, Yasunaga et al discloses (Fig. 1 and Fig. 3) wherein a distance between the plurality of point light sources (13) and the optical sheet (17) laminate is 2 mm or less. One would have recognized wherein a distance between the plurality of point light sources and the optical sheet laminate is 2 mm or less as a result-effective variable. Regarding Claim 13, In addition to Yasunaga et al and Vasylyev et al, Yasunaga et al discloses (Fig. 1 and Fig. 3) wherein the plurality of point light sources (13) are LED elements. Regarding Claim 14, In addition to Yasunaga et al and Vasylyev et al, Yasunaga et al discloses (Fig. 1 and Fig. 3) wherein the plurality of point light sources (13) are arranged on a reflection member (15) provided on an opposite side of the display screen (11) when viewed from the optical sheet laminate. Regarding Claim 15, In addition to Yasunaga et al and Vasylyev et al, Yasunaga et al discloses (Fig. 1 and Fig. 3) the backlight unit of claim 11; and a liquid crystal display panel (10). Regarding Claim 16, In addition to Yasunaga et al and Vasylyev et al, Yasunaga et al discloses (Fig. 1 and Fig. 3) An information equipment, comprising: the liquid crystal display device of claim 15. Regarding Claim 17, In addition to Yasunaga et al and Vasylyev et al, Yasunaga et al discloses (Fig. 1 and Fig. 3) A production method for an optical sheet (17) laminate built in a liquid crystal display device including a display screen (11), on a back surface side of which a plurality of point light sources (13) are provided in a dispersed manner, comprising: a step A of forming a first print pattern (22) at least partially reducing transmission of light from the plurality of point light sources (13), on a first surface of a first optical sheet (17); on a second optical sheet (19) different from the first optical sheet (17) or on a second surface of the first optical sheet, wherein the step A and the step B are performed so that the first print pattern (22) and the second print pattern (taught by Vasylyev et al) reduce luminance unevenness attributed to the plurality of point light sources (13), thereby making the luminance uniform. Yasunaga et al does not disclose and a step B of forming a second print pattern at least partially reducing transmission of light from the plurality of point light sources. Vasylyev et al discloses print patterns (Fig. 15) on each diffuser. Therefore wherein a second print pattern ([0288], white ink 91-94) at least partially reducing transmission of light from the plurality of point light sources is formed on a second optical sheet different from the first optical sheet or on a second surface of the first optical sheet, and the first print pattern and the second print pattern reduce luminance unevenness attributed to the plurality of point light sources, thereby making the luminance uniform. It would have been obvious to one of ordinary skill in the art to modify Yasunaga et al to include Vasylyev et al discloses print patterns (Fig. 15) on each diffuser. Therefore wherein a second print pattern at least partially reducing transmission of light from the plurality of point light sources is formed on a second optical sheet different from the first optical sheet or on a second surface of the first optical sheet, and the first print pattern and the second print pattern reduce luminance unevenness attributed to the plurality of point light sources, thereby making the luminance uniform motivated by the desire to achieve different visual effects displaying different illuminated patterns and/or colors to obtain different predefined luminance distributions [0288]. Regarding Claim 18, In addition to Yasunaga et al and Vasylyev et al, Yasunaga et al discloses (Fig. 1 and Fig. 3) wherein the first print pattern (22a) and the second print pattern (taught by Vasylyev et al) are each a collection of unit patterns arranged in a gradation manner so that a level of reduction in light transmission decreases from a vicinity of a portion directly above one single point light source out of the plurality of point light sources toward an intermediate region between the one single point light source and another point light source adjacent to the one single point light source, and the unit patterns are arranged two-dimensionally without uneven distribution to serve as the first print pattern and the second print pattern. (column 6, lines 3-30) Regarding Claim 19, In addition to Yasunaga et al and Vasylyev et al, Yasunaga et al discloses (Fig. 1 and Fig. 3) wherein at least one of the first print pattern or the second print pattern is a pattern comprising a print density corresponding to luminance in a luminance distribution produced by the plurality of point light sources when the first print pattern and the second print pattern are not provided, and the luminance and the print density have a positive correlation with each other. (column 6, lines 3-30) Regarding Claim 20, In addition to Yasunaga et al and Vasylyev et al, Yasunaga et al discloses (Fig. 1 and Fig. 3) wherein a pattern formed by stacking the first print pattern (22) and the second print patterns (taught by Vasylyev et al) is a pattern comprising a print density corresponding to luminance in a luminance distribution produced by the plurality of point light sources when the first print pattern and the second print pattern are not provided, and the luminance and the print density have a positive correlation with each other. (column 6, lines 3-30) Regarding Claim 21, In addition to Yasunaga et al and Vasylyev et al, Yasunaga et al discloses (Fig. 1 and Fig. 3) wherein a high luminance region in the luminance distribution is a region directly above the plurality of point light sources (13). (column 6, lines 3-30) Regarding Claim 22, In addition to Yasunaga et al and Vasylyev et al, Yasunaga et al discloses (Fig. 1 and Fig. 3) wherein a high luminance region in the luminance distribution is a region between point light sources (13) adjacent to each other out of the plurality of point light sources. (column 6, lines 3-30) Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to LUCY P CHIEN whose telephone number is (571)272-8579. The examiner can normally be reached 9AM-5PM PST M-F. 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, Michael Caley can be reached at 571-272-2286. 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. /LUCY P CHIEN/Primary Examiner, Art Unit 2871
Read full office action

Prosecution Timeline

May 15, 2024
Application Filed
Apr 29, 2026
Non-Final Rejection mailed — §103 (current)

Precedent Cases

Applications granted by this same examiner with similar technology

Patent 12638733
DISPLAY PANEL AND DISPLAY DEVICE
2y 4m to grant Granted May 26, 2026
Patent 12631925
DISPLAY DEVICE
2y 2m to grant Granted May 19, 2026
Patent 12631923
LIQUID CRYSTAL DISPLAY DEVICE
1y 7m to grant Granted May 19, 2026
Patent 12631921
DISPLAY DEVICE AND DISPLAY SYSTEM
1y 7m to grant Granted May 19, 2026
Patent 12625352
NEAR-EYE DISPLAY DEVICE AND NEAR-EYE DISPLAY OPTICAL ASSEMBLY
2y 3m to grant Granted May 12, 2026
Study what changed to get past this examiner. Based on 5 most recent grants.

Strategy Recommendation AI-generated — please review before filing

Get a prosecution strategy drawn from examiner precedents, rejection analysis, and claim mapping.
Typically takes 5-10 seconds — AI-generated, attorney review required before filing

Prosecution Projections

1-2
Expected OA Rounds
83%
Grant Probability
89%
With Interview (+5.7%)
2y 7m (~6m remaining)
Median Time to Grant
Low
PTA Risk
Based on 905 resolved cases by this examiner. Grant probability derived from career allowance rate.

Sign in with your work email

Enter your email to receive a magic link. No password needed.

Personal email addresses (Gmail, Yahoo, etc.) are not accepted.

Free tier: 3 strategy analyses per month