Prosecution Insights
Last updated: July 05, 2026
Application No. 18/467,249

THIN FILM TRANSISTOR ARRAY SUBSTATE AND DISPLAY DEVICE INCLUDING THE SAME

Non-Final OA §103§112
Filed
Sep 14, 2023
Priority
Oct 28, 2022 — RE 10-2022-0141369
Examiner
WEILAND, ADAM DAVID
Art Unit
2813
Tech Center
2800 — Semiconductors & Electrical Systems
Assignee
LG Display Co., Ltd.
OA Round
1 (Non-Final)
97%
Grant Probability
Favorable
1-2
OA Rounds
5m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 97% — above average
97%
Career Allowance Rate
32 granted / 33 resolved
+29.0% vs TC avg
Minimal +5% lift
Without
With
+4.8%
Interview Lift
resolved cases with interview
Typical timeline
3y 3m
Avg Prosecution
29 currently pending
Career history
88
Total Applications
across all art units

Statute-Specific Performance

§103
88.7%
+48.7% vs TC avg
§102
8.3%
-31.7% vs TC avg
§112
3.1%
-36.9% vs TC avg
Black line = Tech Center average estimate • Based on career data from 33 resolved cases

Office Action

§103 §112
DETAILED ACTION This action is responsive to U.S. Patent Application No. 17/467,249 filed on 14 September 2022. 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 . Priority Receipt is acknowledged of papers submitted under 35 U.S.C. 119(a)-(d), which papers have been placed of record in the file. Election/Restrictions Applicant’s election without traverse of the Species I embodiment in the reply filed on 8 January 2026 is acknowledged. Accordingly, claims 9-15, which are directed to a nonelected species, are withdrawn from further consideration. Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claim 8 is rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. “The essential inquiry pertaining to this requirement is whether the claims set out and circumscribe a particular subject matter with a reasonable degree of clarity and particularity. ‘As the statutory language of “particular[ity]” and “distinct[ness]” indicates, claims are required to be cast in clear—as opposed to ambiguous, vague, indefinite—terms. It is the claims that notify the public of what is within the protections of the patent, and what is not.’” MPEP § 2173.02(II) (quoting In re Packard, 751 F.3d 1307, 1313 (Fed. Cir. 2014)). Regarding Claim 8: Claim 8 states, in relevant part, “and a vertical distance from the first oxide semiconductor pattern, except for the first protrusion, to the first gate electrode is a second vertical distance (D2) . . . .” It is unclear whether the recited limitation encompasses (1) a configuration wherein a portion of the semiconductor pattern does not form the first protrusion, in which case the vertical distance is measured from the portion of the semiconductor pattern not forming the first protrusion, or (2) a configuration wherein, e.g., a top surface of the semiconductor pattern may form a protrusion, but not a bottom surface of the semiconductor pattern, in which case the vertical distance is measured from the portion of the semiconductor pattern not forming the first protrusion (i.e., the bottom surface). For the purposes of examination, the relevant language has been interpreted in accordance with interpretation (1). Moreover, to the extent Applicant intends to claim and positively recites a structure of “the first oxide semiconductor pattern, except for the first protrusion,” the Examiner respectfully notes there is insufficient antecedent basis for this limitation in the claim. Applicant may cancel the claims, amend the claims, or present a sufficient showing that the claims comply with the statutory requirements. Appropriate correction is required. 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. Claims 1-8 and 16-19 is/are rejected under 35 U.S.C. § 103 as being unpatentable over U.S. Patent Publication No. 2021/0005638 (published Jan. 7, 2021) (hereinafter “Noh”) in view of U.S. Patent Publication No. 2022/0013549 (filed July 2, 2021) (hereinafter “Park”). Regarding independent claim 1, Noh discloses: A thin film transistor array substrate comprising: a substrate (FIG. 14, substrate 100, [0027]) comprising an active area (FIGS. 1/14, depicting, e.g., the area in which the pixel PA is disposed, [0027]) and a non-active area disposed around the active area (FIGS. 1/14, depicting, e.g., the area disposed around the area in which the pixel PA is disposed, [0027]); a first thin film transistor disposed on the substrate (FIG. 14, thin film transistor 300, [0030]); wherein the first thin film transistor comprises a first oxide semiconductor pattern disposed on the substrate (FIG. 14, semiconductor pattern 310, which may be an oxide semiconductor, disposed on the substrate 100, [0031]), a first gate electrode (FIG. 14, second gate electrode 330, [0030]), a first gate insulating layer interposed between the first oxide semiconductor pattern and the first gate electrode (FIG. 14, depicting, e.g., a gate insulating film 114, disposed between the semiconductor pattern 310 and the second gate electrode 330, [0030]), a first source electrode (FIG. 14, source electrode 350, [0030]), and a first drain electrode (FIG. 14, drain electrode 360, [0030]); wherein the first oxide semiconductor pattern comprises a first portion and a second portion (FIGS. 1/13/14, e.g., a left portion and a right portion of the semiconductor pattern 310 which may be a first portion and a second portion). Noh does not specifically disclose a first light shielding pattern disposed between the substrate and the first thin film transistor, wherein the first light shielding pattern is electrically connected to one of the first source electrode and the first drain electrode and is disposed under the first oxide semiconductor pattern. In the same field of endeavor, Park discloses a thin-film transistor including a first light shielding pattern (FIG. 4, light blocking layer BML, [0065]) disposed between the substrate and the first thin film transistor (FIG. 4, depicting wherein the light blocking layer is disposed between the substrate SUB and the transistor T1), wherein the first light shielding pattern is electrically connected to one of the first source electrode and the first drain electrode (FIG. 4, depicting wherein the source electrode S1 is electrically connected to the light blocking layer BML). Regarding the light blocking layer BML, in [0066], Park states: “The light blocking layer BML may prevent or reduce instances of light, which is incident from the substrate SUB, entering a first channel region CP1 of the first active layer ACT1. Therefore, it may be possible to prevent or reduce instances of a leakage current due to light flowing in the first channel region CP1 of the first active layer ACT1.” Accordingly, it would have been obvious to one of ordinary skill in the art before the effective filing date of the invention to modify the thin film transistor of Noh by adding the light blocking layer of Park in order to prevent light from entering, and thereby preventing leakage current. See Park [0066]. Moreover, the addition of the light blocking layer of Park would result in a configuration wherein the first light shielding pattern is disposed under the first oxide semiconductor pattern (Noh FIG. 14; Park FIG. 4; depicting wherein the light blocking layer BML would be disposed under the semiconductor pattern 310 of Noh just as the light blocking layer BML is disposed under the active layer ACT1 of Park). Applicant further claims “wherein the first oxide semiconductor pattern comprises a first portion configured to form a first parasitic capacitance, together with the first gate electrode, and a second portion configured to form a second parasitic capacitance, together with the first gate electrode, and wherein the first parasitic capacitance and the second parasitic capacitance are different from each other.” When the structure recited in a reference is substantially identical to that of the claims, claimed properties or functions are presumed to be inherent. MPEP § 2112.01(I). “Where the claimed and prior art products are identical or substantially identical in structure or composition, or are produced by identical or substantially identical processes, a prima facie case of either anticipation or obviousness has been established.” Id. (citing In re Best, 562 F.2d 1252, 1255, 195 U.S.P.Q. 430, 433 (C.C.P.A. 1977)). “When the PTO shows a sound basis for believing that the products of the applicant and the prior art are the same, the applicant has the burden of showing that they are not.” Id. (quoting In re Spada, 911 F.2d 705, 709, 15 USPQ2d 1655, 1658 (Fed. Cir. 1990)). “Therefore, the prima facie case can be rebutted by evidence showing that the prior art products do not necessarily possess the characteristics of the claimed product.” Id. (citing In re Best, 562 F.2d at 1255). In the instant case, Noh in view of Park discloses a thin film transistor substrate structure that is identical to the thin film transistor substrate structure claimed in Applicant’s claim 1, and thus necessarily possesses the properties of the thin film transistor substrate structure claimed in Applicant’s claim 1, including wherein the first oxide semiconductor pattern comprises a first portion configured to form a first parasitic capacitance, together with the first gate electrode, and a second portion configured to form a second parasitic capacitance, together with the first gate electrode, and wherein the first parasitic capacitance and the second parasitic capacitance are different from each other. Compare, e.g., FIG. 14 and [0027]-[0031] of Noh and FIG. 4 and [0065]-[0066] of Park with FIGS. 5A-E and [0042]-[0212] of the instant application. Accordingly, Noh in view of Park discloses a display device that necessarily possesses the properties of the display device structure disclosed in Applicant’s claim 1, and thus renders obvious claim 1. Regarding claim 2, Noh in view of Park further discloses wherein the first portion of the first oxide semiconductor pattern comprises a protrusion protruding toward the first gate electrode (FIG. 14, depicting wherein the first portion of the second semiconductor pattern 310 includes a protrusion protruding toward the second gate electrode 330). Regarding claim 3, Noh in view of Park further discloses wherein the first oxide semiconductor pattern (FIG. 14, second semiconductor pattern 310) comprises: a first source region connected to the first source electrode (FIG. 14, depicting the portion of the second semiconductor pattern 310 under the source electrode 350), a first drain region connected to the first drain electrode (FIG. 14, depicting the portion of the second semiconductor pattern 310 under the drain electrode 360), and a first channel region disposed between the first source region and the first drain region (FIG. 14, depicting a channel region between the portions of the second semiconductor pattern 310 under the source and drain electrodes 350/360, [0032]), wherein a length of the first protrusion is equal to or greater than a length of the first channel region (FIG. 14, depicting wherein a length of the protrusion is greater than a length of the channel region). Regarding claim 4, Noh in view of Park further discloses wherein the first protrusion of the first oxide semiconductor pattern corresponds to the first channel region (FIG. 14, depicting wherein the protrusion corresponds to the channel region between the portions of the second semiconductor pattern 310 under the source and drain electrodes 350/360). Regarding claim 5, Noh in view of Park further discloses wherein the first protrusion is disposed in a number of at least one in a width direction of the first channel region (FIG. 14, depicting one protrusion). Regarding claim 6, Applicant further claims “wherein the first parasitic capacitance is greater than the second parasitic capacitance.” When the structure recited in a reference is substantially identical to that of the claims, claimed properties or functions are presumed to be inherent. MPEP § 2112.01(I). “Where the claimed and prior art products are identical or substantially identical in structure or composition, or are produced by identical or substantially identical processes, a prima facie case of either anticipation or obviousness has been established.” Id. (citing In re Best, 562 F.2d 1252, 1255, 195 U.S.P.Q. 430, 433 (C.C.P.A. 1977)). “When the PTO shows a sound basis for believing that the products of the applicant and the prior art are the same, the applicant has the burden of showing that they are not.” Id. (quoting In re Spada, 911 F.2d 705, 709, 15 USPQ2d 1655, 1658 (Fed. Cir. 1990)). “Therefore, the prima facie case can be rebutted by evidence showing that the prior art products do not necessarily possess the characteristics of the claimed product.” Id. (citing In re Best, 562 F.2d at 1255). In the instant case, Noh in view of Park discloses a thin film transistor substrate structure that is identical to the thin film transistor substrate structure claimed in Applicant’s claim 6, and thus necessarily possesses the properties of the thin film transistor substrate structure claimed in Applicant’s claim 6, including wherein the first parasitic capacitance is greater than the second parasitic capacitance. Compare, e.g., FIG. 14 and [0027]-[0031] of Noh and FIG. 4 and [0065]-[0066] of Park with FIGS. 5A-E and [0042]-[0212] of the instant application. Accordingly, Noh in view of Park discloses a display device that necessarily possesses the properties of the display device structure disclosed in Applicant’s claim 6, and thus renders obvious claim 6. Regarding claim 7, Noh in view of Park further discloses a buffer layer between the first oxide semiconductor pattern and the first light shielding pattern (FIG. 14, buffer insulating film 114, [0080]), wherein the buffer layer comprises a second protrusion protruding toward the first gate electrode (FIG. 14, depicting wherein the buffer insulating film 114 includes a protrusion protruding toward the second gate electrode 330), and wherein the first protrusion of the first oxide semiconductor pattern is deposited along a curvature of an upper surface of the buffer layer (FIG. 14, depicting wherein the protrusion of the semiconductor pattern 310 is deposited along a curvature of the upper surface of the buffer insulating film 114). Regarding claim 8, Noh in view of Park further discloses wherein when a vertical distance from the first protrusion to the first gate electrode is a first vertical distance (D1), and a vertical distance from the first oxide semiconductor pattern, except for the first protrusion, to the first gate electrode is a second vertical distance (D2), the second vertical distance (D2) is greater than the first vertical distance (D1) (FIG. 14, depicting wherein the portion of the semiconductor pattern 310 forming the protrusion is a first vertical distance from the gate electrode 330, wherein the portion of the semiconductor pattern 310 not forming the protrusion is a second vertical distance from the gate electrode 330, and further wherein the second vertical distance is greater than the first vertical distance). Regarding claim 16, Noh in view of Park further discloses wherein the first thin film transistor is a driving thin film transistor configured to drive a pixel disposed in the active area (FIG. 14; [0030]: “Each of the driving circuits may include at least two thin- film transistors 200 and 300. For example, each of the driving circuits may include a first thin-film transistor 200, a second thin-film transistor 300, and a storage capacitor 400. The first thin-film transistor 200 may turn on or off the second thin-film transistor 300 according to a gate signal. The storage capacitor 400 may maintain the signal applied to the second thin-film transistor 300 from the first thin-film transistor 200 for a predetermined period of time. The second thin-film transistor 300 may generate a driving current corresponding to the signal of the first thin-film transistor 200.”). Regarding claim 17, Applicant further claims “wherein a parasitic capacitance formed between the first light shielding pattern and the first oxide semiconductor pattern is greater than a parasitic capacitance formed between the first gate electrode and the first oxide semiconductor pattern.” When the structure recited in a reference is substantially identical to that of the claims, claimed properties or functions are presumed to be inherent. MPEP § 2112.01(I). “Where the claimed and prior art products are identical or substantially identical in structure or composition, or are produced by identical or substantially identical processes, a prima facie case of either anticipation or obviousness has been established.” Id. (citing In re Best, 562 F.2d 1252, 1255, 195 U.S.P.Q. 430, 433 (C.C.P.A. 1977)). “When the PTO shows a sound basis for believing that the products of the applicant and the prior art are the same, the applicant has the burden of showing that they are not.” Id. (quoting In re Spada, 911 F.2d 705, 709, 15 USPQ2d 1655, 1658 (Fed. Cir. 1990)). “Therefore, the prima facie case can be rebutted by evidence showing that the prior art products do not necessarily possess the characteristics of the claimed product.” Id. (citing In re Best, 562 F.2d at 1255). In the instant case, Noh in view of Park discloses a thin film transistor substrate structure that is identical to the thin film transistor substrate structure claimed in Applicant’s claim 17, and thus necessarily possesses the properties of the thin film transistor substrate structure claimed in Applicant’s claim 17, including wherein a parasitic capacitance formed between the first light shielding pattern and the first oxide semiconductor pattern is greater than a parasitic capacitance formed between the first gate electrode and the first oxide semiconductor pattern. Compare, e.g., FIG. 14 and [0027]-[0031] of Noh and FIG. 4 and [0065]-[0066] of Park with FIGS. 5A-E and [0042]-[0212] of the instant application. Accordingly, Noh in view of Park discloses a display device that necessarily possesses the properties of the display device structure disclosed in Applicant’s claim 17, and thus renders obvious claim 17. Regarding claim 18, Noh in view of Park further discloses wherein the first thin film transistor comprises a first sub-first thin film transistor (FIGS. 1/13/14, depicting, e.g., a “first sub-first thin film transistor” corresponding to a left portion of the semiconductor pattern 310) and a second sub-first thin film transistor (FIGS. 1/13/14, depicting, e.g., a “first sub-first thin film transistor” corresponding to a right portion of the semiconductor pattern 310); the first sub-first thin film transistor comprises the first portion of the first oxide semiconductor pattern, the first gate electrode, the first source electrode, and the first drain electrode (FIGS. 1/13/14, a “first sub-first thin film transistor” corresponding to a left portion of the semiconductor pattern 310 comprises the left portion of the semiconductor pattern 310, the gate electrode 330, the source electrode 350, and the drain electrode 360); the second sub-first thin film transistor comprises the second portion of the first oxide semiconductor pattern, the first gate electrode, the first source electrode, and the first drain electrode (FIGS. 1/13/14, a “second sub-first thin film transistor” corresponding to a right portion of the semiconductor pattern 310 comprises the right portion of the semiconductor pattern 310, the gate electrode 330, the source electrode 350, and the drain electrode 360). Applicant further claims “wherein a threshold voltage of the first sub-first thin film transistor is different from a threshold voltage of the second sub-first thin film transistor.” When the structure recited in a reference is substantially identical to that of the claims, claimed properties or functions are presumed to be inherent. MPEP § 2112.01(I). “Where the claimed and prior art products are identical or substantially identical in structure or composition, or are produced by identical or substantially identical processes, a prima facie case of either anticipation or obviousness has been established.” Id. (citing In re Best, 562 F.2d 1252, 1255, 195 U.S.P.Q. 430, 433 (C.C.P.A. 1977)). “When the PTO shows a sound basis for believing that the products of the applicant and the prior art are the same, the applicant has the burden of showing that they are not.” Id. (quoting In re Spada, 911 F.2d 705, 709, 15 USPQ2d 1655, 1658 (Fed. Cir. 1990)). “Therefore, the prima facie case can be rebutted by evidence showing that the prior art products do not necessarily possess the characteristics of the claimed product.” Id. (citing In re Best, 562 F.2d at 1255). In the instant case, Noh in view of Park discloses a thin film transistor substrate structure that is identical to the thin film transistor substrate structure claimed in Applicant’s claim 18, and thus necessarily possesses the properties of the thin film transistor substrate structure claimed in Applicant’s claim 18, including wherein a threshold voltage of the first sub-first thin film transistor is different from a threshold voltage of the second sub-first thin film transistor. Compare, e.g., FIG. 14 and [0027]-[0031] of Noh and FIG. 4 and [0065]-[0066] of Park with FIGS. 5A-E and [0042]-[0212] of the instant application. Accordingly, Noh in view of Park discloses a display device that necessarily possesses the properties of the display device structure disclosed in Applicant’s claim 18, and thus renders obvious claim 18. Regarding claim 19: Noh in view of Park further discloses a display device comprising: the thin film transistor array substrate according to claim 1 (FIGS. 1/14, depicting a display apparatus including the thin film transistor 300, [0016]); and a light emitting device part disposed on the substrate (FIG. 14, light emitting device 500, [0057]), the light emitting device part comprising a first electrode connected to the first drain electrode (FIG. 14, first electrode 510, [0059]: “The first electrode 510 may be electrically connected to the driving circuit of the corresponding pixel PA. For example, the lower protective film 120 and the over-coat layer 130 may include pixel contact holes partially exposing the second drain electrode 360 of the second thin-film transistor 300 in each pixel PA. The first electrode 510 may include a region that is in contact with the portion of the second drain electrode 360 of the second thin-film transistor 300 that is exposed by the corresponding pixel contact hole.”), a second electrode corresponding to the first electrode (FIG. 14, second electrode 530, [0060]), and a light emitting layer disposed between the first electrode and the second electrode (FIG. 14, light emitting layer 520 disposed between the first electrode 510 and the second electrode 530, [0060]). Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure: U.S. Patent Publication Nos.: 2016/0204266 (filed Oct. 9, 2015); 2023/0075289 (filed Aug. 25, 2022). Any inquiry concerning this communication or earlier communications from the examiner should be directed to ADAM D WEILAND whose telephone number is (703)756-4760. The examiner can normally be reached Monday - Friday 9am-5pm. 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, Steven Gauthier can be reached at (571)270-0373. 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. /ADAM D WEILAND/Examiner, Art Unit 2813 /STEVEN B GAUTHIER/Supervisory Patent Examiner, Art Unit 2813
Read full office action

Prosecution Timeline

Sep 14, 2023
Application Filed
Apr 02, 2026
Non-Final Rejection mailed — §103, §112 (current)

Precedent Cases

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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
97%
Grant Probability
99%
With Interview (+4.8%)
3y 3m (~5m remaining)
Median Time to Grant
Low
PTA Risk
Based on 33 resolved cases by this examiner. Grant probability derived from career allowance rate.

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