IP Library Granted Patent US 12,656,622
Granted Patent B2
US 12,656,622 · App. 17/404,485 · Granted Jun 16, 2026

Electronic device

Inventors: Moosoon Ko (Seoul, KR); Sanghoon Yim (Suwon-si, KR)
Assignee: SAMSUNG DISPLAY CO., LTD.
G02B27/286H10K59/38H10K59/8792H04N23/57H10K59/126H10K59/87
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12,656,622
App. No.
17/404,485
Granted
Jun 16, 2026
Kind
B2
Abstract

An electronic device includes an electronic module, a support member including a through-hole overlapping the electronic module, a display panel disposed on the support member and including a first display region overlapping the through-hole of the support member, and a second display region that does not overlap the through-hole of the support member, the second region being adjacent to the first display region, a light control layer disposed on the display panel, and a lower polarizing plate disposed between the electronic module and the display panel, wherein the lower polarizing plate includes a first linear polarizing layer adjacent to the electronic module, and a first phase retardation layer disposed between the first linear polarizing layer and the display panel.

Claims (158)

1 . An electronic device comprising:

an electronic module;

a support member in which a through-hole overlapping the electronic module is defined;

a display panel disposed on the support member and comprising:

a first display region overlapping the through-hole of the support member; and

a second display region that does not overlap the through-hole of the support member, the second display region being adjacent to the first display region;

a light control layer disposed on the display panel; and

a lower polarizing plate disposed between the electronic module and the display panel,

wherein the lower polarizing plate comprises:

a first linear polarizing layer adjacent to the electronic module and comprising an upper surface, a lower surface opposite the upper surface, first non-polarizing portions, and first linear polarizing portions alternately arranged with each other and each overlapping the first display region, wherein the lower surface has a portion exposed to and overlapping the electronic module; and

a first phase retardation layer disposed between the first linear polarizing layer and the display panel and directly contacting the upper surface of the first linear polarizing layer,

wherein the first phase retardation layer comprises two phase retarders configured to provide respectively different amounts of phase shift,

wherein the lower polarizing plate comprises a first polarizing region disposed in the first display region and is absent from the second display region, and

wherein the first polarizing region comprises the first linear polarizing portions and the first non-polarizing portions.

2 . The electronic device of claim 1 , wherein the first phase retardation layer of the lower polarizing plate is a λ/4 phase retarder, and

an angle between an absorption axis of the first linear polarizing layer of the lower polarizing plate and an optical axis of the first phase retardation layer of the lower polarizing plate is about 45±5 degrees.

3 . The electronic device of claim 2 , wherein

the light control layer comprises an upper polarizing plate,

the upper polarizing plate comprises:

a second linear polarizing layer; and

a second phase retardation layer disposed between the display panel and the second linear polarizing layer,

the second phase retardation layer of the upper polarizing plate is a λ/4 phase retarder, and

an angle between an absorption axis of the second linear polarizing layer of the upper polarizing plate and an optical axis of the second phase retardation layer of the upper polarizing plate is about 45±5 degrees.

4 . The electronic device of claim 1 , wherein

the first phase retardation layer of the lower polarizing plate comprises:

a first λ/4 phase retarder; and

a first λ/2 phase retarder disposed between the first λ/4 phase retarder and the first linear polarizing layer of the lower polarizing plate,

an angle between an absorption axis of the first linear polarizing layer of the lower polarizing plate and an optical axis of the first λ/4 phase retarder is about 15±5 degrees, and

an angle between the absorption axis of the first linear polarizing layer of the lower polarizing plate and an optical axis of the first λ/2 phase retarder is about 75±5 degrees.

5 . The electronic device of claim 4 , wherein

the light control layer comprises an upper polarizing plate,

the upper polarizing plate comprises:

a second linear polarizing layer;

a second λ/4 phase retarder disposed between the display panel and the second linear polarizing layer, and

a second λ/2 phase retarder disposed between the second λ/4 phase retarder and the second linear polarizing layer,

an angle between an absorption axis of the second linear polarizing layer of the upper polarizing plate and an optical axis of the second λ/4 phase retarder of the upper polarizing plate is about 15±5 degrees, and

an angle between the absorption axis of the second linear polarizing layer of the upper polarizing plate and an optical axis of the second λ/2 phase retarder of the upper polarizing plate is about 75±5 degrees.

6 . The electronic device of claim 5 , wherein a polarized component transmitted through the lower polarizing plate and a polarized component transmitted through the light control layer are both counterclockwise polarized light.

7 . The electronic device of claim 5 , wherein a polarized component transmitted through the lower polarizing plate and a polarized component transmitted through the light control layer are both clockwise polarized light.

8 . The electronic device of claim 1 , wherein the light control layer comprises:

a first filter portion that transmits blue light;

a second filter portion that transmits green light;

a third filter portion that transmits red light; and

a light-shielding portion overlapping edges of the first filter portion, the second filter portion, and the third filter portion.

9 . The electronic device of claim 1 , wherein the lower polarizing plate overlaps the first display region of the display panel and a portion of the second display region of the display panel adjacent to the first display region of the display panel.

10 . The electronic device of claim 9 , further comprising an adhesive layer disposed between the support member and the display panel,

wherein the adhesive layer fills a gap between the support member and the display panel by overlapping the second display region of the display panel that does not overlap the lower polarizing plate.

11 . The electronic device of claim 1 , wherein

the electronic module comprises a lens adjacent to the lower polarizing plate, and

an area of the lower polarizing plate is greater than an area of the lens of the electronic module in a plan view.

12 . The electronic device of claim 1 , wherein the lower polarizing plate further comprises:

a second polarizing region adjacent to the first polarizing region and overlapping the second display region,

wherein the first non-polarizing portions having a higher light transmittance than a light transmittance of the first linear polarizing portions; and

wherein the second polarizing region does not include the first non-polarizing portions.

13 . The electronic device of claim 12 , wherein

the first linear polarizing layer of the lower polarizing plate comprises a stretched polymer film and light absorbers adsorbed into the stretched polymer film, and

a number of light absorbers per unit area in the first non-polarizing portions of the lower polarizing plate is smaller than a number of light absorbers per unit area in the first linear polarizing portions of the lower polarizing plate.

14 . The electronic device of claim 12 , wherein

the light control layer comprises an upper polarizing plate, and

the upper polarizing plate comprises:

a third polarizing region overlapping the first polarizing region of the lower polarizing plate and comprising:

a second polarizing portion; and

a second non-polarizing portion having a higher light transmittance than

a light transmittance of the second polarizing portion; and

a fourth polarizing region overlapping the second polarizing region of the lower polarizing plate.

15 . The electronic device of claim 1 , wherein the display panel comprises:

a base layer;

a circuit layer comprising a shielding pattern disposed on the base layer;

a light-emitting element layer disposed on the circuit layer; and

an upper insulating layer disposed on the light-emitting element layer.

16 . The electronic device of claim 15 , wherein

the first display region of the display panel comprises:

a non-pixel region not including the shielding pattern; and

a pixel region including the shielding pattern, and

a light transmittance of light transmitted through the light control layer and the lower polarizing plate overlapping the non-pixel region is higher than a light transmittance of light transmitted through the light control layer and the lower polarizing plate overlapping the pixel region.

17 . The electronic device of claim 1 , wherein the electronic module is a camera having an optical path in a direction to the display panel.

18 . The electronic device of claim 1 , wherein

each of the first display region and the second display region of the display panel comprises a plurality of pixel units, and

a number of pixel units per unit area of the plurality of pixel units in the second display region of the display panel is smaller than a number of pixel units per unit area of the plurality of pixel units in the first display region of the display panel.

19 . An electronic device comprising:

an electronic module;

a display panel disposed on the electronic module and comprising:

a first display region overlapping the electronic module; and

a second display region having a higher pixel density than a pixel density of the first display region;

an upper polarizing plate disposed on the display panel; and

a lower polarizing plate disposed between the electronic module and the display panel and comprising a first linear polarizing layer and a first phase retardation layer, the first linear polarizing layer including an upper surface, a lower surface opposite the upper surface, first non-polarizing portions, and first linear polarizing portions alternately arranged with each other and each overlapping the first display region, wherein the lower surface has a portion exposed to and overlapping the electronic module, and the first phase retardation layer directly contacts the upper surface of the first linear polarizing layer between the first linear polarizing layer and the display panel,

wherein the first linear polarizing layer is patterned in a configuration substantially corresponding to only the first display region; and

wherein the upper polarizing plate and the lower polarizing plate circularly polarize incident light in a same direction to transmit the incident light.

20 . The electronic device of claim 19 , wherein

the upper polarizing plate and the lower polarizing plate polarize light counterclockwise to transmit counterclockwise polarized light, or

the upper polarizing plate and the lower polarizing plate polarize light clockwise to transmit clockwise polarized light.

21 . The electronic device of claim 19 , wherein

the first phase retardation layer of the lower polarizing plate comprises:

a first λ/4 phase retarder disposed between the first linear polarizing layer and the display panel, and

an angle between an absorption axis of the first linear polarizing layer and an optical axis of the first λ/4 phase retarder is about 45±5 degrees.

22 . The electronic device of claim 21 , wherein

the upper polarizing plate comprises:

a second linear polarizing layer; and

a second λ/4 phase retarder disposed between the display panel and the second linear polarizing layer, and

an angle between an absorption axis of the second linear polarizing layer and an optical axis of the second λ/4 phase retarder is about 45±5 degrees.

23 . The electronic device of claim 19 , wherein

the first phase retardation layer of the lower polarizing plate comprises:

a first λ/4 phase retarder disposed on the first linear polarizing layer; and

a first λ/2 phase retarder disposed between the first λ/4 phase retarder and the first linear polarizing layer,

an angle between an absorption axis of the first linear polarizing layer and an optical axis of the first λ/4 phase retarder is about 15±5 degrees, and

an angle between the absorption axis of the first linear polarizing layer and an optical axis of the first λ/2 phase retarder is about 75±5 degrees.

24 . The electronic device of claim 23 , wherein

the upper polarizing plate comprises:

a second linear polarizing layer;

a second λ/4 phase retarder disposed between the display panel and the second linear polarizing layer; and

a second λ/2 phase retarder disposed between the second λ/4 phase retarder and the second linear polarizing layer,

an angle between an absorption axis of the second linear polarizing layer and an optical axis of the second λ/4 phase retarder is about 15±5 degrees, and

an angle between the absorption axis of the second linear polarizing layer and an optical axis of the second λ/2 phase retarder is about 75±5 degrees.

25 . The electronic device of claim 19 , wherein

the electronic module comprises a lens adjacent to the lower polarizing plate, and

an area of the lower polarizing plate is greater than an area of the lens of the electronic module in a plan view.

26 . An electronic device comprising:

an electronic module;

a display panel disposed on the electronic module and comprising:

a first display region overlapping the electronic module; and

a second display region surrounding at least a portion of the first display region;

a light control layer disposed on the display panel; and

a lower polarizing plate disposed between the electronic module and the display panel,

wherein the lower polarizing plate comprises:

a first linear polarizing layer adjacent to the electronic module and comprising:

an upper surface;

a lower surface opposite the upper surface and having a portion exposed to and overlapping the electronic module;

a plurality of linear polarizing portions; and

a plurality of non-polarizing portions having a higher light transmittance than a light transmittance of the linear polarizing portions, the non-polarizing portions and the linear polarizing portions alternately arranged with each other and each overlapping the first display region; and

a first phase retardation layer disposed between the first linear polarizing layer and the display panel and directly contacting the upper surface of the first linear polarizing layer, and

wherein the first linear polarizing layer is patterned in a configuration substantially corresponding to only the first display region.

27 . The electronic device of claim 26 , wherein

the first linear polarizing layer comprises a stretched polymer film and light absorbers adsorbed into the stretched polymer film, and

one or more of the non-polarizing portions of the lower polarizing plate comprises the stretched polymer film in which the light absorbers are desorbed.

28 . The electronic device of claim 26 , wherein the lower polarizing plate comprises:

a first polarizing region comprising the non-polarizing portions and overlapping the first display region of the display panel; and

a second polarizing region overlapping the second display region of the display panel and not including the non-polarizing portions of the first polarizing region of the lower polarizing plate.

29 . The electronic device of claim 28 , wherein the display panel comprises:

a base layer;

a circuit layer comprising a shielding pattern disposed on the base layer;

a light-emitting element layer disposed on the circuit layer; and

an upper insulating layer disposed on the light-emitting element layer,

wherein the shielding pattern and the non-polarizing portions of the first polarizing region of the lower polarizing plate do not overlap in the first display region of the display panel.

30 . The electronic device of claim 26 , wherein

the first phase retardation layer is a λ/4 phase retarder, and

an angle between an absorption axis of the first linear polarizing layer and an optical axis of the first phase retardation layer is about 45±5 degrees.

31 . The electronic device of claim 30 , wherein

the light control layer comprises an upper polarizing plate,

the upper polarizing plate comprises:

a second linear polarizing layer; and

a second phase retardation layer disposed between the display panel and the second linear polarizing layer,

the second phase retardation layer is a λ/4 phase retarder, and

an angle between an absorption axis of the second linear polarizing layer and an optical axis of the second phase retardation layer is about 45±5 degrees.

32 . The electronic device of claim 31 , wherein the upper polarizing plate comprises:

a third polarizing region overlapping the first polarizing region of the lower polarizing plate and comprising:

a second polarizing portion; and

a second non-polarizing portion having a higher light transmittance than a light transmittance of the second polarizing portion; and

a fourth polarizing region overlapping the second polarizing region of the lower polarizing plate and not including the second non-polarizing portion.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 17, 2021
From: KO, MOOSOON; YIM, SANGHOON
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 057203/0748 →
Priority Claims (1)
KR 10-2020-0104174 · Aug 19, 2020 · national
Continuity (1)
Related Publication 20220059806A1 · Feb 24, 2022
References Cited (41)
US 9143668B2 · Mathew et al. · 2015 [cited by applicant]
US 9224973B2 · Park et al. · 2015 [cited by applicant]
US 9257563B2 · Ahn et al. · 2016 [cited by applicant]
US 9709844B2 · Yim et al. · 2017 [cited by applicant]
US 10401675B2 · Lee et al. · 2019 [cited by applicant]
US 20130314647A1 · Yim · 2013 [cited by examiner]
US 20150153495A1 · Matsuda et al. · 2015 [cited by applicant]
US 20150219950A1 · Kim et al. · 2015 [cited by applicant]
US 20150378078A1 · Jiao et al. · 2015 [cited by applicant]
US 20160238770A1 · Goto · 2016 [cited by examiner]
US 20170123120A1 · Shirouchi · 2017 [cited by examiner]
US 20170131593A1 · Tang · 2017 [cited by examiner]
US 20170261793A1 · Son · 2017 [cited by examiner]
US 20190086729A1 · Saito · 2019 [cited by examiner]
US 20190091970A1 · Ueki · 2019 [cited by examiner]
US 20200075680A1 · Sun · 2020 [cited by examiner]
US 20200117034A1 · Yin et al. · 2020 [cited by applicant]
US 20210191193A1 · Liu et al. · 2021 [cited by applicant]
US 20210376292A1 · Choi et al. · 2021 [cited by applicant]
CN 103871327A · 2014 [cited by applicant]
CN 105891932A · 2016 [cited by applicant]
CN 107179624A · 2017 [cited by applicant]
CN 108122488A · 2018 [cited by applicant]
CN 108269840 · 2018 [cited by applicant]
CN 109001935A · 2018 [cited by applicant]
CN 109192759A · 2019 [cited by applicant]
CN 108074533 · 2019 [cited by applicant]
CN 111292628A · 2020 [cited by applicant]
CN 111682048B · 2023 [cited by examiner]
EP 1118885 · 2001 [cited by applicant]
JP 2012098726A2 · 2012 [cited by applicant]
KR 1020160034620 · 2016 [cited by applicant]
KR 102031816 · 2019 [cited by applicant]
KR 1020200002968 · 2020 [cited by applicant]
KR 102080007 · 2020 [cited by applicant]
KR 1020210149964 · 2021 [cited by applicant]
WO 2020062413 · 2020 [cited by applicant]
WO WO2020062413A1 · 2020 [cited by examiner]
Translation of CN 111682048 B (Year: 2023). [cited by examiner]
Partial European search report for European Patent Application or Patent No. 21190832.2 dated Jan. 26, 2022. [cited by applicant]
Extended European Search Report for European Patent Application or Patent No. 21190832.2 dated Jun. 10, 2022. [cited by applicant]