# US 12,004,411 B2 · Viewing angle switchable display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,004,411 B2 - Document ID: US12004411B2 - Status: Granted - Kind: B2 - Application number: 17/995,000 - Filed: 2022-11-28 - Published: 2023-07-06 - Granted: 2024-06-04 - Earliest claimed: 2021-12-30 - Assignees: LG Display Co., Ltd. - Applicants: LG Display Co., Ltd. - Inventors: Soon-Hwan Hong; Chang-Soo Kim; Sang-Hak Shin; Cheol-Hwan Lee; Seong-Yeong Kim - Web page: https://patentgrep.com/patent/US12004411B2 ## CPC - H10K 59/121: characterised by the geometry or disposition of pixel elements - H10K 59/8792: {comprising light absorbing layers, e.g. black layers} - G06F 3/0412: {Digitisers structurally integrated in a display} - G09G 3/3233: with pixel circuitry controlling the current through the light-emitting element - H10K 59/352: {the areas of the RGB subpixels being different} - H10K 59/353: {characterised by the geometrical arrangement of the RGB subpixels} - H10K 59/40: OLEDs integrated with touch screens - H10K 59/879: {comprising refractive means, e.g. lenses} - G09G 2300/0426: Layout of electrodes and connections - G09G 2300/0842: forming a memory circuit, e.g. a dynamic memory with one capacitor - G09G 2300/0861: with additional control of the display period without amending the charge stored in a pixel memory, e.g. by means of additional select electrodes - G09G 2320/068: for control of viewing angle adjustment - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - 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 A viewing angle switchable display device can include a display panel including first, second, and third sub-pixels, each of the first, second, and third sub-pixels having a first emission area and a second emission area spaced apart from the first emission area; and a lens layer disposed over the display panel and including a first type of lens corresponding to the first emission area and a second type of lens corresponding to the second emission area, in which the first type of lens has a different shape than the second type of lens. Also, the display panel is configured to display an image according to a wide view mode via the first emission area and the first type of lens, and display the image according to a narrow view mode via the second emission area and the second type of lens. ## Claims ### Claim 1 A viewing angle switchable display device, comprising: a display panel including first, second, and third sub-pixels, each of the first, second, and third sub-pixels having a first emission area and a second emission area spaced apart from the first emission area; and a lens layer disposed over the display panel and including a first type of lens corresponding to the first emission area and a second type of lens corresponding to the second emission area, wherein the first type of lens has a different shape than the second type of lens, and wherein a plurality of first lenses of the first type overlap with one first emission area in a same subpixel among at least one of the first, second, and third sub-pixels, and one second lens of the second type overlaps with the second emission areas in the first, second, and third sub-pixels. ### Claim 2 (depends on 1) The viewing angle switchable display device of claim 1, wherein the display panel is configured to: display an image according to a wide view mode via the first emission area and the first type of lens, and display the image according to a narrow view mode via the second emission area and the second type of lens. ### Claim 3 (depends on 1) The viewing angle switchable display device of claim 1, wherein the first and third sub-pixels are disposed adjacent to each other in a first direction, and the second sub-pixel is disposed adjacent to the first and third sub-pixels in a second direction perpendicular to the first direction. ### Claim 4 (depends on 1) The viewing angle switchable display device of claim 1, wherein the first emission areas of the first and third sub-pixels are disposed between the second emission area of the first sub-pixel and the second emission area of the third sub-pixel. ### Claim 5 (depends on 4) The viewing angle switchable display device of claim 4, wherein the first emission area of the second sub-pixel is disposed adjacent to the first emission areas of the first and third sub-pixels in the second direction, and wherein the second emission area of the second sub-pixel is disposed adjacent to the second emission area of the first sub-pixel in the second direction. ### Claim 6 (depends on 5) The viewing angle switchable display device of claim 5, wherein the one second lens of the second type corresponds to the second emission area of the first sub-pixel and the second emission area of the second sub-pixel, and wherein another second lens of the second type corresponds to the second emission areas of adjacent third sub-pixels in the second direction. ### Claim 7 (depends on 1) The viewing angle switchable display device of claim 1, wherein the first type of lens is a hemispherical lens, and the second type of lens is a semi-cylindrical lens. ### Claim 8 (depends on 1) The viewing angle switchable display device of claim 1, wherein the second sub-pixel is larger than the first sub-pixel and smaller than the third sub-pixel. ### Claim 9 (depends on 8) The viewing angle switchable display device of claim 8, wherein a number of first lenses of the first type of lens in the second sub-pixel is greater than a number of first lenses of the first type of lens in the first sub-pixel and smaller than a number of first lenses of the first type of lens in third sub-pixel. ### Claim 10 (depends on 1) The viewing angle switchable display device of claim 1, wherein each of the first, second, and third sub-pixel includes: a driving transistor connected to a high potential voltage; a first transistor switched according to a first gate signal and connected to a data line; a second transistor switched according to a second gate signal and connected to the driving transistor; a third transistor switched according to a first emission signal and connected to a reference line; a fourth transistor switched according to a second emission signal and connected to the driving transistor; a fifth transistor switched according to the second gate signal and connected to the reference line and the fourth transistor; a sixth transistor switched according to a third emission signal and connected to the driving transistor; a seventh transistor switched according to the second gate signal and connected to the reference line and the sixth transistor; a storage capacitor having a first electrode connected to the driving transistor and the second transistor, and a second electrode connected to the first and third transistors; a first light-emitting diode connected between the fourth and fifth transistors and a low potential voltage, the first light-emitting diode being disposed in the first emission area; and a second light-emitting diode connected between the sixth and seventh transistors and the low potential voltage, the second light-emitting diode being disposed in the second emission area. ### Claim 11 (depends on 10) The viewing angle switchable display device of claim 10, wherein each of the first, second, and third sub-pixels includes: a first anode electrode of the first light-emitting diode connected to the fourth and fifth transistors through a first contact part; and a second anode electrode of the second light-emitting diode connected to the sixth and seventh transistors through a second contact part, and wherein the first contact part and the second contact part of the third sub-pixel are disposed between the first anode electrode and the second anode electrode of the third sub-pixel. ### Claim 12 (depends on 1) The viewing angle switchable display device of claim 1, wherein each of the first, second, and third sub-pixel includes: a driving transistor connected to a high potential voltage; a first transistor switched according to a first gate signal and connected to a data line; a second transistor switched according to a second gate signal and connected to the driving transistor; a third transistor switched according to a first emission signal and connected to a reference line; a fourth transistor switched according to the first emission signal and connected to the driving transistor; a fifth transistor switched according to the second gate signal and connected to the reference line; a sixth transistor switched according to a second emission signal and connected to the fourth transistor and the fifth transistor; a storage capacitor having a first electrode connected to the driving transistor and the second transistor, and a second electrode connected to the first and third transistors; a first light-emitting diode connected between the fourth transistor and a low potential voltage, the first light-emitting diode being disposed in the first emission area; and a second light-emitting diode connected between the fifth and sixth transistors and the low potential voltage, the second light-emitting diode being disposed in the second emission area. ### Claim 13 (depends on 1) The viewing angle switchable display device of claim 1, wherein each of the first, second, and third sub-pixel includes: a first transistor switched according to a second gate signal and connected to a data line; a second transistor switched according to a first emission signal and connected to a high potential voltage; a driving transistor connected to the first and second transistors; a third transistor switched according to the second gate signal and connected to the driving transistor; a fourth transistor switched according to the first emission signal and connected to the driving transistor; a fifth transistor switched according to a first gate signal and connected to an initialization signal line; a sixth transistor switched according to a second emission signal and connected to the fourth transistor; a seventh transistor switched according to the second gate signal and connected to the initialization signal line and the sixth transistor; an eighth transistor switched according to a third emission signal and connected to the fourth transistor; a storage capacitor having a first electrode connected to the driving transistor and the third and fifth transistors, and a second electrode connected to the high potential voltage and the second transistor; a first light-emitting diode connected between the sixth and seventh transistors, and a low potential voltage, the first light-emitting diode being disposed in the first emission area; and a second light-emitting diode connected between the eighth transistor and the low potential voltage, the second light-emitting diode being disposed in the second emission area. ### Claim 14 (depends on 1) The viewing angle switchable display device of claim 1, wherein each of the first, second, and third sub-pixel includes: a first transistor switched according to a second gate signal and connected to a data line; a second transistor switched according to a first emission signal and connected to a high potential voltage; a driving transistor connected to the first and second transistors; a third transistor switched according to the second gate signal and connected to the driving transistor; a fourth transistor switched according to the first emission signal and connected to the driving transistor; a fifth transistor switched according to a first gate signal and connected to an initialization signal line; a sixth transistor switched according to a second emission signal and connected to the fourth transistor; a seventh transistor switched according to the second gate signal and connected to the initialization signal line and the sixth transistor; a storage capacitor having a first electrode connected to the driving transistor and the third and fifth transistors, and a second electrode connected to the high potential voltage and the second transistor; a first light-emitting diode connected between the fourth transistor and a low potential voltage, the first light-emitting diode being disposed in the first emission area; and a second light-emitting diode connected between the sixth and seventh transistors and the low potential voltage, the second light-emitting diode being disposed in the second emission area. ### Claim 15 (depends on 1) The viewing angle switchable display device of claim 1, wherein each of the first, second, and third sub-pixel includes: a first transistor switched according to a second gate signal and connected to a data line; a second transistor switched according to a first emission signal and connected to a high potential voltage; a driving transistor connected to the first and second transistors; a third transistor switched according to the second gate signal and connected to the driving transistor; a fourth transistor switched according to the first emission signal and connected to the driving transistor; a fifth transistor switched according to a first gate signal and connected to an initialization signal line; a sixth transistor switched according to a second emission signal and connected to the fourth transistor; a seventh transistor switched according to the second gate signal and connected to the initialization signal line and the sixth transistor; an eighth transistor switched according to the first emission signal and connected to the high potential voltage; a ninth transistor switched according to the second gate signal and connected to a reference line; a tenth transistor switched according to the first gate signal and connected to the reference line; an eleventh transistor switched according to a third emission signal and connected to the fourth transistor; a storage capacitor having a first electrode connected to the driving transistor and the third and fifth transistors, and a second electrode connected to the eighth, ninth and tenth transistors; a first light-emitting diode connected between the sixth and seventh transistors and a low potential voltage, the first light-emitting diode being disposed in the first emission area; and a second light-emitting diode connected between the eleventh transistor and the low potential voltage, the second light-emitting diode being disposed in the second emission area. ### Claim 16 (depends on 1) The viewing angle switchable display device of claim 1, wherein each of the first, second, and third sub-pixel includes: a first transistor switched according to a second gate signal and connected to a data line; a second transistor switched according to a first emission signal and connected to a high potential voltage; a driving transistor connected to the first and second transistors; a third transistor switched according to the second gate signal and connected to the driving transistor; a fourth transistor switched according to the first emission signal and connected to the driving transistor; a fifth transistor switched according to a first gate signal and connected to an initialization signal line; a sixth transistor switched according to a second emission signal and connected to the fourth transistor; a seventh transistor switched according to the second gate signal and connected to the initialization signal line and the sixth transistor; an eighth transistor switched according to the first emission signal and connected to the high potential voltage; a ninth transistor switched according to the second gate signal and connected to a reference line; a tenth transistor switched according to the first gate signal and connected to the reference line; a storage capacitor having a first electrode connected to the driving transistor and the third and fifth transistors, and a second electrode connected to the eighth, ninth and tenth transistors; a first light-emitting diode connected between the fourth transistor and a low potential voltage, the first light-emitting diode being disposed in the first emission area; and a second light-emitting diode connected between the sixth and seventh transistors and the low potential voltage, the first light-emitting diode being disposed in the second emission area. ### Claim 17 (depends on 1) The viewing angle switchable display device of claim 1, further comprising light-blocking patterns disposed between the display panel and the lens layer, wherein the light-blocking patterns correspond to a portion between adjacent first emission areas, a portion between adjacent second emission areas, and a portion between the first and second emission areas. ### Claim 18 (depends on 17) The viewing angle switchable display device of claim 17, wherein the light-blocking patterns are touch electrodes including a plurality of transmitter electrodes and a plurality of receiver electrodes crossing the plurality of the transmitter electrodes. ### Claim 19 (depends on 17) The viewing angle switchable display device of claim 17, further comprising a polarization layer disposed over the lens layer, the polarization layer including a linear polarization layer and a retardation layer. ### Claim 20 A viewing angle switchable display device, comprising: a display panel including first, second, and third sub-pixels, each of the first, second, and third sub-pixels having a first emission area and a second emission area; and a lens layer over the display panel and including a first lens corresponding to the first emission area and a second lens corresponding to the second emission area, wherein the first and third sub-pixels are disposed adjacent to each other in a first direction, and the second sub-pixel is disposed adjacent to the first and third sub-pixels in a second direction perpendicular to the first direction, and wherein a plurality of first lenses correspond to one first emission area, and one second lens corresponds to the second emission areas. ### Claim 21 (depends on 20) The viewing angle switchable display device of claim 20, wherein the first lens is a hemispherical lens, and the second lens is a semi-cylindrical lens. ### Claim 22 (depends on 20) The viewing angle switchable display device of claim 20, wherein the second sub-pixel is larger than the first sub-pixel and smaller than the third sub-pixel. ### Claim 23 (depends on 22) The viewing angle switchable display device of claim 22, wherein number of the first lens of the second sub-pixel is greater than number of the first lens of the first sub-pixel and smaller than number of the first lens of the third sub-pixel.