# US 11,307,610 B2 · Display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,307,610 B2 - Document ID: US11307610B2 - Status: Granted - Kind: B2 - Application number: 17/036,648 - Filed: 2020-09-29 - Published: 2021-09-23 - Granted: 2022-04-19 - Earliest claimed: 2020-03-18 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., LTD. - Inventors: Duk Jin Lee; Beong Hun Beon - Web page: https://patentgrep.com/patent/US11307610B2 ## CPC - G06F 1/1609: {to support filters or lenses} - G02B 1/14: Protective coatings, e.g. hard coatings - G02B 5/3033: {in the form of a thin sheet or foil, e.g. Polaroid} - G06F 1/1652: {the display being flexible, e.g. mimicking a sheet of paper, or rollable} - G06F 1/1656: {Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories (mounting of accessories to a computer display G06F1/1607; display hoods G06F1/1603; cooling arrangements for portable computers G06F1/203)} - G09F 9/301: {flexible foldable or roll-able electronic displays, e.g. thin LCD, OLED} - Y02E 10/549: Organic PV cells - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract A display device may comprise a display panel including one surface at a front side of the display panel and another surface at a rear side of the display panel, a front stacked structure disposed on the surface of the display panel, and a rear stacked structure disposed on the another surface of the display panel. The front stacked structure may include a polarizing member disposed on the surface of the display panel, and an impact absorbing layer disposed on the polarizing member. The polarizing member may include at least one phase retardation layer disposed on the surface of the display panel, a polarization layer disposed between the at least one phase retardation layer and the impact absorbing layer, and a first polarization protection layer disposed between the polarization layer and the impact absorbing layer. ## Claims ### Claim 1 A display device comprising: a display panel including: a surface at a front side of the display panel; and another surface at a rear side of the display panel; a front stacked structure disposed on the surface of the display panel; and a rear stacked structure disposed on the another surface of the display panel, wherein the front stacked structure includes: a polarizing member disposed on the surface of the display panel; and an impact absorbing layer disposed on the polarizing member, the polarizing member includes: at least one phase retardation layer disposed on the surface of the display panel; a polarization layer disposed between the at least one phase retardation layer and the impact absorbing layer; and a first polarization protection layer disposed between the polarization layer and the impact absorbing layer, and an angle between an absorption axis of the polarization layer and a phase retardation axis of the impact absorbing layer is in a range of about −10 degrees to about 10 degrees. ### Claim 2 (depends on 1) The display device of claim 1, wherein the polarization layer has a rectangular shape having long sides extending along a first direction and short sides extending along a second direction intersecting the first direction, and the absorption axis of the polarization layer extends in a direction between the first direction and the second direction. ### Claim 3 (depends on 2) The display device of claim 2, wherein the impact absorbing layer is formed through a film stretching process. ### Claim 4 (depends on 3) The display device of claim 3, wherein the film stretching process includes: a first stretching for stretching the impact absorbing layer along one direction; and a second stretching for stretching the impact absorbing layer along another direction. ### Claim 5 (depends on 4) The display device of claim 4, wherein a first elongation rate of the first stretching is less than a second elongation rate of the second stretching. ### Claim 6 (depends on 5) The display device of claim 5, wherein a refractive index of the impact absorbing layer in the other direction is greater than a refractive index of the impact absorbing layer in the one direction. ### Claim 7 (depends on 6) The display device of claim 6, wherein the phase retardation axis of the impact absorbing layer is the same as the another direction of the second stretching in the film stretching process. ### Claim 8 (depends on 3) The display device of claim 3, wherein the at least one phase retardation layer includes a first phase retardation layer disposed between the surface of the display panel and the polarization layer, and the first phase retardation layer retards a phase of incident light by λ/4, where λ is a wavelength of the incident light. ### Claim 9 (depends on 8) The display device of claim 8, wherein the at least one phase retardation layer includes a second phase retardation layer disposed between the first phase retardation layer and the polarization layer, and the second phase retardation layer retards a phase of incident light by λ/2. ### Claim 10 (depends on 3) The display device of claim 3, wherein the polarizing member further includes a second polarization protection layer disposed between the polarization layer and the phase retardation layer. ### Claim 11 (depends on 10) The display device of claim 10, wherein the front stacked structure further includes a cover window disposed on the impact absorbing layer. ### Claim 12 (depends on 10) The display device of claim 10, wherein the rear stacked structure includes: a lower flexible film disposed on the another surface of the display panel; and a cushion layer spaced apart from the display panel, the lower flexible film being disposed between the cushion layer and the display panel. ### Claim 13 (depends on 12) The display device of claim 12, wherein the rear stacked structure further includes at least one metal plate spaced apart from the lower flexible film, the cushion layer being disposed between the at least one metal plate and the lower flexible film. ### Claim 14 (depends on 13) The display device of claim 13, wherein the display device further includes: a folding area; a first unfolding area at a side of the folding area in the first direction; and a second unfolding area at another side of the folding area in the first direction. ### Claim 15 (depends on 14) The display device of claim 14, wherein the at least one metal plate includes: a first metal plate disposed in the first unfolding area; and a second metal plate disposed in the second unfolding area, wherein the first metal plate and the second metal plate are spaced apart from each other, and the folding area is disposed between the first metal plate and the second metal plate. ### Claim 16 A display device comprising: a display panel including: a surface at a front side of the display panel; and another surface at a rear side of the display panel; a front stacked structure disposed on the surface of the display panel; and a rear stacked structure disposed on the another surface of the display panel, wherein the front stacked structure includes: a polarizing member disposed on the surface of the display panel; and an impact absorbing layer disposed on the polarizing member, the polarizing member includes: at least one phase retardation layer disposed on the surface of the display panel; a polarization layer disposed between the at least one phase retardation layer and the impact absorbing layer; and a polarization protection layer disposed between the polarization layer and the impact absorbing layer, and an angle between an absorption axis of the polarization layer and a phase retardation axis of the impact absorbing layer is in a range of about 80 degrees to about 100 degrees. ### Claim 17 (depends on 16) The display device of claim 16, wherein the polarization layer has a rectangular shape having long sides extending along a first direction and short sides extending along a second direction intersecting the first direction, and the absorption axis of the polarization layer extends in a direction between the first direction and the second direction. ### Claim 18 (depends on 17) The display device of claim 17, wherein the impact absorbing layer is formed through a film stretching process. ### Claim 19 (depends on 18) The display device of claim 18, wherein the film stretching process includes: a first stretching for stretching the impact absorbing layer along one direction; and a second stretching for stretching the impact absorbing layer along another direction, and a first elongation rate of the first stretching is less than a second elongation rate of the second stretching. ### Claim 20 (depends on 19) The display device of claim 19, wherein a refractive index of the impact absorbing layer in the other direction is greater than a refractive index of the impact absorbing layer in the one direction, and the phase retardation axis of the impact absorbing layer is the same as the another direction of the second stretching in the film stretching process.