# US 11,114,645 B2 · Polarization member and display device including the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,114,645 B2 - Document ID: US11114645B2 - Status: Granted - Kind: B2 - Application number: 15/581,267 - Filed: 2017-04-28 - Published: 2017-11-02 - Granted: 2021-09-07 - Earliest claimed: 2016-04-29 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Jungjin Yang; Myunghwan Kim; Sunhwa Kim; Jieun Park; Wonjun Song; Kwanhee Lee; Dukjin Lee; Woosuk Jung; Heeseong Jeong - Web page: https://patentgrep.com/patent/US11114645B2 ## CPC - G02B 5/208: {for use with infrared or ultraviolet radiation, e.g. for separating visible light from infrared and/or ultraviolet radiation} - G02B 5/223: {containing organic substances, e.g. dyes, inks or pigments} - G02B 5/3033: {in the form of a thin sheet or foil, e.g. Polaroid} - G02B 5/305: {including organic materials, e.g. polymeric layers} - G02F 1/133528: {Polarisers} - G06F 3/0412: {Digitisers structurally integrated in a display} - H10K 59/38: comprising colour filters or colour changing media [CCM] - H10K 59/8792: {comprising light absorbing layers, e.g. black layers} - G02F 1/13338: {Input devices, e.g. touch panels} - H10K 59/12: Active-matrix OLED [AMOLED] displays - H10K 59/40: OLEDs integrated with touch screens - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract Provided is a display device including a display panel and a polarization member on the display panel, wherein the polarization member includes a polarizer, and a plurality of functional layers on at least one surface of the polarizer, wherein at least one of the plurality of functional layers includes a first light absorbing dye that absorbs light having a wavelength of greater than about 380 nm and equal to or less than about 450 nm. ## Claims ### Claim 1 A display device, comprising: a display panel; and a polarization member on the display panel, the polarization member including: a polarizer; and a plurality of functional layers on at least one surface of the polarizer, at least one of the plurality of functional layers including a light absorbing dye that absorbs light having a wavelength of greater than about 380 nm and equal to or less than about 450 nm, wherein the light absorbing dye includes at least two benzotriazole derivatives, the at least two benzotriazole derivatives are different from each other, and the at least two benzotriazole derivatives cause the light-absorbing dye to have a light transmittance in a wavelength range of greater than about 380 nm and equal to or less than about 400 nm of about 5% or less, and one of at least two benzotriazole derivatives has a maximum absorption wavelength in the range of 350 nm to 360 nm, and the other of at least two benzotriazole derivatives has a maximum absorption wavelength in the range of 340 nm to 350 nm and 300 nm to 310 nm. ### Claim 2 (depends on 1) The display device as claimed in claim 1, wherein the plurality of functional layers includes at least one of a λ/4 retardation layer, a λ/2 retardation layer, a protective film, an antireflection layer, a hard coating layer, a brightness enhancement film, an adhesive layer, or a surface treatment layer. ### Claim 3 (depends on 2) The display device of claim 2, wherein the adhesive layer includes the light absorbing dye. ### Claim 4 (depends on 2) The display device of claim 2, wherein: the plurality of functional layers includes the λ/4 retardation layer, the λ/2 retardation layer, and the adhesive layer, the λ/2 retardation layer and the adhesive layer are disposed between the polarizer and the λ/4 retardation layer, and the adhesive layer includes the light absorbing dye. ### Claim 5 (depends on 4) The display device of claim 4, wherein the adhesive layer is disposed between the λ/4 retardation layer and the λ/2 retardation layer. ### Claim 6 (depends on 4) The display device of claim 4, wherein the adhesive layer is disposed between the polarizer and the λ/2 retardation layer. ### Claim 7 (depends on 1) The display device as claimed in claim 1, wherein the at least two benzotriazole derivatives cause the light-absorbing dye to have a light transmittance in a wavelength range of about 400 nm to about 410 nm of about 65% or less. ### Claim 8 (depends on 1) The display device as claimed in claim 1, wherein the at least two benzotriazole derivatives cause the light-absorbing dye to have a light transmittance in a wavelength range of about 410 nm to about 780 nm of about 65% to about 100%. ### Claim 9 (depends on 1) The display device as claimed in claim 1, further comprising a second adhesive layer disposed between the display panel and the polarization member, the second adhesive layer including a second light absorbing dye that absorbs light having a wavelength of greater than about 380 nm and equal to or less than about 450 nm. ### Claim 10 (depends on 9) The display device as claimed in claim 9, wherein the second light absorbing dye is the same as the light absorbing dye. ### Claim 11 (depends on 9) The display device as claimed in claim 9, wherein the second adhesive layer has a light transmittance in a wavelength range of greater than about 380 nm and equal to or less than about 400 nm of about 5% or less, and has a light transmittance in a wavelength range of about 400 nm to about 410 nm of about 65% or less. ### Claim 12 (depends on 9) The display device as claimed in claim 9, wherein the second adhesive layer has a light transmittance in a wavelength range of about 410 nm to about 780 nm of about 65% to about 100%. ### Claim 13 (depends on 9) The display device of claim 9, further comprising a touch sensing unit disposed between the display panel and the polarization member, wherein the second adhesive layer is disposed between the display panel and the touch sensing unit. ### Claim 14 (depends on 1) The display device as claimed in claim 1, further comprising: a window member on the polarization member; and a third adhesive layer disposed between the polarization member and the window member, the third adhesive layer including a third light absorbing dye that absorbs light having a wavelength of greater than about 380 nm and equal to or less than about 450 nm. ### Claim 15 (depends on 14) The display device as claimed in claim 14, wherein the third light absorbing dye is the same as the light absorbing dye. ### Claim 16 (depends on 14) The display device as claimed in claim 14, wherein the third adhesive layer has a light transmittance in a wavelength range of greater than about 380 nm and equal to or less than about 400 nm of about 5% or less, and has a light transmittance in a wavelength range of about 400 nm to about 410 nm of about 65% or less. ### Claim 17 (depends on 14) The display device as claimed in claim 14, wherein the third adhesive layer has a light transmittance in a wavelength range of about 410 nm to about 780 nm of about 65% to about 100%. ### Claim 18 (depends on 14) The display device of claim 14, further comprising a touch sensing unit disposed between the polarization member and the window member, wherein: the third adhesive layer includes a first sub-adhesive layer disposed between the polarization member and the touch sensing unit and a second sub-adhesive layer disposed between the touch sensing unit and the window member, and at least one of the first sub-adhesive layer or the second sub-adhesive layer includes the third light absorbing dye. ### Claim 19 (depends on 14) The display device of claim 14, further comprising a touch sensing unit disposed between the display panel and the polarization member, wherein the touch sensing unit is directly disposed on the display panel. ### Claim 20 (depends on 1) The display device as claimed in claim 1, wherein the display panel includes: a first electrode; an organic layer that is on the first electrode and includes an emission layer; a second electrode on the organic layer; a capping layer on the second electrode; and an encapsulation layer on the capping layer, wherein the capping layer includes another light absorbing dye, which absorbs light having a wavelength of greater than about 380 nm and equal to or less than about 450 nm, or an organic material. ### Claim 21 (depends on 20) The display device as claimed in claim 20, wherein the encapsulation layer includes glass. ### Claim 22 (depends on 20) The display device as claimed in claim 20, wherein the capping layer has a light transmittance in a wavelength range of about 400 nm to about 410 nm of about 65% or less. ### Claim 23 (depends on 20) The display device as claimed in claim 20, wherein the capping layer has a light transmittance in a wavelength range of about 410 nm to about 780 nm of about 65% to about 100%. ### Claim 24 A display device, comprising: a display panel; and a polarization member on the display panel, the polarization member including a light absorbing dye that absorbs light having a wavelength of greater than about 380 nm and equal to or less than about 450 nm, wherein the light absorbing dye includes at least two benzotriazole derivatives, the at least two benzotriazole derivatives are different from each other, and the at least two benzotriazole derivatives cause the polarization member to have a light transmittance in a wavelength range of greater than about 380 nm and equal to or less than about 400 nm of about 5% or less, and one of at least two benzotriazole derivatives has a maximum absorption wavelength in the range of 350 nm to 360 nm, and the other of at least two benzotriazole derivatives has a maximum absorption wavelength in the range of 340 nm to 350 nm and 300 nm to 310 nm. ### Claim 25 (depends on 24) The display device as claimed in claim 24, wherein the at least two benzotriazole derivatives cause the polarization member to have a light transmittance in a wavelength range of about 400 nm to about 410 nm of about 65% or less. ### Claim 26 (depends on 24) The display device as claimed in claim 24, wherein the at least two benzotriazole derivatives cause the polarization member to have a light transmittance in a wavelength range of about 410 nm to about 780 nm of about 65% to about 100%. ### Claim 27 (depends on 24) The display device as claimed in claim 24, further comprising an adhesive layer on at least one surface of the polarization member, the adhesive layer including another light absorbing dye having at least two benzotriazole derivatives that absorbs light having a wavelength of greater than about 380 nm and equal to or less than about 450 nm. ### Claim 28 (depends on 27) The display device as claimed in claim 27, wherein the another light absorbing dye is the same as the light absorbing dye for the polarization layer. ### Claim 29 (depends on 27) The display device as claimed in claim 27, wherein the adhesive layer has a light transmittance in a wavelength range of about 400 nm to about 410 nm of about 65% or less. ### Claim 30 (depends on 27) The display device as claimed in claim 27, wherein the adhesive layer has a light transmittance in a wavelength range of about 410 nm to about 780 nm of about 65% to about 100%. ### Claim 31 A display device, comprising: a display panel, the display panel including: a first electrode; an organic layer that is on the first electrode and includes an emission layer; a second electrode on the organic layer; a capping layer on the second electrode; and an encapsulation layer on the capping layer, and a polarization member on the display panel, the polarization member including: a polarizer; and a plurality of functional layers on at least one surface of the polarizer, wherein at least one of the plurality of functional layers or the capping layer includes a light absorbing dye that absorbs light having a wavelength of greater than about 380 nm and equal to or less than about 450 nm, and wherein the light absorbing dye includes at least two benzotriazole derivatives, the at least two benzotriazole derivatives are different from each other, and the least two benzotriazole derivatives cause the light-absorbing dye to have a light transmittance in a wavelength range of greater than about 380 nm and equal to or less than about 400 nm of about 5% or less, and one of at least two benzotriazole derivatives has a maximum absorption wavelength in the range of 350 nm to 360 nm, and the other of at least two benzotriazole derivatives has a maximum absorption wavelength in the range of 340 nm to 350 nm and 300 nm to 310 nm.