# US 2014/0152943 A1 · Display With Shielding Antireflection Layer > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0152943 A1 - Document ID: US20140152943A1 - Status: Published application - Kind: A1 - Application number: 13/690,304 - Filed: 2012-11-30 - Published: 2014-06-05 - Earliest claimed: 2012-11-30 - Assignees: Apple Inc. - Applicants: Apple Inc. - Inventors: Enkhamgalan Dorjgotov; Masato Kuwabara; Cheng Chen; Wei Chen; John Z. Zhong - Web page: https://patentgrep.com/patent/US20140152943A1 ## CPC - H05B 33/22: characterised by the chemical or physical composition or the arrangement of auxiliary dielectric or reflective layers - G02F 1/133502: {Antiglare, refractive index matching layers} - G02F 2202/22: Antistatic materials or arrangements - H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL - 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 ## Abstract An electronic device may be provided with a display such as a liquid crystal display. The liquid crystal display may have a color filter layer, a thin-film-transistor layer, and a layer of liquid crystal material between the color filter layer and the thin-film-transistor layer. A lower polarizer may be formed under the thin-film-transistor layer. An upper polarizer may be formed on the color filter layer. A shielding antireflection layer may be formed on the upper polarizer. The shielding antireflection layer may serve both as a shielding layer that protects against display damage due to electrostatic charge and as an antireflection coating that helps to minimize reflections from the surface of the display. The shielding antireflection layer may include low and high index of refraction layers and a conductive layer such as a transparent conductive oxide layer that provides shielding. ## Claims ### Claim 1 A display, comprising: a display layer; a polarizer layer on the display layer; and a shielding antireflection film on the polarizer layer, wherein the shielding antireflection film includes a plurality of dielectric layers and a transparent conductive layer. ### Claim 2 (depends on 1) The display defined in claim 1 wherein the shielding antireflection film includes at least one layer of silicon dioxide. ### Claim 3 (depends on 2) The display defined in claim 2 wherein the shielding antireflection film includes at least one niobium pentoxide layer. ### Claim 4 (depends on 3) The display defined in claim 3 wherein the transparent conductive layer comprises a conductive oxide. ### Claim 5 (depends on 4) The display defined in claim 4 wherein the transparent conductive layer comprises indium tin oxide. ### Claim 6 (depends on 1) The display defined in claim 1 wherein the shielding antireflection layer includes six layers of material including five dielectric layers and an indium tin oxide layer. ### Claim 7 (depends on 6) The display defined in claim 6 wherein three of the five dielectric layers comprise silicon dioxide. ### Claim 8 (depends on 7) The display defined in claim 7 wherein two of the five dielectric layers comprise niobium pentoxide. ### Claim 9 (depends on 6) The display defined in claim 6 wherein three of the five dielectric layers comprise low index of refraction layers and where two of the five dielectric layers have indices of refraction that are greater than the low index of refraction layers. ### Claim 10 (depends on 9) The display defined in claim 9 wherein the indium tin oxide layer is interposed between one of the three low index of refraction layers and one of the two dielectric layers having indices of refraction greater than the low index of refraction layers. ### Claim 11 (depends on 10) The display defined in claim 10 further comprising conductive structures that short the indium tin oxide layer to ground. ### Claim 12 (depends on 11) The display defined in claim 11 wherein the conductive structures comprise at least one metal pin that that penetrates the shielding antireflection layer. ### Claim 13 A display, comprising: a color filter layer; a thin-film-transistor layer; a layer of liquid crystal material between the color filter layer and the thin-film transistor layer; a polarizer on the color filter layer; and a shielding antireflection layer on the polarizer, wherein the shielding antireflection layer includes a conductive oxide layer configured to serve as an electrostatic shielding layer and includes a plurality of dielectric layers. ### Claim 14 (depends on 13) The display defined in claim 13 wherein the dielectric layers are interposed between the conductive oxide layer and the polarizer. ### Claim 15 (depends on 16) The display defined in claim 16 further comprising a layer of dielectric on the conductive oxide layer. ### Claim 16 (depends on 15) The display defined in claim 15 wherein the layer of dielectric on the conductive oxide layer comprises a layer of silicon dioxide. ### Claim 17 (depends on 16) The display defined in claim 16 wherein the dielectric layers that are interposed between the conductive oxide layer and the polarizer include a plurality of low index of refraction layers and a plurality of high index of refraction layers each having an index of refraction greater than the low index of refraction layers. ### Claim 18 (depends on 17) The display defined in claim 17 wherein the conductive oxide layer is formed on one of the high index of refraction layers. ### Claim 19 An electronic device, comprising: a liquid crystal display having an upper polarizer with an upper surface; and a plurality of layers of material on the upper surface configured to form an antireflection coating for the liquid crystal display, wherein the plurality of layers of material include a plurality of dielectric layers including a plurality of low index of refraction layers and a plurality of high index of refraction layers each having an index of refraction greater than the low index of refraction layers and wherein the plurality of layers includes a conductive transparent layer on the plurality of dielectric layers. ### Claim 20 (depends on 19) The electronic device defined in claim 19 further comprising an additional low index of refraction layer on top of the conductive transparent layer.