# US 7,072,012 B2 · Liquid crystal display device including data line divided into first and second branch lines and method of fabricating the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,072,012 B2 - Document ID: US7072012B2 - Status: Granted - Kind: B2 - Application number: 10/812,054 - Filed: 2004-03-30 - Published: 2004-11-18 - Granted: 2006-07-04 - Earliest claimed: 2003-05-12 - Assignees: LG.Philips LCD Co., Ltd. - Inventors: Woo-Nam Jeong; Hyun-Suk Jin; Won-Seok Kang - Web page: https://patentgrep.com/patent/US7072012B2 ## CPC - G02F 1/1343: Electrodes {(reflective electrodes G02F1/133553)} - G02F 1/133512: {Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence)} - 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 array substrate for a liquid crystal display device includes: a substrate; a gate line on the substrate; a data line crossing the gate line to define a pixel region including a transmissive portion and a reflective portion, the data line being divided into first and second branch lines, the first and second branch lines being spaced apart from each other and disposed in the reflective portion of the adjacent pixel regions, respectively; a thin film transistor connected to the gate line and the data line; a reflective electrode corresponding to the reflective portion and covering the first and second branch lines; and a transparent electrode corresponding to the transmissive portion and connected to the reflective electrode. ## Claims ### Claim 1 An array substrate for a liquid crystal display device, comprising: a substrate; a gate line on the substrate; a data line crossing the gate line to define a pixel region including a transmissive portion and a reflective portion, the data line being divided into first and second branch lines, the first and second branch lines being spaced apart from each other and disposed in the reflective portion of the adjacent pixel regions, respectively; a thin film transistor connected to the gate line and the data line; a reflective electrode corresponding to the reflective portion and covering the first and second branch lines; and a transparent electrode corresponding to the transmissive portion and connected to the reflective electrode. ### Claim 2 (depends on 1) The substrate according to claim 1, wherein a width of the first branch line is substantially the same as a width of the second branch line. ### Claim 3 (depends on 1) The substrate according to claim 1, wherein the thin film transistor includes a gate electrode connected to the gate line, an active layer, a source electrode connected to the data line, a drain electrode connected to the reflective electrode. ### Claim 4 (depends on 3) The substrate according to claim 3, wherein the active layer includes amorphous silicon (a-Si:H). ### Claim 5 (depends on 1) The substrate according to claim 1, wherein the reflective electrode has at least one of silver (Ag), aluminum (Al) and aluminum (Al) alloy. ### Claim 6 (depends on 1) The substrate according to claim 1, wherein a surface of the reflective electrode has an unevenness. ### Claim 7 (depends on 1) The substrate according to claim 1, wherein the transparent electrode has one of indium-tin-oxide (ITO) and indium-zinc-oxide (IZO). ### Claim 8 (depends on 1) The substrate according to claim 1, wherein a space between the first and second branch lines corresponds to the transmissive portion. ### Claim 9 (depends on 1) The substrate according to claim 1, further comprising a passivation layer between the transparent electrode and the reflective electrode. ### Claim 10 (depends on 9) The substrate according to claim 9, wherein the passivation layer includes a groove corresponding to the transmissive portion. ### Claim 11 (depends on 1) The substrate according to claim 1, further comprising a color filter layer on the reflective electrode. ### Claim 12 (depends on 11) The substrate according to claim 11, wherein one of red, green and blue sub-color filters in the color filter layer corresponds to the pixel region. ### Claim 13 (depends on 11) The substrate according to claim 11, wherein the color filter layer has a first thickness in the transmissive portion and a second thickness in the reflective portion, the first thickness being substantially twice as great as the second thickness. ### Claim 14 (depends on 11) The substrate according to claim 11, further comprising a passivation layer between the transparent electrode and the reflective electrode. ### Claim 15 (depends on 14) The substrate according to claim 14, wherein the passivation layer includes a groove corresponding to the transmissive portion. ### Claim 16 A fabricating method of an array substrate for a liquid crystal display device, comprising: forming a gate line on a substrate; forming a data line crossing the gate line to define a pixel region including a transmissive portion and a reflective portion, the data line being divided into first and second branch lines, the first and second branch lines being spaced apart from each other and disposed in the reflective portion of the adjacent pixel regions, respectively; forming a thin film transistor connected to the gate line and the data line; forming a reflective electrode corresponding to the reflective portion and covering the first and second branch lines; and forming a transparent electrode corresponding to the transmissive portion and connected to the reflective electrode. ### Claim 17 (depends on 16) The method according to claim 16, wherein a width of the first branch line is substantially the same as a width of the second branch line. ### Claim 18 (depends on 16) The method according to claim 16, wherein the thin film transistor includes a gate electrode connected to the gate line, an active layer, a source electrode connected to the data line, a drain electrode connected to the reflective electrode. ### Claim 19 (depends on 16) The method according to claim 16, wherein the reflective electrode has at least one of silver (Ag), aluminum (Al) and aluminum (Al) alloy. ### Claim 20 (depends on 16) The method according to claim 16, wherein a surface of the reflective electrode has an unevenness. ### Claim 21 (depends on 16) The method according to claim 16, wherein the transparent electrode has one of indium-tin-oxide (ITO) and indium-zinc-oxide (IZO). ### Claim 22 (depends on 16) The method according to claim 16, wherein a space between the first and second branch lines corresponds to the transmissive portion. ### Claim 23 (depends on 16) The method according to claim 16, further comprising forming a passivation layer between the transparent electrode and the reflective electrode. ### Claim 24 (depends on 23) The method according to claim 23, wherein the passivation layer includes a groove corresponding to the transmissive portion. ### Claim 25 (depends on 16) The method according to claim 16, further comprising forming a color filter layer on the reflective electrode. ### Claim 26 (depends on 25) The method according to claim 25, wherein one of red, green and blue sub-color filters in the color filter layer corresponds to the pixel region. ### Claim 27 (depends on 25) The method according to claim 25, wherein the color filter layer has a first thickness in the transmissive portion and a second thickness in the reflective portion, the first thickness being substantially twice as great as the second thickness. ### Claim 28 (depends on 25) The method according to claim 25, further comprising forming a passivation layer between the transparent electrode and the reflective electrode. ### Claim 29 (depends on 28) The method according to claim 28, wherein the passivation layer includes a groove corresponding to the transmissive portion.