# US 8,570,310 B2 · Display panel > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,570,310 B2 - Document ID: US8570310B2 - Status: Granted - Kind: B2 - Application number: 13/081,515 - Filed: 2011-04-07 - Published: 2012-08-02 - Granted: 2013-10-29 - Earliest claimed: 2011-01-31 - Assignees: Chunghwa Picture Tubes, Ltd. - Applicants: Jiun-Jr Huang; Chin-Hai Huang; Hui-Mei Hu - Inventors: Jiun-Jr Huang; Chin-Hai Huang; Hui-Mei Hu - Web page: https://patentgrep.com/patent/US8570310B2 ## CPC - G02F 1/134336: {Matrix} - G02F 1/133555: {Transflectors} - G02F 1/134372: {for fringe field switching [FFS] where the common electrode is not patterned} - 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 A display panel have a transmissive region and a reflective region. The display panel comprises a first plate, a second plate opposite to the first plate and a display medium. The first plate comprises a first substrate, a scan line, a data line, an active device, a common electrode, a pixel electrode and a dielectric layer. The active device is electrically connected to the scan line and the data line. The pixel electrode is electrically connected to the active device and is electrically insulated from the common electrode. The pixel electrode has slits exposing the common electrode. The dielectric layer is located between the common electrode and the pixel electrode and has first openings in the reflective region. The second plate is opposite to the first plate. The display medium is located between the first plate and the second plate. ## Claims ### Claim 1 A display panel having a transmissive region and a reflective region, the display panel comprising: a first plate comprising: a first substrate; a scan line and a data line, wherein the scan line and the data line are located on the first substrate; an active device electrically connected to the scan line and the data line; a common electrode located on the first substrate; a pixel electrode electrically connected to the active device and electrically insulated from the common electrode, wherein the pixel electrode has at least a slit exposing the common electrode; and a dielectric layer located between the common electrode and the pixel electrode, wherein the dielectric layer has at least a first opening in the reflective region; a second plate opposite to the first plate, wherein the second plate has a second substrate; and a display medium located between the first plate and the second plate, wherein the slit overlaps the first opening in the reflective region. ### Claim 2 (depends on 1) The display panel of claim 1, wherein the dielectric layer has a first surface at the first opening, the dielectric layer has a second surface in the transmissive region and a distance between the first surface and the common electrode is smaller than a distance between the second surface and the common electrode. ### Claim 3 (depends on 1) The display panel of claim 1, wherein the slit aligns the first opening in the reflective region. ### Claim 4 (depends on 1) The display panel of claim 1, wherein a thickness of the dielectric layer in the transmissive region is larger than or equal to 6000 angstroms. ### Claim 5 (depends on 1) The display panel of claim 1, wherein the common electrode has a second opening in the reflective region, the dielectric layer fills in the second opening and the second opening overlaps the pixel electrode. ### Claim 6 (depends on 5) The display panel of claim 5, wherein the second opening is a through hole. ### Claim 7 (depends on 5) The display panel of claim 5, wherein a thickness of the dielectric layer in the transmissive region is smaller than or equal to 6000 angstroms. ### Claim 8 (depends on 1) The display panel of claim 1, wherein a thickness of the dielectric layer in the transmissive region is denoted as a, a depth of the first opening is denoted as b, and a and b satisfy (⅓)≦(b/a)≦(½). ### Claim 9 (depends on 1) The display panel of claim 1, wherein a dimension of a space between two adjacent first openings is denoted as c, a width of the first opening is denoted as d, and c and d satisfy 0.5≦(c/d)≦1.5. ### Claim 10 (depends on 1) The display panel of claim 1, wherein the second plate further comprises a reflective layer on the second substrate in the reflective region. ### Claim 11 (depends on 1) The display panel of claim 1, wherein the first plate further comprises a reflective layer on the first substrate in the reflective region. ### Claim 12 (depends on 1) The display panel of claim 1, further comprising a phase retarder located on the second substrate. ### Claim 13 A display panel having a transmissive region and a reflective region, the display panel comprising: a first plate comprising: a first substrate; a scan line and a data line, wherein the scan line and the data line are located on the first substrate; an active device electrically connected to the scan line and the data line; a common electrode located on the first substrate; a pixel electrode electrically connected to the active device and electrically insulated from the common electrode, wherein the pixel electrode has at least a slit exposing the common electrode; and a dielectric layer located between the common electrode and the pixel electrode, wherein the dielectric layer has at least a first opening in the reflective region; a second plate opposite to the first plate, wherein the second plate has a second substrate; and a display medium located between the first plate and the second plate, wherein the pixel electrode in the reflective region fills in the first opening, and the common electrode has a second opening in the reflective region, the dielectric layer fills in the second opening and the second opening overlaps the pixel electrode. ### Claim 14 (depends on 13) The display panel of claim 13, wherein a thickness of the dielectric layer in the transmissive region is larger than or equal to 6000 angstroms. ### Claim 15 (depends on 13) The display panel of claim 13, wherein the second opening is a through hole. ### Claim 16 (depends on 13) The display panel of claim 13, wherein a thickness of the dielectric layer in the transmissive region is smaller than or equal to 6000 angstroms.