# US 2017/0255041 A1 · Liquid crystal display panel and driving method thereof > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0255041 A1 - Document ID: US20170255041A1 - Status: Published application - Kind: A1 - Application number: 15/275,634 - Filed: 2016-09-26 - Published: 2017-09-07 - Earliest claimed: 2016-03-07 - Assignees: Au Optronics Corporation - Applicants: Au Optronics Corporation - Inventors: Wan-Heng CHANG; Chen-Feng FAN; Sung-Yu SU; Hsiao-Wei CHENG - Web page: https://patentgrep.com/patent/US20170255041A1 ## CPC - G02F 1/1323: {Arrangements for providing a switchable viewing angle} - G02F 1/13306: {Circuit arrangements or driving methods for the control of single liquid crystal cells (G02F1/132, G02F1/133382 take precedence)} - G02F 1/133512: {Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence)} - G02F 1/133514: {Colour filters} - G02F 1/134309: {characterised by their geometrical arrangement} - G02F 1/134336: {Matrix} - G02F 1/13439: {characterised by their electrical, optical, physical properties; materials therefor; method of making} - G06F 3/0412: {Digitisers structurally integrated in a display} - G06F 3/0416: {Control or interface arrangements specially adapted for digitisers} - G09G 3/3614: {Control of polarity reversal in general} - G02F 1/13338: {Input devices, e.g. touch panels} - G02F 1/134381: {Hybrid switching mode, i.e. for applying an electric field with components parallel and orthogonal to the substrates} - G02F 1/136286: {Wiring, e.g. gate line, drain line} - G02F 1/1368: in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} - G02F 2201/121: common or background - G02F 2201/123: pixel - G02F 2201/52: RGB geometrical arrangements - G06F 2203/04107: Shielding in digitiser, i.e. guard or shielding arrangements, mostly for capacitive touchscreens, e.g. driven shields, driven grounds - G09G 2320/028: by changing the viewing angle properties, e.g. widening the viewing angle, adapting the viewing angle to the view direction - G09G 2320/066: for control of contrast - G09G 2320/068: for control of viewing angle adjustment - G09G 2358/00: Arrangements for display data security - 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) - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) ## Abstract A liquid crystal display panel includes first and second substrates, first pixel electrodes, second pixel electrodes, common electrodes, first auxiliary electrodes, and a liquid crystal layer. The second substrate is disposed opposite to the first substrate. The liquid crystal layer is disposed between the first and the second substrates. The first pixel electrodes, the second pixel electrodes, and the common electrodes are disposed on the first substrate. The first auxiliary electrodes are disposed on the second substrate. One of the first pixel electrodes is not overlapping one of the first auxiliary electrodes in a vertical projection direction. A driving method of the liquid crystal display panel includes setting a first voltage difference in a wide viewing mode and a second voltage difference in a narrow viewing mode between the first auxiliary electrodes and the common electrodes and, respectively. The first voltage difference is less than the second voltage difference. ## Claims ### Claim 1 A liquid crystal display panel, comprising: a first substrate; a plurality of first pixel electrodes and a plurality of second pixel electrodes, disposed on the first substrate; a plurality of common electrodes, disposed on the first substrate; a second substrate, disposed opposite to the first substrate; a plurality of first auxiliary electrodes, disposed on the second substrate, wherein one of the first pixel electrodes is not overlapping one of the first auxiliary electrodes in a vertical projection direction; and a liquid crystal layer, disposed between the first substrate and the second substrate. ### Claim 2 (depends on 1) The liquid crystal display panel of claim 1, wherein one of the second pixel electrodes overlaps one of the first auxiliary electrodes in the vertical projection direction. ### Claim 3 (depends on 2) The liquid crystal display panel of claim 2, wherein the first pixel electrodes are arranged along a first direction to form a plurality of first pixel electrode sets, the second pixel electrodes are arranged along the first direction to form a plurality of second pixel electrode sets, and the first pixel electrode sets and the second pixel electrode sets are alternately arranged along a second direction. ### Claim 4 (depends on 2) The liquid crystal display panel of claim 2, wherein the first pixel electrodes and the second pixel electrodes are alternately arranged along a first direction and a second direction. ### Claim 5 (depends on 2) The liquid crystal display panel of claim 2, wherein a number of the first pixel electrodes is the same as a number of the second pixel electrodes. ### Claim 6 (depends on 5) The liquid crystal display panel of claim 5, wherein the first pixel electrodes correspond to a first color, a second color, and a third color, respectively, and the second pixel electrodes correspond to the first color, the second color, and the third color, respectively; and the number of the first pixel electrodes and the number of the second pixel electrodes corresponding to the same color are the same. ### Claim 7 (depends on 2) The liquid crystal display panel of claim 2, wherein a number of the first pixel electrodes is ⅓, ⅔, or ½ of a total number of the first pixel electrodes and the second pixel electrodes. ### Claim 8 (depends on 7) The liquid crystal display panel of claim 7, wherein the number of the first pixel electrodes is ⅓ of the total number of the first pixel electrodes and the second pixel electrodes, and one of the first pixel electrodes and two of the second pixel electrodes are sequentially arranged along a first direction to form a repeating unit, thereby forming a plurality of repeating units. ### Claim 9 (depends on 2) The liquid crystal display panel of claim 2, further comprising: a plurality of second auxiliary electrodes, disposed on the second substrate and electrically isolated from the first auxiliary electrodes, wherein the second auxiliary electrodes overlap the first pixel electrodes in the vertical projection direction respectively. ### Claim 10 (depends on 9) The liquid crystal display panel of claim 9, wherein the second pixel electrodes are not overlapping the second auxiliary electrodes in the vertical projection direction. ### Claim 11 (depends on 9) The liquid crystal display panel of claim 9, further comprising: a color filter layer, disposed on the second substrate, wherein the first auxiliary electrodes are disposed between the color filter layer and the second substrate, and the second auxiliary electrodes are disposed between the color filter layer and the liquid crystal layer. ### Claim 12 (depends on 11) The liquid crystal display panel of claim 11, further comprising: a patterned light-shielding layer, disposed on the second substrate; and a protection layer, disposed on the second substrate and covering the first auxiliary electrodes, the color filter layer, and the patterned light-shielding layer. ### Claim 13 (depends on 12) The liquid crystal display panel of claim 12, wherein the second auxiliary electrodes are at least partially disposed between the color filter layer and the protection layer. ### Claim 14 (depends on 13) The liquid crystal display panel of claim 13, wherein the second auxiliary electrodes are further at least partially disposed between the color filter layer and the patterned light-shielding layer. ### Claim 15 (depends on 13) The liquid crystal display panel of claim 13, wherein the second auxiliary electrodes are further at least partially disposed between the patterned light-shielding layer and the protection layer. ### Claim 16 (depends on 12) The liquid crystal display panel of claim 12, wherein the second auxiliary electrodes are at least partially disposed between the protection layer and the liquid crystal layer. ### Claim 17 (depends on 1) A driving method of a liquid crystal display panel, comprising: providing the liquid crystal display panel of claim 1; in a wide viewing angle mode, providing a first voltage difference between the first auxiliary electrodes and the common electrodes; and in a narrow viewing angle mode, providing a second voltage difference between the first auxiliary electrodes and the common electrodes, wherein the first voltage difference is less than the second voltage difference. ### Claim 18 (depends on 17) The driving method of the liquid crystal display panel of claim 17, wherein one of the second pixel electrodes overlaps one of the first auxiliary electrodes in the vertical projection direction. ### Claim 19 (depends on 18) The driving method of the liquid crystal display panel of claim 18, wherein the second pixel electrodes comprise a plurality of first polarity pixel electrodes and a plurality of second polarity pixel electrodes, a driving polarity of the first polarity pixel electrodes is opposite to a driving polarity of the second polarity pixel electrodes, each of the first auxiliary electrodes is disposed corresponding to one of the first polarity pixel electrodes or one of the second polarity pixel electrodes, and a number of the first polarity pixel electrodes is the same as a number of the second polarity pixel electrodes. ### Claim 20 (depends on 18) The driving method of the liquid crystal display panel of claim 18, wherein the first pixel electrodes comprise a plurality of third polarity pixel electrodes and a plurality of fourth polarity pixel electrodes, a driving polarity of the third polarity pixel electrode is opposite to a driving polarity of the fourth polarity pixel electrode, and a number of the third polarity pixel electrodes is the same as a number of the fourth polarity pixel electrodes. ### Claim 21 (depends on 18) The driving method of the liquid crystal display panel of claim 18, further comprising: performing a touch detection by utilizing at least a portion of at least one the first pixel electrodes and the common electrodes. ### Claim 22 (depends on 18) The driving method of the liquid crystal display panel of claim 18, wherein the liquid crystal display panel further comprises: a plurality of second auxiliary electrodes, disposed on the second substrate and electrically isolated from the first auxiliary electrodes, wherein the second auxiliary electrodes overlap the first pixel electrodes in the vertical projection direction respectively. ### Claim 23 (depends on 22) The driving method of the liquid crystal display panel of claim 22, further comprising: performing a force touch detection by utilizing the second auxiliary electrodes.