# US 2010/0164935 A1 · Liquid crystal display apparatus, liquid crystal display panel and driving method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2010/0164935 A1 - Document ID: US20100164935A1 - Status: Published application - Kind: A1 - Application number: 12/647,058 - Filed: 2009-12-24 - Published: 2010-07-01 - Earliest claimed: 2008-12-25 - Assignees: Chi Mei Optoelectronics Corp. - Inventors: Rung-Nan LU; Fu-Yuan HSIAO - Web page: https://patentgrep.com/patent/US20100164935A1 ## CPC - G09G 3/36: using liquid crystals - G02F 1/136209: {Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element} - G02F 1/133388: {with constructional differences between the display region and the peripheral region} - G02F 1/133601: {for spatial active dimming} - G02F 1/136204: {Arrangements to prevent high voltage or static electricity failures} - G02F 1/136222: {Colour filters incorporated in the active matrix substrate} - G09G 2310/0232: Special driving of display border areas - G09G 2320/0238: Improving the black level - G09G 2320/0606: Manual adjustment - G09G 2320/0626: for control of overall brightness - G09G 2330/021: Power management, e.g. power saving - 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) - 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 In a display apparatus having a display zone and a light-shielding zone, the light-shielding zone includes an electrically controlled material having a controllable light shielding rate and being controlled to change its light shielding rate in accordance with a control signal. ## Claims ### Claim 1 A driving method of driving a display apparatus comprising a display zone and a light-shielding zone disposed adjacent to at least one side of the display zone, the light-shielding zone comprising an electrically controlled material having a controllable light shielding rate, said driving method comprising: controlling the light shielding rate of said electrically controlled material in the light-shielding zone to shield light in accordance with a control signal. ### Claim 2 (depends on 1) The driving method of claim 1, wherein the light-shielding zone is disposed around the display zone. ### Claim 3 (depends on 1) The driving method of claim 1, wherein said electrically controlled material is a liquid crystal layer. ### Claim 4 (depends on 1) The driving method of claim 1, wherein the display apparatus comprises a first electrode in both the display zone and the light-shielding zone; a second electrode in at least the display zone; and said electrically controlled material between said first and second electrodes in the display zone for displaying images in accordance with an image control signal. ### Claim 5 (depends on 4) The driving method of claim 4, wherein the second electrode is also present in the light-shielding zone. ### Claim 6 (depends on 5) The driving method of claim 5, wherein said control signal is generated in accordance with the image control signal. ### Claim 7 (depends on 5) The driving method of claim 5, wherein said control signal comprises an electric potential difference between the first and second electrodes in the light-shielding zone, and the driving method comprises controlling the light shielding rate of said electrically controlled material in the light-shielding zone to shield light in accordance with said electric potential difference between the first and second electrodes. ### Claim 8 (depends on 4) The driving method of claim 4, wherein the material of the electrodes is one selected from the group consisting of tin-doped indium oxide (ITO), indium zinc oxide (IZO) and aluminum zinc oxide (AZO). ### Claim 9 (depends on 4) The driving method of claim 4, wherein the second electrode is a non-transparent conductive layer. ### Claim 10 (depends on 4) The driving method of claim 4, further comprising: generating the control signal based on a user- or system-inputted covering-zone operating signal. ### Claim 11 (depends on 10) The driving method of claim 10, wherein the display apparatus further comprises a light-shielding-zone signal control module, and the control signal is outputted by the light-shielding-zone signal control module upon receiving the user- or system-inputted covering-zone operating signal. ### Claim 12 (depends on 4) The driving method of claim 4, wherein the light shielding rate of said electrically controlled material in the light-shielding zone is higher than in the display zone when the display zone is displaying the images. ### Claim 13 A display apparatus, comprising: a display zone, a light-shielding zone disposed adjacent to at least one side of the display zone, the light-shielding zone comprising an electrically controlled material having a controllable light shielding rate, and a control circuit for controlling the light shielding rate of said electrically controlled material in the light-shielding zone to shield light in accordance with a control signal. ### Claim 14 (depends on 13) The display apparatus of claim 13, wherein the light-shielding zone is disposed around the display zone. ### Claim 15 (depends on 13) The display apparatus of claim 13, wherein said electrically controlled material is a liquid crystal layer. ### Claim 16 (depends on 13) The display apparatus of claim 13, further comprising: a first electrode in both the display zone and the light-shielding zone; a second electrode in at least the display zone; and said electrically controlled material between said first and second electrodes in the display zone for displaying images in accordance with an image control signal. ### Claim 17 (depends on 16) The display apparatus of claim 16, wherein said control signal is generated in accordance with the image control signal. ### Claim 18 (depends on 16) The display apparatus of claim 16, wherein the second electrode is also present in the light-shielding zone. ### Claim 19 (depends on 18) The display apparatus of claim 18, wherein said control signal comprises an electric potential difference between the first and second electrodes in the light-shielding zone, and said control circuit is arranged for controlling the light shielding rate of said electrically controlled material in the light-shielding zone to shield light in accordance with said electric potential difference between the first and second electrodes. ### Claim 20 (depends on 16) The display apparatus of claim 16, wherein the material of the electrodes is one selected from the group consisting of tin-doped indium oxide (ITO), indium zinc oxide (IZO) and aluminum zinc oxide (AZO). ### Claim 21 (depends on 16) The display apparatus of claim 16, wherein the second electrode is a non-transparent conductive layer. ### Claim 22 (depends on 13) The display apparatus of claim 13, further comprising: a light-shielding-zone signal control module for receiving a user- or system-inputted covering-zone operating signal and outputting a light-shielding-zone control adjustment signal, as said control signal, to change the light shielding rate of the electrically controlled material of the light-shielding zone. ### Claim 23 (depends on 16) The display apparatus of claim 16, wherein the light shielding rate of said electrically controlled material in the light-shielding zone is higher than in the display zone when the display zone is displaying the images. ### Claim 24 (depends on 5) The driving method of claim 5, wherein the second electrode is a non-transparent conductive layer. ### Claim 25 (depends on 18) The display apparatus of claim 18, wherein the second electrode is a non-transparent conductive layer.