# US 2015/0145895 A1 · Display apparatus and method of displaying an image using the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2015/0145895 A1 - Document ID: US20150145895A1 - Status: Published application - Kind: A1 - Application number: 14/271,736 - Filed: 2014-05-07 - Published: 2015-05-28 - Earliest claimed: 2013-11-27 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., LTD. - Inventors: Byeong-Hee WON; Rang-Kyun MOK; Jong-In BAEK - Web page: https://patentgrep.com/patent/US20150145895A1 ## CPC - G09G 3/36: using liquid crystals - G09G 3/3406: {Control of illumination source (illumination devices structurally associated with liquid crystal cells G02F1/1336)} - G09G 3/2003: {Display of colours (specific for liquid crystal displays G09G3/3607)} - G09G 2320/0646: Modulation of illumination source brightness and image signal correlated to each other - G09G 2320/0666: for control of colour parameters, e.g. colour temperature - G09G 2380/08: Biomedical applications - 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 display apparatus includes a display panel, an illumination part, an illumination controller, a luminance compensation part and a data driver. The display panel includes data lines, and is configured to display an image in a first direction. The illumination part is configured to emit illumination light having a first color in a second direction opposite to the first direction. The illumination controller is configured to control the illumination part and output an illumination signal corresponding to an intensity of the illumination light. The luminance compensation part is configured to compensate luminance of an input image data based on the illumination signal to output a data signal, and the data driver is configured to generate a data voltage based on the data signal, and output the data voltage to the data lines. ## Claims ### Claim 1 A display apparatus comprising: a display panel comprising data lines, and configured to display an image in a first direction; an illumination part configured to emit illumination light having a first color in a second direction opposite to the first direction; an illumination controller configured to control the illumination part and output an illumination signal corresponding to an intensity of the illumination light; a luminance compensation part configured to compensate luminance of an input image data based on the illumination signal to output a data signal; and a data driver configured to generate a data voltage based on the data signal, and output the data voltage to the data lines. ### Claim 2 (depends on 1) The display apparatus of claim 1, wherein the input image data comprises red image data, green image data and blue image data, and the luminance compensation part decreases luminance of the blue image data based on the illumination signal. ### Claim 3 (depends on 2) The display apparatus of claim 2, wherein the luminance compensation part comprises a first look-up table comprising values of a luminance decrease rate of the blue image data corresponding to the illumination signal. ### Claim 4 (depends on 1) The display apparatus of claim 1, wherein the input image data comprises red image data, green image data and blue image data, and the luminance compensation part decreases luminance of the blue image data and the green image data, and increases luminance of the red image data, based on the illumination signal. ### Claim 5 (depends on 4) The display apparatus of claim 4, wherein the luminance compensation part comprises: a first look-up table comprising values of a luminance decrease rate of the blue image data corresponding to the illumination signal; a second look-up table comprising values of a luminance decrease rate of the green image data corresponding to the illumination signal; and a third look-up table comprising values of a luminance increase rate of the red image data corresponding to the illumination signal. ### Claim 6 (depends on 4) The display apparatus of claim 4, wherein a luminance decrease rate of the blue image data corresponds to a grayscale level of the blue image data, a luminance decrease rate of the green image data corresponds to a grayscale level of the green image data, and a luminance increase rate of the red image data corresponds to a grayscale level of the red image data. ### Claim 7 (depends on 1) The display apparatus of claim 1, wherein the intensity of the illumination light in a wavelength range of about 500 nanometers to about 800 nanometers is greater than the intensity of the illumination light in a wavelength range of about 380 nanometers to about 500 nanometers. ### Claim 8 (depends on 7) The display apparatus of claim 7, wherein the intensity of the illumination light at a wavelength in the wavelength range of about 500 nanometers to about 800 nanometers increases, as the wavelength increases. ### Claim 9 (depends on 1) The display apparatus of claim 1, wherein the illumination part comprises a light source configured to generate the illumination light, and the illumination controller outputs the illumination signal based on the number of the light source in a turn-on state. ### Claim 10 (depends on 1) The display apparatus of claim 1, further comprising: a backlight assembly which is configured to provide light to the display panel, wherein the illumination part emits the illumination light using the light emitted by the backlight assembly, and the illumination signal corresponds to an intensity of the light emitted by the backlight assembly. ### Claim 11 (depends on 10) The display apparatus of claim 10, further comprising: a light guide part which is configured to guide the light emitted by the backlight assembly to the illumination part, wherein the illumination part comprises an optical film which is configured to convert the light emitted by the backlight assembly into the illumination light. ### Claim 12 (depends on 1) The display apparatus of claim 1, further comprising: a bezel which covers outer edges of the display panel, wherein the bezel comprises a transparent material. ### Claim 13 A method of displaying an image using a display apparatus, the method comprising: emitting illumination light having a first color from a second surface of the display apparatus to an external background, wherein the second surface is opposite to a first surface of the display apparatus on which the image is displayed; outputting an illumination signal corresponding to an intensity of the illumination light; and compensating luminance of an input image data based on the illumination signal. ### Claim 14 (depends on 13) The method of claim 13, wherein the input image data comprises red image data, green image data and blue image data, and the compensating the luminance of the input image data comprises decreasing luminance of the blue image data based on the illumination signal. ### Claim 15 (depends on 14) The method of claim 14, wherein the intensity of the illumination light in a wavelength range of about 500 nanometers to about 800 nanometers is greater than the intensity of the illumination light in a wavelength range of about 380 nanometers to about 500 nanometers, and the intensity of the illumination light at a wavelength in the wavelength range of about 500 nanometers to about 800 nanometers increases, as the wavelength increases. ### Claim 16 (depends on 14) The method of claim 14, wherein the compensating the luminance of the input image data comprises: decreasing luminance of the green image data based on the illumination signal, and increasing luminance of the red image data based on the illumination signal. ### Claim 17 (depends on 13) The method of claim 13, wherein the emitting the illumination light having the first color comprises using an illumination part, wherein the illumination part comprises a light source configured to generate the illumination light. ### Claim 18 (depends on 13) The method of claim 13, wherein the emitting the illumination light having the first color comprises using an illumination part, which emits the illumination light using light emitted by a backlight assembly of the display apparatus, wherein the backlight assembly is configured to provide the light to a display panel.