# US 9,520,096 B2 · Liquid crystal display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,520,096 B2 - Document ID: US9520096B2 - Status: Granted - Kind: B2 - Application number: 13/026,596 - Filed: 2011-02-14 - Published: 2011-09-29 - Granted: 2016-12-13 - Earliest claimed: 2010-03-24 - Assignees: Sony Corporation - Applicants: Mitsuyasu Asano; Tomohiro Nishi - Inventors: Mitsuyasu Asano; Tomohiro Nishi - Web page: https://patentgrep.com/patent/US9520096B2 ## CPC - G09G 3/3648: {using an active matrix (G09G3/367 - G09G3/3696 take precedence)} - G09G 3/3426: {the different display panel areas being distributed in two dimensions, e.g. matrix} - G09G 3/3655: {Details of drivers for counter electrodes, e.g. common electrodes for pixel capacitors or supplementary storage capacitors} - G09G 2320/0646: Modulation of illumination source brightness and image signal correlated to each other - G09G 2320/0686: with two or more screen areas displaying information with different brightness or colours - G09G 2360/16: Calculation or use of calculated indices related to luminance levels in display data - 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 device includes: a light source section so configured that independently-controllable emission subsections are formed on a light-exit plane of a light-guide plate; a liquid crystal display panel modulating, based on an input picture signal, light exited from each of the emission subsections in the light source section; and a display controlling section having a partitioning-drive processing section generating, based on the input picture signal, an emission pattern signal representing a light emission pattern of the emission subsections in the light source section, and a partitioning-drive picture signal. The display controlling section performs, based on the partitioning-drive picture signal, display-drive on each pixel in the liquid crystal display panel, and performs, based on the emission pattern signal, light-emission drive through allowing one or more of first light sources and one or more of second light sources to emit concurrently so as to form the emission subsections. ## Claims ### Claim 1 A liquid crystal display device, comprising: a light source section including a light-guide plate having a light-exit plane partitioned into a plurality of emission subsections, a first pair of opposing edges perpendicular to the light-exit plane, and a second pair of opposing edges perpendicular to the light-exit plane, the first and second pairs of opposing edges defining an outer dimension of the light-guide plate, a plurality of first light sources disposed only along and adjacent to the first pair of opposing edges of the light-guide plate from a light-exit view, and a plurality of second light sources including more than one light source disposed only along and adjacent to the second pair of opposing edges of the light-guide plate from the light-exit view; a liquid crystal display panel including a plurality of pixels, and configured to modulate, based on an input picture signal, light exiting from each of the emission subsections in the light source section to perform picture-displaying; and a display controlling circuit configured to generate an emission pattern signal and a partitioning-drive picture signal based on the input picture signal, the emission pattern signal representing a light emission pattern of the emission subsections in the light source section, perform, based on the emission pattern signal, light-emission drive on the light sources in the light source section, and perform, based on the partitioning-drive picture signal, display-drive on the pixels in the liquid crystal display panel, wherein the display controlling circuit performs the light-emission drive by causing one or more of the first light sources and one or more of the second light sources to emit light concurrently to form at least one emission subsection at an intersection of light from the one or more first light sources and light from the one or more second light sources. ### Claim 2 (depends on 1) The liquid crystal display device according to claim 1, wherein the display controlling circuit is further configured to: generate, based on the input picture signal, a first resolution-lowering signal so that only the plurality of first light sources are used to form a plurality of first virtual emission subsections which are arrayed along an aligning direction of the first light sources, generate, based on the input picture signal, a second resolution-lowering signal so that only the plurality of second light sources are used to form a plurality of second virtual emission subsections which are arrayed along an aligning direction of the section light sources, and generate, based on both the first and the second resolution-lowering signals, the emission pattern signal and the partitioning-drive picture signal. ### Claim 3 (depends on 2) The liquid crystal display device according to claim 2, wherein the first light sources include more than one light source disposed adjacent to a second edge of the first pair of opposing edges, and the second light sources include more than one light source disposed adjacent to a second edge of the second pair of opposing edges, the display controlling circuit performs the light-emission drive by allowing a pair of the first opposing light sources disposed adjacent to both of the first pair of opposing edges to emit concurrently, and allowing a pair of the second opposing light sources disposed on both of the second pair of opposing edges to emit concurrently, and the display controlling circuit generates the first resolution-lowering signal based on both of a pair of the first virtual emission subsections formed between the first pair of opposing edges, and generates the second resolution-lowering signal based on both of a pair of the second virtual emission subsections formed between the second pair of opposing edges. ### Claim 4 (depends on 1) The liquid crystal display device according to claim 1, wherein the first light sources include more than one light source disposed adjacent to a second edge of the first pair of opposing edges, and the second light sources include more than one light source disposed adjacent to a second edge of the second pair of opposing edges, and the display controlling circuit performs the light-emission drive by allowing a pair of the first opposing light sources disposed adjacent to both of the first pair of opposing edges to emit concurrently, and allowing a pair of the second opposing light sources disposed adjacent to both of the second pair of opposing edges to emit concurrently. ### Claim 5 (depends on 1) The liquid crystal display device according to claim 1, wherein each of the first and the second light sources comprises a light-emitting diode. ### Claim 6 (depends on 1) The liquid crystal display device according to claim 1, wherein the plurality of first light sources and the plurality of second light sources are outside of the light exit plane of the light guide plate. ### Claim 7 (depends on 1) The liquid crystal display device according to claim 1, wherein the at least one emission subsection is spaced apart from the first and second opposing edges.