# US 9,039,193 B2 · Electro-optic module and electronic apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,039,193 B2 - Document ID: US9039193B2 - Status: Granted - Kind: B2 - Application number: 13/602,729 - Filed: 2012-09-04 - Published: 2013-03-28 - Granted: 2015-05-26 - Earliest claimed: 2011-09-26 - Assignees: Seiko Epson Corporation - Applicants: Tomoaki Miyashita - Inventors: Tomoaki Miyashita - Web page: https://patentgrep.com/patent/US9039193B2 ## CPC - H04N 9/3144: {Cooling systems (cooling of liquid crystal cells in general G02F1/133382; cooling of projectors not peculiar to the presence of an electronic spatial light modulator G03B21/16)} - G02F 1/133308: {Support structures for LCD panels, e.g. frames or bezels} - G02F 1/133385: {with cooling means, e.g. fans} - G02F 1/133512: {Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence)} - G03B 21/006: {using LCD's} - H04N 5/7441: {the modulator being an array of liquid crystal cells} - H04N 9/3105: {for displaying all colours simultaneously, e.g. by using two or more electronic spatial light modulators (simultaneous projection in colour photography G03B33/10; beam splitting or combining systems per se G02B27/10)} - G02F 1/133317: {Intermediate frames, e.g. between backlight housing and front frame} - G03B 21/16: Cooling; Preventing overheating - H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION - 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 - G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D) ## Abstract A first light-transmissive plate is provided on an opposite surface of a first substrate of an electro-optic panel to a second substrate. The first light-transmissive plate is smaller than the first substrate, and an end portion of the first substrate is exposed from the first light-transmissive plate. In addition, a heat radiation member made of a metal material is provided so as to be overlapped with the exposed portion from the first light-transmissive plate of the first substrate. ## Claims ### Claim 1 An electro-optic module comprising: an electro-optic panel that includes a first light-transmissive substrate, a second light-transmissive substrate arranged so as to face the first light-transmissive substrate, and an electro-optic material layer provided between the first light-transmissive substrate and the second light-transmissive substrate; a first light-transmissive plate that overlaps a side of the first light-transmissive substrate opposite to the second light-transmissive substrate in at least an image display region of the electro-optical panel in a state in which a portion of a surface of the side of the first light-transmissive substrate opposite to the second light-transmissive substrate is exposed; and a heat radiation member comprising a frame portion that overlaps the side of the first light-transmissive substrate opposite to the second light-transmissive substrate on at least a part of the exposed portion of the first light-transmissive substrate, and a parting portion that overlaps a surface of a side of the first light-transmissive plate opposite to the first light-transmissive substrate, wherein the heat radiation member is made of a material higher in thermal conductivity than the first light-transmissive plate, the parting portion contacts the surface of the side of the first light-transmissive plate opposite to the first light-transmissive substrate, the frame portion contacts the side of the first light-transmissive substrate opposite to the second light-transmissive substrate, and end portions of the first light-transmissive plate and the heat radiation member which face each other are spaced apart from each other. ### Claim 2 (depends on 1) The electro-optic module according to claim 1, wherein the heat radiation member is made of a metal. ### Claim 3 (depends on 1) The electro-optic module according to claim 1, wherein the first light-transmissive plate has a smaller size than a size of the first light-transmissive substrate, an end portion of the first light-transmissive plate is arranged between an end portion of the first light-transmissive substrate and an end portion of the image display region over the whole periphery of the first light-transmissive plate in plan view, and the heat radiation member is provided so as to surround the whole periphery of the first light-transmissive plate. ### Claim 4 (depends on 1) The electro-optic module according to claim 1, wherein a thickness of the parting portion is smaller than a thickness of a portion that is overlapped with the exposed portion of the first light-transmissive substrate in the heat radiation member. ### Claim 5 (depends on 1) The electro-optic module according to claim 1, wherein on the second light-transmissive substrate side of the first light-transmissive substrate, a frame for supporting the electro-optic panel is provided between the first light-transmissive substrate and the heat radiation member so as not to be overlapped with the image display region. ### Claim 6 (depends on 5) The electro-optic module according to claim 5, further comprising: a second light-transmissive plate that is overlapped on an opposite side of the second light-transmissive substrate to the first light-transmissive substrate in the at least the image display region of the electro-optical panel in a state in which a part of an opposite side surface of the second light-transmissive substrate to the first light-transmissive substrate is exposed, wherein end portions of the second light-transmissive plate and the frame which face each other are spaced apart from each other. ### Claim 7 (depends on 1) The electro-optic module according to claim 1, wherein the first light-transmissive substrate is an element substrate including a pixel electrode and a switching element provided to correspond to the pixel electrode. ### Claim 8 (depends on 1) The electro-optic module according to claim 1, wherein the electro-optic panel is a liquid crystal panel including a liquid crystal layer as the electro-optic material layer. ### Claim 9 (depends on 1) An electronic apparatus that includes the electro-optic module according to claim 1, comprising: a light source unit that emits light supplied to the electro-optic module; and a projection optical system that projects light modulated by the electro-optic module. ### Claim 10 (depends on 5) The electro-optic module according to claim 5, wherein end portions of the first light-transmissive substrate and the frame which face each other are spaced apart from each other.