# US 7,745,996 B2 · Display panel film having a black layer and a reflective layer > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,745,996 B2 - Document ID: US7745996B2 - Status: Granted - Kind: B2 - Application number: 11/703,696 - Filed: 2007-02-08 - Published: 2008-01-10 - Granted: 2010-06-29 - Earliest claimed: 2006-07-07 - Assignees: Samsung Electronics Co., Ltd. - Inventors: Sung-hwan Lim; Jeong-ho Nho; Seok-il Yoon; Wook-jae Jeon; Dae-hee Lee - Web page: https://patentgrep.com/patent/US7745996B2 ## CPC - G02B 5/22: Absorbing filters {(G02B5/201 - G02B5/208 take precedence)} - H01J 11/12: with main electrodes provided on both sides of the discharge space - H01J 11/44: Optical arrangements or shielding arrangements, e.g. filters, black matrices, light reflecting means or electromagnetic shielding means - H01J 2211/442: Light reflecting means; Anti-reflection means - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS - H01J: ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS (spark-gaps H01T; electric arc lamps H05B31/00; particle accelerators H05H) ## Abstract A film adhered on a display panel includes a black layer for preventing an external light from entering into the display panel, and a reflective layer for preventing light emitted from the display panel from being absorbed in the black layer. The film minimizes the influence of an external light and improves transmittance, thereby providing a user with a good-quality picture. ## Claims ### Claim 1 A film adhered on a display panel, the film comprising: a light guide for refracting light emitted from the display panel and for emitting the light in a vertical direction with respect to the display panel; a black layer for preventing an external light from entering into the display panel, wherein the black layer is adhered on a lower surface of the light guide; and a reflective layer for preventing light emitted from the display panel from being absorbed in the black layer, wherein the reflective layer is formed on a lower surface of the black layer. ### Claim 2 (depends on 1) The film of claim 1, wherein the light guide comprises: a circular light incident surface to which the light emitted from the display panel is incident; and a hemispheric light exiting surface from which the incident light is exited. ### Claim 3 (depends on 1) The film of claim 1, wherein the light guide is formed in a hemispherical shape. ### Claim 4 (depends on 1) The film of claim 1, wherein an interface of the light guide is coated with a reflective material. ### Claim 5 (depends on 4) The film of claim 4, wherein the interface of the light guide is coated with any one of silver and aluminum. ### Claim 6 (depends on 1) The film of claim 1, wherein the light guide has a light incident surface wider a light exiting surface. ### Claim 7 A display panel comprising: a light guide for refracting the light emitted from the display panel and emitting the light in a vertical direction with respect to the display panel; an upper substrate through which light used for an image display passes; a black layer, formed on an upper surface of the upper substrate and disposed below the light guide, for preventing an external light from entering into the display panel; and a reflective layer for preventing light emitted from the display panel from being absorbed in the black layer, wherein the reflective layer is formed on a lower surface of the black layer. ### Claim 8 (depends on 7) The display panel of claim 7, wherein the light guide comprises: a circular light incident surface to which the light emitted from the display panel is incident; and a hemispheric light exiting surface from which the incident light is exited. ### Claim 9 (depends on 7) The display panel of claim 7, wherein the light guide is formed in a hemispherical shape. ### Claim 10 A plasma display panel comprising: a light guide for refracting the light emitted from the plasma display panel and emitting the light in a vertical direction with respect to the plasma display panel; an upper substrate through which light emitted from a discharge cell passes; a black layer, formed on an upper surface of the upper substrate and disposed below the 1ight guide, for preventing an external light from entering into the display panel; and a reflective layer for preventing light emitted from the discharge cell from being absorbed in the black layer, wherein the reflective layer is formed on a lower surface of the black layer. ### Claim 11 A filter for filtering a video output of a display device, comprising: a light guide for refracting the light emitted from the display device and emitting the light in a vertical direction with respect to the display device; a black layer for preventing an external light from entering into the display device, wherein the black layer is disposed below the light guide; a reflective layer for preventing light emitted from the display device from being absorbed in the black layer, wherein the reflective layer is formed on a lower surface of the black layer, and a near-infrared filtering part for filtering near infrared light contained in the light which is transmitted through the display device, wherein the near-infrared filtering part is disposed below the reflective layer. ### Claim 12 (depends on 11) The filter of claim 11, wherein the light guide comprises: a circular light incident surface to which the light emitted from the display panel is incident; and a hemispheric light exiting surface from which the incident light is exited. ### Claim 13 (depends on 11) The filter of claim 11, wherein the light guide is formed in a hemispherical shape. ### Claim 14 (depends on 11) The filter of claim 11, further comprising an electromagnetic interference (EMI) shielding part for shielding an EMI. ### Claim 15 (depends on 14) The filter of claim 14, wherein the EMI shielding part is formed in a mesh shape or as a conductive film. ### Claim 16 (depends on 11) The filter of claim 11, further comprising an anti-reflection part for preventing reflection of an external light. ### Claim 17 (depends on 16) The filter of claim 16, wherein the anti-reflection part is made of an anti-reflective film. ### Claim 18 (depends on 11) The filter of claim 11, further comprising a near-infrared filtering part for filtering near infrared light contained in the light which is transmitted through the display device. ### Claim 19 (depends on 11) The filter of claim 11, further comprising a glass substrate for reinforcing rigidity of the filter. ### Claim 20 (depends on 1) The film of claim 1, wherein a center axis of the black layer and the reflective layer is offset from a center axis of the light guide. ### Claim 21 (depends on 11) The filter of claim 11, wherein a center axis of the black layer and the reflective layer is offset from a center axis of the light guide.