# US 2013/0155351 A1 · Electronic Device With Backlit Display > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0155351 A1 - Document ID: US20130155351A1 - Status: Published application - Kind: A1 - Application number: 13/332,228 - Filed: 2011-12-20 - Published: 2013-06-20 - Earliest claimed: 2011-12-20 - Assignees: Apple Inc. - Inventors: Adam T. Garelli; Jun Qi; Victor H. Yin; Thomas W. Wilson, JR.; Dinesh C. Mathew; Bryan W. Posner; Keith J. Hendren; Peteris K. Augenbergs - Web page: https://patentgrep.com/patent/US20130155351A1 ## CPC - G02B 6/001: {the light being emitted along at least a portion of the lateral surface of the fibre} - G02B 6/0006: {Coupling light into the fibre (in general G02B6/4298)} - G02B 6/0068: {Arrangements of plural sources, e.g. multi-colour light sources} - G02B 6/0073: {Light emitting diode [LED]} - G02B 6/0088: {of the light guide or other optical sheets in the package} - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract An electronic device may have a liquid crystal display with backlight structures. The backlight structures may produce backlight that passes through display layers in the display. The display layers may include color filter elements, a liquid crystal layer, and a thin-film transistor layer. The color filter elements may be interposed between the thin-film transistor layer and the backlight structures or the thin-film transistor layer may be interposed between the color filter elements and the backlight structures. The backlight structures may be formed from optical fiber, a two-dimensional array of light-emitting diodes, a light guide plate that includes a rectangular recess for receiving optical films, or light guide plate structures that include internal light scattering structures. A light guide plate may be provided with alignment features that mate with alignment features on optical films. ## Claims ### Claim 1 A display, comprising: an outer display layer; an inner display layer; a two-dimensional light-emitting diode array that produces display backlight; and a layer of liquid crystal material between the outer display layer and the inner display layer, wherein the outer display layer comprises a substrate and comprises thin-film transistors, wherein the inner display layer is interposed between the layer of liquid crystal material and the two-dimensional light-emitting diode array. ### Claim 2 (depends on 1) The display defined in claim 1 wherein the inner display layer comprises a color filter array layer. ### Claim 3 (depends on 1) The display defined in claim 1 further comprising a layer of color filter elements on the substrate, wherein the thin-film transistors are interposed between the color filter elements and the substrate. ### Claim 4 (depends on 3) The display defined in claim 3 wherein the inner display layer comprises a polarizer layer. ### Claim 5 (depends on 1) The display defined in claim 1 wherein the two-dimensional array of light-emitting diodes comprises an array of vertically mounted light-emitting diodes mounted on a substrate in rows and columns. ### Claim 6 (depends on 1) The display defined in claim 1 wherein the array of light-emitting diodes comprises a two-dimensional array of organic light-emitting diodes. ### Claim 7 A display, comprising: liquid crystal display layers; and backlight structures that provide backlight for the liquid crystal display layers, wherein the backlight structures include at least one optical fiber. ### Claim 8 (depends on 7) The display defined in claim 7 wherein the optical fiber comprises a textured surface that is configured to promote light leakage. ### Claim 9 (depends on 8) The display defined in claim 8 wherein the backlight structures include a plurality of light-emitting diodes and a plurality of optical fibers including the at least one optical fiber and wherein each of the optical fibers is configured to receive light from a respective one of the light-emitting diodes. ### Claim 10 (depends on 7) The display defined in claim 7 wherein the backlight structures comprise: at least one light-emitting diode; and a light diffusing and guiding structure interposed between the light-emitting diode and the optical fiber. ### Claim 11 (depends on 7) The display defined in claim 7 further comprising: a lower polarizer; an upper polarizer; and an opaque masking layer on a peripheral portion of the lower polarizer. ### Claim 12 A display, comprising: liquid crystal display layers; and backlight structures configured to produce backlight that passes through the liquid crystal display layers, wherein the backlight structures comprise a light source that produces light, a light guide plate that receives the light and that has a recess, and optical films in the recess and wherein at last some of the light produced by the light source passes through the light guide plate and the optical films and serves as the backlight that passes through the liquid crystal display layers. ### Claim 13 (depends on 12) The display defined in claim 12 wherein the optical films include a diffuser film and a brightness enhancing film. ### Claim 14 (depends on 12) The display defined in claim 12 wherein the recess comprises a rectangular recess surrounded by sidewall portions of the light guide plate. ### Claim 15 (depends on 14) The display defined in claim 14 wherein the sidewall portions are attached to a given one of the liquid crystal display layers. ### Claim 16 (depends on 15) The display defined in claim 15 wherein the given one of the liquid crystal display layers comprises a thin-film transistor substrate layer. ### Claim 17 A display, comprising: liquid crystal display layers that include display pixels configured to display images; and a backlight that includes a light guide plate and optical films, wherein the light guide plate and optical films have mating alignment features. ### Claim 18 (depends on 17) The display defined in claim 17 wherein the light guide plate has protrusions that serve as at least some of the alignment features. ### Claim 19 (depends on 18) The display defined in claim 18 wherein the optical films have openings that serve as at least some of the alignment features and that are configured to mate with the protrusions in the light guide plate. ### Claim 20 (depends on 19) The display defined in claim 19 wherein the light guide plate comprises a rectangular recess that receives the optical films. ### Claim 21 Display backlight structures, comprising: a light source that produces light; and a light guide plate that receives the light and emits at least some of the received light as display backlight for a display, wherein the light guide plate includes at least some internal structures. ### Claim 22 (depends on 21) The display backlight structures defined in claim 21 wherein the internal structures comprise bubbles. ### Claim 23 (depends on 21) The display backlight structures defined in claim 21 wherein the light guide plate comprises at least two layers with different respective types of the internal structures. ### Claim 24 (depends on 21) The display backlight structures defined in claim 21 wherein the internal structures are configured so that the light guide plate is characterized by a gradient of internal structures in which the internal structures vary in type as a function of distance through the light guide plate.