PATENT DOCUMENT

Publication Number: US-8797474-B2
Application Number: US-96146010-A
Country: US
Kind Code: B2

Title: Methods for assembling display structures with alignment features

Abstract:
Displays for electronic devices may be provided with display structures such as liquid crystal display module structures. Backlight structures may provide backlight. A cover glass may be mounted above a liquid crystal display module. When assembling a display, layers of components may be attached to one another using adhesive. Alignment features may be incorporated into the layers of components to ensure that components are laterally and rotationally aligned before being secured to each other. A liquid crystal display module may have a thin-film transistor layer on which alignment marks are formed. Backlight structures may include a light guide plate, a chassis that receives the light guide plate, and a reflector. The chassis may have alignment openings corresponding to the alignment marks on the thin-film transistor layer. The reflector may have portions that overlap the alignment holes or may have portions that are recessed and do not overlap the alignment holes.

Claims:
What is claimed is: 
     
       1. A display comprising:
 display structures that display images; 
 backlight structures that produce backlight that passes through the display structures, wherein the display structures include at least one substrate layer with alignment marks, wherein the backlight structures include corresponding alignment features, wherein the backlight structures includes a light guide plate and a chassis for the light guide plate, and wherein the alignment features are associated with the chassis; and 
 a transparent cover disposed over the display structures, wherein the transparent cover comprises a peripheral masking layer disposed over inactive peripheral regions of the display structures, wherein the alignment features comprises alignment holes in the chassis, and wherein the alignment marks of the substrate layer of the display structures are disposed between portions of the peripheral masking layer and the alignment features associated with the chassis of the backlight structure such that the peripheral masking layer blocks the alignment marks and the alignment features from being visible from above the display. 
 
     
     
       2. The display defined in  claim 1  wherein the display structures comprise a liquid crystal display module, wherein the substrate layer comprises a thin-film transistor layer within the liquid crystal display module, and wherein the alignment marks comprise metal structures on the thin-film transistor layer.

Description:
BACKGROUND 
     This relates generally to displays for electronic devices, and more particularly, to displays with alignment features. 
     Electronic devices often include displays. For example, an electronic device may have a touch screen display that is based on a backlit liquid crystal display module. This type of display typically has numerous layered components. For example, a backlight unit may be used to provide backlight and a liquid crystal display module may contain an array of addressable image pixels that are illuminated by the backlight from the backlight unit. A cover glass or other layer may be used to cover the liquid crystal display module and the backlight unit when mounted within the housing of the device. 
     Arrangements such as these may be used to form displays for a variety of devices. During manufacturing, it may be desirable to ensure that the layers are satisfactorily attached to each other. For example, it may be desirable to attach components such as a backlight unit, liquid crystal display module, and cover glass structures to one another. For proper operation, it is generally desirable for the layers of components in a display to be aligned with one another. If care is not taken, display components will be misaligned and the display will not function properly. 
     It would therefore be desirable to be able to provide improved ways in which to assemble displays for electronic devices. 
     SUMMARY 
     Displays for electronic devices may be provided with display structures such as liquid crystal display structures. A liquid crystal display module for a display may include a color filter layer, a layer of liquid crystal material, and a thin-film transistor layer. 
     A cover glass may be mounted above a liquid crystal display module. Backlight structures may provide backlight that passes through the liquid crystal display module and the cover glass. 
     When assembling a display, layers of components such as a cover glass layer, a liquid crystal display module structures, and backlight layers may be attached to one another using adhesive. Alignment features may be incorporated into the layers of components to ensure that components are laterally and rotationally aligned before the components are secured to each other. 
     A liquid crystal display module may have alignment marks. The alignment marks may be formed on the surface of the thin-film transistor layer in the liquid crystal display module. 
     Backlight structures for a display may include a light guide plate, a chassis that receives the light guide plate, and a reflector. The chassis may have alignment openings corresponding to the alignment marks on the thin-film transistor layer. The reflector may have portions that overlap the alignment holes or may have portions that are recessed and do not overlap the alignment holes. 
     Further features of the invention, its nature and various advantages will be more apparent from the accompanying drawings and the following detailed description of the preferred embodiments. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIGS. 1A ,  1 B, and  1 C are views of illustrative electronic devices that include displays in accordance with an embodiment of the present invention. 
         FIG. 2  is a cross-sectional side view of an illustrative display showing layers of components that may be used within the display in accordance with an embodiment of the present invention. 
         FIG. 3  is a top view of components in a backlight unit for a display in accordance with an embodiment of the present invention. 
         FIG. 4  is a diagram showing how a liquid crystal display module and backlight unit can be assembled to form an assembly that is mounted to a layer such as a polarizer or cover glass when forming a display in accordance with an embodiment of the present invention. 
         FIG. 5  is a diagram showing how display components such as a cover glass layer or cover glass and polarizer layer structures can be combined with a liquid crystal display module to form an assembly that is mounted to a backlight unit in accordance with an embodiment of the present invention. 
         FIG. 6  is a diagram of assembly equipment that may be used in aligning and attaching layers of display components in accordance with an embodiment of the present invention. 
         FIG. 7  is a top view of an illustrative thin-film transistor layer for a display module that has been aligned with and attached to a backlight unit to form an assembly in accordance with an embodiment of the present invention. 
         FIG. 8  is a cross-sectional side view of the components of  FIG. 7  during assembly in accordance with an embodiment of the present invention. 
         FIG. 9  is a cross-sectional side view of an illustrative display module and cover glass assembly that is being aligned with and attached to a backlight unit for a display in accordance with an embodiment of the present invention. 
         FIG. 10  is a top view of an illustrative reflector layer for a backlight unit of the type shown in  FIG. 9  in accordance with an embodiment of the present invention. 
         FIG. 11  is a top view of illustrative backlight unit chassis showing how the chassis may have alignment holes in accordance with an embodiment of the present invention. 
         FIG. 12  is a top view of a ring of adhesive that may be used to attach a backlight unit chassis of the type shown in  FIG. 11  to an assembly that includes a liquid crystal display module in accordance with an embodiment of the present invention. 
     
    
    
     DETAILED DESCRIPTION 
     Electronic devices may include displays. Displays may be used to display visual information such as text and images to users. 
     Illustrative electronic devices that may be provided with displays are shown in  FIGS. 1A ,  1 B, and  1 C.  FIG. 1A  shows how electronic device  10  may have the shape of a handheld device.  FIG. 1B  shows how electronic device  10  may be a laptop computer with an upper housing and a lower housing that are attached with a hinge.  FIG. 1C  shows how electronic device  10  may be a tablet computer. These are merely illustrative examples. Electronic devices such as illustrative electronic device  10  of  FIGS. 1A ,  1 B, and  1 C may be laptop computers, tablet computers, cellular telephones, media players, other handheld and portable electronic devices, smaller devices such as wrist-watch devices, pendant devices, headphone and earpiece devices, other wearable and miniature devices, or other electronic equipment. 
     As shown in  FIG. 1A , device  10  may have a housing such as housing  12 . Housing  12 , which is sometimes referred to as a case, may be formed of materials such as plastic, glass, ceramics, carbon-fiber composites and other composites, metal, other materials, or a combination of these materials. Device  10  may be formed using a unibody construction in which most or all of housing  12  is formed from a single structural element (e.g., a piece of machined metal or a piece of molded plastic) or may be formed from multiple housing structures (e.g., outer housing structures that have been mounted to internal frame elements or other internal housing structures). 
     Device  10  may have one or more displays such as display  14 . Display  14  may, for example, be a liquid crystal display. Display  14  may, if desired, include capacitive touch sensor electrodes for a capacitive touch sensor array or other touch sensor structures (i.e., display  14  may be a touch screen). 
     A cover glass layer may cover the surface of display  14 . The cover glass layer may be formed from clear plastic, glass, or other transparent materials. If desired, the cover glass layer may be omitted and other structures in display  14  such as a polarizer layer or a color filter array layer may serve as the outermost layer of display  14 . The central portion of display  14  (i.e., portion  16  of  FIG. 1A , which lies within the boundary of dashed line rectangle  18  of  FIG. 1A ) may contain active image pixels and is sometimes referred to as the active region of display  14 . The peripheral ring-shaped area that surrounds dashed line  18  (i.e., portion  20  of display  14 ) does not generally include active image pixels and is sometimes referred to as the inactive region of display  14 . 
     Openings in housing  12  may be used to form input-output ports, microphone ports, speaker ports, button openings, media ports, etc. Opening  24  in the cover glass for display  14  may be used to form a speaker port for device  10 . Buttons and other components such as button  22  may protrude through one or more other openings in the cover glass. 
     A cross-sectional side view of an illustrative configuration that may be used for display  14  is shown in  FIG. 2 . As shown in  FIG. 2 , display  14  may include backlight structures such as backlight unit BLU for producing backlight  50 . During operation, backlight  50  travels outwards (vertically upwards in the orientation of  FIG. 2 ) and passes through image pixel structures in liquid crystal display module LCD. In configurations of the type shown in  FIG. 2 , the outermost layer of display  14  is formed by cover glass layer CG. If desired, other layers can be used to form the top layer of display  14  (e.g., a touch panel, cover plastic, etc.). 
     Backlight unit BLU may have a chassis such as chassis  26 . Chassis  26  may be formed from plastic, thixomolded magnesium, die-cast aluminum, machined metals, machined plastics, fiber-composite materials, metal alloys, fiber-based composites such as carbon-fiber composites, combinations of metals, polymers, fiber-composites, and other materials, ceramics, glass, organic materials, or other suitable materials. Chassis  26  may have an interior shape that receives components such as light-emitting diodes  28 , light guide plate  30 , and, if desired, reflector  32 . Optical films  34  such as a diffuser layer and other films may be mounted over light guide plate (LGP)  34 . Light guide plate  30  may be formed from a layer of clear material such as a sheet of acrylic, polycarbonate, or other polymer. Reflector  32  may be formed from a reflective substance such as white polyester. 
     Light-emitting diodes  28  may be attached to a flexible printed circuit substrate (“flex circuit”) such as a layer of polyimide. When mounted in chassis  26 , light from light-emitting diodes  28  may be emitted in direction  52  and may be guided within light guide plate  34  by total internal reflection. Some of this light may escape upwards and may serve as backlight  50  for display  14 . Reflector  32  may reflect any light that escapes plate  34  in the downwards direction up through display module LCD to add to the strength of backlight  50 . 
     Liquid crystal display module LCD may have upper and lower polarizers such as upper polarizer  44  and lower polarizer  36 . Thin-film transistor layer  38  may include an array of thin-film transistors and associated pixel electrodes formed on a transparent substrate such as a clear glass layer. A driver integrated circuit may be mounted on thin-film transistor layer  38  to drive control signals into the circuitry on the thin-film transistor layer  38 . When a signal is applied to the electrode structures of a given pixel, an electric field is created in an associated portion of liquid crystal layer  40  that changes the polarization of that portion of layer  40 . The polarization change that is produced (in combination with the polarization effects of upper and lower polarizer layers  44  and  36 ) produce changes in light intensity for the pixel. Color filter array layer  42  may contain an array of colored filter elements on a transparent substrate such as a glass substrate. Layer  42  may be used to impart color to the pixels. By controlling the states of each of the pixels in liquid crystal display module LCD, images may be displayed on display  14 . 
     Cover glass layers CG may include a layer of cover glass such as a layer of glass, touch sensor layers (e.g., transparent indium tin oxide capacitor electrodes our other touch sensor electrodes formed on a cover glass substrate or a separate transparent substrate), and other display layers. 
       FIG. 3  is a top view of parts of an illustrative configuration that may be used for forming backlight unit BLU of  FIG. 2 . As shown in  FIG. 3 , backlight unit BLU may include a chassis such as chassis  26 . A rectangular recess in chassis  26  may be used to receive rectangular light guide plate  30 . Light emitting diodes  28  may be mounted within notches  54  in chassis  26 . Light emitting diodes  28  may emit light in direction  52  that travels within light guide plate  30  before being scattered upwards (out of the page in the orientation of  FIG. 3 ) through liquid crystal display module LCD to serve as backlight  50  for display  14 . 
     The layers of components that make up display  14  may be assembled in any suitable order. With one suitable arrangement, which is shown in  FIG. 4  as an example, liquid crystal display module LCD and backlight unit BLU are combined to form assembly  58 , as indicated by dashed lines  56 . For example, liquid adhesive, pressure sensitive adhesive, other adhesive materials, or other attachment mechanisms may be used in attaching liquid crystal display module LCD and backlight unit BLU to form assembly  58 . Once assembly  58  has been formed, the remaining portions of display  14  (e.g., display structures  62  such as cover glass layer  46  or a touch panel layer) may be attached to assembly (e.g., using adhesive or other attachment mechanisms), as indicated schematically by line  60 . 
     Component layer attachment processes such as the process of attaching module LCD and backlight unit BLU (lines  56 ) and in attaching assembly  58  and cover glass CG may be performed using positioning equipment, an autoclave (e.g., to help cure adhesive), ultraviolet (UV) light adhesive curing equipment, or other suitable equipment. 
     Another suitable arrangement for assembling the components that make up display  14  is shown in  FIG. 5 . With the arrangement of  FIG. 5 , cover glass CG and/or other display layers such as a touch panel (display structures  66 ) may be combined with liquid crystal display module LCD to form assembly  68 , as indicated by lines  64 . After forming assembly  68 , assembly  68  may be attached to backlight unit BLU, as indicated by line  70 . As with the structures of  FIG. 4 , the component layers of  FIG. 5  may be attached to one another using positioning equipment, using an optional autoclave (e.g., to help cure adhesive), using ultraviolet (UV) light adhesive curing equipment, or other suitable equipment. 
     Assembly equipment of the type shown in  FIG. 6  may be used in attaching layers of components to one another when forming display  14 . In the example of  FIG. 6 , assembly equipment  72  includes positioning equipment  78  and  80 . Positioning equipment  78  may be used to position component  74 . Positioning equipment  80  may be used to position component  76 . 
     Positioning equipment  78  and  80  may include items such as fixed stages, rotating stages, actuators that control the position of linearly translating stages, or other suitable positioning equipment. Positioning equipment  78  and/or positioning equipment  80  may be controlled by control signals from control unit  86  that are received over control path  82 . Control unit  86  may issue control signals in response to automatically executed control code (e.g., a control program implemented on storage and processing circuitry within control unit  86 ) or may be issue control signals in response to input from a user. The control signals may direct equipment  78  and/or  80  to adjust the position of component  74  and/or  76  with respect to angle (i.e., rotational angle θ around rotational axis  84 ), horizontal dimensions X and Y, and vertical dimension Z. If desired, positioning equipment  78  and  80  may be manually adjusted. 
     Optical equipment  94  and  96  may include cameras, microscopes, illuminating equipment such as lamps, and other visual inspection equipment. Users can interact manually with equipment  94  and  96 . For example, a user may use a microscope or a camera that is connected to a monitor to view the position of components  74  and  76 . Alignment features such as metal alignment marks and alignment holes may be formed on components  74  and  76 . During alignment operations, the position of positioning equipment  78  and  80  (and therefore the position of components  74  and  76 ) may be adjusted by the user. If desired, control unit  86  may make adjustments to the position of equipment  78  and  80  and components  74  and  76  based on digital image data received from digital cameras within equipment  94  and  96 . Digital image data may be received by control unit  86  via path  98  and may be converted into position information using machine vision techniques. Position data may also be obtained by control unit  86  using position sensors (e.g. sensors that measure the locations of components  74  and  76 ). 
     Based on manual input and/or automated processing of sensor and camera data from control unit  86 , control commands (and/or manual input) may be used in controlling positioning equipment  74  and  76  so as to adjust the positions of components  74  and  76  relative to one another. In a typical scenario, the X and Y positions of components  74  and  76  are adjusted to ensure that components  74  and  76  are laterally aligned and the rotational positions of components  74  and  76  are adjusted to ensure that the components  74  and  76  are rotationally aligned. Following lateral and rotational alignment, the Z (vertical) position of components  74  and  76  can be reduced until components  74  and  76  come into contact with each other. Pressure sensitive adhesive, liquid adhesive, UV-cured adhesive, other adhesive, or other attachment mechanisms may be used in attaching components  74  and  76  to each other. 
     In making adjustments to X, Y, Z, and θ, the position of component  74  may be controlled using positioning equipment  78 , the position of component  76  may be controlled using positioning equipment  80 , or the positions of both components  74  and  76  may be adjusted by using both equipment  78  and equipment  80 . Components  74  and  76  may each include one or more structures associated with components such as liquid crystal display module LCD, backlight unit BLU, cover glass CG, and assemblies that include structures from one or more of these components. For example, component  74  may include the structures of component  62  of  FIG. 4  and component  76  may include the structures of assembly  58  of  FIG. 4  or component  74  may include the structures of assembly  68  of  FIG. 5  and component  76  may include the structures of backlight unit BLU of  FIG. 5  (as examples). If desired, other components may be aligned and attached to each other by compressing these components towards one another along vertical dimension Z using equipment  72 . The attachment of the sets of components shown in  FIGS. 4 and 5  to form display  14  is merely illustrative. 
     Alignment features may be used to facilitate alignment of the structures of liquid crystal display module LCD and backlight unit BLU during assembly with equipment  72 . For example, one or more alignment marks may be provided on a layer within the liquid crystal display module such as thin-film transistor layer  38 . The alignment mark or marks may, as an example be formed from patterned metal (e.g., metal in the shape of a cross, a dot, lines, circles, shapes with curved and straight sides, squares, shapes with perpendicular straight sides and no curved sides, etc.). 
     The alignment marks on thin-film transistor layer  38  (or other appropriate layer within module LCD) may each be aligned with a corresponding alignment feature in one or more of the layers of backlight unit BLU. For example, chassis  26  or one or more other layers in backlight unit BLU may have one or more alignment openings such as one or more alignment holes. Each alignment hole may have a circular shape, a square shape, a shape with straight sides, a shape with curved sides, or a shape with a combination of straight and curved sides, or other suitable alignment opening shape. 
     During assembly of display  14  using equipment  72 , the alignment marks on thin-film transistor layer  38  may be aligned with the alignment holes of chassis  26 . Once aligned, equipment  72  may be used to press layers of components that include layer  38  and chassis  26  together, so that adhesive (e.g., pressure sensitive adhesive or other adhesive) forms a bond between the layers of components. For example, module LCD and backlight unit BLU may be mounted to each other. Following this assembly process (e.g., to form assembly  58 ), components  62  (e.g., a cover glass layer or upper polarizer layer) may be attached, as indicated by line  60  of  FIG. 4  (as an example). 
     A top view of a portion of an illustrative assembly (e.g., assembly  58  of  FIG. 4 ) that includes a liquid crystal display module in alignment with a backlight unit is shown in  FIG. 7 . In the example of  FIG. 7 , assembly  58  includes a liquid crystal display module (LCD) having thin-film transistor layer  38 . A display driver integrated circuit such as integrated circuit  100  may be mounted on thin-film transistor layer  38 . Alignment marks  104  such as metal crosses or other suitable alignment mark structures may be formed on the surface of thin-film transistor layer  38 . The chassis of backlight unit BLU (i.e., chassis  26  of  FIG. 2 ) may have alignment openings  102  corresponding to alignment marks  104 . During alignment operations, a user may use a camera or other optical equipment such as equipment  94  to center alignment marks  104  within alignment openings  102  and thereby align the structures of liquid crystal display module LCD such as layer  38  to the structures of backlight unit BLU such as chassis  26 . 
     A cross-sectional side view of the structures of  FIG. 7  taken along line  106 - 106  and viewed in direction  108  is shown in  FIG. 8 . As shown in  FIG. 8 , during the process of forming assembly  58 , liquid crystal display module structures such as layer  38  may be laterally and rotationally aligned to backlight unit structures such as chassis  26  and reflector  32 . Alignment may be achieved by adjusting the relative rotational and lateral position of layers such as layer  38  in module LCD to layers such as layers  26  and  32  in backlight unit BLU using equipment  72  of  FIG. 6  while observing the relative position of alignment marks  104  and corresponding alignment openings  102 . Once marks  104  and openings  102  are properly aligned, backlight unit BLU and liquid crystal display module LCD may be attached to one another using pressure sensitive adhesive  110 . 
     In the illustrative arrangement of  FIG. 8 , liquid crystal display module LCD was aligned to backlight unit BLU using a camera or other visual inspection apparatus  94  that was located above assembly  58 , because reflector layer  32  blocked alignment holes  102  from view from the bottom of assembly  58 . In some assembly scenarios, it may be desirable to view alignment features from below the display. For example, it may be desirable to view alignment features from below the display in scenarios in which cover glass CG is attached to liquid crystal display module LCD to form assembly  68  ( FIG. 5 ) before aligning and attaching back light unit BLU. Assembly arrangements of the type shown in  FIG. 5  may be advantageous, because they avoid the need for backlight unit BLU to withstand the rigors of the process steps involved in attaching assembly  58  to structures  62  of  FIG. 4  (e.g., process steps such as lamination steps that may involve use of a vacuum, autoclave, etc.). 
     In arrangements of the types shown in  FIG. 5 , however, the cover glass in assembly  68  may have a peripheral masking layer (e.g., a ring of black ink in inactive region  20 ). The layer of black ink may block alignment features such as alignment marks  102  and alignment holes  104  of  FIG. 7  from view from above the display. To perform alignment operations, the alignment marks  102  and alignment holes  104  can be viewed from below. 
     An illustrative alignment arrangement in which the alignment features are viewed from below the display is shown in  FIG. 9 . As shown in  FIG. 9 , display  14  may be assembled from components such as backlight unit BLU, liquid crystal display module LCD, and cover glass CG using an optical inspection apparatus such as a camera, microscope, or other optical inspection equipment  96  that is located below display  14 . During alignment operations, equipment  72  may be used to position assembly  68  (e.g., an assembly of the type shown in  FIG. 5  that includes cover glass layer CG and liquid crystal display module LCD) relative to the structures of backlight unit BLU. A layer of adhesive such as adhesive  112  (e.g., liquid adhesive that is cured thermally or by application of ultraviolet light or other suitable adhesive), may be used in attaching cover glass  46  to upper polarizer  44  and the other structures of liquid crystal display module LCD to form assembly  68 . 
     A layer of black ink or other opaque masking material  114  may be used to hide internal display components from view. Layer  114  may be formed in a peripheral ring around the interior surface of cover glass  46  in inactive region  20 . Active region  16  of display  14  may be unobstructed by layer  114 . 
     Alignment marks  104  (e.g., metal cross-shaped marks or other marks) may be formed on one or more layers of the structures of liquid crystal display module LCD. For example, alignment marks  104  may be formed on the upper surface of thin-film transistor layer  38 . The substrate material of thin-film transistor layer  38  may be transparent to allow light from backlight unit BLU to pass through module LCD. For example, the thin-film transistor layer  38  may be formed from a clear glass substrate or other clear material (e.g., polymer). Because thin-film transistor layer  38  is transparent, the positions of alignment marks  104  can be viewed from beneath thin-film transistor layer  38 . Chassis  26  in backlight unit BLU may have alignment openings  102  such as circular alignment holes that correspond to alignment marks  104 . Reflector  32  may be recessed, provided with holes, or otherwise configured so as not to overlap with openings  102  (while continuing to overlap active region  16 ). This allows alignment marks  104  and openings  102  to be viewed from beneath display  14  (e.g., using optical inspection equipment  96  such as a microscope and/or camera, as described in connection with  FIG. 6 ). 
       FIG. 10  is a top view of reflector  32  of  FIG. 9 , showing how reflector  32  may have recessed portions (openings)  116  that uncover (i.e., that do not overlap and thus expose) openings  102  and that therefore allow alignment openings  102  in chassis  26  and alignment marks  104  on thin-film transistor layer  38  to be viewed from below (as shown in  FIG. 9 ). 
       FIG. 11  is a top view of portions of an illustrative backlight unit such as backlight unit BLU of  FIG. 9 . As shown in  FIG. 11 , light guide plate  30  may be mounted within a rectangular opening in chassis  26 . Notches  54  in chassis  26  may receive light-emitting diodes  28 . Alignment openings  102  (e.g., circular holes or other suitable openings) may be formed in the corners of chassis  26  at locations that overlap recesses  116  or other openings in reflector  32  ( FIG. 10 ). 
       FIG. 12  is a top view of a ring of adhesive such as adhesive ring  110  of  FIG. 9 . Adhesive  110  may have a shape that surrounds active area  16  of display  14  without blocking display  14  (e.g., adhesive  110  may lie under inactive region  20  of display  14  and may have a central opening that is substantially aligned with active area  16 ). Adhesive  110  may be formed from a pressure sensitive adhesive material or other material that can be used to attach backlight unit BLU to assembly  68  once alignment between backlight unit BLU and assembly  68  has been achieved. The ring shape of adhesive  110  may have recessed portions that are shaped to follow the contours of openings  116  (i.e., by matching the shape of the recesses at the corners of adhesive  110  to the shape of recesses  116  in reflector  32 ). 
     Once thin-film transistor layer  38  of  FIG. 9  is in alignment with chassis  26  (i.e., in a configuration in which alignment marks  104  on thin-film transistor layer  38  have been aligned with alignment openings  102  in chassis  26 ), thin-film transistor layer  38  and chassis  26  will appear as shown in  FIG. 7 . 
     The foregoing is merely illustrative of the principles of this invention and various modifications can be made by those skilled in the art without departing from the scope and spirit of the invention.

Metadata:
Filing Date: 20101206
Publication Date: 20140805
Grant Date: 20140805
Priority Date: 20101206
Inventors: WURZEL JOSHUA G.
Assignee: APPLE INC
CPC Classifications: [{"code": "G02F1/133325", "inventive": false, "first": false, "tree": "[]"}, {"code": "G02F1/133322", "inventive": false, "first": false, "tree": "[]"}, {"code": "G02F1/133325", "inventive": false, "first": false, "tree": "[]"}, {"code": "G02F1/1333", "inventive": true, "first": true, "tree": "[]"}, {"code": "G02F1/1333", "inventive": true, "first": true, "tree": "[]"}, {"code": "G02F1/133322", "inventive": false, "first": false, "tree": "[]"}]
Family ID: 46161925