DISPLAY AND ELECTRONIC UNIT
BACKGROUND
[0001] The present technology relates to a display in which dampproof
characteristics are improved by providing a sealing section around a display layer and
an electronic unit including the display.
[0002] Currently, a liquid crystal display is widely used as a plane display such as a
television. In addition, a display in which its thickness and power consumption are
allowed to be further decreased has attracted attention.
[0003] In such a display, a dampproof function with respect to a display layer is
important for the following reason. First, most display layers are easily deteriorated
due to moisture . Next, compared to in an organic EL (electroluminescence ) display or
the like, in the display having a large thickness of the display layer (thickness in its
lamination direction), if a dampproof action of the organic EL display or the like is
applied thereto as it is, moisture intrusion from a side surface of the display layer is not
sufficiently prevented. Therefore, the display layer on a substrate is covered with a
dampprobf film with low moisture permeability (for example , moisture permeability
equal to or less than 0 .03 g/m2/day), a sealing section is formed between the substrate
and the dampproof film, and the side surface of the display layer is also covered with
the sealing section (for reference, see Japanese Unexamined Patent Application
Publication No. 2005-114820).
SUMMARY
i
SP321890
[0004] In the foregoing case, however, a pre-hardened resin as a raw material of the
sealing section is filled in a gap between the substrate and the dampproof film.
Therefore, it is necessary to lower viscosity of the pre-hardened resin. Thereby, the
pre-hardened resin is easily spread on the substrate, and there is a possibility that the
sealing section affects a wiring section provided on the outer circumference of the
substrate. Further, due to the spread pre-hardened resin, a frame area is increased.
[0005] In Japanese Unexamined Patent Application Publication No. 2007-073397,
to prevent a pre-hardened resin from being spread on a substrate, the following method
is proposed. In the method, an enclosure is formed around a display region by using a
resin material different from that of a sealing section, and the sealing section is provided
inside the enclosure. In the method, however, the resin material and increased working
step time for forming the enclosure are necessitated. In addition, compatibility
between respective resin materials forming the enclosure and the sealing section should
be considered. Therefore, usable resin materials are limited.
[0006] It is desirable to provide a display in which a sealing section is prevented
from being spread and the sealing section is allowed to be provided in a desired region
and an electronic unit including the display.
[0007] According to an embodiment of the present technology, there is provided a
display including: a substrate including a sealing region and a step section, the sealing
region surrounding a display region, and the step section surrounding the sealing region
from outside; a display layer provided in the display region; and a sealing section
provided in the sealing region.
[0008] According to an embodiment of the present technology, there is provided an
2
SP321890
electronic unit including a display. The display includes: a substrate including a
sealing region and a step section, the sealing region surrounding a display region, and
the step section surrounding the sealing region from outside; a display layer provided in
the display region; and a sealing section provided in the sealing region.
[0009] In the display according to the embodiment of the present technology or the
electronic unit according to the embodiment of the present technology, the step section
is provided in the substrate. Therefore, there is no possibility that the sealing section is
spread outside of the step section, and the sealing section is provided in a desired
region.
[0010] According to the display according to the embodiment of the present
technology and the electronic unit according to the embodiment of the present
technology, the step section is provided in the substrate. Therefore, the sealing region
is allowed to be provided in a desired region. Accordingly, a region other than the
sealing region, for example, a wiring section provided on the outer circumference of the
substrate is allowed to be prevented from being affected by the sealing section, and the
frame area of the display is allowed to be narrowed.
[0011] It is to be understood that both the foregoing general description and the
following detailed description are exemplary, and are intended to provide further
explanation of the technology as claimed.
BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The accompanying drawings are included to provide a further understanding
of the disclosure, and are incorporated in and constitute a part of this specification.
3
SP321890
The drawings illustrate embodiments and, together with the specification, serve to
explain the principles of the technology.
[0013] FIG. 1 is a cross-sectional side view illustrating a configuration of a display
according to an embodiment of the present disclosure.
[0014] FIG. 2 is a plan view illustrating a configuration of the display illustrated in
FIG 1.
[0015] FIG 3 is a cross-sectional side view illustrating one step of a method of
manufacturing the display illustrated in FIG. 1.
[0016] FIG. 4 is a diagram illustrating a relation between wavelength and
transmittance in a film having an ultraviolet-screening function.
[0017] FIG. 5 is a cross-sectional side view illustrating a configuration of a
modification of the display illustrated in FIG. 1,
[0018] FIGs. 6A and 6B are perspective views illustrating appearances of a first
application example.
[0019] FIG 7 is a perspective view illustrating an appearance of a second
application example.
[0020] FIG 8A is a perspective view illustrating an appearance of a third
application example viewed from a front side thereof, and FIG. 8B is a perspective view
illustrating an appearance of the third application example viewed from a rear side
thereof.
[0021 ] FIG. 9 is a perspective view illustrating an appearance of a fourth
application example.
[0022] FIG. 10 is a perspective view illustrating an appearance of a fifth application
example.
4
SP321890
[0023] FIG. 11 A is an elevation view of a sixth application example unclosed, FIG.
11B is a side view thereof, FIG. 11C is an elevation view of the sixth application
example closed, FIG. 11D is a left side view thereof, FIG HE is a right side view
thereof, FIG. 1 l F is a top view thereof, and FIG. 11 G is a bottom view thereof.
DETAILED DESCRIPTION
[0024] An embodiment of the present technology will be hereinafter described in
detail with reference to the drawings. The description will be given in the following
order.
1. Embodiment
Display including a substrate having a step section
2. Modification
Display having a plurality of step sections in a substrate
3. Application Examples
[Embodiment]
[0025] FIG. 1 illustrates a cross-sectional configuration of a display (display 1)
according to an embodiment of the present disclosure. The display 1 is, for example,
an electronic paperless display. The display I has a display layer 20, an opposed
substrate 30, a dampproof film 40, and an optical function film 50 on a drive substrate
10 (substrate) in this order. A side surface of a lamination section from the display
layer 20 to the optical function film 50 is covered with a sealing section 60. FIG. 1
schematically illustrates a structure of the display 1, and in some cases, dimensions and
shapes thereof are different from actual dimensions and actual shapes.
5
SP321890
[0026] The drive substrate 10 has a base substance 11, a barrier layer 12, a TFT
layer 13, and a planarizing layer 14 in this order. The display layer 20 is provided on
the planarizing layer 14. As illustrate in FIG. 2, the drive substrate 10 has a display
region 10-1 in the central section, a sealing region 10-2 that is adjacent to the display
region 10-1 and surrounds the display region 10-1, and a step section 10-3 located
outside of the sealing region 10-2 (on the side opposite to the display region 10-1 with
respect to the sealing region 10-2). The display layer 20 and the opposed substrate 30
are provided in the display region 10-1, and the sealing section 60 is provided in the
sealing region 10-2. A wiring section (not illustrated) for supplying a signal from
outside is provided on the outer circumference of the drive substrate 10.
[0027] The base substance 11 is made of, for example, an inorganic material such
as glass, quartz , silicon, and gallium arsenic; or a plastic material such as polyimide,
polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polymethyl
methacrylate (PMMA), polycarbonate (PC), polyether. sulfone (PES), polyethyl ether
ketone (PEEK), and aromatic polyester (liquid crystal polymer). The base substance
11 may be a wafer having rigidity, or may be thin layer glass and a film having
flexibility. As long as the base substance 11 has flexibility, a display capable of being
bent is allowed to be realized.
[0028] The barrier layer 12 is an AlOxN1_x (where x is from 0.01 to 0.2 both
inclusive) film or a silicon nitride (Si3N4) film formed by, for example, a CVD
(chemical vapor deposition) method. The barrier layer 12 prevents deterioration of the
TFT layer 13 and the display layer 20 due to moisture or organic gas.
[0029] The TFT layer 13 has a switching function for selecting a pixel. The TFT
layer 13 may be formed of an inorganic TFT using an inorganic semiconductor layer as
6
SP321890
a channel layer, or may be formed of an organic TFT using an organic semiconductor
layer.
[0030] Out of the drive substrate 10, the planarizing layer 14 arranged on a surface
opposed to the display layer 20, that is, on the TFT layer 13 is intended to modify a step
created by wiring of the TFT layer 13 or the like. The planarizing layer 14 is made of,
for example, acryl, polyimide, or the like. The step section 10-3 is provided in the
planarizing layer 14.
[0031 ] The step section 10-3 is intended to desirably define a region of the sealing
region 10-2, and is provided in a location surrounding the sealing region 10-2. As
illustrated in FIG 2, in this embodiment, the step section 10-3 continuously surrounds
the sealing region 10-2. However, as long as the region of the sealing region 10-2 is
allowed to be defined, part of the step section 10-3 may be segmentalized. In forming
the sealing section 60 , a pre-hardened resin as a raw material of the sealing section 60 is
allowed to be prevented from being spread outside beyond a desired region by the step
section 10- 3. The step section 10-3 includes a trench 10A (groove) having a certain
depth from the surface of the drive substrate 10 and a rib lOB (protruded wall) that
protrudes from the surface of the drive substrate 10. It is allowable that the sealing
section 60 (resin) intrudes into inside of the trench 10A, and the sealing region 10-2 and
the step section 10-3 are partly overlapped. For example, a thickness of the
planarizing layer 14 in the sealing region 10 -2 is about 10 μm. The trench 10A and the
rib l OB (step section 10-3) are formed by providing a groove and a protruded wall each
being about 3 μm thick with respect to the sealing region 10-2. As illustrated in FIG 1,
the planarizing layer 14 may be segmentalized by the trench I OA.
[0032] In the step section 10-3, in order to improve water repellency, the
7
SP321890
planarizing layer 14 is subjected to, for example, silica-based surface treatment.
Meanwhile, the sealing region 10-2 is subjected to surface treatment for improving
wettability such as oxygen plasma treatment. Specifically, in the sealing region 10-2,
the resin forming the sealing section 60 blends therewith and is easily spread.
Meanwhile, in the step section 10-3, the resin forming the sealing section 60 is' shed.
Therefore, the sealing section 60 is allowed to be provided in a desired region more
securely.
[0033] The display layer 20 has a display, body between a pixel electrode and a
common electrode. The pixel electrode is contacted with the planarizing layer 14, and
the common electrode is contacted with the opposed substrate 30. A thickness in the
lamination direction of the display layer 20 is, for example, about from 40 μm to 165
pm both inclusive. The pixel electrode is provided for every pixel, and is composed of,
for example, a single element or an alloy of.metal elements such as chromium (Cr), gold
(Au), platinum (Pt), nickel (Ni), copper (Cu), tungsten. (W), aluminum (Al), and silver
(Ag). The common electrode is provided over one surface of the opposed substrate 30,
and is made of, for example, a translucent conductive material (transparent electrode
material) such as indium oxide-tin oxide (ITO), antimony oxide-tin oxide (ATO),
fluorine-doped tin oxide (FTO), and aluminum-doped zinc oxide (AZO).
[0034] In this embodiment, since an image is displayed on the opposed substrate 30
side, an optically-transparent material is used for the opposed substrate 30. Except for
this point, a material similar to that of the substrate 10 may be used.
[0035] The dampproof film 40 is intended to prevent moisture intrusion into the
display layer 20, and exists between the display layer 20 and the optical function film
50 as the uppermost surface. The opposed substrate 30 is adhered to the dampproof
8
SP321890
film 40 by, for example, a pressure sensitive adhesive, a heat sensitive adhesive, or the
like. The dampproof film 40 is made of polyethylene terephthalate,
polymethylmethacrylate, polycarbonate, polyethylene naphthalate, polypropylene,
nylon-6, nylon-66, polyvinylidene chloride, polyether sulfone, or the like. It is
preferable that the dampproof film 40 have dampproof characteristics, for example,
moisture permeability of from 0.1 g/m2/day to 0.000001 g/m2/day both inclusive, and
preferably a value equal to or less than 0.03 g/m2/day, and have high optical
transparency.
[0036] In the display 1, the dampproof film 40 and the optical function film 50 are
larger than the display region 10-1 (the display layer 20 and the opposed substrate 30),
and end surfaces thereof are thrown out to the sealing region 10-2 side (outside).
Thereby, a gap is created between the dampproof film 40 and the drive substrate 10, and
a canopy-like structure is formed.
[0037] The optical function film 50 is intended to prevent, for example, reflection
of outside light on the display surface, and is arranged to be opposed to the display
surface of the display layer 20 with the dampproof film 40 in between. 'Che optical
function film 50 is bonded with the dampproof film 40 by an adhesive (not illustrated).
Specifically, the optical function film 50 has an antireflection function or a glare-proof
function. For example, in the case where the optical function film 50 has the
antireflection function, the optical function film 50 is a laminated body formed of a
plurality of thin films each having a different refractive index, in which reflected light is
attenuated by using interference of reflected light generated on a boundary face between
these thin films. Further, for example, in the case where the optical function film 50
has the glare-proof function, a concavo-convex surface is formed on the surface of the
9
SP321890
optical function film 50 by paint, and outside light is irregularly reflected by the
concavo-convex surface. Instead of the optical function film 50, a film to protect the
display surface from physical impulse (external force) such as a hard coating may be
formed as a surface film.
[0038] The sealing section 60 is provided on the drive substrate 10 to °cover
respective end surfaces of the display layer 20, the opposed substrate 30, the dampproof
film 40, and the optical function film 50. In other words, the sealing section 60 is
provided to surround circumferences of the display layer 20, the opposed substrate 30,
the dampproof film 40, and the optical function film 50. The sealing section 60
preferably seals the end section of the display 1 and prevents moisture intrusion from
the side surface thereof. The sealing section 60 is made of a thermosetting
acrylic-based resin, an ultraviolet-curable acrylic-based resin, a thermosetting
methacrylic-based resin, an ultraviolet-curable methacrylic-based resin, a thermosetting
epoxy resin, an ultraviolet-curable epoxy resin, or the like.
[Method of Manufacturing Display 1]
[0039] The display I is allowed to be manufactured, for example, as follows.
[0040] First, for example, high-frequency sputtering with the use of silicon as a
target is performed while nitrogen gas is introduced, and thereby the barrier layer 12
made of silicon nitride is formed on the base substance 11. Next, the foregoing TFT
layer 13 is formed on the barrier layer 12, and an organic film made of acryl is formed
on the TFT layer 13. The trench 1 OA and the rib l OB (step section 10-3) are provided
in the organic film by, for example, a lithography method or an etching method to form
the planarizing layer 14. Thereby, the drive substrate 10 is formed. The sealing
region 10-2 of the drive substrate 10 (planarizing layer 14) is subjected to oxygen
10
SP321890
plasma treatment, and the step section 10-3 of the drive substrate 10 (planarizing layer
14) is subjected to silica- based surface treatment.
[0041] After the drive substrate 10 is formed, a metal film composed of, for
example, chromium, gold, platinum , nickel, copper, tungsten, or silver is formed on the
whole surface of the drive substrate 10, the formed metal film is patterned, and thereby
the pixel electrode is formed.
[0042] Next, the display body is formed on the opposed substrate 30 including the
common electrode by, for example, coating. After that, the opposed substrate 30 is
bonded with the drive substrate 10. Thereby, the display layer 20 and the opposed
substrate 30 are formed on the drive substrate 10. The common electrode is previously
formed by, for example, forming a film of ITO on the whole surface of one surface of
the opposed substrate 30.
[0043] Subsequently, the dampproof film 40 is fixed onto the opposed substrate 30
by a transparent adhesive. At this time, as the dampproof film 40, a film in which all
sides thereof are larger than a side of the display region 10-1 and its area is larger than
an area of the display region 10-1 is used. Thereby, in the dampproof film 40, a
section thrown out of the display region 10-1 is created , and a canopy-like structure is
formed. -After the dampproof film 40 is fixed onto the opposed substrate 30, the
optical function film 50 is provided on the dampproof film 40. Alternately, the
dampproof film 40 and the optical function film 50 may be previously adhered to the
opposed substrate 30, and the opposed substrate 30 may be opposed to the drive
substrate 10.
[0044] After the optical function film 50 is provided, the sealing section 60 is
formed in the sealing region 10-2. A description will be given in detail of a formation
SP321890
step thereof.
[0045] In forming the sealing section 60, as illustrated in FIG. 3, first, a
thermosetting resin or an ultraviolet-curable resin (pre-hardened resin 61 ) is filled in the
gap between the dampproof film 40 and the drive substrate 10 by, for example, a needle
62. At this time, since the resin is filled in the gap by using capillary phenomenon of
the pre-hardened resin 61, viscosity of the pre-hardened resin 61 should be low. The
viscosity of the pre -hardened resin 61 is, for example, equal to or less than 10 (Pa•s), or
is preferably equal to or less than 2 (Pa•s). The viscosity of the pre-hardened resin 61
is allowed to be adjusted by a resin component. Alternately, the viscosity of the
pre-hardened resin 61 may be decreased by heating a syringe body (not illustrated) or
the needle 62.
[0046] In the case where the viscosity of the pre-hardened resin 61 is low as
described above, if the step section 10-3 is not provided, the pre-hardened resin 61 is
easily spread on the drive substrate 10, and there is a possibility that the sealing section
60 is formed in a wide range beyond a desired region. The wiring section is provided
on the outer circumference of the drive substrate 10. Therefore, if the pre-hardened
resin 61 (sealing section 60) is spread to the wiring section, the wiring section is
deteriorated, and reliability of the display is lowered. Further, in the case where the
sealing section 60 is formed over a wide range, or in the case where a width of the
sealing section 60 (distance from inside to outside of the sealing section 60) varies
according to its position, a frame area of the display is increased , and design thcreof is
limited.
[0047] As in Japanese Unexamined Patent Application Publication No.
2007-073397, there is a possibility to adopt a method in which an enclosure is formed
12
SP321890
on the drive substrate 10 by a resin material different from that of the sealing section 60,
and the pre-hardened resin 61 is filled inside of the enclosure. In such a method,
however, the resin material and increased working step time for forming the enclosure
are necessitated. In addition, compatibility between respective resin materials forming
the enclosure and the sealing section should be considered Therefore, usable resin
materials are limited.
[0048] Meanwhile, in this embodiment, since the step section 10-3 is provided in
the drive substrate 10, the pre-hardened resin 61 (sealing section 60) is inhibited from
being spread outside of the step section 10-3. Further, since the step section 10-3 is
formed by performing lithography, etching, or the like on the planarizing layer 14.
Therefore, the sealing section 60 (sealing region 10-2) is allowed to be provided in a
desired region with the minimum number of types of resin materials to be used.
Therefore, the sealing section 60 is not formed to the wiring section on the outer
circumference of the drive substrate 10, and reliability of the display 1 is allowed to be
improved. Further, since the frame area of the display is narrowed, design
characteristics are improved.
[0049] After the pre-hardened resin 61 is provided in the display region 10-2, the
pre-hardened resin 61 is hardened by, for example, radiating heat or light to form the
sealing section 60. Many of films used for the dampproof film 40 and the optical
function film 50 have an ultraviolet-screening function. In the case where the
dampproof film 40 and the optical function film 50 having the ultraviolet-screening
function are used, the sealing section 60 is formed by using a resin material capable of
being hardened by light in a range out of wavelength of screened ultraviolet. FIG. 4
illustrates an example of a relation between wavelength and light transmittance in the
13
SP321890
dampproof film 40 having the ultraviolet-screening function. In the case where such a
dampproof film 40 is used, a resin material capable of being hardened by radiating light
with wavelength longer than 380 urn (visible light) is used. To retain flexibility of the
display 1, Young's modulus of the sealing section 60 (hardened resin) is preferably equal
to or less than 500 (MPa), and is more preferably equal to or less than 100 (MPa).
Accordingly, the display 1 illustrated in FIG. 1 is completed.
[0050] As described above, in the display I according to this embodiment, since the
step section 10-3 is provided in the drive substrate 10, the sealing section 60 is inhibited
from being spread, and the sealing region 10-2 (sealing section 60) is allowed to be
provided in a desired region. Therefore, the wiring section on the outer circumference
of the drive substrate 10 is prevented from being affected by the sealing section 60, and
the frame area of the display is allowed to be narrowed.
[0051] Further, by performing surface treatment for improving wettability on the
sealing region 10-2 of the drive substrate 10 and performing surface treatment for
improving water repellency on the step section 10 -3 of the drive substrate 10, a range of
the sealing region 10-2 is allowed to be more securely defined.
[Modification]
[0052] - FIG. 5 illustrates a cross-sectional configuration of a display lA according to
a modification. In the display 1A, the step section 10-3 includes a plurality of trenches
lOA and a plurality of ribs 10B. Except for this point, the display IA has a
configuration similar to that of the display 1 according to the foregoing embodiment,
and functions and effects thereof are similar to those of the display 1 according to the
foregoing embodiment.
[0053] In the drive substrate 10 of the display IA, the plurality of trenches 1 OA and
14
SP321890
the plurality of ribs 1 OB are provided. In this case, a case in which two trenches I OA
and two ribs lOB are provided is illustrated as an example. By providing the plurality
of trenches 1 OA and the plurality of ribs 1 OB as described above, the sealing section 60
is inhibited from being spread more securely.
[0054] The foregoing displays 1 and lA are allowed to be mounted on, for example,
electronic units illustrated in a first to a sixth application examples described below.
[First Application Example]
[0055] FIGs. 6A and 6B illustrate appearances of an electronic book. The
electronic book has, for example, a display section 210, a non-display section 220, and
an operation section 230. The operation section 230 may be provided on the same
surface (front surface) as the surface on which the display section 210 is formed as
illustrated in FIG. 6A. Alternatively, the operation section 230 may be provided on a
surface (top surface) different from the surface on which the display section 210 is
formed as illustrated in FIG. 6B.
[Second Application Example]
[0056] FIG. 7 illustrates an appearance of a television. The television has, for
example, an image display screen section 300 including a front panel 310 and a filter
glass 320.
[Third Application Example]
[0057] FIGs. 8A and 8B illustrate appearances of a digital still camera. The digital
still camera has, for example, a light emitting section for a flash 410, a display section
420, a menu switch 430, and a shutter button 440.
[Fourth Application Example]
[0058] FIG. 9 illustrates an appearance of a notebook personal computer. The
15
SP321890
notebook personal computer has, for example, a main body 510, a keyboard 520 for
operation of inputting characters and the like, and a display section 530 for displaying
an image.
[Fifth Application Example]
[0059] FIG. 10 illustrates an appearance of a video camcorder. The video
camcorder includes, for example, a main body 610, a lens 620 for shooting an object
provided on the front side surface of the main body 610, a start/stop switch 630 in
shooting, and a display section 640.
[Sixth Application Example]
[0060] FIGs. 11A to 11G illustrate appearances of a mobile phone. In the mobile
phone, for example, an upper package 710 and a lower package 720 are jointed by a
joint section (hinge section) 730. The mobile phone includes a display 740, a
sub-display 750, a picture light 760, and a camera 770.
[0061] While the present technology has been described with reference to the
embodiment and the modifications, the present technology is not limited to the
foregoing embodiment and the like, and various modifications may be made. For
example, in the foregoing embodiment and the like, the description has been given of
the electronic paper display. However, the present technology is applicable to a liquid
crystal display, an organic EL (electroluminescence) display, or an inorganic EL display.
[0062] Further, in the foregoing embodiment and the like, the description has been
given of the case in which the trench 10A is provided on the inner side (sealing region
t0-2 side) and the rib lOB is provided on the outer side. However, arrangement
thereof may be opposite thereto. Further, the step section 10-3 may include only the
trench 1 OA or only the rib I OB.
16
SP321890
[0063] In addition, the material, the thickness, the film-forming method, the
film-forming conditions, and the like of each layer are not limited to those described in
the foregoing embodiment and the like, and other material, other thickness, other
film-forming method, and other film-forming conditions may be adopted.
[0064] In addition, in the foregoing embodiment and the like, the description has
been specifically given of the configurations of the displays 1 and IA. However, it is
not necessary to provide all layers, and other layer may be further provided.
[0065] It is possible to achieve at least the following configurations from the
above-described exemplary embodiment and the modifications of the disclosure.
(1) A display including:
a substrate including a sealing region and a step section, the sealing region
surrounding a display region, and the step section surrounding the sealing region from
outside;
a display layer provided in the display region; and.
a sealing section provided in the sealing region.
(2) The display according to (1), wherein the step section includes a groove and
a protruded wall, the groove being provided in the substrate, and the protruded wall
being protruded from a surface of the substrate.
(3) The display according to (1) or (2), wherein
the sealing region is subjected to treatment for improving wettability, and
the step section is subjected to water-repellent treatment.
(4) The display according to any one of (1) to (3), wherein the sealing region is
subjected to plasma treatment.
(5) The display according to any one of (1) to (4), wherein the step section is
17
SP321890
subjected to silica-based surface treatment.
(6) The display according to any one of (1) to (5), wherein the step section
includes a plurality of grooves and a plurality of protruded walls, the plurality of
grooves being provided in the substrate, and the plurality of protruded walls being
protruded from a surface of the substrate.
(7) An electronic unit including a display, the display including:
a substrate including a sealing region and a step section, the sealing region
surrounding a display region, and the step section surrounding the sealing region from
outside;
a display layer provided in the display region; and
a sealing section provided in the sealing region.
[0066] The present disclosure contains subject matter related to that disclosed in
Japanese Priority Patent Application JP 2011-166667 filed in the Japanese Patent Office
on July 29, 2011, the entire contents of which is hereby incorporated by reference.
[0067] It should be understood by those skilled in the art that various modifications,
combinations, sub-combinations, and alternations may occur depending on design
requirements and other factors insofar as they are within the scope of the appended
claims or the equivalents thereof.
18
SP321890

What is claimed is:
1. A display comprising:
a substrate including a sealing region and a step section, the sealing region
surrounding a display region, and the step section surrounding the sealing region from
outside;
a display layer provided in the display region; and
a sealing section provided in the sealing region.
2. The display according to claim 1, wherein the step section includes a groove
and a protruded wall, the groove being provided in the substrate, and the protruded wall
being protruded from a surface of the substrate.
3. The display according to claim 1, wherein
the sealing region is subjected to treatment for improving wettability, and
the step section is subjected to water-repellent treatment.
4. The display according to claim 3, wherein the sealing region is subjected to
plasma treatment.
5. The display according to claim 3, wherein the step section is subjected to
silica-based surface treatment.
6. The display according to claim 1, wherein the step section includes a plurality
of grooves and a plurality of protruded walls, the plurality of grooves being provided in
19
SP321890
the substrate, and the plurality of protruded walls being protruded from a surface of the
substrate.
7. An electronic unit including a display, the display comprising:
a substrate including a sealing region and a step section, the sealing region
surrounding a display region, and the step section surrounding the sealing region from
outside;
a display layer provided in the display region; and
a sealing section provided in the sealing region.