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SEMI D25-0600 E © SEMI 2000, 2003 2 • Tak ing into consideration the h ead cl earance when l oading an d unloa ding by forkl ift, as well as the height of the shipping case, th e maximum height of the load is approximate…

SEMI D25-0600

SPECIFICATION FOR FLAT PANEL DISPLAY SUBSTRATE SHIPPING

CASE

This specification was technically approved by the Global Flat Panel Display Committee and is the direct

responsibility of the Japanese Flat Panel Display Committee. Current edition approved by the Japanese

Regional Standards Committee on April 21, 2000. Initially available on SEMI OnLine May 2000; to be

published June 2000.

This document was editorially modified in October 2003 to correct general editorial errors. Changes were

made to Sections 3.2.2, 6.2.8.1, 6.2.9.1, and A3-1 (figure).

1 Purpose

1.1 This document provides the packing and shipping

specifications and/or guides for FPD glass substrates,

which are called fourth generation substrates (800 ×

950 × 0.7 mm or 800 × 950 × 1.1 mm).

1.2 The objective of this document is to provide cost-

effective packing and shipping in terms of packing

materials, storage, and shipping, while making sure that

packing meets the quality and automation requirements.

2 Scope

2.1 This document defines a specification for a full box

type shipping case (see Figure 2) to be used for packing

and shipping of 4

generation FPD glass substrates

from the manufacturer of the glass substrate to the user.

2.2 The application of this packing specification is

limited to the following four FPD glass substrates:

2.2.1 Bare glass substrates which can be used as array

substrates, and do not have film deposition.

2.2.2 Bare glass substrates which can be used as facing

substrates and color filter substrates, and do not have

film deposition.

2.2.3 Array substrates which do have film deposition.

2.2.4 Facing substrates and color filter substrates which

do have film deposition.

2.3 This standard does not purport to address safety

issues, if any, associated with its use. It is the

responsibility of the users of this standard to establish

appropriate safety and health practices and determine

the applicability of regulatory limitations prior to use.

3 Prerequisites and Limitations

3.1 This specification does not apply to:

3.1.1 cassettes used for intra/inter bay transfer inside

the user’s plant;

3.1.2 the semi-separating type the contact type packi-

ng method (see Figure 4) or the full corner supporter

type and the double side supporter type (see Figure 3)

3.2 The premise for glass substrates for this packing

specification is as follows.

3.2.1 Size

W (mm): Short Edge

L (mm): Long Edge

t (mm): Thickness

W = 800 mm W tolerance: see SEMI D24

L = 950 mm L tolerance: see SEMI D24

t = 1.1 t tolerance = see SEMI D24

t = 0.7 t tolerance = see SEMI D24

3.2.2 Squareness — see SEMI D24

3.2.3 Beveling — R beveling

3.2.4 Orientation Corner — see SEMI D24

3.2.5 Corner Cut — see SEMI D24

3.2.6 Edge Exclusion Area — see SEMI D24

3.2.7 Sag — In the event of the glass substrate being

placed horizontally on the support as shown in Figure 1,

sag is defined by h2 (two sides supported), and h4 (four

sides supported) (Unit = mm) (see Figure 1).

3.2.8 Density — Less than 2.8 g/cm

3.3 When the glass substrates are shipped, they shall be

loaded vertically.

3.4 When the glass substrates are shipped, a standard

sized pallet shall be used for efficient loading on the

truck platform or the floor of the container (see

Appendices 1 and 2). The standard size used here is less

than 1,100 × 1,100 mm

or, at the outside, 1,100 ×

1,200 mm

3.5 When the glass substrates are shipped, the loading

should be as efficient as possible utilizing the available

space, in line with:

• The smallest height for truck platforms and

containers is 2,300 mm (see Appendices 1 and 2).

SEMI D25-0600

• Taking into consideration the head clearance when loading and unloading by forklift, as well as the height of

the shipping case, the maximum height of the load is approximately 2,000 mm. If more efficient loading can be

achieved, multiple boxes can be stacked.

4 Referenced Documents

4.1 SEMI Standards

SEMI D9 — Definitions for Flat Panel Display Substrates

SEMI D11 — Specification for Flat Panel Display Glass Substrate Cassettes

SEMI D24 — Specification for Glass Substrates Used to Manufacture Flat Panel Displays

4.2 JIS Documents

JIS D4002 — Internal Dimensions for Rear Body of Motor Trucks

JIS Z0604 — Wooden Flat Pallets

4.3 ISO Documents

ISO 668 — Series 1, Freight Container – Classification, Dimensions and Ratings

NOTE 1: As listed or revised, all documents cited shall be the latest publications of adopted standards.

5 Terminology

5.1 Size of exposed portion — The length of the glass substrate exposed from the packing box (full box type) when

the lid of the packing box is open.

6 Packing

6.1 Classification

6.1.1 Classification of packing is as follows:

Packing

Separating type

Semi-separating type

Contact type

Full box type (Figure 2)

Full corner support type (Figure 3, left)

Double side supporter type (Figure 3, right)

Spacer type (Figure 4, top)

Interleaf paper type (Figure 4, down)

Interleaf film type

1 Japan Standards Association, 4-2-24, Minato-ku, Tokyo 107, Japan

2 ISO Central Secretariat, C.P. 56, CH-1211 Geneve 20, Switzerland

SEMI D25-0600

6.2 Packing Box Dimensions — Figure 5 shows the key dimensions and tolerances of the packing box for the full

box type.

6.2.1 Packing Box Loading and Unloading

6.2.1.1 Vertical loading shall be used to load and

unload the glass substrates to and from the packing box

(see Figure 6).

6.2.1.2 Vertical loading requires a tall loader/unloader

because of the height of the loading direction. The

ceiling height of the room where the loading equipment

is installed has to be designed accordingly.

6.2.1.3 A suggested method for loading/unloading

substrates from the shipping case with an automatic

vertical loader/unloader is to tilt the box as shown in

Figure 7. Align the substrates on one side of the clear-

ance of the mizo and proceed with loading/unloading.

6.2.1.4 An alternative method for loading/unloading

would be to rotate the packing box 90°, as shown in

Figure 8.

6.2.1.5 Loading and unloading the substrates also can

be done manually without using an automatic

loader/unloader.

6.2.2 Packing Box Size

6.2.2.1 The shorter side of the substrate (side W, or the

800 mm side) as the vertical direction (direction z in

Figure 5) during shipping. This way, the size of the

substrate determines the inside measurements of the

packing box, H: 800 mm (direction z), W: 950 mm

(direction x).

6.2.2.2 The outside measurements of the packing box

shall be H: 980 mm × W: 1,200 mm × L: <

1100mm

(Figure 5). It is important to note that the height of 980

mm indicates that it is possible to stack up the packing

boxes, i.e. 980 mm × 2 = 1,960 mm, and still be less

than the possible maximum height (2,000 mm) of the

truck load.

6.2.2.3 The length of the packing box is determined by

the calculated product of the pitch size between the

substrates times the number of substrates stored in the

box. the length (L in Figure 5) of the packing box

cannot exceed 1,100 mm

6.2.3 Packing Box Lid

6.2.3.1 The packing box must prevent the substrates

from getting contaminated as well as to give pressure to

the substrates for securing them from both top and

bottom. The lid must securely seal and be able to latch

closed to the packing box by a lock. The latching

mechanism must allow easy automatic lock and unlock

as well.

6.2.3.2 The lid shall also have automatic and manual

opening/closing capability. The inside of the lid is

covered with a shock absorber that functions to secure

the glass substrates by pressing them from the top and

bottom.

6.2.4 Mizo Pitch and Capacity of Packing Boxes

6.2.4.1 The sag, h4 = 20 mm will be for the substrates

of the size 800 × 950 × 0.7 mm as shown in Appendix

3, when a sudden turn, acceleration, or braking during

shipping forces a 1G acceleration against the substrates.

From this point of view, the pitch required here is a

little bit larger than 20 mm. However, since all the

substrates in the box are affected by the acceleration at

the same time and in the same direction, the distance

between the substrates will remain constant which

means the substrates should not touch each other.

6.2.4.2 The mizo pitch, must be standardized by each

shipping case supplier, but must range from a minimum

of 9 mm to a maximum of 22 mm ± 0.2 mm. Table 1

shows possible number of substrates per shipping case

at a given pitch.

Table 1 Pitch and Number of Substrates

Pitch (mm) Number of Substrates (pc)

22 40

18 50

15 60

11 80

9 100

6.2.4.3 The first mizo clearance (see Figure 9) is to be

more than 40.0 mm at the center of the groove. The

distance from the reference plane to the first mizo is the

sum of the first mizo clearance and the thickness of the

side of the box which is the reference plane, and its

allowance is ± 1.0 mm. The allowance of cumulative

pitch distance is less than ± 2.0 mm, and that of each

pitch is less than ± 1.0 mm.

6.2.4.4 Mizo clearance shall be designed to store the

glass substrate of a thickness ranging from 0.7 mm to

1.1 mm.

6.2.5 Size of Exposed Portion

6.2.5.1 In this document, the size of f1 in Figure 10 is

called “the size of the exposed portion” which is set as

f1 = 100 mm. Size h in Figure 10 is the shorter side of

the substrate at 800 mm. The size of f2 is 700 mm

which means one eighth of the whole substrate is

exposed.