JPS59147443A - Semiconductor substrate - Google Patents

Semiconductor substrate

Info

Publication number
JPS59147443A
JPS59147443A JP2068083A JP2068083A JPS59147443A JP S59147443 A JPS59147443 A JP S59147443A JP 2068083 A JP2068083 A JP 2068083A JP 2068083 A JP2068083 A JP 2068083A JP S59147443 A JPS59147443 A JP S59147443A
Authority
JP
Japan
Prior art keywords
chips
monitor
chip
elements
pads
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2068083A
Other languages
Japanese (ja)
Inventor
Shigeru Watari
渡里 滋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP2068083A priority Critical patent/JPS59147443A/en
Publication of JPS59147443A publication Critical patent/JPS59147443A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L22/00Testing or measuring during manufacture or treatment; Reliability measurements, i.e. testing of parts without further processing to modify the parts as such; Structural arrangements therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Testing Or Measuring Of Semiconductors Or The Like (AREA)

Abstract

PURPOSE:To inspect a wafer efficiently by a method wherein, when a monitor chips are constituted to measure a device of LSI chips and a process parameter, the pads of monitor chips are aligned similar to the pads of LSI specifying one type of probe card and providing a circuit to discriminate the chips. CONSTITUTION:Multiple LSI elements 7 as functional chips and multiple pads 8 for the elements 7 are provided on a wafer while a monitor chips 4 to measure them are aligned along these elements 7 and pads 8. In such a constitution, the elements 7 and the chips 4 are provided with circuits respectively to discriminate the elements 7 and the chips 4 i.e. a protecting diode 9 is connected between an input terminal VIN of the LSI elements 7 and a ground terminal GND while another three series connected protecting diode 10 is provided between an input terminal VG of the monitor chips 4 and the ground terminal GND. Through these procedures, any voltage decline may be provided with three times differential to discriminate the elements and chips easily.

Description

【発明の詳細な説明】 産業上の利用分野 不発明は半導体基板とくにLSIチップのデバイスおよ
びプロセスパラメータを測定するためのモニターチップ
の構成に関するものである。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to the structure of a monitor chip for measuring device and process parameters of semiconductor substrates, particularly LSI chips.

従来例の構成とその問題点 LS IIシリコン基板(ウェーハ)上に製造する場合
、同一ウェーハ内にトランジスタ特性、拡散層・薄膜の
シート抵抗、キャパシタンス等全測定する目的で、モニ
ターチップ全数飼配満する。
Conventional configuration and problems When manufacturing on a LS II silicon substrate (wafer), all monitor chips must be distributed on the same wafer in order to measure transistor characteristics, sheet resistance of the diffusion layer/thin film, capacitance, etc. do.

このモニターチップを測定する事で、プロセス及びデバ
イスパラメータのウェーハ内、ウェーハ間。
This monitor chip measures process and device parameters within and between wafers.

及びロット間のバラツキがわかる故に、LSIの歩留り
に直接関係する重要なプロセス管理手段になっている。
Since it is possible to understand the variation between lots, it has become an important process control means that is directly related to the yield of LSI.

以下に従来のモニターチップについて図面とともに説明
する。第1図(a)において、1はウェーハ、2〜6は
ウェーハ上に配置されたモニターチップ、7idLSI
の機能チップを示す。
A conventional monitor chip will be explained below with reference to the drawings. In FIG. 1(a), 1 is a wafer, 2 to 6 are monitor chips arranged on the wafer, and 7idLSI
shows the functional chip.

この例では、6個のモニターチップがつ゛工°−ハ上゛
に配置されている。第1図(b)は、モニターチップと
機能チップのバンドの配列状態を示したものであり、4
にウェーハ1の中心部に位置するモニタ−チップ全7は
その周辺の機能チップを示す。
In this example, six monitor chips are placed on the work surface. Figure 1(b) shows the arrangement of the bands of the monitor chip and the functional chip.
The monitor chips 7 located at the center of the wafer 1 indicate the peripheral functional chips.

パッド8の配列を見ると、モニターチップ4のバンド配
列は機能チップ7のそれと比較して、l1llIl数・
間隔が異なり、捷だチップ外周部だけでなく内部にも配
置されている。
Looking at the arrangement of the pads 8, the band arrangement of the monitor chip 4 is compared with that of the functional chip 7.
The spacing is different, and they are arranged not only on the outer periphery of the chip but also inside it.

その結果、従来例で汀ウェーハ上の機能チップとモニタ
ーテップ全測定する場合、パッドの配列が異なるので2
種類のプローブカードを必要とした。従って、グローブ
カードを取知婆えてグローブとバンドの位置会せ全行な
い、同じウェーハ金再度測定する必要がある。モニター
ナツプの測定には、プローブカードを特定の位置に移動
させる必要があり、時間のかがる手動操作で行なうが、
ウェーハ」二のl(青電チッフ゛を自動的にアクセスで
きる移Q(14機能全備える必要がある。この様に、従
来例でσプσ−プヵードが2種類必要であり、1枚のウ
ェーハ全2回測定するという能率の悪さを欠点として何
する。
As a result, when measuring all the functional chips and monitor chips on a wafer in the conventional example, the arrangement of the pads is different, so two
Required different probe cards. Therefore, it is necessary to carefully align the glove and band using a glove card and then measure the same wafer again. Measuring the monitor nap requires moving the probe card to a specific position, which is a time-consuming manual operation.
Wafer 2 (transfer Q) that can automatically access the blue electric chip What can be done about the inefficiency of measuring twice as a drawback?

発明の目的 本発明は、LSIのウェーハ測定に際し、グローブカー
ドの種類と測定回数を半減し、ウェーハ検査のコストを
削減することのできる半導体基板全提供することを目的
とする。
OBJECTS OF THE INVENTION An object of the present invention is to provide a semiconductor substrate that can reduce the number of glove cards and the number of measurements by half when measuring LSI wafers, and reduce the cost of wafer inspection.

発明の構成 本発明は、モニターチップのパッド配列を機能チップ(
LSI)のそれと同様にして、グローブカード全1種類
にし、チップの区別を可能にする回路を設ける事で、測
定プログラムを自動的に使いわけて、効率的なウェーハ
検査を行なうものである。
Structure of the Invention The present invention provides a method for changing the pad arrangement of a monitor chip to a functional chip (
Similar to that for LSI, there is only one type of glove card and a circuit is installed to distinguish between chips, which automatically uses different measurement programs to perform efficient wafer inspection.

実施例の説明 第2図は本発明の一実倫例における半導体基板で、モニ
ターチップと機能チップのパッドの配列状態を示す。説
明を容易にするため、従来例と共通の構成要素の番号は
第1図(b)と同じにしである。
DESCRIPTION OF THE EMBODIMENTS FIG. 2 shows a semiconductor substrate in one practical example of the present invention, showing the arrangement of pads on a monitor chip and a functional chip. For ease of explanation, the numbers of components common to the conventional example are the same as in FIG. 1(b).

図乃・られ力)る様に、モニターチップ4のパッド配列
げ、機能チップ7のそれと同じであり、・従っ℃機能チ
ップ用のグローブカードでモニターチップの測定が可能
である。この場合、モニターチップのパッド数は機能チ
ップと同数である必gはなく、少くても構わない。
As shown in Figure 4, the pad arrangement of the monitor chip 4 is the same as that of the functional chip 7, and thus it is possible to measure the monitor chip with a glove card for the °C functional chip. In this case, the number of pads on the monitor chip does not necessarily have to be the same as the number of pads on the functional chip, and may be smaller.

第3図(a)+ (b)−Uそれぞれ機能チップ及びモ
ニターチップの入力端子の部分を示したものである。
FIGS. 3A and 3B show the input terminals of the functional chip and the monitor chip, respectively.

第3図(a) f 1−j、M OS t、 SI ノ
入力端子(WIN)とグラノド端子(GND)の間に通
常の保護ダイオード9が接続され、入力負電圧【(対す
る電圧降下が−0,7v稈度になる。一方、第3図(b
)のモニターチップの入力端子(Vc、)とグラノド端
子((、ND)の間には、保護ダイオード10が直列に
3個接続されているため、入力負電圧に対して約−2,
1vで゛軍用クラップする。従って、モニターチップと
機能チップとの区別に、入力端子の保護ダイオードに順
方向電流金離して、電圧降下分全測定すれば約3倍の違
いが発生するので容易に行なえる。
FIG. 3(a) A normal protection diode 9 is connected between the input terminal (WIN) and the ground terminal (GND), so that the voltage drop with respect to the negative input voltage [(- The culm degree becomes 0.7v. On the other hand, Fig. 3 (b
Since three protection diodes 10 are connected in series between the input terminal (Vc, ) of the monitor chip (Vc, ) and the granode terminal ((,ND) of the monitor chip, the voltage of about -2,
``Military crap'' at 1v. Therefore, to distinguish between the monitor chip and the functional chip, it is easy to separate the forward current from the protection diode of the input terminal and measure the entire voltage drop, since a difference of approximately three times occurs.

NチャネルMO3LS Iでに、入力端子にイ呆護ダイ
オード9が接続されているので、全ての入力端子、出力
端子及び電源端子に負甫流を印加すれば一〇・7■の電
圧降下が発生する。一方、モニターチップは、MOSト
ランジスタ、拡散・ポリシリコン抵抗、キャパシタンス
、コンタクトチェイノ等からなるので、高い入力インピ
ーダンスヲ有−するゲート電極やキャパシタンス電極に
第3図(b)に示すような、複数個の保護ダイオードを
接続する。
Since a protection diode 9 is connected to the input terminal of the N-channel MO3LS I, if a negative current is applied to all input terminals, output terminals, and power supply terminals, a voltage drop of 10.7μ will occur. do. On the other hand, since the monitor chip consists of MOS transistors, diffused/polysilicon resistors, capacitances, contact chains, etc., multiple gate electrodes and capacitance electrodes with high input impedance are used as shown in Figure 3(b). Connect protection diodes.

そして、ゲート電極やキャパシタンス電極の端子を1ピ
ンのパッドにつなぐか、1ピンがGND端子になる場@
−ニ、次の2ピンのパッドに接続する。
Then, connect the terminal of the gate electrode or capacitance electrode to the 1st pin pad, or if the 1st pin becomes the GND terminal @
-D, connect to the next 2 pin pads.

そうす力、ば、グローブとパッドの接触の有無全テスト
するため、1ピンもしくは2ピンの保護ダイオードの順
方向に電流を流した場合、機能チップとモニターチップ
との場合では、電圧降下が異なり、それ全検出して測定
プログラム全便いわける。
In order to fully test the force and presence of contact between the glove and the pad, when a current is passed in the forward direction of the protection diode of pin 1 or pin 2, the voltage drop will be different between the functional chip and the monitor chip. , it all detects and measures programs all the time.

第4図は、機能チップとモニターチップの測定プログラ
ムの流れ図である。捷ず、11においてグローブカード
とパッドとの接触を調べるため、1ピンもしくは2ピン
から保護ダイオードの順方向に亀Itを流し、そのとき
の端子電圧全測定するb12において、測定した端子電
圧(以下Voと記す)がOV’>To >−I Vであ
れば、そのチップはMO8LSIであるので、MO8L
SI測定プログラムのルーチン(13のDGテスト、1
4のファンクンヨノテスト、16のACテスト)に分岐
する。Vo=○Vもしくは一1v≧■0の場合は、16
の比較判断の処理へ飛ぶ。そこでは、−1”tM>Vo
 >−3Vであれば、そのチップ全モニターチップと判
断し、1γのモニター測定プログラム金実行し、18で
測定データを出力する。
FIG. 4 is a flowchart of the measurement program for the functional chip and monitor chip. In step 11, in order to check the contact between the glove card and the pad, the voltage is passed from pin 1 or pin 2 in the forward direction of the protection diode, and the entire terminal voltage at that time is measured.In b12, the measured terminal voltage (hereinafter (denoted as Vo) is OV'>To>-I V, the chip is MO8LSI, so MO8L
SI measurement program routine (13 DG tests, 1
It branches into 4 Funkun Yono Test and 16 AC Test). If Vo=○V or -1v≧■0, 16
Skip to the comparative judgment process. There, −1”tM>Vo
If >-3V, it is determined that all of the chips are monitor chips, the 1γ monitor measurement program is executed, and the measurement data is output at step 18.

7口がQv″またけ一3V>Voであれば入力端子がG
NDとショートもしくは、プローブがパッドと接触しな
い場合であるから、19の経路でもって測定ヶ終了させ
、次のチップへプローブを移動させる。
If the 7th port is Qv'' and 3V>Vo, the input terminal is G.
Since this is a case where there is a short circuit with the ND or the probe does not contact the pad, the measurement is completed using route 19 and the probe is moved to the next chip.

一方、GND端子と1ピンもしくは2ピンのパッド間に
抵抗(例えばポリシリコン抵抗)だけ全接続しても、抵
抗値により降下電圧を任意に変えられるのでチップの区
別は可能である。従って、MO8LSIチノグとモチッ
プチップの両方を1つのプローブカードで測定できる。
On the other hand, even if only a resistor (for example, a polysilicon resistor) is fully connected between the GND terminal and the pad of pin 1 or pin 2, chips can be distinguished because the voltage drop can be arbitrarily changed depending on the resistance value. Therefore, both the MO8LSI chinog and the mochip chip can be measured with one probe card.

発明の効果 、 以上のように、本発明はモニターチップのパッド配
列?機能チップのパッド配列と同様にする事でグローブ
カードを1種類に減らせる。寸た、モニターチップの入
力端子の保護ダイオード数を増やして、順方向降下電圧
を太きくしたり、特定パッド間に抵抗を挿入してLSI
の入力端子との区別全行なわせ、それによって適用すべ
き測定プログラムiJ定すれば、LSIチップとモニタ
ーチップ全連続して測定することが可能になる。その結
果、ウェーハの測定回数は従来2回であったものが、1
1梱ですむことになり検査コストの大幅削減が可能であ
る。
Effects of the Invention As described above, does the present invention improve the pad arrangement of the monitor chip? By using the same pad arrangement as the functional chip, the number of glove cards can be reduced to one type. For example, increasing the number of protection diodes at the input terminal of the monitor chip to increase the forward voltage drop, or inserting a resistor between specific pads to improve LSI performance.
If the measurement program iJ to be applied is determined based on the distinction between the input terminals and the input terminals, it becomes possible to continuously measure the LSI chip and the monitor chip. As a result, the number of measurements on a wafer was reduced from two to one.
Since only one package is required, inspection costs can be significantly reduced.

【図面の簡単な説明】[Brief explanation of drawings]

第1図(a)、 (t))は従来のLSIチップとモニ
ターチップの配置とパッドの配列を示す図、第2図は本
発明の一実施例のMO8LSIチップとモニターチップ
配列を示す図、第3図(a)t (b)はそれぞれ入力
端子の11)1路図、第4図は測定プロゲラ゛ムの流・
れ図である。 1・・・・・・ウェーハ、2〜6・・・・・・モニター
チップ、7・・・・・・機能チップ(、−L−3−1,
) 、 8 ・==パッド、9〜1Q・・・・保嘩ダイ
オード。 代理人の氏名 弁理士 中 尾 敏 男 はが1名第2
図 (αン                (b〕第4図
FIGS. 1(a) and 1(t)) are diagrams showing the arrangement of conventional LSI chips and monitor chips and the arrangement of pads, FIG. 2 is a diagram showing the arrangement of MO8LSI chips and monitor chips according to an embodiment of the present invention, Figures 3(a) and 3(b) are 11) path diagrams of the input terminals, and Figure 4 is the flow diagram of the measurement program.
This is a diagram. 1...Wafer, 2-6...Monitor chip, 7...Functional chip (, -L-3-1,
), 8 == pad, 9~1Q... protection diode. Name of agent: Patent attorney Toshio Nakao, 1st person, 2nd person
Figure (αn (b) Figure 4

Claims (3)

【特許請求の範囲】[Claims] (1)同一面」二に機能チップと、パッド配列が前記機
能チップのパッド配列と同様で、かつ前記機能チップと
の区別を可能にする回路手段を備えたモニターチップと
全配列する事を特徴とする半導体基板。
(1) On the same surface, a functional chip and a monitor chip whose pad arrangement is similar to that of the functional chip and which is equipped with a circuit means to enable differentiation from the functional chip are arranged. Semiconductor substrate.
(2)機能チップとの区別を可能にする回路手段として
、入力端子の保護ダイオードを複数個直列に接続したモ
ニターチップを配列する半金特徴とする特許請求の範囲
第1項に記載の半導体基板。
(2) The semiconductor substrate according to claim 1, characterized in that it is a half-metal metal on which a monitor chip in which a plurality of protection diodes for input terminals are connected in series is arranged as a circuit means for distinguishing it from a functional chip. .
(3)機能チップとの区別を可能にする回路手段として
、特定のパッド間に抵抗全接続したモニターチップを配
列する事を特徴とする特許請求の範囲第1項に記載の半
導体基板。
(3) The semiconductor substrate according to claim 1, characterized in that a monitor chip having all resistors connected between specific pads is arranged as a circuit means for making it possible to distinguish it from a functional chip.
JP2068083A 1983-02-10 1983-02-10 Semiconductor substrate Pending JPS59147443A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2068083A JPS59147443A (en) 1983-02-10 1983-02-10 Semiconductor substrate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2068083A JPS59147443A (en) 1983-02-10 1983-02-10 Semiconductor substrate

Publications (1)

Publication Number Publication Date
JPS59147443A true JPS59147443A (en) 1984-08-23

Family

ID=12033889

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2068083A Pending JPS59147443A (en) 1983-02-10 1983-02-10 Semiconductor substrate

Country Status (1)

Country Link
JP (1) JPS59147443A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61176127A (en) * 1985-01-31 1986-08-07 Toshiba Corp Semiconductor mask
JPH05175430A (en) * 1991-12-24 1993-07-13 Nec Corp Semiconductor integrated circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61176127A (en) * 1985-01-31 1986-08-07 Toshiba Corp Semiconductor mask
JPH05175430A (en) * 1991-12-24 1993-07-13 Nec Corp Semiconductor integrated circuit

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