Spesifikasi Ujian

tujuan

Pastikan produk syarikat memenuhi keperluan pelanggan, menyediakan asas untuk pemeriksaan produk, dan memastikan kualiti produk.

Skop permohonan

Piawaian ini terpakai untuk semua produk modul TFT yang dihasilkan oleh XX.

Peralatan Ujian

Mesin pengukur elektrik, lekapan ujian, kaca pembesar, lampu pendarfluor, caliper vernier

Rancangan persampelan dan periksa keadaan persekitaran

Unit pembuatan (atau proses QC) melakukan pemeriksaan penuh untuk pemeriksaan penampilan dan prestasi elektrik, dan untuk pengukuran ukuran atau pemeriksaan khas, bahagian pertama setiap model diambil sampel dan diuji 5pcs.

Unit kualiti mengukur 5 keping untuk sampel pertama setiap model, dan menggunakan rancangan pensampelan pemeriksaan GB / -2012 satu kali untuk pemeriksaan penampilan, dan tahap pemeriksaan umum adalah II.

Tahap tidak berkelayakan Tahap yang dibenarkan (AQL) Penilaian standard kualiti yang berkelayakan
Kekurangan utama   Sekiranya saiznya rosak, 0 terima 1 pulangan
Tunduk  
jumlah

Pemeriksa perlu memakai cincin elektrostatik dan lapan katil jari di kedua-dua belah tangannya. Sekiranya ia adalah LCD tanpa polarizer terpasang, semua jari harus memakai katil jari.

Pemeriksa dapat memeriksa atau membandingkan secara visual dengan jadual perbandingan filem.

Sila rujuk sampel untuk ujian elektrik menggunakan lekapan ujian dan skrin paparan.

Jarak antara mata pemeriksa dan produk adalah 30 ~ 40 cm. Sudut tontonan pemeriksaan adalah ± 15 darjah di permukaan depan panel paparan menegak dan ± 45 darjah di permukaan depan panel paparan mendatar (lihat gambar di bawah)

tft img1

Pencahayaan persekitaran: 800 ~ 1200LUX untuk pemeriksaan visual

Suhu persekitaran: 25 ± 5 ℃

Kelembapan: 25 ~ 75% RH

Periksa barang

(1) Definisi kecacatan titik yang disebabkan oleh panel dalaman.

a) Titik terang: titik terang dan bersaiz tetap muncul di LCD di bawah corak hitam.

b) Titik gelap: Pada gambar merah, hijau, dan biru yang murni, titik gelap dengan ukuran yang sama muncul di LCD.

c) 2 mata bersebelahan = 1 pasangan = 2 mata.

tft img2

Tunjukkan cek

barang penerangan Kuantiti yang boleh diterima MAJ MIN
Sorotan rawak N≤3  
Dua titik bersebelahan N≤0
Dua titik bersebelahan N≤0
jarak Jarak minimum antara dua titik terang 5mm
tempat gelap rawak N≤4  
Dua titik bersebelahan N≤0
Dua titik bersebelahan N≤0
Jumlah bintik gelap dan bintik terang N6  
jarak Jarak minimum antara dua bintik terang (bintik gelap) 5mm  
Sorotan kecil D≤can be ignored,<D≤, N≤4,spacing≧5mmD(Point diameter) √ 
Show fault V/H line/line crossover line etc. Not allowed  
Chromatic aberration, uneven; ripple; hot spot Pass 5% filter under 50% dark light Invisible, can be judged by limit sample if necessary    

*Note: Defects on the black matrix (outside the active area) are not considered defects

Visual inspection

barang penerangan Kuantiti yang boleh diterima MAJ MIN
Point defect (display and appearance) Black spots, white spots, bright spotstft img4 D≤ignorable, <D≤, N≤4, spacing ≥5mm (Figure 2)  
Bad linearity (display and appearance) Black line, white line, bright line tft img5 W≤ignorable, <W≤,L≤, N≤4,  
Polarizer defect Dents, bubbles D≤ignorable, <D≤, N≤4,  
Scratch W≤ignorable,<W≤,L≤, N≤4  
Panel crack  tft img6 Not allowed
Damaged TFT non-lead side  tft img7 The distance between the minimum break point area, d1≧, cannot be ignored; d1<, N≦0d 1: the minimum distance between the break point area and the dot area
Damaged TFT pin side  tft img8 The alignment mark is damaged, the damaged angle>90  
W≦,L is ignored, but the pin cannot be damaged
W≦, (D depth)≦1/2 (1 layer glass thickness)
Damaged TFT lead side corner  tft img9 The swastika cannot be damaged. W≦,L≦5mm  
TFT / CF edge burr  tft img10 d2≦d 2: The distance between the burr and the edge of the TFT  
other Poor sealing glue Height: no more than length: no more than 80mm, the sealing glue must completely cover the crystal filling mouth and the penetration depth is greater than  
LCD dimensions The size refers to the design specification, the tolerance is ± mm, if it exceeds the tolerance range, it is unqualified  
The liquid crystal is not completely poured into the box Not allowed  
Gas enters the box during crystal filling Not allowed  
Smudge Stain that cannot be wiped off is not allowed to have liquid crystal on the surface or in the glass gap  
Module appearance Newton ring

tft img11

There are Newton rings and interference lines on the touch screen, rejected  
 tft img12 The pattern font is clear, the font line becomes thicker or thinner than the normal line width ≤1/3 (and ≤+/), no hyphenation. accept  
Drums on the touch screen Acceptable without affecting writing  
There are fish-eye bubbles on the surface of the touch screen FILM According to the inspection standard of the touch screen  
Poor assembly Module assembly does not match the assembly instructions Reject  
Poor assembly The assembly does not meet the process requirements (fixed double-sided tape or shading tape is not attached, etc.) Reject  
The connection between the components is not strong (the glass is separated from the backlight, etc.) Reject  
Defects when attaching transfer paper Insufficient adhesion to tear off the protective film Reject  
Attach position Does not meet the specifications, rejected  
Attaching angle Attached to the edge of the LCD edge angle is greater than ±15 degrees, rejected  
Poor coding   Does not meet the document requirements  
Other items PCBA, HSC, FPC, backlight, etc. Refer to "LCM Finished Product Inspection Specification" ~ conduct inspection    

Remarks:

1. Ignore any defects on the protective film of the polarizer, such as scratches, bubbles and particles on the protective film.

2. The angle of all damage must be greater than 90 degrees as shown on the right.

3. If the customer has specified requirements according to customer requirements.

tft img3