propósito
Asegúrese de que os produtos da compañía cumpren os requisitos do cliente, proporcionen unha base para a inspección do produto e aseguren a calidade do produto.
Ámbito de aplicación
Esta norma aplícase a todos os produtos do módulo TFT producidos por XX.
Equipos de proba
Máquina de medición eléctrica, aparello de proba, lupa, lámpada fluorescente, pinza vernier
Plan de mostraxe e comprobación das condicións ambientais
A unidade de fabricación (ou proceso de control de calidade) realiza unha inspección completa para a inspección do aspecto e a proba de rendemento eléctrico e, para a medición do tamaño ou a inspección especial, a primeira peza de cada modelo é mostrada e probada 5 unidades.
A unidade de calidade mide 5 unidades para a primeira mostra de cada modelo e adopta o plan de mostraxe dunha soa vez de inspección normal GB / —2012 para a inspección de aspecto, e o nivel de inspección xeral é II.
| Nivel sen cualificación | Nivel permitido （AQL） | Avaliación de estándares de calidade cualificados |
| Principal deficiencia | Se o tamaño é defectuoso, 0 reciben 1 devolución | |
| Sumiso | ||
| total |
O examinador debe levar un anel electrostático e oito cunas de dedo nas dúas mans. Se se trata dun LCD sen un polarizador conectado, todos os dedos deben levar cunas de dedo.
O examinador pode comprobar ou comparar visualmente coa táboa de comparación de películas.
Consulte a mostra para a proba eléctrica usando o dispositivo de proba e a pantalla de visualización.
A distancia entre os ollos do inspector e o produto é de 30 ~ 40 cm. O ángulo de visión da inspección é de ± 15 graos na superficie frontal do panel de visualización vertical e de ± 45 graos na superficie frontal do panel de visualización horizontal (ver a figura seguinte)
Iluminación ambiental: 800 ～ 1200LUX para inspección visual
Temperatura ambiente: 25 ± 5 ℃
Humidade: 25 ~ 75% HR
Comprobe o elemento
(1) Definición de defectos puntuais causados por paneis internos.
a) Manchas brillantes: aparecen puntos brillantes de tamaño constante na pantalla LCD baixo o patrón negro.
b) Puntos escuros: nas imaxes de vermello, verde e azul puro aparecen puntos escuros do mesmo tamaño na pantalla LCD.
c) 2 puntos adxacentes = 1 par = 2 puntos.
Mostrar cheque
| elemento | descrición | Cantidade aceptable | MAJ | MIN | |
| Destacados | aleatorio | N≤3 | √ | ||
| Dous puntos adxacentes | N≤0 | ||||
| Dous puntos adxacentes | N≤0 | ||||
| distancia | Distancia mínima entre dous puntos brillantes | 5 mm | |||
| mancha escura | aleatorio | N≤4 | √ | ||
| Dous puntos adxacentes | N≤0 | ||||
| Dous puntos adxacentes | N≤0 | ||||
| Número total de manchas escuras e puntos brillantes | N≤6 | √ | |||
| distancia | Distancia mínima entre dúas manchas brillantes (manchas escuras) | 5 mm | √ | ||
| Pequenos momentos destacados | 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
| elemento | descrición | Cantidade aceptable | MAJ | MIN | |
| Point defect (display and appearance) | Black spots, white spots, bright spots |
D≤ignorable, <D≤, N≤4, spacing ≥5mm (Figure 2) | √ | ||
| Bad linearity (display and appearance) | Black line, white line, bright line  |
W≤ignorable, <W≤,L≤, N≤4, | √ | ||
| Polarizer defect | Dents, bubbles | D≤ignorable, <D≤, N≤4, | √ | ||
| Scratch | W≤ignorable,<W≤,L≤, N≤4 | √ | |||
| Panel crack |  |
Not allowed | √ | ||
| Damaged TFT non-lead side |  |
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 |  |
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 |  |
The swastika cannot be damaged. W≦,L≦5mm | √ | ||
| TFT / CF edge burr |  |
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
|
There are Newton rings and interference lines on the touch screen, rejected | √ | ||
 |
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.
