Control method for bad voltage of LCD
A liquid crystal display and control method technology, applied in the direction of electrical program control, static indicator, comprehensive factory control, etc., can solve the problems of product voltage exceeding, crosstalk, product scrapping, etc., and achieve the effect of improving product quality and reducing voltage defect rate
Inactive Publication Date: 2009-07-01
深圳市合力泰光电有限公司
View PDF0 Cites 7 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
When the IC is pressed and assembled into a module, the transmittance of the same product will be different, resulting in defective products such as light, thick, and crosstalk.
[0018] There are many factors affecting the voltage of LCD monitors, such as external factors and product reasons, etc. During the manufacturing process of LCD monitors, the same models produced on the same day are often tested together. Filling, and then determine the product voltage and control standards, and then mass-produce the batch model based on the standards that have been tested and confirmed, without taking into account the reasons of the product itself (made with different hot-pressing fixtures, different hot-pressing conditions, etc.) and after cutting Voltage difference caused by production environment (temperature and humidity), production time (product residence time after cutting, etc.)
When all products are uniformly inspected, the voltage of some products usually exceeds the control standard, and the defect rate is generally about 5%, resulting in the scrapping of the product
[0019]The existing control method cannot achieve the desired effect, and the defect rate is too high. Therefore, a new voltage defect control method is urgently needed to overcome the existing voltage control. The problem
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0059] Please refer to Figure 5 , The invention relates to a method for controlling the voltage failure of a liquid crystal display.
[0060] The technical solution for achieving the stated purpose is: a method for controlling a liquid crystal display with poor voltage, comprising the following steps:
[0061] (1) Determining several manufacturing processes for the production of liquid crystal panels;
[0062] Specifically, the production processes for producing liquid crystal panels include cleaning, gluing, exposure, development, etching, stripping, cleaning, TOP / PI, curing, rubbing, silk screen printing, powder spraying, bonding, hot pressing, cutting , filling and leveling.
[0063] (2) Find out the production process corresponding to the main factors affecting the voltage fluctuation of the liquid crystal display;
[0064] Find out the main factors affecting the voltage fluctuation of the liquid crystal display through experiments:
[0065] List the factors affecting...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a control method of defective voltage for a liquid crystal display, which comprises steps of defining certain manufacturing processes of a liquid crystal panel, finding out manufacturing processes corresponding to major factors which affect voltage of the liquid crystal display, performing diversion operation on the processed liquid crystal panel during the manufacturing processes corresponding to the major factors affecting voltage of the liquid crystal display. The invention utilizes an effective process control method, which greatly reduces defective rate of voltage of the liquid crystal display and improves product quality by controlling all factors which can affect voltage fluctuation potentially and by using the diversion operation to gauge.
Description
technical field [0001] The invention relates to a method for manufacturing an STN / CSTN liquid crystal display, in particular to a method for controlling poor voltage during the manufacturing process of the STN / CSTN liquid crystal display. Background technique [0002] Explanation of terms: [0003] Vth: the liquid crystal threshold voltage, the voltage required to drive the liquid crystal molecules to start twisting. [0004] V10: When the glass permeability is 10%, the voltage required to drive the liquid crystal molecules to twist. [0005] V90: That is, when the glass permeability is 90%, the voltage required to drive the liquid crystal molecules to twist. [0006] Von: When the liquid crystal display is working, the effective voltage of the display point. [0007] Voff: The effective voltage of the non-display point when the liquid crystal display is working. [0008] Steepness: the value of V90 / V10 or V10 / V90, which is an important parameter in the optoelectronic de...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/1333G02F1/133G05B19/418
CPCY02P90/02
Inventor 何水清
Owner 深圳市合力泰光电有限公司