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Normalization method of ink drops to ensure uniformity of amount of ink ejected from nozzles of inkjet head

A nozzle, uniform technology, used in measuring devices, respiratory protection containers, goggles, etc., to solve problems such as difficulty in ink droplets

Active Publication Date: 2007-08-22
SAMSUNG DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this is difficult when the shape of the ink drop is irregular

Method used

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  • Normalization method of ink drops to ensure uniformity of amount of ink ejected from nozzles of inkjet head
  • Normalization method of ink drops to ensure uniformity of amount of ink ejected from nozzles of inkjet head
  • Normalization method of ink drops to ensure uniformity of amount of ink ejected from nozzles of inkjet head

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Embodiment Construction

[0018] The present invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. In the drawings, the same reference numerals denote the same elements.

[0019] 3 is a conceptual diagram illustrating a method of uniformizing ink droplets according to one embodiment of the present invention, showing a plurality of nozzles included in the inkjet head 150 and pixels 122 into which ink droplets ejected from the nozzles enter.

[0020] Referring to FIG. 3, the inkjet head 150 includes nozzles for ejecting ink droplets. The inkjet head 150 of the current embodiment is shown to include 20 nozzles. In Figure 3, N 1 , N 2 , N 3 , N 4 ,...,N 20 Indicates the nozzle number. On the color filter 130, the pixels 122 are formed in a plurality of rows, in this case 9 rows, and 20 pixels 122 corresponding to the number of nozzles constitute one pixel row.

[0021] A predetermined number of ink droplets...

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Abstract

A normalization method of ink drops to ensure uniformity of an amount of ink drops ejected from nozzles of an inkjet head. The normalization method including ejecting a predetermined number of ink drops from the nozzles into pixels while changing a voltage applied to the nozzles, measuring the mean thicknesses of ink layers formed in the pixels, and setting a target thickness of the ink layers and applying a voltage corresponding to the target thickness to each of the nozzles.

Description

technical field [0001] The present invention relates to a method of uniformizing ink droplets for ensuring a consistent amount of ink ejected from nozzles of an inkjet head. Background technique [0002] Traditionally, cathode ray tube (CRT) monitors have been used to display information from televisions and computers. Recently, in order to provide larger screen sizes, devices such as liquid crystal displays (LCDs), plasma display panels (PDPs), organic electroluminescence (EL) displays, light emitting diode (LED) displays, and field emission displays (FED) Flat panel display devices are adopted. LCDs are a common choice for computer monitors and laptops due to their low power consumption. [0003] The LCD includes color filters for forming images of desired colors from white light modulated by a liquid crystal layer. The structure of the color filter is that a plurality of red (R), green (G) and blue (B) pixels are arranged in a pattern on a transparent substrate. Color...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/01G01B11/06G02B5/20
CPCB41J29/393A61F9/02G02C5/008A62B18/082G02C2200/02G02C2200/16
Inventor 金佑植金晟镇金圣雄权启示金相一
Owner SAMSUNG DISPLAY CO LTD