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Liquid crystal light shutter, optical printing head and method for producing lquid crystal light shutter

A liquid crystal and door panel technology, applied in the field of optical print heads, can solve the problems of increased manufacturing processes, waste of precious metal film 13, and increased manufacturing costs

Inactive Publication Date: 2003-08-20
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] There is following problem in the formation method of conventional light-shielding film and electrode pattern: because in order to form metal film 13 on the whole surface of glass base substrate 10, the area of ​​metal film 13 other than the necessary part to be removed is large, therefore causes gold, The waste of precious metal films 13 such as platinum; In addition, in the formation method of described traditional light-shielding film and electrode pattern, photomask needs to be carried out three times and other factors, cause manufacturing process to increase, will inevitably improve manufacturing cost

Method used

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  • Liquid crystal light shutter, optical printing head and method for producing lquid crystal light shutter
  • Liquid crystal light shutter, optical printing head and method for producing lquid crystal light shutter
  • Liquid crystal light shutter, optical printing head and method for producing lquid crystal light shutter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0088] figure 1 It is a cross-sectional view showing the structure of a COG (Chip On Glass: Chip On Glass) type liquid crystal light gate panel in which a driver IC is mounted in Embodiment 1 of the present invention.

[0089] exist figure 1 Middle 1a is the upper side glass substrate, on which a common electrode 3a made of ITO (Indium Tin Oxide: Indium Tin Oxide) and a gold film light-shielding film 6a made of gold film are formed. 1b is a lower glass substrate on which a pixel electrode 3b made of ITO is formed. 2a is the upper side alignment film, 2b is the lower side alignment film, the liquid crystal 5 is sealed in the liquid crystal cell formed by bonding the upper side glass substrate 1a and the lower side glass substrate 1b with the sealing material 4.

[0090] An image information signal (input signal) is input to the pixel electrode 3b, and the liquid crystal 5 is driven according to the image information signal.

[0091] Liquid crystal drive IC8 is installed on...

Embodiment 2

[0112] Use below Figure 4 Example 2 will be described.

[0113] Figure 4 A graph showing the relationship between the film thickness of the gold film light-shielding film 6a obtained through experiments and the light transmittance, R represents red light (center wavelength 650nm), G represents green light (center wavelength 550nm), and B represents blue light. The color lights (center wavelength 470nm) represent the proportion of light of each wavelength passing through the gold film light-shielding film 6a (except for the opening). Depend on Figure 4 It can be seen that if the thickness of the gold film is more than 0.28 μm, the transmittance in the entire wavelength region is less than 0.2%, and the light leakage from the gold film light-shielding film 6a can be suppressed. The method for increasing the thickness of the gold film shading film 6a includes in image 3 Repeat the method of coating (more than 2 times) organic gold glue in the process b. The other steps a...

Embodiment 3

[0117] Use below Figure 5 and Image 6 Example 3 will be described.

[0118] Figure 5 (a) is a perspective view showing an exploded structure of the print head of Embodiment 3 that adopts the liquid crystal light gate plate in Embodiments 1 and 2; Figure 5 (b) is to represent the top view of the top (see A direction among the figures) of the liquid crystal light gate plate among the embodiment 1,2, and Image 6 is a detailed cross-sectional view showing the structure of the print head.

[0119] The print head is configured such that the light source part 21 having the light source substrate 20 loaded with light sources, that is, a plurality of LEDs 19, is in contact with or close to the upper glass on which the gold film light-shielding film 6a on the liquid crystal light gate plate 18 shown in Embodiment 2 is formed. Substrate 1a side ( Figure 5 , Image 6 in the direction of arrow A).

[0120] Image 6 Among them, the light source unit 21 is composed of a light g...

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Abstract

In the forming method of blocking mask and electrode pattern of the prior art, precious metals such as gold and platinum are consumed too much to form metal film on the whole glass substrate, and the manufacturing cost of masks which need to have three manufacturing steps. A blocking mask (6a) and an electrode coating (7c) are formed using a gold film. The blocking mask (6a) and the electrode coating (7c) are formed together by printing an organic gold paste only in a necessary part and baking the printed organic gold paste.

Description

technical field [0001] The present invention relates to a liquid crystal shutter panel (liquid crystal shutter panel) suitable for a display, a print head, etc., a manufacturing method thereof, and an optical print head using the liquid crystal shutter panel. Background technique [0002] Figure 7 It is a cross-sectional view showing the general structure of a conventional liquid crystal light gate panel on which a driver IC is mounted. The structure of this liquid crystal control panel is as follows: On the inner surfaces of the upper side glass substrate 1a and the lower side glass substrate 1b which are arranged oppositely, ITO (Indium Tin Oxide: Indium Tin Oxide) covered by the upper side alignment film 2a is respectively formed. The common electrode 3a formed, and the pixel electrode 3b formed by the ITO covered by the lower side alignment film, the liquid crystal cell formed by bonding the upper side glass substrate 1a and the lower side glass substrate 1b with the se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13B41J2/465G02F1/1335G02F1/1343G06K15/12
CPCB41J2/465G02F1/133512G06K15/1252
Inventor 古木一朗山田敬喜伊藤广
Owner MITSUBISHI ELECTRIC CORP
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