Unlock instant, AI-driven research and patent intelligence for your innovation.

Spray module having shielding means and collecting means

A technology of shielding device and shielding components, which is applied in the field of spray cabins, and can solve problems such as production decline and product defects

Inactive Publication Date: 2003-12-24
THOMSON CONSUMER ELECTRONICS INC
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These disadvantages cause imperfections in the product and result in reduced yields due to the extra time required to clean the spray chamber and guns

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 more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Spray module having shielding means and collecting means
  • Spray module having shielding means and collecting means
  • Spray module having shielding means and collecting means

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] Detailed description of the preferred embodiment

[0016] figure 1 A color CRT 10 is shown having a glass housing 11 comprising a rectangular panel 12 and a tubular neck 14 joined by a rectangular cone 15 . The cone 15 has an inner conductive coating (not shown) that contacts the anode knob 16 and extends to the neck 14 . Panel 12 includes a viewing panel or base plate 18 and a peripheral flange or side wall 20 sealed to cone 15 by frit 21 . The inner surface of panel 18 carries a three-color fluorescent screen 22 which emits light. figure 2 The phosphor screen 22 shown in is a linear phosphor screen comprising many phosphor screen units composed of red, green and blue phosphor strips R, G and B, the phosphor strips R, G and B are represented by Color groups or three-striped picture elements or triplets are arranged in periodic order. These strips extend in a direction generally perpendicular to the plane in which the electron beams are generated...

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

No PUM Login to View More

Abstract

A spray module (40) for manufacturing a cathode-ray tube (CRT) (10) comprises an enclosure (42) having sidewalls (44), a base (46) attached to the sidewalls (44), for closing one end thereof, and a panel support (48) having an opening (50) therethrough. The panel support (48) is attached to an opposite end of the sidewalls (44). The spray module (40) has at least one electrostatic spray gun (36) therein for spraying charged screen structure material through the opening (50) in the panel support (48) and onto an interior surface of a faceplate panel (12) of the CRT (10). The spray module (40) includes a primary shield assembly (55) disposed within the enclosure (42) and extending through the opening (50) in the panel support (48). A secondary shield assembly (56) also is disposed within the enclosure (42). The primary and secondary shield assemblies (55 and 56), respectively, direct the charged screen structure material toward the interior surface of the panel (12), thereby increasing the transfer efficiency of the spray gun (36). A collecting tray (54) also is utilized to catch the spent spray which falls to the bottom of the spray module (40). The tray (54) is inclined toward a drain (100) that directs the spent material out of the spray module (40).

Description

[0001] The present invention relates to a spray chamber used in the manufacture of phosphor screens for cathode ray tubes, and more particularly to a spray chamber used in the electrophotographic screen (EPS) process. Background of the invention [0002] US Patent No. 5,554,468 issued to P.Datta et al. on September 10, 1996 discloses a method of electrostatically spraying organic photoconductive (OPC) to an organic conductive (OC) layer deposited in advance on the inner surface of a CRT panel. content of the solution. The electrostatic spray gun produces an aerosol of OPC solution droplets, negatively charged and uniform in size, which is jet-deposited onto the OC layer. Electrostatic spraying has also been used to "fix" the phosphor material onto the OPC layer by spraying negatively charged droplets of a suitable solvent that softens the OPC layer, thereby allowing the phosphor particles to become at least partially encapsulated therein. In addition, af...

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
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B05B5/08B05B5/12B05B15/04B05B15/12H01J9/22H01J9/227
CPCB05B15/12B05B5/08B05B15/0443B05B15/0406B05B5/12B05B14/00B05B12/36B05B16/00H01J9/22
Inventor E·S·波利尼亚克P·M·里特B·T·科林斯小R·拉佩鲁塔H·R·斯托克
Owner THOMSON CONSUMER ELECTRONICS INC